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  1. Benin | National Nuclear Security Administration

    National Nuclear Security Administration (NNSA)

    Benin NNSA Supports IAEA Regional Training in Zambia on Management Practices for Uranium The International Atomic Energy Agency (IAEA), European Commission and National Nuclear Security Administration (NNSA) co-sponsored a training course in Livingstone, Zambia this week focusing on good management practices for uranium ore concentrate (UOC). The Zambia Radiation Protection Authority

  2. Benin: World Oil Report 1991

    SciTech Connect (OSTI)

    Not Available

    1991-08-01

    This paper reports Ashland discovered additional oil reserves deeper than current production in Seme, Benin's only oil field. The field is on a steep decline, producing as little as 2,500 bopd, down from 7,671 bopd in 1984. In an effort to restart offshore exploration, three offshore blocks have been designated. Hardy Oil and Gas (UK) Ltd. has since acquired 20% interest in Blocks 1 and 2 from International Petroleum Ltd. (IPL). IPL completed seismic work during 1990 that identified two large channel prospects similar to those that produce offshore elsewhere in West Africa. The first well is expected in 1991.

  3. Benin: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    Country Profile Name Benin Population 9,983,884 GDP 7,429,000,000 Energy Consumption 0.05 Quadrillion Btu 2-letter ISO code BJ 3-letter ISO code BEN Numeric ISO...

  4. BN-350 "Mirror System".

    SciTech Connect (OSTI)

    Thornton, A. L.; Halbig, J. K.

    2004-01-01

    The BN-350 Unattended Monitoring System plays an important role for the Safeguards Department of the International Atomic Energy Agency (IAEA). In 1998, the Los Alamos National Laboratory, in conjunction with the IAEA and sponsored by the US Department of Energy, designed and installed an integrated multi-instrument safeguards system at the BN-350 reactor in Aktau, Kazakhstan, to monitor spent-fuel and blanket assembly conditioning and canning activities. The purpose of the system was to provide effective safeguards at this facility while reducing the manpower load on the IAEA. The system is composed of many individual nondestructive analysis and surveillance components, each having a unique function and working together to provide fully unattended measurement of spent-fuel assemblies. The BN-350 ''Mirror System'' was built to provide a similar system with like components at the IAEA Headquarters in Vienna to facilitate analysis and/or simulation of problems that might occur in the field and for training inspectors and other technical staff in preparation for their work in the field. In addition, the system is used to test new equipment and qualify new or modified software. This paper describes the main components of the Mirror System, how the components are integrated, and how the Mirror System has benefited the IAEA.

  5. Benin: Increased Access to Modern Energy Project | Open Energy...

    Open Energy Info (EERE)

    Bank1 The objective of the Increased Access to Modern Energy Project is to improve reliability, efficiency, and access to modern energy services in Benin. There are three...

  6. BN-NTS-05-0025

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

    BN-NTS-05-0025 2004 Nevada Test Site Waste Management Monitoring Report Area 3 and Area 5 Radioactive Waste Management Sites BN-NTS-05-0025 Nevada Test Site 2004 Waste Management ...

  7. HR Public meeting

    ScienceCinema (OSTI)

    None

    2011-10-06

    Cher(e)s collègues, En collaboration avec le Département HR, le Directeur général a le plaisir de vous convier à une réunion publique qui se tiendra le vendredi 25 juin 2010 à 9h30 dans l?Amphithéâtre principal (Bâtiment 500)*. Un café d?accueil y sera servi à partir de 9h. Cette réunion abordera les thèmes suivants : ? Valeurs de l?Organisation (Directeur général) ? Code de Conduite (Directeur général / Anne-Sylvie Catherin) ? Création du nouveau rôle d?Ombudsperson (Vincent Vuillemin) Ces présentations seront suivies d?une séance de questions-réponses. Nous espérons vous retrouver nombreux le 25 juin ! Meilleures salutations, Anne-Sylvie Catherin Chef du Département des Ressources humaines *Cette réunion sera retransmise simultanément dans l?Amphithéâtre BE de Prévessin (Bâtiment 864) et également disponible à l?adresse suivante : http://webcast.cern.ch -------------------------------------------------------- Dear colleagues, In collaboration with HR Department, the Director-General would like to invite you to an information meeting which will be held on Friday 25 June 2010 at 9:30 am in the Main Auditorium (Building 500)*. A welcome coffee will be available from 9:00 am. During this meeting, information will be given about: ? Organization?s values (Director-General) ? Code of Conduct (Director-General / Anne-Sylvie Catherin) ? New Ombudsperson role (Vincent Vuillemin) These presentations will be followed by a questions & answers session. We look forward to seeing you all on 25 June! Best regards, Anne-Sylvie Catherin Head, Human Resources Department *This meeting will be simultaneously retransmitted in BE Auditorium (Building 864) and available at the following address: http://webcast.cern.ch.

