Sample records for le lebanon pu

  1. Lebanon, Indiana: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

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  2. Lebanon, Ohio: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I Geothermal Pwer Plant Jump to:Landowners and Wind EnergyIndiana: EnergyLands in WashingtonLebanon,York:Ohio:

  3. surface si faible qu'elle n'a pu encore tre apprcie. Il faut en conclure, dans l'hypothse de Volta, que le rayon de la sphrc

    E-Print Network [OSTI]

    Boyer, Edmond

    - cien de Bonn croie nécessaire, pour l'explication du phénomène de Peltier, qu'une fraction (en tout cas; PAR M. A. ROSENSTIEHL. La question qui doit être résolue dans cette Note est celle de savoir si le

  4. Elastic properties of Pu metal and Pu-Ga alloys

    SciTech Connect (OSTI)

    Soderlind, P; Landa, A; Klepeis, J E; Suzuki, Y; Migliori, A

    2010-01-05T23:59:59.000Z

    We present elastic properties, theoretical and experimental, of Pu metal and Pu-Ga ({delta}) alloys together with ab initio equilibrium equation-of-state for these systems. For the theoretical treatment we employ density-functional theory in conjunction with spin-orbit coupling and orbital polarization for the metal and coherent-potential approximation for the alloys. Pu and Pu-Ga alloys are also investigated experimentally using resonant ultrasound spectroscopy. We show that orbital correlations become more important proceeding from {alpha} {yields} {beta} {yields} {gamma} plutonium, thus suggesting increasing f-electron correlation (localization). For the {delta}-Pu-Ga alloys we find a softening with larger Ga content, i.e., atomic volume, bulk modulus, and elastic constants, suggest a weakened chemical bonding with addition of Ga. Our measurements confirm qualitatively the theory but uncertainties remain when comparing the model with experiments.

  5. Journal 9 : lundi 2 avril 2012 (dernier journal du 1er Pendant le transit d'hier entre la radiale 7W et Abidjan, nous avons pu encore retrouver nos

    E-Print Network [OSTI]

    navire ANTEA de l'IRD était basé ici pendant plusieurs années jusqu'en 2002 (avant son rapatriement en France suite à de gros problèmes techniques immobilisant le navire depuis 2000...) ! L'actuel commandant campagnes PIRATA faites avec l'ANTEA de 1997 à 1999 ! Tous les objectifs de cette première partie de la

  6. Lebanon, New Hampshire: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I Geothermal Pwer Plant Jump to:Landowners and Wind EnergyIndiana: EnergyLands in WashingtonLebanon,

  7. Lebanon, New York: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I Geothermal Pwer Plant Jump to:Landowners and Wind EnergyIndiana: EnergyLands in WashingtonLebanon,York:

  8. South Lebanon, Oregon: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro Industries Pvt LtdShawangunk, NewSingaporeSonix JapanCalifornia:(RECP) in DevelopingLebanon,

  9. Mount Lebanon, Pennsylvania: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I Geothermal Pwer Plant JumpMarysville,Missoula,MontereyHill, California:Morse,WaveLebanon, Pennsylvania:

  10. City of Lebanon, Indiana (Utility Company) | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model, click here.TelluricPowerCityJonesville, LouisianaLansing, MichiganLasLebanon,

  11. Maintaining rainwater harvesting practices in southern Lebanon : the kaza of Tyre

    E-Print Network [OSTI]

    Hayek, Carolyn, M. C. P. Massachusetts Institute of Technology

    2009-01-01T23:59:59.000Z

    Despite relatively extensive surface water and groundwater networks, along with abundant rainfall, Lebanon is facing water scarcity due to factors such as pollution of freshwater resources, climate change, population growth, ...

  12. Land development approaches in the context of land scarcity : case study, Byblos, Lebanon

    E-Print Network [OSTI]

    Asdourian, Avedis

    1986-01-01T23:59:59.000Z

    The objective of this study is to provide a general understanding for guiding urban development in secondary cities in Lebanon. An existing site in the Byblos Metropolitan Area is utilized as a reference to this study. The ...

  13. Programs and precedents : future prospects of housing theory and practice in Lebanon

    E-Print Network [OSTI]

    Jabr, Abdul-Halim

    1988-01-01T23:59:59.000Z

    The object of this study is two-fold. The first is to critically understand the limits of a given set of housing principles within the exigencies of a specific context, that of Greater Beirut, Lebanon, a site of rapid ...

  14. Economical Production of Pu-238

    SciTech Connect (OSTI)

    Steven D. Howe; Douglas Crawford; Jorge Navarro; Terry Ring

    2013-02-01T23:59:59.000Z

    All space exploration missions traveling beyond Jupiter must use radioisotopic power sources for electrical power. The best isotope to power these sources is plutonium-238. The US supply of Pu-238 is almost exhausted and will be gone within the next decade. The Department of Energy has initiated a production program with a $10M allocation from NASA but the cost is estimated at over $100 M to get to production levels. The Center for Space Nuclear Research has conceived of a potentially better process to produce Pu-238 earlier and for significantly less cost. The new process will also produce dramatically less waste. Potentially, the front end costs could be provided by private industry such that the government only had to pay for the product produced. Under a NASA Phase I NIAC grant, the CSNR has evaluated the feasibility of using a low power, commercially available nuclear reactor to produce at least 1.5 kg of Pu-238 per year. The impact on the neutronics of the reactor have been assessed, the amount of Neptunium target material estimated, and the production rates calculated. In addition, the size of the post-irradiation processing facility has been established. In addition, a new method for fabricating the Pu-238 product into the form used for power sources has been identified to reduce the cost of the final product. In short, the concept appears to be viable, can produce the amount of Pu-238 needed to support the NASA missions, can be available within a few years, and will cost significantly less than the current DOE program.

  15. Controls on Soluble Pu Concentrations in PuO2/Magnetite Suspensions

    SciTech Connect (OSTI)

    Felmy, Andrew R.; Moore, Dean A.; Pearce, Carolyn I.; Conradson, Steven D.; Qafoku, Odeta; Buck, Edgar C.; Rosso, Kevin M.; Ilton, Eugene S.

    2012-11-06T23:59:59.000Z

    Time-dependent reduction of PuO2(am) was studied over a range of pH values in the presence of aqueous Fe(II) and magnetite (Fe3O4) nanoparticles. At early time frames (up to 56 days) very little aqueous Pu was mobilized from PuO2(am), even though measured pH and redox potentials, coupled to equilibrium thermodynamic modeling indicated the potential for significant reduction of PuO2(am) to relatively soluble Pu(III). Introduction of Eu(III) or Nd(III) to the suspensions as competitive cations to displace possible sorbed Pu(III) resulted in the release of significant concentrations of aqueous Pu. However, the similarity of aqueous Pu concentrations that resulted from the introduction of Eu(III)/Nd(III) to suspensions with and without magnetite indicated that the Pu was displaced from the PuO2(am), not from magnetite. The fact that soluble forms of Pu can be displaced from the surface of PuO2(am) represents a potential, but previously unidentified, source of Pu to aqueous solution or subsurface groundwaters.

  16. Delayed neutron measurements for Th-232, Np-237, Pu-239, Pu-241 and depleted uranium

    E-Print Network [OSTI]

    Stone, Joseph C.

    2001-01-01T23:59:59.000Z

    The neutron emission rates from five very pure actinide samples (Th-232, Np-237, Pu-239, Pu-241 and depleted uranium) were measured following equilibrium irradiation in fast and thermal neutron fluxes. The relative abundances (alphas) for the first...

  17. Use of plutonium isotope activity ratios in dating recent sediments. [/sup 238/Pu//sup 239/Pu + /sup 240/Pu

    SciTech Connect (OSTI)

    Beasley, T. M.

    1982-01-01T23:59:59.000Z

    The majority of plutonium presently in the biosphere has come from the testing of nuclear devices. In the early 1950s, the Pu-238/239+240 activity ratio of fallout debris was > 0.04; in the more extensive test series of 1961 to 1962, the Pu-238/239+240 activity ratios were quite consistent at 0.02 to 0.03 and maximum fallout delivery occurred in mid-1963. A significant perturbation in Pu isotope activity ratios occurred in mid-1966 with the deposition of Pu-238 from the SNAP-9A reentry and burn-up. Recently deposited sediments have recorded these events and where accumulation rates are rapid (> 1 cm/y), changes in Pu isotope activity ratios can be used as a geochronological tool.

  18. Sources for Pu in near surface air

    SciTech Connect (OSTI)

    Hartmann, G.; Thom, C.; Baechmann, K.

    1989-01-01T23:59:59.000Z

    This paper provides evidence that most of the Pu in the near surface air today is due to resuspension. Vertical and particle size distribution in near surface air over a period of three years were measured. The seasonal variations of Pu in air and the influence of meteorological parameters on these variations are shown. Samples were taken before the Chernobyl accident in an area where only Pu fallout from the atmospheric nuclear tests of the early sixties occurs. The comparison of the behavior of Pu with other trace elements, which were also measured, showed similar behavior of Pu and elements like Ca, Ti and Fe in near surface air. This confirms that most Pu is resuspended because the main source for these elements in air is the soil surface. Resuspension factors and resuspension rate are estimated for all measured elements. A resuspension factor of 0.8 X 10(-8) m-1 and a resuspension rate of 0.09 X 10(-9) s-1 is calculated for Pu.

  19. Presented in Concord, Merrimack and West Lebanon, NH by the UNHCE Geospatial Outreach Program ArcGIS Workshops Fall 2012

    E-Print Network [OSTI]

    New Hampshire, University of

    , as well as, conduct geospatial analysis. Participants will learn to: symbolize GIS data; add labelsPresented in Concord, Merrimack and West Lebanon, NH by the UNHCE Geospatial Outreach Program Arc

  20. MCSNA: Experimental Benchmarking of Pu Electronic Structure

    SciTech Connect (OSTI)

    Tobin, J G

    2007-01-29T23:59:59.000Z

    The objective of this work is to develop and/or apply advanced diagnostics to the understanding of aging of Pu. Advanced characterization techniques such as photoelectron and x-ray absorption spectroscopy will provide fundamental data on the electronic structure of Pu phases. These data are crucial for the validation of the electronic structure methods. The fundamental goal of this project is to narrow the parameter space for the theoretical modeling of Pu aging. The short-term goal is to perform experiments to validate electronic structure calculations of Pu. The long-term goal is to determine the effects of aging upon the electronic structure of Pu. Many of the input parameters for aging models are not directly measurable. These parameters will need to be calculated or estimated. Thus a First Principles-Approach Theory is needed, but it is unclear what terms are important in the Hamiltonian. (H{Psi} = E{Psi}) Therefore, experimental data concerning the 5f electronic structure are needed, to determine which terms in the Hamiltonian are important. The data obtained in this task are crucial for reducing the uncertainty of Task LL-01-developed models and predictions. The data impact the validation of electronic structure methods, the calculation of defect properties, the evaluation of helium diffusion, and the validation of void nucleation models. The importance of these activities increases if difficulties develop with the accelerating aging alloy approach.

  1. Redefining design criteria for Pu-238 gloveboxes

    SciTech Connect (OSTI)

    Acosta, S.V.

    1998-12-31T23:59:59.000Z

    Enclosures for confinement of special nuclear materials (SNM) have evolved into the design of gloveboxes. During the early stages of glovebox technology, established practices and process operation requirements defined design criteria. Proven boxes that performed and met or exceeded process requirements in one group or area, often could not be duplicated in other areas or processes, and till achieve the same success. Changes in materials, fabrication and installation methods often only met immediate design criteria. Standardization of design criteria took a big step during creation of ``Special-Nuclear Materials R and D Laboratory Project, Glovebox standards``. The standards defined design criteria for every type of process equipment in its most general form. Los Alamos National Laboratory (LANL) then and now has had great success with Pu-238 processing. However with ever changing Environment Safety and Health (ES and H) requirements and Ta-55 Facility Configuration Management, current design criteria are forced to explore alternative methods of glovebox design fabrication and installation. Pu-238 fuel processing operations in the Power Source Technologies Group have pushed the limitations of current design criteria. More than half of Pu-238 gloveboxes are being retrofitted or replaced to perform the specific fuel process operations. Pu-238 glovebox design criteria are headed toward process designed single use glovebox and supporting line gloveboxes. Gloveboxes that will house equipment and processes will support TA-55 Pu-238 fuel processing needs into the next century and extend glovebox expected design life.

  2. A=3He (2010PU04)

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

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  3. Pu Qian | Photosynthetic Antenna Research Center

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible forPortsmouth/Paducah47,193.70COMMUNITY AEROSOL INLET J.-L.Pseudogaps,Pu Qian Pu Qian

  4. THERMOSTATICS AND KINETICS OF TRANSFORMATIONS IN PU-BASED ALLOYS

    SciTech Connect (OSTI)

    Turchi, P; Kaufman, L; Liu, Z

    2006-06-30T23:59:59.000Z

    CALPHAD assessment of the thermodynamic properties of a series of Pu-based alloys is briefly presented together with some results on the kinetics of phase formation and transformations in Pu-Ga alloys.

  5. Core reduction sequences from El-Masloukh, and Acheuleo-Yabrudian site in Lebanon

    E-Print Network [OSTI]

    Terry, Karisa

    2000-01-01T23:59:59.000Z

    ) characterizes this phase as a period of exploration and unsystematic excavations. Turville- Petre (1927) was a major contributor to research during this period. At the sites of Emireh and Zuttiyeh in Israel, Turville-Petre demonstrated that fossil hominids... Cave (Garrod and Bate 1937; Jelinek 1982) and Zuttiyeh Cave (Turville-Petre 1927) in Israel, Adlun Caves (Roe 1983) in Lebanon, and Yabrud I (Rust 1950; Solecki and Solecki 1987-88) and El Kowm Basin (Copeland and Hours 1983) in Syria. Absolute ages...

  6. Complementary Pu Resuspension Study at Palomares, Spain

    SciTech Connect (OSTI)

    Shinn, J

    2002-10-01T23:59:59.000Z

    Soil in an area near Palomares, Spain, was contaminated with plutonium as a result of a mid-air collision of U.S. military aircraft in January 1966. The assessment for potential inhalation dose can be found in Iranzo et al., (1987). Long-term monitoring has been used to evaluate remedial actions (Iranzo et al., 1988) and there are many supporting studies of the Pu contamination at Palomares that have been carried out by the Centro de Investigaciones Energeticas, Medioambientales y Tecnologicas (CIEMAT) in Madrid. The purpose of this study is to evaluate the resuspension of Pu from the soil in terms of Pu-concentrations in air and resuspension rates in a complementary investigation to those of CIEMAT but in an intensive short-term field effort. This study complements the resuspension studies of CIEMAT at Palomares with additional information, and with confirmation of their previous studies. Observed mass loadings (M) were an average of 70 mg/m{sup 3} with peaks in the daytime of 130 mg/m{sup 3} and low values at night below 30 {micro}g/m{sup 3}. The Pu-activity of aerosols (A) downwind of plot 2-1 was 0.12 Bq/g and the enhancement factor (E{sub f}) had a value of 0.3, which is low but similar to a typical value of 0.7 for other undisturbed sites. This E{sub f} value may increase further away from ground zero. The particle size distribution of the Pu in air measured by cascade impactors was approximately lognormal with a median aerodynamic diameter of 3.7 {micro}m and a geometric standard deviation of 3.5 in the respirable range. This peak midway between 1 ? m and 10 {micro}m in the respirable range is commonly observed. Daily fluctuations in the Pu concentration in air (C) detected by the UHV were lognormally distributed with a geometric standard deviation of 4.9 indicating that the 98th percentile would be 24 times as high as the median. Downwind of plot 2-1 the mean Pu concentration in air, C, was 8.5 {micro}Bq/m{sup 3}. The resuspension factor (Sf) was 2.4 x 10{sup -10} m{sup -1} and agrees very well with the values between 10{sup -10} m{sup -1} and 10{sup -9} m{sup -1} previously reported. We observed a mean Pu/Am ratio of 7.1 with a relative variation of 30%, which compares well with a mean value of 6.5 for nearby plot 2-2. The resuspension rate (R) was in the middle of the range, 10{sup -11} s{sup -1} to 10{sup -12} s{sup -1} as observed in other stable sites, and indicates low potential for Pu redistribution.

  7. Pu speciation in actual and simulated aged wastes

    SciTech Connect (OSTI)

    Lezama-pacheco, Juan S [Los Alamos National Laboratory; Conradson, Steven D [Los Alamos National Laboratory

    2008-01-01T23:59:59.000Z

    X-ray Absorption Fine Structure Spectroscopy (XAFS) at the Pu L{sub II/III} edge was used to determine the speciation of this element in (1) Hanford Z-9 Pu crib samples, (2) deteriorated waste resins from a chloride process ion-exchange purification line, and (3) the sediments from two Waste Isolation Pilot Plant Liter Scale simulant brine systems. The Pu speciation in all of these samples except one is within the range previously displayed by PuO{sub 2+x-2y}(OH){sub y}{center_dot}zH{sub 2}O compounds, which is expected based on the putative thermodynamic stability of this system for Pu equilibrated with excess H{sub 2}O and O{sub 2} under environmental conditions. The primary exception was a near neutral brine experiment that displayed evidence for partial substitution of the normal O-based ligands with Cl{sup -} and a concomitant expansion of the Pu-Pu distance relative to the much more highly ordered Pu near neighbor shell in PuO{sub 2}. However, although the Pu speciation was not necessarily unusual, the Pu chemistry identified via the history of these samples did exhibit unexpected patterns, the most significant of which may be that the presence of the Pu(V)-oxo species may decrease rather than increase the overall solubility of these compounds. Several additional aspects of the Pu speciation have also not been previously observed in laboratory-based samples. The molecular environmental chemistry of Pu is therefore likely to be more complicated than would be predicted based solely on the behavior of PuO{sub 2} under laboratory conditions.

  8. 7/1/2003 00101 Marcare con una crocetta le risposte ritenute corrette e consegnare la scheda al termine della prima

    E-Print Network [OSTI]

    Frosini, Patrizio

    del tipo n Ã? (n + 1) A) ha infinite soluzioni. B) pu`o essere impossibile. C) ha una sola soluzione. D) se `e omogeneo ha una sola soluzione. #12;7/1/2003 00110 Marcare con una crocetta le risposte omogeneo ha una sola soluzione. B) ha una sola soluzione. C) pu`o essere impossibile. D) ha infinite

  9. Hindcast of oil-spill pollution during the Lebanon crisis in the Eastern Mediterranean, JulyAugust 2006

    E-Print Network [OSTI]

    Georgiou, Georgios

    Hindcast of oil-spill pollution during the Lebanon crisis in the Eastern Mediterranean, July, Athens, Greece a r t i c l e i n f o Keywords: Lebanese oil-pollution event Oil-spill modeling Oceanography Network http://www.moon-oceanforecasting.eu) pro- vides near-real-time information on oil

  10. The Relationship of Student Dispositions and Teacher Characteristics with the Mathematics Achievement of Students in Lebanon and Six Arab Countries in TIMSS 2007.

    E-Print Network [OSTI]

    Younes, Rayya

    2013-03-22T23:59:59.000Z

    The present study is divided into two parts. The first part examines the performance of Lebanese students in public and private schools in Lebanon in 8th grade using the TIMSS 2007 data. The effects of students’ dispositions and teacher...

  11. A=3H (2010PU04)

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

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  12. A=3Li (2010PU04)

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less2012KE01)93TI07)7AJ02) (See the98TI06)2010PU04) GENERAL: The

  13. A=3n (2010PU04)

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less2012KE01)93TI07)7AJ02) (See the98TI06)2010PU04)

  14. Le hakka, par Hilary Chappell et Laurent Sagart Le dialecte hakka est parl par quelque 35 millions de locuteurs, principalement dans le nord du

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    répandu hors de Chine, en particulier en Malaisie, dans le nord de Bornéo, en Guyane, au Surinam et à ont pu entraîner une forte animosité avec les populations chinoises plus anciennement établies. Cette («Puntis») dans la province de Canton. Méprisés par la société cantonaise, et assimilés aux She, population

  15. Nuclear magnetic resonance offers new insights into Pu 239

    E-Print Network [OSTI]

    - 1 - Nuclear magnetic resonance offers new insights into Pu 239 May 29, 2012 Nuclear magnetic signal of plutonium 239's unique nuclear magnetic resonance signature has been detected by scientists on the subject, "Observation of 239 Pu Nuclear Magnetic Resonance," was published in the May 18 issue of Science

  16. Pu-238 fuel form activities, January 1-31, 1983

    SciTech Connect (OSTI)

    Not Available

    1983-03-01T23:59:59.000Z

    This monthly report for /sup 238/Pu Fuel Form Activities has two main sections: SRP-PuFF facility and SRL Fuel Form Activities. The program status, budget information, and milestone schedules are discussed in each main section. The Work Breakdown Structure (WBS) for this program is shown. Only one monthly report per year is processed for EDB.

  17. Sputtering yield of Pu bombarded by fission Fragments from Cf

    SciTech Connect (OSTI)

    Danagoulian, Areg [Los Alamos National Laboratory; Klein, Andreas [Los Alamos National Laboratory; Mcneil, Wendy V [Los Alamos National Laboratory; Yuan, Vincent W [Los Alamos National Laboratory

    2008-01-01T23:59:59.000Z

    We present results on the yield of sputtering of Pu atoms from a Pu foil, bombarded by fission fragments from a {sup 252}Cf source in transmission geometry. We have found the number of Pu atoms/incoming fission fragments ejected to be 63 {+-} 1. In addition, we show measurements of the sputtering yield as a function of distance from the central axis, which can be understood as an angular distribution of the yield. The results are quite surprising in light of the fact that the Pu foil is several times the thickness of the range of fission fragment particles in Pu. This indicates that models like the binary collision model are not sufficient to explain this behavior.

  18. Surrogate studies of the Pu-Be reaction II

    SciTech Connect (OSTI)

    Hanrahan, R.J. Jr.; Thoma, D.J.; Jacobson, L.A.; Zocco, T.G.; Lowery, J.L.; Pereyra, R.

    1997-09-01T23:59:59.000Z

    Unusual circumstances could result in contact between molten Pu and solid Be components. Since intimate contact between Pu and Be results in an intense neutron source via the ({alpha},n) reaction it is very difficult to study the kinetics of the Pu-Be interaction. The published Pu-Be phase diagram is characterized by a single intermetallic compound, PuBe{sub 13} which exists in equilibrium with all of the Pu allotropes, and two eutectics with no measurable solubility range in any of the solid phases. This pattern is known to be followed by all of the rare earths, and some of the actinides. Although most of these phase diagrams are poorly defined in terms of solubility and the location of the eutectics, all have been characterized to the extent of having a single intermetallic compound with a melting point in excess of 1,500 C. Consequently it seems reasonable that by studying the reactions of these other metals with Be, it should be possible to predict kinetics and mechanisms of the Pu-Be interaction using known physical and thermodynamic properties. The most obvious difference between Pu and potential surrogate elements is in their melting points. This is not the most important consideration however due to the presence of the two eutectics in each of the M-Be systems (where M is used to refer to any of the surrogates). In the last meeting of this series the authors reported the results of studies using Yb as a surrogate for Pu. Here they will discuss the results obtained using Sm and Ce and contrast them with the earlier results as well as with Pu-Be experiments conducted using very similar experimental conditions.

  19. Performance of Cladding on MOX Fuel with Low 240Pu/239Pu Ratio

    SciTech Connect (OSTI)

    McCoy, Kevin [Areva NP; Blanpain, Patrick [AREVA NP SAS; Morris, Robert Noel [ORNL

    2014-01-01T23:59:59.000Z

    The U.S. Department of Energy has decided to dispose of a portion of its surplus plutonium by reconstituting it into mixed oxide (MOX) fuel and irradiating it in commercial power reactors. As part of fuel qualification, four lead assemblies were manufactured and irradiated to a maximum fuel rod average burnup of 47.3 MWd/kg heavy metal. This was the world s first commercial irradiation of MOX fuel with a 240Pu/239Pu ratio less than 0.10. Five fuel rods with varying burnups and plutonium contents were selected from one of the assemblies and shipped to Oak Ridge National Laboratory for hot cell examination. This paper discusses the results of those examinations with emphasis on cladding performance. Exams relevant to the cladding included visual and eddy current exams, profilometry, microscopy, hydrogen analysis, gallium analysis, and mechanical testing. There was no discernible effect of the type of MOX fuel on the performance of the cladding.

  20. Paris, le 7 aot 2014 Analyse de traces de plutonium dans les rivires ctires de

    E-Print Network [OSTI]

    Pouyanne, Nicolas

    1/2 Paris, le 7 août 2014 Analyse de traces de plutonium dans les rivières côtières de la région de premières mesures précises de l'isotopie du plutonium présent dans les sédiments radioactifs charriés par d'importantes émissions de radionucléides dans l'environnement et du plutonium (Pu) à l'état de

  1. Elastic properties of gamma-Pu by resonant ultrasound spectroscopy

    SciTech Connect (OSTI)

    Migliori, Albert [Los Alamos National Laboratory; Betts, J [Los Alamos National Laboratory; Trugman, A [Los Alamos National Laboratory; Mielke, C H [Los Alamos National Laboratory; Mitchell, J N [Los Alamos National Laboratory; Ramos, M [Los Alamos National Laboratory; Stroe, I [WORXESTER, MA

    2009-01-01T23:59:59.000Z

    Despite intense experimental and theoretical work on Pu, there is still little understanding of the strange properties of this metal. We used resonant ultrasound spectroscopy method to investigate the elastic properties of pure polycrystalline Pu at high temperatures. Shear and longitudinal elastic moduli of the {gamma}-phase of Pu were determined simultaneously and the bulk modulus was computed from them. A smooth linear and large decrease of all elastic moduli with increasing temperature was observed. We calculated the Poisson ratio and found that it increases from 0.242 at 519K to 0.252 at 571K.

  2. Method of removing Pu(IV) polymer from nuclear fuel reclaiming liquid

    DOE Patents [OSTI]

    Tallent, Othar K. (Oak Ridge, TN); Mailen, James C. (Oak Ridge, TN); Bell, Jimmy T. (Kingston, TN); Arwood, Phillip C. (Harriman, TN)

    1982-01-01T23:59:59.000Z

    A Pu(IV) polymer not extractable from a nuclear fuel reclaiming solution by conventional processes is electrolytically converted to Pu.sup.3+ and PuO.sub.2.sup.2+ ions which are subsequently converted to Pu.sup.4+ ions extractable by the conventional processes.

  3. Re-publication of the data from the BILL magnetic spectrometer: The cumulative $?$ spectra of the fission products of $^{235}$U, $^{239}$Pu, and $^{241}$Pu

    E-Print Network [OSTI]

    N. Haag; W. Gelletly; F. von Feilitzsch; L. Oberauer; W. Potzel; K. Schreckenbach; A. A. Sonzogni

    2014-05-30T23:59:59.000Z

    In the 1980s, measurements of the cumulative $\\beta$ spectra of the fission products following the thermal neutron induced fission of $^{235}$U, $^{239}$Pu, and $^{241}$Pu were performed at the magnetic spectrometer BILL at the ILL in Grenoble. This data was published in bins of 250 keV. In this paper, we re-publish the original data in a binning of 50 keV for $^{235}$U and 100 keV for $^{239}$Pu and $^{241}$Pu.

  4. Neutron Capture Cross Section Measurement on $^{238}$Pu at DANCE

    SciTech Connect (OSTI)

    Chyzh, A; Wu, C Y

    2011-02-14T23:59:59.000Z

    The proposed neutron capture measurement for {sup 238}Pu was carried out in Nov-Dec, 2010, using the DANCE array at LANSCE, LANL. The total beam-on-target time is about 14 days plus additional 5 days for the background measurement. The target was prepared at LLNL with the new electrplating cell capable of plating the {sup 238}Pu isotope simultaneously on both sides of the 3-{micro}m thick Ti backing foil. A total mass of 395 {micro}g with an activity of 6.8 mCi was deposited onto the area of 7 mm in diameter. The {sup 238}Pu sample was enriched to 99.35%. The target was covered by 1.4 {micro}m double-side aluminized mylar and then inserted into a specially designed vacuum-tight container, shown in Fig. 1, for the {sup 238}Pu containment. The container was tested for leaks in the vacuum chamber at LLNL. An identical container without {sup 238}Pu was made as well and used as a blank for the background measurement.

  5. Transuranic concentrations in reef and pelagic fish from the Marshall Islands. [/sup 239/Pu, /sup 240/Pu

    SciTech Connect (OSTI)

    Noshkin, V.E.; Eagle, R.J.; Wong, K.M.; Jokela, T.A.

    1980-09-01T23:59:59.000Z

    Concentrations of /sup 239 + 240/Pu are reported in tissues of several species of reef and pelagic fish caught at 14 different atolls in the northern Marshall Islands. Several regularities that are species dependent are evident in the distribution of /sup 239 + 240/Pu among different body tissues. Concentrations in liver always exceeded those in bone and concentrations were lowest in the muscle of all fish analyzed. A progressive discrimination against /sup 239 + 240/Pu was observed at successive trophic levels at all atolls except Bikini and Enewetak, where it was difficult to conclude if any real difference exists between the average concentration factor for /sup 239 + 240/Pu among all fish, which include bottom feeding and grazing herbivores, bottom feeding carnivores, and pelagic carnivores from different atoll locations. The average concentration of /sup 239 + 240/Pu in the muscle of surgeonfish from Bikini and Enewetak was not significantly different from the average concentrations determined in these fish at the other, lesser contaminated atolls. Concentrations among all 3rd, 4th, and 5th trophic level species are highest at Bikini where higher environmental concentrations are found. The reasons for the anomalously low concentrations in herbivores from Bikini and Enewetak are not known.

  6. Co-operation agreement between CERN and the National Council for Scientific Research, Lebanon (CNRS-L) concerning Scientific and Technical Co-operation in High-Energy Physics

    E-Print Network [OSTI]

    2015-01-01T23:59:59.000Z

    Co-operation agreement between CERN and the National Council for Scientific Research, Lebanon (CNRS-L) concerning Scientific and Technical Co-operation in High-Energy Physics

  7. Selection and Evaluation of a new Pu Density Measurement Fluid

    SciTech Connect (OSTI)

    Dziewinska, Krystyna [Los Alamos National Laboratory; Peters, Michael A [Los Alamos National Laboratory; Martinez, Patrick P [Los Alamos National Laboratory; Dziewinski, Jacek J [Los Alamos National Laboratory; Pugmire, David L [Los Alamos National Laboratory; Trujillo, Stephen M [Los Alamos National Laboratory; La Verne, Jake A [UNIV OF NOTRE DAME; Rajesh, P [UNIV OF NOTRE DAME

    2009-01-01T23:59:59.000Z

    This paper summarizes efforts leading to selection of a new fluid for the determination of the density of large Pu parts. Based on an extended literature search, perfluorotributylamine (FC-43) was chosen for an experimental study. Plutonium coupon corrosion studies were performed by exposing Pu to deaerated and aerated solutions and measuring corrosion gravimetrically. Corrosion rates were determined. Samples of deaerated and aerated perfuluorotributylamine (FC-43) were also irradiated with {sup 60}Co gamma rays (96 Gy/min) to various doses. The samples were extracted with NaOH and analyzed by IC and showed the presence of F and Cl{sup -}. The G-values were established. In surface study experiments Pu coupons were exposed to deaerated and aerated solutions of FC-43 and analyzed by X-ray photoelectron spectroscopy (XPS). The XPS data indicate that there is no detectable surface effect caused by the new fluid. In conclusion the FC-43 was determined to be a very effective and practical fluid for Pu density measurements.

  8. Atomic Structure and Phase Transformations in Pu Alloys

    SciTech Connect (OSTI)

    Schwartz, A J; Cynn, H; Blobaum, K M; Wall, M A; Moore, K T; Evans, W J; Farber, D L; Jeffries, J R; Massalski, T B

    2008-04-28T23:59:59.000Z

    Plutonium and plutonium-based alloys containing Al or Ga exhibit numerous phases with crystal structures ranging from simple monoclinic to face-centered cubic. Only recently, however, has there been increased convergence in the actinides community on the details of the equilibrium form of the phase diagrams. Practically speaking, while the phase diagrams that represent the stability of the fcc {delta}-phase field at room temperature are generally applicable, it is also recognized that Pu and its alloys are never truly in thermodynamic equilibrium because of self-irradiation effects, primarily from the alpha decay of Pu isotopes. This article covers past and current research on several properties of Pu and Pu-(Al or Ga) alloys and their connections to the crystal structure and the microstructure. We review the consequences of radioactive decay, the recent advances in understanding the electronic structure, the current research on phase transformations and their relations to phase diagrams and phase stability, the nature of the isothermal martensitic {delta} {yields} {alpha}{prime} transformation, and the pressure-induced transformations in the {delta}-phase alloys. New data are also presented on the structures and phase transformations observed in these materials following the application of pressure, including the formation of transition phases.

  9. Delayed neutron emission measurements for U-235 and Pu-239 

    E-Print Network [OSTI]

    Chen, Yong

    2009-05-15T23:59:59.000Z

    , and a graphite-moderated counting system were constructed to perform all these experiments. The calculated values for the five-group U-235 delayed neutron parameters and the six-group Pu-239 delayed neutron parameters were compared with the values...

  10. Pu#ng Groundwater into Agro-IBIS

    E-Print Network [OSTI]

    Pu#ng Groundwater into Agro-IBIS Evren Soylu Chris Kucharik Steve Loheide step ­ Coupling of Agro-IBIS and a 3-D groundwater model · Conclusions #12;Why the RepresentaCon of Groundwater is Important? · Groundwater runoff is a dominant

  11. Delayed neutron emission measurements for U-235 and Pu-239

    E-Print Network [OSTI]

    Chen, Yong

    2009-05-15T23:59:59.000Z

    in the counting station. A set of highly purified actinide samples (U-235 and Pu-239) was irradiated in these experiments by using the Texas A&M University Nuclear Science Center Reactor. A fast pneumatic transfer system, an integrated computer control system...

  12. Le stage international et interculturel

    E-Print Network [OSTI]

    Laval, Université

    femme · Le rôle de l'infirmier /la perception · Les normes et les routines de soins · Le soulagement de

  13. Spent Nuclear Fuel Self-Induced XRF to Predict Pu to U Content

    E-Print Network [OSTI]

    Stafford, Alissa Sarah

    2010-10-12T23:59:59.000Z

    ) in July 2008 and January 2009. These measurements successfully showed that it is possible to measure the Pu x-ray peak at 103.7 keV in PWR spent fuel (~1 percent Pu) using a planar HPGe detector. Prior to these measurement campaigns, the Pu peak has only...

  14. Characterization of Pu-238 heat source granule containment

    SciTech Connect (OSTI)

    Richardson Ii, P D [Los Alamos National Laboratory; Thronas, D L [Los Alamos National Laboratory; Romero, J P [Los Alamos National Laboratory; Sandoval, F E [Los Alamos National Laboratory; Neuman, A D [Los Alamos National Laboratory; Duncan, W S [Los Alamos National Laboratory

    2008-01-01T23:59:59.000Z

    The Milliwatt Radioisotopic Thermoelectric Generator (RTG) provides power for permissive-action links. These nuclear batteries convert thermal energy to electrical energy using a doped silicon-germanium thermopile. The thermal energy is provided by a heat source made of {sup 238}Pu, in the form of {sup 238}PuO{sub 2} granules. The granules are contained in 3 layers of encapsulation. A thin T-111 liner surrounds the {sup 238}PuO{sub 2} granules and protects the second layer (strength member) from exposure to the fuel granules. The T-111 strength member contains the fuel under impact condition. An outer clad of Hastelloy-C protects the T-111 from oxygen embrittlement. The T-111 strength member is considered the critical component in this {sup 238}PuO{sub 2} containment system. Any compromise in the strength member is something that needs to be characterized. Consequently, the T-111 strength member is characterized upon it's decommissioning through Scanning Electron Microscopy (SEM), and Metallography. SEM is used in Secondary Electron mode to reveal possible grain boundary deformation and/or cracking in the region of the strength member weld. Deformation and cracking uncovered by SEM are further characterized by Metallography. Metallography sections are mounted and polished, observed using optical microscopy, then documented in the form of photomicrographs. SEM may further be used to examine polished Metallography mounts to characterize elements using the SEM mode of Energy Dispersive X-ray Spectroscopy (EDS). This paper describes the characterization of the metallurgical condition of decommissioned RTG heat sources.

  15. Corrosion of a Pu-doped zirconolite-rich ceramic

    SciTech Connect (OSTI)

    Bakel, A.J.; Buck, E.C.; Wolf, S.F.; Chamberlain, D.B.; Bates, J.K. [Argonne National Lab., IL (United States); Ebbinghaus, B.B. [Lawrence Livermore National Lab., CA (United States)

    1997-06-01T23:59:59.000Z

    As part of a large Pu disposition program, a zirconolite-rich titanate ceramic is being developed at Lawrence Livermore National Laboratory (LLNL) as a possible immobilization material. This same material is being tested at Argonne National Laboratory (ANL). The goal of this study is to describe the corrosion behavior of this ceramic, particularly the release of Pu and Gd, using results from several static corrosion tests (MCC-1, PCT-A, and PCT-B). The release of relatively large amounts of Al, Ba, and Ca in short-term tests (3 day MCC-1 and 7 day PCT-A) indicates that these elements are released from grain boundaries or from highly soluble phases. Results from long-term (28, 98, and 182 day) PCT-B show that the releases of Al, Ba, and Ca decrease with time, the releases of U and Zr increase with time, and that the releases of Cs, Gd, Mo, and Pu remain fairly constant. Formation of alteration phases may lead to the decrease of Ba and Ca in leachate solutions. Due to the heterogeneous nature of the material, the formation of alteration phases, and the inherently low solubility of several elements, no element(s) could be recommended as good markers for the overall corrosion of this ceramic. Data show that, due to the complex nature of this material, the release of each element should be considered separately.

  16. AFS-2 FLOWSHEET MODIFICATIONS TO ADDRESS THE INGROWTH OF PU(VI) DURING METAL DISSOLUTION

    SciTech Connect (OSTI)

    Crapse, K.; Rudisill, T.; O'Rourke, P.; Kyser, E.

