National Library of Energy BETA

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  1. UO CLASSES FOR HIGH SCHOOL STUDENTS GENERAL DESCRIPTION

    E-Print Network [OSTI]

    Cina, Jeff

    that one of the UOCHSS instructors, Chris Doe, won the 4J School District's "Champion in Education" Award, UO Department of English Jane Cramer, UO Department of Political Science Chris Doe, UO Department of Psychology Hillary Nadeau, UO School of Education Clinton Sandvick, UO Department of History Nancy Shurtz, UO

  2. UO CLASSES FOR HIGH SCHOOL STUDENTS GENERAL DESCRIPTION

    E-Print Network [OSTI]

    Cina, Jeff

    that one of the UOCHSS instructors, Chris Doe, won the 4J School District's "Champion in Education" Award Department of Political Science Chris Doe, UO Department of Biology Michael Dreiling, UO Department of Education Clinton Sandvick, UO Department of History Nancy Shurtz, UO School of Law Merle Weiner, UO School

  3. UO CLASSES FOR HIGH SCHOOL STUDENTS GENERAL DESCRIPTION

    E-Print Network [OSTI]

    Cina, Jeff

    that one of the UOCHSS instructors, Chris Doe, won the 4J School District's "Champion in Education" Award Department of Political Science Chris Doe, UO Department of Biology Michael Dreiling, UO Department of Psychology Hillary Nadeau, UO School of Education Clinton Sandvick, UO Department of History COURSE SCHEDULE

  4. Fuel Performance Experiments on the Atomistic Level, Studying Fuel Through Engineered Single Crystal UO2

    SciTech Connect (OSTI)

    Burgett, Eric; Deo, Chaitanya; Phillpot, Simon

    2015-05-08

    Fuel Performance Experiments on the Atomistic Level, Studying Fuel Through Engineered Single Crystal UO2

  5. AVLIS modified direct denitration: UO{sub 3} powder evaluation

    SciTech Connect (OSTI)

    Slagle, O.D.; Davis, N.C.; Parchen, L.J.

    1994-02-01

    The evaluation study demonstrated that AVLIS-enriched uranium converted to UO{sub 3} can be used to prepare UO{sub 3} pellets having densities in the range required for commercial power reactor fuel. Specifically, the program has demonstrated that MDD (Modified Direct Denitration)-derived UO{sub 2} powders can be reduced to sinterable UO{sub 2} powder using reduction techniques that allow control of the final powder characteristics; the resulting UO{sub 2} powders can be processed/sintered using standard powder preparation and pellet fabrication techniques to yield pellets with densities greater than 96% TD; pellet microstructures appear similar to those of power reactor fuel, and because of the high final pellet densities, it is expected that they would remain stable during in-reactor operation; the results of the present study confirm the results of a similar study carried out in 1982 (Davis and Griffin 1992). The laboratory processes were selected on the basis that they could be scaled up to standard commercial fuel processing. However, larger scale testing may be required to establish techniques compatible with commercial fuel fabrication techniques.

  6. Thermal Reactions of Uranium Metal, UO2, U3O8, UF4, and UO2F2 with NF3 to Produce UF6

    SciTech Connect (OSTI)

    McNamara, Bruce K.; Scheele, Randall D.; Kozelisky, Anne E.; Edwards, Matthew K.

    2009-11-01

    he objective of this paper is to demonstrate that NF3 fluorinates uranium metal, UO2, UF4, UO3, U3O8, and UO2F2•2H2O to produce the volatile UF6 at temperatures between 100 and 500?C. Thermogravimetric reaction profiles are described that reflect changes in the uranium oxidation state and discrete chemical speciation. Differences in the onset temperatures for each system indicate that NF3-substrate interactions are important for the temperature at which NF3 reacts: U metal > UO3 > UO2 > UO2F2 > UF4 and in fact may indicate different fluorination mechanisms for these various substrates. These studies demonstrate that NF3 is a potential replacement fluorinating agent in the existing nuclear fuel cycle and in oft-proposed actinide volatility reprocessing.

  7. The UO Baker Downtown Center Getting Here and Parking

    E-Print Network [OSTI]

    ). Parking is in the lot on your left. · Fromtheeast: If on I-105 westbound, take Exit #2 and follow signs the UO Baker Downtown Center (on the corner of 10th and High). Parking is in the lot on your left Baker Downtown Center (on the corner of 10th and High). Parking is in the lot on your left. PARKING

  8. UO{sub 3} plant turnover - facility description document

    SciTech Connect (OSTI)

    Clapp, D.A.

    1995-01-01

    This document was developed to provide a facility description for those portions of the UO{sub 3} Facility being transferred to Bechtel Hanford Company, Inc. (BHI) following completion of facility deactivation. The facility and deactivated state condition description is intended only to serve as an overview of the plant as it is being transferred to BHI.

  9. Vendor Control UoW 1730 (Rev. 10/07)

    E-Print Network [OSTI]

    Brown, Sally

    Vendor Control Use Only UoW 1730 (Rev. 10/07) ACCOUNTING DETAIL U.S. Taxpayer ID Number 1. Vendor 6109 requires most recipients of payments for services performed to give taxpayer identification generally withhold taxes from taxable payments to a payee who does not furnish a taxpayer identification

  10. Density Functional Theory Calculations of Mass Transport in UO2

    SciTech Connect (OSTI)

    Andersson, Anders D.; Dorado, Boris; Uberuaga, Blas P.; Stanek, Christopher R.

    2012-06-26

    In this talk we present results of density functional theory (DFT) calculations of U, O and fission gas diffusion in UO{sub 2}. These processes all impact nuclear fuel performance. For example, the formation and retention of fission gas bubbles induce fuel swelling, which leads to mechanical interaction with the clad thereby increasing the probability for clad breach. Alternatively, fission gas can be released from the fuel to the plenum, which increases the pressure on the clad walls and decreases the gap thermal conductivity. The evolution of fuel microstructure features is strongly coupled to diffusion of U vacancies. Since both U and fission gas transport rates vary strongly with the O stoichiometry, it is also important to understand O diffusion. In order to better understand bulk Xe behavior in UO{sub 2{+-}x} we first calculate the relevant activation energies using DFT techniques. By analyzing a combination of Xe solution thermodynamics, migration barriers and the interaction of dissolved Xe atoms with U, we demonstrate that Xe diffusion predominantly occurs via a vacancy-mediated mechanism. Since Xe transport is closely related to diffusion of U vacancies, we have also studied the activation energy for this process. In order to explain the low value of 2.4 eV found for U migration from independent damage experiments (not thermal equilibrium) the presence of vacancy clusters must be included in the analysis. Next we investigate species transport on the (111) UO{sub 2} surface, which is motivated by the formation of small voids partially filled with fission gas atoms (bubbles) in UO{sub 2} under irradiation. Surface diffusion could be the rate-limiting step for diffusion of such bubbles, which is an alternative mechanism for mass transport in these materials. As expected, the activation energy for surface diffusion is significantly lower than for bulk transport. These results are further discussed in terms of engineering-scale fission gas release models. Finally, oxidation of UO{sub 2} and the importance of cluster formation for understanding thermodynamic and kinetic properties of UO{sub 2+x} are investigated.

  11. In Situ TEM Observation of Dislocation Evolutionin Polycrystalline UO2

    SciTech Connect (OSTI)

    L. F. HE; 1 M. A. KIRK; Argonne National Laboratory; J. Gan; T. R. ALLEN

    2014-10-01

    In situ transmission electron microscopy observation of polycrystalline UO2 (with average grain size of about 5 lm) irradiated with Kr ions at 600C and 800C was conducted to understand the radiation-induced dislocation evolution under the influence of grain boundaries. The dislocation evolution in the grain interior of polycrystalline UO2 was similar under Kr irradiation at different ion energies and temperatures. As expected, it was characterized by the nucleation and growth of dislocation loops at low irradiation doses, followed by transformation to extended dislocation lines and tangles at high doses. For the first time, a dislocation-denuded zone was observed near a grain boundary in the 1-MeV Kr-irradiated UO2 sample at 800C. The denuded zone in the vicinity of grain boundary was not found when the irradiation temperature was at 600C. The suppression of dislocation loop formation near the boundary is likely due to the enhanced interstitial diffusion toward grain boundary at the high temperature.

  12. RAE 2001 -UoA 44 Accounting and Finance Overview of research in Accounting and Finance

    E-Print Network [OSTI]

    Abrahams, I. David

    RAE 2001 - UoA 44 ­ Accounting and Finance Overview of research in Accounting and Finance This note gives an overview of the state of research in the field of Accounting and Finance in UK universities in the area of Accounting and Finance was submitted to the Business and Management panel (UoA 43) as part

  13. Molecular dynamics simulations of grain boundary thermal resistance in UO2

    SciTech Connect (OSTI)

    Tianyi Chen; Di Chen; Bulent H. Sencer; Lin Shao

    2014-09-01

    By means of molecular dynamics (MD) simulations, we have calculated Kaptiza resistance of UO2 with or without radiation damage. For coincident site lattice boundaries of different configurations, the boundary thermal resistance of unirradiated UO2 can be well described by a parameter-reduced formula by using boundary energies as variables. We extended the study to defect-loaded UO2 by introducing damage cascades in close vicinity to the boundaries. Following cascade annealing and defect migrations towards grain boundaries, the boundary energy increases and so does Kaptiza resistance. The correlations between these two still follow the same formula extracted from the unirradiated UO2. The finding will benefit multi-scale modeling of UO2 thermal properties under extreme radiation conditions by combining effects from boundary configurations and damage levels.

  14. Chemical reactivity of CVC and CVD SiC with UO2 at high temperatures

    SciTech Connect (OSTI)

    Silva, Chinthaka M; Katoh, Yutai; Voit, Stewart L; Snead, Lance Lewis

    2015-01-01

    Two types of silicon carbide (SiC) synthesized using two different vapor deposition processes were embedded in UO2 pellets and evaluated for their potential chemical reaction with UO2. While minor reactivity between chemical-vapor-composited (CVC) SiC and UO2 was observed at comparatively low temperatures of 1100 and 1300 C, chemical-vapor-deposited (CVD) SiC did not show any such reactivity, according to microstructural investigations. However, both CVD and CVC SiCs showed some reaction with UO2 at a higher temperature (1500 C). Elemental maps supported by phase maps obtained using electron backscatter diffraction indicated that CVC SiC was more reactive than CVD SiC at 1500 C. Furthermore, this investigation indicated the formation of uranium carbides and uranium silicide chemical phases such as UC, USi2, and U3Si2 as a result of SiC reaction with UO2.

  15. PUREX/UO{sub 3} facilities deactivation lessons learned history

    SciTech Connect (OSTI)

    Hamrick, D.G.; Gerber, M.S.

    1995-01-01

    The Plutonium-Uranium Extraction (PUREX) Facility operated from 1956-1972, from 1983-1988, and briefly during 1989-1990 to produce for national defense at the Hanford Site in Washington State. The Uranium Trioxide (UO{sub 3}) Facility operated at the Hanford Site from 1952-1972, 1984-1988, and briefly in 1993. Both plants were ordered to permanent shutdown by the U.S. Department of Energy (DOE) in December 1992, thus initiating their deactivation phase. Deactivation is that portion of a facility`s life cycle that occurs between operations and final decontamination and decommissioning (D&D). This document details the history of events, and the lessons learned, from the time of the PUREX Stabilization Campaign in 1989-1990, through the end of the first full fiscal year (FY) of the deactivation project (September 30, 1994).

  16. Etching of UO{sub 2} in NF{sub 3} RF Plasma Glow Discharge

    SciTech Connect (OSTI)

    John M. Veilleux

    1999-08-01

    A series of room temperature, low pressure (10.8 to 40 Pa), low power (25 to 210 W) RF plasma glow discharge experiments with UO{sub 2} were conducted to demonstrate that plasma treatment is a viable method for decontaminating UO{sub 2} from stainless steel substrates. Experiments were conducted using NF{sub 3} gas to decontaminate depleted uranium dioxide from stainless-steel substrates. Depleted UO{sub 2} samples each containing 129.4 Bq were prepared from 100 microliter solutions of uranyl nitrate hexahydrate solution. The amorphous UO{sub 2} in the samples had a relatively low density of 4.8 gm/cm{sub 3}. Counting of the depleted UO{sub 2} on the substrate following plasma immersion was performed using liquid scintillation counting with alpha/beta discrimination due to the presence of confounding beta emitting daughter products, {sup 234}Th and {sup 234}Pa. The alpha emission peak from each sample was integrated using a gaussian and first order polynomial fit to improve quantification. The uncertainties in the experimental measurement of the etched material were estimated at about {+-} 2%. Results demonstrated that UO{sub 2} can be completely removed from stainless-steel substrates after several minutes processing at under 200 W. At 180 W and 32.7 Pa gas pressure, over 99% of all UO{sub 2} in the samples was removed in just 17 minutes. The initial etch rate in the experiments ranged from 0.2 to 7.4 {micro}m/min. Etching increased with the plasma absorbed power and feed gas pressure in the range of 10.8 to 40 Pa. A different pressure effect on UO{sub 2} etching was also noted below 50 W in which etching increased up to a maximum pressure, {approximately}23 Pa, then decreased with further increases in pressure.

  17. PUREX/UO3 Facilities deactivation lessons learned history

    SciTech Connect (OSTI)

    Gerber, M.S.

    1996-09-19

    Disconnecting the criticality alarm permanently in June 1996 signified that the hazards in the PUREX (plutonium-uranium extraction) plant had been so removed and reduced that criticality was no longer a credible event. Turning off the PUREX criticality alarm also marked a salient point in a historic deactivation project, 1 year before its anticipated conclusion. The PUREX/UO3 Deactivation Project began in October 1993 as a 5-year, $222.5- million project. As a result of innovations implemented during 1994 and 1995, the project schedule was shortened by over a year, with concomitant savings. In 1994, the innovations included arranging to send contaminated nitric acid from the PUREX Plant to British Nuclear Fuels, Limited (BNFL) for reuse and sending metal solutions containing plutonium and uranium from PUREX to the Hanford Site tank farms. These two steps saved the project $36.9- million. In 1995, reductions in overhead rate, work scope, and budget, along with curtailed capital equipment expenditures, reduced the cost another $25.6 million. These savings were achieved by using activity-based cost estimating and applying technical schedule enhancements. In 1996, a series of changes brought about under the general concept of ``reengineering`` reduced the cost approximately another $15 million, and moved the completion date to May 1997. With the total savings projected at about $75 million, or 33.7 percent of the originally projected cost, understanding how the changes came about, what decisions were made, and why they were made becomes important. At the same time sweeping changes in the cultural of the Hanford Site were taking place. These changes included shifting employee relations and work structures, introducing new philosophies and methods in maintaining safety and complying with regulations, using electronic technology to manage information, and, adopting new methods and bases for evaluating progress. Because these changes helped generate cost savings and were accompanied by and were an integral part of sweeping ``culture changes,`` the story of the lessons learned during the PUREX Deactivation Project are worth recounting. Foremost among the lessons is recognizing the benefits of ``right to left`` project planning. A deactivation project must start by identifying its end points, then make every task, budget, and organizational decision based on reaching those end points. Along with this key lesson is the knowledge that project planning and scheduling should be tied directly to costing, and the project status should be checked often (more often than needed to meet mandated reporting requirements) to reflect real-time work. People working on a successful project should never be guessing about its schedule or living with a paper schedule that does not represent the actual state of work. Other salient lessons were learned in the PUREX/UO3 Deactivation Project that support these guiding principles. They include recognizing the value of independent review, teamwork, and reengineering concepts; the need and value of cooperation between the DOE, its contractors, regulators, and stakeholders; and the essential nature of early and ongoing communication. Managing a successful project also requires being willing to take a fresh look at safety requirements and to apply them in a streamlined and sensible manner to deactivating facilities; draw on the enormous value of resident knowledge acquired by people over years and sometimes decades of working in old plants; and recognize the value of bringing in outside expertise for certain specialized tasks.This approach makes possible discovering the savings that can come when many creative options are pursued persistently and the wisdom of leaving some decisions to the future. The essential job of a deactivation project is to place a facility in a safe, stable, low-maintenance mode, for an interim period. Specific end points are identified to recognize and document this state. Keeping the limited objectives of the project in mind can guide decisions that reduce risks with minimal manipul

  18. Near surface stoichiometry in UO2: A density functional theory study

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Yu, Jianguo; Valderrama, Billy; Henderson, Hunter B.; Manuel, Michele V.; Allen, Todd

    2015-08-01

    The mechanisms of oxygen stoichiometry variation in UO2 at different temperature and oxygen partial pressure are important for understanding the dynamics of microstructure in these crystals. However, very limited experimental studies have been performed to understand the atomic structure of UO2 near surface and defect effects of near surface on stoichiometry in which the system can exchange atoms with the external reservoir. In this study, the near (110) surface relaxation and stoichiometry in UO2 have been studied with density functional theory (DFT) calculations. On the basis of the point-defect model (PDM), a general expression for the near surface stoichiometric variationmore »is derived by using DFT total-energy calculations and atomistic thermodynamics, in an attempt to pin down the mechanisms of oxygen exchange between the gas environment and defected UO2. By using the derived expression, it is observed that, under poor oxygen conditions, the stoichiometry of near surface is switched from hyperstoichiometric at 300 K with a depth around 3 nm to near-stoichiometric at 1000 K and hypostoichiometric at 2000 K. Furthermore, at very poor oxygen concentrations and high temperatures, our results also suggest that the bulk of the UO2 prefers to be hypostoichiometric, although the surface is near-stoichiometric.« less

  19. Near Surface Stoichiometry in UO 2 : A Density Functional Theory Study

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Yu, Jianguo; Valderrama, Billy; Henderson, Hunter B.; Manuel, Michele V.; Allen, Todd

    2015-01-01

    The mechanisms of oxygen stoichiometry variation in UO2at different temperature and oxygen partial pressure are important for understanding the dynamics of microstructure in these crystals. However, very limited experimental studies have been performed to understand the atomic structure of UO2near surface and defect effects of near surface on stoichiometry in which the system can exchange atoms with the external reservoir. In this study, the near (110) surface relaxation and stoichiometry in UO2have been studied with density functional theory (DFT) calculations. On the basis of the point-defect model (PDM), a general expression for the near surface stoichiometric variation is derived bymore »using DFT total-energy calculations and atomistic thermodynamics, in an attempt to pin down the mechanisms of oxygen exchange between the gas environment and defected UO2. By using the derived expression, it is observed that, under poor oxygen conditions, the stoichiometry of near surface is switched from hyperstoichiometric at 300?K with a depth around 3?nm to near-stoichiometric at 1000?K and hypostoichiometric at 2000?K. Furthermore, at very poor oxygen concentrations and high temperatures, our results also suggest that the bulk of the UO2prefers to be hypostoichiometric, although the surface is near-stoichiometric.« less

  20. Fission gas release from UO{sub 2+x} in defective light water reactor fuel rods

    SciTech Connect (OSTI)

    Skim, Y. S.

    1999-11-12

    A simplified semi-empirical model predicting fission gas release form UO{sub 2+x} fuel to the fuel rod plenum as a function of stoichiometry excess (x) is developed to apply to the fuel of a defective LWR fuel rod in operation. The effect of fuel oxidation in enhancing gas diffusion is included as a parabolic dependence of the stoichiometry excess. The increase of fission gas release in a defective BWR fuel rod is at the most 3 times higher than in an intact fuel rod because of small extent of UO{sub 2} oxidation. The major enhancement contributor in fission gas release of UO{sub 2+x} fuel is the increased diffusivity due to stoichiometry excess rather than the higher temperature caused by degraded fuel thermal conductivity.

  1. Determination of Gd concentration profile in UO2-Gd2O3 fuel pellets

    E-Print Network [OSTI]

    Tobia, D; Milano, J; Butera, A; Kempf, R; Bianchi, L; Kaufmann, F

    2014-01-01

    A transversal mapping of the Gd concentration was measured in UO2-Gd2O3 nuclear fuel pellets by electron paramagnetic resonance spectroscopy (EPR). The quantification was made from the comparison with a Gd2O3 reference sample. The nominal concentration in the pellets is UO2: 7.5 % Gd2O3. A concentration gradient was found, which indicates that the Gd2O3 amount diminishes towards the edges of the pellets. The concentration varies from (9.3 +/- 0.5)% in the center to (5.8 +/- 0.3)% in one of the edges. The method was found to be particularly suitable for the precise mapping of the distribution of Gd3+ ions in the UO2 matrix.

  2. Determination of Gd concentration profile in UO2-Gd2O3 fuel pellets

    E-Print Network [OSTI]

    D. Tobia; E. L. Winkler; J. Milano; A. Butera; R. Kempf; L. Bianchi; F. Kaufmann

    2014-02-28

    A transversal mapping of the Gd concentration was measured in UO2-Gd2O3 nuclear fuel pellets by electron paramagnetic resonance spectroscopy (EPR). The quantification was made from the comparison with a Gd2O3 reference sample. The nominal concentration in the pellets is UO2: 7.5 % Gd2O3. A concentration gradient was found, which indicates that the Gd2O3 amount diminishes towards the edges of the pellets. The concentration varies from (9.3 +/- 0.5)% in the center to (5.8 +/- 0.3)% in one of the edges. The method was found to be particularly suitable for the precise mapping of the distribution of Gd3+ ions in the UO2 matrix.

  3. Microstructure evolution in Xe-irradiated UO2 at room temperature

    SciTech Connect (OSTI)

    L.F. He; J. Pakarinen; M.A. Kirk; J. Gan; A.T. Nelson; X.-M. Bai; A. El-Azab; T.R. Allen

    2014-07-01

    In situ Transmission Electron Microscopy was conducted for single crystal UO2 to understand the microstructure evolution during 300 keV Xe irradiation at room temperature. The dislocation microstructure evolution was shown to occur as nucleation and growth of dislocation loops at low irradiation doses, followed by transformation to extended dislocation segments and tangles at higher doses. Xe bubbles with dimensions of 1-2 nm were observed after room-temperature irradiation. Electron Energy Loss Spectroscopy indicated that UO2 remained stoichiometric under room temperature Xe irradiation.

  4. EMPLOYEE ACCIDENT / INCIDENT / QUALITY IMPROVEMENT REPORT UoW 1018 (Rev. 3/05)

    E-Print Network [OSTI]

    Matrajt, Graciela

    provided to affected party (originator). University Risk Management Box 351276 UWB Administrative Services the Labor and Industries (L&I) "Report of Industrial Injury or Occupational Disease." Your doctor should mail this form to the University Risk Management Office. UoW 1018 Accident/Incident Form L&I Injury

  5. Simulations of Thermal and Oxygen Transport in UO2 Fuels Marius Stan1

    E-Print Network [OSTI]

    Mihaila, Bogdan

    Simulations of Thermal and Oxygen Transport in UO2 Fuels Marius Stan1 and Bogdan Mihaila2 1 Argonne properties of nuclear fuels and predicting the behavior of nuclear fuel elements (ceramic fuel pellets or metallic fuel rods) under normal and accident conditions are major challenges for the nuclear fuel

  6. UoN2013/8694BICRICOSProvider00109J Advertising with the University of

    E-Print Network [OSTI]

    Fleming, Andrew J.

    w UoN2013/8694BICRICOSProvider00109J CONTACT Advertising with the University of Newcastle's Careers's always the right time to advertise a part-time/ casual vacancy. Students love it when employers come on on CareerHub OUR STUdENTS YOUR TAlENT It's fast, easy and cost effective. Advertising opportunities with us

  7. RAE 2001 -UoA66 Drama, Dance and Performing Arts -Overview Report 1. Research assessed

    E-Print Network [OSTI]

    Abrahams, I. David

    rise in quality. The submissions overall demonstrated an impressive diversity of types of research1 RAE 2001 - UoA66 Drama, Dance and Performing Arts - Overview Report 1. Research assessed colleges offering degree courses. The largest department submitted over forty researchers, the smallest sub

  8. In-situ TEM observation of dislocation evolution in Kr-irradiated UO2 single crystal

    SciTech Connect (OSTI)

    Lingfeng He; Mahima Gupta; Clarissa A. Yablinsky; Jian Gan; Marquis A. Kirk; Xian-Ming Bai; Janne Pakarinen; Todd R. Allen

    2013-11-01

    In-situ transmission electron microscopy (TEM) observation of UO2 single crystal irradiated with Kr ions at high temperatures was conducted to understand the dislocation evolution due to high-energy radiation. The dislocation evolution in UO2 single crystal is shown to occur as nucleation and growth of dislocation loops at low-irradiation doses, followed by transformation to extended dislocation segments and networks at high doses, as well as shrinkage and annihilation of some loops and dislocations due to high temperature annealing. Generally the trends of dislocation evolution in UO2 are similar under Kr irradiation at different ion energies and temperatures (150 keV at 600 degrees C and 1 MeV at 800 degrees C) used in this work, although the specific dislocation loop size and density are quite different. Interstitial-type dislocation loops with Burgers vector along <110> were observed in the Kr-irradiated UO2.The irradiated specimens were denuded of dislocation loops near the surface.

  9. 12/21/2011 KWarden UO Policy Library Policy Revision and Update Guidelines

    E-Print Network [OSTI]

    Oregon, University of

    12/21/2011 ­ KWarden UO Policy Library Policy Revision and Update Guidelines Any Responsible Office, Policy Statement: Development and Management. The policy refers to two types of revisions: substantive: Development and Management, which is found in the Policy Library. Minor Revision or Update A minor revision

  10. PRIOR RISK ASSESSMENT 005 Bradley / adapted by UoE URPO

    E-Print Network [OSTI]

    Bearhop, Stuart

    PRIOR RISK ASSESSMENT 005 Version 002 Author Bradley / adapted by UoE URPO Date of version 1 issue the University to undertake a prior risk assessment before commencing a new work activity involving ionising a review of existing risk assessments at appropriate intervals to ensure that they remain suitable

  11. UNIVERSITY OF OREGON SOLAR MONITORING LABORATORY The University of Oregon (UO) Solar Moni-

    E-Print Network [OSTI]

    Oregon, University of

    i UNIVERSITY OF OREGON SOLAR MONITORING LABORATORY The University of Oregon (UO) Solar Moni- toring Laboratory has been measuring incident solar radiation since 1975. Current support for this work comes from the Regional Solar Radiation Monitoring Project (RSRMP), a utility consortium project including the Bon

  12. Thermal Behavior of Advanced UO{sub 2} Fuel at High Burnup

    SciTech Connect (OSTI)

    Muller, E.; Lambert, T.; Silberstein, K.; Therache, B.

    2007-07-01

    To improve the fuel performance, advanced UO{sub 2} products are developed to reduce significantly Pellet-Cladding Interaction and Fission Gas Release to increase high burnup safety margins on Light Water Reactors. To achieve the expected improvements, doping elements are currently used, to produce large grain viscoplastic UO{sub 2} fuel microstructures. In that scope, AREVA NP is conducting the qualification of a new UO{sub 2} fuel pellet obtained by optimum chromium oxide doping. To assess the fuel thermal performance, especially the fuel conductivity degradation with increasing burnup and also the kinetics of fission gas release under transient operating conditions, an instrumented in-pile experiment, called REMORA, has been developed by the CEA. One segment base irradiated for five cycles in a French EDF commercial PWR ({approx} 62 GWd/tM) was consequently re-instrumented with a fuel centerline thermocouple and an advanced pressure sensor. The design of this specific sensor is based on the counter-pressure principle and avoids any drift phenomenon due to nuclear irradiation. This rodlet was then irradiated in the GRIFFONOS rig of the Osiris experimental reactor at CEA Saclay. This device, located in the periphery of the core, is designed to perform test under conditions close to those prevailing in French PWR reactor. Power variations are carried out by translating the device relatively to the core. Self - powered neutron detectors are positioned in the loop in order to monitor the power the whole time of the irradiation. The re-irradiation of the REMORA experiment consisted of a stepped ramp to power in order to point out a potential degradation of the fuel thermal conductivity with increasing burnup. During the first part of the irradiation, most of the measurements were performed at low power in order to take into account the irradiation effects on UO{sub 2} thermal conductivity at high burnup in low range of temperature. The second part of the irradiation consisted in power cycling with one steady-state at several powers (290 W/cm and 360 W/cm) to assess both the thermal conductivity at higher temperature (until 1600 deg. C) and the fission gas release kinetic. This paper summarizes and discusses the main results assessed for this advanced UO{sub 2} fuel: on the one hand, the thermal performances indicate that the fuel thermal conductivity is similar to the one of the standard UO{sub 2} fuel type (the thermal conductivity damage under irradiation can be modelling alike) and, on the other hand, the test results show low fission gas release in comparison with UO{sub 2} standard fuel. (authors)

  13. Theoretical investigation of the impact of grain boundaries and fission gases on UO2 thermal conductivity

    SciTech Connect (OSTI)

    Du, Shiyu; Andersson, Anders D.; Germann, Timothy C.; Stanek, Christopher R.

    2012-05-02

    Thermal conductivity is one of the most important metrics of nuclear fuel performance. Therefore, it is crucial to understand the impact of microstructure features on thermal conductivity, especially since the microstructure evolves with burn-up or time in the reactor. For example, UO{sub 2} fuels are polycrystalline and for high-burnup fuels the outer parts of the pellet experience grain sub-division leading to a very fine grain structure. This is known to impact important physical properties such as thermal conductivity as fission gas release. In a previous study, we calculated the effect of different types of {Sigma}5 grain boundaries on UO{sub 2} thermal conductivity and predicted the corresponding Kapitza resistances, i.e. the resistance of the grain boundary in relation to the bulk thermal resistance. There have been reports of pseudoanisotropic effects for the thermal conductivity in cubic polycrystalline materials, as obtained from molecular dynamics simulations, which means that the conductivity appears to be a function of the crystallographic direction of the temperature gradient. However, materials with cubic symmetry should have isotropic thermal conductivity. For this reason it is necessary to determine the cause of this apparent anisotropy and in this report we investigate this effect in context of our earlier simulations of UO{sub 2} Kapitza resistances. Another source of thermal resistance comes from fission products and fission gases. Xe is the main fission gas and when generated in sufficient quantity it dissolves from the lattice and forms gas bubbles inside the crystalline structure. We have performed studies of how Xe atoms dissolved in the UO{sub 2} matrix or precipitated as bubbles impact thermal conductivity, both in bulk UO{sub 2} and in the presence of grain boundaries.

  14. Strong electron correlation in UO{sub 2}{sup ?}: A photoelectron spectroscopy and relativistic quantum chemistry study

    SciTech Connect (OSTI)

    Li, Wei-Li; Jian, Tian; Lopez, Gary V.; Wang, Lai-Sheng, E-mail: lai-sheng-wang@brown.edu [Department of Chemistry, Brown University, Providence, Rhode Island 02912 (United States)] [Department of Chemistry, Brown University, Providence, Rhode Island 02912 (United States); Su, Jing [Department of Chemistry and Key Laboratory of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Tsinghua University, Beijing 100084 (China) [Department of Chemistry and Key Laboratory of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Tsinghua University, Beijing 100084 (China); Division of Nuclear Materials Science and Engineering, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China and Key Laboratory of Nuclear Radiation and Nuclear Energy Technology, Chinese Academy of Sciences, Shanghai 201800 (China); Hu, Han-Shi; Cao, Guo-Jin; Li, Jun, E-mail: junli@tsinghua.edu.cn [Department of Chemistry and Key Laboratory of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Tsinghua University, Beijing 100084 (China)] [Department of Chemistry and Key Laboratory of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Tsinghua University, Beijing 100084 (China)

    2014-03-07

    The electronic structures of actinide systems are extremely complicated and pose considerable challenges both experimentally and theoretically because of significant electron correlation and relativistic effects. Here we report an investigation of the electronic structure and chemical bonding of uranium dioxides, UO{sub 2}{sup ?} and UO{sub 2}, using photoelectron spectroscopy and relativistic quantum chemistry. The electron affinity of UO{sub 2} is measured to be 1.159(20) eV. Intense detachment bands are observed from the UO{sub 2}{sup ?} low-lying (7s?{sub g}){sup 2}(5f?{sub u}){sup 1} orbitals and the more deeply bound O2p-based molecular orbitals which are separated by a large energy gap from the U-based orbitals. Surprisingly, numerous weak photodetachment transitions are observed in the gap region due to extensive two-electron transitions, suggesting strong electron correlations among the (7s?{sub g}){sup 2}(5f?{sub u}){sup 1} electrons in UO{sub 2}{sup ?} and the (7s?{sub g}){sup 1}(5f?{sub u}){sup 1} electrons in UO{sub 2}. These observations are interpreted using multi-reference ab initio calculations with inclusion of spin-orbit coupling. The strong electron correlations and spin-orbit couplings generate orders-of-magnitude more detachment transitions from UO{sub 2}{sup ?} than expected on the basis of the Koopmans’ theorem. The current experimental data on UO{sub 2}{sup ?} provide a long-sought opportunity to arbitrating various relativistic quantum chemistry methods aimed at handling systems with strong electron correlations.

  15. Bubble formation and Kr distribution in Kr-irradiated UO2

    SciTech Connect (OSTI)

    He, L. F. [Univ. of Wisconsin, Madison, WI (United States) Dept. of Engineering Physics; Valderrama, B. [Univ. of Florida, Gainesville, FL (United States) Dept. of Materials Science and Engineering; Hassan, A. -R. [Purdue Univ., West Lafayette, IN (United States) School of Nuclear Engineering; Yu, J. [Idaho National Lab. (INL), Idaho Falls, ID (United States); Gupta, M. [Univ. of Wisconsin, Madison, WI (United States) Dept. of Engineering Physics; Pakarinen, J. [Univ. of Wisconsin, Madison, WI (United States) Dept. of Engineering Physics; Henderson, H. B. [Univ. of Florida, Gainesville, FL (United States) Dept. of Materials Science and Engineering; Gan, J. [Idaho National Lab. (INL), Idaho Falls, ID (United States); Kirk, M. A. [Argonne National Lab. (ANL), Argonne, IL (United States); Nelson, A. T. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Manuel, M. V. [Univ. of Florida, Gainesville, FL (United States) Dept. of Materials Science and Engineering; El-Azab, A. [Purdue Univ., West Lafayette, IN (United States) School of Nuclear Engineering; Allen, T. R. [Univ. of Wisconsin, Madison, WI (United States) Dept. of Engineering Physics; Idaho National Lab. (INL), Idaho Falls, ID (United States)

    2015-01-01

    In situ and ex situ transmission electron microscopy observation of small Kr bubbles in both single-crystal and polycrystalline UO2 were conducted to understand the inert gas bubble behavior in oxide nuclear fuel. The bubble size and volume swelling are shown as a weak function of ion dose but strongly depend on the temperature. The Kr bubble formation at room temperature was observed for the first time. The depth profiles of implanted Kr determined by atom probe tomography are in good agreement with the calculated profiles by SRIM, but the measured concentration of Kr is about 1/3 of calculated one. This difference is mainly due to low solubility of Kr in UO2 matrix, which has been confirmed by both density-functional theory calculations and chemical equilibrium analysis.

  16. Recovery of UO[sub 2]/PuO[sub 2] in IFR electrorefining process

    DOE Patents [OSTI]

    Tomczuk, Z.; Miller, W.E.

    1994-10-18

    A process is described for converting PuO[sub 2] and UO[sub 2] present in an electrorefiner to the chlorides, by contacting the PuO[sub 2] and UO[sub 2] with Li metal in the presence of an alkali metal chloride salt substantially free of rare earth and actinide chlorides for a time and at a temperature sufficient to convert the UO[sub 2] and PuO[sub 2] to metals while converting Li metal to Li[sub 2]O. Li[sub 2]O is removed either by reducing with rare earth metals or by providing an oxygen electrode for transporting O[sub 2] out of the electrorefiner and a cathode, and thereafter applying an emf to the electrorefiner electrodes sufficient to cause the Li[sub 2]O to disassociate to O[sub 2] and Li metal but insufficient to decompose the alkali metal chloride salt. The U and Pu and excess lithium are then converted to chlorides by reaction with CdCl[sub 2].

  17. Recovery of UO.sub.2 /Pu O.sub.2 in IFR electrorefining process

    DOE Patents [OSTI]

    Tomczuk, Zygmunt (Lockport, IL); Miller, William E. (Naperville, IL)

    1994-01-01

    A process for converting PuO.sub.2 and UO.sub.2 present in an electrorefiner to the chlorides, by contacting the PuO.sub.2 and UO.sub.2 with Li metal in the presence of an alkali metal chloride salt substantially free of rare earth and actinide chlorides for a time and at a temperature sufficient to convert the UO.sub.2 and PuO.sub.2 to metals while converting Li metal to Li.sub.2 O. Li.sub.2 O is removed either by reducing with rare earth metals or by providing an oxygen electrode for transporting O.sub.2 out of the electrorefiner and a cathode, and thereafter applying an emf to the electrorefiner electrodes sufficient to cause the Li.sub.2 O to disassociate to O.sub.2 and Li metal but insufficient to decompose the alkali metal chloride salt. The U and Pu and excess lithium are then converted to chlorides by reaction with CdCl.sub.2.

  18. Feasibility of Partial ZrO[subscript 2] Coatings on Outer Surface of Annular UO[subscript 2] Pellets to Control Gap Conductance

    E-Print Network [OSTI]

    Feinroth, H.

    The viability of depositing a thin porous coating of zirconia on the outer surface of an annular UO[subscript 2] pellet

  19. First-principles study of noble gas impurities and defects in UO{sub 2}

    SciTech Connect (OSTI)

    Thompson, Alexander E.; Wolverton, C.

    2011-10-01

    We performed a series of density functional theory + U (DFT + U) calculations to explore the energetics of various defects in UO{sub 2}, i.e., noble gases (He, Ne, Ar, Kr, Xe), Schottky defects, and the interaction between these defects. We found the following: (1) collinear antiferromagnetic UO{sub 2} has an energy-lowering distortion of the oxygen sublattice from ideal fluorite positions; (2) DFT + U qualitatively affects the formation volume of Schottky defect clusters in UO{sub 2} (without U the formation volume is negative, but including U the formation volume is positive); (3) the configuration of the Schottky defect cluster is dictated by a competition between electrostatic and surface energy effects; (4) the incorporation energy of inserting noble gas atoms into an interstitial site has a strong dependence on the volume of the noble gas atom, corresponding to the strain it causes in the interstitial site, from He (0.98 eV) to Xe (9.73 eV); (5) the energetics of each of the noble gas atoms incorporated in Schottky defects show strong favorable binding, due to strain relief associated with moving the noble gas atom from the highly strained interstitial position into the vacant space of the Schottky defect; and (6) for argon, krypton, and xenon, the binding energy of a noble gas impurity with the Schottky defect is larger than the formation energy of a Schottky defect, thereby making the formation of Schottky defects thermodynamically favorable in the presence of these large impurities.

  20. Solar and Photovoltaic Data from the University of Oregon Solar Radiation Monitoring Laboratory (UO SRML)

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

    The UO SRML is a regional solar radiation data center whose goal is to provide sound solar resource data for planning, design, deployment, and operation of solar electric facilities in the Pacific Northwest. The laboratory has been in operation since 1975. Solar data includes solar resource maps, cumulative summary data, daily totals, monthly averages, single element profile data, parsed TMY2 data, and select multifilter radiometer data. A data plotting program and other software tools are also provided. Shade analysis information and contour plots showing the effect of tilt and orientation on annual solar electric system perfomance make up a large part of the photovoltaics data.(Specialized Interface)

  1. An Overview of Current and Past W-UO[2] CERMET Fuel Fabrication Technology

    SciTech Connect (OSTI)

    Douglas E. Burkes; Daniel M. Wachs; James E. Werner; Steven D. Howe

    2007-06-01

    Studies dating back to the late 1940s performed by a number of different organizations and laboratories have established the major advantages of Nuclear Thermal Propulsion (NTP) systems, particularly for manned missions. A number of NTP projects have been initiated since this time; none have had any sustained fuel development work that appreciably contributed to fuel fabrication or performance data from this era. As interest in these missions returns and previous space nuclear power researchers begin to retire, fuel fabrication technologies must be revisited, so that established technologies can be transferred to young researchers seamlessly and updated, more advanced processes can be employed to develop successful NTP fuels. CERMET fuels, specifically W-UO2, are of particular interest to the next generation NTP plans since these fuels have shown significant advantages over other fuel types, such as relatively high burnup, no significant failures under severe transient conditions, capability of accommodating a large fission product inventory during irradiation and compatibility with flowing hot hydrogen. Examples of previous fabrication routes involved with CERMET fuels include hot isostatic pressing (HIPing) and press and sinter, whereas newer technologies, such as spark plasma sintering, combustion synthesis and microsphere fabrication might be well suited to produce high quality, effective fuel elements. These advanced technologies may address common issues with CERMET fuels, such as grain growth, ductile to brittle transition temperature and UO2 stoichiometry, more effectively than the commonly accepted ‘traditional’ fabrication routes. Bonding of fuel elements, especially if the fabrication process demands production of smaller element segments, must be investigated. Advanced brazing techniques and compounds are now available that could produce a higher quality bond segment with increased ease in joining. This paper will briefly address the history of CERMET fuel fabrication technology as related to the GE 710 and ANL Nuclear Rocket Programs, in addition to discussing future plans, viable alternatives and preliminary investigations for W-UO2 CERMET fuel fabrication. The intention of the talk is to provide the brief history and tie in an overview of current programs and investigations as related to NTP based W-UO2 CERMET fuel fabrication, and hopefully peak interest in advanced fuel fabrication technologies.

  2. Multiscale simulation of xenon diffusion and grain boundary segregation in UO?

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Andersson, David A.; Tonks, Michael R.; Casillas, Luis; Vyas, Shyam; Nerikar, Pankaj; Uberuaga, Blas P.; Stanek, Christopher R.

    2015-07-01

    In light water reactor fuel, gaseous fission products segregate to grain boundaries, resulting in the nucleation and growth of large intergranular fission gas bubbles. The segregation rate is controlled by diffusion of fission gas atoms through the grains and interaction with the boundaries. Based on the mechanisms established from earlier density functional theory (DFT) and empirical potential calculations, diffusion models for xenon (Xe), uranium (U) vacancies and U interstitials in UO? have been derived for both intrinsic (no irradiation) and irradiation conditions. Segregation of Xe to grain boundaries is described by combining the bulk diffusion model with a model formore »the interaction between Xe atoms and three different grain boundaries in UO? (?5 tilt, ?5 twist and a high angle random boundary), as derived from atomistic calculations. The present model does not attempt to capture nucleation or growth of fission gas bubbles at the grain boundaries. The point defect and Xe diffusion and segregation models are implemented in the MARMOT phase field code, which is used to calculate effective Xe and U diffusivities as well as to simulate Xe redistribution for a few simple microstructures.« less

  3. Synchrotron characterization of nanograined UO2 grain growth

    SciTech Connect (OSTI)

    Mo, Kun; Miao, Yinbin; Yun, Di; Jamison, Laura M.; Lian, Jie; Yao, Tiankei

    2015-09-30

    This activity is supported by the US Nuclear Energy Advanced Modeling and Simulation (NEAMS) Fuels Product Line (FPL) and aims at providing experimental data for the validation of the mesoscale simulation code MARMOT. MARMOT is a mesoscale multiphysics code that predicts the coevolution of microstructure and properties within reactor fuel during its lifetime in the reactor. It is an important component of the Moose-Bison-Marmot (MBM) code suite that has been developed by Idaho National Laboratory (INL) to enable next generation fuel performance modeling capability as part of the NEAMS Program FPL. In order to ensure the accuracy of the microstructure based materials models being developed within the MARMOT code, extensive validation efforts must be carried out. In this report, we summarize our preliminary synchrotron radiation experiments at APS to determine the grain size of nanograin UO2. The methodology and experimental setup developed in this experiment can directly apply to the proposed in-situ grain growth measurements. The investigation of the grain growth kinetics was conducted based on isothermal annealing and grain growth characterization as functions of duration and temperature. The kinetic parameters such as activation energy for grain growth for UO2 with different stoichiometry are obtained and compared with molecular dynamics (MD) simulations.

  4. Supplying materials needed for grain growth characterizations of nano-grained UO2

    SciTech Connect (OSTI)

    Mo, Kun; Miao, Yinbin; Yun, Di; Jamison, Laura M.; Lian, Jie; Yao, Tiankei

    2015-09-30

    This activity is supported by the US Nuclear Energy Advanced Modeling and Simulation (NEAMS) Fuels Product Line (FPL) and aims at providing experimental data for the validation of the mesoscale simulation code MARMOT. MARMOT is a mesoscale multiphysics code that predicts the coevolution of microstructure and properties within reactor fuel during its lifetime in the reactor. It is an important component of the Moose-Bison-Marmot (MBM) code suite that has been developed by Idaho National Laboratory (INL) to enable next generation fuel performance modeling capability as part of the NEAMS Program FPL. In order to ensure the accuracy of the microstructure based materials models being developed within the MARMOT code, extensive validation efforts must be carried out. In this report, we summarize our preliminary synchrotron radiation experiments at APS to determine the grain size of nanograin UO2. The methodology and experimental setup developed in this experiment can directly apply to the proposed in-situ grain growth measurements. The investigation of the grain growth kinetics was conducted based on isothermal annealing and grain growth characterization as functions of duration and temperature. The kinetic parameters such as activation energy for grain growth for UO2 with different stoichiometry are obtained and compared with molecular dynamics (MD) simulations.

  5. NEAMS FPL M2 Milestone Report: Development of a UO? Grain Size Model using Multicale Modeling and Simulation

    SciTech Connect (OSTI)

    Michael R Tonks; Yongfeng Zhang; Xianming Bai

    2014-06-01

    This report summarizes development work funded by the Nuclear Energy Advanced Modeling Simulation program's Fuels Product Line (FPL) to develop a mechanistic model for the average grain size in UO? fuel. The model is developed using a multiscale modeling and simulation approach involving atomistic simulations, as well as mesoscale simulations using INL's MARMOT code.

  6. THE ELECTRON AFFINITY OF UO E.B. Rudnyi, E.A. Kaibicheva, L.N. Sidorov

    E-Print Network [OSTI]

    Rudnyi, Evgenii B.

    THE ELECTRON AFFINITY OF UO 3 * E.B. Rudnyi, E.A. Kaibicheva, L.N. Sidorov Department of Chemistry keywords - negative ions, uranium oxide, electron affinity, ion - molecule equilibria, high temperature stronger than fluorides. The uranium oxide lies aside from other molecules in -1 table 1. High electron

  7. Role of uranium(VI) in the ThO/sub 2/-UO/sub 3/ sol-gel process

    SciTech Connect (OSTI)

    Tewari, P.H.; Campbell, A.B.