  8. HR Public meeting

    ScienceCinema (OSTI)

    None

    2011-10-06

    Cher(e)s collègues, En collaboration avec le Département HR, le Directeur général a le plaisir de vous convier à une réunion publique qui se tiendra le vendredi 25 juin 2010 à 9h30 dans l?Amphithéâtre principal (Bâtiment 500)*. Un café d?accueil y sera servi à partir de 9h. Cette réunion abordera les thèmes suivants : ? Valeurs de l?Organisation (Directeur général) ? Code de Conduite (Directeur général / Anne-Sylvie Catherin) ? Création du nouveau rôle d?Ombudsperson (Vincent Vuillemin) Ces présentations seront suivies d?une séance de questions-réponses. Nous espérons vous retrouver nombreux le 25 juin ! Meilleures salutations, Anne-Sylvie Catherin Chef du Département des Ressources humaines *Cette réunion sera retransmise simultanément dans l?Amphithéâtre BE de Prévessin (Bâtiment 864) et également disponible à l?adresse suivante : http://webcast.cern.ch -------------------------------------------------------- Dear colleagues, In collaboration with HR Department, the Director-General would like to invite you to an information meeting which will be held on Friday 25 June 2010 at 9:30 am in the Main Auditorium (Building 500)*. A welcome coffee will be available from 9:00 am. During this meeting, information will be given about: ? Organization?s values (Director-General) ? Code of Conduct (Director-General / Anne-Sylvie Catherin) ? New Ombudsperson role (Vincent Vuillemin) These presentations will be followed by a questions & answers session. We look forward to seeing you all on 25 June! Best regards, Anne-Sylvie Catherin Head, Human Resources Department *This meeting will be simultaneously retransmitted in BE Auditorium (Building 864) and available at the following address: http://webcast.cern.ch.

  9. hr | National Nuclear Security Administration

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

    hr Contractor Human Resources The Contractor Human Resources mission is to provide expert advice and assistance to our customers in order to ensure quality Contractor Human ...

  10. hr

    National Nuclear Security Administration (NNSA)

    4%2A en Management and Budget http:www.nnsa.energy.govaboutusouroperationsmanagementandbudget

  11. hr

    National Nuclear Security Administration (NNSA)

    4%2A en Management and Budget http:nnsa.energy.govaboutusouroperationsmanagementandbudget

    P...

  12. HR

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

    Confined Space Program, Policy 2010-001 HQ Confined Space Program, Policy 2010-001 Confinmed Space Entry Program for Department of Energy (DOE) Headquarters, Office of Safety, Health and Security. HQ Confined Space Program, Policy 2010-001 (1.17 MB) More Documents & Publications F-Tank Farm Performance Assessment, Rev 1 Federal Acquisition Circular 2005-52 FAIR Act Inventory - FY12

    EMS Policy HQ EMS Policy Office of Administration Environmental Management System (EMS) Policy for Managing

  13. About the HR Team | Department of Energy

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

    HR Team About the HR Team The Human Resource Team is responsible for human capital policy, human capital and organizational management, and human capital management initiatives. ...

  14. Electrical transport properties of (BN)-rich hexagonal (BN)C semiconductor alloys

    SciTech Connect (OSTI)

    Uddin, M. R.; Doan, T. C.; Li, J.; Lin, J. Y.; Jiang, H. X.; Ziemer, K. S.

    2014-08-15

    The layer structured hexagonal boron nitride carbon semiconductor alloys, h-(BN)C, offer the unique abilities of bandgap engineering (from 0 for graphite to ∼6.4 eV for h-BN) and electrical conductivity control (from semi-metal for graphite to insulator for undoped h-BN) through alloying and have the potential to complement III-nitride wide bandgap semiconductors and carbon based nanostructured materials. Epilayers of (BN)-rich h-(BN){sub 1-x}(C{sub 2}){sub x} alloys were synthesized by metal-organic chemical vapor deposition (MOCVD) on (0001) sapphire substrates. Hall-effect measurements revealed that homogeneous (BN)-rich h-(BN){sub 1-x}(C{sub 2}){sub x} alloys are naturally n-type. For alloys with x = 0.032, an electron mobility of about 20 cm{sup 2}/Vs at 650 °K was measured. X-ray photoelectron spectroscopy (XPS) was used to determine the chemical composition and analyze chemical bonding states. Both composition and chemical bonding analysis confirm the formation of alloys. XPS results indicate that the carbon concentration in the alloys increases almost linearly with the flow rate of the carbon precursor (propane (C{sub 3}H{sub 8})) employed during the epilayer growth. XPS chemical bonding analysis showed that these MOCVD grown alloys possess more C-N bonds than C-B bonds, which possibly renders the undoped h-(BN){sub 1-x}(C{sub 2}){sub x} alloys n-type and corroborates the Hall-effect measurement results.