    2014-07-02T23:59:59.000Z

    In support of the Alternate Feed Stock Two (AFS-2) PuO{sub 2} production campaign, Savannah River National Laboratory (SRNL) conducted a series of experiments concluding that dissolving Pu metal at 95°C using a 6–10 M HNO{sub 3} solution containing 0.05–0.2 M KF and 0–2 g/L B could reduce the oxidation of Pu(IV) to Pu(VI) as compared to dissolving Pu metal under the same conditions but at or near the boiling temperature. This flowsheet was demonstrated by conducting Pu metal dissolutions at 95°C to ensure that PuO{sub 2} solids were not formed during the dissolution. These dissolution parameters can be used for dissolving both Aqueous Polishing (AP) and MOX Process (MP) specification materials. Preceding the studies reported herein, two batches of Pu metal were dissolved in the H-Canyon 6.1D dissolver to prepare feed solution for the AFS-2 PuO{sub 2} production campaign. While in storage, UV-visible spectra obtained from an at-line spectrophotometer indicated the presence of Pu(VI). Analysis of the solutions also showed the presence of Fe, Ni, and Cr. Oxidation of Pu(IV) produced during metal dissolution to Pu(VI) is a concern for anion exchange purification. Anion exchange requires Pu in the +4 oxidation state for formation of the anionic plutonium(IV) hexanitrato complex which absorbs onto the resin. The presence of Pu(VI) in the anion feed solution would require a valence adjustment step to prevent losses. In addition, the presence of Cr(VI) would result in absorption of chromate ion onto the resin and could limit the purification of Pu from Cr which may challenge the purity specification of the final PuO{sub 2} product. Initial experiments were performed to quantify the rate of oxidation of Pu(IV) to Pu(VI) (presumed to be facilitated by Cr(VI)) as functions of the HNO{sub 3} concentration and temperature in simulated dissolution solutions containing Cr, Fe, and Ni. In these simulated Pu dissolutions studies, lowering the temperature from near boiling to 95 °C reduced the oxidation rate of Pu(IV) to Pu(VI). For 8.1 M HNO{sub 3} simulated dissolution solutions, at near boiling conditions >35% Pu(VI) was present in 50 h while at 95 °C <10% Pu(VI) was present at 50 h. At near boiling temperatures, eliminating the presence of Cr and varying the HNO{sub 3} concentration in the range of 7–8.5 M had little effect on the rate of conversion of Pu(IV) to Pu(VI). HNO{sub 3} oxidation of Pu(IV) to Pu(VI) in a pure solution has been reported previously. Based on simulated dissolution experiments, this study concluded that dissolving Pu metal at 95°C using a 6 to 10 M HNO{sub 3} solution 0.05–0.2 M KF and 0–2 g/L B could reduce the rate of oxidation of Pu(IV) to Pu(VI) as compared to near boiling conditions. To demonstrate this flowsheet, two small-scale experiments were performed dissolving Pu metal up to 6.75 g/L. No Pu-containing residues were observed in the solutions after cooling. Using Pu metal dissolution rates measured during the experiments and a correlation developed by Holcomb, the time required to completely dissolve a batch of Pu metal in an H-Canyon dissolver using this flowsheet was estimated to require nearly 5 days (120 h). This value is reasonably consistent with an estimate based on the Batch 2 and 3 dissolution times in the 6.1D dissolver and Pu metal dissolution rates measured in this study and by Rudisill et al. Data from the present and previous studies show that the Pu metal dissolution rate decreases by a factor of approximately two when the temperature decreased from boiling (112 to 116°C) to 95°C. Therefore, the time required to dissolve a batch of Pu metal in an H-Canyon dissolver at 95°C would likely double (from 36 to 54 h) and require 72 to 108 h depending on the surface area of the Pu metal. Based on the experimental studies, a Pu metal dissolution flowsheet utilizing 6–10 M HNO{sub 3} containing 0.05–0.2 M KF (with 0–2 g/L B) at 95°C is recommended to reduce the oxidation of Pu(IV) to Pu(VI) as compared to near boiling conditions. The time required to completely di

  17. Removal of Pu238 from Neptunium Solution by Anion Exchange

    SciTech Connect (OSTI)

    KYSER, EDWARD

    2003-12-01T23:59:59.000Z

    A new anion flowsheet for use in HB-Line was tested in the lab with Reillex{trademark} HPQ for removal of Pu{sup 238} contamination from Np. Significant rejection of Pu{sup 238} was observed by washing with 6 to 12 bed volumes (BV) of reductive wash containing reduced nitric acid concentration along with both ferrous sulfamate (FS) and hydrazine. A shortened-height column was utilized in these tests to match changes in the plant equipment. Lab experiments scaled to plant batch sizes of 1500 to 2200 g Np were observed with modest losses for up-flow washing. Down-flow washing was observed to have high losses. The following are recommended conditions for removing Pu{sup 238} from Np solutions by anion exchange in HB-Line: (1) Feed conditions: Up-flow 6.4-8 M HNO{sub 3}, 0.02 M hydrazine, 0.05 M excess FS, less than 5 days storage of solution after FS addition. (2) Reductive Wash conditions: Up-flow 6-12 BV of 6.4 M HNO{sub 3}, 0.05 M FS, 0.05 M hydrazine. 1.8 mL/min/cm{sup 2} flowrate. (3) Decontamination Wash conditions: Up-flow 1-2 BV of 6.4-8 M HNO{sub 3}, no FS, no hydrazine. (4) Elution conditions: Down-flow 0.17 M HNO{sub 3}, 0.05 M hydrazine, no FS.

  18. Neutron Resonance Parameters and Covariance Matrix of 239Pu

    SciTech Connect (OSTI)

    Derrien, Herve [ORNL; Leal, Luiz C [ORNL; Larson, Nancy M [ORNL

    2008-08-01T23:59:59.000Z

    In order to obtain the resonance parameters in a single energy range and the corresponding covariance matrix, a reevaluation of 239Pu was performed with the code SAMMY. The most recent experimental data were analyzed or reanalyzed in the energy range thermal to 2.5 keV. The normalization of the fission cross section data was reconsidered by taking into account the most recent measurements of Weston et al. and Wagemans et al. A full resonance parameter covariance matrix was generated. The method used to obtain realistic uncertainties on the average cross section calculated by SAMMY or other processing codes was examined.

  19. First-principles elastic properties of (alpha)-Pu

    SciTech Connect (OSTI)

    Soderlind, P; Klepeis, J

    2009-02-18T23:59:59.000Z

    Density-functional electronic-structure calculations have been used to investigate the ambient pressure and low temperature elastic properties of the ground-state {alpha} phase of plutonium metal. The electronic structure and correlation effects are modeled within a fully relativistic antiferromagnetic treatment with a generalized gradient approximation for the electron exchange and correlation functional. The 13 independent elastic constants, for the monoclinic {alpha}-Pu system, are calculated for the observed geometry. A comparison of the results with measured data from recent resonant ultrasound spectroscopy for a cast sample is made.

  20. First-principles elastic properties of (alpha)-Pu

    SciTech Connect (OSTI)

    Soderlind, P; Klepeis, J E

    2008-11-04T23:59:59.000Z

    Density-functional electronic structure calculations have been used to investigate the ambient pressure and low temperature elastic properties of the ground-state {alpha} phase of plutonium metal. The electronic structure and correlation effects are modeled within a fully relativistic anti-ferromagnetic treatment with a generalized gradient approximation for the electron exchange and correlation functionals. The 13 independent elastic constants, for the monoclinic {alpha}-Pu system, are calculated for the observed geometry. A comparison of the results with measured data from resonant ultrasound spectroscopy for a cast sample is made.

  1. Design Studies of ``100% Pu'' Mox Lead Test Assembly

    SciTech Connect (OSTI)

    Pavlovichev, A.M.

    2001-01-11T23:59:59.000Z

    In this document the results of neutronics studies of <<100%Pu>> MOX LTA design are presented. The parametric studies of infinite MOX-UOX grids, MOX-UOX core fragments and of VVER-1000 core with 3 MOX LTAs are performed. The neutronics parameters of MOX fueled core have been performed for the chosen design MOX LTA using the Russian 3D code BIPR-7A and 2D code PERMAK-A with the constants prepared by the cell spectrum code TVS-M.

  2. Optimization Online - PuLP: A Linear Programming Toolkit for Python

    E-Print Network [OSTI]

    Stuart Mitchell

    2011-09-22T23:59:59.000Z

    Sep 22, 2011 ... PuLP is a high-level modelling library that leverages the power of the ... Keywords: mathematical programming; Python; modelling language.

  3. Development of U and Pu Co-Recovery Process (Co-Processing) for Future Reprocessing

    SciTech Connect (OSTI)

    Yamamoto, K.; Yanagibashi, F.; Fujimoto, I.; Sato, T.; Ohbu, T.; Taki, K.; Hayashi, S. [Japan Atomic Energy Agency, Tokai-mura, Naka-gun, Ibaraki 319-1194 (Japan)

    2013-07-01T23:59:59.000Z

    Co-processing process, which is the modified Purex process focused on co-recovery of Pu and U, has been studied at Operation Testing Laboratory, Tokai Reprocessing Plant in JAEA. The set up of the process was performed with flow-sheets study by process calculation to avoid Pu isolation in the whole process and to co-recover Pu/U product solution with a suitable Pu/U ratio (0.5< Pu/U <2). The initial Pu/U ratios of the feed solutions were taken as 1%, 3% and 20% considering the composition of the future spent fuels. The verification of the flow-sheets for each feed solutions were carried out with mixer-setters and active Pu/U feed solutions, focusing on the partitioning unit, and favorable back extraction performances of Pu accompanied by U were observed at all cases of the given feed solutions. According to these results, the co-processing process showed a good prospect to treat all kinds of future fuels from LWR, LWR-MOX and FBR, and a good prospect to be simplified by omitting the Pu/U purification cycle.

  4. Thermal Analysis of ZPPR High Pu Content Stored Fuel

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

    Solbrig, Charles W.; Pope, Chad L.; Andrus, Jason P.

    2014-01-01T23:59:59.000Z

    The Zero Power Physics Reactor (ZPPR) operated from April 18, 1969, until 1990. ZPPR operated at low power for testing nuclear reactor designs. This paper examines the temperature of Pu content ZPPR fuel while it is in storage. Heat is generated in the fuel due to Pu and Am decay and is a concern for possible cladding damage. Damage to the cladding could lead to fuel hydriding and oxidizing. A series of computer simulations were made to determine the range of temperatures potentially occuring in the ZPPR fuel. The maximum calculated fuel temperature is 292°C (558°F). Conservative assumptions in themore »model intentionally overestimate temperatures. The stored fuel temperatures are dependent on the distribution of fuel in the surrounding storage compartments, the heat generation rate of the fuel, and the orientation of fuel. Direct fuel temperatures could not be measured but storage bin doors, storage sleeve doors, and storage canister temperatures were measured. Comparison of these three temperatures to the calculations indicates that the temperatures calculated with conservative assumptions are, as expected, higher than the actual temperatures. The maximum calculated fuel temperature with the most conservative assumptions is significantly below the fuel failure criterion of 600°C (1,112°F).« less

  5. ZPR-6 assembly 7 high {sup 240}Pu core experiments : a fast reactor core with mixed (Pu,U)-oxide fuel and a centeral high{sup 240}Pu zone.

    SciTech Connect (OSTI)

    Lell, R. M.; Morman, J. A.; Schaefer, R.W.; McKnight, R.D.; Nuclear Engineering Division

    2009-02-23T23:59:59.000Z

    ZPR-6 Assembly 7 (ZPR-6/7) encompasses a series of experiments performed at the ZPR-6 facility at Argonne National Laboratory in 1970 and 1971 as part of the Demonstration Reactor Benchmark Program (Reference 1). Assembly 7 simulated a large sodium-cooled LMFBR with mixed oxide fuel, depleted uranium radial and axial blankets, and a core H/D near unity. ZPR-6/7 was designed to test fast reactor physics data and methods, so configurations in the Assembly 7 program were as simple as possible in terms of geometry and composition. ZPR-6/7 had a very uniform core assembled from small plates of depleted uranium, sodium, iron oxide, U{sub 3}O{sub 8} and Pu-U-Mo alloy loaded into stainless steel drawers. The steel drawers were placed in square stainless steel tubes in the two halves of a split table machine. ZPR-6/7 had a simple, symmetric core unit cell whose neutronic characteristics were dominated by plutonium and {sup 238}U. The core was surrounded by thick radial and axial regions of depleted uranium to simulate radial and axial blankets and to isolate the core from the surrounding room. The ZPR-6/7 program encompassed 139 separate core loadings which include the initial approach to critical and all subsequent core loading changes required to perform specific experiments and measurements. In this context a loading refers to a particular configuration of fueled drawers, radial blanket drawers and experimental equipment (if present) in the matrix of steel tubes. Two principal core configurations were established. The uniform core (Loadings 1-84) had a relatively uniform core composition. The high {sup 240}Pu core (Loadings 85-139) was a variant on the uniform core. The plutonium in the Pu-U-Mo fuel plates in the uniform core contains 11% {sup 240}Pu. In the high {sup 240}Pu core, all Pu-U-Mo plates in the inner core region (central 61 matrix locations per half of the split table machine) were replaced by Pu-U-Mo plates containing 27% {sup 240}Pu in the plutonium component to construct a central core zone with a composition closer to that in an LMFBR core with high burnup. The high {sup 240}Pu configuration was constructed for two reasons. First, the composition of the high {sup 240}Pu zone more closely matched the composition of LMFBR cores anticipated in design work in 1970. Second, comparison of measurements in the ZPR-6/7 uniform core with corresponding measurements in the high {sup 240}Pu zone provided an assessment of some of the effects of long-term {sup 240}Pu buildup in LMFBR cores. The uniform core version of ZPR-6/7 is evaluated in ZPR-LMFR-EXP-001. This document only addresses measurements in the high {sup 240}Pu core version of ZPR-6/7. Many types of measurements were performed as part of the ZPR-6/7 program. Measurements of criticality, sodium void worth, control rod worth and reaction rate distributions in the high {sup 240}Pu core configuration are evaluated here. For each category of measurements, the uncertainties are evaluated, and benchmark model data are provided.

  6. LE BULLETIN DE L'EPI N 38 LE CRABE LOGO LE CRABE LOGO

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    87 LE BULLETIN DE L'EPI N° 38 LE CRABE LOGO LE CRABE LOGO Maurice MAZALTO, Maxime WACK Didier, Ali fabrication du crabe Logo, avec une équipe d'enseignants des deux établissements ; enseignants de disciplines ? En 1981 apparaît en France la première publication sur le véhicule programmable : dénommé tortue logo

  7. Spent Nuclear Fuel Self-Induced XRF to Predict Pu to U Content 

    E-Print Network [OSTI]

    Stafford, Alissa Sarah

    2010-10-12T23:59:59.000Z

    The quantification of plutonium (Pu) in spent nuclear fuel is an increasingly important safeguards issue. There exists an estimated worldwide 980 metric tons of Pu in the nuclear fuel cycle and the majority is in spent nuclear fuel waiting for long...

  8. Preparation and characterization of {sup 238}Pu-ceramics for radiation damage experiments

    SciTech Connect (OSTI)

    DM Strachan; RD Scheele; WC Buchmiller; JD Vienna; RL Sell; RJ Elovich

    2000-06-15T23:59:59.000Z

    As a result of treaty agreements between Russia and the US, portions of their respective plutonium and nuclear weapons stockpiles have been declared excess. In support of the US Department of Energy's 1998 decision to pursue immobilization of a portion of the remaining Pu in a titanate-based ceramic, the authors prepared nearly 200 radiation-damage test specimens of five Pu- and {sup 238}Pu-ceramics containing 10 mass% Pu to determine the effects of irradiation from the contained Pu and U on the ceramic. The five Pu-ceramics were (1) phase-pure pyrochlore [ideally, Ca(U, Pu)Ti{sub 2}O{sub 7}], (2) pyrochlore-rich baseline, (3) pyrochlore-rich baseline with impurities, (4) phase-pure zirconolite [ideally Ca(U, Pu)Ti{sub 2}O{sub 7}], and (5) a zirconolite-rich baseline. These ceramics were prepared with either normal weapons-grade Pu, which is predominantly {sup 239}Pu, or {sup 238}Pu. The {sup 238}Pu accelerates the radiation damage relative to the {sup 239}Pu because of its much higher specific activity. The authors were unsuccessful in preparing phase-pure (Pu, U) brannerite, which is the third crystalline phase present in the baseline immobilization form. Since these materials will contain {approximately}10 mass% Pu and about 20 mass% U, radiation damage to the crystalline structure of these materials will occur overtime. As the material becomes damaged from the decay of the Pu and U, it is possible for the material to swell as both the alpha particles and recoiling atoms rupture chemical bonds within the solid. As the material changes density, cracking, perhaps in the form of microcracks, may occur. If cracking occurs in ceramic that has been placed in a repository, the calculated rate of radionuclide release if the can has corroded would increase proportionately to the increase in surface area. To investigate the effects of radiation damage on the five ceramics prepared, the authors are storing the specimens at 20, 125, and 250 C until the {sup 238}Pu specimens become metamict and the damage saturates. They will characterize and test these specimens every 6 months by (1) monitoring the dimensions, (2) monitoring the geometric and pycnometric densities, (3) monitoring the appearance, (4) determining the normalized amount leached during a 3-day, static, 90 C leach test in high purity water, and (5) monitoring the crystal structure with x-ray diffraction crystallography (XRD). In this paper, the authors document the preparation and initial characterization of the materials that were made in this study. The initial XRD characterizations indicate that the phase assemblages appear to be correct with the exception of the {sup 238}Pu-zirconolite baseline material. They made this latter material using too much Pu, so this material contains unreacted PuO{sub 2}. The characterization of the physical properties of these materials found that the densities for all but three materials appear to be > 94% of theoretical, and only a few of the specimens have significant cracking. Those with cracking were the {sup 239}Pu-zirconolite specimens, which were sintered with a heat-up rate of 5 C/min. They sintered the {sup 238}Pu-zirconolite specimens with a heat-up rate of 2.5 C/min and obtained specimens with only minor surface cracking. Elemental releases during the 3-day MCC leach tests show that the normalized elemental releases depend on (1) whether the Pu is {sup 239}Pu or {sup 238}Pu, (2) the material type, and (3) the identity of the constituent. The effect of the Pu isotope in the ceramic is most dramatic for Pu release, with nominally 50 to 100 times more Pu activity released from the {sup 238}Pu specimens. This is unlikely to be an early indicator of radiation damage, because of the short time between specimen preparation and testing. In contrast greater amounts of Mo are released from the {sup 239}Pu specimens. Of the contained constituents, Ca Al, Pu, and U are the species found at relatively higher levels in the leachates.

  9. U.S.-Russian experts NATO collaborative research grant exchange visit meeting on excess Pu ceramics formulations and characterizations

    SciTech Connect (OSTI)

    Jardine, L.J., LLNL

    1998-11-24T23:59:59.000Z

    This document contains the agenda and meeting notes. Topics of discussion included US Pu disposition ceramics activities, Russian experience and proposals in Pu ceramics, and development of possible Russian ceramic proposals or collaborations.

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

    SciTech Connect (OSTI)

    G. Palmiotti; H. Hiruta; M. Salvatores

    2012-09-01T23:59:59.000Z

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

  11. Hydrothermal synthesis, structure, and magnetic properties of Pu(SeO{sub 3}){sub 2}

    SciTech Connect (OSTI)

    Bray, Travis H. [Department of Chemistry and Biochemistry and Center for Actinide Science, Auburn University, Auburn, AL 36849 (United States); Skanthakumar, S.; Soderholm, L. [Chemistry Division, Argonne National Laboratory, Argonne, IL 60439 (United States); Sykora, Richard E. [Department of Chemistry, University of South Alabama, Mobile, AL 36688 (United States); Haire, Richard G. [Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831 (United States); Albrecht-Schmitt, Thomas E. [Department of Chemistry and Biochemistry and Center for Actinide Science, Auburn University, Auburn, AL 36849 (United States)], E-mail: albreth@auburn.edu

    2008-03-15T23:59:59.000Z

    The reaction between PuO{sub 2} and SeO{sub 2} under mild hydrothermal conditions results in the formation of Pu(SeO{sub 3}){sub 2} as brick-red prisms. This compound adopts the Ce(SeO{sub 3}){sub 2} structure type, and consists of one-dimensional chains of edge-sharing [PuO{sub 8}] distorted bicapped trigonal prisms linked by [SeO{sub 3}] units into a three-dimensional network. Crystallographic data: Pu(SeO{sub 3}){sub 2}, monoclinic, space group P2{sub 1}/n, a=6.960(1) A, b=10.547(2) A, c=7.245(1) A, {beta}=106.880(9){sup o}, V=508.98(17) A{sup 3}, Z=4 (T=193 K), R(F)=2.92% for 83 parameters with 1140 reflections with I>2{sigma}(I). Magnetic susceptibility data for Pu(SeO{sub 3}){sub 2} are linear from 35 to 320 K and yield an effective moment of 2.71(5) {mu}{sub B} and a Weiss constant of -500(5) K. - Graphical abstract: A depiction of the three-dimensional structure of Pu(SeO{sub 3}){sub 2} formed from the interconnection of one-dimensional chains of edge-sharing PuO{sub 8} dodecahedra by selenite anions.

  12. agir au Sud avec le Sud et

    E-Print Network [OSTI]

    'appui, jusqu'ici certifiés individuellement selon le référentiel ISO 9001, ont amorcé, dans le cadre de la

  13. ZPR-6 assembly 7 high {sup 240} PU core : a cylindrical assemby with mixed (PU, U)-oxide fuel and a central high {sup 240} PU zone.

    SciTech Connect (OSTI)

    Lell, R. M.; Schaefer, R. W.; McKnight, R. D.; Tsiboulia, A.; Rozhikhin, Y.; Nuclear Engineering Division; Inst. of Physics and Power Engineering

    2007-10-01T23:59:59.000Z

    Over a period of 30 years more than a hundred Zero Power Reactor (ZPR) critical assemblies were constructed at Argonne National Laboratory. The ZPR facilities, ZPR-3, ZPR-6, ZPR-9 and ZPPR, were all fast critical assembly facilities. The ZPR critical assemblies were constructed to support fast reactor development, but data from some of these assemblies are also well suited to form the basis for criticality safety benchmarks. Of the three classes of ZPR assemblies, engineering mockups, engineering benchmarks and physics benchmarks, the last group tends to be most useful for criticality safety. Because physics benchmarks were designed to test fast reactor physics data and methods, they were as simple as possible in geometry and composition. The principal fissile species was {sup 235}U or {sup 239}Pu. Fuel enrichments ranged from 9% to 95%. Often there were only one or two main core diluent materials, such as aluminum, graphite, iron, sodium or stainless steel. The cores were reflected (and insulated from room return effects) by one or two layers of materials such as depleted uranium, lead or stainless steel. Despite their more complex nature, a small number of assemblies from the other two classes would make useful criticality safety benchmarks because they have features related to criticality safety issues, such as reflection by soil-like material. The term 'benchmark' in a ZPR program connotes a particularly simple loading aimed at gaining basic reactor physics insight, as opposed to studying a reactor design. In fact, the ZPR-6/7 Benchmark Assembly (Reference 1) had a very simple core unit cell assembled from plates of depleted uranium, sodium, iron oxide, U3O8, and plutonium. The ZPR-6/7 core cell-average composition is typical of the interior region of liquid-metal fast breeder reactors (LMFBRs) of the era. It was one part of the Demonstration Reactor Benchmark Program,a which provided integral experiments characterizing the important features of demonstration-size LMFBRs. As a benchmark, ZPR-6/7 was devoid of many 'real' reactor features, such as simulated control rods and multiple enrichment zones, in its reference form. Those kinds of features were investigated experimentally in variants of the reference ZPR-6/7 or in other critical assemblies in the Demonstration Reactor Benchmark Program.

  14. Le laser : une brve introduction

    E-Print Network [OSTI]

    van Tiggelen, Bart

    Le laser : une brève introduction Christian Chardonnet Directeur du Laboratoire Charles Fabry (CNRS Lasers (CNRS/Université Paris 13) Le 9 avril 2010 #12;Les sources de lumière l'ampoule électrique Les;Zoom : x1000 x1000 x1000 x1000 x100 Le spectre du soleil I.R. U.V. Comparaison du rayonnement laser et

  15. RAPID DETERMINATION OF 237 NP AND PU ISOTOPES IN WATER BY INDUCTIVELY COUPLED PLASMA MASS SPECTROMETRY AND ALPHA SPECTROMETRY

    SciTech Connect (OSTI)

    Maxwell, S.; Jones, V.; Culligan, B.; Nichols, S.; Noyes, G.

    2010-06-23T23:59:59.000Z

    A new method that allows rapid preconcentration and separation of plutonium and neptunium in water samples was developed for the measurement of {sup 237}Np and Pu isotopes by inductively-coupled plasma mass spectrometry (ICP-MS) and alpha spectrometry; a hybrid approach. {sup 238}U can interfere with {sup 239}Pu measurement by ICP-MS as {sup 238}UH{sup +} mass overlap and {sup 237}Np via peak tailing. The method provide enhanced removal of uranium by separating Pu and Np initially on TEVA Resin, then moving Pu to DGA resin for additional removal of uranium. The decontamination factor for uranium from Pu is almost 100,000 and the decontamination factor for U from Np is greater than 10,000. This method uses stacked extraction chromatography cartridges and vacuum box technology to facilitate rapid separations. Preconcentration is performed using a streamlined calcium phosphate precipitation method. Purified solutions are split between ICP-MS and alpha spectrometry so that long and short-lived Pu isotopes can be measured successfully. The method allows for simultaneous extraction of 20 samples (including QC samples) in 4 to 6 hours, and can also be used for emergency response. {sup 239}Pu, {sup 242}Pu and {sup 237}Np were measured by ICP-MS, while {sup 236}Pu, {sup 238}Pu, and {sup 239}Pu were measured by alpha spectrometry.

  16. Osteosarcomas among beagles exposed to /sup 239/Pu

    SciTech Connect (OSTI)

    Whittemore, A.S.; McMillan, A.

    1982-04-01T23:59:59.000Z

    A Weibull distribution was fit to the osteosarcoma death times of beagles given single intravenous injections of /sup 239/Pu. For injected doses in the range 0-1..mu..Ci/kg the osteosarcoma incidence rate h(t) at t days after injection can be fit by a quadratic function of injected dose d: h(t) = 2.61 X 10/sup -18/ d/sup 2/t/sup 4.91/. The best-fitting linear function was rejected by the data (P < 0.001). A different formula for h(t), derived from a multistage theory for osteosarcoma induction, was also fit to these data. For this purpose microdosimetry calculations were used to estimate the dose to the cells at risk in the endosteal layer (endosteal dose). According to the best fit, h(t) is a quadratic function of endosteal dose at low doses. A linear dose-response relationship was again rejected. The absence of a linear component at low doses might be explained by the fact that 108 of the 185 animals injected at the lowest doses (<0.02 ..mu..Ci/kg) were still alive at the time these data were collected.

  17. Clearwater: Extensible, Flexible, Modular Code Generation Galen S. Swint, Calton Pu,

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Clearwater: Extensible, Flexible, Modular Code Generation Galen S. Swint, Calton Pu, Gueyoung Jung address the challenge of implementing code generators for two such DSLs that are flexible (resilient [4]. However, significant research challenges remain for generating flexible, reusable, and modular

  18. DETERMINATION OF 237NP AND PU ISOTOPES IN LARGE SOIL SAMPLES BY INDUCTIVELY COUPLED PLASMA MASS SPECTROMETRY

    SciTech Connect (OSTI)

    Maxwell, S.

    2010-07-26T23:59:59.000Z

    A new method for the determination of {sup 237}Np and Pu isotopes in large soil samples has been developed that provides enhanced uranium removal to facilitate assay by inductively coupled plasma mass spectrometry (ICP-MS). This method allows rapid preconcentration and separation of plutonium and neptunium in large soil samples for the measurement of {sup 237}Np and Pu isotopes by ICP-MS. {sup 238}U can interfere with {sup 239}Pu measurement by ICP-MS as {sup 238}UH{sup +} mass overlap and {sup 237}Np via {sup 238}U peak tailing. The method provides enhanced removal of uranium by separating Pu and Np initially on TEVA Resin, then transferring Pu to DGA resin for additional purification. The decontamination factor for removal of uranium from plutonium for this method is greater than 1 x 10{sup 6}. Alpha spectrometry can also be applied so that the shorter-lived {sup 238}Pu isotope can be measured successfully. {sup 239}Pu, {sup 242}Pu and {sup 237}Np were measured by ICP-MS, while {sup 236}Pu and {sup 238}Pu were measured by alpha spectrometry.

  19. Thermal Analysis of ZPPR High Pu Content Stored Fuel

    SciTech Connect (OSTI)

    Charles W. Solbrig; Chad Pope; Jason Andrus

    2014-09-01T23:59:59.000Z

    This paper estimates the temperature of high Pu content ZPPR fuel while in storage to determine the probablilty of fuel damage during storage. The Zero Power Physics Reactor (ZPPR) is an experimental reactor which has been decomissioned. It ran only at extremely low power, for testing nuclear reactor designs and was operated as a criticality facility from April 18, 1969 until decommissioned in 1990. Its fuel was manufactured in 1967 and has been in storage since the reactor was decomissioned. Heat is generated in the fuel due to Pu and Am decay and is a concern for possible fuel damage. Any damage to the cladding would be expected to lead to the fuel hydriding and oxidizing over a long period of storage as was described in the analysis of the damage to the ZPPR uranium fuel resulting in the fuel becoming unuseable and a large potential source of contamination. (Ref. Solbrig, 1994). A series of computer runs were made to scope out the range of temperatures that can occur in the ZPPR fuel in storage. The maximum calculated conservative fuel temperature is high (292 degrees C [558 degrees F]) in spite of the fact that the fuel element heat generation rates seem quite low, between 35 and 10 W for containers (called clamshells) full of fuel. However, the ZPPR storage bins, built for safeguards, are very effective insulators. The calculated clamshells and the cavity doors temperatures are also high. No record exists of people receiving skin burns by touching the cavity doors or clamshells, which indicates the computed temperatures may be higher than actual. (Note, gloves are worn when handling hotter clamshells.) Given the high calculated temperatures, a cursory measurement program was conducted to calibrate the calculated results. The measurement of bin doors, cavity doors, and clamshell temperatures would be easy to make if it were not for regulations resulting from security and potential contamination. Due to conservative assumptions in the model like high heat transfer contact resistance between contact surfaces (such as between the fuel and the clamshell), the calculated temperatures are intended to be overestimated. The temperatures of the stored fuel in a particular clamshell are dependent, among other parameters, on the distribution of fuel in the surrounding storage compartments, the heat generation rate of the fuel, and the orientation of fuel in the clamshell (parallel or perpendicular to the door). The distribution of fuel in this analysis was selected to give higher temperatures than actual distributions might give. Due to possible contamination and security concerns, fuel temperatures could not be measured but the bin doors, storage sleeve doors, and clamshell temperatures could be and were measured. The comparison of these three temperatures to the calculations indicates that the temperatures calculated with conservative assumptions are higher than the actual temperatures. This implies that the calculated fuel temperatures are higher than actual also. The maximum calculated fuel temperature with the most conservative assumptions (292 degrees C, (558 degrees F)) is significantly below the no fuel failure criterion of 600 degrees C (1,112 degrees F). Some fuel failures have occurred but these results indicate that the failures are not due to high temperatures encountered in fuel storage.

  20. Heterogeneous Reduction of PuO2 with Fe(II): Importance of the Fe(III) Reaction Product

    SciTech Connect (OSTI)

    Felmy, Andrew R.; Moore, Dean A.; Rosso, Kevin M.; Qafoku, Odeta; Rai, Dhanpat; Buck, Edgar C.; Ilton, Eugene S.

    2011-05-01T23:59:59.000Z

    Abstract Heterogeneous reduction of actinides in higher and more soluble oxidation states to lower more insoluble oxidation states by reductants such as Fe(II) has been the subject of intensive study for more than two decades. However, Fe(II)-induced reduction of sparingly soluble Pu(IV) to the more soluble lower oxidation state Pu(III) has been much less studied even though such reactions can potentially increase the mobility of Pu in the subsurface. Thermodynamic calculations are presented that show how differences in the free energy of various possible solid-phase Fe(III) reaction products can greatly influence aqueous Pu(III) concentrations resulting from reduction of PuO2(am) by Fe(II). We present the first experimental evidence that reduction of PuO2(am) to Pu(III) by Fe(II) was enhanced when the Fe(III) mineral goethite was spiked into the reaction. The effect of goethite on reduction of Pu(IV) was demonstrated by measuring the time-dependence of total aqueous Pu concentration, its oxidation state, and system pe/pH. We also re-evaluated established protocols for determining Pu(III) [(Pu(III) + Pu(IV)) - Pu(IV)] by using thenoyltrifluoroacetone (TTA) in toluene extractions; the study showed that it is important to eliminate dissolved oxygen from the TTA solutions for accurate determinations. More broadly, this study highlights the importance of the Fe(III) reaction product in actinide reduction rate and extent by Fe(II).

  1. Am phases in the matrix of a U-Pu-Zr alloy with Np, Am, and rare-earth elements

    SciTech Connect (OSTI)

    Dawn E Janney; J. Rory Kennedy; James W. Madden; Thomas P. O'Holleran

    2015-01-01T23:59:59.000Z

    Phases and microstructures in the matrix of an as-cast U-Pu-Zr alloy with 3 wt% Am, 2% Np, and 8% rare-earth elements were characterized by scanning and transmission electron microscopy. The matrix consists primarily of two phases, both of which contain Am: ?-(U, Np, Pu, Am) (~70 at% U, 5% Np, 14% Pu, 1% Am, and 10% Zr) and ?-(U, Np, Pu, Am)Zr2 (~25% U, 2% Np, 10-15% Pu, 1-2% Am, and 55-60 at% Zr). These phases are similar to those in U-Pu-Zr alloys, although the Zr content in ?-(U, Np, Pu, Am) is higher than that in ?-(U, Pu) and the Zr content in ?-(U, Np, Pu, Am)Zr2 is lower than that in ?-UZr2. Nanocrystalline actinide oxides with structures similar to UO2 occurred in some areas, but may have formed by reactions with the atmosphere during sample handling. Planar features consisting of a central zone of ?-(U, Np, Pu, Am) bracketed by zones of ?-(U, Np, Pu, Am)Zr2 bound irregular polygons ranging in size from a few micrometers to a few tens of micrometers across. The rest of the matrix consists of elongated domains of ?-(U, Np, Pu, Am) and ?-(U, Np, Pu, Am)Zr2. Each of these domains is a few tens of nanometers across and a few hundred nanometers long. The domains display strong preferred orientations involving areas a few hundred nanometers to a few micrometers across.

  2. Hematological responses after inhaling {sup 238}PuO{sub 2}: An extrapolation from beagle dogs to humans

    SciTech Connect (OSTI)

    Scott, B.R.; Muggenburg, B.A.; Welsh, C.A.; Angerstein, D.A.

    1994-11-01T23:59:59.000Z

    The alpha emitter plutonium-238 ({sup 238}Pu), which is produced in uranium-fueled, light-water reactors, is used as a thermoelectric power source for space applications. Inhalation of a mixed oxide form of Pu is the most likely mode of exposure of workers and the general public. Occupational exposures to {sup 238}PuO{sub 2} have occurred in association with the fabrication of radioisotope thermoelectric generators. Organs and tissue at risk for deterministic and stochastic effects of {sup 238}Pu-alpha irradiation include the lung, liver, skeleton, and lymphatic tissue. Little has been reported about the effects of inhaled {sup 238}PuO{sub 2} on peripheral blood cell counts in humans. The purpose of this study was to investigate hematological responses after a single inhalation exposure of Beagle dogs to alpha-emitting {sup 238}PuO{sub 2} particles and to extrapolate results to humans.

  3. EIS-0299: Proposed Production of Plutonium-238 (Pu-238) for Use in Advanced Radioisotope Power Systems (RPS) for Space Missions

    Broader source: Energy.gov [DOE]

    This EIS is for the proposed production of plutonium-238 (Pu-238) using one or more DOE research reactors and facilities.

  4. PuReMD-GPU: A reactive molecular dynamics simulation package for GPUs

    SciTech Connect (OSTI)

    Kylasa, S.B., E-mail: skylasa@purdue.edu [Department of Elec. and Comp. Eng., Purdue University, West Lafayette, IN 47907 (United States); Aktulga, H.M., E-mail: hmaktulga@lbl.gov [Lawrence Berkeley National Laboratory, 1 Cyclotron Rd, MS 50F-1650, Berkeley, CA 94720 (United States); Grama, A.Y., E-mail: ayg@cs.purdue.edu [Department of Computer Science, Purdue University, West Lafayette, IN 47907 (United States)

    2014-09-01T23:59:59.000Z

    We present an efficient and highly accurate GP-GPU implementation of our community code, PuReMD, for reactive molecular dynamics simulations using the ReaxFF force field. PuReMD and its incorporation into LAMMPS (Reax/C) is used by a large number of research groups worldwide for simulating diverse systems ranging from biomembranes to explosives (RDX) at atomistic level of detail. The sub-femtosecond time-steps associated with ReaxFF strongly motivate significant improvements to per-timestep simulation time through effective use of GPUs. This paper presents, in detail, the design and implementation of PuReMD-GPU, which enables ReaxFF simulations on GPUs, as well as various performance optimization techniques we developed to obtain high performance on state-of-the-art hardware. Comprehensive experiments on model systems (bulk water and amorphous silica) are presented to quantify the performance improvements achieved by PuReMD-GPU and to verify its accuracy. In particular, our experiments show up to 16× improvement in runtime compared to our highly optimized CPU-only single-core ReaxFF implementation. PuReMD-GPU is a unique production code, and is currently available on request from the authors.

  5. PROPERTIES AND BEHAVIOR OF 238PU RELEVANT TO DECONTAMINATION OF BUILDING 235-F

    SciTech Connect (OSTI)

    Duncan, A.; Kane, M.

    2009-11-24T23:59:59.000Z

    This report was prepared to document the physical, chemical and radiological properties of plutonium oxide materials that were processed in the Plutonium Fuel Form Facility (PuFF) in building 235-F at the Savannah River Plant (now known as the Savannah River Site) in the late 1970s and early 1980s. An understanding of these properties is needed to support current project planning for the safe and effective decontamination and deactivation (D&D) of PuFF. The PuFF mission was production of heat sources to power Radioisotope Thermoelectric Generators (RTGs) used in space craft. The specification for the PuO{sub 2} used to fabricate the heat sources required that the isotopic content of the plutonium be 83 {+-} 1% Pu-238 due to its high decay heat of 0.57 W/g. The high specific activity of Pu-238 (17.1 Ci/g) due to alpha decay makes this material very difficult to manage. The production process produced micron-sized particles which proved difficult to contain during operations, creating personnel contamination concerns and resulting in the expenditure of significant resources to decontaminate spaces after loss of material containment. This report examines high {sup 238}Pu-content material properties relevant to the D&D of PuFF. These relevant properties are those that contribute to the mobility of the material. Physical properties which produce or maintain small particle size work to increase particle mobility. Early workers with {sup 238}PuO{sub 2} felt that, unlike most small particles, Pu-238 oxide particles would not naturally agglomerate to form larger, less mobile particles. It was thought that the heat generated by the particles would prevent water molecules from binding to the particle surface. Particles covered with bound water tend to agglomerate more easily. However, it is now understood that the self-heating effect is not sufficient to prevent adsorption of water on particle surfaces and thus would not prevent agglomeration of particles. Operational experience at PuFF indicates that the Pu-238 contamination was observed to move along surfaces and through High Efficiency Particulate Air (HEPA) filters over time. Recent research into the phenomenon known as alpha recoil offers a potential explanation for this observed behavior. Momentum is conserved when an alpha particle is ejected from a Pu-238 atom due to radioactive decay. Consequently, the entire particle of which that Pu-238 atom is a constituent experiences a movement similar to the recoil of a gun when a bullet is ejected. Furthermore, the particle often fractures in response to Pu-238 atom disintegration (yielding an alpha particle), with a small particle fragment also being ejected in order to conserve momentum. This process results in the continuous size reduction and transport of particles containing Pu-238 atoms, thus explaining movement of contamination along surfaces and through HEPA filters. A better understanding of the thermal behavior of {sup 238}PuO{sub 2} particles is needed to inform the planning process for the PuFF D&D project at the 235-F facility. There has been a concern that the surface temperature of individual particles may be high enough to cause problems with decontamination equipment and materials as a result of heat generation due to radioactive decay. A calculation under conservative assumptions shows that the surface temperature of particles less than about 100 {micro}m diameter is not appreciably above ambient. Since most particles in PuFF are on order of 1 {micro}m in diameter, the effect of particle surface temperature on decontamination equipment and materials is expected to be minimal. The result of this calculation also indicates that thermal imaging, which has been under consideration as a method to monitor the progress of system decontamination efforts would not likely be effective. The use of strippable coating was suggested as a possible alternative to other decontamination techniques. One particular system (i.e., Decon Gel 1101) may offer significant advantages over conventional liquid decontamination solut

  6. Verification of the content, isotopic composition and age of plutonium in Pu-Be neutron sources by gamma-spectrometry

    E-Print Network [OSTI]

    Cong Tam Nguyen

    2005-08-29T23:59:59.000Z

    A non-destructive, gamma-spectrometric method for verifying the plutonium content of Pu-Be neutron sources has been developed. It is also shown that the isotopic composition and the age of plutonium (Pu) can be determined in the intensive neutron field of these sources by the ``Multi-Group Analysis'' method. Gamma spectra were taken in the far-field of the sample, which was assumed to be cylindrical. The isotopic composition and the age of Pu were determined using a commercial implementation of the Multi-Group Analysis algorithm. The Pu content of the sources was evaluated from the count rates of the gamma-peaks of 239Pu, relying on the assumption that the gamma-rays are coming to the detector parallel to each other. The determination of the specific neutron yields and the problem of neutron damage to the detector are also discussed.

  7. Verification of the content, isotopic composition and age of plutonium in Pu-Be neutron sources by gamma-spectrometry

    E-Print Network [OSTI]

    Nguyen, C T

    2006-01-01T23:59:59.000Z

    A non-destructive, gamma-spectrometric method for verifying the plutonium content of Pu-Be neutron sources has been developed. It is also shown that the isotopic composition and the age of plutonium (Pu) can be determined in the intensive neutron field of these sources by the ``Multi-Group Analysis'' method. Gamma spectra were taken in the far-field of the sample, which was assumed to be cylindrical. The isotopic composition and the age of Pu were determined using a commercial implementation of the Multi-Group Analysis algorithm. The Pu content of the sources was evaluated from the count rates of the gamma-peaks of 239Pu, relying on the assumption that the gamma-rays are coming to the detector parallel to each other. The determination of the specific neutron yields and the problem of neutron damage to the detector are also discussed.

  8. Conceptual designs for a long term {sup 238}PuO{sub 2} storage vessel

    SciTech Connect (OSTI)

    Kwon, D.M.; Replogle, W.C.

