Sample records for inherent moisture consists

  1. Combination moisture and hydrogen getter

    DOE Patents [OSTI]

    Not Available

    1982-04-29T23:59:59.000Z

    A combination moisture and hydrogen getter comprises (a) a moisture getter comprising a readily oxidizable metal; and (b) a hydrogen getter comprising (i) a solid acetylenic compound and (ii) a hydrogenation catalyst. A method of scavenging moisture from a closed container uses the combination moisture and hydrogen getter to irreversibly chemically reduce the moisture and chemically bind the reusltant hydrogen.

  2. Fiber optic moisture sensor

    DOE Patents [OSTI]

    Kirkham, R.R.

    1984-08-03T23:59:59.000Z

    A method and apparatus for sensing moisture changes by utilizing optical fiber technology. One embodiment uses a reflective target at the end of an optical fiber. The reflectance of the target varies with its moisture content and can be detected by a remote unit at the opposite end of the fiber. A second embodiment utilizes changes in light loss along the fiber length. This can be attributed to changes in reflectance of cladding material as a function of its moisture content. It can also be affected by holes or inserts interposed in the cladding material and/or fiber. Changing light levels can also be coupled from one fiber to another in an assembly of fibers as a function of varying moisture content in their overlapping lengths of cladding material.

  3. Optimizing safety by inherent offshore platform design

    SciTech Connect (OSTI)

    Mansfield, D.P. [AEA Technology, Risley (United Kingdom); Kletz, T.A. [Kletz (T.A.), Cheadle (United Kingdom); Al-Hassan, T. [HSE Offshore Safety Div., Bootle (United Kingdom)

    1996-12-31T23:59:59.000Z

    Following the Cullen Report into the Piper Alpha Disaster, UK Operators and the Health and Safety Executive Offshore Safety Division (OSD) have been working together to bring in a new safety regime, progressively replacing prescriptive requirements with goal setting regulations to enable a more integrated approach to hazard management. This is allowing the industry to be more flexible and specific about the way it manages hazards throughout the life of the installation. In particular it is encouraging a hazards based focus to design which is changing the way installations are designed and which would promote the use of inherently safer design. Conventional installation design often relies on standard specification engineered safety systems such as shutdown systems and water deluge to control hazards, with less attention paid to minimizing the hazards at source. These add-on safety systems can be expensive to install and maintain, and may only be effective in some circumstances. This paper reports on a pilot study sponsored by OSD, involving offshore operators and design contractors, to assess the status of inherent safety in offshore installation design in the UK and to encourage its further use spreading best practice and examples of the benefits of the approach. The paper outlines the key considerations for implementation of inherently safer design, and describes some of the benefits these can bring to the industry. It also highlights the role regulations, industry initiatives and guidance can play in promoting inherently safer design both now and in the future. The study`s findings suggest that awareness of the inherent safety principles is limited to some safety specialists and designers, but that the industry is beginning to recognize the role and benefits of inherent safety. As a result its principles are starting to appear in some design procedures and hazard management guides.

  4. Characterizing and controlling the inherent dynamics of cyclophilin...

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

    and controlling the inherent dynamics of cyclophilin-A. Characterizing and controlling the inherent dynamics of cyclophilin-A. Abstract: With the recent advances in NMR relaxation...

  5. Moisture Metrics Project

    SciTech Connect (OSTI)

    Schuchmann, Mark

    2011-08-31T23:59:59.000Z

    the goal of this project was to determine the optimum moisture levels for biomass processing for pellets commercially, by correlating data taken from numerous points in the process, and across several different feedstock materials produced and harvested using a variety of different management practices. This was to be done by correlating energy consumption and material through put rates with the moisture content of incoming biomass ( corn & wheat stubble, native grasses, weeds, & grass straws), and the quality of the final pellet product.This project disseminated the data through a public website, and answering questions form universities across Missouri that are engaged in biomass conversion technologies. Student interns from a local university were employed to help collect data, which enabled them to learn firsthand about biomass processing.

  6. Inherently safe in situ uranium recovery

    DOE Patents [OSTI]

    Krumhansl, James L; Brady, Patrick V

    2014-04-29T23:59:59.000Z

    An in situ recovery of uranium operation involves circulating reactive fluids through an underground uranium deposit. These fluids contain chemicals that dissolve the uranium ore. Uranium is recovered from the fluids after they are pumped back to the surface. Chemicals used to accomplish this include complexing agents that are organic, readily degradable, and/or have a predictable lifetime in an aquifer. Efficiency is increased through development of organic agents targeted to complexing tetravalent uranium rather than hexavalent uranium. The operation provides for in situ immobilization of some oxy-anion pollutants under oxidizing conditions as well as reducing conditions. The operation also artificially reestablishes reducing conditions on the aquifer after uranium recovery is completed. With the ability to have the impacted aquifer reliably remediated, the uranium recovery operation can be considered inherently safe.

  7. Moisture absorption in hybrid composites

    E-Print Network [OSTI]

    Clark, Dan Laro

    1983-01-01T23:59:59.000Z

    . Calculated Moisture Profile: 8/F1552/F1858' ' 95~ RH Calculated Moisture Profile: F1558/F1852/F1558. 49'C, 954 RH. Calculated Moisture Profile: F155, 8. 49 C, 95% RH. Calculated Moisture Profile: F18518. 49'C, 95% RH. Effect of F185 Coating on F155.... Calculated Moisture Profile F18518-. 49'C, 95% RH. 1. 4 1. 05 0 . 35 I I I / / / I F155 18 F 1 8 5 1/F 1 5 5 8/Fl 85 0 0 16 25 32. 5 48. 75 Time(Hours) Figure 28. Effect of F185 Coating on F155 Core: 49'C, 95o HEI. Us Ut 1. 4 1. 05 7 . 35 I...

  8. 2002 DOE Final Inherently Governmental and Commercial Activities...

    Energy Savers [EERE]

    Inherently Governmental and Commercial Activities Inventory More Documents & Publications DOE FAIR 2007 (OMB).xls 2003 DOE IGCA Inventory Data for web.xls&0; OMBDOEFAIR2005.xls...

  9. Moisture and temperature effects in composite materials 

    E-Print Network [OSTI]

    Fang, Gwo-Ping

    1987-01-01T23:59:59.000Z

    ) Chairman of Advisory Committee: Dr. Y. Weitsman Th1s thesis concerns env1ronmental effects in graphite/epoxy composites, with emphas1s on environmentally induced damage. The thesis consists of two major parts. The first part presents an experimental 1... weight gain (in %) of a 12-ply unidirectional AS4/3502 graphite/epoxy laminate during exposure to 346'K, 95% R. H. environment. Data (i) and predictions of Flck's law (solid line) Moisture content (ln %) of a 12-ply unidirectional AS4/3502 graphite...

  10. Exterior Insulation Finish System (EIFS) Walls ORNL provides the tools to enable industry to engineer durable, moisture-tolerant

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    Exterior Insulation Finish System (EIFS) Walls ORNL provides the tools to enable industry the insulating value of walls and the energy efficiency of buildings. The EIFS concept came to America from in both moisture control and insulating value. EIFS's are inherently superior on thermal performance

  11. ENERGY INFRASTRUCTURE SURVIVABILITY, INHERENT LIMITATIONS, OBSTACLES AND MITIGATION STRATEGIES

    E-Print Network [OSTI]

    Krings, Axel W.

    ENERGY INFRASTRUCTURE SURVIVABILITY, INHERENT LIMITATIONS, OBSTACLES AND MITIGATION STRATEGIES technologically complex society makes our homeland security even more vulnerable. Therefore, knowing how vulnerable such systems are is essential to improving their intrinsic reliability/survivability (in

  12. Moisture Research - Optimizing Wall Assemblies

    SciTech Connect (OSTI)

    Arena, L.; Mantha, P.

    2013-05-01T23:59:59.000Z

    The Consortium for Advanced Residential Buildings (CARB) evaluated several different configurations of wall assemblies to determine the accuracy of moisture modeling and make recommendations to ensure durable, efficient assemblies. WUFI and THERM were used to model the hygrothermal and heat transfer characteristics of these walls.

  13. The moisture budget in relation to convection

    E-Print Network [OSTI]

    Scott, Robert Wilson

    1976-01-01T23:59:59.000Z

    Analyses of the local rate-of-change of moisture in the layer from 900-750 mb . . . . . . , . . . , . . . . . . 23 Analyses of the local rate-of-change of moisture in the layer from 750-500 mb 24 Vertical profiles of the net vertical boundary flux... of moisture related to MDR 26 10 Analyses of the net vertical boundary flux of moisture in the layer from 900-750 mb 28 Analyses of the net vertical boundary flux of moisture in the layer from 750-500 mb 29 12 Analyses of the net vertical boundary flux...

  14. Monitoring and controlling moisture during carpet and textile drying

    SciTech Connect (OSTI)

    Robinson, J.W.

    1995-02-01T23:59:59.000Z

    Industrial dryer/moisture control is usually performed by feedback type systems, i.e., sensors indirectly measure moisture content (MC) of the product after it leaves the dryer, or exhaust temperature from the last zone is used as an indicator of the existing MC. Such a control system is inherently weak because of the {open_quotes}after-the-fact{close_quotes} nature of the MC data. A feedback system may be improved by adding feedforward loops to handle disturbances to the system, e.g., variations in entering MC and feed rate. Such additions to the control system are expensive and require higher expertise for operating and maintaining. If the MC of the product could be measured inside the dryer, a control system could be offered that would be superior to feedback/feedforward types. This has not been possible up to this time because no MC sensor was capable of withstanding the atmosphere inside dryers. Moreover, the sample size would not have been large enough to be representative.

  15. Inherent structure formalism for quantum systems Frank H. Stillinger

    E-Print Network [OSTI]

    Stillinger, Frank

    counterparts. I. INTRODUCTION The inherent structure approach in classical statistical mechanics was introduced in classical statistical mechanics, using configurational mapping to distinguish particle packing effects from Hill, New Jersey 07974 (Received 27 April 1988; accepted 22 June 1988) A theoretical procedure

  16. Elemental Analyses of Hanford Surface Neutron Moisture Measurement Calibration Standard Samples

    SciTech Connect (OSTI)

    Watson, W.T., Westinghouse Hanford

    1996-07-31T23:59:59.000Z

    Elemental analyses have been performed on twenty samples taken from the moisture standards prepared to use in performing experimental calibrations of the surface neutron moisture measurement system. These standards consisted of mixtures of sand, hydrated alumina, and boron carbide. Elemental analyses were performed primarily to discover the quantities of any strong thermal neutron absorbers that may have been present in the mixture in unknown trace quantities.

  17. 14 ESS (trademark) switch inherent radiation-hardness assessment. Volume 1. Final report

    SciTech Connect (OSTI)

    Not Available

    1990-07-01T23:59:59.000Z

    The objective of Phase I of the 4 ESS Switch RHA Program documented in this report is the preliminary assessment of the inherent fallout-radiation susceptibility of the 4 ESS Switch. The approach described herein consists of the identification of the active microelectronic piece-parts used in the 4 ESS Switch; characterization of their radiation tolerance, based on available data; preliminary identification of hardness-critical packs; and preliminary analysis of 4 ESS Switch performance during expose to ambient (unshielded) fallout radiation, also based on available data. (Author)

  18. Moisture Control | Department of Energy

    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 33 111 1,613 122Commercial602 1,39732onMake Your NextHow EMMinutes: EMMissionof EnergyMoisture

  19. Moisture levels at which rice grains will not fissure from moisture adsorption

    E-Print Network [OSTI]

    Kamau, John Mugeto

    1985-01-01T23:59:59.000Z

    MOISTURE LEVELS AT WHICH RICE GRAINS WILL NOT FISSURE FROM MOISTURE ADSORPTION A Thesis JOHN MUGETO KAMAU Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE... August 1985 Major Subject: Agricultural Engineering MOISTURE LEVELS AT WHICH RICE GRAINS WILL NQT FISSURE FROM MOISTURE ADSORPTION A Thesis JOHN MUGETO KAMAU Approved as to style and content by: Otto R. Kunze (Chairman of Committee) Calvin B...

  20. Moisture Distribution and Flow During Drying of Wood and Fiber

    SciTech Connect (OSTI)

    Zink-Sharp, Audrey; Hanna, Robert B.

    2001-12-28T23:59:59.000Z

    New understanding, theories, and techniques for moisture flow and distribution were developed in this research on wood and wood fiber. Improved understanding of the mechanisms of flake drying has been provided. Observations of flake drying and drying rate curves revealed that rate of moisture loss consisted of two falling rate periods and no constant rate drying period was observed. Convective heat transfer controls the first period, and bound water diffusion controls the second period. Influence of lower drying temperatures on bending properties of wood flakes was investigated. Drying temperature was found to have a significant influence on bending stiffness and strength. A worksheet for calculation of the energy required to dry a single strandboard flake was developed but has not been tested in an industrial setting yet. A more complete understanding of anisotropic transverse shrinkage of wood is proposed based on test results and statistical analysis. A simplified mod el of a wood cell's cross-section was drawn for calculating differential transverse shrinkage. The model utilizes cell wall thickness and microfibrillar packing density and orientation. In spite of some phenomena of cell wall structure not yet understood completely, the results might explain anisotropic transverse shrinkage to a major extent. Boundary layer theory was found useful for evaluating external moisture resistance during drying. Simulated moisture gradients were quire comparable to the actual gradients in dried wood. A mathematical procedure for determining diffusion and surface emission coefficients was also developed. Thermal conductivity models of wood derived from its anatomical structure were created and tested against experimental values. Model estimations provide insights into changes in heat transfer parameters during drying. Two new techniques for measuring moisture gradients created in wood during drying were developed. A new technique that utilizes optical properties of cobalt chloride was developed for nondestructive determination of surface moisture content. Fundamental new understanding of drying characteristics in wood and fiber has been provided that can be used by researchers to improve drying of wood and fiber. The three techniques for measuring moisture content and gradients provided in this study are efficient, practical, and economical - easy to apply by industry and researchers. An energy consumption worksheet is provided as a first step toward reducing energy consumed during drying of lumber and strandboard flakes. However, it will need additional verification and testing.

  1. PREDICTION OF MOISTURE CONTENT AND MOISTURE GRADIENT OF AN OVERLAID PARTICLEBOARD1

    E-Print Network [OSTI]

    PREDICTION OF MOISTURE CONTENT AND MOISTURE GRADIENT OF AN OVERLAID PARTICLEBOARD1 Qinglin Wu and HPL backer. A model based on the diffusion theory was developed to predict MC and moisture distribution for a multi-ply wood composite panel. The model's prediction of the mean MC for a three-layer PB

  2. Consistent Validation of Manual and Automatic Sense Annotations with

    E-Print Network [OSTI]

    Navigli, Roberto

    interannotator agreement and voting can be applied to deal with the divergences between sense taggers. The tool employs semantic interconnection patterns to smooth possible divergences and support consistent an agreement. The problem depends on a variety of factors, ranging from the inherent subjectivity of the task

  3. Moisture Penetration Through Optical Fiber Coatings

    E-Print Network [OSTI]

    Matthewson, M. John

    Moisture Penetration Through Optical Fiber Coatings J. L. Armstrong, M. J. Matthewson and C. R for measuring the diffusion coefficients of water vapor through optical fiber polymer coatings has been. Kurkjian #12;732 International Wire & Cable Symposium Proceedings 1998 Moisture Penetration Through Optical

  4. Vadose Zone Soil Moisture Wicking Using Super Absorbent Polymers...

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

    Vadose Zone Soil Moisture Wicking Using Super Absorbent Polymers. Vadose Zone Soil Moisture Wicking Using Super Absorbent Polymers. Abstract: Super-absorbent polymers (SAPs) have...

  5. REDUCTION OF INHERENT MERCURY EMISSIONS IN PC COMBUSTION

    SciTech Connect (OSTI)

    John C. Kramlich; Rebecca N. Sliger; David J. Going

    1999-08-06T23:59:59.000Z

    Mercury emission compliance presents one of the major potential challenges raised by the 1990 Clean Air Act Amendments. Simple ways of controlling emissions have not been identified. The variability in the field data suggest that inherent mercury emissions may be reduced if the source of this inherent capture can be identified and controlled. The key mechanisms appear to involve the oxidation of mercury to Hg{sup 2}, generally producing the more reactive HgCl{sub 2}, followed by its capture by certain components of the fly ash or char, or in the air pollution control equipment. This research focuses on identifying the rate-limiting steps associated with the oxidation step. Work in this reporting period focused on the refinement of the rate constants used in the kinetic mechanism for mercury oxidation. The possible reactions leading to mercury oxidation are reviewed. Rate constants for these reactions are discussed, using both literature sources and detailed estimates. The resulting mechanism represents the best present picture of the overall chlorine homogeneous oxidation chemistry. Application of this mechanism to the data will be explored in the subsequent reporting period. Work conducted under the present grant has been the subject of two meeting papers presented during the reporting period (Sliger et al., 1998a,b).

  6. UNCORRECTEDPROOF One-dimensional soil moisture prole retrieval by assimilation of

    E-Print Network [OSTI]

    Walker, Jeff

    moisture and surface temperature data into a soil moisture and heat transfer model. The direct insertion

  7. On the inherent asymmetric nature of the complementary relationship of evaporation

    E-Print Network [OSTI]

    Szilagyi, Jozsef

    On the inherent asymmetric nature of the complementary relationship of evaporation Jozsef Szilagyi1-Taylor and Penman equations. Citation: Szilagyi, J. (2007), On the inherent asymmetric nature of the complementary

  8. The Soil Moisture Active Passive (SMAP) Mission

    E-Print Network [OSTI]

    Entekhabi, Dara

    The Soil Moisture Active Passive (SMAP) mission is one of the first Earth observation satellites being developed by NASA in response to the National Research Council's Decadal Survey. SMAP will make global measurements of ...

  9. REDUCTION OF INHERENT MERCURY EMISSIONS IN PC COMBUSTION

    SciTech Connect (OSTI)

    John C. Kramlich; Rebecca N. Sliger; David J. Going

    1999-08-06T23:59:59.000Z

    Mercury emission compliance presents one of the major potential challenges raised by the 1990 Clean Air Act Amendments. Simple ways of controlling emissions have not been identified. The variability in the field data suggest that inherent mercury emissions may be reduced if the source of this inherent capture can be identified and controlled. The key mechanisms appear to involve the oxidation of mercury to Hg{sup 2}, generally producing the more reactive HgCl{sub 2}, followed by its capture by certain components of the fly ash or char, or in the air pollution control equipment. This research focuses on identifying the rate-limiting steps associated with the oxidation step. Work in this reporting period focused on testing of the kinetic mechanism reported in the previous semiannual report, and the interpretation of data (both ours and literature). This model yields good qualitative agreement with the data and indicates that mercury oxidation occurs during the thermal quench of the combustion gases. The model also suggests that atomic chlorine is the key oxidizing species. The oxidation is limited to a temperature window between 700-400 C that is defined by the overlap of (1) a region of significant superequilibrium Cl concentration, and (2) a region where oxidized mercury is favored by equilibrium. Above 700 C reverse reactions effectively limit oxidized mercury concentrations. Below 400 C, atomic chlorine concentrations are too low to support further oxidation. The implication of these results are that homogeneous oxidation is governed primarily by (1) HCl concentration, (2) quench rate, and (3) background gas composition. Work conducted under the present grant has been the subject of one journal paper that was accepted for publication during the reporting period (Sliger et al., 1999).

  10. MoistureMap: A soil moisture monitoring, prediction and reporting system for sustainable land and water management

    E-Print Network [OSTI]

    Walker, Jeff

    9 MoistureMap: A soil moisture monitoring, prediction and reporting system for sustainable land soil moisture monitoring, prediction and reporting system (MoistureMap) for Australia uncertainty at 1km resolution, by assimilating (i) low-resolution passive microwave-derived surface soil

  11. Measuring soil moisture with imaging radars

    SciTech Connect (OSTI)

    Dubois, P.C.; Zyl, J. van [California Inst. of Tech., Pasadena, CA (United States). Jet Propulsion Lab.] [California Inst. of Tech., Pasadena, CA (United States). Jet Propulsion Lab.; Engman, T. [NASA Goddard Space Flight Center, Greenbelt, MD (United States)] [NASA Goddard Space Flight Center, Greenbelt, MD (United States)

    1995-07-01T23:59:59.000Z

    An empirical algorithm for the retrieval of soil moisture content and surface Root Mean Square (RMS) height from remotely sensed radar data was developed using scatterometer data. The algorithm is optimized for bare surfaces and requires two copolarized channels at a frequency between 1.5 and 11 GHz. It gives best results for kh {le} 2.5, {mu}{sub {upsilon}}{le}35%, and {theta}{ge}30{degree}. Omitting the usually weaker hv-polarized returns makes the algorithm less sensitive to system cross-talk and system noise, simplify the calibration process and adds robustness to the algorithm in the presence of vegetation. However, inversion results indicate that significant amounts of vegetation (NDVI>0.4) cause the algorithm to underestimate soil moisture and overestimate RMS height. A simple criteria based on the {sigma}{sub hv}{sup 0}/{sigma}{sub vv}{sup 0} ratio is developed to select the areas where the inversion is not impaired by the vegetation. The inversion accuracy is assessed on the original scatterometer data sets but also on several SAR data sets by comparing the derived soil moisture values with in-situ measurements collected over a variety of scenes between 1991 and 1994. Both spaceborne (SIR-C) and airborne (AIRSAR) data are used in the test. Over this large sample of conditions, the RMS error in the soil moisture estimate is found to be less than 4.2% soil moisture.

  12. Control of Moisture Ingress into Photovoltaic Modules

    SciTech Connect (OSTI)

    Kempe, M. D.

    2005-02-01T23:59:59.000Z

    During long-term exposure of photovoltaic modules to environmental stress, the ingress of water into the module is correlated with decreased performance. By using diffusivity measurements for water through encapsulants such as ethylene vinyl acetate (EVA), we have modeled moisture ingress using a finite-element analysis with atmospheric data from various locations such as Miami, Florida. This analysis shows that because of the high diffusivity of EVA, even an impermeable glass back-sheet alone is incapable of preventing significant moisture ingress from the edges for a 20-year lifecycle. This result has led us to investigate ways to protect modules from moisture through the use of different encapsulating chemistries and materials.

  13. Distributed fiber optic moisture intrusion sensing system

    DOE Patents [OSTI]

    Weiss, Jonathan D. (Albuquerque, NM)

    2003-06-24T23:59:59.000Z

    Method and system for monitoring and identifying moisture intrusion in soil such as is contained in landfills housing radioactive and/or hazardous waste. The invention utilizes the principle that moist or wet soil has a higher thermal conductance than dry soil. The invention employs optical time delay reflectometry in connection with a distributed temperature sensing system together with heating means in order to identify discrete areas within a volume of soil wherein temperature is lower. According to the invention an optical element and, optionally, a heating element may be included in a cable or other similar structure and arranged in a serpentine fashion within a volume of soil to achieve efficient temperature detection across a large area or three dimensional volume of soil. Remediation, moisture countermeasures, or other responsive action may then be coordinated based on the assumption that cooler regions within a soil volume may signal moisture intrusion where those regions are located.

  14. Influence of Moisture on Heating in Feeds.

    E-Print Network [OSTI]

    Richardson, L. R.; Halick, J. V.

    1953-01-01T23:59:59.000Z

    investigation was supported in part by a grant-in-aid from ~uthwestern Sugar and Molasses Company, New York, through urtesy of A. I. Kaplan, president. ?e are indebted to E. I. du Pont de Nemours and Company, ngton, Del. through the courtesy of F. M. Jornlin..., standards for the moisture content of all in- gredients used in feeds should be reevaluated. The absence of heating in molasses feeds will not be insured by establishing a standard for the moisture content of molasses alone. Standardr for molasses...

  15. 14 ESS (trademark) switch inherent radiation-hardness assessment. Volume 2. Appendices to final report. Final report

    SciTech Connect (OSTI)

    Not Available

    1990-07-01T23:59:59.000Z

    The objective of Phase I of the 4 ESS Switch RHA Program document in this report is the preliminary assessment of the Inherent fallout-radiation susceptibility of the 4 ESS Switch. The approach described herein consists of the identification of the active microelectronic piece-parts used in the 4 ESS Switch; characterization of their radiation tolerance, based on available data; preliminary identification of hardness-critical packs; and preliminary analysis of 4 ESS Switch performance during export to ambient (unshielded) fallout radiation, also based on available data.

  16. Assessment of NGNP Moisture Ingress Events

    SciTech Connect (OSTI)

    Bill Landman

    2011-04-01T23:59:59.000Z

    An assessment of modular HTGR moisture ingress events, making use of a phenomena identification and ranking process, was conducted by a panel of experts in the related areas for the U.S. next generation nuclear plant (NGNP) design. Consideration was given mainly to the prismatic core gas-cooled reactor configurations incorporating a steam generator within the primary circuit.

  17. 1. Control moisture. 2. Clean regularly.

    E-Print Network [OSTI]

    , water heaters, and fireplaces that burn fuel must vent to the outside. Stoves, ovens, and cook on the things we do to affect how healthy our home is. Step 1. Control Moisture Water and excessive humidity of pesticides. Food and water attract pests. Controlling food and water helps to minimize pests. Sealing

  18. artery-dilators inherent problems: Topics by E-print Network

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

    AND CLIMATE CHANGE: RESTRAINING THE PRESENT TO LIBERATE THE FUTURE Richard J. Lazarus Climate change may soon have its "lawmaking moment" in the United States. The inherent...

  19. Measurements of moisture suction in hot mix asphalt mixes 

    E-Print Network [OSTI]

    Kassem, Emad Abdel-Rahman

    2006-10-30T23:59:59.000Z

    with different bond energies and exhibited different field performance in terms of resistance to moisture damage. The suction measurements in sand asphalt specimens were used to calculate the moisture diffusion coefficient. The results revealed that water...

  20. Soil moisture modeling and scaling using passive microwave remote sensing

    E-Print Network [OSTI]

    Das, Narendra N.

    2007-04-25T23:59:59.000Z

    Soil moisture in the shallow subsurface is a primary hydrologic state governing land-atmosphere interaction at various scales. The primary objectives of this study are to model soil moisture in the root zone in a distributed manner and determine...

  1. Evaluation of moisture damage within asphalt concrete mixes 

    E-Print Network [OSTI]

    Shah, Brij D.

    2004-09-30T23:59:59.000Z

    as bond energy in order to predict moisture damage. Mixtures with the two types of bitumen and each aggregate with and without hydrated lime were evaluated. The hydrated lime substantially improved the resistance of the mixture to moisture damage....

  2. Mitigation of Severe Accident Consequences Using Inherent Safety Principles

    SciTech Connect (OSTI)

    R. A. Wigeland; J. E. Cahalan

    2009-12-01T23:59:59.000Z

    Sodium-cooled fast reactors are designed to have a high level of safety. Events of high probability of occurrence are typically handled without consequence through reliable engineering systems and good design practices. For accidents of lower probability, the initiating events are characterized by larger and more numerous challenges to the reactor system, such as failure of one or more major engineered systems and can also include a failure to scram the reactor in response. As the initiating conditions become more severe, they have the potential for creating serious consequences of potential safety significance, including fuel melting, fuel pin disruption and recriticality. If the progression of such accidents is not mitigated by design features of the reactor, energetic events and dispersal of radioactive materials may result. For severe accidents, there are several approaches that can be used to mitigate the consequences of such severe accident initiators, which typically include fuel pin failures and core disruption. One approach is to increase the reliability of the reactor protection system so that the probability of an ATWS event is reduced to less than 1 x 10-6 per reactor year, where larger accident consequences are allowed, meeting the U.S. NRC goal of relegating such accident consequences as core disruption to these extremely low probabilities. The main difficulty with this approach is to convincingly test and guarantee such increased reliability. Another approach is to increase the redundancy of the reactor scram system, which can also reduce the probability of an ATWS event to a frequency of less than 1 x 10-6 per reactor year or lower. The issues with this approach are more related to reactor core design, with the need for a greater number of control rod positions in the reactor core and the associated increase in complexity of the reactor protection system. A third approach is to use the inherent reactivity feedback that occurs in a fast reactor to automatically respond to the change in reactor conditions and to result in a benign response to these events. This approach has the advantage of being relatively simple to implement, and does not face the issue of reliability since only fundamental physical phenomena are used in a passive manner, not active engineered systems. However, the challenge is to present a convincing case that such passive means can be implemented and used. The purpose of this paper is to describe this third approach in detail, the technical basis and experimental validation for the approach, and the resulting reactor performance that can be achieved for ATWS events.

  3. Effect of varying moisture levels on sorghum stand establishment

    E-Print Network [OSTI]

    Kanyenji, Ben Machaki

    1991-01-01T23:59:59.000Z

    to germinate, emerge, and survive under low moisture situations. At the lowest moisture level (20% water holding capacity of the potted soil/media; 264 water on dry weight basis), germination was reduced by 50 percent. Hegari and CSM388 had the highest... germination performance at this moisture level. Seedling emergence was decreased by 60 percent from performance under optimum moisture (454 water holding capacity potted soil/media) and cultivers such as Segaolane and CSM388 had the highest emergence...

  4. INHERENT WATER OPTICAL PROPERTIES AT THE CARIBBEAN TIME SERIES STATION (CaTS)

    E-Print Network [OSTI]

    Gilbes, Fernando

    INHERENT WATER OPTICAL PROPERTIES AT THE CARIBBEAN TIME SERIES STATION (CaTS) Fernando Gilbes Rico 00681 ABSTRACT The temporal variability of the inherent water optical properties at the Caribbean wavelengths, but in all cases, the values were less than one. The correlation between bio-optical properties

  5. Author's personal copy Inherent and apparent optical properties of the complex estuarine waters of

    E-Print Network [OSTI]

    Meyers, Steven D.

    Author's personal copy Inherent and apparent optical properties of the complex estuarine waters management strategy used by the Tampa Bay Estuary Program since the 1990s led to improved water clarity 30 September 2012 Available online 22 October 2012 Keywords: inherent optical properties apparent

  6. Influence of inherent structure shear stress of supercooled liquids on their shear moduli

    E-Print Network [OSTI]

    Ingo Fuereder; Patrick Ilg

    2015-04-13T23:59:59.000Z

    Configurations of supercooled liquids residing in their local potential minimum (i.e. in their inherent structure, IS) were found to support a non-zero shear stress. This IS stress was attributed to the constraint to the energy minimization imposed by boundary conditions, which keep size and shape of the simulation cell fixed. In this paper we further investigate the influence of these boundary conditions on the IS stress. We investigate its importance for the computation of the low frequency shear modulus of a glass obtaining a consistent picture for the low- and high frequency shear moduli over the full temperature range. Hence, we find that the IS stress corresponds to a non-thermal contribution to the fluctuation term in the Born-Green expression. This leads to an unphysical divergence of the moduli in the low temperature limit if no proper correction for this term is applied. Furthermore, we clarify the IS stress dependence on the system size and put its origin on a more formal basis.

  7. Process for treating moisture laden coal fines

    DOE Patents [OSTI]

    Davis, Burl E. (New Kensington, PA); Henry, Raymond M. (Gibsonia, PA); Trivett, Gordon S. (South Surrey, CA); Albaugh, Edgar W. (Birmingham, AL)

    1993-01-01T23:59:59.000Z

    A process is provided for making a free flowing granular product from moisture laden caked coal fines, such as wet cake, by mixing a water immiscible substance, such as oil, with the caked coal, preferably under low shear forces for a period of time sufficient to produce a plurality of free flowing granules. Each granule is preferably comprised of a dry appearing admixture of one or more coal particle, 2-50% by weight water and the water immiscible substance.

  8. Hydrological consistency using multi-sensor remote sensing data for water and energy cycle studies

    E-Print Network [OSTI]

    Pan, Ming

    Hydrological consistency using multi-sensor remote sensing data for water and energy cycle studies and feedback of land surface and atmospheric processes over large space and time scales. Remote sensing-based variables including soil moisture (from AMSR-E), surface heat fluxes (from MODIS) and precipitation rates

  9. A multiblob approach to colloidal hydrodynamics with inherent lubrication

    E-Print Network [OSTI]

    Adolfo Vázquez-Quesada; Florencio Balboa Usabiaga; Rafael Delgado-Buscalioni

    2014-07-23T23:59:59.000Z

    This work presents an intermediate resolution model of the hydrodynamics of colloidal particles based on a mixed Eulerian-Lagrangian formulation. The particle is constructed with a small set of overlapping Peskin's Immersed Boundary kernels (blobs) which are held together by springs to build up a particle impenetrable core. Here, we used 12 blobs placed in the vertexes of an icosahedron with an extra one in its center. Although the particle surface is not explicitly resolved, we show that the short-distance hydrodynamic responses (flow profiles, translational and rotational mobilities, lubrication, etc) agree with spherical colloids and provide consistent effective radii. A remarkable property of the present multiblob model is that it naturally presents a "divergent" lubrication force at finite inter-particle distance. This permits to resolve the large viscosity increase at dense colloidal volume fractions. The intermediate resolution model is able to recover highly non-trivial (many-body) hydrodynamics using small particles whose radii are similar to the grid size $h$ (in the range $[1.6-3.2]\\,h$). Considering that the cost of the embedding fluid phase scales like the cube of the particle radius, this result brings about a significant computational speed-up. Our code Fluam works in Graphics Processor Units (GPU's) and uses Fast Fourier Transform for the Poisson solver, which further improves its efficiency.

  10. Practical Considerations of Moisture in Baled Biomass Feedstocks

    SciTech Connect (OSTI)

    William A. Smith; Ian J. Bonner; Kevin L. Kenney; Lynn M. Wendt

    2013-01-01T23:59:59.000Z

    Agricultural residues make up a large portion of the immediately available biomass feedstock for renewable energy markets. Current collection and storage methods rely on existing feed and forage practices designed to preserve nutrients and properties of digestibility. Low-cost collection and storage practices that preserve carbohydrates across a range of inbound moisture contents are needed to assure the economic and technical success of the emerging biomass industry. This study examines the movement of moisture in storage and identifies patterns of migration resulting from several on-farm storage systems and their impacts on moisture measurement and dry matter recovery. Baled corn stover and energy sorghum were stored outdoors in uncovered, tarp-covered, or wrapped stacks and sampled periodically to measure moisture and dry matter losses. Interpolation between discrete sampling locations in the stack improved bulk moisture content estimates and showed clear patterns of accumulation and re-deposition. Atmospheric exposure, orientation, and contact with barriers (i.e., soil, tarp, and wrap surfaces) were found to cause the greatest amount of moisture heterogeneity within stacks. Although the bulk moisture content of many stacks remained in the range suitable for aerobic stability, regions of high moisture were sufficient to support microbial activity, thus support dry matter loss. Stack configuration, orientation, and coverage methods are discussed relative to impact on moisture management and dry matter preservation. Additionally, sample collection and data analysis are discussed relative to assessment at the biorefinery as it pertains to stability in storage, queuing, and moisture carried into processing.

  11. A solution to the inherent list on Nimitz class aircraft carriers

    E-Print Network [OSTI]

    Wolfson, Dianna

    2004-01-01T23:59:59.000Z

    Nimitz class aircraft carriers possess an inherent list to starboard that their list control systems (LCS) are typically unable to correct while under Combat Load Conditions. As a result, it has become necessary to use ...

  12. Large inherent optical gain from the direct gap transition of Ge thin films

    E-Print Network [OSTI]

    Wang, Xiaoxin

    The recent demonstration of Ge-on-Si diode lasers renews the interest in the unique carrier dynamics of Ge involving both direct (?) and indirect (L) valleys. Here, we report a large inherent direct gap optical gain ...

  13. How do elevated [CO2], warming, and reduced precipitation interact to affect soil moisture and LAI in an old field ecosystem?

    SciTech Connect (OSTI)

    Dermody, Orla [University of Tennessee, Knoxville (UTK); Weltzin, Jake [University of Tennessee, Knoxville (UTK); Engel, Elizabeth C. [University of Tennessee, Knoxville (UTK); Allen, Phillip [University of Tennessee, Knoxville (UTK); Norby, Richard J [ORNL

    2007-01-01T23:59:59.000Z

    Soil moisture content and leaf area index (LAI) are properties that will be particularly important in mediating whole system responses to the combined effects of elevated atmospheric [CO2], warming and altered precipitation. Warming and drying will likely reduce soil moisture, and this effect may be exacerbated when these factors are combined. However, elevated [CO2] may increase soil moisture contents and when combined with warming and drying may partially compensate for their effects. The response of LAI to elevated [CO2] and warming will be closely tied to soil moisture status and may mitigate or exacerbate the effects of global change on soil moisture. Using open-top chambers (4-m diameter), the interactive effects of elevated [CO2], warming, and differential irrigation on soil moisture availability were examined in the OCCAM (Old-Field Community Climate and Atmospheric Manipulation) experiment at Oak Ridge National Laboratory in eastern Tennessee. Warming consistently reduced soil moisture contents and this effect was exacerbated by reduced irrigation. However, elevated [CO2] partially compensated for the effects of warming and drying on soil moisture. Changes in LAI were closely linked to soil moisture status. LAI was determined using an AccuPAR ceptometer and both the leaf area duration (LAD) and canopy size were increased by irrigation and elevated [CO2]. The climate of the southeastern United States is predicted to be warmer and drier in the future. This research suggests that although elevated [CO2] will partially ameliorate the effects of warming and drying, losses of soil moisture will increase from old field ecosystems in the future.

  14. Soil Moisture and the Drought in Texas Todd Caldwell

    E-Print Network [OSTI]

    Yang, Zong-Liang

    Neutron scatter 50 2 2010 AmeriFlux Dielectric 215 1 2005 NEON ?? 20 1 ~2011 West Texas Mesonet: 79 sitesSoil Moisture and the Drought in Texas Todd Caldwell Bridget Scanlon Michael Young Di Long Water;Soil Moisture and the Drought in Texas I. How is drought linked to water resources? II. Where does soil

  15. High-R Walls for Remodeling: Wall Cavity Moisture Monitoring

    SciTech Connect (OSTI)

    Wiehagen, J.; Kochkin, V.

    2012-12-01T23:59:59.000Z

    The focus of the study is on the performance of wall systems, and in particular, the moisture characteristics inside the wall cavity and in the wood sheathing. Furthermore, while this research will initially address new home construction, the goal is to address potential moisture issues in wall cavities of existing homes when insulation and air sealing improvements are made.

  16. Soil Moisture Measurement in Heterogeneous Terrain Merlin, O.1

    E-Print Network [OSTI]

    Walker, Jeff

    , uncertainty assessment, soil moisture patterns. EXTENDED ABSTRACT Reliable soil moisture measurement over such data, portable electronic sensors offer a practical alternative to gravimetric measurements % v/v in clay. On the other hand, the real component of the measured relative DC is found to be more

  17. Moisture Management for High R-Value Walls

    SciTech Connect (OSTI)

    Lepage, R.; Schumacher, C.; Lukachko, A.

    2013-11-01T23:59:59.000Z

    The following report explains the moisture-related concerns for High R-value wall assemblies and discusses past Building America research work that informs this study. Hygrothermal simulations were prepared for several common approaches to High R-value wall construction in six cities (Houston, Atlanta, Seattle, St. Louis, Chicago, and International Falls) representing a range of climate zones (2, 3, 4C, 4, 5A, and 7, respectively). The simulations are informed by experience gained from past research in this area and validated by field measurement and forensic experience. The modeling program was developed to assess the moisture durability of the wall assemblies based on three primary sources of moisture: construction moisture, air leakage condensation, and bulk water leakage. The peak annual moisture content of the wood based exterior sheathing was used to comparatively analyze the response to the moisture loads for each of the walls in each given city. Walls which experienced sheathing moisture contents between 20% and 28% were identified as risky, whereas those exceeding 28% were identified as very high risk. All of the wall assemblies perform well under idealized conditions. However, only the walls with exterior insulation, or cavity insulation which provides a hygrothermal function similar to exterior insulation, perform adequately when exposed to moisture loads. Walls with only cavity insulation are particularly susceptible to air leakage condensation. None of the walls performed well when a precipitation based bulk water leak was introduced to the backside of the sheathing, emphasizing the importance of proper flashing details.

  18. Measurements of moisture suction in hot mix asphalt mixes

    E-Print Network [OSTI]

    Kassem, Emad Abdel-Rahman

    2006-10-30T23:59:59.000Z

    The presence of moisture in hot mix asphalt (HMA) causes loss of strength and durability of the mix, which is referred to as moisture damage. This study deals with the development of experimental methods for measuring total suction in HMA, which can...

  19. Moisture Management of High-R Walls (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2013-12-01T23:59:59.000Z

    The following report explains the moisture-related concerns for High R-value wall assemblies and discusses past Building America research work that informs this study. Hygrothermal simulations were prepared for several common approaches to High R-value wall construction in six cities (Houston, Atlanta, Seattle, St. Louis, Chicago, and International Falls) representing a range of climate zones (2, 3, 4C, 4, 5A, and 7, respectively). The simulations are informed by experience gained from past research in this area and validated by field measurement and forensic experience. The modeling program was developed to assess the moisture durability of the wall assemblies based on three primary sources of moisture: construction moisture, air leakage condensation, and bulk water leakage. The peak annual moisture content of the wood based exterior sheathing was used to comparatively analyze the response to the moisture loads for each of the walls in each given city. Walls which experienced sheathing moisture contents between 20% and 28% were identified as risky, whereas those exceeding 28% were identified as very high risk. All of the wall assemblies perform well under idealized conditions. However, only the walls with exterior insulation, or cavity insulation which provides a hygrothermal function similar to exterior insulation, perform adequately when exposed to moisture loads. Walls with only cavity insulation are particularly susceptible to air leakage condensation. None of the walls performed well when a precipitation based bulk water leak was introduced to the backside of the sheathing, emphasizing the importance of proper flashing details.

  20. The moisture budget in relation to convection 

    E-Print Network [OSTI]

    Scott, Robert Wilson

    1976-01-01T23:59:59.000Z

    : x10-6g cm-2s-1) 30 (, 'j I" '~, ". :, ', :, ':: P, ' r 0 (a) 0600 GMT, 24 April 1975 . . . ~t' . '. a--'-, . ' ' P) D (b) 0600 GiXT, 25 April 1975 Analyses of the net vertacal boundary flux of moisture in the layer from 500-350 mb... 120 4 060 , J 16O I 2 1" , 090 ~ J 120 32+ r I 24~ 190 12 10 (b) 700 mb Fig. 3. Synoptic charts for 0600 GMT on 24 April 1975. 16 86. 16 04 08 I 12 I I f 08 I 08 I L 08 12 16 (a) Surface 20 - 8 A 4X 4 0 ) O2O ~~(~ -2 J--4...

  1. Evaluation of Consistent Logical Checkpointing

    E-Print Network [OSTI]

    Kaul, Surbhi

    1995-01-01T23:59:59.000Z

    is cliscussed in more cletail in the next chapter lvhich pr smlts tht val'iations of the consist( nt logical ?heckpointing scheme. Applicatiuu '('('Itl& L's(&r Cu Illnunication The next set of experime!its !s pet fol meri uitli aii application lvith a...

  2. Influence of Solar-ProbeInherent Atmosphereon In-Situ Observations

    E-Print Network [OSTI]

    Harilal, S. S.

    the intense solar heat. For perihelion distances of radius R = 4-10 solar radii, R, (the values proposedInfluence of Solar-ProbeInherent Atmosphereon In-Situ Observations A. Hassanein Argonne National or responsibility for the accuracy, completeness, or use- fulness of any information, apparatus, product, or process

  3. Development of a hierarchical fuzzy model for the evaluation of inherent safety

    E-Print Network [OSTI]

    Gentile, Michela

    2004-11-15T23:59:59.000Z

    system............................................... 60 4.4 Approach and ideological foundations for inherent safety measurement....................................................................... 63 4.4.1 Question to be answered... VI INTRODUCTION TO FUZZY SYSTEMS DESIGN......................... 107 6.1 Overview of fuzzy modeling....................................................... 107 6.1.1 Computing with words.................................................... 109 6...

  4. Moisture burst structure in satellite water vapor imagery

    E-Print Network [OSTI]

    Ulsh, David Joel

    1988-01-01T23:59:59.000Z

    The moisture burst is a tropical synoptic-scale weather event that typically originates along the ITCZ and has been defined previously in window-channel infrared imagery. This research uses 6. 7-micrometer water vapor absorption band imagery to composite 35... moisture burst events during the North Pacific cool season of 1983-1984. Composite maps are constructed at four times, each 24 h apart, during the life cycle of the moisture burst. A comparative baseline is provided by an additional composite of 35 dates...

  5. Consistently violating the non-Gaussian consistency relation

    E-Print Network [OSTI]

    Mooij, Sander; Romano, Antonio E

    2015-01-01T23:59:59.000Z

    Non-attractor models of inflation are characterized by the super-horizon evolution of curvature perturbations, introducing a violation of the non-Gaussian consistency relation between the bispectrum's squeezed limit and the power spectrum's spectral index. In this work we show that the bispectrum's squeezed limit of non-attractor models continues to respect a relation dictated by the evolution of the background. We show how to derive this relation using only symmetry arguments, without ever needing to solve the equations of motion for the perturbations.

  6. Evaluation of the Effective Moisture Penetration Depth Model for Estimating Moisture Buffering in Buildings

    SciTech Connect (OSTI)

    Woods, J.; Winkler, J.; Christensen, D.

    2013-01-01T23:59:59.000Z

    This study examines the effective moisture penetration depth (EMPD) model, and its suitability for building simulations. The EMPD model is a compromise between the simple, inaccurate effective capacitance approach and the complex, yet accurate, finite-difference approach. Two formulations of the EMPD model were examined, including the model used in the EnergyPlus building simulation software. An error in the EMPD model we uncovered was fixed with the release of EnergyPlus version 7.2, and the EMPD model in earlier versions of EnergyPlus should not be used.

