National Library of Energy BETA

Sample records for of fi ce

  1. UNIVERSITY OF CALGARY Integration of WiFi and MEMS Sensors for Indoor Navigation

    E-Print Network [OSTI]

    Calgary, University of

    UNIVERSITY OF CALGARY Integration of WiFi and MEMS Sensors for Indoor Navigation by Yuan Zhuang of MEMS sensors and WiFi offer an efficient integration for indoor navigation applications. Two automatic-coupled) integration and TC (Tightly-coupled) integration are implemented for WiFi and MEMS sensors to further limit

  2. College of Engineering CE Civil Engineering

    E-Print Network [OSTI]

    MacAdam, Keith

    College of Engineering CE Civil Engineering KEY: # = new course * = course changed = course.Lecture,twohours;laboratory,fourhoursperweek.Prereqorcoreq:MA113orconsentofinstructor. CE 120 INTRODUCTION TO CIVIL ENGINEERING. (1) An introduction to the civil engineering profession and the use of computer hardware and software in CE systems analysis and design

  3. Performance Analysis of Periodic Busy Tones Protecting a ZigBee Network from Wi-Fi

    E-Print Network [OSTI]

    Bahk, Saewoong

    Performance Analysis of Periodic Busy Tones Protecting a ZigBee Network from Wi-Fi Interruption--Generating a busy tone is known as a good solution that enables a ZigBee network to coexist with any Wi-Fi network in the same ISM band. To generate a busy tone, ZigBee networks need to deploy a signaler that transmits

  4. Exposure assessment of Electromagnetic Fields from Wireless Computer Networks (Wi-Fi); Phase 1 Laboratory Measurements

    E-Print Network [OSTI]

    Haddadi, Hamed

    Exposure assessment of Electromagnetic Fields from Wireless Computer Networks (Wi-Fi); Phase 1 networks, the most popular Wi-Fi devices used in the schools were identified. The regulatory standards bisecting the screen and keyboard. The maximum electric field strength recorded at 1 m varied from 719 mVm-1

  5. Thermoelectric Couple Demonstration of (In, Ce)-based Skutterudite...

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

    Couple Demonstration of (In, Ce)-based Skutterudite Materials for Automotive Energy Recovery Thermoelectric Couple Demonstration of (In, Ce)-based Skutterudite Materials for...

  6. European Mathematical Society Department of Mathematics and Statistics. P.O.Box 68, FI-00014 University of Helsinki, Finland

    E-Print Network [OSTI]

    University of Helsinki, Finland Fax. +358-9-1915 1400 Email: ems-office@helsinki.fi EMS Paper on Open Access of Mathematics and Statistics. P.O.Box 68, FI-00014 University of Helsinki, Finland Fax. +358-9-1915 1400 Email

  7. Mines&Guest&Wi+Fi&Access&Request& Page%1%of%2% % %%%%%Mines%Guest%Wi2Fi%Access%Request%(212FEB22014)%

    E-Print Network [OSTI]

    ,%also%known%as%CCIT,%a%provides%access%to%the% Mines%data%wireless%network%(Wi2Fi)%free%of%charge%and%password%that%can%be%given%to%the%guest.%% The%guest%will%need%to%connect%his%or%her%computer%to%the%`CSMguest'%wireless%network%activities%not%sponsored%by%Mines.%The%attached%form%should% be%used%to%request%network%access%for%guests%to%Mines.%Please%contact%CCIT's%networking

  8. The UNIVERSITY of NORTH CAROLINA at CHAPEL HILL DiFi: Fast 3D Distance Field Computation

    E-Print Network [OSTI]

    North Carolina at Chapel Hill, University of

    The UNIVERSITY of NORTH CAROLINA at CHAPEL HILL DiFi: Fast 3D Distance Field Computation using Graphics Hardware Avneesh Sud, Miguel A. Otaduy and Dinesh Manocha University of North Carolina at Chapel Hill http://gamma.cs.unc.edu/DiFi #12;The UNIVERSITY of NORTH CAROLINA at CHAPEL HILL Distance Field

  9. The UNIVERSITY of NORTH CAROLINA at CHAPEL HILL DiFi: Distance Fields -Fast

    E-Print Network [OSTI]

    North Carolina at Chapel Hill, University of

    The UNIVERSITY of NORTH CAROLINA at CHAPEL HILL DiFi: Distance Fields - Fast Computation Using UNIVERSITY of NORTH CAROLINA at CHAPEL HILL Distance Fields Distance Function For a site a scalar function f UNIVERSITY of NORTH CAROLINA at CHAPEL HILL What is a Voronoi Diagram? Given a collection of geometric

  10. Analysis of a Mixed-Use Urban WiFi Network: When Metropolitan becomes Neapolitan

    E-Print Network [OSTI]

    Snoeren, Alex

    spectrum. We study the usage of the Google WiFi network de- ployed in Mountain View, California, and find that copies are not made or distributed for profit or commercial advantage and that copies bear this notice- able outdoor wireless Internet service deployed in Mountain View, California, consisting of over 500

  11. UNITED STATES DEPARTMEl\\1T OF THE I NTERI OR FI SH AND WILDLIFE SERVICE

    E-Print Network [OSTI]

    UNITED STATES DEPARTMEl\\1T OF THE I NTERI OR FI SH AND WILDLIFE SERVICE Washington} D. C. } 20240. A simple penetrometer for the measurement of texture ch::mges in canned salmon. Gulf States shrimp cinnin on spoil age characteri stics. Equi pment Kote #8 - New hydraulically driven block speeds hauling crab -pot

  12. UNLV OFFICE OF INFORMATION TECHNOLOGY WIRELESS NETWORK (Wi-Fi) POLICY

    E-Print Network [OSTI]

    Walker, Lawrence R.

    UNLV OFFICE OF INFORMATION TECHNOLOGY WIRELESS NETWORK (Wi-Fi) POLICY RESPONsmLE ADMINISTRATOR: VICE PROVOST FOR INFORMATION TECHNOLOGY RESPONsmLE OFFICE(S): OFFICE OF THE VICE PROVOST FOR INFORMATION TECHNOLOGY ORIGINALLY IsSUED: OCTOBER 2012 APPROVALS: APPROVEDBY: \\

  13. BRSIC RECIPES COOKinG fiSH

    E-Print Network [OSTI]

    BRSIC RECIPES fOR COOKinG fiSH Fishery Leaflet 106 Fish anel Wi Iellife Se r v;ce po-)ited States Department of the Interior Wa s.hi ngton, D.C. #12;United States Department of the Interior, J. A. Fish~9~4~9 Introduction .· ... BASTC R~CIP~~ FOR GOOK IN~ FISH By Rose G. Kerr, Home Economist Branch of Commercial

  14. A NEW SUBCONTINUUM OF fiR \\ R ALAN DOW AND KLAAS PIETER HART

    E-Print Network [OSTI]

    Dow, Alan

    HART Abstract. We present a method for describing subcontinua of fiR \\ R. Th* *is. 1 #12; 2 ALAN DOW AND KLAAS PIETER HART 1. We refer to Hart [1992] for proofs and proper references. 1.1. The shift on !*. The shift oe

  15. A NEW SUBCONTINUUM OF fiRn R ALAN DOW AND KLAAS PIETER HART

    E-Print Network [OSTI]

    Dow, Alan

    A NEW SUBCONTINUUM OF fiRn R ALAN DOW AND KLAAS PIETER HART Abstract. We present a method, indecomposable continuum, shift on ! \\Lambda , Continuum Hypothesis. 1 #12; 2 ALAN DOW AND KLAAS PIETER HART 1 refer to Hart [1992] for proofs and proper references. 1.1. The shift on ! \\Lambda . The shift oe

  16. UNLV OFFICE OF INFORMATION TECHNOLOGY WIRELESS NETWORK (Wi-Fi) POLICY

    E-Print Network [OSTI]

    Hemmers, Oliver

    : Data and Information Security, Sections 2.1 and 3.3 http://system.nevada.edu/tasks/sites/Nshe/assets/File/BoardOfRegents/Procedures/P& GM%20CH14%20-%20DATA%20AND%20INFORMATION%20SECURITY.pdf CONTACTS Refer to the Office of InformationUNLV OFFICE OF INFORMATION TECHNOLOGY WIRELESS NETWORK (Wi-Fi) POLICY RESPONsmLE ADMINISTRATOR

  17. Role of Ce4+ in the scintillation mechanism of codoped Gd3Ga3Al2O12:Ce

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

    Wu, Yuntao; Meng, Fang; Li, Qi; Koschan, Merry; Melcher, Charles L.

    2014-10-17

    To control the time-response performance of widely used cerium-activated scintillators in cutting-edge medical-imaging devices, such as time-of-flight positron-emission tomography, a comprehensive understanding of the role of Ce valence states, especially stable Ce4+, in the scintillation mechanism is essential. However, despite some progress made recently, an understanding of the physical processes involving Ce4+ is still lacking. The aim of this work is to clarify the role of Ce4+ in scintillators by studying Ca2+ codoped Gd3Ga3Al2O12?Ce?(GGAG?Ce). By using a combination of optical absorption spectra and x-ray absorption near-edge spectroscopies, the correlation between Ca2+codoping content and the Ce4+ fraction is seen. The energy-levelmore »diagrams of Ce3+ and Ce4+ in the Gd3Ga3Al2O12 host are established by using theoretical and experimental methods, which indicate a higher position of the 5d1 state of Ce4+ in the forbidden gap in comparison to that of Ce3+. Underlying reasons for the decay-time acceleration resulting from Ca2+ codoping are revealed, and the physical processes of the Ce4+-emission model are proposed and further demonstrated by temperature-dependent radioluminescence spectra under x-ray excitation.« less

  18. School of Science http://sci.aalto.fi/en/

    E-Print Network [OSTI]

    Kaski, Samuel

    .e. verification in a setting where timing aspects of the verified system are accurately modeled. As a common theme of timed systems Title of the dissertation SMT-based Verification of Timed Systems and Software Contents of such areas include medical systems, airplanes, spacecraft, and control systems of nuclear power plants

  19. Table 1. Connection of Criterion 8 CE Outcomes to CE Courses (required, design elective, advanced elective)

    E-Print Network [OSTI]

    Chen, Xinzhong

    ENVE 4391 ENVE 4399 Water, wastewater, air, solid waste Physical and chemical treatment Advanced water Experiments, Interpret Data CE 2101 CE 3103 CE 3105 CE 3121 CE 3171 Construction materials behaviors Material codes and construction practices Design codes and construction practices Regulations, interaction

  20. OPET Organisations for the Promotion of Energy Technologies Contact: opet@tekes.fi www.tekes.fi/opet/

    E-Print Network [OSTI]

    . The power plant is combined condensing and CHP plant. The CFB boiler is manufactured by Kvaerner Pulping the planning of Alholmens Kraft new power plant (AK2) was started, the most important objectives were's district heating § exploitation of pulp and paper mill and saw mill by-products as fuel § optimisation

  1. FI L

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE-SessionsSouth DakotaRobbins and700, 1.Reports1E~ S·D3 WeldonY.B. H&OV112, m

  2. Abstract--The emergency of cloud computing and Generic Enablers (GEs) as the building blocks of Future Internet (FI)

    E-Print Network [OSTI]

    Petrakis, Euripides G.M.

    features that manage data and Internet of Things devices. To show a real life scenario, we present the use includes managing hardware, software, platforms as well as utilization of Internet of Things (IoT) devices of Future Internet (FI) applications highlights new requirements in the area of cloud services. Though, due

  3. Proactive Design of n-Type (In, Ce) Filled Skutterudites Enabling...

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

    n-Type (In, Ce) Filled Skutterudites Enabling High-Temperature Waste Heat Recovery Thermoelectric and structural properties of n-type (In, Ce) filled skutterudites including power...

  4. CANNED FI H RETAIL PRICE

    E-Print Network [OSTI]

    CANNED FI H RETAIL PRICE UNITED STATES DEPARTMENT OF THE I TERI R FISH AND WILDLIFE SERVICE BUREAU to obtain average retail prices for selected canned fish items. The retail prices as contained herein by the U. S . Department of Labor in order to provide information on price levels in different cities

  5. Effects of CeO2 Support Facets on VOx/CeO2 Catalysts in Oxidative Dehydrogenation of Methanol

    SciTech Connect (OSTI)

    Li, Yan; Wei, Zhehao; Gao, Feng; Kovarik, Libor; Peden, Charles HF; Wang, Yong

    2014-05-13

    CeO2 supports with dominating facets, i.e., low index (100), (110) and (111) facets, are prepared. The facet effects on the structure and catalytic performance of supported vanadium oxide catalysts are investigated using oxidative dehydrogenation of methanol as a model reaction. In the presence of mixed facets, Infrared and Raman characterizations demonstrate that surface vanadia species preferentially deposit on CeO2 (100) facets, presumably because of its higher surface energy. At the same surface vanadium densities, VOx species on (100) facets show better dispersion, followed by (110) and (111) facets. The VOx species on CeO2 nanorods with (110) and (100) facets display higher activity and lower apparent activation energies compared to that on CeO2 nanopolyhedras with dominating (111) facets and CeO2 nanocubes with dominating (100) facets. The higher activity for VOx/CeO2(110) might be related to the more abundant oxygen vacancies present on the (110) facets, evidenced from Raman spectroscopic measurements.

  6. Pricing WiFi at Starbucks Issues in Online Mechanism Eric J. Friedman

    E-Print Network [OSTI]

    Chen, Yiling

    Pricing WiFi at Starbucks ­ Issues in Online Mechanism Design Eric J. Friedman David C. Parkes motivating scenarios: WiFi at Starbucks: Consider the pricing of WiFi at a cafe1 with a limited number

  7. Fi-Nancy Management 333-333-3333

    E-Print Network [OSTI]

    Fi-Nancy Management 333-333-3333 www.LinkedIn.com\\in\\Fi-NancyManagement Fi-NancyManagement@gmail.com Financial Management Professional Finance Manager / Product Pricer / Acquisition Analyst Executive MBA Program Participant Skilled financial management professional with 10 years of broad-based experience

  8. SpArcFiRe: Scalable automated detection of spiral galaxy arm segments

    SciTech Connect (OSTI)

    Davis, Darren R.; Hayes, Wayne B., E-mail: drdavis@uci.edu, E-mail: whayes@uci.edu [University of California, Irvine, CA 92697-3435 (United States)

    2014-08-01

    Given an approximately centered image of a spiral galaxy, we describe an entirely automated method that finds, centers, and sizes the galaxy (possibly masking nearby stars and other objects if necessary in order to isolate the galaxy itself) and then automatically extracts structural information about the spiral arms. For each arm segment found, we list the pixels in that segment, allowing image analysis on a per-arm-segment basis. We also perform a least-squares fit of a logarithmic spiral arc to the pixels in that segment, giving per-arc parameters, such as the pitch angle, arm segment length, location, etc. The algorithm takes about one minute per galaxies, and can easily be scaled using parallelism. We have run it on all ?644,000 Sloan objects that are larger than 40 pixels across and classified as 'galaxies'. We find a very good correlation between our quantitative description of a spiral structure and the qualitative description provided by Galaxy Zoo humans. Our objective, quantitative measures of structure demonstrate the difficulty in defining exactly what constitutes a spiral 'arm', leading us to prefer the term 'arm segment'. We find that pitch angle often varies significantly segment-to-segment in a single spiral galaxy, making it difficult to define the pitch angle for a single galaxy. We demonstrate how our new database of arm segments can be queried to find galaxies satisfying specific quantitative visual criteria. For example, even though our code does not explicitly find rings, a good surrogate is to look for galaxies having one long, low-pitch-angle arm—which is how our code views ring galaxies. SpArcFiRe is available at http://sparcfire.ics.uci.edu.

  9. Homoleptic Ce(III) and Ce(IV) Nitroxide Complexes: Significant Stabilization of the 4+ Oxidation State

    SciTech Connect (OSTI)

    Bogart, Justin A.; Lewis, Andrew J.; Medling, Scott A.; Piro, Nicholas A.; Carroll, Patrick J.; Booth, Corwin H.; Schelter, Eric J.

    2014-06-25

    Electrochemical experiments performed on the complex Ce-IV[2-((BuNO)-Bu-t)py](4), where [2-((BuNO)-Bu-t)py](-) = N-tert-butyl-N-2-pyridylnitroxide, indicate a 2.51 V stabilization of the 4+ oxidation state of Ce compared to [(Bu4N)-Bu-n](2)[Ce(NO3)(6)] in acetonitrile and a 2.95 V stabilization compared to the standard potential for the ion under aqueous conditions. Density functional theory calculations suggest that this preference for the higher oxidation state is a result of the tetrakis(nitroxide) ligand framework at the Ce cation, which allows for effective electron donation into, and partial covalent overlap with, vacant 4f orbitals with delta symmetry. The results speak to the behavior of CeO2 and related solid solutions in oxygen uptake and transport applications, in particular an inherent local character of bonding that stabilizes the 4+ oxidation state. The results indicate a cerium(IV) complex that has been stabilized to an unprecedented degree through tuning of its ligand-field environment.

  10. Improved performance of QCD code on ALiCE

    E-Print Network [OSTI]

    Sroczynski, Z

    2003-01-01

    We present results for the performance of QCD code on ALiCE, the Alpha-Linux Cluster Engine at Wuppertal. We describe the techniques employed to optimise the code, including the metaprogramming of assembler kernels, the effects of data layout and an investigation into the overheads incurred by the communication.

  11. Neutron scattering of CeNi at the SNS-ORNL: A preliminary report

    SciTech Connect (OSTI)

    Mirmelstein, A. [Russian Federal Nuclear Center VNIITF, Snezhinsk, Russia; Podlesnyak, Andrey A [ORNL; Kolesnikov, Alexander I [ORNL; Saporov, B. [Oak Ridge National Laboratory (ORNL); Sefat, A.S. [Oak Ridge National Laboratory (ORNL); Tobin, J. G. [Lawrence Livermore National Laboratory (LLNL)

    2014-01-01

    This is a preliminary report of a neutron scattering experiment used to investigate 4f electron behavior in Ce.

  12. Application-Centric Wi-Fi Energy Management on Smart Phone

    E-Print Network [OSTI]

    Boutaba, Raouf

    Application-Centric Wi-Fi Energy Management on Smart Phone Jian Li Computer Science and Engineering-Fi energy consumption, and propose three energy management schemes: 1) Dynamic control of Wi-Fi on and solution prototyping, we show the effectiveness of device side Wi-Fi energy management and the importance

  13. Comparative studies of low-temperature watergas shift reaction over Pt=CeO2, Au=CeO2,

    E-Print Network [OSTI]

    Gulari, Erdogan

    , has shown that ceria affects in a number of catalytic reactions. Cerium oxide or Ceria (CeO2) may attention re- cently because of their catalytic activity in low temperature CO oxidation, catalytic; accepted 13 March 2003 Abstract We studied catalytic low-temperature water­gas shift (WGS) reaction over

  14. Grande Wi-Fi : understanding what Wi-Fi users are doing in coffee-shops

    E-Print Network [OSTI]

    Gupta, Neeti

    2004-01-01

    The relationship between coffee-shops and Internet has recently been highlighted by the launch of wireless "hotspots" which provides e-access through Wi-Fi technology, in coffee-shops and several other public places in ...

  15. Mon. Not. R. Astron. Soc. 000, 000--000 (0000) Printed 7 June 2001 (MN L A T E X style file v2.2) The magnetic field and wind confinement of fi Cephei

    E-Print Network [OSTI]

    Donati, Jean-François

    .2) The magnetic field and wind confinement of fi Cephei: new clues for interpreting the Be phenomenon? J of the large scale magnetic field and of the associated magnetically confined wind and cir­ cumstellar field is strong enough to confine magnetically the wind of fi Cep up to a distance of about 8 to 9 R

  16. Instrumentation of Steel Const. Award to CE 

    E-Print Network [OSTI]

    Unknown

    2011-08-17

    High energy neutron and proton radiation can induce serious damage in structural metals, including void swelling and embrittlement. Hence the design of advanced metallic materials with significantly enhanced radiation ...

  17. Instrumentation of Steel Const. Award to CE 

    E-Print Network [OSTI]

    Unknown

    2011-08-17

    Overheight vehicle impact to bridge decks is a major problem in the transportation networks in the United States. An important factor that causes this problem is inadequate vertical clearance of bridges. Using steel pedestals to elevate bridge decks...

  18. Goodman Manufacturing: Order (2012-CE-1509) | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:FinancingPetroleum12,Executive CompensationEnergyGet Current:5 Department of2-CE-1509) Goodman

  19. Ethanol Steam Reforming on Co/CeO2: The Effect of ZnO Promoter

    SciTech Connect (OSTI)

    Davidson, Stephen; Sun, Junming; Wang, Yong

    2013-12-02

    A series of ZnO promoted Co/CeO2 catalysts were synthesized and characterized using XRD, TEM, H2-TPR, CO chemisorption, O2-TPO, IR-Py, and CO2-TPD. The effects of ZnO on the catalytic performances of Co/CeO2 were studied in ethanol steam reforming. It was found that the addition of ZnO facilitated the oxidation of Co0 via enhanced oxygen mobility of the CeO2 support which decreased the activity of Co/CeO2 in C–C bond cleavage of ethanol. 3 wt% ZnO promoted Co/CeO2 exhibited minimum CO and CH4 selectivity and maximum CO2 selectivity. This resulted from the combined effects of the following factors with increasing ZnO loading: (1) enhanced oxygen mobility of CeO2 facilitated the oxidation of CHx and CO to form CO2; (2) increased ZnO coverage on CeO2 surface reduced the interaction between CHx/CO and Co/CeO2; and (3) suppressed CO adsorption on Co0 reduced CO oxidation rate to form CO2. In addition, the addition of ZnO also modified the surface acidity and basicity of CeO2, which consequently affected the C2–C4 product distributions.

  20. Neutron Scattering of CeNi at the Spallation Neutron Source at...

    Office of Scientific and Technical Information (OSTI)

    Spallation Neutron Source at Oak Ridge National Laboratory: A Preliminary Report Citation Details In-Document Search Title: Neutron Scattering of CeNi at the Spallation Neutron...

  1. Tracking Human Mobility Using WiFi Signals

    E-Print Network [OSTI]

    Sapiezynski, Piotr

    We study six months of human mobility data, including WiFi and GPS traces recorded with high temporal resolution, and find that time series of WiFi scans contain a strong latent location signal. In fact, due to inherent ...

  2. The influence of nano-architectured CeOx supports in RhPd/CeO? for the catalytic ethanol steam reforming reaction

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

    Divins, N. J.; Senanayake, S. D.; Casanovas, A.; Xu, W.; Trovarelli, A.; Llorca, J.

    2015-01-19

    The ethanol steam reforming (ESR) reaction has been tested over RhPd supported on polycrystalline ceria in comparison to structured supports composed of nanoshaped CeO? cubes and CeO? rods tailored towards the production of hydrogen. At 650-700 K the hydrogen yield follows the trend RhPd/CeO?-cubes > RhPd/CeO? -rods > RhPd/CeO?- polycrystalline, whereas at temperatures higher than 800 K the catalytic performance of all samples is similar and close to the thermodynamic equilibrium. The improved performance of RhPd/CeO?-cubes and RhPd/CeO? -rods for ESR at low temperature is mainly ascribed to higher water-gas shift activity and a strong interaction between the bimetallic -more »oxide support interaction. STEM analysis shows the existence of RhPd alloyed nanoparticles in all samples, with no apparent relationship between ESR performance and RhPd particle size. X-ray diffraction under operating conditions shows metal reorganization on {100} and {110} ceria crystallographic planes during catalyst activation and ESR, but not on {111} ceria crystallographic planes. The RhPd reconstructing and tuned activation over ceria nanocubes and nanorods is considered the main reason for better catalytic activity with respect to conventional catalysts based on polycrystalline ceria« less

  3. Thermal Variation of Ce Valence in Mixed Valence–Kondo Lattice Systems CeT2(Si1-xGex)2 with T= Mn and Ni

    SciTech Connect (OSTI)

    Liang,G.; Croft, M.

    2008-01-01

    The results on the thermal variation of Ce L3-valence in CeT2(Si1-xGex)2 series with 0{le}x{le}1 and T=Mn and Ni are reported. It is observed that for both series, the Ce valence increases with decreasing temperature and has little thermal variation for samples in the nearly trivalent regime. The magnitude of this thermal variation in the T=Mn series is much greater than in the T=Ni series. The results are explained by the degenerate Anderson model and correlated with the specific heat data.

  4. Ternary ceramic alloys of Zr-Ce-Hf oxides

    DOE Patents [OSTI]

    Becher, P.F.; Funkenbusch, E.F.

    1990-11-20

    A ternary ceramic alloy is described which produces toughening of zirconia and zirconia composites through the stress transformation from tetragonal phase to monoclinic phase. This alloy, having the general formula Ce[sub x]Hf[sub y]Zr[sub 1[minus]x[minus]y]O[sub 2], is produced through the addition of appropriate amounts of ceria and hafnia to the zirconia. Typically, improved toughness is achieved with about 5 to about 15 mol % ceria and up to about 40 mol % hafnia. The preparation of alloys of these compositions are given together with data as to the densities, tetragonal phase content, hardness and fracture toughness. The alloys are useful in preparing zirconia bodies as well as reinforcing ceramic composites. 1 fig.

  5. Ternary ceramic alloys of ZR-CE-HF oxides

    DOE Patents [OSTI]

    Becher, Paul F. (Oak Ridge, TN); Funkenbusch, Eric F. (White Bear Lake, MN)

    1990-01-01

    A ternary ceramic alloy which produces toughening of zirconia and zirconia composites through the stress transformation from tetragonal phase to monoclinic phase. This alloy, having the general formula Ce.sub.x Hf.sub.y Zn.sub.1-x-y O.sub.2, is produced through the addition of appropriate amounts of ceria and hafnia to the zirconia. Typically, improved toughness is achieved with about 5 to about 15 mol % ceria and up to about 40 mol % hafnia. The preparation of alloys of these compositions are given together with data as to the densities, tetragonal phase content, hardness and fracture toughness. The alloys are useful in preparing zirconia bodies as well as reinforcing ceramic composites.

  6. Preparation and properties of ce-doped TiO{sub 2} photocatalyst

    SciTech Connect (OSTI)

    Yan, Ningning; Zhu, Zhongqi; Zhang, Jin [Yunnan Key Laboratory of Nanomaterials and Technology, Yunnan University, Kunming 650091 (China)] [Yunnan Key Laboratory of Nanomaterials and Technology, Yunnan University, Kunming 650091 (China); Zhao, Zongyan [School of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093 (China)] [School of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093 (China); Liu, Qingju, E-mail: qjliu@ynu.edu.cn [Yunnan Key Laboratory of Nanomaterials and Technology, Yunnan University, Kunming 650091 (China)] [Yunnan Key Laboratory of Nanomaterials and Technology, Yunnan University, Kunming 650091 (China)

    2012-08-15

    Highlights: ? The cerium ion doped TiO{sub 2} (Ce-TiO{sub 2}) powders were prepared and characterized. ? The spectrum absorption region of Ce-TiO{sub 2} is red-shifted to visible light. ? The recombination of photo-generated electron-hole pairs of Ce-TiO{sub 2} is inhibited. ? The photocatalytic activity was effected by Ce ion content and greatly improved. -- Abstract: TiO{sub 2} nanoparticles doped with different content of Ce ion were prepared by sol–gel method. The samples were characterized by XRD, XPS, TEM, UV–Vis, and PL, the photocatalytic activity was evaluated by photocatalytic degradation of methylene blue (MB) under the irradiation of fluorescent lamp. The results indicate that Ce ion is incorporated into the lattice of TiO{sub 2}, which can restrain the increase of grain size, broaden the absorption region to visible light, and inhibit the recombination of the photo-generated electron and hole pairs. Moreover, the photocatalytic activity of Ce-TiO{sub 2} in MB degradation is evidently enhanced. The MB degradation rate of the sample with Ce:Ti = 0.33% (molar ratio) in 8 h is 90.03%, which is much higher than that of P25 (68.19%).

  7. CertifiCAtion of performAnCe indiCAtors ........ 110 Curtin's institutionAl

    E-Print Network [OSTI]

    Mucina, Ladislav

    and performance enhance capacity and financial sustainability l total Research income ($) Ranking Strengthen research capability and performance enhance capacity and financial sustainability m CooperaCertifiCAtion of performAnCe indiCAtors ........ 110 Curtin's institutionAl performAnCe indi

  8. Poster Abstract: Practical Limits of WiFi Time-of-Flight Echo Techniques

    E-Print Network [OSTI]

    Lenders, Vincent

    Giustiniano Institute IMDEA Networks Madrid, Spain domenico.giustiniano@imdea.org Vincent Lenders Armasuisse Thun, Switzerland vincent.lenders@armasuisse.ch Abstract--Time-of-flight echo techniques have been

  9. Curtin university of teChnology annual report 2011 107 PerForMAnCe indiCAtors

    E-Print Network [OSTI]

    Mucina, Ladislav

    research capability and performance Enhance capacity and financial sustainability l Total Research IncomeCurtin university of teChnology annual report 2011 107 PerForMAnCe indiCAtors CertifiCation of performanCe inDiCators.......................... 108 Curtin's institutional performanCe in

  10. Ce-MXRF: the power of separation with bench top element sensitive detection

    SciTech Connect (OSTI)

    Miller, T. C. (Thomasin C.); Joseph, M. R. (Martha R.); Havrilla, G. J. (George J.)

    2002-01-01

    Capillary electrophoresis (CE) is a proven separation technique that offers highly efficient separation, rapid analysis, and minute sample consumption. When combined with a element specific detection scheme, it can be used for chemical speciation of biologically and environmentally relevant species such as metal containing proteins. In this study, a new tool was developed for separation and elemental detection. Specifically, a simple CE apparatus was constructed using a thin-walled fused Si capillary and interfaced with a bench top micro x-ray fluorescence (MXRF) system. X-ray excitation and detection of the separated sample volumes was performed using an EDAX Eagle II micro x-ray fluorescence system equipped with a Rh target excitation source and a SiLi detector. It was demonstrated that the system could be used for the separation and detection of two metals from one another, specifically Cu{sup 2+} and Co{sup 2+}. Free Co{sup 2+} could also be isolated from Co{sup 2+} bound to cyanocobalamin (Vitamin B-12). Other systems that were explored were the separation of two organics, ferritin from cyanocobalamin as well as the separation of the different Cu and Zn isoforms of metallothinein. CE-MXRF was also used to separate the important serum isoforms of transferrin. Direct comparisons were made between CE-MXRF system and other elemental separation techniques such as CE-PIXE, CE-synchrotron-XRF, and CE-ICPMS.

  11. Hydrothermal growth and morphology evolution of CePO{sub 4} aggregates by a complexing method

    SciTech Connect (OSTI)

    Ma Lin [Department of Chemistry, Zhejiang University, Hangzhou 310027 (China); Chen Weixiang [Department of Chemistry, Zhejiang University, Hangzhou 310027 (China)], E-mail: weixiangchen@css.zju.edu.cn; Zheng Yifan [Institute of Industrial Catalysis, Zhejiang University of Technology, Hangzhou 310014 (China); Xu Zhude [Department of Chemistry, Zhejiang University, Hangzhou 310027 (China)

    2008-11-03

    A facile hydrothermal route assisted by Na{sub 2}H{sub 2}EDTA (ethylenediaminetetraacetic acid disodium) has been successfully developed to prepare uniform cerium phosphate (CePO{sub 4}) aggregates with different morphologies, such as peanut-like and spindle-like. It was found that the as-prepared uniform CePO{sub 4} aggregates were constructed with many nearly parallel aligned nanorods. The molar ratio of EDTA/Ce{sup 3+}, solution pH and reaction time had great influences on the morphologies and sizes of the CePO{sub 4} samples. In our process of synthesis, Na{sub 2}H{sub 2}EDTA played important roles as complexing reagent and inducing agent on the formation of CePO{sub 4} aggregates. The possible growth mechanism for CePO{sub 4} aggregates was presented. Ce{sub 0.9}Tb{sub 0.1}PO{sub 4} aggregates with different morphologies were also prepared and their photoluminescence properties were characterized.

  12. iPad Price Guide -2015 Wi-Fi Only Wi-Fi/Cellular

    E-Print Network [OSTI]

    Burton, Geoffrey R.

    iPad Price Guide - 2015 Wi-Fi Only Wi-Fi/Cellular 16GB 64GB 128GB Wi-Fi Only Wi-Fi/Cellular 16GB 64, 5MP iSight Camera Available in Space Grey or Silver Capacity Wi-Fi Only £250 ex VAT £281 ex VAT Wi-Fi/Cellular in Space Grey or Silver Capacity Wi-Fi Only £187 ex VAT £219 ex VAT Wi-Fi/Cellular £266 ex VAT £297 ex VAT

  13. Magnitude of the magnetic exchange interaction in the heavy-fermion antiferromagnet CeRhIn?

    SciTech Connect (OSTI)

    Das, Pinaki [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States); Lin, S. -Z. [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States); Ghimire, N.? J. [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States); Huang, K. [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States); Univ. of California, San Diego, La Jolla, CA (United States); Ronning, F. [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States); Bauer, E.? D. [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States); Thompson, J.? D. [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States); Batista, C.? D. [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States); Ehlers, G. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Janoschek, M. [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

    2014-12-01

    We have used high-resolution neutron spectroscopy experiments to determine the complete spin wave spectrum of the heavy-fermion antiferromagnet CeRhIn?. The spin wave dispersion can be quantitatively reproduced with a simple frustrated J??J? model that also naturally explains the magnetic spin-spiral ground state of CeRhIn? and yields a dominant in-plane nearest-neighbor magnetic exchange constant J?=0.74(3)??meV. Our results pave the way to a quantitative understanding of the rich low-temperature phase diagram of the prominent CeTIn? (T = Co, Rh, Ir) class of heavy-fermion materials.

  14. Life Cycle Analysis of the Production of Aviation Fuels Using the CE-CERT Process

    E-Print Network [OSTI]

    Hu, Sangran

    2012-01-01

    energy crop cultivation 16 . The second and third generation biofuels have much better potential as aviation fuelenergy, a CBTL process with CE-CERT process combined is expected to be of great potential in Fischer-Tropsch synthetic aviation fuel

  15. ANNUAL REPOR urea u of Com mercia I Fi she r ies

    E-Print Network [OSTI]

    ., and the offing of New York. Cruise number 59-14. - To develop and perfect hydro- graphic and fish-su:.v,:y ~e ct s ince 1953 and has been beneficial in many ways. Discard of small, unwanted fish has been reduced regulation. All studies of the effect of sav- ing the small fish have dealt with comparing yields from

  16. Fusion of WiFi, Smartphone Sensors and Landmarks Using the Kalman Filter for Indoor Localization

    E-Print Network [OSTI]

    Chen, Zhenghua; Zou, Han; Jiang, Hao; Zhu, Qingchang; Soh, Yeng; Xie, Lihua

    2015-01-01

    filters and low-cost MEMS sensors. In Proceedings of theMEMS INS Data Fusion and Map Matching in Urban Areas. Sensors

  17. Fusion of WiFi, Smartphone Sensors and Landmarks Using the Kalman Filter for Indoor Localization

    E-Print Network [OSTI]

    Chen, Zhenghua; Zou, Han; Jiang, Hao; Zhu, Qingchang; Soh, Yeng; Xie, Lihua

    2015-01-01

    T.T. GPS/MEMS INS Data Fusion and Map Matching in UrbanP. ; Besada, J.A. ; Casar, J.R. Fusion of RSS and inertialConference on Information Fusion (FUSION), Istanbul, Turkey,

  18. Analytical Framework for the Capacity and Delay Evaluation of Next-Generation FiWi Network

    E-Print Network [OSTI]

    Reisslein, Martin

    Algorithms Martin L´evesque and Martin Maier Optical Zeitgeist Laboratory INRS Montr´eal, QC, Canada Email-mobile conver- gence, a plethora of wireless, integrated optical-wireless, multi- path, and energy-aware routing-wireless (e.g., availability-aware routing [4]), multipath (e.g., [5]), and energy-aware routing algorithms (e

  19. LADWP - Feed-in Tariff (FiT) Program | 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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i nAand DOE Safety Standards Implementation JulyTheKEY07-97# . L I .

  20. Super Wi-Fi is Super for Energy Too | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX E LIST OF APPLICABLEStatutory Authority forPerk | DepartmentOrderSunshot RooftopSuper

  1. METAL MEDIA FILTERS, AG-1 SECTION FI

    SciTech Connect (OSTI)

    Adamson, D.

    2012-05-23

    One application of metal media filters is in various nuclear air cleaning processes including applications for protecting workers, the public and the environment from hazardous and radioactive particles. To support this application the development of the ASME AG-1 FI Standard on Metal Media has been under way for more than ten years. Development of the proposed section has required resolving several difficult issues associated with operating conditions (media velocity, pressure drop, etc.), qualification testing, and quality acceptance testing. Performance characteristics of metal media are dramatically different than the glass fiber media with respect to parameters like differential pressures, operating temperatures, media strength, etc. These differences make existing data for a glass fiber media inadequate for qualifying a metal media filter for AG-1. In the past much work has been conducted on metal media filters at facilities such as Lawrence Livermore National Laboratory (LLNL) and Savannah River National Laboratory (SRNL) to qualify the media as High Efficiency Particulate Air (HEPA) Filters. Particle retention testing has been conducted at Oak Ridge Filter Test Facility and at Air Techniques International (ATI) to prove that the metal media meets or exceeds the 99.97% particle retention required for a HEPA Filter. Even with his testing, data was lacking to complete an AG-1 FI Standard on metal media. With funding secured by Mississippi State University (MSU) from National Nuclear Security Administration (NNSA), a research test stand is being designed and fabricated at MSU's Institute for Clean Energy Technology (ICET) Facility to obtain qualification data on metal media. This in turn will support required data needed for the FI Standard. The paper will discuss in detail how the test stand at MSU will obtain the necessary data to complete the FI Standard.

  2. CRAD, NNSA- Feedback and Improvement Programs (F&I)

    Broader source: Energy.gov [DOE]

    CRAD for Feedback and Improvement Programs (F&I). Criteria Review and Approach Documents (CRADs) that can be used to conduct a well-organized and thorough assessment of elements of safety and health programs.

  3. Airshark: Detecting Non-WiFi RF Devices using Commodity WiFi Hardware

    E-Print Network [OSTI]

    Banerjee, Suman

    .g., ZigBee, analog cordless phone), frequency hoppers (e.g., Bluetooth, game controllers like Xbox monitors), wireless game controllers (Xbox and Wii), various ZigBee devices (e.g., Permission to make Phone Videocam Microwave Xbox Zigbee Figure 1: Degradation in UDP throughput of a good quality WiFi link

  4. Structure and magnetic properties of Ce?(Ni/Al/Ga)??-A...

    Office of Scientific and Technical Information (OSTI)

    Ce(NiAlGa)-A new phase with the LaAl structure type Janka, Oliver Univ. of California, Davis, CA (United States); Westfalische Wilhelms-Universitat, Munster...

  5. Results for aliovalent doping of CeBr{sub 3} with Ca{sup 2+}

    SciTech Connect (OSTI)

    Guss, Paul; Foster, Michael E.; Wong, Bryan M.; Patrick Doty, F.; Shah, Kanai; Squillante, Michael R.; Shirwadkar, Urmila; Hawrami, Rastgo; Tower, Joshua; Yuan, Ding

    2014-01-21

    Despite the outstanding scintillation performance characteristics of cerium tribromide (CeBr{sub 3}) and cerium-activated lanthanum tribromide, their commercial availability and application are limited due to the difficulties of growing large, crack-free single crystals from these fragile materials. This investigation employed aliovalent doping to increase crystal strength while maintaining the optical properties of the crystal. One divalent dopant (Ca{sup 2+}) was used as a dopant to strengthen CeBr{sub 3} without negatively impacting scintillation performance. Ingots containing nominal concentrations of 1.9% of the Ca{sup 2+} dopant were grown, i.e., 1.9% of the CeBr{sub 3} molecules were replaced by CaBr{sub 2} molecules, to match our target replacement of 1 out of 54 cerium atoms be replaced by a calcium atom. Precisely the mixture was composed of 2.26 g of CaBr{sub 2} added to 222.14 g of CeBr{sub 3}. Preliminary scintillation measurements are presented for this aliovalently doped scintillator. Ca{sup 2+}-doped CeBr{sub 3} exhibited little or no change in the peak fluorescence emission for 371?nm optical excitation for CeBr{sub 3}. The structural, electronic, and optical properties of CeBr{sub 3} crystals were studied using the density functional theory within the generalized gradient approximation. Calculated lattice parameters are in agreement with the experimental data. The energy band structures and density of states were obtained. The optical properties of CeBr{sub 3}, including the dielectric function, were calculated.

  6. Structure and scintillation yield of Ce-doped Al–Ga substituted yttrium garnet

    SciTech Connect (OSTI)

    Sidletskiy, Oleg; Kononets, Valerii; Lebbou, Kheirreddine; Neicheva, Svetlana; Voloshina, Olesya; Bondar, Valerii; Baumer, Vyacheslav; Belikov, Konstantin; Gektin, Alexander; Grinyov, Boris; Joubert, Marie-France

    2012-11-15

    Highlights: ? Range of Y{sub 3}(Al{sub 1?x}Ga{sub x}){sub 5}O{sub 12}:Ce solid solution crystals are grown from melt by the Czochralski method. ? Light yield of mixed crystals reaches 130% of the YAG:Ce value at x ? 0.4. ? ?1% of antisite defects is formed in YGG:Ce, but no evidence of this is obtained for the rest of crystals. -- Abstract: Structure and scintillation yield of Y{sub 3}(Al{sub 1?x}Ga{sub x}){sub 5}O{sub 12}:Ce solid solution crystals are studied. Crystals are grown from melt by the Czochralski method. Distribution of host cations in crystal lattice is determined. Quantity of antisite defects in crystals is evaluated using XRD and atomic emission spectroscopy data. Trend of light output at Al/Ga substitution in Y{sub 3}(Al{sub 1?x}Ga{sub x}){sub 5}O{sub 12}:Ce is determined for the first time. Light output in mixed crystals reaches 130% comparative to Ce-doped yttrium–aluminum garnet. Luminescence properties at Al/Ga substitution are evaluated.

  7. A comparison of the structure and localized magnetism in Ce{sub 2}PdGa{sub 12} with the heavy fermion CePdGa{sub 6}

    SciTech Connect (OSTI)

    Macaluso, Robin T. [Department of Chemistry, Louisiana State University, Baton Rouge, LA 70803 (United States); Millican, Jasmine N. [Department of Chemistry, Louisiana State University, Baton Rouge, LA 70803 (United States); Nakatsuji, Satoru [Department of Physics, Kyoto University, Kyoto, Japan 606-8502 (Japan); Lee, Han-Oh [Department of Physics, University of California, Davis, CA 95616 (United States); Carter, B. [Los Alamos National Laboratory, Los Alamos, NM 87545 (United States); Moreno, Nelson O. [Los Alamos National Laboratory, Los Alamos, NM 87545 (United States); Fisk, Zachary [Department of Physics, University of California, Davis, CA 95616 (United States); Chan, Julia Y. [Department of Chemistry, Louisiana State University, Baton Rouge, LA 70803 (United States)]. E-mail: jchan@lsu.edu

    2005-11-15

    Single crystals of Ce{sub 2}PdGa{sub 12} have been synthesized in Ga flux and characterized by X-ray diffraction. This compound crystallizes in the tetragonal P4/nbm space group, Z=2 with lattice parameters of a=6.1040(2)A and c=15.5490(6)A. It shows strongly anisotropic magnetism and orders antiferromagnetically at T{sub N}{approx}11K. A field-induced metamagnetic transition to the ferromagnetic state is observed below T{sub N}. Structure-property relationships with the related heavy-fermion antiferromagnet CePdGa{sub 6} are discussed.

