Sample records for ta sys tem

  1. AFTER A Framework for electrical power sysTems vulnerability...

    Open Energy Info (EERE)

    sysTems vulnerability identification, dEfense and Restoration (Smart Grid Project) (Germany) Jump to: navigation, search Project Name AFTER A Framework for electrical power...

  2. AFTER A Framework for electrical power sysTems vulnerability...

    Open Energy Info (EERE)

    United Kingdom) Jump to: navigation, search Project Name AFTER A Framework for electrical power sysTems vulnerability identification, dEfense and Restoration Country United Kingdom...

  3. AFTER A Framework for electrical power sysTems vulnerability...

    Open Energy Info (EERE)

    AFTER A Framework for electrical power sysTems vulnerability identification, dEfense and Restoration (Smart Grid Project) (Norway) Jump to: navigation, search Project Name AFTER A...

  4. AFTER A Framework for electrical power sysTems vulnerability...

    Open Energy Info (EERE)

    Ireland) Jump to: navigation, search Project Name AFTER A Framework for electrical power sysTems vulnerability identification, dEfense and Restoration Country Ireland Coordinates...

  5. AFTER A Framework for electrical power sysTems vulnerability...

    Open Energy Info (EERE)

    Belgium) Jump to: navigation, search Project Name AFTER A Framework for electrical power sysTems vulnerability identification, dEfense and Restoration Country Belgium Coordinates...

  6. AFTER A Framework for electrical power sysTems vulnerability...

    Open Energy Info (EERE)

    Czech Republic) Jump to: navigation, search Project Name AFTER A Framework for electrical power sysTems vulnerability identification, dEfense and Restoration Country Czech Republic...

  7. A critical concern for embedded sys tems is the need to deliver high levels of per

    E-Print Network [OSTI]

    Mudge, Trevor

    10 A critical concern for embedded sys­ tems is the need to deliver high levels of per­ formance voltage. Because dynam­ ic energy scales quadratically with supply volt­ age, DVS can significantly reduce energy use. 2 Enabling systems to run at multiple fre­ quency and voltage levels is challenging

  8. A critical concern for embedded sys-tems is the need to deliver high levels of per-

    E-Print Network [OSTI]

    Mudge, Trevor

    10 A critical concern for embedded sys- tems is the need to deliver high levels of per- formance proces- sor utilization and allows a corresponding reduction in supply voltage. Because dynam- ic energy scales quadratically with supply volt- age, DVS can significantly reduce energy use.2 Enabling systems

  9. AFTER A Framework for electrical power sysTems vulnerability...

    Open Energy Info (EERE)

    Retrieved from "http:en.openei.orgwindex.php?titleAFTERAFrameworkforelectricalpowersysTemsvulnerabilityidentification,dEfenseandRestoration(SmartGridProject)&o...

  10. AFTER A Framework for electrical power sysTems vulnerability...

    Open Energy Info (EERE)

    Retrieved from "http:en.openei.orgwindex.php?titleAFTERAFrameworkforelectricalpowersysTemsvulnerabilityidentification,dEfenseandRestoration(SmartGridProject)(...

  11. AFTER A Framework for electrical power sysTems vulnerability

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof Energy 2,AUDITCaliforniaWeifangwiki Home Jweers's APTAPFinal

  12. AFTER A Framework for electrical power sysTems vulnerability

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof Energy 2,AUDITCaliforniaWeifangwiki Home Jweers's APTAPFinalidentification, dEfense

  13. AFTER A Framework for electrical power sysTems vulnerability

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-fTriWildcat 1 WindtheEnergySulfonate asAEE Solar Jump

  14. AFTER A Framework for electrical power sysTems vulnerability

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-fTriWildcat 1 WindtheEnergySulfonate asAEE Solar Jumpidentification, dEfense

  15. AFTER A Framework for electrical power sysTems vulnerability

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-fTriWildcat 1 WindtheEnergySulfonate asAEE Solar Jumpidentification,

  16. AFTER A Framework for electrical power sysTems vulnerability

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-fTriWildcat 1 WindtheEnergySulfonate asAEE Solar

  17. AFTER A Framework for electrical power sysTems vulnerability

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-fTriWildcat 1 WindtheEnergySulfonate asAEE Solaridentification, dEfense and

  18. AFTER A Framework for electrical power sysTems vulnerability

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-fTriWildcat 1 WindtheEnergySulfonate asAEE Solaridentification, dEfense

  19. Abstract -The paper explores applications of the finitely adapt-able robust linear programming (LP) to deregulated power sys-

    E-Print Network [OSTI]

    Stankoviæ, Aleksandar

    (LP) to deregulated power sys- tems using the example of Locational Marginal Prices (LMPs, Power system economics, Power system security, Uncertainty, Locational Marginal Prices. I. INTRODUCTION

  20. 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

  1. Soft computing--genetic algo-rithms, fuzzy sets, chaos theory, expert sys-

    E-Print Network [OSTI]

    Ramat, Stefano

    20 Soft computing--genetic algo- rithms, fuzzy sets, chaos theory, expert sys- tems, and artificial is an optimization problem that an analytical approach usually cannot solve. An MLP network can model the unknown, recognition, and control. We have implemented these ANNs on either workstations or architectures

  2. 46 AI MAGAZINE ith the advance of automation and infotainment sys-

    E-Print Network [OSTI]

    Kraus, Sarit

    Articles 46 AI MAGAZINE W ith the advance of automation and infotainment sys- tems in vehicles and their vehicles. Classically, these users were considered the supervisors of the automated systems running in the cars. In the last decade, we have seen progress toward more autonomous driving automation, including

  3. AeroSys: Test Notice (2009) | Department of Energy

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

    Test Notice (2009) AeroSys: Test Notice (2009) September 24, 2009 After examining AeroSys data, DOE concluded that the AeroSys data were insufficient to confirm whether Aerosys...

  4. Society's dependence on information sys-tems has made cybersecurity an increas-

    E-Print Network [OSTI]

    Erbacher, Robert F.

    issue. Computer networks transport financial transactions, sensitive government informa- tion, power plant operations, and personal health infor- mation. The spread of malicious network activities poses- cerned with script kiddies or unso- phisticated vulnerability exploits becauseintrusiondetectionsystems

  5. structure. Integrating sustainable energy sys-tems into the infrastructure would allow rapid

    E-Print Network [OSTI]

    Deutch, John

    needed for hydrogen-powered fuel cell vehicles, we will assume a vehicle fuel economy of 60 miles per kg N T Hybrid Cars Now, Fuel Cell Cars L of electrical energy, reduce environmental emissions, and provide a transportation fuel. This goal is clearly

  6. IBM introduced Power4-based sys-tems in 2001.1

    E-Print Network [OSTI]

    Silvano, Cristina

    . It is not unusual to see average exe- cution unit utilization rates of approximately 25 percent across a broad

  7. G. J. Lee, G. T. Heydt, "An interactive -dynamic mechanism conceptualizing the cost and benefit of electric power quality," Journal of Electric Power Components and Sys-

    E-Print Network [OSTI]

    in the proposed infrastructure. 1. Introduction With the deregulation of the electric power energy market of electric power quality," Journal of Electric Power Components and Sys- tems, accepted for publication, 2003. #12;An Interactive - Dynamic Mechanism Conceptualizing the Cost and Benefit of Electric Power Quality

  8. SysBioMed Canary Islands Cancer Research

    E-Print Network [OSTI]

    Timmer, Jens

    SysBioMed Canary Islands Cancer Research Institute Winter School on Systems Biology for Medical Applications 27th February ­ 2nd March 2007 Puerto de la Cruz, Tenerife (Canary Islands) Supported by the European Commission (FP6 projects COSBICS and SysBioMed) and the Canary Islands Institute for Cancer

  9. Managing Information Flow between SysML and Modelica

    E-Print Network [OSTI]

    Managing Information Flow between SysML and Modelica A Model-Based Design Project for ME6101ML and Modelica languages. Once I apply the method, I discuss the utility, limitations, and necessary future work

  10. AeroSys: Order (2011-SCE-1624) | Department of Energy

    Office of Environmental Management (EM)

    civil penalty after finding AeroSys had (1) failed to certify that certain models of space-constrained central air conditioners and air conditioning heat pumps comply with the...

  11. AeroSys: Proposed Penalty (2010-CE-01/0201)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that AeroSys, Inc. failed to certify residential central air conditioners and air conditioning heat pumps as compliant with the applicable energy conservation standards.

  12. AeroSys: Noncompliance Determination (2010-SE-0302)

    Broader source: Energy.gov [DOE]

    DOE issued a Notice of Noncompliance Determination to AeroSys, Inc. finding that basic models THHP-24T* and THDC-30T* do not comport with the energy conservation standards.

  13. The technology of the rover and its landing sys-tem is designed to demonstrate substantial new

    E-Print Network [OSTI]

    a large robot arm, a laser, a weather station, and a drill, the Mars Science Laboratory's jeep-sized rover

  14. SR_SRNS_Proc_Cycle_Sys.pdf | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn'tOrigin ofEnergy atLLC - FE DKT. 10-160-LNG - ORDER 2913||Sys.pdf SR_SRNS_Proc_Cycle_Sys.pdf

  15. 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.

  16. Extending SysML for Integration with Solver-based

    E-Print Network [OSTI]

    Shapiro, Benjamin

    by integrated models of: Model-based Systems Engineering Requirements Accelerate at of 4 m/s2 100 kw hydraulic;Overview § Motivation and approach § Dynamic simulation overview § SysML extension § Detailed example § Transforming to simulation formats § Summary #12;Overview § Motivation and approach § Dynamic simulation

  17. Integrating Models and Simulations of Continuous Dynamics into SysML

    E-Print Network [OSTI]

    In this paper, we combine modeling constructs from SysML and Modelica to improve the support for Model, structures, functions, and behaviors. Complementing these SysML constructs, the Modelica language has emerged and the corresponding Modelica models; and the integration of simulation experiments with other SysML constructs

  18. Property:Incentive/EligSysSize | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I Geothermal PwerPerkins County, Nebraska:PrecourtOid JumpEligSysSize Jump to: navigation, search Property

  19. AeroSys: Order (2010-CE-01/0201 and 2010-SE-0302)

    Broader source: Energy.gov [DOE]

    DOE ordered AeroSys, Inc. to pay a $25,000 civil penalty after finding AeroSys had manufactured and distributed in commerce in the U.S. various models of air conditioners and air conditioning heat pumps that did not comport with the applicable energy conservation standards. In addition, AeroSys had distributed air conditioners and air conditioning heat pumps without submitting the required certification reports.

  20. DOE Orders AeroSys to Halt Distribution of Inefficient Air Conditioner...

    Energy Savers [EERE]

    Action Against AeroSys, Inc. for Failure to Certify Air Conditioners and Heat Pumps Four Central Air Conditioners Determined Noncompliant With Energy Efficiency Standard...

  1. DOE Institutes Enforcement Action Against AeroSys, Inc. for Failure...

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

    DOE Orders AeroSys to Halt Distribution of Inefficient Air Conditioner and Heat Pump Models Four Central Air Conditioners Determined Noncompliant With Energy Efficiency Standard...

  2. Department of Energy Announces Testing for AeroSys, Inc. Products...

    Office of Environmental Management (EM)

    Inc. DOE Orders AeroSys to Halt Distribution of Inefficient Air Conditioner and Heat Pump Models Shown to Violate Minimum Efficiency Standards DOE Institutes Enforcement...

  3. Mapping SysML to Modelica to Validate Wireless Sensor Networks Non-Functional Requirements

    E-Print Network [OSTI]

    Boyer, Edmond

    Mapping SysML to Modelica to Validate Wireless Sensor Networks Non-Functional Requirements SamirML) and the Modelica language which promote the reusability and improve the development process. In this work, we elements in Modelica. Thanks to the SysML requirement diagram which is transformed into Modelica properties

  4. 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.

  5. In Situ TEM Investigation of Congruent Phase Transition and Structural...

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

    In Situ TEM Investigation of Congruent Phase Transition and Structural Evolution of Nanostructured SiliconCarbon Anode for In Situ TEM Investigation of Congruent Phase Transition...

  6. Company Name: RoviSys Web Site: www.rovisys.com

    E-Print Network [OSTI]

    New Hampshire, University of

    , Glass, Oil & Gas, Power & Energy markets. RoviSys helps clients develop and implement custom process, and write PLC code, Visual Basic, or C++ programs to solve a variety of real world problems. Returning co

  7. AeroSys: Noncompliance Determination (2010-CE-01/0201 and 2010-SE-0302)

    Broader source: Energy.gov [DOE]

    DOE issued a Notice of Noncompliance Determination to AeroSys, Inc. finding that basic models THDC-18S, THDC-18T, THDC-24S, and THDC-24T do not comport with the energy conservation standards.

  8. 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...

  9. 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 VTa 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 VTa 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.

  10. Motorized manipulator for positioning a TEM specimen

    DOE Patents [OSTI]

    Schmid, Andreas Karl (Berkeley, CA); Andresen, Nord (Berkeley, CA)

    2010-12-14T23:59:59.000Z

    The invention relates to a motorized manipulator for positioning a TEM specimen holder with sub-micron resolution parallel to a y-z plane and rotating the specimen holder in the y-z plane, the manipulator comprising a base (2), and attachment means (30) for attaching the specimen holder to the manipulator, characterized in that the manipulator further comprises at least three nano-actuators (3.sup.a, 3.sup.b, 3.sup.c) mounted on the base, each nano-actuator showing a tip (4.sup.a, 4.sup.b, 4.sup.c), the at least three tips defining the y-z plane, each tip capable of moving with respect to the base in the y-z plane; a platform (5) in contact with the tips of the nano-actuators; and clamping means (6) for pressing the platform against the tips of the nano-actuators; as a result of which the nano-actuators can rotate the platform with respect to the base in the y-z plane and translate the platform parallel to the y-z plane.

  11. Process for selecting engineering tools : applied to selecting a SysML tool.

    SciTech Connect (OSTI)

    De Spain, Mark J.; Post, Debra S. (Sandia National Laboratories, Livermore, CA); Taylor, Jeffrey L.; De Jong, Kent

    2011-02-01T23:59:59.000Z

    Process for Selecting Engineering Tools outlines the process and tools used to select a SysML (Systems Modeling Language) tool. The process is general in nature and users could use the process to select most engineering tools and software applications.

  12. 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.

  13. 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

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

  15. TEM-Untersuchungen an GaN basierten Halbleiterheterostrukturen fur

    E-Print Network [OSTI]

    Schubart, Christoph

    TEM-Untersuchungen an GaN basierten Halbleiterheterostrukturen fur optoelektronische Anwendungen . . . . . . . . . . . . . . . . . . . . . . . . . . . 71 5.1.2 Versetzungen bei Homoapitaxie auf GaN-Substraten . . . . 79 5.2 Versetzungsreduktion durch

  16. 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.

  17. SR_SRNS_Proc_Cycle_Sys1.pdf | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn'tOrigin ofEnergy atLLC - FE DKT. 10-160-LNG - ORDER 2913||Sys.pdf

  18. 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...

  19. GEOBULLETIN SEpTEmBEr 16Th, 2011

    E-Print Network [OSTI]

    Sheridan, Jennifer

    ------------------------------------------------------------------- 3B Friday, Sept 16, 2011: Gary Weissmann, Univ. of New Mexico (Host: Chris Gellasch) #12;GEOBULLETIN SEpTEmBEr 16Th, 2011 - 2 - WEEkS LEcTUrE Dr. Gary Weissmann Univ. of New Mexico Friday, Sep 16th of interconnectivity between high and low conductivity units on the shape of contaminant plumes and breakthrough times

  20. Ultra-short-pulsed and highly-efficient diode-pumped Yb:SYS mode-locked oscillators

    E-Print Network [OSTI]

    Boyer, Edmond

    "Laser crystals for the production of ultra-short laser pulses," Ann. Chim. Mat. 28, 47-72 (2003). 3. CUltra-short-pulsed and highly-efficient diode- pumped Yb:SYS mode-locked oscillators Frdric Druon) 1 69 35 88 07, frederic.druon@iota.u-psud.fr http://www.elsa-laser.com Abstract: We report

  1. 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.

  2. 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.

  3. 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

  4. 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

  5. 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...

  6. Analyzing the thickness of a TEM sample using EELSAnalyzing the thickness of a TEM sample using EELS and integration techniquesand integration techniques

    E-Print Network [OSTI]

    Petta, Jason

    EELS and integration techniquesand integration techniques Antonio Buddington Imaging and Analysis film sample? Analyzing the thickness of a TEM sample using EELS and integration techniques #12;Method Analyzing the thickness of a TEM sample using EELS and integration techniques Specimen examined under

  7. 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

  8. 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.

  9. 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.

  10. Three dimensional reconstruction of aerogels from TEM images Florence Despetis1,2

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Three dimensional reconstruction of aerogels from TEM images Florence Despetis1,2 ,Nadjette to compute their physical properties. We focus here on base catalyzed and colloidal silica aerogels, which are fractal materials and we use an original method for the reconstruction of these aerogels from TEM images

  11. Automation for Cryo-TEM: From Specimen Grid to 3D

    E-Print Network [OSTI]

    Automation for Cryo-TEM: From Specimen Grid to 3D Map B. Carragher, D. Fellmann, N. Kisseberth, R://www.itg.uiuc.edu #12;AUTOMATION FOR CRYO-TEM: FROM SPECIMEN GRID TO 3D MAP B. Carragher, D. Fellmann, N. Kisseberth, R map of a macromolecular structure automatically and within hours of inserting a specimen

  12. 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.

  13. 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.

  14. 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

  15. 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...

  16. 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.

  17. 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

  18. 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

  19. Thermal Analysis of SRF Cavity Couplers Using Parallel Multiphysics Tool TEM3P

    SciTech Connect (OSTI)

    Akcelik, V, Lee, L.-Q., Li, Z., Ng, C.-K., Ko, K.,Cheng, G., Rimmer, R., Wang, H.

    2009-05-01T23:59:59.000Z

    SLAC has developed a multi-physics simulation code TEM3P for simulating integrated effects of electromagnetic, thermal and structural loads. TEM3P shares the same software infrastructure with SLACs paralell finite element electromagnetic codes, thus enabling all physics simulations within a single framework. The finite-element approach allows high fidelity, high-accuracy simulations and the parallel implementation facilitates large-scale computation with fast turnaround times. In this paper, TEM3P is used to analyze thermal loading at coupler end of the JLAB SRF cavity.

  20. Thermal Analysis of SRF Cavity Couplers Using Parallel Multiphysics Tool TEM3P

    SciTech Connect (OSTI)

    Akcelik, V; Lee, L.-Q.; Li, Z.; Ng, C.-K.; Ko, K.; /SLAC; Cheng, G.; Rimmer, R.; Wang, H.; /Jefferson Lab

    2009-05-20T23:59:59.000Z

    SLAC has developed a multi-physics simulation code TEM3P for simulating integrated effects of electromagnetic, thermal and structural loads. TEM3P shares the same software infrastructure with SLAC's parallel finite element electromagnetic codes, thus enabling all physics simulations within a single framework. The finite-element approach allows high-fidelity, high-accuracy simulations and the parallel implementation facilitates large-scale computation with fast turnaround times. In this paper, TEM3P is used to analyze thermal loading at coupler end of the JLAB SRF cavity.