    1996-08-01T23:59:59.000Z

    This is a report on conceptual designs for a long term, 250 years, storage container for plutonium oxide ([sup 238]PuO[sub 2]). These conceptual designs are based on the use of a quartz filter to release the helium generated during the plutonium decay. In this report a review of filter material selection, design concepts, thermal modeling, and filter performance are discussed.

  9. Hidden disorder in the ?'?? transformation of Pu-1.9 at.% Ga

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

    Jeffries, J. R.; Manley, M. E.; Wall, M. A.; Blobaum, K. J. M.; Schwartz, A. J.

    2012-06-01T23:59:59.000Z

    Enthalpy and entropy are thermodynamic quantities critical to determining how and at what temperature a phase transition occurs. At a phase transition, the enthalpy and temperature-weighted entropy differences between two phases are equal (?H=T?S), but there are materials where this balance has not been experimentally or theoretically realized, leading to the idea of hidden order and disorder. In a Pu-1.9 at. % Ga alloy, the ? phase is retained as a metastable state at room temperature, but at low temperatures, the ? phase yields to a mixed-phase microstructure of ?- and ?'-Pu. The previously measured sources of entropy associated withmore »the ?'?? transformation fail to sum to the entropy predicted theoretically. We report an experimental measurement of the entropy of the ?'?? transformation that corroborates the theoretical prediction, and implies that only about 65% of the entropy stabilizing the ? phase is accounted for, leaving a missing entropy of about 0.5 kB/atom. Some previously proposed mechanisms for generating entropy are discussed, but none seem capable of providing the necessary disorder to stabilize the ? phase. This hidden disorder represents multiple accessible states per atom within the ? phase of Pu that may not be included in our current understanding of the properties and phase stability of ?-Pu.« less

  10. IN FORMATION PU BLIC ATION SC H EME TITLE Agency plan for The Australian National University

    E-Print Network [OSTI]

    1 | IN FORMATION PU BLIC ATION SC H EME TITLE Agency plan for The Australian National University on its website. It will be directly accessible from the webpage foi.anu.edu.au and be identified possible, provide online content that can be searched by web browsers Provide a search function

  11. Production of 239 Pu from a natural Uranium disk and "hot" rock using a neutron howitzer

    E-Print Network [OSTI]

    Joseph Steiner; Aaron Anderson; Michael De Marco

    2008-05-23T23:59:59.000Z

    A neutron howitzer was used to produce 239Np from the targets of natural U and a hot rock. An intrinsic Germanium detector enabled the observations of the gamma rays in the decay of 239Np and a determination of its half life of 2.3 days. This shows that 239Pu had been produced in both targets

  12. Determination of the 242Pu Branching Ratio via Alpha-Gamma Coincidence

    SciTech Connect (OSTI)

    Wang, T F

    2012-05-24T23:59:59.000Z

    When the burn-up is high, the {sup 242}Pu isotopic content becomes more important. The traditional correlation method will fail. The {sup 242}Pu isotopic content in the sample plays an essential role if the neutron coincidence method is used to quantify the total amount of plutonium. In one of the earlier measurements we had a chance to measure an isotopic pure (> 99.95 %) {sup 242}Pu thick sample and realized that the difference in the branching ratio (BR) value among current nuclear data3) for the two important gamma-rays at 103.5-keV and 158.8-keV. In this study, the thick sample was counted on a 15% ORTEC safeguards type HPGe to further improve BR determination of the 159-keV gamma-ray. Furthermore, we have made a thin {sup 242}Pu sample from the thick sample and performed alpha-gamma coincidence measurements. Our preliminary gamma-ray BR results are 4.37(6) E-4, 2.79(8) E-5, and 2.25(8) E-6 for 44.9-keV, 103.5-keV, and 158.9-keV, respectively.

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

    DOE Patents [OSTI]

    Tomczuk, Z.; Miller, W.E.

    1992-01-01T23:59:59.000Z

    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}.

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

    DOE Patents [OSTI]

    Tomczuk, Z.; Miller, W.E.

    1994-10-18T23:59:59.000Z

    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].

  15. 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)

    1994-01-01T23:59:59.000Z

    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.

  16. Hidden disorder in the ?'?? transformation of Pu-1.9 at.% Ga

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

    Jeffries, J. R.; Manley, M. E.; Wall, M. A.; Blobaum, K. J. M.; Schwartz, A. J.

    2012-06-01T23:59:59.000Z

    Enthalpy and entropy are thermodynamic quantities critical to determining how and at what temperature a phase transition occurs. At a phase transition, the enthalpy and temperature-weighted entropy differences between two phases are equal (?H=T?S), but there are materials where this balance has not been experimentally or theoretically realized, leading to the idea of hidden order and disorder. In a Pu-1.9 at. % Ga alloy, the ? phase is retained as a metastable state at room temperature, but at low temperatures, the ? phase yields to a mixed-phase microstructure of ?- and ?'-Pu. The previously measured sources of entropy associated with the ?'?? transformation fail to sum to the entropy predicted theoretically. We report an experimental measurement of the entropy of the ?'?? transformation that corroborates the theoretical prediction, and implies that only about 65% of the entropy stabilizing the ? phase is accounted for, leaving a missing entropy of about 0.5 kB/atom. Some previously proposed mechanisms for generating entropy are discussed, but none seem capable of providing the necessary disorder to stabilize the ? phase. This hidden disorder represents multiple accessible states per atom within the ? phase of Pu that may not be included in our current understanding of the properties and phase stability of ?-Pu.

  17. Estimates for Pu-239 loadings in burial ground culverts based on fast/slow neutron measurements

    SciTech Connect (OSTI)

    Winn, W.G.; Hochel, R.C.; Hofstetter, K.J.; Sigg, R.A.

    1989-08-15T23:59:59.000Z

    This report provides guideline estimates for Pu-239 mass loadings in selected burial ground culverts. The relatively high recorded Pu-239 contents of these culverts have been appraised as suspect relative to criticality concerns, because they were assayed only with the solid waste monitor (SWM) per gamma-ray counting. After 1985, subsequent waste was also assayed with the neutron coincidence counter (NCC), and a comparison of the assay methods showed that the NCC generally yielded higher assays than the SWM. These higher NCC readings signaled a need to conduct non-destructive/non-intrusive nuclear interrogations of these culverts, and a technical team conducted scoping measurements to illustrate potential assay methods based on neutron and/or gamma counting. A fast/slow neutron method has been developed to estimate the Pu-239 in the culverts. In addition, loading records include the SWM assays of all Pu-239 cuts of some of the culvert drums and these data are useful in estimating the corresponding NCC drum assays from NCC vs SWM data. Together, these methods yield predictions based on direct measurements and statistical inference.

  18. /sup 238/Pu fuel-form processes. Quarterly report, October-December 1981

    SciTech Connect (OSTI)

    Not Available

    1982-05-01T23:59:59.000Z

    Progress in the Savannah River /sup 238/Pu Fuel Form Program is summarized. Work during this period concentrated on the extensive cracking of the /sup 238/PuO/sub 2/ fuel form prior to encapsulation in the iridium containment shell for heat sources. This cracking results in increased recycle cost and decreased production efficiency. To better understand this cracking, Savannah River Laboratory (SRL) has made an extensive review of the development of /sup 238/PuO/sub 2/ fuel forms from small-scale Multi-hundred Watt (MHW) pellets through the current GPHS full-scale pellet production. Historically, /sup 238/PuO/sub 2/ fuel has almost always been uncracked after hot pressing in a graphite die, but has emerged cracked and fragile from the final heat-treatment furnace. The cracking tendency depends on the microstructure of the fuel form and on the hot pressing conditions used to fabricate it. In general, a microstructure of large intershard porosity is more desirable because it allows internal gas to escape more readily and it can absorb more reoxidation strain. Studies of the GPHS microstructure showed that the internal structures of typical GPHS Pellets fabricated at LANL and in the PEF differed significantly. The LANL pellets had severe density gradients and were extensively cracked.

  19. Le barbare : une nouvelle catgorie stratgique ?

    E-Print Network [OSTI]

    Boyer, Edmond

    diplomate et le guerrier... Lambassadeur et le soldat vivent et symbolisent les relations internationales1 . Ces figures du soldat et du diplomate si chères à Aron afin de penser la conduite diplomatico barbare. Contre lui, le soldat ne peut pas vraiment se battre de manière frontale. Avec lui, le diplomate

  20. Actualits sur le traitement hormonal substitutif-

    E-Print Network [OSTI]

    Boyer, Edmond

    Vaquez, la thrombocytémie essentielle, la splénomégalie myéloïde ou myélofi- brose primitive, le syndrome

  1. Jules Verne LE SPHINX DES GLACES

    E-Print Network [OSTI]

    HarÂ?El, Zvi

    'îlot Bennet ........................................................225 Chapitre XVI L'île Tsalal

  2. Congrs AFC Tunis 2006 LE COMPORTEMENT SOCIALEMENT

    E-Print Network [OSTI]

    Boyer, Edmond

    lagenda 21. Quelques années plus tard, Les Nations Unies ont lancé le Global Compact, initiative destinée

  3. LE COMPORTEMENT SOCIALEMENT RESPONSABLE DES ENTREPRISES : UNE

    E-Print Network [OSTI]

    Boyer, Edmond

    années plus tard, Les Nations Unies ont lancé le Global Compact, initiative destinée aux entreprises et

  4. Le projet PLACO Jacquelin Charbonnel

    E-Print Network [OSTI]

    van Tiggelen, Bart

    d´epart Plate-forme en Ligne pour les Math´ematiques (PLM) mise en place par le r´eseau Mathrice/10/01 3 / 14 #12;Point de d´epart Plate-forme en Ligne pour les Math´ematiques (PLM) mise en place par le;Services de la PLM noms de domaine listes de diffusion agenda partagés disque réseau VPN annuaire de la

  5. Le LHC, un tunnel cosmique

    ScienceCinema (OSTI)

    None

    2011-10-06T23:59:59.000Z

    Et si la lumière au bout du tunnel du LHC était cosmique ? En d?autres termes, qu?est-ce que le LHC peut nous apporter dans la connaissance de l?Univers ? Car la montée en énergie des accélérateurs de particules nous permet de mieux appréhender l?univers primordial, chaud et dense. Mais dans quel sens dit-on que le LHC reproduit des conditions proches du Big bang ? Quelles informations nous apporte-t-il sur le contenu de l?Univers ? La matière noire est-elle détectable au LHC ? L?énergie noire ? Pourquoi l?antimatière accumulée au CERN est-elle si rare dans l?Univers ? Et si le CERN a bâti sa réputation sur l?exploration des forces faibles et fortes qui opèrent au sein des atomes et de leurs noyaux, est-ce que le LHC peut nous apporter des informations sur la force gravitationnelle qui gouverne l?évolution cosmique ? Depuis une trentaine d?années, notre compréhension de l?univers dans ses plus grandes dimensions et l?appréhension de son comportement aux plus petites distances sont intimement liées : en quoi le LHC va-t-il tester expérimentalement cette vision unifiée ? Tout public, entrée libre / Réservations au +41 (0)22 767 76 76

  6. The Solubility of 242PuO2 in the Presence of Aqueous Fe(II): The Impact of Precipitate Preparation

    SciTech Connect (OSTI)

    Felmy, Andrew R.; Moore, Dean A.; Buck, Edgar C.; Conradson, Steven D.; Kukkadapu, Ravi K.; Sweet, Lucas E.; Abrecht, David G.; Ilton, Eugene S.

    2014-10-01T23:59:59.000Z

    The solubility of different forms of precipitated 242PuO2(am) were examined in solutions containing aqueous Fe(II) over a range of pH values. The first series of 242PuO2(am) suspensions were prepared from a 242Pu(IV) stock that had been treated with thenoyltrifluoroacetone (TTA) to remove the 241Am originating from the decay of 241Pu. These 242PuO2(am) suspensions showed much higher solubilities at the same pH value and Fe(II) concentration than previous studies using 239PuO2(am). X ray absorption fine structure (XAFS) spectroscopy of the precipitates showed a substantially reduced Pu-Pu backscatter over that previously observed in 242PuO2(am) precipitates, indicating that the 242PuO2(am) precipitates purified using TTA lacked the long range order previously found in 239PuO2(am) precipitates. The Pu(IV) stock solution was subsequently repurified using an ion exchange resin and an additional series of 242PuO2(am) precipitates prepared. These suspensions showed higher redox potentials and total aqueous Pu concentrations than the TTA purified stock solution. The higher redox potential and aqueous Pu concentrations were in general agreement with previous studies on 242PuO2(am) precipitates, presumably due to the removal of possible organic compounds originally present in the TTA purified stock. 242PuO2(am) suspensions prepared with both stock solutions showed almost identical solubilities in Fe(II) containing solutions even though the initial aqueous Pu concentrations before the addition of Fe(II) were orders of magnitude different. By examining the solubility of 242PuO2(am) prepared from both stocks in this way we have essentially approached equilibrium from both the undersaturated and oversaturated conditions. The final aqueous Pu concentrations are predictable using a chemical equilibrium model which includes the formation of a nanometer sized Fe(III) reaction product, identified in the 242PuO2(am) suspension both by use of 57Fe Mössbauer spectroscopy and transmission electron microscopy (TEM) analysis.

  7. . 370. JOSEF PROKS ET JAROMIR GROH. -LE GOUT DFECTUEUX LE GOUT DFECTUEUX (GOUT HUILEUX-RANCI,

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    . 370. JOSEF PROKS ET JAROMIR GROH. - LE GOUT DÃ?FECTUEUX LE GOUT DÃ?FECTUEUX (GOUT HUILEUX-RANCI, SU

  8. Tribal Leader Energy Education Initiative Workshop - Tracey LeBeau...

    Energy Savers [EERE]

    Workshop - Tracey LeBeau's Welcome Letter Tribal Leader Energy Education Initiative Workshop - Tracey LeBeau's Welcome Letter Tracey LeBeauWelcomeLetter.pdf More Documents &...

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

    SciTech Connect (OSTI)

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

    1987-01-01T23:59:59.000Z

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

  10. Phonon dispersion curves determination in (delta)-phase Pu-Ga alloys

    SciTech Connect (OSTI)

    Wong, J; Clatterbuck, D; Occelli, F; Farber, D; Schwartz, A; Wall, M; Boro, C; Krisch, M; Beraud, A; Chiang, T; Xu, R; Hong, H; Zschack, P; Tamura, N

    2006-02-07T23:59:59.000Z

    We have designed and successfully employed a novel microbeam on large grain sample concept to conduct high resolution inelastic x-ray scattering (HRIXS) experiments to map the full phonon dispersion curves of an fcc {delta}-phase Pu-Ga alloy. This approach obviates experimental difficulties with conventional inelastic neutron scattering due to the high absorption cross section of the common {sup 239}Pu isotope and the non-availability of large (mm size) single crystal materials for Pu and its alloys. A classical Born von-Karman force constant model was used to model the experimental results, and no less than 4th nearest neighbor interactions had to be included to account for the observation. Several unusual features including, a large elastic anisotropy, a small shear elastic modulus, (C{sub 11}-C{sub 12})/2, a Kohn-like anomaly in the T{sub 1}[011] branch, and a pronounced softening of the T[111] branch towards the L point in the Brillouin are found. These features may be related to the phase transitions of plutonium and to strong coupling between the crystal structure and the 5f valence instabilities. Our results represent the first full phonon dispersions ever obtained for any Pu-bearing material, thus ending a 40-year quest for this fundamental data. The phonon data also provide a critical test for theoretical treatments of highly correlated 5f electron systems as exemplified by recent dynamical mean field theory (DMFT) calculations for {delta}-plutonium. We also conducted thermal diffuse scattering experiments to study the T(111) dispersion at low temperatures with an attempt to gain insight into bending of the T(111) branch in relationship to the {delta} {yields} {alpha}{prime} transformation.

  11. Ostwald Ripening and Its Effect on PuO2 Particle Size in Hanford Tank Waste

    SciTech Connect (OSTI)

    Delegard, Calvin H.

    2011-09-29T23:59:59.000Z

    Between 1944 and 1989, the Hanford Site produced 60 percent (54.5 metric tons) of the United States weapons plutonium and produced an additional 12.9 metric tons of fuels-grade plutonium. High activity wastes, including plutonium lost from the separations processes used to isolate the plutonium, were discharged to underground storage tanks during these operations. Plutonium in the Hanford tank farms is estimated to be {approx}700 kg but may be up to {approx}1000 kg. Despite these apparent large quantities, the average plutonium concentration in the {approx}200 million liter tank waste volume is only about 0.003 grams per liter ({approx}0.0002 wt%). The plutonium is largely associated with low solubility metal hydroxide/oxide sludges where its low concentration and intimate mixture with neutron-absorbing elements (e.g., iron) are credited in nuclear criticality safety. However, concerns have been expressed that plutonium, in the form of plutonium hydrous oxide, PuO{sub 2} {center_dot} xH{sub 2}O, could undergo sufficient crystal growth through Ostwald ripening in the alkaline tank waste to potentially be separable from neutron absorbing constituents by settling or sedimentation. It was found that plutonium that entered the alkaline tank waste by precipitation through neutralization from acid solution is initially present as 2- to 3-nm (0.002- to 0.003-{mu}m) scale PuO{sub 2} {center_dot} xH{sub 2}O crystallite particles and grows from that point at exceedingly slow rates, posing no risk to physical segregation. These conclusions are reached by both general considerations of Ostwald ripening and specific observations of the behaviors of PuO{sub 2} and PuO{sub 2} {center_dot} xH{sub 2}O upon aging in alkaline solution.

  12. Genome-scale definition of the transcriptional programme associated with compromised PU.1 activity in Acute Myeloid Leukaemia

    E-Print Network [OSTI]

    Sive, Jonathan I.; Basilico, Silvia; Hannah, Rebecca; Kinston, Sarah J.; Calero-Nieto, Fernando J.; Göttgens, Berthold

    2015-01-01T23:59:59.000Z

    Transcriptional dysregulation is associated with haematological malignancy. Although mutations of the key haematopoietic transcription factor PU.1 are rare in human acute myeloid leukemia (AML), they are common in murine models of radiation...

  13. Code Generation Through Annotation of Macromolecular Structure Data John Biggs 1 , Calton Pu 1 , and Philip Bourne 2

    E-Print Network [OSTI]

    Bourne, Philip E.

    Code Generation Through Annotation of Macromolecular Structure Data John Biggs 1 , Calton Pu 1 & Technology P.O. Box 91000 Portland, OR 97291­1000 {biggs,calton}@cse.ogi.edu 2 San Diego Supercomputer Center

  14. NMIS With Gamma Spectrometry for Attributes of Pu and HEU, Explosives and Chemical Agents

    SciTech Connect (OSTI)

    Mihalczo, J. T.; Mattingly, J. K.; Mullens, J. A.; Neal, J. S.

    2002-05-10T23:59:59.000Z

    The concept for the system described herein is an active/passive Nuclear Materials Identification System{sup 2} (NMIS) that incorporates gamma ray spectrometry{sup 3}. This incorporation of gamma ray spectrometry would add existing capability into this system. This Multiple Attribute System can determine a wide variety of attributes for Pu and highly enriched uranium (HEU) of which a selected subset could be chosen. This system can be built using commercial off the shelf (COTS) components. NMIS systems are at All-Russian Scientific Research Institute of Experimental Physics (VNIIEF) and Russian Federal Nuclear Center Institute of Technical Physics, (VNIITF) and measurements with Pu have been performed at VNIIEF and analyzed successfully for mass and thickness of Pu. NMIS systems are being used successfully for HEU at the Y-12 National Security Complex. The use of active gamma ray spectrometry for high explosive HE and chemical agent detection is a well known activation analysis technique, and it is incorporated here. This report describes the system, explains the attribute determination methods for fissile materials, discusses technical issues to be resolved, discusses additional development needs, presents a schedule for building from COTS components, and assembly with existing components, and discusses implementation issues such as lack of need for facility modification and low radiation exposure.

  15. Minh Le | 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 Rank EERE: Alternative Fuels Data CenterEnergyGlossary ofHomeJC3Minh Le About Us Minh Le - Director,

  16. Effect of improved target designs on the sup 238 Pu production at the Fast Flux Test Reactor

    SciTech Connect (OSTI)

    Karnesky, R.A.; Wootan, D.W.; Jordheim, D.P. (Westinghouse Hanford Co., Richland, WA (United States))

    1991-11-01T23:59:59.000Z

    This paper present the results of a series of calculations made to determine the {sup 238}Pu production potential of several advanced target assembly designs in the Fast Flux Test Facility (FFTF). These calculations show that by using advanced target designs the intimately mix the {sup 237}Np target material with an yttrium hydride moderator, the FFTF has the potential of producing up to 30 kg of high-quality {sup 238}Pu per year.

  17. Technical Basis for Safe Operations with Pu-239 in NMS and S Facilities (F and H Areas)

    SciTech Connect (OSTI)

    Bronikowski, M.G.

    1999-03-18T23:59:59.000Z

    Plutonium-239 is now being processed in HB-Line and H-Canyon as well as FB-Line and F-Canyon. As part of the effort to upgrade the Authorization Basis for H Area facilities relative to nuclear criticality, a literature review of Pu polymer characteristics was conducted to establish a more quantitative vs. qualitative technical basis for safe operations. The results are also applicable to processing in F Area facilities.The chemistry of Pu polymer formation, precipitation, and depolymerization is complex. Establishing limits on acid concentrations of solutions or changing the valence to Pu(III) or Pu(VI) can prevent plutonium polymer formation in tanks in the B lines and canyons. For Pu(IV) solutions of 7 g/L or less, 0.22 M HNO3 prevents polymer formation at ambient temperature. This concentration should remain the minimum acid limit for the canyons and B lines when processing Pu-239 solutions. If the minimum acid concentration is compromised, the solution may need to be sampled and tested for the presence of polymer. If polymer is not detected, processing may proceed. If polymer is detected, adding HNO3 to a final concentration above 4 M is the safest method for handling the solution. The solution could also be heated to speed up the depolymerization process. Heating with > 4 M HNO3 will depolymerize the solution for further processing.Adsorption of Pu(IV) polymer onto the steel walls of canyon and B line tanks is likely to be 11 mg/cm2, a literature value for unpolished steel. This value will be confirmed by experimental work. Tank-to-tank transfers via steam jets are not expected to produce Pu(IV) polymer unless a larger than normal dilution occurs (e.g., >3 percent) at acidities below 0.4 M.

  18. LE JOURNAL DE PHYSIQUE LA CONDUCTION LECTRIQUE

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    LE JOURNAL DE PHYSIQUE ET LE RADIUM LA CONDUCTION ÉLECTRIQUE DES HYDROCARBURES LIQUIDES EN COUCHES hydrocarbures liquides en couches minces, signalé dans un précédent mémoire. Les expériences, faites dans des

  19. LE TOURISME DANS LES OASIS D'ALGERIE LE TOURISME SCIENTIFIQUE A TRAVERS LES CRATERES

    E-Print Network [OSTI]

    Boyer, Edmond

    1 LE TOURISME DANS LES OASIS D'ALGERIE LE TOURISME SCIENTIFIQUE A TRAVERS LES CRATERES, historiques, architecturaux, exotiques et autres. Les Oasis, en tant que zones singulières qui tranchent avec'excellence pour un tourisme particulier : le tourisme oasien. Les Oasis parsèment le désert saharien en Algérie

  20. LE CONTRLE DE GESTION LOGISTIQUE HOSPITALIER

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    , approvisionnement, transport, courrier, etc. Des réformes du management hospitalier français ont introduit une hospitalière dans le management des établissements hospitaliers, la forme qu'exerce le contrôle de gestion1 LE CONTRÔLE DE GESTION LOGISTIQUE HOSPITALIER Nicolas PETIT, doctorant à l'IGR-IAE de l

  1. Possible experimental evidence for the presence of double octupole states in {sup 240}Pu

    SciTech Connect (OSTI)

    Pascu, S.; Spieker, M.; Bucurescu, D.; Faestermann, T.; Hertenberger, R.; Skalacki, S.; Weber, S.; Wirth, H. F.; Zamfir, N. V.; Zilges, A. [Institut fuer Kernphysik, Universitaet zu Koeln, D-50937 Koeln, Germany and National Institute for Physics and Nuclear Engineering, R-77125, Bucharest-Magurele (Romania); Institut fuer Kernphysik, Universitaet zu Koeln, D-50937 Koeln (Germany); National Institute for Physics and Nuclear Engineering, R-77125, Bucharest-Magurele (Romania); Physik Department E12, Technische Universitaet Muenchen, D-85748 Garching (Germany); Sektion Physik, Ludwig-Maximilians-Universitaet Muenchen, D-85748 Garching (Germany); Institut fuer Kernphysik, Universitaet zu Koeln, D-50937 Koeln (Germany); Sektion Physik, Ludwig-Maximilians-Universitaet Muenchen, D-85748 Garching (Germany); National Institute for Physics and Nuclear Engineering, R-77125, Bucharest-Magurele (Romania); Institut fuer Kernphysik, Universitaet zu Koeln, D-50937 Koeln (Germany)

    2012-10-20T23:59:59.000Z

    Excited states in the {sup 240}Pu nucleus have been studied by means of the (p,t) reaction using the Q3D spectrometer and the focal plane detector from Munich. The comparison between experimental angular distributions and the DWBA calculations allowed the extraction of relative two-neutron transfer strengths. These observables may reveal important information about the structure of different states. The experimental two neutron strength for the 0{sup +}{sub 2} and 0{sup +}{sub 3} states is found in good agreement with the predictions of the IBA model, confirming the double octupole nature for the 0{sup +}{sub 2} state proposed in the previous studies.

  2. DOE plutonium disposition study: Pu consumption in ALWRs. Volume 2, Final report

    SciTech Connect (OSTI)

    Not Available

    1993-05-15T23:59:59.000Z

    The Department of Energy (DOE) has contracted with Asea Brown Boveri-Combustion Engineering (ABB-CE) to provide information on the capability of ABB-CE`s System 80 + Advanced Light Water Reactor (ALWR) to transform, through reactor burnup, 100 metric tonnes (MT) of weapons grade plutonium (Pu) into a form which is not readily useable in weapons. This information is being developed as part of DOE`s Plutonium Disposition Study, initiated by DOE in response to Congressional action. This document Volume 2, provides a discussion of: Plutonium Fuel Cycle; Technology Needs; Regulatory Considerations; Cost and Schedule Estimates; and Deployment Strategy.

  3. Possible Fine Structure in the Delayed Neutron Yields in the Resonance Region for Pu-239

    SciTech Connect (OSTI)

    Ohsawa, Takaaki; Torii, Takayuki [Department of Electrical and Electronic Engineering, Kinki University, Higashi-osaka 577-8502 (Japan); Hambsch, Franz-Josef [EC-JRC-Institute for Reference Materials and Measurements, Retieseweg 111, B-2440 Geel (Belgium)

    2005-05-24T23:59:59.000Z

    A method of analysis of fluctuation in the delayed neutron yield on the basis of the multimodal fission model was applied to the low-energy resolved resonances for Pu-239. The present calculation using recent data of the fluctuation of the mode branching ratios for the resolved resonances showed both positive and negative resonance structure in the delayed neutron yield relative to the thermal neutron value. This is in contrast to the U-235 case, for which mainly negative dips of about -3.5% were predicted.

  4. RAPID SEPARATION METHOD FOR 237NP AND PU ISOTOPES IN LARGE SOIL SAMPLES

    SciTech Connect (OSTI)

    Maxwell, S.; Culligan, B.; Noyes, G.

    2010-07-26T23:59:59.000Z

    A new rapid method for the determination of {sup 237}Np and Pu isotopes in soil and sediment samples has been developed at the Savannah River Site Environmental Lab (Aiken, SC, USA) that can be used for large soil samples. The new soil method utilizes an acid leaching method, iron/titanium hydroxide precipitation, a lanthanum fluoride soil matrix removal step, and a rapid column separation process with TEVA Resin. The large soil matrix is removed easily and rapidly using this two simple precipitations with high chemical recoveries and effective removal of interferences. Vacuum box technology and rapid flow rates are used to reduce analytical time.

  5. Attempt to produce element 120 in the 244Pu + 58Fe reaction

    SciTech Connect (OSTI)

    Oganessian, Y T; Utyonkov, V K; Lobanov, Y V; Abdullin, F S; Polyakov, A N; Sagaidak, R N; Shorokovsky, I V; Tsyganov, Y S; Voinov, A A; Mezentsev, A N; Subbotin, V G; Sukhov, A M; Subotic, K; Zagrebaev, V I; Dmitriev, S N; Henderson, R A; Moody, K J; Kenneally, J M; Landrum, J H; Shaughnessy, D A; Stoyer, M A; Stoyer, N J; Wilk, P A

    2008-10-24T23:59:59.000Z

    An experiment aimed at the synthesis of isotopes of element 120 has been performed using the {sup 244}Pu({sup 58}Fe,xn){sup 302-x} 120 reaction. No decay chains consistent with fusion-evaporation reaction products were observed during an irradiation with a beam dose of 7.1 x 10{sup 18} 330-MeV {sup 58}Fe projectiles. The sensitivity of the experiment corresponds to a cross section of 0.4 pb for the detection of one decay.

  6. Microsoft Word - Template_SLAC Proprietary Use Agreement_PU 11_14_13

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHighandSWPA / SPRA / USACE625 FINALOptimization ofIDM UID: D_R22L3M verPU

  7. Summary of Puʻu ʻOʻo - Kupaianaha Eruption, Kilauea Volcano, Hawaii |

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro Industries PvtStratosolar Jump to: navigation, searchNewOpen Energy Information Puʻu

  8. Criticality Safety Evaluations on the Use of 200-gram Pu Mass Limit for RHWM Waste Storage Operations

    SciTech Connect (OSTI)

    Chou, P

    2011-12-14T23:59:59.000Z

    This work establishes the criticality safety technical basis to increase the fissile mass limit from 120 grams to 200 grams for Type A 55-gallon drums and their equivalents. Current RHWM fissile mass limit is 120 grams Pu for Type A 55-gallon containers and their equivalent. In order to increase the Type A 55-gallon drum limit to 200 grams, a few additional criticality safety control requirements are needed on moderators, reflectors, and array controls to ensure that the 200-gram Pu drums remain criticality safe with inadvertent criticality remains incredible. The purpose of this work is to analyze the use of 200-gram Pu drum mass limit for waste storage operations in Radioactive and Hazardous Waste Management (RHWM) Facilities. In this evaluation, the criticality safety controls associated with the 200-gram Pu drums are established for the RHWM waste storage operations. With the implementation of these criticality safety controls, the 200-gram Pu waste drum storage operations are demonstrated to be criticality safe and meet the double-contingency-principle requirement per DOE O 420.1.

  9. Nuclear Materials Identification System (NMIS) with Gamma Spectrometry for Attributes of Pu, HEU, and Detection of HE and Chemical Agents

    SciTech Connect (OSTI)

    Mihalczo, J. T.; Mattingly, J. K.; Mullens, J. A.; Neal, J. S.

    2002-05-01T23:59:59.000Z

    A combined Nuclear Materials Identification System (NMIS)-gamma ray spectrometry system can be used passively to obtain the following attributes of Pu: presence, fissile mass, 240/239 ratio, and metal vs. oxide. This system can also be used with a small, portable, DT neutron generator to measure the attributes of highly enriched uranium (HEU): presence, fissile mass, enrichment, metal vs. oxide; and detect the presence of high explosives (HE). For the passive system, time-dependent coincidence distributions can be used for the presence, fissile mass, metal vs. oxide for Pu, and gamma-ray spectrometry can be used for 239/240 ratio and presence. So presence can be confirmed by two methods. For the active system with a DT neutron generator, all four attributes for both Pu and HEU can be determined from various features of the time-dependent coincidence distribution measurements for both Pu and HEU. Active gamma ray spectrometry would also give presence and 240/239 ratio for Pu, enrichment for HEU, and metal vs. oxide for both. Active gamma ray spectrometry would determine the presence of HE. The various features of time-dependent coincidence distributions and gamma ray spectrometry that determine these attributes are discussed with some examples from previous determinations.

  10. RONAN LE COADIC La souffrance en chantant

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Bretons mobilisés, chiffre nettement supérieur à la moyenne française : entre 16 % et 17 % des soldats'on a pu parler d'un « immense silence du peuple des tranchées »8 . Si les soldats bretons paraissent, dans très utilisé en 1914 pour exalter les soldats mobilisés9 . Les Bretons ont aussi composé leurs propres

  11. GRPAUT: a program for Pu isotopic analysis (a user's guide). ISPO task A. 76

    SciTech Connect (OSTI)

    Fleissner, J G

    1981-01-30T23:59:59.000Z

    GRPAUT is a modular program for performing automated Pu isotopic analysis supplied to the International Atomic Energy Agency (IAEA) per ISPO Task A.76. Section I of this user's guide for GRPAUT presents an overview of the various programs and disk files that are used in performing a Pu isotopic analysis. Section II describes the program GRFEDT which is used in creating and editing the analysis parameter file that contains all the spectroscopic information needed at runtime by GRPAUT. An example of the dialog and output of GRFEDT is shown in Appendix B. Section III describes the operation of the various GRPAUT modules: GRPNL2, the peak stripping module; EFFCH2, the efficiency calculation module; and ISOAUT, the isotopic calculation module. (A description of the peak fitting methodology employed by GRPNL2 is presented in Appendix A.) Finally, Section IV outlines the procedure for determining the peak shape constants for a detector system and describes the operation of the program used to create and edit the peak shape parameter files. An output of GRPAUT, showing an example of a complete isotopic analysis, is presented in Appendix C. Source listings of all the Fortran programs supplied to the Agency under ISPO Task A.76 are contained in Appendix E.

  12. /sup 238/PuO/sub 2//Mo-50 wt% Re compatibility at 800 and 1000/sup 0/C

    SciTech Connect (OSTI)

    Schaeffer, D.R.; Teaney, P.E.

    1980-07-18T23:59:59.000Z

    The compatibility of Mo-50 wt % Re with /sup 238/PuO/sub 2/ was investigated after heat treatments of up to 720 days at 800/sup 0/C and 180 days at 1000/sup 0/C. At 800/sup 0/C, a 1-..mu..m thick, continuous layer of molybdenum oxide resulted. At 1000/sup 0/C, the oxide reaction product contained some plutonium and did not appear continuous. At 1000/sup 0/C, a layer of intermetallic formed at the Mo-Re edge, beneath the oxide layer, creating a barrier between the Mo-50 wt % Re and the /sup 238/PuO/sub 2/. The intermetallic layer was promoted by the iron impurity in the /sup 238/PuO/sub 2/.

  13. Madame, Monsieur, Chres Amies, Chers Amis, Le Fonds pour la Recherche Mdicale dans le Hainaut (FRMH) organise, comme chaque anne, une

    E-Print Network [OSTI]

    Dupont, Stéphane

    Conservatoire royal de Mons, le clarinettiste Ronald Van Spaendonck et le pianiste Johan Schmidt (Lauréat du

  14. PLANTS AS BIO-MONITORS FOR 137CS, 238PU, 239, 240PU AND 40K AT THE SAVANNAH RIVER SITE

    SciTech Connect (OSTI)

    Caldwell, E.; Duff, M.; Ferguson, C.

    2010-12-16T23:59:59.000Z

    The nuclear fuel cycle generates a considerable amount of radioactive waste, which often includes nuclear fission products, such as strontium-90 ({sup 90}Sr) and cesium-137 ({sup 137}Cs), and actinides such as uranium (U) and plutonium (Pu). When released into the environment, large quantities of these radionuclides can present considerable problems to man and biota due to their radioactive nature and, in some cases as with the actinides, their chemical toxicity. Radionuclides are expected to decay at a known rate. Yet, research has shown the rate of elimination from an ecosystem to differ from the decay rate due to physical, chemical and biological processes that remove the contaminant or reduce its biological availability. Knowledge regarding the rate by which a contaminant is eliminated from an ecosystem (ecological half-life) is important for evaluating the duration and potential severity of risk. To better understand a contaminants impact on an environment, consideration should be given to plants. As primary producers, they represent an important mode of contamination transfer from sediments and soils into the food chain. Contaminants that are chemically and/or physically sequestered in a media are less likely to be bio-available to plants and therefore an ecosystem.

  15. LE SYSTEME PHONOLOGIQUE DU PUREPECHA Claudine Chamoreau

    E-Print Network [OSTI]

    Boyer, Edmond

    langues : «les langues n'évoluent pas dans des tours d'ivoire » dit justement Martinet3 (p. 89 nombreuses situations de communication sur la langue vernaculaire. Langue parlée au Mexique, au nord-ouest de que le nombre d'enfants est moindre dans les foyers où le purepecha est parlé. Tel n'est pas le cas

  16. LETTRES A LA RDACTION LE JOURNAL DE PHYSIQUE ET LE RADIUM. TOME 15, OCTOBRE 1954,

    E-Print Network [OSTI]

    Boyer, Edmond

    charges ioniques dans le domaine des faibles énergies. On propose une relation de la forme La constante C

  17. Le logiciel "Tigre" en formation PLC 1 Grtice J. Vincent Le logiciel Tigre en formation PLC

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    "Tigre" en formation PLC 1 Grétice J. Vincent Le logiciel « Tigre » en formation PLC J. Vincent Le;______________________________________________________________________________________ Le logiciel "Tigre" en formation PLC 2 Grétice J. Vincent 1.1. La lecture Voici l'écran d;______________________________________________________________________________________ Le logiciel "Tigre" en formation PLC 3 Grétice J. Vincent Figure 3 1.2. La démonstration Voici l

  18. JOURNEE MONDIALE DE LUTTE CONTRE LE SIDA 2014 LE PROGRAMME BREST

    E-Print Network [OSTI]

    Brest, Université de

    ludique « sexe et chocolat ». - Sur le temps de midi, les infirmiers du SUMPPS de l'UBO et les étudiants

  19. -Le_rachat_2005-06-14.doc Le rachat des Corses esclaves Tunis en 1779

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 / 19 - Le_rachat_2005-06-14.doc Le rachat des Corses esclaves à Tunis en 1779 L'établissement de), voir la bibliographie halshs-00162606,version1-14Jul2007 #12;2 / 19 - Le_rachat_2005-06-14.doc Esclaves

  20. Tecnologie ICT per le Smart City Prof. R. Laurini Tecnologie ICT per le Smart City

    E-Print Network [OSTI]

    Laurini, Robert

    Tecnologie ICT per le Smart City Prof. R. Laurini 1 Tecnologie ICT per le Smart City 1 ­ Le smart-fertilization tra ICT e Smart City 4 ­ Problemi emergenti 5 ­ Conclusioni Definizione di Carlo Ratti (MIT) · Una, efficiente, ­ aperta, collaborativa, ­ creativa, digitale ­ e green European Smart Cities · Volendo essere

  1. thorium en quilibre radioactif. Le thorium X donne le parcours 5 cm. 7, et l'manation du thorium, pour

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    181 thorium en équilibre radioactif. Le thorium X donne le parcours 5 cm. 7, et l'émanation du thorium, pour laquelle on a été obligé d'employer une méthode de scintillations, le parcours 5,5 cm. Les parcours des rayions a émis par le thorium et ses produits sont réu- nis dans le tableau ci-contre, ou l

  2. 137Cs(90Sr) and Pu isotopes in the Pacific Ocean sources & trends

    SciTech Connect (OSTI)

    Hamilton, T.F., Millies-Lacrox, J.C. [Service Mixte de Securite Radologique, Mondhery (France); Hong, G.H. [Korea Ocean Research and Development Institute, Ansan (Korea)

    1996-11-01T23:59:59.000Z

    The main source of artificial radioactivity in the world`s oceans can be attributed to worldwide fallout from atmospheric nuclear weapons testing. Measurements of selected artificial radionuclides in the Pacific Ocean were first conducted in the 1960`s where it was observed that fallout radioactivity had penetrated the deep ocean. Extensive studies carried out during the 1973-74 GEOSECS provided the first comprehensive data on the lateral and vertical distributions of {sup 9O}Sr, {sup 137}Cs and Pu isotopes in the Pacific on a basin wide scale. Estimates of radionuclide inventories in excess of amounts predicted to be delivered by global fallout alone were attributed to close-in fallout and tropospheric inputs from early U.S. tests conducted on Bikini and Enewetak Atolls in the Equatorial Pacific. In general, levels of fallout radionuclides (including {sup 9O}Sr, {sup 137}Cs and Pu isotopes) in the surface waters of the Pacific Ocean have decreased considerably over the past 4 decades and are now much more homogeneously distributed. Resuspension and the subsequent deposition of fallout radionuclides from previously deposited debris on land has become an important source term for the surface ocean. This can be clearly seen in measurements of fallout radionuclides in mineral aerosols over the Korean Peninsula (Yellow dust events). Radionuclides may also be transported from land to sea in river runoff-these transport mechanisms are more important in the Pacific Ocean where large quantities of river water and suspended sands/fluvial sediments reach the coastal zone. Another unique source of artificial radionuclides in the Pacific Ocean is derived from the slow resolubilization and transport of radionuclides deposited in contaminated lagoon and slope sediments near U.S. and French test sites. Although there is a small but significant flux of artificial radionuclides depositing on the sea floor, > 80% of the total 239, {sup 240}Pu inventory and > 95% of the total {sup 137}Cs inventory remains in the water column. Studies conducted through the 1980`s appear to be consistent with earlier findings and indicate that radionuclide inventories in mid-northern latitudes are at least a factor of two above those expected from global fallout alone. The long term persistence of close-in and/or stratospheric fallout from nuclear weapons testing in the Marshall Islands still appears to be the only plausible explanation for this anomaly.