  8. PQL: Order (2013-CE-27001) | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankADVANCED MANUFACTURINGEnergy Bills andOrder 422.1, CONDUCT P - . . - - 4PORTSFUTUREOrder (2013-CE-27001)

  9. LG: Order (2015-CE-14022) | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankADVANCED MANUFACTURING OFFICE INDUSTRIALU.S. DepartmentJeanKeyLANLLG: Order (2015-CE-14022) LG: Order

  10. Haier: Order (2011-CE-2104) | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:FinancingPetroleum12,ExecutiveFinancing Programs |ReferencePowerHaier: Order (2011-CE-2104) Haier:

  11. DEPARTMENT OF THE NAVY OFfiCE OF THE CHIEF OF NAVAL OPERATIONS

    E-Print Network [OSTI]

    DEPARTMENT OF THE NAVY OFfiCE OF THE CHIEF OF NAVAL OPERATIONS 2000 NAVY PENTAGON WASHINGTON, DC: Chief of Naval Operations Subj , NAVY PASSENGER TRAVEL Ref: (al 000 Di rective 5154.29 of 9 Marc h 1993 on the management , execution, and funding of passenger travel for Navy personne l . This i n struction

  12. HoWiES: A Holistic Approach to ZigBee Assisted WiFi Energy Savings in Mobile Devices

    E-Print Network [OSTI]

    Li, Qun

    HoWiES: A Holistic Approach to ZigBee Assisted WiFi Energy Savings in Mobile Devices Yifan ZhangWiES, a system that saves energy consumed by WiFi interfaces in mobile devices with the assistance of ZigBee radios. The core component of HoWiES is a WiFi- ZigBee message delivery scheme that enables WiFi radios

  13. Fischer-Tropsch Synthesis. Reduction Behavior and Catalytic Activity of Fe-Ce Systems

    SciTech Connect (OSTI)

    Perez-Alonso, F.J.; Ojeda, M.; Herranz, T.; Fierro, J.L.G. [Instituto de Catalisis y Petroleoquimica (CSIC), c/Marie Curie 2, 28049 Madrid (Spain); Bengoa, J.F.; Marchetti, S.G. [CINDECA, Facultad de Ciencias Exactas, Facultad de Ingenieria, UNLP, CICBA, CONICET, Calle 47 No 257, 1900 La Plata (Argentina)

    2005-04-26

    Several Fe-Ce catalysts for FT synthesis were prepared following two different methods: coprecipitation from Fe and Ce nitrate solutions and a physical mixture of pure Fe and Ce precursors. The iron phases present in the activated catalysts were identified by XRD and Moessbauer spectroscopy. A good correlation between both techniques was found. The results revealed that the cerium oxide in the samples prepared by coprecipitation produces two effects: (i), stabilization of metastable species (Fe1-xO), and (ii), a decrease in the crystallite size of the iron species upon increasing Ce-contents, as inferred from an increase in superparamagnetic species. The catalysts were tested in CO hydrogenation in a flow reactor. It was found that selectivity towards light olefins increases for the coprecipitated Ce-containing catalysts, whereas CO conversion followed the opposite trend. Since the Fe1-xO phase was detected in these catalysts, it is suggested that the formation of the Fe1-xO phase would be responsible for the drop in catalytic activity.

  14. Title: SPONSORSHIP OR CE APPROVAL OF NON-SCHOOL OF NURSING CONTINUING EDUCATION OFFERING

    E-Print Network [OSTI]

    Chapman, Michael S.

    1 Title: SPONSORSHIP OR CE APPROVAL OF NON-SCHOOL OF NURSING CONTINUING EDUCATION OFFERING Index: School of Nursing sponsorship and/or approval of a continuing education offering given by individuals by approving offerings given by non-School of Nursing faculty. Implementing Procedures: Responsible Party

  15. Exploiting ZigBee in Reducing WiFi Power Consumption for Mobile Devices

    E-Print Network [OSTI]

    Li, Qun

    Exploiting ZigBee in Reducing WiFi Power Consumption for Mobile Devices Yifan Zhang and Qun Li in mobile devices with the assistance of ZigBee radios. The core component of HoWiES is a WiFi-ZigBee message delivery scheme that enables WiFi radios to convey different messages to ZigBee radios in mobile

  16. Transmission Electron Microscopy Investigation of Krypton Bubbles in Polycrystalline CeO2

    SciTech Connect (OSTI)

    Lingfeng He; Clarissa Yablinsky; Mahima Gupta; Jian Gan; Marquis A. Kirk; Todd R. Allen

    2013-05-01

    To gain an understanding of gas bubble transport in oxide nuclear fuel, this paper uses polycrystalline CeO2, composed of both nanograins and micrograins, as a surrogate material for UO2. The CeO2 was implanted with 150-keV Kr ions up to a dose of 1 x 1016 ions/cm2 at 600 degrees C. Transmission electron microscopy characterizations of small Kr bubbles in nanograin and micrograin regions were compared. The grain boundary acted as an efficient defect sink, as evidenced by smaller bubbles and a lower bubble density in the nanograin region as compared to the micrograin region.

  17. Mechanism of Methane Chemical Looping Combustion with Hematite Promoted with CeO2

    SciTech Connect (OSTI)

    Miller, Duane D.; Siriwardane, Ranjani

    2013-08-01

    Chemical looping combustion (CLC) is a promising technology for fossil fuel combustion that produces sequestration-ready CO{sub 2} stream, reducing the energy penalty of CO{sub 2} separation from flue gases. An effective oxygen carrier for CLC will readily react with the fuel gas and will be reoxidized upon contact with oxygen. This study investigated the development of a CeO{sub 2}-promoted Fe{sub 2}O{sub 3}?hematite oxygen carrier suitable for the methane CLC process. Composition of CeO{sub 2} is between 5 and 25 wt % and is lower than what is generally used for supports in Fe{sub 2}O{sub 3} carrier preparations. The incorporation of CeO{sub 2} to the natural ore hematite strongly modifies the reduction behavior in comparison to that of CeO{sub 2} and hematite alone. Temperature-programmed reaction studies revealed that the addition of even 5 wt % CeO{sub 2} enhances the reaction capacity of the Fe{sub 2}O{sub 3} oxygen carrier by promoting the decomposition and partial oxidation of methane. Fixed-bed reactor data showed that the 5 wt % cerium oxides with 95 wt % iron oxide produce 2 times as much carbon dioxide in comparison to the sum of carbon dioxide produced when the oxides were tested separately. This effect is likely due to the reaction of CeO{sub 2} with methane forming intermediates, which are reactive for extracting oxygen from Fe{sub 2}O{sub 3} at a considerably faster rate than the rate of the direct reaction of Fe{sub 2}O{sub 3} with methane. These studies reveal that 5 wt % CeO{sub 2}/Fe{sub 2}O{sub 3} gives stable conversions over 15 reduction/oxidation cycles. Lab-scale reactor studies (pulsed mode) suggest the methane reacts initially with CeO{sub 2} lattice oxygen to form partial oxidation products (CO + H{sub 2}), which continue to react with oxygen from neighboring Fe{sub 2}O{sub 3}, leading to its complete oxidation to form CO{sub 2}. The reduced cerium oxide promotes the methane decomposition reaction to form C + H{sub 2}, which continue to react with Fe{sub 2}O{sub 3}/Fe{sub 3}O{sub 4} to form CO/CO{sub 2} and H{sub 2}O. This mechanism is supported by the characterization studies, which also suggest that the formation of carbonaceous intermediates may affect the reaction rate and selectivity of the oxygen carrier.

  18. Optical properties of the Ce and La ditelluride charge density wave compounds

    SciTech Connect (OSTI)

    Lavagnini, M.; Sacchetti, A.; Degiorgi, L.; /Zurich, ETH; Shin, K.Y.; Fisher, I.R.; /Stanford U., Geballe Lab. /Stanford U., Appl. Phys. Dept.

    2010-02-15

    The La and Ce di-tellurides LaTe{sub 2} and CeTe{sub 2} are deep in the charge-density-wave (CDW) ground state even at 300 K. We have collected their electrodynamic response over a broad spectral range from the far infrared up to the ultraviolet. We establish the energy scale of the single particle excitation across the CDW gap. Moreover, we find that the CDW collective state gaps a very large portion of the Fermi surface. Similarly to the related rare earth tri-tellurides, we envisage that interactions and Umklapp processes play a role in the onset of the CDW broken symmetry ground state.

  19. 110 Curtin university of teChnology annual report 2012 CertiFiCAtion oF KeY PerForMAnCe indiCAtors

    E-Print Network [OSTI]

    Mucina, Ladislav

    ($) Ranking Strengthen research capability and performance. Enhance capacity and financial sustainability. k and performance. Enhance capacity and financial sustainability. m Research Publication (weighted Higher Education research capability and performance. Enhance capacity and financial sustainability. o Weig

  20. A Comparative Study of the Water Gas Shift Reaction Over Platinum Catalysts Supported on CeO2, TiO2 and Ce-Modified TiO2

    SciTech Connect (OSTI)

    Gonzalez, I.; Navarro, R; Wen, W; Marinkovic, N; Rodriguez, J; Rosa, F; Fierro, J

    2010-01-01

    WGS reaction has been investigated on catalysts based on platinum supported over CeO{sub 2}, TiO{sub 2} and Ce-modified TiO{sub 2}. XPS and XANES analyses performed on calcined catalysts revealed a close contact between Pt precursors and cerium species on CeO{sub 2} and Ce-modified TiO{sub 2} supports. TPR results corroborate the intimate contact between Pt and cerium entities in the Pt/Ce-TiO{sub 2} catalyst that facilitates the reducibility of the support at low temperatures while the Ce-O-Ti surface interactions established in the Ce-modified TiO{sub 2} support decreases the reduction of TiO{sub 2} at high temperature. The changes in the support reducibility leads to significant differences in the WGS activity of the studied catalysts. Pt supported on Ce-modified TiO{sub 2} support exhibits better activity than those corresponding to individual CeO{sub 2} and TiO{sub 2}-supported catalysts. Additionally, the Ce-TiO{sub 2}-supported catalyst displays better stability at reaction temperatures higher than 573 K that observed on pure TiO{sub 2}-supported counterpart. Activity measurements, when coupled with the physicochemical characterization of catalysts suggest that the modifications in the surface reducibility of the support play an essential role in the enhancement of activity and stability observed when Pt is supported on the Ce-modified TiO{sub 2} substrate.

  1. The CompuTer SCienCe program The bachelor of science degree in computer science

    E-Print Network [OSTI]

    Suzuki, Masatsugu

    The CompuTer SCienCe program The bachelor of science degree in computer science offered in the fundamentals of computer science, elements of practical application and an appreciation for liberal learning to work within various areas of computer science and to work across other disciplines. program edu

  2. Daylight photocatalysis performance of biomorphic CeO{sub 2} hollow fibers prepared with lens cleaning paper as biotemplate

    SciTech Connect (OSTI)

    Qian, Junchao; Chen, Feng [Department of Material Science and Engineering, Jiangsu University, 212013 Zhenjiang (China)] [Department of Material Science and Engineering, Jiangsu University, 212013 Zhenjiang (China); Wang, Fang; Zhao, Xiaobing [Department of Materials Science and Engineering, Changzhou University, 213164 Changzhou (China)] [Department of Materials Science and Engineering, Changzhou University, 213164 Changzhou (China); Chen, Zhigang, E-mail: ziyou1900@gmail.com [Department of Material Science and Engineering, Jiangsu University, 212013 Zhenjiang (China) [Department of Material Science and Engineering, Jiangsu University, 212013 Zhenjiang (China); Jiangsu Key Laboratory for Environment Functional Materials, 215009 Suzhou University of Science and Technology, Suzhou (China); State Key laboratory of Crystal Material, Shandong University, 250100 Jinan (China)

    2012-08-15

    Highlights: ? A novel, simple and eco-friendly approach for hierarchical, biomorphic CeO{sub 2} hollow fibers with mesoporous tube walls is presented by using paper as template. ? The biomorphic CeO{sub 2} fibers was composed of nanosheets with bimodal pore-size mesoporous distribution and exhibited high light-harvesting under sunlight irradiation. ? The CeO{sub 2} microfibers biomimicking the natural plant structures have promising application for photodegradation of organic pollutants in water. -- Abstract: Hierarchical, biomorphic CeO{sub 2} hollow fibers with mesoporous tube walls have been fabricated using lens cleaning paper as biotemplates. After sintered at 550 °C in air, the cellulosic fibers of paper were converted into micro-tubes composing of CeO{sub 2} crystallites with grain size about 8 nm. The photocatalytic activity of the CeO{sub 2} fibers was evaluated by photodegradation efficiency of methylene blue in aqueous solution under daylight irradiation. The characterized results show that the CeO{sub 2} fibers faithfully replicated micro-fibrous structure derived from original template and possessed dramatic enhanced photocatalytic activity compared with bulk CeO{sub 2}. This simple biotemplate method provides a cost-effective and eco-friendly route to obtain high performance photocatalysts.

  3. Temperature-dependent luminescence of Ce3+ in gallium-substituted

    E-Print Network [OSTI]

    Walker, D. Greg

    were prepared via a simple combustion synthe- sis method and had the formula Y2.97Ce0.03 3 Al1-xGax 5O width of 0.1 nm. The pulse width was 4ns at a characteristic energy of 300 J. The excitation pulse

  4. Aging behavior and precipitates analysis of the CuCrZrCe alloy Yi Zhang a,b,d,n

    E-Print Network [OSTI]

    Volinsky, Alex A.

    Aging behavior and precipitates analysis of the Cu­Cr­Zr­Ce alloy Yi Zhang a,b,d,n , Alex A October 2015 Keywords: Cu­Cr­Zr­Ce alloy Cold rolling Aging treatment Microstructure Physical properties rolling and aging for 16 h at 300 °C. Under the same aging conditions, without cold rolling, the hardness

  5. Author's personal copy Prepration and photoluminescence properties of Ce doped lutetium silicate

    E-Print Network [OSTI]

    Cao, Guozhong

    Author's personal copy Prepration and photoluminescence properties of Ce doped lutetium silicate: Received 3 September 2010 Accepted 2 November 2010 Available online 12 November 2010 Keywords: Lutetium silicate Cerium Solegel Photoluminescence Lu2SiO5 a b s t r a c t Cerium doped lutetium silicate powders

  6. Charge dynamics of Ce-based compounds: Connection between the mixed valent and Kondo-insulator states

    SciTech Connect (OSTI)

    Bucher, B. [Laboratorium fuer Festkoerperphysik, Eidgenoessische Technische Hochschule Zuerich, 8093 Zuerich (Switzerland)] [Laboratorium fuer Festkoerperphysik, Eidgenoessische Technische Hochschule Zuerich, 8093 Zuerich (Switzerland); Schlesinger, Z. [IBM, Thomas J. Watson Research Center, Yorktown Heights, New York 10958 (United States)] [IBM, Thomas J. Watson Research Center, Yorktown Heights, New York 10958 (United States); Mandrus, D.; Fisk, Z.; Sarrao, J. [Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)] [Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States); DiTusa, J.F.; Oglesby, C.; Aeppli, G.; Bucher, E. [AT& T Bell Laboratories, Murray Hill, New Jersey 07974 (United States)] [AT& T Bell Laboratories, Murray Hill, New Jersey 07974 (United States)

    1996-02-01

    The reflectivities of the mixed-valent compounds CeSn{sub 3} and CePd{sub 3} have been measured to obtain the optical conductivity as a function of temperature. Both compounds show a renormalization of the low-energy Drude conductivity at low temperatures. In addition, for the low-carrier-density compound CePd{sub 3}, but not for high-carrier-density CeSn{sub 3}, substantial spectral weight lost from the conductivity below 1000 cm{sup {minus}1} reappears in the frequency range 2000{endash}10000 cm{sup {minus}1}, indicating that CePd{sub 3} can be considered a lightly doped Kondo insulator. {copyright} {ital 1996 The American Physical Society.}

  7. (U) Equation of State and Compaction Modeling for CeO2

    SciTech Connect (OSTI)

    Fredenburg, David A.; Chisolm, Eric D.

    2014-10-20

    Recent efforts have focused on developing a solid-liquid and three-phase equation of state (EOS) for CeO2, while parallel experimental efforts have focused on obtaining high-fidelity Hugoniot measurements on CeO2 in the porous state. The current work examines the robustness of two CeO2 SESAME equations of state, a solid-liquid EOS, 96170, and a three-phase EOS, 96171, by validating the EOS against a suite of high-pressure shock compression experiments on initially porous CeO2. At lower pressures compaction is considered by incorporating a two-term exponential form of the P-compaction model, using three separate definitions for ?(P). Simulations are executed spanning the partially compacted and fully compacted EOS regimes over the pressure range 0.5 - 109 GPa. Comparison of calculated Hugoniot results with those obtained experimentally indicate good agreement for all definitions of ?(P) with both the solid-liquid and three-phase EOS in the low-pressure compaction regime. At higher pressures the three-phase EOS does a better job at predicting the measured Hugoniot response, though at the highest pressures EOS 96171 predicts a less compliant response than is observed experimentally. Measured material velocity profiles of the shock-wave after it has transmitted through the powder are also compared with those simulated using with solid-liquid and three-phase EOS. Profiles lend insight into limits of the current experimental design, as well as the threshold conditions for the shock-induced phase transition in CeO2.

  8. c 2011 Kurchi Subhra Hazra GROUP FORMATION AND COMMUNICATION IN MOBILE WI-FI

    E-Print Network [OSTI]

    Nahrstedt, Klara

    c 2011 Kurchi Subhra Hazra #12;GROUP FORMATION AND COMMUNICATION IN MOBILE WI-FI NETWORKS BY KURCHI of Science in Computer Science in the Graduate College of the University of Illinois at Urbana-Champaign, 2011 Urbana, Illinois Adviser: Professor Klara Nahrstedt #12;ABSTRACT Use of Wi-Fi-capable mobile

  9. Synthesis of Transient Climate Evolution of the last 21-kyr (SynTraCE-21)

    SciTech Connect (OSTI)

    Zhengyu Liu

    2011-05-06

    Climate evolution in the last 21,000 years provides critical observations for testing state-of-the-art climate models on the simulation of climate evolution and abrupt climate changes. Proxy evidences and new modeling activities have led to rapid advances in our understanding of climate change for this past time period. This funding helps to support the first international SynTraCE-21k workshop at Mount Hood, Oregon from 10-13 October, 2010.

  10. Specific heat of CeRhIn5: Pressure-driven evolution of the ground state from antiferromagnetism to superconductivity

    E-Print Network [OSTI]

    2001-01-01

    Specific Heat of CeRhIn5: Pressure–Driven Evolution of the32306 Measurements of the specific heat of antiferromagneticsee text). Fig. 2. (a) The specific heat, for representative

  11. INFORMATION SESSION ON INTERNSHIP OPPORTUNITIES AT UNITED NATIONS ENVIRONMENT PROGRAMME FINANCE INITIATIVE (UNEP FI)

    E-Print Network [OSTI]

    Yamamoto, Hirosuke

    and Environmental, Social and Governance (ESG) challenges, and the role financial institutions could play for a more FI UNEP FI is a global partnership between UNEP and the financial sector. Over 200 institutions, including banks, insurers and fund managers, work with UNEP to understand the impacts of environmental

  12. Effect of Sodium on the Catalytic Properties of VOx/CeO2 Catalysts for Oxidative Dehydrogenation of Methanol

    SciTech Connect (OSTI)

    Li, Yan; Wei, Zhehao; Sun, Junming; Gao, Feng; Peden, Charles HF; Wang, Yong

    2013-03-21

    A series of VOx/CeO2 catalysts with various sodium loadings (Na/V ratio from 0 to 1) has been studied for oxidative dehydrogenation (ODH) of methanol. The effect of sodium on the surface structure, redox properties, and surface acidity/basicity of VOx/CeO2 was investigated using hydrogen temperature-programmed reduction (H2-TPR), Raman spectroscopy, and Diffuse Reflectance Infrared Fourier Transform spectroscopy (DRIFT). The experimental results indicate that the effect of sodium on VOx/CeO2 is highly dependent on the Na/V ratio. At a low Na/V ratio (Na/V<0.25), sodium addition only slightly decreases the redox properties of VOx/CeO2 and has little effect on its activity and selectivity to formaldehyde, even though the Brönsted acidity is almost completely eliminated at a Na/V ratio of 0.25. At a high Na/V ratio (Na/V>0.25), sodium addition greatly alters the nature of the active sites by V-O-Ce bond cleavage and V-O-Na bond formation, leading to significantly reduced activity of the VOx/CeO2 catalysts. At Na/V>0.25, the selectivity to formaldehyde also decreases with increasing Na/V ratio due to: (1) the suppressed reducibility of VOx, and (2) increased basicity leading to increased CO2.

  13. Structure and magnetic properties of Ce?(Ni/Al/Ga)??—A new phase with the La?Al?? structure type

    SciTech Connect (OSTI)

    Janka, Oliver; Shang, Tian; Baumbach, Ryan E.; Bauer, Eric D.; Thompson, Joe D.; Kauzlarich, Susan M.

    2015-03-01

    Single crystals of Ce?(Ni/Al/Ga)?? were obtained from an Al flux reaction. Single crystals of the title compound crystallizing in the orthorhombic space group Immm (No. 71, Z = 2) with a = 436.38(14), b = 1004.5(3) and c = 1293.4(4) pm. This is a standardized unit cell of the previously published La?Al?? structure type. Wavelength dispersive microprobe provides the composition of Ce?.?????Ni?.?????Al?.?????Ga?.?????. Single crystal refinement provides the composition Ce?Ni?.??Al?.??Ga?.?? with substitution of the Ni and Ga on the Al1 and Al4 sites with the Al2 and Al3 solely occupied by Al. Magnetic susceptibility measurements reveal antiferromagnetic ordering with TN = 4.8 K and there is no evidence for a ferromagnetic ordering that has been reported for Ce?Al??. The effective magnetic moment was found to be ?eff = 1.9?B/Ce, which is lower than the expected value for trivalent Ce (2.54?B/Ce).

  14. Magnitude of the magnetic exchange interaction in the heavy-fermion antiferromagnet CeRhIn5

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

    Das, Pinaki; Lin, S. -Z.; Ghimire, N. J.; Huang, K.; Ronning, F.; Bauer, E. D.; Thompson, J. D.; Batista, C. D.; Ehlers, G.; Janoschek, M.

    2014-12-08

    We have used high-resolution neutron spectroscopy experiments to determine the complete spin wave spectrum of the heavy-fermion antiferromagnet CeRhIn?. The spin wave dispersion can be quantitatively reproduced with a simple frustrated J?-J? model that also naturally explains the magnetic spin-spiral ground state of CeRhIn? and yields a dominant in-plane nearest-neighbor magnetic exchange constant J?=0.74(3) meV. Our results lead the way to a quantitative understanding of the rich low-temperature phase diagram of the prominent CeTIn? (T = Co, Rh, Ir) class of heavy-fermion materials.

  15. WiFi Localization Experiments with an Unmanned Aircraft System

    E-Print Network [OSTI]

    Frew, Eric W.

    .15.4, specifically the ZigBee standard. Their work utilized the ratio of signal strength measurements between two to localize ZigBee radios. This paper utilizes the unscented Kalman filter (UKF)8 to perform WiFi source geo

  16. Preparation of new morphological ZnO and Ce-doped ZnO

    SciTech Connect (OSTI)

    Chelouche, A.; Djouadi, D.; Aksas, A. [Laboratoire de Génie de l'Environnement, Université A. Mira de Béjaia, Route de Targua Ouzemmour Béjaia (Algeria)

    2013-12-16

    ZnO micro-tori and cerium doped hexangulars ZnO have been prepared by the sol-gel method under methanol hypercritical conditions of temperature and pressure. X-ray diffraction (XRD) measurement has revealed the high crystalline quality and the nanometric size of the samples. Scanning electron microscopy (SEM) has shown that the ZnO powder has a torus-like shape while that of ZnO:Ce has a hexangular-like shape, either standing free or inserted into the cores of ZnO tori. Transmission electron microscopy (TEM) has revealed that the ZnO particles have sizes between 25 and 30 nm while Ce-doped ZnO grains have diameters ranging from 75 nm to 100 nm. Photoluminescence spectra at room temperature of the samples have revealed that the introduction of cerium in ZnO reduces the emission intensity lines, particularly the ZnO red and green ones.

  17. Impact of the CE mark approval on exit opportunities and validation for early stage medical device companies

    E-Print Network [OSTI]

    Kothari, Ashish (Ashish Shrikant)

    2011-01-01

    The aim of this thesis was to look at the impact of acquiring the CE marking approval on the outcome of early stage medical device companies, specifically its impact on strategic acquisition opportunities and on valuation. ...

  18. ECEEE 2011 SUMMER STUDY EnERgY EffiCiEnCY fiRST: ThE foUnDaTion of a low-CaRbon SoCiETY 2037 The significance of difference

    E-Print Network [OSTI]

    MacDonald, Mark

    ECEEE 2011 SUMMER STUDY · EnERgY EffiCiEnCY fiRST: ThE foUnDaTion of a low-CaRbon SoCiETY 2037 The significance of difference: Understanding variation in household energy consumption Janine Morley School@comp.lancs.ac.uk Keywords socio-technical, energy behaviour, interaction, consumption dynamics, demand patterns, domestic

  19. CRAD, NNSA - Conduct of Engineering (CE) | 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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirley Ann Jackson About UsEnergy MarketingAsset Score00.4 (12-84)ThisFeaturedDepartment

  20. Making the Best Use of What you Have Asia Intellectual Capital Alliances a te ectua Cap ta a ce

    E-Print Network [OSTI]

    BYOBBYOB ­ Making the Best Use of What you Have Asia Intellectual Capital Alliances a te ectua Cap ta a ce 24 October 2011 Copyright © 2011 Asia Intellectual Capital Alliance. All rights reserved. #12

  1. Effect of oxygen vacancy on half metallicity in Ni-doped CeO{sub 2} diluted magnetic semiconductor

    SciTech Connect (OSTI)

    Saini, Hardev S. Saini, G. S. S.; Singh, Mukhtiyar; Kashyap, Manish K.

    2015-05-15

    The electronic and magnetic properties of Ni-doped CeO{sub 2} diluted amgentic semiconductor (DMS) including the effect of oxygen vacancy (V{sub o}) with doping concentration, x = 0.125 have been calculated using FPLAPW method based on Density Functional Theory (DFT) as implemented in WIEN2k. In the present supercell approach, the XC potential was constructed using GGA+U formalism in which Coulomb correction is applied to standard GGA functional within the parameterization of Perdew-Burke-Ernzerhof (PBE). We have found that the ground state properties of bulk CeO{sub 2} compound have been modified significantly due to the substitution of Ni-dopant at the cation (Ce) site with/without V{sub O} and realized that the ferromagnetism in CeO{sub 2} remarkably depends on the V{sub o} concentrations. The presence of V{sub o}, in Ni-doped CeO{sub 2}, can leads to strong ferromagnetic coupling between the nearest neighboring Ni-ions and induces a HMF in this compound. Such ferromagnetic exchange coupling is mainly attributed to spin splitting of Ni-d states, via electrons trapped in V{sub o}. The HMF characteristics of Ni-doped CeO{sub 2} including V{sub o} makes it an ideal material for spintronic devices.

  2. Golden Opportunity: Order (2014-CE-20003) | Department of Energy

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

    Golden Opportunity had failed to certify that certain models of room air conditioners, central air conditionersheat pumps, and residential clothes washers comply with the...

  3. UNIVERSITY OF CALIFORNIA, BERKELEY CE212 Spring 2006 Environmental Engineering

    E-Print Network [OSTI]

    Hermanowicz, Slawomir W.

    Engin TD430 .W375 2005. Reference Readings: Design of Municipal Wastewater Treatment Plants. Water and wastewater treatment, and water reclamation: separation and transformation technologies (sedimentation, membrane processes, oxidation, biodegradation, activated sludge, biofilm reactors, biological treatment

  4. LG: Proposed Penalty (2015-CE-14022) | Department of Energy

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

    January 15, 2015 DOE alleged in a Notice of Proposed Civil Penalty that LG Electronics USA, Inc. failed to certify various refrigerator-freezer basic models as compliant with the...

  5. EIS-0497: CE FLNG Project, Plaquemines Parish, Louisiana | Department of

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:FinancingPetroleum Based|DepartmentStatement |toDepartment of Energy Notice of

  6. EIS-0497: CE FLNG Project, Plaquemines Parish, Louisiana | Department of

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i n cEnergy (AZ, CA, CO,Department of EnergyEnergy Summary The

  7. Barron: Order (2013-CE-48004) | 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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i n c i p a l De p uBUS SERVICE SUBSIDIESDepartment of EnergyJuly 15, 2015

  8. Barron: Proposed Penalty (2013-CE-48004) | 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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i n c i p a l De p uBUS SERVICE SUBSIDIESDepartment of EnergyJuly 15,

  9. Atlas Lighting: Order (2015-CE-48001) | 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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i n c i p a l De p u tCorporationIt's PotentialDepartment ofEnergy

  10. Atlas Lighting: Proposed Penalty (2015-CE-48001) | 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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i n c i p a l De p u tCorporationIt's PotentialDepartment ofEnergy5 DOE

  11. Sanyo Electric: Order (2010-CE-1210) | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankADVANCED MANUFACTURINGEnergy BillsNo. 195 -RobSSL INDepartment of Energy San10

  12. Distinctive Appliances: Order (2015-CE-14019) | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:FinancingPetroleum Based| Department8,Department of Energy2EM's CleanupPower

  13. Eurodib: Order (2014-CE-45001) | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:FinancingPetroleum12, 2015 InfographiclighbulbsDepartment ofServices3ErnestCorporateOrder

  14. Eurodib: Proposed Penalty (2014-CE-45001) | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:FinancingPetroleum12, 2015 InfographiclighbulbsDepartment ofServices3ErnestCorporateOrderProposed

  15. Sunpentown: Order (2012-CE-1505) | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX E LIST OF APPLICABLEStatutory Authority forPerk | Department

  16. Thermoelectric Couple Demonstration of (In, Ce)-based Skutterudite

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankADVANCEDInstallers/ContractorsPhotovoltaicsState ofSavings for Specific Measures 51Materials for

  17. Maxlite: Order (2010-CE-2701) | 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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i nAand DOE Safetyof Energy ThisSitesStorage CenterEngine | Department

  18. Maxlite: Order (2015-CE-27018) | 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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i nAand DOE Safetyof Energy ThisSitesStorage CenterEngine | Department DOE

  19. Maxlite: Proposed Penalty (2015-CE-27018) | 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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i nAand DOE Safetyof Energy ThisSitesStorage CenterEngine | Department

  20. Bull Outdoor Products: Order (2015-CE-14014) | 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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i n c i p a l DeInsulation at the EdgeBUILDINGS-TO-GRID

  1. Atosa: Order (2015-CE-42037) | 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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i n c i p a l De p u tCorporationIt's PotentialDepartmentAtmosphereAugust 31,

  2. Atosa: Proposed Penalty (2015-CE-42037) | 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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i n c i p a l De p u tCorporationIt's PotentialDepartmentAtmosphereAugust

  3. Curtis: Order (2015-CE-14021) | 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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i n c i p aDepartmentEnergyEvery Thanksgiving,isjpgcurrentProjects< Back5

  4. Absocold: Order (2010-CE-1212) | 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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i n c i p a l De p u t y A s sconveyance(EPACT 2005) and the Energy

  5. Almo: Order (2012-CE-1416) | 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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i n c i p a l De p u t y AEfficiency Rebate Programs |EfficiencyEfficiencyDOE

  6. Hydrides of CeNi/sub 5/, MmNi/sub 5/, Ca/sub 0/ /sub 2/(Ce/sub 0/ /sub 65/Mm/sub 0/ /sub 35/)/sub 0/ /sub 8/Ni/sub 5/, Ca/sub 0/ /sub 2/Ce/sub 0/ /sub 8/Ni/sub 5/, Ca/sub 0/ /sub 2/Mm/sub 0/ /sub 8/Ni/sub 5/, and mixed CeNi/sub 5//MmNi/sub 5/

    SciTech Connect (OSTI)

    Lakner, J.F.; Chow, T.S.

    1982-09-01

    Six intermetallic alloys (CeNi/sub 5/, MmNi/sub 5/, Ca/sub 0/ /sub 2/(Ce/sub 0/ /sub 65/Mm/sub 0/ /sub 35/)/sub 0/ /sub 8/Ni/sub 5/, Ca/sub 0/ /sub 2/Ce/sub 0/ /sub 8/Ni/sub 5/, Ca/sub 0/ /sub 2/Mm/sub 0/ /sub 8/Ni/sub 5/, and a mixed alloy, CeNi/sub 5//MmNi/sub 5/) were investigated with respect to their suitability to provide high hydrogen capacity and their potential for use in providing substantial hydrogen pressure at both low and high temperatures. A second phase of our investigation dealt with ball-milling and hydriding and dehydriding cycles to produce fine particles for use in hydride powder transfer studies. A summary of several Van't Hoff plots is also included for hydride-forming alloys.

  7. XRD, lead equivalent and UV-VIS properties study of Ce and Pr lead silicate glasses

    SciTech Connect (OSTI)

    Alias, Nor Hayati, E-mail: norhayati@nuclearmalaysia.gov.my; Abdullah, Wan Shafie Wan, E-mail: norhayati@nuclearmalaysia.gov.my; Isa, Norriza Mohd, E-mail: norhayati@nuclearmalaysia.gov.my; Isa, Muhammad Jamal Md, E-mail: norhayati@nuclearmalaysia.gov.my; Zali, Nurazila Mat; Abdullah, Nuhaslinda Ee [Malaysian Nuclear Agency, 43000, Bangi, Kajang, Selangor (Malaysia); Muhammad, Azali [Malaysian Society for Non-Destructive Testing (Malaysia)

    2014-02-12

    In this work, Cerium (Ce) and Praseodymium (Pr) containing lead silicate glasses were produced with 2 different molar ratios low (0.2 wt%) and high (0.4wt%). These types of glasses can satisfy the characteristics required for radiation shielding glasses and minimize the lead composition in glass. The radiation shielding properties of the synthesized glasses is explained in the form of lead equivalent study. The XRD diffraction and UV-VIS analysis were performed to observe the structural changes of the synthesis glasses at 1.5 Gy gamma radiation exposures.

  8. Surface-structure sensitivity of CeO2 nanocrystals in photocatalysis and enhancing the reactivity with nanogold

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

    Lei, Wanying; Zhang, Tingting; Gu, Lin; Liu, Ping; Rodriguez, José A.; Liu, Gang; Liu, Minghua

    2015-06-19

    Structure–function correlations are a central theme in heterogeneous (photo)catalysis. In this research, using aberration-corrected scanning transmission electron microscopy (STEM), the atomic surface structures of well-defined one-dimensional (1D) CeO2 nanorods (NRs) and 3D nanocubes (NCs) are directly visualized at subangstrom resolution. CeO2 NCs predominantly expose the {100} facet, with {110} and {111} as minor cutoff facets at the respective edges and corners. Notably, the outermost surface layer of the {100} facet is nearly O-terminated. Neither surface relaxations nor reconstructions on {100} are observed, indicating unusual polarity compensation, which is primarily mediated by near-surface oxygen vacancies. The surface of CeO2 NRs ismore »highly stepped, with the enclosed {110} facet exposing Ce cations and O anions on terraces. On the basis of STEM profile-view imaging and electronic structure analysis, the photoreactivity of CeO2 nanocrystals toward aqueous methyl orange degradation under UV is revealed to be surface-structure-sensitive, following the order: {110} >> {100}. The underlying surface-structure sensitivity can be attributed to the variation in low-coordinate surface cerium cations between {110} and {100} facets. To further enhance light absorption, Au nanoparticles (NPs) are deposited on CeO2 NRs to form Au/CeO2 plasmonic nanocomposites, which dramatically promotes the photoreactivity that is Au particle size- and excitation light wavelength-dependent. The mechanisms responsible for the enhancement of photocatalytic activity are discussed, highlighting the crucial role of photoexcited charge carrier transfer.« less

  9. DFT+U Study of CeO2 and Its Native Defects

    E-Print Network [OSTI]

    Huang, Bolong; Gillen, Roland; Robertson, John

    2014-10-14

    , Frenkel defect, pseudopotential transferability, oxidation catalyst 1. Introduction CeO2 is an important lanthanide oxide which is widely used as an oxygen buffer in car exhaust catalysts1, as a fast ion conductor in solid state fuel cells2, as a... as optimization of pseudopotentials47. The PBE functional was chosen for PBE+U calculations with a kinetic cutoff energy of 750eV, which expands the valence electrons states in a plane-wave basis set. The ensemble DFT (EDFT) method of Marzari et al48 is used...

  10. Pulse studies to decipher the role of surface morphology in CuO/CeO? nanocatalysts for the water gas shift reaction

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

    Rodriguez, Jose A.; Zhao, Fuzhen; Liu, Zongyuan; Xu, Wenqian; Yao, Siyu; Si, Rui; Johnston-Peck, Aaron C.; Martinez-Arias, Arturo; Hanson, Jonathan C.; Senanayake, Sanjaya D.

    2015-01-23

    The water-gas shift reaction (WGS, CO + H?O ? CO?) was studied over CuO/CeO? catalysts with two different ceria particle morphohologies, in the form of nanospheres (ns) and nanocubes (nc). To understand the strong dependence of the WGS reaction activity on the ceria nanoshapes, pulses of CO (without and with water vapor) were employed during in situ X-ray diffraction (XRD) and X-ray absoprtion near edge structure (XANES) measurements done to characterize the catalysts. The results showed that CuO/CeO? (ns) exhibited a substantially better activity than CuO/CeO? (nc). The higher activity was associated with the unique properties of CuO/CeO? (ns), suchmore »as the easier reduction of highly dispersed CuO to metallic Cu, the stability of metallic Cu and a larger concentration Ce³? in CeO? (ns).« less

  11. Pulse studies to decipher the role of surface morphology in CuO/CeO? nanocatalysts for the water gas shift reaction

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

    Rodriguez, Jose A. [Brookhaven National Lab. (BNL), Upton, NY (United States); Zhao, Fuzhen [South-Central Univ. for Nationalities, Wuhan, Hubei (China); Brookhaven National Lab., Upton, NY (United States); Liu, Zongyuan [Brookhaven National Lab. (BNL), Upton, NY (United States); Xu, Wenqian [Brookhaven National Lab. (BNL), Upton, NY (United States); Yao, Siyu [Brookhaven National Lab. (BNL), Upton, NY (United States); Si, Rui [Brookhaven National Lab. (BNL), Upton, NY (United States); Johnston-Peck, Aaron C. [Brookhaven National Lab. (BNL), Upton, NY (United States); Martinez-Arias, Arturo [Inst. de Catalisis y Petroleoquimica, Consejo Superior de Investigaciones Cientificas, Madrid (Spain); Hanson, Jonathan C. [Brookhaven National Lab. (BNL), Upton, NY (United States); Senanayake, Sanjaya D. [Brookhaven National Lab. (BNL), Upton, NY (United States)

    2015-03-01

    The water-gas shift reaction (WGS, CO + H?O ? CO?) was studied over CuO/CeO? catalysts with two different ceria particle morphohologies, in the form of nanospheres (ns) and nanocubes (nc). To understand the strong dependence of the WGS reaction activity on the ceria nanoshapes, pulses of CO (without and with water vapor) were employed during in situ X-ray diffraction (XRD) and X-ray absoprtion near edge structure (XANES) measurements done to characterize the catalysts. The results showed that CuO/CeO? (ns) exhibited a substantially better activity than CuO/CeO? (nc). The higher activity was associated with the unique properties of CuO/CeO? (ns), such as the easier reduction of highly dispersed CuO to metallic Cu, the stability of metallic Cu and a larger concentration Ce³? in CeO? (ns).

  12. Influence of solvent on the morphology and photocatalytic properties of ZnS decorated CeO{sub 2} nanoparticles

    SciTech Connect (OSTI)

    Raubach, Cristiane W. Polastro, Lisânias; Ferrer, Mateus M.; Perrin, Andre; Perrin, Christiane; Albuquerque, Anderson R.; Buzolin, Prescila G. C.; Sambrano, Julio R.; Santana, Yuri B. V. de; Varela, José A.; Longo, Elson

    2014-06-07

    Herein, we report a theoretical and experimental study on the photocatalytic activity of CeO{sub 2} ZnS, and ZnS decorated CeO{sub 2} nanoparticles prepared by a microwave-assisted solvothermal method. Theoretical models were established to analyze electron transitions primarily at the interface between CeO{sub 2} and ZnS. As observed, the particle morphology strongly influenced the photocatalytic degradation of organic dye Rhodamine B. A model was proposed to rationalize the photocatalytic behavior of the prepared decorated systems taking into account different extrinsic and intrinsic defect distributions, including order-disorder effects at interfacial and intra-facial regions, and vacancy concentration.

  13. Extreme Climate Event Trends: The Data Mining and Evaluation of the A1FI Scenario for 2000???2100

    SciTech Connect (OSTI)

    Erickson III, David J; Ganguly, Auroop R; Steinhaeuser, Karsten J K; Branstetter, Marcia L; Oglesby, Robert; Hoffman, Forrest M; Buja, Lawrence

    2008-01-01

    The authors discuss the implications and resulting alterations of the hydrologic cycle as Earth climate evolves from 2000-2100. Climate simulations based on the assumptions implicit in the A1F1 scenario for the period 2000-2100 using CCSM3 are analyzed. In particular, we will assess the changes in the surface latent and sensible heat energy budget, the Indian regional water budgets including trends in the timing and duration of the Indian monsoon and the resulting impacts on mean river flow and hydroelectric power generation potential. These analyses will also be examined within the context of heat index, droughts, floods and related estimates of societal robustness and resiliency. We will interpret these new A1F1 results within the context of the previous climate simulations based on the SRES A2 and B1 scenarios forced with land cover and atmospheric CO2. Analyses of historical records in the context of the Indian Monsoon Rainfall (IMR) have suggested an evolving relation of IMR with natural climate variability caused by El Nino events. We will report on the combined effects of natural climate variability and global warming on IMR and assess the trend of extreme rain and temperature events in a warming environment.

  14. Replacing cellular with WiFi direct communication for a highly interactive, high bandwidth multiplayer game

    E-Print Network [OSTI]

    Ortiz, Pablo (Pablo Jose)

    2013-01-01

    The objective of this work is to explore the benefits of replacing cellular with Wi-Fi Direct communication in mobile applications. Cellular connections consume significant power on mobile devices and are too slow for many ...

  15. ComFiM: A Cooperative Serious Game to Encourage the Development of Communicative Skills between Children with Autism

    E-Print Network [OSTI]

    Barbosa, Alberto

    Children with Autism Paula Ceccon Ribeiro Bruno Ba`ere Pederassi Lomba de Araujo Alberto Raposo Department, abraposo}@inf.puc-rio.br Abstract--About 50% of people with autism have problems in developing any kind with autism often have in the communication field, this paper presents the development of a game called Com

  16. 88 JOURNAL OF WEATHER MODiFiCATiON vOLUME 43 -TECHNICAL NOTES -CORRESPONDENCE -BOOK REVIEW

    E-Print Network [OSTI]

    Rhode Island, University of

    to understand the causal mechanisms for storm weakening at very high concentrations of CCN as storm rainfall troposphere. Research under HAMP has also spun-off a strategy for parameterizing sea-spray generation of freez- ing) and ultimately enhanced precipitation and low level cooling (evaporation). The increase

  17. Uni ted States DepartrfJent of the Interior Fi:;h and Wilci.life Service

    E-Print Network [OSTI]

    of the Alaska salmon fisheries. Part III: Prince William Sound, Copper River, and Bering River. By Willis H. Rich and Edward M. Ball. Issued 1932. Vol. 47, i + p. 187-247, 10 figs., 13 tables. Sensory stimalation., 1 table. Fluctuations in the supply of herring, Clupea pallasii, in Prince William Sound, Alaska

  18. BaCe1-xPdxO3-(0 e x e 0.1): Redox Controlled Ingress and Egress of Palladium in a Perovskite

    E-Print Network [OSTI]

    Rappe, Andrew M.

    BaCe1-xPdxO3- (0 e x e 0.1): Redox Controlled Ingress and Egress of Palladium in a Perovskite Jun-ray photoelectron spectroscopy that Pd2+ ions can be substituted for Ce in perovskite BaCeO3 and that, under description of the structure. The Pd2+-containing perovskite phases extrude elemental face-centered cubic

  19. Structure and magnetic properties of Ba{sub 5}Ce{sub 1.25}Mn{sub 3.75}O{sub 15}, a new 10H-polytype in the Ba-Ce-Mn-O system

    SciTech Connect (OSTI)

    Macias, Mario A.; Mentre, Olivier; Cuello, Gabriel J.; Gauthier, Gilles H.