  1. 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.

  2. 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.

  3. 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.

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

    E-Print Network [OSTI]

    Y. Ayyad; J. Benlliure; E. Casarejos; H. lvarez-Pol; A. Bacquias; A. Boudard; M. Caamao; T. Enqvist; V. Fhr; A. Keli?-Heil; K. Kezzar; S. Leray; C. Paradela; D. Prez-Loureiro; R. Pleska?; D. Tarro

    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.

  5. Inversion of TEM sounding data using the steepest descent and the conjugate gradients methods

    E-Print Network [OSTI]

    Alsabti, Abdallah S

    2001-01-01T23:59:59.000Z

    In this study, the inversion of TEM sounding is investigated. I solved the over-determined and the under-determined inversion problems using the steepest descent and the conjugate gradients methods. The study depends on results from the inversion...

  6. Effects of Fresnel fringes on TEM images of interfaces in X-ray multil ayers

    E-Print Network [OSTI]

    Nguyen, Tai D.; O'Keefe, Michael A.; Kilaas, Roar; Gronsky, Ronald; Kortright, Jeffrey B.

    1992-01-01T23:59:59.000Z

    and J.B. Kortright, Fresnel Fringe Effects at Interfaces ofand T.F. Page, A TEM Fresnel Diffraction-Based Method forW/Si Multilayers Using The Fresnel Method, Ultramicroscopy

  7. Modular Coil Sys Requirements

    E-Print Network [OSTI]

    Princeton Plasma Physics Laboratory

    CALCTBD Leads EM/Struct Analysis CALCTBD Mod Coil Interface Welded Joint CALC1400500 NCSX Magnet Fault Tube Block Clamp Asm SE140030R0 Clamp Block SE140027R0 Jumpers Base Block SE142C047R1 Jumpers Ins Sheet Conductor Cable Connect SE142C059R2 Insul Sheet Detail SE142C211R1 Insulating Spacer SE142C212R1 Lead Block

  8. FileSys.pptx

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField8,Dist.New Mexico Feb.Information 9 Default Caption

  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, rjan; Wtjen, Jrn Timo; Norstrm, Hans; Olsson, Jrgen; Zhang, Shi-Li, E-mail: shili.zhang@angstrom.uu.se [Solid State Electronics, The ngstrm 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. 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.

  13. 2. The TEM and its Optics 2.1 Introduction to the Transmission Electron

    E-Print Network [OSTI]

    -loss spectrometry (EELS), energy losses of the electrons are measured after the high-energy electrons have traversed, the high-energy electrons in TEM cause electronic excitations of the atoms in the specimen. Two important spectroscopic techniques make use of these excitations. · In energy-dispersive x-ray spectrometry (EDS), an x

  14. QUANTITATIVE STUDY OF THE CHANGES PR.ODUCED BY ACCLIMATIZATION IN THE TOLERANCE OF HIGH TEM-

    E-Print Network [OSTI]

    at high temperatures _ Discussion _ 178 Summary _ Bibliography _ Page 181 185 187 190 190 INTRODUCTION in hot springs at tem- peratures of 85° and 98° C., when closely allied species in the waters of the same the tolerance of toad tadpoles by raising the temperature of the surrounding water at the rate of about 25° C

  15. 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

  16. TEM and HRXRD Analysis of LP MOVPE Grown InGaP/GaAs epilayers

    SciTech Connect (OSTI)

    Pelosi, Claudio; Bosi, Matteo; Attolini, Giovanni; Germini, Fabrizio; Frigeri, Cesare [CNR-IMEM Institute, Parco Area delle Scienze 37a, Loc Fontanini 43010 Parma (Italy); Prutskij, Tatiana [Instituto de Ciencias, BUAP, Privada 17 Norte, no. 3417, colSanMiguel Hueyotlipan, 72050 Puebla, Pue. (Mexico)

    2007-04-10T23:59:59.000Z

    The diffusion phenomena at interfaces between GaAs/InGaP layers grown by low pressure MOVPE have been studied by dark field (DF) transmission Electron Microscopy (TEM) and High resolution X-ray Diffractometry (HRXRD). By comparing the results of the two techniques a mismatched layer containing P or P and In has been evidenced. The causes of this behavior are briefly discussed.

  17. 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.

  18. Carbyne contamination in carbon-coated TEM microgrids made from vacuum-resistive heating deposition from a graphite rod

    SciTech Connect (OSTI)

    Li Hanying; Sun Jingzhi; Wang Youwen; Chen Hongzheng; Cao Jian; Wang Mang

    2004-03-15T23:59:59.000Z

    Carbyne contamination was found to exist on the as-prepared carbon-coated transmission electron microscope (TEM) microgrids made by the method of vacuum-resistive heating deposition from a graphite rod. It is a source to bring mistaken and confusing information to the samples being studied by TEM.

  19. In situ TEM observation of two-step martensitic transformation in aged NiTi shape memory alloy

    E-Print Network [OSTI]

    Crone, Wendy C.

    In situ TEM observation of two-step martensitic transformation in aged NiTi shape memory alloy L transformation; Ageing; TEM; DSC 1. Introduction Shape memory effect, first discovered in binary alloys of Cu [2]. In addition to the shape memory effect giving the material the ability to return

  20. 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.

  1. 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.

  2. Instituto do petrleo e do gs nasce por causa do Brasil e tem

    E-Print Network [OSTI]

    Instituto de Sistemas e Robotica

    &D chegam a 775 milhões de dólares em 2025 A Galp Energia vai aplicar 1% das receitas no Brasil em I&D O olharmos para as pre- visões de produção de petróleo e gás da Galp Energia no Brasil ao longo da próximaInstituto do petróleo e do gás nasce por causa do Brasil e tem 110 milhões de euros até 2017

  3. 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.

  4. Nano-Structural Elucidation in Carbon Black Loaded NR Vulcanizate by 3D-TEM and In Situ WAXD Measurements

    SciTech Connect (OSTI)

    Ikeda,Y.; Kato, A.; Shimanuki, J.; Kohjiya, S.; Tosaka, M.; Poompradub, S.; Toki, S.; Hsiao, B.

    2007-01-01T23:59:59.000Z

    Three dimensional (3D) visualization of nanometer structure of carbon black dispersion in rubbery matrix has successfully been studied and reported in this paper. Use of 3D-TEM, which is computerized tomography combined with transmission electron microscopy (TEM), enabled us to reconstruct 3D images of carbon black aggregates in natural rubber (NR) matrix. The TEM measurements were conducted by a bright-field method on thin samples without any electron staining. The sample was subject to uni-axial tilting (+65 degree to -65 degree with 2 degree increment) in the sample chamber, and 66 TEM images were taken on each sample. These TEM images were used for computerized tomography to reconstruct the 3D image. This technique is designated as 3D-TEM. The nano-structural features observed by 3D-TEM were in conformity with the electron-conductivity results, and the percolation behavior was recognized. These results were further supplemented by in situ wide-angle X-ray diffraction (WAXD), i.e., simultaneous WAXD and tensile measurements on the sample to observe the strain-induced crystallization in NR vulcanizate. Upon tensile elongation, the crystallization was clearly observed in WAXD in the presence of carbon black, and it contributed to the tensile properties. In order to understand the performances of filled NR vulcanizates, it surely is necessary to know the structural states of the mixed nano-filler and the crystallites produced upon elongation.

  5. Compositional and Structural Characterization by TEM of Lattice-Mismatched III-V Epilayers

    SciTech Connect (OSTI)

    Ahrenkiel, S. P.; Rathi, M.; Nesheim, R.; Zheng, N.; Vunnam, S.; Carapella, J. J.; Wanlass, M. W.

    2011-01-01T23:59:59.000Z

    We discuss compositional and structural transmission electron microscopy (TEM) characterization of lattice-mismatched (LMM) III-V epilayers grown on GaAs by metalorganic chemical vapor deposition (MOCVD), with possible applications in high-efficiency multijunction solar cells. In addition to the use of TEM imaging to survey layer thicknesses and defect morphology, our analysis emphasizes the particular methods of energy-dispersive X-ray spectrometry (EDX) and convergent-beam electron diffraction (CBED). Outlined here is a standards-based method for extracting compositions by EDX, which uses principal-component analysis (PCA) [1], combined with the zeta-factor approach of Watanabe and Williams [2]. A procedure is described that uses the coordinates of high-order Laue zone (HOLZ) lines, which are found in the bright-field disks of CBED patterns, to extract composition and strain parameters from embedded epilayers. The majority of the crystal growth for this work was performed at NREL, which has accommodated the development at SDSM&T of the characterization techniques described. However, epilayer deposition capability at SDSM&T has recently been achieved, using a home-built system, which is presently being used to examine new lattice-mismatched structures relevant to photovoltaic technology.

  6. TEM and SIMS Analysis of (100), (110), and (111) Single Crystal Niobium

    SciTech Connect (OSTI)

    A. D. Batchelor; D. N. Leonard; P. E. Russell; F. A. Stevie; D. P. Griffis; G. R. Myneni

    2006-10-30T23:59:59.000Z

    Single crystal niobium specimens of (100), (110) and (111) crystal orientations have been analyzed using TEM and SIMS. The TEM specimens were prepared using Focused Ion Beam (FIB) and show niobium oxide thicknesses ranging from 4.9 to 8.3 nm for the three specimens after buffer chemical polishing. The oxide layers appear uniform and no significant sub-oxide region was noted. SIMS analysis was made for all three orientations on hydrogen, carbon, and oxygen before and after heat treatments at 90, 600, and 1250C. Hydrogen is at a high level between the oxide layer and niobium, but at a relatively low level in the oxide. No high oxygen concentration region was noted in the niobium below the oxide. C contamination on the surface is detected mainly at the surface. Analysis after heat treatments showed some decrease in hydrogen after the 600C heat treatment, and significant oxidation of the niobium after the 1250C heat treatment.

  7. Quantitative Electrochemical Measurements using in situ ec-S/TEM Devices

    SciTech Connect (OSTI)

    Unocic, Raymond R [ORNL] [ORNL; Sacci, Robert L [ORNL] [ORNL; Brown, Gilbert M [ORNL] [ORNL; Veith, Gabriel M [ORNL] [ORNL; Dudney, Nancy J [ORNL] [ORNL; More, Karren Leslie [ORNL] [ORNL; Gardiner, Daniel [Protochips Inc., Raleigh, NC] [Protochips Inc., Raleigh, NC; Walden II, Franklin S [Protochips Inc., Raleigh, NC] [Protochips Inc., Raleigh, NC; Damiano, John [Protochips Inc., Raleigh, NC] [Protochips Inc., Raleigh, NC; Nackashi, David P. [Protochips Inc., Raleigh, NC] [Protochips Inc., Raleigh, NC

    2014-01-01T23:59:59.000Z

    Insight into dynamic electrochemical processes can be obtained with in situ ec-S/TEM, which utilizes microfluidic electrochemical cells to characterize electrochemical processes with S/TEM imaging, diffraction or spectroscopy. The microfluidic electrochemical cell is composed of microfabricated devices with glassy carbon and platinum microband electrodes in a three-electrode cell configuration. To establish the validity of this method for quantitative in situ electrochemistry research, cyclic voltammetry, choronoamperometry and electrochemical impedance spectroscopy were performed using a standard one electron transfer redox couple using a [Fe(CN)6]3-/4- based electrolyte. Established relationships of the electrode geometry and microfluidic conditions were fitted with cyclic voltammetry and chronoamperometic measurements of analyte diffusion coefficients and was found to agree with well-accepted values that are on the order of 10-5 cm2 s-1. Influence of the electron beam on electrochemical measurements was found to be negligible during CV scans where the current profile varied only within a few nA with the electron beam on and off which is well within the hysteresis between multiple CV scans. The combination of experimental results provides a validation that quantitative electrochemistry experiments can be performed with these small-scale microfluidic electrochemical cells provided that accurate geometrical electrode configurations, diffusion boundary layers and microfluidic conditions are accounted for.

  8. 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.

  9. Journal of Power Sources 210 (2012) 286291 Contents lists available at SciVerse ScienceDirect

    E-Print Network [OSTI]

    Arnold, Craig B.

    2012-01-01T23:59:59.000Z

    solar and wind sys- tems and regenerative braking in cars. New battery chemistries and control systems

  10. Proceedings of IMECE 2004 2004 ASME International Mechanical Engineering Congress

    E-Print Network [OSTI]

    Bahrami, Majid

    recovery processes, heat exchangers, heat storage sys- tems, the breeder blanket about fusion reactors [1

  11. PROCEEDINGS, Thirty-Sixth Workshop on Geothermal Reservoir Engineering Stanford University, Stanford, California, January 31 -February 2, 2011

    E-Print Network [OSTI]

    Stanford University

    of Enhanced Geothermal Sys- tems. As cold water is circulated through a reservoir, rock contract, creating

  12. HYDROLOGICAL PROCESSES Hydrol. Process. (2011)

    E-Print Network [OSTI]

    Gvirtzman, Haim

    2011-01-01T23:59:59.000Z

    ', through fissures (Eaton and Bixler, 1987). Quinlan et al. (1996) describe karst sys- tems as having

  13. Quasi-TEM electromagnetic modes of a plasma waveguide with a nonsimply connected cross section in an external magnetic field

    SciTech Connect (OSTI)

    Kartashov, I. N., E-mail: igorkartashov@mail.ru; Kuzelev, M. V., E-mail: kuzelev@mail.ru [Moscow State University, Physics Department (Russian Federation)

    2014-12-15T23:59:59.000Z

    Electromagnetic modes of a plasma waveguide with a nonsimply connected cross section in an external magnetic field are investigated. The existence of quasi-TEM modes in a finite-strength magnetic field is demonstrated. It is shown that, in the limits of infinitely strong and zero magnetic fields, this mode transforms into a true TEM mode. The possibility of excitation of such modes by an electron beam in the regime of the anomalous Doppler effect is analyzed.

  14. Nanostructural features affecting superconducting radio frequency niobium cavities revealed using TEM and EELS

    E-Print Network [OSTI]

    Trenikhina, Y; Kwon, J; Zuo, J -M; Zasadzinski, J F

    2015-01-01T23:59:59.000Z

    Nanoscale defect structure within the magnetic penetration depth of ~100nm is key to the performance limitations of niobium superconducting radio frequency (SRF) cavities. Using a unique combination of advanced thermometry during cavity RF measurements, and TEM structural and compositional characterization of the samples extracted from cavity walls, we discover the existence of nanoscale hydrides in electropolished cavities limited by the high field Q slope, and show the decreased hydride formation in the electropolished cavity after 120C baking. Furthermore, we demonstrate that adding 800C hydrogen degassing followed by light buffered chemical polishing restores the hydride formation to the pre-120C bake level. We also show absence of niobium oxides along the grain boundaries and the modifications of the surface oxide upon 120C bake.

  15. 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.

  16. Comparative quantification and statistical analysis of ?? and ? precipitates in aluminum alloy AA7075-T651 by TEM and AFM

    SciTech Connect (OSTI)

    Garcia-Garcia, Adrian Luis, E-mail: agarciag@ipn.mx; Dominguez-Lopez, Ivan, E-mail: idominguezl@ipn.mx; Lopez-Jimenez, Luis, E-mail: llopez1002@ipn.mx; Barceinas-Sanchez, J.D. Oscar, E-mail: obarceinas@ipn.mx

    2014-01-15T23:59:59.000Z

    Quantification of nanometric precipitates in metallic alloys has been traditionally performed using transmission electron microscopy, which is nominally a low throughput technique. This work presents a comparative study of quantification of ?? and ? precipitates in aluminum alloy AA7075-T651 using transmission electron microscopy (TEM) and non-contact atomic force microscopy (AFM). AFM quantification was compared with 2-D stereological results reported elsewhere. Also, a method was developed, using specialized software, to characterize nanometric size precipitates observed in dark-field TEM micrographs. Statistical analysis of the quantification results from both measurement techniques supports the use of AFM for precipitate characterization. Once the precipitate stoichiometry has been determined by appropriate analytical techniques like TEM, as it is the case for ?? and ? in AA7075-T651, the relative ease with which specimens are prepared for AFM analysis could be advantageous in product and process development, and quality control, where a large number of samples are expected for analysis on a regular basis. - Highlights: Nanometric MgZn{sub 2} precipitates in AA7075-T651 were characterized using AFM and TEM. Phase-contrast AFM was used to differentiate metal matrix from MgZn{sub 2} precipitates. TEM and AFM micrographs were analyzed using commercially available software. AFM image analysis and TEM 2-D stereology render statistically equivalent results.

  17. 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.

  18. 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

  19. 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 0.0210.033 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.

  20. 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 Nel, F 38016 Grenoble (France); No, P., E-mail: pierre.noe@cea.fr; Marra, M.; Sabbione, C.; Fillot, F.; Bernier, N.; Ferrand, J.; Matrejean, S. [CEA-LETI, MINATEC campus, 17 rue des Martyrs, F 38054 Grenoble (France); Hippert, F. [LMGP, CNRS Grenoble-INP, MINATEC, 3 parvis Louis Nel, 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.

  1. 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.

  2. Ion channeling and TEM studies of pulse-melted Fe(Pd) alloys

    SciTech Connect (OSTI)

    Knapp, J.A.; Follstaedt, D.M.

    1983-01-01T23:59:59.000Z

    Metastable Fe(Pd) surface alloys formed by deposition of layers of Pd on (100) Fe and subsequent pulsed (approx. 70 nsec, 1.9 J/cm/sup 2/) electron beam melting into the bcc substrate have been investigated by ion backscattering/channeling and TEM. Repeated pulsed melting allowed examination of the epitaxial growth of the bcc substrate phase into the alloyed region for successively lower Pd concentrations. This procedure permitted detailed examination of the conditions for solidification with the fcc or bcc crystal structure and for metastable phase formation during rapid solidification. Bcc epitaxy is absent at Pd concentrations greater than or equal to 30 at. %, where an fcc surface layer forms. Channeling of the Pd and Fe signals was observed at Pd concentrations less than or equal to 16.5 at. %, where a single-phase, supersaturated bcc alloy is observed. At an intermediate Pd concentration of 22 to 23 at. %, both epitaxial bcc and fcc materials are formed. The observed maximum substitutional Pd concentration in the bcc phase is about a factor of 5 greater than the maximum equilibrium solid solubility.

