Sample records for high risk property

  1. Equity Risk Premium and Insecure Property Rights

    E-Print Network [OSTI]

    Magin, Konstantin

    2009-01-01T23:59:59.000Z

    Paper # 2009 -01 Equity Risk and Insecure Property Rightsof California Berkeley Equity Risk Premium and InsecureHow much of the equity risk premium puzzle can be attributed

  2. Equity Risk Premium and Insecure Property Right

    E-Print Network [OSTI]

    Magin, Konstantin

    2013-01-01T23:59:59.000Z

    Magin, K. , 2012. The Equity Risk Premium Puzzle: A Res-Edelstein, The Coleman Fung Risk Management Research CenterMagin, K. , 2009. Equity Risk Premium and Insecure Property

  3. CORRELATION AND DEPENDENCY IN RISK MANAGEMENT: PROPERTIES AND PITFALLS

    E-Print Network [OSTI]

    McNeil, Alexander J.

    CORRELATION AND DEPENDENCY IN RISK MANAGEMENT: PROPERTIES AND PITFALLS PAUL EMBRECHTS, ALEXANDER MCNEIL, AND DANIEL STRAUMANN Abstract. Modern risk management calls for an understanding of stochastic de dependence concepts like comonotonicity and rank correlation should also be understood by the risk management

  4. Oilfield property development: Risk assessment, management and control

    SciTech Connect (OSTI)

    Robertson, M.; Robles, H.; Manweiler, D. [Environmental Science & Engineering, Inc., Fountain Valley, CA (United States)

    1996-08-01T23:59:59.000Z

    Several regulatory authorities in California have developed new regulations/guidelines for oilfield remediation and subsequent development. The sole intent of the new regulations/guidelines is to protect public health; however, these efforts are often misdirected. In fact, many of the regulations/guidelines impose remediation or construction standards that, in effect, render the development of such properties impractical. These standards include or require stringent contaminant cleanup standards, minimum development setbacks from active and abandoned wells, natural-gas venting provisions for abandoned wells, and the widespread use of soil-gas barriers. Clearly, these regulatory changes have been made without due consideration of risk. Because, in actuality, the risks posed by former oilfield properties are insignificant when compared to other non- oilfield properties. The history of oilfield development in Southern California has shown that although some physical and chemical hazards do exist, oilfield development, properly managed, can usually be accomplished with acceptable residual risk. Rigid control measures, based on inaccurate assumptions, merely inhibit the useful development of valuable property and misdirect resources that could be more effectively applied where the risks are real and significant. To protect public health and allow for efficient resource allocation, risk control measures must be both adequate and proportional to the actual health risks and hazards posed. This paper reviews the history of oil production in Southern California, explains the known health risks associated with oilfield property development, and describes a risk management approach that will address these risks at an acceptable cost.

  5. High risk of permafrost thaw

    SciTech Connect (OSTI)

    Schuur, E.A.G.; Abbott, B.; Koven, C.D,; Riley, W.J.; Subin, Z.M.; al, et

    2011-11-01T23:59:59.000Z

    In the Arctic, temperatures are rising fast, and permafrost is thawing. Carbon released to the atmosphere from permafrost soils could accelerate climate change, but the likely magnitude of this effect is still highly uncertain. A collective estimate made by a group of permafrost experts, including myself, is that carbon could be released more quickly than models currently suggest, and at levels that are cause for serious concern. While our models of carbon emission from permafrost thaw are lacking, experts intimately familiar with these landscapes and processes have accumulated knowledge about what they expect to happen, based on both quantitative data and qualitative understanding of these systems. We (the authors of this piece) attempted to quantify this expertise through a survey developed over several years, starting in 2009. Our survey asked experts what percentage of surface permafrost they thought was likely to thaw, how much carbon would be released, and how much of that would be methane, for three time periods and under four warming scenarios that are part of the new IPCC Fifth Assessment Report.

  6. Immersion Property and Credit Risk Modelling Monique Jeanblanc

    E-Print Network [OSTI]

    Jeanblanc, Monique

    Immersion Property and Credit Risk Modelling Monique Jeanblanc , Yann Le Cam , , Universit´e d time. This theorem emphasizes the major role played by initial times in credit modelling. A corollary

  7. OUT OF BOUNDS SKIERS AND AVALANCHE RISK: HIGH-RISK COHORT IDENTIFICATION AND CHARACTERIZATION

    E-Print Network [OSTI]

    and Characterization Project No.: 487 Examining Committee: Chair: Anna Usborne Master of Resource Management Candidate risk assessment; high-risk cohort; risk perception; sensation seeking scale; self-efficacy; discrete

  8. High performance in Procurement Risk Management

    E-Print Network [OSTI]

    Olsha, Maya (Olsha-Yehiav)

    2010-01-01T23:59:59.000Z

    Research on Procurement Risk Management has been conducted by Accenture and MIT in order to identify the best practices used to manage commodity price volatility and supplier risk. In today's increasingly turbulent market ...

  9. GAO High Risk List - An Update - David Trimble, Government Accountabil...

    Broader source: Energy.gov (indexed) [DOE]

    Management for the National Nuclear Security Administration and Office of Environmental Management Workshop 2015 - TrimbleGAO High Risk List.PDF More Documents & Publications...

  10. Basis risk and property derivative hedging in the UK : implications of the 2007 IPF Study of tracking error

    E-Print Network [OSTI]

    Ma, Jia, S.M. Massachusetts Institute of Technology

    2009-01-01T23:59:59.000Z

    This thesis examines how the basis risk affects property derivative hedging in the UK market, based on the tracking error (basis risk) report from the Investment Property Forum study in 2007 (the IPF Study). The thesis ...

  11. Howard County- High Performance and Green Building Property Tax Credit

    Broader source: Energy.gov [DOE]

    The state of Maryland permits local governments (Md Code: Property Tax § 9-242) to offer property tax credits for high performance buildings and energy conservation devices (Md Code: Property Tax §...

  12. Local Option- Property Tax Credit for High Performance Buildings

    Broader source: Energy.gov [DOE]

    Similar to Maryland's Local Option Property Tax Credit for Renewable Energy, Title 9 of Maryland's property tax code creates an optional property tax credit for high performance buildings. This...

  13. EM Makes Progress on GAO High-Risk List | Department of Energy

    Office of Environmental Management (EM)

    Makes Progress on GAO High-Risk List EM Makes Progress on GAO High-Risk List February 14, 2013 - 12:00pm Addthis WASHINGTON, D.C. - The U.S. Government Accountability Office (GAO)...

  14. Anne Arundel County- High Performance Dwelling Property Tax Credit

    Broader source: Energy.gov [DOE]

    The state of Maryland permits local governments (Md Code: Property Tax § 9-242) to offer property tax credits for high performance buildings if they choose to do so. In October 2010 Anne Arundel...

  15. Montgomery County- High Performance Building Property Tax Credit

    Broader source: Energy.gov [DOE]

    The state of Maryland permits local governments (Md Code: Property Tax § 9-242) to offer property tax credits for high performance buildings if they choose to do so. Montgomery County has...

  16. Approaches To Crisis Prevention In Lean Product Development By High Performance Teams And Through Risk Management

    E-Print Network [OSTI]

    Oehmen, Josef

    This thesis investigates crisis prevention in lean product development, focusing on high performance teams and risk management methods.

  17. Hemodynamic monitoring and management in patients undergoing high risk surgery: a survey among North American and European anesthesiologists

    E-Print Network [OSTI]

    Cannesson, Maxime; Pestel, Gunther; Ricks, Cameron; Hoeft, Andreas; Perel, Azriel

    2011-01-01T23:59:59.000Z

    and management in patients undergoing high risk surgery: a surveyand management in patients undergoing high risk surgery: a surveyand management in patients undergoing high-risk surgery. Materials and methods A survey

  18. Electromechanical properties of thin strip piezoelectric vibrators at high frequency

    E-Print Network [OSTI]

    Cao, Wenwu

    an equivalent circuit by application of network theory. The Mason equivalent circuit, shown in Fig. 1 for a oneElectromechanical properties of thin strip piezoelectric vibrators at high frequency Timothy Ritter the electromechanical properties of high frequency 20 MHz piezoelectric strip vibrators. A nonlinear regression

  19. High Performance Lipoprotein Profiling for Cardiovascular Risk Assessment 

    E-Print Network [OSTI]

    Larner, Craig

    2012-10-19T23:59:59.000Z

    With the severity of cardiovascular disease (CVD) and the related mortality rate to this disease, new methods are necessary for risk assessment and treatment prior to the onset of the disease. The current paradigm in CVD risk assessment has shifted...

  20. Savannah River Site Probabilistic Risk Assessment high-level review

    SciTech Connect (OSTI)

    Not Available

    1990-02-01T23:59:59.000Z

    A review of the Savannah River Site (SRS) Probabilistic Risk Assessment (PRA) has been performed by a review committee organized by the US Department of Energy (DOE) and its contractor, EG&G Idaho, Inc. The High-Level Peer Review Committee (referred to as ``the Committee`` in this report) members are identified in Section 2. The main purpose of the review has been to provide assurance that the SRS PRA is responsive to safety issues associated with the restart and continued operation of the Savannah River reactors. The Committee members are all experienced practitioners of PRA, and several of the members have been deeply involved In a concurrent, detailed review of the SRS PRA. Source material and expertise available to the Committee included the SRS PRA document itself issued August 31. 1989, and Interaction with key PRA and plant experts at both the Savannah River Site and the Los Alamos National Laboratory (LANL), who had performed an independent PRA evaluation of the SRS K-reactor. The cooperation and support received from those connected with the review were outstanding.

  1. E7 properties of mucosal human papillomavirus types 26, 53 and 66 correlate with their intermediate risk for cervical cancer development

    SciTech Connect (OSTI)

    Mansour, Mariam; Touka, Majid; Hasan, Uzma; Bellopede, Angelica; Smet, Anouk; Accardi, Rosita; Gabet, Anne-Sophie; Sylla, Bakary S. [Infections and Cancer Biology Group, International Agency for Research on Cancer, 150 cours Albert-Thomas, 69008 Lyon (France); Tommasino, Massimo [Infections and Cancer Biology Group, International Agency for Research on Cancer, 150 cours Albert-Thomas, 69008 Lyon (France)], E-mail: tommasino@iarc.fr

    2007-10-10T23:59:59.000Z

    Epidemiological studies have demonstrated that 15 different mucosal human papillomavirus (HPV) types of the genus alpha of the HPV phylogetic tree are classified as high risk for cervical cancer development. Three additional HPV types of the same genus, HPV26, 53 and 66, are classified as probable high-risk types. In this study, we have characterized the biological properties of the E7 oncoproteins from these three HPV types. All of the corresponding E7 proteins were able to associate with retinoblastoma protein (pRb) and up-regulated the expression of several positive cell cycle regulators, i.e. CDK2, cyclin A and cylin E. However, HPV26 E7 appears to be more efficient than HPV53 and 66 E7 in up-regulating the transcription of cyclin A. Unlike E7 from the high-risk type HPV16 protein, HPV26, 53 and 66 did not efficiently promote pRb degradation. In addition, E7 from these viruses was able to promote proliferation of primary human keratinocytes and circumvent G1 arrest imposed by overexpression of p16{sup INK4a}, but with less efficiency than the high-risk HPV16 E7. Together, our data show that in vitro properties of these E7 proteins correlate with the epidemiological classification of HPV26, 53 and 66 as HPV types with an intermediate risk for cervical cancer development.

  2. Functional Properties and Utilization of High pH Beef

    E-Print Network [OSTI]

    Garcia, Lyda G.

    2010-10-12T23:59:59.000Z

    FUNCTIONAL PROPERTIES AND UTILIZATION OF HIGH pH BEEF A Dissertation by LYDA GUADALUPE GARCIA Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of DOCTOR... OF PHILOSOPHY August 2009 Major Subject: Animal Science FUNCTIONAL PROPERTIES AND UTILIZATION OF HIGH pH BEEF A Dissertation by LYDA GUADALUPE GARCIA Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment...

  3. Property:SalinityHIgh | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag Jump to:ID8/Organization RAPID/Contact/ID8/Positionmaterial JumpSalinityHIgh Jump

  4. MECHANICAL PROPERTIES AND MICROSTRUCTURAL EVOLUTIONS AT HIGH STRAIN RATES OF

    E-Print Network [OSTI]

    Gubicza, Jenõ

    characteristics of high purity nickel processed by electrodeposition tested in compression up to a dynamic strainMECHANICAL PROPERTIES AND MICROSTRUCTURAL EVOLUTIONS AT HIGH STRAIN RATES OF ELECTRODEPOSITED NICKEL H. Couque1 , A. Ouarem2 , G. Dirras2 and J. Gubicza3 Summary ­ The mechanical and microstructural

  5. United States General Accounting Office GAO High-Risk Series

    E-Print Network [OSTI]

    Ladkin, Peter B.

    -risk areas. This report focuses on major, multibillion dollar information system development, and/or performance goals. Such problems are all too common in federal automation projects. Agencies have obligated over $145 billion during the past 6 years building, buying, #12;and maintaining computer

  6. Wave Function Properties in a High Energy Process

    E-Print Network [OSTI]

    Arjun Berera

    1994-11-14T23:59:59.000Z

    A model example is given of how properties of the hadronic light-cone wave function are revealed in a particular high energy process. The meson wave function is derived in scalar quark QCD. We apply it to compute the form of the cross section for lossless diffractive jet-production, an upcoming possiblity at HERA.

  7. High pressure apparatus for transport properties study in high magnetic field

    SciTech Connect (OSTI)

    Alsmadi, A. M. (Abdel M.); Nakotte, H. (Heinrich); Honda, F.; Sechovsky, V. (Vladimir); Mikulina, O. (Olga); Kamarad, J.; Lacerda, A. H. (Alex H.)

    2002-01-01T23:59:59.000Z

    We have designed a high pressure apparatus for measuring electrical-transport properties at low temperatures, high magnetic field and hydrostatic pressure up to 10 kbar. Details of the high-pressure cell and an exemplary study on UNiAI are described and discussed briefly.

  8. A systems approach to enterprise risk management in high-tech industry

    E-Print Network [OSTI]

    Sharma, Atul, 1973-

    2005-01-01T23:59:59.000Z

    The high-tech industry is showing increased interest in developing an enterprise wide approach to risk management. There are three reasons for this increased interest; first as the industry has matured, as evidenced by ...

  9. Preventing Disability Among Working Participants in Kansas’ High-risk Insurance Pool: Implications for Health Reform

    E-Print Network [OSTI]

    Hall, Jean P.; Moore, Janice M.; Welch, Greg W.

    2011-01-01T23:59:59.000Z

    Health conditions that prevent individuals from working full time can restrict their access to health insurance. For people living in the 35 states that offer high-risk pools, coverage is available but premiums are 125–200% ...

  10. asbestos-exposed high-risk individuals: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    programs, prohibits undergraduate travel Ghosh, Somnath 36 8B.6 A DETAILED ANALYSIS OF SPC "HIGH RISK" OUTLOOKS, 2003-2009 Jason M. Davis* Geosciences Websites Summary: 8B.6 A...

  11. Arsenic in your water?: Economists study perceptions of risks from drinking water high in arsenic

    E-Print Network [OSTI]

    Wythe, Kathy

    2010-01-01T23:59:59.000Z

    Arsenic in water?your tx H2O | pg. 27 Story by Kathy Wythe Economists study perceptions of risks from drinking water high in arsenic In several ?hot spots? across the United States people may be drinking water with high levels of naturally... occurring arsenic without understanding the associated risks, according to agricultural economists. ?Many households in arsenic ?hot spots? are in fact being exposed to harmful doses of arsenic,? said Dr. Douglass Shaw, professor of agricultural...

  12. Cryogenic properties of dispersion strengthened copper for high magnetic fields

    SciTech Connect (OSTI)

    Toplosky, V. J.; Han, K.; Walsh, R. P. [National High Magnetic Field Laboratory, Tallahassee, FL 32310 (United States); Swenson, C. A. [Lawrence Berkeley National Laboratory, Berkeley, CA 94720 (United States)

    2014-01-27T23:59:59.000Z

    Cold deformed copper matrix composite conductors, developed for use in the 100 tesla multi-shot pulsed magnet at the National High Magnetic Field Laboratory (NHMFL), have been characterized. The conductors are alumina strengthened copper which is fabricated by cold drawing that introduces high dislocation densities and high internal stresses. Both alumina particles and high density of dislocations provide us with high tensile strength and fatigue endurance. The conductors also have high electrical conductivities because alumina has limited solubility in Cu and dislocations have little scattering effect on conduction electrons. Such a combination of high strength and high conductivity makes it an excellent candidate over other resistive magnet materials. Thus, characterization is carried out by tensile testing and fully reversible fatigue testing. In tensile tests, the material exceeds the design criteria parameters. In the fatigue tests, both the load and displacement were measured and used to control the amplitude of the tests to simulate the various loading conditions in the pulsed magnet which is operated at 77 K in a non-destructive mode. In order to properly simulate the pulsed magnet operation, strain-controlled tests were more suitable than load controlled tests. For the dispersion strengthened coppers, the strengthening mechanism of the aluminum oxide provided better tensile and fatigue properties over convention copper.

  13. The impact of individualised cardiovascular disease (CVD) risk estimates and lifestyle advice on physical activity in individuals at high risk of CVD. A Pilot 2x2 Factorial "Understanding Risk" Trial.

    E-Print Network [OSTI]

    Price, Hermione C; Tucker, Lynne; Griffin, Simon J; Holman, Rury R

    2008-07-17T23:59:59.000Z

    in adults at high risk of CVD. Methods/Design In a 2 × 2 factorial design participants are allocated at random to a personalised 10-year CVD risk estimate or numerical CVD risk factor values (systolic blood pressure, LDL cholesterol and fasting glucose...

  14. Balancing Cost and Risk by Optimizing the High-Level Waste and Low-Activity Waste Vitrification

    SciTech Connect (OSTI)

    Hrma, Pavel R.; Vienna, John D.

    2000-02-23T23:59:59.000Z

    In the currently used melters, the waste loading for nearly all high-level waste (HLW) is limited by crystallization. Above a certain level of waste loading, precipitation, settling, and accumulation of crystalline phases can cause severe processing problems and shorten the melter lifetime. To decrease the cost without putting the vitrification process at an unreasonable risk, several options, such as developing melters that operate above the liquidus temperature of glass, can be considered. Alternatively, if the melter is stirred, either mechanically, by bubbling, or by temperature gradients in induction heating, the melt can contain a substantial fraction of a crystalline phase that would not settle because it would be removed from the melter with glass. In addition, an induction melter can be nearly completely drained. For current melters that operate at a fixed temperature of 1150C, optimized glass formulation within currently accepted constaints has been developed. This approach is based on mathematically formulated relationships between glass properties and glass composition. Finally, re-evaluating the liquidus-temperature constraint, which may be unnecessarily restrictive for some HLWs, has recently been investigated. An attempt is being made to assess the rate of settling of crystalline phases in the melter and evaluate the risk for melter operation. Based on a reliable estimate of such a risk, waste loading could be increased, and a substantial saving can accrue. For low-activity waste (LAW), the waste loading in glass is limited either by the product quality or by segregation of sulfate during melting. The formulation of constraints on LAW glass in terms of relevant properties has not been completed, and no property-composition relationships have been established so far for this type of waste glass.

  15. RF properties of high temperature superconductors: Cavity methods

    SciTech Connect (OSTI)

    Portis, A.M. (California Univ., Berkeley, CA (USA)); Cooke, D.W.; Gray, E.R. (Los Alamos National Lab., NM (USA))

    1990-01-01T23:59:59.000Z

    A description of cavities used in the study of the microwave properties of the high-temperature superconductors is followed by a lumped-circuit analysis of the coupling of transmission lines and resonators. The frequency dependence of the reflected and transmitted microwave power and the character of transient cavity response are analyzed. Techniques are discussed for the introduction of samples of the high-temperature superconductors into microwave cavities. Following a discussion of sample surface impedance and sample geometry factor, the connection between surface resistance and cavity Q is examined as well as the connection between cavity frequency shift and surface reactance. Measurement techniques that utilize reflected or transmitted power or transient response are described. 35 refs., 1 fig.

  16. GAO-11-879T, Federal Real Property, Overreliance on Leasing Contribute...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    879T, Federal Real Property, Overreliance on Leasing Contributed to High-Risk Designation GAO-11-879T, Federal Real Property, Overreliance on Leasing Contributed to High-Risk...

  17. Predictors and outcome impact of perioperative serum sodium changes in a high risk population

    E-Print Network [OSTI]

    Klinck, J.; McNeill, L.; Di Angelantonio, E.; Menon, D.

    2014-01-01T23:59:59.000Z

    1 Predictors and outcome impact of perioperative serum sodium changes in a high risk population J Klinck 1 L McNeill 1 E Di Angelantonio 2 D Menon 1 1 Division of Perioperative Care, Box 93, Addenbrooke’s Hospital, Hills...

  18. Condensation Risk in a Room with High Latent Load and Chilled Ceiling

    E-Print Network [OSTI]

    Chen, Qingyan "Yan"

    proposed a new ventilation system with radiant cooling panel and air supplied from a liquid desiccant dehumidification system, which provided very dry supply air and chilled water for radiant cooling. This study usedCondensation Risk in a Room with High Latent Load and Chilled Ceiling Panel and with Air Supplied

  19. High Temperature Mechanical Properties of Molybdenum Solid Solution Alloys

    SciTech Connect (OSTI)

    Charit, I.; Murty, K.L. [College of Engineering, North Carolina State University, Raleigh, NC 27695, (United States)

    2006-07-01T23:59:59.000Z

    Demanding material requirements for space nuclear power systems have called for the use of refractory alloys. Molybdenum alloys are such candidate materials because of their good mechanical properties at fairly high temperatures, low neutron capture cross-section, and superior resistance to the attack of liquid metals. However, conventional Mo alloys have low ductility at lower temperatures. Hence, there have been several attempts to improve their viability. One of those approaches has been to alloy Mo with various alloying additions in solid solution, most notably with rhenium (Re). In this study the high temperature deformation behavior of various Mo-X (X Re, W, Nb, Hf) alloys is reviewed. High temperature deformation data for these solid solution alloys are analyzed in the light of existing deformation theories. Alloys with both Class-M and -A type behavior are identified and thus, various mechanisms are found to operate. Sometimes data interpretation becomes difficult due to the presence of second phase particles. Results are compared with unalloyed Mo to bring out the importance of solid solution alloying. (authors)

  20. Risk management & organizational uncertainty implications for the assessment of high consequence organizations

    SciTech Connect (OSTI)

    Bennett, C.T.

    1995-02-23T23:59:59.000Z

    Post hoc analyses have demonstrated clearly that macro-system, organizational processes have played important roles in such major catastrophes as Three Mile Island, Bhopal, Exxon Valdez, Chernobyl, and Piper Alpha. How can managers of such high-consequence organizations as nuclear power plants and nuclear explosives handling facilities be sure that similar macro-system processes are not operating in their plants? To date, macro-system effects have not been integrated into risk assessments. Part of the reason for not using macro-system analyses to assess risk may be the impression that standard organizational measurement tools do not provide hard data that can be managed effectively. In this paper, I argue that organizational dimensions, like those in ISO 9000, can be quantified and integrated into standard risk assessments.

  1. Assessing Risk in Costing High-energy Accelerators: from Existing Projects to the Future Linear Collider

    E-Print Network [OSTI]

    Lebrun, Philippe

    2010-01-01T23:59:59.000Z

    High-energy accelerators are large projects funded by public money, developed over the years and constructed via major industrial contracts both in advanced technology and in more conventional domains such as civil engineering and infrastructure, for which they often constitute one-of markets. Assessing their cost, as well as the risk and uncertainty associated with this assessment is therefore an essential part of project preparation and a justified requirement by the funding agencies. Stemming from the experience with large circular colliders at CERN, LEP and LHC, as well as with the Main Injector, the Tevatron Collider Experiments and Accelerator Upgrades, and the NOvA Experiment at Fermilab, we discuss sources of cost variance and derive cost risk assessment methods applicable to the future linear collider, through its two technical approaches for ILC and CLIC. We also address disparities in cost risk assessment imposed by regional differences in regulations, procedures and practices.

  2. High-Dose-Rate Brachytherapy Alone for Localized Prostate Cancer in Patients at Moderate or High Risk of Biochemical Recurrence

    SciTech Connect (OSTI)

    Hoskin, Peter [Cancer Centre, Mount Vernon Hospital, Northwood, Middlesex (United Kingdom); Rojas, Ana, E-mail: arc03@btconnect.com [Cancer Centre, Mount Vernon Hospital, Northwood, Middlesex (United Kingdom); Lowe, Gerry; Bryant, Linda; Ostler, Peter; Hughes, Rob; Milner, Jessica; Cladd, Helen [Cancer Centre, Mount Vernon Hospital, Northwood, Middlesex (United Kingdom)

    2012-03-15T23:59:59.000Z

    Purpose: To evaluate genitourinary (GU) and gastrointestinal (GI) morbidity and biochemical control of disease in patients with localized prostate adenocarcinoma treated with escalating doses per fraction of high-dose rate brachytherapy alone. Methods and Materials: A total of 197 patients were treated with 34 Gy in four fractions, 36 Gy in four fractions, 31.5 Gy in three fractions, or 26 Gy in two fractions. Median follow-up times were 60, 54, 36, and 6 months, respectively. Results: Incidence of early Grade {>=} 3 GU morbidity was 3% to 7%, and Grade 4 was 0% to 4%. During the first 12 weeks, the highest mean International Prostate Symptom Score (IPSS) value was 14, and between 6 months and 5 years it was 8. Grade 3 or 4 early GI morbidity was not observed. The 3-year actuarial rate of Grade 3 GU was 3% to 16%, and was 3% to 7% for strictures requiring surgery (4-year rate). An incidence of 1% Grade 3 GI events was seen at 3 years. Late Grade 4 GU or GI events were not observed. At 3 years, 99% of patients with intermediate-risk and 91% with high-risk disease were free of biochemical relapse (log-rank p = 0.02). Conclusions: There was no significant difference in urinary and rectal morbidity between schedules. Biochemical control of disease in patients with intermediate and high risk of relapse was good.

  3. Wildfire and development : why stronger links to land-use planning are needed to save lives, protect property, and minimize economic risk

    E-Print Network [OSTI]

    Mowery, Molly Anne

    2008-01-01T23:59:59.000Z

    Exploding growth along the Colorado Front Range has expanded the wildland-urban interface-the area where homes and vegetation mix. This area, known as the WUI, is at high risk of wildfires. Wildfire risk is based on both ...

  4. The Continuous Risk Profile Approach for the Identification of High Collision Concentration Locations on Congested Highways

    E-Print Network [OSTI]

    Chung, Koohong; Ragland, David R.; Madanat, Samer; Oh, Soon Mi

    2009-01-01T23:59:59.000Z

    The Continuous Risk Profile Approach for the IdentificationTHE CONTINUOUS RISK PROFILE APPROACH FOR THE IDENTIFICATIONwords continuous risk profile, traffic collision, proactive

  5. Baltimore County- Property Tax Credit for High Performance Buildings and Homes

    Broader source: Energy.gov [DOE]

    The state of Maryland permits local governments (Md Code: Property Tax § 9-242) to offer property tax credits for high performance buildings if they choose to do so. Baltimore County exercised this...

  6. Evaluating the impact of caprock and reservoir properties on potential risk of CO2 leakage after injection

    SciTech Connect (OSTI)

    Hou, Zhangshuan; Rockhold, Mark L.; Murray, Christopher J.

    2012-01-05T23:59:59.000Z

    Numerical models are essential tools for CO2 sequestration projects and should be included in the life cycle of a project. Common practice involves modeling the behavior of CO2 during and after injection using site-specific reservoir and caprock properties. Little has been done to systematically evaluate and compare the effects of a broad but realistic range of reservoir and caprock properties on potential CO2 leakage through caprock. Broad-based research addressing the impacts of caprock properties and their heterogeneity on seal permeation is absent. Efforts along this direction require obtaining information about the physically reasonable range of caprock and reservoir properties, effectively sampling the parameter space to fully explore the range of these properties, and performing flow and transport calculations using reliable numerical simulators. In this study, we identify the most important factors affecting CO2 leakage through intact caprock and try to understand the underlying mechanisms. We use caprock and reservoir properties from various field sites and literature data to identify the range of caprock thickness, permeability, and porosity that might occur. We use a quasi Monte Carlo sampling approach to ensure that the full range of caprock and seal properties is evaluated without bias. For each set of sampled properties, the migration of injected CO2 is simulated for up to 200 years using the water-salt-CO2 operational mode of the STOMP simulator. Preliminary results show that critical factors determining CO2 leakage rate through intact caprock are, in decreasing order of significance, the caprock thickness, caprock permeability, reservoir permeability, caprock porosity, and reservoir porosity. This study provides a function for prediction of potential CO2 leakage risk due to permeation of intact caprock, and identifies a range of acceptable seal thicknesses and permeability for sequestration projects. As a byproduct, the dependence of CO2 injectivity on reservoir properties is also evaluated.

  7. Concurrent Androgen Deprivation Therapy During Salvage Prostate Radiotherapy Improves Treatment Outcomes in High-Risk Patients

    SciTech Connect (OSTI)

    Soto, Daniel E., E-mail: dsoto2@partners.org [Department of Radiation Oncology, University of Michigan, Ann Arbor, MI (United States); Passarelli, Michael N.; Daignault, Stephanie [Cancer Center Biostatistics Core, University of Michigan, Ann Arbor, MI (United States); Sandler, Howard M. [Department of Radiation Oncology, University of Michigan, Ann Arbor, MI (United States)

    2012-03-01T23:59:59.000Z

    Purpose: To determine whether concurrent androgen deprivation therapy (ADT) during salvage radiotherapy (RT) improves prostate cancer treatment outcomes. Methods and Materials: A total of 630 postprostatectomy patients were retrospectively identified who were treated with three-dimensional conformal RT. Of these, 441 were found to be treated for salvage indications. Biochemical failure was defined as prostate-specific antigen (PSA) of 0.2 ng/mL or greater above nadir with another PSA increase or the initiation of salvage ADT. Progression-free survival (PFS) was defined as the absence of biochemical failure, continued PSA rise despite salvage therapy, initiation of systemic therapy, clinical progression, or distant failure. Multivariate-adjusted Cox proportional hazards modeling was performed to determine which factors predict PFS. Results: Low-, intermediate-, and high-risk patients made up 10%, 24%, and 66% of patients, respectively. The mean RT dose was 68 Gy. Twenty-four percent of patients received concurrent ADT (cADT). Regional pelvic nodes were treated in 16% of patients. With a median follow-up of 3 years, the 3-year PFS was 4.0 years for cADT vs. 3.4 years for cADT patients (p = 0.22). Multivariate analysis showed that concurrent ADT (p = 0.05), Gleason score (p < 0.001), and pre-RT PSA (p = 0.03) were independent predictors of PFS. When patients were stratified by risk group, the benefits of cADT (hazard ratio, 0.65; p = 0.046) were significant only for high-risk patients. Conclusions: This retrospective study showed a PFS benefit of concurrent ADT during salvage prostate RT. This benefit was observed only in high-risk patients.

  8. Causes of Death in Men With Prevalent Diabetes and Newly Diagnosed High- Versus Favorable-Risk Prostate Cancer

    SciTech Connect (OSTI)

    D'Amico, Anthony V., E-mail: adamico@partners.or [Department of Radiation Oncology, Brigham and Women's Hospital and Dana Farber Cancer Institute, Boston, MA (United States); Braccioforte, Michelle H.; Moran, Brian J. [Department of Radiation Oncology, Prostate Cancer Foundation of Chicago, Westmont, IL (United States); Chen, Ming-Hui [Department of Statistics, University of Connecticut, Storrs, CT (United States)

    2010-08-01T23:59:59.000Z

    Purpose: To determine whether prevalent diabetes mellitus (pDM) affects the presentation, extent of radiotherapy, or prostate cancer (PCa)-specific mortality (PCSM) and whether PCa aggressiveness affects the risk of non-PCSM, DM-related mortality, and all-cause mortality in men with pDM. Methods: Between October 1997 and July 2907, 5,279 men treated at the Chicago Prostate Cancer Center with radiotherapy for PCa were included in the study. Logistic and competing risk regression analyses were performed to assess whether pDM was associated with high-grade PCa, less aggressive radiotherapy, and an increased risk of PCSM. Competing risks and Cox regression analyses were performed to assess whether PCa aggressiveness described by risk group in men with pDM was associated with the risk of non-PCSM, DM-related mortality, and all-cause mortality. Analyses were adjusted for predictors of high-grade PCa and factors that could affect treatment extent and mortality. Results: Men with pDM were more likely (adjusted hazard ratio [AHR], 1.9; 95% confidence interval [CI], 1.3-2.7; p = .002) to present with high-grade PCa but were not treated less aggressively (p = .33) and did not have an increased risk of PCSM (p = .58) compared to men without pDM. Among the men with pDM, high-risk PCa was associated with a greater risk of non-PCSM (AHR, 2.2; 95% CI, 1.1-4.5; p = .035), DM-related mortality (AHR, 5.2; 95% CI, 2.0-14.0; p = .001), and all-cause mortality (AHR, 2.4; 95% CI, 1.2-4.7; p = .01) compared to favorable-risk PCa. Conclusion: Aggressive management of pDM is warranted in men with high-risk PCa.

  9. Remediation Progress of the High-Risk 618-10 Burial Ground at Hanford 12427

    SciTech Connect (OSTI)

    Haass, M.J. [Washington Closure Hanford, 2620 Fermi Avenue, Richland, WA 99354 (United States); Walton, Z.P. [Vista Engineering Technologies LLC, 1355 Columbia Park Trail, Richland, WA 99352 (United States)

    2012-07-01T23:59:59.000Z

    The 618-10 Burial Ground was in operation from 1954 to 1963 and consists of 94 vertical pipe disposal units (VPUs) and 12 solid waste disposal trenches. Remediation of the trenches began in March of 2011 under the River Corridor Closure Contract (RCCC)a. This work was considered to be high risk because the trenches are known to contain a large radiological inventory and have the potential to release airborne contaminants. Remediation is being performed without a containment structure by using a combination of engineering controls and monitoring equipment. The engineering controls include storing material below grade using a surge trench, the application of soil fixatives, and applying material storage limits. The use of radiological and chemical monitoring equipment is also used to provide near real-time information to guide remediation activities and limit contact of waste until risks can be evaluated. Remediation of the trenches is progressing without any significant personnel or environmental issues. (authors)

  10. Risk analysis of highly combustible gas storage, supply, and distribution systems in PWR plants

    SciTech Connect (OSTI)

    Simion, G.P. [Science Applications International Corp., Albuquerque, NM (United States); VanHorn, R.L.; Smith, C.L.; Bickel, J.H.; Sattison, M.B. [EG and G Idaho, Inc., Idaho Falls, ID (United States); Bulmahn, K.D. [SCIENTECH, Inc., Idaho Falls, ID (United States)

    1993-06-01T23:59:59.000Z

    This report presents the evaluation of the potential safety concerns for pressurized water reactors (PWRs) identified in Generic Safety Issue 106, Piping and the Use of Highly Combustible Gases in Vital Areas. A Westinghouse four-loop PWR plant was analyzed for the risk due to the use of combustible gases (predominantly hydrogen) within the plant. The analysis evaluated an actual hydrogen distribution configuration and conducted several sensitivity studies to determine the potential variability among PWRs. The sensitivity studies were based on hydrogen and safety-related equipment configurations observed at other PWRs within the United States. Several options for improving the hydrogen distribution system design were identified and evaluated for their effect on risk and core damage frequency. A cost/benefit analysis was performed to determine whether alternatives considered were justifiable based on the safety improvement and economics of each possible improvement.

  11. FORUM | PLANETARY SCIENCE & ASTROBIOLOGY Jupiter exploration: high risk and high rewards

    E-Print Network [OSTI]

    Kite, Edwin

    Generators (RTGs), or even solar panels [Noca et al., 2002], are likely better suited to a Jupiter orbital Department of Energy (DoE)/NASA programme to develop advanced radioisotope power sources and nuclear fission reactors [Johnson, 2003]. Compact, high-output power is a prerequisite for piloted deep-space missions

  12. Thermoelectric properties of high quality nanostructured Ge:Mn thin D. Tanoff2*

    E-Print Network [OSTI]

    Boyer, Edmond

    Thermoelectric properties of high quality nanostructured Ge:Mn thin films D. Taïnoff2* , A. Barski2 nanostructured thin films and the measurement of their thermoelectric properties. We investigate the growth of Ge temperature thermoelectric properties of these layers containing spherical inclusions are discussed regarding

  13. Draft Genome Sequences of Helicobacter pylori Strains Isolated from Regions of Low and High Gastric Cancer Risk in Colombia

    E-Print Network [OSTI]

    Sheh, Alexander

    The draft genome sequences of six Colombian Helicobacter pylori strains are presented. These strains were isolated from patients from regions of high and low gastric cancer risk in Colombia and were characterized by ...

  14. High-Oleic Ground Beef, Exercise, and Risk Factors for Cardiovascular Disease in Men and Postmenopausal Women

    E-Print Network [OSTI]

    Gilmore, Linda Anne

    2012-02-14T23:59:59.000Z

    HIGH-OLEIC GROUND BEEF, EXERCISE, AND RISK FACTORS FOR CARDIOVASCULAR DISEASE IN MEN AND POSTMENOPAUSAL WOMEN A Dissertation by LINDA ANNE GILMORE Submitted to the Office of Graduate Studies of Texas A&M University in partial... fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY December 2010 Major Subject: Nutrition HIGH-OLEIC GROUND BEEF, EXERCISE, AND RISK FACTORS FOR CARDIOVASCULAR DISEASE IN MEN AND POSTMENOPAUSAL WOMEN A Dissertation...

  15. High temperature magnetic properties of SmCo5/-Fe(Co) bulk nanocomposite magnets

    E-Print Network [OSTI]

    Liu, J. Ping

    High temperature magnetic properties of SmCo5/-Fe(Co) bulk nanocomposite magnets Chuanbing Rong://apl.aip.org/about/rights_and_permissions #12;High temperature magnetic properties of SmCo5/a-Fe(Co) bulk nanocomposite magnets Chuanbing Rong,1 containing no heavy rare earths for power applications, SmCo5/Fe bulk nanocomposite magnets with enhanced

  16. HIGH TEMPERATURE CREEP PROPERTIES AND MICROSTRUCTURAL EXAMINATIONS OF P92 WELDS

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 HIGH TEMPERATURE CREEP PROPERTIES AND MICROSTRUCTURAL EXAMINATIONS OF P92 WELDS Kalck Charlotte1 for high temperature components and especially for welded components. Its main targeted applications: charlotte.kalck@cea.fr Abstract The present study deals with the creep properties of welded joints made of P

  17. A comparison between integrated risk assessment and classical health/environmental assessment: Emerging beneficial properties

    SciTech Connect (OSTI)

    Sekizawa, Jun [Faculty of Integrated Arts and Sciences, University of Tokushima, Japan, 1-1 Minamijosanjimacho, Tokushima 770-8502 (Japan)]. E-mail: sekizawa@ias.tokushima-u.ac.jp; Tanabe, Shinsuke [Center for Marine Environmental Studies, Ehime University, 2-5 Bunkyocho, Matsuyama, Ehime 790-8577 (Japan)

    2005-09-01T23:59:59.000Z

    Both humans and wildlife are exposed to various types of halogenated organic compounds such as polychlorinated biphenyls (PCBs) and dichlorodiphenyltrichloroethane (DDT), typically old chemicals, and tris(4-chlorophenyl) methane (TCPM) and brominated flame retardants, some new chemicals, simultaneously. Classical risk assessment has evaluated health and ecological risks independently by experts from different disciplines. Taking into considerations the recent concerns about endocrine disrupting chemicals and the progress of research in related areas, we integrated and assessed data on exposure and potential effects in humans and wildlife. Comparisons were made for organ concentrations, body burdens of several organochlorine compounds (OCs), metabolic capacities between humans and various wildlife. When we integrate the knowledge on effects and exposure in humans and in wildlife, new insights were suggested about similarities and/or differences in potential effects among various human populations living on different foods and having different body burdens. Combining existing information with emerging knowledge of mechanisms of actions on endocrine disrupting chemicals after exposure to above chemicals during early developmental stages will further elucidate potential risks from exposure to those chemicals.

  18. Proton Radiotherapy for High-Risk Pediatric Neuroblastoma: Early Outcomes and Dose Comparison

    SciTech Connect (OSTI)

    Hattangadi, Jona A. [Harvard Radiation Oncology Program, Boston, MA (United States); Rombi, Barbara [Department of Radiation Oncology, Massachusetts General Hospital, Boston, MA (United States); Provincial Agency for Proton Therapy, Trento (Italy); Yock, Torunn I.; Broussard, George [Department of Radiation Oncology, Massachusetts General Hospital, Boston, MA (United States); Friedmann, Alison M.; Huang, Mary [Department of Pediatric Hematology-Oncology, Massachusetts General Hospital, Boston, MA (United States); Chen, Yen-Lin E.; Lu, Hsiao-Ming; Kooy, Hanne [Department of Radiation Oncology, Massachusetts General Hospital, Boston, MA (United States); MacDonald, Shannon M., E-mail: smacdonald@partners.org [Department of Radiation Oncology, Massachusetts General Hospital, Boston, MA (United States)

    2012-07-01T23:59:59.000Z

    Purpose: To report the early outcomes for children with high-risk neuroblastoma treated with proton radiotherapy (RT) and to compare the dose distributions for intensity-modulated photon RT (IMRT), three-dimensional conformal proton RT (3D-CPT), and intensity-modulated proton RT to the postoperative tumor bed. Methods and Materials: All patients with high-risk (International Neuroblastoma Staging System Stage III or IV) neuroblastoma treated between 2005 and 2010 at our institution were included. All patients received induction chemotherapy, surgical resection of residual disease, high-dose chemotherapy with stem cell rescue, and adjuvant 3D-CPT to the primary tumor sites. The patients were followed with clinical examinations, imaging, and laboratory testing every 6 months to monitor disease control and side effects. IMRT, 3D-CPT, and intensity-modulated proton RT plans were generated and compared for a representative case of adjuvant RT to the primary tumor bed followed by a boost. Results: Nine patients were treated with 3D-CPT. The median age at diagnosis was 2 years (range 10 months to 4 years), and all patients had Stage IV disease. All patients had unfavorable histologic characteristics (poorly differentiated histologic features in 8, N-Myc amplification in 6, and 1p/11q chromosomal abnormalities in 4). The median tumor size at diagnosis was 11.4 cm (range 7-16) in maximal dimension. At a median follow-up of 38 months (range 11-70), there were no local failures. Four patients developed distant failure, and, of these, two died of disease. Acute side effects included Grade 1 skin erythema in 5 patients and Grade 2 anorexia in 2 patients. Although comparable target coverage was achieved with all three modalities, proton therapy achieved substantial normal tissue sparing compared with IMRT. Intensity-modulated proton RT allowed additional sparing of the kidneys, lungs, and heart. Conclusions: Preliminary outcomes reveal excellent local control with proton therapy for high-risk neuroblastoma, although distant failures continu to occur. Dosimetric comparisons demonstrate the advantage of proton RT compared with IMRT in this setting, allowing more conformal treatment and better normal tissue sparing.

  19. The Department's real property assets are vital to the accomplishment...

    Office of Environmental Management (EM)

    validation assessments. Finally, in FY 2007, the General Accountability Office (GAO) report updating the high risk status of Federal Real Property contained no negative findings...

  20. Electronic properties of doped Mott insulators and high temperature superconductors

    E-Print Network [OSTI]

    Ribeiro, Tiago Castro

    2005-01-01T23:59:59.000Z

    High-temperature superconducting cuprates, which are the quintessential example of a strongly correlated system and the most extensively studied materials after semiconductors, spurred the development in the fields of ...

  1. Low- and high-risk human papillomavirus E7 proteins regulate p130 differently

    SciTech Connect (OSTI)

    Barrow-Laing, Lisa; Chen Wei [Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, IN 46202 (United States); Roman, Ann, E-mail: aroman@iupui.ed [Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, IN 46202 (United States)

    2010-05-10T23:59:59.000Z

    The E7 protein of high-risk human papillomaviruses (HR HPVs) targets pRb family members (pRb, p107 and p130) for degradation; low-risk (LR) HPV E7 only targets p130 for degradation. The effect of HR HPV 16 E7 and LR HPV 6 E7 on p130 intracellular localization and half-life was examined. Nuclear/cytoplasmic fractionation and immunofluorescence showed that, in contrast to control and HPV 6 E7-expressing cells, a greater amount of p130 was present in the cytoplasm in the presence of HPV 16 E7. The half-life of p130, relative to control cells, was decreased in the cytoplasm in the presence of HPV 6 E7 or HPV 16 E7, but only decreased by HPV 6 E7 in the nucleus. Inhibition of proteasomal degradation extended the half-life of p130, regardless of intracellular localization. These results suggest that there may be divergent mechanisms by which LR and HR HPV E7 target p130 for degradation.

  2. Glass Property Data and Models for Estimating High-Level Waste Glass Volume

    SciTech Connect (OSTI)

    Vienna, John D.; Fluegel, Alexander; Kim, Dong-Sang; Hrma, Pavel R.

    2009-10-05T23:59:59.000Z

    This report describes recent efforts to develop glass property models that can be used to help estimate the volume of high-level waste (HLW) glass that will result from vitrification of Hanford tank waste. The compositions of acceptable and processable HLW glasses need to be optimized to minimize the waste-form volume and, hence, to save cost. A database of properties and associated compositions for simulated waste glasses was collected for developing property-composition models. This database, although not comprehensive, represents a large fraction of data on waste-glass compositions and properties that were available at the time of this report. Glass property-composition models were fit to subsets of the database for several key glass properties. These models apply to a significantly broader composition space than those previously publised. These models should be considered for interim use in calculating properties of Hanford waste glasses.

  3. Identification of the nuclear localization and export signals of high risk HPV16 E7 oncoprotein

    SciTech Connect (OSTI)

    Knapp, Alixandra A.; McManus, Patrick M.; Bockstall, Katy [Biology Department, Boston College, Higgins Hall, Room 578, 140 Commonwealth Avenue, Chestnut Hill, MA 02467 (United States); Moroianu, Junona [Biology Department, Boston College, Higgins Hall, Room 578, 140 Commonwealth Avenue, Chestnut Hill, MA 02467 (United States)], E-mail: moroianu@bc.edu

    2009-01-05T23:59:59.000Z

    The E7 oncoprotein of high risk human papillomavirus type 16 (HPV16) binds and inactivates the retinoblastoma (RB) family of proteins. Our previous studies suggested that HPV16 E7 enters the nucleus via a novel Ran-dependent pathway independent of the nuclear import receptors (Angeline, M., Merle, E., and Moroianu, J. (2003). The E7 oncoprotein of high-risk human papillomavirus type 16 enters the nucleus via a nonclassical Ran-dependent pathway. Virology 317(1), 13-23.). Here, analysis of the localization of specific E7 mutants revealed that the nuclear localization of E7 is independent of its interaction with pRB or of its phosphorylation by CKII. Fluorescence microscopy analysis of enhanced green fluorescent protein (EGFP) and 2xEGFP fusions with E7 and E7 domains in HeLa cells revealed that E7 contains a novel nuclear localization signal (NLS) in the N-terminal domain (aa 1-37). Interestingly, treatment of transfected HeLa cells with two specific nuclear export inhibitors, Leptomycin B and ratjadone, changed the localization of 2xEGFP-E7{sub 38-98} from cytoplasmic to mostly nuclear. These data suggest the presence of a leucine-rich nuclear export signal (NES) and a second NLS in the C-terminal domain of E7 (aa 38-98). Mutagenesis of critical amino acids in the putative NES sequence ({sub 76}IRTLEDLLM{sub 84}) changed the localization of 2xEGFP-E7{sub 38-98} from cytoplasmic to mostly nuclear suggesting that this is a functional NES. The presence of both NLSs and an NES suggests that HPV16 E7 shuttles between the cytoplasm and nucleus which is consistent with E7 having functions in both of these cell compartments.

  4. High temperature thermoelectric properties of the solid-solution zintl

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC) EnvironmentalGyroSolé(tm) Harmonicbet WhenHiggs BosonAccurate knowledgeHighHigh

  5. ASSOCIATIONS BETWEEN POLYMORPHISMS AND ABNORMAL RPFNA CYTOMORPHOLOGY IN HIGH-RISK POSTMENOPAUSAL WOMEN TAKING HRT

    E-Print Network [OSTI]

    Michaels, Whitney Lee

    2014-08-31T23:59:59.000Z

    Introduction: Hormone replacement therapy (HRT) is an effective treatment option for women experiencing symptoms of menopause but long-term use is associated with an increased risk of breast cancer. HRT-related breast cancer risk is dependent...

  6. PROPERTIES OF RELATIVELY-DILUTEPLASMAS IN PULSED-POWER SYSTEMS OBTAINED FROM HIGH-ACCURACY LASER

    E-Print Network [OSTI]

    Doron, Ramy

    Transmission Lines, Plasma Switches, Ion and Electron Diodes, and Plasma Sources. I.INTRODUCTION Atomic physicsPROPERTIES OF RELATIVELY-DILUTEPLASMAS IN PULSED-POWER SYSTEMS OBTAINED FROM HIGH-ACCURACY LASER application of laser-spectroscopy to investigate the electric fields and the properties of relatively dilute

  7. Information content of slug tests for estimating hydraulic properties in realistic, high-conductivity aquifer scenarios

    E-Print Network [OSTI]

    Barrash, Warren

    Information content of slug tests for estimating hydraulic properties in realistic, high for partially-penetrating slug tests in unconfined aquifers (Malama et al., in press) provides a semi the ultimate goal of determining aquifer properties such as hydraulic conductivity K and specific storage Ss

  8. Production and Properties of Solidified High-Level

    E-Print Network [OSTI]

    #12;#12;- 5 - 1. INTRODUCTION For more than 30 years, reprocessing of spent nuclear fuel has taken assistance from Risø to ELSAM/ELKRAFT's waste management project. Abstract. Available information form. Liquid high-level waste will also be produced by future reprocessing of power reactor fuel

  9. Effect of high temperature on mechanical and physical properties of lightweight cement

    E-Print Network [OSTI]

    North Texas, University of

    Effect of high temperature on mechanical and physical properties of lightweight cement based are used for fire resistance applications. Concrete with vermiculite can be used as cement based refractory. Keywords: Expanded vermiculite, Lightweight concrete, Cement based refractory Introduction Concrete

  10. An instrument for high-throughput measurements of fiber mechanical properties

    E-Print Network [OSTI]

    Kristofek, Grant William, 1980-

    2005-01-01T23:59:59.000Z

    In this thesis, an instrument is designed and constructed for the purpose of measuring the mechanical properties of single fibers. The instrument is intended to provide high throughput measurement of single fiber geometric ...

  11. High-field remanence properties of synthetic and natural submicrometre haematites and goethites: significance

    E-Print Network [OSTI]

    High-field remanence properties of synthetic and natural submicrometre haematites and goethites September 2004 Editor: V. Courtillot Abstract Haematite and goethite are significant magnetic components both of marine and terrestrial sediments. Variable magnetic behaviour in haematite and goethite has

  12. Quantum properties of high-Q macroscopic resonators

    SciTech Connect (OSTI)

    Dodonov, V.V.; Man'ko, V.I.; Rudenko, V.N.

    1980-10-01T23:59:59.000Z

    An analysis is made of the quantum characteristics of the behavior of an electromagnetic (acoustic) resonator over intervals shorter than the relaxation time. As a result of the high Q factor, weak coupling of various modes is assumed. By considering a single mode, it can be shown that evolution of all the moments (and not only of the first) is described by classical equations for any initial states. The probabilities of transitions between groups of energy levels in the quasiclassical case (E/sub av/ >> ..delta..E >> h..omega..) can also be calculated using classical equations. The possibility of observing experimentally the quantum nature of Brownian fluctuations of a high-Q resonator is discussed.

  13. Iron aluminide alloys with improved properties for high temperature applications

    DOE Patents [OSTI]

    McKamey, Claudette G. (Knoxville, TN); Liu, Chain T. (Oak Ridge, TN)

    1990-01-01T23:59:59.000Z

    An improved iron aluminide alloy of the DO.sub.3 type that has increased room temperature ductility and improved high elevated temperature strength. The alloy system further is resistant to corrosive attack in the environments of advanced energy corrosion systems such as those using fossil fuels. The resultant alloy is relatively inexpensive as contrasted to nickel based and high nickel steels currently utilized for structural components. The alloy system consists essentially of 26-30 at. % aluminum, 0.5-10 at. % chromium, 0.02-0.3 at. % boron plus carbon, up to 2 at. % molybdenum, up to 1 at. % niobium, up to 0.5 at. % zirconium, up to 0.1 at. % yttrium, up to 0.5 at. % vanadium and the balance iron.

  14. Iron aluminide alloys with improved properties for high temperature applications

    DOE Patents [OSTI]

    McKamey, C.G.; Liu, C.T.

    1990-10-09T23:59:59.000Z

    An improved iron aluminide alloy of the DO[sub 3] type is described that has increased room temperature ductility and improved high elevated temperature strength. The alloy system further is resistant to corrosive attack in the environments of advanced energy conversion systems such as those using fossil fuels. The resultant alloy is relatively inexpensive as contrasted to nickel based and high nickel steels currently utilized for structural components. The alloy system consists essentially of 26--30 at. % aluminum, 0.5--10 at. % chromium, 0.02--0.3 at. % boron plus carbon, up to 2 at. % molybdenum, up to 1 at. % niobium, up to 0.5 at. % zirconium, up to 0.1 at. % yttrium, up to 0.5 at. % vanadium and the balance iron. 3 figs.

  15. Property:EstimatedTimeHigh | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation,PillarPublicationTypeEstimatedCostMedianUSD Jump to: navigation,EstimatedTimeHigh

  16. Risk perception on management of nuclear high-level and transuranic waste storage

    SciTech Connect (OSTI)

    Dees, L.A.

    1994-08-15T23:59:59.000Z

    The Department of Energy`s program for disposing of nuclear High-Level Waste (HLW) and transuranic (TRU) waste has been impeded by overwhelming political opposition fueled by public perceptions of actual risk. Analysis of these perceptions shows them to be deeply rooted in images of fear and dread that have been present since the discovery of radioactivity. The development and use of nuclear weapons linked these images to reality and the mishandling of radioactive waste from the nations military weapons facilities has contributed toward creating a state of distrust that cannot be erased quickly or easily. In addition, the analysis indicates that even the highly educated technical community is not well informed on the latest technology involved with nuclear HLW and TRU waste disposal. It is not surprising then, that the general public feels uncomfortable with DOE`s management plans for with nuclear HLW and TRU waste disposal. Postponing the permanent geologic repository and use of Monitored Retrievable Storage (MRS) would provide the time necessary for difficult social and political issues to be resolved. It would also allow time for the public to become better educated if DOE chooses to become proactive.

  17. Properties of heterogeneous energetic materials under high strain, high strain rate deformation

    E-Print Network [OSTI]

    Cai, Jing

    2007-01-01T23:59:59.000Z

    reactions in self-propagating high-temperature synthesis (as self-propagating high-temperature synthesis (SHS). Tablein self-propagating high-temperature synthesis (SHS)[32] In

  18. Properties of localized, high latitude, dayside aurora H. U. Frey,1

    E-Print Network [OSTI]

    California at Berkeley, University of

    Properties of localized, high latitude, dayside aurora H. U. Frey,1 T. J. Immel,1 G. Lu,2 J different type of high latitude aurora, which does not show any signature of precipitating protons. It also causes the aurora. We interpret this aurora as the optical signature of electron precipitation

  19. Epoxy Nanocomposites with Highly Exfoliated Clay: Mechanical Properties and Fracture Mechanisms

    E-Print Network [OSTI]

    George, Steven C.

    Epoxy Nanocomposites with Highly Exfoliated Clay: Mechanical Properties and Fracture Mechanisms Ke; Revised Manuscript Received November 9, 2004 ABSTRACT: Epoxy/clay nanocomposites with a better exfoliated and transmission electron microscopy (TEM). It was found that clay was highly exfoliated and uniformly dispersed

  20. Energy balance properties of steels subjected to high cycle A. Chrysochoos1

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    associated with the fatigue of a dual-phase steel often used in mechanical industries. This paper is composedEnergy balance properties of steels subjected to high cycle fatigue A. Chrysochoos1 , A. Blanche1 estimate the different terms of the energy balance associated with the high cycle fatigue (HCF) of steels

  1. Assessing the Thermoelectric Properties of Sintered Compounds via High-Throughput Ab-Initio Calculations

    E-Print Network [OSTI]

    Curtarolo, Stefano

    Assessing the Thermoelectric Properties of Sintered Compounds via High-Throughput Ab Database have been considered as nanograined, sintered-powder thermoelectrics with the high-throughput ab the electronic band gap and the carrier effective mass, and that the probability of having large thermoelectric

  2. Two-phase chromium-niobium alloys exhibiting improved mechanical properties at high temperatures

    DOE Patents [OSTI]

    Liu, C.T.; Takeyama, Masao.

    1994-02-01T23:59:59.000Z

    The specification discloses chromium-niobium alloys which exhibit improved mechanical properties at high temperatures in the range of 1250 C and improved room temperature ductility. The alloys contain a Cr[sub 2]Nb-rich intermetallic phase and a Cr-rich phase with an overall niobium concentration in the range of from about 5 to about 18 at. %. The high temperature strength is substantially greater than that of state of the art nickel-based superalloys for enhanced high temperature service. Further improvements in the properties of the compositions are obtained by alloying with rhenium and aluminum; and additional rare-earth and other elements. 14 figures.