    2013-02-15

    Based on the peculiar magnetic properties that are observed in pseudo one-dimensional manganites, we decided to synthesize the new Ba{sub 5}Ce{sub 1.25}Mn{sub 3.75}O{sub 15} compound. The preparation was performed by solid state reaction in air at about 1350 Degree-Sign C, for which we found that the compound crystallizes in a hexagonal symmetry with space group P6{sub 3}/mmc (No-194) and cell parameters a=b=5.7861(2) A and c=23.902(1) A. The structural description was correlated with neutron diffraction and bond valence calculations, confirming the presence of Ce{sup 4+} and Mn{sup 4+} segregated in the different crystallographic positions. Ba{sub 5}Ce{sub 1.25}Mn{sub 3.75}O{sub 15} displays evidence for strong AFM couplings already set at room temperature. The main arrangement of Mn{sup 4+} in magnetically isolated tetramers of face-sharing octahedra is responsible for a metamagnetic-like transition around 50 K. - Graphical abstract: The new Ba{sub 5}Ce{sub 1.25}Mn{sub 3.75}O{sub 15} polytype shows strong AFM couplings in magnetically isolated [Ce{sub 0.25}Mn{sub 3.75}O{sub 15}] tetramers of face-sharing octahedral, resulting in a metamagnetic-like transition around 50 K. Highlights: Black-Right-Pointing-Pointer Ba{sub 5}Ce{sub 1.25}Mn{sub 3.75}O{sub 15}, a new 10H polytype, has been prepared in the Ba-Ce-Mn-O system. Black-Right-Pointing-Pointer The compound crystallizes in the P6{sub 3}/mmc space group with (cchhh){sub 2} stacking sequence. Black-Right-Pointing-Pointer [Ce{sub 0.25}Mn{sub 3.75}O{sub 15}] tetramers are separated by [CeO{sub 6}] octahedra in the structure. Black-Right-Pointing-Pointer Instead of robust AFM ordering, a metamagnetic-like transition is found around 50 K.

  20. Electronic structure of the heavy-fermion caged compound Ce?Pd??X? (X = Si, Ge) studied by density functional theory and photoelectron spectroscopy

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

    Yamaoka, Hitoshi; Jarrige, Ignace; Schwier, Eike F.; Arita, Masashi; Shimada, Kenya; Tsujii, Naohito; Jiang, Jian; Hayashi, Hirokazu; Iwasawa, Hideaki; Namatame, Hirofumi; et al

    2015-03-30

    The electronic structure of Ce?Pd??X? (X = Si, Ge) has been studied using detailed density functional theory (DFT) calculations and high-resolution photoelectron spectroscopy (PES) measurements. The orbital decomposition of the electronic structure by DFT calculations indicates that Ce atoms at the (8c) site surrounded by 16 Pd atoms have a more localized nature and a tendency to be magnetic. Ce atoms in the (4a) site surrounded by 12 Pd and 6 X atoms, on the other, show only a negligible magnetic moment. In the photoemission valence-band spectra we observe a strong f? (Ce??) component with a small fraction of f¹more »(Ce³?) component. The spectral weight of f¹ component near the Fermi level Ce?Pd??Si? is stronger than that for Ce?Pd??Ge? at the 4d-4f resonance, suggesting stronger c-f hybridization in the former. This may hint to the origin of the large electronic specific coefficient of Ce?Pd??Si? compared to Ce?Pd??Ge?.« less

  1. Electronic structure of the heavy-fermion caged compound Ce3Pd20X6(X=Si,Ge) studied by density functional theory and photoelectron spectroscopy

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

    Yamaoka, Hitoshi; Schwier, Eike F.; Arita, Masashi; Shimada, Kenya; Tsujii, Naohito; Jarrige, Ignace; Jiang, Jian; Hayashi, Hirokazu; Iwasawa, Hideaki; Namatame, Hirofumi; et al

    2015-03-30

    The electronic structure of Ce?Pd??X? (X = Si, Ge) has been studied using detailed density functional theory (DFT) calculations and high-resolution photoelectron spectroscopy (PES) measurements. The orbital decomposition of the electronic structure by DFT calculations indicates that Ce atoms at the (8c) site surrounded by 16 Pd atoms have a more localized nature and a tendency to be magnetic. Ce atoms in the (4a) site surrounded by 12 Pd and 6 X atoms, on the other, show only a negligible magnetic moment. In the photoemission valence-band spectra we observe a strong f? (Ce??) component with a small fraction of f¹more »(Ce³?) component. The spectral weight of f¹ component near the Fermi level Ce?Pd??Si? is stronger than that for Ce?Pd??Ge? at the 4d-4f resonance, suggesting stronger c-f hybridization in the former. This may hint to the origin of the large electronic specific coefficient of Ce?Pd??Si? compared to Ce?Pd??Ge?.« less

  2. Growth and properties of heavy fermion CeCu{sub 2}Ge{sub 2} and CeFe{sub

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfate Reducing(Journal Article)lasers (Journal Article) | SciTechConnectbeyond(Journal Article)

  3. Energy Efficient Wi-Fi Management for Smart Devices

    E-Print Network [OSTI]

    Boutaba, Raouf

    Energy Efficient Wi-Fi Management for Smart Devices Jian Li, Jin Xiao, Huu Nhat Minh Nguyen§, James-Fi is a major supporting technology and as such, efficient energy management solutions are much needed Wi-Fi energy management is a very important practical problem for smart phones. As it stands today

  4. The effect of Ce{sup 4+} incorporation on structural, morphological and photocatalytic characters of ZnO nanoparticles

    SciTech Connect (OSTI)

    Kannadasan, N.; Shanmugam, N. Cholan, S.; Sathishkumar, K.; Viruthagiri, G.; Poonguzhali, R.

    2014-11-15

    We report a simple chemical precipitation method for the preparation of undoped and cerium doped ZnO nanocrystals. The concentration of cerium in the products can be controlled in the range of 0.025–0.125 mol. The structure and chemical compositions of the products were characterized by X-ray diffraction, X-ray photoelectron spectroscopy; energy dispersive spectrum and Fourier transform infrared spectroscopy. The results demonstrate that Ce{sup 4+} ions were successfully incorporated into the lattice position of Zn{sup 2+} ions in ZnO. The morphology of the products was analyzed by field emission scanning electron microscopy and confirmed by high resolution transmission electron microscope analysis. The optical properties of the products were studied by ultraviolet–visible and room temperature photoluminescence measurements. The photoluminescence emission spectra of Ce-doped ZnO showed enhanced visible emissions as a result of 5d ? 4f transition of cerium. In particular, a novel photocatalytic activity of the products was assessed using methylene blue. The obtained result reveals that Ce-doped products show higher reduction efficiency for methylene blue than the undoped ZnO. - Highlights: • Nanocrystals of ZnO and ZnO:Ce{sup 4+} were grown. • XPS results confirmed the incorporated cerium in tetravalence. • PL emission exhibited 5d ? 4f transition on cerium doping. • Doped ZnO decolorizes MB faster than undoped ZnO.

  5. Investigation of the physical properties of the tetragonal CeMAl4Si2 (M = Rh, Ir, Pt) compounds

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

    Ghimire, N. J.; Ronning, F.; Williams, D. J.; Scott, B. L.; Luo, Yongkang; Thompson, J. D.; Bauer, E. D.

    2014-12-15

    The synthesis, crystal structure and physical properties studied by means of x-ray diffraction, magnetic, thermal and transport measurements of CeMAl4Si2 (M = Rh, Ir, Pt) are reported, along with the electronic structure calculations for LaMAl4Si2 (M = Rh, Ir, Pt). These materials adopt a tetragonal crystal structure (space group P4/mmm) comprised of BaAl4 blocks, separated by MAl2 units, stacked along the c-axis. Both CeRhAl4Si2 and CeIrAl4Si2 order antiferromagnetically below TN1 = 14 and 16 K, respectively, and undergo a second antiferromagnetic transitition at lower temperature (TN2 = 9 and 14 K, respectively). CePtAl4Si2 orders ferromagnetically below TC = 3 Kmore »with an ordered moment of ?sat = 0.8 ?B for a magnetic field applied perpendicular to the c-axis. Electronic structure calculations reveal quasi-2D character of the Fermi surface.« less

  6. Superior performance of Ni-W-Ce mixed-metal oxide catalysts for ethanol steam reforming: Synergistic effects of W- and Ni-dopants

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

    Rodriguez, Jose A.; Liu, Zongyuan; Xu, Wenqian; Yao, Siyu; Johnson-Peck, Aaron C.; Zhao, Fuzhen; Michorczyk, Piotr; Kubacka, Anna; Stach, Eric A.; Fernandez-Garica, Marcos; et al

    2014-11-26

    The ethanol steam reforming (ESR) reaction was studied over a series of Ni-W-Ce oxide catalysts. The structures of the catalysts were characterized using in-situ techniques including X-ray diffraction, Pair Distribution Function, X-ray absorption fine structure and transmission electron microscopy; while possible surface intermediates for the ESR reaction were investigated by Diffuse Reflectance Infrared Fourier Transform Spectroscopy. In these materials, all the W and part of the Ni were incorporated into the CeO? lattice, with the remaining Ni forming highly dispersed nano NiO (more »The Ni-W-Ce systeme exhibited a much larger lattice strain than those seen for Ni-Ce and W-Ce. Synergistic effects between Ni and W inside ceria produced a substantial amount of defects and O vacancies that led to high catalytic activity, selectivity and stability (i.e. resistance to coke formation) during ethanol steam reforming.« less

  7. Effect of aging upon CE and B and W control rod drives

    SciTech Connect (OSTI)

    Grove, E.; Gunther, W.

    1992-05-01

    The effect of aging upon the Babcock & Wilcox (B&W) and Combustion Engineering (CE) Control Rod Drive (CRD) systems has been evaluated as part of the US NRC Nuclear Plant Aging Research (NPAR) program. Operating experience data for the 1980--1990 time period was reviewed to identify predominant failure modes, causes, and effects. These results, in conjunction with an assessment of component materials and operating environment, conclude that both systems are susceptible to age degradation. System failures have resulted in significant plant effects, including power reductions, plant shutdowns, scrams, and Engineered Safety Feature (ESF) actuation. Current industry inspection and maintenance practices were assessed. Some of these practices effectively address aging, while others do not.

  8. Effect of aging upon CE and B and W control rod drives

    SciTech Connect (OSTI)

    Grove, E.; Gunther, W.

    1992-01-01

    The effect of aging upon the Babcock Wilcox (B W) and Combustion Engineering (CE) Control Rod Drive (CRD) systems has been evaluated as part of the US NRC Nuclear Plant Aging Research (NPAR) program. Operating experience data for the 1980--1990 time period was reviewed to identify predominant failure modes, causes, and effects. These results, in conjunction with an assessment of component materials and operating environment, conclude that both systems are susceptible to age degradation. System failures have resulted in significant plant effects, including power reductions, plant shutdowns, scrams, and Engineered Safety Feature (ESF) actuation. Current industry inspection and maintenance practices were assessed. Some of these practices effectively address aging, while others do not.

  9. Thermal and magnetic properties of La-doped Ce1-yLayGe1.80 with 0

    E-Print Network [OSTI]

    Li, Jing

    Thermal and magnetic properties of La-doped Ce1-yLayGe1.80 with 0 Department of Physics, Temple University, Philadelphia, Pennsylvania 19122 J. A. Zan Jet Propulsion 2006 CeGex with 1.71 x 2.0 crystallizes in an orthorhombic structure and exhibits two magnetic

  10. Toward Customizable Wi-Fi

    E-Print Network [OSTI]

    Li, Chi-Yu

    2015-01-01

    of Energy-Efficient Settings . . . . . . . . . . . . . .21 EERA: Energy-Efficient RateAn Energy Efficiency Perspective . . . . . . . . . . . . .

  11. Toward Customizable Wi-Fi

    E-Print Network [OSTI]

    Li, Chi-Yu

    2015-01-01

    24 Dynamics of Energy-Efficient12 Energy Saving . . . . . . . . . . . . .21 EERA: Energy-Efficient Rate

  12. Toward Customizable Wi-Fi

    E-Print Network [OSTI]

    Li, Chi-Yu

    2015-01-01

    requirements for flows and mobile devices. Each is servedfor mobile applications and mobile devices is typicallydiverse requirements of mobile devices and applications in

  13. Enhanced Magneto-optic Kerr Effect and Magnetic Properties of CeY[subscript 2]Fe[subscript 5]O[subscript 12] Epitaxial Thin Films

    E-Print Network [OSTI]

    Kehlberger, Andreas

    The magnetic and magneto-optic properties of epitaxial CeY[subscript 2]Fe[subscript 5]O[subscript 12] (Ce ? YIG) and Y[subscript 3]Fe[subscript 5]O[subscript 12] (yttrium iron garnet or YIG) thin films grown by pulsed laser ...

  14. Toward Customizable Wi-Fi

    E-Print Network [OSTI]

    Li, Chi-Yu

    2015-01-01

    flow basis, while improving the energy efficiency of the 802.11n NIC for those battery-battery-constrained clients. • The credit/debit mechanism: It determines which flows

  15. Fi in Gulf Pidgin Arabic

    E-Print Network [OSTI]

    Potsdam, Eric; Alanazi, Mohammad

    2014-12-01

    Gulf Pidgin Arabic (GPA) is a simplified communication system established by the non-Arabic immigrants to Gulf countries in the Middle East. In the past decades, millions of people with no Arabic skills have come from countries such as Bangladesh...

  16. Unconventional behavior of the Ce3Pt23Si11 ferromagnet C. Opagiste,1,

    E-Print Network [OSTI]

    Boyer, Edmond

    23Si11 is in equilibrium with the non-centrosymetric heavy fermion superconductor CePt3Si, when and presents a heavy fermion supercon- ducting state at Tc = 750 mK. Many studies on the superconductivity

  17. LIMITATIONS ON THE RESOLUTION OF YAG:CE BEAM PROFILE MONITOR...

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

    performance to other diagnostics. 2 Experimental Set-up And Initial Results An aluminum-base target was constructed with the two YAG:Ce crystals (0.50 mm and 0.25 mm thick...

  18. Device Association Through Passive Wi-Fi Monitoring 

    E-Print Network [OSTI]

    Taghavi, Travis

    2013-09-28

    sensing node. Any reasonably powered computer, from a full desktop to a simple single-board computer, is powerful enough to perform the tasks necessary for this project. For ease of use and convenience, we employ Intel's Next Unit of Computing (NUC...) for use in data 6 collection. The NUC has sufficient power to perform the necessary operations, and has the advantage of a small form-factor. Since smartphones and laptops are ubiquitous and are commonly Wi-Fi enabled, they are used as the wireless...

  19. Local structure and polarization resistance of Ce doped SrMnO{sub 3} using extended x-ray fine structure analysis

    SciTech Connect (OSTI)

    Ryu, Jiseung; Lee, Heesoo, E-mail: heesoo@pusan.ac.kr [School of Materials Science and Engineering, Pusan National University, Busan 609-735 (Korea, Republic of)

    2014-09-15

    Changes to the local structure of Sr and Mn atoms in Sr{sub 1?x}Ce{sub x}MnO{sub 3} (SCM) according to increasing Ce content and the effect of the structural change on the polarization resistance of SCM were investigated. The reduction of manganese was confirmed by the absorption edge shift of the Mn K-edge toward lower energies. The noise of oscillation in extended X-ray absorption fine structure k{sup 3}? data at Mn K-edge reveals the distortion of the local structure of Mn atoms, and the peak that indicates the bonding length of Mn-O, Sr/Ce, and -Mn decreased with the addition of Ce content in Fourier transformations of the Mn K-edge. The distortion of the local structure at Mn atoms was affected by the reduced manganese ions having larger ionic radii than Mn{sup 4+}. Meanwhile, few distortions of local atomic structures of Sr atoms occurred, and the average nearest neighboring distances of Sr-O and Sr-Mn are ?2.13?Å and ?2.95?Å, respectively. The average bonding lengths of the Ce-O and Ce-Mn increased because the ionic radius of substituted Ce ion with 12 coordination number is smaller than that of Sr ion, which leads the reduction of Mn ions and the distortion of local structure at the substituted A-site. Therefore, we reasoned that the distortion of the local atomic structure at Mn atoms in MnO{sub 6} and Ce atoms in A-site is one of the causes for interrupting oxygen ion transfers as a geometric factor, which results in an increase in the polarization resistance of SCM within the Ce composition range from 10?mol.?% to 30?mol.?%.

  20. Search for pressure-induced superconductivity in CeFeAsO and CeFePO iron pnictides

    SciTech Connect (OSTI)

    Zocco, D. A. [University of California, San Diego; Baumbach, R. E. [University of California, San Diego; Hamlin, J. J. [University of California, San Diego; Janoschek, M. [University of California, San Diego; Lum, I. K. [University of California, San Diego; McGuire, Michael A [ORNL; Safa-Sefat, Athena [ORNL; Sales, Brian C [ORNL; Jin, Rongying [ORNL; Mandrus, David [ORNL; Jeffries, J. R. [Lawrence Livermore National Laboratory (LLNL); Weir, S. T. [Lawrence Livermore National Laboratory (LLNL); Vohra, Y. K. [University of Alabama, Birmingham; Maple, M. B. [University of California, San Diego

    2011-01-01

    The CeFeAsO and CeFePO iron pnictide compounds were studied via electrical transport measurements under high pressure. In CeFeAsO polycrystals, the magnetic phases involving the Fe and Ce ions coexist for hydrostatically applied pressures up to 15 GPa, and with no signs of pressure-induced superconductivity up to 50 GPa for the less hydrostatic pressure techniques. For the CeFePO single crystals, pressure further stabilizes the Kondo screening of the Ce 4f-electron magnetic moments.

  1. Q-dependence of the spin fluctuations in the intermediate valence compound CePd3

    SciTech Connect (OSTI)

    Fanelli, V. R.; Lawrence, J. M.; Goremychkin, E. A.; Osborn, R.; Bauer, E. D.; McClellan, K. J.; Thompson, J. D.; Booth, C. H.; Christianson, A. D.; Riseborough, P. S.

    2014-06-25

    We report inelastic neutron scattering experiments on a single crystal of the intermediate valence compound CePd3. At 300 K the magnetic scattering is quasielastic, with half-width G = 23 meV, and is independent of momentum transfer Q. At low temperature, the Q-averaged magnetic spectrum is inelastic, exhibiting a broad peak centered near E-max = 55 meV. These results, together with the temperature dependence of the susceptibility, 4f occupation number, and specific heat, can be fit by the Kondo/Anderson impurity model. The low temperature scattering near Emax, however, shows significant variations with Q, reflecting the coherence of the 4f lattice. The intensity is maximal at (1/2, 1/2, 0), intermediate at (1/2, 0, 0) and (0, 0, 0), and weak at (1/2, 1/2, 1/2). We discuss this Q-dependence in terms of current ideas about coherence in heavy fermion systems.

  2. WiFi Epidemiology: Can Your Neighbors' Router Make Yours Sick?

    E-Print Network [OSTI]

    Hu, Hao; Colizza, Vittoria; Vespignani, Alessandro

    2007-01-01

    In densely populated urban areas WiFi routers form a tightly interconnected proximity network that can be exploited as a substrate for the spreading of malware able to launch massive fraudulent attack and affect entire urban areas WiFi networks. In this paper we consider several scenarios for the deployment of malware that spreads solely over the wireless channel of major urban areas in the US. We develop an epidemiological model that takes into consideration prevalent security flaws on these routers. The spread of such a contagion is simulated on real-world data for geo-referenced wireless routers. We uncover a major weakness of WiFi networks in that most of the simulated scenarios show tens of thousands of routers infected in as little time as two weeks, with the majority of the infections occurring in the first 24 to 48 hours. We indicate possible containment and prevention measure to limit the eventual harm of such an attack.

  3. Methanol conversion to light olefins over nanostructured CeAPSO-34 catalyst: Thermodynamic analysis of overall reactions and effect of template type on catalytic properties and performance

    SciTech Connect (OSTI)

    Aghamohammadi, Sogand; Haghighi, Mohammad; Charghand, Mojtaba

    2014-02-01

    Graphical abstract: In this research nanostructured CeAPSO-34 was synthesized to explore the effect of TEAOH and morpholine on its physiochemical properties and MTO performance. Prepared catalysts were characterized with XRD, FESEM, BET, FTIR and NH3-TPD techniques. The results indicated that the nature of the template determines the physiochemical properties of CeAPSO-34 due to different rate of crystal growth. The catalyst obtained by using morpholine showed longer life time as well as sustaining light olefins selectivity at higher values. Furthermore, a comprehensive thermodynamic analysis of overall reactions network was carried out to address the major channels of methanol to olefins conversion. - Highlights: • Introduction of Ce into SAPO-34 framework. • Comparison of CeAPSO-34 synthesized using morpholine and TEAOH. • The nature of the template determines the physiochemical properties of CeAPSO-34. • Morpholine enhances catalyst lifetime in MTO process. • Presenting a complete reaction network for MTO process. - Abstract: TEAOH and morpholine were employed in synthesis of nanostructured CeAPSO-34 molecular sieve and used in methanol to olefins conversion. Prepared samples were characterized by XRD, FESEM, EDX, BET, FTIR and NH{sub 3}-TPD techniques. XRD patterns reflected the higher crystallinity of the catalyst synthesized with morpholine. The FESEM results indicated that the nature of the template determines the morphology of nanostructured CeAPSO-34 due to different rate of crystal growth. There was a meaningful difference in the strength of both strong and weak acid sites for CeAPSO-34 catalysts synthesized with TEAOH and morpholine templates. The catalyst synthesized with morpholine showed higher desorption temperature of both weak and strong acid sites evidenced by NH{sub 3}-TPD characterization. The catalyst obtained using morpholine template had the longer lifetime and sustained desired light olefins at higher values. A comprehensive thermodynamic analysis of overall reactions network was carried out to address the major channels of methanol to olefins conversion.

  4. Superconducting epitaxial thin films of CeNi{sub x}Bi{sub 2} with a bismuth square net structure

    SciTech Connect (OSTI)

    Buckow, Alexander; Kupka, Katharina; Retzlaff, Reiner; Kurian, Jose; Alff, Lambert [Institute of Materials Science, Technische Universitaet Darmstadt, 64287 Darmstadt (Germany)

    2012-10-15

    We have grown highly epitaxial and phase pure thin films of the arsenic-free pnictide compound CeNi{sub x}Bi{sub 2} on (100) MgO substrates by reactive molecular beam epitaxy (RMBE). X-ray diffraction and reflection high-energy electron diffraction of the films confirm the ZrCuSiAs structure with a Bi square net layer. Superconductivity was observed in magnetization and resistivity measurements for x= 0.75 to 0.93 in these CeNi{sub x}Bi{sub 2} thin films with the highest critical temperature of 4.05 K and a resistive transition width of 0.1 K for x= 0.86. Our results indicate that thin film deposition by RMBE provides a tool to synthesize high-quality pnictide superconductors of the novel 112 type.

  5. Synthesis and properties of Sr2CeO4 blue emission powder phosphor for field emission displays

    E-Print Network [OSTI]

    Wang, Zhong L.

    oxalate NH4 2C2O4·H2O, Fisher, 99 % were used as raw materials. First, dissolving Sr NO3 2 and Ce NO3 3·6H Institute of Technology, Atlanta, Georgia 30332 Zhong Lin Wang School of Materials Science and Engineering phosphor, because wide band gap materials are required and the eye sensitivity is quite low in the blue

  6. UNITED STATES DEPARTMENT OF THE INTERIOR FISH AND WILDLIFE SERVICE

    E-Print Network [OSTI]

    r op:- p redatoT' fi sh- forage fish bal ance in farm ponds , to production of fish in hatchery engineering data collected du ring t he construction of a pond. It is r eco; J (> e 1 tlm. t actua, usually produ ce d On short spikes, are dispe r sed ra pidl y by water currents, by the wind

  7. Superior performance of Ni-W-Ce mixed-metal oxide catalysts for ethanol steam reforming: Synergistic effects of W- and Ni-dopants

    SciTech Connect (OSTI)

    Rodriguez, Jose A.; Liu, Zongyuan; Xu, Wenqian; Yao, Siyu; Johnson-Peck, Aaron C.; Zhao, Fuzhen; Michorczyk, Piotr; Kubacka, Anna; Stach, Eric A.; Fernandez-Garica, Marcos; Senanayake, Sanjaya D.

    2014-11-26

    The ethanol steam reforming (ESR) reaction was studied over a series of Ni-W-Ce oxide catalysts. The structures of the catalysts were characterized using in-situ techniques including X-ray diffraction, Pair Distribution Function, X-ray absorption fine structure and transmission electron microscopy; while possible surface intermediates for the ESR reaction were investigated by Diffuse Reflectance Infrared Fourier Transform Spectroscopy. In these materials, all the W and part of the Ni were incorporated into the CeO? lattice, with the remaining Ni forming highly dispersed nano NiO (< 2 nm) outside the Ni-W-Ce oxide structure. The nano NiO was reduced to Ni under ESR conditions. The Ni-W-Ce systeme exhibited a much larger lattice strain than those seen for Ni-Ce and W-Ce. Synergistic effects between Ni and W inside ceria produced a substantial amount of defects and O vacancies that led to high catalytic activity, selectivity and stability (i.e. resistance to coke formation) during ethanol steam reforming.

  8. Superior performance of Ni-W-Ce mixed-metal oxide catalysts for ethanol steam reforming: Synergistic effects of W- and Ni-dopants

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

    Rodriguez, Jose A. [Brookhaven National Lab. (BNL), Upton, NY (United States); State Univ. of New York Stony Brook, Stony Brook, NY (United States); Liu, Zongyuan [Brookhaven National Lab. (BNL), Upton, NY (United States); State Univ. of New York Stony Brook, Stony Brook, NY (United States); Xu, Wenqian [Brookhaven National Lab. (BNL), Upton, NY (United States); Yao, Siyu [Brookhaven National Lab. (BNL), Upton, NY (United States); Johnson-Peck, Aaron C. [Brookhaven National Lab. (BNL), Upton, NY (United States); Zhao, Fuzhen [Brookhaven National Lab. (BNL), Upton, NY (United States); Michorczyk, Piotr [Inst. de Catalisis y Petroleoquimica, Madrid (Spain); Kubacka, Anna [Inst. de Catalisis y Petroleoquimica, Madrid (Spain); Stach, Eric A. [Brookhaven National Lab. (BNL), Upton, NY (United States); Fernandez-Garica, Marcos [State Univ. of New York Stony Brook, Stony Brook, NY (United States); Senanayake, Sanjaya D. [Brookhaven National Lab. (BNL), Upton, NY (United States)

    2015-01-01

    The ethanol steam reforming (ESR) reaction was studied over a series of Ni-W-Ce oxide catalysts. The structures of the catalysts were characterized using in-situ techniques including X-ray diffraction, Pair Distribution Function, X-ray absorption fine structure and transmission electron microscopy; while possible surface intermediates for the ESR reaction were investigated by Diffuse Reflectance Infrared Fourier Transform Spectroscopy. In these materials, all the W and part of the Ni were incorporated into the CeO? lattice, with the remaining Ni forming highly dispersed nano NiO (< 2 nm) outside the Ni-W-Ce oxide structure. The nano NiO was reduced to Ni under ESR conditions. The Ni-W-Ce systeme exhibited a much larger lattice strain than those seen for Ni-Ce and W-Ce. Synergistic effects between Ni and W inside ceria produced a substantial amount of defects and O vacancies that led to high catalytic activity, selectivity and stability (i.e. resistance to coke formation) during ethanol steam reforming.

  9. SESAME 96170, a solid-liquid equation of state for CeO2

    SciTech Connect (OSTI)

    Chisolm, Eric D.

    2014-05-02

    I describe an equation of state (EOS) for the low-pressure solid phase and liquid phase of cerium (IV) oxide, CeO2. The models and parameters used to calculate the EOS are presented in detail, and I compare with data for the full-density crystal. Hugoniot data are available only for high-porosity powders, and I discuss difficulties in comparing with such data. I have constructed SESAME 96170, an EOS for cerium (IV) oxide that includes the ambient solid and liquid phases. The EOS extends over the full standard SESAME range, but should not be used at low temperatures and high densities because of the lack of a high-pressure solid phase. I have described the models used to compute the three terms of the EOS (cold curve, nuclear, and thermal electronic), and I have given the parameters used in the models. They were determined by comparison with experimental data at P = 1 atm, including the constant-pressure specific heat, coefficient of thermal expansion, and melting and boiling points. The EOS compares well with data in its intended range of validity, but the presence of high-frequency optical modes in its phonon spectrum limits the agreement of our models with thermal data. The next step is to construct a multiphase EOS that includes the low- and high-pressure solid phases and the liquid. The DAC data from Duclos will most strongly constrain the parameters of the high-pressure solid. A remaining issue is the comparison of the crystal-density EOS with experimental Hugoniot data, which are taken at much lower initial data because the samples are porous powders. A satisfactory means of modeling porosity, allowing comparison of theory and experiment, has not yet been produced.

  10. Dr. T.P. Clement CE 3010 class notes

    E-Print Network [OSTI]

    Clement, Prabhakar

    8/15/2011 1 Dr. T.P. Clement CE 3010 class notes Learning Objectives · Motivation · Basic approach value of the definite integral 2 b a dxxf )( Dr. T.P. Clement CE 3010 class notes Analytical (or exact a dxxf )( Dr. T.P. Clement CE 3010 class notes Trapezoidal Rule F(x) #12;8/15/2011 2 Dr. T.P. Clement CE

  11. GIS IN WATER RESOURCES CE 413/513, 3 credits

    E-Print Network [OSTI]

    Wright, Dawn Jeannine

    GIS IN WATER RESOURCES CE 413/513, 3 credits Prerequisites: Senior or graduate in Engineering or one previous GIS course CE 413 Instructor: Tracy Arras CE 513 Instructor: Wayne Huber Office: Owen 238 Learning Objectives · Demonstrate the basic concepts and operation of GIS for water resources Data models

  12. Euclid's proposition III.35 says that if AB and CD are chords of a circle intersecting in a point E, then AE EB = CE ED.

    E-Print Network [OSTI]

    be the diameter passing through E. Then, a special case of the proposition is to show that AE · EB = FE · EG. In fact, it is enough to show this special case, because if AE · EB = FE · EG and if CE · ED = FE · EG, then by transitivity, AE · EB = CE · ED. Hence, we will proceed to prove that AE · EB = FE · EG. Let r be the radius

  13. Crystalline Electric Field as a Probe for Long-Range Antiferromagnetic Order and Superconducting State of CeFeAsO1-xFx

    SciTech Connect (OSTI)

    Chi, Songxue; Adroja, D. T.; GUIDI, T.; Bewley, Robert I.; Li, Shiliang; Zhao, Jun; Lynn, J. W.; Brown, C. M.; Qiu, Y.; Chen, G. F,; Luo, J. L.; Wang, N. L.; Dai, Pengcheng

    2008-01-01

    We use inelastic neutron scattering to study the crystalline electric field (CEF) excitations of Ce{sup 3+} in CeFeAsO{sub 1-x}F{sub x} (x=0, 0.16). For nonsuperconducting CeFeAsO, the Ce CEF levels have three magnetic doublets in the paramagnetic state, but these doublets split into six singlets when the Fe ions order antiferromagnetically. For superconducting CeFeAsO{sub 0.84}F{sub 0.16} (T{sub c} = 41 K), where the static antiferromagnetic order is suppressed, the Ce CEF levels have three magnetic doublets at {h_bar}{sub {omega}} = 0, 18.7, 58.4 meV at all temperatures. Careful measurements of the intrinsic linewidth {Lambda} and the peak position of the 18.7 meV mode reveal a clear anomaly at T{sub c}, consistent with a strong enhancement of local magnetic susceptibility {chi}{double_prime}({h_bar}{sub {omega}}) below T{sub c}. These results suggest that CEF excitations in the rare-earth oxypnictides can be used as a probe of spin dynamics in the nearby FeAs planes.

  14. Hierarchical heterogeneity at the CeOx-TiO? interface: Electronic and geometric structural influence on the photocatalytic activity of oxide on oxide nanostructures

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

    Luo, Si [Brookhaven National Lab. (BNL), Upton, NY (United States); Nguyen-Phan, Thuy-Duong [Brookhaven National Lab. (BNL), Upton, NY (United States); Johnston-Peck, Aaron C. [Brookhaven National Lab. (BNL), Upton, NY (United States); Barrio, Laura [CSIC - Inst. de Catalisis y Petroleoquimica, Madrid (Spain); Sallis, Shawn [Binghamton Univ., NY (United States); Arena, Dario A. [Brookhaven National Lab. (BNL), Upton, NY (United States); Kundu, Shankhamala [Brookhaven National Lab. (BNL), Upton, NY (United States); Xu, Wenqian [Brookhaven National Lab. (BNL), Upton, NY (United States); Piper, Louis F. J. [Binghamton Univ., NY (United States); Stach, Eric A. [Brookhaven National Lab. (BNL), Upton, NY (United States); Polyansky, Dmitry E. [Brookhaven National Lab. (BNL), Upton, NY (United States); Fujita, Etsuko [Brookhaven National Lab. (BNL), Upton, NY (United States); Rodriguez, José A. [Brookhaven National Lab. (BNL), Upton, NY (United States); CSIC - Inst. de Catalisis y Petroleoquimica, Madrid (Spain); Senanayake, Sanjaya D. [Brookhaven National Lab. (BNL), Upton, NY (United States)

    2015-01-27

    Mixed oxide interfaces are critical for delivering active components of demanding catalytic processes such as the photo-catalytic splitting of water. We have studied CeOxTiO? catalysts with low ceria loadings of 1 wt%, 3 wt% and 6 wt% that were prepared with wet impregnation methods to favor a strong interaction between CeOx and TiO?. In these materials the interfaces between CeOx-TiO? have been sequentially loaded (1%, 3% and 6%), with and without Pt (0.5 wt%). The structure and properties of the catalysts were characterized using several X-ray and electron based techniques including XRD, XPS, UPS, NEXAFS, UV-Vis and HR-STEM/STEM-EELS, to unravel the local morphology, bulk structure, surface states and electronic structure. The combination of all these techniques allow us to analyze in a systematic way the complete structural and electronic properties that prevail at the CeOx-TiO? interface. Fluorite structured nano crystallites of ceria on anatase-structured titania were identified by both XRD and NEXAFS. A sequential increasing of the CeOx loading led to the formation of clusters, then plates and finally nano particles in a hierarchical manner on the TiO? support. The electronic structures of these catalysts indicate that the interaction between TiO? and CeO? is closely related to the local morphology of nanostructured CeO?. Ce³? cations were detected at the surface of CeO? and at the interface of the two oxides. In addition, the titania is perturbed by the interaction with ceria and also with Pt. The photocatalytic activity for the splitting of H?O using UV light was measured for these materials and correlated with our understanding of the electronic and structural properties. Optimal catalytic performance and photo response results were found for the 1 wt% CeOx-TiO? catalyst where low dimensional geometry of the ceria provided ideal electronic and geometrical properties. The structural and electronic properties of the interface were critical for the photocatalytic performance of this mixed-oxide nanocatalyst system.

  15. Hierarchical Heterogeneity at the CeO x –TiO 2 Interface: Electronic and Geometric Structural Influence on the Photocatalytic Activity of Oxide on Oxide Nanostructures

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

    Luo, Si; Nguyen-Phan, Thuy-Duong; Johnston-Peck, Aaron C.; Barrio, Laura; Sallis, Shawn; Arena, Dario A.; Kundu, Shankhamala; Xu, Wenqian; Piper, Louis F. J.; Stach, Eric A.; et al

    2015-01-13

    Mixed oxide interfaces are critical for delivering active components of demanding catalytic processes such as the photo-catalytic splitting of water. We have studied CeOxTiO? catalysts with low ceria loadings of 1 wt%, 3 wt% and 6 wt% that were prepared with wet impregnation methods to favor a strong interaction between CeOx and TiO?. In these materials the interfaces between CeOx-TiO? have been sequentially loaded (1%, 3% and 6%), with and without Pt (0.5 wt%). The structure and properties of the catalysts were characterized using several X-ray and electron based techniques including XRD, XPS, UPS, NEXAFS, UV-Vis and HR-STEM/STEM-EELS, to unravelmore »the local morphology, bulk structure, surface states and electronic structure. The combination of all these techniques allow us to analyze in a systematic way the complete structural and electronic properties that prevail at the CeOx-TiO? interface. Fluorite structured nano crystallites of ceria on anatase-structured titania were identified by both XRD and NEXAFS. A sequential increasing of the CeOx loading led to the formation of clusters, then plates and finally nano particles in a hierarchical manner on the TiO? support. The electronic structures of these catalysts indicate that the interaction between TiO? and CeO? is closely related to the local morphology of nanostructured CeO?. Ce³? cations were detected at the surface of CeO? and at the interface of the two oxides. In addition, the titania is perturbed by the interaction with ceria and also with Pt. The photocatalytic activity for the splitting of H?O using UV light was measured for these materials and correlated with our understanding of the electronic and structural properties. Optimal catalytic performance and photo response results were found for the 1 wt% CeOx-TiO? catalyst where low dimensional geometry of the ceria provided ideal electronic and geometrical properties. The structural and electronic properties of the interface were critical for the photocatalytic performance of this mixed-oxide nanocatalyst system.« less

  16. Hierarchical heterogeneity at the CeOx-TiO? interface: Electronic and geometric structural influence on the photocatalytic activity of oxide on oxide nanostructures

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

    None

    2015-01-13

    Mixed oxide interfaces are critical for delivering active components of demanding catalytic processes such as the photo-catalytic splitting of water. We have studied CeOxTiO? catalysts with low ceria loadings of 1 wt%, 3 wt% and 6 wt% that were prepared with wet impregnation methods to favor a strong interaction between CeOx and TiO?. In these materials the interfaces between CeOx-TiO? have been sequentially loaded (1%, 3% and 6%), with and without Pt (0.5 wt%). The structure and properties of the catalysts were characterized using several X-ray and electron based techniques including XRD, XPS, UPS, NEXAFS, UV-Vis and HR-STEM/STEM-EELS, to unravelmore »the local morphology, bulk structure, surface states and electronic structure. The combination of all these techniques allow us to analyze in a systematic way the complete structural and electronic properties that prevail at the CeOx-TiO? interface. Fluorite structured nano crystallites of ceria on anatase-structured titania were identified by both XRD and NEXAFS. A sequential increasing of the CeOx loading led to the formation of clusters, then plates and finally nano particles in a hierarchical manner on the TiO? support. The electronic structures of these catalysts indicate that the interaction between TiO? and CeO? is closely related to the local morphology of nanostructured CeO?. Ce³? cations were detected at the surface of CeO? and at the interface of the two oxides. In addition, the titania is perturbed by the interaction with ceria and also with Pt. The photocatalytic activity for the splitting of H?O using UV light was measured for these materials and correlated with our understanding of the electronic and structural properties. Optimal catalytic performance and photo response results were found for the 1 wt% CeOx-TiO? catalyst where low dimensional geometry of the ceria provided ideal electronic and geometrical properties. The structural and electronic properties of the interface were critical for the photocatalytic performance of this mixed-oxide nanocatalyst system.« less

  17. Hot Bottom Burning Nucleosynthesis in 6 M fi Stellar Models J. C. Lattanzio and C. A. Frost a , R. C. Cannon b , and P. R. Wood c .

    E-Print Network [OSTI]

    Lattanzio, John

    1 Hot Bottom Burning Nucleosynthesis in 6 M fi Stellar Models J. C. Lattanzio and C. A. Frost a , R, Australia We present a brief summary of some nucleosynthesis calculations for 6 M fi stellar models. Theoretical studies are desperately needed to quantify the nucleosynthesis which occurs in intermediate mass

  18. Structural and magnetic properties in the polymorphs of CeRh{sub 0.5}Ge{sub 1.5}

    SciTech Connect (OSTI)

    Kalsi, Deepti; Subbarao, Udumula [New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore-560064 (India); Rayaprol, Sudhindra [UGC-DAE Consortium for Scientific Research, R-5 Shed, B.A.R.C Campus, Trombay, Mumbai-400085 (India); Peter, Sebastian C., E-mail: sebastiancp@jncasr.ac.in [New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore-560064 (India)

    2014-04-01

    We investigate the structural and magnetic properties in the polymorphs of a new compound CeRh{sub 0.5}Ge{sub 1.5}. Depending upon the starting materials, and the slightly different synthesis method, we find that CeRh{sub 0.5}Ge{sub 1.5} compound exists in two different space groups. The first compound, ?-CeRh{sub 0.5}Ge{sub 1.5} crystallizes in tetragonal ?-ThSi{sub 2} structure type in space group I4{sub 1}/amd with lattice parameters, a=4.2034(6) Å and c=14.770(3) Å. In this structure, the cerium atoms occupy the position between the Rh/Ge tetrahedral layers. On the other hand, the second compound, namely ?-CeRh{sub 0.5}Ge{sub 1.5} crystallizes in the AlB{sub 2} type hexagonal structure in space group P6/mmm, with lattice parameters, a=4.2615(7) Å and c=4.1813(9) Å. The crystal structure of ?-CeRh{sub 0.5}Ge{sub 1.5} consists of two dimensional Rh/Ge hexagonal units and the cerium atoms are sandwiched between them. Magnetization studies exhibit magnetic ordering, as evident from a sharp peak in the plot of magnetic susceptibility measured as a function of temperature in a fixed magnetic field, in ?-CeRh{sub 0.5}Ge{sub 1.5} and ?-CeRh{sub 0.5}Ge{sub 1.5} at 3.6 K and 12 K, respectively. Structural and magnetic properties of both compounds are presented and discussed here. - Graphical abstract: Two polymorphs of a new compound CeRh{sub 0.5}Ge{sub 1.5} in the ?-ThSi{sub 2} and AlB{sub 2} structure types were synthesized by arc melting. The magnetic measurements of both CeRh{sub 0.5}Ge{sub 1.5} phases suggest spin-glass behavior. - Highlights: • A new compound CeRh{sub 0.5}Ge{sub 1.5} in two difference phases was synthesized by arc melting. • The crystal structure of both compounds was determined from the single crystal XRD. • Isothermal relaxation measurements suggesting spin-glass like anomalies in both phases.

  19. PowerGuide: Accurate Wi-Fi Power Estimator for Smartphones

    E-Print Network [OSTI]

    Boutaba, Raouf

    years. Wi- Fi energy consumption is a significant portion of smartphone energy usage [1]. Therefore][3] provide the solution for profiling the energy usages per smartphone application, but only restricted School of Computer Science, University of Waterloo, Canada email: rboutaba@cs.uwaterloo.ca §Higher School

  20. BreezChirp: Energy Efficient Wi-Fi Bandwidth Estimator for Smartphones

    E-Print Network [OSTI]

    Boutaba, Raouf

    Center) support program supervised by the NIPA(National IT Industry Promotion Agency) (NIPA-2013-H0301BreezChirp: Energy Efficient Wi-Fi Bandwidth Estimator for Smartphones Jian Li, Jin Xiao, Huu Nhat Science, University of Waterloo, Canada email: rboutaba@cs.uwaterloo.ca Faculty of Computer Science

  1. Palmetto Clean Energy (PaCE) Program

    Broader source: Energy.gov [DOE]

    PaCE funding comes from the customers of participating utilities who voluntarily choose to support the program through an additional charge on their monthly utility bills. Of the $4, $3.50 goes t...

  2. Energy Aware Scheduling and Queue Management for Next Generation Wi-Fi Routers

    E-Print Network [OSTI]

    Atiquzzaman, Mohammed

    wireless routers by considering performance metrics such as throughput and energy usage of multi-band Wi and their energy usages must be taken into account not to waste power. However, the current MWRs neither considerEnergy Aware Scheduling and Queue Management for Next Generation Wi-Fi Routers Husnu S. Narman

  3. Wireless LANs: outline wireless 802.11 and WiFi.

    E-Print Network [OSTI]

    Biagioni, Edoardo S.