  3. TEM Characterization of High Burn-up Microstructure of U-7Mo Alloy

    SciTech Connect (OSTI)

    Jian Gan; Brandon Miller; Dennis Keiser; Adam Robinson; James Madden; Pavel Medvedev; Daniel Wachs

    2014-04-01T23:59:59.000Z

    As an essential part of global nuclear non-proliferation effort, the RERTR program is developing low enriched U-Mo fuels (< 20% U-235) for use in research and test reactors that currently employ highly enriched uranium fuels. One type of fuel being developed is a dispersion fuel plate comprised of U-7Mo particles dispersed in Al alloy matrix. Recent TEM characterizations of the ATR irradiated U-7Mo dispersion fuel plates include the samples with a local fission densities of 4.5, 5.2, 5.6 and 6.3 E+21 fissions/cm3 and irradiation temperatures of 101-136?C. The development of the irradiated microstructure of the U-7Mo fuel particles consists of fission gas bubble superlattice, large gas bubbles, solid fission product precipitates and their association to the large gas bubbles, grain subdivision to tens or hundreds of nanometer size, collapse of bubble superlattice, and amorphisation. This presentation will describe the observed microstructures specifically focusing on the U-7Mo fuel particles. The impact of the observed microstructure on the fuel performance and the comparison of the relevant features with that of the high burn-up UO2 fuels will be discussed.

  4. Observation of thermally etched grain boundaries with the FIB/TEM technique

    SciTech Connect (OSTI)

    Palizdar, Y., E-mail: y.palizdar@merc.ac.ir [Nanotechnology and advanced materials department, Materials and energy research centre (MERC), Karaj (Iran, Islamic Republic of); San Martin, D. [MATERALIA group, Department of Physical Metallurgy, (CENIM-CSIC), Centro Nacional de Investigaciones Metalrgicas Av. Gregorio del Amo 8, 28040 Madrid (Spain); Ward, M.; Cochrane, R.C.; Brydson, R.; Scott, A.J. [Institute for Materials Research, SPEME, University of Leeds, Leeds LS2 9JT (United Kingdom)

    2013-10-15T23:59:59.000Z

    Thermal etching is a method which is able to reveal and characterize grain boundaries, twins or dislocation structures and determine parameters such as grain boundary energies, surface diffusivities or study phase transformations in steels, intermetallics or ceramic materials. This method relies on the preferential transfer of matter away from grain boundaries on a polished sample during heating at high temperatures in an inert/vacuum atmosphere. The evaporation/diffusion of atoms at high temperatures results in the formation of grooves at the intersections of the planes of grain/twin boundaries with the polished surface. This work describes how the combined use of Focussed Ion Beam and Transmission Electron Microscopy can be used to characterize not only the grooves and their profile with the surface, but also the grain boundary line below the groove, this method being complementary to the commonly used scanning probe techniques. - Highlights: Thermally etched low-carbon steel samples have been characterized by FIB/TEM Grain boundary (GB) lines below the groove have been characterized in this way Absence of ghost traces and large ? angle suggests that GB are not stationary but mobile Observations correlate well with previous works and Mullins' investigations [22].

  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. A MEMS device for In Situ TEM/AFM/SEM/STM Testing of Carbon Nanotubes and Nanowires

    E-Print Network [OSTI]

    Espinosa, Horacio D.

    is measured by recording the lateral deflection of the buckling beam [9]. In (b), the displacement is measured the transmission electron microscope (TEM); Wong, et al. [5] bent nanotubes with an AFM operated in lateral force shown in Figure 1. In (a), after a long slender beam is buckled, the displacement of the specimen

  1. In-situ TEM studies of magnetization reversal processes in magnetic nanostructures Amanda K Petford-Long1

    E-Print Network [OSTI]

    Dunin-Borkowski, Rafal E.

    nanostructure is that used in devices based on the giant magnetoresistance (GMR) or tunnel magnetoresistanceIn-situ TEM studies of magnetization reversal processes in magnetic nanostructures Amanda K Petford storage applications, often in the form of layered structures containing many thin layers. This has been

  2. 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.

  3. 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.

  4. 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'.

  5. 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

  6. Disruption Tolerant Shell (SYS 13)

    E-Print Network [OSTI]

    Martin Lukac; Lewis Girod; Deborah Estrin

    2006-01-01T23:59:59.000Z

    Sensing Disruption Tolerant Shell Martin Lukac, Lewis Girod,Solution: Disruption Tolerant Shell Data Delivery: DTN Usemanagement tool: remote shell (ssh) Published data is hop-

  7. 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.

  8. A TEM quantitative evaluation of strengthening in an Mg-RE alloy reinforced with SiC

    SciTech Connect (OSTI)

    Cabibbo, Marcello, E-mail: m.cabibbo@univpm.it; Spigarelli, Stefano

    2011-10-15T23:59:59.000Z

    Magnesium alloys containing rare earth elements are known to have high specific strength, good creep and corrosion resistance up to 523 K. The addition of SiC ceramic particles strengthens the metal matrix composite resulting in better wear and creep resistance while maintaining good machinability. The role of the reinforcement particles in enhancing strength can be quantitatively evaluated using transmission electron microscopy (TEM). This paper presents a quantitative evaluation of the different strengthening contributions, determined through TEM inspections, in an SiC Mg-RE composite alloy containing yttrium, neodymium, gadolinium and dysprosium. Compression tests at temperatures ranging between 290 and 573 K were carried out. The microstructure strengthening mechanism was studied for all the compression conditions. Strengthening was compared to the mechanical results and the way the different contributions were combined is also discussed and justified. - Research Highlights: {yields} TEM yield strengthening terms evaluation on a Mg-RE SiC alloy. {yields} The evaluation has been extended to different compression temperature conditions. {yields} Linear and Quadratic sum has been proposed and validated. {yields} Hall-Petch was found to be the most prominent strengthening contributions.

  9. 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).

  10. 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...

  11. 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?) 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.

  12. 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.

  13. 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.

  14. 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.

  15. 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. Daz; D. G. d'Enterria; F. Fernndez; A. Kugler; H. Lhner; G. Martnez-Garca; R. W. Ostendorf; Y. Schutz; P. Tlust; 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.

  16. 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.

  17. 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

  18. 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=

  19. 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.

  20. 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.

  1. 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 superconductivitymoreof 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

  2. 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.}

  3. 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.

  4. Scanning TEM | EMSL

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

    the effect of particle size on... Exsolution Enhanced Oil Recovery with Concurrent CO2 Sequestration. A novel EOR method using carbonated water injection followed by...

  5. Environmental TEM | EMSL

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

    Redox reactions of reduced flavin mononucleotide (FMN), riboflavin (RBF), and anthraquinone-2,6-disulfonate (AQDS) with Flavins are secreted by the dissimilatory...

  6. Scanning TEM | EMSL

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

    in-situ nondestructive interrogation of materials for nuclear reactors in order to ensure reactor... Separation, Characterization and Initial Reaction Studies of Magnetite...

  7. Scanning TEM | EMSL

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

    into the gas phase... Effects of La2O3 on the mixed higher alcohols synthesis from syngas over Co catalysts: A combined theoretical and experimental Using a combination of...

  8. Environmental TEM | EMSL

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

    1% hydrogen... Sorption-Enhanced Synthetic Natural Gas (SNG) Production from Syngas: A Novel Process Combining CO Methanation, Water-Gas Shift, Synthetic natural gas...

  9. ARM - Campaign Instrument - tem

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492air Comments? We would love to heargovInstrumentstdma Comments? We would love to hear from you! Send

  10. EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CERN A&B DEPARTMENT

    E-Print Network [OSTI]

    McDonald, Kirk

    of a secondary particle flux production detection system. Employed detectors are polycrystalline diamond of a secondary particle flux production detection sys- tem. Employed detectors are polycrystalline diamond production detection sys- tem. Employed detectors are polycrystalline diamond detectors and electron mul

  11. IMPORTANCE SAMPLING FOR THE SIMULATION OF STOCHASTIC PETRI NETS AND FLUID STOCHASTIC PETRI

    E-Print Network [OSTI]

    Tuffin, Bruno

    sys tems. The simulation of nonfluid models, using importance sampling, has been studied in (Obal II

  12. Identification of Severe Multiple Contingencies in Electric Power Systems

    E-Print Network [OSTI]

    Donde, Vaibhav; Lopez, Vanessa; Lesieutre, Bernard; Pinar, Ali; Yang, Chao; Meza, Juan

    2008-01-01T23:59:59.000Z

    collapse in electrical power systems, IEEE Transactions onpower sys- tems, International Journal of Electrical Power and Energy Systems,

  13. Identification of Severe Multiple Contingencies in Electric Power Systems

    E-Print Network [OSTI]

    Donde, Vaibhav

    2010-01-01T23:59:59.000Z

    collapse in electrical power systems, IEEE Transactions onpower sys- tems, International Journal of Electrical Power and Energy Systems,

  14. Green Scheduling of Control Systems for Peak Demand Reduction Truong X. Nghiem, Madhur Behl, Rahul Mangharam and George J. Pappas

    E-Print Network [OSTI]

    Pappas, George J.

    and refrigeration (HVAC&R) systems, chiller sys- tems, and lighting systems operate independently of each other

  15. RACNet: Reliable ACquisition Network for High-Fidelity Data Center Chieh-Jan Mike Liang1

    E-Print Network [OSTI]

    Amir, Yair

    by environmental control sys- tems such as Computer Room Air Conditioning (CRAC) units, water chillers, and (de

  16. Breaking Up is Hard to Do: An Investigation of Decomposition for Assume-Guarantee Reasoning

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    -way decompositions for a set of sys- tems and properties, using two different verifiers, FLAVERS and LTSA

  17. 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

  18. 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 (

  19. 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. Flp; G. Gervino; A. Guglielmetti; C. Gustavino; Gy. Gyrky; 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. Szcs; 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.

  20. 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; Flp, Zs; Gervino, G; Guglielmetti, A; Gustavino, C; Gyrky, 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; Szcs, 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.

  1. 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; Gker, 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.

  2. 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.

  3. 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.

  4. 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.

  5. 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

  6. 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.

  7. 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

  8. 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.

  9. 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

  10. 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

  11. Application of cluster-plus-glue-atom model to barrierless CuNiTi and CuNiTa 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 CuNiM (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 MNi is more negative than that of MCu.

  12. 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

  13. 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 0.20.5 ?m in diameter and 515 ?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 13501500 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 0.20.5 ?m in diameter and 515 ?m in length. The reaction temperature of 14001450 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 vaporliquidsolid 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.

  14. Transmission electron microscopy (TEM) investigations of Mn-oxide rich cathodic material from spent disposable alkaline batteries

    SciTech Connect (OSTI)

    Krekeler, Mark P.S. [Department of Environmental Science and Policy, George Mason University, Fairfax, VA 22030 (United States)], E-mail: mark.krekeler@gmail.com

    2008-11-15T23:59:59.000Z

    Transmission electron microscopy (TEM) techniques were used to investigate the spent cathodic material of a single common brand of disposable alkaline batteries. Mn-oxide particles are anhedral and irregular in shape and compose an estimated 99-95% of the <10 {mu}m size fraction of sample material. Diameters of particles vary widely and typically are between 50 nm and 3 {mu}m; however, most particles are approximately 200-400 nm in diameter. Chemical composition varies for Mn-oxide particles with concentrations being SiO{sub 2} (0.00-1.52 wt%), TiO{sub 2} (0.49-4.58 wt%), MnO (65.85-92.06 wt%), ZnO (1.00-7.53 wt%), K{sub 2}O (4.97-20.48 wt%) and SO{sub 3} (0.43-2.21 wt%). Discrete prismatic zinc crystals occur and vary from a maximum of approximately 0.8 {mu}m long x 0.15 {mu}m wide, to 100 nm long x 20 nm wide. Titanium metal was also observed in samples and composes approximately 0.25-1.0% of the <10 {mu}m size fraction of sample material. Results of this study suggest that battery components may be recycled in some special applications. Examples are low energy-low material requirement products such as paint pigments and Zn nanoparticles. This investigation provides detailed constraints on the nature of spent cathodic materials to improve existing recycling methods and develop new technologies.

  15. TEM Study on the Evolution of Ge Nanocrystals in Si Oxide Matrix as a Function of Ge Concentration and the Si Reduction Process

    E-Print Network [OSTI]

    Chew, Han Guan

    Growth and evolution of germanium (Ge) nanocrystals embedded into a silicon oxide (SiO?) system have been studied based on the Ge content of co-sputtered Ge-SiO? films using transmission electron microscopy (TEM) and X-ray ...

  16. 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.

  17. 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.

  18. 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.

  19. 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.

  20. 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.

  1. 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

  2. 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.

  3. The Sun of the Heart and the Bai-ro-rgyud-'bum

    E-Print Network [OSTI]

    Kapstein, Matthew T

    2008-01-01T23:59:59.000Z

    power of awareness (rig-pai rtsal-dbang bco-brgyad) according to the Ka?-thog tradition, and enumerates a lineage of the Rdzogs-chen sems-sde stemming from Ka?-thog (704.2-5) that passes from Dga-rab-rdo-rje through Maju?r?mitra, Dha-he-ta-la, Go... -sde, mang-ngag-gi sdeap- pears to originate in the tantras of the latter category and is unknown to the other sys- tems of Rdzogs-chen. A single reference to the threefold classification in the rnam-thar of Tibetan Studies in honour of Samten Karmay 284...

  4. 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.

  5. Comp. Sys. Mgr. 4 Curtis Rias

    E-Print Network [OSTI]

    Brinkmann, Peter

    IT Procurement Management Student Technology Fee Coordination Mobile Devices Coordination Site Licensing Coordination Computer Labs Management CUNYfirst Readiness & CUNY Alert Liaison TECHNOLOGY ADVISORY COMMITTEE Project Management Office (PMO) ISS IT Internal Operations Management Office of Information Technology

  6. Clinton Combined Utility Sys | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty EditCalifornia:PowerCER.png El CER esDatasetCityFund JumpClimeCo Corporation

  7. EnerSys | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualPropertyd8c-a9ae-f8521cbb8489 No revision| OpenElectromagneticElmwoodEnerSpective Jump

  8. 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.

  9. {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.

  10. 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=10501100 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 FTa{sub 2}O{sub 5} [Zibrov et al. Russ. J. Inorg. Chem. 48 (2003) 464471] [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) , V=532.90(1) {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) , V=528.80(2) {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) , V=532.21(1) {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 FTa{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 REO distances.

  11. 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.

  12. 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.

  13. 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.

  14. 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.

  15. 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

  16. 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.

  17. 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.

  18. 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.

  19. 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. Trk'anyi; S. Tak'acs; F. Ditri; 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.

  20. 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, HLa2Ti2TaO10nH2O (n = 1-2) could be exfoliated

  1. 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

  2. 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

  3. 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, Lonie

    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

  4. 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

  5. CryoTEM (Tecnai) | EMSL

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

    MCM-41 supports (Cu(II)-EDA-SAMMS and... In Situ Live Cell Sensing of Multiple Nucleotides Exploiting DNARNA Aptamers and Graphene Oxide Nanosheets. Adenosine-5-triph...

  6. 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.

  7. Microaspiration for high-pressure freezing: a new method for ultrastructural preservation of fragile and sparse tissues for TEM and electron tomography

    SciTech Connect (OSTI)

    Auer, Manfred; Triffo, W.J.; Palsdottir, H.; McDonald, K.L.; Inman, J.L.; Bissell, M.J.; Raphael, R.M.; Auer, M.; Lee, J.K.

    2008-02-13T23:59:59.000Z

    High-pressure freezing is the preferred method to prepare thick biological specimens for ultrastructural studies. However, the advantages obtained by this method often prove unattainable for samples that are difficult to handle during the freezing and substitution protocols. Delicate and sparse samples are difficult to manipulate and maintain intact throughout the sequence of freezing, infiltration, embedding, and final orientation for sectioning and subsequent TEM imaging. An established approach to surmount these difficulties is the use of cellulose microdialysis tubing to transport the sample. With an inner diameter of 200 micrometers, the tubing protects small and fragile samples within the thickness constraints of high-pressure freezing, and the tube ends can be sealed to avoid loss of sample. Importantly, the transparency of the tubing allows optical study of the specimen at different steps in the process. Here, we describe the use of a micromanipulator and microinjection apparatus to handle and position delicate specimens within the tubing. We report two biologically significant examples that benefit from this approach, 3D cultures of mammary epithelial cells and cochlear outer hair cells. We illustrate the potential for correlative light and electron microscopy as well as electron tomography.

  8. Numerical analysis of the effect of the TEM{sub 00} radiation mode polarisation on the cut shape in laser cutting of thick metal sheets

    SciTech Connect (OSTI)

    Zaitsev, A V; Kovalev, O B; Orishich, Anatolii M; Fomin, V M [Institute of Theoretical and Applied Mechanics, Siberian Branch, Russian Academy of Sciences, Novosibirsk (Russian Federation)

    2005-02-28T23:59:59.000Z

    The effect of polarisation of a Gaussian beam on the radiation absorption during laser cutting of metals is investigated. A generalised formula is proposed for calculating the absorption coefficient, which describes the polarisation of three types (linear, elliptical, and circular), taking into account the fact that the beam may interact with a metal surface of an arbitrary shape. A comparison with the existing analogues (in the cases of linear and circular radiation polarisation) confirmed the advantage of employing the formula for the spatial description of the shape of the surface produced, which is highly important for processing (cutting, welding, drilling) of thick materials. The effect of laser radiation characteristics on the surface shape and cut depth in cutting stainless steel sheets is investigated numerically. It is shown for the first time that the cutting of materials by the TEM{sub 00} beam is most efficient when the beam has elliptical polarisation directed along the direction of beam displacement and characterised by a specific axial ratio. (laser applications and other topics in quantum electronics)

  9. Toward a sensor-actuation software platform

    E-Print Network [OSTI]

    Lin, Kaisen

    2012-01-01T23:59:59.000Z

    Control and Data Acquisition (SCADA) Sys- tems for Command,has largely been done with SCADA systems, which are onlyand Data Acquisition (SCADA) system. SCADA systems include a

  10. Decentralised Shared Resource Constraint Scheduling with ...

    E-Print Network [OSTI]

    2012-08-16T23:59:59.000Z

    of production entities within a collaborative manufacturing sys- tem in a ...... the case when the objective function is non-additive, for exam- ple minimising...

  11. E-Print Network 3.0 - automated patient history Sample Search...

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

    sys- tems can... be designed to provide tailored information to patients on their health, their care teams, the sta- tus Source: Hunt, Galen - Operating Systems Group,...

  12. aerosol flow reactor: Topics by E-print Network

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

    APPROACH TO SPACEBORN HYPERSPECTRAL OPTICAL FLOW ESTIMATION ON DUST AEROSOLS Fabian E, Canada ABSTRACT The significant role dust aerosols play in the earth's climate sys- tem and...

  13. mXBP1u mXBP1s ATF6c XBP1s

    E-Print Network [OSTI]

    Virginia Tech

    , & Devices Space & Atmospheric Science Antennas & Propagation Optics & Photonics Networks & Cybersecurity. The department has additional emerg- ing areas of strength in autonomous sys- tems, biomedical applications

  14. agent management system: Topics by E-print Network

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

    Data Physics Websites Summary: , and the relations between hypotheses present and past. Such hypotheses are managed with a multi-agent sys- tem that plausible hypotheses...

  15. Chemical Engineering Science 57 (2002) 715733 www.elsevier.com/locate/ces

    E-Print Network [OSTI]

    Al-Arfaj, Muhammad A.

