Sample records for ta ta bl

  1. National Aeronautics and Space Administration TA01 TA02 TA03 TA04

    E-Print Network [OSTI]

    Waliser, Duane E.

    Launch/DropSystems · SpaceTetherAssist · BeamedEnergy/Energy Addition · Nuclear · HighEnergyDensity MaterialsFission · BreakthroughPropulsion SuPPoRting technologieS · PropellantStorage&Transfer TA03 · sPace Power & energy storageNational Aeronautics and Space Administration TA01 TA02 TA03 TA04 TA05 TA06 TA07 TA08 s TA01

  2. DUAL MAGNUM COMBINATIONS FOR YELLOW NUTSEDGE (Cyperus esculentus L.) MANAGEMENT IN WEST TEXAS PEANUT. B.L. Porter*, P.A. Dotray, J.W. Keeling, and T.A. Baughman.

    E-Print Network [OSTI]

    Mukhtar, Saqib

    DUAL MAGNUM COMBINATIONS FOR YELLOW NUTSEDGE (Cyperus esculentus L.) MANAGEMENT IN WEST TEXAS PEANUT. B.L. Porter*, P.A. Dotray, J.W. Keeling, and T.A. Baughman. Texas Tech University, Texas Agricultural Experiment Station, Lubbock, and Texas Agricultural Extension Service, Vernon. ABSTRACT Field

  3. TA-55 change control manual

    SciTech Connect (OSTI)

    Blum, T.W.; Selvage, R.D.; Courtney, K.H.

    1997-11-01T23:59:59.000Z

    This manual is the guide for initiating change at the Plutonium Facility, which handles the processing of plutonium as well as research on plutonium metallurgy. It describes the change and work control processes employed at TA-55 to ensure that all proposed changes are properly identified, reviewed, approved, implemented, tested, and documented so that operations are maintained within the approved safety envelope. All Laboratory groups, their contractors, and subcontractors doing work at TA-55 follow requirements set forth herein. This manual applies to all new and modified processes and experiments inside the TA-55 Plutonium Facility; general plant project (GPP) and line item funded construction projects at TA-55; temporary and permanent changes that directly or indirectly affect structures, systems, or components (SSCs) as described in the safety analysis, including Facility Control System (FCS) software; and major modifications to procedures. This manual does not apply to maintenance performed on process equipment or facility SSCs or the replacement of SSCs or equipment with documented approved equivalents.

  4. Memo - Legacy Technical Area (TA)-55 Nitrate Salt Wastes at TA...

    Office of Environmental Management (EM)

    Memo - Legacy Technical Area (TA)-55 Nitrate Salt Wastes at TA-54, Potential Applicability of Resource Conservation and Recovery Act (RCRA) D001D002D003 Waste Codes Memo - Legacy...

  5. Characterization of Rh films on Ta(110)

    SciTech Connect (OSTI)

    Jiang, L.Q.; Ruckman, M.W.; Strongin, M.

    1989-01-01T23:59:59.000Z

    The surface and electronic structure of Rh films on Ta(110) up to several monolayers thick on Ta(110) are characterized by photoemission, Auger emission, low energy electron diffraction and low energy ion scattering. From the variation of the Rh Auger peak-to-peak intensity as a function of evaporation time, Rh/Ta(110) appears to grow in the Stranski-Krastanov mode at room temperature. However, the LEIS data show that the Rh adatoms begin to cluster on Ta(110) before growth of the monolayer is completed. Diffuse LEED scattering suggests that the Rh films are disordered. Photoemission shows that Rh chemisorption on Ta(110) generates two peaks located at 1.2 and 2. 5 eV binding energy during the initial phase of thin film growth (0 < {Theta} < 0.5 ML). By 0.75 ML Rh coverage, those states merge into a broad structure centered near 2 eV binding energy. Photoemission peaks typical of a Rh(111) surface are seen at higher coverages ({Theta} > 3.7 ML). Photoemission data for CO covered surfaces show that CO dissociates on the Rh/Ta(110) surface for Rh coverages less than 2.5 ML and also show that the Rh clusters develop at least one site capable of molecular CO adsorption above 0.3 ML Rh coverage. 38 refs., 5 figs.

  6. 2014/2015 TA Training Program Page 1 of 4 Call for Proposals for 2014/2015 TA Training Programs

    E-Print Network [OSTI]

    Handy, Todd C.

    2014/2015 TA Training Program Page 1 of 4 Call for Proposals for 2014/2015 TA Training Programs, the University is committed to providing educational programs specifically addressing TAs needs. The TA Training for the development, delivery, and assessment of TA training programs. In so doing, we expect a significant increase

  7. e[doxe ta'i aJlivai kaqa; kai; ta'i boula'i-ejpeidh; oiJ Erbitai'oi o{ka to; provteron ta;m

    E-Print Network [OSTI]

    Abbondandolo, Alberto

    e[doxe ta'i aJlivai kaqa; kai; ta'i boula'i- ejpeidh; oiJ Ã?Erbitai'oi o{ka to; provteron taJma'i ta;" creiva" parischmevnwn. e[doxe ta'i aJlivai kaqa; kai; ta'i boula'i- ejpeidh; oiJ Ã?Erbitai'oi o'i povlei ta'i aJma'i ta;" creiva" parischmevnwn. e[doxe ta'i aJlivai kaqa; kai; ta'i boula'i- ejpeidh; oi

  8. Unexpected formation of a trinuclear complex containing a Ta(IV)-Ta(IV) bond in the reactions of ButN=Ta(NMe2)3 with silanes

    SciTech Connect (OSTI)

    Cheng, Shu-Jian [University of Tennessee, Knoxville (UTK); Dougan, Brenda A. [University of Tennessee, Knoxville (UTK); Steren, Carlos A. [University of Tennessee, Knoxville (UTK); Wang, Xiaoping [ORNL; Chen, Xue-Tai [University of Tennessee, Knoxville (UTK); Lin, Zhenyang [University of Tennessee, Knoxville (UTK); Xue, Zi-Ling [University of Tennessee, Knoxville (UTK)

    2011-01-01T23:59:59.000Z

    A new trinuclear species containing a Ta(IV)-Ta(IV) bond, Ta{sub 3}({mu}-H)({mu}-NMe{sub 2})({mu}NBu{sup t}){sub 2}(NBu{sup t})(NMe{sub 2}){sub 5}, has been formed by reductive elimination of H{sub 2}. Ta{sub 2}H{sub 2}({mu}-NMe{sub 2}){sub 2}(NMe{sub 2}){sub 2}(NBu{sup t}){sub 2} has also been isolated. O{sub 2} oxidizes the Ta(IV)-Ta(IV) bond to yield Ta{sub 3}({mu}{sub 3}-O)(H)({mu}NBu{sup t})({mu}-NMe{sub 2}){sub 2}(NMe{sub 2}){sub 4}(NBu{sup t}){sub 2} under ligand exchange. Delocalization of d electrons is discussed.

  9. CRAD, Quality Assurance - Los Alamos National Laboratory TA 55...

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

    Quality Assurance - Los Alamos National Laboratory TA 55 SST Facility CRAD, Quality Assurance - Los Alamos National Laboratory TA 55 SST Facility A section of Appendix C to DOE G...

  10. TA-2 Water Boiler Reactor Decommissioning Project

    SciTech Connect (OSTI)

    Durbin, M.E. (ed.); Montoya, G.M.

    1991-06-01T23:59:59.000Z

    This final report addresses the Phase 2 decommissioning of the Water Boiler Reactor, biological shield, other components within the biological shield, and piping pits in the floor of the reactor building. External structures and underground piping associated with the gaseous effluent (stack) line from Technical Area 2 (TA-2) Water Boiler Reactor were removed in 1985--1986 as Phase 1 of reactor decommissioning. The cost of Phase 2 was approximately $623K. The decommissioning operation produced 173 m{sup 3} of low-level solid radioactive waste and 35 m{sup 3} of mixed waste. 15 refs., 25 figs., 3 tabs.

  11. Microstructure and mechanical properties of Ti-40 wt pct Ta (Ti-15 at. pct Ta)

    SciTech Connect (OSTI)

    Cotton, J.D.; Bingert, J.F.; Dunn, P.S.; Patterson, R.A. (Los Alamos National Lab., NM (United States))

    1994-03-01T23:59:59.000Z

    Of the [beta]-isomorphous Ti-X alloy systems, Ti-Ta is one of the least studied. In the current work, the microstructure and mechanical properties of Ti-40 wt pct Ta (Ti-15 at. pct Ta) are investigated. Annealing at 810 C produces a two-phase microstructure consisting of Ti-rich [alpha] idiomorphs in a continuous Ta-rich [beta] matrix; this suggest the [beta]-transus temperature is higher than indicated by the most recently published phase diagram. Water quenching from 810 C caused the [beta] phase to partially transform to orthorhombic martensite ([alpha][double prime]), while furnace cooling yields secondary [alpha]. The primary [alpha] formed isothermally remains unchanged in both cases. Subsequent aging causes transformation of the martensite to type 1 [alpha] plus residual [beta], with a corresponding increase in strength and decrease in ductility. The maximum ductility (20 pct elongation) occurs in the water-quenched condition in which metastable [beta] is retained. Analysis of the true stress-true strain data suggests that transformation-induced plasticity may contribute to the enhanced ductility of the water-quenched material.

  12. Silver delafossite nitride, AgTaN{sub 2}?

    SciTech Connect (OSTI)

    Miura, Akira [Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen (Germany); Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853 (United States); Lowe, Michael; Leonard, Brian M.; Subban, Chinmayee V. [Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853 (United States); Masubuchi, Yuji; Kikkawa, Shinichi [Graduate School of Engineering, Hokkaido University, N13W8, Kita-ku Sapporo 060-8628 (Japan); Dronskowski, Richard [Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen (Germany); Hennig, Richard G. [Department of Materials Science and Engineering, Cornell University, Ithaca, New York 14853 (United States); Abruna, Hector D. [Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853 (United States); DiSalvo, Francis J., E-mail: fjd3@cornell.ed [Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853 (United States)

    2011-01-15T23:59:59.000Z

    A new silver nitride, AgTaN{sub 2}, was synthesized from NaTaN{sub 2} by a cation-exchange reaction, using a AgNO{sub 3}-NH{sub 4}NO{sub 3} flux at 175 {sup o}C. Its crystal structure type is delafossite (R3-bar m) with hexagonal lattice parameters of a=3.141(3) A, c=18.81(2) A, in which silver is linearly coordinated to nitrogen. Energy dispersive X-ray analysis and combustion nitrogen/oxygen analysis gave a composition with atomic ratios of Ag:Ta:N:O as 1.0:1.2(1):2.1(1):0.77(4), which is somewhat Ta rich and indicates some oxide formation. The X-ray photoelectron spectroscopy analysis showed a Ta- and O-rich surface and transmission electron microscope observation exhibited aggregates of ca. 4-5 nm-sized particles on the surface, which are probably related to the composition deviation from a AgTaN{sub 2}. The lattice parameters of stoichiometric AgTaN{sub 2} calculated by density functional theory agree with the experimental ones, but the possibility of some oxygen incorporation and/or silver deficiency is not precluded. -- Graphical abstract: A delafossite silver nitride, AgTaN{sub 2}, was synthesized from NaTaN{sub 2} by a cation-exchange reaction using a AgNO{sub 3}-NH{sub 4}NO{sub 3} flux. It contains N-Ag-N linear bonding. Display Omitted

  13. TA Position Available Fall Quarter 2014 Immediate Opening

    E-Print Network [OSTI]

    Bogyo, Matthew

    in the development of course and workshop content and materials · Assist with the identification, invitationTA Position Available ­ Fall Quarter 2014 Immediate Opening Career Transitions with facilitation of panel/group discussions · Prepare and distribute marketing materials to departments

  14. TA-53 UNREVIEWED SAFETY ISSUE SCREENING AND DETERMINATION PROCESS

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

    3 UNREVIEWED SAFETY ISSUE SCREENING AND DETERMINATION PROCESS TRAINING WORKSHEET CT-TA53-FRM-505-R00 102011 Page 1 of 3 LA-UR-12-10162 TRAINEE NAME: Z NUMBER: GROUP: PURPOSE AND...

  15. I. Top 20 TA Traps 83 II. Team Meeting Guidelines 85

    E-Print Network [OSTI]

    Minnesota, University of

    Other Teaching Resources Page I. Top 20 TA Traps 83 II. Team Meeting Guidelines 85 III. TA Office I. Top 20 TA Traps This list has been compiled by mentor TAs to help you avoid some common pitfalls of being a TA. These are the top twenty things TAs do that interfere with the work of teaching. General

  16. Resistive switching of a TaO{sub x}/TaON double layer via ionic control of carrier tunneling

    SciTech Connect (OSTI)

    Jeon, Heeyoung; Park, Jingyu; Kim, Hyunjung [Department of Nano-Scale Semiconductor Engineering, Hanyang University, Seoul 133-791 (Korea, Republic of); Jang, Woochool; Song, Hyoseok [Division of Materials Science and Engineering, Hanyang University, Seoul 133-791 (Korea, Republic of); Kang, Chunho [Division of Materials Science and Engineering, Hanyang University, Seoul 133-791 (Korea, Republic of); FAB Manufacturing Division, SK Hynix Inc., 2091, Gyeongchung-daero, Bubal-eub, Icheon-si, Gyeonggi-do 167-701 (Korea, Republic of); Seo, Hyungtak, E-mail: hseo@ajou.ac.kr [Department of Materials Science and Engineering and Department of Energy Systems Research, Ajou University, Suwon 443-739 (Korea, Republic of); Jeon, Hyeongtag, E-mail: hjeon@hanyang.ac.kr [Department of Nano-Scale Semiconductor Engineering, Hanyang University, Seoul 133-791 (Korea, Republic of); Division of Materials Science and Engineering, Hanyang University, Seoul 133-791 (Korea, Republic of)

    2014-04-14T23:59:59.000Z

    Resistance random access memory (RRAM) is an attractive candidate for future non-volatile memory due to its superior features. As the oxide thickness is scaled down, the charge transport mechanism is also subject to the transition from hopping to tunneling dominant process, which is critically related to the interfacial electronic band structure. A TaO{sub x}/TaON double layer-based RRAM is fabricated and characterized in this work. Upon TaON insertion at the lower interface, the improved switching behavior is observed. The TaON at the bottom electrode interface blocks oxygen vacancy percolation due to strong N-O bonds and also modifies interfacial band alignment to lower the injected electron energy from bottom electrode due to higher tunneling barrier height than that of TaO{sub x}/Pt. This study suggested that a defect-minimized insertion layer like TaON with a proper interfacial band alignment is pivotal in RRAM for the effective ionic control of carrier tunneling resulting in non-linear I-V behavior with improved properties.

  17. Evaluation of airflow patterns in 2706-T and 2706-TA

    SciTech Connect (OSTI)

    DEROSA, D.C.

    1999-08-26T23:59:59.000Z

    The purpose of this study was to evaluate the adequacy of the current placement of fixed head air samplers and continuous air monitors (CAMs) in the 2706-T and 2706-TA Complex. The airflow study consisted of 6 configurations of facility HVAC and HEPA filtration equipment to determine impacts on CAM location. The results of this study provide recommendations based on guidance in DOE G 411.1-8 and NUREG-1400 for placement of fixed head air samplers or CAMS within 2706-T and 2706-TA.

  18. Compositional depth profiling of TaCN thin films

    SciTech Connect (OSTI)

    Adelmann, Christoph; Conard, Thierry; Franquet, Alexis; Brijs, Bert; Munnik, Frans; Burgess, Simon; Witters, Thomas; Meersschaut, Johan; Kittl, Jorge A.; Vandervorst, Wilfried; Van Elshocht, Sven [Imec, B-3001 Leuven (Belgium); Forschungszentrum Dresden-Rossendorf, D-01314 Dresden (Germany); Oxford Instruments NanoAnalysis, High Wycombe, HP12 3SE (United Kingdom); Imec, B-3001 Leuven (Belgium); Imec, B-3001 Leuven, Belgium and Instituut voor Kern- en Stralingsfysica, Katholieke Universiteit Leuven, B-3001 Leuven (Belgium); Imec, B-3001 Leuven (Belgium)

    2012-07-15T23:59:59.000Z

    The composition profiling of thin TaCN films was studied. For the composition profile determination using x-ray photoemission spectrometry (XPS) in combination with Ar sputtering, preferential sputtering effects of N with respect to Ta and C were found to lead to inaccurate elemental concentrations. Sputter yield calculations for the given experimental conditions allowed for the correction of a part of the error, leading to fair accuracy by reference-free measurements. Further improvement of the accuracy was demonstrated by the calibration of the XPS compositions against elastic recoil detection analysis (ERDA) results. For Auger electron spectrometry (AES) in combination with Ar sputtering, accurate results required the calibration against ERDA. Both XPS and AES allowed for a reliable and accurate determination of the compositional profiles of TaCN-based thin films after calibration. Time-of-flight secondary-ion mass spectrometry was also used to assess the composition of the TaCN films. However, the analysis was hampered by large matrix effects due to small unintentional oxygen contents in the films. Energy-dispersive x-ray spectrometry is also discussed, and it is shown that an accurate reference-free measurement of the average film concentration can be achieved.

  19. CRAD, Maintenance- Los Alamos National Laboratory TA 55 SST Facility

    Broader source: Energy.gov [DOE]

    A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for an assessment of the Maintenance program at the Los Alamos National Laboratory TA 55 SST Facility.

  20. IWARTIIV IWARIET'TA MARTIN MARIETTA ENERGYSYSTEMS,INC.

    E-Print Network [OSTI]

    Hively, Lee M.

    OAK RIDGE NATIONAL LABORATORY IWARTIIV IWARIET'TA MANAGED BY MARTIN MARIETTA ENERGYSYSTEMS N. E. Clapp C. S. Daw Oak Ridge National Laboratory January 1996 CAUTION This document has not been. Hively N. E. Clapp C. S. Daw Oak Ridge National Laboratory January 1996 Prepared for U.S. Department

  1. Technical Area (TA)-54 Area G Nitrate-Salt Waste Container Response...

    Office of Environmental Management (EM)

    Technical Area (TA)-54 Area G Nitrate-Salt Waste Container Response Instructions Technical Area (TA)-54 Area G Nitrate-Salt Waste Container Response Instructions This document was...

  2. Microstructural Investigations On Ni-Ta-Al Ternary Alloys

    SciTech Connect (OSTI)

    Negache, M. [Laboratoire de Science et Genie des Materiaux Universite of Sciences and Technologies Houari, Boumediene, FGMGP, BP32 El Alia Bab Ezzouar 16111 Algiers (Algeria); Department of Metallurgy, Nuclear Research Center of Algiers, BP 43 Sebala/Draria (Algeria); Taibi, K.; Lounis, Z. [Laboratoire de Science et Genie des Materiaux Universite of Sciences and Technologies Houari, Boumediene, FGMGP, BP32 El Alia Bab Ezzouar 16111 Algiers (Algeria); Souami, N. [Departement of Spetroscopie, Nuclear Research Center of Algiers, 2Bd Frantz Fanon BP399 Algiers (Algeria)

    2010-01-05T23:59:59.000Z

    The Ni-Al-Ta ternary alloys in the Ni-rich part present complex microstructures. They are composed of multiple phases that are formed according to the nominal composition of the alloy, primary Ni(gamma), Ni{sub 3}Al(gamma'), Ni{sub 6}AlTa(tau{sub 3}), Ni{sub 3}Ta(delta) or in equilibrium: two solid phases (gamma'-tau{sub 3}), (tau{sub 3}-delta), (tau{sub 3}-gamma), (gamma-delta) or three solid phases (gamma'-tau{sub 3}-delta). The nature and the volume fraction of these phases give these alloys very interesting properties at high temperature, and this makes them attractive for specific applications. We have developed a series of ternary alloys in electric arc furnace, determining their solidification sequences using Differential Thermal Analysis (DTA), characterized by SEM-EDS, X-ray diffraction and by a microhardness tests. The follow-up results made it possible to make a correlation between the nature of the formed phases and their solidifying way into the Ni{sub 75}Al{sub x}Ta{sub y} (x+y = 25at.%) system, which are varied and complex. In addition to the solid solution Ni (gamma), the formed intermetallics compounds (gamma', tau{sub 3} and delta) has been identified and correlated with a complex balance between phases.We noticed that the hardness increases with the tantalum which has a hardening effect and though the compound Ni{sub 3}Ta(delta) is the hardest. The below results provide a better understanding of the complex microstructure of these alloys.

  3. I. Top 20 TA Traps 129 II. Team Meeting Guidelines 131

    E-Print Network [OSTI]

    Minnesota, University of

    Chapter 5 Other Teaching Resources Page I. Top 20 TA Traps 129 II. Team Meeting Guidelines 131 III for TAs 152 #12;#12;Page 129 I. Top 20 TA Traps This list has been compiled by mentor TAs to help you avoid some common pitfalls of being a TA. These are the top twenty things TAs do that interfere

  4. I. Top 20 TA Traps 129 II. Team Meeting Guidelines 131

    E-Print Network [OSTI]

    Minnesota, University of

    Chapter 5 Other Teaching Resources Page I. Top 20 TA Traps 129 II. Team Meeting Guidelines 131 III for TAs 152 #12;#12;I. Top 20 TA Traps This list has been compiled by mentor TAs to help you avoid some common pitfalls of being a TA. These are the top twenty things TAs do that interfere with the work

  5. Technical Area V (TA-V) transformation project close-out report.

    SciTech Connect (OSTI)

    Not Available

    2010-07-01T23:59:59.000Z

    Sandia National Laboratories (SNL) Technical Area V (TA-V) has provided unique nuclear experimental environments for decades. The technologies tested in TA-V facilities have furthered the United States Nuclear Weapons program and has contributed to the national energy and homeland security mission. The importance of TA-V working efficiently to produce an attractive and effective platform for experiments should not be underestimated. Throughout its brief history, TA-V has evolved to address multiple and diverse sets of requirements. These requirements evolved over many years; however, the requirements had not been managed nor communicated comprehensively or effectively. A series of programmatic findings over several years of external audits was evidence of this downfall. Today, these same requirements flow down through a new TA-V management system that produces consistently applied and reproducible approaches to work practices. In 2008, the TA-V department managers assessed the state of TA-V services and work activities to understand how to improve customer interfaces, stakeholders perceptions, and workforce efficiencies. The TA-V management team initiated the TA-V Transformation Project after they deemed the pre-June 2008 operational model to be ineffective in managing work and in providing integrated, continuous improvement to TA-V processes. This report summarizes the TA-V Transformation Project goals, activities, and accomplishments.

  6. TA-DA: A TOOL FOR ASTROPHYSICAL DATA ANALYSIS

    SciTech Connect (OSTI)

    Da Rio, Nicola [European Space Agency, Keplerlaan 1, 2200-AG Noordwijk (Netherlands); Robberto, Massimo, E-mail: ndario@rssd.esa.int [Space Telescope Science Institute, 3700 San Martin Dr., Baltimore, MD 21218 (United States)

    2012-12-01T23:59:59.000Z

    We present the Tool for Astrophysical Data Analysis (TA-DA), a new software aimed to greatly simplify and improve the analysis of stellar photometric data in comparison with theoretical models, and allow the derivation of stellar parameters from multi-band photometry. Its flexibility allows one to address a number of such problems: from the interpolation of stellar models, or sets of stellar physical parameters in general, to the computation of synthetic photometry in arbitrary filters or units; from the analysis of observed color-magnitude diagrams to a Bayesian derivation of stellar parameters (and extinction) based on multi-band data. TA-DA is available as a pre-compiled Interactive Data Language widget-based application; its graphical user interface makes it considerably user-friendly. In this paper, we describe the software and its functionalities.

  7. Issues for reuse of gloveboxes at LANL TA-55

    SciTech Connect (OSTI)

    Cadwallader, L.C.; Pinson, P.A.; Miller, C.F.

    1998-08-01T23:59:59.000Z

    This report is a summary of issues that face plutonium glovebox designers and users at the Los Alamos National Laboratory (LANL) Technical Area 55 (TA-55). Characterizing the issues is a step in the task of enhancing the next generation glovebox design to minimize waste streams while providing the other design functions. This report gives an initial assessment of eight important design and operation issues that can benefit from waste minimization.

  8. Proton induced fission of 181-Ta at relativistic energies

    E-Print Network [OSTI]

    Y. Ayyad; J. Benlliure; E. Casarejos; H. Álvarez-Pol; A. Bacquias; A. Boudard; M. Caamaño; T. Enqvist; V. Föhr; A. Keli?-Heil; K. Kezzar; S. Leray; C. Paradela; D. Pérez-Loureiro; R. Pleska?; D. Tarrío

    2012-03-07T23:59:59.000Z

    Total fission cross sections of 181-Ta induced by protons at different relativistic energies have been measured at GSI, Darmstadt. The inverse kinematics technique used together with a dedicated set-up, made it possible to determine these cross sections with high accuracy. The new data obtained in this experiment will contribute to the understanding of the fission process at high excitation energies. The results are compared with data from previous experiments and systematics for proton-induced fission cross sections.

  9. TaC Studios New Construction Test House

    SciTech Connect (OSTI)

    Butler, T.; Curtis, O.; Kim, E.; Roberts, S.; Stephenson, R.

    2013-03-01T23:59:59.000Z

    As part of the NAHB Research Center Industry Partnership, Southface partnered with TaC Studios, an Atlanta based architecture firm specializing in residential and light commercial design, on the construction of a new test home in Atlanta, GA in the mixed humid climate zone. This home will serve as a model home for the builder partner and addresses Building America energy savings targets through the planning and implementation of a design package will serve as a basis of design for the builder partner's future homes. As a BA test house, this home will be evaluated to detail whole house energy use, end use loads, and HVAC and hot water efficiency.

  10. I. Top 20 TA Traps 123 II. Team Meeting Guidelines 125

    E-Print Network [OSTI]

    Minnesota, University of

    Chapter 5 Other Teaching Resources Page I. Top 20 TA Traps 123 II. Team Meeting Guidelines 125 III.0.0 143 IX. Useful Information for TAs 147 #12;#12;Page 123 I. Top 20 TA Traps This list has been compiled by mentor TAs to help you avoid some common pitfalls of being a TA. These are the top twenty things TAs do

  11. Morphological instability of Ag films caused by phase transition in the underlying Ta barrier layer

    SciTech Connect (OSTI)

    Mardani, Shabnam, E-mail: shabnam.mardani@angstrom.uu.se; Vallin, Örjan; Wätjen, Jörn Timo; Norström, Hans; Olsson, Jörgen; Zhang, Shi-Li, E-mail: shili.zhang@angstrom.uu.se [Solid State Electronics, The Ångström Laboratory, Uppsala University, P.O. Box 534, SE-75121 (Sweden)

    2014-08-18T23:59:59.000Z

    Wide-bandgap (WBG) semiconductor technologies are maturing and may provide increased device performance in many fields of applications, such as high-temperature electronics. However, there are still issues regarding the stability and reliability of WBG devices. Of particular importance is the high-temperature stability of interconnects for electronic systems based on WBG-semiconductors. For metallization without proper encapsulation, morphological degradation can occur at elevated temperatures. Sandwiching Ag films between Ta and/or TaN layers in this study is found to be electrically and morphologically stabilize the Ag metallization up to 800?°C, compared to 600?°C for uncapped films. However, the barrier layer plays a key role and TaN is found to be superior to Ta, resulting in the best achieved stability, whereas the difference between Ta and TaN caps is negligible. The ?-to-? phase transition in the underlying Ta barrier layer is identified as the major cause responsible for the morphological instability observed above 600?°C. It is shown that this phase transition can be avoided using a stacked Ta/TaN barrier.

  12. Electrochemical and Electrochromic Properties of Nanoworm-shaped Ta2O5-Pt Thin-Films

    SciTech Connect (OSTI)

    Park, K

    2004-05-18T23:59:59.000Z

    A Ta{sub 2}O{sub 5}-Pt nanostructure electrode was fabricated by means of cosputtering. Worm-like Pt nanoparticles were produced in Ta{sub 2}O{sub 5} matrix as observed by transmission electron microscopy (TEM) and small angle x-ray scattering (SAXS). The electrochemical and electrochromic properties of nanoworm-shaped Ta{sub 2}O{sub 5}-Pt electrode are compared with those of Ta{sub 2}O{sub 5} thin-film electrode without Pt nanoparticles.

  13. Poly(ethyleneimine) as a Passivating Agent for Ta Chemical Mechanical Planarization

    E-Print Network [OSTI]

    Suni, Ian Ivar

    enhances the rate of Ta CMP, and in situ studies by electrochemical impedance spectroscopy EIS demonstrate CMP . Studies by electrochemical impedance spectroscopy in a model CMP slurry suggest that PEI forms electrochemistry measurements were performed with a three- electrode setup including a Ta rotating disk electrode

  14. Chemical Concentrations in Field Mice from Open-Detonation Firing Sites TA-36 Minie and TA-39 Point 6 at Los Alamos National Laboratory

    SciTech Connect (OSTI)

    Fresquez, Philip R. [Los Alamos National Laboratory

    2011-01-01T23:59:59.000Z

    Field mice (mostly Peromyscus spp.) were collected at two open-detonation (high explosive) firing sites - Minie at Technical Area (TA) 36 and Point 6 at TA-39 - at Los Alamos National Laboratory in August of 2010 and in February of 2011 for chemical analysis. Samples of whole body field mice from both sites were analyzed for target analyte list elements (mostly metals), dioxin/furans, polychlorinated biphenyl congeners, high explosives, and perchlorate. In addition, uranium isotopes were analyzed in a composite sample collected from TA-36 Minie. In general, all constituents, with the exception of lead at TA-39 Point 6, in whole body field mice samples collected from these two open-detonation firing sites were either not detected or they were detected below regional statistical reference levels (99% confidence level), biota dose screening levels, and/or soil ecological chemical screening levels. The amount of lead in field mice tissue collected from TA-39 Point 6 was higher than regional background, and some lead levels in the soil were higher than the ecological screening level for the field mouse; however, these levels are not expected to affect the viability of the populations over the site as a whole.

  15. Structural studies of the metal-rich region in the ternary Ta-Nb-S system

    SciTech Connect (OSTI)

    Yao, Xiaoqiang.

    1991-10-07T23:59:59.000Z

    Six new solid solution type compounds have been prepared using high temperature techniques and characterized by means of single crystal x-ray techniques during a study of the metal-rich region of the ternary Ta-Nb-S system. The structures of Nb{sub x}Ta{sub 11-x}S{sub 4} are reminiscent of niobium-rich sulfides, rather than of tantalum-rich sulfides. The coordinations of sulfur are capped trigonal prismatic while the metal coordinations are capped distorted cubic prismatic for Nb{sub x}Ta{sub 11-x}S{sub 4}, and capped distorted cubic prismatic and pentagonal prismatic for Nb{sub 12-x}Ta{sub x}S{sub 4}. The structures of Nb{sub x}Ta{sub 5-x}S{sub 2} contain homoatomic layers sequenced S-M3-M2-M1-M2-M3-S (M is mixed Nb, Ta) generating six-layer sheets, respectively. Weak S-S interactions at 3.26 and 3.19{Angstrom} between sheets contrast with the M-M binding within and between the sheets in these two novel layered compounds. The former are presumably responsible for the observed graphitic slippage of the samples. Nb{sub 21-x}Ta{sub x}S{sub 8} and Nb{sub x}Ta{sub 2-x}S are isostructural with Nb{sub 21}S{sub 8} and Ta{sub 2}S, respectively. Extended Hueckel band calculations were carried out for two layered compounds, Nb{sub x}Ta{sub 5-x}S{sub 2} (x {approx} 1.72) and Nb{sub x}ta{sub 2-x}S (x {approx} 0.95). Based upon band calculations metallic properties can be expected for these two layered compounds. The relative preference of the metal sites for the two metal elements (Ta, Nb) in two layered compounds is explained by the results of the band calculations. 17 figs., 31 tabs., 80 refs.

  16. Influence of shockwave obliquity on deformation twin formation in Ta

    SciTech Connect (OSTI)

    Gray, George T., III [Los Alamos National Laboratory; Livescu, V [Los Alamos National Laboratory; Cerreta, E K [Los Alamos National Laboratory; Mason, T A [Los Alamos National Laboratory; Maudlin, P J [RETIRED; Bingert, J F [Los Alamos National Laboratory

    2009-02-18T23:59:59.000Z

    Energetic loading subjects a material to a 'Taylor wave' (triangular wave) loading profile that experiences an evolving balance of hydrostatic (spherical) and deviatoric stresses. While much has been learned over the past five decades concerning the propensity of deformation twinning in samples shockloaded using 'square-topped' profiles as a function of peak stress, achieved most commonly via flyer plate loading, less is known concerning twinning propensity during non-I-dimensional sweeping detonation wave loading. Systematic small-scale energetically-driven shock loading experiments were conducted on Ta samples shock loaded with PEFN that was edge detonated. Deformation twinning was quantified in post-mortem samples as a function of detonation geometry and radial position. In the edge detonated loading geometry examined in this paper, the average volume fraction of deformation twins was observed to drastically increase with increasing shock obliquity. The results of this study are discussed in light of the formation mechanisms of deformation twins, previous literature studies of twinning in shocked materials, and modeling of the effects of shock obliquity on the evolution of the stress tensor during shock loading.

  17. Energy-beam processing studies on Ta/U and Ir/Ta systems. [Laser-and electron-beam melting

    SciTech Connect (OSTI)

    Kaufmann, E.N.; Peercy, P.S.; Jacobson, D.C.; Draper, C.W.; Huegel, F.J.; Echer, C.J.; Makowiecki, D.M.; Balser, J.D.

    1983-11-11T23:59:59.000Z

    Films of Ta metal on uranium and of Ir metal on tantalum have been irradiated and melted by pulses from Q-switched Ruby and frequency-doubled Nd:YAG lasers to investigate the nature of the resulting mixtures in light of the very different binary-phase diagrams of the two systems. In addition, a two-phase Ir-Ta alloy has been surface-processed with CW CO/sub 2/-laser radiation and with an electron beam in order to study microstructure refinement and test the advantage of using alloys as opposed to film-on-substrate combinations for the development of claddings.

  18. Fluoride (F) is not taken up by Salmonella typhimurium TA98 (TA98), used for Ames mutagenicity test, unless aluminum (Al) is present

    SciTech Connect (OSTI)

    Ahn, H.W.; Jeffery, E.H. (Univ. of Illinois, Urbana (United States))

    1991-03-11T23:59:59.000Z

    TA98 is commonly used for the Ames test to detect frame-shift mutations. Ames test results for fluoride mutagenicity are controversial. Since Al and F, both present in finished drinking water, form a stable complex, the authors determined the effect of Al on F uptake by TA98 to evaluate any Al effect on Ames test results for F. A known number of TA98 in 0.1M potassium phosphate buffer was incubated with various concentrations of Al, F or aluminum fluoride for 1 hr at 37C in a shaking incubator. The cells were washed twice in potassium phosphate buffer and then resuspended in water. After breaking the cells open by sonication, the resulting supernatant was analyzed for Al by graphite furnace atomic absorption and for F using a F ion-selective electrode. Al accumulated in a concentration-dependent manner to 4.5 ppm then decreased rapidly as the Al was increased to 9 ppm. Intracellular F was below the limit of detection even when the medium contained 590 ppm F. However, F was taken up from media containing greater than 200 ppm F, providing that aluminum was also present. The authors conclude that the Ames test, using TA98, is not suitable for the detection of F mutagenicity.

  19. Bixbyite- and anatase-type phases in the system Sc-Ta-O-N

    SciTech Connect (OSTI)

    Stork, A.; Schilling, H. [Institut fuer Chemie, TU Berlin, Strasse des 17. Juni 135, D-10623 Berlin (Germany); Wessel, C.; Wolff, H. [Institut fuer Anorganische Chemie, RWTH Aachen, Landoltweg 1, D-52056 Aachen (Germany); Boerger, A. [Institut fuer Physikalische und Theoretische Chemie, TU Braunschweig, Hans-Sommer-Str. 10, D-38106 Braunschweig (Germany); Baehtz, C. [HASYLAB at DESY, Netkestr. 85, D-22603 Hamburg (Germany); Becker, K.-D. [Institut fuer Physikalische und Theoretische Chemie, TU Braunschweig, Hans-Sommer-Str. 10, D-38106 Braunschweig (Germany); Dronskowski, R. [Institut fuer Anorganische Chemie, RWTH Aachen, Landoltweg 1, D-52056 Aachen (Germany); Lerch, M., E-mail: lerch@chem.tu-berlin.d [Institut fuer Chemie, TU Berlin, Strasse des 17. Juni 135, D-10623 Berlin (Germany)

    2010-09-15T23:59:59.000Z

    The aim of our study was to modify the basis compound ss-TaON, which crystallizes in the monoclinic baddeleyite-type, by incorporation of appropriate dopant ions, in order to obtain anion-deficient cubic fluorite-type phases, which are of interest as solids with mobile nitrogen ions. For this purpose, scandium-doped tantalum oxide nitrides were prepared by ammonolysis of amorphous oxide precursors. An unexpected variety of phases with different structural features was observed: bixbyite-type phases of general composition Sc{sub x}Ta{sub 1-x}(O,N){sub y} with 0.33{<=}x{<=}1 and 1.7{<=}y{<=}1.9, yellow colored metastable anatase-type phases such as Sc{sub 0.1}Ta{sub 0.9}O{sub 1.2}N{sub 0.8} or Sc{sub 0.15}Ta{sub 0.85}O{sub 1.3}N{sub 0.7} and, additionally, anosovite-type phases Sc{sub x}Ta{sub 3-x}O{sub 2x}N{sub 5-2x} with 0{<=}x{<=}1.05. Selected phases were investigated by UV/vis spectroscopy. Anatase- and anosovite-type compounds show brilliant colors. In the anatase-type phase, a possible anion ordering was examined by theoretical methods. Additionally, energy calculations on phase stability were performed for Sc{sub x}Ta{sub 1-x}O{sub 1+2x}N{sub 1-2x} in the baddeleyite, rutile, and anatase structure types with varying amounts of dopants. - Graphical abstract: New anatase- and bixbyite-type phases obtained as single-phase samples in the system Sc-Ta-O-N.

  20. Precessional magnetization induced spin current from CoFeB into Ta

    SciTech Connect (OSTI)

    Jamali, Mahdi; Klemm, Angeline; Wang, Jian-Ping, E-mail: jpwang@umn.edu [Department of Electrical and Computer Engineering, University of Minnesota, 4-174 200 Union Street SE, Minneapolis, Minnesota 55455 (United States)] [Department of Electrical and Computer Engineering, University of Minnesota, 4-174 200 Union Street SE, Minneapolis, Minnesota 55455 (United States)

    2013-12-16T23:59:59.000Z

    The spin dynamics at the interface between the CoFeB and Ta layer has been studied using spin pumping and spin wave characterizations. The spin pumping driven by the ferromagnetic resonance in the CoFeB layer injects a spin current into Ta layer which results in an electromotive force across the Ta layer due to the inverse spin Hall effect. Upon changing the polarity of the bias magnetic field, the polarity of the output voltage inverts and the output voltage increases linearly in respect to the microwave signal power which are consistent with the spin pumping characteristics. The effect of the in-plane magnetization angle on the output voltage has been studied. Furthermore, it is found that the frequency spectrum of the spin Hall voltage is modified by the annealing temperature and the full width at half maximum of the spin pumping increases by more than 40% with the increase of the annealing temperature from 200?°C to 300?°C. The spin Hall angle at the Ta-CoFeB interface is determined to be 0.014, and the damping constant of the CoFeB increases from 0.006 in pure CoFeB to 0.015 in Ta/CoFeB film.

  1. Design and evaluation of a novel breast cancer detection system combining both thermoacoustic ,,TA... and photoacoustic ,,PA... tomography

    E-Print Network [OSTI]

    Wang, Lihong

    Design and evaluation of a novel breast cancer detection system combining both thermoacoustic ,,TA thermoacoustic and photoacoustic techniques to achieve dual contrast microwave and light absorption imaging

  2. Role of spin mixing conductance in spin pumping: Enhancement of spin pumping efficiency in Ta/Cu/Py structures

    SciTech Connect (OSTI)

    Deorani, Praveen; Yang, Hyunsoo, E-mail: eleyang@nus.edu.sg [Department of Electrical and Computer Engineering, National University of Singapore, 117576 Singapore (Singapore)] [Department of Electrical and Computer Engineering, National University of Singapore, 117576 Singapore (Singapore)

    2013-12-02T23:59:59.000Z

    From spin pumping measurements in Ta/Py devices for different thicknesses of Ta, we determine the spin Hall angle to be 0.021–0.033 and spin diffusion length to be 8?nm in Ta. We have also studied the effect of changing the properties of non-magnet/ferromagnet interface by adding a Cu interlayer. The experimental results show that the effective spin mixing conductance increases in the presence of Cu interlayer for Ta/Cu/Py devices whereas it decreases in Pt/Cu/Py devices. Our findings allow the tunability of the spin pumping efficiency by adding a thin interlayer at the non-magnet/ferromagnet interface.

  3. The effect of Ta interface on the crystallization of amorphous phase change material thin films

    SciTech Connect (OSTI)

    Ghezzi, G. E. [CEA-LETI, MINATEC campus, 17 rue des Martyrs, F 38054 Grenoble (France); LMGP, CNRS Grenoble-INP, MINATEC, 3 parvis Louis Néel, F 38016 Grenoble (France); Noé, P., E-mail: pierre.noe@cea.fr; Marra, M.; Sabbione, C.; Fillot, F.; Bernier, N.; Ferrand, J.; Maîtrejean, S. [CEA-LETI, MINATEC campus, 17 rue des Martyrs, F 38054 Grenoble (France); Hippert, F. [LMGP, CNRS Grenoble-INP, MINATEC, 3 parvis Louis Néel, F 38016 Grenoble (France); LNCMI (CNRS, UJF, UPS, INSA), 25 rue des Martyrs, F 38042 Grenoble Cedex 9 (France)

    2014-06-02T23:59:59.000Z

    The crystallization of amorphous GeTe and Ge{sub 2}Sb{sub 2}Te{sub 5} phase change material films, with thickness between 10 and 100?nm, sandwiched between either Ta or SiO{sub 2} layers, was investigated by optical reflectivity. Ta cladding layers were found to increase the crystallization temperature, even for films as thick as 100?nm. X-Ray diffraction investigations of crystallized GeTe films showed a very weak texture in Ta cladded films, in contrast with the strong texture observed for SiO{sub 2} cladding layers. This study shows that crystallization mechanism of phase change materials can be highly impacted by interface effects, even for relatively thick films.

  4. Functional and operational requirements for TA-18 relocation to the NTS/DAF Site.

    SciTech Connect (OSTI)

    Malenfant, R. E. (Richard E.); Bedsun, D. A. (David A.); Paternoster, Richard R.,

    2002-01-01T23:59:59.000Z

    Technical Area 18 (TA-18), or Pajarito Site, of the Los Alamos National Laboratory has been operational as a nuclear facility since 1945. The original complement of a dozen part-time researchers with a single mission in one building at the end of a dirt road has evolved to a complex, multimission facility with a staff of 125 occupying 25 major buildings adjacent to a heavily traveled road with public access. In the year 2000, the Secretary of Energy determined that the mission of TA-18 was essential to support national security, but that consideration had to be given to improving safety and physical security. It is presently proposed to relocate most of the TA-18 operations to the Device Assembly Facility (DAF) at the Nevada Test Site (NTS). The purpose of this paper is to identify the functional and operational requirements and to demonstrate how they can be met at the DAF.

  5. TA-55 Final Safety Analysis Report Comparison Document and DOE Safety Evaluation Report Requirements

    SciTech Connect (OSTI)

    Alan Bond

    2001-04-01T23:59:59.000Z

    This document provides an overview of changes to the currently approved TA-55 Final Safety Analysis Report (FSAR) that are included in the upgraded FSAR. The DOE Safety Evaluation Report (SER) requirements that are incorporated into the upgraded FSAR are briefly discussed to provide the starting point in the FSAR with respect to the SER requirements.

  6. High-pressure shock behavior of WC and Ta2O5 powders.

    SciTech Connect (OSTI)

    Knudson, Marcus D. (Sandia National Laboratories, Albuquerque, NM); Reinhart, William Dodd (Sandia National Laboratories, Albuquerque, NM); Vogler, Tracy John; Root, Seth (Sandia National Laboratories, Albuquerque, NM)

    2011-10-01T23:59:59.000Z

    Planar shock experiments were conducted on granular tungsten carbide (WC) and tantalum oxide (Ta{sub 2}O{sub 5}) using the Z machine and a 2-stage gas gun. Additional shock experiments were also conducted on a nearly fully dense form of Ta{sub 2}O{sub 5}. The experiments on WC yield some of the highest pressure results for granular materials obtained to date. Because of the high distention of Ta{sub 2}O{sub 5}, the pressures obtained were significantly lower, but the very high temperatures generated led to large contributions of thermal energy to the material response. These experiments demonstrate that the Z machine can be used to obtain accurate shock data on granular materials. The data on Ta{sub 2}O{sub 5} were utilized in making improvements to the P-{lambda} model for high pressures; the model is found to capture the results not only of the Z and gas gun experiments but also those from laser experiments on low density aerogels. The results are also used to illustrate an approach for generating an equation of state using only the limited data coming from nanoindentation. Although the EOS generated in this manner is rather simplistic, for this material it gives reasonably good results.

  7. taBLe of Contents 2 Find a Job or Internship

    E-Print Network [OSTI]

    Hone, James

    spring 2013 program of events #12;taBLe of Contents 2 Find a Job or Internship 4 All Students, 2013 Deadline to accept internship offers from previous summer internships March 15, 2013 Deadline to accept internship offers received during Spring Semester OCR Employer Info Sessions Employer Info

  8. ACTIVITY, MOVEMENTS, AND FEEDING BEHAVIOR OF THE CUNNER, TA UTOGOLABRUS ADSPERSUS, AND COMPARISON OF

    E-Print Network [OSTI]

    ACTIVITY, MOVEMENTS, AND FEEDING BEHAVIOR OF THE CUNNER, TA UTOGOLABRUS ADSPERSUS, AND COMPARISON providing the nighttime shelter. The fish overwinter within their home territory in a torpid, nonfeeding of young tautog of similar size. 'This work was supported in part by a grant from the U.S. Atomic Energy

  9. GRAIN BOUNDARY EVOLUTION: NEW PERSPECTIVES M. EMELIANENKO, D. GOLOVATY, D. KINDERLEHRER, AND S. TA'ASAN

    E-Print Network [OSTI]

    that they are robust but they are not strongly related to energetics. Recent work has provided us with a new statisticGRAIN BOUNDARY EVOLUTION: NEW PERSPECTIVES M. EMELIANENKO, D. GOLOVATY, D. KINDERLEHRER, AND S. TA boundaries. The energetics and connectivity of the net- work of boundaries are implicated in many properties

  10. CRAD, Criticality Safety- Los Alamos National Laboratory TA 55 SST Facility

    Broader source: Energy.gov [DOE]

    A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for an assessment of the Criticality Safety program at the Los Alamos National Laboratory, TA 55 SST Facility.

  11. CRAD, Radiological Controls- Los Alamos National Laboratory TA 55 SST Facility

    Broader source: Energy.gov [DOE]

    A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for an assessment of the Radiation Protection Program at the Los Alamos National Laboratory TA 55 SST Facility.

  12. CRAD, Occupational Safety & Health- Los Alamos National Laboratory TA 55 SST Facility

    Broader source: Energy.gov [DOE]

    A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for an assessment of the Industrial Hygiene program at the Los Alamos National Laboratory TA 55 SST Facility.

  13. Dig-ta Video, Learn-ng Styes, and Student Understanding of Kinematics Graphs

    E-Print Network [OSTI]

    Zollman, Dean

    Dig-ta Video, Learn-ng Styes, and Student Understanding of Kinematics Graphs Teresa Larkin Video, Learning Styles, and Student Understanding of Kinematics Graphs Introduction Student learning interactive digital video as well preferences and student understanding and their ability to interpret motion

  14. TA Orientation 2004 Activity 5 (2 points). Teaching Discussion Sessions at UMn

    E-Print Network [OSTI]

    Minnesota, University of

    questions and comments (2) The Mentor TA will lead a class discussion about your questions. Write important & Useful Information (one per person) OR of useful information to put on board Photocopies of Answer Sheet) passing out Problem & Useful Information and Answer Sheet. · Students sitting and listening · Students

  15. Phonon and thermal properties of exfoliated TaSe2 thin films T. R. Pope,2

    E-Print Network [OSTI]

    films exfoliated from TaSe2 and other metal dichalcogenides, as well as for evaluating self-heating-Device Laboratory, Department of Electrical Engineering, Bourns College of Engineering, University of California its bulk value of $16 W/mK to $9 W/mK in 45-nm thick films. The measurement of electrical resistivity

  16. Mesoscale Simulation of Grain David Kinderlehrer, Jeehyun Lee, Irene Livshits and Shlomo Ta'asan

    E-Print Network [OSTI]

    Mesoscale Simulation of Grain Growth David Kinderlehrer, Jeehyun Lee, Irene Livshits and Shlomo Ta'asan WILEY-VCH Verlag Berlin GmbH September 4, 2003 #12;2 0.1 Introduction The mesoscale simulation of grain of the statistics it provides, we are led to the companion issue of coarse graining in mesoscale simulations. We

  17. Applied Reactor Physics TA RG E T AU D I E N C E

    E-Print Network [OSTI]

    Meunier, Michel

    Applied Reactor Physics TA RG E T AU D I E N C E Applied Reactor Physics is designed for an audi- ence at the graduate level, without preliminary knowledge of reactor physics. A number of excel- lent courses. Most production codes in reactor physics are accompanied with rather complete theory guides

  18. CLOUD GAMING ONWARD: RESEARCH OPPORTUNITIES AND OUTLOOK Kuan-Ta Chen1

    E-Print Network [OSTI]

    Chen, Sheng-Wei

    CLOUD GAMING ONWARD: RESEARCH OPPORTUNITIES AND OUTLOOK Kuan-Ta Chen1 , Chun-Ying Huang2 ABSTRACT Cloud gaming has become increasingly more popular in the academia and the industry, evident by the large numbers of related research papers and startup companies. Some pub- lic cloud gaming services have

  19. Nanoclustering of hydrogen in ion-implanted and plasma-grown amorphous silicon Debye Institute, Utrecht University, P.O. Box 80000, 3508 TA Utrecht, The Netherlands

    E-Print Network [OSTI]

    Polman, Albert

    Institute, Utrecht University, P.O. Box 80000, 3508 TA Utrecht, The Netherlands D. L. Williamson Department. van der Weg Debye Institute, Utrecht University, P.O. Box 80000, 3508 TA Utrecht, The Netherlands A

  20. Landslides and other mass movements near TA-33, northern White Rock Canyon, New Mexico. Final report

    SciTech Connect (OSTI)

    Dethier, D.P.

    1993-09-01T23:59:59.000Z

    Massive slump complexes and at least two rock avalanches flank the eastern rim of the Pajarito Plateau along northern White Rock Canyon, north of TA-33. Landslides failed along mechanically weak rocks in the Santa Fe Group, within the Puye Formation, or in Pliocene alluvial and lacustrine units. The landslides are mainly of early or middle Pleistocene age. The toe area of at least,one slump complex has been active in the late Pleistocene, damming White Rock Canyon near the mouth of Water Canyon. Lacustrine sediment that filled this lake, or series of lakes, to an elevation of at least 1710 m is preserved at a number of upstream sites, including a deposit near the Buckman townsite that exposes 30 m of lacustrine sediment. Charcoal collected at several sites has been submitted for {sup 14}C dating. Landslides, however, probably do not represent a significant short-term threat to the material disposal areas at TA-33. Bedrock that lies beneath the TA-33 mesa is relatively stable, the mesa shows no signs of incipient failure, and past periods of slide activity were responses to rapid downcutting of the Rio Grande and climate change, probably over periods of several decades, at least. Rockfall and headward erosion of gullies do not represent significant decadal hazards on canyon rims near TA-33. Gully migration near MDA-K is a potential threat, but the gullies were not examined in detail. A system of north-trending faults, at least one of which displays Pleistocene activity, bisects the TA-33 mesa. If these faults are capable of producing significant seismic shaking, generalizations about landslide and rockfall hazards must be reevaluated.