  3. Two-phase chromium-niobium alloys exhibiting improved mechanical properties at high temperatures

    DOE Patents [OSTI]

    Liu, Chain T. (Oak Ridge, TN); Takeyama, Masao (Tokyo, JP)

    1994-01-01T23:59:59.000Z

    The specification discloses chromium-niobium alloys which exhibit improved mechanical properties at high temperatures in the range of 1250.degree. C. and improved room temperature ductility. The alloys contain a Cr.sub.2 Nb-rich intermetallic phase and a Cr-rich phase with an overall niobium concentration in the range of from about 5 to about 18 at. %. The high temperature strength is substantially greater than that of state of the art nickel-based superalloys for enhanced high temperature service. Further improvements in the properties of the compositions are obtained by alloying with rhenium and aluminum; and additional rare-earth and other elements.

  4. Identifying Men Diagnosed With Clinically Localized Prostate Cancer Who are at High Risk for Death From Prostate Cancer

    E-Print Network [OSTI]

    Chen, Ming-Hui

    Identifying Men Diagnosed With Clinically Localized Prostate Cancer Who are at High Risk for Death From Prostate Cancer Anthony V. D'Amico,* Ming Hui-Chen, Andrew A. Renshaw, Brenda Sussman, Kimberly A), Brigham and Women's Hospital and Dana Farber Cancer Institute, Boston, Massachusetts, Department

  5. FRAPCON-3: Modifications to fuel rod material properties and performance models for high-burnup application

    SciTech Connect (OSTI)

    Lanning, D.D.; Beyer, C.E.; Painter, C.L.

    1997-12-01T23:59:59.000Z

    This volume describes the fuel rod material and performance models that were updated for the FRAPCON-3 steady-state fuel rod performance code. The property and performance models were changed to account for behavior at extended burnup levels up to 65 Gwd/MTU. The property and performance models updated were the fission gas release, fuel thermal conductivity, fuel swelling, fuel relocation, radial power distribution, solid-solid contact gap conductance, cladding corrosion and hydriding, cladding mechanical properties, and cladding axial growth. Each updated property and model was compared to well characterized data up to high burnup levels. The installation of these properties and models in the FRAPCON-3 code along with input instructions are provided in Volume 2 of this report and Volume 3 provides a code assessment based on comparison to integral performance data. The updated FRAPCON-3 code is intended to replace the earlier codes FRAPCON-2 and GAPCON-THERMAL-2. 94 refs., 61 figs., 9 tabs.

  6. Lack of benefit of pelvic radiation in prostate cancer patients with a high risk of positive pelvic lymph nodes treated with high-dose radiation

    SciTech Connect (OSTI)

    Vargas, Carlos Enrique [William Beaumont Hospital, Royal Oak, MI (United States); Galalae, Razavan [Kiel University Hospital, Kiel (Germany); Demanes, Jeffrey [California Endocuritherapy Cancer Center, Oakland, CA (United States); Harsolia, Asif [William Beaumont Hospital, Royal Oak, MI (United States); Meldolesi, Elisa [William Beaumont Hospital, Royal Oak, MI (United States); Nuernberg, Nils [Municipal Hospital Kiel, Kiel (Germany); Schour, Lionel [California Endocuritherapy Cancer Center, Oakland, CA (United States); Martinez, Alvaro [William Beaumont Hospital, Royal Oak, MI (United States)]. E-mail: amartinez@beaumont.edu

    2005-12-01T23:59:59.000Z

    Purpose: The use of pelvic radiation for patients with a high risk of lymph node (LN) metastasis (>15%) remains controversial. We reviewed the data at three institutions treating patients with a combination of external-beam radiation therapy and high-dose-rate brachytherapy to address the prognostic implications of the use of the Roach formula and the benefit of pelvic treatment. Methods and Materials: From 1986 to 2003, 1,491 patients were treated with external-beam radiation therapy and high-dose-rate brachytherapy. The Roach formula [2/3 prostate-specific antigen + (Gleason score -6) x 10] could be calculated for 1,357 patients. Group I consisted of patients having a risk of positive LN {<=}15% (n = 761), Group II had a risk >15% and {<=}30% (n = 422), and Group III had a risk of LN disease >30% (n 174). A >15% risk of having positive LN was found in 596 patients and was used to determine the benefit of pelvic radiation. The pelvis was treated at two of the cancer centers (n = 312), whereas at the third center (n = 284) radiation therapy was delivered to the prostate and seminal vesicles alone. Average biologic effective dose was {>=}100 Gy ({alpha}{beta} = 1.2). Biochemical failure was as per the American Society for Therapeutic Radiology and Oncology definition. Statistics included the log-rank test as well as Cox univariate and multivariate analysis. Results: For all 596 patients with a positive LN risk >15%, median follow-up was 4.3 years, with a mean of 4.8 years. For all cases, median follow-up was 4 years and mean follow-up was 4.4 years. Five-year results for the three groups based on their risk of positive LN were significantly different in terms of biochemical failure (p < 0.001), clinical control (p < 0.001), disease-free survival excluding biochemical failure (p < 0.001), cause-specific survival (p < 0.001), and overall survival (p < 0.001). For all patients with a risk of positive LN >15% (n 596), Group II (>15-30% risk), or Group III (>30% risk), no benefit was seen in the 5-year rates of clinical failure, cause-specific survival, or overall survival with pelvic radiation. In the Cox multivariate analysis for cause-specific survival, Gleason score (p = 0.009, hazard ratio [HR] 3.1), T stage (p = 0.03, HR 1.8), and year of treatment (p = 0.05, HR 1.1) were significant. A log-rank test for cause-specific survival for all patients (n = 577) by the use of pelvic radiation was not significant (p = 0.99) accounting for high-dose-rate brachytherapy dose, neoadjuvant hormones, Gleason score, prostate-specific antigen, T stage, and year of treatment as covariates. Conclusions: The use of the Roach formula to stratify patients for clinical and biochemical outcomes is excellent. Pelvic radiation added to high prostate radiation doses did not show a clinical benefit for patients at a high risk of pelvic LN disease (>15%) selected using the Roach formula.

  7. Teacher Mentoring as an Intervention with At-Risk High School Students

    E-Print Network [OSTI]

    Coffman, Mae G.

    2010-01-14T23:59:59.000Z

    As a result of recent social and political pressure and an increase in academic standards, there is a call to address academic and behavioral needs of at-risk students at the secondary level. Currently, many secondary schools are struggling...

  8. The Departments real property assets are vital to the accomplishment...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    validation assessments. Finally, in FY 2007, the General Accountability Office (GAO) report updating the high risk status of Federal Real Property contained no negative findings...

  9. Endovascular Stenting of Peripheral Infected Aneurysms: A Temporary Measure or a Definitive Solution in High-Risk Patients

    SciTech Connect (OSTI)

    Riga, Celia, E-mail: c.riga@imperial.ac.u [Vascular Secretaries Office (United Kingdom); Bicknell, Colin; Jindal, Ravul; Cheshire, Nicholas [St Mary's Hospital, Regional Vascular Unit (United Kingdom); Hamady, Mohamad [St Mary's Hospital, Department of Interventional Radiology (United Kingdom)

    2008-11-15T23:59:59.000Z

    The purpose of this study was to demonstrate the use of endovascular technology in the management of peripheral infected aneurysms in high-risk patients as a temporary measure or definitive solution. Five cases underwent successful endovascular stenting of infected aneurysms of the subclavian, femoral, and carotid arteries. All these patients were at high risk for open surgery. Covered stents were placed by percutaneous approach under local anesthesia in all patients. Postoperatively, antibiotics were continued for 3 months. A literature review using the Medline database was also undertaken, and all the relevant papers on endovascular management of peripheral infected aneurysms were taken into account. Stent deployment was successful in all patients. One patient died of mediastinal sepsis and another from type A aortic dissection 5 weeks later. Two patients required drainage of the infected hematoma. Three patients did well at a median follow-up of 1 year, with no evidence of sepsis. A review of the literature shows promising early and midterm results. Most early reports were of single cases, reflecting the low incidence of peripheral infected aneurysms. We conclude that further development of endoluminal techniques and long-term follow-up to establish the durability of stenting could potentially lead to a decrease in the high morbidity and mortality rates associated with infected aneurysmal disease in this high-risk group of patients.

  10. High-Oleic Ground Beef, Exercise, and Risk Factors for Cardiovascular Disease in Men and Postmenopausal Women 

    E-Print Network [OSTI]

    Gilmore, Linda Anne

    2012-02-14T23:59:59.000Z

    , Guoyao Wu Joanne R. Lupton John E. Bauer Chair of Nutrition Faculty, Stephen B. Smith December 2010 Major Subject: Nutrition iii ABSTRACT High-Oleic Ground Beef, Exercise, and Risk Factors for Cardiovascular Disease in Men.... Bauer, Dr. Crouse, and Dr. Martin for their guidance and support throughout the course of this research. Thank you also to my colleagues and the department faculty and staff for making my time at Texas A&M University a great experience. I also want...

  11. Determination of thermodynamic and kinetic properties of grain boundaries using high temperature calorimetry

    SciTech Connect (OSTI)

    Terwilliger, C.D.; Chiang, Y.M. (Massachusetts Inst. of Tech., Cambridge, MA (USA)); Eastman, J.A.; Liao, Y. (Argonne National Lab., IL (USA))

    1991-06-01T23:59:59.000Z

    This work explores the use of high temperature differential scanning calorimetry as a novel way in which to measure thermodynamic and kinetic properties of grain boundaries in ceramics. A calorimetric study of grain growth has become practical only recently, with the development of processing methods for nanocrystalline materials (10--50 nm grain size) that have enough grain boundary area and thus grain boundary excess properties to be detected by commercial calorimeters. Here we report results from experiments on nanocrystalline silicon and titanium dioxide. 14 refs., 6 figs.

  12. Utilization of the microsomal epoxide hydolase gene for the detection of high risk epileptic pregnancies

    E-Print Network [OSTI]

    Bielec, Barbara Young

    1997-01-01T23:59:59.000Z

    studies, both animal and human, suggest that susceptibility to fetal anti-epileptic drug effects (FADE) may be linked to variation in the mEH gene. Low levels of mEH activity are associated with an increased risk for FADE and can be used to identify...

  13. High damping properties of magnetic particles doped rubber composites at wide frequency

    SciTech Connect (OSTI)

    Tian, Ye, E-mail: schtiany@163.com [Research Center for Engineering Technology of Polymeric Composites of Shanxi Province, North University of China, Taiyuan 030051 (China); College of Material Science and Engineering, North University of China, Taiyuan 030051 (China); Liu, Yaqing, E-mail: lyq@nuc.edu.cn [Research Center for Engineering Technology of Polymeric Composites of Shanxi Province, North University of China, Taiyuan 030051 (China); College of Material Science and Engineering, North University of China, Taiyuan 030051 (China); He, Minhong; Zhao, Guizhe; Sun, Youyi [Research Center for Engineering Technology of Polymeric Composites of Shanxi Province, North University of China, Taiyuan 030051 (China); College of Material Science and Engineering, North University of China, Taiyuan 030051 (China)

    2013-05-15T23:59:59.000Z

    Highlights: ? A new kind of permanent magnetic rubber was prepared. ? The microstructure and magnetic properties were investigated. ? The mechanical and damping properties were discussed. ? The new material is expected to be an isolator material to a changed frequency. - Abstract: A new kind of rubber composite was prepared by doping SrFe{sub 12}O{sub 19} nanoparticles coated with silane coupling agents (Si-69) into nitrile butadiene rubber (NBR) matrix, which was characterized by the scanning electron microscopy and X-ray spectroscopy. The results showed that the SrFe{sub 12}O{sub 19} nanoparticles were well dispersed in rubber matrix. Furthermore, the mechanical and magnetic properties of the rubber composites were investigated, in which the high tensile strength (15.8 MPa) and high saturation magnetization (22.9 emu/g) were observed. What is more, the high loss factor of the rubber composites was also obtained in a wide frequency range (0–100 Hz) at high loading (80 phr). The result is attributed to that the permanent magnetic field in rubber nanocomposites can absorb shock energy. These results indicate that the new kind of permanent magnetic rubber is expected to be a smart isolator material, in which the isolator will be able to adapt to a changed frequency.

  14. Updated Results and Patterns of Failure in a Randomized Hypofractionation Trial for High-risk Prostate Cancer

    SciTech Connect (OSTI)

    Arcangeli, Stefano [Department of Radiation Oncology, Regina Elena National Cancer Institute, Rome (Italy)] [Department of Radiation Oncology, Regina Elena National Cancer Institute, Rome (Italy); Strigari, Lidia [Laboratory of Medical Physics and Expert Systems, Regina Elena National Cancer Institute, Rome (Italy)] [Laboratory of Medical Physics and Expert Systems, Regina Elena National Cancer Institute, Rome (Italy); Gomellini, Sara; Saracino, Biancamaria; Petrongari, Maria Grazia; Pinnaro, Paola; Pinzi, Valentina [Department of Radiation Oncology, Regina Elena National Cancer Institute, Rome (Italy)] [Department of Radiation Oncology, Regina Elena National Cancer Institute, Rome (Italy); Arcangeli, Giorgio, E-mail: arcangeli.gio@tiscali.it [Department of Radiation Oncology, Regina Elena National Cancer Institute, Rome (Italy)] [Department of Radiation Oncology, Regina Elena National Cancer Institute, Rome (Italy)

    2012-12-01T23:59:59.000Z

    Purpose: To report long-term results and patterns of failure after conventional and hypofractionated radiation therapy in high-risk prostate cancer. Methods and Materials: This randomized phase III trial compared conventional fractionation (80 Gy at 2 Gy per fraction in 8 weeks) vs hypofractionation (62 Gy at 3.1 Gy per fraction in 5 weeks) in combination with 9-month androgen deprivation therapy in 168 patients with high-risk prostate cancer. Freedom from biochemical failure (FFBF), freedom from local failure (FFLF), and freedom from distant failure (FFDF) were analyzed. Results: In a median follow-up of 70 months, biochemical failure (BF) occurred in 35 of the 168 patients (21%) in the study. Among these 35 patients, local failure (LF) only was detected in 11 (31%), distant failure (DF) only in 16 (46%), and both LF and DF in 6 (17%). In 2 patients (6%) BF has not yet been clinically detected. The risk reduction by hypofractionation was significant in BF (10.3%) but not in LF and DF. We found that hypofractionation, with respect to conventional fractionation, determined only an insignificant increase in the actuarial FFBF but no difference in FFLF and FFDF, when considering the entire group of patients. However, an increase in the 5-year rates in all 3 endpoints-FFBF, FFLF, and FFDF-was observed in the subgroup of patients with a pretreatment prostate-specific antigen (iPSA) level of 20 ng/mL or less. On multivariate analysis, the type of fractionation, iPSA level, Gleason score of 4+3 or higher, and T stage of 2c or higher have been confirmed as independent prognostic factors for BF. High iPSA levels and Gleason score of 4+3 or higher were also significantly associated with an increased risk of DF, whereas T stage of 2c or higher was the only independent variable for LF. Conclusion: Our results confirm the isoeffectiveness of the 2 fractionation schedules used in this study, although a benefit in favor of hypofractionation cannot be excluded in the subgroup of patients with an iPSA level of 20 ng/mL or less. The {alpha}/{beta} ratio might be more appropriately evaluated by FFLF than FFBF results, at least in high-risk disease.

  15. Realizing Health Reform’s Potential: Why a National High-Risk Insurance Pool Is Not a Workable Alternative to the Marketplace

    E-Print Network [OSTI]

    Hall, Jean P.

    2014-12-01T23:59:59.000Z

    and register to receive email alerts. Commonwealth Fund pub. 1792 Vol. 31 Why a National High-Risk Insurance Pool Is Not a Workable Alternative to the Marketplace Jean P. Hall Abstract The Pre-Existing Condition Insurance Plan (PCIP) was a national high-risk... to outline why national high-risk pools, which continue to be proposed as policy alternatives to ACA coverage expan- sions, are expensive to enrollees as well as their administrators and ultimately unsustainable. The key lesson—and the principle on which...

  16. Optimization of ferrous burden high temperature properties to meet blast furnace requirements in British Steel

    SciTech Connect (OSTI)

    Bergstrand, R.

    1996-12-31T23:59:59.000Z

    The high temperature properties of ferrous burden materials have long been an important consideration in the operation of British Steel blast furnaces. Previous research presented at this conference has shown that the behavior of materials in the lower stack and bosh can have a significant effect on furnace permeability and stability of operation. However, with increasing levels of hydrocarbon injection via the tuyeres, the reduction conditions inside British Steel blast furnaces have significantly altered over recent years. This paper focuses on the further work that has been undertaken to study the effect on ferrous burden high temperatures properties of the widely differing reduction regimes which can be experienced in today`s blast furnaces. The implications of the findings, and how they have been used in optimizing blast furnace operation and burden quality, are discussed.

  17. Analyzing the Radiation Properties of High-Z Impurities in High-Temperature Plasmas

    SciTech Connect (OSTI)

    Reinke, M. L.; Ince-Cushman, A.; Podpaly, Y.; Rice, J. E. [Plasma Science and Fusion Center, Cambridge, MA (United States); Bitter, M.; Hill, K. W. [Princeton Plasma Physics Laboratory, Princeton, NJ (United States); Fournier, K. B. [Lawrence Livermore National Laboratory, Livermore, CA (United States); Gu, M. F. [Space Science Laboratory, Berkeley, CA (United States)

    2009-09-10T23:59:59.000Z

    Most tokamak-based reactor concepts require the use of noble gases to form either a radiative mantle or divertor to reduce conductive heat exhaust to tolerable levels for plasma facing components. Predicting the power loss necessary from impurity radiation is done using electron temperature-dependent 'cooling-curves' derived from ab initio atomic physics models. We present here a technique to verify such modeling using highly radiative, argon infused discharges on Alcator C-Mod. A novel x-ray crystal imaging spectrometer is used to measure spatially resolved profiles of line-emissivity, constraining impurity transport simulations. Experimental data from soft x-ray diodes, bare AXUV diodes and foil bolometers are used to determine the local emissivity in three overlapping spectral bands, which are quantitatively compared to models. Comparison of broadband measurements show agreement between experiment and modeling in the core, but not over the entire profile, with the differences likely due to errors in the assumed radial impurity transport outside of the core. Comparison of Ar{sup 16+} x-ray line emission modeling to measurements suggests an additional problem with the collisional-radiative modeling of that charge state.

  18. High temperature thermoelectric properties of Czochralski-pulled Ba8Ga16Ge30 M. Christensen1

    E-Print Network [OSTI]

    High temperature thermoelectric properties of Czochralski-pulled Ba8Ga16Ge30 M. Christensen1 , G, Pasadena, California 91125 Abstract High temperature thermoelectric properties have been measured/m-K around 900K, and ZT reaches a maximum of 0.9 at 1000 K. Introduction The interest in thermoelectric

  19. High Cloud Properties from Three Years of MODIS Terra and Aqua Collection-4 Data over the Tropics

    E-Print Network [OSTI]

    Baum, Bryan A.

    High Cloud Properties from Three Years of MODIS Terra and Aqua Collection-4 Data over the Tropics) ABSTRACT This study surveys the optical and microphysical properties of high (ice) clouds over the Tropics on the gridded level-3 cloud products derived from the measurements acquired by the Moderate Resolution Imaging

  20. Development of high performance refractory fibers with enhanced insulating properties and longer service lifetimes

    SciTech Connect (OSTI)

    Martin, P.C.; DePoorter, G.L.; Munoz, D.R.

    1991-02-01T23:59:59.000Z

    We have initiated a three phase investigation of the development of high performance refractory fibers with enhanced insulating properties and longer usable lifetimes. This report presents the results of the first phase of the study, performed from Aug. 1989 through Feb. 1991, which shows that significant energy saving are possible through the use of high temperature insulating fibers that better retain their efficient insulating properties during the service lifetime of the fibers. The remaining phases of this program include the pilot scale development and then full scale production feasibility development and evaluation of enhanced high temperature refractory insulting fibers. This first proof of principle phase of the program presents a summary of the current use patterns of refractory fibers, a laboratory evaluation of the high temperature performance characteristics of selected typical refractory fibers and an analysis of the potential energy savings through the use of enhanced refractory fibers. The current use patterns of refractory fibers span a wide range of industries and high temperature furnaces within those industries. The majority of high temperature fiber applications are in furnaces operating between 2000 and 26000{degrees}F. The fibers used in furnaces operating within this range provide attractive thermal resistance and low thermal storage at reasonable cost. A series of heat treatment studies performed for this phase of the program has shown that the refractory fibers, as initially manufactured, have attractive thermal conductivities for high temperature applications but the fibers go through rapid devitrification and subsequent crystal growth upon high temperature exposure. Development of improved fibers, maintaining the favorable characteristics of the existing as-manufactured fibers, could save between 1 and 4% of the energy consumed in high temperature furnaces using refractory fibers.

  1. Risk Level Based Management System: a control banding model for occupational health and safety risk management in a highly regulated environment

    SciTech Connect (OSTI)

    Zalk, D; Kamerzell, R; Paik, S; Kapp, J; Harrington, D; Swuste, P

    2009-05-27T23:59:59.000Z

    The Risk Level Based Management System (RLBMS) is an occupational risk management (ORM) model that focuses occupational safety, hygeiene, and health (OSHH) resources on the highest risk procedures at work. This article demonstrates the model's simplicity through an implementation within a heavily regulated research institution. The model utilizes control banding strategies with a stratification of four risk levels (RLs) for many commonly performed maintenance and support activities, characterizing risk consistently for comparable tasks. RLBMS creates an auditable tracking of activities, maximizes OSHH professional field time, and standardizes documentation and control commensurate to a given task's RL. Validation of RLs and their exposure control effectiveness is collected in a traditional quantitative collection regime for regulatory auditing. However, qualitative risk assessment methods are also used within this validation process. Participatory approaches are used throughout the RLBMS process. Workers are involved in all phases of building, maintaining, and improving this model. This work participation also improves the implementation of established controls.

  2. Physical and magnetic properties of highly aluminum doped strontium ferrite nanoparticles prepared by auto-combustion route

    E-Print Network [OSTI]

    Liu, J. Ping

    Physical and magnetic properties of highly aluminum doped strontium ferrite nanoparticles prepared-Hexaferrite Al doped Sr-Ferrite High Coercivity Ferrite a b s t r a c t Highly Al3þ ion doped nanocrystalline Sr microscope show growth of needle shaped ferrites with high aspect ratio at Al3þ ion content exceeding xZ2. Al

  3. Historical Disability Outcomes of Enrollees in the Kansas High Risk Pool: A White Paper presented to CMS by the Kansas DMIE Project January, 2006

    E-Print Network [OSTI]

    Hall, Jean P.; Moore, Janice M.

    2006-01-01T23:59:59.000Z

    This white paper reports the historical rates of disability outcomes (e.g., transition to Social Security disability status) for people enrolled in Kansas' state high-risk health insurance pool.

  4. Selling sex in unsafe spaces: Sex work risk environments in Phnom Penh, Cambodia

    E-Print Network [OSTI]

    2011-01-01T23:59:59.000Z

    practices Risk environment * 6 (Medium) 10 (High) 11 (High)medium risk, entertainment venues represent a high risk environment

  5. Causes of Mortality After Dose-Escalated Radiation Therapy and Androgen Deprivation for High-Risk Prostate Cancer

    SciTech Connect (OSTI)

    Tendulkar, Rahul D., E-mail: tendulr@ccf.org [Department of Radiation Oncology, Taussig Cancer Institute, Cleveland Clinic, Cleveland, Ohio (United States); Hunter, Grant K. [Department of Radiation Oncology, Intermountain Healthcare, Salt Lake City, Utah (United States); Reddy, Chandana A.; Stephans, Kevin L.; Ciezki, Jay P.; Abdel-Wahab, May [Department of Radiation Oncology, Taussig Cancer Institute, Cleveland Clinic, Cleveland, Ohio (United States); Stephenson, Andrew J.; Klein, Eric A. [Department of Urology, Glickman Urological Institute, Cleveland Clinic, Cleveland, Ohio (United States); Mahadevan, Arul [Seacoast Cancer Center New Hampshire, Dover, New Hampshire (United States); Kupelian, Patrick A. [Department of Radiation Oncology, University of California Los Angeles Health System, Los Angeles, California (United States)

    2013-09-01T23:59:59.000Z

    Purpose: Men with high-risk prostate cancer have other competing causes of mortality; however, current risk stratification schema do not account for comorbidities. We aim to identify the causes of death and factors predictive for mortality in this population. Methods and Materials: A total of 660 patients with high-risk prostate cancer were treated with definitive high-dose external beam radiation therapy (?74 Gy) and androgen deprivation (AD) between 1996 and 2009 at a single institution. Cox proportional hazards regression analysis was conducted to determine factors predictive of survival. Results: The median radiation dose was 78 Gy, median duration of AD was 6 months, and median follow-up was 74 months. The 10-year overall survival (OS) was 60.6%. Prostate cancer was the leading single cause of death, with 10-year mortality of 14.1% (95% CI 10.7-17.6), compared with other cancers (8.4%, 95% CI 5.7-11.1), cardiovascular disease (7.3%, 95% CI 4.7-9.9), and all other causes (10.4%, 95% CI 7.2-13.6). On multivariate analysis, older age (HR 1.55, P=.002) and Charlson comorbidity index score (CS) ?1 (HR 2.20, P<.0001) were significant factors predictive of OS, whereas Gleason score, T stage, prostate-specific antigen, duration of AD, radiation dose, smoking history, and body mass index were not. Men younger than 70 years of age with CS = 0 were more likely to die of prostate cancer than any other cause, whereas older men or those with CS ?1 more commonly suffered non-prostate cancer death. The cumulative incidences of prostate cancer-specific mortality were similar regardless of age or comorbidities (P=.60). Conclusions: Men with high-risk prostate cancer are more likely to die of causes other than prostate cancer, except for the subgroup of men younger than 70 years of age without comorbidities. Only older age and presence of comorbidities significantly predicted for OS, whereas prostate cancer- and treatment-related factors did not.

  6. Improved Survival Endpoints With Adjuvant Radiation Treatment in Patients With High-Risk Early-Stage Endometrial Carcinoma

    SciTech Connect (OSTI)

    Elshaikh, Mohamed A., E-mail: melshai1@hfhs.org [Department of Radiation Oncology, Henry Ford Hospital, Detroit, Michigan (United States); Vance, Sean; Suri, Jaipreet S. [Department of Radiation Oncology, Henry Ford Hospital, Detroit, Michigan (United States); Mahan, Meredith [Public Health Science, Henry Ford Hospital, Detroit, Michigan (United States); Munkarah, Adnan [Division of Gynecologic Oncology, Department of Women's Health Services, Henry Ford Hospital, Detroit, Michigan (United States)

    2014-02-01T23:59:59.000Z

    Purpose/Objective(s): To determine the impact of adjuvant radiation treatment (RT) on recurrence-free survival (RFS), disease-specific survival (DSS), and overall survival (OS) in patients with high-risk 2009 International Federation of Gynecology and Obstetrics stage I-II endometrial carcinoma. Methods and Materials: We identified 382 patients with high-risk EC who underwent hysterectomy. RFS, DSS, and OS were calculated from the date of hysterectomy by use of the Kaplan-Meier method. Cox regression modeling was used to explore the risks associated with various factors on survival endpoints. Results: The median follow-up time for the study cohort was 5.4 years. The median age was 71 years. All patients underwent hysterectomy and salpingo-oophorectomy, 93% had peritoneal cytology, and 85% underwent lymphadenectomy. Patients with endometrioid histology constituted 72% of the study cohort, serous in 16%, clear cell in 7%, and mixed histology in 4%. Twenty-three percent of patients had stage II disease. Adjuvant management included RT alone in 220 patients (57%), chemotherapy alone in 25 patients (7%), and chemoradiation therapy in 27 patients (7%); 110 patients (29%) were treated with close surveillance. The 5-year RFS, DSS, and OS were 76%, 88%, and 73%, respectively. On multivariate analysis, adjuvant RT was a significant predictor of RFS (P<.001) DSS (P<.001), and OS (P=.017). Lymphovascular space involvement was a significant predictor of RFS and DSS (P<.001). High tumor grade was a significant predictor for RFS (P=.038) and DSS (P=.025). Involvement of the lower uterine segment was also a predictor of RFS (P=.049). Age at diagnosis and lymphovascular space involvement were significant predictors of OS: P<.001 and P=.002, respectively. Conclusion: In the treatment of patients with high-risk features, our study suggests that adjuvant RT significantly improves recurrence-free, disease-specific, and overall survival in patients with early-stage endometrial carcinoma. Furthermore, adjuvant RT is an independent predictor for RFS, DSS, and OS in this group of patients. These findings need validation from a prospective randomized study.

  7. Neutrino properties deduced from the study of lepton number violating processes at low and high energies

    SciTech Connect (OSTI)

    Stoica, Sabin [Horia Hulubei Foundation, P.O. Box MG-12, 077125 Magurele-Bucharest (Romania) and Horia Hulubei National Institute for Physics and Nuclear Engineering, P.O. Box MG-6, Magurele-Bucharest 077125 (Romania)

    2012-11-20T23:59:59.000Z

    There is nowadays a significant progress in understanding the neutrino properties. The results of the neutrino oscillation experiments have convincingly showed that neutrinos have mass and oscillate, in contradiction with the Standard Model (SM) assumptions, and these are the first evidences of beyond SM physics. However, fundamental properties of the neutrinos like their absolute mass, their character (are they Dirac or Majorana particles?), their mass hierarchy, the number of neutrino flavors, etc., still remain unknown. In this context there is an increased interest in the study of the lepton number violating (LNV) processes, since they could complete our understanding on the neutrino properties. Since recently, the neutrinoless double beta decay was considered the only process able to distinguish between Dirac or Majorana neutrinos and to give a hint on the absolute mass of the electron neutrino. At present, the increased luminosity of the LHC experiments makes feasible the search of LNV processes at high energy as well. In this lecture I will make a brief review on our present knowledge of the neutrino properties, on the present status of the double-beta decay studies and on the first attempts to search LNV processes at LHC.

  8. Revisit of the relationship between the elastic properties and sound velocities at high pressures

    SciTech Connect (OSTI)

    Wang, Chenju; Yan, Xiaozhen [National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, PO Box 919-102, Mianyang, Sichuan 621900 (China); Institute of Atomic and Molecular Sciences, Sichuan University, Chengdu 610065 (China); Xiang, Shikai, E-mail: skxiang@caep.ac.cn; Chen, Haiyan [National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, PO Box 919-102, Mianyang, Sichuan 621900 (China); Gu, Jianbing; Yu, Yin [National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, PO Box 919-102, Mianyang, Sichuan 621900 (China); College of Physical Science and Technology, Sichuan University, Chengdu 610064 (China); Kuang, Xiaoyu [Institute of Atomic and Molecular Sciences, Sichuan University, Chengdu 610065 (China); International Centre for Materials Physics, Academia Sinica, Shenyang 110016 (China)

    2014-09-14T23:59:59.000Z

    The second-order elastic constants and stress-strain coefficients are defined, respectively, as the second derivatives of the total energy and the first derivative of the stress with respect to strain. Since the Lagrangian and infinitesimal strain are commonly used in the two definitions above, the second-order elastic constants and stress-strain coefficients are separated into two categories, respectively. In general, any of the four physical quantities is employed to characterize the elastic properties of materials without differentiation. Nevertheless, differences may exist among them at non-zero pressures, especially high pressures. Having explored the confusing issue systemically in the present work, we find that the four quantities are indeed different from each other at high pressures and these differences depend on the initial stress applied on materials. Moreover, the various relations between the four quantities depicting elastic properties of materials and high-pressure sound velocities are also derived from the elastic wave equations. As examples, we calculated the high-pressure sound velocities of cubic tantalum and hexagonal rhenium using these nexus. The excellent agreement of our results with available experimental data suggests the general applicability of the relations.

  9. Irradiation of commercial, high-Tc superconducting tape for potential fusion applications: electromagnetic transport properties

    SciTech Connect (OSTI)

    Aytug, Tolga [ORNL; Gapud, Albert A. [University of South Alabama, Mobile; List III, Frederick Alyious [ORNL; Leonard, Keith J [ORNL; Rupich, Marty [American Superconductor Corporation, Westborough, MA; Zhang, Yanwen [ORNL; Greenwood, N T [University of South Alabama, Mobile; Alexander, J A [University of South Alabama, Mobile; Khan, A [University of South Alabama, Mobile

    2015-01-01T23:59:59.000Z

    Effects of low dose irradiation on the electrical transport current properties of commercially available high-temperature superconducting, coated-conductor tapes were investigated, in view of potential applications in the irradiative environment of fusion reactors. Three different tapes, each with unique as-grown flux-pinning structures, were irradiated with Au and Ni ions at energies that provide a range of damage effects, with accumulated damage levels near that expected for conductors in a fusion reactor environment. Measurements using transport current determined the pre- and post-irradiation resistivity, critical current density, and pinning force density, yielding critical temperatures, irreversibility lines, and inferred vortex creep rates. Results show that at the irradiation damage levels tested, any detriment to as-grown pre-irradiation properties is modest; indeed in one case already-superior pinning forces are enhanced, leading to higher critical currents.

  10. Redefining High-Risk Prostate Cancer Based on Distant Metastases and Mortality After High-Dose Radiotherapy With Androgen Deprivation Therapy

    SciTech Connect (OSTI)

    Tendulkar, Rahul D., E-mail: tendulr@ccf.org [Department of Radiation Oncology, Taussig Cancer Institute, Cleveland Clinic, Cleveland, Ohio (United States); Reddy, Chandana A.; Stephans, Kevin L.; Ciezki, Jay P. [Department of Radiation Oncology, Taussig Cancer Institute, Cleveland Clinic, Cleveland, Ohio (United States); Klein, Eric A. [Department of Urology, Glickman Urological Institute, Cleveland Clinic, Cleveland, Ohio (United States); Mahadevan, Arul [Seacoast Cancer Center New Hampshire, Dover, New Hampshire (United States); Kupelian, Patrick A. [Department of Radiation Oncology, University of California Los Angeles Health System, Los Angeles, California (United States)

    2012-03-15T23:59:59.000Z

    Purpose: Modern outcomes of high-dose external beam radiotherapy (EBRT) with androgen deprivation therapy (ADT) for high-risk (HR) prostate cancer are not well described. Methods and Materials: We identified 585 patients who met HR criteria by 2010 National Comprehensive Cancer Network guidelines, who were treated with EBRT consisting of {>=}74 Gy from 1996 to 2008 at Cleveland Clinic, of whom 95% received ADT. We analyzed biochemical relapse-free survival (bRFS), distant metastases-free survival (DMFS), and prostate cancer-specific mortality (PCSM). Results: The median EBRT dose was 78 Gy, and median ADT duration was 6 months. At 10 years, the bRFS was 50.2%, the DMFS was 71.6%, and the PCSM was 14.4%. On multivariate analysis, significant predictors of bRFS were biopsy Gleason score (bGS) of 8 to 10, stage T3, and prostate-specific antigen (PSA) concentration; predictors of DMFS were bGS of 8 to 10 and stage T3; the only predictor of PCSM was bGS of 8 to 10. The duration of ADT was not predictive of any endpoint. We identified an unfavorable high-risk (UHR) group of stage T1-T2 tumors consisting of bGS of 8 with PSA of >10 ng/ml or bGS of 9 to 10 with any PSA level; the remaining clinically localized cancers comprised the favorable high-risk (FHR) group. Comparing FHR, UHR, and stage T3 groups, the DMFS rates were 81.4%, 57.8%, and 59.1% (p < 0.0001), and the PCSM rates were 7.5%, 28.4%, and 20.6% at 10 years, respectively (p = 0.006). Conclusion: A bGS of 8 to 10 is the strongest predictor of bRFS, DMFS, and PCSM after high-dose EBRT with ADT. The duration of ADT did not correlate with outcome. Future studies should account for the heterogeneity in HR prostate cancer.

  11. High-Oleic Ground Beef and Risk Factors for Cardiovascular Disease in Men and Postmenopausal Women 

    E-Print Network [OSTI]

    Ghahramany, Ghazal

    2012-07-16T23:59:59.000Z

    total plasma cholesterol, triacylglycerol, and very low density lipoprotein (VLDL) cholesterol. Plasma concentrations of high density lipoprotein (HDL) cholesterol and low density lipoprotein (LDL) cholesterol decreased and increased, respectively...

  12. Risk-informing decisions about high-level nuclear waste repositories

    E-Print Network [OSTI]

    Ghosh, Suchandra Tina, 1973-

    2004-01-01T23:59:59.000Z

    Performance assessments (PAs) are important sources of information for societal decisions in high-level radioactive waste (HLW) management, particularly in evaluating safety cases for proposed HLW repository development. ...

  13. Comparison of high and low intensity contact between secondary and primary care to detect people at ultra-high risk for psychosis: study protocol for a theory-based, cluster randomized controlled trial

    E-Print Network [OSTI]

    Perez, Jesus; Russo, Debra A; Stochl, Jan; Byford, Sarah; Zimbron, Jorge; Graffy, Jonathan P; Painter, Michelle; Croudace, Tim J; Jones, Peter B

    2013-07-17T23:59:59.000Z

    Abstract Background The early detection and referral to specialized services of young people at ultra-high risk (UHR) for psychosis may reduce the duration of untreated psychosis and, therefore, improve prognosis. General practitioners (GPs...

  14. Ground state properties and high pressure behavior of plutonium dioxide: Systematic density functional calculations

    E-Print Network [OSTI]

    Zhang, Ping; Zhao, Xian-Geng

    2010-01-01T23:59:59.000Z

    Plutonium dioxide is of high technological importance in nuclear fuel cycle and is particularly crucial in long-term storage of Pu-based radioactive waste. Using first-principles density-functional theory, in this paper we systematically study the structural, electronic, mechanical, thermodynamic properties, and pressure induced structural transition of PuO$_{2}$. To properly describe the strong correlation in the Pu $5f$ electrons, the local density approximation$+U$ and the generalized gradient approximation$+U$ theoretical formalisms have been employed. We optimize the $U$ parameter in calculating the total energy, lattice parameters, and bulk modulus at the nonmagnetic, ferromagnetic, and antiferromagnetic configurations for both ground state fluorite structure and high pressure cotunnite structure. The best agreement with experiments is obtained by tuning the effective Hubbard parameter $U$ at around 4 eV within the LDA$+U$ approach. After carefully testing the validity of the ground state, we further in...

  15. High-Energy, Low-Frequency Risk to the North American Bulk Power System

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the.pdfBreaking of Blythe Solar Power ProjectHawai'iPresentedHighHighBOPDaylighting(June

  16. High-temperature, structural disorder, phase transitions, and piezoelectric properties of GaPO{sub 4}

    SciTech Connect (OSTI)

    Haines, J.; Cambon, O.; Prudhomme, N.; Fraysse, G.; Keen, D. A.; Chapon, L. C.; Tucker, M. G. [Laboratoire de Physico-Chimie de la Matiere Condensee, UMR CNRS 5617, Universite Montpellier II, Place Eugene Bataillon, cc003, 34095 Montpellier cedex 5 (France); Department of Physics, Oxford University, Clarendon Laboratory, Parks Road, Oxford OX1 3PU (United Kingdom); and ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11 0QX (United Kingdom); ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11 0QX (United Kingdom); Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge CB2 3EQ (United Kingdom)

    2006-01-01T23:59:59.000Z

    Gallium orthophosphate was studied at high temperature up to 1303 K by total neutron scattering and 1173 K by piezoelectric measurements. Rietveld refinements at 1223 K confirm the stability of the structural distortion in the {alpha}-quartz-type phase with an average tilt angle {delta}=18.8 deg. at this temperature. In contrast, reverse Monte Carlo (RMC) refinements of total neutron scattering data indicate that, whereas the degree of structural disorder initially slowly varies over a very large temperature interval in the {alpha}-quartz-type phase, an increase in disorder is observed beginning above 1023 K. Piezoelectric measurements indicate that the quality factor (Q) of GaPO{sub 4} resonators remains stable up to this temperature above which the piezoelectric properties of the material degrade. This degradation can be correlated to the increase in structural disorder. RMC refinements indicate that the high-temperature {beta}-cristobalite-type phase at 1303 K is characterized by significant thermally induced disorder with oxygen atom density forming a continuous ring around the vector joining neighboring gallium and phosphorous atoms. Gallium phosphate may be expected to retain its piezoelectric properties up to within 200 K of the phase transition temperature and as a consequence be used in applications at temperatures slightly above 1000 K.

  17. Ultrasonic properties of low solvus high refractory (LSHR) super alloy disk material

    SciTech Connect (OSTI)

    Na, Jeong K. [University of Dayton Research Institute, 300 College Park, Dayton, OH 45469 (United States); Blodgett, Mark [Air Force Research Laboratory (AFRL/RXLP) Wright-Patterson AFB, OH 45433 (United States)

    2011-06-23T23:59:59.000Z

    Measurements are made for ultrasonic linear and nonlinear properties of the powder metallurgy disk alloy LSHR material designed with a relatively low {gamma}' precipitate solvus temperature and high refractory element content. This allows versatile heat treatment processing which results in high tensile, creep and fatigue properties depending on the grain size controlled through proper selection of solution heat treatment temperatures relative to the {gamma}' precipitate solvus temperature. Sound velocity and attenuation for both longitudinal and shear modes at various frequencies from 5 to 20 MHz help to identify and quantify the size of transition zone nondestructively between the small grain ({approx}10 {mu}m) and the large grain ({approx}100 {mu}m) zones. The shear wave velocity measurements taken by aligning the transducer polarization direction parallel and perpendicular to the grain transition direction reveal some results that we do not fully understand at this time and will be the basis of future research. Similarly, measurements of the acoustic nonlinearity parameter show some variations that may originate from uncertain sources.

  18. Comparison of risk for pre- and post-remediation of uranium mill tailings from vicinity properties in Monticello, Utah

    SciTech Connect (OSTI)

    Espegren, M.L.; Pierce, G.A.; Halford, D.K. [Oak Ridge National Laboratory, TN (United States)

    1996-04-01T23:59:59.000Z

    Pre- and post-remedial action dose rates were calculated on 101 Monticello, Utah, properties included in the Monticello Vicinity Property Remedial Action Project. Dose rates were calculated using the RESRAD computer code, which indicated that 98% of the effective dose equivalent was contributed by external gamma radiation and radon emanation. Radium concentrations in pCig{sup {minus}1} were averaged for pre- and post-remedial action measurements: point sources were not included in the averages. The volume of the deposit was also used in the dose calculation. In all cases the dose was reduced, and at 77 properties the dose was reduced to 0.30 mSv y{sup {minus}1} (Department of Energy ALARA recommendation). A paired t-test showed a significant reduction (p < 0.05) between the pre- and post-remedial action dose rates. The average cost of remedial action, number of persons per household, number of properties remediated, and the reduction of cancer mortalities through remediation resulted in an approximate cost of $11,000,000 per life saved by remediation of mill tailings. 13 refs., 2 tabs.

  19. Whole-Pelvic Nodal Radiation Therapy in the Context of Hypofractionation for High-Risk Prostate Cancer Patients: A Step Forward

    SciTech Connect (OSTI)

    Kaidar-Person, Orit [Division of Oncology, Rambam Health Care Campus, Haifa (Israel)] [Division of Oncology, Rambam Health Care Campus, Haifa (Israel); Roach, Mack [Department of Radiation Oncology, University of California, San Francisco, San Francisco, California (United States)] [Department of Radiation Oncology, University of California, San Francisco, San Francisco, California (United States); Créhange, Gilles, E-mail: gcrehange@cgfl.fr [Department of Radiation Oncology, Georges-François Leclerc Cancer Center, Dijon (France)] [Department of Radiation Oncology, Georges-François Leclerc Cancer Center, Dijon (France)

    2013-07-15T23:59:59.000Z

    Given the low ?/? ratio of prostate cancer, prostate hypofractionation has been tested through numerous clinical studies. There is a growing body of literature suggesting that with high conformal radiation therapy and even with more sophisticated radiation techniques, such as high-dose-rate brachytherapy or image-guided intensity modulated radiation therapy, morbidity associated with shortening overall treatment time with higher doses per fraction remains low when compared with protracted conventional radiation therapy to the prostate only. In high-risk prostate cancer patients, there is accumulating evidence that either dose escalation to the prostate or hypofractionation may improve outcome. Nevertheless, selected patients who have a high risk of lymph node involvement may benefit from whole-pelvic radiation therapy (WPRT). Although combining WPRT with hypofractionated prostate radiation therapy is feasible, it remains investigational. By combining modern advances in radiation oncology (high-dose-rate prostate brachytherapy, intensity modulated radiation therapy with an improved image guidance for soft-tissue sparing), it is hypothesized that WPRT could take advantage of recent results from hypofractionation trials. Moreover, the results from hypofractionation trials raise questions as to whether hypofractionation to pelvic lymph nodes with a high risk of occult involvement might improve the outcomes in WPRT. Although investigational, this review discusses the challenging idea of WPRT in the context of hypofractionation for patients with high-risk prostate cancer.

  20. General Properties on Applying the Principle of Minimum Sensitivity to High-order Perturbative QCD Predictions

    E-Print Network [OSTI]

    Yang Ma; Xing-Gang Wu; Hong-Hao Ma; Hua-Yong Han

    2015-03-17T23:59:59.000Z

    As one of the key components of perturbative QCD theory, it is helpful to find a systematic and reliable way to set the renormalization scale for a high-energy process. The conventional treatment is to take a typical momentum as the renormalization scale, which assigns an arbitrary range and an arbitrary systematic error to pQCD predictions, leading to the well-known renormalization scheme and scale ambiguities. As a practical solution for such scale setting problem, the "Principle of Minimum Sensitivity" (PMS), has been proposed in the literature. The PMS suggests to determine an optimal scale for the pQCD approximant of an observable by requiring its slope over the scheme and scale changes to vanish. In the paper, we present a detailed discussion on general properties of PMS by utilizing three quantities $R_{e^+e^-}$, $R_\\tau$ and $\\Gamma(H\\rightarrow b\\bar{b})$ up to four-loop QCD corrections. After applying the PMS, the accuracy of pQCD prediction, the pQCD convergence, the pQCD predictive power and etc., have been discussed. Furthermore, we compare PMS with another fundamental scale setting approach, i.e. the Principle of Maximum Conformality (PMC)... Our results show that PMS does provide a practical way to set the effective scale for high-energy process, and the PMS prediction agrees with the PMC one by including enough high-order QCD corrections, both of which shall be more accurate than the prediction under the conventional scale setting. However, the PMS pQCD convergence is an accidental, which usually fails to achieve a correct prediction of unknown high-order contributions with next-to-leading order QCD correction only, i.e. it is always far from the "true" values predicted by including more high-order contributions.

  1. Modeling of fission product release from HTR (high temperature reactor) fuel for risk analyses

    SciTech Connect (OSTI)

    Bolin, J.; Verfondern, K.; Dunn, T.; Kania, M.

    1989-07-01T23:59:59.000Z

    The US and FRG have developed methodologies to determine the performance of and fission product release from TRISO-coated fuel particles under postulated accident conditions. The paper presents a qualitative and quantitative comparison of US and FRG models. The models are those used by General Atomics (GA) and by the German Nuclear Research Center at Juelich (KFA/ISF). A benchmark calculation was performed for fuel temperatures predicted for the US Department of Energy sponsored Modular High Temperature Gas Cooled Reactor (MHTGR). Good agreement in the benchmark calculations supports the on-going efforts to verify and validate the independently developed codes of GA and KFA/ISF. This work was performed under the US/FRG Umbrella Agreement for Cooperation on Gas Cooled Reactor Development. 6 refs., 3 figs., 3 tabs.

  2. The UV, Lyman-alpha, and dark matter halo properties of high redshift galaxies

    E-Print Network [OSTI]

    Garel, T; Guiderdoni, B; Michel-Dansac, L; Hayes, M; Verhamme, A

    2015-01-01T23:59:59.000Z

    We explore the properties of high-redshift Lyman-alpha emitters (LAE), and their link with the Lyman-Break galaxy population (LBG), using a semi-analytic model of galaxy formation that takes into account resonant scattering of Lya photons in gas outflows. We can reasonably reproduce the abundances of LAEs and LBGs from redshift 3 to 7, as well as most UV LFs of LAEs. The stronger dust attenuation for (resonant) Lya photons compared to UV continuum photons in bright LBGs provides a natural interpretation to the increase of the LAE fraction in LBG samples, X_LAE, towards fainter magnitudes. The redshift evolution of X_LAE seems however very sensitive to UV magnitudes limits and EW cuts. In spite of the apparent good match between the statistical properties predicted by the model and the observations, we find that the tail of the Lya equivalent width distribution (EW > 100 A) cannot be explained by our model, and we need to invoke additional mechanisms. We find that LAEs and LBGs span a very similar dynamical ra...

  3. STORAGE, NUTRITIONAL AND SENSORY PROPERTIES OF HIGH-FAT FISH AND RICE FLOUR COEXTRUDATES

    SciTech Connect (OSTI)

    Jaya Shankar Tumuluru; Shahab Sokhansanj; Sukumar Bandyopadhyay; Amarender Singh Bawa

    2013-10-01T23:59:59.000Z

    The present research is on understanding the storage, nutritional and sensory characteristics of high-fat fish (khoira) and rice flour coextrudates at storage temperature of 30C. The extruder processing conditions used are barrel temperature (200C), screw speed (109 rpm), fish content of feed (44%) and feed moisture content (39%). Sorption isotherm data indicated that the safe aw level was about 0.4–0.7. Guggenheim -Anderson -de Boer model described the sorption data adequately with an r2 value of 0.99. During the initial 15 days of storage, there was a loss of vitamin A and total tocopherols by 64.4 and 20.6%, and an increase in peroxides and free fatty acid content by about 116 mg/kg and 21.7%. The nonlinear mathematical model developed has adequately described the changes in nutritional and storage properties. Sensory attributes indicated that the product fried for 15 s was most acceptable.

  4. Optical properties of ITO films obtained by high-frequency magnetron sputtering with accompanying ion treatment

    SciTech Connect (OSTI)

    Krylov, P. N., E-mail: ftt@uni.udm.ru; Zakirova, R. M.; Fedotova, I. V. [Udmurt State University (Russian Federation)] [Udmurt State University (Russian Federation)

    2013-10-15T23:59:59.000Z

    A variation in the properties of indium-tin-oxide (ITO) films obtained by the method of reactive magnetron sputtering with simultaneous ion treatment is reported. The ITO films feature the following parameters in the optical range of 450-1100 nm: a transmission coefficient of 80%, band gap of 3.50-3.60 eV, and a refractive index of 1.97-2.06. All characteristics of the films depend on the ion-treatment current. The latter, during the course of deposition, reduces the resistivity of the ITO films with the smallest value of the resistivity being equal to 2 Multiplication-Sign 10{sup -3} {Omega} cm. The degradation of films with a high resistivity when kept in air is observed.

  5. Non-Invasive Diagnostics for Measuring Physical Properties and Processes in High Level Wastes

    SciTech Connect (OSTI)

    Robert Powell; David Pfund

    2005-07-17T23:59:59.000Z

    This research demonstrated the usefulness of tomographic techniques for determining the physical properties of slurry suspensions. Of particular interest was the measurement of the viscosity of suspensions in complex liquids and modeling these. We undertook a long rage program that used two techniques, magnetic resonance imaging and ultrasonic pulsed Doppler velocimetry. Our laboratory originally developed both of these for the measurement of viscosity of complex liquids and suspensions. We have shown that the relationship between shear viscosity and shear rate can be determined over a wide range of shear rates from a single measurement. We have also demonstrated these techniques for many non-Newtonian fluids which demonstrate highly shear thinning behavior. This technique was extended to determine the yield stress with systems of interacting particles. To model complex slurries that may be found in wastes applications, we have also used complex slurries that are found in industrial applications

  6. Ultra-High Performance Concrete with Tailored Properties Cementitious materials comprise a large portion of domestic structures and

    E-Print Network [OSTI]

    Li, Mo

    Ultra-High Performance Concrete with Tailored Properties Cementitious materials comprise a large portion of domestic structures and infrastructure. The development of ultra-high performance concrete of buildings or structures to dynamic loading and fire. Overview of research program on UHPC or CEP (concrete

  7. Far-infrared properties of superconducting YBa2Cu3O7-d films in high magnetic fields

    E-Print Network [OSTI]

    Tanner, David B.

    Far-infrared properties of superconducting YBa2Cu3O7-d films in high magnetic fields H.L. Liua,*, A of Physics, University of Florida, Gainesville, FL 32611, USA b National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL 32306, USA c Jet Propulsion Laboratory, California Institute

  8. Characterizing Aerosol Distributions and Optical Properties Using the NASA Langley High Spectral Resolution Lidar

    SciTech Connect (OSTI)

    Hostetler, Chris; Ferrare, Richard

    2013-02-14T23:59:59.000Z

    The objective of this project was to provide vertically and horizontally resolved data on aerosol optical properties to assess and ultimately improve how models represent these aerosol properties and their impacts on atmospheric radiation. The approach was to deploy the NASA Langley Airborne High Spectral Resolution Lidar (HSRL) and other synergistic remote sensors on DOE Atmospheric Science Research (ASR) sponsored airborne field campaigns and synergistic field campaigns sponsored by other agencies to remotely measure aerosol backscattering, extinction, and optical thickness profiles. Synergistic sensors included a nadir-viewing digital camera for context imagery, and, later in the project, the NASA Goddard Institute for Space Studies (GISS) Research Scanning Polarimeter (RSP). The information from the remote sensing instruments was used to map the horizontal and vertical distribution of aerosol properties and type. The retrieved lidar parameters include profiles of aerosol extinction, backscatter, depolarization, and optical depth. Products produced in subsequent analyses included aerosol mixed layer height, aerosol type, and the partition of aerosol optical depth by type. The lidar products provided vertical context for in situ and remote sensing measurements from other airborne and ground-based platforms employed in the field campaigns and was used to assess the predictions of transport models. Also, the measurements provide a data base for future evaluation of techniques to combine active (lidar) and passive (polarimeter) measurements in advanced retrieval schemes to remotely characterize aerosol microphysical properties. The project was initiated as a 3-year project starting 1 January 2005. It was later awarded continuation funding for another 3 years (i.e., through 31 December 2010) followed by a 1-year no-cost extension (through 31 December 2011). This project supported logistical and flight costs of the NASA sensors on a dedicated aircraft, the subsequent analysis and archival of the data, and the presentation of results in conferences, workshops, and publications. DOE ASR field campaigns supported under this project included - MAX-Mex /MILAGRO (2006) - TexAQS 2006/GoMACCS (2006) - CHAPS (2007) - RACORO (2009) - CARE/CalNex (2010) In addition, data acquired on HSRL airborne field campaigns sponsored by other agencies were used extensively to fulfill the science objectives of this project and the data acquired have been made available to other DOE ASR investigators upon request.

  9. High pressure elastic properties of minerals from ab initio simulations: The case of pyrope, grossular and andradite silicate garnets

    SciTech Connect (OSTI)

    Erba, A., E-mail: alessandro.erba@unito.it; Mahmoud, A.; Dovesi, R. [Dipartimento di Chimica and Centre of Excellence NIS (Nanostructured Interfaces and Surfaces), Università di Torino, via Giuria 5, IT-10125 Torino (Italy)] [Dipartimento di Chimica and Centre of Excellence NIS (Nanostructured Interfaces and Surfaces), Università di Torino, via Giuria 5, IT-10125 Torino (Italy); Belmonte, D. [DISTAV, Università di Genova, Corso Europa 26, 16132 Genoa (Italy)] [DISTAV, Università di Genova, Corso Europa 26, 16132 Genoa (Italy)

    2014-03-28T23:59:59.000Z

    A computational strategy is devised for the accurate ab initio simulation of elastic properties of crystalline materials under pressure. The proposed scheme, based on the evaluation of the analytical stress tensor and on the automated computation of pressure-dependent elastic stiffness constants, is implemented in the CRYSTAL solid state quantum-chemical program. Elastic constants and related properties (bulk, shear and Young moduli, directional seismic wave velocities, elastic anisotropy index, Poisson's ratio, etc.) can be computed for crystals of any space group of symmetry. We apply such a technique to the study of high-pressure elastic properties of three silicate garnet end-members (namely, pyrope, grossular, and andradite) which are of great geophysical interest, being among the most important rock-forming minerals. The reliability of this theoretical approach is proved by comparing with available experimental measurements. The description of high-pressure properties provided by several equations of state is also critically discussed.

  10. Thermodynamics and Structural Properties of the High Density Gaussian Core Model

    E-Print Network [OSTI]

    Atsushi Ikeda; Kunimasa Miyazaki

    2011-07-20T23:59:59.000Z

    We numerically study thermodynamic and structural properties of the one-component Gaussian core model (GCM) at very high densities. The solid-fluid phase boundary is carefully determined. We find that the density dependence of both the freezing and melting temperatures obey the asymptotic relation, $\\log T_f$, $\\log T_m \\propto -\\rho^{2/3}$, where $\\rho$ is the number density, which is consistent with Stillinger's conjecture. Thermodynamic quantities such as the energy and pressure and the structural functions such as the static structure factor are also investigated in the fluid phase for a wide range of temperature above the phase boundary. We compare the numerical results with the prediction of the liquid theory with the random phase approximation (RPA). At high temperatures, the results are in almost perfect agreement with RPA for a wide range of density, as it has been already shown in the previous studies. In the low temperature regime close to the phase boundary line, although RPA fails to describe the structure factors and the radial distribution functions at the length scales of the interparticle distance, it successfully predicts their behaviors at shorter length scales. RPA also predicts thermodynamic quantities such as the energy, pressure, and the temperature at which the thermal expansion coefficient becomes negative, almost perfectly. Striking ability of RPA to predict thermodynamic quantities even at high densities and low temperatures is understood in terms of the decoupling of the length scales which dictate thermodynamic quantities from the interparticle distance which dominates the peak structures of the static structure factor due to the softness of the Gaussian core potential.