  7. Soil temperature, soil moisture and thaw depth, Barrow, Alaska, Ver. 1

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Sloan, V.L.; J.A. Liebig; M.S. Hahn; J.B. Curtis; J.D. Brooks; A. Rogers; C.M. Iversen; R.J. Norby

    This dataset consists of field measurements of soil properties made during 2012 and 2013 in areas A-D of Intensive Site 1 at the Next-Generation Ecosystem Experiments (NGEE) Arctic site near Barrow, Alaska. Included are i) weekly measurements of thaw depth, soil moisture, presence and depth of standing water, and soil temperature made during the 2012 and 2013 growing seasons (June - September) and ii) half-hourly measurements of soil temperature logged continuously during the period June 2012 to September 2013.

  8. Thermal Effects of Moisture in Rigid Insulation Board

    E-Print Network [OSTI]

    Crow, G. W.

    The impact of moisture in rigid roof insulation upon energy consumption is often assumed to be a simple function of the conductance. This paper will show that there are complex interactions between conductance, thermal mass, and climate. The energy...

  9. Measurement of Moisture Content in Sand, Slag, and Crucible Materials

    SciTech Connect (OSTI)

    Gray, J.H.

    1999-09-20T23:59:59.000Z

    The deinventory process at Rocky Flats (RFETS) has included moisture content measurements of sand, slag, and crucible (SSC) materials by performing weight loss measurements at 210 degrees - 220 degrees Celsius on representative samples prior to packaging for shipment. Shipping requirements include knowledge of the moisture content. Work at the Savannah River Technology Center (SRTC) showed that the measurement at 210 degrees - 220 degrees Celsius did not account for all of the moisture. The objective of the work in this report was to determine if the measurement at 210 degrees - 220 degrees Celsius at RFETS could be used to set upper bounds on moisture content and therefore, eliminate the need for RFETS to unpack, reanalyze and repack the material.

  10. Building America Top Innovations Hall of Fame Profile ? Moisture...

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

    2. House-as-a-System Solutions 2.1 New Homes with Whole-House Packages Moisture and Ventilation Solutions in Hot, Humid Climates: Florida Manufactured Housing Research by Building...

  11. Moisture Risk in Unvented Attics Due to Air Leakage Paths

    SciTech Connect (OSTI)

    Prahl, D.; Shaffer, M.

    2014-11-01T23:59:59.000Z

    IBACOS completed an initial analysis of moisture damage potential in an unvented attic insulated with closed-cell spray polyurethane foam. To complete this analysis, the research team collected field data, used computational fluid dynamics to quantify the airflow rates through individual airflow (crack) paths, simulated hourly flow rates through the leakage paths with CONTAM software, correlated the CONTAM flow rates with indoor humidity ratios from Building Energy Optimization software, and used Warme und Feuchte instationar Pro two-dimensional modeling to determine the moisture content of the building materials surrounding the cracks. Given the number of simplifying assumptions and numerical models associated with this analysis, the results indicate that localized damage due to high moisture content of the roof sheathing is possible under very low airflow rates. Reducing the number of assumptions and approximations through field studies and laboratory experiments would be valuable to understand the real-world moisture damage potential in unvented attics.

  12. Thermal Effects of Moisture in Rigid Insulation Board 

    E-Print Network [OSTI]

    Crow, G. W.

    1992-01-01T23:59:59.000Z

    The impact of moisture in rigid roof insulation upon energy consumption is often assumed to be a simple function of the conductance. This paper will show that there are complex interactions between conductance, thermal mass, and climate. The energy...

  13. Moisture Diffusion in Asphalt Binders and Fine Aggregate Mixtures

    E-Print Network [OSTI]

    Vasconcelos, Kamilla L.

    2011-08-08T23:59:59.000Z

    cost in highway maintenance and vehicle operations. One key mechanism of how moisture reaches the asphalt-aggregate interface is by its permeation or diffusion through the asphalt binder or mastic. Different techniques are available for diffusion...

  14. Evaluation of Moisture Susceptibility of Warm Mix Asphalt

    E-Print Network [OSTI]

    Garcia Cucalon, Maria Lorena

    2013-05-03T23:59:59.000Z

    . To evaluate WMA moisture susceptibility during this critical period, standard laboratory tests were used for three field projects each with an HMA control mixtures and multiple WMA mixtures. Different specimen types were also evaluated to capture differences...

  15. The spatial and temporal organization of soil moisture 

    E-Print Network [OSTI]

    Vogel, Gregor Klaus

    1995-01-01T23:59:59.000Z

    THE SPATIAL AND TEMPORAL ORGANIZATION OF SOIL MOISTURE A Thesis by GREGOR KLAUS VOGEL Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE December... 1995 Major Subject: Water Resources Engineering THE SPATIAL AND TEMPORAL ORGANIZATION OF SOIL MOISTURE A Thesis by GREGOR KLAUS VOGEL Submitted to Texas ARM University in partial fulfillment of the requirements for the degree of MASTER...

  16. Evaluation of moisture damage within asphalt concrete mixes

    E-Print Network [OSTI]

    Shah, Brij D.

    2004-09-30T23:59:59.000Z

    with load cycles. The analysis demonstrates the need to consider mixture compliance as well as bond energy in order to predict moisture damage. Mixtures with the two types of bitumen and each aggregate with and without hydrated lime were... evaluated. The hydrated lime substantially improved the resistance of the mixture to moisture damage. iv To my parents. v ACKNOWLEDGMENTS I would like to extend my sincere thanks to everyone who helped...

  17. Variation in soil moisture and N availability modulates carbon and water exchange in a California grassland experiment

    SciTech Connect (OSTI)

    St. Clair, S.B.; Sudderth, E.; Fischer, M.L.; Torn, M.S.; Stuart, S.; Salve, R.; Eggett, D.; Ackerly, D.

    2009-03-15T23:59:59.000Z

    Variability in the magnitude and timing of precipitation is predicted to change under future climate scenarios. The primary objective of this study was to understand how variation in precipitation patterns consisting of soil moisture pulses mixed with intermittent dry down events influence ecosystem gas fluxes. We characterized the effects of precipitation amount and timing, N availability, and plant community composition on whole ecosystem and leaf gas exchange in a California annual grassland mesocosm study system that allowed precise control of soil moisture conditions. Ecosystem CO2 and fluxes increased significantly with greater precipitation and were positively correlated with soil moisture. A repeated 10 day dry down period following 11 days of variable precipitation inputs strongly depressed net ecosystem CO2 exchange (NEE) across a range of season precipitation totals, and plant community types. Ecosystem respiration (Re), evapotranspiration (ET) and leaf level photosynthesis (Amax) showed greatest sensitivity to dry down periods in low precipitation plots. Nitrogen additions significantly increased NEE, Re and Amax, particularly as water availability was increased. These results demonstrate that N availability and intermittent periods of soil moisture deficit (across a wide range of cumulative season precipitation totals) strongly modulate ecosystem gas exchange.

  18. Large CO2 reductions via offshore wind power matched to inherent storage in energy end-uses

    E-Print Network [OSTI]

    Jacobson, Mark

    Large CO2 reductions via offshore wind power matched to inherent storage in energy end-uses Willett develop methods for assessing offshore wind resources, using a model of the vertical structure offshore wind power matched to inherent storage in energy end- uses, Geophys. Res. Lett., 34, L02817, doi

  19. The Influence of Moisture and Temperature on Cotton Root Rot.

    E-Print Network [OSTI]

    Taubenhaus, J. J. (Jacob Joseph); Dana, B. F. (Bliss F.)

    1928-01-01T23:59:59.000Z

    . BAYLES, B. S., Superintendent J. PAUL LUSK, S. M., Plant Patholog Teachers in the School of Arnicultnre Carryine Coo~erative Projects on the Statit -- . G W ADRIANCE M S ~srociate~~rofessor of Horticulture S ' W 'BI~SING ~h D 'kro&sor of Entomology V... of the season. This initial moisture supply, together mith the additions during the growing season, permitted the continued development of root rot throughout the entire season. ,It the INFLUENCE OF MOISTURE AND TEMPERATURE ON COTTON ROOT ROT 9 end...

  20. Moisture Sensor for Sulfur Hexafluoride (SF6)-filled Circuit Breakers

    SciTech Connect (OSTI)

    Sauers, I.

    2001-04-27T23:59:59.000Z

    Measurements at ORNL were made on the Kahn moisture sensor which Doble Engineering wants to evaluate for use in SF{sub 6} circuit breakers. Test conducted at ORNL indicate that vacuum conditions, as might be found in SF{sub 6} circuit breakers prior to filling with SF{sub 6}, could lead to significant changes in calibration, resulting in erroneous readings of moisture content. Similar effects might also be observed in cases where SF{sub 6} byproducts are present, due the reactivity of some of these byproducts with water.

  1. System design description for surface moisture measurement system (SMMS)

    SciTech Connect (OSTI)

    Vargo, G.F.

    1996-09-23T23:59:59.000Z

    The SMMS has been developed to measure moisture in the top few centimeters of tank waste. The SMMS development was initiated by the preliminary findings of SAR-033, and does not necessarily fulfill any established DQO. After the SAR-033 is released, if no significant changes are made, moisture measurements in the organic waste tanks will rapidly become a DQO. The SMMS was designed to be installed in any 4 inch or larger riser, and to allow maximum adjustability for riser lengths, and is used to deploy a sensor package on the waste surface within a 6 foot radius about the azimuth. The first sensor package will be a neutron probe.

  2. Investigation of moisture content variations in highway subgrades and bases

    E-Print Network [OSTI]

    Jenkins, Edward Donald

    1957-01-01T23:59:59.000Z

    , temperature gradient, hydraulic gradient, and textural radient, Frost action is caused. by a freezing temperature which forms ice crystals and draws moisnure from the soil pores. This creates a hvdraulic gradient for tI e movement of moisture in the liq... and the remedies are fairly well-known and used. in highway construction. There are three conditions required for detrimental frost action to occur: (1) a frost susceptible soil; (2) a freezing temperature; and ($) a water source. The movement 10 of moisture...

  3. Remote monitoring of soil moisture using airborne microwave radiometers

    E-Print Network [OSTI]

    Kroll, Charles Lindsey

    1973-01-01T23:59:59.000Z

    REMOTE MONITORING OF SOIL MOISTURE USING AIRBORNE MICROWAVE RADIOMETERS A Thesis by CHARLES LINDSEY J(ROLL Submitted to the Graduate College of Texas A)M University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE... August 1973 Major Subject: Electrical Engineering REMOTE MONITORING OF SOIL MOISTURE USING AIRBORNE MICROWAVE RADIOMETERS A Thesis by CHARLES LINDSEY KROLL Approved as to style and content by: man o Co mrtt Hca o D artmc c Ill l c r Mem e Member...

  4. Stresses in adhesive joints due to moisture sorption 

    E-Print Network [OSTI]

    Jen, Ming-Hwa Robert

    1980-01-01T23:59:59.000Z

    for the Case of 2 Moisture Absorpt1on. . . . . . . . . . . . . . . . . . 53 The Non-Dimensional Peel Stress p and the Interlaminar Shear Stresses T and T vs. the Non-Dimensional D1stance x for the Case of Moi stfre Absorption . . . . . . . . . 54 The Non...-Dimensional Displacement W2 of the Outer-Adherends vs. the Non-Dimens1onal Distance x for the Case of Moisture Desorption . . . . . . . . . . . . . . . . . . 55 The Non-Dimensional Peel Stress p and the Interlaminar Shear Stresses T and T2 vs. the Non-D1mens1onal...

  5. Predicting farm machinery operation time with a soil moisture mode

    E-Print Network [OSTI]

    Bordovsky, James Paul

    1978-01-01T23:59:59.000Z

    -1972 . 76 Figure Page 24. Measured and computed plant available soil moisture in the top 30 cm of the soil profile on watershed Y-8 at Riesel, Texas during 1969, 1970, and 1972 79-81 25. Measured and computed plant available soil moisture in the top... for September, October, and November, 1977 97-99 32. Observed and calculated trafficability data at Corpus Christi, Texas for July, September, October, and November, 1977 . . 101-104 A-1 . The value of PM when S = O. l and S = 0. 25 and aM is the independ...

  6. Inherent safety advantages of carbide fuel systems and technical issues regarding natural convection in LMRs

    SciTech Connect (OSTI)

    Barthold, W.P. [Barthold and Associates, Inc., Albuquerque, NM (United States)

    1984-08-01T23:59:59.000Z

    The scope of work is to summarize inherent safety advantages that are unique to the use of a carbide based fuel system and to summarize the technical issues regarding natural convection flow in LMFBR cores. As discussed in this report, carbide fuel provides the designer with far greater flexibility than oxide fuel. Carbide fuel systems can be designed to eliminate major accident initiators. They turn quantitative advantages into a qualitative advantage. The author proposed to LANL a series of core design and component concepts that would greatly enhance the safety of carbide over oxide systems. This report cites a series of safety advantages which potentially exist for a carbide fuel system. Natural convection issues have not been given much attention in the past. Only during the last few years has this issue been addressed in some detail. Despite claims to the contrary by some of the LMR contractors, the author does not think that the natural convection phenomena is fully understood. Some of the approximations made in natural convection transient analyses have probably a greater impact on calculated transient temperatures than the effects under investigation. Only integral in-pile experimental data and single assembly out-of-pile detailed data are available for comparisons with analytical models and correlations. Especially for derated cores, the natural convection capability of a LMR should be far superior to that of a LWR. The author ranks the natural convection capability of the LMR as the most important inherent safety feature.

  7. Worldwide advanced nuclear power reactors with passive and inherent safety: What, why, how, and who

    SciTech Connect (OSTI)

    Forsberg, C.W.; Reich, W.J.

    1991-09-01T23:59:59.000Z

    The political controversy over nuclear power, the accidents at Three Mile Island (TMI) and Chernobyl, international competition, concerns about the carbon dioxide greenhouse effect and technical breakthroughs have resulted in a segment of the nuclear industry examining power reactor concepts with PRIME safety characteristics. PRIME is an acronym for Passive safety, Resilience, Inherent safety, Malevolence resistance, and Extended time after initiation of an accident for external help. The basic ideal of PRIME is to develop power reactors in which operator error, internal sabotage, or external assault do not cause a significant release of radioactivity to the environment. Several PRIME reactor concepts are being considered. In each case, an existing, proven power reactor technology is combined with radical innovations in selected plant components and in the safety philosophy. The Process Inherent Ultimate Safety (PIUS) reactor is a modified pressurized-water reactor, the Modular High Temperature Gas-Cooled Reactor (MHTGR) is a modified gas-cooled reactor, and the Advanced CANDU Project is a modified heavy-water reactor. In addition to the reactor concepts, there is parallel work on super containments. The objective is the development of a passive box'' that can contain radioactivity in the event of any type of accident. This report briefly examines: why a segment of the nuclear power community is taking this new direction, how it differs from earlier directions, and what technical options are being considered. A more detailed description of which countries and reactor vendors have undertaken activities follows. 41 refs.

  8. A study of improved MHR 50/100 toward a higher level of inherent safety

    SciTech Connect (OSTI)

    Minatsuki, I.; Otani, T.; Shimizu, K. [Mitsubishi Heavy Industries, Ltd., 16-5, Konan 2-Chome, Minato-ku, Tokyo (Japan); Oyama, S.; Tsukamoto, H. [Mitsubishi Heavy Industries, Ltd., 1-1 Wadasaki-cho 1-Chome, Hyogo-ku, Kobe (Japan); Kunitomi, K. [Japan Atomic Energy Agency, 4002 Narita, Oarai, Ibaraki (Japan)

    2012-07-01T23:59:59.000Z

    A new concept of the Mitsubishi small-sized High temperature gas-cooled modular Reactors (MHR-50/100) had been developed and published in papers. The study results of the first design concept show that the MHR-50/100 can achieve the inherent safety level set as a design target in case of water ingress during steam generator tube rupture accident. And more specifically, the reactor was shown to remain stable during long-term station black out (SBO) with protection of only passive devices during a depressurization accident and with additional motion of steam dump system during a water ingress accident. Recently greater requirements for safety of future nuclear plants including the MHR-50/100 have been expected. This study has thus made a key design improvement for the MHR-50/100 in order to secure the inherent safety aspect without reliance on active steam dump system in case of a water ingress accident. The innovative technologies listed below have been created and investigated to achieve the improved MHR-50/100 design; (1) Design improvement of steam generator, (2) Heat balance optimization of steam cycle, (3) Control system design of differential pressure between primary helium gas and water/steam, (4) Study on operation procedure during a water ingress accident. (authors)

  9. Relationships between inherent optical properties and the depth of penetration of solar radiation in optically complex coastal waters

    E-Print Network [OSTI]

    Strathclyde, University of

    Relationships between inherent optical properties and the depth of penetration of solar radiation optical properties and the depth of penetration of solar radiation in optically complex coastal waters, J

  10. The integration of Dow's Fire and Explosion Index into process design and optimization to achieve an inherently safer design

    E-Print Network [OSTI]

    Suardin, Jaffee Arizon

    2006-10-30T23:59:59.000Z

    and optimization framework is verified by applying it into reactor-distillation column system. The final result is the optimum economic and inherently safer design for the reactor and distillation column system....

  11. Derivation of Soil Moisture Retention Characteristics from Saturated Hydraulic Conductivity

    E-Print Network [OSTI]

    Kumar, C.P.

    systems require knowledge of the relationships between soil moisture content (), soil water pressure (h, and evapotranspiration. The soil factors include soil matric potential and water content relationship, saturated content of soil. The relation between matric potential and volumetric water content in a soil is termed

  12. SOIL MOISTURE CHARACTERISTICS IN UPPER PART OF HINDON RIVER CATCHMENT

    E-Print Network [OSTI]

    Kumar, C.P.

    of the contribution of various parts of a watershed to the ground water storage. Convenient and reliable techniques for the water demand of the vegetation, as well as for the recharge of the ground water storage. A fair into ground water aquifers. For analytical studies on soil moisture regime, critical review and accurate

  13. Integrating soil moisture and groundwater into climate models

    E-Print Network [OSTI]

    Krakauer, Nir Y.

    dNm dt =m Nm1- Nm -h Nh min1, Nm State transition to oscillatory solutions with efficient hunting: same initial and boundary conditions, but soil moisture set to seasonal climatology from DYNA experiments: Irrigation Simulate equilibrium climate with a mixed- layer ocean, year-2000 or 2050 (A1B

  14. POLICY FLASH 2015-31- Acquisition Letter No. AL 2015-06, Performance of Inherently Governmental and Critical Functions

    Broader source: Energy.gov [DOE]

    Attached is the final Acquisition Letter (AL) No. AL 2015-06, Performance of Inherently Governmental and Critical Functions, dated July 01, 2015. This AL provides guidance to DOE and NNSA HCAs and COs for implementing OFPP Policy Letter 11-01, Performance of Inherently Governmental and Critical Functions. The guidance included in this AL is intended to serve as interim guidance for DOE until such time as the Federal Acquisition Regulation (FAR) is amended to implement the Policy Letter in full detail.

  15. Preliminary non-destructive assessment of moisture content, hydration and dielectric properties of Portland cement concrete 

    E-Print Network [OSTI]

    Avelar Lezama, Ivan

    2007-04-25T23:59:59.000Z

    Moisture availability is a focal point in the structural development of young concrete. Under low humidity and hot weather conditions, concrete loses moisture rapidly as it hardens, and it is very difficult, if not impossible, ...

  16. Moisture degradation in FRP bonded concrete systems : an interface fracture approach

    E-Print Network [OSTI]

    Au, Ching, 1977-

    2005-01-01T23:59:59.000Z

    (cont.) characterization, and kink criterion implementation, form a synergistic analysis of the mechanistic debonding behavior affected by moisture. Results have shown that moisture affected debonding is a highly complex ...

  17. A Coupled Micromechanical Model of Moisture-Induced Damage in Asphalt Mixtures: Formulation and Applications 

    E-Print Network [OSTI]

    Caro Spinel, Silvia

    2011-02-22T23:59:59.000Z

    The deleterious effect of moisture on the structural integrity of asphalt mixtures has been recognized as one of the main causes of early deterioration of asphalt pavements. This phenomenon, usually referred to as moisture damage, is defined...

  18. DEVELOPMENT OF A RAPID TEST TO DETERMINE MOISTURE SENSTIVITY OF HMA (SUPERPAVE) MIXTURES

    E-Print Network [OSTI]

    Shiwakoti, Harihar

    2007-12-14T23:59:59.000Z

    Exiting test methods to determine moisture sensitivity in hot mix asphalt are time consuming and inconsistent. This research focused on wheel tracking devices to develop a rapid test method to evaluate moisture sensitivity. The Asphalt Pavement...

  19. SOLID WOOD PRODUCTS I TECHNICAL NOTE CALIBRATION OF MOISTURE METERS FOR

    E-Print Network [OSTI]

    tanks, and boats, the kiln and allowed to cool. They were content (MC) of wood. However, the cor and electrical resis- cypress have been supplied by moisture handled or conditioned. One moisture tance

  20. NASA's Soil Moisture Active Passive (SMAP) Mission and Opportunities for Applications Users

    E-Print Network [OSTI]

    Brown, Molly E.

    Water in the soil—both its amount (soil moisture) and its state (freeze/thaw)—plays a key role in water and energy cycles, in weather and climate, and in the carbon cycle. Additionally, soil moisture touches upon human ...

  1. The Soil Moisture Active and Passive Mission (SMAP): Science and Applications

    E-Print Network [OSTI]

    Entekhabi, Dara

    The soil moisture active and passive mission (SMAP) will provide global maps of soil moisture content and surface freeze/thaw state. Global measurements of these variables are critical for terrestrial water and carbon cycle ...

  2. Proposed and existing passive and inherent safety-related structures, systems, and components (building blocks) for advanced light-water reactors

    SciTech Connect (OSTI)

    Forsberg, C.W.; Moses, D.L.; Lewis, E.B.; Gibson, R.; Pearson, R.; Reich, W.J.; Murphy, G.A.; Staunton, R.H.; Kohn, W.E.

    1989-10-01T23:59:59.000Z

    A nuclear power plant is composed of many structures, systems, and components (SSCs). Examples include emergency core cooling systems, feedwater systems, and electrical systems. The design of a reactor consists of combining various SSCs (building blocks) into an integrated plant design. A new reactor design is the result of combining old SSCs in new ways or use of new SSCs. This report identifies, describes, and characterizes SSCs with passive and inherent features that can be used to assure safety in light-water reactors. Existing, proposed, and speculative technologies are described. The following approaches were used to identify the technologies: world technical literature searches, world patent searches, and discussions with universities, national laboratories and industrial vendors. 214 refs., 105 figs., 26 tabs.

  3. Evolution of moisture convergence in a mesoscale convective complex

    E-Print Network [OSTI]

    Bercherer, John Phillip

    1990-01-01T23:59:59.000Z

    Committee: Dr. Keuneth C. Brundidge Two separate Mesoscale Convective Complexes (MCCs) were investigated to determine if a characteristic surface moisture convergence (MC) signature existed on the mesoscale during their lifecycle. The first storm (Case 1... convergence, a bandpass filtering technique was utilized. It was found that MC could identify the general area of initial thunderstorm activity 2 h prior to its development for both cases. During the initial development stage of Case 1, advection...

  4. Hazards and operability study for the surface moisture monitoring system

    SciTech Connect (OSTI)

    Board, B.D.

    1996-04-04T23:59:59.000Z

    The Hanford Nuclear Reservation Tank Farms` underground waste tanks have been used to store liquid radioactive waste from defense materials production since the 1940`s. Waste in certain of the tanks may contain material in the form of ferrocyanide or various organic compounds which could potentially be susceptible to condensed phase chemical reactions. Because of the presence of oxidizing materials (nitrate compounds) and heat sources (radioactive decay and chemical reactions), the ferrocyanide or organic material could potentially fuel a propagating exothermic reaction with undesirable consequences. Analysis and experiments indicate that the reaction propagation and/or initiation may be prevented by the presence of sufficient moisture in the waste. Because the reaction would probably be initiated at the surface of the waste, evidence of sufficient moisture concentration would help provide evidence that the tank waste can continue to be safely stored. The Surface Moisture Measurement System (SMMS) was developed to collect data on the surface moisture in the waste by inserting two types of probes (singly) into a waste tank-a neutron probe and an electromagnetic inductance (EMI) probe. The sensor probes will be placed on the surface of the waste utilizing a moveable deployment arm to lower them through an available riser. The movement of the SMMS within the tank will be monitored by a camera lowered through an adjacent riser. The SMMS equipment is the subject of this study. Hazards and Operability Analysis (HAZOP) is a systematic technique for assessing potential hazards and/or operability problems for a new activity. It utilizes a multidiscipline team of knowledgeable individuals in a systematic brainstorming effort. The results of this study will be used as input to an Unreviewed Safety Question determination.

  5. [DELTA T dryer/moisture control system]. Final technical report

    SciTech Connect (OSTI)

    Not Available

    1995-01-01T23:59:59.000Z

    Drying Technology, Inc. was awarded a grant for the purpose of extending DELTA T dryer/moisture control technology into additional industries. Ultimate purpose of the grant was to save energy and improve efficiency in the process industries. Results indicate that these objectives have been met and will continue as this new technology is duplicated in the present industries and also is extended into other industries as well.

  6. The structure of a late-spring moisture burst

    E-Print Network [OSTI]

    Stockton, Jay Richard

    1986-01-01T23:59:59.000Z

    masses from tropical air masses. McGuirk et ol. (1983) developed a moisture burst climatology for the months of November through Apnl, utilizing Geostationary Operational Environmental Satelhte-West (GOES-W) IR imagery taken every six hours. Four... in the area. c) Point comparisons outside of the active burst regions show systematic overpredictions of mean relative humidity and underpredictions of temporal variability by ECMWF analyses with respect to observations. d) Satellite channel radiance data...

  7. CO2 CH4 flux Air temperature Soil temperature and Soil moisture, Barrow, Alaska 2013 ver. 1

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Margaret Torn

    This dataset consists of field measurements of CO2 and CH4 flux, as well as soil properties made during 2013 in Areas A-D of Intensive Site 1 at the Next-Generation Ecosystem Experiments (NGEE) Arctic site near Barrow, Alaska. Included are i) measurements of CO2 and CH4 flux made from June to September (ii) Calculation of corresponding Gross Primary Productivity (GPP) and CH4 exchange (transparent minus opaque) between atmosphere and the ecosystem (ii) Measurements of Los Gatos Research (LGR) chamber air temperature made from June to September (ii) measurements of surface layer depth, type of surface layer, soil temperature and soil moisture from June to September.

  8. Nondestructive NMR technique for moisture determination in radioactive materials.

    SciTech Connect (OSTI)

    Aumeier, S.; Gerald, R.E. II; Growney, E.; Nunez, L.; Kaminski, M.

    1998-12-04T23:59:59.000Z

    This progress report focuses on experimental and computational studies used to evaluate nuclear magnetic resonance (NMR) spectroscopy and magnetic resonance imaging (MRI) for detecting, quantifying, and monitoring hydrogen and other magnetically active nuclei ({sup 3}H, {sup 3}He, {sup 239}Pu, {sup 241}Pu) in Spent nuclear fuels and packaging materials. The detection of moisture by using a toroid cavity NMR imager has been demonstrated in SiO{sub 2} and UO{sub 2} systems. The total moisture was quantified by means of {sup 1}H NMR detection of H{sub 2}O with a sensitivity of 100 ppm. In addition, an MRI technique that was used to determine the moisture distribution also enabled investigators to discriminate between bulk and stationary water sorbed on the particles. This imaging feature is unavailable in any other nondestructive assay (NDA) technique. Following the initial success of this program, the NMR detector volume was scaled up from the original design by a factor of 2000. The capacity of this detector exceeds the size specified by DOE-STD-3013-96.

  9. Relation between local diffusivity and local inherent structures in the Kob-Andersen Lennard-Jones model

    E-Print Network [OSTI]

    Sciortino, Francesco

    , their energy of the local minima referred to as inherent struc- tures , eIS IS' stands for inherent structures­10 . For the case of the Kob-Andersen Lennard-Jones model 11,12 , the number eIS deIS of dis- tinct basins of energy depth between eIS and eIS+deIS follows a Gaussian distribution 5,6 eIS deIS = e Ne- eIS - Eo 2/2 2 2 2

  10. Enhancement of the inherent self-protection of the fast sodium reactor cores with oxide fuel

    SciTech Connect (OSTI)

    Eliseev, V.A.; Malisheva, I.V.; Matveev, V.I.; Egorov, A.V.; Maslov, P.A. [SSC RF - IPPE, Obninsk, Kaluga region (Russian Federation)

    2013-07-01T23:59:59.000Z

    With the development and research into the generation IV fast sodium reactors, great attention is paid to the enhancement of the core inherent self-protection characteristics. One of the problems dealt here is connected with the reduction of the reactivity margin so that the control rods running should not result in the core overheating and melting. In this paper we consider the possibilities of improving the core of BN-1200 with oxide fuel by a known method of introducing an axial fertile layer into the core. But unlike earlier studies this paper looks at the possibility of using such a layer not only for improving breeding, but also for reducing sodium void reactivity effect (SVRE). This proposed improvement of the BN-1200 core does not solve the problem of strong interference in control and protection system (CPS) rods of BN-1200, but they reduce significantly the reactivity margin for burn-up compensation. This helps compensate all the reactivity balances in the improved core configurations without violating constraints on SVRE value.

  11. Open upper plenum of LOF thermal hydraulics and inherent control rod insertion

    SciTech Connect (OSTI)

    Sienicki, J.J.

    1986-01-01T23:59:59.000Z

    In liquid-metal reactor (LMR) hypothetical transients for which normal scram is postulated not to occur, the thermal expansion of the control rod drivelines (CRDs) as they are washed by the hotter core effluent tends to insert the control assemblies (CAs) further into the core, thereby providing negative reactivity. A number of concepts to enhance the heatup-induced elongation of drivelines is being proposed involving both design features of the drivelines as well as flow control features of the drivelines and the upper internals structure (UIS). Reported here are the results of an analysis in which the COMMIX-1A computer code was used to investigate the three-dimensional thermal-hydraulic behavior in the upper plenum of a 425-MW(t) pool-type LMR during a loss-of-flow (LOF) transient and its influence on the driveline heatup and expansion. The calculations consider an open plenum geometry, which does not incorporate a UIS or CRD shroud tubes such that the drivelines are directly exposed to the multidimensional plenum flow. The objective of the present work is to define reference cases for inherent CRD insertion in which thermal-hydraulic features that might enhance the driveline heatup but, on the other hand, whose effects may be quantitatively sensitive to design details are completely absent.

  12. Evaluation of inherent distortions in the IIST facility using the RELAP5/MOD3 code

    SciTech Connect (OSTI)

    Ferng, Y.M. [Inst. of Nuclear Energy Research, Lung-Tan (Taiwan, Province of China)

    1996-06-01T23:59:59.000Z

    The Institute of Nuclear Energy Research (INER) integral system test (IIST) facility is a reduced-height, reduced-pressure test facility constructed at INER that is used to simulate the thermal hydraulics of the Maanshan nuclear power plant (NPP). A small-scaled facility is not capable of simulating all the physical phenomena of an NPP because the behavior of an NPP during accidents is very complicated. Proper scaling then plays an important role in the design of a test facility to ensure the usefulness and applicability of experimental data obtained from a small-scaled facility. However, distortions caused by necessary compromises in the design and construction of a small-scaled test facility exist. The analysis here evaluates whether the inherent distortions in the IIST facility will distort the thermal-hydraulic behaviors of a natural-circulation experiment and influence the usefulness and applicability of the experimental data. Based on the current calculations, the IIST experimental results are found to be partially distorted. Appropriate consideration of and correction for these distortion effects are needed before the results of the IIST natural-circulation experiments can be used to reliably investigate the Maanshan NPP behavior expected by way of an appropriate scale-up procedure.

  13. Coke gasification: the influence and behavior of inherent catalytic mineral matter

    SciTech Connect (OSTI)

    Mihaela Grigore; Richard Sakurovs; David French; Veena Sahajwalla [Commonwealth Scientific and Industrial Research Organisation (CSIRO), Bangor, NSW (Australia)

    2009-04-15T23:59:59.000Z

    Gasification of coke contributes to its degradation in the blast furnace. In this study, the effect of gasification on the inherent catalytic minerals in cokes and their reciprocal influence on gasification are investigated. The catalytic mineral phases identified in the cokes used in this study were metallic iron, iron sulfides, and iron oxides. Metallic iron and pyrrhotite were rapidly oxidized during gasification to iron oxide. The catalysts had a strong influence on the apparent rates at the initial stages of reaction. As gasification proceeds, their effect on the reaction rate diminishes as a result of reducing the surface contact between catalyst and carbon matrix because of carbon consumption around the catalyst particles; with extended burnout the reactivity of the coke becomes increasingly dependent on surface area. The reaction rate in the initial stages was also influenced by the particle size of the catalytic minerals; for a given catalytic iron level, the cokes whose catalytic minerals were more finely dispersed had a higher apparent reaction rate than cokes containing larger catalytic particles. Iron, sodium, and potassium in the amorphous phase did not appear to affect the reaction rate. 40 refs., 16 figs., 6 tabs.

  14. Static Consistency Checking for Distributed Specifications

    E-Print Network [OSTI]

    Finkelstein, Anthony

    Static Consistency Checking for Distributed Specifications Christian Nentwich, Wolfgang Emmerich, UK {c.nentwich,w.emmerich,a.finkelstein}@cs.ucl.ac.uk Abstract Software engineers building a complex

  15. 228 POWER FLOW ANALYSIS parties, it is crucial to recognize the inherently subjective nature of OPF. Power flow

    E-Print Network [OSTI]

    Kammen, Daniel M.

    228 POWER FLOW ANALYSIS parties, it is crucial to recognize the inherently subjective nature of OPF. Power flow analysis by itself basically answers a question of physics. By contrast, OPF answers criteria. In short, "optim- ality" does not arise from a power system's intrinsic technical properties

  16. 2 Large CO2 reductions via offshore wind power matched to inherent 3 storage in energy end-uses

    E-Print Network [OSTI]

    Firestone, Jeremy

    2 Large CO2 reductions via offshore wind power matched to inherent 3 storage in energy end-uses 4] We develop methods for assessing offshore wind 9 resources, using a model of the vertical structure. Dhanju, R. W. 26 Garvine, and M. Z. Jacobson (2007), Large CO2 reductions via 27 offshore wind power

  17. Using electrical resistance probes for moisture determination in switchgrass windrows

    SciTech Connect (OSTI)

    Chesser Jr., G. D.; Davis, J. D.; Purswell, J. L.; Lemus, R.

    2011-08-01T23:59:59.000Z

    Determining moisture levels in windrowed biomass is important for both forage producers and researchers. Energy crops such as switchgrass have been troublesome when using the standard methods set for electrical resistance meters. The objectives of this study were to i) develop the methodologies needed to measure MC in switchgrass using electrical resistance meters, ii) to determine the effects of pressure and probe orientation on MC measurement and iii) to generate MC calibration equations for electrical resistance meters using switchgrass in the senescence growth stage. Two meters (Meter 1, Farmex HT-PRO; Meter 2, Delmhorst F-2000) were selected based on commercial availability. A forage compression apparatus was designed and constructed with on-farm materials and methods to provide a simple system of applying pressure achievable by any forage producer or researcher in the field. Two trials were performed to test four levels of moisture contents (10, 20, 30, and 40%), five pressures (0, 1.68, 3.11, 4.55, 6.22 kN/m 2; 0, 35, 65, 95, 130 lb/ft 2), and two probe orientations (axial and transverse) in a 4x5x2 factorial design. Results indicated that meter accuracy increased as pressure increased. Regression models accounted for 91% and 81% of the variation for Meter 1 and Meter 2 at a pressure of 4.55 kN/m 2 (95 lb/ft 2) and a transverse probe orientation. Calibration equations were developed for both meters to improve moisture measurement accuracy for farmers and researchers in the field.

  18. A soil moisture availability model for crop stress prediction

    E-Print Network [OSTI]

    Gay, Roger Franklin

    1983-01-01T23:59:59.000Z

    wet so11 profile [Ritch1e et al. , 1972] . . . . . . . . . . . . . . 12 Relationships between the ratio of actual evaporation (Ea) to pan evaporat1on (E an) as a function of the available soil water in Rule and Bragg soybean [Burch et al. , 1978...] F1gure Interact1ons between soil-moisture status and other components of a general crop yield model . . . . . . . . . . . . . . . 16 Figure Root densit1es for ra1nfed Ruse and Bragg soybean, 98 days after planting [Burch et al. , 1978...

  19. Transient Analysis for Thermal and Moisture Behavior of Building Elements

    E-Print Network [OSTI]

    Guo, X.; Chen, Y.

    2006-01-01T23:59:59.000Z

    (,0)mx m= (10) 3.SOLVING METHOD Applying the Laplace transformation to Eqs.(3), (4), (5), (6), (7) and (8) with respect to t , they become 2 00 dTLSTTSm dx ??=?? + m (11) 2 00 dmDSmmST dx T? ?=?? + (12) 11 11 1 11 (,) [(,) ] (1... diffusivity approaches unity. So far, there have been many studies[3,8]concerned with the interactive effect between temperature and moisture, experimentally or analytically. However, for the convenience of analysis, most of the analytical investigations...

  20. Determination of moisture in solids using high frequency methods

    E-Print Network [OSTI]

    Burton, Melven Boyd

    1953-01-01T23:59:59.000Z

    ~, An induction-Ccpacit Oscillator of Unusual Fre uenc Stabi lit-, Proc ~ I. -". ". , larch, 1948 ~ (14) Glass':one, Samuel, Textbook of Physical Chemistry? D. Tan Nostrand Companv, Ino. , New York, 1947 pp 417 (15) Ibid, pp, 333 ... and low melting solids ~ . '. :eascrement of a change in a physical consL'ant ro deucrcc ne moisture content is incorporated in many methods' The chango in dielectric constant has been used with some success (0, 7 ' 8), 'cut s. "a' n it has boon more...

  1. Production of High Quality Dust Control Foam to Minimize Moisture Addition to Coal

    E-Print Network [OSTI]

    Termine, F.; Jordan, S. T.

    PRODUCTION OF HIGH QUALITY DUST CONTROL FOAM TO MINIMIZE MOISTURE ADDITION TO COAL Frank Tenni ne Steve T. Jordan BETZ Laboratories, Trevose, PA Inc. ABSTRACT Foam is displacing wet suppression as the method of choice for controlling... fugitive emissions from coal. Coal treated by wet suppression consumes through moisture addition, a heat energy equivalent of 1 ton out of every 500 tons fired. The application of foam requires less than 10% of the moisture usually required for wet...

  2. A study of the troxler nuclear soil density and moisture gauges

    E-Print Network [OSTI]

    Friedenwald, Robert Lane

    1963-01-01T23:59:59.000Z

    Be 60 source was used in moisture determinations and a Co source in density measurements. Average deviations of 0. 8 pounds of water per cubic foot of soil were reported for moisture measurements. Density measurements varied by 3 pounds per cubic... foot. It was found that moisture readings may be affected by chemically bound water but for mineral soils, soil type generally has little effect on the calibration of these instruments. Goldberg et al (15) in 1955 constructed a sensitive, r liable...

  3. Consistent nonlinear dynamics: identifying model inadequacy

    E-Print Network [OSTI]

    Patrick E. McSharry; Leonard A. Smith

    2004-03-09T23:59:59.000Z

    Empirical modelling often aims for the simplest model consistent with the data. A new technique is presented which quantifies the consistency of the model dynamics as a function of location in state space. As is well-known, traditional statistics of nonlinear models like root-mean-square (RMS) forecast error can prove misleading. Testing consistency is shown to overcome some of the deficiencies of RMS error, both within the perfect model scenario and when applied to data from several physical systems using previously published models. In particular, testing for consistent nonlinear dynamics provides insight towards (i) identifying when a delay reconstruction fails to be an embedding, (ii) allowing state dependent model selection and (iii) optimising local neighbourhood size. It also provides a more relevant (state dependent) threshold for identifying false nearest neighbours.

  4. BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders in the common goal of

    E-Print Network [OSTI]

    Rajakaruna, Nishanta

    BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders

  5. Advanced MR moisture sensor market feasibility analysis. Executive summary

    SciTech Connect (OSTI)

    NONE

    1995-02-01T23:59:59.000Z

    This paper briefly documents activities, background information, and results of marketing studies on the Magnetic Resonance Advanced Moisture Sensor (AMS). The main goals of the study are to identify industrial uses to guide development efforts, to become familiar with the industrial and magnetic resonance research capabilities/resources at the Southwest Research Institute (SwRI), and to develop a summary data sheet describing the AMS product for use with a broad mail survey of potential users. The studies are being performed through an alliance of Quantum Magnetics, US DOE, SwRI, The Townsend Agency, and PAI Partners. Efforts are being focused on NIR, Raman, and other optical spectroscopies as process measurement tools for onstream applications. Domestic and world markets for process analytical instrumentation, process moisture instrumentation, and nuclear magnetic resonance instrumentation are summarized. Three applications are identified as the most promising for magnetic resonance instrumentation: (1) polymer production, (2) pharmaceuticals preparation, and (3) prepared food processing. It is estimated that the process magnetic resonance market could reach $5 to $10 million annually by the end of this decade.

  6. Temperature and moisture dependence of dielectric constant for silica aerogels

    SciTech Connect (OSTI)

    Hrubesh, L.H., LLNL

    1997-03-01T23:59:59.000Z

    The dielectric constants of silica aerogels are among the lowest measured for any solid material. The silica aerogels also exhibit low thermal expansion and are thermally stable to temperatures exceeding 500{degrees}C. However, due to the open porosity and large surface areas for aerogels, their dielectric constants are strongly affected by moisture and temperature. This paper presents data for the dielectric constants of silica aerogels as a function of moisture content at 25{degrees}C, and as a function of temperature, for temperatures in the range from 25{degrees}C to 450{degrees}C. Dielectric constant data are also given for silica aerogels that are heat treated in dry nitrogen at 500{degrees}C, then cooled to 25{degrees}C for measurements in dry air. All measurements are made on bulk aerogel spheres at 22GHz microwave frequency, using a cavity perturbation method. The results of the dependence found here for bulk materials can be inferred to apply also to thin films of silica aerogels having similar nano-structures and densities.

  7. Doubly self-consistent field theory of grafted polymers under simple shear in steady state

    SciTech Connect (OSTI)

    Suo, Tongchuan; Whitmore, Mark D., E-mail: mark-whitmore@umanitoba.ca [Department of Physics and Astronomy, University of Manitoba, Winnipeg, Manitoba R3T 2N2 (Canada)

    2014-03-21T23:59:59.000Z

    We present a generalization of the numerical self-consistent mean-field theory of polymers to the case of grafted polymers under simple shear. The general theoretical framework is presented, and then applied to three different chain models: rods, Gaussian chains, and finitely extensible nonlinear elastic (FENE) chains. The approach is self-consistent at two levels. First, for any flow field, the polymer density profile and effective potential are calculated self-consistently in a manner similar to the usual self-consistent field theory of polymers, except that the calculation is inherently two-dimensional even for a laterally homogeneous system. Second, through the use of a modified Brinkman equation, the flow field and the polymer profile are made self-consistent with respect to each other. For all chain models, we find that reasonable levels of shear cause the chains to tilt, but it has very little effect on the overall thickness of the polymer layer, causing a small decrease for rods, and an increase of no more than a few percent for the Gaussian and FENE chains. Using the FENE model, we also probe the individual bond lengths, bond correlations, and bond angles along the chains, the effects of the shear on them, and the solvent and bonded stress profiles. We find that the approximations needed within the theory for the Brinkman equation affect the bonded stress, but none of the other quantities.

  8. Peel and Shear Fracture Characterization of Debonding in FRP Plated Concrete Affected by Moisture

    E-Print Network [OSTI]

    Entekhabi, Dara

    polymer CFRP plated concrete systems by mechanically testing accelerated moisture conditioned mesoscalePeel and Shear Fracture Characterization of Debonding in FRP Plated Concrete Affected by Moisture fracture toughness as the quantification parameter of the CFRP-epoxy-concrete trilayer system, which

  9. Monitoring Soil Moisture and Drought Using a Thermal TwoSource Energy Balance Model

    E-Print Network [OSTI]

    Kuligowski, Bob

    Monitoring Soil Moisture and Drought Using a Thermal TwoSource Energy Balance Model Christopher. In general, dry soil or stressed vegetation heats up more rapidly than wet soil or unstressed vegetation, using one dual polarized channel (either Cband or Xband) for the retrieval of soil moisture

  10. Using moisture transport properties of rice seed components for identifying fissure resistance

    E-Print Network [OSTI]

    Thomas, Audrey Elizabeth

    2002-01-01T23:59:59.000Z

    , LaGrue, Lemont, and Cypress. Equilibrium moisture content (EMC) tests exposed 200 grams of brown rice to identify how the four varieties compare in their ability to hold moisture at a specific condition. Cypress, Lemont, and LaGrue tended to hold...

  11. SOIL MOISTURE RETENTION CHARACTERISTICS AT RD 838 OF I. G. N. P. STAGE -II

    E-Print Network [OSTI]

    Kumar, C.P.

    aquifers. For analytical studies on soil moisture regime, critical review and accurate assessment among soil moisture characteristic curves are attributed primarily to the differences in pore size structures. In addition, the curves generally show hysteresis according to the wetting or drying of soils

  12. NEC Hazardous classification and compliance regarding the surface moisture monitor measurement system

    SciTech Connect (OSTI)

    Bussell, J.H., WHC

    1996-06-12T23:59:59.000Z

    The National Electrical Code, NFPA 70, and National Fire Protection Association requirements for use of Surface Moisture Monitor Systems in classified locations are discussed. The design and configuration of the surface moisture monitor are analyzed with respect to how they comply with requirements of the National Electrical Code requirements, articles 500-504.