  1. The Use of TaBoRR as a Heavy Oil Upgrader

    SciTech Connect (OSTI)

    Lee Brecher; Charles Mones

    2009-02-05T23:59:59.000Z

    Preliminary testing has shown that Western Research Institute's (WRI) Tank Bottom Recovery and Remediation (TaBoRR{reg_sign}) technology shows promise for heavy oil upgrading. Approximately 70 to 75 wt% of a Canadian Cold Lake bitumen feed was converted to a partially upgraded overhead product that could be transported directly by pipeline or blended with the parent bitumen to produce transportable crude. TaBoRR{reg_sign} was originally developed to remediate tank bottom wastes by producing a distillate product and solid waste. TaBoRR{reg_sign}'s processing steps include breaking a water-oil emulsion, recovering a light hydrocarbon fraction by distillation in a stripper unit, and pyrolyzing the residua reducing it to additional overhead and a benign coke for disposal. Cold Lake bitumen was tested in WRI's bench-scale equipment to evaluate the potential use of TaBoRR{reg_sign} technology for heavy oil upgrading to produce a stable, partially (or fully) upgraded product that will allow diluent-reduced or diluent-free transportation of bitumen or ultra-heavy crudes to market. Runs were conducted at temperatures of low, intermediate and high severity in the stripper to produce stripper overhead and bottoms. The bottoms from each of these runs were processed further in a 6-inch screw pyrolyzer to produce pyrolyzer overhead for blending with the corresponding stripper overheads. Proceeding in this fashion yielded three partially upgraded crudes. The products from TaBoRR{reg_sign} processing, the parent bitumen, and bitumen blends were subjected to stability and compatibility testing at the National Centre for Upgrading Technology (NCUT). Chemical analyses of the overhead product blends have met pipeline specifications for viscosity and density; however the bromine number does not, which might indicate the need for mild hydrotreating. Storage stability tests showed the blends to be stable. The blends were also soluble and compatible with most other Alberta crudes.

  2. Seeking the optimal LaTaO{sub 4}:Eu phosphor

    SciTech Connect (OSTI)

    Bleier, Grant C. [Sandia National Laboratories, P.O. Box 5800, Albuquerque, NM 87185 (United States); Nyman, May, E-mail: mdnyman@sandia.gov [Sandia National Laboratories, P.O. Box 5800, Albuquerque, NM 87185 (United States); Rohwer, Lauren E.S.; Rodriguez, Mark A. [Sandia National Laboratories, P.O. Box 5800, Albuquerque, NM 87185 (United States)

    2011-12-15T23:59:59.000Z

    Lanthanum orthotantalate, LaTaO{sub 4}, is an excellent host lattice for rare-earth luminescent ions such as Eu{sup 3+} for red emission. However, there are multiple RETaO{sub 4} (RE=rare earth) polymorphs, and the stability of these is controlled predominantly by the RE-radius. Thus it is difficult to obtain a pure phase of LaTaO{sub 4}:Eu as Eu concentration and consequently the RE radius is varied. We recently reported a 'soft-chemical' route that allows crystallization of pure-phase LaTaO{sub 4}:Eu at temperatures as low as 800 Degree-Sign C. In the current report, we investigate polymorph evolution and Eu emission as a function of Eu concentration and annealing temperature. We obtain a maximum quantum yield (QY) of 83% at the highest Eu substitution (25%) for which the low temperature orthorhombic (Pbca) polymorph is stable. Therefore, QY is not limited necessarily by concentration quenching; rather it is limited by polymorph stability as the RE-radius decreases with increasing Eu substitution. - Graphical Abstract: Eu-substituted lanthanum orthotantalates, LaTaO{sub 4}:Eu, are excellent red phosphors. They exhibit up to 83% quantum-yield emission under blue light excitation, optimized through both 'soft chemical processing' and polymorph purity. Highlights: Black-Right-Pointing-Pointer LaTaO{sub 4}:Eu phosphors were synthesized via 'soft-chemical' and solid-state routes. Black-Right-Pointing-Pointer Quantum-yield of Eu emission depends on host polymorph, which changes with La:Eu ratio. Black-Right-Pointing-Pointer Polymorph with optimal Eu-emission is only obtained by 'soft-chemistry'.

  3. Solar Energy Materials & Solar Cells 91 (2007) 17261732 Optical and structural properties of Ta2O5CeO2 thin films

    E-Print Network [OSTI]

    Thirumalai, Devarajan

    Solar Energy Materials & Solar Cells 91 (2007) 1726­1732 Optical and structural properties of Ta2O5

  4. Effect of V and Ta on the precipitation behavior of 12%Cr reduced activation ferrite/martensite steel

    SciTech Connect (OSTI)

    Xiao, Xiang [School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083 (China); Liu, Guoquan, E-mail: g.liu@ustb.edu.cn [School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083 (China); State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083 (China); Hu, Benfu; Wang, Jinsan [School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083 (China); Ullah, Asad [School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083 (China); Department of Mathematics, Karakoram International University, Gilgit-Baltistan (Pakistan)

    2013-08-15T23:59:59.000Z

    12%Cr reduced activation ferrite/martensite steels are promising candidate materials for good corrosion and irradiation resistance used for supercritical water-cooled reactor cladding and in-core components. V and Ta are considered to have improved the creep strength of high Cr steels by precipitating as MX phase. In this paper, a series of trial products microalloyed with V and V–Ta are produced, and the microstructure is characterized after quenching at 1050 °C and tempering at 780 °C by using TEM method to investigate the effect of these elements on the precipitation behavior of 12%Cr reduced activation ferrite/martensite steel. The results from both the experimental observations and thermodynamic and kinetic calculations reveal that V and V–Ta can promote the stable MX precipitation instead of M{sub 2}X, thus increasing the volume fraction of M{sub 23}C{sub 6}. Two-phase separation behavior of the (Ta, V)(C, N) carbonitride into a Ta(V)C(N) phase and a V(Ta)N(C) phase in 12Cr3WVTa steel is observed and further discussed. - Highlights: • Microalloyed with V and V-Ta can promote the precipitation of MX instead of M{sub 2}X. • The presence of delta-ferrite in microstructure affects the morphology of MX. • Two-phase separation of MX carbonitride was observed in 12Cr3WVTa steel.

  5. Metallic to hopping conduction transition in Ta{sub 2}O{sub 5?x}/TaO{sub y} resistive switching device

    SciTech Connect (OSTI)

    Zhang, Ye; Deng, Ning; Yu, Zhiping; Zhang, Jinyu [Institute of Microelectronics, Tsinghua University, Beijing 100084 (China); Wu, Huaqiang, E-mail: wuhq@tsinghua.edu.cn; Qian, He [Institute of Microelectronics, Tsinghua University, Beijing 100084 (China); Tsinghua National Laboratory for Information Science and Technology (TNList), Beijing 100084 (China)

    2014-08-11T23:59:59.000Z

    In this Letter, a comprehensive analysis of how the metallic behavior transition to hopping was presented by studying the transport mechanisms of low resistance states (LRS) in Ta{sub 2}O{sub 5?x}/TaO{sub y} resistive switching devices at very low temperatures. Three types of conduction behaviors were reported through temperature-dependent measurements ranging from 5?K to 250?K. Memory cells at low LRS show metallic behavior due to the formation of metallic filament. The temperature dependence of resistance at medium LRS exhibits an interesting phenomenon that a positive temperature coefficient transfers into a negative one at temperature of 20?K. Detailed analysis reveals that this phenomenon is caused by the coexistence of extended and localized states, with metallic conduction at higher temperatures and variable-range hopping at lower temperatures. Carrier transport at high LRS is dominated by electrons hopping conduction with nearest-neighboring hopping conduction changing into variable-range hopping as temperature decreases.

  6. Preliminary results for HIP bonding Ta to W targets for the materials test station

    SciTech Connect (OSTI)

    Dombrowski, David E [Los Alamos National Laboratory; Maloy, Stuart A [Los Alamos National Laboratory

    2009-01-01T23:59:59.000Z

    Tungsten targets for the Materials Test Station (MTS) were clad with thin tantalum cover plates and a tantalum frame using hot isostatic pressing (HIP). A preliminary HIP parameter study showed good bonding and intimate mechanical contact for Ta cover plate thicknesses of 0.25 mm (0.010 inch) and 0.38 mm (0.015 inch). HIP temperatures of full HIP runs were 1500 C (2732 F). HIP pressure was 203 MPa (30 ksi).

  7. The Conversion of CESR to Operate as the Test Accelerator, CesrTA, Part 1: Overview

    E-Print Network [OSTI]

    Billing, M G

    2015-01-01T23:59:59.000Z

    Cornell's electron/positron storage ring (CESR) was modified over a series of accelerator shutdowns beginning in May 2008, which substantially improves its capability for research and development for particle accelerators. CESR's energy span from 1.8 to 5.6 GeV with both electrons and positrons makes it ideal for the study of a wide spectrum of accelerator physics issues and instrumentation related to present light sources and future lepton damping rings. Additionally a number of these are also relevant for the beam physics of proton accelerators. This paper outlines the motivation, design and conversion of CESR to a test accelerator, CesrTA, enhanced to study such subjects as low emittance tuning methods, electron cloud (EC) effects, intra-beam scattering, fast ion instabilities as well as general improvements to beam instrumentation. While the initial studies of CesrTA focussed on questions related to the International Linear Collider (ILC) damping ring design, CesrTA is a very flexible storage ring, capabl...

  8. Structure and physical properties of EuTa{sub 2}O{sub 6} tungsten bronze polymorph

    SciTech Connect (OSTI)

    Kolodiazhnyi, T., E-mail: kolodiazhnyi.taras@nims.go.jp; Sakurai, H.; Vasylkiv, O.; Borodianska, H. [National Institute for Materials Science, Tsukuba, Ibaraki 305-0044 (Japan); Forbes, S.; Mozharivskyj, Y. [Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S4M1 (Canada)

    2014-08-11T23:59:59.000Z

    A tetragonal tungsten bronze (TTB) polymorph of EuTa{sub 2}O{sub 6} was prepared and analyzed. EuTa{sub 2}O{sub 6} crystallizes in the centrosymmetric Pnam space group (with unit cell: a?=?12.3693, b?=?12.4254, and c?=?7.7228?Å) isomorphous with orthorhombic ?-SrTa{sub 2}O{sub 6}. In contrast to early reports, we see no evidence of deviation from paramagnetic Curie-Weiss behavior among the Eu{sup 2+} 4f{sup 7}spins in EuTa{sub 2}O{sub 6} down to 2?K. Dielectric constant shows a broad peak at ca. 50?K with dielectric dispersion resembling diffuse phase transition. The relaxation time, however, follows a simple (non-freezing) thermally activated process with an activation energy of 92?meV and an attempt frequency of f{sub 0}?=?5.79?×?10{sup 12?}Hz. A thermal conductivity of EuTa{sub 2}O{sub 6} shows a low-temperature (T???30?K) “plateau” region reminiscent of a glass-like behaviour in Nb-based TTB compounds. This behaviour can be attributed to the loosely bound Eu{sup 2+} ions occupying large tricapped trigonal prismatic sites in the EuTa{sub 2}O{sub 6} structure.

  9. Direct measurement of isothermal flow stress of metals at elevated temperatures and high strain rates with application to Ta and Ta-W alloys

    SciTech Connect (OSTI)

    Nemat-Nasser, S.; Isaacs, J.B. [Univ. of California, San Diego, La Jolla, CA (United States)] [Univ. of California, San Diego, La Jolla, CA (United States)

    1997-03-01T23:59:59.000Z

    A technique is developed for measuring the flow stress of metals over a broad range of strains, strain rates, and temperatures, in uniaxial compression. It utilizes a recent, enhanced version of the classical (Kolsky) compression split Hopkinson bar, in which a sample is subjected to a single stress pulse of a predefined profile, and then recovered without being subjected to any other additional loading. For the present application, the UCSD`s split Hopkinson bar is further enhanced by the addition of a new mechanism by means of which the incident and transmission bars of the split Hopkinson construction are moved into a constant-temperature furnace containing the sample, and gently brought into contact with the sample, as the elastic stress pulse reaches and loads the sample. Using several samples of the same material and testing them at the same strain rate and temperature, but different incremental strains, an accurate estimate of the material`s isothermal flow stress can be obtained. Additionally, the modified Hopkinson technique allows the direct measurement of the change in the (high strain-rate) flow stress with a change of the strain rate, while the strain and temperature are kept constant, i.e., the strain rate can be increased or decreased during the high strain-rate test. The technique is applied to obtain both quasi-isothermal and adiabatic flow stresses of tantalum (Ta) and a tantalum-tungsten (Ta-W) alloy at elevated temperatures. These experimental results show the flow stress of these materials to be controlled by a simple long-range plastic-strain-dependent barrier, and a short-range thermally activated Peierls mechanism. For tantalum, a model which fits the experimental data over strains from a few to over 100%, strain rates from quasi-static to 40,000/s, and temperatures from {minus}200 to 1,000 C, is presented and discussed.

  10. The high-strain-rate and spallation response of tantalum, Ta-10W, and T-111

    SciTech Connect (OSTI)

    Gray, G.T. III; Rollett, A.D.

    1991-01-01T23:59:59.000Z

    The compressive true stress-true response of tantalum, Ta-10W, and T-111 were found to depend on the applied strain rate, in the range 0.001 to 7000 s{sup {minus}1}. The strain-rate sensitivities of the flow stress of tantalum, Ta-10W, and T-111 a 1% strain are 0.062, 0.031, and 0.024, respectively. The rates of strain hardening in Tantalum, Ta-10W, and T-111 are seen to exhibit differing behavior with increasing strain rate. The calculated average strain-hardening rate in tantalum, {Theta}, for the quasi-static (0.001 s{sup {minus}1}) data at 25{degrees}C is 2080 MPa/unit strain. The hardening rate at 3000s{sup {minus}1} at 25{degrees}C decreases to 846 MPa/unit strain. Normalizing the work hardening rate in tantalum with the Taylor Factor for a random polycrystal, ({Theta} / (3.07){sup 2}), yields work hardening rates of {mu}/276 at quasi-static strain rates and {mu}/680 at high-rates, assuming a shear modulus of 61 GPa for tantalum at room temperature. While the work hardening of all the tantalum-based materials are similar at quasi-static rates, alloying results in a small reduction in hardening rate. With increasing strain rate, the work hardening rate in tantalum decreases by approximately a factor of two compared to the alloys. Alloying tantalum with substitutional or interstitial elements is thought to result in increased edge dislocation storage and screw dislocation cross-slip due to interactions with the alloying elements at high strain rates. 28 refs.

  11. Seismic Vulnerability Assessment Waste Characterization Reduction and Repackaging Building, TA-50-69

    SciTech Connect (OSTI)

    M.W.Sullivan; J.Ruminer; I.Cuesta

    2003-02-02T23:59:59.000Z

    This report presents the results of the seismic structural analyses completed on the Waste Characterization Reduction and Repackaging (WCRR) Building in support of ongoing safety analyses. WCRR is designated as TA-50-69 at Los Alamos National Laboratory, Los Alamos, New Mexico. The facility has been evaluated against Department of Energy (DOE) seismic criteria for Natural Phenomena Hazards (NPH) Performance Category II (PC 2). The seismic capacities of two subsystems within the WCRR building, the material handling glove box and the lift rack immediately adjacent to the Glove Box are also documented, and the results are presented.

  12. Emission patterns of neutral pions in 40 A MeV Ta+Au reactions

    E-Print Network [OSTI]

    K. Piasecki; T. Matulewicz; N. Yahlali; H. Delagrange; J. Díaz; D. G. d'Enterria; F. Fernández; A. Kugler; H. Löhner; G. Martínez-García; R. W. Ostendorf; Y. Schutz; P. Tlustý; R. Turrisi; V. Wagner; H. W. Wilschut

    2010-04-16T23:59:59.000Z

    Differential cross sections of neutral pions emitted in 181Ta + 197Au collisions at a beam energy of 39.5A MeV have been measured with the photon spectrometer TAPS. The kinetic energy and transverse momentum spectra of neutral pions cannot be properly described in the framework of the thermal model, nor when the reabsorption of pions is accounted for in a phenomenological model. However, high energy and high momentum tails of the pion spectra can be well fitted through thermal distributions with unexpectedly soft temperature parameters below 10 MeV.

  13. The effect of Ta on the magnetic thickness of permalloy (Ni{sub 81}Fe{sub 19}) films

    SciTech Connect (OSTI)

    Kowalewski, M. [Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)] [Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States); Butler, W. H. [Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)] [Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States); Moghadam, N. [Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)] [Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States); Stocks, G. M. [Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)] [Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States); Schulthess, T. C. [Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)] [Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States); Song, K. J. [Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)] [Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States); Thompson, J. R. [Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)] [Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States); Arrott, A. S. [Honeywell, Inc., MN14-3C15, 12001 State Highway 55, Plymouth, Minnesota 55441 (United States)] [Honeywell, Inc., MN14-3C15, 12001 State Highway 55, Plymouth, Minnesota 55441 (United States); Zhu, T. [Honeywell, Inc., MN14-3C15, 12001 State Highway 55, Plymouth, Minnesota 55441 (United States)] [Honeywell, Inc., MN14-3C15, 12001 State Highway 55, Plymouth, Minnesota 55441 (United States); Drewes, J. [Honeywell, Inc., MN14-3C15, 12001 State Highway 55, Plymouth, Minnesota 55441 (United States)] (and others) [Honeywell, Inc., MN14-3C15, 12001 State Highway 55, Plymouth, Minnesota 55441 (United States)

    2000-05-01T23:59:59.000Z

    The effect of Ta and Ta/Cu seed layers, and Ta and Cu cap layers on the effective magnetic thickness of ultrathin permalloy (Ni{sub 81}Fe{sub 19}) was investigated for MRAM applications. The films were deposited by Ion Beam Deposition. The magnetic moment of each as-deposited permalloy film was measured using a B-H looper and a SQUID magnetometer. The films were further annealed at either 525 K for 1/2 h or 600 K for 1 h to study the effect of thermally driven interdiffusion on the magnetic moment of the permalloy film. Our theoretical calculations showed that the presence of 12% intermixing at the interface reduces the Ni moments to zero. Experimentally, it was shown that the tantalum rather than the copper interfaces are primarily responsible for the magnetically dead layers. The Ta seed layer interface produces a loss of moment equivalent to a magnetically dead layer of thickness 0.6{+-}0.2 nm. The Ta metal in the cap layer results in a loss of moment equivalent to a dead layer of thickness 1.0{+-}0.2 nm. Upon annealing, thermally driven interdiffusion is concluded to have a strong effect on the Ta(seed)/ Ni{sub 81}Fe{sub 19} as-deposited interface, based on the doubling of the magnetically dead layer to 1.2{+-}0.2 nm. The Ni{sub 81}Fe{sub 19}/Ta(cap) as-deposited interface slightly increases its equivalent magnetically dead layer upon annealing to 1.2{+-}0.2 nm. As-deposited interfaces of Ta(seed)/permalloy and permalloy/Ta(cap) are not chemically equivalent and result in different magnetically dead layers, whereas after annealing to 600 K both interfaces attain comparable intermixing and magnetically dead layers. It was also shown that a half-hour anneal at the lower 525 K annealing temperature, which is closer to the actual processing temperature, results in only slight increase of the magnetically dead layer at both interfaces. (c) 2000 American Institute of Physics.

  14. CHANGES IN THE ELECTRICAL SURFACE CHARGE AND TRANSPLANTATION PROPERTIES OF TA3 ASCITES TUMOR CELLS DURING SHORT-TERM MAINTENANCE IN AN ISOTONIC SALT SOLUTION

    E-Print Network [OSTI]

    Tenforde, T.S.

    2013-01-01T23:59:59.000Z

    CELLS DURING SHORT-TERM MAINTENANCE IN AN ISOTONIC SALTcells. In conclusion, the maintenance of TA3 ascites cellslhort-term tumor cell maintenance in vitro. REFERENCES

  15. A new anatase-type phase in the system Mg-Ta-O-N

    SciTech Connect (OSTI)

    Schilling, H. [Institut fuer Chemie, TU Berlin, Strasse des 17. Juni 135, D-10623 Berlin (Germany); Lerch, M. [Institut fuer Chemie, TU Berlin, Strasse des 17. Juni 135, D-10623 Berlin (Germany)]. E-mail: lerch@chem.tu-berlin.de; Boerger, A. [Institut fuer Physikalische und Theoretische Chemie, TU Braunschweig, Hans-Sommer-Str. 10, D-38106 Braunschweig (Germany); Becker, K.-D. [Institut fuer Physikalische und Theoretische Chemie, TU Braunschweig, Hans-Sommer-Str. 10, D-38106 Braunschweig (Germany); Wolff, H. [Institut fuer Anorganische Chemie, RWTH Aachen, Landoldtweg 1, D-52056 Aachen (Germany); Dronskowski, R. [Institut fuer Anorganische Chemie, RWTH Aachen, Landoldtweg 1, D-52056 Aachen (Germany); Bredow, T. [Theoretische Chemie, Universitaet Hannover, Am Kleinen Felde 30, D-30167 Hannover (Germany); Tovar, M. [Hahn-Meitner-Institut Berlin, Glienicker Str. 100, D-14109 Berlin (Germany); Baehtz, C. [HASYLAB at DESY, Notkestr. 85, D-22603 Hamburg (Germany)

    2006-08-15T23:59:59.000Z

    Magnesium doped tantalum oxynitrides were prepared by ammonolysis of amorphous mixed oxides. An orange colored anatase-type phase with the composition Mg{sub 0.05}Ta{sub 0.95}O{sub 1.15}N{sub 0.85} was found. It is metastable and undergoes a phase transformation to a baddeleyite-type phase between 900 and 1000deg. C. X-ray diffraction measurements indicate spacegroup I4{sub 1}/amd with lattice parameters a=391.986(6)pm and c=1011.19(3)pm. A possible anion ordering was examined by theoretical methods and neutron diffraction experiments. In addition, anosovite-type (Ti{sub 3}O{sub 5}) phases Mg{sub x}Ta{sub 3-x}O{sub 3x}N{sub 5-3x}; 0=

  16. Microstructure and mechanical properties of Ti-35Nb-6Ta alloy after thermomechanical treatment

    SciTech Connect (OSTI)

    Malek, J., E-mail: jardamalek@seznam.cz [UJP PRAHA a.s., Nad Kaminkou 1345, 156 10 Praha-Zbraslav (Czech Republic); CTU in Prague, Faculty of Mechanical Engineering, Department of Materials Science and Engineering, Karlovo Namesti 13, 121 35 Praha 2 (Czech Republic); Hnilica, F.; Vesely, J. [UJP PRAHA a.s., Nad Kaminkou 1345, 156 10 Praha-Zbraslav (Czech Republic); Smola, B. [Charles University in Prague, Faculty of Mathematics and Physics, Department of Physics of Materials, Ke Karlovu 5, 121 16 Praha 2 (Czech Republic); Bartakova, S.; Vanek, J. [St. Anne's University Hospital Brno, Pekarska 53, 656 91 Brno (Czech Republic)

    2012-04-15T23:59:59.000Z

    The influence of thermo-mechanical treatment on microstructure and mechanical properties of T-35Nb-6Ta has been studied. The thermo-mechanical treatment was chosen to correspond to the production of wire with suitable mechanical properties for dental implants. After casting the alloy was hot forged (700-900 Degree-Sign C), solution treated (850 Degree-Sign C/30 min, water quenched) and cold swaged (reductions up to 91%). The annealing (700 Degree-Sign C/3 h/furnace) or aging (450 Degree-Sign C/8 h/furnace) was used as final heat treatment. The microstructure was studied by using light microscopy, scanning electron microscopy, transmission electron microscopy and XRD analysis. Cold swaging introduces microstructure consisting of highly deformed {beta}-phase grains with dislocation tangles and twins, which ensures high tensile strength about 820 MPa, low Young's modulus ({approx} 50 GPa) and good ductility {approx} 10%. Subsequent aging increases tensile strength (1000 MPa) as well as Young's modulus (75 GPa) without diminishing ductility. Annealing at 700 Degree-Sign C slightly decreases tensile strength (730 MPa) and increases the ductility and Young's modulus (17% and 62 GPa respectively). The mechanical properties attained recommend the thermo-mechanical treatment for production of wires for dental implants. - Highlights: Black-Right-Pointing-Pointer Ti35Nb6Ta alloy prepared via arc melting. Black-Right-Pointing-Pointer Thermo mechanical treatment. Black-Right-Pointing-Pointer Microstructural changes. Black-Right-Pointing-Pointer Mechanical properties.

  17. High Nb, Ta, and Al creep- and oxidation-resistant austenitic stainless steel

    DOE Patents [OSTI]

    Brady, Michael P (Oak Ridge, TN) [Oak Ridge, TN; Santella, Michael L (Knoxville, TN) [Knoxville, TN; Yamamoto, Yukinori (Oak Ridge, TN) [Oak Ridge, TN; Liu, Chain-tsuan (Oak Ridge, TN) [Oak Ridge, TN

    2010-07-13T23:59:59.000Z

    An austenitic stainless steel HTUPS alloy includes, in weight percent: 15 to 30 Ni; 10 to 15 Cr; 2 to 5 Al; 0.6 to 5 total of at least one of Nb and Ta; no more than 0.3 of combined Ti+V; up to 3 Mo; up to 3 Co; up to 1 W; up to 0.5 Cu; up to 4 Mn; up to 1 Si; 0.05 to 0.15 C; up to 0.15 B; up to 0.05 P; up to 1 total of at least one of Y, La, Ce, Hf, and Zr; less than 0.05 N; and base Fe, wherein the weight percent Fe is greater than the weight percent Ni wherein said alloy forms an external continuous scale comprising alumina, nanometer scale sized particles distributed throughout the microstructure, said particles comprising at least one composition selected from the group consisting of NbC and TaC, and a stable essentially single phase fcc austenitic matrix microstructure, said austenitic matrix being essentially delta-ferrite-free and essentially BCC-phase-free.

  18. Polytypism, polymorphism, and superconductivity in TaSe2-xTex

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

    Luo, Huixia; Tao, Jing; Xie, Weiwei; Inoue, Hiroyuki; Gyenis, Andras; Krizan, Jason W.; Yazdani, Ali; Zhu, Yimei; Cava, R. J.

    2015-03-17T23:59:59.000Z

    Polymorphism in materials often leads to significantly different physical properties - the rutile and anatase polymorphs of TiO? are a prime example. Polytypism is a special type of polymorphism, occurring in layered materials when the geometry of a repeating structural layer is maintained but the layer stacking sequence of the overall crystal structure can be varied; SiC is an example of a material with many polytypes. Although polymorphs can have radically different physical properties, it is much rarer for polytypism to impact physical properties in a dramatic fashion. Here we study the effects of polytypism and polymorphism on the superconductivitymore »of TaSe?, one of the archetypal members of the large family of layered dichalcogenides. We show that it is possible to access 2 stable polytypes and 2 stable polymorphs in the TaSe2-xTex solid solution, and find that the 3R polytype shows a superconducting transition temperature that is between 6 and 17 times higher than that of the much more commonly found 2H polytype. The reason for this dramatic change is not apparent, but we propose that it arises either from a remarkable dependence of Tc on subtle differences in the characteristics of the single layers present, or from a surprising effect of the layer stacking sequence on electronic properties that instead are expected to be dominated by the properties of a single layer in materials of this kind.« less

  19. High spin states in {sup 175}Ta: An acute example of delayed crossing frequency

    SciTech Connect (OSTI)

    Wen, S.; Zheng, H.; Li, S.; Li, G.; Yuan, G.; Hua, P.; Weng, P.; Zhang, L.; Yu, P.; Yang, C. [China Institute of Atomic Energy, P.O. Box 275, Beijing 102413, People`s Republic of (China)] [China Institute of Atomic Energy, P.O. Box 275, Beijing 102413, People`s Republic of (China); Sun, H.; Liu, Y.; Liu, Y. [Department of Physics, Jilin University, Changchun, Jilin 130023, People`s Republic of (China)] [Department of Physics, Jilin University, Changchun, Jilin 130023, People`s Republic of (China); Sun, Y.; Feng, D.H. [Department of Physics and Atmospheric Science, Drexel University, Philadelphia, Pennsylvania 19104 (United States)] [Department of Physics and Atmospheric Science, Drexel University, Philadelphia, Pennsylvania 19104 (United States)

    1996-09-01T23:59:59.000Z

    High spin states in {sup 175}Ta are populated by the {sup 160}Gd ({sup 19}F,4{ital n}) {sup 175}Ta reaction. This experiment, carried out at the HI-13 tandem accelerator at the China Institute of Atomic Energy which measured the {gamma}-{gamma} coincidences, gives rise to a new level scheme. Two important new features are embedded in this scheme. First, the seven decay sequences built on 1/2 [541], 7/2 [404], 5/2 [402], and 9/2 [514] proton Nilsson configurations are significantly extended to higher spins. For example, for the 1/2 [541] band, the levels have extended from 33/2{sup {minus}} to 61/2{sup {minus}} and, for the 7/2 [404] band, from 21/2{sup {minus}} to 41/2{sup {minus}}. Second, compared to the neighboring even-even nuclides, the neutron {ital AB} crossing frequency built on the {ital h}{sub 9/2} proton Nilsson state 1/2 [541] is significantly larger, which according to the conventional cranking shell model (CSM) is an anomaly. In this paper, this large crossing frequency is also discussed within the framework of the projected shell model. It is shown that this anomaly found in CSM can be satisfactorily explained, thus suggesting an alternative understanding. {copyright} {ital 1996 The American Physical Society.}

  20. The problem of intermixing of metals possessing no mutual solubility upon explosion welding (Cu-Ta, Fe-Ag, Al-Ta)

    SciTech Connect (OSTI)

    Greenberg, B.A., E-mail: bella@imp.uran.ru [Institute of Metal Physics, Ural Branch, Russian Academy of Sciences, S. Kovalevskoi str. 18, Ekaterinburg, 620990 (Russian Federation); Ivanov, M.A. [Kurdyumov Institute of Metal Physics, National Academy of Sciences of Ukraine, Vernadskogo blvd. 36, Kiev, 03680 (Ukraine)] [Kurdyumov Institute of Metal Physics, National Academy of Sciences of Ukraine, Vernadskogo blvd. 36, Kiev, 03680 (Ukraine); Rybin, V.V. [State Polytechnical University, Politekhnicheskaya str. 29, St. Petersburg, 195251 (Russian Federation)] [State Polytechnical University, Politekhnicheskaya str. 29, St. Petersburg, 195251 (Russian Federation); Elkina, O.A.; Antonova, O.V.; Patselov, A.M.; Inozemtsev, A.V.; Plotnikov, A.V.; Volkova, A.Yu. [Institute of Metal Physics, Ural Branch, Russian Academy of Sciences, S. Kovalevskoi str. 18, Ekaterinburg, 620990 (Russian Federation)] [Institute of Metal Physics, Ural Branch, Russian Academy of Sciences, S. Kovalevskoi str. 18, Ekaterinburg, 620990 (Russian Federation); Besshaposhnikov, Yu.P. [OJSC Ural Chemical Machine Building Plant, Khibinogorskii Lane 33, Ekaterinburg, 620010 (Russian Federation)] [OJSC Ural Chemical Machine Building Plant, Khibinogorskii Lane 33, Ekaterinburg, 620010 (Russian Federation)

    2013-01-15T23:59:59.000Z

    On the basis of the results obtained for joints of dissimilar metals such as copper-tantalum and iron-silver, the reason of immiscible suspensions mixing upon explosion welding has been cleared out. It has been found that the interface (plain or wavy) is not smooth and contains inhomogeneities, namely, cusps and local melting zones. The role of granulating fragmentation providing partitioning of initial materials as a main channel of input energy dissipation has been revealed. It has been shown that in joints of metals possessing normal solubility the local melting zones are true solutions, but if metals possess no mutual solubility the local melting zones are colloidal solutions. Realization of either emulsion or suspension variant takes place. The results can be used in the development of new joints of metals possessing no mutual solubility. - Highlights: Black-Right-Pointing-Pointer Immiscible pairs Ta/Cu and Fe/Ag are welded successfully by explosive welding. Black-Right-Pointing-Pointer Fragmentation provides for partitioning as the main energy dissipation channel. Black-Right-Pointing-Pointer Immiscible metals form colloidal solid solutions during solidification. Black-Right-Pointing-Pointer Melting and boiling temperatures ratio determines the colloidal solution type. Black-Right-Pointing-Pointer Local melting zones being in suspension form enhance welds hardening.

  1. Adsorption of CO on Pd/Al2O3/Ta(110) model catalysts D. R. Rainer, M.-C. Wu, D. I. Mahon, and D. W. Goodmana)

    E-Print Network [OSTI]

    Goodman, Wayne

    Adsorption of CO on Pd/Al2O3/Ta(110) model catalysts D. R. Rainer, M.-C. Wu, D. I. Mahon, and D. W October 1995; accepted 22 January 1996 The adsorption of CO on Pd/Al2O3/Ta 110 model catalysts was studied using infrared reflection adsorption spectroscopy IRAS for two different Pd coverages, corresponding

  2. Selective etching of TiN over TaN and vice versa in chlorine-containing Hyungjoo Shin,a)

    E-Print Network [OSTI]

    Economou, Demetre J.

    Selective etching of TiN over TaN and vice versa in chlorine-containing plasmas Hyungjoo Shin 1 April 2013; published 18 April 2013) Selectivity of etching between physical vapor-deposited TiN selectivity of etching TiN over TaN by adding small amounts (

  3. Preparation and characterisation of isotopically enriched Ta$_2$O$_5$ targets for nuclear astrophysics studies

    E-Print Network [OSTI]

    A. Caciolli; D. A. Scott; A. Di Leva; A. Formicola; M. Aliotta; M. Anders; A. Bellini; D. Bemmerer; C. Broggini; M. Campeggio; P. Corvisiero; R. Depalo; Z. Elekes; Zs. Fülöp; G. Gervino; A. Guglielmetti; C. Gustavino; Gy. Gyürky; G. Imbriani; M. Junker; M. Marta; R. Menegazzo; E. Napolitani; P. Prati; V. Rigato; V. Roca; C. Rolfs; C. Rossi Alvarez; E. Somorjai; C. Salvo; O. Straniero; F. Strieder; T. Szücs; F. Terrasi; H. P. Trautvetter; D. Trezzi

    2012-10-01T23:59:59.000Z

    The direct measurement of reaction cross sections at astrophysical energies often requires the use of solid targets of known thickness, isotopic composition, and stoichiometry that are able to withstand high beam currents for extended periods of time. Here, we report on the production and characterisation of isotopically enriched Ta$_2$O$_5$ targets for the study of proton-induced reactions at the Laboratory for Underground Nuclear Astrophysics facility of the Laboratori Nazionali del Gran Sasso. The targets were prepared by anodisation of tantalum backings in enriched water (up to 66% in $^{17}$O and up to 96% in $^{18}$O). Special care was devoted to minimising the presence of any contaminants that could induce unwanted background reactions with the beam in the energy region of astrophysical interest. Results from target characterisation measurements are reported, and the conclusions for proton capture measurements with these targets are drawn.

  4. Preparation and characterisation of isotopically enriched Ta$_2$O$_5$ targets for nuclear astrophysics studies

    E-Print Network [OSTI]

    Caciolli, A; Di Leva, A; Formicola, A; Aliotta, M; Anders, M; Bellini, A; Bemmerer, D; Broggini, C; Campeggio, M; Corvisiero, P; Depalo, R; Elekes, Z; Fülöp, Zs; Gervino, G; Guglielmetti, A; Gustavino, C; Gyürky, Gy; Imbriani, G; Junker, M; Marta, M; Menegazzo, R; Napolitani, E; Prati, P; Rigato, V; Roca, V; Rolfs, C; Alvarez, C Rossi; Somorjai, E; Salvo, C; Straniero, O; Strieder, F; Szücs, T; Terrasi, F; Trautvetter, H P; Trezzi, D

    2012-01-01T23:59:59.000Z

    The direct measurement of reaction cross sections at astrophysical energies often requires the use of solid targets of known thickness, isotopic composition, and stoichiometry that are able to withstand high beam currents for extended periods of time. Here, we report on the production and characterisation of isotopically enriched Ta$_2$O$_5$ targets for the study of proton-induced reactions at the Laboratory for Underground Nuclear Astrophysics facility of the Laboratori Nazionali del Gran Sasso. The targets were prepared by anodisation of tantalum backings in enriched water (up to 66% in $^{17}$O and up to 96% in $^{18}$O). Special care was devoted to minimising the presence of any contaminants that could induce unwanted background reactions with the beam in the energy region of astrophysical interest. Results from target characterisation measurements are reported, and the conclusions for proton capture measurements with these targets are drawn.

  5. Complete genome sequence of Tolumonas auensis type strain (TA 4T)

    SciTech Connect (OSTI)

    Chertkov, Olga; Copeland, Alex; Lucas1, Susa; Lapidus, Alla; Berry, KerrieW.; Detter, JohnC.; Glavina Del Rio, Tijana; Hammon, Nancy; Dalin, Eileen; Tice, Hope; Pitluck, Sam; Richardson, Paul; Bruce, David; Goodwin, Lynne; Han, Cliff; Tapia, Roxanne; Saunders, Elizabeth; Schmutz, Jeremy; Brettin, Thomas; Larimer, Frank; Land, Miriam; Hauser, Loren; Spring, Stefan; Rohde, Manfred; Kyrpides, NikosC.; Ivanova, Natalia; Göker, Markus; Beller, HarryR.; Klenk, Hans-Peter; Woyke, Tanja

    2011-10-04T23:59:59.000Z

    Tolumonas auensis (Fischer-Romero et al. 1996) is currently the only validly named species of the genus Tolumonas in the family Aeromonadaceae. The strain is of interest because of its ability to produce toluene from phenylalanine and other phenyl precursors, as well as phenol from tyrosine. This is of interest because toluene is normally considered to be a tracer of anthropogenic pollution in lakes, but T. auensis represents a biogenic source of toluene. Other than Aeromonas hydrophila subsp. hydrophila, T. auensis strain TA 4T is the only other member in the family Aeromonadaceae with a completely sequenced type-strain genome. The 3,471,292-bp chromosome with a total of 3,288 protein-coding and 116 RNA genes was sequenced as part of the DOE Joint Genome Institute Program JBEI 2008.

  6. Anisotropic Ta{sub 2}O{sub 5} waveguide etching using inductively coupled plasma etching

    SciTech Connect (OSTI)

    Muttalib, Muhammad Firdaus A., E-mail: mfam1g08@ecs.soton.ac.uk; Chen, Ruiqi Y.; Pearce, Stuart J.; Charlton, Martin D. B. [Nano Research Group, Electronics and Computer Science, Faculty of Physical and Applied Sciences, University of Southampton, Southampton SO17 1BJ (United Kingdom)

    2014-07-01T23:59:59.000Z

    Smooth and vertical sidewall profiles are required to create low loss rib and ridge waveguides for integrated optical device and solid state laser applications. In this work, inductively coupled plasma (ICP) etching processes are developed to produce high quality low loss tantalum pentoxide (Ta{sub 2}O{sub 5}) waveguides. A mixture of C{sub 4}F{sub 8} and O{sub 2} gas are used in combination with chromium (Cr) hard mask for this purpose. In this paper, the authors make a detailed investigation of the etch process parameter window. Effects of process parameters such as ICP power, platen power, gas flow, and chamber pressure on etch rate and sidewall slope angle are investigated. Chamber pressure is found to be a particularly important factor, which can be used to tune the sidewall slope angle and so prevent undercut.

  7. Equation-of-State Measurements in Ta2O5 Aerogel

    SciTech Connect (OSTI)

    Miller, J.E.; Boehly, T.R.; Meyerhofer, D.D.; Eggert, J.H.

    2008-01-14T23:59:59.000Z

    Highly porous samples of tantalum pentoxide (Ta2O5) aerogel were compressed from initial densities of 0.1, 0.15, and 0.25 g/cm^3 by shock waves with strengths between 0.3 and 3 Mbar. The compressed material was between 5 and 15 times as dense as the unshocked aerogels with temperatures ~5 eV (~58,000 K). These strong shock loadings were produced by the OMEGA Laser System at the Laboratory of Laser Energetics. The shocked states were diagnosed with the OMEGA velocity interferometer system for any reflector. When the compression measurements are compared to an available high-energy-density equation-of-state model, it is found that the model underestimates the level of compression achieved by shock loading below a Mbar.

  8. Radionuclide contaminant analysis of small mammals at Area G, TA-54, 1994

    SciTech Connect (OSTI)

    Biggs, J.; Bennett, K.; Fresquez, P.

    1995-09-01T23:59:59.000Z

    Small mammals were sampled at two waste burial sites (1 and 2) at Area G, TA-54 and a control site outside Area G (Site 3) to identify radionuclides that are present within surface and subsurface soils at waste burial sites, to compare the amount of radionuclide uptake by small mammals at waste burial sites to a control site, and to identify the primary mode of contamination to small mammals, either through surface contact or ingestion/inhalation. Three composite samples of at least five animals per sample were collected at each site. Pelts and carcasses of each animal were separated and analyzed independently. Samples were analyzed for {sup 241}Am, {sup 90}Sr, {sup 238}Pu, {sup 239}Pu, total U, and gamma spectroscopy (including {sup 137}Cs). Significantly higher (parametric t-test at p = 0.05) levels of total U, {sup 241}Am, {sup 238}Pu, {sup 239}Pu, and {sup 40}K were detected in pelts as compared to the carcasses of small mammals at TA-54. Concentrations of other measured radionuclides in carcasses were nearly equal to or exceeded the mean concentrations in the pelts. The authors results show higher concentrations in pelts compared to carcasses which is similar to what has been found at waste burial/contaminated sites outside of Los Alamos National Laboratory. Site 1 had significantly higher (alpha = 0.05, F = 0.0095) total U concentrations in carcasses than Sites 2 and 3. Site 2 had significantly higher (alpha = 0.05, F = 0.0195) {sup 239}Pu concentrations in carcasses than either Site 1 or Site 3. A significant difference in {sup 90}Sr concentration existed between Sites 1 and 2 (alpha = 0.05, F = 0.0681) and concentrations of {sup 40}K at Site 1 were significantly different from Site 3.

  9. Origin of internal field and visualization of 180 domains in congruent LiTaO3 crystals

    E-Print Network [OSTI]

    Gopalan, Venkatraman

    . Infrared absorption studies suggest that domain inversion as well as the heating of LiTaO3 crystal induce observed a strong correlation between the internal fields and the infrared absorption spectra of OH ions of the infrared absorption bands of OH ions at 3462, 3476, and 3490 cm 1 change, and c the 180° domain walls

  10. Two Particle Azimuthal Correlations in C+Ta Collisions at 4.2A GeV

    SciTech Connect (OSTI)

    Simic, Lj. [Institute of Physics, Belgrade (Serbia and Montenegro); Jotanovic, O. [Faculty of natural science, Banja Luka (Bosnia and Herzegowina)

    2007-04-23T23:59:59.000Z

    In this report we present study of two particle azimuthal correlations for protons and negative pions in 4.2A GeV C+Ta collisions. Obtained results are compared with the analysis of azimuthal distribution of particles with respect to the reaction plane.

  11. Stepping Stone Detection at The Server Side Ruei-Min Lin, Yi-Chun Chou, and Kuan-Ta Chen

    E-Print Network [OSTI]

    Chen, Sheng-Wei

    Stepping Stone Detection at The Server Side Ruei-Min Lin, Yi-Chun Chou, and Kuan-Ta Chen Institute@iis.sinica.edu.tw Abstract--Proxy server was originally invented to enhance the performance of web browsing; however, it has, there is no general method available for detecting the use of stepping stones from the server's perspective

  12. Directed-energy electron-beam processing of a hypoeutectic Cr/sub 90/Ta/sub 10/ alloy

    SciTech Connect (OSTI)

    Huang, J.S.; Kaufmann, E.N.

    1987-09-01T23:59:59.000Z

    A hypoeutectic Cr/sub 90/Ta/sub 10/ alloy was processed using a directed-energy electron-beam surface melting and resolidification technique to study its microstructure evolution during rapid solidification. The power of the electron beam was 2500 W and the scan speed ranged from 0.13 to 2.0 m/sec. Microstructure characteristics such as transitions from planar front to dendritic growth, and from cellular to dendritic growth were observed. At low solidification rate, the interdendritic regions are characterized by the Cr/Cr/sub 2/Ta eutectic, and at high solidification rate the intercellular regions are characterized by a Cr/sub 2/Ta phase. For the latter, the distribution of Ta-solute across the interior of a cell is very uniform. In a given sample, the primary cell spacing increases as the solidification front moves from the substrate/regrowth interface toward the surface. The solidification parameters, i.e., temperature gradient and growth velocity, were determined with finite-element heat flow analyses. The observed microstructure characteristics were correlated to these parameters using available theoretical models. 9 refs., 11 figs., 1 tab.

  13. Printing and Scanning Instructions Printing on Savin (reserved for Job Market/RA/TA print jobs ONLY)

    E-Print Network [OSTI]

    Niebur, Ernst

    1 Printing and Scanning Instructions Printing on Savin (reserved for Job Market/RA/TA print jobs, stapling, or three holes punch, you can find them under the "Layout" tab and "Advanced". #12;2 Scanning on Savin (NOTE: scanning is Free of Charge) A feature of the new copier is the option of using it to scan

  14. Network structure and dynamics of hydrogenated amorphous silicon D.A. Drabold *, T.A. Abtew, F. Inam, Y. Pan

    E-Print Network [OSTI]

    Drabold, David

    upon reasonable calculations of the electron-lattice coupling and molecular dynamic simulationNetwork structure and dynamics of hydrogenated amorphous silicon D.A. Drabold *, T.A. Abtew, F on the network or lattice dynamics of the system, both in the electronic ground state and in an electronic

  15. Application of cluster-plus-glue-atom model to barrierless Cu–Ni–Ti and Cu–Ni–Ta films

    SciTech Connect (OSTI)

    Li, Xiaona, E-mail: lixiaona@dlut.edu.cn; Ding, Jianxin; Wang, Miao; Dong, Chuang [Key Laboratory of Materials Modification by Laser, Ion and Electron Beams (Dalian University of Technology), Ministry of Education, Dalian 116024 (China); Chu, Jinn P. [Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan (China)

    2014-11-01T23:59:59.000Z

    To improve the thermal stability of copper and avoid its diffusion into surrounding dielectrics or interfacial reactions with them, the authors applied the cluster-plus-glue-atom model to investigate barrierless Cu–Ni–M (M?=?Ti or Ta) seed layers. The dissolution of the third element (Ti or Ta) in the Cu lattice with the aid of Ni significantly improved the thermal stability of the Cu seed layer. The appropriate M/Ni (M?=?Ti or Ta) ratio was selected to obtain a low resistivity: the resistivity was as low as 2.5??? cm for the (Ti{sub 1.5/13.5}Ni{sub 12/13.5}){sub 0.3}Cu{sub 99.7} film and 2.8??? cm for the (Ta{sub 1.1/13.1}Ni{sub 12/13.1}){sub 0.4}Cu{sub 99.6} film after annealing at 500?°C for 1?h. After annealing at 500?°C for 40?h, the two films remained stable without forming a Cu{sub 3}Si compound. The authors confirmed that the range of applications of the cluster-plus-glue-atom model could be extended. Therefore, a third element M with negative enthalpies of mixing with both Cu and Ni could be selected, under the premise that the mixing enthalpy of M–Ni is more negative than that of M–Cu.

  16. PROTON SPIN-LATTICE RELAXATION TIME IN THE SUPERCONDUCTING INTERCALATION COMPLEX TaS2(PYRIDINE)1/2

    E-Print Network [OSTI]

    Boyer, Edmond

    L-243 PROTON SPIN-LATTICE RELAXATION TIME IN THE SUPERCONDUCTING INTERCALATION COMPLEX TaS2 bands and superconductivity, and greatly increases the already pronounced anisotropy of the host feature of superconductivity in these complexes is that Tc is strongly affected by the intercalation

  17. A study on in situ growth of TaC whiskers in Al{sub 2}O{sub 3} matrix powder for ceramic cutting tools

    SciTech Connect (OSTI)

    Zhao, Guolong [Centre for Advanced Jet Engineering Technologies (CaJET), School of Mechanical Engineering, Shandong University, Jinan 250061 (China) [Centre for Advanced Jet Engineering Technologies (CaJET), School of Mechanical Engineering, Shandong University, Jinan 250061 (China); Key Laboratory of High-efficiency and Clean Mechanical Manufacture (Shandong University), Ministry of Education (China); Huang, Chuanzhen, E-mail: chuanzhenh@sdu.edu.cn [Centre for Advanced Jet Engineering Technologies (CaJET), School of Mechanical Engineering, Shandong University, Jinan 250061 (China) [Centre for Advanced Jet Engineering Technologies (CaJET), School of Mechanical Engineering, Shandong University, Jinan 250061 (China); Key Laboratory of High-efficiency and Clean Mechanical Manufacture (Shandong University), Ministry of Education (China); Liu, Hanlian; Xu, Liang; Chong, Xuewen; Zou, Bin; Zhu, Hongtao [Centre for Advanced Jet Engineering Technologies (CaJET), School of Mechanical Engineering, Shandong University, Jinan 250061 (China) [Centre for Advanced Jet Engineering Technologies (CaJET), School of Mechanical Engineering, Shandong University, Jinan 250061 (China); Key Laboratory of High-efficiency and Clean Mechanical Manufacture (Shandong University), Ministry of Education (China)

    2012-08-15T23:59:59.000Z

    Graphical abstract: In situ growth of TaC whiskers (TaC{sub w}) was synthesized in an ?-Al{sub 2}O{sub 3} matrix powder via a carbothermal reduction technique. The whiskers were 0.2–0.5 ?m in diameter and 5–15 ?m in length; they were straight and had smooth surfaces. Highlights: ? In situ growth of TaC whiskers was synthesized in an ?-Al{sub 2}O{sub 3} matrix powder. ? The wet mixing method and 1450 °C were suitable for whiskers growth. ? The growth of TaC whiskers is not influenced by the Al{sub 2}O{sub 3} powder. ? The major impurities were TaC particles, nickel and unreacted carbon. -- Abstract: In situ growth of tantalum carbide (TaC) whiskers was synthesized in an ?-Al{sub 2}O{sub 3} matrix powder via a carbothermal reduction technique within a temperature range of 1350–1500 °C in an argon atmosphere. The starting materials consisted of Ta{sub 2}O{sub 5}, C, Ni and NaCl powders. Different mixing methods and various reaction temperatures were employed. Most of the prepared whiskers were 0.2–0.5 ?m in diameter and 5–15 ?m in length. The reaction temperature of 1400–1450 °C was suitable for the growth of TaC whiskers and a wet mixing method was beneficial to increase the whisker yield. Some of the whiskers exhibited the needle shape while others exhibited the screw shape. The growth mechanism of the whiskers was a complex mechanism involving a helical screw dislocation mechanism and a vapor–liquid–solid process. No obvious influences of the Al{sub 2}O{sub 3} matrix powder on the growth of TaC whiskers were found and the major impurities in the obtained powder were TaC particles, nickel and unreacted carbon.

  18. Study of possible systematics in the L*X - Ta* correlation of Gamma Ray Bursts

    E-Print Network [OSTI]

    M. G. Dainotti; V. F. Cardone; S. Capozziello; M. Ostrowski; R. Willingale

    2011-01-09T23:59:59.000Z

    Gamma Ray Bursts (GRBs) are the most energetic sources in the universe and among the farthest known astrophysical sources. These features make them appealing candidates as standard candles for cosmological applications so that studying the physical mechanisms for the origin of the emission and correlations among their observable properties is an interesting task. We consider here the luminosity L*X - break time Ta* (hereafter LT) correlation and investigate whether there are systematics induced by selection effects or redshift dependent calibra- tion. We perform this analysis both for the full sample of 77 GRBs with known redshift and for the subsample of GRBs having canonical X-ray light curves, hereafter called U0095 sample. We do not find any systematic bias thus con- firming the existence of physical GRB subclasses revealed by tight correlations of their afterglow properties. Furthermore, we study the possibility of applying the LT correlation as a redshift estimator both for the full distribution and for the canonical lightcurves. The large uncertainties and the non negligible intrin- sic scatter make the results not so encouraging, but there are nevertheless some hints motivating a further analysis with an increased U0095 sample.

  19. A Quasicontinuum Study of Nanovoid Collapse under Uniaxial Loading in Ta

    SciTech Connect (OSTI)

    Marian, J; Knap, J; Campbell, G

    2007-12-02T23:59:59.000Z

    The mechanisms underlying the deformation of nanovoids in Ta single crystals are analyzed when they are subjected to cyclic uniaxial deformation using numerical simulations. Boundary and cell-size effects have been mitigated by means of the Quasicontinuum (QC) method. We have considered {approx} 1 billion-atom systems containing 10.9 nm voids. Two kinds of simulations have been performed, each characterized by a different boundary condition. First, we compress the material along the nominal [0 0 1] direction, resulting in a highly symmetric configuration that results in high stresses. Second, we load the material along the high-index [{bar 4}819] direction to confine plasticity to a single slip system and break the symmetry. We find that the plastic response under these two conditions is strikingly different, the former governed by dislocation loop emission and dipole formation, while the latter is dominated by twinning. We calculate the irreversible plastic work budget derived from a loading-unloading cycle and identify the most relevant yield points. These calculations represent the first fully three-dimensional, fully non-local simulations of any body-centered cubic metal using QC.