    2002-01-01T23:59:59.000Z

    acetate sys- tem with two reactants and two products: A+B C+D. 2. The ETBE system with two reactants

  16. 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

  17. 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.

  18. 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.

  19. 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.

  20. 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

  1. Design and Performance Characteristics of the ORNL AdvancedMicroscopy Laboratory and JEOL 2200FS-AC Aberration-CorrectedSTEM/TEM

    SciTech Connect (OSTI)

    Allard, Lawrence F.; Blom, Douglas A.; O'Keefe, Michael A.; Mishina, S.

    2005-02-15T23:59:59.000Z

    At ORNL, the new Advanced Microscopy Laboratory (AML) has recently been completed, with two aberration-corrected instruments installed, and two more planned in the near future to fill the 4-laboratory building. The installed JEOL 2200FS-AC has demonstrated aTEM information limit of 0.9A. This limit is expected given the measured instrument parameters (HT and OL power supply stabilities, beam energy spread, etc.), and illustrates that the environmental influences are not adversely affecting the instrument performance. In STEM high-angle annular dark-field (HA-ADF) mode, images of a thin Si crystal in<110>zone axis orientation, after primary aberrations in the illuminating beam were optimally corrected, showed a significant vibration effect. The microscope is fitted with three magnetically levitated turbo pumps (one on the column at about the specimen position,and two near floor level) that pump the Omega energy filter and detector chamber. These pumps run at 48,000 rpm, precisely equivalent to 800Hz. It was determined that the upper turbo pump was contributing essentially all of the 800Hz signal to the image, and in fact that the pump was defective. After replacing the pump with one significantly quieter than the original, the Si atomic column image and associated diffractogram(Fig. 4b) show a much-reduced effect of the 800Hz signal, but still some residual effect from the turbo pump. The upper pump will be removed from the main column to an adjacent frame on the floor, and will have a large-diameter, well-damped, pump line to the original connection to the column to effectively isolate the pump from the column. If the 800Hz signal results from mechanical vibrations, they will be damped, and if the signal results from acoustic coupling to the column, it can be damped by appropriate acoustic materials.

  2. TEM study of {beta} Prime precipitate interaction mechanisms with dislocations and {beta} Prime interfaces with the aluminium matrix in Al-Mg-Si alloys

    SciTech Connect (OSTI)

    Teichmann, Katharina [Norwegian University of Science and Technology, Trondheim (Norway)] [Norwegian University of Science and Technology, Trondheim (Norway); Marioara, Calin D.; Andersen, Sigmund J. [SINTEF Materials and Chemistry, Trondheim (Norway)] [SINTEF Materials and Chemistry, Trondheim (Norway); Marthinsen, Knut, E-mail: knut.marthinsen@material.ntnu.no [Norwegian University of Science and Technology, Trondheim (Norway)] [Norwegian University of Science and Technology, Trondheim (Norway)

    2013-01-15T23:59:59.000Z

    The interaction mechanisms between dislocations and semi-coherent, needle-shaped {beta} Prime precipitates in Al-Mg-Si alloys have been studied by High Resolution Transmission Electron Microscopy (HRTEM). Dislocation loops appearing as broad contrast rings around the precipitate cross-sections were identified in the Al matrix. A size dependency of the interaction mechanism was observed; the precipitates were sheared when the longest dimension of their cross-section was shorter than approximately 15 nm, and looped otherwise. A more narrow ring located between the Al matrix and bulk {beta} Prime indicates the presence of a transition interface layer. Together with the bulk {beta} Prime structure, this was further investigated by High Angle Annular Dark Field Scanning TEM (HAADF-STEM). In the bulk {beta} Prime a higher intensity could be correlated with a third of the Si-columns, as predicted from the published structure. The transition layer incorporates Si columns in the same arrangement as in bulk {beta} Prime , although it is structurally distinct from it. The Z-contrast information and arrangement of these Si-columns demonstrate that they are an extension of the Si-network known to structurally connect all the precipitate phases in the Al-Mg-Si(-Cu) system. The width of the interface layer was estimated to about 1 nm. - Highlights: Black-Right-Pointing-Pointer {beta} Prime is found to be looped at sizes larger than 15 nm (cross section diameter). Black-Right-Pointing-Pointer {beta} Prime is found to be sheared at sizes smaller than 15 nm (cross section diameter). Black-Right-Pointing-Pointer The recently determined crystal structure of {beta} Prime is confirmed by HAADF-STEM. Black-Right-Pointing-Pointer Between {beta} Prime and the Al-matrix a transition layer of about 1 nm is existent. Black-Right-Pointing-Pointer The {beta} Prime /matrix layer is structurally distinct from bulk {beta} Prime and the aluminium matrix.

  3. 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.

  4. 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

  5. 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.

  6. 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

  7. 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 Universit, Universit du Maine, CNRS UMR 6283, Institut des Molcules et des Matriaux du Mans, Avenue Olivier Messiaen, 72085 Le Mans Cedex 9 (France); Body, Monique, E-mail: monique.body@univ-lemans.fr [LUNAM Universit, Universit du Maine, CNRS UMR 6283, Institut des Molcules et des Matriaux du Mans, Avenue Olivier Messiaen, 72085 Le Mans Cedex 9 (France); Legein, Christophe, E-mail: christophe.legein@univ-lemans.fr [LUNAM Universit, Universit du Maine, CNRS UMR 6283, Institut des Molcules et des Matriaux du Mans, Avenue Olivier Messiaen, 72085 Le Mans Cedex 9 (France); Sadoc, Aymeric, E-mail: Aymeric.Sadoc@cnrs-imn.fr [Institut des Matriaux Jean Rouxel (IMN), Universit de Nantes, CNRS, 2 rue de la Houssinire, BP 32229, 44322 Nantes Cedex 3 (France); Boucher, Florent, E-mail: Florent.Boucher@cnrs-imn.fr [Institut des Matriaux Jean Rouxel (IMN), Universit de Nantes, CNRS, 2 rue de la Houssinire, 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 MF 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 MF 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 MF bonds features are established.

  8. 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 Nel 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.

  9. 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.; Auts, 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.

  10. J ournal of China U niversity of Geosciences, V ol. 11, N o. 3, p. 264-270, S ep tem ber 2000 IS SN 1002-0705 P rinted in China

    E-Print Network [OSTI]

    Tong, Jinnan

    J ournal of China U niversity of Geosciences, V ol. 11, N o. 3, p. 264- 270, S ep tem ber 2000 IS SN 1002- 0705 P rinted in China 3 This study is supported by the N ationalN atural Science Foundation of China (No. 49632070). M anuscrip t received M ay 8, 2000. M anuscrip t accep ted M ay 16, 2000. M iddle

  11. 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.

  12. In situ X-ray diffraction strain-controlled study of TiNbZr and TiNbTa shape memory alloys: crystal lattice and transformation features

    SciTech Connect (OSTI)

    Dubinskiy, S. [cole de technologie suprieure, 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 [cole de technologie suprieure, 1100, Notre-Dame Street West, Montreal, Quebec H3C 1K3 (Canada); Inaekyan, K. [cole de technologie suprieure, 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 Ti21.8Nb6.0Zr (TNZ) and Ti19.7Nb5.8Ta (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 TiNbZr(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.

  13. 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.

  14. 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.

  15. Clustering and Server Selection using Passive Matthew Andrews, Bruce Shepherd, Aravind Srinivasan, Peter Winkler, Francis Zane

    E-Print Network [OSTI]

    Shepherd, Bruce

    1 Clustering and Server Selection using Passive Monitoring Matthew Andrews, Bruce Shepherd, Aravind in a distributed system of content servers. We present a sys tem called Webmapper for clustering IP addresses and as signing each cluster to an optimal content server. The sys tem is passive in that the only

  16. Fault-Tolerant Distributed Garbage Collection in a Client-Server Object-Oriented Database

    E-Print Network [OSTI]

    Fault-Tolerant Distributed Garbage Collection in a Client-Server Object-Oriented Database Umesh a scalable garbage collection scheme for sys- tems that store objects at multiple servers while clients run for such a sys- tem: Servers recover from failures and retrieve information needed for safe garbage collection

  17. FaultTolerant Distributed Garbage Collection in a ClientServer ObjectOriented Database

    E-Print Network [OSTI]

    FaultTolerant Distributed Garbage Collection in a ClientServer ObjectOriented Database Umesh a scalable garbage collection scheme for sys tems that store objects at multiple servers while clients run for such a sys tem: Servers recover from failures and retrieve information needed for safe garbage collection

  18. Research Challenges for the Security of Control Systems Alvaro A. Cardenas Saurabh Amin

    E-Print Network [OSTI]

    Sastry, S. Shankar

    variety of networked information technology (IT) sys- tems connected to the physical world. Depending infrastructures), or Cyber-Physical Sys- tems (CPS) (to refer to embedded sensor and actuator net- works). Control Control systems have been at the core of critical infras- tructures and industrial plants for many decades

  19. Randomized Model Predictive Control for HVAC Systems Alessandra Parisio, Damiano Varagnolo, Daniel Risberg,

    E-Print Network [OSTI]

    Johansson, Karl Henrik

    Randomized Model Predictive Control for HVAC Systems Alessandra Parisio, Damiano Varagnolo, Daniel Conditioning (HVAC) sys- tems play a fundamental role in maintaining acceptable ther- mal comfort and Indoor. A possible solu- tion is to develop effective control strategies for HVAC sys- tems, but this is complicated

  20. Le th`eme d'une periode evanescente. Daniel Barlet

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    . In this article we study holomorphic deformations of the filtered Gauss-Manin sys- tems associated to a vanishing "themes", have good functorial properties and that there exists a canonical order on the roots polynomial, filtered Gauss-Manin sys- tem, (a,b)-module, Brieskorn module. AMS Classification 2000. 32S05, 32

  1. Conduction processes in metalinsulatormetal 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

    Metalinsulatormetal 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 FrenkelPoole emission at large biases. FowlerNordheim 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.

  2. 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}.

  3. 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

  4. 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

  5. EE major requirements and ECE Course Prerequisites Signl & Sys I

    E-Print Network [OSTI]

    Acton, Scott

    3250 (310) Enrgy Conv Spring Only Spring Only Fall Only ECE 2660 (204) Electronics I Spring Only ECE

  6. A European Project SysPAQ Birgit Mller1

    E-Print Network [OSTI]

    Boyer, Edmond

    indoor air pollutants. One of the reasons is that in most cases the chemical measurements or signals from the relevant indoor air pollutants triggering human sensory response. This project will build upon current knowledge on the perceptual effects of indoor air pollutants and on the experience gained in using chemical

  7. Alea 0, 00 (2014) Estimation for Stochastic Damping Hamiltonian Sys-

    E-Print Network [OSTI]

    Boyer, Edmond

    , Universidad Central de Venezuela. A.P. 47197, Los Chaguaramos, Caracas 1041-A, Venezuela. E-mail address: jose/FONACIT (France-Venezuela) V12M01 Equations diff´erentielles stochastiques et analyse de sensibilit

  8. Regenerative Energie Systeme RegEnSys | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty Edit with form History Facebook

  9. EnerSys GmbH | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof Energy 2,AUDIT REPORTEnergy OffshoreDeveloper -Neo Jump to:

  10. Utah Associated Mun Power Sys | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty Edit withTianlin BaxinUmwelt Management AGUser page EditUsina SantaUsinaUsinas+Utah

  11. Weakley County Mun Elec Sys | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty Edit withTianlin BaxinUmweltVillageGraph HomeWaranaWater PowerWaverly

  12. Bath Electric Gas & Water Sys | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof EnergyInnovation in Carbon CaptureAtriaPower SystemsRhode Island: EnergyOpenBath

  13. 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.

  14. GEOBULLETIN SEpTEmBEr 30Th

    E-Print Network [OSTI]

    Sheridan, Jennifer

    , sedimentary fabrics, organic compounds, minerals, stable isotope patterns, etc.) potentially can serve resource is threatened by contamination from saltwater intrusion (both from the lake and the ocean

  15. GEOBULLETIN SEpTEmBEr 20Th

    E-Print Network [OSTI]

    Carlson, Anders

    , Biofuels and the enabling role of Advance Materials will be described. Ellen Williams joined BP as Chief

  16. Um quinto dos cursos tem taxa

    E-Print Network [OSTI]

    Instituto de Sistemas e Robotica

    Eco- nómico teve acesso - que está a servir de base para a decisão das novas vagas a abrir nas uni no primeiro trimestre deste ano. ? a partir destes dados, for- necidos pelo lEFP, que a tutela actualiza o os estudantes associem es- tes dados à qualidade das insti- tuições e frisa: "O que estes da- dos

  17. 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.

  18. 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.

  19. PROSPECTS FOR CO-FIRING OF CLEAN COAL AND CREOSOTE-TREATED WASTE WOOD AT SMALL-SCALE POWER STATIONS

    E-Print Network [OSTI]

    Janis Zandersons; Aivars Zhurinsh; Edward Someus

    If a small-scale clean coal fu eled power plant is co-fu eled with 5 % of cre o-sote-treated used-up sleeper wood, the de con tam i na tion by carbonisation at 500 C in an in di rectly heated ro tary kiln with the di am e ter 1.7 m and ef fec-tive length 10 m can be real ised. It should be in cluded in the 3R Clean Coal Carbonisation Plant sys tem, which pro cesses coal. It will im prove the heat bal ance of the sys tem, since the carbonisation of wood will de liver a lot of high caloricity pyroligneous vapour to the joint fur nace of the 3R Clean Coal Carbonisation Plant. Pine wood sleeper sap wood con tains 0.25 % of sul phur, but the av er age pine sleeper wood (sap wood and heart wood) 0.05% of sul phur. Most of the sul phur is lost with the pyroligneous vapour and burned in the fur nace. Since the 3R Clean Coal Carbonisation Plant is equipped with a flue gases clean ing sys tem, the SO2 emis sion level will not ex-ceed 5 mg/m 3. The char coal of the sap wood por tion of sleep ers and that of the av er age sleeper wood will con tain 0.22 % and 0.035 % of sul phur, re spec-tively. The in crease of the carbonisation tem per a ture does not sub stan tially de crease the sul phur con tent in char coal, al though it is suf fi ciently low, and the char coal can be co-fired with clean coal. The con sid ered pro cess is suit-able for small power plants, if the bio mass in put in the com mon en ergy bal-ance is 5 to 10%. If the mean dis tance of sleep ers trans por ta tion for Cen tral and East ern Eu-rope is es ti mated not to ex ceed 200 km, the co-com bus tion of clean coal and carbonised sleep ers would be an ac cept able op tion from the en vi ron men tal and eco nomic points of view.

  20. 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

  1. 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.

  2. Proceedings CANCAM 2003, pages 106-107 CAD tools can be used to visualise a product once its

    E-Print Network [OSTI]

    Salustri, Filippo A.

    , flowcharts, IDEF, Modelica, and UML. Al- though our analysis continues, we do have some early results. Some.g. bond graphs and Modelica) are primarily for sys- tems analysis and assume that at least a systems level

  3. Supporting Information Bird et al. 10.1073/pnas.1003719108

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    -half of the 2 age range. Cesium-137 activities peak between 8.7- and 10.5-cm depth, indicating that sediment (Fig. 2). These anom- alous ages may represent old carbon being washed into the sys- tem, contamination

  4. FEL GAIN LENGTH AND TAPER MEASUREMENTS AT LCLS

    E-Print Network [OSTI]

    Ratner, D.

    2010-01-01T23:59:59.000Z

    taper mea- surements from LCLS. We ?nd gain lengths of ? 2.9AND TAPER MEASUREMENTS AT LCLS ? D. Ratner , A. Brachmann,et al. , First Results of the LCLS Laser-Heater Sys- tem,

  5. A Framework for Verification of Software with Time and Probabilities

    E-Print Network [OSTI]

    Oxford, University of

    verification techniques are able to establish sys- tem properties such as "the probability of an airbag failing quantitative properties. These might include, for example, "the probability of an airbag failing to deploy

  6. NAPS-2000, Waterloo, ON, October 2000 Stability Improvement Using TCSC in Radial Power Systems

    E-Print Network [OSTI]

    Caizares, Claudio A.

    , load rejection, break resistors, fast-valving,capacitor bank or reactor switching, etc. More recently (hydro, gas) to majorload centers over longtransmission lines. Power sys- tems with these features

  7. Particle-swarm optimization of broadband nanoplasmonic arrays

    E-Print Network [OSTI]

    ], radiative rate enhancement [2], solar cells [3], and label-free optical biosensors [4]. Until now, flocks of birds, and shoals of fish. In a PSO sys- tem, a swarm of W trial solutions, called particles

  8. application au signal: Topics by E-print Network

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

    FPXA sys- tem on an off-the-shelf FPGA device. 1 Introduction FPGA for mapping signal process- ing applications into efficient FPGA implementations (e.g., see 11, 8)....

  9. 2008. 10. 26 1082 30 1980 " 3 "

    E-Print Network [OSTI]

    Moon, Sue B.

    ://netfpga.org/netfpgawiki/images/9/90/Sys- tem_Diagram_1.gif] , NetFPGA , , . customize clean slate , Net) ( Open- Flow) , Stanford . programmable , NetFPGA . GENI clean-slate

  10. Multimedia Applications of Multiprocessor Systems-on-Chips

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    Multimedia Applications of Multiprocessor Systems-on-Chips Wayne Wolf Department of Electrical Engineering Princeton University Abstract This paper surveys the characteristics of multimedia sys- tems. Multimedia applications today are dominated by compression and decompression, but multimedia devices must

  11. ENVIRONMENTAL SUSTAINABILITY

    E-Print Network [OSTI]

    27 ICT AND ENVIRONMENTAL SUSTAINABILITY T he environment is a large complex sys- tem. Managing. Environmental Monitoring and Associated Resource Management and Risk Mitigation ICTimprovestheabilitytoobtain,storeandinte- grate large volumes of environmental data and to conductsimulationandanalysisinrealtime

  12. Uncertainty Propagation for Quality Assurance in Reinforcement Learning

    E-Print Network [OSTI]

    Schneegass and Steffen Udluft are with the Learning Sys- tems Department of the Siemens AG, Corporate Technology, Informa- tion & Communications; email: daniel.schneegass.ext@siemens.com, stef- fen.udluft@siemens

  13. J Med Syst (2013) 37:9957 DOI 10.1007/s10916-013-9957-0

    E-Print Network [OSTI]

    Potkonjak, Miodrag

    2013-01-01T23:59:59.000Z

    - efficient management of sensor information gathering and processing. Mobile health monitoring with the focus monitoring sys- tem whose layer in the system corresponds to decomposed subproblems, and interfaces between monitoring Energy optimization Parallel offloading Mobile cloud computing Introduction Many successful

  14. 1540-7977/11/$26.002011 IEEE2 ieee power & energy magazine september/october 2011 Communication

    E-Print Network [OSTI]

    Roy, Sumit

    requirements are not just traditional "home-run" scada requirements; they are more like a mesh in which any point in the system may need to communicate with any other point in the sys- tem. the speed and latency

  15. Mosaics: Life, Language, and Human Behavior sfibulletin

    E-Print Network [OSTI]

    and telecommunication networks), and in molecular sys- tems--focuses on these entities as interconnected networks Santa Fe, New Mexico 87501, USA Phone (505) 984-8800 fax (505) 982-0565 home page: http

  16. PERFORMANCE ANALYSIS OF A WINDOWED HIGH TEMPERATURE GAS RECEIVER USING A SUSPENSION OF ULTRAFINE CARBON PARTICLES AS THE SOLAR ABSORBER

    E-Print Network [OSTI]

    Fisk, William J.