  13. SOIL MOISTURE CHARACTERIZATION USING MULTI-ANGULAR POLARIMETRIC RADARSAT-2 DATASETS

    E-Print Network [OSTI]

    Boyer, Edmond

    SOIL MOISTURE CHARACTERIZATION USING MULTI-ANGULAR POLARIMETRIC RADARSAT-2 DATASETS Hongquan Wang to be a solution to improve the effectiveness of bare soil char- acterization. However, the potential single and multiple incidence angle acquisitions is investigated against in situ soil moisture

  14. Dynamic Effects on Moisture Transport in Asphalt Concrete M. Emin Kutay1

    E-Print Network [OSTI]

    Aydilek, Ahmet

    Dynamic Effects on Moisture Transport in Asphalt Concrete M. Emin Kutay1 and Ahmet H. Aydilek2 2007 133:7 406 CE Database subject headings: Moisture; Asphalt concrete; Dynamics; Hydraulic and Magdalena 2002 ; however, limited research has been conducted in modeling dynamic flow in porous geomedia

  15. Importance of moisture transport, snow cover and soil freezing to ground temperature predictions

    E-Print Network [OSTI]

    Importance of moisture transport, snow cover and soil freezing to ground temperature predictions moisture transport, snow accumulation and melting, and soil freezing and thawing are investigated transport, snow cover, and soil freezing. 1. Introduction Prediction of ground temperature is an important

  16. Optimization of stomatal conductance for maximum carbon gain under dynamic soil moisture

    E-Print Network [OSTI]

    Katul, Gabriel

    Optimization of stomatal conductance for maximum carbon gain under dynamic soil moisture Stefano Accepted 26 September 2013 Available online 9 October 2013 Keywords: Optimization Photosynthesis Soil moisture Stomatal conductance Transpiration a b s t r a c t Optimization theories explain a variety

  17. Normality: A Consistency Condition for Concurrent Objects

    E-Print Network [OSTI]

    Garg, Vijay

    Normality: A Consistency Condition for Concurrent Objects Vijay K. GARG \\Lambda Michel RAYNAL ECE for concurrent objects (objects shared by con­ current processes) that exploits the semantics of abstract data types. It provides the illusion that each operation applied by concurrent processes takes effect

  18. A Generalization of Generalized Arc Consistency

    E-Print Network [OSTI]

    Mackworth, Alan K.

    - binary classic constraint satisfaction problems (CSPs). Based on the Semiring CSP and Valued CSP such as fuzzy CSP, probabilistic CSP, max CSP, and weighted CSP. This extension is based on an idempotent satisfaction problem (CSP), local consistency can be char- acterized as deriving new constraints based on local

  19. Method and apparatus for fuel gas moisturization and heating

    DOE Patents [OSTI]

    Ranasinghe, Jatila (Niskayuna, NY); Smith, Raub Warfield (Ballston Lake, NY)

    2002-01-01T23:59:59.000Z

    Fuel gas is saturated with water heated with a heat recovery steam generator heat source. The heat source is preferably a water heating section downstream of the lower pressure evaporator to provide better temperature matching between the hot and cold heat exchange streams in that portion of the heat recovery steam generator. The increased gas mass flow due to the addition of moisture results in increased power output from the gas and steam turbines. Fuel gas saturation is followed by superheating the fuel, preferably with bottom cycle heat sources, resulting in a larger thermal efficiency gain compared to current fuel heating methods. There is a gain in power output compared to no fuel heating, even when heating the fuel to above the LP steam temperature.

  20. Moisture corrections in neutron coincidence counting of PuO/sub 2/

    SciTech Connect (OSTI)

    Stewart, J.E.; Menlove, H.O.

    1987-01-01T23:59:59.000Z

    Passive neutron coincidence counting is capable of 1% assay accuracy for pure, well-characterized PuO/sub 2/ samples that contain plutonium masses from a few tens of grams to several kilograms. Moisture in the sample can significantly bias the assay high by changing the (..cap alpha..,n) neutron production, the sample multiplication, and the detection efficiency. Monte Carlo calculations and an analytical model of coincidence counting have been used to quantify the individual and cumulative effects of moisture biases for two PuO/sub 2/ sample sizes and a range of moisture levels from 0 to 9 wt %. Results of the calculations suggest a simple correction procedure for moisture bias that is effective from 0 to 3 wt % H/sub 2/O. The procedure requires that the moisture level in the sample be known before the coincidence measurement.

  1. Dynamic Analysis of Moisture Transport Through Walls and Associated Cooling Loads in the Hot/Humid Climate of Florianopolis, Brazil 

    E-Print Network [OSTI]

    Mendes, N.; Winkelmann, F. C.; Lamberts, R.; Philippi, P. C.; Da Cunha, Neto, J. A. B.

    1996-01-01T23:59:59.000Z

    . The simulation results were compared to those obtained by pure conduction heat transfer without moisture effects. Also analyzed were the influence on cooling loads of high moisture content due to rain soaking of materials. and the influence of solar radiation...

  2. Consistence beats causality in recommender systems

    E-Print Network [OSTI]

    Zhu, Xuzhen; Hu, Zheng; Zhang, Ping; Zhou, Tao

    2015-01-01T23:59:59.000Z

    The explosive growth of information challenges people's capability in finding out items fitting to their own interests. Recommender systems provide an efficient solution by automatically push possibly relevant items to users according to their past preferences. Recommendation algorithms usually embody the causality from what having been collected to what should be recommended. In this article, we argue that in many cases, a user's interests are stable, and thus the previous and future preferences are highly consistent. The temporal order of collections then does not necessarily imply a causality relationship. We further propose a consistence-based algorithm that outperforms the state-of-the-art recommendation algorithms in disparate real data sets, including \\textit{Netflix}, \\textit{MovieLens}, \\textit{Amazon} and \\textit{Rate Your Music}.

  3. Soil moisture in complex terrain: quantifying effects on atmospheric boundary layer flow and providing improved surface boundary conditions for mesoscale models

    E-Print Network [OSTI]

    Daniels, Megan Hanako

    2010-01-01T23:59:59.000Z

    74 ii Soil Moisture Sensors: Decagon ECH2O Capacitance133 A.10 Soil types corresponding to each75 Soil Moisture and Temperature Probe

  4. Caribbean and Pacific moisture sources on the Isthmus of Panama revealed from stalagmite and surface water d18

    E-Print Network [OSTI]

    Asmerom, Yemane

    Caribbean and Pacific moisture sources on the Isthmus of Panama revealed from stalagmite values from Panama and Costa Rica. The d18 O values decrease with distance from the Caribbean Sea a contribution of both Caribbean and Pacific sourced moisture to the isthmus. We estimated the Pacific moisture

  5. Recent Advances in Profile Soil Moisture Retrieval Jeffrey P. Walker, Garry R. Willgoose and Jetse D. Kalma

    E-Print Network [OSTI]

    Walker, Jeff

    and agriculture. The significance of soil moisture is its role in the partitioning of energy at the ground surface for hydrologic, climatic and agricultural studies, such observations of surface soil moisture must be related to accept remote sensing data as input to track soil moisture status in time. As surface observations

  6. Self-consistent Gravitational Lens Reconstruction

    E-Print Network [OSTI]

    S. Dye; A. Taylor

    1998-08-13T23:59:59.000Z

    We present a new method for directly determining accurate, self-consistent cluster lens mass and shear maps in the strong lensing regime from the magnification bias of background galaxies. The method relies upon pixellisation of the surface mass density distribution which allows us to write down a simple, solvable set of equations. We also show how pixellisation can be applied to methods of mass determination from measurements of shear and present a simplified method of application. The method is demonstrated with cluster models and applied to magnification data from the lensing cluster Abell 1689.

  7. Self-consistent resonance in a plasma

    E-Print Network [OSTI]

    Evangelos Chaliasos

    2005-10-14T23:59:59.000Z

    As an application of the solution of the equations of electromagnetic self-consistency in a plasma, found in a previous paper, the study of controlled thermo-nuclear fusion is undertaken. This study utilizes the resonance which can be developed in the plasma, as indicated by the above solution, and is based to an analysis of the underlying forced oscillation under friction. As a consequence, we find that, in this way, controlled thermonuclear fusion seems now to be feasible in principle. The treatment is rather elementary, and it may serve as a guide for more detailed calculations.

  8. Consistency relations for the conformal mechanism

    SciTech Connect (OSTI)

    Creminelli, Paolo [Abdus Salam International Centre for Theoretical Physics, Strada Costiera 11, 34151, Trieste (Italy); Joyce, Austin; Khoury, Justin [Center for Particle Cosmology, Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA 19104 (United States); Simonovi?, Marko, E-mail: creminel@ictp.it, E-mail: joyceau@sas.upenn.edu, E-mail: jkhoury@sas.upenn.edu, E-mail: marko.simonovic@sissa.it [SISSA, via Bonomea 265, 34136, Trieste (Italy)

    2013-04-01T23:59:59.000Z

    We systematically derive the consistency relations associated to the non-linearly realized symmetries of theories with spontaneously broken conformal symmetry but with a linearly-realized de Sitter subalgebra. These identities relate (N+1)-point correlation functions with a soft external Goldstone to N-point functions. These relations have direct implications for the recently proposed conformal mechanism for generating density perturbations in the early universe. We study the observational consequences, in particular a novel one-loop contribution to the four-point function, relevant for the stochastic scale-dependent bias and CMB ?-distortion.

  9. Development of the prototype Munitions Case Moisture Meter, Model ORNL-1. Final report

    SciTech Connect (OSTI)

    Agouridis, D.C.; Gayle, T.M.; Griest, W.H.

    1993-02-24T23:59:59.000Z

    There is a great need for a rapid and simple means of determining the moisture content in combustible cartridge case (ccc) munitions. Previous studies have demonstrated that accumulation of moisture in ccc rounds, such as the M829, leads to softening of the case wall and weakening of the adhesive joint. Moisture in the ccc can lead to incomplete combustion of the case upon firing the round. Currently, there are no facile methods for measuring the moisture content. A prototype portable meter for non-destructive and rapid estimation of moisture in ccc has been developed. The Munitions Case Moisture Meter Model ORNL-1 demonstrates the feasibility of developing an instrument based on the moisture dependence of dielectric properties, to measure moisture in ccc munitions in storage and in the field. These instruments are simple, inexpensive, lightweight, portable, low-power battery operated, and intrinsically safe. They provide nondestructive, noninvasive, and rapid measurements. Calibration data for the prototype are not available at this time. Therefore, calibration of the meter and the development of a scale reading directly moisture content in munitions rounds could not be completed. These data will be supplied by the US Army from its tests of the meter with actual munitions. However, experimental results on empty cccs in laboratory conditions demonstrate satisfactory performance of the instrument. Additional work is needed to bring the prototype to its optimum usefulness and accuracy for field measurements. This includes: Calibration of the meter scale with full-up munitions; Data and evaluation procedures to adjust the performance of the meter for different environmental conditions such as temperature and humidity; and Studies of the dielectric properties of moist ccc materials, as a function of frequency and temperature, are needed for adjustment of the meter for optimal performance.

  10. Development of the prototype Munitions Case Moisture Meter, Model ORNL-1

    SciTech Connect (OSTI)

    Agouridis, D.C.; Gayle, T.M.; Griest, W.H.

    1993-02-24T23:59:59.000Z

    There is a great need for a rapid and simple means of determining the moisture content in combustible cartridge case (ccc) munitions. Previous studies have demonstrated that accumulation of moisture in ccc rounds, such as the M829, leads to softening of the case wall and weakening of the adhesive joint. Moisture in the ccc can lead to incomplete combustion of the case upon firing the round. Currently, there are no facile methods for measuring the moisture content. A prototype portable meter for non-destructive and rapid estimation of moisture in ccc has been developed. The Munitions Case Moisture Meter Model ORNL-1 demonstrates the feasibility of developing an instrument based on the moisture dependence of dielectric properties, to measure moisture in ccc munitions in storage and in the field. These instruments are simple, inexpensive, lightweight, portable, low-power battery operated, and intrinsically safe. They provide nondestructive, noninvasive, and rapid measurements. Calibration data for the prototype are not available at this time. Therefore, calibration of the meter and the development of a scale reading directly moisture content in munitions rounds could not be completed. These data will be supplied by the US Army from its tests of the meter with actual munitions. However, experimental results on empty cccs in laboratory conditions demonstrate satisfactory performance of the instrument. Additional work is needed to bring the prototype to its optimum usefulness and accuracy for field measurements. This includes: Calibration of the meter scale with full-up munitions; Data and evaluation procedures to adjust the performance of the meter for different environmental conditions such as temperature and humidity; and Studies of the dielectric properties of moist ccc materials, as a function of frequency and temperature, are needed for adjustment of the meter for optimal performance.

  11. The consistency test on the cosmic evolution

    E-Print Network [OSTI]

    Gong, Yan; Zhang, Shuang-Nan; Chen, Xuelei

    2015-01-01T23:59:59.000Z

    We propose a new and robust method to test the consistency of the cosmic evolution given by a cosmological model. It is realized by comparing the combined quantity r_d^CMB/D_V^SN, which is derived from the comoving sound horizon r_d from cosmic microwave background (CMB) measurements and the effective distance D_V derived from low-redshift Type-Ia supernovae (SNe Ia) data, with direct and independent r_d/D_V obtained by baryon acoustic oscillation (BAO) measurements at median redshifts. We apply this test method for the LCDM and wCDM models, and investigate the consistency of the derived value of r_d/D_V from Planck 2015 and the SN Ia data sets of Union2.1 and JLA (z<1.5), and the r_d/D_V directly given by BAO data from six-degree-field galaxy survey (6dFGS), Sloan Digital Sky Survey Data Release 7 Main Galaxy Survey (SDSS-DR7 MGS), DR11 of SDSS-III, WiggleZ and Ly-alpha forecast surveys from Baryon Oscillation Spectroscopic Data (BOSS) DR-11 over 0.1

  12. Moisture in Molasses as a Factor in the Heating of Feeds.

    E-Print Network [OSTI]

    Halick, John V.; Richardson, L. R.

    1952-01-01T23:59:59.000Z

    sugars after inversion, moisture, Brix and ash. Moist.ure was determined by the vacuum oven drying method and ranged from 19 to over 31 percent. Over 71.0 percent of the samples contained 26 percent or more of lwater. If 10 percent of molasses... in a feed contain a normal amount of water, the extra water added in the molasses might raise the moisture content to an unsafe level. Different values for solids were obtained by the Brix and the vacuum oven drying methods, Brix is an unreliable...

  13. Measurements of Backsheet Moisture Permeation and Encapsulant-Substrate Adhesion: Preprint

    SciTech Connect (OSTI)

    Jorgensen, G.; Terwilliger, K.; Barber, G.; Kennedy, C.; McMahon, T.

    2001-10-01T23:59:59.000Z

    Presented at the 2001 NCPV Program Review Meeting: Measurements of backsheet moisture permeation and encapsulant-substrate adhesion. At the March 2001 NCPV workshop on ''Moisture Ingress and High-Voltage Isolation'', industry participants identified several properties associated with PV module durability that are critical for commercial success. These include interface conductivity, adhesion of encapsulants to substrate materials as a function of in-service exposure conditions, and moisture permeation through backsheet materials as a function of temperature. Electrical data is discussed in a companion paper; adhesion and water vapor transmission rate (WVTR) measurements are presented herein.

  14. Experimental Study of Multi-type Macromolecule Porosity Moisture-Conditioned Material

    E-Print Network [OSTI]

    Huang, X.; Fan, Y.; Di, Y.

    2006-01-01T23:59:59.000Z

    MATERIALS AND EXPERIMENTAL DEVICES 4.1 The Experimental Materials (1) Porous materials: Concrete blocks, weight for 550Kg/m3, pore rate of 73%, saturated humidity rate of 45%, dimensions of 300?600?80mm. (2) Combined with the moisture conditioned... on buildings or wallpaper to adjust humidity. 2) Concrete blocks: 300?600?80mm. (3) Combined with the moisture conditioned plate and porous materials 1) Moisture conditioned plate: Absorbent resin adsorption salt solution, forms a Gel, mixed the Gel...

  15. Reliability and Consistency of Surface Contamination Measurements

    SciTech Connect (OSTI)

    Rouppert, F.; Rivoallan, A.; Largeron, C.

    2002-02-26T23:59:59.000Z

    Surface contamination evaluation is a tough problem since it is difficult to isolate the radiations emitted by the surface, especially in a highly irradiating atmosphere. In that case the only possibility is to evaluate smearable (removeable) contamination since ex-situ countings are possible. Unfortunately, according to our experience at CEA, these values are not consistent and thus non relevant. In this study, we show, using in-situ Fourier Transform Infra Red spectrometry on contaminated metal samples, that fixed contamination seems to be chemisorbed and removeable contamination seems to be physisorbed. The distribution between fixed and removeable contamination appears to be variable. Chemical equilibria and reversible ion exchange mechanisms are involved and are closely linked to environmental conditions such as humidity and temperature. Measurements of smearable contamination only give an indication of the state of these equilibria between fixed and removeable contamination at the time and in the environmental conditions the measurements were made.

  16. Self-consistent bounces in two dimensions

    SciTech Connect (OSTI)

    Baacke, Juergen; Kevlishvili, Nina [Institut fuer Physik, Universitaet Dortmund, D-44221 Dortmund (Germany)

    2005-01-15T23:59:59.000Z

    We compute bounce solutions describing false vacuum decay in a {phi}{sup 4} model in two dimensions in the Hartree approximation, thus going beyond the usual one-loop corrections to the decay rate. We use zero energy mode functions of the fluctuation operator for the numerical computation of the functional determinant and the Green's function. We thus avoid the necessity of discretizing the spectrum, as it is necessary when one uses numerical techniques based on eigenfunctions. Regularization is performed in analogy of standard perturbation theory; the renormalization of the Hartree approximation is based on the two-particle point-irreducible scheme. The iteration towards the self-consistent solution is found to converge for some range of the parameters. Within this range we find the corrections to the leading one-loop approximation to be relatively small, not exceeding 1 order of magnitude in the total transition rate.

  17. BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders in the common goal of

    E-Print Network [OSTI]

    Rajakaruna, Nishanta

    BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders. BioOne provides a sustainable online platform for over 170 journals and books published by nonprofit

  18. BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders in the common goal of

    E-Print Network [OSTI]

    Watkins, Joseph C.

    BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research fundersOne provides a sustainable online platform for over 170 journals and books published by nonprofit societies

  19. Compaction Effects on Uniformity, Moisture Diffusion, and Mechanical Properties of Asphalt Pavements

    E-Print Network [OSTI]

    Kassem, Emad Abdel-Rahman Ahmed

    2011-08-08T23:59:59.000Z

    in gyratory specimens were related to the mixture mechanical properties measured using the Overlay and Hamburg tests. The second part of this study focused on studying the relationship between air void distribution and moisture diffusion. A laboratory test...

  20. TEMPERATURE AND MOISTURE EFFECTS ON COMPOSITE MATERIALS FOR WIND TURBINE BLADES

    E-Print Network [OSTI]

    TEMPERATURE AND MOISTURE EFFECTS ON COMPOSITE MATERIALS FOR WIND TURBINE BLADES by Mei Li A thesis graduate students in the composite materials group for their help and kindness. Finally, thanks to my dear

  1. Investigation of Conditions for Moisture Damage in Asphalt Concrete and Appropriate Laboratory Test Methods

    E-Print Network [OSTI]

    Lu, Qing

    2005-01-01T23:59:59.000Z

    of Asphalt Concrete-Physical Testing. ” Final Report, #930-of Asphalt Concrete: Chemical Testing. ” Alabama Highwayconcrete mixes, it is preferred to use a mix that would have good moisture resistance under laboratory testing

  2. Investigation of Conditions for Moisture Damage in Asphalt Concrete and Appropriate Laboratory Test Methods

    E-Print Network [OSTI]

    Harvey, John T; Lu, Qing

    2005-01-01T23:59:59.000Z

    of Asphalt Concrete-Physical Testing. ” Final Report no.of Asphalt Concrete: Chemical Testing. ” Alabama Highwayconcrete mixes, it is preferable to use a mix that would have good moisture resistance under laboratory testing

  3. Estimation of soil moisture in paddy field using Artificial Neural Networks

    E-Print Network [OSTI]

    Arif, Chusnul; Setiawan, Budi Indra; Doi, Ryoichi

    2013-01-01T23:59:59.000Z

    In paddy field, monitoring soil moisture is required for irrigation scheduling and water resource allocation, management and planning. The current study proposes an Artificial Neural Networks (ANN) model to estimate soil moisture in paddy field with limited meteorological data. Dynamic of ANN model was adopted to estimate soil moisture with the inputs of reference evapotranspiration (ETo) and precipitation. ETo was firstly estimated using the maximum, average and minimum values of air temperature as the inputs of model. The models were performed under different weather conditions between the two paddy cultivation periods. Training process of model was carried out using the observation data in the first period, while validation process was conducted based on the observation data in the second period. Dynamic of ANN model estimated soil moisture with R2 values of 0.80 and 0.73 for training and validation processes, respectively, indicated that tight linear correlations between observed and estimated values of s...

  4. OVERSTORY-IMPOSED HETEROGENEITY IN SOLAR RADIATION AND SOIL MOISTURE IN A SEMIARID WOODLAND

    E-Print Network [OSTI]

    Breshears, David D.; Rich, Paul M.; Barnes, Fairley J.; Katherine, Campbell

    1997-01-01T23:59:59.000Z

    plants and the intercanopy patches that separate them, yielding an overstory with intermediate closure. Field measurements of microclimate at the scale of canopy patches, particularly for near-ground solar radiation and soil moisture, are largely lacking...

  5. The effects of aggregate gradation on moisture diffusivity in a cementious based material

    E-Print Network [OSTI]

    Szecsy, Richard

    1993-01-01T23:59:59.000Z

    Gravel), and the presence of fly ash (10% by cement weight or none). Also developed, is an experimental laboratory procedure which measures the moisture diffusivity of a cementious material. The method and procedure for measuring diffusivity developed...

  6. PATTERNS OF LEAF WETTABILITY ALONG AN EXTREME MOISTURE GRADIENT IN WESTERN PATAGONIA, ARGENTINA

    E-Print Network [OSTI]

    Brewer, Carol

    PATTERNS OF LEAF WETTABILITY ALONG AN EXTREME MOISTURE GRADIENT IN WESTERN PATAGONIA, ARGENTINA Patagonia, Argentina. Morphological and structural characteristics of leaves significantly affected leaf surfaces. Keywords: leaf wetness, morphology, water droplet, Patagonia, gradient. Introduction A large

  7. Moisture sensor based on evanescent wave light scattering by porous sol-gel silica coating

    DOE Patents [OSTI]

    Tao, Shiquan; Singh, Jagdish P.; Winstead, Christopher B.

    2006-05-02T23:59:59.000Z

    An optical fiber moisture sensor that can be used to sense moisture present in gas phase in a wide range of concentrations is provided, as well techniques for making the same. The present invention includes a method that utilizes the light scattering phenomenon which occurs in a porous sol-gel silica by coating an optical fiber core with such silica. Thus, a porous sol-gel silica polymer coated on an optical fiber core forms the transducer of an optical fiber moisture sensor according to an embodiment. The resulting optical fiber sensor of the present invention can be used in various applications, including to sense moisture content in indoor/outdoor air, soil, concrete, and low/high temperature gas streams.

  8. The effects of soil moisture on pecan weevil emergence and predicting drought delay

    E-Print Network [OSTI]

    Schraer, Stephen Martin

    1996-01-01T23:59:59.000Z

    soils. Drought conditions, induced on soil plots, as well as natural soil conditions were used to assess the effects of soil particle size distribution and soil moisture on soil hardness. Soil hardness can be determined by the following: 572...

  9. Modeling land surface processes of the midwestern United States : predicting soil moisture under a warmer climate

    E-Print Network [OSTI]

    Winter, Jonathan (Jonathan Mark)

    2010-01-01T23:59:59.000Z

    This dissertation seeks to quantify the response of soil moisture to climate change in the midwestern United States. To assess this response, a dynamic global vegetation model, Integrated Biosphere Simulator, was coupled ...

  10. Measurement of moisture and total reducing sugars using Near Infrared Spectroscopy

    E-Print Network [OSTI]

    Mehrubeoglu, Mehrube

    1995-01-01T23:59:59.000Z

    industrial applications. In this project, the accuracy and feasibility of measuring moisture and total reducing sugar content in a vegetable medium using a Near Infrared Spectroscopy technique was investigated as an alternative to slow and tedious classical...

  11. The Effect of Moisture Absorption on the Physical Properties of Polyurethane Shape Memory Polymer Foams

    E-Print Network [OSTI]

    Yu, Ya-Jen

    2012-07-16T23:59:59.000Z

    The effect of moisture absorption on the glass transition temperature (Tg) and stress/strain behavior of network polyurethane shape memory polymer (SMP) foams has been investigated. With our ultimate goal of engineering polyurethane SMP foams...

  12. MODEL 9975 SHIPPING PACKAGE: IMPACT OF CAPLUG REMOVAL ON FIBERBOARD MOISTURE LEVEL

    SciTech Connect (OSTI)

    Daugherty, W.

    2011-06-23T23:59:59.000Z

    Two 9975 shipping packages were removed from KAC and provided to SRNL for test purposes, after both packages were found to exceed the 1 inch maximum criterion for the axial gap at the top of the package. Package 9975-01818 was found with an axial gap of 1.437 inch, and an estimated 2.5 liters of excess moisture in the lower fiberboard layers. Package 9975-02287 was found with an axial gap of 1.008 inch, and only slightly elevated moisture levels relative to typical packages. Prior data from the 9975 Surveillance Program has shown that the 9975 drum provides a degree of isolation, and will tend to preserve fiberboard moisture levels for an extended period of time. Both packages were provided to SRNL to identify whether removal of the 4 caplugs in each package would allow moisture to escape the package. Following testing with the caplugs removed for approximately 1 year, this report documents the findings from this effort. Two 9975 shipping packages removed from service in K-Area Complex (KAC) due to an excessive axial gap have been tested in SRNL to determine if caplug removal would facilitate the reduction of excess fiberboard moisture. An additional question to be answered through this testing was whether the resulting moisture loss would reduce the axial gap, reversing the effect seen during storage with excess moisture present. These packages have completed approximately 1 year in test, during which time the weight of each package has steadily decreased as a result of moisture migration out of the package. However, elevated moisture levels still remain in the packages. During this test period, the bottom fiberboard layers of package 9975-01818 (which contained the greater amount of excess moisture) experienced further compaction, and the axial gap of both packages has increased. This effort has shown that removal of the caplugs may not be a sufficient measure to rehabilitate packages with excess moisture or excess axial gaps in a timely manner. However, this measure might make a meaningful contribution in combination with other actions (to be determined). It is recommended that the caplug removal tests in SRNL be discontinued at this time.

  13. The influence of particle-size distribution and moisture levels on the formation of soil hardpans

    E-Print Network [OSTI]

    Bauer, Herman John

    1963-01-01T23:59:59.000Z

    THE INFLUENCE OF PARTICLE-SIZE DISTRIBUTION AND MOISTURE LEVELS ON THE FORMATION OF SOIL HARDPANS A Thesis By HERMAN J. BAUER Submitted to the Graduate School of the Agricultural and Mechanical College of Texas in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE January, 1963 Major Subject: Soil Physics THE INFLUENCE OF PARTICLE-SIZE DISTRIBUTION AND MOISTURE LEVELS ON THE FORMATION OF SOIL HARDPANS A Thesis By HERMAN J. BAUER Approved as to style and content...

  14. The influence of particle-size distribution and moisture levels on the formation of soil hardpans 

    E-Print Network [OSTI]

    Bauer, Herman John

    1963-01-01T23:59:59.000Z

    THE INFLUENCE OF PARTICLE-SIZE DISTRIBUTION AND MOISTURE LEVELS ON THE FORMATION OF SOIL HARDPANS A Thesis By HERMAN J. BAUER Submitted to the Graduate School of the Agricultural and Mechanical College of Texas in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE January, 1963 Major Subject: Soil Physics THE INFLUENCE OF PARTICLE-SIZE DISTRIBUTION AND MOISTURE LEVELS ON THE FORMATION OF SOIL HARDPANS A Thesis By HERMAN J. BAUER Approved as to style and content...

  15. Effect of external stress on moisture diffusion in an epoxy resin and its composite material

    E-Print Network [OSTI]

    Henson, Michael Chamberlain

    1986-01-01T23:59:59.000Z

    EFFECT OF EXTERNAL STRESS ON MOISTURE DIFFUSION IN AN EPOXY RESIN AND ITS C(MPOSITE MATERIAL A Thesis by MICHAEL CHAMBERLAIN HENSON Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement... for the degree of MASTER OF SCIENCE May 1986 Major Subject: Civil Engineering EFFECT OF EXTERNAL STRESS ON MOISTURE DIFFUSION IN AN EPOXY RESIN AND ITS CCNPOSITE MATERIAL A Thesis by MICHAEL CHAMBERLAIN HENSON Approved as to style and content by: (Y...

  16. The effects of grain moisture content and grain temperature on the penetration of hydrogen cyanide

    E-Print Network [OSTI]

    Kunz, Sidney E

    1962-01-01T23:59:59.000Z

    THE EFFECTS QF CRAIN MOISTURE CONTENT AND GRAIN TEMiPERATURE ON THE &NETRATION OF HYDROGEN CYANIDE A Thesis SIDNEY EDMUND KUNZ Submitted to the Graduate School of ths Agricultural and Mechanical College of Texas in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE (Mionth) 1262 (Year) Mayor Subject ghtdlggllQJLK THE EFFECTS OF GRAIN MOISTURE CONTENT JBD GRAIN TEMPERATURE ON THE PENETRATION OF HYDROGEN CYANIDE A Thesis SIDNEY EDNUND KUNZ Approved as to style...

  17. Distribution of soil and leaf water potentials of mature grapefruit trees under three soil moisture regimes

    E-Print Network [OSTI]

    Prathapar, Sanmugam Ahembaranathan

    1982-01-01T23:59:59.000Z

    DISTRIBUTION OF SOIL AND LEAF WATER POTENTIALS OF MATURE GRAPEFRUIT TREES UNDER THREE SOIL MOISTURE REGIMES A Thesis by SANMUGAM AHEMBARANATHAN PRATHAPAP, Submitted to the Graduate College of Texas A&M University in partial fulfillment... of the requirement for the degree of MASTER OF SCIENCE May 1982 Major Subject; Agricultural Engineering DISTRIBUTION OF SOIL AND LEAF WATER POTENTIALS OF MATURE GRAPEFRUIT TREES UNDER THREE SOIL MOISTURE REGIMES A Thesis by SANMUGAM AHEMBARANATHAN PRATHAPAR...

  18. Dual frequency microwave radiometer measurements of soil moisture for bare and vegetated rough surfaces

    E-Print Network [OSTI]

    Lee, Siu Lim

    1974-01-01T23:59:59.000Z

    DUAL FREQUENCY MICROWAVE RADIOMETER MEASUREMENTS OF SOIL MOISTURE FOR BARE AND VEGETATED ROUGH SURFACES A Thesis by SIU LIM LEE Submitted to the Graduate College of Texas A(M University in partial fulfillment of the requirement for the degree... of MASTER OF SCIENCE August 1974 Major Subject: Electrical Engineering DUAL FREQUENCY MICROWAVE RADIOMETER MEASUREMENTS OF' SOIL MOISTURE FOR BARE AND VEGETATED ROUGH SURFACES A Thesis by SIU LIM LEE Approved as to style and content by: (C rman...

  19. Evaluation of oil shale bitumen as a pavement asphalt additive to reduce moisture damage susceptibility

    SciTech Connect (OSTI)

    Robertson, R.E.; Harnsberger, P.M.; Wolf, J.M.

    1991-01-01T23:59:59.000Z

    An unrefined shale bitumen was evaluated as an agent to reduce moisture damage susceptibility of asphalt aggregate mixtures. Some activity was observed but less than might have been expected based on the molecular weight and nitrogen content of the bitumen. The counter effects of free carboxylic acids, which are known to be variable in asphalt and which are also present in the unrefined bitumen, appear to diminish the activity of the bitumen to inhibit moisture damage. 5 refs., 1 tab.

  20. Potential Soil Moisture Products from the Aquarius Radiometer and Scatterometer Using an Observing System Simulation Experiment

    SciTech Connect (OSTI)

    Luo, Yan [I.M. Systems Group at NOAA/NCEP/EMC; Feng, Xia [George Mason University; Houser, Paul [George Mason University; Anantharaj, Valentine G [ORNL; Fan, Xingang [Western Kentucky University, Bowling Green; De Lannoy, Gabrielle [Ghent University, Belgium; Zhan, Xiwu [NOAA/NESDIS Center for Satellite Applications and Research; Dabbiru, Lalitha [Mississippi State University (MSU)

    2013-01-01T23:59:59.000Z

    Using an observing system simulation experiment (OSSE), we investigate the potential soil moisture retrieval capability of the National Aeronautics and Space Administration (NASA) Aquarius radiometer (L-band 1.413 GHz) and scatterometer (L-band, 1.260 GHz). We estimate potential errors in soil moisture retrievals and identify the sources that could cause those errors. The OSSE system includes (i) a land surface model in the NASA Land Information System, (ii) a radiative transfer and backscatter model, (iii) a realistic orbital sampling model, and (iv) an inverse soil moisture retrieval model. We execute the OSSE over a 1000 2200 km2 region in the central United States, including the Red and Arkansas river basins. Spatial distributions of soil moisture retrieved from the radiometer and scatterometer are close to the synthetic truth. High root mean square errors (RMSEs) of radiometer retrievals are found over the heavily vegetated regions, while large RMSEs of scatterometer retrievals are scattered over the entire domain. The temporal variations of soil moisture are realistically captured over a sparely vegetated region with correlations 0.98 and 0.63, and RMSEs 1.28% and 8.23% vol/vol for radiometer and scatterometer, respectively. Over the densely vegetated region, soil moisture exhibits larger temporal variation than the truth, leading to correlation 0.70 and 0.67, respectively, and RMSEs 9.49% and 6.09% vol/vol respectively. The domain-averaged correlations and RMSEs suggest that radiometer is more accurate than scatterometer in retrieving soil moisture. The analysis also demonstrates that the accuracy of the retrieved soil moisture is affected by vegetation coverage and spatial aggregation.

  1. FINAL REPORT FOR MOISTURE EFFECTS ON COMPACTION OF FIBERBOARD IN A 9975 SHIPPING PACKAGE

    SciTech Connect (OSTI)

    Stefek, T.; Daugherty, W.; Estochen, E.

    2013-09-17T23:59:59.000Z

    Compaction of lower layers in the fiberboard assembly has been observed in 9975 packages that contain elevated moisture. Lab testing has resulted in a better understanding of the relationship between the fiberboard moisture level and compaction of the lower fiberboard assembly, and the behavior of the fiberboard during transport. In laboratory tests of cane fiberboard, higher moisture content has been shown to correspond to higher total compaction, greater rate of compaction, and continued compaction over a longer period of time. In addition, laboratory tests have shown that the application of a dynamic load results in higher fiberboard compaction compared to a static load. The test conditions and sample geometric/loading configurations were chosen to simulate the regulatory requirements for 9975 package input dynamic loading. Dynamic testing was conducted to acquire immediate and cumulative changes in geometric data for various moisture levels. Two sample sets have undergone a complete dynamic test regimen, one set for 27 weeks, and the second set for 47 weeks. The dynamic input, data acquisition, test effects on sample dynamic parameters, and results from this test program are summarized and compared to regulatory specifications for dynamic loading. Compaction of the bottom fiberboard layers due to the accumulation of moisture is one possible cause of an increase in the axial gap at the top of the package. The net compaction of the bottom layers will directly add to the axial gap. The moisture which caused this compaction migrated from the middle region of the fiberboard assembly (which is typically the hottest). This will cause the middle region to shrink axially, which will also contribute directly to the axial gap. Measurement of the axial gap provides a screening tool for identifying significant change in the fiberboard condition. The data in this report provide a basis to evaluate the impact of moisture and fiberboard compaction on 9975 package performance during storage at the Savannah River Site (SRS).

  2. Using Whole-House Field Tests to Empirically Derive Moisture Buffering Model Inputs

    SciTech Connect (OSTI)

    Woods, J.; Winkler, J.; Christensen, D.; Hancock, E.

    2014-08-01T23:59:59.000Z

    Building energy simulations can be used to predict a building's interior conditions, along with the energy use associated with keeping these conditions comfortable. These models simulate the loads on the building (e.g., internal gains, envelope heat transfer), determine the operation of the space conditioning equipment, and then calculate the building's temperature and humidity throughout the year. The indoor temperature and humidity are affected not only by the loads and the space conditioning equipment, but also by the capacitance of the building materials, which buffer changes in temperature and humidity. This research developed an empirical method to extract whole-house model inputs for use with a more accurate moisture capacitance model (the effective moisture penetration depth model). The experimental approach was to subject the materials in the house to a square-wave relative humidity profile, measure all of the moisture transfer terms (e.g., infiltration, air conditioner condensate) and calculate the only unmeasured term: the moisture absorption into the materials. After validating the method with laboratory measurements, we performed the tests in a field house. A least-squares fit of an analytical solution to the measured moisture absorption curves was used to determine the three independent model parameters representing the moisture buffering potential of this house and its furnishings. Follow on tests with realistic latent and sensible loads showed good agreement with the derived parameters, especially compared to the commonly-used effective capacitance approach. These results show that the EMPD model, once the inputs are known, is an accurate moisture buffering model.

  3. Electronmagnetic induction probe calibration for electrical conductivity measurements and moisture content determination of Hanford high level waste

    SciTech Connect (OSTI)

    Wittekind, W.D., Westinghouse Hanford

    1996-05-23T23:59:59.000Z

    Logic of converting EMI measured electrical conductivity to moisture with expected uncertainty. Estimates from present knowledge, assumptions, and measured data. Archie`s Law has been used since the 1940`s to relate electrical conductivity in porous media to liquid volume fraction. Measured electrical conductivity to moisture content uses: Porosity, Interstitial liquid electrical conductivity, Solid particle density,Interstitial liquid density, and interstitial liquid water content. The uncertainty of assumed values is calculated to determine the final moisture wt.% result uncertainty.

  4. Atmospheric Moisture Budget and Spatial Resolution Dependence of Precipitation Extremes in Aquaplanet Simulations

    SciTech Connect (OSTI)

    Yang, Qing; Leung, Lai-Yung R.; Rauscher, Sara; Ringler, Todd; Taylor, Mark

    2014-05-01T23:59:59.000Z

    This study investigates the resolution dependency of precipitation extremes in an aqua-planet framework. Strong resolution dependency of precipitation extremes is seen over both tropics and extra-tropics, and the magnitude of this dependency also varies with dynamical cores. Moisture budget analyses based on aqua-planet simulations with the Community Atmosphere Model (CAM) using the Model for Prediction Across Scales (MPAS) and High Order Method Modeling Environment (HOMME) dynamical cores but the same physics parameterizations suggest that during precipitation extremes moisture supply for surface precipitation is mainly derived from advective moisture convergence. The resolution dependency of precipitation extremes mainly originates from advective moisture transport in the vertical direction. At most vertical levels over the tropics and in the lower atmosphere over the subtropics, the vertical eddy transport of mean moisture field dominates the contribution to precipitation extremes and its resolution dependency. Over the subtropics, the source of moisture, its associated energy, and the resolution dependency during extremes are dominated by eddy transport of eddies moisture at the mid- and upper-troposphere. With both MPAS and HOMME dynamical cores, the resolution dependency of the vertical advective moisture convergence is mainly explained by dynamical changes (related to vertical velocity or omega), although the vertical gradients of moisture act like averaging kernels to determine the sensitivity of the overall resolution dependency to the changes in omega at different vertical levels. The natural reduction of variability with coarser resolution, represented by areal data averaging (aggregation) effect, largely explains the resolution dependency in omega. The thermodynamic changes, which likely result from non-linear feedback in response to the large dynamical changes, are small compared to the overall changes in dynamics (omega). However, after excluding the data aggregation effect in omega, thermodynamic changes become relatively significant in offsetting the effect of dynamics leading to reduce differences between the simulated and aggregated results. Compared to MPAS, the simulated stronger vertical motion with HOMME also results in larger resolution dependency. Compared to the simulation at fine resolution, the vertical motion during extremes is insufficiently resolved/parameterized at the coarser resolution even after accounting for the natural reduction in variability with coarser resolution, and this is more distinct in the simulation with HOMME. To reduce uncertainties in simulated precipitation extremes, future development in cloud parameterizations must address their sensitivity to spatial resolution as well as dynamical cores.

  5. STATUS REPORT FOR MOISTURE EFFECTS ON COMPACTION OF FIBERBOARD IN A 9975 SHIPPING PACKAGE

    SciTech Connect (OSTI)

    Stefek, T.; Daugherty, W.; Estochen, E.

    2011-06-23T23:59:59.000Z

    Compaction of lower layers in the fiberboard overpack has been observed in 9975 packages that contain elevated moisture. Lab testing has resulted in a better understanding of the relationship between the fiberboard moisture level and compaction of the lower fiberboard assembly, and the behavior of the fiberboard during transport. In laboratory tests, higher moisture content has been shown to correspond to higher total compaction of fiberboard material, greater rate of compaction, and continued compaction over a longer period of time. In addition, laboratory tests have shown that the application of a dynamic load results in higher fiberboard compaction. The test conditions and sample geometric/loading configurations were chosen to simulate the regulatory requirements for 9975 package input dynamic loading. Dynamic testing was conducted over a period of six months to acquire immediate and cumulative changes in geometric data for various moisture levels. Currently, one sample set has undergone a complete dynamic test regimen, while testing of another set is still in-progress. The dynamic input, data acquisition, test effects on sample dynamic parameters, and interim results from this test program are summarized and compared to regulatory specifications for dynamic loading. This will provide a basis from which to evaluate the impact of moisture and fiberboard compaction on the safety basis for transportation (Safety Analysis Report for Packaging) and storage (facility Documented Safety Analysis) at the Savannah River Site (SRS).

  6. alternating chemoradiotherapy consisting: Topics by E-print Network

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

    Sciences Websites Summary: Sequential Consistency for Heterogeneous-Race-Free DEREK R. HOWER, BRADFORD M. BECKMANN, BENEDICT R: Sequential Consistency for Data-Race-Free (SC for...

  7. aortic rupture consisting: Topics by E-print Network

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

    Sciences Websites Summary: Sequential Consistency for Heterogeneous-Race-Free DEREK R. HOWER, BRADFORD M. BECKMANN, BENEDICT R: Sequential Consistency for Data-Race-Free (SC for...

  8. archaeological record consistent: Topics by E-print Network

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

    Sciences Websites Summary: Sequential Consistency for Heterogeneous-Race-Free DEREK R. HOWER, BRADFORD M. BECKMANN, BENEDICT R: Sequential Consistency for Data-Race-Free (SC for...

  9. air regulations consistency: Topics by E-print Network

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

    Sciences Websites Summary: Sequential Consistency for Heterogeneous-Race-Free DEREK R. HOWER, BRADFORD M. BECKMANN, BENEDICT R: Sequential Consistency for Data-Race-Free (SC for...

  10. Variation in soil moisture and N availability modulates carbon and water exchange in a California grassland experiment

    E-Print Network [OSTI]

    St. Clair, S.B.

    2010-01-01T23:59:59.000Z

    in soil moisture and N availability modulates carbon andamount and timing, N availability, and plant communityparticularly as water availability was increased. These

  11. Effects of temperature and moisture on low-volume roads

    E-Print Network [OSTI]

    Chandra, Djan

    1988-01-01T23:59:59.000Z

    factors for the pavement stiffness of low-volume roads. METHOD OF APPROACH The studies undertaken to achieve the stated objectives consist of three main parts, and they are: laboratory stress relaxation testing on granular soil, field testing... oi these programs were developerl based upon layered els, stic theory or the finite ele- ment method. A detailed comparison of these programs for backcalculating layer moduli of low-volume roads has been presented by Chua (1988). In this study...

  12. Low-temperature conversion of high-moisture biomass: Topical report, January 1984--January 1988

    SciTech Connect (OSTI)

    Sealock, L.J. Jr.; Elliott, D.C.; Butner, R.S.; Neuenschwander, G.G.

    1988-10-01T23:59:59.000Z

    Pacific Northwest Laboratory (PNL) is developing a low-temperature, catalytic process that converts high-moisture biomass feedstocks and other wet organic substances to useful gaseous and liquid fuels. The advantage of this process is that it works without the need for drying or dewatering the feedstock. Conventional thermal gasification processes, which require temperatures above 750/degree/C and air or oxygen for combustion to supply reaction heat, generally cannot utilize feedstocks with moisture contents above 50 wt %, as the conversion efficiency is greatly reduced as a result of the drying step. For this reason, anaerobic digestion or other bioconversion processes traditionally have been used for gasification of high-moisture feedstocks. However, these processes suffer from slow reaction rates and incomplete carbon conversion. 50 refs., 21 figs., 22 tabs.

  13. ANALYSIS OF THE AXIAL GAP VS FIBERBOARD MOISTURE CONTENT IN A 9975 SHIPPING PACKAGE

    SciTech Connect (OSTI)

    Daugherty, W.

    2013-09-30T23:59:59.000Z

    The fiberboard assembly within a 9975 shipping package contains a modest amount of moisture, which can migrate to the cooler regions of the package when an internal heat load is present. Typically, this leads to increased moisture levels in the bottom fiberboard layers, along with elevated chloride levels which can leach from the fiberboard. Concerns have been raised that this condition could lead to corrosion of the stainless steel drum. It has been postulated that checking the axial gap at the top of the package against the current 1 inch maximum criterion provides a sufficient indication regarding the integrity of the fiberboard and drum. This report estimates the increase in axial gap that might be expected for a given moisture increase in the bottom fiberboard layers, and the likelihood that the increase will create a nonconforming condition that will lead to identification of the moisture increase. Using data relating the fiberboard moisture content with the degree of compaction under load, the present analysis indicates that the axial gap will increase by 0.282 inch as the bottom fiberboard layers approach the saturation point. This increase will cause approximately 58% of packages with otherwise nominal package component dimensions to fail the axial gap criterion, based on a survey of axial gap values recorded in K-Area surveillance activities. As the moisture content increases above saturation, the predicted increase in axial gap jumps to 0.405 inch, which would result in 92% or more of all packages failing the axial gap criterion. The data and analysis described in this report are specific to cane fiberboard. While it is expected that softwood fiberboard will behave similarly, such behavior has not yet been demonstrated.