  15. ARM SGP and BN AERI Instrument Diagnostic Comparison and Preliminary...

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

    by Bechtel-Nevada (BN). Analysis produced the following preliminary results: (1) sky radiance data collected by both instruments are compatible and consistent and both...

  16. Réunion publique HR

    ScienceCinema (OSTI)

    None

    2011-10-06

    Chers Collègues,Je me permets de vous rappeler qu'une réunion publique organisée par le Département HR se tiendra aujourd'hui:Vendredi 30 avril 2010 à 9h30 dans l'Amphithéâtre principal (café offert dès 9h00).Durant cette réunion, des informations générales seront données sur:le CERN Admin e-guide, qui est un nouveau guide des procédures administratives du CERN ayant pour but de faciliter la recherche d'informations pratiques et d'offrir un format de lecture convivial;le régime d'Assurance Maladie de l'Organisation (présentation effectuée par Philippe Charpentier, Président du CHIS Board) et;la Caisse de Pensions (présentation effectuée par Théodore Economou, Administrateur de la Caisse de Pensions du CERN).Une transmission simultanée de cette réunion sera assurée dans l'Amphithéâtre BE de Prévessin et également disponible à l'adresse suivante: http://webcast.cern.chJe me réjouis de votre participation!Meilleures salutations,Anne-Sylvie CatherinChef du Département des Ressources humaines__________________________________________________________________________________Dear Colleagues,I should like to remind you that a plublic meeting organised by HR Department will be held today:Friday 30 April 2010 at 9:30 am in the Main Auditorium (coffee from 9:00 am).During this meeting, general information will be given about:the CERN Admin e-guide which is a new guide to the Organization's administrative procedures, drawn up to facilitate the retrieval of practical information and to offer a user-friendly format;the CERN Health Insurance System (presentation by Philippe Charpentier, President of the CHIS Board) and;the Pension Fund (presentation by Theodore Economou, Administrator of the CERN Pension Fund).A simultaneous transmission of this meeting will be broadcast in the BE Auditorium at Prévessin and will also be available at the following address. http://webcast.cern.chI look forward to your participation!Best regards,Anne-Sylvie Catherin

  17. Side-gate modulation effects on high-quality BN-Graphene-BN nanoribbon capacitors

    SciTech Connect (OSTI)

    Wang, Yang; Chen, Xiaolong; Ye, Weiguang; Wu, Zefei; Han, Yu; Han, Tianyi; He, Yuheng; Cai, Yuan; Wang, Ning

    2014-12-15

    High-quality BN-Graphene-BN nanoribbon capacitors with double side-gates of graphene have been experimentally realized. The double side-gates can effectively modulate the electronic properties of graphene nanoribbon capacitors. By applying anti-symmetric side-gate voltages, we observed significant upward shifting and flattening of the V-shaped capacitance curve near the charge neutrality point. Symmetric side-gate voltages, however, only resulted in tilted upward shifting along the opposite direction of applied gate voltages. These modulation effects followed the behavior of graphene nanoribbons predicted theoretically for metallic side-gate modulation. The negative quantum capacitance phenomenon predicted by numerical simulations for graphene nanoribbons modulated by graphene side-gates was not observed, possibly due to the weakened interactions between the graphene nanoribbon and side-gate electrodes caused by the Ga{sup +} beam etching process.

  18. SAP_on_HR2776_and_HR3221.pdf | Department of Energy

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

    PDF icon SAPonHR2776andHR3221.pdf More Documents & Publications Response to several FOIA requests - Renewable Energy. Roadmap for Bioenergy and Biobased Products in the United ...