    Wireless LANs: outline wireless 802.11 and WiFi. 802.11 security: WEP, 802.11i, WPA, WPA2. networking security wireless ad-hoc and mesh networks #12;ISM bands to operate most radios, a license availability of the 2.4GHz ISM band, many applications have been developed for it #12;Wireless 802.11/Wi

  4. Fabrication and microstructure of cerium doped lutetium aluminum garnet (Ce:LuAG) transparent ceramics by solid-state reaction method

    SciTech Connect (OSTI)

    Li, Junlang; Xu, Jian; Shi, Ying; Qi, Hongfang; Xie, Jianjun; Lei, Fang

    2014-07-01

    Highlights: • We fabricate Ce doped lutetium aluminum garnet ceramics by solid-state method. • The raw materials include Lu{sub 2}O{sub 3} nanopowders synthesized by co-precipitation method. • The density of the transparent ceramics reach 99.7% of the theoretical value. • The optical transmittance of the bulk ceramic at 550 nm was 57.48%. • Some scattering centers decrease the optical characteristic of the ceramic. - Abstract: Polycrystalline Ce{sup 3+} doped lutetium aluminum garnet (Ce:LuAG) transparent ceramics fabricated by one step solid-state reaction method using synthetic nano-sized Lu{sub 2}O{sub 3}, commercial ?-Al{sub 2}O{sub 3} and CeO{sub 2} powders were investigated in this paper. The green compacts shaped by the mixed powders were successfully densified into Ce:LuAG transparent ceramics after vacuum sintering at 1750 °C for 10 h. The in-line optical transmittance of the Ce:LuAG ceramic made by home-made Lu{sub 2}O{sub 3} powders could reach 57.48% at 550 nm, which was higher than that of the ceramic made by commercial Lu{sub 2}O{sub 3} powders (22.96%). The microstructure observation showed that light scattering centers caused by micro-pores, aluminum segregation and refraction index inhomogeneities induced the decrease of optical transparency of the Ce:LuAG ceramics, which should be removed and optimized in the future work.

  5. Superior performance of Ni–W–Ce mixed-metal oxide catalysts for ethanol steam reforming: Synergistic effects of W- and Ni-dopants

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

    Liu, Zongyuan; Xu, Wenqian; Yao, Siyu; Johnson-Peck, Aaron C.; Zhao, Fuzhen; Michorczyk, Piotr; Kubacka, Anna; Stach, Eric A.; Fernández-García, Marcos; Senanayake, Sanjaya D.; et al

    2014-11-26

    In this study, the ethanol steam reforming (ESR) reaction was examined over a series of Ni-W-Ce oxide catalysts. The structures of the catalysts were characterized using in-situ techniques including X-ray diffraction, Pair Distribution Function, X-ray absorption fine structure and transmission electron microscopy; while possible surface intermediates for the ESR reaction were investigated by Diffuse Reflectance Infrared Fourier Transform Spectroscopy. In these materials, all the W and part of the Ni were incorporated into the CeO? lattice, with the remaining Ni forming highly dispersed nano NiO (more »under ESR conditions. The Ni-W-Ce systeme exhibited a much larger lattice strain than those seen for Ni-Ce and W-Ce. Synergistic effects between Ni and W inside ceria produced a substantial amount of defects and O vacancies that led to high catalytic activity, selectivity and stability (i.e. resistance to coke formation) during ethanol steam reforming.« less

  6. Rapid Microwave Preparation of Highly Efficient Ce[superscript 3+]-Substituted Garnet Phosphors for Solid State White Lighting

    SciTech Connect (OSTI)

    Birkel, Alexander; Denault, Kristin A.; George, Nathan C.; Doll, Courtney E.; Héry, Bathylle; Mikhailovsky, Alexander A.; Birkel, Christina S.; Hong, Byung-Chul; Seshadri, Ram (UCSB); (Mitsubishi)

    2012-04-30

    Ce{sup 3+}-substituted aluminum garnet compounds of yttrium (Y{sub 3}Al{sub 5}O{sub 12}) and lutetium (Lu{sub 3}Al{sub 5}O{sub 12}) - both important compounds in the generation of (In,Ga)N-based solid state white lighting - have been prepared using a simple microwave heating technique involving the use of a microwave susceptor to provide the initial heat source. Carbon used as the susceptor additionally creates a reducing atmosphere around the sample that helps stabilize the desired luminescent compound. High quality, phase-pure materials are prepared within a fraction of the time and using a fraction of the energy required in a conventional ceramic preparation; the microwave technique allows for a reduction of about 95% in preparation time, making it possible to obtain phase pure, Ce{sup 3+}-substituted garnet compounds in under 20 min of reaction time. It is estimated that the overall reduction in energy compared with ceramic routes as practiced in the lab is close to 99%. Conventionally prepared material is compared with material prepared using microwave heating in terms of structure, morphology, and optical properties, including quantum yield and thermal quenching of luminescence. Finally, the microwave-prepared compounds have been incorporated into light-emitting diode 'caps' to test their performance characteristics in a real device, in terms of their photon efficiency and color coordinates.

  7. Generation and reactivity of putative support systems, Ce-Al neutral binary oxide nanoclusters: CO oxidation and C–H bond activation

    SciTech Connect (OSTI)

    Wang, Zhe-Chen; Yin, Shi; Bernstein, Elliot R.

    2013-11-21

    Both ceria (CeO{sub 2}) and alumina (Al{sub 2}O{sub 3}) are very important catalyst support materials. Neutral binary oxide nanoclusters (NBONCs), Ce{sub x}Al{sub y}O{sub z}, are generated and detected in the gas phase and their reactivity with carbon monoxide (CO) and butane (C{sub 4}H{sub 10}) is studied. The very active species CeAlO{sub 4}{sup •} can react with CO and butane via O atom transfer (OAT) and H atom transfer (HAT), respectively. Other Ce{sub x}Al{sub y}O{sub z} NBONCs do not show reactivities toward CO and C{sub 4}H{sub 10}. The structures, as well as the reactivities, of Ce{sub x}Al{sub y}O{sub z} NBONCs are studied theoretically employing density functional theory (DFT) calculations. The ground state CeAlO{sub 4}{sup •} NBONC possesses a kite-shaped structure with an O{sub t}CeO{sub b}O{sub b}AlO{sub t} configuration (O{sub t}, terminal oxygen; O{sub b}, bridging oxygen). An unpaired electron is localized on the O{sub t} atom of the AlO{sub t} moiety rather than the CeO{sub t} moiety: this O{sub t} centered radical moiety plays a very important role for the reactivity of the CeAlO{sub 4}{sup •} NBONC. The reactivities of Ce{sub 2}O{sub 4}, CeAlO{sub 4}{sup •}, and Al{sub 2}O{sub 4} toward CO are compared, emphasizing the importance of a spin-localized terminal oxygen for these reactions. Intramolecular charge distributions do not appear to play a role in the reactivities of these neutral clusters, but could be important for charged isoelectronic BONCs. DFT studies show that the reaction of CeAlO{sub 4}{sup •} with C{sub 4}H{sub 10} to form the CeAlO{sub 4}H•C{sub 4}H{sub 9}{sup •} encounter complex is barrierless. While HAT processes have been previously characterized for cationic and anionic oxide clusters, the reported study is the first observation of a HAT process supported by a ground state neutral oxide cluster. Mechanisms for catalytic oxidation of CO over surfaces of Al{sub x}O{sub y}/M{sub m}O{sub n} or M{sub m}O{sub n}/Al{sub x}O{sub y} materials are proposed consistent with the presented experimental and theoretical results.

  8. Electronic and optical properties of layered RE{sub 2}Ti{sub 2}O{sub 7} (RE = Ce and Pr) from first principles

    SciTech Connect (OSTI)

    Sayede, A.; Khenata, R.; Chahed, A.; Benhelal, O.

    2013-05-07

    We have studied the structural and electronic properties of Ce{sub 2}Ti{sub 2}O{sub 7} (CeTO) and Pr{sub 2}Ti{sub 2}O{sub 7} (PrTO) by first-principles density functional theory calculations. The computed structural parameters are in fairly good agreement with the available experimental findings. Band structure calculations using the GGA+U approach predict an insulating ground state for the herein studied compounds. The insulating band gaps of 2.00 eV and 2.83 eV are found for CeTO and PrTO, respectively. The analysis of the density of states reveals that the strongly localized RE 4f levels act as charge-trapping sites, predicting a lower photocatalytic activity for CeTO. We have also calculated the optical properties for both CeTO and PrTO. Based on these properties, it is predicted that these titanates are insensitive to ultra-violet radiation, while they are more sensitive to frequencies of the radiation in visible and early UV regions.

  9. A Prototype of LaBr3:Ce in situ Gamma-Ray Spectrometer for Marine Environmental Monitoring

    E-Print Network [OSTI]

    Zeng, Zhi; Pan, Xingyu; Xue, Tao; Ma, Hao; Yi, Hongchang; Cheng, Jianping

    2015-01-01

    A prototype of LaBr3:Ce in situ gamma-ray spectrometer for marine environmental monitoring is developed and applied for in situ measurement. A 3-inch LaBr3:Ce scintillator is used in the detector, and a digital pulse process electronics is chosen as the pulse height analyzer. For this prototype, the energy response of the spectrometer is linear and the energy resolution of 662keV is 2.6% (much better than NaI). With the measurement of the prototype in a water tank filled with 137Cs, the detect efficiency for 137Cs is (0.288 0.01)cps/(Bq/L), which is close to the result of Monte Carlo simulation, 0.283cps/(Bq/L). With this measurement, the MDAC for 137Cs in one hour has been calculated to 0.78Bq/L, better than that of NaI(Tl) in-situ gamma spectrometer, which is ~1.0Bq/L.

  10. A Prototype of LaBr3:Ce in situ Gamma-Ray Spectrometer for Marine Environmental Monitoring

    E-Print Network [OSTI]

    Ming Zeng; Zhi Zeng; Jirong Cang; Xingyu Pan; Tao Xue; Hao Ma; Hongchang Yi; Jianping Cheng

    2015-04-20

    A prototype of LaBr3:Ce in situ gamma-ray spectrometer for marine environmental monitoring is developed and applied for in situ measurement. A 3-inch LaBr3:Ce scintillator is used in the detector, and a digital pulse process electronics is chosen as the pulse height analyzer. For this prototype, the energy response of the spectrometer is linear and the energy resolution of 662keV is 2.6% (much better than NaI). With the measurement of the prototype in a water tank filled with 137Cs, the detect efficiency for 137Cs is (0.288 0.01)cps/(Bq/L), which is close to the result of Monte Carlo simulation, 0.283cps/(Bq/L). With this measurement, the MDAC for 137Cs in one hour has been calculated to 0.78Bq/L, better than that of NaI(Tl) in-situ gamma spectrometer, which is ~1.0Bq/L.

  11. Chemical Reduction of Nd1.85Ce0.15CuO4??Powders in Supercritical Sodium Ammonia Solutions

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

    Dias, Yasmin; Wang, Hui; Zhou, Haiqing; Lin, Feng; Lan, Yucheng

    2015-01-01

    Nd1.85Ce0.15CuO4??powders are chemically reduced in supercritical sodium ammonia solutions from room temperature to 350°C. The crystallographic structure of the reduced powders is investigated from Rietveld refinement of X-ray powder diffraction. The atomic positions are maintained constant within experimental errors while temperature factors of all atoms increase significantly after the chemical treatments, especially of Nd/Ce atoms. The ammonothermally reduced Nd1.85Ce0.15CuO4??powders show diamagnetic below 24?K which is contributed to the lower oxygen content and higher temperature factors of atoms in the treated compound. The ammonothermal method paves a new way to reduce oxides in supercritical solutions near room temperature.

  12. Chemical Reduction of Nd 1.85 Ce 0.15 CuO 4? ? Powders in Supercritical Sodium Ammonia Solutions

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

    Dias, Yasmin; Wang, Hui; Zhou, Haiqing; Lin, Feng; Lan, Yucheng

    2015-01-01

    Nd 1.85 Ce 0.15 CuO 4? ? powders are chemically reduced in supercritical sodium ammonia solutions from room temperature to 350°C. The crystallographic structure of the reduced powders is investigated from Rietveld refinement of X-ray powder diffraction. The atomic positions are maintained constant within experimental errors while temperature factors of all atoms increase significantly after the chemical treatments, especially of Nd/Ce atoms. The ammonothermally reduced Nd 1.85 Ce 0.15 CuO 4? ? powders show diamagnetic below 24?K which is contributed to the lower oxygen content and higher temperature factors of atoms in the treated compound.more »The ammonothermal method paves a new way to reduce oxides in supercritical solutions near room temperature. « less

  13. 2007 IEEE Workshop on Applications of Signal Processing to Audio and Acoustics October 21-24, 2007, New Paltz, NY PROBABILISTIC MODEL BASED SIMILARITY MEASURES FOR AUDIO

    E-Print Network [OSTI]

    Virtanen, Tuomas

    and Marko Hel´en Tampere University of Technology tuomas.virtanen@tut.fi, marko.helen@tut.fi ABSTRACT

  14. Reactivity of pulverized coals during combustion catalyzed by CeO{sub 2} and Fe{sub 2}O{sub 3}

    SciTech Connect (OSTI)

    Gong, Xuzhong; Guo, Zhancheng; Wang, Zhi

    2010-02-15

    Effects of CeO{sub 2} and Fe{sub 2}O{sub 3} on combustion reactivity of several fuels, including three ranks of coals, graphite and anthracite chars, were investigated using thermo-gravimetric analyzer. The results indicated that the combustion reactivity of all the samples except lignite was improved with CeO{sub 2} or Fe{sub 2}O{sub 3} addition. It was interesting to note that the ignition temperatures of anthracite were decreased by 50 C and 53 C, respectively, with CeO{sub 2} and Fe{sub 2}O{sub 3} addition and that its combustion rates were increased to 15.4%/min and 12.2%/min. Ignition temperatures of lignite with CeO{sub 2} and Fe{sub 2}O{sub 3} addition were 250 C and 226 C, and the combustion rates were 12.8% and 19.3%/min, respectively. When compared with those of lignite without catalysts, no obvious catalytic effects of the two catalysts on its combustion reactivity were revealed. The results from the combustion of the three rank pulverized coals catalyzed by CeO{sub 2} and Fe{sub 2}O{sub 3} indicated significant effects of the two catalysts on fixed carbon combustion. And it was found that the higher the fuel rank, the better the catalytic effect. The results of combustion from two kinds of anthracite chars showed obvious effects of anthracite pyrolysis catalyzed by CeO{sub 2} and Fe{sub 2}O{sub 3} on its combustion reactivity. (author)

  15. Magnetic hardening of Ce1+xFe11–yCoyTi with ThMn12 structure by melt spinning

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

    Zhou, Chen; Sun, Kewei; Pinkerton, Frederick E.; Kramer, M. J.

    2015-04-15

    A recent study on the intrinsic magnetic properties of CeFe11–yCoyTi has revealed that substituting one Co for Fe retains the favorable magnetocrystalline anisotropy Ha found in the ternary Fe end member, while enhancing the Curie temperature Tc and saturation magnetization 4?Ms. These findings warrant further optimization around Co substitution y = 1 to try to exploit the hard magnetic properties of these Ce-based magnets. Both Ce and Co concentrations in Ce1+xFe11–yCoyTi have been optimized in the range of x = 0 – 0.2 and y = 0 –1.5. It was found that Co substitution effectively enhances all hard magnetic properties,more »although the values are still lower than those predicted from the intrinsic magnetic properties. Specifically, Tc increases from 210 °C to 285 – 350 °C; 4?M19 (magnetization at 19 kOe) from 8.9 kG to 10.5 – 11.5 kG, remanence Br from 3.1 kG to 4.1 – 4.5 kG, and most importantly, Hci from 1.1 kOe to 1.5 kOe. As a result, the room temperature energy product (BH)max has been increased by over 100% from 0.7 MGOe in Ce1.1Fe11Ti to 1.5 MGOe in Ce1.05Fe9.75Co1.25Ti. Microscopy analysis indicates that the addition of Co refines the grain size and promotes chemical homogeneity at the microscopic scale. As a result, the beneficial effect of Co on the microstructure contributes to the improved hard magnetic properties.« less

  16. High Catalytic Activity of Au/CeOx/TiO2(110) Controlled by the Nature of the Mixed Metal Oxide at the Nanometer Level

    SciTech Connect (OSTI)

    Park, J.; Graciani, J; Evans, J; Stacchiola, D; Ma, S; Liu, P; Nambu, A; Sanz, J; Hrbek, J; et. al.

    2009-01-01

    Mixed-metal oxides play a very important role in many areas of chemistry, physics, materials science, and geochemistry. Recently, there has been a strong interest in understanding phenomena associated with the deposition of oxide nanoparticles on the surface of a second (host) oxide. Here, scanning tunneling microscopy, photoemission, and density-functional calculations are used to study the behavior of ceria nanoparticles deposited on a TiO2(110) surface. The titania substrate imposes nontypical coordination modes on the ceria nanoparticles. In the CeOx/TiO2(110) systems, the Ce cations adopt an structural geometry and an oxidation state (+3) that are quite different from those seen in bulk ceria or for ceria nanoparticles deposited on metal substrates. The increase in the stability of the Ce3+ oxidation state leads to an enhancement in the chemical and catalytic activity of the ceria nanoparticles. The codeposition of ceria and gold nanoparticles on a TiO2(110) substrate generates catalysts with an extremely high activity for the production of hydrogen through the water-gas shift reaction (H2O + CO ? H2 + CO2) or for the oxidation of carbon monoxide (2CO + O2 ? 2CO2). The enhanced stability of the Ce3+ state is an example of structural promotion in catalysis described here on the atomic level. The exploration of mixed-metal oxides at the nanometer level may open avenues for optimizing catalysts through stabilization of unconventional surface structures with special chemical activity.

  17. Mechanistic insights of ethanol steam reforming over Ni-CeOx(111): The importance of hydroxyl groups for suppressing coke formation

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

    Liu, Zongyuan; Senanayake, Sanjaya D.; Duchon, Tomas; Wang, Huanru; Peterson, Erik W.; Zhou, Yinghui; Luo, Si; Zhou, Jing; Matolin, Vladimir; Stacchiola, Dario J.; et al

    2015-07-10

    We have studied the reaction of ethanol and water over Ni–CeO2-x(111) model surfaces to elucidate the mechanistic steps associated with the ethanol steam reforming (ESR) reaction. Our results provide insights about the importance of hydroxyl groups to the ESR reaction over Ni-based catalysts. Systematically, we have investigated the reaction of ethanol on Ni–CeO2-x(111) at varying Ce³? concentrations (CeO1.8–2.0) with absence/presence of water using a combination of soft X-ray photoelectron spectroscopy (sXPS) and temperature-programmed desorption (TPD). Consistent with previous reports, upon annealing, metallic Ni formed on reduced ceria while NiO was the main component on fully oxidized ceria. Ni? is themore »active phase leading to both the C–C and C–H cleavage of ethanol but is also responsible for carbon accumulation or coking. We have identified a Ni?C phase that formed prior to the formation of coke. At temperatures above 600K, the lattice oxygen from ceria and the hydroxyl groups from water interact cooperatively in the removal of coke, likely through a strong metal–support interaction between nickel and ceria that facilitates oxygen transfer.« less

  18. Mechanistic Insights of Ethanol Steam Reforming over Ni–CeO x (111): The Importance of Hydroxyl Groups for Suppressing Coke Formation

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

    Liu, Zongyuan; Ducho?, Tomáš; Wang, Huanru; Peterson, Erik W.; Zhou, Yinghui; Luo, Si; Zhou, Jing; Matolín, Vladimir; Stacchiola, Dario J.; Rodriguez, José A.; et al

    2015-07-30

    We have studied the reaction of ethanol and water over Ni–CeO2-x(111) model surfaces to elucidate the mechanistic steps associated with the ethanol steam reforming (ESR) reaction. Our results provide insights about the importance of hydroxyl groups to the ESR reaction over Ni-based catalysts. Systematically, we have investigated the reaction of ethanol on Ni–CeO2-x(111) at varying Ce³? concentrations (CeO1.8–2.0) with absence/presence of water using a combination of soft X-ray photoelectron spectroscopy (sXPS) and temperature-programmed desorption (TPD). Consistent with previous reports, upon annealing, metallic Ni formed on reduced ceria while NiO was the main component on fully oxidized ceria. Ni? is themore »active phase leading to both the C–C and C–H cleavage of ethanol but is also responsible for carbon accumulation or coking. We have identified a Ni?C phase that formed prior to the formation of coke. At temperatures above 600K, the lattice oxygen from ceria and the hydroxyl groups from water interact cooperatively in the removal of coke, likely through a strong metal–support interaction between nickel and ceria that facilitates oxygen transfer.« less

  19. Investigation of the hydrothermal crystallisation of the perovskite solid solution NaCe{sub 1?x}La{sub x}Ti{sub 2}O{sub 6} and its defect chemistry

    SciTech Connect (OSTI)

    Harunsani, Mohammad H.; Woodward, David I.; Peel, Martin D.; Ashbrook, Sharon E.; Walton, Richard I.

    2013-11-15

    Perovskites of nominal composition NaCe{sub 1?x}La{sub x}Ti{sub 2}O{sub 6} (0?x?1) crystallise directly under hydrothermal conditions at 240 °C. Raman spectroscopy shows distortion from the ideal cubic structure and Rietveld analysis of powder X-ray and neutron diffraction reveals that the materials represent a continuous series in rhombohedral space group R3-bar c. Ce L{sub III}-edge X-ray absorption near edge structure spectroscopy shows that while the majority of cerium is present as Ce{sup 3+} there is evidence for Ce{sup 4+}. The paramagnetic Ce{sup 3+} affects the chemical shift and line width of {sup 23}Na MAS NMR spectra, which also show with no evidence for A-site ordering. {sup 2}H MAS NMR of samples prepared in D{sub 2}O shows the inclusion of deuterium, which IR spectroscopy shows is most likely to be as D{sub 2}O. The deuterium content is highest for the cerium-rich materials, consistent with oxidation of some cerium to Ce{sup 4+} to provide charge balance of A-site water. - Graphical abstract: A multi-element A-site perovskite crystallises directly from aqueous, basic solutions at 240 °C; while the paramagnetic effect of Ce{sup 3+} on the {sup 23}Na NMR shows a homogeneous solid-solution, the incorporation of A-site water is also found from {sup 2}H NMR and IR, with oxidation of some cerium to charge balance proved by XANES spectroscopy. Display Omitted - Highlights: • Direct hydrothermal synthesis allows crystallisation of a perovskite solid-solution. • XANES spectroscopy shows some oxidation of Ce{sup 3+} to Ce{sup 4+}. • The paramagnetism of Ce{sup 3+} shifts and broadens the {sup 23}Na solid-state NMR. • The perovskite materials incorporate water as an A-site defect.

  20. Magnetic properties of CeFe11-xCoxTi with ThMn12 structure

    SciTech Connect (OSTI)

    Zhou, C; Pinkerton, FE; Herbst, JF

    2014-05-07

    A series of novel alloys CeFe11-xCoxTi (0 <= x <= 11) with ThMn12 structure has been successfully prepared by melt-spinning. The Curie temperature T-c increases with Co content x, reaching a maximum of 689 degrees C at x = 9 and declining to 664 degrees C at complete Co filling (x = 11). The room temperature saturation magnetization 4 pi M-s and magnetocrystalline anisotropy H-a have been estimated by fitting the first quadrant demagnetization curve with the Stoner-Wohlfarth model. 4 pi M-s first increases with increasing Co up to x = 3, then decrease. H-a has a complex dependence on Co content, which is indicative of a change in the easy magnetization direction from axis to plane and back as the Co content increases. (C) 2014 AIP Publishing LLC.

  1. Inverse magnetocaloric effect in Ce(Fe{sub 0.96}Ru{sub 0.04}){sub 2}: Effect of fast neutron irradiation

    SciTech Connect (OSTI)

    Dube, V.; Mishra, P. K.; Prajapat, C. L.; Singh, M. R.; Ravikumar, G.; Rajarajan, A. K.; Sastry, P. U.; Thakare, S. V.

    2013-02-05

    We have shown the effect of fast neutron irradiation on the magnetic phase transition and magnetocaloric effect (MCE) in a doped Ce(Fe{sub 0.96}Ru{sub 0.04}){sub 2}, intermettalic. We show that this leads to suppression of MCE and a to a disordered ferromagnetic phase.

  2. Electronic and thermoelectric properties of Ce{sub 3}Te{sub 4} and La{sub 3}Te{sub 4} computed with density functional theory with on-site Coulomb interaction correction

    SciTech Connect (OSTI)

    Vo, Trinh; Allmen, Paul von; Huang, Chen-Kuo; Ma, James; Bux, Sabah; Fleurial, Jean-Pierre [Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109 (United States)

    2014-10-07

    The electronic properties and Seebeck coefficients of Ce{sub 3}Te{sub 4} and La{sub 3}Te{sub 4} are computed using Density Functional Theory with on-site Coulomb interaction correction. We found that the Seebeck coefficients of Ce{sub 3}Te{sub 4} and La{sub 3}Te{sub 4} are almost equal at temperatures larger than the Curie temperature of Ce{sub 3}Te{sub 4}, and in good agreement with the measurements reported by May et al. [Phys. Rev. B 86, 035135 (2012)]. At temperatures below the Curie temperature, the Seebeck coefficient of Ce{sub 3}Te{sub 4} increases due to the ferromagnetic ordering, which leads the f-electron of Ce to contribute to the Seebeck coefficient in the relevant range of electron concentration.

  3. Spin reorientation and Ce-Mn coupling in antiferromagnetic oxypnictide CeMnAsO

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

    Zhang, Qiang; Tian, Wei; Peterson, Spencer G.; Dennis, Kevin W.; Vaknin, David

    2015-02-18

    Structure and magnetic properties of high-quality polycrystlline CeMnAsO, a parent compound of the “1111”-type oxypnictides, have been investigated using neutron powder diffraction and magnetization measurements. We find that CeMnAsO undergoes a C-type antiferromagnetic order with Mn2+(S = 5/2) moments pointing along the c axis below a relatively high Néel temperature of TN = 347(1) K. Below TSR = 35 K, two simultaneous transitions occur where the Mn moments reorient from the c axis to the ab plane preserving the C-type magnetic order, and Ce moments undergo long-range AFM ordering with antiparallel moments pointing in the ab plane. Another transition tomore »a noncollinear magnetic structure occurs below 7 K. The ordered moments of Mn and Ce at 2 K are 3.32(4) ?B and 0.81(4)?B, respectively. We find that CeMnAsO primarily falls into the category of a local-moment antiferromagnetic insulator in which the nearest-neighbor interaction (J1) is dominant with J2 1/2 in the context of J1 – J2 – Jc model. The spin reorientation transition driven by the coupling between Ce and the transition metal seems to be common to Mn, Fe, and Cr ions, but not to Co and Ni ions in the isostructural oxypnictides. As a result, a schematic illustration of magnetic structures in Mn and Ce sublattices in CeMnAsO is presented.« less

  4. Synthesis and crystal structure of two new cerium rhodium oxides: Ce{sub 2/3-x}Rh{sup 3+}{sub 2}O{sub 4} (x{approx}0.12) with Ce mixed valency and Ce{sup 4+}Rh{sup 3+}{sub 2}O{sub 5}

    SciTech Connect (OSTI)

    Mizoguchi, Hiroshi; Zakharov, L.N.; Bhuvanesh, N.S.P.; Sleight, A.W.; Subramanian, M.A.

    2011-06-15

    The new compounds Ce{sub 2/3-x}Rh{sub 2}O{sub 4} (x{approx}0.11-0.14) and CeRh{sub 2}O{sub 5} have been prepared. Their structures were determined from single crystal X-ray diffraction data. Electrical and magnetic properties were also evaluated. Based on the structural analysis and physical properties, oxidation states for CeRh{sub 2}O{sub 5} can be assigned as Ce{sup 4+}Rh{sup 3+}{sub 2}O{sub 5}. A small variation in x was detected for Ce{sub 2/3-x}Rh{sub 2}O{sub 4} indicating a formula ranging from Ce{sup 3.64+}{sub 0.55}Rh{sup 3+}{sub 2}O{sub 4} to Ce{sup 3.81+}{sub 0.525}Rh{sup 3+}{sub 2}O{sub 4}. - Graphical abstract: The new compounds Ce{sub 2/3-x}Rh{sub 2}O{sub 4} (x{approx}0.11-0.14) and CeRh{sub 2}O{sub 5} have been prepared and their structures were determined from single crystal X-ray diffraction data. Electrical and magnetic properties were also evaluated. Highlights: > The new compounds CeRh{sub 2}O{sub 5} and Ce{sub 2/3-x}Rh{sub 2}O{sub 4} (x{approx}0.11-0.14) have been prepared. > Their structures were determined from single crystal X-ray diffraction data. > Valence picture is Ce{sup 4+}Rh{sup 3+}{sub 2}O{sub 5} and Ce{sup 3.64+}{sub 0.55}Rh{sup 3+}{sub 2}O{sub 4} to Ce{sup 3.81+}{sub 0.525}Rh{sup 3+}{sub 2}O{sub 4}.

  5. Destination Choice Model including panel data using WiFi localization in a pedestrian facility

    E-Print Network [OSTI]

    Bierlaire, Michel

    Destination Choice Model including panel data using WiFi localization in a pedestrian facility Loïc data using WiFi localization in a pedestrian facility April 2015 EPFL Destination Choice Model including panel data using WiFi localization in a pedestrian facility Loïc Tinguely, Antonin Danalet

  6. The suburban villa (munya) and court culture in Umayyad Cordoba (756-976 CE)

    E-Print Network [OSTI]

    Anderson, Glaire D

    2005-01-01

    As the capital of the Umayyad dynasty (r. 756 CE-1031 CE), the city of Cordoba developed into one of the most renowned urban centers of the western Mediterranean. The Great Mosque of Cordoba is the outstanding testament ...

  7. Fabrication of CeO2 by sol-gel process based on microfluidic technology as an analog preparation of ceramic nuclear fuel microspheres

    E-Print Network [OSTI]

    Ye, Bin; Li, Jiaolong; Zhao, Zichen; Chang, Zhenqi; Serra, Christophe A

    2012-01-01

    Microfluidics integrated with sol-gel processes is introduced in preparing monodispersed MOX nuclear fuel microspheres using nonactive cerium as a surrogate for uranium or plutonium. The detailed information about microfluidic devices and sol-gel processes are provided. The effects of viscosity and flow rate of continuous and dispersed phase on size and size distribution of CeO2 microspheres have been investigated. A comprehensive characterization of the CeO2 microspheres has been conducted, including XRD pattern, SEM, density, size and size distribution. The size of prepared monodisperse particles can be controlled precisely in range of 10{\\mu}m to 1000{\\mu}m and the particle CV is below 3%.

  8. Fabrication of CeO2 by sol-gel process based on microfluidic technology as an analog preparation of ceramic nuclear fuel microspheres

    E-Print Network [OSTI]

    Bin Ye; Jilang Miao; Jiaolong Li; Zichen Zhao; Zhenqi Chang; Christophe A. Serra

    2012-12-15

    Microfluidics integrated with sol-gel processes is introduced in preparing monodispersed MOX nuclear fuel microspheres using nonactive cerium as a surrogate for uranium or plutonium. The detailed information about microfluidic devices and sol-gel processes are provided. The effects of viscosity and flow rate of continuous and dispersed phase on size and size distribution of CeO2 microspheres have been investigated. A comprehensive characterization of the CeO2 microspheres has been conducted, including XRD pattern, SEM, density, size and size distribution. The size of prepared monodisperse particles can be controlled precisely in range of 10{\\mu}m to 1000{\\mu}m and the particle CV is below 3%.

  9. Quantitative Practice Problems The idea of these problems is to give you practice in manipulating equations. I'll start out

    E-Print Network [OSTI]

    Miller, Cole

    , risking error. The easy way is to realize that the luminosity L fi of the Sun and the luminosity LWD of the white dwarf are related by LWD=L fi = oe4ßR 2 WD T 4 WD =(oe4ßR 2 fi T 4 fi ) = (RWD=R fi ) 2 (T WD=T fi ) 4 : (7) In our case RWD=R fi = 0:01, and TWD=T fi = 10, so LWD=L fi = 1, meaning LWD = L fi = 4

  10. Substitution effect on the magnetic and transport properties of CeNi{sub 0.8?x}Mn{sub x}Bi{sub 2}

    SciTech Connect (OSTI)

    Kim, Soo-Whan; Lee, Kyujoon; Jung, Myung-Hwa; Adroja, D. T.; Demmel, F.; Taylor, J. W.

    2014-08-21

    We report the results of Mn substitution for Ni in CeNi{sub 0.8}Bi{sub 2} (i.e., CeNi{sub 0.8?x}Mn{sub x}Bi{sub 2}). All the samples have an antiferromagnetic ordered state below T{sub N}?=?5.0?K due to localized 4f-magnetic moment on the Ce ions. Besides this antiferromagnetic ordering caused by Ce, the magnetic and transport properties are abruptly changed with increasing Mn contents at the boundary composition of x?=?0.4. The magnetic state is changed into a ferromagnetic state around 200?K for x?>?0.4, where the electrical resistivity is strongly suppressed to become simple metallic. These results of ferromagnetism and metallicity can be explained by the double exchange mechanism, rather than the simple picture of Doniach phase diagram. The mixed valence states of Ni and Mn ions are confirmed by X-ray photoelectron spectroscopy. For x???0.4, the initial Ni{sup 3+} state gradually changes to the Ni{sup 2+} state with increasing x up to 0.4. On further increase of x?>?0.4, the Ni{sup 2+} state is replaced by the Mn{sup 2+} state, which gradually changes to the final Mn{sup 3+} state. We also present an inelastic neutron scattering (INS) measurements on CeNi{sub 0.8}Bi{sub 2} (i.e., x?=?0) between 1.2 and 12?K. The high energy INS study reveals the presence of two well-defined crystal electric field (CEF) excitations near 9?meV and 19?meV at 1.2?K and 6?K, while the low energy INS study reveals the presence of quasielastic scattering above 4?K. We will discuss our INS results of CeNi{sub 0.8}Bi{sub 2} based on the CEF model.

  11. CE 473/573 Groundwater Learning objectives

    E-Print Network [OSTI]

    Rehmann, Chris

    CE 473/573 Groundwater Fall 2011 Learning objectives While the goals of the class are quite general. Identify contemporary issues involving groundwater; explain how solutions that use knowledge of groundwater of piezometric head. Define groundwater divide and compute its properties. Explain how to determine whether

  12. CE 576 Environmental Flows Spring 2012

    E-Print Network [OSTI]

    Rehmann, Chris

    .1. Conservation of mass 1.2. Conservation of momentum 2. Channel flows 2.1. Laminar flow 2.1.1. Flow in a tubeCE 576 Environmental Flows Spring 2012 Course information Instructor: Prof. Chris Rehmann rehmann in environmental fluid mechanics Prerequisites: Elementary fluid mechanics, calculus, differential equations

  13. CE 473/573 Groundwater Learning objectives

    E-Print Network [OSTI]

    Rehmann, Chris

    CE 473/573 Groundwater Fall 2009 Learning objectives While the goals of the class are quite general for various soil types and explain how sorting affects porosity. Explain how results from a groundwater model. Sketch and explain profiles of piezometric head. 7. Define groundwater divide and compute its properties

  14. CE 473/573 Groundwater Course information

    E-Print Network [OSTI]

    Rehmann, Chris

    CE 473/573 Groundwater Fall 2011 Course information Instructor: Prof. Chris Rehmann rehmann of water and contaminants in groundwater systems to solve problems of groundwater resource evaluation and groundwater contamination, to develop thinking skills, to communicate effectively and function on teams

  15. CE 473/573 Groundwater Course information

    E-Print Network [OSTI]

    Rehmann, Chris

    CE 473/573 Groundwater Fall 2009 Course information Instructor: Prof. Chris Rehmann rehmann of water and contaminants in groundwater systems to solve problems of groundwater resource evaluation and groundwater contamination, to develop thinking skills, to communicate effectively and function on teams

  16. High Activity of Ce1-xNixO2-y for H2 Production through Ethanol Steam Reforming: Tuning Catalytic Performance through Metal-Oxide Interactions

    SciTech Connect (OSTI)

    G Zhou; L Barrio; S Agnoli; S Senanayake; J Evans; A Kubacka; M Estrella; J Hanson; A Martinez-Arias; et al.

    2011-12-31

    The importance of the oxide: Ce{sub 0.8}Ni{sub 0.2}O{sub 2-y} is an excellent catalyst for ethanol steam reforming. Metal-oxide interactions perturb the electronic properties of the small particles of metallic nickel present in the catalyst under the reaction conditions and thus suppress any methanation activity. The nickel embedded in ceria induces the formation of O vacancies, which facilitate cleavage of the OH bonds in ethanol and water.

  17. Lu.sub.1-xI.sub.3:Ce.sub.x--a scintillator for gamma ray spectroscopy and time-of-flight PET

    DOE Patents [OSTI]

    Shah, Kanai S.

    2007-02-06

    The present invention concerns very fast scintillator materials comprising lutetium iodide doped with Cerium (Lu.sub.1-xI.sub.3:Ce.sub.x; LuI.sub.3:Ce). The LuI.sub.3 scintillator material has surprisingly good characteristics including high light output, high gamma ray stopping efficiency, fast response, low cost, good proportionality, and minimal afterglow that the material is useful for gamma ray spectroscopy, medical imaging, nuclear and high energy physics research, diffraction, non-destructive testing, nuclear treaty verification and safeguards, and geological exploration. The timing resolution of the scintillators of the present invention provide compositions capable of resolving the position of an annihilation event within a portion of a human body cross-section.

  18. IEEE 802.11ah: Advantages in Standards and Further Challenges for Sub 1 GHz Wi-Fi

    E-Print Network [OSTI]

    Langendoen, Koen

    -Fi, smart grid, IoT, M2M. I. INTRODUCTION It is widely accepted that the dominant indoor (wireless) network phones, thus increasing the competition for unlicensed wireless access in the ISM band. Smart grid to highly congested wireless access systems. In addition, the deployment of wireless smart meter devices

  19. Analysis and Comparison between War Driving and War Walk-ing in Metropolitan WiFi Radio Maps

    E-Print Network [OSTI]

    Chu, Hao-hua

    Analysis and Comparison between War Driving and War Walk- ing in Metropolitan WiFi Radio Maps Arvin, Hsinchu County, 310, Taiwan arvin@itri.org.tw ABSTRACT War-driving is currently the most widely adopted cost for war driv- ing is smaller than that of war walking, its positional accu- racy is also lower

  20. VARUN SINGH ESPOO +358-443450105; varun.singh-at-gmail.com http: // www. netlab. tkk. fi/ ~varun

    E-Print Network [OSTI]

    Ott, Jörg

    VARUN SINGH ESPOO +358-443450105; varun.singh-at-gmail.com http: // www. netlab. tkk. fi/ ~varun with LG Electronics]. ­ "Using RSA for Encrypting Chat over TCP/IP"; Chaitanya V.L., Singh V.; [http., Singh V., Perkins C., Proc. of IEEE Infocom Workshop, Toronto, Canada, Apr, 2014 ­ Considerations

  1. Short communication Chemically abrupt interface between Ce oxide and Fe films

    E-Print Network [OSTI]

    Kim, Sehun

    of an Fe film followed by deposition of Ce metal. Once a Ce oxide layer is formed on top of Fe, it acts.90.+f; 74.25.jb; 79.60 Ài; 79.60.Dp Keywords: MTJ; Ce oxide layer; XPS Magnetic tunneling junctions (MTJ of the oxide layer, resulting in decreased tunneling magneto- resistance and fluctuations in the local

  2. Study of phase relationships in the Sr{sub 3}(PO{sub 4}){sub 2}–CePO{sub 4} system. Phase diagram and thermal characteristics of phases

    SciTech Connect (OSTI)

    Matraszek, Aleksandra, E-mail: aleksandra.matraszek@ue.wroc.pl

    2013-07-15

    A diagram representing phase relationships in the Sr{sub 3}(PO{sub 4}){sub 2}–CePO{sub 4} phosphate system has been developed on the basis of results obtained by thermal analysis (DTA/DSC/TGA) and X-ray diffraction (XRD) methods. One intermediate compound with the formula Sr{sub 3}Ce(PO{sub 4}){sub 3} occurs in the Sr{sub 3}(PO{sub 4}){sub 2}–CePO{sub 4} system at temperatures exceeding 1045 °C. The compound has a eulytite structure with the following structural parameters: a=b=c=10.1655(8) Å, ?=?=?=90.00°, V=1050.46(6) Å{sup 3}. It's melting point exceeds 1950 °C. A limited solid solution exists in the system, which possesses the structure of a low-temperature form of Sr{sub 3}(PO{sub 4}){sub 2}. At 1000 °C the maximal concentration of CePO{sub 4} in the solid solution is below 20 mol%. The solid solution phase field narrows with increased temperature. There is a eutectic point in the (Sr{sub 3}(PO{sub 4}){sub 2}+Sr{sub 3}Ce(PO{sub 4}){sub 3}) phase field at 1765 °C and 15 mol% of CePO{sub 4}. The melting temperature of Sr{sub 3}(PO{sub 4}){sub 2} is 1882±15 °C. - Graphical abstract: The phase diagram of Sr{sub 3}(PO{sub 4}){sub 2}–CePO{sub 4} system showing the stability ranges of limited solid solution and Sr{sub 3}Ce(PO{sub 4}){sub 3} phases. - Highlights: • Sr{sub 3}(PO{sub 4}){sub 2} melts at 1882 °C. • Phase diagram of Sr{sub 3}(PO{sub 4}){sub 2}–CePO{sub 4} system has been proposed. • Limited solid solution of CePO{sub 4} in Sr{sub 3}(PO{sub 4}){sub 2} forms in the system. • The Sr{sub 3}Ce(PO{sub 4}){sub 2} phosphate is stable at temperatures above 1045 °C.

  3. Fall even years Spring odd years CE G7100 Water & Wastewater Quality CE G0800 GIS in WREE

    E-Print Network [OSTI]

    Wolberg, George

    Drinking Water Treatment CE H0800 Applied Hydraulics CE 58300/H8300 Air Pollution and Control CE 56600/H7600 Biological Wastewater Treatment CE 58400/H8400 Solid Waste Management CE 48200 WaterFall even years Spring odd years CE G7100 Water & Wastewater Quality CE G0800 GIS in WREE CE G8100

  4. SiFi: Exploiting VoIP Silence for WiFi Energy Savings in Smart Phones

    E-Print Network [OSTI]

    Zhou, Gang

    ), to its sleep or Power Save Mode (PSM), which consumes little power (36mW). Applications like VoIP do not perform well under PSM mode however, due to their real-time nature, so the energy footprint is quite high WiFi to the Power Save Mode (PSM) which consumes 20 fold less energy (36mW in Sprint HTC Hero

  5. Synthesis of low loss, thermally stable Ce{sub x}Y{sub 1-x}TiTaO{sub 6} microwave ceramics

    SciTech Connect (OSTI)

    Padma Kumar, H.; John, Annamma [Dielectric Materials Research Laboratory, Department of Physics, St. John's College, Anchal, Kollam District, Kerala 691306 (India); Vijayakumar, C. [Department of Physics, Mar Ivanios College, Nalanchira, Thiruvananthapuram, Kerala 695015 (India); Thomas, J.K. [Electronic Materials Research Laboratory, Department of Physics, Mar Ivanios College, Nalanchira, Thiruvananthapuram, Kerala 695015 (India); Varma, Manoj Raama [National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram, Kerala 695015 (India); Solomon, Sam [Dielectric Materials Research Laboratory, Department of Physics, St. John's College, Anchal, Kollam District, Kerala 691306 (India)], E-mail: samdmrl@yahoo.com

    2009-02-04

    Ce{sub x}Y{sub 1-x}TiTaO{sub 6} ceramics were prepared through the solid-state ceramic route. The materials were sintered in the range 1520-1580 deg. C. The structure of the system was analyzed by X-ray diffraction and Raman spectroscopic methods. The cell parameters of solid solutions were calculated using the least square method. The microstructure was analyzed using scanning electron microscopy. The dielectric constant ({epsilon}{sub r}), temperature coefficient of resonant frequency ({tau}{sub f}) and the unloaded quality factor (Q{sub u}) are measured in the microwave frequency region using cavity resonator method. The dielectric constant increases with higher concentrations of Ce in the solid solutions. Nearly zero temperature coefficient of resonant frequency ({tau}{sub f}) was obtained for Ce{sub 0.24}Y{sub 0.76}TiTaO{sub 6}. The samples are of high quality factor and are useful electronic materials for microwave applications.