  20. The effect of Ta doping in polycrystalline TiO{sub x} and the associated thin film transistor properties

    SciTech Connect (OSTI)

    Ok, Kyung-Chul, E-mail: kchul2926@naver.com; Park, Yoseb, E-mail: jozeph.park@gmail.com; Park, Jin-Seong, E-mail: kbchung@dankook.ac.kr, E-mail: jsparklime@hanyang.ac.kr [Division of Materials Science and Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 133-791 (Korea, Republic of)] [Division of Materials Science and Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 133-791 (Korea, Republic of); Chung, Kwun-Bum, E-mail: kbchung@dankook.ac.kr, E-mail: jsparklime@hanyang.ac.kr [Department of Physics, Dankook University, 119 Dandae-ro, Dongnam-gu, Cheonan 330-714 (Korea, Republic of)] [Department of Physics, Dankook University, 119 Dandae-ro, Dongnam-gu, Cheonan 330-714 (Korea, Republic of)

    2013-11-18T23:59:59.000Z

    Tantalum (Ta) is suggested to act as an electron donor and crystal phase stabilizer in titanium oxide (TiO{sub x}). A transition occurs from an amorphous state to a crystalline phase at an annealing temperature above 300?°C in a vacuum ambient. As the annealing temperature increases from 300?°C to 450?°C, the mobility increases drastically from 0.07 cm{sup 2}/Vs to 0.61 cm{sup 2}/Vs. The remarkable enhancement of thin film transistor performance is suggested to be due to the splitting of Ti 3d band orbitals as well as the increase in Ta{sup 5+} ions that can act as electron donors.

  1. Floodplain Assessment for the Proposed Outdoor Fire Range Upgrades at TA-72 in Lower Sandia Canyon, Los Alamos National Laboratory

    SciTech Connect (OSTI)

    Hathcock, Charles D. [Los Alamos National Laboratory

    2012-08-27T23:59:59.000Z

    Los Alamos National Laboratory (LANL) is preparing to implement actions in Sandia Canyon at Technical Area (TA) 72. Los Alamos National Security (LANS) biologists conducted a floodplain determination and this project is partially located within a 100-year floodplain. The proposed project is to upgrade the existing outdoor shooting range facilities at TA-72. These upgrades will result in increased safety and efficiencies in the training for Protective Force personnel. In order to remain current on training requirements, the firing ranges at TA-72 will be upgraded which will result in increased safety and efficiencies in the training for Protective Force personnel (Figure 1). These upgrades will allow for an increase in class size and more people to be qualified at the ranges. Some of these upgrades will be built within the 100-year floodplain. The upgrades include: concrete pads for turning target systems and shooting positions, new lighting to illuminate the firing range for night fire, a new speaker system for range operations, canopies at two locations, an impact berm at the far end of the 300-yard mark, and a block wall for road protection.

  2. Selective etching of TiN over TaN and vice versa in chlorine-containing plasmas

    SciTech Connect (OSTI)

    Shin, Hyungjoo; Zhu Weiye; Liu Lei; Sridhar, Shyam; Donnelly, Vincent M.; Economou, Demetre J. [Plasma Processing Laboratory, Department of Chemical and Biomolecular Engineering, University of Houston, Houston, Texas 77204-4004 (United States); Lenox, Chet; Lii, Tom [Texas Instruments Inc., Dallas, Texas 75243 (United States)

    2013-05-15T23:59:59.000Z

    Selectivity of etching between physical vapor-deposited TiN and TaN was studied in chlorine-containing plasmas, under isotropic etching conditions. Etching rates for blanket films were measured in-situ using optical emission of the N{sub 2} (C{sup 3}{Pi}{sub u}{yields}B{sup 3}{Pi}{sub g}) bandhead at 337 nm to determine the etching time, and transmission electron microscopy to determine the starting film thickness. The etching selectivity in Cl{sub 2}/He or HCl/He plasmas was poor (<2:1). There was a window of very high selectivity of etching TiN over TaN by adding small amounts (<1%) of O{sub 2} in the Cl{sub 2}/He plasma. Reverse selectivity (10:1 of TaN etching over TiN) was observed when adding small amounts of O{sub 2} to the HCl/He plasma. Results are explained on the basis of the volatility of plausible reaction products.

  3. A Leader-Follower Algorithm for Multiple AUV Formations D. B. Edwards, T.A. Bean, *D.L. Odell, M.J. Anderson

    E-Print Network [OSTI]

    Idaho, University of

    A Leader-Follower Algorithm for Multiple AUV Formations D. B. Edwards, T.A. Bean, *D.L. Odell, M.5 million square meters of shallow water for mines in Operation Enduring Freedom in Iraq 2003 [1

  4. Radionuclide contaminant analysis of small mammals at Area G, TA-54, Los Alamos National Laboratory, 1995

    SciTech Connect (OSTI)

    Bennett, K.; Biggs, J.; Fresquez, P.

    1997-01-01T23:59:59.000Z

    At Los Alamos National Laboratory, small mammals were sampled at two waste burial sites (Site 1-recently disturbed and Site 2-partially disturbed) at Area G, Technical Area 54 and a control site on Frijoles Mesa (Site 4) in 1995. Our objectives were (1) to identify radionuclides that are present within surface and subsurface soils at waste burial sites, (2) to compare the amount of radionuclide uptake by small mammals at waste burial sites to a control site, and (3) to identify if the primary mode of contamination to small mammals is by surface contact or ingestion/inhalation. Three composite samples of at least rive animals per sample were collected at each site. Pelts and carcasses of each animal were separated and analyzed independently. Samples were analyzed for {sup 241}Am, {sup 90}Sr , {sup 238}Pu, {sup 239}Pu, total U, {sup 137}Cs, and {sup 3}H. Significantly higher (parametric West at p=0.05) levels of total U, {sup 241}Am, {sup 238}Pu and {sup 239}Pu were detected in pelts than in carcasses of small mammals at TA-54. Concentrations of other measured radionuclides in carcasses were nearly equal to or exceeded the mean concentrations in the pelts. Our results show higher concentrations in pelts compared to carcasses, which is similar to what has been found at waste burial/contaminated sites outside of Los Alamos National Laboratory. Site 1 had a significantly higher (alpha=0.05, P=0.0125) mean tritium concentration in carcasses than Site 2 or Site 4. In addition Site 1 also had a significantly higher (alpha=0.05, p=0.0024) mean tritium concentration in pelts than Site 2 or Site 4. Site 2 had a significantly higher (alpha=0.05, P=0.0499) mean {sup 239}Pu concentration in carcasses than either Site 1 or Site 4.

  5. Electron-doping through La{sup III}-for-Sr{sup II} substitution in (Sr{sub 1-} {sub x} La {sub x} ){sub 2}FeTaO{sub 6}: Effects on the valences and ordering of the B-site cations, Fe and Ta

    SciTech Connect (OSTI)

    Rautama, E.-L. [Materials and Structures Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503 (Japan); Laboratory of Inorganic and Analytical Chemistry, Helsinki University of Technology, FIN-02015 HUT (Finland); Chan, T.S. [Department of Chemistry and Center for Nano Storage Research, National Taiwan University, Taipei, (China); Liu, R.S. [Department of Chemistry and Center for Nano Storage Research, National Taiwan University, Taipei, (China); Chen, J.M. [National Synchrotron Radiation Research Center, Hsinchu, (China); Yamauchi, H. [Materials and Structures Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503 (Japan); Karppinen, M. [Materials and Structures Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503 (Japan)]. E-mail: karppinen@msl.titech.ac.jp

    2006-01-15T23:59:59.000Z

    We have employed aliovalent A-site cation substitution, La{sup III}-for-Sr{sup II}, to dope the Sr(Fe{sub 0.5}Ta{sub 0.5})O{sub 3} perovskite oxide with electrons. Essentially single-phase samples of (Sr{sub 1-} {sub x} La {sub x} )(Fe{sub 0.5}Ta{sub 0.5})O{sub 3} were successfully synthesized up to x{approx}0.3 in a vacuum furnace at 1400 deg. C. The samples were found to crystallize (rather than with orthorhombic symmetry) in monoclinic space group P2{sub 1}/n that accounts for the partial ordering of the B-site cations, Fe and Ta. With increasing La-substitution level, x, the degree of Fe/Ta order was found to increase such that the La-richest compositions are best described by the B-site ordered double-perovskite formula (Sr,La){sub 2}FeTaO{sub 6}. From Fe L {sub 3} and Ta L {sub 3} XANES spectra it was revealed that upon electron doping the two B-site cations, Fe{sup III} and Ta{sup V}, are both prone to reduction. Magnetic susceptibility measurements showed spin-glass type behaviour for all the samples with a transition temperature slightly increasing with increasing x. -- Graphical abstract: Valence states of Fe and Ta are controlled in the partially ordered perovskite oxide (Sr,La){sub 2}FeTaO{sub 6}, through aliovalent La{sup III}-for-Sr{sup II} substitu0010ti.

  6. Kinetics of local probe oxidation of ultrathin V, Nb, Ta, Ti, TiN, and W metal films

    SciTech Connect (OSTI)

    Sagunova, I. V., E-mail: pcfme@miee.ru; Shevyakov, V. I.; Gavrilov, S. A.; Belov, A. N. [Moscow Institute of Electronic Technology (Technical University) (Russian Federation)

    2010-12-15T23:59:59.000Z

    The specific features of the kinetics of local probe oxidation of ultrathin V, Nb, Ta, Ti, TiN, and W metal films are studied. It is established that the kinetics of the oxidation process depends on such properties of the material to be oxidized as the resistivity, the presence of a natural surface oxide film and its thickness, the relationship between the densities of the metal and oxide, and the electrochemical constant of the oxidation process. For the material that provides a high efficiency of formation of local insulator nanoregions, vanadium is chosen, since this metal exhibits the maximum rate of anodic probe oxidation.

  7. {delta}{sup 0} resonance production in peripheral 4.2A GeV C+Ta collisions

    SciTech Connect (OSTI)

    Simic, Lj.; Milosavljevic, M. Vranjes; Mendas, I.; Popovic, D. S. [Institute of Physics, University of Belgrade, P. O. Box 68, 11081 Belgrade (Serbia); Krpic, D. [Faculty of Physics, University of Belgrade, P. O. Box 368, 11001 Belgrade (Serbia)

    2009-07-15T23:59:59.000Z

    The production of {delta}{sup 0}(1232){yields}p{pi}{sup -} resonance is studied in peripheral C+Ta collisions at 4.2A GeV using the 2-m propane bubble chamber exposed at JINR Dubna Synchrophasotron. Using an invariant mass distribution of p{pi}{sup -} pairs and additional kinematical constrains, the mass, width, and kinematical characteristics of {delta}{sup 0} resonance are determined. The ratio of the number of pions originated from {delta}{sup 0} resonance decay to the number of all pions (resonant and nonresonant) is estimated. The analogous ratio for protons is also determined.

  8. New high pressure rare earth tantalates RE{sub x}Ta{sub 2}O{sub 5+1.5x} (RE=La, Eu, Yb)

    SciTech Connect (OSTI)

    Zibrov, Igor P., E-mail: zibrov@mail.ru [Institute for High Pressure Physics, Russian Academy of Sciences, Kaluzhskoe Highway 14, Troitsk, Moscow 142190 (Russian Federation); Filonenko, Vladimir P., E-mail: filv@hppi.troitsk.ru [Institute for High Pressure Physics, Russian Academy of Sciences, Kaluzhskoe Highway 14, Troitsk, Moscow 142190 (Russian Federation); Zakharov, Nikolai D., E-mail: zakharov@mpi-halle.mpg.de [Max Planck Institute for Microstructure Physics, Weinberg 2, D-06120 Halle/Saale (Germany); Werner, Peter, E-mail: werner@mpi-halle.mpg.de [Max Planck Institute for Microstructure Physics, Weinberg 2, D-06120 Halle/Saale (Germany); Drobot, Dmitrii V., E-mail: dvdrobot@mail.ru [Lomonosov Moscow University of Fine Chemical Technology, Prospect Vernadskogo 86, Moscow 119571 (Russian Federation); Nikishina, Elena E.; Lebedeva, Elena N., E-mail: helena_nick@mail.ru [Lomonosov Moscow University of Fine Chemical Technology, Prospect Vernadskogo 86, Moscow 119571 (Russian Federation)

    2013-07-15T23:59:59.000Z

    Rare earth tantalates La{sub 0.075}Ta{sub 2}O{sub 5.113}, Eu{sub 0.089}Ta{sub 2}O{sub 5.134} and Yb{sub 0.051}Ta{sub 2}O{sub 5.077} have been prepared by solid state reaction at P=7.0 GPa and T=1050–1100 °C and studied by X-ray diffraction, thermal analysis and electron microscopy. Low hydrated amorphous tantalum, lanthanum, europium and ytterbium hydroxides were used as starting materials. Aqueous as well as anhydrous compounds were obtained. Title tantalates are crystallized in the structure type of F–Ta{sub 2}O{sub 5} [Zibrov et al. Russ. J. Inorg. Chem. 48 (2003) 464–471] [5]. The structure was refined by the Rietveld method from X-ray powder diffractometer data: La{sub 0.075}Ta{sub 2}O{sub 5.113}, a=10.5099(2), b=7.2679(1), c=6.9765(1) Å, V=532.90(1) Å{sup 3}, Z=6, space group Ibam; Eu{sub 0.089}Ta{sub 2}O{sub 5.134}, a=10.4182(3), b=7.2685(1), c=6.9832(1) Å, V=528.80(2) Å{sup 3}, Z=6, space group Ibam; Yb{sub 0.051}Ta{sub 2}O{sub 5.077}, a=10.4557(2), b=7.3853(1), c=6.8923(1) Å, V=532.21(1) Å{sup 3}, Z=6, space group Ibam. RE atoms do not replace the tantalum in its positions but the only water in the channels of the structure. Highly charged cations RE{sup +3} compress the unit cell so that its volume becomes less than that of F–Ta{sub 2}O{sub 5}. Significant decrease of the unit cell volume after water removal from the structure is possible due to the puckering of pentagonal bipyramid layers and change of the corrugation angle in the layer. - Graphical abstract: The structure of RE{sub x}Ta{sub 2}O{sub 5+1.5x} and its HRTEM image (“A” arrows show empty channel, “B” arrows show filled channel). - Highlights: • We synthesized new tantalates of RE under high pressure high temperature conditions. • RE atoms replace water molecules in the channels of the structure. • Aqueous as well as anhydrous tantalates were obtained. • Highly charged cations RE{sup +3} compress the unit cell decreasing RE–O distances.

  9. Floodplain Assessment for the Proposed Engineered Erosion Controls at TA-72 in Lower Sandia Canyon, Los Alamos National Laboratory

    SciTech Connect (OSTI)

    Hathcock, Charles D. [Los Alamos National Laboratory

    2012-08-27T23:59:59.000Z

    Los Alamos National Laboratory (LANL) is preparing to implement engineering controls in Sandia Canyon at Technical Area (TA) 72. Los Alamos National Security (LANS) biologists conducted a floodplain determination and this project is located within a 100-year floodplain. The proposed project is to rehabilitate the degraded channel in lower Sandia Canyon where it crosses through the outdoor firing range at TA-72 to limit the loss of sediment and dissipate floodwater leaving LANL property (Figure 1). The proposed construction of these engineered controls is part of the New Mexico Environment Department's (NMED) approved LANL Individual Storm Water Permit. The purpose of this project is to install storm water controls at Sandia Watershed Site Monitoring Area 6 (S-SMA-6). Storm water controls will be designed and installed to meet the requirements of NPDES Permit No. NM0030759, commonly referred to as the LANL Individual Storm Water Permit (IP). The storm water control measures address storm water mitigation for the area within the boundary of Area of Concern (AOC) 72-001. This action meets the requirements of the IP for S-SMA-6 for storm water controls by a combination of: preventing exposure of upstream storm water and storm water generated within the channel to the AOC and totally retaining storm water falling outside the channel but within the AOC.

  10. Thermal stability of TaSi/sub x/-GaAs Schottky barriers in rapid thermal processing. [Self-aligned gate fabrication of GaAs MESFETs

    SciTech Connect (OSTI)

    Haynes, T.E.; Han, C.C.; Lau, S.S.; Picraux, S.T.; Chu, W.K.

    1987-01-01T23:59:59.000Z

    Co-sputtered TaSi/sub x/ films on GaAs have been examined as potential refractory Schottky barrier contacts suitable for self-aligned gate fabrication of GaAs MESFETs. Thermal stability of electrical and physical characteristics has been studied following furnace annealing and rapid thermal processing of contacts with compositions near Ta/sub 5/Si/sub 3/ (x = 0.6). Assessment of integrity of the annealed contacts has been made based on measurement of electrical characteristics, interface interdiffusion, and evaporation of GaAs through the contact. Superior stability as a function of anneal temperature up to 900/sup 0/C was achieved for TaSi/sub 0.6/ contacts using rapid thermal processing (RTP) techniques rather than furnace annealing. Current-voltage characteristics were found to be insensitive to RTP temperature between 700 and 900/sup 0/C.

  11. Characteristics of phase nucleation and growth during oriented crystallization of alloys of the Si-TaSi/sub 2/ and Si-NbSi/sub 2/ eutectic systems

    SciTech Connect (OSTI)

    Grabovetskaya, G.P.; Butkevich, L.M.

    1987-07-01T23:59:59.000Z

    The authors investigate the effect of the nucleation conditions and the initial concentration of the components on the nature of the change in the phase composition and structure along the length of the directionally crystallized bars of alloys in the Si-TaSi/sub 2/ and Si-NbSi/sub 2/ eutectic systems. The compositions of the investigated alloys are given. The starting materials were silicon of semiconductor purity, tantalum, and niobium produced by electron beam melting. The alloys were crystallized directionally by the Czochralski method. The nature of the structure and the volume ratio of the phases in the investigated alloys depend significantly on the type of seed, i.e., on the nucleation conditions of the eutectic grain. The basic phases in the eutectic alloys of the Si-TaSi/sub 2/ and Si-NbSi/sub 2/ systems are the disilicides TaSi/sub 2/ and NbSi/sub 2/ respectively.

  12. The Role of tantalum in TiC-WC-TaC-Co sintered carbides. II. influence of tantalum content on the structure and properties of TiC-WC-TaC-Co three-phase sintered carbides

    SciTech Connect (OSTI)

    Cheburaeva, R.F.; Chaporova, I.N.

    1986-10-01T23:59:59.000Z

    This work is devoted to a study of the influence of tantalum on the structure and properties of three-phase alloys. The investigations were made with a constant weight ratio of Ti:WC = 35:65% and an unchanged carbon content. The alloys were prepared by mixing of the (T, W, Ta)C carbides with cobalt and tungsten carbide. The pressed specimens were given a preliminary sinter in hydrogen at 923-973 K and a final one in a vacuum furnace at 1773 K. The microstructure, density, and bend and compressive strengths at room and increased temperatures, coeffiecients of cutting life and strength (in comparison with a standard taken as unity), and adhesion interaction were determined. The coefficient of cutting life was determined by transverse machining of steel. The coefficient of strength was determined by the method of breaking feed in milling of 50 steel with a single-tooth cutter. The adhesion interaction of TiC-WC-TaC-Co alloys with the material being machined (50 steel) was determined in vacuum (which eliminated the additional influence of oxidation of the alloy) at 873 K with a load of 1000N. Tantalum carbide additions have a favorable influence on the physicomechanical and service properties of TiC-WC-Co alloys. Their bend strength at room and increased temperatures increases and there is an increase in the total deformation and the work for deformation at increased temperatures, a reduction in oxidation and adhesion interaction with the material being machined, and a significant increase in wear resistance in cutting. Graphs and tables are included.

  13. Ge MOS Characteristics with CVD HfO2 Gate Dielectrics and TaN Gate Electrode W. P. Bai*, N. Lu*, J. Liu*, A. Ramirez**, D. L. Kwong*, D. Wristers**, A. Ritenour#

    E-Print Network [OSTI]

    Ge MOS Characteristics with CVD HfO2 Gate Dielectrics and TaN Gate Electrode W. P. Bai*, N. Lu*, J, we report for the first time Ge MOS characteristics with ultra thin rapid thermal CVD HfO2 gate dielectrics and TaN gate electrode. Using the newly developed pre- gate cleaning and NH3-based Ge surface

  14. Two-particle azimuthal correlations in 4.2A GeV C+Ta collisions

    SciTech Connect (OSTI)

    Simic, Lj.; Mendas, I. [Institute of Physics, P.O. Box 68, 11081 Belgrade, Serbia (Serbia and Montenegro); Jotanovic, O. [Faculty of Natural Science, Banja Luka (Bosnia and Herzegowina); Milosevic, J. [Department of Physics, University of Oslo, Oslo (Norway)

    2007-10-15T23:59:59.000Z

    Two particle azimuthal correlations are studied in 4.2A GeV C+Ta collisions observed with the 2-m propane bubble chamber exposed at JINR Dubna Synchrophasotron. The correlations are analyzed both for protons and negative pions, and their dependence on the collision centrality, rapidity and rapidity difference is investigated. It is found that protons show a weak back-to-back correlations, while a side-by-side correlations are observed for negative pions. Restricting both protons to the target or projectile fragmentation region, the side-by-side correlations are observed for protons also. Using the two particle correlation function, the flow analysis is performed and intensity of directed flow is determined without event-by event estimation of the reaction plane.

  15. Ultrafast transmission electron microscopy on dynamic process of a CDW transition in 1T-TaSe2

    E-Print Network [OSTI]

    Sun, Shuaishuai; Li, Zhongwen; Cao, Gaolong; Liu, Y; Lu, W J; Sun, Y P; Tian, Huanfang; HuaixinYang,; Li, Jianqi

    2015-01-01T23:59:59.000Z

    Four-dimensional ultrafast transmission electron microscopy (4D-UTEM) measurements reveal a rich variety of structural dynamic phenomena at a phase transition in the charge-density-wave (CDW) 1T-TaSe2. Through the photoexcitation, remarkable changes on both the CDW intensity and orientation are clearly observed associated with the transformation from a commensurate (C) into an incommensurate (IC) phase in a time-scale of about 3 ps. Moreover, the transient states show up a notable "structurally isosbestic point" at a wave vector of qiso where the C and IC phases yield their diffracting efficiencies in an equally ratio. This fact demonstrates that the crystal planes parallel to qiso adopts visibly common structural features in these two CDW phases. The second-order characters observed in this nonequilibrium phase transition have been also analyzed based on the time-resolved structural data.

  16. Building America Case Study: Ground Source Heat Pump Research, TaC Studios Residence, Atlanta, Georigia (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2014-09-01T23:59:59.000Z

    As part of the NAHB Research Center Industry Partnership, Southface partnered with TaC Studios, an Atlanta based architecture firm specializing in residential and light commercial design, on the construction of a new test home in Atlanta, GA in the mixed-humid climate. This home serves as a residence and home office for the firm's owners, as well as a demonstration of their design approach to potential and current clients. Southface believes the home demonstrates current best practices for the mixed-humid climate, including a building envelope featuring advanced air sealing details and low density spray foam insulation, glazing that exceeds ENERGY STAR requirements, and a high performance heating and cooling system. Construction quality and execution was a high priority for TaC Studios and was ensured by a third party review process. Post construction testing showed that the project met stated goals for envelope performance, an air infiltration rate of 2.15 ACH50. The homeowner's wished to further validate whole house energy savings through the project's involvement with Building America and this long-term monitoring effort. As a Building America test home, this home was evaluated to detail whole house energy use, end use loads, and the efficiency and operation of the ground source heat pump and associated systems. Given that the home includes many non-typical end use loads including a home office, pool, landscape water feature, and other luxury features not accounted for in Building America modeling tools, these end uses were separately monitored to determine their impact on overall energy consumption.

  17. Activation cross sections of $?$-particle induced nuclear reactions on hafnium and deuteron induced nuclear reaction on tantalum: production of $^{178}$W/$^{178m}$Ta generator

    E-Print Network [OSTI]

    F. Tárk'anyi; S. Tak'acs; F. Ditrói; A. Hermanne; A. V. Ignatyuk; M. S. Uddin

    2014-12-01T23:59:59.000Z

    In the frame of a systematic study of charged particle production routes of medically relevant radionuclei, the excitation function for indirect production of $^{178m}$Ta through $^{nat}$Hf($\\alpha$,xn)$^{178}$W-$^{178m}$Ta nuclear reaction was measured for the first time up to 40 MeV. In parallel, the side reactions $^{nat}$Hf($\\alpha$,x)$^{179,177,176,175}$W, $^{183,182,178g,177,176,175}$Ta, $^{179m,177m,175}$Hf were also assessed. Stacked foil irradiation technique and $\\gamma$-ray spectrometry were used. New experimental cross section data for the $^{nat}$Ta(d,xn)$^{178}$W reaction are also reported up to 40 MeV. The measured excitation functions are compared with the results of the ALICE-IPPE, and EMPIRE nuclear reaction model codes and with the TALYS 1.4 based data in the TENDL-2013 library. The thick target yields were deduced and compared with yields of other charged particle ((p,4n), (d,5n) and ($^3$He,x)) production routes for $^{178}$W.

  18. Synthesis, Exfoliation, and Electronic/Protonic Conductivity of the Dion-Jacobson Phase Layer Perovskite HLa2TiTa2O10

    E-Print Network [OSTI]

    Synthesis, Exfoliation, and Electronic/Protonic Conductivity of the Dion-Jacobson Phase Layer-based method. When prepared by the precursor method, HLa2Ti2TaO10·nH2O (n = 1-2) could be exfoliated

  19. Proton-Conducting Films of Nanoscale Ribbons Formed by Exfoliation of the Layer Perovskite H2SrTa2O7

    E-Print Network [OSTI]

    Proton-Conducting Films of Nanoscale Ribbons Formed by Exfoliation of the Layer Perovskite H2SrTa2OTa2O7 were grown and characterized as solid-state proton conductors. The ribbons, made by exfoliation membranes made from layered materials such as exfoliated zirconium phosphate.12 Unfortunately, the proton

  20. R E S E A R C H L E T T E R Toxin^antitoxin (TA) systems are prevalent and transcribed

    E-Print Network [OSTI]

    Hergenrother, Paul J.

    problematic hospital and community- acquired pathogens are methicillin-resistant Staphylococcus aureus (MRSA bacteria; however, the prevalence and identity of TA systems in clinical isolates of MRSA and PA has not been defined. We isolated DNA from 78 MRSA and 42 PA clinical isolates and used PCR to probe

  1. PROJECT SUMMARY Many metals, such as the rare earth elements, Nb, Ta, Ge, In, Ga...are finding new applications both

    E-Print Network [OSTI]

    Canet, Léonie

    PROJECT SUMMARY Many metals, such as the rare earth elements, Nb, Ta, Ge, In, Ga...are finding new years ago access to natural metal resources, which were both abundant and easily accessible, caused of geologic context, metal concentration in rocks, separation and concentration techniques, and recycling

  2. 13.21 Geochemistry of the Rare-Earth Element, Nb, Ta, Hf, and Zr Deposits RL Linnen, University of Western Ontario, London, ON, Canada

    E-Print Network [OSTI]

    Chakhmouradian, Anton

    13.21 Geochemistry of the Rare-Earth Element, Nb, Ta, Hf, and Zr Deposits RL Linnen, University of rare metals in natural fluids 551 13.21.2.2.2 Aqueous complexation and mineral solubility 552 13 Acknowledgments 564 References 564 13.21.1 Introduction Rare-element mineral deposits, also called rare-metal

  3. Stabilization of ordered zirconium titanates through the chemical substitution of Ti[sup 4+] by Al[sup 3+]/Ta[sup 5+

    SciTech Connect (OSTI)

    Zhang, Yan; Davies, P.K. (Univ. of Pennsylvania, Philadelphia, PA (United States). Dept. of Materials Science and Engineering)

    1994-03-01T23:59:59.000Z

    The authors have investigated the ZrO[sub 2]-AlTaO[sub 4] system to understand how selected chemical substitutions can be used to control cation-ordering transformations in zirconium titanate based dielectric ceramics. The complete replacement of the Ti content of Zr[sub x]Ti[sub 2[minus]x]O[sub 4] by a coupled Al[sup 3+]/Ta[sup 5+] substitution permits the synthesis of a wide range of isostructural Zr[sub x](Al[sub 0.5]Ta[sub 0.5])[sub 2[minus]x] solid solutions. At high temperatures a disordered [alpha]-PbO[sub 2] type of structure is formed for 0.375 [le] x [le] 1.03. Samples with 0.67 [le] x [le] 1.03 undergo a cation-ordering reaction to a structure in which the a and b axes of the parent disordered cell are doubled. The stabilities of these cation-ordered derivative structures are significantly greater than those of the ordered zirconium titanates. The ordering temperatures are composition dependent with a maximum of 1,393 C occurring for Zr[sub 0.86](Al[sub 0.5]Ta[sub 0.5])[sub 1.14]O[sub 4]. The higher transition temperatures also enhance the kinetics of the ordering transition; whereas the pure zirconium titanates require extended annealing to produce complete cation order, fully ordered Zr[sub x](Al[sub 0.5]Ta[sub 0.5])[sub 2[minus]x]O[sub 4] solid solutions are produced during a normal furnace cool.

  4. Page 6 T H E E N V I R O N M E N TA L F O R U M Managing Water Demand

    E-Print Network [OSTI]

    Shapiro, Benjamin

    as structural solutions, more emphasis on demand-side as well as supply-side management techniques, and a growPage 6 T H E E N V I R O N M E N TA L F O R U M Managing Water Demand: Price vs. Non-price demand management tech- niques." These would include actions such as requiring low-flow fixtures

  5. Preliminary plans to move the special nuclear material supporting category I and II missions from TA-18 to the device assembly facility

    SciTech Connect (OSTI)

    Haag, William Earl; Nicholas, N. J. (Nancy J.); Mann, P. (Paul)

    2004-01-01T23:59:59.000Z

    In December 2002, the National Nuclear Security Agency (NNSA) issued a Record of Decision announcing its intent to relocate safeguards Category I and II missions and associated special nuclear materials (SNM) from Los Alamos National Laboratory (LANL) Technical Area 18 (TA-18) to the Device Assembly Facility (DAF) at the Nevada Test Site (NTS). The Cat I and II missions support nuclear criticality safety, nuclear emergency response, nuclear nonproliferation, and homeland security. TA-18 is the sole remaining facility in the United States with the capability to perform general-purpose nuclear materials handling experiments and training. Hands-on and remote control experiments, measurements, and training with special materials and devices are conducted. The conceptual design for modifying the DAF to house these Cat I and II missions includes plans for packaging and transporting the SNM inventory associated with the missions. This paper discusses these preliminary packaging and transporting plans, including how they fit into the plans for transitioning the relevant TA- 18 missions to DAF while ensuring that mission, cost, and schedule requirements are met.

  6. Implementing waste minimization at an active plutonium processing facility: Successes and progress at technical area (TA) -55 of the Los Alamos National Laboratory

    SciTech Connect (OSTI)

    Balkey, J.J.; Robinson, M.A.; Boak, J.

    1997-12-01T23:59:59.000Z

    The Los Alamos National Laboratory has ongoing national security missions that necessitate increased plutonium processing. The bulk of this activity occurs at Technical Area -55 (TA-55), the nations only operable plutonium facility. TA-55 has developed and demonstrated a number of technologies that significantly minimize waste generation in plutonium processing (supercritical CO{sub 2}, Mg(OH){sub 2} precipitation, supercritical H{sub 2}O oxidation, WAND), disposition of excess fissile materials (hydride-dehydride, electrolytic decontamination), disposition of historical waste inventories (salt distillation), and Decontamination & Decommissioning (D&D) of closed nuclear facilities (electrolytic decontamination). Furthermore, TA-55 is in the process of developing additional waste minimization technologies (molten salt oxidation, nitric acid recycle, americium extraction) that will significantly reduce ongoing waste generation rates and allow volume reduction of existing waste streams. Cost savings from reduction in waste volumes to be managed and disposed far exceed development and deployment costs in every case. Waste minimization is also important because it reduces occupational exposure to ionizing radiation, risks of transportation accidents, and transfer of burdens from current nuclear operations to future generations.

  7. Magnetic ordering of divalent europium in double perovskites Eu{sub 2}LnTaO{sub 6} (Ln=rare earths)

    SciTech Connect (OSTI)

    Misawa, Yoshitaka; Doi, Yoshihiro [Division of Chemistry, Hokkaido University, Sapporo 060-0810 (Japan); Hinatsu, Yukio, E-mail: hinatsu@sci.hokudai.ac.jp [Division of Chemistry, Hokkaido University, Sapporo 060-0810 (Japan)

    2011-06-15T23:59:59.000Z

    Structures and magnetic properties of double perovskite-type oxides Eu{sub 2}LnTaO{sub 6} (Ln=Eu, Dy-Lu) were investigated. These compounds adopt a distorted double perovskite structure with space group P2{sub 1}/n. Magnetic susceptibility, specific heat, and {sup 151}Eu Moessbauer spectrum measurements show that the Eu{sup 2+} ions at the 12-coordinate sites of the perovskite structure are antiferromagnetically ordered at {approx}4 K, and that Ln{sup 3+} ions at the 6-coordinate site are in the paramagnetic state down to 1.8 K. - Graphical abstract: Magnetic properties of double perovskite-type oxides Eu{sub 2}LnTaO{sub 6} (Ln=Eu, Dy-Lu) were investigated. Magnetic susceptibility, specific heat, and {sup 151}Eu Moessbauer spectrum measurements show that the Eu{sup 2+} ions at the 12-coordinate sites of the perovskite structure are antiferromagnetically ordered at {approx}4 K. Highlights: > Crystal structures of double perovskites Eu{sub 2}LnTaO{sub 6} (Ln=rare earth) were determined. > We found that these compounds show an antiferromagnetic ordering at {approx}4 K. > The magnetic ordering is due to the interactions of Eu{sup 2+} ions. > It was elucidated by specific heat and {sup 151}Eu Moessbauer spectrum measurements.

  8. C O N TA C T > Lee Ann Ciarlette | 630.252.4835 | leeann@anl.gov | Nuclear Engineering Division | students.ne.anl.gov Argonne National Laboratory, 9700 South Cass Avenue, Lemont, IL 60439 November 2012

    E-Print Network [OSTI]

    Kemner, Ken

    C O N TA C T > Lee Ann Ciarlette | 630.252.4835 | leeann@anl.gov | Nuclear Engineering Division of Massachuse s Lowell · University of Michigan · University of Michigan, Ann Arbor · University of Missouri

  9. Synthesis, crystal structure, spectroscopic and thermal properties of [Et{sub 4}N][Ta{sub 6}Br{sub 12}(H{sub 2}O){sub 6}]Br{sub 4}.4H{sub 2}O (Et=ethyl)-A new compound with the paramagnetic [Ta{sub 6}Br{sub 12}]{sup 3+} cluster core

    SciTech Connect (OSTI)

    Peric, Berislav, E-mail: bperic@irb.h [Ruder Boskovic Institute, Bijenicka cesta 54, 10000 Zagreb (Croatia); Jozic, Drazan [Ruder Boskovic Institute, Bijenicka cesta 54, 10000 Zagreb (Croatia); Planinic, Pavica, E-mail: planinic@irb.h [Ruder Boskovic Institute, Bijenicka cesta 54, 10000 Zagreb (Croatia); Brnicevic, Nevenka [Ruder Boskovic Institute, Bijenicka cesta 54, 10000 Zagreb (Croatia); Giester, Gerald [Institut fuer Mineralogie und Kristallographie, Universitaet Wien-Geozentrum Althanstrasse, 14, 1090 Wien (Austria)

    2009-09-15T23:59:59.000Z

    A new hexanuclear cluster compound, [Et{sub 4}N][Ta{sub 6}Br{sub 12}(H{sub 2}O){sub 6}]Br{sub 4}.4H{sub 2}O (Et=ethyl) (1), with the paramagnetic [Ta{sub 6}Br{sub 12}]{sup 3+} cluster entity, was synthesized and characterized by elemental and TG/DTA analyses, IR and UV/Vis spectroscopy and by a single-crystal X-ray diffraction study. The presence of the paramagnetic [Ta{sub 6}Br{sub 12}]{sup 3+} unit was confirmed also by the room-temperature magnetic and EPR measurements. The compound crystallizes in the tetragonal I4{sub 1}/a space group, with a=14.299(5), c=21.241(5) A, Z=4, R{sub 1}(F)/wR{sub 2}(F{sup 2})=0.0296/0.0811. The structure contains discrete [Ta{sub 6}Br{sub 12}(H{sub 2}O){sub 6}]{sup 3+} cations with an octahedron of metal atoms edge-bridged by bromine atoms and with water molecules occupying all six terminal positions. The cluster units are positioned in the vertices of the three-dimensional (pseudo)diamond lattice. The structure shows similarities with literature reported structures of cluster compounds crystallizing in the diamond (Fd3-barm) space group. - Graphical abstract: Two interpenetrating (pseudo)diamond nets formed by packing of the paramagnetic [Ta{sub 6}Br{sub 12}(H{sub 2}O)]{sup 3+} (octahedral) and diamagnetic [Et{sub 4}N]{sup +} (spheres) cations.

  10. Laboratory Problems TA Orientation

    E-Print Network [OSTI]

    Minnesota, University of

    the ball's kinetic energy at all times during its fall to its velocity. Relate the kinetic energy of a ball this relationship and calculus to write an expression for the ball's velocity as a function of time. Use

  11. Advanced NTR options. [Ta

    SciTech Connect (OSTI)

    Davis, J.W.; Mills, J.C.; Glass, J.F.; Tu, W. (Rockwell International/Rocketdyne Division, 6633 Canoga Avenue, MS HB23 Canoga Park, California 81303 (US))

    1991-01-05T23:59:59.000Z

    Advanced NTR concepts which offer performance improvements over the ROVER/NERVA designs have been investigated. In addition, the deliverable performance of low pressure operation and materials issues have been investigated. Based on current experience, a maximum exit gas temperature of 3200 K is likely achievable with a ZrC based PBR design. At 3200 K a low pressure NTR would have marginal performance advantage (Isp) over a high pressure system. If tantalum or other high melting point carbides are used then an exit gas temperature of 3500 K may be feasible. At 3500 K low pressure operation offers more significant performance improvements which could outweigh associated size and mass penalties.

  12. Today's Agenda TA Information

    E-Print Network [OSTI]

    Lei, Jeff Yu

    the naive-ticket-machine project. ­ Machines supply tickets of a fixed price. ­ Methods insertMoney, get of an object. public class TicketMachine { private int price; private int balance; private int total; Further details omitted. } private int price; visibility modifier type variable name #12;5 9CSE 1325: Object

  13. NbF{sub 5} and TaF{sub 5}: Assignment of {sup 19}F NMR resonances and chemical bond analysis from GIPAW calculations

    SciTech Connect (OSTI)

    Biswal, Mamata, E-mail: Mamata.Biswal-Susanta_Kumar_Nayak.Etu@univ-lemans.fr [LUNAM Université, Université du Maine, CNRS UMR 6283, Institut des Molécules et des Matériaux du Mans, Avenue Olivier Messiaen, 72085 Le Mans Cedex 9 (France); Body, Monique, E-mail: monique.body@univ-lemans.fr [LUNAM Université, Université du Maine, CNRS UMR 6283, Institut des Molécules et des Matériaux du Mans, Avenue Olivier Messiaen, 72085 Le Mans Cedex 9 (France); Legein, Christophe, E-mail: christophe.legein@univ-lemans.fr [LUNAM Université, Université du Maine, CNRS UMR 6283, Institut des Molécules et des Matériaux du Mans, Avenue Olivier Messiaen, 72085 Le Mans Cedex 9 (France); Sadoc, Aymeric, E-mail: Aymeric.Sadoc@cnrs-imn.fr [Institut des Matériaux Jean Rouxel (IMN), Université de Nantes, CNRS, 2 rue de la Houssinière, BP 32229, 44322 Nantes Cedex 3 (France); Boucher, Florent, E-mail: Florent.Boucher@cnrs-imn.fr [Institut des Matériaux Jean Rouxel (IMN), Université de Nantes, CNRS, 2 rue de la Houssinière, BP 32229, 44322 Nantes Cedex 3 (France)

    2013-11-15T23:59:59.000Z

    The {sup 19}F isotropic chemical shifts (?{sub iso}) of two isomorphic compounds, NbF{sub 5} and TaF{sub 5}, which involve six nonequivalent fluorine sites, have been experimentally determined from the reconstruction of 1D {sup 19}F MAS NMR spectra. In parallel, the corresponding {sup 19}F chemical shielding tensors have been calculated using the GIPAW method for both experimental and DFT-optimized structures. Furthermore, the [M{sub 4}F{sub 20}] units of NbF{sub 5} and TaF{sub 5} being held together by van der Waals interactions, the relevance of Grimme corrections to the DFT optimization processes has been evaluated. However, the semi-empirical dispersion correction term introduced by such a method does not show any significant improvement. Nonetheless, a complete and convincing assignment of the {sup 19}F NMR lines of NbF{sub 5} and TaF{sub 5} is obtained, ensured by the linearity between experimental {sup 19}F ?{sub iso} values and calculated {sup 19}F isotropic chemical shielding ?{sub iso} values. The effects of the geometry optimizations have been carefully analyzed, confirming among other matters, the inaccuracy of the experimental structure of NbF{sub 5}. The relationships between the fluorine chemical shifts, the nature of the fluorine atoms (bridging or terminal), the position of the terminal ones (opposite or perpendicular to the bridging ones), the fluorine charges, the ionicity and the length of the M–F bonds have been established. Additionally, for three of the {sup 19}F NMR lines of NbF{sub 5}, distorted multiplets, arising from {sup 1}J-coupling and residual dipolar coupling between the {sup 19}F and {sup 93}Nb nuclei, were simulated yielding to values of {sup 93}Nb–{sup 19}F {sup 1}J-coupling for the corresponding fluorine sites. - Graphical abstract: The complete assignment of the {sup 19}F NMR lines of NbF{sub 5} and TaF{sub 5} allow establishing relationships between the {sup 19}F ?{sub iso} values, the nature of the fluorine atoms (bridging or terminal), the position of the terminal ones (opposite or perpendicular to the bridging ones), the fluorine charges, the ionicity and the length of the M–F bonds. Display Omitted - Highlights: • The {sup 19}F ?{sub iso} values of NbF{sub 5} and TaF{sub 5} have been determined. • The {sup 19}F chemical shielding tensors have been calculated using the GIPAW method. • A confident assignment of the {sup 19}F NMR lines of NbF{sub 5} and TaF{sub 5} is obtained. • The relationships between the {sup 19}F?{sub iso} values and the M–F bonds features are established.

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

    SciTech Connect (OSTI)

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

    2014-10-28T23:59:59.000Z

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

  15. Electronic Instability in a Zero-Gap Semiconductor: The Charge-Density Wave in (TaSe4)2I

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

    Tournier-Colletta, C.; Moreschini, L.; Autès, G.; Moser, S.; Crepaldi, A.; Berger, H.; Walter, A. L.; Kim, K. S.; Bostwick, A.; Monceau, P.; Rotenberg, E.; Yazyev, O. V.; Grioni, M.

    2013-06-01T23:59:59.000Z

    We report a comprehensive study of the paradigmatic quasi-1D compound (TaSe4)2I performed by means of angle-resolved photoemission spectroscopy (ARPES) and first-principles electronic structure calculations. We find it to be a zero-gap semiconductor in the nondistorted structure, with non-negligible interchain coupling. Theory and experiment support a Peierls-like scenario for the charge-density wave formation below TCDW=263??K, where the incommensurability is a direct consequence of the finite interchain coupling. The formation of small polarons, strongly suggested by the ARPES data, explains the puzzling semiconductor-to-semiconductor transition observed in transport at TCDW.

  16. HUMAN MACHINE INTERFACE (HMI) EVALUATION OF ROOMS TA-50-1-60/60A AT THE RADIOACTIVE LIQUID WASTE TREATMENT FACILITY (RLWTF)

    SciTech Connect (OSTI)

    Gilmore, Walter E. [Los Alamos National Laboratory; Stender, Kerith K. [Los Alamos National Laboratory

    2012-08-29T23:59:59.000Z

    This effort addressed an evaluation of human machine interfaces (HMIs) in Room TA-50-1-60/60A of the Radioactive Liquid Waste Treatment Facility (RLWTF). The evaluation was performed in accordance with guidance outlined in DOE-STD-3009, DOE Standard Preparation Guide for U.S. Department of Energy Nonreactor Nuclear Facility Documented Safety Analyses, 2006 [DOE 2006]. Specifically, Chapter 13 of DOE 2006 highlights the 10 CFR 830, Nuclear Safety Management, 2012, [CFR 2012] and DOE G 421.1-2 [DOE 2001a] requirements as they relate to the human factors process and, in this case, the safety of the RLWTF. The RLWTF is a Hazard Category 3 facility and, consequently, does not have safety-class (SSCs). However, safety-significant SSCs are identified. The transuranic (TRU) wastewater tanks and associated piping are the only safety-significant SSCs in Rooms TA-50-1-60/60A [LANL 2010]. Hence, the human factors evaluation described herein is only applicable to this particular assemblage of tanks and piping.

  17. In situ X-ray diffraction strain-controlled study of Ti–Nb–Zr and Ti–Nb–Ta shape memory alloys: crystal lattice and transformation features

    SciTech Connect (OSTI)

    Dubinskiy, S. [École de technologie supérieure, 1100, Notre-Dame Street West, Montreal, Quebec H3C 1K3 (Canada); National University of Science and Technology “MISIS”, 4, Leninskiy prosp., Moscow 119049 (Russian Federation); Prokoshkin, S. [National University of Science and Technology “MISIS”, 4, Leninskiy prosp., Moscow 119049 (Russian Federation); Brailovski, V., E-mail: vladimir.brailovski@etsmtl.ca [École de technologie supérieure, 1100, Notre-Dame Street West, Montreal, Quebec H3C 1K3 (Canada); Inaekyan, K. [École de technologie supérieure, 1100, Notre-Dame Street West, Montreal, Quebec H3C 1K3 (Canada); Korotitskiy, A. [National University of Science and Technology “MISIS”, 4, Leninskiy prosp., Moscow 119049 (Russian Federation)

    2014-02-15T23:59:59.000Z

    Phase and structure transformations in biomedical Ti–21.8Nb–6.0Zr (TNZ) and Ti–19.7Nb–5.8Ta (TNT) shape memory alloys (at.%) under and without load in the ? 150 to 100 °S temperature range are studied in situ using an original tensile module for a low-temperature chamber of an X-ray diffractometer. Alpha?- and beta-phase lattice parameters, the crystallographic resource of recovery strain, phase and structure transformation sequences, and microstress appearance and disappearance are examined, compared and discussed. For both alloys, the crystallographic resource of recovery strain decreases with temperature increase to become 4.5% for TNZ and 2.5% for TNT alloy (at RT). Loading at low temperatures leads to additional ??-phase formation and reorientation. Heating under load, as compared to strain-free heating, affects the reverse transformation sequence of both alloys in different ways. For TNZ alloy, strain-free heating results in simultaneous ??? and ???? transformations, whereas during heating under stress, they are sequential: ? + ???? precedes ????. For TNT alloy, strain-free heating results in reverse ???? transformation, whereas during heating under stress, ???? transformation is preceded by ??-phase reorientation. - Highlights: • Comparative in situ XRD analysis of Ti–Nb–Zr(Ta) shape memory alloys is realized. • Lattice parameters of ?- and ??-phases are calculated in the ? 150 to + 100 °C range. • The higher the temperature, the lower the ???? transformation strain. • Loading at low temperatures results in ??-phase formation and reorientation. • Transformation sequences upon heating with and without loading are different.

  18. An aqueous route to [Ta6O19]8- and solid-state studies of isostructural niobium and tantalum oxide complexes.

    SciTech Connect (OSTI)

    Nyman, May D.; Anderson, Travis Mark [Sandia National Laboratories, Albuquerque, NM; Alam, Todd M. [Sandia National Laboratories, Albuquerque, NM; Rodriguez, Mark Andrew [Sandia National Laboratories, Albuquerque, NM; Joel N. Bixler; Francois Bonhomme

    2007-10-01T23:59:59.000Z

    Tantalate materials play a vital role in our high technology society: tantalum capacitors are found in virtually every cell phone. Furthermore, electronic characteristics and the incredibly inert nature of tantalates renders them ideal for applications such as biomedical implants, nuclear waste forms, ferroelectrics, piezoelectrics, photocatalysts and optical coatings. The inert and insoluble nature of tantalates is not fundamentally understood; and furthermore poor solubility renders fabrication of novel or optimized tantalates very difficult. We have developed a soft chemical route to water-soluble tantalum oxide clusters that can serve as both precursors for novel tantalate materials and ideal models for experimental and computational approaches to understanding the unusually inert behavior of tantalates. The water soluble cluster, [Ta6O19]8- is small, highly symmetric, and contains the representative oxygen types of a metal oxide surface, and thus ideally mimics a complex tantalate surface in a simplistic form that can be studied unambiguously. Furthermore; in aqueous solution, these highly charged and super-basic clusters orchestrate surprising acid-base behavior that most likely plays an important role in the inertness of related oxide surfaces. Our unique synthetic approach to the [Ta6O19]8- cluster allowed for unprecedented enrichment with isotopic labels (17O), enabling detailed kinetic and mechanistic studies of the behavior of cluster oxygens, as well as their acid-base behavior. This SAND report is a collection of two publications that resulted from these efforts.

  19. Joint contributions of Ag ions and oxygen vacancies to conducting filament evolution of Ag/TaO{sub x}/Pt memory device

    SciTech Connect (OSTI)

    Chung, Yu-Lung; Cheng, Wen-Hui; Chen, Wei-Chih; Jhan, Sheng-An; Chen, Jen-Sue, E-mail: jenschen@mail.ncku.edu.tw [Department of Materials Science and Engineering, National Cheng Kung University, Tainan 701, Taiwan (China); Jeng, Jiann-Shing [Department of Materials Science, National University of Tainan, Tainan 700, Taiwan (China)

    2014-10-28T23:59:59.000Z

    The electroforming and resistive switching behaviors in the Ag/TaO{sub x}/Pt trilayer structure are investigated under a continual change of temperatures between 300?K and 100?K to distinguish the contributions of Ag ions and oxygen vacancies in developing of conducting filaments. For either electroforming or resistive switching, a significantly higher forming/set voltages is needed as the device is operated at 100?K, as compared to that observed when operating at 300?K. The disparity in forming/set voltages of Ag/TaO{sub x}/Pt operating at 300?K and 100?K is attributed to the contribution of oxygen vacancies, in addition to Ag atoms, in formation of conducting filament at 100?K since the mobilities of oxygen vacancies and Ag ions become comparable at low temperature. The presence of oxygen vacancy segment in the conducting filament also modifies the reset current from a gradually descending behavior (at 300?K) to a sharp drop (at 100?K). Furthermore, the characteristic set voltage and reset current are irreversible as the operation temperature is brought from 100?K back to 300?K, indicating the critical role of filament constituents on the switching behaviors of Ag/oxide/Pt system.

  20. Conduction processes in metal–insulator–metal diodes with Ta{sub 2}O{sub 5} and Nb{sub 2}O{sub 5} insulators deposited by atomic layer deposition

    SciTech Connect (OSTI)

    Alimardani, Nasir; McGlone, John M.; Wager, John F.; Conley, John F., E-mail: jconley@eecs.oregonstate.edu [School of Electrical Engineering and Computer Science, Oregon State University, 1148 Kelley Engineering Center, Corvallis, Oregon 97331-5501 (United States)

    2014-01-15T23:59:59.000Z

    Metal–insulator–metal diodes with Nb{sub 2}O{sub 5} and Ta{sub 2}O{sub 5} insulators deposited via atomic layer deposition are investigated. For both Nb{sub 2}O{sub 5} and Ta{sub 2}O{sub 5}, the dominant conduction process is established as Schottky emission at small biases and Frenkel–Poole emission at large biases. Fowler–Nordheim tunneling is not found to play a role in determining current versus voltage asymmetry. The dynamic dielectric constants are extracted from conduction plots and found to be in agreement with measured optical dielectric constants. Trap energy levels at ?{sub T}???0.62 and 0.53?eV below the conduction band minimum are estimated for Nb{sub 2}O{sub 5} and Ta{sub 2}O{sub 5}, respectively.