  3. Le Wadi Kharrar Lieu du baptme de Jsus de Nazareth ?

    E-Print Network [OSTI]

    Boyer, Edmond

    1 Le Wadi Kharrar Lieu du baptême de Jésus de Nazareth ? Par Wulfran Barthélemy Ingénieur d un ruisseau coulant d'est en ouest depuis le plateau jordanien : le Wadi Kharrar. Contrastant avec

  4. Isothermal Martensitic and Pressure-Induced ? to ?? Phase Transformations in a Pu-Ga Alloy

    SciTech Connect (OSTI)

    Schwartz, A J; Wall, M A; Farber, D L; Moore, K T; Blobaum, K M

    2007-09-10T23:59:59.000Z

    A Pu-2 at.% Ga alloy specimen is slowly compressed to {approx}1 GPa in a large volume moissanite anvil cell to induce the face-centered cubic {delta} to simple monoclinic {alpha}{prime} phase transformation. Optical microscopy, x-ray diffraction, and transmission electron microscopy of the specimen recovered to ambient pressure reveal that the vast majority of the microstructure consists of the {alpha}{prime} phase with grain sizes ranging from 10 nm to several hundred nm, with the remainder being {delta} phase dispersed between the {alpha}{prime} grains. This morphology is in contrast to the transformation product of the low-temperature isothermal martensite in which the lath-shaped {alpha}{prime} particles are {approx}20 {micro}m by 2 {micro}m.

  5. An evaluation of alternate production methods for Pu-238 general purpose heat source pellets

    SciTech Connect (OSTI)

    Mark Borland; Steve Frank

    2009-06-01T23:59:59.000Z

    For the past half century, the National Aeronautics and Space Administration (NASA) has used Radioisotope Thermoelectric Generators (RTG) to power deep space satellites. Fabricating heat sources for RTGs, specifically General Purpose Heat Sources (GPHSs), has remained essentially unchanged since their development in the 1970s. Meanwhile, 30 years of technological advancements have been made in the applicable fields of chemistry, manufacturing and control systems. This paper evaluates alternative processes that could be used to produce Pu 238 fueled heat sources. Specifically, this paper discusses the production of the plutonium-oxide granules, which are the input stream to the ceramic pressing and sintering processes. Alternate chemical processes are compared to current methods to determine if alternative fabrication processes could reduce the hazards, especially the production of respirable fines, while producing an equivalent GPHS product.

  6. Microscopic Calculation of 240Pu Scission with a Finite-Range Effective Force

    SciTech Connect (OSTI)

    Younes, W; Gogny, D

    2009-05-04T23:59:59.000Z

    Hartree-Fock-Bogoliubov calculations of hot fission in {sup 240}Pu have been performed with a newly-implemented code that uses the D1S finite-range effective interaction. The hot-scission line is identified in the quadrupole-octupole-moment coordinate space. Fission-fragment shapes are extracted from the calculations. A benchmark calculation for {sup 226}Th is obtained and compared to results in the literature. In addition, technical aspects of the use of HFB calculations for fission studies are examined in detail. In particular, the identification of scission configurations, the sensitivity of near-scission calculations to the choice of collective coordinates in the HFB iterations, and the formalism for the adjustment of collective-variable constraints are discussed. The power of the constraint-adjustment algorithm is illustrated with calculations near the critical scission configurations with up to seven simultaneous constraints.

  7. DOE Plutonium Disposition Study: Pu consumption in ALWRs. Volume 1, Final report

    SciTech Connect (OSTI)

    Not Available

    1993-05-15T23:59:59.000Z

    The Department of Energy (DOE) has contracted with Asea Brown Boveri-Combustion Engineering (ABB-CE) to provide information on the capability of ABB-CE`s System 80 + Advanced Light Water Reactor (ALWR) to transform, through reactor burnup, 100 metric tonnes (MT) of weapons grade plutonium (Pu) into a form which is not readily useable in weapons. This information is being developed as part of DOE`s Plutonium Disposition Study, initiated by DOE in response to Congressional action. This document, Volume 1, presents a technical description of the various elements of the System 80 + Standard Plant Design upon which the Plutonium Disposition Study was based. The System 80 + Standard Design is fully developed and directly suited to meeting the mission objectives for plutonium disposal. The bass U0{sub 2} plant design is discussed here.

  8. Exploring simultaneous single and coincident gamma-ray measurements for U/Pu assay in safeguards

    SciTech Connect (OSTI)

    Wang, T. F. [Lawrence Livermore National Laboratory, Livermore, CA 94550 (United States); Horne, S. M. [Nuclear and Radiation Engineering Program, Mechanical Engineering Dept., Univ. of Texas at Austin, Austin, TX 78712 (United States); Henderson, R. A.; Roberts, K. E.; Vogt, D. K. [Lawrence Livermore National Laboratory, Livermore, CA 94550 (United States)

    2011-07-01T23:59:59.000Z

    Using a broad range of gamma-ray uranium standards and two plutonium samples of known isotopic content, list mode gamma ray information from two Compton suppressed and one planar HPGe detectors were analyzed according to the time information of the signals. Interferences from Cs-137 were introduced. In this study, we extended singles measurements by exploring the potential of simultaneously using both singles and coincidence data for U/Pu assay. The main goals of this exploratory study are: 1) whether one will be able to use coincidence information in addition to the complicated 100-keV unfolding to obtain extra information of uranium and plutonium isotopic ratios, and 2) with higher energy interference gamma-rays from isotopes such as Cs-137, can the coincidence information help to provide the isotopic information. (authors)

  9. 8-group relative delayed neutron yields for monoenergetic neutron induced fission of sup 2 sup 3 sup 9 Pu

    E-Print Network [OSTI]

    Piksaikin, V M; Kazakov, L E; Korolev, G G; Roshchenko, V A; Tertychnyj, R G

    2001-01-01T23:59:59.000Z

    The energy dependence of the relative yield of delayed neutrons in an 8-group model representation was obtained for monoenergetic neutron induced fission of sup 2 sup 3 sup 9 Pu. A comparison of this data with the available experimental data by other was made in terms of the mean half-life of the delayed neutron precursors.

  10. Effect of fluoride in NTS groundwaters on the aqueous speciation of U, Np, Pu, Am and Eu

    SciTech Connect (OSTI)

    Bruton, C J; Nimz, G J

    2005-03-22T23:59:59.000Z

    To address SNJV concerns that fluoride in Nevada Test site (NTS) groundwaters may impact radionuclide speciation and transport, NTS water quality databases were obtained and scanned for analyses with high fluoride concentrations (> 10 mg/L). The aqueous speciation of nine representative samples of these groundwaters with added trace amounts of uranium (U), neptunium (Np), plutonium (Pu), americium (Am) and europium (Eu) was then calculated with the computer code EQ3NR assuming a temperature of 25 C, using currently available thermodynamic data for these species. Under conditions where U(VI), Np(V), Pu(IV), Am(III) and Eu(III) dominate, F complexes are insignificant (<1 mole %) for U, Np, Pu and Am. Eu-F complexes may be significant in groundwaters that lack bicarbonate, possess pH values less than about 7 at ambient temperatures, or contain F in extremely high concentrations (e.g. > 50 mg/L). The objective is to evaluate the extent to which fluoride in NTS groundwaters complex U(VI), Np(V), Pu(IV), Am(III) and Eu(III). The approach used is to screen existing databases of groundwater chemistry at NTS for waters with high fluoride concentrations and calculate the extent to which fluoride complexes with the nuclides of interest in these waters.

  11. Le Nigeria sous Obasanjo. Violences et dmocratie

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    #12;5 LE DOSSIER Le Nigeria sous Obasanjo. Violences et démocratie Coordonné par Laurent Fourchard Nigeria Au Nigeria, de nombreux journalistes et chercheurs ont associé la réémer- gence de conflits'au Nigeria il soit à peine plus aisé de compter les morts que de recenser les vivants2. La comparaison 1. Je

  12. DIPARTIMENTO DI LINGUE PER LE POLITICHE PUBBLICHE

    E-Print Network [OSTI]

    Guidoni, Leonardo

    25 febbraio 2010; si rende noto che il Dipartimento di Lingue per le Politiche Pubbliche intende interlinguistica e plain English COMPETENZE E REQUISITI DEL PRESTATORE DEL PRESTATORE: Diploma di Laurea di vecchio collaborazione avrà la durata di mesi 4 (quattro) e si svolgerà presso il Dipartimento di Lingue per le Politiche

  13. Dualit & PerspectiveDualit & Perspective Dualit dans le Plan Projectif

    E-Print Network [OSTI]

    Dillies, Jimmy

    Dualité & PerspectiveDualité & Perspective Dualité dans le Plan Projectif Jimmy Dillies Collège le

  14. Le profil dtaill se trouve en page 2 et suivantes UNIVERSITE DU MANS Rfrence GALAXIE : 4022

    E-Print Network [OSTI]

    Di Girolami, Cristina

    MESSIAEN 72000 - LE MANS Contact administratif : N° de téléphone : N° de Fax : Email : LE TOUX DENISE

  15. Le profil dtaill se trouve en page 2 et suivantes UNIVERSITE DU MANS Rfrence GALAXIE : 4021

    E-Print Network [OSTI]

    Di Girolami, Cristina

    OLIVIER MESSIAEN 72000 - LE MANS Contact administratif : N° de téléphone : N° de Fax : Email : LE TOUX

  16. UNIVERSITE DU MANS Rfrence GALAXIE : 4018 Numro dans le SI local : 352

    E-Print Network [OSTI]

    Di Girolami, Cristina

    MESSIAEN 72000 - LE MANS Contact administratif : N° de téléphone : N° de Fax : Email : LE TOUX DENISE

  17. Le profil dtaill se trouve en page 2 et suivantes UNIVERSITE DU MANS Rfrence GALAXIE : 4020

    E-Print Network [OSTI]

    Di Girolami, Cristina

    MESSIAEN 72000 - LE MANS Contact administratif : N° de téléphone : N° de Fax : Email : LE TOUX DENISE

  18. Burnup estimation of fuel sourcing radioactive material based on monitored Cs and Pu isotopic activity ratios in Fukushima N. P. S. accident

    SciTech Connect (OSTI)

    Yamamoto, T.; Suzuki, M.; Ando, Y. [Japan Nuclear Energy Safety Organization, Toranomon Towers Office, 14F, 4-1-28, Toranomon, Minato-ku, Tokyo 105-0001 (Japan)

    2012-07-01T23:59:59.000Z

    After the severe core damage of Fukushima Dai-Ichi Nuclear Power Station, radioactive material leaked from the reactor buildings. As part of monitoring of radioactivity in the site, measurements of radioactivity in soils at three fixed points have been performed for {sup 134}Cs and {sup 137}Cs with gamma-ray spectrometry and for Pu, Pu, and {sup 240}Pu with {alpha}-ray spectrometry. Correlations of radioactivity ratios of {sup 134}Cs to {sup 137}Cs, and {sup 238}Pu to the sum of {sup 239}Pu and {sup 240}Pu with fuel burnup were studied by using theoretical burnup calculations and measurements on isotopic inventories, and compared with the Cs and Pu radioactivity rations in the soils. The comparison indicated that the burnup of the fuel sourcing the radioactivity was from 18 to 38 GWd/t, which corresponded to that of the fuel in the highest power and, therefore, the highest decay heat in operating high-burnup fueled BWR cores. (authors)

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

    SciTech Connect (OSTI)

    Szigethy, Geza

    2009-08-12T23:59:59.000Z

    Nuclear power is an attractive alternative to hydrocarbon-based energy production at a time when moving away from carbon-producing processes is widely accepted as a significant developmental need. Hence, the radioactive actinide power sources for this industry are necessarily becoming more widespread, which is accompanied by the increased risk of exposure to both biological and environmental systems. This, in turn, requires the development of technology designed to remove such radioactive threats efficiently and selectively from contaminated material, whether that be contained nuclear waste streams or the human body. Raymond and coworkers (University of California, Berkeley) have for decades investigated the interaction of biologically-inspired, hard Lewis-base ligands with high-valent, early-actinide cations. It has been established that such ligands bind strongly to the hard Lewis-acidic early actinides, and many poly-bidentate ligands have been developed and shown to be effective chelators of actinide contaminants in vivo. Work reported herein explores the effect of ligand geometry on the linear U(IV) dioxo dication (uranyl, UO{sub 2}{sup 2+}). The goal is to utilize rational ligand design to develop ligands that exhibit shape selectivity towards linear dioxo cations and provides thermodynamically favorable binding interactions. The uranyl complexes with a series of tetradentate 3-hydroxy-pyridin-2-one (3,2-HOPO) ligands were studied in both the crystalline state as well as in solution. Despite significant geometric differences, the uranyl affinities of these ligands vary only slightly but are better than DTPA, the only FDA-approved chelation therapy for actinide contamination. The terepthalamide (TAM) moiety was combined into tris-beidentate ligands with 1,2- and 3,2-HOPO moieties were combined into hexadentate ligands whose structural preferences and solution thermodynamics were measured with the uranyl cation. In addition to achieving coordinative saturation, these ligands exhibited increased uranyl affinity compared to bis-Me-3,2-HOPO ligands. This result is due in part to their increased denticity, but is primarily the result of the presence of the TAM moiety. In an effort to explore the relatively unexplored coordination chemistry of Pu(IV) with bidentate moieties, a series of Pu(IV) complexes were also crystallized using bidentate hydroxypyridinone and hydroxypyrone ligands. The geometries of these complexes are compared to that of the analogous Ce(IV) complexes. While in some cases these showed the expected structural similarities, some ligand systems led to significant coordination changes. A series of crystal structure analyses with Ce(IV) indicated that these differences are most likely the result of crystallization condition differences and solvent inclusion effects.

  20. Stress and Diffusion in Stored Pu ZPPR Fuel from Alpha Generation

    SciTech Connect (OSTI)

    Charles W. Solbrig; Chad L. Pope; Jason P. Andrus

    2014-07-01T23:59:59.000Z

    ZPPR (Zero Power Physics Reactor) is a research reactor that has been used to investigate breeder reactor fuel designs. The reactor has been dismantled but its fuel is still stored there. Of concern are its plutonium containing metal fuel elements which are enclosed in stainless steel cladding with gas space filled with helium–argon gas and welded air tight. The fuel elements which are 5.08 cm by 0.508 cm up to 20.32 cm long (2 in × 0.2 in × 8 in) were manufactured in 1968. A few of these fuel elements have failed releasing contamination raising concern about the general state of the large number of other fuel elements. Inspection of the large number of fuel elements could lead to contamination release so analytical studies have been conducted to estimate the probability of failed fuel elements. This paper investigates the possible fuel failures due to generation of helium in the metal fuel from the decay of Pu and its possible damage to the fuel cladding from metal fuel expansion or from diffusion of helium into the fuel gas space. This paper (1) calculates the initial gas loading in a fuel element and its internal free volume after it has been brought into the atmosphere at ZPPR, (2) shows that the amount of helium generated by decay of Pu over 46 years since manufacture is significantly greater than this initial loading, (3) determines the amount of fuel swelling if the helium stays fixed in the fuel plate and estimates the amount of helium which diffuses out of the fuel plate into the fuel plenum assuming the helium does not remain fixed in the fuel plate but can diffuse to the plenum and possibly through the cladding. Since the literature is not clear as to which possibility occurs, as with Schroedinger’s cat, both possibilities are analyzed. The paper concludes that (1) if the gas generated is fixed in the fuel, then the fuel swelling it can cause would not cause any fuel failure and (2) if the helium does diffuse out of the fuel (in accordance diffusivities estimated from the literature), then it is unlikely that fuel element bulging will occur.

  1. Ce que le jour doit la nuit Vronique PERES

    E-Print Network [OSTI]

    Boyer, Edmond

    laisser distraire par la couleur (tableau de Magritte). Les contemporains de Rembrandt font triompher le

  2. Le rane delle risaie Osservazioni sugli Iperolidi del

    E-Print Network [OSTI]

    maschio. I sessi possono tuttavia di- stinguersi notevolmente per la colo- razione: le femmine hanno

  3. Vincent VLS Le service public touristique local

    E-Print Network [OSTI]

    Boyer, Edmond

    par les �ditions de l'Harmattan sous le titre « Service public touristique : L'Harmattan, collection Logiques sociales, 220 p. VLES V., 2003. Aménagement

  4. LHC, le Big Bang en éprouvette

    ScienceCinema (OSTI)

    None

    2011-10-06T23:59:59.000Z

    Notre compréhension de l?Univers est en train de changer? Bar des Sciences - Tout public Débat modéré par Marie-Odile Montchicourt, journaliste de France Info. Evenement en vidéoconférence entre le Globe de la science et de l?innovation, le bar le Baloard de Montpellier et la Maison des Métallos à Paris. Intervenants au CERN : Philippe Charpentier et Daniel Froideveaux, physiciens au CERN. Intervenants à Paris : Vincent Bontemps, philosophe et chercheur au CEA ; Jacques Arnould, philosophe, historien des sciences et théologien, Jean-Jacques Beineix, réalisateur, producteur, scénariste de cinéma. Intervenants à Montpellier (LPTA) : André Neveu, physicien théoricien et directeur de recherche au CNRS ; Gilbert Moultaka, physicien théoricien et chargé de recherche au CNRS. Partenariat : CERN, CEA, IN2P3, Université MPL2 (LPTA) Dans le cadre de la Fête de la science 2008

  5. Le Guerrou DISS. ETH NO. 16533

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Erwan Le Guerroué 2006 DISS. ETH NO. 16533 Sedimentology & Chemostratigraphy of the Ediacaran Shuram Formation, Nafun Group, Oman tel-00331341,version1-16Oct2008 #12;DISS. ETH NO. 16533 Sedimentology

  6. Evaluation of Aqueous and Powder Processing Techniques for Production of Pu-238-Fueled General Purpose Heat Sources

    SciTech Connect (OSTI)

    Not Available

    2008-06-01T23:59:59.000Z

    This report evaluates alternative processes that could be used to produce Pu-238 fueled General Purpose Heat Sources (GPHS) for radioisotope thermoelectric generators (RTG). Fabricating GPHSs with the current process has remained essentially unchanged since its development in the 1970s. Meanwhile, 30 years of technological advancements have been made in the fields of chemistry, manufacturing, ceramics, and control systems. At the Department of Energy’s request, alternate manufacturing methods were compared to current methods to determine if alternative fabrication processes could reduce the hazards, especially the production of respirable fines, while producing an equivalent GPHS product. An expert committee performed the evaluation with input from four national laboratories experienced in Pu-238 handling.

  7. Use of multivariate calibration for plutonium quantitation by the Pu(III) spectrophotometric method

    SciTech Connect (OSTI)

    Wangen, L.E.; Phillips, M.V.; Walker, L.F.

    1988-05-01T23:59:59.000Z

    Two new multivariate calibration methods for using all of the relevant spectral information are applied to the determination of plutonium. The analyte response signal originates from the absorbance spectrum of Pu(III)from 500 to 900 nm. Partial least squares (PLS) regression gives an average absolute error of 0.114 /+-/ 0.108 mg when predicting plutonium content of standards containing 65 to 90 mg total plutonium. PLS uses all of the signal in the spectrum and is a more robust calibration procedure than a method based on absorbances at five wavelengths. Another calibration procedure involving least squares curve fitting (LSCF) fits either the entire spectrum or individual spectral intervals derived from standards to spectra of unknowns. In addition, an arbitrary linear base line can be included. The best LSCF option for the same calibration and test set as used for PLS was the full spectrum (522 to 900 nm) with a linear base-line option. The average absolute error when predicting with LSCF was 0.130 /+-/ 0.092 mg plutonium. LSCF has an advantage over PLS in that the linear base line can account for certain types of interferences that have been observed for this plutonium assay procedure. An example is given. 6 refs., 3 figs., 5 tabs.

  8. Gadolinium-neutron-activation determination with a Pu-Be source

    SciTech Connect (OSTI)

    Konyaev, A.E.; Kositsyn, V.F.; Medvedev, A.B.; Rudenko, V.S.

    1988-05-01T23:59:59.000Z

    A nondestructive neutron activation method for determining gadolinium content for reactor construction materials was developed. The method uses a Pu-Be neutron source capable of giving 10/sup 8/ neutrons per second and the neutron reaction with a /sup 160/Gd target. To determine the flux attenuation, induced-activity distributions were measured along the radius with artificial compacts of Al/sub 2/O/sub 3/ + Gd/sub 2/O/sub 3/ specimens with varying gadolinium contents. The specimens were irradiated in unscreened and screened containers. The ratios of the unfiltered and filtered activities were not more than 1.06 +/- 0.04. The dependence of the gamma-ray absorption coefficient on gadolinium content and the effect of gadolinium content on the count rate due to /sup 161/Gd were determined. The nondestructive neutron-activation determination of gadolinium was possible for gadolinium concentrations where the radial induced-activity distribution was constant. The method for calculating the gamma-ray absorption coefficient was simple and reliable for measurement geometry close to 4pi. Neutron activation results agreed with chemical measurement within the error limits.

  9. Disposition of transuranic residues from plutonium isentropic compression experiment (Pu-ICE) constucted at Z machine

    SciTech Connect (OSTI)

    Goyal, Kapil K [Los Alamos National Laboratory; French, David M [Los Alamos National Laboratory; Humphrey, Betty J [WESTON SOLUTIONS INC.; Gluth, Jeffry [SNL

    2010-01-01T23:59:59.000Z

    In 1992, the U.S. Congress passed legislation to discontinue above- and below-ground testing of nuclear weapons. Because of this, the U.S. Department of Energy (DOE) must rely on laboratory experiments and computer-based calculations to verify the reliability of the nuclear stockpile. The Sandia National Laboratories/New Mexico (SNL/NM) Z machine was developed to support the science-based approach for mimicking nuclear explosions and stockpile stewardship. Plutonium (Pu) isotopes with greater than ninety-eight percent enrichment were used in the experiments. In May 2006, SNL/NM received authority that the Z Machine Isentropic Compression Experiments could commence. Los Alamos National Laboratory (LANL) provided the plutonium targets and loaded the target assemblies provided by SNL/NM. Three experiments were conducted from May through July 2006. The residues from each experiment, which weighed up to 913 pounds, were metallic and were packaged into a 55-gallon drum each. SNL/NM conducts the experiments and provides temporary storage for the drums until shipment to LANL for final waste certification for disposal at the Waste Isolation Pilot Plant (WIPP) in southeastern New Mexico. This paper presents a comprehensive approach for documenting generator knowledge for characterization of waste in cooperation with scientists at the two laboratories and addresses a variety of essential topics.

  10. Assessment of a mechanistic model in U-Pu-Zr metallic alloy fuel fission-gas behavior simulations

    SciTech Connect (OSTI)

    Yun, D.; Rest, J.; Yacout, A. M. [Argonne National Laboratory, 9700 S. Cass Ave., Argonne, IL 60439 (United States)

    2012-07-01T23:59:59.000Z

    A mechanistic kinetic rate theory model originally developed for the prediction of fission gas behavior in oxide nuclear fuels under steady-state and transient conditions has been assessed to look at its applicability to model fission gas behavior in U-Pu-Zr metallic alloy fuel. In order to capture and validate the underlying physics for irradiated U-Pu-Zr fuels, the mechanistic model was applied to the simulation of fission gas release, fission gas and fission product induced swelling, and the evolution of the gas bubble size distribution in three different fuel zones: the outer {alpha}-U, the intermediate, and the inner {gamma}-U zones. Due to its special microstructural features, the {alpha}-U zone in U-Pu-Zr fuels is believed to contribute the largest fraction of fission gas release among the different fuel zones. It is shown that with the use of small effective grain sizes, the mechanistic model can predict fission gas release that is consistent with (though slightly lower than) experimentally measured data. These simulation results are comparable to the experimentally measured fission gas release since the mechanism of fission gas transport through the densely distributed laminar porosity in the {alpha}-U zone is analogous to the mechanism of fission gas transport through the interconnected gas bubble porosity utilized in the mechanistic model. Detailed gas bubble size distributions predicted with the mechanistic model in both the intermediate zone and the high temperature {gamma}-U zone of U-Pu-Zr fuel are also compared to experimental measurements from available SEM micrographs. These comparisons show good agreements between the simulation results and experimental measurements, and therefore provide crucial guidelines for the selection of key physical parameters required for modeling these two zones. In addition, the results of parametric studies for several key parameters are presented for both the intermediate zone and the {gamma}-U zone simulations. (authors)

  11. Intrinsic Nanoscience of ? Pu-Ga Alloys: Local Structure and Speciation, Collective Behavior, Nanoscale Heterogeneity, and Aging Mechanisms

    SciTech Connect (OSTI)

    Conradson, Steven D.; Bock, Nicolas; Castro, Julio M.; Conradson, Dylan R.; Cox, Lawrence E.; Dmowski, Wojtek; Dooley, David E.; Egami, Takeshi; Espinosa-Faller, Francisco J.; Freibert, Franz J.; Garcia-Adeva, Angel J.; Hess, Nancy J.; Holmstrom, Erik; Howell, Rafael C.; Katz, Barbara A.; Lashley, Jason C.; Martinez, Raymond J.; Moore, David P.; Morales, Luis A.; Olivas, J David; Pereyra, Ramiro A.; Ramos, Michael; Terry, Jeff H.; Villella, Phillip M.

    2014-04-24T23:59:59.000Z

    Because diffraction measurements are sensitive only to the long range average arrangement of the atoms in the coherent portion of a crystal, complementary local structure measurements are required for a complete understanding of the structure of a complex material. This is particularly an issue in solid solutions where even random distributions of a solute will result in nanometer-scale fluctuations in the local composition. The structure will be further complicated if collective and cooperative phenomena organize the solute distribution via longer range interactions between non-bonded solute sites. If the solute affects the phase stability then the question is raised of whether the atoms in domains with local compositions outside the limits of the bulk phase will rearrange into the structure stable for that composition and temperature or if the resulting stress would prevent such a local phase transition. If the former, then phase separated, heterogeneous structures at or below the diffraction limit will form. This nanometerscale competition between the phase transition and the epitaxial mismatch – exacerbated by the added strain if the transition involves a volume change – raises the potential for the formation of novel structures that do not occur in bulk material, e.g., fcc Fe. This coupling over multiple scales between inhomogeneity ordering, elastic forces, phase competition, and texture in the form of coexisting structures is a hallmark of martensites, a class of complex materials that includes ?-stabilized PuGa and that often exhibit correlated atomic and electronic properties. The enigmatic and extreme nature of Pu is consistent with its exhibiting unusual structural behavior of this type, including nanoscale heterogeneity in ?-stabilized PuGa and its enhanced homogeneity on aging that has been suggested based on earlier X-ray Absorption Fine Structure (XAFS) spectroscopy and x-ray pair distribution function (pdf) measurements. Measurements on a defined set of laboratory-prepared materials now corroborate and better describe this heterogeneity while additional aged samples demonstrate the role of heterogeneity in aging processes in Pu.

  12. Modeling of Selected Ceramic Processing Parameters Employed in the Fabrication of 238PuO2 Fuel Pellets

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

    Brockman, R. A. [Univ. of Dayton, OH (United States); Kramer, Daniel P. [Univ. of Dayton, OH (United States); Barklay, Chadwick D. [Univ. of Dayton, OH (United States); Cairns-Gallimore, Dirk [U.S. Department of Energy, Germantown, MD (United States); Brown, J. L. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Huling, J. C. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); van Pelt, C. E. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2011-01-01T23:59:59.000Z

    Recent deep space missions utilize the thermal output of the radioisotope plutonium-238 as the fuel in the thermal to electrical power system. Since the application of plutonium in its elemental state has several disadvantages, the fuel employed in these deep space power systems is typically in the oxide form such as plutonium-238 dioxide (238PuO2). As an oxide, the processing of the plutonium dioxide into fuel pellets is performed via ''classical'' ceramic processing unit operations such as sieving of the powder, pressing, sintering, etc. Modeling of these unit operations can be beneficial in the understanding and control of processing parameters with the goal of further enhancing the desired characteristics of the 238PuO2 fuel pellets. A finite element model has been used to help identify the time-temperature-stress profile within a pellet during a furnace operation taking into account that 238PuO2 itself has a significant thermal output. Results of the modeling efforts will be discussed.

  13. Quantifying the importance of orbital over spin correlations in delta-Pu within density-functional theory

    SciTech Connect (OSTI)

    Soderlind, P; Wolfer, W

    2007-07-27T23:59:59.000Z

    Spin and orbital and electron correlations are known to be important when treating the high-temperature {delta} phase of plutonium within the framework of density-functional theory (DFT). One of the more successful attempts to model {delta}-Pu within this approach has included condensed-matter generalizations of Hund's three rules for atoms, i.e., spin polarization, orbital polarization, and spin-orbit coupling. Here they perform a quantitative analysis of these interactions relative rank for the bonding and electronic structure in {delta}-Pu within the DFT model. The result is somewhat surprising in that spin-orbit coupling and orbital polarization are far more important than spin polarization for a realistic description of {delta}-Pu. They show that these orbital correlations on their own, without any formation of magnetic spin moments, can account for the low atomic density of the {delta} phase with a reasonable equation-of-state. In addition, this unambiguously non-magnetic (NM) treatment produces a one-electron spectra with resonances close to the Fermi level consistent with experimental valence band photoemission spectra.

  14. Modeling of Selected Ceramic Processing Parameters Employed in the Fabrication of 238PuO2 Fuel Pellets

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

    Brockman, R. A.; Kramer, Daniel P.; Barklay, Chadwick D.; Cairns-Gallimore, Dirk; Brown, J. L.; Huling, J. C.; van Pelt, C. E.

    2011-01-01T23:59:59.000Z

    Recent deep space missions utilize the thermal output of the radioisotope plutonium-238 as the fuel in the thermal to electrical power system. Since the application of plutonium in its elemental state has several disadvantages, the fuel employed in these deep space power systems is typically in the oxide form such as plutonium-238 dioxide (238PuO2). As an oxide, the processing of the plutonium dioxide into fuel pellets is performed via ''classical'' ceramic processing unit operations such as sieving of the powder, pressing, sintering, etc. Modeling of these unit operations can be beneficial in the understanding and control of processing parameters withmore »the goal of further enhancing the desired characteristics of the 238PuO2 fuel pellets. A finite element model has been used to help identify the time-temperature-stress profile within a pellet during a furnace operation taking into account that 238PuO2 itself has a significant thermal output. Results of the modeling efforts will be discussed.« less

  15. Le cot de la sant publique : le cas des hpitaux militaires franais, XVIIe-XVIIIe sicles

    E-Print Network [OSTI]

    soldats trop âgés ou trop mutilés pour continuer le service, c'est à partir du règne de Louis XIV que s -à la fois hôpital et maison de retraite pour les « anciens soldats »-, puis d'en assurer le santé d'une armée permanente en expansion, dans des temps de guerre où la vie d'un soldat aguerri

  16. tude comparative de la digestion d'un aliment complet chez le poney et le lapin

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Étude comparative de la digestion d'un aliment complet chez le poney et le lapin R. WOLTER, F'Etoile, 69250 Charbonnières les Bains, France. Summary. Comparative digestibility ofa complete pelleted diet and rabbits. Total digestibilities, partial cumulative digestibilities in different compartments

  17. (D)crire la mine : le corps entre indicateur et ressource. Direction Rgionale des Affaires Culturelles de Franche-Comt

    E-Print Network [OSTI]

    Boyer, Edmond

    ainsi dessinées : le corps-soldat, le corps comme signe social, le corps éprouvant, le corps équipé

  18. associes dans le: Topics by E-print Network

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

    Physics Websites Summary: rsultent du temps employ charger le c ble. M. Siemens en conclut qu'il y a rellement une vitesse de'aug- menter le temps...

  19. alpha dans le: Topics by E-print Network

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    Physics Websites Summary: rsultent du temps employ charger le c ble. M. Siemens en conclut qu'il y a rellement une vitesse de'aug- menter le temps...

  20. application dans le: Topics by E-print Network

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    Physics Websites Summary: rsultent du temps employ charger le c ble. M. Siemens en conclut qu'il y a rellement une vitesse de'aug- menter le temps...

  1. ancrees dans le: Topics by E-print Network

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    Physics Websites Summary: rsultent du temps employ charger le c ble. M. Siemens en conclut qu'il y a rellement une vitesse de'aug- menter le temps...

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    Physics Websites Summary: rsultent du temps employ charger le c ble. M. Siemens en conclut qu'il y a rellement une vitesse de'aug- menter le temps...

  3. ains dans le: Topics by E-print Network

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    Physics Websites Summary: rsultent du temps employ charger le c ble. M. Siemens en conclut qu'il y a rellement une vitesse de'aug- menter le temps...

  4. ans dans le: Topics by E-print Network

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    Physics Websites Summary: rsultent du temps employ charger le c ble. M. Siemens en conclut qu'il y a rellement une vitesse de'aug- menter le temps...

  5. aerosols dans le: Topics by E-print Network

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

    Physics Websites Summary: rsultent du temps employ charger le c ble. M. Siemens en conclut qu'il y a rellement une vitesse de'aug- menter le temps...

  6. ambiant dans le: Topics by E-print Network

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    Physics Websites Summary: rsultent du temps employ charger le c ble. M. Siemens en conclut qu'il y a rellement une vitesse de'aug- menter le temps...

  7. avenir pour le: Topics by E-print Network

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

    : France (2008)" 12;1 25 Boyer, Edmond 53 N d'ordre 1137 QUEL TOURISME POUR LE MAROC Physics Websites Summary: 1 Anne 2011 N d'ordre 1137 QUEL TOURISME POUR LE...

  8. PRESSIONS ET BUDGET: UNE ETUDE QUALITATIVE DANS LE SECTEUR

    E-Print Network [OSTI]

    Boyer, Edmond

    PRESSIONS ET BUDGET: UNE ETUDE QUALITATIVE DANS LE SECTEUR HOSPITALIER Résumé Le courant Reliance secteur hospitalier public. Mots clés : pression budgétaire, manipulation de données, conflit de rôle 31 praticiens hospitaliers dans deux Centres Hospitaliers Universitaires. Ce choix est justifié par

  9. LE SECRET DE LALE SECRET DE LA LONGVIT DESLONGVIT DES

    E-Print Network [OSTI]

    St-Ong, Guillaume

    LE SECRET DE LALE SECRET DE LA LONGÉVITÉ DESLONGÉVITÉ DES PALOURDESPALOURDES MULTI 23 9 4 Le secret de la longévité des palourdes multi-centenaires 7 La microalgue Haslea ostrearia au

  10. approach le controle: Topics by E-print Network

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

    Thse soutenue Rennes le (date) devant le jury compos de : Jean-Marc MENAUD-00926228,version1-9Jan2014 12;tel-00926228,version1-9Jan2014 12;Abstract The Cloud...

  11. TRISO-Fuel Element Performance Modeling for the Hybrid LIFE Engine with Pu Fuel Blanket

    SciTech Connect (OSTI)

    DeMange, P; Marian, J; Caro, M; Caro, A

    2010-02-18T23:59:59.000Z

    A TRISO-coated fuel thermo-mechanical performance study is performed for the hybrid LIFE engine to test the viability of TRISO particles to achieve ultra-high burnup of a weapons-grade Pu blanket. Our methodology includes full elastic anisotropy, time and temperature varying material properties for all TRISO layers, and a procedure to remap the elastic solutions in order to achieve fast fluences up to 30 x 10{sup 25} n {center_dot} m{sup -2} (E > 0.18 MeV). In order to model fast fluences in the range of {approx} 7 {approx} 30 x 10{sup 25} n {center_dot} m{sup -2}, for which no data exist, careful scalings and extrapolations of the known TRISO material properties are carried out under a number of potential scenarios. A number of findings can be extracted from our study. First, failure of the internal pyrolytic carbon (PyC) layer occurs within the first two months of operation. Then, the particles behave as BISO-coated particles, with the internal pressure being withstood directly by the SiC layer. Later, after 1.6 years, the remaining PyC crumbles due to void swelling and the fuel particle becomes a single-SiC-layer particle. Unrestrained by the PyC layers, and at the temperatures and fluences in the LIFE engine, the SiC layer maintains reasonably-low tensile stresses until the end-of-life. Second, the PyC creep constant, K, has a striking influence on the fuel performance of TRISO-coated particles, whose stresses scale almost inversely proportional to K. Obtaining more reliable measurements, especially at higher fluences, is an imperative for the fidelity of our models. Finally, varying the geometry of the TRISO-coated fuel particles results in little differences in the scope of fuel performance. The mechanical integrity of 2-cm graphite pebbles that act as fuel matrix has also been studied and it is concluded that they can reliable serve the entire LIFE burnup cycle without failure.

  12. Disposition of transuranic residues from plutonium isentropic compression experiment (Pu-ice) conducted at Z machine

    SciTech Connect (OSTI)

    Goyal, Kapil K [Los Alamos National Laboratory; French, David M [Los Alamos National Laboratory; Humphrey, Betty J [WESTON SOLUTIONS INC.; Gluth, Jeffry [SNL

    2010-01-01T23:59:59.000Z

    In 1992, the U.S. Congress passed legislation to discontinue above- and below-ground testing of nuclear weapons. Because of this, the U.S. Department of Energy (DOE) must rely on laboratory experiments and computer-based calculations to verify the reliability of the nation's nuclear stockpile. The Sandia National Laboratories/New Mexico (SNL/NM) Z machine was developed by the DOE to support its science-based approach to stockpile stewardship. SNL/NM researchers also use the Z machine to test radiation effects on various materials in experiments designed to mimic nuclear explosions. Numerous components, parts, and materials have been tested. These experiments use a variety of radionuclides; however, plutonium (Pu) isotopes with greater than ninety-eight percent enrichment are the primary radionuclides used in the experiments designed for stockpile stewardship. In May 2006, SNL/NM received authority that the Z Machine Isentropic Compression Experiments could commence. Los Alamos National Laboratory (LANL) provided the plutonium targets and loaded the target assemblies, which were fabricated by SNL/NM. LANL shipped the loaded assemblies to SNL/NM for Z machine experiments. Three experiments were conducted from May through July 2006. The residues from each experiment, which weighed up to 913 pounds, were metallic and packaged into a respective 55-gallon drum each. Based on a memorandum of understanding between the two laboratories, LANL provides the plutonium samples and the respective radio-isotopic information. SNL/NM conducts the experiments and provides temporary storage for the drums until shipment to LANL for final waste certification for disposal at the Waste Isolation Pilot Plant (WIPP) in southeastern New Mexico. This paper presents a comprehensive approach for documenting generator knowledge for characterization of waste in cooperation with scientists at the two laboratories and addresses a variety of topics such as material control and accountability, safeguards of material, termination of safeguards for eventual shipment from SNL/NM to LANL, associated approvals from DOE-Carlsbad Field Office, which governs WIPP and various notifications. It portrays a comprehensive approach needed for successful completion of a complex project between two national laboratories.

  13. Interaction of Pu(IV,VI) hydroxides/oxides with metal hydroxides/oxides in alkaline media

    SciTech Connect (OSTI)

    Fedoseev, A.M.; Krot, N.N.; Budantseva, N.A.; Bessonov, A.A.; Nikonov, M.V.; Grigoriev, M.S.; Garnov, A.Y.; Perminov, V.P.; Astafurova, L.N. [Russian Academy of Sciences, Moscow (Russian Federation). Inst. of Physical Chemistry

    1998-08-01T23:59:59.000Z

    The primary goal of this investigation was to obtain data on the possibility, extent, and characteristics of interaction of Pu(IV) and (VI) with hydroxides and oxides of d-elements and other metals [Al(III), LA(III), and U(VI)] in alkaline media. Such information is important in fundamental understanding of plutonium disposition and behavior in Hanford Site radioactive tank waste sludge. These results supply essential data for determining criticality safety and in understanding transuranic waste behavior in storage, retrieval, and treatment of Hanford Site tank waste.