    1980-11-01

    Increases in pH and temperature of U(VI) solutions enhance adsorption of uranium on ThO/sub 2/ through hydrolysis of U(VI) as evidenced by absorption spectra changes of the solution. Sols of ThO/sub 2/-UO/sub 3/ are formed by adsorption of uranium on ThO/sub 2/. At low pH's (approx. pH 3.0), the sols behave as Newtonian fluids but at higher pH's the sols (especially the concentrated ones) transform into thixotropic gels. The increased adsorption of uranium by ThO/sub 2/ and the increased viscosity of the ThO/sub 2/-UO/sub 3/ sols with pH are related. Increased adsorption of uranium produces rod-shaped UO/sub 3/.2H/sub 2/O on the ThO/sub 2/ surface. These UO/sub 3/ nuclei link ThO/sub 2/ particles to form long rodlike particles. With further increased adsorption of uranium at higher pH's (less than or equal to 3.7), the particles crosslink to produce a structured network giving a thixotropic gel. Adsorption, electron microscopic, electrophoetic mobility, X-ray diffraction, and X-ray photoelectron spectroscopic data are presented to explain the role of U(VI) in the sol-gel process. 6 figures, 1 table.

  8. Irradiation behaviour of the large grained UO{sub 2} fuel pellet in the transient conditions

    SciTech Connect (OSTI)

    Kosaka, Yuji; Watanabe, Seiichi; Arakawa, Yasushi

    2007-07-01

    In order to achieve a high duty fuel rod design, it is the key issue to suppress the fission gas release from the view point of the fuel rod inner pressure design. The large grain UO{sub 2} pellet is one of the candidates to meet such a requirement by reducing the fission gas release especially at high power and/or high burnup. We have demonstrated the fuel performance of the large grain pellet in the PWR irradiation conditions, which was fabricated with no additive but with active UO{sub 2} powder through the conventional pelletizing process for the normal grain size pellet. According to the mechanism of the fission gas retention, there may be a concern about the larger gas bubble swelling of the large grain pellet at the power transient conditions which may increase the potential of the PCMI failure. In this paper, we focus on the differences of the dimensional change in comparison among the pellets with the different grain sizes at the power transient conditions. The power ramp tests were carried out on the high burnup fuel rods of normal and large grain pellet with no additive, which had been irradiated in the PWR conditions up to around 60 GWd/t at peak position. The detailed PIE results revealed that the volume increment due to the power ramp clearly showed the dependence on the grain size as well as the fission gas release and suggested that the larger grain with no additive may suppress the gas bubble swelling at the power transient conditions. According to the experimental results, it is concluded that the large grain pellet with no additive does not deteriorate the irradiation performance during the power transient conditions from the view point of the gas bubble swelling. (authors)

  9. Simulation of xenon, uranium vacancy and interstitial diffusion and grain boundary segregation in UO2

    SciTech Connect (OSTI)

    Andersson, Anders D.; Tonks, Michael R.; Casillas, Luis; Nerikar, Pankaj; Vyas, Shyam; Uberuaga, Blas P.; Stanek, Christopher R.

    2014-10-31

    In light water reactor fuel, gaseous fission products segregate to grain boundaries, resulting in the nucleation and growth of large intergranular fission gas bubbles. Based on the mechanisms established from density functional theory (DFT) and empirical potential calculations 1, continuum models for diffusion of xenon (Xe), uranium (U) vacancies and U interstitials in UO2 have been derived for both intrinsic conditions and under irradiation. Segregation of Xe to grain boundaries is described by combining the bulk diffusion model with a model for the interaction between Xe atoms and three different grain boundaries in UO2 ( ?5 tilt, ?5 twist and a high angle random boundary),as derived from atomistic calculations. All models are implemented in the MARMOT phase field code, which is used to calculate effective Xe and U diffusivities as well as redistribution for a few simple microstructures.

  10. A Study of UO2 Grain Boundary Structure and Thermal Resistance Change under Irradiation using Molecular Dynamics Simulations 

    E-Print Network [OSTI]

    Chen, Tianyi

    2013-08-02

    OF UO2 GRAIN BOUNDARY STUCTURE AND THERMAL RESISTANCE CHANGE UNDER IRRADIATION USING MOLECULAR DYNAMICS SIMULATIONS A Thesis by TIANYI CHEN Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment...] As the fuel expands to reach the cladding, the fuel cladding interaction begins to draw attention. The first thing is the fuel/cladding mechanical interaction. This phenomenon is very serious in early designed reactors since they do not have enough spaces...

  11. Local structure in solid solutions of stabilised zirconia with actinide dioxides (UO{sub 2}, NpO{sub 2})

    SciTech Connect (OSTI)

    Walter, Marcus; Somers, Joseph; Bouexiere, Daniel; Rothe, Joerg

    2011-04-15

    The local structure of (Zr,Lu,U)O{sub 2-x} and (Zr,Y,Np)O{sub 2-x} solid solutions has been investigated by extended X-ray absorption fine structure (EXAFS). Samples were prepared by mixing reactive (Zr,Lu)O{sub 2-x} and (Zr,Y)O{sub 2-x} precursor materials with the actinide oxide powders, respectively. Sintering at 1600 {sup o}C in Ar/H{sub 2} yields a fluorite structure with U(IV) and Np(IV). As typical for stabilised zirconia the metal-oxygen and metal-metal distances are characteristic for the different metal ions. The bond lengths increase with actinide concentration, whereas highest adaptation to the bulk stabilised zirconia structure was observed for U---O and Np---O bonds. The Zr---O bond shows only a slight increase from 2.14 A at 6 mol% actinide to 2.18 A at infinite dilution in UO{sub 2} and NpO{sub 2}. The short interatomic distance between Zr and the surrounding oxygen and metal atoms indicate a low relaxation of Zr with respect to the bulk structure, i.e. a strong Pauling behaviour. -- Graphical abstract: Metal-oxygen bond distances in (Zr,Lu,U)O{sub 2-x} solid solutions with different oxygen vacancy concentrations (Lu/Zr=1 and Lu/Zr=0.5). Display Omitted Research Highlights: {yields} EXAFS indicates high U and Np adaption to the bulk structure of stabilised zirconia. {yields} Zr---O bond length is 2.18 A at infinite Zr dilution in UO{sub 2} and NpO{sub 2}. {yields} Low relaxation (strong Pauling behaviour) of Zr explains its low solubility in UO{sub 2}.

  12. Development of an Innovative High-Thermal Conductivity UO2 Ceramic Composites Fuel Pellets with Carbon Nano-Tubes Using Spark Plasma Sintering

    SciTech Connect (OSTI)

    Subhash, Ghatu; Wu, Kuang-Hsi; Tulenko, James

    2014-03-10

    Uranium dioxide (UO2) is the most common fuel material in commercial nuclear power reactors. Despite its numerous advantages such as high melting point, good high-temperature stability, good chemical compatibility with cladding and coolant, and resistance to radiation, it suffers from low thermal conductivity that can result in large temperature gradients within the UO2 fuel pellet, causing it to crack and release fission gases. Thermal swelling of the pellets also limits the lifetime of UO2 fuel in the reactor. To mitigate these problems, we propose to develop novel UO2 fuel with uniformly distributed carbon nanotubes (CNTs) that can provide high-conductivity thermal pathways and can eliminate fuel cracking and fission gas release due to high temperatures. CNTs have been investigated extensively for the past decade to explore their unique physical properties and many potential applications. CNTs have high thermal conductivity (6600 W/mK for an individual single- walled CNT and >3000 W/mK for an individual multi-walled CNT) and high temperature stability up to 2800°C in vacuum and about 750°C in air. These properties make them attractive candidates in preparing nano-composites with new functional properties. The objective of the proposed research is to develop high thermal conductivity of UO2–CNT composites without affecting the neutronic property of UO2 significantly. The concept of this goal is to utilize a rapid sintering method (5–15 min) called spark plasma sintering (SPS) in which a mixture of CNTs and UO2 powder are used to make composites with different volume fractions of CNTs. Incorporation of these nanoscale materials plays a fundamentally critical role in controlling the performance and stability of UO2 fuel. We will use a novel in situ growth process to grow CNTs on UO2 particles for rapid sintering and develop UO2-CNT composites. This method is expected to provide a uniform distribution of CNTs at various volume fractions so that a high thermally conductive UO2-CNT composite is obtained with a minimal volume fraction of CNTs. The mixtures are sintered in the SPS facility at a range of temperatures, pressures, and time durations so as to identify the optimal processing conditions to obtain the desired microstructure of sintered UO2-CNT pellets. The second objective of the proposed work is to identify the optimal volume fraction of CNTs in the microstructure of the composites that provides the desired high thermal conductivity yet retaining the mechanical strength required for efficient function as a reactor fuel. We will systematically study the resulting microstructure (grain size, porosity, distribution of CNTs, etc.) obtained at various SPS processing conditions using optical microscopy, scanning electron microscopy (SEM), and transmission electron microscope (TEM). We will conduct indentation hardness measurements and uniaxial strength measurements as a function of volume fraction of CNTs to determine the mechanical strength and compare them to the properties of UO2. The fracture surfaces will be studied to determine the fracture characteristics that may relate to the observed cracking during service. Finally, we will perform thermal conductivity measurements on all the composites up to 1000° C. This study will relate the microstructure, mechanical properties, and thermal properties at various volume fractions of CNTs. The overall intent is to identify optimal processing conditions that will provide a well-consolidated compact with optimal microstructure and thermo-mechanical properties. The deliverables include: (1) fully characterized UO2-CNT composite with optimal CNT volume fraction and high thermal conductivity and (2) processing conditions for production of UO2-CNT composite pellets using SPS method.

  13. A Validation Study of Pin Heat Transfer for UO2 Fuel Based on the IFA-432 Experiments

    SciTech Connect (OSTI)

    Phillippe, Aaron M; Clarno, Kevin T; Banfield, James E; Ott, Larry J; Philip, Bobby; Berrill, Mark A; Sampath, Rahul S; Allu, Srikanth; Hamilton, Steven P

    2014-01-01

    The IFA-432 (Integrated Fuel Assessment) experiments from the International Fuel Performance Experiments (IFPE) database were designed to study the effects of gap size, fuel density, and fuel densification on fuel centerline temperature in light-water-reactor fuel. An evaluation of nuclear fuel pin heat transfer in the FRAPCON-3.4 and Exnihilo codes for uranium dioxide (UO$_2$) fuel systems was performed, with a focus on the densification stage (2.2 \\unitfrac{GWd}{MT(UO$_{2}$)}). In addition, sensitivity studies were performed to evaluate the effect of the radial power shape and approximations to the geometry to account for the thermocouple hole. The analysis demonstrated excellent agreement for rods 1, 2, 3, and 5 (varying gap thicknesses and density with traditional fuel), demonstrating the accuracy of the codes and their underlying material models for traditional fuel. For rod 6, which contained unstable fuel that densified an order of magnitude more than traditional, stable fuel, the magnitude of densification was over-predicted and the temperatures were outside of the experimental uncertainty. The radial power shape within the fuel was shown to significantly impact the predicted centerline temperatures, whereas modeling the fuel at the thermocouple location as either annular or solid was relatively negligible. This has provided an initial benchmarking of the pin heat transfer capability of Exnihilo for UO$_2$ fuel with respect to a well-validated nuclear fuel performance code.

  14. A Fission Gas Release Model for High-Burnup LWR ThO{sub 2}-UO{sub 2} Fuel

    SciTech Connect (OSTI)

    Long, Yun; Yi Yuan; Kazimi, Mujid S.; Ballinger, Ronald G.; Pilat, Edward E.

    2002-06-15

    Fission gas release in thoria-urania fuel has been investigated by creating a specially modified FRAPCON-3 code. Because of the reduced buildup of {sup 239}Pu and a flatter distribution of {sup 233}U, the new model THUPS (Thoria-Urania Power Shape) was developed to calculate the radial power distribution, including the effects of both plutonium and {sup 233}U. Additionally, a new porosity model for the rim region was introduced at high burnup. The mechanisms of fission gas release in ThO{sub 2}-UO{sub 2} fuel are expected to be essentially similar to those of UO{sub 2} fuel; therefore, the general formulations of the existing fission gas release models in FRAPCON-3 were retained. However, the gas diffusion coefficient was adjusted to a lower level to account for the smaller observed release fraction in the thoria-based fuel. To model the accelerated fission gas release at high burnup properly, a new athermal fission gas release model was introduced. The modified version of FRAPCON-3 was calibrated using the measured fission gas release data from the light water breeder reactor. Using the new model to calculate the gas release in typical pressurized water reactor hot pins gives data that indicate that the ThO{sub 2}-UO{sub 2} fuel will have considerably lower fission gas release above a burnup of 50 MWd/kg HM.

  15. Intergranular fracture in UO2: derivation of traction-separation law from atomistic simulations

    SciTech Connect (OSTI)

    Yongfeng Zhang; Paul C Millett; Michael R Tonks; Xian-Ming Bai; S Bulent Biner

    2013-10-01

    In this study, the intergranular fracture behavior of UO2 was studied by molecular dynamics simulations using the Basak potential. In addition, the constitutive traction-separation law was derived from atomistic data using the cohesive-zone model. In the simulations a bicrystal model with the (100) symmetric tilt E5 grain boundaries was utilized. Uniaxial tension along the grain boundary normal was applied to simulate Mode-I fracture. The fracture was observed to propagate along the grain boundary by micro-pore nucleation and coalescence, giving an overall intergranular fracture behavior. Phase transformations from the Fluorite to the Rutile and Scrutinyite phases were identified at the propagating crack tips. These new phases are metastable and they transformed back to the Fluorite phase at the wake of crack tips as the local stress concentration was relieved by complete cracking. Such transient behavior observed at atomistic scale was found to substantially increase the energy release rate for fracture. Insertion of Xe gas into the initial notch showed minor effect on the overall fracture behavior.

  16. Atomic Scale Modelling of the Primary Damage State of Irradiated UO{sub 2} Matrix

    SciTech Connect (OSTI)

    Van Brutzel, Laurent

    2008-07-01

    Large scale classical molecular dynamics simulations have been carried out to study the primary damage state due to a-decay self irradiation in UO{sub 2} matrix. Simulations of energetic displacement cascades up to the realistic energy of the recoil nucleus at 80 keV provide new informations on defect production, their spatial distribution and their clustering. The discrepancy with the classical linear theory NRT (Norton-Robinson-Torrens) law on the creation of the number of point defects is discussed. Study of cascade overlap sequence shows a saturation of the number of point defects created as the dose increases. Toward the end of the overlap sequence, large stable clusters of vacancies are observed. The values of athermal diffusion coefficients coming from the ballistic collisions and the additional point defects created during the cascades are estimated from these simulations to be, in all the cases, less than 10-26 m{sup 2}/s. Finally, the influence of a grain boundary of type Sigma 5 is analysed. It has been found that the energy of the cascades are dissipated along the interface and that most of the point defects are created at the grain boundary. (authors)

  17. Uranium vacancy mobility at the ?5 symmetric tilt and ?5 twist grain boundaries in UO?

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Uberuaga, Blas Pedro; Andersson, David A.

    2015-10-01

    Ionic transport at grain boundaries in oxides dictates a number of important phenomena, from ionic conductivity to sintering to creep. For nuclear fuels, it also influences fission gas bubble nucleation and growth. Here, using a combination of atomistic calculations and object kinetic Monte Carlo (okMC) simulations, we examine the kinetic pathways associated with uranium vacancies at two model grain boundaries in UO2. The barriers for vacancy motion were calculated using the nudged elastic band method at all uranium sites at each grain boundary and were used as the basis of the okMC simulations. For both boundaries considered – a simplemore »tilt and a simple twist boundary – the mobility of uranium vacancies is significantly higher than in the bulk. For the tilt boundary, there is clearly preferred migration along the tilt axis as opposed to in the perpendicular direction while, for the twist boundary, migration is essentially isotropic within the boundary plane. These results show that cation defect mobility in fluorite-structured materials is enhanced at certain types of grain boundaries and is dependent on the boundary structure with the tilt boundary exhibiting higher rates of migration than the twist boundary.« less

  18. Graphite and Beryllium Reflector Critical Assemblies of UO2 (Benchmark Experiments 2 and 3)

    SciTech Connect (OSTI)

    Margaret A. Marshall; John D. Bess

    2012-11-01

    INTRODUCTION A series of experiments was carried out in 1962-65 at the Oak Ridge National Laboratory Critical Experiments Facility (ORCEF) for use in space reactor research programs. A core containing 93.2 wt% enriched UO2 fuel rods was used in these experiments. The first part of the experimental series consisted of 252 tightly-packed fuel rods (1.27-cm triangular pitch) with graphite reflectors [1], the second part used 252 graphite-reflected fuel rods organized in a 1.506-cm triangular-pitch array [2], and the final part of the experimental series consisted of 253 beryllium-reflected fuel rods in a 1.506-cm-triangular-pitch configuration and in a 7-tube-cluster configuration [3]. Fission rate distribution and cadmium ratio measurements were taken for all three parts of the experimental series. Reactivity coefficient measurements were taken for various materials placed in the beryllium reflected core. All three experiments in the series have been evaluated for inclusion in the International Reactor Physics Experiment Evaluation Project (IRPhEP) [4] and the International Criticality Safety Benchmark Evaluation Project (ICSBEP) Handbooks, [5]. The evaluation of the first experiment in the series was discussed at the 2011 ANS Winter meeting [6]. The evaluations of the second and third experiments are discussed below. These experiments are of interest as benchmarks because they support the validation of compact reactor designs with similar characteristics to the design parameters for a space nuclear fission surface power systems [7].

  19. Enhanced Generic Phase-field Model of Irradiation Materials: Fission Gas Bubble Growth Kinetics in Polycrystalline UO2

    SciTech Connect (OSTI)

    Li, Yulan; Hu, Shenyang Y.; Montgomery, Robert O.; Gao, Fei; Sun, Xin

    2012-05-30

    Experiments show that inter-granular and intra-granular gas bubbles have different growth kinetics which results in heterogeneous gas bubble microstructures in irradiated nuclear fuels. A science-based model predicting the heterogeneous microstructure evolution kinetics is desired, which enables one to study the effect of thermodynamic and kinetic properties of the system on gas bubble microstructure evolution kinetics and morphology, improve the understanding of the formation mechanisms of heterogeneous gas bubble microstructure, and provide the microstructure to macroscale approaches to study their impact on thermo-mechanical properties such as thermo-conductivity, gas release, volume swelling, and cracking. In our previous report 'Mesoscale Benchmark Demonstration, Problem 1: Mesoscale Simulations of Intra-granular Fission Gas Bubbles in UO2 under Post-irradiation Thermal Annealing', we developed a phase-field model to simulate the intra-granular gas bubble evolution in a single crystal during post-irradiation thermal annealing. In this work, we enhanced the model by incorporating thermodynamic and kinetic properties at grain boundaries, which can be obtained from atomistic simulations, to simulate fission gas bubble growth kinetics in polycrystalline UO2 fuels. The model takes into account of gas atom and vacancy diffusion, vacancy trapping and emission at defects, gas atom absorption and resolution at gas bubbles, internal pressure in gas bubbles, elastic interaction between defects and gas bubbles, and the difference of thermodynamic and kinetic properties in matrix and grain boundaries. We applied the model to simulate gas atom segregation at grain boundaries and the effect of interfacial energy and gas mobility on gas bubble morphology and growth kinetics in a bi-crystal UO2 during post-irradiation thermal annealing. The preliminary results demonstrate that the model can produce the equilibrium thermodynamic properties and the morphology of gas bubbles at grain boundaries for given grain boundary properties. More validation of the model capability in polycrystalline is underway.

  20. Comparison between phase field simulations and experimental data from intragranular bubble growth in UO{sub 2}

    SciTech Connect (OSTI)

    Tonks, M. R.; Biner, S. B.; Mille, P. C. [Idaho National Laboratory, P.O. Box 1625 MS 3830, Idaho Falls, ID 83415 (United States); Andersson, D. A. [MST-8, Los Alamos National Laboratory, P.O. Box 1663, Los Alamos, NM 87545 (United States)

    2013-07-01

    In this work, we used the phase field method to simulate the post-irradiation annealing of UO{sub 2} described in the experimental work by Kashibe et al., 1993 [1]. The simulations were carried out in 2D and 3D using the MARMOT FEM-based phase-field modeling framework. The 2-D results compared fairly well with the experiments, in spite of the assumptions made in the model. The 3-D results compare even more favorably to experiments, indicating that diffusion in all three directions must be considered to accurate represent the bubble growth. (authors)

  1. Atomistic Calculations of the Effect of Minor Actinides on Thermodynamic and Kinetic Properties of UO{sub 2{+-}x}

    SciTech Connect (OSTI)

    Deo, Chaitanya; Adnersson, Davis; Battaile, Corbett; uberuaga, Blas

    2012-10-30

    The team will examine how the incorporation of actinide species important for mixed oxide (MOX) and other advanced fuel designs impacts thermodynamic quantities of the host UO{sub 2} nuclear fuel and how Pu, Np, Cm and Am influence oxygen mobility. In many cases, the experimental data is either insufficient or missing. For example, in the case of pure NpO2, there is essentially no experimental data on the hyperstoichiometric form it is not even known if hyperstoichiometry NpO{sub 2{+-}x} is stable. The team will employ atomistic modeling tools to calculate these quantities

  2. Experimental investigations of long-term interactions of molten UO/sub 2/ with MgO and concrete at Argonne National Laboratory. [LMFBR

    SciTech Connect (OSTI)

    Stein, R.P.; Farhadieh, R.; Pedersen, D.R.; Gunther, W.H.; Purviance, R.T.

    1982-01-01

    Experimental work at Argonne is being performed to investigate the long-term molten-core-debris retention capability of the ex-vessel cavity following a postulated meltdown accident. The eventual objective of the work is to determine if normal structural material (concrete) or a specifically selected sacrificial material (MgO) located in the ex-vessel cavity region can effectively contain molten core debris. The materials under investigation at ANL are various types of concrete (limestone, basalt and magnetite) and commercially-available MgO brick. Results are presented of the status of real material experimental investigation at ANL into (1) molten UO/sub 2/ pool heat transfer, (2) long-term molten UO/sub 2/ penetration into concrete and (3) long-term molten UO/sub 2/ penetration into refractory substrates. The decay heating in the fuel has been simulated by direct electrical heating permitting the study of the long-term interaction.

  3. Production of Depleted UO2Kernels for the Advanced Gas-Cooled Reactor Program for Use in TRISO Coating Development

    SciTech Connect (OSTI)

    Collins, J.L.

    2004-12-02

    The main objective of the Depleted UO{sub 2} Kernels Production Task at Oak Ridge National Laboratory (ORNL) was to conduct two small-scale production campaigns to produce 2 kg of UO{sub 2} kernels with diameters of 500 {+-} 20 {micro}m and 3.5 kg of UO{sub 2} kernels with diameters of 350 {+-} 10 {micro}m for the U.S. Department of Energy Advanced Fuel Cycle Initiative Program. The final acceptance requirements for the UO{sub 2} kernels are provided in the first section of this report. The kernels were prepared for use by the ORNL Metals and Ceramics Division in a development study to perfect the triisotropic (TRISO) coating process. It was important that the kernels be strong and near theoretical density, with excellent sphericity, minimal surface roughness, and no cracking. This report gives a detailed description of the production efforts and results as well as an in-depth description of the internal gelation process and its chemistry. It describes the laboratory-scale gel-forming apparatus, optimum broth formulation and operating conditions, preparation of the acid-deficient uranyl nitrate stock solution, the system used to provide uniform broth droplet formation and control, and the process of calcining and sintering UO{sub 3} {center_dot} 2H{sub 2}O microspheres to form dense UO{sub 2} kernels. The report also describes improvements and best past practices for uranium kernel formation via the internal gelation process, which utilizes hexamethylenetetramine and urea. Improvements were made in broth formulation and broth droplet formation and control that made it possible in many of the runs in the campaign to produce the desired 350 {+-} 10-{micro}m-diameter kernels, and to obtain very high yields.

  4. Uranium vacancy mobility at the sigma 5 symmetric tilt grain boundary in UO2

    SciTech Connect (OSTI)

    Uberuaga, Blas P.

    2012-05-02

    An important consequence of the fissioning process occurring during burnup is the formation of fission products. These fission products alter the thermo-mechanical properties of the fuel. They also lead to macroscopic changes in the fuel structure, including the formation of bubbles that are connected to swelling of the fuel. Subsequent release of fission gases increase the pressure in the plenum and can cause changes in the properties of the fuel pin itself. It is thus imperative to understand how fission products, and fission gases in particular, behave within the fuel in order to predict the performance of the fuel under operating conditions. Fission gas redistribution within the fuel is governed by mass transport and the presence of sinks such as impurities, dislocations, and grain boundaries. Thus, to understand how the distribution of fission gases evolves in the fuel, we must understand the underlying transport mechanisms, tied to the concentrations and mobilities of defects within the material, and how these gases interact with microstructural features that might act as sinks. Both of these issues have been addressed in previous work under NEAMS. However, once a fission product has reached a sink, such as a grain boundary, its mobility may be different there than in the grain interior and predicting how, for example, bubbles nucleate within grain boundaries necessitates an understanding of how fission gases diffuse within boundaries. That is the goal of the present work. In this report, we describe atomic level simulations of uranium vacancy diffusion in the pressence of a {Sigma}5 symmetric tilt boundary in urania (UO{sub 2}). This boundary was chosen as it is the simplest of the boundaries we considered in previous work on segregation and serves as a starting point for understanding defect mobility at boundaries. We use a combination of molecular statics calculations and kinetic Monte Carlo (kMC) to determine how the mobility of uranium vacancies is altered at this particular grain boundary. Given that the diffusion of fission gases such as Xe are tied to the mobility of uranium vacancies, these results given insight into how fission gas mobility differs at grain boundaries compared to bulk urania.

  5. Microstructure changes and thermal conductivity reduction in UO2 following 3.9 MeV He2+ ion irradiation

    SciTech Connect (OSTI)

    Janne Pakrinen; Marat Khafizov; Lingfeng He; Chris Wetland; Jian Gan; Andrew T. Nelson; David H Hurley; Anter El-Azab; Todd R Allen

    2014-11-01

    The microstructural changes and associated effects on thermal conductivity were examined in UO2 after irradiation using 3.9 MeV He2+ ions. Lattice expansion of UO2 was observed in x-ray diffraction after ion irradiation up to 5×1016 He2+/cm2 at low-temperature (< 200 °C). Transmission electron microscopy (TEM) showed homogenous irradiation damage across an 8 µm thick plateau region, which consisted of small dislocation loops accompanied by dislocation segments. Dome-shaped blisters were observed at the peak damage region (depth around 8.5 µm) in the sample subjected to 5×1016 He2+/cm2, the highest fluence reached, while similar features were not detected at 9×1015 He2+/cm2. Laser-based thermo-reflectance measurements showed that the thermal conductivity for the irradiated layer decreased about 55 % for the high fluence sample and 35% for the low fluence sample as compared to an un-irradiated reference sample. Detailed analysis for the thermal conductivity indicated that the conductivity reduction was caused by the irradiation induced point defects.

  6. UoA 27 Chemical Engineering: Overview The Panel carried out its assessment work in line with its published Criteria and Working Methods

    E-Print Network [OSTI]

    Abrahams, I. David

    UoA 27 Chemical Engineering: Overview The Panel carried out its assessment work in line with its that some chemical engineering research activity had been submitted to Unit of Assessment 26, General Engineering. The General Engineering Panel had sought cross-referral advice from the Chemical Engineering

  7. UO Department of Chemistry -Faculty Research Interests Berglund, Andy -The primary goals of the Berglund lab are to understand the molecular basis of the human disease myotonic

    E-Print Network [OSTI]

    Cina, Jeff

    measurement, and device fabrication to design, build and study new materials and structures that have applications in solar energy harvesting and electrochemical energy storage. Chartoff, Richard - The UO Polymer relevance to developing technologies. Pluth, Michael D. - Research in the Pluth group focuses on extending

  8. Phase-field simulations of intragranular fission gas bubble evolution in UO2 under post-irradiation thermal annealing

    SciTech Connect (OSTI)

    Li, Yulan; Hu, Shenyang Y.; Montgomery, Robert O.; Gao, Fei; Sun, Xin

    2013-05-15

    Fission gas bubble is one of evolving microstructures, which affect thermal mechanical properties such as thermo-conductivity, gas release, volume swelling, and cracking, in operating nuclear fuels. Therefore, fundamental understanding of gas bubble evolution kinetics is essential to predict the thermodynamic property and performance changes of fuels. In this work, a generic phasefield model was developed to describe the evolution kinetics of intra-granular fission gas bubbles in UO2 fuels under post-irradiation thermal annealing conditions. Free energy functional and model parameters are evaluated from atomistic simulations and experiments. Critical nuclei size of the gas bubble and gas bubble evolution were simulated. A linear relationship between logarithmic bubble number density and logarithmic mean bubble diameter is predicted which is in a good agreement with experimental data.

  9. [La(UO{sub 2})V{sub 2}O{sub 7}][(UO{sub 2})(VO{sub 4})] the first lanthanum uranyl-vanadate with structure built from two types of sheets based upon the uranophane anion-topology

    SciTech Connect (OSTI)

    Mer, A.; Obbade, S.; Rivenet, M.; Renard, C.; Abraham, F.

    2012-01-15

    The new lanthanum uranyl vanadate divanadate, [La(UO{sub 2})V{sub 2}O{sub 7}][(UO{sub 2})(VO{sub 4})] was obtained by reaction at 800 Degree-Sign C between lanthanum chloride, uranium oxide (U{sub 3}O{sub 8}) and vanadium oxide (V{sub 2}O{sub 5}) and the structure was determined from single-crystal X-ray diffraction data. This compound crystallizes in the orthorhombic system with space group P2{sub 1}2{sub 1}2{sub 1} and unit-cell parameters a=6.9470(2) A, b=7.0934(2) A, c=25.7464(6) A, V=1268.73(5) A{sup 3}, Z=4. A full matrix least-squares refinement yielded R{sub 1}=0.0219 for 5493 independent reflections. The crystal structure is characterized by the stacking of uranophane-type sheets {sup 2}{sub {infinity}}[(UO{sub 2})(VO{sub 4})]{sup -} and double layers {sup 2}{sub {infinity}}[La(UO{sub 2})(V{sub 2}O{sub 7})]{sup +} connected through La-O bonds involving the uranyl oxygen of the uranyl-vanadate sheets. The double layers result from the connection of two {sup 2}{sub {infinity}}[La(UO{sub 2})(VO{sub 4}){sub 2}]{sup -} sheets derived from the uranophane anion-topology by replacing half of the uranyl ions by lanthanum atoms and connected through the formation of divanadate entities. - Graphical abstract: A view of the three-dimensional structure of [La(UO{sub 2})V{sub 2}O{sub 7}][(UO{sub 2})(VO{sub 4})]. Highlights: Black-Right-Pointing-Pointer New lanthanum uranyl vanadate divanadate has been synthesized. Black-Right-Pointing-Pointer Structure was determined from single-crystal X-ray diffraction data. Black-Right-Pointing-Pointer Structure is characterized by uranophane-type sheets and double layers {sup 2}{sub {infinity}}[La(UO{sub 2})(V{sub 2}O{sub 7})]{sup +}.

  10. Topologically identical, but geometrically isomeric layers in hydrous ?-, ?-Rb[UO{sub 2}(AsO{sub 3}OH)(AsO{sub 2}(OH){sub 2})]·H{sub 2}O and anhydrous Rb[UO{sub 2}(AsO{sub 3}OH)(AsO{sub 2}(OH){sub 2})

    SciTech Connect (OSTI)

    Yu, Na; Klepov, Vladislav V. [Forschungszentrum Jülich GmbH, Institute for Energy and Climate Research (IEK-6), 52428 Jülich (Germany); Villa, Eric M. [Department of Chemistry, Creighton University, 2500 California Plaza, Omaha NE 68178 (United States); Bosbach, Dirk [Forschungszentrum Jülich GmbH, Institute for Energy and Climate Research (IEK-6), 52428 Jülich (Germany); Suleimanov, Evgeny V. [Department of Chemistry, Lobachevsky State University of Nizhny Novgorod, 603950 Nizhny Novgorod (Russian Federation); Depmeier, Wulf [Institut für Geowissenschaften, Universität zu Kiel, 24118 Kiel (Germany); Albrecht-Schmitt, Thomas E., E-mail: albrecht-schmitt@chem.fsu.edu [Department of Chemistry and Biochemistry, Florida State University, 102 Varsity Way, Tallahassee, FL 32306-4390 (United States); Alekseev, Evgeny V., E-mail: e.alekseev@fz-juelich.de [Forschungszentrum Jülich GmbH, Institute for Energy and Climate Research (IEK-6), 52428 Jülich (Germany); Institut für Kristallographie, RWTH Aachen University, 52066 Aachen (Germany)

    2014-07-01

    The hydrothermal reaction of uranyl nitrate with rubidium nitrate and arsenic (III) oxide results in the formation of polymorphic ?- and ?-Rb[UO{sub 2}(AsO{sub 3}OH)(AsO{sub 2}(OH){sub 2})]·H{sub 2}O (?-, ?-RbUAs) and the anhydrous phase Rb[UO{sub 2}(AsO{sub 3}OH)(AsO{sub 2}(OH){sub 2})] (RbUAs). These phases were structurally, chemically and spectroscopically characterized. The structures of all three compounds are based upon topologically identical, but geometrically isomeric layers. The layers are linked with each other by means of the Rb cations and hydrogen bonding. Dehydration experiments demonstrate that water deintercalation from hydrous ?- and ?-RbUAs yields anhydrous RbUAs via topotactic reactions. - Graphical abstract: Three different layer geometries observed in the structures of Rb[UO{sub 2}(AsO{sub 3}OH)(AsO{sub 2}(OH){sub 2})] and ?- and ?- Rb[UO{sub 2}(AsO{sub 3}OH)(AsO{sub 2}(OH){sub 2})]·H{sub 2}O. Two different coordination environments of uranium polyhedra (types I and II) are shown schematically on the top of the figure. - Highlights: • Three new uranyl arsenates were synthesized from the hydrothermal reactions. • The phases consist of the topologically identical but geometrically different layers. • Topotactic transitions were observed in the processes of mono-hyrates dehydration.

  11. Atomistic modeling of intrinsic and radiation-enhanced fission gas (Xe) diffusion in UO2 +/- x: Implications for nuclear fuel performance modeling

    SciTech Connect (OSTI)

    Giovanni Pastore; Michael R. Tonks; Derek R. Gaston; Richard L. Williamson; David Andrs; Richard Martineau

    2014-03-01

    Based on density functional theory (DFT) and empirical potential calculations, the diffusivity of fission gas atoms (Xe) in UO2 nuclear fuel has been calculated for a range of non-stoichiometry (i.e. UO2x), under both out-of-pile (no irradiation) and in-pile (irradiation) conditions. This was achieved by first deriving expressions for the activation energy that account for the type of trap site that the fission gas atoms occupy, which includes the corresponding type of mobile cluster, the charge state of these defects and the chemistry acting as boundary condition. In the next step DFT calculations were used to estimate migration barriers and internal energy contributions to the thermodynamic properties and calculations based on empirical potentials were used to estimate defect formation and migration entropies (i.e. pre-exponentials). The diffusivities calculated for out-of-pile conditions as function of the UO2x nonstoichiometrywere used to validate the accuracy of the diffusion models and the DFT calculations against available experimental data. The Xe diffusivity is predicted to depend strongly on the UO2x non-stoichiometry due to a combination of changes in the preferred Xe trap site and in the concentration of uranium vacancies enabling Xe diffusion, which is consistent with experiments. After establishing the validity of the modeling approach, it was used for studying Xe diffusion under in-pile conditions, for which experimental data is very scarce. The radiation-enhanced Xe diffusivity is compared to existing empirical models. Finally, the predicted fission gas diffusion rates were implemented in the BISON fuel performance code and fission gas release from a Risø fuel rod irradiation experiment was simulated. 2014 Elsevier B.V. All rights

  12. Reactivity-worth estimates of the OSMOSE samples in the MINERVE reactor R1-MOX, R2-UO2 and MORGANE/R configurations.

    SciTech Connect (OSTI)

    Zhong, Z.; Klann, R. T.; Nuclear Engineering Division

    2007-08-03

    An initial series of calculations of the reactivity-worth of the OSMOSE samples in the MINERVE reactor with the R2-UO2 and MORGANE/R core configuration were completed. The calculation model was generated using the lattice physics code DRAGON. In addition, an initial comparison of calculated values to experimental measurements was performed based on preliminary results for the R1-MOX configuration.

  13. The relative variational model - A topological view of matter and its properties: UO{sub 2}{sup {+-}x} density

    SciTech Connect (OSTI)

    Dias, M. S.; De Vasconcelos, V.; Mattos, J. R. L.; Lameiras, F. S. [Center for Development of the Nuclear Technology - CDTN, National Commission for the Nuclear Energy - CNEN, PO Box: 941, 30.161-970, Belo Horizonte, Minas Gerais (Brazil); Jordao, E. [Chemistry Engineering Dept., Campinas State Univ., FEQ/UNICAMP, Av. Albert Einstein, 500, 13083-852, Campinas, Sao Paulo (Brazil)

    2012-07-01

    Formal definitions of convergence, connected-ness and continuity were established to characterize and describe the crystalline solid and its properties as a unified notion in the topological space. The crystalline solid is a previously empty space that has been filled with atoms and phonons, i.e., the crystal is built with packages of matter and energy in a regular and orderly repetitive pattern along three orthogonal dimensions of the space. The spatial occupation of the atom in the crystal structure is determined by its mean vibrational volume. Thus, the changes of volume and the changes of internal energy are intrinsically linked. In fact, physical and material properties are the interdependent and bijective quantifications associated with variations of the internal energy. These properties are modeled by means of an intrinsic and invariable form function: the Relative Variational Model. In this paper, the lattice parameter and specific mass of UO{sub 2}{sup {+-}x} are depicted in dependence on the variations of the stoichiometry in the band of -0.016 {<=} x and <0.25 and temperature from 0 K up to melting point. (authors)

  14. Dispersion of UO{sub 2}F{sub 2} aerosol and HF vapor in the operating floor during winter ventilation at the Paducah Gaseous Diffusion Plant

    SciTech Connect (OSTI)

    Kim, S.H.; Chen, N.C.J.; Taleyarkhan, R.P.; Keith, K.D.; Schmidt, R.W. [Oak Ridge National Lab., TN (United States); Carter, J.C. [J.C. Carter Associates, Inc., Knoxville, TN (United States)

    1996-12-30

    The gaseous diffusion process is currently employed at two plants in the US: the Paducah Gaseous Diffusion Plant and the Portsmouth Gaseous Diffusion Plant. As part of a facility-wide safety evaluation, a postulated design basis accident involving large line-rupture induced releases of uranium hexafluoride (UF{sub 6}) into the process building of a gaseous diffusion plant (GDP) is evaluated. When UF{sub 6} is released into the atmosphere, it undergoes an exothermic chemical reaction with moisture (H{sub 2}O) in the air to form vaporized hydrogen fluoride (HF) and aerosolized uranyl fluoride (UO{sub 2}F{sub 2}). These reactants disperse in the process building and transport through the building ventilation system. The ventilation system draws outside air into the process building, distributes it evenly throughout the building, and discharges it to the atmosphere at an elevated temperature. Since air is recirculated from the cell floor area to the operating floor, issues concerning in-building worker safety and evacuation need to be addressed. Therefore, the objective of this study is to evaluate the transport of HF vapor and UO{sub 2}F{sub 2} aerosols throughout the operating floor area following B-line break accident in the cell floor area.

  15. Criticality Safety Study of UF6and UO2F2in 8-in. Inner Diameter Piping

    SciTech Connect (OSTI)

    Elam, K.R.

    2003-10-07

    The purpose of this report is to provide an evaluation of the criticality safety aspects of using up to 8-in.-inner-diameter (ID) piping as part of a system to monitor the {sup 235}U enrichment in uranium hexafluoride (UF{sub 6}) gas both before and after an enrichment down-blending operation. The evaluated operation does not include the blending stage but includes only the monitors and the piping directly associated with the monitors, which are in a separate room from the blending operation. There are active controls in place to limit the enrichment of the blended UF{sub 6} to a maximum of 5 weight percent (wt%) {sup 235}U. Under normal operating conditions of temperature and pressure, the UF{sub 6} will stay in the gas phase and criticality will not be credible. The two accidents of concern are solidification of the UF{sub 6} along with some hydrofluoric acid (HF) and water or moisture ingress, which would cause the UF{sub 6} gas to react and form a hydrated uranyl fluoride (UO{sub 2}F{sub 2}) solid or solution. Of these two types of accidents, the addition of water and formation of UO{sub 2}F{sub 2} is the most reactive scenario and thus limits related to UO{sub 2}F{sub 2} will bound the limits related to UF{sub 6}. Two types of systems are included in the monitoring process. The first measures the enrichment of the approximately 90 wt% enriched UF{sub 6} before it is blended. This system uses a maximum 4-in.-(10.16-cm-) ID pipe, which is smaller than the 13.7-cm-cylinder-diameter subcritical limit for UO{sub 2}F{sub 2} solution of any enrichment as given in Table 1 of American National Standard ANSI/ANS-8.1.1 Therefore, this system poses no criticality concerns for either accident scenario. The second type of system includes two enrichment monitors for lower-enriched UF{sub 6}. One monitors the approximately 1.5 wt% enriched UF{sub 6} entering the blending process, and the second monitors the approximately 5 wt% enriched UF{sub 6} coming out of the blending process. Both use a maximum 8-in.-(20.32-cm-) ID piping, where the length of the larger ID piping is approximately 9.5 m. This diameter of piping is below the 26.6-cm-cylinder-diameter subcritical limit for 5 wt% enriched UO{sub 2}F{sub 2} solutions as given in Table 6 of ANSI/ANS-8.1. Therefore, for up to 5 wt% enriched UF{sub 6}, this piping does not present a criticality concern for either accident scenario. Calculations were performed to determine the enrichment level at which criticality could become a concern in these 8-in.-ID piping sections. Both unreflected and fully water-reflected conditions were considered.

  16. 2. HIGH-LOv~ JUNCTION FORY_,\\'UO AN EXPERIMENTAL STUDY OF AL-ALLOYED:'p+ JUNCT;[ONS FOR SSF SOLAR CELT.S As temperature rises en..!."

    E-Print Network [OSTI]

    del Alamo, Jesús A.

    . Luque formed. The deposited Al diss Instituto de Energia Solar {E.T,S,I.T,} phase composition given2. HIGH-LOv~ JUNCTION FORY_,\\'UO AN EXPERIMENTAL STUDY OF AL-ALLOYED:§'p+ JUNCT;[ONS FOR SSF SOLAR+pp+ bifacial SSF solar cells are used to experimentally analyse the interphase in a similar way a 5i layer

  17. Fission gas and iodine release measured in IFA-430 up to 15 GWd/t UO/sub 2/ burnup. [PWR; BWR

    SciTech Connect (OSTI)

    Appelhans, A.D.; Turnbull, J.A.; White, R.J.

    1983-01-01

    The release of fission products from fuel pellets to the fuel-cladding gap is dependent on the fuel temperature, the power (fission rate) and the burnup (fuel structure). As part of the US Nuclear Regulatory Commission's Fuel Behavior Program, EG and G Idaho, Inc., is conducting fission product release studies in the Heavy Boiling Water Reactor in Halden, Norway. This paper presents a summary of the results up to December, 1982. The data cover fuel centerline temperatures ranging from 700 to 1500/sup 0/C for average linear heat ratings of 16 to 35 kW/m. The measurements have been performed for the period between 4.2 and 14.8 GWd/t UO/sub 2/ of burnup of the Instrumented Fuel Assembly 430 (IFA-430). The measurement program has been directed toward quantifying the release of the short-lived radioactive noble gases and iodines.

  18. LWR fuel assembly designs for the transmutation of LWR Spent Fuel TRU with FCM and UO{sub 2}-ThO{sub 2} Fuels

    SciTech Connect (OSTI)

    Bae, G.; Hong, S. G.

    2013-07-01

    In this paper, transmutation of transuranic (TRU) nuclides from LWR spent fuels is studied by using LWR fuel assemblies which consist of UO{sub 2}-ThO{sub 2} fuel pins and FCM (Fully Ceramic Microencapsulated) fuel pins. TRU from LWR spent fuel is loaded in the kernels of the TRISO particle fuels of FCM fuel pins. In the FCM fuel pins, the TRISO particle fuels are distributed in SiC matrix having high thermal conductivity. The loading patterns of fuel pins and the fuel compositions are searched to have high transmutation rate and feasible neutronic parameters including pin power peaking, temperature reactivity coefficients, and cycle length. All studies are done only in fuel assembly calculation level. The results show that our fuel assembly designs have good transmutation performances without multi-recycling and without degradation of the safety-related neutronic parameters. (authors)

  19. Derivation of effective fission gas diffusivities in UO2 from lower length scale simulations and implementation of fission gas diffusion models in BISON

    SciTech Connect (OSTI)

    Andersson, Anders David Ragnar; Pastore, Giovanni; Liu, Xiang-Yang; Perriot, Romain Thibault; Tonks, Michael; Stanek, Christopher Richard

    2014-11-07

    This report summarizes the development of new fission gas diffusion models from lower length scale simulations and assessment of these models in terms of annealing experiments and fission gas release simulations using the BISON fuel performance code. Based on the mechanisms established from density functional theory (DFT) and empirical potential calculations, continuum models for diffusion of xenon (Xe) in UO2 were derived for both intrinsic conditions and under irradiation. The importance of the large XeU3O cluster (a Xe atom in a uranium + oxygen vacancy trap site with two bound uranium vacancies) is emphasized, which is a consequence of its high mobility and stability. These models were implemented in the MARMOT phase field code, which is used to calculate effective Xe diffusivities for various irradiation conditions. The effective diffusivities were used in BISON to calculate fission gas release for a number of test cases. The results are assessed against experimental data and future directions for research are outlined based on the conclusions.

  20. Final report on accident tolerant fuel performance analysis of APMT-Steel Clad/UO? fuel and APMT-Steel Clad/UN-U?Si? fuel concepts

    SciTech Connect (OSTI)

    Unal, Cetin; Galloway, Jack D.

    2014-09-12

    In FY2014 our group completed and documented analysis of new Accident Tolerant Fuel (ATF) concepts using BISON. We have modeled the viability of moving from Zircaloy to stainless steel cladding in traditional light water reactors (LWRs). We have explored the reactivity penalty of this change using the MCNP-based burnup code Monteburns, while attempting to minimize this penalty by increasing the fuel pellet radius and decreasing the cladding thickness. Fuel performance simulations using BISON have also been performed to quantify changes to structural integrity resulting from thinner stainless steel claddings. We account for thermal and irradiation creep, fission gas swelling, thermal swelling and fuel relocation in the models for both Zircaloy and stainless steel claddings. Additional models that account for the lower oxidation stainless steel APMT are also invoked where available. Irradiation data for HT9 is used as a fallback in the absence of appropriate models. In this study the isotopic vectors within each natural element are varied to assess potential reactivity gains if advanced enrichment capabilities were levied towards cladding technologies. Recommendations on cladding thicknesses for a robust cladding as well as the constitutive components of a less penalizing composition are provided. In the first section (section 1-3), we present results accepted for publication in the 2014 TOPFUEL conference regarding the APMT/UO? ATF concept (J. Galloway & C. Unal, Accident Tolerant and Neutronically Favorable LWR Cladding, Proceedings of WRFPM 2014, Sendai, Japan, Paper No.1000050). Next we discuss our preliminary findings from the thermo-mechanical analysis of UN-U?Si? fuel with APMT clad. In this analysis we used models developed from limited data that need to be updated when the irradiation data from ATF-1 test is available. Initial results indicate a swelling rate less than 1.5% is needed to prevent excessive clad stress.