  1. Optical breakdown threshold in nanosecond high repetition second harmonic generation by periodically poled Mg-doped LiTaO{sub 3} crystal

    SciTech Connect (OSTI)

    Louchev, Oleg A.; Wada, Satoshi [Center for Advanced Photonics, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198 (Japan)] [Center for Advanced Photonics, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198 (Japan); Hatano, Hideki; Kitamura, Kenji [Division of Environment and Energy Materials, National Institute for Materials Science (NIMS) 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan)] [Division of Environment and Energy Materials, National Institute for Materials Science (NIMS) 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan)

    2013-08-26T23:59:59.000Z

    Our study shows that a local temperature increase of ?1 K in the crystal lattice caused by second harmonic generation (SHG) and two-photon absorption of 532 nm radiation at the rear of periodically poled stoichiometric LiTaO{sub 3} crystal by changing spontaneous polarization induces a pyroelectric field ?10 kV/cm, accelerating free electrons to an energy of ?10 eV, followed by optical breakdown and crystal damage. Theoretical analysis leads to an explicit expression for the threshold laser fluence of optical breakdown giving ?1.2 J/cm{sup 2} for 1064 nm input radiation in 6.8 kHz pulsed SHG operation, agreeing well with the experimentally found value ?1.32 J/cm{sup 2}.

  2. The Flexible Display CenTer aT arizona sTaTe UniversiTy The U.S. Army established the Flexible Display Center at ASU in February 2004 to spearhead the next revolution in

    E-Print Network [OSTI]

    Rhoads, James

    The Flexible Display CenTer aT arizona sTaTe UniversiTy The U.S. Army established the Flexible development, innovation and integration to create a new generation of innovative displays that will be flexible, lightweight, low power, and rugged. These revolutionary displays will usher in a new era

  3. Cation ordering transformations in Ba(Mg{sub 1/3}Ta{sub 2/3})O{sub 3}-BaZrO{sub 3} perovskite solid solutions

    SciTech Connect (OSTI)

    Chai, L.; Akbas, M.A.; Davies, P.K. [Univ. of Pennsylvania, Philadelphia, PA (United States). Dept. of Materials Science and Engineering] [Univ. of Pennsylvania, Philadelphia, PA (United States). Dept. of Materials Science and Engineering; Parise, J.B. [Univ. of New York, Stony Brook, NY (United States). Dept. of Earth and Space Sciences] [Univ. of New York, Stony Brook, NY (United States). Dept. of Earth and Space Sciences

    1997-09-01T23:59:59.000Z

    The effect of the substitution of BaZrO{sub 3} on the cation ordering in Ba(Mg{sub 1/3}Ta{sub 2/3})O{sub 3} was studied using TEM and X-ray and neutron diffraction. Almost no solubility of Zr was found in the 1:2 ordered, trigonal structure of the Ba(Mg{sub 1/3}Ta{sub 2/3})O{sub 3} end-member (P{bar 3}m1), and a transformation to a 1:1 ordered, cubic (Fm{bar 3}m) phase with a = 2a{sub per} occurs for substitution levels between {approximately}10 and 25 mol% BaZrO{sub 3}. The structure of this Ba({beta}{prime}{sub 1/2}{beta}{double_prime}{sub 1/2})O{sub 3}-type phase consists of two distinct octahedral sites, {beta}{prime} and {beta}{double_prime}. The occupancies of the two cation positions, refined using the Rietveld method, were found to be consistent with a random site model in which {beta}{double_prime} is occupied by Ta, and {beta}{prime} by a random distribution of the remaining cations. The homogeneity range of the 1:1 solid solutions predicted by this model, Ba{l_brace}[Mg{sub (2{minus}y)/3} Ta{sub (1{minus}2y)/3} Zr{sub y}]{sub 1/2}[Ta]{sub 1/2}{r_brace}O{sub 3} (0.0 < y {le} 0.5), is in excellent agreement with that observed experimentally.

  4. Development of Low Cost Membranes (Ta, Nb & Cellulose Acetate) for H{sub 2}/CO{sub 2} Separation in WGS Reactors

    SciTech Connect (OSTI)

    Naidu Seetala; Upali Siriwardane

    2011-06-30T23:59:59.000Z

    The main aim of this work is to synthesize low temperature bimetallic nanocatalysts for Water Gas Shift reaction (WGS) for hydrogen production from CO and steam mixture; and develop low-cost metal (Nb/Ta)/ceramic membranes for H{sub 2} separation and Cellulose Acetate membranes for CO{sub 2} separation. Cu-Ni-Ce/alumina, Fe-Ni-Ce/alumina granular WGS catalysts incorporating metal oxide nanoparticles into alumina support were prepared using sol-gel/oil-drop methods. The catalysts were characterized by Powder X-ray Diffractometer (PXRD), Scanning Electron Microscope (SEM), Differential Thermal Analyzer (DTA), Thermal Gravitational Analyzer (TGA), and Brunauer, Emmett and Teller (BET) techniques. TGA shows sharp weight loss at approximately 215°C and DTA shows dehydration of metal hydroxides between 200°C and 250°C. The PXRD spectra show an increase in crystallinity as a result of heating to 1000°C, and indicating a fine dispersion of the metal oxide nanoparticles in alumina supports during the sol-gel synthesis and calcination at 450°C. BET analysis indicated a mesoporous structure of the granules with high surface area. A gas-phase dynamic flow reactor is used to optimize the reaction temperatures. A gas-phase batch reactor was used to obtain kinetic data and the parameters for maximum CO conversion. In Cu-Ni-Ce/alumina category, Cu(0%)Ni(10%)Ce(11%) was found to be the best WGS catalyst among six Low Temperature Shift (LTS) catalysts with optimum temperatures between 200-300�°C, while Ni(5%)Cu(5%)Ce(11%) was found to be the best among four High Temperature Shift (HTS) catalysts with optimum temperature between 350-400°C. In the Fe-Ni-Ce/alumina category catalysts, Fe(8%)Ni(0%)Ce(8%)/alumina and Fe(6%)Ni(2%)Ce(8%)/alumina catalysts showed optimum WGS reaction temperature below 150°C. All Ni(8-x%)Fe(x%)Ce(8%) had lower WGS reaction efficiencies compared to Ni(8-x%)Cu(x%)Ce(8%). Metal (Nb or Ta)/ceramic membranes for hydrogen separation from the WGS reaction gas products have been prepared using a) sputtering and b) aluminothermic techniques. A polyvinyl-glass permeability tester was used with a gas chromatograph (GC) for H{sub 2}/CO permeability testing. Nb films showed a higher permeability than Ta at a given disk porosity. The aluminothermically deposited membranes have higher H{sub 2} permeability compared to the sputtered films, and Nb-film coated disks showed lower H{sub 2} permeability than Ta-film. A three-stage prototype stainless steel reactor with integrated housing for 1) WGS reaction catalysts, 2) H{sub 2}/CO{sub 2} separation metal/ceramic or metal/asbestos membranes, and 3) CO/CO{sub 2} separation cellulose acetate /filter-paper membranes has been designed and tested to have capabilities to perform WGS reactions at temperatures up to 400°C and withstand gas pressures up to 15 bars. The cracking of ceramic disks and gas leaks were successfully prevented by replacing ceramic disks with asbestos sheets that can easily withstand 400°C. Kinetic studies of H{sub 2} and CO permeabilities were performed through the single and double layer Nb and Ta membranes. Cellulose acetate (CA) films with 25% triethyl citrate (TEC) as plasticizer were prepared for H{sub 2}/CO/CO{sub 2} gas separation with varying thickness of the films by acetone solutions at different concentrations and by dip-coating onto filter papers. The AFM analysis of the CA membrane showed that the uniform coating had fewer and smaller pores as the film thickness increased, and corroborated by gas permeability studies. The CO{sub 2} permeability has decreased faster than CO permeability with the CA/TEC membrane thickness, and findings support that the CA membrane could be used to entrap CO{sub 2}. Several CA/TEC membranes were also staked to increase the separation efficiency. Positron Lifetime Spectroscopy (PLS) was used to estimate the micro-porosity (pore size and concentration) and fractional free volume changes of CA/TEC films, and used to understand the variations observed in the CO{sub 2}/CO permeabilities.

  5. Excitation functions of the nat-Ta(p,x)178m2Hf and nat-W(p,x)178m2Hf reactions at energies up to 2600 MeV

    E-Print Network [OSTI]

    Titarenko, Yu E; Pavlov, K V; Titarenko, A Yu; Zhivun, V M; Chauzova, M V; Ignatyuk, A V; Mashnik, S G; Leray, S; Boudard, A; David, J -C; Mancusi, D; Cugnon, J; Yariv, Y; Nishihara, K; Matsuda, N; Kumawat, H; Stankovsky, A Yu

    2015-01-01T23:59:59.000Z

    Due to potential level of energy intensity 178m2Hf is an extremely interesting isomer. One possible way to produce this isomer is irradiation of nat-Ta or nat-W samples with high energy protons. Irradiation of nat-Ta and nat-W samples performed for other purposes provides an opportunity to study the corresponding reactions. This paper pre-sents the 178m2Hf independent production cross sections for both targets measured by the gamma-ray spectrometry method. The reaction excitation functions have been obtained for the proton energies from 40 up to 2600 MeV. The experimental results were compared with calculations by various versions of the intranuclear cascade model in the well-known codes: ISABEL, Bertini, INCL4.5+ABLA07, PHITS, CASCADE07 and CEM03.02. The isomer ratio for the nat-Ta(p,x)178m2Hf reaction is evaluated on the basis of the available data.

  6. Excitation functions of the nat-Ta(p,x)178m2Hf and nat-W(p,x)178m2Hf reactions at energies up to 2600 MeV

    E-Print Network [OSTI]

    Yu. E. Titarenko; V. F. Batyaev; K. V. Pavlov; A. Yu. Titarenko; V. M. Zhivun; M. V. Chauzova; A. V. Ignatyuk; S. G. Mashnik; S. Leray; A. Boudard; J. -C. David; D. Mancusi; J. Cugnon; Y. Yariv; K. Nishihara; N. Matsuda; H. Kumawat; A. Yu. Stankovsky

    2015-04-30T23:59:59.000Z

    Due to potential level of energy intensity 178m2Hf is an extremely interesting isomer. One possible way to produce this isomer is irradiation of nat-Ta or nat-W samples with high energy protons. Irradiation of nat-Ta and nat-W samples performed for other purposes provides an opportunity to study the corresponding reactions. This paper pre-sents the 178m2Hf independent production cross sections for both targets measured by the gamma-ray spectrometry method. The reaction excitation functions have been obtained for the proton energies from 40 up to 2600 MeV. The experimental results were compared with calculations by various versions of the intranuclear cascade model in the well-known codes: ISABEL, Bertini, INCL4.5+ABLA07, PHITS, CASCADE07 and CEM03.02. The isomer ratio for the nat-Ta(p,x)178m2Hf reaction is evaluated on the basis of the available data.

  7. VEHICLE ACCESS PORTALS TA-48 Vicinity TA-36 Vicinity

    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 SpinPrincetonUsing Maps to Predict4 VARIATIONS IN THE SOLARJemez

  8. Measurement and simulation of the cross sections for the production of {sup 148}Gd in thin {sup nat}W and {sup 181}Ta targets irradiated with 0.4- to 2.6-GeV protons

    SciTech Connect (OSTI)

    Titarenko, Yu. E., E-mail: Yury.Titarenko@itep.ru; Batyaev, V. F.; Titarenko, A. Yu.; Butko, M. A.; Pavlov, K. V.; Florya, S. N.; Tikhonov, R. S.; Zhivun, V. M. [Institute for Theoretical and Experimental Physics (Russian Federation); Ignatyuk, A. V. [Institute of Physics and Power Engineering (Russian Federation); Mashnik, S. G. [Los Alamos National Laboratory (United States); Leray, S.; Boudard, A. [CEA (France); Cugnon, J.; Mancusi, D. [University of Liege (Belgium); Yariv, Y. [SoreqNRC (Israel); Nishihara, K.; Matsuda, N. [JAEA (Japan); Kumawat, H. [BARC (India); Mank, G. [IAEA (Austria); Gudowski, W. [Royal Institute of Technology (Sweden)

    2011-04-15T23:59:59.000Z

    The cross sections for the production of {sup 148}Gd in {sup nat}W and {sup 181}Ta targets irradiated by 0.4-, 0.6-, 0.8-, 1.2-, 1.6-, and 2.6-GeV protons at the ITEP accelerator complex have been measured by direct {alpha} spectrometry without chemical separation. The experimental data have been compared with the data obtained at other laboratories and with the theoretical simulations of the yields on the basis of the BERTINI, ISABEL, CEM03.02, INCL4.2, INCL4.5, CASCADE07, and PHITS codes.

  9. X-ray diffraction on the X-cut of a Ca{sub 3}TaGa{sub 3}Si{sub 2}O{sub 14} single crystal modulated by a surface acoustic wave

    SciTech Connect (OSTI)

    Irzhak, D., E-mail: irzhak@iptm.ru; Roshchupkin, D., E-mail: rochtch@iptm.ru [Institute of Microelectronics Technology and High-Purity Materials Russian Academy of Sciences, Chernogolovka 142432 (Russian Federation)

    2014-06-28T23:59:59.000Z

    The result of X-ray diffraction study on a single crystal of the calcium-gallogermanate family Ca{sub 3}TaGa{sub 3}Si{sub 2}O{sub 14} (CTGS) modulated by a surface acoustic wave (SAW) is presented. The power flow angle for SAW propagating along the X{sub 2} axis of the X-cut in CTGS was measured. The rocking curves for the CTGS crystal were recorded at different amplitudes of an input high frequency electric signal on interdigital transducer used to excite a SAW. Based on the data obtained, intensity dependence of diffraction satellites on the amplitude of electric signal exciting a SAW was built. Numerical simulation of the crystal rocking curves and dependence of diffraction satellite intensities on the SAW amplitude enabled the selection of a set of material constants at which the most complete coincidence of experimental and calculated results is observed.

  10. Measurement and simulation of the cross sections for nuclide production in {sup nat}W and {sup 181}Ta targets irradiated with 0.04- to 2.6-GeV protons

    SciTech Connect (OSTI)

    Titarenko, Yu. E., E-mail: Yury.Titarenko@itep.ru; Batyaev, V. F.; Titarenko, A. Yu.; Butko, M. A.; Pavlov, K. V.; Florya, S. N.; Tikhonov, R. S.; Zhivun, V. M. [Institute for Theoretical and Experimental Physics (Russian Federation); Ignatyuk, A. V. [Institute of Physics and Power Engineering (Russian Federation); Mashnik, S. G. [Los Alamos National Laboratory (United States); Leray, S.; Boudard, A. [CEA (France); Cugnon, J.; Mancusi, D. [University of Liege (Belgium); Yariv, Y. [SoreqNRC (Israel); Nishihara, K.; Matsuda, N. [JAEA (Japan); Kumawat, H. [BARC (India); Mank, G. [IAEA (Austria); Gudowski, W. [Royal Institute of Technology (Sweden)

    2011-04-15T23:59:59.000Z

    The cross sections for nuclide production in thin {sup nat}Wand {sup 181}Ta targets irradiated by 0.04-2.6-GeV protons have been measured by direct {gamma} spectrometry using two {gamma} spectrometers with the resolutions of 1.8 and 1.7 keV in the {sup 60}Co 1332-keV {gamma} line. As a result, 1895 yields of radioactive residual product nuclei have been obtained. The {sup 27}Al(p, x){sup 22}Na reaction has been used as a monitor reaction. The experimental data have been compared with the MCNPX (BERTINI, ISABEL), CEM03.02, INCL4.2, INCL4.5, PHITS, and CASCADE07 calculations.

  11. Nickel Alloy, Corrosion and Heat-Resistant, Sheet, Strip, and Plate 72Ni - 15.5Cr - 0.95 (Cb (Nb) + Ta) - 2.5Ti - 0.70Al - 7.0Fe Consumable Electrode, Remelted or Vacuum Induction Melted, Solution Heat Treated, Precipitation-Hardenable

    E-Print Network [OSTI]

    SAE Aerospace Standards. London

    2012-01-01T23:59:59.000Z

    Nickel Alloy, Corrosion and Heat-Resistant, Sheet, Strip, and Plate 72Ni - 15.5Cr - 0.95 (Cb (Nb) + Ta) - 2.5Ti - 0.70Al - 7.0Fe Consumable Electrode, Remelted or Vacuum Induction Melted, Solution Heat Treated, Precipitation-Hardenable

  12. MAE TEACHING ASSISTANT / READER ASSIGNMENTS 1/7/13 12:12 COURSE INSTRUCTOR TA_name1 TA1 TA_name2 TA2 TA_name3 TA3 TA_name4 TA4 TA_name5 TA5 TAtotal

    E-Print Network [OSTI]

    Mease, Kenneth D.

    , Alex 1.00 Borrajo, Rafael 0.50 1.50 MAE110 McDonell McLarty, Dustin 0.50 0.50 MAE115 Brouwer Jarrahbashi, Dorrin 1.00 Fardadi, Mahshid 0.50 Taghavi, Shervin 0.50 2.00 MAE130A Papamoschou Hernandez, Franz.50 MAE130B LaRue Hernandez, Franz 1.00 Koster, Timothy 0.50 1.50 MAE146 Villac Nakhjiri, Navid 0.50 0

  13. Enhanced ferroelectric and dielectric properties of (111)-oriented highly cation-ordered PbSc{sub 0.5}Ta{sub 0.5}O{sub 3} thin films

    SciTech Connect (OSTI)

    Chopra, Anuj [Max Planck Institute of Microstructure Physics, Weinberg 2, D-06120 Halle (Saale) (Germany); Faculty of Science and Technology, MESA Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE Enschede (Netherlands); Birajdar, Balaji I. [Max Planck Institute of Microstructure Physics, Weinberg 2, D-06120 Halle (Saale) (Germany); Special Centre for Nano Sciences, Jawaharlal Nehru University, New Delhi 110067 (India); Kim, Yunseok [Max Planck Institute of Microstructure Physics, Weinberg 2, D-06120 Halle (Saale) (Germany); School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon 440-746 (Korea, Republic of); Alexe, Marin [Max Planck Institute of Microstructure Physics, Weinberg 2, D-06120 Halle (Saale) (Germany); Department of Physics, University of Warwick, Coventry CV4 7AL (United Kingdom); Hesse, Dietrich [Max Planck Institute of Microstructure Physics, Weinberg 2, D-06120 Halle (Saale) (Germany)

    2013-12-14T23:59:59.000Z

    Cation-ordered (111)-oriented epitaxial PbSc{sub 0.5}Ta{sub 0.5}O{sub 3} (PST) thin films were deposited by pulsed laser deposition on SrRuO{sub 3}-electroded SrTiO{sub 3} (111) substrates at three different temperatures of 525?°C, 550?°C, and 575?°C. All the films were well crystalline and (111)-oriented at all the three growth temperatures; however, the films deposited at the temperatures other than 550?°C exhibited the presence of a pyrochlore phase. X-ray diffraction analysis and transmission electron microscopy measurements revealed that the films were epitaxial and highly cation-ordered. In comparison to (001)-oriented PST films, (111)-oriented films on SrRuO{sub 3}/SrTiO{sub 3} (111) exhibited enhanced ferroelectric and dielectric properties with a broad size distribution of cation-ordered domains (5–100?nm). At a measurement temperature of 100?K, the remnant polarization of PST (111) films is almost ?3 times larger than the remnant polarization observed for (001)-oriented PST films, which is attributed to the (111) orientation of the films, as the spontaneous polarization in PST lies close to the [111] direction. The observed dielectric constant and loss at 1?kHz were around 1145 and 0.11, respectively. The dielectric constant is thus almost three times higher than for previously reported (001)-oriented PST thin films, most probably due to the enhancement in cation-ordering.

  14. Electrochemical characterization of a low modulus Ti-35.5Nb-7.3Zr-5.7Ta alloy in a simulated body fluid using EIS for biomedical applications

    SciTech Connect (OSTI)

    Bhola, R.; Bhola, S. M.; Mishra, B.; Ayers, R. A.; Olson, D. L. [Department of Metallurgical and Materials Engineering, Colorado School of Mines, 1500 Illinois Street, Golden, CO (United States)

    2011-06-23T23:59:59.000Z

    Electrochemical characterization of the low modulus Ti-35.5Nb-7.3Zr-5.7Ta beta alloy (TNZT) has been performed in phosphate buffer saline solution at 37 deg. C using the non destructive electrochemical impedance spectroscopy technique. Measurements were performed at various immersion intervals at the open circuit potential (OCP), which was also monitored with time. Results obtained for TNZT alloy have been compared with those for the commercially used Ti-6Al-4V mixed alloy (Ti64) and the commercially pure titanium (Ti2) alpha alloy. Potentiodynamic polarization was performed to supplement the data obtained from EIS analysis. The TNZT alloy exhibits a two time constant impedance response, whereas the Ti64 and Ti2 alloys display a one time constant behavior. Human fetal osteoblast cells show a better adhesion and a higher cell count for the TNZT alloy compared to the other two alloys. The present investigation is an effort to understand the correlation between the electrochemical, morphological and cellular characteristics of titanium alloys to qualify them for implant applications.

  15. Programming T.A. Standish Languages Editor

    E-Print Network [OSTI]

    Goldstein, Seth Copen

    of the Association for Computing Machinery. Author's address: Burroughs, Plataanstraat 5, Nuenen--4565

  16. TA-55: LANL Plutonium-Processing Facilities

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

    chemistry; nuclear materials separation, processing, and recovery; plutonium metallurgy, preparation, casting, fabrication, and recovery; machining and metallurgy...

  17. TA-55: LANL Plutonium-Processing Facilities

    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 Our InstagramStructureProposed Action(InsertAbout theSystems LongFacilityTTA-55:

  18. BL 11

    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 Office511041cloth DocumentationProductsAlternativeOperationalAugust NazimBudgetRenewable8/07/13 PageBI\it-ï-?BL

  19. M I C R O S C A L E Z N S P E C I AT I O N I N A S M E LT E R -C O N TA M I N AT E D S O I L U S I N G MICRO-XAS AND XRE TECHNIQUES

    E-Print Network [OSTI]

    Sparks, Donald L.

    M I C R O S C A L E Z N S P E C I AT I O N I N A S M E LT E R - C O N TA M I N AT E D S O I L U S I the speciation of Zn in the soils o f B l u e M o u n t a i n . The application of spectroscopic techniques map, XANES spectra were collected on "hot spots" (areas of highest metal concentration) 100 eV below

  20. Investigation on transition behavior and electrical properties of (K{sub 0.5}Na{sub 0.5}){sub 1-x}Li{sub x}Nb{sub 0.84}Ta{sub 0.1}Sb{sub 0.06}O{sub 3} around polymorphic phase transition region

    SciTech Connect (OSTI)

    Zhu, Chen; Wang, Wenchao; Shi, Honglin; Wang, Fangyu; Cao, Yongge [Department of Physics, Renmin University of China, Beijing 100872, P R China (China) [Department of Physics, Renmin University of China, Beijing 100872, P R China (China); Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002 (China); Huang, Jiquan; Wang, Chong [Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002 (China)] [Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002 (China); Tang, Fei; Yuan, Xuanyi, E-mail: yuanxuanyi@ruc.edu.cn [Department of Physics, Renmin University of China, Beijing 100872, P R China (China)] [Department of Physics, Renmin University of China, Beijing 100872, P R China (China); Liu, Yang [School of Chemistry and Environment Engineering, Shaoguan University, Shaoguan 512005 (China)] [School of Chemistry and Environment Engineering, Shaoguan University, Shaoguan 512005 (China)

    2014-01-15T23:59:59.000Z

    (K{sub 0.5}Na{sub 0.5}){sub 1-x}Li{sub x}Nb{sub 0.84}Ta{sub 0.1}Sb{sub 0.06}O{sub 3} (KNLNTS) lead free ceramics with different Li concentration were fabricated by conventional solid-state reaction method. By increasing Li ions in KNLNTS, the grains grow up and the crystal structure changes from orthorhombic to tetragonal. When 0.03 ? x ? 0.05, the ceramics structure lays in PPT region. Polarization versus electric field (P-E) hysteresis loops at room temperature show good ferroelectric properties and the remnant polarization decreases by increasing Li content while coercive electric keeps almost unchanged. In PPT region, taking x = 0.04 as an example, the sample shows excellent dielectric properties: the dielectric constant is 1159 and loss tangent is 0.04, while the piezoelectric constant d{sub 33} is 245 pC/N and kp is 0.44 at room temperature, it is promising for (K{sub 0.5}Na{sub 0.5}){sub 1-x}Li{sub x}Nb{sub 0.84}Ta{sub 0.1}Sb{sub 0.06}O{sub 3} with 4 at. % Li to substitute PZT.

  1. Visitor Tours at TA-53 TA53-FO-121-001A

    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 SolStrengthening aTurbulenceUtilize AvailableMedia1.1 The HistoryVisitingVisitor

  2. Memo - Legacy Technical Area (TA)-55 Nitrate Salt Wastes at TA-54,

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011 Strategic2 OPAM Flash2011-12Approvedof6,Projects38, 1) Agenda 2)EnergyMeijerPotential

  3. Addressing concerns related to geologic hazards at the site of the proposed Transuranic Waste Facility , TA-63, Los Alamos National Laboratory: focus on the current Los Alamos Seismic Network earthquake catalog, proximity of identified seismic events to the proposed facility , and evaluation of prev

    SciTech Connect (OSTI)

    Roberts, Peter M. [Los Alamos National Laboratory; Schultz-Fellenz, Emily S. [Los Alamos National Laboratory; Kelley, Richard E. [Los Alamos National Laboratory

    2012-04-02T23:59:59.000Z

    This technical paper presents the most recent and updated catalog of earthquakes measured by the Los Alamos Seismic Network at and around Los Alamos National Laboratory (LANL), with specific focus on the site of the proposed transuranic waste facility (TWF) at Technical Area 63 (TA-63). Any questions about the data presented herein, or about the Los Alamos Seismic Network, should be directed to the authors of this technical paper. LANL and the Los Alamos townsite sit atop the Pajarito Plateau, which is bounded on its western edge by the Pajarito fault system, a 35-mile-long system locally comprised of the down-to-the-east Pajarito fault (the master fault) and subsidiary down-to-the-west Rendija Canyon, Guaje Mountain, and Sawyer Canyon faults (Figure 1). This fault system forms the local active western margin of the Rio Grande rift near Los Alamos, and is potentially seismogenic (e.g., Gardner et al., 2001; Reneau et al., 2002; Lewis et al., 2009). The proposed TWF area at TA-63 is situated on an unnamed mesa in the north-central part of LANL between Twomile Canyon to the south, Ten Site Canyon to the north, and the headwaters of Canada del Buey to the east (Figure 2). The local bedrock is the Quaternary Bandelier Tuff, formed in two eruptive pulses from nearby Valles caldera, the eastern edge of which is located approximately 6.5 miles west-northwest of the technical area. The older member (Otowi Member) of the Bandelier Tuff has been dated at 1.61 Ma (Izett and Obradovich 1994). The younger member (Tshirege Member) of the Bandelier Tuff has been dated at 1.256 Ma (age from Phillips et al. 2007) and is widely exposed as the mesa-forming unit around Los Alamos. Several discrete cooling units comprise the Tshirege Member. Commonly accepted stratigraphic nomenclature for the Tshirege Member is described in detail by Broxton and Reneau (1995), Gardner et al. (2001), and Lewis et al. (2009). The Tshirege Member cooling unit exposed at the surface at TA-63 is Qbt3. Understanding the subtle differences between Tshirege Member cooling units and the nature of the contacts between cooling units is critical to identifying the presence or absence of faults associated with the Pajarito fault system on the Pajarito Plateau. The Los Alamos Seismic Network (LASN) continuously monitors local earthquake activity in the Los Alamos area in support of LANL's Seismic Hazards program. Seismic monitoring of LANL facilities is a requirement of DOE Order 420.1B (Facility Safety). LASN currently consists of nine permanent seismic instrument field stations that telemeter real-time sensitive ground motion data to a central recording facility. Four of these stations are located on LANL property, with three of those within 2.5 miles of TA-63. The other five stations are in remote locations in the Jemez Mountains, Valles Caldera, St Peters Dome, and the Caja del Rio plateau across the Rio Grande from the Los Alamos area. Local earthquakes are defined as those with locations within roughly 100 miles of Los Alamos. Plate 1 shows the current LASN station locations and all local earthquakes recorded from 1973 through 2011. During this time period, LASN has detected and recorded over 850 local earthquakes in north-central New Mexico. Over 650 of these were located within about 50 miles of Los Alamos, and roughly 60 were within 10 miles. The apparent higher density of earthquakes close to Los Alamos, relative to the rest of north-central New Mexico, is due largely to the fact that LASN is a sensitive local seismic network, recording many very small nearby events (magnitude less than 1.0) that are undetectable at greater distances.

  4. TA Orientation 2007 August 20-24 & 27-31

    E-Print Network [OSTI]

    Minnesota, University of

    for the opening you made yesterday in one of the 6 small groups of eight. Discussion/critique of the above I, III and IV) Think about positive and negative aspects of using group work in class based on your of answers. The discussion tomorrow will be done in a group of 10-15. Diagnose problems that students

  5. C4TA02307B 12262..12269

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

    Mesoporous graphene-like carbon sheet: high-power supercapacitor and outstanding catalyst support Pengfei Zhang, * a Zhen-An Qiao, a Zhiyong Zhang, a Shun Wan a and Sheng Dai *...

  6. C2TA00634K 59..62

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

    Magadiite templated high surface area graphene-type carbons from metal-halide based ionic liquids Pasquale Fernando Fulvio, * a Patrick Christopher Hillesheim, a John...

  7. TA-55 Hot CMM Calibration Tolerance Analysis (U)

    SciTech Connect (OSTI)

    Montano, Joshua D. [Los Alamos National Laboratory

    2012-06-12T23:59:59.000Z

    The Hot Coordinate Measuring Machine (CMM), a Brown and Sharpe Xcel 765, has specifications listed by the manufacture of 4.5 + L/250 {micro}m for volumetric performance, 3.5 {micro}m for probing and 4.5 {micro}m for scanning. An upgrade was performed on the machine increasing its performance capability. This document reviews calibration data gathered after the upgrade over a five year period (2005-2010) and recommends a new specification of 3.0 + L/250 {micro}m for size, 3.3 {micro}m for probing, and 4.3 {micro}m for scanning. The new equations are an approximate 30% increase in accuracy for size and approximately 5% increase for probing and scanning.

  8. TA-12-1 = 950 Proceedlngrof the 29th Conference

    E-Print Network [OSTI]

    of Electrical Engineering and Computer Engineering University of New Mexico Albuquerque, NM, 87131 USA. Abstract consists of two subnetworks, a recursive net and a nonrecursive one. The outputs of these two networks

  9. DfcSSooo ta Ris-M-2410

    E-Print Network [OSTI]

    , Danmark December 1984 #12;RISØ-M-2410 I S O T O P L A B O R A T O R I E T 1959 - 1984 Kvalitativ og, Danmark #12;ISBN 87-550-0970-0 ISSN 0418-6435 Risø Repro 1984 #12;IHHOLDSFORTEOELSE 25 ARS af Danmarks ferste laboratorium til arbejde ned radioaktive isotoper i sterre møngder; nen desuden

  10. Dual-phase Cr-Ta alloys for structural applications

    DOE Patents [OSTI]

    Liu, Chain T. (Oak Ridge, TN); Brady, Michael P. (Oak Ridge, TN); Zhu, Jiahong (Knoxville, TN); Tortorelli, Peter F. (Knoxville, TN)

    2001-01-01T23:59:59.000Z

    Dual phase alloys of chromium containing 2 to 11 atomic percent tantalum with minor amounts of Mo, Cr, Ti, Y, La, Cr, Si and Ge are disclosed. These alloys contain two phases including Laves phase and Cr-rich solid solution in either eutectic structures or dispersed Laves phase particles in the Cr-rich solid solution matrix. The alloys have superior mechanical properties at high temperature and good oxidation resistance when heated to above 1000.degree. C. in air.

  11. COS NUV TA1 Mirror Specification Date: December 8, 1999

    E-Print Network [OSTI]

    Colorado at Boulder, University of

    Letter ECO No. Description Check Approved Date - Initial Release EW 8-13-99 A COS-024 Changes specified in ECO Original Release THE UNIVERSITY OF COLORADO Name Date At Boulder Drawn: E. Wilkinson 8...................................................................................................... 4 3.5 Shipping & Handling...................................

  12. FUZZY INTERIOR OPERATORS RADIM BELOHLAVEK* and TA N ANA FUNIOKOVA

    E-Print Network [OSTI]

    Belohlavek, Radim

    with fuzzy sets (so called fuzzy closure operators) are studied (Mashour and Ghanim, 1985; Bandler and Kohout studies only (Bandler and Kohout, 1988; Dubois and Prade, 1991; Bodenhofer et al., 2003), and it seems

  13. C3TA11342F 7920..7926

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

    the capacitive current arising from N-OMC-800-3 was much higher than that of a supercapacitor using OMC-800-1 as the electrode at the same scan rate. The rectangular CV shape...

  14. C3TA10710H 9414..9417

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

    conductivity compared to standard OMCs, making these ideal candidates for supercapacitor and rechargeable Li-ion battery electrodes. 11 Despite the many advantages offered...

  15. Microsoft PowerPoint - TA-21_LASO_Rhodes

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011 Strategic2 OPAM615_Cost Estimating Panel MicrosoftSeptember 15, September 15,PublicLand

  16. TA53. Name of Tour: Tour Host and Z#: Date:

    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 SolStrengthening a solid ...SuccessSurprisingSynchrotronsPlasma Physics

  17. Your TA's Name The papers for Physics 108 are a requirement to receive an A in the class. The TA's

    E-Print Network [OSTI]

    Hart, Gus

    of electrical circuit · Magnets and magnetic fields ­ Design of refrigerator magnets (this is actually quite interesting) ­ Magnetic fields in the earth or the sun · Electric and magnetic forces ­ Computer or TV Cathode

  18. B-L Neutrinos

    E-Print Network [OSTI]

    Cahill, K E

    1999-01-01T23:59:59.000Z

    Neutrino masses and mixings are analyzed in terms of left-handed fields and a 6x6 complex symmetric mass matrix whose singular values are the neutrino masses. An angle theta_nu characterizes the kind of the neutrinos, with theta_nu=0 for Dirac neutrinos and theta_nu=pi/2 for Majorana neutrinos. At theta_nu = 0 baryon-minus-lepton number is conserved. If theta_nu is approximately zero, the six neutrino masses coalesce into three nearly degenerate pairs. Thus the tiny mass differences exhibited in the solar and atmospheric neutrino experiments are naturally explained by the approximate conservation of B-L. Neutrinos are nearly Dirac fermions. This B-L model leads to these predictions: neutrinos oscillate mainly between flavor eigenfields and sterile eigenfields, and so neither KARMEN, nor SNO, nor BooNE will detect the appearance of neutrinos or antineutrinos; neutrinos may well be of cosmological importance; in principle the disappearance of the tau neutrino should be observable; and neutrinoless double-beta d...

  19. B-L Neutrinos

    E-Print Network [OSTI]

    Kevin Cahill

    2000-06-19T23:59:59.000Z

    Neutrino masses and mixings are analyzed in terms of left-handed fields and a 6x6 complex symmetric mass matrix whose singular values are the neutrino masses. An angle theta_nu characterizes the kind of the neutrinos, with theta_nu=0 for Dirac neutrinos and theta_nu=pi/2 for Majorana neutrinos. At theta_nu = 0 baryon-minus-lepton number is conserved. If theta_nu is approximately zero, the six neutrino masses coalesce into three nearly degenerate pairs. Thus the tiny mass differences exhibited in the solar and atmospheric neutrino experiments are naturally explained by the approximate conservation of B-L. Neutrinos are nearly Dirac fermions. This B-L model leads to these predictions: neutrinos oscillate mainly between flavor eigenfields and sterile eigenfields, and so the appearance of neutrinos and antineutrinos is suppressed; neutrinos may well be of cosmological importance; in principle the disappearance of the tau neutrino should be observable; and neutrinoless double-beta decay is suppressed by an extra factor of 10^(-5) and so will not be seen in the Heidelberg/Moscow, IGEX, GENIUS, or CUORE experiments.

  20. "Atm o sp h e ric a n d O c e a n ic P ro c e sse s, D y n a m ic s, a n d C lim a te C h a n g e (AE 1 0 9 ) C o n fe re n c e " in "S P IE 's T h ird In te rn a tio n a l Asia -P a c ific E n v iro n m e n ta l R e m o te S e n sin g S y m p o siu m 2 0

    E-Print Network [OSTI]

    Wang, Junhong

    "Atm o sp h e ric a n d O c e a n ic P ro c e sse s, D y n a m ic s, a n d C lim a te C h a n g e (AE 1 0 9 ) C o n fe re n c e " in "S P IE 's T h ird In te rn a tio n a l Asia -P a c ific E n v iro n m e n ta l R e m o te S e n sin g S y m p o siu m 2 0 0 2 : R e m o te S e n sin g o f th e Atm o

  1. NEPA REVIEW LASO-10-002 CATEGORICAL EXCLUSION PAJARITO ROAD RIGHT-OF-WAY SHIFT AT TA-50 AND TA-55

    National Nuclear Security Administration (NNSA)

    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 742EnergyOn AprilA Approved:AdministrationAnalysis andB - H, PageSecuritySecurityREVIEW

  2. Measurement of the B????l?? and B???(')l?? branching fractions, the B????l?? and B???l?? form-factor shapes, and determination of |Vub|

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

    del Amo Sanchez, P.; Lees, J. P.; Poireau, V.; Prencipe, E.; Tisserand, V.; Garra Tico, J.; Grauges, E.; Martinelli, M.; Milanes, D. A.; Palano, A.; Pappagallo, M.; Eigen, G.; Stugu, B.; Sun, L.; Brown, D. N.; Kerth, L. T.; Kolomensky, Yu. G.; Lynch, G.; Osipenkov, I. L.; Koch, H.; Schroeder, T.; Asgeirsson, D. J.; Hearty, C.; Mattison, T. S.; McKenna, J. A.; Khan, A.; Randle-Conde, A.; Blinov, V. E.; Buzykaev, A. R.; Druzhinin, V. P.; Golubev, V. B.; Kravchenko, E. A.; Onuchin, A. P.; Serednyakov, S. I.; Skovpen, Yu. I.; Solodov, E. P.; Todyshev, K. Yu.; Yushkov, A. N.; Bondioli, M.; Curry, S.; Kirkby, D.; Lankford, A. J.; Mandelkern, M.; Martin, E. C.; Stoker, D. P.; Atmacan, H.; Gary, J. W.; Liu, F.; Long, O.; Vitug, G. M.; Campagnari, C.; Hong, T. M.; Kovalskyi, D.; Richman, J. D.; West, C.; Eisner, A. M.; Heusch, C. A.; Kroseberg, J.; Lockman, W. S.; Martinez, A. J.; Schalk, T.; Schumm, B. A.; Seiden, A.; Winstrom, L. O.; Cheng, C. H.; Doll, D. A.; Echenard, B.; Hitlin, D. G.; Ongmongkolkul, P.; Porter, F. C.; Rakitin, A. Y.; Andreassen, R.; Dubrovin, M. S.; Mancinelli, G.; Meadows, B. T.; Sokoloff, M. D.; Bloom, P. C.; Ford, W. T.; Gaz, A.; Nagel, M.; Nauenberg, U.; Smith, J. G.; Wagner, S. R.; Ayad, R.; Toki, W. H.; Jasper, H.; Karbach, T. M.; Petzold, A.; Spaan, B.; Kobel, M. J.; Schubert, K. R.; Schwierz, R.; Bernard, D.; Verderi, M.; Clark, P. J.; Playfer, S.; Watson, J. E.; Andreotti, M.; Bettoni, D.; Bozzi, C.; Calabrese, R.; Cecchi, A.; Cibinetto, G.; Fioravanti, E.; Franchini, P.; Luppi, E.; Munerato, M.; Negrini, M.; Petrella, A.; Piemontese, L.; Baldini-Ferroli, R.; Calcaterra, A.; de Sangro, R.; Finocchiaro, G.; Nicolaci, M.; Pacetti, S.; Patteri, P.; Peruzzi, I. M.; Piccolo, M.; Rama, M.; Zallo, A.; Contri, R.; Guido, E.; Lo Vetere, M.; Monge, M. R.; Passaggio, S.; Patrignani, C.; Robutti, E.; Tosi, S.; Bhuyan, B.; Prasad, V.; Lee, C. L.; Morii, M.; Adametz, A.; Marks, J.; Uwer, U.; Bernlochner, F. U.; Ebert, M.; Lacker, H. M.; Lueck, T.; Volk, A.; Dauncey, P. D.; Tibbetts, M.; Behera, P. K.; Mallik, U.; Chen, C.; Cochran, J.; Crawley, H. B.; Dong, L.; Meyer, W. T.; Prell, S.; Rosenberg, E. I.; Rubin, A. E.; Gritsan, A. V.; Guo, Z. J.; Arnaud, N.; Davier, M.; Derkach, D.; Firmino da Costa, J.; Grosdidier, G.; Le Diberder, F.; Lutz, A. M.; Malaescu, B.; Perez, A.; Roudeau, P.; Schune, M. H.; Serrano, J.; Sordini, V.; Stocchi, A.; Wang, L.; Wormser, G.; Lange, D. J.; Wright, D. M.; Bingham, I.; Chavez, C. A.; Coleman, J. P.; Fry, J. R.; Gabathuler, E.; Gamet, R.; Hutchcroft, D. E.; Payne, D. J.; Touramanis, C.; Bevan, A. J.; Di Lodovico, F.; Sacco, R.; Sigamani, M.; Cowan, G.; Paramesvaran, S.; Wren, A. C.; Brown, D. N.; Davis, C. L.; Denig, A. G.; Fritsch, M.; Gradl, W.; Hafner, A.; Alwyn, K. E.; Bailey, D.; Barlow, R. J.; Jackson, G.; Lafferty, G. D.; Anderson, J.; Cenci, R.; Jawahery, A.; Roberts, D. A.; Simi, G.; Tuggle, J. M.; Dallapiccola, C.; Salvati, E.; Cowan, R.; Dujmic, D.; Sciolla, G.; Zhao, M.; Lindemann, D.; Patel, P. M.; Robertson, S. H.; Schram, M.; Biassoni, P.; Lazzaro, A.; Lombardo, V.; Palombo, F.; Stracka, S.; Cremaldi, L.; Godang, R.; Kroeger, R.; Sonnek, P.; Summers, D. J.; Nguyen, X.; Simard, M.; Taras, P.; De Nardo, G.; Monorchio, D.; Onorato, G.; Sciacca, C.; Raven, G.; Snoek, H. L.; Jessop, C. P.; Knoepfel, K. J.; LoSecco, J. M.; Wang, W. F.; Corwin, L. A.; Honscheid, K.; Kass, R.; Morris, J. P.; Blount, N. L.; Brau, J.; Frey, R.; Igonkina, O.; Kolb, J. A.; Rahmat, R.; Sinev, N. B.; Strom, D.; Strube, J.; Torrence, E.; Castelli, G.; Feltresi, E.; Gagliardi, N.; Margoni, M.; Morandin, M.; Posocco, M.; Rotondo, M.; Simonetto, F.; Stroili, R.; Ben-Haim, E.; Bonneaud, G. R.; Briand, H.; Calderini, G.; Chauveau, J.; Hamon, O.; Leruste, Ph.; Marchiori, G.; Ocariz, J.; Prendki, J.; Sitt, S.; Biasini, M.; Manoni, E.; Rossi, A.; Angelini, C.; Batignani, G.; Bettarini, S.; Carpinelli, M.; Casarosa, G.; Cervelli, A.; Forti, F.; Giorgi, M. A.; Lusiani, A.; Neri, N.; Paoloni, E.; Rizzo, G.; Walsh, J. J.; Lopes Pegna, D.; Lu, C.; Olsen, J.; Smith, A. J. S.; Telnov, A. V.; Anulli, F.; Baracchini, E.; Cavoto, G.; Faccini, R.; Ferrarotto, F.; Ferroni, F.; Gaspero, M.; Li Gioi, L.; Mazzoni, M. A.; Piredda, G.; Renga, F.; Hartmann, T.; Leddig, T.; Schröder, H.; Waldi, R.; Adye, T.; Franek, B.; Olaiya, E. O.; Wilson, F. F.; Emery, S.; Hamel de Monchenault, G.; Vasseur, G.; Yèche, Ch.; Zito, M.; Allen, M. T.; Aston, D.; Bard, D. J.; Bartoldus, R.; Benitez, J. F.; Cartaro, C.; Convery, M. R.; Dorfan, J.; Dubois-Felsmann, G. P.; Dunwoodie, W.; Field, R. C.; Franco Sevilla, M.; Fulsom, B. G.; Gabareen, A. M.; Graham, M. T.; Grenier, P.; Hast, C.; Innes, W. R.; Kelsey, M. H.; Kim, H.; Kim, P.; Kocian, M. L.; Leith, D. W. G. S.; Li, S.; Lindquist, B.; Luitz, S.; Lynch, H. L.

    2011-03-01T23:59:59.000Z

    We report the results of a study of the exclusive charmless semileptonic decays, B???(')l?? and B????l??, undertaken with approximately 464×10? BB¯¯ pairs collected at the ?(4S) resonance with the BABAR detector. The analysis uses events in which the signal B decays are reconstructed with a loose neutrino reconstruction technique. We obtain partial branching fractions for B???l?? and B????l?? decays in three and 12 bins of q², respectively, from which we extract the f+(q²) form-factor shapes and the total branching fractions B(B???l??)=(0.36±0.05stat±0.04syst)×10?? and B(B????l??)=(1.42±0.05stat±0.07syst)×10??. We also measure B(B+??'l??)=(0.24±0.08stat±0.03syst)×10??. We obtain values for the magnitude of the CKM matrix element |Vub| using three different QCD calculations.

  3. HST Observations of BL Lacertae Environments

    E-Print Network [OSTI]

    J. E. Pesce; C. M. Urry; M. O'Dowd; R. Scarpa; R. Falomo; A. Treves

    1999-08-31T23:59:59.000Z

    We analyze images of BL Lacertae objects obtained with the {\\it Hubble Space Telescope} WFPC2 and the F814W filter. The nine objects cover a redshift range of 0.19 to 0.997. The relatively deep images are sufficient to detect galaxies at least one magnitude below M$^{*}_{I}$ (--21.4) and in most cases to three magnitudes below M$^{*}$. Galaxy enhancement over the average background is found around four out of the nine objects. Results for some cases are confirmed by ground-based imaging. In the other cases, the redshifts of the target BL Lac objects may be incorrect or they are truly isolated. These findings reinforce the idea that on average, BL Lac objects are found in regions of above average galaxy density. However, isolated objects apparently can host BL Lac nuclei too, a result that has implications for the processes that trigger/fuel the nuclear activity.

  4. Pulsational models of BL Her stars

    E-Print Network [OSTI]

    M. Di Criscienzo; M. Marconi; F. Caputo; S. Cassisi

    2007-12-05T23:59:59.000Z

    We present an updated and homogeneous pulsational scenario for a wide range of stellar parameters typical of BL Her stars i.e., Population II Cepheids with periods shorter than 8 days.

  5. Phase report 1C, TA-21 operable unit RCRA Facility Investigation, Outfalls Investigation

    SciTech Connect (OSTI)

    Not Available

    1994-02-28T23:59:59.000Z

    This phase report summarizes the results of field investigations conducted in 1992 at Technical Area 21 of Los Alamos National Laboratory, as prescribed by the RCRA Facility Investigation work plan for the Technical Area 21 operable unit (also known as OU 1106). This phase report is the last part of a three-part phase report describing the results of field work conducted in 1992 at this operable unit. Phase Report lA, issued on l4 June l993, summarized site geologic characterization activities. Phase report 1B, issued on 28 January 1994, included an assessment of site-wide surface soil background, airborne emissions deposition, and contamination in the locations of two former air filtration buildings. The investigations assessed in Phase Report 1C include field radiation surveys and surface and near-surface sampling to characterize potential contamination at 25 outfalls and septic systems listed as SWMUs in the RFI work plan. Based on the RFI data, it is recommended that no further action is warranted for 8 SWMUs and further action is recommended for 3 SWMUs addressed in this phase report. For 14 SWMUs which represent no immediate threat to human health or environment, deferral of further action/no further action decisions is recommended until outstanding analytical data are received, sampling of adjacent SWMUs is completed, or decisions are made about the baseline risk assessment approach.

  6. Selective oxidation of hydrocarbons in a catalytic dense membrane reactor: Catalytic properties of BIMEVOX (Me = Ta)

    E-Print Network [OSTI]

    Boyer, Edmond

    1 Selective oxidation of hydrocarbons in a catalytic dense membrane reactor: Catalytic properties for syngas or H2 production from light hydrocarbons. #12;2 Keywords: Dense membrane reactor, BIMEVOX, BITAVOX to decouple the two steps of the redox mechanism that prevails in selective oxidation of hydrocarbons [1

  7. 30TH INTERNATIONAL COSMIC RAY CONFERENCE Calibration of TA Surface Detectors

    E-Print Network [OSTI]

    -8582,Japan 2 Graduate School of Science,Osaka City University ,3-3-138 Sugimoto Sumiyoshiku Osaka, 558,USA. The detector consists of two layers of plastic scintillators of 3m2 area with wave length shifter fiber energy cosmic ray particle. In the energy spec- trum measured by the AGASA[1] and HiRes[2] experiments

  8. Mathematics 3C Summer 2009 Worksheet 5, August 20th, TA Grace Kennedy

    E-Print Network [OSTI]

    Akhmedov, Azer

    at 5 liters per minute. The salt water mixes in with the fresh water and the brine exits by a funnel

  9. Titan's ionosphere: Model comparisons with Cassini Ta data T. E. Cravens,1

    E-Print Network [OSTI]

    California at Berkeley, University of

    and measured electron densities along the spacecraft track. Ionization both by solar radiation and by incoming technique [Bird et al., 1997]. Many models of Titan's ionosphere have been constructed over the past decade below the exobase [Waite et al., 2005]. The solar zenith angle (SZA) and latitude at CA were 91

  10. iTA DEC LI STUDI DI 'kih Cc 9erale

    E-Print Network [OSTI]

    Bella, Giampaolo

    -disciplinare GEM 0 "Geofisica della terra solida" dells durata di un anno (rinnovabile), progranuna di ricerca ricerca per il settore scientifico-disciplinare GEO/10 "Geofisica della terra solida" delta durata di un

  11. Operation Manual for the TA Instruments TGA Q-500: Temperature Range: Room Temperature 1000C

    E-Print Network [OSTI]

    Alpay, S. Pamir

    Sample Weight: 10 mg ­ 1 g Platinum Sample Pans are supplied by the lab. 1. If the TGA Q-500 experimental by EQUILIBRATE at 60°C. This will cool the furnace down without collecting data. The instrument is set to cool

  12. LocaL TaLenT GLobaL ImpacT

    E-Print Network [OSTI]

    Müller, Jens-Dominik

    of harnessing wave energy and innovative methods of bringing music to audiences. This is a series of engaging

  13. Materials Data on TaBe12 (SG:139) by Materials Project

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

    Kristin Persson

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

  14. Materials Data on TaMn2 (SG:194) by Materials Project

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

    Kristin Persson

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

  15. Radionuclide concentrations in honey bees from Area G at TA-54 during 1997. Progress report

    SciTech Connect (OSTI)

    Haarmann, T.K.; Fresquez, P.R.

    1998-07-01T23:59:59.000Z

    Honey bees were collected from two colonies located at Los Alamos National Laboratory`s Area G, Technical Area 54, and from one control (background) colony located near Jamez Springs, NM. Samples were analyzed for the following: cesium ({sup 137}Cs), americium ({sup 241}Am), plutonium ({sup 238}Pu and {sup 239,240}Pu), tritium ({sup 3}H), total uranium, and gross gamma activity. Area G sample results from both colonies were higher than the upper (95%) level background concentration for {sup 238}Pu and {sup 3}H.

  16. Efficient Object Exploration and Object Presentation in TeleTA, Teleoperation System with Tactile Feedback

    E-Print Network [OSTI]

    Tachi, Susumu

    Awareness about slave robot collision) designed by us to achieve high level of maneuverability of robot arm controllers endow our robot arm with the distinctive capability of safe interaction with surroundings along of joint torques and contact point coordinates. Master side (Fig. 1(a)) includes exoskeleton robot arm

  17. EP-AREAG-PLAN-1248, R.0 TA-54 Area G Nitrate-Salt Waste Container...

    Office of Environmental Management (EM)

    is operating. Therefore any failure of the system would be known within an hour. If the ventilation system is found to be non-functional, the inspector will notify the Shift...