  14. Bounds and self-consistent estimates for elastic constants of granular polycrystals composed of orthorhombics or crystal with higher symmetries

    SciTech Connect (OSTI)

    Berryman, J. G.

    2011-02-01T23:59:59.000Z

    Methods for computing Hashin-Shtrikman bounds and related self-consistent estimates of elastic constants for polycrystals composed of crystals having orthorhombic symmetry have been known for about three decades. However, these methods are underutilized, perhaps because of some perceived difficulties with implementing the necessary computational procedures. Several simplifications of these techniques are introduced, thereby reducing the overall computational burden, as well as the complications inherent in mapping out the Hashin-Shtrikman bounding curves. The self-consistent estimates of the effective elastic constants are very robust, involving a quickly converging iteration procedure. Once these self-consistent values are known, they may then be used to speed up the computations of the Hashin-Shtrikman bounds themselves. It is shown furthermore that the resulting orthorhombic polycrystal code can be used as well to compute both bounds and self-consistent estimates for polycrystals of higher-symmetry tetragonal, hexagonal, and cubic (but not trigonal) materials. The self-consistent results found this way are shown to be the same as those obtained using the earlier methods, specifically those methods designed specially for each individual symmetry type. But the Hashin-Shtrikman bounds found using the orthorhombic code are either the same or (more typically) tighter than those found previously for these special cases (i.e., tetragonal, hexagonal, and cubic). The improvement in the Hashin-Shtrikman bounds is presumably due to the additional degrees of freedom introduced into the available search space.

  15. Tropical synoptic scale moisture fields observed from the Nimbus-7 SMMR

    E-Print Network [OSTI]

    Fink, Jeffrey David

    1989-01-01T23:59:59.000Z

    TROPICAL SYNOPTIC SCALE MOISTURE FIELDS OBSERVED FROM THE NIMBUS ? 7 SMMR A Thesis by JEFFREY DAVID FINK Submitted to the OfFice of Graduate Studies of Texas AkM University in partial fulfillment of the requirements for the degree of MASTER... ( iliember) AIarshnll J. 1VIcVnrlnnd ( (tlemb er ) James Il. Scoggins (Read of Departnrent) i%lay 1989 ns ABSTRACT Tropical Synoptic Scale Moisture Fields Observed from the NIMBUS ? 7 SMMR. (May 1989) Jefl'rey David Fink, B. S. , Texas A...

  16. Study of the moisture-fertility requirements of cotton in the Brazos River Valley, 1957

    E-Print Network [OSTI]

    Keese, Carroll Wayne

    1958-01-01T23:59:59.000Z

    of the moisture level imposed, and that water was not used efficiently from the two to five-foot zone. Hamilton and Stanberry (2) investigated the effects of varying rates of nitrogen fertilizer on the need of cotton for irrigation at Yuma, Arizona...LIBRARY II a III COLLEI:. e& 7EXAs STUDY OF THE MOISTURE-FERTILITY REQUIREMENTS OF COTTON IN THE BRAZOS RIVER VALLEY - 1957 A Thesis by CARROLL VIAYNE KEESE Submitted to the Graduate School of the Agricultural and Mechanical College...

  17. The effects of soil moisture on the phytotoxicity of a microwave field

    E-Print Network [OSTI]

    Whatley, Thomas Lamar

    1974-01-01T23:59:59.000Z

    THF. FFFECTS OF SOIL MOISTURE ON THE PHYTOTOXICITY OF A MICROWAVE FIELD A Thesis THOMAS LAMAR WHATLEY Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE... August 1974 Ma5or Sub)ect: Agronomy THE EFFECTS OF SOIL MOISTURE ON THE PHYTOTOXICITY OF A MICROHAVE FIELD A Thesis by THOMAS LAMAR VHATLEY Approved as to style and content by: (Chairman of Committee) (Head of Department) Member) ( t) August...

  18. A climatology of tropical moisture bursts in the eastern North Pacific Ocean

    E-Print Network [OSTI]

    Smith, Neil Ray

    1986-01-01T23:59:59.000Z

    A CLIil'IATOLOGY OF TROFICAL MOISTURE BURSTS IN THF. EASTERN NORTH PACIFIC OCEAN A Theseus NEIL R A Y SMITH Submitted to the Graduate College of' Texas AKIil University in partial fulfil)nient of the requirements I'o. the degree of MASTER... OF SCIENCE December 1986 M;i;iir Subject: Meteorology A CLIMATOLOGY OF TROPICAL MOISTURE BURSTS IN THE EASTERN NORTH PACIFIC OCEAN A Thesis NEIL RAY SMITH Approved as to style and content by: James P. McE uirk (Co-Chairman) ylmer H, Thompson (Co...

  19. Examining the Relationship between Antecedent Soil Moisture and Summer Precipitation in the U.S. Great Plains

    E-Print Network [OSTI]

    Meng, Lei

    2010-01-14T23:59:59.000Z

    ............................................................................................. 67 5.2 Spatial variations in the soil moisture-precipitation relationship............ 67 5.3 Temporal variations in the soil moisture-precipitation relationship ....... 71 5.4 Persistence of spatial patterns in SM anomalies... ..................................... 74 5.5 Temporal variations in the relationship between GP summer precipitation and Ni?o SSTs ................................................................... 75 5.6 SST persistence versus SM persistence...

  20. Effect of grid size on runoff and soil moisture for a variable-source-area hydrology model

    E-Print Network [OSTI]

    Walter, M.Todd

    landscapes are dependent on the distribution and pattern of soil moisture and water transport. In this paper for efficient manage- ment of water quality [U.S. Environmental Protection Agency, 1994, 1995, 1996Effect of grid size on runoff and soil moisture for a variable-source-area hydrology model Wen

  1. Smart grids are forcing the evolution of grid operational strategies. The variability inherent in large-scale renewable generation challenges existing regulation approaches.

    E-Print Network [OSTI]

    Hiskens, Ian A.

    stable, optimal operation. Wide Area Monitoring and Control (WAMC) Phasor measurement units (PMUs transformers (TCPSTs, phase angle differences), and unified power flow controllers (UPFCs, all of the aboveSmart grids are forcing the evolution of grid operational strategies. The variability inherent

  2. SOIL MOISTURE RETENTION CHARACTERISTICS AND HYDRAULIC CONDUCTIVITY FOR DIFFERENT AREAS IN INDIA IN SELECTED STATES

    E-Print Network [OSTI]

    Kumar, C.P.

    systems require knowledge of the relationships between soil moisture content (), soil water pressure (h and water content relationship, hydraulic conductivity and water content relationship of the soil, saturated conductivity is affected markedly by the volumetric water content of soil. The relation between matric

  3. MOISTURE EFFECT ON DURABILITY OF AXIALLY LOADED CONCRETE-FILLED TUBULAR FRP PILES

    E-Print Network [OSTI]

    MOISTURE EFFECT ON DURABILITY OF AXIALLY LOADED CONCRETE-FILLED TUBULAR FRP PILES Miguel Pando, Ph_rizkalla@ncsu.edu ABSTRACT Fiber reinforced polymer (FRP) composite piles are a possible foundation alternative for projects located in harsh marine environments. Problems associated with traditional pile materials used in harsh

  4. Feasibility study of prompt gamma neutron activation for NDT measurement of moisture in stone and brick

    SciTech Connect (OSTI)

    Livingston, R. A.; Al-Sheikhly, M. [Materials Science and Engineering Dept., U. of Maryland, College Park MD 20742 (United States); Grissom, C.; Aloiz, E. [Museum Conservation Institute, Smithsonian Institution, Washington DC 20746 (United States); Paul, R. [Chemical Sciences Division, NIST, Gaithersburg MD 20899 (United States)

    2014-02-18T23:59:59.000Z

    The conservation of stone and brick architecture or sculpture often involves damage caused by moisture. The feasibility of a NDT method based on prompt gamma neutron activation (PGNA) for measuring the element hydrogen as an indication of water is being evaluated. This includes systematic characterization of the lithology and physical properties of seven building stones and one brick type used in the buildings of the Smithsonian Institution in Washington, D.C. To determine the required dynamic range of the NDT method, moisture-related properties were measured by standard methods. Cold neutron PGNA was also used to determine chemically bound water (CBW) content. The CBW does not damage porous masonry, but creates an H background that defines the minimum level of detection of damaging moisture. The CBW was on the order of 0.5% for all the stones. This rules out the measurement of hygric processes in all of the stones and hydric processed for the stones with fine scale pore-size distributions The upper bound of moisture content, set by porosity through water immersion, was on the order of 5%. The dynamic range is about 10–20. The H count rates were roughly 1–3 cps. Taking into account differences in neutron energies and fluxes and sample volume between cold PGNA and a portable PGNA instrument, it appears that it is feasible to apply PGNA in the field.

  5. A Satellite Study of Tropical Moist Convection and Environmental Variability: A Moisture and Thermal Budget Analysis

    E-Print Network [OSTI]

    Masunaga, Hirohiko

    radiometer and scatterometer aboard different platforms. Satellite measurements of atmospheric parameters of moisture and dry static energy and their vertical flux at cloud base from satellite observations alone convergence for highly organized systems; 2) FT diabatic heating is largely offset on an instantaneous basis

  6. Passive microwave soil moisture downscaling using evaporative fraction Olivier Merlin1

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    stations (METFLUX) and six flights of the L-band Push Broom Microwave Radiometer (PBMR). For each PBMR fraction (EF), which is the ratio of the evapotranspiration to the total energy available at the surface, especially for high soil moisture values. Those results illustrate the potential use of high

  7. Evaluation of ERS Scatterometer soil moisture products over a half-degree region in Southwestern France

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    . Based on a high resolution soil moisture simulation (1km²) validated at the local scale, the ERS in the water and energy exchanges between the land surface and the atmosphere. Several authors have shown027231 #12;Aeronautics and Space Administration (NASA) sensors such as the AMSR-E radiometer (since 2002

  8. Soil moisture variability of root zone profiles within SMEX02 remote sensing footprints

    E-Print Network [OSTI]

    as the par- titioning of incoming solar radiation and long wave radia- tion into outgoing long wave radiation.e., various active and passive microwave sensors), which provide mean sur- face soil moisture (0­5 cm) values footprints can provide a blueprint to design ground-based experiments and net- works and to efficiently use

  9. Characterization of fracture patterns and hygric properties for moisture flow modelling in cracked concrete

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    of building materials is far from complete. The pore structure of the material itself may change over time assessment, not only of building and building components, but of any built structure in general structures, as well as on the health and comfort of their occupants. Any analysis of moisture transfer

  10. The Effects of Roof Membrane Color on Moisture Accumulation in Low-slope Commercial Roof Systems

    SciTech Connect (OSTI)

    Kehrer, Manfred [ORNL

    2011-01-01T23:59:59.000Z

    The use of highly reflective roof membrane systems is being promoted and in some cases required in energy codes and green building codes and standards. Highly reflective membranes, which typically are light in color, have demonstrated reduced overall energy consumption in cooling dominated climate. These membranes also are theorized to reduce the heat island effect. Concern has been expressed about using highly reflective roof membrane systems in cool to cold climate zones because they potentially increase moisture accumulation in roof systems. Roof membranes are vapor retarders. The theory is that highly reflective membranes reflect the heat that could enter the roof assembly, potentially providing a condensing surface on the cold side of the roof assembly during winter months. The other concern is that roof systems using highly reflective membranes will not get hot enough during the summer months to dry out moisture that may have condensed or otherwise entered the roof assembly. This study focuses on mechanically attached, highly reflective, single-ply roof systems installed on low-slope (less than 2:12) structures in cool to cold climate zones. Three sources of data are considered when determining the moisture accumulation potential of these systems. 1.Test roof cuts taken during the winter months 2.Modeling data from a building envelope model specifically designed to evaluate moisture accumulation 3.Data from previous studies to determine the effects of roof membrane color on the drying rate of low-slope roof assemblies

  11. ASSESSMENT OF BISCUIT MOISTURE AND BISCUIT BROWNING Jens Michael Carstensen1

    E-Print Network [OSTI]

    weight moisture measurements. The data set includes biscuits from different lines and both hot and cooled. The imaging system, VideometerLab (www.videometer.com) captures 18 high resolution spectral images representations may be estimated in both the biscuit center region and in the edge/corner region. CIELAB

  12. Uncertainties in Estimating Moisture Fluxes over the Intra-Americas Sea ALBERTO M. MESTAS-NUEZ

    E-Print Network [OSTI]

    by these uncertainties. Therefore, NCEP­ NCAR reanalysis, with its global coverage and long-term record, can be used-third of all the summer moisture that enters the continental United States is transported by the GPLLJ (Helfand United States. Future re- search aimed at understanding summer precipitation must therefore deal

  13. Monitoring ET, Soil Moisture Saves Farmers Water, Energy, Time and Money

    E-Print Network [OSTI]

    Nebraska-Lincoln, University of

    Monitoring ET, Soil Moisture Saves Farmers Water, Energy, Time and Money By Sandi Alswager Karstens irrigation," said Gary Zoubek, extension educator in York County. "Using these tools not only saves energy that these two tools used together can save two to three inches of irrigation water per season, he said

  14. Fuel moisture influences on fire-altered carbon in masticated fuels: An experimental study

    E-Print Network [OSTI]

    ] Biomass burning is a significant contributor to atmospheric carbon emissions but may also provide mastication (mechanical forest thinning) and fire convert biomass to black carbon is essential moisture and its role in dictating both the quantity and quality of the carbon produced in masticated fuel

  15. Effectiveness of vertical moisture barriers in highway pavements on expansive soils

    E-Print Network [OSTI]

    Jayatilaka, Ranasinghege

    1993-01-01T23:59:59.000Z

    finite element program, FLODEF, which couples moisture flow and elasticity was calibrated to reproduce the field observations of the suction in each of the locations. The program was then used to perform a study of the effects of climatic zone, degree...

  16. Evapotranspiration and regional probabilities of soil moisture stress in rainfed crops, southern India

    E-Print Network [OSTI]

    Biggs, Trent

    India Trent W. Biggs a, *, Prasanta K. Mishra b , Hugh Turral c a Department of Geography, San Diego 0902; fax: +1 619 594 4938. E-mail addresses: tbiggs@mail.sdsu.edu (T.W. Biggs), pkmbellary in press as: Biggs, T.W. et al., Evapotranspiration and regional probabilities of soil moisture stress

  17. The effects of moisture and particle size of feedlot biomass on co-firing burner performance 

    E-Print Network [OSTI]

    Chen, Chen-Jung

    2001-01-01T23:59:59.000Z

    increased from 350 ppm to 650 ppm while CO decreased from 46,000 ppm to 18,000 ppm (data measured at the first probe, 6" from the burner). The external water injection used to simulate high moisture FB decreased the pollutant emissions (NO[]) from 570 ppm...

  18. Modeling studies of gas movement and moisture migration at Yucca Mountain, Nevada

    SciTech Connect (OSTI)

    Tsang, Y.W.; Pruess, K. [Lawrence Berkeley Lab., CA (United States)

    1991-06-01T23:59:59.000Z

    Modeling studies on moisture redistribution processes that are mediated by gas phase flow and diffusion have been carried out. The problem addressed is the effect of a lowered humidity of the soil gas at the land surface on moisture removal from Yucca Mountain, the potential site for a high-level nuclear waste repository. At the land surface, humid formation gas contacts much drier atmospheric air. Near this contact, the humidity of the soil gas may be considerably lower than at greater depth, where the authors expect equilibrium with the liquid phase and close to 100% humidity. The lower relative humidity of the soil gas may be modeled by imposing, at the land surface, an additional negative capillary suction corresponding to vapor pressure lowering according to Kelvin`s Equation, thus providing a driving force for the upward movement of moisture in both the vapor and liquid phases. Sensitivity studies show that moisture removal from Yucca Mountain arising from the lowered-relative-humidity boundary condition is controlled by vapor diffusion. There is much experimental evidence in the soil literature that diffusion of vapor is enhanced due to pore-level phase change effects by a few orders of magnitude. Modeling results presented here will account for this enhancement in vapor diffusion.

  19. UNCORRECTEDPROOF 1 Towards deterministic downscaling of SMOS soil moisture using MODIS derived soil

    E-Print Network [OSTI]

    Boyer, Edmond

    of environmental applications including meteor- 33 ology, hydrology, water resource management and climatology. 34UNCORRECTEDPROOF 1 Towards deterministic downscaling of SMOS soil moisture using MODIS derived soil Kerr b 4 a Civil and Environmental Engineering, The University of Melbourne, Australia 5 b Centre d

  20. Atmospheric Moisture Transports from Ocean to Land and Global Energy Flows in Reanalyses

    E-Print Network [OSTI]

    Fasullo, John

    Atmospheric Moisture Transports from Ocean to Land and Global Energy Flows in Reanalyses KEVIN E energy and hydrological cycles from eight current atmospheric reanalyses and their depiction of changes over time. A brief evaluation of the water and energy cycles in the latest version of the NCAR climate

  1. Decentralized Storage Consistency via Versioning Servers Garth Goodson,

    E-Print Network [OSTI]

    , consistency protocol, versioning servers, distributed systems #12; Introduction Survivable storage systems (e produce garbage. Protocols exist for achieving such consistency, they generally involve significant extra], survival client compromises [34]. Further, implemented with minimal performance cost ( [34] and capacity

  2. Hillslope-scale soil moisture estimation with a physically-based ecohydrology model and L-band microwave remote sensing observations from space

    E-Print Network [OSTI]

    Flores, Alejandro Nicolas

    2009-01-01T23:59:59.000Z

    Soil moisture is a critical hydrosphere state variable that links the global water, energy, and carbon cycles. Knowledge of soil moisture at scales of individual hillslopes (10's to 100's of meters) is critical to advancing ...

  3. Generalized contexts and consistent histories in quantum mechanics

    SciTech Connect (OSTI)

    Losada, Marcelo [Instituto de Física Rosario, Pellegrini 250, 2000 Rosario (Argentina); Laura, Roberto, E-mail: rlaura@fceia.unr.edu.ar [Facultad de Ciencias Exactas, Ingeniería y Agrimensura, Pellegrini 250, 2000 Rosario (Argentina); Instituto de Física Rosario, Pellegrini 250, 2000 Rosario (Argentina)

    2014-05-15T23:59:59.000Z

    We analyze a restriction of the theory of consistent histories by imposing that a valid description of a physical system must include quantum histories which satisfy the consistency conditions for all states. We prove that these conditions are equivalent to imposing the compatibility conditions of our formalism of generalized contexts. Moreover, we show that the theory of consistent histories with the consistency conditions for all states and the formalism of generalized context are equally useful representing expressions which involve properties at different times.

  4. ORCHIS: CONSISTENCY-DRIVEN DATA QUALITY MANAGEMENT IN SENSING SYSTEMS

    E-Print Network [OSTI]

    Shi, Weisong

    Sensing Data Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . 29 3.3 Related Energy Efficiency Design . . . . . . . . . . . . . . . . . . . . . . . . . 30 3.4 Related Data Consistency Models

  5. Software Agent Architecture for Consistency Management in Distributed Documents

    E-Print Network [OSTI]

    Finkelstein, Anthony

    Software Agent Architecture for Consistency Management in Distributed Documents Anthony Finkelstein an account of an architecture for management of consistency relations between distributed documents. We of use of this system in a domain of software engineering documents. Keywords Consistency management, XML

  6. WELL-FORMEDNESS, CONSISTENCY AND COMPLETENESS OF GRAPHIC MODELS

    E-Print Network [OSTI]

    Zhu, Hong

    WELL-FORMEDNESS, CONSISTENCY AND COMPLETENESS OF GRAPHIC MODELS HONG ZHU Department of Computing@yahoo.com ABSTRACT This paper clarifies the notions of well-formedness, consistency and completeness of graphic languages, Well-formedness, Consistency constraints, Completeness constraints, Type systems, Formal

  7. BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders in the common goal of maximizing access to critical research.

    E-Print Network [OSTI]

    Campbell, A. Malcolm

    BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders

  8. Effect of process variables on the density and durability of the pellets made from high moisture corn stover

    SciTech Connect (OSTI)

    Jaya Shankar Tumuluru

    2014-03-01T23:59:59.000Z

    A flat die pellet mill was used to understand the effect of high levels of feedstock moisture content in the range of 28–38% (w.b.), with die rotational speeds of 40–60 Hz, and preheating temperatures of 30–110 °C on the pelleting characteristics of 4.8 mm screen size ground corn stover using an 8 mm pellet die. The physical properties of the pelletised biomass studied are: (a) pellet moisture content, (b) unit, bulk and tapped density, and (c) durability. Pelletisation experiments were conducted based on central composite design. Analysis of variance (ANOVA) indicated that feedstock moisture content influenced all of the physical properties at P < 0.001. Pellet moisture content decreased with increase in preheating temperature to about 110 °C and decreasing the feedstock moisture content to about 28% (w.b.). Response surface models developed for quality attributes with respect to process variables has adequately described the process with coefficient of determination (R2) values of >0.88. The other pellet quality attributes such as unit, bulk, tapped density, were maximised at feedstock moisture content of 30–33% (w.b.), die speeds of >50 Hz and preheating temperature of >90 °C. In case of durability a medium moisture content of 33–34% (w.b.) and preheating temperatures of >70 °C and higher die speeds >50 Hz resulted in high durable pellets. It can be concluded from the present study that feedstock moisture content, followed by preheating, and die rotational speed are the interacting process variables influencing pellet moisture content, unit, bulk and tapped density and durability.

  9. California Department of Fish and Wildlife Consistency Determination...

    Open Energy Info (EERE)

    search OpenEI Reference LibraryAdd to library Web Site: California Department of Fish and Wildlife Consistency Determination Webpage Abstract This website explains the...

  10. Consistency of robust optimization with application to portfolio ...

    E-Print Network [OSTI]

    Megiddo

    2010-09-26T23:59:59.000Z

    very general portfolio and risk constraints. Further, consistency will also carry ...... Quantitative Analysis, 42(3):621–656, 2007. [21] A. Kirsch. An Introduction to ...

  11. Substrate Moisture Content Effects on Growth and Shelf Life of Angelonia angustifolia

    E-Print Network [OSTI]

    Bingham, Alison

    2012-07-16T23:59:59.000Z

    [Impatiens walleriana (Hook.)], petunia, salvia [Salvia splendens Sellow (ex Roemer & J.A. Schultes)] and vinca [Catharanthus roseus (L.) G. Don.] for an extended period of time despite varying plant sizes with little to no runoff and wastage of water... moisture sensors and solenoid valves interfaced to an irrigation controller. When ? dropped below the set point, the controller opened solenoid valves and the impatiens, petunias, salvia, and vinca were irrigated and substrate water content was returned...

  12. Influence of Airflow on Laboratory Storage of High Moisture Corn Stover

    SciTech Connect (OSTI)

    Lynn M. Wendt; Ian J. Bonner; Amber N. Hoover; Rachel M. Emerson; William A. Smith

    2014-04-01T23:59:59.000Z

    Storing high moisture biomass for bioenergy use is a reality in many areas of the country where wet harvest conditions and environmental factors prevent dry storage from being feasible. Aerobic storage of high moisture biomass leads to microbial degradation and self-heating, but oxygen limitation can aid in material preservation. To understand the influence of oxygen presence on high moisture biomass (50 %, wet basis), three airflow rates were tested on corn stover stored in laboratory reactors. Temperature, carbon dioxide production, dry matter loss, chemical composition, fungal abundance, pH, and organic acids were used to monitor the effects of airflow on storage conditions. The results of this work indicate that oxygen availability impacts both the duration of self-heating and the severity of dry matter loss. High airflow systems experienced the greatest initial rates of loss but a shortened microbially active period that limited total dry matter loss (19 %). Intermediate airflow had improved preservation in short-term storage compared to high airflow systems but accumulated the greatest dry matter loss over time (up to 27 %) as a result of an extended microbially active period. Low airflow systems displayed the best performance with the lowest rates of loss and total loss (10 %) in storage at 50 days. Total structural sugar levels of the stored material were preserved, although glucan enrichment and xylan loss were documented in the high and intermediate flow conditions. By understanding the role of oxygen availability on biomass storage performance, the requirements for high moisture storage solutions may begin to be experimentally defined.

  13. Biochemical changes in the proteins of sorghum grain during moisture reconstitution

    E-Print Network [OSTI]

    Billings, Toby Jackson

    1972-01-01T23:59:59.000Z

    MICROORGANISM INHABITING SORGHUM GRAIN AFTER RECONSTITUTION Medium Growth Acid Gas MR VP Nitrate Reduction Mannose yes yes no Glucose yes yes no Sucrose yes no no Gal actos e yes yes no Mannitol Starch Maltose yes yes yes no no yes...BIOCHEMICAL CHANGES IN THE PROTEINS OF SORGHUM GRAIN DURING MOISTURE RECONSTITUTION A Thesis by TOBY JACKSON BILLINGS Submitted to the Graduate College of the Texas A&M University in partial fulfillment of the requirement for the degree...

  14. Energy Balance Partitioning and Net Radiation Controls on Soil Moisture – Precipitation Feedbacks

    E-Print Network [OSTI]

    Jones, Aubrey R.; Brunsell, Nathaniel A.

    2009-01-14T23:59:59.000Z

    in determining regional weather and climate. Although this idea has been widely accepted, an under- standing of the physical processes and the scales over which these interactions occur remains somewhat limited. Improving the current understanding... of these relationships has important implications for increasing predictability of local weather and climate. According to Barros and Hwu (Barros and Hwu 2002), the basis of studies on land–atmosphere interactions is the idea that moisture and energy gradients across a...

  15. Effect of external stress on moisture diffusion in an epoxy resin and its composite material 

    E-Print Network [OSTI]

    Henson, Michael Chamberlain

    1986-01-01T23:59:59.000Z

    ) Michael Chamberlain Henson, B. S. , Texas A&N University Chairman of Advisory Comnittee: Dr. Y. Weitsman The effects of stress on moisture diffusion in a graphite epoxy composrte material have been studied experimentally by examining the correspondrng... diffusion at all stress levels while the graphite epoxy generated results indicative of Non-Fickean, . concentration dependent diffusion at different levels of stress. The external stress affected both materials in a similar manner, causing...

  16. Effect of an external stress on moisture diffusion in composite materials 

    E-Print Network [OSTI]

    Porth, Edward John

    1983-01-01T23:59:59.000Z

    . . 49 LIST OF FIGURES Figure Page Cure Cycle for Hexcel F155 Graphite/Epoxy. . Cure Cycle for Narmco M329-7 Adhesive. Final Configuration of the Graphite/Epoxy and Stainless Steel Tensile Coupons. Load Frame Used to Stress Tensile Coupons During...-ply laminates absorbed more moisture than unidirectional laminates. However, it was also noted that cross-ply laminates are less compact than unidirectional laminates. Gillat and Broutman [5] subjected bidirectional graphite/epoxy laminates to external loads...

  17. Moisture performance of sealed attics in the mixed-humid climate

    SciTech Connect (OSTI)

    Boudreaux, Philip R [ORNL; Pallin, Simon B [ORNL; Jackson, Roderick K [ORNL

    2013-12-01T23:59:59.000Z

    Oak Ridge National Laboratory studied 8 homes in the mixed-humid climate, 4 with vented attics and 4 with sealed attics. ORNL wanted to understand the moisture performance of the sealed attic and how it affected the interior environment. We found that the attic and interior of sealed attic homes were more humid than the attic and interior observed in vented attic homes. This is due to the lack of ventilation in the sealed attic. Historically attics have been vented to dehumidify the attic and interior of the home. A sealed attic design greatly reduces the venting potential and thus this drying pathway and can cause elevated interior moisture over a vented attic home. Despite the elevated attic and interior moisture in the sealed attic homes, so far no mold or material degradation has been found. The roof sheathing moisture content has stayed below 20%, indicating low potential for material degradation. Also the relative humidity at the roof sheathing has stayed within the ASHRAE 160 design criteria except for a short time during the 2011/2012 winter. This was due to a combination of the sealed attic design (minimal venting to the outside) and the duct work not being operated in the attic which usually provides a dehumidification pathway. It was also found that when the humidity was controlled using the HVAC system, it resulted in 7% more cooling energy consumption. In the mixed-humid climate this reduces the cost effectiveness of the sealed attic design as a solution for bringing ducts into a semi-conditioned space. Because of this we are recommending the other alternatives be used to bringing ducts into the conditioned space in both new construction and retrofit work in the mixed-humid climate.

  18. Preliminary non-destructive assessment of moisture content, hydration and dielectric properties of Portland cement concrete

    E-Print Network [OSTI]

    Avelar Lezama, Ivan

    2007-04-25T23:59:59.000Z

    PRELIMINARY NON-DESTRUCTIVE ASSESSMENT OF MOISTURE CONTENT, HYDRATION AND DIELECTRIC PROPERTIES OF PORTLAND CEMENT CONCRETE A Thesis by IVAN AVELAR LEZAMA Submitted to the Office of Graduate Studies of Texas A... AND DIELECTRIC PROPERTIES OF PORTLAND CEMENT CONCRETE A Thesis by IVAN AVELAR LEZAMA Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE...

  19. Size reduction of high- and low-moisture corn stalks by linear knife grid system

    SciTech Connect (OSTI)

    Womac, A.R. [University of Tennessee; Igathinathane, C. [Mississippi State University (MSU); Sokhansanj, Shahabaddine [ORNL; Narayan, S. [First American Scientific Co.

    2009-04-01T23:59:59.000Z

    High- and low-moisture corn stalks were tested using a linear knife grid size reduction device developed for first-stage size reduction. The device was used in conjunction with a universal test machine that quantified shearing stress and energy characteristics for forcing a bed of corn stalks through a grid of sharp knives. No published engineering performance data for corn stover with similar devices are available to optimize performance; however, commercial knife grid systems exist for forage size reduction. From the force displacement data, mean and maximum ultimate shear stresses, cumulative and peak mass-based cutting energies for corn stalks, and mean new surface area-based cutting energies were determined from 4 5 refill runs at two moisture contents (78.8% and 11.3% wet basis), three knife grid spacings (25.4, 50.8, and 101.6 mm), and three bed depths (50.8, 101.6, and 152.4 mm). In general, the results indicated that peak failure load, ultimate shear stress, and cutting energy values varied directly with bed depth and inversely with knife grid spacing. Mean separation analysis established that high- and low-moisture conditions and bed depths 101.6 mm did not differ significantly (P < 0.05) for ultimate stress and cutting energy values, but knife grid spacing were significantly different. Linear knife grid cutting energy requirements for both moisture conditions of corn stalks were much smaller than reported cutting energy requirements. Ultimate shear stress and cutting energy results of this research should aid the engineering design of commercial scale linear knife gird size reduction equipment for various biomass feedstocks.

  20. Tertiary nitrogen heterocyclic material to reduce moisture-induced damage in asphalt-aggregate mixtures

    DOE Patents [OSTI]

    Plancher, Henry (Laramie, WY); Petersen, Joseph C. (Laramie, WY)

    1982-01-01T23:59:59.000Z

    Asphalt-aggregate roads crack when subjected to freezing and thawing cycles. Herein, the useful life of asphalts are substantially improved by a minor amount of a moisture damage inhibiting agent selected from compounds having a pyridine moiety, including acid salts of such compounds. A shale oil fraction may serve as the source of the improving agent and may simply be blended with conventional petroleum asphalts.

  1. Consistent inventory control Elvira Marie B. Aske,, and Sigurd Skogestad,

    E-Print Network [OSTI]

    Skogestad, Sigurd

    Consistent inventory control Elvira Marie B. Aske,, and Sigurd Skogestad, Department of Chemical Engineering, Norwegian University of Science and Technology, Trondheim, Norway Abstract Inventory or material of this paper is to propose the more general local- consistency rule for evaluating inventory control systems

  2. Consistent Query Answers in Inconsistent Databases Marcelo Arenas

    E-Print Network [OSTI]

    Bertossi, Leopoldo

    is proved as well. 1 Introduction Integrity constraints capture an important normative aspect of every of consistent answer in a relational database that may violate given integrity constraints. This notion are consistent with the integrity constraints and which are not. In this pa­ per, we provide a logical

  3. Quantitative verification of ab initio self-consistent laser theory

    E-Print Network [OSTI]

    Stone, A. Douglas

    ­1564 (1998). 6. O. Painter, R. K. Lee, A. Scherer, A. Yariv, J. D. O'Brien, P. D. Dapkus, and I. Kim, "TwoQuantitative verification of ab initio self-consistent laser theory Li Ge,1 Robert J. Tandy,1 A¨ureci, A. D. Stone, and B. Collier, "Self-consistent multimode lasing theory for complex or random lasing

  4. Harmonic superspace formalism and the consistent chiral anomaly

    SciTech Connect (OSTI)

    Li, W.

    1986-08-01T23:59:59.000Z

    The harmonic superspace formalism has been used to construct the consistent chiral anomaly in N = 1, d = 6 supersymmetric Yang-Mills thoery. The expressions of the gauge anomaly ..delta../sub s//sup phi/ and of the supersymmetric anomaly ..delta../sub SUSY//sup phi/ are given together with the consistent condition. 7 refs.

  5. Market-Consistent Valuation of Long-Term Insurance Contracts -

    E-Print Network [OSTI]

    Pfeifer, Holger

    Market-Consistent Valuation of Long-Term Insurance Contracts - Valuation Framework-Consistent Valuation of Long-Term Insurance Contracts Valuation Framework and Application to German Private Health with respect to prot sharing rules and premium adjustment mechanisms. In contrast to the valuation of life

  6. Dynamic Consistency in Process Algebra: From Paradigm to ACP

    E-Print Network [OSTI]

    de Vink, Erik

    Dynamic Consistency in Process Algebra: From Paradigm to ACP S. Andovaa, , L.P.J. Groenewegenb , E: branching bisimulation, collaboration, dynamic consistency, dynamic constraint, Paradigm, process algebra coupled, but structured aggregation of components, is connected to the compu- tational rigor of process

  7. Impact of Hillslope-Scale Organization of Topography, Soil Moisture, Soil Temperature, and Vegetation on Modeling Surface Microwave Radiation Emission

    E-Print Network [OSTI]

    Flores, Alejandro N.

    Microwave radiometry will emerge as an important tool for global remote sensing of near-surface soil moisture in the coming decade. In this modeling study, we find that hillslope-scale topography (tens of meters) influences ...

  8. Dynamic Analysis of Moisture Transport Through Walls and Associated Cooling Loads in the Hot/Humid Climate of Florianopolis, Brazil

    E-Print Network [OSTI]

    Mendes, N.; Winkelmann, F. C.; Lamberts, R.; Philippi, P. C.; Da Cunha, Neto, J. A. B.

    1996-01-01T23:59:59.000Z

    We describe the use of a dynamic model of combined heat and mass transfer to analyze the effects on cooling loads of transient moisture storage and transport through walls with porous building materials, under varying boundary conditions...

  9. A wireless soil moisture smart sensor web using physics-based optimal control: Concept and initial demonstrations

    E-Print Network [OSTI]

    Moghaddam, Mahta

    This paper introduces a new concept for a smart wireless sensor web technology for optimal measurements of surface-to-depth profiles of soil moisture using in-situ sensors. The objective of the technology, supported by the ...

  10. Precipitation and soil impacts on partitioning of subsurface moisture in Avena barbata: Observations from a greenhouse experiment

    SciTech Connect (OSTI)

    Salve, R.; Torn, M.S.

    2011-03-01T23:59:59.000Z

    The primary objective of this study was to assess the impact of two grassland soils and precipitation regimes on soil-moisture dynamics. We set up an experiment in a greenhouse, and monitored soil moisture dynamics in mesocosms planted with Avena barbata, an annual species found in California grasslands. By repeating the precipitation input at regular intervals, we were able to observe plant manipulation of soil moisture during well-defined periods during the growing season. We found that the amount of water partitioned to evapotranspiration, seepage, and soil storage varied among different growth stages. Further, both soil type and precipitation regimes had a significant impact on redistributing soil moisture. Whereas in the low-precipitation treatments most water was released to the atmosphere as evapotranspiration, major losses from the high-precipitation treatment occurred as gravity drainage. Observations from this study emphasize the importance of understanding intra-seasonal relationships between vegetation, soil, and water.

  11. Moisture Flux Convergence in Regional and Global Climate Models: Implications for Droughts in the Southwestern United States Under Climate Change

    SciTech Connect (OSTI)

    Gao, Yanhong; Leung, Lai-Yung R.; Salathe, E.; Dominguez, Francina; Nijssen, Bart; Lettenmaier, D. P.

    2012-05-10T23:59:59.000Z

    The water cycle of the southwestern United States (SW) is dominated by winter storms that maintain a positive annual net precipitation. Analysis of the control and future climate from four pairs of regional and global climate models (RCMs and GCMs) shows that the RCMs simulate a higher fraction of transient eddy moisture fluxes because the hydrodynamic instabilities associated with flow over complex terrain are better resolved. Under global warming, this enables the RCMs to capture the response of transient eddies to increased atmospheric stability that allows more moisture to converge on the windward side of the mountains by blocking. As a result, RCMs simulate enhanced transient eddy moisture convergence in the SW compared to GCMs, although both robustly simulate drying due to enhanced moisture divergence by the divergent mean flow in a warmer climate. This enhanced convergence leads to reduced susceptibility to hydrological change in the RCMs compared to GCMs.

  12. Moisture and temperature effects on curvature of anti-symmetric cross-ply graphite/epoxy laminates 

    E-Print Network [OSTI]

    Lott, Randall Stephen

    1980-01-01T23:59:59.000Z

    MOISTURE AND TEMPERATURE EFFECTS ON CURVATURE OF ANTI-SYMMETRIC CROSS-PLY GRAPHITE/EPOXY LAMINATES A Thesis by RANDALL STEPHEN LOTT Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement... for the degree of MASTER OF SCIENCE December 1980 Major Subject: Mechanical Engineering MOISTURE AND TEMPERATURE EFFECTS ON CURVATURE OF ANTI-SYMMETRIC CROSS-PLY GRAPHITE/EPOXY LAMINATES A Thesis by RANDALL STEPHEN LOTT Approved as to style and content...

  13. IMPACTS OF SOIL MOISTURE VARIABILITY ON CONVECTIVE PRECIPITATION IN THE CENTRAL PLAINS THROUGH LAND-ATMOSPHERE FEEDBACKS

    E-Print Network [OSTI]

    Jones, Aubrey R.

    2008-08-20T23:59:59.000Z

    of cummulative precipitation for a) FC b) 50FC c) WP ............ 31 Figure 4. Precipitation summed over the domain for the 12 day period for each model run............................................................................................................................ 66 Figure 17. Scatter plots of soil moisture versus Bowen ratio (top) a) FC b) 50FC c) WP and soil moisture versus net radiation (bottom) d) FC e) 50FC f) WP for the 4 km runs...

  14. Consistency Testing of the IRDF-2002 Dosimetry Cross Section Library

    SciTech Connect (OSTI)

    Griffin, P.J. [Nuclear Technologies Department, Sandia National Laboratories, Albuquerque, NM 87185-1146 (United States)

    2005-05-24T23:59:59.000Z

    The new IRDF-2002 dosimetry cross-section library was completed by the IAEA in January 2004. A rigorous process was followed in the selection of the recommended dosimetry cross sections. The cross-section selection was followed with a consistency testing. This paper reports on the results of the consistency testing. All candidate selections passed the acceptance testing criteria and the library release is pending. Observations are made on areas that need improvement in the cross sections and in the scope of the consistency testing.

  15. Emergent noncommutative gravity from a consistent deformation of gauge theory

    SciTech Connect (OSTI)

    Cortese, Ignacio; Garcia, J Antonio [Departamento de Fisica de Altas Energias, Instituto de Ciencias Nucleares, Universidad Nacional Autonoma de Mexico, Apartado Postal 70-543, Mexico D. F. 04510 (Mexico)

    2010-05-15T23:59:59.000Z

    Starting from a standard noncommutative gauge theory and using the Seiberg-Witten map, we propose a new version of a noncommutative gravity. We use consistent deformation theory starting from a free gauge action and gauging a killing symmetry of the background metric to construct a deformation of the gauge theory that we can relate with gravity. The result of this consistent deformation of the gauge theory is nonpolynomial in A{sub {mu}.} From here we can construct a version of noncommutative gravity that is simpler than previous attempts. Our proposal is consistent and is not plagued with the problems of other approaches like twist symmetries or gauging other groups.

  16. Consistent blind protein structure generation from NMR chemical shift data

    E-Print Network [OSTI]

    Baker, David

    Consistent blind protein structure generation from NMR chemical shift data Yang Shen*, Oliver Lange been successfully applied in a blind manner to nine protein targets with molecular masses up to 15.4 k

  17. Data Structures for Generalised Arc Consistency for Extensional Constraints

    E-Print Network [OSTI]

    St Andrews, University of

    the extensional representation remains the most effective way to model a facet of a problem it is essential and structured problems. 2 Background The finite-domain constraint satisfaction problem (CSP) consists of

  18. Using XML to Build Consistency Rules for Distributed Specifications

    E-Print Network [OSTI]

    Finkelstein, Anthony

    Using XML to Build Consistency Rules for Distributed Specifications Andrea Zisman Wolfgang Emmerich)20 76794413 a.zisman@soi.city.ac.uk {w.emmerich | a.finkelstein}@cs.ucl.ac.uk ABSTRACT The work presented

  19. Flexible Consistency Checking Christian Nentwich, Wolfgang Emmerich, Anthony Finkelstein

    E-Print Network [OSTI]

    Finkelstein, Anthony

    Flexible Consistency Checking Christian Nentwich, Wolfgang Emmerich, Anthony Finkelstein Department of Computer Science University College London Gower Street, London, WC1E 6BT UK {c.nentwich,w.emmerich

  20. Consistent Kaluza-Klein truncations via exceptional field theory

    E-Print Network [OSTI]

    Hohm, Olaf

    We present the generalized Scherk-Schwarz reduction ansatz for the full supersymmetric exceptional field theory in terms of group valued twist matrices subject to consistency equations. With this ansatz the field equations ...

  1. Self-consistent resummation scheme in scalar QED

    SciTech Connect (OSTI)

    Carrington, M.E. (Physics Department, University of Winnipeg, 515 Portage Avenue, Winnipeg, Manitoba, R3B 2E9 (Canada))

    1993-10-15T23:59:59.000Z

    In this paper we derive a resummation scheme that may be useful in the calculation of finite temperature processes that involve infrared-divergent diagrams. We discuss the inclusion of self-consistent vertices in calculations of diagrams with very soft external momenta. We work with scalar QED and show that the use of self-consistent vertices in the infrared limit of the retarded photon polarization tensor is equivalent to the resummation of dominant diagrams. To lowest order in an expansion about the parameter that is to be determined self-consistently, we find that the result is independent of this parameter and equal to the expression obtained with uncorrected lines and vertices. The motivation for this work is the hope that it will be possible to use this technique to perform self-consistent calculations beyond leading order.

  2. Time consistency and risk averse dynamic decision models ...

    E-Print Network [OSTI]

    2013-05-02T23:59:59.000Z

    sistent models as we provide practitioners with an intuitive economic inter- pretation for the ... ning and financial engineering problems. Based on ... consistency is shown to be one basic requirement to get suitable optimal de- cisions, in ...

  3. The EIS process consists of several steps, each with

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

    EIS process consists of several steps, each with opportunities for you to get involved. BPA follows these six steps for EISs on projects, plans and policies. 1. Notice of Intent...

  4. Consistent description of kinetics and hydrodynamics of dusty plasma

    SciTech Connect (OSTI)

    Markiv, B. [Institute for Condensed Matter Physics of the National Academy of Sciences of Ukraine, 1 Svientsitskii St., 79011 Lviv (Ukraine)] [Institute for Condensed Matter Physics of the National Academy of Sciences of Ukraine, 1 Svientsitskii St., 79011 Lviv (Ukraine); Tokarchuk, M. [Institute for Condensed Matter Physics of the National Academy of Sciences of Ukraine, 1 Svientsitskii St., 79011 Lviv (Ukraine) [Institute for Condensed Matter Physics of the National Academy of Sciences of Ukraine, 1 Svientsitskii St., 79011 Lviv (Ukraine); National University “Lviv Polytechnic,” 12 Bandera St., 79013 Lviv (Ukraine)

    2014-02-15T23:59:59.000Z

    A consistent statistical description of kinetics and hydrodynamics of dusty plasma is proposed based on the Zubarev nonequilibrium statistical operator method. For the case of partial dynamics, the nonequilibrium statistical operator and the generalized transport equations for a consistent description of kinetics of dust particles and hydrodynamics of electrons, ions, and neutral atoms are obtained. In the approximation of weakly nonequilibrium process, a spectrum of collective excitations of dusty plasma is investigated in the hydrodynamic limit.

  5. Multiple choice of gauge generators and consistency of interactions

    E-Print Network [OSTI]

    S. L. Lyakhovich; A. A. Sharapov

    2014-08-07T23:59:59.000Z

    It is usually assumed that any consistent interaction either deforms or retains the gauge symmetries of the corresponding free theory. We propose a simple model where an obvious irreducible gauge symmetry does not survive an interaction, while the interaction is consistent as it preserves the number of physical degrees of freedom. The model turns out admitting a less obvious reducible set of gauge generators which is compatible with the interaction and smooth in coupling constant. Possible application to gravity models is discussed.