    2012-01-01T23:59:59.000Z

    with a regenerated gas turbine sys- tem providing severaltemperature for powering a gas turbine or to supply indus-from the compressor of a gas turbine and passes on to the

  17. The Case for Semantic Aware Remote Replication Xiaotao Liu, Gal Niv, K.K. Ramakrishnan

    E-Print Network [OSTI]

    Fisher, Kathleen

    efficiency and safe remote replication with tight recovery-point and recovery-time objectives. Using sys- tems is a high priority. However, these desirable proper- ties come at a price. First, because

  18. Model Predictive Control of a Nonlinear Large-Scale Process Network Used in the Production of Vinyl Acetate

    E-Print Network [OSTI]

    Tu, TungSheng

    2013-01-01T23:59:59.000Z

    operation. Journal of Process Control, [10] C. E. Garcia, D.sys- tems. Journal of Process Control, 23:404414, 2013. [processes. Journal of Process Control, 21:501509, 2011. [

  19. 3D numericalmodellingof grabeninteraction and linkage: a case studyof the Canyonlands grabens,

    E-Print Network [OSTI]

    Fossen, Haakon

    with limited segment interaction and (4) an abandoned graben segment in a sys- tem of multiple competing fault growth in general and structurally complex hydrocarbon reservoirs in particular (e.g., Morley

  20. 1 INTRODUCTION Engineered critical infrastructures, e.g. distribution,

    E-Print Network [OSTI]

    Boyer, Edmond

    failures are the electrical power transmission sys- tems, which are subject to multiple hazards and threats1 INTRODUCTION Engineered critical infrastructures, e.g. distribution, communication and disruptions and are highly vulnerable to widespread failure under ad- verse conditions" [Duenas

  1. Propagation and refraction of chemical waves generated by local periodic forcing in a reaction-diffusion model

    E-Print Network [OSTI]

    Yang, Lingfa

    on regional and global pollution has raised concern worldwide 6 . Global air pollution may be related to LPF counterpart in optical or acoustic sys- tems: The angle of reflection is always equal to the critical angle

  2. PDF file

    E-Print Network [OSTI]

    2006-01-07T23:59:59.000Z

    Dec 1, 2004 ... n :n?n0} forms a complete orthogonal sys- tem in L2 ...... cult to design a suitable finite difference, finite element or collocation-type methods...

  3. HOSPITAL ENERGY AUDITS: A BIBLIOGRAPHY

    E-Print Network [OSTI]

    Pollack, R. I.

    2011-01-01T23:59:59.000Z

    ilDesign Guidelines for Solid Waste Boiler Sys- tems:heat pump systems. and solid-waste boiler systems. Theof a regional. centralized solid waste management system for

  4. International Journal of Bifurcation and Chaos, Vol. 16, No. 3 (2006) 671692 c World Scientific Publishing Company

    E-Print Network [OSTI]

    Hiskens, Ian A.

    , 2004], and power electronics [Rajaraman et al., 1996; Yuan et al., 1998]. In fact, any physical device. Examples are drawn from power electronics, power sys- tems and robotics, all of which involve intrinsic

  5. IEEE TRANSACTIONS ON ELECTRON DEVICES, VOL. 47, NO. 9, SEPTEMBER 2000 1707 CurrentVoltage Characteristics of High Current

    E-Print Network [OSTI]

    . Lake is with the Applied Research Laboratory, Raytheon Systems Com- pany, Dallas, TX 75243 USA. A. C. Seabaugh was with the Applied Research Laboratory, Raytheon Sys- tems Company, Dallas, TX 75243 USA. He

  6. 1 Introduction 1.1 Motivation

    E-Print Network [OSTI]

    Pratt, Vaughan

    1 Introduction 1.1 Motivation Most tasks require a person or an automated system to reason: to take focus in this book is on models for complex sys- #12;2 Chapter 1. Introduction tems that involve

  7. Reactive oxygen species: a breath of life or death?

    E-Print Network [OSTI]

    Fruehauf, John P; Meyskens, Frank L Jr

    2007-01-01T23:59:59.000Z

    AP1, activator protein-1; ODD, oxygen-dependent degradationSignaling response when oxygen levels decrease (Fig. 1C;3. Halliwell B. Reactive oxygen species in living sys- tems:

  8. PERFORMANCE ANALYSIS OF A WINDOWED HIGH TEMPERATURE GAS RECEIVER USING A SUSPENSION OF ULTRAFINE CARBON PARTICLES AS THE SOLAR ABSORBER

    E-Print Network [OSTI]

    Fisk, William J.

    2012-01-01T23:59:59.000Z

    from the compressor of a gas turbine and passes on to thewith a regenerated gas turbine sys- tem providing severaltemperature for powering a gas turbine or to supply indus-

  9. Autonomous Docking of a Smart Wheelchair for the

    E-Print Network [OSTI]

    Spletzer, John R.

    utility vehicle. At the core of ATRS is a "smart" wheelchair sys- tem that autonomously navigates between tank, fuel system, and heating/ cooling systems of the vehicle (Wood, 2004). While enabling independent Autonomous Docking of a Smart

  10. Sensor Placement and Diagnosability Analysis at Design Stage

    E-Print Network [OSTI]

    Yan, Yuhong

    ) project, a V framework EU project, aims at the definition of a new design process for automotive sys- tems. The goal is to integrate the process of diagnostic development (FMEA, diagnosability analysis, etc

  11. 2-1 2002 SITE ENVIRONMENTAL REPORT CHAPTER 2: ENVIRONMENTAL MANAGEMENT SYSTEM

    E-Print Network [OSTI]

    Homes, Christopher C.

    SCIENCE ASSOCIATES The International Organization for Standardizations ISO 14001 is a globally recog Organization for Standardization (ISO) 14001 environmental management standard, with additional emphasis- nized standard that defines the structure of an organizations environmental management sys- tem (EMS

  12. adfa, p. 1, 2011. Springer-Verlag Berlin Heidelberg 2011

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    and Ride systems, Car-Sharing and Car-Pooling systems (AUTOLIB...), Ride Sharing systems. Also, recent reactive sys- tems, which meet mobility demands in a dynamic way while implementing some vehicle sharing

  13. This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research

    E-Print Network [OSTI]

    Cao, Guozhong

    synthe- sized by electrodeposition of vanadium pentoxide onto the porous carbon scaffold which reserved. 1. Introduction Lithium-ion batteries have replaced much of older battery sys- tems like nickel

  14. HOSPITAL ENERGY AUDITS: A BIBLIOGRAPHY

    E-Print Network [OSTI]

    Pollack, R. I.

    2011-01-01T23:59:59.000Z

    heat pump systems. and solid-waste boiler systems. TheilDesign Guidelines for Solid Waste Boiler Sys- tems:steam, chilled water and solid waste incinera- tion to the

  15. Comparison of Control Strategies for Energy Efficient Building HVAC Systems

    E-Print Network [OSTI]

    Maasoumy, Mehdi; Sangiovanni-Vincentelli, Alberto

    2014-01-01T23:59:59.000Z

    optimal control design for HVAC systems. In Dynamic SystemOpti- mal control of HVAC systems in the presence of imper-consumption minimization of hvac sys- tems using model

  16. From Turbo2 to TurboWin For ages already, information about

    E-Print Network [OSTI]

    Koek, Frits

    From Turbo2 to TurboWin For ages already, information about the weather on board ships was re the operating sys- tem MsDOS and was called, suggesting a `speedy' character, Turbo2 (Turbo Transmission

  17. University Library The Jean and Charles Schulz Information Center

    E-Print Network [OSTI]

    Ravikumar, B.

    , and much more. In addition to open shelving, the Information Center has a state-of-the-art Automated Retrieval Sys- tem (ARS) that provides quick access to items housed in a computer- managed shelving system

  18. Load Forecasting using Fixed-Size Least Squares Support Vector Machines

    E-Print Network [OSTI]

    -SVM formulation, on the other hand, solves a linear sys- tem in dual space under a least-squares cost function [13 series comes from a local low voltage substation in Belgium and it contains 28,000 hourly values

  19. Haishun Yang, Ph.D. Haishun Yang is a research assistant pro-

    E-Print Network [OSTI]

    Nebraska-Lincoln, University of

    development; modeling of bioenergy sys- tem efficiency and greenhouse gas; soil carbon dynamics in dif- ferent target, considering the volatility of fuel prices and the state of the economy in general," said tour

  20. Solving net constrained hydrothermal Nash-Cournot equilibrium problems via the

    E-Print Network [OSTI]

    Solodov, Mikhail V.

    , including a medium-size real-life sys- tem. Among other things, it is quantified when the policy of pumping. CIFASIS - CONICET, FCEIA, UNR, Argentina. parente@cifasis-conicet.gov.ar. CONICET, PLADEMA, UNICEN, Arg

  1. 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.

  2. 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.

  3. 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

  4. 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

  5. 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 (5100?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.

  6. 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.

  7. analytical tem comparisons: Topics by E-print Network

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

    solutions Computer Technologies and Information Sciences Websites Summary: -mining or radioactive waste storage. Despite the constraints imposed by geological considerations,...

  8. In Situ TEM Observation of Dislocation Evolutionin Polycrystalline UO2

    SciTech Connect (OSTI)

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

    2014-10-01T23:59:59.000Z

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

  9. TEM Examination of Advanced Alloys Irradiated in ATR

    SciTech Connect (OSTI)

    Jian Gan, PhD

    2007-09-01T23:59:59.000Z

    Successful development of materials is critical to the deployment of advanced nuclear power systems. Irradiation studies of candidate materials play a vital role for better understanding materials performance under various irradiation environments of advanced system designs. In many cases, new classes of materials have to be investigated to meet the requirements of these advanced systems. For applications in the temperature range of 500 800C which is relevant to the fast neutron spectrum burner reactors for the Global Nuclear Energy Partnership (GNEP) program, oxide dispersion strengthened (ODS) and ferritic martensitic steels (e.g., MA957 and others) are candidates for advanced cladding materials. In the low temperature regions of the core (<600C), alloy 800H, HCM12A (also called T 122) and HT 9 have been considered.

  10. Correlation Analysis of TEM Images of Nanocrystal Molecules

    E-Print Network [OSTI]

    Micheel, Christine

    2009-01-01T23:59:59.000Z

    Chang, H. ; Yang, H. ; Alivisatos, A.P. J. Am. Chem. Soc.S.C. ; Micheel, C.M. ; Alivisatos, A.P. Chem. Mater. 2005,P.E. ; Micheel, C. ; Alivisatos, A.P. ; Seeman, N.C. Nano

  11. ainda tem lugar: Topics by E-print Network

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

    modulated structure Materials Science Websites Summary: samples, but not in the non-superconduct- ing samples, implies that these superstructures might of these oxygen vacancies....

  12. Multi-view Modeling to Support Embedded Systems Engineering in SysML

    E-Print Network [OSTI]

    in multiple domain-specific tools, namely EPLAN FluidTM (to create production ready layouts) and Modelica R

  13. Abstract--The bastard grunt (Pomada sys incisus) is one of the most abundant

    E-Print Network [OSTI]

    fishes inhabiting the Canary Islands. Age and growth were studied from samples collected between October is the Canary Islands. represented by 37 species distributed around the world. Members of this family at weekly intervals from Canary Islands. The bastard grunt is a discarded commercial catches taken

  14. Cold Vacuum Drying facility civil structural system design description (SYS 06)

    SciTech Connect (OSTI)

    PITKOFF, C.C.

    1999-07-06T23:59:59.000Z

    This document describes the Cold Vacuum Drying (CVD) Facility civil - structural system. This system consists of the facility structure, including the administrative and process areas. The system's primary purpose is to provide for a facility to house the CVD process and personnel and to provide a tertiary level of containment. The document provides a description of the facility and demonstrates how the design meets the various requirements imposed by the safety analysis report and the design requirements document.

  15. Cold Vacuum Drying facility fire protection system design description (SYS 24)

    SciTech Connect (OSTI)

    PITKOFF, C.C.

    1999-07-06T23:59:59.000Z

    This document describes the Cold Vacuum Drying Facility (CVDF) fire protection system (FPS). The FPS provides fire detection, suppression, and loss limitation for the CVDF structure, personnel, and in-process spent nuclear fuel. The system provides, along with supporting interfacing systems, detection, alarm, and activation instrumentation and controls, distributive piping system, isolation valves, and materials and controls to limit combustibles and the associated fire loadings.

  16. Cold Vacuum Dryer (CVD) Facility Fire Protection System Design Description (SYS 24)

    SciTech Connect (OSTI)

    SINGH, G.

    2000-10-17T23:59:59.000Z

    This system design description (SDD) addresses the Cold Vacuum Drying (CVD) Facility fire protection system (FPS). The primary features of the FPS for the CVD are a fire alarm and detection system, automatic sprinklers, and fire hydrants. The FPS also includes fire extinguishers located throughout the facility and fire hydrants to assist in manual firefighting efforts. In addition, a fire barrier separates the operations support (administrative) area from the process bays and process bay support areas. Administrative controls to limit combustible materials have been established and are a part of the overall fire protection program. The FPS is augmented by assistance from the Hanford Fire Department (HED) and by interface systems including service water, electrical power, drains, instrumentation and controls. This SDD, when used in conjunction with the other elements of the definitive design package, provides a complete picture of the FPS for the CVD Facility.

  17. U-045: Windows Win32k.sys Keyboard Layout Bug Lets Local Users...

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

    Restrict access to trusted users only. Addthis Related Articles U-047: Siemens Automation License Manager Bugs Let Remote Users Deny Service or Execute Arbitrary Code U-046:...

  18. DATABASE Open Access DBSecSys: a database of Burkholderia mallei

    E-Print Network [OSTI]

    Biotechnology High Performance Computing Software Applications Institute, Telemedicine and Advanced Technology

  19. U-028: Microsoft Windows win32k.sys TrueType Font Parsing Vulnerability

    Broader source: Energy.gov [DOE]

    A vulnerability has been reported in Microsoft Windows, which can be exploited by malicious people to compromise a user's system.

  20. 1. Introduction Logic controllers are used in an increasing number of sys-

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    systems, transport systems, power plants and production systems. Numerous components of our daily lives is designed or at avoid- ing flaws during design. The first approach consists in letting the control system by using model-checking techniques (Brard et al., 1999) pro- vided that control laws can be formally

  1. Declarative Specification of Gene Regulatory Networks and Query Evaluation in PathSys

    E-Print Network [OSTI]

    Gupta, Amarnath

    Abstract) Amarnath Gupta Yang Yang Aditya Bagchi Animesh Ray University of California Indian Statistical

  2. Cold Vacuum Drying facility HVAC system design description (SYS 30-1 THRU 30-5)

    SciTech Connect (OSTI)

    PITKOFF, C.C.

    1999-07-02T23:59:59.000Z

    This document describes the Cold Vacuum Drying Facility (CVDF) heating, ventilation, and air conditioning system (HVAC). The CVDF HVAC system consists of the Administrative building HVAC system, the process bay recirculation HVAC system, the process bay local HVAC and process vent system, the process general supply/exhaust HVAC system, and the Reference air system. These HVAC sub-systems support the CVDF process and provide secondary confinement of contamination and the required filtration of exhaust.

  3. EnerSys Motive Power Hawker formerly Energy Storage Group ESG | 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 are being directedAnnual SiteofEvaluating A PotentialJump to:Emminol Jump to: navigation,EnableEner3

  4. DOE Orders AeroSys to Halt Distribution of Inefficient Air Conditioner and

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613PortsmouthBartlesvilleAbout »Department of2 DOE FitsEnergyMessagein

  5. Microsoft Word - NG_ResQrySys_UsersGuide_October2014_Final.docx

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40 Buildingto17 3400,Information Administration2 U.S.and Winter Fuels8 11 1Natural

  6. DOE Institutes Enforcement Action Against AeroSys, Inc. for Failure to

    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"Wave theJulyD&DDepartment of Energy Identifiesfor Failure

  7. AeroSys: Noncompliance Determination (2010-SE-0302) | Department of Energy

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011AT&T, Inc.'s Reply Comments AT&T,FACT S HEET FACT S

  8. AeroSys: Proposed Penalty (2011-SCE-1624) | Department of Energy

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011AT&T, Inc.'s Reply Comments AT&T,FACT S HEET FACT SProposed Penalty

  9. AeroSysNNC_3-25.pdf | Department of Energy

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011AT&T, Inc.'s Reply Comments AT&T,FACT S HEET FACT SProposed

  10. U-045: Windows Win32k.sys Keyboard Layout Bug Lets Local Users Deny Service

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn April 23,EnergyChicopeeTechnologyfactTuscarora Phase IIDOE OGain Unauthorizedquery.c|

  11. DOE Orders AeroSys to Halt Distribution of Inefficient Air Conditioner and

    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"WaveInteractions and Policy (2009) | Department

  12. Department of Energy Announces Testing for AeroSys, Inc. Products to Ensure

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed off Energy.gov. Are you0andEnergyGlobal Nuclear EnergySouth CarolinaJob TrainingCompliance with

  13. Department of Energy Announces Testing for AeroSys, Inc. Products to Ensure

    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:Revised Finding of No53197 ThisFinal ReportDevelopmentPortland

  14. NuCellSys GmbH formerly Ballard AG formerly XCellsis | 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 are being directedAnnual SiteofEvaluatingGroup |JilinLuOpenNorth AmericaNorthwest Rural PubNovaNMRE |Nu Element

  15. EnSys Energy Report on Keystone XL Pipeline | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy Chinaof EnergyImpactOn July 2, 2014 in theGroupJuneThis76 IDepartment

  16. Department of Energy Subpoenas Compliance Data from AeroSys, Inc. |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy China 2015 Business42.1Energy | Department ofofViolationsThe

  17. 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

  18. 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...

  19. 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:

  20. 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

  1. 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.

  2. 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

  3. 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

  4. 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.