  14. Effect of Fe2+ Oxidation on the Removal of 238Pu from Neptunium Solution by Anion Exchange

    SciTech Connect (OSTI)

    KYSER, EDWARD

    2004-06-01T23:59:59.000Z

    The effect of ferrous sulfamate (FS) oxidation and variation in nitric acid concentration on the removal of {sup 238}Pu contamination from Np by the HB-Line anion exchange flowsheet has been tested. Significant rejection of {sup 238}Pu was observed by washing with a reductive wash solution containing 6.0 to 6.8 M nitric acid (HNO{sub 3}) with as little as 30% of the Fe{sup 2+} from the FS remaining in its reduced form. To achieve the desired 30% removal of {sup 238}Pu from the process, conditions should be controlled to maintain the Fe{sup 2+}/Fe{sup 3+} ratio in the reductive wash to be greater than 60%/40% (or 1.5). Since Fe{sup 2+} oxidation is strongly affected by temperature and nitric acid concentration, these parameters (as well as time after FS addition) need to be controlled to ensure predictable results. A shortened-height column was utilized in these tests to match changes in the plant equipment. Lab experiments scaled to plant batch sizes of 2000 g Np were observed with modest losses for ''up-flow'' washing. The following are recommended conditions for removing {sup 238}Pu from Np solutions by anion exchange in HB-Line: (1) Feed conditions: ''Up-flow'' 6.4-8.0 M HNO{sub 3}, 0.02 M hydrazine (N{sub 2}H{sub 4}), 0.05 M excess FS. (2) Reductive Wash conditions: ''Up-flow'' 6 Bed volumes (BV) of 6.4 M HNO{sub 3}, 0.05 M FS (minimum 0.03M Fe{sup 2+} during wash cycle), 0.05 M hydrazine, less than 1.8 mL/min/cm{sup 2} flowrate. (3) Decontamination Wash conditions: ''Up-flow'' 1-2 BV of 6.4-8.0 M HNO{sub 3}, no FS, no hydrazine, less than 1.8 mL/min/cm{sup 2} flowrate. (4) Elution conditions: ''Down-flow'' 0.17 M HNO{sub 3}, 0.05 M hydrazine, no FS.

  15. Louvain-la-Neuve, le 17 avril 2013 Enseignement UCL

    E-Print Network [OSTI]

    Nesterov, Yurii

    . Des groupes se forment autour d'un projet (« sauver le soldat Pacman », « comment les maths font

  16. Trence moralis : les sententiae de Trence selon le commentaire attribu Donat

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    du commentaire d'Eun. 422-429 (voir infra) : « le soldat Thrason présente un proverbe et le parasite

  17. Atmospheric deposition, resuspension, and root uptake of Pu in corn and other grain-producing agroecosystems near a nuclear fuel facility

    SciTech Connect (OSTI)

    Pinder, J.E. III; McLeod, K.W.; Adriano, D.C.; Corey, J.C.; Boni, A.L. (Savannah River Ecology Laboratory, Aiken, SC (USA))

    1990-12-01T23:59:59.000Z

    Plutonium released to the environment may contribute to dose to humans through inhalation or ingestion of contaminated foodstuffs. Plutonium contamination of agricultural plants may result from interception and retention of atmospheric deposition, resuspension of Pu-bearing soil particles to plant surfaces, and root uptake. Plutonium on vegetation surfaces may be transferred to grain surfaces during mechanical harvesting. Data obtained from corn grown near the U.S. Department of Energy's H-Area nuclear fuel chemical separations facility on the Savannah River Site were used to estimate parameters of a simple model of Pu transport in agroecosystems. The parameter estimates for corn were compared to those previously obtained for wheat and soybeans. Despite some differences in parameter estimates among crops, the relative importances of atmospheric deposition, resuspension, and root uptake were similar among crops. For even small deposition rates, the relative importances of processes for Pu contamination of corn grain should be: transfer of atmospheric deposition from vegetation surfaces to grain surfaces during combining greater than resuspension of soil to grain surfaces greater than root uptake. Approximately 3.9 X 10(-5) of a year's atmospheric deposition is transferred to grain. Approximately 6.2 X 10(-9) of the Pu inventory in the soil is resuspended to corn grain, and a further 7.3 X 10(-10) of the soil Pu inventory is absorbed and translocated to grains.

  18. Dingzeyu Li LE Schapiro (CEPSR), Columbia University

    E-Print Network [OSTI]

    Grinspun, Eitan

    Dingzeyu Li LE Schapiro (CEPSR), Columbia University West th St New York, NY , USA ( ) - dli@cs.columbia.edu http://www.cs.columbia.edu/~dli/ Education Columbia University, New York, USA Sept. - present - PhD Research, Advisor: Changxi Zheng, Columbia Computer Graphics Group, Columbia University, New York, Aug

  19. Michel Grossetti Universit de Toulouse-le-

    E-Print Network [OSTI]

    Boyer, Edmond

    1 Michel Grossetti CERS Université de Toulouse-le- Mirail, 5, Allées A. Machado, 31058 Toulouse : 05 57 57 19 72 mail : Philippe.Losego@lapsac.u- bordeaux2.fr Béatrice Milard CERS Université de and towns and the study of scientific publications. This allow us to evaluate the effects

  20. Formazione per le Aziende Catalogo CORSI

    E-Print Network [OSTI]

    De Cindio, Fiorella

    a definire nel quadro della nuova politica europea integrata energetica e climatica. Contenuti: Lo sviluppo sostenibile - I cambiamenti climatici - Le fonti e i sistemi energetici - Strumenti della politica ambientale - La politica del clima - Il protocollo di Kyoto e i meccanismi di flessibilità (IET, CDM, JI) - Il

  1. Le disque comme document 1 Karim Hammou

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    en France tome 2, L'Harmattan, 2012, pp.177-193. Le disque comme document : une analyse quantitative'action musicale, Paris, L'Harmattan, 2007, p.45 et suiv. 3 Beuscart, J.-S., « L'industrie du disque : bil

  2. LE CONTRLE EXTERNE DES ASSOCIATIONS PAR LES

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    , which can be used equally to evaluate public policies, - an external control through new rules of accountancy of the public subsidies, This article shows that the management control can influence financial to internal users like managers. Mots clés. - Secteur public, contrôle externe, association, gestion

  3. Curriculum Vit Frederic LE MOU EL

    E-Print Network [OSTI]

    Le Mouël, Frédéric

    / INRIA CITI Laboratory INSA Lyon B^atiment Claude Chappe 6 avenue des Arts F-69621 Villeurbanne Cedex Tel. : +33 472 436 422 Fax : +33 472 436 227 E-mail : frederic.le-mouel@insa-lyon.fr Web : http://citi, France. ­ Researcher in the INRIA CITI Laboratory (Innovation Center in Telecommunications and Services

  4. Le origini del mondo Giuseppe Longo

    E-Print Network [OSTI]

    Santorelli, Pietro

    Bang: T= 0 (17.000.000.000 anni fa) La storia di una lenta morte termica ? L'energia totale dell ogni grandezza fisica Q diminuisce con il volume V R età = t 1/R3 1/t3 La densità di energia #12;Le origini #12;Formazione del sistema solare storia Geologia Fisica Chimica Biologia Fisica dell

  5. Service des finances Le saviez-vous ?

    E-Print Network [OSTI]

    . La certification ISO 9001 atteste qu'une organisation a développé des pratiques de gestion qui responsable Penser autrement, acheter mieux ! L' Organisation internationale de normalisation (ISO) a publié durable dans une organisation : ISO 26 000 Responsabilité sociétale. Une organisation engagée envers le

  6. LE JOURNAL DE PHYSIQUE CENT ANS DE JOURNAL DE PHYSIQUE

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 LE JOURNAL DE PHYSIQUE CENT ANS DE JOURNAL DE PHYSIQUE J. LANGEVIN Pour marquer le centenaire du Journal de Physique nous publions ci-dessous un article de M. Jean Langevin, qui retrace l'histoire du Journal depuis sa fondation. Monsieur J. Langevin a occupé pendant de longues années le poste de Rédacteur

  7. Daniel RIVET, Le Maroc de Lyautey Mohammed V Le double visage du Protectorat,

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Daniel RIVET, Le Maroc de Lyautey à Mohammed V Le double visage du Protectorat, Paris, �ditions la publication de sa thèse monumentale (Lyautey et l'institution du Protectorat français au Maroc ambitions initales. Dans l'esprit des Annales de l'époque braudélienne, "Mon Lyautey au Maroc aurait été un

  8. Photochemical removal of NpF sub 6 and PuF sub 6 from UF sub 6 gas streams

    SciTech Connect (OSTI)

    Beitz, J.V.; Williams, C.W.

    1990-01-01T23:59:59.000Z

    A novel photochemical method of removing reactive fluorides from UF{sub 6} gas has been discovered. This method reduces generated waste to little more than the volume of the removed impurities, minimizes loss of UF{sub 6}, and can produce a recyclable by-product, fluorine gas. In our new method, impure UF{sub 6}, is exposed to ultraviolet light which dissociates the UF{sub 6} to UF{sub 5} and fluorine atom. Impurities which chemically react with UF{sub 5} are reduced and form solid compounds easily removed from the gas while UF{sub 5} is converted back to UF{sub 6}. Proof-of-concept testing involved UF{sub 6} containing NpF{sub 6} and PuF{sub 6} with CO added as a fluorine atom scavenger. In a single photolysis step, greater than 5000-fold reduction of PuF{sub 6} was demonstrated while reducing NpF{sub 6} by more than 40-fold. This process is likely to remove corrosion and fission product fluorides that are more reactive than UF{sub 6} and has been demonstrated without an added fluorine atom scavenger by periodically removing photogenerated fluorine gas. 44 refs., 3 figs., 2 tabs.

  9. Isothermal Martensitic and Pressure-Induced Delta to Alpha-Prime Phase Transformations in a Pu-Ga Alloy

    SciTech Connect (OSTI)

    Schwartz, A J; Wall, M A; Farber, D L; Moore, K T; Blobaum, K M

    2008-01-18T23:59:59.000Z

    A well-homogenized Pu-2 at.% Ga alloy can be retained in the metastable face-centered cubic {delta} phase at room temperature. Ultimately, this metastable {delta} phase will decompose via a eutectoid transformation to the thermodynamically stable monoclinic {alpha} phase and the intermetallic compound Pu{sub 3}Ga over a period of approximately 10,000 years [1]. In addition, these low solute-containing {delta}-phase Pu alloys are metastable with respect to an isothermal martensitic phase transformation to the {alpha}{prime} phase during low temperature excursions [2, 3] and are also metastable with respect to a {delta} {yields} {alpha}{prime} phase transformation with increases in pressure [3-5]. The low temperature {delta} {yields} {alpha}{prime} isothermal martensitic phase transformation in the Pu-2 at.% Ga alloy only goes to {approx}25% completion with the resultant {approx}20 {micro}m long by 2 {micro}m wide lath-shaped {alpha}{prime} particles dispersed within the {delta} matrix. In recently reported studies, Faure et al. [4] have observed a {delta} {yields} {gamma} {yields} {alpha}{prime} pressure-induced phase transformation sequence during a diamond anvil cell investigation and, based on x-ray diffraction and density and compressibility experiments, Harbur [5] has concluded that both {alpha}{prime} and an amorphous phase are present in samples that were pressurized and recovered. In this work, a large volume moissanite anvil cell is constructed to permit the pressurization and recovery of specimens of a size suitable for TEM and electron diffraction studies. The cell, shown in Fig. 1, has an overall diameter of 101.6 mm, a moissanite anvil diameter of 9.00 mm, a culet size of 3 mm, and a spring steel gasket 0.5 mm thick with a hole diameter of 2.5 mm. A 2.3 mm diameter by 100 {micro}m thick sample of {delta}-phase Pu-2 at.% Ga is compressed at a rate of approximately 0.05 GPa/minute to {approx}1 GPa to induce the phase transformation to {alpha}{prime}. Optical microscopy of the recovered specimen reveals a very fine microstructure that appears to be single phase, although the resolution of this technique is insufficient to differentiate between single and multiple phases if the grain size is below approximately 1 {micro}m. X-ray diffraction, using a laboratory Cu K{sub {alpha}} source with wavelength of 1.542{angstrom}, shows the monoclinic reflections from the {alpha}{prime} phase, strong peaks from the aluminum specimen holder, and weak peaks from the face-centered cubic {delta} phase as shown in Fig. 2. The recovered specimen is prepared for TEM and electron diffraction studies as described in Moore et al. [6]. TEM reveals small regions of {delta} phase with a very high dislocation density interspersed between the 10-100's nm {alpha}{prime} grains as shown in Fig. 3. Electron diffraction, shown in the insert in Fig. 3, clearly reveals the presence of the {delta} phase. This microstructure is in contrast to the {alpha}{prime} particles that form as a result of the low-temperature isothermal martensite in which the {alpha}{prime} particles are lath-shaped and significantly larger as shown in the optical micrograph in Fig. 4 of a sample cooled to -120 C and held for 10 hours. In these preliminary results, there is no evidence of either an amorphous phase, as suggested by Harbur [5], or the presence of a {gamma} phase. We expected to observe an amorphous phase based on the similarity of this experiment to that of Harbur [5]. It is possible that the {gamma} phase, as reported by Faure et al. [4], does form as an intermediate, but it is not retained to ambient pressure.

  10. Appels conjoint propositions et annuel dans le cadre de l'Accord-Cadre entre le CNRS FRANCE et le CNRST MAROC

    E-Print Network [OSTI]

    van Tiggelen, Bart

    CNRST MAROC L'Appel à propositions relatif au programme de « Convention d'échanges » établi entre le CNRS France et le CNRST Maroc est ouvert chaque année : du 1er juin au 15 septembre de chaque année. Ce par an (permettant de financer 1 voyage vers le Maroc et 3 semaines de séjour de partenaires marocains

  11. Analysis of Pu-Only Partitioning Strategies in LMFBR Fuel Cycles

    SciTech Connect (OSTI)

    Samuel Bays; Gilles Youinou

    2013-02-01T23:59:59.000Z

    Sodium cooled Fast Reactors (SFR) have been under consideration for production of electricity, fissile material production, and for destruction of transuranics for decades. The neutron economy of a SFR can be operated in one of two ways. One possibility is to operate the reactor in a transuranic burner mode which has been the focus of active R&D in the last 15 years. However, prior to that the focus was on breeding transuranics. This later mode of managing the neutron economy relies on ensuring the maximum fuel utilization possible in such a way as to maximize the amount of plutonium produced per unit of fission energy in the reactor core. The goal of maximizing plutonium production in this study is as fissile feed stock for the production of MOX fuel to be used in Light Water Reactors (LWR). Throughout the l970’s, this fuel cycle scenario was the focus of much research by the Atomic Energy Commission in the event that uranium supplies would be scarce. To date, there has been sufficient uranium to supply the once through nuclear fuel cycle. However, interest in a synergistic relationship Liquid Metal Fast Breeder Reactors (LMFBR) and a consumer LWR fleet persists, prompting this study. This study considered LMFBR concepts with varying additions of axial and radial reflectors. Three scenarios were considered in collaboration with a companion study on the LWR-MOX designs based on plutonium nuclide vectors produced by this study. The first scenario is a LMFBR providing fissile material to make MOX fuel where the MOX part of the fuel cycle is operated in a once-through-then-out mode. The second scenario is the same as the first but with the MOX part of the fuel cycle multi-recycling its own plutonium with LMFBR being used for the make-up feed. In these first two scenarios, plutonium partitioning from the minor actinides (MA) was assumed. Also, the plutonium management strategy of the LMFBR ensured that only the high fissile purity plutonium bred from blankets was sold to the MOX LWRs. The third scenario considered a LMFBR fuel cycle in an expansionary mode where excess bred transuranic material is accumulated for spinning off additional LMFBR cores. In this latter scenario, no plutonium partitioning was considered. After every cycle, transuranic from both driver and blankets is sold to the MOX LWRs. The MA production from LMFBR operated in a Pu-only fuel cycle is roughly only 1% that of the transuranic production rate. This is in contrast to LWR fuel cycles where the MA content in TRU is closer to 10% or more. If such a LMFBR were operated to provide fissile material to a fleet of MOX reactors, then 1 GWe of LMFBR could support between approximately 0.11 and 0.43 GWe of LWR-MOX reactors for a LMFBR conversion ratio between 1.1 and 1.5, if the MOX reactors were operated in a once-through-then out mode. If the plutonium is continuously recycled in the MOX reactors then the support ratio is approximately 1 GWe of LMFBR for between 0.13 and 0.65 GWe of LWR-MOX reactors depending on the LMFBR conversion ratio. Also, it was found that if the LMFBR fleet were operated in a purely expansionary mode, the smallest doubling time achievable would be seven years.

  12. Near-infrared photoluminescence and ligand K-edge x-ray absorption spectroscopies of AnO2Cl42-(An:u, NP, Pu)

    SciTech Connect (OSTI)

    Wilkerson, Marianne P [Los Alamos National Laboratory; Berg, John M [Los Alamos National Laboratory; Clark, David L [Los Alamos National Laboratory; Conradson, Steven D [Los Alamos National Laboratory; Hobart, David E [Los Alamos National Laboratory; Kozimor, Stosh A [Los Alamos National Laboratory; Scott, Brian L [Los Alamos National Laboratory

    2008-01-01T23:59:59.000Z

    We have used photoluminescence and X-ray absorption spectroscopies to investigate electronic structures and metal-ligand bonding of a series of An02CI/ ' (An = U, Np, Pu) compounds. Specifically, we will discuss time-resolved near-infrared emission spectra of crystalline Cs2U(An)02C14 (An = Np and Pu) both at 23 K and 75 K, as well as chlorine Kedge X-ray absorption spectra ofCs2An02CI4 (An = U, Np).

  13. Hybridization and superconducting gaps in heavy-fermion superconductor PuCoGa5 probed via the dynamics of photoinduced quasiparticles

    SciTech Connect (OSTI)

    Talbayev, Diyar [Los Alamos National Laboratory; Trugman, Stuart A [Los Alamos National Laboratory; Zhu, Jian - Xin [Los Alamos National Laboratory; Bauer, Eric D [Los Alamos National Laboratory; Kennison, John A [Los Alamos National Laboratory; Mitchell, Jeremy N [Los Alamos National Laboratory; Thompson, Joe D [Los Alamos National Laboratory; Sarrao, John L [Los Alamos National Laboratory; Taylor, Antoinette J [Los Alamos National Laboratory; Burch, Kenneth S [CANADA; Chia, Elbert E. M. [CANADA

    2009-01-01T23:59:59.000Z

    We have examined the relaxation of photoinduced quasiparticles in the heavy-fermion superconductor PuCoGa{sub 5}. The deduced electron-phonon coupling constant is incompatible with the measured superconducting transition temperature T{sub c}, which speaks against phonon-mediated superconducting pairing. Upon lowering the temperature, we observe an order-of-magnitude increase of the quasiparticle relaxation time in agreement with the phonon bottleneck scenario - evidence for the presence of a hybridization gap in the electronic density of states. The modification of photoinduced reflectance in the superconducting state is consistent with the heavy character of the quasiparticles that participate in Cooper pairing. The discovery of relatively high-temperature superconductivity in the Pu-based compounds PuCoGa{sub 5} (T{sub c} = 18.5 K) and PuRhGa{sub 5} (T{sub c} = 8.7 K) has renewed the interest in actinide materials research. The Pu-based superconductors share the HoCoGa{sub 5}-type tetragonal lattice stucture with the Ce-based series of compounds (CeRhIn{sub 5}, CeCoIn{sub 5}, and CeIrIn{sub 5}) commonly referred to as '115' materials. In the Ce-based 115 compounds, CeIrIn{sub 5} (T{sub c} = 0.4 K) and CeCoIn{sub 5} (T{sub c} = 2.3 K), display superconductivity at ambient pressure. Both Ce- and Pu-based 115 compounds display the heavy fermion behavior resulting from the influence of 4f (Ce) and 5f (Pu) electrons. The most intriguing question concerns the origin of superconductivity (SC) in the 115 materials. In the Ce series, the d-wave symmetry of the SC order parameter and the proximity of SC order to magnetism have lead to a widespread belief that the unconventional SC is induced by antiferromagnetic spin fluctuations. In the Pu compounds, two possible scenarios regarding the SC mechanism have been considered: one approach favors a magnetically mediated unconventional SC similar to that in CeCoIn{sub 5}. In the other scenario, the conventional SC is mediated by phonons, where the strength of the electron-phonon (e-ph) coupling {lambda} is the crucial parameter that sets the superconducting transition temperature T{sub c}. In this Letter, we present a measurement of the e-ph coupling constant {lambda} via the pump-probe optical study of the room-temperature relaxation time of photoinduced reflectance. We find that e-ph coupling ({lambda} = 0.2-0.26) is too weak to explain the high T{sub c} of PuCoGa{sub 5} and that phonon-mediated superconductivity is unlikely in this material. Upon lowering the temperature in the normal state (T > T{sub c}), we find an order-of-magnitude increase in the relaxation time consistent with a phonon bottleneck, similar to other heavy-fermion materials, which provides the first optical evidence of the presence of a hybridization gap in the electronic density of states (DOS). Below T{sub c}, the photoinduced response exhibits dramatic changes that we ascribe to the opening of the superconducting (SC) gap at the Fermi level. The observed dynamics confirms that the same quasiparticles detected in the normal state, i.e., the heavy quasiparticles, also participate in the SC pairing. Our study is the first to directly probe the electronic structure of PuCoGa{sub 5} in the SC state and corroborate that fact. Our results are consistent with the theoretical investigations, which find that the electronic structure is dominated by cylindrical sheets of Fermi surfaces with large 5f electron character, suggesting that the delocalized 5f electrons of Pu playa key role in the superconducting pairing.

  14. Relativistic energy density functionals: Low-energy collective states of {sup 240}Pu and {sup 166}Er

    SciTech Connect (OSTI)

    Li, Z. P. [Physics Department, Faculty of Science, University of Zagreb, 10000 Zagreb (Croatia); State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871 (China); School of Physical Science and Technology, Southwest University, Chongqing 400715 (China); Niksic, T.; Vretenar, D. [Physics Department, Faculty of Science, University of Zagreb, 10000 Zagreb (Croatia); Ring, P. [State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871 (China); Physik-Department der Technischen Universitaet Muenchen, D-85748 Garching (Germany); Meng, J. [State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871 (China); School of Physics and Nuclear Energy Engineering, Beihang University, Beijing 100191 (China)

    2010-06-15T23:59:59.000Z

    The empirical relativistic density-dependent, point-coupling energy density functional, adjusted exclusively to experimental binding energies of a large set of deformed nuclei with Aapprox =150-180 and Aapprox =230-250, is tested with spectroscopic data for {sup 166}Er and {sup 240}Pu. Starting from constrained self-consistent triaxial relativistic Hartree-Bogoliubov calculations of binding energy maps as functions of the quadrupole deformation in the beta-gamma plane, excitation spectra and E2 transition probabilities are calculated as solutions of the corresponding microscopic collective Hamiltonian in five dimensions for quadrupole vibrational and rotational degrees of freedom and compared with available data on low-energy collective states.

  15. Effects of self-irradiation on local crystal structure and 5flocalization in PuCoGa5

    SciTech Connect (OSTI)

    Booth, C.H.; Daniel, M.; Wilson, R.E.; Bauer, E.D.; Mitchell,J.N.; Moreno, N.O.; Morales, L.A.; Sarrao, J.L.; Allen, P.G.

    2006-10-20T23:59:59.000Z

    The 18.5 K superconductor PuCoGa{sub 5} has many unusual properties, including those due to damage induced by self-irradiation. The superconducting transition temperature decreases sharply with time, suggesting a radiation-induced Frenkel defect concentration much larger than predicted by current radiation damage theories. Extended x-ray absorption fine-structure measurements demonstrate that while the local crystal structure in fresh material is well ordered, aged material is disordered much more strongly than expected from simple defects, consistent with strong disorder throughout the damage cascade region. These data highlight the potential impact of local lattice distortions relative to defects on the properties of irradiated materials and underscore the need for more atomic-resolution structural comparisons between radiation damage experiments and theory.

  16. Production of new superheavy Z=108-114 nuclei with $^{238}$U, $^{244}$Pu and $^{248,250}$Cm targets

    E-Print Network [OSTI]

    Feng, Zhao-Qing; Li, Jun-Qing

    2009-01-01T23:59:59.000Z

    Within the framework of the dinuclear system (DNS) model, production cross sections of new superheavy nuclei with charged numbers Z=108-114 are analyzed systematically. Possible combinations based on the actinide nuclides $^{238}$U, $^{244}$Pu and $^{248,250}$Cm with the optimal excitation energies and evaporation channels are pointed out to synthesize new isotopes which lie between the nuclides produced in the cold fusion and the $^{48}$Ca induced fusion reactions experimentally, which are feasible to be constructed experimentally. It is found that the production cross sections of superheavy nuclei decrease drastically with the charged numbers of compound nuclei. Larger mass asymmetries of the entrance channels enhance the cross sections in 2n-5n channels.

  17. Production of new superheavy Z=108-114 nuclei with $^{238}$U, $^{244}$Pu and $^{248,250}$Cm targets

    E-Print Network [OSTI]

    Zhao-Qing Feng; Gen-Ming Jin; Jun-Qing Li

    2009-12-21T23:59:59.000Z

    Within the framework of the dinuclear system (DNS) model, production cross sections of new superheavy nuclei with charged numbers Z=108-114 are analyzed systematically. Possible combinations based on the actinide nuclides $^{238}$U, $^{244}$Pu and $^{248,250}$Cm with the optimal excitation energies and evaporation channels are pointed out to synthesize new isotopes which lie between the nuclides produced in the cold fusion and the $^{48}$Ca induced fusion reactions experimentally, which are feasible to be constructed experimentally. It is found that the production cross sections of superheavy nuclei decrease drastically with the charged numbers of compound nuclei. Larger mass asymmetries of the entrance channels enhance the cross sections in 2n-5n channels.

  18. CONTAINMENT VESSEL TEMPERATURE FOR PU-238 HEAT SOURCE CONTAINER UNDER AMBIENT, FREE CONVECTION AND LOW EMISSIVITY COOLING CONDITIONS

    SciTech Connect (OSTI)

    Gupta, N.; Smith, A.

    2011-02-14T23:59:59.000Z

    The EP-61 primary containment vessel of the 5320 shipping package has been used for storage and transportation of Pu-238 plutonium oxide heat source material. For storage, the material in its convenience canister called EP-60 is placed in the EP-61 and sealed by two threaded caps with elastomer O-ring seals. When the package is shipped, the outer cap is seal welded to the body. While stored, the EP-61s are placed in a cooling water bath. In preparation for welding, several containers are removed from storage and staged to the welding booth. The significant heat generation of the contents, and resulting rapid rise in component temperature necessitates special handling practices. The test described here was performed to determine the temperature rise with time and peak temperature attained for an EP-61 with 203 watts of internal heat generation, upon its removal from the cooling water bath.

  19. Properties measurements of (U{sub 0.7}Pu{sub 0.3})O{sub 2-x} in PO{sub 2}-controlled atmosphere

    SciTech Connect (OSTI)

    Kato, M.; Murakami, T.; Sunaoshi, T. [Advanced Nuclear System Research and Development Directorate, Japan Atomic Energy Agency, Muramatsu Tokai-mura Ibaraki, 319-1194 (Japan); Nelson, A.T.; McClellan, K.J. [Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)

    2013-07-01T23:59:59.000Z

    The investigation of physical properties of uranium and plutonium mixed oxide (MOX) fuels is important for the development of fast reactor fuels. It is well known that MOX is a nonstoichiometric oxide, and the physical properties change drastically with the Oxygen-to-Metal (O/M) ratio. A control technique for O/M ratio was established for measurements of high temperature properties of uranium and plutonium mixed oxide fuels. Sintering behavior, thermal expansion and O/M change of (U{sub 0.7}Pu{sub 0.3})O{sub 2.00} and (U{sub 0.7}Pu{sub 0.3})O{sub 1.99} were investigated in PO{sub 2}-controlled atmosphere which was controlled by H{sub 2}/H{sub 2}O gas system. Sintering behavior changed drastically with O/M ratio, and shrinkage of (U{sub 0.7}Pu{sub 0.3})O{sub 2.00} was faster and more advanced at lower temperatures as compared with (U{sub 0.7}Pu{sub 0.3})O{sub 1.99}. Thermal expansion was observed to be slightly increased with decreasing O/M ratio. (authors)

  20. LWR spent fuel reduction by the removal of U and the compact storage of Pu with FP for long-term nuclear sustainability

    SciTech Connect (OSTI)

    Fukasawa, T.; Hoshino, K. [Hitachi-GE Nuclear Energy, Ltd, 3-1-1 Saiwai, Hitachi, Ibaraki, 317-0073 (Japan); Takano, M. [Japan Atomic Energy Agency, 3-1-1 Saiwai, Hitachi, Ibaraki, 317-0073 (Japan); Sato, S. [Hokkaido University, 3-1-1 Saiwai, Hitachi, Ibaraki, 317-0073 (Japan); Shimazu, Y. [Fukui University, 3-1-1 Saiwai, Hitachi, Ibaraki, 317-0073 (Japan)

    2013-07-01T23:59:59.000Z

    Fast breeder reactors (FBR) nuclear fuel cycle is needed for long-term nuclear sustainability while preventing global warming and maximum utilizing the limited uranium (U) resources. The 'Framework for Nuclear Energy Policy' by the Japanese government on October 2005 stated that commercial FBR deployment will start around 2050 under its suitable conditions by the successive replacement of light water reactors (LWR) to FBR. Even after Fukushima Daiichi Nuclear Power Plant accident which made Japanese tendency slow down the nuclear power generation activities, Japan should have various options for energy resources including nuclear, and also consider the delay of FBR deployment and increase of LWR spent fuel (LWR-SF) storage amounts. As plutonium (Pu) for FBR deployment will be supplied from LWR-SF reprocessing and Japan will not possess surplus Pu, the authors have developed the flexible fuel cycle initiative (FFCI) for the transition from LWR to FBR. The FFCI system is based on the possibility to stored recycled materials (U, Pu)temporarily for a suitable period according to the FBR deployment rate to control the Pu demand/supply balance. This FFCI system is also effective after the Fukushima accident for the reduction of LWR-SF and future LWR-to-FBR transition. (authors)

  1. Test plan for non-radioactive testing of vertical calciner for development of direct denitration conversion of Pu-bearing liquors to stable, storage solids

    SciTech Connect (OSTI)

    Fisher, F.D.

    1995-03-30T23:59:59.000Z

    Plutonium-bearing liquors, including ANL scrap liquors, will be used for development and demonstration of a vertical calciner direct denitration process for conversion of those liquors to stable, storable PuO{sub 2}-rich solids. This test plan is to test with non-radioactive stand-in materials to demonstrate adequate performance of the vertical calciner and ancillary equipment.

  2. Interprte/orateur : pour le meilleur et pour le pire Elsa Yazbek Charabati

    E-Print Network [OSTI]

    Boyer, Edmond

    est là, là-bas : donc présent, en cabine ; et dans le noir, c'est à dire dans les coulisses. Il est là pour transmettre les paroles de l'orateur dans une autre langue. Il est là-bas, dans les coulisses dans l'oreille d'une grande célébrité, il est là ou là-bas, mais on ne le voit pas. Sans l'orateur, l

  3. Developpement WebPHP pour le Web Developpement Web

    E-Print Network [OSTI]

    Richer, Jean-Michel

    D´eveloppement WebPHP pour le Web D´eveloppement Web PHP pour le Web Jean-Michel Richer jean-michel.richer@univ-angers.fr http://www.info.univ-angers.fr/pub/richer 2008 1 / 130 #12;D´eveloppement WebPHP pour le Web Objectif´eveloppement Web fonctionnalit´es de base du langage acc`es aux bases de donn´ees (PDO) la couche objet (classe, h

  4. Myriam Catusse Les rinventions du social dans le Maroc

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Myriam Catusse Les réinventions du social dans le Maroc "ajusté" Revue des mondes musulmans et de of depoliticization. Résumé : Le Maroc de l'ajustement structurel et de la libéralisation économique est le théâtre d, publiait un article intitulé «La trajectoire du Maroc indépendant : une panne de l'ascenseur social

  5. LE SYSTEME PHONOLOGIQUE DU PUREPECHA UNE ETUDE EN SYNCHRONIE DYNAMIQUE

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    'évoluent pas dans des tours d'ivoire » dit justement Martinet3 (p. 89). Caractérisée par un plurilinguisme langue vernaculaire. Langue parlée au Mexique, au nord-ouest de l'état du Michoacan, le purepecha compte les foyers où le purepecha est parlé. Tel n'est pas le cas, au contraire en général dans ces foyers

  6. Le Costa Rica en un clin d'oeil !

    E-Print Network [OSTI]

    Montréal, Université de

    ) Maîtrise Maestria (2 ans) Doctorat Doctorado (3 à 4 ans) CR�DITS Il faut souvent regarder le nombre d'Amérique centrale, pionnier de l'écotourisme. Il possède une flore et faune exceptionnelles (6% de la biodiversité mondiale s'y trouve). Le Costa Rica est aussi «un pays neutre»:il est le premier pays à avoir consti

  7. Interdisciplinary Institute for Innovation Le risque d'accident nuclaire

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Interdisciplinary Institute for Innovation Le risque d'accident nucléaire majeur : calcul et-27Feb2013 #12;Le risque d'accident nucléaire majeur : calcul et perception des probabilités1 François Lévêque L'accident de Fukushima Daiichi s'est produit le 11 mars 2011. Cette catastrophe nucléaire

  8. MECCANICA DEI FLUIDI 0. Notazioni

    E-Print Network [OSTI]

    Bartocci, Claudio

    le due leggi della termodinamica, come si pu`o comunque verificare esplicitamente. Il bilancio della

  9. 30 ORLA-JENSEN SUR LE GOUT DU CHOU-NAVET

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    30 ORLA-JENSEN SUR LE GOUT DU CHOU-NAVET DANS' LE LAIT par le Professeur ORLA-JENSEN . Docteur phil liquéfiée. SUR LE GOUT DU CHOU-NAYET DANS LE LAIT rigoureux qu a l'ordinaire;' il -deviendra même nécessaire

  10. LE TECHNO-QUOTIDIEN PAGE 1 flash informatique

    E-Print Network [OSTI]

    la place de e-mail C un soldat ukrainien midi A le milieu du jour B l'acronyme de Musical Instrument

  11. Jacques de Vintimille Le Prince de Nicolas Machiavel

    E-Print Network [OSTI]

    Boyer, Edmond

    partie soldat », dont le coeur était « addonné aux lettres et aux armes », allait fréquenter l

  12. au japon le: Topics by E-print Network

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

    XI, Universit de 33 L'intgration des Supply chains Internationales impliques au Maroc : Le rle du contexte culturel. Physics Websites Summary: -organisationnelle occupe une...

  13. aspects pratiques le: Topics by E-print Network

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

    2013-01-01 26 Le choix de la graphie tifinaghe pour enseigner, apprendre l'amazighe au Maroc : conditions, reprsentation et pratiques. Open Access Theses and Dissertations...

  14. accelerer le progres: Topics by E-print Network

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

    Paris-Sud XI, Universit de 57 Myriam Catusse Les rinventions du social dans le Maroc Physics Websites Summary: organizations. This acceleration of social reform is based...

  15. LeAnn Oliver | Department of Energy

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122Commercial602 1,39732on ArmedManufacturingJune 17, 2015LMLandLaws &LeAnn Oliver

  16. Le processus de commissionnement vu par le maitre d'ouvrage 

    E-Print Network [OSTI]

    Moro, M.

    2004-01-01T23:59:59.000Z

    gestion au niveau national et localavec accompagnement r?glementaire, technique et financier, national ?ventuellement r?gional, et des comp?tences locales diverses. UN PATRIMOINE HETEROGENE LE PATRIMOINE 6 300000 m? dont 90% > 10 ans L?Ucanssintervient sur...

  17. Universit Toulouse 2 Le Mirail (UT2 Le Mirail) ED ALLPH@ : Allemand

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    quelles avaient été les apparitions de Hitler sur la scène politique qui avaient le plus déchaîné les l'opposition à Hitler avant 1933 à partir des seules caricatures. caricature Hitler presse satirique reconstruction through anti-Hitler caricatures in the satirical press of the Weimar Republic. They illustrate

  18. Le mythe de la gouvernance urbaine en Algrie, le cas d'Oran MOUAZIZ-BOUCHENTOUF Najet1

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    comme ce fut le cas en Europe (la ville du nord). halshs-00381584,version1-6May2009 Manuscrit auteur1 Le mythe de la gouvernance urbaine en Algérie, le cas d'Oran MOUAZIZ-BOUCHENTOUF Najet1 Aborder la gestion de la ville du sud2 sans faire référence à la gouvernance urbaine relèverait presque d

  19. La Qualit l'ENSEEIHT Le Systme de Management de la qualit (ISO 9001)

    E-Print Network [OSTI]

    Grigoras, .Romulus

    La Qualité à l'ENSEEIHT Le Système de Management de la qualité (ISO 9001) En 3 mots : le Système de Management de la qualité (ISO 9001) - Le SMQ c'est : * Réaliser = Procédures, réaliser les activités (selon

  20. CALORIMETER-BASED ADJUSTMENT OF MULTIPLICITY DETERMINED 240PU EFF KNOWN-A ANALYSIS FOR THE ASSAY OF PLUTONIUM

    SciTech Connect (OSTI)

    Dubose, F.

    2012-02-21T23:59:59.000Z

    In nuclear material processing facilities, it is often necessary to balance the competing demands of accuracy and throughput. While passive neutron multiplicity counting is the preferred method for relatively fast assays of plutonium, the presence of low-Z impurities (fluorine, beryllium, etc.) rapidly erodes the assay precision of passive neutron counting techniques, frequently resulting in unacceptably large total measurement uncertainties. Conversely, while calorimeters are immune to these impurity effects, the long count times required for high accuracy can be a hindrance to efficiency. The higher uncertainties in passive neutron measurements of impure material are driven by the resulting large (>>2) {alpha}-values, defined as the ({alpha},n):spontaneous fission neutron emission ratio. To counter impurity impacts for high-{alpha} materials, a known-{alpha} approach may be adopted. In this method, {alpha} is determined for a single item using a combination of gamma-ray and calorimetric measurements. Because calorimetry is based on heat output, rather than a statistical distribution of emitted neutrons, an {alpha}-value determined in this way is far more accurate than one determined from passive neutron counts. This fixed {alpha} value can be used in conventional multiplicity analysis for any plutonium-bearing item having the same chemical composition and isotopic distribution as the original. With the results of single calorimeter/passive neutron/gamma-ray measurement, these subsequent items can then be assayed with high precision and accuracy in a relatively short time, despite the presence of impurities. A calorimeter-based known-{alpha} multiplicity analysis technique is especially useful when requiring rapid, high accuracy, high precision measurements of multiple plutonium bearing items having a common source. The technique has therefore found numerous applications at the Savannah River Site. In each case, a plutonium (or mixed U/Pu) bearing item is divided into multiple containers. A single item from that batch is then selected for both neutron and calorimetric measurements; all remaining items undergo a neutron measurement only. Using the technique mentioned above, the 'true' {alpha} value determined from the first (calorimeter and passive neutron measured) item is used in multiplicity analysis for all other items in the batch. The justification for using this {alpha} value in subsequent calculations is the assumption that the chemical composition and isotopic distribution of all batch items are the same, giving a constant ({alpha},n):spontaneous fission ratio. This analysis method has been successfully applied to the KIS Facility, significantly improving measurement uncertainties and reducing processing times for numerous items. Comprehensive plans were later developed to extend the use of this method to other applications, including the K-Area Shuffler and the H-Area Pu-Blending Project. While only the feasibility study for the Shuffler has been completed, implementation of the method in the H-Area Pu-Blending Project is currently in progress and has been successfully applied to multiple items. This report serves to document the details of this method in order to serve as a reference for future applications. Also contained herein are specific examples of the application of known-{alpha} multiplicity analysis.