  1. Mesoscale Benchmark Demonstration Problem 1: Mesoscale Simulations of Intra-granular Fission Gas Bubbles in UO2 under Post-irradiation Thermal Annealing

    SciTech Connect (OSTI)

    Li, Yulan; Hu, Shenyang Y.; Montgomery, Robert; Gao, Fei; Sun, Xin; Tonks, Michael; Biner, Bullent; Millet, Paul; Tikare, Veena; Radhakrishnan, Balasubramaniam; Andersson , David

    2012-04-11

    A study was conducted to evaluate the capabilities of different numerical methods used to represent microstructure behavior at the mesoscale for irradiated material using an idealized benchmark problem. The purpose of the mesoscale benchmark problem was to provide a common basis to assess several mesoscale methods with the objective of identifying the strengths and areas of improvement in the predictive modeling of microstructure evolution. In this work, mesoscale models (phase-field, Potts, and kinetic Monte Carlo) developed by PNNL, INL, SNL, and ORNL were used to calculate the evolution kinetics of intra-granular fission gas bubbles in UO2 fuel under post-irradiation thermal annealing conditions. The benchmark problem was constructed to include important microstructural evolution mechanisms on the kinetics of intra-granular fission gas bubble behavior such as the atomic diffusion of Xe atoms, U vacancies, and O vacancies, the effect of vacancy capture and emission from defects, and the elastic interaction of non-equilibrium gas bubbles. An idealized set of assumptions was imposed on the benchmark problem to simplify the mechanisms considered. The capability and numerical efficiency of different models are compared against selected experimental and simulation results. These comparisons find that the phase-field methods, by the nature of the free energy formulation, are able to represent a larger subset of the mechanisms influencing the intra-granular bubble growth and coarsening mechanisms in the idealized benchmark problem as compared to the Potts and kinetic Monte Carlo methods. It is recognized that the mesoscale benchmark problem as formulated does not specifically highlight the strengths of the discrete particle modeling used in the Potts and kinetic Monte Carlo methods. Future efforts are recommended to construct increasingly more complex mesoscale benchmark problems to further verify and validate the predictive capabilities of the mesoscale modeling methods used in this study.

  2. AREVA NP next generation fresh UO{sub 2} fuel assembly shipping cask: SCALE - CRISTAL comparisons lead to safety criticality confidence

    SciTech Connect (OSTI)

    Doucet, M.; Landrieu, M.; Montgomery, R.; O' Donnell, B.

    2007-07-01

    AREVA NP as a worldwide PWR fuel provider has to have a fleet of fresh UO{sub 2} shipping casks being agreed within a lot of countries including USA, France, Germany, Belgium, Sweden, China, and South Africa - and to accommodate foreseen EPR Nuclear Power Plants fuel buildings. To reach this target the AREVA NP Fuel Sector decided to develop an up-to-date shipping cask (so called MAP project) gathering experience feedback of the today fleet and an improved safety allowing the design to comply with international regulations (NRC and IAEA) and local Safety Authorities. Based on pre design features a safety case was set up to highlight safety margins. Criticality hypothetical accidental assumptions were defined: - Preferential flooding; - Fuel rod lattice pitch expansion for full length of fuel assemblies; - Neutron absorber penalty; -... Well known computer codes, American SCALE package and French CRISTAL package, were used to check configurations reactivity and to ensure that both codes lead to coherent results. Basic spectral calculations are based on similar algorithms with specific microscopic cross sections ENDF/BV for SCALE and JEF2.2 for CRISTAL. The main differences between the two packages is on one hand SCALE's three dimensional fuel assembly geometry is described by a pin by pin model while an homogenized fuel assembly description is used by CRISTAL and on the other hand SCALE is working with either 44 or 238 neutron energy groups while CRISTAL is with a 172 neutron energy groups. Those two computer packages rely on a wide validation process helping defining uncertainties as required by regulations in force. The shipping cask with two fuel assemblies is designed to maximize fuel isolation inside a cask and with neighboring ones even for large array configuration cases. Proven industrial products are used: - Boral{sup TM} as neutron absorber; - High density polyethylene (HDPE) or Nylon as neutron moderator; - Foam as thermal and mechanical protection. The cask is designed to handle the complete AREVA NP fuel assembly types from the 14x14 to the 18x18 design with a {sup 235}U enrichment up to 5.0% enriched natural uranium (ENU) and enriched reprocessed uranium (ERU). After a brief presentation of the computer codes and the description of the shipping cask, calculation results and comparisons between SCALE and CRISTAL will be discussed. (authors)

  3. Pipe diffusion at dislocations in UO2

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformationJesseworkSURVEYI/OPerformancePi Day Pi Day Pi Day is anPiotr ZbiegielFUEL.P8.01

  4. PUREX/UO{sub 3} facilities deactivation lessons learned: History

    SciTech Connect (OSTI)

    Gerber, M.S.

    1997-11-25

    In May 1997, a historic deactivation project at the PUREX (Plutonium URanium EXtraction) facility at the Hanford Site in south-central Washington State concluded its activities (Figure ES-1). The project work was finished at $78 million under its original budget of $222.5 million, and 16 months ahead of schedule. Closely watched throughout the US Department of Energy (DOE) complex and by the US Department of Defense for the value of its lessons learned, the PUREX Deactivation Project has become the national model for the safe transition of contaminated facilities to shut down status.

  5. Modeling of Fission Gas Release in UO2

    SciTech Connect (OSTI)

    MH Krohn

    2006-01-23

    A two-stage gas release model was examined to determine if it could provide a physically realistic and accurate model for fission gas release under Prometheus conditions. The single-stage Booth model [1], which is often used to calculate fission gas release, is considered to be oversimplified and not representative of the mechanisms that occur during fission gas release. Two-stage gas release models require saturation at the grain boundaries before gas is release, leading to a time delay in release of gases generated in the fuel. Two versions of a two-stage model developed by Forsberg and Massih [2] were implemented using Mathcad [3]. The original Forsbers and Massih model [2] and a modified version of the Forsberg and Massih model that is used in a commercially available fuel performance code (FRAPCON-3) [4] were examined. After an examination of these models, it is apparent that without further development and validation neither of these models should be used to calculate fission gas release under Prometheus-type conditions. There is too much uncertainty in the input parameters used in the models. In addition. the data used to tune the modified Forsberg and Massih model (FRAPCON-3) was collected under commercial reactor conditions, which will have higher fission rates relative to Prometheus conditions [4].

  6. Microstructure changes and thermal conductivity reduction in UO2 following

    Office of Scientific and Technical Information (OSTI)

    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 Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfate Reducing(JournalspectroscopyReport) |(Patent)Inter-Nucleon InteractionsElectron Beam2}CuO{sub3.9

  7. Migration Mechanisms of Oxygen Interstitial Clusters in UO2 (Journal

    Office of Scientific and Technical Information (OSTI)

    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 Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfate Reducing(JournalspectroscopyReport) |(Patent)Inter-Nucleon InteractionsElectronArticle) |

  8. Oxidative Dissolution of UO2 in a Simulated Groundwater Containing

    Office of Scientific and Technical Information (OSTI)

    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 Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTech ConnectSpeeding access to(Conference) |of lithium-ion cells (JournalSynthetic

  9. Oxidative Dissolution of UO2 in a Simulated Groundwater Containing

    Office of Scientific and Technical Information (OSTI)

    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 Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTech ConnectSpeeding access to(Conference) |of lithium-ion cells

  10. Recovery of UO{sub 2}/PuO{sub 2} in IFR electrorefining process

    DOE Patents [OSTI]

    Tomczuk, Z.; Miller, W.E.

    1992-01-01

    This invention is comprised of a process for converting PuO{sub 2} and U0{sub 2} present in an electrorefiner to the chlorides, by contacting the PuO{sub 2} and U0{sub 2} with Li metal in the presence of an alkali metal chloride salt substantially free of rare earth and actinide chlorides for a time and at a temperature sufficient to convert the U0{sub 2} and PuO{sub 2} to metals while converting Li metal to Li{sub 2}O. Li{sub 2}O is removed either by reducing with rare earth metals or by providing an oxygen electrode for transporting 0{sub 2} out of the electrorefiner and a cathode, and thereafter applying an emf to the electrorefiner electrodes sufficient to cause the Li{sub 2}O to disassociate to 0{sub 2} and Li metal but insufficient to decompose the alkali metal chloride salt. The U and Pu and excess lithium are then converted to chlorides by reaction with CdCl{sub 2}.

  11. UNIVERSITY NEWS AND PEOPLE OF THE UO EEP IN THE BASEMENT OF PACIFIC

    E-Print Network [OSTI]

    a small volume of water from a tube, producing a traveling vortex ring in water. The intent is to figure out how to control the swirl- ing ring. "The vortex of fluid dynamics is not understood," Johnson says

  12. OVERVIEW: UoA 22 PURE MATHEMATICS 1. Conduct of the assessment.

    E-Print Network [OSTI]

    Abrahams, I. David

    from 14 UK institutions according to their specialisations. A significant proportion was considered, there was a wide variation in the performance of institutions within these categories. This figure constituted submitted are slightly different, more were putting forward a higher proportion of staff than in 1996

  13. Materials Data on La6UO12 (SG:148) by Materials Project

    SciTech Connect (OSTI)

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  14. Materials Data on BaUO3 (SG:62) by Materials Project

    SciTech Connect (OSTI)

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  15. Materials Data on SrUO4 (SG:166) by Materials Project

    SciTech Connect (OSTI)

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  16. Project report to STB/UO, Northern New Mexico Community College two- year college initiative: Biotechnology

    SciTech Connect (OSTI)

    1996-03-01

    This report summarizes the experiences gained in a project involving faculty direct undergraduate research focused on biotechnology and its applications. The biology program at Northern New Mexico Community College has been involved in screening for mutations in human DNA and has developed the ability to perform many standard and advanced molecular biology techniques. Most of these are based around the polymerase chain reaction (PCR) and include the use of single strand conformation polymorphism analysis (SSCP), denaturing gradient gel electrophoresis (DGGE) in the screening for mutant DNA molecules, and the capability to sequence PCR generated fragments of DNA using non-isotopic imaging. At Northern, these activities have a two-fold objective: (1) to bring current molecular biology techniques to the teaching laboratory, and (2) to support the training of minority undergraduates in research areas that stimulate them to pursue advanced degrees in the sciences.

  17. THE REDISTRIBUTION OF RUTHENIUM IN UO2 IN A TEMPERATURE GRADIENT

    E-Print Network [OSTI]

    Zhou, S.Y.

    2010-01-01

    of Metallic Fission Products in Reactor Oxide Fuels", Nucl.of metallic fission products in oxide fuel elements.metallic inclusions distributed along grain boundaries or in the central void of the fuel

  18. A grant from the UO Tom and Carol Williams Fund for Undergraduate

    E-Print Network [OSTI]

    the opportunity to create a documentary film that outlines the life of one man. My film, Carlos Enrique Marquez focuses winter term on giving a theoretical, documentary, and ethnographic understanding of the processes teaches students how to produce a short video documentary from oral history interviews. Following

  19. OSMOSE program : statistical review of oscillation measurements in the MINERVE reactor R1-UO2 configuration.

    SciTech Connect (OSTI)

    Stoven, G.; Klann, R.; Zhong, Z.; Nuclear Engineering Division

    2007-08-28

    The OSMOSE program is a collaboration on reactor physics experiments between the United States Department of Energy and the France Commissariat Energie Atomique. At the working level, it is a collaborative effort between the Argonne National Laboratory and the CEA Cadarache Research Center. The objective of this program is to measure very accurate integral reaction rates in representative spectra for the actinides important to future nuclear system designs, and to provide the experimental data for improving the basic nuclear data files. The main outcome of the OSMOSE measurement program will be an experimental database of reactivity-worth measurements in different neutron spectra for the heavy nuclides. This database can then be used as a benchmark to verify and validate reactor analysis codes. The OSMOSE program (Oscillation in Minerve of isotopes in Eupraxic Spectra) aims at improving neutronic predictions of advanced nuclear fuels through oscillation measurements in the MINERVE facility on samples containing the following separated actinides: {sup 232}Th, {sup 233}U, {sup 234}U, {sup 235}U, {sup 236}U, {sup 238}U, {sup 237}Np, {sup 238}Pu, {sup 239}Pu, {sup 240}Pu, {sup 241}Pu, {sup 242}Pu, {sup 241}Am, {sup 243}Am, {sup 244}Cm, and {sup 245}Cm. The first part of this report provides an overview of the experimental protocol and the typical processing of a series of experimental results which is currently performed at CEA-Cadarache. In the second part of the report, improvements to this technique are presented, as well as the program that was created to process oscillation measurement results from the MINERVE facility in the future.

  20. Materials Data on Na3UO4 (SG:65) by Materials Project

    SciTech Connect (OSTI)

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  1. Bradley / adapted by UoE URPO Date of version 1

    E-Print Network [OSTI]

    Bearhop, Stuart

    Telephone: (309) 677-2700 Fax: (309)677-3534 AUTHORIZATION FOR RELEASE OF INFORMATION I authorize Bradley

  2. Random-Walk Monte Carlo Simulation of Intergranular Gas Bubble Nucleation in UO2 Fuel

    SciTech Connect (OSTI)

    Yongfeng Zhang; Michael R. Tonks; S. B. Biner; D.A. Andersson

    2012-11-01

    Using a random-walk particle algorithm, we investigate the clustering of fission gas atoms on grain bound- aries in oxide fuels. The computational algorithm implemented in this work considers a planar surface representing a grain boundary on which particles appear at a rate dictated by the Booth flux, migrate two dimensionally according to their grain boundary diffusivity, and coalesce by random encounters. Specifically, the intergranular bubble nucleation density is the key variable we investigate using a parametric study in which the temperature, grain boundary gas diffusivity, and grain boundary segregation energy are varied. The results reveal that the grain boundary bubble nucleation density can vary widely due to these three parameters, which may be an important factor in the observed variability in intergranular bubble percolation among grain boundaries in oxide fuel during fission gas release.

  3. Dissolution of Irradiated Commercial UO2 Fuels in Ammonium Carbonate and Hydrogen Peroxide

    SciTech Connect (OSTI)

    Soderquist, Chuck Z.; Johnsen, Amanda M.; McNamara, Bruce K.; Hanson, Brady D.; Chenault, Jeffrey W.; Carson, Katharine J.; Peper, Shane M.

    2011-01-18

    We propose and test a disposition path for irradiated nuclear fuel using ammonium carbonate and hydrogen peroxide media. We demonstrate on a 13 g scale that >98% of the irradiated fuel dissolves. Subsequent expulsion of carbonate from the dissolver solution precipitates >95% of the plutonium, americium, curium, and substantial amounts of fission products, effectively partitioning the fuel at the dissolution step. Uranium can be easily recovered from solution by any of several means, such as ion exchange, solvent extraction, or direct precipitation. Ammonium carbonate can be evaporated from solution and recovered for re-use, leaving an extremely compact volume of fission products, transactinides, and uranium. Stack emissions are predicted to be less toxic, less radioactive, chemically simpler, and simpler to treat than those from the conventional PUREX process.

  4. Emergent Properties of the Bose-Einstein-Hubbard Condensate in UO2(+x)

    Office of Scientific and Technical Information (OSTI)

    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 Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfate Reducing(Journal Article) | SciTech(Journal Article)at theReport) |in QCD: Thethe

  5. Emergent Properties of the Bose-Einstein-Hubbard Condensate in UO2(+x)

    Office of Scientific and Technical Information (OSTI)

    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 Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfate Reducing(Journal Article) | SciTech(Journal Article)at theReport) |in QCD: Thethe(Technical

  6. Final Report: Manganese Redox Mediation of UO2 Stability and Uranium Fate

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverse (Journal Article) |Final Report Document Number(Technical Report)in the

  7. High Thermal Conductivity UO2-BeO Nulcear Fuel: Neutronic Performance Assessments and Overview of Fabrication 

    E-Print Network [OSTI]

    Naramore, Michael J

    2010-08-03

    is very prominent and porosity helps alleviate internal pressures to reduce fuel deformation. Therefore, a balance between thermal conductivity and fission gas accommodation is necessary to achieve a long lasting fuel [4]. 4> F c.> ::>oz 00 c.> 3 -l F...................................................................................................................78 APPENDIX G ..................................................................................................................82...

  8. RELAP5/MOD3.2 analysis of a VVER-1000 reactor with UO[2] fuel and MOX fuel 

    E-Print Network [OSTI]

    Fu, Chun

    2000-01-01

    is calculated with ANS decay heat data, enables the model to be used for analysis of a large spectrum of transients and accidents. The plant model is used for analysis and prediction of a cold leg Large Break Loss-of-Coolant Accident (LBLOCA). The RELAP5/MOD3...

  9. Fully-coupled engineering and mesoscale simulations of thermal conductivity in UO2 fuel using an implicit multiscale approach

    SciTech Connect (OSTI)

    Michael Tonks; Derek Gaston; Cody Permann; Paul Millett; Glen Hansen; Chris Newman

    2009-08-01

    Reactor fuel performance is sensitive to microstructure changes during irradiation (such as fission gas and pore formation). This study proposes an approach to capture microstructural changes in the fuel by a two-way coupling of a mesoscale phase field irradiation model to an engineering scale, finite element calculation. This work solves the multiphysics equation system at the engineering-scale in a parallel, fully-coupled, fully-implicit manner using a preconditioned Jacobian-free Newton Krylov method (JFNK). A sampling of the temperature at the Gauss points of the coarse scale is passed to a parallel sequence of mesoscale calculations within the JFNK function evaluation phase of the calculation. The mesoscale thermal conductivity is calculated in parallel, and the result is passed back to the engineering-scale calculation. As this algorithm is fully contained within the JFNK function evaluation, the mesoscale calculation is nonlinearly consistent with the engineering-scale calculation. Further, the action of the Jacobian is also consistent, so the composite algorithm provides the strong nonlinear convergence properties of Newton's method. The coupled model using INL's \\bison\\ code demonstrates quadratic nonlinear convergence and good parallel scalability. Initial results predict the formation of large pores in the hotter center of the pellet, but few pores on the outer circumference. Thus, the thermal conductivity is is reduced in the center of the pellet, leading to a higher internal temperature than that in an unirradiated pellet.

  10. A literature review on the chemical and physical properties of uranyl fluoride (UO sub 2 F sub 2 )

    SciTech Connect (OSTI)

    Myers, W.L. (Los Alamos National Lab., NM (USA) Illinois Univ., Urbana, IL (USA). Dept. of Nuclear Engineering)

    1990-08-01

    This report reviews the preparation and properties of uranyl fluoride. Data are given on the crystal structure, solubility in water, specific gravity, density, specific heat, enthalpy, entropy, acidity, corrosion properties, and refractive indices. Empirical formulas are given to calculate specific gravity, density of aqueous solutions, molal volume, and refractive indices. 13 refs., 3 figs., 11 tabs.

  11. Chemistry Transfer Evaluations Before requesting a transfer evaluation, please look up your courses on the UO Transfer Credit

    E-Print Network [OSTI]

    Cina, Jeff

    Chemistry Transfer Evaluations Before requesting a transfer evaluation, please look up your courses://registrar.uoregon.edu/current_students/transfer-articulation If your Chemistry courses have not been evaluated, or if you feel the evaluation is not correct, then fill out this form and bring it and the associated documents to a Chemistry advisor. Name

  12. E&nr Ph. S. W.. Wahhgt~n. D.C. 200242174, TIkpbnc (202) 48a60uo

    Office of Legacy Management (LM)

    Cornell University and Medical College Fordham University Long Island College of Medicine. Polytechnic Institute of Brooklyn Rensselaer Polytechnic Institute Rockefeller...

  13. E&nr Ph. S. W.. Wahhgt~n. D.C. 200242174, TIkpbnc (202) 48a60uo

    Office of Legacy Management (LM)

    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 Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE-SessionsSouth DakotaRobbins and Myers CoMadison -T: Designation ofSEP 2Dr.Wm.*

  14. Y H-S I-H HATIOHAL LEAth~~Y~~OF' OtUO ' Industrial Hygiene No.

    Office of Legacy Management (LM)

    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 Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE-SessionsSouth DakotaRobbins and700, 1. .&. ' , cMarchW W e e l l d d o

  15. OXIDATIVE DISSOLUTION OF BIO-U(IV)O2(S) IN PRESENCE OF NITRATE AND IRON UNDER ANAEROBIC CONDITIONS USING FLOW-THROUGH COLUMNS

    E-Print Network [OSTI]

    Pokharel, Rasesh

    2013-01-01

    UO 2 (s) to aqueous uranyl (UO 22+ ) is well known (Finneranof S. Oneidensis; (d) anaerobic phase uranyl acetate +state it occurs as the uranyl ion (UO 2 ) 2+ , which forms

  16. BROADER National Security Missions

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

    Metal Chips (U) Uranium Trioxide (UO 3 ) UO 2 (NO 3 ) 2 Ur anyl Nitrate Ammonium Uranyl Carbonate (NH 4 ) 2 UO 2 (CO 3 ) 4 DEVELOP NEW NATIONAL SECURITY MISSIONS Y-12 has...

  17. Issues in the use of Weapons-Grade MOX Fuel in VVER-1000 Nuclear Reactors: Comparison of UO2 and MOX Fuels

    SciTech Connect (OSTI)

    Carbajo, J.J.

    2005-05-27

    The purpose of this report is to quantify the differences between mixed oxide (MOX) and low-enriched uranium (LEU) fuels and to assess in reasonable detail the potential impacts of MOX fuel use in VVER-1000 nuclear power plants in Russia. This report is a generic tool to assist in the identification of plant modifications that may be required to accommodate receiving, storing, handling, irradiating, and disposing of MOX fuel in VVER-1000 reactors. The report is based on information from work performed by Russian and U.S. institutions. The report quantifies each issue, and the differences between LEU and MOX fuels are described as accurately as possible, given the current sources of data.

  18. UO Department of Chemistry & Biochemistry -Faculty Research Interests Berglund, Andy -The primary goals of the Berglund lab are to understand the molecular basis of the human disease myotonic

    E-Print Network [OSTI]

    Cina, Jeff

    , physical measurement, and device fabrication to design, build and study new materials and structures that have applications in solar energy harvesting and electrochemical energy storage Cina, Jeffrey A solids that permits them to prepare families of new nanostructured and kinetically stable compounds

  19. Equipment List for UO Geology Field Camp, Summer 2012 Camping Equipment (We will be camping in central Oregon during the first 2-week segment,

    E-Print Network [OSTI]

    Roering, Joshua J.

    weather clothing Sun hat, sunglasses, and light weight fabrics that keep the sun off your skin Sunscreen

  20. MS Based Metabonomics

    SciTech Connect (OSTI)

    Want, Elizabeth J.; Metz, Thomas O.

    2010-03-01

    Metabonomics is the latest and least mature of the systems biology triad, which also includes genomics and proteomics, and has its origins in the early orthomolecular medicine work pioneered by Linus Pauling and Arthur Robinson. It was defined by Nicholson and colleagues in 1999 as the quantitative measurement of perturbations in the metabolite complement of an integrated biological system in response to internal or external stimuli, and is often used today to describe many non-global types of metabolite analyses. Applications of metabonomics are extensive and include toxicology, nutrition, pharmaceutical research and development, physiological monitoring and disease diagnosis. For example, blood samples from millions of neonates are tested routinely by mass spectrometry (MS) as a diagnostic tool for inborn errors of metabolism. The metabonome encompasses a wide range of structurally diverse metabolites; therefore, no single analytical platform will be sufficient. Specialized sample preparation and detection techniques are required, and advances in NMR and MS technologies have led to enhanced metabonome coverage, which in turn demands improved data analysis approaches. The role of MS in metabonomics is still evolving as instrumentation and software becomes more sophisticated and as researchers realize the strengths and limitations of current technology. MS offers a wide dynamic range, high sensitivity, and reproducible, quantitative analysis. These attributes are essential for addressing the challenges of metabonomics, as the range of metabolite concentrations easily exceeds nine orders of magnitude in biofluids, and the diversity of molecular species ranges from simple amino and organic acids to lipids and complex carbohydrates. Additional challenges arise in generating a comprehensive metabolite profile, downstream data processing and analysis, and structural characterization of important metabolites. A typical workflow of MS-based metabonomics is shown in Figure 1. Gas chromatography-(GC)-MS was the most commonly used MS-based method for small molecule analysis in the 1970s and 1980s. It is still used today for the detection of many metabolic disorders and plays a strong role in plant metabonomics. Liquid chromatography (LC)-MS approaches have grown in popularity for metabolite studies, due to simpler sample preparation, reduced analysis times through the introduction of ultra-high performance liquid chromatography (UPLC)-MS and the ability to observe a wider range of metabolites. This chapter will discuss the role of MS in metabonomics, the techniques involved in this exciting area, and the current and future applications of the field. The various bioinformatics tools and multivariate analysis techniques used to maximize information recovery and to aid in the interpretation of the very large data sets typically obtained in metabonomics studies will also be discussed. While there are many different MS-based approaches utilized in metabonomics studies, emphasis will be placed on more established methods.

  1. ICP-MS Workshop

    SciTech Connect (OSTI)

    Carman, April J.; Eiden, Gregory C.

    2014-11-01

    This is a short document that explains the materials that will be transmitted to LLNL and DNN HQ regarding the ICP-MS Workshop held at PNNL June 17-19th. The goal of the information is to pass on to LLNL information regarding the planning and preparations for the Workshop at PNNL in preparation of the SIMS workshop at LLNL.

  2. METLIN: MS/MS metabolite data from the MAGGIE Project

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

    METLIN is a metabolite database for metabolomics containing over 50,000 structures, it also represents a data management system designed to assist in a broad array of metabolite research and metabolite identification by providing public access to its repository of current and comprehensive MS/MS metabolite data. An annotated list of known metabolites and their mass, chemical formula, and structure are available on the METLIN website. Each metabolite is conveniently linked to outside resources such as the the Kyoto Encyclopedia of Genes and Genomes (KEGG) for further reference and inquiry. MS/MS data is also available on many of the metabolites. The list is expanding continuously as more metabolite information is being deposited and discovered. [from http://metlin.scripps.edu/] Metlin is a component of the MAGGIE Project. MAGGIE is funded by the DOE Genomics: GTL and is an acronym for "Molecular Assemblies, Genes, and Genomics Integrated Efficiently."

  3. PROCEEDINGS OF WORKSHOP ON THERMOMECHANICAL-HYDROCHEMICAL MODELING FOR A HARDROCK WASTE REPOSITORY. JULY 29-31, 1980. MARRIOTT INN, BERKELEY, CA

    E-Print Network [OSTI]

    Authors, Various

    2010-01-01

    Experi ments by the BGR in the Asse II", Proc. UoS. /FRG Bi"pp,-- Rothfuchs, T. (1979): "Asse II In-Situ Brine Migrationin the late 1960's in the Asse Salt Mine in the Federal

  4. Uranyl Sequestration: Synthesis and Structural Characterization of Uranyl Complexes with a Tetradentate Methylterephthalamide Ligand

    E-Print Network [OSTI]

    Ni, Chengbao

    2012-01-01

    Me 4 N] 8 [L(UO 2 )] 4 tetramer, formed via coordination ofAddition of KOH to the tetramer gave the corresponding2- forms an unexpected tetramer [L(UO 2 )] 48- , in which

  5. Aalborg Universitet Soshinskaya, Mariya; Graus, Wina; Guerrero, Josep M.; Quintero, Juan Carlos Vasquez

    E-Print Network [OSTI]

    Vasquez, Juan Carlos

    Technology Solutions (CERTS); Integrated Power Supply (IPS); molten carbonate fuel cell (MCFC); phosphoric acid fuel cell (PAFC); Alternating Current (AC); Direct Current (DC); use of system (UoS); research components, dual-mode switching from g

  6. Quick Reference Extension / MS / Location 5/28/2015 37334 MS10 B203Abedi, Reza

    E-Print Network [OSTI]

    Davis, Lloyd M.

    MS08 B107Chellstorp, Diane 37448 MS35 8189/107Chen, Ying Ling 37502 B209Clarke, Philip 37236 MS35 G239Williams, Nehemiah 37401 8184/141Witte, Michael 37529 MS19 E102Yu, Andrew 37362 MS26 E202Yue

  7. Electron Microbeam Investigation of Uranium-Contaminated Soils from

    E-Print Network [OSTI]

    Zhu, Chen

    . Uranium(VI), which typically occurs in the uranyl (UO2 2+) ion or in uranyl complexes, dominates under

  8. Fate of Radionuclides in Wastewater Treatment Plants

    E-Print Network [OSTI]

    Shabani Samgh Abadi, Farzaneh

    2013-01-01

    is preferred over metallic uranium. Reactor fuel is usuallyfuel. Reactor fuel can be prepared both as UO 2 or metallic

  9. Clustering of protein families into functional subtypes using Relative Complexity Measure with reduced

    E-Print Network [OSTI]

    Yanikoglu, Berrin

    @su.sabanciuniv.edu HHO: hotu@bidmc.harvard.edu UOS: ugur@sabanciuniv.edu #12;- 2 - Abstract Background Phylogenetic

  10. Vapour Phase Hydration of Blended Oxide Magnox Waste Glasses Neil C. Hyatt,1*

    E-Print Network [OSTI]

    Sheffield, University of

    level waste (HLW) arising from the reprocessing of spent Oxide (UO2) and Magnox nuclear fuels is blended

  11. 9DSRXU 3KDVH +\\GUDWLRQ RI %OHQGHG 2[LGH 0DJQR[ :DVWH *ODVVHV Neil C. Hyatt,1*

    E-Print Network [OSTI]

    Sheffield, University of

    level waste (HLW) arising from the reprocessing of spent Oxide (UO2) and Magnox nuclear fuels is blended

  12. MODELING THE PERFORMANCE OF HIGH BURNUP THORIA AND URANIA PWR FUEL

    E-Print Network [OSTI]

    Long, Y.

    Fuel performance models have been developed to assess the performance of ThO[subscript 2]-UO[subscript 2]

  13. Evolutionary implications: myoglobin-like proteins found in ancient mic... http://www.eurekalert.org/pub_releases/2000-02/UoH-Eimp-0102100.php 1 of 2 3/5/2008 12:50 PM

    E-Print Network [OSTI]

    Alam, Maqsudul

    in oxygen transport and storage. The newly identified proteins may be the evolutionary ancestors of proteins involved in oxygen sensing as well as transport and storage. The findings, which appear in the Feb. 3 issue vapor, nitrogen, methane and ammonia that made up Earth's atmosphere for food and energy, probably

  14. Topological Analysis of Void Spaces in Tungstate Frameworks: Assessing Storage Properties for the Environmentally Important Guest Molecules and Ions: CO_2, UO_2, PuO_2, U, Pu, Sr^2+, Cs+, CH_4, and H_2

    E-Print Network [OSTI]

    Cole, Jacqueline Manina; Cramer, Alisha J.; Zeidler, Anita

    2015-07-15

    appropriate. In the ongoing search for usable materials, data mining of structure databases can provide a useful tool to identify potential candidates for the applications in hand. For example, a study on Li+ migration maps26 examined the structure... products found in nuclear waste. Waste from nuclear facilities, in the form of spent nuclear fuel, is found predominantly in the form of uranium or plutonium oxides.28 Furthermore, current efforts, especially among tungstates, are largely focused...

  15. LA-5097-MS INFORMAL REPORT

    Office of Legacy Management (LM)

    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 Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE-SessionsSouth DakotaRobbins and MyersHr. Anthony V. Andolina:I 1 ' ,L5097-MS

  16. ARM - Datastreams - irt200ms

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Comments? We would love to hear from you!ch4Datastreamsecmwfsfc1lch2Datastreamsirt Documentation Data00ms

  17. ARM - Instrument - ptr-ms

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Comments?govInstrumentsnoaacrn Documentation NOAACRN : XDCgovInstrumentsptr-ms Documentation ARM Data Discovery

  18. Study of D(0) decays into K overbar (0) and K overbar (*0)

    E-Print Network [OSTI]

    Ammar, Raymond G.; Ball, S.; Baringer, Philip S.; Coppage, Don; Copty, N.; Davis, Robin E. P.

    1993-11-01

    4.6+p 9+1.1% 2.6+0.3+0.7%%uo 1.4'Po 3.9%%uo 2.7% 0.25% 3.1 %%uo K* g 1.7+0.3+0.4% 2. 3+0.7+1.0%%uo & 1.4%%uo(90% C.L.) & 2.6%(90%%uo C.L.) 0.3% 2.5% 0.25%%uo + 2. 0%%uo & 0. 13%(90% C.L.) 0.003% mode. In all cases, results were consistent...+30 80+12 372+45 6.8+0.2% 2.5+0.1% 0.91+0.07%%uo 1.63+0.06%%uo 168+15 0.85+0.03% 54+9 6500+ 171 0.32+0.02%%uo 10.1+0.3% 't is the product of the efficiency to reconstruct this made and the branching ratio of the D daughter to observable particles. Stech...

  19. MS.BIOLOGY.THESIS ACADEMIC LEARNING PLAN

    E-Print Network [OSTI]

    O'Laughlin, Jay

    , application and preservation of knowledge. Within this framework, the primary mission of the Department and animals Adherence to appropriate ethical practices in the thesis research E. Project Management Design.MS.BIOLOGY.THESIS EMBEDDED ASSESSMENT INSTRUMENT FOR DOMAIN(S): INTEGRITY/VALUES, PROJECT MANAGEMENT Program: M.S. Biology

  20. JOURNALDEPHYSIQUEIV ColloqueC7,supplkmentauJournaldePhysique111,Volume3,novembre1993

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ) connected to an image analyzer system, made of a host computer (SUN 3.140) and an Imaging Technology image~alaas'slreqapalou-rod.paquasa~daqITrMs~oqroede3pa-ralurs aqqpuesuTr.Juaa.xBaqq'lap~odayqoqpaqqals7Tnsa-r~e3~801oqd~ourauosA~uo E'C -saps)sq~edpaJaTUrspaqsr~od30saseurr~3suo~'~3a~aK~epuo3as #12;Granulometric and granulomorphic distributions on projected

  1. Biomedical Science MS Project Policy The purpose of this policy is to specify the parameters for the Biomedical Science MS Project. The MS project

    E-Print Network [OSTI]

    Anderson, Paul R.

    Biomedical Science MS Project Policy Purpose: The purpose of this policy is to specify the parameters for the Biomedical Science MS Project. The MS project option is a scholarly project;Biomedical Science MS Project Policy Additional Guidance: Students must submit an Intent to Graduate form

  2. Cleaning up the masses: Exclusion lists to reduce contamination with HPLC-MS/MS

    E-Print Network [OSTI]

    Lamond, Angus I.

    Cleaning up the masses: Exclusion lists to reduce contamination with HPLC-MS/MS Kelly Hodgea,, Sara also increased. Most undesirable contaminants originate in the laboratory and come from either the user peptides from abundant contaminant proteins. While completely eliminating non-specific protein

  3. How to setup MS Outlook 2003 for MS Exchange 2007 July 26, 2010 Page 1 of 8

    E-Print Network [OSTI]

    Zhou, Chongwu

    How to setup MS Outlook 2003 for MS Exchange 2007 July 26, 2010 Page 1 of 8 Viterbi IT User Document 1. This document is intended for users setting up Outlook 2003 for the first time on a Windows PC Office Outlook) #12;How to setup MS Outlook 2003 for MS Exchange 2007 July 26, 2010 Page 2 of 8 2

  4. LA-12968-MS The Unsaturated Hydraulic

    E-Print Network [OSTI]

    LA-12968-MS The Unsaturated Hydraulic Characteristics of the BandelierTuff LosN A T I O N A L L A B technical correctness. #12;The Unsaturated Hydraulic Characteristics of the Bandelier Tuff David B. Rogers........................................................................................................4 Hydraulic Data Presentation

  5. SOIL, WATER, AND CLIMATE MS DEFENSE SEMINAR

    E-Print Network [OSTI]

    Minnesota, University of

    SOIL, WATER, AND CLIMATE MS DEFENSE SEMINAR Case study for Determining the Presence of the Moorsh- Forming Process in Drained Peat (Markey Muck) Soils, Anoka County, Minnesota, USA by Allyz Kramer Polacsek Soil Science Advisor: Jay Bell Friday, May 15, 2009 9:00 ­ 10:00 am S415 Soil Science Building ABSTRACT

  6. College of Arts & Sciences Chemistry, MS

    E-Print Network [OSTI]

    New Mexico, University of

    College of Arts & Sciences Chemistry, MS Broad Learning Goals A. The student will develop a broad understanding of the major areas of chemistry with an understanding and awareness of the professional, ethical-rooted knowledge in their chosen sub-discipline in chemistry. C. The student will be able to report, present and

  7. Molten uranium dioxide structure and dynamics

    SciTech Connect (OSTI)

    Skinner, L. B. [Argonne National Laboratory (ANL), Argonne, IL (United States); Stony Brook Univ., Stony Brook, NY (United States); Materials Development Inc., Arlington Heights, IL (United States); Parise, J. B. [Stony Brook Univ., Stony Brook, NY (United States); Benmore, C. J. [Argonne National Laboratory (ANL), Argonne, IL (United States); Weber, J. K.R. [Materials Development Inc., Arlington Heights, IL (United States); Williamson, M. A. [Argonne National Laboratory (ANL), Argonne, IL (United States); Tamalonis, A. [Materials Development Inc., Arlington Heights, IL (United States); Hebden, A. [Argonne National Laboratory (ANL), Argonne, IL (United States); Wiencek, T. [Argonne National Laboratory (ANL), Argonne, IL (United States); Alderman, O. L.G. [Materials Development Inc., Arlington Heights, IL (United States); Guthrie, M. [Carnegie Inst., Washington, DC (United States); Leibowitz, L. [Argonne National Laboratory (ANL), Argonne, IL (United States)

    2014-11-20

    Uranium dioxide (UO2) is the major nuclear fuel component of fission power reactors. A key concern during severe accidents is the melting and leakage of radioactive UO2 as it corrodes through its zirconium cladding and steel containment. Yet, the very high temperatures (>3140 kelvin) and chemical reactivity of molten UO2 have prevented structural studies. In this work, we combine laser heating, sample levitation, and synchrotron x-rays to obtain pair distribution function measurements of hot solid and molten UO2. The hot solid shows a substantial increase in oxygen disorder around the lambda transition (2670 K) but negligible U-O coordination change. On melting, the average U-O coordination drops from 8 to 6.7 ± 0.5. Molecular dynamics models refined to this structure predict higher U-U mobility than 8-coordinated melts.

  8. Molten uranium dioxide structure and dynamics

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Skinner, L. B. [Argonne National Laboratory (ANL), Argonne, IL (United States); Stony Brook Univ., Stony Brook, NY (United States); Materials Development Inc., Arlington Heights, IL (United States); Parise, J. B. [Stony Brook Univ., Stony Brook, NY (United States); Benmore, C. J. [Argonne National Laboratory (ANL), Argonne, IL (United States); Weber, J. K.R. [Materials Development Inc., Arlington Heights, IL (United States); Williamson, M. A. [Argonne National Laboratory (ANL), Argonne, IL (United States); Tamalonis, A. [Materials Development Inc., Arlington Heights, IL (United States); Hebden, A. [Argonne National Laboratory (ANL), Argonne, IL (United States); Wiencek, T. [Argonne National Laboratory (ANL), Argonne, IL (United States); Alderman, O. L.G. [Materials Development Inc., Arlington Heights, IL (United States); Guthrie, M. [Carnegie Inst., Washington, DC (United States); Leibowitz, L. [Argonne National Laboratory (ANL), Argonne, IL (United States)

    2014-11-20

    Uranium dioxide (UO2) is the major nuclear fuel component of fission power reactors. A key concern during severe accidents is the melting and leakage of radioactive UO2 as it corrodes through its zirconium cladding and steel containment. Yet, the very high temperatures (>3140 kelvin) and chemical reactivity of molten UO2 have prevented structural studies. In this work, we combine laser heating, sample levitation, and synchrotron x-rays to obtain pair distribution function measurements of hot solid and molten UO2. The hot solid shows a substantial increase in oxygen disorder around the lambda transition (2670 K) but negligible U-O coordination change. On melting, the average U-O coordination drops from 8 to 6.7 ± 0.5. Molecular dynamics models refined to this structure predict higher U-U mobility than 8-coordinated melts.

  9. Molten uranium dioxide structure and dynamics

    SciTech Connect (OSTI)

    Skinner, L. B.; Parise, J. B.; Benmore, C. J.; Weber, J. K.R.; Williamson, M. A.; Tamalonis, A.; Hebden, A.; Wiencek, T.; Alderman, O. L.G.; Guthrie, M.; Leibowitz, L.

    2014-11-21

    Uranium dioxide (UO2) is the major nuclear fuel component of fission power reactors. A key concern during severe accidents is the melting and leakage of radioactive UO2 as it corrodes through its zirconium cladding and steel containment. Yet, the very high temperatures (>3140 kelvin) and chemical reactivity of molten UO2 have prevented structural studies. In this work, we combine laser heating, sample levitation, and synchrotron x-rays to obtain pair distribution function measurements of hot solid and molten UO2. The hot solid shows a substantial increase in oxygen disorder around the lambda transition (2670 K) but negligible U-O coordination change. On melting, the average U-O coordination drops from 8 to 6.7 ± 0.5. Molecular dynamics models refined to this structure predict higher U-U mobility than 8-coordinated melts.

  10. Molten uranium dioxide structure and dynamics

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Skinner, L. B.; Parise, J. B.; Benmore, C. J.; Weber, J. K.R.; Williamson, M. A.; Tamalonis, A.; Hebden, A.; Wiencek, T.; Alderman, O. L.G.; Guthrie, M.; et al

    2014-11-21

    Uranium dioxide (UO2) is the major nuclear fuel component of fission power reactors. A key concern during severe accidents is the melting and leakage of radioactive UO2 as it corrodes through its zirconium cladding and steel containment. Yet, the very high temperatures (>3140 kelvin) and chemical reactivity of molten UO2 have prevented structural studies. In this work, we combine laser heating, sample levitation, and synchrotron x-rays to obtain pair distribution function measurements of hot solid and molten UO2. The hot solid shows a substantial increase in oxygen disorder around the lambda transition (2670 K) but negligible U-O coordination change. Onmore »melting, the average U-O coordination drops from 8 to 6.7 ± 0.5. Molecular dynamics models refined to this structure predict higher U-U mobility than 8-coordinated melts.« less

  11. High Field Magnetization measurements of uranium dioxide single crystals (P08358- E003-PF)

    SciTech Connect (OSTI)

    Gofryk, K. [Idaho National Lab. (INL), Idaho Falls, ID (United States); Harrison, N. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States). National High Magnetic Field Lab. (MagLab); Jaime, M. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States). National High Magnetic Field Lab. (MagLab)

    2014-12-01

    Our preliminary high field magnetic measurements of UO2 are consistent with a complex nature of the magnetic ordering in this material, compatible with the previously proposed non-collinear 3-k magnetic structure. Further extensive magnetic studies on well-oriented (<100 > and <111>) UO2 crystals are planned to address the puzzling behavior of UO2 in both antiferromagnetic and paramagnetic states at high fields.

  12. Rational Ligand Design for U(VI) and Pu(IV)

    E-Print Network [OSTI]

    Szigethy, Geza

    2010-01-01

    Design for the Uranyl Cation, UO 22+ ………………………. ……………….15tripodal ligands for uranyl chelation …………………….19 Figurestudies with the uranyl cation ………………………………………………. 36 Figure

  13. 4th Annual DOE-ERSP PI Meeting: Abstracts

    E-Print Network [OSTI]

    Hazen, Terry C.

    2009-01-01

    New microelectrodes measuring uranyl concentration ([UO 22suggests Ca-tricarbonato-uranyl complexes predominate underfield conditions, while calculated uranyl ion activities are

  14. On the acceleration potential in perfect fluid flow 

    E-Print Network [OSTI]

    Maestri, Raymond Rudolph

    1960-01-01

    number space. COMMENT: This theorem is tacitly understood. in this and similar discourses. It needs explicit formulation for the purposes of the following arguments. THEOREM ): If '7X U 0) V P 6. (0 U 3 )& then PROOF: ~8) Ug Uo ~P . V R 2 2 E... LEMMA 2& If $(3) ~ 0 as ( R Bp (Rp& Kp) then P ~ -; gR E' Kp 19 This lemma follows from the definition of p and from (12). 0 The conjoint of lemma 1, lemma 2, and theorem 2 states; (() - Uo ) )& Uo . VR c 0- 2 U~ Uo ? 2 ~P ) $ pP $b R Q. E. D...

  15. 4th Annual DOE-ERSP PI Meeting: Abstracts

    E-Print Network [OSTI]

    Hazen, Terry C.

    2009-01-01

    to adhere to hematite and goethite. Two adhesion-deficientUO 2 by ferrihydrite, goethite, and hematite-coated quartzof batch experiments with goethite as the electron acceptor,

  16. HIGH CURRENT D- PRODUCTION BY CHARGE EXCHANGE IN SODIUM

    E-Print Network [OSTI]

    Hooper, E.B.

    2011-01-01

    good beam optics at the 1 keV energy and below required forto relatively high energies. optics is goou. Uo)~ but the

  17. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    2015, American Physical Society Emergent Properties of the Bose-Einstein-Hubbard Condensate in UO2(+x) Conradson, Steven D. ; Durakiewicz, Tomasz Full Text Available April 2013...

  18. ELECTRON-SPIN-RESONANCE STUDIES ON PHOTO-SYNTHETIC MATERIALS

    E-Print Network [OSTI]

    Sogo, Power B.; Carter, Louise A.; Calvin, Melvin.

    2008-01-01

    for the Uo So Atomic Energy Commission UCRL-9153 ELECTRON-in part by the U. S. Atomic Energy Commission and in part by

  19. Transition projects FY 1995 multi-year program plan/fiscal year work plan WBS 1.3.1. and 7.1

    SciTech Connect (OSTI)

    Cartmell, D.B.

    1994-09-01

    This document presents a complete listing and time line of transitional projects associated with the Purex/UO3 deactivation project at the Hanford reservation.

  20. Designing a Digital Version of British Library, Harley MS 4431 

    E-Print Network [OSTI]

    Laidlaw, James; Mansfield, Charlie

    2005-05-12

    Discusses design for the electronic transcription of MS BL Harley 4431 aims first of all to create a diplomatic corpus made up of the thirty works which Christine de Pizan included in the Queen’s MS. The generally accepted ...

  1. Montana State University 1 MS in Civil Engineering

    E-Print Network [OSTI]

    Maxwell, Bruce D.