  6. CO Oxidation at the Interface between Doped CeO2 and Supported Au Nanoclusters

    E-Print Network [OSTI]

    Henkelman, Graeme

    nanoclusters (NCs) supported on either CeO2 or doped (X-Ce)O2 (X = Au, Pt, Pd, Ti, Ru, Zr) show that dopingCO Oxidation at the Interface between Doped CeO2 and Supported Au Nanoclusters Hyun You Kim, we study the e ect of doping on CO oxidation catalyzed by CeO2-supported Au13 NCs and, especially, CO

  7. Commissioning of the 112 MHz SRF Gun and 500 MHz bunching cavities for the CeC PoP Linac

    SciTech Connect (OSTI)

    Belomestnykh, S.; Ben-Zvi, I.; Brutus, J. C.; Litvinenko, V.; McIntosh, P.; Moss, A.; Narayan, G.; Orfin, P.; Pinayev, I.; Rao, T.; Skaritka, J.; Smith, K.; Than, R.; Tuozzolo, J.; Wang, E.; Wheelhouse, A.; Wu, Q.; Xiao, B.; Xin, T.; Xu, W.; Zaltsman, A.

    2015-05-03

    The Coherent electron Cooling Proof-of-Principle (CeC PoP) experiment at BNL includes a short electron linac. During Phase 1, a 112 MHz superconducting RF photo-emission gun and two 500 MHz normal conducting bunching cavities were installed and are under commissioning. The paper describes the Phase1 linac layout and presents commissioning results for the cavities and associated RF, cryogenic and other sub-systems

  8. Study of oxygen reduction mechanism on Ag modified1 Sm1.8Ce0.2CuO4 cathode for solid oxide fuel cell2

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    to oxygen dissociation and diffusion process.26 KEYWORDS: Solid oxide fuel cell; Silver infiltrationStudy of oxygen reduction mechanism on Ag modified1 Sm1.8Ce0.2CuO4 cathode for solid oxide fuel cell2 3 4 Li-Ping Sun1 -- Hui Zhao1 -- Qiang Li1 -- Li-Hua Huo1 -- Jean-Paul Viricelle*2 --5 Christophe

  9. Life Cycle Analysis of the Production of Aviation Fuels Using the CE-CERT Process

    E-Print Network [OSTI]

    Hu, Sangran

    2012-01-01

    of Municipal Sewage Sludge to Produce Synthetic Fuels,5.4 million dry metric tons of sludge annually or 47pounds of sewage sludge (dry weight basis) for every

  10. Life Cycle Analysis of the Production of Aviation Fuels Using the CE-CERT Process

    E-Print Network [OSTI]

    Hu, Sangran

    2012-01-01

    of Municipal Sewage Sludge to Produce Synthetic Fuels,the Use or Disposal of Sewage Sludge; Final Rules, Unitedof Municipal Sewage Sludge to Produce Synthetic Fuels,

  11. Life Cycle Analysis of the Production of Aviation Fuels Using the CE-CERT Process

    E-Print Network [OSTI]

    Hu, Sangran

    2012-01-01

    Conversion of Natural Gas to Transportation Fuels via theTransportation Total energy Fossil fuel Coal Natural gastransportation and distribution Total energy Fossil energy Coal Natural gas

  12. Life Cycle Analysis of the Production of Aviation Fuels Using the CE-CERT Process

    E-Print Network [OSTI]

    Hu, Sangran

    2012-01-01

    predicts that oil usage will peak around 2035. Worldoil reserves are the two main factors that will affect the exact date of the peak.

  13. Role of Ce4+ in the scintillation mechanism of codoped Gd3Ga3Al2O12:Ce

    SciTech Connect (OSTI)

    Wu, Yuntao; Meng, Fang; Li, Qi; Koschan, Merry; Melcher, Charles L.

    2014-10-17

    To control the time-response performance of widely used cerium-activated scintillators in cutting-edge medical-imaging devices, such as time-of-flight positron-emission tomography, a comprehensive understanding of the role of Ce valence states, especially stable Ce4+, in the scintillation mechanism is essential. However, despite some progress made recently, an understanding of the physical processes involving Ce4+ is still lacking. The aim of this work is to clarify the role of Ce4+ in scintillators by studying Ca2+ codoped Gd3Ga3Al2O12?Ce?(GGAG?Ce). By using a combination of optical absorption spectra and x-ray absorption near-edge spectroscopies, the correlation between Ca2+codoping content and the Ce4+ fraction is seen. The energy-level diagrams of Ce3+ and Ce4+ in the Gd3Ga3Al2O12 host are established by using theoretical and experimental methods, which indicate a higher position of the 5d1 state of Ce4+ in the forbidden gap in comparison to that of Ce3+. Underlying reasons for the decay-time acceleration resulting from Ca2+ codoping are revealed, and the physical processes of the Ce4+-emission model are proposed and further demonstrated by temperature-dependent radioluminescence spectra under x-ray excitation.

  14. Improved Laboratory Transition Probabilities for Ce II, Application to the Cerium Abundances of the Sun and Five r-process Rich, Metal-Poor Stars, and Rare Earth Lab Data

    E-Print Network [OSTI]

    Lawler, J E; Cowan, J J; Ivans, I I; Hartog, E A Den

    2009-01-01

    Recent radiative lifetime measurements accurate to +/- 5% using laser-induced fluorescence (LIF) on 43 even-parity and 15 odd-parity levels of Ce II have been combined with new branching fractions measured using a Fourier transform spectrometer (FTS) to determine transition probabilities for 921 lines of Ce II. This improved laboratory data set has been used to determine a new solar photospheric Ce abundance, log epsilon = 1.61 +/- 0.01 (sigma = 0.06 from 45 lines), a value in excellent agreement with the recommended meteoritic abundance, log epsilon = 1.61 +/- 0.02. Revised Ce abundances have also been derived for the r-process-rich metal-poor giant stars BD+17 3248, CS 22892-052, CS 31082-001, HD 115444 and HD 221170. Between 26 and 40 lines were used for determining the Ce abundance in these five stars, yielding a small statistical uncertainty of 0.01 dex similar to the Solar result. The relative abundances in the metal-poor stars of Ce and Eu, a nearly pure r-process element in the Sun, matches r-process ...

  15. On the complexity of representing sets of vertices in the n-cube Miguel Couceiro

    E-Print Network [OSTI]

    Földes, Stephan

    of Tampere, FI-33014 Tampereen yliopisto, Finland, miguel.couceiro@uta.fi. Research partially supported of Mathematics, Tampere University of Technology, P.O. Box 553, FI-33101 Tampere, Finland, stephan.foldes@tut. fi Institute of Mathematics, Tampere University of Technology, P.O. Box 553, FI-33101 Tampere, Finland, erkko

  16. ASKO Appliances: Order (2012-CE-19/2004) | Department of Energy

    Energy Savers [EERE]

    and clothes washers comply with the applicable energy and water conservation standards. DOE assessed a higher civil penalty due to a prior history of the same type of violation....

  17. New York University -Stern School of Business Working paper CeDER-11-01

    E-Print Network [OSTI]

    Provost, Foster

    ' Classifications David Martens Faculty of Applied Economics, University of Antwerp, Belgium David, Instance Level Explanation, Text mining, Comprehensibility 1. Introduction Document classification aims for this paper, and different from many data mining applications, the document classification data representation

  18. Reportonoperations2009 stAteMent of CoMpliAnCe

    E-Print Network [OSTI]

    Mucina, Ladislav

    Australia's bid for the $3 billion square Kilometre Array · allocation of $20.5 million from the education

  19. Level structure of the odd mass Pr isotopes. III. Levels of [sup 147]Pr[sub 88] populated in the beta decay of 56-s [sup 147]Ce

    SciTech Connect (OSTI)

    Mantica, P.F. (Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742 (United States) UNISOR, Oak Ridge Institute for Science Education, Oak Ridge, Tennessee 37831 (United States)); Robertson, J.D.; Baum, E.M.; Walters, W.B. (Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742 (United States))

    1993-10-01

    The structure of [sup 147]Pr has been investigated by performing measurements of [gamma]-ray and conversion-electron singles and [gamma][gamma] coincidence spectra of mass separated sources of 56-s [sup 147]Ce. The proposed level scheme extends the known structure of [sup 147]Pr to an energy of 2.2 MeV and includes several levels below 1.2 MeV that have not been identified in previous decay studies of [sup 147]Ce. Measurement of the conversion coefficients for several transitions has led to the assignment of negative parity to the levels at 362, 452, 467, and 608 keV in [sup 147]Pr, which show properties similar to low-energy negative-parity states identified in [sup 145]Pr[sub 86], [sup 145]La[sub 88], and [sup 149]Pm[sub 88]. The presence of low-energy negative-parity states suggests that configurations having significantly different deformation, related to the highly deformed region above [ital N]=90 and/or to the reflection asymmetric region identified around [sup 145]Ba, may manifest themselves at low energy in these nuclides.

  20. Hierarchical Heterogeneity at the CeO x –TiO 2 Interface: Electronic and Geometric Structural Influence on the Photocatalytic Activity of Oxide on Oxide Nanostructures

    SciTech Connect (OSTI)

    Luo, Si; Nguyen-Phan, Thuy-Duong; Johnston-Peck, Aaron C.; Barrio, Laura; Sallis, Shawn; Arena, Dario A.; Kundu, Shankhamala; Xu, Wenqian; Piper, Louis F. J.; Stach, Eric A.; Polyanskiy, Dmitry E.; Fujita, Etsuko; Rodriguez, José A.; Senanayake, Sanjaya D.

    2015-01-13

    Mixed oxide interfaces are critical for delivering active components of demanding catalytic processes such as the photo-catalytic splitting of water. We have studied CeOxTiO? catalysts with low ceria loadings of 1 wt%, 3 wt% and 6 wt% that were prepared with wet impregnation methods to favor a strong interaction between CeOx and TiO?. In these materials the interfaces between CeOx-TiO? have been sequentially loaded (1%, 3% and 6%), with and without Pt (0.5 wt%). The structure and properties of the catalysts were characterized using several X-ray and electron based techniques including XRD, XPS, UPS, NEXAFS, UV-Vis and HR-STEM/STEM-EELS, to unravel the local morphology, bulk structure, surface states and electronic structure. The combination of all these techniques allow us to analyze in a systematic way the complete structural and electronic properties that prevail at the CeOx-TiO? interface. Fluorite structured nano crystallites of ceria on anatase-structured titania were identified by both XRD and NEXAFS. A sequential increasing of the CeOx loading led to the formation of clusters, then plates and finally nano particles in a hierarchical manner on the TiO? support. The electronic structures of these catalysts indicate that the interaction between TiO? and CeO? is closely related to the local morphology of nanostructured CeO?. Ce³? cations were detected at the surface of CeO? and at the interface of the two oxides. In addition, the titania is perturbed by the interaction with ceria and also with Pt. The photocatalytic activity for the splitting of H?O using UV light was measured for these materials and correlated with our understanding of the electronic and structural properties. Optimal catalytic performance and photo response results were found for the 1 wt% CeOx-TiO? catalyst where low dimensional geometry of the ceria provided ideal electronic and geometrical properties. The structural and electronic properties of the interface were critical for the photocatalytic performance of this mixed-oxide nanocatalyst system.

  1. Surface-structure sensitivity of CeO2 nanocrystals in photocatalysis...

    Office of Scientific and Technical Information (OSTI)

    heterogeneous (photo)catalysis. In this study, using aberration-corrected scanning transmission electron microscopy (STEM), the atomic surface structures of well-defined...

  2. Polyhedral Shapes of CeO2 Nanoparticles Zhong Lin Wang*, and Xiangdong Feng

    E-Print Network [OSTI]

    Wang, Zhong L.

    Ceria nanoparticles are a widely used nanomaterial for applications in catalysts, fuel cell are one of the most important nanoma- terials for a wide range of applications in catalysts,1,2 fuel cell are likely to affect their performance in technological applications. 1. Introduction Ceria nanoparticles

  3. Cost objective PLM and CE

    E-Print Network [OSTI]

    Nicolas Perry; Alain Bernard

    2010-11-26

    Concurrent engineering taking into account product life-cycle factors seems to be one of the industrial challenges of the next years. Cost estimation and management are two main strategic tasks that imply the possibility of managing costs at the earliest stages of product development. This is why it is indispensable to let people from economics and from industrial engineering collaborates in order to find the best solution for enterprise progress for economical factors mastering. The objective of this paper is to present who we try to adapt costing methods in a PLM and CE point of view to the new industrial context and configuration in order to give pertinent decision aid for product and process choices. A very important factor is related to cost management problems when developing new products. A case study is introduced that presents how product development actors have referenced elements to product life-cycle costs and impacts, how they have an idea bout economical indicators when taking decisions during the progression of the project of product development.

  4. Insensitivity of the pressure dependences of characteristic energy scales in Ce1–xRxCoIn? (R=Yb,Y,Gd) to the electronic configuration of the rare-earth ion

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

    White, B. D.; Hamlin, J. J.; Huang, K.; Shu, L.; Lum, I. K.; Baumbach, R. E.; Janoschek, M.; Maple, M. B.

    2012-09-11

    Cooperative Ce and Yb valence fluctuations have recently been proposed as the mechanism responsible for stabilizing correlated electron phenomena in Ce??xYbxCoIn? over an unexpectedly large range of concentrations. In order to better understand the origins and character of this stability, we have measured the effect of applied pressure on relevant energy scales such as the superconducting critical (Tc) and Kondo-lattice coherence (T*) temperatures of Ce??xRxCoIn? with R=Yb, Y, and Gd. Electrical resistivity measurements were performed under applied pressure on samples doped with intermediate-valent Yb and stable-valent Gd and Y, and the responses of Tc and T* to increased pressure inmore »these systems are compared. The character of Tc(P) and T*(P) in Ce??xRxCoIn? depends only on their respective ambient-pressure values Tc(0) and T*(0), independent of the electronic configuration of R or concentration x. The consequences of this result are discussed within the context of possible cooperative valence fluctuations in Ce??xYbxCoIn?.« less

  5. Insensitivity of the pressure dependences of characteristic energy scales in Ce1–xRxCoIn? (R=Yb,Y,Gd) to the electronic configuration of the rare-earth ion

    SciTech Connect (OSTI)

    White, B. D.; Hamlin, J. J.; Huang, K.; Shu, L.; Lum, I. K.; Baumbach, R. E.; Janoschek, M.; Maple, M. B.

    2012-09-01

    Cooperative Ce and Yb valence fluctuations have recently been proposed as the mechanism responsible for stabilizing correlated electron phenomena in Ce??xYbxCoIn? over an unexpectedly large range of concentrations. In order to better understand the origins and character of this stability, we have measured the effect of applied pressure on relevant energy scales such as the superconducting critical (Tc) and Kondo-lattice coherence (T*) temperatures of Ce??xRxCoIn? with R=Yb, Y, and Gd. Electrical resistivity measurements were performed under applied pressure on samples doped with intermediate-valent Yb and stable-valent Gd and Y, and the responses of Tc and T* to increased pressure in these systems are compared. The character of Tc(P) and T*(P) in Ce??xRxCoIn? depends only on their respective ambient-pressure values Tc(0) and T*(0), independent of the electronic configuration of R or concentration x. The consequences of this result are discussed within the context of possible cooperative valence fluctuations in Ce??xYbxCoIn?.

  6. Insensitivity of the pressure dependences of characteristic energy scales in Ce1–xRxCoIn? (R=Yb,Y,Gd) to the electronic configuration of the rare-earth ion

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

    White, B. D.; Hamlin, J. J.; Huang, K.; Shu, L.; Lum, I. K.; Baumbach, R. E.; Janoschek, M.; Maple, M. B.

    2012-09-01

    Cooperative Ce and Yb valence fluctuations have recently been proposed as the mechanism responsible for stabilizing correlated electron phenomena in Ce??xYbxCoIn? over an unexpectedly large range of concentrations. In order to better understand the origins and character of this stability, we have measured the effect of applied pressure on relevant energy scales such as the superconducting critical (Tc) and Kondo-lattice coherence (T*) temperatures of Ce??xRxCoIn? with R=Yb, Y, and Gd. Electrical resistivity measurements were performed under applied pressure on samples doped with intermediate-valent Yb and stable-valent Gd and Y, and the responses of Tc and T* to increased pressure in these systems are compared. The character of Tc(P) and T*(P) in Ce??xRxCoIn? depends only on their respective ambient-pressure values Tc(0) and T*(0), independent of the electronic configuration of R or concentration x. The consequences of this result are discussed within the context of possible cooperative valence fluctuations in Ce??xYbxCoIn?.

  7. Structure and magnetic properties of Ce?(Ni/Al/Ga)??-A...

    Office of Scientific and Technical Information (OSTI)

    Z 2) with a 436.38(14), b 1004.5(3) and c 1293.4(4) pm. This is a standardized unit cell of the previously published LaAl structure type. Wavelength dispersive...

  8. Materials Data on CeOF (SG:216) by Materials Project

    SciTech Connect (OSTI)

    Kristin Persson

    2014-11-02

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

  9. Alternate method of decay-heat removal in a C-E plant following a SBLOCA

    SciTech Connect (OSTI)

    Boyack, B.E.

    1986-01-01

    The use of an atmospheric steam-dump procedure to cool and depressurize a Combustion-Engineering plant, Calvert Cliffs-1, following small-break loss-of-coolant accidents with failure of the high-pressure injection system to operate has been investigated. The procedure was effective in depressuizing the primary to the low-pressure injection system operating pressure and design temperature using water supplies from the safety-grade condensate water storage tank only. The procedure was found to be effective even if additional failures occurred. Specifically, low-pressure injection conditions were attained if only a single atmospheric dump valve was available or if the safety-injection tanks (accumulators) were not available.

  10. ASKO Appliances: Order (2012-CE-19/2004) | 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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i n c i p a l De p u t y A s sconveyance of9, 2013 ASER Web AddressesDOE ordered

  11. *Corresponding author. E-mail: kareem@navier.ce.nd.edu. Journal of Wind Engineering

    E-Print Network [OSTI]

    Kareem, Ahsan

    to improve its performance under wind and seismic loads. Completed in May 1993, the VIP lounge may experience towers have a distinct structural profile consisting of several structural shapes, e.g. circular observation decks and support systems with vertical or flared legs. Such a configuration often makes

  12. Intrinsic Noise of microRNA-Regulated Genes and the ceRNA Hypothesis

    E-Print Network [OSTI]

    Mehta, Pankaj

    machinery and modes of action (catalytic vs stoichiometric), the mean expression levels and noise profiles had no role in study design, data collection and analysis, decision to publish, or preparation,19] or be mediated by extra machinery such as RNA chaperone Hfq [20­22]. This suggests that prokaryotic sRNAs, unlike

  13. Neutron Scattering of CeNi at the SNS-ORNL: A Preliminary Report

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield MunicipalTechnical Report: AchievementsTemperatures Year 6 -FINALEnergy,Pacific

  14. Momentum-space structure of quasielastic spin fluctuations in Ce 3 Pd 20 Si

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfate Reducing(JournalspectroscopyReport)Fermentative ActivitySciTechComplementary6 (Journal Article)

  15. Neutron Scattering of CeNi at the SNS-ORNL: A Preliminary Report

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTech Connect Nanomechanical switch for| SciTech Connect NeutronSciTech(Conference) |

  16. Neutron Scattering of CeNi at the Spallation Neutron Source at Oak Ridge

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTech Connect Nanomechanical switch for| SciTech Connect NeutronSciTech(Conference)

  17. Neutron Scattering of CeNi at the Spallation Neutron Source at Oak Ridge

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTech Connect Nanomechanical switch for| SciTech Connect

  18. Neutron scattering of CeNi at the SNS-ORNL: A preliminary report

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTech Connect Nanomechanical switch for| SciTech ConnectSciTechNeutron

  19. Center for Excitonics (CE) | U.S. DOE Office of Science (SC)

    Office of Science (SC) Website

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust,Field-effectWorkingLosThe 26thIWalter H. Zinn, 1969CALCDOffice of ScienceCenter for

  20. Neutron diffraction study of magnetic field induced behavior in the heavy Fermion Ce3Co4Sn13

    SciTech Connect (OSTI)

    Christianson, Andrew D; Goremychkin, E. A.; Gardner, J. S.; Kang, H. J.; Chung, J.-H.; Manuel, P.; Thompson, J. D.; Sarrao, J. L.; Lawrence, J. M.

    2008-01-01

    The specific heat of Ce3Co4Sn13 exhibits a crossover from heavy Fermion behavior with antiferromagnetic correlations at low field to single impurity Kondo behavior above 2 T. We have performed neutron diffraction measurements in magnetic fields up to 6 Tesla on single crystal samples. The (001) position shows a dramatic increase in intensity in field which appears to arise from static polarization of the 4f level and which at 0.14 K also exhibits an anomaly near 2T reflecting the crossover to single impurity behavior.

  1. Synthesis and crystal structure of the isotypic rare earth thioborates Ce[BS{sub 3}], Pr[BS{sub 3}], and Nd[BS{sub 3}

    SciTech Connect (OSTI)

    Hunger, Jens; Borna, Marija [Max Planck Institute for Chemical Physics of Solids, Noethnitzer Strasse 40, D-01187 Dresden (Germany); Kniep, Ruediger, E-mail: kniep@cpfs.mpg.d [Max Planck Institute for Chemical Physics of Solids, Noethnitzer Strasse 40, D-01187 Dresden (Germany)

    2010-03-15

    The orthothioborates Ce[BS{sub 3}], Pr[BS{sub 3}] and Nd[BS{sub 3}] were prepared from mixtures of the rare earth (RE) metals together with amorphous boron and sulfur summing up to the compositions CeB{sub 3}S{sub 6}, PrB{sub 5}S{sub 9} and NdB{sub 3}S{sub 6}. The following preparation routes were used: solid state reactions with maximum temperatures of 1323 K and high-pressure high-temperature syntheses at 1173 K and 3 GPa. Pr[BS{sub 3}] and Nd[BS{sub 3}] were also obtained from rare earth chlorides RECl{sub 3} and sodium thioborate Na{sub 2}B{sub 2}S{sub 5} by metathesis type reactions at maximum temperatures of 1073 K. The crystal structure of the title compounds was determined from X-ray powder diffraction data. The thioborates are isotypic and crystallize in the orthorhombic spacegroup Pna2{sub 1} (No. 33; Z=4; Ce: a=7.60738(6)A, b=6.01720(4)A, c=8.93016(6)A; Pr: a=7.56223(4)A, b=6.00876(2)A, c=8.89747(4)A; Nd: a=7.49180(3)A, b=6.00823(2)A, c=8.86197(3)A) . The crystal structures contain isolated [BS{sub 3}]{sup 3-} groups with boron in trigonal-planar coordination. The sulfur atoms form the vertices of undulated kagome nets, which are stacked along [100] according to the sequence ABAB. Within these nets every second triangle is occupied by boron and the large hexagons are centered by rare earth ions, which are surrounded by overall nine sulfur species. - Abstract: Graphical Abstract Legend (TOC Figure): Table of Contents Figure The isotypic orthothioborates Ce[BS{sub 3}], Pr[BS{sub 3}] and Nd[BS{sub 3}] were prepared using different preparation routes. The crystal structure of the title compounds was determined from X-ray powder diffraction data. The crystal structures contain isolated [BS{sub 3}]{sup 3-} groups with boron in trigonal-planar coordination. The sulfur atoms form the vertices of corrugated kagome nets (sketched with blue dotted lines), which are stacked along [100] according to the sequence ABAB. Within these nets every second triangle is occupied by boron and the large hexagons are centered by rare earth ions, which are surrounded by overall nine sulfur species.

  2. Effect of Tb{sup 3+} concentration on the optical and vibrational properties of YBO{sub 3} tri-doped with Eu{sup 3+}, Ce{sup 3+}, and Tb{sup 3+}

    SciTech Connect (OSTI)

    Sohal, S.; Hassanzadeh, E.; Huang, J. Y. [Department of Physics, Texas Tech University and Nano Tech Center, Lubbock, Texas 79409 (United States); Nazari, M.; Holtz, M., E-mail: mark.holtz@txstate.edu [Department of Physics, Texas State University, San Marcos, Texas 78666 (United States); Zhang, X.; Chaudhuri, J. [Department of Mechanical Engineering, Texas Tech University, Lubbock, Texas 79409 (United States); Kuryatkov, V. V. [Department of Electrical and Computer Engineering and Nano Tech Center, Texas Tech University, Lubbock, Texas 79409 (United States); Hope-Weeks, L. J. [Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409 (United States)

    2014-05-14

    Structural and optical studies are reported of yttrium orthoborate YBO{sub 3} when tri-doped with Eu{sup 3+}, Ce{sup 3+}, and Tb{sup 3+}, focusing on the role of terbium concentration. Incorporation of Tb{sup 3+} affects emission properties for photoluminescence (PL) excited by near ultraviolet light. For constant cerium and europium concentrations, increasing the Tb{sup 3+} results in diminished PL from the Ce{sup 3+} and Tb{sup 3+} color centers. Simultaneously, the PL excitation bands related to both Ce{sup 3+} and Tb{sup 3+} increase in intensity for red emission from the Eu{sup 3+}. Results are consistent with a Ce{sup 3+}???(Tb{sup 3+}){sub n}???Eu{sup 3+} energy transfer scheme, where (Tb{sup 3+}){sub n} denotes a chain incorporating n terbium ions. A high red to orange PL intensity ratio is obtained, ranging from 1.34 to 2.09. Raman vibrational bands show a systematic change, with Tb{sup 3+} concentration, in the B{sub 3}O{sub 9} ring terminal oxygen bending mode coordinated with the yttrium site where dopant ions substitute. The structural changes are interpreted as variations in the local neighborhood of these sites in the YBO{sub 3}:Ce{sup 3+},Tb{sup 3+},Eu{sup 3+} crystal structure.

  3. Ca2+-Doped CeBr3 Scintillating Materials

    SciTech Connect (OSTI)

    Guss, Paul; Foster, Michael E.; Wong, Bryan M.; Doty, F. Patrick; Shah, Kanai; Squillante, Michael R.; Shirwadkar, Urmila; Hawrami, Rastgo; Tower, Josh; Yuan, Ding

    2014-01-21

    Despite the outstanding scintillation performance characteristics of cerium tribromide (CeBr3) and cerium-activated lanthanum tribromide, their commercial availability and application are limited due to the difficulties of growing large, crack-free single crystals from these fragile materials. This investigation employed aliovalent doping to increase crystal strength while maintaining the optical properties of the crystal. One divalent dopant (Ca2+) was used as a dopant to strengthen CeBr3 without negatively impacting scintillation performance. Ingots containing nominal concentrations of 1.9% of the Ca2+ dopant were grown. Preliminary scintillation measurements are presented for this aliovalently doped scintillator. Ca2+-doped CeBr3 exhibited little or no change in the peak fluorescence emission for 371 nm optical excitation for CeBr3. The structural, electronic, and optical properties of CeBr3 crystals were studied using the density functional theory within the generalized gradient approximation. The calculated lattice parameters are in good agreement with the experimental data. The energy band structures and density of states were obtained. The optical properties of CeBr3, including the dielectric function, were calculated.

  4. ZiFi: Wireless LAN Discovery via ZigBee Interference Ruogu Zhou1

    E-Print Network [OSTI]

    Xing, Guoliang

    ZiFi: Wireless LAN Discovery via ZigBee Interference Signatures Ruogu Zhou1 , Yongping Xiong2- ronments. In this work, we develop a system called ZiFi that utilizes ZigBee radios to identify integrating a TelosB mote through the USB interface, and a Nokia N73 smart- phone integrating a ZigBee card

  5. Avoiding the Rush Hours: WiFi Energy Management via Traffic Isolation

    E-Print Network [OSTI]

    Shihada, Basem

    Avoiding the Rush Hours: WiFi Energy Management via Traffic Isolation Justin Manweiler Duke in a proportional decrease in battery life. We design SleepWell, a system that achieves energy efficiency by evading to turn off the de- vice whenever beneficial. While WiFi energy efficiency has progressively improved

  6. Journal of Electron Spectroscopy and Related Phenomena 136 (2004) 1520 Temperature-dependence of Kondo resonance in CeSi2 studied by

    E-Print Network [OSTI]

    Oh, Se-Jung

    2004-01-01

    ). heavy-electron compounds [7]. In Ce-based heavy Fermion systems, the Kondo energy scale, , typically spectroscopy (RPES); Single impurity Anderson model (SIAM) 1. Introduction In the photoemission community, Ce photoemission (UPS) can reach this resolution limits currently. The most commonly used method to extract the 4f

  7. Electrical and dielectric properties of ZnO and CeO{sub 2} doped ZrTi{sub 2}O{sub 6} ceramic

    SciTech Connect (OSTI)

    George, Aneesh; Thomas, Jijimon K.; John, Annamma [Department of Physics, Mar Ivanios College, Thiruvananthapuram 695015 (India); Solomon, Sam, E-mail: samdmrl@yahoo.com [Department of Physics, Mar Ivanios College, Thiruvananthapuram 695015, India and Department of Physics, St. John's College, Anchal, Kollam 691306 (India)

    2014-01-28

    Zirconium oxide (ZrO{sub 2}) and titanium dioxide (TiO{sub 2}) are the important catalyst supports, since it has acidic and basic properties. The intermediate phase zirconium titanate ZrTi{sub 2}O{sub 6}, which is a solid solution with Zr:Ti ratio 1:2 has outstanding dielectric properties. The effects of doping of ZnO and CeO{sub 2} on the dielectric and electrical properties of ZrTi{sub 2}O{sub 6} ceramic are investigated. On adding 0.5 wt% ZnO, the dielectric constant is increased but, on adding CeO{sub 2}, the dielectric constant is decreased. The bulk density of pure sample sintered at 1530 °C is 91% of theoretical density while that of the doped samples sintered at 1450 °C is more than 94% of theoretical density. Scanning electron micrographs reveal that the samples are well sintered with minimum porosity. The semicircle behavior in the Cole-Cole plots at room temperature reveals that the samples are good ionic conductor. The induced impedance is reduced for doped samples and this can be used as a material for electrolyte in Solid Oxide Fuel Cell.

  8. COMPARISON OF NOISE ROBUST METHODS IN LARGE VOCABULARY SPEECH RECOGNITION

    E-Print Network [OSTI]

    Virtanen, Tuomas

    University of Technology P.O. Box 553, FI-33101 Tampere, Finland phone: + (358) 331154798, email: firstname: firstname.lastname@hut.fi, web: www.cis.hut.fi/projects/speech/ 2 Department of Signal Processing, Tampere

  9. WiFi Meet FuFi: Disruptive Innovation in Logistics Catalysed by Energy

    E-Print Network [OSTI]

    Datta, Shoumen

    2008-07-30

    Cost of energy per unit of goods or services is likely to evolve as a key differentiator of economic growth. The debt of nations will be re-structured. Corporations, big or small, may not escape from managing their energy ...

  10. WiFi Meet FuFi: Research Topics in SCM and DSS

    E-Print Network [OSTI]

    Datta, Shoumen

    2008-07-31

    Disruptive innovation catalysed by energy (carbon footprint) may reshape supply chain and logistics. The continents of Europe, Asia and Africa may evolve as a connected value network through railroad logistics.

  11. Electronic structure of Ce?RhIn?: A two-dimensional heavy-fermion system studied by angle-resolved photoemission spectroscopy

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

    Jiang, Rui; Petrovic, C.; Mou, Daixing; Liu, Chang; Zhao, Xin; Yao, Yongxin; Ryu, Hyejin; Ho, Kai -Ming; Kaminski, Adam

    2015-04-01

    We use angle-resolved photoemission spectroscopy (ARPES) to study the 2D heavy fermion superconductor, Ce?RhIn?. The Fermi surface is rather complicated and consists of several hole and electron pockets with one of the sheets displaying strong nesting properties with a q-vector of (0.32, 0.32) ?/a. We do not observe kz dispersion of the Fermi sheets, which is consistent with the expected 2D character of the electronic structure. Comparison of the ARPES data to band structure calculations suggests that a localized picture of the f-electrons works best. While there is some agreement in the overall band dispersion and location of the Fermimore »sheets, the model does not reproduce all observed bands and is not completely accurate for those it does. Our data paves the way for improving the band structure calculations and the general understanding of the transport and thermodynamical properties of this material.« less

  12. Electronic structure of Ce2RhIn8: A two-dimensional heavy-fermion system studied by angle-resolved photoemission spectroscopy

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

    Jiang, Rui; Mou, Daixing; Liu, Chang; Zhao, Xin; Yao, Yongxin; Ryu, Hyejin; Petrovic, C.; Ho, Kai -Ming; Kaminski, Adam

    2015-04-01

    We use angle-resolved photoemission spectroscopy (ARPES) to study the 2D heavy fermion superconductor, Ce?RhIn?. The Fermi surface is rather complicated and consists of several hole and electron pockets with one of the sheets displaying strong nesting properties with a q-vector of (0.32, 0.32) ?/a. We do not observe kz dispersion of the Fermi sheets, which is consistent with the expected 2D character of the electronic structure. Comparison of the ARPES data to band structure calculations suggests that a localized picture of the f-electrons works best. While there is some agreement in the overall band dispersion and location of the Fermimore »sheets, the model does not reproduce all observed bands and is not completely accurate for those it does. As a result, our data paves the way for improving the band structure calculations and the general understanding of the transport and thermodynamical properties of this material.« less

  13. 15N2 formation and fast oxygen isotope exchange during pulsed 15N18O exposure of MnOx/CeO2

    SciTech Connect (OSTI)

    Kwak, Ja Hun; Szanyi, Janos

    2014-12-23

    Pulsing 15N18O onto an annealed 1% Mn16Ox/Ce16O2 catalyst resulted in very fast oxygen isotope exchange and 15N2 formation at 295 K. In the 1st 15N18O pulse, due to the presence of large number of surface oxygen defects, extensive 15N218O and 15N2 formations were observed. In subsequent pulses oxygen isotope exchange dominated as a result of highly labile oxygen in the oxide. We gratefully acknowledge the US Department of Energy (DOE), Office of Energy Efficiency and Renewable Energy/Vehicle Technologies Program for the support of this work. The research described in this paper was performed at the Environmental Molecular Sciences Laboratory (EMSL), a national scientific user facility sponsored by the DOE’s Office of Biological and Environmental Research and located at Pacific Northwest National Laboratory (PNNL). PNNL is operated for the US DOE by Battelle.

  14. Dielectric relaxation from a network of charged defects in dilute CeO/sub 2/:Y/sub 2/O/sub 3/ solid solutions

    SciTech Connect (OSTI)

    Wang, D.Y.; Nowick, A.S.

    1981-01-01

    Solid solutions of Y/sub 2/O/sub 3/ in CeO/sub 2/ are examined by the thermal depolarization (or ITC) method of dielectric relaxation. For concentrations less than or equal to 1 m/o Y/sub 2/O/sub 3/, two peaks are observed. The lower temperature peak, Peak 1, is interpreted as due to the relaxation of nn YV/sub 0/ pairs (where V/sub 0/ = oxygen vacancy, and is analogous to the well-known CaV/sub 0/ pair obtained with Ca/sup 2 +/ doping. The upper peak, Peak 2, on the other hand, is a broad peak whose position is a function of concentration. It is not due to simple dipoles, but originates in the network of alternately charged (YV/sub 0/)/sup ./ pairs and isolated Y' defects by redistribution of vacancies.

  15. Capillary electrophoresis-fluorescence line narrowing system (CE-FLNS) for on-line structural characterization

    DOE Patents [OSTI]

    Jankowiak, Ryszard J. (Ames, IA); Small, Gerald J. (Ames, IA); Shields, Peter A. (Reading, MA)

    1999-04-27

    Capillary electrophoresis (CE) is interfaced with low temperature fluorescence line-narrowing (FLN) spectroscopy for on-line structural characterization of separated molecular analytes.

  16. Capillary electrophoresis-fluorescence line narrowing system (CE-FLNS) for on-line structural characterization

    DOE Patents [OSTI]

    Jankowiak, R.J.; Small, G.J.; Shields, P.A.

    1999-04-27

    Capillary electrophoresis (CE) is interfaced with low temperature fluorescence line-narrowing (FLN) spectroscopy for on-line structural characterization of separated molecular analytes. 21 figs.

  17. Ground state properties of even-even and odd Nd,Ce and Sm isotopes in Hartree-Fock-Bogoliubov method

    E-Print Network [OSTI]

    Younes El Bassem; Mustapha Oulne

    2015-10-06

    In this work, we have studied ground-state properties of both even-even and odd Nd isotopes within Hartree-Fock-Bogoliubov method with SLy5 Skyrme force in which the pairing strength has been generalized with a new proposed formula. We calculated bind- ing energies, two-neutron separation energies, quadrupole deformation, charge, neutron and proton radii. Similar calculations have been carried out for Ce and Sm in order to verify the validity of our pairing strength formula. The results have been compared with available experimental data, the results of Hartree-Fock-Bogoliubov calculations based on the D1S Gogny effective nucleon-nucleon interaction and predictions of some nuclear models such as Finite Range Droplet Model (FRDM) and Relativistic Mean Field (RMF) theory.

  18. HiFi: A New Monitoring Architecture for Distributed Systems Management Ehab AlShaer Hussein AbdelWahab and Kurt Maly

    E-Print Network [OSTI]

    Wang, Yongge

    , and a programmable environment that facilitates devel­ opment of self­directed monitoring tasks. Increased flexiHiFi: A New Monitoring Architecture for Distributed Systems Management Ehab Al­Shaer Hussein Abdel,maly)@cs.odu.edu Abstract With the increasing complexity of large­scale distributed (LSD) systems, an efficient monitoring

  19. A QuArterly Newsletter showcAsiNg News ANd highlights from the eNtrepreNeuriAl ecosystem At the uNiversity of ceNtrAl floridA

    E-Print Network [OSTI]

    Van Stryland, Eric

    Renewable Energy Inc. has secured an exclusive license to the technology and plans to expand its commercialNtrepreNeuriAl ecosystem At the uNiversity of ceNtrAl floridA New UCF Tech May Lead To Inexpensive Biofuel UCF Spinout of chemistry and forensic science at UCF. Qun Huo A University of Central Florida chemistry professor's low

  20. Structure and magnetic properties of RE{sub 2}CuIn{sub 3} (RE=Ce, Pr, Nd, Sm and Gd)

    SciTech Connect (OSTI)

    Tyvanchuk, Yuriy B. Szytula, Andrzej; Zarzycki, Arkadiusz; Rodewald, Ute Ch.; Kalychak, Yaroslav M.; Poettgen, Rainer

    2008-12-15

    The ternary copper indides RE{sub 2}CuIn{sub 3}{identical_to}RECu{sub 0.5}In{sub 1.5} (RE=Ce, Pr, Nd, Sm and Gd) were synthesized from the elements in sealed tantalum tubes in an induction furnace. They crystallize with the CaIn{sub 2}-type structure, space group P6{sub 3}/mmc, with a statistical occupancy of copper and indium on the tetrahedral substructure. These indides show homogeneity ranges RECu{sub x}In{sub 2-x}. Single crystal structure refinements were performed for five crystals: CeCu{sub 0.66}In{sub 1.34} (a=479.90(7) pm, c=768.12(15) pm), PrCu{sub 0.52}In{sub 1.48} (a=480.23(7) pm, c=759.23(15) pm), NdCu{sub 0.53}In{sub 1.47} (a=477.51(7) pm, c=756.37(15) pm), SmCu{sub 0.46}In{sub 1.54} (a=475.31(7) pm, c=744.77(15) pm), and GdCu{sub 0.33}In{sub 1.67} (a=474.19(7), c=737.67(15) pm). Temperature-dependent susceptibility measurements show antiferromagnetic ordering at T{sub N}=4.7 K for Pr{sub 2}CuIn{sub 3} and Nd{sub 2}CuIn{sub 3} and 15 K for Sm{sub 2}CuIn{sub 3}. Fitting of the susceptibility data of the samarium compound revealed an energy gap {delta}E=39.7(7) K between the ground and the first excited levels. - Graphical abstract: The CaIn{sub 2}-type structure of Sm{sub 2}CuIn{sub 3}.

  1. R{sub 4}Ir{sub 13}Ge{sub 9} (R=La, Ce, Pr, Nd, Sm) and RIr{sub 3}Ge{sub 2} (R=La, Ce, Pr, Nd): Crystal structures with nets of Ir atoms

    SciTech Connect (OSTI)

    Yarema, Maksym [Department of Inorganic Chemistry, Ivan Franko National University of Lviv, Kyryla i Mefodiya Str, 6, UA-79005 Lviv (Ukraine) [Department of Inorganic Chemistry, Ivan Franko National University of Lviv, Kyryla i Mefodiya Str, 6, UA-79005 Lviv (Ukraine); Swiss Federal Laboratories for Materials Science and Technology (EMPA), Ueberlandstr. 129, CH-8600 Duebendorf (Switzerland); Zaremba, Oksana; Gladyshevskii, Roman [Department of Inorganic Chemistry, Ivan Franko National University of Lviv, Kyryla i Mefodiya Str, 6, UA-79005 Lviv (Ukraine)] [Department of Inorganic Chemistry, Ivan Franko National University of Lviv, Kyryla i Mefodiya Str, 6, UA-79005 Lviv (Ukraine); Hlukhyy, Viktor, E-mail: viktor.hlukhyy@lrz.tu-muenchen.de [Department Chemie, Technische Universitaet Muenchen, Lichtenbergstr. 4, D-85747 Garching (Germany)] [Department Chemie, Technische Universitaet Muenchen, Lichtenbergstr. 4, D-85747 Garching (Germany); Faessler, Thomas F. [Department Chemie, Technische Universitaet Muenchen, Lichtenbergstr. 4, D-85747 Garching (Germany)] [Department Chemie, Technische Universitaet Muenchen, Lichtenbergstr. 4, D-85747 Garching (Germany)

    2012-12-15

    The crystal structures of the new ternary compounds Sm{sub 4}Ir{sub 13}Ge{sub 9} and LaIr{sub 3}Ge{sub 2} were determined and refined on the basis of single-crystal X-ray diffraction data. They belong to the Ho{sub 4}Ir{sub 13}Ge{sub 9} (oP52, Pmmn) and CeCo{sub 3}B{sub 2} (hP5, P6/mmm) structure types, respectively. The formation of isotypic compounds R{sub 4}Ir{sub 13}Ge{sub 9} with R=La, Ce, Pr, Nd, and RIr{sub 3}Ge{sub 2} with R=Ce, Pr, Nd, was established by powder X-ray diffraction. The RIr{sub 3}Ge{sub 2} (R=La, Ce, Pr, Nd) compounds exist only in as-cast samples and decompose during annealing at 800 Degree-Sign C with the formation of R{sub 4}Ir{sub 13}Ge{sub 9}. The structure of Sm{sub 4}Ir{sub 13}Ge{sub 9} contains intersecting, slightly puckered nets of Ir atoms (4{sup 4})(4{sup 3}.6){sub 2}(4.6{sup 2}){sub 2} and (4{sup 4}){sub 2}(4{sup 3}.6){sub 4}(4.6{sup 2}){sub 2} that are perpendicular to [0 1 1] as well as to [0 -1 1] and [0 0 1]. The Ir atoms are surrounded by Ge atoms that form tetrahedra or square pyramids (where the layers intersect). The Sm and additional Ir atoms (in trigonal-planar coordination) are situated in channels along [1 0 0] (short translation vector). In the structure of LaIr{sub 3}Ge{sub 2} the Ir atoms form planar Kagome nets (3.6.3.6) perpendicular to [0 0 1]. These nets alternate along the short translation vector with layers of La and Ge atoms. - Graphical abstract: The crystal structures contain the nets of Ir atoms as main structural motif: R{sub 4}Ir{sub 13}Ge{sub 9} contains intersecting slightly puckered nets of Ir atoms, whereas in the structure of RIr{sub 3}Ge{sub 2} the Ir atoms form planar Kagome nets. Highlights: Black-Right-Pointing-Pointer The Ir-rich ternary germanides R{sub 4}Ir{sub 13}Ge{sub 9} (R=La, Ce, Pr, Nd, Sm) and RIr{sub 3}Ge{sub 2} (R=La, Ce, Pr, Nd) have been synthesized. Black-Right-Pointing-Pointer The RIr{sub 3}Ge{sub 2} compounds exist only in as-cast samples and decompose during annealing at 800 Degree-Sign C with the formation of R{sub 4}Ir{sub 13}Ge{sub 9}. Black-Right-Pointing-Pointer The structure of R{sub 4}Ir{sub 13}Ge{sub 9} contains intersecting slightly puckered nets of Ir atoms. Black-Right-Pointing-Pointer In the structure of RIr{sub 3}Ge{sub 2} the Ir atoms form planar Kagome nets.