  5. Escape Capsule: Explicit State is Robust and Scalable Shriram Rajagopalan, Dan Williams, Hani Jamjoom, and Andrew Warfield

    E-Print Network [OSTI]

    Warfield, Andrew

    of sys- tems to effectively scale or respond to failures. Given the strong desire to build elastic- plication instances, thereby simplifying design of elastic and highly available systems, while retaining, in both scalable and reliable systems design [1,2,7,8,14,18,23] has struggled with the encapsulation

  6. 20 21division of engineering & applied science ENGenious ISSUE 8 2011 PROGRESS REPORT

    E-Print Network [OSTI]

    of surgically implanted electrode arrays and as- sociated computer algorithms. Eight years ago, my group started electrode arrays that can interface computers to damaged nervous sys- tems. For nearly a decade, my group, we engaged Profes- sor Yu-Chong Tai's group to develop miniature micro-fabricated electrode array

  7. Maximum Output Amplitude of Linear Systems for certain Input Constraints1

    E-Print Network [OSTI]

    Sontag, Eduardo

    of this input and calculates the maximum amplitude of the output. The solution of this problem is a necessary, Linear Sys- tems. 1 Introduction and Motivation Most practical control problems are dominated by hard bounds. Valves can only be operated between fully open and fully closed, pumps and compressors have

  8. november 2009 | vol. 52 | no. 11 | communications of the acm 13 PhotograPhbyJonathanhiLLer,CorneLLUniVerSity

    E-Print Network [OSTI]

    Bongard, Josh

    initial direction and no knowledge of physics, mechanics, or geometry, derive equations represent- ing fundamental laws of nature. Conventional machine learning sys- tems usually aim to generate predictive models- tion of energy--of the kind that govern the behavior of the universe. The technique may come just

  9. The Economic Case for Bulk Energy Storage in Transmission Systems

    E-Print Network [OSTI]

    The Economic Case for Bulk Energy Storage in Transmission Systems with High Percentages to Engineer the Future Electric Energy System #12;#12;The Economic Case for Bulk Energy Storage Economic Case for Bulk Energy Storage in Transmission Sys- tems with High Percentages of Renewable

  10. JULY/AUGUST 2003 31 C O M P U T A T I O N A L

    E-Print Network [OSTI]

    Iyengar, Srinivasan S.

    reactions within the MD simulations. Unfortunately, this apparently logical extension to the MD method turns step in MD simulations. Suffice it to say that to model complex condensed phases using MD simulation simulation of a reactive sys- tem, we require an atomistic model potential en- ergy surface (PES), or force

  11. Blind Separation of Filtered Sources Using State-Space Approach

    E-Print Network [OSTI]

    Cichocki, Andrzej

    Blind Separation of Filtered Sources Using State-Space Approach Liqing Zhang and Andrzej Cichockiy to multichannel blind separation/generalized deconvolution, assuming that both mixing and demixing models are described by stable linear state-space sys- tems. We decompose the blind separation problem into two pro

  12. An Evolutionary Approach For Blind Deconvolution Of Barcode Images With Nonuniform Illumination

    E-Print Network [OSTI]

    Dumas, Laurent

    in industrial applications (supermarket checkout sys- tem, labelling railroad cars, ...). Nowadays, every comparison, allergen database (gluten, peanut ...). Unfortunately, it is not usual to have its own personal blurred and distorted by various factors, including speckle noise, ambient light. Then, a way, to decode

  13. he application of rapid prototyping (RP) in fabricat-ing nonassembly robotic systems with inserts is pre-

    E-Print Network [OSTI]

    Mavroidis, Constantinos

    T he application of rapid prototyping (RP) in fabricat- ing nonassembly robotic systems for the rapid and automatic design and fabrication of robotic sys- tems a reality is to study the application with inserts is pre- sented in this article. The development of robotic systems that have all necessary

  14. Frontiers of Reverse Engineering: a Conceptual Model Gerardo Canfora and Massimiliano Di Penta

    E-Print Network [OSTI]

    Di Penta, Massimiliano

    is not available--the sys- tem binaries. The IEEE-1219 [32] standard recommends reverse engineering as a key Software reverse engineering is a crucial task to recon- struct high-level views of a software system--with the pur- pose of understanding and/or maintaining it--when the only reliable source of information

  15. Introducing the Web-of-Things in Building Automation: A Gateway for KNX installations

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    {gerome.bovet, jean.hennebert}@hefr.ch Keywords: Smart Buildings, Web-of-Things, RESTful, KNX, Building systems. Buildings have become "smart" and are now real information sys- tems using dedicated building. Figure 1: Network heterogeneity in smart buildings Web services are nowadays widespread in hetero

  16. SDJS: The Duck Hunter Problem in Wireless Sensor Networks

    E-Print Network [OSTI]

    Beigl, Michael

    SDJS: The Duck Hunter Problem in Wireless Sensor Networks Albert Krohn, Tobias Zimmer, Michael) is a new transmission scheme targeted to highly mobile and ad hoc wireless sys- tems. It is based of devices in a mobile wireless ad hoc network. This new approach can increase the speed of the estimation

  17. Reprinted from Working Notes of the AAAI Spring Symposium on DecisionTheoretic Planning, March, 1994, Steve Hanks, Stuart Russell, and Michael Wellman, editors.

    E-Print Network [OSTI]

    Doyle, Jon

    Technology Square Cambridge, MA 02139 doyle@lcs.mit.edu Michael P. Wellman Artificial Intelligence Laboratory in automated reasoning sys­ tems. Our semantics lifts comparisons of indi­ viduals to comparisons of classes­ pletely and directly encode it in the planning system, as the domain of outcomes is combinatorially large

  18. Reprinted from Working Notes of the AAAI Spring Symposium on Decision-Theoretic Planning, March, 1994, Steve Hanks, Stuart Russell, and Michael Wellman, editors.

    E-Print Network [OSTI]

    Doyle, Jon

    Technology Square Cambridge, MA 02139 doyle@lcs.mit.edu Michael P. Wellman Artificial Intelligence Laboratory in automated reasoning sys- tems. Our semantics lifts comparisons of indi- viduals to comparisons of classes and directly encode it in the planning system, as the domain of outcomes is combinatorially large or infinite

  19. Navigating through Mashed-up Applications with COMPASS

    E-Print Network [OSTI]

    Milo, Tova

    Navigating through Mashed-up Applications with COMPASS 1 Tel-Aviv University 2 IBM Haifa Research others. To address this difficulty, we present COMPASS, a system that assists users in their navigation them may be non-trivial. To address this difficulty, we present here COMPASS, a sys- tem that assists

  20. Virtual MISO Triggers in WiFi-like Networks Oscar Bejarano and Edward W. Knightly

    E-Print Network [OSTI]

    Knightly, Edward W.

    Virtual MISO Triggers in WiFi-like Networks Oscar Bejarano and Edward W. Knightly ECE Department, Rice University, Houston, TX 77005 Technical Report Abstract--Virtual Multiple-Input Single-Output (vMISO) sys- tems distribute multi-antenna diversity capabilities between a sending and a cooperating node. vMISO

  1. Virtual MISO Triggers in Wi-Fi-like Networks Oscar Bejarano and Edward W. Knightly

    E-Print Network [OSTI]

    Knightly, Edward W.

    Virtual MISO Triggers in Wi-Fi-like Networks Oscar Bejarano and Edward W. Knightly ECE Department-Input Single-Output (vMISO) sys- tems distribute multi-antenna diversity capabilities between a sending and a cooperating node. vMISO has the potential to vastly improve wireless link reliability and bit error rates

  2. Virtual MISO: Experimental Evaluation of MAC to Network-Scale Factors

    E-Print Network [OSTI]

    Virtual MISO: Experimental Evaluation of MAC to Network-Scale Factors Oscar Bejarano and Edward W-Input Single-Output (vMISO) sys- tems distribute multi-antenna diversity capabilities between a sending and a cooperating node. vMISO has been shown to vastly improve wireless link reliability and bit error rates

  3. Optimal MU-MIMO precoder with MISO decomposition approach

    E-Print Network [OSTI]

    Gesbert, David

    Optimal MU-MIMO precoder with MISO decomposition approach Mustapha Amara, Yi Yuan-Wu Orange Labs considered the best existing precoder design algorithm for a MISO multiuser sys- tem proposed in [1 procedure transforming the MU-MIMO channel for each iteration into a MU-MISO channel trough virtual channel

  4. BLIND CHANNEL IDENTIFICATION OF MISO SYSTEMS BASED ON THE CP DECOMPOSITION OF CUMULANT TENSORS

    E-Print Network [OSTI]

    BLIND CHANNEL IDENTIFICATION OF MISO SYSTEMS BASED ON THE CP DECOMPOSITION OF CUMULANT TENSORS algorithm for identifying the parameters of MISO sys- tem. 1. INTRODUCTION We consider the following-Input Single-Output (MISO) channel, y[n] is the output signal. Signals and system are assumed to be complex

  5. SMSE PRECODER DESIGN IN A MULTIUSER MISO SYSTEM WITH LIMITED FEEDBACK Muhammad Nazmul Islam and Raviraj Adve

    E-Print Network [OSTI]

    Adve, Raviraj

    SMSE PRECODER DESIGN IN A MULTIUSER MISO SYSTEM WITH LIMITED FEEDBACK Muhammad Nazmul Islam in the downlink of a multi-user (MU) multiple input single output (MISO) sys- tem with quantized channel state MISO linear transceivers that exist in the limited feedback literature. Second, we show analytically

  6. VOLUME 82, NUMBER 22 P H Y S I C A L R E V I E W L E T T E R S 31 MAY 1999 Autoresonant (Nonstationary) Excitation of the Diocotron Mode in Non-neutral Plasmas

    E-Print Network [OSTI]

    Gilson, Erik

    on the autoresonant (nonlinear phase locking) manipulation of the diocotron mode in a non-neutral plasma of nonlinear waves and oscillations. Au- toresonance (nonlinear phase locking) is one method of achieving amplitude. Assume that the sys- tem is initially phase locked to its drive. In autoresonance, increasing

  7. Effects of Price-Responsive Residential Demand on Retail and Wholesale Power Market Operations

    E-Print Network [OSTI]

    Tesfatsion, Leigh

    1 Effects of Price-Responsive Residential Demand on Retail and Wholesale Power Market Operations/C) on integrated retail and wholesale power market operations. The physical operations of the A/C sys- tem at wholesale conditional on A/C load, and the retail energy prices offered to residential A/C consumers

  8. Dual-Sampling-Rate Moving Horizon Control of a Class of Linear Systems with Input Saturation and

    E-Print Network [OSTI]

    Dual-Sampling-Rate Moving Horizon Control of a Class of Linear Systems with Input Saturation horizon control scheme for a class of linear, continuous-time plants with strict input saturation horizon control, robust, fast sampling, stability, linear sys- tems, input constraints 1 Introduction

  9. 1486 IEEE TRANSACTIONS ON AUTOMATIC CONTROL, VOL. 51, NO. 9, SEPTEMBER 2006 Accessibility of Switched Linear Systems

    E-Print Network [OSTI]

    Wang, Yuan

    the controllability of switched linear sys- tems. The structure of accessibility Lie algebra is revealed. Some accessi or normal) controllability of a large class of switched linear systems are obtained. Index Terms--Accessibility, controllability, Lie algebra, switched linear system. I. INTRODUCTION Consider a switched linear system _x(t) = A

  10. 862 IEEE TRANSACTIONS ON AUTOMATIC CONTROL, VOL. 53, NO. 3, APRIL 2008 Book Reviews

    E-Print Network [OSTI]

    Ray, Asok

    of linear control systems emerged in the de- terministic setting with the work of Nyquist, Bode, and other and Bernstein) also contributed to unification of the concepts of robust linear optimal control and linear Methods in Robust Control of Linear Stochastic Sys- tems (Mathematical Concepts and Methods in Science

  11. Geographic Privacy-aware Knowledge Discovery Fosca Giannotti2, Mirco Nanni2, Dino Pedreschi1, and Chiara Renso2

    E-Print Network [OSTI]

    Malerba, Donato

    , based on new privacy- preserving methods for extracting knowledge from large amounts of raw data ref in the advocated form of geographic knowledge a key driver, such as in transport, environment and risk management and sys- tems for knowledge discovery and delivery, based on new automated privacy-preserving methods

  12. Efficient Management of Idleness in Storage Systems

    E-Print Network [OSTI]

    Smirni, Evgenia

    -off between the performance of fore- ground and background tasks. As a result, the storage system is better4 Efficient Management of Idleness in Storage Systems NINGFANG MI College of William and Mary ALMA of storage sys- tems are scheduled with low priority and served during idle times. Under such conditions

  13. Differential Refinement Logic Thesis Proposal

    E-Print Network [OSTI]

    , Cyber-Physical Sys- tems, Hybrid Systems, Distributed Hybrid Systems, Formal Verification, Formal-physical systems. Cyber- physical systems (CPSs), such as computer-controlled cars, airplanes or robots play has provided: the first formal verification of dis- tributed car control; the first formal

  14. Dynamical epidemic suppression using stochastic prediction and control Ira B. Schwartz

    E-Print Network [OSTI]

    Billings, Lora

    of stochastic dynamical sys- tems [13].) Other methods pulse the population without sam- pling for predictionDynamical epidemic suppression using stochastic prediction and control Ira B. Schwartz Plasma of stochastic processes with underlying deterministic structure. DOI: 10.1103/PhysRevE.70.046220 PACS number

  15. Effects of interactive vegetation phenology on the 2003 summer Marc Stfanon,1

    E-Print Network [OSTI]

    D'Andrea, Fabio

    , associated with an increase of the temperature mean and variability in the context of global warming its impacts on the economic and ecological sys- tems, through reduction in productivity of natural and culti- vated vegetation [Ciais et al., 2005; COPA-COGECA, 2003], lower energy supply and electricity

  16. Identification of Switched MIMO ARX models Laurent Bako1

    E-Print Network [OSTI]

    sys- tems modeling and control [?]. In addition, the increasing emergence of discrete event systems in many modern applications has encouraged the modeling, the estimation and the analysis of such systems adopt a polynomial decoupling representation for han- dling switched systems with multiple inputs

  17. Learning Quantitative Knowledge for Multiagent Coordination David Jensen, Michael Atighetchi, Regis Vincent, Victor Lesser

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    of these interrelation- ships can help coordinate agents | preventing con- icts and exploiting bene cial relationships among ac- tions. We explore three interlocking methods that learn quantitative knowledge of such non. Introduction A major challenge of designing e ective multiagent sys- tems is managing non-local e ects

  18. Learning Quantitative Knowledge for Multiagent Coordination David Jensen, Michael Atighetchi, R egis Vincent, Victor Lesser

    E-Print Network [OSTI]

    Southern California, University of

    of these interrelation- ships can help coordinate agents | preventing con- icts and exploiting bene cial relationships among ac- tions. We explore three interlocking methods that learn quantitative knowledge of such non. Introduction A major challenge of designing e ective multiagent sys- tems is managing non-local e ects

  19. Learning Quantitative Knowledge for Multiagent Coordination David Jensen, Michael Atighetchi, R'egis Vincent, Victor Lesser

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    of these interrelation­ ships can help coordinate agents --- preventing con­ flicts and exploiting beneficial of such non­local effects in TAEMS, a well­developed framework for multiagent coordination. The surprising knowledge. Introduction A major challenge of designing effective multiagent sys­ tems is managing non

  20. he increasing frequency of detection of the widely used gasoline additive methyl tert-

    E-Print Network [OSTI]

    ether (MTBE) in both ground and sur- face waters is receiving much attention from the media and 10% of community drinking water sup- plies in high MTBE use areas show at least detectable concentrations of MTBE, and about 1% of those sys- tems are characterized by levels of this compound

  1. Supervisory Control Strategies for Enhancing System Security and Privacy Christoforos N. Hadjicostis

    E-Print Network [OSTI]

    Hadjicostis, Christoforos

    cyber-infrastructures (ranging from defense and banking to health care and power distribution sys- temsSupervisory Control Strategies for Enhancing System Security and Privacy Christoforos N. Hadjicostis Abstract-- Enhancing the security and reliability of auto- mated systems that control vital

  2. Performance Evaluation of an Authentication Mechanism in Time-Triggered Networked Control

    E-Print Network [OSTI]

    Koutsoukos, Xenofon D.

    be in the order of 10-9 failures/hour [1]. Cyber-Physical Systems require distributed architectures to support control sys- tems is to ensure the confidentiality and integrity of the message in order to secure the communication and prevent attackers or in- truders from compromising the system. However, security mecha- nisms

  3. Seamlessly Integrating Software & Hardware Modelling for Large-Scale Systems

    E-Print Network [OSTI]

    Zhao, Yuxiao

    Engineering, with the math- ematical modelling approach, Modelica, to address the software/hardware integration problem. The environment and hardware components are modelled in Modelica and integrated software-hardware codesign, large-scale sys- tems, Behavior Engineering, Modelica. 1. Introduction

  4. CRBTree: An Efficient Indexing Scheme for RangeAggregate Queries ?

    E-Print Network [OSTI]

    Arge, Lars

    database requires efficient exter nal memory (secondary storage) support for its language features. Range processing (OLAP), spatial databases such as geographic information sys tems (GIS), and several other grants ITR--333--1050, EIA--9870724, EIA--997287, and CCR--9732787, and by a grant from the U

  5. IBRAC: Image-Based Rendering Acceleration and Compression Ilmi Yoon and Ulrich Neumann

    E-Print Network [OSTI]

    Shahabi, Cyrus

    IBRAC: Image-Based Rendering Acceleration and Compression Ilmi Yoon and Ulrich Neumann Computer ABSTRACT This paper presents an image-based rendering technique that has several benefits to remote or web-based rendering sys- tems. It adapts an image-based rendering acceleration method to the direct rendering

  6. ModelPlex: Verified Runtime Validation of Verified Cyber-Physical System Models

    E-Print Network [OSTI]

    -physical systems (CPS) safe. Formal methods make strong guarantees about the system behavior if accurate models of the sys- tem can be obtained, including models of the controller and of the physical dynamics. In CPS, models are essential; but any model we could possibly build necessarily deviates from the real world

  7. n commenting on the recent chess match between Garry Kasparov and Deep Blue, IBM

    E-Print Network [OSTI]

    Munakata, Toshinori

    OnSite Viewpoint n commenting on the recent chess match between Garry Kasparov and Deep Blue, IBM literature even proclaimed, "The power behind Deep Blue is an IBM RS/6000 SP sys- tem finely tuned a somewhat different view of Deep Blue's prowess and its implica- tions for computing in general and AI

  8. In-Vivo Storage System Development Noah Watkins1

    E-Print Network [OSTI]

    Maltzahn, Carlos

    In-Vivo Storage System Development Noah Watkins1 , Carlos Maltzahn1 , Scott Brandt1 , Ian Pye3. The emergence of high-performance open-source storage sys- tems is allowing application and middleware developers to consider non- standard storage system interfaces. In contrast to the practice of virtually

  9. ELSEVIER Physica C 341-348 (2000) 893-894 www.elsevier.nl/Iocate/physc

    E-Print Network [OSTI]

    Ramsak, Anton

    2000-01-01T23:59:59.000Z

    . Numerical results axe additionally compared with the self consistent Born approximation (SCBA) results the SCBA result on large lattice obtained as a sum of Af-(w) and Af+(w), presented below. (b) Hole-like Af-(w) spectra. The SCBA result is obtained on a N = 64 x 64 cluster and for undoped reference sys- tem. Note

  10. The Kalman-Bucy Filter for Integrable Levy Processes with Infinite Second Moment

    E-Print Network [OSTI]

    Applebaum, David

    The Kalman-Bucy Filter for Integrable Levy Processes with Infinite Second Moment David Applebaum Kingdom. Abstract We extend the Kalman-Bucy filter to the case where both the sys- tem and observation jumps. 1 Introduction The Kalman-Bucy filter is the continuous time version of the famous Kalman filter

  11. The Kalman-Bucy Filter for Integrable Levy Processes With Infinite Second Moment

    E-Print Network [OSTI]

    Applebaum, David

    The Kalman-Bucy Filter for Integrable Levy Processes With Infinite Second Moment David Applebaum Kingdom. Abstract We extend the Kalman-Bucy filter to the case where both the sys- tem and observation. The key technique used is approximation by pro- cesses having bounded jumps. 1 Introduction The Kalman

  12. Formal Methods for the Specification and Design of RealTime Safety Critical

    E-Print Network [OSTI]

    Ostroff, Jonathan S.