  6. Flexible Ultra Moisture Barrier Film for Thin-Film Photovoltaic Applications

    SciTech Connect (OSTI)

    David M. Dean

    2012-10-30T23:59:59.000Z

    Flexible Thin-film photovoltaic (TFPV) is a low cost alternative to incumbent c-Si PV products as it requires less volume of costly semiconductor materials and it can potentially reduce installation cost. Among the TFPV options, copper indium gallium diselenide (CIGS) has the highest efficiency and is believed to be one of the most attractive candidates to achieve PV cost reduction. However, CIGS cells are very moisture sensitive and require module water vapor transmission rate (WVTR) of less than 1x10-4 gram of water per square meter per day (g-H2O/m2/day). Successful development and commercialization of flexible transparent ultra moisture barrier film is the key to enable flexible CIGS TFPV products, and thus enable ultimate PV cost reduction. At DuPont, we have demonstrated at lab scale that we can successfully make polymer-based flexible transparent ultra moisture barrier film by depositing alumina on polymer films using atomic layer deposition (ALD) technology. The layer by layer ALD approach results in uniform and amorphous structure which effectively reduces pinhole density of the inorganic coating on the polymer, and thus allow the fabrication of flexible barrier film with WVTR of 10-5 g-H2O/m2/day. Currently ALD is a time-consuming process suitable only for high-value, relatively small substrates. To successfully commercialize the ALD-on-plastic technology for the PV industry, there is the need to scale up this technology and improve throughput. The goal of this contract work was to build a prototype demonstrating that the ALD technology could be scaled-up for commercial use. Unfortunately, the prototype failed to produce an ultra-barrier film by the close of the project.

  7. Moisture effects in low-slope roofs: Drying rates after water addition with various vapor retarders

    SciTech Connect (OSTI)

    Pedersen, C.R. [Technical Univ. of Denmark, Lyngby (Denmark); Petrie, T.W. [Marquette Univ., Milwaukee, WI (United States). Dept. of Mechanical Engineering; Courville, G.E.; Desjarlais, A.O.; Childs, P.W.; Wilkes, K.E. [Oak Ridge National Lab., TN (United States)

    1992-10-01T23:59:59.000Z

    Tests have been conducted in the Large Scale Climate Simulator (LSCS) of the US. Building Envelope Research Center at the Oak Ridge National Laboratory (ORNL) to investigate downward drying rates of various unvented, low-slope roof systems. A secondary objective was to study heat flow patterns so as to understand how to control latent heat effects on impermeable heat flux transducers. Nine test sections were tested simultaneously. The sections had a p deck above fibrous-glass insulation and were examples of cold-deck systems. These five sections had various vapor retarder systems on a gypsum board ceiling below the insulation. The other four sections had a lightweight insulating concrete deck below expanded polystyrene insulation and the same vapor retarder systems, and were examples of warm-deck systems. The cold-deck systems had materials that were relatively permeable to water vapor, while the materials in the warm-deck systems were less permeable. All test sections were topped by an impermeable roofing membrane. The test sections were instrumented with thermocouples between all layers and with small heat flux transducers at the bottom and top of the fibrous-glass insulation and in the middle of the expanded polystyrene insulation. Two different kinds of moisture probes were used to qualitatively monitor the movement of the moisture. The heat flux measurements showed that heat conduction dominates the system using impermeable insulation materials, with only a slight increase due to increased thermal conductivity of wet expanded polystyrene. There was significant transfer of latent heat in the test sections with permeable insulation, causing the peak heat fluxes to increase by as much as a factor of two. With temperatures imposed that are typical of summer days, latent heat transfer associated with condensation and evaporation of moisture in the test sections was measured to be as important as the heat transfer by conduction.

  8. International H2O Project (IHOP) 2002: Datasets Related to Atmospheric Moisture and Rainfall Prediction

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Schanot, Allen [IHOP 2002 PI; Friesen, Dick [IHOP 2002 PI

    IHOP 2002 was a field experiment that took place over the Southern Great Plains of the United States from 13 May to 25 June 2002. The chief aim of IHOP_2002 was improved characterization of the four-dimensional (4-D) distribution of water vapor and its application to improving the understanding and prediction of convection. The region was an optimal location due to existing experimental and operational facilities, strong variability in moisture, and active convection [copied from http://www.eol.ucar.edu/projects/ihop/]. The project's master list of data identifies 146 publicly accessible datasets.

  9. Cavitation controlled acoustic probe for fabric spot cleaning and moisture monitoring

    DOE Patents [OSTI]

    Sheen, Shuh-Haw (Naperville, IL); Chien, Hual-Te (Naperville, IL); Raptis, Apostolos C. (Downers Grove, IL)

    1997-01-01T23:59:59.000Z

    A method and apparatus are provided for monitoring a fabric. An acoustic probe generates acoustic waves relative to the fabric. An acoustic sensor, such as an accelerometer is coupled to the acoustic probe for generating a signal representative of cavitation activity in the fabric. The generated cavitation activity representative signal is processed to indicate moisture content of the fabric. A feature of the invention is a feedback control signal is generated responsive to the generated cavitation activity representative signal. The feedback control signal can be used to control the energy level of the generated acoustic waves and to control the application of a cleaning solution to the fabric.

  10. The effect of soil moisture levels on evapotranspiration from cotton and grain sorghum

    E-Print Network [OSTI]

    Schneider, Arland David

    1964-01-01T23:59:59.000Z

    measured value of soil t moisture. Substituting these values into Equations (I), (2) and (3) gave the following three equations: SM =be ct t SM =bK t t SM = d ? b log (t+c ) t (5) (6) The next logical step would have been to evaluate... as several atmospheres pressure which is sufficient tc move water to the leaves of even the tallest trees. The flew cf water can be governed by either the rate at which it is extracted from the soil or the rate at which it moves through the plants...

  11. Responses of bitterweed (Hymenoxys odorata) to 2, 4-D in relation to soil moisture

    E-Print Network [OSTI]

    Sultemeier, George Wayne

    1961-01-01T23:59:59.000Z

    aoistme for shoat three weehs battee syrayfsg with 2, ~ oa iTass 7. Taboos clay lhsdaD clay Ososa clay Valesa clog Valera else' shallow yhase Irioa alar Ceyrsssed 16. 3 1702 2$og sSoae ylents ia this sell asterisk sai yro4aee4 seek... and herbicidal aotion at time of spraying on ths several clay soil types. Mater is universally a component of soils, although ths amounts present may wary from hygrosopio to a quantity sufficient to saturate the soil. FLaM moisture samples msy be oompared...

  12. Surface soil moisture estimation with the electrically scanning microwave radiometer (ESMR)

    E-Print Network [OSTI]

    Theis, Sidney Wayne

    1979-01-01T23:59:59.000Z

    that is important in determining the ability of a plant to uptake water and that determines the state of saturation of a soil. Matric potential is very important for crop modeling and runoff prediction. Roe et al. (1971) observed that the emissivity of a mooth... that were approximately 15 to 20 cm high. For an area covered with thick turfted grass to a height of 20 cm, Barton (1978) obtained a poor relationship between soil moisture and emissivity for both the ESHR and a 2. 65-cm radiometer. The ESHR response...

  13. Phase relationship equation for moisture induced shrink and swell of soils

    E-Print Network [OSTI]

    Hoffmann, Stacey Bruemmer

    1997-01-01T23:59:59.000Z

    to the w moisture content prior to swell, a = air void coefficient equal to the ratio of air volume change (AV?) to the initial air volume (V?), n(1-S) = ratio of VA to the initial total volume (Vr). The shrinkage form of PREMISS (1. 2), also derived... in Chapter VI, is: AV hw = Sn ? (t + a, ?j r where a? = the air void constant equal to the ratio of dV? to the change in water volume (dV~). The parameters S, n and w are readily obtained from soil samples. Means of obtaining the change im water...

  14. "Constraint consistency" at all orders in Cosmological perturbation theory

    E-Print Network [OSTI]

    Nandi, Debottam

    2015-01-01T23:59:59.000Z

    We study the equivalence of two - order-by-order Einstein's equation and Reduced action - approaches to cosmological perturbation theory at all orders for different models of inflation. We point out a crucial consistency check which we refer to as "Constraint consistency" that needs to be satisfied. We propose a quick and efficient method to check the consistency for any model including modified gravity models. Our analysis points out an important feature which is crucial for inflationary model building i.e., all `constraint' inconsistent models have higher order Ostrogradsky's instabilities but the reverse is not true. In other words, one can have models with constraint lapse function and shift vector, though it may have Ostrogradsky's instabilities. We also obtain the single variable equation for non-canonical scalar field in the limit of power-law inflation for the second-order perturbed variables.

  15. "Constraint consistency" at all orders in Cosmological perturbation theory

    E-Print Network [OSTI]

    Debottam Nandi; S. Shankaranarayanan

    2015-02-12T23:59:59.000Z

    We study the equivalence of two - order-by-order Einstein's equation and Reduced action - approaches to cosmological perturbation theory at all orders for different models of inflation. We point out a crucial consistency check which we refer to as "Constraint consistency" that needs to be satisfied. We propose a quick and efficient method to check the consistency for any model including modified gravity models. Our analysis points out an important feature which is crucial for inflationary model building i.e., all `constraint' inconsistent models have higher order Ostrogradsky's instabilities but the reverse is not true. In other words, one can have models with constraint lapse function and shift vector, though it may have Ostrogradsky's instabilities. We also obtain the single variable equation for non-canonical scalar field in the limit of power-law inflation for the second-order perturbed variables.

  16. Charge Lattices and Consistency of 6D Supergravity

    E-Print Network [OSTI]

    Nathan Seiberg; Washington Taylor

    2011-06-05T23:59:59.000Z

    We extend the known consistency conditions on the low-energy theory of six-dimensional N = 1 supergravity. We review some facts about the theory of two-form gauge fields and conclude that the charge lattice Gamma for such a theory has to be self-dual. The Green-Schwarz anomaly cancellation conditions in the supergravity theory determine a sublattice of Gamma. The condition that this sublattice can be extended to a self-dual lattice Gamma leads to a strong constraint on theories that otherwise appear to be self-consistent.

  17. Self-consistent quasiparticle model for quark-gluon plasma

    E-Print Network [OSTI]

    Vishnu M. Bannur

    2006-09-19T23:59:59.000Z

    Here we present a self-consistent quasi-particle model for quark-gluon plasma and apply it to explain the non-ideal behaviour seen in lattice simulations. The basic idea, borrowed from electrodynamic plasma, is that the gluons acquire mass as it propagates through plasma due to collective effects and is approximately equal to the plasma frequency. The statistical mechanics and thermodynamics of such a system is studied by treating it as an ideal gas of massive gluons. Since mass or plasma frequency depends on density, which itself is a thermodynamic quantity, the whole problem need to be solved self-consistently.

  18. Consistency test of neutrinoless double beta decay with one isotope

    E-Print Network [OSTI]

    Michael Duerr; Manfred Lindner; Kai Zuber

    2011-11-17T23:59:59.000Z

    We discuss a consistency test which makes it possible to discriminate unknown nuclear background lines from neutrinoless double beta decay with only one isotope. By considering both the transition to the ground state and to the first excited $0^+$ state, a sufficiently large detector can reveal if neutrinoless double beta decay or some other nuclear physics process is at work. Such a detector could therefore simultaneously provide a consistency test for a certain range of Majorana masses and be sensitive to lower values of the effective Majorana mass.

  19. Consistency test of neutrinoless double beta decay with one isotope

    SciTech Connect (OSTI)

    Duerr, Michael; Lindner, Manfred [Max-Planck-Institut fuer Kernphysik, Postfach 10 39 80, 69029 Heidelberg (Germany); Zuber, Kai [Technical University Dresden, Institut fuer Kern- und Teilchenphysik, 01069 Dresden (Germany)

    2011-11-01T23:59:59.000Z

    We discuss a consistency test which makes it possible to discriminate unknown nuclear background lines from neutrinoless double beta decay with only one isotope. By considering both the transition to the ground state and to the first excited 0{sup +} state, a sufficiently large detector can reveal if neutrinoless double beta decay or some other nuclear physics process is at work. Such a detector could therefore simultaneously provide a consistency test for a certain range of Majorana masses and be sensitive to lower values of the effective Majorana mass .

  20. BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders in the common goal of maximizing access to critical research.

    E-Print Network [OSTI]

    Meyer, Gretchen A.

    BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders in the biological, ecological, and environmental sciences. BioOne provides a sustainable online platform for over

  1. BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders in the common goal of maximizing access to

    E-Print Network [OSTI]

    BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders in the biological, ecological, and environmental sciences. BioOne provides a sustainable online platform for over

  2. BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders in the common goal of maximizing access to critical research.

    E-Print Network [OSTI]

    Hoddle, Mark S.

    BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders. BioOne provides a sustainable online platform for over 170 journals and books published by nonprofit

  3. BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders in the common goal of maximizing access to critical research.

    E-Print Network [OSTI]

    Borsdorf, Axel

    BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research fundersOne provides a sustainable online platform for over 170 journals and books published by nonprofit societies

  4. BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders in the common goal of maximizing access to critical research.

    E-Print Network [OSTI]

    Hoddle, Mark S.

    BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders, ecological, and environmental sciences. BioOne provides a sustainable online platform for over 170 journals

  5. BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders in the common goal of maximizing access to critical research.

    E-Print Network [OSTI]

    Takada, Shoji

    #12;BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders a sustainable online platform for over 170 journals and books published by nonprofit societies, associations

  6. BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders in the common goal of maximizing access to critical research.

    E-Print Network [OSTI]

    Borsdorf, Axel

    BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders research in the biological, ecological, and environmental sciences. BioOne provides a sustainable online

  7. BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders in the common goal of maximizing access to critical research.

    E-Print Network [OSTI]

    Wysocki, Vicki H.

    BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders a sustainable online platform for over 170 journals and books published by nonprofit societies, associations

  8. BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders in the common goal of maximizing access to

    E-Print Network [OSTI]

    Douches, David S.

    BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders. BioOne provides a sustainable online platform for over 170 journals and books published by nonprofit

  9. BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders in the common goal of maximizing access to

    E-Print Network [OSTI]

    Rajakaruna, Nishanta

    BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders research in the biological, ecological, and environmental sciences. BioOne provides a sustainable online

  10. Building America Webinar: High Performance Enclosure Strategies: Part II, New Construction- August 13, 2014- Moisture Monitoring Results in an R-40 Wall

    Broader source: Energy.gov [DOE]

    This presentation, Moisture Monitoring Results in an R-40 Wall, was presented at the Building America webinar, High Performance Enclosure Strategies, Part II, on August 13, 2014.

  11. A nuclear Frechet space consisting of C -functions and

    E-Print Network [OSTI]

    Vogt, Dietmar

    A nuclear Fr´echet space consisting of C -functions and failing the bounded approximation property Dietmar Vogt Abstract An easy and transparent example is given of a nuclear Fre´echet space failing of Grothendieck whether every nuclear Fr´echet space has the bounded approximation property was open for quite

  12. Self-consistent quasi-particle model for relativistic plasma

    E-Print Network [OSTI]

    Vishnu M. Bannur

    2006-02-24T23:59:59.000Z

    Relativistic plasma with radiation at thermodynamic equilibrium is ageneral system of interest in astrophysics and high energy physics. We develop a new self-consistent quasi-particle model for such a system to take account of collective behaviour of plasma andthermodynamic properties are derived. It is applied to electrodynamic plasma and quark gluon plasma and compared with existing results.

  13. Dynamic Path Consistency for Spatial Reasoning Lamia Belouaer, Maroua Bouzid

    E-Print Network [OSTI]

    Boyer, Edmond

    Ontology of a given environment. In order to evaluate the performance of our dynamic path consistency method, we reactive planning and path finding. Let us consider the example of an accident at a nuclear plant. Generally if something goes wrong there are always planned paths from any position in the nuclear plant

  14. Error detection through consistency checking Peng Gong* Lan Mu#

    E-Print Network [OSTI]

    Silver, Whendee

    Error detection through consistency checking Peng Gong* Lan Mu# *Center for Assessment & Monitoring Hall, University of California, Berkeley, Berkeley, CA 94720-3110 gong@nature.berkeley.edu mulan, accessibility, and timeliness as recorded in the lineage data (Chen and Gong, 1998). Spatial error refers

  15. On thermodynamically consistent schemes for phase field equations

    E-Print Network [OSTI]

    Fife, Paul

    and at the phase change front. A somewhat different approach of Charach and Zemel [2] combines bal- ance equationsOn thermodynamically consistent schemes for phase field equations C. Charach and P. C. Fife thermodynamics. The principal applications are to the solidification of a pure material and of a binary alloy

  16. Effective Collaboration and Consistency Management in Business Process Modeling

    E-Print Network [OSTI]

    Czarnecki, Krzysztof

    Effective Collaboration and Consistency Management in Business Process Modeling Co-Chairs: Moises they are lost. Business Process Modeling (BPM) is a promising approach to enable agility in business process of experts. Business analysts gather requirements and create high-level process models. Solution architects

  17. AVMON: Optimal and Scalable Discovery of Consistent Availability Monitoring

    E-Print Network [OSTI]

    Gupta, Indranil

    AVMON: Optimal and Scalable Discovery of Consistent Availability Monitoring Overlays--This paper proposes to build overlays that help in the monitoring of long-term availability histories of such an availability monitoring overlay. We motivate six significant goals for these problems--the first three goals

  18. Self-consistent methods in nuclear structure physics

    SciTech Connect (OSTI)

    Dobaczewski, J. [Warsaw Univ. (Poland). Inst. of Theoretical Physics][Oak Ridge National Lab., TN (United States). Joint Inst. for Heavy Ion Research]|[Univ. of Tennessee, Knoxville, TN (United States). Dept. of Physics

    1997-11-01T23:59:59.000Z

    The authors present a very brief description of the Hartree Fock method in nuclear structure physics, discuss the numerical methods used to solve the self-consistent equations, and analyze the precision and convergence properties of solutions. As an application, they present results pertaining to quadrupole moments and single-particle quadrupole polarizations in superdeformed nuclei with A {approximately} 60.

  19. Making Sequential Consistency Practical in TitaniumPractical in Titanium

    E-Print Network [OSTI]

    California at Berkeley, University of

    Making Sequential Consistency Practical in TitaniumPractical in Titanium Amir Kamil, Jimmy Su, and Katherine Yelick, y , Titanium Group http://titanium.cs.berkeley.edu U.C. Berkeley November 15 2005November by another threadthread · Titanium, Java, UPC, and many other languages do not provide sequentiallanguages do

  20. Summary of residential environmental issues and program consistency

    SciTech Connect (OSTI)

    Baechler, M C

    1989-05-01T23:59:59.000Z

    The Northwest Power Planning Act authorizes the Bonneville Power Administration to acquire all necessary energy resources to serve Northwest utilities choosing to acquire power from the agency and to give conservation the highest priority in responding to the demand for electricity. To meet this mandate, the agency has established residential conservation programs for weatherizing existing homes, building new energy-efficient homes, and promoting energy-efficient appliances. Pacific Northwest Laboratory prepared this report to compare and contrast the environmental requirements and issues involving Bonneville's residential conservation programs. The key environmental concern confronting each of the programs with measures aimed at reducing air leakage rates in houses (both new and existing) is indoor air quality (IAQ). This report reviews the similarity and consistency of the programs' approach to IAQ, their impacts, program features, mitigation techniques, and new information about IAQ and other potential environmental issues confronting the programs. The information is intended for use in comparing and contrasting how environmental features mesh with other program features, checking consistency across programs and determining whether it makes sense for programs to be consistent, determining consistency between programs, and providing information to aid program planning in light of potential environmental issues and new information. 31 refs.

  1. Consistent Data Assimilation of Isotopes: 242Pu and 105Pd

    SciTech Connect (OSTI)

    G. Palmiotti; H. Hiruta; M. Salvatores

    2012-09-01T23:59:59.000Z

    In this annual report we illustrate the methodology of the consistent data assimilation that allows to use the information coming from integral experiments for improving the basic nuclear parameters used in cross section evaluation. A series of integral experiments are analyzed using the EMPIRE evaluated files for 242Pu and 105Pd. In particular irradiation experiments (PROFIL-1 and -2, TRAPU-1, -2 and -3) provide information about capture cross sections, and a critical configuration, COSMO, where fission spectral indexes were measured, provides information about fission cross section. The observed discrepancies between calculated and experimental results are used in conjunction with the computed sensitivity coefficients and covariance matrix for nuclear parameters in a consistent data assimilation. The results obtained by the consistent data assimilation indicate that not so large modifications on some key identified nuclear parameters allow to obtain reasonable C/E. However, for some parameters such variations are outside the range of 1 s of their initial standard deviation. This can indicate a possible conflict between differential measurements (used to calculate the initial standard deviations) and the integral measurements used in the statistical data adjustment. Moreover, an inconsistency between the C/E of two sets of irradiation experiments (PROFIL and TRAPU) is observed for 242Pu. This is the end of this project funded by the Nuclear Physics Program of the DOE Office of Science. We can indicate that a proof of principle has been demonstrated for a few isotopes for this innovative methodology. However, we are still far from having explored all the possibilities and made this methodology to be considered proved and robust. In particular many issues are worth further investigation: • Non-linear effects • Flexibility of nuclear parameters in describing cross sections • Multi-isotope consistent assimilation • Consistency between differential and integral experiments

  2. Radius of influence for a cosmic-ray soil moisture probe : theory and Monte Carlo simulations.

    SciTech Connect (OSTI)

    Desilets, Darin

    2011-02-01T23:59:59.000Z

    The lateral footprint of a cosmic-ray soil moisture probe was determined using diffusion theory and neutron transport simulations. The footprint is radial and can be described by a single parameter, an e-folding length that is closely related to the slowing down length in air. In our work the slowing down length is defined as the crow-flight distance traveled by a neutron from nuclear emission as a fast neutron to detection at a lower energy threshold defined by the detector. Here the footprint is defined as the area encompassed by two e-fold distances, i.e. the area from which 86% of the recorded neutrons originate. The slowing down length is approximately 150 m at sea level for neutrons detected over a wide range of energies - from 10{sup 0} to 10{sup 5} eV. Both theory and simulations indicate that the slowing down length is inversely proportional to air density and linearly proportional to the height of the sensor above the ground for heights up to 100 m. Simulations suggest that the radius of influence for neutrons >1 eV is only slightly influenced by soil moisture content, and depends weakly on the energy sensitivity of the neutron detector. Good agreement between the theoretical slowing down length in air and the simulated slowing down length near the air/ground interface support the conclusion that the footprint is determined mainly by the neutron scattering properties of air.

  3. Investigation of factors influencing infrared roof moisture surveys using a mathematical model

    SciTech Connect (OSTI)

    Childs, K.W.; Courville, G.E.; Childs, P.W.

    1983-01-01T23:59:59.000Z

    In low sloped roofing systems using porous insulation, the presence of water can significantly degrade thermal performance. Because of the different thermal characteristics of wet and dry insulation, there is often a surface temperature differential between areas of wet and dry insulation. Under the right circumstances, the areas of wet insulation can be detected by means of infrared sensing techniques. To better define the conditions under which infrared techniques can distinguish between areas of wet and dry insulation, a mathematical model was developed. This model is a one-dimensional, transient heat transfer model of a roofing system. The model considers conduction through the roof, insolation, radiant exchange between roof and sky, convective heat transfer between the roof and air, and the influence of moisture trapped in insulation. For one particular roof system, a parametric study was undertaken using this model to determine the influence of moisture content, outside air temperature, wind speed, insolation, sky temperature, and other factors on the roof surface temperature. Preliminary recommendations for employing thermal sensing techniques to locate wet insulation are developed.

  4. Investigation of factors influencing infrared roof moisture surveys using a mathematical model

    SciTech Connect (OSTI)

    Childs, K.W.; Courville, G.E.; Childs, P.W.

    1984-01-01T23:59:59.000Z

    In low sloped roofing systems using porous insulation, the presence of water can significantly degrade thermal performance. Because of the different thermal characteristics of wet and dry insulation, there is often a surface temperature differential between areas of wet and dry insulation. Under the right circumstances, the areas of wet insulation can be detected by means of infrared sensing techniques. To better define the conditions under which infrared techniques can distinguish between areas of wet and dry insulation, a mathematical model was developed. This model is a one-dimensional, transient heat transfer model of a roofing system. The model considers conduction through the roof, insulation, radiant exchange between roof and sky, convective heat transfer between the roof and air, and the influence of moisture trapped in insulation. For one particular roof system, a parametric study was undertaken using this model to determine the influence of moisture content, outside air temperature, wind speed, insulation, sky temperature, and other factors on the roof surface temperature. Preliminary recommendations for employing thermal sensing techniques to locate wet insulation are developed. 11 references, 12 figures.

  5. In situ electrokinetic control of moisture and nutrients in unsaturated soils

    SciTech Connect (OSTI)

    Lindgren, E.R.; Brady, P.V.

    1994-12-31T23:59:59.000Z

    Many DOE facilities have unsaturated soils contaminated with metals and organic solvents. Because of the large volumes, in situ remediation is often the most economically attractive remediation technique. The success of many in situ treatment technologies depends critically on the degree to which the movement of water and desired ions can be engineered in the vadose zone. Bioremediation efforts in the vadose zone are limited by the ability to provide moisture and nutrients to contaminant-metabolizing microorganisms. An in situ electrokinetic remediation process has been developed at Sandia National Laboratories (SNL) for use in unsaturated soils, and is presently undergoing field demonstration. The electrokinetic process is not limited by low soil permeabilities and, therefore, provides a level of control not achievable by hydraulic means. Moisture is added to the subsurface in a controlled fashion such that the field capacity is never exceeded, preventing the unwanted mobilization of dissolved contaminants by saturated wetting fronts. The Sandia electrokinetic process can potentially transport both water and nutrients for bioremediation efforts and is compatible with vapor phase in situ techniques such as bioventing. The approach should as bioventing. The approach should lend itself to the directed transport of biodegradable chelating agents and complexed metals from contaminated soils.

  6. Researching Complex Heat, Air and Moisture Interactions for a Wide-Range of Building Envelope Systems and Environmental Loads

    SciTech Connect (OSTI)

    Karagiozis, A.N.

    2007-05-15T23:59:59.000Z

    This document serves as the final report documenting work completed by Oak Ridge National Laboratory (ORNL) and the Fraunhofer Institute in Building Physics (Holzkirchen, Germany) under an international CRADA No. 0575 with Fraunhofer Institute of Bauphysics of the Federal Republic of Germany for Researching Complex Heat, Air and Moisture Interactions for a Wide Range of Building Envelope Systems and Environmental Loads. This CRADA required a multi-faceted approach to building envelope research that included a moisture engineering approach by blending extensive material property analysis, laboratory system and sub-system thermal and moisture testing, and advanced moisture analysis prediction performance. The Participant's Institute for Building physics (IBP) and the Contractor's Buildings Technology Center (BTC) identified potential research projects and activities capable of accelerating and advancing the development of innovative, low energy and durable building envelope systems in diverse climates. This allowed a major leverage of the limited resources available to ORNL to execute the required Department of Energy (DOE) directives in the area of moisture engineering. A joint working group (ORNL and Fraunhofer IBP) was assembled and a research plan was executed from May 2000 to May 2005. A number of key deliverables were produced such as adoption of North American loading into the WUFI-software. in addition the ORNL Weather File Analyzer was created and this has been used to address environmental loading for a variety of US climates. At least 4 papers have been co-written with the CRADA partners, and a chapter in the ASTM Manual 40 on Moisture Analysis and Condensation Control. All deliverables and goals were met and exceeded making this collaboration a success to all parties involves.

  7. Formalization of the data flow diagram rules for consistency check

    E-Print Network [OSTI]

    Ibrahim, Rosziati; 10.5121/ijsea.2010.1406

    2010-01-01T23:59:59.000Z

    In system development life cycle (SDLC), a system model can be developed using Data Flow Diagram (DFD). DFD is graphical diagrams for specifying, constructing and visualizing the model of a system. DFD is used in defining the requirements in a graphical view. In this paper, we focus on DFD and its rules for drawing and defining the diagrams. We then formalize these rules and develop the tool based on the formalized rules. The formalized rules for consistency check between the diagrams are used in developing the tool. This is to ensure the syntax for drawing the diagrams is correct and strictly followed. The tool automates the process of manual consistency check between data flow diagrams.

  8. Branch dependence in the "consistent histories" approach to quantum mechanics

    E-Print Network [OSTI]

    Thomas Müller

    2006-11-12T23:59:59.000Z

    In the consistent histories formalism one specifies a family of histories as an exhaustive set of pairwise exclusive descriptions of the dynamics of a quantum system. We define branching families of histories, which strike a middle ground between the two available mathematically precise definitions of families of histories, viz., product families and Isham's history projector operator formalism. The former are too narrow for applications, and the latter's generality comes at a certain cost, barring an intuitive reading of the ``histories''. Branching families retain the intuitiveness of product families, they allow for the interpretation of a history's weight as a probability, and they allow one to distinguish two kinds of coarse-graining, leading to reconsidering the motivation for the consistency condition.

  9. Noncommuting Electric Fields and Algebraic Consistency in Noncommutative Gauge theories

    E-Print Network [OSTI]

    Rabin Banerjee

    2003-03-20T23:59:59.000Z

    We show that noncommuting electric fields occur naturally in $\\theta$-expanded noncommutative gauge theories. Using this noncommutativity, which is field dependent, and a hamiltonian generalisation of the Seiberg-Witten Map, the algebraic consistency in the lagrangian and hamiltonian formulations of these theories, is established. A comparison of results in different descriptions shows that this generalised map acts as canonical transformation in the physical subspace only. Finally, we apply the hamiltonian formulation to derive the gauge symmetries of the action.

  10. A soil moisture budget analysis of Texas using basic climatic data while assuming a possible warming trend across the state

    E-Print Network [OSTI]

    Bjornson, Brian Matthew

    1990-01-01T23:59:59.000Z

    of the slope (dashed lines) of the regression line of precipitation on mean temperature for the Lower Valley. 35. Isopleths of MTRANGE (in 'F) for Texas during August. 71 36. Percentage of monthly soil moisture (SM) for the High Plains for a O'F (control... are significant at the 95% confidence interval. 74 37. Percentage of monthly soil moisture (SM) for the High Plains for a O'F (control), I' F, 2'F, 3'F, and 4'F increase in the mean annual temperature of Texas. Mean monthly temperatures increase non...

  11. Flexible Residential Test Facility: Impact of Infiltration and Ventilation on Measured Cooling Season Energy and Moisture Levels

    SciTech Connect (OSTI)

    Parker, D.; Kono, J.; Vieira, R.; Fairey, P.; Sherwin, J.; Withers, C.; Hoak, D.; Beal, D.

    2014-05-01T23:59:59.000Z

    Air infiltration and ventilation in residential buildings is a very large part of the heating loads, but empirical data regarding the impact on space cooling has been lacking. Moreover, there has been little data on how building tightness might relate to building interior moisture levels in homes in a hot and humid climate. To address this need, BA-PIRC has conducted research to assess the moisture and cooling load impacts of airtightness and mechanical ventilation in two identical laboratory homes in the hot-humid climate over the cooling season.

  12. Simulation of soil moisture and evapotranspiration in a soil profile during the 1999 MAP-Riviera Campaign Hydrology and Earth System Sciences, 7(6), 903919 (2003) EGU

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    -Riviera Campaign 903 Hydrology and Earth System Sciences, 7(6), 903919 (2003) © EGU Simulation of soil moisture and evapotranspiration scheme in hydrological models. This study presents the validation of soil moisture soil plot at the edge of a corn field. The hydrological model PREVAH was driven using three

  13. An integral-balance nonlinear model to simulate changes in soil moisture, groundwater and surface runoff dynamics at the hillslope scale

    E-Print Network [OSTI]

    Jay, Laurent O.

    An integral-balance nonlinear model to simulate changes in soil moisture, groundwater and surface-state integral-balance model for soil moisture and groundwater dynamics. Development of the model was motivated. Ã? 2014 Elsevier Ltd. All rights reserved. 1. Introduction Recent studies on the modeling

  14. Infrared self-consistent solutions of bispinor QED3

    E-Print Network [OSTI]

    Tomasz Radozycki

    2013-01-25T23:59:59.000Z

    Quantum electrodynamics in three dimensions in the bispinor formulation is considered. It is shown that the Dyson-Schwinger equations for fermion and boson propagators may be self-consistently solved in the infrared domain if on uses the Salam's vertex function. The parameters defining the behavior of the propagators are found numerically for different values of coupling constant and gauge parameter. For weak coupling the approximated analytical solutions are obtained. The renormalized gauge boson propagator (transverse part) is shown in the infrared domain to be practically gauge independent.

  15. Discrete KP equation with self-consistent sources

    E-Print Network [OSTI]

    Adam Doliwa; Runliang Lin

    2014-04-05T23:59:59.000Z

    We show that the discrete Kadomtsev-Petviashvili (KP) equation with sources obtained recently by the "source generalization" method can be incorporated into the squared eigenfunction symmetry extension procedure. Moreover, using the known correspondence between Darboux-type transformations and additional independent variables, we demonstrate that the equation with sources can be derived from Hirota's discrete KP equations but in a space of higher dimension. In this way we uncover the origin of the source terms as coming from multidimensional consistency of the Hirota system itself.

  16. Multi-writer consistency conditions for shared memory objects

    E-Print Network [OSTI]

    Shao, Cheng

    2008-10-10T23:59:59.000Z

    system composed of n application processes, p0;:::;pn¡1, and some number of shared objects. In this thesis, we focus on read/write registers. Such a register, x, supports two operations, read and write, which can be executed by the processes. Each... and responses, we denote by ji the subsequence of containing all the invocations and responses performed by process pi. Deflnition 2 A sequence of invocations and responses is a schedule if, for each i, 0 • i < n, the following hold: † ji consists...

  17. Multi-writer consistency conditions for shared memory objects

    E-Print Network [OSTI]

    Shao, Cheng

    2009-05-15T23:59:59.000Z

    system composed of n application processes, p0;:::;pn?1, and some number of shared objects. In this thesis, we focus on read/write registers. Such a register, x, supports two operations, read and write, which can be executed by the processes. Each... and responses, we denote by ji the subsequence of containing all the invocations and responses performed by process pi. Deflnition 2 A sequence of invocations and responses is a schedule if, for each i, 0 ? i < n, the following hold: ? ji consists...

  18. Self-consistent input-output formulation of quantum feedback

    SciTech Connect (OSTI)

    Yanagisawa, M. [Department of Engineering, The Australian National University, Canberra, ACT 0200 (Australia); Hope, J. J. [Department of Quantum Science, The Australian National University, Canberra, ACT 0200 (Australia)

    2010-12-15T23:59:59.000Z

    A simple method of analyzing quantum feedback circuits is presented. The classical analysis of feedback circuits can be generalized to apply to quantum systems by mapping the field operators of various outputs to other inputs via the standard input-output formalism. Unfortunately, this has led to unphysical results such as the violation of the Heisenberg uncertainty principle for in-loop fields. This paper shows that this general approach can be redeemed by ensuring a self-consistently Hermitian Hamiltonian. The calculations are based on a noncommutative calculus of operator derivatives. A full description of several examples of quantum linear and nonlinear feedback for optical systems is presented.

  19. Consistent perturbative light front formulation of Yang-Mills theories

    SciTech Connect (OSTI)

    Morara, M.; Soldati, R. [Dipartimento di Fisica 'A. Righi', Universita di Bologna (Italy); McCartor, G. [Department of Physics, SMU, Dallas, Texas (United States)

    1999-11-22T23:59:59.000Z

    It is shown how to obtain the consistent light front form quantization of a non-Abelian pure Yang-Mills theory (gluondynamics) in the framework of the standard perturbative approach. After a short review of the previous attempts in the light cone gauge A{sub -}=0, it is explained how the difficulties can be overcome after turning to the anti light cone gauge A{sub +}=0. In particular, the generating functional of the renormalized Green's functions turns out to be the same as in the conventional instant form approach, leading to the Mandelstam-Leibbrandt prescription for the free gluon propagator.

  20. Quark mean-field theory and consistency with nuclear matter

    SciTech Connect (OSTI)

    Dey, J.; Tomio, L. (Instituto de Fisica Teorica, Universidade Estadual Paulista, Rua Pamplona 145, 01405 Sao Paulo (Brazil)); Dey, M. (Department of Physics, Maulana Azad College, Calcutta 700 013 (India)); Frederico, T. (Institute for Nuclear Theory, Department of Physics, FM-15, University of Washington, Seattle, Washington (USA))

    1991-11-01T23:59:59.000Z

    1/{ital N}{sub {ital c}} expansion in QCD (with {ital N}{sub {ital c}} the number of colors) suggests using a potential from meson sector (e.g., Richardson) for baryons. For light quarks a {sigma} field has to be introduced to ensure chiral symmetry breaking ({chi}SB). It is found that nuclear matter properties can be used to pin down the {chi}SB modeling. All masses, {ital M}{sub {ital N}}, {ital m}{sub {sigma}}, {ital m}{sub {omega}}, are found to scale with density. The equations are solved self-consistently.

  1. Acoustic wave (AW) based moisture sensor for use with corrosive gases

    DOE Patents [OSTI]

    Pfeifer, K.B.; Frye, G.C.; Schneider, T.W.

    1996-11-05T23:59:59.000Z

    Moisture corrosive gas stream is measured as a function of the difference in resonant frequencies between two acoustic wave (AW) devices, each with a film which accepts at least one of the components of the gas stream. One AW is located in the gas stream while the other is located outside the gas stream but in the same thermal environment. In one embodiment, the film is a hydrophilic material such as SiO{sub 2}. In another embodiment, the SiO{sub 2} is covered with another film which is impermeable to the corrosive gas, such that the AW device in the gas stream measures only the water vapor. In yet another embodiment, the film comprises polyethylene oxide which is hydrophobic and measures only the partial pressure of the corrosive gas. Other embodiments allow for compensation of drift in the system. 8 figs.

  2. Hygric Redistribution in Insulated Assemblies: Retrofitting Residential Envelopes Without Creating Moisture Issues

    SciTech Connect (OSTI)

    Smegal, J.; Lstiburek, J.

    2013-01-01T23:59:59.000Z

    The Building America program has recognized that most of the current housing stock is in need of energy related retrofits. One of the best ways of reducing the space conditioning energy consumption is to improve the thermal performance of the enclosure by adding exterior board foam insulation. This report quantifies the amount of water that can become trapped in the drainage cavity of typical wall systems, and measures the effect of water trapped in the drainage cavity on the moisture content of the sheathing. This study also attempts to explain the discrepancy between hygrothermal simulations and field performance of low permeance, low R-value exterior insulation (e.g. 3/4-in. foil faced polyisocyanurate) in cold climates.

  3. Test Plan to Evaluate the Relationship Among IAQ, Comfort, Moisture, and Ventilation in Humid Climates

    SciTech Connect (OSTI)

    Widder, Sarah H.; Martin, Eric

    2013-03-15T23:59:59.000Z

    This experimental plan describes research being conducted by Pacific Northwest National Laboratory (PNNL), in coordinatation with Florida Solar Energy Center (FSEC), Florida HERO, and Lawrence Berkeley National Laboratory (LBNL) to evaluate the impact of ventilation rate on interior moisture levels, temperature distributions, and indoor air contaminant concentrations. Specifically, the research team will measure concentrations of indoor air contaminants, ventilation system flow rates, energy consumption, and temperature and relative humidity in ten homes in Gainesville, FL to characterize indoor pollutant levels and energy consumption associated with the observed ventilation rates. PNNL and FSEC have collaboratively prepared this experimental test plan, which describes background and context for the proposed study; the experimental design; specific monitoring points, including monitoring equipment, and sampling frequency; key research questions and the associated data analysis approach; experimental logistics, including schedule, milestones, and team member contact information; and clearly identifies the roles and responsibilities of each team in support of project objectives.

  4. Sidewall tensiometer and method of determining soil moisture potential in below-grade earthen soil

    DOE Patents [OSTI]

    Hubbell, Joel M. (Idaho Falls, ID); Sisson, James B. (Idaho Falls, ID)

    2001-01-01T23:59:59.000Z

    A sidewall tensiometer to in situ determine below-grade soil moisture potential of earthen soil includes, a) a body adapted for insertion into an opening in earthen soil below grade, the body having lateral sidewalls; b) a laterally oriented porous material provided relative to the body lateral sidewalls, the laterally oriented porous material at least in part defining a fluid chamber within the body; c) a pressure a sensor in fluid communication with the fluid chamber; and d) sidewall engaging means for engaging a portion of a sidewall of an earth opening to laterally urge the porous material into hydraulic communication with earthen soil of another portion of the opening sidewall. Methods of taking tensiometric measurements are also disclosed.

  5. In situ changes in the moisture content of heated, welded tuff based on thermal neutron measurements

    SciTech Connect (OSTI)

    Ramirez, A.L.; Carlson, R.C.; Buscheck, T.A.

    1991-07-01T23:59:59.000Z

    Thermal neutron logs were collected to monitor changes in moisture content within a welded tuff rock mass heated from a borehole containing an electrical heater which remained energized for 195 days. Thermal neutron measurements were made in sampling boreholes before, during and after heating. The results generally corroborated our conceptual understanding of hydrothermal flow as well as most of the numerical modeling conducting for this study. Conceptual models have been developed in conjunction with the numerical model calculations to explain differences in the drying and re-wetting behavior above and below the heater. Numerical modeling indicated that the re-wetting of the dried-out zone was dominated by the binary diffusion of water vapor through fractures. Saturation gradients in the rock matrix resulted in relative humidity gradients which drove water vapor (primarily along fractures) back to the dried-out zone where it condensed along the fracture walls and was imbibed by the matrix. 4 refs., 28 figs.

  6. Self-consistent Green's functions with three-body forces

    E-Print Network [OSTI]

    Arianna Carbone

    2014-07-24T23:59:59.000Z

    The present thesis aims at studying the properties of symmetric nuclear and pure neutron matter from a Green's functions point of view, including two-body and three-body chiral forces. An extended self-consistent Green's function formalism is defined to consistently incorporate three-body forces in the many-body calculations. The effect of three-nucleon interactions is included via the construction of a dressed two-body density dependent force. This is obtained performing an average of the leading order three-body terms in the chiral effective field theory expansion. The dressed force corresponds to the use of an in-medium propagator in the average which takes into account the correlations characterizing the system at each stage of the many-body calculation. The total energy of the system is obtained by means of a modified Galitskii-Migdal-Koltun sumrule to correctly account for the effect of three-body forces. Microscopic as well as macroscopic properties of symmetric nuclear and pure neutron matter are analyzed in detailed.

  7. Self-consistent chemical model of partially ionized plasmas

    SciTech Connect (OSTI)

    Arkhipov, Yu. V.; Baimbetov, F. B.; Davletov, A. E. [Department of Physics, Kazakh National University, Tole Bi 96, Almaty 050012 (Kazakhstan)

    2011-01-15T23:59:59.000Z

    A simple renormalization theory of plasma particle interactions is proposed. It primarily stems from generic properties of equilibrium distribution functions and allows one to obtain the so-called generalized Poisson-Boltzmann equation for an effective interaction potential of two chosen particles in the presence of a third one. The same equation is then strictly derived from the Bogolyubov-Born-Green-Kirkwood-Yvon (BBGKY) hierarchy for equilibrium distribution functions in the pair correlation approximation. This enables one to construct a self-consistent chemical model of partially ionized plasmas, correctly accounting for the close interrelation of charged and neutral components thereof. Minimization of the system free energy provides ionization equilibrium and, thus, permits one to study the plasma composition in a wide range of its parameters. Unlike standard chemical models, the proposed one allows one to study the system correlation functions and thereby to obtain an equation of state which agrees well with exact results of quantum-mechanical activity expansions. It is shown that the plasma and neutral components are strongly interrelated, which results in the short-range order formation in the corresponding subsystem. The mathematical form of the results obtained enables one to both firmly establish this fact and to determine a characteristic length of the structure formation. Since the cornerstone of the proposed self-consistent chemical model of partially ionized plasmas is an effective pairwise interaction potential, it immediately provides quite an efficient calculation scheme not only for thermodynamical functions but for transport coefficients as well.

  8. Parton distributions based on a maximally consistent dataset

    E-Print Network [OSTI]

    Juan Rojo

    2014-09-10T23:59:59.000Z

    The choice of data that enters a global QCD analysis can have a substantial impact on the resulting parton distributions and their predictions for collider observables. One of the main reasons for this has to do with the possible presence of inconsistencies, either internal within an experiment or external between different experiments. In order to assess the robustness of the global fit, different definitions of a conservative PDF set, that is, a PDF set based on a maximally consistent dataset, have been introduced. However, these approaches are typically affected by theory biases in the selection of the dataset. In this contribution, after a brief overview of recent NNPDF developments, we propose a new, fully objective, definition of a conservative PDF set, based on the Bayesian reweighting approach. Using the new NNPDF3.0 framework, we produce various conservative sets, which turn out to be mutually in agreement within the respective PDF uncertainties, as well as with the global fit. We explore some of their implications for LHC phenomenology, finding also good consistency with the global fit result. These results provide a non-trivial validation test of the new NNPDF3.0 fitting methodology, and indicate that possible inconsistencies in the fitted dataset do not affect substantially the global fit PDFs.

  9. Evaluation of SMOS Retrievals of Soil Moisture over the Central United States with Currently Available In-situ Observations

    E-Print Network [OSTI]

    Robock, Alan

    SMOS retrievals by comparing them to in-situ soil moisture observations4 for the top 5 cm at several.01% of the total water on the planet [Prigent et al.,20 2005]. But soil water content is important for many reasons, such as agriculture. Soil water21 content also has an important influence on climate, as it determines

  10. Wall Design Redundancy for Improving the Moisture Performance of Building Cladding Systems in Hot-Humid Climates

    E-Print Network [OSTI]

    Graham, C. W.

    2000-01-01T23:59:59.000Z

    An investigation of approximately 4,000 buildings in the hot-humid climate locations of the United States where the potential for decay of hygroscopic building materials or corrosion of metals is moderate-to-severe found that redundant moisture...

  11. INDICATOR: LAKE ERIE ICE COVER Winter ice cover on Lake Erie affects the amount of heat and moisture transferred

    E-Print Network [OSTI]

    102 INDICATOR: LAKE ERIE ICE COVER Background Winter ice cover on Lake Erie affects the amount of heat and moisture transferred between the lake and the atmosphere. During winter, ice and snow can decrease the amount of light available below the ice surface for photosynthesis. In the absence of an ice

  12. Interactive effects of vegetation, soil moisture and bulk density on depth of burning of thick organic soils

    E-Print Network [OSTI]

    Benscoter, Brian W.