  2. Resolution of the discrepancy between the variation of the physical properties of Ce1-xYbxCoIn5 single crystals and thin films with Yb composition

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

    Jang, S.; White, B. D.; Lum, I. K.; Kim, H.; Tanatar, M. A.; Straszheim, W. E.; Prozorov, R.; Keiber, T.; Bridges, F.; Shu, L.; et al

    2014-11-18

    The extraordinary electronic phenomena including an Yb valence transition, a change in Fermi surface topology, and suppression of the heavy fermion quantum critical field at a nominal concentration 0.2 have been found in the system. These phenomena have no discernable effect on the unconventional superconductivity and normal-state non-Fermi liquid behaviour that occur over a broad range of up to 0.8. However, the variation of the coherence temperature and the superconducting critical temperature with nominal Yb concentration for bulk single crystals is much weaker than that of thin films. To determine whether differences in the actual Yb concentration of bulk singlemore »crystals and thin film samples might be responsible for these discrepancies, we employed Vegard’s law and the spectroscopically determined values of the valences of Ce and Yb as a function of to determine the actual composition of bulk single crystals. This analysis is supported by energy-dispersive X-ray spectroscopy, wavelength-dispersive X-ray spectroscopy, and transmission X-ray absorption edge spectroscopy measurements. The actual composition is found to be about one-third of the nominal concentration up to 0.5, and resolves the discrepancy between the variation of the physical properties of single crystals and thin films with Yb concentration.« less

  3. Uninterruptible Power Supplies Designed to meet or exceed the safety standards established by UL, CSA, CE and VDE. The Alpha CFR UPS is one of the safest, most reliable and versatile Uninterruptible Power Systems

    E-Print Network [OSTI]

    Berns, Hans-Gerd

    Uninterruptible Power Supplies Designed to meet or exceed the safety standards established by ULKVA available. Uninterruptible Power Supply > The CFR's microprocessor design provides efficiency, CSA, CE and VDE. The Alpha CFR UPS is one of the safest, most reliable and versatile Uninterruptible

  4. JOURNAL DE PHYSIQUE Colloque C6, supplkment au no8, Tome 39, aotit 1978, page C6-781 PARAMAGNETIC SUSCEPTIBILITY OF UPt AND CePt

    E-Print Network [OSTI]

    Boyer, Edmond

    . While U and Ce both even superconduct in elemental form (under pressure) ; they can, too, support in an inert atmosphere. The UPt data were taken in a superconducting susceptometer with a measuring field

  5. Interpretation of In-Situ Tests (P.W. Mayne, October 2002, Georgia Tech: www.ce.gatech.edu/~geosys) FLOW PROPERTIES from PIEZOCONE DISSIPATION TESTS

    E-Print Network [OSTI]

    Mayne, Paul W.

    .ce.gatech.edu/~geosys) FLOW PROPERTIES from PIEZOCONE DISSIPATION TESTS Soils exhibit flow properties that control hydraulic, fat plastic clays may require 2 to 3 days for complete equalization. Representative dissipation curves

  6. On phase equilibria and crystal structures in the systems Ce-Pd-B and Yb-Pd-B. Physical properties of R{sub 2}Pd{sub 13.6}B{sub 5} (R=Yb, Lu)

    SciTech Connect (OSTI)

    Sologub, Oksana [Institute of Physical Chemistry, University of Vienna, A-1090 Wien, Waehringerstrasse 42 (Austria); Rogl, Peter, E-mail: peter.franz.rogl@univie.ac.a [Institute of Physical Chemistry, University of Vienna, A-1090 Wien, Waehringerstrasse 42 (Austria); Salamakha, Leonid; Bauer, Ernst; Hilscher, Gerfried; Michor, Herwig [Institute of Solid State Physics, Vienna University of Technology, A-1040 Wien (Austria); Giester, Gerald [Institute of Mineralogy and Crystallography, University of Vienna, Althanstr. 14, A-1090 Wien (Austria)

    2010-05-15

    Phase equilibria and crystal structures of ternary compounds were determined in the systems Ce-Pd-B and Yb-Pd-B at 850 deg. C in the concentration ranges up to 45 and 33 at% of Ce and Yb, respectively, employing X-ray single crystal and powder diffraction. Phase relations in the Ce-Pd-B system at 850 deg. C are governed by formation of extended homogeneity fields, tau{sub 2}-CePd{sub 8}B{sub 2-x} (0.10Ce{sub 3}Pd{sub 25-x}B{sub 8-y} (1.06CePd{sub 3}B{sub x} (0CePd{sub 3}. Crystallographic parameters for the new structure type tau{sub 2}-CePd{sub 8}B{sub 2-x} (space group C2/c, a=1.78104(4) nm, b=1.03723(3) nm, c=1.16314(3), beta=118.515(1){sup o} for x=0.46) were established from X-ray single crystal diffraction. The crystal structures of tau{sub 2}-CePd{sub 8}B{sub 2-x} and tau{sub 3}-Ce{sub 3}Pd{sub 25-x}B{sub 3-y} are connected in a crystallographic group-subgroup relationship. Due to the lack of suitable single crystals, the novel structure of tau{sub 1}-Ce{sub 6}Pd{sub 47-x}B{sub 6} (x=0.2, C2/m space group, a=1.03594(2) nm, b=1.80782(3) nm, c=1.01997(2) nm, beta=108.321(1){sup o}) was determined from Rietveld refinement of X-ray powder diffraction data applying the structural model obtained from single crystals of homologous La{sub 6}Pd{sub 47-x}B{sub 6} (x=0.19) (X-ray single crystal diffraction, new structure type, space group C2/m, a=1.03988(2) nm, b=1.81941(5) nm, c=1.02418(2) nm, beta=108.168(1){sup o}). The Yb-Pd-B system is characterized by one ternary compound, tau{sub 1}-Yb{sub 2}Pd{sub 14}B{sub 5}, forming equilibria with extended solution YbPd{sub 3}B{sub x}, YbB{sub 6}, Pd{sub 5}B{sub 2} and Pd{sub 3}B. The crystal structures of both Yb{sub 2}Pd{sub 14}B{sub 5} and isotypic Lu{sub 2}Pd{sub 14}B{sub 5} were determined from X-ray Rietveld refinements and found to be closely related to the Y{sub 2}Pd{sub 14}B{sub 5}-type (I4{sub 1}/amd). The crystal structure of binary Yb{sub 5}Pd{sub 2-x} (Mn{sub 5}C{sub 2}-type) was confirmed from X-ray single crystal data and a slight defect on the Pd site (x=0.06) was established. The three structures tau{sub 1}-Ce{sub 6}Pd{sub 47-x}B{sub 6}, tau{sub 2}-CePd{sub 8}B{sub 2-x} and tau{sub 3}-Ce{sub 3}Pd{sub 25-x}B{sub 8-y} are related and can be considered as the packings of fragments observed in Nd{sub 2}Fe{sub 14}B structure with different stacking of common structural blocks. Physical properties for Yb{sub 2}Pd{sub 13.6}B{sub 5} (temperature dependent specific heat, electrical resistivity and magnetization) yielded a predominantly Yb-4f{sup 13} electronic configuration, presumably related with a magnetic instability below 2 K. Kondo interaction and crystalline electric field effects control the paramagnetic temperature domain. - Graphical Abstract: Crystal structure of CePd{sub 8}B{sub 2-x}.

  7. An In-Situ XAS Study of the Structural Changes in a CuO-CeO2/Al2O3 Catalyst during Total Oxidation of Propane

    SciTech Connect (OSTI)

    Silversmith, Geert; Poelman, Hilde; Poelman, Dirk; Gryse, Roger de; Olea, Maria; Balcaen, Veerle; Heynderickx, Philippe; Marin, Guy B.

    2007-02-02

    A CuOx-CeOx/Al2O3 catalyst was studied with in-situ transmission Cu K XAS for the total oxidation of propane as model reaction for the catalytic elimination of volatile organic compounds. The local Cu structure was determined for the catalyst as such, after pre-oxidation and after reduction with propane. The catalyst as such has a local CuO structure. No structural effect was observed upon heating in He up to 600 deg. C or after pre-oxidation at 150 deg. C. A full reduction of the Cu2+ towards metallic Cu0 occurred, when propane was fed to the catalyst. The change in local Cu structure during propane reduction was followed with a time resolution of 1 min. The {chi}(k) scans appeared as linear combinations of start and end spectra, CuO and Cu structure, respectively. However, careful examination of the XANES edge spectra indicates the presence of a small amount of additional Cu1+ species.

  8. Performance of Ni-Fe/gadolinium-doped CeO{sub2} anode supported tubular solid oxide fuel cells using steam reforming of methane

    SciTech Connect (OSTI)

    Liang, B.; Suzuki, T.; Hamamoto, K.; Yamaguchi, T.; Sumi, H.; Fujishiro, Y.; Ingram, B. J.; Carter, J. D.

    2012-03-15

    Iron nanoparticles (Fe{sub 2}O{sub 3}) were added to NiO/gadolinium-doped CeO{sub 2} (GDC) anode supported solid oxide fuel cell (SOFC) for the direct methane-water fuel operation. The cell was co-sintered at 1400 C, and the anode porosity is 31.8%. The main size corresponding to peak volume is around 1.5 {mu}m. When steam and methane directly fed to the cell, the power density is about 0.57 W cm{sup -2} at 650 C. It is the familiar performance for H{sub 2} operation (4 times of flow rate) with same fuel utilization. Compare with the testing temperature of 600 and 650 C, there is almost no carbon fiber deposition at 700 C with steam/methane (S/C) of 5. At the same time, fuel operation of high value of S/C (=3.3) resulted in fiber-like deposition and degradation of power performance based on loading test results.

  9. Effect of 8 MeV electron beam irradiation on the structural and optical properties of CeO{sub 2} nanoparticles

    SciTech Connect (OSTI)

    Babitha, K.K.; Priyanka, K.P.; Sreedevi, A.; Ganesh, S.; Varghese, Thomas

    2014-12-15

    The effect of 8 MeV electron beam irradiation on the structural and optical properties of cerium oxide nanoparticles was investigated. Ceria nanoparticles were synthesized by chemical precipitation method, and characterized by X-ray diffraction, transmission electron microscopy, ultraviolet–visible, photoluminescence and Raman spectroscopy. Ultraviolet–visible absorption spectra, photoluminescence and Raman spectra of beam irradiated samples were modified, and shifted to blue region, which were attributed to quantum size effect. Systematic observations found that nonstoichiometry, defects and size reduction caused by beam irradiation have great influence on optical band gap, blue shift, photoluminescence and Raman band modifications. Moreover, electron beam irradiation is a suitable technique to enhance the structural and optical properties of nanoceria by controlling the particle size, which may lead to potentially useful technological applications. - Highlights: • Investigated effect of beam irradiation on CeO{sub 2} nanoparticles • Beam irradiation caused size reduction and surface modification. • It increases microstrain, decreases d-spacing and broadens XRD peaks. • It also modifies optical band gap, absorption, PL and Raman bands.

  10. In-situ and theoretical studies for the dissociation of water on an active Ni/CeO? catalyst: Importance of strong metal-support interactions for the cleavage of O-H bonds

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

    Carrasco, Javier; Rodriguez, Jose A.; Lopez-Duran, David; Liu, Zongyuan; Duchon, Tomas; Evans, Jaime; Senanayake, Sanjaya D.; Crumlin, Ethan J.; Matolin, Vladimir; Ganduglia-Pirovano, M. Veronica

    2015-03-23

    Water dissociation is crucial in many catalytic reactions on oxide-supported transition-metal catalysts. Here, supported by experimental and density-functional theory results, we elucidate the effect of the support on O-H bond cleavage activity for nickel/ceria systems. Ambient-pressure O1s photoemission spectra at low Ni loadings on CeO?(111) reveal a substantially larger amount of OH groups as compared to the bare support. Our computed activation energy barriers for water dissociation show an enhanced reactivity of Ni adatoms on CeO?(111) compared with pyramidal Ni? particles with one Ni atom not in contact with the support, and extended Ni(111) surfaces. At the origin of thismore »support effect is the ability of ceria to stabilize oxidized Ni²? species by accommodating electrons in localized f-states. The fast dissociation of water on Ni/CeO? has a dramatic effect on the activity and stability of this system as a catalyst for the water-gas shift and ethanol steam reforming reactions.« less

  11. In-situ and theoretical studies for the dissociation of water on an active Ni/CeO? catalyst: Importance of strong metal-support interactions for the cleavage of O-H bonds

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

    Carrasco, Javier [Inst. de Catalisis y Petroleoquimica, CSIC, Madrid (Spain); CIC Energigune, Minana, Alava (Spain); Rodriguez, Jose A. [Brookhaven National Lab. (BNL), Upton, NY (United States); Stony Brook Univ., NY (United States); Lopez-Duran, David [Inst. de Catalisis y Petroleoquimica, CSIC, Madrid (Spain); CIC Energigune, Minana, Alava (Spain); Liu, Zongyuan [Brookhaven National Lab. (BNL), Upton, NY (United States); Stony Brook Univ., NY (United States); Duchon, Tomas [Charles Univ., Praha (Czech Republic); Evans, Jaime [Univ. Central de Venezuela, Caracas (Venezuela); Senanayake, Sanjaya D. [Brookhaven National Lab. (BNL), Upton, NY (United States); Crumlin, Ethan J. [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Matolin, Vladimir [Charles Univ., Praha (Czech Republic); Ganduglia-Pirovano, M. Veronica [Inst. de Catalisis y Petroleoquimica, CSIC, Madrid (Spain)

    2015-03-23

    Water dissociation is crucial in many catalytic reactions on oxide-supported transition-metal catalysts. Here, supported by experimental and density-functional theory results, we elucidate the effect of the support on O-H bond cleavage activity for nickel/ceria systems. Ambient-pressure O1s photoemission spectra at low Ni loadings on CeO?(111) reveal a substantially larger amount of OH groups as compared to the bare support. Our computed activation energy barriers for water dissociation show an enhanced reactivity of Ni adatoms on CeO?(111) compared with pyramidal Ni? particles with one Ni atom not in contact with the support, and extended Ni(111) surfaces. At the origin of this support effect is the ability of ceria to stabilize oxidized Ni²? species by accommodating electrons in localized f-states. The fast dissociation of water on Ni/CeO? has a dramatic effect on the activity and stability of this system as a catalyst for the water-gas shift and ethanol steam reforming reactions.

  12. The San Francisco Consortium CT Host, CE Home

    E-Print Network [OSTI]

    Ovchinnikov, Sergei

    The San Francisco Consortium CT Host, CE Home me l r Student: Complete Sections 1 through 5. Print Campus Campus California College of Podiatric Medicine City College of San Francisco Cogswell College Golden Gate University Tuition Required Hastings College of the Law San Francisco State University

  13. Wet oxidation of phenol on Ce{sub 1{minus}x}Cu{sub x}O{sub 2{minus}{delta}} catalyst

    SciTech Connect (OSTI)

    Hocevar, S.; Batista, J. [National Inst. of Chemistry, Ljubljana (Slovenia). Lab. of Catalysis and Chemical Reaction Engineering] [National Inst. of Chemistry, Ljubljana (Slovenia). Lab. of Catalysis and Chemical Reaction Engineering; Levec, J. [National Inst. of Chemistry, Ljubljana (Slovenia). Lab. of Catalysis and Chemical Reaction Engineering] [National Inst. of Chemistry, Ljubljana (Slovenia). Lab. of Catalysis and Chemical Reaction Engineering; [Univ. of Ljubljana (Slovenia). Dept. of Chemical Engineering

    1999-05-15

    Ce{sub 1{minus}x}Cu{sub x}O{sub 2{minus}{delta}} catalysts with 0.05 < x < 0.20 for catalytic wet oxidation of phenol in aqueous solutions have been synthesized using the coprecipitation method. The three most important synthesis parameters, the concentration of the mixed metal salt solution, the rate of coprecipitant addition and the stirrer speed during coprecipitation, were optimized with central composite design using the catalytic activity as a response function. The catalytic activity strongly depends on stirrer speed during coprecipitation. A high mutual dispersion of copper oxide and ceria, having the average crystallite size of about 9 nm, enhances solid solution formation. The unit cell parameter of ceria decreases when the overall concentration of copper in the catalyst increases, most probably obeying Vegard`s law. The catalysts proved to be very stable in hydrothermal reaction conditions at low pH values. After 5 h of reaction in the semibatch CST reactor less than 100 ppm of Cu was leached out of catalyst samples that were calcined in a flow of air for 2 h above 1033 K, and only a very low quantity of carbonaceous deposits were formed on the surface of the catalysts (0.6 wt%). The kinetics of phenol degradation could be interpreted by an equation valid for homogeneous autocatalytic reactions, in which the rate constant depends linearly on the heterogeneous catalyst (Cu) concentrations. This demonstrates that the reaction proceeds through a heterogeneous-homogeneous radical-branched chain mechanism.

  14. In this Issue CeBiTec Symposium: Molecular Biotechnology

    E-Print Network [OSTI]

    Moeller, Ralf

    of tools and techniques for transcriptome sequencing 3rd CeBiTec Students Academy Synthetic Biology and Bielefeld presented insights into cutting edge developments of Molecular Biotechnology. This regional focus compounds to biological halogenation, enzyme coatings and chemical protein labelling. One session

  15. Improvement of {gamma}-ray energy resolution of LaBr{sub 3}:Ce{sup 3+} scintillation detectors by Sr{sup 2+} and Ca{sup 2+} co-doping

    SciTech Connect (OSTI)

    Alekhin, M. S.; Haas, J. T. M. de; Khodyuk, I. V.; Dorenbos, P.; Kraemer, K. W.; Menge, P. R.; Ouspenski, V.

    2013-04-22

    Commercially available LaBr{sub 3}:5% Ce{sup 3+} scintillators show with photomultiplier tube readout about 2.7% energy resolution for the detection of 662 keV {gamma}-rays. Here we will show that by co-doping LaBr{sub 3}:Ce{sup 3+} with Sr{sup 2+} or Ca{sup 2+} the resolution is improved to 2.0%. Such an improvement is attributed to a strong reduction of the scintillation light losses that are due to radiationless recombination of free electrons and holes during the earliest stages (1-10 ps) inside the high free charge carrier density parts of the ionization track.

  16. Journal of Solid State Chemistry 177 (2004) 39954000 Microwave dielectric properties of BaO2CeO2nTiO2 ceramics

    E-Print Network [OSTI]

    Osnabrück, Universität

    2004-01-01

    ÀnTiO2 ceramics H. Sreemoolanadhana,1 , M.T. Sebastiana,Ã, R. Ratheeshb,2 , R. Blachnikb , M. Woehleckec , B. Schneiderc , M. Neumannc , P. Mohanand a Regional Research Laboratory, Ceramic Technology online 6 October 2004 Abstract The BaO­2CeO2­nTiO2 ceramics with n ¼ 3; 4 and 5 have been prepared

  17. Lu.sub.1-xI.sub.3:Ce.sub.x-a scintillator for gamma-ray spectroscopy and time-of-flight pet

    DOE Patents [OSTI]

    Shah, Kanai S. (Newton, MA)

    2008-02-12

    The present invention includes very fast scintillator materials including lutetium iodide doped with Cerium (Lu.sub.1-xI.sub.3:Ce.sub.x; LuI.sub.3:Ce). The LuI.sub.3 scintillator material has surprisingly good characteristics including high light output, high gamma-ray stopping efficiency, fast response, low cost, good proportionality, and minimal afterglow that the material is useful for gamma-ray spectroscopy, medical imaging, nuclear and high energy physics research, diffraction, non-destructive testing, nuclear treaty verification and safeguards, and geological exploration.

  18. A Brief Review of Past INL Work Assessing Radionuclide Content in TMI-2 Melted Fuel Debris: The Use of 144Ce as a Surrogate for Pu Accountancy

    SciTech Connect (OSTI)

    D. L. Chichester; S. J. Thompson

    2013-09-01

    This report serves as a literature review of prior work performed at Idaho National Laboratory, and its predecessor organizations Idaho National Engineering Laboratory (INEL) and Idaho National Engineering and Environmental Laboratory (INEEL), studying radionuclide partitioning within the melted fuel debris of the reactor of the Three Mile Island 2 (TMI-2) nuclear power plant. The purpose of this review is to document prior published work that provides supporting evidence of the utility of using 144Ce as a surrogate for plutonium within melted fuel debris. When the TMI-2 accident occurred no quantitative nondestructive analysis (NDA) techniques existed that could assay plutonium in the unconventional wastes from the reactor. However, unpublished work performed at INL by D. W. Akers in the late 1980s through the 1990s demonstrated that passive gamma-ray spectrometry of 144Ce could potentially be used to develop a semi-quantitative correlation for estimating plutonium content in these materials. The fate and transport of radioisotopes in fuel from different regions of the core, including uranium, fission products, and actinides, appear to be well characterized based on the maximum temperature reached by fuel in different parts of the core and the melting point, boiling point, and volatility of those radioisotopes. Also, the chemical interactions between fuel, fuel cladding, control elements, and core structural components appears to have played a large role in determining when and how fuel relocation occurred in the core; perhaps the most important of these reaction appears to be related to the formation of mixed-material alloys, eutectics, in the fuel cladding. Because of its high melting point, low volatility, and similar chemical behavior to plutonium, the element cerium appears to have behaved similarly to plutonium during the evolution of the TMI-2 accident. Anecdotal evidence extrapolated from open-source literature strengthens this logical feasibility for using cerium, which is rather easy to analyze using passive nondestructive analysis gamma-ray spectrometry, as a surrogate for plutonium in the final analysis of TMI-2 melted fuel debris. The generation of this report is motivated by the need to perform nuclear material accountancy measurements on the melted fuel debris that will be excavated from the damaged nuclear reactors at the Fukushima Daiichi nuclear power plant in Japan, which were destroyed by the Tohoku earthquake and tsunami on March 11, 2011. Lessons may be taken from prior U.S. work related to the study of the TMI-2 core debris to support the development of new assay methods for use at Fukushima Daiichi. While significant differences exist between the two reactor systems (pressurized water reactor (TMI-2) versus boiling water reactor (FD), fresh water post-accident cooing (TMI-2) versus salt water (FD), maintained containment (TMI-2) versus loss of containment (FD)) there remain sufficient similarities to motivate these comparisons.

  19. Approved Module Information for CE4503, 2014/5 Module Title/Name: Advanced Process Design Module Code: CE4503

    E-Print Network [OSTI]

    Neirotti, Juan Pablo

    Code: CE4503 School: Engineering and Applied Science Module Type: Standard Module New Module? No Module available: BEng/MEng Chemical Engineering. Available to Exchange Students? Not Specified Module Dependancies. The Design Problem is intended to test the students ability to apply the principles of Chemical Engineering

  20. Approved Module Information for CE2105, 2014/5 Module Title/Name: Process Simulation Module Code: CE2105

    E-Print Network [OSTI]

    Neirotti, Juan Pablo

    : CE2105 School: Engineering and Applied Science Module Type: Standard Module New Module? No Module processes with solids * Coal drying * Coal combustion Module Delivery Methods of Delivery & Learning Hours weighting (including approaches to formative assessment as well as summative): Assessment Type Category

  1. Approved Module Information for CE3104, 2014/5 Module Title/Name: Process & Pollution Control Module Code: CE3104

    E-Print Network [OSTI]

    Neirotti, Juan Pablo

    , treatment principles, discharge to sewers and watercourses * Air Pollution - effects of pollutants, typesApproved Module Information for CE3104, 2014/5 Module Title/Name: Process & Pollution Control - Understand how a chemical process is controlled safely and efficiently Pollution Control #12;* The impact

  2. Crystal structure, magnetism and transport properties of Ce{sub 3}Ni{sub 25.75}Ru{sub 3.16}Al{sub 4.1}B{sub 10}

    SciTech Connect (OSTI)

    Janka, Oliver; Baumbach, Ryan E.; Thompson, Joe D.; Bauer, Eric D.; Kauzlarich, Susan M.

    2013-09-15

    Single crystals of Ce{sub 3}Ni{sub 25.75}Ru{sub 3.16}Al{sub 4.1}B{sub 10} were obtained from a process in which a polycrystalline sample of CeRu{sub 2}Al{sub 2}B was annealed in an excess of a Ni–In flux. The initial phase, CeRu{sub 2}Al{sub 2}B, does not recrystallize, instead, crystals of a new phase, Ce{sub 3}Ni{sub 25.75}Ru{sub 3.16}Al{sub 4.1}B{sub 10}, could be isolated once the flux was removed. The title compound crystallizes in the tetragonal space group P4/nmm (No. 129) with a=1139.02(8), c=801.68(6) pm (c/a=0.70) in the Nd{sub 3}Ni{sub 29}Si{sub 4}B{sub 10} structure type. Electrical resistivity measurements reveal metallic behavior with a minimum of 700 µ? cm and a small residual resistivity ratio of RRR=1.4 indicating a large amount of disorder scattering. The cerium atoms are either in the 4+ or an intermediate valence state with a valence fluctuation temperature far above room temperature. - Graphical abstract: Single crystals of Ce{sub 3}Ni{sub 25.75}Ru{sub 3.16}A{sub l4.1}B{sub 10} were obtained using a process in which a polycrystalline sample of CeRu{sub 2}Al{sub 2}B was annealed in an excess of a Ni–In flux. Electrical resistivity measurements reveal metallic behavior with a minimum of 700 ?? cm and a small residual resistivity ratio of RRR=1.4 indicating a large amount of disorder scattering. The cerium atoms are either in the 4+ or an intermediate valence state with a valence fluctuation temperature far above room temperature. Display Omitted - Highlights: • Flux synthesis of high quality single crystals of Ce{sub 3}Ni{sub 25.75}Ru{sub 3.16}Al{sub 4.1}B{sub 10} is presented along with the crystal structure, magnetic and transport properties. • The compound is isostructural to Nd{sub 3}Ni{sub 29}Si{sub 4}B{sub 10} but is first of this structure type showing mixed occupancies of d-elements. • This is an intermetallic phase with Ce in either the 4+ or an intermediate valence state. • The fact that this structure with mixed occupied transition metal sites exists suggests that more compounds of this type should be accessible and the physical properties tuned.

  3. SCINTILLATION PROPERTIES OF BaF2:Cd, BaF2, BaF2:Ce, BaF2:Sc, BaF2:Tm CRYSTALS AND CERAMICS; NEW PHOTOSENSORS FOR THE VACUUM ULTRAVIOLET REGION

    E-Print Network [OSTI]

    Titov, Anatoly

    SCINTILLATION PROPERTIES OF BaF2:Cd, BaF2, BaF2:Ce, BaF2:Sc, BaF2:Tm CRYSTALS AND CERAMICS; NEW crystals and ceramics doped with different elements in order to improve the light yield of the fast in the wavelength range from 190 to 600 nm. We used an improved method of ceramics production from the BaF2 powder

  4. Nonlinear chiral imaging of subwavelength-sized twisted-cross gold nanodimers [Invited

    E-Print Network [OSTI]

    Kauranen1 1 Department of Physics, Tampere University of Technology, FI-33101 Tampere, Finland 2 Institut

  5. Preparation and thermophysical properties of (Sm{sub 1?x}Er{sub x}){sub 2}Ce{sub 2}O{sub 7} oxides for thermal barrier coatings

    SciTech Connect (OSTI)

    Xiaoge, Chen; Shusen, Yang; Hongsong, Zhang; Gang, Li; Zhenjun, Li.; Bo, Ren; Xudan, Dang; Haoming, Zhang; An, Tang

    2014-03-01

    Graphical abstract: - Highlights: • These ceramic materials with fluorite structure were synthesized. • Defect points lead to their lower thermal conductivities. • The lower ionic radius of Er{sup 3+} ion leads to the reduction of thermal expansion coefficient of (Sm{sub 1?x}Er{sub x}){sub 2}Ce{sub 2}O{sub 7} oxides. - Abstract: (Sm{sub 1?x}Er{sub x}){sub 2}Ce{sub 2}O{sub 7} ceramics were synthesized by sol–gel method and sintered at 1600 °C for 10 h in air. The influence of Er{sub 2}O{sub 3}-substitution on the phase structure and thermophysical properties of Sm{sub 2}Ce{sub 2}O{sub 7} was investigated. The phase structures of these ceramics were identified by X-ray diffraction showing that all synthesized ceramics have fluorite-type structure. The measurements for thermophysical properties of these ceramics show that their thermal conductivities and thermal expansion coefficients remarkably decreased through Er-substitution. However, the thermal expansion coefficients were higher than that of YSZ and their thermal conductivities were much lower than that of 8YSZ. The excellent thermophysical property implies that these solid solutions are potential materials for the ceramics layer in thermal barrier coatings.

  6. Fergusonite-type CeNbO{sub 4+?}: Single crystal growth, symmetry revision and conductivity

    SciTech Connect (OSTI)

    Bayliss, Ryan D. [Department of Materials, Imperial College London, Prince Consort Road, London, SW7 2BP (United Kingdom); Pramana, Stevin S.; An, Tao; Wei, Fengxia; Kloc, Christian L. [School of Materials Science and Engineering, 50 Nanyang Avenue, Nanyang Technological University, 639798 (Singapore); White, Andrew J.P. [Chemical Crystallography Laboratory, Department of Chemistry, Imperial College London, Exhibition Road, London, SW7 2AZ (United Kingdom); Skinner, Stephen J. [Department of Materials, Imperial College London, Prince Consort Road, London, SW7 2BP (United Kingdom); White, Timothy J. [School of Materials Science and Engineering, 50 Nanyang Avenue, Nanyang Technological University, 639798 (Singapore); Baikie, Tom, E-mail: tbaikie@ntu.edu.sg [School of Materials Science and Engineering, 50 Nanyang Avenue, Nanyang Technological University, 639798 (Singapore)

    2013-08-15

    Large fergusonite-type (ABO{sub 4}, A=Ce, B=Nb) oxide crystals, a prototype electrolyte composition for solid oxide fuel cells (SOFC), were prepared for the first time in a floating zone mirror furnace under air or argon atmospheres. While CeNbO{sub 4} grown in air contained CeNbO{sub 4.08} as a minor impurity that compromised structural analysis, the argon atmosphere yielded a single phase crystal of monoclinic CeNbO{sub 4}, as confirmed by selected area electron diffraction, powder and single crystal X-ray diffraction. The structure was determined in the standard space group setting C12/c1 (No. 15), rather than the commonly adopted I12/a1. AC impedance spectroscopy conducted under argon found that stoichiometric CeNbO{sub 4} single crystals showed lower conductivity compared to CeNbO{sub 4+?} confirming interstitial oxygen can penetrate through fergusonite and is responsible for the higher conductivity associated with these oxides. - Graphical abstract: Large fergusonite-type CeNbO{sub 4} crystals were prepared for the first time in a floating zone mirror furnace. Crystal growth in an argon atmosphere yielded a single phase monoclinic CeNbO4, as confirmed by selected area electron diffraction, powder and single crystal X-ray diffraction. The structure was determined in the standard space group setting C12/c1 (No. 15), rather than the commonly adopted I12/a1. AC impedance spectroscopy found CeNbO{sub 4} single crystals showed lower conductivity compared to CeNbO{sub 4+?} confirming interstitial oxygen can penetrate through fergusonite and is responsible for the higher conductivity associated with these oxides. Highlights: • Preparation of single crystals of CeNbO{sub 4} using a floating zone mirror furnace. • Correction to the crystal symmetry of the monoclinic form of CeNbO{sub 4}. • Report the conductivity of a single crystal of CeNbO{sub 4}.

  7. UFe/sub 4/P/sub 12/ and CeFe/sub 4/P/sub 12/: non-metallic isotypes of superconducting LaFe/sub 4/P/sub 12/

    SciTech Connect (OSTI)

    Meisner, G.P.; Torikachvili, M.S.; Yang, K.N.; Maple, M.B.; Guertin, R.P.

    1984-01-01

    The new compound UFe/sub 4/P/sub 12/, which was found to be isostructural to superconducting LaFe/sub 4/P/sub 12/ and with a lattive constant of 7.7729 A, is a semiconductor and shows ferromagnetic order below 3.15 K. CeFe/sub 4/P/sub 12/ is also a semiconductor and its magnetic susceptibility is unusually small in comparison to LaFe/sub 4/P/sub 12/. The semiconducting behaviors of both UFe/sub 4/P/sub 12/ and CeFe/sub 4/P/sub 12/ seem anomalous and may arise from strong f-electron hybridization.

  8. UFe/sub 4/P/sub 12/ and CeFe/sub 4/P/sub 12/: Nonmetallic isotypes of superconducting LaFe/sub 4/P/sub 12/

    SciTech Connect (OSTI)

    Meisner, G.P.; Torikachvili, M.S.; Yang, K.N.; Maple, M.B.; Guertin, R.P.

    1985-04-15

    The new compound UFe/sub 4/P/sub 12/, which was found to be isostructural to superconducting LaFe/sub 4/P/sub 12/ and have a lattice constant of 7.7729 A, is a semiconductor and shows ferromagnetic order below 3.15 K. CeFe/sub 4/P/sub 12/ is also a semiconductor, and its magnetic susceptibility is unusually small in comparison to LaFe/sub 4/P/sub 12/. The semiconducting behaviors of both UFe/sub 4/P/sub 12/ and CeFe/sub 4/P/sub 12/ seem anomalous and may arise from strong f-electron hybridization.

  9. This article has been accepted for inclusion in a future issue of this journal. Content is final as presented, with the exception of pagination. IEEE TRANSACTIONS ON AUTOMATION SCIENCE AND ENGINEERING 1

    E-Print Network [OSTI]

    Tentzeris, Manos

    . Ukkonen, and L. Sydänheimo are with the Depart- ment of Electronics, Tampere University of Technology, FI

  10. Studies on Ca2+-Doped CeBr3 Scintillating Materials

    SciTech Connect (OSTI)

    Guss, P. [NSTec; Foster, M. E. [SNL; Wong, B. M. [SNL; Doty, F. P. [SNL; Shah, K. [RMD; Squillante, M. [RMD; Glodo, J. [RMD; Yuan, D. [NSTec

    2013-07-03

    Despite the outstanding scintillation performance characteristics of cerium tribromide (CeBr3) and cerium-activated lanthanum tribromide (LaBr3:Ce), their commercial availability and application is limited due to the difficulties of growing large, crack-free single crystals from these fragile materials. The objective of this investigation was to employ aliovalent doping to increase crystal strength while maintaining the optical properties of the crystal. One divalent dopant (Ca2+) was investigated as a dopant to strengthen CeBr3 without negatively impacting scintillation performance. Ingots containing nominal concentrations of 1.9% of the Ca2+ dopant were grown. Preliminary scintillation measurements are presented for this aliovalently doped scintillator. Ca2+-doped CeBr3 exhibited little or no change in the peak fluorescence emission for 371 nm optical excitation for CeBr3. The structural, electronic, and optical properties of CeBr3 crystals were investigated using the density functional theory within generalized gradient approximation. The calculated lattice parameters are in good agreement with the experimental data. The energy band structures and density of states were obtained. The optical properties of CeBr3, including the dielectric function, were calculated.

  11. ZIMO: Building Cross-Technology MIMO to Harmonize ZigBee Smog with WiFi Flash without Intervention

    E-Print Network [OSTI]

    Li, Xiang-Yang

    ZIMO: Building Cross-Technology MIMO to Harmonize ZigBee Smog with WiFi Flash without Intervention a ma- jor problem for low power urban sensing technology ZigBee networks. Existing approaches for dealing with such inter- ferences often modify either the ZigBee nodes or WiFi nodes. However, massive

  12. Interconnecting WiFi Devices with IEEE 802.15.4 Devices without Using a Gateway

    E-Print Network [OSTI]

    Gnawali, Omprakash

    to bridge between the low power IEEE 802.15.4 network and the Internet. The bridge has at least two at a smart home, the user may use a smartphone and send command over WiFi to the gateway, often through smart home automation applications are non-interactive. Yet, they require Internet access either

  13. WizSync: Exploiting Wi-Fi Infrastructure for Clock Synchronization in Wireless Sensor Networks

    E-Print Network [OSTI]

    Xing, Guoliang

    synchronization approach by exploiting the existing Wi-Fi infrastructure. Our approach leverages the fact that ZigBee unlicensed spectrum. As a result, a ZigBee node can detect and synchronize to the periodic beacons standards such as Bluetooth and 802.15.4/ZigBee, which also adopt the 2.4 GHz unlicensed spectrum

  14. FI 10 19 dcembre 2006 page Alan Turing se fraye un chemin jusqu'

    E-Print Network [OSTI]

    Teuscher, Christof

    FI 10 ­ 19 décembre 2006 ­ page Alan Turing se fraye un chemin jusqu'à la place de lPiccard,cheminJeanTschumi,avenueForel,rue RobertMercier,chemin, place ou rueAlanTuring. EtquefaisaitAlanTuringcheminfaisant?Leplus souvent,craqueurducodesecretdela machineEnigma?Certesexagéré,maisle succèsaplusieursparentsetAlanTuring estaumoinslegrandpèreoul

  15. RuralNet (Digital Gangetic Plains): WiFi-Based Low-Cost Rural

    E-Print Network [OSTI]

    Raman, Bhaskaran

    RuralNet (Digital Gangetic Plains): WiFi-Based Low-Cost Rural Networking Bhaskaran Raman Department in the west This business model can thrive when average per capita income is high ($20K) Wireless systems being deployed in India are successful in Metro pockets, but providing cost effective voice and data

  16. Saving Energy on WiFi With Required IPsec Youngsang Shin, Steven Myers, and Minaxi Gupta

    E-Print Network [OSTI]

    Gupta, Minaxi

    Saving Energy on WiFi With Required IPsec Youngsang Shin, Steven Myers, and Minaxi Gupta School a transitory network connection due to mobility or energy-saving protocols. In this work we study the ability savings. Energy savings come from power-cycling the wireless radio when it is not in use. More

  17. Magnetic Hardening of CeFe11Ti and the Effect of TiC Addition (Journal

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfate Reducing(Journalspectroscopy ofArticle)SciTech Connect Conference:National CompactArticle) |

  18. In Search of Cyclohexane-like Sn6 12-: Synthesis of Li2Ln5Sn7 (Ln ) Ce,

    E-Print Network [OSTI]

    such as the alkali, alkaline-earth, and rare-earth elements with less electropos- itive metals or semimetals state for the rare-earth cations and, therefore, 17 available electrons from the cations per formula), alkaline-earth (Ae) or lanthanide metal (Ln), and Sn.2 Most of the structures in this system are directly

  19. Determination of the Surface Structure of CeO2(111) by Low-Energy Electron

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfate Reducing BacteriaConnectlaser-solid interactionCrystalDesigning(JournalProblems

  20. The Multi-source National Forest Inventory of Finland methods and results 2009

    E-Print Network [OSTI]

    Tomppo, Erkki

    The Multi-source National Forest Inventory of Finland ­ methods and results 2009 Erkki Tomppo://www.metla.fi/julkaisut/workingpapers/ ISSN 1795-150X Office Post Box 18 FI-01301 Vantaa, Finland tel. +358 29532 2111 e-mail julkaisutoimitus@metla.fi Publisher Finnish Forest Research Institute Post Box 18 FI-01301 Vantaa, Finland tel. +358 29532 2111 e

  1. Reply to "Comment on `Microwave vortex dissipation of superconducting Nd-Ce-Cu-O epitaxial films in high magnetic fields' "

    E-Print Network [OSTI]

    Yeh, Nai-Chang

    in high magnetic fields' " N.-C. Yeh1 and D. M. Strayer2 1Department of Physics, California Institute of Technology, Pasadena, California 91125, USA 2 Jet Propulsion Laboratory, California Institute of Technology of these modes are insensitive to the application of external magnetic fields, be- cause magnetic fields do

  2. GJI gji_4803 Dispatch: September 24, 2010 CE: XZZ Journal MSP No. No. of pages: 8 PE: JM

    E-Print Network [OSTI]

    Biggs, Juliet

    several others. The mine exploited a 2.4 m thick seam of bituminous coal in Cretaceous clastic sedimentary rocks at a depth of about 600 m. The mine was an underground `room and pillar' type, whereby pillars of coal are left to support the overlying strata during mining. At the time of the collapse, pillar

  3. TrtJllS4CliollS of Ihr AlIU1,ican FisMries Sociely 130:634-64.3. 2001 " Ccpyrighl by the American Fi.ltcriO$ Sociery 2001

    E-Print Network [OSTI]

    estimates in Keystone Reservoir. Oklahoma. were similar to those in other southern self-sustaining reservoir lentic populations and higher than that of lotic paddlefish collected in the Keystone Reservoir area before impoundment. Lentic populations. including that of Keystone Reservoir. had faster growth at age 0

  4. A Frailty Instrument for primary care for those aged 75 years or more: findings from the Survey of Health, Ageing and Retirement in Europe, a longitudinal population-based cohort study (SHARE-FI75+)

    E-Print Network [OSTI]

    Romero-Ortuno, Roman; Soraghan, Christopher

    2014-12-23

    ; (3) breathless- ness, difficulty breathing; (4) persistent cough; (5) swollen legs; (6) sleeping problems; (7) falling down; (8). fear of falling down; (9) dizziness, faints or black- outs; (10) stomach or intestine problems, including constipation...

  5. Surface and Interface Properties of 10–12 Unit Cells Thick Sputter Deposited Epitaxial CeO2Films

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

    Saraf, L. V.; Wang, C. M.; Engelhard, M. H.; Nachimuthu, P.

    2008-01-01

    Ultrathin and continuous epitaxial films with relaxed lattice strain can potentially maintain more of its bulk physical and chemical properties and are useful as buffer layers. We study surface, interface, and microstructural properties of ultrathin (?10–12 unit cells thick) epitaxial ceria films grown on single crystal YSZ substrates. The out-of -plane and in-plane lattice parameters indicate relaxation in the continuous film due to misfit dislocations seen by high-resolution transmission electron microscopy (HRTEM) and substrate roughness of?1-2 unit cells, confirmed by atomic force microscopy and HRTEM. A combination of secondary sputtering, lattice mismatch, substrate roughness, and surface reduction creating secondary phasemore »was likely the cause of surface roughness which should be reduced to a minimum level for effective use of it as buffer layers.« less

  6. Surface and Interface Properties of 10–12 Unit Cells Thick Sputter Deposited Epitaxial CeO 2 Films

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

    Saraf, L. V.; Wang, C. M.; Engelhard, M. H.; Nachimuthu, P.

    2008-01-01

    Ultrathin and continuous epitaxial films with relaxed lattice strain can potentially maintain more of its bulk physical and chemical properties and are useful as buffer layers. We study surface, interface, and microstructural properties of ultrathin ( ? 10–12 unit cells thick) epitaxial ceria films grown on single crystal YSZ substrates. The out-of -plane and in-plane lattice parameters indicate relaxation in the continuous film due to misfit dislocations seen by high-resolution transmission electron microscopy (HRTEM) and substrate roughness of ? 1-2 unit cells, confirmed by atomic force microscopy and HRTEM. A combination of secondary sputtering, latticemore »mismatch, substrate roughness, and surface reduction creating secondary phase was likely the cause of surface roughness which should be reduced to a minimum level for effective use of it as buffer layers. « less

  7. The Case for exCellenCe The University of Houston Law Center is a Tier One law school

    E-Print Network [OSTI]

    Glasser, Adrian

    of 200 law schools by U.S. News & World Report, 2011 · Ranked 42nd in 2011 by the National Law Journal. 56 out of 200 law schools in the nation by U.S. News & World Report, and one of only eight public law and Information Law Institute is ranked 6th nationally by U.S. News & World Report, 2011 · UH Health Law

  8. An Electron Microscopy Investigation of the Transient Stage Oxidation Products in an Fe-22Cr Alloy with Ce and La

    E-Print Network [OSTI]

    Laughlin, David E.

    as interconnector materials.[1] However, lowering of the operational temperature of SOFCs from approximately 1273 K; these properties make Fe-Cr alloys favorable candidates for interconnector materials.[1,3] Research has been. A major problem with metallic interconnectors based on Fe-Cr alloys, is their reactivity

  9. MECHANICAL PROPERTIES OF Sc???Ce????Zr????O? ELECTROLYTE MATERIAL FOR INTERMEDIATE TEMPERATURE SOLID OXIDE FUEL CELLS 

    E-Print Network [OSTI]

    Lim, Wendy

    2011-02-22

    ...................................................................................... 2 1.1.2 Cathode ........................................................................................... 3 1.1.3 Anode ............................................................................................. 3 1.1.4 Interconnect... of an anode and cathode separated by solid electrolyte. The oxygen molecules from the air enter a fuel cell at the cathode and separate into oxygen ions with the addition of four electrons. During operation, a solid electrolyte conducts oxygen ions from...