    Montana State University 1 MS in Civil Engineering Students may pursue the M.S. degree in any of the Civil Engineering Department programs under either Plan A or Plan B. Plan A (thesis

  2. Introduction Multiple sclerosis (MS) is an inflammatory disease of the

    E-Print Network [OSTI]

    Strominger, Jack L.

    Introduction Multiple sclerosis (MS) is an inflammatory disease of the CNS affecting 0 the frequency of relapses by 30% in relapsing-remitting multiple sclerosis (MS) patients. In the present study

  3. LA-8318-MS Informal Report I

    Office of Scientific and Technical Information (OSTI)

    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 Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield MunicipalTechnical Report:Speeding accessby aLED Street LightingFrom theHighI _s - s i s i i i8318-MS

  4. To: Ms. Dorothy Riehle, FOIA Officer,

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust,Field-effectWorking With U.S.Week DayDr.Theories81 to 1990Be PreseRted atTo: Ms. Dorothy

  5. Lay Member of Council Ms Debbie Green Ms Debbie Green is Chief Executive of Coastal Housing Group a social housing

    E-Print Network [OSTI]

    Martin, Ralph R.

    Lay Member of Council ­ Ms Debbie Green Ms Debbie Green is Chief Executive of Coastal Housing Group a social housing provider in Swansea, Neath Port Talbot and Bridgend. With a turnover of over £25m which formed Coastal Housing Group in 2008. Before commencing her career in housing Ms Green worked

  6. Source term evaluation for UF{sub 6} release event in feed facility at gaseous diffusion plants

    SciTech Connect (OSTI)

    Kim, S.H.; Taleyarkhan, R.P.

    1997-01-30

    An assessment of UF{sub 6} release accidents was conducted for the feed facility of a gaseous diffusion plant (GDP). Release rates from pig-tail connections were estimated from CYLIND code predictions, whereas, MELCOR was utilized for simulating reactions of UF{sub 6} with moisture and consequent transport of UO{sub 2}F{sub 2} aerosols and HF vapor through the building and to the environment. Two wind speeds were utilized. At the high end (Case 1) a wind speed of {approximately} 1 m/s (200 fpm) was assumed to flow parallel to the building length. At the low end (Case 2) to represent stagnant conditions a corresponding wind speed of 1 cm/s (2 fpm) was utilized. A further conservative assumption was made to specify no closure of crane and train doors at either end of the building. Relaxation of this assumption should provide for additional margins. Results indicated that, for the high (200 fpm) wind speed, close to 66% of the UO{sub 2}F{sub 2} aerosols and 100% of the HF gas get released to the environment over a 10-minute period. However, for the low (2 fpm) wind speed, negligible amount ({approximately} 1% UO{sub 2}F{sub 2}) of aerosols get released even over a 2 hour period.

  7. MS GRADUATE DEGREE REQUIREMENTS DEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING

    E-Print Network [OSTI]

    MS GRADUATE DEGREE REQUIREMENTS DEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING The Department of Electrical and Computer Engineering (ECE) offers the degree of MS in Electrical and Computer Engineering (ECE 899 courses may not be used as part of this requirement) from Engineering (including ECE), Math

  8. PhD Chemical Engineering MS Chemical Engineering

    E-Print Network [OSTI]

    Collins, Gary S.

    1 PhD Chemical Engineering MS Chemical Engineering Bylaws Gene and Linda Voiland School of Chemical Engineering and Bioengineering College of Engineering and Architecture Approved by Voiland School facultyD Chemical Engineering, MS Chemical Engineering B. Discipline: Edgar, et al.1 provide a succinct description

  9. MS211 -CALCULO NUMERICO -1o semestre de 2008

    E-Print Network [OSTI]

    Gomes Ruggiero, Márcia A.

    MS211 - C´ALCULO NUM´ERICO - 1o semestre de 2008 (http://www.ime.unicamp.br/ms211) turma professor¸c~ao: o suporte computacional b´asico da disciplina ser´a o MatLab. BIBLIOGRAFIA · "C´alculo Num

  10. UNM Department of Geography M.S. Program Assessment Plan

    E-Print Network [OSTI]

    New Mexico, University of

    UNM Department of Geography ­ M.S. Program Assessment Plan Page 1 of 8 8/18/2010 Department of Geography Master of Science in Geography Plan for Assessment of Student Learning Outcomes The University: Department of Geography 3. Date: May 10, 2008 B. Academic Program of Study M.S. Geography C. Contact Person

  11. James Banfield1 Srikanth Allu2

    E-Print Network [OSTI]

    Mihaila, Bogdan

    Performance code [1] for uranium-dioxide (UO2) fuel in a heavy boiling-water reactor and is an extension reactor, which is a Heavy-Boiling Water Reactor (HBWR) with UO2 fuel. There are three rods presented to fixed temperature of 513 K, which is the saturation temperature of the heavy water in the Halden reactor

  12. Forest fires, explosions, and random trees Edward Crane

    E-Print Network [OSTI]

    Wirosoetisno, Djoko

    Forest fires, explosions, and random trees Edward Crane HIMR, UoB 13th January 2014 #12 and James Martin at the University of Oxford. Edward Crane (HIMR, UoB) Forest fires, explosions, and random trees 13th January 2014 2 / 20 #12;Overview This talk is about the mean field forest fire model

  13. Cloud K-SVD: Computing data-adaptive representations in the cloud

    E-Print Network [OSTI]

    Bajwa, Waheed U.

    Cloud K-SVD: Computing data-adaptive representations in the cloud Haroon Raja and Waheed U. Bajwa Department of Electrical and Computer Engineering, Rutgers University, Piscataway, NJ 08854 Emails: haroon a distributed algorithm, termed as cloud K-SVD, for learning a UoS structure underlying distributed data

  14. On the possibility of using uranium-beryllium oxide fuel in a VVER reactor

    SciTech Connect (OSTI)

    Kovalishin, A. A.; Prosyolkov, V. N.; Sidorenko, V. D.; Stogov, Yu. V.

    2014-12-15

    The possibility of using UO{sub 2}-BeO fuel in a VVER reactor is considered with allowance for the thermophysical properties of this fuel. Neutron characteristics of VVER fuel assemblies with UO{sub 2}-BeO fuel pellets are estimated.

  15. Magnetization measurements of uranium dioxide single crystals (P08358-E002-PF)

    SciTech Connect (OSTI)

    Gofryk, K. [Idaho National Lab. (INL), Idaho Falls, ID (United States); Zapf, V. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States). National High Magnetic Field Lab. (MagLab); Jaime, M. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States). National High Magnetic Field Lab. (MagLab)

    2014-12-01

    Our preliminary magnetic susceptibility measurements of UO2 point to complex nature of the magnetic ordering in this material, consistent with the proposed non-collinear 3-k magnetic structure. Further extensive magnetic studies are planned to address the puzzling behavior of UO2 in both antiferromagnetic and paramagnetic states.

  16. Investigation of the metabolism of Substance-P at the blood-brain barrier using LC-MS/MS

    E-Print Network [OSTI]

    Chappa, Arvind K.; Cooper, Joshua D.; Audus, Kenneth L.; Lunte, Susan M.

    2007-01-01

    , the metabolism of SP was investigated using an in vitro model of the BBB and LC-MS/MS. Substance P metabolism was found to be non-saturable in the concentration range of 100 nM to 10 ?M, with approximately 70% of the peptide remaining intact after 5 hrs...

  17. Geology of the Pontotoc North-Northwest area San Saba County, Texas 

    E-Print Network [OSTI]

    Chauvin, Aaron Lawrence

    1962-01-01

    T wg ttt ua&4 86uTps? 'KB?&? 3'o 8??? uv. Bqttesesdez (we leod 'g ?yd) deut vy6oyoa6 e~ uo ByoqmKB cl'f p pttQ e8'f ?$8 e~ go tlQL 8 ~ 8+%? ~8 e~ go Bd'$ p puc' se~ g@ct u fe+clo og pgagg etlg wf 'Pasn 89th Bs'QdUIOD uo+crKlgg SedoosoiMGQB 3'lcpg...' 0;foo'r wcuogn fd Tg Bugs ZSAggg t79$trSdg pwr{xoH EgsnofhszQ G . o 8 xodsz snld ssgci" I 8 ssot~ . 8&Rs+ ~6zng sggygnpsgg xnou Mlop uo'fQ'HTQGQxs trs go~ p3+u~oug rrrogj ssgd tlp28 p:3xgni30'2 Gtg dr~ ox' uo 3$7rgtj s~gggss uQNxQQ go dnaz6 uo...

  18. Alignment of LC-MS Data Using Peptide Features 

    E-Print Network [OSTI]

    Tang, Xincheng

    2012-02-14

    Desorption Ionization MS Mass Spectrometry MS/MS Tandem Mass Spectrometry M/Z Mass-To-Charge Ratio PNNL Paci c Northwest National Laboratory RT Retention Time SELDI Surface Enhanced Laser Desorption Ionization TOF Time-Of-Flight vi TABLE OF CONTENTS... the raw spectrum data and the information of the detected peak features for peptide alignment. In this paper, two Shewanella datasets are obtained from Paci c Northwest Na- tional Laboratory (PNNL) and they were analyzed by SEQUEST on di erent days...

  19. Some effects of data base variations on numerical simulations of uranium migration

    SciTech Connect (OSTI)

    Carnahan, C.L.

    1987-12-01

    Numerical simulations of migration of chemicals in the geosphere depend on knowledge of identities of chemical species and on values of chemical equilibrium constants supplied to the simulators. In this work, some effects of variability in assumed speciation and in equilibrium constants were examined, using migration of uranium as an example. Various simulations were done of uranium migration in systems with varying oxidation potential, pH, and mator component content. A simulation including formation of aqueous species UO/sub 2//sup 2 +/, UO/sub 2/CO/sub 3//sup 0/, UO/sub 2/(CO/sub 3/)/sub 2//sup 2 -/, UO/sub 2/(CO/sub 3/)/sub 3//sup 4 -/, (UO/sub 2/)/sub 2/CO/sub 3/(OH)/sub 3//sup -/, UO/sub 2//sup +/, U(OH)/sub 4//sup 0/, and U(OH)/sub 5//sup -/ is compared to simulation excluding formation of UO/sub 2//sup +/ and U(OH)/sub 5//sup -/. These simulations relied on older data bases, and they are compared to a further simulation using recently published data on formation of U(OH)/sub 4//sup 0/, (UO/sub 2/)/sub 2/CO/sub 3/(OH)/sub 3//sup -/, UO/sub 2/(CO/sub 3/)/sub 5//sup 5 -/, and U(CO/sub 3/)/sub 5//sup 6 -/. Significant differences in dissolved uranium concentrations are noted among the simulations. Differences are noted also in precipitation of two solids, USiO/sub 4/(c) (coffinite) and CaUO/sub 4/(c) (calcium uranate), although the solubility products of the solids were not varied in the simulations. 18 refs., 9 figs., 2 tabs.

  20. Ms. Vicki Cowart Secretary of the Board of Trustees

    E-Print Network [OSTI]

    as a geophysicist for several oil and gas companies and was a District Manager for Schlumberger Well Services. Ms. She currently serves as Secretary of the Board of Trustees and Chair of the Finance & Audit Committee

  1. UCF Computer Science MS Program of Study (POS) Nonthesis Option

    E-Print Network [OSTI]

    Stanley, Kenneth O.

    UCF Computer Science MS Program of Study (POS) Nonthesis Option Required Core Courses (6 Credit Abbreviations * a definition of each type of transfer work can be found in: Clear POS Print POS Save POS

  2. Inside this issue MS 194 and Bishop Barlow's grudge

    E-Print Network [OSTI]

    Capdeboscq, Yves

    Refurbishment of medieval manuscripts for Henry VII: Part two, Queen's College MS 303 Jane Eagan Issue 2 Jane Eagan, our head conservator, has written the second in her series on the refurbishment of our

  3. Molly Carnes, MD, MS Professor, Depts of Medicine,

    E-Print Network [OSTI]

    Sheridan, Jennifer

    Molly Carnes, MD, MS Professor, Depts of Medicine, Psychiatry, and Industrial & Systems Engineering University of Wisconsin-Madison Careers in Academic Medicine:Careers in Academic Medicine: Evaluation at

  4. Expectation Engineering & Technology Management MBA MS in Engineering Learning

    E-Print Network [OSTI]

    Selmic, Sandra

    Expectation Engineering & Technology Management MBA MS in Engineering Learning Opportunities Enhances technical and business management skills Enhanced://coes.latech.edu/assets/Engineering- Management-Degree-Curriculum- 11_29_12.pdf 30 hours (no concentration) 36 hours

  5. MS211 -CALCULO NUMERICO -2o semestre de 2007

    E-Print Network [OSTI]

    Sussner, Peter

    MS211 - C´ALCULO NUM´ERICO - 2o semestre de 2007 (http://www.ime.unicamp.br/ms211) Turma Professor. Erros, aritm´etica de ponto flutuante. 2. Revis~ao de alguns conceitos do C´alculo. 3. Zeros reais de suporte computacional da disciplina ser´a o MatLab. BIBLIOGRAFIA · "C´alculo Num´erico - Aspectos Te

  6. CEE MS and MEng Non-Thesis Project Graduate Student Rubric Student Name: _______________________________ printed and signed

    E-Print Network [OSTI]

    CEE MS and CEE MS and MEng Non-Thesis Project Graduate Student Rubric Student Name: ________________________________ Exam: circle one: MS Non-Thesis Final Project / MEng Non-Thesis Final Project Faculty Adviser: Please

  7. Sir Robert Hart Collection (MS15) Sir Robert Hart, (1835-1911), 1

    E-Print Network [OSTI]

    Paxton, Anthony T.

    relating to the Boxer disturbances MS 15/5 Periodicals, pamphlets, books and maps MS 15/6 Photographs........................................................ 38 5. MS. 15/5 PERIODICALS, PAMPHLETS, BOOKS AND MAPS

  8. Assessment of MeMS Sensors in an Urban Traffic Environment

    E-Print Network [OSTI]

    Varaiya, Pravin

    2004-01-01

    BERKELEY Assessment of MeMS Sensors in an Urban Traf?cAND HIGHWAYS Assessment of MeMS Sensors in an Urban Traffic

  9. MS17AM LEAK CHECKER The MS17AM is a manual valve version of the MS17AB. Since it is a manual unit, some care must be

    E-Print Network [OSTI]

    Massey, Thomas N.

    MS17AM LEAK CHECKER The MS17AM is a manual valve version of the MS17AB. Since it is a manual unit, some care must be exercised in the sequencing of the valves. The most important things to remember are that during normal leak testing: 1. The THROTTLE VALVE is NEVER opened unless the ROUGH VALVE has been

  10. Evolution versus Temporal Difference Learning for Learning to Play Ms. Pac-Man

    E-Print Network [OSTI]

    Lucas, Simon M.

    of a system to learn to play Ms. Pac-Man. For this study Ms. Pac-Man provides a game of appropriate complexityEvolution versus Temporal Difference Learning for Learning to Play Ms. Pac-Man Peter Burrow-layer perceptrons. I. INTRODUCTION Ms. Pac-Man is a classic computer game which has the advantage of being complex

  11. When worlds collide - Mac to MS-DOS. [Data transfer to and from Apple Macintosh computers and MS-DOS based personal computers

    SciTech Connect (OSTI)

    Busbey, A.B.

    1989-04-01

    A number of methods and products, both hardware and software, to allow data exchange between Apple Macintosh computers and MS-DOS based systems. These included serial null modem connections, MS-DOS hardware and/or software emulation, MS-DOS disk-reading hardware and networking.

  12. This form is for use by MS students applying for a 2nd MS, Engineer or PhD degrees or for Engineer

    E-Print Network [OSTI]

    Prinz, Friedrich B.

    This form is for use by MS students applying for a 2nd MS, Engineer or PhD degrees or for Engineer degree students applying for PhD. The form should be completed and returned to the CEE department office degree goal: ( ) 2nd MS ( ) Engineer ( ) PhD Field of study

  13. A theoretical investigation of particle motion occurring in a two-phase curvilinear flow 

    E-Print Network [OSTI]

    Redler, Kenneth Oliver

    1962-01-01

    Xl + 3 +o ?]. ?2 3 ~0+1 2Uow ?1?2 9@o? Kl + 2Uo ?2) + (9990~?lr + 3 Uow ?1?2r 3 Uod?lr - 12Uo Xl?2 + 9 Uow Kjr + 33Io? Kl?2r + ?Vow ?2r 6U w ?2r + 2V w ?2r + 3U w X12r + 3U w Kl?2r + V2?V2r+f + ( U ?V&r+~ V? ?1Kp- SUow Klr - 16Uow Kl?2r w 9 Uow... Xlr + @Vow ?1K2r + 2U w ?2r- 6Va~F + Vow+2r + 3Vo? Xlr + M2o~ Xl?2r + I, Vow ~2rp u + ( U w ?11 + W3 w Kl?2r - SVoool'r - 1SUow Xl?2r +99? Klr + Kl?2r + 6Uo? ?2r - 9Uo? 4 + 2? ?2r + )33Vo? ?l2r + 6Uow ?1?2r +3Uo?X2r~+ + QVor Klr + 3 Uo?X1X2r" gUo...

  14. Bacteriophage ms2 l protein: genetic and biochemical characterization 

    E-Print Network [OSTI]

    McIntosh, Brenley Kathleen

    2009-05-15

    to release the progeny phages into the environment. MS2, the prototypic Levivirus, completes its entire lifecycle in about an hour, generating five hundred to one thousand plaque-forming units (p.f.u.) per cell (Paranchych et al., 1970; van Duin...

  15. MS Thesis Defense A Combined Discrete-dislocation/Scale-

    E-Print Network [OSTI]

    Grujicic, Mica

    MS Thesis Defense A Combined Discrete-dislocation/Scale- dependent Crystal Plasticity Analysis of Deformation and Fracture in Nanomaterials A Combined Discrete-dislocation/Scale- dependent Crystal Plasticity der Giessen, Needleman 1995) Crystal Plasticity Model Results and ComparisonII. Micro-beam Bending

  16. UCF Computer Science MS Program of Study (POS) Thesis Option

    E-Print Network [OSTI]

    Stanley, Kenneth O.

    UCF Computer Science MS Program of Study (POS) Thesis Option Required Core Courses (6 Credit Hours Course Work Subtotal: Subtotal: Thesis Requirement (6 Credit Hours Required) Course Semester / Year (POS) Thesis Option Catalog Year 2012-2013 2 Thesis Committee Position Co-Chair? Typed Name Chair

  17. SPE-163690-MS Synthetic, Geomechanical Logs for Marcellus Shale

    E-Print Network [OSTI]

    Mohaghegh, Shahab

    SPE-163690-MS Synthetic, Geomechanical Logs for Marcellus Shale M. O. Eshkalak, SPE, S. D of hydrocarbons from the reservoirs, notably shale, is attributed to realizing the key fundamentals of reservoir and mineralogy is crucial in order to identify the "right" pay-zone intervals for shale gas production. Also

  18. SPE 173405-MS Assisted History Matching Using Pattern Recognition Technology

    E-Print Network [OSTI]

    Mohaghegh, Shahab

    SPE 173405-MS Assisted History Matching Using Pattern Recognition Technology Alireza Shahkarami of SPE copyright. Abstract This study aims to examine the application of pattern recognition technologies to improve the time and efforts required for completing a successful history matching project. The pattern

  19. Montana State University 1 M.S. in Mathematics -

    E-Print Network [OSTI]

    Maxwell, Bruce D.

    Montana State University 1 M.S. in Mathematics - Mathematics Education Option (MSMME) The MSMME program emphasizes the teaching and learning of high school mathematics. The program offers a blend of courses addressing key topics in mathematics content and pedagogy. The MSMME curriculum

  20. Montana State University 1 M.S. in Mathematics

    E-Print Network [OSTI]

    Maxwell, Bruce D.

    Montana State University 1 M.S. in Mathematics Requirements The Master of Science degrees Plan B is a comprehensive master's degree in either mathematics or statistics. Although no thesis is required in this plan, a sound knowledge of several areas of mathematics and/or statistics is expected

  1. Utilisation de MSUtilisation de MS OUTLOOK 2003OUTLOOK 2003

    E-Print Network [OSTI]

    Vellend, Mark

    Utilisation de MSUtilisation de MS OUTLOOK 2003OUTLOOK 2003 GGéérer ses courriels adrer sesQuoi de neuf dans Microsoft Outlook 2003Microsoft Outlook 2003 Panneau de support et dPanneau de supportQuoi de neuf dans Microsoft Outlook 2003Microsoft Outlook 2003 Par dPar dééfaut, le panneau de

  2. M MS 93-0047 Long-term Assessment

    E-Print Network [OSTI]

    Miller, Scott

    OCS Study M MS 93-0047 Long-term Assessment of the Oil Spill at Bahia Las Minas, Panama Synthesis-term Assessment of the Oil Spill at Bahia Las Minas, Synthesis Report Panama Volume I: Executive Summary Editors. Jackson, eds. 1993. Long-term assessment of the oil spill at Bahia Las Minas, Panama, synthesis report

  3. Montana State University 1 M.S. in Physics

    E-Print Network [OSTI]

    Maxwell, Bruce D.

    Montana State University 1 M.S. in Physics The Department of Physics grants the Master Theory I 3 PHSX 566 Mathematical Physics I 3 Electives (see electives) 6 Thesis PHSX 590 Master's Thesis and Electromagnetic Theory II 6 PHSX 566 Mathematical Physics I 3 Electives (see electives) 10 Thesis None Required

  4. Montana State University 1 M.S. in Land Rehabilitation

    E-Print Network [OSTI]

    Maxwell, Bruce D.

    Montana State University 1 M.S. in Land Rehabilitation Course work in land rehabilitation is designed to serve students new to the rehabilitation field, as well as to experienced individuals or those already working in land rehabilitation or restoration ecology and who desire further education

  5. Revised Fall 2015 MS Chemical Engineering Advising Form

    E-Print Network [OSTI]

    Revised Fall 2015 MS Chemical Engineering Advising Form Last Name: First Name: Student ID#: First with the courses you plan to take in the upcoming semester. Chemical Engineering Core Courses Course# Prerequisite Chemical Engineering Thermodynamics 3 ChE 218 ChE 151, ChE158 Math 133A Reaction Kinetics 3 ChE 219 Mat

  6. Montana State University 1 M.S. in Statistics

    E-Print Network [OSTI]

    Maxwell, Bruce D.

    Montana State University 1 M.S. in Statistics Program Guidelines The Master of Science degree in statistics at Montana State University gives students a solid background in the applications as well as the theory of statistics. Students in this program prepare either for further graduate work

  7. SPE-169507-MS Artificial Intelligence (AI) Assisted History Matching

    E-Print Network [OSTI]

    Mohaghegh, Shahab

    SPE-169507-MS Artificial Intelligence (AI) Assisted History Matching Alireza Shahkarami, Shahab D a successful history matching project. The pattern recognition capabilities of Artificial Intelligence and Data the history matching process. SRM is an intelligent prototype of the full-field reservoir simulation model

  8. GRADUATE HANDBOOK M.S. and PhD Programs

    E-Print Network [OSTI]

    GRADUATE HANDBOOK M.S. and PhD Programs in Mechanical Engineering and Engineering Mechanics another MSU program 8 2.3 Admission Requirements: Ph.D. Programs.................................................. 9 2.3.1 Regular Status. 9 2.3.2 Accelerated Ph.D. Program Entry 9 2.3.3 Provisional Status. 10 2

  9. MS in Water, Society, and Policy University of Arizona

    E-Print Network [OSTI]

    Fay, Noah

    MS in Water, Society, and Policy University of Arizona Biological Sciences East, Room 325 Phone of scholarship. The Water, Society and Policy Program draws on the expertise of scientists, social scientists and the Environment School of Geography and Development Water Resources Research Center Institute

  10. Molly Carnes, MD, MS Professor, Depts of Medicine,

    E-Print Network [OSTI]

    Sheridan, Jennifer

    Molly Carnes, MD, MS Professor, Depts of Medicine, Psychiatry, and Industrial & Systems Engineering University of Wisconsin-Madison Careers in Academic Medicine: Evaluation at Gatekeeping Junctures #12;AAMC (N=0) 0 Dept Medicine Chairs at top 25: #12;What about geriatrics? Year med school graduation 1980

  11. A Mathematical Model for Interplanetary Logistics Ms. Christine Taylor

    E-Print Network [OSTI]

    de Weck, Olivier L.

    A Mathematical Model for Interplanetary Logistics Ms. Christine Taylor Research Assistant. A primary question for space exploration mission design is how to best design the logistics re- quired to sustain the exploration initiative. Using terrestrial logistics modeling tools that have been extended

  12. MS.BIOLOGY.NON-THESIS ACADEMIC LEARNING PLAN

    E-Print Network [OSTI]

    O'Laughlin, Jay

    , transmission, application and preservation of knowledge. Within this framework, the primary mission to appropriate ethical practices in professional activities Project Management Design and execute a project.BIOLOGY.NON-THESIS EMBEDDED ASSESSMENT INSTRUMENT FOR DOMAIN(S): INTEGRITY/VALUES, PROJECT MANAGEMENT Program: M.S. Biology

  13. M.S. IN BIOENGINEERING WORKSHEET Name: __________________________________ Z#:__________________ Advisor: ____________________________

    E-Print Network [OSTI]

    Fernandez, Eduardo

    10/28/2014 M.S. IN BIOENGINEERING WORKSHEET Name: __________________________________ Z to Bioengineering BME 5742 Biosystems Modeling and Control BME 6762 BioInformatics: Bioengineering Perspectives BSC credits from Group A below) Group A: Engineering, Computer Science and Bioengineering Electives Computer

  14. Reaction of uranium oxides with chlorine and carbon or carbon monoxide to prepare uranium chlorides

    SciTech Connect (OSTI)

    Haas, P.A.; Lee, D.D.; Mailen, J.C.

    1991-11-01

    The preferred preparation concept of uranium metal for feed to an AVLIS uranium enrichment process requires preparation of uranium tetrachloride (UCI{sub 4}) by reacting uranium oxides (UO{sub 2}/UO{sub 3}) and chlorine (Cl{sub 2}) in a molten chloride salt medium. UO{sub 2} is a very stable metal oxide; thus, the chemical conversion requires both a chlorinating agent and a reducing agent that gives an oxide product which is much more stable than the corresponding chloride. Experimental studies in a quartz reactor of 4-cm ID have demonstrated the practically of some chemical flow sheets. Experimentation has illustrated a sequence of results concerning the chemical flow sheets. Tests with a graphite block at 850{degrees}C demonstrated rapid reactions of Cl{sub 2} and evolution of carbon dioxide (CO{sub 2}) as a product. Use of carbon monoxide (CO) as the reducing agent also gave rapid reactions of Cl{sub 2} and formation of CO{sub 2} at lower temperatures, but the reduction reactions were slower than the chlorinations. Carbon powder in the molten salt melt gave higher rates of reduction and better steady state utilization of Cl{sub 2}. Addition of UO{sub 2} feed while chlorination was in progress greatly improved the operation by avoiding the plugging effects from high UO{sub 2} concentrations and the poor Cl{sub 2} utilizations from low UO{sub 2} concentrations. An UO{sub 3} feed gave undesirable effects while a feed of UO{sub 2}-C spheres was excellent. The UO{sub 2}-C spheres also gave good rates of reaction as a fixed bed without any molten chloride salt. Results with a larger reactor and a bottom condenser for volatilized uranium show collection of condensed uranium chlorides as a loose powder and chlorine utilizations of 95--98% at high feed rates. 14 refs., 7 figs., 14 tabs.

  15. Development of dual phase magnesia-zirconia ceramics for light water reactor inert matrix fuel 

    E-Print Network [OSTI]

    Medvedev, Pavel

    2005-02-17

    at al., 1970) MgO chemically polished (Evans at al., 1970) UO2 as machined (Evans and Davidge,1969) UO2 chemically polished (Evans and Davidge, 1969) 25 l f E kTSR ? ?= 2.2.6 Fracture strength Results of three-point bend tests for MgO [44] and UO2... stress. The thermal shock resistance is the best for materials that have high fracture strength (? f), high thermal conductivity (k), but low elastic modulus (E) and low coefficient of thermal expansion (? l). One way to quantify thermal shock...

  16. Electrolytic process for preparing uranium metal

    DOE Patents [OSTI]

    Haas, Paul A. (Knoxville, TN)

    1990-01-01

    An electrolytic process for making uranium from uranium oxide using Cl.sub.2 anode product from an electrolytic cell to react with UO.sub.2 to form uranium chlorides. The chlorides are used in low concentrations in a melt comprising fluorides and chlorides of potassium, sodium and barium in the electrolytic cell. The electrolysis produces Cl.sub.2 at the anode that reacts with UO.sub.2 in the feed reactor to form soluble UCl.sub.4, available for a continuous process in the electrolytic cell, rather than having insoluble UO.sub.2 fouling the cell.

  17. Method for factor analysis of GC/MS data

    DOE Patents [OSTI]

    Van Benthem, Mark H; Kotula, Paul G; Keenan, Michael R

    2012-09-11

    The method of the present invention provides a fast, robust, and automated multivariate statistical analysis of gas chromatography/mass spectroscopy (GC/MS) data sets. The method can involve systematic elimination of undesired, saturated peak masses to yield data that follow a linear, additive model. The cleaned data can then be subjected to a combination of PCA and orthogonal factor rotation followed by refinement with MCR-ALS to yield highly interpretable results.

  18. Municipal Energy Agency of MS | 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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History ViewMayo, Maryland: EnergyInformationOliver, Pennsylvania:(CTIMultitradeMunhall,MS Jump to:

  19. ARM - Campaign Instrument - pyran-eko-ms-801

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail.TheoryTuesday,airgovInstrumentsnfovgovInstrumentsprecipisobudapesteko-ms-801

  20. Two-locus linkage analysis in multiple sclerosis (MS)

    SciTech Connect (OSTI)

    Tienari, P.J. (National Public Health Institute, Helsinki (Finland) Univ. of Helsinki (Finland)); Terwilliger, J.D.; Ott, J. (Columbia Univ., New York (United States)); Palo, J. (Univ. of Helsinki (Finland)); Peltonen, L. (National Public Health Institute, Helsinki (Finland))

    1994-01-15

    One of the major challenges in genetic linkage analyses is the study of complex diseases. The authors demonstrate here the use of two-locus linkage analysis in multiple sclerosis (MS), a multifactorial disease with a complex mode of inheritance. In a set of Finnish multiplex families, they have previously found evidence for linkage between MS susceptibility and two independent loci, the myelin basic protein gene (MBP) on chromosome 18 and the HLA complex on chromosome 6. This set of families provides a unique opportunity to perform linkage analysis conditional on two loci contributing to the disease. In the two-trait-locus/two-marker-locus analysis, the presence of another disease locus is parametrized and the analysis more appropriately treats information from the unaffected family member than single-disease-locus analysis. As exemplified here in MS, the two-locus analysis can be a powerful method for investigating susceptibility loci in complex traits, best suited for analysis of specific candidate genes, or for situations in which preliminary evidence for linkage already exists or is suggested. 41 refs., 6 tabs.

  1. M.S. DEGREE PROGRAMS IN ENVIRONMENTAL SCIENCE POLICY AND PROCEDURES MANUAL

    E-Print Network [OSTI]

    Salvaggio, Carl

    1 M.S. DEGREE PROGRAMS IN ENVIRONMENTAL SCIENCE POLICY AND PROCEDURES MANUAL of Environmental Science is reflected in the graduate curricula and in the policy Environmental Science (ES) Program is composed of three tracks: BS, BS/MS, and MS

  2. Tricaine methane-sulfonate (MS-222) application in fish anaesthesia By N. Topic Popovic1

    E-Print Network [OSTI]

    Boynton, Walter R.

    Review Tricaine methane-sulfonate (MS-222) application in fish anaesthesia By N. Topic Popovic1 , I, Croatia Summary Tricaine methane-sulfonate (MS-222) is one of the most widely used anaesthetics in aquaculture and experimental procedures. Tricaine methane-sulphonate (MS-222), C9H11O2N + CH3SO3H, also known

  3. Ion Mobility Spectrometer / Mass Spectrometer (IMS-MS).

    SciTech Connect (OSTI)

    Hunka, Deborah E; Austin, Daniel

    2005-10-01

    The use of Ion Mobility Spectrometry (IMS)in the Detection of Contraband Sandia researchers use ion mobility spectrometers for trace chemical detection and analysis in a variety of projects and applications. Products developed in recent years based on IMS-technology include explosives detection personnel portals, the Material Area Access (MAA) checkpoint of the future, an explosives detection vehicle portal, hand-held detection systems such as the Hound and Hound II (all 6400), micro-IMS sensors (1700), ordnance detection (2500), and Fourier Transform IMS technology (8700). The emphasis to date has been on explosives detection, but the detection of chemical agents has also been pursued (8100 and 6400).Combining Ion Mobility Spectrometry (IMS) with Mass Spectrometry (MS)The IMS-MS combination overcomes several limitations present in simple IMS systems. Ion mobility alone is insufficient to identify an unknown chemical agent. Collision cross section, upon which mobility is based, is not sufficiently unique or predictable a priori to be able to make a confident peak assignment unless the compounds present are already identified. Molecular mass, on the other hand, is much more readily interpreted and related to compounds. For a given compound, the molecular mass can be determined using a pocket calculator (or in one's head) while a reasonable value of the cross-section might require hours of computation time. Thus a mass spectrum provides chemical specificity and identity not accessible in the mobility spectrum alone. In addition, several advanced mass spectrometric methods, such as tandem MS, have been extensively developed for the purpose of molecular identification. With an appropriate mass spectrometer connected to an ion mobility spectrometer, these advanced identification methods become available, providing greater characterization capability.3 AcronymsIMSion mobility spectrometryMAAMaterial Access AreaMSmass spectrometryoaTOForthogonal acceleration time-of-flightTOFtime-of-flight4

  4. Ion mobility spectrometer / mass spectrometer (IMS-MS).

    SciTech Connect (OSTI)

    Hunka Deborah Elaine; Austin, Daniel E.

    2005-07-01

    The use of Ion Mobility Spectrometry (IMS) in the Detection of Contraband Sandia researchers use ion mobility spectrometers for trace chemical detection and analysis in a variety of projects and applications. Products developed in recent years based on IMS-technology include explosives detection personnel portals, the Material Area Access (MAA) checkpoint of the future, an explosives detection vehicle portal, hand-held detection systems such as the Hound and Hound II (all 6400), micro-IMS sensors (1700), ordnance detection (2500), and Fourier Transform IMS technology (8700). The emphasis to date has been on explosives detection, but the detection of chemical agents has also been pursued (8100 and 6400). Combining Ion Mobility Spectrometry (IMS) with Mass Spectrometry (MS) is described. The IMS-MS combination overcomes several limitations present in simple IMS systems. Ion mobility alone is insufficient to identify an unknown chemical agent. Collision cross section, upon which mobility is based, is not sufficiently unique or predictable a priori to be able to make a confident peak assignment unless the compounds present are already identified. Molecular mass, on the other hand, is much more readily interpreted and related to compounds. For a given compound, the molecular mass can be determined using a pocket calculator (or in one's head) while a reasonable value of the cross-section might require hours of computation time. Thus a mass spectrum provides chemical specificity and identity not accessible in the mobility spectrum alone. In addition, several advanced mass spectrometric methods, such as tandem MS, have been extensively developed for the purpose of molecular identification. With an appropriate mass spectrometer connected to an ion mobility spectrometer, these advanced identification methods become available, providing greater characterization capability.

  5. Ms. Kimberly Krizanovic U.S. 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 Data Center Home Page on Delicious RankADVANCED MANUFACTURING OFFICESpecialAPPENDIX F WetlandsofOpen-AccessMotor SystemsMr.5, 2013 Ms. Julie0,

  6. ENG ME 582/ MS 582 Mechanical Behavior of Materials Prof. T.W. Murray ME 582/ MS 582 Mechanical Behavior of Materials

    E-Print Network [OSTI]

    Lin, Xi

    ENG ME 582/ MS 582 Mechanical Behavior of Materials Prof. T.W. Murray ME 582/ MS 582 Mechanical are Structural Mechanics (ENG ME309 or equivalent) and Engineering Mathematics (EMG ME400 or equivalent on Courseinfo. Recommended Text: T.H. Courtney, Mechanical Behavior of Materials (2nd Edition), Waveland Press

  7. Design and Fabrication of cm-scale Tesla Turbines

    E-Print Network [OSTI]

    Krishnan, Vedavalli Gomatam

    2015-01-01

    variable torque_efficiency = (T1loss - setup.bearingloss) %torque losses T1 = rFlow.T1rotor. *torque_efficiency; eta= head_efficiency. *torque_efficiency; %= T1. /( 2*pi*Uo. *

  8. TO

    Office of Legacy Management (LM)

    42-17, Grade A. It is not presently known whether the code number refers to the uranyl nitrate which was originally ordered or tc the UO3 which was actually reoeived....

  9. Quest for Environmentally-Benign Ligands for Actinide Separations: Thermodynamic, Spectroscopic, and Structural Characterization of U(VI) Complexes with Oxa-Diamide and Related Ligands

    E-Print Network [OSTI]

    Tian, Guoxin; Advanced Light Source

    2009-01-01

    The stock solution of uranyl perchlorate was prepared bysymmetric stretching mode of uranyl in the three complexes.in Figure 8 for the free uranyl cation (UO 22+ ), the value

  10. Theoretical Investigation of Uranyl Dihydroxide: Oxo Ligand Exchange, Water Catalysis, and Vibrational Spectra

    E-Print Network [OSTI]

    Schlegel, H. Bernhard

    Theoretical Investigation of Uranyl Dihydroxide: Oxo Ligand Exchange, Water Catalysis is employed to investigate uranyl dihydroxide, UO2(OH)2, isomerization reaction energy barriers, including those occurring via proton shuttles. The ground-state structure of a uranyl dihydroxide complex

  11. Conservative behavior of uranium vs. salinity in Arctic sea ice and brine Christelle Not a,

    E-Print Network [OSTI]

    ). In natural waters U is found mostly as dis- solved uranyl carbonates (UO2(CO3)3 4 - ) under oxidizing to (1) destabilization of uranyl carbonate complexes; (2) biological uptake; and/or (3) U adsorption

  12. Effects of Sexual Dimorphism and Landscape Composition on the Trophic Behavior of Greater Prairie-

    E-Print Network [OSTI]

    Sandercock, Brett K.

    , Mario Quevedo1,2 1 Research Unit of Biodiversity, (UO/CSIC/PA), Asturias, Spain, 2 Dpt. Biologi´a de Organismos y Sistemas, A´ rea de Ecologi´a, Universidad de Oviedo, Asturias, Spain, 3 Division of Biology

  13. A Study of Selected Chemical and Biological Conditions of the Lower Trinity River and the Upper Trinity Bay 

    E-Print Network [OSTI]

    Baldauf, R. J.

    1970-01-01

    Concern over the effects of water development projects on coastal nurseries prompted the Department of Wildlife Science of Texas A&M University, with the cooperation of the UO So Bureau of Commercial Fisheries, Galveston, ...

  14. Determination of vapor liquid equilibrium for the ternary iso-propanol/atactic-polypropylene/n-heptane mixture at 105C and 140C, and the binary iso-propanol/atactic-polypropylene mixture at 85C using perturbation gas chromatography / cby Lamar Lane Joffrion 

    E-Print Network [OSTI]

    Joffrion, Lamar Lane

    1984-01-01

    Taqg cog uozzag Z H pue uosqeN v pue 'zzogga as~qua s~qs go uo~s~r. zadns quaTged stq zog savoy' sayzeqg ~aqua pue aspayzouqoe oq saqstz zoqgne aqua 'AyyeuosgTppy uoxzepunog aouaToS yeuozgeN aqua pue iuaurqzedap Guxsaauzfu3 yeoxtsa~ gSV sexag aqua go...TzsTzaqoezeqg oTmeulpomzaqZ, azngxTH EuTTapog Lzoaqg uoTgnToS LT uo11ezado TeguamTzadx3 L1 NOIssnzsIG GNv szins33 aznpaoozd uoTgezedazd umnTog pue sTeTzaqeH TeoTmaqg sngezeddv ZNHHI33dX3 suoTgeTaH oTmeuEpomzaqZ, suoTgeTa3 oTqdez604emoIqg 'ZEOHHZ, NOIzzn...

  15. Energistyrelsen 9. juni 2008 Centre for Energy, Environment and Health (CEEH)

    E-Print Network [OSTI]

    data for new technologies (Fuel cells, Electrolysis, Wind turbines ..) Present power system optimization Climate change Met. modelling DMI/NERI/UoC Risø Resulting damages and costs on regional and local

  16. Evaluation of alternative fuel cycle strategies for nuclear power generation in the 21st century

    E-Print Network [OSTI]

    Boscher, Thomas

    2005-01-01

    The deployment of fuel recycling through either CONFU (COmbined Non-Fertile and UO2 fuel) thermal watercooled reactors (LWRs) or fast ABR (Actinide Burner Reactor) reactors is compared to the Once-Through LWR reactor system ...

  17. MARMOT Enhanced

    Broader source: Energy.gov [DOE]

    To develop mechanistic models for fuel thermal conductivity, the Fuel team used supercells up to 55 nm long to determine the thermal conductivity of UO2 with Xe incorporated.

  18. 2013-14 MCR Ambassador Application University of Oregon

    E-Print Network [OSTI]

    Oregon, University of

    (s) Minor(s) UO ID Term &Year Entered Total Number of College Credits Earned Cumulative GPA circumstances they may face during their college search. Please explain in no more than 500 words. 2. What piece

  19. Directory

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

    Mechanical Behavior of UO2 at Sub-grain Length Scales: Quantification of Elastic, Plastic and Creep ... (Properties) 91813 9:46 AM 91813 9:46 AM Send Document Link...

  20. Collapse scenarios of WTC 1 & 2 with extension to generic tall buildings 

    E-Print Network [OSTI]

    Usmani, Asif; Flint, Graeme; Jowsey, Allan; Roben, Charlotte; Torero, Jose L

    This paper presents a summary of the author’s investigation into the collapse of tall buildings. A large number of computational analyses have been carried out at the University of Edinburgh (UoE) over the last 4 years ...

  1. i i 'i i WWW--i i http://www.icmp.lviv.ua/

    E-Print Network [OSTI]

    . Adsorption of radionuclides on ferrocyanides: quantum-chemi- cal calculations I.V.Stasyuk, I.M.Krip, R-initio) the process of adsorption of UO2+ 2 , Cs+ , Sr2+ on ferrocyanides was inves- tigated. The structure

  2. Ris Report No. Danish Atomic Energy Commission

    E-Print Network [OSTI]

    UO.-Zr Fuel Pins. F. List, Reactor Dept. and P. Knudsen, Metallurgy Dept 45 Dispersion, Electronics Dept 69 Analysis of Metallic Ores by Radioisotope-excited X-Ray Fluorescence. L. Løvborg and H

  3. High Vowel Fricativization and Chain Shift

    E-Print Network [OSTI]

    Faytak, Matthew

    2014-01-01

    Aghem – 0 Isu – U, u Oku – (v)@, uo PCR – *u Ngv@@ Kom –v Ngv Chicken mbv´ mbv` U Death ´e-v´ v:U Ey-kuo @-kv *-kuo

  4. Subsurface Biogeochemical Research (SBR) Contractor-Grantee Workshop--Abstracts

    E-Print Network [OSTI]

    Hazen, Terry C.

    2010-01-01

    UO 2 by ferrihydrite, goethite, and hematite-coated quartzFe(III) oxides (primarily goethite) were present at the timeFe(III), ferrihydrite, goethite, and hematite. Unraveling

  5. Subsurface Uranium Fate and Transport: Integrated Experiments and Modeling of Coupled Biogeochemical Mechanisms of Nanocrystalline Uraninite Oxidation by Fe(III)-(hydr)oxides - Project Final Report

    SciTech Connect (OSTI)

    Peyton, Brent M. [Montana State University; Timothy, Ginn R. [University of California Davis; Sani, Rajesh K. [South Dakota School of Mines and Technology

    2013-08-14

    Subsurface bacteria including sulfate reducing bacteria (SRB) reduce soluble U(VI) to insoluble U(IV) with subsequent precipitation of UO2. We have shown that SRB reduce U(VI) to nanometer-sized UO2 particles (1-5 nm) which are both intra- and extracellular, with UO2 inside the cell likely physically shielded from subsequent oxidation processes. We evaluated the UO2 nanoparticles produced by Desulfovibrio desulfuricans G20 under growth and non-growth conditions in the presence of lactate or pyruvate and sulfate, thiosulfate, or fumarate, using ultrafiltration and HR-TEM. Results showed that a significant mass fraction of bioreduced U (35-60%) existed as a mobile phase when the initial concentration of U(VI) was 160 µM. Further experiments with different initial U(VI) concentrations (25 - 900 ?M) in MTM with PIPES or bicarbonate buffers indicated that aggregation of uraninite depended on the initial concentrations of U(VI) and type of buffer. It is known that under some conditions SRB-mediated UO2 nanocrystals can be reoxidized (and thus remobilized) by Fe(III)-(hydr)oxides, common constituents of soils and sediments. To elucidate the mechanism of UO2 reoxidation by Fe(III) (hydr)oxides, we studied the impact of Fe and U chelating compounds (citrate, NTA, and EDTA) on reoxidation rates. Experiments were conducted in anaerobic batch systems in PIPES buffer. Results showed EDTA significantly accelerated UO2 reoxidation with an initial rate of 9.5?M day-1 for ferrihydrite. In all cases, bicarbonate increased the rate and extent of UO2 reoxidation with ferrihydrite. The highest rate of UO2 reoxidation occurred when the chelator promoted UO2 and Fe(III) (hydr)oxide dissolution as demonstrated with EDTA. When UO2 dissolution did not occur, UO2 reoxidation likely proceeded through an aqueous Fe(III) intermediate as observed for both NTA and citrate. To complement to these laboratory studies, we collected U-bearing samples from a surface seep at the Rifle field site and have measured elevated U concentrations in oxic iron-rich sediments. To translate experimental results into numerical analysis of U fate and transport, a reaction network was developed based on Sani et al. (2004) to simulate U(VI) bioreduction with concomitant UO2 reoxidation in the presence of hematite or ferrihydrite. The reduction phase considers SRB reduction (using lactate) with the reductive dissolution of Fe(III) solids, which is set to be microbially mediated as well as abiotically driven by sulfide. Model results show the oxidation of HS– by Fe(III) directly competes with UO2 reoxidation as Fe(III) oxidizes HS– preferentially over UO2. The majority of Fe reduction is predicted to be abiotic, with ferrihydrite becoming fully consumed by reaction with sulfide. Predicted total dissolved carbonate concentrations from the degradation of lactate are elevated (log(pCO2) ~ –1) and, in the hematite system, yield close to two orders-of-magnitude higher U(VI) concentrations than under initial carbonate concentrations of 3 mM. Modeling of U(VI) bioreduction with concomitant reoxidation of UO2 in the presence of ferrihydrite was also extended to a two-dimensional field-scale groundwater flow and biogeochemically reactive transport model for the South Oyster site in eastern Virginia. This model was developed to simulate the field-scale immobilization and subsequent reoxidation of U by a biologically mediated reaction network.