    Formal Methods for the Specification and Design of RealTime Safety Critical Systems \\Lambda Jonathan S. Ostroff April, 1992 Abstract Safety critical computers increasingly affect nearly every aspect, designing and verifying realtime sys tems, so as to improve their safety and reliability. \\Lambda

  13. DISTRIBUTED REAL-TIME TASK MONITORING IN THE SAFETY-CRITICAL SYSTEM MELODY

    E-Print Network [OSTI]

    Wedde, Horst F.

    -critical systems (such as nuclear power plants, distributed cooperation of autonomous robots in Outer Space that are typi- cally unpredictable, a very high amount of adaptability of sys- tem functions is demanded. SafetyDISTRIBUTED REAL-TIME TASK MONITORING IN THE SAFETY-CRITICAL SYSTEM MELODY Horst F. Wedde, Jon A

  14. JOURNAL OF MICROELECTROMECHANICAL SYSTEMS, VOL. 14, NO. 4, AUGUST 2005 707 A Single-Crystal Silicon Symmetrical and Decoupled

    E-Print Network [OSTI]

    Akin, Tayfun

    Optical cross-connect system based on the White cell and three-state microelectromechanical system on the optical White cell and a three-state microelectromechanical system tilting mirror array. We describe. Here, however, we are interested in free-space sys- tems using microelectromechanical systems (MEMSs

  15. IBM Systems and Technology IBM System x3850 X5

    E-Print Network [OSTI]

    and larger virtual machines per server and lower licensing costs, while achieving greater business total cost Keep consolidated workloads up and running with mainframe-inspired reliability Easy-to-own, simplified power and sys- tems management with an energy-smart design and remote access Tailored to your

  16. North American Power Symposium NAPS, San Luis Obispo, California, October 1999. EMTP Studies of UPFC Power Oscillation Damping

    E-Print Network [OSTI]

    Caizares, Claudio A.

    transmission sys- tems, rather then on building new transmission lines and power stations, for economical and reactive power on transmission lines to allow for their secure loading, to full thermal capability in some . The SSSC, a substitute for the TCSC, can be used to control the power ow in a transmission line by changing

  17. Towards Data Mining Benchmarking: A Test Bed for Performance Study of Frequent Pattern Mining

    E-Print Network [OSTI]

    Pei, Jian

    Towards Data Mining Benchmarking: A Test Bed for Performance Study of Frequent Pattern Mining Jian, object-relational DBMS, data warehouse sys- tems, etc. We believe that benchmarking data mining mining systems as well. Frequent pattern mining forms a core component in mining associations

  18. Finding the creatures of habit; Clustering households based on their flexibility in using electricity

    E-Print Network [OSTI]

    Aickelin, Uwe

    electricity Ian Dent, Uwe Aickelin and Tom Rodden School of Computer Science University of Nottingham, UK, AB15 8QH tony.craig@hutton.ac.uk ABSTRACT Changes in the UK electricity market, particularly to change households' electricity usage patterns for the benefit of the overall sys- tem. Users show

  19. Cost-effective Safety and Fault Localization using Distributed Temporal Redundancy

    E-Print Network [OSTI]

    Skadron, Kevin

    responsible for the control of safety-critical sys- tems in a variety of market segments, such as medical of reliability challenges: the rate of single-event upsets due to radiation, for example, is expected to increase]. To ensure that no harm comes to human users when such errors occur, faults must be quickly detected

  20. CX: A Scalable, Robust Network for Parallel Peter Cappello and Dimitris Mourloukos

    E-Print Network [OSTI]

    Cappello, Peter

    CX: A Scalable, Robust Network for Parallel Computing Peter Cappello and Dimitris Mourloukos}@cs.ucsb.edu Abstract CX, a network­based computational exchange, is presented. The sys­ tem's design integrates failures. Tasks are distributed throughout the server network via a simple ``di#usion'' process. CX

  1. CX: A Scalable, Robust Network for Parallel Peter Cappello and Dimitris Mourloukos

    E-Print Network [OSTI]

    Cappello, Peter

    CX: A Scalable, Robust Network for Parallel Computing Peter Cappello and Dimitris Mourloukos}@cs.ucsb.edu Abstract CX, a network-based computational exchange, is presented. The sys- tem's design integrates failures. Tasks are distributed throughout the server network via a simple "diffusion" process. CX

  2. Developing Web Services in a Computational Grid Environment

    E-Print Network [OSTI]

    Yang, Xiaobo; Hayes, Mark; Usher, Andrew; Spivack, Mark

    2008-06-26T23:59:59.000Z

    , usually runs on a backend high performance computing facility (HPCF). Code B is suitable for running on a normal Linux cluster. Cluster Cluster frontend HPCF HPCF frontend Client SOAP SOAPSOAP Figure 4. Architecture of a Web service sys tem. Figure 4...

  3. Inventory management with dynamic Bayesian network software systems

    E-Print Network [OSTI]

    Barker, Jon

    Inventory management with dynamic Bayesian network software systems Mark Taylor1 and Charles Fox2 1.fox@sheffield.ac.uk Abstract. Inventory management at a single or multiple levels of a supply chain is usually performed-the-shelf graphical software systems. We show how such sys- tems may be deployed to model a simple inventory problem

  4. Software Tools for Technology Transfer manuscript No. (will be inserted by the editor)

    E-Print Network [OSTI]

    Cleaveland, Rance

    , is part of a US Army-developed automated infusion device for treating blood loss experienced by combatants pressure by infusing blood as needed, based on blood-pressure data the CARA system collects. The control Institute for Research (WRAIR), the sys- tem is intended to infuse fluids into patients who are in dan- ger

  5. Subscriber access provided by TEL AVIV UNIV (AO) ACS Nano is published by the American Chemical Society. 1155 Sixteenth Street

    E-Print Network [OSTI]

    Hod, Oded

    ordering in graphene-based sys- tems is related to edge states, with distinct elec- tronic states with spin po- larization localized to ex- posed edges when graphene sheets are cut along the zigzag axis. The bipartite hexagonal structure of graphene appears to impart thinly cut nanoribbons with long

  6. OASIS: Anycast for Any Service Michael J. Freedman, Karthik Lakshminarayanan, David Mazires

    E-Print Network [OSTI]

    Gummadi, Ramakrishna

    OASIS: Anycast for Any Service Michael J. Freedman, Karthik Lakshminarayanan, David Mazires New York University, U.C. Berkeley, Stanford University http://www.coralcdn.org/oasis/ Abstract Global OASIS, a distributed anycast sys- tem that addresses these challenges. Since OASIS is shared across many

  7. Optimal Supervisory Control of Discrete Event Dynamical Systems 1,2

    E-Print Network [OSTI]

    Kumar, Ratnesh

    Optimal Supervisory Control of Discrete Event Dynamical Systems 1,2 Ratnesh Kumar Department;Abstract We formalize the notion of optimal supervisory control of discrete event dynamical sys- tems (DEDS some undesired states, or not reaching some desired states in the controlled system. The control

  8. Deep Web Integration with VisQI Thomas Kabisch

    E-Print Network [OSTI]

    Meng, Weiyi

    Deep Web Integration with VisQI Thomas Kabisch Humboldt-Universitat zu Berlin Berlin, Germany of Deep Web sources. Building sys- tems which would be able to automatically use all or a large fraction of all Deep Web sources of a given domain, such as airline reservation in the USA, would offer great

  9. A GLOBAL ROAD SCENE ANALYSIS SYSTEM FOR AUTONOMOUS VEHICLES

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    to the hydraulic steering system ofthe car. To control such a model,a tech- nique of pole assignment embedded, Real time image processing, Vehicle modelling, Adaptive control. 1. HIGH SPEED VEHICLE GUIDANCE with an additional device connected to its steering sys- tem. This device is an input allowing a velocity control

  10. KILLER WHALE, Orcinus orca, SOUNDS REPEL WHITE WHALES, D elphinapterus leucas

    E-Print Network [OSTI]

    to the sounds. Theil' transmitting sys- tem was similar to the high-power system de- scribed here which we used. While in the river the whales feed on salmon smolt migrating down to the sea. Transmission of killer for underwater sound transmission. Most other workers at- tempting to influence the movement of wild whales

  11. A scalable silicon microreactor for preferential CO oxidation: performance comparison with a tubular

    E-Print Network [OSTI]

    Gulari, Erdogan

    the current internal combustion engine sys- tem. One of the main challenges in the development of hydrogen,* a Department of Chemical Engineering, The University of Michigan, Ann Arbor, MI 48109, USA b Department of Mechanical Engineering, The University of Michigan, Ann Arbor, MI 48109, USA Received 16 February 2004

  12. IBM Research Every day we learn that the systems on our planet are

    E-Print Network [OSTI]

    IBM Research #12;Every day we learn that the systems on our planet are more interrelated than THE DIRECTOR research goal. From studying solar energy and water desalinization in the deserts of the Middle tomorrow's computing sys tems may solve complex problems in real time while requiring less energy than

  13. 48669Federal Register / Vol. 65, No. 154 / Wednesday, August 9, 2000 / Proposed Rules Type of motor vehicle

    E-Print Network [OSTI]

    vehicle Service Brake Systems Emergency brake sys- tems: applica- tion and brak- ing distance in feet from initial speed of 20 mph Braking force as a percent- age of gross vehicle or combination weight mph B. Property-carrying vehicles: (1) Single unit vehicles having a manufacturer's GVWR of 10

  14. Dynamics of Subsurface and Surface Chemisorption for B, C, and N on Gaas and Inp

    E-Print Network [OSTI]

    MENON, M.; Allen, Roland E.

    1991-01-01T23:59:59.000Z

    on GaAs. H=HO+ V, @11 0 0 0 (2.7) (2.8) The Green's function for this system is G =(el ?H ) (2.9) Let H be the 1V XX Hamiltonian matrix for a large sys- tem (N~ ~ here). We suppose that H differs from an unperturbed Hamiltonian Ho only in some...

  15. Minimizing Building Electricity Costs in a Dynamic Power Market: Algorithms and Impact on Energy Conservation

    E-Print Network [OSTI]

    Wang, Dan

    property of thermal storage, i.e., the energy will not immediately dissipate from thermal air/water. Intuitively, with storage, the energy can be "stored" in the thermal sys- tem, making it possible to purchase in a dynamic power market. The thermal system has a special property of thermal storage, i.e., the energy

  16. Maximizing Efficiency of Solar-Powered Systems by Load Matching

    E-Print Network [OSTI]

    Shinozuka, Masanobu

    energy. However, solar powered sys- tems must also consider the output level of the solar panel for power be counterproductive. Another problem that is of particular importance to solar pan- els is load matching. Solar panels is around 0.7­1.2, solar panels have a much larger Ri value as a function of the solar output and current

  17. Model-driven Server Allocation in Distributed Enterprise Systems James W.J. Xue, Adam P. Chester, Ligang He and Stephen A. Jarvis

    E-Print Network [OSTI]

    Jarvis, Stephen

    Model-driven Server Allocation in Distributed Enterprise Systems James W.J. Xue, Adam P. Chester (ISPs) usually use several server pools to host different web applications, to ensure smooth sys- tem, it is desirable that servers should be able to switch between pools to opti- mise resource usage and maximise

  18. Structure and dynamics affect the controllability of complex systems: a Preliminary Study

    E-Print Network [OSTI]

    Menczer, Filippo

    well does network structure represent the multivariate dynamics of the underlying complex sys- tem- linear multivariate systems. Their organization and behavior are commonly modeled by representations the structure or or- ganization of complex systems. The simplest way to study multi-variate dynamics

  19. On the Scalability of Monitoring and Debugging Distributed Computations: Vector-Clock Size

    E-Print Network [OSTI]

    Waterloo, University of

    1: Sample POET Process-Time Diagram that provides such a display is POET [29, 18]. An example of a POET display, presenting a portion of a point-to-point broadcast, is shown in Figure 1. There is a significant limitation in POET and in any similar system. Such sys- tems are limited to displaying only

  20. On the Scalability of Monitoring and Debugging Distributed Computations: VectorClock Size

    E-Print Network [OSTI]

    Ward, Paul A.S.

    1: Sample POET Process­Time Diagram that provides such a display is POET [29, 18]. An example of a POET display, presenting a portion of a point­to­point broadcast, is shown in Figure 1. There is a significant limitation in POET and in any similar system. Such sys­ tems are limited to displaying only

  1. BUNCH COMPRESSOR II AT THE TESLA TEST FACILITY M. Geitz, A. Kabel

    E-Print Network [OSTI]

    BUNCH COMPRESSOR II AT THE TESLA TEST FACILITY M. Geitz, A. Kabel , G. Schmidt, H. Weise Deutsches the required peak current. The second stage of the bunch compression sys- tem, bunch compressor II, has been taken into operation recently. We describe design and instrumentation of the bunch compressor II

  2. and privatize the THSR project. Privatization was a way to introduce the private owner's financial and management capabilities into a tra-

    E-Print Network [OSTI]

    Barkan, Christopher P.L.

    . The construction of a high-capacity HSR sys- tem to serve the country's transportation needs became the only viable consumption, and low levels of pollution, high-speed rail (HSR) is emerging as an attractive transportation-sponsored HSR project such as KHSR could successfully promote the national HSR industry. With the world's oil

  3. Algorithms for Temperature-Aware Task Scheduling in Microprocessor Systems

    E-Print Network [OSTI]

    Chrobak, Marek

    to minimize the overall energy usage in this model becomes a challenging optimization problem. Models have, the introduction of #12;battery-operated laptop computers and sensor systems highlighted the related issue of controlling the energy consumption. Most of the initial work on these problems was hardware and sys- tems

  4. IEEE TRANSACTIONS ON ENERGY CONVERSION, VOL. 23, NO. 2, JUNE 2008 551 Sliding Mode Power Control of Variable-Speed Wind

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    in variable-speed wind energy conversion sys- tems (VS-WECS). These systems have two operation regions de of Variable-Speed Wind Energy Conversion Systems Brice Beltran, Tarek Ahmed-Ali, and Mohamed El Hachemi (newton meter). Tg Generator torque in the rotor side (newton meter). Ths High-speed torque (newton meter

  5. A Functional Regression Approach for Prediction in a District-Heating System

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    A Functional Regression Approach for Prediction in a District-Heating System Aldo Goia Dipartimento in a district heating sys- tem. Our dataset consists of four separated periods, with 198 days each period and 24 load forecasting, district heat- ing system Introduction Among the activities of support

  6. Combining perceptually-motivated spectral shaping with loudness and duration modification for intelligibility enhancement of

    E-Print Network [OSTI]

    Edinburgh, University of

    for intelligibility enhancement of HMM-based synthetic speech in noise Cassia Valentini-Botinhao1 , Junichi Yamagishi1-in-noise intelligibility enhancement evaluation: the Hurricane Challenge. The sys- tem consists of a Text-To-Speech voice, this means speech intelligibility enhancement in which clean speech is modified so the subsequent mixture

  7. 76 August 2001/Vol. 44, No. 8 COMMUNICATIONS OF THE ACM A computer and network system must be protected

    E-Print Network [OSTI]

    Ye, Nong

    sys- tems, such as energy generation systems in nuclear power plants. Process control activities a variety of techniques for prevention, detection, isolation, assessment, reaction, and vulnerability state. Vulnerability testing looks for points (a weak pass- word, for example) of a computer and network

  8. Genetic Lateral and Amplitude Tuning with Rule Selection for Fuzzy Control of Heating,

    E-Print Network [OSTI]

    Granada, Universidad de

    and Air Conditioning Systems R. Alcala1 , J. Alcala-Fdez1 , F.J. Berlanga2 , M.J. Gacto1 , and F fuzzy logic controllers dedicated to the control of heating, ventilating and air conditioning sys- tems concerning energy performance and indoor comfort requirements. 1 Introduction Heating, Ventilating and Air

  9. Proceedings of the ASME 2013 International Mechanical Engineering Congress & Exposition November 15-21, 2013, San Diego, USA

    E-Print Network [OSTI]

    Dasgupta, Partha

    , ground- source heat pumps and so on). Various decision-making ca- pabilities at the Energy Management4]. Furthermore, adaptive automated daylighting control sys- tems have immense potential to significantly reduce- tion and heat recovery ventilation; the design of such buildings involve a number of advanced elements

  10. Limits on guiding center and gyrokinetic plasma models in 3D magnetic fields

    E-Print Network [OSTI]

    D field: magnetic field torsion and coordinate system twisting GC higher order validity and global, as seen when moving in that direction. Magnetic field torsion ^b ^b is the twisting of the field.) Torsion also introduces twisting of the local field-tied orthogonal coordinate sys- tem, R = (^e1)^e2

  11. Ribeirinhos slash-and-burn ( IRD / C. Couly) The Ribeirinhos live in the heart of Brazilian Amazon between the forest and the tranquil

    E-Print Network [OSTI]

    , indirectly led to deterioration of their farming sys- tem and traditional practices. Researchers from the IRD-sufficient in food. Good to know From a historical, ecological and socio-economic perspective, the National Forest, a particularly sensitive area subject to high anthropogenic and agricultural pressures for intensive cultivation

  12. Diversity of Life at the Geothermal Subsurface--Surface Interface: The Yellowstone Example

    E-Print Network [OSTI]

    to be the primary energy source for life in this geothermal sys- tem, the main organisms identified by phylotype energy source that drives primary productivity in this and potentially other geothermal ecosystemsDiversity of Life at the Geothermal Subsurface--Surface Interface: The Yellowstone Example

  13. A Multi-Commodity Flow Approach to Maximising Utility in Linked Market-Based Grids

    E-Print Network [OSTI]

    Melbourne, University of

    . We then obtain a utility-aware distributed algorithm that generates increased utility utility in linked market-driven distributed and Grid systems. In such sys- tems, users submit jobs through-based, utility driven distributed systems, where all participants selfishly attempt to max- imise their own gain

  14. Online Transmission Line Loadability Assessment Using Synchrophasor Measurements

    E-Print Network [OSTI]

    Liberzon, Daniel

    a stable operation. Transmission line loading limits are also essential to deter- mine locational marginal loading margins provide a useful metric to operate the power sys- tem to satisfy demands while ensuring prices in power markets. Therefore, the assessment of transmission line loadability under various