  10. Celebrating 150 Years of exCellenCe in eduCation, researCh, and innovation

    E-Print Network [OSTI]

    Bergman, Keren

    --transforming modern cities to smart cities, opening up communication channels that connect people in all pockets that illustrate the impact of the School in New York City, in the nation, and in the world. The achievements by bringing sanitation, medical care, and clean drinking water to New York City, ushering in the modern city

  11. University of Cl M i i l E Fi i

    E-Print Network [OSTI]

    Kammen, Daniel M.

    Propert Assessed Clean Energ )(PACE: Property Assessed Clean Energy) Daniel M KammenDaniel M. Kammen Opportunities 550 ppm CO2 450 ppm CO2pp 2 pp 2 Solar: dramatic recent cost announcements EE: financing to establish special assessment districts for solar-energy improvements Virginia ­ SB 1212 Financing clean

  12. CIVIL ENGINEERING CURRICULUM EFFECTIVE FALL 2015 CE 1105 ......................................................... 1 CE 1252 ........................................................ 2

    E-Print Network [OSTI]

    Huang, Haiying

    6/9/2015 CIVIL ENGINEERING CURRICULUM EFFECTIVE FALL 2015 FIRST YEAR CE 1105 ......................................................... 4 MATH 3319 ........................................................ 3 17 17 See "Civil Engineering school foreign language. REQUIRED COURSE TITLES COMMUNICATIONS CIVIL ENGINEERING (ABET Proficiency test

  13. A. G. Walton October 1999 Civil Engineering CE201 Mathematics

    E-Print Network [OSTI]

    Walton, Andrew G

    Civil Engineering CE201 Mathematics Lecturers: Andy Walton, David Denison, Roy Jacobs Timetable. Advanced Engineering Mathematics, E. Kreyszig.

  14. An Update on Improvements to NiCE Support for RELAP-7

    SciTech Connect (OSTI)

    McCaskey, Alex; Wojtowicz, Anna; Deyton, Jordan H.; Patterson, Taylor C.; Billings, Jay Jay

    2015-01-01

    The Multiphysics Object-Oriented Simulation Environment (MOOSE) is a framework that facilitates the development of applications that rely on finite-element analysis to solve a coupled, nonlinear system of partial differential equations. RELAP-7 represents an update to the venerable RELAP-5 simulator that is built upon this framework and attempts to model the balance-of-plant concerns in a full nuclear plant. This report details the continued support and integration of RELAP-7 and the NEAMS Integrated Computational Environment (NiCE). RELAP-7 is fully supported by the NiCE due to on-going work to tightly integrate NiCE with the MOOSE framework, and subsequently the applications built upon it. NiCE development throughout the first quarter of FY15 has focused on improvements, bug fixes, and feature additions to existing MOOSE-based application support. Specifically, this report will focus on improvements to the NiCE MOOSE Model Builder, the MOOSE application job launcher, and the 3D Nuclear Plant Viewer. This report also includes a comprehensive tutorial that guides RELAP-7 users through the basic NiCE workflow: from input generation and 3D Plant modeling, to massively parallel job launch and post-simulation data visualization.

  15. Crystal structures and luminescence properties of novel compounds K{sub 4}M{sub 2}[Al{sub 2}Si{sub 8}O{sub 24}] (M = Ce, Gd)

    SciTech Connect (OSTI)

    Aksenov, S. M., E-mail: aks.crys@gmail.com [Russian Academy of Sciences, Shubnikov Institute of Crystallography (Russian Federation); Rassulov, V. A. [Russian Academy of Sciences, Fedorovsky All-Russian Research Institute of Mineral Resources (Russian Federation)] [Russian Academy of Sciences, Fedorovsky All-Russian Research Institute of Mineral Resources (Russian Federation); Rastsvetaeva, R. K. [Russian Academy of Sciences, Shubnikov Institute of Crystallography (Russian Federation)] [Russian Academy of Sciences, Shubnikov Institute of Crystallography (Russian Federation); Taroev, V. K. [Russian Academy of Sciences, Institute of Geochemistry, Siberian Branch (Russian Federation)] [Russian Academy of Sciences, Institute of Geochemistry, Siberian Branch (Russian Federation)

    2013-11-15

    Two novel potassium rare earth silicates, obtained by hydrothermal synthesis, have been investigated by X-ray diffraction and described by the general formula K{sub 4}M{sub 2}[Al{sub 2}Si{sub 8}O{sub 24}] (M = Ce, Gd). The parameters of the monoclinic K{sub 4}Ce{sub 2}[Al{sub 2}Si{sub 8}O{sub 24}] and K{sub 4}Gd{sub 2}[Al{sub 2}Si{sub 8}O{sub 24}] cells are, respectively, as follows: a = 26.867(1), 26.6520(2) A; b = 7.4150(2), 7.2854(1) A; c = 14.910(1), 14.8182(1) A; {beta} = 123.52(1) Degree-Sign , 123.46(1) Degree-Sign ; and sp. gr. P2{sub 1}/n. The structures are solved by the charge flipping method and refined in the anisotropic approximation of thermal vibrations for atoms to R = 5.2 and 2.5%, respectively. The compounds under study are crystallized into a new structural type, which is based on two-level [Al{sub 2}Si{sub 8}O{sub 24}] layers, combined into a three-dimensional framework by columns of edge-sharing seven-vertex REE polyhedra. Potassium atoms are located in the framework channels. The spectral luminescence characteristics are determined. The luminescence bands are typical of Gd{sup 3+} and Ce{sup 3+} ions. Upon excitation by light with {lambda}{sub exc} = 246 nm, a band due to the {sup 2}D {yields} {sup 8}F{sub 5/2} transition with {lambda}{sub max} = 430 nm is observed in the spectrum of K{sub 4}Ce{sub 2}[Al{sub 2}Si{sub 8}O{sub 24}] and a band related to the {sup 6}P{sub 7/2} {yields} {sup 8}S{sub 7/2} transition with {lambda}{sub max} = 311 nm is observed in the spectrum of K{sub 4}Gd{sub 2}[Al{sub 2}Si{sub 8}O{sub 24}].

  16. Long-range ordering of reduced magnetic moments in the spin-gap compound CeOs{sub 2}Al{sub 10} as seen via muon spin relaxation and neutron scattering

    SciTech Connect (OSTI)

    Adroja, D. T.; Hillier, A. D.; Kockelmann, W. A.; Anand, V. K.; Stewart, J. R.; Taylor, J. [ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot Oxon OX11 0QX (United Kingdom); Deen, P. P. [Institute Laue-Langevin, BP 156, 6 Rue Jules Horowitz, 38042 Grenoble Cedex (France); Strydom, A. M. [Physics Department, University of Johannesburg, P.O. Box 524, Auckland Park 2006 (South Africa); Muro, Y.; Kajino, J.; Takabatake, T. [Department of Quantum Matter, ADSM, and IAMR, Hiroshima University, Higashi-Hiroshima 739-8530 (Japan)

    2010-09-01

    We have carried out neutron diffraction, muon spin relaxation ({mu}SR), and inelastic neutron scattering (INS) investigations on a polycrystalline sample of CeOs{sub 2}Al{sub 10} to investigate the nature of the phase transition observed near 29 K in the resistivity and heat capacity. Our {mu}SR data clearly reveal coherent frequency oscillations below 28 K, indicating the presence of an internal field at the muon site, which confirms the long-range magnetic ordering of the Ce moment below 28 K. Upon cooling the sample below 15 K, unusual behavior of the temperature-dependent {mu}SR frequencies may indicate either a change in the muon site, consistent with the observation of superstructure reflections in electron diffraction, or a change in the ordered magnetic structure. Neutron diffraction data do not reveal any clear sign of either magnetic Bragg peaks or superlattice reflections. Furthermore, INS measurements clearly reveal the presence of a sharp inelastic excitation near 11 meV between 5 and 26 K, due to opening of a gap in the spin-excitation spectrum, which transforms into a broad response at and above 30 K. The magnitude of the spin gap (11 meV) as derived from the INS peak position agrees very well with the gap value as estimated from the bulk properties.

  17. A Science Service Feature 'I fiJHY THE WEATHER ?

    E-Print Network [OSTI]

    s usually between 1,000 and 3,000 feet; though "in cold weather and against head winds, also, when them are low clouds or fog, Pilots fly as low as possible, anywhere between 100 and 1500 feet." average speed of half that . velocity, With head winds of t h i s speed, flights are made but are usually delayed. Only

  18. ConstruCtion & PEFC-CErtiFiEd

    E-Print Network [OSTI]

    carbon while growing, uses low energy in conversion, stores carbon in use and is a renewable crop. Timber, certified timber has unique sustainability credentials as a renewable building material compared to concrete requirements of Part L and Part E of the Building Regulations. Using timber is also a huge motivation

  19. T I I TI II~ FI _ I F (T

    E-Print Network [OSTI]

    was established under Public Law 85-342 (1958). It authorized the Secre - tary of the Interior to establish Station, Kelso, Arkansas, we re purchased. Construction of the modern, functional laboratory STORAGE FEEO DODROOM I I N I ~ OFFICE : ~ ... I> TILl T )" " ~ FleE LIBRARY ROOM

  20. NOIS 2112 Shepherd St., FI.lC.

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE-SessionsSouth DakotaRobbins and MyersHr.EvaluationJune~ofOF OHlONEW

  1. NUCLEAR REGULATOR%'-C~fiMls6N REGION I

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE-SessionsSouth DakotaRobbins and MyersHr.EvaluationJune~ofOF OHlONEW* .t-* . *

  2. Jamming-Resistant Rate Adaptation in Wi-Fi Networks$

    E-Print Network [OSTI]

    Starobinski, David

    and to save energy. The main motivation behind jamming is to cause Denial of Service (DoS) [12, 13]. Jamming propose a robust RAA, called Random- ized ARF (RARF). Using tools from renewal theory, we derive a closed

  3. An Electron Microscopy Investigation of the Transient Stage Oxidation Products in an Fe-22Cr Alloy with Ce and La Additions Exposed to Dry Air at 800 [degrees]C

    SciTech Connect (OSTI)

    Zhu, Jingxi; Fernandez Diaz, Laura M; Holcomb, Gordon R; Jablonski, Paul; Cowen, Christopher; Laughlin, David E; Alman, Dave; Seetharaman, Sridhar

    2011-01-01

    In this study, the effects of Ce (270 ppm) and La (120 ppm) mischmetal additions on the transient oxidation of an Fe-22Cr alloy were investigated. The oxidation process was imaged in situ using a confocal scanning laser microscope. The oxidation microstructures were studied by scanning electron microscopy, energy dispersive X-ray analysis, and transmission electron microscopy with the help of focused ion beam in situ lift-out specimen preparation. The Ce and La, referred to as reactive elements, were found in nonmetallic inclusion particles in the forms of oxides, sulfides, and phosphates. An affected zone formed around rare earth (RE)-containing inclusion particles at the alloy free surface during the transient oxidation. This zone consisted of an internal Cr-oxide formed beneath the particle as well as a thinner external oxide scale on the surface compared with the surroundings. The relation of this microstructure to oxidation kinetics is discussed. With time, the RE elements diffused into the scale from the RE particles on the alloy surface during the high-temperature exposure. A diffusion mechanism is presented to describe these observations.

  4. Nanostructured crystals of fluorite phases Sr{sub 1-x}R{sub x}F{sub 2+x} and their ordering: VIII. Imperfect crystal structure of Sr{sub 0.71}Ce{sub 0.29}F{sub 2.29}

    SciTech Connect (OSTI)

    Sulyanova, E. A., E-mail: sulyanova@gmail.com; Karimov, D. N.; Sobolev, B. P. [Russian Academy of Sciences, Shubnikov Institute of Crystallography (Russian Federation)] [Russian Academy of Sciences, Shubnikov Institute of Crystallography (Russian Federation)

    2013-09-15

    A congruently melting single crystal of nonstoichiometric phase Sr{sub 0.71}Ce{sub 0.29}F{sub 2.29} crystallizing into the CaF{sub 2} structural type (sp. gr Fm3-barm) has been studied by X-ray diffraction analysis. Vacancies in the main fluorine position 8c and interstitial anions in two 32f positions have been found. The ratio of the structural defects in the Sr{sub 0.71}Ce{sub 0.29}F{sub 2.29} solid solution corresponds to the tetrahedral configuration of the defect cluster (Sr{sub 4-n}Ce{sub n}F{sub 26})

  5. MEMORANDUM I TO: FILE Fi=aP'

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE-SessionsSouth DakotaRobbins and MyersHr. Anthony V. Andolina:I.) ,' .I TO: FILE

  6. Rwkelr F.,fi I.%&. Lj

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE-SessionsSouthReport for the Weldon Spring,7=cr5rnPandAlba4 Fact Sheet This

  7. civil & environmental (CE) CE / ENE overview programs available

    E-Print Network [OSTI]

    Rohs, Remo

    ; scientific, social, legal and political aspects of environmental issues; air/water/land pollution and control and harbor structures, industrial facilities -- and addressing the prob- lems of ground water and air pollution as well as industrial and hazardous waste man- agement. They are also responsible for developing

  8. Combined effect of chemical pressure and valence electron concentration through the electron-deficient Li substitution on the RE{sub 4}LiGe{sub 4} (RE=La, Ce, Pr, and Sm) system

    SciTech Connect (OSTI)

    Nam, Gnu; Jeon, Jieun; Kim, Youngjo; Kwon Kang, Sung; Ahn, Kyunghan; You, Tae-Soo

    2013-09-15

    Four members of the RE{sub 4}LiGe{sub 4} (RE=La, Ce, Pr, and Sm) system have been prepared by high-temperature reaction method and characterized by X-ray diffractions. All compounds crystallize in the orthorhombic Gd{sub 5}Si{sub 4}-type structure (space group Pnma, Pearson code oP16) with bonding interactions for interslab Ge{sub 2} dimers. The Li substitution for rare-earth elements in the RE{sub 4}LiGe{sub 4} system leads to a combined effect of the increased chemical pressure and the decreased valance electron concentration (VEC), which eventually results in the structure transformation from the Sm{sub 5}Ge{sub 4}-type with all broken interslab Ge–Ge bond for the parental RE{sub 5}Ge{sub 4} to the Gd{sub 5}Si{sub 4}-type structure for the ternary RE{sub 4}LiGe{sub 4} (RE=La, Ce, Pr, and Sm) system. Site-preference between rare-earth metals and Li is proven to generate energetically the most favorable atomic arrangements according to coloring-problem, and the rationale is provided using both the size-factor and the electronic-factor related, respectively, to site-volume and electronegativity as well as QVAL values. Tight-binding, linear-muffin-tin-orbital (TB-LMTO) calculations are performed to investigate electronic densities of states (DOS) and crystal orbital Hamilton population (COHP) curves. The influence of reduced VEC for chemical bonding including the formation of interslab Ge{sub 2} dimers is also discussed. The magnetic property measurements prove that the non-magnetic Li substitution leads to the ferromagnetic (FM)-like ground state for Ce{sub 4}LiGe{sub 4} and the co-existence of antiferromagntic (AFM) and FM ground states for Sm{sub 4}LiGe{sub 4}. - Graphical abstract: Reported is a combined effect of the chemical pressure and the reduced VEC caused by the smaller monovalent non-magnetic Li substitution for the larger trivalent magnetic rare-earth metals in the RE{sub 4}LiGe{sub 4} (RE=La, Ce, Pr, and Sm) system. This results in the structure transformation from the Sm{sub 5}Ge{sub 4}-type to the Gd{sub 5}Si{sub 4}-type structure and the changes in magnetic properties. Display Omitted - Highlights: • Four Li-containing intermetallic compounds RE{sub 4}LiGe{sub 4} (RE=La, Ce, Pr and Sm) were synthesized. • The combined effect of the chemical pressure and the reduced VEC caused by Li substitution for a rare-earth metal results in the structure transformation. • Electronic structures and magnetic properties of title compounds were thoroughly investigated.

  9. NCBECS C&E 1979

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

    includes tinted, reflective, insulated, or thermal pane ty;e of glass that, when installed in the exterior windows of a building., se . i: to reduce the rate of solar...

  10. Almo: Order (2012-CE-1416)

    Broader source: Energy.gov [DOE]

    DOE ordered Almo Corporation to pay a $6,500 civil penalty after finding Almo had failed to certify that certain models of residential refrigerators comply with the applicable energy conservation standards.

  11. Keystone: Order (2013-CE-2601)

    Broader source: Energy.gov [DOE]

    DOE ordered Keystone Technologies, LLC to pay a $8,000 civil penalty after finding Keystone had failed to certify that certain models of fluorescent lamp ballasts comply with the applicable energy conservation standards.

  12. BSH: Order (2013-CE-2001)

    Broader source: Energy.gov [DOE]

    DOE ordered BSH Home Appliances Corp. to pay a $8,000 civil penalty after finding BSH had failed to certify that certain models of residential clothes washers comply with the applicable energy/water conservation standards.

  13. Leotek: Order (2013-CE-4903)

    Broader source: Energy.gov [DOE]

    DOE ordered Leotek Electronics USA Corp. to pay a $8,000 civil penalty after finding Leotek had failed to certify that certain models of traffic signal modules and pedestrian modules comply with the applicable energy conservation standards.

  14. Whirlpool: Order (2014-CE-21010)

    Broader source: Energy.gov [DOE]

    DOE ordered Whirlpool Corporation to pay a $8,000 civil penalty after finding Whirlpool had failed to certify that certain models of residential clothes dryers comply with the applicable energy conservation standards.

  15. Topaz: Order (2014-CE-35005)

    Broader source: Energy.gov [DOE]

    DOE ordered Topaz Lighting Corp. to pay a $8,000 civil penalty after finding Topaz had failed to certify that certain basic models of medium base compact fluorescent lamps, general service fluorescent lamps, and illuminated exit signs comply with the applicable energy conservation standards.

  16. Lattice instabilities in heavy fermion superconductors. [CeCu/sub 2/Si/sub 2/; CeAl/sub 3/; CeCu/sub 6/; UBe/sub 13/; UPt/sub 3/

    SciTech Connect (OSTI)

    Wohlleben, D.

    1987-01-01

    This paper shows that while in nonsuperconducting HF systems such as CeCu/sub 6/, CeAl/sub 3/ and stoichiometric CeCu/sub 2/Si/sub 2/, the large electronic ..gamma.. is due to a very narrow f band, in the three HF superconductors UBe/sub 13/, UPt/sub 3/ and nonstochiometric CeCu/sub 2/Si/sub 2/, it is not. The f band of these systems, as measured by their response to magnetic fields in three different ways, is much wider than suggested by the large ..gamma... According to their actual f band width, the HF superconductors belong into the Bantam Fermion class. It is argued that most of the large ..gamma.. of the HF superconductors is not of electronic origin and that it is instead caused by the precursor of a martensitic phase transition of the lattice or by a crystallographic phase mixture, i.e., that it is due to the displacive degrees of freedom. This suggests that the superconductivity of all three HF superconductors is caused by some special, low energy phonons rather than by a narrow f band. 52 refs., 4 figs., 3 tabs.

  17. CE Solar | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX E LISTStar Energy LLC JumpBiossenceBrunswick, Maine:IAEAT Jump to:CBDCenter ofSolar Jump

  18. Approved Module Information for CE1009, 2014/5 Module Title/Name: Introduction to Transfer Processes Module Code: CE1009

    E-Print Network [OSTI]

    Neirotti, Juan Pablo

    the student: * a knowledge of the fundamentals of heat transfer theory, and of the practical applications of conductive heat transfer theory * a knowledge of the fundamentals of fluid mechanics theory * a knowledgeApproved Module Information for CE1009, 2014/5 Module Title/Name: Introduction to Transfer

  19. CeCap LLP | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoopButte County,Camilla,Thermal Gradient Holes Jump to:MiddleCayucos, California:CeCap

  20. Linac Coherent Light SourCe

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on DeliciousMathematicsEnergyInterested Parties - WAPA PublicLED ADOPTIONtoLighting SystemLinac Coherent Light SourCe

  1. INVESTIGATIONS ON THE USE OF ANODIC STRIPPING VOLTAMMETRY FOR THE ANALYSES OF LEAD IN SALINE ENVIRONMENTS

    E-Print Network [OSTI]

    Case, Charles W.

    2011-01-01

    A - Lead Data . . . . . . . . . . . . . . . . . . . . .10 Lead ..of Lead . . . . . . . . . . . . . . . . . . . . . 119 -2ce

  2. Approved Module Information for CE1004, 2014/5 Module Title/Name: Process and Product Design Module Code: CE1004

    E-Print Network [OSTI]

    Neirotti, Juan Pablo

    . * Concept of scale * Product innovation - customer needs, ideas generation, ideas selection, productApproved Module Information for CE1004, 2014/5 Module Title/Name: Process and Product Design Module on a realistic project Product Design * To understand the difference between commodity and speciality chemicals

  3. Approved Module Information for CE3003, 2014/5 Module Title/Name: Advanced Process Design Project Module Code: CE3003

    E-Print Network [OSTI]

    Neirotti, Juan Pablo

    Module Code: CE3003 School: Engineering and Applied Science Module Type: Project New Module? No Module) Programmes in which available: BEng/MEng Chemical Engineering. Available to Exchange Students? Not Specified. The Design Problem is intended to test the student's ability to apply the principles of Chemical Engineering

  4. Laser-driven proton fast ignition of inertial fusion: concepts, issues and prospects

    SciTech Connect (OSTI)

    Badziak, J.; Jablonski, S.; Wolowski, J. [Institute of Plasma Physics and Laser Microfusion, Hery 23, 01-497 Warsaw (Poland); Honrubia, J. [GIFI, Universidad Politecnica de Madrid, Madrid (Spain)

    2008-03-19

    Fast ignition (FI) is a novel approach to inertial confinement fusion, which has the potential for higher energy gain at lower overall driver energy and cost. This paper is a brief review of basic FI concepts and issues, with a particular emphasis on FI with laser-generated proton beams. General requirements for the DT fuel and the ignitor (particle beam) as well as for the laser drivers are discussed. Key issues related to proton FI are considered and selected results of experimental and numerical studies are described. A progress in development of laser facilities for FI research and prospects for FI experiments are outlined.

  5. Late Antique Plague Ships: Sixth-Century C.E. Trade Routes and Their Role in Transmitting the Justinianic Plague 

    E-Print Network [OSTI]

    Kofahl, Meko

    2013-07-29

    The major European epidemic of bubonic plague in the sixth century C.E. – named for the ruling Byzantine emperor, Justinian – devastated the empire at the same time that outside pressures in the form of Goths, Vandals, ...

  6. Emission properties and back-bombardment for CeB{sub 6} compared to LaB{sub 6}

    SciTech Connect (OSTI)

    Bakr, Mahmoud; Kawai, M.; Kii, T.; Zen, H.; Masuda, K.; Ohgaki, H.

    2015-02-14

    The emission properties of CeB{sub 6} compared to LaB{sub 6} thermionic cathodes have been measured using an electrostatic DC gun. Obtaining knowledge of the emission properties is the first step in understanding the back-bombardment effect that limits wide usage of thermionic radio-frequency electron guns. The effect of back-bombardment electrons on CeB{sub 6} compared to LaB{sub 6} was studied using a numerical simulation model. The results show that for 6??s pulse duration with input radio-frequency power of 8 MW, CeB{sub 6} should experience 14% lower temperature increase and 21% lower current density rise compared to LaB{sub 6}. We conclude that CeB{sub 6} has the potential to become the future replacement for LaB{sub 6} thermionic cathodes in radio-frequency electron guns.

  7. Informations et rservations : ce.pv-holidays.com

    E-Print Network [OSTI]

    Arleo, Angelo

    Informations et réservations : ce.pv-holidays.com * Offre valable pour tout séjour de 7 nuits détails sur ce.pv-holidays.com. Offre valable sur l'hébergement seul (hors frais de dossier, prestations cumulable avec votre remise partenaire, toute offre promotionnelle ou réductions. PV-CPDistribution, Société

  8. Dr. T.P. Clement CE 3010 class notes

    E-Print Network [OSTI]

    Clement, Prabhakar

    1 Dr. T.P. Clement CE 3010 class notes Quotes · Genius is 1 percent inspiration and 99 percent in little things. Excellence is not an exception, it is a prevailing attitude Colin Powell 1 Dr. T.P · Combining conditions · Loops · Examples 2 Dr. T.P. Clement CE 3010 class notes Program to Find Real Roots

  9. Approved Module Information for CE2110, 2014/5 Module Title/Name: Process Laboratory Module Code: CE2110

    E-Print Network [OSTI]

    Neirotti, Juan Pablo

    Approved Module Information for CE2110, 2014/5 Module Title/Name: Process Laboratory Module Code: CE2110 School: Engineering and Applied Science Module Type: Standard Module New Module? No Module Credits: 10 Module Management Information Module Leader Name John Brammer Email Address brammejg

  10. Approved Module Information for CE4018, 2014/5 Module Title/Name: Advanced Particle Processing Module Code: CE4018

    E-Print Network [OSTI]

    Neirotti, Juan Pablo

    Approved Module Information for CE4018, 2014/5 Module Title/Name: Advanced Particle Processing Module Code: CE4018 School: Engineering and Applied Science Module Type: Standard Module New Module? No Module Credits: 10 Module Management Information Module Leader Name Mark Leaper Email Address m

  11. Approved Module Information for CE3013, 2014/5 Module Title/Name: Particle Processing Module Code: CE3013

    E-Print Network [OSTI]

    Neirotti, Juan Pablo

    Approved Module Information for CE3013, 2014/5 Module Title/Name: Particle Processing Module Code: CE3013 School: Engineering and Applied Science Module Type: Standard Module New Module? No Module Credits: 10 Module Management Information Module Leader Name Mark Leaper Email Address m

  12. Approved Module Information for CE3102, 2014/5 Module Title/Name: Reaction Engineering Module Code: CE3102

    E-Print Network [OSTI]

    Neirotti, Juan Pablo

    Approved Module Information for CE3102, 2014/5 Module Title/Name: Reaction Engineering Module Code: CE3102 School: Engineering and Applied Science Module Type: Standard Module New Module? No Module Credits: 10 Module Management Information Module Leader Name Feroz Kabir Email Address kabirf

  13. Approved Module Information for CE3112, 2014/5 Module Title/Name: Nanomaterials Module Code: CE3112

    E-Print Network [OSTI]

    Neirotti, Juan Pablo

    Approved Module Information for CE3112, 2014/5 Module Title/Name: Nanomaterials Module Code: CE3112 School: Engineering and Applied Science Module Type: Standard Module New Module? No Module Credits: 10 Module Management Information Module Leader Name Qingchun Yuan Email Address q.yuan@aston.ac.uk Telephone

  14. Approved Module Information for CE1002, 2014/5 Module Title/Name: Design and Build Module Code: CE1002

    E-Print Network [OSTI]

    Neirotti, Juan Pablo

    Approved Module Information for CE1002, 2014/5 Module Title/Name: Design and Build Module Code: CE1002 School: Engineering and Applied Science Module Type: Standard Module New Module? No Module Credits: 10 Module Management Information Module Leader Name Paul Andrew Tack Email Address tackpa

  15. 978-1-4244-2036-0/08/$25.00 c 2008 IEEE Secure Wi-Fi Sharing at Global Scales

    E-Print Network [OSTI]

    -Fi Internet Sharing Architec- ture PISA, which eliminates these risks by introducing se- cure tunneling areas with private wireless Internet gateways. Despite these facts, broadband Internet is rarely their gateways to others and to accept the ensuing se- curity and liability risks. Thus, mobile users need

  16. An infinite descending chain of Boolean subfunctions consisting of threshold functions

    E-Print Network [OSTI]

    Földes, Stephan

    of Mathematics, Tampere University of Technology, P.O. Box 553, FI-33101 Tampere, Finland. E-mail: erkko

  17. ARTIFIC~L r~rELUOE~CE 189 STRIPS: A New Approach to the

    E-Print Network [OSTI]

    Pratt, Vaughan

    can be proven to be true. STRIPS represents a world n,~del as an arbitrary collection offirst-order, a world model is r~presented by a set of well- formed formulas (wffs) of the first-order predicateARTIFIC~L r~rELUOE~CE 189 STRIPS: A New Approach to the Application of .Theorem Proving to Problem

  18. Composition of Post Classes and Normal Forms of Boolean Functions

    E-Print Network [OSTI]

    Földes, Stephan

    and Philosophy, University of Tampere, FI-33014 Tampereen yliopisto, Finland. E-mail: miguel the Academy of Finland. Institute of Mathematics, Tampere University of Technology, P.O. Box 553, FI-33101 Tampere, Finland. E-mail: stephan.foldes@tut.fi. Corresponding author. Institute of Mathematics, Tampere

  19. Order-theoretical analysis of subfunction relations between Boolean functions

    E-Print Network [OSTI]

    Földes, Stephan

    -equivalence relations coincide for distinct clones C and K. Institute of Mathematics, Tampere University of Technology, P.O. Box 553, FI-33101 Tampere, Finland. E-mail: erkko.lehtonen@tut.fi. 1 #12;The paper is organized

  20. Inelastic magnetic neutron scattering in CePd{sub 3}.

    SciTech Connect (OSTI)

    Lawrence, J. M.; Fanelli, V. R.; Goremychkin, E. A.; Osborn, R.; Bauer, E. D.; McClellan, K. J.; Christianson, A. D.; Univ. of California at Irvine; LANL; ORNL

    2008-01-01

    We have performed time-of-flight neutron scattering measurements on a single crystal of the intermediate valence compound CePd{sub 3}. At 10 K, a Kondo-esque inelastic magnetic scattering peak occurs near {Delta}E = 60 meV with maximum intensity for momentum transfer Q near the (1/2, 1/2, 0) zone boundary. Spectral weight is transferred to lower energy as Q varies until at zone center the intensity at 60 meV is considerably weaker. These results are in qualitative accord with predictions of the Anderson lattice. The Q-dependence may resolve an older controversy concerning the low-temperature scattering. We discuss the relationship of these results to our recent results in YbAl{sub 3}.

  1. Hydrodynamic and water quality river basin modeling using CE-QUAL-W2 version 3

    E-Print Network [OSTI]

    Wells, Scott A.

    of the Lower Snake River in the Northwestern USA; the Bull Run River basin composed of 3 water supplyHydrodynamic and water quality river basin modeling using CE-QUAL-W2 version 3 Scott A. Wells for deep, long, and narrow waterbodies. The current model, Version 2, has been used in over 200 river

  2. Proc. of the 11th Int. Conference on Digital Audio Effects (DAFx-08), Espoo, Finland, September 1-4, 2008

    E-Print Network [OSTI]

    Virtanen, Tuomas

    Tampere University of Technology Tampere, Finland annamaria.mesaros@tut.fi Tuomas Virtanen, Dept. of Signal Processing Tampere University of Technology Tampere, Finland tuomas.virtanen@tut.fi ABSTRACT

  3. Phase transition and possible metallization in CeVO{sub 4} under pressure

    SciTech Connect (OSTI)

    Garg, Alka B.; Shanavas, K.V.; Wani, B.N.; Sharma, Surinder M.

    2013-07-15

    Phase stability of CeVO{sub 4} under pressure has been investigated using synchrotron based angle dispersive x-ray diffraction (ADXRD), electrical resistance and first principles calculations. The results indicate that the ambient zircon structure of the compound transforms to a low symmetry monoclinic monazite phase beyond 3.8 GPa with nearly 8.6% volume discontinuity. Beyond 11 GPa, the pattern could be fitted to a similar monazite structure which is about 12.7% denser and has a much larger monoclinic beta angle. On pressure release the first monoclinic phase is recovered. The electrical resistance data show a large drop in resistance with pressure indicating substantial narrowing down of the band gap. Electronic structure calculations support these observations and suggest possible pressure induced metallization in this material. - Pressure induced structural phase transition in CeVO{sub 4} as observed by x- ray diffraction (pressure vs. volume) and possible metallization in CeVO{sub 4} through electrical resistance and first principles electronic structure calculations. - Highlights: • Structural and electrical behavior of CeVO{sub 4} under pressure studied using x-ray diffraction and electrical resistance measurements and first principles calculations. • Two successive structural transitions confirmed by experiment and theory: zircon–monazite I–monazite II. • Band gap collapse and possible metallization is indicated by electrical resistance measurements and electronic structure calculations under pressure. • Novel observation of lower bulk modulus in the high pressure phase (both by experiment and calculations) explained through structural analysis.

  4. Homomorphicity and non-coreness of labeled posets are NP-complete

    E-Print Network [OSTI]

    Földes, Stephan

    -posets is a universal distributive lattice [14]. Institute of Mathematics, Tampere University of Technology, P.O. Box 553, FI-33101 Tampere, Finland. Email: erkko.lehtonen@tut.fi. 1 #12;In the current paper, we represent

  5. Technical Report No. 480 CE: The Classi er Estimator Framework for Data mining

    E-Print Network [OSTI]

    Dalkilic, Mehmet

    Technical Report No. 480 CE: The Classi er Estimator Framework for Data mining Mehmet M. Dalkilic a coherent framework for data mining in the relational model. Observing that data mining depends on two. The classi er indicates the target of the data mining investigation. The classi er may be di cult to express

  6. CE-QUAL-W2 Version 3: Hydrodynamic and Water Quality River Basin Modeling

    E-Print Network [OSTI]

    Wells, Scott A.

    and Oregon; the Bull Run River basin composed of 3 water sup- ply reservoirs and 2 river sections with a 2CE-QUAL-W2 Version 3: Hydrodynamic and Water Quality River Basin Modeling S. A. Wells Department for deep, long, and narrow waterbodies. The current model, Version 2, has been used in over 200 river

  7. Supplemental Material for: Simulation of crystallization in Ge2Sb2Te5

    E-Print Network [OSTI]

    , Tampere University of Technology, P.O. Box 692, FI-33101 Tampere, Finland 2 Department of Nuclear Science

  8. Descending chains and antichains of the unary, linear, and monotone subfunction relations

    E-Print Network [OSTI]

    Földes, Stephan

    of Mathematics, Tampere University of Technology, P.O. Box 553, FI-33101 Tampere, Finland. E-mail: erkko

  9. Percolation theory and quantum critical systems: A new description of the critical behavior in Ce(Ru{sub 0.24}Fe{sub 0.76}){sub 2}Ge{sub 2}

    SciTech Connect (OSTI)

    Gaddy, John [Department of Physics and Astronomy, University of Missouri, Columbia, Missouri 65211 (United States); Heitmann, Tom, E-mail: HeitmannT@missouri.edu [Missouri Research Reactor, University of Missouri, Columbia, Missouri 65211 (United States); Montfrooij, Wouter [Department of Physics and Astronomy, University of Missouri, Columbia, Missouri 65211 (United States); Missouri Research Reactor, University of Missouri, Columbia, Missouri 65211 (United States)

    2014-05-07

    The onset of ordering in quantum critical systems is characterized by a competition between the Kondo shielding of magnetic moments and the ordering of these moments. We show how a distribution of Kondo shielding temperatures—resulting from chemical doping—leads to critical behavior whose main characteristics are given by percolation physics. With the aid of Monte Carlo computer simulations, we are able to infer the low temperature part of the distribution of shielding temperatures in heavily doped quantum critical Ce(Ru{sub 0.24}Fe{sub 0.76}){sub 2}Ge{sub 2}. Based on this distribution, we show that the ordering dynamics—such as the growth of the correlation length upon cooling—can be understood by the spawning of magnetic clusters. Our findings explain why the search for universal exponents in quantum critical systems has been unsuccessful: the underlying percolation network associated with the chemical doping of quantum critical systems has to be incorporated in the modeling of these quantum critical systems.

  10. Crystallization of amorphous Ge2Sb2Te5: Order from disorder R. O. Jones,1,2

    E-Print Network [OSTI]

    , Finland 4 Department of Physics, Tampere University of Technology, P.O. Box 692, FI-33101, Tampere

  11. ALL p-LOCAL FINITE GROUPS OF RANK TWO FOR ODD PRIME p ...

    E-Print Network [OSTI]

    ... S = 71+2+and all the rank two elementary abelian subgroups are F-rad* *ical, ..... subgroup of B(3, r; fi, fl, ffi), (B* *(3, r; fi, fl, ffi)), is = .

  12. Structure of amorphous Ge8Sb2Te11: GeTe-Sb2Te3 alloys and optical storage J. Akola1,2,3

    E-Print Network [OSTI]

    of Physics, Tampere University of Technology, P.O. Box 692, FI-33101 Tampere, Finland Received 28 January

  13. PLUS: eating diSorderS n antibioticS and meat n fat tax Q&a Magazine of the geraLd J. and dorothy r. friedMan sChooL of nutrition sCienCe and poLiCy SSUUmmmmeer 2r 200112 V2 VooLL. 1. 133 nnoo. 2. 2

    E-Print Network [OSTI]

    Dennett, Daniel

    . friedMan sChooL of nutrition sCienCe and poLiCy SSUUmmmmeer 2r 200112 V2 VooLL. 1. 133 nnoo. 2. 2 this installment of "Ask Tufts Nutrition," Alexis Madej, N08, a clinical dietitian at the Frances Stern Nutrition, or provide an energy boost for a daily workout. A great combination for a satisfying snack is a mix

  14. 1272 IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS, VOL. 12, 2013 Implementation of a Dual-Interrogation-Mode

    E-Print Network [OSTI]

    Tentzeris, Manos

    are with the Tampere University of Technology, 33720 Tampere, Finland (e-mail: masoumeh.hasani@tut.fi; arnaud

  15. Distance decay of similarity in freshwater communities: do macro-and

    E-Print Network [OSTI]

    , Finland, 2 Department of Geosciences and Geography, PO Box 65, FI-00014, University of Helsinki, Finland, 3 Department of Environmental Sciences, PO Box 65, FI-00014, University of Helsinki, Finland, 4 Finnish Environment Institute, Research Department, PO Box 413, FI-90014, University of Oulu, Finland

  16. 2011 IEEE Workshop on Applications of Signal Processing to Audio and Acoustics October 16-19, 2011, New Paltz, NY MULTICHANNEL AUDIO UPMIXING BASED ON NON-NEGATIVE TENSOR

    E-Print Network [OSTI]

    Virtanen, Tuomas

    . Nikunen, T. Virtanen Tampere University of Technology Korkeakoulunkatu 1, 33720 Tampere, Finland joonas.nikunen@tut.fi, tuomas.virtanen@tut.fi M. Vilermo Nokia Research Center Visiokatu 1, 33720 Tampere, Finland miikka

  17. Copyright (c) 2011 IEEE. Personal use is permitted. For any other purposes, Permission must be obtained from the IEEE by emailing pubs-permissions@ieee.org. This article has been accepted for publication in a future issue of this journal, but has not been

    E-Print Network [OSTI]

    Virtanen, Tuomas

    Processing, Tampere University of Technology, P.O. Box 553, FI-33101 Tampere, Finland, e-mail: tuomas

  18. Nickel deficiency in RENi2-xP2 (RE=La, Ce, Pr). Combined crystallographic and physical property studies

    SciTech Connect (OSTI)

    Bauer, Eric D; Ronning, Filip; Thompson, Joe D; Sarrao, John L; Bobev, S; Xia, S

    2008-01-01

    Large single crystals from RENi{sub 2-x}P{sub 2} (RE = La, Ce, Pr) were synthesized from the pure elements using Sn as a metal flux, and their structures were established by X-ray crystallography. The title compounds were confirmed to crystallize in the body-centered tetragonal ThCr{sub 2}Si{sub 2} structure type (space group I4/mmm (No. 139); Pearson's symbol tI10), but with a significant stoichiometry breadth with respect to the transition metal. Systematic synthetic work, coupled with accurate structure refinements indicated strong correlation between the degree of Ni-deficiency and the reaction conditions. For four different PrNi{sub 2-x}P{sub 2} (x {le} 0.5) samples, temperature dependent dc magnetization measurements indicated typical local moment 4f-magnetism and a stable Pr{sup 3+} ground state. Field-dependent heat capacity data confirmed a ferromagnetic order at low temperature, and the variations of T{sub c} with the concentration of Ni defects are discussed. LaNi{sub 2-x}P{sub 2}, as expected was found to be Pauli-like paramagnetic in the studied temperature regime, while the Ce-analog CeNi{sub 2-x}P{sub 2} (x = 0.28(1)) showed the characteristics of a mixed valent Ce{sup 3+}/Ce{sup 4+} system with a possible Kondo temperature on the order of 230 K.

  19. Pressure-Induced Structural Phase Transition in CeNi: X-ray and Neutron Scattering Studies and First-Principles Calculations

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

    Mirmelstein, A.; Podlesnyak, Andrey A.; dos Santos, Antonio M.; Ehlers, Georg; Kerbel, O.; Matvienko, V.; Sefat, A. S.; Saporov, B.; Halder, G. J.; Tobin, J. G.

    2015-08-03

    The pressure-induced structural phase transition in the intermediate-valence compound CeNi has been investigated by x-ray and neutron powder diffraction techniques. It is shown that the structure of the pressure-induced CeNi phase (phases) can be described in terms of the Pnma space group. Equations of state for CeNi on both sides of the phase transition are derived and an approximate P-T phase diagram is suggested for Pmore »the phase transition.« less

  20. Trends in Electrical Transport of p-type Skutterudites RFe4Sb12 (R-Na,K,Ca,Sr,Ba,La,Ce,Pr,Yb) from First Principles Calculations and Boltzmann Transport Theory

    SciTech Connect (OSTI)

    Yang, Jiong [Chinese Academy of Sciences; Qiu, P [Shanghai Institute of Ceramics, Chinese Academy of Sciences (SICCAS); Liu, R [Shanghai Institute of Ceramics, Chinese Academy of Sciences (SICCAS); Xi, L [Shanghai Institute of Ceramics, Chinese Academy of Sciences (SICCAS); Zheng, S [Shanghai Institute of Ceramics, Chinese Academy of Sciences (SICCAS); Zhang, W [Shanghai Institute of Ceramics, Chinese Academy of Sciences (SICCAS); Chen, Lidong [Chinese Academy of Sciences; Singh, David J [ORNL

    2011-01-01

    We report a consistent set of ab initio calculations of the electronic structures and electrical transport properties of p-type thermoelectric compounds RFe{sub 4}Sb{sub 12}, where R is a rattling filler selected from alkali metals (Na, K), alkaline earths (Ca, Sr, Ba), and rare earth metals (La, Ce, Pr, Yb). Different from the single Sb-dominated light band in the valence band edge of CoSb{sub 3}, the heavy bands from Fe d electronic states also fall in the energy range close to the valence band edges in the RFe{sub 4}Sb{sub 12}. These heavy bands dominate the band-edge density of states, pin the Fermi levels, and mostly determine the electrical transport properties of those p-type RFe{sub 4}Sb{sub 12}. The Seebeck coefficients can be roughly categorized into three groups based on the charge states of fillers, and the maxima are lower than those of n-type CoSb{sub 3} skutterudites. Effective carrier relaxation time in p-type RFe{sub 4}Sb{sub 12}, obtained from the combinations of calculations and experiments, is remarkably similar among different compounds with values around 7.5 x 10{sup -15} s and weak temperature dependence. The optimal doping levels of those RFe{sub 4}Sb{sub 12} are estimated to be around 0.6-0.8 holes per unit cell at 850 K, which is difficult to achieve in RFe{sub 4}Sb{sub 12} compounds. Prospects for further improving the performance of p-type skutterudites are also discussed.

  1. Part of the Earth Day 2012 Celebration Energy Center Global Sustainability Initiative (GSI) Purdue Interdisciplinary Center for Ecological Sustainability (PICES) Purdue Energy Club O ce of Sustainability

    E-Print Network [OSTI]

    at which global oil production stagnates and then goes into decline ­ will change the game of oil politics of the world.Will oil skirmishes become oil wars? If Peak Oil were the only major challenge this century thingsSPONSORS Part of the Earth Day 2012 Celebration Energy Center Global Sustainability Initiative (GSI

  2. In situ spectroscopic detection of SMSI effect in a Ni/CeO2 system: hydrogen-induced burial and dig out of metallic nickel

    SciTech Connect (OSTI)

    Caballero, Alfonso; Holgado, Juan P.; Gonzalez-delaCruz, Victor M.; Habas, Susan e.; Herranz, Tirma; Salmeron, Miquel

    2010-06-29

    In situ APPES technique demonstrates that the strong metal support interaction effect (SMSI) in the Ni-ceria system is associated with the decoration and burial of metallic particles by the partially reduced support, a phenomenon reversible by evacuation at high temperature of the previously absorbed hydrogen.