  6. Evaluation of weapons-grade mixed oxide fuel performance in U.S. Light Water Reactors using COMETHE 4D release 23 computer code 

    E-Print Network [OSTI]

    Bellanger, Philippe

    1999-01-01

    similar conventional UO? fuel. Weapons-grade MOX behavior. However, MOX fuel rods feature higher fuel centerline temperatures due to a lower thermal conductivity. Moreover, higher diffusion in MOX fuel results in a slightly higher fission gas release...

  7. Department of architecturein portlanD

    E-Print Network [OSTI]

    and stakeholders who are pioneering ecological urbanism. Our community of planners, architects, and civic leaders it easy to understand sustainable principles for creating resilient built environments recognized for educating architects who understand and practice sustainable design. The UO architecture

  8. Emergent Properties of the Bose-Einstein-Hubbard Condensate in...

    Office of Scientific and Technical Information (OSTI)

    Technical Report: Emergent Properties of the Bose-Einstein-Hubbard Condensate in UO2(+x) Citation Details In-Document Search Title: Emergent Properties of the Bose-Einstein-Hubbard...

  9. Possible Bose-condensate Behavior in a Quantum Phase Originating...

    Office of Scientific and Technical Information (OSTI)

    Possible Bose-condensate Behavior in a Quantum Phase Originating in a Collective Excitation in the Chemically and Optically Doped Mott-Hubbard System UO2+x Citation Details...

  10. A new approach to increasing diversity in engineering at the example of women in engineering 

    E-Print Network [OSTI]

    Schäfer, Andrea

    2006-01-01

    A new initiative to incorporate diversity issues into the common engineering curriculum at the University of Wollongong (UoW) in Australia is outlined and the effect on student awareness quantified. The diversity issues ...

  11. Determining Plutonium Mass in Spent Fuel with Nondestructive Assay Techniques NGSI Research Overview and Update on NDA Techniques

    E-Print Network [OSTI]

    A., V. Mozin, S.J. Tobin, L.W. Cambell, J.R. Cheatham, C.R. Freeman, C.J. Gesh,

    2012-01-01

    considered one of the 17x17 PWR assemblies from the NGSIplutonium signal because in a PWR spent fuel its content isspectra for a single PWR fuel pin with fresh and spent UO 2

  12. On the Disposition of Graphite Containing TRISO Particles and the Aqueous Transport of Radionuclides via Heterogeneous Geological Formations

    E-Print Network [OSTI]

    van den Akker, Bret Patrick

    2012-01-01

    element) 0.225 (compact only) 5.144 Graphite CSNF 21-PWR12-PWR 44-BWR 24-BWR UO2 21 PWR fuel assemblies 12 PWR fuel assemblies, 44

  13. DOE - Office of Legacy Management -- University of California...

    Office of Legacy Management (LM)

    Subject: List of California Sites; May 17, 1989 CA.05-3 - AEC Memorandum; Ball to Smith; Subject: 500 Pounds UO3 - SR-1952; July 10, 1951 CA.05-4 - AEC Memorandum; Blatzs to...

  14. CX-012689: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Experimental Validation of UO2 Microstructural Evolution for NEAMS tool MARMOT – University of Florida CX(s) Applied: B3.6Date: 41869 Location(s): FloridaOffices(s): Nuclear Energy

  15. Analysis of conventional and plutonium recycle unit-assemblies for the Yankee (Rowe) PWR

    E-Print Network [OSTI]

    Mertens, Paul Gustaaf

    1971-01-01

    An analysis and comparison of Unit Conventional UO2 Fuel-Assemblies and proposed Plutonium Recycle Fuel Assemblies for the Yankee (Rowe) Reactor has been made. The influence of spectral effects, at the watergaps -and ...

  16. HFIR Plant Maintenance - August

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

    diffusion limited reaction of U3O8 to UO3. * TGA analysis of the oxidation of actual used fuel under a controlled atmosphere, conducted in REDC Cave B, correlated well with models....

  17. MOX Fuel Presentation to Duke Board of Directors

    National Nuclear Security Administration (NNSA)

    PuO 2 with 95% depleted UO 2 - Like LEU fuel pellets, MOX fuel pellets are primarily uranium * Fission power comes primarily from plutonium (Pu 239 ) instead of uranium (U 235 )...

  18. Sandia Energy - EC Publications

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

    assembly. The assembly rods to be used for the tests will not be actual irradiated zirconium alloyUO2-pellet rods. Surrogate rods shall be selected that have similar mass and...

  19. Advanced LWR Nuclear Fuel Development

    Energy Savers [EERE]

    308L Steam separator and dryer: * components, 304 * welds 308L Closure studs: * alloy steel Fuel: * Cladding, Zr-2 * Fuel, UO 2 Source: R. Staehle There are many materials in a...

  20. Laboratory Experiments and their Applicability 

    E-Print Network [OSTI]

    Steinhaus, Thomas; Jahn, Wolfram

    2007-11-14

    In conjunction with the Dalmarnock Fire Tests a series of laboratory tests have been conducted at the BRE Centre for Fire Safety Engineering at the University of Edinburgh (UoE) in support of the large scale tests. These ...

  1. Effect of temperature on the complexation of Uranium(VI) with fluoride in aqueous solutions

    SciTech Connect (OSTI)

    Tian, Guoxin; Rao, Linfeng

    2009-05-18

    Complexation of U(VI) with fluoride at elevated temperatures in aqueous solutions was studied by spectrophotometry. Four successive complexes, UO{sub 2}F{sup +}, UO{sub 2}F{sub 2}(aq), UO{sub 2}F{sub 3}{sup -}, and UO{sub 2}F{sub 4}{sup 2-}, were identified, and the stability constants at 25, 40, 55, and 70 C were calculated. The stability of the complexes increased as the temperature was elevated. The enthalpies of complexation at 25 C were determined by microcalorimetry. Thermodynamic parameters indicate that the complexation of U(VI) with fluoride in aqueous solutions at 25 to 70 C is slightly endothermic and entropy-driven. The Specific Ion Interaction (SIT) approach was used to obtain the thermodynamic parameters of complexation at infinite dilution. Structural information on the U(VI)/fluoride complexes was obtained by extended X-ray absorption fine structure spectroscopy.

  2. La neutronique est l'tude de l'etat des neutrons dans la matire et des ractions qu'ils y induisent, en particulier la gnration de puissance dans les coe urs de centrales par la fission de

    E-Print Network [OSTI]

    réacteur 4.5 x x 1.7 m3 Débit d'eau à l'entrée du réacteur 1m3 s-1 Eau 190 °C en entrée 320°C en sortie de placés verticalement dans la cuve Crayon: 272 pastilles de combustible (UO2 ou Mox:PuO2 /UO2 ) Assemblage l'U235 Energie libérée (colle) lors de la fission EF = m c2 techniquement difficile car haute T pour

  3. Sub-ms dynamics of the instability onset of electrospinning

    E-Print Network [OSTI]

    Martina Montinaro; Vito Fasano; Maria Moffa; Andrea Camposeo; Luana Persano; Marco Lauricella; Sauro Succi; Dario Pisignano

    2015-05-01

    Electrospun polymer jets are imaged for the first time at an ultra-high rate of 10,000 frames per second, investigating the process dynamics, and the instability propagation velocity and displacement in space. The polymer concentration, applied voltage bias and needle-collector distance are systematically varied, and their influence on the instability propagation velocity and on the jet angular fluctuations analyzed. This allows us to unveil the instability formation and cycling behavior, and its exponential growth at the onset, exhibiting radial growth rates of the order of 10^3 s^-1. Allowing the conformation and evolution of polymeric solutions to be studied in depth, high-speed imaging at sub-ms scale shows a significant potential for improving the fundamental knowledge of electrified jets, leading to obtain finely controllable bending and solution stretching in electrospinning, and consequently better designed nanofibers morphologies and structures.

  4. Last Name First Name Grad_year Degree Major Title KAMENIDIS PANAGIOTIS 2009 MS Design, Housing and

    E-Print Network [OSTI]

    PENUGONDA KAVITHA 2009 MS Nutritional Sciences Effects of chronic green tea flavonoid supplementation

  5. Discovery of novel glucose-regulated proteins in isolated human pancreatic islets using LC-MS/MS-based proteomics

    SciTech Connect (OSTI)

    Rutledge, Alexandra C.; Fontes, Ghislaine; Gritsenko, Marina A.; Norbeck, Angela D.; Anderson, David J.; Waters, Katrina M.; Adkins, Joshua N.; Smith, Richard D.; Poitout, Vincent; Metz, Thomas O.

    2012-07-06

    The prevalence of diabetes mellitus is increasing dramatically throughout the world, and the disease has become a major public health issue. The most common form of the disease, type 2 diabetes, is due in part to insufficient insulin production from the pancreatic beta-cell. Since glucose is the most potent and physiologically important regulators of beta-cell function under physiological conditions, understanding the insulin secretory defect underlying type 2 diabetes requires a better understanding of glucose regulation of beta-cell function. To this aim, a bottom-up LC-MS/MS-based proteomics approach was used to profile pooled islets from multiple donors under basal (5 mM) or high (15 mM) glucose conditions. Our analysis discovered 256 differentially abundant proteins ({approx}p < 0.05) after 24 h of high glucose exposure from more than 4500 identified in total. Several novel glucose-regulated proteins were elevated under high glucose conditions, including regulators of mRNA splicing (Pleiotropic regulator 1), processing (Retinoblastoma binding protein 6), and function (Nuclear RNA export factor 1), in addition to Neuron navigator 1 and Plasminogen activator inhibitor 1. Proteins whose abundances markedly decreased during incubation at 15 mM glucose included Bax inhibitor 1 and Synaptotagmin-17. Many proteins found to be differentially abundant after high glucose stimulation were uncharacterized or hypothetical. These findings expand our knowledge of glucose regulation of the human islet proteome and suggest many hitherto unknown responses to glucose that require additional studies to explore novel functional roles.

  6. Ms Robin Felder | U.S. DOE Office of Science (SC)

    Office of Science (SC) Website

    Ms. Robin Felder Chemical Sciences, Geosciences, & Biosciences (CSGB) Division CSGB Home About Staff What's New Research Areas Reports and Activities Science Highlights Principal...

  7. Dean's Teaching/Graduate Assistantship Application Form for Civil/Bioengineering Programs (MS Degree Only)

    E-Print Network [OSTI]

    Fernandez, Eduardo

    Dean's Teaching/Graduate Assistantship Application Form for Civil/Bioengineering Programs (MS, Environmental & Geomatics Engineering - EG 221, Attention: K. Sobhan, 561.297.3473 BIOENGINEERING: Dept

  8. 41On the Water Front I Dr. Peter H. Gleick and Ms. Meena Palaniappan Palaniappan

    E-Print Network [OSTI]

    by a growing competition for water, increasing ecological degradation associated with human extraction of water41On the Water Front I Dr. Peter H. Gleick and Ms. Meena Palaniappan Ms. Meena Palaniappan Director, International Water and Communities Initiative Pacific Institute for Studies in Development, Environment

  9. Stanford MBA/MS Electrical Engineering Joint Degree Program Page 1 of 20 August 18, 2014

    E-Print Network [OSTI]

    Kay, Mark A.

    Stanford MBA/MS Electrical Engineering Joint Degree Program Page 1 of 20 August 18, 2014 Becky at the end of this transcript. Stanford MBA/MS Electrical Engineering Joint Degree Webinar August 18, 2014 on the Masters in Electrical Engineering and MBA Joint Degree Program. We are going to be together here for 45

  10. Montana State University 1 M.S. in Optics Plan A

    E-Print Network [OSTI]

    Maxwell, Bruce D.

    Montana State University 1 M.S. in Optics Plan A The M.S. Degree in Optics and Photonics is an interdisciplinary, cooperative program managed by the Optics Program Committee on behalf of the three participating directly to the Optics and Photonics Graduate Program and are admitted through one of the participating

  11. Montana State University 1 M.S. in Optics Plan B

    E-Print Network [OSTI]

    Maxwell, Bruce D.

    Montana State University 1 M.S. in Optics Plan B The M.S. Degree in Optics and Photonics is an interdisciplinary, cooperative program managed by the Optics Program Committee on behalf of the three participating directly to the Optics and Photonics Graduate Program and are admitted through one of the participating

  12. 1 AVS 2001 National Symposium, MS-TuA9 Research supported by

    E-Print Network [OSTI]

    Rubloff, Gary W.

    1 AVS 2001 National Symposium, MS-TuA9 Research supported by In-Situ FTIR Spectroscopy of Maryland, College Park, MD C.A. Gogol, J.F. Kushneir Inficon, Inc. East Syracuse, NY #12;2 AVS 2001 Spectroscopy Acoustic Sensing Ultra-Violet Spectroscopy #12;3 AVS 2001 National Symposium, MS-TuA9 Non

  13. ENG BE/ME/MS 504: Polymers and Soft Materials GRS PY 744: Polymer Physics.

    E-Print Network [OSTI]

    Vajda, Sandor

    ENG BE/ME/MS 504: Polymers and Soft Materials GRS PY 744: Polymer Physics. Prof. Rama Bansil Class: Blackboard.bu.edu ME/MS/BE 504 PY 744 A1 POLYMERS AND SOFT MATERIALS (FALL 2012) (12FALLENGME504_A1) E with thermodynamics and statistical mechanics will be assumed. Practical applications of polymers will be discussed

  14. Calendrier de Polytechnique Guide pour optimiser vos images avec MS-Paint

    E-Print Network [OSTI]

    Meunier, Michel

    Calendrier de Polytechnique Guide pour optimiser vos images avec MS-Paint Version du 20 avril 2012...................................................................................................................................................................... 3 Chargement de l'image dans Paint. Chacune de ces manipulations se fait grâce au logiciel MS-Paint (disponible sur tous les postes de travail

  15. MEMS & BioMEMS Chip-Scale Quadrupole Mass Filters for a Micro Gas Analyzer ...................................................................................................................MS.1

    E-Print Network [OSTI]

    Reif, Rafael

    MEMS & BioMEMS Chip-Scale Quadrupole Mass Filters for a Micro Gas Analyzer...................................................................................................................MS.2 MEMS-based Plasma Probes for Spacecraft Re-entry Monitoring.........................................................................MS.4 Direct Patterning of Metallic MEMS through Microcontact Printing

  16. Energy Frontier Research Center Center for Materials Science of Nuclear Fuels

    SciTech Connect (OSTI)

    Todd Allen

    2014-04-01

    Scientific Successes • The first phonon density of states (PDOS) measurements for UO2 to include anharmonicity were obtained using time-of-flight inelastic neutron scattering at the Spallation Neutron Source (SNS), and an innovative, experimental-based anharmonic smoothing technique has enabled quantitative benchmarking of ab initio PDOS simulations. • Direct comparison between anharmonicity-smoothed ab initio PDOS simulations for UO2 and experimental measurements has demonstrated the need for improved understanding of UO2 at the level of phonon dispersion, and, further, that advanced lattice dynamics simulations including finite temperatures approaches will be required for handling this strongly correlated nuclear fuel. • PDOS measurements performed on polycrystalline samples have identified the phonon branches and energy ranges most highly impacted by fission-product and hyper-stoichiometry lattice defects in UO2. These measurements have revealed the broad-spectrum impact of oxygen hyper-stoichiometry on thermal transport. The reduction in thermal conductivity caused by hyper-stoichiometry is many times stronger than that caused by substitutional fission-product impurities. • Laser-based thermo-reflectance measurements on UO2 samples irradiated with light (i.e. He) ions to introduce point defects have been coupled with MD simulations and lattice parameter measurements to determine the role of uranium and oxygen point defects in reducing thermal conductivity. • A rigorous perturbation theory treatment of phonon lifetimes in UO2 based on a 3D discretization of the Brillouin zone coupled with experimentally measured phonon dispersion has been implemented that produces improved predictions of the temperature dependent thermal conductivity. • Atom probe investigations of the influence of grain boundary structure on the segregation behavior of Kr in UO2 have shown that smaller amounts of Kr are present at low angle grain boundaries than at large angle grain boundaries due to the more dense dislocation arrays associated with large angle boundaries; this observation has potentially important ramifications for thermal transport in the high burn-up rim region of light water reactor fuel. • A variable charge interatomic potential has been developed that not only provides an accurate representation of the fluorite UO2 phase, it is further capable of describing continuous stoichiometry changes from UO2 to hyper-stoichiometric UO2+x, to U4O9 and U3O7, and possibly to orthorhombic U3O8. This is the first potential that features many-body effects in all possible interactions (U-U, U-O and O-O) combined with the variable charge. • A theoretical proof has been formulated showing that it is necessary to use the so-called model C phase field approach, consisting of Cahn-Hilliard and Allen-Cahn equations, to describe void evolution in irradiated materials. This work resolved a longstanding literature controversy regarding how to model voids at the mesoscale. • A novel cluster dynamics model has been developed for the nucleation of voids and loops in UO2 under irradiation. This model is important in understanding the defect state of UO2 after irradiation and, more importantly, reveals off-stoichiometric states of irradiated UO2 that are critical for understanding the impact of irradiation on thermal transport. Personnel Successes

  17. MS Outlook 2003 Secure IMAP Configuration Settings for Windows-based PC for HMS Local and Remote Usage

    E-Print Network [OSTI]

    Zhang, Yi

    MS Outlook 2003 Secure IMAP Configuration Settings for Windows-based PC for HMS Local and Remote. Technical support is available only for the web-based email client, Outlook Web Access (OWA). · *Pre/install the updates for Outlook. (This document has been tested using MS Outlook 2003.) Step 1: Launch MS Outlook 2003

  18. MS Outlook 2003 Secure POP Configuration Settings for Windows-based PC for HMS Local and Remote Usage

    E-Print Network [OSTI]

    Zhang, Yi

    MS Outlook 2003 Secure POP Configuration Settings for Windows-based PC for HMS Local and Remote for the web-based email client, Outlook Web Access (OWA). · *Pre-doctoral students entering medical school/install any updates for Outlook. (This document has been tested using MS Outlook 2003.) Step 1: Launch MS

  19. TEXTS OF EMPOWERMENT: A FUNCTIONAL RHETORICAL ANALYSIS OF MS. MAGAZINE IN THE FIRST FIVE YEARS

    E-Print Network [OSTI]

    Partlow Lefevre, Sarah Taylor

    2009-07-21

    Ms. was the first mass mediated feminist magazine in the United States and has often been identified as an icon of the feminist movement. This study examines three rhetorical sites in the magazine during the first five ...

  20. STATEMENT OF INTENT TO RECEIVE A GRADUATE DEGREE MS DEGREE | NON-THESIS OPTION

    E-Print Network [OSTI]

    Anderson, Paul R.

    STATEMENT OF INTENT TO RECEIVE A GRADUATE DEGREE MS DEGREE | NON-THESIS OPTION Biomedical Sciences. Signature of Candidate Date Advisor or Program Director Signature Date Print Name BG_NonThesis

  1. Rev: Sept 20, 2011 PLAN OF WORK M.S. IN MANUFACTURING ENGINEERING

    E-Print Network [OSTI]

    Berdichevsky, Victor

    : Quality Management Systems (4 Cr.) IE 6270: Design of Experiments (4 Cr.) IE 6310: Lean Operations/ManufacturingRev: Sept 20, 2011 PLAN OF WORK ­ M.S. IN MANUFACTURING ENGINEERING Specialization: Quality

  2. Rev: Sept 20, 2011 PLAN OF WORK M.S. IN INDUSTRIAL ENGINEERING

    E-Print Network [OSTI]

    VandeVord, Pamela

    Engineering Statistics Regular Courses IE 6310: Lean Operations/Manufacturing (2 Cr., Coreq: IE6430) IE 6430Rev: Sept 20, 2011 PLAN OF WORK ­ M.S. IN INDUSTRIAL ENGINEERING Specialization: Lean Operations

  3. Glass particles produced by laser ablation for ICP-MS measurements

    E-Print Network [OSTI]

    Gonzalez, J.; Liu, C.; Wen, S.; Mao, X.; Russo, R.E.

    2008-01-01

    Glass particles produced by laser ablation for ICP-MS266nm) was used to generate glass particles from two sets ofWhen the current data on glass were compared with the metal

  4. Training is sponsoring two MS PowerPoint Courses. The course...

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

    Training is sponsoring two MS PowerPoint Courses. The course options feature level 1 and level 2. This email is to gauge interest. The associated cost per class is 200.00. If...

  5. Renee Gunderson, M.S. Program Director, B.S. Information and Communication Technologies

    E-Print Network [OSTI]

    Wu, Mingshen

    Renee Gunderson, M.S. Program Director, B.S. Information and Communication Technologies University of Wisconsin-Stout Apparel and Communications Technology Department Information Technology Management 206 centers, and virtualized environment security and auditing. Information technology government and industry

  6. SOLID STATE ELECTRONICS ECE 103 M.S. COMPREHENSIVE EXAM SPRING 2013

    E-Print Network [OSTI]

    Wang, Deli

    SOLID STATE ELECTRONICS ­ ECE 103 M.S. COMPREHENSIVE EXAM SPRING 2013 1. Semiconductor fundamentals-type Si sample with one end heavily doped so that the carrier concentration is 10 times greater than

  7. MS 211 -Turma G -Projeto No. 1 Data de Entrega: 25/03/08

    E-Print Network [OSTI]

    Sussner, Peter

    MS 211 - Turma G - Projeto No. 1 Data de Entrega: 25/03/08 1. O que acontece na execu¸c~ao de c´alculos

  8. Barium uranyl diphosphonates

    SciTech Connect (OSTI)

    Nelson, Anna-Gay D.; Alekseev, Evgeny V.; Ewing, Rodney C.; Albrecht-Schmitt, Thomas E.

    2012-08-15

    Three Ba{sup 2+}/UO{sub 2}{sup 2+} methylenediphosphonates have been prepared from mild hydrothermal treatment of uranium trioxide, methylendiphosphonic acid (C1P2) with barium hydroxide octahydrate, barium iodate monohydrate, and small aliquots of HF at 200 Degree-Sign C. These compounds, Ba[UO{sub 2}[CH{sub 2}(PO{sub 3}){sub 2}]{center_dot}1.4H{sub 2}O (Ba-1), Ba{sub 3}[(UO{sub 2}){sub 4}(CH{sub 2}(PO{sub 3}){sub 2}){sub 2}F{sub 6}]{center_dot}6H{sub 2}O (Ba-2), and Ba{sub 2}[(UO{sub 2}){sub 2}(CH{sub 2}(PO{sub 3}){sub 2})F{sub 4}]{center_dot}5.75H{sub 2}O (Ba-3) all adopt layered structures based upon linear uranyl groups and disphosphonate molecules. Ba-2 and Ba-3 are similar in that they both have UO{sub 5}F{sub 2} pentagonal bipyramids that are bridged and chelated by the diphosphonate moiety into a two-dimensional zigzag anionic sheet (Ba-2) and a one-dimensional ribbon anionic chain (Ba-3). Ba-1, has a single crystallographically unique uranium metal center where the C1P2 ligand solely bridges to form [UO{sub 2}[CH{sub 2}(PO{sub 3}){sub 2}]{sup 2-} sheets. The interlayer space of the structures is occupied by Ba{sup 2+}, which, along with the fluoride ion, mediates the structure formed and maintains overall charge balance. - Graphical abstract: Illustration of the stacking of the layers in Ba{sub 3}[(UO{sub 2}){sub 4}(CH{sub 2}(PO{sub 3}){sub 2}){sub 2})F{sub 6}]{center_dot}6H{sub 2}O viewed along the c-axis. The structure is constructed from UO{sub 7} pentagonal bipyramidal units, U(1)O{sub 7}=gray, U(2)O{sub 7}=yellow, barium=blue, phosphorus=magenta, fluorine=green, oxygen=red, carbon=black, and hydrogen=light peach. Highlights: Black-Right-Pointing-Pointer The polymerization of the UO{sub 2}{sup 2+} sites to form uranyl dimers leads to structural variations in compounds. Black-Right-Pointing-Pointer Barium cations stitch uranyl diphosphonate anionic layers together, and help mediate structure formation. Black-Right-Pointing-Pointer HF acts as both a mineralizing agent and a ligand.

  9. The burnup dependence of light water reactor spent fuel oxidation

    SciTech Connect (OSTI)

    Hanson, B.D.

    1998-07-01

    Over the temperature range of interest for dry storage or for placement of spent fuel in a permanent repository under the conditions now being considered, UO{sub 2} is thermodynamically unstable with respect to oxidation to higher oxides. The multiple valence states of uranium allow for the accommodation of interstitial oxygen atoms in the fuel matrix. A variety of stoichiometric and nonstoichiometric phases is therefore possible as the fuel oxidizers from UO{sub 2} to higher oxides. The oxidation of UO{sub 2} has been studied extensively for over 40 years. It has been shown that spent fuel and unirradiated UO{sub 2} oxidize via different mechanisms and at different rates. The oxidation of LWR spent fuel from UO{sub 2} to UO{sub 2.4} was studied previously and is reasonably well understood. The study presented here was initiated to determine the mechanism and rate of oxidation from UO{sub 2.4} to higher oxides. During the early stages of this work, a large variability in the oxidation behavior of samples oxidized under nearly identical conditions was found. Based on previous work on the effect of dopants on UO{sub 2} oxidation and this initial variability, it was hypothesized that the substitution of fission product and actinide impurities for uranium atoms in the spent fuel matrix was the cause of the variable oxidation behavior. Since the impurity concentration is roughly proportional to the burnup of a specimen, the oxidation behavior of spent fuel was expected to be a function of both temperature and burnup. This report (1) summarizes the previous oxidation work for both unirradiated UO{sub 2} and spent fuel (Section 2.2) and presents the theoretical basis for the burnup (i.e., impurity concentration) dependence of the rate of oxidation (Sections 2.3, 2.4, and 2.5), (2) describes the experimental approach (Section 3) and results (Section 4) for the current oxidation tests on spent fuel, and (3) establishes a simple model to determine the activation energies associated with spent fuel oxidation (Section 5).

  10. Thermophysical properties of uranium dioxide - Version 0 for peer review

    SciTech Connect (OSTI)

    Fink, J.K.; Petri, M.C.

    1997-02-01

    Data on thermophysical properties of solid and liquid UO{sub 2} have been reviewed and critically assessed to obtain consistent thermophysical property recommendations for inclusion in the International Nuclear Safety Center Database on the World Wide Web (http://www.insc.anl.gov.). Thermodynamic properties that have been assessed are enthalpy, heat capacity, melting point, enthalpy of fusion, thermal expansion, density, surface tension, and vapor pressure. Transport properties that have been assessed are thermal conductivity, thermal diffusivity, viscosity, and emissivity. Summaries of the recommendations with uncertainties and detailed assessments for each property are included in this report and in the International Nuclear Safety Center Database for peer review. The assessments includes a review of the experiments and data, an examination of previous recommendations, the basis for selecting recommendations, a determination of uncertainties, and a comparison of recommendations with data and with previous recommendations. New data and research that have led to new recommendations include thermal expansion and density measurements of solid and liquid UO{sub 2}, derivation of physically-based equations for the thermal conductivity of solid UO{sub 2}, measurements of the heat capacity of liquid UO{sub 2}, and measurements and analysis of the thermal conductivity of liquid UO{sub 2}.

  11. Standard test method for determination of impurities in plutonium: acid dissolution, ion exchange matrix separation, and inductively coupled plasma-atomic emission spectroscopic (ICP/AES) analysis

    E-Print Network [OSTI]

    American Society for Testing and Materials. Philadelphia

    2003-01-01

    1.1 This specification covers blended uranium trioxide (UO3), U3O8, or mixtures of the two, powders that are intended for conversion into a sinterable uranium dioxide (UO2) powder by means of a direct reduction process. The UO2 powder product of the reduction process must meet the requirements of Specification C 753 and be suitable for subsequent UO2 pellet fabrication by pressing and sintering methods. This specification applies to uranium oxides with a 235U enrichment less than 5 %. 1.2 This specification includes chemical, physical, and test method requirements for uranium oxide powders as they relate to the suitability of the powder for storage, transportation, and direct reduction to UO2 powder. This specification is applicable to uranium oxide powders for such use from any source. 1.3 The scope of this specification does not comprehensively cover all provisions for preventing criticality accidents, for health and safety, or for shipping. Observance of this specification does not relieve the user of th...

  12. EFRC CMSNF Major Accomplishments

    SciTech Connect (OSTI)

    D. Hurley; Todd R. Allen

    2014-09-01

    The mission of the Center for Material Science of Nuclear Fuels (CMSNF) has been to develop a first-principles-based understanding of thermal transport in the most widely used nuclear fuel, UO2, in the presence of defect microstructure associated with radiation environments. The overarching goal within this mission was to develop an experimentally validated multiscale modeling capability directed toward a predictive understanding of the impact of radiation and fission-product induced defects and microstructure on thermal transport in nuclear fuel. Implementation of the mission was accomplished by integrating the physics of thermal transport in crystalline solids with microstructure science under irradiation through multi institutional experimental and computational materials theory teams from Idaho National Laboratory, Oak Ridge National Laboratory, Purdue University, the University of Florida, the University of Wisconsin, and the Colorado School of Mines. The Center’s research focused on five major areas: (i) The fundamental aspects of anharmonicity in UO2 crystals and its impact on thermal transport; (ii) The effects of radiation microstructure on thermal transport in UO2; (iii) The mechanisms of defect clustering in UO2 under irradiation; (iv) The effect of temperature and oxygen environment on the stoichiometry of UO2; and (v) The mechanisms of growth of dislocation loops and voids under irradiation. The Center has made important progress in each of these areas, as summarized below.

  13. July 7, 2008 17:20 World Scientific Book -9in x 6in MS(QHA) Publishers' page

    E-Print Network [OSTI]

    Ansari, Qamrul Hasan

    July 7, 2008 17:20 World Scientific Book - 9in x 6in MS(QHA) Publishers' page i #12;July 7, 2008 17:20 World Scientific Book - 9in x 6in MS(QHA) Publishers' page ii #12;July 7, 2008 17:20 World Scientific Book - 9in x 6in MS(QHA) Publishers' page iii #12;July 7, 2008 17:20 World Scientific Book - 9in x 6in

  14. Suggested Course Sequence for Biochemistry (BS) and Biomedical Engineering (MS) Fast Track Program

    E-Print Network [OSTI]

    Texas at Arlington, University of

    Suggested Course Sequence for Biochemistry (BS) and Biomedical Engineering (MS) Fast Track Program BE 1225 Introduction to Biomedical Engineering 2 CHEM 1442 General Chemistry II 4 CHEM 1441 General MAE 2314 Fluid Mechanics I 3 CHEM 3315 Introduction to Biophysical Chemistry 3 CHEM 4312 Biochemistry

  15. CALIBRATING MS-SSIM FOR COMPRESSION DISTORTIONS USING MLDS C. Charrier1

    E-Print Network [OSTI]

    Maloney, Laurence T.

    its performance. Index Terms-- Difference scaling, Genetic algorithm, MS-SSIM. 1. INTRODUCTION Lossy image compression techniques such as JPEG2000 al- low high compression rates, but only at the cost as the compression rate is increased to optimize the construction of psychovisual scale. Such a scale will serve

  16. MS Degree Program in Computer Engineering College of Engineering and Computer Science

    E-Print Network [OSTI]

    de Lijser, Peter

    MS Degree Program in Computer Engineering College of Engineering and Computer Science California systems. Students are also encouraged to take courses from the graduate program in Computer Science State University, Fullerton The Computer Engineering Program in the College of Engineering and Computer

  17. "Soup"er Soups from Turkey Alice Henneman, MS, RD, Extension Educator

    E-Print Network [OSTI]

    Powers, Robert

    "Soup"er Soups from Turkey Leftovers Alice Henneman, MS, RD, Extension Educator ahenneman1@unl.edu food.unl.edu Give new life to turkey leftovers with these turkey soup recipes. They start with the same basic ingredients of 1 quart (4 cups) low sodium chicken broth and 2 cups of chopped, cooked turkey

  18. MS-Technology Management Report on FACTORS GOVERNING THE USE OF COMPUTATIONAL &

    E-Print Network [OSTI]

    Schleife, André

    MS-Technology Management Report on FACTORS GOVERNING THE USE OF COMPUTATIONAL & SIMULATION MODELING WITHIN THE AMERICAN MANUFACTURING INDUSTRY Majed Alotaibi Jose Arbelaez Evan Burness Jae Joon Hyun Iru innovations has been one of the most important and value-adding developments among American manufacturers over

  19. OTC 23597-MS Numerical Simulation of Floating Offshore Wind Turbines Including Aero-

    E-Print Network [OSTI]

    Sweetman, Bert

    OTC 23597-MS Numerical Simulation of Floating Offshore Wind Turbines Including Aero- Elasticity methodology is presented for simulation of dynamic behavior of floating offshore wind turbines. Wind forces. Introduction and Background The economic potential of offshore deep water wind turbines has not yet been fully

  20. Modeling removal of bacteriophages MS2 and PRD1 by dune recharge at Castricum, Netherlands

    E-Print Network [OSTI]

    Hassanizadeh, S. Majid

    Modeling removal of bacteriophages MS2 and PRD1 by dune recharge at Castricum, Netherlands Jack F by dune recharge was studied at a field site in the dune area of Castricum, Netherlands. Recharge water at investigating virus removal processes during dune recharge, are presented. In the Netherlands, about 14

  1. A MALDI, TGA, TG/MS, and DEA study of the irradiation effects on PMMA

    E-Print Network [OSTI]

    Harmon, Julie P.

    A MALDI, TGA, TG/MS, and DEA study of the irradiation effects on PMMA S.R. Tatro, G.R. Baker, K October 2002 Abstract Poly(methyl methacrylate) (PMMA) (Mw ¼ 6.4 £ 103 , PD ¼ 1.06) was irradiated under(methyl methacrylate); Radiation 1. Introduction This study focuses on the irradiation of highly syndio- tactic poly

  2. Chinese House Prof. John Yin and Ms. Diana Sun, Program Directors

    E-Print Network [OSTI]

    Hayden, Nancy J.

    1 Chinese House Prof. John Yin and Ms. Diana Sun, Program Directors OVERVIEW The Chinese House are interested in various aspects of the Chinese culture as well as to those who are learning the Chinese in extracurricular activities that would enrich their experiences with Chinese culture and reinforce their Chinese

  3. Rev: Dec 6, 2012 PLAN OF WORK M.S. IN MANUFACTURING ENGINEERING

    E-Print Network [OSTI]

    Berdichevsky, Victor

    Cr.) IE 6260: Quality Assurance and Control (2 Cr.) IE 6310: Lean Operations/Manufacturing (2 Cr.) IERev: Dec 6, 2012 PLAN OF WORK ­ M.S. IN MANUFACTURING ENGINEERING Specialization: Manufacturing POW 6420: Computer Aided Manufacturing (2 Cr.) IE 6421: Computer Aided Manufacturing Lab (2 Cr.,Prereq: ME

  4. Improving Alpha Spectrometry Energy Resolution by Ion Implantation with ICP-MS

    SciTech Connect (OSTI)

    Dion, Michael P.; Liezers, Martin; Farmer, Orville T.; Miller, Brian W.; Morley, Shannon M.; Barinaga, Charles J.; Eiden, Gregory C.

    2015-01-01

    We report results of a novel technique using an Inductively Coupled Plasma Mass Spectrometer (ICP-MS) as a method of source preparation for alpha spectrometry. This method produced thin, contaminant free 241Am samples which yielded extraordinary energy resolution which appear to be at the lower limit of the detection technology used in this research.

  5. Montana State University 1 M.S. in Psychology (with an

    E-Print Network [OSTI]

    Maxwell, Bruce D.

    Montana State University 1 M.S. in Psychology (with an emphasis on psychological science content areas, as well as with research methods and statistics in psychology. Courses we typically require Processes 3 PSYX 541 Cognitive Processes 3 PSYX 542 Learning 3 PSYX 543 Memory 3 PSYX 544 Social Psychology

  6. (MS WORD TEMPLATE for Submission in Fusion Engineering and Design) Security on the US Fusion Grid

    E-Print Network [OSTI]

    Thompson, Mary R.

    (MS WORD TEMPLATE for Submission in Fusion Engineering and Design) Security on the US Fusion Grid J, FusionGrid, grid computing 1. Introduction Critical to the success of any computational grid is security to improve security for the US Fusion Grid (FusionGrid) [1]. Collaboratory workers have adapted secure

  7. MS/NMR: A Structure-Based Approach for Discovering Protein Ligands and for Drug Design

    E-Print Network [OSTI]

    Powers, Robert

    MS/NMR: A Structure-Based Approach for Discovering Protein Ligands and for Drug Design by Coupling to evaluate ligand binding with an obvious utility in structure-based drug discovery and design.7-10 The "SAR to bind a target protein while obtaining structure-related information as part of a struc- ture-based drug

  8. Curriculum Vitae Georg H. Hoffstaetter Titles: Professor, habil., PhD, MS, Dipl. Phys.

    E-Print Network [OSTI]

    Hoffstaetter, Georg

    Collider Accel. Dev. '07- Associate Editor, Physical Review ST-AB '07-'08 Mem. APS Dev. of Physics of Beams Abitur in Germany, A/O Levels as head-boy in an English boarding school Darmstadt Univ. (TUD) Physics, Dipl. Phys. with honors '91, thesis with Prof. Harald Rose Michigan State Univ. (MSU) Physics, MS '92

  9. ENG BE/ME/MS 504: Polymers and Soft Materials GRS PY 744: Polymer Physics.

    E-Print Network [OSTI]

    Vajda, Sandor

    ENG BE/ME/MS 504: Polymers and Soft Materials GRS PY 744: Polymer Physics. Prof. Rama Bansil Class will be assumed. The course will not emphasize synthetic polymer chemistry. Practical applications of polymers of classes TEXT BOOKS Main Text Book: Required: Polymer Chemistry, 2nd Edition, Hiemenz and Lodge, CRC Press

  10. ECE 230A/B AP/EDM (Grad) MS Comprehensive Exam FA10

    E-Print Network [OSTI]

    Wang, Deli

    ECE 230A/B ­ AP/EDM (Grad) MS Comprehensive Exam FA10 Problem 1 For the 1-D Ga (everything else unchanged). (d) Replace the Si base with a uniform SiGe base of bandgap 0.1 eV smaller than that of Si (everything else unchanged). #12;

  11. Human Resources & Payroll 4400 University Drive, MS 3C3, Fairfax, Virginia 22030

    E-Print Network [OSTI]

    Human Resources & Payroll 4400 University Drive, MS 3C3, Fairfax, Virginia 22030 Phone: 703, are written at the beginning of the evaluation cycle to determine work plans and developmental needs. The evaluation cycle starts October 25 and ends October 24 of the following year. Updates to the EWP should

  12. Boston University -College of Engineering Course Number: EC/MS 573 Course Title: Solar Energy Systems

    E-Print Network [OSTI]

    , recombination and other losses, I-V characteristics, output power; 3) Single junction and triple-junction solar; 2) Solar cell properties and design; p-n junction photodiodes, depletion region, electrostatic field1 Boston University - College of Engineering Course Number: EC/MS 573 Course Title: Solar Energy

  13. Aggregate production: Fines generation during rock crushing M.S. Guimaraes a

    E-Print Network [OSTI]

    Palomino, Angelica M.

    Aggregate production: Fines generation during rock crushing M.S. Guimaraes a , J.R. Valdes b , A.M. Palomino c,, J.C. Santamarina d a Aalborg Portland, Denmark b Department of Civil and Environmental Eng; accepted 16 August 2006 Available online 25 September 2006 Abstract The energy required to crush rocks

  14. Centrifugal Pump for a 20-m/s, 1-cm-Diameter Mercury Jet

    E-Print Network [OSTI]

    McDonald, Kirk

    Centrifugal Pump for a 20-m/s, 1-cm-Diameter Mercury Jet Ernst de Haas, Kirk T. McDonald Joseph) centrifugal pump from R.S. Cor- coran, powered by a 20-hp, 480 V motor from Baldor. A photograph of this pump

  15. COAL RESOURCES, POWDER RIVER BASIN By M.S. Ellis,1

    E-Print Network [OSTI]

    Chapter PN COAL RESOURCES, POWDER RIVER BASIN By M.S. Ellis,1 G.L. Gunther,2 A.M. Ochs,2 S, Delaware 1999 Resource assessment of selected Tertiary coal beds and zones in the Northern Rocky in the toolbar to return. 1999 Resource assessment of selected Tertiary coal beds and zones in the Northern Rocky

  16. COAL RESOURCES OF THE HANNA AND CARBON By M.S. Ellis,1

    E-Print Network [OSTI]

    Chapter HN COAL RESOURCES OF THE HANNA AND CARBON BASINS By M.S. Ellis,1 G.L. Gunther,2 A.M. Ochs,2, Delaware 1999 Resource assessment of selected Tertiary coal beds and zones in the Northern Rocky in the toolbar to return. 1999 Resource assessment of selected Tertiary coal beds and zones in the Northern Rocky

  17. Microsymposium 34, MS065, 2001 PERMANENTLY SHADOWED AREAS AT THE LUNAR POLES. V. V. Shevchenko1

    E-Print Network [OSTI]

    Shevchenko, Vladislav

    Microsymposium 34, MS065, 2001 PERMANENTLY SHADOWED AREAS AT THE LUNAR POLES. V. V. Shevchenko1 , E a maximum of 1,95° above the horizon at the lunar poles. Therefore topographic depressions near the lunar poles may contain water ice deposits. We have used the Morphological catalogue of the craters

  18. MS Outlook 2010 Secure IMAP Configuration Settings for Windows-based PCs rriyo: 09/01/2011 Page 1

    E-Print Network [OSTI]

    Zhang, Yi

    MS Outlook 2010 Secure IMAP Configuration Settings for Windows-based PCs rriyo: 09/01/2011 Page 1 · This document was tested using MS Outlook 2010 using Windows 7 SP1 64-bit. Configuration settings may vary with other versions of Outlook and the Windows operating system. · When configuring your account settings

  19. DEVSJAVA: Basis for a DEVS-based Collaborative M&S Environment Hessam S. Sarjoughian & Bernard P. Zeigler

    E-Print Network [OSTI]

    Structure (SES), model simplification, model validation, simulation verification, and endomorphism. System, Simulation, System Theory, Web-enabled 1. INTRODUCTION Applications of Modeling and Simulation (M&S) span. The discipline of M&S has introduced fundamental concepts such as experimental frame, model-base, System Entity

  20. Simulating the FTICR-MS Signal of a Decaying Beryllium-7 Ion Plasma in a 2D Electrostatic PIC Code

    E-Print Network [OSTI]

    Hart, Gus

    Simulating the FTICR-MS Signal of a Decaying Beryllium-7 Ion Plasma in a 2D Electrostatic PIC Code the FTICR-MS Signal of a Decaying Beryllium-7 Ion Plasma in a 2D Electrostatic PIC Code Michael Takeshi Nakata Department of Physics and Astronomy Doctor of Philosophy Beryllium-7 (Be-7) only decays

  1. Using Entrez Utilities Web Service with C# and MS Visual Studio Entrez Utilities Web Service has been tested with

    E-Print Network [OSTI]

    Levin, Judith G.

    Using Entrez Utilities Web Service with C# and MS Visual Studio 2008 Entrez Utilities Web Service Version 9.0.30729.1 SP Creating a Web Service Client Project The following walkthrough describes how to create a new C# project to access the NCBI Entrez Utilities Web Service using MS Visual Studio 2008

  2. Permeability and wet-out characterization of SRIM automotive bumper beams 

    E-Print Network [OSTI]

    Morse, Christopher Todd

    1992-01-01

    types 0/CONTINUOUS HAT LAYERS (12 TOTAL) 0 DEGREE PLY MATERIAL ? TOW WEIGHT (YDS/?) LOOPS/ INCH TONS/ LOO P 0 DEG WEIGHT (OZ/YD 2) MAT TYPE NAT WEIGHT (OZ/YD"2) TOTAL LAYER WEIGHT ACTUAL STIFFNESS RATIO UO1 UO2 UO3 225 450... ACTUAL STIFFNES RATIO WOI WO2 WO3 W(N WO! 450 8 00 225 8 00 225 5 50 225 5 50 225 8 00 I 0 24 20 48 28 16 14 08 20 48 450 225 225 450 450 1 00 ! (Kl 4 50 4 50 7 00 3 84 7 68 I I 52 5 76 89( CO)J I fNUOUS CON( ll4UOUS LONI...

  3. Calculation of the thermodynamic properties of fuel-vapor species from spectroscopic data

    SciTech Connect (OSTI)

    Green, D.W.

    1980-09-01

    Measured spectroscopic data, estimated molecular parameters, and a densty-of-states model for electronic structure have been used to calculate thermodynamic functions for gaseous ThO, ThO/sub 2/, UO, UO/sub 2/, UO/sub 3/, PuO, and PuO/sub 2/. Various methods for estimating parameters have been considered and numerically evaluated. The sensitivity of the calculated thermodynamic functions to molecular parameters has been examined quantitatively. New values of the standard enthalpies of formation at 298.15/sup 0/K have been derived from the best available ..delta..G/sup 0//sub f/ equations and the calculated thermodynamic functions. Estimates of the uncertainties have been made for measured and estimated data as well as for various mathematical and physical approximations. Tables of the thermodynamic functions to 6000/sup 0/K are recommended for gaseous thorium, uranium, and plutonium oxides.

  4. Kinetics of laser pulse vaporization of uranium dioxide by mass spectrometry

    SciTech Connect (OSTI)

    Tsai, C.

    1981-11-01

    Safety analyses of nuclear reactors require knowledge of the evaporation behavior of UO/sub 2/ at temperatures well above the melting point of 3140 K. In this study, rapid transient heating of a small spot on a UO/sub 2/ specimen was accomplished by a laser pulse, which generates a surface temperature excursion. This in turn vaporizes the target surface and the gas expands into vacuum. The surface temperature transient was monitored by a fast-response automatic optical pyrometer. The maximum surface temperatures investigated range from approx. 3700 K to approx. 4300 K. A computer program was developed to simulate the laser heating process and calculate the surface temperature evolution. The effect of the uncertainties of the high temperature material properties on the calculation was included in a sensitivity study for UO/sub 2/ vaporization. The measured surface temperatures were in satisfactory agreements.

  5. Production of small uranium dioxide microspheres for cermet nuclear fuel using the internal gelation process

    SciTech Connect (OSTI)

    Collins, Robert T; Collins, Jack Lee; Hunt, Rodney Dale; Ladd-Lively, Jennifer L; Patton, Kaara K; Hickman, Robert

    2014-01-01

    The U.S. National Aeronautics and Space Administration (NASA) is developing a uranium dioxide (UO2)/tungsten cermet fuel for potential use as the nuclear cryogenic propulsion stage (NCPS). The first generation NCPS is expected to be made from dense UO2 microspheres with diameters between 75 and 150 m. Previously, the internal gelation process and a hood-scale apparatus with a vibrating nozzle were used to form gel spheres, which became UO2 kernels with diameters between 350 and 850 m. For the NASA spheres, the vibrating nozzle was replaced with a custom designed, two-fluid nozzle to produce gel spheres in the desired smaller size range. This paper describes the operational methodology used to make 3 kg of uranium oxide microspheres.