  18. Experiments on Block Indexing Outi Lehtinen, Erkki Sutinen, Jo.ma Ta.hio

    E-Print Network [OSTI]

    Tarhio, Jorma

    approximatematchesof the givenkeyword. Glimpseapplies hlockindexing.First, the nle systemto be irdexed is dividedinto,weintroducea variationofGlimpse,calledGra,npsefor GRAM bded Patten SEarch.Insteadof indexingwords

  19. Microsoft Word - 00 Cover Page CP Change Forms TA as of 3-18...

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

    identifying parallel modifications to the Hanford Facility Resource Conservation and Recovery Act (RCRA) Permit. Tentative agreement has been reached and proposed change packages...

  20. ORIGINAL PAPER NbTa fractionation by partial melting at the titaniterutile

    E-Print Network [OSTI]

    , Chinese Academy of Sciences, PO Box 9825, Beijing 100029, China 123 Contrib Mineral Petrol (2011) 161

  1. Materials Data on TaTc (SG:221) by Materials Project

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

    Kristin Persson

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

  2. CESR Conversion Damping Ring Studies of Electron Cloud Instabilities (CESR-TA)

    SciTech Connect (OSTI)

    Rubin, David L.; Palmer, Mark A.

    2011-08-02T23:59:59.000Z

    In the International Linear Collider, two linear accelerators will accelerate bunches of positrons and electrons to over a hundred billion electron volts and collide them in a central detector. In order to obtain useful collision rates, the bunches, each containing twenty billion particles, must be compressed to a cross section of a few nanometers by a few hundred nanometers. In order to prepare these ultra high density bunches, damping rings (DRs) are employed before the linear accelerators. The DRs take the high emittance bunches that are provided by the electron and positron sources and, through the process of radiation damping, squeeze them into ultra low emittance beams that are ready for the main linear accelerators. In the damping rings, a number of effects can prevent the successful preparation of the beams. In the electron ring, an effect known as the fast ion instability can lead to beam growth and, in the positron ring, the build-up of an electron cloud (EC), which interacts with the circulating bunches, can produce the same effect. EC build-up and the subsequent interaction of the cloud with the positron beam in the DR have been identified as major risks for the successful construction of a linear collider. The CESRTA research program at the Cornell Electron Storage Ring (CESR) was developed in order to study the build-up of the EC, the details of its impact on ultra low emittance beams, as well as methods to mitigate the impact of the cloud. In the DR, the EC forms when synchrotron photons radiated from the circulating beam strike the walls of the vacuum chamber, resulting in the emission of photoelectrons. These low energy electrons can be accelerated across the vacuum chamber by the electric field of the beam, and strike the walls, causing the emission of secondary electrons. The secondary electrons are subsequently accelerated into the walls yet again via the same mechanism. The result is that the EC can rapidly begin to fill the vacuum chamber. In an electron DR, the EC build-up is limited by the Coulomb repulsion. But in a positron ring, the electrons are pulled into the potential well of the beam. The resulting interaction of the circulating bunches of positrons with the EC that ultimately limits DR performance. Typically we store long trains of closely space bunches in the damping ring. The interaction of stored beam and the EC that is generated by the long train is manifested by different mechanisms: (1) The cloud focuses the beam, which causes a tune shift that increases along the bunch train as the cloud density increases. (2) The cloud electrons couple the motion of bunches along a train. Transverse motion of a leading bunch is transferred to the cloud, and subsequently to a trailing bunch which can result in a multi-bunch instability. (3) The cloud couples the positrons in the head of the bunch to those in the tail of the same bunch, which can excite a 'head-tail' instability. (4) The nonlinear fields of the EC can lead to emittance growth before the onset of instabilities. The CESRTA collaboration, which includes researchers from Cornell University's Laboratory for Elementary-Particle Physics as well as more than 50 senior staff members from over a dozen accelerator laboratories and universities around the world, has operated CESR as a damping ring for the past three years to study these EC effects. A range of specialized instrumentation has been deployed to study the local build-up of the cloud in the vacuum chambers as well as the complicated dynamics exhibited when the beam and the EC interact. The program has significantly advanced our understanding of these issues and has helped identify the most promising methods to mitigate the impact of the EC on the DR beams. It has pointed the way towards a DR design that can meet the stringent specifications of the ILC.

  3. EA-1962: Analysis for Below Grade Suspect Transuranic (TRU) Waste at Technical Area (TA)-54

    Broader source: Energy.gov [DOE]

    DOE is preparing an EA to evaluate the legacy suspect transuranic (TRU) waste at Area G for the purposes of reclassification of waste type and determination of a final disposal path. Per DOE Order 435.1, Change 1, Radioactive Waste Management, and its associated guide, legacy waste at Los Alamos National Laboratory that contained TRU waste was stored and managed as TRU waste. The waste was given an interim classification for the purposes of applying the most restrictive standard until the waste could be adequately characterized and a final determination on the disposition classification was made.

  4. Monitoring inspections of ICP program ECM and TA grantees. Final report

    SciTech Connect (OSTI)

    Not Available

    1983-03-01T23:59:59.000Z

    The activities undertaken to review DOE grants to schools, hospitals and municipalities under the Institutional Conservation Program (ICP) are reported. This Final Report is the result of a review of statistics and findings gathered over the period of the contract. It is intended to highlight aspects of the monitoring project and to make recommendations. This report is organized into four sections: the steps taken in organizing and implementing the review; statistics regarding the 92 grants reviewed; some of the common factors which fostered success or problems in the administration of the ICP grants; and recommendations.

  5. Ultrathin ta-C films on heads depositied by twist-filtered cathodic arc carbon plasmas

    E-Print Network [OSTI]

    Anders, Andre; Ryan, Francis W.

    2000-01-01T23:59:59.000Z

    was supported through the CRADA BG98-084(01) of the ER-LTRand by CVC-Veeco, the CRADA Industrial Partner. ULTRATHINwas supported through the CRADA BG98- 084(01) of the ER-LTR

  6. Effects of processing on microstructure and properties of Ti-Ta Alloys

    E-Print Network [OSTI]

    Gortikov, Bryan (Bryan S.)

    2008-01-01T23:59:59.000Z

    Titanium-Tantalum shape memory materials have widespread potential in biomedical applications due to their high degree of biocompatibility, favorable mechanical properties, high corrosion resistance and the possibility of ...

  7. Materials Data on TaRu (SG:221) by Materials Project

    SciTech Connect (OSTI)

    Kristin Persson

    2014-11-02T23:59:59.000Z

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

  8. John Ochsendorf Intro to Structural Design Spring 2011 TA: Phil Seaton

    E-Print Network [OSTI]

    Entekhabi, Dara

    Designing for axial forces Wed 9 LAB: Buckling Mon 14 Truss design (Equilibrium HW due) Wed 16 Forces) Wed 30 LAB: Frames/Beam project Mon 4 Indeterminate frames Wed 6 Lateral load systems Wed 6 LAB: Beam

  9. John Ochsendorf Intro to Structural Design Spring 2011 TA: Jennifer Zessin

    E-Print Network [OSTI]

    Entekhabi, Dara

    Wed 9 Designing for axial forces Fri 11 LAB: Buckling Mon 14 Truss design (Equilibrium HW due) Wed 16 HW due) Fri 1 LAB: Frames/Beam project Mon 4 Indeterminate frames Wed 6 Lateral load systems Fri 8

  10. A B C D E F TA OFFICE HOURS -SPRING 2012 -SUITE B

    E-Print Network [OSTI]

    -Sutcliffe 304k Susan Anderson-Shear 301 Sarah Swingle-Sutcliffe 304k 11-12noon Susan Anderson-Shear 301 Andrew-Sessler 310N Andrew Ritchie-354 Susan Anderson-Shear 301 1-2pm Katie Clark-Vanden Bout 302 Iverson-310N Dan Axelrod-McCord 301 Kristin Fathe-Fakhreddine 302 Mary Kim-Walker 302 Kristin Fathe-Fakhreddine 302 5-6pm

  11. Professor Kari Marie Norgaard Course TA: Sam Moore 604 PLC 47A Columbia Hall

    E-Print Network [OSTI]

    that different members of society have different perspectives on environmental problems, ecological damage of damage is increasing. Class Format Environmental problems are not "out there" in the world/535 Environmental Justice Class Meets T, Th 2-3:50 in 142 Columbia Welcome to ENVS 435/535 Environmental Justice

  12. Professor Kari Marie Norgaard Course TA: Wenhui Qui 604 PLC 47A Columbia Hall

    E-Print Network [OSTI]

    that different members of society have different perspectives on environmental problems, ecological damage of damage is increasing. Class Format Environmental problems are not "out there" in the world@uoregon.edu wenhuiq@uoregon.edu Office Hours: Wed 1-3pm Office Hours: Mon 1-3pm 346-8615 ENVS 399: Environmental

  13. Kah-nee-ta Pool & Spa Low Temperature Geothermal Facility | Open Energy

    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 are8COaBulkTransmissionSitingProcess.pdfGetecGtelInteriasIowa: Energy ResourcesKACO

  14. Atmospheric Dispersion and Consequence Analysis at Sandia's TA-V Nuclear Facilities

    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 1112011AT&T, Inc.'s ReplyApplication of Training AprilUnion Call to Make America aWorkshop

  15. Technical Area (TA)-54 Area G Nitrate-Salt Waste Container Response

    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 Strategic2Uranium Transferon the PassingRouting TECFinish LineTaraTechnetiumInstructions

  16. Microsoft Word - 00 Cover Page CP Change Forms TA as of 3-18-10.doc

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)Integrated Codes |IsLove Your HomeOverviewCleanupShipping Form Instructions * How

  17. DOE - Office of Legacy Management -- TA-1 Manhattan Laboratory - NM 11

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA group currentBradleyTableSelling Corp -K LeDowntown Site - MOSuttonPlant - NYTA-1

  18. 3AK RIDGE NATIONAL LABORATORY OPERAiEO BY MARTIN MARIE,TA ENERGY SYSTEMS, INC.

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA group currentBradleyTableSelling Corp -KWatertown Arsenal'.I Y. ,J,.- i - 3AK

  19. Host galaxies and environment of BL Lac objects

    E-Print Network [OSTI]

    J. Heidt

    1998-12-14T23:59:59.000Z

    Since the last meeting on BL Lac objects 10 years ago, BL Lac host galaxies and their cluster environment have gained much attention. Hence, our current knowledge of the properties of BL Lac host galaxies and their cluster environment has improved considerably, which will be reviewed. The importance of future observing programs using (very) large telescopes is briefly outlined.

  20. Four New BL Lac Surveys: Sampling New Populations

    E-Print Network [OSTI]

    S. A. Laurent-Muehleisen; R. H. Becker; W. Brinkmann; J. Siebert; E. D. Feigelson; R. I. Kollgaard; G. D. Schmidt; P. S. Smith

    1998-10-15T23:59:59.000Z

    The advent of large area deep radio and X-ray surveys is leading to the creation of many new BL Lac samples. In particular, the ROSAT All-Sky, Green Bank and FIRST surveys are proving to be rich sources of new BL Lacs. We will discuss the methods used in four independent BL Lac searches based on these surveys. Comparison of the broadband spectral energy distributions of these BL Lacs with those of previously known objects clearly points to the existence of a large previously unrecognized population of objects with characteristics intermediate between those exhibited by Low and High energy peaked BL Lacs.

  1. Are BL Lacertae Objects Beamed QSO Remnants?

    E-Print Network [OSTI]

    E. F. Borra

    1994-08-05T23:59:59.000Z

    This paper considers the hypothesis that BL Lacertae objects (BLLs) are the beamed remnants of Quasi Stellar Objects. The hypothesis explains why BLLs do not undergo the strong evolution seen in other active galactic nuclei since it naturally predicts that the space density of BLLs should increase with cosmic time, as shown by recent observations. Numerical models reproduce, with reasonable parameters, the known redshift and magnitude counts of BL Lac objects. It is assumed that radio-quiet as well as radio-loud quasars are capable of generating jets but that jets are snuffed in young radio-quiet objects and only emerge in aged ones. I argue that the observations allow this assumption.

  2. BATSE observations of BL Lac Objects

    E-Print Network [OSTI]

    V. Connaughton; C. R. Robinson; M. L. McCollough; S. A. Laurent-Muehleisen

    1998-11-07T23:59:59.000Z

    The Burst and Transient Source Experiment (BATSE) on the Compton Gamma-Ray Observatory has been shown to be sensitive to non-transient hard X-ray sources in our galaxy, down to flux levels of 100 mCrab for daily measurements, 3 mCrab for integrations over several years. We use the continuous BATSE database and the Earth Occultation technique to extract average flux values between 20 and 200 keV from complete radio- and X-ray- selected BL Lac samples over a 2 year period.

  3. Dark matter in B-L extended MSSM models

    SciTech Connect (OSTI)

    Khalil, S. [Centre for Theoretical Physics, British University in Egypt, El Sherouk City, Postal No, 11837, P.O. Box 43 (Egypt); Department of Mathematics, Ain Shams University, Faculty of Science, Cairo, 11566 (Egypt); Okada, H. [Centre for Theoretical Physics, British University in Egypt, El Sherouk City, Postal No, 11837, P.O. Box 43 (Egypt)

    2009-04-15T23:59:59.000Z

    We analyze the dark matter problem in the context of the supersymmetric U(1){sub B-L} model. In this model, the lightest neutralino can be the B-L gaugino Z-tilde{sub B-L} or the extra Higgsinos {chi}-tilde{sub 1,2} dominated. We compute the thermal relic abundance of these particles and show that, unlike the lightest neutralino in the MSSM, they can account for the observed relic abundance with no conflict with other phenomenological constraints. The prospects for their direct detection, if they are part of our galactic halo, are also discussed.

  4. Intranight optical variability of radio-quiet BL Lacertae objects

    E-Print Network [OSTI]

    Liu, Yuan; Zhang, Shuang Nan

    2015-01-01T23:59:59.000Z

    Aims: The intranight variation (or microvariation) is a common phenomenon of radio-loud BL Lac objects. However, it is not clear whether the recently found radio-quiet BL Lac objects have the same properties. The occurrence rate of intranight variation is helpful in distinguishing the mechanism of the continuum of radio-quiet BL Lac objects. Methods: We conducted a photometric monitoring of 8 radio-quiet BL Lac objects by Xinglong 2.16m and Lijiang 2.4m telescopes. The differential light curves are calculated between each target and two comparison stars. To qualify the variation, the significance of variation is examined by scaled $F$-test. Results: No significant variation is found in the 11 sessions of light curves of 8 radio-quiet BL Lac objects (one galactic source is excluded). The lack of microvariation in radio-quiet BL Lac objects is consistent with the detection rate of microvariation in normal radio-quiet AGNs, but much lower than that of radio-loud AGNs. This result indicates that the continua of t...

  5. ISSCC94I SESSION6/ CLOCK AND DATARECOVERY I PAPER TA 6.4 TA 6.4: A 6GHz 60mW BiCMOS Phase-LockedLoop

    E-Print Network [OSTI]

    Razavi, Behzad

    . These precautions arc necessaryto suppress static phaseerror in the loopbecause, at these speeds, the outputof typicallyrequireseveralhigh-speed, fully-symmetric mixers and hence large power dissipation[I]. The VCO topoiogy employed here

  6. S TA N D A R D S The California Sun Certified Energy Efficient Home logo consists

    E-Print Network [OSTI]

    . The sun graphic is used to reinforce solar branding. In order to reinforce the branding standard of two parts, the logo type and the surrounding sun graphic. The California Sun Certified is set in New B: 37 Blue pms 299 C: 85 M: 19 Y: 0 K: 0 R: 0 G: 157 B: 220 PMS 123PMS 144 logo Standards PMS 299

  7. S TA N D A R S O U T H C R O U S E A

    E-Print Network [OSTI]

    Mather, Patrick T.

    O SYRACUSE UNIVERSITY MAIN CAMPUS To Interstates 81, 690, and 90 (NYS Thruway). To ComArt, Lampe Downtown Syracuse, Interstates 81, 690, and 90 (NYS Thruway) DIRECTIONS TO THE NANCY CANTOR WAREHOUSE Geology Laboratory 49 Hinds Hall, School of Information Studies 40 Holden Observatory 47 Hoople Building

  8. Estimation of Energy Consumption in SpeedIndependent Control Peter A. Beerel and ChengTa Hsieh and Suhrid Wadekar

    E-Print Network [OSTI]

    . As an alternative, Kudva et al. [7] suggest determining the energy per operation (cycle of activityEstimation of Energy Consumption in Speed­Independent Control Circuits Peter A. Beerel and Cheng Abstract: We describe a technique to estimate the energy consumed by speed­independent asynchronous (clock

  9. Application of the Ta liner technique to produce Ca beams at INFN-Legnaro National Laboratories (INFN-LNL)

    SciTech Connect (OSTI)

    Galatà, A., E-mail: alessio.galata@lnl.infn.it; Sattin, M.; Manzolaro, M.; Martini, D.; Facco, A. [INFN-Legnaro National Laboratories, Legnaro (Pd) (Italy)] [INFN-Legnaro National Laboratories, Legnaro (Pd) (Italy); Tinschert, K.; Spaedtke, P.; Lang, R. [GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt (Germany)] [GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt (Germany); Kulevoy, T. [Institute for Theoretical and Experimental Physics, Moscow (Russian Federation)] [Institute for Theoretical and Experimental Physics, Moscow (Russian Federation)

    2014-02-15T23:59:59.000Z

    The ECR ion sources are able to produce a wide variety of highly charged metallic ion beams thanks to the development of different techniques (ovens, sputtering, direct insertion, metal ions from volatile compounds (MIVOC)). In the case of the ovens, the sticking of the hot vapors on the surface of the plasma chamber leads to high material consumption rates. For elements like Ca, a tantalum liner inserted inside the chamber can be used to limit this phenomenon. The modeling of temperature distribution inside the chamber with and without the liner was carried out with COMSOL-multiphysics code. Results of simulation and the comparison with experiments performed at INFN-Legnaro National Laboratories with Ca beams are discussed.

  10. LAB 7 ENERGY FUTURE IN CALIFORNIA 1. Based on your TA's lecture, analyze briefly the California energy situation.

    E-Print Network [OSTI]

    adds 10-25 percent to your electric bill. Turn off kitchen and bath-ventilating fans after they've done

  11. LAB 7 THE ENERGY CRISIS IN CALIFORNIA 1. Based on your TA's lecture, analyze briefly the California energy situation.

    E-Print Network [OSTI]

    bill. Turn off kitchen and bath-ventilating fans after they've done their job - these fans can blow out

  12. Characterization and refinement of carbide coating formation rates and dissolution kinetics in the Ta-C system

    SciTech Connect (OSTI)

    Rodriguez, P.J.

    1996-10-01T23:59:59.000Z

    The interaction between carbide coating formation rates and dissolution kinetics in the tantalum-carbon system was investigated. The research was driven by the need to characterize carbide coating formation rates. The characterization of the carbide coating formation rates was required to engineer an optimum processing scheme for the fabrication of the ultracorrosion-resistant composite, carbon-saturated tantalum. A packed-bed carburization process was successfully engineered and employed. The packed-bed carburization process produced consistent, predictable, and repeatable carbide coatings. A digital imaging analysis measurement process for accurate and consistent measurement of carbide coating thicknesses was developed. A process for removing the chemically stable and extremely hard tantalum-carbide coatings was also developed in this work.

  13. 64 INDUSTRIAL BIOTECHNOLOGY SPRING 2008 F E AT U R E C O M M E N TA RY

    E-Print Network [OSTI]

    , Indiana has more than 1,600 wood products companies in the primary and secondary sector.1 Because the wood production in Indiana A #12;© GEN PUBLISHING INC., A MARY ANN LIEBERT INC. COMPANY · VOL. 4 NO. 1 · SPRING product supply chain. Logging residues can be partially collected at logging sites. Sawdust and wood

  14. Structural features and melting ranges of several alloys of the system Ni-Mo-WC-TaC-TiCN

    SciTech Connect (OSTI)

    Tret`yakov, V.I.; Timofeeva, S.V.; Cheburaeva, R.F.; Romashov, V.M.; Deryugina, N.A. [All-Russian Institute of Refractory Metals and Hard Alloys, Moscow (Russian Federation)

    1994-11-01T23:59:59.000Z

    Tungsten-free hard alloys (TFHA) based on titanium carbonitride came into broad use in the 1970s and 1980s within the USSR and abroad. Nickel-molybdenum alloys are used as the binder in these materials. Tungsten carbide may be used as one of the alloying components in some cases, the resulting materials being referred to as low-tungsten alloys. At the end of the 1980s, foreign researchers reported that, in addition to tungsten carbide, TFHAs had also been alloyed with carbides of vanadium and tantalum. However, there is currently no data on the structure of such alloys or the mechanism by which each component affects their properties. These alloys are probably more the result of empirical trial and error than systematic theoretical study.

  15. Thermophysical and Mechanical Properties for Ta-8%W-2%Hf (6/30/98 draft for APEX)

    E-Print Network [OSTI]

    California at Los Angeles, University of

    cover gas are required during elevated temperature processing (hot working, welding, etc.). Tantalum has and niobium [3]. All of the Group V-A refractory alloys are ductile at room temperature, whereas the group VI-A refractory alloys (Mo and W) are generally brittle at room temperature. All refractory metals suffer from

  16. FROM THE P PR RE ES SO OL LI IC CI IT TA AT TI IO ON N C CO

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

    with the successor contractor? Answer: We are developing a model based on requirements, governance, contract consolidation, workforce skills analysis and an assessment of current...

  17. Materials Data on TaSi2PH18C6(NCl3)2 (SG:14) by Materials Project

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

    Kristin Persson

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

  18. Department of NanoEngineering: TA/Reader/Tutor Information Please see the UCSD Academic Employment Opportunities web site

    E-Print Network [OSTI]

    Wang, Deli

    . These assistants apprentice the instructors who have access to and responsibility for sensitive course materials to the instructor and the students in the course. These assistants apprentice the instructors who have access apprentice the instructors who have access to and responsibility for sensitive course materials #12;such

  19. The effects of Ta2O5ZnO films as cathodic buffer layers in inverted polymer solar cells

    E-Print Network [OSTI]

    Cao, Guozhong

    in power conversion efficiency. Introduction Organic photovoltaic (OPV) devices have attracted signicant.e. a rapid performance degradation due to the low work function top metal electrode, and an unstable interface between the ITO substrate and HTL;17­19 such a rapid performance degradation is unacceptable

  20. EA-1407: Proposed TA-16 Engineering Complex Refurbishment and Consolidation at Los Alamos National Laboratory, Los Alamos, New Mexico

    Broader source: Energy.gov [DOE]

    This EA evaluates the environmental impacts for the proposal to construct and operate offices, laboratories, and shops within the U.S. Department of Energy Los Alamos National Laboratory's (LANL)...

  1. TA B L E O F C O N T E N T S 03 Message from the Dean

    E-Print Network [OSTI]

    Chen, Tsuhan

    Connected 21 Corporate and Foundation Interactions 23 Alumni Affairs Message # Lecture Series in CS 24 Games and prosperity. It provides new means to monitor the condition of our planet, a "digital skin" for the earth

  2. The newesT addiTion To The UniversiTy of MinnesoTa's BioMedical

    E-Print Network [OSTI]

    Weiblen, George D

    Hitecture Minnesotanovember/december 2011 Magnetic personality #12;The glass-walled public areas of the University as a sculptural piece, can be glimpsed through the layered glass walls of a main corridor. 1 lobby 2 clinical in the U's Biomedical Discovery District. "The brick, precast concrete, and curtain wall vocabulary

  3. REGISTRATION LIST P PR RE ES SO OL LI IC CI IT TA AT TI IO ON

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

    Yes, My Name Yes, Organization Neither sylvie.kramer@areva.com Robert Allan Allan Consulting Large Small Not a Business Yes, My Name Yes,...

  4. Magnetic phases of the quasi-two-dimensional compounds FexCo1-xTa2O6

    E-Print Network [OSTI]

    Boyer, Edmond

    the intraplane exchange interactions by fitting a high-temperature series of the magnetic susceptibility. Here we]. In such structure, Fe2+ or Co2+ cations are located at the corners and center of each unit cell, i.e., at positions, 49100-000 S~ao Crist´ov~ao, SE, Brazil Abstract. We report new results about magnetic properties

  5. instance, SUP and the Ta3 retrotransposon ap-pear to depend more heavily on CpXpG meth-

    E-Print Network [OSTI]

    Biotechnol. 18, 455 (2000). 14. X. Cheng, Annu. Rev. Biophys. Biomol. Struct. 24, 293 (1995). 15. T training grants GM07104 (J.P.J.) and GM07185 (D.Z.), and NIH grant GM29009 (S.H.). We thank C. Hyun, M

  6. al70ni10ti10zr5ta5 amorphous alloy: Topics by E-print Network

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

    Summary: alloy of composition correspond- ing to the metallic components of the superconduct- ing oxides respectivement. Abstract. - Previous quenching experiments on 2212...

  7. 10.1098/rsta.2003.1269 T&T Proof 03TA2005 5 September 2003

    E-Print Network [OSTI]

    Oxford, University of

    Science, University of Oxford, Oxford OX1 3PJ, UK Programming robots and other autonomous systems in the area of cinema post- production (Pollefeys et al. 2000), where analysis of a stored film sequence

  8. CERTIFICATION DOCKET FOR THE F0RhqE.R SITE OF THE RADIOACTIVE LIQUID WASTE TREATMENT PLANT (TA-45)

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA group currentBradleyTableSelling7111A Lithologic and MonitorBayoBuffalo,/

  9. NEPA REVIE\ry LASO-10-001 CATEGORICAL EXCLUSION FUELS RESEARCH LAB AT TA-35.455

    National Nuclear Security Administration (NNSA)

    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 742EnergyOn AprilA Approved:AdministrationAnalysis andB - H, PageSecuritySecurityREVIEWREVIE\ry

  10. EP-AREAG-PLAN-1248, R.0 TA-54 Area G Nitrate-Salt Waste Container Response Instructions

    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 1112011AT&T,Office ofEnergyFinalEnergy Boosts Efforts7 Federal Register /

  11. Magnetic Field Geometry in "Red" and "Blue" BL Lacs

    E-Print Network [OSTI]

    P. Kharb; D. C. Gabuzda; P. Shastri

    2003-01-06T23:59:59.000Z

    We compare the systematics of the magnetic field geometry in the "red" low-energy peaked BL Lacs (LBLs) and "blue" high-energy peaked BL Lacs (HBLs) using VLBI polarimetric images. The LBLs are primarily "radio--selected" BL Lacs and the HBLs are primarily "X-ray selected". In contrast to the LBLs, which show predominantly transverse jet magnetic fields, the HBLs show predominantly longitudinal fields. Thus, while the SED peaks of core-dominated quasars, LBLs and HBLs form a sequence of increasing frequency, the magnetic field geometry does not follow an analogous sequence. We briefly investigate possible connections between the observed parsec-scale magnetic field structures and circular polarization measurements in the literature on various spatial scales.

  12. The gravitational wave spectrum from cosmological B-L breaking

    SciTech Connect (OSTI)

    Buchmüller, W.; Domcke, V.; Kamada, K. [Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg (Germany); Schmitz, K., E-mail: buchmuwi@mail.desy.de, E-mail: valerie.domcke@desy.de, E-mail: kohei.kamada@desy.de, E-mail: kai.schmitz@ipmu.jp [Kavli IPMU (WPI), University of Tokyo, Kashiwa 277-8583 (Japan)

    2013-10-01T23:59:59.000Z

    Cosmological B-L breaking is a natural and testable mechanism to generate the initial conditions of the hot early universe. If B-L is broken at the grand unification scale, the false vacuum phase drives hybrid inflation, ending in tachyonic preheating. The decays of heavy B-L Higgs bosons and heavy neutrinos generate entropy, baryon asymmetry and dark matter and also control the reheating temperature. The different phases in the transition from inflation to the radiation dominated phase produce a characteristic spectrum of gravitational waves. We calculate the complete gravitational wave spectrum due to inflation, preheating and cosmic strings, which turns out to have several features. The production of gravitational waves from cosmic strings has large uncertainties, with lower and upper bounds provided by Abelian Higgs strings and Nambu-Goto strings, implying ?{sub GW}h{sup 2} ? 10{sup ?13}–10{sup ?8}, much larger than the spectral amplitude predicted by inflation. Forthcoming gravitational wave detectors such as eLISA, advanced LIGO, ET, BBO and DECIGO will reach the sensitivity needed to test the predictions from cosmological B-L breaking.

  13. 1H NMR Metabolomics Study of Metastatic Melanoma in C57BL/6J...

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

    NMR Metabolomics Study of Metastatic Melanoma in C57BL6J Mouse Spleen. 1H NMR Metabolomics Study of Metastatic Melanoma in C57BL6J Mouse Spleen. Abstract: Melanoma is a malignant...

  14. Metastatic Melanoma Induced Metabolic Changes in C57BL/6J Mouse...

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

    Metastatic Melanoma Induced Metabolic Changes in C57BL6J Mouse Stomach Measured by 1H NMR Spectroscopy. Metastatic Melanoma Induced Metabolic Changes in C57BL6J Mouse Stomach...

  15. Comments to support the Dipole Dynamical Model (DDM) of Ball Lightning (BL)

    E-Print Network [OSTI]

    V. N. Soshnikov

    2015-06-22T23:59:59.000Z

    I present estimates to justify previously proposed by me heuristic Dipole Dynamical Model (DDM) of Ball Lightning (BL). The movement and energy supplying to the dipole BL are due to the atmospheric electric field. Crucial for the detailed analysis of BL is using the new relation of balance of the force of atmospheric electric field (per unit mass of electron cloud) and dipole forces electrons-ions within BL dipole (per unit mass of BL) as the first necessary condition for the existance of BL as an integer. This model is unique because, unlike existing static models, fundamental condition for the existence of Ball Lightning is its forward motion. The virial theorem limiting BL power does not apply to BL which is not closed system like the Sun or Galaxy systems and is strongly dependent part of the infinitely extended in time and space large system. Stability of BL is due to two free parameters with the fundamental role of thermodynamic non-equilibrium, ionization, recombination and translational movement with energy loss by radiation and also excess volumetric positive charge. Stability of BL is not related to the presence of any external shells. Polarization degree of BL plasma is characterized by polarizability factor {\\gamma}. An example is presented of calculating the stability of option BL. There is also a possible connection of stability BL with statistical distributions of the atmospheric electric field in time and space. Destruction of BL can also occur due to arising kinematical instability at its accelerating (or decelerating) movement. Maximal energy density in BL DDM does not exceed the value Espec<(10(8) - 10(9)) J/m(3). Resulting indefinitely long BL lifetime is also discussed.

  16. Exact Maximum Likelihood estimator for the BL-GARCH model under elliptical distributed

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Exact Maximum Likelihood estimator for the BL-GARCH model under elliptical distributed innovations, Brisbane QLD 4001, Australia Abstract We are interested in the parametric class of Bilinear GARCH (BL-GARCH examine, in this paper, the BL-GARCH model in a general setting under some non-normal distributions. We

  17. Comments to support the Dipole Dynamical Model (DDM) of Ball Lightning (BL)

    E-Print Network [OSTI]

    V. N. Soshnikov

    2015-02-01T23:59:59.000Z

    I present estimates to justify previously proposed by me heuristic Dipole Dynamical Model (DDM) of Ball Lightning (BL). The movement and energy supplying to the dipole BL are due to the atmospheric electric field. Crucial for the detailed analysis of BL is using the new relation of balance of the force of atmospheric electric field (per unit mass of electron cloud) and dipole forces electrons-ions within BL dipole (per unit mass of BL) as the first necessary condition for the existance of BL as an integer. This model is unique because, unlike existing static models, fundamental condition for the existence of Ball Lightning is its forward motion. The virial theorem limiting BL power does not apply to BL which is not closed system like the Sun or Galaxy systems and is strongly dependent part of the infinitely extended in time and space large system. Stability of BL is due to two free parameters with the fundamental role of thermodynamic non-equilibrium, ionization, recombination and translational movement with energy loss by radiation and also excess volumetric positive charge. Polarization degree of BL plasma is characterized by polarizability factor {\\gamma}. An example is presented of calculating the stability of option BL. There is also a possible connection of stability BL with statistical distributions of the atmospheric electric field in time and space. Destruction of BL can also occur due to arising kinematical instability at its accelerating (or decelerating) movement. Maximal energy density in BL DDM does not exceed the value Espec<(10(8) - 10(9)) J/m(3). Resulting indefinitely long BL lifetime is also discussed.

  18. Measurement of the Integrated Faraday Rotations of BL Lac Objects

    E-Print Network [OSTI]

    A. B. Pushkarev

    2003-07-09T23:59:59.000Z

    We present the results of multi-frequency polarization VLA observations of radio sources from the complete sample of northern, radio-bright BL Lac objects compiled by H. Kuhr and G. Schmidt. These were used to determine the integrated rotation measures of 18 objects, 15 of which had never been measured previously, which hindered analysis of the intrinsic polarization properties of objects in the complete sample. These measurements make it possible to correct the observed orientations of the linear polarizations of these sources for the effect of Faraday rotation. The most probable origin for Faraday rotation in these objects is the Galactic interstellar medium. The results presented complete measurements of the integrated rotation measures for all 34 sources in the complete sample of BL Lac objects.

  19. Dark Matter in Supersymmetric U(1){sub B-L} Model

    SciTech Connect (OSTI)

    Khalil, S.; Okada, H. [Centre for Theoretical Physics, British University in Egypt, Cairo, 11837 (Egypt)

    2009-04-17T23:59:59.000Z

    We analyze the dark matter problem in the context of supersymmetric, U(1){sub B-L} model. In this model, the lightest neutalino can be B-L gaugino Z-tilde{sub B-L} or Higgsinos {chi}-tilde{sub 1,2} dominated. We examine the thermal relic abundance of these particles and discuss the prospects for their direct detection if they form part of our galactic halo.

  20. Redshift Limits of BL Lacertae Objects from Optical Spectroscopy

    E-Print Network [OSTI]

    J. D. Finke; J. C. Shields; M. Boettcher; S. Basu

    2007-11-13T23:59:59.000Z

    Context: BL Lacertae objects have been the targets for numerous recent multiwavelength campaigns, continuum spectral variability studies, and theoretical spectral and variability modeling. A meaningful interpretation of the results of such studies requires a reliable knowledge of the objects' redshifts; however, the redshifts for many are still unknown or uncertain. Aims: Therefore, we hope to determine or constrain the redshifts of six BL Lac objects with unknown or poorly known redshifts. Methods: Observations were made of these objects with the MDM 2.4 m Hiltner telescope. Although no spectral features were detected, and thus no redshifts could be measured, lower redshift limits were assigned to the objects based on the expected equivalent widths of absorption features in their host galaxies. Redshifts were also estimated for some objects by assuming the host galaxies are standard candles and using host galaxy apparent magnitudes taken from the literature. Results: The commonly used redshift of $z=0.102$ for 1219+285 is almost certainly wrong, while the redshifts of the other objects studied remain undetermined.

  1. Broadband Spectra and Variability of BL Lacertae in 2000

    E-Print Network [OSTI]

    M. Boettcher; H. D. Aller; M. F. Aller; O. Mang; C. M. Raiteri; M. Ravasio; G. Tagliaferri; H. Teraesranta; M. Villata

    2002-03-21T23:59:59.000Z

    We have organized an extensive multiwavelength campaign on BL Lacertae in the second half of 2000. Simultaneous or quasi-simultaneous observations were taken at radio frequencies, in the optical - carried out by the WEBT collaboration -, in X-rays - using BeppoSAX and RXTE -, and at VHE gamma-rays with the CAT and HEGRA Cherenkov telescope facilities. In this paper, we are presenting first results from this campaign. The WEBT optical campaign achieved an unprecedented time coverage, virtually continuous over several 10 - 20 hour segments, and revealed intraday variability on time scales of ~ 1.5 hours. The X-ray observations of Nov. 1 - 2, 2000, revealed significant variability on similar time scales, and provided evidence for the synchrotron spectrum extending out to ~ 10 keV during that time. At higher energies, the onset of the hard power-law commonly observed in radio-loud quasars and radio-selected BL Lac objects is seen. From the energy-resolved X-ray variability patterns, we find evidence that electron cooling might not be dominated by one single radiation mechanism; rather, a combination of synchrotron and Compton cooling seems to be required.

  2. Broadband Spectra and Variability of BL Lacertae in 2000

    E-Print Network [OSTI]

    Böttcher, M; Aller, M F; Mang, O; Raiteri, C M; Ravasio, M; Tagliaferri, G; Teraesranta, H; Villata, M

    2002-01-01T23:59:59.000Z

    We have organized an extensive multiwavelength campaign on BL Lacertae in the second half of 2000. Simultaneous or quasi-simultaneous observations were taken at radio frequencies, in the optical - carried out by the WEBT collaboration -, in X-rays - using BeppoSAX and RXTE -, and at VHE gamma-rays with the CAT and HEGRA Cherenkov telescope facilities. In this paper, we are presenting first results from this campaign. The WEBT optical campaign achieved an unprecedented time coverage, virtually continuous over several 10 - 20 hour segments, and revealed intraday variability on time scales of ~ 1.5 hours. The X-ray observations of Nov. 1 - 2, 2000, revealed significant variability on similar time scales, and provided evidence for the synchrotron spectrum extending out to ~ 10 keV during that time. At higher energies, the onset of the hard power-law commonly observed in radio-loud quasars and radio-selected BL Lac objects is seen. From the energy-resolved X-ray variability patterns, we find evidence that electron...

  3. Neighborhood socio-economic disadvantage and race/ethnicity as predictors of breast cancer stage at diagnosis

    E-Print Network [OSTI]

    Flores, Yvonne N; Davidson, Pamela L; Nakazono, Terry T; Carreon, Daisy C; Mojica, Cynthia M; Bastani, Roshan

    2013-01-01T23:59:59.000Z

    Diagnosis_2013.pdf. 45. Wells KJ, Battaglia TA, Dudley DJ,Sherman BJ, Freund KM, Battaglia TA: Patient navigation to

  4. POLICY FOR VALIDATING ATTENUATED STRAINS OF BL31 Adopted by COMS on 26 May 2006

    E-Print Network [OSTI]

    Paulsson, Johan

    must take place at BL3 unless lesser containment is approved by COMS. i. Harvard has no BL4 and aliquoted in quantities sufficient for use until the project is completed. This will be the seed stock strains remain attenuated over long periods. a. Vials of Seed Stock and Working Stock derived from Seed

  5. PTG 2010PTG 2010 i i 33 P blP bl 55PTG 2010PTG 2010 vningvning 33 ProblemProblem 55 2 kg of steam at a pressure of 1 bar are contained in a

    E-Print Network [OSTI]

    Zevenhoven, Ron

    PTG 2010PTG 2010 ö iö i 33 P blP bl 55PTG 2010PTG 2010 övningövning 33 ProblemProblem 55 2 kg the internal pressure reaches 10 kPa, the tank walls will collapsewill collapse. a) Sketch a p-v diagram University - TkF Heat Engineering - 20500 Turku Finland 1 2 P blP bl 55ProblemProblem 55 Givet: ( )2 2 kg

  6. High-energy cosmic neutrinos from spine-sheath BL Lac jets

    E-Print Network [OSTI]

    Tavecchio, F

    2014-01-01T23:59:59.000Z

    We recently proposed that structured (spine-sheath) jets associated to BL Lac objects offer a suitable environment for the production of the extragalactic high-energy ($E>100$ TeV) neutrino recently revealed by IceCube. Our previous analysis was limited to low-power BL Lac objects. We extend our preliminary study to the entire BL Lac population. We assume that the power of cosmic rays as well as the radiative luminosity of the sheath depend linearly on the the jet power. In turn, we assume that the latter is well traced by the $\\gamma$-ray luminosity. We exploit the BL Lac $\\gamma$-ray luminosity function and its cosmic evolution as recently inferred from Fermi-LAT data to derive the expected neutrino cumulative intensity from the entire BL Lac population. When considering only the low-power BL Lacs, a large cosmic ray power for each source is required to account for the neutrino flux. Instead, if BL Lacs of all powers produce neutrinos, the power demand decreases, and the required cosmic ray power becomes of...

  7. Commissioning of BL 7.2, the new diagnostic beam line at the ALS

    E-Print Network [OSTI]

    2004-01-01T23:59:59.000Z

    COMMISSIONING OF BL 7.2, THE NEW DIAGNOSTIC BEAM LINE AT THEring in August 2003 and commissioning with the ALS electronafter. In this paper the commissioning results are presented

  8. Studies of Secondary Melanoma on C57BL/6J Mouse Liver Using 1H...

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

    melanoma in C57BL6J mouse liver . The melanoma group can be differentiated from its control group by PCA analysis of the absolute concentrations or by the absolute peak...

  9. High-Resolution Radio Imaging of Gravitational Lensing Candidates in the 1 Jansky BL Lac Sample

    E-Print Network [OSTI]

    T. A. Rector; J. T. Stocke

    2003-02-19T23:59:59.000Z

    While BL Lacertae objects are widely believed to be highly beamed, low-luminosity radio galaxies, many radio-selected BL Lacs have extended radio power levels and optical emission lines that are too luminous to be low-luminosity radio galaxies. Also, Stocke & Rector discovered an excess of MgII absorption systems along BL Lac sightlines compared to quasars, suggesting that gravitational lensing may be another means of creating the BL Lac phenomenon in some cases. We present a search for gravitationally-lensed BL Lacs with deep, high-resolution, two-frequency VLA radio maps of seven lensing candidates from the 1 Jansky BL Lac sample. We find that none of these objects are resolved into an Einstein ring like B 0218+357, nor do any show multiple images of the core. All of the lensing candidates that were resolved show a flat-spectrum core and very unusual, steep-spectrum extended morphology that is incompatible with a multiply lensed system. Thus, while these observations do not rule out microlensing, no macrolensing is observed.

  10. i 0 S'lectrise + celui des deux corps chimique1nent identiques en contact, lJour lequel la densit superficielle (nombrede molcules ta-

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    superficielle de l'électrolyte est moindre que celle de l'électrode (d2 ~ dit avoir ~2 > °1' ce qui est Peltiereffektes bei Eisen Kupfeil (Sur le point d'inversion de l'effet Peltier au contact fer-cuivre). - P. 34.1051/jphystap:019080070053101 #12;532 suivant qu'on suppose la température d'inversion de l'effet Peltier plus

  11. T.A. Clair, I.F. Dennis and B.J. Cosby Hydrology and Earth System Sciences, 7(4), 574582 (2003) EGU

    E-Print Network [OSTI]

    Boyer, Edmond

    announced by the Canadian and US governments based on commitments under Canadas Post-2000 acid rain Strategy Atlantic Canada, located in the extreme north-eastern portion of North America, receives acid precipitation from all major acid emission sources on the eastern part of the continent. The region was glaciated

  12. ON A POWDER CONSOLIDATION PROBLEM PIERRE A. GREMAUD \\Lambda , C.T. KELLEY y , T.A. ROYAL z , AND KRISTY A. COFFEY x

    E-Print Network [OSTI]

    Mechanics in general and the study of landfills in particular. By a powder, we mean a material consisting]. If the particles are much larger, then the gas can circulate nearly freely between them and thus

  13. SJSU Information Support Services Rehire a Part-Time Temporary Faculty, TA or GA info-support@sjsu.edu, 408-924-1530 Page 1

    E-Print Network [OSTI]

    Su, Xiao

    of the contract. Contract Desc Enter a name for the contract. Include the Last Name, Dept Name and Term. Example of the field, position data will populate. Term Enter term in a four-digit format. Example: 2054 = Fall 2005 if the person is a Late Start or Early Termination. (Enter L for Late Start. Enter E for Early Term). Number

  14. 2 0 1 3 N e w s l e t t e r ta b l e o f C o N t e N t s

    E-Print Network [OSTI]

    Straight, Aaron

    Studies alums have written for such popular television shows as "The Office" and "Family Guy," and report services to lift families out of poverty; that seek solutions to the global problems of mass atrocities

  15. Experimental observation of ion beams in the Madison Helicon eXperiment Matt Wiebold, Yung-Ta Sung, and John E. Scharer

    E-Print Network [OSTI]

    Scharer, John E.

    observed in an expanding magnetic field in several heli- con sources.1­12 These double layers form without a net cur- rent through the DL.16­18 Ions traverse the potential structure of the double layer and gain2­5 was one of the first to observe a current-free double layer in an expanding helicon source

  16. Ion acceleration in a helicon source due to the self-bias effect Matt Wiebold, Yung-Ta Sung, and John E. Scharer

    E-Print Network [OSTI]

    Scharer, John E.

    (pn expanding argon plasmas in the Madison Helicon eXperiment (MadHeX). The potential, resulting in a zero net time-averaged current through the acceleration region when an insulating upstream. INTRODUCTION Recent observation of double layers and accelerated ions in the expanding plume region of helicon

  17. THE IASA 10 MeV CW-LINAC E. Stiliaris, D. Baltadoros, S. Cohen, D. Economou, T.A. Filippas, E.N. Gazis, N. Giokaris,

    E-Print Network [OSTI]

    Athens, University of

    a realistic test facility for all subsystems (power station, klystron, wave-guiding, chiller, control

  18. 2011-02-15 13.04 U_S_ Dept of Energy_s EECBG_SEP TA Program Webinar...

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

    the grantee. I often, in seminars that I've worked on in the past with Department of Energy, I present a three- or four-hour program on how to draft all of the legal documents,...

  19. 132OUTlHIWlET FOlRlET & lRANGlE lEXlPlElfUMlENT TA'JWN

    E-Print Network [OSTI]

    Standiford, Richard B.

    heat treatment and water repellency. The water repellency in watershed soils appears to be produced sand acqu~red a marked resist- ance to wetting after the burning treatment. Formation of Non not penetrate the soil immediately. Instead, the water drop- lets may "ball-up " (fig. 1) . This characteristic

  20. 2.0 C O N TA M I NA N T S O U RC E S by Eric R. McGreer and Wayne Belzer

    E-Print Network [OSTI]

    such as polycyclic aromatic hydrocarbons (PAHs), chlorinated phenolics, dioxins, furans and pesticides. The major water in the pre-Fraser River Action Plan (FRAP) era. The relative impor- tance of these sources likely). Assuming future industrial expansion does not result in large increases of water use, the WWTPs will become

  1. www.ScienceTranslationalMedicine.org 23 May 2012 Vol 4 Issue 135 135cm6 1 CO M M E N TA R Y

    E-Print Network [OSTI]

    Knipe, David M.

    the diverse responsibilities of a demanding, multifaceted career path and for ensuring that I maintain-immunology or hematology-oncology and then practice as a clinician-investigator. Now an intern in pediat- rics, I plan-investigator role mod- els, and as I progress along my own career path, I actively seek out advice on how best

  2. Bruce hiLL is aN amiabLe feLLow, taLKing aBout the intricate

    E-Print Network [OSTI]

    a device called ages (automated gas envi- ronment system). in the process, he collaborated with a group, Bruce was building a device that would allow users of the sns powder diffractometer to direct gases

  3. Fabrication of large-volume, low-cost ceramic lanthanum halide scintillators for gamma ray detection : final report for DHS/DNDO/TRDD project TA-01-SL01.

    SciTech Connect (OSTI)

    Boyle, Timothy J.; Ottley, Leigh Anna M.; Yang, Pin; Chen, Ching-Fong; Sanchez, Margaret R.; Bell, Nelson Simmons

    2008-10-01T23:59:59.000Z

    This project uses advanced ceramic processes to fabricate large, optical-quality, polycrystalline lanthanum halide scintillators to replace small single crystals produced by the conventional Bridgman growth method. The new approach not only removes the size constraint imposed by the growth method, but also offers the potential advantages of both reducing manufacturing cost and increasing production rate. The project goal is to fabricate dense lanthanum halide ceramics with a preferred crystal orientation by applying texture engineering and solid-state conversion to reduce the thermal mechanical stress in the ceramic and minimize scintillation light scattering at grain boundaries. Ultimately, this method could deliver the sought-after high sensitivity and <3% energy resolution at 662 keV of lanthanum halide scintillators and unleash their full potential for advanced gamma ray detection, enabling rapid identification of radioactive materials in a variety of practical applications. This report documents processing details from powder synthesis, seed particle growth, to final densification and texture development of cerium doped lanthanum bromide (LaBr{sub 3}:Ce{sup +3}) ceramics. This investigation demonstrated that: (1) A rapid, flexible, cost efficient synthesis method of anhydrous lanthanum halides and their solid solutions was developed. Several batches of ultrafine LaBr{sub 3}:Ce{sup +3} powder, free of oxyhalide, were produced by a rigorously controlled process. (2) Micron size ({approx} 5 {micro}m), platelet shape LaBr{sub 3} seed particles of high purity can be synthesized by a vapor phase transport process. (3) High aspect-ratio seed particles can be effectively aligned in the shear direction in the ceramic matrix, using a rotational shear-forming process. (4) Small size, highly translucent LaBr{sub 3} (0.25-inch diameter, 0.08-inch thick) samples were successfully fabricated by the equal channel angular consolidation process. (5) Large size, high density, translucent LaBr{sub 3} ceramics samples (3-inch diameter, > 1/8-inch thick) were fabricated by hot pressing, demonstrating the superior manufacturability of the ceramic approach over single crystal growth methods in terms of size capability and cost. (6) Despite all these advances, evidence has shown that LaBr{sub 3} is thermally unstable at temperatures required for the densification process. This is particularly true for material near the surface where lattice defects and color centers can be created as bromine becomes volatile at high temperatures. Consequently, after densification these samples made using chemically prepared ultrafine powders turned black. An additional thermal treatment in a flowing bromine condition proved able to reduce the darkness of the surface layer for these densified samples. These observations demonstrated that although finer ceramic powders are desirable for densification due to a stronger driving force from their large surface areas, the same desirable factor can lead to lattice defects and color centers when these powders are densified at higher temperatures where material near the surface becomes thermally unstable.

  4. Crystal structure and antiferromagnetic ordering of quasi-2D [Cu(HF{sub 2})(pyz){sub 2}]TaF{sub 6} (pyz = pyrazine).

    SciTech Connect (OSTI)

    Manson, J. L.; Schlueter, J. A.; McDonald, R. D.; Singleton, J.; Materials Science Division; Eastern Washington Univ.; LANL

    2010-04-01T23:59:59.000Z

    The crystal structure of the title compound was determined by X-ray diffraction at 90 and 295 K. Copper(II) ions are coordinated to four bridging pyz ligands to form square layers in the ab-plane. Bridging HF{sub 2}{sup -} ligands join the layers together along the c-axis to afford a tetragonal, three-dimensional (3D) framework that contains Taf{sub 6}{sup -} anions in every cavity. At 295 K, the pyz rings lie exactly perpendicular to the layers and cooling to 90 K induces a canting of those rings. Magnetically, the compound exhibits 2D antiferromagnetic correlations within the 2D layers with an exchange interaction of -13.1(1) K. Weak interlayer interactions, as mediated by Cu-F-H-F-Cu, leads to long-range magnetic order below 4.2 K. Pulsed-field magnetization data at 0.5 K show a concave curvature with increasing B and reveal a saturation magnetization at 35.4 T.

  5. An investigation of current noise measurement on hybrid Ta?N-Cr-Au thin film resistors and their relationship to film adhesion 

    E-Print Network [OSTI]

    Bibeau, Wayne Edward

    1978-01-01T23:59:59.000Z

    for drawing a graph, the data sheets have been included for sample 347-13 69-2 in the 350 C group. The condition of the gold contact films has been included on each graph as a reason for terminating the experiment for each sample. 24 200 C Sam le Gra hs... tE -20 M o a -30 -40 0 1 2 3 4 5 6 7 8 9 HOURS EXPOSURE TO GOLD ETCH AMBIENT Fig. 16. Sample 346-21 75-2. Noise Index as a function of exposure to gold etch ambient. 39 +10 350 C Sample Termination: Edge Peeling ? 10 CI z H -20 M O...