  15. JOURNAL OF LIGHTWAVE TECHNOLOGY, VOL. 27, NO. 8, APRIL 15, 2009 1027 Optical Under-Sampling and Reconstruction of

    E-Print Network [OSTI]

    Horowitz, Moshe

    --Multirate sampling (MRS), periodic nonuniform sampling (PNS). I. INTRODUCTION ELECTRONIC warfare is the systems approach to the exploitation and control of the electromagnetic spectrum [1]. Electronic warfare systems. Therefore, in electronic warfare sys- tems it is required to sample and reconstruct multiband sparse signals

  16. J Supercomput (2012) 60:165195 DOI 10.1007/s11227-010-0453-8

    E-Print Network [OSTI]

    Pompili, Dario

    , there is a need for re- alizing environment friendly computing systems that maximize energy and cooling efficiency consumption of current cooling sys- tems in datacenters, energy efficient and intelligent cooling solutions equipment to increase their efficiency. In conventional thermal management techniques, cooling systems

  17. 4 -Coastal Ocean Processes The Oregon Coastal Ocean: A Sink for Atmospheric CO

    E-Print Network [OSTI]

    Pierce, Stephen

    4 - Coastal Ocean Processes The Oregon Coastal Ocean: A Sink for Atmospheric CO 2 ? As part of the Coastal Ocean Processes (CoOP)-sponsored Coastal Ocean Advances in Shelf Transport project (COAST) we laboratory, we developed analytical sys- tems that were capable of measuring nutrient con- centrations and CO

  18. Department of Information Systems College of Computing Sciences

    E-Print Network [OSTI]

    Bieber, Michael

    TM Department of Information Systems College of Computing Sciences The Bachelor of Science.njit.edu/admissions/undergraduate/applying/index.php WHAT DEGREE PROGRAMS ARE AVAILABLE? Students may choose a bachelor of science in information sys- tems in the computing sciences, consisting of advanced state-of-the-art courses in information systems, information

  19. Toward a generic framework for ubiquitous system Amara Touil, Etienne Pardo, Jean Vareille, Philippe Le Parc

    E-Print Network [OSTI]

    Boyer, Edmond

    , for example, robot arms in factories, Heating Ventila- tion and Air-Conditioning (HVAC) systems for commercial to perform remote actions to control different sys- tems using networks, computers and software. Although the feasibility of remote operating, scientists are now facing a new challenge: transforming the dream of ubiquity

  20. Proceedings IEA Workshop Legionella

    E-Print Network [OSTI]

    be not less than 60°C. 95% of thermal Solar panels sys- tems are both for hot water and for water heating it is the heated water which is accumulated. There has not been any known case of Legionellosis in Thermal Solar of the workshop is to investigate the risk of bacterial growth in solar water heaters and the risk of Legionnaire

  1. Appendix A. Errata Appendix A. Errata A-3

    E-Print Network [OSTI]

    Pennycook, Steve

    -gas and scrubber system, which includes 3500 and 4500 areas= cell ventilation sys- tem, isotope solid-state ventilation system, 3025 and 3026 areas= cell ventilation system, 3042 ventila- tion system, and 3092 central airborne discharges at ORNL consist primarily of ventilation air from radioactively con- taminated

  2. Princeton//9813 C. Lu, K.T. McDonald and E.J. Prebys

    E-Print Network [OSTI]

    McDonald, Kirk

    in the near future. 4 References [1] C.M. Ankenbrandt et al., Ionization Cooling Research and DevelopmentPressure TPC for the Muon Cooling Experiment This document will present detailed specification for the Time Projection Chamber sys tem to be used in the Muon Cooling Experiment. This early version presents mainly

  3. Water conservation and reuse has become a major issue in aquacul-

    E-Print Network [OSTI]

    Watson, Craig A.

    Water conservation and reuse has become a major issue in aquacul- ture in recent years. Concern enhancing water circula- tion in ponds and developing intensive, recirculating tank sys- tems of water and lower invest- ment and production costs have contributed to the present expanse of pond

  4. Nonlinear Processes in Geophysics (2001) 8: 201209 Nonlinear Processes

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    of prediction of climate changes due to hu- man activity. All anthropogenic actions on the climate sys- tem Geophysical Society 2001 Climate model attractors: chaos, quasi-regularity and sensitivity to small, Russia Received: 6 July 2000 ­ Revised: 25 October 2000 ­ Accepted: 28 November 2000 Abstract

  5. Collaborative Estimation of Gradient Direction by a Formation of AUVs

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    underwater vehicles). The present paper proposes a distributed solution in which a group of vehicles and unmanned air vehicles (AUVs and UAVs) [6, 7]. Cooperative formation control and motion co- ordination have-agent systems [1, 2], flocking [3], distributed sensor networks [4, 5], and autonomous sys- tems as underwater

  6. An Overview of the Design of Distributed Oz Seif Haridi

    E-Print Network [OSTI]

    Haridi, Seif

    An Overview of the Design of Distributed Oz Seif Haridi Swedish Institute of Computer Science (SICS a design for a distributed programming sys tem, Distributed Oz, that abstracts away the network. While retaining their cen tralized semantics, they are extended with a distributed se mantics

  7. The Effectiveness of Application Permissions Adrienne Porter Felt

    E-Print Network [OSTI]

    Wagner, David

    . Time-of-use systems prompt users to approve permissions as needed by applications at runtime-time systems, this might alert some users to malware at installation; for time-of-use systems, this can prevent's declared privi- leges. This could also be true for a time-of-use sys- tem in which developers declare

  8. Uniformity: uncovering the frontier of parallelism

    E-Print Network [OSTI]

    Woods, Damien

    fruitfully explored using polynomial time (semi-)uniform families of membrane systems. However, when(logi n)) time when using a poly- nomial number of processors, that is they are efficiently parallelisable current results for active membrane sys- tems using uniformity below P. Many of the systems we consider

  9. Ris Energy Report 7 This Ris Energy Report, the seventh of a series that began

    E-Print Network [OSTI]

    #12;#12;#12;#12;#12;3 1 Ris Energy Report 7 This Ris Energy Report, the seventh of a series. This report presents state-of-the-art and development per- spectives for energy supply technologies, new energy sys- tems, end-use energy efficiency improvements and new pol- icy measures. It also includes

  10. Ris Report No. 286 J-Danish Atomic Energy Commission

    E-Print Network [OSTI]

    are added together with thermal scattering data. The applicability to light-water reactor sys- tems of the group cross sections produced is demonstrated by means of calculationally simple test examples. #12;ISBN. Data System Description g 3.1. The SIGMA MASTER TAPE 9 3.2. Resonance Treatment 9 3.3. Thermal

  11. DOI: 10.1002/cbic.200500261 Direct Conversion of Ethane to

    E-Print Network [OSTI]

    Arnold, Frances H.

    by a variety of transition metal catalysts, but these sys- tems produce mixtures containing significant amounts dioxygen from the air as the oxidant, and produce little or no hazardous waste. Biological systems have as propane.[810] Communication between the heme and reduc- tase domains of BM-3 is substrate

  12. 1 INTRODUCTION & IEC 61508 Safety instrumented systems (SIS) play a major part

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    1 INTRODUCTION & IEC 61508 Safety instrumented systems (SIS) play a major part in industrial risk electrical / electronic / pro- grammable electronic (E/E/PE) safety-related sys- tems, is the IEC 61508 (IEC, 2005a). The second edition will soon be adopted in 2009 (IEC, 2009). Objectives are to enable

  13. The Abstract Task Graph: A Methodology for Architecture-Independent Programming of Networked Sensor Systems

    E-Print Network [OSTI]

    Prasanna, Viktor K.

    Center 3333 Coyote Hill Road Palo Alto, CA 94304 USA jreich, larner @parc.com Abstract The Abstract Task-provided code that implements the actual information processing functions in the sys- tem. Appropriate numbers and network configuration, with each node incorporating the user-provided code, automatically gen- erated glue

  14. 718 IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY, VOL. 9, NO. 5, SEPTEMBER 2001 Reactive Power and Unbalance Compensation Using

    E-Print Network [OSTI]

    Stankoviæ, Aleksandar

    718 IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY, VOL. 9, NO. 5, SEPTEMBER 2001 Reactive Power as reactive power and unbalance compensators, e.g., Static synchronous compensator (STATCOM). The approach practice. Index Terms--Active filters, adaptive control, dissipative sys- tems, nonlinear systems, reactive

  15. Reactive Protocols for Aircraft Electric Power Distribution Huan Xu, Ufuk Topcu, and Richard M. Murray

    E-Print Network [OSTI]

    Murray, Richard M.

    Reactive Protocols for Aircraft Electric Power Distribution Huan Xu, Ufuk Topcu, and Richard M. Murray Abstract-- The increasing complexity of electric power sys- tems leads to integration and verification challenges. We consider the problem of designing a control protocol for the aircraft electric

  16. Phase distribution and phase correlation of financial time series Ming-Chya Wu,1,

    E-Print Network [OSTI]

    to determine the best price for a given item. Previous studies of financial sys- tems are usually based analysis in statistical mechanics is shown to be ap- plicable in the studies of market systems 2 are investigated based on the Dow Jones Industry Average and NASDAQ 10-min intraday data for a period from 1 Aug

  17. Software Controlled Power Management Yung-Hsiang Lu, Tajana Simunic, Giovanni De Micheli

    E-Print Network [OSTI]

    Simunic, Tajana

    Software Controlled Power Management Yung-Hsiang Lu, Tajana Simunic, Giovanni De Micheli Computer consumption is critical in many sys- tem designs. Dynamic power management is an effec- tive approach to decrease power without significantly degrading performance. Power management decisions can be implemented

  18. A Probabilistic Active Knowledge Base Architecture for Observational Data Sources

    E-Print Network [OSTI]

    Hazas, Mike

    a decision support system to manage environment and urban water sys- tems [1]. User objectives with new urban development supporting the concept of water sensitive urban design The project parameters that the management system must support are: · Quantify the impact of current and historical land uses causing

  19. Employment and program opportunities are offered to all people regardless of race, color, national origin, sex, age, or disability. North Carolina State University, North CarolinaA&T State University, U.S. Department of Agriculture, and local governments

    E-Print Network [OSTI]

    Hunt, William F.

    on the application of stormwater best management practices (BMPs) as a means to improve stormwater runoff quality (U Elimination Sys- tem (NPDES) Storm Water Program to focus on improving stormwater quality. As a result of the publication of the Phase I and Phase II Rules of the NPDES Storm Water Program, more emphasis has been placed

  20. DOI 10.1007/s11276-006-0724-8 Relay sensor placement in wireless sensor networks

    E-Print Network [OSTI]

    Wang, Lusheng

    DOI 10.1007/s11276-006-0724-8 Relay sensor placement in wireless sensor networks Xiuzhen Cheng Sensor Networks (WSNs) are ad hoc multihop sys- tems containing sensors connected by wireless links sensor net- works. In our study, this problem is modelled by a NP-hard network optimization problem named

  1. Diurnal variability of upper ocean temperatures from microwave satellite measurements and Argo profiles

    E-Print Network [OSTI]

    Gille, Sarah T.

    measurements. [3] Satellites measure SST at the surface of the ocean. Infrared satellite sensors measure. Data pairs with time separations of up to 3 h are used to evaluate systematic differences between a net impact on the climate sys- tem. The objective of this study is to evaluate the character

  2. GIDL: GENERALIZED INTERFERENCE DETECTION AND LOCALIZATION SYSTEM

    E-Print Network [OSTI]

    Stanford University

    Augmentation Sys- tem (WAAS) are being developed by the U.S. Federal Aviation Administration (FAA) to provide of the Federal Aviation Administration. I am very grateful for this support. Without it this project proba- bly locate interference sources. The GIDL System has been successfully demonstrated to the Federal Aviation

  3. 1 INTRODUCTION One of the most important objectives for the main-

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    : The requirement of equipment improvement in order to satisfy the safety and reliability of sys- tem motivates. Thanks to these models, the managers can decide the best time for replacement investment of equipment of the equipment in the re- placement problem under technological develop- ment. We construct a model that allows

  4. Monitoring the coastal ocean surface -The poten-tial use of HF radar for the design and operational

    E-Print Network [OSTI]

    Wyatt, Lucy

    is needed when deciding where to locate and how to esti- mate the efficiency of a wave or tidal stream power cases these needs are being met by single point in situ measurement sys- tems for example wave buoys this trial for 5- 9th April 2005 measured at the location of the buoy. This was the last major storm (a low

  5. MECHANICS AND NONLINEAR CONTROL: MAKING UNDERWATER VEHICLES

    E-Print Network [OSTI]

    Leonard, Naomi

    which pro vide powerful means to understand and describe mechanical system behavior. Methods incorporat performance and efficient use of onboard power. We highlight the underwater vehicle control sys tem both torques that mimic the stabilizing moment associated with gravitational and buoy ant forces, using

  6. Monte Carlo algorithms for charged lattice gases L. Levrel and A. C. Maggs

    E-Print Network [OSTI]

    Maggs, Anthony

    the Coulombic in- teraction. DNA, proteins, polyelectrolytes, colloids and even water are all structured], the thermodynamical study of charged sys- tems does not require instantaneous Coulombic interac- tions: The free energy is also correctly sampled when only Gauss' law div E = / is imposed on the electric field

  7. Formation and Decay of Toroidal and Bubble Nuclei and the Nuclear-Equation of State

    E-Print Network [OSTI]

    Xu, HM; Natowitz, J. B.; Gagliardi, Carl A.; Tribble, Robert E.; Wong, C. Y.; Lynch, W. G.

    1993-01-01T23:59:59.000Z

    by the U.S. DOE under Grant No. DE-FG05-86ER40256 and Contract No. DE-AC- 05-84OR21400 managed by Martin Marietta Energy Sys- tems, Inc, the Robert A. Welch Foundation, and the NSF under Grant No. PHY-89-13815. W.G.I . acknowledges the financial...

  8. Leading proton production in deep inelastic scattering at HERA

    E-Print Network [OSTI]

    Leading proton production in deep inelastic 1 scattering at HERA 2 ZEUS Collaboration 3 Draft, with a #28;nal-state proton carrying a large fraction of the incoming proton energy, x L > 0 photon virtualities Q 2 > 3 GeV 2 and mass of the photon-proton sys- tem 45

  9. Mapping the Seafloor American Samoa

    E-Print Network [OSTI]

    Wright, Dawn Jeannine

    -foot survey boat. The sonar sys- tem operates at an acoustic frequency of 300 kHz, fanning out as many tanker that exploded and sank in the harbor in 1949, and may still be a source of water pollution (see

  10. August 2003 IT SECURITY METRICS

    E-Print Network [OSTI]

    August 2003 IT SECURITY METRICS Elizabeth B. Lennon, Editor Information Technology Laboratory approach to measuring information security. Evaluating security at the sys tem level, IT security metrics and techniques contained in NIST SP 800-26, Security Self-Assessment Guide for Information Technology Systems

  11. WINTER 2005 ISSUE 1, VOLUME 9 Competing in the

    E-Print Network [OSTI]

    Yang, Eui-Hyeok

    , for they exemplify so well what the Alliance offers: the sharing of best practices by leading-edge business and labor markets, financial sys- tems, and demand and supply structures are new, relatively unknown of networks of information which enable localized decision-making and response, are appropriate adaptive

  12. Trading Functionality for Power within Applications Melanie Kambadur

    E-Print Network [OSTI]

    Trading Functionality for Power within Applications Melanie Kambadur Columbia University melanie down a program, so they must err on the side of caution when trading performance for power. Compounding application to trade performance for power, it may not be for another, preventing the sys- tem from taking

  13. Distributed Transactions in a Mobile Computing Vivek R. Narasayya

    E-Print Network [OSTI]

    El-Ansary, Sameh

    Introduction Mobile computing technology has produced a variety of devices ranging from simple pagers to the unique characteristics of mobile hardware and wireless technology [1] One class of mobile devices in data management for mobile computing sys tems are those that are arise because the mobile devices move

  14. Numerical Verification and Experimental Validation of Sliding Mode Control Design for

    E-Print Network [OSTI]

    Kearfott, R. Baker

    -temperature solid oxide fuel cell systems (SOFC sys- tems) can be described mainly by their thermal, fluidic Thermal SOFC Models Andreas Rauh, Luise Senkel, Thomas Dotschel , Harald Aschemann Chair of Mechatronics@inf.uni-due.de Abstract The design of reliable and robust control strategies for the automatized operation of SOFC systems

  15. Draft Genome Sequence of Methylomicrobium buryatense Strain 5G, a Haloalkaline-Tolerant Methanotrophic Bacterium

    E-Print Network [OSTI]

    Boyer, Edmond

    buryatense strain 5G on methane makes it an attractive sys- tem for CH4-based biocatalysis. Here we present of the core pathways for the production of valuable chemicals from methane. Received 23 January 2013 Accepted of Sciences, Pushchino, Russiaa; Department of Chemical Engineering, University of Washington, Seattle

  16. Online Strategies for High-Performance Power-Aware Thread Execution on Emerging Multiprocessors

    E-Print Network [OSTI]

    Freeh, Vincent

    and component density of emerging su- percomputers pose a hard requirement for power-aware sys- tem design PowerEdge 6650 with Intel Xeon HT processors. The high- lighted area indicates opportunitiesOnline Strategies for High-Performance Power-Aware Thread Execution on Emerging Multiprocessors

  17. Stochastic Information Management in Smart Grid Hao Liang, Member, IEEE, Amit Kumar Tamang, Weihua Zhuang, Fellow, IEEE, and

    E-Print Network [OSTI]

    Zhuang, Weihua

    of renewable energy sources, energy storage devices, demand side management (DSM) tools, and electric vehicles research issues are identified. Index Terms--Demand side management, electric power sys- tem, electric and will continue to participate in the demand side management (DSM) programs which provide incentives via energy

  18. Proceedings of IMECE '03 2003 ASME International Mechanical Engineering Congress and Exposition

    E-Print Network [OSTI]

    Shaver, Gregory M.

    November 15-21, 2003, Washington, D.C. USA IMECE2003-41966 CYCLE-TO-CYCLE CONTROL OF HCCI ENGINES Gregory M Compression Ignition (HCCI) represents a promising combustion strategy for future engines. When achieved by rein- ducting exhaust gas with a variable valve actuation (VVA) sys- tem, however, HCCI possesses

  19. International Journal of Modern Physics D, c World Scientific Publishing Company

    E-Print Network [OSTI]

    to be experimentally determined. When computing the output power spectrum density (PSD) due to the thermal noise- Kolmogorov (WK) filters, both a model for the power spectrum density (PSD) of the noise and a signal template), the transfer function of the sys- tem is proportional to that of a harmonic oscillator, namely 2 - i Qk k - 2 k

  20. Dynamically Configurable Distributed Objects Michael J. Lewis and Andrew S. Grimshaw

    E-Print Network [OSTI]

    Humphrey, Marty

    the objects may contain bugs, they may cease to fit their changing environment, or users' requirements may because objects may con- tain bugs, they may cease to fit their changing environment, and users object computing sys- tems, implementations are typically static monolithic binary executables