  6. Sources of Technical Variability in Quantitative LC-MS Proteomics: Human Brain Tissue Sample Analysis.

    SciTech Connect (OSTI)

    Piehowski, Paul D.; Petyuk, Vladislav A.; Orton, Daniel J.; Xie, Fang; Moore, Ronald J.; Ramirez Restrepo, Manuel; Engel, Anzhelika; Lieberman, Andrew P.; Albin, Roger L.; Camp, David G.; Smith, Richard D.; Myers, Amanda J.

    2013-05-03

    To design a robust quantitative proteomics study, an understanding of both the inherent heterogeneity of the biological samples being studied as well as the technical variability of the proteomics methods and platform is needed. Additionally, accurately identifying the technical steps associated with the largest variability would provide valuable information for the improvement and design of future processing pipelines. We present an experimental strategy that allows for a detailed examination of the variability of the quantitative LC-MS proteomics measurements. By replicating analyses at different stages of processing, various technical components can be estimated and their individual contribution to technical variability can be dissected. This design can be easily adapted to other quantitative proteomics pipelines. Herein, we applied this methodology to our label-free workflow for the processing of human brain tissue. For this application, the pipeline was divided into four critical components: Tissue dissection and homogenization (extraction), protein denaturation followed by trypsin digestion and SPE clean-up (digestion), short-term run-to-run instrumental response fluctuation (instrumental variance), and long-term drift of the quantitative response of the LC-MS/MS platform over the 2 week period of continuous analysis (instrumental stability). From this analysis, we found the following contributions to variability: extraction (72%) >> instrumental variance (16%) > instrumental stability (8.4%) > digestion (3.1%). Furthermore, the stability of the platform and its’ suitability for discovery proteomics studies is demonstrated.

  7. Evaluation of Ultra-Low Background Materials for Uranium and Thorium Using ICP-MS

    SciTech Connect (OSTI)

    Hoppe, Eric W.; Overman, Nicole R.; LaFerriere, Brian D.

    2013-08-08

    An increasing number of physics experiments require low background materials for their construction. The presence of Uranium and Thorium and their progeny in these materials present a variety of unwanted background sources for these experiments. The sensitivity of the experiments continues to drive the necessary levels of detection ever lower as well. This requirement for greater sensitivity has rendered direct radioassay impractical in many cases requiring large quantities of material, frequently many kilograms, and prolonged counting times, often months. Other assay techniques have been employed such as Neutron Activation Analysis but this requires access to expensive facilities and instrumentation and can be further complicated and delayed by the formation of unwanted radionuclides. Inductively Coupled Plasma Mass Spectrometry (ICP-MS) is a useful tool and recent advancements have increased the sensitivity particularly in the elemental high mass range of U and Th. Unlike direct radioassay, ICP-MS is a destructive technique since it requires the sample to be in liquid form which is aspirated into a high temperature plasma. But it benefits in that it usually requires a very small sample, typically about a gram. Here we will discuss how a variety of low background materials such as copper, polymers, and fused silica are made amenable to ICP-MS assay and how the arduous task of maintaining low backgrounds of U and Th is achieved.

  8. Diffusion and Adsorption of Uranyl Carbonate Species in Nanosized Mineral Fractures

    SciTech Connect (OSTI)

    Kerisit, Sebastien N.; Liu, Chongxuan

    2012-02-07

    Atomistic simulations were performed to study the diffusion and adsorption of Ca{sub 2}UO{sub 2}(CO{sub 3}){sub 3} and of some of its constituent species, i.e., UO{sub 2}{sup 2+}, CO{sub 3}{sup 2-}, and UO{sub 2}CO{sub 3}, in feldspar nano-sized fractures. Feldspar is important to uranium remediation efforts at the U.S. Department of Energy Hanford site as it has been found in recent studies to host contaminants within its intragrain fractures. In addition, uranyl carbonate species are known to dominate U(VI) speciation in conditions relevant to the Hanford site. Molecular dynamics (MD) simulations showed that the presence of the feldspar surface diminishes the diffusion coefficients of all the species considered in this work and that the diffusion coefficients do not reach their bulk aqueous solution values in the center of a 2.5 nm fracture. Moreover, the MD simulations showed that the rate of decrease in the diffusion coefficients with decreasing distance from the surface is greater for larger adsorbing species. Free energy profiles of the same species adsorbing on the feldspar surface revealed a large exothermic free energy of adsorption for UO{sub 2}{sup 2+} and UO{sub 2}CO{sub 3}, which are able to adsorb to the surface with their uranium atom directly bonded to a surface hydroxyl oxygen, whereas adsorption of CO{sub 3}{sup 2-} and Ca{sub 2}UO{sub 2}(CO{sub 3}){sub 3}, which attach to the surface via hydrogen bonding from a surface hydroxyl group to a carbonate oxygen, was calculated to be either only slightly exothermic or endothermic.

  9. Source term evaluation for postulated UF{sub 6} release accidents in gaseous diffusion plants -- Summer ventilation mode (non-seismic cases)

    SciTech Connect (OSTI)

    Kim, S.H.; Chen, N.C.J.; Taleyarkhan, R.P.; Wendel, M.W.; Keith, K.D.; Schmidt, R.W. [Oak Ridge National Lab., TN (United States); Carter, J.C. [J.C. Carter Associates, Inc., Knoxville, TN (United States); Dyer, R.H. [Dyer Enterprises, Harriman, TN (United States)

    1996-12-30

    Computer models have been developed to simulate the transient behavior of aerosols and vapors as a result of a postulated accident involving the release of uranium hexafluoride (UF{sub 6}) into the process building of a gaseous diffusion plant. For the current study, gaseous UF{sub 6} is assumed to get released in the cell housing atmosphere through B-line break at 58.97 kg/s for 10 min and 30 min duration at the Paducah and Portsmouth Gaseous Diffusion Plants. The released UF{sub 6} undergoes an exothermic chemical reaction with moisture (H{sub 2}O) in the air to form hydrogen fluoride (HF) and radioactive uranyl fluoride (UO{sub 2}F{sub 2}) while it disperses throughout the process building. As part of a facility-wide safety evaluation, this study evaluated source terms consisting of UO{sub 2}F{sub 2} as well as HF during a postulated UF{sub 6} release accident in a process building. UO{sub 2}F{sub 2} mainly remains as airborne-solid particles (aerosols), and HF is in a vapor form. Some UO{sub 2}F{sub 2} aerosols are removed from the air flow due to gravitational settling. The HF and the remaining UO{sub 2}F{sub 2} are mixed with air and exhausted through the building ventilation system. The MELCOR computer code was selected for simulating aerosols and vapor transport in the process building. To characterize leakage flow through the cell housing wall, 3-D CFD tool (CFDS-FLOW3D) was used. About 57% of UO{sub 2}F{sub 2} was predicted to be released into the environment. Since HF was treated as vapor, close to 100% was estimated to get released into the environment.

  10. Characterization of Zr-Fe-Cu Alloys for an Inert Matrix Fuel for Nuclear Energy Applications 

    E-Print Network [OSTI]

    Barnhart, Brian A.

    2013-08-09

    Spectroscopy EPMA Electron Probe Microanalyzer FCCI Fuel Clad Chemical Interaction FCMI Fuel Clad Mechanical Interaction IMF Inert Matrix Fuel LFA Light Flash Analysis LLNL Lawrence Livermore National Lab LWR Light Water Reactor MRF Materials... it appealing for use in a nuclear reactor. The UO2 crystal has a fluorite structure of the CaF2 type. At beginning of life (BOL), UO2 is manufactured to be as pure as possible; as such when it is loaded into the fuel bundles it is a single phase and has...

  11. Time-Resolved Infrared Reflectance Studies of the Dehydration-Induced Transformation of Uranyl Nitrate Hexahydrate to the Trihydrate Form

    SciTech Connect (OSTI)

    Johnson, Timothy J.; Sweet, Lucas E.; Meier, David E.; Mausolf, Edward J.; Kim, Eunja; Weck, Philippe F.; Buck, Edgar C.; McNamara, Bruce K.

    2015-10-01

    Uranyl nitrate is a key species in the nuclear fuel cycle. However, this species is known to exist in different states of hydration, including the hexahydrate ([UO2(NO3)2(H2O)6] often called UNH), the trihydrate [UO2(NO3)2(H2O)3 or UNT], and in very dry environments the dihydrate form [UO2(NO3)2(H2O)2]. Their relative stabilities depend on both water vapor pressure and temperature. In the 1950s and 1960s the different phases were studied by infrared transmission spectroscopy, but were limited both by instrumental resolution and by the ability to prepare the samples for transmission. We have revisited this problem using time-resolved reflectance spectroscopy, which requires no sample preparation and allows dynamic analysis while the sample is exposed to a flow of N2 gas. Samples of known hydration state were prepared and confirmed via X-ray diffraction patterns of known species. In reflectance mode the hexahydrate UO2(NO3)2(H2O)6 has a distinct uranyl asymmetric stretch band at 949.0 cm-1 that shifts to shorter wavelengths and broadens as the sample desiccates and recrystallizes to the trihydrate, first as a shoulder growing in on the blue edge but ultimately results in a doublet band with reflectance peaks at 966 and 957 cm-1. The data are consistent with transformation from UNH to UNT as UNT has two inequivalent UO22+ sites. The dehydration of UO2(NO3)2(H2O)6 to UO2(NO3)2(H2O)3 is both a structural and morphological change that has the lustrous lime green UO2(NO3)2(H2O)6 crystals changing to the matte greenish yellow of the trihydrate solid. The phase transformation and crystal structures were confirmed by density functional theory calculations and optical microscopy methods, both of which showed a transformation with two distinct sites for the uranyl cation in the trihydrate, with but one in the hexahydrate.

  12. Trend of Taxes on Agricultural Land in Texas and Distribution of the Farmer's Tax Dollar. 

    E-Print Network [OSTI]

    Buechel, F. A. (Frederick Anthony)

    1925-01-01

    cooperation. The officers of more than one hundred and seventy-five coun- ties responded to the questionnaire with all or part of the information de- sired. It is a source of deep regret to the writer that out of this number, ;he data from only one hundred... pap1 uoyqxodoxd ayq pus xaaX quanbasqns Aue u~ usyq 7161 U! xa~sax3 sea sasodxnd Aqunoa XOJ parha1 uo~podoxd ay& -uo~qsxapysuo:, xapun xaafi y3sa JOJ passaxau! 'qunourz? aqnlosqa ayq se IIaM ss sq3rxqsIp pa01 Aq parha1 xsq p?qo? ayq jo uorpodoxd ayq...

  13. Measuring the Noble Metal and Iodine Composition of Extracted Noble Metal Phase from Spent Nuclear Fuel Using Instrumental Neutron Activation Analysis

    SciTech Connect (OSTI)

    Palomares, R. I.; Dayman, Kenneth J.; Landsberger, Sheldon; Biegalski, Steven R.; Soderquist, Chuck Z.; Casella, Amanda J.; Brady Raap, Michaele C.; Schwantes, Jon M.

    2015-04-01

    Mass quantities of noble metal and iodine nuclides in the metallic noble metal phase extracted from spent fuel are measured using instrumental neutron activation analysis (NAA). Nuclide presence is predicted using fission yield analysis, and mass quantification is derived from standard gamma spectroscopy and radionuclide decay analysis. The nuclide compositions of noble metal phase derived from two dissolution methods, UO2 fuel dissolved in nitric acid and UO2 fuel dissolved in ammonium-carbonate and hydrogen-peroxide solution, are compared. Lastly, the implications of the rapid analytic speed of instrumental NAA are discussed in relation to potential nuclear forensics applications.

  14. Effects of Time, Heat, and Oxygen on K Basin Sludge Agglomeration, Strength, and Solids Volume

    SciTech Connect (OSTI)

    Delegard, Calvin H.; Sinkov, Sergey I.; Schmidt, Andrew J.; Daniel, Richard C.; Burns, Carolyn A.

    2011-01-04

    Sludge disposition will be managed in two phases under the K Basin Sludge Treatment Project. The first phase is to retrieve the sludge that currently resides in engineered containers in the K West (KW) Basin pool at ~10 to 18°C. The second phase is to retrieve the sludge from interim storage in the sludge transport and storage containers (STSCs) and treat and package it in preparation for eventual shipment to the Waste Isolation Pilot Plant. The work described in this report was conducted to gain insight into how sludge may change during long-term containerized storage in the STSCs. To accelerate potential physical and chemical changes, the tests were performed at temperatures and oxygen partial pressures significantly greater than those expected in the T Plant canyon cells where the STSCs will be stored. Tests were conducted to determine the effects of 50°C oxygenated water exposure on settled quiescent uraninite (UO2) slurry and a full simulant of KW containerized sludge to determine the effects of oxygen and heat on the composition and mechanical properties of sludge. Shear-strength measurements by vane rheometry also were conducted for UO2 slurry, mixtures of UO2 and metaschoepite (UO3•2H2O), and for simulated KW containerized sludge. The results from these tests and related previous tests are compared to determine whether the settled solids in the K Basin sludge materials change in volume because of oxidation of UO2 by dissolved atmospheric oxygen to form metaschoepite. The test results also are compared to determine if heating or other factors alter sludge volumes and to determine the effects of sludge composition and settling times on sludge shear strength. It has been estimated that the sludge volume will increase with time because of a uranium metal ? uraninite ? metaschoepite oxidation sequence. This increase could increase the number of containers required for storage and increase overall costs of sludge management activities. However, the volume might decrease because of decreases in the water-volume fraction caused by sludge solid reactions, compaction, or intergrowth and recrystallization of metaschoepite. In that case, fewer STSCs may be needed, but the shear strength would increase, and this could challenge recovery by water jet erosion and require more aggressive retrieval methods. Overall, the tests described herein indicate that the settled solids volume remains the same or decreases with time. The only case for which the sludge solids volumes increase with time is for the expansion factor attendant upon the anoxic corrosion of uranium metal to produce UO2 and subsequent reaction with oxygen to form equimolar UO2.25 and UO3•2H2O.

  15. "Development of an Integrated EMSL MS and NMR Metabolic Flux Analysis Capability In Support of Systems Biology

    E-Print Network [OSTI]

    fluxes using stable isotope labeling and either nuclear magnetic resonance (NMR) or mass spectrometry (MS research in systems biology and metabolic engineering. It will allow us to provide a complete package

  16. Alignment of protein sequences by their profiles MARC A. MARTI-RENOM, M.S. MADHUSUDHAN, AND ANDREJ SALI

    E-Print Network [OSTI]

    Sali, Andrej

    Alignment of protein sequences by their profiles MARC A. MARTI-RENOM, M.S. MADHUSUDHAN, AND ANDREJ in the data- base. A multiple sequence alignment can also be trans- Reprint requests to: Marc A. Marti

  17. M.S. Economic Geology, Oregon State University College of Earth, Ocean, and Atmospheric Sciences, Corvallis, OR Expected Spring, 2015

    E-Print Network [OSTI]

    Kurapov, Alexander

    EDUCATION M.S. Economic Geology, Oregon State University College of Earth, Ocean. Dilles Relevant Courses Interpretation of Geologic Maps Igneous Petrology Tectonic Geomorphology B.S. Geology, University of Idaho College of Science, Moscow, ID; GPA: 3

  18. Refinement of ptr-ms methodology and application to the measurement of (o)vocs from cattle slurry. 

    E-Print Network [OSTI]

    House, Emily

    2009-01-01

    product distributions is applied to identify possible contributors to m/z observed during PTR-MS measurements of emission from cattle slurry. Field measurements were made during fertilisation of a grassland site south of Edinburgh in 2004 and 2005...

  19. The effect of laser pulse duration on ICP-MS signal intensity, elemental fractionation, and detection limits

    E-Print Network [OSTI]

    Harilal, S. S.

    and alloys,7,8 geology,9 archaeology,6,10 biological samples,11 radioactive waste anal- ysis,9 etc-stoichiometric ICP-MS results, can occur during laser ablation, during transport from the ablation chamber to the ICP

  20. Market Research Survey of Commercial Off-The-Shelf (COTS) Portable MS Systems for IAEA Safeguards Applications

    SciTech Connect (OSTI)

    Hart, Garret L.; Hager, George J.; Barinaga, Charles J.; Duckworth, Douglas C.

    2013-02-01

    This report summarizes the results for the market research survey of mass spectrometers that are deemed pertinent to International Atomic Energy Agency (IAEA) needs and strategic objectives. The focus of the report is on MS instruments that represent currently available (or soon to be) commercial off-the shelf (COTS) technology and weigh less than 400 pounds. A compilation of all available MS instruments (36 COTS and 2 R&D) is presented, along with pertinent information regarding each instrument.

  1. Ms. Judy Clayton, Chair Paducah Citizens Advisory Board EHI Consultants, Inc.

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (BillionProvedTravelInformation Resources»Jim1 ENVIRONMENTALPotomacRobert G. 0 Ms. Judy Clayton,

  2. Ms. Chris Andres, Chief Bureau of Federal Facilities Division of Environmental Protection

    Office of Legacy Management (LM)

    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 Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE-SessionsSouthReport for the Weldon Spring,7=cr5rnP 7694 i+lJ ,E-23 Mr.TimMs.

  3. File:USDA-CE-Production-GIFmaps-MS.pdf | 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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History View New Pages RecentTempCampApplicationWorksheet 2011.pdf JumpTransmissionKY.pdf JumpMN.pdfMS.pdf

  4. Development of chiral LC-MS methods for small molecules and their applications i

    Office of Scientific and Technical Information (OSTI)

    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 Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield MunicipalTechnical Report:Speeding accessby aLED Street Lighting Host Site: City ofNovel COchiral LC-MS

  5. Ms Linda Cerrone | U.S. DOE Office of Science (SC)

    Office of Science (SC) Website

    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 Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust,Field-effectWorkingLosThe 26thIWalter H.4 » Inside Ice Under2ScienceStudentsMs. Linda

  6. Ms Rocio Meneses | U.S. DOE Office of Science (SC)

    Office of Science (SC) Website

    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 Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust,Field-effectWorkingLosThe 26thIWalter H.4 » Inside Ice Under2ScienceStudentsMs.

  7. Ms Van T Nguyen | U.S. DOE Office of Science (SC)

    Office of Science (SC) Website

    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 Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust,Field-effectWorkingLosThe 26thIWalter H.4 » Inside Ice Under2ScienceStudentsMs.Van T

  8. Ms. Brenda Edwards U.S. Department of Energy, Buildings Technology Program

    Energy Savers [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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on DeliciousMathematicsEnergyInterested Parties -Department of Energy MoratoriumMoving Forward on CCS1,8, 2013 Ms.

  9. Detailed lensing properties of the MS2137-2353 core and reconstruction of sources

    E-Print Network [OSTI]

    Hammer, F; Shaya, E J; Gioia, I M; Luppino, G A; Lefèvre, O

    1996-01-01

    A deep HST image of the MS 2137-2353 core has revealed detailed morphological structures in two arc systems, which are modelled and well reproduced after a complete analysis of the lensing properties of the dark matter component. Latter could have a simple elliptical mass distribution with ellipticity and angular orientation similar to those of the visible and X-ray light, which suggests that the MS 2137-2353 is a relaxed cluster at z=0.313. The predicted density profile ($\\rho$ $\\sim$ $r^{-1.56\\pm0.1}$ with $r_{c}$ $\\le$ 22.5$h_{50}^{-1}$ kpc) within 150$h_{50}^{-1}$ kpc implies increasing M/L ratio with the radius, and could be in agreement with predictions from standard CDM simulations. At least two faint sources (unlensed magnitude, R=23.9 and 26, respectively) are aligned with the cluster core and are responsible of the arc systems. They have been reconstructed with details as small as 0".02 (or 160$h_{50}^{-1}$ pc in the source assumed at z= 1), one could be a nearly edge-on barred spiral galaxy, and th...

  10. Profiling of Adrenocorticotropic Hormone and Arginine Vasopressin in Human Pituitary Gland and Tumor Thin Tissue Sections using Droplet-Based Liquid Microjunction Surface Sampling-HPLC-ESI-MS/MS

    SciTech Connect (OSTI)

    Kertesz, Vilmos; Van Berkel, Gary J; Calligaris, David; Feldman, Daniel R; Changelian, Armen; Laws, Edward R; Santagata, Sandro; Agar, Nathalie YR

    2015-01-01

    Described here are the results from the profiling of the proteins arginine vasopressin (AVP) and adrenocorticotropic hormone (ACTH) from normal human pituitary gland and pituitary adenoma tissue sections using a fully automated droplet-based liquid microjunction surface sampling-HPLC-ESI-MS/MS system for spatially resolved sampling, HPLC separation, and mass spectral detection. Excellent correlation was found between the protein distribution data obtained with this droplet-based liquid microjunction surface sampling-HPLC-ESI-MS/MS system and those data obtained with matrix assisted laser desorption ionization (MALDI) chemical imaging analyses of serial sections of the same tissue. The protein distributions correlated with the visible anatomic pattern of the pituitary gland. AVP was most abundant in the posterior pituitary gland region (neurohypophysis) and ATCH was dominant in the anterior pituitary gland region (adenohypophysis). The relative amounts of AVP and ACTH sampled from a series of ACTH secreting and non-secreting pituitary adenomas correlated with histopathological evaluation. ACTH was readily detected at significantly higher levels in regions of ACTH secreting adenomas and in normal anterior adenohypophysis compared to non-secreting adenoma and neurohypophysis. AVP was mostly detected in normal neurohypophysis as anticipated. This work demonstrates that a fully automated droplet-based liquid microjunction surface sampling system coupled to HPLC-ESI-MS/MS can be readily used for spatially resolved sampling, separation, detection, and semi-quantitation of physiologically-relevant peptide and protein hormones, such as AVP and ACTH, directly from human tissue. In addition, the relative simplicity, rapidity and specificity of the current methodology support the potential of this basic technology with further advancement for assisting surgical decision-making.

  11. Pentaerythritol Tetranitrate (PETN) Surveillance by HPLC-MS: Instrumental Parameters Development

    SciTech Connect (OSTI)

    Harvey, C A; Meissner, R

    2005-11-04

    Surveillance of PETN Homologs in the stockpile here at LLNL is currently carried out by high performance liquid chromatography (HPLC) with ultra violet (UV) detection. Identification of unknown chromatographic peaks with this detection scheme is severely limited. The design agency is aware of the limitations of this methodology and ordered this study to develop instrumental parameters for the use of a currently owned mass spectrometer (MS) as the detection system. The resulting procedure would be a ''drop-in'' replacement for the current surveillance method (ERD04-524). The addition of quadrupole mass spectrometry provides qualitative identification of PETN and its homologs (Petrin, DiPEHN, TriPEON, and TetraPEDN) using a LLNL generated database, while providing mass clues to the identity of unknown chromatographic peaks.

  12. Mass Spectrometry Data from the Biological MS Data and Software Distribution Center

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

    Anderson, Gordon

    The mass spectrometry capabilities at Pacific Northwest National Laboratory (PNNL) are primarily applied to biological research, with an emphasis on proteomics and metabolomics. Many of these cutting-edge mass spectrometry capabilities and bioinformatics methods are housed in the Department of Energy's Environmental Molecular Sciences Laboratory (EMSL), a national scientific user facility operated by PNNL. These capabilities have been developed and acquired through cooperation between the EMSL national scientific user program and PNNL programmatic research. At the website of the Biological MS Data and Software Distribution Center, the following resources are made available: PNNL-developed software tools and source code, PNNL-generated raw data and processed results, links to publications that used the data and results available on this site, and tutorials and user manuals. [taken from http://omics.pnl.gov/

  13. Studies on the content of heavy metals in Aries River using ICP-MS

    SciTech Connect (OSTI)

    Voica, Cezara Kovacs, Melinda Feher, Ioana

    2013-11-13

    Among the industrial branches, the mining industry has always been an important source of environmental pollution, both aesthetically and chemically. Through this paper results of ICP-MS characterization of Aries River Basin are reported. Mining activities from this area has resulted in contamination of environment and its surrounding biota. This is clearly evidenced in analyzed water samples, especially from Baia de Aries site where increased amount of trace elements as Cr, Zn, As, Se, Cd, Pb and U were founded. Also in this site greater amount of rare earth elements was evidenced also. Through monitoring of Aries River from other non-mining area it was observed that the quantitative content of heavy metals was below the maximum permissible levels which made us to conclude that the water table wasn't seriously affected (which possibly might be attributed to the cessation of mining activities in this area from a few years ago)

  14. Application of Printed Circuit Board Technology to FT-ICR MS Analyzer Cell Construction and Prototyping

    SciTech Connect (OSTI)

    Leach, Franklin E.; Norheim, Randolph V.; Anderson, Gordon A.; Pasa-Tolic, Ljiljana

    2014-12-01

    Although Fourier transform ion cyclotron resonance mass spectrometry (FT-ICRMS) remains themass spectrometry platform that provides the highest levels of performance for mass accuracy and resolving power, there is room for improvement in analyzer cell design as the ideal quadrupolar trapping potential has yet to be generated for a broadband MS experiment. To this end, analyzer cell designs have improved since the field’s inception, yet few research groups participate in this area because of the high cost of instrumentation efforts. As a step towards reducing this barrier to participation and allowing for more designs to be physically tested, we introduce a method of FT-ICR analyzer cell prototyping utilizing printed circuit boards at modest vacuum conditions. This method allows for inexpensive devices to be readily fabricated and tested over short intervals and should open the field to laboratories lacking or unable to access high performance machine shop facilities because of the required financial investment.

  15. Separation of Yeast Cells from MS2 Viruses Using Acoustic Radiation Force

    SciTech Connect (OSTI)

    Jung, B; Fisher, K; Ness, K; Rose, K A; Mariella, Jr., R P

    2008-03-27

    We report a rapid and robust separation of Saccharomyces cerevisiae and MS2 bacteriophage using acoustic focusing in a microfluidic device. A piezoelectric transducer (PZT) generates acoustic standing waves in the microchannel. These standing waves induce acoustic radiation force fields that direct microparticles towards the nodes (i.e., pressure minima) or the anti-nodes (i.e., pressure maxima) of the standing waves depending on the relative compressidensity between the particle and the suspending liquid.[1] For particles larger than 2 {micro}m, the transverse velocities generated by these force fields enable continuous, high throughput separation. Extensive work in the last decade [2-4] has demonstrated acoustic focusing for manipulating microparticles or biological samples in microfluidic devices. This prior work has primarily focused on experimental realization of acoustic focusing without modeling or with limited one-dimensional modeling estimates. We recently developed a finite element modeling tool to predict the two-dimensional acoustic radiation force field perpendicular to the flow direction in microfluidic devices.[1] Here we compare results from this model with experimental parametric studies including variations of the PZT driving frequencies and voltages as well as various particle sizes and compressidensities. These experimental parametric studies also provide insight into the development of an adjustable 'virtual' pore-size filter as well as optimal operating conditions for various microparticle sizes. Figure 1 shows a typical experimental acoustic focusing result for microparticles (diameter = 2.0 {micro}m) in a 500 {micro}m wide by 200 {micro}m deep microchannel. In this case, the PZT driving frequency and voltage are, respectively, 1.459 MHz and 6.6 V. The microparticles tightly focus (full width half maximum (FWHM) {approx}30 {micro}m) less than 30 s after the initiation of the acoustic field. We simulated the same geometry and operating conditions for comparison. The surface plot in Figure 2 illustrates the two-dimensional pressure field orthogonal to the flow direction (x-direction) from the simulation. The superimposed vector plot shows the acoustic radiation force in this plane. The dark regions and the light regions respectively represent the nodes and anti-nodes of the acoustic pressure field. The corresponding force field predicts acoustic focusing at the center of the microchannel, which is confirmed by the experimental results shown in Figure 1. We demonstrated the separation of Saccharomyces cerevisiae (typical cell size of 4-6 {micro}m depending on the cell growth stage, measured using a Coulter counter) and MS2 bacteriophage (typical diameter {approx}30 nm [5]) using acoustic focusing (Figure 3). A mixture of S. cerevisiae and MS2 labeled with Ribogreen was prepared and injected into one inlet of the microchip (i.e., half of the microchannel was filled with the sample). We varied driving voltages from 1.96 to 4.76 V, while fixing the driving frequency at 1.459 MHz and flow rate at 20 {micro}l/min. The acoustic radiation force did not affect the MS2 viruses, and their concentration profile remained unchanged. Increased driving voltages enhanced the acoustic focusing of the yeast cells thereby achieving good separation. We are able to achieve yields of > 80% and sample purities of > 90% in this continuous-flow sample preparation device.

  16. MS Degree in Mechanical Engineering, King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia, April 2006. Grade Point Average 3.34/4.00. MS Thesis on "The Effect

    E-Print Network [OSTI]

    Williams, John M.

    EDUCATION · MS Degree in Mechanical Engineering, King Fahd University of Petroleum and Minerals Thermoset Pipes Carrying Crude Oil". · B.E. in Mechanical Engineering (1st Division with Distinction 2003 April 2006: Research Assistant, Department of Mechanical Engineering, King Fahd University

  17. The West Virginia University College of Engineering and Mineral Resources has seven academic departments with undergraduate and graduate (M.S. and Ph.D.)

    E-Print Network [OSTI]

    Mohaghegh, Shahab

    D · Occupational Safety & Health.. PhD · Petroleum & Natural Gas Engineering ............................. BS / MS, dealing with important issues in homeland security. Major Research Areas · Advanced Materials · Alternate

  18. This journal is c The Royal Society of Chemistry 2010 Chem. Commun., 2010, 46, 91679169 9167 Cubic and rhombohedral heterobimetallic networks constructed from

    E-Print Network [OSTI]

    in the nuclear fuel cycle. U(VI) is typically found in the form of a linear UO2 2+ cation, called uranyl, and four to six additional donor atoms are usually found perpendicular to the uranyl axis yielding of the common oxoanions have been used to bind uranyl, and large families of uranyl oxoanion compounds are now

  19. Reduction and desymmetrisation of the uranyl dication in a macrocyclic framework 

    E-Print Network [OSTI]

    Patel, Dipti

    The transamination reaction between a Schiff base polypyrrolic macrocycle, H4Ltet/oct, where tet = tetramethyl (C38H36N8), oct = octamethyl (C42H44N8), and [UO2(THF)2{N(SiMe3)2}] results in the sole formation of mono ...

  20. Subscriber access provided by Caltech Library Services The Journal of Physical Chemistry A is published by the American Chemical

    E-Print Network [OSTI]

    Goddard III, William A.

    Addition of H 2 O and O 2 to Acetone and Dimethylsulfoxide Ligated Uranyl(V) Dioxocations Christopher M;Addition of H2O and O2 to Acetone and Dimethylsulfoxide Ligated Uranyl(V) Dioxocations Christopher M to form the reduced uranyl cation UO2 + , formally a U(V) species.8 A similar reaction of U2+ with O2

  1. Available at www.sciencedirect.com journal homepage: www.elsevier.com/locate/watres

    E-Print Network [OSTI]

    Burgos, William

    in revised form 3 April 2006 Accepted 5 April 2006 Available online 14 June 2006 Keywords: Solubility Uranyl as uranyl (UO2 2+ ) for acidic condi- tions, and forms hydroxyl and carbonato complexes with increasing p and Grambow, 1998), sorption of uranyl on geological materials (Hsi and Langmuir, 1985; Silva, 1992; Waite et

  2. Radiation Measurements 42 (2007) 10291032 www.elsevier.com/locate/radmeas

    E-Print Network [OSTI]

    2007-01-01

    M) of two uranyl nitrate compounds that have different uranium isotopic concentrations and cells were exposed to either 238U-uranyl nitrate, specific activity 0.33 Ci/g, or DU-uranyl nitrate similar Abbreviations: DU, Depleted uranium; V79, Chinese hamster lung cells; DU-UO2NO3 depleted uranium-uranyl

  3. Journal of Colloid and Interface Science 299 (2006) 4955 www.elsevier.com/locate/jcis

    E-Print Network [OSTI]

    Montes-Hernandez, German

    2006-01-01

    to the removal of uranyl ion (UO2+ 2 ) from aqueous solutions onto synthetic manganese oxide (birnessite-squares method. For initial concentration range 0.2­11.8 µM, the results showed that the uranyl removal process and thermodynamic parameters were calculated, such as maximal removed quantity of uranyl, qr,max, half-removal time

  4. Present address: Department of Geology, 245 Natural History Building, University of Illinois, 1301 W. Green Street, Urbana, Illinois 61801, U.S.A. E-mail address: jmjackso@uiuc.edu.

    E-Print Network [OSTI]

    Jackson, Jennifer M.

    Mineralogist Vol. 39, pp. 187-195 (2001) A RE-EVALUATION OF THE STRUCTURE OF WEEKSITE, A URANYL SILICATE, each of which is part of a nearly linear (UO2)2+ uranyl ion. The uranyl ions (Ur) are further. There are ten silicon atoms, each of which is tetrahedrally coordinated by oxygen atoms. The uranyl polyhedra

  5. Developing a High Thermal Conductivity Fuel with Silicon Carbide Additives

    SciTech Connect (OSTI)

    baney, Ronald; Tulenko, James

    2012-11-20

    The objective of this research is to increase the thermal conductivity of uranium oxide (UO{sub 2}) without significantly impacting its neutronic properties. The concept is to incorporate another high thermal conductivity material, silicon carbide (SiC), in the form of whiskers or from nanoparticles of SiC and a SiC polymeric precursor into UO{sub 2}. This is expected to form a percolation pathway lattice for conductive heat transfer out of the fuel pellet. The thermal conductivity of SiC would control the overall fuel pellet thermal conductivity. The challenge is to show the effectiveness of a low temperature sintering process, because of a UO{sub 2}-SiC reaction at 1,377°C, a temperature far below the normal sintering temperature. Researchers will study three strategies to overcome the processing difficulties associated with pore clogging and the chemical reaction of SiC and UO{sub 2} at temperatures above 1,300°C:

  6. Computer modeling of the spallation process 

    E-Print Network [OSTI]

    Walker, Wayne Claire

    1978-01-01

    that classically the particle hitting the nucleus is ab- sorbed, thon the cross section for the roverse process becomes c(EA, e) = ao(l ? V/c) for c & V (63) 0 fore &V where uo = sr and V = zz, e /r. The Coulomb field is expressed in terms of. the charge, ze...

  7. UNIVERSITY OF WASHINGTON PERSONAL DATA FORM

    E-Print Network [OSTI]

    Matrajt, Graciela

    UNIVERSITY OF WASHINGTON PERSONAL DATA FORM Name of Employee (Last, First, M.I.) Student Number (If to print this information in the directory? Yes No (County) UoW 1354 (8/01) Contact's Day Phone Contact (e.g. Dr. of Education, Dr. of Science) Employee's Signature Date *The University has requested your

  8. UNIVERSITY OF WASHINGTON PERSONAL DATA FORM

    E-Print Network [OSTI]

    Shlizerman, Eli

    UNIVERSITY OF WASHINGTON PERSONAL DATA FORM DEPARTMENT OF BIOLOGY Name of Employee (Last, First, M Is it okay to print this information in the directory? Yes No (County) UoW 1354 (10/00) Contact's Day Phone (e.g. Dr. of Education, Dr. of Science) Employee's Signature Date *The University has requested your

  9. Water-Moderated and -Reflected Slabs of Uranium Oxyfluoride

    SciTech Connect (OSTI)

    Margaret A. Marshall; John D. Bess; J. Blair Briggs; Clinton Gross

    2010-09-01

    A series of ten experiments were conducted at the Oak Ridge National Laboratory Critical Experiment Facility in December 1955, and January 1956, in an attempt to determine critical conditions for a slab of aqueous uranium oxyfluoride (UO2F2). These experiments were recorded in an Oak Ridge Critical Experiments Logbook and results were published in a journal of the American Nuclear Society, Nuclear Science and Engineering, by J. K. Fox, L. W. Gilley, and J. H. Marable (Reference 1). The purpose of these experiments was to obtain the minimum critical thickness of an effectively infinite slab of UO2F2 solution by extrapolation of experimental data. To do this the slab thickness was varied and critical solution and water-reflector heights were measured using two different fuel solutions. Of the ten conducted experiments eight of the experiments reached critical conditions but the results of only six of the experiments were published in Reference 1. All ten experiments were evaluated from which five critical configurations were judged as acceptable criticality safety benchmarks. The total uncertainty in the acceptable benchmarks is between 0.25 and 0.33 % ?k/keff. UO2F2 fuel is also evaluated in HEU-SOL-THERM-043, HEU-SOL-THERM-011, and HEU-SOL-THERM-012, but these those evaluation reports are for large reflected and unreflected spheres. Aluminum cylinders of UO2F2 are evaluated in HEU-SOL-THERM-050.

  10. The United States Department of Energy (DOE) has always held the safety and reliability of the nation's nuclear reactor fleet as a top priority. Continual improvements and advancements in nuclear fuels have

    E-Print Network [OSTI]

    of the nation's nuclear reactor fleet as a top priority. Continual improvements and advancements in nuclear fuels have been instrumental in maximizing energy generation from nuclear power plants and minimizing the mechanical properties of uranium dioxide (UO2) for nuclear fuel applications. In an effort to improve

  11. Development of a RELAP5-3D three-dimensional model of a VVER-1000 Nuclear Power Plant for analysis of a large-break loss-of-coolant accident 

    E-Print Network [OSTI]

    Clarno, Kevin Taylor

    2001-01-01

    large-break loss-of-coolant accident (LB LOCA). A validated, one-dimensional control of the nuclear power plant, for the study of the effects of mixed oxide (MOX) fuel, was modified to include a standard fuel loading of UO?. The development...

  12. Molecular EcologY 7996'5' 45A57 TECHNICAL NOT E

    E-Print Network [OSTI]

    Marsh, Helene

    S H T ZoologyDepartment,lamesCookUniaersityofNorthQueensland,Townsaille,NorthQueensland,48L1,Australia was phenol/chloroform extracted (Sambrook et al. 1989), followed by ethanol precipitation (Crouse & Amorese, Brisbane,Queensland,4059,Australia. Tel.: + 61.7 38372989. E-mail: D.Tikel@mailbox.uo.edu.au @ Pge

  13. CX-011566: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Mechanical Behavior of Uranium Oxide (UO2) at Sub-grain Length Scales: Quantification of Elastic, Plastic and Creep Properties via Microscale Testing CX(s) Applied: B3.6 Date: 11/18/2013 Location(s): Arizona Offices(s): Idaho Operations Office

  14. Green strength of zirconium sponge and uranium dioxide powder compacts

    SciTech Connect (OSTI)

    Balakrishna, Palanki Murty, B. Narasimha; Sahoo, P.K.; Gopalakrishna, T.

    2008-07-15

    Zirconium metal sponge is compacted into rectangular or cylindrical shapes using hydraulic presses. These shapes are stacked and electron beam welded to form a long electrode suitable for vacuum arc melting and casting into solid ingots. The compact electrodes should be sufficiently strong to prevent breakage in handling as well as during vacuum arc melting. Usually, the welds are strong and the electrode strength is limited by the green strength of the compacts, which constitute the electrode. Green strength is also required in uranium dioxide (UO{sub 2}) powder compacts, to withstand stresses during de-tensioning after compaction as well as during ejection from the die and for subsequent handling by man and machine. The strengths of zirconium sponge and UO{sub 2} powder compacts have been determined by bending and crushing respectively, and Weibul moduli evaluated. The green density of coarse sponge compact was found to be larger than that from finer sponge. The green density of compacts from lightly attrited UO{sub 2} powder was higher than that from unattrited category, accompanied by an improvement in UO{sub 2} green crushing strength. The factors governing green strength have been examined in the light of published literature and experimental evidence. The methodology and results provide a basis for quality control in metal sponge and ceramic powder compaction in the manufacture of nuclear fuel.

  15. The Power of Mesoscale Modeling... Mul$physics mesoscale simula$on provides a powerful tool for designing materials to

    E-Print Network [OSTI]

    Chen, Long-Qing

    , neutronics, geomechanics, reac+ve transport, microstructure modeling, computa+onal fluid in verba+m from Schwen, D., E. Mar/nez, and A. Caro, J. Nuclear Mater (cv) in UO2 fuel. Also shown are the switching func+on h, the order

  16. O and Pb isotopic analyses of uranium minerals by ion microprobe and UPb ages from the Cigar Lake deposit

    E-Print Network [OSTI]

    Fayek, Mostafa

    of Nuclear Engineering and Radiological Sciences, The University of Michigan, 2958A Cooley Building, 2355­30 Am, thus providing relatively accurate information regarding the timing of fluid interactions of migration of uranium and other radionuclides from a spent fuel repository because uraninite, UO2 + x (the

  17. Effective flow surface of porous materials with two populations of voids under internal pressure: I. a GTN model

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ). Such a microstructure is typical of the highly irradiated uranium dioxide (UO2), a nuclear fuel commonly used in nuclear several studies on the mechanical behavior of highly irradiated nuclear fuels at different scales (Vincent to the effective plastic flow surface of a bi-porous material saturated by a fluid. The material under

  18. This is an author-deposited version published in: http://oatao.univ-toulouse.fr/ Eprints ID: 8615

    E-Print Network [OSTI]

    Mailhes, Corinne

    observed: nonreduced UO2 in the centre, pure metallic uranium on the external layer and an intermediate. Introduction Advanced nuclear fuel cycles are under development worldwide in order to minimise the amount future fuel cycles, recycling of actinides (Cm, Pu, Am, Np) from spent nuclear fuel is required due

  19. This is an author-deposited version published in: http://oatao.univ-toulouse.fr/ Eprints ID: 8615

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    technology for spent metallic fuel is studied in LiCl­KCl where U and Pu are recov- ered on a liquid Cd was partially reduced and three phases were observed: nonreduced UO2 in the centre, pure metallic uranium the electroreduction of solid oxides. 1. Introduction Advanced nuclear fuel cycles are under development worldwide

  20. UNIVERSITY OF WASHINGTON HONORARIA CHECKLIST

    E-Print Network [OSTI]

    Matrajt, Graciela

    UNIVERSITY OF WASHINGTON HONORARIA CHECKLIST FOR INVITED GUEST SPEAKERS PROCUREMENT SERVICES Date Number 35 QUESTIONS? Contact the Tax Office, Phone: 206-616-3003 or Email: taxofc@u.washington.edu If the person IS NOT an invited guest speaker, please use form UoW 1632 available at http://www.washington

  1. Spin-lattice coupling in uranium dioxide probed by magnetostriction measurements at high magnetic fields (P08358-E001-PF)

    SciTech Connect (OSTI)

    Gofryk, K. [Idaho National Lab. (INL), Idaho Falls, ID (United States); Jaime, M. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States). National High Magnetic Field Lab. (MagLab)

    2014-12-01

    Our preliminary magnetostriction measurements have already shown a strong interplay of lattice dynamic and magnetism in both antiferromagnetic and paramagnetic states, and give unambiguous evidence of strong spin- phonon coupling in uranium dioxide. Further studies are planned to address the puzzling behavior of UO2 in magnetic and paramagnetic states and details of the spin-phonon coupling.

  2. Biochemistry Major Research Report Updated February 2014

    E-Print Network [OSTI]

    Cina, Jeff

    Biochemistry Major Research Report Updated February 2014 Biochemistry majors who use their year, hard copy of the report should be turned in to the mailbox for Ken Prehoda (Biochemistry Division Spokesperson) at the UO Chemsitry and Biochemistry office. Students for whom their undergraduate research

  3. Groundwater Chemistry Changes as a Result of CO2 Injection at the ZERT Field Site in Bozeman, Montana

    E-Print Network [OSTI]

    Apps, J.A.

    2010-01-01

    Co +2 Cu + Cd +2 PbSe CrO + AsSe(OH)(SeH) - FeSe MoO 4-2 UOCo +2 Cu + Cd +2 PbSe CrO + AsSe(OH)(SeH) - FeSe MoO 4-2 UO

  4. Modeling the performance of high burnup thoria and urania PWR fuel

    E-Print Network [OSTI]

    Long, Yun, 1972-

    2002-01-01

    Fuel performance models have been developed to assess the performance of ThO?-UO? fuels that can be operated to a high burnup up to 80-100MWd/kgHM in current and future Light Water Reactors (LWRs). Among the various issues ...

  5. APOLLO 16 VOICE TRANSCRIPT PERTAINING TO THE GEOLOGY OF THE LANDING SITE

    E-Print Network [OSTI]

    Rathbun, Julie A.

    * * *: {( APOLLO 16 VOICE TRANSCRIPT PERTAINING TO THE GEOLOGY OF THE LANDING SITE #12;- APOLLO 16 VOICE TRANSCRIPT Pertaining to the geology of the landIng site by N.G. Bai loey and G.E. Ulrich U.s. Geol:ogical Survey Branch of Astrogeology F]agstaff~ Arizona 1915 #12;FORM NTlS·315 UO-70

  6. Hydrofluoric Acid Corrosion Testing on Unplated and Electroless Gold-Plated Samples

    SciTech Connect (OSTI)

    Osborne, P.E.; Icenhour, A.S.; Del Cul, G.D.

    2000-08-01

    The Molten Salt Reactor Experiment (MSRE) remediation requires that almost 40 kg of uranium hexafluoride (UF6) be converted to uranium oxide (UO). In the process of this conversion, six moles of hydrofluoric acid (HP) are produced for each mole of UF6 converted.

  7. Please cite this article in press as: Shuffler, C., et al., Thermal hydraulic analysis for grid supported pressurized water reactor cores. Nucl. Eng. Des. (2009), doi:10.1016/j.nucengdes.2008.12.028

    E-Print Network [OSTI]

    Malen, Jonathan A.