  6. First-principles Investigation of B-site Ordering in Ba(Mgx,Ta1-x)O3 Microwave Dielectrics with the Complex Perovskite Structure

    E-Print Network [OSTI]

    Ceder, Gerbrand

    , far infrared reflection spectroscopy4) , lattice vibrations5) , phase transitions6,7) , ionic model and near-zero temperature coefficient of resonant frequency (TCf). The complex perovskite A(B'1/3,B"2/3)O3), moderate dielectric constant (r~24) and near-zero TCf15,16) . BMT has been put to practical use

  7. Return-on-investment indicators for energy program evaluation. Results of the technical review of TA reports and grant applications: Cycle VII - ICP. Final report

    SciTech Connect (OSTI)

    Not Available

    1985-09-17T23:59:59.000Z

    The state of Michigan technical review evaluted about forty-five grantees. The reviewers at the state level seem to have screened out bad submissions or illogical calculation sequences. Michigan reviewers were careful to a fault, and at times had gone through and recalculated many of the smaller energy savings ECM's so that the submission could in fact progress towards the federal level at an appropriate speed. The depth of analysis was very good and the coverage was certainly adequate. There were no submissions in the state of Michigan which warrant detailed commentary about their lack of any part of the submission. The state of Indiana had approximately 33 grantee submissions. The federal level technical review looked at each and every submission to see if it met criteria and calculation adequacy. In many cases the state of Indiana showed evidence of not having had adequate state review. Certainly there were no marks, corrections of any kind in most of the submitted documentation. It is apparent that the state of Indiana will warrant continuous evaluation over the next few cycles in order to upgrade their overall review of their grants. It is suggested that some help be given to the Indiana review agency. The technical reviewers for Cycle VII suggest a continuation of the review process for Indiana, and some additional support to aid them in the review function at the state level to insure that the state reviewers are not skimming the projects at an inadequate level.

  8. EA-0874: Low-level Waste Drum Staging Building at Weapons Engineering Tritium Facility, TA-16 Los Alamos National Laboratory, Los Alamos, New Mexico

    Broader source: Energy.gov [DOE]

    This EA evaluates the environmental impacts of a proposal to place a 3 meter (m) by 4.5 m prefabricated storage building (transportainer) adjacent to the existing Weapons Engineering Tritium...

  9. Panegyrics in Honor of Sakya Pandita (Cho rje sa skya pan+Di ta la bod kyi mkhas pa rnams kyis bstod pa)

    E-Print Network [OSTI]

    Tulku, Mynak R

    1968-11-12T23:59:59.000Z

    of the ocean of Sciences, Seized with the treasure island of Sermon, With reputation decorating the ears of all, (Thou) Sakyapa wonderous object of praise. '2. By knowledge (Thou) seest the Truth of all Wisdom, Out of love (Thou) entertainest the living...

  10. An investigation of current noise measurement on hybrid Ta?N-Cr-Au thin film resistors and their relationship to film adhesion

    E-Print Network [OSTI]

    Bibeau, Wayne Edward

    1978-01-01T23:59:59.000Z

    after approximately 5. 0 hours of exposure to the gold etch ambient. Therefore, the decision was made to implement this controlled procedure of "de-adhesion" for the noise studies on the thin film resistor samples. 21 At first this contaminating... The results for each sample of this study are shown as a graph of noise index versus hours exposure to the gold etch ambient. The entire set of 28 graphs has been divided 0 into two process groups: one for the 200 C samples and one for the 350 C samples...

  11. Andromeda: A mission to determine the gamma-ray burst distance scale F.A. Harrison, W.R. Cook, T.A. Prince, S.M. Schindler

    E-Print Network [OSTI]

    Prince, Thomas A.

    Andromeda: A mission to determine the gamma-ray burst distance scale F.A. Harrison, W.R. Cook, T was submitted to the STEDI program, and will also be proposed as a NASA Small Explorer. Keywords: bursts, gamma-rays, small missions 1 SCIENTIFIC OBJECTIVES 1.1 Gamma-ray Bursts Gamma-ray bursts GRBs were discovered

  12. All-metallic electrically gated 2H-TaSe2 thin-film switches and logic circuits J. Renteria,1

    E-Print Network [OSTI]

    off, and the single-atom thickness of graphene leaves it susceptible to radiation damage.18 non-linear current-voltage characteristics, unusual optical response, and electrical gating at room radiation-hard all-metallic logic circuits. These results may open new application space for thin films

  13. First Principles Study on Ta3N5:Ti3O3N2 Solid Solution As a Water-Splitting Photocatalyst

    E-Print Network [OSTI]

    Ceder, Gerbrand

    solution are predicted to be bracketing the water redox levels, so the photocatalysis process photocatalytic water splitting system based on TiO2 and Pt in 1972 by Fujishima and Honda,1,2 the photocatalysis

  14. Refereed Publications/Journals Cassidy, T.A., C.P. Paranicas, J.H. Shirley, J.B. Dalton, B.T. Teolis, R.E. Johnson,

    E-Print Network [OSTI]

    Johnson, Robert E.

    .E. Johnson, B.A. Larsen, D.J. Lawrence8, D.J. McComas, E. Möbius1, D.B. Reisenfeld, D. Rodriguez, N.1007/s11214-011-9850-4 (2012). Coates, A.J., A. Wellbrock, G.R. Lewis, C.S. Arridge, F.J. Crary, D

  15. TUNGSTEN ISOTOPIC COMPOSITIONS IN STARDUST SiC GRAINS FROM THE MURCHISON METEORITE: CONSTRAINTS ON THE s-PROCESS IN THE Hf-Ta-W-Re-Os REGION

    SciTech Connect (OSTI)

    Avila, Janaina N.; Ireland, Trevor R.; Holden, Peter [Research School of Earth Sciences, Australian National University, Canberra, ACT 0200 (Australia); Lugaro, Maria; Buntain, Joelene [Centre for Stellar and Planetary Astrophysics, Monash University, Clayton, VIC 3800 (Australia); Gyngard, Frank; Zinner, Ernst; Amari, Sachiko [Laboratory for Space Sciences and the Department of Physics, Washington University, One Brookings Drive, St. Louis, MO 63130 (United States); Cristallo, Sergio [Departamento de Fisica Teorica y del Cosmos, Universidad de Granada, Granada 18071 (Spain); Karakas, Amanda, E-mail: janaina.avila@anu.edu.au [Mount Stromlo Observatory, Australian National University, Weston Creek, ACT 2611 (Australia)

    2012-01-01T23:59:59.000Z

    We report the first tungsten isotopic measurements in stardust silicon carbide (SiC) grains recovered from the Murchison carbonaceous chondrite. The isotopes {sup 182,183,184,186}W and {sup 179,180}Hf were measured on both an aggregate (KJB fraction) and single stardust SiC grains (LS+LU fraction) believed to have condensed in the outflows of low-mass carbon-rich asymptotic giant branch (AGB) stars with close-to-solar metallicity. The SiC aggregate shows small deviations from terrestrial (= solar) composition in the {sup 182}W/{sup 184}W and {sup 183}W/{sup 184}W ratios, with deficits in {sup 182}W and {sup 183}W with respect to {sup 184}W. The {sup 186}W/{sup 184}W ratio, however, shows no apparent deviation from the solar value. Tungsten isotopic measurements in single mainstream stardust SiC grains revealed lower than solar {sup 182}W/{sup 184}W, {sup 183}W/{sup 184}W, and {sup 186}W/{sup 184}W ratios. We have compared the SiC data with theoretical predictions of the evolution of W isotopic ratios in the envelopes of AGB stars. These ratios are affected by the slow neutron-capture process and match the SiC data regarding their {sup 182}W/{sup 184}W, {sup 183}W/{sup 184}W, and {sup 179}Hf/{sup 180}Hf isotopic compositions, although a small adjustment in the s-process production of {sup 183}W is needed in order to have a better agreement between the SiC data and model predictions. The models cannot explain the {sup 186}W/{sup 184}W ratios observed in the SiC grains, even when the current {sup 185}W neutron-capture cross section is increased by a factor of two. Further study is required to better assess how model uncertainties (e.g., the formation of the {sup 13}C neutron source, the mass-loss law, the modeling of the third dredge-up, and the efficiency of the {sup 22}Ne neutron source) may affect current s-process predictions.

  16. Research, Innovation & Economic Development at North Carolina State University ReseaRch Impetus

    E-Print Network [OSTI]

    Langerhans, Brian

    economic opportunities and improve people's lives. "Research is an investment in the future. Basic researchresults Research, Innovation & Economic Development at North Carolina State University XI, NO. 2 FALL 2011 ReseaRch Impetus: economIc RecoveRy #12;TRaNSlaTINg RESEaRCh INTo ECoNomIC gRowTh TaBlE oF Co

  17. The Chemical Compositions of the Type II Cepheids -- The BL Her and W Vir Variables

    E-Print Network [OSTI]

    Thomas Maas; Sunetra Giridhar; David L. Lambert

    2007-06-14T23:59:59.000Z

    Abundance analyses from high-resolution optical spectra are presented for 19 Type II Cepheids in the Galactic field. The sample includes both short-period (BL Her) and long-period (W Vir) stars. This is the first extensive abundance analysis of these variables. The C, N, and O abundances with similar spreads for the BL Her and W Vir show evidence for an atmosphere contaminated with $3\\alpha$-process and CN-cycling products. A notable anomaly of the BL Her stars is an overabundance of Na by a factor of about five relative to their presumed initial abundances. This overabundance is not seen in the W Vir stars. The abundance anomalies running from mild to extreme in W Vir stars but not seen in the BL Her stars are attributed to dust-gas separation that provides an atmosphere deficient in elements of high condensation temperature, notably Al, Ca, Sc, Ti, and $s$-process elements. Such anomalies have previously been seen among RV Tau stars which represent a long-period extension of the variability enjoyed by the Type II Cepheids. Comments are offered on how the contrasting abundance anomalies of BL Her and W Vir stars may be explained in terms of the stars' evolution from the blue horizontal branch.

  18. INFRARED SPECTRAL OBSERVATION OF EIGHT BL LAC OBJECTS FROM THE SPITZER INFRARED SPECTROGRAPH

    SciTech Connect (OSTI)

    Chen, P. S.; Shan, H. G., E-mail: iraspsc@yahoo.com.cn [National Astronomical Observatories/Yunnan Observatory and Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011 (China)

    2011-05-01T23:59:59.000Z

    The Spitzer Infrared Spectrograph (IRS) low-resolution spectra for eight BL Lac objects are presented in this paper. It can be seen that the infrared spectrum of S5 0716+714 shows in the IRS region many emission features that would be from a nearby galaxy. It is also shown that, except for the silicate absorptions around 10 {mu}m for some sources, emission lines in the infrared spectra for the other seven BL Lac objects are indeed very weak or absent. In addition, ignoring the silicate feature, all spectra can be well fitted by a power-law distribution indicative of the emission mechanism of the synchrotron radiation for these BL Lac objects in the IRS region.

  19. TeV-scale gauged B-L symmetry with inverse seesaw mechanism

    SciTech Connect (OSTI)

    Khalil, Shaaban [Center for Theoretical Physics at the British University in Egypt, Sherouk City, Cairo 11837 (Egypt) and Department of Mathematics, Ain Shams University, Faculty of Science, Cairo, 11566 (Egypt)

    2010-10-01T23:59:59.000Z

    We propose a modified version of the TeV-scale B-L extension of the standard model, where neutrino masses are generated through the inverse seesaw mechanism. We show that heavy neutrinos in this model can be accessible via clean signals at the LHC. The search for the extra gauge boson Z{sub B-L}{sup '} through the decay into dileptons or two dileptons plus missing energy is studied. We also show that the B-L extra Higgs boson can be directly probed at the LHC via a clean dilepton and missing energy signal.

  20. Models of Tet-On System with Epigenetic Effects Russ Harmer1

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    : this involves the artificial TF rtTA, activated by binding with doxycycline Doxi. Extracellular doxycycline Doxe and activa- tion of fluorescence: this includes transcription, translation and GFP activation. Doxe Deff --- Doxe + Doxi (1) Doxi Deff --- (2) rtTA + Doxi kf2 ---- kr2 rtTA · Dox (3) rtTA · Dox Sm -- rtTA · Dox

  1. Bleach-Imaged Plasmon Propagation (BlIPP) in Single Gold Nanowires

    E-Print Network [OSTI]

    Zubarev, Eugene

    Bleach-Imaged Plasmon Propagation (BlIPP) in Single Gold Nanowires David Solis, Jr., Wei-Shun Chang approach to visualize propagating surface plasmon polaritons through plasmon-exciton interactions between single gold nanowires and a thin film of a fluorescent polymer. A plasmon polariton was launched

  2. Nuclear emission microscopies B.L. Doyle a,*, D.S. Walsh a

    E-Print Network [OSTI]

    Nuclear emission microscopies B.L. Doyle a,*, D.S. Walsh a , S.N. Renfrow a,b , G. Vizkelethy a,1 Abstract Alternatives to traditional nuclear microprobe analysis (NMA) emerged two years ago with the invention of ion electron emission microscopy (IEEM). With nuclear emission microscopy (NEM) the ion beam

  3. BOUNDARY LAYER (BL) THERMAL EDDIES OVER A PINE FOREST FROM CARES 2010

    E-Print Network [OSTI]

    BOUNDARY LAYER (BL) THERMAL EDDIES OVER A PINE FOREST FROM CARES 2010 Gunnar Senum and Stephen are three thermal eddies, about 250 meters wide, in the boundary layer. These thermal eddies are formed from the solar heating of the surface and help to form the boundary layer. The eddy updrafts are transporting

  4. The $B-L$ Supersymmetric Standard Model with Inverse Seesaw at the Large Hadron Collider

    E-Print Network [OSTI]

    Khalil, S

    2015-01-01T23:59:59.000Z

    We review the TeV scale $B-L$ extension of the Minimal Supersymmetric Standard Model (BLSSM) where an inverse seesaw mechanism of light neutrino mass generation is naturally implemented and concentrate on its hallmark manifestations at the Large Hadron Collider (LHC).

  5. An X-ray jet in the BL Lac S5 2007+777

    E-Print Network [OSTI]

    R. M. Sambruna; D. Donato; C. C. Cheung; F. Tavecchio; L. Maraschi

    2007-07-10T23:59:59.000Z

    The BL Lac S5 2007+777 was observed by us with Chandra, to find the X-ray counterpart to its 18" radio jet, and study its structure. Indeed, a bright X-ray jet was discovered in the 33 ks ACIS-S image of the source. We present its properties and briefly discuss the implications.

  6. Intensive monitoring of the strongly variable BL Lac S5 0716+714

    E-Print Network [OSTI]

    K. Otterbein; M. J. Hardcastle; S. J. Wagner; D. M. Worrall

    1998-01-24T23:59:59.000Z

    The BL Lac object S5 0716+714 was monitored during a multifrequency campaign in 1996. Preliminary analysis of the optical, ROSAT and RXTE data are presented. Strong variability on short time scales was observed. The data suggest an interpretation within a multi-component model.

  7. X-ray Emission of Low-Energy-Peaked BL Lacertae Objects

    SciTech Connect (OSTI)

    Randall, Jill M.; Perlman, Eric S. [Florida Institute of Technology, Department of Physics and Space Sciences, 150 W. University Blvd., Melbourne, FL 32901 (United States)

    2009-12-18T23:59:59.000Z

    Presented here is an analysis of X-ray observations of the following seven low-energy-peaked BL Lacertae objects: BL Lacertae, S5 0716+71, W Comae, 3C 66A, S4 0954+65, OJ 287, and AO 0235+16. The spectral data for these objects were taken from observations by the XMM-Newton and/or Chandra X-ray observatories. These objects are being analyzed in an effort to reanalyze all XMM-Newton and Chandra data of low-energy BL Lacs, similar to the efforts of Perlman et al.[4] for high energy BL Lacs. The objects were studied in an effort to understand the nature of the X-ray and multi-waveband emissions in these objects, study the shape of the spectra, and compare the observations of low-energy-peaked BL Lacs to previous observations of these objects and also to observations of high-energy-peaked BL Lacs. Light curves and spectra were analyzed to look for evidence of spectral variability in the objects and as a comparison to previous research on these objects. Most data shows both synchrotron and Inverse-Compton emission, though only little correlation was seen between the emission strength and the spectral slope. Our data is generally well-fitted to a broken power law model with distinct bimodality seen in the first spectral index (six observations with {Gamma}{sub 1{approx}}0.4 and four observations with {Gamma}{sub 1{approx}}3.0), a break in energy between 0.6 and 1.4 keV, and a second spectral index {Gamma}{sub 2{approx}}2.0. None of the observations showed spectral lines, which is consistent with past results. For S5 0716+71 the XMM-Newton X-ray and optical data, along with radio data obtained from the University of Michigan Radio Astronomy Observatory (UMRAO), a spectral energy distribution was created and peak frequencies were estimated.

  8. National Aeronautics and Space Administration April 2012

    E-Print Network [OSTI]

    .2.4.1. Analytical Tools TA03-20 2.2.4.2. Green Energy Impact TA03-20 2.2.4.3. Multi-Functional Structures TA03-21 2

  9. Peer navigation improves diagnostic follow-up after breast cancer screening among Korean American women: results of a randomized trial

    E-Print Network [OSTI]

    Maxwell, Annette E.; Jo, Angela M.; Crespi, Catherine M.; Sudan, Madhuri; Bastani, Roshan

    2010-01-01T23:59:59.000Z

    1999–2010 30. Freund KM, Battaglia TA, Calhoun E, Dudley DJ,Health Promot Pract 23. Battaglia TA, Roloff K, Posner MA,5):381–386 29. Wells KJ, Battaglia TA, Dudley DJ, Garcia R,

  10. The Optical Polarization Properties of X-ray Selected BL Lacertae Objects

    E-Print Network [OSTI]

    B. T. Jannuzi; P. S. Smith; R. Elston

    1993-08-16T23:59:59.000Z

    We discuss the optical polarization properties of X-ray selected BL Lacertae objects (XSBLs) as determined from three years of monitoring 37 BL Lac objects and candidates. The observed objects include a complete X-ray flux limited sample drawn from the EMS Survey. The majority of the XSBLs classi- fied solely on the appearance of their spectra are members of the class of BL~Lacs since they possess intrinsically polarized and variable continua. The duty cycle of polarized emission from XSBLs is 40\\%. The majority of XSBLs ($\\approx 85$\\%) have preferred polarization position angles on time scales as long as three years. This reflects stability in the geometry of the region emitting the polarized optical emission. We discuss the observed spectral dependence of the degree of polarization and some of the possible mechanisms for producing the observed characteristics. While dilution of the polarized emission by the host galaxy starlight is present in some objects, we demon- strate that the average polarization properties derived from our observations are not drastically affected by this effect. The objects in our monitored sample did not display the larger than one magnitude variations generally used to characterize the optical variability of blazars in general.

  11. Parsec-scale Magnetic-Field Structures in HEAO-1 BL Lacs

    E-Print Network [OSTI]

    P. Kharb; D. Gabuzda; P. Shastri

    2007-11-07T23:59:59.000Z

    We present very long baseline interferometry polarization images of an X-ray selected sample of BL Lacertae objects belonging to the first High Energy Astronomy Observatory (HEAO-1) and the ROSAT-Green Bank (RGB) surveys. These are primarily high-energy-peaked BL Lacs (HBLs) and exhibit core-jet radio morphologies on pc-scales. They show moderately polarized jet components, similar to those of low-energy-peaked BL Lacs (LBLs). The fractional polarization in the unresolved cores of the HBLs is, on average, lower than in the LBLs, while the fractional polarizations in the pc-scale jets of HBLs and LBLs are comparable. However a difference is observed in the orientation of the inferred jet magnetic fields -- while LBL jets are well-known to preferentially exhibit transverse magnetic fields, the HBL jets tend to display longitudinal magnetic fields. Although a `spine-sheath' jet velocity structure, along with larger viewing angles for HBLs could produce the observed magnetic field configuration, differences in other properties of LBLs and HBLs, such as their total radio power, cannot be fully reconciled with the different-angle scenario alone. Instead it appears that LBLs and HBLs differ intrinsically, perhaps in the spin rates of their central black holes.

  12. Tanzania Traditional Energy Development and Environment Organization...

    Open Energy Info (EERE)

    Traditional Energy Development and Environment Organization (TaTEDO) Jump to: navigation, search Name: Tanzania Traditional Energy Development and Environment Organization (TaTEDO)...

  13. National Aeronautics and Space Administration April 2012

    E-Print Network [OSTI]

    -10 2.2.1.6. Key Capabilities TA10-11 2.2.2. Energy Generation and Storage TA10-12 2.2.2.1. Energy Generation TA10-13 2.2.2.2. Energy Storage TA10-13 2.2.2.3. Energy Distribution TA10-14 2.2.2.4. Key Prioritization TA10-23 6.2.1. Top Technical Challenges TA10-23 6.2.2. High Priority Level 3 Technologies TA10

  14. English-Lahu Lexicon

    E-Print Network [OSTI]

    Matisoff, James A.

    2006-01-01T23:59:59.000Z

    eyebrow: m? ?-c? ? (N). m? ?-qu (=mu) (N); eyeglasses — 1.eyeglasses: m? ?-ke w ? m? ?-k? w (N).2. eyeglasses: ma ?-ta (N); m? ?-ta (N). eyelash — eyelash:

  15. Andrea D. Sims The Ohio State University

    E-Print Network [OSTI]

    -des -don -des -Ø -tos -Ø -ides -idon -ides -s -tos -s -ta -ton -ta -ma -matos -ma -mata -maton -mata

  16. New statistical results on the optical IDV data of BL Lac S5 0716+714

    E-Print Network [OSTI]

    Danila, B; Mocanu, G

    2014-01-01T23:59:59.000Z

    This paper reports on the statistical behaviour of the optical IntraDay Variability of BL Lac S5 0716+714. Available IntraDay Variability data in the optical is tested to see whether or not the magnitude is log-normally distributed. It was consistently found that this is not the case. This is in agreement with a previous discussion for data for the same object but in a different observational period. Simultaneously, the spectral slope of the light curves is calculated. The implications of these findings for models which discuss both the location and the source of IntraDay Variability are presented.

  17. Synchrotron and Inverse Compton Variability in the BL Lacertae object S5 0716+714

    E-Print Network [OSTI]

    P. Giommi; E. Massaro; L. Chiappetti; E. C. Ferrara; G. Ghisellini; Minhwan Jang; M. Maesano; H. R. Miller; F. Montagni; R. Nesci; P. Padovani; E. Perlman; C. M. Raiteri; S. Sclavi; G. Tagliaferri; G. Tosti; M. Villata

    1999-09-14T23:59:59.000Z

    We report intensity variations of different spectral components in the BL Lac object S5 0716+714 detected during coordinated BeppoSAX and optical observations in 1996 and 1998. The transition between synchrotron and inverse Compton emission has been clearly detected as sharp X-ray spectral breaks at around 2-3 keV on both occasions. Correlated optical and soft X-ray variability was found during the second BeppoSAX pointing when intensive optical monitoring could be arranged. The hard (Compton) component changed by a factor of 2 between the two observations, but remained stable within each exposure. During events of rapid variability S5 0716+714 showed spectral steepening with intensity, a behaviour rarely observed in BL Lacs. We interpret these findings as the probable consequence of a shift of the synchrotron peak emission from the IR/optical band to higher energies, causing the synchrotron tail to push into the soft X-ray band more and more as the source brightens.

  18. POWERFUL HIGH-ENERGY EMISSION OF THE REMARKABLE BL Lac OBJECT S5 0716+714

    SciTech Connect (OSTI)

    Vittorini, V.; Chen, A. W.; Ferrari, A. [CIFS-Torino, Viale Settimio Severo 3, I-10133, Torino (Italy); Tavani, M.; D'Ammando, F.; Donnarumma, I.; Pacciani, L.; Pucella, G. [INAF/IASF-Roma, Via del Fosso del Cavaliere 100, I-00133 Roma (Italy); Paggi, A.; Cavaliere, A. [University of Rome, 'Tor Vergata', Via della Ricerca Scientifica 1, I-00133 Roma (Italy); Bulgarelli, A. [INAF/IASF-Bologna, Via Gobetti 101, I-40129 Bologna (Italy); Giuliani, A.; Vercellone, S. [INAF/IASF-Milano, Via E. Bassini 15, I-20133 Milano (Italy); Longo, F. [INFN-Trieste, Via Valerio 2, I-34127 Trieste (Italy); Colafrancesco, S.; Giommi, P., E-mail: vittorini@roma2.infn.i [ASDC c/o ESRIN, Via G. Galilei snc, I-00044 Frascati, Roma (Italy)

    2009-12-01T23:59:59.000Z

    BL Lac objects of the intermediate subclass (IBLs) are known to emit a substantial fraction of their power in the energy range 0.1-10 GeV. Detecting gamma-ray emission from such sources provides therefore a direct probe of the emission mechanisms and of the underlying powerhouse. The gamma-ray satellite, AGILE, detected the remarkable IBL S5 0716+714 (z approx = 0.3) during a high state in the period from 2007 September-October, marked by two very intense flares reaching peak fluxes of 200 x 10{sup -8} photons cm{sup -2} s{sup -1} above 100 MeV, with simultaneous optical and X-ray observations. We present here a theoretical model for the two major flares and discuss the overall energetics of the source. We conclude that 0716+714 is among the brightest BL Lac's ever detected at gamma-ray energies. Because of its high power and lack of signs for ongoing accretion or surrounding gas, the source is an ideal candidate to test the maximal power extractable from a rotating supermassive black hole via the pure Blandford-Znajek (BZ) mechanism. We find that during the 2007 gamma-ray flares 0716+714 approached or just exceeded the upper limit set by BZ for a black hole of mass 10{sup 9} M{sub sun}.

  19. Synthetic properties of bright metal-poor variables. II. BL Her stars

    E-Print Network [OSTI]

    M. Di Criscienzo; F. Caputo; M. Marconi; S. Cassisi

    2007-05-18T23:59:59.000Z

    We investigate the properties of the so-called BL Her stars, i.e., Population II Cepheids with periods shorter than 8 days, using updated pulsation models and evolutionary tracks computed adopting a metal abundance in the range of Z=0.0001 to Z=0.004. We derive the predicted Period-Magnitude (PM) and Period-Wesenheit (PW) relations at the various photometric bands and we show that the slopes of these relations are in good agreement with the slopes determined by observed variables in Galactic globular clusters, independently of the adopted M_V(RR)-[Fe/H] relation to get the cluster RR Lyrae-based distance. Moreover, we show that also the distances provided by the predicted PM and PW relations for BL Her stars agree within the errors with the RR Lyrae based values. The use of the predicted relations with W Vir stars, which are Population II Cepheids with periods longer than 8 days, provides no clear evidence for or against a change in the PM and PW slopes around P~10 days.

  20. Site Characterization Data from the U3ax/bl Exploratory Boreholes at the Nevada Test Site

    SciTech Connect (OSTI)

    Bechtel Nevada; U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office

    2005-08-01T23:59:59.000Z

    This report provides qualitative analyses and preliminary interpretations of hydrogeologic data obtained from two 45-degree, slanted exploratory boreholes drilled within the Area 3 Radioactive Waste Management Site (RWMS) at the Nevada Test Site. Borehole UE-3bl-D1 was drilled beneath the U3ax/bl mixed waste disposal unit, and Borehole UE-3bl-U1 was drilled in undisturbed alluvium adjacent to the disposal unit. The U3ax/bl disposal unit is located within two conjoined subsidence craters, U3ax and U3bl, which were created by underground nuclear testing. Data from these boreholes were collected to support site characterization activities for the U3ax/bl disposal unit and the entire Area 3 RWMS. Site characterization at disposal units within the Area 3 RWMS must address the possibility that subsidence craters and associated disturbed alluvium of the chimneys beneath the craters might serve as pathways for contaminant migration. The two boreholes were drilled and sampled to compare hydrogeologic properties of alluvium below the waste disposal unit with those of adjacent undisturbed alluvium. Whether Borehole UE-3bl-D1 actually penetrated the chimney of the U3bl crater is uncertain. Analyses of core samples showed little difference in hydrogeologic properties between the two boreholes. Important findings of this study include the following: No hazardous or radioactive constituents of waste disposal concern were found in the samples obtained from either borehole. No significant differences in physical and hydrogeologic properties between boreholes is evident, and no evidence of significant trends with depth for any of these properties was observed. The values observed are typical of sandy materials. The alluvium is dry, with volumetric water content ranging from 5.6 to 16.2 percent. Both boreholes exhibit a slight increase in water content with depth, the only such trend observed. Water potential measurements on core samples from both boreholes show a large positive potential gradient (water moves upward, via evapotranspiration) for the entire vertical depth. Very little liquid flow occurs through the vadose zone. The direction of flow in the upper vadose zone (approximately the upper 35 meters) is upward, based on unsaturated hydraulic conductivity data, water potential data, and environmental tracer data.

  1. Multiband optical monitoring of the blazars S5 0716+714 and BL Lacertae

    E-Print Network [OSTI]

    C. S. Stalin; Gopal-Krishna; Ram Sagar; Paul J. Wiita; V. Mohan; A. K. Pandey

    2005-12-21T23:59:59.000Z

    We report results of multiband optical monitoring of two well known blazars, S5 0716+714 and BL Lacertae, carried out in 1996 and 2000-01 with an aim to study optical variations on time scales from minutes to hours and longer.The light curves were derived relative to comparison stars present on the CCD frames. Night to night flux variations of >0.1 mag were observed in S5 0716+714 during a campaign of ~2 weeks in 1996.A good correlation between the lightcurves in different optical bands was found for both inter-night and intra-night observations. Two prominent events of intra-night optical variability were detected in S5 0716+714.Each of these rapidly varying segments of the lightcurves trace an exponential flux profile whose rate of variation is the same in both cases. Our long-term monitoring data of S5 0716+714 showed a distinct flare around JD 2451875 which can be identified in the BVRI bands.This flare coincides with the brightest phase recorded during 1994-2001 in the long-term lightcurves reported by Raiteri et al.(2003). No evidence for the bluer when brighter trend was noticed on inter-night and intra-night time scales. On the other hand, our nearly simultaneous multiband observations of BL Lacertae in October 2001 showed flux variations that were not achromatic. This blazar was found to become bluer when brighter on intra-night time scales and there is a hint of the same trend on inter-night time scales. Based on five nights of observations during a week, BL Lacertae showed a peak night-to-night variability of ~0.6 mag in B. Thus, we found that the present observations of the two blazars, reveal a contrasting behaviour in terms of the dependence of spectral hardening with increasing brightness, at least on intra-night, and possibly also on inter-night, time scales.

  2. Commissioning and first results of scanning type EXAFS beamline (BL-09) at INDUS-2 synchrotron source

    SciTech Connect (OSTI)

    Poswal, A. K., E-mail: poswalashwini@gmail.com; Agrawal, A., E-mail: poswalashwini@gmail.com; Yadav, A. K., E-mail: poswalashwini@gmail.com; Nayak, C., E-mail: poswalashwini@gmail.com; Basu, S., E-mail: poswalashwini@gmail.com; Bhattachryya, D.; Jha, S. N.; Sahoo, N. K. [Atomic and Molecular Physics Division, Bhabha Atomic Research Centre, Mumbai -400085 (India); Kane, S. R.; Garg, C. K. [Indus Synchrotrons Utilization Division, Raja Ramanna Centre for Advanced Technology, Indore- 452013 (India)

    2014-04-24T23:59:59.000Z

    An Energy Scanning X-ray Absorption Fine Structure spectroscopy beamline has recently been installed and commissioned at BL-09 bending magnet port of INDUS-2 synchrotron source, Indore. The beamline uses an UHV compatible fixed exit double crystal monochromator (DCM) with two Si (111) crystals. Two grazing incidence cylindrical mirrors are also used in this beamline; the pre-mirror is used as a collimating mirror while the post mirror is used for vertical focusing and higher harmonic rejection. In this beamline it is possible to carry out EXAFS measurements both in transmission and fluorescence mode on various types of samples, using Ionization chamber detectors and solid state drift detector respectively. In this paper, results from first experiments of the Energy Scanning EXAFS beamline are presented.

  3. Measurement of the decay B????l?? and determination of |Vub|

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

    Ha, H.; Won, E.; Adachi, I.; Aihara, H.; Aziz, T.; Bakich, A. M.; Balagura, V.; Barberio, E.; Bay, A.; Belous, K.; Bhardwaj, V.; Bhuyan, B.; Bischofberger, M.; Bondar, A.; Bozek, A.; Bra?ko, M.; Browder, T. E.; Chao, Y.; Chen, A.; Chen, P.; Cheon, B. G.; Chiang, C.-C.; Cho, I.-S.; Cho, K.; Choi, K.-S.; Choi, Y.; Dalseno, J.; Danilov, M.; Doležal, Z.; Drutskoy, A.; Dungel, W.; Eidelman, S.; Gabyshev, N.; Golob, B.; Haba, J.; Hayasaka, K.; Hayashii, H.; Horii, Y.; Hoshi, Y.; Hou, W.-S.; Hsiung, Y. B.; Hyun, H. J.; Iijima, T.; Inami, K.; Itoh, R.; Iwabuchi, M.; Iwasaki, Y.; Joshi, N. J.; Julius, T.; Kang, J. H.; Kawasaki, T.; Kiesling, C.; Kim, H. J.; Kim, H. O.; Kim, M. J.; Kim, S. K.; Kim, Y. J.; Kinoshita, K.; Ko, B. R.; Korpar, S.; Križan, P.; Kuhr, T.; Kumita, T.; Kuzmin, A.; Kwon, Y.-J.; Kyeong, S.-H.; Lange, J. S.; Lee, M. J.; Lee, S.-H.; Li, Y.; Limosani, A.; Liu, C.; Liu, Y.; Liventsev, D.; Louvot, R.; McOnie, S.; Miyabayashi, K.; Miyata, H.; Miyazaki, Y.; Mohanty, G. B.; Mori, T.; Nagasaka, Y.; Nakano, E.; Nakao, M.; Nakazawa, H.; Natkaniec, Z.; Neubauer, S.; Nishida, S.; Nishimura, K.; Nitoh, O.; Nozaki, T.; Ogawa, S.; Ohshima, T.; Okuno, S.; Olsen, S. L.; Pakhlov, P.; Pakhlova, G.; Park, C. W.; Park, H.; Park, H. K.; Pestotnik, R.; Petri?, M.; Piilonen, L. E.; Röhrken, M.; Ryu, S.; Sahoo, H.; Sakai, Y.; Schneider, O.; Schwanda, C.; Schwartz, A. J.; Senyo, K.; Sevior, M. E.; Shapkin, M.; Shen, C. P.; Shiu, J.-G.; Simon, F.; Smerkol, P.; Sohn, Y.-S.; Sokolov, A.; Stani?, S.; Stari?, M.; Sumiyoshi, T.; Teramoto, Y.; Trabelsi, K.; Uehara, S.; Uglov, T.; Unno, Y.; Uno, S.; Vahsen, S. E.; Varner, G.; Varvell, K. E.; Vossen, A.; Wang, C. H.; Wang, M.-Z.; Wang, P.; Watanabe, M.; Watanabe, Y.; Yamashita, Y.; Zhang, Z. P.; Zhou, P.; Zhulanov, V.; Zivko, T.; Zupanc, A.

    2011-04-01T23:59:59.000Z

    We present a measurement of the charmless semileptonic decay B????l?? using a data sample containing 657×10? BB¯ events collected with the Belle detector at the KEKB asymmetric-energy e?e? collider operating near the ?(4S) resonance. We determine the total branching fraction of the decay, B(B????l??) =(1.49±0.04(stat)±0.07(syst))×10??. We also report a new precise measurement of the differential decay rate and extract the Cabibbo-Kobayashi-Maskawa matrix element |Vub| using model-independent and model-dependent approaches. From a simultaneous fit to the measured differential decay rate and lattice QCD results, we obtain |Vub|=(3.43±0.33)×10?³, where the error includes both experimental and theoretical uncertainties.

  4. RAPID TeV GAMMA-RAY FLARING OF BL LACERTAE

    SciTech Connect (OSTI)

    Arlen, T. [Department of Physics and Astronomy, University of California, Los Angeles, CA 90095 (United States)] [Department of Physics and Astronomy, University of California, Los Angeles, CA 90095 (United States); Aune, T.; Bouvier, A. [Santa Cruz Institute for Particle Physics and Department of Physics, University of California, Santa Cruz, CA 95064 (United States)] [Santa Cruz Institute for Particle Physics and Department of Physics, University of California, Santa Cruz, CA 95064 (United States); Beilicke, M.; Buckley, J. H.; Bugaev, V.; Dickherber, R. [Department of Physics, Washington University, St. Louis, MO 63130 (United States)] [Department of Physics, Washington University, St. Louis, MO 63130 (United States); Benbow, W. [Fred Lawrence Whipple Observatory, Harvard-Smithsonian Center for Astrophysics, Amado, AZ 85645 (United States)] [Fred Lawrence Whipple Observatory, Harvard-Smithsonian Center for Astrophysics, Amado, AZ 85645 (United States); Cesarini, A.; Connolly, M. P. [School of Physics, National University of Ireland Galway, University Road, Galway (Ireland)] [School of Physics, National University of Ireland Galway, University Road, Galway (Ireland); Ciupik, L. [Astronomy Department, Adler Planetarium and Astronomy Museum, Chicago, IL 60605 (United States)] [Astronomy Department, Adler Planetarium and Astronomy Museum, Chicago, IL 60605 (United States); Cui, W.; Feng, Q.; Finley, J. P. [Department of Physics, Purdue University, West Lafayette, IN 47907 (United States)] [Department of Physics, Purdue University, West Lafayette, IN 47907 (United States); Dumm, J.; Fortson, L. [School of Physics and Astronomy, University of Minnesota, Minneapolis, MN 55455 (United States)] [School of Physics and Astronomy, University of Minnesota, Minneapolis, MN 55455 (United States); Errando, M. [Department of Physics and Astronomy, Barnard College, Columbia University, NY 10027 (United States)] [Department of Physics and Astronomy, Barnard College, Columbia University, NY 10027 (United States); Falcone, A. [Department of Astronomy and Astrophysics, 525 Davey Lab, Pennsylvania State University, University Park, PA 16802 (United States)] [Department of Astronomy and Astrophysics, 525 Davey Lab, Pennsylvania State University, University Park, PA 16802 (United States); Federici, S. [DESY, Platanenallee 6, D-15738 Zeuthen (Germany)] [DESY, Platanenallee 6, D-15738 Zeuthen (Germany); Finnegan, G., E-mail: qfeng@purdue.edu, E-mail: cui@purdue.edu [Department of Physics and Astronomy, University of Utah, Salt Lake City, UT 84112 (United States); Collaboration: VERITAS Collaboration; and others

    2013-01-10T23:59:59.000Z

    We report on the detection of a very rapid TeV gamma-ray flare from BL Lacertae on 2011 June 28 with the Very Energetic Radiation Imaging Telescope Array System (VERITAS). The flaring activity was observed during a 34.6 minute exposure, when the integral flux above 200 GeV reached (3.4 {+-} 0.6) Multiplication-Sign 10{sup -6} photons m{sup -2} s{sup -1}, roughly 125% of the Crab Nebula flux measured by VERITAS. The light curve indicates that the observations missed the rising phase of the flare but covered a significant portion of the decaying phase. The exponential decay time was determined to be 13 {+-} 4 minutes, making it one of the most rapid gamma-ray flares seen from a TeV blazar. The gamma-ray spectrum of BL Lacertae during the flare was soft, with a photon index of 3.6 {+-} 0.4, which is in agreement with the measurement made previously by MAGIC in a lower flaring state. Contemporaneous radio observations of the source with the Very Long Baseline Array revealed the emergence of a new, superluminal component from the core around the time of the TeV gamma-ray flare, accompanied by changes in the optical polarization angle. Changes in flux also appear to have occurred at optical, UV, and GeV gamma-ray wavelengths at the time of the flare, although they are difficult to quantify precisely due to sparse coverage. A strong flare was seen at radio wavelengths roughly four months later, which might be related to the gamma-ray flaring activities. We discuss the implications of these multiwavelength results.

  5. G. Ei. Andrews, 'Al simple proof of Jacob'i's triple product ldenilty', Pro,c. Amer. Math{. Soc. 16 (1965), 333-:334.

    E-Print Network [OSTI]

    Garvan, Frank

    1965-01-01T23:59:59.000Z

    tAndl lAndll IA+61 tA+Hl lA+O'Bl TA+SD] tAtkI TC+SI References : G. Ei. Andrews, 'Al simple proof Soc. 18 (2) (1988). I G. Ei. Andrews anfl D. Hickerson, 'Rama,nuJan's 'lost' notebook VII: ther sixth883), 158-170t i [Gor] B. Gordon, 'sorrie identities ln combtnratorial analysis', Quart. J. Math. o

  6. Bl k t T h l F l C l dBlanket Technology, Fuel Cycle and Tritium Self Sufficiency

    E-Print Network [OSTI]

    Abdou, Mohamed

    and TechnologyNuclear Science and Technology (FNST). 4 #12;FNST is the science, engineering, technology and materials Fusion Nuclear Science & Technology (FNST) FNST is the science, engineering, technologyBl k t T h l F l C l dBlanket Technology, Fuel Cycle and Tritium Self Sufficiency M h d Abd

  7. PHYSICAL AND BIOLOGICAL SCIENCES ACADEMIC PERSONNEL/PAYROLL UNIT ASSIGNMENTS

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    of Absence Postdoctoral Scholars Academic Students (GSR's, TA's, CA's, Recruitments, appointments, reviews

  8. KINETIC EVIDENCE FOR THE FORMATION OF DISCRETE 1,4-DEHYDROBENZENE INTERMEDIATES. TRAPPING BY INTER- AND INTRAMOLECULAR HYDROGEN ATOM TRANSFER AND OBSERVATION OF HIGH-TEMPERATURE CIDNP

    E-Print Network [OSTI]

    Lockhart, Thomas P.

    2013-01-01T23:59:59.000Z

    purified by repeated fractional distillation through a glasswas isolated by fractional distillation throug a Ta wire

  9. Mutagenicity of anthraquinone and hydroxylated antrhaquinones in the Ames/Salmonella microsome system

    SciTech Connect (OSTI)

    Liberman, D.F. (Massachusetts Inst. of Tech., Cambridge); Fink, R.C.; Schaefer, F.L.; Mulcahy, R.J.; Stark, A.-A.

    1982-06-01T23:59:59.000Z

    The mutagenicity of anthracene, anthraquinone, and four structurally similar compounds of each was evaluated in the Ames/Salmonella microsome assay.Anthraquinone was shown to be mutagenic for strains TA1537, TA1538, and TA98 in the absence of rat liver homogenate. The four anthraqunione derivatives tested were mutagenic for TA1537 exclusively. None of the anthracenes exhibited mutagenic activity.

  10. Manufacturing and performance of ceramic/metal matrix composite electrical discharge machining electrodes

    E-Print Network [OSTI]

    Kim, Eugene Ty

    1998-01-01T23:59:59.000Z

    The manufacturing and performance of ceramic/metal matrix composite (cermet) electrical discharge machining (EDM) electrodes have been investigated. The processing techniques necessary for creating TiB2/Cu, TaC/Cu, TaC/Cu(s), TaC/CuNi, TaC/Al, Nb...

  11. DIARIO de IBIZAMArTES, 21 DE MAYo DE 201314 AndreuPaloupresidielcomit

    E-Print Network [OSTI]

    Oro, Daniel

    , aque- llos insectos que estén en contac- tocontoxinas.Noobstante,setra- ta de una propuesta interesante

  12. Manufacturing and performance of ceramic/metal matrix composite electrical discharge machining electrodes 

    E-Print Network [OSTI]

    Kim, Eugene Ty

    1998-01-01T23:59:59.000Z

    The manufacturing and performance of ceramic/metal matrix composite (cermet) electrical discharge machining (EDM) electrodes have been investigated. The processing techniques necessary for creating TiB2/Cu, TaC/Cu, TaC/Cu(s), TaC/CuNi, TaC/Al, Nb...

  13. Quaternary records of the dire wolf, Canis dirus, in North and South ROBERT G. DUNDAS

    E-Print Network [OSTI]

    Wang, Zhi "Luke"

    , southward and from three localities in South America (Muaco, Venezuela; Ta- lara, Peru; and Tarija, Bolivia

  14. Searching for a Heavy Higgs boson in a Higgs-portal B-L Model

    E-Print Network [OSTI]

    Banerjee, Shankha; Spannowsky, Michael

    2015-01-01T23:59:59.000Z

    We study the discovery prospects of a heavy neutral scalar arising from a $U(1)_{B-L}$ extension of the Standard Model (SM) during the Large Hadron Collider's high luminosity runs (HL-LHC). This heavy neutral scalar mixes with the SM Higgs boson through a Higgs portal and interacts with the SM particles with an interaction strength proportional to the sine of the mixing angle. The mixing between the two Higgs bosons is constrained by direct and indirect measurements. We choose an experimentally viable mixing angle and explore in detail the $ZZ$ and $WW$ decay modes of the heavy Higgs boson. For the $ZZ$ case, we focus on the cleanest $4\\ell$ and $2\\ell 2j$ final states and find that a heavy Higgs boson of mass smaller than 500 GeV can be discovered at the HL-LHC. For the $WW$ decay mode, we analyze the $\\ell jj \\slashed{E}_T$ signature. We implement novel background reduction techniques in order to tackle the huge background by performing both cut-based and multivariate analyses. However, large backgrounds re...

  15. THE OPTICAL MICROVARIABILITY AND SPECTRAL CHANGES OF THE BL LACERTAE OBJECT S5 0716+714

    SciTech Connect (OSTI)

    Poon, H.; Fu, J. N. [Astronomy Department, Beijing Normal University, Beijing 100875 (China); Fan, J. H. [Center for Astrophysics, Guangzhou University, Guangzhou 510006 (China)], E-mail: china_108@yahoo.com

    2009-12-01T23:59:59.000Z

    We monitored the BL Lac object S5 0716+714 in the optical band during 2008 October and December and 2009 February with a best temporal resolution of about 5 minutes in the BVRI bands. Four fast flares were observed with amplitudes ranging from 0.3 to 0.75 mag. The source remained active during the whole monitoring campaign, showing microvariability in all days except for one. The overall variability amplitudes are {delta}B {approx} 0fm89, {delta}V {approx} 0fm80, {delta}R {approx} 0fm73, and {delta}I{approx} 0fm51. Typical timescales of microvariability range from 2 to 8 hr. The overall V - R color index ranges from 0.37 to 0.59. Strong bluer-when-brighter chromatism was found on internight timescales. However, a different spectral behavior was found on intranight timescales. A possible time lag of {approx}11 minutes between B and I bands was found on one night. The shock-in-jet model and geometric effects can be applied to explain the source's intranight behavior.

  16. Power Spectral Distribution of the BL Lac Object S5 0716+714

    E-Print Network [OSTI]

    Mocanu, G R

    2012-01-01T23:59:59.000Z

    Observational data in the BVRI bands of the variable BL Lacertae Object S5 0716+714 is discussed from the point of view of its Power Spectral Distribution (PSD). A model of the type $P(f) = \\beta f^{-1} [1 + (\\frac{f} {\\delta}) ^{\\alpha -1}]^{-1} + \\gamma $ is fitted to the data for four null hypothesis and the Bayesian $p$ parameter for the fits is calculated. Spectral slopes with values ranging from 1.083 to 2.65 are obtained, with medium values for each band of $\\bar{\\alpha}_B =2.028$, $\\bar{\\alpha}_V = 1.809$, $\\bar{\\alpha}_R = 1.932$ and $\\bar{\\alpha}_I = 1.54$ respectively. These values confirm conclusions of previous studies, namely that the source is turbulent. Two disk models, the standard prescription of the Shakura-Sunyaev disk and magnetized disks exhibiting MagnetoRotational Instability, were discussed. We found that it is unlikely that they explain this set of observational data.

  17. Multiwavelength Intraday Variability of the BL Lac S5 0716+714

    E-Print Network [OSTI]

    Gupta, Alok C; Wiita, P J; Rani, B; Sokolovsky, K V; Mohan, P; Mangalam, A; Marchili, N; Fuhrmann, L; Agudo, I; Bach, U; Bachev, R; Böttcher, M; Gabanyi, K E; Gaur, H; Hawkins, K; Kimeridze, G N; Kurtanidze, O M; Kurtanidze, S O; Lee, C -U; Liu, X; McBreen, B; Nesci, R; Nestoras, G; Nikolashvili, M G; Ohlert, J M; Palma, N; Peneva, S; Pursimo, T; Semkov, E; Strigachev, A; Webb, J R; Wiesemeyer, H; Zensus, J A

    2012-01-01T23:59:59.000Z

    We report results from a 1 week multi-wavelength campaign to monitor the BL Lac object S5 0716+714 (on December 9-16, 2009). In the radio bands the source shows rapid (~ (0.5-1.5) day) intra-day variability with peak amplitudes of up to ~ 10 %. The variability at 2.8 cm leads by about 1 day the variability at 6 cm and 11 cm. This time lag and more rapid variations suggests an intrinsic contribution to the source's intraday variability at 2.8 cm, while at 6 cm and 11 cm interstellar scintillation (ISS) seems to predominate. Large and quasi-sinusoidal variations of ~ 0.8 mag were detected in the V, R and I-bands. The X-ray data (0.2-10 keV) do not reveal significant variability on a 4 day time scale, favoring reprocessed inverse-Compton over synchrotron radiation in this band. The characteristic variability time scales in radio and optical bands are similar. A quasi-periodic variation (QPO) of 0.9 - 1.1 days in the optical data may be present, but if so it is marginal and limited to 2.2 cycles. Cross-correlatio...

  18. Effect of heat treatment on precipitation on V-5Cr-5Ti heat BL63

    SciTech Connect (OSTI)

    Gelles, D.S.; Li, H. [Pacific Northwest National Laboratory, Richland, WA (United States)

    1996-04-01T23:59:59.000Z

    The microstructures of V-5Cr-5Ti heat BL63 are compared following heat treatments at 1125{degrees}C for 1 h and 1125{degrees}C for 1 h followed by 890{degrees}C for 24 h. Following the 890{degrees}C treatment, precipitate density was increased due to the presence of a moderate density of highly elongated particles. Microchemical analysis showed that these particles often contained both Ti and V, some particles showed minor amounts of Si, S, and P, but it was also possible to show that these precipitates were enriched in O rather than C or N. Following the 1125{degrees}C heat treatment, only Si was found as a minor impurity in large particles, but S could be identified at grain boundaries, which were coated with a fine distribution of precipitates. The embrittlement observed is ascribed to a combination of interstitial solid solution hardening and grain boundary embrittlement, with interstitial hardening likely the dominant factor.

  19. Rms-flux relation in the optical fast variability data of BL Lacertae object S5 0716+714

    E-Print Network [OSTI]

    Mocanu, Gabriela Raluca

    2012-01-01T23:59:59.000Z

    The possibility that Bl Lac S5 0716+714 exhibits a linear rms-flux relation in its IntraDay Variability is analyzed. The results may be used as an argument in the existing debate regarding the source of optical IDV in Active Galactic Nuclei. 63 timeseries in different optical bands were used. A linear rms-flux relation at a confidence level higher than 65% was recovered for less than 8% of the cases.

  20. Sterile neutrino dark matter in B-L extension of the standard model and galactic 511 keV line

    SciTech Connect (OSTI)

    Khalil, Shaaban [Centre for Theoretical Physics, The British University in Egypt, El Sherouk City, Postal No. 11837, PO Box 43 (Egypt)] [Centre for Theoretical Physics, The British University in Egypt, El Sherouk City, Postal No. 11837, PO Box 43 (Egypt); Seto, Osamu, E-mail: skhalil@bue.edu.eg, E-mail: seto@physics.umn.edu [Instituto de Fisica Teorica UAM/CSIC, Universidad Autonoma de Madrid, Cantoblanco, Madrid 28049 (Spain)] [Instituto de Fisica Teorica UAM/CSIC, Universidad Autonoma de Madrid, Cantoblanco, Madrid 28049 (Spain)

    2008-10-15T23:59:59.000Z

    Sterile right-handed neutrinos can be naturally embedded in a low scale gauged U(1){sub B-L} extension of the standard model. We show that, within a low reheating scenario, such a neutrino is an interesting dark matter candidate. We emphasize that if the neutrino mass is of the order of MeV, then it accounts for the measured dark matter relic density and also accommodates the observed flux of 511 keV photons from the galactic bulge.