  11. Methicillin-Resistant Staphylococcus aureus Infection and Hospitalization in High-Risk Patients in the Year following Detection

    E-Print Network [OSTI]

    2011-01-01T23:59:59.000Z

    of print. 13. Huang SS, Platt R (2003) Risk of methicillin-Nelson 3 , Richard Platt 2,3 1 Division of Infectious

  12. Understanding and Improving High-Temperature Structural Properties of Metal-Silicide Intermetallics

    SciTech Connect (OSTI)

    Bruce S. Kang

    2005-10-10T23:59:59.000Z

    The objective of this project was to understand and improve high-temperature structural properties of metal-silicide intermetallic alloys. Through research collaboration between the research team at West Virginia University (WVU) and Dr. J.H. Schneibel at Oak Ridge National Laboratory (ORNL), molybdenum silicide alloys were developed at ORNL and evaluated at WVU through atomistic modeling analyses, thermo-mechanical tests, and metallurgical studies. In this study, molybdenum-based alloys were ductilized by dispersing MgAl2O4 or MgO spinel particles. The addition of spinel particles is hypothesized to getter impurities such as oxygen and nitrogen from the alloy matrix with the result of ductility improvement. The introduction of fine dispersions has also been postulated to improve ductility by acting as a dislocation source or reducing dislocation pile-ups at grain boundaries. The spinel particles, on the other hand, can also act as local notches or crack initiation sites, which is detrimental to the alloy mechanical properties. Optimization of material processing condition is important to develop the desirable molybdenum alloys with sufficient room-temperature ductility. Atomistic analyses were conducted to further understand the mechanism of ductility improvement of the molybdenum alloys and the results showed that trace amount of residual oxygen may be responsible for the brittle behavior of the as-cast Mo alloys. For the alloys studied, uniaxial tensile tests were conducted at different loading rates, and at room and elevated temperatures. Thermal cycling effect on the mechanical properties was also studied. Tensile tests for specimens subjected to either ten or twenty thermal cycles were conducted. For each test, a follow-up detailed fractography and microstructural analysis were carried out. The test results were correlated to the size, density, distribution of the spinel particles and processing time. Thermal expansion tests were carried out using thermo-mechanical analyzer (TMA). Results showed that the coefficient of thermal expansion (CTE) value decreases with the addition of spinel and silicide particles. Thermo-cycling tests showed that molybdenum alloy with 6% wt of spinel (MgAl2O4) developed microcracks which were caused by thermal expansion mismatch between the spinel particles and molybdenum matrix, as well as the processing conditions. Detailed post-mortem studies of microstructures and segregation of impurities to the oxide dispersion/Mo interfaces were conducted using x-ray diffraction (XRD), scanning electron microscopy (SEM), and energy dispersive spectroscopy (EDS).

  13. DNA Repair Alterations in Children With Pediatric Malignancies: Novel Opportunities to Identify Patients at Risk for High-Grade Toxicities

    SciTech Connect (OSTI)

    Ruebe, Claudia E., E-mail: claudia.ruebe@uks.e [Department of Radiation Oncology, Saarland University, Homburg/Saar (Germany); Fricke, Andreas; Schneider, Ruth; Simon, Karin; Kuehne, Martin; Fleckenstein, Jochen [Department of Radiation Oncology, Saarland University, Homburg/Saar (Germany); Graeber, Stefan [Institute of Medical Biometrics, Epidemiology and Medical Informatics, Saarland University, Homburg/Saar (Germany); Graf, Norbert [Department of Pediatric Hematology and Oncology, Saarland University, Homburg/Saar (Germany); Ruebe, Christian [Department of Radiation Oncology, Saarland University, Homburg/Saar (Germany)

    2010-10-01T23:59:59.000Z

    Purpose: To evaluate, in a pilot study, the phosphorylated H2AX ({gamma}H2AX) foci approach for identifying patients with double-strand break (DSB) repair deficiencies, who may overreact to DNA-damaging cancer therapy. Methods and Materials: The DSB repair capacity of children with solid cancers was analyzed compared with that of age-matched control children and correlated with treatment-related normal-tissue responses (n = 47). Double-strand break repair was investigated by counting {gamma}H2AX foci in blood lymphocytes at defined time points after irradiation of blood samples. Results: Whereas all healthy control children exhibited proficient DSB repair, 3 children with tumors revealed clearly impaired DSB repair capacities, and 2 of these repair-deficient children developed life-threatening or even lethal normal-tissue toxicities. The underlying mutations affecting regulatory factors involved in DNA repair pathways were identified. Moreover, significant differences in mean DSB repair capacity were observed between children with tumors and control children, suggesting that childhood cancer is based on genetic alterations affecting DSB repair function. Conclusions: Double-strand break repair alteration in children may predispose to cancer formation and may affect children's susceptibility to normal-tissue toxicities. Phosphorylated H2AX analysis of blood samples allows one to detect DSB repair deficiencies and thus enables identification of children at risk for high-grade toxicities.

  14. HIGH RISK COUNTRIES Afghanistan

    E-Print Network [OSTI]

    Duchowski, Andrew T.

    Tuvalu Uganda Ukraine Uruguay Uzbekistan Vanuatu Venezuela, RB Vietnam Yemen, Rep. Zambia Zimbabwe #12;

  15. High-pressure structural and elastic properties of Tl{sub 2}O{sub 3}

    SciTech Connect (OSTI)

    Gomis, O., E-mail: osgohi@fis.upv.es; Vilaplana, R. [Centro de Tecnologías Físicas, MALTA Consolider Team, Universitat Politècnica de València, 46022 València (Spain); Santamaría-Pérez, D. [Departamento de Física Aplicada-ICMUV, MALTA Consolider Team, Universidad de Valencia, Edificio de Investigación, C/Dr. Moliner 50, 46100 Burjassot (Spain); Earth Sciences Department, University College London, Gower Street, WC1E 6BT London (United Kingdom); Ruiz-Fuertes, J. [Departamento de Física Aplicada-ICMUV, MALTA Consolider Team, Universidad de Valencia, Edificio de Investigación, C/Dr. Moliner 50, 46100 Burjassot (Spain); Geowissenschaften, Goethe-Universität, Altenhöferallee 1, 60438 Frankfurt am Main (Germany); Sans, J. A.; Manjón, F. J.; Mollar, M. [Instituto de Diseño para la Fabricación y Producción Automatizada, MALTA Consolider Team, Universitat Politècnica de València, 46022 València (Spain); and others

    2014-10-07T23:59:59.000Z

    The structural properties of Thallium (III) oxide (Tl{sub 2}O{sub 3}) have been studied both experimentally and theoretically under compression at room temperature. X-ray powder diffraction measurements up to 37.7?GPa have been complemented with ab initio total-energy calculations. The equation of state of Tl{sub 2}O{sub 3} has been determined and compared to related compounds. It has been found experimentally that Tl{sub 2}O{sub 3} remains in its initial cubic bixbyite-type structure up to 22.0?GPa. At this pressure, the onset of amorphization is observed, being the sample fully amorphous at 25.2?GPa. The sample retains the amorphous state after pressure release. To understand the pressure-induced amorphization process, we have studied theoretically the possible high-pressure phases of Tl{sub 2}O{sub 3}. Although a phase transition is theoretically predicted at 5.8?GPa to the orthorhombic Rh{sub 2}O{sub 3}-II-type structure and at 24.2?GPa to the orthorhombic ?-Gd{sub 2}S{sub 3}-type structure, neither of these phases were observed experimentally, probably due to the hindrance of the pressure-driven phase transitions at room temperature. The theoretical study of the elastic behavior of the cubic bixbyite-type structure at high-pressure shows that amorphization above 22?GPa at room temperature might be caused by the mechanical instability of the cubic bixbyite-type structure which is theoretically predicted above 23.5?GPa.

  16. Engineering properties of miniature cement - fly ash compacts prepared by high pressure compaction 

    E-Print Network [OSTI]

    Bormann, Jeffrey Ray

    1985-01-01T23:59:59.000Z

    ENGINEERING PROPERTIES OF MINIATURE CEMENT - FLY ASH COMPACTS PREPARED BY HIGH PRESSURE COMPACTION E NGIRPR OT SFMMAFU AEU C-ALEYY HDOBPvvIi va vGI ge(iD(vI oannItI au NId(R E)L xrP1IeRPvT 9(evP(n uDnuPnnBIrv au vGI eI0DPeIBIrvR uae vGI i...?H?? NId(R E)L xrP1IeRPvT oG(PeB(r au Ei1PRaeT oaBBPvvII? ?e? ??C? ?IiOIvvIe oDeeIrv 9e(8vP8IR (ri vGIaeT 8aruaeB va vGI 8ar8I9v vG(v uae R9I8P(nP?Ii DRIR ( 9aevn(ri 8IBIrv 8ar8eIvI B(vIeP(n ?PvG RveIrtvG (99ea(8GPrt ?????? 9RP B(T OI 9eaiD8Ii OT eIiD8...

  17. Thermal Properties of Graphene and Applications for Thermal Management of High-Power Density Electronics

    E-Print Network [OSTI]

    Yan, Zhong

    2013-01-01T23:59:59.000Z

    developed rapidly for graphene preparation. One method is tostructure, graphene sample preparations, Raman spectroscopyProperties of Graphene and Sample Preparation The discovery

  18. The growth and optical properties of large, high-quality AlN single crystals Martin Strassburg,a)

    E-Print Network [OSTI]

    Nabben, Reinhard

    made GaN and AlN the most serious candidates for the high-power and high-frequency electronic and deep emission and absorption properties of the crystals revealed bands around 3.5 and 4.3 eV at room temperature. Absorption edges ranging between 4.1 and 5.95 eV were observed. Since no straight correlation of the oxygen

  19. NUMERICAL MODELLING OF AUTOGENOUS HEALING AND RECOVERY OF MECHANICAL PROPERTIES IN ULTRA-HIGH

    E-Print Network [OSTI]

    Boyer, Edmond

    in the cementitious matrix can react with carbon dioxide dissolved in the water filling the crack. Autogenous healingNUMERICAL MODELLING OF AUTOGENOUS HEALING AND RECOVERY OF MECHANICAL PROPERTIES IN ULTRA into the crack and leads to a partial recovery of mechanical properties (Young's modulus, tensile strength

  20. GAO-11-879T Federal Real Property: Overreliance on Leasing Contributed to High-Risk Designation

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport inEnergy0.pdfTechnologies ProgramOutfittedof6ExecutiveOfficetheEconomicFederal

  1. OAK 270 - The use of Lidar/radiometer (LIRAD) in the ARM program to obtain optical properties and microphysics of high and midlevel clouds

    SciTech Connect (OSTI)

    C.M.R. Platt; R.T. Austin; S.A. Young; and G.L. Stephens

    2002-12-13T23:59:59.000Z

    OAK 270 - The use of Lidar/Radiometer (LIRAD) in the ARM program to obtain optical properties and microphysics of high and midlevel clouds

  2. Thermal Properties of Graphene and Applications for Thermal Management of High-Power Density Electronics

    E-Print Network [OSTI]

    Yan, Zhong

    2013-01-01T23:59:59.000Z

    the development of high-power density semiconductor devices.Management of High-Power Density Electronics A DissertationManagement of High-Power Density Electronics by Zhong Yan

  3. Ab-initio elastic and thermodynamic properties of high-temperature cubic intermetallics at finite temperatures 

    E-Print Network [OSTI]

    Williams, Michael Eric

    2009-05-15T23:59:59.000Z

    In thiswork we present the development of a method for the prediciton of finite temperature elastic and thermodynamic properties of cubic, non-magnetic unary and binary metals from first principles calculations. Vibrational, electronic...

  4. High-Btu gas from peat. A feasibility study. Task 9. 2. Financial risk analysis. Final report

    SciTech Connect (OSTI)

    Not Available

    1982-05-01T23:59:59.000Z

    In September 1980, the US Department of Energy awarded grant No. DE-FG01-80RA50348 to the Minnesota Gas Company (Minnegasco) to evaluate the commercial viability - technical, economic, and environmental - of producing 80 million SCF/day of substitute natural gas (SNG) from peat. Minnegasco's project team for this study consisted of Dravo Engineers and Constructors (for design, engineering and economics of peat harvesting, dewatering and gasification systems); Ertec, Inc. (for environmental and socioeconomic analyses); Institute of Gas Technology (for gasification process information, and technical and engineering support) and Deloitte Haskins and Sells (for management structural support.) This final report presents the work conducted under Task 9.2 (Risk Assessment) by the Institute of Gas Technology (IGT), the developer of the PEATGAS process selected for the study. At this time, there is little technical doubt that the PEATGAS gasifier can indeed operate. In order to assess the risks associated with the peat gasification facility, it was subdivided according to the following risk areas; (1) peat harvesting; (2) peat dewatering; (3) peat gasification; and (4) environmental. In summary, the risks associated with the peat gasification facility are manageable. Even under the extreme risk of no peat availability, the gasification facility can be operated with lignite at a slightly higher SNG price. 1 figure, 5 tables.

  5. Dose-Escalated Radiotherapy for High-Risk Prostate Cancer: Outcomes in Modern Era With Short-Term Androgen Deprivation Therapy

    SciTech Connect (OSTI)

    Liauw, Stanley L., E-mail: sliauw@radonc.uchicago.ed [Department of Radiation and Cellular Oncology, University of Chicago Pritzker School of Medicine, Chicago, IL (United States); Stadler, Walter M. [Department of Medical Oncology, University of Chicago Pritzker School of Medicine, Chicago, IL (United States); Correa, David B.S.; Weichselbaum, Ralph R. [Department of Radiation and Cellular Oncology, University of Chicago Pritzker School of Medicine, Chicago, IL (United States); Jani, Ashesh B. [Department of Radiation Oncology, Emory University, Atlanta, GA (United States)

    2010-05-01T23:59:59.000Z

    Purpose: Randomized data have supported the use of long-term androgen deprivation therapy (ADT) combined with radiotherapy (RT) for men with high-risk prostate cancer. The present study reviewed the outcomes of intermediate- and high-risk men treated with RT and short-term ADT. Materials and Methods: A total of 184 men with any single risk factor of prostate-specific antigen >=10 ng/mL, clinical Stage T2b or greater, or Gleason score >=7 were treated with primary external beam RT for nonmetastatic adenocarcinoma of the prostate. The median radiation dose was 74 Gy; 55% were treated with intensity-modulated RT. All patients received ADT for 1 to 6 months (median, 4), consisting of a gonadotropin-releasing hormone analog. Univariate and multivariable analyses were performed for risk factors, including T stage, Gleason score, radiation dose, and prostate-specific antigen level. Results: With a median follow-up of 51 months, the 4-year freedom from biochemical failure (FFBF) using the nadir plus 2 ng/mL definition was 83% for all patients. Clinical Stage T3 disease was the only variable tested associated with FFBF on univariate (4-year FFBF rate, 46% vs. 87% for Stage T1-T2c disease; p = .0303) and multivariable analysis (hazard ratio, 3.9; p = .0016). On a subset analysis of high-risk patients (National Comprehensive Cancer Network criteria), those with clinical Stage T3 disease (4-year FFBF rate, 46% vs. 80%; p = .0303) and a radiation dose <74 Gy (4-year FFBF rate, 64% vs. 80%) had a poorer outcome on univariate analysis. However, clinical Stage T3 disease and radiation dose were not significant on multivariable analysis, although a statistical multivariable trend was seen for both (p = .0650 and p = .0597, respectively). Conclusion: Short-term ADT and RT might be acceptable for men with intermediate- and high-risk prostate cancer, especially for clinically localized disease treated with doses of >=74 Gy.

  6. Synthesis of novel polyimides for the testing of structure-processing and property relations when used to form high temperature polymer matrices

    E-Print Network [OSTI]

    Tschen Molina, Francisco

    2007-04-25T23:59:59.000Z

    constants [17], spectroscopic properties [18,19] and molecular order to mention a few [20,21]. The addition of fluorine atoms incorporated into the polyimide, the chemical structure affects many properties that can add superior properties to the polymer...SYNTHESIS OF NOVEL POLYIMIDES FOR THE TESTING OF STRUCTURE- PROCESSING AND PROPERTY RELATIONS WHEN USED TO FORM HIGH TEMPERATURE POLYMER MATRICES A Thesis by FRANCISCO TSCHEN MOLINA Submitted to the Office of Graduate...

  7. PSA Response to Neoadjuvant Androgen Deprivation Therapy Is a Strong Independent Predictor of Survival in High-Risk Prostate Cancer in the Dose-Escalated Radiation Therapy Era

    SciTech Connect (OSTI)

    McGuire, Sean E., E-mail: semcguir@mdanderson.org [Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas (United States); Lee, Andrew K. [Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)] [Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Cerne, Jasmina Z. [Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas (United States)] [Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas (United States); Munsell, Mark F. [Department of Biostatistics, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)] [Department of Biostatistics, University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Levy, Lawrence B. [Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)] [Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Kudchadker, Rajat J. [Department of Radiation Physics, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)] [Department of Radiation Physics, University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Choi, Seungtaek L.; Nguyen, Quynh N.; Hoffman, Karen E.; Pugh, Thomas J.; Frank, Steven J. [Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)] [Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Corn, Paul G.; Logothetis, Christopher J. [Department of Genitourinary Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)] [Department of Genitourinary Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Kuban, Deborah A. [Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)] [Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)

    2013-01-01T23:59:59.000Z

    Purpose: The aim of the study was to evaluate the prognostic value of prostate-specific antigen (PSA) response to neoadjuvant androgen deprivation therapy (ADT) prior to dose-escalated radiation therapy (RT) and long-term ADT in high-risk prostate cancer. Methods and Materials: We reviewed the charts of all patients diagnosed with high-risk prostate cancer and treated with a combination of long-term ADT (median, 24 months) and dose-escalated (median, 75.6 Gy) RT between 1990 and 2007. The associations among patient, tumor, and treatment characteristics with biochemical response to neoadjuvant ADT and their effects on failure-free survival (FFS), time to distant metastasis (TDM), prostate cancer-specific mortality (PCSM) and overall survival (OS) were examined. Results: A total of 196 patients met criteria for inclusion. Median follow-up time for patients alive at last contact was 7.0 years (range, 0.5-18.1 years). Multivariate analysis identified the pre-RT PSA concentration (<0.5 vs {>=}0.5 ng/mL) as a significant independent predictor of FFS (P=.021), TDM (P=.009), PCSM (P=.039), and OS (P=.037). On multivariate analysis, pretreatment PSA (iPSA) and African-American race were significantly associated with failure to achieve a pre-RT PSA of <0.5 ng/mL. Conclusions: For high-risk prostate cancer patients treated with long-term ADT and dose-escalated RT, a pre-RT PSA level {>=}0.5 ng/mL after neoadjuvant ADT predicts for worse survival measures. Both elevated iPSA and African-American race are associated with increased risk of having a pre-RT PSA level {>=}0.5 ng/mL. These patients should be considered for clinical trials that test newer, more potent androgen-depleting therapies such as abiraterone and MDV3100 in combination with radiation.

  8. Synthesis, structure and properties of high pressure and ambient pressure ternary vanadium oxides 

    E-Print Network [OSTI]

    Markkula, Mikael

    2013-11-28T23:59:59.000Z

    Transition metal oxides have been extensively studied during past decades. The purpose of this research was to synthesize new or little characterised transition metal oxides using high-pressure/high-temperature (HPHT) ...

  9. Microlattices as architected thin films: Analysis of mechanical properties and high strain elastic recovery

    E-Print Network [OSTI]

    Maloney, Kevin J; Roper, Christopher S; Jacobsen, Alan J; Carter, William B; Valdevit, Lorenzo; Schaedler, Tobias A

    2013-01-01T23:59:59.000Z

    glass. High-strain recoverability, reported previously in carbon nanotube forests 14–16 and viscoelastic polymer foams,

  10. Method of manufacturing a high temperature superconductor with improved transport properties

    DOE Patents [OSTI]

    Balachandran, Uthamalingam (Hinsdale, IL); Siegel, Richard W. (Hinsdale, IL); Askew, Thomas R. (Kalamazoo, MI)

    2001-01-01T23:59:59.000Z

    A method of preparing a high temperature superconductor. A method of preparing a superconductor includes providing a powdered high temperature superconductor and a nanophase paramagnetic material. These components are combined to form a solid compacted mass with the paramagnetic material disposed on the grain boundaries of the polycrystaline high temperature superconductor.

  11. High-explosive properties from classical molecular dynamics simulations and quantum-chemical computations

    SciTech Connect (OSTI)

    Sewell, T. D. (Thomas D.); Gan, C. K. (Chee Kwan); Jaramillo, E. (Eugenio); Strachan, A. H. (Alejandro H.)

    2004-01-01T23:59:59.000Z

    We are using classical molecular dynamics and condensed phase electronic-structure methods to predict some of the thermophysical and mechanical properties that are needed as input to realistic mesoscale models for plastic-bonded explosives. The main materials studied to date are HMX, PETN, Estane copolymer, and bi(2,2-dinitropropyl) formal/acetal (BDNPF/A). Emphasis is placed on non-reactive properties and thermodynamic states relevant to cookoff and shock initiation phenomena. Both crystal and liquid-state properties are of interest. Typical simulation sizes and times are {approx}10{sup 2} molecules and 2-10 ns, respectively. The overarching goal is to develop internally consistent model thermodynamic and elastic mechanical descriptions for the materials. Prioritization among the set of properties amenable to atomistic simulation is made based on ongoing interactions with mesoscale modelers at Los Alamos and elsewhere. Recent work will be summarized and our view of profitable directions for future research will be discussed, including preliminary results for large-scale molecular dynamics simulations of shock response of crystalline HMX.

  12. Properties of potential eco-friendly gas replacements for particle detectors in high-energy physics

    E-Print Network [OSTI]

    Benussi, L; Piccolo, D; Saviano, G; Colafranceschi, S; Kjølbro, J; Sharma, A; Yang, D; Chen, G; Ban, Y; Li, Q

    2015-01-01T23:59:59.000Z

    Modern gas detectors for detection of particles require F-based gases for optimal performance. Recent regulations demand the use of environmentally unfriendly F-based gases to be limited or banned. This review studies properties of potential eco-friendly gas candidate replacements.

  13. Properties of potential eco-friendly gas replacements for particle detectors in high-energy physics

    E-Print Network [OSTI]

    Benussi, L; Piccolo, D; Saviano, G; Colafranceschi, S; Kjølbro, J; Yang, D; Chen, G; Ban, Y; Li, Q; Sharma, A

    2015-01-01T23:59:59.000Z

    Modern gas detectors for detection of particles require F-based gases for op- timal performance. Recent regulations demand the use of environmentally un- friendly Freon-based gases to be limited or banned. This review studies properties of potential eco-friendly gas candidate replacements.

  14. 10-Year Survival and Quality of Life in Patients With High-Risk {sub P}N{sub 0} Prostate Cancer Following Definitive Radiotherapy

    SciTech Connect (OSTI)

    Berg, Arne [Faculty of Medicine, University of Oslo, Oslo (Norway)], E-mail: arne.berg@radiumhospitalet.no; Lilleby, Wolfgang [Department of Oncology, Rikshospitalet-Radiumhospitalet Medical Center, Oslo (Norway); Bruland, Oyvind Sverre; Fossa, Sophie Dorothea [Faculty of Medicine, University of Oslo, Oslo (Norway); Department of Oncology, Rikshospitalet-Radiumhospitalet Medical Center, Oslo (Norway)

    2007-11-15T23:59:59.000Z

    Purpose: To evaluate long-term overall survival (OS), cancer-specific survival (CSS), clinical progression-free survival (cPFS), and health-related quality of life (HRQoL) following definitive radiotherapy (RT) given to T{sub 1-4p}N{sub 0}M{sub 0} prostate cancer patients provided by a single institution between 1989 and 1996. Methods and Materials: We assessed outcome among 203 patients who had completed three-dimensional conformal RT (66 Gy) without hormone treatment and in whom staging by lymphadenectomy had been performed. OS was compared with an age-matched control group from the general population. A cross-sectional, self-report survey of HRQoL was performed among surviving patients. Results: Median observation time was 10 years (range, 1-16 years). Eighty-one percent had high-risk tumors defined as T{sub 3-4} or Gleason score (GS) {>=}7B (4+3). Among these, 10-year OS, CSS, and cPFS rates were 52%, 66%, and 39%, respectively. The corresponding fractions in low-risk patients (T{sub 1-2} and GS {<=}7A [3+4]) were 79%, 95%, and 73%, respectively. Both CSS and cPFS were predicted by GS and T-classification; OS was associated with GS only. High-risk, but not low-risk, patients had reduced OS compared with the general population (p < 0.0005). When pelvis-related side effects were included in multivariate analyzes together with physical function and pain, sexual, urinary, and bowel function were not independently associated with self-reported global quality of life. Conclusions: Despite surgically proven {sub p}N{sub 0}, RT with dosage <70 Gy as monotherapy does not give satisfactory CSS rates after 10 years in patients with T{sub 3-4} or GS {>=}7B.

  15. The Effect of Radiation Timing on Patients With High-Risk Features of Parameningeal Rhabdomyosarcoma: An Analysis of IRS-IV and D9803

    SciTech Connect (OSTI)

    Spalding, Aaron C., E-mail: Aaron.Spalding@nortonhealthcare.org [Kosair Children's Hospital and Brain Tumor Center, Louisville, Kentucky (United States); Hawkins, Douglas S. [Division of Hematology/Oncology, Seattle Children's Hospital, and Fred Hutchinson Cancer Research Center, University of Washington, Seattle, Washington (United States); Donaldson, Sarah S. [Department of Radiation Oncology, Stanford University Medical Center, Stanford, California (United States); Anderson, James R.; Lyden, Elizabeth [University of Nebraska Medical Center, Omaha, Nebraska (United States); Laurie, Fran [Quality Assurance Review Center, Providence, Rhode Island and Seattle, Washington (United States); Wolden, Suzanne L. [Department of Radiation Oncology, Memorial Sloan-Kettering Cancer Center, New York, New York (United States); Arndt, Carola A.S. [Department of Pediatric and Adolescent Medicine, Mayo Clinic, Rochester, Minnesota (United States); Michalski, Jeff M. [Department of Radiation Oncology, Washington University School of Medicine, St. Louis, Missouri (United States)

    2013-11-01T23:59:59.000Z

    Purpose: Radiation therapy remains an essential treatment for patients with parameningeal rhabdomyosarcoma (PMRMS), and early radiation therapy may improve local control for patients with intracranial extension (ICE). Methods and Materials: To address the role of radiation therapy timing in PMRMS in the current era, we reviewed the outcome from 2 recent clinical trials for intermediate-risk RMS: Intergroup Rhabdomyosarcoma Study (IRS)-IV and Children's Oncology Group (COG) D9803. The PMRMS patients on IRS-IV with any high-risk features (cranial nerve palsy [CNP], cranial base bony erosion [CBBE], or ICE) were treated immediately at day 0, and PMRMS patients without any of these 3 features received week 6-9 radiation therapy. The D9803 PMRMS patients with ICE received day 0 X-Ray Therapy (XRT) as well; however, those with either CNP or CBBE had XRT at week 12. Results: Compared with the 198 PMRMS patients from IRS-IV, the 192 PMRMS patients from D9803 had no difference (P<.05) in 5-year local failure (19% vs 19%), failure-free-survival (70% vs 67%), or overall survival (75% vs 73%) in aggregate. The 5-year local failure rates by subset did not differ when patients were classified as having no risk features (None, 15% vs 19%, P=.25), cranial nerve palsy/cranial base of skull erosion (CNP/CBBE, 15% vs 28%, P=.22), or intracranial extension (ICE, 21% vs 15%, P=.27). The D9083 patients were more likely to have received initial staging by magnetic resonance imaging (71% vs 53%). Conclusions: These data support that a delay in radiation therapy for high-risk PMRMS features of CNP/CBBE does not compromise clinical outcomes.

  16. PVD synthesis and high-throughput property characterization of Ni?Fe?Cr alloy libraries

    SciTech Connect (OSTI)

    Rar, A.; Frafjord, J.J.; Fowlkes, Jason D.; Specht, E.D.; Rack, P.D.; Santella, M.L.; Bei, H.; George, E.P.; Pharr, G.M. (Tennessee-K); (Tennessee-K); (ORNL)

    2010-11-10T23:59:59.000Z

    Three methods of alloy library synthesis, thick-layer deposition followed by interdiffusion, composition-spread codeposition and electron-beam melting of thick deposited layers, have been applied to Ni-Fe-Cr ternary and Ni-Cr binary alloys. Structural XRD mapping and mechanical characterization by means of nanoindentation have been used to characterize the properties of the libraries. The library synthesis methods are compared from the point of view of the structural and mechanical information they can provide.

  17. Influence of high-temperature firing in vacuum on the structural properties of yttrium oxide

    SciTech Connect (OSTI)

    Solov'eva, A.E.; Artemova, K.K.; Kipshidze, A.V.; Rudenko, L.A.

    1986-05-01T23:59:59.000Z

    This article presents the results of a study of the influence of firing in the range 1900-2300 degrees C in vacuum on the structural properties of yttrium oxide. It was found that in the 1900-2300 degrees C range there are changes in the mass, the phase composition, and the color of the specimens. Increasing of the firing temperature to 2300 degrees C leads to an increase in the mass loss to 50% over a period of 9 h.

  18. MICROSTRUCTURE AND MECHANICAL PROPERTY PERFORMANCE OF COMMERCIAL GRADE API PIPELINE STEELS IN HIGH PRESSURE GASEOUS HYDROGEN

    SciTech Connect (OSTI)

    Stalheim, Mr. Douglas [DGS Metallurgical Solutions Inc; Boggess, Todd [Secat; San Marchi, Chris [Sandia National Laboratories (SNL); Jansto, Steven [Reference Metals Company; Somerday, Dr. B [Sandia National Laboratories (SNL); Muralidharan, Govindarajan [ORNL; Sofronis, Prof. Petros [University of Illinois

    2010-01-01T23:59:59.000Z

    The continued growth of the world s developing countries has placed an ever increasing demand on traditional fossil fuel energy sources. This development has lead to increasing research and development of alternative energy sources. Hydrogen gas is one of the potential alternative energy sources under development. Currently the most economical method of transporting large quantities of hydrogen gas is through steel pipelines. It is well known that hydrogen embrittlement has the potential to degrade steel s mechanical properties when hydrogen migrates into the steel matrix. Consequently, the current pipeline infrastructure used in hydrogen transport is typically operated in a conservative fashion. This operational practice is not conducive to economical movement of significant volumes of hydrogen gas as an alternative to fossil fuels. The degradation of the mechanical properties of steels in hydrogen service is known to depend on the microstructure of the steel. Understanding the levels of mechanical property degradation of a given microstructure when exposed to hydrogen gas under pressure can be used to evaluate the suitability of the existing pipeline infrastructure for hydrogen service and guide alloy and microstructure design for new hydrogen pipeline infrastructure. To this end, the 2 Copyright 2010 by ASME microstructures of relevant steels and their mechanical properties in relevant gaseous hydrogen environments must be fully characterized to establish suitability for transporting hydrogen. A project to evaluate four commercially available pipeline steels alloy/microstructure performance in the presences of gaseous hydrogen has been funded by the US Department of Energy along with the private sector. The microstructures of four pipeline steels were characterized and then tensile testing was conducted in gaseous hydrogen and helium at pressures of 800, 1600 and 3000 psi. Based on measurements of reduction of area, two of the four steels that performed the best across the pressure range were selected for evaluation of fracture and fatigue performance in gaseous hydrogen at 800 and 3000 psi. This paper will describe the work performed on four commercially available pipeline steels in the presence of gaseous hydrogen at pressures relevant for transport in pipelines. Microstructures and mechanical property performances will be compared. In addition, recommendations for future work related to gaining a better understanding of steel pipeline performance in hydrogen service will be discussed.

  19. Properties of nanostructured diamond-silicon carbide composites sintered by high pressure infiltration technique

    E-Print Network [OSTI]

    Gubicza, Jenõ

    peak profiles using Fourier coefficients of ab initio theoretical size and strain profiles Materials Research Society 2703 #12;electric power dissipated in the apparatus. Obtained power­ temperature and load­pressure plots were used as the calibration curves for subsequent high-pressure, high- temperature

  20. Materials Properties Database for Selection of High-Temperature Alloys and Concepts of Alloy Design for SOFC Applications

    SciTech Connect (OSTI)

    Yang, Z Gary; Paxton, Dean M.; Weil, K. Scott; Stevenson, Jeffry W.; Singh, Prabhakar

    2002-11-24T23:59:59.000Z

    To serve as an interconnect / gas separator in an SOFC stack, an alloy should demonstrate the ability to provide (i) bulk and surface stability against oxidation and corrosion during prolonged exposure to the fuel cell environment, (ii) thermal expansion compatibility with the other stack components, (iii) chemical compatibility with adjacent stack components, (iv) high electrical conductivity of the surface reaction products, (v) mechanical reliability and durability at cell exposure conditions, (vii) good manufacturability, processability and fabricability, and (viii) cost effectiveness. As the first step of this approach, a composition and property database was compiled for high temperature alloys in order to assist in determining which alloys offer the most promise for SOFC interconnect applications in terms of oxidation and corrosion resistance. The high temperature alloys of interest included Ni-, Fe-, Co-base superal

  1. ULTRA-HIGH TEMPERATURE SENSORS BASED ON OPTICAL PROPERTY MODULATION AND VIBRATION-TOLERANT INTERFEROMETRY

    SciTech Connect (OSTI)

    Nabeel A. Riza

    2005-07-22T23:59:59.000Z

    The goals of the first six months of this project were to begin laying the foundations for both the SiC front-end optical chip fabrication techniques for high pressure gas species sensing as well as the design, assembly, and test of a portable high pressure high temperature calibration test cell chamber for introducing gas species. This calibration cell will be used in the remaining months for proposed first stage high pressure high temperature gas species sensor experimentation and data processing. All these goals have been achieved and are described in detail in the report. Both design process and diagrams for the mechanical elements as well as the optical systems are provided. Photographs of the fabricated calibration test chamber cell, the optical sensor setup with the calibration cell, the SiC sample chip holder, and relevant signal processing mathematics are provided. Initial experimental data from both the optical sensor and fabricated test gas species SiC chips is provided. The design and experimentation results are summarized to give positive conclusions on the proposed novel high temperature high pressure gas species detection optical sensor technology.

  2. High-precision description and new properties of a spin-1 particle in a magnetic field

    E-Print Network [OSTI]

    Alexander J. Silenko

    2014-06-09T23:59:59.000Z

    The exact Foldy-Wouthuysen Hamiltonian is derived for a pointlike spin-1 particle with a normal magnetic moment in a nonuniform magnetic field. For a uniform magnetic field, it is exactly separated into terms linear and quadratic in spin. New unexpected properties of a particle with an anomalous magnetic moment are found. Spin projections of a particle moving in a uniform magnetic field are not integer and the tensor polarization is asymmetric in the plane orthogonal to the field. Previously described spin-tensor effects caused by the tensor magnetic polarizability exist not only for nuclei but also for pointlike particles.

  3. Advanced properties of extended plasmas for efficient high-order harmonic generation

    SciTech Connect (OSTI)

    Ganeev, R. A. [Ophthalmology and Advanced Laser Medical Center, Saitama Medical University, Saitama 350-0495 (Japan) [Ophthalmology and Advanced Laser Medical Center, Saitama Medical University, Saitama 350-0495 (Japan); Physics Department, Voronezh State University, Voronezh 394006 (Russian Federation); Suzuki, M.; Kuroda, H. [Ophthalmology and Advanced Laser Medical Center, Saitama Medical University, Saitama 350-0495 (Japan)] [Ophthalmology and Advanced Laser Medical Center, Saitama Medical University, Saitama 350-0495 (Japan)

    2014-05-15T23:59:59.000Z

    We demonstrate the advanced properties of extended plasma plumes (5?mm) for efficient harmonic generation of laser radiation compared with the short lengths of plasmas (?0.3–0.5?mm) used in previous studies. The harmonic conversion efficiency quadratically increased with the growth of plasma length. The studies of this process along the whole extreme ultraviolet range using the long plasma jets produced on various metal surfaces, particularly including the resonance-enhanced laser frequency conversion and two-color pump, are presented. Such plasmas could be used for the quasi-phase matching experiments by proper modulation of the spatial characteristics of extended ablating area and formation of separated plasma jets.

  4. Thermal properties of granular silica aerogel for high-performance insulation systems

    E-Print Network [OSTI]

    Neugebauer, Adam (Adam Halbert)

    2013-01-01T23:59:59.000Z

    Based on mounting evidence in support of anthropogenic global climate change, there is an urgency for developments in high-performance building techniques and technologies. New construction projects provide substantial ...

  5. Identification of honeycomb sandwich properties by high-resolution modal analysis

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    implementations. The high-resolution modal analysis (HRMA) technique [5] is an alternative to the FT of the modal analysis of a large panel (lx,y/h 80). The HRMA technique is used to estimate modal frequencies

  6. Thermal Properties of Graphene and Applications for Thermal Management of High-Power Density Electronics

    E-Print Network [OSTI]

    Yan, Zhong

    2013-01-01T23:59:59.000Z

    Turin and A. A. Balandin, Electronics Letters 40, 81 (2004).REFERENCES G. E. Moore, Electronics 38 (1965). E. Pop, Nanofor High-power Electronics” PCSI-38:38th Conference on the

  7. First principle study of elastic and thermodynamic properties of FeB{sub 4} under high pressure

    SciTech Connect (OSTI)

    Zhang, Xinyu, E-mail: xyzhang@ysu.edu.cn, E-mail: jiaqianqin@gmail.com, E-mail: riping@ysu.edu.cn; Ning, Jinliang; Sun, Xiaowei; Li, Xinting; Ma, Mingzhen; Liu, Riping, E-mail: xyzhang@ysu.edu.cn, E-mail: jiaqianqin@gmail.com, E-mail: riping@ysu.edu.cn [State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004 (China); Qin, Jiaqian, E-mail: xyzhang@ysu.edu.cn, E-mail: jiaqianqin@gmail.com, E-mail: riping@ysu.edu.cn [Metallurgy and Materials Science Research Institute, Chulalongkorn University, Bangkok 10330 (Thailand); State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004 (China)

    2013-11-14T23:59:59.000Z

    The elastic properties, elastic anisotropy, and thermodynamic properties of the lately synthesized orthorhombic FeB{sub 4} at high pressures are investigated using first-principles density functional calculations. The calculated equilibrium parameters are in good agreement with the available experimental and theoretical data. The obtained normalized volume dependence of high pressure is consistent with the previous experimental data investigated using high-pressure synchrotron x-ray diffraction. The complete elastic tensors and crystal anisotropies of the FeB{sub 4} are also determined in the pressure range of 0–100?GPa. By the elastic stability criteria and vibrational frequencies, it is predicted that the orthorhombic FeB{sub 4} is stable up to 100 GPa. In addition, the calculated B/G ratio reveals that FeB{sub 4} possesses brittle nature in the range of pressure from 0 to 100?GPa. The calculated elastic anisotropic factors suggest that FeB{sub 4} is elastically anisotropic. By using quasi-harmonic Debye model, the compressibility, bulk modulus, the coefficient of thermal expansion, the heat capacity, and the Grüneisen parameter of FeB{sub 4} are successfully obtained in the present work.

  8. Magnetic and microwave properties of U-type hexaferrite films with high remanence and low ferromagnetic resonance linewidth

    SciTech Connect (OSTI)

    Su, Zhijuan; Bennett, Steven; Hu, Bolin; Chen, Yajie, E-mail: y.chen@neu.edu; Harris, Vincent G. [Center for Microwave Magnetic Materials and Integrated Circuits, Northeastern University, Boston, Massachusetts 02115, USA and The Department of Electrical and Computer Engineering, Northeastern University, Boston, Massachusetts 02115 (United States)

    2014-05-07T23:59:59.000Z

    U-type barium hexaferrite films (Ba{sub 4}Ni{sub 1.4}Co{sub 0.6}Fe{sub 36}O{sub 60}) were deposited on (0001) sapphire substrates by pulsed laser deposition. Microstructure and magnetic properties of the films were characterized by X-ray diffraction, scanning electron microscopy and vibrating sample magnetometry. Ferromagnetic resonance (FMR) measurements were performed at X-band. The results indicate an anisotropy field of ?8 kOe, and the saturation magnetization (4?M{sub s}) of ?3.6 kG. An optimal post-deposition annealing of films results in a strong (0 0?n) crystallographic texture and a high hysteresis loop squareness (M{sub r}/M{sub s}?=?92%) leading to self biased properties. Furthermore, the highly self-biased ferrite films exhibited an FMR linewidth of ?200?Oe. The U-type hexaferrite films having low microwave loss, low magnetic anisotropy field, and high squareness are a suitable alternative to Sc or In doped BaM ferrites that have been the choice material for self-biased microwave devices at X-band frequencies.

  9. Whole-Pelvis Radiotherapy in Combination With Interstitial Brachytherapy: Does Coverage of the Pelvic Lymph Nodes Improve Treatment Outcome in High-Risk Prostate Cancer?

    SciTech Connect (OSTI)

    Bittner, Nathan [Tacoma/Valley Radiation Oncology Centers, Tacoma, Washington (United States); Merrick, Gregory S., E-mail: gmerrick@UrologicResearchInstitute.or [Schiffler Cancer Center and Wheeling Jesuit University, Wheeling, West Virginia (United States); Wallner, Kent E. [Radiation Oncology, Puget Sound Health Care System, Department of Veterans Affairs, Seattle, Washington (United States); Butler, Wayne M.; Galbreath, Robert [Schiffler Cancer Center and Wheeling Jesuit University, Wheeling, West Virginia (United States); Adamovich, Edward [Wheeling Hospital, Department of Pathology, Wheeling, West Virginia (United States)

    2010-03-15T23:59:59.000Z

    Purpose: To compare biochemical progression-free survival (bPFS), cause-specific survival (CSS), and overall survival (OS) rates among high-risk prostate cancer patients treated with brachytherapy and supplemental external beam radiation (EBRT) using either a mini-pelvis (MP) or a whole-pelvis (WP) field. Methods and Materials: From May 1995 to October 2005, 186 high-risk prostate cancer patients were treated with brachytherapy and EBRT with or without androgen-deprivation therapy (ADT). High-risk prostate cancer was defined as a Gleason score of >=8 and/or a prostate-specific antigen (PSA) concentration of >=20 ng/ml. Results: With a median follow-up of 6.7 years, the 10-year bPFS, CSS, and OS rates for the WP vs. the MP arms were 91.7% vs. 84.4% (p = 0.126), 95.5% vs. 92.6% (p = 0.515), and 79.5% vs. 67.1% (p = 0.721), respectively. Among those patients who received ADT, the 10-year bPFS, CSS, and OS rates for the WP vs. the MP arms were 93.6% vs. 90.1% (p = 0.413), 94.2% vs. 96.0% (p = 0.927), and 73.7% vs. 70.2% (p = 0.030), respectively. Among those patients who did not receive ADT, the 10-year bPFS, CSS, and OS rates for the WP vs. the MP arms were 82.4% vs. 75.0% (p = 0.639), 100% vs. 88% (p = 0.198), and 87.5% vs. 58.8% (p = 0.030), respectively. Based on multivariate analysis, none of the evaluated parameters predicted for CSS, while bPFS was best predicted by ADT and percent positive biopsy results. OS was best predicted by age and percent positive biopsy results. Conclusions: For high-risk prostate cancer patients receiving brachytherapy, there is a nonsignificant trend toward improved bPFS, CSS, and OS rates when brachytherapy is given with WPRT. This trend is most apparent among ADT-naive patients, for whom a significant improvement in OS was observed.

  10. Effect of dopants on the magnetic properties of MnZn ferrites for high frequency power supplies

    SciTech Connect (OSTI)

    Znidarsic, A.; Limpel, M.; Drofenik, M. [Univ. of Ljubljana (Slovenia)] [Univ. of Ljubljana (Slovenia)

    1995-03-01T23:59:59.000Z

    The effect of additions on the magnetic properties of MnZn ferrites for high frequency power supplies was studied. The investigation revealed that various combinations of dopants added to the ferrite modify the grain boundary resistivity and the magnetic permeability spectra at constant microstructure. Particularly, the combined effect of Sn{sup 4+}, Ti{sup 4+} and Ta{sup 5+} was found to increase the grain boundary resistivity in the ferrites studied and remarkably decrease the power loss at higher frequencies.

  11. High-Pressure Thermodynamic Properties of f-electron Metals, Transition Metal Oxides, and Half-Metallic Magnets

    SciTech Connect (OSTI)

    Richard T. Scalettar; Warren E. Pickett

    2005-08-02T23:59:59.000Z

    This project involves research into the thermodynamic properties of f-electron metals, transition metal oxides, and half-metallic magnets at high pressure. These materials are ones in which the changing importance of electron-electron interactions as the distance between atoms is varied can tune the system through phase transitions from localized to delocalized electrons, from screened to unscreened magnetic moments, and from normal metal to one in which only a single spin specie can conduct. Three main thrusts are being pursued: (i) Mott transitions in transition metal oxides, (ii) magnetism in half-metallic compounds, and (iii) large volume-collapse transitions in f-band metals.

  12. High-field penning-malmberg trap: confinement properties and use in positron accumulation

    SciTech Connect (OSTI)

    Hartley, J.H.

    1997-09-01T23:59:59.000Z

    This dissertation reports on the development of the 60 kG cryogenic positron trap at Lawrence Livermore National Laboratory, and compares the trap`s confinement properties with other nonneutral plasma devices. The device is designed for the accumulation of up to 2{times}10{sup 9} positrons from a linear-accelerator source. This positron plasma could then be used in Bhabha scattering experiments. Initial efforts at time-of-flight accumulation of positrons from the accelerator show rapid ({approximately}100 ms) deconfinement, inconsistent with the long electron lifetimes. Several possible deconfinement mechanisms have been explored, including annihilation on residual gas, injection heating, rf noise from the accelerator, magnet field curvature, and stray fields. Detailed studies of electron confinement demonstrate that the empirical scaling law used to design the trap cannot be extrapolated into the parameter regime of this device. Several possible methods for overcoming these limitations are presented.

  13. Analytic properties of high energy production amplitudes in N=4 SUSY

    E-Print Network [OSTI]

    L. N. Lipatov

    2010-11-12T23:59:59.000Z

    We investigate analytic properties of the six point planar amplitude in N=4 SUSY at the multi-Regge kinematics for final state particles. For inelastic processes the Steinmann relations play an important role because they give a possibility to fix the phase structure of the Regge pole and Mandelstam cut contributions. These contributions have the Moebius invariant form in the transverse momentum subspace. The analyticity and factorization constraints allow us to reproduce the two-loop correction to the 6-point BDS amplitude in N=4 SUSY obtained earlier in the leading logarithmic approximation with the use of the s-channel unitarity. The exponentiation hypothesis for the remainder function in the multi-Regge kinematics is also investigated. The 6-point amplitude in LLA can be completely reproduced from the BDS ansatz with the use of the analyticity and Regge factorization.

  14. High-pressure mechanical and sonic properties of a Devonian shale from West Virginia

    SciTech Connect (OSTI)

    Heard, H.C.; Lin, W.

    1986-01-01T23:59:59.000Z

    Static mechanical properties and sonic velocities were determined on each of four members of the Devonian shale from Columbia Gas Transmission's well 20403, Huntington, West Virginia. They were: Pressure - volume data to 4.0 GPa; Compressive strength at confining pressures up to 300 MPa, both parallel and perpendicular to bedding. Extensile strength at 100 to 700 MPa confining pressure, both parallel and perpendicular to bedding. Loading and unloading path in uniaxial strain at 20 to 500 MPa confining pressure, both parallel and perpendicular to bedding. Tensile strength at ambient pressure, parallel and perpendicular to bedding. Shear and compressional wave velocities at confining pressures up to 1000 MPa parallel, at 45/sup 0/, and perpendicular to bedding. Results are presented and discussed. 32 refs., 10 figs., 10 tabs.

  15. POST-IRRADIATION PROPERTIES OF CANDIDATE MATERIALS FOR HIGH-POWER TARGETS

    E-Print Network [OSTI]

    McDonald, Kirk

    materials with high strength (AlBeMet, beryllium, Ti-V6-Al4) or low CTE (a carbon- carbon composite, a new capacity, and the fracture toughness of these materials. THE IRRADIATED MATERIALS Carbon-carbon composite that a carbon-carbon (CC)-composite with a 3-D weave, designed for very low coefficient of ther- hkirk

  16. Studies on the isolation and properties of the highly unsaturated fatty acids from natural sources

    E-Print Network [OSTI]

    Abu-Nasr, Ahmed Mostafa

    1953-01-01T23:59:59.000Z

    Adrenal Lipids ? ??. 6m Rapid Concentration of Polyunsaturated Methyl and Ethyl Esters of Cod Liver Oil by Urea Complexes . o ? C. CONCENTRATION BY LOW TEMPERATURE CRYSTALLIZATION . . . . \\ IV. ISOLATION OF INDIVIDUAL HIGHLY UNSATURATED FATTY ACIDS... octadecatetraenoate by elution ? 0 ? . . . Ill b. Methyl arachidonate from beef testes fat by elution............................... . 115 5. Effect of Vacuum Distillation on the Polyunsaturated Fatty Acids ? ? ? ? . ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 117 6...

  17. Risk-based systems analysis of emerging high-level waste tank remediation technologies. Volume 2: Final report

    SciTech Connect (OSTI)

    Peters, B.B.; Cameron, R.J.; McCormack, W.D. [Enserch Environmental Corp., Richland, WA (United States)

    1994-08-01T23:59:59.000Z

    The objective of DOE`s Radioactive Waste Tank Remediation Technology Focus Area is to identify and develop new technologies that will reduce the risk and/or cost of remediating DOE underground waste storage tanks and tank contents. There are, however, many more technology investment opportunities than the current budget can support. Current technology development selection methods evaluate new technologies in isolation from other components of an overall tank waste remediation system. This report describes a System Analysis Model developed under the US Department of Energy (DOE) Office of Technology Development (OTD) Underground Storage Tank-Integrated Demonstration (UST-ID) program. The report identifies the project objectives and provides a description of the model. Development of the first ``demonstration`` version of this model and a trial application have been completed and the results are presented. This model will continue to evolve as it undergoes additional user review and testing.

  18. Pelvic Nodal Radiotherapy in Patients With Unfavorable Intermediate and High-Risk Prostate Cancer: Evidence, Rationale, and Future Directions

    SciTech Connect (OSTI)

    Morikawa, Lisa K. [The University of Texas, M. D. Anderson Cancer Center (United States); Memorial Sloan-Kettering Cancer Center (United States); Roach, Mack, E-mail: mroach@radonc.ucsf.ed [University of California San Francisco (UCSF), Helen Diller Family Comprehensive Cancer Center (United States)

    2011-05-01T23:59:59.000Z

    Over the past 15 years, there have been three major advances in the use of external beam radiotherapy in the management of men with clinically localized prostate made. They include: (1) image guided (IG) three-dimensional conformal/intensity modulated radiotherapy; (2) radiation dose escalation; and (3) androgen deprivation therapy. To date only the last of these three advances have been shown to improve overall survival. The presence of occult pelvic nodal involvement could explain the failure of increased conformality and dose escalation to prolong survival, because the men who appear to be at the greatest risk of death from clinically localized prostate cancer are those who are likely to have lymph node metastases. This review discusses the evidence for prophylactic pelvic nodal radiotherapy, including the key trials and controversies surrounding this issue.

  19. Pathways and barriers to genetic testing and screening: Molecular genetics meets the high-risk family. Final report

    SciTech Connect (OSTI)

    Duster, T.

    1998-11-01T23:59:59.000Z

    The proliferation of genetic screening and testing is requiring increasing numbers of Americans to integrate genetic knowledge and interventions into their family life and personal experience. This study examines the social processes that occur as families at risk for two of the most common autosomal recessive diseases, sickle cell disease (SC) and cystic fibrosis (CF), encounter genetic testing. Each of these diseases is found primarily in a different ethnic/racial group (CF in Americans of North European descent and SC in Americans of West African descent). This has permitted them to have a certain additional lens on the role of culture in integrating genetic testing into family life and reproductive planning. A third type of genetic disorder, the thalassemias was added to the sample in order to extent the comparative frame and to include other ethnic and racial groups.

  20. High-frequency electromagnetic properties of epitaxial Bi2FeCrO6 thin films grown by pulsed laser deposition

    E-Print Network [OSTI]

    High-frequency electromagnetic properties of epitaxial Bi2FeCrO6 thin films grown by pulsed laser on the electromagnetic (EM) properties in high-frequency domain (HF) of multiferroic Bi2FeCrO6 (BFCO) thin films. The films were epitaxially grown on SrTiO3 substrates by pulsed laser ablation. Typical 50 nm-thick BFCO

  1. Properties of molecular solids and fluids at high pressure and temperatures

    SciTech Connect (OSTI)

    Etters, R.D.

    1992-03-01T23:59:59.000Z

    This renewal request for DOE grant DE-FG02-86ER45238, is dedicated to providing a complete thermodynamic profile of solids fluids, and fluid mixtures, over a wide range of temperatures and pressures. We are partially motivated by technological interest in detonation, combustion, superhard high pressure materials, and high temperature superconductors, which are important components of interest of various DOE laboratories. Our work on fluids and solids, composed of simple molecules, involves the determination of structures, phase transitions, pressure-volume relations, phonon, vibron, and libron modes of excitation, sound velocities, specific heats, thermal expansion, virial coefficients, sublimation energies, and orientational translational, and magnetic correlations. We hope that the study of these systems under extreme thermodynamic conditions will lead to exotic new materials of value, as well as enhanced fundamental understanding.

  2. Ceramic membranes for catalytic membrane reactors with high ionic conductivities and low expansion properties

    DOE Patents [OSTI]

    Mackay, Richard (Lafayette, CO); Sammells, Anthony F. (Boulder, CO)

    2000-01-01T23:59:59.000Z

    Ceramics of the composition: Ln.sub.x Sr.sub.2-x-y Ca.sub.y B.sub.z M.sub.2-z O.sub.5+.delta. where Ln is an element selected from the fblock lanthanide elements and yttrium or mixtures thereof; B is an element selected from Al, Ga, In or mixtures thereof; M is a d-block transition element of mixtures thereof; 0.01.ltoreq.x.ltoreq.1.0; 0.01.ltoreq.y.ltoreq.0.7; 0.01.ltoreq.z.ltoreq.1.0 and .delta. is a number that varies to maintain charge neutrality are provided. These ceramics are useful in ceramic membranes and exhibit high ionic conductivity, high chemical stability under catalytic membrane reactor conditions and low coefficients of expansion. The materials of the invention are particularly useful in producing synthesis gas.

  3. Intra-Cavity Total Reflection For High Sensitivity Measurement Of Optical Properties

    DOE Patents [OSTI]

    Pipino, Andrew C. R. (Gaithersburg, MD); Hudgens, Jeffrey W. (Rockville, MD)

    1999-08-24T23:59:59.000Z

    An optical cavity resonator device is provided for conducting sensitive murement of optical absorption by matter in any state with diffraction-limited spatial resolution through utilization of total internal reflection within a high-Q (high quality, low loss) optical cavity. Intracavity total reflection generates an evanescent wave that decays exponentially in space at a point external to the cavity, thereby providing a localized region where absorbing materials can be sensitively probed through alteration of the Q-factor of the otherwise isolated cavity. When a laser pulse is injected into the cavity and passes through the evanescent state, an amplitude loss resulting from absorption is incurred that reduces the lifetime of the pulse in the cavity. By monitoring the decay of the injected pulse, the absorption coefficient of manner within the evanescent wave region is accurately obtained from the decay time measurement.

  4. Intra-Cavity Total Reflection For High Sensitivity Measurement Of Optical Properties

    DOE Patents [OSTI]

    Pipino, Andrew Charles Rule (Gaithersburg, MD)

    1999-11-16T23:59:59.000Z

    An optical cavity resonator device is provided for conducting sensitive murement of optical absorption by matter in any state with diffraction-limited spatial resolution through utilization of total internal reflection within a high-Q (high quality, low loss) optical cavity. Intracavity total reflection generates an evanescent wave that decays exponentially in space at a point external to the cavity, thereby providing a localized region where absorbing materials can be sensitively probed through alteration of the Q-factor of the otherwise isolated cavity. When a laser pulse is injected into the cavity and passes through the evanescent state, an amplitude loss resulting from absorption is incurred that reduces the lifetime of the pulse in the cavity. By monitoring the decay of the injected pulse, the absorption coefficient of manner within the evanescent wave region is accurately obtained from the decay time measurement.

  5. Systematics of Kinetic Freeze-out Properties in High Energy Collisions from STAR

    E-Print Network [OSTI]

    Lokesh Kumar

    2014-08-19T23:59:59.000Z

    The main aim of the RHIC Beam Energy Scan (BES) program is to explore the QCD phase diagram which includes search for a possible QCD critical point and the phase boundary between QGP and hadronic phase. We report the collision energy and centrality dependence of kinetic freeze-out properties from the measured mid-rapidity ($|y|energy $\\sqrt{s_{NN}} =$ 7.7, 11.5, 19.6, 27, and 39 GeV. The STAR detector, with a large uniform acceptance and excellent particle identification is used in the data collection and analysis. The kinetic freeze-out temperature $T_{\\rm{kin}}$ and average collective velocity $\\langle \\beta \\rangle$ parameters are extracted from blast-wave fits to the identified hadron spectra and systematically compared with the results from other collision energies including those at AGS, SPS and LHC. It is found that all results fall into an anti-correlation band in the 2-dimension ($T_{\\rm{kin}}$, $\\langle \\beta \\rangle$) distribution: the largest value of collective velocity and lowest temperature is reached in the most central collisions at the highest collision energy. The energy dependence of these freeze-out parameters are discussed.