  3. UniverSity of MiaMi roSenStiel SChool of Marine and atMoSpheriC SCienCe

    E-Print Network [OSTI]

    Miami, University of

    rickenbacker Causeway Miami, florida 33149 http://www.rsmas.miami.edu Carbonate Sedimentology Carbonates act research. a history of carbonate sedimentology Rosenstiel School scientists pioneered work in the comparative sedimentology of carbonate sediments in the early 1970s. This early work set the foundation

  4. Single to Multiquasiparticle Excitations in the Itinerant Helical Magnet CeRhIn5

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

    Stock, C.; Rodriguez-Rivera, J. A.; Schmalzl, K.; Rodriguez, E. E.; Stunault, A.; Petrovic, C.

    2015-06-19

    Neutron scattering is used to measure the quantum spin fluctuations in CeRhIn5 - the parent material of the eXIn5 superconducting series. Out-of-plane spin fluctuations are gapped and localized in momentum, similar to the spin excitons in CeCoIn5. The in-plane fluctuations consist of sharp spin-wave excitations parameterized by a nearest neighbor exchange JRKKY =0.88 ± 0.05 meV that crossover to a temporally and spatially broad multiparticle spectrum with energies of ~ 2 × JRKKY . This continuum represents composite fluctuations that illustrate the breakdown of single magnons originating from the delicate energy balance between localized 4f and itinerant behavior in amore »heavy metal. The experiment therefore shows how quasiparticle behavior is changed by the close proximity of quantum criticality.« less

  5. Update on the CeC PoP 704 MHz 5-cell cavity cryomodule design and fabrication

    SciTech Connect (OSTI)

    Brutus, J. C.; Belomestnykh, S.; Ben-Zvi, I.; Grimm, T.; Huang, Y.; Jecks, R.; Kelly, M.; Litvinenko, V.; Pinayev, I.; Reid, T.; Skaritka, J.; Snydstrup, L.; Than, R.; Tuozzolo, J.; Xu, W.; Yancey, J.; Gerbick, S.

    2015-05-03

    A 5-cell SRF cavity operating at 704 MHz will be used for the Coherent Electron Cooling Proof of Principle (CeC PoP) system under development for the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory. The CeC PoP experiment will demonstrate the new technique of cooling proton and ion beams that may increase the beam luminosity in certain cases, by as much as tenfold. The 704 MHz cavity will accelerate 2 MeV electrons from a 112 MHz SRF gun up to 22MeV. This paper provides an overview of the design, the project status and schedule of the 704 MHz 5-cell SRF for CeC PoP experiment.

  6. Reactivity and reaction intermediates for acetic acid adsorbed on CeO2(111)

    SciTech Connect (OSTI)

    Calaza, Florencia; Chen, Tsung-Liang; Mullins, David R; Xu, Ye; Overbury, Steven {Steve} H

    2015-01-01

    Adsorption and reaction of acetic acid on a CeO2(1 1 1) surface was studied by a combination of ultra-highvacuum based methods including temperature desorption spectroscopy (TPD), soft X-ray photoelectronspectroscopy (sXPS), near edge X-ray absorption spectroscopy (NEXAFS) and reflection absorption IRspectroscopy (RAIRS), together with density functional theory (DFT) calculations. TPD shows that thedesorption products are strongly dependent upon the initial oxidation state of the CeO2surface, includingselectivity between acetone and acetaldehyde products. The combination of sXPS and NEXAFS demon-strate that acetate forms upon adsorption at low temperature and is stable to above 500 K, above whichpoint ketene, acetone and acetic acid desorb. DFT and RAIRS show that below 500 K, bridge bondedacetate coexists with a moiety formed by adsorption of an acetate at an oxygen vacancy, formed bywater desorption.

  7. Experimental determination of CePO4 and YPO4 solubilities in H2ONaF at 800C and 1 GPa: implications for rare earth

    E-Print Network [OSTI]

    Manning, Craig

    AND D. E. HARLOV3 1 Institute of Mineralogy and Petrography, Faculty of Geo- and Atmospheric Sciences, Institute of Mineralogy and Petrography, Faculty of Geo- and Atmospheric Sciences, University of Innsbruck

  8. PSD Methods Comparison and Discrimination Efficiency Study for LaBr3:Ce Detector

    E-Print Network [OSTI]

    Cang, Jirong; Zeng, Zhi; Cheng, Jianping; Liu, Yinong; Li, Junli

    2015-01-01

    LaBr3:Ce scintillator has been widely studied for nuclear spectroscopy because of its optimal energy resolution (efficient and a potential method to suppress the alpha background from the 227Ac. In this paper, a detailed comparison of 3 digital PSD algorithms, the Charge Comparison Method, the Mean Time Method and the Gamma-Alpha Model Analysis Method, for alpha and gamma discrimination in LaBr3:Ce was done. The algorithm parameters and discrimination efficiency were analyzed and optimized for each method. Moreover, for the CCM, the correlation between the CCM feature value distribution and the total charge (energy) was quantitatively analyzed, and a fitting equation of the correlation is inferred and verified with experiment. With the equation, an energy-dependent threshold was chosen to optimize the discrim...

  9. SIMULATIONS OF DEUTERIUM-TRITIUM EXPERIMENTS IN TFTR R.V. BUDNY, M.G. BELL, H. BIGLARI, M. BITTER, C.E. BUSH, C.Z. CHENG,

    E-Print Network [OSTI]

    Budny, Robert

    of the thermal plasma are calculated using the same methods employed in modelling the fast ions from neutral beam down to the average energy of the local thermal ion population (i kTi). Collisional coupling between is discussed in detail to indicate the degree of accuracy of the TRANSP modelling. Fusion energy yields and 01

  10. A New Family of Scintillating Cerium Halide Based Materials: CeX3 ROH compounds containing Planes, Chains and Tetradecanuclear Rings

    SciTech Connect (OSTI)

    Vaughn, Shae Anne [University of South Carolina; Chakoumakos, Bryan C [ORNL; Custelcean, Radu [ORNL; Ramey, Joanne Oxendine [ORNL; Boatner, Lynn A [ORNL; Zur Loye, Hans-Conrad [University of South Carolina

    2012-01-01

    Herein, we communicate the synthesis and structural characterization of the next generation of potential cerium-based scintillators. Three intriguing structural motifs have been achieved through the use of various alcohols, wherein BuOH and PrOH lead to 1-D chains of tetradecanuclear rings, isoBuOH leads to 2-D parquet patterned sheets of tetradecanuclear rings and secBuOH leads to a zig-zag 1-D chain.

  11. One-dimensional chain structures produced by Ce on Si(111)

    E-Print Network [OSTI]

    Kim, Sehun

    of rare-earth metals on semicon- ductors, especially Si [1], by self-assembly has at- tracted considerable) surfaces have been reported for various rare-earth metals (e.g., Ce [6­8], Sm [9], Er [10,11], Eu [12 structures have been reported for many rare-earth metals, such as 3 · 2, 5 · 1, and 7 · 1 for Sm, 5 · 2

  12. Remarkably robust and correlated coherence and antiferromagnetism in (Ce1-x Lax)Cu?Ge?

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

    Hodovanets, H.; Bud’ko, S.? L.; Straszheim, W.? E.; Taufour, V.; Mun, E.? D.; Kim, H.; Flint, R.; Canfield, P.? C.

    2015-06-08

    We present magnetic susceptibility, resistivity, specific heat, and thermoelectric power measurements on (Ce1-x Lax)Cu?Ge? single crystals (0 ? x ? 1). With La substitution, the antiferromagnetic temperature TN is suppressed in an almost linear fashion and moves below 0.36 K, the base temperature of our measurements for x > 0.8. Surprisingly, in addition to robust antiferromagnetism, the system also shows low temperature coherent scattering below Tcoh up to ~ 0.9 of La, indicating a small percolation limit ~ 9% of Ce. Tcoh as a function of magnetic field was found to have different behavior for x more »> 0.9. Remarkably, (Tcoh)² at H = 0 was found to be linearly proportional to TN. The jump in the magnetic specific heat ?Cm at TN as a function of TK/TN for (Ce1-x Lax)Cu?Ge? follows the theoretical prediction based on the molecular field calculation for the S = 1/2 resonant level model.« less

  13. Transport and magnetic properties of laser ablated La0.7Ce0.3MnO3 films P. Raychaudhuri,a)

    E-Print Network [OSTI]

    Raychaudhuri, Pratap

    . Mandal Saha Institute of Nuclear Physics, Block-AF, Sector I, Salt Lake, Calcutta-700064, India Received. This is associated with a compression of the unit cell in the a-b plane due to epitaxial strain. On codoping with 50 at the rare-earth site 3 as in the parent material LaMnO3. © 1999 American Institute of Physics. S0021-8979 99

  14. Review of Wavelet Theory and Harmonic Analysis in Applied Sciences, C.E. D'Atellis and E.M. Fernandez-Berdaguer, Ed.

    E-Print Network [OSTI]

    Kon, Mark

    proceedings which have wavelet theory as their theme; it includes both theoretical and applied topics in wavelet analysis. The advantage of wavelets over standard Fourier techniques is their ability to localize of standard wavelet constructions to include bases whose successive scales are not mutually orthogonal

  15. Anomalous grain growth in the surface region of a nanocrystalline CeO2 film under low-temperature heavy ion irradiation

    SciTech Connect (OSTI)

    Edmondson, Philip D.; Zhang, Yanwen; Moll, Sandra J.; Varga, Tamas; Namavar, Fereydoon; Weber, William J.

    2012-06-15

    Grain growth and phase stability of nanocrystalline ceria are investigated under ion irradiation at different temperatures. Irradiations at temperatures of 300 and 400 K result in uniform grain growth throughout the film. Anomalous grain growth is observed in thin films of nanocrystalline ceria under 3 MeV Au+ irradiation at 160 K. At this low temperature, significant grain growth is observed within 100 nm from the surface, no obvious growth is detected in the rest of the films. While the grain growth is attributed to a defect-stimulated mechanism at room temperature and above, a defect diffusion-limited mechanism is significant at low temperature with the primary defect responsible being the oxygen vacancy. The nanocrystalline grains remain in the cubic phase regardless of defect kinetics.

  16. Characterization and control of non-stoichiometry in Pr?.?Ce?.?O?-[d?e?l?t?a?] thin films : correlation with SOFC electrode performance

    E-Print Network [OSTI]

    Chen, Di, Ph. D. Massachusetts Institute of Technology

    2014-01-01

    While the properties of functional oxide thin films often depend strongly on oxygen nonstoichiometry (6), there have been few means available for its measurement and control in a reliable and in-situ fashion. In this work, ...

  17. Color tuning of Y{sub 3}Al{sub 5}O{sub 12}:Ce phosphor and their blend for white LEDs

    SciTech Connect (OSTI)

    Kottaisamy, M. [Materials Research Laboratory, Kalasalingam University, Krishnankoil 626 190 (India)], E-mail: mmksamy66@yahoo.com; Thiyagarajan, P.; Mishra, J.; Ramachandra Rao, M.S. [Materials Science Research Centre, Indian Institute of Technology Madras, Chennai 600 036 (India); Department of Physics, Indian Institute of Technology Madras, Chennai 600 036 (India)

    2008-07-01

    Gadolinium or lanthanum co-doped (0.5 mole) yttrium aluminum garnet doped with cerium phosphors were synthesized by a citric acid gel method and the effect of co-dopants on the structural and luminescent properties were studied. A significant peak shift in the photoluminescence spectra of yttrium aluminum garnet doped cerium was observed from 535 to 556 and 576 nm for gadolinium or lanthanum co-doped phosphors, respectively. The color tuned phosphor were blended with yttrium aluminum garnet doped cerium which showed a considerable improvement in the Commission International De Eclairage chromaticity co-ordinate values of gallium nitride based blue light emitting diode pumped white light. White light emitted from yttrium aluminum garnet doped cerium shows a Commission International De Eclairage value of (0.229, 0.182) whereas the yttrium aluminum garnet doped cerium phosphor blended with gadolinium or lanthanum co-doped phosphor shows (0.262, 0.243) and (0.295, 0.282), respectively. These results demonstrate the possibility to use these phosphor blends to enhance the white light generation in the field of white-light emitting diode solid-state lighting.

  18. Magnetic hardening of Ce1+xFe11-yCoyTi with ThMn12 structure by melt

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfate Reducing(Journalspectroscopy ofArticle)SciTech Connectspinning (Journal Article) | SciTech

  19. Structure and Magnetic Properties of Ce3(Ni/Al/Ga)11„A New Phase with the La3Al11 Structure Type

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail. (Conference)Feedback System inStatus of theSciTechin aCrystals 2015, 5, 1-8;

  20. Thermodynamic and spectral properties of compressed Ce calculated using a combined local-density approximation and dynamical mean-field theory

    E-Print Network [OSTI]

    Scalettar, Richard T.

    occupancy, we find a noticeable decrease in correlation on compression across the transition; however, even-liquid behavior with an effective mass of about 20me .6 Also the magnetic susceptibility and its temperature dependence change from a Curie-Weiss-like behavior in the phase to a Pauli paramagnetic behavior in the phase

  1. Processing and Properties of Bulk Y?Ba?Cu?O Superconductors Fabricated by Top Seeded Melt Growth from Precursor Pellets Containing a Graded CeO2 Composition

    E-Print Network [OSTI]

    Zhai, Wei; Shi, Yunhua; Durrell, John H.; Dennis, Anthony R.; Zhang, Zhiwei; Cardwell, David A.

    2015-01-08

    have a significant potential for high field, permanent magnet applications1 such as flywheel energy storage systems2 and magnetic bearings3 due to their ability to trap large magnetic fields at the boiling point of liquid nitrogen (77 K).4 The field...

  2. Remedial Action Plan for the codisposal and stabilization of the Monument Valley and Mexican Hat uranium mill tailings at Mexican Hat, Utah: Appendices C--E. Final report

    SciTech Connect (OSTI)

    NONE

    1993-02-01

    This document provides appendices C, D, and E this Remedial Action Plan (RAP) which is a revision of the original Mexican Hat Remedial Action Plan and RAP Modification submitted in July 1988 and January 1989, respectively, along with updated design documents. Appendix C provide the Radiological Support Plan, Appendix D provides the Site Characterization, and Appendix E provides the Water Resources Protection Strategy.

  3. CE 4990 -Construction Scheduling Integrating Cost and Schedule

    E-Print Network [OSTI]

    Mukherjee, Amlan

    CE 4990 - Construction Scheduling Integrating Cost and Schedule March 16, 2012 Definitions The goal) = BCWP/BCWS · Cost Variance (CV) = BCWP - ACWP · Cost Performance Index (CPI) = BCWP/ACWP · EAC = ACWP is to develop integrated metrics for measuring cost and schedule performance. This note provides guidelines

  4. EnTRAnCE AWARDS AGBIO Renewable Entrance

    E-Print Network [OSTI]

    Peak, Derek

    EnTRAnCE AWARDS AGBIO Renewable Entrance Scholarships Benjamin Dietrich, Moosomin Logan Pizzey Megan Hodges, Dalmeny COnTInUInG STUDEnT AWARDS AGBIO Renewable Entrance Scholarships, Second Year Tracy Smith, Radisson AGBIO Renewable Entrance Scholarships, Third Year Melanie Hawrysh, Borden Kathryn Stolle

  5. Progressive Multiple Biosequence Alignments on the ALiCE Grid

    E-Print Network [OSTI]

    Teo, Yong-Meng

    to high-end computational capabilities [10]. The pioneer grid efforts spun off as experimental attemptsProgressive Multiple Biosequence Alignments on the ALiCE Grid Yong-Meng TEO1,2 , Yew-Kwong NG1 problem that has semi-regular computational pattern. Grid-enabled PMSA is implemented using our Java

  6. A ferromagnetic quantum critical point in heavy-fermion iron oxypnictide CeFe{sub 1?x}Cr{sub x}PO

    SciTech Connect (OSTI)

    Okano, T.; Matoba, M.; Kamihara, Y.; Kitao, S.; Seto, M.; Atou, T.; Itoh, M.

    2015-05-07

    We report crystallographic and magnetic properties of layered iron oxypnictide CeFe{sub 1?x}Cr{sub x}PO (x?=?0.000–0.692). Interlayer distances between Ce{sub 2}O{sub 2} and (Fe{sub 1?x}Cr{sub x}){sub 2}P{sub 2} layers increase as a function of x, suggesting suppression of Kondo coupling among hybridized conducting orbitals and localized Ce 4f orbitals. CeFe{sub 1?x}Cr{sub x}PO (x?=?0.100–0.384) exhibits finite ferromagnetic transition temperatures (T{sub curie}) obtained by Arrott plots, although {sup 57}Fe Mössbauer spectra reveal paramagnetic Fe sublattice at T???4.2?K. These results indicate that the ferromagnetic phase transitions of samples are mainly due to Ce sublattice. For the samples with x???0.500, no ferromagnetic order is observed down to 2?K. These results verify that ferromagnetic quantum critical points of CeFe{sub 1?x}Cr{sub x}PO appear at 0.045???x???0.100 and 0.384???x???0.500.

  7. Antiferromagnetic Kondo lattice in the layered compound CePd1–xBi? and comparison to the superconductor LaPd1–xBi?

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

    Han, Fei; Wan, Xiangang; Phelan, Daniel; Stoumpos, Constantinos C.; Sturza, Mihai; Malliakas, Christos D.; Li, Qing'an; Han, Tian-Heng; Zhao, Qingbiao; Chung, Duck Young; et al

    2015-07-13

    The layered compound CePd1–xBi? with the tetragonal ZrCuSi?-type structure was obtained from excess Bi flux. Magnetic susceptibility data of CePd1–xBi? show an antiferromagnetic ordering below 6 K and are anisotropic along the c axis and the ab plane. The anisotropy is attributed to crystal-electric-field (CEF) effects and a CEF model which is able to describe the susceptibility data is given. An enhanced Sommerfeld coefficient ? of 0.191 J mol Ce?¹ K?² obtained from specific-heat measurement suggests a moderate Kondo effect in CePd1–xBi?. Other than the antiferromagnetic peak at 6 K, the resistivity curve shows a shoulderlike behavior around 75 Kmore »which could be attributed to the interplay between Kondo and CEF effects. Magnetoresistance and Hall-effect measurements suggest that the interplay reconstructs the Fermi-surface topology of CePd1–xBi? around 75 K. Electronic structure calculations reveal that the Pd vacancies are important to the magnetic structure and enhance the CEF effects which quench the orbital moment of Ce at low temperatures.« less

  8. Module Information for CE3104, 2015/6 -APPROVED Module Title/Name: Process & Pollution Control Module Code: CE3104

    E-Print Network [OSTI]

    Rebollo-Neira, Laura

    - characteristics, variation with source, treatment principles, discharge to sewers and watercourses - Air PollutionModule Information for CE3104, 2015/6 - APPROVED Module Title/Name: Process & Pollution Control on piping and instrumentation diagrams (P&ID). Indicative Module Content: Pollution Prevention and Control

  9. Syntheses, Structure, Magnetism, and Optical Properties of the Ordered Interlanthanide Copper Chalcogenides Ln{sub 2}YbCuQ{sub 5} (Ln = La, Ce, Pr, Nd, Sm; Q = S, Se): Evidence for Unusual Magnetic Ordering in Sm{sub 2}YbCuS{sub 5}

    SciTech Connect (OSTI)

    Jin, Geng Bang; Choi, Eun Sang; Guertin, Robert P.; Booth, Corwin H.; Albrecht-Schmitt, Thomas E.

    2010-11-19

    Ln{sub 2}YbCuQ{sub 5} (Ln = La, Ce, Pr, Nd, Sm; Q = S, Se) have been prepared by direct reaction of the elements in Sb{sub 2}Q{sub 3} (Q = S, Se) fluxes at 900 °C. All compounds have been characterized by single-crystal X-ray diffraction methods and they are isotypic. The structure of Ln{sub 2}YbCuQ{sub 5} consists of one-dimensional {sup 1}{sub {infinity}} [YbCuQ{sub 5}]{sup 6-} ribbons extending along the b axis that are connected by larger Ln{sup 3+} ions. Each ribbon is constructed from two single chains of [YbQ{sub 6}] octahedra with one double chain of [CuQ{sub 5}] trigonal bipyramids in the middle. All three chains connect with each other via edge-sharing. There are two crystallographically unique Ln atoms, one octahedral Yb site, and two disordered Cu positions inside of distorted Q{sub 5} trigonal bipyramids. Both Ln atoms are surrounded by eight Q atoms in bicapped trigonal prisms. The magnetic properties of Ln{sub 2}YbCuQ{sub 5} have been characterized using magnetic susceptibility and heat capacity measurements, while their optical properties have been explored using UV-vis-NIR diffuse reflectance spectroscopy. Cesub 2}YbCuSe{sub 5}, La{sub 2}YbCuS{sub 5}, Ce{sub 2}YbCuS{sub 5}, and Pr{sub 2}YbCuS{sub 5} are Curie-Weiss paramagnets. La{sub 2}YbCuSe{sub 5} and Nd{sub 2}YbCuS{sub 5} show evidence for short-range antiferromagnetic ordering at low temperatures. Sm{sub 2}YbCuS{sub 5} shows magnetic ordering at 5.9 K, followed by negative magnetization at low external fields. The band gaps of La{sub 2}YbCuSe{sub 5}, Ce{sub 2}YbCuSe{sub 5}, La{sub 2}YbCuS{sub 5}, Ce{sub 2}YbCuS{sub 5}, Pr{sub 2}YbCuS{sub 5}, Nd{sub 2}YbCuS{sub 5},and Sm{sub 2}YbCuS{sub 5} are 1.15 eV, 1.05 eV, 1.45 eV, 1.37 eV, 1.25 eV, 1.35 eV, and 1.28 eV respectively.

  10. Urinary kynurenic and xanthurenic acids of the dog before and after the injection of a convulsive dose of 1,1-dimethylhydrazine 

    E-Print Network [OSTI]

    Dixon, Dock Franklin

    1965-01-01

    OF SCI~r!CE Janu"=ry 196/ Ea. ]or Suspect ? T' ysics GHOIPZII AIID STUDY'" OF, ALIIS~ OF iLL&IG'PIOUS OXIDE TI:8 s'~ s i' oass ~, Dixon A??x'cvsci '. s i o st "1B n(I cont sn'L o?; ( nairnan oi' Co. -. z:. it, tso -. nd. ':s . ~'. of Dc -, '"tnsnt... * 81 f ilgGl'f BCti JQfi 8 C-'-L31CiA fL'LBQ GCQX JGQB JL fi L82 GCB t '3GLL t. , " 8 . 888f Gll Gf m? 'L884 8 il f L 8 Cr~~' 8'i 81 V;: el" 8 One PlLLQB G ' Pt 88!8 "'='"8 488lil GL'i 8818886 '; f ' ?8 l 88g&C'5 "i Q ' 'iB PL'. ?'iBCBL. , G g'f, L'8...

  11. The World of Dark Shadows Issue 19 

    E-Print Network [OSTI]

    Multiple Contributors

    1978-01-01

    '111£ ill rId of Dl1rJ{ ShadoUls 'ThOy£f Douid - "In his mEmory." VolumE no.l9 wl,r .orlll (Of Dark t}~nllCluts ~-October, 1978 , h P-entagrarn Publ i cat i on. Bi monthly­ fanzine / fan club. Sl.50 per issue; 3 f or J4.50; ( f or i9...:00 or make your own subscription. I From Kathy Resch, PO Box 2262 l1ission Sea., Santa Cl a r a, Ce;. 950~. ' Writers this issue: Barb Fi st er-Liltz, Geoffrey Hamell, Li Gsa Hoffman, Kathleen Resch, Marcy Robin, Sandy Smith, J eff Thompson...

  12. Novel CeO2-based Screen-Printed Potentiometric Electrodes for pH monitoring S. Betelu1*

    E-Print Network [OSTI]

    Boyer, Edmond

    in Europe to isolate and store radioactive waste. In France, the Callovo-Oxfordian formation (COx) is a possible candidate for nuclear waste storage. This work investigates the applicability of CeO2-based oxides or are anticipated in the COx formation during its evolution as radioactive waste repository due mainly

  13. A study of the breeding structure of the Aberdeen-Angus herd of the Agricultural and Mechanical College of Texas from 1906 to 1947 

    E-Print Network [OSTI]

    Wheat, John David

    1951-01-01

    SLrsg hy- 1 ' p rsr1ge of Ja gags ~hich ~ . e" a B Berrsai1'Outing mal~as for the t other sires ~ 1 his pal1ge 4a 8 bshe &d sj @lily QiehC geste'NOR poriocls whMoas the 9'Mls' four sires (based vtl GXs 50i FFi alai 6 geststio@s) ha@ ranges ef 8...~ ~ ~ ~ s i ~ ~ ~ ~ hibjiogx s, " hy Ae~o&1odgeesnt s 12 28 ~ . 30 32 3g ~ FiOVRRS 1a Xe544g Rlbl'ecting Coeffioi@llt Ce@) 0 t l ~ ~ I 4 4 ~ 0 0 'N 13 Teagle ~ Q@ Relationship {6@+1@@ p o s t ~ ~ ~ 'i ~ ~ ~ ~ s y 15 Yeaj. 'ly Gelvtng 1+ter'ee3. sxs...

  14. CliniCal anesthesia ConferenCe 2015

    E-Print Network [OSTI]

    Thompson, Michael

    Can-am CliniCal anesthesia ConferenCe 2015 T H I r T Y - T H I r D a n n u a l Conference 2015 Please FaX, Mail or e-Mail: CMe aDMinistRatOR Continuing Health Sciences education mcmaster conferences: yes no www.twitter.com/mcmaster_chse http://ca.linkedin.com/pub/mcmaster-continuing- health

  15. 1995 CECS C&E Tables

    U.S. Energy Information Administration (EIA) Indexed Site

    15. Season of Peak Electricity Demand, Number of Buildings and Floorspace, 1995 Table 16. Electricity Consumption and Conditional Energy Intensity by Season of Peak Demand, 1995...

  16. GE Appliances: Proposed Penalty (2010-CE-2113)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that General Electric Appliances failed to certify a variety of dehumidifiers as compliant with the applicable energy conservation standards.

  17. Acme Kitchenettes: Proposed Penalty (2011-CE-1406)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Acme Kitchenettes Corp. failed to certify a variety of refrigerators as compliant with the applicable energy conservation standards.

  18. Optimum concentration of reconstituted buttermilk as a diluter for bovine semen 

    E-Print Network [OSTI]

    Pati, Nityananda

    1956-01-01

    fram co~~c8san ef e, "g yolky" rate c-d recc-c+'tntsd (1. ". :j )" (IRKED: s of po"c8-tc. -e cf GQQTBN motile dnI" I~?" ' in storage st ~. ) Fi~ce of Var1cttcn J3c~- cs cf . recdom Mean . . :-, :. ore Total ~leo Yo1h 01tre+e vs Bu termi13c c'0 3... tbs baiting ef this tarsi , d8bnesloggeonb is else Als te tbe Osiris Rksbsndpf T)opsrtssnt fer ssppa~ arteriole seel in this @cogent ang te the Genetics Dspartssnt far sig is the ststistissl intsrpreletiea, X sa else gretel@ to%re p. Qasgsr (ingle...

  19. Nanostructured LaF{sub 3}:Ce Quantum Dot Nuclear Radiation Detector

    SciTech Connect (OSTI)

    Guss, P., Guise, R., Reed, M., Mukhopadhyay, S., Yuan, D.

    2010-11-01

    Many radioactive isotopes have low energy X-rays and high energy gamma rays of interest for detection. The goal of the work presented was to demonstrate the possibility of measuring both low-energy X-rays and relatively high-energy gamma rays simultaneously using the nano-structured lanthanum bromide, lanthanum fluoride, or cerium bromide. The key accomplishments of the project was the building and acquisition of the LaF3:Ce nanocomposite detectors. Nanocomposite detectors are sensitive to {gamma}’s as well as n’s and X-rays.

  20. Approved Module Information for CE1102, 2014/5 Module Title/Name: Organic Chemistry for Engineers Module Code: CE1102

    E-Print Network [OSTI]

    Neirotti, Juan Pablo

    Approved Module Information for CE1102, 2014/5 Module Title/Name: Organic Chemistry for Engineers Module Code: CE1102 School: Engineering and Applied Science Module Type: Standard Module New Module chemistry. Part 2: Introduction to Laboratory Skills To enable the student to develop good practical skills

  1. Approved Module Information for CE4014, 2014/5 Module Title/Name: Advanced Reaction Engineering II Module Code: CE4014

    E-Print Network [OSTI]

    Neirotti, Juan Pablo

    Approved Module Information for CE4014, 2014/5 Module Title/Name: Advanced Reaction Engineering II Module Code: CE4014 School: Engineering and Applied Science Module Type: Standard Module New Module? No Module Credits: 10 Module Management Information Module Leader Name Feroz Kabir Email Address kabirf

  2. Stiebel Eltron: Proposed Penalty (2010-CE-1711)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Stiebel Eltron, Inc. failed to certify a variety of water heaters as compliant with the applicable energy conservation standards.

  3. Refrigerator Manufacturers: Proposed Penalty (2013-CE-5341)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Refrigerator Manufacturers, LLC failed to certify a variety of walk-in cooler or freezer components as compliant with the applicable energy conservation standards.

  4. Lumiram Electric: Proposed Penalty (2010-CE-1014)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Lumiram Electric Corporation failed to certify a variety of incandescent reflector lamps as compliant with the applicable energy conservation standards.

  5. Keystone: Proposed Penalty (2013-CE-2601)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Keystone Technologies, LLC failed to certify a variety of fluorescent lamp ballasts as compliant with the applicable energy conservation standards.

  6. BSH: Proposed Penalty (2013-CE-2001)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that BSH Home Appliances Corp. failed to certify a variety of residential clothes washers as compliant with the applicable energy/water conservation standards.

  7. Hayward Industries: Proposed Penalty (2010-CE-1110)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Hayward Industries, Inc. failed to certify a variety of pool heaters as compliant with the applicable energy conservation standards.

  8. Heat Controller: Proposed Penalty (2011-CE-1507)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Heat Controller, Inc. failed to certify a variety of room air conditioners as compliant with the applicable energy conservation standards.

  9. Act One: NPCP (2013-CE-49001)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Act One Communications, Inc. failed to certify a variety of traffic signal modules and pedestrian modules as compliant with the applicable energy conservation standards.

  10. Hisense USA: Proposed Penalty (2010-CE-1211)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Hisense USA Corp. failed to certify a variety of residential refrigerators, refrigerator-freezers, and freezers as compliant with the applicable energy conservation standards.

  11. Course No.: CE 511 Graduate Student

    E-Print Network [OSTI]

    Ervin, Elizabeth K.

    the frequencies of a bent-pile system using SAP2000 To see the mode shapes of the system in SAP2000 #12 of that project which satisfies both my course requirement and research goal #12;Bent-Pile System Pile Cap Piles I-55 Intermediate Bent System #12;Defining Section Properties in SAP2000 Pile Cap Section Pile Section

  12. CIVIL & ENVIRONMENTAL CE / ENE OVERVIEW PROGRAMS AVAILABLE

    E-Print Network [OSTI]

    Rohs, Remo

    , industrial facilities and addressing the problems of ground water and air pollution as well as industrial with the treatment and proper disposal of environmental pollutants and developing techniques for improving our air. Air, water, and soil pollution control technologies; pollution prevention strategies. Design of simple

  13. Topaz: Proposed Penalty (2014-CE-35005)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Topaz Lighting Corp. failed to certify a variety of basic models of medium base compact fluorescent lamps, general service fluorescent lamps, and illuminated exit signs as compliant with the applicable energy conservation standards.

  14. FW5B.4.pdf FiO/LS 2014 OSA 2014 Electric Field Detection Using an Electro-optic Polymer

    E-Print Network [OSTI]

    Chen, Ray

    in electromagnetic pulse detection, process control, RF IC testing, and so on [1]. Traditional electronic EMF sensorsFW5B.4.pdf FiO/LS 2014 © OSA 2014 Electric Field Detection Using an Electro-optic Polymer Refilled-crystal waveguide modulator driven by a bowtie-antenna. The minimum detectable electric field is measured to be 2.5V

  15. 1995 CECS C&E Tables

    U.S. Energy Information Administration (EIA) Indexed Site

    (3 pages, 20 kb) CONTENTS PAGES Table 19. Distribution of Peak Watts per Square Foot and Load Factors, 1995 These data are from the 1995 Commercial Buildings Energy...

  16. 1995 CECS C&E Tables

    U.S. Energy Information Administration (EIA) Indexed Site

    pages, 95 kb) CONTENTS PAGES Table 3. Consumption for Sum of Major Fuels, 1995 Table 10. Electricity Consumption and Expenditure Intensities, 1995 Table 21. Natural Gas...

  17. 1995 CECS C&E Tables

    U.S. Energy Information Administration (EIA) Indexed Site

    and Gross Energy Intensity by Census Region for Sum of Major Fuels, 1995 Table 11. Electricity Consumption and Conditional Energy Intensity by Census Region, 1995 Table 22....

  18. 1995 CECS C&E Tables

    U.S. Energy Information Administration (EIA) Indexed Site

    Major Fuel, 1995 Building Characteristics RSE Column Factor: All Buildings Total Energy Consumption (trillion Btu) Primary Electricity (trillion Btu) RSE Row Factor Number of...

  19. 1995 CECS C&E Tables

    U.S. Energy Information Administration (EIA) Indexed Site

    and Gross Energy Intensity by Year Constructed for Sum of Major Fuels, 1995 Table 14. Electricity Consumption and Conditional Energy Intensity by Year Constructed, 1995 Table...

  20. 1995 CECS C&E Tables

    U.S. Energy Information Administration (EIA) Indexed Site

    pages, 95 kb) CONTENTS PAGES Table 4. Expenditures for Sum of Major Fuels, 1995 Table10. Electricity Consumption and Expenditure Intensities, 1995 Table 21. Natural Gas...

  1. 1995 CECS C&E Tables

    U.S. Energy Information Administration (EIA) Indexed Site

    and Gross Energy Intensity by Building Size for Sum of Major Fuels, 1995 Table13. Electricity Consumption and Conditional Energy Intensity by Building Size, 1995 Table 24....

  2. Royal Centurion: Proposed Penalty (2012-CE-3608)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Royal Centurion, Inc., failed to certify two dehumidifiers as compliant with the energy conservation standards.

  3. 1995 CECS C&E Tables

    U.S. Energy Information Administration (EIA) Indexed Site

    Category (6 pages, 36 kb) CONTENTS PAGES Table 17. Peak Electricity Demand Category, Number of Buildings, 1995 Table 18. Peak Electricity Demand Category, Floorspace, 1995 These...

  4. Engineered Solutions: Proposed Penalty (2010-CE-2112)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Engineered Solutions, Inc. failed to certify a dehumidifier as compliant with the applicable energy conservation standards.

  5. Whirlpool: Proposed Penalty (2014-CE-21010)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Whirlpool Corporation failed to certify residential clothes dryers as compliant with the applicable energy conservation standards.

  6. civil & environmental ce / ene overview programs available

    E-Print Network [OSTI]

    Rohs, Remo

    , industrial facilities -- and addressing the problems of ground water and air pollution as well as industrial with the treatment and proper disposal of environmental pollutants and developing techniques for improving our air, water and soil. Innovative research areas include civil infrastructure, air pollution remedies

  7. CE 4990 -Construction Scheduling Spring Fling

    E-Print Network [OSTI]

    contract award, you have submitted your master schedule which shows completion in 28 working days. At the time of Notice to Proceed, owner informs you that he has redesigned the Int. Parts. (Act 3), the Ext that the additional complexity will: · Require 6 additional days of work on the Int. Parts., · Require 9 additional

  8. Prizer-Painter: Order (2014-CE-23005)

    Broader source: Energy.gov [DOE]

    DOE ordered Prizer-Painter Stove Works, Inc. to pay a $8,000 civil penalty after finding Prizer-Painter had failed to certify that certain models of cooking products comply with the applicable energy conservation standards.

  9. GE Appliances: Order (2010-CE-2113)

    Broader source: Energy.gov [DOE]

    DOE issued an Order after entering into a Compromise Agreement with General Electric Appliances after finding GE Appliances had failed to certify that certain models of dehumidifiers comply with the applicable energy conservation standards.

  10. Euro Chef USA: Order (2014-CE-23004)

    Broader source: Energy.gov [DOE]

    DOE ordered Euro Chef USA Inc. to pay a $8,000 civil penalty after finding Euro Chef USA had failed to certify that certain models of cooking products comply with the applicable energy conservation standards.

  11. Elmira Stove Works: Order (2011-CE-1407)

    Broader source: Energy.gov [DOE]

    DOE ordered Elmira Stove Works to pay a $6,000 civil penalty after finding Elmira Stove Works had failed to certify that certain models of refrigerator-freezers comply with the applicable energy conservation standard.

  12. Stiebel Eltron: Order (2010-CE-1711)

    Broader source: Energy.gov [DOE]

    DOE ordered Stiebel Eltron, Inc. to pay a $5,000 civil penalty after finding Stiebel Eltron had failed to certify that certain models of water heaters comply with the applicable energy conservation standards.

  13. Compression Testing Machine in CE Dept. 

    E-Print Network [OSTI]

    Unknown

    2011-08-17

    The Psychrometric Testing Facility at the Riverside Energy Efficiency Laboratory at Texas AandM University has not been operational for several years. The goal of this project was to restore the testing facility to a fully ...

  14. Amerikooler: Proposed Penalty (2013-CE-5307)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Amerikooler, Inc. failed to certify walk-in cooler or freezer (WICF) components as compliant with the energy conservation standards.

  15. Cospolich Refrigerator: Proposed Penalty (2013-CE-5314)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Cospolich Refrigerator Co, Inc. failed to certify walk-in cooler or freezer components as compliant with the energy conservation standards.

  16. Ramblewood Green: Order (2014-CE-23017)

    Broader source: Energy.gov [DOE]

    DOE ordered Ramblewood Green Ltd. to pay a $8,000 civil penalty after finding Ramblewood Green had failed to certify that certain models of cooking products comply with the applicable energy conservation standards.

  17. Royal Centurion: Order (2012-CE-3608)

    Broader source: Energy.gov [DOE]

    DOE ordered Royal Centurion, Inc., to pay a $8,000 civil penalty after finding Royal Centurion had failed to certify that certain models of dehumidifiers comply with the applicable energy conservation standards.

  18. Lumiram Electric: Order (2010-CE-1014)

    Broader source: Energy.gov [DOE]

    DOE issued an Order and entered into a Compromise Agreement with Lumiram Electric Corporation after finding Lumiram Electric had failed to certify that certain models of incandescent reflector lamps comply with the applicable energy conservation standards.

  19. Viking Range: Order (2014-CE-23014)

    Broader source: Energy.gov [DOE]

    DOE ordered Viking Range, LLC to pay a $8,000 civil penalty after finding Viking Range had failed to certify that certain models of cooking products comply with the applicable energy conservation standards.

  20. American Range: Order (2014-CE-23006)

    Broader source: Energy.gov [DOE]

    DOE ordered American Range Corporation to pay a $8,000 civil penalty after finding American Range had failed to certify that certain models of cooking products comply with the applicable energy conservation standards.

  1. USA Manufacturing: Order (2013-CE-5336)

    Broader source: Energy.gov [DOE]

    DOE ordered USA Manufacturing to pay a $8,000 civil penalty after finding USA Manufacturing had failed to certify that certain models of walk-in cooler and freezer components comply with the applicable energy conservation standards.

  2. Dade Engineering: Proposed Penalty (2013-CE-5316)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Dade Engineering Corp. failed to certify walk-in cooler or freezer components as compliant with the energy conservation standards.

  3. Dade Engineering: Order (2013-CE-5316)

    Broader source: Energy.gov [DOE]

    DOE ordered Dade Engineering Corp. to pay a $8,000 civil penalty after finding Dade Engineering had failed to certify that certain models of walk-in cooler and freezer (WICF) components comply with the applicable energy conservation standards.

  4. Acme Kitchenettes: Order (2011-CE-1406)

    Broader source: Energy.gov [DOE]

    DOE ordered Acme Kitchenettes Corp. to pay a $6,000 civil penalty after finding Acme Kitchenettes had failed to certify that certain models of refrigerators comply with the applicable energy conservation standards.

  5. Hayward Industries: Order (2010-CE-1110)

    Broader source: Energy.gov [DOE]

    DOE ordered Hayward Industries, Inc. to pay a $10,000 civil penalty after finding Hayward Industries had failed to certify that certain models of pool heaters comply with the applicable energy conservation standards.

  6. Heat Controller: Order (2011-CE-1507)

    Broader source: Energy.gov [DOE]

    DOE ordered Heat Controller, Inc. to pay a $6,000 civil penalty after finding Heat Controller had failed to certify that certain models of room air conditioners comply with the applicable energy conservation standards.

  7. Midea Washing Appliance: Order (2011-CE-1903)

    Broader source: Energy.gov [DOE]

    DOE ordered Midea Washing Appliance Mfg. Co., Ltd. to pay a $6,000 civil penalty after finding Midea Washing Appliance had failed to certify that certain models of dishwashers comply with the applicable energy conservation standards.

  8. Excellence Opto: Order (2013-CE-49002)

    Broader source: Energy.gov [DOE]

    DOE ordered Excellence Opto, Inc. to pay a $8,000 civil penalty after finding Excellence Opto had failed to certify that certain models of traffic signal modules and pedestrian modules comply with the applicable energy conservation standards.

  9. USA Manufacturing: Proposed Penalty (2013-CE-5336)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that USA Manufacturing failed to certify walk-in cooler or freezer components as compliant with the energy conservation standards.

  10. Hisense USA: Order (2010-CE-1211)

    Broader source: Energy.gov [DOE]

    DOE issued an Order after entering into a Compromise Agreement with Hisense USA Corp. after finding Hisense USA had failed to certify that certain models of residential refrigerators, refrigerator-freezers, and freezers comply with the applicable energy conservation standards.

  11. International Refrigeration: Proposed Penalty (2012-CE-1510)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that International Refrigeration Products failed to certify a various room air conditioners as compliant with the applicable energy conservation standards.

  12. R-Cold: Order (2013-CE-5354)

    Broader source: Energy.gov [DOE]

    DOE ordered R-Cold, Inc. to pay a $8,000 civil penalty after finding R-Cold had failed to certify that any basic models of walk-in cooler or freezer components comply with the applicable energy conservation standards.

  13. Nordyne: Order (2010-CE-01/0210)

    Broader source: Energy.gov [DOE]

    DOE ordered Nordyne, LLC d/b/a Garrison Heating and Cooling Products to pay a $10,000 civil penalty after finding Nordyne had failed to certify that certain models of central air conditioners and central air conditioning heat pumps comply with the applicable energy conservation standard.

  14. American Cooler Technologies: Order (2013-CE-5305)

    Broader source: Energy.gov [DOE]

    DOE ordered American Cooler Technologies to pay a $8,000 civil penalty after finding American Cooler Technologies had failed to certify that certain models of walk-in coolers or freezers (WICF) components comply with the applicable energy conservation standards.

  15. Microsoft Word - hCE1.doc

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration wouldMass map shines light on77 PAGE OFDetection ofOctober 28,CatastrophictheJuly U.S.May

  16. Oak Ridge Field O%ce

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE-SessionsSouthReport for the Weldon Spring,7=cr5rnP 7694 i+lJNewS e TAugustDOC F

  17. California Ethanol Power CE P | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX E LISTStar Energy LLC JumpBiossenceBrunswick,Calendar Home > CommunityHelp toPower CE

  18. EST-CE QU'ON VOlT ATRAVERS UN MICROSCOPE? '

    E-Print Network [OSTI]

    Aubin, David

    'aimable autonsatJon de1auteur etde Blackwell Publishing. EST-CE QU'ON VOlT ATRAVERS UN MICROSCOPE? 239 Les

  19. Identification and analysis of residues contained on b fi a loops of the

    E-Print Network [OSTI]

    Fülöp, Vilmos

    Nacional de Geno´ mica para la Biodiversidad (Langebio), CINVESTAV-IPN, Km 9.6 Libramiento Norte, Carretera Diversity Laboratory, Laboratorio Nacional de Geno´ mica para la Biodiversidad (Langebio), CINVESTAV-IPN, Km

  20. Implications of Wide-Area Geographic Diversity for Short- Term Variability of Solar Power

    E-Print Network [OSTI]

    Mills, Andrew

    2010-01-01

    Solar Energy Technologies Program and O?ce of ElectricitySolar Energy Technologies Program) and by the O?ce of Electricity