  1. T H E U N I V E R SIT Y O F M I C HI G A N M AT T H A EI B O TA NI C A L G A RD E N S

    E-Print Network [OSTI]

    Shyy, Wei

    ecological practices wherever possible. Look to MBGNA to be a leader is showing ways in which these concepts to the increased light and improved environment in the tropical house by bursting into its most glorious bloom ever

  2. Towards a Secure and Efficient System for End-to-End Provenance Appears in the Proceedings of the Second USENIX Workshop on Theory and Practice of Provenance (TaPP 2010)

    E-Print Network [OSTI]

    Zadok, Erez

    of sensor data as it is recorded and aggre- gated in cyber-physical systems such as the smart-grid and SCADA

  3. Towards a Secure and Efficient System for EndtoEnd Provenance Appears in the Proceedings of the Second USENIX Workshop on Theory and Practice of Provenance (TaPP 2010)

    E-Print Network [OSTI]

    Zadok, Erez

    of sensor data as it is recorded and aggre­ gated in cyber­physical systems such as the smart­grid and SCADA

  4. Study of optical properties of asymmetric bipolar pulse DC magnetron sputtered Ta{sub 2}O{sub 5} thin film as a function of oxygen content in deposition ambient

    SciTech Connect (OSTI)

    Haque, S. Maidul, E-mail: skmaidulhaque@gmail.com; Shinde, D. D., E-mail: skmaidulhaque@gmail.com; Misal, J. S., E-mail: skmaidulhaque@gmail.com [Photonics and Nano-technology Section, Atomic and Molecular Physics Division, BARC, Visakhapatnam-530012 (India); Bhattacharyya, D.; Sahoo, N. K. [Atomic and Molecular Physics Division, Bhabha Atomic Research Centre, Mumbai - 400085 (India)

    2014-04-24T23:59:59.000Z

    Tantalum penta-oxide thin films have been deposited by reactive sputtering technique using asymmetric bipolar pulsed DC source at various oxygen percentage viz. 0 to 50 %. The optical properties of the films have been studied by spectroscopic ellipsometry measurements. It has been observed that compact films with low void fraction, high refractive index and band gap can be obtained by the above technique with oxygen percentage in the range of 30–40%. The films deposited with zero or very low oxygen content have high deposition rate and yield metal rich films with large voids, defects, low band gap and high refractive index. Similarly films deposited with >40% oxygen content again contain voids and defects due to the presence of large amount of gas molecules in the sputtering ambient.

  5. Sri M., Huld T.A., Dunlop E.D., Albuisson M., Wald L, 2006. Online data and tools for estimation of solar electricity in Africa: the PVGIS approach. Proceedings from 21st

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Basin, Africa and South-West Asia. Daily global irradiation was primarily computed from Meteosat of solar electricity in Africa: the PVGIS approach. Proceedings from 21st European Photovoltaic Solar Energy Conference and Exhibition, 4-8 October 2006, Dresden, Germany (preprint) 1 ONLINE DATA AND TOOLS

  6. WEED CONTROL AND PEANUT RESPONSE TO DICLOSULAM. J.R. Karnei, P.A. Dotray, J.W. Keeling, and T.A. Baughman. Texas Tech University and Texas Agricultural Experiment Station, Lubbock, and Texas

    E-Print Network [OSTI]

    Mukhtar, Saqib

    Extension Service, Vernon. ABSTRACT Field studies were conducted in West Texas at six locations in 2000.A. Baughman. Texas Tech University and Texas Agricultural Experiment Station, Lubbock, and Texas Cooperative

  7. Effect of excess Bi2O3 on the ferroelectric properties of SrBi2Ta2O9 Jung-Kun Lee, Byungwoo Park, Kug-Sun Honga)

    E-Print Network [OSTI]

    Park, Byungwoo

    , Byungwoo Park, Kug-Sun Honga) School of Materials Science and Engineering, Seoul National University, Seoul such as spontaneous polarization (Ps) showed a dependence on Bi content. The ferroelectric Curie temperature Tc In addition, comprehensive structural studies of layered compounds have shown disorder in the distribution

  8. MOCHA: Modularity in Model Checking ??? R. Alur 1 , T.A. Henzinger 2 , F.Y.C. Mang 2 , S. Qadeer 2 , S.K. Rajamani 2 , and S. Tasiran 2

    E-Print Network [OSTI]

    Henzinger, Thomas A.

    of Pennsylvania, and Computing Science Research Center, Bell Laboratories alur@cis.upenn.edu 2 Electrical framework of reactive modules [AH96]. The definition of reactive modules is inspired by formalisms components within a single transition. Reactive modules provide a semantic glue that allows the formal embed

  9. PRECISION MEASUREMENT OF SINGLET CAPTURE IN HYDROGEN V.A. Andreev , T. Banks , L. Bonnet , R.M. Carey , T.A. Case , D. Chitwood , S.M. Clayton , K.M. Crowe , P.T. Debevec ,

    E-Print Network [OSTI]

    Kammel, Peter

    magnet which is a specially designed coil wound closely around the Alu vessel containing the TPC well-known of the nucleon charged current form factors, the induced pseudo- scalar "$# , to 7%. Mu detector (Aluminium pressure vessel housing the TPC) with magnetic field coil is retracted for preparing

  10. Koehl, M .A. R., P.A. Jumars and L . Karp-Boss. 2003 . Algal biophysics . pp. 115-130 in TA. Norton, Ed. Out of the Past. British Phycological Association, Belfast .

    E-Print Network [OSTI]

    Jumars, Pete

    currents and waves, yet they also depend on moving water for transport (reviewed in Norton et at 1981 is highlighting the importance of unsteady water motion from turbulence and waves to these various flow rophytes attached to the substratum than for microalgae carried in the water), and V is the kinematic

  11. Proceedings of the International Conference on Lasers `95, eds. V.J. Corcoran and T.A. Goldman, STS Press, McLean VA, 1996, pp. 225-231. OPTIMIZING HIGH PRESSURE CHEMICAL OXYGEN-IODINE LASERS

    E-Print Network [OSTI]

    Carroll, David L.

    Press, McLean VA, 1996, pp. 225-231. OPTIMIZING HIGH PRESSURE CHEMICAL OXYGEN-IODINE LASERS David L laser model was baselined to existing oxygen-iodine research assessment and device improvement chemical(1) generator. It may be possible to improve high pressure RADICL performance by increasing the number of large

  12. Proceedings of the International Conference on Lasers 2000, eds. V.J. Corcoran and T.A. Corcoran, STS Press, McLean VA, 2001, pp. 265-272.

    E-Print Network [OSTI]

    Carroll, David L.

    oxygen-iodine laser (COIL) singlet oxygen generator (SOG) based on discharge excitation of molecular/2). Historically, this pumping reaction has been fed by a liquid chemistry singlet oxygen generator (SOG, STS Press, McLean VA, 2001, pp. 265-272. 265 ElectriCOIL: Preliminary Experiments of Excited Oxygen

  13. Building America Case Study: Ground Source Heat Pump Research, TaC Studios Residence, Atlanta, Georigia (Fact Sheet), Technology Solutions for New and Existing Homes, Energy Efficiency & Renewable Energy (EERE)

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny: Theof Energy Future of CSP:Brookhaven TeachingCommunity-ScaleTotalGround

  14. C I V I L & E N V I R O N M E N TA L E N G I N E E R I N G Wanted: creative,

    E-Print Network [OSTI]

    construction materi- als, such as concrete, consume vast quantities of energy to pro- duce. Every year, almost, water, shelter, sanitation, waste disposal, energy, income, and education. D80 is a collaboration Australia, Bolivia, Finland, Germany, Ghana, Panama, and other locations around the world. Excellent

  15. C I V I L & E N V I R O N M E N TA L E N G I N E E R I N G anted: creative,

    E-Print Network [OSTI]

    Honrath, Richard E.

    Australia, Bolivia,places like Australia, Bolivia, Finland, Germany, Ghana, Panama,Finland, Germany, Ghana of deteriorating infrastructure, traffic congestion, energy needs, floods, earthquakes, urban redevelopment

  16. Biface reduction and blade manufacture at the Gault site (41bl323): a Clovis occupation in Bell County, Texas

    E-Print Network [OSTI]

    Dickens, William A.

    2007-04-25T23:59:59.000Z

    COUNTY, TEXAS A Dissertation by WILLIAM A. DICKENS Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY Approved by: Co-Chairs of Committee... at the Gault Site (41BL323): A Clovis Occupation in Bell County, Texas. (December 2005) William A. Dickens, B.S., Stephen F. Austin State University; M.A., Texas A&M University Co-Chairs of Advisory Committee: Dr Harry J. Shafer Dr. Michael R. Waters...

  17. SEVEN-YEAR MULTI-COLOR OPTICAL MONITORING OF BL LACERTAE OBJECT S5 0716+714

    SciTech Connect (OSTI)

    Dai Yan; Wu Jianghua; Zhu Zonghong; Wang Lingzhi [Department of Astronomy, Beijing Normal University, Beijing 100875 (China); Zhou Xu; Ma Jun [Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Beijing 100012 (China); Yuan Qirong, E-mail: zhuzh@bnu.edu.cn [Department of Physics and Institute of Theoretical Physics, Nanjing Normal University, Nanjing 210046 (China)

    2013-02-15T23:59:59.000Z

    We have monitored the BL Lacertae object S5 0716+714 in five intermediate optical wavebands from 2004 September to 2011 April. Here, we present data that include 8661 measurements representing one of the largest databases obtained for an object in the optical domain. A simple analysis of the data indicates that the object was active most of the time, and intraday variability was frequently observed. In total, the object varied by 2.614 mag in the i band. Strong bluer-when-brighter chromatism was observed on long, intermediate, and short timescales.

  18. Seven-Year Multi-Color Optical Monitoring of BL Lacertae Object S5 0716+714

    E-Print Network [OSTI]

    Dai, Yan; Zhu, Zong-Hong; Zhou, Xu; Ma, Jun; Yuan, Qirong; Wang, Lingzhi

    2012-01-01T23:59:59.000Z

    We have monitored the BL Lac object S5 0716+714 in five intermediate optical wavebands from 2004 September to 2011 April. Here we present the data that include 8661 measurements which represents one of the largest databases obtained for an object at optical domain. A simple analysis of the data indicates that the object was active in most time, and intraday variability was frequently observed. In total, the object varied by 2.614 magnitudes in the $i$ band. Strong bluer-when-brighter chromatism was observed on long, intermediate, and short timescales.

  19. Sterile neutrino dark matter with gauged U(1){sub B-L} and a low reheating temperature

    SciTech Connect (OSTI)

    Khalil, Shaaban [Centre for Theoretical Physics, The British University in Egypt, El Sherouk City, 11837, P.O. Box 43 (Egypt); Department of Mathematics, Ain Shams University, Faculty of Science, Cairo, 11566 (Egypt); Seto, Osamu [William I. Fine Theoretical Physics Institute, University of Minnesota, Minneapolis, MN 55455 (United States)

    2009-04-17T23:59:59.000Z

    Sterile right-handed neutrinos can be naturally embedded in a low scale gauged U(1){sub B-L} extension of the standard model. We show that, within a low reheating scenario, such a neutrino can be produced via a novel manner, namely scattering through Z' gauge boson, and becomes an interesting dark matter candidate. In addition, we show that if the neutrino mass is of the order of MeV, then it accounts for the measured dark matter relic density and also accommodates the observed flux of 511 keV photons from the galactic bulge.

  20. Search for New Heavy Higgs Boson in B-L model at the LHC using Monte Carlo Simulation

    E-Print Network [OSTI]

    Hesham Mansour; Nady Bakhet

    2013-04-24T23:59:59.000Z

    The aim of this work is to search for a new heavy Higgs boson in the B-L extension of the Standard Model at LHC using the data produced from simulated collisions between two protons at different center of mass energies by Monte Carlo event generator programs to find new Higgs boson signatures at the LHC. Also we study the production and decay channels for Higgs boson in this model and its interactions with the other new particles of this model namely the new neutral gauge massive boson and the new fermionic right-handed heavy neutrinos .

  1. Connection between inner jet kinematics and broadband flux variability in the BL Lac object S5 0716+714

    E-Print Network [OSTI]

    Rani, B; Marscher, A P; Hodgson, J A; Fuhrmann, L; Angelakis, E; Britzen, S; Zensus, J A

    2015-01-01T23:59:59.000Z

    We present a high-frequency very long baseline interferometry (VLBI) kinematical study of the BL Lac object S5 0716+714 over the time period of September 2008 to October 2010. The aim of the study is to investigate the relation of the jet kinematics to the observed broadband flux variability. We find significant non-radial motions in the jet outflow of the source. In the radial direction, the highest measured apparent speed is \\sim37 c, which is exceptionally high, especially for a BL Lac object. Patterns in the jet flow reveal a roughly stationary feature \\sim0.15 mas downstream of the core. The long-term fits to the component trajectories reveal acceleration in the sub-mas region of the jet. The measured brightness temperature, T_{B}, follows a continuous trend of decline with distance, T_B \\propto r_{jet}^{-(2.36\\pm0.41)}, which suggests a gradient in Doppler factor along the jet axis. Our analysis suggest that a moving disturbance (or a shock wave) from the base of the jet produces the high-energy (optica...

  2. Age at menarche and risks of all-cause and cardiovascular mortality: a systematic review and meta-analysis

    E-Print Network [OSTI]

    Charalampopoulos, Dimitrios; McLoughlin, Andrew; Elks, Cathy E.; Ong, Ken K.

    2014-06-11T23:59:59.000Z

    a study period of 50 years (1959–2009). Ta bl e 1. C ha ra ct er is tic s of S tu di es In cl ud ed in th e R ev ie w fo rt he A ss oc ia tio n B et w ee n M en ar ch ea lA ge an d D ea th Fr om A ll C au se s Fi rs tA ut ho r, Ye ar (R ef er en ce N... for studies also controlling for at least 1 indicator of socioeconomic status, for example, education, income, and at least 1 of the following lifestyle factors: physical activity, alcohol, or diet). Stars are awarded on the basis of answers provided for each...

  3. X-Ray Luminosity and Spectral Variability in the TEV BL Lac 1ES2344+514

    E-Print Network [OSTI]

    P. Giommi; P. Padovani; E. Perlman

    1998-02-02T23:59:59.000Z

    The results of a series of five \\sax observations of the TeV BL Lac object 1ES2344+514 are briefly presented. Large amplitude luminosity variability, associated to impressive spectral changes in the hard X-rays, have been found. The shape of the lightcurve depends on energy, with the flare starting and ending in the hard band, but with maximum intensity possibly reached earlier in the soft X-rays. The luminosity and spectral changes may be due to a shift of the peak of the synchrotron emission from the soft X-rays to the hard X-ray band similar to that detected during \\sax observations of MKN 501.

  4. Optical and radio variability of the BL Lac object AO 0235+16: a possible 5-6 year periodicity

    E-Print Network [OSTI]

    C. M. Raiteri; M. Villata; H. D. Aller; M. F. Aller; J. Heidt; O. M. Kurtanidze; L. Lanteri; M. Maesano; E. Massaro; F. Montagni; R. Nesci; K. Nilsson; M. G. Nikolashvili; P. Nurmi; L. Ostorero; T. Pursimo; R. Rekola; A. Sillanpaa; L. O. Takalo; H. Terasranta; G. Tosti; T. J. Balonek; M. Feldt; E. J. McGrath; A. Heines; C. Heisler; J. Hu; M. Kidger; J. R. Mattox; A. Pati; R. Robb; A. C. Sadun; P. Shastri; S. J. Wagner; J. Wei; X. Wu

    2001-08-09T23:59:59.000Z

    New optical and radio data on the BL Lacertae object AO 0235+16 have been collected in the last four years by a wide international collaboration, which confirm the intense activity of this source. The optical data also include the results of the Whole Earth Blazar Telescope (WEBT) first-light campaign organized in November 1997. The optical spectrum is observed to basically steepen when the source gets fainter. We have investigated the existence of typical variability time scales and of possible correlations between the optical and radio emissions by means of visual inspection, Discrete Correlation Function analysis, and Discrete Fourier Transform technique. The major radio outbursts are found to repeat quasi-regularly with a periodicity of about 5.7 years; this period is also in agreement with the occurrence of some of the major optical outbursts, but not all of them.

  5. Phenomenology of the minimal B-L extension of the standard model: Z{sup '} and neutrinos

    SciTech Connect (OSTI)

    Basso, Lorenzo; Belyaev, Alexander; Moretti, Stefano [School of Physics and Astronomy, University of Southampton, Highfield, Southampton SO17 1BJ (United Kingdom); Particle Physics Department, Rutherford Appleton Laboratory, Chilton Didcot, Oxon OX11 0QX (United Kingdom); Shepherd-Themistocleous, Claire H. [Particle Physics Department, Rutherford Appleton Laboratory, Chilton Didcot, Oxon OX11 0QX (United Kingdom)

    2009-09-01T23:59:59.000Z

    We present the Large Hadron Collider (LHC) discovery potential in the Z{sup '} and heavy neutrino sectors of a U(1){sub B-L} enlarged standard model also encompassing 3 heavy Majorana neutrinos. This model exhibits novel signatures at the LHC, the most interesting arising from a Z{sup '} decay chain involving heavy neutrinos, eventually decaying into leptons and jets. In particular, this signature allows one to measure the Z{sup '} and heavy neutrino masses involved. In addition, over a large region of the parameter space, the heavy neutrinos are rather long-lived particles producing distinctive displaced vertices that can be seen in the detectors. Lastly, the simultaneous measurement of both the heavy neutrino mass and decay length enables an estimate of the absolute mass of the parent light neutrino.

  6. A kpc-scale X-ray jet in the BL Lac source S5 2007+777

    E-Print Network [OSTI]

    Rita M. Sambruna; Davide Donato; C. C. Cheung; F. Tavecchio; L. Maraschi

    2008-05-07T23:59:59.000Z

    X-ray jets in AGN are commonly observed in FRII and FRI radio-galaxies, but rarely in BL Lacs, most probably due to their orientation close to the line of sight and the ensuing foreshortening effects. Only three BL Lacs are known so far to contain a kpc-scale X-ray jet. In this paper, we present the evidence for the existence of a fourth extended X-ray jet in the classical radio-selected source S5 2007+777, which for its hybrid FRI/II radio morphology has been classified as a HYMOR (HYbrid MOrphology Radio source). Our Chandra ACIS-S observations of this source revealed an X-ray counterpart to the 19"-long radio jet. Interestingly, the X-ray properties of the kpc-scale jet in S5 2007+777 are very similar to those observed in FRII jets. First, the X-ray morphology closely mirrors the radio one, with the X-rays being concentrated in the discrete radio knots. Second, the X-ray continuum of the jet/brightest knot is described by a very hard power law, with photon index Gamma_x~1, although the uncertainties are large. Third, the optical upper limit from archival HST data implies a concave radio-to-X-ray SED. If the X-ray emission is attributed to IC/CMB with equipartition, strong beaming (delta=13) is required, implying a very large scale (Mpc) jet. The beaming requirement can be somewhat relaxed assuming a magnetic field lower than equipartition. Alternatively, synchrotron emission from a second population of very high-energy electrons is viable. Comparison to other HYMOR jets detected with Chandra is discussed, as well as general implications for the origin of the FRI/II division.

  7. ROSAT/ASCA Observations of a Serendipitous BL Lac Object PKS 2316-423: The Variable High-Energy Tail of Synchrotron Radiation

    E-Print Network [OSTI]

    Sui-Jian Xue; You-Hong Zhang; Jian-Sheng Chen

    2000-05-22T23:59:59.000Z

    We present the analysis of archival data from ROSAT and ASCA of a serendipitous BL Lac object PKS 2316-423. Because of its featureless non-thermal radio/optical continuum, PKS 2316-423 has been called as a BL Lac candidate in the literature. PKS 2316-423 was evidently variable over the multiple X-ray observations, in particular, a variable high-energy tail of the synchrotron radiation is revealed. The X-ray spectral analysis provides further evidence of the synchrotron nature of its broad-band spectrum: a steep and downward curving spectrum between 0.1--10 keV, typical of high-energy peaked BL Lacs (HBL). The spectral energy distribution (SED) through radio-to-X-ray yields the synchrotron radiation peak at frequency Vp=7.3 10^{15} Hz, with integrated luminosity of Lsyn=2.1 10^{44} ergs s^{-1}. The averaged SED properties of PKS 2316-423 are very similar to those ``intermediate'' BL Lac objects (IBL) found recently in several deep surveys, such as Deep X-ray Radio Blazar, Radio-Emitting X-ray, and ROSAT-Green Bank surveys. We suggest that PKS 2316-423 is an IBL though it also shows some general features of a HBL. Actually, this double attribute of PKS 2316-423 provides a good test of the prediction that an IBL object can show either synchrotron or inverse-Compton characteristics in different variability states.

  8. Closure Plan for Corrective Action Unit 110: Area 3 RWMS U-3ax/bl Disposal Unit, Nevada Test Site, Nevada

    SciTech Connect (OSTI)

    T. M. Fitzmaurice

    2000-08-01T23:59:59.000Z

    This Closure Plan has been prepared for the Area 3 RWMS U-3ax/bl Disposal Unit Corrective Action Unit 110 in accordance with the Federal Facility and Consent Order (Nevada Division of Environmental Protection [NDEP] et al., 1996). The U-3ax/bl is a historic disposal unit within the Area 3 Radioactive Waste Management Site located on the Nevada Test Site (NTS). The unit, which was formed by excavating the area between two subsidence craters (U-3ax and U-3bl), was operationally closed in 1987. The U-3ax/bl disposal unit is scheduled for permanent closure under the Resource Conservation and Recovery Act as a hazardous waste landfill. Existing records indicate that, from July 1968 to December 1987, U-3ax/bl received 2.3 x 10{sup 5} cubic meters (8.12 x 10{sup 6} cubic feet) of waste. NTS nuclear device testing generated approximately 95 percent of the total volume disposed of in U-3ax/bl, the majority of which came from the Waste Consolidation Project (80 percent of the total volume) (Elletson and Johnejack, 1995). Area 3 is located in Yucca Flat, within the northeast quadrant of the NTS. The Yucca Flat watershed is a structurally closed basin encompassing an area of approximately 780 square kilometers (300 square miles). The structural geomorphology of Yucca Flat is typical of the Basin and Range Physiographic Province. Yucca Flat lies in one of the most arid regions of the country. Water balance calculations for Area 3 indicate that it is continuously in a state of moisture deficit. The U-3ax/bl Disposal Unit will be closed in place by installing a Resource Conservation and Recovery Act equivalent cover. Following cover construction a fence will be installed around the cover to prevent accidental damage to the cover. Post-closure monitoring will consist of site inspections to determine the condition of the engineered cover and cover performance monitoring using Time-Domain Reflectometry arrays to monitor moisture migration in the cover. Any identified maintenance and repair requirements will be remedied within 60 working days of discovery and documented in writing at the time of repair. Results of all inspections/repairs for a given year will be addressed in a single report submitted annually to the NDEP. Soil moisture will be monitored within the cover for a period of at least two years prior to establishing performance criteria for NDEP regulatory purposes.

  9. NUMERICAL LINEAR ALGEBRA WITH APPLICATIONS Numer. Linear Algebra Appl., 6, 235--253 (1999)

    E-Print Network [OSTI]

    Sleijpen, Gerard

    . Sleijpen 1 1 Mathematical Institute, Utrecht University, P.O. Box 80.010, NL­3508 TA Utrecht to M. Genseberger, Mathematical Institute, Utrecht University, P.O. Box 80.010, NL­3508 TA Utrecht

  10. Elastic-plastic analysis of the transition divertor joint for high performance divertor target plate

    E-Print Network [OSTI]

    Navaei, Dara

    2011-01-01T23:59:59.000Z

    status of EUROFER and ODS-EUROFER for application in blanketDispersion Strengthened (ODS) 3. Tantalum (Ta) 4. Tungsten (to Tantalum (Ta) and ODS from the left side. Figure 5

  11. Multiple Syntrophic Interactions in a Terephthalate-Degrading Methanogenic Consortium

    E-Print Network [OSTI]

    Lykidis, Athanasios

    2012-01-01T23:59:59.000Z

    of the TA-degrading bioreactor as revealed by 16S rRNA clonethermophilic), TA-degrading bioreactor. We identified geneslaboratory-scale hybrid bioreactor (Fig. 1a) as described

  12. The mucosal/epithelial barrier disruption and transport of pancreatic digestive enzymes in early stages of intestinal ischemia

    E-Print Network [OSTI]

    Chang, Marisol

    2012-01-01T23:59:59.000Z

    calculated after non-linear regression (B). B Figure 4.2of TA calculated after non-linear regression. A B Figure 2.5of TA calculated after non-linear regression. A B Figure 2.6

  13. Historic Properties

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

    Magazine TA-16-0516 V-Site Assembly Building TA-16-0517 V-Site Building Development and testing of the first "Fat Man" bomb and related implosion and criticality research...

  14. Sorghum Diseases.

    E-Print Network [OSTI]

    Amador, Jose; Berry, Robert W.; Frederiksen, Richard A.; Horne, C. Wendell; Thames, Walter H.; Toler, Robert W.

    1969-01-01T23:59:59.000Z

    , Spartina p ec tina ta A dropseed, Sporobolus asper St. Augustine grass, Steno taphrum secundatum GRASSES REPORTED SUSCEPTIBLE IN OTHER STATES Meadow brome, Bromus erectus Hackgrass, Miscan thus sacchariflorus Plains muhly, Muhlenbergia cuspida ta...

  15. Multibunch Instability Investigations for a Tau-Charm Factory

    E-Print Network [OSTI]

    Zisman, Michael S.

    2011-01-01T23:59:59.000Z

    t y = 22 ms ) Longitudinal CEBAF. Superconducting 't a =! (ms) 'ta=2 (ms) Transverse CEBAF. Superconducting 'ta=O (MHz design), and for the CEBAF 1500-MHz superconducting RF

  16. Office of Admissions in conjunction with Committee on Educational Policy and academic departments (5/2012) Page 1 2012-2013 Advanced Placement Exams (AP) and International Baccalaureate Higher Level Exams (IBH)

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    UCSC Course Equivalency Notes: AP Language French _____________ German _____________ Spanish 3 _____________ Spanish 3,4,5 _____ 3,4,5 8 _____ 8 TA ______ TA Each Literature exam may be taken for credit. AP French

  17. Large-area fabrication of high aspect ratio tantalum photonic crystals for high-temperature selective emitters

    E-Print Network [OSTI]

    Rinnerbauer, Veronika

    The authors present highly selective emitters based on two-dimensional tantalum (Ta) photonic crystals, fabricated on 2 in. polycrystalline Ta substrates, for high-temperature applications, e.g., thermophotovoltaic energy ...

  18. CX-002690: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Pajarito Road Right-Of-Way Shift at TA-50 and TA-55CX(s) Applied: B1.13Date: 04/21/2010Location(s): New MexicoOffice(s): Los Alamos Site Office

  19. Le Lait (1984), 64, 143-162 Aspect nergtique du relvement par osmose

    E-Print Network [OSTI]

    Boyer, Edmond

    of these alcoholic solutions issued from wine production. Some membranes are available. However, it is necessary ta compare the energy consum.ption of this preconcentration step, ta the energy necessary used

  20. Delta Subsidence Reversal, Levee Failure, and Aquatic Habitat—A Cautionary Tale

    E-Print Network [OSTI]

    Bates, Matthew E.; Lund, Jay R.

    2013-01-01T23:59:59.000Z

    CS, Brown TA. 2009a. Peat accretion histories during thedrainage on the remaining peat in the Sacramento–San JoaquinCS, Brown TA. 2009a. Peat accretion histories during the

  1. Fact Sheet LANS PNOV

    Energy Savers [EERE]

    safety significance. Personnel at TA-48 and TA-53 did not recognize the extremely high beta radiation dose rate associated with the arsenic-74 (As-74) source during their review...

  2. Type B Accident Investigation of the Acid Vapor Inhalation on...

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

    2005, in TA-48, Building RC-1 Room 402 at the Los Alamos National Laboratory Type B Accident Investigation of the Acid Vapor Inhalation on June 7, 2005, in TA-48, Building RC-1...

  3. (Received 28 February 1999; Revised 15 April 1999) * Department for Foundations and History of the Natural Sciences and Mathematics, Utrecht

    E-Print Network [OSTI]

    Seevinck, Michiel

    of the Natural Sciences and Mathematics, Utrecht University, PO Box 80.000, 3508 TA Utrecht, The Netherlands (e

  4. Bestllning kopia av allmn handling Licentiat/Doktorsexamen Order of a public document Degree of Licentiate/Doctor

    E-Print Network [OSTI]

    of Licentiate/Doctor Rätten för en myndighet att ta ut avgifter för kopior, bevis, registerutdrag m.m. regleras

  5. Actes du colloque AcquisiLyon 09, Lyon, 3 et 4 dcembre 2009. 1 Acquisition des constructions causatives en bulgare et en franais: production,

    E-Print Network [OSTI]

    Boyer, Edmond

    ". (2) Vojnici-te vzrivjavat bomba-ta. Soldats les exploser: bombe la CAUS-3PL, PRES "Les soldats font

  6. Anthropogenic Influence on Recent Bathymetric Change in West-Central San Francisco Bay

    E-Print Network [OSTI]

    Barnard, Patrick; Kvitek, Rikk

    2010-01-01T23:59:59.000Z

    Bay coastal system. Sedimentology, In: Li M, Sherwood C,Publication Book on Shelf Sedimentology. 33 p. Fregoso TA,

  7. Are both BL Lacs and pulsar wind nebulae the astrophysical counterparts of IceCube neutrino events?

    E-Print Network [OSTI]

    P. Padovani; E. Resconi

    2014-06-10T23:59:59.000Z

    IceCube has recently reported the discovery of high-energy neutrinos of astrophysical origin, opening up the PeV (10^15 eV) sky. Because of their large positional uncertainties, these events have not yet been associated to any astrophysical source. We have found plausible astronomical counterparts in the GeV -- TeV bands by looking for sources in the available large area high-energy gamma-ray catalogues within the error circles of the IceCube events. We then built the spectral energy distribution of these sources and compared it with the energy and flux of the corresponding neutrino. Likely counterparts include mostly BL Lacs and two Galactic pulsar wind nebulae. On the one hand many objects, including the starburst galaxy NGC 253 and Centaurus A, despite being spatially coincident with neutrino events, are too weak to be reconciled with the neutrino flux. On the other hand, various GeV powerful objects cannot be assessed as possible counterparts due to their lack of TeV data. The definitive association between high-energy astrophysical neutrinos and our candidates will be significantly helped by new TeV observations but will be confirmed or disproved only by further IceCube data. Either way, this will have momentous implications for blazar jets, high-energy astrophysics, and cosmic-ray and neutrino astronomy.

  8. Metastatic Melanoma Induced Metabolic Changes in C57BL/6J Mouse Stomach Measured by 1H NMR Spectroscopy

    SciTech Connect (OSTI)

    Wang, Xuan; Hu, Mary Y.; Liu, Maili; Hu, Jian Z.

    2014-12-05T23:59:59.000Z

    Melanoma is a malignant tumor of melanocytes with high capability of invasion and rapid metastasis to other organs. Malignant melanoma is the most common metastatic malignancy found in gastrointestinal tract (GI). To the best of our knowledge, previous studies of melanoma in gastrointestinal tract are all clinical case reports. In this work, 1H NMR-based metabolomics approach is used to investigate the metabolite profiles differences of stomach tissue extracts of metastatic B16-F10 melanoma in C57BL/6J mouse and search for specific metabolite biomarker candidates. Principal Component Analysis (PCA), an unsupervised multivariate data analysis method, is used to detect possible outliers, while Orthogonal Projection to Latent Structure (OPLS), a supervised multivariate data analysis method, is employed to evaluate important metabolites responsible for discriminating the control and the melanoma groups. Both PCA and OPLS results reveal that the melanoma group can be well separated from its control group. Among the 50 identified metabolites, it is found that the concentrations of 19 metabolites are statistically and significantly changed with the levels of O-phosphocholine and hypoxanthine down-regulated while the levels of isoleucine, leucine, valine, isobutyrate, threonine, cadaverine, alanine, glutamate, glutamine, methionine, citrate, asparagine, tryptophan, glycine, serine, uracil, and formate up-regulated in the melanoma group. These significantly changed metabolites are associated with multiple biological pathways and may be potential biomarkers for metastatic melanoma in stomach.

  9. Detection of Exceptional X-Ray Spectral Variability in the TeV BL Lac 1ES 2344+514

    E-Print Network [OSTI]

    P. Giommi; P. Padovani; E. Perlman

    1999-07-27T23:59:59.000Z

    We present the results of six BeppoSAX observations of 1ES 2344+514, five of which were taken within a week. 1ES 2344+514, one of the few known TeV BL Lac objects, was detected by the BeppoSAX Narrow Field Instruments between 0.1 to \\~50 keV. During the first five closely spaced observations 1ES 2344+514 showed large amplitude luminosity variability, associated with spectacular spectral changes, particularly when compared to the last observation when the source was found to be several times fainter, with a much steeper X-ray spectrum. The energy dependent shape of the lightcurve and the spectral changes imply a large shift (factor of 30 or more in frequency) of the peak of the synchrotron emission. At maximum flux the peak was located at or above 10 keV, making 1ES 2344+514 the second blazar (after MKN501) with the synchrotron peak in the hard X-ray band. The shift, and the corresponding increase in luminosity, might be due to the onset of a second synchrotron component extending from the soft to the hard X-ray band where most of the power is emitted. Rapid variability on a timescale of approximately 5000 seconds has also been detected when the source was brightest.

  10. Optical Monitoring of BL Lacertae Object S5 0716+714 with a Novel Multi-Peak Interference Filter

    E-Print Network [OSTI]

    Jianghua Wu; Xu Zhou; Jun Ma; Zhenyu Wu; Zhaoji Jiang; Jiansheng Chen

    2006-12-06T23:59:59.000Z

    We at first introduce a novel photometric system, which consists of a Schmidt telescope, an objective prism, a CCD camera, and, especially, a multi-peak interference filter. The multi-peak interference filter enables light in multi passbands to pass through it simultaneously. The light in different passbands is differentially refracted by the objective prism and is focused on the CCD separately, so we have multi "images" for each object on the CCD frames. This system enables us to monitor blazars exactly simultaneously in multi wavebands on a single telescope, and to accurately trace the color change during the variation. We used this novel system to monitor the BL Lacertae object S5 0716+714 during 2006 January and February and achieved a very high temporal resolution. The object was very bright and very active during this period. Two strong flares were observed, with variation amplitudes of about 0.8 and 0.6 mags in the $V'$ band, respectively. Strong bluer-when-brighter correlations were found for both internight and intranight variations. No apparent time lag was observed between the $V'$- and $R'$-band variations, and the observed bluer-when-brighter chromatism may be mainly attributed to the larger variation amplitude at shorter wavelength. In addition to the bluer-when-brighter trend, the object also showed a bluer color when it was more active. The observed variability and its color behaviors are consistent with the shock-in-jet model.

  11. The Long Term Optical Variability of the BL Lac object S5 0716+714: Evidence for a Precessing Jet

    E-Print Network [OSTI]

    R. Nesci; E. Massaro; C. Rossi; S. Sclavi; M. Maesano; F. Montagni

    2005-06-08T23:59:59.000Z

    We present the historic light curve of the BL Lac object S5 0716+714, spanning the time interval from 1953 to 2003, built using Asiago archive plates and our recent CCD observations, together with literature data. The source shows an evident long term variability, over which well known short term variations are superposed. In particular, in the period from 1961 to 1983 the mean brightness of S5 0716+714 remained significantly fainter than that observed after 1994. Assuming a constant variation rate of the mean magnitude we can estimate a value of about 0.11 magnitude/year. The simultaneous occurrence of decreasing ejection velocities of superluminal moving components in the jet reported by Bach et al. (2005) suggests that both phenomena are related to the change of the direction of the jet to the line of sight from about 5 to 0.7 degrees for an approximately constant bulk Lorentz factor of about 12. A simple explanation is that of a precessing relativistic jet, which should presently be close to the smallest orientation angle. One can therefore expect in the next ten years a decrease of the mean brightness of about 1 magnitude.

  12. Nonzero {theta}{sub 13} for neutrino mixing in a supersymmetric B-L gauge model with T{sub 7} lepton flavor symmetry

    SciTech Connect (OSTI)

    Cao Qinghong [Department of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871 (China); High Energy Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, U.S.A (United States); Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637 (United States); Khalil, Shaaban [Centre for Theoretical Physics, The British University in Egypt, El Sherouk City, Postal No. 11837, P.O. Box 43 (Egypt); Department of Mathematics, Ain Shams University, Faculty of Science, Cairo 11566 (Egypt); Ma, Ernest [Department of Physics and Astronomy, University of California, Riverside, California 92521 (United States); Okada, Hiroshi [School of Physics, KIAS, Seoul 130-722 (Korea, Republic of)

    2011-10-01T23:59:59.000Z

    We discuss how {theta}{sub 13}{ne}0 is accommodated in a recently proposed renormalizable model of neutrino mixing using the non-Abelian discrete symmetry T{sub 7} in the context of a supersymmetric extension of the standard model with gauged U(1){sub B-L}. We predict a correlation between {theta}{sub 13} and {theta}{sub 23}, as well as the effective neutrino mass m{sub ee} in neutrinoless double beta decay.

  13. LANL Plutonium-Processing Facilities National Security

    E-Print Network [OSTI]

    55 (TA-55). TA-55 is the nation's most modern plu- tonium science and manufacturing facility, including world-class manufacturing capabilities for solving significant national security challenges and nondestructive analysis laboratories. Additionally, TA-55 can safely and securely ship, receive, handle

  14. Hafnium-doped tantalum oxide high-k gate dielectric films for future CMOS technology

    E-Print Network [OSTI]

    Lu, Jiang

    2007-04-25T23:59:59.000Z

    of the doped films were explained by their compositions and bond structures. The Hf-doped TaOx film is a potential high-k gate dielectric for future MOS transistors. A 5 Ã?Â? tantalum nitride (TaNx) interface layer has been inserted between the Hf-doped Ta...

  15. National Aeronautics and Space Administration April 2012

    E-Print Network [OSTI]

    Council Reports TA08-28 5.1. NRC Recommended Revisions to the TABS TA08-29 5.2. NRC Prioritization TA08 and prioritization of NASA's space technology activities. This document presents the DRAFT Technology Area 08 input, as well as any other particles, electromagnetic fields, both DC and AC, acoustic energy, seismic energy

  16. FILM STUDIES www.theaterarts.pdx.edu

    E-Print Network [OSTI]

    Culture Science Fiction Cinema Trading Places: Racial and Gender Transformations in Film and Visual or TA 135 Classic Movies (4) ENG 304 Critical Approaches to Cinema (4) 20 Credits: 20 elective credits American Cinema and Culture I, II (4, 4) TA 408 Wksp: Directing Actors for the Camera (3-4) TA 408 Wksp

  17. Physical Activity and all-cause mortality across levels of general and abdominal adiposity: The European Prospective Investigation into Cancer and Nutrition Study (EPIC)

    E-Print Network [OSTI]

    Ekelund, Ulf; Ward, Heather A; Norat, Teresa; Luan, Jian'an; May, Anne M; Weiderpass, Elisabete; Sharp, Stephen S; Overvad, Kim; Østergaard, Jane Nautrup; Tjønneland, Anne; Johnsen, Nina Føns; Mesrine, Sylvie; Fournier, Agnès; Fagherazzi, Guy; Trichopoulou, Antonia; Lagiou, Pagona; Trichopoulos, Dimitrios; Li, Kuanrong; Kaaks, Rudolf; Ferrari, Pietro; Licaj, Idlir; Jenab, Mazda; Bergmann, Manuela; Boeing, Heiner; Palli, Domenico; Sieri, Sabina; Panico, Salvatore; Tumino, Rosario; Vineis, Paolo; Peeters, Petra H; Monnikhof, Evelyn; Bueno-de-Mesquita, H Bas; Ramón Quirós, J.; Agudo, Antonio; Sánchez, María-José; Huerta, José María; Ardanaz, Eva; Arriola, Larraitz; Hedblad, Bo; Wirfält, Elisabet; Sund, Malin; Johansson, Mattias; Key, Timothy J; Travis, Ruth C; Khaw, Kay-Tee; Brage, Søren; Wareham, Nicholas J; Riboli, Elio

    2015-01-14T23:59:59.000Z

    for more than twice as many deaths as general obesity in this European population. Finally, we calculated the PAF and gain in life expectancy for avoiding TA BL E 1 Sa m pl e si ze , le ng th of fo ll ow -u p, ag e at re cr ui tm en t, an d fr eq ue nc y... , may differ between populations. However, the advantage of exam- ining the PAFs for these risk factors within a single cohort using the observed prevalence estimates is the ability to compare the relative importance of physical inactivity and central...

  18. Slovar?ek središkega govora (na osnovi zapisov Karla Ozvalda)

    E-Print Network [OSTI]

    Greenberg, Marc L.

    1999-01-01T23:59:59.000Z

    . sr. 'Eelo' talom (111: 25) D mn. EamQr sam. m. 'Zorn' tamp (I: 42) I/T ed. Eamzran prid. 'strupen, jezen' tamaran (IV: 5) I ed. Ezp Sam. m. 'Eep' tap (11: 15, 29, IV: 5) I ed. tepmi (111: 37) 0 mn. (Eapeti) glag. 'Eepeti' tapg/ta- pgt...., bodi (11: 20) vel. 2. 0s. ed. (biti) glag. 'biti, tepsti' bi (IV: 14) vel. 2. 0s. ed., b?t (111: 90) del. -t m. bl$go sam. sr. 'blago' bldgo (11: 31) 1 ed. (blato) sam. sr. 'blato' blatom (111: 25) D mn. bled prid. 'bled' bled (11: 32) 1 ed...

  19. Influence of misonidazole, SR-2508, RSU-1069 and WR-2721 on spontaneous metastases in C57BL mice

    SciTech Connect (OSTI)

    Kanclerz, A.; Chapman, J.D.

    1988-02-01T23:59:59.000Z

    The effect of treatments with the hypoxic cell radiosensitizers misonidazole (MISO), SR-2508, RSU-1069, and with the radioprotector WR-2721 on spontaneously disseminated Lewis lung carcinoma (LLC) and B16 melanoma (B16M) was investigated. Tumors were implanted into the tails of C57BL mice and were surgically removed after reaching volumes of approximately 40 mm3. This technique results in the induction of metastatic disease in lungs and at other anatomical sites and allows the independent treatment of disseminated tumor cells. The radiosensitizers and the radioprotector were administered 24 hr after surgery and animals were killed 14 and 30 days after removal of LLC and B16M, respectively. The time to death from spontaneous metastases was also measured. Both single treatments with large doses of MISO (1.0 g/kg) and fractionated therapy with smaller doses (0.5 g/kg on 5 consecutive days) promoted the formation of metastases to the lungs, lymph nodes and other organs. The survival times of MISO treated animals did not differ from control animals but manifestation of metastatic disease in the lungs and other organs occurred at earlier times. Administration of equitoxic doses of SR-2508 (3.0 g/kg) and RSU-1069 (0.1 g/kg) also promoted metastases formation. Mice treated with these radiosensitizers developed more metastases in the lungs and at other sites. Treatment with a single dose of WR-2721 (0.4 g/kg) promoted lung metastases but exerted a suppressive effect on lymph node tumors. When the radioprotector was given in fractionated schedules in three different doses (0.05 g/kg, 0.1 g/kg and 0.2 g/kg for 10 consecutive days) a slight enhancement of lung metastases and suppression of extrapulmonary metastases was observed.

  20. The Intra-Night Optical Variability of the bright BL Lac object S5 0716+714

    E-Print Network [OSTI]

    F. Montagni; A. Maselli; E. Massaro; R. Nesci; S. Sclavi; M. Maesano

    2005-12-19T23:59:59.000Z

    We address the topic of the Intra-Night Optical Variability of the BL Lac object S5 0716+714. To this purpose a long term observational campaign was performed, from 1996 to 2003, which allowed the collection of a very large data set, containing 10,675 photometric measurements obtained in 102 nights. The source brightness varied in a range of about 2 mag, although the majority of observations were performed when it was in the range 13.0 < R < 13.75. Variability time scales were estimated from the rates of magnitude variation, which were found to have a distribution function well fitted by an exponential law with a mean value of 0.027 mag/h, corresponding to an e-folding time scale of the flux tau_F = 37.6 h. The highest rates of magnitude variation were around 0.10--0.12 mag/h and lasted less than 2 h. These rates were observed only when the source had an R magnitude < 13.4, but this finding cannot be considered significant because of the low statistical occurrence. The distribution of tau_F has a well defined modal value at 19 h. Assuming the recent estimate of the beaming factor delta about 20, we derived a typical size of the emitting region of about 5 times 10^{16}/(1 + z) cm. The possibility to search for a possible correlation between the mean magnitude variation rate and the long term changes of the velocity of superluminal components in the jet is discussed.

  1. Studies of Secondary Melanoma on C57BL/6J Mouse Liver Using 1H NMR Metabolomics

    SciTech Connect (OSTI)

    Feng, Ju; Isern, Nancy G.; Burton, Sarah D.; Hu, Jian Z.

    2013-10-31T23:59:59.000Z

    NMR metabolomics, consisting of solid state high resolution (hr) magic angle spinning (MAS) 1H NMR (1H hr-MAS), liquid state high resolution 1H-NMR, and principal components analysis (PCA) has been used to study secondary metastatic B16-F10 melanoma in C57BL/6J mouse liver . The melanoma group can be differentiated from its control group by PCA analysis of the absolute concentrations or by the absolute peak intensities of metabolites from either 1H hr-MAS NMR data on intact liver tissues or liquid state 1H-NMR spectra on liver tissue extracts. In particular, we found that the absolute concentrations of alanine, glutamate, creatine, creatinine, fumarate and cholesterol are elevated in the melanoma group as compared to controls, while the absolute concentrations of succinate, glycine, glucose, and the family of linear lipids including long chain fatty acids, total choline and acylglycerol are decreased. The ratio of glycerophosphocholine to phosphocholine is increased by about 1.5 fold in the melanoma group, while the absolute concentration of total choline is actually lower in melanoma mice. These results suggest the following picture in secondary melanoma metastasis: Linear lipid levels are decreased by beta oxidation in the melanoma group, which contributes to an increase in the synthesis of cholesterol, and also provides an energy source input for TCA cycle. These findings suggest a link between lipid oxidation, the TCA cycle and the hypoxia-inducible factors (HIF) signal pathway in tumor metastases. Thus this study indicates that the metabolic profile derived from NMR analysis can provide a valuable bio-signature of malignancy and cell hypoxia in metastatic melanoma.

  2. ERRATIC JET WOBBLING IN THE BL LACERTAE OBJECT OJ287 REVEALED BY SIXTEEN YEARS OF 7 mm VLBA OBSERVATIONS

    SciTech Connect (OSTI)

    Agudo, Ivan; Gomez, Jose L. [Instituto de Astrofisica de Andalucia, CSIC, Apartado 3004, 18080 Granada (Spain); Marscher, Alan P.; Jorstad, Svetlana G. [Institute for Astrophysical Research, Boston University, 725 Commonwealth Avenue, Boston, MA 02215 (United States); Perucho, Manel [Departament d'Astronomia i Astrofisica, Universitat de Valencia, Dr. Moliner 50, E-46100 Burjassot, Valencia (Spain); Piner, B. Glenn [Department of Physics and Astronomy, Whittier College, 13406 East Philadelphia Street, Whittier, CA 90608 (United States); Rioja, Maria [Observatorio Astronomico Nacional, Apdo. 112, E-28803 Alcala de Henares, Madrid (Spain); Dodson, Richard, E-mail: iagudo@iaa.es [ICRAR/University of Western Australia, 35 Stirling Highway, Crawley, WA 6009 (Australia)

    2012-03-01T23:59:59.000Z

    We present the results from an ultra-high-resolution 7 mm Very Long Baseline Array study of the relativistic jet in the BL Lacertae object OJ287 from 1995 to 2011 containing 136 total intensity images. Analysis of the image sequence reveals a sharp jet-position-angle swing by >100 Degree-Sign during [2004,2006], as viewed in the plane of the sky, which we interpret as the crossing of the jet from one side of the line of sight to the other during a softer- and longer-term swing of the inner jet. Modulating such long-term swing, our images also show for the first time a prominent erratic wobbling behavior of the innermost {approx}0.4 mas of the jet with fluctuations in position angle of up to {approx}40 Degree-Sign over timescales {approx}2 yr. This is accompanied by highly superluminal motions along non-radial trajectories, which reflect the remarkable non-ballistic nature of the jet plasma on these scales. The erratic nature and short timescales of the observed behavior rule out scenarios such as binary black hole systems, accretion disk precession, and interaction with the ambient medium as possible origins of the phenomenon on the scales probed by our observations, although such processes may cause longer-term modulation of the jet direction. We propose that variable asymmetric injection of the jet flow, perhaps related to turbulence in the accretion disk, coupled with hydrodynamic instabilities leads to the non-ballistic dynamics that causes the observed non-periodic changes in the direction of the inner jet.

  3. US006752007Bl

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItem Not FoundInformation DOEInformation Summary Big*Thee n0738F 241.3NUCLEARll

  4. US006753741Bl

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItem Not FoundInformation DOEInformation Summary Big*Thee n0738F 241.3NUCLEARll11

  5. Jessi3bl's blog

    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 are8COaBulkTransmissionSitingProcess.pdfGetecGtelInterias SolarJaneJefferson, Iowa:Jerome County,Jerusalem College

  6. Disentangling the synchrotron and Inverse Compton variability in the X-ray emission of the intermediate BL Lac object S5 0716+71

    E-Print Network [OSTI]

    E. Ferrero; S. J. Wagner; D. Emmanoulopoulos; L. Ostorero

    2006-07-24T23:59:59.000Z

    The possibility to detect simultaneously in the X-ray band the synchrotron and Inverse Compton (IC)emission of intermediate BL Lac objects offers the unique opportunity to study contemporaneously the low- and high-energy tails of the electron distribution in the jets of these sources. We attempted to disentangle the X-ray spectral variability properties of both the low- and high-energy ends of the synchrotron and Inverse Compton emission of the intermediate BL Lac object S5 0716+71. We carried out spectral, temporal and cross-correlation analyses of the data from a long XMM-Newton pointing of S5 0716+71 and we compared our findings with previous results from past X-ray observations. Strong variability was detected during the XMM exposure.Both the synchrotron and Inverse Compton components were found to vary on time scales of hours, implying a size of the emitting region of $R\\la 0.7\\delta /(1+z)$ light-hours. The synchrotron emission was discovered to become dominant during episodes of flaring activity, following a harder-when-brighter trend. Tight correlations were observed between variations in different energy bands. Upper limits on time lags between the soft and hard X-ray light curves are of the order of a few hundred seconds.

  7. SIMULTANEOUS B'V'R' MONITORING OF BL LACERTAE OBJECT S5 0716+714 AND DETECTION OF INTER-BAND TIME DELAY

    SciTech Connect (OSTI)

    Wu Jianghua; He Xiangtao [Department of Astronomy, Beijing Normal University, Beijing 100875 (China); Boettcher, Markus [Astrophysical Institute, Department of Physics and Astronomy, Ohio University, Athens, OH 45701 (United States); Zhou Xu; Ma Jun; Jiang Zhaoji, E-mail: jhwu@bnu.edu.cn [Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012 (China)

    2012-05-15T23:59:59.000Z

    We present the results of our optical monitoring of the BL Lac object S5 0716+714 over seven nights in 2006 December. The monitoring was carried out simultaneously at three optical wavelengths with a novel photometric system. The object did not show large-amplitude internight variations during this period. Intranight variations were observed on four nights and probably on one more. Strong bluer-when-brighter chromatism was detected on both intranight and internight timescales. The intranight variation amplitude decreases in the wavelength sequence of B', R', and V'. Cross-correlation analyses revealed that the variability at the B' and V' bands leads that at the R' band by about 30 minutes on one night.

  8. Simultaneous B'V'R' Monitoring of BL Lacertae Object S5~0716+714 and Detection of Inter-Band Time Delay

    E-Print Network [OSTI]

    Wu, Jianghua; Zhou, Xu; He, Xiangtao; Ma, Jun; Jiang, Zhaoji

    2012-01-01T23:59:59.000Z

    We present the results of our optical monitoring of the BL Lac object S5 0716+714 on seven nights in 2006 December. The monitoring was carried out simultaneously at three optical wavelengths with a novel photometric system. The object did not show large-amplitude internight variations during this period. Intranight variations were observed on four nights and probably on one more. Strong bluer-when-brighter chromatism was detected on both intranight and internight timescales. The intranight variation amplitude decreases in the wavelength sequence of B', R', and V'. Cross correlation analyses revealed that the variability at the $B'$ and $V'$ bands lead that at the $R'$ band by about 30 minutes on one night.