  1. LE JOURNAL DE PHYSIQUE L'COULEMENT DES MTAUX (1)

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    exemple, les pales d'une turbine à vapeur tournant à grande vitesse; si ces pales s'allongent de quelques millièmes elles risqueront de toucher le corps de l'appareil, avec un danger évident. Dans les turbines à gaz employées danse les avions les plus récents, le danger est de beaucoup augmenté à cause des

  2. octobre 2005 : le nord du Pakistan subit un violent

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Editoria octobre 2005 : le nord du Pakistan subit un violent séisme suivi de cen- taines de'une vingtaine de ces hélico- ptères indispensables pour sauver les populations civiles. Mais le Pakistan, par Turquie ou au Pakistan1 . > Dans d'autres pays, l'importance donnée aux « canons » est davantage à usage

  3. avec le test: Topics by E-print Network

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

    le test First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Le barman aveugle avec des gants de Fabien...

  4. Direction des immeubles Prparation du courrier prioritaire pour le Canada

    E-Print Network [OSTI]

    Charette, André

    Direction des immeubles Préparation du courrier prioritaire pour le Canada Comment faire? 1 requis ainsi que le code postal Pour expédier du courrier par Postes Canada · Vous pouvez utiliser une adresse civique et/ou une case postale. · Pour recevoir du courrier par Postes Canada, vous devez utiliser

  5. LE NOUVEAU MANAGEMENT PUBLIC ET LA BUREAUCRATIE PROFESSIONNELLE

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    compte, conflit Abstract : The New Public Management introduces new ways of considering public1 LE NOUVEAU MANAGEMENT PUBLIC ET LA BUREAUCRATIE PROFESSIONNELLE Florence GANGLOFF Université.gangloff@hotmail.fr Résumé : Le nouveau management public introduit de nouvelles façons de considérer les organisations

  6. Interdisciplinary Institute for Innovation Le risque d'accident nuclaire

    E-Print Network [OSTI]

    Boyer, Edmond

    . Cochran. (2011), Fukushima nuclear disaster and its implication for US nuclear power reactors. Ce chiffre Lévêque L'accident de Fukushima Daiichi s'est produit le 11 mars 2011. Cette catastrophe nucléaire irrémédiablement associée à une centrale nucléaire dont l'homme a perdu le contrôle. Fukushima Daiichi a ainsi fait

  7. LE 6 AVRIL 2004 RGIME DE RETRAITE DE

    E-Print Network [OSTI]

    Skorobogatiy, Maksim

    , par le biais d'un appel d'offres, de la société Mercer, Consultation en gestion de placement pour'École. Vers la fin des années 90, les fonds de la firme de placement américaine Lancer Management Group Mercer. Recherche d'un nouveau gestionnaire d'actions américaines. Du point de vue financier, le Comité

  8. Le silicium polycristallin Polix : laboration, proprits et performances

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    méthode est due à l'utilisation d'un encapsulant qui agit comme une barrière entre le creuset et le bain by unidirectional solidification. An encapsulant is used to prevent impurities of the crucible from diffusing into the liquid bath. The influence of thermal, physical parameters on the photovoltaic properties of solar cells

  9. TYPOLOGIE LINGUISTIQUE ET HISTOIRE DU PEUPLEMENT : LE CAS DES LANGUES GUR DU BURKINA FASO

    E-Print Network [OSTI]

    Boyer, Edmond

    1 TYPOLOGIE LINGUISTIQUE ET HISTOIRE DU PEUPLEMENT : LE CAS DES LANGUES GUR DU BURKINA FASO Alain latitude nord, et du 7° de longitude ouest au 4° de longitude est, sur l'ensemble du Burkina Faso, mais débordant largement sur tous les pays voisins, le Mali, le Niger, la Côte d'Ivoire, le Ghana, le Togo, le

  10. Nadge Ragaru lections, lgitimit politique et stabilit dans les Balkans : le lien

    E-Print Network [OSTI]

    Boyer, Edmond

    Nadège Ragaru Élections, légitimité politique et stabilité dans les Balkans : le lien manquant In. Élections, légitimité politique et stabilité dans les Balkans : le lien manquant. In: Revue d

  11. ALERTEES PAR LA MORT CELLULAIRE, NOS DEFENSES ANTIVIRALES METTENT LE TURBO

    E-Print Network [OSTI]

    Loewith, Robbie

    MORT CELLULAIRE, NOS DEFENSES ANTIVIRALES METTENT LE TURBO Genève, le 9 février 2012 SOUS EMBARGO JUSQU

  12. THSE / UNIVERSIT DE RENNES 1 sous le sceau de l'Universit Europenne de Bretagne

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Provisioning in Cloud Computing Thèse soutenue à Rennes le (date) devant le jury composé de : Jean-Marc MENAUD

  13. Une nouvelle grille d'analyse pour le contrle de gestion hospitalier : le contrle intgr de Simons

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 Une nouvelle grille d'analyse pour le contrôle de gestion hospitalier : le contrôle intégré de'Entreprise et du Management, Université de Montpellier 1, jeldds@hotmail.fr Thierry NOBRE, Professeur des Universités, Ecole de Management Strasbourg thierry.nobre@unistra.fr Résumé : Cette communication a pour but d

  14. Study of Pu consumption in light water reactors: Evaluation of GE advanced boiling water reactor plants, compilation of Phase 1C task reports

    SciTech Connect (OSTI)

    Not Available

    1994-01-15T23:59:59.000Z

    This report summarizes the evaluations conducted during Phase 1C of the Pu Disposition Study have provided further results which reinforce the conclusions reached during Phase 1A & 1B: These conclusions clearly establish the benefits of the fission option and the use of the ABWR as a reliable, proven, well-defined and cost-effective means available to disposition the weapons Pu. This project could be implemented in the near-term at a cost and on a schedule being validated by reactor plants currently under construction in Japan and by cost and schedule history and validated plans for MOX plants in Europe. Evaluations conducted during this phase have established that (1) the MOX fuel is licensable based on existing criteria for new fuel with limited lead fuel rod testing, (2) that the applicable requirements for transport, handling and repository storage can be met, and (3) that all the applicable safeguards criteria can be met.

  15. An Interpretation of Energy Dependence of Delayed Neutron Yields in the Resonance Region for {sup 235}U and {sup 239}Pu

    SciTech Connect (OSTI)

    Ohsawa, Takaaki [Kinki University (Japan); Hambsch, Franz-Josef [EC-JRC0, Institute for Reference Materials and Measurements (Belgium)

    2004-09-15T23:59:59.000Z

    Possible fluctuation in the delayed neutron yields (DNYs) in the resonance region was predicted on the basis of experimental data of mass distribution of fission fragments at resonances. Analyzed according to the multimodal random neck rupture model of fission, the small variations in the experimental mass distribution were attributed to fluctuations in the branching ratios to different modes of fission. Using the results of analysis of measured data for {sup 235}U and {sup 239}Pu, the DNYs were calculated for each resonance by the summation method, considering 271 precursors and evaluated data of delayed neutron emission probability. It was found that the DNYs should have local dips for {sup 235}U and spikes for {sup 239}Pu at resonances.

  16. Courtyard Hanover Lebanon 10 Morgan Drive

    E-Print Network [OSTI]

    Myers, Lawrence C.

    · Meeting spaces· Pool entrances· Restaurants and lounges· Self-operating lifts· Service animals allowed: HBO· Cable/satellite TV· Color TV· Wet bar· Kitchen Amenities Microwave oven· Silverware· Business

  17. Lebanon, Oregon: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I Geothermal Pwer Plant Jump to:Landowners and Wind EnergyIndiana: EnergyLands in

  18. Lebanon: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluatingGroup |Jilin Zhongdiantou NewKoreaLaor Batteries

  19. The CIELO Collaboration:Neutron Reactions on 1H, 16O, 56Fe, 235,238U, and 239Pu

    SciTech Connect (OSTI)

    Giuseppe Palmiotti; M. B. Chadwick

    2014-04-01T23:59:59.000Z

    CIELO (Collaborative International Evaluated Library Organization) provides a new working paradigm to facilitate evaluated nuclear reaction data advances. It brings together experts from across the international nuclear reaction data community to identify and document discrepancies among existing evaluated data libraries, measured data, and model calculation interpretations, and aims to make progress in reconciling these discrepancies to create more accurate ENDF-formatted files. The focus will initially be on a small number of the highest-priority isotopes, namely 1H, 16O, 56Fe, 235,238U, and 239Pu. This paper identifies discrepancies between various evaluations of the highest priority isotopes, and was commissioned by the OECD's Nuclear Energy Agency WPEC (Working Party on International Nuclear Data Evaluation Co-operation) during a meeting held in May 2012. The evaluated data for these materials in the existing nuclear data libraries — ENDF/B-VII.1, JEFF-3.1, JENDL-4.0, CENDL-3.1, ROSFOND, IRDFF 1.0 — are reviewed, discrepancies are identified, and some integral properties are given. The paper summarizes a program of nuclear science and computational work needed to create the new CIELO nuclear data evaluations.

  20. International Workshop on Gamma Spectrometry Analysis Codes for U and Pu Isotopics: Workshop Results and Next Steps

    SciTech Connect (OSTI)

    McGinnis, Brent R [ORNL; Solodov, Alexander A [ORNL; Shipwash, Jacqueline L [ORNL; Zhernosek, Alena V [ORNL; McKinney, Teressa L [ORNL; Pickett, Chris A [ORNL; Peerani, Paolo [ORNL

    2009-01-01T23:59:59.000Z

    In November 2008, the Institute of Nuclear Materials Management (INMM) and the European Safeguards Research and Development Association (ESARDA) co-hosted the International Workshop on Gamma Spectrometry Analysis Codes for U and Pu Isotopics at the Oak Ridge National Laboratory (ORNL). This workshop was conducted in response to needs expressed by the international safeguards community to understand better the capabilities and limitations of the codes; to ensure these codes are sustained; and to ensure updates or revisions are performed in a controlled manner. The workshop was attended by approximately 100 participants. The participants included code developers, code suppliers, safeguards specialists, domestic and international inspectors, process operators, regulators, and programme sponsors from various government agencies. The workshop provided a unique opportunity for code developers, commercial distributors and end users to interact in a hands-on laboratory environment to develop solutions for programmatic and technical issues associated with the various codes. The workshop also provided an international forum for discussing development of an internationally accepted standard test method. This paper discusses the organization of the workshop, its goals and objectives and feedback received from the participants. The paper also describes the significance of the working group's contribution to improving codes that are commonly used during inspections to verify that nuclear facilities are compliant with treaty obligations that ensure nuclear fuel cycle facilities are used for peaceful purposes.

  1. 8-group relative delayed neutron yields for epithermal neutron induced fission of sup 2 sup 3 sup 5 U and sup 2 sup 3 sup 9 Pu

    E-Print Network [OSTI]

    Piksaikin, V M; Kazakov, L E; Korolev, G G; Roshchenko, V A; Tertychnyj, R G

    2001-01-01T23:59:59.000Z

    An 8-group representation of relative delayed neutron yields was obtained for epithermal neutron induced fission of sup 2 sup 3 sup 5 U and sup 2 sup 3 sup 9 Pu. These data were compared with ENDF/B-VI data in terms of the average half- life of the delayed neutron precursors and on the basis of the dependence of reactivity on the asymptotic period.

  2. Single cell analyses of regulatory network perturbations using enhancer targeting TAL Effectors suggest novel roles for PU.1 during haematopoietic specification

    E-Print Network [OSTI]

    Wilkinson, Adam C.; Kawata, Viviane K. S.; Schütte, Judith; Gao, Xuefei; Antoniou, Stella; Baumann, Claudia; Woodhouse, Steven; Hannah, Rebecca; Tanaka, Yosuke; Swiers, Gemma; Moignard, Victoria; Fisher, Jasmin; Hidetoshi, Shimauchi; Tijssen, Marloes R.; de Bruijn, Marella F. T. R.; Liu, Pentao; Göttgens, Berthold

    2014-01-01T23:59:59.000Z

    and Scl+40kb are believed to mediate positive autoregulation through binding of 26 PU.1 and Scl proteins, respectively (Okuno et al., 2005; Ogilvy et al., 2007). 27 28 5 Recent technological advances in microfluidic technology have led... microfluidics-based single cell gene expression highlighted the potential for heterogeneity of 7 knockdown efficiency within single cells following siRNA-mediated gene silencing (Toriello 8 et al., 2008). However, the ability to accurately assess gene...

  3. Biotic and Abiotic Reduction and Solubilization of Pu(IV)O2•xH2O(am) as Affected by Anthraquinone-2,6-disulfonate (AQDS) and Ethylenediaminetetraacetate (EDTA)

    SciTech Connect (OSTI)

    Plymale, Andrew E.; Bailey, Vanessa L.; Fredrickson, Jim K.; Heald, Steve M.; Buck, Edgar C.; Shi, Liang; Wang, Zheming; Resch, Charles T.; Moore, Dean A.; Bolton, Harvey

    2012-01-24T23:59:59.000Z

    In the presence of hydrogen (H{sub 2}), the synthetic chelating agent ethylenediaminetetraacetate (EDTA), and the electron shuttle anthraquinone-2,6-disulfonate (AQDS), the dissimilatory metal-reducing bacteria (DMRB) Shewanella oneidensis and Geobacter sulfurreducens both reductively solubilized 100% of added 0.5 mM plutonium (IV) hydrous oxide (Pu(IV)O{sub 2} {lg_bullet} xH{sub 2}O{sub (am)}) in {approx}24 h at pH 7 in a non-complexing buffer. In the absence of AQDS, bioreduction was much slower ({approx}22 days) and less extensive ({approx}83-94%). In the absence of DMRB but under comparable conditions, 89% (without AQDS) to 98% (with AQDS) of added 0.5 mM PuO{sub 2} {lg_bullet} xH{sub 2}O{sub (am)} was reductively solubilized over 418 days. Under comparable conditions but in the absence of EDTA, <0.001% of the 0.5 mM PuO{sub 2} {lg_bullet} xH{sub 2}O{sub (am)} was solubilized, with or without bacteria. However, Pu(aq) increased by as much as an order of magnitude in some EDTA-free treatments, both biotic and abiotic, and increases in solubility were associated with the production of both Pu(OH)3(am) and Pu(III)(aq). Incubation with DMRB in the absence of EDTA increased the polymeric and crystalline content of the PuO{sub 2} {lg_bullet} xH{sub 2}O{sub (am)} and also decreased Pu solubility in 6-N HCl. Results from an in vitro assay demonstrated electron transfer to PuO{sub 2} {lg_bullet} xH{sub 2}O{sub (am)} from the S. oneidensis outer-membrane c-type cytochrome MtrC, and EDTA increased the oxidation of MtrC by PuO{sub 2} {lg_bullet} xH{sub 2}O{sub (am)}. Our results suggest that PuO{sub 2} {lg_bullet} xH{sub 2}O{sub (am)} biotic and abiotic reduction and solubilization may be important in anoxic, reducing environments, especially where complexing ligands and electron shuttling compounds are present.

  4. Heavy element radionuclides (Pu, Np, U) and {sup 137}Cs in soils collected from the Idaho National Engineering and Environmental Laboratory and other sites in Idaho, Montana, and Wyoming

    SciTech Connect (OSTI)

    Beasley, T.M.; Rivera, W. Jr. [Dept. of Energy, New York, NY (United States). Environmental Measurements Lab.; Kelley, J.M.; Bond, L.A. [Pacific Northwest National Lab., Richland, WA (United States); Liszewski, M.J. [Bureau of Reclamation (United States); Orlandini, K.A. [Argonne National Lab., IL (United States)

    1998-10-01T23:59:59.000Z

    The isotopic composition of Pu in soils on and near the Idaho National Engineering and Environmental Laboratory (INEEL) has been determined in order to apportion the sources of the Pu into those derived from stratospheric fallout, regional fallout from the Nevada Test Site (NTS), and facilities on the INEEL site. Soils collected offsite in Idaho, Montana, and Wyoming were collected to further characterize NTS fallout in the region. In addition, measurements of {sup 237}Np and {sup 137}Cs were used to further identify the source of the Pu from airborne emissions at the Idaho Chemical Processing Plant (ICPP) or fugitive releases from the Subsurface Disposal Area (SDA) in the Radioactive Waste Management Complex (RWMC). There is convincing evidence from this study that {sup 241}Am, in excess of that expected from weapons-grade Pu, constituted a part of the buried waste at the SDA that has subsequently been released to the environment. Measurements of {sup 236}U in waters from the Snake River Plain aquifer and a soil core near the ICPP suggest that this radionuclide may be a unique interrogator of airborne releases from the ICPP. Neptunium-237 and {sup 238}Pu activities in INEEL soils suggest that airborne releases of Pu from the ICPP, over its operating history, may have recently been overestimated.

  5. Le profil dtaill se trouve en page 2 et suivantes UNIVERSITE DU MANS Rfrence GALAXIE : 4028

    E-Print Network [OSTI]

    Di Girolami, Cristina

    MANS Contact administratif : N° de téléphone : N° de Fax : Email : LE TOUX DENISE RESPONS. POLE GESTION

  6. Le profil dtaill se trouve en page 2 et suivantes UNIVERSITE DU MANS Rfrence GALAXIE : 4016

    E-Print Network [OSTI]

    Di Girolami, Cristina

    MANS Contact administratif : N° de téléphone : N° de Fax : Email : LE TOUX DENISE RESPONS. POLE GESTION

  7. Le profil dtaill se trouve en page 2 et suivantes UNIVERSITE DU MANS Rfrence GALAXIE : 4025

    E-Print Network [OSTI]

    Di Girolami, Cristina

    MANS Contact administratif : N° de téléphone : N° de Fax : Email : LE TOUX DENISE RESPONS. POLE GESTION

  8. Un diagnostic vitalLe paludisme peut provoquer la mort, mais il est possible

    E-Print Network [OSTI]

    vomissements, de toux et parfois de diarrhées chez les nourrissons. Le malade est généralement très fatigué

  9. LE CONTROLE DES TEMPS ET DES DELAIS DANS LES SERVICES COMMUNAUX

    E-Print Network [OSTI]

    Boyer, Edmond

    , kaizen costing, qualité totale, zéro stocks, etc.). Le contrôle de gestion dans ses méthodes et ses

  10. L'INSTITUTIONNALISATION DE LA RESPONSABILITE SOCIALE DANS LE CONTRLE DE GESTION ET LA COMPTABILITE

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ont lancé le Global Compact, initiative destinée aux entreprises et visant à les responsabiliser. Dix

  11. Pour obtenir le grade de DOCTEUR DE L'INA-PG

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    dynamisme soient soulignés dans ces remerciements Momo le Cathare ! Je tiens également à exprimer mes

  12. Effet d'un oligoholoside de synthse, le TOS (galactose-(galactose) n-glucose),

    E-Print Network [OSTI]

    Boyer, Edmond

    Effet d'un oligoholoside de synthèse, le TOS (galactose- (galactose) n-glucose), sur le métabolisme Jouy-en-Josas cedex, France) Le TOS synthétisé au Japon (Yakult Institute) est obtenu à partir du, 1989). L'incidence du TOS sur le métabolisme bac- térien a été étudié chez des rats Fischer 344 adultes

  13. Depuis les annes 1950, le recours l'automobile pour de courts

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Depuis les années 1950, le recours à l'automobile pour de courts trajets quotidiens ne cesse de elles seules, à réduire le recours à l'automobile. La question se pose alors de cerner les conditions permettant de changer le comportement en matière de choix modal (bus ou automobile) : le station- nement ne

  14. Pour obtenir le grade de DOCTEUR DE L'UNIVERSIT DE GRENOBLE

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    intégrée. Parmi eux, notre cher Hervé ACHARD, qui a su assurer la partie filière de notre projet. Merci rencontre très prolifique où j'ai pu me faire de nombreux amis et collaborateurs tels que Jean-Pierre

  15. Evaluation of the ²³?Pu prompt fission neutron spectrum induced by neutrons of 500 keV and associated covariances

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

    Neudecker, D.; Talou, P.; Kawano, T.; Smith, D. L.; Capote, R.; Rising, M. E.; Kahler, A. C.

    2015-08-01T23:59:59.000Z

    We present evaluations of the prompt fission neutron spectrum (PFNS) of ²³?Pu induced by 500 keV neutrons, and associated covariances. In a previous evaluation by Talou et al. 2010, surprisingly low evaluated uncertainties were obtained, partly due to simplifying assumptions in the quantification of uncertainties from experiment and model. Therefore, special emphasis is placed here on a thorough uncertainty quantification of experimental data and of the Los Alamos model predicted values entering the evaluation. In addition, the Los Alamos model was extended and an evaluation technique was employed that takes into account the qualitative differences between normalized model predicted valuesmore »and experimental shape data. These improvements lead to changes in the evaluated PFNS and overall larger evaluated uncertainties than in the previous work. However, these evaluated uncertainties are still smaller than those obtained in a statistical analysis using experimental information only, due to strong model correlations. Hence, suggestions to estimate model defect uncertainties are presented, which lead to more reasonable evaluated uncertainties. The calculated keff of selected criticality benchmarks obtained with these new evaluations agree with each other within their uncertainties despite the different approaches to estimate model defect uncertainties. The keff one standard deviations overlap with some of those obtained using ENDF/B-VII.1, albeit their mean values are further away from unity. Spectral indexes for the Jezebel critical assembly calculated with the newly evaluated PFNS agree with the experimental data for selected (n,?) and (n,f) reactions, and show improvements for high-energy threshold (n,2n) reactions compared to ENDF/B-VII.1.« less

  16. abdominopelviennes fixant le: Topics by E-print Network

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

    sur l'organisation du march ? D'un point de vue marchand, le big data consiste transformer les traces big data est donc un processus de documentation. D'abord, nous...

  17. UNIVERSIT DEGLI STUDI La cooperazione internazionaLe

    E-Print Network [OSTI]

    De Cindio, Fiorella

    DELLA LUCE (Togo) AQUAPLUS - Acqua Energia per la Vita (Haiti) Lotta integrata al fitoplasma delle dei codici normalizzati OCSE per le prove dei trattori agricoli e forestali (Brasile) Biotecnologia da

  18. LE SYSTEME D'INFORMATION DE GESTION HOSPITALIER

    E-Print Network [OSTI]

    Boyer, Edmond

    LE SYSTEME D'INFORMATION DE GESTION HOSPITALIER : QUELLES CARACTERISTIQUES PRIVILEGIER POUR'hôpital public de court séjour. Abstract: Accounting Management Tools Implementation requires a Management's capabilities to make easier the Accounting Management Tools Implementation in a particular organisation

  19. stampa | chiudi LO DIMOSTRANO LE LORO CONVERSAZIONI, SPIATE DAGLI INGLESI

    E-Print Network [OSTI]

    Bartocci, Claudio

    stampa | chiudi LO DIMOSTRANO LE LORO CONVERSAZIONI, SPIATE DAGLI INGLESI Hitler senza atomica dell'uranio di Hitler, ora finalmente messo a disposizione del lettore italiano dall'editore Sironi (pp

  20. appuyer le developpement: Topics by E-print Network

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

    Ces chiffres MERCI DE COMMUNIQUER LES INFORMATIONS DEMANDEES CI-DESSOUS URL du site web de votre:www.lemensuel.net20090610dans-lamazone-du- mercure-le-developpement-cont...

  1. aux propositions Monte Verit Le Congressi Stefano Franscini, plate-

    E-Print Network [OSTI]

    Richner, Heinz

    Appel aux propositions Monte Verità Le Congressi Stefano Franscini, plate- forme de congrès de l'Ecole polytechnique fédérale de Zurich, offre la possibilité d'or- ganiser des conférences de recherche au Monte senior et junior, séjournant au Monte Verità pendant toute la durée de la conférence Le formulaire de

  2. Revue Prvenir N 40 Travail et sant , 2001 La fatigue, le stress et le travail motionnel de l'infirmire

    E-Print Network [OSTI]

    Boyer, Edmond

    évident lorsque l'on aborde lestressetlafatigue mentale. Dans l'imaginaire infirmier, l médical et non le soin infirmier; ainsi cette infirmière de pneumologie pédiatrique : «La prescription est

  3. Le pilotage des centres de recherche des ples de comptitivit Le cas du centre intgr MIRCen1

    E-Print Network [OSTI]

    Boyer, Edmond

    (Service hospitalier Frédéric Joliot), présent depuis avril 1959 à Orsay, NeuroSpin, inauguré en novembre. hal-00320879,version1-11Sep2008 Manuscrit auteur, publié dans "Vers le KM 2.0 : quel management des

  4. Des chercheurs de l'Universit de Genve (UNIGE) ont dcouvert que le tamoxifne, un mdicament utilis de longue date contre le cancer

    E-Print Network [OSTI]

    Halazonetis, Thanos

    plus résistants aux contractions répétitives et à la fatigue. Dans le coeur, par exemple, la brose tamoxifène a réduit la brose tout en augmentant l'épaisseur du muscle ainsi que le nombre de bres musculaires

  5. homologuer ces deux facteurs des mutants dj observs chez la Souris domestique. Le premier variant peut tre assimil chinchilla (cch) au locus albinos. Le second peut tre rapproch

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    variant peut être assimilé à « chinchilla» (cch) au locus albinos. Le second peut être rapproché d litigieux à des homozygotes « chinchilla ') + +cc" Coh. Le nombre minimum de descendants ayant été fixé à

  6. Radiolysis of Salts and Long-Term Storage Issues for Both Pure and Impure PuO{sub 2} Materials in Plutonium Storage Containers

    SciTech Connect (OSTI)

    Lav Tandon

    2000-05-01T23:59:59.000Z

    The Material Identification and Surveillance (MIS) project sponsored a literature search on the effects of radiation on salts, with focus on alkali chlorides. The goal of the survey was to provide a basis for estimating the magnitude of {alpha} radiation effects on alkali chlorides that can accompany plutonium oxide (PuO{sub 2}) into storage. Chloride radiolysis can yield potentially corrosive gases in plutonium storage containers that can adversely affect long-term stability. This literature search was primarily done to provide a tutorial on this topic, especially for personnel with nonradiation chemistry backgrounds.

  7. (239)Pu neutron resonance parameters revisited and covariance matrix in the neutron energy range from thermal to 2.5 keV

    SciTech Connect (OSTI)

    Derrien, Herve [ORNL; Leal, Luiz C [ORNL; Larson, Nancy M [ORNL

    2008-01-01T23:59:59.000Z

    To obtain the resonance parameters in a single energy range up to 2.5 keV neutron energy and the corresponding covariance matrix, a reevaluation of 239Pu was performed with the analysis code SAMMY. The most recent experimental data were analyzed in the energy range thermal to 2.5 keV. The experimental data were renormalized, aligned on a common energy scale, and corrected for residual background. Average neutron transmission and cross sections calculated with the new resonance parameters were compared to the corresponding experimental data and to ENDF/B-VI.

  8. 2) Certaines des substances essayes noircissent le revtement en argent de la cuve ; les cellules se dessinent alors sur ce fond, le noir-

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    que celle présumée par la formule et la pile s'échauffait, tantôt plus grande, et la pile se'énergie dégagée par la réaction chimique, alors qu'elle devrait être égale à la différence de celle-ci et de l les effets parasites (effet Peltier et Thomson) s'an- nulent et n'aura ient pu ab

  9. JAMUS: Java Accommodation of Mobile Untrusted Software Nicolas Le Sommer and Frdric Guidec

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    JAMUS: Java Accommodation of Mobile Untrusted Software Nicolas Le Sommer and Frédéric Guidec VALORIA Laboratory University of South Brittany, France {Nicolas.LeSommer|Frederic.Guidec}@univ-ubs.fr 1

  10. Service Provision in Disconnected Mobile Ad hoc Networks Nicolas Le Sommer

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Service Provision in Disconnected Mobile Ad hoc Networks Nicolas Le Sommer Valoria Laboratory, University of South Brittany Nicolas.Le-Sommer@univ-ubs.fr Abstract With the proliferation of mobiles devices

  11. Napoleon and Other Pimps in Le confessioni d'un italiano

    E-Print Network [OSTI]

    Aversa, Eric

    1994-01-01T23:59:59.000Z

    Napoleon and Other Pimps in Le confessioni d^un italiano Into when they can be shown NAPOLEON AND OTHER PIMPS IN LEficcatimi di mio padre, NAPOLEON AND OTHER PIMPS IN LE

  12. Repres rapides pour dbuter avec MsOffice 2007 Le logo identificateur de

    E-Print Network [OSTI]

    Skorobogatiy, Maksim

    Repères rapides pour débuter avec MsOffice 2007 Le logo identificateur de l'application cache des menus... Il faut cliquer sur le logo pour avoir accès aux icônes ouvrir, enregistrer, etc. #12;Les

  13. Resource Management for Parallel Adaptive Components Luc Courtrai, Frdric Guidec, Nicolas Le Sommer, Yves Maho

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Sommer, Yves Mahéo VALORIA, Université de Bretagne-Sud, France {Luc.Courtrai Frederic.Guidec Nicolas.Le-Sommer

  14. Le profil dtaill se trouve en page 2 et suivantes UNIVERSITE DU MANS Rfrence GALAXIE : 4017

    E-Print Network [OSTI]

    Di Girolami, Cristina

    administratif : N° de téléphone : N° de Fax : Email : LE TOUX DENISE RESPONS. POLE GESTION ADMINISTRATIVE/PAY 02

  15. Le profil dtaill se trouve en page 2 et suivantes UNIVERSITE DU MANS Rfrence GALAXIE : 4027

    E-Print Network [OSTI]

    Di Girolami, Cristina

    administratif : N° de téléphone : N° de Fax : Email : LE TOUX DENISE RESPONS. POLE GESTION ADMINISTRATIVE/PAY 02

  16. Thse prsente pour obtenir le grade de DOCTEUR DE L'ECOLE POLYTECHNIQUE

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    beaucoup plus souvent. François Ozanam et Marcel Filoche pour m'avoir accueilli dans le laboratoire dont

  17. L'cotourisme dans le parc national de Souss Massa -Maroc

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 L'écotourisme dans le parc national de Souss Massa - Maroc Rachid HARIF, François LAURENT et naturels, de sa faune et de sa flore remarquables, le parc national de Souss Massa, dans le sud du Maroc, ce parc national a été le premier parc au Maroc à s'ouvrir à l'écotourisme. Il représente par

  18. Introduction Le probl`eme d'ordonnancement sous contraintes d'energie

    E-Print Network [OSTI]

    Ingrand, François

    Plan Introduction Le probl`eme d'ordonnancement sous contraintes d'´energie Condition n´ecessaire d'existence : le raisonnement ´energ´etique Ensemble dominants d'intervalles et complexit´e de la CN Ordonnancement Introduction Le probl`eme d'ordonnancement sous contraintes d'´energie Condition n´ecessaire d'existence : le

  19. Etude cologique en immunofluorescence de Rhizobium japonicum dans le sol et la rhizosphre

    E-Print Network [OSTI]

    Boyer, Edmond

    'une association efficiente entre la plante hôte et la bactérie du genre Rhizobium. Lorsque le Rhizobium est absent

  20. Une petite histoire de l'ide de Explication gnalogique du cosmos par le mythe

    E-Print Network [OSTI]

    Giraud, Olivier

    gonflent et s'agitent. · D'elle et d'Ouranos naquirent le profond Océan, Coeus, Crios, Hypérion, Japet

  1. Louvain-la-Neuve, le 11 avril 2012 Enseignement UCL

    E-Print Network [OSTI]

    Nesterov, Yurii

    , appliqué par l'EPL depuis plus de dix ans. C'est d'un exemple français qu'Abdou Kouider Ben (presse) ? Abdou Kouider Ben-Naoum, professeur au pôle en ingénierie mathématique de l'UCL : 010 47 80 03

  2. Digestion des glucides chez le monogastrique Martine CHAMP

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Digestion des glucides chez le monogastrique Martine CHAMP Laboratoire de Techno%gie des Aliments des Animaux, /. N. R.A., Rue de la Géraudière, 44072 Nantes Cedex. Summary. Carbohydrate digestion digested in the small intestine of monogastric animals by enzymes of the salivary glands, pancreas

  3. Quand le charbon nettoie Utilisation de l'adsorption

    E-Print Network [OSTI]

    Liège, Université de

    Quand le charbon nettoie Utilisation de l'adsorption Cédric Gommes, Alain Brasseur, René Pirard'air des premiers sous-marins. Silo Cheminée Filtration Incinérateur Réacteur d 'adsorption Les fumées des.. Afin d 'éviter de rejeter ces molécules dans l'environnement un réacteur d'adsorption est utilisé. Les

  4. Good Architecture = Good (ADL + Practices) Vincent Le Gloahec

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Good Architecture = Good (ADL + Practices) Vincent Le Gloahec 1,3 , Regis Fleurquin 2 , and Salah of the software architecture. We treat rst the case of architecture design activity because it's the basis from the context of our indus- trial partner. Key words: Best Practices, Design, Software Architecture

  5. se de doctorat en informatique Comprendre le Web cach

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    niveau à l'aide de telles descriptions. Abstract e hidden Web (also known as deep or invisible Web'informations, complexité Keywords: hidden Web, deep Web, databases, information extraction, complexity tel-00198150,versionèse de doctorat en informatique Comprendre le Web caché Understanding the Hidden Web Pierre

  6. Activit bolomtres pour le 30m Pico Veleta

    E-Print Network [OSTI]

    Leclercq, Samuel

    Activité bolomètres pour le 30m à Pico Veleta Samuel Leclercq Journal-club IRAM 13/06/07 #12;Menu = puissance si faible que plusieurs sources apparaissent au même endroit · Bruit thermodynamique (Johnson

  7. Le Thorium Molten Salt Reactor : Au del du MSBR

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Le Thorium Molten Salt Reactor : Au delà du MSBR L. Mathieu, D. Heuer, A. Billebaud, R. Brissot, C réflexion est menée afin de trou- ver des solutions et ainsi d'aboutir au concept du Thorium Mol- ten Salt optimale du minerai d'uranium ou de thorium, une conception résistante à la prolifération, une meilleur

  8. Precise Dynamic Verification of Noninterference Gurvan Le Guernic

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Precise Dynamic Verification of Noninterference Gurvan Le Guernic INRIA-MSR - Parc Orsay Universit analysis is used to analyze some un- executed pieces of code in order to take into account all types is that nowadays it is nearly impossible for consumers to prevent the execution of "bad" code on their devices

  9. Leadership and Learning are indispensabLe to each other.

    E-Print Network [OSTI]

    Hutcheon, James M.

    Leadership and Learning are indispensabLe to each other. -John F. Kennedy Eagle Leadership Program The Eagle Leadership Program is an 11-month leadership course designed for faculty and staff and led's divisional vice presidents for their dedication, leadership skills and potential professional growth

  10. Molten salts and nuclear energy production Christian Le Bruna*

    E-Print Network [OSTI]

    Boyer, Edmond

    Molten salts and nuclear energy production Christian Le Bruna* a Laboratoire de Physique or chlorides) have been taken in consideration very soon in nuclear energy production researches, thorium cycle 1. Introduction The main characteristic of nuclear energy production is the large energy

  11. Graphene Enhanced Wireless Sensors Taoran Le, Trang Thai, Vasileios Lakafosis,

    E-Print Network [OSTI]

    Tentzeris, Manos

    Graphene Enhanced Wireless Sensors Taoran Le, Trang Thai, Vasileios Lakafosis, Manos Tentzeris utilizing both analog and digital principles. The sensors will utilize Graphene-based thin films integrated. Our thin films are produced from water-based, inkjet printed graphene oxide (GO) on paper

  12. LE CONTROLE DE GESTION EN MILIEU HOSPITALIER : UNE

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    LE CONTROLE DE GESTION EN MILIEU HOSPITALIER : UNE REPONSE A L'EMERGENCE DE RISQUES)product-based risk ; 2) procedure-based risk ; 3) individual-based risk. Management controls appears, risques organisationnels, relations interpersonnelles. Keywords : management control, organisational risks

  13. LES OUTILS DE CONTROLE DE GESTION DANS LE CONTEXTE DES

    E-Print Network [OSTI]

    Boyer, Edmond

    LES OUTILS DE CONTROLE DE GESTION DANS LE CONTEXTE DES PME : CAS DES PMI AU LIBAN Numéro d différents outils de contrôle de gestion utilisés dans les PMI libanaises et plus précisément, d gestion ­ outil de contrôle ­ calcul de coût Key words: SME - management control - cost control

  14. LE CONTROLE DE GESTION DANS LES FUSIONS-ACQUISITIONS

    E-Print Network [OSTI]

    Boyer, Edmond

    1 LE CONTROLE DE GESTION DANS LES FUSIONS-ACQUISITIONS INTERNATIONALES : UN OUTIL D'INTEGRATION ? Ludivine Chalençon Doctorante en Sciences de Gestion (titulaire d'un contrat doctoral) Centre de recherche contrôle de gestion peut constituer un pivot pouvant freiner mais également aider la réunion des entités

  15. Prsente pour obtenir le grade de L'UNIVERSIT PARISEST

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    modeling of transport and freezing phenomena within unsaturated porous media Soutenue le 23 septembre 2013. This thesis deals with the transport properties and then the freezing behaviors of unsaturated porous media Présentée par : Rongwei YANG Sujet de la thèse : Contributions à la modélisation micromécanique du transport

  16. Experimenting with Shu le Block Cipher and SMT Martin Stanek

    E-Print Network [OSTI]

    Experimenting with Shu le Block Cipher and SMT Solvers Martin Stanek Department of Computer Science, and we call it the Shu e Block Cipher. We show how the cipher can be translated into SMT-LIB v2 format, suitable for automated solving by SMT solvers. We compare performance of various SMT solvers

  17. Cartographie web : comment construire le lien entre territoire et consommateur ?

    E-Print Network [OSTI]

    Boyer, Edmond

    formes de cohabitation remarquable entre la nature et l'homme et c'est pourquoi ils ont naturellement habitants. Ils sont le refuge d'une viticulture de petite taille, garante d'une biodiversité viticole grâce à la persistance de cépages autochtones. S'ils sont attractifs et producteurs de ressources, ces

  18. Controlled cavitation in microfluidics Severine Le Gac,2

    E-Print Network [OSTI]

    Ohl, Claus-Dieter

    Controlled cavitation in microfluidics Ed Zwaan,1 S´everine Le Gac,2 Kinko Tsuji,3 and Claus-Hahn-Strasse 6-10, D-47269 Duisburg, Germany. (Dated: February 20, 2007) We report on cavitation in confined microscopic environments which are commonly called microfluidic or lab-on-a-chip systems. The cavitation

  19. Pisa Dependable Computing Ente Per le Nuove Tecnologie,

    E-Print Network [OSTI]

    Firenze, Università degli Studi di

    in questa famiglia le FMEA (Failure Mode Effect Analysis). La seconda contiene i metodi che proce- dendo sistema al livello dei componenti. I fault-tree rappresentano un tipico esempio di tali metodi. 2.1 FMEA La FMEA é una tecnica induttiva il cui principio fondamentale é l'analisi, per ogni componente, degli

  20. LeTemps.ch I Des robots pour mieux comprendre l,volution 08011217:49

    E-Print Network [OSTI]

    Alvarez, Nadir

    LeTemps.ch I Des robots pour mieux comprendre l,volution LE TEMPs 08011217:49 biologie Vendredi6 janvier 2012 Des robots pour mieux comprendre l'6volution Par L'aldatoire entrerait en jeu Le d6'y parvenir en employant comme cobayes... des robots. Etude qu,ils publient cette semaine dans une

  1. Louvain-la-Neuve, le 27 janvier 2011 Hunza ! : images du Pakistan, par Benoit Sneessens

    E-Print Network [OSTI]

    Nesterov, Yurii

    Louvain-la-Neuve, le 27 janvier 2011 « Hunza ! » : images du Pakistan, par Benoit Sneessens Du 1er trois ans, l'artiste a parcouru à pieds les sentiers escarpés de la vallée de Hunza, au Nord du Pakistan reportages à l'étranger, s'envole pour le Pakistan. Le but de son expédition : confronter l'image du pays

  2. Nicolas Forcadel, Carole Le Guyader and Christian Gout Generalized Fast Marching Method

    E-Print Network [OSTI]

    Soatto, Stefano

    Nicolas Forcadel, Carole Le Guyader and Christian Gout Generalized Fast Marching Method,4 Carole Le Guyader, 5,6,7 Christian Gout Running title: GFMM: Applications to Image Segmentation@cemrics.enpc.fr, chris gout@cal.berkeley.edu, carole.le-guyader@insa-rennes.fr Abstract. In this paper, we propose

  3. STRUCTURE DE BANDES DES CRISTAUX DE TYPE WURTZITE TRANSITIONS OPTIQUES INTRINSQUES DANS LE CdS.

    E-Print Network [OSTI]

    Boyer, Edmond

    825. STRUCTURE DE BANDES DES CRISTAUX DE TYPE WURTZITE TRANSITIONS OPTIQUES INTRINSÈQUES DANS LE Cd Brillouin pour des cristaux de type wurtzite est déduite des considérations de la théorie des groupes. Le Cd d'excitons. Un second article traite le problème de l'exciton dans les cristaux de type wurtzite

  4. FABRICATION ET TUDE D'UN MONOCRISTAL DE VORTEX DANS LE NIOBIUM SUPRACONDUCTEUR

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    447 FABRICATION ET ÉTUDE D'UN MONOCRISTAL DE VORTEX DANS LE NIOBIUM SUPRACONDUCTEUR P. THOREL. 2014 Nous étudions expérimentalement par diffraction de neutrons le réseau de vortex dans le niobium ce V-cristal est liée à celle des axes cristallins du niobium, étant donné la forte anisotropie des

  5. LE CADRE DE SANTE ENTRE LOGIQUES D'UTILITE ET LOGIQUES DE SOINS HOSPITALIERS

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    valorisation des cadres hospitaliers avec pour objectif: « Le renforcement du management hospitalier » La1 LE CADRE DE SANTE ENTRE LOGIQUES D'UTILITE ET LOGIQUES DE SOINS HOSPITALIERS Résumé : Le cadre de santé hospitalier réalise, au niveau d'un service, l'ensemble des missions d'organisation de l

  6. Du budget administratif au budget outil de gestion. Le cas des muses franais*

    E-Print Network [OSTI]

    Boyer, Edmond

    1 Du budget administratif au budget outil de gestion. Le cas des musées français* Stéphanie : Stephanie.Chatelain@u-picardie.fr Résumé : Le musée moderne accède au statut d'institution dont la gestion contraintes, trouve sa place dans le contrôle de gestion. Pour prendre en compte la nouvelle problématique

  7. Sur le rapport isoperimetrique du tetra`edre par Jean-Pierre Demailly

    E-Print Network [OSTI]

    Demailly, Jean-Pierre

    Sur le rapport isop´erim´etrique du t´etra`edre par Jean-Pierre Demailly Professeur `a l triangle ABC, comment choisir le quatri`eme sommet D de fa¸con que le rapport isop´erim´etrique du t´etra`edre´egalit´es contradictoires 0 = - µ + edre

  8. LE BULLETIN DE L'EPI N 38 DMARRER EN LOGO DMARRER EN LOGO

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    81 LE BULLETIN DE L'EPI N° 38 DÉMARRER EN LOGO DÉMARRER EN LOGO Philippe BRIZEMUR Il parait évident que LOGO est le langage le mieux adapté à l'apprentissage de la programmation par les enfants. Sans les promoteurs ne me paraissent pas aussi évidentes, LOGO possède des avantages déterminants par

  9. Solo la crescita pu salvare un'Italia logorata e proteggere l'Euro Ulrike Sauer, Sddeutsche Zeitung 3/2/2011

    E-Print Network [OSTI]

    Angeleri Hügel, Lidia

    la torre di Pisa che pende e che pende ma non cade mai" dice la caricatura sul capo di governo invece il governo non si occupa delle condizioni in cui si trovano ad operare le imprese. Né la'Italia che la sera va a letto presto". Questo paese dimenticato sta aspettando da anni un nuovo governo che

  10. Supporting evidence for double-C curve kinetics in the isothermal (delta) --> (alpha)' phase transformation in a Pu-Ga alloy

    SciTech Connect (OSTI)

    Oudot, B; Blobaum, K M; Wall, M A; Schwartz, A J

    2006-07-21T23:59:59.000Z

    Time-temperature-transformation (TTT) diagrams for the {delta} {yields} {alpha}{prime} transformation in a number of Pu-Ga alloys were first reported in 1975 by Orme et al. Unlike typical single-C curve kinetics observed in most isothermal martensitic transformations, the Pu-1.9 at.% Ga alloy exhibits two noses, and thus double-C curve kinetics. The authors attributed the occurrence of the double C to a difference in mechanism: a massive transformation for the upper C and a martensitic transformation for the lower C. Since that time, the nature, and the existence of the double C have received only limited attention. The results of Deloffre et al. suggest a confirmation of this behavior, but the fundamental origin of the double C remains unknown. Here, we apply differential scanning calorimetry (DSC) as an alternative approach to acquiring the TTT data and our experimental evidence suggests a confirmation of the double-C behavior after 18 hours of isothermal hold time. In addition, we report three exothermic peaks corresponding to transformations during cooling at 20 C/min prior to the isothermal holds. These three peaks are reproducible and suggest a number of possibilities for the origin of the unique kinetics: {alpha}{prime} forms with different morphologies, or from different embryos in the upper and lower C curves; {alpha}{prime} forms directly in one C curve and forms via an intermediate phase in the other C curve; the two C curves result from {alpha}{prime} forming by two or more distinct mechanisms (e.g., massive and martensitic transformations).