  19. Diamond-cBN alloy: A universal cutting material

    SciTech Connect (OSTI)

    Wang, Pei; He, Duanwei Kou, Zili; Li, Yong; Hu, Qiwei; Xu, Chao; Lei, Li; Wang, Qiming; Wang, Liping; Zhao, Yusheng; Xiong, Lun; Liu, Jing

    2015-09-07

    Diamond and cubic boron nitride (cBN) as conventional superhard materials have found widespread industrial applications, but both have inherent limitations. Diamond is not suitable for high-speed cutting of ferrous materials due to its poor chemical inertness, while cBN is only about half as hard as diamond. Because of their affinity in structural lattices and covalent bonding character, diamond and cBN could form alloys that can potentially fill the performance gap. However, the idea has never been demonstrated because samples obtained in the previous studies were too small to be tested for their practical performance. Here, we report the synthesis and characterization of transparent bulk diamond-cBN alloy compacts whose diameters (3 mm) are sufficiently large for them to be processed into cutting tools. The testing results show that the diamond-cBN alloy has superior chemical inertness over polycrystalline diamond and higher hardness than single crystal cBN. High-speed cutting tests on hardened steel and granite suggest that diamond-cBN alloy is indeed a universal cutting material.

  20. Carbon-rich hexagonal (BN)C alloys

    SciTech Connect (OSTI)

    Uddin, M. R.; Li, J.; Lin, J. Y.; Jiang, H. X.

    2015-06-07

    Thin films of hexagonal boron nitride carbon, h-(BN){sub 1−x}(C{sub 2}){sub x}, alloys in the C-rich side have been synthesized by metal-organic chemical vapor deposition (MOCVD) on c-plane sapphire substrates. X-ray diffraction measurements confirmed single hexagonal phase of h-(BN){sub 1−x}(C{sub 2}){sub x} epilayers. Electrical transport and Raman spectroscopy measurements results revealed evidences that homogenous h-(BN){sub 1−x}(C{sub 2}){sub x} alloys with x ≥ 95% can be synthesized by MOCVD at a growth temperature of 1300 °C. The variable temperature Hall-effect measurements suggested that a bandgap opening of about 93 meV with respect to graphite has been obtained for h-(BN){sub 1−x}(C{sub 2}){sub x} with x = 0.95, which is consistent with the expected value deduced from the alloy dependence of the energy gap of homogenous h-(BN){sub 1−x}(C{sub 2}){sub x} alloys. Atomic composition results obtained from x-ray photoelectron spectroscopy measurements revealed that the carrier type in C-rich h-(BN){sub 1−x}(C{sub 2}){sub x} alloys is controlled by the stoichiometry ratio between the B and N via changing the V/III ratio during the growth. The demonstration of bandgap opening and conductivity control in C-rich h-(BN){sub 1−x}(C{sub 2}){sub x} alloys provide feasibilities for realizing technologically significant devices including infrared (IR) emitters and detectors active from near to far IR and multi-spectral IR emitters and detectors.

  1. Cleaning Cesium Radionuclides from BN-350 Primary Sodium

    SciTech Connect (OSTI)

    Romanenko, O.G.; Allen, K.J.; Wachs, D.M.; Planchon, H.P.; Wells, P.B.; Michelbacher, J.A.; Nazarenko, P.; Dumchev, I.; Maev, V.; Zemtzev, B.; Tikhomirov, L.; Yakovlev, V.; Synkov, A

    2005-04-15

    This paper reports the successful design and operation of a system to remove highly radioactive cesium from the sodium coolant of the BN-350 reactor in Aktau, Kazakhstan. As an international effort between the United States and the Republic of Kazakhstan, a cesium-trapping system was jointly designed, fabricated, installed, and successfully operated. The results are significant for a number of reasons, including (a) a significant reduction of radioactivity levels of the BN-350 coolant and reactor surfaces, thereby reducing exposure to workers during shutdown operations; (b) demonstration of scientific ideas; and (c) the engineering application of effective cesium trap deployment for commercial-sized liquid-metal reactors. About 255 300 GBq (6900 Ci) of cesium was trapped, and the {sup 137}Cs specific activity in BN-350 primary sodium was decreased from 296 MBq/kg (8000 {mu}Ci/kg) to 0.37 MBq/kg (10 {mu}Ci/kg) by using seven cesium traps containing reticulated vitreous carbon (RVC) as the cesium adsorbent. Cesium trapping was accomplished by pumping sodium from the primary circuit, passing it through a block of RVC within each trap, and returning the cleaned sodium to the primary circuit. Both to predict and to analyze the behavior of the cesium traps in the BN-350 reactor primary circuit, a model was developed that satisfactorily describes the observed results of the cesium trapping. By using this model, thermodynamic parameters, such as the heat of adsorption of cesium atoms on RVC and on internal piping surfaces of the BN-350 reactor primary circuit, -22.7 and -5.0 kJ/mole, respectively, were extracted from the experimental data.