  6. Application of a systems-theoretic approach to risk analysis of high-speed rail project management in the US

    E-Print Network [OSTI]

    Kawakami, Soshi

    2014-01-01T23:59:59.000Z

    High-speed rail (HSR) is drawing attention as an environmentally-friendly transportation mode, and is expected to be a solution for socio-technical transportation issues in many societies. Currently, its market has been ...

  7. A TRANSPORTATION RISK ASSESSMENT TOOL FOR ANALYZING THE TRANSPORT OF SPENT NUCLEAR FUEL AND HIGH-LEVEL RADIOACTIVE WASTE TO THE PROPOSED YUCCA MOUNTAIN REPOSITORY

    SciTech Connect (OSTI)

    NA

    2001-02-15T23:59:59.000Z

    The Yucca Mountain Draft Environmental Impact Statement (DEIS) analysis addressed the potential for transporting spent nuclear fuel and high-level radioactive waste from 77 origins for 34 types of spent fuel and high-level radioactive waste, 49,914 legal weight truck shipments, and 10,911 rail shipments. The analysis evaluated transportation over 59,250 unique shipment links for travel outside Nevada (shipment segments in urban, suburban or rural zones by state), and 22,611 links in Nevada. In addition, the analysis modeled the behavior of 41 isotopes, 1091 source terms, and used 8850 food transfer factors (distinct factors by isotope for each state). The analysis also used mode-specific accident rates for legal weight truck, rail, and heavy haul truck by state, and barge by waterway. This complex mix of data and information required an innovative approach to assess the transportation impacts. The approach employed a Microsoft{reg_sign} Access database tool that incorporated data from many sources, including unit risk factors calculated using the RADTRAN IV transportation risk assessment computer program. Using Microsoft{reg_sign} Access, the analysts organized data (such as state-specific accident and fatality rates) into tables and developed queries to obtain the overall transportation impacts. Queries are instructions to the database describing how to use data contained in the database tables. While a query might be applied to thousands of table entries, there is only one sequence of queries that is used to calculate a particular transportation impact. For example, the incident-free dose to off-link populations in a state is calculated by a query that uses route segment lengths for each route in a state that could be used by shipments, populations for each segment, number of shipments on each segment, and an incident-free unit risk factor calculated using RADTRAN IV. In addition to providing a method for using large volumes of data in the calculations, the queries provide a straight-forward means used to verify results. Another advantage of using the MS Access database was the ability to develop query hierarchies using nested queries. Calculations were broken into a series of steps, each step represented by a query. For example, the first query might calculate the number of shipment kilometers traveled through urban, rural and suburban zones for all states. Subsequent queries could join the shipment kilometers query results with another table containing unit risk factors calculated using RADTRAN IV to produce radiological impacts. Through the use of queries, impacts by origin, mode, fuel type or many other parameters can be obtained. The paper will show both the flexibility of the assessment tool and the ease it provides for verifying results.

  8. A Transportation Risk Assessment Tool for Analyzing the Transport of Spent Nuclear Fuel and High-Level Radioactive Waste to the Proposed Yucca Mountain Repository

    SciTech Connect (OSTI)

    Ralph Best; T. Winnard; S. Ross; R. Best

    2001-08-17T23:59:59.000Z

    The Yucca Mountain Transportation Database was developed as a data management tool for assembling and integrating data from multiple sources to compile the potential transportation impacts presented in the Draft Environmental Impact Statement for a Geologic Repository for the Disposal of Spent Nuclear Fuel and High-Level Radioactive Waste at Yucca Mountain, Nye County, Nevada (DEIS). The database uses the results from existing models and codes such as RADTRAN, RISKIND, INTERLINE, and HIGHWAY to estimate transportation-related impacts of transporting spent nuclear fuel and high-level radioactive waste from commercial reactors and U. S. Department of Energy (DOE) facilities to Yucca Mountain. The source tables in the database are compendiums of information from many diverse sources including: radionuclide quantities for each waste type; route and route characteristics for rail, legal-weight truck, heavy haul. truck, and barge transport options; state-specific accident and fatality rates for routes selected for analysis; packaging and shipment data by waste type; unit risk factors; the complex behavior of the packaged waste forms in severe transport accidents; and the effects of exposure to radiation or the isotopic specific effects of radionclides should they be released in severe transportation accidents. The database works together with the codes RADTRAN (Neuhauser, et al, 1994) and RISKlND (Yuan, et al, 1995) to calculate incident-free dose and accident risk. For the incident-free transportation scenario, the database uses RADTRAN and RISKIND-generated data to calculate doses to offlink populations, onlink populations, people at stops, crews, inspectors, workers at intermodal transfer stations, guards at overnight stops, and escorts, as well as non-radioactive pollution health effects. For accident scenarios, the database uses RADTRAN-generated data to calculate dose risks based on ingestion, inhalation, resuspension, immersion (cloudshine), and groundshine as well as non-radioactive traffic fatalities. The Yucca Mountain EIS Transportation Database was developed using Microsoft Access 97{trademark} software and the Microsoft Windows NT{trademark} operating system. The database consists of tables for storing data, forms for selecting data for querying, and queries for retrieving the data in a predefined format. Database queries retrieve records based on input parameters and are used to calculate incident-free and accident doses using unit risk factors obtained from RADTRAN results. The next section briefly provides some background that led to the development of the database approach used in preparing the Yucca Mountain DEIS. Subsequent sections provide additional details on the database structure and types of impacts calculated using the database.

  9. High Level Computational Chemistry Approaches to the Prediction of Energetic Properties of Chemical Hydrogen Storage Systems

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport(Fact Sheet), GeothermalGridHYDROGEN TOTechnologyHigh Efficiency LowDepartment

  10. When the facts are just not enough: Credibly communicating about risk is riskier when emotions run high and time is short

    SciTech Connect (OSTI)

    Reynolds, Barbara J., E-mail: Bsr0@cdc.gov

    2011-07-15T23:59:59.000Z

    When discussing risk with people, commonly subject matter experts believe that conveying the facts will be enough to allow people to assess a risk and respond rationally to that risk. Because of this expectation, experts often become exasperated by the seemingly illogical way people assess personal risk and choose to manage that risk. In crisis situations when the risk information is less defined and choices must be made within impossible time constraints, the thought processes may be even more susceptible to faulty heuristics. Understanding the perception of risk is essential to understanding why the public becomes more or less upset by events. This article explores the psychological underpinnings of risk assessment within emotionally laden events and the risk communication practices that may facilitate subject matter experts to provide the facts in a manner so they can be more certain those facts are being heard. Source credibility is foundational to risk communication practices. The public meeting is one example in which these best practices can be exercised. Risks are risky because risk perceptions differ and the psychosocial environment in which risk is discussed complicates making risk decisions. Experts who want to influence the actions of the public related to a threat or risk should understand that decisions often involve emotional as well as logical components. The media and other social entities will also influence the risk context. The Center for Disease Control and Prevention's crisis and emergency-risk communication (CERC) principles are intended to increase credibility and recognize emotional components of an event. During a risk event, CERC works to calm emotions and increase trust which can help people apply the expertise being offered by response officials.

  11. Ultra high pressure liquid chromatography column permeability and changes of the eluent properties

    SciTech Connect (OSTI)

    Gritti, Fabrice [University of Tennessee, Knoxville (UTK); Guiochon, Georges A [ORNL

    2008-01-01T23:59:59.000Z

    The behavior of four similar liquid chromatography columns (2.1 mm i.d. x30, 50, 100, and 150 mm, all packed with fine particles, average d{sub p} {approx} 1.7 {micro}m, of bridged ethylsiloxane/silica hybrid-C{sub 18}, named BEH-C{sub 18}) was studied in wide ranges of temperature and pressure. The pressure and the temperature dependencies of the viscosity and the density of the eluent (pure acetonitrile) along the columns were also derived, using the column permeabilities and applying the Kozeny-Carman and the heat balance equations. The heat lost through the external surface area of the chromatographic column was directly derived from the wall temperature of the stainless steel tube measured with a precision of C in still air and C in the oven compartment. The variations of the density and viscosity of pure acetonitrile as a function of the temperature and pressure was derived from empirical correlations based on precise experimental data acquired between 298 and 373 K and at pressures up to 1.5 kbar. The measurements were made with the Acquity UPLC chromatograph that can deliver a maximum flow rate of 2 mL/min and apply a maximum column inlet pressure of 1038 bar. The average Kozeny-Carman permeability constant of the columns was 144 {+-} 3.5%. The temperature hence the viscosity and the density profiles of the eluent along the column deviate significantly from linear behavior under high-pressure gradients. For a 1000 bar pressure drop, we measured {Delta}T = 25-30 K, ({Delta}{eta}/{eta}) {approx_equal} 100%, and ({Delta}{rho}/{rho}) {approx_equal} 10%. These results show that the radial temperature profiles are never fully developed within 1% for any of the columns, even under still-air conditions. This represents a practical advantage regarding the apparent column efficiency at high flow rates, since the impact of the differential analyte velocity between the column center and the column wall is not maximum. The interpretation of the peak profiles recorded in UPLC is discussed.

  12. Magnetocaloric properties and critical behavior of high relative cooling power FeNiB nanoparticles

    SciTech Connect (OSTI)

    Chaudhary, V. [Interdisciplinary Graduate School, Nanyang Technological University, Singapore 639798 (Singapore); Energy Research Institute @NTU, Nanyang Technological University, Singapore 637553 (Singapore); School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798 (Singapore); Maheswar Repaka, D. V.; Chaturvedi, A.; Ramanujan, R. V., E-mail: ramanujan@ntu.edu.sg [School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798 (Singapore); Sridhar, I. [School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore 639798 (Singapore)

    2014-10-28T23:59:59.000Z

    Low cost magnetocaloric nanomaterials have attracted considerable attention for energy efficient applications. We report a very high relative cooling power (RCP) in a study of the magnetocaloric effect in quenched FeNiB nanoparticles. RCP increases from 89.8 to 640?J kg{sup ?1} for a field change of 1 and 5?T, respectively, these values are the largest for rare earth free iron based magnetocaloric nanomaterials. To investigate the magnetocaloric behavior around the Curie temperature (T{sub C}), the critical behavior of these quenched nanoparticles was studied. Detailed analysis of the magnetic phase transition using the modified Arrott plot, Kouvel-Fisher method, and critical isotherm plots yields critical exponents of ??=?0.364, ??=?1.319, ??=?4.623, and ??=??0.055, which are close to the theoretical exponents obtained from the 3D-Heisenberg model. Our results indicate that these FeNiB nanoparticles are potential candidates for magnetocaloric fluid based heat pumps and low grade waste heat recovery.

  13. GRB 120521C at z ? 6 and the properties of high-redshift ?-ray bursts

    SciTech Connect (OSTI)

    Laskar, Tanmoy; Berger, Edo; Zauderer, B. Ashley; Margutti, Raffaella; Fong, Wen-fai [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Tanvir, Nial; Wiersema, Klaas [Department of Physics and Astronomy, University of Leicester, University Road, Leicester LE1 7RH (United Kingdom); Levan, Andrew [Department of Physics, University of Warwick, Coventry CV4 7AL (United Kingdom); Perley, Daniel [Department of Astronomy, California Institute of Technology, MC 249-17, 1200 East California Boulevard, Pasadena, CA 91125 (United States); Menten, Karl [Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, D-53121 Bonn (Germany); Hrudkova, Marie [Isaac Newton Group of Telescopes, Apartado de Correos 321, E-387 00 Santa Cruz de la Palma, Canary Islands (Spain)

    2014-01-20T23:59:59.000Z

    We present optical, near-infrared, and radio observations of the afterglow of GRB 120521C. By modeling the multi-wavelength data set, we derive a photometric redshift of z ? 6.0, which we confirm with a low signal-to-noise ratio spectrum of the afterglow. We find that a model with a constant-density environment provides a good fit to the afterglow data, with an inferred density of n ? 0.05 cm{sup –3}. The radio observations reveal the presence of a jet break at t {sub jet} ? 7 d, corresponding to a jet opening angle of ?{sub jet} ? 3°. The beaming-corrected ?-ray and kinetic energies are E {sub ?} ? E{sub K} ? 3 × 10{sup 50} erg. We quantify the uncertainties in our results using a detailed Markov Chain Monte Carlo analysis, which allows us to uncover degeneracies between the physical parameters of the explosion. To compare GRB 120521C to other high-redshift bursts in a uniform manner we re-fit all available afterglow data for the two other bursts at z ? 6 with radio detections (GRBs 050904 and 090423). We find a jet break at t {sub jet} ? 15 d for GRB 090423, in contrast to previous work. Based on these three events, we find that ?-ray bursts (GRBs) at z ? 6 appear to explode in constant-density environments, and exhibit a wide range of energies and densities that span the range inferred for lower redshift bursts. On the other hand, we find a hint for narrower jets in the z ? 6 bursts, potentially indicating a larger true event rate at these redshifts. Overall, our results indicate that long GRBs share a common progenitor population at least to z ? 8.

  14. Quantitative Risk Management Rudiger Frey

    E-Print Network [OSTI]

    Frey, Rüdiger

    Lecture Quantitative Risk Management R¨udiger Frey Universit¨at Leipzig Wintersemester 2010 risk management C. Introduction to Portfolio Credit Derivatives c 2010 (Frey) 1 #12;A. Introduction of counterparties. Measuring and management of credit risk is of high importance for financial institutions

  15. Evaluation of the dosimetric properties of a synthetic single crystal diamond detector in high energy clinical proton beams

    SciTech Connect (OSTI)

    Mandapaka, A. K.; Ghebremedhin, A.; Patyal, B. [Department of Radiation Medicine, Loma Linda University Medical Center, 11234 Anderson Street, Loma Linda, California 92354 (United States)] [Department of Radiation Medicine, Loma Linda University Medical Center, 11234 Anderson Street, Loma Linda, California 92354 (United States); Marinelli, Marco; Prestopino, G.; Verona, C.; Verona-Rinati, G. [INFN–Dipartimento di Ingegneria Industriale, Università di Roma ‘Tor Vergata’, Via del Politecnico 1, 00133 Roma (Italy)] [INFN–Dipartimento di Ingegneria Industriale, Università di Roma ‘Tor Vergata’, Via del Politecnico 1, 00133 Roma (Italy)

    2013-12-15T23:59:59.000Z

    Purpose: To investigate the dosimetric properties of a synthetic single crystal diamond Schottky diode for accurate relative dose measurements in large and small field high-energy clinical proton beams.Methods: The dosimetric properties of a synthetic single crystal diamond detector were assessed by comparison with a reference Markus parallel plate ionization chamber, an Exradin A16 microionization chamber, and Exradin T1a ion chamber. The diamond detector was operated at zero bias voltage at all times. Comparative dose distribution measurements were performed by means of Fractional depth dose curves and lateral beam profiles in clinical proton beams of energies 155 and 250 MeV for a 14 cm square cerrobend aperture and 126 MeV for 3, 2, and 1 cm diameter circular brass collimators. ICRU Report No. 78 recommended beam parameters were used to compare fractional depth dose curves and beam profiles obtained using the diamond detector and the reference ionization chamber. Warm-up/stability of the detector response and linearity with dose were evaluated in a 250 MeV proton beam and dose rate dependence was evaluated in a 126 MeV proton beam. Stem effect and the azimuthal angle dependence of the diode response were also evaluated.Results: A maximum deviation in diamond detector signal from the average reading of less than 0.5% was found during the warm-up irradiation procedure. The detector response showed a good linear behavior as a function of dose with observed deviations below 0.5% over a dose range from 50 to 500 cGy. The detector response was dose rate independent, with deviations below 0.5% in the investigated dose rates ranging from 85 to 300 cGy/min. Stem effect and azimuthal angle dependence of the diode signal were within 0.5%. Fractional depth dose curves and lateral beam profiles obtained with the diamond detector were in good agreement with those measured using reference dosimeters.Conclusions: The observed dosimetric properties of the synthetic single crystal diamond detector indicate that its behavior is proton energy independent and dose rate independent in the investigated energy and dose rate range and it is suitable for accurate relative dosimetric measurements in large as well as in small field high energy clinical proton beams.

  16. Toxicity Assessment of Pelvic Intensity-Modulated Radiotherapy With Hypofractionated Simultaneous Integrated Boost to Prostate for Intermediate- and High-Risk Prostate Cancer

    SciTech Connect (OSTI)

    McCammon, Robert; Rusthoven, Kyle E.; Kavanagh, Brian; Newell, Sherri B.S.; Newman, Francis M.S. [Department of Radiation Oncology, University of Colorado Denver, Aurora, CO (United States); Raben, David [Department of Radiation Oncology, University of Colorado Denver, Aurora, CO (United States)], E-mail: david.raben@uchsc.edu

    2009-10-01T23:59:59.000Z

    Purpose: To evaluate the toxicity of pelvic intensity-modulated radiotherapy (IMRT) with hypofractionated simultaneous integrated boost (SIB) to the prostate for patients with intermediate- to high-risk prostate cancer. Methods and Materials: A retrospective toxicity analysis was performed in 30 consecutive patients treated definitively with pelvic SIB-IMRT, all of whom also received androgen suppression. The IMRT plans were designed to deliver 70 Gy in 28 fractions (2.5 Gy/fraction) to the prostate while simultaneously delivering 50.4 Gy in 28 fractions (1.8 Gy/fraction) to the pelvic lymph nodes. The National Cancer Institute Common Terminology Criteria for Adverse Events, version 3.0, was used to score toxicity. Results: The most common acute Grade 2 events were cystitis (36.7%) and urinary frequency/urgency (26.7%). At a median follow-up of 24 months, late toxicity exceeding Grade 2 in severity was uncommon, with two Grade 3 events and one Grade 4 event. Grade 2 or greater acute bowel toxicity was associated with signficantly greater bowel volume receiving {>=}25 Gy (p = .04); Grade 2 or greater late bowel toxicity was associated with a higher bowel maximal dose (p = .04) and volume receiving {>=}50 Gy (p = .02). Acute or late bladder and rectal toxicity did not correlate with any of the dosimetric parameters examined. Conclusion: Pelvic IMRT with SIB to the prostate was well tolerated in this series, with low rates of Grade 3 or greater acute and late toxicity. SIB-IMRT combines pelvic radiotherapy and hypofractionation to the primary site and offers an accelerated approach to treating intermediate- to high-risk disease. Additional follow-up is necessary to fully define the long-term toxicity after hypofractionated, whole pelvic treatment combined with androgen suppression.

  17. Androgen Deprivation Therapy Does Not Impact Cause-Specific or Overall Survival in High-Risk Prostate Cancer Managed With Brachytherapy and Supplemental External Beam

    SciTech Connect (OSTI)

    Merrick, Gregory S. [Schiffler Cancer Center and Wheeling Jesuit University, Wheeling, WV (United States)]. E-mail: gmerrick@urologicresearchinstitute.org; Butler, Wayne M. [Schiffler Cancer Center and Wheeling Jesuit University, Wheeling, WV (United States); Wallner, Kent E. [Puget Sound Healthcare Corporation, Group Health Cooperative, University of Washington, Seattle, WA (United States); Galbreath, Robert W. [Schiffler Cancer Center and Wheeling Jesuit University, Wheeling, WV (United States); Ohio University Eastern, St. Clairsville, OH (United States); Allen, Zachariah A. [Schiffler Cancer Center and Wheeling Jesuit University, Wheeling, WV (United States); Adamovich, Edward [Department of Pathology, Wheeling Hospital, Wheeling, WV (United States); Lief, Jonathan [Schiffler Cancer Center and Wheeling Jesuit University, Wheeling, WV (United States)

    2007-05-01T23:59:59.000Z

    Purpose: To determine cause-specific survival (CSS), biochemical progression-free survival (bPFS), and overall survival (OS) in high-risk prostate cancer patients undergoing brachytherapy with or without supplemental therapies. Methods and Materials: Between April 1995 and July 2002, 204 patients with high-risk prostate cancer (Gleason score {>=}8 or prostate-specific antigen [PSA] >20 ng/mL or clinical stage {>=}T2c) underwent brachytherapy. Median follow-up was 7.0 years. The bPFS was defined by a PSA {<=}0.40 ng/mL after nadir. Multiple clinical, treatment, and dosimetric parameters were evaluated for the impact on survival. Results: The 10-year CSS, bPFS, and OS were 88.9%, 86.6%, and 68.6%, respectively. A statistically significant difference in bPFS was discerned between hormone naive, ADT {<=}6 months, and ADT >6 month cohorts (79.7% vs. 95.% vs. 89.9%, p = 0.032). Androgen deprivation therapy (ADT) did not impact CSS or OS. For bPFS patients, the median posttreatment PSA was <0.04 ng/mL. A Cox linear regression analysis demonstrated that Gleason score was the best predictor of CSS, whereas percent positive biopsies and duration of ADT best predicted for bPFS. The OS was best predicted by Gleason score and diabetes. Thirty-eight patients have died, with 26 of the deaths from cardiovascular/pulmonary disease or second malignancy. Eleven patients have died of metastatic prostate cancer. Conclusions: The ADT improved 10-year bPFS without statistical impact on CSS or OS. Death as a result of cardiovascular/pulmonary disease and second malignancies were more than twice as common as prostate cancer deaths. Strategies to improve cardiovascular health should positively impact OS.

  18. Structure and high-temperature properties of Ti{sub 5}Si{sub 3} with interstitial additions

    SciTech Connect (OSTI)

    Williams, Jason

    1999-12-01T23:59:59.000Z

    This study was motivated by the fact that previous research on the structure and properties of Ti{sub 5}Si{sub 3} showed unacceptably inconsistent results. The primary reason for these inconsistencies was interstitial contamination of Ti{sub 5}Si{sub 3} by carbon, nitrogen and oxygen. Thus, this study measured the effects that these interstitial atoms have on some of the previously reported properties. These properties include crystalline structure, thermal expansion anisotropy, electronic structure and bonding, and high temperature oxidation resistance. In Chapter 2 of this study, the lattice parameters and atomic positions of Ti{sub 5}Si{sub 3} as a function of carbon, nitrogen or oxygen content were measured via x-ray and neutron diffraction. Comparing these lattice parameters to those reported in other studies on supposedly pure Ti{sub 5}Si{sub 3} confirmed that the majority of the previous studies had samples with a considerable amount of interstitial impurities. In fact, the lattice parameter trends given in Chapter 2 can be used to estimate the types and level of impurities in these studies. Furthermore, Chapter 2 discusses how atomic positions change as interstitial atoms are incorporated into the lattice. These changes in atomic separations suggest that strong bonds form between the interstitial atoms and the surrounding titanium atoms. This is in full agreement with the electronic structure calculations given in Chapter 4. These calculations show that bonding does occur between titanium d-states and interstitial atom p-states at the expense of bonding between some of the titanium and silicon atoms. In addition, carbon seems to be the most strongly bonded interstitial atom. Knowledge of the exact interstitial content and its effect on bonding is important because Chapters 3 and 5 have shown that interstitial atoms have a marked effect on the thermal expansion and oxidation resistance. As discussed in Chapter 3, all interstitial atoms lower the thermal expansion anisotropy of Ti{sub 5}Si{sub 3} due to the formation of bonds between the interstitial atom and the surrounding titanium atoms. Although interstitial atoms do have an effect on the thermal expansion of Ti{sub 5}Si{sub 3}, these effects were not strong enough to explain all the scatter of previous studies. These studies most likely suffered from systematic errors as a result of poor experimental design. The experimental procedure used in this study was designed to significantly reduce these systematic errors.

  19. High-Dose-Rate Brachytherapy and External-Beam Radiotherapy for Hormone-Naieve Low- and Intermediate-Risk Prostate Cancer: A 7-Year Experience

    SciTech Connect (OSTI)

    Aluwini, Shafak, E-mail: s.aluwini@erasmusmc.nl [Department of Radiation Oncology, Erasmus MC, Daniel den Hoed Cancer Center, Rotterdam (Netherlands)] [Department of Radiation Oncology, Erasmus MC, Daniel den Hoed Cancer Center, Rotterdam (Netherlands); Rooij, Peter H. van [Department of Radiation Oncology, Erasmus MC, Daniel den Hoed Cancer Center, Rotterdam (Netherlands)] [Department of Radiation Oncology, Erasmus MC, Daniel den Hoed Cancer Center, Rotterdam (Netherlands); Kirkels, Wim J. [Department of Urology, Erasmus MC, Daniel den Hoed Cancer Center, Rotterdam (Netherlands)] [Department of Urology, Erasmus MC, Daniel den Hoed Cancer Center, Rotterdam (Netherlands); Jansen, Peter P.; Praag, John O. [Department of Radiation Oncology, Erasmus MC, Daniel den Hoed Cancer Center, Rotterdam (Netherlands)] [Department of Radiation Oncology, Erasmus MC, Daniel den Hoed Cancer Center, Rotterdam (Netherlands); Bangma, Chris H. [Department of Urology, Erasmus MC, Daniel den Hoed Cancer Center, Rotterdam (Netherlands)] [Department of Urology, Erasmus MC, Daniel den Hoed Cancer Center, Rotterdam (Netherlands); Kolkman-Deurloo, Inger-Karine K. [Department of Radiation Oncology, Erasmus MC, Daniel den Hoed Cancer Center, Rotterdam (Netherlands)] [Department of Radiation Oncology, Erasmus MC, Daniel den Hoed Cancer Center, Rotterdam (Netherlands)

    2012-08-01T23:59:59.000Z

    Purpose: To report clinical outcomes and early and late complications in 264 hormone-naieve patients with low- and intermediate-risk prostate cancer treated with high-dose-rate brachytherapy (HDR-BT) in combination with external-beam radiotherapy (EBRT). Methods and Materials: Between February 2000 and July 2007, 264 patients underwent HDR-BT in combination with EBRT as a treatment for their low- to intermediate-risk prostate cancer. The HDR-BT was performed using ultrasound-based implantation. The total HDR-BT dose was 18 Gy in 3 fractions within 24 h, with a 6-h minimum interval. The EBRT started 2 weeks after HDR-BT and was delivered in 25 fractions of 1.8 Gy to 45 Gy within 5 weeks. Results: After a mean follow-up of 74.5 months, 4 patients (1.5%) showed prostate-specific antigen progression according to the American Society for Radiation Oncology definition and 8 patients (3%) according to the Phoenix definition. A biopsy-proven local recurrence was registered in 1 patient (0.4%), and clinical progression (bone metastases) was documented in 2 patients (0.7%). Seven-year actuarial freedom from biochemical failure was 97%, and 7-year disease-specific survival and overall survival were 100% and 91%, respectively. Toxicities were comparable to other series. Conclusions: Treatment with interstitial HDR-BT plus EBRT shows a low incidence of late complications and a favorable oncologic outcome after 7 years follow-up.

  20. RISK MANAGEMENT HANDBOOK The UNIVERSITY of VERMONT

    E-Print Network [OSTI]

    Hayden, Nancy J.

    RISK MANAGEMENT HANDBOOK UVM PEOPLE WORKING 2004 The UNIVERSITY of VERMONT #12;2 © 2004 University · Fire and Life Safety · Property Protection · Vehicle Safety · Liability Risk Management · Insurance & Claims Management RISK MANAGEMENT HANDBOOKThe UNIVERSITY of VERMONT #12;4 © 2004 University of Vermont

  1. Retrospective Evaluation Reveals That Long-term Androgen Deprivation Therapy Improves Cause-Specific and Overall Survival in the Setting of Dose-Escalated Radiation for High-Risk Prostate Cancer

    SciTech Connect (OSTI)

    Feng, Felix Y., E-mail: ffeng@med.umich.edu [Department of Radiation Oncology, University of Michigan, Ann Arbor, Michigan (United States); Department of Radiation Oncology, Veterans Affairs Medical Center, Ann Arbor, Michigan (United States); Blas, Kevin; Olson, Karin; Stenmark, Matthew [Department of Radiation Oncology, University of Michigan, Ann Arbor, Michigan (United States)] [Department of Radiation Oncology, University of Michigan, Ann Arbor, Michigan (United States); Sandler, Howard [Cedars Sinai Medical Center, Los Angeles, California (United States)] [Cedars Sinai Medical Center, Los Angeles, California (United States); Hamstra, Daniel A. [Department of Radiation Oncology, University of Michigan, Ann Arbor, Michigan (United States)] [Department of Radiation Oncology, University of Michigan, Ann Arbor, Michigan (United States)

    2013-05-01T23:59:59.000Z

    Purpose: To evaluate the role of androgen deprivation therapy (ADT) and duration for high-risk prostate cancer patients treated with dose-escalated radiation therapy (RT). Methods and Materials: A retrospective analysis of high-risk prostate cancer patients treated with dose-escalated RT (minimum 75 Gy) with or without ADT was performed. The relationship between ADT use and duration with biochemical failure (BF), metastatic failure (MF), prostate cancer-specific mortality (PCSM), non-prostate cancer death (NPCD), and overall survival (OS) was assessed as a function of pretreatment characteristics, comorbid medical illness, and treatment using Fine and Gray's cumulative incidence methodology. Results: The median follow-up time was 64 months. In men with National Comprehensive Cancer Network defined high-risk prostate cancer treated with dose-escalated RT, on univariate analysis, both metastasis (P<.0001; hazard ratio 0.34; 95% confidence interval 0.18-0.67; cumulative incidence at 60 months 13% vs 35%) and PCSM (P=.015; hazard ratio 0.41; 95% confidence interval 0.2-1.0; cumulative incidence at 60 months 6% vs 11%) were improved with the use of ADT. On multivariate analysis for all high-risk patients, Gleason score was the strongest negative prognostic factor, and long-term ADT (LTAD) improved MF (P=.002), PCSM (P=.034), and OS (P=.001). In men with prostate cancer and Gleason scores 8 to 10, on multivariate analysis after adjustment for other risk features, there was a duration-dependent improvement in BF, metastasis, PCSM, and OS, all favoring LTAD in comparison with STAD or RT alone. Conclusion: For men with high-risk prostate cancer treated with dose-escalated EBRT, this retrospective study suggests that the combination of LTAD and RT provided a significant improvement in clinical outcome, which was especially true for those with Gleason scores of 8 to 10.

  2. Spectral and variability properties of LS 5039 from radio to very high-energy gamma-rays

    E-Print Network [OSTI]

    V. Bosch-Ramon; J. M. Paredes; G. E. Romero

    2006-05-19T23:59:59.000Z

    Microquasars are X-ray binaries with relativistic jets. The microquasar LS 5039 turned out to be the first high-energy gamma-ray microquasar candidate due to its likely association with the EGRET source 3EG J1824-1514. Further theoretical studies supported this association, which could be extended to other EGRET sources. Very recently, Aharonian et al. (2005) have communicated the detection of the microquasar LS 5039 at TeV energies. This fact confirms the EGRET source association and leaves no doubt about the gamma-ray emitting nature of this object. The aim of the present work is to show that, applying a cold-matter dominated jet model to LS 5039, we can reproduce many of the spectral and variability features observed in this source. Jet physics is explored, and some physical quantities are estimated as a by-product of the performed modeling. Although at the moment only LS 5039 has been detected on the entire electromagnetic spectrum, it does not seem unlikely that other microquasars will show similar spectral properties. Therefore, an in-depth study of the first gamma-ray microquasar, on theoretical grounds supported by observations, can render a useful knowledge applicable elsewhere.

  3. Preparation and characterization of multi-walled carbon nanotubes with nickel–phosphorous layers of high magnetic properties

    SciTech Connect (OSTI)

    Zhang, Yi, E-mail: zhangyi520love@yahoo.com.cn [Department of Applied Chemistry, School of Science, Northwestern Polytechnical University, Xi’an 710072 (China)] [Department of Applied Chemistry, School of Science, Northwestern Polytechnical University, Xi’an 710072 (China); Qi, Shuhua; Zhang, Fan [Department of Applied Chemistry, School of Science, Northwestern Polytechnical University, Xi’an 710072 (China)] [Department of Applied Chemistry, School of Science, Northwestern Polytechnical University, Xi’an 710072 (China)

    2012-11-15T23:59:59.000Z

    Highlights: ? Impurities in crude MWNTs were effectively removed after purification treatment. ? Many Ni nanoparticles were homogenously coated on the purified MWNTs. ? The saturation magnetization (Ms) of the MWNTs with Ni–P layers is 91.5 emu/g. -- Abstract: The multi-wall carbon nanotubes (MWNTs) with nickel–phosphorous (Ni–P) layers were prepared by electroless plating method. To obtain the MWNTs with Ni–P layers of high magnetic properties, an effective purification treatment and a pre-treatment procedure were developed. The crude MWNTs, the purified MWNTs and the MWNTs with Ni–P layers were characterized by scanning electron microscope (SEM)/energy dispersive spectroscopy (EDS), transmission electron microscope (TEM), X-ray diffraction (XRD) and vibrating sample magnetometer (VSM). SEM results, TEM images and XRD results indicate that impurities in the crude MWNTs were effectively removed after the purification treatment and a large number of Ni nanoparticles were homogenously coated on the surface of the purified MWNTs. According to the VSM test, the saturation magnetization (Ms) of the MWNTs with Ni–P layers is 91.5 emu/g which is higher than results of other researchers.

  4. The Ultraviolet Emission Properties of Five Low-Redshift Active Galactic Nuclei at High Signal to Noise and Spectral Resolution

    E-Print Network [OSTI]

    Ari Laor; John N. Bahcall; Buell T. Jannuzi; Donald P. Schneider; Richard F. Green; George F. Hartig

    1993-05-21T23:59:59.000Z

    We analyze the ultraviolet (UV) emission line and continuum properties of five low-redshift active galactic nuclei (four luminous quasars: PKS~0405$-$123, H1821+643, PG~0953+414, and 3C273, and one bright Seyfert 1 galaxy: Mrk~205). The HST spectra have higher signal-to-noise ratios (typically $\\sim 60$ per resolution element) and spectral resolution ($R = 1300$) than all previously- published UV spectra used to study the emission characteristics of active galactic nuclei. We include in the analysis ground-based optical spectra covering \\hb\\ and the narrow [O III] $\\lambda\\lambda$4959,5007 doublet. The following new results are obtained: \\lyb/\\lya=0.03$-$0.12 for the four quasars, which is the first accurate measurement of the long-predicted \\lyb\\ intensity in QSOs. The cores of \\lya\\ and C~IV are symmetric to an accuracy of better than 2.5% within about 2000 km s$^{-1}$ of the line peak. This high degree of symmetry of \\lya\\ argues against models in which the broad line cloud velocity field has a significant radial component. The observed smoothness of the \\lya\\ and C~IV line profiles requires at least $\\sim 10^4$ individual clouds if bulk velocity is the only line-broadening mechanism. The overall similarity of the \\lya\\ and C IV $\\lambda$1549 profiles rules out models for the broad line region (BLR) with a radial distribution of virialized....

  5. Structural, optical, and magnetic properties of highly-resistive Sm-implanted GaN thin films

    SciTech Connect (OSTI)

    Lo, Fang-Yuh, E-mail: fangyuhlo@ntnu.edu.tw; Huang, Cheng-De; Chou, Kai-Chieh; Guo, Jhong-Yu; Liu, Hsiang-Lin; Chia, Chi-Ta [Department of Physics, National Taiwan Normal University, 11677 Taipei City, Taiwan (China); Ney, Verena; Ney, Andreas [Experimentalphysik, Universität Duisburg-Essen, 47057 Duisburg (Germany); Shvarkov, Stepan; Reuter, Dirk; Wieck, Andreas D. [Lehrstuhl für Angewandte Festkörperphysik, Ruhr-Universität Bochum, 44780 Bochum (Germany); Pezzagna, Sébastien [Lehrstuhl für Angewandte Festkörperphysik, Ruhr-Universität Bochum, 44780 Bochum (Germany); Centre de Recherche sur l'Hétéroépitaxie et ses Application, 06560 Valbonne, UPR-CNRS (France); Chern, Ming-Yau [Department of Physics, National Taiwan University, 10617 Taipei City, Taiwan (China); Massies, Jean [Centre de Recherche sur l'Hétéroépitaxie et ses Application, 06560 Valbonne, UPR-CNRS (France)

    2014-07-28T23:59:59.000Z

    Samarium ions of 200?keV in energy were implanted into highly-resistive molecular-beam-epitaxy grown GaN thin films with a focused-ion-beam implanter at room temperature. The implantation doses range from 1?×?10{sup 14} to 1?×?10{sup 16?}cm{sup ?2}. Structural properties studied by x-ray diffraction and Raman-scattering spectroscopy revealed Sm incorporation into GaN matrix without secondary phase. The optical measurements showed that the band gap and optical constants changed very slightly by the implantation. Photoluminescence measurements showed emission spectra similar to p-type GaN for all samples. Magnetic investigations with a superconducting quantum interference device identified magnetic ordering for Sm dose of and above 1?×?10{sup 15?}cm{sup ?2} before thermal annealing, while ferromagnetism was only observed after thermal annealing from the sample with highest Sm dose. The long-range magnetic ordering can be attributed to interaction of Sm ions through the implantation-induced Ga vacancy.

  6. Interval to Biochemical Failure Predicts Clinical Outcomes in Patients With High-Risk Prostate Cancer Treated by Combined-Modality Radiation Therapy

    SciTech Connect (OSTI)

    Shilkrut, Mark; McLaughlin, P. William [Department of Radiation Oncology, University of Michigan Health System, Ann Arbor, Michigan (United States)] [Department of Radiation Oncology, University of Michigan Health System, Ann Arbor, Michigan (United States); Merrick, Gregory S. [Schiffler Cancer Center, Wheeling Jesuit University, Wheeling, West Virginia (United States)] [Schiffler Cancer Center, Wheeling Jesuit University, Wheeling, West Virginia (United States); Vainshtein, Jeffrey M.; Feng, Felix Y. [Department of Radiation Oncology, University of Michigan Health System, Ann Arbor, Michigan (United States)] [Department of Radiation Oncology, University of Michigan Health System, Ann Arbor, Michigan (United States); Hamstra, Daniel A., E-mail: dhamm@med.umich.edu [Department of Radiation Oncology, University of Michigan Health System, Ann Arbor, Michigan (United States)

    2013-07-15T23:59:59.000Z

    Purpose: To validate the prognostic value of interval to biochemical failure (IBF) in patients with high-risk prostate cancer (HiRPCa) treated with combined-modality radiation therapy (CMRT) with or without androgen deprivation therapy (ADT). Methods and Materials: We conducted a retrospective review of HiRPCa (prostate-specific antigen >20 ng/mL, Gleason score [GS] 8-10, or clinical T stage T3-T4) treated with either dose-escalated external beam radiation therapy (EBRT) or CMRT. Interval to biochemical failure was classified as ?18 or >18 months from the end of all therapy to the date of biochemical failure (BF). Kaplan-Meier methods and Cox proportional hazards regression were used to evaluate the prognostic value of IBF ?18 months for distant metastasis (DM) and prostate cancer-specific mortality (PCSM). Results: Of 958 patients with a median follow-up of 63.2 months, 175 patients experienced BF. In those with BF, there were no differences in pretreatment clinical characteristics between the EBRT and CMRT groups, except for a higher proportion of patients with GS 8-10 in the CMRT group (70% vs 52%, P=.02). Median IBF after all therapy was 24.0 months (interquartile range 9.6-46.0) in the EBRT group and 18.9 months (interquartile range 9.2-34.5) in the CMRT group (P=.055). On univariate analysis, IBF ?18 months was associated with increased risk of DM and PCSM in the entire cohort and the individual EBRT and CMRT groups. On multivariate analysis, only GS 9-10 and IBF ?18 months, but not the radiation therapy regimen or ADT use, predicted DM (hazard ratio [HR] 3.7, P<.01, 95% confidence interval [CI] 1.4-10.3 for GS 9-10; HR 3.9, P<.0001, 95% CI 2.4-6.5 for IBF ?18 months) and PCSM (HR 14.8, P<.009, 95% CI 2.0-110 for GS 9-10; HR 4.4, P<.0001, 95% CI 2.4-8.1 for IBF ?18 months). Conclusions: Short IBF was highly prognostic for higher DM and PCSM in patients with HiRPCa. The prognostic value of IBF for DM and PCSM was not affected by the radiation therapy regimen or ADT use.

  7. The risk implications of approaches to setting soil remediation goals at hazardous waste contaminated sites

    SciTech Connect (OSTI)

    Labieniec, P.A.

    1994-08-01T23:59:59.000Z

    An integrated exposure and carcinogenic risk assessment model for organic contamination in soil, SoilRisk, was developed and used for evaluating the risk implications of both site-specific and uniform-concentration approaches to setting soil remediation goals at hazardous-waste-contaminated sites. SoilRisk was applied to evaluate the uncertainty in the risk estimate due to uncertainty in site conditions at a representative site. It was also used to evaluate the variability in risk across a region of sites that can occur due to differences in site characteristics that affect contaminant transport and fate when a uniform concentration approach is used. In evaluating regional variability, Ross County, Ohio and the State of Ohio were used as examples. All analyses performed considered four contaminants (benzene, trichloroethylene (TCE), chlordane, and benzo[a]pyrene (BAP)) and four exposure scenarios (commercial, recreational and on- and offsite residential). Regardless of whether uncertainty in risk at a single site or variability in risk across sites was evaluated, the exposure scenario specified and the properties of the target contaminant had more influence than variance in site parameters on the resulting variance and magnitude of the risk estimate. In general, variance in risk was found to be greater for the relatively less degradable and more mobile of the chemicals studied (TCE and chlordane) than for benzene which is highly degradable and BAP which is very immobile in the subsurface.

  8. Enterprise Risk Management Program

    E-Print Network [OSTI]

    Hayden, Nancy J.

    Enterprise Risk Management Program DRAFT Introduction to Enterprise Risk Management at UVM 1 #12;Enterprise Risk Management Program DRAFT What is Enterprise Risk Management? Enterprise risk management governance, and accountability · Facilitates effective management of the uncertainty and associated risks

  9. Risk Assessment Risk communication 1997

    E-Print Network [OSTI]

    Hung, Shih-Hao

    · 1 1997 2003 WHO #12;6060 NTU Alumni Bimonthly No.87 Fault tree Event tree [2] Nuclear reactor of nuclear power plants. Reliability Engineering and Safety System, 52:297-314. [4] Jonas Hagmann. 2012. Fukushima: probing the analytical and epistemological limits of risk analysis. Journal of Risk Research. 15

  10. Market Based Risk Mitigation: Risk Management vs. Risk Avoidance

    E-Print Network [OSTI]

    Market Based Risk Mitigation: Risk Management vs. Risk Avoidance Shmuel Oren University of the critical infrastructures in our society. Risk assessment and systematic consideration of risk in the design knowledge for engineers, like physics for instance, consideration of risk has penetrated all engineering

  11. Comparison of high temperature mechanical properties of two monolithic SiC ceramics and an Al{sub 2}O{sub 3}/SiC composite

    SciTech Connect (OSTI)

    Breder, K.

    1995-07-01T23:59:59.000Z

    Fast fracture strength, slow crack growth, and creep properties have been evaluated for three ceramics in air at room temperature and two elevated temperatures. The ceramics are candidate materials for heat exchangers in fossil energy systems, therefore, retained strength after coal ash exposure was also measured. At 1100{degrees}C the ceramics had acceptable mechanical properties, but two of them exhibited strength loss due to coal ash corrosion. At 1400{degrees}C creep and slow crack growth were observed in two of the materials, and the material which exhibited best resistance to coal ash showed unacceptably high creep rates.

  12. High-Risk Prostate Cancer With Gleason Score 8-10 and PSA Level {<=}15 ng/ mL Treated With Permanent Interstitial Brachytherapy

    SciTech Connect (OSTI)

    Fang, L. Christine [Department of Radiation Oncology, University of Washington, Seattle, WA (United States); Merrick, Gregory S., E-mail: gmerrick@urologicresearchinstitute.org [Schiffler Cancer Center, Wheeling Jesuit University, Wheeling, WV (United States); Butler, Wayne M.; Galbreath, Robert W.; Murray, Brian C.; Reed, Joshua L. [Schiffler Cancer Center, Wheeling Jesuit University, Wheeling, WV (United States); Adamovich, Edward [Department of Pathology, Wheeling Hospital, Wheeling, WV (United States); Wallner, Kent E. [Puget Sound Veterans Affairs Hospital, Seattle, WA (United States)

    2011-11-15T23:59:59.000Z

    Purpose: With widespread prostate-specific antigen (PSA) screening, there has been an increase in men diagnosed with high-risk prostate cancer defined by a Gleason score (GS) {>=}8 coupled with a relatively low PSA level. The optimal management of these patients has not been defined. Cause-specific survival (CSS), biochemical progression-free survival (bPFS), and overall survival (OS) were evaluated in brachytherapy patients with a GS {>=}8 and a PSA level {<=}15 ng/mL with or without androgen-deprivation therapy (ADT). Methods and Materials: From April 1995 to October 2005, 174 patients with GS {>=}8 and a PSA level {<=}15 ng/mL underwent permanent interstitial brachytherapy. Of the patients, 159 (91%) received supplemental external beam radiation, and 113 (64.9%) received ADT. The median follow-up was 6.6 years. The median postimplant Day 0 minimum percentage of the dose covering 90% of the target volume was 121.1% of prescription dose. Biochemical control was defined as a PSA level {<=}0.40 ng/mL after nadir. Multiple parameters were evaluated for impact on survival. Results: Ten-year outcomes for patients without and with ADT were 95.2% and 92.5%, respectively, for CSS (p = 0.562); 86.5% and 92.6%, respectively, for bPFS (p = 0.204); and 75.2% and 66.0%, respectively, for OS (p = 0.179). The median post-treatment PSA level for biochemically controlled patients was <0.02 ng/mL. Multivariate analysis failed to identify any predictors for CSS, whereas bPFS and OS were most closely related to patient age. Conclusions: Patients with GS {>=}8 and PSA level {<=}15 ng/mL have excellent bPFS and CSS after brachytherapy with supplemental external beam radiotherapy. The use of ADT did not significantly impact bPFS, CSS, or OS.

  13. Sunitinib Plus Androgen Deprivation and Radiation Therapy for Patients With Localized High-Risk Prostate Cancer: Results From a Multi-institutional Phase 1 Study

    SciTech Connect (OSTI)

    Corn, Paul G., E-mail: pcorn@mdanderson.org [Department of Genitourinary Medical Oncology, University of Texas M. D. Anderson Cancer Center, Houston, Texas (United States); Song, Danny Y. [Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University, Baltimore, Maryland (United States)] [Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University, Baltimore, Maryland (United States); Heath, Elisabeth; Maier, Jordan [Karmanos Cancer Institute, Wayne State University, Detroit, Michigan (United States)] [Karmanos Cancer Institute, Wayne State University, Detroit, Michigan (United States); Meyn, Raymond [Department of Experimental Radiation Oncology, University of Texas M. D. Anderson Cancer Center, Houston, Texas (United States)] [Department of Experimental Radiation Oncology, University of Texas M. D. Anderson Cancer Center, Houston, Texas (United States); Kuban, Deborah [Department of Radiation Oncology, University of Texas M. D. Anderson Cancer Center, Houston, Texas (United States)] [Department of Radiation Oncology, University of Texas M. D. Anderson Cancer Center, Houston, Texas (United States); DePetrillo, Thomas A. [Department of Radiation Oncology, Tufts Medical Center, Boston, Massachusetts (United States)] [Department of Radiation Oncology, Tufts Medical Center, Boston, Massachusetts (United States); Mathew, Paul, E-mail: pmathew@tuftsmedicalcenter.org [Department of Hematology-Oncology, Tufts Medical Center, University of Texas M. D. Anderson Cancer Center, Houston, Texas (United States)] [Department of Hematology-Oncology, Tufts Medical Center, University of Texas M. D. Anderson Cancer Center, Houston, Texas (United States)

    2013-07-01T23:59:59.000Z

    Purpose: To evaluate the feasibility of administering sunitinib in combination with androgen deprivation therapy and external-beam intensity modulated radiation therapy (XRT) in patients with localized high-risk prostate cancer. Methods and Materials: Seventeen men with localized adenocarcinoma of the prostate with cT2c-cT4 or Gleason 8-10 or prostate-specific antigen >20 ng/mL received initial androgen deprivation (leuprolide 22.5 mg every 12 weeks plus oral bicalutamide 50 mg daily) for 4-8 weeks before oral sunitinib 12.5, 25, or 37.5 mg daily for 4 weeks as lead-in, then concurrently with and 4 weeks after XRT (75.6 Gy in 42 fractions to prostate and seminal vesicles). A 3+3 sequential dose-escalation design was used to assess the frequency of dose-limiting toxicity (DLT) and establish a maximal tolerated dose of sunitinib. Results: Sunitinib at 12.5- and 25-mg dose levels was well tolerated. The first 4 patients enrolled at 37.5 mg experienced a DLT during lead-in, and a drug interaction between sunitinib and bicalutamide was suspected. The protocol was revised and concurrent bicalutamide omitted. Of the next 3 patients enrolled at 37.5 mg, 2 of 3 receiving concurrent therapy experienced DLTs during radiation: grade 3 diarrhea and grade 3 proctitis, respectively. Only 1 of 7 patients completed sunitinib at 37.5 mg daily, whereas 3 of 3 patients (25 mg as starting dose) and 3 of 4 patients (25 mg as reduced dose) completed therapy. Conclusions: The feasibility of combined vascular endothelial growth factor receptor (VEGFR)/platelet-derived growth factor receptor (PDGFR) inhibitor therapy, androgen deprivation, and radiation therapy for prostate cancer was established. Using a daily dosing regimen with lead-in, concurrent, and post-XRT therapy, the recommended phase 2 dose of sunitinib is 25 mg daily.

  14. Stent Thrombogenicity Early in High Risk Interventional Settings is Driven by Stent Design and Deployment, and Protected by Polymer-Drug Coatings

    E-Print Network [OSTI]

    Kolandaivelu, Kumaran

    Background—Stent thrombosis is a lethal complication of endovascular intervention. Concern has been raised about the inherent risk associated with specific stent designs and drug-eluting coatings, yet clinical and animal ...

  15. Understanding risk in a biopharmaceutical portfolio

    E-Print Network [OSTI]

    Wagner, Alice Elizabeth, 1980-

    2011-01-01T23:59:59.000Z

    Investors have difficulty funding the life sciences because of the high risks involved in research and development and commercialization of new products. Risk in the biopharmaceutical industry is the result of scientific, ...

  16. Does accounting quality mitigate risk shifting?

    E-Print Network [OSTI]

    Loktionov, Yuri V

    2009-01-01T23:59:59.000Z

    This study examines the effect of financial reporting quality on risk shifting, an investment distortion that is caused by shareholders' incentives to engage in high-risk projects that are detrimental to debt holders. I ...

  17. Density, porosity, mineralogy, and internal structure of cosmic dust and alteration of its properties during high velocity atmospheric entry

    E-Print Network [OSTI]

    Kohout, T; Suuronen, J -P; Rochette, P; Hutzler, A; Gattacceca, J; Skála, D D Badjukov R; Böhmová, V; ?uda, J

    2014-01-01T23:59:59.000Z

    X-ray microtomography (XMT), X-ray diffraction (XRD) and magnetic hysteresis measurements were used to determine micrometeorite internal structure, mineralogy, crystallography, and physical properties at ~{\\mu}m resolution. The study samples include unmelted, partially melted (scoriaceous) and completely melted (cosmic spherules) micrometeorites. This variety not only allows comparison of the mineralogy and porosity of these three micrometeorite types, but also reveals changes in meteoroid properties during atmospheric entry at various velocities. At low entry velocities, meteoroids do not melt, and their physical properties do not change. The porosity of unmelted micrometeorites varies considerably (0-12%) with one friable example having porosity around 50%. At higher velocities, the range of meteoroid porosity narrows, but average porosity increases (to 16-27%) due to volatile evaporation and partial melting (scoriaceous phase). Metal distribution seems to be mostly unaffected at this stage. At even higher ...

  18. Final Report - Crystal Settling, Redox, and High Temperature Properties of ORP HLW and LAW Glasses, VSL-09R1510-1, Rev. 0, dated 6/18/09

    SciTech Connect (OSTI)

    Kruger, Albert A.; Wang, C.; Gan, H.; Pegg, I. L.; Chaudhuri, M.; Kot, W.; Feng, Z.; Viragh, C.; McKeown, D. A.; Joseph, I.; Muller, I. S.; Cecil, R.; Zhao, W.

    2013-11-13T23:59:59.000Z

    The radioactive tank waste treatment programs at the U. S. Department of Energy (DOE) have featured joule heated ceramic melter technology for the vitrification of high level waste (HLW). The Hanford Tank Waste Treatment and Immobilization Plant (WTP) employs this same basic technology not only for the vitrification of HLW streams but also for the vitrification of Low Activity Waste (LAW) streams. Because of the much greater throughput rates required of the WTP as compared to the vitrification facilities at the West Valley Demonstration Project (WVDP) or the Defense Waste Processing Facility (DWPF), the WTP employs advanced joule heated melters with forced mixing of the glass pool (bubblers) to improve heat and mass transport and increase melting rates. However, for both HLW and LAW treatment, the ability to increase waste loadings offers the potential to significantly reduce the amount of glass that must be produced and disposed and, therefore, the overall project costs. This report presents the results from a study to investigate several glass property issues related to WTP HLW and LAW vitrification: crystal formation and settling in selected HLW glasses; redox behavior of vanadium and chromium in selected LAW glasses; and key high temperature thermal properties of representative HLW and LAW glasses. The work was conducted according to Test Plans that were prepared for the HLW and LAW scope, respectively. One part of this work thus addresses some of the possible detrimental effects due to considerably higher crystal content in waste glass melts and, in particular, the impact of high crystal contents on the flow property of the glass melt and the settling rate of representative crystalline phases in an environment similar to that of an idling glass melter. Characterization of vanadium redox shifts in representative WTP LAW glasses is the second focal point of this work. The third part of this work focused on key high temperature thermal properties of representative WTP HLW and LAW glasses over a wide range of temperatures, from the melter operating temperature to the glass transition.

  19. The correlation between the radial distribution of high-energetic ions and the structural as well as electrical properties of magnetron sputtered ZnO:Al films

    SciTech Connect (OSTI)

    Bikowski, André; Welzel, Thomas; Ellmer, Klaus [Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Institute for Solar Fuels, Hahn-Meitner-Platz 1, D-14109 Berlin (Germany)] [Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Institute for Solar Fuels, Hahn-Meitner-Platz 1, D-14109 Berlin (Germany)

    2013-12-14T23:59:59.000Z

    The origin of the pronounced radial distributions of structural and electrical properties of magnetron sputtered ZnO:Al films has been investigated. The film properties were correlated with the radially resolved ion-distribution functions. While the positive ions exhibit low energies and a radial distribution with a maximum intensity opposite the center of the target, the negative ions can have energies up to several hundred eV, depending on the target potential, with a radial distribution with two maxima opposite the erosion tracks. The most prominent positive ion is that of the working gas (Ar{sup +}), while the highest flux of the negative ions is measured for negative oxygen O{sup ?}. The radial distribution of the flux of the high-energetic negative ions can clearly be related to the radial variations of the structural (c-axis lattice parameter, crystallite size) and electronic (resistivity) properties for sputtering from the planar target, which points to the decisive role of the high-energetic negative oxygen ions for the film quality. The relation between the negative ion bombardment and the structural as well as electronic properties can be explained by a qualitative model recently developed by us. The same target has also been investigated in the eroded state. In this case, the limited acceptance angle of the mass spectrometer leads to a misinterpretation of the radial distribution of the flux of the high-energetic negative ions. This effect can be explained by a simulation, based on the assumption that the high-energetic negative ions are mainly accelerated in the cathode (target) sheath perpendicular to the uneven substrate surface.

  20. Property/composition relationships for Hanford high-level waste glasses melting at 115{degrees}C volume 1: Chapters 1-11

    SciTech Connect (OSTI)

    Hrma, P.R.; Piepel, G.F.

    1994-12-01T23:59:59.000Z

    A Composition Variation study (CVS) is being performed within the Pacific Northwest Laboratory Vitrification Technology Development (PVTD) project in support of a future high-level nuclear waste vitrification plant at the Hanford site in Washington. From 1989 to 1994, over 120 nonradioactive glasses were melted and properties measured in five statistically-designed experimental phases. Glass composition is represented by the 10 components SiO{sub 2}, B{sub 2}O{sub 3}, Al{sub 2}O{sub 3}, Fe{sub 2}O{sub 3}, ZrO{sub 2}, Na{sub 2}O, Li{sub 2}O, CaO, MgO, and Others (all remaining components). The properties measured include viscosity ({eta}), electrical conductivity ({epsilon}), glass transition temperature (T{sub g} ), thermal expansion of solid glass ({alpha}{sub s}) and molten glass ({alpha}{sub m}), crystallinity (quenched and canister centerline cooled glasses), liquidus temperature (T{sub L}), durability based on normalized elemental releases from the Materials Characterization Center-1 28-day dissolution test (MCC-1, r{sub mi}) and the 7-day Product Consistency Test (PCT, r{sub pi}), and solution pHs from MCC-1 and PCT. Amorphous phase separation was also evaluated. Empirical first- and second-order mixture models were fit using the CVS data to relate the various properties to glass composition. Equations for calculating the uncertainty associated with property values predicted by the models were also developed. The models were validated using both internal and external data. Other modeling approaches (e.g., non-bridging oxygen, free energy of hydration, phase-equilibria T{sub L}) were investigated for specific properties. A preliminary Qualified Composition Region was developed to identify glass compositions with high confidence of being processable in a melter and meeting waste form acceptance criteria.