    5, Canada. D University of Alberta, Department of Renewable Resources, Edmonton, AB, T6G 2H1, Canada consumption. We experimentally altered soil moisture profiles of peat monoliths collected from several. Additional keywords: bog, boreal, carbon, fire, ground-layer fuels, peat, peatland, Sphagnum, smouldering

  13. Interactive effects of vegetation, soil moisture and bulk density on depth of burning of thick organic soils

    E-Print Network [OSTI]

    Turetsky, Merritt

    5, Canada. D University of Alberta, Department of Renewable Resources, Edmonton, AB, T6G 2H1, Canada consumption. We experimentally altered soil moisture profiles of peat monoliths collected from several. Additional keywords: bog, boreal, carbon, fire, ground-layer fuels, peat, peatland, smouldering, Sphagnum

  14. A dual-pass variational data assimilation framework for estimating soil moisture profiles from AMSR-E microwave

    E-Print Network [OSTI]

    influences the partitioning of surface available energy into sensible and latent heat fluxes and henceA dual-pass variational data assimilation framework for estimating soil moisture profiles from AMSR, we have designed a dual-pass assimilation (DP-En4DVar) framework to optimize the model state

  15. Real time detection of soil moisture and nitrates using on-board in-situ impedance spectroscopy

    E-Print Network [OSTI]

    Kumar, Ratnesh

    Real time detection of soil moisture and nitrates using on-board in-situ impedance spectroscopy across a pair of electrodes immersed in that medium. We make accurate measurements on soil impedance over multiple frequen- cies using an in-situ soil-sensor we have designed. The impedance values are then used

  16. SOURCE: UNIVERSITY OF CALIFORNIA PAVEMENT RESEARCH CENTER FIGURE 1 Moisture-induced stripping in asphalt treated base layer

    E-Print Network [OSTI]

    California at Berkeley, University of

    SOURCE: UNIVERSITY OF CALIFORNIA PAVEMENT RESEARCH CENTER FIGURE 1 Moisture-induced stripping in asphalt treated base layer PAVEMENT TECHNOLOGY UPDATE This Technology Transfer Program publication is provided by the University of California Pavement Research Center. The University of California Pavement

  17. 2392 IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, VOL. 41, NO. 10, OCTOBER 2003 Soil Moisture Mapping Using ESTAR Under

    E-Print Network [OSTI]

    2392 IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, VOL. 41, NO. 10, OCTOBER 2003 Soil of the entire region. Index Terms--Microwave, remote sensing, soil moisture. I. INTRODUCTION THE FUNDAMENTAL regional heat fluxes [15], and to validate distributed land surface models in order to study the scaling

  18. Soil animal responses to moisture availability are largely scale, not ecosystem dependent: insight from a cross-site

    E-Print Network [OSTI]

    Wall, Diana

    Soil animal responses to moisture availability are largely scale, not ecosystem dependent: insight Cruces, NM 88012, USA, 4 USDA ARS Grassland Soil and Water Research Laboratory, Temple, TX 76502, USA, 5 Abstract Climate change will result in reduced soil water availability in much of the world either due

  19. Detection of nitroesters and moisture in combustible cartridge case wall by indicator strips and instruments. Final report

    SciTech Connect (OSTI)

    Ho, C.H.; Moneyhun, J.H.; Agouridis, D.C.; Gayle, T.M.; Hurst, G.B.; Griest, W.H.

    1992-09-30T23:59:59.000Z

    Nitroester migration into the case wall from the propellant and moisture accumulation within the case have been identified as important internal and external (respectively) factors which contribute to the physical deterioration of combustible cartridge case (ccc) munitions. The latter factor also may hinder proper ignition of the ccc and cause incomplete combustion in firing. Visual indicators sensitive to these factors and affixed to ccc rounds would allow quality assurance specialists or gun crews in the field to rapidly determine the potential reliability of individual rounds. Previous work in this task identified chemistries suitable for the detection of nitroesters and moisture in the ccc wall. A version of the Griess reaction was modified for a dry colorimetric indicator which in the presence of nitroglycerin (NG) or diethyleneglycol dinitrate (DEGDN) generates a brilliant red color. Inorganic salts such as cupric chloride, which changes from brown to blue-green upon hydration, were suggested as promising visual indicators of moisture. This report describes the development and preliminary testing of prototype nitroester and moisture indicator strips, and the scoping of two instrumental techniques, infrared spectroscopy and electrical capacitance, which could lead to portable instruments for rapid and nondestructive testing of ccc in the field.

  20. Effects of cropping-system-related soil moisture and nutrient dynamics on the sustainability of semiarid dryland agriculture

    E-Print Network [OSTI]

    Norton, Jay B.

    Effects of cropping-system-related soil moisture and nutrient dynamics on the sustainability are to evaluate sustainability of conservation cropping systems in order to improve management approaches of semiarid dryland agriculture Project Summary We propose to investigate cropping-system-related soil

  1. A Pacific Moisture Conveyor Belt and Its Relationship to a Significant Precipitation Event in the Semiarid Southwestern United States

    E-Print Network [OSTI]

    Williams, Justin

    with the University of Wisconsin- Nonhydrostatic Modeling System, as well as analysis data, surface observations with different influence factors can be distinguished. 1) Close to the COL center, moist tropical air is overrun extraordinary cool season precipitation events in western North America to bands of enhanced moisture transport

  2. ., ~., t.o -., '-'~ Effect of moisture content on the composting of pig-manure sawdust litter disposed from the

    E-Print Network [OSTI]

    Tiquia-Arashiro, Sonia M.

    '- ., ~., t.o - ., '-'~ Effect of moisture content on the composting of pig-manure sawdust litter-situ composting, has been developed as one of the recommended methods in Hong Kong to treat pig waste. The system microbial biomass, which is similar to an immature compost. In order to improve the quality of the spent

  3. Investigations of Possible Low-Level Temperature and Moisture Anomalies During the AMIE Field Campaign on Manus Island

    SciTech Connect (OSTI)

    Long, CN; Holdridge, DJ

    2012-11-19T23:59:59.000Z

    This document discusses results stemming from the investigation of near-surface temperature and moisture “oddities” that were brought to light as part of the Atmospheric Radiation Measurement (ARM) Madden-Julian Oscillation (MJO) Investigation Experiment (AMIE), Dynamics of the Madden-Julian Oscillation (DYNAMO), and Cooperative Indian Ocean experiment on intraseasonal variability in the Year 2011 (CINDY2011) campaigns.

  4. Influence of radar frequency on the relationship between bare surface soil moisture vertical profile and radar backscatter

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    produced from Envisat ASAR and TerraSAR-X data, acquired over bare soils with in situ measurements heterogeneity into account in the backscatter model. Key words: SAR, AIEM, soil moisture profile, bare soil hal in the L, C, and X frequency bands, empirical and semi-empirical models are often calibrated using soil

  5. Advances in inherently conducting polymers

    SciTech Connect (OSTI)

    Aldissi, M.

    1987-09-01T23:59:59.000Z

    The discovery of polyacetylene as the prototype material led to extensive research on its synythesis and characterization. The techniques that emerged as the most important and promising ones are those that dealt with molecular orientation and that resulted in conductivities almost as high as that of copper. The study of dozens of other materials followed. Interest in conducting polymers stems from their nonclassical optical and electronic properties as well as their potential technological applications. However, some of the factors currently limiting their use are the lack of long-term stability and the need to develop conventional low-cost techniques for easy processing. Therefore, research was extended toward solving these problems, and progress has been recently made in that direction. The synthesis of new materials such as stable and easily processable alkylthiophenes, water-soluble polymers, and multicomponent systems, including copolymers and composites, constitutes an important step forward in the area of synthetic metals. However, a full understanding of materials chemistry and properties requires more work in the years to come. Although, few small-scale applications have proven to be successful, long-term stability and applicability tests are needed before their commercial use becomes reality.

  6. ER=EPR, GHZ, and the Consistency of Quantum Measurements

    E-Print Network [OSTI]

    Leonard Susskind

    2014-12-29T23:59:59.000Z

    This paper illustrates various aspects of the ER=EPR conjecture.It begins with a brief heuristic argument, using the Ryu-Takayanagi correspondence, for why entanglement between black holes implies the existence of Einstein-Rosen bridges. The main part of the paper addresses a fundamental question: Is ER=EPR consistent with the standard postulates of quantum mechanics? Naively it seems to lead to an inconsistency between observations made on entangled systems by different observers. The resolution of the paradox lies in the properties of multiple black holes, entangled in the Greenberger-Horne-Zeilinger pattern. The last part of the paper is about entanglement as a resource for quantum communication. ER=EPR provides a way to visualize protocols like quantum teleportation. In some sense teleportation takes place through the wormhole, but as usual, classical communication is necessary to complete the protocol.

  7. Consistent generation of magnetic fields in axion inflation models

    E-Print Network [OSTI]

    Fujita, Tomohiro; Tada, Yuichiro; Takeda, Naoyuki; Tashiro, Hiroyuki

    2015-01-01T23:59:59.000Z

    There has been a growing evidence for the existence of magnetic fields in the extra-galactic regions, while the attempt to associate their origin with the inflationary epoch alone has been found extremely challenging. We therefore take into account the consistent post-inflationary evolution of the magnetic fields that are originated from vacuum fluctuations during inflation. In the model of our interest, the electromagnetic (EM) field is coupled to a pseudo-scalar inflaton $\\phi$ through the characteristic term $\\phi F\\tilde F$, breaking the conformal invariance. This interaction dynamically breaks the parity and enables a continuous production of only one of the polarization states of the EM field through tachyonic instability. The produced magnetic fields are thus helical. We find that the dominant contribution to the observed magnetic fields in this model comes from the modes that leave the horizon near the end of inflation, further enhanced by the tachyonic instability right after the end of inflation. Th...

  8. First principles molecular dynamics without self-consistent field optimization

    E-Print Network [OSTI]

    Souvatzis, Petros

    2013-01-01T23:59:59.000Z

    We present a first principles molecular dynamics approach that is based on time-reversible ex- tended Lagrangian Born-Oppenheimer molecular dynamics [Phys. Rev. Lett. 100, 123004 (2008)] in the limit of vanishing self-consistent field optimization. The optimization-free dynamics keeps the computational cost to a minimum and typically provides molecular trajectories that closely follow the exact Born-Oppenheimer potential energy surface. Only one single diagonalization and Hamiltonian (or Fockian) costruction are required in each integration time step. The proposed dy- namics is derived for a general free-energy potential surface valid at finite electronic temperatures within hybrid density functional theory. Even in the event of irregular functional behavior that may cause a dynamical instability, the optimization-free limit represents an ideal starting guess for force calculations that may require a more elaborate iterative electronic ground state optimization. Our optimization-free dynamics thus represents ...

  9. Environment--Induced Decoherence, Classicality and Consistency of Quantum Histories

    E-Print Network [OSTI]

    Juan Pablo Paz; Wojciech Hubert Zurek

    1993-04-20T23:59:59.000Z

    We prove that for an open system, in the Markovian regime, it is always possible to construct an infinite number of non trivial sets of histories that exactly satisfy the probability sum rules. In spite of being perfectly consistent, these sets manifest a very non--classical behavior: they are quite unstable under the addition of an extra instant to the list of times defining the history. To eliminate this feature --whose implications for the interpretation of the formalism we discuss-- and to achieve the stability that characterizes the quasiclassical domain, it is necessary to separate the instants which define the history by time intervals significantly larger than the typical decoherence time. In this case environment induced superselection is very effective and the quasiclassical domain is characterized by histories constructed with ``pointer projectors''.

  10. Al{sub 2}O{sub 3} multi-density layer structure as a moisture permeation barrier deposited by radio frequency remote plasma atomic layer deposition

    SciTech Connect (OSTI)

    Jung, Hyunsoo [Division of Materials Science and Engineering, Hanyang University, Seoul 133-791 (Korea, Republic of); Samsung Display Co. Ltd., Tangjeong, Chungcheongnam-Do 336-741 (Korea, Republic of); Jeon, Heeyoung [Department of Nano-scale Semiconductor Engineering, Hanyang University, Seoul 133-791 (Korea, Republic of); Choi, Hagyoung; Ham, Giyul; Shin, Seokyoon [Division of Materials Science and Engineering, Hanyang University, Seoul 133-791 (Korea, Republic of); Jeon, Hyeongtag, E-mail: hjeon@hanyang.ac.kr [Division of Materials Science and Engineering, Hanyang University, Seoul 133-791 (Korea, Republic of); Department of Nano-scale Semiconductor Engineering, Hanyang University, Seoul 133-791 (Korea, Republic of)

    2014-02-21T23:59:59.000Z

    Al{sub 2}O{sub 3} films deposited by remote plasma atomic layer deposition have been used for thin film encapsulation of organic light emitting diode. In this study, a multi-density layer structure consisting of two Al{sub 2}O{sub 3} layers with different densities are deposited with different deposition conditions of O{sub 2} plasma reactant time. This structure improves moisture permeation barrier characteristics, as confirmed by a water vapor transmission rate (WVTR) test. The lowest WVTR of the multi-density layer structure was 4.7 × 10{sup ?5} gm{sup ?2} day{sup ?1}, which is one order of magnitude less than WVTR for the reference single-density Al{sub 2}O{sub 3} layer. This improvement is attributed to the location mismatch of paths for atmospheric gases, such as O{sub 2} and H{sub 2}O, in the film due to different densities in the layers. This mechanism is analyzed by high resolution transmission electron microscopy, elastic recoil detection, and angle resolved X-ray photoelectron spectroscopy. These results confirmed that the multi-density layer structure exhibits very good characteristics as an encapsulation layer via location mismatch of paths for H{sub 2}O and O{sub 2} between the two layers.

  11. Towards consistent Electroweak Precision Data constraints in the SMEFT

    E-Print Network [OSTI]

    Laure Berthier; Michael Trott

    2015-05-06T23:59:59.000Z

    We discuss the impact of many previously neglected effects of higher dimensional operators when fitting to Electroweak Precision data (EWPD) in the Standard Model Effective Field Theory (SMEFT). We calculate the general case of $2 \\rightarrow 2$ fermion scattering in the SMEFT to order $\\mathcal{O}(\\bar{v}_T^2/\\Lambda^2)$ valid on and off the $Z$ pole, in the massless fermion limit. We demonstrate that previously neglected corrections scale as $\\Gamma_Z M_Z/\\bar{v}_T^2$ in the partial widths extracted from measured cross sections at LEPI, compared to the leading effect of dimension six operators in anomalous $Z$ couplings. Further, constraints on leading effects of anomalous $Z$ couplings are also modified by neglected perturbative corrections and dimension eight operators. We perform a minimal EWPD fit to illustrate the size of the error these corrections induce, when bounding leading effects. These considerations relax bounds compared to a naive leading order analysis, and show that constraints that rise above the percent level are subject to substantial theoretical uncertanties. We also argue that renormalization group running global constraints expressed through $\\chi^2$ functions to a common scale, and then minimizing and performing a global fit of all data allows more consistent constraints to be obtained in the SMEFT.

  12. Multi-wavelength constraints on the inflationary consistency relation

    E-Print Network [OSTI]

    Meerburg, P Daniel; Hadzhiyska, Boryana; Meyers, Joel

    2015-01-01T23:59:59.000Z

    We present the first attempt to use a combination of CMB, LIGO, and PPTA data to constrain both the tilt and the running of primordial tensor power spectrum through constraints on the gravitational wave energy density generated in the early universe. Combining measurements at different cosmological scales highlights how complementary data can be used to test the predictions of early universe models including the inflationary consistency relation. Current data prefers a slightly positive tilt ($n_t = 0.13^{+0.54}_{-0.75}$) and a negative running ($n_{t, {\\rm run}} < -0.25$) for the tensor power spectrum spectrum. Interestingly, the addition of direct gravitational wave detector data puts strong bounds on the tensor-to-scalar ratio $r < 0.2 $ since the large positive tensor tilt preferred by the Planck temperature power spectrum is no longer allowed. We comment on possible effects of a large positive tilt on the background expansion and show that depending on the assumptions regarding the UV cutoff ($k_{\\...

  13. IMPROVING CONSISTENCY OF PERFORMANCE ASSESSMENTS IN THE DOE COMPLEX

    SciTech Connect (OSTI)

    Seitz, R; Elmer Wilhite, E

    2009-01-20T23:59:59.000Z

    The low-level waste (LLW) performance assessment (PA) process has been traditionally focused on disposal facilities at a few United States Department of Energy (USDOE) sites and commercial disposal facilities. In recent years, there has been a dramatic increase in the scope of the use of PA-like modeling approaches, involving multiple activities, facilities, contractors and regulators. The scope now includes, for example: (1) National Environmental Policy Act (NEPA) assessments, (2) CERCLA disposal cells, (3) Waste Determinations and High-Level Waste (HLW) Closure activities, (4) Potential on-site disposal of Transuranic (TRU) waste, and (5) In-situ decommissioning (including potential use of existing facilities for disposal). The dramatic increase in the variety of activities requiring more detailed modeling has resulted in a similar increase in the potential for inconsistency in approaches both at a site and complexwide scale. This paper includes a summary of USDOE Environmental Management (EM) sponsored initiatives and activities for improved consistency. New initiatives entitled the Performance Assessment Community of Practice and Performance Assessment Assistance Team are also introduced.

  14. Consistency of the tachyon warm inflationary universe models

    E-Print Network [OSTI]

    Zhang, Xiao-Min

    2013-01-01T23:59:59.000Z

    The consistency of the tachyon warm inflationary models is studied. We perform a linear stability analysis to give the slow-roll conditions characterized by the potential slow-roll (PSR) parameters for the existence of a tachyon warm inflationary attractor in the system. The PSR parameters in the tachyon warm inflationary models are new defined in our paper. The two cases of an exponential potential and an inverse power law potential are studied when the dissipative coefficient $\\Gamma=\\Gamma_0$ and $\\Gamma=\\Gamma(\\phi)$, respectively. A crucial condition for a workable tachyon warm inflationary model characterized by the Hubble slow-roll (HSR) parameter $\\epsilon_{_H}$ is obtained and extends to some other inflationary models. We can get a proper number of the e-folds in both cases of the tachyon warm inflation, contrary to some existing papers. We also point out that a constant dissipative coefficient $(\\Gamma=\\Gamma_0)$ is usually not a good assumption for a workable warm inflationary model.

  15. Consistency of the tachyon warm inflationary universe models

    E-Print Network [OSTI]

    Xiao-Min Zhang; Jian-Yang Zhu

    2014-01-31T23:59:59.000Z

    This study concerns the consistency of the tachyon warm inflationary models. A linear stability analysis is performed to find the slow-roll conditions, characterized by the potential slow-roll (PSR) parameters, for the existence of a tachyon warm inflationary attractor in the system. The PSR parameters in the tachyon warm inflationary models are redefined. Two cases, an exponential potential and an inverse power-law potential, are studied, when the dissipative coefficient $\\Gamma=\\Gamma_0$ and $\\Gamma=\\Gamma(\\phi)$, respectively. A crucial condition is obtained for a tachyon warm inflationary model characterized by the Hubble slow-roll (HSR) parameter $\\epsilon_{_H}$, and the condition is extendable to some other inflationary models as well. A proper number of e-folds is obtained in both cases of the tachyon warm inflation, in contrast to existing works. It is also found that a constant dissipative coefficient $(\\Gamma=\\Gamma_0)$ is usually not a suitable assumption for a warm inflationary model.

  16. First principles molecular dynamics without self-consistent field optimization

    SciTech Connect (OSTI)

    Souvatzis, Petros, E-mail: petros.souvatsiz@fysik.uu.se [Department of Physics and Astronomy, Division of Materials Theory, Uppsala University, Box 516, SE-75120 Uppsala (Sweden)] [Department of Physics and Astronomy, Division of Materials Theory, Uppsala University, Box 516, SE-75120 Uppsala (Sweden); Niklasson, Anders M. N., E-mail: amn@lanl.gov [Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)] [Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)

    2014-01-28T23:59:59.000Z

    We present a first principles molecular dynamics approach that is based on time-reversible extended Lagrangian Born-Oppenheimer molecular dynamics [A. M. N. Niklasson, Phys. Rev. Lett. 100, 123004 (2008)] in the limit of vanishing self-consistent field optimization. The optimization-free dynamics keeps the computational cost to a minimum and typically provides molecular trajectories that closely follow the exact Born-Oppenheimer potential energy surface. Only one single diagonalization and Hamiltonian (or Fockian) construction are required in each integration time step. The proposed dynamics is derived for a general free-energy potential surface valid at finite electronic temperatures within hybrid density functional theory. Even in the event of irregular functional behavior that may cause a dynamical instability, the optimization-free limit represents a natural starting guess for force calculations that may require a more elaborate iterative electronic ground state optimization. Our optimization-free dynamics thus represents a flexible theoretical framework for a broad and general class of ab initio molecular dynamics simulations.

  17. Towards consistent Electroweak Precision Data constraints in the SMEFT

    E-Print Network [OSTI]

    Laure Berthier; Michael Trott

    2015-02-09T23:59:59.000Z

    We discuss the impact of many previously neglected effects of higher dimensional operators when fitting to Electroweak Precision data (EWPD) in the Standard Model Effective Field Theory (SMEFT). We calculate the general case of $2 \\rightarrow 2$ fermion scattering in the SMEFT to order $\\mathcal{O}(\\bar{v}_T^2/\\Lambda^2)$ valid on and off the $Z$ pole, in the massless fermion limit. We demonstrate that previously neglected corrections scale as $\\Gamma_Z M_Z/\\bar{v}_T^2$ in the partial widths extracted from measured cross sections at LEPI, compared to the leading effect of dimension six operators in anomalous $Z$ couplings. Further, constraints on leading effects of anomalous $Z$ couplings are also modified by neglected perturbative corrections and dimension eight operators. We perform a minimal EWPD fit to illustrate the size of the error these corrections induce, when bounding leading effects. These considerations relax bounds compared to a naive leading order analysis, and show that constraints that rise above the percent level are subject to substantial theoretical uncertanties. We also argue that renormalization group running global constraints expressed through $\\chi^2$ functions to a common scale, and then minimizing and performing a global fit of all data allows more consistent constraints to be obtained in the SMEFT.

  18. THE PRODUCT CONSISTENCY TEST HOW AND WHY IT WAS DEVELOPED

    SciTech Connect (OSTI)

    Jantzen, C; Ned Bibler, N

    2008-12-15T23:59:59.000Z

    The Product Consistency Test (PCT), American Society for Testing Materials (ASTM) Standard C1285, is currently used world wide for testing glass and glass-ceramic waste forms for high level waste (HLW), low level waste (LLW), and hazardous wastes. Development of the PCT was initiated in 1986 because HLW glass waste forms required extensive characterization before actual production began and required continued characterization during production ({ge}25 years). Non-radioactive startup was in 1994 and radioactive startup was in 1996. The PCT underwent extensive development from 1986-1994 and became an ASTM consensus standard in 1994. During the extensive laboratory testing and inter- and intra-laboratory round robins using non-radioactive and radioactive glasses, the PCT was shown to be very reproducible, to yield reliable results rapidly, to distinguish between glasses of different durability and homogeneity, and to easily be performed in shielded cell facilities with radioactive samples. In 1997, the scope was broadened to include hazardous and mixed (radioactive and hazardous) waste glasses. In 2002, the scope was broadened to include glass-ceramic waste forms which are currently being recommended for second generation nuclear wastes yet to be generated in the nuclear renaissance. Since the PCT has proven useful for glass-ceramics with up to 75% ceramic component and has been used to evaluate Pu ceramic waste forms, the use of this test for other ceramic/mineral waste forms such as geopolymers, hydroceramics, and fluidized bed steam reformer mineralized product is under investigation.

  19. Consistent neutron kinetics data generation for nodal transient calculations

    SciTech Connect (OSTI)

    Akdeniz, B. [Penn State Univ., Nuclear Engineering Program, Univ. Park, PA 16802 (United States); Mueller, E.; Panayotov, D. [Westinghouse Electric Sweden, SE - 721 63 Vaesteraas (Sweden); Ivanov, K. N. [Penn State Univ., Nuclear Engineering Program, Univ. Park, PA 16802 (United States)

    2006-07-01T23:59:59.000Z

    Current three-dimensional transient codes for thermal reactors are mostly based on two-group diffusion-theory nodal models. In the two-group approach no explicit distinction is made between prompt fission neutrons and delayed neutrons. Consequently, effective delayed neutron fractions have traditionally been used in an attempt to compensate for this shortcoming. A fundamentally better approach would be to solve the nodal kinetics equations in a sufficient number of energy groups to explicitly capture neutron emission spectrum effects. However, this would require the availability of a multi-group nodal transient code as well as a lattice code to generate the appropriate multi-group nodal data for the simulator. One such simulator is the PARCS nodal transient code, which is widely used and recognized as representative of the current state-of-the-art. Unfortunately, a proper nodal data preparation path between PARCS and a lattice code is not available. Even though several industrial lattice codes could be considered as candidates, most of them are tailored to producing two-group nodal data and would require modifications to produce multi-group prompt and delayed neutron emission spectra. In this paper, the particular modifications required to match the TransLAT lattice code and the PARCS nodal transient code for BWR transient applications are reported. Some modifications to PARCS were also required to make two-group and multi-group applications fully consistent. Numerical results are presented both to verify the proper functioning of these modifications and to illuminate the impact of various nodal kinetics data approximations in a selected transient calculation. In particular, the significance of blending rodded and un-rodded kinetics data in partially rodded nodes is demonstrated. It is also confirmed that the use of delayed neutron importance factors in two-group calculations notably reduces the differences between two-group and multi-group kinetics calculations. (authors)

  20. Tensiometer and method of determining soil moisture potential in below-grade earthen soil

    DOE Patents [OSTI]

    Hubbell, Joel M. (Idaho Falls, ID); Sisson, James B. (Idaho Falls, ID)

    1997-01-01T23:59:59.000Z

    A portable tensiometer to in situ determine below-grade soil moisture potential of earthen soil includes, a) a body having opposing first and second ends and being adapted for complete insertion into earthen soil below grade; b) a porous material provided at the first body end, the porous material at least in part defining a fluid chamber within the body at the first body end, the fluid chamber being fluidically sealed within the body but for the porous material; c) a degassed liquid received within the fluid chamber; d) a pressure transducer mounted in fluid communication with the fluid chamber; e) the body, pressure transducer and degassed liquid having a combined mass; f) a flexible suspension line connected to the body adjacent the second body end, the flexible line being of sufficient strength to gravitationally freely self suspend the combined mass; and c) the combined mass being sufficient to effectively impart hydraulic communication between below-grade earthen soil contacted by the porous material under the weight of the combined mass. Tensiometers configured to engage the sidewalls of an earthen opening are also disclosed. Methods of taking tensiometric measurements are also disclosed.

  1. Tensiometer and method of determining soil moisture potential in below-grade earthen soil

    DOE Patents [OSTI]

    Hubbell, J.M.; Sisson, J.B.

    1997-07-08T23:59:59.000Z

    A portable tensiometer to in-situ determine below-grade soil moisture potential of earthen soil includes, (a) a body having opposing first and second ends and being adapted for complete insertion into earthen soil below grade; (b) a porous material provided at the first body end, the porous material at least in part defining a fluid chamber within the body at the first body end, the fluid chamber being fluidically sealed within the body but for the porous material; (c) a degassed liquid received within the fluid chamber; (d) a pressure transducer mounted in fluid communication with the fluid chamber; (e) the body, pressure transducer and degassed liquid having a combined mass; (f) a flexible suspension line connected to the body adjacent the second body end, the flexible line being of sufficient strength to gravitationally freely self suspend the combined mass; and (g) the combined mass being sufficient to effectively impart hydraulic communication between below-grade earthen soil contacted by the porous material under the weight of the combined mass. Tensiometers configured to engage the sidewalls of an earthen opening are also disclosed. Methods of taking tensiometric measurements are also disclosed. 12 figs.

  2. Tensiometer and method of determining soil moisture potential in below-grade earthen soil

    DOE Patents [OSTI]

    Hubbell, Joel M. (Idaho Falls, ID); Mattson, Earl D. (Albuquerque, NM); Sisson, James B. (Idaho Falls, ID)

    1998-01-01T23:59:59.000Z

    A tensiometer to in situ determine below-grade soil moisture, potential of earthen soil includes, a) an apparatus adapted for insertion into earthen soil below grade, the apparatus having a below-grade portion, and, comprising; b) a porous material provided in the below-grade portion, the porous material at least in part defining a below-grade first fluid chamber; c) a first fluid conduit extending outwardly of the first fluid chamber; d) a first controllable isolation valve provided within the first fluid conduit, the first controllable isolation valve defining a second fluid chamber in fluid communication with the first fluid chamber through the first fluid conduit and the isolation valve, the first controllable isolation valve being received within the below-grade portion; and e) a pressure transducer in fluid communication with the first fluid chamber, the pressure transducer being received within the below-grade portion. An alternate embodiment includes an apparatus adapted for insertion into earthen soil below grade, the apparatus having a below-grade portion, and including: i) a porous material provided in the below-grade portion, the porous material at least in part defining a below-grade first fluid chamber; and ii) a pressure sensing apparatus in fluid communication with the first fluid chamber, the pressure sensing apparatus being entirely received within the below-grade portion. A method is also disclosed using the above and other apparatus.

  3. Tensiometer and method of determining soil moisture potential in below-grade earthen soil

    DOE Patents [OSTI]

    Hubbell, J.M.; Mattson, E.D.; Sisson, J.B.

    1998-06-02T23:59:59.000Z

    A tensiometer to in-situ determine below-grade soil moisture, potential of earthen soil includes, (a) an apparatus adapted for insertion into earthen soil below grade, the apparatus having a below-grade portion, and, comprising; (b) a porous material provided in the below-grade portion, the porous material at least in part defining a below-grade first fluid chamber; (c) a first fluid conduit extending outwardly of the first fluid chamber; (d) a first controllable isolation valve provided within the first fluid conduit, the first controllable isolation valve defining a second fluid chamber in fluid communication with the first fluid chamber through the first fluid conduit and the isolation valve, the first controllable isolation valve being received within the below-grade portion; and (e) a pressure transducer in fluid communication with the first fluid chamber, the pressure transducer being received within the below-grade portion. An alternate embodiment includes an apparatus adapted for insertion into earthen soil below grade, the apparatus having a below-grade portion, and including: (1) a porous material provided in the below-grade portion, the porous material at least in part defining a below-grade first fluid chamber; and (2) a pressure sensing apparatus in fluid communication with the first fluid chamber, the pressure sensing apparatus being entirely received within the below-grade portion. A method is also disclosed using the above and other apparatus. 6 figs.

  4. Flexible Residential Test Facility: Impact of Infiltration and Ventilation on Measured Heating Season Energy and Moisture Levels

    SciTech Connect (OSTI)

    Vieira, R.; Parker, D.; Fairey, P.; Sherwin, J.; Withers, C.; Hoak, D.

    2013-09-01T23:59:59.000Z

    Two identical laboratory homes designed to model existing Florida building stock were sealed and tested to 2.5 ACH50. Then, one was made leaky with 70% leakage through the attic and 30% through windows, to a tested value of 9 ACH50. Reduced energy use was measured in the tighter home (2.5 ACH50) in the range of 15% to 16.5% relative to the leaky (9 ACH50) home. Internal moisture loads resulted in higher dew points inside the tight home than the leaky home. Window condensation and mold growth occurred inside the tight home. Even cutting internal moisture gains in half to 6.05 lbs/day, the dew point of the tight home was more than 15 degrees F higher than the outside dry bulb temperature. The homes have single pane glass representative of older Central Florida homes.

  5. Magnitude and reactivity consequences of moisture ingress into the modular High-Temperature Gas-Cooled Reactor core

    SciTech Connect (OSTI)

    Smith, O.L. (Oak Ridge National Lab., TN (United States))

    1992-12-01T23:59:59.000Z

    Inadvertent admission of moisture into the primary system of a modular high-temperature gas-cooled reactor has been identified in US Department of Energy-sponsored studies as an important safety concern. The work described here develops an analytical methodology to quantify the pressure and reactivity consequences of steam-generator tube rupture and other moisture-ingress-related incidents. Important neutronic and thermohydraulic processes are coupled with reactivity feedback and safety and control system responses. The rate and magnitude of steam buildup are found to be dominated by major system features such as break size compared with safety valve capacity and reliability and less sensitive to factors such as heat transfer coefficients. The results indicate that ingress transients progress at a slower pace than previously predicted by bounding analyses, with milder power overshoots and more time for operator or automatic corrective actions.

  6. BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders in the common goal of maximizing access to critical research.

    E-Print Network [OSTI]

    Yoder, John I.

    BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting, ecological, and environmental sciences. BioOne provides a sustainable online platform for over 170 journals changes associated with parasitism. The species studied span the trophic spectrum from free-living

  7. BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders in the common goal of maximizing access to critical research.

    E-Print Network [OSTI]

    BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders for Global Change Science to Contribute to a Sustainable Future Author(s): Ruth S. DeFries, Erle C. Ellis, F

  8. BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders in the common goal of maximizing access to critical research.

    E-Print Network [OSTI]

    Takada, Shoji

    #12;BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders in the biological, ecological, and environmental sciences. BioOne provides a sustainable online platform for over

  9. BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders in the common goal of maximizing access to critical research.

    E-Print Network [OSTI]

    Deng, Xing-Wang

    BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders, and environmental sciences. BioOne provides a sustainable online platform for over 170 journals and books published

  10. Experimental investigation of moisture and temperature conditioning of C600/5208 graphite/epoxy composite material 

    E-Print Network [OSTI]

    Grieger, Kenneth Allen

    1979-01-01T23:59:59.000Z

    I XPERIMENTAI INVESTIGATION OF MOI TURE AND TE11PERATURF CONDITIONING OF CGOO/5208 GRAPHITE/EPOXY COMPOSITE MATL'RIAL KENNETH AILEN GRIFGFR Su5&ritted to the Graduate College of Texa. s AQh University in partial fulfillment of the requirement... for the degree of MASTER OF SCIFNCE December 1979 Majo, Subject: Ae&ospace Engineering EXPERINENTAL INVESTIGATION OF MOISTURE AND TENPERATURE CONDITIONING OF C600/5208 GRAPHITE/EPOXY COMPOSITE HATERIAL A Thesis by -KENNETH ALLEN GRIEGER Approved...

  11. Association of airborne moisture-indicating microorganisms withbuilding-related symptoms and water damage in 100 U.S. office buildings:Analyses of the U.S. EPA BASE data

    SciTech Connect (OSTI)

    Mendell, Mark J.; Lei, Quanhong; Cozen, Myrna O.; Shendell, DerekG.; Macher, Janet M.; Tsai, Feng C.

    2003-10-01T23:59:59.000Z

    Metrics of culturable airborne microorganisms for either total organisms or suspected harmful subgroups have generally not been associated with symptoms among building occupants. However, the visible presence of moisture damage or mold in residences and other buildings has consistently been associated with respiratory symptoms and other health effects. This relationship is presumably caused by adverse but uncharacterized exposures to moisture-related microbiological growth. In order to assess this hypothesis, we studied relationships in U.S. office buildings between the prevalence of respiratory and irritant symptoms, the concentrations of airborne microorganisms that require moist surfaces on which to grow, and the presence of visible water damage. For these analyses we used data on buildings, indoor environments, and occupants collected from a representative sample of 100 U.S. office buildings in the U.S. Environmental Protection Agency's Building Assessment Survey and Evaluation (EPA BASE) study. We created 19 alternate metrics, using scales ranging from 3-10 units, that summarized the concentrations of airborne moisture-indicating microorganisms (AMIMOs) as indicators of moisture in buildings. Two were constructed to resemble a metric previously reported to be associated with lung function changes in building occupants; the others were based on another metric from the same group of Finnish researchers, concentration cutpoints from other studies, and professional judgment. We assessed three types of associations: between AMIMO metrics and symptoms in office workers, between evidence of water damage and symptoms, and between water damage and AMIMO metrics. We estimated (as odds ratios (ORs) with 95% confidence intervals) the unadjusted and adjusted associations between the 19 metrics and two types of weekly, work-related symptoms--lower respiratory and mucous membrane--using logistic regression models. Analyses used the original AMIMO metrics and were repeated with simplified dichotomized metrics. The multivariate models adjusted for other potential confounding variables associated with respondents, occupied spaces, buildings, or ventilation systems. Models excluded covariates for moisture-related risks hypothesized to increase AMIMO levels. We also estimated the association of water damage (using variables for specific locations in the study space or building, or summary variables) with the two symptom outcomes. Finally, using selected AMIMO metrics as outcomes, we constructed logistic regression models with observations at the building level to estimate unadjusted and adjusted associations of evident water damage with AMIMO metrics. All original AMIMO metrics showed little overall pattern of unadjusted or adjusted association with either symptom outcome. The 3-category metric resembling that previously used by others, which of all constructed metrics had the largest number of buildings in its top category, was not associated with symptoms in these buildings. However, most metrics with few buildings in their highest category showed increased risk for both symptoms in that category, especially metrics using cutpoints of >100 but <500 colony-forming units (CFU)/m{sup 3} for concentration of total culturable fungi. With AMIMO metrics dichotomized to compare the highest category with all lower categories combined, four metrics had unadjusted ORs between 1.4 and 1.6 for both symptom outcomes. The same four metrics had adjusted ORs of 1.7-2.1 for both symptom outcomes. In models of water damage and symptoms, several specific locations of past water damage had significant associations with outcomes, with ORs ranging from 1.4-1.6. In bivariate models of water damage and selected AMIMO metrics, a number of specific types of water damage and several summary variables for water damage were very strongly associated with AMIMO metrics (significant ORs ranging above 15). Multivariate modeling with the dichotomous AMIMO metrics was not possible due to limited numbers of observations.

  12. Organic acid preservation of high-moisture sorghum grain and its feeding value for growing-finishing swine

    E-Print Network [OSTI]

    Knabe, Darrell Albert

    1973-01-01T23:59:59.000Z

    to the 24 to 36% moisture grain when it was harvested in mid-July but extensive mold growth was noted in one bin after 70 days. This required that it be retreated which raised the acid content from about 1. 5 to 3. 4 percent. The failure of the grain... effective in preserving the grain harvested in mid-July that was used in the second group feeding trial. Ho mold growth was found in the three bins and essentially no microbial growth could be plated from grains preserved with 1. 1/ acid after six weeks...

  13. A method of determining the dissolved oxygen in the moisture of a porous medium and some oxygen diffusion studies

    E-Print Network [OSTI]

    Runkles, Jack Ralph

    1952-01-01T23:59:59.000Z

    this dissolved oxygen The sample chamber apparatus gives ocnsplcte seal of the bottle from the atmosphere The ohsabor does not require a large ameunt Of nitrogen Sb remove all the oxygen from it, It is easily portable and light in weight The proposed method... METHOD QF DETRHRIUIHO THE DISSOLVED OXmEK IE THE MOISTURE OF A POROUS ERDD% @AD SMfE QXYOEB DKFFUSIOE STUDIES ' INTRO DUO fQRF, I Oxygen, bas been known to be important in plant growth fox maay years There has been a great deal of xesearoh...

  14. Many sawmills use sprinkler systems to maintain the moisture content of logs above the fiber satura-

    E-Print Network [OSTI]

    Balasundaram, Balabhaskar "Baski"

    secondary breakdown. A headrig is a machine center consisting of one or more cutting tools that influences Oklahoma Cooperative Extension Service · Division of Agricultural Sciences and Natural Resources FAPC-165, includ- ing what occurs in the log yard, primary breakdown, secondary breakdown, sorting and planing

  15. Results of 1999 Spectral Gamma-Ray and Neutron Moisture Monitoring of Boreholes at Specific Retention Facilities in the 200 East Area, Hanford Site

    SciTech Connect (OSTI)

    DG Horton; RR Randall

    2000-01-18T23:59:59.000Z

    Twenty-eight wells and boreholes in the 200 East Are% Hanford Site, Washington were monitored in 1999. The monitored facilities were past-practice liquid waste disposal facilities and consisted of six cribs and nineteen ''specific retention'' cribs and trenches. Monitoring consisted of spectral gamma-ray and neutron moisture logging. All data are included in Appendix B. The isotopes {sup 137}Cs, {sup 60}Co, {sup 235}U, {sup 238}U, and {sup 154}Eu were identified on spectral gamma logs from boreholes monitoring the PUREX specific retention facilities; the isotopes {sup 137}Cs, {sup 60}Co, {sup 125}Sb, and {sup 154}Eu were identified on the logs from boreholes at the BC Controlled Area cribs and trenches; and {sup 137}Cs, {sup 60}Co, and {sup 125}Sb were, identified on the logs from boreholes at the BX specific retention trenches. Three boreholes in the BC Controlled Area and one at the BX trenches had previous spectral gamma logs available for comparison with 1999 logs. Two of those logs showed that changes in the subsurface distribution of {sup 137}CS and/or {sup 60}Co had occurred since 1992. Although the changes are not great, they do point to continued movement of contaminants in the vadose zone. The logs obtained in 1999 create a larger baseline for comparison with future logs. Numerous historical gross gamma logs exist from most of the boreholes logged. Qualitative comparison of those logs with the 1999 logs show many substantial changes, most of which reflect the decay of deeper short-lived isotopes, such as {sup 106}Ru and {sup 125}Sb, and the much slower decay of shallower and longer-lived isotopes such as {sup 137}Cs. The radionuclides {sup 137}Cs and {sup 60}Co have moved in two boreholes since 1992. Given the amount of movement and the half-lives of the isotopes, it is expected that they will decay to insignificant amounts before reaching groundwater. However, gamma ray logging cannot detect many of the contaminants of interest such as {sup 99}Tc, NO{sub 3}, or {sup 129}I, all of which can be highly mobile in the vadose zone and, for the radionuclides, have long half-lives.

  16. A Self-Consistent Method to Assess Air Quality Co-Benefits

    E-Print Network [OSTI]

    A Self-Consistent Method to Assess Air Quality Co-Benefits from US Climate Policies Rebecca Saari;1 A Self-Consistent Method to Assess Air Quality Co-Benefits from US Climate Policies Rebecca Saari

  17. A Self-Consistent Hubbard U Density-Functional Theory Approach...

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

    Self-Consistent Hubbard U Density-Functional Theory Approach to the Addition-Elimination Reactions of Hydrocarbons on Bare FeO A Self-Consistent Hubbard U Density-Functional Theory...

  18. Impact of Infiltration and Ventilation on Measured Space Conditioning Energy and Moisture Levels in the Hot-Humid Climate, Cocoa, Florida (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2014-04-01T23:59:59.000Z

    Air infiltration and ventilation in residential buildings is a very large part of the heating loads, but empirical data regarding the impact on space cooling has been lacking. Moreover, there has been little data on how building tightness might relate to building interior moisture levels in homes in a hot and humid climate. To address this need, BA-PIRC has conducted research to assess the moisture and cooling load impacts of airtightness and mechanical ventilation in two identical laboratory homes in the hot-humid climate over the cooling season. ?

  19. The effects of temperature, moisture and soluble solids or rehydration, fragmentation and texture of freeze-dried and compressed carrot bars

    E-Print Network [OSTI]

    Rushing, John Earl

    1975-01-01T23:59:59.000Z

    to compression. Three techniques for ob- taining these moisture levels were studied: (1) spraying with water until desired increase in weight is obtained; (2) stopping the freeze-drying operation when the desired moisture level is reach- ed; and (3) allowing... freeze-dried food to equilibrate in a humi- dity chamber until the food adsorbs the desired amount of water. Spraying with water was the method of choice because stopping the freeze-drier at the desired level was difficult and the humidity chamber...

  20. Chai, S.S., Veenendaal,B., West G. and J.P. Walker (2009). Input Parameter Selection for Soil Moisture Retrieval Using an Artificial Neural Network. In: Ostendorf, B., Baldock, P., Bruce, D., Burdett, M. and P. Corcoran (eds.),

    E-Print Network [OSTI]

    Walker, Jeff

    2009-01-01T23:59:59.000Z

    Moisture Retrieval Using an Artificial Neural Network. In: Ostendorf, B., Baldock, P., Bruce, D., Burdett-0-9581366-8-6. INPUT PARAMETERS SELECTION FOR SOIL MOISTURE RETRIEVAL USING AN ARTIFICIAL NEURAL NETWORK Soo-See Chai 1-linear and ill-posed problem. Artificial Neural Networks (ANNs) have been demonstrated to be good solutions

  1. Ecological Entomology (2011), 36, 344354 DOI: 10.1111/j.1365-2311.2011.01278.x Moisture content and nutrition as selection forces

    E-Print Network [OSTI]

    2011-01-01T23:59:59.000Z

    green ash trees, a behaviour confirmed in greenhouse-grown black ash seedlings. Furthermore, biomass as phloem moisture above the feeding site decreased to levels reducing survivorship and biomass) (Seigler & Price, 1976). The role of plant defence in the evolution of insect herbivore feeding behaviours

  2. Soil moisture surpasses elevated CO2 and temperature as a control on soil carbon dynamics in a multi-factor climate change experiment

    SciTech Connect (OSTI)

    Garten Jr, Charles T [ORNL; Classen, Aimee T [ORNL; Norby, Richard J [ORNL

    2009-01-01T23:59:59.000Z

    Some single-factor experiments suggest that elevated CO2 concentrations can increase soil carbon, but few experiments have examined the effects of interacting environmental factors on soil carbon dynamics. We undertook studies of soil carbon and nitrogen in a multi-factor (CO2 x temperature x soil moisture) climate change experiment on a constructed old-field ecosystem. After four growing seasons, elevated CO2 had no measurable effect on carbon and nitrogen concentrations in whole soil, particulate organic matter (POM), and mineral-associated organic matter (MOM). Analysis of stable carbon isotopes, under elevated CO2, indicated between 14 and 19% new soil carbon under two different watering treatments with as much as 48% new carbon in POM. Despite significant belowground inputs of new organic matter, soil carbon concentrations and stocks in POM declined over four years under soil moisture conditions that corresponded to prevailing precipitation inputs (1,300 mm yr-1). Changes over time in soil carbon and nitrogen under a drought treatment (approximately 20% lower soil water content) were not statistically significant. Reduced soil moisture lowered soil CO2 efflux and slowed soil carbon cycling in the POM pool. In this experiment, soil moisture (produced by different watering treatments) was more important than elevated CO2 and temperature as a control on soil carbon dynamics.