    2009-01-01

    (average for UO2 and centerline/peak for U­ZrH1.6), and fuel rod vibrations and wear. Transient limits differences exist between the two fuel types for designs limited by rod vibrations and wear, because be realized. If the primary coolant pumps and core internals could be designed to accommodate a core pressure

  8. VII. SOLAR RADIATION DATA COMPARISONS In this section some of the solar radiation data

    E-Print Network [OSTI]

    Oregon, University of

    18 VII. SOLAR RADIATION DATA COMPARISONS In this section some of the solar radiation data gathered by the UO Solar Monitoring Network is presented in tabular and pictorial form and related to similar information from other Western U.S. sites. A comparison of the amount of incident solar radiation is made us

  9. 2013-14 Comparison of Faculty Salaries BY SCHOOL/COLLEGE/DIVISION AND RANK WITH SALARY COMPRESSION, WEIGHTED AND NEW HIRE AVERAGE SALARIES

    E-Print Network [OSTI]

    2013-14 Comparison of Faculty Salaries BY SCHOOL/COLLEGE/DIVISION AND RANK WITH SALARY COMPRESSION, WEIGHTED AND NEW HIRE AVERAGE SALARIES Based on data from the Fall 2013 AAU Data Exchange (AAUDE) Faculty Salary Survey UNIVERSITY OF OREGON AND ALL PARTICIPATING PUBLIC AAU INSTITUTIONS UO Avg Salary AAU

  10. Open Archive Toulouse Archive Ouverte (OATAO) OATAO is an open access repository that collects the work of Toulouse researchers and

    E-Print Network [OSTI]

    Mailhes, Corinne

    salts (LiCl or CaCl2), for different purposes: high purity Si production [2], spent nuclear fuel processing (reduc- tion of rare earth oxides [3], UO2 [4], U3O8 [5], MOX [6], spent fuel [7], etc.), pure product is often polluted by carbides, due to the reduction of carbonates CO3 2- formed by the reaction

  11. Characterizing solution and solid-phase amorphous uranyl silicates q

    E-Print Network [OSTI]

    Illinois at Chicago, University of

    . Skanthakumar a , D. Gorman-Lewis a , M.P. Jensen a , K.L. Nagy b a Chemistry Division, Argonne National 2007 Elsevier Ltd. All rights reserved. 1. INTRODUCTION Dissolved uranium, as the uranyl ion UO2 2þ relevant conditions is severely ham- pered by its chemistry in near neutral or basic groundwater, where

  12. Diffusion model of the non-stoichiometric uranium dioxide

    SciTech Connect (OSTI)

    Moore, Emily, E-mail: emily.moore@cea.fr [CEA Saclay, DEN-DPC-SCCME, 91191 Gif-sur-Yvette Cedex (France); Guéneau, Christine, E-mail: christine.gueneau@cea.fr [CEA Saclay, DEN-DPC-SCCME, 91191 Gif-sur-Yvette Cedex (France); Crocombette, Jean-Paul, E-mail: jean-paul.crocombette@cea.fr [CEA Saclay, DEN DEN, Service de Recherches de Métallurgie Physique, 91191 Gif-sur-Yvette Cedex (France)

    2013-07-15

    Uranium dioxide (UO{sub 2}), which is used in light water reactors, exhibits a large range of non-stoichiometry over a wide temperature scale up to 2000 K. Understanding diffusion behavior of uranium oxides under such conditions is essential to ensure safe reactor operation. The current understanding of diffusion properties is largely limited by the stoichiometric deviations inherent to the fuel. The present DICTRA-based model considers diffusion across non-stoichiometric ranges described by experimentally available data. A vacancy and interstitial model of diffusion is applied to the U–O system as a function of its defect structure derived from CALPHAD-type thermodynamic descriptions. Oxygen and uranium self and tracer diffusion coefficients are assessed for the construction of a mobility database. Chemical diffusion coefficients of oxygen are derived with respect to the Darken relation and migration energies of defects are evaluated as a function of stoichiometric deviation. - Graphical abstract: Complete description of Oxygen–Uranium diffusion as a function of composition at various temperatures according to the developed Dictra model. - Highlights: • Assessment of a uranium–oxygen diffusion model with Dictra. • Complete description of U–O diffusion over wide temperature and composition range. • Oxygen model includes terms for interstitial and vacancy migration. • Interaction terms between defects help describe non-stoichiometric domain of UO{sub 2±x}. • Uranium model is separated into mobility terms for the cationic species.

  13. Uranium Oxide as a Highly Reflective Coating from 150-350 eV

    E-Print Network [OSTI]

    Hart, Gus

    1 Uranium Oxide as a Highly Reflective Coating from 150-350 eV Richard L. Sandberg, David D. Allred.byu.edu ABSTRACT We present the measured reflectances (beamline 6.3.2, ALS at LBNL) of naturally oxidized uranium incidence. These show that uranium, as UO2, can fulfill its promise as the highest known single surface

  14. Quantification of water content and speciation in natural silicic glasses (phonolite, dacite, rhyolite) by

    E-Print Network [OSTI]

    Quantification of water content and speciation in natural silicic glasses (phonolite, dacite Sciences de la Terre d'Orléans, CNRS-UO, Orléans, France Abstract The determination of total water content dissolved water content and height or area of the H2OT Raman band. Accuracy of deconvolution procedure

  15. Origin of Low Thermal Conductivity in Nuclear Fuels Quan Yin and Sergey Y. Savrasov

    E-Print Network [OSTI]

    Savrasov, Sergej Y.

    Origin of Low Thermal Conductivity in Nuclear Fuels Quan Yin and Sergey Y. Savrasov Department.41.Bm Today's nuclear fuels are based on 235 U and 239 Pu ele- ments where in a typical setup, a nuclear, the thermal conductivity of UO2 is very low, and the search for alternative materials continues

  16. Pacific Northwest Solar Radiation Data

    E-Print Network [OSTI]

    Oregon, University of

    Pacific Northwest Solar Radiation Data UO SOLAR MONITORING LAB Physics Department -- Solar Energy Center 1274 University of Oregon Eugene, Oregon 97403-1274 April 1, 1999 #12;Hourly solar radiation data can be obtained from the University of Oregon Solar Moni- toring Laboratory after obtaining permission

  17. Effect of Grain Boundaries on Krypton Segregation Behavior in Irradiated Uranium Dioxide

    SciTech Connect (OSTI)

    Valderrama, Billy [Univ. of Florida, Gainesville, FL (United States). Dept. of Materials Science and Engineering; He, Lingfeng [Univ. of Wisconsin, Madison, WI (United States). Dept. of Engineering Physics; Henderson, Hunter B. [Univ. of Florida, Gainesville, FL (United States). Dept. of Materials Science and Engineering; Pakarinen, Janne [Univ. of Wisconsin, Madison, WI (United States). Dept. of Engineering Physics; Jaques, Brian [Boise State Univ., Boise, Idaho (United States). Dept. of Materials Science and Engineering; Gan, Jian [Idaho National Lab. (INL), Idaho Falls, ID (United States); Butt, Darryl P. [Boise State Univ., Boise, Idaho (United States). Dept. of Materials Science and Engineering; Allen, Todd R. [Univ. of Wisconsin, Madison, WI (United States). Dept. of Engineering Physics; Idaho National Lab. (INL), Idaho Falls, ID (United States); Manuel, Michele V. [Univ. of Florida, Gainesville, FL (United States). Dept. of Materials Science and Engineering

    2014-12-01

    Fission products, such as krypton (Kr), are known to be insoluble within UO2, segregating towards grain boundaries, eventually leading to a lowering of the thermal conductivity and fuel swelling. Recent computational studies have identified that differences in grain boundary structure have a significant effect on the segregation behavior of fission products. However, experimental work supporting these simulations is lacking. Atom probe tomography was used to measure the Kr distribution across grain boundaries in UO2. Polycrystalline depleted-UO2 samples was irradiated with 0.7 and 1.8 MeV Kr-ions and annealed to 1000ºC, 1300ºC, and 1600°C for 1 hour to produce a Kr-bubble dominated microstructure. The results of this work indicate a strong dependence of Kr concentration as a function of grain boundary structure. Temperature also influences grain boundary chemistry with greater Kr concentration evident at higher temperatures, resulting in a reduced Kr concentration in the bulk. While Kr migration is active at elevated temperatures, no changes in grain size or texture were observed in the irradiated UO2 samples.

  18. GEOBULLETIN SEpTEmBEr 19Th

    E-Print Network [OSTI]

    Carlson, Anders

    on the oxidation state of uranium, therefore understanding the mechanisms of UO2 oxidative corrosion is essential-classical diffusion is driven by electron transfer from multiple uranium atoms to each interstitial #12;GEOBULLETIN Synchrotron Tools for Geoscientists GeoSoilEnviroCARS (GSECARS) is a national synchrotron x-ray user facility

  19. Policy Paper 49: The Military Balance in the Middle East: An Executive Summary

    E-Print Network [OSTI]

    Cordesman, Anthony H.

    1999-01-01

    experiments in uranium enrichment and centrifuge technologyand centrifuge enrichment, purifies UO2, converts UF6, and fabricates fuel for weapons purpose. There is uraniumcentrifuge method • Al Jesira (Mosul)—mass production of UCL 4 • Al Qaim—phosphate plant for production of U308 • Akashat—uranium

  20. Preparation and Characterization of Uranium Oxides in Support of the K Basin Sludge Treatment Project

    SciTech Connect (OSTI)

    Sinkov, Sergey I.; Delegard, Calvin H.; Schmidt, Andrew J.

    2008-07-08

    Uraninite (UO2) and metaschoepite (UO3·2H2O) are the uranium phases most frequently observed in K Basin sludge. Uraninite arises from the oxidation of uranium metal by anoxic water and metaschoepite arises from oxidation of uraninite by atmospheric or radiolytic oxygen. Studies of the oxidation of uraninite by oxygen to form metaschoepite were performed at 21°C and 50°C. A uranium oxide oxidation state characterization method based on spectrophotometry of the solution formed by dissolving aqueous slurries in phosphoric acid was developed to follow the extent of reaction. This method may be applied to determine uranium oxide oxidation state distribution in K Basin sludge. The uraninite produced by anoxic corrosion of uranium metal has exceedingly fine particle size (6 nm diameter), forms agglomerates, and has the formula UO2.004±0.007; i.e., is practically stoichiometric UO2. The metaschoepite particles are flatter and wider when prepared at 21°C than the particles prepared at 50°C. These particles are much smaller than the metaschoepite observed in prolonged exposure of actual K Basin sludge to warm moist oxidizing conditions. The uraninite produced by anoxic uranium metal corrosion and the metaschoepite produced by reaction of uraninite aqueous slurries with oxygen may be used in engineering and process development testing. A rapid alternative method to determine uranium metal concentrations in sludge also was identified.

  1. Validation of MCNP with X6.XS cross-section set on the SUN Sparc Station 1+ computer for nominally 5 weight percent {sup 235}U enriched uranium systems

    SciTech Connect (OSTI)

    Lewis, K.D.

    1994-09-01

    The national Atomic Vapor Laser Isotope Separation (AVLIS) project has conducted extensive nuclear criticality safety analyses both in the design of Uranium Demonstration System (UDS) equipment and in AVLIS plant design/plant deployment activities. Currently, the design limit of an AVLIS plant calls for uranium product enriched in {sup 235}U to 5 wt %. Since an objective of an AVLIS plant is to deliver its product in a form readily usable by customers, uranium enriched in {sup 235}U will appear in a variety of forms, including metallic; as oxides, e.g., UO{sub 2}, UO{sub 3}; as fluorides, e.g., UF{sub 6}, UF{sub 4}, UO{sub 2}F{sub 2}; as nitrates or nitrides, e.g., UO{sub 2} (NO{sub 3}){sub 2}; and perhaps as uranium salts mixed with hydrocarbons such as oil. A wide range of neutron moderation levels, ranging from zero to optimal, and beyond can also be anticipated in an AVLIS plant, because of decontamination and cleaning activities and other wet chemistry processes that may be required.

  2. Crystallisation Within Simulated High Level Waste Borosilicate Glass Peter B. Rose, Michael I. Ojovan, Neil C. Hyatt and William E. Lee

    E-Print Network [OSTI]

    Sheffield, University of

    . INTRODUCTION In the UK, high level radioactive waste (HLW) arising from the reprocessing of spent nuclear fuel produced from waste arising from the reprocessing of Magnox nuclear fuel. Table II details the composition and La) as well as a Si-rich phase. 75/25 glass, comprising a blend of reprocessing waste derived from UO

  3. A comparison of the y-Radiolysis of TODGA and T(EH)DGA using UHPLC-ESI-MS analysis

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Zarzana, Christopher A.; Groenewold, Gary S.; Mincher, Bruce J.; Mezyk, Stephen P.; Wilden, Andreas; Schmidt, Holger; Modolo, Giuseppe; Wishart, James F.; Cook, Andrew R.

    2015-04-27

    Solutions of the diglycolamide extractants TODGA and T(EH)DGA in n-dodecane were subjected to ?- irradiation in the presence and absence of an acidic aqueous phase. These solutions were then analyzed using UHPLC-ESI-MS to determine the rates of radiolytic decay of the two extractants neat and in contact with respect to the acidity of the contacted aqueous phase, as well as to identify radiolysis products. The presence or absence of an acidic aqueous phase was shown to have no influence on the measured decay rates, nor did the side-chain have an influence. A number of radiolysis products were identified, consistent with thosemore »previously identified for these two compounds using GC-MS. The identity of these radiolysis products suggests that the bonds most vulnerable to radiolytic attack are those in the dyglycolamide center of these molecules, and not on the side-chains.  The agreement of these results with previous work using GC-MS indicates supports the further use of UHPLC-ESI-MS as a tool for studying diglycolamide extractant systems.« less

  4. SURFACE OXIDATION OF DIESEL PARTICULATE MATTER IN PRESENCE OF O3 +NOX: NEW TD/GC/MS ANALYSIS METHOD

    E-Print Network [OSTI]

    Holmén, Britt A.

    SURFACE OXIDATION OF DIESEL PARTICULATE MATTER IN PRESENCE OF O3 +NOX: NEW TD/GC/MS ANALYSIS METHOD+08 2.6e+08 2.8e+08 3e+08 Time--> Abundance TIC: 0914S4.D INTRODUCTION Diesel exhaust is one into the atmosphere diesel particles can be transformed through physical and chemical processes resulting

  5. Taxonomic Classification of Planning Decisions in Health Care: a Review of the State of the Art in OR/MS

    E-Print Network [OSTI]

    Boucherie, Richard J.

    Taxonomic Classification of Planning Decisions in Health Care: a Review of the State of the Art Classification of Planning Decisions in Health Care: a Review of the State of the Art in OR/MS 2 1. Introduction a comprehensive bibliography on operating room management articles. `ORCHID' [181] is a reference library, which

  6. Ultrafast laser ablation ICP-MS: role of spot size, laser fluence, and repetition rate in signal intensity

    E-Print Network [OSTI]

    Harilal, S. S.

    Ultrafast laser ablation ICP-MS: role of spot size, laser fluence, and repetition rate in signal,a Richard E. Russob and Ahmed Hassaneina Ultrafast laser ablation inductively coupled plasma mass system. Though ultrafast laser ablation sample introduction provides better accuracy and precision

  7. The influence of laser pulse duration and energy on ICP-MS signal intensity, elemental fractionation, and

    E-Print Network [OSTI]

    Harilal, S. S.

    of the thermal processes, heating of the sample can result in preferential evaporation, melting, and ablationThe influence of laser pulse duration and energy on ICP-MS signal intensity, elemental width, irradiance, repetition rate, and pulse energy, are critical parameters which influence the laser

  8. Bogazici University, Istanbul, Turkey Chemical Engineering B.S., 2006 Bogazici University, Istanbul, Turkey Chemical Engineering M.S., 2008

    E-Print Network [OSTI]

    Pennycook, Steve

    Education Bogazici University, Istanbul, Turkey Chemical Engineering B.S., 2006 Bogazici University, Istanbul, Turkey Chemical Engineering M.S., 2008 The Ohio State University, Columbus, Ohio Chemical study awarded from The Scientific and Technological Research Council of Turkey Ibrahim Ilgaz Soykal

  9. Graduate Program in Industrial and Systems Engineering M.S. and M.Eng. Learning Goals and Assessment

    E-Print Network [OSTI]

    Graduate Program in Industrial and Systems Engineering M.S. and M.Eng. Learning Goals and Assessment The master's program in Industrial and Systems Engineering provides advanced training in critical areas that span research thrusts of Industrial and Systems Engineering, Production & Manufacturing

  10. UTILIZACIN DE SIG PARA LA ELABORACIN DE UN PLAN DE MANEJO DE AGUAS DE ESCORRENTAS (MS4S)

    E-Print Network [OSTI]

    Gilbes, Fernando

    UTILIZACIÓN DE SIG PARA LA ELABORACIÓN DE UN PLAN DE MANEJO DE AGUAS DE ESCORRENTÍAS (MS4S) Roy Ruiz Vélez Research Assistant II Instituto de Investigaciones Sobre Recursos de Agua y el actualmente se encuentra en la elaboración del Plan de Manejo de Aguas de Escorrentías para el Municipio de

  11. Modeling mesoscale eddies V.M. Canuto a,b,*, M.S. Dubovikov a,c

    E-Print Network [OSTI]

    Modeling mesoscale eddies V.M. Canuto a,b,*, M.S. Dubovikov a,c a Goddard Institute for Spaces November 2003 Available online 6 December 2003 Abstract Mesoscale eddies are not resolved in coarse, no generally accepted model exists for the former; in the latter case, mesoscales are modeled with a bolus

  12. MS.5 MICROSYSTEMS TECHNOLOGY LABORATORIES ANNUAL RESEARCH REPORT 2009 MEMS & BioMEMS MEMS & BioMEMS

    E-Print Network [OSTI]

    microelectromechanical systems (MEMS) present several drawbacks including expense, incompatibility with flexibleMS.5 MICROSYSTEMS TECHNOLOGY LABORATORIES ANNUAL RESEARCH REPORT 2009 MEMS & BioMEMS MEMS & BioMEMS MATERiALS Direct Patterning of Metallic MEMS through Microcontact Printing C. E. Packard, A. Murarka, V

  13. Controls/Robotics/Mechatronics MS Course Recommendations (O) Stands for odd year offerings, (E) for even year.

    E-Print Network [OSTI]

    Sniadecki, Nathan J.

    Controls/Robotics/Mechatronics MS Course Recommendations (O) Stands for odd year offerings, (E) Applied Linear Algebra Amath584 Applied Prob. & Statistics Amath506 Mechatronics, Controls and Robotics Phys344 Phys 334 Electric Circuits Laboratory II Phys 335 Phys 335 #12;Controls/Robotics/Mechatronics

  14. Dynamic User Context Web Personalization in Meta-Portals Christos Bouras, Prof. and Vassilis Poulopoulos, MsC

    E-Print Network [OSTI]

    -portal is an informational node where articles from different sources are collected and presented in a categorized information, such as article tagging, keywords to categories matching and articles to categories relation Poulopoulos, MsC Research Academic Computer Technology Institute and Computer Engineer and Informatics

  15. A comparison of the y-Radiolysis of TODGA and T(EH)DGA using UHPLC-ESI-MS analysis

    SciTech Connect (OSTI)

    Zarzana, Christopher A.; Groenewold, Gary S.; Mincher, Bruce J.; Mezyk, Stephen P.; Wilden, Andreas; Schmidt, Holger; Modolo, Giuseppe; Wishart, James F.; Cook, Andrew R.

    2015-04-27

    Solutions of the diglycolamide extractants TODGA and T(EH)DGA in n-dodecane were subjected to ?- irradiation in the presence and absence of an acidic aqueous phase. These solutions were then analyzed using UHPLC-ESI-MS to determine the rates of radiolytic decay of the two extractants neat and in contact with respect to the acidity of the contacted aqueous phase, as well as to identify radiolysis products. The presence or absence of an acidic aqueous phase was shown to have no influence on the measured decay rates, nor did the side-chain have an influence. A number of radiolysis products were identified, consistent with those previously identified for these two compounds using GC-MS. The identity of these radiolysis products suggests that the bonds most vulnerable to radiolytic attack are those in the dyglycolamide center of these molecules, and not on the side-chains.  The agreement of these results with previous work using GC-MS indicates supports the further use of UHPLC-ESI-MS as a tool for studying diglycolamide extractant systems.

  16. Using an Effective Charges Method to extract Lambda-MS-bar from event shape moments in e+e- annihilation

    E-Print Network [OSTI]

    C. J. Maxwell; K. E. Morgan

    2011-12-01

    We use an Effective Charges (ECH) method to extract Lambda-MS-bar, and hence alpha_s(M_z), from event shape moments in e+e- annihilation. We compare these results with ones obtained using standard MS-bar perturbation theory. The ECH method at NLO is found to perform better than standard MS-bar perturbation theory when applied to means of event shape observables. For example, when we apply the NLO ECH method to we get alpha_s(M_z)=0.1193\\pm0.0003. However ECH at NNLO is found to work less well than ECH at NLO, and the ECH method also fails to describe data for higher moments of event shapes. We attempt to explain this by considering the ECH beta-function as an asymptotic series. We also examine the effect of adding two different models for non-perturbative power corrections to the perturbative approximation given by the ECH method and MS-bar perturbation theory. Whilst only small power corrections are required when using ECH at NLO, it is found that these models are insufficient to couteract the undesirable behaviour of ECH at NNLO.

  17. M&Ms4Graphs: Multi-scale, Multi-dimensional Graph Analytics Tools for Cyber-Security

    E-Print Network [OSTI]

    M&Ms4Graphs: Multi-scale, Multi-dimensional Graph Analytics Tools for Cyber-Security Objective We-of-Networks Framework for Cyber Security." IEEE Intelligence and Security Informatics, 2013. 2. "Towards a Multiscale. "Statistical and Hierarchical Graph Analysis for Cyber Security." SIAM Conference on Discrete Mathematics

  18. MS#040418-01 1 Abstract--The fine scale swimming behavior of fish can now be

    E-Print Network [OSTI]

    Linder, Stephen

    MS#040418-01 1 Abstract--The fine scale swimming behavior of fish can now be studied because evaluation of the performance of these tracking algorithms for the analysis of fine scale behavior of fish was performed using a data set of 100 fish track tracks recorded simultaneously with a multibeam sonar

  19. Electrochemistry of Fuel Cells and Batteries (ME/MS 545) Course Description: Electrochemistry of fuel cells, batteries, sensors, membrane

    E-Print Network [OSTI]

    Lin, Xi

    Electrochemistry of Fuel Cells and Batteries (ME/MS 545) Course Description: Electrochemistry of fuel cells, batteries, sensors, membrane separation and electrolytic methods are discussed J. Bard and Larry R. Faulkner, John Wiley. Recommended/reference text: Fuel Cell Handbook 7, DOE

  20. Electrochemistry of Fuel Cells and Batteries (ME/MS 545) Course Description: Fundamental Electrochemistry of fuel cells, batteries, sensors,

    E-Print Network [OSTI]

    Electrochemistry of Fuel Cells and Batteries (ME/MS 545) Course Description: Fundamental Electrochemistry of fuel cells, batteries, sensors, membrane separation and electrolytic methods are discussed. Recommended/reference text: Fuel Cell Handbook 7, DOE-NETL Production and list of related publications Course

  1. D:\\Ms_thesis\\TTS Master's thesis -Optimization.docx Page 1 of 1 TTS Marine AB

    E-Print Network [OSTI]

    Svenningsson, Josef

    D:\\Ms_thesis\\TTS Master's thesis - Optimization.docx Page 1 of 1 TTS Marine AB Tel: +46 31 725 79 Carlsson From: Hamed Shakib Date: 19 January 2015 Subject: Thesis work at TTS Marine AB Pages: 1 The portfolio of TTS Marine AB located in Gothenburg, Sweden encompasses the design and manufacture of Ro

  2. : : : , Eds. Handbooks in OR & MS, Vol. 1 c 19xx Elsevier Science Publishers B.V. All rights reserved

    E-Print Network [OSTI]

    Mitchell, Joseph S.B.

    : : : , Eds. Handbooks in OR & MS, Vol. 1 c 19xx Elsevier Science Publishers B.V. All rights grew enormously as its fundamental structures were applied to a vast variety of problems in diverse into inter-relationships among some of these fundamental structures, which also led to a uni cation

  3. M.S. Thesis/Signature Page Instruction Sheet PLEASE NOTE: This form must be filled out by the appropriate conferral

    E-Print Network [OSTI]

    Markopoulou, Athina

    M.S. Thesis/Signature Page Instruction Sheet PLEASE NOTE: This form must be filled out the successful completion at your thesis submission and defense, have all members sign the form. 3) ______ Take an email to pickup the M.S. Thesis/Signature form from the Graduate Student Affairs Office. Take the form

  4. Handbook of M.S. Programs -Industrial & Systems Engineering Department, Wayne State University Revised: May 8, 2013 Pg. 1 of 10

    E-Print Network [OSTI]

    Berdichevsky, Victor

    Handbook of M.S. Programs - Industrial & Systems Engineering Department, Wayne State University Revised: May 8, 2013 Pg. 1 of 10 M.S. Programs Handbook Industrial & Systems Engineering Department Wayne describes the following three Master of Science Programs offered by the Department of Industrial and Systems

  5. Mascarenas, D., Hush, D., Theiler, J., Farrar, C., Los Alamos National Laboratory, PO Box 1663 MS T001, Los Alamos, NM 87544

    E-Print Network [OSTI]

    Theiler, James

    Mascarenas, D., Hush, D., Theiler, J., Farrar, C., Los Alamos National Laboratory, PO Box 1663 MS T001, Los Alamos, NM 87544 Title: The Application of Compressed Sensing to Detecting Damage Los Alamos National Laboratory Engineering Institute PO Box 1663 MS T001 Los Alamos, NM, 87544 505

  6. Dehydration of Uranyl Nitrate Hexahydrate to Uranyl Nitrate Trihydrate under Ambient Conditions as Observed via Dynamic Infrared Reflectance Spectroscopy

    SciTech Connect (OSTI)

    Johnson, Timothy J.; Sweet, Lucas E.; Meier, David E.; Mausolf, Edward J.; Kim, Eunja; Weck, Philippe F.; Buck, Edgar C.; McNamara, Bruce K.

    2015-05-22

    the hexahydrate [UO2(NO3)2(H2O)6] (UNH) and the trihydrate [UO2(NO3)2(H2O)3] (UNT) forms. Their stabilities depend on both relative humidity and temperature. Both phases have previously been studied by infrared transmission spectroscopy, but the data were limited by both instrumental resolution and the ability to prepare the samples as pellets without desiccating it. We report time-resolved infrared (IR) measurements using an integrating sphere that allow us to observe the transformation from the hexahydrate to the trihydrate simply by flowing dry nitrogen gas over the sample. Hexahydrate samples were prepared and confirmed via known XRD patterns, then measured in reflectance mode. The hexahydrate has a distinct uranyl asymmetric stretch band at 949.0 cm-1 that shifts to shorter wavelengths and broadens as the sample dehydrates and recrystallizes to the trihydrate, first as a blue edge shoulder but ultimately resulting in a doublet band with reflectance peaks at 966 and 957 cm-1. The data are consistent with transformation from UNH to UNT since UNT has two non-equivalent UO22+ sites. The dehydration of UO2(NO3)2(H2O)6 to UO2(NO3)2(H2O)3 is both a morphological and structural change that has the lustrous lime green crystals changing to the dull greenish yellow of the trihydrate. Crystal structures and phase transformation were confirmed theoretically using DFT calculations and experimentally via microscopy methods. Both methods showed a transformation with two distinct sites for the uranyl cation in the trihydrate, as opposed to a single crystallographic site in the hexahydrate.

  7. Surface Cleaning Techniques: Ultra-Trace ICP-MS Sample Preparation and Assay of HDPE

    SciTech Connect (OSTI)

    Overman, Nicole R.; Hoppe, Eric W.; Addleman, Raymond S.

    2013-06-01

    The world’s most sensitive radiation detection and assay systems depend upon ultra-low background (ULB) materials to reduce unwanted radiological backgrounds. Herein, we evaluate methods to clean HDPE, a material of interest to ULB systems and the means to provide rapid assay of surface and bulk contamination. ULB level material and ultra-trace level detection of actinide elements is difficult to attain, due to the introduction of contamination from sample preparation equipment such as pipette tips, sample vials, forceps, etc. and airborne particulate. To date, literature available on the cleaning of such polymeric materials and equipment for ULB applications and ultra-trace analyses is limited. For these reasons, a study has been performed to identify an effective way to remove surface contamination from polymers in an effort to provide improved instrumental detection limits. Inductively Coupled Plasma Mass Spectroscopy (ICP-MS) was utilized to assess the effectiveness of a variety of leachate solutions for removal of inorganic uranium and thorium surface contamination from polymers, specifically high density polyethylene (HDPE). HDPE leaching procedures were tested to optimize contaminant removal of thorium and uranium. Calibration curves for thorium and uranium ranged from 15 ppq (fg/mL) to 1 ppt (pg/mL). Detection limits were calculated at 6 ppq for uranium and 7 ppq for thorium. Results showed the most effective leaching reagent to be clean 6 M nitric acid for 72 hour exposures. Contamination levels for uranium and thorium found in the leachate solutions were significant for ultralow level radiation detection applications.

  8. Project Final Report: Ubiquitous Computing and Monitoring System (UCoMS) for Discovery and Management of Energy Resources

    SciTech Connect (OSTI)

    Tzeng, Nian-Feng; White, Christopher D.; Moreman, Douglas

    2012-07-14

    The UCoMS research cluster has spearheaded three research areas since August 2004, including wireless and sensor networks, Grid computing, and petroleum applications. The primary goals of UCoMS research are three-fold: (1) creating new knowledge to push forward the technology forefronts on pertinent research on the computing and monitoring aspects of energy resource management, (2) developing and disseminating software codes and toolkits for the research community and the public, and (3) establishing system prototypes and testbeds for evaluating innovative techniques and methods. Substantial progress and diverse accomplishment have been made by research investigators in their respective areas of expertise cooperatively on such topics as sensors and sensor networks, wireless communication and systems, computational Grids, particularly relevant to petroleum applications.

  9. Determination of the pole and (MS)-bar masses of the top quark from the tt-bar cross section

    E-Print Network [OSTI]

    Baringer, Philip S.; Bean, Alice; Carrasco-Lizarraga, M. A.; Chen, G.; Clutter, Justace Randall; McGivern, Carrie Lynne; Sekaric, Jadranka; Wilson, Graham Wallace; D0 Collaboration; Abazov, V. M.; Abbott, B.; Acharya, B.S.; Adams, M.; Adams, T.

    2011-09-20

    Physics Letters B 703 (2011) 422–427 D s D V A O S A R G A M E D S M S S T. D G S Y Z M J. D G Z D P. I. D T. W V H R C A 03 doContents lists available at ScienceDirect Physics Letters B www.elsevier.com/locate/physletb etermination of the pole and MS... of integrated luminosity collected by the D0 experiment at the Fermilab Tevatron Collider. The extracted top quark pole mass and MS mass are compared to the current Tevatron average top quark mass obtained from direct measurements. © 2011 Elsevier B.V. The mass...

  10. Video movie making using remote procedure calls and 4BSD Unix sockets on Unix, UNICOS, and MS-DOS systems

    SciTech Connect (OSTI)

    Robertson, D.W.; Johnston, W.E.; Hall, D.E.; Rosenblum, M.

    1990-03-01

    We describe the use of the Sun Remote Procedure Call and Unix socket interprocess communication mechanisms to provide the network transport for a distributed, client-server based, image handling system. Clients run under Unix or UNICOS and servers run under Unix or MS-DOS. The use of remote procedure calls across local or wide-area networks to make video movies is addressed.

  11. Multiple Sclerosis, MS, is a debilitating disease that affects more than 2.3 million people globally. Dr. Peter Keyel, assistant professor in the

    E-Print Network [OSTI]

    Rock, Chris

    Multiple Sclerosis, MS, is a debilitating disease that affects more than 2.3 million people with multiple sclerosis and other auto immune disorders. Dr. Keyel, with the help of laboratory mice

  12. M.S. ABDULLAH, I. BENEST, A. EVANS, and C. KIMBLE, Knowledge Modelling Techniques For Developing Knowledge Management Systems, 3rd European Conference on

    E-Print Network [OSTI]

    Kimble, Chris

    modelling, knowledge management, knowledge management system, knowledge, knowledge engineering. 1M.S. ABDULLAH, I. BENEST, A. EVANS, and C. KIMBLE, Knowledge Modelling Techniques For Developing Knowledge Management Systems, 3rd European Conference on Knowledge Management, Dublin, Ireland, September

  13. Department Name Degrees Phone Email Website Aerospace Engineering MS, PhD 303-492-6416 aerograd@colorado.edu http://www.colorado.edu/aerospace

    E-Print Network [OSTI]

    Mulligan, Jane

    Department Name Degrees Phone Email Website Aerospace Engineering MS, PhD 303-492-6416 aerograd@colorado.edu http://www.colorado.edu/aerospace Anthropology MA, PhD 303-492-7947 anthro@colorado.edu http://www.colorado.edu/anthropology Applied Mathematics MS, PhD 303-492-1238 amgradco@colorado.edu http://amath.colorado.edu Art and Art

  14. Benchmarking the New RESRAD-OFFSITE Source Term Model with DUST-MS and GoldSim - 13377

    SciTech Connect (OSTI)

    Cheng, J.J.; Kamboj, S.; Gnanapragasam, E.; Yu, C.

    2013-07-01

    RESRAD-OFFSITE is a computer code developed by Argonne National Laboratory under the sponsorship of U.S. Department of Energy (DOE) and U.S. Nuclear Regulatory Commission (NRC). It is designed on the basis of RESRAD (onsite) code, a computer code designated by DOE and NRC for evaluating soil-contaminated sites for compliance with human health protection requirements pertaining to license termination or environmental remediation. RESRAD-OFFSITE has enhanced capabilities of modeling radionuclide transport to offsite locations and calculating potential radiation exposure to offsite receptors. Recently, a new source term model was incorporated into RESRAD-OFFSITE to enhance its capability further. This new source term model allows simulation of radionuclide releases from different waste forms, in addition to the soil sources originally considered in RESRAD (onsite) and RESRAD-OFFSITE codes. With this new source term model, a variety of applications can be achieved by using RESRAD-OFFSITE, including but not limited to, assessing the performance of radioactive waste disposal facilities. This paper presents the comparison of radionuclide release rates calculated by the new source term model of RESRAD-OFFSITE versus those calculated by DUST-MS and GoldSim, respectively. The focus of comparison is on the release rates of radionuclides from the bottom of the contaminated zone that was assumed to contain radioactive source materials buried in soil. The transport of released contaminants outside of the primary contaminated zone is beyond the scope of this paper. Overall, the agreement between the RESRAD-OFFSITE results and the DUST-MS and GoldSim results is fairly good, with all three codes predicting identical or similar radionuclide release profiles over time. Numerical dispersion in the DUST-MS and GoldSim results was identified as potentially contributing to the disagreement in the release rates. In general, greater discrepancy in the release rates was found for short-lived, fast-moving radionuclides than for long-lived, slow-moving radionuclides. (authors)

  15. Alkali vapor pressure modulation on the 100ms scale in a single-cell vacuum system for cold atom experiments

    E-Print Network [OSTI]

    Dugrain, Vincent; Reichel, Jakob

    2014-01-01

    We describe and characterize a device for alkali vapor pressure modulation on the 100ms timescale in a single-cell cold atom experiment. Its mechanism is based on optimized heat conduction between a current-modulated alkali dispenser and a heat sink at room temperature. We have studied both the short-term behavior during individual pulses and the long-term pressure evolution in the cell. The device combines fast trap loading and relatively long trap lifetime, enabling high repetition rates in a very simple setup. These features make it particularly suitable for portable atomic sensors.

  16. Alkali vapor pressure modulation on the 100ms scale in a single-cell vacuum system for cold atom experiments

    E-Print Network [OSTI]

    Vincent Dugrain; Peter Rosenbusch; Jakob Reichel

    2014-07-31

    We describe and characterize a device for alkali vapor pressure modulation on the 100ms timescale in a single-cell cold atom experiment. Its mechanism is based on optimized heat conduction between a current-modulated alkali dispenser and a heat sink at room temperature. We have studied both the short-term behavior during individual pulses and the long-term pressure evolution in the cell. The device combines fast trap loading and relatively long trap lifetime, enabling high repetition rates in a very simple setup. These features make it particularly suitable for portable atomic sensors.

  17. A WSRC-MS-g8-00318 Heat Transfer Model of Above and Underground Insulated Piping

    Office of Scientific and Technical Information (OSTI)

    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 Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal GasAdministrationTechnicalTechnicalScience.govWSRC-MS-g8-00318 Heat Transfer Model of

  18. New three-dimensional inorganic frameworks based on the uranophane-type sheet in monoamine templated uranyl-vanadates

    SciTech Connect (OSTI)

    Jouffret, Laurent; Shao Zhenmian

    2010-10-15

    Seven new uranyl vanadates with mono-protonated amine or tetramethylammonium used as structure directing cations, (C{sub 2}NH{sub 8}){sub 2{l_brace}}[(UO{sub 2})(H{sub 2}O)][(UO{sub 2})(VO{sub 4})]{sub 4{r_brace}}.H{sub 2}O (DMetU5V4) (C{sub 2}NH{sub 8}){l_brace}[(UO{sub 2})(H{sub 2}O){sub 2}][(UO{sub 2})(VO{sub 4})]{sub 3{r_brace}}.H{sub 2}O (DMetU4V3), (C{sub 5}NH{sub 6}){sub 2{l_brace}}[(UO{sub 2})(H{sub 2}O)][(UO{sub 2})(VO{sub 4})]{sub 4{r_brace}}.H{sub 2}O (PyrU5V4), (C{sub 3}NH{sub 10}){l_brace}[(UO{sub 2})(H{sub 2}O){sub 2}][(UO{sub 2})(VO{sub 4})]{sub 3{r_brace}}.H{sub 2}O (isoPrU4V3), (N(CH{sub 3}){sub 4}){l_brace}[(UO{sub 2})(H{sub 2}O){sub 2}][(UO{sub 2})(VO{sub 4})]{sub 3{r_brace}}.H{sub 2}O (TMetU4V3), (C{sub 6}NH{sub 14}){l_brace}[(UO{sub 2})(H{sub 2}O){sub 2}][(UO{sub 2})(VO{sub 4})]{sub 3{r_brace}}.H{sub 2}O (CHexU4V3), and (C{sub 4}NH{sub 12}){l_brace}[(UO{sub 2})(H{sub 2}O)][(UO{sub 2})(VO{sub 4})]{sub 3{r_brace}} (TButU4V3) were prepared from mild-hydrothermal reactions using dimethylamine, pyridine, isopropylamine, tetramethylammonium hydroxide, cyclohexylamine and tertiobutylamine, respectively, with uranyl nitrate and vanadium oxide in acidic medium. The structures were solved using single-crystal X-ray diffraction data. The compounds exhibit three-dimensional uranyl-vanadate inorganic frameworks built from uranophane-type uranyl-vanadate layers pillared by uranyl polyhedra with cavities in between occupied by protonated organic moieties. In the uranyl-vanadate layers the orientations of the vanadate tetrahedra give new geometrical isomers leading to unprecedented pillared systems and new inorganic frameworks with U/V=4/3. Crystallographic data: (DMetU5V4) orthorhombic, Cmc2{sub 1} space group, a=15.6276(4), b=14.1341(4), c=13.6040(4) A; (DMetU4V3) monoclinic, P2{sub 1}/n space group, a=10.2312(4), b=13.5661(7), c=17.5291(7) A, {beta}=96.966(2); (PyrU5V4), triclinic, P1 space group, a=9.6981(3), b=9.9966(2), c=10.5523(2) A, {alpha}=117.194(1), {beta}=113.551(1), {gamma}=92.216(1){sup o}; (isoPrU4V3) monoclinic, P2{sub 1}/n space group, a=10.3507(1), b=13.6500(2), c=17.3035(2) A, {beta}=97.551(1){sup o}; (TMetU4V3) orthorhombic, Pbca space group, a=17.1819(2), b=13.6931(1), c=21.4826(2) A; (CHexU4V3), triclinic P-1 space group, a=9.8273(6), b=11.0294(7), c=12.7506(8) A, {alpha}=98.461(3), {beta}=96.437(3), {gamma}=105.955(3){sup o}; (TButU4V3), monoclinic, P2{sub 1}/m space group, a=9.8048(4), b=17.4567(8), c=15.4820(6) A, {beta}=106.103(2). - Graphical abstract: The various type of PBP pillars P2, P3, P4, and P4' in the three-dimensional inorganic frameworks based on the uranophane-type sheet in monoamine templated uranyl-vanadates.

  19. Uranyl fluoride luminescence in acidic aqueous solutions

    SciTech Connect (OSTI)

    Beitz, J.V.; Williams, C.W. [Argonne National Lab., IL (United States). Chemistry Div.

    1996-08-01

    Luminescence emission spectra and decay rates are reported for uranyl species in acidic aqueous solutions containing HF or added NaF. The longest luminescence lifetime, 0.269 {+-} 0.006 ms, was observed from uranyl in 1 M HF + 1 M HClO{sub 4} at 296 K and decreased with increasing temperature. Based on a luminescence dynamics model that assumes equilibrium among electronically excited uranyl fluoride species and free fluoride ion, this long lived uranyl luminescence in aqueous solution is attributed primarily to UO{sub 2}F{sub 2}. Studies on the effect of added LiNO{sub 3} or Na{sub 2}WO{sub 4}{center_dot}2H{sub 2}O showed relatively weak quenching of uranyl fluoride luminescence which suggests that high sensitivity determination of the UF{sub 6} content of WF{sub 6} gas should be feasible via uranyl luminescence analysis of hydrolyzed gas samples of impure WF{sub 6}.

  20. Standard test method for determination of impurities in nuclear grade uranium compounds by inductively coupled plasma mass spectrometry

    E-Print Network [OSTI]

    American Society for Testing and Materials. Philadelphia

    2010-01-01

    1.1 This test method covers the determination of 67 elements in uranium dioxide samples and nuclear grade uranium compounds and solutions without matrix separation by inductively coupled plasma mass spectrometry (ICP-MS). The elements are listed in Table 1. These elements can also be determined in uranyl nitrate hexahydrate (UNH), uranium hexafluoride (UF6), triuranium octoxide (U3O8) and uranium trioxide (UO3) if these compounds are treated and converted to the same uranium concentration solution. 1.2 The elements boron, sodium, silicon, phosphorus, potassium, calcium and iron can be determined using different techniques. The analyst's instrumentation will determine which procedure is chosen for the analysis. 1.3 The test method for technetium-99 is given in Annex A1. 1.4 The values stated in SI units are to be regarded as standard. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish ...

  1. Identification and decay of the 0.48 ms 13/2{sup +} isomer in {sup 181}Hg

    SciTech Connect (OSTI)

    Andreyev, A. N.; Antalic, S.; Saro, S.; Ackermann, D.; Comas, V. F.; Heinz, S.; Heredia, J. A.; Hessberger, F. P.; Khuyagbaatar, J.; Kojouharov, I.; Kindler, B.; Lommel, B.; Mann, R.; Cocolios, T. E.; Elseviers, J.; Huyse, M.; Duppen, P. Van; Venhart, M.; Franchoo, S.; Hofmann, S.

    2009-10-15

    A new isomer with a half-life of 0.48(2) ms was identified in the nuclide {sup 181}Hg, which was produced in the complete fusion reaction {sup 40}Ca+{sup 144}Sm{yields}{sup 184}Pb* at the velocity filter SHIP (GSI, Darmstadt). The isomeric state was tentatively assigned a spin-parity of 13/2{sup +}. We propose that this isomer de-excites by a yet unobserved low-energy, strongly converted {gamma}-ray transition, followed by a newly identified cascade composed of a 90.3 keV M1 and a 71.4 keV E2 {gamma}-ray transition.

  2. A Comparison of the ?-Radiolysis of TODGA and T(EH)DGA Using UHPLC-ESI-MS Analysis

    SciTech Connect (OSTI)

    Chris A. Zarzana; Gary S. Groenewold; Bruce J. Mincher; Stephen P. Mezyk; Giuseppe Modolo; Andreas Wildens; Holgar Schmidt; James F. Wishart; Andrew R. Cook

    2015-03-01

    Solutions of TODGA and T(EH)DGA in n-dodecane were subjected to ?-irradiation in the presence and absence of an aqueous nitric acid phase and analyzed using UHPLC-ESI-MS to determine the rates of radiolytic decay of the two extractants, as well as to identify radiolysis products. The DGA concentrations decreased exponentially with increasing dose, and the measured degradation rate constants were uninfluenced by the presence or absence of an acidic aqueous phase, or by chemical variations in the alkyl side-chains. The DGA degradation was attributed to reactions of the dodecane radical cation, whose kinetics were measured for TODGA using picosecond electron pulse radiolysis to be k2 = (9.72 ± 1.10) × 109 M-1 s-1. The identified radiolysis products suggest that the bonds most vulnerable to radiolytic attack are those in the diglycolamide center of these molecules and not on the side-chains.

  3. Study of organic compounds evolved during the co-firing of coal and refuse derived fuel using TG/MS

    SciTech Connect (OSTI)

    Puroshothama, Shobha; Lu, R.; Yang, Xiaodong

    1996-10-01

    The evolution of organic compounds during the combustion of carbonaceous fuel coupled with solid waste disposal and limited landfill space has been a cause for concern. Co-firing high sulfur coal with refuse derived fuel seems an attractive alternative technique to tackle the dual problem of controlling SO{sub x} emissions as well as those of the chlorinated organic toxins. The TG serves to emulate the conditions of the fluidized bed combustor and the MS serves as the detector for evolved gases. This versatile combination is used to study the decomposition pathway as well as predict the conditions at which various compounds are formed and may serve as a means of reducing the formation of these chlorinated organic compounds.

  4. The MS-Q Force Field for Clay Minerals: Application to Oil Production Sungu Hwang, Mario Blanco, Ersan Demiralp, Tahir Cagin, and William A. Goddard, III*

    E-Print Network [OSTI]

    Çagin, Tahir

    The MS-Q Force Field for Clay Minerals: Application to Oil Production Sungu Hwang, Mario Blanco inhibitor oil production chemical. 1. Introduction Molecular modeling studies of clay and related zeolite of water, hydrocarbons, and polar organic compounds such as oil field production chemicals on clay mineral

  5. M.A. M.S. M.L.A.S. M.F.A. PH.D. Thesis* Thesis* Thesis* Thesis Dissertation

    E-Print Network [OSTI]

    Palmeri, Thomas

    M.A. M.S. M.L.A.S. M.F.A. PH.D. Thesis* Thesis* Thesis* Thesis Dissertation Non-thesis Non-thesis Non-thesis NOTIFICATION OF INTENT TO GRADUATE ON DECEMBER 19, 2015 Thesis/Dissertation The Graduate School of Vanderbilt

  6. Mathematics Requirements A minimum of six credit hours of Mathematics is required for both the M.S. and Ph.D. Plans of Study.