  1. Property/composition relationships for Hanford high-level waste glasses melting at 1150{degrees}C volume 2: Chapters 12-16 and appendices A-K

    SciTech Connect (OSTI)

    Hrma, P.R.; Piepel, G.F.

    1994-12-01T23:59:59.000Z

    A Composition Variation Study (CVS) is being performed within the Pacific Northwest Laboratory Vitrification Technology Development (PVTD) project in support of a future high-level nuclear waste vitrification plant at the Hanford site in Washington. From 1989 to 1994, over 120 nonradioactive glasses were melted and properties measured in five statistically-designed experimental phases. Glass composition is represented by the 10 components SiO{sub 2}, B{sub 2}O{sub 3}, ZrO{sub 2}, Na{sub 2}O, Li{sub 2}O, CaO, MgO, and Others (all remaining components). The properties measured include viscosity ({eta}), electrical conductivity ({epsilon}), glass transition temperature (T{sub g}), thermal expansion of solid glass ({alpha}{sub s}) and molten glass ({alpha}{sub m}), crystallinity (quenched and canister centerline cooled glasses), liquidus temperature (T{sub L}), durability based on normalized elemental releases from the Materials Characterization Center-1 28-day dissolution test (MCC-1, r{sub mi}) and the 7-day Product Consistency Test (PCT, r{sub pi}), and solution pHs from MCC-1 and PCT. Amorphous phase separation was also evaluated. Empirical first- and second-order mixture models were fit using the CVS data to relate the various properties to glass composition. Equations for calculating the uncertainty associated with property values predicted by the models were also developed. The models were validated using both internal and external data. Other modeling approaches (e.g., non-bridging oxygen, free energy of hydration, phase-equilibria T{sub L}) were investigated for specific properties. A preliminary Qualified Composition Region was developed to identify glass compositions with high confidence of being processable in a melter and meeting waste form acceptance criteria.

  2. High-Dose-Rate Brachytherapy as Monotherapy Delivered in Two Fractions Within One Day for Favorable/Intermediate-Risk Prostate Cancer: Preliminary Toxicity Data

    SciTech Connect (OSTI)

    Ghilezan, Michel, E-mail: mghilezan@beaumont.edu [Department of Radiation Oncology, William Beaumont Hospital and Rose Cancer Institute, Royal Oak, Michigan (United States); Martinez, Alvaro; Gustason, Gary; Krauss, Daniel; Antonucci, J. Vito; Chen, Peter; Fontanesi, James; Wallace, Michelle; Ye Hong; Casey, Alyse; Sebastian, Evelyn; Kim, Leonard; Limbacher, Amy [Department of Radiation Oncology, William Beaumont Hospital and Rose Cancer Institute, Royal Oak, Michigan (United States)

    2012-07-01T23:59:59.000Z

    Purpose: To report the toxicity profile of high-dose-rate (HDR)-brachytherapy (BT) as monotherapy in a Human Investigation Committee-approved study consisting of a single implant and two fractions (12 Gy Multiplication-Sign 2) for a total dose of 24 Gy, delivered within 1 day. The dose was subsequently increased to 27 Gy (13.5 Gy Multiplication-Sign 2) delivered in 1 day. We report the acute and early chronic genitourinary and gastrointestinal toxicity. Methods and Materials: A total of 173 patients were treated between December 2005 and July 2010. However, only the first 100 were part of the IRB-approved study and out of these, only 94 had a minimal follow-up of 6 months, representing the study population for this preliminary report. All patients had clinical Stage T2b or less (American Joint Committee on Cancer, 5th edition), Gleason score 6-7 (3+4), and prostate-specific antigen level of {<=}12 ng/mL. Ultrasound-guided HDR-BT with real-time dosimetry was used. The prescription dose was 24 Gy for the first 50 patients and 27 Gy thereafter. The dosimetric goals and constraints were the same for the two dose groups. Toxicity was scored using the National Cancer Institute Common Terminology Criteria for Adverse Events, version 3. The highest toxicity scores encountered at any point during follow-up are reported. Results: The median follow-up was 17 months (range, 6-40.5). Most patients had Grade 0-1 acute toxicity. The Grade 2 acute genitourinary toxicity was mainly frequency/urgency (13%), dysuria (5%), hematuria, and dribbling/hesitancy (2%). None of the patients required a Foley catheter at any time; however, 8% of the patients experienced transient Grade 1 diarrhea. No other acute gastrointestinal toxicities were found. The most common chronic toxicity was Grade 2 urinary frequency/urgency in 16% of patients followed by dysuria in 4% of patients; 2 patients had Grade 2 rectal bleeding and 1 had Grade 4, requiring laser treatment. Conclusions: Favorable-risk prostate cancer patients treated with a single implant HDR-BT to 24-27 Gy in two fractions within 1 day have excellent tolerance with minimal acute and chronic toxicity. Longer follow-up is needed to confirm these encouraging early results.

  3. Effect of high-temperature loading on mechanical properties of Nicalon fibers and Nicalon fiber/SiC matrix composites

    SciTech Connect (OSTI)

    Singh, D.; Singh, J.P.

    1993-01-01T23:59:59.000Z

    Results of an investigation into the effect of elevated temperature exposure on the strength distribution of Nicalon fibers as well on mechanical properties of Nicalon/SiC composites are reported in this paper. Single-fiber strength distribution of as-fabricated Nicalon fibers was obtained from bundle tests. Strength distributions of fractured fibers in as-fabricated Nicalon/SiC composites and after elevated temperature exposure of composites were assessed from measurements of fracture mirror radii. Variations in the mechanical properties of composites evaluated as a function of test temperatures are compared with those evaluated at room temperature and are correlated to the fiber strength characteristics. Limited tests were also conducted to investigate the effect of long term exposure at elevated temperatures on composite ultimate strength.

  4. The critical role of growth temperature on the structural and electrical properties of AlGaN/GaN high electron mobility transistor heterostructures grown on Si(111)

    SciTech Connect (OSTI)

    Baron, N. [CRHEA-CNRS, rue Bernard Gregory, Parc de Sophia Antipolis, 06560 Valbonne (France); PICOGIGA International, Place Marcel Rebuffat, Parc de Villejust, 91971 Courtaboeuf (France); Cordier, Y.; Chenot, S.; Vennegues, P.; Tottereau, O.; Leroux, M.; Semond, F.; Massies, J. [CRHEA-CNRS, rue Bernard Gregory, Parc de Sophia Antipolis, 06560 Valbonne (France)

    2009-02-01T23:59:59.000Z

    This work is dedicated to the study of the growth by ammonia source molecular beam epitaxy of Al{sub x}Ga{sub 1-x}N/GaN high electron mobility transistors on (111) oriented silicon substrates. The effect of growth conditions on the structural and electrical properties of the heterostructures was investigated. It is shown that even a slight variation in the growth temperature of the thick GaN buffer on AlN/GaN stress mitigating layers has a drastic influence on these properties via a counterintuitive effect on the dislocation density. Both in situ curvature measurements and ex situ transmission electron microscopy and x-ray diffraction experiments indicate that the relaxation rate of the lattice mismatch stress increases with the growth temperature but finally results in a higher dislocations density. Furthermore, a general trend appears between the final wafer curvature at room temperature and the threading dislocation density. Finally, the influence of the dislocation density on the GaN buffer insulating properties and the two-dimensional electron gas transport properties at the Al{sub x}Ga{sub 1-x}N/GaN interface is discussed.

  5. The Impact of the Samantha Academy of Creative Education (SACE) on Students Placed At-Risk at a Suburban High School in Southwest Texas

    E-Print Network [OSTI]

    Valdez, Patrick J.

    2010-01-16T23:59:59.000Z

    of calculating drop out rates, differing opinions on the causes of school dropout, and a body of literature that is sparse concerning educational approaches for keeping students placed at-risk in school. This study examined the impact of the Samantha Academy...

  6. Effect of low and high storage temperatures on head space gas concentrations and physical properties of wood pellets

    SciTech Connect (OSTI)

    Jaya Shankar Tumuluru; Shahab Sokhansanj; C. Jim Lim; Tony Bi; Xingya Kuang; Staffan Melin

    2013-11-01T23:59:59.000Z

    Headspace gas concentrations and wood pellet properties were studied in sealed glass canisters at 5–40 degrees C storage temperatures. CO2 and CO concentrations at 5, 10, 20 and 40 degrees C at the end of 23–28 days of storage were 1600 and 200, 4700 and 1200, and 31 200 and 15 800 parts per million by volume (ppmv) respectively. Corresponding O2 concentration was about 19•49, 19•20, 18•0 and 2•07% respectively. Non-linear regression equations adequately described the gas concentrations in the storage container as a function of time. Safe level estimation functions developed were linear for O2 and logarithmic for CO and CO2 concentrations. Measured pellet properties moisture, length, diameter, unit, bulk and tapped density, durability, calorific value, ash content and per cent fines were in the range of 4•6–5•02%, 14–15 mm, 6•4–6•5 mm, 1125–1175 kg m-3, 750–770 kg m-3, 825–840 kg m-3, 73–74%, 18•32–18•78 MJ kg-1, 0•65–0•74% and 0•13–0•15%. Durability values of pellets decreased by 13% at 40 degrees C storage temperature and other properties changed marginally.

  7. Sandia National Laboratories: Sandia Co-Hosts "Climate Risk Forum...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    insure property and livelihoods against climate-related risks." To begin the forum, three panels gave presentations: The current state of climate research. Kate Ricke (Stanford...

  8. Intro -You are at Risk! a. Rangeplainsfirehistory

    E-Print Network [OSTI]

    , tender, stock tanks 3. DefensibleSpace a. Homes/structures b. Barns/feedlots c. Windbreaks to these abundant dry fuels puts you and your property at risk. Residents need to know what measures to take

  9. Ecological Risk Assessments

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Ecological Risk Assessments Ecological Risk Assessments Ecological risk assessment is the appraisal of potential adverse effects of exposure to contaminants on plants and animals....

  10. Risk Without Return

    E-Print Network [OSTI]

    Goldberg, Lisa R.; Mahmoud, Ola

    2013-01-01T23:59:59.000Z

    and Mitra, I. (2010). Extreme risk analysis. The Journal offrom the fact that the risk parity strategy was diversifiedboth in capital and in risk weights. Further research into

  11. Successful Characterization Strategies for the Active High Risk Y-12 National Security Complex 9201-5 (Alpha-5) Facility, Oak Ridge, TN - 12164

    SciTech Connect (OSTI)

    Birchfield, Joseph W. III [Link Technologies (United States); Albrecht, Linda [Alliant Corporation (United States)

    2012-07-01T23:59:59.000Z

    Building 9201-5 (Alpha 5) was completed in May 1944 and served as a production facility for National Nuclear Security Administration (NNSA) Y-12 Weapons Plant. During the Manhattan Project, it functioned as a uranium enrichment facility. The facility was renovated and altered over the years, converting the calutrons to support other missions. Alpha 5 consists of 4 floors and a basement measuring approximately 600,000 square feet. The facility contains various pieces of equipment remaining from legacy operations. A significant amount (approximately 200,000 kgs) of mercury (Hg) has been spilled in the facility over the operational history of the building. To further complicate matters, beryllium (Be) contamination in 9201-5 is found throughout approximately sixty percent of the facility. Concentrations varying from very low (< 0.2 micrograms (?g)/100 cm{sup 2}) to areas where concentrations are relatively high, approximately 600 ?g/100 cm{sup 2}, in regulated beryllium areas. The primary site related contaminants (SRCs) for the waste in this facility are enriched uranium, depleted uranium, beryllium and mercury. This facility represents the highest environmental risk for DOE-ORO EM and NNSA at Y-12 and must be quickly addressed to minimize impacts to future Y-12 missions, as well as human health and the environment. As part of the American Recovery and Reinvestment Act (ARRA), approximately 700,000 cubic feet of legacy material was removed in 2010 and 2011. In addition, characterization of the 9201-5 facility was scheduled in the winter and spring of 2011. This activity was initiated in January 2011 and was completed in July 2011. Heavy schedule pressure was further complicated by the fact that this building has active utility, security and process systems. Given these complex variables, a unique, out of the box characterization strategy was forged in an effort to bound radiological and chemical contaminants, as well as providing the appropriate level of quality to ensure that this data could be used to develop waste profiles when deactivation, decontamination and demolition (D and D) activities are authorized at a future date. The characterization strategy involved a hybrid model of statistically-based and biased sampling events. To achieve the desired results, traditional intrusive sampling and laboratory analysis, as well as a number of field-based characterization methodologies (e.g., X-ray Fluorescence [XRF], Lumex and Non-Destructive Assay [NDA]) were utilized. Results were captured and synthesized into meaningful, usable conclusions in a facility characterization report that will more accurately aid D and D cost estimates for future remedial actions. This massive characterization campaign involved over 1,200 separate sample locations using 4 separate characterization methods and was successfully completed to meet a performance-based milestone within 8 months of initiation. (authors)

  12. Investigation of the Dynamical, Macrophysical and Radiative Properties of High Clouds Combining Satellite Observations and Climate Model Simulations

    E-Print Network [OSTI]

    Li, Yue

    2012-02-14T23:59:59.000Z

    This dissertation investigates three topics concerning high clouds: 1) convectively coupled equatorial wave (CCEW) signals derived from cloud top temperature (CTT) and cirrus optical thickness retrieved from satellite observations; 2) investigation...

  13. Risk Dynamics?An Analysis for the Risk of Change

    E-Print Network [OSTI]

    Huang, Tailin

    2010-01-01T23:59:59.000Z

    Is Quantitative Risk Assessment?" Risk Analysis, Aubrey,quantitative methods of how people do science, engineering and risk analysisthe Quantitative Definition of Risk." Risk Analysis, 1(1),

  14. Broadband Spectral Properties of Bright High-Energy Gamma-Ray Bursts Observed with BATSE and EGRET

    E-Print Network [OSTI]

    Y. Kaneko; M. M. Gonzalez; R. Preece; B. L. Dingus; M. S. Briggs

    2008-01-12T23:59:59.000Z

    We present the spectral analysis of duration-integrated broadband spectra (in $\\sim30 $keV$-200 $MeV) of 15 bright BATSE gamma-ray bursts (GRBs). Some GRB spectra are very hard, with their spectral peak energies being above the BATSE LAD passband limit of $\\sim$2 MeV. In such cases, their high-energy spectral parameters (peak energy and high-energy power-law indices) cannot be adequately constrained by BATSE LAD data alone. A few dozen bright BATSE GRBs were also observed with EGRET's calorimeter, TASC, in multi-MeV energy band, with a large effective area and fine energy resolution. Combining the BATSE and TASC data, therefore, affords spectra that span four decades of energy ($30 $keV$-200 $MeV), allowing for a broadband spectral analysis with good statistics. Studying such broadband high-energy spectra of GRB prompt emission is crucial, as they provide key clues to understanding its gamma-ray emission mechanism. Among the 15 GRB spectra, we found two cases with a significant high-energy excess, and another case with a extremely high peak energy (\\epeak $\\gtrsim$ 170 MeV). There have been very limited number of GRBs observed at MeV energies and above, and only a few instruments have been capable of observing GRBs in this energy band with such high sensitivity. Thus, our analysis results presented here should also help predict GRB observations with current and future high-energy instruments such as AGILE and GLAST, as well as with ground-based very-high-energy telescopes.

  15. Elastic properties, sp{sup 3} fraction, and Raman scattering in low and high pressure synthesized diamond-like boron rich carbides

    SciTech Connect (OSTI)

    Zinin, Pavel V.; Burgess, Katherine; Jia, Ruth; Sharma, Shiv; Ming, Li-Chung [Hawaii Institute of Geophysics and Planetology, University of Hawaii, Honolulu, Hawaii 96822 (United States); Liu, Yongsheng [Science and Technology on Thermostructure Composite Materials Laboratory, Northwestern Polytechnical University, Xi'an Shanxi (China); Ciston, Jim [National Center for Electron Microscopy, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States); Hong, Shiming [Laboratory of High Pressure Physics, Southwest Jiaotong University, Chengdu, Sichuan (China)

    2014-10-07T23:59:59.000Z

    Dense BC{sub x} phases with high boron concentration are predicted to be metastable, superhard, and conductors or superconductors depending on boron concentration. However, up to this point, diamond-like boron rich carbides BC{sub x} (dl-BC{sub x}) phases have been thought obtainable only through high pressure and high temperature treatment, necessitating small specimen volume. Here, we use electron energy loss spectroscopy combined with transmission electron microscopy, Raman spectroscopy, surface Brillouin scattering, laser ultrasonics (LU) technique, and analysis of elastic properties to demonstrate that low pressure synthesis (chemical vapor deposition) of BC{sub x} phases may also lead to the creation of diamond-like boron rich carbides. The elastic properties of the dl-BC{sub x} phases depend on the carbon sp{sup 2} versus sp{sup 3} content, which decreases with increasing boron concentration, while the boron bonds determine the shape of the Raman spectra of the dl-BC{sub x} after high pressure-high temperature treatment. Using the estimation of the density value based on the sp{sup 3} fraction, the shear modulus ? of dl-BC{sub 4}, containing 10% carbon atoms with sp{sup 3} bonds, and dl-B{sub 3}C{sub 2}, containing 38% carbon atoms with sp{sup 3} bonds, were found to be ??=?19.3?GPa and ??=?170?GPa, respectively. The presented experimental data also imply that boron atoms lead to a creation of sp{sup 3} bonds during the deposition processes.

  16. Five-Year Results From a Scandinavian Sarcoma Group Study (SSG XIII) of Adjuvant Chemotherapy Combined With Accelerated Radiotherapy in High-Risk Soft Tissue Sarcoma of Extremities and Trunk Wall

    SciTech Connect (OSTI)

    Jebsen, Nina L. [Department of Surgical Sciences, University of Bergen Faculty of Medicine, Bergen, Norway and Department of Oncology, Haukeland University Hospital, Bergen (Norway); Bruland, Oyvind S. [Cancer Clinic, Norwegian Radium Hospital, Oslo University Hospital and University of Oslo Faculty Division, Clinical Medicine, Oslo (Norway); Eriksson, Mikael; Engellau, Jacob [Department of Oncology, Skane University Hospital, Lund (Sweden); Turesson, Ingela [Department of Oncology, Uppsala University Hospital, Uppsala (Sweden); Folin, Annika [Department of Oncology, Karolinska Hospital, Stockholm (Sweden); Trovik, Clement S. [Departments of Oncology and of Orthopedics, Haukeland University Hospital, Bergen (Norway); Hall, Kirsten Sundby [Cancer Clinic, Norwegian Radium Hospital, Oslo University Hospital, Oslo (Norway)

    2011-12-01T23:59:59.000Z

    Purpose: To evaluate adjuvant chemotherapy and interpolated accelerated radiotherapy (RT) for adult patients with high-risk soft tissue sarcoma in the extremities or trunk wall. Methods and Materials: High-risk soft tissue sarcoma was defined as high-grade malignancy and at least two of the following criteria: size {>=}8 cm, vascular invasion, or necrosis. Six cycles of doxorubicin and ifosfamide were prescribed for all patients. RT to a total dose of 36 Gy (1.8 Gy twice daily) was inserted between two chemotherapy cycles after marginal margin resection regardless of tumor depth or after wide-margin resection for deep-seated tumors. RT was boosted to 45 Gy in a split-course design in the case of intralesional margin resection. Results: A total of 119 patients were eligible, with a median follow-up of 5 years. The 5-year estimate of the local recurrence, metastasis-free survival, and overall survival rate was 12%, 59%, and 68%, respectively. The group receiving RT to 36 Gy had a local recurrence rate of 10%. In contrast, the local recurrence rate was 29% in the group treated with RT to 45 Gy. The presence of vascular invasion and low chemotherapy dose intensity had a negative effect on metastasis-free and overall survival. Toxicity was moderate after both the chemotherapy and the RT. Conclusions: Accelerated RT interposed between chemotherapy cycles in a selected population of patients with high-risk soft tissue sarcoma resulted in good local and distant disease control, with acceptable treatment-related morbidity. The greater radiation dose administered after intralesional surgery was not sufficient to compensate for the poorer surgical margin. Vascular invasion was the most important prognostic factor for metastasis-free and overall survival.

  17. Enterprise Risk Management Program

    E-Print Network [OSTI]

    Hayden, Nancy J.

    Enterprise Risk Management Program Guide to Risk Assessment & Response August 16, 2012 #12; i ...........26 List of Figures Figure 1: The Risk Management Process.......................................................................................................12 #12; 1 Overview The risk management process--of identifying, analyzing, evaluating

  18. Credit Risk Analyst

    Broader source: Energy.gov [DOE]

    The incumbent in this position will serve as a Credit Risk Analyst in the Transacting and Credit Risk Management department of the Office of Risk Management. The Transacting and Credit Risk...

  19. Influence of low and high temperature coking of H-GaMFI propane aromatization catalyst on its surface and catalytic properties

    SciTech Connect (OSTI)

    Choudhary, V.R.; Kinage, A.K.; Devadas, P. [National Chemical Lab., Pune (India)] [and others] [National Chemical Lab., Pune (India); and others

    1997-03-01T23:59:59.000Z

    H-Gallosilicate (MFI) (i.e., H-GaMFI) zeolite shows high activity/selectivity in the aromatization of lower alkanes, which is processes of treat practical importance. The high aromatization activity of this catalyst is attributed to its high dehydrogenation activity due to the presence of high dispersed nonframework Ga-oxide species (which are formed during hydrothermal synthesis and/or pretreatments to the zeolite) along with the zeolitic acid sites (or framework Ga), resulting in a bifunctional catalyst. However, this zeolite undergoes fast catalyst deactivation in the propane aromatization. The catalyst deactivation is attributed mainly to the coke formation on the zeolite. Earlier, a few studies have been reported on the deactivation of H-GaMFI zeolite in the propane aromatization. The catalyst deactivation is attributed mainly to the coke formation on the zeolite. Earlier, a few studies have been reported on the deactivation of H-GaMFI zeolite in the propane aromatization at 500-550{degrees}C for a short time-on-stream (10 h). It is interesting to know the effect of catalyst deactivation due to coking in the propane aromatization for much longer periods both at low (at 400{degrees}C) and high (at 550{degrees}C) temperatures on the product selectivity and also on the surface (viz., sorption capacity, acidity/acid strength distribution) and catalytic properties of the zeolite. The present investigation was undertaken for this purpose. 16 refs., 1 fig., 3 tabs.

  20. High-definition analysis of fluid-induced seismicity related to the mesoscale hydromechanical properties of a fault zone

    E-Print Network [OSTI]

    Vallée, Martin

    -strain and seismic measurements taken in the fractured damage zone during the pressurization indicated that seismicity is triggered along low-permeable, highly rigid, low-dip angle, mesoscale-inherited fractures where-so-rigid, aseismic, sub- vertical, fault-related fractures. Using a three-dimensional distinct-element representation

  1. Broadband Spectral Properties of Bright High-Energy Gamma-Ray Bursts Observed with BATSE and EGRET

    E-Print Network [OSTI]

    Kaneko, Y; Preece, R; Dingus, B L; Briggs, M S

    2008-01-01T23:59:59.000Z

    We present the spectral analysis of duration-integrated broadband spectra (in $\\sim30 $keV$-200 $MeV) of 15 bright BATSE gamma-ray bursts (GRBs). Some GRB spectra are very hard, with their spectral peak energies being above the BATSE LAD passband limit of $\\sim$2 MeV. In such cases, their high-energy spectral parameters (peak energy and high-energy power-law indices) cannot be adequately constrained by BATSE LAD data alone. A few dozen bright BATSE GRBs were also observed with EGRET's calorimeter, TASC, in multi-MeV energy band, with a large effective area and fine energy resolution. Combining the BATSE and TASC data, therefore, affords spectra that span four decades of energy ($30 $keV$-200 $MeV), allowing for a broadband spectral analysis with good statistics. Studying such broadband high-energy spectra of GRB prompt emission is crucial, as they provide key clues to understanding its gamma-ray emission mechanism. Among the 15 GRB spectra, we found two cases with a significant high-energy excess, and another...

  2. Risk Management, Mar 2012 Risk Management

    E-Print Network [OSTI]

    Risk Management, Mar 2012 Risk Management Conditions of Volunteer Service (Please send completed form to the Office of Risk Management) riskmanagement@uoregon.edu Fax: 541-346-7008 As a volunteer Tort Claims Act, ORS 30.260-300, and Oregon Department of Administrative Services Risk Management

  3. CANCER RISKS AM I AT RISK?

    E-Print Network [OSTI]

    Hardy, Christopher R.

    CANCER RISKS AM I AT RISK? It is often hard to explain why one person develops cancer and another does not. There are risk factors that could increase a person's likelihood of developing cancer, however, some people may have many of these risk factors and never get cancer. When thinking about your

  4. Optical Properties of Moderately-Absorbing Organic and Mixed Organic/Inorganic Particles at Very High Humidities

    SciTech Connect (OSTI)

    Bond, Tami C; Rood, Mark J; Brem, Benjamin T; Mena-Gonzalez, Francisco C; Chen, Yanju

    2012-04-16T23:59:59.000Z

    Relative humidity (RH) affects the water content of an aerosol, altering its ability to scatter and absorb light, which is important for aerosol effects on climate and visibility. This project involves in situ measurement and modeling of aerosol optical properties including absorption, scattering and extinction at three visible wavelengths (467, 530, 660 nm), for organic carbon (OC) generated by pyrolysis of biomass, ammonium sulfate and sodium chloride, and their mixtures at controlled RH conditions. Novel components of this project include investigation of: (1) Changes in all three of these optical properties at scanned RH conditions; (2) Optical properties at RH values up to 95%, which are usually extrapolated instead of measured; and (3) Examination of aerosols generated by the pyrolysis of wood, which is representative of primary atmospheric organic carbon, and its mixture with inorganic aerosol. Scattering and extinction values were used to determine light absorption by difference and single scattering albedo values. Extensive instrumentation development and benchmarking with independently measured and modeled values were used to obtain and evaluate these new results. The single scattering albedo value for a dry absorbing polystyrene microsphere benchmark agreed within 0.02 (absolute value) with independently published results at 530 nm. Light absorption by a nigrosin (sample light-absorbing) benchmark increased by a factor of 1.24 +/-0.06 at all wavelengths as RH increased from 38 to 95%. Closure modeling with Mie theory was able to reproduce this increase with the linear volume average (LVA) refractive index mixing rule for this water soluble compound. Absorption by biomass OC aerosol increased by a factor of 2.1 +/- 0.7 and 2.3 +/- 1.2 between 32 and 95% RH at 467 nm and 530 nm, but there was no detectable absorption at 660 nm. Additionally, the spectral dependence of absorption by OC that was observed with filter measurements was confirmed qualitatively in situ at 467 and 530 nm. Closure modeling with the dynamic effective medium approximation (DEMA) refractive index model was able to capture the increasing absorption trend with RH indicating that the droplets were heterogeneously mixed while containing dispersed insoluble absorbing material within those droplets. Seven other refractive index mixing models including LVA did not adequately describe the measurements for OC. Mixing the biomass OC aerosol with select mass fractions of ammonium sulfate ranging from 25 to 36% and sodium chloride ranging from 21 to 30% resulted in an increase in light scattering and extinction with RH and inorganic mass fraction. However, no detectable difference in light absorption behavior in comparison to pure biomass OC was observed. The main finding of this research is a measured increase in absorption with increasing RH, which is currently not represented in radiative transfer models even though biomass burning produces most of the primary OC aerosol in the atmosphere.

  5. Properties of molecular solids and fluids at high pressure and temperatures. Progress report, July 1, 1989--July 1, 1992

    SciTech Connect (OSTI)

    Etters, R.D.

    1992-03-01T23:59:59.000Z

    This renewal request for DOE grant DE-FG02-86ER45238, is dedicated to providing a complete thermodynamic profile of solids fluids, and fluid mixtures, over a wide range of temperatures and pressures. We are partially motivated by technological interest in detonation, combustion, superhard high pressure materials, and high temperature superconductors, which are important components of interest of various DOE laboratories. Our work on fluids and solids, composed of simple molecules, involves the determination of structures, phase transitions, pressure-volume relations, phonon, vibron, and libron modes of excitation, sound velocities, specific heats, thermal expansion, virial coefficients, sublimation energies, and orientational translational, and magnetic correlations. We hope that the study of these systems under extreme thermodynamic conditions will lead to exotic new materials of value, as well as enhanced fundamental understanding.

  6. Effects of Deletions of High Molecular Weight Glutenin Subunit Alleles on Dough Properties and Wheat Flour Tortilla Quality

    E-Print Network [OSTI]

    Tuncil, Yunus

    2012-10-19T23:59:59.000Z

    , Lloyd W. Rooney Dirk B. Hays Intercollegiate Faculty Chair, Alejandro Castillo August 2012 Major Subject: Food Science and Technology iii ABSTRACT Effects of Deletions of High Molecular Weight Glutenin Subunit Alleles on Dough... and opportunities he provided me. I am thankful to my committee members Dr. Lloyd Rooney for his encouragements and Dr. Dirk Hays providing directions. I acknowledge to Dr. Amir Ibrahim for his support and help with statistical analysis and interpretation. I...

  7. Synthesis of highly efficient antibacterial agent Ag doped ZnO nanorods: Structural, Raman and optical properties

    SciTech Connect (OSTI)

    Jan, Tariq; Iqbal, Javed, E-mail: javed.saggu@iiu.edu.pk [Laboratory of Nanoscience and Technology, Department of Physics, International Islamic University Islamabad (Pakistan); Ismail, Muhammad [Institute of Biomedical and Genetic Engineering (IBGE), Islamabad (Pakistan); Mahmood, Arshad [Nano Devices Labs, National Institute of Lasers and Optronics, Islamabad (Pakistan)

    2014-04-21T23:59:59.000Z

    Here, synthesis, structural, morphological, Raman, optical properties and antibacterial activity of undoped and Ag doped ZnO nanorods by chemical co-precipitation technique have been reported. Structural analysis has revealed that Ag doping cannot deteriorate the structure of ZnO and wurtzite phase is maintained. Lattice constants are found to be decreased with the Ag doping. Fourier transform infrared and Raman spectroscopy also confirm the X-ray diffraction results. Scanning electron microscopy results have demonstrated the formation of ZnO nanorods with average diameter and length of 96?nm and 700?nm, respectively. Raman spectroscopy results suggest that the Ag doping enhances the number of defects in ZnO crystal. It has been found from optical study that Ag doping results in positional shift of band edge absorption peak. This is attributed to the successful incorporation of Ag dopant into ZnO host matrix. The antibacterial activity of prepared nanorods has been determined by two different methods and compared to that of undoped ZnO nanorods. Ag doped ZnO nanorods exhibit excellent antibacterial activity as compared to that of undoped ZnO nanorods. This excellent antibacterial activity may be attributed to the presence of oxygen vacancies and Zn{sup 2+} interstitial defects. Our preliminary findings suggest that Ag doped ZnO nanorods can be used externally to control the spreading of infections related with tested bacterial strains.

  8. Physical properties of the gamma-ray binary LS 5039 through low and high frequency radio observations

    E-Print Network [OSTI]

    Marcote, B; Paredes, J M; Ishwara-Chandra, C H

    2015-01-01T23:59:59.000Z

    We have studied in detail the 0.15-15 GHz radio spectrum of the gamma-ray binary LS 5039 to look for a possible turnover and absorption mechanisms at low frequencies, and to constrain the physical properties of its emission. We have analysed two archival VLA monitorings, all the available archival GMRT data and a coordinated quasi-simultaneous observational campaign conducted in 2013 with GMRT and WSRT. The data show that the radio emission of LS 5039 is persistent on day, week and year timescales, with a variability $\\lesssim 25~\\%$ at all frequencies, and no signature of orbital modulation. The obtained spectra reveal a power-law shape with a curvature below 5 GHz and a turnover at $\\sim0.5$ GHz, which can be reproduced by a one-zone model with synchrotron self-absorption plus Razin effect. We obtain a coherent picture for a size of the emitting region of $\\sim0.85~\\mathrm{mas}$, setting a magnetic field of $B\\sim20~\\mathrm{mG}$, an electron density of $n_{\\rm e}\\sim4\\times10^5~{\\rm cm^{-3}}$ and a mass-los...

  9. Leveraging Formal Methods and Fuzzing to Verify Security and Reliability Properties of Large-Scale High-Consequence Systems.

    SciTech Connect (OSTI)

    Ruthruff, Joseph; Armstrong, Robert C.; Davis, Benjamin Garry; Mayo, Jackson; Punnoose, Ratish J.

    2012-09-01T23:59:59.000Z

    Formal methods describe a class of system analysis techniques that seek to prove specific propertiesabout analyzed designs, or locate flaws compromising those properties. As an analysis capability,these techniques are the subject of increased interest fromboth internal and external customersof Sandia National Laboratories. Given this lab's other areas of expertise, Sandia is uniquelypositioned to advance the state-of-the-art with respect toseveral research and application areaswithin formal methods. This research project was a one-yeareffort funded by Sandia's CyberSecurity S&T Investment Area in its Laboratory Directed Research&Development program toinvestigate the opportunities for formal methods to impactSandia's present mission areas, morefully understand the needs of the research community in the area of formal methods and whereSandia can contribute, and clarify from those potential research paths those that would best advancethe mission-area interests of Sandia. The accomplishmentsfrom this project reinforce the utilityof formal methods in Sandia, particularly in areas relevantto Cyber Security, and set the stagefor continued Sandia investments to ensure this capabilityis utilized and advanced within thislaboratory to serve the national interest.4

  10. The structural and mechanical properties of a Cu??Zr??(at. %) alloy processed by High-Velocity-Injection (HVI)

    E-Print Network [OSTI]

    Hays, Charles C.

    1986-01-01T23:59:59.000Z

    /vacuum coupled pressure gradient. The molten jet rapidly solidifies, as it is in good thermal contact wi th the cir- cular walls of the copper channel. This process (melting and injection) is carried out in inert protective atmospheres (helium). The samples... produced are in the form of cylindrical rods with large length to diameter ratios (40:1). The samples exhibit a good sur- face finish and are of high density. The structural and mechanical characterization of the Cu6 Zr 0(at. %%u) samples produced...

  11. Validation of mathematical models for the prediction of organs-at-risk dosimetric metrics in high-dose-rate gynecologic interstitial brachytherapy

    SciTech Connect (OSTI)

    Damato, Antonio L.; Viswanathan, Akila N.; Cormack, Robert A. [Dana-Farber Cancer Institute and Brigham and Women's Hospital, Boston, Massachusetts 02115 (United States)] [Dana-Farber Cancer Institute and Brigham and Women's Hospital, Boston, Massachusetts 02115 (United States)

    2013-10-15T23:59:59.000Z

    Purpose: Given the complicated nature of an interstitial gynecologic brachytherapy treatment plan, the use of a quantitative tool to evaluate the quality of the achieved metrics compared to clinical practice would be advantageous. For this purpose, predictive mathematical models to predict the D{sub 2cc} of rectum and bladder in interstitial gynecologic brachytherapy are discussed and validated.Methods: Previous plans were used to establish the relationship between D2cc and the overlapping volume of the organ at risk with the targeted area (C0) or a 1-cm expansion of the target area (C1). Three mathematical models were evaluated: D{sub 2cc}=?*C{sub 1}+? (LIN); D{sub 2cc}=?– exp(–?*C{sub 0}) (EXP); and a mixed approach (MIX), where both C{sub 0} and C{sub 1} were inputs of the model. The parameters of the models were optimized on a training set of patient data, and the predictive error of each model (predicted D{sub 2cc}? real D{sub 2cc}) was calculated on a validation set of patient data. The data of 20 patients were used to perform a K-fold cross validation analysis, with K = 2, 4, 6, 8, 10, and 20.Results: MIX was associated with the smallest mean prediction error <6.4% for an 18-patient training set; LIN had an error <8.5%; EXP had an error <8.3%. Best case scenario analysis shows that an error ?5% can be achieved for a ten-patient training set with MIX, an error ?7.4% for LIN, and an error ?6.9% for EXP. The error decreases with the increase in training set size, with the most marked decrease observed for MIX.Conclusions: The MIX model can predict the D{sub 2cc} of the organs at risk with an error lower than 5% with a training set of ten patients or greater. The model can be used in the development of quality assurance tools to identify treatment plans with suboptimal sparing of the organs at risk. It can also be used to improve preplanning and in the development of real-time intraoperative planning tools.

  12. High-pressure behavior and thermoelastic properties of niobium studied by in situ x-ray diffraction

    SciTech Connect (OSTI)

    Zou, Yongtao, E-mail: yongtao.zou@stonybrook.edu, E-mail: yongtaozou6@gmail.com; Li, Baosheng [Mineral Physics Institute, State University of New York, Stony Brook, New York 11794 (United States); Qi, Xintong [Department of Materials Science and Engineering, State University of New York, Stony Brook, New York 11794 (United States); Wang, Xuebing; Chen, Ting [Department of Geosciences, State University of New York, Stony Brook, New York 11794 (United States); Li, Xuefei [Mineral Physics Institute, State University of New York, Stony Brook, New York 11794 (United States); Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Siping 136000 (China); Welch, David [Department of Materials Science and Engineering, State University of New York, Stony Brook, New York 11794 (United States); Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973 (United States)

    2014-07-07T23:59:59.000Z

    In situ synchrotron energy dispersive x-ray diffraction (XRD) experiments on Nb have been conducted at pressures up to 6.4 GPa and temperatures up to 1073 K. From the pressure-volume-temperature measurements, thermoelastic parameters were derived for the first time for Nb based on the thermal pressure (?P{sub th}) equation of state (EOS), modified high-T Birch-Murnaghan EOS, and Mie-Grüneisen-Debye EOS. With the pressure derivative of the bulk modulus K{sub T}{sup ´} fixed at 4.0, we obtained the ambient isothermal bulk modulus K{sub T0}=174(5) GPa, the temperature derivative of bulk modulus at constant pressure (?K{sub T}/?T){sub P}=-0.060(8) GPa K?¹ and at constant volume (?K{sub T}/?T){sub V}=-0.046(8) GPa K?¹, the volumetric thermal expansivity ?{sub T}(T)=2.3(3)×10??+0.3(2)×10??T (K?¹), as well as the pressure dependence of thermal expansion (??/?P){sub T}=(?2.0±0.4)×10?? K?¹ GPa?¹. Fitting the present data to the Mie-Grüneisen-Debye EOS with Debye temperature ??=276.6 K gives ??=1.27(8) and K{sub T0}=171(3) GPa at a fixed value of q=3.0. The ambient isothermal bulk modulus and Grüneisen parameter derived from this work are comparable to previously reported values from both experimental and theoretical studies. An in situ high-resolution, angle dispersive XRD study on Nb did not indicate any anomalous behavior related to pressure-induced electronic topological transitions at ~5 GPa as has been reported previously.

  13. Synchrotron X-ray diffraction studies of phase transitions and mechanical properties of nanocrystalline materials at high pressure

    SciTech Connect (OSTI)

    Prilliman, Gerald Stephen

    2003-09-01T23:59:59.000Z

    The behavior of nanocrystals under extreme pressure was investigated using synchrotron x-ray diffraction. A major part of this investigation was the testing of a prototype synchrotron endstation on a bend magnet beamline at the Advanced Light Source for high pressure work using a diamond anvil cell. The experiments conducted and documented here helped to determine issues of efficiency and accuracy that had to be resolved before the construction of a dedicated ''super-bend'' beamline and endstation. The major conclusions were the need for a cryo-cooled monochromator and a fully remote-controllable pressurization system which would decrease the time to change pressure and greatly reduce the error created by the re-placement of the diamond anvil cell after each pressure change. Two very different types of nanocrystal systems were studied, colloidal iron oxide (Fe{sub 2}O{sub 3}) and thin film TiN/BN. Iron oxide nanocrystals were found to have a transition from the {gamma} to the {alpha} structure at a pressure strongly dependent on the size of the nanocrystals, ranging from 26 GPa for 7.2 nm nanocrystals to 37 GPa for 3.6 nm nanocrystals. All nanocrystals were found to remain in the {alpha} structure even after release of pressure. The transition pressure was also found, for a constant size (5.7 nm) to be strongly dependent on the degree of aggregation of the nanocrystals, increasing from 30 GPa for completely dissolved nanocrystals to 45 GPa for strongly aggregated nanocrystals. Furthermore, the x-ray diffraction pattern of the pressure induced {alpha} phase demonstrated a decrease in intensity for certain select peaks. Together, these observations were used to make a complete picture of the phase transition in nanocrystalline systems. The size dependence of the transition was interpreted as resulting from the extremely high surface energy of the {alpha} phase which would increase the thermodynamic offset and thereby increase the kinetic barrier to transition that must be overridden with pressure. The anomalous intensities in the x-ray diffraction patterns were interpreted as being the result of stacking faults, indicating that the mechanism of transition proceeds by the sliding of {gamma}(111) planes to form {alpha}(001) planes. The increasing transition pressure for more aggregated samples may be due to a positive activation volume, retarding the transition for nanocrystals with less excess (organic) volume available to them. The lack of a reverse transition upon decompression makes this interpretation more difficult because of the lack of an observable hysteresis, and it is therefore difficult to ascertain kinetic effects for certain. In the case TiN/BN nanocomposite systems, it was found that the bulk modulus (B{sub 0}) of the TiN nanoparticles was not correlated to the observed hardness or Young's modulus of the macroscopic thin film. This indicates that the origin of the observed super-hard nature of these materials is not due to any change in the Ti-N interatomic potential. Rather, the enhanced hardness must be due to nano-structural effects. It was also found that during pressurization the TiN nanoparticles developed a great deal of strain. This strain can be related to defects induced in individual nanoparticles which generates strain in adjacent particles due to the highly coupled nature of the system.

  14. Structure and magnetic properties of low-temperature phase Mn-Bi nanosheets with ultra-high coercivity and significant anisotropy

    SciTech Connect (OSTI)

    Liu, Rongming, E-mail: rmliu@iphy.ac.cn, E-mail: shenbg@iphy.ac.cn; Zhang, Ming; Niu, E; Li, Zhubai; Zheng, Xinqi; Wu, Rongrong; Zuo, Wenliang; Shen, Baogen; Hu, Fengxia; Sun, Jirong [State Key Laboratory for Magnetism, Institute of Physics, Chinese Academy of Sciences, Beijing 100190 (China)

    2014-05-07T23:59:59.000Z

    The microstructure, crystal structure, and magnetic properties of low-temperature phase (LTP) Mn-Bi nanosheets, prepared by surfactant assistant high-energy ball milling (SA-HEBM) with oleylamine and oleic acid as the surfactant, were examined with scanning electron microscopy, X-ray diffraction, and vibrating sample magnetometer, respectively. Effect of ball-milling time on the coercivity of LTP Mn-Bi nanosheets was systematically investigated. Results show that the high energy ball milling time from tens of minutes to several hours results in the coercivity increase of Mn-Bi powders and peak values of 14.3 kOe around 10 h. LTP Mn-Bi nanosheets are characterized by an average thickness of tens of nanometers, an average diameter of ?1.5??m, and possess a relatively large aspect ratio, an ultra-high room temperature coercivity of 22.3 kOe, a significant geometrical and magnetic anisotropy, and a strong (00l) crystal texture. Magnetization and demagnetization behaviors reveal that wall pinning is the dominant coercivity mechanism in these LTP Mn-Bi nanosheets. The ultrafine grain refinement introduced by the SA-HEBM process contribute to the ultra-high coercivity of LTP Mn-Bi nanosheets and a large number of defects put a powerful pinning effect on the magnetic domain movement, simultaneously. Further magnetic measurement at 437?K shows that a high coercivity of 17.8 kOe and a strong positive temperature coefficient of coercivity existed in the bonded permanent magnet made by LTP Mn-Bi nanosheets.

  15. P3.2. Climate change and agricultural production risks PI: P. Calanca1), J. Fuhrer (Deputy PI)1), Co-PI: B. Lehmann2)

    E-Print Network [OSTI]

    Richner, Heinz

    residues, soils may turn from a C sink to a source of atmospheric CO2. SOM stabilization depends on residue directly by more frequent and persistent dry spells and high temperatures, and indirectly through shifts (frequency/persistence) increase crop production risks by affecting physical and chemical properties

  16. Risk Management Strategy Introduction

    E-Print Network [OSTI]

    Edinburgh, University of

    Risk Management Strategy Introduction 1. The risk of adverse consequences is inherent in all activity. Dynamic enterprise will inevitably create new risks. Risk management is about ensuring that all significant relevant risks are understood and prioritised as part of normal management

  17. Mechanical properties of near-{gamma} titanium aluminides reinforced with high volume percentages of TiB{sub 2}

    SciTech Connect (OSTI)

    VanMeter, M.L. [Naval Air Warfare center, Patuxent River, MD (United States). Aircraft Div.] [Naval Air Warfare center, Patuxent River, MD (United States). Aircraft Div.; Kampe, S.L. [Virginia Polytechnic Inst. and State Univ., Blacksburg, VA (United States)] [Virginia Polytechnic Inst. and State Univ., Blacksburg, VA (United States); Christodoulou, L. [Imperial Coll. of Science, Technology, and Medicine, London (United Kingdom)] [Imperial Coll. of Science, Technology, and Medicine, London (United Kingdom)

    1996-04-15T23:59:59.000Z

    Near-{gamma} ({alpha}{sub 2}-Ti{sub 3}Al + {gamma}-TiAl) titanium aluminide intermetallic compounds are presently undergoing extensive development as potential lower-density substitutes for conventional high temperature metallic alloys. In this article the authors describe the mechanical behavior of a series of binary near-{gamma} titanium aluminides (i.e., Ti-xAl, where x {approx} 43--48 atomic percent) reinforced with 40--50 volume percent (v%) of a discontinuous dispersion of titanium diboride (TiB{sub 2}) particulate. The composites were synthesized via XD{reg_sign} processing, and subsequently consolidated into bulk form using conventional powder metallurgy (P/M) techniques. For composites comprised of such large volume percentages of ceramic, it is suggested and will be shown that it is most appropriate to evaluate and offer a perspective of their evolved mechanical behavior through their comparison to traditional structural ceramics, e.g., silicon carbide (SiC) and alumina (Al{sub 2}O{sub 3}).

  18. Spectral and variability properties of LS 5039 from radio to very high-energy gamma-rays

    E-Print Network [OSTI]

    Bosch-Ramon, V; Romero, G E

    2006-01-01T23:59:59.000Z

    Microquasars are X-ray binaries with relativistic jets. The microquasar LS 5039 turned out to be the first high-energy gamma-ray microquasar candidate due to its likely association with the EGRET source 3EG J1824-1514. Further theoretical studies supported this association, which could be extended to other EGRET sources. Very recently, Aharonian et al. (2005) have communicated the detection of the microquasar LS 5039 at TeV energies. This fact confirms the EGRET source association and leaves no doubt about the gamma-ray emitting nature of this object. The aim of the present work is to show that, applying a cold-matter dominated jet model to LS 5039, we can reproduce many of the spectral and variability features observed in this source. Jet physics is explored, and some physical quantities are estimated as a by-product of the performed modeling. Although at the moment only LS 5039 has been detected on the entire electromagnetic spectrum, it does not seem unlikely that other microquasars will show similar spect...

  19. RAMS (Risk Analysis - Modular System) methodology

    SciTech Connect (OSTI)

    Stenner, R.D.; Strenge, D.L.; Buck, J.W. [and others

    1996-10-01T23:59:59.000Z

    The Risk Analysis - Modular System (RAMS) was developed to serve as a broad scope risk analysis tool for the Risk Assessment of the Hanford Mission (RAHM) studies. The RAHM element provides risk analysis support for Hanford Strategic Analysis and Mission Planning activities. The RAHM also provides risk analysis support for the Hanford 10-Year Plan development activities. The RAMS tool draws from a collection of specifically designed databases and modular risk analysis methodologies and models. RAMS is a flexible modular system that can be focused on targeted risk analysis needs. It is specifically designed to address risks associated with overall strategy, technical alternative, and `what if` questions regarding the Hanford cleanup mission. RAMS is set up to address both near-term and long-term risk issues. Consistency is very important for any comparative risk analysis, and RAMS is designed to efficiently and consistently compare risks and produce risk reduction estimates. There is a wide range of output information that can be generated by RAMS. These outputs can be detailed by individual contaminants, waste forms, transport pathways, exposure scenarios, individuals, populations, etc. However, they can also be in rolled-up form to support high-level strategy decisions.

  20. BUILDING A RISK MANAGEMENT PLAN BUILDING A RISK MANAGEMENT PL LDING A RISK MANAGEMENT PLAN BUILDING A RISK MANAGEMENT PLAN

    E-Print Network [OSTI]

    Florida, University of

    BUILDING A RISK MANAGEMENT PLAN BUILDING A RISK MANAGEMENT PL LDING A RISK MANAGEMENT PLAN BUILDING A RISK MANAGEMENT PLAN MANAGEMENT PLAN BUILDING A RISK MANAGEMENT PLAN BUILDING A R RISK MANAGEMENT PLAN BUILDING A RISK MANAGEMENT PLAN BUILDIN T PLAN BUILDING A RISK MANAGEMENT PLAN BUILDING A RISK MANAGEM

  1. Calculation of the thermodynamic properties at elevated temperatures and pressures of saturated and aromatic high molecular weight solid and liquid hydrocarbons in kerogen, bitumen, petroleum, and other organic matter of biogeochemical interest

    SciTech Connect (OSTI)

    Richard, L.; Helgeson, H.C. [Univ. of California, Berkeley, CA (United States). Dept. of Geology and Geophysics] [Univ. of California, Berkeley, CA (United States). Dept. of Geology and Geophysics

    1998-12-01T23:59:59.000Z

    To supplement the relatively sparse set of calorimetric data available for the multitude of high molecular weight organic compounds of biogeochemical interest, group additivity algorithms have been developed to estimate heat capacity power function coefficients and the standard molal thermodynamic properties at 25 C and 1 bar of high molecular weight compounds in hydrocarbon source rocks and reservoirs, including crystalline and liquid isoprenoids, steroids, tricyclic diterpenoids, hopanoids, and polynuclear aromatic hydrocarbons. A total of ninety-six group contributions for each coefficient and property were generated from the thermodynamic properties of lower molecular weight reference species for which calorimetric data are available in the literature. These group contributions were then used to compute corresponding coefficients and properties for {approximately}360 representative solid and liquid high molecular weight compounds in kerogen, bitumen, and petroleum for which few or no experimental data are available. The coefficients and properties of these high molecular weight compounds are summarized in tables, together with those of the groups and reference species from which they were generated. The tabulated heat capacity power function coefficients and standard molal thermodynamic properties at 25 C and 1 bar include selected crystalline and liquid regular, irregular and highly branched isoprenoids, tricyclic diterpanes, 17{alpha}(H)- and 17{beta}(H)-hopanes, 5{alpha}(H),14{alpha}(H)-, 5{beta}(H),14{alpha}(H)-, 5{alpha}(H),14{beta}(H)-, and 5{beta}(H),14{beta}(H)-steranes, double ether- and ester-bonded n-alkanes, and various polynuclear aromatic hydrocarbons, including methylated biphenyls, naphthalenes, phenanthrenes, anthracenes, pyrenes, and chrysenes. However, corresponding coefficients and properties for many more saturated and unsaturated high molecular weight hydrocarbons can be estimated from the equations of state group additivity algorithms. Calculations of this kind permit comprehensive thermodynamic description of the chemical evolution of organic matter with increasing depth in sedimentary basins.

  2. Enterprise Risk Management Framework

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Framework The Enterprise Risk Management (ERM) framework includes four steps: identify the risks, determine the probability and impact of each one, identify controls that are...

  3. The effects of high temperature processing on the structural and optical properties of oxygenated CdS window layers in CdTe solar cells

    SciTech Connect (OSTI)

    Paudel, Naba R.; Grice, Corey R.; Xiao, Chuanxiao; Yan, Yanfa [Department of Physics and Astronomy, and Wright Center for Photovoltaics Innovation and Commercialization, The University of Toledo, Toledo, Ohio 43606 (United States)

    2014-07-28T23:59:59.000Z

    High efficiency CdTe solar cells typically use oxygenated CdS (CdS:O) window layers. We synthesize CdS:O window layers at room temperature (RT) and 270?°C using reactive sputtering. The band gaps of CdS:O layers deposited at RT increase when O{sub 2}/(O{sub 2}?+?Ar) ratios in the deposition chamber increase. On the other hand, the band gaps of CdS:O layers deposited at 270?°C decrease as the O{sub 2}/(O{sub 2}?+?Ar) ratios increase. Interestingly, however, our high temperature closed-space sublimation (CSS) processed CdTe solar cells using CdS:O window layers deposited at RT and 270?°C exhibit very similar cell performance, including similar short-circuit current densities. To understand the underlying reasons, CdS:O thin films deposited at RT and 270?°C are annealed at temperatures that simulate the CSS process of CdTe deposition. X-ray diffraction, atomic force microscopy, and UV-visible light absorption spectroscopy characterization of the annealed films reveals that the CdS:O films deposited at RT undergo grain regrowth and/or crystallization and exhibit reduced band gaps after the annealing. Our results suggest that CdS:O thin films deposited at RT and 270?°C should exhibit similar optical properties after the deposition of CdTe layers, explaining the similar cell performance.

  4. Quantum risk-sensitive estimation and robustness

    E-Print Network [OSTI]

    Naoki Yamamoto; Luc Bouten

    2008-03-31T23:59:59.000Z

    This paper studies a quantum risk-sensitive estimation problem and investigates robustness properties of the filter. This is a direct extension to the quantum case of analogous classical results. All investigations are based on a discrete approximation model of the quantum system under consideration. This allows us to study the problem in a simple mathematical setting. We close the paper with some examples that demonstrate the robustness of the risk-sensitive estimator.

  5. Irregularly Spaced Intraday Value at Risk (ISIVaR) Models

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ) quanti...es market risk at an intraday time horizon, using Normal GARCH, Student GARCH, Risk- known as the Ultra-High-Frequency GARCH (UHF-GARCH) model of Engle (2000)- such that unequally spaced Va

  6. Global Climate & Catastrophic Risk

    E-Print Network [OSTI]

    de Lijser, Peter

    Global Climate & Catastrophic Risk Forum 2012 A Joint Program with LA RIMS Education Day Rethinking Catastrophic Risk in Risk Management: Earthquake-Related Challenges Featuring: Keynote Speaker Dr. Frank Beuthin, Willis Group Holdings Plc. Yohei Miyamoto, Aon Risk Solutions Curtis deVera, Marsh

  7. High-Temperature Thermoelectric Properties of the Solid–Solution Zintl Phase Eu11Cd6Sb12–xAsx (x < 3)

    SciTech Connect (OSTI)

    Kazem, Nasrin; Xie, Weiwei; Ohno, Saneyuki; Zevalkink, Alexandra; Miller, Gordon J; Snyder, G Jeffrey; Kauzlarich, Susan M

    2014-02-11T23:59:59.000Z

    Zintl phases are compounds that have shown promise for thermoelectric applications. The title solid–solution Zintl compounds were prepared from the elements as single crystals using a tin flux for compositions x = 0, 1, 2, and 3. Eu11Cd6Sb12–xAsx (x < 3) crystallize isostructurally in the centrosymmetric monoclinic space group C2/m (no. 12, Z = 2) as the Sr11Cd6Sb12 structure type (Pearson symbol mC58). Efforts to make the As compositions for x exceeding ?3 resulted in structures other than the Sr11Cd6Sb12 structure type. Single-crystal X-ray diffraction indicates that As does not randomly substitute for Sb in the structure but is site specific for each composition. The amount of As determined by structural refinement was verified by electron microprobe analysis. Electronic structures and energies calculated for various model structures of Eu11Cd6Sb10As2 (x = 2) indicated that the preferred As substitution pattern involves a mixture of three of the six pnicogen sites in the asymmetric unit. In addition, As substitution at the Pn4 site opens an energy gap at the Fermi level, whereas substitution at the other five pnicogen sites remains semimetallic with a pseudo gap. Thermoelectric properties of these compounds were measured on hot-pressed, fully densified pellets. Samples show exceptionally low lattice thermal conductivities from room temperature to 775 K: 0.78–0.49 W/mK for x = 0; 0.72–0.53 W/mK for x = 1; and 0.70–0.56 W/mK for x = 2. Eu11Cd6Sb12 shows a high p-type Seebeck coefficient (from +118 to 153 ? V/K) but also high electrical resistivity (6.8 to 12.8 m?·cm). The value of zT reaches 0.23 at 774 K. The properties of Eu11Cd6Sb12–xAsx are interpreted in discussion with the As site substitution.

  8. RISK ASSESSMENT FORM FIELD / LOCATION WORK

    E-Print Network [OSTI]

    Lummaa, Virpi

    the work. Detail such risks in the final section. ENVIRONMENT The environment always represents a safety weather, illness, hypothermia, assault, getting lost. Is the risk high/medium/low? CONTROL MEASURES environment trained leaders accompany the trip refuge is available work in outside organisations is subject

  9. Risk stratification by analysis of electrocardiographic morphology following acute coronary syndromes

    E-Print Network [OSTI]

    Sung, Philip Pohong

    2009-01-01T23:59:59.000Z

    Patients who have suffered an acute coronary syndrome (ACS) are at elevated risk of future adverse events, including fatal arrhythmias or myocardial infarction. Risk stratification--he identification of high-risk patients--s ...