  11. Le droit constitutionnel de la famille Eric Millard

    E-Print Network [OSTI]

    Boyer, Edmond

    législatives (principalement regroupées dans le Code civil) est désormais devenu objet de normes pas sous cet angle que j'aborderai la question, et cela pour deux raisons. D'abord parce qu'en matière liberté individuelle, et l'on conviendra que c'est peu. Surtout, parce que ce débat doit être abordé

  12. Le son musical 2007 I Phonie et sonie

    E-Print Network [OSTI]

    Mazliak, Laurent

    Le son musical 2007 I Phonie et sonie 1 Formulaire Célérité du son c dans un gaz de masse molaire vaut 40 phones. En pratique, pour estimer la sonie d'un son complexe, on somme les intensités par. Quelles sont leurs sonies respectives lors- qu'elles sont jouées séparément ? Et ensemble ? Même question

  13. CORROSION INTERGRANULAIRE SUR LE MCANISME DE LA CORROSION INTERGRANULAIRE

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    CORROSION INTERGRANULAIRE SUR LE M�CANISME DE LA CORROSION INTERGRANULAIRE DES MAT�RIAUX'article est consacré à l'étude des phénomènes de corrosion intergranulaire présentés par les métaux et corrosion intergranulaire correspond à une dissolution préférentielle des zones d'émergence des joints de

  14. De Gaulle en Iran (octobre 1963): Le voyage oubli.

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    De Gaulle en Iran (octobre 1963): Le voyage oublié. Dernière version avant publication dans la nouveau "normales" entre les démocraties occidentales et l'Iran. L'accession au pouvoir du modéré Khatami'esquisser en Iran. Une longue parenthèse serait ainsi appelée à se résorber, permettant de relancer

  15. Pour obtenir le grade de DOCTEUR DE L'UNIVERSIT DE GRENOBLE

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    » Thèse dirigée par « Pierre FORAY » et codirigée par « Jean-Luc ACHARD» préparée au sein du Laboratoire 3 direction de Pierre Foray et Jean-Luc Achard. Je tiens à leur exprimer toute ma reconnaissance pour m composé de : M., Jean-Luc, ACHARD D.R. à Grenoble, Membre du jury M., Zitouni, AZARI P.U. à Metz

  16. Analyse de la scurit de transactions puce avec le framework WinSCard Tools

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    implique de nombreux standards. Dans cet article, nous présentons une API ouverte et orientée objet pour l programmation (Application Programming Interface, API) permettant d'accéder aux ressources du lecteur et à la'une application embarquée sur une carte à puce. Pour ce besoin, nous aurions pu utiliser une API propriétaire

  17. Monte Carlo calculations of the anisotropic engineering moduli for crystalline RDX (0 GPa {le} p {le} 4 GPa)

    SciTech Connect (OSTI)

    Bennett, C.M. [Los Alamos National Lab., NM (United States). Theoretical Div.]|[Oklahoma State Univ., Stillwater, OK (United States). Dept. of Chemistry; Sewell, T.D. [Los Alamos National Lab., NM (United States). Theoretical Div.

    1998-12-31T23:59:59.000Z

    Isothermal-iosbaric Monte Carlo calculations are used in conjunction with an expression that relates the elastic stiffness tensor to the mean-square fluctuations of the strain tensor to obtain first principles predictions of the Young`s moduli, shear moduli, and Poisson`s ratios for room-temperature crystalline RDX. The results are based on numerical data obtained during previously reported calculations of the hydrostatic compression of RDX over the pressure domain 0 GPa {le} p {le} 4 GPa. Although there are no experimental data available for comparison, the predicted values of the engineering coefficients are in accord with general expectations for brittle molecular crystals. The calculations reported here are preliminary: more extensive Monte Carlo realizations are needed to yield well-converged predictions; these are underway for RDX and {beta}-HMX.

  18. OFFRE D'EMPLOI Le Conservatoire botanique national du Massif central est un tablissement public, agr par le Ministre

    E-Print Network [OSTI]

    -Loire, du Parc naturel régional Livradois-Forez, du Syndicat mixte d'aménagement territorial du Haut botanique national définies par l'article L414-10 du code de l'environnement comme suit : Contribuer, dans code de l'environnement dans la mesure compatible avec le respect des habitats et des espèces et

  19. MODIFICATION DE L'ABSORPTION CHEZ LE PORC IRRADI J. REMY,F. DABURON P. NIZZA

    E-Print Network [OSTI]

    Boyer, Edmond

    'absorption ; celle-ci est réduite à m p. 100 pour le sodium, à 3 et q p. 100 pour le glucose et le calcium. L in 1 500 rad irradiated pigs down to about m p. 100 for sodium, 3 p. 100 for glucose and 4 p. 100'absorption du sodium, du glucose, et du calcium a été étudiée chez des porcs irradiés aux rayons du cobalt à i

  20. Le retour de Fourier Jean-Pierre Kahane, Membre de l'Acadmie des sciences

    E-Print Network [OSTI]

    Yger, Alain

    1 Le retour de Fourier Jean-Pierre Kahane, Membre de l'Académie des sciences On peut s'étonner de ce titre : "le retour de Fourier". Le nom de Fourier n'est-il pas, depuis longtemps, l'un des plus familiers au public scientifique ? Séries de Fourier, intégrales de Fourier, transformations de Fourier sont

  1. LES TYROSINASES CUTANES CHEZ LE RAT. MODIFICATIONS AU COURS DU DVELOPPEMENT

    E-Print Network [OSTI]

    Boyer, Edmond

    LES TYROSINASES CUTAN�ES CHEZ LE RAT. MODIFICATIONS AU COURS DU D�VELOPPEMENT ET PENDANT LE CYCLE Sciences appliquées, 69621 Villeurbanne 1 1 R�SUM� Nous avons effectué l'étude des tyrosinases de la peau chez le Rat. Ces tyrosinases sont mises en évidence, après électrophorèse par réaction de Dopa sur gel

  2. LE CASSE-TTE DE L'ETAT CHINOIS : ENCOURAGER LA CONSOMMATION AUTOMOBILE EN DECOURAGEANT LA

    E-Print Network [OSTI]

    Boyer, Edmond

    LE CASSE-T�TE DE L'ETAT CHINOIS : ENCOURAGER LA CONSOMMATION AUTOMOBILE EN DECOURAGEANT LA CONSOMMATION D'ENERGIE Julien ALLAIRE1 Revue de l'énergie n°564 Février 2005 Résumé: Le marché automobile article nous revenons sur les dynamiques du marché automobile chinois depuis le nouveau millénaire. Nous

  3. UNIVERSITE DU MANS Rfrence GALAXIE : 4026 Numro dans le SI local : 0015

    E-Print Network [OSTI]

    Di Girolami, Cristina

    téléphone : N° de Fax : Email : LE TOUX DENISE RESPONS. POLE GESTION ADMINISTRATIVE/PAY 02-43-83-30-23 ou 30

  4. UNIVERSITE DU MANS Rfrence GALAXIE : 4019 Numro dans le SI local : 494

    E-Print Network [OSTI]

    Di Girolami, Cristina

    téléphone : N° de Fax : Email : LE TOUX DENISE RESPONS. POLE GESTION ADMINISTRATIVE/PAY 02-43-83-30-23 ou 30

  5. Prsente pour obtenir le grade de DOCTEUR DE L'COLE POLYTECHNIQUE

    E-Print Network [OSTI]

    écoutait du Lady Gaga). Le labo 2, dans lequel j'ai passé pas mal de temps. S'y sont succédés Aurélien (et

  6. Battaglie navali, scorrerie corsare e politica dello spettacolo: Le Naumachie medicee del 1589

    E-Print Network [OSTI]

    Alberti, Maria

    2010-01-01T23:59:59.000Z

    di Toscana sotto il governo della casa Medici. Firenze:e assunte le redini del governo, come il nuovo campioneinternazionale del suo governo, il 30 gennaio 1562 aveva

  7. Pour obtenir le grade de DOCTEUR DE L'UNIVERSIT DE GRENOBLE

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ........................................................................................................................ 17 1.2 Le modèle e-NRTL ........................................................................................................... 20 1.2.2 Description du modèle e-NRTL-Debye-Hückel.............................................................................................. 21 Terme NRTL

  8. Pour obtenir le grade de DOCTEUR DE L'UNIVERSIT DE GRENOBLE

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    '�cole Doctorale I-MEP2 Hot workability of duplex stainless steels Thèse soutenue publiquement le 4 novembre 2011

  9. REMARQUES SUR LE MCANISME DE LA PHOSPHORESCENCE DANS LES CRISTAUX Par DANIEL CURIE.

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    retomber dans un centre luminog6ne vido .quel- conque. Le nombre 1) d'61ectrous, excit6s 6tant 6gal à celui

  10. % EXERCICE 1 -Quelques rappels sur les matrices % rentrer un scalaire et le nommer

    E-Print Network [OSTI]

    Delacourt, Christophe

    sismo3B.txt % appeler N la longueur de ce vecteur % Tracer le vecteur sismo3b % Attention: si aucune

  11. Mounet C., 2006, Les enseignements d'une exprience locale de gestion d'une espce protge : le cas du loup dans le Vercors , Natures Sciences Socits, vol 14, pp. 65-66

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    'une expérience locale de gestion d'une espèce protégée : le cas du loup dans le Vercors Coralie Mounet Une gestion dans les espaces de la « nature ordinaire ». Tel est le cas dans le Parc naturel régional du gestion d'une espèce protégée : le cas du loup dans le Vercors », Natures Sciences Sociétés, vol 14, pp

  12. Tracey A. LeBeau | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over OurThe Iron Spin Transition in2, 2003Tool ofTopo II:7.1 7.0CoupledTracey A. LeBeau

  13. Thermal conductivity of Na/sub 3/(U/sub 1-y/Pu/sub y/)O/sub 4/: A preliminary in-pile determination

    SciTech Connect (OSTI)

    Lee, M.J.; Lambert, J.D.B.; Ukai, S.; Odo, T.

    1987-01-01T23:59:59.000Z

    During Run-Beyond-Cladding-Breach (RBCB) operation in an oxide LMR, the performance of a breached fuel element is intimately associated with the formation of fuel-sodium reaction product (FSRP), Na/sub 3/(U/sub 1-y/Pu/sub y/)O/sub 4/. In-pile experiments coupled with destructive examinations of breached fuel have consistently revealed noticeable changes in fuel structure accompanying FSRP formation at the fuel surface. Previous analyses have also indicated a significant impact of FSRP on fuel centerline temperature. Successful modeling of breached fuel thermal behavior therefore requires a reasonably accurate knowledge of the thermal properties of the FSRP, especially its thermal conductivity. But laboratory investigations have been scarce and limited to the Na/UO/sub 2/ system because of the toxicity of plutonium and hygroscopicity of the FSRP. Hence, post-irradiation observations of fuel samples remain the most amenable way of deriving the thermal conductivity of the FSRP. Such work is a spin-off of the RBCB program in the Experimental Breeder Reactor-II (EBR-II), a program jointly sponsored by the US Department of Energy and the Power Reactor and Nuclear Fuel Development Corporation of Japan.

  14. Thermal conductivity of Na/sub 3/(U/sub 1-y/Pu/sub y/O/sub 4/: a preliminary in-pile determination

    SciTech Connect (OSTI)

    Lee, M.J.; Lambert, J.D.B.; Ukai, S.; Odo, T.

    1987-01-01T23:59:59.000Z

    During run-beyond-cladding-breach (RBCB) operation in an oxide liquid metal breeder, the performance of a breached fuel element is intimately associated with the formation of fuel/sodium reaction product (FSRP), Na/sub 3/(U/sub 1-y/Pu/sub y/)O/sub 4/. In-pile experiments coupled with destructive examinations of breached fuel have consistently revealed noticeable changes in fuel structure accompanying FSRP formation at the fuel surface. Previous analyses have also indicated a significant impact of FSRP on fuel centerline temperature. Successful modeling of breached fuel thermal behavior therefore requires a reasonably accurate knowledge of the thermal properties of the FSRP, especially its thermal conductivity. But laboratory investigations have been scarce and limited to the Na/UO/sub 2/ system because of the toxicity of plutonium and hygroscopicity of the FSRP. Hence, postirradiation observations of fuel samples remain the most amenable way of deriving the thermal conductivity of the FSRP. Such work is a spin-off of the RBCB program in the Experimental Breeder Reactor-II (EBR-II), a program jointly sponsored by the US Dept. of Energy and the Power Reactor and Nuclear Fuel Development Corporation of Japan.

  15. Microdistribution and Long-Term Retention of 239Pu (NO3)4 in the Respiratory Tracts of an Acutely Exposed Plutonium Worker and Experimental Beagle Dogs

    SciTech Connect (OSTI)

    Nielsen, Christopher E.; Wilson, Dulaney A.; Brooks, Antone L.; McCord, Stacey; Dagle, Gerald E.; James, Anthony C.; Tolmachev, Sergei Y.; Thrall, Brian D.; Morgan, William F.

    2012-11-01T23:59:59.000Z

    The long-term retention of inhaled soluble forms of plutonium raises concerns as to the potential health effects in persons working in nuclear energy or the nuclear weapons program. The distributions of long-term retained inhaled plutonium-nitrate [239Pu (NO3)4] deposited in the lungs of an accidentally exposed nuclear worker (Human Case 0269) and in the lungs of experimentally exposed beagle dogs with varying initial lung depositions were determined via autoradiographs of selected histological lung, lymph node, trachea, and nasal turbinate tissue sections. These studies showed that both the human and dogs had a non-uniform distribution of plutonium throughout the lung tissue. Fibrotic scar tissue effectively encapsulated a portion of the plutonium and prevented its clearance from the body or translocation to other tissues and diminished dose to organ parenchyma. Alpha radiation activity from deposited plutonium in Human Case 0269 was observed primarily along the sub-pleural regions while no alpha activity was seen in the tracheobronchial lymph nodes of this individual. However, relatively high activity levels in the tracheobronchial lymph nodes of the beagles indicated the lymphatic system was effective in clearing deposited plutonium from the lung tissues. In both the human case and beagle dogs, the appearance of retained plutonium within the respiratory tract was inconsistent with current biokinetic models of clearance for soluble forms of plutonium. Bound plutonium can have a marked effect on the dose to the lungs and subsequent radiation exposure has the potential increase in cancer risk.

  16. Pour obtenir le grade de DOCTEUR DE L'UNIVERSIT DE GRENOBLE

    E-Print Network [OSTI]

    Boyer, Edmond

    -ion batteries 6 I.1.1 Lithium-ion batteries 8 I.2 Cellulose and cellulose derivatives in Li-ion batteries 13 I.2 Environnement Energétique Procédés Production (I-MEP²) Elaboration of Li-ion batteries using cellulose fibers batteries Li-ion Thèse soutenue publiquement le 29 Octobre 2012, devant le jury composé de : Mme. Nadia EL

  17. LE BULLETIN DE L'EPI N 43 LOGICIELS DIDACT, HORIZON, ROSEAU PROPOS DES LOGICIELS

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    141 LE BULLETIN DE L'EPI N° 43 LOGICIELS DIDACT, HORIZON, ROSEAU � PROPOS DES LOGICIELS DIDACT supprimer sur une disquette en unité FL0 les fichiers utilisateurs créés par Didact, Horizon ou Roseau CP BULLETIN DE L'EPI LOGICIELS DIDACT, HORIZON, ROSEAU d) le travail se fait. Noter que pour une deuxième

  18. Universit des Sciences et Technologies de Lille -Lille 1 Pour obtenir le titre de

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Thèse soutenue publiquement le 17 octobre 2011 devant le jury composé de: Christian GOUT Professeur à l and the share of their research experience. I would like to express my sincere gratitude to Prof. Christian Gout

  19. 7e Anne (l'orne VII).' Dcembre ,1927 LE. 'LAll-'-

    E-Print Network [OSTI]

    Boyer, Edmond

    'RE Mémoires originaux: W. CLAyTON. - Emploi et' effets du sel dans le beurre et la mar- garine calcium dans le selle rend sujet à devenir humide, et, par conséquent, en séchant; de se, coller en

  20. LE JOURNAL DE PHYSIQUE CONTRIBUTION A L'TUDE DE LA MSOMRIE DES HYDROCARBURES POLYCYCLIQUES

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    LE JOURNAL DE PHYSIQUE - ET LE RADIUM CONTRIBUTION A L'ÉTUDE DE LA MÉSOMÉRIE DES HYDROCARBURES résultat. Nous avons déterminé, pour des hydrocarbures aromatiques polynucléaires dont certains présentent problème. Les propriétés chimiques des hydrocarbures aro- matiques ne peuvent s'expliquer qu'en admettant

  1. Animation de mod`eles UML -Application dans le contexte des Smartgrids

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    Paris-Sud XI, Université de

    Animation de mod`eles UML - Application dans le contexte des Smartgrids Rachida Seghiri T'arriv´ee des Smartgrids dans le domaine ´electrique apporte de profonds changements au sein des Syst`emes d, nous ´etayons cet ´etat de l'art par la simulation d'un cas m´etier illustratif des Smartgrids en

  2. Article original Digestion des protines de pois et de soja chez le veau

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Article original Digestion des protéines de pois et de soja chez le veau préruminant. II partiellement dégradées puissent échapper à la digestion dans l'intestin grêle dans le cas des aliments pois et - digestion - iléon - veau préruminant Summary ― Digestion of pea and soya-bean proteins in preruminant

  3. CHALEUR D'ADSORPTION DES GAZ PAR LE CHARBON A BASSE TEMPERATURE (-183) Par REN LEPOINTE.

    E-Print Network [OSTI]

    Boyer, Edmond

    CHALEUR D'ADSORPTION DES GAZ PAR LE CHARBON A BASSE TEMPERATURE (- 183°) Par RENÉ LEPOINTE. Elève au début de l'adsorption que par la suite. L'hydrogène donne un phénomène thermique. Introduction. - De très nombreuses recherches ont été faites sur l'adsorption des gaz par le charbon de bois

  4. REMARQUES SUR LE MMOIRE DE MM. NAGAOKA ET HONDA; Par CH.-ED. GUILLAUME.

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    621 REMARQUES SUR LE MÉMOIRE DE MM. NAGAOKA ET HONDA; Par CH.-ED. GUILLAUME. 11 est facile de voir que le plissement des courbes d'aimantation et d'allongement constaté par MM. Nagaoka et Honda et Honda indique un point singulier des alliages, ou s'il s'agit d'un fait fortuit. J'ajou- terai que

  5. Un nouvel lment : le Radiothorium dont l'manation est identique celle du Thorium 1

    E-Print Network [OSTI]

    Boyer, Edmond

    Un nouvel élément : le Radiothorium dont l'émanation est identique à celle du Thorium 1 Deuxième principalement par un mélange de terres rares, dont le thorium était la plus abondante. M. Dunstan, qui avait ii (pie la radioactivité des parties les plus solubles était identique il celle du thorium. Il fallait

  6. REGOLAMENTO PER LE SPESE IN ECONOMIA Disciplina delle forniture e servizi in economia

    E-Print Network [OSTI]

    Milano-Bicocca, Università

    1 REGOLAMENTO PER LE SPESE IN ECONOMIA TITOLO I Disciplina delle forniture e servizi in economia Art. 1 Normativa di riferimento 1. Il presente Titolo del Regolamento per le spese in economia è spese in economia" - per quanto ancora vigente ­ e dell'art. 125 del D.Lgs 12 aprile 2006 n. 163 "Codice

  7. Le luri : quelques notes sur une langue tchadique du Nigeria Bernard CARON

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 Le luri : quelques notes sur une langue tchadique du Nigeria Bernard CARON LLACAN (CNRS, INALCO arbres magnifiques de la savane du nord du Nigeria où ruissellent les cours d'eau dans la tendre d'une langue tchadique non citée dans (Shimizu, 1978), le luri : « LURI : a language of Nigeria SIL

  8. Anne Le Mouel, paper ID# 4-054-12 Fostering Energy Efficiency in manufacturing plants

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    economical breakthroughs in power and flow rate measurement Anne Le Mouel, EDF R&D Eco-Efficiency Cédex, FRANCE Email: anne.le-mouel@edf.fr Gilbert Schmitt, EDF R&D Eco-Efficiency & Industrial Process: gilbert-m.schmitt@edf.fr Maxime Dupont, EDF R&D Eco-Efficiency & Industrial Process Department Site des

  9. L'intgration des Supply chains Internationales impliques au Maroc : Le rle du contexte culturel.

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    « L'intégration des Supply chains Internationales impliquées au Maroc : Le rôle du contexte, Culture, Maroc. Abstract : This Article asks the question on the nature and the bases of development extérieur au Maroc, Maroc (2010)" #12;Introduction : Face à la mondialisation de l'économie et l

  10. L'IRD dans le monde Rgion du Haut Atlas, Maroc.

    E-Print Network [OSTI]

    L'IRD dans le monde Région du Haut Atlas, Maroc. #12;39 ··· � l'international ··· En outre-Orient. Au Maroc, le nombre de programmes a considérablement augmenté, résultat d'une dynamique de

  11. U ne rapide recension bibliographique sur la Tunisie et le Maroc laisse

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    U ne rapide recension bibliographique sur la Tunisie et le Maroc laisse apparaître que tradition et. La France moderne serait là au secours d'une Tunisie et d'un Maroc traditionnels incapables de s) affirme par exemple qu'au Maroc, 1. Nombreux sont les auteurs qui convoquent l'une ou l'autre dans le

  12. OBSERVATION PAR MICROSCOPIE LECTRONIQUE D'AMAS DE LACUNES DANS LE NICKEL TREMP

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    285 OBSERVATION PAR MICROSCOPIE ÉLECTRONIQUE D'AMAS DE LACUNES DANS LE NICKEL TREMPÉ G. LOZES (1 décembre 1970) Résumé. 2014 Des échantillons de nickel de haute pureté ont été étudiés, après trempe, à la, dans le nickel, une forte tendance à l'agglomération, et qu'en dehors des amas visibles, il se forme d

  13. GENERATION D'INDICATEURS DANS LE CADRE D'UNE POLITIQUE DE MAINTENANCE PREVENTIVE CONDITIONNELLE

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    Paris-Sud XI, Université de

    GENERATION D'INDICATEURS DANS LE CADRE D'UNE POLITIQUE DE MAINTENANCE PREVENTIVE CONDITIONNELLE Indicators generation as part of a policy of conditional preventive maintenance Pascal VRIGNAT, Manuel AVILA DE MAINTENANCE PREVENTIVE CONDITIONNELLE, Tours : France (2012)" #12;- le système se dégrade

  14. TAT ACTUEL DE LA MISE AU POINT BIBLIOGRAPHIQUE SUR LE NIOBIUM ET SES ALLIAGES

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    597 ÉTAT ACTUEL DE LA MISE AU POINT BIBLIOGRAPHIQUE SUR LE NIOBIUM ET SES ALLIAGES par F. JEANNE, J une bibliographie auto-indexée sur le niobium et ses alliages. Abstract. 2014 The « Centre d'Information de Thermodynamique Chimique Minérale » presents a self indexed bibliography on niobium and its alloys

  15. Algorithme exact pour le probl`eme de l'independant faiblement connexe de

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Fatiha BENDALI, Jean MAILFERT, Djelloul MAMERI LIMOS UMR CNRS 6158, Campus Scientifique des C´electionner le plus petit nombre Travail partiellement financ´e par le projet TODO ANR 09-EMER-010. bendali,mailfert,mameri BENDALI, Jean MAILFERT, Djelloul MAMERI de tels sommets. Cependant d´eterminer un dominant connexe ou

  16. Universit du Maine, Le Mans, France cole Doctorale Sciences Pour l'Ingnieur, Gosciences, Architecture

    E-Print Network [OSTI]

    Boyer, Edmond

    to monitoring the sodium! cooled fast reactors (SFR) and consists in positioning in the reactor core rapides refroidis par du sodium liquide (RNR!Na). De manière générale, la télémétrie consiste à travers un milieu inhomogène et aléatoire car le sodium liquide est le siège de fluctuations de

  17. Le magn)sme ar)ficiel pour les gaz d'atomes froids Jean Dalibard

    E-Print Network [OSTI]

    Dalibard, Jean

    Le magné)sme ar)ficiel pour les gaz d'atomes froids Jean Dalibard Année 2013-14 Chaire Atomes et rayonnement Magné8sme ar8ficiel pour un atome isolé (I) #12;Simula8on du magné8sme avec des atomes neutres Le but : réaliser pour

  18. Dimensions of identity Within an international network of researchers, le Rseau d'tudes

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Dimensions of identity Within an international network of researchers, le Réseau d'études sur le journalisme (the Network for journalism studies), we have developed this conception of journalism RUELLAN Université de Rennes, France ABSTRACT Thinking of journalism in new ways should be free of any

  19. A S T R O F I S I C A Le Stelle n. 5360

    E-Print Network [OSTI]

    Savin, Daniel Wolf

    ghiaccio emettono raggi X di alta energia? Le risposte a queste domande sono racchiuse negli spettri della'Universo al di là del Sistema Solare. Le leggi della fisica ci dicono che ogni atomo, o molecola, emette o come un prisma disperde la luce solare in un arcobaleno di Fare astrofisica in laboratorioNon tutti gli

  20. The PortevinLe Chatelier (PLC) effect and shear band formation in an AA5754 alloy

    E-Print Network [OSTI]

    Niewczas, Marek

    The Portevin­Le Chatelier (PLC) effect and shear band formation in an AA5754 alloy Herdawandi Halim in order to observe Portevin­Le Chatelier (PLC) band behaviour during tensile deformation of AA5754 sheet and subsequently to measure the level of incre- mental plastic strain carried within the bands. In addition, PLC

  1. Facult des sciences infirmires Le Baccalaurat en sciences infirmires est offert selon divers par-

    E-Print Network [OSTI]

    Montréal, Université de

    titulaires d'un DEC en soins infirmiers, première composante du DEC- Baccalauréat intégré et à l'intention des infirmières et infirmiers en exercice. Le programme est offert selon deux modalités : temps plein destiné aux infirmières et infirmiers en exercice. Le parcours est constitué de trois étapes, les Mineures

  2. La coordination dans le champ sanitaire et mdico-social Enjeux organisationnels et dynamiques professionnelles

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    , management d'équipe, et animation de réseau, p.117 C. Coordonner le parcours des personnes : gestionnaire de : Centre hospitalier universitaire CLIC : Centres locaux d'information et de coordination à caractère, qui sont confrontés à une fragmentation de l'offre (entre le secteur hospitalier, la médecine de ville

  3. Sa mission Dans le but d'apporter une contribution significative et exclusive

    E-Print Network [OSTI]

    #12;#12;Sa mission Dans le but d'apporter une contribution significative et exclusive à l particulier dans le développement de l'École. Recevoir des dons, legs, contributions en argent, en valeurs Fondation et l'École. Développer la culture philanthropique auprès des diplômés, des étudiants, des amis de

  4. Le touriste, l'habitant et la gestion du tourisme So Paulo : caractristiques, concertation et enjeux.

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Le touriste, l'habitant et la gestion du tourisme à São Paulo : caractéristiques, concertation et de la population, du tourisme et de la gestion touristique paulistanos (c'est-à-dire, de la ville de prises. Pas faux, mais vous savez aussi que ce n'est pas toujours le cas. On commence à lui donner plus d

  5. Gestion et rflexions actuelles ien avant que le concept de biodiversit

    E-Print Network [OSTI]

    Boyer, Edmond

    Gestion et réflexions actuelles ien avant que le concept de biodiversité n'émerge dans le corpus colonisation de ces espèces, figurent souvent des éléments sur la gestion de ces espèces envahissantes, des, tout ceci pour faciliter leur gestion. La gestion ­ « Faut-il intervenir ? » ou « Comment s

  6. Approved Module Information for LE3025, 2014/5 Module Title/Name: Leadership & Management

    E-Print Network [OSTI]

    Neirotti, Juan Pablo

    Communication: 2 Module Code: LE3025 School: Languages and Social Sciences Module Type: Standard Module New-oriented communication, research, and publication; apply the knowledge to the production of spoken and written texts both & Management Communication: 1 (LE3024). Co-requisites: None Specified Module Learning Information Module Aims

  7. Pour obtenir le grade de DOCTEUR DE L'UNIVERSIT DE GRENOBLE

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    le 7 juin 2011, devant le jury composé de : M. Nihat AKTAS Professeur de Finance à l'EMLYON Business Patrick ROUSSEAU, Nihat AKTAS et Jean- François GAJEWSKI qui m'ont fait l'honneur de rapporter cette thèse

  8. Propagation de Contraintes et Listes Tabou pour le CSP Mohammad DIB, Alexandre CAMINADA, Hakim MABED

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Propagation de Contraintes et Listes Tabou pour le CSP Mohammad DIB, Alexandre CAMINADA, Hakim pour le CSP. Nous proposons une méthode déterministe qui permet de gérer dynamiquement des coupes dans percentages. 1 INTRODUCTION Un problème de satisfaction de contraintes (CSP) [1] est défini par un ensemble de

  9. DIFFUSION ELASTIQUE DES NEUTRONS PAR LE TRITIUM A 14 MeV

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    DIFFUSION ELASTIQUE DES NEUTRONS PAR LE TRITIUM A 14 MeV Laboratoire de Neutronique, CNRS, Toulouse of neutrons from tritium is studied with a thin scatterer close to a Cs1 scintillator. The experimental. Le diffuseur utilisé est une cible mince contenant 2,22 an3 de tritium absorbé dans une épaisseur de

  10. IHM perles pour le Cloud Computing : premiers retours d'exprience en informatique mdicale

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    IHM perlées pour le Cloud Computing : premiers retours d'expérience en informatique médicale Laure.nom}@imag.fr RÉSUMÉ L'émergence de l'informatique à la demande telle que le Cloud Computing périme la métaphore computing such as Cloud Computing makes the current desktop metaphor outdated. There is a need to open

  11. LE BULLETIN DE L'EPI N 43 LOGO, LISTES ET AFFECTATIONS LOGO, LISTES ET AFFECTATIONS

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    65 LE BULLETIN DE L'EPI N° 43 LOGO, LISTES ET AFFECTATIONS LOGO, LISTES ET AFFECTATIONS Danielle et listes en LOGO. MISE EN SITUATION SANS ORDINATEUR. 1. Décodage Situation matérielle De grandes. Exemple d'univers possibles : Course au Trésor, Tintin enquête... #12;67 LE BULLETIN DE L'EPI LOGO, LISTES

  12. Procedures for the use of Lexan and Makrofol SSNTDs in the detection of environmental concentrations of {sup 235}U and {sup 239}Pu

    SciTech Connect (OSTI)

    Henderson, C.L.

    1993-03-01T23:59:59.000Z

    Solid State Nuclear Track Detectors are used to study a variety of atomic particles. Polycarbonate SSNTD is used to study environmental concentrations of {sup 235}U and {sup 239}Pu in human urine and feces through fission track analysis. The samples of interest are deposited upon a Lexan slide, covered with a piece of Makrofol and exposed to a neutron fluence of 1.1 X 10{sup 17}. The fissile isotopes in the sample fission and the resulting fission fragments pass through either the surface of the Lexan or the surface of the Makrofol. The positive Coulombic attraction of the ionized fission fragments causes the electrons of the polycarbonate lattice to move towards the path of these particles, resulting in the breakage of chemical bonds in the lattice. The detector is then chemically etched in 6.5 N KOH that preferentially dissolves the damaged polycarbonate left in the path of the fission fragment. The chemically etched fission tracks are permanent records of the path of the fission fragment. The etched fission tracks in Lexan are optically counted using a microscope and the fission tracks in Makrofol are counted using a Spark Chamber. The amount of fissile material in the original sample can be calculated from the number of fission tracks. This paper presents further details of procedures for etching fission tracks in Lexan and Makrofol and for operating a Spark Chamber to count etched fission tracks in Makrofol. The physics of fission track formation in dielectric detectors is also discussed, as well as the physics of the Spark Chamber.

  13. Theoretical analyses of (n,xn) reactions on sup 235 U, sup 238 U, sup 237 Np, and sup 239 Pu for ENDF/B-VI

    SciTech Connect (OSTI)

    Young, P.G.; Arthur, E.D.

    1991-01-01T23:59:59.000Z

    Theoretical analyses were performed of neutron-induced reactions on {sup 235}U, {sup 238}U, {sup 237}Np, and {sup 239}Pu between 0.01 and 20 MeV in order to calculate neutron emission cross sections and spectra for ENDF/B-VI evaluations. Coupled-channel optical model potentials were obtained for each target nucleus by fitting total, elastic, and inelastic scattering cross section data, as well as low-energy average resonance data. The resulting deformed optical model potentials were used to calculate direct (n,n{prime}) cross sections and transmission coefficients for use in Hauser-Feshbach statistical theory analyses. A fission model with multiple barrier representation, width fluctuation corrections, and preequilibrium corrections were included in the analyses. Direct cross sections for higher-lying vibrational states were calculated using DWBA theory, normalized using B(E{ell}) values determined from (d,d{prime}) and Coulomb excitation data, where available, and from systematics otherwise. Initial fission barrier parameters and transition state density enhancements appropriate to the compound systems involved were obtained from previous analyses, especially fits to charged-particle fission probability data. The parameters for the fission model were adjusted for each target system to obtain optimum agreement with direct (n,f) cross section measurements, taking account of the various multichance fission channels, that is, the different compound systems involved. The results from these analyses were used to calculate most of the neutron (n,n), (n,n{prime}), and (n,xn) cross section data in the ENDF/B/VI evaluations for the above nuclei, and all of the energy-angle correlated spectra. The deformed optical model and fission model parameterizations are described. Comparisons are given between the results of these analyses and the previous ENDF/B-V evaluations as well as with the available experimental data. 14 refs., 3 figs., 1 tab.

  14. Effet d'une formulation du nombre de Prandtl turbulent variable sur le transfert de chaleur en

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    )" #12;échangeurs de chaleur, les turbines à gaz, les réacteurs nucléaires...etc. Le nombre de Prandtl

  15. tude gntique du syndrome de l'abduction des membres (splayleg) chez le porcelet nouveau-n

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    �tude génétique du syndrome de l'abduction des membres (splayleg) chez le porcelet nouveau-né 1-en-Josas Résumé Le syndrome de l'abduction des membres du porcelet nouveau-né a été observé entre 1973 et 1979. - Introduction Le syndrome de l'abduction des membres chez le porcelet nouveau-né, couram- ment appelé « pattes

  16. Image Segmentation using a Generalized Fast Marching Nicolas Forcadel (ENPC-CERMICS, Paris), Carole Le Guyader (INSA

    E-Print Network [OSTI]

    Forcadel, Nicolas

    ), Carole Le Guyader (INSA Rennes), Christian Gout (INRIA, France) Multivariate Approximation: Theory and Applications April 26 - May 01, 2007 N. Forcadel C. Le Guyader, C. Gout Image Segmentation #12;Plan 1 Fast. Le Guyader, C. Gout Image Segmentation #12;Plan 1 Fast Marching Method 2 Generalized Fast Marching

  17. LA DIFFUSION DE LA LUMIRE PAR LE MTHANE ET SES HOMOLOGUES GAZEUX par MM. J. CABANNES et J. GAUZIT,

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    hydrocarbures saturés gazeux de la série grasse n'est pas complètement polarisée. Le facteur de dépolarisation molécules voisines. Dans le travail actuel, nous avons choisi comme sujets d'expérience les hydrocarbures;183 2. Préparation des hydrocarbures. - Nous avons préparé les terrnes de la série par le procédé

  18. Louvain-la-Neuve, le 29 juin 2012 Vincent Laborderie, chercheur l'UCL, renforce ses conclusions

    E-Print Network [OSTI]

    Nesterov, Yurii

    (ainsi au Montenegro, qui a obtenu l'indépendance en 2006, les oui à la scission devaient atteindre 55 scission, comme ce fut le cas au Sud-Soudan et au Montenegro », commente le chercheur en sciences, Montenegro, Kosovo). Exercice d'application, le sort de la Belgique lui semble très clair : un accord global

  19. Le polyimide-alumine : un isolant performant utilis dans un aimant supraconducteur refroidi l'hlium superfluide

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1761 Le polyimide-alumine : un isolant performant utilisé dans un aimant supraconducteur refroidi à'est avéré nécessaire de développer un matériau nouveau : le polyimide-alumine. Le programme de développement to develop a new material : polyimide-alumina. The development program resulted in the achievement

  20. LE BULLETIN DE L'EPI N 57 NOTION DE FONCTION EN LOGO UNE INTRODUCTION DE LA NOTION DE FONCTION

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    187 LE BULLETIN DE L'EPI N° 57 NOTION DE FONCTION EN LOGO UNE INTRODUCTION DE LA NOTION DE FONCTION UTILISANT LE LANGAGE LOGO M.-A. EGRET, D. GUIN INTRODUCTION L'un des résultats essentiels de la psychologie. Nous avons choisi le langage LOGO, car il facilite une approche de l'activité de programmation par la

  1. Anaerobic Biotransformation and Mobility of Pu and PuEDTA

    SciTech Connect (OSTI)

    Xun, Luying

    2005-06-01T23:59:59.000Z

    Although our goal is to isolate anaerobic EDTA degraders, we initiated the experiments to include nitrilotriacetate (NTA), which is a structure homologue of EDTA. All the aerobic EDTA degraders can degrade NTA, but the isolated NTA degraders cannot degrade EDTA. Since NTA is a simpler structure homologue, it is likely that EDTA-degrading ability is evolved from NTA degradation. This hypothesis is further supported from our characterization of EDTA and NTA-degrading enzymes and genes (J. Bact. 179:1112-1116; and Appl. Environ. Microbiol. 67:688-695). The EDTA monooxygenase and NTA monooxygenase are highly homologous. EDTA monooxygenase can use both EDTA and NTA as substrates, but NTA monooxygenase can only use NTA as a substrate. Thus, we put our effort to isolate both NTA and EDTA degraders. In case, an anaerobic EDTA degrader is not immediately enriched, we will try to evolve the NTA degraders to use EDTA. Both aerobic and anaerobic enrichment cultures were set.