    E-Print Network [OSTI]

    Mathematics Requirements A minimum of six credit hours of Mathematics is required for both the M.S. and Ph.D. Plans of Study. The following courses are approved: MATH 4013, Engineering Mathematics Mathematics; Intermediate Differential Equations (prerequisites: MATH 2233, 3013) MATH 4263, Introduction

  7. http://www.ics.hawaii.edu/programs/ms/financialaid.pdf Last Revised: 07/24/98, Page 1 of 1 University of Hawai`i at Manoa

    E-Print Network [OSTI]

    Reed, Nancy E.

    http://www.ics.hawaii.edu/programs/ms/financialaid.pdf Last Revised: 07/24/98, Page 1 of 1 University of Hawai`i at Manoa Department of Information and Computer Sciences POST Room 317· 1680 East-West Road · Honolulu, HI 96822 Voice: +1 808 956-7420 · Fax: 956-3548 http://www.ics.hawaii.edu/ ICS

  8. http://www.ics.hawaii.edu/programs/ms/expressinfo.pdf Last Revised: 07/24/98, Page 1 of 2 University of Hawai`i at Manoa

    E-Print Network [OSTI]

    Reed, Nancy E.

    http://www.ics.hawaii.edu/programs/ms/expressinfo.pdf Last Revised: 07/24/98, Page 1 of 2 University of Hawai`i at Manoa Department of Information and Computer Sciences POST Room 317· 1680 East-West Road · Honolulu, HI 96822 Voice: +1 808 956-7420 · Fax: 956-3548 http://www.ics.hawaii.edu/ ICS Express

  9. INI Policies & Procedures MS20 02/05/09 The Policies and Procedures detailed on this page apply only to students entering the MSIN,

    E-Print Network [OSTI]

    McGaughey, Alan

    INI Policies & Procedures ­ MS20 ­ 02/05/09 The Policies and Procedures detailed on this page apply. These policies are subject to change and/or modifications and do not constitute a contract. I. INI DEGREE. TUITION VII. OTHER UNIVERSITY POLICIES VIII. INI NON-ACADEMIC POLICIES IX. OTHER POLICIES X. MISCELLANEOUS

  10. INI Policies & Procedures MS18 8/09/06 The information provided in this policy guide is intended to summarize the rules of the INI MSIN,

    E-Print Network [OSTI]

    McGaughey, Alan

    INI Policies & Procedures ­ MS18 ­ 8/09/06 The information provided in this policy guide is intended to summarize the rules of the INI MSIN, Athens MSIN, MSISTM, and Carnegie Mellon CyLab Japan MSIT a contract. I. INI DEGREE REQUIREMENTS II. COURSE ENROLLMENT III. REGISTRATION PROCEDURES IV. GRADES V

  11. INI Policies & Procedures MS17 8/31/05 Note: There has been a correction to the policy. INI students may take graduate courses in

    E-Print Network [OSTI]

    McGaughey, Alan

    INI Policies & Procedures ­ MS17 ­ 8/31/05 Note: There has been a correction to the policy. INI. The information provided in this policy guide is intended to summarize the rules of the INI MSIN, Athens MSIN and/or modifications and do not constitute a contract. I. INI DEGREE REQUIREMENTS II. COURSE

  12. December 19, 2006 19:23 WSPC -Proceedings Trim Size: 9in x 6in ms RECONSTRUCTION OF NONLINEAR FORCE-FREE

    E-Print Network [OSTI]

    Wheatland, Michael S.

    FORCE-FREE FIELDS AND SOLAR FLARE PREDICTION M.S. WHEATLAND School of Physics, The University of Sydney-polarimetric instruments. Methods of solar flare prediction are also reviewed, with focus on the need to re- produce: Solar corona; Magnetic fields; Solar flares; Solar flare prediction 1. Introduction Coronal magnetic

  13. Check One EdM MA MBE MEng MF MFA MPP MS MMP MHP PSM LAST Name (Family) First Name, Middle Initial

    E-Print Network [OSTI]

    Escher, Christine

    MASTERS Check One EdM MA MBE MEng MF MFA MPP MS MMP MHP PSM LAST Name (Family) First Name, Middle. No. 503 G* Non-Thesis Project, Research, or PSM Internship (3-6 credits) Course Cr. Gr. If applicable

  14. Supplement for "AMS and LC/MS analyses of SOA from the photooxidation of benzene and 1,3,5-trimethylbenzene in

    E-Print Network [OSTI]

    Meskhidze, Nicholas

    1 Supplement for "AMS and LC/MS analyses of SOA from the photooxidation of benzene and 1@nies.go.jp) #12;2 Fig. S1: Time profiles (a) benzene concentration and HROrg and HRNO3 particulate product during the photooxidation of benzene (run 3). #12;3 Fig. S2. Yield curves for SOA formed from

  15. Nozzle R&D for a 20-m/s, 1-cm-diameter Mercury Jet K.T. McDonald

    E-Print Network [OSTI]

    McDonald, Kirk

    Design Review 7-8 Feb 05 Page 54 from Handbook of Hydraulic Resistance, Idel'Chik, 3rd Edition, Begel.73 hp. (2) · To produce the 20-m/s jet into air/vacuum out of a nozzle requires a pressure Pressure = 1

  16. Jump start your career with an MS degree at Northwestern, with an emphasis in energy and sustainability. This program is for

    E-Print Network [OSTI]

    Bustamante, Fabián E.

    to move into the increasingly critical energy/sustainability field. Dedicated, intensive and handsEfficientTechnology)* ME499ProjectsInEnergySystemsandSustainability* Contact Dr.Manohar Kulkarni, Assistant ChairJump start your career with an MS degree at Northwestern, with an emphasis in energy

  17. Short Straight Sections in the LHC Matching Sections (MS SSS) An Extension of the Arc Cryostats to Fulfil Specific Machine Functionalities

    E-Print Network [OSTI]

    Parma, V; Lutton, F

    2005-01-01

    The LHC insertions require 50 specific superconducting quadrupoles in the matching sections, operating either in 1.9 K superfluid helium or in boiling helium at 4.5 K. These magnets are assembled together with corrector magnets in cold masses, and are inserted in individual cryostats to form the MS Short Straight Sections (MS SSS). The variety of quadrupoles and corrector magnets leads to 10 families of cold masses, with lengths ranging from 5 to 12 m and weights ranging from 60 to 140 kN. The MS SSS need to fulfil specific requirements related to the collider topology, its cryogenic layout and the powering scheme. Most MS SSS are standalone cryogenic and super-conducting units, i.e. they are not in the continuous arc cryostat, and therefore need dedicated cryogenic and electrical feeding. Specially designed cryostat end-caps are required to close the vacuum vessels at each end, which include low heat in-leak Cold-to-Warm transitions (CWT) for the beam tubes and 6 kA local electrical feedthrough for powering...

  18. FA12 Nanoscale Devices & Systems MS Exam Solution 1. For small semiconductor quantum dot structures, the single-electron charging energy can

    E-Print Network [OSTI]

    California at San Diego, University of

    FA12 Nanoscale Devices & Systems MS Exam Solution 1. For small semiconductor quantum dot structures, the single-electron charging energy can become comparable to the quantum confinement energies in the dot effective mass 0 * 5.0 mmp , where m0 is the free electron mass. An infinite potential energy barrier

  19. School of Science Rensselaer's School of Science offers M.S. and Ph.D. programs in eight academic areas, preparing

    E-Print Network [OSTI]

    Linhardt, Robert J.

    .g., chemistry, physics, or mathematics. However, the working environment that college graduates face today, and will face in the future, is one in which their jobs increasingly bridge more than one area of specialization@rpi.edu rpi.edu/dept/bio Chemistry, M.S., Ph.D. Research areas include analytical and bioanalytical chemistry

  20. School of Science Rensselaer's School of Science offers M.S. and Ph.D. programs in eight academic areas, preparing

    E-Print Network [OSTI]

    Linhardt, Robert J.

    .g., chemistry, physics, or mathematics. However, the working environment that college graduates face today, and will face in the future, is one in which their jobs increasingly bridge more than one area of specialization Admissions Coordinator (518) 276-2808 malmj@rpi.edu www.rpi.edu/dept/bio Chemistry, M.S., Ph.D. Research

  1. Dynamical model of mesoscales in z-coordinates V.M. Canuto a,b,*, M.S. Dubovikov a,c

    E-Print Network [OSTI]

    Dynamical model of mesoscales in z-coordinates V.M. Canuto a,b,*, M.S. Dubovikov a,c a NASA Abstract Using the equations of the dynamical mesoscale model developed previously [Ocean Modell. (2004) 8, 1­ 30], we derive a mesoscale model in z-coordinates to be used in coarse resolution OGCMs. We

  2. M.S. and Ph.D. Assistantships Available The National Marine Fisheries Service Recruiting, Training, and Research (RTR) Program at the

    E-Print Network [OSTI]

    Watson, Craig A.

    , and Research (RTR) Program at the University of Florida (UF) is taking applications for both M.S. and Ph innovative stock assessment, population dynamics, and modeling methods to important research questions of harvest on fish stocks · Simulating the fishery management process, including data collection, analysis

  3. CONTAGIOUS DISEASE MODULE FOR THE JOINT EFFECTS MODEL Mr. Jason Rodriguez, Ms. Karen E. Cheng, Dr. Gene E. McClellan, Dr. David J. Crary, and Dr.

    E-Print Network [OSTI]

    Ray, Jaideep

    CONTAGIOUS DISEASE MODULE FOR THE JOINT EFFECTS MODEL Mr. Jason Rodriguez, Ms. Karen E. Cheng, Dr to modeling the spread of contagious diseases across a population-at-risk represented by the LandScan database the effectiveness of contagious disease controls such as quarantine and prophylaxis. We are working with Sandia

  4. Email: hookla@ornl.gov One Bethel Valley Road Phone: 865-241-4846 P.O. Box 2008, MS-6301

    E-Print Network [OSTI]

    , including those analyzing the evolution in time and space of the greenhouse gases that affect global climateEmail: hookla@ornl.gov One Bethel Valley Road Phone: 865-241-4846 P.O. Box 2008, MS-6301 Oak Ridge by the U.S. Department of Energy to the HIPPO Project. Project Website: http://hippo.ornl.gov Additional

  5. Characteristics of a multiple disk pump with turbulent rotor flow 

    E-Print Network [OSTI]

    Roddy, Patrick James

    1985-01-01

    of these turbomachines until the early sixties when Rice [4] designed and tested a multiple disk pump and compressor. Since then, the per- formance of these turbomachines operating with laminar rotor flow has been well documented [1-6, 7-12]. In the seventies, Bakke... the Disk Radius (LT'8) [ (8 + |/)/T + ( aH/8)]2 2T/T ruotq. znba [gy] yyzqoznqg g~otTdxa aqua. go surzag u) passaudxa aq uzo zoq. ozg uoTgo)zg 9uxuuzg aqua '(gT'2) uoTgznba uZ (9T'2) (au 2/1 2 2 ( (n) + (& ? &U)) = sz r(s)p aqua Suoyz guxod fiuz gz...

  6. Partial characterization of [alpha]-D-mannosidase deficient mutants in Saccharomyces cerevisiae 

    E-Print Network [OSTI]

    Harper, Linda Louise

    1981-01-01

    &Go Lo Lqouo IW: goaI'qnS uo CeW I86 I uaqwaoaO 33N3IDS 30 IJ3lSVW go aaubap aqua uog guawauLnbau aqua go guawIIigIng Ieigued ui Egisuan IuO Wgy sexal go aGaIIog agenpeug aqua og paggiwqnS 'd3dIJ'dH 3SIA01 VONI1 sisaql y 3It IS IA3N30 S3...VIS IR3)J30 S30AIJOJJ'dHOO'dS lJI SlNb'3lllJ J. N3IOI330 3SVOISONN'dlJ-0- 30 NOIJ. VZIJJ3J. O'JJJVHO 1@I J. 'dVd ue[[ aqua go [[e q. eqg pageo[puL suieugs quegnw uaqgo uaaqunog aqua pue [ ueg woug payonugsuoo suieuqs pLo[d ip uo pawuoguad saipnqs...

  7. Characterization of microchip capillary electrophoresis systems coupled to microdialysis for on-line monitoring

    E-Print Network [OSTI]

    Nandi, P.; Suzuki, N.; Lunte, Susan M.

    2006-10-25

    secs 5 secs F l uoresce nce U n i t Minute 7.95 mM Arg 2 4 6 8 10 12 Fl uor escence U n i t Minute 035810 Fl uor e scence U n i t Minute CHO CHO RNH 2 -X+ + NR X Naphthalene?2,3?dicarboxaldehyde ?Reduction/?absence?of?electrokinetic sampling...01234 250 nM 100 nM 25 nM Blank F l uo re sce nc e U n i t Minute F l uo re sce nc e U n i t Microdialysis DEVELOPMENT?OF?A?MICRODIALYSIS?MICROCHIP?CE?SYSTEM? FOR?ON?LINE?MONITORING Pradyot Nandi,?Nobuyuki?Suzuki,?Susan?M.?Lunte Department...

  8. Multilevel modeling of social interactions and mood in lonely and socially connected individuals: The MacArthur Social Neuroscience Studies

    E-Print Network [OSTI]

    Hawkley, L. C.; Preacher, Kristopher J.; Cacioppo, J. T.

    2007-01-01

    SUSIl asoqr aM '(OOOZ ''le ta qseqsel) NIM'lhtr puu (0002 'uop8uo3 4 '3uoaq3 'qsnq-uapneg '>lfrg) rutt se qrns sa8e>pud 611141 parpJrpap puu (0'ZI) SSdS pue (fS'S) feUStf ,o suorsral raivrau Surpnpur 'sa8eped aremryos Ie)rtsrlets lera^as ur PaPnPur 3rE sla...; '3urilas ro raulrBd uorlJEJatur Jo aJror{) lu?dDru?d uo s}urEJlsuoJ leluarurradxg'-{rrprle,r lerrSolora ur,rno1,{11errd,tr aJe pooru ;o sa8ueqrxa IeIJos Jo suorlelndtueur 'r(lrlesner JaJur ol paJrnbal aruaparard prod -ruar ar{r r...

  9. An experimental study of jet impingement on a circular cylinder 

    E-Print Network [OSTI]

    Potts, Dennis Wayne

    1984-01-01

    profile for U = 550 ft/s, x/d = 30 (radial 2) 1 30 85 Wall jet turbulence profile for U = 550 ft/s, x/d = 30 ( radial 4) 131 86 Wall jet turbulence profile for Uo5 50 f t/ s, x/ d= 30(ax i al rad i al ) 132 Spread r ate of the wall jet along the axis... of the cylinder a compar ed to a flat plate . . . . 140 95 Velocity scale of the wall jet for U = 400 ft/s, x/d = 7 141 96 Velocity scale of the wall jet for U = 400 ft/s, x/d = 15 142 97 Velocity scale of tne wall jet for Uo 4 0 0 f t / s x / d 3 0 143 9S...

  10. A new harmonic analyzer 

    E-Print Network [OSTI]

    Tchamran-Savehi, Abbas

    1958-01-01

    (3) A I f(x) Cos nx dx n o 2fl (4) B ~ ? f(x) Sin nx dx n or U~S (7) A 2 g f( U + x ) Cos n( U Q x ) S ~ U~o V~S V S (8) Bn - N f( U + x ) Sin n( U + x ) S ~ U~o are concerned require two operations: a) Multiplication of Cos nx or Sin...(x) = ? +AI Cos x + A2 Cos 2x + A3 Cos 3x +. . . + A Cos nx +. . . 1 2 3 ' ' n + Bl Sin x t B2 Sin 2x & B3 Sin 3x +. . . + Bn Sin nx +. . . or A (2) f(x) ~ ? + ( A Cos nx + Bn Sin nx ) where: A 1 n 2)I f(x) Cos nx dx (4) B 1 fl f(x) Sin nx dx 2 l1...

  11. Adequacy of the 123-group cross-section library for criticality analyses of water-moderated uranium systems

    SciTech Connect (OSTI)

    Parks, C.V.; Wright, R.Q.; Jordan, W.C. [Oak Ridge National Lab., TN (United States)

    1995-08-01

    In a recent criticality analysis for an array of water-moderated packages containing highly enriched uranium, the 123-group cross-section library in the SCALE system was observed to have a nonconservative discrepancy of approximately 3 to 3.5% when compared with more recently developed libraries. A simple representative system of UO{sub 2}F{sub 2}-H{sub 2}O was used to identify that the problem results from a lack of resonance data for {sup 235}U. Only a single set of self-shielded cross sections, most likely corresponding to a water-moderated infinite dilute system, was provided with the original data. The UO{sub 2}F{sub 2}-H{sub 2}O study indicates that this limitation may cause nonconservative discrepancies as high as 5.5% for some water-moderated, highly enriched uranium systems. Characteristics of the systems where the discrepancy is evident are identified and discussed.

  12. Sampling, characterization, and remote sensing of aerosols formed in the atmospheric hydrolysis of uranium hexafluoride

    SciTech Connect (OSTI)

    Bostick, W.D.; McCulla, W.H.; Pickrell, P.W.

    1984-05-01

    When gaseous uranium hexafluoride (UF/sub 6/) is released into the atmosphere, it rapidly reacts with ambient moisture to form an aerosol of uranyl fluoride (UO/sub 2/F/sub 2/) and hydrogen fluoride (HF). As part of our Safety Analysis program, we have performed several experimental releases of HF/sub 6/ in contained volumes in order to investigate techniques for sampling and characterizing the aerosol materials. The aggregate particle morphology and size distribution have been found to be dependent upon several conditions, including the temperature of the UF/sub 6/ at the time of its release, the relative humidity of the air into which it is released, and the elapsed time after the release. Aerosol composition and settling rate have been investigated using stationary samplers for the separate collection of UO/sub 2/F/sub 2/ and HF and via laser spectroscopic remote sensing (Mie scatter and infrared spectroscopy). 25 refs., 16 figs., 5 tabs.

  13. A view of treatment process of melted nuclear fuel on a severe accident plant using a molten salt system

    SciTech Connect (OSTI)

    Fujita, R.; Takahashi, Y.; Nakamura, H.; Mizuguchi, K. [Power and Industrial Research and Development Center, Toshiba Corporation Power Systems Company, 4-1 Ukishima-cho, Kawasaki-ku, Kawasaki 210-0862 (Japan); Oomori, T. [Chemical System Design and Engineering Department, Toshiba Corporation Power Systems Company, 8 Shinsugita-cho, Isogo-ku, Yokohama 235-8523 (Japan)

    2013-07-01

    At severe accident such as Fukushima Daiichi Nuclear Power Plant Accident, the nuclear fuels in the reactor would melt and form debris which contains stable UO2-ZrO2 mixture corium and parts of vessel such as zircaloy and iron component. The requirements for solution of issues are below; -) the reasonable treatment process of the debris should be simple and in-situ in Fukushima Daiichi power plant, -) the desirable treatment process is to take out UO{sub 2} and PuO{sub 2} or metallic U and TRU metal, and dispose other fission products as high level radioactive waste; and -) the candidate of treatment process should generate the smallest secondary waste. Pyro-process has advantages to treat the debris because of the high solubility of the debris and its total process feasibility. Toshiba proposes a new pyro-process in molten salts using electrolysing Zr before debris fuel being treated.

  14. Relocation and freezing of liquefied fuel-rod material. [PWR

    SciTech Connect (OSTI)

    Moore, R.L.; Broughton, J.M.

    1982-01-01

    Severe degraded core cooling accidents, such as occurred at TMI-2 can potentially reach temperatures in excess of cladding melting. When the molten cladding is in contact with UO/sub 2/ fuel, the UO/sub 2/ will be dissolved contributing significantly to the total amount of liquefied material flowing down the rod and eventually freezing in a lower, cooler region of the core. The primary objectives of this paper are to evaluate the relocation and freezing characteristics of liquefied fuel rod material over a wide range of system conditions, physical characteristics of the fuel rod and liquefied material, and material thermo-physical properties to determine the relative influence of the controlling parameters. First the analytical model used in the analysis is briefly reviewed. The results of the analyses are then presented and discussed, and this is followed by the conclusions.

  15. Aerosols released during large-scale integral MCCI tests in the ACE Program

    SciTech Connect (OSTI)

    Fink, J.K.; Thompson, D.H.; Spencer, B.W.; Sehgal, B.R.

    1992-04-01

    As part of the internationally sponsored Advanced Containment Experiments (ACE) program, seven large-scale experiments on molten core concrete interactions (MCCIs) have been performed at Argonne National Laboratory. One of the objectives of these experiments is to collect and characterize all the aerosols released from the MCCIs. Aerosols released from experiments using four types of concrete (siliceous, limestone/common sand, serpentine, and limestone/limestone) and a range of metal oxidation for both BWR and PWR reactor core material have been collected and characterized. Release fractions were determined for UO{sup 2}, Zr, the fission-products: BaO, SrO, La{sub 2}O{sub 3}, CeO{sub 2}, MoO{sub 2}, Te, Ru, and control materials: Ag, In, and B{sub 4}C. Release fractions of UO{sub 2} and the fission products other than Te were small in all tests. However, release of control materials was significant.

  16. Aerosols released during large-scale integral MCCI tests in the ACE Program

    SciTech Connect (OSTI)

    Fink, J.K.; Thompson, D.H.; Spencer, B.W. ); Sehgal, B.R. )

    1992-01-01

    As part of the internationally sponsored Advanced Containment Experiments (ACE) program, seven large-scale experiments on molten core concrete interactions (MCCIs) have been performed at Argonne National Laboratory. One of the objectives of these experiments is to collect and characterize all the aerosols released from the MCCIs. Aerosols released from experiments using four types of concrete (siliceous, limestone/common sand, serpentine, and limestone/limestone) and a range of metal oxidation for both BWR and PWR reactor core material have been collected and characterized. Release fractions were determined for UO{sup 2}, Zr, the fission-products: BaO, SrO, La{sub 2}O{sub 3}, CeO{sub 2}, MoO{sub 2}, Te, Ru, and control materials: Ag, In, and B{sub 4}C. Release fractions of UO{sub 2} and the fission products other than Te were small in all tests. However, release of control materials was significant.

  17. Biogeochemical Mechanisms Controlling Reduced Radionuclide Particle Properties and Stability

    SciTech Connect (OSTI)

    Jim K. Fredrickson; John M. Zachara; Matthew J. Marshall; Alex S. Beliaev

    2006-06-01

    Uranium and Technetium are the major risk-driving contaminants at Hanford and other DOE sites. These radionuclides have been shown to be reduced by dissimilatory metal reducing bacteria (DMRB) under anoxic conditions. Laboratory studies have demonstrated that reduction results in the formation of poorly soluble hydrous oxides, UO2(s) and TcO2n?H2O(s), that are believed to limit mobility in the environment. The mechanisms of microbial reduction of U and Tc have been the focus of considerable research in the Environmental Remediation Sciences Program (ERSP). In spite of equal or greater importance in terms of controlling the environmental fate of the contaminants relatively little is known regarding the precipitation mechanism(s), reactivity, persistence, and transport of biogenic UO2(s) and TcO2(s).

  18. AGR-2 IRRADIATION TEST FINAL AS-RUN REPORT

    SciTech Connect (OSTI)

    Blaise, Collin

    2014-07-01

    This document presents the as-run analysis of the AGR-2 irradiation experiment. AGR-2 is the second of the planned irradiations for the Advanced Gas Reactor (AGR) Fuel Development and Qualification Program. Funding for this program is provided by the U.S. Department of Energy as part of the Very High Temperature Reactor (VHTR) Technical Development Office (TDO) program. The objectives of the AGR-2 experiment are to: (a) Irradiate UCO (uranium oxycarbide) and UO2 (uranium dioxide) fuel produced in a large coater. Fuel attributes are based on results obtained from the AGR-1 test and other project activities. (b) Provide irradiated fuel samples for post-irradiation experiment (PIE) and safety testing. (c) Support the development of an understanding of the relationship between fuel fabrication processes, fuel product properties, and irradiation performance. The primary objective of the test was to irradiate both UCO and UO2 TRISO (tri-structural isotropic) fuel produced from prototypic scale equipment to obtain normal operation and accident condition fuel performance data. The UCO compacts were subjected to a range of burnups and temperatures typical of anticipated prismatic reactor service conditions in three capsules. The test train also includes compacts containing UO2 particles produced independently by the United States, South Africa, and France in three separate capsules. The range of burnups and temperatures in these capsules were typical of anticipated pebble bed reactor service conditions. The results discussed in this report pertain only to U.S. produced fuel. In order to achieve the test objectives, the AGR-2 experiment was irradiated in the B-12 position of the Advanced Test Reactor (ATR) at Idaho National Laboratory (INL) for a total irradiation duration of 559.2 effective full power days (EFPD). Irradiation began on June 22, 2010, and ended on October 16, 2013, spanning 12 ATR power cycles and approximately three and a half calendar years. The test contained six independently controlled and monitored capsules. Each U.S. capsule contained 12 compacts of either UCO or UO2 AGR coated fuel. No fuel particles failed during the AGR-2 irradiation. Final burnup values on a per compact basis ranged from 7.26 to 13.15% FIMA (fissions per initial heavy-metal atom) for UCO fuel, and 9.01 to 10.69% FIMA for UO2 fuel, while fast fluence values ranged from 1.94 to 3.47´1025 n/m2 (E >0.18 MeV) for UCO fuel, and from 3.05 to 3.53´1025 n/m2 (E >0.18 MeV) for UO2 fuel. Time-average volume-average (TAVA) temperatures on a capsule basis at the end of irradiation ranged from 987°C in Capsule 6 to 1296°C in Capsule 2 for UCO, and from 996 to 1062°C in UO2-fueled Capsule 3. By the end of the irradiation, all of the installed thermocouples (TCs) had failed. Fission product release-to-birth (R/B) ratios were quite low. In the UCO capsules, R/B values during the first three cycles were below 10-6 with the exception of the hotter Capsule 2, in which the R/Bs reached 2´10-6. In the UO2 capsule (Capsule 3), the R/B values during the first three cycles were below 10-7. R/B values for all following cycles are not reliable due to gas flow and cross talk issues.

  19. AGR-2 irradiation test final as-run report, Rev. 1

    SciTech Connect (OSTI)

    Collin, Blaise

    2014-08-01

    This document presents the as-run analysis of the AGR-2 irradiation experiment. AGR-2 is the second of the planned irradiations for the Advanced Gas Reactor (AGR) Fuel Development and Qualification Program. Funding for this program is provided by the U.S. Department of Energy as part of the Very High Temperature Reactor (VHTR) Technical Development Office (TDO) program. The objectives of the AGR-2 experiment are to: (a) Irradiate UCO (uranium oxycarbide) and UO2 (uranium dioxide) fuel produced in a large coater. Fuel attributes are based on results obtained from the AGR-1 test and other project activities; (b) Provide irradiated fuel samples for post-irradiation experiment (PIE) and safety testing; and, (c) Support the development of an understanding of the relationship between fuel fabrication processes, fuel product properties, and irradiation performance. The primary objective of the test was to irradiate both UCO and UO2 TRISO (tri-structural isotropic) fuel produced from prototypic scale equipment to obtain normal operation and accident condition fuel performance data. The UCO compacts were subjected to a range of burnups and temperatures typical of anticipated prismatic reactor service conditions in three capsules. The test train also includes compacts containing UO2 particles produced independently by the United States, South Africa, and France in three separate capsules. The range of burnups and temperatures in these capsules were typical of anticipated pebble bed reactor service conditions. The results discussed in this report pertain only to U.S. produced fuel. In order to achieve the test objectives, the AGR-2 experiment was irradiated in the B-12 position of the Advanced Test Reactor (ATR) at Idaho National Laboratory (INL) for a total irradiation duration of 559.2 effective full power days (EFPD). Irradiation began on June 22, 2010, and ended on October 16, 2013, spanning 12 ATR power cycles and approximately three and a half calendar years. The test contained six independently controlled and monitored capsules. Each U.S. capsule contained 12 compacts of either UCO or UO2 AGR coated fuel. No fuel particles failed during the AGR-2 irradiation. Final burnup values on a per compact basis ranged from 7.26 to 13.15% FIMA (fissions per initial heavy-metal atom) for UCO fuel, and 9.01 to 10.69% FIMA for UO2 fuel, while fast fluence values ranged from 1.94 to 3.47´1025 n/m2 (E >0.18 MeV) for UCO fuel, and from 3.05 to 3.53´1025 n/m2 (E >0.18 MeV) for UO2 fuel. Time-average volume-average (TAVA) temperatures on a capsule basis at the end of irradiation ranged from 987°C in Capsule 6 to 1296°C in Capsule 2 for UCO, and from 996 to 1062°C in UO2-fueled Capsule 3. By the end of the irradiation, all of the installed thermocouples (TCs) had failed. Fission product release-to-birth (R/B) ratios were quite low. In the UCO capsules, R/B values during the first three cycles were below 10-6 with the exception of the hotter Capsule 2, in which the R/Bs reached 2´10-6. In the UO2 capsule (Capsule 3), the R/B values during the first three cycles were below 10-7. R/B values for all following cycles are not reliable due to gas flow and cross talk issues.

  20. AGR-2 Irradiation Test Final As-Run Report, Rev 2

    SciTech Connect (OSTI)

    Blaise Collin

    2014-08-01

    This document presents the as-run analysis of the AGR-2 irradiation experiment. AGR-2 is the second of the planned irradiations for the Advanced Gas Reactor (AGR) Fuel Development and Qualification Program. Funding for this program is provided by the U.S. Department of Energy as part of the Very High Temperature Reactor (VHTR) Technical Development Office (TDO) program. The objectives of the AGR-2 experiment are to: (a) Irradiate UCO (uranium oxycarbide) and UO2 (uranium dioxide) fuel produced in a large coater. Fuel attributes are based on results obtained from the AGR-1 test and other project activities. (b) Provide irradiated fuel samples for post-irradiation experiment (PIE) and safety testing. (c) Support the development of an understanding of the relationship between fuel fabrication processes, fuel product properties, and irradiation performance. The primary objective of the test was to irradiate both UCO and UO2 TRISO (tri-structural isotropic) fuel produced from prototypic scale equipment to obtain normal operation and accident condition fuel performance data. The UCO compacts were subjected to a range of burnups and temperatures typical of anticipated prismatic reactor service conditions in three capsules. The test train also includes compacts containing UO2 particles produced independently by the United States, South Africa, and France in three separate capsules. The range of burnups and temperatures in these capsules were typical of anticipated pebble bed reactor service conditions. The results discussed in this report pertain only to U.S. produced fuel. In order to achieve the test objectives, the AGR-2 experiment was irradiated in the B-12 position of the Advanced Test Reactor (ATR) at Idaho National Laboratory (INL) for a total irradiation duration of 559.2 effective full power days (EFPD). Irradiation began on June 22, 2010, and ended on October 16, 2013, spanning 12 ATR power cycles and approximately three and a half calendar years. The test contained six independently controlled and monitored capsules. Each U.S. capsule contained 12 compacts of either UCO or UO2 AGR coated fuel. No fuel particles failed during the AGR-2 irradiation. Final burnup values on a per compact basis ranged from 7.26 to 13.15% FIMA (fissions per initial heavy-metal atom) for UCO fuel, and 9.01 to 10.69% FIMA for UO2 fuel, while fast fluence values ranged from 1.94 to 3.47´1025 n/m2 (E >0.18 MeV) for UCO fuel, and from 3.05 to 3.53´1025 n/m2 (E >0.18 MeV) for UO2 fuel. Time-average volume-average (TAVA) temperatures on a capsule basis at the end of irradiation ranged from 987°C in Capsule 6 to 1296°C in Capsule 2 for UCO, and from 996 to 1062°C in UO2-fueled Capsule 3. By the end of the irradiation, all of the installed thermocouples (TCs) had failed. Fission product release-to-birth (R/B) ratios were quite low. In the UCO capsules, R/B values during the first three cycles were below 10-6 with the exception of the hotter Capsule 2, in which the R/Bs reached 2´10-6. In the UO2 capsule (Capsule 3), the R/B values during the first three cycles were below 10-7. R/B values for all following cycles are not reliable due to gas flow and cross talk issues.

  1. Method for fluorination of uranium oxide

    DOE Patents [OSTI]

    Petit, George S. (Oak Ridge, TN)

    1987-01-01

    Highly pure uranium hexafluoride is made from uranium oxide and fluorine. The uranium oxide, which includes UO.sub.3, UO.sub.2, U.sub.3 O.sub.8 and mixtures thereof, is introduced together with a small amount of a fluorine-reactive substance, selected from alkali chlorides, silicon dioxide, silicic acid, ferric oxide, and bromine, into a constant volume reaction zone. Sufficient fluorine is charged into the zone at a temperature below approximately 0.degree. C. to provide an initial pressure of at least approximately 600 lbs/sq. in. at the ambient atmospheric temperature. The temperature is then allowed to rise in the reaction zone until reaction occurs.

  2. GeMs/GSAOI observations of La Serena 94: an old and far open cluster inside the solar circle

    E-Print Network [OSTI]

    Santos, J F C; Carrasco, E R; Maia, F F S; Neichel, B

    2015-01-01

    Physical properties were derived for the candidate open cluster La Serena 94, recently unveiled by the VVV collaboration. Thanks to the exquisite angular resolution provided by GeMS/GSAOI, we could characterize this system in detail, for the first time, with deep photometry in JHK$_{s}$ - bands. Decontaminated JHK$_{s}$ diagrams reach about 5 mag below the cluster turnoff in H. The locus of red clump giants in the colour - colour diagram, together with an extinction law, was used to obtain an average extinction of $A_V =14.18 \\pm 0.71$. The same stars were considered as standard - candles to derive the cluster distance, $8.5 \\pm 1.0$ kpc. Isochrones were matched to the cluster colour - magnitude diagrams to determine its age, $\\log{t(yr)}=9.12\\pm 0.06$, and metallicity, $Z=0.02\\pm0.01$. A core radius of $r_{c}=0.51\\pm 0.04$ pc was found by fitting King models to the radial density profile. By adding up the visible stellar mass to an extrapolated mass function, the cluster mass was estimated as $M=(2.65\\pm0.57...

  3. Validation predictions of a 13 m/s cross-wind fire for Fuego and the University of Waterloo dataset.

    SciTech Connect (OSTI)

    Brown, Alexander L.; Evans, Gregory Herbert (Sandia National Laboratories, Livermore, CA); Gill, Walter; Jarboe, Daniel T. (Sandia National Laboratories, Livermore, CA)

    2008-03-01

    Detailed herein are the results of a validation comparison. The experiment involved a 2 meter diameter liquid pool of Jet-A fuel in a 13 m/s crosswind. The scenario included a large cylindrical blocking object just down-stream of the fire. It also included seven smaller calorimeters and extensive instrumentation. The experiments were simulated with Fuego. The model included several conduction regions to model the response of the calorimeters, the floor, and the large cylindrical blocking object. A blind comparison was used to compare the simulation predictions with the experimental data. The more upstream data compared very well with the simulation predictions. The more downstream data did not compare very well with the simulation predictions. Further investigation suggests that features omitted from the original model contributed to the discrepancies. Observations are made with respect to the scenario that are aimed at helping an analyst approach a comparable problem in a way that may help improve the potential for quantitative accuracy.

  4. The production of ultra-high purity single isotopes or tailored isotope mixtures by ICP-MS

    SciTech Connect (OSTI)

    Liezers, Martin; Farmer, Orville T.; Dion, Michael P.; Thomas, Linda MP; Eiden, Gregory C.

    2015-01-01

    We report the development and testing of a simple collector arrangement for a commercial quadrupole ICP-MS that for the first time has been used to produce small quantities of highly enriched (>99.99%) single isotopes, with deposition rates >10 ng/hour. The collector assembly replaces the standard instrument detector allowing for implantation with simultaneous monitoring of the incident ion current. Even under zero bias implant conditions, low energy (<10 eV), ion collection efficiency was observed to be very high ~99%. 151Eu ion currents of 0.1-0.5 nA were collected on a simple, planar foil without resorting to any type of cup configuration. Recovery of the enriched isotope from such foils is much simpler than from a more complex cup configuration. High rejection of adjacent mass isotopes was demonstrated by selectively implanting 167Er without any discernible co-implantation of 166Er and 168Er. The important analytical possibilities of the new approach to isotope ratio measurement, tracer purification and radiation measurements are discussed.

  5. ROSAT HRI Detection of the 16 ms Pulsar PSR J0537-6910 Inside Supernova Remnant N157B

    E-Print Network [OSTI]

    Wang, Q D

    1998-01-01

    Based on a deep ROSAT HRI observation, we have detected a pulsed signal in the 0.1-2 keV band from PSR J0537-6910 --- the recently discovered pulsar associated with the supernova remnant N157B in the Large Magellanic Cloud. The measured pulse period 0.01611548182 ms (+- 0.02 ns), Epoch MJD 50540.5, gives a revised linear spin-down rate of $5.1271 \\times 10^{-14} s s^{-1}$, slightly greater than the previously derived value. The narrow pulse shape (FWHM = 10% duty cycle) in the ROSAT band resembles those seen in both XTE and ASCA data (> 2 keV), but there is also marginal evidence for an interpulse. This ROSAT detection enables us to locate the pulsar at R.A., Dec (J2000) = $5^h37^m47^s.2, -69^\\circ 10' 23''$. With its uncertainty $\\sim 3''$, this position coincides with the centroid of a compact X-ray source. But the pulsed emission accounts for only about 10% of the source luminosity $\\sim 2 \\times 10^{36} ergs^{-1}$ in the 0.1-2 keV band. These results support our previous suggestions: (1) The pulsar is mov...

  6. Magnetic resonance as a structural probe of a uranium (VI) sol-gel process

    SciTech Connect (OSTI)

    King, C.M.; Thompson, M.C.; Buchanan, B.R. [Westinghouse Savannah River Co., Aiken, SC (United States); King, R.B. [Georgia Univ., Athens, GA (United States). Dept. of Chemistry; Garber, A.R. [South Carolina Univ., Columbia, SC (United States). Dept. of Chemistry

    1989-12-31

    NMR investigations on the ORNL process for sol-gel synthesis of microspherical nuclear fuel (UO{sub 2}), has been useful in sorting out the chemical mechanism in the sol-gel steps. {sup 13}C, {sup 15}N, and {sup 1}H NMR studies on the HMTA gelation agent (Hexamethylene tetramine, C{sub 6}H{sub l2}N{sub 4}) has revealed near quantitative stability of this adamantane-like compound in the sol-Gel process, contrary to its historical role as an ammonia source for gelation from the worldwide technical literature. {sub 17}0 NMR of uranyl (UO{sub 2}{sup ++}) hydrolysis fragments produced in colloidal sols has revealed the selective formation of a uranyl trimer, [(UO{sub 2}){sub 3}({mu}{sub 3}-O)({mu}{sub 2}-OH){sub 3}]{sup +}, induced by basic hydrolysis with the HMTA gelation agent. Spectroscopic results show that trimer condensation occurs during sol-gel processing leading to layered polyanionic hydrous uranium oxides in which HMTAH{sup +} is occluded as an ``intercalation`` cation. Subsequent sol-gel processing of microspheres by ammonia washing results in in-situ ion exchange and formation of a layered hydrous ammonium uranate with a proposed structural formula of (NH{sub 4}){sub 2}[(UO{sub 2}){sub 8}O{sub 4}(OH){sub 10}] {center_dot} 8H{sub 2}0. This compound is the precursor to sintered U0{sub 2} ceramic fuel.

  7. Magnetic resonance as a structural probe of a uranium (VI) sol-gel process

    SciTech Connect (OSTI)

    King, C.M.; Thompson, M.C.; Buchanan, B.R. (Westinghouse Savannah River Co., Aiken, SC (United States)); King, R.B. (Georgia Univ., Athens, GA (United States). Dept. of Chemistry); Garber, A.R. (South Carolina Univ., Columbia, SC (United States). Dept. of Chemistry)

    1989-01-01

    NMR investigations on the ORNL process for sol-gel synthesis of microspherical nuclear fuel (UO{sub 2}), has been useful in sorting out the chemical mechanism in the sol-gel steps. {sup 13}C, {sup 15}N, and {sup 1}H NMR studies on the HMTA gelation agent (Hexamethylene tetramine, C{sub 6}H{sub l2}N{sub 4}) has revealed near quantitative stability of this adamantane-like compound in the sol-Gel process, contrary to its historical role as an ammonia source for gelation from the worldwide technical literature. {sub 17}0 NMR of uranyl (UO{sub 2}{sup ++}) hydrolysis fragments produced in colloidal sols has revealed the selective formation of a uranyl trimer, ((UO{sub 2}){sub 3}({mu}{sub 3}-O)({mu}{sub 2}-OH){sub 3}){sup +}, induced by basic hydrolysis with the HMTA gelation agent. Spectroscopic results show that trimer condensation occurs during sol-gel processing leading to layered polyanionic hydrous uranium oxides in which HMTAH{sup +} is occluded as an intercalation'' cation. Subsequent sol-gel processing of microspheres by ammonia washing results in in-situ ion exchange and formation of a layered hydrous ammonium uranate with a proposed structural formula of (NH{sub 4}){sub 2}((UO{sub 2}){sub 8}O{sub 4}(OH){sub 10}) {center dot} 8H{sub 2}0. This compound is the precursor to sintered U0{sub 2} ceramic fuel.

  8. The Origin of the Whig Party

    E-Print Network [OSTI]

    McCluggage, Robert Tyler

    1912-06-04

    strange, tne wonder lies in xne iacx %ua.z so many were iea xo uelieve contrariwise. In tracing movements wnicn imaiiy grew into aistmctive parties, ana ultimately into xne wnig party, it is necessary uo study tms perioa 01 "gooa leeamgs" so pregnant... giving information concerning the suppression of tne establisnment at Amelia island and trans- 3 mitting the papers concerned tnerewitn. Adams tnought tnat tne measures in relation to Amelia island, South America, and Spain weee "laying the foundation...

  9. POT FISHING IN THE VIRGIN ISLANDS .T. B.. Sylvest 'I' and . F. Damm nn

    E-Print Network [OSTI]

    '13\\,,011' '-. _ . _ ............. . ,0 Fig. 1 - Lo, lLon i1 f t..." u~.o lslJ.ods. St. ThlS stud) "as nl.llJ..:: In (:0\\.)t-~rJ.u0n "1, but wood ( r p sapllngs) IS gen rally us d. I'unn Is ar oval and ar> t >rmlnated 10 a right angle facing th

  10. Ultrasound enhanced process for extracting metal species in supercritical fluids

    DOE Patents [OSTI]

    Wai, Chien M.; Enokida, Youichi

    2006-10-31

    Improved methods for the extraction or dissolution of metals, metalloids or their oxides, especially lanthanides, actinides, uranium or their oxides, into supercritical solvents containing an extractant are disclosed. The disclosed embodiments specifically include enhancing the extraction or dissolution efficiency with ultrasound. The present methods allow the direct, efficient dissolution of UO2 or other uranium oxides without generating any waste stream or by-products.

  11. Nuclear carrier business volume projections, 1980-2000

    SciTech Connect (OSTI)

    Lebo, R.G.; McKeown, M.S.; Rhyne, W.R.

    1980-05-01

    The expected number of shipments of commodities in the nuclear fuel cycle are projected for the years 1980 thru 2000. Projections are made for: yellowcake (U/sub 3/O/sub 8/); natural, enriched and reprocessed uranium hexafluoride (UF/sub 6/); uranium dioxide powder (UO/sub 2/); plutonium dioxide powder (PuO/sub 2/); fresh UO/sub 2/ and mixed oxide (MOX) fuel; spent UO/sub 2/ fuel; low-level waste (LLW); transuranic (TRU) waste; high-activity TRU waste; high-level waste (HLW), and cladding hulls. Projections are also made for non-fuel cycle commodities such as defense TRU wastes and institutional wastes, since they also are shipped by the commercial transportation industry. Projections of waste shipments from LWRs are based on the continuation of current volume reduction and solidification techniques now used by the utility industry. Projections are also made based on a 5% per year reduction in LWR waste volume shipped which is assumed to occur as a result of increased implementation of currently available volume reduction systems. This assumption results in a net 64% decrease in the total waste shipped by the year 2000. LWR waste shipment projections, and essentially all other projections for fuel cycle commodities covered in this report, are normalized to BWR and PWR generating capacity projections set forth by the Department of Energy (DOE) in their low-growth projection of April, 1979. Therefore these commodity shipment projections may be altered to comply with future changes in generating capacity projections. Projected shipments of waste from the reprocessing of spent UO/sub 2/ fuel are based on waste generation rates proposed by Nuclear Fuels Services, Allied-General Nuclear Services, Exxon Nuclear, and the DOE. Reprocessing is assumed to begin again in 1990, with mixed oxide fresh fuel available for shipment by 1991.

  12. Generic report on health effects for the US Gaseous Diffusion Plants. Sect. 8, Pt. 1

    SciTech Connect (OSTI)

    Just, R.A.; Emler, V.S.

    1984-06-01

    Toxic substances present in uranium enrichment plants include uranium hexafluoride (UF/sub 6/), hydrogen fluoride (HF), uranyl fluoride (UO/sub 2/F/sub 2/), chlorine (Cl/sub 2/), chlorine trifluoride (ClF/sub 3/), fluorine (F/sub 2/), uranium tetrafluoride (UF/sub 4/), and technetium (Tc). The current knowledge of the expected health effects of acute exposures to these substances is described. 10 references, 2 figures, 6 tables. (ACR)

  13. Accommodation of Uranium into the Garnet Structure Sergey V.Yudintsev1

    E-Print Network [OSTI]

    Utsunomiya, Satoshi

    Accommodation of Uranium into the Garnet Structure Sergey V.Yudintsev1 , Marya I. Lapina1 for uranium, the CaO ­ Fe2O3 ­ Al2O3 ­ SiO2 ­ ZrO2 ­ Gd2O3 ­ UO2 system was studied. Experiments were- corporation of U was found to be greatly dependent on the phase composition. Uranium content decreased from 18

  14. Universal fuel basket for use with an improved oxide reduction vessel and electrorefiner vessel

    DOE Patents [OSTI]

    Herrmann, Steven D. (Idaho Falls, ID); Mariani, Robert D. (Idaho Falls, ID)

    2002-01-01

    A basket, for use in the reduction of UO.sub.2 to uranium metal and in the electrorefining of uranium metal, having a continuous annulus between inner and outer perforated cylindrical walls, with a screen adjacent to each wall. A substantially solid bottom and top plate enclose the continuous annulus defining a fuel bed. A plurality of scrapers are mounted adjacent to the outer wall extending longitudinally thereof, and there is a mechanism enabling the basket to be transported remotely.

  15. Ms. Maria Galanti

    Office of Environmental Management (EM)

    of PORTS in the area identified as Quadrant IV in the Quadrant IV RFI Final Report (DOE 1996). 1.3 SITE DESCRIPTION AND HISTORY The X-533 was a high voltage switchyard that...

  16. Is LA-12152-MS

    Office of Scientific and Technical Information (OSTI)

    thus, their structural applications have focused on heat engines, turbine blades, and reactor cores. Their "brittle" characteristic (linear or near-linear stress-strain...

  17. LA-23336-MS

    Office of Scientific and Technical Information (OSTI)

    P. Butt Carl A. Beard - N A T I O N A L L A B O R A T O R Y Los Alarnos. New Mexico 87545 DISCLAIMER This report was prepared as an account of work sponsored by an agenq...

  18. Hagen Maraun MS Candidate

    E-Print Network [OSTI]

    Gray, Matthew

    & Platzek,2005) · Separates fractions effectively Lignin extracted in the organosolv) · harvested in East Tennessee · average length 2 inches · average of 8% moisture 190 proof (EtOH 190 proof) 3. and DI Water (H2O) Ratio 16:34:50 (NREAL

  19. LA-11224-MS

    Office of Scientific and Technical Information (OSTI)

    was also performed. The pressure and temperature of the production and observation wells, as well as the o u t l e t enthalpy, are presented i n Figures 8-10. A s can be...

  20. MS, II-J

    Office of Legacy Management (LM)

    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 Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE-SessionsSouth DakotaRobbins and MyersHr. Anthony V. Andolina:I.)p'J abET/\ThisI'