  10. Assessing the feasibility of volumetric-modulated arc therapy using simultaneous integrated boost (SIB-VMAT): An analysis for complex head-neck, high-risk prostate and rectal cancer cases

    SciTech Connect (OSTI)

    Cilla, Savino, E-mail: savinocilla@gmail.com [Medical Physics Unit, Fondazione di ricerca e cura “Giovanni Paolo II,” Università Cattolica del Sacro Cuore, Campobasso (Italy); Deodato, Francesco; Digesù, Cinzia; Macchia, Gabriella; Picardi, Vincenzo; Ferro, Marica [Radiation Oncology Unit, Fondazione di ricerca e cura “Giovanni Paolo II,” Università Cattolica del Sacro Cuore, Campobasso (Italy); Sallustio, Giuseppina [Radiology Unit, Fondazione di ricerca e cura “Giovanni Paolo II,” Università Cattolica del Sacro Cuore, Campobasso (Italy); De Spirito, Marco; Piermattei, Angelo [Physics Institute, Università Cattolica del Sacro Cuore, Rome (Italy); Morganti, Alessio G. [Radiation Oncology Unit, Fondazione di ricerca e cura “Giovanni Paolo II,” Università Cattolica del Sacro Cuore, Campobasso (Italy)

    2014-04-01T23:59:59.000Z

    Intensity-modulated radiotherapy (IMRT) allowed the simultaneous delivery of different doses to different target volumes within a single fraction, an approach called simultaneous integrated boost (SIB). As consequence, the fraction dose to the boost volume can be increased while keeping low doses to the elective volumes, and the number of fractions and overall treatment time will be reduced, translating into better radiobiological effectiveness. In recent years, volumetric-modulated arc therapy (VMAT) has been shown to provide similar plan quality with respect to fixed-field IMRT but with large reduction in treatment time and monitor units (MUs) number. However, the feasibility of VMAT when used with SIB strategy has few investigations to date. We explored the potential of VMAT in a SIB strategy for complex cancer sites. A total of 15 patients were selected, including 5 head-and-neck, 5 high-risk prostate, and 5 rectal cancer cases. Both a double-arc VMAT and a 7-field IMRT plan were generated for each case using Oncentra MasterPlan treatment planning system for an Elekta Precise linac. Dosimetric indexes for targets and organs at risk (OARs) were compared based on dose-volume histograms. Conformity index, homogeneity index, and dose-contrast index were used for target analyses. The equivalent uniform doses and the normal tissue complication probabilities were calculated for main OARs. MUs number and treatment time were analyzed to score treatment efficiency. Pretreatment dosimetry was performed using 2-dimensional (2D)-array dosimeter. SIB-VMAT plans showed a high level of fluence modulation needed for SIB treatments, high conformal dose distribution, similar target coverage, and a tendency to improve OARs sparing compared with the benchmark SIB-IMRT plans. The median treatment times reduced from 13 to 20 minutes to approximately 5 minutes for all cases with SIB-VMAT, with a MUs reduction up to 22.5%. The 2D-array ion-chambers' measurements reported an agreement of more than 95% for a criterion of 3% to 3 mm. SIB-VMAT was able to combine the advantages of conventional SIB-IMRT with its highly conformal dose distribution and OARs sparing and the advantages of 3D-conformal radiotherapy with its fast delivery.

  11. Effects of high energy electrons on the properties of polyethylene / multiwalled carbon nanotubes composites: Comparison of as-grown and oxygen-functionalised MWCNT

    SciTech Connect (OSTI)

    Krause, B., E-mail: krause-beate@ipfdd.de, E-mail: poe@ipfdd.de, E-mail: gohs@ipfdd.de; Pötschke, P., E-mail: krause-beate@ipfdd.de, E-mail: poe@ipfdd.de, E-mail: gohs@ipfdd.de; Gohs, U., E-mail: krause-beate@ipfdd.de, E-mail: poe@ipfdd.de, E-mail: gohs@ipfdd.de [Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Str. 6, 01069 Dresden (Germany)

    2014-05-15T23:59:59.000Z

    Polymer modification with high energy electrons (EB) is well established in different applications for many years. It is used for crosslinking, curing, degrading, grafting of polymeric materials and polymerisation of monomers. In contrast to this traditional method, electron induced reactive processing (EIReP) combines the polymer modification with high energy electrons and the melt mixing process. This novel reactive method was used to prepare polymer blends and composites. In this study, both methods were used for the preparation of polyethylene (PE)/ multiwalled carbon nanotubes (MWCNT) composites in the presence of a coupling agent. The influence of MWCNT and type of electron treatment on the gel content, the thermal conductivity, rheological, and electrical properties was investigated whereby as-grown and oxidised MWCNT were used. In the presence of a coupling agent and at an absorbed dose of 40 kGy, the gel content increased from 57 % for the pure PE to 74 % or 88 % by the addition of as-grown (Baytubes® C150P) or oxidised MWCNT, respectively. In comparison to the composites containing the as-grown MWCNTs, the use of the oxidised MWCNTs led to higher melt viscosity and higher storage modulus due to higher yield of filler polymer couplings. The melt viscosity increased due to the addition of MWCNT and crosslinking of PE. The thermal conductivity increased to about 150 % and showed no dependence on the kind of MWCNT and the type of electron treatment. In contrast, the lowest value of electrical volume resistivity was found for the non-irradiated samples and after state of the art electron treatment without any influence of the type of MWCNT. In the case of EIReP, the volume resistivity increased by 2 (as-grown MWCNT) or 3 decades (oxidised MWCNT) depending on the process parameters.

  12. Mechanical properties of ZrB2- and HfB2-based ultra-high temperature ceramics fabricated by spark plasma sintering

    SciTech Connect (OSTI)

    Zapata-Solvas, E. [Imperial College, London; Jayaseelan, D. [Imperial College, London; Lin, Hua-Tay [ORNL; Brown, P. [DSTL, Porton Down, Salisbury, Wiltshire, UK; Lee, W.E. [Imperial College, London

    2013-01-01T23:59:59.000Z

    Flexural strengths at room temperature, at 1400 C in air and at room temperature after 1 h oxidation at 1400 C were determined for ZrB2- and HfB2-based ultra-high temperature ceramics (UHTCs). Defects caused by electrical discharge machining (EDM) lowered measured strengths significantly and were used to calculate fracture toughness via a fracture mechanics approach. ZrB2 with 20 vol.% SiC had room temperature strength of 700 90 MPa, fracture toughness of 6.4 0.6 MPa, Vickers hardness at 9.8 N load of 21.1 0.6 GPa, 1400 C strength of 400 30 MPa and room temperature strength after 1 h oxidation at 1400 C of 678 15 MPa with an oxide layer thickness of 45 5 m. HfB2 with 20 vol.% SiC showed room temperature strength of 620 50 MPa, fracture toughness of 5.0 0.4 MPa, Vickers hardness at 9.8 N load of 27.0 0.6 GPa, 1400 C strength of 590 150 MPa and room temperature strength after 1 h oxidation at 1400 C of 660 25 MPa with an oxide layer thickness of 12 1 m. 2 wt.% La2O3 addition to UHTCs slightly reduced mechanical performance while increasing tolerance to property degradation after oxidation and effectively aided internal stress relaxation during spark plasma sintering (SPS) cooling, as quantified by X-ray diffraction (XRD). Slow crack growth was suggested as the failure mechanism at high temperatures as a consequence of sharp cracks formation during oxidation.

  13. Risk-based budgeting for maintenance dredging

    SciTech Connect (OSTI)

    Walsh, M.R.; Moser, D.A. [Army Corps of Engineers, Ft. Belvoir, VA (United States). Inst. for Water Resources

    1994-12-31T23:59:59.000Z

    The US Army Corps of Engineers must estimate the budget required to conduct maintenance dredging at hundreds of sites across the country. The amount of funds needed to do the maintenance dredging is highly uncertain and there are risks associated with overestimates and underestimates. A risk-based approach to the budgeting process for maintenance dredging can help identify the uncertainty and assess and manage the associated risk. A concept and preliminary plan for a risk-based approach for developing budgets for maintenance dredging is presented.

  14. High temperature phase stabilities and electrochemical properties of InBaCo4-xZnxO7 cathodes for intermediate temperature solid oxide fuel cells

    SciTech Connect (OSTI)

    Kim, Jung-Hyun [ORNL; Young Nam, Kim [University of Texas, Austin; Bi, Zhonghe [ORNL; Manthiram, Arumugam [University of Texas, Austin; Paranthaman, Mariappan Parans [ORNL; Huq, Ashfia [ORNL

    2011-01-01T23:59:59.000Z

    InBaCo4-xZnxO7 oxides have been synthesized and characterized as cathode materials for intermediate temperature solid oxide fuel cells (IT-SOFC). The effect of Zn substitution for Co on the structure, phase stability, thermal expansion, and electrochemical properties of the InBaCo4-xZnxO7 has been investigated. The increase in the Zn content from x = 1 to 1.5 improves the high temperature phase stability at 600 oC and 700 oC for 100 h, and chemical stability against a Gd0.2Ce0.8O1.9 (GDC) electrolyte. Thermal expansion coefficient (TEC) values of the InBaCo4-xZnxO7 (x = 1, 1.5, 2) specimens were determined to be 8.6 10-6 9.6 10-6 /oC in the range of 80 900 oC, which provides good thermal expansion compatibility with the standard SOFC electrolyte materials. The InBaCo4-xZnxO7 + GDC (50:50 wt. %) composite cathodes exhibit improved cathode performances compared to those obtained from the simple InBaCo4-xZnxO7 cathodes due to the extended triple-phase boundary (TPB) and enhanced oxide-ion conductivity through the GDC portion in the composites.

  15. Influence of Ar/Kr ratio and pulse parameters in a Cr-N high power pulse magnetron sputtering process on plasma and coating properties

    SciTech Connect (OSTI)

    Bobzin, Kirsten; Bagcivan, Nazlim; Theiß, Sebastian; Trieschmann, Jan; Brugnara, Ricardo Henrique, E-mail: brugnara@iot.rwth-aachen.de [Surface Engineering Institute, RWTH Aachen University, D-52072 Aachen (Germany); Preissing, Sven; Hecimovic, Ante [Institute of Experimental Physics II, Research Department Plasmas with Complex Interactions, Ruhr-University Bochum, D- 44780 Bochum (Germany)

    2014-03-15T23:59:59.000Z

    Krypton is sometimes used in physical vapor deposition processes due to its greater atomic mass and size compared to argon, which leads to a lower gas incorporation and may have beneficial effects on kinetics of the coating growth. In this paper, the authors investigate the plasma composition and properties of deposited high power pulse magnetron sputtering Cr-N coatings for discharges with various Ar/Kr ratios and for various pulse lengths of 40??s, 80??s, and 200??s, keeping the average discharge power constant. The results show that an addition of Kr influences the discharge process by altering the ignition and peak values of the discharge current. This influences the metal ion generation and growth conditions on the substrate by reducing the nucleation site densities, leading to a predominantly columnar grow. However, the deposition rate is highest for an Ar/Kr ratio of 120/80. The integral of the metal ion and atom emission exhibits the same trend, having a maximum for Ar/Kr ratio of 120/80. By decreasing the pulse length, the deposition rate of coatings decreases, while the hardness increases.

  16. Effect of reactor pressure on the electrical and structural properties of InN epilayers grown by high-pressure chemical vapor deposition

    E-Print Network [OSTI]

    Nabben, Reinhard

    Effect of reactor pressure on the electrical and structural properties of InN epilayers grown://avspublications.org/jvsta/about/rights_and_permissions #12;Effect of reactor pressure on the electrical and structural properties of InN epilayers grown-atmospheric reactor pressures (2.5­18.5 bar) on the electrical and structural properties of InN epilayers deposited

  17. Gasbuggy Site Assessment and Risk Evaluation

    SciTech Connect (OSTI)

    None

    2011-03-01T23:59:59.000Z

    The Gasbuggy site is in northern New Mexico in the San Juan Basin, Rio Arriba County (Figure 1-1). The Gasbuggy experiment was designed to evaluate the use of a nuclear detonation to enhance natural gas production from the Pictured Cliffs Formation, a tight, gas-bearing sandstone formation. The 29-kiloton-yield nuclear device was placed in a 17.5-inch wellbore at 4,240 feet (ft) below ground surface (bgs), approximately 40 ft below the Pictured Cliffs/Lewis shale contact, in an attempt to force the cavity/chimney formed by the detonation up into the Pictured Cliffs Sandstone. The test was conducted below the southwest quarter of Section 36, Township 29 North, Range 4 West, New Mexico Principal Meridian. The device was detonated on December 10, 1967, creating a 335-ft-high chimney above the detonation point and a cavity 160 ft in diameter. The gas produced from GB-ER (the emplacement and reentry well) during the post-detonation production tests was radioactive and diluted, primarily by carbon dioxide. After 2 years, the energy content of the gas had recovered to 80 percent of the value of gas in conventionally developed wells in the area. There is currently no technology capable of remediating deep underground nuclear detonation cavities and chimneys. Consequently, the U.S. Department of Energy (DOE) must continue to manage the Gasbuggy site to ensure that no inadvertent intrusion into the residual contamination occurs. DOE has complete control over the 1/4 section (160 acres) containing the shot cavity, and no drilling is permitted on that property. However, oil and gas leases are on the surrounding land. Therefore, the most likely route of intrusion and potential exposure would be through contaminated natural gas or contaminated water migrating into a producing natural gas well outside the immediate vicinity of ground zero. The purpose of this report is to describe the current site conditions and evaluate the potential health risks posed by the most plausible contaminant exposure scenario, drilling of natural gas wells near the site. The results of this risk evaluation will guide DOE's future surveillance and monitoring activities in the area to ensure that site conditions are adequately protective of human health. This evaluation is not a comprehensive risk assessment for the site; it is intended to provide assurance that DOE's monitoring approach can detect the presence of site-related contamination at levels well below those that would pose an unacceptable risk to human health.

  18. A Treatment Planning and Acute Toxicity Comparison of Two Pelvic Nodal Volume Delineation Techniques and Delivery Comparison of Intensity-Modulated Radiotherapy Versus Volumetric Modulated Arc Therapy for Hypofractionated High-Risk Prostate Cancer Radiotherapy

    SciTech Connect (OSTI)

    Myrehaug, Sten [Department of Radiation Oncology, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario (Canada); Department of Radiation Oncology, Princess Margaret Hospital, University of Toronto, Toronto, Ontario (Canada); Chan, Gordon [Department of Radiation Oncology, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario (Canada); Craig, Tim [Department of Radiation Oncology, Princess Margaret Hospital, University of Toronto, Toronto, Ontario (Canada); Weinberg, Vivian [Biostatistics Core, Helen Diller Family Comprehensive Cancer Center, University of California San Francisco, San Francisco, CA (United States); Cheng, Chun [Department of Radiation Oncology, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario (Canada); Roach, Mack [Department of Radiation Oncology, University of California San Francisco, San Francisco, CA (United States); Cheung, Patrick [Department of Radiation Oncology, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario (Canada); Sahgal, Arjun, E-mail: arjun.sahgal@sunnybrook.ca [Department of Radiation Oncology, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario (Canada); Department of Radiation Oncology, Princess Margaret Hospital, University of Toronto, Toronto, Ontario (Canada)

    2012-03-15T23:59:59.000Z

    Purpose: To perform a comparison of two pelvic lymph node volume delineation strategies used in intensity-modulated radiotherapy (IMRT) for high risk prostate cancer and to determine the role of volumetric modulated arc therapy (VMAT). Methods and Materials: Eighteen consecutive patients accrued to an ongoing clinical trial were identified according to either the nodal contouring strategy as described based on lymphotropic nanoparticle-enhanced magnetic resonance imaging technology (9 patients) or the current Radiation Therapy Oncology Group (RTOG) consensus guidelines (9 patients). Radiation consisted of 45 Gy to prostate, seminal vesicles, and lymph nodes, with a simultaneous integrated boost to the prostate alone, to a total dose of 67.5 Gy delivered in 25 fractions. Prospective acute genitourinary and gastrointestinal toxicities were compared at baseline, during radiotherapy, and 3 months after radiotherapy. Each patient was retrospectively replanned using the opposite method of nodal contouring, and plans were normalized for dosimetric comparison. VMAT plans were also generated according to the RTOG method for comparison. Results: RTOG plans resulted in a significantly lower rate of genitourinary frequency 3 months after treatment. The dosimetric comparison showed that the RTOG plans resulted in both favorable planning target volume (PTV) coverage and lower organs at risk (OARs) and integral (ID) doses. VMAT required two to three arcs to achieve adequate treatment plans, we did not observe consistent dosimetric benefits to either the PTV or the OARs, and a higher ID was observed. However, treatment times were significantly shorter with VMAT. Conclusion: The RTOG guidelines for pelvic nodal volume delineation results in favorable dosimetry and acceptable acute toxicities for both the target and OARs. We are unable to conclude that VMAT provides a benefit compared with IMRT.

  19. Results of a Quality Assurance Review of External Beam Radiation Therapy in the International Society of Paediatric Oncology (Europe) Neuroblastoma Group's High-risk Neuroblastoma Trial: A SIOPEN Study

    SciTech Connect (OSTI)

    Gaze, Mark N., E-mail: mark.gaze@uclh.nhs.uk [Department of Oncology, University College London Hospitals NHS Foundation Trust, London (United Kingdom); Boterberg, Tom [Department of Radiation Oncology, Ghent University Hospital, Ghent (Belgium)] [Department of Radiation Oncology, Ghent University Hospital, Ghent (Belgium); Dieckmann, Karin; Hoermann, Marcus [General Hospital Vienna, Medical University Vienna (Austria)] [General Hospital Vienna, Medical University Vienna (Austria); Gains, Jennifer E.; Sullivan, Kevin P. [Department of Oncology, University College London Hospitals NHS Foundation Trust, London (United Kingdom)] [Department of Oncology, University College London Hospitals NHS Foundation Trust, London (United Kingdom); Ladenstein, Ruth [Children's Cancer Research Institute, St. Anna Children's Hospital, Vienna (Austria)] [Children's Cancer Research Institute, St. Anna Children's Hospital, Vienna (Austria)

    2013-01-01T23:59:59.000Z

    Purpose: Radiation therapy is important for local control in neuroblastoma. This study reviewed the compliance of plans with the radiation therapy guidelines of the International Society of Paediatric Oncology (Europe) Neuroblastoma Group (SIOPEN) High-Risk Trial protocol. Methods and Materials: The SIOPEN trial central electronic database has sections to record diagnostic imaging and radiation therapy planning data. Individual centers may upload data remotely, but not all centers involved in the trial chose to use this system. A quality scoring system was devised based on how well the radiation therapy plan matched the protocol guidelines, to what extent deviations were justified, and whether adverse effects may result. Central review of radiation therapy planning was undertaken retrospectively in 100 patients for whom complete diagnostic and treatment sets were available. Data were reviewed and compared against protocol guidelines by an international team of radiation oncologists and radiologists. For each patient in the sample, the central review team assigned a quality assurance score. Results: It was found that in 48% of patients there was full compliance with protocol requirements. In 29%, there were deviations for justifiable reasons with no likely long-term adverse effects resulting. In 5%, deviations had occurred for justifiable reasons, but that might result in adverse effects. In 1%, there was a deviation with no discernible justification, which would not lead to long-term adverse events. In 17%, unjustified deviations were noted, with a risk of an adverse outcome resulting. Conclusions: Owing to concern over the proportion of patients in whom unjustified deviations were observed, a protocol amendment has been issued. This offers the opportunity for central review of radiation therapy plans before the start of treatment and the treating clinician a chance to modify plans.

  20. Correlation Between Structure and Thermoelectric Properties of...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Correlation Between Structure and Thermoelectric Properties of Bulk High Performance Materials for Energy Conversion Correlation Between Structure and Thermoelectric Properties of...

  1. The Development of an Effective Transportation Risk Assessment Model for Analyzing the Transport of Spent Fuel and High-Level Radioactive Waste to the Proposed Yucca Mountain Repository

    SciTech Connect (OSTI)

    McSweeney; Thomas; Winnard; Ross; Steven B.; Best; Ralph E.

    2001-02-06T23:59:59.000Z

    Past approaches for assessing the impacts of transporting spent fuel and high-level radioactive waste have not been effectively implemented or have used relatively simple approaches. The Yucca Mountain Draft Environmental Impact Statement (DEIS) analysis considers 83 origins, 34 fuel types, 49,914 legal weight truck shipments, 10,911 rail shipments, consisting of 59,250 shipment links outside Nevada (shipment kilometers and population density pairs through urban, suburban or rural zones by state), and 22,611 shipment links in Nevada. There was additional complexity within the analysis. The analysis modeled the behavior of 41 isotopes, 1091 source terms, and used 8850 food transfer factors (distinct factors by isotope for each state). The model also considered different accident rates for legal weight truck, rail, and heavy haul truck by state, and barge by waterway. To capture the all of the complexities of the transportation analysis, a Microsoft{reg_sign} Access database was created. In the Microsoft{reg_sign} Access approach the data is placed in individual tables and equations are developed in queries to obtain the overall impacts. While the query might be applied to thousands of table entries, there is only one equation for a particular impact. This greatly simplifies the validation effort. Furthermore, in Access, data in tables can be linked automatically using query joins. Another advantage built into MS Access is nested queries, or the ability to develop query hierarchies. It is possible to separate the calculation into a series of steps, each step represented by a query. For example, the first query might calculate the number of shipment kilometers traveled through urban, rural and suburban zones for all states. Subsequent queries could join the shipment kilometers query results with another table containing the state and mode specific accident rate to produce accidents by state. One of the biggest advantages of the nested queries is in validation. Temporarily restricting the query to one origin, one shipment, or one state and validating that the query calculation is returning the expected result allows simple validation. The paper will show the flexibility of the assessment tool to consider a wide variety of impacts. Through the use of pre-designed queries, impacts by origin, mode, fuel type or many other parameters can be obtained.

  2. Probing Structure-Property Relationship of Energy Storage Materials Using Ex-Situ, In-Situ Dynamic Microscopy and Spectroscopy with High Spatial and Fast Temporal Resolution

    E-Print Network [OSTI]

    Probing Structure-Property Relationship of Energy Storage Materials Using Ex-Situ, In-Situ Dynamic, chemistry, and properties of energy storage materials Find general guiding principle for accelerated-situ chemical imaging and spectroscopic study of structure and chemical evolution of new energy storage

  3. Rangeland Risk Management for Texans: Types of Risk

    E-Print Network [OSTI]

    White, Larry D.; Hanselka, C. Wayne

    2000-11-01T23:59:59.000Z

    Types of risk associated with range ecosystems include climatic, biological, financial and political risks. These risks are explained so that managers can know how to handle them....

  4. Risk Dynamics?An Analysis for the Risk of Change

    E-Print Network [OSTI]

    Huang, Tailin

    2010-01-01T23:59:59.000Z

    Bookstaber, R. (1999). "Risk Management in ComplexG. E. (2004). "How Useful Is Quantitative Risk Assessment?"Risk Analysis, Aubrey, A. (2010). "Preventing Diabetes:

  5. Finance and Risk & ENGINEERING

    E-Print Network [OSTI]

    Aronov, Boris

    Finance and Risk & ENGINEERING Charles S. Tapiero Department Head and Morton and Angela Topfer · Corporate Finance and Financial Markets · Computational Finance · Risk Finance · Technology and Algorithmic Finance A Collective Leadership Students participation #12;RESEARCH STRENGTHS · Black Swans and Fragility

  6. Predicting the risk of extinction from shared ecological characteristics

    E-Print Network [OSTI]

    Kotiaho, Janne S.

    an ecological extinction risk rank and predicted which of the currently nonthreatened species are at the highest risk of extinction. Our analysis reveals that two species currently classified as nonthreatened are, in fact, at high risk of extinction, and that the status of a further five species should be reconsidered

  7. Sandia Energy - Security Risk Assessment

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Security Risk Assessment Home Climate & Earth Systems WaterEnergy Nexus Water Monitoring & Treatment Technology Security Risk Assessment Security Risk Assessmentcwdd2015-05-04T21:...

  8. Subjective Risk, Confidence, and Ambiguity

    E-Print Network [OSTI]

    Traeger, Christian P.

    2011-01-01T23:59:59.000Z

    Paper 1103) Subjective Risk, Confidence, and Ambiguityby author(s). Subjective Risk, Con?dence, and Ambiguity ?567. Ellsberg, D. (1961), ‘Risk, ambiguity and the savage

  9. Essays in time and risk

    E-Print Network [OSTI]

    Sprenger, Charles

    2011-01-01T23:59:59.000Z

    4.4.1 Risk Attitudes . . . . . . . . . . . . . . . . .3.3.1 Additional Risk Preference Measures . . . . . . . .An Endowment Effect for Risk: Experimental Tests of

  10. Learning and risk aversion

    E-Print Network [OSTI]

    Oyarzun, Carlos

    2009-06-02T23:59:59.000Z

    This dissertation contains three essays on learning and risk aversion. In the first essay we consider how learning may lead to risk averse behavior. A learning rule is said to be risk averse if it is expected to add more probability to an action...

  11. Livestock Risk Protection

    E-Print Network [OSTI]

    Thompson, Bill; Bennett, Blake; Jones, Diana

    2008-10-21T23:59:59.000Z

    risk insurance with an ending date of coverage that meets their risk management objectives. Feeder cattle producers may want the end date of coverage to match the William Thompson, Blake Bennett and DeDe Jones* Figure 1: Livestock Risk Protection...

  12. Risk & QualityRisk & Quality ManagementManagement

    E-Print Network [OSTI]

    liability."" [Balsaono RR, Brown[Balsaono RR, Brown MK, Risk ManagementMK, Risk Management inin Legal

  13. BEHAVIOR OF HIGH RISK MOUNTAIN LIONS

    E-Print Network [OSTI]

    Packard, Jane M.

    , Texas Southwest Regional Office Santa Fe, New Mexico #12;EXECUTIVE SUMMARY The National Park Service resulted in injury of a pet dog. In two incidents, native prey (javelins) were pursued in the presence). Of six subadult males studied, three were removed due to encounterswith humans or a pet (Table4). Seven

  14. High Risk Plan | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy ChinaofSchaefer To:Department of EnergySeacrist, Senior Fellow - Emerging

  15. Risk-adjusted monitoring of survival times

    SciTech Connect (OSTI)

    Sego, Landon H.; Reynolds, Marion R.; Woodall, William H.

    2009-02-26T23:59:59.000Z

    We consider the monitoring of clinical outcomes, where each patient has a di®erent risk of death prior to undergoing a health care procedure.We propose a risk-adjusted survival time CUSUM chart (RAST CUSUM) for monitoring clinical outcomes where the primary endpoint is a continuous, time-to-event variable that may be right censored. Risk adjustment is accomplished using accelerated failure time regression models. We compare the average run length performance of the RAST CUSUM chart to the risk-adjusted Bernoulli CUSUM chart, using data from cardiac surgeries to motivate the details of the comparison. The comparisons show that the RAST CUSUM chart is more efficient at detecting a sudden decrease in the odds of death than the risk-adjusted Bernoulli CUSUM chart, especially when the fraction of censored observations is not too high. We also discuss the implementation of a prospective monitoring scheme using the RAST CUSUM chart.

  16. Risk Policy and Risk Management Procedures The University's Risk Policy sets out The University's approach to risk and its

    E-Print Network [OSTI]

    Aickelin, Uwe

    Risk Policy and Risk Management Procedures Preface The University's Risk Policy sets out The University's approach to risk and its management together with the means for identifying, analysing and managing risk in order to minimise its frequency and impact. The risks considered significant

  17. Professional Certificate in Risk Management

    E-Print Network [OSTI]

    Carleton University

    Professional Certificate in Risk Management 2010 Program 3 Part-time Courses CRM01: Essentials of Risk Management ­ Next Session Fall 2010 CRM02: Risk Control ­ Jan. 12 - April 26, 2010 CRM03: Risk to apply for the Canadian Risk Management (CRM) designation. #12;Professional Certificate in Risk

  18. Asbestos exposure--quantitative assessment of risk

    SciTech Connect (OSTI)

    Hughes, J.M.; Weill, H.

    1986-01-01T23:59:59.000Z

    Methods for deriving quantitative estimates of asbestos-associated health risks are reviewed and their numerous assumptions and uncertainties described. These methods involve extrapolation of risks observed at past relatively high asbestos concentration levels down to usually much lower concentration levels of interest today--in some cases, orders of magnitude lower. These models are used to calculate estimates of the potential risk to workers manufacturing asbestos products and to students enrolled in schools containing asbestos products. The potential risk to workers exposed for 40 yr to 0.5 fibers per milliliter (f/ml) of mixed asbestos fiber type (a permissible workplace exposure limit under consideration by the Occupational Safety and Health Administration (OSHA) ) are estimated as 82 lifetime excess cancers per 10,000 exposed. The risk to students exposed to an average asbestos concentration of 0.001 f/ml of mixed asbestos fiber types for an average enrollment period of 6 school years is estimated as 5 lifetime excess cancers per one million exposed. If the school exposure is to chrysotile asbestos only, then the estimated risk is 1.5 lifetime excess cancers per million. Risks from other causes are presented for comparison; e.g., annual rates (per million) of 10 deaths from high school football, 14 from bicycling (10-14 yr of age), 5 to 20 for whooping cough vaccination. Decisions concerning asbestos products require participation of all parties involved and should only be made after a scientifically defensible estimate of the associated risk has been obtained. In many cases to date, such decisions have been made without adequate consideration of the level of risk or the cost-effectiveness of attempts to lower the potential risk. 73 references.

  19. Risk management at Argonne National Laboratory

    SciTech Connect (OSTI)

    Hill, D.J.; Hislop, R.D.

    1994-02-01T23:59:59.000Z

    The only facility at Argonne National Laboratory which is classified as high hazard is EBR-II. A Level I Probabilistic Risk Assessment (PRA), including external events, has been completed for EBR-II. There were several objectives for this project; to provide a quantitative estimate of the risk associated with the operation of EBR-II, to provide a framework for managerial decision-making for the management of risk at the facility, and to provide insights into the nature of the risk of EBR-II that can be applied in the design of future LMRS. Other ANL facilities do not have complete probabilistic assessments. Despite this fact, Risk Management is an essential part of ANL`s approach to safety and operations. Risk management at Argonne National Laboratory is not limited to accelerator or nuclear facilities. It is also an integral part of construction activities. The Advanced Photon Source, a major construction project at the Laboratory, utilizes a variety of risk assessment techniques to identify potential construction loss exposures and to develop measures to eliminate them. Over the past 15 years, in excess of 15,000 pages of regulatory requirements pertaining to environment safety and health have been printed in the Federal Register. Not all of these are applicable to Argonne National Laboratory all of the time, but as a highly-visible, nationally-funded facility, compliance with those that are applicable must be above reproach. Therefore, risk management is also a very important part of construction activities at ANL. This paper will give examples of these activities, such as, the EBR-II PRA, risk-based analyses of Fuel Cycle Facility Safety Systems, reliability studies of the Access Control Interlock System for the Advanced Photon Source and management approaches for controlling risk during the construction activities at APS.

  20. Influence of germanium and the melting method on the mechanical properties of NM23KhYu alloy at high temperatures

    SciTech Connect (OSTI)

    Lebedev, D.V.; Rozonova, V.M.

    1986-05-01T23:59:59.000Z

    The purpose of the investigation was to increase the plasticity and ductility of NM233KhYu alloy without a detrimental effect on its service properties, selection of methods evaluation of placticity and ductility at increased temperatures, and establishment on the basis of the results obtained of the optimum temperature range for hot working by pressure. To evaluate the mechanical properties at increased temperature tension, impact strength and torsion tests were made. Alloying with germanium of NM23KhYu alloy leads to a two-to-three-time increase in its impact strength. Electron beam remelting of NM23KhYu alloy with germanium increases the impact strength, and the characteristics of plasticity by 1.5-2 times in comparison with the similar properties of this alloy produced by vacuum induction melting.

  1. Estimating radiogenic cancer risks

    SciTech Connect (OSTI)

    NONE

    1994-06-01T23:59:59.000Z

    This document presents a revised methodology for EPA`s estimation of cancer risks due to low-LET radiation exposures in light of information that has become available since the publication of BIER III, especially new information on the Japanese atomic bomb survivors. For most cancer sites, the risk model is one in which the age-specific relative risk coefficients are obtained by taking the geometric mean of coefficients derived from the atomic bomb survivor data employing two different methods for transporting risks from Japan to the U.S. (multiplicative and NIH projection methods). Using 1980 U.S. vital statistics, the risk models are applied to estimate organ-specific risks, per unit dose, for a stationary population.

  2. First principle study of elastic and thermodynamic properties of ZrZn{sub 2} and HfZn{sub 2} under high pressure

    SciTech Connect (OSTI)

    Sun, Na; Zhang, Xinyu, E-mail: jiaqianqin@gmail.com; Ning, Jinliang; Zhang, Suhong; Liang, Shunxing; Ma, Mingzhen; Liu, Riping [State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004 (China); Qin, Jiaqian, E-mail: jiaqianqin@gmail.com [Metallurgy and Materials Science Research Institute, Chulalongkorn University, Bangkok 10330 (Thailand)

    2014-02-28T23:59:59.000Z

    A comprehensive investigation of the structural, elastic, and thermodynamic properties for Laves-phases ZrZn{sub 2} and HfZn{sub 2} are conducted using density functional total energy calculations combined with the quasi-harmonic Debye model. The optimized lattice parameters of ZrZn{sub 2} and HfZn{sub 2} compare well with available experimental values. We estimated the mechanical behaviors of both compounds under compression, including mechanical stability, Young's modulus, Poisson's ratio, ductility, and anisotropy. Additionally, the thermodynamic properties as a function of pressure and temperature are analyzed and found to be in good agreement with the corresponding experimental data.

  3. Risk Evaluation for CO{sub 2} Geosequestration in the Knox Supergroup

    SciTech Connect (OSTI)

    Leetaru, Hannes

    2014-01-31T23:59:59.000Z

    This report describes a process and provides seed information for identifying and evaluating risks pertinent to a hypothetical carbon dioxide (CO{sub 2}) capture and sequestration (CCS) project. In the envisioned project, the target sequestration reservoir rock is the Potosi Formation of the Knox Supergroup. The Potosi is identified as a potential target formation because (1) at least locally, it contains vuggy to cavernous layers that have very high porosity, and (2) it is present in areas where the deeper Mt. Simon Sandstone (a known potential reservoir unit) is absent or nonporous. The key report content is discussed in Section 3.3, which describes two lists of Features, Events, and Processes (FEPs) that should be considered during the design stage of such a project. These lists primarily highlight risk elements particular to the establishment of the Potosi as the target formation in general. The lists are consciously incomplete with respect to risk elements that would be relevant for essentially all CCS projects regardless of location or geology. In addition, other risk elements specific to a particular future project site would have to be identified. Sources for the FEPs and scenarios listed here include the iconic Quintessa FEPs list developed for the International Energy Agency Greenhouse Gas (IEAGHG) Programme; previous risk evaluation projects executed by Schlumberger Carbon Services; and new input solicited from experts currently working on aspects of CCS in the Knox geology. The projects used as sources of risk information are primarily those that have targeted carbonate reservoir rocks similar in age, stratigraphy, and mineralogy to the Knox-Potosi. Risks of using the Potosi Formation as the target sequestration reservoir for a CCS project include uncertainties about the levels of porosity and permeability of that rock unit; the lateral consistency and continuity of those properties; and the ability of the project team to identify suitable (i.e., persistently porous and permeable) injection depths within the overall formation. Less direct implications include the vertical position of the Potosi within the rock column and the absence of a laterally extensive shale caprock immediately overlying the Potosi. Based on modeling work done partly in association with this risk report, risks that should also be evaluated include the ability of available methods to predict and track the development of a CO{sub 2} plume as it migrates away from the injection point(s). The geologic and hydrodynamic uncertainties present risks that are compounded at the stage of acquiring necessary drilling and injection permits. It is anticipated that, in the future, a regional geologic study or CO{sub 2}-emitter request may identify a small specific area as a prospective CCS project site. At that point, the FEPs lists provided in this report should be evaluated by experts for their relative levels of risk. A procedure for this evaluation is provided. The higher-risk FEPs should then be used to write project-specific scenarios that may themselves be evaluated for risk. Then, actions to reduce and to manage risk can be described and undertaken. The FEPs lists provided as Appendix 2 should not be considered complete, as potentially the most important risks are ones that have not yet been thought of. But these lists are intended to include the most important risk elements pertinent to a Potosi-target CCS project, and they provide a good starting point for diligent risk identification, evaluation, and management.

  4. Systemwide Risk Management and Public Safety 401 Golden Shore, 5th Floor

    E-Print Network [OSTI]

    de Lijser, Peter

    Systemwide Risk Management and Public Safety 401 Golden Shore, 5th Floor Long Beach, CA 90802 in this self-insured program. The Office of Risk Management in the Chancellor's Office administers the general liability, workers' compensation, property, and professional liability programs. The State Office of Risk

  5. Conditional Risk Mappings

    E-Print Network [OSTI]

    Megiddo

    2006-09-30T23:59:59.000Z

    Key words: Risk; Conjugate Duality; Stochastic Optimization; Dynamic ... MSC2000 Subject Classification: Primary: 90C15,90C48; Secondary: 91B30,

  6. Helical Tomotherapy vs. Intensity-Modulated Proton Therapy for Whole Pelvis Irradiation in High-Risk Prostate Cancer Patients: Dosimetric, Normal Tissue Complication Probability, and Generalized Equivalent Uniform Dose Analysis

    SciTech Connect (OSTI)

    Widesott, Lamberto, E-mail: widesott@yahoo.it [Agenzia Provinciale per la Protonterapia, Trento (Italy); Pierelli, Alessio; Fiorino, Claudio [Department of Medical Physics, St. Raffaele Scientific Institute, Milan (Italy); Lomax, Antony J. [Paul Scherrer Institut, Villigen (Switzerland); Amichetti, Maurizio [Agenzia Provinciale per la Protonterapia, Trento (Italy); Cozzarini, Cesare [Department of Radiotherapy, St. Raffaele Scientific Institute, Milan (Italy); Soukup, Martin [Section for Biomedical Physics, Universitatsklinik fur Radioonkologie, Tubingen (Germany); Schneider, Ralf; Hug, Eugen [Paul Scherrer Institut, Villigen (Switzerland); Di Muzio, Nadia [Department of Radiotherapy, St. Raffaele Scientific Institute, Milan (Italy); Calandrino, Riccardo [Department of Medical Physics, St. Raffaele Scientific Institute, Milan (Italy); Schwarz, Marco [Agenzia Provinciale per la Protonterapia, Trento (Italy)

    2011-08-01T23:59:59.000Z

    Purpose: To compare intensity-modulated proton therapy (IMPT) and helical tomotherapy (HT) treatment plans for high-risk prostate cancer (HRPCa) patients. Methods and Materials: The plans of 8 patients with HRPCa treated with HT were compared with IMPT plans with two quasilateral fields set up (-100{sup o}; 100{sup o}) and optimized with the Hyperion treatment planning system. Both techniques were optimized to simultaneously deliver 74.2 Gy/Gy relative biologic effectiveness (RBE) in 28 fractions on planning target volumes (PTVs)3-4 (P + proximal seminal vesicles), 65.5 Gy/Gy(RBE) on PTV2 (distal seminal vesicles and rectum/prostate overlapping), and 51.8 Gy/Gy(RBE) to PTV1 (pelvic lymph nodes). Normal tissue calculation probability (NTCP) calculations were performed for the rectum, and generalized equivalent uniform dose (gEUD) was estimated for the bowel cavity, penile bulb and bladder. Results: A slightly better PTV coverage and homogeneity of target dose distribution with IMPT was found: the percentage of PTV volume receiving {>=}95% of the prescribed dose (V{sub 95%}) was on average >97% in HT and >99% in IMPT. The conformity indexes were significantly lower for protons than for photons, and there was a statistically significant reduction of the IMPT dosimetric parameters, up to 50 Gy/Gy(RBE) for the rectum and bowel and 60 Gy/Gy(RBE) for the bladder. The NTCP values for the rectum were higher in HT for all the sets of parameters, but the gain was small and in only a few cases statistically significant. Conclusions: Comparable PTV coverage was observed. Based on NTCP calculation, IMPT is expected to allow a small reduction in rectal toxicity, and a significant dosimetric gain with IMPT, both in medium-dose and in low-dose range in all OARs, was observed.

  7. Properties of the Intra Cluster Medium at High Redshift P. Tozzi a , S. Ettori b , P. Rosati b and S. Borgani c

    E-Print Network [OSTI]

    Ettori, Stefano

    and S. Borgani c a INAF, Osservatorio Astronomico di Trieste, via G.B. Tiepolo 11, I{34131, Trieste di Trieste, via G.B. Tiepolo 11, I-34131 Trieste, Italy We analyze the X{ray properties of the most

  8. Risk Management Steering Committee MINUTES OF THE MEETING of October 26, 2009

    E-Print Network [OSTI]

    Victoria, University of

    Risk Management Steering Committee MINUTES OF THE MEETING of October 26, 2009 3:00 ­ 4:30 pm ASB scheduled for #12;Risk Management Steering Committee Minutes October 26, 2009 Page 2 November 2nd through 5 would like to include students in residence as a high risk group. 4.2 Risk Register Update and Review

  9. Essays on risk aversion

    E-Print Network [OSTI]

    Jindapon, Paan

    2006-10-30T23:59:59.000Z

    the preferred distribution by a simple mean-preserving spread and the cost is a utility cost. Higher-order increases in risk lead to higher-order generalizations, and the com- parative statics method yields a unified approach to the problem of comparative risk...

  10. High-Risk, High-Reward Simulations | ornl.gov

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    to meet the projected rise in energy consumption. In addition, concerns over the greenhouse effect are leading policy makers to emphasize carbon-free energy sources to avoid...

  11. JOURNAL DE PHYSIQUE Collogue CI, supplement au n 4, Tome 38, Avril 1977, page Cl-17 HIGH-FREQUENCY PROPERTIES OF Ni-Zn-Co FERRITES

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    -FREQUENCY PROPERTIES OF Ni-Zn-Co FERRITES IN RELATION TO IRON CONTENT AND MICROSTRUCTURE J. G. M. DE LAU (*) and A-substitution d'ions Co3+ et des ions Co2+ dans des ferrites de Ni-Zn ainsi que la réduction de la taille des+ ions in addition to Co2+ in Ni-Zn ferrites and the reduction of grain size lead to a great improvement

  12. THE INFLUENCE OF RETAINED AUSTENITE ON THE THICK SECTION MECHANICAL PROPERTIES OF A COMMERCIAL LOW ALLOY ULTRA-HIGH STRENGTH STEEL

    E-Print Network [OSTI]

    Horn, R.M.

    2010-01-01T23:59:59.000Z

    of Fracture of High Strength Steels, Final Tech. Report,Arsenal Lab. , K. J. Irvine, Steel Strengthening Mechanisms,Diagrams, United States Steel, Pittsburgh, PA, 1963. E. G.

  13. Hydrogen Properties

    Broader source: Energy.gov [DOE]

    The atomic structure, physical and chemical properties, flammability and safety, fundamental gas laws, how pressure, temperature and mass flow are measured

  14. Risk Management in Biopharmaceutical Supply Chains

    E-Print Network [OSTI]

    Ma, Yao

    2011-01-01T23:59:59.000Z

    Supply Chain Risk Managementof Recent Work on Supply Chain Risk Management . . . . .M. , Supply chain risk management: Outlining an agenda for

  15. Systemic risk in consumer finance

    E-Print Network [OSTI]

    Poon, Martha

    2011-01-01T23:59:59.000Z

    Systemic risk in consumer finance Uncertain about risk HowComplexity, Ecology, Finance The Pre-History of ResilienceSystemic risk in consumer finance Martha Poon, NYU At the

  16. (Energy Risk Professional, ERP), (GARP),

    E-Print Network [OSTI]

    Kaplan, Alexander

    · ­ Dragana Pilipovic. Energy Risk: Valuing and Managing Energy Derivatives,2nd Edition (New York: Mc). 9: Risk Management of Energy Derivatives · ­ Alexander Triantis. Handbook of Modern Finance (New 1 ( ) : . (Energy Risk Professional, ERP

  17. Risk in the Weapons Stockpile

    SciTech Connect (OSTI)

    Noone, Bailey C [Los Alamos National Laboratory

    2012-08-14T23:59:59.000Z

    When it comes to the nuclear weapons stockpile, risk must be as low as possible. Design and care to keep the stockpile healthy involves all aspects of risk management. Design diversity is a method that helps to mitigate risk.

  18. Synthesis of novel polyimides for the testing of structure-processing and property relations when used to form high temperature polymer matrices 

    E-Print Network [OSTI]

    Tschen Molina, Francisco

    2007-04-25T23:59:59.000Z

    High-performance polymers have found an extreme range of applications in the aerospace industry. Composites which have polymers incorporated in them can usually meet the needs of the design, and are the ideal materials for aerospace applications due...

  19. Environment, Safety, and Health Risk Assessment Program (ESHRAP)

    SciTech Connect (OSTI)

    Eide, Steven Arvid; Thomas Wierman

    2003-12-01T23:59:59.000Z

    The Environment, Safety and Health Risk Assessment Program (ESHRAP) models human safety and health risk resulting from waste management and environmental restoration activities. Human safety and health risks include those associated with storing, handling, processing, transporting, and disposing of radionuclides and chemicals. Exposures to these materials, resulting from both accidents and normal, incident-free operation, are modeled. In addition, standard industrial risks (falls, explosions, transportation accidents, etc.) are evaluated. Finally, human safety and health impacts from cleanup of accidental releases of radionuclides and chemicals to the environment are estimated. Unlike environmental impact statements and safety analysis reports, ESHRAP risk predictions are meant to be best estimate, rather than bounding or conservatively high. Typically, ESHRAP studies involve risk predictions covering the entire waste management or environmental restoration program, including such activities as initial storage, handling, processing, interim storage, transportation, and final disposal. ESHRAP can be used to support complex environmental decision-making processes and to track risk reduction as activities progress.

  20. ORISE: Crisis and Risk Communication

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Crisis and Risk Communication Crisis and Risk Communication Because a natural disaster, act of terrorism or other public emergency can happen without notice, having a planned,...

  1. Risk Management Guide

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2011-01-18T23:59:59.000Z

    This Guide provides non-mandatory risk management approaches for implementing the requirements of DOE O 413.3B, Program and Project Management for the Acquisition of Capital Assets. Cancels DOE G 413.3-7.

  2. RISK ASSESSMENT CLOUD COMPUTING

    E-Print Network [OSTI]

    Columbia University

    SECURITY RESEARCH PRIVACY RISK ASSESSMENT AMC DATA FISMA CLOUD COMPUTING MOBILE DEVICES OPERATIONS application hosted in the cloud · Alaska DHHS fined $1.7M ­ Portable device stolen from vehicle · Mass Eye

  3. Personal Property

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2014-10-16T23:59:59.000Z

    This Guide provides non-regulatory guidance and information to assist DOE organizations and contractors in implementing the DOE-wide and site-specific personal property management programs. It supplements the policy, requirements, and responsibilities information contained in the DOE Order cited above and clarifies the regulatory requirements contained in the Federal Property Management Regulation (FMR) and specific contracts.

  4. Roadmap: Insurance Studies Property and Casualty Insurance Bachelor of Science

    E-Print Network [OSTI]

    Sheridan, Scott

    , Finance and Risk Management 3 INS 49021 Property and Casualty Insurance Operations 3 C Fulfills Writing 3 INS 49041 Personal Lines Property and Casualty Insurance 3 INS 49042 Commercial Lines Property and Casualty Insurance 3 Major Program Requirement (upper division) 3 See note 1 on page 2

  5. LONG-CHAIN POLYUNSATURATED FATTY ACID INTAKE AND ITS RELATIONSHIP TO RED BLOOD CELL AND SERUM LONG-CHAIN POLYUNSATURATED FATTY ACIDS IN WOMEN AT HIGH RISK FOR BREAST CANCER

    E-Print Network [OSTI]

    Harvey, Katherine

    2010-04-27T23:59:59.000Z

    questionnaire (DHQ). The mean age of the subjects was 47 ± 9.9 years, and the mean body mass index (BMI) was 25 ± 4.4. The mean 5-year Gail risk was 2.7 ± 2.2%. Twenty-two (48%) of the subjects were premenopausal and 24 (52%) were postmenopausal. Fifteen (33...

  6. Nuclear magnetic resonance: Its role as a microscopic probe of the electronic and magnetic properties of High-{Tc} superconductors and related materials

    SciTech Connect (OSTI)

    Suh, Byoung Jin

    1995-12-27T23:59:59.000Z

    NMR experiments are reported for Sr{sub 2}CuO{sub 2}Cl{sub 2}, HgBa{sub 2}CuO{sub 4+d}, YNi{sub 2}B{sub 2}C and YBa{sub 2}Cu{sub 3}O{sub 7}. NMR studies typify three different aspects of microscopic properties of HTSC. In non-superconducting antiferromagnetic (AF) prototype Sr{sub 2}CuO{sub 2}Cl{sub 2}, we used NMR to investigate Cu{sup 2+} correlated spin dynamics and AF phase transition in CuO2 layers. In the superconductors, we used NMR both to investigate the electronic properties of the Fermi-liquid in normal and superconducting states and to investigate flux lattice and flux-line dynamics in the superconducting state in presence of magnetic field. A summary of each study is given: {sup 35}Cl NMR was measured in Sr{sub 2}CuO{sub 2}Cl{sub 2} single crystals with T{sub N}=257K. {sub 35}Cl NMR relaxation rates showed crossover of Cu{sup 2+} spin dynamics from Heisenberg to XY-like correlation at 290 K well above T{sub N}. A field-dependent T{sub N} for H{perpendicular}c was observed and explained by a field-induced Ising-like anisotropy in ab plane. {sup 199}Hg NMR was measured in HgBa{sub 2}CuO{sub 4+d}. Properties of the Fermi-liquid are characterized by a single-spin fluid picture and opening of a spin pseudo-gap at q=0 above {Tc}. Below {Tc}, spin component of Knight shift decreases rapidly in agreement with prediction for d-wave pairing scheme. {sup 11}B and {sup 89}Y NMR/magnetization were measured in YNi{sub 2}B{sub 2}C. Temperature dependence of {sup 11}B Knight shift and of the NSLR gave a normal state which agrees with the Korringa relation, indicating that the AF fluctuations on the Ni sublattice are negligible. Opening of the superconducting gap obeys BCS. A NMR approach to investigate vortex thermal motion in HTSC is presented, based on contribution of thermal flux-lines motion to both T{sub 2}{sup {minus}1} and T{sub 1}{sup {minus}1}. Effects are demonstrated in YBa{sub 2}Cu{sub 3}O{sub 7} and HgBa{sub 2}CuO{sub 4+d}.

  7. Collapse of ferromagnetism in itinerant-electron system: A magnetic, transport properties, and high pressure study of (Hf,Ta)Fe{sub 2} compounds

    SciTech Connect (OSTI)

    Diop, L. V. B., E-mail: leopold.diop@neel.cnrs.fr; Isnard, O. [Univ. Grenoble Alpes, Inst NEEL, F-38042 Grenoble (France); CNRS, Inst NEEL, F-38042 Grenoble (France); Kastil, J. [Univ. Grenoble Alpes, Inst NEEL, F-38042 Grenoble (France); CNRS, Inst NEEL, F-38042 Grenoble (France); Institute of Physics AS CR v.v.i., Na Slovance 2, 182 21 Prague 8 (Czech Republic); Arnold, Z.; Kamarad, J. [Institute of Physics AS CR v.v.i., Na Slovance 2, 182 21 Prague 8 (Czech Republic)

    2014-10-28T23:59:59.000Z

    The magnetism and transport properties were studied for Laves (Hf,Ta)Fe{sub 2} itinerant-electron compounds, which exhibit a temperature-induced first-order transition from the ferromagnetic (FM) to the antiferromagnetic (AFM) state upon heating. At finite temperatures, the field-induced metamagnetic phase transition between the AFM and FM has considerable effects on the transport properties of these model metamagnetic compounds. A large negative magnetoresistance of about 14% is observed in accordance with the metamagnetic transition. The magnetic phase diagram is determined for the Laves Hf{sub 1?x}Ta{sub x}Fe{sub 2} series and its Ta concentration dependence discussed. An unusual behavior is revealed in the paramagnetic state of intermediate compositions, it gives rise to the rapid increase and saturation of the local spin fluctuations of the 3d electrons. This new result is analysed in the frame of the theory of Moriya. For a chosen composition Hf{sub 0.825}Ta{sub 0.175}Fe{sub 2}, exhibiting such remarkable features, a detailed investigation is carried out under hydrostatic pressure up to 1?GPa in order to investigate the volume effect on the magnetic properties. With increasing pressure, the magnetic transition temperature T{sub FM-AFM} from ferromagnetic to antiferromagnetic order decreases strongly non-linearly and disappears at a critical pressure of 0.75?GPa. In the pressure-induced AFM state, the field-induced first-order AFM-FM transition appears and the complex temperature dependence of the AFM-FM transition field is explained by the contribution from both the magnetic and elastic energies caused by the significant temperature variation of the amplitude of the local Fe magnetic moment. The application of an external pressure leads also to the progressive decrease of the Néel temperature T{sub N}. In addition, a large pressure effect on the spontaneous magnetization M{sub S} for pressures below 0.45?GPa, dln(M{sub s})/dP?=??6.3?×?10{sup ?2?}GPa{sup ?1} was discovered. The presented results are consistent with Moriya's theoretical predictions and can significantly help to better understand the underlying physics of itinerant electron magnetic systems nowadays widely investigated for both fundamental and applications purposes.

  8. Risk Perceptions and Risk Management Strategies in French

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    EA 4272 Risk Perceptions and Risk Management Strategies in French Oyster Farming Véronique le Bihan Perceptions and Risk Management Strategies in French Oyster Farming Véronique Le Bihan, Sophie Pardo, Patrice and their businesses contribute to defining their degree of risk perception and reliance on management tools. Beyond

  9. THE FUNDAMENTAL RISK QUADRANGLE IN RISK MANAGEMENT, OPTIMIZATION

    E-Print Network [OSTI]

    Uryasev, Stanislav

    THE FUNDAMENTAL RISK QUADRANGLE IN RISK MANAGEMENT, OPTIMIZATION AND STATISTICAL ESTIMATION1 R be confronted in numerous situations. Dealing with them systematically for purposes in risk management Statistical estimation is inevitably a partner with risk management in handling hazards, which may be known

  10. Reduction of the spectral linewidth of semiconductor lasers with quantum wire effects: Spectral properties of GaAlAs double heterostructure lasers in high magnetic fields

    SciTech Connect (OSTI)

    Arakawa, Y.; Vahala, K.; Yariv, A.; Lau, K.

    1986-02-10T23:59:59.000Z

    The spectral linewidth of a GaAlAs double heterostructure laser placed in a high magnetic field is measured at 190 K. It is found that the power-dependent spectral linewidth is reduced by a factor of 0.6 in a magnetic field of 19 T. This reduction is believed to result mainly from the reduction of the linewidth enhancement factor ..alpha.. due to a quasi-one-dimensional electronic system formed by the high magnetic field (i.e., by quantum wire effects).

  11. Reduction of the field spectrum linewidth of a multiple quantum well laser in a high magnetic field: spectral properties of quantum dot lasers

    SciTech Connect (OSTI)

    Vahala, K.; Arakawa, Y.; Yariv, A.

    1987-02-16T23:59:59.000Z

    The field spectrum linewidth of a multiple quantum well laser immersed in a high magnetic field is measured at room temperature and at 165 K. The low-temperature measurements show a decrease of linewidth with increasing magnetic field. We believe this behavior results from the formation of a totally discrete electronic state space. Measurements of the low-temperature luminescence spectrum show that the emission is split into two peaks by the high field with the higher energy peak responsible for lasing action.

  12. Crystal structure and high temperature transport properties of Yb-filled p-type skutterudites Yb{sub x}Co{sub 2.5}Fe{sub 1.5}Sb{sub 12}

    SciTech Connect (OSTI)

    Dong, Yongkwan [Department of Physics, University of South Florida, Tampa, FL 33620 (United States); Puneet, Pooja; Tritt, Terry M. [Department of Physics and Astronomy, Kinard Laboratory, Clemson University, Clemson, SC 29634 (United States); Nolas, George S., E-mail: gnolas@usf.edu [Department of Physics, University of South Florida, Tampa, FL 33620 (United States)

    2014-01-15T23:59:59.000Z

    Partially Yb-filled Fe substituted polycrystalline p-type skutterudites with nominal compositions Yb{sub x}Co{sub 2.5}Fe{sub 1.5}Sb{sub 12}, with varying filler concentrations x, were synthesized by reacting the constituent elements and subsequent solid state annealing, followed by densification by hot-pressing. The compositions and filling fractions were confirmed with a combination of Rietveld refinement and elemental analysis. Their thermoelectric properties were evaluated from 300 to 800 K. The Seebeck coefficients for the specimens increase with increasing temperature and plateau at around 750 K. The thermal conductivity decreases with increasing Yb filling fraction, and bipolar conduction becomes evident and increases at elevated temperatures. A maximum ZT value of 0.8 was obtained at 750 K for Yb{sub 0.47}Co{sub 2.6}Fe{sub 1.4}Sb{sub 12}. The thermoelectric properties and potential for further optimization are discussed in light of our results. - Graphical abstract: Display Omitted - Highlights: • Yb-filled Fe-substituted p-type CoSb{sub 3} skutterudites, Yb{sub x}Co{sub 2.5}Fe{sub 1.5}Sb{sub 12}, were structurally and physically characterized. • Both filling fraction and Co-to-Fe ratio affect the transport properties. • High ZT was obtained for the composition with ?50% Yb filling and a slightly lower than nominal Fe content.