  3. Design consistency and driver error as reflected by driver workload and accident rates

    E-Print Network [OSTI]

    Wooldridge, Mark Douglas

    1992-01-01T23:59:59.000Z

    primary directions, speed consistency and driver workload. Speed consistency consists of analyzing predicted speeds on a highway and striving to keep those speeds within a narrow range. Several major research studies have provided methodologies... participating in the Texas Department of Transportation's Masters in Civil Engineering (MSCE) program, and performed the research that formed the basis for this report under the auspices of the Texas Transportation Institute. The data used as a basis...

  4. Energy Efficient Memory Speculation With Memory Latency Tolerance Supporting Sequential Consistency Without A Coherence Protocol

    E-Print Network [OSTI]

    Munday, David Alexander

    2013-01-01T23:59:59.000Z

    1–17, Sept. 2006. [35] Derek Hower. Acoherent shared memory.memory consistency models. Derek Hower [35] pro- posed the

  5. Performance of hybrid quad generation system consisting of solid oxide fuel cell system and

    E-Print Network [OSTI]

    Liso, Vincenzo

    Performance of hybrid quad generation system consisting of solid oxide fuel cell system. Keywords: Energy system modeling, Solid oxide fuel cell, Absorption heat pump. 1. Introduction 1

  6. Page 1 of 2 80.3 Consistent Treatment of Costs

    E-Print Network [OSTI]

    Yang, Eui-Hyeok

    Page 1 of 2 80.3 Consistent Treatment of Costs Policy Name: CONSISTENT TREATMENT OF COSTS October 2008 1. Policy Statement OMB Circular A21, Cost Principles for Educational Institutions, section J, contains a list of items that are deemed unallowable as direct costs on federally sponsored

  7. A generalized self consistent model for effective elastic moduli of human dentine

    E-Print Network [OSTI]

    Qin, Qinghua

    Consistent Model for cell model of fiber-reinforced composites is extended to the case of hollow cylinder model and the corresponding cell model is chosen to consist of a circular hollow cylinder filled from other models such as nano-indentation method. Ã? 2006 Elsevier Ltd. All rights reserved. Keywords

  8. Suppressing Multi-Channel Ultra-Low-Field MRI Measurement Noise Using Data Consistency and Image

    E-Print Network [OSTI]

    Suppressing Multi-Channel Ultra-Low-Field MRI Measurement Noise Using Data Consistency and Image of Mathematics, National Taiwan University, Taipei, Taiwan, 4 Elekta Oy, Helsinki, Finland Abstract Ultra-low. (2013) Suppressing Multi-Channel Ultra-Low-Field MRI Measurement Noise Using Data Consistency and Image

  9. Consistent parametric estimation of the intensity of a spatial-temporal point process.

    E-Print Network [OSTI]

    Schoenberg, Frederic Paik (Rick)

    Consistent parametric estimation of the intensity of a spatial-temporal point process. Frederic under which parametric estimates of the intensity of a spatial-temporal point process are consistent. Although the actual point process being estimated may not be Poisson, an estimate involving maximizing

  10. Self-consistent solution of the Schwinger-Dyson equations for the nucleon and meson propagators

    SciTech Connect (OSTI)

    Bracco, M.E.; Eiras, A.; Krein, G. [Instituto de Fisica Teorica-Universidade Estadual Paulista, Rua Pamplona, 145-01405-900 Sao Paulo, Sao Paulo (Brazil)] [Instituto de Fisica Teorica-Universidade Estadual Paulista, Rua Pamplona, 145-01405-900 Sao Paulo, Sao Paulo (Brazil); Wilets, L. [Department of Physics, FM-15, University of Washington, Seattle, Washington 98195 (United States)] [Department of Physics, FM-15, University of Washington, Seattle, Washington 98195 (United States)

    1994-03-01T23:59:59.000Z

    The Schwinger-Dyson equations for the nucleon and meson propagators are solved self-consistently in an approximation that goes beyond the Hartree-Fock approximation. The traditional approach consists in solving the nucleon Schwinger-Dyson equation with bare meson propagators and bare meson-nucleon vertices; the corrections to the meson propagators are calculated using the bare nucleon propagator and bare nucleon-meson vertices. It is known that such an approximation scheme produces the appearance of ghost poles in the propagators. In this paper the coupled system of Schwinger-Dyson equations for the nucleon and the meson propagators are solved self-consistently including vertex corrections. The interplay of self-consistency and vertex corrections on the ghosts problem is investigated. It is found that the self-consistency does not affect significantly the spectral properties of the propagators. In particular, it does not affect the appearance of the ghost poles in the propagators.

  11. Validation of and enhancements to an operating-speed-based geometric design consistency evaluation model

    E-Print Network [OSTI]

    Collins, Kent Michael

    1995-01-01T23:59:59.000Z

    This thesis documents efforts to validate two elements related to an operating-speed-based geometric design consistency evaluation procedure: (1) the speed reduction estimation ability of the model, and (2) assumptions about acceleration...

  12. Analysis of Dual Consistency for Discontinuous Galerkin Discretizations of Source Terms

    E-Print Network [OSTI]

    Darmofal, David L.

    The effects of dual consistency on discontinuous Galerkin discretizations of solution and solution gradient dependent source terms are examined. Two common discretizations are analyzed: the standard weighting technique for ...

  13. Consistency Management with Repair Actions Christian Nentwich, Wolfgang Emmerich and Anthony Finkelstein

    E-Print Network [OSTI]

    van der Hoek, André

    Consistency Management with Repair Actions Christian Nentwich, Wolfgang Emmerich and Anthony Finkelstein Department of Computer Science University College London Gower Street, London WC1E 6BT, UK {c.nentwich,w.emmerich

  14. Learning Globally Consistent Maps by Relaxation Tom Duckett Stephen Marsland & Jonathan Shapiro

    E-Print Network [OSTI]

    Duckett, Tom

    Learning Globally Consistent Maps by Relaxation #3; Tom Duckett Stephen Marsland & Jonathan Shapiro-70182  Orebro Manchester M13 9PL Sweden England Tom.Duckett@aass.oru.se fmarslans

  15. Near-infrared photodetector consisting of J-aggregating cyanine dye and metal oxide thin films

    E-Print Network [OSTI]

    Osedach, Timothy P.

    We demonstrate a near-infrared photodetector that consists of a thin film of the J-aggregating cyanine dye, U3, and transparent metal-oxide charge transport layers. The high absorption coefficient of the U3 film, combined ...

  16. Solid waste leach characteristics and contaminant-sediment interactions Volume 2: Contaminant transport under unsaturated moisture contents

    SciTech Connect (OSTI)

    Lindenmeier, C.W.; Serne, R.J.; Conca, J.L. [and others

    1995-09-01T23:59:59.000Z

    The objectives of this report and subsequent volumes include describing progress on (1) development and optimization of experimental methods to quantify the release of contaminants from solid wastes and their subsequent interactions with unsaturated sediments and (2) the creation of empirical data that become input parameters to performance assessment (PA) analyses for future Hanford Site disposal units and baseline risk assessments for inactive and existing solid waste disposal units. For this report, efforts focused on developing methodologies to evaluate contaminant transport in Trench 8 (W-5 Burial Ground) sediments under unsaturated (vadose zone) conditions. To accomplish this task, a series of flow-through column tests were run using standard saturated column systems, Wierenga unsaturated column systems (both commercial and modified), and the Unsaturated Flow Apparatus (UFA). The reactants investigated were {sup 85}Sr, {sup 236}U, and {sup 238}U as reactive tracers, and tritium as a non-reactive tracer. Results indicate that for moderately unsaturated conditions (volumetric water contents >50 % of saturation), the Wierenga system performed reasonably well such that long water residence times (50-147 h) were achieved, and reasonably good steady-state flow conditions were maintained. The major drawbacks in using this system for reactive tracer work included (1) the inability to achieve reproducible and constant moisture content below 50% of saturation, (2) the four to six month time required to complete a single test, and (3) the propensity for mechanical failure resulting from laboratory power outages during the prolonged testing period.

  17. The relationship of parental consistency in discipline to locus of control in preschoolers

    E-Print Network [OSTI]

    Schmidt, Corliss Theresa

    1979-01-01T23:59:59.000Z

    THE RELATIONSHIP OF PARENTAL CONSISTENCY IN DISCIPLINE TO LOCUS OF CONTROL IN PRESCHOOLERS A Thesis by CORLISS THERESA SCHMIDT Submitted to the Graduate College of Texas AIIM University in partial fulfillment of the requirement for the degree... of MASTER OF SCIEI'ICE August 1979 Major Subject: Psychology THE RELATIONSHIP OF PARENTAL CONSISTENCY IN DISCIPLINE TO LOCUS OF CONTROL IN PRESCHOOLERS A Thesis by CORLISS THERESA SCHMIDT Approved as to style and content by: ( a a of Committee...

  18. Effect of soil moisture on the vascular cambial activity of terminal shoot growth of grapefruit trees in Texas in winter months

    E-Print Network [OSTI]

    Husain, Akbar

    1957-01-01T23:59:59.000Z

    EFFECT OP SOIL MOISTURE OE TBE VASCULAR CAMBIAL ACTIVITY OF TERMINAL SHOOT GROWTH OP GRAPEFRUIT TREES ZN TEXAS ZN WINTER MONTHS A Thesis By Akbar Hueain Submitted to ths Graduate School of the Agricultural and Mechanical College of Texas... CAMBIAL ACTlVITX OP TERMINAL SHOOT GROWTH OP GRAPEFRUIT TREES I? TEXAS IR WINTER MOMTHS Introduction Frost damage is an important problem in almost all the large citrus producing areas of the world. Such damage is common in the main citrus growing...

  19. The Impact of Above-Sheathing Ventilation on the Thermal and Moisture Performance of Steep-Slope Residential Roofs and Attics

    E-Print Network [OSTI]

    Miller, W.; Karagiozis, A.; Wilson, J.

    2006-01-01T23:59:59.000Z

    THE IMPACT OF ABOVE-SHEATHING VENTILATION ON THE THERMAL AND MOISTURE PERFORMANCE OF STEEP-SLOPE RESIDENTIAL ROOFS AND ATTICS William (Bill) Miller Research Scientist Oak Ridge National Laboratory Oak Ridge, Tennessee Joe Wilson Product... with and without infrared blocking color pigments (IrBCPs) and with and without above-sheathing ventilation. The combination of increased solar reflectance and above-sheathing ventilation reduced the heat flow penetrating the attic floor by 70% as compared...

  20. The Impact of Above-Sheathing Ventilation on the Thermal and Moisture Performance of Steep-Slope Residential Roofs and Attics 

    E-Print Network [OSTI]

    Miller, W.; Karagiozis, A.; Wilson, J.

    2006-01-01T23:59:59.000Z

    THE IMPACT OF ABOVE-SHEATHING VENTILATION ON THE THERMAL AND MOISTURE PERFORMANCE OF STEEP-SLOPE RESIDENTIAL ROOFS AND ATTICS William (Bill) Miller Research Scientist Oak Ridge National Laboratory Oak Ridge, Tennessee Joe Wilson Product... Manager Metro Roof Products Oceanside, California Achilles Karagiozis Research Scientist Oak Ridge National Laboratory Oak Ridge, Tennessee ABSTRACT Field studies were conducted on several attic assemblies having stone-coated metal shake roofs...

  1. Performance Prediction based on Inherent Program Similarity

    E-Print Network [OSTI]

    John, Lizy Kurian

    the SPEC website. Our framework estimates per-benchmark machine ranks with a 0.89 av- erage and a 0 of a standardized benchmark suite for estimating the performance of the application of interest for two reasons,ljohn}@ece.utexas.edu ABSTRACT A key challenge in benchmarking is to predict the performance of an application of interest

  2. Inherent discipline required in large system change

    E-Print Network [OSTI]

    Rivard, Robin L

    2006-01-01T23:59:59.000Z

    Recent electrical architectures of land vehicles have shown a marked increase in networking and integration of electronic controls into traditionally electro-mechanical devices, which results in complex functional interactions ...

  3. Attutude-action consistency and social policy related to nuclear technology

    SciTech Connect (OSTI)

    Lindell, M.K.; Perry, R.W.; Greene, M.

    1980-06-01T23:59:59.000Z

    This study reports the results of a further analysis of questionnaire data--parts of which have been previously reported by Lindell, Earle, Hebert and Perry (1978)--that are related to the issue of consistency of attitudes and behavior toward nuclear power and nuclear waste management. Three factors are considered that might be expected to have a significant bearing on attitude-action consistency: social support, attitude object importance and past activism. Analysis of the data indicated that pronuclear respondents were more likely to show consistency of attitudes and actions (66%) than were antinuclear respondents (51%) although the difference in proportions is not statistically significant. Further analyses showed a strong positive relation between attitude-action consistency and perceived social support, measured by the degree to which the respondent believed that close friends and work associated agreed with his attitude. This relationship held up even when controls for attitude object importance and past activism were introduced. Attitude object importance--the salience of the issue of energy shortage--had a statistically significant effect only when perceived social support was low. Past activism had no significant relation to attitude-action consistency. These data suggest that the level of active support for or opposition to nuclear technology will be affected by the distribution of favorable and unfavorable attitudes among residents of an area. Situations in which pro- and antinuclear attitudes are concentrated among members of interacting groups, rather than distributed randomly, are more likely to produce high levels of polarization.

  4. The Complexity of the Consistency and N-representability Problems for Quantum States

    E-Print Network [OSTI]

    Yi-Kai Liu

    2007-12-18T23:59:59.000Z

    QMA (Quantum Merlin-Arthur) is the quantum analogue of the class NP. There are a few QMA-complete problems, most notably the ``Local Hamiltonian'' problem introduced by Kitaev. In this dissertation we show some new QMA-complete problems. The first one is ``Consistency of Local Density Matrices'': given several density matrices describing different (constant-size) subsets of an n-qubit system, decide whether these are consistent with a single global state. This problem was first suggested by Aharonov. We show that it is QMA-complete, via an oracle reduction from Local Hamiltonian. This uses algorithms for convex optimization with a membership oracle, due to Yudin and Nemirovskii. Next we show that two problems from quantum chemistry, ``Fermionic Local Hamiltonian'' and ``N-representability,'' are QMA-complete. These problems arise in calculating the ground state energies of molecular systems. N-representability is a key component in recently developed numerical methods using the contracted Schrodinger equation. Although these problems have been studied since the 1960's, it is only recently that the theory of quantum computation has allowed us to properly characterize their complexity. Finally, we study some special cases of the Consistency problem, pertaining to 1-dimensional and ``stoquastic'' systems. We also give an alternative proof of a result due to Jaynes: whenever local density matrices are consistent, they are consistent with a Gibbs state.

  5. Glass durability evaluation using product consistency, single-pass flow-through, and vapor hydration tests

    SciTech Connect (OSTI)

    Feng, X.; Hrma, P.; Kim, D. [Pacific Northwest National Lab., Richland, WA (United States)] [and others

    1996-12-31T23:59:59.000Z

    The current approach to assessing chemical durability of waste glasses focuses on a suite of short-term laboratory tests such as dynamic single-pass flow-through (SPFT) tests, static product consistency tests (PCT), and vapor hydration tests. The behavior of the glasses in the three types of tests is quite different, but each test provides insight into the glass corrosion process. The PCT data showed that at constant alumina, silica, and sodium levels the glass durability order for different glass systems is: Boron-series > Boron-Calcium-series > Calcium-series, while the opposite order is observed in SPFT tests. The order for vapor hydration tests is similar to that observed in the PCT tests. The PCT results are consistent with the current understanding of glass structure and are consistent with vapor hydration tests. The SPFT results can be explained using arguments based on solution chemistry.

  6. Statistical dynamics of classical systems: A self-consistent field approach

    SciTech Connect (OSTI)

    Grzetic, Douglas J., E-mail: dgrzetic@uoguelph.ca; Wickham, Robert A., E-mail: rwickham@uoguelph.ca [Department of Physics, University of Guelph, Guelph, Ontario N1G 2W1 (Canada); Shi, An-Chang, E-mail: shi@mcmaster.ca [Department of Physics and Astronomy, McMaster University, Hamilton, Ontario L8S 4M1 (Canada)

    2014-06-28T23:59:59.000Z

    We develop a self-consistent field theory for particle dynamics by extremizing the functional integral representation of a microscopic Langevin equation with respect to the collective fields. Although our approach is general, here we formulate it in the context of polymer dynamics to highlight satisfying formal analogies with equilibrium self-consistent field theory. An exact treatment of the dynamics of a single chain in a mean force field emerges naturally via a functional Smoluchowski equation, while the time-dependent monomer density and mean force field are determined self-consistently. As a simple initial demonstration of the theory, leaving an application to polymer dynamics for future work, we examine the dynamics of trapped interacting Brownian particles. For binary particle mixtures, we observe the kinetics of phase separation.

  7. Test Plan for Evaluating Hammer and Fixed Cutter Grinders Using Multiple Varieties and Moistures of Biomass Feedstock

    SciTech Connect (OSTI)

    Not listed

    2007-07-01T23:59:59.000Z

    Biomass preprocessing is a critical operation in the preparation of feedstock for the front-end of a cellulosic ethanol biorefinery. Its purpose is to chop, grind, or otherwise format the biomass material into a suitable feedstock for optimum conversion to ethanol and other bioproducts. Without this operation, the natural size, bulk density, and flowability characteristics of harvested biomass would decrease the capacities and efficiencies of feedstock assembly unit operations and biorefinery conversion processes to the degree that programmatic cost targets could not be met. The preprocessing unit operation produces a bulk flowable material that 1) improves handling and conveying efficiencies throughout the feedstock assembly system and biorefinery 2) increases biomass surface areas for improved pretreatment efficiencies, 3) reduces particle sizes for improved feedstock uniformity and density, and 4) fractionates structural components for improved compositional quality. The Idaho National Laboratory (INL) is tasked with defining the overall efficiency/effectiveness of current commercial hammer and fixed cutter grinding systems and other connecting systems such as harvest and collection, storage, transportation, and handling for a wide variety of feedstock types used in bioethanol or syngas production. This test plan details tasks and activities for two separate full-scale grinding tests: Material Characterization Test and Machine Characterization Test. For the Material Characterization Test, a small amount (~5-7 tons each) of several feedstock varieties will be ground. This test will define the fractionation characteristics of the grinder that affect the bulk density, particle size distribution, and quality of the size reduced biomass resulting from different separation screen sizes. A specific screen size will be selected based on the characteristics of the ground material. The Machine Characterization Test will then use this selected screen to grind several 30-ton batches of different feedstock varieties and moistures. This test will focus on identifying the performance parameters of the grinding system specific to the feed, fractionation, and screen separation components and their affect on machine capacity and efficiency.

  8. DIRHB -- a relativistic self-consistent mean-field framework for atomic nuclei

    E-Print Network [OSTI]

    T. Niksic; N. Paar; D. Vretenar; P. Ring

    2014-03-17T23:59:59.000Z

    The DIRHB package consists of three Fortran computer codes for the calculation of the ground-state properties of even-even atomic nuclei using the framework of relativistic self-consistent mean-field models. Each code corresponds to a particular choice of spatial symmetry: the DIRHBS, DIRHBZ and DIRHBT codes are used to calculate nuclei with spherical symmetry, axially symmetric quadrupole deformation, and triaxial quadrupole shapes, respectively. Reflection symmetry is assumed in all three cases. The latest relativistic nuclear energy density functionals are implemented in the codes, thus enabling efficient and accurate calculations over the entire nuclide chart.

  9. Self-consistent Green's functions calculation of the nucleon mean-free path

    E-Print Network [OSTI]

    A. Rios; V. Soma

    2011-12-22T23:59:59.000Z

    The extension of Green's functions techniques to the complex energy plane provides access to fully dressed quasi-particle properties from a microscopic perspective. Using self-consistent ladder self-energies, we find both spectra and lifetimes of such quasi-particles in nuclear matter. With a consistent choice of the group velocity, the nucleon mean-free path can be computed. Our results indicate that, for energies above 50 MeV at densities close to saturation, a nucleon has a mean-free path of 4 to 5 femtometers.

  10. Self-Consistent RPA based on a Many-Body Vacuum

    E-Print Network [OSTI]

    Mohsen Jemai; Peter Schuck

    2010-11-23T23:59:59.000Z

    Self-Consistent RPA is extended in a way so that it is compatable with a variational ansatz for the ground state wave function as a fermionic many-body vacuum. Employing the usual equation of motion technique, we arrive at extended RPA equations of the Self Consistent RPA structure. In principle the Pauli principle is, therefore, fully respected. However, the correlation functions entering the RPA matrix can only be obtained from a systematic expansion in powers of some combinations of RPA amplitudes. We demonstrate for a model case that this expansion may converge rapidly.

  11. Temperature Fluctuation and an Expected Limit of Hubble Parameter in the Self-Consistent Model

    E-Print Network [OSTI]

    A. B. Morcos

    2004-12-08T23:59:59.000Z

    The temperature gradient of microwave background radiation (CMBR) is calculated in the Self Consistent Model. An expected values for Hubble parameter have been presented in two different cases. In the first case the temperature is treated as a function of time only, while in the other one the temperature depends on relaxation of isotropy condition in the self-consistent model and the assumption that the universe expands adiabatically. The COBE's or WMAP's fluctuations in temperature of CMBR may be used to predict a value for Hubble parameter.

  12. Computer Graphics International 2004 (CGI), June 1619, Crete, Greece. IEEE Computer Society Press. Consistent Normal Orientation for Polygonal Meshes

    E-Print Network [OSTI]

    Zachmann, Gabriel

    . Consistent Normal Orientation for Polygonal Meshes Pavel Borodin Gabriel Zachmann Reinhard Klein Institute

  13. Full paper / Mmoire Self-assembly of hybrid solids consisting of 2D supramolecular

    E-Print Network [OSTI]

    Paik Suh, Myunghyun

    Full paper / Mémoire Self-assembly of hybrid solids consisting of 2D supramolecular networks- selected molecular building blocks may yield designed supramolecular structure in one-pot process. We have been interested in construction of the materials, where two species with different properties coexist

  14. Neonatal Hearing Screening Test Consistent with loss in one or both ears within frequency range

    E-Print Network [OSTI]

    Levin, Judith G.

    Neonatal Hearing Screening Test Consistent with loss in one or both ears within frequency range: Gene specific mutation screening If familial and nonsyndromal is suspected, consider: GJB2 testing GJB6 testing CMV testing Environmental etiologies Gene specific screening may be warranted If nonsyndromal

  15. Training Reciprocity Achieves Greater Consistency, Saves Time and Money for Idaho, Other DOE Sites

    Broader source: Energy.gov [DOE]

    IDAHO FALLS, Idaho – Contracting companies supporting EM’s cleanup program at the Idaho site volunteered to be among the first to use a new DOE training reciprocity program designed to bring more consistency to health and safety training across the complex, reduce redundancy and realize savings and other efficiencies.

  16. Nuclear Databases: National Resource Nuclear databases consists of carefully organized scientific

    E-Print Network [OSTI]

    Ohta, Shigemi

    Nuclear Databases: National Resource Nuclear databases consists of carefully organized scientific information that has been gathered over 50 years of low-energy nuclear physics research worldwide. These powerful databases have enormous value and they represent a genuine national resource. Six core nuclear

  17. Consistency of the posterior distribution and MLE for piecewise linear regression

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Consistency of the posterior distribution and MLE for piecewise linear regression Tristan Launay1 and that of the Bayes estimator for a two-phase piecewise linear regression mdoel where the break-point is unknown and be the unknown regression coefficient of the non-zero phase. The observations X1:n = (X1, . . . , Xn) depend

  18. Hamming embedding and weak geometric consistency for large scale image search

    E-Print Network [OSTI]

    Verbeek, Jakob

    Hamming embedding and weak geometric consistency for large scale image search Herve Jegou, Matthijs improves recent methods for large scale image search. State-of-the-art methods build on the bag large datasets. Exper- iments performed on a dataset of one million of images show a signifi- cant

  19. Collective spin modes in monodimensional magnonic crystals consisting of dipolarly coupled nanowires

    E-Print Network [OSTI]

    Adeyeye, Adekunle

    encompassing several Brillouin zones relative to the artificial spatial periodicity. This experimental evidence determined by the artificial periodicity. Alternating nanowires of polycrystalline Permalloy Ni80Fe20 exposure wavelength followed by a lift-off technique.4 Sample consists of nanowires of widths w1=350 nm

  20. temperature differences exist between the day and night faces of the planet, consistent with a model

    E-Print Network [OSTI]

    Carpick, Robert W.

    with a model in which very little horizontal energy transport occurs in the planetary atmosphere. Furthermoretemperature differences exist between the day and night faces of the planet, consistent. 626, 523 (2005). 3. There is no official terminology for planets that orbit close to their parent

  1. Consistent off-shell $?N N$ vertex and nucleon self-energy

    E-Print Network [OSTI]

    S. Kondratyuk; O. Scholten

    1998-11-05T23:59:59.000Z

    We present a consistent calculation of half-off-shell form factors in the pion-nucleon vertex and the nucleon self-energy. Numerical results are presented. Near the on-shell point the pion-nucleon vertex is dominated by the pseudovector coupling, while at large nucleon invariant masses we find a sizable pseudoscalar admixture.

  2. Sufficient Criteria for Consistent Behavior Modeling with Refined Activity Diagrams: Long Version

    E-Print Network [OSTI]

    Wichmann, Felix

    ,taentzer}@mathematik.uni-marburg.de 3 Siemens AG, Corporate Technology, Germany, katharina.mehner@siemens.com Abstract. In use case on the theory of graph transformation and paves the ground for a consistency analysis of the required system by a tool for graph transformation. 1 Introduction Requirements engineering is the process of gathering

  3. Estimating GRACE monthly water storage change consistent with hydrology by assimilating hydrological

    E-Print Network [OSTI]

    Stuttgart, Universität

    Estimating GRACE monthly water storage change consistent with hydrology by assimilating hydrological information B. Devaraju, N. Sneeuw Institute of Geodesy, Universit¨at Stuttgart, Germany estimates of mass changes with observed hydrological data, which is available for 20% of the land area

  4. A self-consistent solution in affine space with scalar field

    E-Print Network [OSTI]

    V. Dorofeev

    2006-03-29T23:59:59.000Z

    Conformal connection of scalar field is shown to produce possible non-metricity in affine connection spaces. In case of self-consistent solution the non-metricity is a correction to background Riemannian structure with respect to gravitational constant and its magnitude may be essential in the early Universe.

  5. New Loops! MiTeGen* 50MicroMountsTM consist of a thin microfabricated

    E-Print Network [OSTI]

    Meagher, Mary

    New Loops! MiTeGen* 50µMicroMountsTM consist of a thin microfabricated polyimide film attached to a solid non-magnetic stainless steel pin. The film is polyimide, which is used in Kapton® tape and is employed for X- ray transparent windows on X-ray beam lines. The film is curved by wrapping polyimide film

  6. A quick and efficient method for consistent initialization of battery models

    E-Print Network [OSTI]

    Subramanian, Venkat

    criterion on the other end that can ulti- mately satisfy all the required conditions in a battery unitA quick and efficient method for consistent initialization of battery models Vijayasekaran 2007 Available online 21 April 2007 Abstract Secondary batteries are usually modeled as a system

  7. Abstract--Researchers have hypothesized that animal locomotory patterns seen are consistent with the resonant

    E-Print Network [OSTI]

    Krovi, Venkat

    -645-3875). showed that humans, and by extension all animals, maintain resonance during walking and running [1, 2Abstract-- Researchers have hypothesized that animal locomotory patterns seen are consistent employed virtual prototyping with a capable musculoskeletal simulation model to study the same hypothesis

  8. Fourier grid Hamiltonian multiconfigurational self-consistent-field: A method to calculate multidimensional hydrogen vibrational

    E-Print Network [OSTI]

    Hammes-Schiffer, Sharon

    Fourier grid Hamiltonian multiconfigurational self-consistent-field: A method to calculate Received 10 May 2000; accepted 28 June 2000 The Fourier Grid Hamiltonian Multiconfigurational Self that are products of one-dimensional wavefunctions, with a Fourier grid method that represents the one

  9. 1. THE RADIATION BELTS The outer zone radiation belts consist of energetic elec-

    E-Print Network [OSTI]

    Elkington, Scot R.

    1. THE RADIATION BELTS The outer zone radiation belts consist of energetic elec- trons trapped in the geomagnetic field. The dynamics of the belts are dictated by the global and local electric and mag- netic electrons in the outer zone and electric and magnetic field variations occurring on ULF time scales

  10. CSPs and complexity An instance of the constraint satisfaction problem (CSP) consists of a set of

    E-Print Network [OSTI]

    Zhao, Yuxiao

    CSPs and complexity An instance of the constraint satisfaction problem (CSP) consists of a set to the variables in a way so that all constraints are (simultaneously) satisfied. The general CSP is NP-complete. However, when the CSP is restricted to a fixed constraint language (a set of allowed constraint

  11. (Smart) Look-Ahead Arc Consistency and the Pursuit of CSP Tractability

    E-Print Network [OSTI]

    Dalmau, Victor

    (Smart) Look-Ahead Arc Consistency and the Pursuit of CSP Tractability Hubie Chen 1 and V#19. The constraint satisfaction problem (CSP) can be formu- lated as the problem of deciding, given a pair (A; B) of relational struc- tures, whether or not there is a homomorphism from A to B. Although the CSP is in general

  12. A Generalization of Generalized Arc Consistency: From Constraint Satisfaction to Constraint-Based Inference

    E-Print Network [OSTI]

    Mackworth, Alan K.

    -binary classic con- straint satisfaction problems (CSPs). Based on the Semiring CSP and Valued CSP frameworks CSP, probabilistic CSP, max CSP, and weighted CSP. This extension is based on an idempotent satisfaction problem (CSP), local consistency can be characterized as deriving new constraints based on local

  13. Changing System Interfaces Consistently: a New Refinement Strategy for CSP B

    E-Print Network [OSTI]

    Doran, Simon J.

    Changing System Interfaces Consistently: a New Refinement Strategy for CSP B Steve Schneider refinement in the context of CSP B. Our motivation to include this notion of refinement within the CSP B to change the events of a CSP process and the B machines when refining a system. Notions of refinement based

  14. Hierarchy of consistent n-component Cahn-Hilliard systems Franck Boyer

    E-Print Network [OSTI]

    Boyer, Edmond

    elsewhere. (1.2) 1 hal-00933674,version1-20Jan2014 #12;2 F. Boyer, S. Minjeaud Those assumptions implyHierarchy of consistent n-component Cahn-Hilliard systems Franck Boyer Aix Marseille Universit´e, CNRS, Centrale Marseille, I2M, UMR 7373, 13453 Marseille, France franck.boyer@univ-amu.fr Sebastian

  15. Phytoplankton consists of one-celled marine and freshwater microalgae and other plant-like organisms.

    E-Print Network [OSTI]

    Florida, University of

    , taking up carbon dioxide and nutrients from the water and using light as an energy source. The microalgaePhytoplankton consists of one-celled marine and freshwater microalgae and other plant microalgae species (Hoff and Snell, 2008). Species Temperature (°C) Light (Lux) Salinity (ppt ­ ) Chaetoceros

  16. UNSUPERVISED MINING OF AUDIOVISUALLY CONSISTENT SEGMENTS IN VIDEOS WITH APPLICATION TO STRUCTURE ANALYSIS

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    UNSUPERVISED MINING OF AUDIOVISUALLY CONSISTENT SEGMENTS IN VIDEOS WITH APPLICATION TO STRUCTURE technique is proposed to discover repeating video segments exhibiting audio and visual con- sistency accurate detection of the underlying event throughout the video. Event min- ing is applied to unsupervised

  17. to 150 GPa, consistent with the modulus values of large SWNT bundles (22). Al-

    E-Print Network [OSTI]

    Cottet, Audrey

    to 150 GPa, consistent with the modulus values of large SWNT bundles (22). Al- though an individual to provide the optimum conditions for nanotube strand formation. The gas flow carried the strands down), assuming that the sample volume is constant, where D0 and Df are the original diameter and the real

  18. A CONSISTENT MODELLING METHODOLOGY FOR SECONDARY1 SETTLING TANKS: A RELIABLE NUMERICAL METHOD2

    E-Print Network [OSTI]

    Bürger, Raimund

    relations for hindered settling, compression and dispersion can be used within the model, allowing the user, continuous sedimentation, secondary clarifier, simulation5 model, partial differential equation6 NomenclatureA CONSISTENT MODELLING METHODOLOGY FOR SECONDARY1 SETTLING TANKS: A RELIABLE NUMERICAL METHOD2

  19. A consistent modelling methodology for secondary settling tanks: a reliable numerical method

    E-Print Network [OSTI]

    Bürger, Raimund

    accounting for sediment compressibility, and a dispersion term for turbulence. In addition, the solutionA consistent modelling methodology for secondary settling tanks: a reliable numerical method modelling methodology for secondary settling tanks (SSTs) leads to a partial differential equation (PDE

  20. A more consistent method for extracting and amplifying DNA from bee wings

    E-Print Network [OSTI]

    A more consistent method for extracting and amplifying DNA from bee wings Elaine M. GOULD, Michelle for genotyping certain behavioural traits required for breeding. One method is to use wing clippings. However reaction (PCR) amplification. Here, we describe an improved method for extracting DNA from bee wings using

  1. The Definition of Double Commutators and Consistency in Free Field Theory

    E-Print Network [OSTI]

    J. M. Pawlowski

    1996-10-09T23:59:59.000Z

    Within the framework of generalized functions a general consistent definition of double commutators is given. This definition respects the Jacobi identity even if the regularization is removed. The double commutator of fermionic currents is calculated in this limit. We show that BJL--type prescriptions and point--splitting prescriptions for calculating double commutators fail to give correct results in free field theory.

  2. On a time consistency concept in risk averse multi-stage stochastic ...

    E-Print Network [OSTI]

    2008-12-11T23:59:59.000Z

    That is, our decisions should be a function of the history of the data process available at the time ... ering the case with finite number of scenarios will allow us to avoid some technical complications ..... (as well as (3.8)) is not time consistent.

  3. The CRAC channel consists of a tetramer formed by Stim-induced dimerization of Orai dimers

    E-Print Network [OSTI]

    Parker, Ian

    LETTERS The CRAC channel consists of a tetramer formed by Stim-induced dimerization of Orai dimers terminus of Stim thus induces Orai dimers to dimerize, forming tetramers that constitute the Ca21-treated cells14 , whereas functional measurements of expressed tandem Orai multimers indicate a tetramer

  4. SU-E-J-29: Audiovisual Biofeedback Improves Tumor Motion Consistency for Lung Cancer Patients

    SciTech Connect (OSTI)

    Lee, D; Pollock, S; Makhija, K; Keall, P [The University of Sydney, Camperdown, NSW (Australia); Greer, P [The University of Newcastle, Newcastle, NSW (Australia); Calvary Mater Newcastle Hospital, Newcastle, NSW (Australia); Arm, J; Hunter, P [Calvary Mater Newcastle Hospital, Newcastle, NSW (Australia); Kim, T [The University of Sydney, Camperdown, NSW (Australia); University of Virginia Health System, Charlottesville, VA (United States)

    2014-06-01T23:59:59.000Z

    Purpose: To investigate whether the breathing-guidance system: audiovisual (AV) biofeedback improves tumor motion consistency for lung cancer patients. This will minimize respiratory-induced tumor motion variations across cancer imaging and radiotherapy procedues. This is the first study to investigate the impact of respiratory guidance on tumor motion. Methods: Tumor motion consistency was investigated with five lung cancer patients (age: 55 to 64), who underwent a training session to get familiarized with AV biofeedback, followed by two MRI sessions across different dates (pre and mid treatment). During the training session in a CT room, two patient specific breathing patterns were obtained before (Breathing-Pattern-1) and after (Breathing-Pattern-2) training with AV biofeedback. In each MRI session, four MRI scans were performed to obtain 2D coronal and sagittal image datasets in free breathing (FB), and with AV biofeedback utilizing Breathing-Pattern-2. Image pixel values of 2D images after the normalization of 2D images per dataset and Gaussian filter per image were used to extract tumor motion using image pixel values. The tumor motion consistency of the superior-inferior (SI) direction was evaluated in terms of an average tumor motion range and period. Results: Audiovisual biofeedback improved tumor motion consistency by 60% (p value = 0.019) from 1.0±0.6 mm (FB) to 0.4±0.4 mm (AV) in SI motion range, and by 86% (p value < 0.001) from 0.7±0.6 s (FB) to 0.1±0.2 s (AV) in period. Conclusion: This study demonstrated that audiovisual biofeedback improves both breathing pattern and tumor motion consistency for lung cancer patients. These results suggest that AV biofeedback has the potential for facilitating reproducible tumor motion towards achieving more accurate medical imaging and radiation therapy procedures.

  5. ARM - Measurement - Atmospheric moisture

    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 for4,645 3,625govInstrumentstdmadap Documentation TDMADAP : XDC documentationBarrow, AlaskaWhenimage ARM Dataparticlemoisture ARM

  6. ARM - Measurement - Soil moisture

    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 for4,645 3,625govInstrumentstdmadap Documentation TDMADAP : XDCnarrowbandheat flux ARM Data Discovery Browse Data Comments?

  7. Roofing Moisture Tolerance

    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:Energy: Grid Integration Redefining What's PossibleRadiation Protection TechnicalResonantNovember 15 toAdvancesRockSodiumWIPP UPDATE:

  8. Transport enhancement and suppression in turbulent magnetic reconnection: A self-consistent turbulence model

    SciTech Connect (OSTI)

    Yokoi, N. [Institute of Industrial Science, University of Tokyo, Tokyo (Japan)] [Institute of Industrial Science, University of Tokyo, Tokyo (Japan); Higashimori, K.; Hoshino, M. [Department of Earth and Planetary Science, University of Tokyo, Tokyo (Japan)] [Department of Earth and Planetary Science, University of Tokyo, Tokyo (Japan)

    2013-12-15T23:59:59.000Z

    Through the enhancement of transport, turbulence is expected to contribute to the fast reconnection. However, the effects of turbulence are not so straightforward. In addition to the enhancement of transport, turbulence under some environment shows effects that suppress the transport. In the presence of turbulent cross helicity, such dynamic balance between the transport enhancement and suppression occurs. As this result of dynamic balance, the region of effective enhanced magnetic diffusivity is confined to a narrow region, leading to the fast reconnection. In order to confirm this idea, a self-consistent turbulence model for the magnetic reconnection is proposed. With the aid of numerical simulations where turbulence effects are incorporated in a consistent manner through the turbulence model, the dynamic balance in the turbulence magnetic reconnection is confirmed.

  9. Consistent Modified Gravity Analysis of Anisotropic Galaxy Clustering Using BOSS DR11

    E-Print Network [OSTI]

    Song, Yong-Seon; Linder, Eric; Koyama, Kazuya; Sabiu, Cristiano G; Zhao, Gong-Bo; Bernardeau, Francis; Nishimichi, Takahiro; Okumura, Teppei

    2015-01-01T23:59:59.000Z

    We analyse the clustering of cosmic large scale structure using a consistent modified gravity perturbation theory, accounting for anisotropic effects along and transverse to the line of sight. The growth factor has a particular scale dependence in f(R) gravity and we fit for the shape parameter f_{R0} simultaneously with the distance and the large scale (general relativity) limit of the growth function. Using more than 690,000 galaxies in the Baryon Oscillation Spectroscopy Survey Data Release 11, we find no evidence for extra scale dependence, with the 95\\% confidence upper limit |f_{R0}| <8 \\times 10^{-4}. Future clustering data, such as from the Dark Energy Spectroscopic Instrument, can use this consistent methodology to impose tighter constraints.

  10. Nonparametric test of consistency between cosmological models and multiband CMB measurements

    E-Print Network [OSTI]

    Aghamousa, Amir

    2015-01-01T23:59:59.000Z

    We present a novel approach to test the consistency of the cosmological models with multiband CMB data using a nonparametric approach. In our analysis we calibrate the REACT (Risk Estimation and Adaptation after Coordinate Transformation) confidence levels associated with distances in function space (confidence distances) based on the Monte Carlo simulations in order to test the consistency of an assumed cosmological model with observation. To show the applicability of our algorithm, we confront Planck 2013 temperature data with concordance model of cosmology considering two different Planck spectra combination. In order to have an accurate quantitative statistical measure to compare between the data and the theoretical expectations, we calibrate REACT confidence distances and perform a bias control using many realizations of the data. Our results in this work using Planck 2013 temperature data put the best fit $\\Lambda$CDM model at $95\\% (\\sim 2\\sigma)$ confidence distance from the center of the nonparametri...

  11. Self-Consistent Model of Roton Cluster Excitations in Liquid Helium II

    E-Print Network [OSTI]

    V. I. Kruglov; M. J. Collett

    2006-05-18T23:59:59.000Z

    We have proposed a model of roton cluster excitations in liquid helium~II based on a Schr\\"odinger-type equation with a self-consistent confining potential. We have derived an equation for the number of atoms in roton excitations, which can be treated as quantum $3{\\rm D}$ solitons, depending on vibrational quantum numbers. It is shown that the smallest roton cluster is in the symmetric vibrational quantum state and consists of 13 helium atoms. We have also used a modified Born approximation to calculate the $s$-scattering length for helium atoms. This allows us to calculate all parameters of Landau's roton excitation spectrum, in agreement to high accuracy with experimental measurements from neutron scattering.

  12. Comparison of Self-Consistent Skyrme and Gogny Calculations for Light Hg Isotopes

    E-Print Network [OSTI]

    M. Warda; A. Staszczak; L. Próchniak

    2011-07-05T23:59:59.000Z

    The ground-state properties of neutron-deficient Hg isotopes have been investigated by the constrained self-consistent Hartree-Fock-Bogoliubov approach with the Skyrme and Gogny effective forces. In the case of the Skyrme interaction we h ave also applied the Hartree-Fock+BCS model with the state-dependent $\\delta$-pairing interaction. Potential energy surfaces and pairing properties have been compared for the both types of forces.

  13. Statefinder diagnostic and stability of modified gravity consistent with holographic and new agegraphic dark energy

    E-Print Network [OSTI]

    M. R. Setare; Mubasher Jamil

    2010-08-27T23:59:59.000Z

    Recently one of us derived the action of modified gravity consistent with the holographic and new-agegraphic dark energy. In this paper, we investigate the stability of the Lagrangians of the modified gravity as discussed in [M. R. Setare, Int. J. Mod. Phys. D 17 (2008) 2219; M. R. Setare, Astrophys. Space Sci. 326 (2010) 27]. We also calculate the statefinder parameters which classify our dark energy model.

  14. New wind input term consistent with experimental, theoretical and numerical considerations

    E-Print Network [OSTI]

    V. E. Zakharov; D. Resio; A. Pushkarev

    2012-12-05T23:59:59.000Z

    We offer a new method for determining the wind source term for energy and momentum fluxes transfer from the atmosphere to the wind-driven sea. This new source-term formulation is based on extensive analysis of experimental data collected at different sites around the world. It is shown that this new wind source term to be consistent both with numerical solution of exact equation for resonant four-wave interactions and available experimental data.

  15. Third minima in thorium and uranium isotopes in a self-consistent theory

    E-Print Network [OSTI]

    J. D. McDonnell; W. Nazarewicz; J. A. Sheikh

    2013-05-23T23:59:59.000Z

    Background: Deep third minima have been predicted in some non-self-consistent models to impact fission pathways of thorium and uranium isotopes. These predictions have guided the interpretation of resonances seen experimentally. On the other hand, self-consistent calculations consistently predict very shallow potential-energy surfaces in the third minimum region. Purpose: We investigate the interpretation of third-minimum configurations in terms of dimolecular states. We study the isentropic potential-energy surfaces of selected even-even thorium and uranium isotopes at several excitation energies. In order to understand the driving effects behind the presence of third minima, we study the interplay between pairing and shell effects. Methods: We use the finite-temperature superfluid nuclear density functional theory. We consider a traditional functional, SkM*, and a recent functional, UNEDF1, optimized for fission studies. Results: We predict very shallow or no third minima in the potential-energy surfaces of 232Th and 232U. In Th and U isotopes with N=136 and 138, the third minima are deeper. We show that the reflection-asymmetric configurations around the third minimum can be associated with dimolecular states involving the spherical doubly magic 132Sn and a lighter deformed Zr or Mo fragment. The potential-energy surfaces for 228,232Th and 232U at several excitation energies are presented. Conclusions: We show that the neutron shell effect that governs the existence of the dimolecular states around the third minimum is consistent with the spherical-to-deformed shape transition in the Zr and Mo isotopes around N=58. We demonstrate that the thermal reduction of pairing and enhancement of shell effects at small excitation energies help to develop deeper third minima. At large excitation energies, shell effects are washed out and third minima disappear altogether.

  16. Consistency of lattice definitions of U(1) flux in Abelian projected SU(2) gauge theory

    E-Print Network [OSTI]

    Takayuki Matsuki; Richard W. Haymaker

    2003-10-07T23:59:59.000Z

    We reexamine the dual Abrikosov vortex under the requirement that the lattice averages of the fields satisfy exact Maxwell equations [ME]. The electric ME accounts for the total flux and the magnetic ME determines the shape of the confining string. This leads to unique and consistent definitions of flux and electric and magnetic currents at finite lattice spacing. The resulting modification of the standard DeGrand-Toussaint construction gives a magnetic current comprised of smeared monopoles.