  9. Zeeman tomography of magnetic white dwarfs IV. The complex field structure of the polars EF Eri, BL Hyi, and CP Tuc

    E-Print Network [OSTI]

    K. Beuermann; F. Euchner; K. Reinsch; S. Jordan; B. T. Gaensicke

    2006-10-26T23:59:59.000Z

    The magnetic fields of the accreting white dwarfs (WDs) in magnetic cataclysmic variables (mCVs) determine the accretion geometries, the emission properties, and the secular evolution of these objects. We determine the structure of the surface magnetic fields of the WDs primaries in magnetic CVs using Zeeman tomography. Our study is based on orbital-phase resolved optical flux and circular polarization spectra of the polars EF Eri, BL Hyi, and CP Tuc obtained with FORS1 at the ESO VLT. An evolutionary algorithm is used to synthesize best fits to these spectra from an extensive database of pre-computed Zeeman spectra. The general approach has been described in previous papers of this series. The results achieved with simple geometries as centered or offset dipoles are not satisfactory. Significantly improved fits are obtained for multipole expansions that are truncated at degree l(max)=3 or 5 and include all tesseral and sectoral components with 0<=m<=l. The most frequent field strengths of 13, 18, and 10MG for EF Eri, BL Hyi, CP Tuc and the ranges of field strength covered are similar for the dipole and multipole models, but only the latter provide access to accreting matter at the right locations on the WD. The results suggest that the field geometries of the WDs in short-period mCVs are quite complex with strong contributions from multipoles higher than the dipole in spite of a typical age of the WDs in CVs in excess of 1 Gyr. It is feasible to derive the surface field structure of an accreting WD from phase-resolved low-state circular spectropolarimetry of sufficiently high signal-to-noise ratio. The fact that independent information is available on the strength and direction of the field in the accretion spot from high-state observations helps in unraveling the global field structure.

  10. Methods for processing tantalum films of controlled microstructures and properties

    SciTech Connect (OSTI)

    Narayan, J.; Bhosle, V.; Tiwari, A.; Gupta, A.; Kumar, P.; Wu, R. [Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27695-7916 and NSF Center for Advanced Materials and Smart Structures, North Carolina State University, Raleigh, North Carolina 27695-7916 (United States); H. C. Starck, Inc., 45 Industrial Place, Newton, Massachusetts 02161-1951 (United States)

    2006-09-15T23:59:59.000Z

    The authors have fabricated thin films of alpha tantalum ({alpha}-Ta) with crystalline and amorphous structures by nonequilibrium pulsed laser deposition techniques, and compared their electrical properties and diffusion characteristics with those of polycrystalline beta tantalum ({beta}-Ta) films produced by magnetron sputtering. The microstructure and atomic structure of these films were studied by x-ray diffraction and high-resolution electron microscopy, while elemental analysis was performed using electron energy-loss spectroscopy and x-ray dispersive analysis. The {alpha}-Ta with body-centered-cubic structure was formed only under clean, impurity-free conditions of laser molecular beam epitaxy. The resistivity measurements in the temperature range of 10-300 K showed room-temperature values to be 15-30 {mu}{omega} cm for {alpha}-Ta, 180-200 {mu}{omega} cm for {beta}-Ta, and 250-275 {mu}{omega} cm for amorphous tentalum (a-Ta). The temperature coefficients of resistivity (TCRs) for {alpha}-Ta and {beta}-Ta were found to be positive with characteristic metallic behavior, while TCR for a-Ta was negative, characteristic of high-resistivity disordered metals. The authors discuss the mechanism of formation of a-Ta and show that it is stable in the temperature range of 650-700 deg. C. Electron energy-loss spectroscopy (EELS) and Rutherford backscattering measurements showed oxygen content in a-Ta films to be less than 0.1%. The secondary ion mass spectrometry, scanning transmission electron microscope Z-contrast imaging, and EELS studies show that, after 650 deg. C annealing for 1 h, a-Ta films have less than 10 nm Cu diffusion distance while polycrystalline Ta films have substantial Cu diffusion. The superior diffusion barrier properties of a-Ta for Cu metallization have been attributed to the lack of grain boundaries which usually lead to enhanced diffusion in the case of polycrystalline {alpha}-Ta and {beta}-Ta films. Thus, superior diffusion properties of a-Ta provide an optimum solution for copper metallization in next-generation silicon microelectronic devices.

  11. Allemann, J.A., Y. Xia, R.E. Morriss, A.P. Wilkinson, H. Eckert, J.S. Speck, C.G. Levi, F.F. Lange, and S.A. Anderson, "Crystallization behavior of Li1-5xTa1+xO3 glasses synthesized from liquid precursors", J.

    E-Print Network [OSTI]

    Bigelow, Stephen

    and solid electrotyte polymers with interpenetrating network morphology," Appl. Phys. Lett., Vol. 68, pg

  12. ISSN 0095-4527, Cytology and Genetics, 2008, Vol. 42, No. 4, pp. 267271. Allerton Press, Inc., 2008. Original Russian Text I.A. Kozeretskaya, A.V. Protsenko, E.S. Afanas'eva, S.R. Rushkovskii, A.I. Chuba, T.A. Mousseau, A.P. Meller, 2008, published in T

    E-Print Network [OSTI]

    Mousseau, Timothy A.

    . 63­68. 267 INTRODUCTION More than 20 years have passed since the accident at the Chernobyl nuclear population has been observed in the exclusion zone of the Chernobyl nuclear power plant-lived radioactive isotopes as a consequence of the accident at the Chernobyl nuclear power plant. This means

  13. lt~whnni<'a t't IJinl~hy+U'a .,h ta, 1111(II It~tJ2) 83-t+1 ~3 ~' lt/t)2 Elf,evict Science I+'ubli~,hersI:I.V. All rights rcscr',cd (llltlS-272h/92/S+lf,.(10

    E-Print Network [OSTI]

    Allen, John F.

    -stressed Dunaliel& salina (green alga) to physiological growth conditions: changes in antenna size and composition

  14. Parton energy loss limits and shadowing in DrellYan dimuon production M.A. Vasiliev i \\Lambda , M.E. Beddo g , C.N. Brown c , T.A. Carey f , T.H. Chang gy , W.E. Cooper c , C.A. Gagliardi i ,

    E-Print Network [OSTI]

    Parton energy loss limits and shadowing in Drell­Yan dimuon production M.A. Vasiliev i \\Lambda , M Ridge, TN 37831 i Texas A & M University, College Station, TX 77843 j Valparaiso University, Valparaiso­parton momentum fraction set tight limits on the energy loss of quarks passing through a cold nucleus. 24.85.+p

  15. Detection of TeV Gamma-Rays from the BL Lac 1ES1959+650 in its low states and during a major outburst in 2002

    E-Print Network [OSTI]

    Aharonian, F A; Borst, H G; Bojahr, H; Bolz, O; Coarasa, T; Contreras, J L; Cortina, J; Denninghoff, S; Fonseca, M V; Girma, M; Götting, N; Heinzelmann, G; Hermann, G; Heusler, A; Hofmann, W; Horns, D; Jung, I; Kankanyan, R; Kestel, M; Kohnle, A; Konopelko, A; Kornmeyer, H; Kranich, D; Lampeitl, H; López, M; Lorenz, E; Lucarelli, F; Mang, O; Meyer, H; Mirzoyan, R; Moralejo, A; Oña-Wilhelmi, E; Panter, M; Plyasheshnikov, A V; Pühlhofer, G; De los Reyes, R; Rhode, W; Ripken, G; Robrade, J; Rowell, G; Sahakian, V V; Samorski, M; Schilling, M; Siems, M; Sobzynska, D; Stamm, W; Tluczykont, M; Vitale, V; Völk, H J; Wiedner, C A; Wittek, W

    2003-01-01T23:59:59.000Z

    TeV gamma-rays from the BL Lac object 1ES1959+650 have been measured during the years 2000 and 2001 with a significance of 5.2 sigma at a value of 5.3% of the Crab flux and in May 2002 during strong outbursts with > 23 sigma at a flux level of up to 2.2 Crab, making 1ES1959+650 the TeV Blazar with the third best event statistics. The deep observation of 197.4 h has been performed with the HEGRA stereoscopic system of 5 imaging atmospheric Cherenkov telescopes (IACT system). 1ES1959+650 is located at a redshift of z = 0.047, providing an intermediate distance between the nearby Blazars Mkn 421 and Mkn 501, and the much more distant object H1426+428. This makes 1ES1959+650 an important candidate of the class of TeV Blazars in view of the absorption of TeV photons by the diffuse extragalactic background radiation (DEBRA). The differential energy spectrum of 1ES1959+650 during the flares can be well described by a power law with an exponential cut-off at (4.2 (+0.8 -0.6)_stat +- 0.9_sys) TeV and a spectral index ...

  16. Perplexing correlations between Gamma-ray emission and parsec-scale jet orientation variations in the BL Lac object S5 0716+714

    E-Print Network [OSTI]

    Rani, B; Marscher, A P; Jorstad, S G; Hodgson, J A; Fuhrmann, L; Zensus, J A

    2015-01-01T23:59:59.000Z

    The analysis of $\\gamma$-ray flux variability along with the parsec-scale jet kinematics suggests that the high-energy radiation in the BL Lac object S5 0716+714 has a significant correlation with the mm-VLBI core flux density and with the local orientation of the inner jet flow. For the first time in any blazar, we report a significant correlation between the $\\gamma$-ray flux variations and the variations in the local orientation of the jet outflow (position angle). We find that the $\\gamma$-ray flux variations lead the 7~mm VLBI core flux variations by 82$\\pm$32~days, which suggests that the high-energy emission in S5 0716+714 is coming from a region located 3.8$\\pm$1.9~parsecs closer to the central black hole than the "core" seen on the mm-VLBI images. The results imply a strong physical and casual connection between $\\gamma$-ray emission and the inner jet morphology in the source.

  17. Optical-IUE observations of the gamma-ray loud BL Lacertae object S5 0716+714: data and interpretation

    E-Print Network [OSTI]

    G. Ghisellini; M. Villata; C. M. Raiteri; S. Bosio; G. De Francesco; G. Latini; M. Maesano; E. Massaro; F. Montagni; R. Nesci; G. Tosti; M. Fiorucci; E. Pian; L. Maraschi; A. Treves; A. Comastri; M. Mignoli

    1997-06-25T23:59:59.000Z

    We monitored the BL Lac object S5 0716+714 in the optical band during the period November 1994-April 1995, which includes the time of a gamma-ray observation by the Energetic Gamma Ray Experiment Telescope (EGRET) on February 14--28, 1995. The light curves in the R and B bands show fast fluctuations superimposed on longer timescale variations. The color index correlates with intensity during the rapid flares (the spectrum is flatter when the flux is higher), but it is rather insensitive to the long term trends. Over the 5 month observational period the light curve shows an overall brightening of about 1 mag followed by a fast decline. The EGRET pointing covers part of the very bright phase (V about 13.2) and the initial decline. An ultraviolet spectrum was also obtained with the International Ultraviolet Explorer (IUE) (1200-3000 A) during the EGRET observations. The variability of the optical emission of S5 0716+714 by itself sets important constraints on the magnetic field strength and on the physical processes responsible for it. Interpreting the whole electromagnetic spectrum with synchrotron self Compton models leads to the prediction of a bright gamma-ray state during the EGRET pointing. We discuss how the gamma-ray data could be used as a diagnostic of the proposed models.

  18. JOURNAL DE PHYSIQUE IV Colloque C3, supplment au Journal de Physique III, Volume 5, avril 1995 C3-217

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    of solidified droplets, including pure metals (W, Re, Ta, Mo, Nb, Ir, Zr) and alloys (W-Re, Mo-Re, Ta diagramme de phases ont été privilégiés : présence de phases complexes a et % (Re-W, Mo-Re) ou existence d surfusions importantes, jusqu'à 900 K pour Re [2], ont été atteintes sur sept métaux : W, Re, Ta, Mo, Nb, Ir

  19. Dose dependence of mechanical properties in tantalum and tantalum alloys after low temperature irradiation

    SciTech Connect (OSTI)

    Byun, Thak Sang [ORNL

    2008-01-01T23:59:59.000Z

    The dose dependence of mechanical properties was investigated for tantalum and tantalum alloys after low temperature irradiation. Miniature tensile specimens of three pure tantalum metals, ISIS Ta, Aesar Ta1, Aesar Ta2, and one tantalum alloy, Ta-1W, were irradiated by neutrons in the High Flux Isotope Reactor (HFIR) at ORNL to doses ranging from 0.00004 to 0.14 displacements per atom (dpa) in the temperature range 60 C 100 oC. Also, two tantalum-tungsten alloys, Ta-1W and Ta-10W, were irradiated by protons and spallation neutrons in the LANSCE facility at LANL to doses ranging from 0.7 to 7.5 dpa and from 0.7 to 25.2 dpa, respectively, in the temperature range 50 C 160 oC. Tensile tests were performed at room temperature and at 250oC at nominal strain rates of about 10-3 s-1. All neutron-irradiated materials underwent progressive irradiation hardening and loss of ductility with increasing dose. The ISIS Ta experienced embrittlement at 0.14 dpa, while the other metals retained significant necking ductility. Such a premature embrittlement in ISIS Ta is believed to be because of high initial oxygen concentrations picked up during a pre-irradiation anneal. The Ta-1W and Ta-10W specimens irradiated in spallation condition experienced prompt necking at yield since irradiation doses for those specimens were high ( 0.7 dpa). At the highest dose, 25.2 dpa, the Ta-10W alloy specimen broke with little necking strain. Among the test materials, the Ta-1W alloy displayed the best combination of strength and ductility. The plastic instability stress and true fracture stress were nearly independent of dose. Increasing test temperature decreased strength and delayed the onset of necking at yield.

  20. Tory A. Hendry USDA-NIFA Postdoctoral Fellow

    E-Print Network [OSTI]

    Silver, Whendee

    . Kent, R. Li, R.W. Jobson, T.A. Hendry, D.W. Taylor, C.M. Testa, & M. Ambros. (2007) A non.F. Estabrook, T.A. Hendry, D.W. Taylor, C.M. Testa, M. Ambros, B. Crandall-Stotler, R.J. Duff, M. Stech, W: 331­338. Hendry, T.A., J.R. de Wet, and P.V. Dunlap. (2014) Genomic signatures of obligate host

  1. The effects of protein level and feeding methods on egg production

    E-Print Network [OSTI]

    Williams, James Cecil

    1952-01-01T23:59:59.000Z

    ' msebssahgr fRe aehhm eb@sa ta ~ hLa ayg~eaa ta 5c, f, E Qua Hs@4 af the IIaItattaaek ot Nek4tg Ih&asd~ af tba kgt%egtagal aid IImataeI? aal ~ of Tesaa, Ihe hia hakyhk saggaaLhcee~ ?fI? aalu efLXSA aeyeaa ttoay to %. W. A Nxma~ ~ta Nrtaeahm hek...

  2. University of California, Berkeley Fall Semester 2010

    E-Print Network [OSTI]

    California at Berkeley, University of

    -Wesley, Reading, 1987. [TA347.F5.B87] [18] T.J.R. Hughes. The Finite Element Method; Linear Static and Dy- namic Finite Element Analysis. Prentice-Hall, Englewood Cliffs, 1987. [TA347.F5.H841](R) [19] H.R. Schwartz- fer and Fluid Dynamics. CRC Press, Boca Raton, 1993. [TA357.R43 1994] [30] G.R. Buchanan. Schaum

  3. BIOTROPICA 37(4): 631640 2005 10.1111/j.1744-7429.2005.00080.x Factors Influencing Tree Phenology in Tai National Park, C^ote d'Ivoire1

    E-Print Network [OSTI]

    in Ta¨i National Park, C^ote d'Ivoire1 Dean P. Anderson2,6, Erik. V. Nordheim3, Timothy C. Moermond2 leaf phenology for 797 trees from 38 species in the Ta¨i National Park, C^ote d'Ivoire. We determined nouvelles feuilles pour 797 arbres de 38 esp`eces dans le Parc National de Ta¨i, C^ote d'Ivoire. Nous avons

  4. Enology Services Lab Pricing Juice, Wine, Cider, Kombucha

    E-Print Network [OSTI]

    Thaxton, Christopher S.

    Enology Services Lab Pricing Juice, Wine, Cider, Kombucha Individual Rate Rate at 5 + Samples 19$ 12$ Wine #1 Alcohol, pH, SO2, TA 49$ 46$ Microbial Plating 36$ 30$ Wine #2 pH, SO2, TA, VA 52$ 47$ Microscopic Scan / Gram stain 28$ 24$ Wine #3 Alcohol, G/F, Malic, pH, SO2, TA, VA 95$ 79$ Nitrogen 19$ 13

  5. Increased accumulation of neutrophils and decreased fibrosis in the lung of NADPH oxidase-deficient C57BL/6 mice exposed to carbon nanotubes

    SciTech Connect (OSTI)

    Shvedova, A.A. [Pathology and Physiology Research Branch, Health Effects Laboratory Division, National Institute for Occupational Safety and Health, West Virginia University, Morgantown, WV (United States); Physiology and Pharmacology Department, West Virginia University, Morgantown, WV (United States)], E-mail: ats1@cdc.gov; Kisin, E.R. [Pathology and Physiology Research Branch, Health Effects Laboratory Division, National Institute for Occupational Safety and Health, West Virginia University, Morgantown, WV (United States); Murray, A.R. [Pathology and Physiology Research Branch, Health Effects Laboratory Division, National Institute for Occupational Safety and Health, West Virginia University, Morgantown, WV (United States); Physiology and Pharmacology Department, West Virginia University, Morgantown, WV (United States); Kommineni, C. [Pathology and Physiology Research Branch, Health Effects Laboratory Division, National Institute for Occupational Safety and Health, West Virginia University, Morgantown, WV (United States); Castranova, V. [Pathology and Physiology Research Branch, Health Effects Laboratory Division, National Institute for Occupational Safety and Health, West Virginia University, Morgantown, WV (United States); Physiology and Pharmacology Department, West Virginia University, Morgantown, WV (United States); Department of Environmental and Occupational Health, University of Pittsburgh, Pittsburgh, PA (United States); Fadeel, B. [Division of Biochemical Toxicology, Institute of Environmental Medicine, Karolinska Institute Stockholm (Sweden); Kagan, V.E. [Pathology and Physiology Research Branch, Health Effects Laboratory Division, National Institute for Occupational Safety and Health, West Virginia University, Morgantown, WV (United States); Department of Environmental and Occupational Health, University of Pittsburgh, Pittsburgh, PA (United States)

    2008-09-01T23:59:59.000Z

    Single-walled carbon nanotubes (SWCNT) have been introduced into a large number of new technologies and consumer products. The combination of their exceptional features with very broad applications raised concerns regarding their potential health effects. The prime target for SWCNT toxicity is believed to be the lung where exposure may occur through inhalation, particularly in occupational settings. Our previous work has demonstrated that SWCNT cause robust inflammatory responses in rodents with very early termination of the acute phase and rapid onset of chronic fibrosis. Timely elimination of polymorphonuclear neutrophils (PMNs) through apoptosis and their subsequent clearance by macrophages is a necessary stage in the resolution of pulmonary inflammation whereby NADPH oxidase contributes to control of apoptotic cell death and clearance of PMNs. Thus, we hypothesized that NADPH oxidase may be an important regulator of the transition from the acute inflammation to the chronic fibrotic stage in response to SWCNT. To experimentally address the hypothesis, we employed NADPH oxidase-deficient mice which lack the gp91{sup phox} subunit of the enzymatic complex. We found that NADPH oxidase null mice responded to SWCNT exposure with a marked accumulation of PMNs and elevated levels of apoptotic cells in the lungs, production of pro-inflammatory cytokines, decreased production of the anti-inflammatory and pro-fibrotic cytokine, TGF-{beta}, and significantly lower levels of collagen deposition, as compared to C57BL/6 control mice. These results demonstrate a role for NADPH oxidase-derived reactive oxygen species in determining course of pulmonary response to SWCNT.

  6. The BL Lac objects OQ 530 and S5 0716+714. Simultaneous observations in the X-rays, radio, optical and TeV bands

    E-Print Network [OSTI]

    G. Tagliaferri; M. Ravasio; G. Ghisellini; P. Giommi; E. Massaro; R. Nesci; G. Tosti; M. F. Aller; H. D. Aller; A. Celotti; L. Maraschi; F. Tavecchio; A. Wolter

    2003-01-07T23:59:59.000Z

    We present the results of the BeppoSAX observations of two BL Lacs, OQ 530 and S5 0716+714, as part of a ToO program for the simultaneous observation at radio, optical, X-ray and TeV energies. Both sources are detected in the LECS and MECS, with S5 0716+714 visible also in the PDS band, up to about 60 keV. The X-ray spectra of both sources are better fitted by a double power-law model, with a steep soft X-ray component flattening at harder energies, with breaks at 0.3 and 1.5 keV, respectively. The concave shape of the spectra in both objects is consistent with soft X-rays being produced by the synchrotron and harder X-rays by the inverse Compton processes. Also the X-ray variability properties confirm this scenario, in particular for S5 0716+714 our observation shows variations by about a factor 3 over one hour below 3 keV and no variability above. Their simultaneous broad band energy spectral distributions can be successfully interpreted within the frame of a homogeneous synchrotron and inverse Compton model, including a possible contribution from an external source of seed photons with the different spectral states of S5 0716+714 being reproduced by changing the injected power. The resulting parameters are fully consistent with the two sources being intermediate objects within the "sequence" scenario proposed for blazars.

  7. Space-VLBI Polarimetry of the BL Lac Object S5 0716+714: Rapid Polarization Variability in the VLBI core

    E-Print Network [OSTI]

    U. Bach; T. P. Krichbaum; A. Kraus; A. Witzel; J. A. Zensus

    2006-03-31T23:59:59.000Z

    To determine the location of the intra-day variable (IDV) emission region within the jet of the BL Lac object S5 0716+714, a multi-epoch VSOP polarization experiment was performed in Autumn 2000. To detect, image, and monitor the short term variability of the source, three space-VLBI experiments were performed with VSOP at 5 GHz, separated in time by six days and by one day. Quasi-contemporaneous flux density measurements with the Effelsberg 100 m radio telescope during the VSOP observations revealed variability of about 5% in total intensity and up to 40% in linear polarization in less than one day. Analysis of the VLBI data shows that the variations are located inside the VLBI core component of 0716+714. In good agreement with the single-dish measurements, the VLBI ground array images and the VSOP images, both show a decrease in the total flux density of ~20 mJy and a drop of ~5 mJy in the linear polarization of the VLBI core. During the observing interval, the polarization angle rotated by about 15 degrees. No variability was found in the jet. The high angular-resolution VSOP images are not able to resolve the variable component and set an upper limit of <0.1 mas to the size of the core component. From the variability timescales we estimate a source size of a few micro-arcseconds and brightness temperatures exceeding 10^15 K. We discuss the results in the framework of source-extrinsic (interstellar scintillation induced) and source-intrinsic IDV models.

  8. o-p?-DDT-mediated uterotrophy and gene expression in immature C57BL/6 mice and Sprague–Dawley rats

    SciTech Connect (OSTI)

    Kwekel, Joshua C.; Forgacs, Agnes L. [Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, MI (United States); Center for Integrative Toxicology, Michigan State University, East Lansing, MI (United States); Williams, Kurt J. [Pathobiology and Diagnostic Investigation, Michigan State University, East Lansing, MI (United States); Zacharewski, Timothy R., E-mail: tzachare@msu.edu [Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, MI (United States); Center for Integrative Toxicology, Michigan State University, East Lansing, MI (United States)

    2013-12-15T23:59:59.000Z

    1,1,1-Trichloro-2,2-bis(2-chlorophenyl-4-chlorophenyl)ethane (o,p?-DDT) is an organochlorine pesticide and endocrine disruptor known to activate the estrogen receptor. Comprehensive ligand- and species-comparative dose- and time-dependent studies were conducted to systematically assess the uterine physiological, morphological and gene expression responses elicited by o,p?-DDT and ethynyl estradiol (EE) in immature ovariectomized C57BL/6 mice and Sprague–Dawley rats. Custom cDNA microarrays were used to identify conserved and divergent differential gene expression responses. A total of 1256 genes were differentially expressed by both ligands in both species, 559 of which exhibited similar temporal expression profiles suggesting that o,p?-DDT elicits estrogenic effects at high doses when compared to EE. However, 51 genes exhibited species-specific uterine expression elicited by o,p?-DDT. For example, carbonic anhydrase 2 exhibited species- and ligand-divergent expression as confirmed by quantitative real-time PCR. The identification of comparable temporal phenotypic responses linked to gene expression demonstrates that systematic comparative gene expression assessments are valuable for elucidating conserved and divergent estrogen signaling mechanisms in rodent uterotrophy. - Highlights: • o,p?-DDT and enthynyl estradiol (EE) both elicit uterotrophy in mice and rats. • o,p?-DDT and EE have different kinetics in uterine wet weight induction. • o,p?-DDT elicited stromal hypertrophy in rats but myometrial hypertrophy in mice. • 1256 genes were differentially expressed by both ligands in both species. • Only 51 genes had species-specific uterine expression.

  9. advance alignment system: Topics by E-print Network

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

    (TA) algorithm to process large collections of Chinese questions Hsu, Wen-Lian 210 Hydrogen Evolution on Hydrophobic Aligned Carbon Nanotube Physics Websites Summary: Hydrogen...

  10. LANSCE | Training Office | User Training

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

    header TA-53 Training Office User Specific Training LANL Training Services (Internal) LANL UTRAIN (Internal) LANL EXTRAIN (External) Training Office dotline User Training Below is...

  11. LANSCE | Training Office

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

    header TA-53 Training Office User Specific Training LANL Training Services (Internal) LANL UTRAIN (Internal) LANL EXTRAIN (External) Training Office dotline Please note current...

  12. ASERsumm.indd

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

    setting of SNLNM provides a diverse range of geological, hydrological, climatic, and ecological settings. Sandia National Laboratories 4 Burrowing Owl at SNLNM near TA-IV...

  13. Zones Travel Center Spaces Address Directions Hickory Run Truck Plaza 75

    E-Print Network [OSTI]

    ), Kylertown, PA 16847 I-80 Exit 21 (PA 53) TA #068 - Lamar 100 I-80 & Hwy 64, Lamar, PA 16848 I-80 Exit 25 (PA

  14. Characteristics of Patients That Do Not Initially Respond to Intravenous Antihypertensives in the Emergency Department: Subanalysis of the CLUE Trial

    E-Print Network [OSTI]

    2015-01-01T23:59:59.000Z

    TA, et al. Accelerated hypertension- marginally elevatedeffects of acute hypertension. Am J Emerg Med. 1985;3:10-15.R, et al. Gender differences in hypertension treatment, drug

  15. EA-1375: Final Environmental Assessment

    Broader source: Energy.gov [DOE]

    Construction and Operation of a New Office Building and Related Structures within TA-3 at Los Alamos National Laboratory, Los Alamos, New Mexico

  16. EA-0874: Final Environmental Assessment

    Broader source: Energy.gov [DOE]

    Low-level Waste Drum Staging Building at Weapons Engineering Tritium Facility, TA-16 Los Alamos National Laboratory, Los Alamos, New Mexico

  17. Workshop on Computer Science and Information Technologies CSIT'2003, Ufa, Russia, 2003 Evolutionary Local Search with Variable Neighborhood for the

    E-Print Network [OSTI]

    Kochetov, Yuri

    be written as follows: .,0 ,0,, ,),(,.. min )(j 1 Jjs tKkRr Cjispsts s j tA kjk jii n + + The objective

  18. Building America Technology Solutions for New and Existing Homes...

    Energy Savers [EERE]

    Ground Source Heat Pump Research, TaC Studios Residence, Atlanta, Georigia (Fact Sheet), Building America Technology Solutions for New and Existing Homes: Ground Source Heat Pump...

  19. Development and validation of transgene constructs in order to generate bi-transgenic mice models for Diabetic Peripheral Neuropathy research

    E-Print Network [OSTI]

    Nair, Lakshmy

    2010-04-09T23:59:59.000Z

    of the reverse tetracycline-controlled transactivator protein (rtTA), called rtTA-Advanced (Figure 3c). It is more sensitive to doxycycline (Dox) and yields lower background expression than the original rtTA[21]. The rtTA-Advanced protein is a fusion of amino... advantage of using one system over the other[21]. With the Tet-Off system, it is necessary to keep tetracycline (Tc) or doxycycline (Dox) in the medium to maintain the native (off) state. Due to the relatively short half-lives of Tc and Dox, one must add...

  20. EA-1407: Final Environmental Assessment | Department of Energy

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

    Environmental Assessment EA-1407: Final Environmental Assessment Proposed TA-16 Engineering Complex Refurbishment and Consolidation at Los Alamos National Laboratory, Los...

  1. ambient temperature secondary: Topics by E-print Network

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

    ambient Environmental Sciences and Ecology Websites Summary: heat production, Q heat loss, C conductance, Tb body temperature, and Ta ambient temperature...

  2. ambient temperature comportement: Topics by E-print Network

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

    ambient Environmental Sciences and Ecology Websites Summary: heat production, Q heat loss, C conductance, Tb body temperature, and Ta ambient temperature...

  3. ambient temperature creep: Topics by E-print Network

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

    ambient Environmental Sciences and Ecology Websites Summary: heat production, Q heat loss, C conductance, Tb body temperature, and Ta ambient temperature...

  4. ambient temperatures conditions: Topics by E-print Network

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

    ambient Environmental Sciences and Ecology Websites Summary: heat production, Q heat loss, C conductance, Tb body temperature, and Ta ambient temperature...

  5. ambient temperature cured: Topics by E-print Network

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

    ambient Environmental Sciences and Ecology Websites Summary: heat production, Q heat loss, C conductance, Tb body temperature, and Ta ambient temperature...

  6. ambient temperature lithium: Topics by E-print Network

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

    ambient Environmental Sciences and Ecology Websites Summary: heat production, Q heat loss, C conductance, Tb body temperature, and Ta ambient temperature...

  7. ambient temperature grown: Topics by E-print Network

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

    ambient Environmental Sciences and Ecology Websites Summary: heat production, Q heat loss, C conductance, Tb body temperature, and Ta ambient temperature...

  8. ambient temperature rechargeable: Topics by E-print Network

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

    ambient Environmental Sciences and Ecology Websites Summary: heat production, Q heat loss, C conductance, Tb body temperature, and Ta ambient temperature...

  9. -----omissis--------ALLEGATO A (D.R. n. 790 del 10.8.2012)

    E-Print Network [OSTI]

    Genova, Università degli Studi di

    temperature dovuto alla favorevole termodinamica (l'energia libera dell' elettrolisi 237 kJ/mol a t.a e 183 k

  10. Genericity and Large Cardinals Sy D. Friedman

    E-Print Network [OSTI]

    -divisible group of the abelian scheme Pic0 X/Zp cf. [Ta] § 4 and [De-We2]. His method does not extend to bundles

  11. Influence of stand age on the magnitude and seasonality of carbon fluxes in Canadian forests

    E-Print Network [OSTI]

    2012-01-01T23:59:59.000Z

    productivity of a boreal aspen forest during and followingarea index of a boreal aspen-hazelnut forest in relation toPursh), TA: trembling aspen (Populus tremuloides Michx. ),

  12. Environnements Informatiques pour l'Apprentissage Humain, Montpellier 2005 Une aide la ringnierie d'un scnario

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    proposé dans [CORBIERE & CHOQUET 04] une extension du modèle de méta-architecture IEEE-LTSA (Learning

  13. ANL Beams and Applications Seminar

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

    characterization of the laser and electron beams of the Cornell Energy Recovery Linac Heng Li Cornell University June 18 Interbeam Scattering Studies at CesrTA Michael Ehrlichman...

  14. Microsoft Word - Annual GW Rpt_CY08_DOE.doc

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

    semivolatile organic compound SWDA Safe Water Drinking Act SWMU Solid Waste Management Unit TA Technical Area TAG Tijeras Arroyo Groundwater (Investigation) TAL Target Analyte...

  15. SANDIA REPORT

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

    semivolatile organic compound SWDA Safe Water Drinking Act SWMU Solid Waste Management Unit TA Technical Area TAG Tijeras Arroyo Groundwater (Investigation) TAL Target Analyte...

  16. Elastic-plastic analysis of the transition divertor joint for high performance divertor target plate

    E-Print Network [OSTI]

    Navaei, Dara

    2011-01-01T23:59:59.000Z

    Electron-beam welding Laser welding Furnace brazing RivetingBrazing is used between large Ta and W. Join subassemblies: Weld or TIG laser

  17. alcohols catalyst names: Topics by E-print Network

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

    here: Write your TA's name here Mathematics Websites Summary: ), alcohol, tobacco, firearms, explosives, a calculator, other students' tests, anything that has headphones 20 7...

  18. A study of the effect of feeding Albino rats with cottonseed meal to which various chemicals have been added during the cooking process

    E-Print Network [OSTI]

    Staffel, Eugene Otto

    1933-01-01T23:59:59.000Z

    of Ao4 ta4ahe eo4 Cteeth oooo etoeljee4, ~ gg )haffaaaaa, )aobjoeeaa, oo4 Naaoa, Rffeeg ef Xpe Ooletow oo4 Rjh aaagooetm Sieae ta Neaotej~ ga@~ of Noexjljca, g, yy? 4t~ (logo) ~ ggghotltog, Raoee~ eaag Oeoag, S~eo ea Oeletfjeaajaaa, 0'equi Itot...? ao e aetio ehjoh ~ loe 11 oeleteaa es4 high tia yhoeykaoyoge eeealbe4 tm a ~ ta ya~aeaae ta bely eejgha aog heol104~ sh@lltag, Ryooaaa& eo4 ogeaaa eheeeg aheo mgaeetoa ?olae ho4 a eyeejtte tohjbjacerg co%tea ?yeaa aha 4eyoejejaa of %he heaae...

  19. Characterization of Nanoporous WO3 Films Grown via Ballistic...

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

    on the preparation and characterization of high surface area, supported nanoporous tungsten oxide films prepared under different conditions on polished polycrystalline Ta and...

  20. Central Characterization Program (CCP), Acceptable Knowledge...

    Office of Environmental Management (EM)

    for Los Alamos National Laboratory, TA-55 Mixed Transuranic Waste Streams Central Characterization Program (CCP), Acceptable Knowledge Summary Report for Los Alamos National...

  1. Process for obtaining multiple sheet resistances for thin film hybrid microcircuit resistors

    DOE Patents [OSTI]

    Norwood, David P. (Albuquerque, NM)

    1989-01-01T23:59:59.000Z

    A standard thin film circuit containing Ta.sub.2 N (100 ohms/square) resirs is fabricated by depositing on a dielectric substrate successive layers of Ta.sub.2 N, Ti and Pd, with a gold layer to provide conductors. The addition of a few simple photoprocessing steps to the standeard TFN manufacturing process enables the formation of Ta.sub.2 N+Ti (10 ohms/square) and Ta.sub.2 N+Ti+Pd (1 ohm/square) resistors in the same otherwise standard thin film circuit structure.

  2. www.cis.upenn.edu/grad/embedded.shtml Did you know

    E-Print Network [OSTI]

    Plotkin, Joshua B.

    systems over the past decades ensuringn ppl x tyexi tw 00 has as many from 200+ d n e eal- a t ure re d ta

  3. Unstructured Fron-ers MCAM Inc

    E-Print Network [OSTI]

    Wang, Xiaorui "Ray"

    Controls § Patents ­ wriNen to obfuscate true meaning § Granted by diverse agencies #12;For Example ! M·CAM DOORSTM ! Brazil TCO ! Quan-ta-ve Model

  4. An investigation of the initial attachment and orientation of osteoblast-like cells on laser grooved Ti-6Al-4V surfaces

    E-Print Network [OSTI]

    Arnold, Craig B.

    for Energy Research, Obafemi Awolowo University, Ile-Ife, Nigeria a b s t r a c ta r t i c l e i n f o

  5. PowerPoint Presentation

    Energy Savers [EERE]

    TA Topics Quick Links * EPA Regulations * Ratepayer-Funded Energy Efficiency * Demand Response * Recovery Act Assistance * Uniform Methods Project Contacts Larry...

  6. CX-000571: Categorical Exclusion Determination | Department of...

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

    Categorical Exclusion Determination CX-000571: Categorical Exclusion Determination Photovoltaic Panel Installation (Building 833, TA-I) CX(s) Applied: B5.1 Date: 12102009...

  7. Neural bases of individual differences in beat perception Jessica A. Grahn a,

    E-Print Network [OSTI]

    Liu, Taosheng

    and Behavior, Department of Psychology, Bowling Green State University, Bowling Green, OH, USA a b s t r a c ta

  8. Los Alamos National Laboratory

    National Nuclear Security Administration (NNSA)

    for national defense and homeland security programs; and U.S. Department of Energy (DOE) waste management activities. The Plutonium Facility at Technical Area 55 (TA-55) is...

  9. WEATHERIZATION PROGRAM NOTICE 10-10: REPROGRAMMING TRAINING AND TECHNICAL ASSISTANCE FUNDS TO PROGRAM OPERATIONS

    Broader source: Energy.gov [DOE]

    Guidance to Weatherization Assistance Program Grantees when requesting to reprogram Training and Technical Assistance (T&TA) funds to the Program Operations line item.

  10. THE 3R ANTHRACITE CLEAN COAL TECHNOLOGY Economical Conversion of Browncoal to Anthracite Type Clean

    E-Print Network [OSTI]

    Edward Someus

    pac i ties. The 3R An thra cite Clean Coal end prod uct and tech nol ogy may ad van ta geously be in

  11. Japanese and English Contrastive Lexicology: The Role of Japanese "Mimetic Adverbs"

    E-Print Network [OSTI]

    Hirose, Masayoshi

    1981-01-01T23:59:59.000Z

    ta beggar to money Obj give-then half-dirty -Past hige -zuruWhen I gave some money to the beggar, his dirty bearded face

  12. 164 | VOL.2 NO.3 | MARCH 2005 | NATURE METHODS NEWS AND VIEWS

    E-Print Network [OSTI]

    Cai, Long

    ­820 (2002). 7. Kohout, T.A. & Lefkowitz, R.J. Mol. Pharmacol. 63, 9­18 (2003). 8. Sneddon, W.B. et al. J

  13. Supervising the Supervisors—Procedural Training and Supervision in Internal Medicine Residency

    E-Print Network [OSTI]

    Mourad, Michelle; Kohlwes, Jeffrey; Maselli, Judith; Auerbach, Andrew D.

    2010-01-01T23:59:59.000Z

    skills training in internal medicine residencies. A surveycomfort level in internal medicine trainees. J Gen InternTA, Powell DW. Internal medicine reformation. Am J Med. 21.

  14. Energy Conservation

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

    for LANL. Meeting renewable energy goals Original investors in renewable energy Low flow turbine used for electricity generation Abiquiu Dam power station Inside the TA-03 Steam...

  15. National Nuclear Security Administration

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

    and Related Structures within TA-3 at Los Alamos National Laboratory, Los Alamos, New Mexico U. S. Department of Energy National Nuclear Security Administration Los Alamos Area...

  16. PRELIMINARY Run Shutdown BL Commissioning

    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 for RenewableSpeedingBiomassPPPO Website Directory PPPO Website

  17. Effect of time of cutting on yield and botanical composition of prairie hay in southeastern Nebraska

    E-Print Network [OSTI]

    Conard, Elverne Clyde

    1953-01-01T23:59:59.000Z

    u al CV rH O rH . . -Ta CG -bl in ~Ta m lb e . ON O 02 1 3 8 .7 6 8 .7 3 nO 02 O O ? ?

  18. Siting study for a consolidated waste capability at Los Alamos National Laboratory

    SciTech Connect (OSTI)

    Booth, Steven Richard [Los Alamos National Laboratory

    2010-11-05T23:59:59.000Z

    Decision analysis was used to rank alternative sites for a potential Consolidated Waste Capability (CWC) to replace current hazardous solid waste operations (hazardous/chemical, mixed low-level, transuranic, and low-level waste) at Los Alamos National Laboratory's Technical Area (TA)-54. An original list of 21 site alternatives was pre-screened to seven sites that were assessed using the analytical hierarchy process with five top-level criteria and fifteen sub-criteria. The top site choice is TA-63/52/46; the second choice is TA-18/36. The seven sites are as follows. TA-18/36 (62 acres) is located on Potrillo Drive that intersects Pajarito Road at the bottom of a steep grade. It has some blast zone issues on its southwest side and some important archeological sites on the southeast section. TA-60 (50 acres) is located at the end of Eniwetok Road off Diamond Drive, east of TA-3. Most of the site is within a fifty foot-deep ravine (that may have contamination in the drainage), with a small section on the mesa above. TA-63/52/46 (110 acres) lies to the north of Pajarito Road along Puye Road. It is centrally located in a brown field industrial area, with good access to generators on a controlled road. TA-46 (22 acres) is a narrow site on the south side of Pajarito Road across from TA-46 office buildings. TA-48 (14 acres) is also narrow, and is located on the north side of Pajarito Road near the west vehicle access portal (VAP). TA-51 (19 acres) is located on the south side of Pajarito Road at the top of the hill above TA-18 near the current entrance to the TA-54. TA-54 West (16 acres) is just north of the entrance to TA-54 at Pajarito Road and is close to Zone 4. Although it is near the San Ildefonso Pueblo property line, there may be adequate set-back for sight screening.

  19. Resilience in Pre-Columbian Caribbean House-Building: Dialogue Between Archaeology and Humanitarian Shelter

    E-Print Network [OSTI]

    Samson, A. V. M.; Crawford, C. A.; Hoogland, M. L. P.; Hofman, C. L.

    2015-04-23T23:59:59.000Z

    . This paper suggests that exam- ination of patterns in the regional archaeological record may reveal some useful implications for dealing with post-disaster shelter relief in the Caribbean and further afield. The archaeological analysis offered here identifies... es fo rh ou se s, an d ot he rw is e si te da te s. O nl y th e m os tr el ia bl e/ co m pl et e of th es e st ru ct ur es ha ve be en us ed in an al ys is an d w he re m ul tip le in te rp re ta tio ns ha ve be en pr es en te d th e m os ts ec ur e...

  20. Volumes of liquid hydrocarbons at high temperatures and pressures

    E-Print Network [OSTI]

    Alani, Ghalib H.

    1959-01-01T23:59:59.000Z

    ' 3 3 O ' vO ?s co CO'v a o o O ' t*- r -a ??-t O ' O ' O ' 0000 O ' O ' o O ' O ' SO ra O ' ?*4 ?H rsi o O ' rsl CO m CO in O ' CO ? ? ? ? ? ? ? *-4 ?*-1 ?-4 H INJ CM ooO' o PsJ m rti in vO CO oo *oo m m oo 00 in 00 vO a a O '00 f... (X M h d fl) ? ? ^? ? & S X O, 1 1 1 1 1 .H d d d d d g i d R oo CO Au Au u <8 i i ? aCO Ko 3 CT4 W d lH PsJ + 0, H TA BL E II...

  1. Computer Science Department Technical Report

    E-Print Network [OSTI]

    Shahriar, Selim

    Architecture for Supporting Education Sven E. Kuehne Kenneth D. Forbus Abstract Resources in education of this paper originally appeared as: Forbus, Kenneth D. & Kuehne, Sven E. (1998). RoboTA: An Agent Colony. 455-456. 2 #12;RoboTA: An Agent Colony Architecture for Supporting Education Sven E. Kuehne Kenneth D

  2. Wilberd van der Kallen e.a. Dat is goede wiskunde! NAW 5/13 nr. 4 december 2012 235 Wilberd van der Kallen

    E-Print Network [OSTI]

    Kallen, Wilberd

    der Kallen Mathematisch Instituut Universiteit Utrecht Postbus 80.010 3508 TA Utrecht w.vanderkallen@uu.nl Eduard Looijenga Mathematisch Instituut Universiteit Utrecht Postbus 80.010 3508 TA Utrecht e Leiden murre@math.leidenuniv.nl Jan R. Strooker Mathematisch Instituut Universiteit Utrecht Postbus 80

  3. Geophys. J. Int. (2007) 170, 545555 doi: 10.1111/j.1365-246X.2007.03410.x GJIGeomagnetism,rockmagnetismandpalaeomagnetism

    E-Print Network [OSTI]

    Utrecht, Universiteit

    Hoofddijk', Utrecht University, Budapestlaan 17, 3584 CD Utrecht, The Netherlands 3Department of Earth Sciences, Utrecht University, PO Box 80021, 3508 TA Utrecht, The Netherlands 4Mineralogisches Institut and Geosciences, Geological Survey of the Netherlands, PO BOX 80015, TA Utrecht, The Netherlands Accepted 2007

  4. Publication 424-031 Revised 2003

    E-Print Network [OSTI]

    Liskiewicz, Maciej

    MINNEAPOLIS MN 55440 T.A. SEEDS T.A. SEEDS PO BOX 300 AVIS PA 17721 VIRGINIA CORN HYBRID TRIALS IN 2003Publication 424-031 Revised 2003 #12;Virginia Cooperative Extension programs and employment of Cooperative Extension work, Virginia Polytechnic Institute and State University, Virginia State University

  5. National Aeronautics and Space Administration In-Space propulSIon SyStemS roadmap

    E-Print Network [OSTI]

    Waliser, Duane E.

    National Aeronautics and Space Administration In-Space propulSIon SyStemS roadmap Technology Area Missions TA02-24 Acknowledgements TA02-24 #12;Foreword NASA's integrated technology roadmap, including both Roadmap, an integrated set of fourteen technology area roadmaps, recommending the overall technology

  6. The Mixed Layer over the Antarctic Continental Shelf 1. Centre for Polar Observation and Modelling, Pearson Building, Gower Street, London, WC1E 6BT

    E-Print Network [OSTI]

    References Continental Shelf cold-saline water strong katabatic winds brine exclusion multi-year pack ice ice-shelf dmix Antarctic bottom water sea ice a) b) Weddell Ross Amundsen Bellinghausen Solar heating) hi TS-lead Ta Tmix Ta TS-ice Tmix (1-i )Ii (0)Fsw (1-i )Ii (0)e-hi Fsw E Entrainment is calculated

  7. CX-004729: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Bio-Response Operational Testing and Evaluation (BOTE) Project (TA-I, TA-III, and Offsite at Idaho National Laboratory)CX(s) Applied: B3.12Date: 10/12/2010Location(s): IdahoOffice(s): Sandia Site Office

  8. Publications Materials Science and Engineering Laboratory

    E-Print Network [OSTI]

    -destructive measure- ment scheme to actively monitor hydrogen content in steel pipelines, Proc. QNDE 2007, AIP for hydrogen pipelines, NIST IR 6649 (2007) Siewert TA, Smith R, Merritt J, Advanced welding and joiningColskey JD, Siewert TA, Crack tip opening angle optical measurement methods in five pipeline steels, Engi

  9. Vi sker projektledare till frstudie Fisketurism i Sjuhrad Under sommaren ska Leader Sjuhrad genomfra en frstudie fr att ge underlag till

    E-Print Network [OSTI]

    Uppsala Universitet

    Sjuhärad genomföra en förstudie för att ge underlag till ett eventuellt projekt för utveckling av fisketurism i Sjuhärad. Förstudien ska genom inventering och analyser ta fram en bild av nuläge och ge förslag inventering och analyser ta fram en bild av nuläge och ge förslag till beskrivning och finansiering av ett

  10. Office of Admissions in conjunction with Committee on Educational Policy and academic departments Page 1 Advanced Placement Exams (AP) and International Baccalaureate Higher Level Exams (IBH) 2013-2014

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    _____________ Spanish 3,4,5 _____ 3,4,5 _____ 3,4,5 8 _____ 8 _____ 8 Each Language exam may be taken for credit. AP. AP Literature French _____________ Spanish 3,4,5 _____ 3,4,5 8 _____ 8 TA ______ TA Each Literature

  11. Comparison of Social Stories and Teaching Interaction Procedures for Teaching Social Skills to Children and Adolescents With a Pervasive Developmental Disorder

    E-Print Network [OSTI]

    Leaf, Justin Barrett

    2010-09-01T23:59:59.000Z

    dednemmocer detnirp saw ecnetnes eno :tamrof koob a ni saw yrots ehT .ecafdlob tnof tniop 22 namoR weN semiT ni ,dengila retnec ,egap hcae fo mottob eht ta pilc tnaveler a decalp rehcraeser - thgir )gnilims taC eht xileF ,.g.e( erutcip nootrac ro erutcip...

  12. PREVIOUS NAME NEW NAME Ambrosiella Ambrosiella Brader ex Arx & Hennebert

    E-Print Network [OSTI]

    (part 1) Endoconidiophora Münch C. coerulescens complex (part 2) Davidsoniella Z.W. de Beer, T.A. Duong & M.J. Wingf. C. moniliformis complex Huntiella Z.W. de Beer, T.A. Duong & M.J. Wingf. C. paradoxa' Chalaropsis Peyronel PREVIOUS NAME NEW NAME Ambrosiella beaveri Ambrosiella beaveri Six, Z.W. de Beer & W

  13. DOE/EIS-0287 Idaho High-Level Waste & Facilities Disposition...

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

    e S B W s t o rage in Ta n k F a r m S B W s t o rage in Ta n k F a r m Idaho HLW & FD EIS 4-17 DOEEIS-0287D The genus is collected for food, medicine, and dye. This onion is...

  14. Interface and Size Effects on TiN-based Nanostructured Thin Films 

    E-Print Network [OSTI]

    Kim, Ickchan

    2012-07-16T23:59:59.000Z

    reactors. In order to enhance the material property, superlattices is one of artificially engineered protective coatings, such as AlN/TiN and TaN/TiN multilayered films. Epitaxial cubic multilayer films, TaN/TiN and AlN/TiN nanolayers were grown on Si(001...

  15. Image distortion in thermoacoustic tomography caused by microwave diffraction Changhui Li,* Manojit Pramanik,

    E-Print Network [OSTI]

    Wang, Lihong

    Image distortion in thermoacoustic tomography caused by microwave diffraction Changhui Li,* Manojit-induced thermoacoustic tomography. The distortion, due to microwave diffraction in the object to be imaged, leads Thermoacoustic TA tomography TAT in biological tis- sue reconstructs the TA source distribution from the acoustic

  16. Entomology 489 Field Entomology

    E-Print Network [OSTI]

    Behmer, Spencer T.

    of Elmer's glue 1 pinning block 1 eye dropper 1 fine-tipped paint brush 2 small plastic squeeze bottles/Instructor _____) Prepared Received Returned TA/Inst # Student TA/Inst _____ 1 plastic tackle box Equipment Organization __ /__ 2 plastic tackle box organizers _____ 1 insect aerial or sweep net Collecting Equipment _____ 1

  17. An approach to the teaching of Korean particles based on case grammar

    E-Print Network [OSTI]

    Kang, Joo Ok

    1975-01-01T23:59:59.000Z

    in the following sentences: f. John-i sakwa-lil mek-ess-ta. s. p. apple o. p. eat past Stat 'John ate an apples ' g, John-in sakwa-ill orpe mek-ess-ta. eat 'John ate an apples ' Chomskyan analysis might argue that in of sentence (g) has the same...

  18. The Klingon Language Version of the World English Bible: Psalms 

    E-Print Network [OSTI]

    Anderson, Joel (translator)

    , 'Iv Sornav je ta'taH ghobe' wither. Whatever ghaH ta'taH DIchDaq chep. 1:4 The mIgh 'oH ghobe' vaj, 'ach 'oH rur the yub nuq the SuS drives DoH. 1:5 vaj the mIgh DIchDaq ghobe' Qam Daq the yoj, ghobe' yemwI'pu' Daq the tay' ghotpu' vo' the Qa...Ipu' tlhap qeS tay', Daq joH'a', j e Daq Daj ngoHta', { Note: The mu' ngoHta' ghaH the rap as the mu' vaD Messiah joq Christ } ja'ta', 2:3 Let's ghor chaj bonds mob, je chuH chaj cords vo' maH. 2:4 ghaH 'Iv sits Daq the chal DIchDaq laugh. The joH DIch...

  19. Making the grade in Florida I N C R E A S I N G A C C E S S T O D E N TA L C A R E F O R F L O R I D A ' S M O S T V U L N E R A B L E C I T I Z E N S

    E-Print Network [OSTI]

    Dixon, Warren

    incentives to attract dentists to safety net clinics, and allowing expanded duties and reduced supervision" issues, but expanding it, particularly by enrolling students in a very expensive academic program expanding public health education and prevention services, improving the Medicaid dental program, using

  20. A D VA N C E M E N T O F T H E PRACTICEA D VA N C E M E N T O F T H E PRACTICE D I R E C T F R O M C D C E N V I R O N M E N TA L H E A LT H S E R V I C E S B R A N C H

    E-Print Network [OSTI]

    on ventilation); Water supply interruption can be caused by supply line. · heating, ventilation, and air