  13. Materials Science and Engineering A, 2011, 528(1-2): p. 7596 7605 High strain rate compressive response ofsyntactic foams: trends in mechanical properties and failure mechanisms

    E-Print Network [OSTI]

    Gupta, Nikhil

    comprising hollow particles dispersed in a matrix material. Available studies on high strain rate compressive with respect to the material composition. Syntactic foams reinforced with micro- and nano-sized fibers are a class of porous materials in which thin-walled hollow particles are dispersed in a matrix material

  14. Rethinking Risk: Aspiration as Pure Risk

    E-Print Network [OSTI]

    Davies, Greg B

    2006-03-14T23:59:59.000Z

    of an environmental decision problem where di¤erent investment packages (acts) lead to di¤erent possible levels of global wealth and overall levels of global warming. Avoiding the all too easy economic assumption that the global wealth levels can simply be adjusted... by some amount to re‡ect the e¤ect of the global temperature levels, we are now left with two numerical components in this problem. There are thus separate measures of risk aversion that deal with wealth and temperature, and therefore two di¤erent concepts...

  15. CALIFORNIA STATE UNIVERSITY, RISK MANAGEMENT

    E-Print Network [OSTI]

    de Lijser, Peter

    CALIFORNIA STATE UNIVERSITY, FULLERTON RISK MANAGEMENT ANNUAL REPORT January 2008 OFFICE OF UNIVERSITY RISK MANAGEMENT CP-320 714-278-7346 #12;2006 ­ 2007 Risk Management Annual Report Page 2 I. Executive Summary A. Program Cost One method to assess the effectiveness of the University's risk management

  16. Eighth Annual Risk Management Conference

    E-Print Network [OSTI]

    Chaudhuri, Sanjay

    Eighth Annual Risk Management Conference Risk Management Amidst Global Rebalancing 10 ­ 11 July 2014, Singapore The Risk Management Institute (RMI) at the National University of Singapore invites submissions for its 8th annual conference on risk management in Singapore on 10 and 11 July 2014. We

  17. CALIFORNIA STATE UNIVERSITY, RISK MANAGEMENT

    E-Print Network [OSTI]

    de Lijser, Peter

    CALIFORNIA STATE UNIVERSITY, FULLERTON RISK MANAGEMENT ANNUAL REPORT November 2006 OFFICE OF UNIVERSITY RISK MANAGEMENT LH-806C 714-278-7346 #12;2005 ­ 2006 Risk Management Annual Report Page 2 I. Executive Summary A. Program Cost One method to assess the effectiveness of the University's risk management

  18. CALIFORNIA STATE UNIVERSITY, RISK MANAGEMENT

    E-Print Network [OSTI]

    de Lijser, Peter

    CALIFORNIA STATE UNIVERSITY, FULLERTON RISK MANAGEMENT ANNUAL REPORT November 2005 OFFICE OF UNIVERSITY RISK MANAGEMENT LH-806C 714-278-7346 #12;2004 ­ 2005 Risk Management Annual Report Page 2 I. Introduction The Office of University Risk Management provides resources, advice and training that allow

  19. Pest Risk Analysis for Hymenoscyphus

    E-Print Network [OSTI]

    Pest Risk Analysis for Hymenoscyphus pseudoalbidus for the UK and the Republic of Ireland #12;2 PRA for Hymenoscyphus pseudoalbidus C.E. Sansford 23rd May 2013 Pest Risk Analysis Pest Risk Analysis for Hymenoscyphus (Kowalski and Holdenrieder, 2009). 1 Please cite this document as: Sansford, CE (2013). Pest Risk Analysis

  20. Surface Electronic Properties and Site-Specific Laser Desorption...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Properties and Site-Specific Laser Desorption Processes of Highly Structured Nanoporous MgO Thin Films. Surface Electronic Properties and Site-Specific Laser Desorption Processes...

  1. FY2011 Sensitive Property List Lawrence Berkeley National Laboratory

    E-Print Network [OSTI]

    Drives Computers Desktop, Laptop, Workstation, Server Personal Digital Assistant (PDA) Devices property is defined as property that is highly portable, easily converted to personal use and is more

  2. Effect of dietary high-oleic sunflower oil in a swine diet on properties of raw and cooked pork and pork products

    E-Print Network [OSTI]

    Davidson, Todd Lee

    1988-01-01T23:59:59.000Z

    is evidence from breed comparisons that those breeds with the least depth of backfat in the carcass have the highest concentration of unsaturated fatty acids, particularly linoleic acid, and the lowest concentration of saturated fatty acids (Lea et al... areas); and (3) ham regions (biceps femoris). These samples were immediately placed in polyethylene bags, sealed under vacuum, and were 12 TABLE 1. COMPOSITION OF THE CONTROL AND HIGH-OLEIC SUNFLOWER OIL DIETS FED TO PIGS Ingredient Control Hosob...

  3. High-resolution ALMA Observations of SDP.81. II. Molecular Clump Properties of a Lensed Submillimeter Galaxy at z=3.042

    E-Print Network [OSTI]

    Hatsukade, Bunyo; Iono, Daisuke; Matsuda, Yuichi; Hayashi, Masao; Oguri, Masamune

    2015-01-01T23:59:59.000Z

    We present spatially-resolved properties of molecular gas and dust in a gravitationally-lensed submillimeter galaxy H-ATLAS J090311.6+003906 (SDP.81) at $z=3.042$ revealed by the Atacama Large Millimeter/submillimeter Array (ALMA). We identified 14 molecular clumps in the CO(5-4) line data, all with a spatial scale of $\\sim$50-300 pc in the source plane. The surface density of molecular gas ($\\Sigma_{\\rm H_2}$) and star-formation rate ($\\Sigma_{\\rm SFR}$) of the clumps are more than three orders of magnitude higher than those found in local spiral galaxies. The clumps are placed in the `burst' sequence in the $\\Sigma_{\\rm H_2}$-$\\Sigma_{\\rm SFR}$ plane, suggesting that $z \\sim 3$ molecular clumps follow the star-formation law derived for local starburst galaxies. With our gravitational lens model, the positions in the source plane are derived for the molecular clumps, dust clumps, and stellar components identified in the {\\sl Hubble Space Telescope} image. The molecular and dust clumps coexist in a similar re...

  4. A Case Study in Sequential Pattern Mining for ITOperational Risk

    E-Print Network [OSTI]

    Ruggieri, Salvatore

    A Case Study in Sequential Pattern Mining for IT­Operational Risk Valerio Grossi, Andrea Romei of a network of Private Branch eXchanges (PBXs). The approach relies on preprocessing and data mining tasks. In this paper, we concentrate on the high frequency low impact class of risk by reporting a case study in IT­operational

  5. A Methodology for Exposing Process Risk in Emergent System VICTOR R. BASILI, University of Maryland at College Park and the Fraunhofer

    E-Print Network [OSTI]

    Basili, Victor R.

    A Methodology for Exposing Process Risk in Emergent System Properties VICTOR R. BASILI, University System Properties. ACM Trans. on Soft. Eng. Method. X, X, XXXX. DOI = 10.1145/0000000.0000000 http. The purpose of this paper is to define a risk measurement methodology for emergent system properties that does

  6. ITER risk workshop facilitator guide

    SciTech Connect (OSTI)

    Medina, Patricia [Los Alamos National Laboratory

    2009-01-01T23:59:59.000Z

    The goal of planning risk management is to make everyone involved in a program aware that risk should be a consideration in the design, development, and fielding of a system. Risk planning is a tool to assess and mitigate events that might adversely impact the program. Therefore, risk management increases the probability/likelihood of program success and can help to avoid program crisis management and improve problem solving by managing risk early in the acquisition cycle.

  7. ITER risk workshop participant guide

    SciTech Connect (OSTI)

    Medina, Patricia [Los Alamos National Laboratory

    2009-01-01T23:59:59.000Z

    The goal of planning risk management is to make everyone involved in a program aware that risk should be a consideration in the design, development, and fielding of a system. Risk planning is a tool to assess and mitigate events that might adversely impact the program. Therefore, risk management increases the probability/likelihood of program success and can help to avoid program crisis management and improve problem solving by managing risk early in the acquisition cycle.

  8. Carroll County- Green Building Property Tax Credit

    Broader source: Energy.gov [DOE]

    The state of Maryland permits Carroll County (Md Code: Property Tax § 9-308(e)) to offer property tax credits for high performance buildings if it chooses to do so.* Carroll County has exercised...

  9. NGNP Risk Management Database: A Model for Managing Risk

    SciTech Connect (OSTI)

    John Collins; John M. Beck

    2011-11-01T23:59:59.000Z

    The Next Generation Nuclear Plant (NGNP) Risk Management System (RMS) is a database used to maintain the project risk register. The RMS also maps risk reduction activities to specific identified risks. Further functionality of the RMS includes mapping reactor suppliers Design Data Needs (DDNs) to risk reduction tasks and mapping Phenomena Identification Ranking Table (PIRTs) to associated risks. This document outlines the basic instructions on how to use the RMS. This document constitutes Revision 1 of the NGNP Risk Management Database: A Model for Managing Risk. It incorporates the latest enhancements to the RMS. The enhancements include six new custom views of risk data - Impact/Consequence, Tasks by Project Phase, Tasks by Status, Tasks by Project Phase/Status, Tasks by Impact/WBS, and Tasks by Phase/Impact/WBS.

  10. Health risks in perspective: Judging health risks of energy technologies

    SciTech Connect (OSTI)

    Rowe, M.D.

    1992-09-18T23:59:59.000Z

    Almost daily, Americans receive reports from the mass news media about some new and frightening risk to health and welfare. Most such reports emphasize the newsworthiness of the risks -- the possibility of a crisis, disagreements among experts, how things happened, who is responsible for fixing them, how much will it cost, conflict among parties involved, etc. As a rule, the magnitudes of the risks, or the difficulty of estimating those magnitudes, have limited newsworthiness, and so they are not mentioned. Because of this emphasis in the news media, most people outside the risk assessment community must judge the relative significance of the various risks to which we all are exposed with only that information deemed newsworthy by reporters. This information is biased and shows risks in isolation. There is no basis for understanding and comparing the relative importance of risks among themselves, or for comparing one risk, perhaps a new or newly-discovered one, in the field of all risks. The purpose of this report is to provide perspective on the various risks to which we are routinely exposed. It serves as a basis for understanding the meaning of quantitative risk estimates and for comparing new or newly-discovered risks with other, better-understood risks. Specific emphasis is placed on health risks of energy technologies.

  11. Monitoring microbe-induced physical property changes using high-frequency acoustic waveform data: Toward the development of a microbial megascope

    SciTech Connect (OSTI)

    Williams, Kenneth Hurst

    2002-05-20T23:59:59.000Z

    A laboratory investigation was undertaken to determine the effect of microbe generated gas bubbles in controlled, saturated sediment columns utilizing a novel technique involving acoustic wave propagation. Specifically, the effect of denitrifying bacteria on saturated flow conditions was evaluated in light of the stimulated production of N{sub 2} gas and the resulting plugging of the pore throats. The propagation of high frequency acoustic waves through the sediment columns was used to locate those regions in the column where gas accumulation occurred. Over a period of six weeks, regions of gas accumulation resulted in the attenuation of acoustic wave energies with the decreases in amplitude typically greater than one order of magnitude.

  12. Creating traveling waves from standing waves from the gyrotropic paramagnetic properties of Fe{sup 3+} ions in a high-Q whispering gallery mode sapphire resonator

    SciTech Connect (OSTI)

    Benmessai, Karim; Tobar, Michael Edmund; Bazin, Nicholas; Bourgeois, Pierre-Yves; Kersale, Yann; Giordano, Vincent [School of Physics M013, University of Western Australia, 35 Stirling Highway, Crawley, Western Australia 6009 (Australia); Institut FEMTO-ST, UMR 6174 CNRS, Universite de Franche-Comte, 25044 Besancon (France)

    2009-05-01T23:59:59.000Z

    We report observations of the gyrotropic change in magnetic susceptibility of the Fe{sup 3+} electron paramagnetic resonance at 12.037 GHz (between spin states |1/2> and |3/2>) in sapphire with respect to the applied magnetic field. Measurements were made by observing the response of the high-Q whispering gallery doublet in a Hemex sapphire resonator cooled to 5 K. The doublets initially existed as standing waves at zero field and were transformed to traveling waves due to the gyrotropic response.

  13. Properties of zinc oxide films grown on sapphire substrates using high-temperature H{sub 2}O generated by a catalytic reaction on platinum nanoparticles

    SciTech Connect (OSTI)

    Yasui, Kanji, E-mail: kyasui@vos.nagaokaut.ac.jp; Takeuchi, Tomohiko; Nagatomi, Eichi; Satomoto, Souichi; Miura, Hitoshi; Kato, Takahiro [Department of Electrical, Electronics and Information Engineering, Nagaoka University of Technology, Nagaoka, Niigata 940-2188 (Japan); Konya, Takayuki [Application Laboratory, Rigaku Corporation, Akishima, Tokyo 196-8666 (Japan)

    2014-03-15T23:59:59.000Z

    The authors investigated the characteristics of ZnO films grown on a-plane (11-20) sapphire substrates at 773–873?K using a reaction between dimethylzinc and high-temperature H{sub 2}O generated by a catalytic reaction on Pt nanoparticles. The growth rate was 0.02–0.07??m min{sup ?1}. The largest electron mobility and the smallest residual carrier concentration for the ZnO films were 169 cm{sup 2} V{sup ?1} s{sup ?1} and 1.6?×?10{sup 17}?cm{sup ?3}, respectively. X-ray diffraction patterns for the ZnO films exhibited intense (0002) and (0004) peaks associated with ZnO (0001) planes. The minimum full width at half maximum of the ?-rocking curve for ZnO (0002) was less than 0.1°. In a ZnO film with a high electron mobility, no rotational domains were identified using a ZnO (10-10) ? scan. From secondary ion mass spectroscopy, a hydrogen concentration of 3?×?10{sup 18}?cm{sup ?3} and a boron concentration of 2–5?×?10{sup 17}?cm{sup ?3} were determined. These were identified as extrinsic donor impurities.

  14. High Voltage Safety Act

    Broader source: Energy.gov [DOE]

    The purpose of the High Voltage Safety Act is to prevent injury to persons and property and interruptions of utility service resulting from accidental or inadvertent contact with high-voltage...

  15. Scintillation properties of SrI_2(Eu^2+) (Strontium iodide doped with europium) for high energy astrophysical detectors: Nonproportionality as a function of temperature and at high gamma-ray energies

    E-Print Network [OSTI]

    Perea, R S; Groza, M; Caudel, D; Nowicki, S; Burger, A; Stassun, K G; Peterson, T E

    2014-01-01T23:59:59.000Z

    Strontium iodide doped with europium is a new scintillator material being developed as an alternative to lanthanum bromide doped with cerium for use in high energy astrophysical detectors. As with all scintillators, the issue of nonproportionality is important because it affects the energy resolution of the detector. In this study, we investigate how the nonproportionality of strontium iodide doped with europium changes as a function of temperature 16 deg. C to 60 deg. C by heating the strontium iodide doped with europium scintillator separate from the photomultiplier tube. In a separate experiment, we also investigate the nonproportionality at high energies (up to 6 MeV) of strontium iodide doped with europium at a testing facility located at NASA Goddard Space Flight Center. We find that the nonproportionality increases nearly monotonically as the temperature of the strontium iodide doped with europium scintillator is increased, although there is evidence of non-monotonic behavior near 40 deg. C, perhaps du...

  16. Locke, Stock, and Peril: Natural Property Rights, Pollution, Peter Railton

    E-Print Network [OSTI]

    Callender, Craig

    1 Locke, Stock, and Peril: Natural Property Rights, Pollution, and Risk* Peter Railton INTRODUCTION rightfully take it from him or hinder him in his enjoyment of it. His right entitles him to exclude others

  17. Risk Management Guide

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2008-09-16T23:59:59.000Z

    This Guide provides a framework for identifying and managing key technical, schedule, and cost risks through applying the requirements of DOE O 413.3A, Program and Project Management for the Acquisition of Capital Assets, dated 7-28-06. Canceled by DOE G 413.3-7A, dated 1-12-11. Does not cancel other directives.

  18. Risks and Risk Governance in Unconventional Shale Gas Development

    E-Print Network [OSTI]

    Jackson, Robert B.

    Risks and Risk Governance in Unconventional Shale Gas Development Mitchell J. Small,*, Paul C, Desert Research Institute, Reno, Nevada 89512, United States 1. INTRODUCTION The recent U.S. shale gas Issue: Understanding the Risks of Unconventional Shale Gas Development Published: July 1, 2014 A broad

  19. A novel 3D structure composed of strings of hierarchical TiO{sub 2} spheres formed on TiO{sub 2} nanobelts with high photocatalytic properties

    SciTech Connect (OSTI)

    Jiang, Yongjian [State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, School of Renewable Energy, North China Electric Power University, Beijing 102206 (China); Li, Meicheng, E-mail: mcli@ncepu.edu.cn [State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, School of Renewable Energy, North China Electric Power University, Beijing 102206 (China); Suzhou Institute, North China Electric Power University, Suzhou 215123 (China); Song, Dandan; Li, Xiaodan; Yu, Yue [State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, School of Renewable Energy, North China Electric Power University, Beijing 102206 (China)

    2014-03-15T23:59:59.000Z

    A novel hierarchical titanium dioxide (TiO{sub 2}) composite nanostructure with strings of anatase TiO{sub 2} hierarchical micro-spheres and rutile nanobelts framework (TiO{sub 2} HSN) is successfully synthesized via a one-step hydrothermal method. Particularly, the strings of hierarchical spheres are assembled by very thin TiO{sub 2} nanosheets, which are composed of highly crystallized anatase nanocrystals. Meanwhile, the HSN has a large surface area of 191 m{sup 2}/g, which is about 3 times larger than Degussa P25. More importantly, the photocatalytic activity of HSN and P25 were evaluated by the photocatalytic oxidation decomposition of methyl orange (MO) under UV light illumination, and the TiO{sub 2} HSN shows enhanced photocatalytic activity compared with Degussa P25, as result of its continuous hierarchical structures, special conductive channel and large specific surface area. With these features, the hierarchical TiO{sub 2} may have more potential applications in the fields of dye-sensitized solar cells and lithium ion batteries. -- Graphical abstract: Novel TiO{sub 2} with anatase micro-spheres and rutile nanobelts is synthesized. Enhanced photocatalysis is attributed to hierarchical structures (3D spheres), conductive channel (1D nanobelts) and large specific surface area (2D nanosheet). Highlights: • The novel TiO{sub 2} nanostructure (HSN) is fabricated for the first time. • HSN is composed of strings of anatase hierarchical spheres and rutile nanobelt. • HSN presents a larger S{sub BET} of 191 m{sup 2}/g, 3 times larger than the Degussa P25 (59 m{sup 2}/g). • HSN owns three kinds of dimensional TiO{sub 2} (1D, 2D and 3D) simultaneously. • HSN exhibits better photocatalytic performance compared with Degussa P25.

  20. Risk management with residential real estate derivatives : strategies for home builders

    E-Print Network [OSTI]

    Eddins, Quinn W. (Quinn William)

    2008-01-01T23:59:59.000Z

    This paper examines why and how publicly-traded home builders might use index-based residential property derivatives to manage risk. After describing a number of alternative reasons for hedging, I argue for a paradigm for ...

  1. Risk assessment in the DOE Assurance Program for Remedial Action

    SciTech Connect (OSTI)

    Marks, S.; Cross, F.T.; Denham, D.H.; Kennedy, W.E.; Stenner, R.D.

    1985-08-01T23:59:59.000Z

    This document provides information obtained during the performance of risk assessment tasks in support of the Assurance Program for Remedial Action (APRA) sponsored by the Office of Operational Safety of the Department of Energy. We have presented a method for the estimation of projected health effects at properties in the vicinity of uranium mill tailing piles due to transported tailings or emissions from the piles. Because radon and radon daughter exposure is identified as the principal factor contributing to health effects at such properties, the basis for estimating lung cancer risk as a result of such exposure is discussed in detail. Modeling of health risk due to a secondary pathway, ingestion of contaminated, home-grown food products, is also discussed since it is a potentially important additional source of exposure in certain geographic locations. Risk assessment methods used in various mill tailings reports are reviewed. The protocols for radiological surveys conducted in DOE-sponsored remedial action programs are critically reviewed with respect to their relevance to the needs of health risk estimation. The relevance of risk assessment to the APRA program is discussed briefly.

  2. Hydrodesulfurization Properties of Cobalt–nickel Phosphide...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    of Cobalt–nickel Phosphide Catalysts:Ni-rich Materials are Highly Active. Hydrodesulfurization Properties of Cobalt–nickel Phosphide Catalysts:Ni-rich Materials are...

  3. Information Security Office Risk Management

    E-Print Network [OSTI]

    Alpay, S. Pamir

    or Approved) 6/01/2013 CISO Jason Pufahl, CISO Approved 6/01/2013 RMAC Risk Management Advisory Council

  4. EXTRAPOLATING RADIATION-INDUCED CANCER RISKS FROM LOW DOSES TO VERY LOW DOSES

    E-Print Network [OSTI]

    Brenner, David Jonathan

    risk; National Council on Radiation Protection and Measurements INTRODUCTION THERE IS considerablePaper EXTRAPOLATING RADIATION-INDUCED CANCER RISKS FROM LOW DOSES TO VERY LOW DOSES David J. Brenner* Abstract--There is strong evidence that ionizing radiation increases cancer risks at high doses

  5. Environmental epidemiology: risk assessment

    SciTech Connect (OSTI)

    Prentice, R.L.; Whittemore, A.S. (eds.)

    1982-01-01T23:59:59.000Z

    Papers presented at the symposium are in the disciplines of biometry, environmental medicine, epidemiology, mathematics, and statistics. Attention is given to assessing risk due to environmental agents, particularly those known to be carcinogenic; both the complex medical issues involved and the mathematical and statistical methodologies used in analysis are presented. Separate abstracts have been prepared for 15 papers for inclusion in the Energy Data Base. (RJC)

  6. EHS DSP Authorization Request Form 2012-001 Safety & Risk Management

    E-Print Network [OSTI]

    , regulations and Driver safety Program requirements. I authorize Safety & Risk Management to enroll me or more persons in one accident; $5,000 property damage). Vehicle Code Section 16020 (effective July 1EHS DSP Authorization Request Form 2012-001 Safety & Risk Management Request for Authorization

  7. DRAFT NISTIR 8023 Risk Management for

    E-Print Network [OSTI]

    with replication devices. Keywords 3D printers; 3D scanners; copiers; countermeasures; exploits; mitigation; multifunction devices; printers; replication devices; risk; risk assessment; risk management; scanners; security

  8. Sandia Energy - Risk and Safety Assessment

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Risk and Safety Assessment Home Stationary Power Nuclear Fuel Cycle Nuclear Energy Safety Technologies Risk and Safety Assessment Risk and Safety AssessmentTara...

  9. Risk Management Process Overview | Department of Energy

    Office of Environmental Management (EM)

    risk management process The cybersecurity risk management process explained in the Electricity Sector Cybersecurity Risk Management Process (RMP) Guideline has two primary...

  10. Risk transfer via energy savings insurance

    E-Print Network [OSTI]

    Mills, Evan

    2001-01-01T23:59:59.000Z

    The fields of energy management and risk management are thusand Renewable Energy Options For Risk Management andbarriers to energy efficiency projects: risk of under-

  11. Risk-Averse Stochastic Dual Dynamic Programming

    E-Print Network [OSTI]

    Václav Kozmík

    2013-02-26T23:59:59.000Z

    Feb 26, 2013 ... Abstract: We formulate a risk-averse multi-stage stochastic program using conditional value at risk as the risk measure. The underlying random ...

  12. Vulnerability, Risk Management, and Agricultural Development

    E-Print Network [OSTI]

    Fafchamps, Marcel

    2009-01-01T23:59:59.000Z

    P. (1980). “Attitudes Towards Risk: Experimental MeasurementIncentive Flexibility, and Risk. ” Americal Journal ofCaria, A. S. (2009), Risk Attitudes and The Formation of

  13. Risk Taking and Gender in Hierarchies

    E-Print Network [OSTI]

    Scotchmer, Suzanne

    2006-01-01T23:59:59.000Z

    and Investors’ Attitudes toward Risk. ” forthcoming (2003)in attitudes toward ?nancial risk. ” Evolution and HumanGrossman. 2005a. “Sex and Risk: Experimen- tal Evidence. ” (

  14. CALIFORNIA STATE UNIVERSITY, RISK MANAGEMENT

    E-Print Network [OSTI]

    de Lijser, Peter

    CALIFORNIA STATE UNIVERSITY, FULLERTON RISK MANAGEMENT AND ENVIRONMENTAL HEALTH & INSTRUCTIONAL SAFETY 2009 ANNUAL REPORTS #12;2009 Annual Report Page 2 RISK MANAGEMENT I. Program Cost One method to assess the effectiveness of the University's risk management program is to compare the annual cost

  15. Algorithmic Aspects of Risk Management

    E-Print Network [OSTI]

    Stehr, Mark-Oliver

    Algorithmic Aspects of Risk Management Ashish Gehani1 , Lee Zaniewski2 , and K. Subramani2 1 SRI International 2 West Virginia University Abstract. Risk analysis has been used to manage the security of sys configuration. This allows risk management to occur in real time and reduces the window of exposure to attack

  16. CALIFORNIA STATE UNIVERSITY, RISK MANAGEMENT

    E-Print Network [OSTI]

    de Lijser, Peter

    CALIFORNIA STATE UNIVERSITY, FULLERTON RISK MANAGEMENT 2003-04 ANNUAL REPORT OFFICE OF UNIVERSITY RISK MANAGEMENT #12;2 I. Introduction "Of course you have to go out on a limb sometimes, that's where the best outcome in a changing environment, is the essence of risk management.3 This Report was developed

  17. Human Resources, Safety & Risk Management

    E-Print Network [OSTI]

    1 Human Resources, Safety & Risk Management 1600 Holloway Avenue, ADM 252 San Francisco, California OF RISK AND AGREEMENT TO PAY CLAIMS Activity: San Francisco State University Campus Recreation Department participating in this Activity. I am aware of the risks associated with traveling to/from and participating

  18. CALIFORNIA STATE UNIVERSITY, RISK MANAGEMENT

    E-Print Network [OSTI]

    de Lijser, Peter

    CALIFORNIA STATE UNIVERSITY, FULLERTON RISK MANAGEMENT 2010 ANNUAL REPORT #12;2010 Annual Report Page 2 I. Program Cost One method to assess the effectiveness of the University's risk management,538 $ 197,196 TOTAL Risk Management Costs $ 4,675,390 $ 4,541,975 $ 3,764,749 $ 3,703,959 $ 4

  19. "" EPAT# Risk Assessments Environmental Impact

    E-Print Network [OSTI]

    "" EPAT# Risk Assessments Appendixes Environmental Impact Statement NESHAPS for Radionuclides for Hazardous Air Pollutants Risk Assessments Environmental Impact Statement for NESHAPS Radionuclides VOLUME 2 for Hazardous Air Pollutants EPA 520.1'1.-89-006,-2 Risk Assessments Environmental Impact Statement for NESHAPS

  20. FINANCIAL RISK MANAGER (FRM ) CERTIFICATION

    E-Print Network [OSTI]

    Chaudhuri, Sanjay

    Dec 2013 (Save 30%) (Save 15%) Module 1 Foundation of Risk Management & Quantitative Analysis 1086FINANCIAL RISK MANAGER (FRM® ) CERTIFICATION TRAINING PROGRAM 2014 JANUARY INTAKE 4 January to 10 1321 1552 Module 2 Financial Markets and Products & Valuation and Risk Models 1637 1985 2333 Module 3

  1. RISK AND INVESTMENT IN LIBERALIZED

    E-Print Network [OSTI]

    RISK AND INVESTMENT MANAGEMENT IN LIBERALIZED ELECTRICITY MARKETS Jacob Lemming Department during the period 2000­2003. The papers are centered around the theme Financial Risk in a Liberalized at Risk Management To be included in: Modelling Prices in Competitive Electricity Markets, edited by Derek

  2. A framework for assessing ecological risks of petroleum-derived materials in soil

    SciTech Connect (OSTI)

    Suter, G.W. II

    1997-05-01T23:59:59.000Z

    Ecological risk assessment estimates the nature and likelihood of effects of human actions on nonhuman organisms, populations, and ecosystems. It is intended to be clearer and more rigorous in its approach to estimation of effects and uncertainties than previously employed methods of ecological assessment. Ecological risk assessment is characterized by a standard paradigm that includes problem formulation, analysis of exposure and effects, risk characterization, and communication with a risk manager. This report provides a framework that applies the paradigm to the specific problem of assessing the ecological risks of petroleum in soil. This type of approach requires that assessments be performed in phases: (1) a scoping assessment to determine whether there is a potential route of exposure for potentially significant ecological receptors; (2) a screening assessment to determine whether exposures could potentially reach toxic levels; and (3) a definitive assessment to estimate the nature, magnitude, and extent of risks. The principal technical issue addressed is the chemically complex nature of petroleum--a complexity that may be dealt with by assessing risks on the basis of properties of the whole material, properties of individual chemicals that are representative of chemical classes, distributions of properties of the constituents of chemical classes, properties of chemicals detected in the soil, and properties of indicator chemicals. The advantages and feasibility of these alternatives are discussed. The report concludes with research recommendations for improving each stage in the assessment process.

  3. NGNP Risk Management Database: A Model for Managing Risk

    SciTech Connect (OSTI)

    John Collins

    2009-09-01T23:59:59.000Z

    To facilitate the implementation of the Risk Management Plan, the Next Generation Nuclear Plant (NGNP) Project has developed and employed an analytical software tool called the NGNP Risk Management System (RMS). A relational database developed in Microsoft® Access, the RMS provides conventional database utility including data maintenance, archiving, configuration control, and query ability. Additionally, the tool’s design provides a number of unique capabilities specifically designed to facilitate the development and execution of activities outlined in the Risk Management Plan. Specifically, the RMS provides the capability to establish the risk baseline, document and analyze the risk reduction plan, track the current risk reduction status, organize risks by reference configuration system, subsystem, and component (SSC) and Area, and increase the level of NGNP decision making.

  4. Risk-Sensitive Optimal Control of Quantum Systems

    E-Print Network [OSTI]

    M. R. James

    2003-11-03T23:59:59.000Z

    The importance of feedback control is being increasingly appreciated in quantum physics and applications. This paper describes the use of optimal control methods in the design of quantum feedback control systems, and in particular the paper formulates and solves a risk-sensitive optimal control problem. The resulting risk-sensitive optimal control is given in terms of a new unnormalized conditional state, whose dynamics include the cost function used to specify the performance objective. The risk-sensitive conditional dynamic equation describes the evolution of our {\\em knowledge} of the quantum system tempered by our {\\em purpose} for the controlled quantum system. Robustness properties of risk-sensitive controllers are discussed, and an example is provided.

  5. The social values at risk from sea-level rise

    SciTech Connect (OSTI)

    Graham, Sonia, E-mail: sonia.graham@unimelb.edu.au [Department of Resource Management and Geography, The University of Melbourne, 221 Bouverie St., Carlton, Victoria 3053 (Australia)] [Department of Resource Management and Geography, The University of Melbourne, 221 Bouverie St., Carlton, Victoria 3053 (Australia); Barnett, Jon, E-mail: jbarn@unimelb.edu.au [Department of Resource Management and Geography, The University of Melbourne, 221 Bouverie St., Carlton, Victoria 3053 (Australia)] [Department of Resource Management and Geography, The University of Melbourne, 221 Bouverie St., Carlton, Victoria 3053 (Australia); Fincher, Ruth, E-mail: r.fincher@unimelb.edu.au [Department of Resource Management and Geography, The University of Melbourne, 221 Bouverie St., Carlton, Victoria 3053 (Australia)] [Department of Resource Management and Geography, The University of Melbourne, 221 Bouverie St., Carlton, Victoria 3053 (Australia); Hurlimann, Anna, E-mail: anna.hurlimann@unimelb.edu.au [Faculty of Architecture, Building and Planning, The University of Melbourne, Architecture and Planning Building, Parkville, Victoria 3010 (Australia)] [Faculty of Architecture, Building and Planning, The University of Melbourne, Architecture and Planning Building, Parkville, Victoria 3010 (Australia); Mortreux, Colette, E-mail: colettem@unimelb.edu.au [Department of Resource Management and Geography, The University of Melbourne, 221 Bouverie St., Carlton, Victoria 3053 (Australia)] [Department of Resource Management and Geography, The University of Melbourne, 221 Bouverie St., Carlton, Victoria 3053 (Australia); Waters, Elissa, E-mail: elissa.waters@unimelb.edu.au [Department of Resource Management and Geography, The University of Melbourne, 221 Bouverie St., Carlton, Victoria 3053 (Australia)] [Department of Resource Management and Geography, The University of Melbourne, 221 Bouverie St., Carlton, Victoria 3053 (Australia)

    2013-07-15T23:59:59.000Z

    Analysis of the risks of sea-level rise favours conventionally measured metrics such as the area of land that may be subsumed, the numbers of properties at risk, and the capital values of assets at risk. Despite this, it is clear that there exist many less material but no less important values at risk from sea-level rise. This paper re-theorises these multifarious social values at risk from sea-level rise, by explaining their diverse nature, and grounding them in the everyday practices of people living in coastal places. It is informed by a review and analysis of research on social values from within the fields of social impact assessment, human geography, psychology, decision analysis, and climate change adaptation. From this we propose that it is the ‘lived values’ of coastal places that are most at risk from sea-level rise. We then offer a framework that groups these lived values into five types: those that are physiological in nature, and those that relate to issues of security, belonging, esteem, and self-actualisation. This framework of lived values at risk from sea-level rise can guide empirical research investigating the social impacts of sea-level rise, as well as the impacts of actions to adapt to sea-level rise. It also offers a basis for identifying the distribution of related social outcomes across populations exposed to sea-level rise or sea-level rise policies.

  6. PROPERTY MANUAL Berkeley Laboratory Property Management

    E-Print Network [OSTI]

    Knowles, David William

    of Energy (DOE). The Property Management charter ensures the efficient and effective protection and controlPROPERTY MANUAL Issued by Berkeley Laboratory Property Management Lawrence Berkeley National of Property Management Policies · I. Parties and Organizations Responsible for Property · II. Acquiring

  7. University of Washington ENTERPRISE RISK MANAGEMENT

    E-Print Network [OSTI]

    Kaminsky, Werner

    University of Washington ENTERPRISE RISK MANAGEMENT 2010 Annual Report #12;ERM 2010 Annual Report 2 December 2010 "Enterprise Risk Management" (ERM) - a process - to integrate risk into strategic UW Enterprise Risk Management Framework . . . . . . . . . 6 Illustration of ERM Components

  8. Optimal risk sharing under distorted probabilities

    E-Print Network [OSTI]

    Ludkovski, Michael; Young, Virginia R.

    2009-01-01T23:59:59.000Z

    theory of risk. Geneva Pap. Risk Insurance Theory 25, 141–A. : Two-persons ef?cient risk-sharing and equilibria for36(2), 189–223 (2008) Optimal risk sharing under distorted

  9. Merging high resolution geophysical and geochemical surveys to...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    high resolution geophysical and geochemical surveys to reduce exploration risk at Glass Buttes, Oregon Merging high resolution geophysical and geochemical surveys to reduce...

  10. Photovoltaic Degradation Risk: Preprint

    SciTech Connect (OSTI)

    Jordan, D. C.; Kurtz, S. R.

    2012-04-01T23:59:59.000Z

    The ability to accurately predict power delivery over the course of time is of vital importance to the growth of the photovoltaic (PV) industry. Important cost drivers include the efficiency with which sunlight is converted into power, how this relationship changes over time, and the uncertainty in this prediction. An accurate quantification of power decline over time, also known as degradation rate, is essential to all stakeholders - utility companies, integrators, investors, and researchers alike. In this paper we use a statistical approach based on historical data to quantify degradation rates, discern trends and quantify risks related to measurement uncertainties, number of measurements and methodologies.

  11. Risk Management RM

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011 Strategic2 OPAM615_CostNSAR -DepartmentRetail DemandEnergyRisk Management Review

  12. AMERIND Risk Annual Conference and Trade Fair

    Broader source: Energy.gov [DOE]

    Hosted by the AMERIND Risk, this three-day conference includes risk management training, workers' safety, human resources, and more.

  13. Nanostructures having high performance thermoelectric properties

    SciTech Connect (OSTI)

    Yang, Peidong; Majumdar, Arunava; Hochbaum, Allon I; Chen, Renkun; Delgado, Raul Diaz

    2014-05-20T23:59:59.000Z

    The invention provides for a nanostructure, or an array of such nanostructures, each comprising a rough surface, and a doped or undoped semiconductor. The nanostructure is an one-dimensional (1-D) nanostructure, such a nanowire, or a two-dimensional (2-D) nanostructure. The nanostructure can be placed between two electrodes and used for thermoelectric power generation or thermoelectric cooling.

  14. Risk Management Policy Category: Strategic Management

    E-Print Network [OSTI]

    1 Risk Management Policy Category: Strategic Management 1. PURPOSE To support the University will be encouraged to speak openly and honestly. (iii) Managers will monitor risk and will disclose risks identified's risk appetite. 2.3. Risk management standards 2.3.1 The University's risk management framework

  15. A New Formula for Prostate Cancer Lymph Node Risk

    SciTech Connect (OSTI)

    Yu, James B., E-mail: james.b.yu@yale.ed [Department of Therapeutic Radiology, Yale School of Medicine, New Haven, CT (United States); Yale Cancer Center, New Haven, CT (United States); Makarov, Danil V. [Robert Wood Johnson Clinical Scholars Program, Yale School of Medicine, New Haven, CT (United States); Section of Urology, Yale School of Medicine, New Haven, CT (United States); Department of Veterans Affairs Connecticut Healthcare System, West Haven, CT (United States); Gross, Cary [Robert Wood Johnson Clinical Scholars Program, Yale School of Medicine, New Haven, CT (United States); Department of Internal Medicine, Yale School of Medicine, New Haven, CT (United States)

    2011-05-01T23:59:59.000Z

    Introduction: The successful treatment of prostate cancer depends on the accurate estimation of the risk of regional lymph node (LN) involvement. The Roach formula (RF) has been criticized as overestimating LN risk. A modification of the RF has been attempted by other investigators using simplified adjustment ratios: the Nguyen formula (NF). Methods and Materials: The National Cancer Institute Surveillance, Epidemiology, and End Results database was investigated for patients treated in 2004 through 2006 for whom at least 10 LN were examined at radical prostatectomy, cT1c or cT2 disease, and prostate-specific antigen (PSA) <26 ng/ml (N = 2,930). The Yale formula (YF) was derived from half of the sample (n = 1,460), and validated in the other half (n = 1,470). Results: We identified 2,930 patients. Only 4.6% of patients had LN+, and 72.6% had cT1c disease. Gleason (GS) 8-10 histology was found in 14.4% of patients. The YF for prediction of %LN+ risk is [GS - 5]x [PSA/3 + 1.5 x T], where T = 0, 1, and 2 for cT1c, cT2a, and cT2b/cT2c. Within each strata of predicted %LN+ risk, the actual %LN+ was closest to the YF. Using a >15% risk as an indicator of high-risk disease, the YF had increased sensitivity (39.0% vs. 13.6%) compared with the NF, without a significant reduction in specificity (94.9% vs. 98.8%). The NF was overly restrictive of the high-risk group, with only 2% of patients having a >15% risk of LN+ by that formula. Conclusion: The YF performed better than the RF and NF and was best at differentiating patients at high risk for LN+ disease.

  16. Alerting device and method for reminding a person of a risk

    DOE Patents [OSTI]

    Runyon, Larry (Richland, WA) [Richland, WA; Gunter, Wayne M. (West Richland, WA) [West Richland, WA; Pratt, Richard M. (Richland, WA) [Richland, WA

    2001-11-27T23:59:59.000Z

    An alerting device and method to remind personnel of a risk is disclosed. The device has at least two sensors, a logic controller, a power source, and an annunciator that delivers a visual message, with or without an audible alarm, about a risk to a person when the sensors detect the person exiting a predetermined space. In particular, the present invention reminds a person of a security, safety, or health risk upon exiting a predetermined space. More particularly, the present invention reminds a person of an information security risk relating to sensitive, proprietary, confidential, trade secret, classified, or intellectual property information.

  17. Risk assessment in environmental management

    SciTech Connect (OSTI)

    Asante-Duah, D.K.

    1998-07-01T23:59:59.000Z

    This book is a straightforward exposition of US EPA-based procedures for the risk assessment and risk management of contaminated land, interwoven with discussions on some of the key fundamentals on the fate and transport of chemicals in the environment and the toxic action of environmental chemicals. The book is logically structured, commencing with a general overview of the principles of risk assessment and the interface with environmental legislation. There follows an introduction to environmental fate and transport, modeling, toxicology and uncertainty analysis, and a discussion of the elements of a risk assessment (site characterization, exposure analysis, toxic action and risk characterization), intake of a chemical with its environmental concentration and activity-related parameters such as inhalation rate and exposure time. The book concludes with a discussion on the derivation of risk-based action levels and remediation goals.

  18. Information needs for risk assessment

    SciTech Connect (OSTI)

    DeRosa, C.T.; Choudhury, H.; Schoeny, R.S.

    1990-12-31T23:59:59.000Z

    Risk assessment can be thought of as a conceptual approach to bridge the gap between the available data and the ultimate goal of characterizing the risk or hazard associated with a particular environmental problem. To lend consistency to and to promote quality in the process, the US Environmental Protection Agency (EPA) published Guidelines for Risk Assessment of Carcinogenicity, Developmental Toxicity, Germ Cell Mutagenicity and Exposure Assessment, and Risk Assessment of Chemical Mixtures. The guidelines provide a framework for organizing the information, evaluating data, and for carrying out the risk assessment in a scientifically plausible manner. In the absence of sufficient scientific information or when abundant data are available, the guidelines provide alternative methodologies that can be employed in the risk assessment. 4 refs., 3 figs., 2 tabs.

  19. Enhanced ferroelectric and dielectric properties of (111)-oriented highly cation-ordered PbSc{sub 0.5}Ta{sub 0.5}O{sub 3} thin films

    SciTech Connect (OSTI)

    Chopra, Anuj [Max Planck Institute of Microstructure Physics, Weinberg 2, D-06120 Halle (Saale) (Germany); Faculty of Science and Technology, MESA Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE Enschede (Netherlands); Birajdar, Balaji I. [Max Planck Institute of Microstructure Physics, Weinberg 2, D-06120 Halle (Saale) (Germany); Special Centre for Nano Sciences, Jawaharlal Nehru University, New Delhi 110067 (India); Kim, Yunseok [Max Planck Institute of Microstructure Physics, Weinberg 2, D-06120 Halle (Saale) (Germany); School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon 440-746 (Korea, Republic of); Alexe, Marin [Max Planck Institute of Microstructure Physics, Weinberg 2, D-06120 Halle (Saale) (Germany); Department of Physics, University of Warwick, Coventry CV4 7AL (United Kingdom); Hesse, Dietrich [Max Planck Institute of Microstructure Physics, Weinberg 2, D-06120 Halle (Saale) (Germany)

    2013-12-14T23:59:59.000Z

    Cation-ordered (111)-oriented epitaxial PbSc{sub 0.5}Ta{sub 0.5}O{sub 3} (PST) thin films were deposited by pulsed laser deposition on SrRuO{sub 3}-electroded SrTiO{sub 3} (111) substrates at three different temperatures of 525?°C, 550?°C, and 575?°C. All the films were well crystalline and (111)-oriented at all the three growth temperatures; however, the films deposited at the temperatures other than 550?°C exhibited the presence of a pyrochlore phase. X-ray diffraction analysis and transmission electron microscopy measurements revealed that the films were epitaxial and highly cation-ordered. In comparison to (001)-oriented PST films, (111)-oriented films on SrRuO{sub 3}/SrTiO{sub 3} (111) exhibited enhanced ferroelectric and dielectric properties with a broad size distribution of cation-ordered domains (5–100?nm). At a measurement temperature of 100?K, the remnant polarization of PST (111) films is almost ?3 times larger than the remnant polarization observed for (001)-oriented PST films, which is attributed to the (111) orientation of the films, as the spontaneous polarization in PST lies close to the [111] direction. The observed dielectric constant and loss at 1?kHz were around 1145 and 0.11, respectively. The dielectric constant is thus almost three times higher than for previously reported (001)-oriented PST thin films, most probably due to the enhancement in cation-ordering.

  20. Risk prediction models for melanoma: A systematic review

    E-Print Network [OSTI]

    Usher-Smith, Juliet A.; Emery, Jon; Kassianos, Angelos P.; Walter, Fiona M.

    2014-06-03T23:59:59.000Z

    of Cambridge, Cambridge, UK. 2 General Practice and Primary Care Academic Centre, University of Melbourne, Australia. 3 School of Primary, Aboriginal and Rural Health Care, University of Western Australia, Australia. Running title: Risk prediction models... :1000129. 35. English, DR, Armstrong, BK. Identifying people at high risk of cutaneous malignant melanoma: Results from a case-control study in Western Australia. Br. Med. J. (Clin. Res. Ed). 1988; 296: 1285–1288. 36. Amir, E, Freedman, OC, Seruga...

  1. Historic Properties

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh School football High SchoolBundles toHiring-TP59.01 C5;44 4 o (Q3

  2. Optimization of Convex Risk Functions

    E-Print Network [OSTI]

    Megiddo

    2006-09-30T23:59:59.000Z

    Key words: Convex analysis; Stochastic optimization; Risk measures; Duality. MSC2000 Subject Classification: Primary: 90C15,90C48; Secondary: 91B30, ...

  3. Section 10: Risk Management Concepts

    E-Print Network [OSTI]

    2014-12-04T23:59:59.000Z

    Dec 2, 2014 ... In this lesson we will discuss some concepts from risk management and insurance. We will go over the basic definitions and discuss some ...

  4. Uncertainty quantification for evaluating impacts of caprock and reservoir properties on pressure buildup and ground surface displacement during geological CO2 sequestration

    SciTech Connect (OSTI)

    Bao, Jie; Hou, Zhangshuan; Fang, Yilin; Ren, Huiying; Lin, Guang

    2013-08-12T23:59:59.000Z

    A series of numerical test cases reflecting broad and realistic ranges of geological formation properties was developed to systematically evaluate and compare the impacts of those properties on geomechanical responses to CO2 injection. A coupled hydro-geomechanical subsurface transport simulator, STOMP (Subsurface Transport over Multiple Phases), was adopted to simulate the CO2 migration process and geomechanical behaviors of the surrounding geological formations. A quasi-Monte Carlo sampling method was applied to efficiently sample a high-dimensional parameter space consisting of injection rate and 14 subsurface formation properties, including porosity, permeability, entry pressure, irreducible gas and aqueous saturation, Young’s modulus, and Poisson’s ratio for both reservoir and caprock. Generalized cross-validation and analysis of variance methods were used to quantitatively measure the significance of the 15 input parameters. Reservoir porosity, permeability, and injection rate were found to be among the most significant factors affecting the geomechanical responses to the CO2 injection. We used a quadrature generalized linear model to build a reduced-order model that can estimate the geomechanical response instantly instead of running computationally expensive numerical simulations. The injection pressure and ground surface displacement are often monitored for injection well safety, and are believed can partially reflect the risk of fault reactivation and seismicity. Based on the reduced order model and response surface, the input parameters can be screened for control the risk of induced seismicity. The uncertainty of the subsurface structure properties cause the numerical simulation based on a single or a few samples does not accurately estimate the geomechanical response in the actual injection site. Probability of risk can be used to evaluate and predict the risk of injection when there are great uncertainty in the subsurface properties and operation conditions.

  5. Page 1 of 2 Risk Management March 2012 Risk Management

    E-Print Network [OSTI]

    Page 1 of 2 Risk Management March 2012 Risk Management Supervisor's Vehicle Incident Report-Employee Volunteer Drivers License No. State of Issue UO Certification Date UO Driver Training Date Vehicle Information: License No. Make Model Year UO Vehicle # Motorpool Outside Rental Personal Vehicle Incident

  6. Examining the Risk of Nuclear Trafficking

    SciTech Connect (OSTI)

    Balatsky, Galya [Los Alamos National Laboratory; Severe, William R [Los Alamos National Laboratory; Schoeneck, Jeffery [DHS

    2009-01-01T23:59:59.000Z

    The need to stop illicit trafficking of nuclear and radioactive materials around the world is undeniable and urgent. This issue is particularly evident due to the highly dangerous consequences of the risks involved, the known interest of terrorist groups in acquiring such materials and the vulnerability of theft and diversion of such materials. Yet the phenomenon of nuclear trafficking remains a subject where the unknown dominates what is known on the subject. The trafficking panel at the Institute for Nuclear Materials Management (INMM) Workshop on Reducing the Risk of Radioactive and Nuclear Materials that took place in Albuquerque, New Mexico, March 10-11, 2009, dealt with some of the issues associated with nuclear trafficking. Different points of view on how to better address trafficking and thwart perpetrator efforts were discussed. This paper presents some of these views and addresses practical measures that should be considered to improve the situation.

  7. WON EXPOSURE AND LUNG CANCER RISK

    E-Print Network [OSTI]

    unknown authors

    As information on indoor air quality accumulated * it became apparent that radon and its progeny are invariably present in indoor environments and that concentrations may reach unacceptably high levels. The lung cancer excess anong miners exposed to radon progeny raised concern that exposure to radon progeny might also cause lung cancer in the general population. This presentation first provides an ovemiew of radon daughter carcinogenesis, and then reviews the recent BEIR IV report. The report described a statistical model * based on analysis of data from four studies of miners, for estimating the lung cancer risk associated with exposure to radon progeny. Tbe analyses showed that the risk of radon exposure declines with time since exposure and with increasing age. The BEIR IV committee concluded that radon progeny and cigarette smoking interact in a multiplicative fashion and that exposure-dose relationships are similar for exposure in homes and in mines.

  8. Collective Risk Control And Group Security: The Unexpected Consequences of Differential Risk

    E-Print Network [OSTI]

    McGuire, Martin C; Ihori, Toshihiro

    2007-01-01T23:59:59.000Z

    2003) Group formation in risk-sharing arrangements, Reviewof Tokyo, Conference on risk management, August 2, 2002.2002) Collective international risk control: failure of the

  9. READ AND SIGN THE PARTIAL ASSUMPTION OF RISK ON REVERSE Risk Management 12/2012 Risk Management

    E-Print Network [OSTI]

    Oregon, University of

    READ AND SIGN THE PARTIAL ASSUMPTION OF RISK ON REVERSE Risk Management 12/2012 Risk Management Conditions of Volunteer Service Please send completed form to the Office of Risk Management: riskmanagement ___________________________________________ (name/title of department supervisor) and the Office of Risk Management, (541) 346-8316, within 24 hours

  10. About the relevance ofthe concept of risk acceptability in the risk analysis and risk management process: A decisional

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    About the relevance ofthe concept of« risk acceptability » in the risk analysis and risk management analysis and risk management are taken. This can be introduced by: ft) giving an image ofwhat are involved and participate to the risk management process. In France, the Toulouse disaster has revealed

  11. Joint Seminar Risk Management Institute &

    E-Print Network [OSTI]

    Chaudhuri, Sanjay

    Joint Seminar Risk Management Institute & Department of Decision Sciences Details of Seminar Date and statistics is leading to a greatly broadened theory of regression which draws on tools of convex analysis with factor analysis in finance and economics. Risk Management Institute Joint Seminar #12;

  12. Dynamical systems probabilistic risk assessment.

    SciTech Connect (OSTI)

    Denman, Matthew R.; Ames, Arlo Leroy

    2014-03-01T23:59:59.000Z

    Probabilistic Risk Assessment (PRA) is the primary tool used to risk-inform nuclear power regulatory and licensing activities. Risk-informed regulations are intended to reduce inherent conservatism in regulatory metrics (e.g., allowable operating conditions and technical specifications) which are built into the regulatory framework by quantifying both the total risk profile as well as the change in the risk profile caused by an event or action (e.g., in-service inspection procedures or power uprates). Dynamical Systems (DS) analysis has been used to understand unintended time-dependent feedbacks in both industrial and organizational settings. In dynamical systems analysis, feedback loops can be characterized and studied as a function of time to describe the changes to the reliability of plant Structures, Systems and Components (SSCs). While DS has been used in many subject areas, some even within the PRA community, it has not been applied toward creating long-time horizon, dynamic PRAs (with time scales ranging between days and decades depending upon the analysis). Understanding slowly developing dynamic effects, such as wear-out, on SSC reliabilities may be instrumental in ensuring a safely and reliably operating nuclear fleet. Improving the estimation of a plant's continuously changing risk profile will allow for more meaningful risk insights, greater stakeholder confidence in risk insights, and increased operational flexibility.

  13. On the origin of the giant isotopic effect of hydrogen on the magnetic properties of YFe2A4.2 (A 5 H, D): A high pressure study

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    in room-temperature magnetic refrigeration has appeared, which promises several advantages over convenOn the origin of the giant isotopic effect of hydrogen on the magnetic properties of YFe2A4.2 (A 5 on the magnetic properties of YFe2A4.2 compounds (A ¼ H, D) and probe the role of the cell volume difference, we

  14. Assessing node risk and vulnerability in epidemics on networks

    E-Print Network [OSTI]

    Rogers, Tim

    2015-01-01T23:59:59.000Z

    Which nodes are most vulnerable to an epidemic spreading through a network, and which carry the highest risk of causing a major outbreak if they are the source of the infection? Here we show how these questions can be answered to good approximation using the cavity method. Several curious properties of node vulnerability and risk are explored: some nodes are more vulnerable than others to weaker infections, yet less vulnerable to stronger ones; a node is always more likely to be caught in an outbreak than it is to start one, except when the disease has a deterministic lifetime; the rank order of node risk depends on the details of the distribution of infectious periods.

  15. DYNAMIC RISK MANAGEMENT IN ELECTRICITY PORTFOLIO OPTIMIZATION

    E-Print Network [OSTI]

    Eichhorn, Andreas

    DYNAMIC RISK MANAGEMENT IN ELECTRICITY PORTFOLIO OPTIMIZATION VIA POLYHEDRAL RISK FUNCTIONALS the dynamic decision structure appropriately. In energy risk management, which is typically carried out ex, for integrating risk management into a stochastic optimization framework, risk has to be quantified in a definite

  16. RMI 357e spring 2013 Risk Management

    E-Print Network [OSTI]

    Ghosh, Joydeep

    RMI 357e ­ spring 2013 1 Risk Management R M 357e Professor: Christopher McClellan Office: CBA 3 thomaspjacob@utexas.edu Syllabus ­ spring 2013 Textbook Risk Management for Enterprises and Individuals, v.1://students.flatworldknowledge.com/course/1112649 Risk Management: 357E. Risk Management - Upper-Division Course Principles of risk management

  17. Dielectric properties of aerogels

    SciTech Connect (OSTI)

    Hrubesh, L.W.; Keene, L.E.; Latorre, V.R. (Chemistry and Material Sciences Department, Lawrence Livermore National Laboratory, Livermore, California 94550 (United States))

    1993-07-01T23:59:59.000Z

    We have measured the real (dielectric constant) and imaginary (loss factor) components of the complex relative permittivity at 298 [degree]K using microwave frequencies (2, 10, and 18--40 GHz), for bulk SiO[sub 2]-aerogels and for two types of organic aerogels, resorcinol-formaldehyde (RF) and melamine-formaldehyde (MF). Measured dielectric constants are found to vary linearly between values of 1.0 and 2.0 for aerogel densities from 10 to 500 kg/m[sup 3]. For the same range of densities, the measured loss tangents vary linearly between values of 2[times]10[sup [minus]4] and 7[times]10[sup [minus]2]. The observed linearity of the dielectric properties with density in aerogels at microwave frequencies shows that their dielectric behavior is more gas-like than solid-like. The dielectric properties of aerogels are shown to be significantly affected by the adsorbed water internal to the bulk material. For example, water accounts for 7% of the dielectric constant and 70% of the loss at microwave frequencies for silica aerogels. Because of their very high porosity, even with the water content, the aerogels are among the few materials exhibiting such low dielectric properties. Our measurements show that aerogels with greater than 99% porosity have dielectric constants less than 1.03; these are the lowest values ever reported for a bulk solid material.

  18. Conceptual Model of Offshore Wind Environmental Risk Evaluation System

    SciTech Connect (OSTI)

    Anderson, Richard M.; Copping, Andrea E.; Van Cleve, Frances B.; Unwin, Stephen D.; Hamilton, Erin L.

    2010-06-01T23:59:59.000Z

    In this report we describe the development of the Environmental Risk Evaluation System (ERES), a risk-informed analytical process for estimating the environmental risks associated with the construction and operation of offshore wind energy generation projects. The development of ERES for offshore wind is closely allied to a concurrent process undertaken to examine environmental effects of marine and hydrokinetic (MHK) energy generation, although specific risk-relevant attributes will differ between the MHK and offshore wind domains. During FY10, a conceptual design of ERES for offshore wind will be developed. The offshore wind ERES mockup described in this report will provide a preview of the functionality of a fully developed risk evaluation system that will use risk assessment techniques to determine priority stressors on aquatic organisms and environments from specific technology aspects, identify key uncertainties underlying high-risk issues, compile a wide-range of data types in an innovative and flexible data organizing scheme, and inform planning and decision processes with a transparent and technically robust decision-support tool. A fully functional version of ERES for offshore wind will be developed in a subsequent phase of the project.