  17. Two-particle irreducible effective actions versus resummation: analytic properties and self-consistency

    E-Print Network [OSTI]

    Michael Brown; Ian Whittingham

    2015-03-30T23:59:59.000Z

    Approximations based on two-particle irreducible (2PI) effective actions (also known as $\\Phi$-derivable, Cornwall-Jackiw-Tomboulis or Luttinger-Ward functionals depending on context) have been widely used in condensed matter and non-equilibrium quantum/statistical field theory because this formalism gives a robust, self-consistent, non-perturbative and systematically improvable approach which avoids problems with secular time evolution. The strengths of 2PI approximations are often described in terms of a selective resummation of Feynman diagrams to infinite order. However, the Feynman diagram series is asymptotic and summation is at best a dangerous procedure. Here we show that, at least in the context of a toy model where exact results are available, the true strength of 2PI approximations derives from their self-consistency rather than any resummation. This self-consistency allows truncated 2PI approximations to capture the branch points of physical amplitudes where adjustments of coupling constants can trigger an instability of the vacuum. This, in effect, turns Dyson's argument for the failure of perturbation theory on its head. As a result we find that 2PI approximations perform better than Pad\\'e approximation, but not as well as Borel summation where the latter is well-defined. Finally, we introduce a hybrid 2PI-Pad\\'e method.

  18. A case study of the mesoscale and synoptic-scale heat and moisture budgets in the vicinity of a mesoscale convective complex

    E-Print Network [OSTI]

    Dial, Greg Leander

    1990-01-01T23:59:59.000Z

    A CASE STUDY OF THE MESOSCALE AND SYNOPTIC-SCALE HEAT AND MOISTURE BUDGETS IN THE VICINITY OF A MESOSCALE CONVECTIVE COMPLEX A Thesis by GREG LEANDER DIAL Submitted to the Office of Graduate Studies of Texas A8 M University in partial...&j Leandor Dial Approved as lo style and content by: Kcnnctt& C, ftrunrti&lgc (Ctn&i& ol' Co&nn&ittcc) (I tcn&l&c&) Norman W. Na glc (Mcmbcr) E ar . ipscr (I les&I of Dcpartmcnt) I 1 a y I 9 &3 0 ABSTRACT A Case Study of the Mesoscale and Synoptic...

  19. Nonequilibrium molecular vibrons: An approach based on the nonequilibrium Green function technique and the self-consistent Born approximation

    E-Print Network [OSTI]

    Cuniberti, Gianaurelio

    an analytical theory for this case. This theory is based on the self-consistent Born approximation SCBA , which

  20. Some exploitations of the self-consistent QRPA approach with the Gogny force

    SciTech Connect (OSTI)

    Peru, S.; Martini, M.; Dupuis, M. [CEA,DAM, DIF, F-91297 Arpajon (France); Institut d'Astronomie et d'Astrophysique, Universite Libre de Bruxelles, CP-226, 1050 Brussels, Belgium and CEA,DAM, DIF, F-91297 Arpajon (France); CEA,DAM, DIF, F-91297 Arpajon (France)

    2012-10-20T23:59:59.000Z

    Fully consistent axially-symmetric-deformed quasiparticle random phase approximation calculations have been performed with the D1S Gogny force. Giant resonances in exotic nuclei as well as in deformed Mg and Si isotopes have been studied. Dipole responses have been calculated in Ne isotopes and N=16 isotones to study the existence of soft dipole modes in exotic nuclei. The same formalism has been used to describe multipole responses up to octupole in the deformed and heavy nucleus {sup 238}U. Low energy spectroscopy of nickel isotopes has been studied, revealing 0{sup +} states which display a particular structure.

  1. Color-spin locking in a self-consistent Dyson-Schwinger approach

    E-Print Network [OSTI]

    Florian Marhauser; Dominik Nickel; Michael Buballa; Jochen Wambach

    2007-03-30T23:59:59.000Z

    We investigate the color-spin locked (CSL) phase of spin-one color- superconducting quark matter using a truncated Dyson-Schwinger equation for the quark propagator in Landau gauge. Starting from the most general parity conserving ansatz allowed by the CSL symmetry, the Dyson-Schwinger equation is solved self-consistently and dispersion relations are discussed. We find that chiral symmetry is spontaneously broken due to terms which have previously been neglected. As a consequence, the excitation spectrum contains only gapped modes even for massless quarks. Moreover, at moderate chemical potentials the quasiparticle pairing gaps are several times larger than expected from extrapolated weak-coupling results.

  2. Self-consistent Green's function calculation of 16O at small missing energies

    E-Print Network [OSTI]

    C. Barbieri; W. H. Dickhoff

    2004-10-19T23:59:59.000Z

    Calculations of the one-hole spectral function of 16O for small missing energies are reviewed. The self-consistent Green's function approach is employed together with the Faddeev equations technique in order to study the coupling of both particle-particle and particle-hole phonons to the single-particle motion. The results indicate that the characteristics of hole fragmentation are related to the low-lying states of 16O and an improvement of the description of this spectrum, beyond the random phase approximation, is required to understand the experimental strength distribution. A first calculation in this direction that accounts for two-phonon states is discussed.

  3. Third Minima in Thorium and Uranium Isotopes in a Self-Consistent Theory

    SciTech Connect (OSTI)

    McDonnell, J. D. [UTK/ORNL/LLNL; Nazarewicz, Witold [UTK/ORNL/University of Warsaw; Sheikh, J. A. [UTK/ORNL/University of Kashmir, India

    2013-01-01T23:59:59.000Z

    Background: Well-developed third minima, corresponding to strongly elongated and reflection-asymmetric shapes associated with dimolecular configurations, have been predicted in some non-self-consistent models to impact fission pathways of thorium and uranium isotopes. These predictions have guided the interpretation of resonances seen experimentally. On the other hand, self-consistent calculations consistently predict very shallow potential-energy surfaces in the third minimum region.

    Purpose: We investigate the interpretation of third-minimum configurations in terms of dimolecular (cluster) states. We study the isentropic potential-energy surfaces of selected even-even thorium and uranium isotopes at several excitation energies. In order to understand the driving effects behind the presence of third minima, we study the interplay between pairing and shell effects.

    Methods: We use the finite-temperature superfluid nuclear density functional theory. We consider two Skyrme energy density functionals: a traditional functional SkM and a recent functional UNEDF1 optimized for fission studies.

    Results: We predict very shallow or no third minima in the potential-energy surfaces of 232Th and 232U. In the lighter Th and U isotopes with N = 136 and 138, the third minima are better developed. We show that the reflection-asymmetric configurations around the third minimum can be associated with dimolecular states involving the spherical doubly magic 132Sn and a lighter deformed Zr or Mo fragment. The potential-energy surfaces for 228,232Th and 232U at several excitation energies are presented. We also study isotopic chains to demonstrate the evolution of the depth of the third minimum with neutron number.

    Conclusions: We show that the neutron shell effect that governs the existence of the dimolecular states around the third minimum is consistent with the spherical-to-deformed shape transition in the Zr andMo isotopes around N = 58.We demonstrate that the depth of the third minimum is sensitive to the excitation energy of the nucleus. In particular, the thermal reduction of pairing, and related enhancement of shell effects, at small excitation energies help to develop deeper third minima. At large excitation energies, shell effects are washed out and third minima disappear altogether.

  4. On the use of consistent approximations for the optimal design of beams

    SciTech Connect (OSTI)

    Polak, E.; Neto, C.K.

    1994-12-31T23:59:59.000Z

    Most optimal design problems can only be solved through discretization. One solution strategy is to expand the original problem into an infinite sequence of finite dimensional, approximating nonlinear programming problems, which can be solved using standard algorithms. In this paper, an expansion strategy based on the concept of consistent approximations is proposed for certain optimal beam design problems, where the beam is modelled using Euler-Bernoulli beam theory. It is shown that any accumulation point of the sequence of the stationary points of the family of approximating problems is a stationary point of the original, infinite-dimensional problem. Numerical results are presented for problems of optimal design of fixed beams.

  5. A thermodynamically consistent Ginzburg-Landau model for superfluid transition in liquid helium

    E-Print Network [OSTI]

    Alessia Berti; Valeria Berti

    2012-11-15T23:59:59.000Z

    In this paper we propose a thermodynamically consistent model for superfluid-normal phase transition in liquid helium, accounting for variations of temperature and density. The phase transition is described by means of an order parameter, according to the Ginzburg-Landau theory, emphasizing the analogies between superfluidity and superconductivity. The normal component of the velocity is assumed to be compressible and the usual phase diagram of liquid helium is recovered. Moreover, the continuity equation leads to a dependence between density and temperature in agreement with the experimental data.

  6. Short Distance Physics and the Consistency Relation for Scalar and Tensor Fluctuations in the Inflationary Universe

    E-Print Network [OSTI]

    Lam Hui; William H. Kinney

    2002-05-30T23:59:59.000Z

    Recent discussions suggest the possibility that short distance physics can significantly modify the behavior of quantum fluctuations in the inflationary universe, and alter the standard large scale structure predictions. Such modifications can be viewed as due to a different choice of the vacuum state. We show that such changes generally lead to violations of the well-known consistency relation between the scalar to tensor ratio and the tensor spectral index. Vacuum effects can introduce an observable modulation to the usual predictions for the scalar and tensor power spectra.

  7. Synchronization in node of complex networks consist of complex chaotic system

    SciTech Connect (OSTI)

    Wei, Qiang, E-mail: qiangweibeihua@163.com [Beihua University computer and technology College, BeiHua University, Jilin, 132021, Jilin (China); Digital Images Processing Institute of Beihua University, BeiHua University, Jilin, 132011, Jilin (China); Faculty of Electronic Information and Electrical Engineering, Dalian University of Technology, Dalian, 116024 (China); Xie, Cheng-jun [Beihua University computer and technology College, BeiHua University, Jilin, 132021, Jilin (China); Digital Images Processing Institute of Beihua University, BeiHua University, Jilin, 132011, Jilin (China); Liu, Hong-jun [School of Information Engineering, Weifang Vocational College, Weifang, 261041 (China); Li, Yan-hui [The Library, Weifang Vocational College, Weifang, 261041 (China)

    2014-07-15T23:59:59.000Z

    A new synchronization method is investigated for node of complex networks consists of complex chaotic system. When complex networks realize synchronization, different component of complex state variable synchronize up to different scaling complex function by a designed complex feedback controller. This paper change synchronization scaling function from real field to complex field for synchronization in node of complex networks with complex chaotic system. Synchronization in constant delay and time-varying coupling delay complex networks are investigated, respectively. Numerical simulations are provided to show the effectiveness of the proposed method.

  8. Modelling Starburst in HII galaxies: From chemical to spectro-photometric evolutionary self-consistent models

    E-Print Network [OSTI]

    M. L. Martin-Manjon; M. Molla; A. I. Diaz; R. Terlevich

    2008-10-13T23:59:59.000Z

    We have computed a series of realistic and self-consistent models that reproduce the properties of HII galaxies. The emitted spectrum of HII galaxies is reproduced by means of the photoionization code CLOUDY, using as ionizing spectrum the spectral energy distribution of the modelled HII galaxy, calculated using new and updated stellar population synthesis model (PopStar, Molla et al. 08) This, in turn, is calculated according to a star formation history and a metallicity evolution given by a chemical evolution code. Our technique reproduces observed abundances, diagnostic diagrams, colours and equivalent width vs. colour relations for local HII galaxies

  9. BILIWG: Consistent "Figures of Merit" (Presentation) | 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't Your Destiny: The FutureComments fromof EnergyBILIWG: Consistent "Figures of

  10. Title 43 CFR 1610.3-2 Consistency Requirements | 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 YouKizildere IRaghuraji Agro Industries PvtStratosolarTharaldson EthanolTillson,OpenOpen| OpenConsistency Requirements Jump

  11. ThermoElectric Transport Properties of a Chain of Quantum Dots with Self-Consistent Reservoirs

    E-Print Network [OSTI]

    Philippe A. Jacquet

    2009-02-13T23:59:59.000Z

    We introduce a model for charge and heat transport based on the Landauer-Buttiker scattering approach. The system consists of a chain of $N$ quantum dots, each of them being coupled to a particle reservoir. Additionally, the left and right ends of the chain are coupled to two particle reservoirs. All these reservoirs are independent and can be described by any of the standard physical distributions: Maxwell-Boltzmann, Fermi-Dirac and Bose-Einstein. In the linear response regime, and under some assumptions, we first describe the general transport properties of the system. Then we impose the self-consistency condition, i.e. we fix the boundary values (T_L,\\mu_L) and (T_R,mu_R), and adjust the parameters (T_i,mu_i), for i = 1,...,N, so that the net average electric and heat currents into all the intermediate reservoirs vanish. This condition leads to expressions for the temperature and chemical potential profiles along the system, which turn out to be independent of the distribution describing the reservoirs. We also determine the average electric and heat currents flowing through the system and present some numerical results, using random matrix theory, showing that these currents are typically governed by Ohm and Fourier laws.

  12. Hazard consistent structural demands and in-structure design response spectra

    SciTech Connect (OSTI)

    Houston, Thomas W [Los Alamos National Laboratory; Costantino, Michael C [Los Alamos National Laboratory; Costantino, Carl J [Los Alamos National Laboratory

    2009-01-01T23:59:59.000Z

    Current analysis methodology for the Soil Structure Interaction (SSI) analysis of nuclear facilities is specified in ASCE Standard 4. This methodology is based on the use of deterministic procedures with the intention that enough conservatism is included in the specified procedures to achieve an 80% probability of non-exceedance in the computed response of a Structure, System. or Component for given a mean seismic design input. Recently developed standards are aimed at achieving performance-based, risk consistent seismic designs that meet specified target performance goals. These design approaches rely upon accurately characterizing the probability (hazard) level of system demands due to seismic loads consistent with Probabilistic Seismic Hazard Analyses. This paper examines the adequacy of the deterministic SSI procedures described in ASCE 4-98 to achieve an 80th percentile of Non-Exceedance Probability (NEP) in structural demand, given a mean seismic input motion. The study demonstrates that the deterministic procedures provide computed in-structure response spectra that are near or greater than the target 80th percentile NEP for site profiles other than those resulting in high levels of radiation damping. The deterministic procedures do not appear to be as robust in predicting peak accelerations, which correlate to structural demands within the structure.

  13. False vacuum decay by self-consistent bounces in four dimensions

    E-Print Network [OSTI]

    Jurgen Baacke; Nina Kevlishvili

    2006-10-31T23:59:59.000Z

    We compute bounce solutions describing false vacuum decay in a Phi**4 model in four dimensions with quantum back-reaction. The back-reaction of the quantum fluctuations on the bounce profiles is computed in the one-loop and Hartree approximations. This is to be compared with the usual semiclassical approach where one computes the profile from the classical action and determines the one-loop correction from this profile. The computation of the fluctuation determinant is performed using a theorem on functional determinants, in addition we here need the Green' s function of the fluctuation operator in oder to compute the quantum back-reaction. As we are able to separate from the determinant and from the Green' s function the leading perturbative orders, we can regularize and renormalize analytically, in analogy of standard perturbation theory. The iteration towards self-consistent solutions is found to converge for some range of the parameters. Within this range the corrections to the semiclassical action are at most a few percent, the corrections to the transition rate can amount to several orders of magnitude. The strongest deviations happen for large couplings, as to be expected. Beyond some limit, there are no self-consistent bounce solutions.

  14. False vacuum decay by self-consistent bounces in four dimensions

    SciTech Connect (OSTI)

    Baacke, Juergen; Kevlishvili, Nina [Institut fuer Physik, Universitaet Dortmund, D - 44221 Dortmund (Germany); Institut fuer Physik, Universitaet Dortmund, D - 44221 Dortmund (Germany) and Andronikashvili Institute of Physics, GAS, 0177 Tbilisi (Georgia)

    2007-02-15T23:59:59.000Z

    We compute bounce solutions describing false vacuum decay in a {phi}{sup 4} model in four dimensions with quantum backreaction. The backreaction of the quantum fluctuations on the bounce profiles is computed in the one-loop and Hartree approximations. This is to be compared with the usual semiclassical approach where one computes the profile from the classical action and determines the one-loop correction from this profile. The computation of the fluctuation determinant is performed using a theorem on functional determinants, in addition we here need the Green's function of the fluctuation operator in oder to compute the quantum backreaction. As we are able to separate from the determinant and from the Gree n's function the leading perturbative orders, we can regularize and renormalize analytically, in analogy of standard perturbation theory. The iteration towards self-consistent solutions is found to converge for some range of the parameters. Within this range the corrections to the semiclassical action are at most a few percent, the corrections to the transition rate can amount to several orders of magnitude. The strongest deviations happen for large couplings, as to be expected. The transition rates are reduced for the one-loop backreaction, for the Hartree backreaction they are reduced for {alpha} < or approx. 0.5 and enhanced for larger values of {alpha}. Beyond some limit, there are no self-consistent bounce solutions.

  15. Radio-frequency sheaths physics: Experimental characterization on Tore Supra and related self-consistent modeling

    SciTech Connect (OSTI)

    Jacquot, Jonathan; Colas, Laurent, E-mail: laurent.colas@cea.fr; Corre, Yann; Goniche, Marc; Gunn, Jamie; Kubi?, Martin [CEA, IRFM, F-13108 saint-Paul-Lez-Durance (France); Milanesio, Daniele [Department of Electronics Politecnico di Torino, Torino (Italy); Heuraux, Stéphane [IJL UMR 7198, U. de Lorraine P2M, Fac. Des Sciences, BP 70239, F-54506 Vandoeuvre Cedex (France)

    2014-06-15T23:59:59.000Z

    During the 2011 experimental campaign, one of the three ion cyclotron resonance heating (ICRH) antennas in the Tore Supra tokamak was equipped with a new type of Faraday screen (FS). The new design aimed at minimizing the integrated parallel electric field over long field lines as well as increasing the heat exhaust capability of the actively cooled screen. It proved to be inefficient for attenuating the radio-frequency (RF)-sheaths on the screen itself on the contrary to the heat exhaust concept that allowed operation despite higher heat fluxes on the antenna. In parallel, a new approach has been proposed to model self-consistently RF sheaths: the SSWICH (Self-consistent Sheaths and Waves for IC Heating) code. Simulations results from SSWICH coupled with the TOPICA antenna code were able to reproduce the difference between the two FS designs and part of the spatial pattern of heat loads and Langmuir probe floating potential. The poloidal pattern is a reliable result that mainly depends on the electrical design of the antenna while the radial pattern is on the contrary highly sensitive to loosely constrained parameters such as perpendicular conductivity that generates a DC current circulation from the private region inside the antenna limiters to the free scrape off layer outside these limiters. Moreover, the cantilevered bars seem to be the element in the screen design that enhanced the plasma potential.

  16. Self-consistent description of single-particle levels of magic nuclei

    E-Print Network [OSTI]

    N. V. Gnezdilov; I. N. Borzov; E. E. Saperstein; S. V. Tolokonnikov

    2014-04-04T23:59:59.000Z

    Single-particle levels of seven magic nuclei are calculated within the Energy Density Functional (EDF) method by Fayans et al. Three versions of the EDF are used, the initial Fayans functional DF3 and its two variations, DF3-a and DF3-b, with different values of spin-orbit parameters. Comparison is made with predictions of the Skyrme-Hartree-Fock method with the HFB-17 functional. For the DF3-a functional, phonon coupling (PC) corrections to single-particle energies are found self-consistently with an approximate account for the tadpole diagram. Account for the PC corrections improves agreement with the data for heavy nuclei, e.g. for 208 Pb. On the other hand, for lighter nuclei, e.g. 40,48 Ca, PC corrections make the agreement a little worse. As estimations show, the main reason is that the approximation we use for the tadpole term is less accurate for the light nuclei.

  17. Polygonal web representation for higher order correlation functions of consistent polygonal Markov fields in the plane

    E-Print Network [OSTI]

    Tomasz Schreiber

    2009-05-02T23:59:59.000Z

    We consider polygonal Markov fields originally introduced by Arak and Surgailis (1982,1989). Our attention is focused on fields with nodes of order two, which can be regarded as continuum ensembles of non-intersecting contours in the plane, sharing a number of salient features with the two-dimensional Ising model. The purpose of this paper is to establish an explicit stochastic representation for the higher-order correlation functions of polygonal Markov fields in their consistency regime. The representation is given in terms of the so-called crop functionals (defined by a Moebius-type formula) of polygonal webs which arise in a graphical construction dual to that giving rise to polygonal fields. The proof of our representation formula goes by constructing a martingale interpolation between the correlation functions of polygonal fields and crop functionals of polygonal webs.

  18. Improved master equation approach to quantum transport: From Born to self-consistent Born approximation

    E-Print Network [OSTI]

    Jun Li; Jinshuang Jin; Xin-Qi Li; YiJing Yan

    2014-06-26T23:59:59.000Z

    Beyond the second-order Born approximation, we develop an improved master equation approach to quantum transport by virtue of a self-consistent Born approximation. The basic idea is replacing the free Green's function in the tunneling self-energy by an effective reduced propagator under the Born approximation. We found that the effect of this simple improvement is remarkable, for instance, it can not only recover the exact result of noninteracting transport under arbitrary voltages, but also predict the challenging nonequilibrium Kondo effect. In addition to having an elegant structure, the application convenience and accuracy of the proposed scheme, as demonstrated by the examples in this work, may suggest it a useful tool for quantum transports.

  19. Quantum Chemistry, and Eclectic Mix: From Silicon Carbide to Size Consistency

    SciTech Connect (OSTI)

    Jamie Marie Rintelman

    2004-12-19T23:59:59.000Z

    Chemistry is a field of great breadth and variety. It is this diversity that makes for both an interesting and challenging field. My interests have spanned three major areas of theoretical chemistry: applications, method development, and method evaluation. The topics presented in this thesis are as follows: (1) a multi-reference study of the geometries and relative energies of four atom silicon carbide clusters in the gas phase; (2) the reaction of acetylene on the Si(100)-(2x1) surface; (3) an improvement to the Effective Fragment Potential (EFP) solvent model to enable the study of reactions in both aqueous and nonaqueous solution; and (4) an evaluation of the size consistency of Multireference Perturbation Theory (MRPT). In the following section, the author briefly discusses two topics central to, and present throughout, this thesis: Multi-reference methods and Quantum Mechanics/Molecular Mechanics (QM/MM) methods.

  20. Self-Consistent parallel multi bunch beam-beam simulation using a grid-multipole method

    E-Print Network [OSTI]

    Jones, F; Pieloni, T

    2010-01-01T23:59:59.000Z

    The simulation code COMBI has been developed to enable the study of coherent beam-beam effects in the full collision scenario of the LHC, with multiple bunches interacting at multiple crossing points over many turns. The parallel version of COMBI was first implemented using a soft-Gaussian collision model which entails minimal communication between worker processes. Recently we have extended the code to a fully self-consistent collision model using a Grid-Multipole method, which allows worker processes to exchange charge and field information in a compact form which minimizes communication overhead. In this paper we describe the Grid-Multipole technique and its adaptation to the parallel environment through pre- and post-processing of charge and grid data. Performance measurements in a Myrinet cluster environment will be given.

  1. Macro-particle FEL model with self-consistent spontaneous radiation

    E-Print Network [OSTI]

    Litvinenko, Vladimir N

    2015-01-01T23:59:59.000Z

    Spontaneous radiation plays an important role in SASE FELs and storage ring FELs operating in giant pulse mode. It defines the correlation function of the FEL radiation as well as its many spectral features. Simulations of these systems using randomly distributed macro-particles with charge much higher that of a single electron create the problem of anomalously strong spontaneous radiation, limiting the capabilities of many FEL codes. In this paper we present a self-consistent macro-particle model which provided statistically exact simulation of multi-mode, multi-harmonic and multi-frequency short-wavelength 3-D FELs including the high power and saturation effects. The use of macro-particle clones allows both spontaneous and induced radiation to be treated in the same fashion. Simulations using this model do not require a seed and provide complete temporal and spatial structure of the FEL optical field.

  2. Representation independent algorithms for molecular response calculations in time-dependent self-consistent field theories

    SciTech Connect (OSTI)

    Tretiak, Sergei [Los Alamos National Laboratory

    2008-01-01T23:59:59.000Z

    Four different numerical algorithms suitable for a linear scaling implementation of time-dependent Hartree-Fock and Kohn-Sham self-consistent field theories are examined. We compare the performance of modified Lanczos, Arooldi, Davidson, and Rayleigh quotient iterative procedures to solve the random-phase approximation (RPA) (non-Hermitian) and Tamm-Dancoff approximation (TDA) (Hermitian) eigenvalue equations in the molecular orbital-free framework. Semiempirical Hamiltonian models are used to numerically benchmark algorithms for the computation of excited states of realistic molecular systems (conjugated polymers and carbon nanotubes). Convergence behavior and stability are tested with respect to a numerical noise imposed to simulate linear scaling conditions. The results single out the most suitable procedures for linear scaling large-scale time-dependent perturbation theory calculations of electronic excitations.

  3. Methods for consistent forewarning of critical events across multiple data channels

    DOE Patents [OSTI]

    Hively, Lee M.

    2006-11-21T23:59:59.000Z

    This invention teaches further method improvements to forewarn of critical events via phase-space dissimilarity analysis of data from biomedical equipment, mechanical devices, and other physical processes. One improvement involves conversion of time-serial data into equiprobable symbols. A second improvement is a method to maximize the channel-consistent total-true rate of forewarning from a plurality of data channels over multiple data sets from the same patient or process. This total-true rate requires resolution of the forewarning indications into true positives, true negatives, false positives and false negatives. A third improvement is the use of various objective functions, as derived from the phase-space dissimilarity measures, to give the best forewarning indication. A fourth improvement uses various search strategies over the phase-space analysis parameters to maximize said objective functions. A fifth improvement shows the usefulness of the method for various biomedical and machine applications.

  4. Community consistency determines the stability transition window of power-grid nodes

    E-Print Network [OSTI]

    Kim, Heetae; Holme, Petter

    2015-01-01T23:59:59.000Z

    The synchrony of electric power systems is important in order to maintain stable electricity supply. Recently, the measure basin stability was introduced to quantify a node's ability to recover its synchronization when perturbed. In this work, we focus on how basin stability depends on the coupling strength between nodes. We use the Chilean power grid as a case study. In general, the basin stability goes from zero to one as the coupling strength increases. However, this transition does happen for the same values for different nodes. By understanding the transition for individual nodes, we can further characterize their role in the power-transmission dynamics. We find that nodes with an exceptionally large transition window also have a low community consistency. In other words, they are hard to classify into one community when applying a community detection algorithm to the network. This also gives an efficient way to identify nodes with a long transition window (which is a computationally time-consuming task)...

  5. Global helioseismic evidence for a deeply penetrating Solar meridional flow consisting of multiple flow cells

    E-Print Network [OSTI]

    Schad, A; Roth, M

    2013-01-01T23:59:59.000Z

    We use a novel global helioseismic analysis method to infer the meridional flow in the deep Solar interior. The method is based on the perturbation of eigenfunctions of Solar p modes due to meridional flow. We apply this method to time series obtained from Dopplergrams measured by the Michelson Doppler Imager aboard the Solar and Heliospheric Observatory (SOHO) covering the observation period 2004-2010. Our results show evidence that the meridional flow reaches down to the base of the convection zone. The flow profile has a complex spatial structure consisting of multiple flow cells distributed in depth and latitude. Toward the Solar surface, our results are in good agreement with flow measurements from local helioseismology.

  6. Physically consistent simulation of mesoscale chemical kinetics: The non-negative FIS-{alpha} method

    SciTech Connect (OSTI)

    Dana, Saswati, E-mail: saswatid@rishi.serc.iisc.ernet.in [Supercomputer Education and Research Centre, Indian Institute of Science, Bangalore 560012 (India); Raha, Soumyendu, E-mail: raha@serc.iisc.ernet.in [Supercomputer Education and Research Centre, Indian Institute of Science, Bangalore 560012 (India)

    2011-10-01T23:59:59.000Z

    Biochemical pathways involving chemical kinetics in medium concentrations (i.e., at mesoscale) of the reacting molecules can be approximated as chemical Langevin equations (CLE) systems. We address the physically consistent non-negative simulation of the CLE sample paths as well as the issue of non-Lipschitz diffusion coefficients when a species approaches depletion and any stiffness due to faster reactions. The non-negative Fully Implicit Stochastic {alpha} (FIS {alpha}) method in which stopped reaction channels due to depleted reactants are deleted until a reactant concentration rises again, for non-negativity preservation and in which a positive definite Jacobian is maintained to deal with possible stiffness, is proposed and analysed. The method is illustrated with the computation of active Protein Kinase C response in the Protein Kinase C pathway.

  7. Method for using global optimization to the estimation of surface-consistent residual statics

    DOE Patents [OSTI]

    Reister, David B. (Knoxville, TN); Barhen, Jacob (Oak Ridge, TN); Oblow, Edward M. (Knoxville, TN)

    2001-01-01T23:59:59.000Z

    An efficient method for generating residual statics corrections to compensate for surface-consistent static time shifts in stacked seismic traces. The method includes a step of framing the residual static corrections as a global optimization problem in a parameter space. The method also includes decoupling the global optimization problem involving all seismic traces into several one-dimensional problems. The method further utilizes a Stochastic Pijavskij Tunneling search to eliminate regions in the parameter space where a global minimum is unlikely to exist so that the global minimum may be quickly discovered. The method finds the residual statics corrections by maximizing the total stack power. The stack power is a measure of seismic energy transferred from energy sources to receivers.

  8. Leaching characteristics of the metal waste form from the electrometallurgical treatment process: Product consistency testing

    SciTech Connect (OSTI)

    Johnson, S. G.; Keiser, D. D.; Frank, S. M.; DiSanto, T.; Noy, M.

    1999-11-11T23:59:59.000Z

    Argonne National Laboratory is developing an electrometallurgical treatment for spent fuel from the experimental breeder reactor II. A product of this treatment process is a metal waste form that incorporates the stainless steel cladding hulls, zirconium from the fuel and the fission products that are noble to the process, i.e., Tc, Ru, Nb, Pd, Rh, Ag. The nominal composition of this waste form is stainless steel/15 wt% zirconium/1--4 wt% noble metal fission products/1--2 wt % U. Leaching results are presented from several tests and sample types: (1) 2 week monolithic immersion tests on actual metal waste forms produced from irradiated cladding hulls, (2) long term (>2 years) pulsed flow tests on samples containing technetium and uranium and (3) crushed sample immersion tests on cold simulated metal waste form samples. The test results will be compared and their relevance for waste form product consistency testing discussed.

  9. A Simplified Self-Consistent Probabilities Framework to Characterize Percolation Phenomena on Interdependent Networks : An Overview

    E-Print Network [OSTI]

    Feng, Ling; Hu, Yanqing

    2015-01-01T23:59:59.000Z

    Interdependent networks are ubiquitous in our society, ranging from infrastructure to economics, and the study of their cascading behaviors using percolation theory has attracted much attention in the recent years. To analyze the percolation phenomena of these systems, different mathematical frameworks have been proposed including generating functions, eigenvalues among some others. These different frameworks approach the phase transition behaviors from different angles, and have been very successful in shaping the different quantities of interest including critical threshold, size of the giant component, order of phase transition and the dynamics of cascading. These methods also vary in their mathematical complexity in dealing with interdependent networks that have additional complexity in terms of the correlation among different layers of networks or links. In this work, we review a particular approach of simple self-consistent probability equations, and illustrate that it can greatly simplify the mathemati...

  10. Self-consistent electrodynamics of large-area high-frequency capacitive plasma discharge

    SciTech Connect (OSTI)

    Chen Zhigang; Rauf, Shahid; Collins, Ken [Applied Materials, Inc., 974 E. Arques Avenue, Sunnyvale, California 94085 (United States)

    2010-10-15T23:59:59.000Z

    Capacitively coupled plasmas (CCPs) generated using high frequency (3-30 MHz) and very high frequency (30-300 MHz) radio-frequency (rf) sources are used for many plasma processing applications including thin film etching and deposition. When chamber dimensions become commensurate with the effective rf wavelength in the plasma, electromagnetic wave effects impose a significant influence on plasma behavior. Because the effective rf wavelength in plasma depends upon both rf and plasma process conditions (e.g., rf power and gas pressure), a self-consistent model including both the rf power delivery system and the plasma discharge is highly desirable to capture a more complete physical picture of the plasma behavior. A three-dimensional model for self-consistently studying both electrodynamic and plasma dynamic behavior of large-area (Gen 10, >8 m{sup 2}) CCP is described in this paper. This model includes Maxwell's equations and transport equations for charged and neutral species, which are coupled and solved in the time domain. The complete rf plasma discharge chamber including the rf power delivery subsystem, rf feed, electrodes, and the plasma domain is modeled as an integrated system. Based on this full-wave solution model, important limitations for processing uniformity imposed by electromagnetic wave propagation effects in a large-area CCP (3.05x2.85 m{sup 2} electrode size) are studied. The behavior of H{sub 2} plasmas in such a reactor is examined from 13.56 to 200 MHz. It is shown that various rectangular harmonics of electromagnetic fields can be excited in a large-area rectangular reactor as the rf or power is increased. The rectangular harmonics can create not only center-high plasma distribution but also high plasma density at the corners and along the edges of the reactor.

  11. The dusty MOCASSIN: fully self-consistent 3D photoionisation and dust radiative transfer models

    E-Print Network [OSTI]

    B. Ercolano; M. J. Barlow; P. J. Storey

    2005-07-02T23:59:59.000Z

    We present the first 3D Monte Carlo (MC) photoionisation code to include a fully self-consistent treatment of dust radiative transfer (RT) within a photoionised region. This is the latest development (Version 2.0) of the gas-only photoionisation code MOCASSIN (Ercolano et al., 2003a), and employs a stochastic approach to the transport of radiation, allowing both the primary and secondary components of the radiation field to be treated self-consistently, whilst accounting for the scattering of radiation by dust grains mixed with the gas, as well as the absorption and emission of radiation by both the gas and the dust components. A set of rigorous benchmark tests have been carried out for dust-only spherically symmetric geometries and 2D disk configurations. MOCASSIN's results are found to be in agreement with those obtained by well established dust-only RT codes that employ various approaches to the solution of the RT problem. A model of the dust and of the photoionised gas components of the planetary nebula (PN) NGC 3918 is also presented as a means of testing the correct functioning of the RT procedures in a case where both gas and dust opacities are present. The two components are coupled via the heating of dust grains by the absorption of both UV continuum photons and resonance line photons emitted by the gas. The MOCASSIN results show agreement with those of a 1D dust and gas model of this nebula published previously, showing the reliability of the new code, which can be applied to a variety of astrophysical environments.

  12. A consistent, differential versus integral, method for measuring the delayed neutron yield in fissions

    SciTech Connect (OSTI)

    Flip, A. [CEA, Cadarache (France); Pang, H.F. [Tsinghua Univ., Beijing (China); D`Angelo, A. [ENEA, Roma (Italy)

    1995-12-31T23:59:59.000Z

    Due to the persistent uncertainties: {approximately} 5 % (the uncertainty, here and there after, is at 1{sigma}) in the prediction of the `reactivity scale` ({beta}{sub eff}) for a fast power reactor, an international project was recently initiated in the framework of the OECD/NEA activities for reevaluation, new measurements and integral benchmarking of delayed neutron (DN) data and related kinetic parameters (principally {beta}{sub eff}). Considering that the major part of this uncertainty is due to uncertainties in the DN yields (v{sub d}) and the difficulty for further improvement of the precision in differential (e.g. Keepin`s method) measurements, an international cooperative strategy was adopted aiming at extracting and consistently interpreting information from both differential (nuclear) and integral (in reactor) measurements. The main problem arises from the integral side; thus the idea was to realize {beta}{sub eff} like measurements (both deterministic and noise) in `clean` assemblies. The `clean` calculational context permitted the authors to develop a theory allowing to link explicitly this integral experimental level with the differential one, via a unified `Master Model` which relates v{sub d} and measurables quantities (on both levels) linearly. The combined error analysis is consequently largely simplified and the final uncertainty drastically reduced (theoretically, by a factor {radical}3). On the other hand the same theoretical development leading to the `Master Model`, also resulted in a structured scheme of approximations of the general (stochastic) Boltzmann equation allowing a consistent analysis of the large range of measurements concerned (stochastic, dynamic, static ... ). This paper is focused on the main results of this theoretical development and its application to the analysis of the Preliminary results of the BERENICE program ({beta}{sub eff} measurements in MASURCA, the first assembly in CADARACHE-FRANCE).

  13. Building-related symptoms among U.S. office workers and risks factors for moisture and contamination: Preliminary analyses of U.S. EPA BASE Data

    SciTech Connect (OSTI)

    Mendell, Mark J.; Cozen, Myrna

    2002-09-01T23:59:59.000Z

    The authors assessed relationships between health symptoms in office workers and risk factors related to moisture and contamination, using data collected from a representative sample of U.S. office buildings in the U.S. EPA BASE study. Methods: Analyses assessed associations between three types of weekly, workrelated symptoms-lower respiratory, mucous membrane, and neurologic-and risk factors for moisture or contamination in these office buildings. Multivariate logistic regression models were used to estimate the strength of associations for these risk factors as odds ratios (ORs) adjusted for personal-level potential confounding variables related to demographics, health, job, and workspace. A number of risk factors were associated (e.g., 95% confidence limits excluded 1.0) significantly with small to moderate increases in one or more symptom outcomes. Significantly elevated ORs for mucous membrane symptoms were associated with the following risk factors: presence of humidification system in good condition versus none (OR = 1.4); air handler inspection annually versus daily (OR = 1.6); current water damage in the building (OR = 1.2); and less than daily vacuuming in study space (OR = 1.2). Significantly elevated ORs for lower respiratory symptoms were associated with: air handler inspection annually versus daily (OR = 2.0); air handler inspection less than daily but at least semi-annually (OR=1.6); less than daily cleaning of offices (1.7); and less than daily vacuuming of the study space (OR = 1.4). Only two statistically significant risk factors for neurologic symptoms were identified: presence of any humidification system versus none (OR = 1.3); and less than daily vacuuming of the study space (OR = 1.3). Dirty cooling coils, dirty or poorly draining drain pans, and standing water near outdoor air intakes, evaluated by inspection, were not identified as risk factors in these analyses, despite predictions based on previous findings elsewhere, except that very dirty cooling coils were associated with a nonsignificant increase in lower respiratory symptoms. These preliminary findings suggest that some factors that indicate risks for moisture or contamination in office buildings may have adverse effects on respiratory or neurologic health of office workers. More refined analyses are underway that will include these risk factors in simultaneous multivariate models along with additional risk factors that may be confounders, such as ventilation rate and indoor temperature. Future analyses will also use more refined metrics for both health outcomes and environmental risks, as well as assess risk in susceptible sub-groups.

  14. Consistent definitions of flux and the dual superconductivity parameters in SU(2) lattice gauge theory

    E-Print Network [OSTI]

    Haymaker, R W; Haymaker, Richard W.; Matsuki, Takayuki

    2005-01-01T23:59:59.000Z

    We revisit the confinement problem in maximal Abelian gauge SU(2) gluodynamics as a dual superconductor through the study of the dual Abrikosov vortex. There are three effects that have not been included in previous studies. We employ a definition of flux that satisfies the exact Ward-Takahashi identity giving exact electric Maxwell equations for lattice averages. Second we modify the standard definition of magnetic current to give consistent magnetic Maxwell equations. Finally we point out that the dual Ginzburg-Landau-Higgs model is an oversimplification of the physics of the system because of the presence of significant electric currents. As a result we need a third parameter to describe the vortex in addition to the standard ones, i.e., the London penetration depth and the coherence length. Without a complete model at our disposal, we estimate the values of these three parameters for $\\beta = 2.5115$ on a $32^4$ lattice. As a digression, we also show that the truncation of monopoles to the percolating clu...

  15. Universal consistent truncation for 6d/7d gauge/gravity duals

    E-Print Network [OSTI]

    Achilleas Passias; Andrea Rota; Alessandro Tomasiello

    2015-06-17T23:59:59.000Z

    Recently, AdS_7 solutions of IIA supergravity have been classified; there are infinitely many of them, whose expression is known analytically, and with internal space of S^3 topology. Their field theory duals are six-dimensional (1,0) SCFT's. In this paper we show that for each of these AdS_7 solutions there exists a consistent truncation from massive IIA supergravity to minimal gauged supergravity in seven dimensions. This theory has an SU(2) gauge group, and a single scalar, whose value is related to a certain distortion of the internal S^3. This explains the universality observed in recent work on AdS_5 and AdS_4 solutions dual to compactifications of the (1,0) SCFT_6's. Thanks to previous work on the minimal gauged supergravity, the truncation also implies the existence of holographic RG-flows connecting those solutions to the AdS_7 vacuum, as well as new classes of IIA AdS_3 solutions.

  16. Universal consistent truncation for 6d/7d gauge/gravity duals

    E-Print Network [OSTI]

    Passias, Achilleas; Tomasiello, Alessandro

    2015-01-01T23:59:59.000Z

    Recently, AdS_7 solutions of IIA supergravity have been classified; there are infinitely many of them, whose expression is known analytically, and with internal space of S^3 topology. Their field theory duals are six-dimensional (1,0) SCFT's. In this paper we show that for each of these AdS_7 solutions there exists a consistent truncation from massive IIA supergravity to minimal gauged supergravity in seven dimensions. This theory has an SU(2) gauge group, and a single scalar, whose value is related to a certain distortion of the internal S^3. This explains the universality observed in recent work on AdS_5 and AdS_4 solutions dual to compactifications of the (1,0) SCFT_6's. Thanks to previous work on the minimal gauged supergravity, the truncation also implies the existence of holographic RG-flows connecting those solutions to the AdS_7 vacuum, as well as new classes of IIA AdS_3 solutions.

  17. Shedding light on the prompt high efficiency paradox - self consistent modeling of GRB afterglows

    E-Print Network [OSTI]

    Beniamini, Paz; Duran, Rodolfo Barniol; Piran, Tsvi

    2015-01-01T23:59:59.000Z

    We examine GRBs with both Fermi-LAT and X-ray afterglow data. Assuming that the 100MeV (LAT) emission is radiation from cooled electrons accelerated by external shocks, we show that the kinetic energy of the blast wave estimated from the 100MeV flux is 50 times larger than the one estimated from the X-ray flux. This can be explained if either: i) electrons radiating at X-rays are significantly cooled by SSC (suppressing the synchrotron flux above the cooling frequency) or ii) if the X-ray emitting electrons, unlike those emitting at 100MeV energies, are in the slow cooling regime. In both cases the X-ray flux is no longer an immediate proxy of the blast wave kinetic energy. We model the LAT, X-ray and optical data and show that in general these possibilities are consistent with the data, and explain the apparent disagreement between X-ray and LAT observations. All possible solutions require weak magnetic fields: $10^{-6}energy...

  18. Effects of temperature and radiation on the nuclear waste glass product consistency leach test

    SciTech Connect (OSTI)

    Crawford, C.L.; Bibler, N.E.

    1993-01-01T23:59:59.000Z

    Previous leach studies carried out with monolithic glass samples have shown that glass dissolution rates increase with increasing temperature and may or may not increase on exposure to external gamma radiolysis. In this study we have investigated the effects of temperature (70--1200[degrees]C) and radiation on the dissolution of simulated radioactive waste glasses using the Product Consistency Test (PCT). The PCT is a seven day, crushed glass leach test in deionized water that is carried out at 9OO[degrees]C. To date our results indicate no significant effect of external Co--60 gamma radiation when testing various simulated waste glasses at 90[degrees]C in a wellinsulated compartment within a Gammacell 220 irradiation unit. The temperature dependence for glass dissolution clearly exhibits Arrheniustype behavior for two of the three glasses tested. For the third glass the dissolution decreases at the higher temperatures, probably due to saturation effects. Actual radioactive waste glasses will be investigated later as part of this study.

  19. Effects of temperature and radiation on the nuclear waste glass product consistency leach test

    SciTech Connect (OSTI)

    Crawford, C.L.; Bibler, N.E.

    1993-04-01T23:59:59.000Z

    Previous leach studies carried out with monolithic glass samples have shown that glass dissolution rates increase with increasing temperature and may or may not increase on exposure to external gamma radiolysis. In this study we have investigated the effects of temperature (70--1200{degrees}C) and radiation on the dissolution of simulated radioactive waste glasses using the Product Consistency Test (PCT). The PCT is a seven day, crushed glass leach test in deionized water that is carried out at 9OO{degrees}C. To date our results indicate no significant effect of external Co--60 gamma radiation when testing various simulated waste glasses at 90{degrees}C in a wellinsulated compartment within a Gammacell 220 irradiation unit. The temperature dependence for glass dissolution clearly exhibits Arrheniustype behavior for two of the three glasses tested. For the third glass the dissolution decreases at the higher temperatures, probably due to saturation effects. Actual radioactive waste glasses will be investigated later as part of this study.

  20. Consistency of Perfect Fluidity and Jet Quenching in semi-Quark-Gluon Monopole Plasmas

    E-Print Network [OSTI]

    Jiechen Xu; Jinfeng Liao; Miklos Gyulassy

    2015-03-31T23:59:59.000Z

    We utilize a new framework, CUJET3.0, to deduce the energy and temperature dependence of jet transport parameter, $\\hat{q}(E>10\\; {\\rm GeV},T)$, from a combined analysis of available data on nuclear modification factor and azimuthal asymmetries from RHIC/BNL and LHC/CERN on high energy nuclear collisions. Extending a previous perturbative-QCD based jet energy loss model (known as CUJET2.0) with (2+1)D viscous hydrodynamic bulk evolution, this new framework includes three novel features of nonperturbative physics origin: (1) the Polyakov loop suppression of color-electric scattering (aka "semi-QGP" of Pisarski et al) and (2) the enhancement of jet scattering due to emergent magnetic monopoles near $T_c$ (aka "magnetic scenario" of Liao and Shuryak) and (3) thermodynamic properties constrained by lattice QCD data. CUJET3.0 reduces to v2.0 at high temperatures $T > 400$ MeV, but greatly enhances $\\hat{q}$ near the QCD deconfinement transition temperature range. This enhancement accounts well for the observed elliptic harmonics of jets with $p_T>10$ GeV. Extrapolating our data-constrained $\\hat{q}$ down to thermal energy scales, $E \\sim 2$ GeV, we find for the first time a remarkable consistency between high energy jet quenching and bulk perfect fluidity with $\\eta/s\\sim T^3/\\hat{q} \\sim 0.1$ near $T_c$.