  2. Anaerobic Biotransformation and Mobility of Pu and PuEDTA

    SciTech Connect (OSTI)

    Xun, Luying

    2005-06-01T23:59:59.000Z

    The objective of this report is to isolate anaerobic EDTA-degrading bacteria. Although our goal is to isolate anaerobic EDTA degraders, we initiated the experiments to include nitrilotriacetate (NTA), which is a structure homologue of EDTA. All the aerobic EDTA degraders can degrade NTA, but the isolated NTA degraders cannot degrade EDTA. Since NTA is a simpler structure homologue, it is likely that EDTA-degrading ability is evolved from NTA degradation. This hypothesis is further supported from our characterization of EDTA and NTA-degrading enzymes and genes (J. Bact. 179:1112-1116; and Appl. Environ. Microbiol. 67:688-695). The EDTA monooxygenase and NTA monooxygenase are highly homologous. EDTA monooxygenase can use both EDTA and NTA as substrates, but NTA monooxygenase can only use NTA as a substrate. Thus, we put our effort to isolate both NTA and EDTA degraders. In case, an anaerobic EDTA degrader is not immediately enriched, we will try to evolve the NTA degraders to use EDTA. Both aerobic and anaerobic enrichment cultures were set.

  3. La dynamique de communication entre Hydro-Qubec et les Innus dans le cadre du projet de la Romaine

    E-Print Network [OSTI]

    La dynamique de communication entre Hydro-Québec et les Innus dans le cadre du projet de la Romaine Fortin, 2014 #12;#12;iii Résumé Le mémoire porte sur la dynamique de communication entre Hydro-Québec et, composées dInnus et de représentants dHydro-Québec, et dont le rôle est de gérer les fonds. De plus, le

  4. Desired PU Loading During Vitrification

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011 Strategic Plan Department of EnergyDeputy Secretary visits Oak

  5. Le cyclone : un nouveau racteur chimique solaire gaz-solide Application la mise en oeuvre en continu de la pyrolyse flash de sciure de bois

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    separators, can be also used as gas-solid chemical reactors. Preli- minary experiments made on a cyclone535 Le cyclone : un nouveau réacteur chimique solaire gaz-solide Application à la mise en oeuvre en, révisé le 17 décembre 1979, accepté le 18 décembre 1979) Résumé. 2014 Le cyclone, bien connu comme

  6. Religiosity, Freedom of Expression and Lebanon and Morocco

    E-Print Network [OSTI]

    Byers III, Ward

    2014-05-31T23:59:59.000Z

    history of existence, than some “modern” Western democratic nations. Furthermore, as recent14 - ?4 Bellin, 139-141. 8 Samuel P. Huntington, "The Clash of Civilizations?,” Foreign Affairs (1993): 22-49.9 Abdou Filali-Ansary, “Muslims and Democracy...,” Journal of Democracy 10, no. 3 (1999): 18, 19. 10 Ibid., 19.11 Ibid., 20-22.12 This list is cited directly from Abdou Filali-Ansary’s, (1999), “Muslims and Democracy.”13 Both Greece and Portugal, both of which have been under military rule as recent...

  7. Conservation of architecture and settlements in Lebanon : two case studies

    E-Print Network [OSTI]

    Al-Hasani, Naji Maher-Nasr-e-din

    1991-01-01T23:59:59.000Z

    Most of the information in this proposal is derived from my former and current research on Beirut, Methodology for Slow Conservation of War-Damaged Structures in Downtown Beirut. In the earlier version I have failed to ...

  8. Lebanon County, Pennsylvania: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I Geothermal Pwer Plant Jump to:Landowners and Wind EnergyIndiana: EnergyLands in Washington

  9. Lebanon, New Jersey: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

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

  10. City of Lebanon, Missouri (Utility Company) | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof EnergyInnovationin Urban Transport |CityCityCity ofCityCity ofLawler, IowaCity

  11. New Lebanon, Ohio: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I Geothermal Pwer PlantMunhall, Pennsylvania: EnergyEnergyPPCR)NevisInformation 4thInformationNew

  12. City of Lebanon, Ohio (Utility Company) | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model, click here.TelluricPowerCityJonesville, LouisianaLansing,

  13. Sminaire DIDIREM 2010 PARIS 7 Le manuel scolaire carrefour de tensions

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Bordeaux 2 et Marie-Lise Peltier Equipe DIDIREM IUFM de Rouen, Université de Rouen Le titre auquel vous, loin s'en faut, celle présumée par les auteurs. Pour autant, cet outil est actuellement incontournable

  14. analysis le bois-electricite: Topics by E-print Network

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

    sur l'organisation du march ? D'un point de vue marchand, le big data consiste transformer les traces big data est donc un processus de documentation. D'abord, nous...

  15. Green space and cosmic order: Le Corbusier’s understanding of nature 

    E-Print Network [OSTI]

    Dummett, Emma

    2008-01-01T23:59:59.000Z

    This thesis attempts to define Le Corbusier’s understanding of the natural world. While this theme has frequently been discussed in the secondary literature, it has not yet been comprehensively addressed. Each chapter ...

  16. Paris, le 14 fvrier 2013 Valid en sance du CCHSCT du 13/02/13

    E-Print Network [OSTI]

    Pouyanne, Nicolas

    : Jean-François KIEFFER titulaire 1 siège Anthony PECQUEUX suppléant UNSA Recherche : Christine MOUFFLE les organisations syndicales pour traiter ce dossier. M. Inglebert rappelle que le courrier suivant

  17. TREMPE DES LACUNES DANS LE NIOBIUM Claude TETE, Michel LEBOUCHE et Bernard DEVIOT

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    423 TREMPE DES LACUNES DANS LE NIOBIUM Claude TETE, Michel LEBOUCHE et Bernard DEVIOT Laboratoire,5 gm d'épaisseur, de niobium MRC, grade Marz, sont soudés par points sur des passages en tungstène

  18. LIEU COMMUN ET CREATION POETIQUE NEOCLASSIQUE : LE CAS DE TOMAS DE IRIARTE (1750-1791)

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 LIEU COMMUN ET CREATION POETIQUE NEOCLASSIQUE : LE CAS DE TOMAS DE IRIARTE (1750-1791) Marc MARTI. 222 : « ¿ Qué se entendía por imitación a principios del siglo XVIII ? siguiendo la corriente clásica

  19. Thermodynamics based stabilitization of CSTR networks H. Hoang, F. Couenne, Y. Le Gorrec and D. Dochain

    E-Print Network [OSTI]

    Boyer, Edmond

    Thermodynamics based stabilitization of CSTR networks H. Hoang, F. Couenne, Y. Le Gorrec and D. Dochain Abstract-- This paper shows that any potential function fulfilling certain thermodynamic stability the theoretical developments. Keywords. Irreversible thermodynamics, CSTR networks, Port Hamiltonian systems

  20. Pour obtenir le grade de DOCTEUR DE L'UNIVERSIT DE GRENOBLE

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    , Procédés, Production Le Crédit Burn-up des combustibles REP-MOX français : méthodologie et conservatismes REP-MOx, une aventure qui a débuté il y a trois ans au sein du Laboratoire d'Etudes du Cycle du CEA

  1. Thse prsente pour obtenir le grade de Docteur de l'Universit Paris-Est

    E-Print Network [OSTI]

    -BODIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Rapporteur Mme Anne VENTURA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Rapporteur M'avoir accepté de présider ce jury. Je le remercie également, ainsi que Mme Anne VENTURA de l'Université de

  2. Le probl`eme biologique God is indeed a jealous God

    E-Print Network [OSTI]

    Sagot, Marie-France

    Chapitre 2 Le probl`eme biologique God is indeed a jealous God He cannot bear to see That we had donc parfois plus pol'emiques [Danchin, 1990] [Jacob, 1970] [Jacob, 1981] [Jacob, 1987] [Kauf­ mann

  3. LE BULLETIN DE L'EPI N 65 LA ROBOTIQUE PDAGOGIQUE ! LA ROBOTIQUE PDAGOGIQUE !

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ? Daniel MARCHAND Je rentre justement de Mexico (Mexique) où s'est tenu le "Troisième Congrès International'automate "intelligent". #12;120 Daniel MARCHAND LE BULLETIN DE L'EPI Nombreux sont donc ceux qui pratiquent la R.P. sans/développement en R.P. soute- nue financièrement entre autre par l'APO QUEBEC), jusqu'à l'université où elle est

  4. REMARQUES SUR LE MMOIRE DE MM. NAGAOKA ET HONDA; Par CH.-ED. GUILLAUME.

    E-Print Network [OSTI]

    Boyer, Edmond

    621 REMARQUES SUR LE M�MOIRE DE MM. NAGAOKA ET HONDA; Par CH.-ED. GUILLAUME. 11 est facile de voir que le plissement des courbes d'aimantation et d'allongement constaté par MM. Nagaoka et Honda et Honda indique un point singulier des alliages, ou s'il s'agit d'un fait fortuit. J'ajou- terai que

  5. Le Lait, 1986, 66 (2) 117-133 Etude chimique du smen marocain

    E-Print Network [OSTI]

    Boyer, Edmond

    'Origine animale (HIDAOA), Institut Agronomique et Vétérinaire Hassan II, B.P. 6202-Rabat-Instituts, Maroc, pratiquée dans tout le Maroc, est suscep- tible de quelques modifications selon les provinces : - le beurre préparation qui est effectué dans les régions du Nord et du Sud du Maroc, là où l'élevage caprin prédomine

  6. Pierre Mends-France et le Maroc : un homme encercl ? David Lambert

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Pierre Mendès-France et le Maroc : un « homme encerclé » ? David Lambert UMR 5136 Framespa l'apparent attentisme du président Mendès-France à l'égard du Maroc. Ainsi A. Grosser, en 1984, qui : « passons sur le Maroc. La discontinuité se produira en 19551 ». Ou encore Hervé Bleuchotqui, dans son

  7. Marginalit biogographique et rsilience Le territoire forestier insulaire du Fleuve Uruguay, 1800-2000.

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 Marginalité biogéographique et résilience Le territoire forestier insulaire du Fleuve Uruguay Uruguay, 1800-2000. Colloque « La nature a-t-elle encore une place dans les milieux géographiques territoires forestiers. Dans les îles de l'Uruguay, exploitées dès le XVIIè siècle pour leur bois, si rare

  8. L'instrumentation des activits publiques. Le cas d'une universit

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    , 2003). A partir de ce constat, la question fondamentale à laquelle se confronte le NPM est celle de l publiques (Ittner and Larcker 1998). En édifiant en référence les pratiques du secteur privé, le NPM met en). L'étude du NPM génère donc des attitudes très contrastées (Greiling, 2006 ; Tal

  9. Le magn)sme ar)ficiel pour les gaz d'atomes froids

    E-Print Network [OSTI]

    Dalibard, Jean

    Le magné)sme ar)ficiel pour les gaz d'atomes froids Jean Dalibard Année 2013-14 Chaire Atomes et rayonnement #12;Thème général du cours : le magné?sme = q v B = 0 perdu d'avance ? pas forcément... On peut émuler ce magné?sme par

  10. LE BULLETIN DE L'EPI N 39 ROTATIONS MULTIPLES D'OBJETS TRIDIMENSIONNELS REPRSENTATION GRAPHIQUE

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    . Dans le premier cas, l'examen des figures successives apparues sur l'écran permet par exemple d compte d'un objet ou d'un phénomène (graphique à 3 dimens.). Dans le deuxième cas, en filmant chaque'hémisphère Nord, mieux meublé par les continents, et par contre allégé de nombreuses £les telles que la Nouvelle

  11. L'IRAN ET LE "CROISSANT CHIITE": MYTHES, RALITS ET PROSPECTIVE

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    141 L'IRAN ET LE "CROISSANT CHIITE": MYTHES, R�ALIT�S ET PROSPECTIVE Le recteur Gérard faire évoluer les rapports de force, plus particulièrement au Moyen-Orient, en faveur de l'Iran et, donc chiite ». Ce dernier, allant de l'Iran au Liban, comprendrait d'abord l'Irak post-Saddam, dont les

  12. the ANAK Society LeAderShip eNrichmeNt eNdoWmeNt

    E-Print Network [OSTI]

    Li, Mo

    the ANAK Society LeAderShip eNrichmeNt eNdoWmeNt Campaign Defining the Technological ResearchGT@gatech.edu www.development.gatech.edu Celebrating 100 Years 1908-2008 #12;The ANAK SocieTy LeAderShip eNrichmeNT Society Leadership Enrichment Endowment with a minimum goal of one million dollars. When the ANAK Society

  13. Distribution automobile en Europe et concurrence : le point de vue de l'conomiste

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 Distribution automobile en Europe et concurrence : le point de vue de l'économiste Philippe BARBET Professeur d'économie à l'université de Paris XIII1 Le secteur de la distribution automobile en'emploi. Les dépenses liées à l'automobile représentent selon l'INSEE entre 10,5 à 11 % du budget des ménages

  14. peut classer les raies en trois groupes : celles qui sont fortes dans le spectre de la chromosphre et dans le spectre solaire (Na, Mg, Al,

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    Paris-Sud XI, Université de

    of the Bunsen flame (Effet du sodium sur les bandes des hydrocarbures dans le spectre de la flamme du Bunsen on introduit de la vapeur de sodium dans un brîileur Bunsen, l'intensité du spectre des hydrocarbures ne hydrocarbures. En ini.roduisant, dans un bec Bunsen circulaire, un cylindre d'amiante imprégné de sel, il ne

  15. positive, dans l'air sec la pression ordinaire, le champ tant d'en-viron 10000 volts, omm,5; dans la dcharge ngative, le champ tant

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    Boyer, Edmond

    . Hahn (4) celle des particules a du thorium B et du thorium C. L'auteur, par la méthode de la (tandis que, d'après Hahn, le thorium émet deux espèces de rayonsx), et que les particules ce du polonium. - Relative activity of radium and thorium, measured by the gamma- radiation (Rappor

  16. Effets sur la digestion et le mtabolisme des vaches laitires d'infusions d'acides gras volatils dans le rumen

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    Paris-Sud XI, Université de

    Effets sur la digestion et le métabolisme des vaches laitières d'infusions d'acides gras volatils.N.R.A., Saint-Gilles, 35590, L'Hermitage, France. Summary. Effects of !uminal infusion of volatile fatty acids and duodenal infusion of caseinate on digestion and metabolism in the dairy cow. II. - General and mammary

  17. Effets sur la digestion et le mtabolisme des vaches laitires d'infusions d'acides gras volatils dans le rumen

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Effets sur la digestion et le métabolisme des vaches laitières d'infusions d'acides gras volatils.N.R.A. Saint-Gilles, 35590 L'Hermitage, France Summary. Effects of ruminal infusion of volatile fatty acids and duodenal infusion of casei- nate on digestion and metabolism in the dairy cow. l. - Production

  18. *. Cet expos a t prpar dans le cadre de l'Amicale 1997 runissant les anciens de la Facult de droit de l'Universit de Sherbrooke qui s'est tenue Sherbrooke le 25 octobre 1997.

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    Spino, Claude

    *. Cet exposé a été préparé dans le cadre de l'Amicale 1997 réunissant les anciens de la Faculté de droit de l'Université de Sherbrooke qui s'est tenue à Sherbrooke le 25 octobre 1997. **. Professeure à . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 284 #12;#12;(1997-98) 28 R.D.U.S. Le patrimoine familial : aspects civils et fiscaux 259 1. E

  19. CAHIER DE RECHERCHE : 2008-05 E1 En France, le concours d'accs aux tudes en soins

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    Paris-Sud XI, Université de

    1 CAHIER DE RECHERCHE : 2008-05 E1 En France, le concours d'accès aux études en soins infirmiers de-11Feb2010 #12;2 En France, le concours d'accès aux études en soins infirmiers de 1992 répond-il aux concours d'accès aux études en soins infirmiers défini en 1992, représente le "sas d'entrée en formation

  20. En vue d'obtenir le grade de : Docteur de l'Ecole Normale Suprieure de Lyon

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    Boyer, Edmond

    5182 CNRS/ENSL Présentée et soutenue publiquement le 20 Septembre 2007 par Monsieur : Nicolas MIFSUD

  1. 10e Colloque National en Calcul des Structures 9-13 Mai 2011, Presqu'le de Giens (Var)

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    Paris-Sud XI, Université de

    'une fissure à se propager le long des joints de grains ou à l'intérieur de ceux-ci. Finalement, Werwer et al

  2. L'Universit Yale L'Universit Yale se trouve dans le centre historique de New Haven, ville portu-

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    'Environnement en 1900, l'Ecole d'Infirmiers en 1923, le Conservatoire de Théâtre en 1955, l'Ecole d'Architecture en

  3. PONTIFICIA UNIVERSIDAD CATOLICA DE CHILE ESCUELA DE INGENIERIA

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    Rudnick, Hugh

    interconectado de tensión 0,96 pu. Su turbina le permite entregar una potencia activa máxima de 1,05 pu. La el generador simultáneamente con entregar potencia activa máxima. Si se puede sobrecargar la turbina

  4. Le produit r a est, on le voit, loin d'tre constant ; il dcrot quand la temprature s'lve, et cela de 12 pour 100 de sa valeur,

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    Paris-Sud XI, Université de

    'UN LIQUIDE; PAR M. E. BOUTY. [SUITE (1) ]. II. ---· MESURE ABSOLUE DU PHÉNOMÈNE DE PELTIER AU CONTACT D production du phénomène de Peltier, s'il existe ; enfin le dégagement de chaleur résultant d possible de celles de Inexpérience. . Pour réaliser cette étude préliminair e, j'entoure le réservoir du

  5. non donne une couleur orange, le crypton un violet ple, le xnom un bleu ciel. Les spectres correspondants sont trs brillants et trs

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    Paris-Sud XI, Université de

    de gaz plus réfractaires que l'azote et que l'oxygène. En d'autres termes, le vide produit est à peu'une petite turbine placée dans une enceinte refroidie dans un mélange réfrigérant. Abels (1) avait représenté mano- mètre et sur la loi de la pression des gaz entre 1,5 et 0,01 millimètre de mer- cure). 2014 Phil

  6. On entendait bien de Villejuif le canon de Montlhry, mais assez difficilement de Montlhry celui de Villejuif, bien que le vent

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    Boyer, Edmond

    pro- bablement que Villejuif est dans la plaine, tandis que 3Iontlliéry est d'abord à 80 pieds au'expérience, le ciel était clair, il y avait de la rosée, et la diminution de température dans l'air se faisait de série. - Tome Il. - Juillet I876. H.-M. B0SANQUET.2013 Nouvelle for/ne de polariscope et son application

  7. SYNTHESE EN FRANAIS TITRE: NEUTRONIC STUDY OF THE MONO-RECYCLING OF AMERICIUM IN PWR

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    Paris-Sud XI, Université de

    retraitement standard consiste à séparer le plutonium afin de fabriquer un combustible MOX sur base d'uranium appauvri. La concentration du Pu dans le MOX est déterminée pour atteindre un taux d'irradiation du MOX de refroidissement de 30 ans demande à augmenter la teneur en Pu dans le MOX. L'241Am, avec une durée de vie de 432

  8. Le coup d'oeil du scarabe : Charles Nordmann, ou pourquoi la guerre est l'affaire des savants

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    Paris-Sud XI, Université de

    'Alsace allemande, c'est le choc. Pour la première fois, Nordmann croise des soldats qui reviennent du front colonne de quatre. L'un de ces petits soldats nous raconte que, parmi les monceaux de cadavres prussiens scientifique, à peine atténuée par le fait qu'il décrive l'anéantissement de soldats ennemis. La mort fauche la

  9. Le gisement Ag Hg de Zgounder (Jebel Siroua, Anti-Atlas, Maroc) : un pithermal noprotrozoque de type

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    Paris-Sud XI, Université de

    Le gisement Ag Hg de Zgounder (Jebel Siroua, Anti- Atlas, Maroc) : un épithermal néoprotérozoïque Compagnie minière de Touissit (CMT), 279, bd Zerktouni, Casablanca, Maroc Abstract The Zgounder ore deposit and more as a silver metallogenic province Résumé Le gisement argentifère de Zgounder (Anti-Atlas, Maroc

  10. NOTE SUR LES EFFETS DE L'INFUSION PERMANENTE D'UN MLANGE D'ACIDES GRAS VOLATILS DANS LE

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    Paris-Sud XI, Université de

    NOTE SUR LES EFFETS DE L'INFUSION PERMANENTE D'UN MÉLANGE D'ACIDES GRAS VOLATILS DANS LE RUMEN DU problèmes techniques : infusion permanente et prolongée, dans le rumen, de quantités d'acides gras volatils début de l'infusion, les veaux étaient âgés d'environ 4 mois et pesaient respectivement 95 et 80 kg

  11. Agro-business et dveloppement agricole : quels enjeux pour quelles perspectives ? Le cas de la zone Office du Niger (Mali).

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    Boyer, Edmond

    agricole, agriculture familiale, agro-business, gestion de l'eau, accès au foncier Key words: irrigation perspectives? Le cas de la zone Office du Niger. Mali., Côte D'Ivoire (2009)" #12;Résumé. L'évolution du marchéAgro-business et développement agricole : quels enjeux pour quelles perspectives ? Le cas de la

  12. 1 2009, F. Boyer, UJF Cours de Systmes d'Exploitation Polytech/RICM2 Le systme NACHOS

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    Pous, Damien

    1© 2009, F. Boyer, UJF Cours de Systèmes d'Exploitation ­ Polytech/RICM2 Le système NACHOS F. Boyer 2.1 Comprendre le fonctionnement de Nachos 2.2 Programmer un mécanisme de base #12;2© 2009, F. Boyer-id.imag.fr/Laboratoire/Membres/Briat_Jacques/perso.html/NACHOS/TP/ #12;3© 2009, F. Boyer, UJF Cours

  13. LE BULLETIN DE L'EPI N 49 INTELLIGENCE ARTIFICIELLE EN LOGO Un programme d'intelligence artificielle en LOGO

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    Paris-Sud XI, Université de

    198 LE BULLETIN DE L'EPI N° 49 INTELLIGENCE ARTIFICIELLE EN LOGO Un programme d'intelligence artificielle en LOGO LE PROBLÈME DES HUIT REINES Michel DUPONT 1. PRÉSENTATION Certains avantages du LOGO sont. Il est même ainsi possible de créer des sur-langages adaptés à des domaines particuliers. Mais LOGO

  14. EN RIBOFLAVINE DU LAIT DE VACHE 165 30 Le rejet de la peau ))et la formation d'un Il gratin ))sur les

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    Paris-Sud XI, Université de

    EN RIBOFLAVINE DU LAIT DE VACHE 165 30 Le rejet de la « peau ))et la formation d'un Il gratin ))sur les parois du' récipient où le lait a bouilli ne sont pas responsables de pertes de riboflavine

  15. U N I V E R S I T J e a n M o n n e t C e n t r e d e R e c h e r c h e s C r i ti q u e s s u r le D r o i t

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    assurer une bonne ventilation entre le bois et le sol ; du bois de chêne belge (local) et durable (issu

  16. ETUDE DE L'EXPRESSION DES KINASES AURORA DANS LE CARCINOME A CELLULES RENALES

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    Paris-Sud XI, Université de

    ETUDE DE L'EXPRESSION DES KINASES AURORA DANS LE CARCINOME A CELLULES RENALES Romain Mathieu rénales, kinases Aurora, thérapies ciblées, envahissement ganglionnaire Nombre de mots total : 2092 Nombre OF THE EXPRESSION OF AURORA KINASES IN RENAL CELL CARCINOMA Romain Mathieu(a), Jean-Jacques Patard(a,b), Nathalie

  17. epuis la chute de Slobodan Milosevic, le 5 octobre 2000, les Balkans semblaient

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    Boyer, Edmond

    epuis la chute de Slobodan Milosevic, le 5 octobre 2000, les Balkans semblaient entrés dans une çlirimtare kombëtare)1, a resurgi un vocabulaire qu'on pensait disparu avec l'apaisement des Balkans. Il Macédoine naît de la rencontre entre une représentation imaginaire des Balkans peu renouvelée ­ propension à

  18. Building the Santa Fe Artificial Stock Market Blake LeBaron

    E-Print Network [OSTI]

    Tesfatsion, Leigh

    Building the Santa Fe Artificial Stock Market Blake LeBaron Brandeis University June 2002 Abstract This short summary presents an insider's look at the construction of the Santa Fe artificial stock of the directions that researchers have been taking is the use of agent-based financial markets. These "bottom- up

  19. Le Lait, 1988, 68 (2), 143-156 Influence de la temprature de rfrigration du lait

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    Paris-Sud XI, Université de

    - Psychrotrophs- HTST milk - Cooling of milk - Bitterness. Introduction La pratique courante de stocker le lait à and bitterness of HTST milk during storage as a consequence of refrigeration temperature of raw milk Two tests of refrigeration at different temperature levels (3 "C and 8 OC) were carried out on pooled raw milk kept less than

  20. Dividing wall columns for heterogeneous azeotropic distillation Quang-Khoa Le1

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    Skogestad, Sigurd

    Dividing wall columns for heterogeneous azeotropic distillation Quang-Khoa Le1 , Ivar J. Halvorsen2 of this work is to implement heterogeneous azeotropic distillation schemes in a dividing wall column (DWC distillation, Petlyuk arrangement, energy saving. 1. Introduction Distillation is one of the most energy

  1. Un modle de commande pour le contrle des instabilits de combustion

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    Boyer, Edmond

    Un modèle de commande pour le contrôle des instabilités de combustion Landau Ioan-Doré Bouziani pour l'instabilité de combustion. Ce système est analysé en utilisant la méthode de Krylov'analyse sont comparés avec des tests en simulation. Mots-clésmodélisation, instabilité de combustion, systèmes

  2. LE JOURNAL DE PHYSIQUE Generalization of the Fermi-Segr formula

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    Paris-Sud XI, Université de

    1491 LE JOURNAL DE PHYSIQUE Generalization of the Fermi-Segrè formula N. Frôman and P. O. Fröman. 2014 A generalization of the non-relativistic Fermi-Segrè formula into a formula which is valid also. The formula thus obtained, which gives an expression for the limit of u(r)/rl+ 1 as r ~ 0, where u

  3. Contribution du gros intestin la digestion des glucides et des matires azotes chez le monogastrique omnivore

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    Paris-Sud XI, Université de

    Contribution du gros intestin à la digestion des glucides et des matières azotées chez le-en-Josas (France). Summary. Contribution of the large intestine to the digestion of carbohydrates and proteins in omnivorous simple-stomached animals. Owing to its special situation in relation to the rest of the digestive

  4. Digestion des glucides cytoplasmiques de la fverole par le veau prruminant

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    Paris-Sud XI, Université de

    Digestion des glucides cytoplasmiques de la féverole par le veau préruminant J. M. BESLE B. LASSALAS, P. THIVEND Laboratoire de la Digestion des Ruminants, LN.R.A. Theix 63110 Beaumont France. Summary. Digestion of field bean cytoplasmic carbohydrates by the preruminant calf. Three veal calves

  5. Digestion des glucides de la levure d'alcanes par le veau prruminant

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    Paris-Sud XI, Université de

    Digestion des glucides de la levure d'alcanes par le veau préruminant J. M. BESLE, Bernadette LASSALAS, P. THIVEND Laboratoire de la Digestion des Ruminanfs, 1.N.R.A., Theix, 63110 Beaumont France. Summary. Digestion of alkane yeast carbohydrates by the preruminant calf. Four 15-day old preruminant

  6. Systme de rapports d'incidents conforme aux normes ITIL pour le

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    Libre de Bruxelles, Université

    Système de rapports d'incidents conforme aux normes ITIL pour le réseau A.S.T.R.I.D Mémoire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.2 Aper¸cu d'ITIL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.3 Objectifs de ce m´emoire . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 ITIL 4 2.1 Introduction

  7. pour obtenir le grade de Docteur de l'Universit des Antilles et de la Guyane

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    Paris-Sud XI, Université de

    . Néanmoins, des mercis spéciaux à Raphaël Achard le sauveur dégazeur, Philippe Tixier et Pierre Direction du CIRAD m'a également toujours soutenue ; merci en particulier à Jean-Pierre Gaillard, Jacky monde que nous espérons meilleurs : Pierre Beaujard, François Leclant, Daniel Barreteau... Heureusement

  8. ED n431 : ICMS Information, communication, modlisation et simulation pour obtenir le grade de

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    Boyer, Edmond

    . Corinne ROUMES Rapporteur M. Patrick LE CALLET Rapporteur M. Jacques DROULEZ Examinateur M. Jean-Pierre JESSEL Examinateur M. Philippe FUCHS Examinateur M. Guillaume MOREAU Examinateur M. Frédéric ACHARD ses remarques m'a encouragée à être plus précise dans mes futures recherches. · Jean-Pierre Jessel et

  9. A Tutorial on Energy-Based Learning Yann LeCun, Sumit Chopra, Raia Hadsell,

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    LeCun, Yann

    /learning framework, the wide choice of energy func- tions and loss functionals allows for the design of many types as special types of energy-based models in which the energy function satisfies certain normalizabilityA Tutorial on Energy-Based Learning Yann LeCun, Sumit Chopra, Raia Hadsell, Marc'Aurelio Ranzato

  10. A Tutorial on EnergyBased Learning Yann LeCun, Sumit Chopra, Raia Hadsell,

    E-Print Network [OSTI]

    LeCun, Yann

    /learning framework, the wide choice of energy func­ tions and loss functionals allows for the design of many types as special types of energy­based models in which the energy function satisfies certain normalizabilityA Tutorial on Energy­Based Learning Yann LeCun, Sumit Chopra, Raia Hadsell, Marc'Aurelio Ranzato

  11. REMARQUES SUR LE TRAVAIL DE MM. NAGAOKA ET HONDA ; Par M. CH.-D. GUILLAUME

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    Paris-Sud XI, Université de

    633 REMARQUES SUR LE TRAVAIL DE MM. NAGAOKA ET HONDA ; Par M. CH.-ÉD. GUILLAUME Les recherches de MM. Nagaolia et Honda sur la inagnéto- striction donnent lieu à deux genres de remarques : les unes que pour une proportion insignifiante dans les résultats énoncés par MM. Nagaoka et Honda, et que les

  12. Dveloppement du coupleur OASIS4 dans le cadre du projet ANR CICLE

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    Développement du coupleur OASIS4 dans le cadre du projet ANR CICLE - janvier 2009 S. Valcke L plus récente du coupleur OASIS4 qui contient maintenant la recherche globale parallèle des voisins pour l'Education et de la Recherche pour implémenter dans OASIS4 toutes les fonctionnalités permettant de

  13. REGULATION POLITIQUE ET REGULATION D'USAGE DANS LE TEMPS DE TRAVAIL1

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    Paris-Sud XI, Université de

    1 REGULATION POLITIQUE ET REGULATION D'USAGE DANS LE TEMPS DE TRAVAIL1 : par G. de Terssac, J REGULATION AND REGULATION OF USE OVER WORKING TIME In this paper we discuss « social regulations » as defined by Reynaud (1999). These regulations, in our case (working)-time regulations, are multiple. Their combination

  14. Pour obtenir le grade de DOCTEUR DE L'UNIVERSIT DE GRENOBLE

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    : The safety criteria to be met for Generation IV sodium fast reactors (SFR) require redu- ced and mastered;Improvement of Sodium Neutronic Nuclear Data for the Computation of Generation IV Reactors Abstract, Procédés, Production Contribution à l'Amélioration des Données Nucléaires Neutroniques du Sodium pour le

  15. prsente pour obtenir le grade de Docteur de l' cole Nationale Suprieure des Tlcommunications

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Nouveaux Codes Spatio-Temporels pour les Systèmes Ultra Large Bande par Impulsions Jury composé de enthousi- asme et persévérance le développement de ma thèse. Je remercie également Norbert Daniele qui transmissions, most of the existing space-time (ST) coding schemes (the best known ones in any case) can

  16. LE MATERIE PRIME RINNOVABILI E LA TRANSIZIONE DA ECONOMIA DI PRODOTTO AD ECONOMIA DI SISTEMA

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    Genova, Università degli Studi di

    LE MATERIE PRIME RINNOVABILI E LA TRANSIZIONE DA ECONOMIA DI PRODOTTO AD ECONOMIA DI SISTEMA Per aumentando la qualità della vita dei suoi abitanti. Si tratta di favorire la transizione da un'economia di prodotto ad una economia di sistema, un salto culturale verso una sostenibilità economica ed ambientale che

  17. Good Practices as a Quality-Oriented Modeling Vincent Le Gloahec

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    Boyer, Edmond

    Good Practices as a Quality-Oriented Modeling Assistant Vincent Le Gloahec Alkante SAS, France. These good practices are often described in software quality manuals that, in this form, do not guarantee framework enables on the one hand to describe the good practices and on the other hand to check

  18. Franois Beets, Michel Dupuis et Michel Weber (diteurs) La science et le monde moderne

    E-Print Network [OSTI]

    Boyer, Edmond

    François Beets, Michel Dupuis et Michel Weber (éditeurs) La science et le monde moderne d-propos....................................................................................................................... 11 Michel Weber (Louvain-la-Neuve) Foreword.............................................................................................................................. 13 Michel Weber (Louvain-la-Neuve) Lire Science and the Modern World

  19. Active and Passive Learning in Agent-based Financial Markets Blake LeBaron

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    Tesfatsion, Leigh

    markets contain some form of both these types of learning. From what we know so far the dynamics of eachActive and Passive Learning in Agent-based Financial Markets Blake LeBaron International Business of learning which are present in most agent-based financial markets. First, passive learning refers to a form

  20. Restauration de la fertilit pour l'androst-rilit gnocytoplasmique chez le colza (Brassica

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    'androstérilité cytoplasmique découverte par OGURA (1968) chez le radis (Raphanus sativus L., 2 n = 18, génome R) ainsi que la of Raphano-Brassica for restoringfertility of cytoplasmic male sterility transferred from radish (Raphanus sativus L.) to rape (Brassica napus L.) Rape lacks the restorer for cytoplasmic male sterility which

  1. Test de conformit : une approche algbrique Agns Arnould* --Pascale Le Gall**

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    Paris-Sud XI, Université de

    RECHERCHE Test de conformité : une approche algébrique Agnès Arnould* -- Pascale Le Gall** * IRCOM@lami.univ-evry.fr RÉSUMÉ. Nous proposons dans cet article une formalisation du test de conformité contre des spécifications concrétisons les tests abstraits issus des spécifications en tests concrets dans les langages de programmation

  2. Joint Power Management of Memory and Disk Le Cai and Yung-Hsiang Lu

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    Paris-Sud XI, Université de

    Joint Power Management of Memory and Disk Le Cai and Yung-Hsiang Lu School of Electrical to combine memory and power management for achieving better energy reduction. Our method periodically adjusts- tion [4, 21]. However, the close relationship between memory management and power management has

  3. COMPARISON OF NETWORK-BASED MODELS FOR RUBBER ANTOINE GLORIA, PATRICK LE TALLEC, AND MARINA VIDRASCU

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    COMPARISON OF NETWORK-BASED MODELS FOR RUBBER ANTOINE GLORIA, PATRICK LE TALLEC, AND MARINA been proposed to describe rubber elasticity. Recently, Alicandro, Cicalese, and the first author have rigorously derived a continuum theory of rubber elasticity from a discrete model by variational convergence

  4. Innover en formation: Accompagner autrement les enseignants entrant dans le mtier Mars 2012 L'Harmattan

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    Paris-Sud XI, Université de

    Innover en formation: Accompagner autrement les enseignants entrant dans le métier Mars 2012 L'Harmattan Mars 2012 L'Harmattan renforcé entre l'école, l'université et un « collectif » de formation in situ

  5. Computer Science Colloquium Dr. Wei Le is an assistant professor in the

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    Mayfield, John

    Computer Science Colloquium Dr. Wei Le is an assistant professor in the B. Thomas Golisano College.D. in Computer Science from the University of Virginia in 2010. Her research focuses on program analysis and Diagnosis ALL SCIENCE IS COMPUTER SCIENCE #12;

  6. UNIVERSITE DE RENNES 2 Sous le sceau de l`Universit europenne de Bretagne.

    E-Print Network [OSTI]

    Boyer, Edmond

    ­ Humanités et sciences de l'homme PREFICS (EA 3207/UMR 8143) La culture de l'information en reformation Thèse reformation - 2009 tel-00421928,version1-5Oct2009 #12;Le Deuff, Olivier. La culture de linformation en reformation2009 2 Remerciements Mes remerciements vont à tous ceux qui m`ont supporté dans la réalisation de

  7. RF PULSED TESTS ON 3GHZ NIOBIUM CAVITIES J. Le Duff, C. Thomas

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    Paris-Sud XI, Université de

    RF PULSED TESTS ON 3GHZ NIOBIUM CAVITIES J. Le Duff, C. Thomas , G. Bienvenu, H.Sun LAL, Orsay limits have been pushed back thanks to improvements of niobium purity, cavity preparation, as- sembling mT or 50MV/m accelerating field Eacc for TESLA shape bulk niobium (Nb) cavities at T = 0 K

  8. Transformations mtallurgiques accompagnant le rglage du courant critique de microponts de Dayem en film de niobium

    E-Print Network [OSTI]

    Boyer, Edmond

    Dayem en film de niobium Y. Monfort LA 251, I.S.M.Ra, Université de Caen, 14032 Caen Cedex, France D'une couche mince de niobium micro- cristallin déposée sur un substrat de silicium. Une croissance cristalline des grains de niobium, accompagnée d'une contamination par le substrat, apparaît au niveau du

  9. L'IDENTIT AU MIROIR DU DROIT LE STATUT DES PERSONNES EN EGYPTE,

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    Paris-Sud XI, Université de

    L'IDENTITÉ AU MIROIR DU DROIT LE STATUT DES PERSONNES EN EGYPTE, FIN DU XIXe - MILIEU DU XXe SIÈCLE sur les statuts et les identités en Egypte, à l'époque où l'ordre ottoman, fondé sur l'abolition des capitulations (1937), privilèges conférés aux étrangers et devenus insupportables à l'Egypte

  10. Par Odile Faure L'universit de Pau favorise le label

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    Dambrine, Marc

    mission pour la démarche qualité à l'UPPA et Olivier Bessy, directeur du master pro, supervisent la étudiants, cela apporte une attractivité à la formation » estime Olivier Bessy, directeur du master pro. Le

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    Boyer, Edmond

    réflectivité aux rayons X, de la diffraction et aux techniques de rayonne- ment synchrotron. Je voudrais également remercier les responsable de lignes synchrotron pour leur dis- ponibilité et le support technique qu'ils nous ont apportés : ERKO (KMC2, BESSY II), Olivier PROUX (FAME-BM30, ESRF), Olivier MATHON et

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    Paris-Sud XI, Université de

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    Paris-Sud XI, Université de

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