  19. Physical and Mechanical Properties of Niobium for SRF Science and Technology

    SciTech Connect (OSTI)

    Ganapati Rao Myneni

    2006-10-31T23:59:59.000Z

    Optimized mechanical and physical properties of high purity niobium are crucial for obtaining high performance SRF particle beam accelerator structures consistently. This paper summarizes these important material properties for both high purity polycrystalline and single crystal niobium.

  20. PRA and Risk Informed Analysis

    SciTech Connect (OSTI)

    Bernsen, Sidney A.; Simonen, Fredric A.; Balkey, Kenneth R.

    2006-01-01T23:59:59.000Z

    The Boiler and Pressure Vessel Code (BPVC) of the American Society of Mechanical Engineers (ASME) has introduced a risk based approach into Section XI that covers Rules for Inservice Inspection of Nuclear Power Plant Components. The risk based approach requires application of the probabilistic risk assessments (PRA). Because no industry consensus standard existed for PRAs, ASME has developed a standard to evaluate the quality level of an available PRA needed to support a given risk based application. The paper describes the PRA standard, Section XI application of PRAs, and plans for broader applications of PRAs to other ASME nuclear codes and standards. The paper addresses several specific topics of interest to Section XI. Important consideration are special methods (surrogate components) used to overcome the lack of PRA treatments of passive components in PRAs. The approach allows calculations of conditional core damage probabilities both for component failures that cause initiating events and failures in standby systems that decrease the availability of these systems. The paper relates the explicit risk based methods of the new Section XI code cases to the implicit consideration of risk used in the development of Section XI. Other topics include the needed interactions of ISI engineers, plant operating staff, PRA specialists, and members of expert panels that review the risk based programs.

  1. 2007 Wholesale Power Rate Case Initial Proposal : Risk Analysis Study.

    SciTech Connect (OSTI)

    United States. Bonneville Power Administration.

    2005-11-01T23:59:59.000Z

    The Federal Columbia River Power System (FCRPS), operated on behalf of the ratepayers of the PNW by BPA and other Federal agencies, faces many uncertainties during the FY 2007-2009 rate period. Among these uncertainties, the largest revolve around hydro conditions, market prices and river operations for fish recovery. In order to provide a high probability of making its U.S. Treasury payments, BPA performs a Risk Analysis as part of its rate-making process. In this Risk Analysis, BPA identifies key risks, models their relationships, and then analyzes their impacts on net revenues (total revenues less expenses). BPA subsequently evaluates in the ToolKit Model the Treasury Payment Probability (TPP) resulting from the rates, risks, and risk mitigation measures described here and in the Wholesale Power Rate Development Study (WPRDS). If the TPP falls short of BPA's standard, additional risk mitigation revenues, such as PNRR and CRAC revenues are incorporated in the modeling in ToolKit until the TPP standard is met. Increased wholesale market price volatility and six years of drought have significantly changed the profile of risk and uncertainty facing BPA and its stakeholders. These present new challenges for BPA in its effort to keep its power rates as low as possible while fully meeting its obligations to the U.S. Treasury. As a result, the risk BPA faces in not receiving the level of secondary revenues that have been credited to power rates before receiving those funds is greater. In addition to market price volatility, BPA also faces uncertainty around the financial impacts of operations for fish programs in FY 2006 and in the FY 2007-2009 rate period. A new Biological Opinion or possible court-ordered change to river operations in FY 2006 through FY 2009 may reduce BPA's net revenues included Initial Proposal. Finally, the FY 2007-2009 risk analysis includes new operational risks as well as a more comprehensive analysis of non-operating risks. Both the operational and non-operational risks will be described in Section 2.0 of this study. Given these risks, if rates are designed using BPA's traditional approach of only adding Planned Net Revenues for Risk (PNRR), power rates would need to recover a much larger ''risk premium'' to meet BPA's TPP standard. As an alternative to high fixed risk premiums, BPA is proposing a risk mitigation package that combines PNRR with a variable rate mechanism similar to the cost recovery adjustment mechanisms used in the FY 2002-2006 rate period. The proposed risk mitigation package is less expensive on a forecasted basis because the rates can be adjusted on an annual basis to respond to uncertain financial outcomes. BPA is also proposing a Dividend Distribution Clause (DDC) to refund reserves in excess of $800M to customers in the event net revenues in the next rate period exceed current financial forecasts.

  2. UNIVERSITY OF ABERDEEN RISK MANAGEMENT POLICY & PROCEDURES

    E-Print Network [OSTI]

    Levi, Ran

    UNIVERSITY OF ABERDEEN RISK MANAGEMENT POLICY & PROCEDURES 1 INTRODUCTION This document sets out the policy and procedures for risk management within the University and replaces earlier documentation. The risk management process is formally integrated with the University's strategic planning process

  3. Financial Policy Manual RISK MANAGEMENT POLICIES

    E-Print Network [OSTI]

    Plotkin, Joshua B.

    Financial Policy Manual Page 1 RISK MANAGEMENT POLICIES 2601 Departmental Scope & Responsibility;Financial Policy Manual Page 1 2601 DEPARTMENTAL SCOPE & RESPONSIBILITY Subject: Risk Management & Insurance Effective: December 1986 Revised: May 2011 Last Reviewed: March 2014 Resp. Office: Risk Management

  4. Implementing Risk-Limiting Audits in California

    E-Print Network [OSTI]

    2009-01-01T23:59:59.000Z

    cast09.pdf. Philip B. Stark. Risk-limiting post-electionthe N.J. law the ?rst “risk-based statistical audit law. ”Holt bill does not limit risk. The Holt bill has a clause

  5. Predicting risk for the appearance of melanoma.

    E-Print Network [OSTI]

    Meyskens, Frank L Jr; Ransohoff, David F

    2006-01-01T23:59:59.000Z

    for projecting the absolute risk of breast cancer. J NatlD, Gail MH, et al: Cancer risk prediction models: A workshopal model of breast cancer risk prediction and implications

  6. Quantification of Wellbore Leakage Risk Using Non?destructive Borehole Logging Techniques

    SciTech Connect (OSTI)

    Duguid, Andrew; Butsch, Robert; Cary, J.; Celia, Michael; Chugunov, Nikita; Gasda, Sarah; Hovorka, Susan; Ramakrishnan, T. S.; Stamp, Vicki; Thingelstad, Rebecca; Wang, James

    2014-05-31T23:59:59.000Z

    Well integrity is important at all potential CCS locations and may play a crucial role establishing leakage risk in areas where there is a high density of existing wells that could be impacted by the storage operations including depleted petroleum fields where EOR or CCS will occur. To address a need for risk quantification methods that can be directly applied to individual wells using borehole logging tools a study was conducted using data from five wells in Wyoming. The objectives of the study were: Objective 1 Develop methods to establish the baseline flow parameters (porosity and permeability or mobility) from individual measurements of the material properties and defects in a well. Objective 2 Develop a correlation between field flow?property data and cement logs that can be used to establish the flow?properties of well materials and well features using cement mapping tools. Objective 3 Establish a method that uses the flow?property model (Objective 2) to analyze the statistical uncertainties associated with individual well leakage that can provide basis for uncertainty in risk calculations. The project objectives were met through the logging of five wells in Carbon and Natrona County Wyoming to collect data that was used to estimate individual and average well flow properties and model the results using ultrasonic data collected during the logging. Three of the five wells provided data on point and average flow properties for well annuli. Data from the other two wells were used to create models of cement permeability and test whether information collected in one well could be used to characterize another well. The results of the in?situ point measurements were confirmed by the lab measurements sidewall cores collected near the same depths Objective 1 was met using the data collected through logging, testing, and sampling. The methods were developed that can establish baseline flow parameters of wells by both point and average test methods. The methods to estimate the flow properties modeling of point pressure tests, modeling of vertical interference tests, and laboratory measurement of cased?hole sidewall cores The wells were in sufficiently good shape to allow the development of the characterization methods while still having enough defects to study differences in results as they relate to well integrity. Samples and tests analyzed from three of five wells studied in showed the cements were largely intact and had not degraded from exposure native brines. Log results taken in conjunction with the core measurements indicate that interfaces and/or problems with cement placement due to eccentering provide preferential flow paths for fluids, which can increase the effective permeability of the barrier several orders of magnitude above the permeability of intact cement. The results of the maps created using logging tools indicating that the cement condition and bond are generally good identify a need for more research to understand how logs can be used to predict effective well permeabilities such as those measured by the VITs in this study.

  7. Risk, media, and stigma at Rocky Flats

    SciTech Connect (OSTI)

    Flynn, J.; Peters, E.; Mertz, C.K.; Slovic, P. [Decision Research, Eugene, OR (United States)] [Decision Research, Eugene, OR (United States)

    1998-12-01T23:59:59.000Z

    Public responses to nuclear technologies are often strongly negative. Events, such as accidents or evidence of unsafe conditions at nuclear facilities, receive extensive and dramatic coverage by the news media. These news stories affect public perceptions of nuclear risks and the geographic areas near nuclear facilities. One result of these perceptions, avoidance behavior, is a form of technological stigma that leads to losses in property values near nuclear facilities. The social amplification of risk is a conceptual framework that attempts to explain how stigma is created through media transmission of information about hazardous places and public perceptions and decisions. This paper examines stigma associated with the US Department of energy`s Rocky Flats facility, a major production plant in the nation`s nuclear weapons complex, located near Denver, Colorado. This study, based upon newspaper analyses and a survey of Denver area residents, finds that the social amplification theory provides a reasonable framework for understanding the events and public responses that took place in regard to Rocky Flats during a 6-year period, beginning with an FBI raid of the facility in 1989.

  8. OPERATIONAL RISK RODNEY COLEMAN

    E-Print Network [OSTI]

    Coleman, Rodney

    is entered into with the aim of generating wealth, in the pursuit of returns Wiley Encyclopedia of Operations, not only because losses are widely expressed in monetary terms but also since the industry is highly the loss events are penalties imposed for contravening regulations, they enter the public domain. Onetime

  9. Risk assessment for the Waste Technologies Industries (WTI) hazardous waste incineration facility (East Liverpool, Ohio). Volume 5. Human health risk assessment; evaluation of potential risks from multipathway exposure to emissions

    SciTech Connect (OSTI)

    NONE

    1997-05-01T23:59:59.000Z

    The report provide estimates of: (1) individual risks based on central tendency exposure; (2) individual risks based on maximum environmental concentrations; (3) risks to highly exposed or susceptible subgroups of the population (e.g., subsistence farmers and school children); (4) risks associated with specific activities that may result in elevated exposures (e.g., subsistence fishermen and deer hunters); and (5) population risk. This approach allows for the estimation of risks to specific segments of the population taking into consideration activity patterns, number of individuals, and actual locations of individuals in these subgroups with respect to the facility. The fate and transport modeling of emissions from the facility to estimate exposures to identified subgroups is described.

  10. Superconductivity and Magnetism: Materials Properties

    E-Print Network [OSTI]

    .g. within high-Tc superconductivity, magnetic superconductors, MgB2, CMR materials, nanomagnetism and spin#12;#12;Superconductivity and Magnetism: Materials Properties and Developments #12;Copyright 2003 Risø National Laboratory Roskilde, Denmark ISBN 87-550-3244-3 ISSN 0907-0079 #12;Superconductivity

  11. Managing Risk in a Dynamic World Economy

    E-Print Network [OSTI]

    Harris, Harold M.; Benson, Geoffrey A.; Rosson, C. Parr

    1999-06-23T23:59:59.000Z

    Agreement on Tariffs and Trade (GATT). This leaflet, along with the others in this series, provides and overview of the globalization of U.S. agriculture, with special emphasis on implications for risk management. To be successful in a rapidly changing... trade since many countries already have low duty access to the U.S. market, while U.S. access to foreign markets may be limited by high tariffs or quotas. The value of U.S. agricultural exports consis- tently exceeds the cost of imports. It has been...

  12. Make boiler feedwater with lower risks

    SciTech Connect (OSTI)

    Colbert, G.L. [Rexene Products Co., Odessa, TX (United States); Reeves, G.; Combs, G. [Stone and Webster Engineering Corp., Houston, TX (United States); Edmonds, C. [Glegg Water Conditioning, Inc., Guelph, Ontario (Canada)

    1997-08-01T23:59:59.000Z

    The traditional approach to produce water suitable for high-pressure boilers requires using, handling and storing hazardous materials, i.e., acid and caustic. In this case history, an ethylene manufacturer chooses a new technology--electrodeionization (EDI)--to make feedwater for its ethylene furnace`s 1,200-psig steam system. The method was chosen in place of the traditional mixed-bed demineralizer (MBD) process. The new process is competitive in both operating and capital costs. The other bonus for the operating company was eliminating the handling of hazardous materials, thus reducing environmental and safety risks.

  13. DHS Office of Risk Management and Analysis | May 2011 1 Risk Management Issue Brief May 2011

    E-Print Network [OSTI]

    Schrijver, Karel

    DHS Office of Risk Management and Analysis | May 2011 1 Risk Management Issue Brief May 2011 Geomagnetic Storms: An Evaluation of Risks and Risk Assessments By the Office of Risk Management and Analysis thoughtful discussion of critical risk management subjects among homeland security enterprise partners

  14. Development of a Societal-Risk Goal for Nuclear Power Safety

    SciTech Connect (OSTI)

    Vicki Bier; Michael Corradini; Robert Youngblood; Caleb Roh; Shuji Liu

    2014-06-01T23:59:59.000Z

    The safety-goal policy of the Nuclear Regulatory Commission (NRC) has never included a true societal-risk goal. The NRC did acknowledge that the original goal for the risk of latent cancer facilities “was an individual risk goal not related to the number of people involved,” and stated that “a true societal risk goal would place a limit on the aggregate number of people affected.” However, this limitation was never satisfactorily addressed. Moreover, the safety goal has historically focused primarily on fatalities and latent health effects, while experience with actual nuclear accidents has shown that societal disruption can be significant even in accidents that yield only small to modest numbers of fatalities. Therefore, we have evaluated the social disruption effects from severe reactor accidents as a basis to develop a societal-risk goal for nuclear power plants, considering both health effects and non-health concerns such as property damage and land interdiction. Our initial analysis considered six different nuclear power plant sites in the U.S. for Boiling Water Reactors and Pressurized Water Reactors. The accident sequences considered for these two reactor types were station blackout sequences (both short-term and long-term SBO) as well as an STSBO with RCIC failure for the BWR and a Steam Generator Tube Rupture for the PWR. The source term release was an input in a RASCAL calculation of the off-site consequences using actual site-based weather data for each of the six plant sites randomly selected over a two-year period. The source term release plumes were then compared to Geographical Information System data for each site to determine the population affected and that would need to be evacuated to meet current emergency preparedness regulations. Our results to date suggest that number of people evacuated to meet current protective action guidelines appears to be a good proxy for disruption -- and, unlike other measures of disruption, has the advantage of being relatively straightforward to calculate for a given accident scenario and a given geographical location and plant site. Revised safety goals taking into account the potential for societal disruption could in principle be applied to the current generation of nuclear plants, but could also be used in evaluating and siting new technologies, such as small modular light water reactors, advanced Gen-IV high-temperature reactors, as well as reactor designs with passive safety features such as filtered vented containments.

  15. DOE Releases Electricity Subsector Cybersecurity Risk Management...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Electricity Subsector Cybersecurity Risk Management Process (RMP) Guideline DOE Releases Electricity Subsector Cybersecurity Risk Management Process (RMP) Guideline May 23, 2012 -...

  16. Optimization Online - Multilevel Optimization Modeling for Risk ...

    E-Print Network [OSTI]

    Jonathan Eckstein

    2014-08-24T23:59:59.000Z

    Aug 24, 2014 ... Abstract: Coherent risk measures have become a popular tool for incorporating risk aversion into stochastic optimization models. For dynamic ...

  17. Risk factors for equine laminitis

    E-Print Network [OSTI]

    Polzer, John Patrick

    1995-01-01T23:59:59.000Z

    logistic regression to assess age, breed, sex, and seasonality as risk factors for equine laminitis. There were 70 acute cases, 183 chronic cases, and 779 controls. No statistical association was found between age, breed, sex, or seasonality...

  18. Integrated risk information system (IRIS)

    SciTech Connect (OSTI)

    Tuxen, L. [Environmental Protection Agency, Washington, DC (United States)

    1990-12-31T23:59:59.000Z

    The Integrated Risk Information System (IRIS) is an electronic information system developed by the US Environmental Protection Agency (EPA) containing information related to health risk assessment. IRIS is the Agency`s primary vehicle for communication of chronic health hazard information that represents Agency consensus following comprehensive review by intra-Agency work groups. The original purpose for developing IRIS was to provide guidance to EPA personnel in making risk management decisions. This original purpose for developing IRIS was to guidance to EPA personnel in making risk management decisions. This role has expanded and evolved with wider access and use of the system. IRIS contains chemical-specific information in summary format for approximately 500 chemicals. IRIS is available to the general public on the National Library of Medicine`s Toxicology Data Network (TOXNET) and on diskettes through the National Technical Information Service (NTIS).

  19. Risk Management In Major Projects 

    E-Print Network [OSTI]

    Baker, Scott William

    The integration of risk management in major projects within the construction and oil and gas industries has never been more significant especially as these projects are becoming larger and more complex. The increased ...

  20. Utility View of Risk Assessment

    E-Print Network [OSTI]

    Bickham, J.

    This paper will address a utility perspective in regard to risk assessment, reliability, and impact on the utility system. Discussions will also include the critical issues for utilities when contracting for energy and capacity from cogenerators...

  1. Health risks of energy technologies

    SciTech Connect (OSTI)

    Travis, C.C.; Etnier, E.L. (eds.)

    1983-01-01T23:59:59.000Z

    This volume examines occupational, public health, and environmental risks of the coal fuel cycle, the nuclear fuel cycle, and unconventional energy technologies. The 6 chapters explore in detail the relationship between energy economics and risk analysis, assess the problems of applying traditional cost-benefit analysis to long-term environmental problems (such as global carbon dioxide levels), and consider questions about the public's perception and acceptance of risk. Also included is an examination of the global risks associated with current and proposed levels of energy production and comsumption from all major sources. A separate abstract was prepared for each of the 6 chapters; all are included in Energy Abstracts for Policy Analysis (EAPA) and four in Energy Research Abstracts (ERA).

  2. Risk Aversion in Inventory Management

    E-Print Network [OSTI]

    Chen, Xin

    Traditional inventory models focus on risk-neutral decision makers, i.e., characterizing replenishment strategies that maximize expected total profit, or equivalently, minimize expected total cost over a planning horizon. ...

  3. Inherited risk for common disease

    E-Print Network [OSTI]

    Banava, Helen

    2007-01-01T23:59:59.000Z

    Linkage disequilibrium studies have discovered few gene-disease associations for common diseases. The explanation has been offered that complex modes of inheritance govern risk for cancers, cardiovascular and cerebrovascular ...

  4. Halide and Oxy-Halide Eutectic Systems for High Performance High...

    Broader source: Energy.gov (indexed) [DOE]

    candidates. * Experimental test systems are under development for high temperature corrosion analysis and test. * High temperature fluid properties (salts mixtures with or...

  5. High temperature crystal structures and superionic properties of SrCl{sub 2}, SrBr{sub 2}, BaCl{sub 2} and BaBr{sub 2}

    SciTech Connect (OSTI)

    Hull, Stephen, E-mail: stephen.hull@stfc.ac.uk [The ISIS Facility, STFC Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11 0QX (United Kingdom); Norberg, Stefan T. [The ISIS Facility, STFC Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11 0QX (United Kingdom); Department of Chemical and Biological Engineering, Chalmers University of Technology, SE-412 96 Gothenburg (Sweden); Ahmed, Istaq; Eriksson, Sten G. [Department of Chemical and Biological Engineering, Chalmers University of Technology, SE-412 96 Gothenburg (Sweden); Mohn, Chris E. [Department of Chemistry and Centre for Materials Science and Nanotechnology, University of Oslo, P.O. Box 1033 Blindern, N-0315 Oslo (Norway)

    2011-11-15T23:59:59.000Z

    The structural properties of the binary alkaline-earth halides SrCl{sub 2}, SrBr{sub 2}, BaCl{sub 2} and BaBr{sub 2} have been investigated from ambient temperature up to close to their melting points, using the neutron powder diffraction technique. Fluorite-structured SrCl{sub 2} undergoes a gradual transition to a superionic phase at 900-1100 K, characterised by an increasing concentration of anion Frenkel defects. At a temperature of 920(3) K, the tetragonal phase of SrBr{sub 2} undergoes a first-order transition to a cubic fluorite phase. This high temperature phase shows the presence of extensive disorder within the anion sublattice, which differs from that found in superionic SrCl{sub 2}. BaCl{sub 2} and BaBr{sub 2} both adopt the cotunnite crystal structure under ambient conditions. BaCl{sub 2} undergoes a first-order structural transition at 917(5) K to a disordered fluorite-structured phase. The relationship between the (disordered) crystal structures and the ionic conductivity behaviour is discussed and the influence of the size of the mobile anion on the superionic behaviour is explored. - Graphical abstract: Anomalous behaviour of the lattice expansion of SrCl{sub 2} at temperatures of {approx}1000 K is associated with the gradual transition to a superionic phase, whilst SrBr{sub 2} undergoes a first-order structural transition ({beta}{yields}{alpha}) to a fluorite-structured superionic phase at 920(3) K. Highlights: > Anomalous behaviour of the lattice expansion of SrCl{sub 2} occurs at temperatures {approx}1000 K. > Crystal structure of {beta}-SrBr{sub 2} is described in detail. > On heating, SrBr{sub 2} and BaCl{sub 2} transform to a fluorite-structured superionic phase. > Temperature dependence of the BaCl{sub 2} and BaBr{sub 2} structures is presented. > Nature of the superionic phases within the alkaline-earth halides is discussed.

  6. Materials for the scavanging of hydrogen at high temperatures

    DOE Patents [OSTI]

    Shepodd, Timothy J. (Livermore, CA); Phillip, Bradley L. (Shaker Heights, OH)

    1997-01-01T23:59:59.000Z

    A hydrogen getter composition comprising a double or triple bonded hydrocarbon with a high melting point useful for removing hydrogen gas, to partial pressures below 0.01 torr, from enclosed spaces and particularly from vessels used for transporting or containing fluids at elevated temperatures. The hydrogen getter compositions disclosed herein and their reaction products will neither melt nor char at temperatures in excess of 100.degree. C. They possess significant advantages over conventional hydrogen getters, namely low risk of fire or explosion, no requirement for high temperature activation or operation, the ability to absorb hydrogen even in the presence of contaminants such as water, water vapor, common atmospheric gases and oil mists and are designed to be disposed within the confines of the apparatus. These getter materials can be mixed with binders, such as fluropolymers, which permit the getter material to be fabricated into useful shapes and/or impart desirable properties such as water repellency or impermeability to various gases.

  7. Materials for the scavanging of hydrogen at high temperatures

    DOE Patents [OSTI]

    Shepodd, Timothy J. (330 Thrasher Ave., Livermore, Alameda County, CA 94550); Phillip, Bradley L. (20976 Fairmount Blvd., Shaker Heights, Cuyahoga County, OH 44120)

    1997-01-01T23:59:59.000Z

    A hydrogen getter composition comprising a double or triple bonded hydrocarbon with a high melting point useful for removing hydrogen gas, to partial pressures below 0.01 torr, from enclosed spaces and particularly from vessels used for transporting or containing fluids at elevated temperatures. The hydrogen getter compostions disclosed herein and their reaction products will neither melt nor char at temperatures in excess of 100C. They possess significant advantages over conventional hydrogen getters, namely low risk of fire or explosion, no requirement for high temperature activation or operation, the ability to absorb hydrogen even in the presence of contaminants such as water, water vapor, common atmospheric gases and oil mists and are designed to be disposed within the confines of the apparatus. These getter materials can be mixed with binders, such as fluropolymers, which permit the getter material to be fabricated into useful shapes and/or impart desirable properties such as water repellency or impermeability to various gases.

  8. The Paradoxes of Military Risk Assessment: Will the Enterprise Risk Assessment Model, Composite Risk Management and Associated

    E-Print Network [OSTI]

    Johnson, Chris

    to assess the nation's military preparedness. However, risk management is not a panacea for the problemsThe Paradoxes of Military Risk Assessment: Will the Enterprise Risk Assessment Model, Composite Risk Management and Associated Techniques Provide the Predicted Benefits? Chris. W. Johnson, Glasgow

  9. An Introduction to Risk with a Focus on Design Diversity in the Stockpile

    SciTech Connect (OSTI)

    Noone, Bailey C [Los Alamos National Laboratory

    2012-08-13T23:59:59.000Z

    The maintenance and security of nuclear weapons in the stockpile involves decisions based on risk analysis and quantitative measures of risk. Risk is a factor in all decisions, a particularly important factor in decisions of a large scale. One example of high-risk decisions we will discuss is the risk involved in design diversity within the stockpile of nuclear weapons arsenal. Risk is defined as 'possibility of loss or injury' and the 'degree of probability of such loss' (Kaplan and Garrick 12). To introduce the risk involved with maintaining the weapons stockpile we will draw a parallel to the design and maintenance of Southwest Airlines fleet of Boeing 737 planes. The clear benefits for cost savings in maintenance of having a uniform fleet are what historically drove Southwest to have only Boeing 737s in their fleet. Less money and resources are need for maintenance, training, and materials. Naturally, risk accompanies those benefits. A defect in a part of the plane indicates a potential defect in that same part in all the planes of the fleet. As a result, safety, business, and credibility are at risk. How much variety or diversity does the fleet need to mitigate that risk? With that question in mind, a balance is needed to accommodate the different risks and benefits of the situation. In a similar way, risk is analyzed for the design and maintenance of nuclear weapons in the stockpile. In conclusion, risk must be as low as possible when it comes to the nuclear weapons stockpile. Design and care to keep the stockpile healthy involves all aspects of risk management. Design diversity is a method that helps to mitigate risk, and to help balance options in stockpile stewardship.

  10. Discrete Fracture Network Models for Risk Assessment of Carbon Sequestration in Coal

    SciTech Connect (OSTI)

    Jack Pashin; Guohai Jin; Chunmiao Zheng; Song Chen; Marcella McIntyre

    2008-07-01T23:59:59.000Z

    A software package called DFNModeler has been developed to assess the potential risks associated with carbon sequestration in coal. Natural fractures provide the principal conduits for fluid flow in coal-bearing strata, and these fractures present the most tangible risks for the leakage of injected carbon dioxide. The objectives of this study were to develop discrete fracture network (DFN) modeling tools for risk assessment and to use these tools to assess risks in the Black Warrior Basin of Alabama, where coal-bearing strata have high potential for carbon sequestration and enhanced coalbed methane recovery. DFNModeler provides a user-friendly interface for the construction, visualization, and analysis of DFN models. DFNModeler employs an OpenGL graphics engine that enables real-time manipulation of DFN models. Analytical capabilities in DFNModeler include display of structural and hydrologic parameters, compartmentalization analysis, and fluid pathways analysis. DFN models can be exported to third-party software packages for flow modeling. DFN models were constructed to simulate fracturing in coal-bearing strata of the upper Pottsville Formation in the Black Warrior Basin. Outcrops and wireline cores were used to characterize fracture systems, which include joint systems, cleat systems, and fault-related shear fractures. DFN models were constructed to simulate jointing, cleating, faulting, and hydraulic fracturing. Analysis of DFN models indicates that strata-bound jointing compartmentalizes the Pottsville hydrologic system and helps protect shallow aquifers from injection operations at reservoir depth. Analysis of fault zones, however, suggests that faulting can facilitate cross-formational flow. For this reason, faults should be avoided when siting injection wells. DFN-based flow models constructed in TOUGH2 indicate that fracture aperture and connectivity are critical variables affecting the leakage of injected CO{sub 2} from coal. Highly transmissive joints near an injection well have potential to divert a large percentage of an injected CO{sub 2} stream away from a target coal seam. However, the strata-bound nature of Pottsville fracture systems is a natural factor that mitigates the risk of long-range leakage and surface seepage. Flow models indicate that cross-formational flow in strata-bound joint networks is low and is dissipated by about an order of magnitude at each successive bedding contact. These models help confirm that strata-bound joint networks are self-compartmentalizing and that the thick successions of interbedded shale and sandstone separating the Pottsville coal zones are confining units that protect shallow aquifers from injection operations at reservoir depth. DFN models are powerful tools for the simulation and analysis of fracture networks and can play an important role in the assessment of risks associated with carbon sequestration and enhanced coalbed methane recovery. Importantly, the stochastic nature DFN models dictates that they cannot be used to precisely reproduce reservoir conditions in a specific field area. Rather, these models are most useful for simulating the fundamental geometric and statistical properties of fracture networks. Because the specifics of fracture architecture in a given area can be uncertain, multiple realizations of DFN models and DFN-based flow models can help define variability that may be encountered during field operations. Using this type of approach, modelers can inform the risk assessment process by characterizing the types and variability of fracture architecture that may exist in geologic carbon sinks containing natural fractures.

  11. RISK SEVERITY GUIDELINES For Issues Management Application

    E-Print Network [OSTI]

    RISK SEVERITY GUIDELINES For Issues Management Application OIA/OCA Risk Methodology, Document # 04 to LBNL #12;RISK SEVERITY GUIDELINES For Issues Management Application OIA/OCA Risk Methodology, Document.03.001.000, Rev. 3 Issue Management Program Application 11-30-13 IMPACT Impact is determined by considering what

  12. UNIVERSITY COLLEGE CORK RISK MANAGEMENT POLICY

    E-Print Network [OSTI]

    Schellekens, Michel P.

    1 UNIVERSITY COLLEGE CORK RISK MANAGEMENT POLICY 1. Risk Management 1.1 Responsibility of accountability, probity and compliance. Risk management is an essential element of the process of governance. 1.2 The HEA Code of Governance of Irish Universities emphasises the importance of Risk Management to good

  13. MASTER OF SCIENCE DEGREES IN Risk Management

    E-Print Network [OSTI]

    Johnson Jr.,, Ray

    MASTER OF SCIENCE DEGREES IN Risk Management About Queens College Often referred to as "the jewel.92$4#"!,&&%"*)0&$(.&/$6):,$)$-#")5,#$)*5$5,,4,#$&'%00$ &,/$%!$/6,7$6"4,$/"$&/)7$"*$/"4$"!$/6,%#$3,05&; Queens College master's degrees in Risk Management will help Master's Degrees in Risk Management Queens College offers 30credit MS in Risk Management degrees

  14. QUANTITATIVE RISK MANAGEMENT: CONCEPTS, TECHNIQUES AND TOOLS*

    E-Print Network [OSTI]

    Embrechts, Paul

    QUANTITATIVE RISK MANAGEMENT: CONCEPTS, TECHNIQUES AND TOOLS* Paul Embrechts Department of Mathematics ETH Zurich www.math.ethz.ch/~embrechts #12;QUANTITATIVE RISK MANAGEMENT: CONCEPTS, TECHNIQUES Theorems of Quantitative Risk Management · PE's Desert-Island Copula · Example 1: Credit Risk · Example 2

  15. Topics in Quantitative Risk Management Paul Embrechts

    E-Print Network [OSTI]

    Embrechts, Paul

    Topics in Quantitative Risk Management Paul Embrechts ETH-Z¨urich 1. Basel II and its risk management consequences 2. An overview of credit risk models 3. Modelling extremes: use and limitations 4@math.ethz.ch Homepage: http://www.math.ethz.ch/embrechts #12;Lecture 1: Basel II and its risk management consequences

  16. Schur Convex Functionals: Fatou Property and Representation Bogdan Grechuk and Michael Zabarankin

    E-Print Network [OSTI]

    probability space. 1 Introduction In risk analysis and finance, the uncertainty inherent in a random variable representations for positively homogeneous convex functionals have long been a major mod- eling tool in decision property. In particular, the existing quantile representations for law invariant coherent risk measures

  17. Mass regulation in response to predation risk can indicate population declines

    E-Print Network [OSTI]

    In theory, survival rates and consequent population status might be predictable from instantaneous-dependent predation risk, starvation risk. Ecology Letters (2007) 10: 1­11 IN T ROD U CTI ON In theory, survival rates, they are likely to be experiencing a high quality foraging environment that should lead to higher survival

  18. A total risk assessment methodology for security assessment.

    SciTech Connect (OSTI)

    Aguilar, Richard; Pless, Daniel J.; Kaplan, Paul Garry; Silva, Consuelo Juanita; Rhea, Ronald Edward; Wyss, Gregory Dane; Conrad, Stephen Hamilton

    2009-06-01T23:59:59.000Z

    Sandia National Laboratories performed a two-year Laboratory Directed Research and Development project to develop a new collaborative risk assessment method to enable decision makers to fully consider the interrelationships between threat, vulnerability, and consequence. A five-step Total Risk Assessment Methodology was developed to enable interdisciplinary collaborative risk assessment by experts from these disciplines. The objective of this process is promote effective risk management by enabling analysts to identify scenarios that are simultaneously achievable by an adversary, desirable to the adversary, and of concern to the system owner or to society. The basic steps are risk identification, collaborative scenario refinement and evaluation, scenario cohort identification and risk ranking, threat chain mitigation analysis, and residual risk assessment. The method is highly iterative, especially with regard to scenario refinement and evaluation. The Total Risk Assessment Methodology includes objective consideration of relative attack likelihood instead of subjective expert judgment. The 'probability of attack' is not computed, but the relative likelihood for each scenario is assessed through identifying and analyzing scenario cohort groups, which are groups of scenarios with comparable qualities to the scenario being analyzed at both this and other targets. Scenarios for the target under consideration and other targets are placed into cohort groups under an established ranking process that reflects the following three factors: known targeting, achievable consequences, and the resources required for an adversary to have a high likelihood of success. The development of these target cohort groups implements, mathematically, the idea that adversaries are actively choosing among possible attack scenarios and avoiding scenarios that would be significantly suboptimal to their objectives. An adversary who can choose among only a few comparable targets and scenarios (a small comparable target cohort group) is more likely to choose to attack the specific target under analysis because he perceives it to be a relatively unique attack opportunity. The opposite is also true. Thus, total risk is related to the number of targets that exist in each scenario cohort group. This paper describes the Total Risk Assessment Methodology and illustrates it through an example.

  19. Risk management in concurrent engineering in presence of intelligent agents

    E-Print Network [OSTI]

    Fox, Mark S.

    Risk management in concurrent engineering in presence of intelligent agents Taner Bilgi describe how a specific facet of systems engineering (risks) can be managed for large, concurrent with risks. Risk management has three stages to it: 1. Risk assessment 2. Risk analysis 3. Risk handling Risk

  20. Identification of High-Speed Rail Ballast Flight Risk Factors and Risk Mitigation Strategies

    E-Print Network [OSTI]

    Barkan, Christopher P.L.

    Francesco Bedini Jacobini, Erol Tutumluer, Mohd Rapik Saat Rail Transportation and Engineering Center (Rail

  1. Risk mapping of highly pathogenic avian influenza distribution and spread

    E-Print Network [OSTI]

    Peterson, A. Townsend; Williams, Richard A.J.

    2008-01-01T23:59:59.000Z

    of the birds of the world. Lynx Editions, Madrid, Spain. Ducatez, M. F., C. M. Olinger, A. A. Owoade, S. De Landtsheer, W. Ammerlaan, H. G. Niesters, A. D. Osterhaus, R. A. Fouchier, and C. P. Muller. 2006. Avian flu: multiple introductions of H5N1 in Nigeria...

  2. High Performance Lipoprotein Profiling for Cardiovascular Risk Assessment

    E-Print Network [OSTI]

    Larner, Craig

    2012-10-19T23:59:59.000Z

    the presence of CVD in clinical studies between cohorts of subjects that had been previously diagnosed with CVD and cohorts of subjects that had been identified as healthy controls (CTRL) based on a clear angiography. The lipoprotein density profiles were...

  3. Identifying some high risk populations for mental retardation

    E-Print Network [OSTI]

    Duesterhoft, Kenneth Wayne

    1980-01-01T23:59:59.000Z

    - ' $3 0 It- 0 cC 5- O 0 Cl I 0 0 IO X 0 I IG C! OJ O dl III lO 0 0 I/l Cl O m I 0 0 I? Since maternal age is a continuous variable and such a variable cannot be subjected to a chi square it was necessary to categor1ze this data...'s Family 2I K X ILI 0 Y ?I IZ IL O og I? ILI z w In ILI 0 I- ILI I- ~z O O LLJ O C) (f) 22 FIGURE 4 Relative Frequencies of the Distribution of Institutionalized IG) and Community Based (CG) Groups of Mentally Retarded Individuals...

  4. High-Impact, Low-Frequency Event Risk Report

    Office of Environmental Management (EM)

    the work recently completed by the U.S. Commission to Assess the Threat to the United States from Electromagnetic Pulse (EMP) Attack (U.S. EMP Commission) 14 , the...

  5. GAO High Risk List - An Update - David Trimble, Government Accountability

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport inEnergy0.pdfTechnologies ProgramOutfittedof6ExecutiveOffice | Department of

  6. High-Impact, Low-Frequency Event Risk Report

    Broader source: Energy.gov (indexed) [DOE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy ChinaofSchaefer To:Department of EnergySeacrist, Senior FellowDepartment

  7. SPRU Removes High-Risk Radioactive Waste | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn'tOrigin ofEnergy atLLC - FE DKT. 10-160-LNG - ORDER 2913|| DepartmentPro Forma Contract

  8. A socio-technical account of risk

    E-Print Network [OSTI]

    Dean, Wesley Raymond

    1994-01-01T23:59:59.000Z

    to determining risk. Roger E. and Jeanne X. Kasperson propose a conception of risk that is nevertheless still a species of the positivist concept. Unlike Starr and Whipple, the Kaspersons conception of risk focuses heavily on the influence of the human... Roger and Jeanne Kasperson. Not only does she question the manner in which risks are chosen for analysis, she also challenges the legitimacy of the methodologies associated with quantitative risk analysis. Jasanoff does this by performing a cross...

  9. Merging high resolution geophysical and geochemical surveys to...

    Broader source: Energy.gov (indexed) [DOE]

    Merging high resolution geophysical and geochemical surveys to reduce exploration risk at Glass Buttes, Oregon Patrick Walsh Ormat Nevada Inc. Innovative technologies May 19, 2010...

  10. Unit 15: Risk Management To explain the concept of risk & to develop its role

    E-Print Network [OSTI]

    Finkelstein, Anthony

    1 Unit 15: Risk Management Objectives Ð To explain the concept of risk & to develop its role within the software development process Ð To introduce the use of risk management as a means of identifying ¥ Techniques & heuristics for the identification, analysis, treatment & monitoring of risk ¥ Risk management

  11. RISK MANAGEMENT AND RISK ANALYSIS-BASED DECISION TOOLS FOR ATTACKS ON

    E-Print Network [OSTI]

    Wang, Hai

    RISK MANAGEMENT AND RISK ANALYSIS- BASED DECISION TOOLS FOR ATTACKS ON ELECTRIC POWER Simonoff, J.usc.edu/create Report #04-004DRAFT #12;Risk Management and Risk Analysis-Based Decision Tools for Attacks on Electric for Risk and Economic Analysis of Terrorism Events University of Southern California Los Angeles

  12. Methodology of organizational learning in risk management A method of organizational risk perception by the stakeholders

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Methodology of organizational learning in risk management A method of organizational risk Experience reflection, organizational risks, food-related sanitary alert, risk perception. Abstract for organizational risks applied to the management of sanitary alerts by the General Directorate for Food (DGAl

  13. Managing discovery risks--A Tevatron case study

    SciTech Connect (OSTI)

    Bakul Banerjee

    2004-07-28T23:59:59.000Z

    To meet the increasing need for higher performance, Management of Fermi National Accelerator Laboratory has undertaken various projects to improve systems associated with the Tevatron high-energy particle collider located at Batavia, Illinois. One of the larger projects is the Tevatron Beam Position Monitor (BPM) system. The objective of this project is to replace the existing BPM electronics and software system that was originally installed during early 1980s, along with the original construction of the Tevatron.The original system consists of 236 beam position monitors located around the underground tunnel of the accelerator. Above ground control systems are attached to these monitors using pickup cables. When the Tevatron collider is operational, signals received from the BPMs are used to perform a number of control and diagnostic tasks. The original system can only capture the proton signals from the collider. The new system, when fully operational, will be able to capture combined proton and antiproton signals and will be able to separate the antiproton signal from the combined signal at high resolution. This significant enhancement was beyond the range of technical capabilities when the Tevatron was constructed about two decades ago. To take advantage of exceptional progress made in the hardware and software area in past two decades, Department of Energy approved funding of the BPM electronics and software replacement project. The approximate length of the project is sixteen months with a budget of four million dollars not including overhead, escalation, and contingencies. Apart from cost and schedule risks, there are two major risks associated with this research and development project. The primary risk is the risk of discovery. Since the Tevatron beam path is highly complex, BPMs have to acquire and process a large amount of data. In this environment, analysis of data to separate antiproton signals is even more complex. Finding an optimum algorithm that can be implemented with current state of the art hardware and software technology is even more complex. The second most important risk is the risk of unavailability of the premiere high energy physics scientific facility to worldwide users. This paper presents a model of minimizing these risks using a phased model of project management. To complete the project successfully, it is essential to keep track of the constraints imposed by uncertainties in the discovery phase while maintaining the highest possible availability of the Tevatron. In this paper, a methodology based on earned value management system is explained to measure and manage discovery risks. Metrics based on the initial basis of estimate and familiar earned value measures are used to monitor risks of discovery. Subsequently, these metrics are used to refine the project and adjust tasks and resource assignments to minimize the unavailability of the user facility. One of the measures is the variance at phase completion. From the phased model of the WBS, variance at completion is examined for various project baselines at the end of project phases. This allowed for understanding the risk of not only cost and schedule, but also the discovery risks. Since similar risk measurement data is not available within the organization, these metrics will also allow us to define risk baselines for future scientific projects that involve discovery along with state of the art system development.

  14. Air Risk Information Support Center

    SciTech Connect (OSTI)

    Shoaf, C.R.; Guth, D.J. [Environmental Protection Agency, Washington, DC (United States)

    1990-12-31T23:59:59.000Z

    The Air Risk Information Support Center (Air RISC) was initiated in early 1988 by the US Environmental Protection Agency`s (EPA) Office of Health and Environmental Assessment (OHEA) and the Office of Air Quality Planning and Standards (OAQPS) as a technology transfer effort that would focus on providing information to state and local environmental agencies and to EPA Regional Offices in the areas of health, risk, and exposure assessment for toxic air pollutants. Technical information is fostered and disseminated by Air RISCs three primary activities: (1) a {open_quotes}hotline{close_quotes}, (2) quick turn-around technical assistance projects, and (3) general technical guidance projects. 1 ref., 2 figs.

  15. Initial Decision and Risk Analysis

    SciTech Connect (OSTI)

    Engel, David W.

    2012-02-29T23:59:59.000Z

    Decision and Risk Analysis capabilities will be developed for industry consideration and possible adoption within Year 1. These tools will provide a methodology for merging qualitative ranking of technology maturity and acknowledged risk contributors with quantitative metrics that drive investment decision processes. Methods and tools will be initially introduced as applications to the A650.1 case study, but modular spreadsheets and analysis routines will be offered to industry collaborators as soon as possible to stimulate user feedback and co-development opportunities.

  16. ORISE: Crisis and Risk Communication

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)Integrated CodesTransparencyDOE ProjectCrisis and Risk Communication Crisis and Risk

  17. High-Power Electrochemical Storage Devices and Plug-in Hybrid...

    Broader source: Energy.gov (indexed) [DOE]

    conducting the high risk, high cost research and development associated with advanced battery systems. USABC Ahsan Habib, March 08 4 Organization USABCElectrochemical Energy...

  18. Improved understanding of geologic CO{sub 2} storage processes requires risk-driven field experiments

    SciTech Connect (OSTI)

    Oldenburg, C.M.

    2011-06-01T23:59:59.000Z

    The need for risk-driven field experiments for CO{sub 2} geologic storage processes to complement ongoing pilot-scale demonstrations is discussed. These risk-driven field experiments would be aimed at understanding the circumstances under which things can go wrong with a CO{sub 2} capture and storage (CCS) project and cause it to fail, as distinguished from accomplishing this end using demonstration and industrial scale sites. Such risk-driven tests would complement risk-assessment efforts that have already been carried out by providing opportunities to validate risk models. In addition to experimenting with high-risk scenarios, these controlled field experiments could help validate monitoring approaches to improve performance assessment and guide development of mitigation strategies.

  19. LAVA (Los Alamos Vulnerability and Risk Assessment Methodology): A conceptual framework for automated risk analysis

    SciTech Connect (OSTI)

    Smith, S.T.; Lim, J.J.; Phillips, J.R.; Tisinger, R.M.; Brown, D.C.; FitzGerald, P.D.

    1986-01-01T23:59:59.000Z

    At Los Alamos National Laboratory, we have developed an original methodology for performing risk analyses on subject systems characterized by a general set of asset categories, a general spectrum of threats, a definable system-specific set of safeguards protecting the assets from the threats, and a general set of outcomes resulting from threats exploiting weaknesses in the safeguards system. The Los Alamos Vulnerability and Risk Assessment Methodology (LAVA) models complex systems having large amounts of ''soft'' information about both the system itself and occurrences related to the system. Its structure lends itself well to automation on a portable computer, making it possible to analyze numerous similar but geographically separated installations consistently and in as much depth as the subject system warrants. LAVA is based on hierarchical systems theory, event trees, fuzzy sets, natural-language processing, decision theory, and utility theory. LAVA's framework is a hierarchical set of fuzzy event trees that relate the results of several embedded (or sub-) analyses: a vulnerability assessment providing information about the presence and efficacy of system safeguards, a threat analysis providing information about static (background) and dynamic (changing) threat components coupled with an analysis of asset ''attractiveness'' to the dynamic threat, and a consequence analysis providing information about the outcome spectrum's severity measures and impact values. By using LAVA, we have modeled our widely used computer security application as well as LAVA/CS systems for physical protection, transborder data flow, contract awards, and property management. It is presently being applied for modeling risk management in embedded systems, survivability systems, and weapons systems security. LAVA is especially effective in modeling subject systems that include a large human component.

  20. The 'Becoming' Insurable of Terrorism Risk in the US: Imagining Systemic Risk

    E-Print Network [OSTI]

    Bougen, Philip

    2011-01-01T23:59:59.000Z

    Works Cited Beck, U. (1992). Risk society: towards a newSage. Beck, U. (1999). World risk society . London: Polity.The terrorist threat: world risk society revisited. Theory,

  1. Integrated Disposal Facility Risk Assessment

    SciTech Connect (OSTI)

    MANN, F. M.

    2003-06-03T23:59:59.000Z

    An environmental risk assessment associated with the disposal of projected Immobilized Low-Activity Waste, solid wastes and failed or decommissioned melters in an Integrated Disposal Facility was performed. Based on the analyses all performance objectives associated with the groundwater, air, and intruder pathways were met.

  2. Decision Support and Risk Management

    E-Print Network [OSTI]

    and emergency management officials during the planning, incident management preparedness, and response phasesDecision Support and Risk Management CVMDM: Community Vaccination and Mass Dispensing Model What and the performance of prophylaxis supply logistics and PODs. Decision and Information Sciences Division Decision

  3. Numerical Convergence Properties of Option Pricing PDEs with Uncertain Volatility

    E-Print Network [OSTI]

    Forsyth, Peter A.

    is then simply the cost of this hedge. The principal source of risk is the price of the underlying assetNumerical Convergence Properties of Option Pricing PDEs with Uncertain Volatility D. M. Pooley , P, 2001 Abstract The pricing equations derived from uncertain volatility models in finance are often cast

  4. THE ROLE OF RISK MODELS IN THE FINANCIAL CRISIS bridges vol. 19, October 2008 / Pielke's Perspective

    E-Print Network [OSTI]

    Colorado at Boulder, University of

    technologies in the form of highly complex financial risk models. When the story of the current financial instruments possible during normal times are virtually useless during times of crisis. A second problem

  5. Complex Mechanical Properties of Steel

    E-Print Network [OSTI]

    Dimitriu, Radu

    that in this latter regime, the slope of the hot–strength versus temperature plot is identical to that of creep rupture–strength versus temperature. This significant outcome can help dramatically reduce the requirement for expensive creep testing. Similarly, a model... measured in a tensile test. The rate of this deformation is a function of the material properties, exposure time, temperature and the applied load. Creep naturally becomes important when evaluating components that operate under high stresses...

  6. Agent-based mapping of credit risk for sustainable microfinance

    E-Print Network [OSTI]

    Lee, Joung-Hun; Podobnik, Boris; Iwasa, Yoh

    2015-01-01T23:59:59.000Z

    Inspired by recent ideas on how the analysis of complex financial risks can benefit from analogies with independent research areas, we propose an unorthodox framework for mapping microfinance credit risk---a major obstacle to the sustainability of lenders outreaching to the poor. Specifically, using the elements of network theory, we constructed an agent-based model that obeys the stylised rules of microfinance industry. We found that in a deteriorating economic environment confounded with adverse selection, a form of latent moral hazard may cause a regime shift from a high to a low loan repayment probability. An after-the-fact recovery, when possible, required the economic environment to improve beyond that which led to the shift in the first place. These findings suggest a small set of measurable quantities for mapping microfinance credit risk and, consequently, for balancing the requirements to reasonably price loans and to operate on a fully self-financed basis. We illustrate how the proposed mapping work...

  7. Towards secure virtual directories : a risk analysis framework.

    SciTech Connect (OSTI)

    Claycomb, William R.

    2010-07-01T23:59:59.000Z

    Directory services are used by almost every enterprise computing environment to provide data concerning users, computers, contacts, and other objects. Virtual directories are components that provide directory services in a highly customized manner. Unfortunately, though the use of virtual directory services are widespread, an analysis of risks posed by their unique position and architecture has not been completed. We present a detailed analysis of six attacks to virtual directory services, including steps for detection and prevention. We also describe various categories of attack risks, and discuss what is necessary to launch an attack on virtual directories. Finally, we present a framework to use in analyzing risks to individual enterprise computing virtual directory instances. We show how to apply this framework to an example implementation, and discuss the benefits of doing so.

  8. Recognizing and Assigning ESPC Risks and Responsibilities Using the Risk, Responsibility, and Performance Matrix

    Broader source: Energy.gov [DOE]

    Document offers guidance on how to recognize and assign energy savings performance contract (ESPC) risks and responsibilities using the risk, responsibility, and performance matrix, also known as RRPM.

  9. Development and validation of instantaneous risk model in nuclear power plant's risk monitor

    SciTech Connect (OSTI)

    Wang, J.; Li, Y.; Wang, F.; Wang, J.; Hu, L. [Inst. of Nuclear Energy Safety Technology, Chinese Academy of Sciences, Hefei, Anhui, 230031 (China); School of Nuclear Science and Technology, Univ. of Science and Technology of China, Hefei, Anhui, 230031 (China)

    2012-07-01T23:59:59.000Z

    The instantaneous risk model is the fundament of calculation and analysis in a risk monitor. This study focused on the development and validation of an instantaneous risk model. Therefore the principles converting from the baseline risk model to the instantaneous risk model were studied and separated trains' failure modes modeling method was developed. The development and validation process in an operating nuclear power plant's risk monitor were also introduced. Correctness of instantaneous risk model and rationality of converting method were demonstrated by comparison with the result of baseline risk model. (authors)

  10. Evaluating the risk-reduction benefits of wind energy

    SciTech Connect (OSTI)

    Brower, M.C.; Bell, K.; Spinney, P. [and others

    1997-05-01T23:59:59.000Z

    The question of uncertainty and risk in electric utility resource planning has received considerable attention in recent years. During the 1980s, many utilities suffered financial losses because of unexpectedly high plant construction costs and low growth in electricity demand. In addition, the introduction of competition to the electric industry is creating new risks for power companies. No longer will utilities be able to count on regulatory protections and a base of captive consumers to provide a stable market and adequate return on their investments. Alternative risk management strategies will have to be considered instead. One approach to managing risk is for a utility company to invest in diverse power sources such as wind power plants. Since wind plants consume no fuel, can be built in relatively small increments with short construction lead times, and generate no pollutants, it is often said that they offer significant protection from risks associated with conventional fossil-fuel power plants. So far there have been few efforts to quantify these benefits, however. The study compares the costs and risks of two competing resource options, a gas-fired combined cycle plant and a wind plant, both utility-owned, through decision analysis. The case study utility is Texas Utilities Electric, a very large investor-owned company serving an area with substantial, high-quality wind resources. The authors chose a specific moment in the future - the year 2003 - when the utility currently plans to build a large fossil-fueled power plant, and examined the implications for the utility`s expected revenues, costs, and profits if a wind plant were to be built instead.

  11. Conditional risk in volatility models Risk parameter in volatility models

    E-Print Network [OSTI]

    Jeanjean, Louis

    are of the form t = tt where (t) is iid, t > 0, t and t are independent. For GARCH-type (Generalized (GARCH), 2009) for an impressive list of more than one hundred GARCH-type models. Francq, Zakoian Risk Examples Standard GARCH(p,q) (Engle (82), Bollerslev (86)): 2 t = 0 + q i=1 0i 2 t-i + p j=1 0j2 t

  12. Assessing Risk and Driving Risk Mitigation for First-of-a-Kind Advanced Reactors

    SciTech Connect (OSTI)

    John W. Collins

    2011-09-01T23:59:59.000Z

    Planning and decision making amidst programmatic and technological risks represent significant challenges for projects. This presentation addresses the four step risk-assessment process needed to determine clear path forward to mature needed technology and design, license, and construct advanced nuclear power plants, which have never been built before, including Small Modular Reactors. This four step process has been carefully applied to the Next Generation Nuclear Plant. STEP 1 - Risk Identification Risks are identified, collected, and categorized as technical risks, programmatic risks, and project risks, each of which result in cost and schedule impacts if realized. These include risks arising from the use of technologies not previously demonstrated in a relevant application. These risks include normal and accident scenarios which the SMR could experience including events that cause the disablement of engineered safety features (typically documented in Phenomena Identification Ranking Tables (PIRT) as produced with the Nuclear Regulatory Commission) and design needs which must be addressed to further detail the design. Product - Project Risk Register contained in a database with sorting, presentation, rollup, risk work off functionality similar to the NGNP Risk Management System . STEP 2 - Risk Quantification The risks contained in the risk register are then scored for probability of occurrence and severity of consequence, if realized. Here the scoring methodology is established and the basis for the scoring is well documented. Product - Quantified project risk register with documented basis for scoring. STEP 3 - Risk Handling Strategy Risks are mitigated by applying a systematic approach to maturing the technology through Research and Development, modeling, test, and design. A Technology Readiness Assessment is performed to determine baseline Technology Readiness Levels (TRL). Tasks needed to mature the technology are developed and documented in a roadmap. Product - Risk Handling Strategy. STEP 4 - Residual Risk Work off The risk handling strategy is entered into the Project Risk Allocation Tool (PRAT) to analyze each task for its ability to reduce risk. The result is risk-informed task prioritization. The risk handling strategy is captured in the Risk Management System, a relational database that provides conventional database utility, including data maintenance, archiving, configuration control, and query ability. The tool's Hierarchy Tree allows visualization and analyses of complex relationships between risks, risk mitigation tasks, design needs, and PIRTs. Product - Project Risk Allocation Tool and Risk Management System which depict project plan to reduce risk and current progress in doing so.

  13. Property Custodians: Don't Throw Excessed JLab Property into...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    before these items may be disposed of. Remember: Only Property Management staff may recycle or dispose of excessed property. All unused, unneeded, or unserviceable property,...

  14. Accountable Property Representatives List and Property Pass Signer...

    Broader source: Energy.gov (indexed) [DOE]

    Accountable Property RepresentativesProperty Pass Authorization 1202015 Employee Authorized Organization Phone APR Primary Property Pass Signer PETEET, LISA J. ALL ORGS (202)...

  15. Hydraulic barrier design and applicability for managing the risk of CO2 leakage from deep saline

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Hydraulic barrier design and applicability for managing the risk of CO2 leakage from deep saline modifying the leak hydraulic properties (e.g. permeability) may be unfeasible. An appealing option.e. by creating a hydraulic barrier. The present article presents and discusses the operational and strategic

  16. Accident, Illness and Liability Coverage Risk Management in the 4-H Youth Development Program

    E-Print Network [OSTI]

    Tullos, Desiree

    1 Accident, Illness and Liability Coverage Risk Management in the 4-H Youth Development Program for injuries or damages to person or property of others (tort liability), when the volunteer is: · Working volunteer, and enrolled or listed with the Oregon State University Extension 4-H Youth Development Program

  17. RISK ASSESSMENT TECHNICAL EXPERT WORKING GROUP

    Broader source: Energy.gov [DOE]

    The Risk Assessment Technical Expert Working Group (RWG) is established to assist the Department of Energy (DOE) with the appropriate and effective use of quantitative risk assessment in nuclear...

  18. PFPC: Building an IT Risk Management Competency

    E-Print Network [OSTI]

    Westerman, George

    2005-07-29T23:59:59.000Z

    IT Risk management is becoming increasingly important for CIOs and their executive counterparts. Educators and managers have materials they can use to discuss specific IT risks in project management, security and other ...

  19. Minimizing Project Risk Through Financing Strategies

    E-Print Network [OSTI]

    Michaelson, M.

    One of the major barriers to greater corporate investment in energy conservation, cogeneration and alternative energy projects is the level of risk associated with these investments. Potential risks include technical malfunction of the equipment and...

  20. Modeling Risks in Infrastructure Asset Management

    E-Print Network [OSTI]

    Seyedolshohadaie, Seyed Reza

    2012-10-19T23:59:59.000Z

    in privatizing and operational risks in maintenance and rehabilitation of infrastructure facilities. To this end, a valuation procedure for valuing large-scale risky projects is proposed. This valuation approach is based on mean-risk portfolio optimization...