  2. Phase stability limit of c-BN under hydrostatic and non-hydrostatic pressure conditions

    SciTech Connect (OSTI)

    Xiao, Jianwei; Du, Jinglian; Wen, Bin, E-mail: wenbin@ysu.edu.cn; Zhang, Xiangyi [State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004 (China)] [State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004 (China); Melnik, Roderick [M2NeT Lab, Wilfrid Laurier University, Waterloo25, 75 University Ave. West, Ontario, Canada N2L 3C5 (Canada)] [M2NeT Lab, Wilfrid Laurier University, Waterloo25, 75 University Ave. West, Ontario, Canada N2L 3C5 (Canada); Kawazoe, Yoshiyuki [New Industry Creation Hatchery Center, Tohoku University, 6-6-4 Aramaki-aza-Aoba, Aoba-ku, Sendai 980-8579, Japan and Institute of Thermophysics, Siberian Branch of the Russian Academy of Sciences, 1, Lavyrentyev Avenue, Novosibirsk 630090 (Russian Federation)] [New Industry Creation Hatchery Center, Tohoku University, 6-6-4 Aramaki-aza-Aoba, Aoba-ku, Sendai 980-8579, Japan and Institute of Thermophysics, Siberian Branch of the Russian Academy of Sciences, 1, Lavyrentyev Avenue, Novosibirsk 630090 (Russian Federation)

    2014-04-28

    Phase stability limit of cubic boron nitride (c-BN) has been investigated by the crystal structure search technique. It indicated that this limit is ?1000 GPa at hydrostatic pressure condition. Above this pressure, c-BN turns into a metastable phase with respect to rocksalt type boron nitride (rs-BN). However, rs-BN cannot be retained at 0 GPa owing to its instability at pressure below 250 GPa. For non-hydrostatic pressure conditions, the phase stability limit of c-BN is substantially lower than that under hydrostatic pressure conditions and it is also dramatically different for other pressure mode.

  3. H.R. 933: Consolidated and Further Continuing Appropriations...

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

    H.R. 933: Consolidated and Further Continuing Appropriations Act, 2013, Pub. L. 113-6, section 3003 H.R. 933: Consolidated and Further Continuing Appropriations Act, 2013, Pub. L. ...

  4. International Collaboration with the Shutdown of the BN-350 Reactor

    SciTech Connect (OSTI)

    J. A. Michelbacher; P.B. Wells; N. Organ; D. Wells

    2005-08-01

    Representatives from the United States and the United Kingdom discussed areas where collaboration on the shutdown of the BN-350 Reactor in Aktau, Kazakhstan would benefit not only Kazakhstan, but would also help to assure the successful shutdown of the reactor. A fundamental understanding of the basis for collaboration has been for each side to ‘add value’ to each of the project areas, rather than simply substitute for each other’s experience. This approach has brought distinct technical and management benefits to the decommissioning activities in Kazakhstan.

  5. Authorizing Legislation: HR 3979, SEC. 3039 Manhattan Project National

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

    Historical Park | Department of Energy Operational Management » History » Manhattan Project National Historical Park » Authorizing Legislation: HR 3979, SEC. 3039 Manhattan Project National Historical Park Authorizing Legislation: HR 3979, SEC. 3039 Manhattan Project National Historical Park Section 3039 from the 2015 National Defense Authorization Act, authorizing the Manhattan Project National Historical Park. HR 3979 Park Bill.docx (23.43 KB) mapr_540-108834-C_Sept 2012.pdf (4.57 MB)

  6. Direct imaging of multiple planets orbiting the star HR 8799...

    Office of Scientific and Technical Information (OSTI)

    Direct imaging of multiple planets orbiting the star HR 8799 Citation Details In-Document ... Resource Type: Journal Article Resource Relation: Journal Name: Science, vol. 322, no. ...

  7. BnNHL18A shows a localization change by stress-inducing chemical treatments

    SciTech Connect (OSTI)

    Lee, Suk-Bae; Ham, Byung-Kook; Park, Jeong Mee; Kim, Young Jin; Paek, Kyung-Hee . E-mail: khpaek95@korea.ac.kr

    2006-01-06

    The two genes, named BnNHL18A and BnNHL18B, showing sequence homology with Arabidopsis NDR1/HIN1-like (NHL) genes, were isolated from cDNA library prepared with oilseed rape (Brassica napus) seedlings treated with NaCl. The transcript level of BnNHL18A was increased by sodium chloride, ethephon, hydrogen peroxide, methyl jasmonate, or salicylic acid treatment. The coding regions of BnNHL18A and BnNHL18B contain a sarcolipin (SLN)-like sequence. Analysis of the localization of smGFP fusion proteins showed that BnNHL18A is mainly localized to endoplasmic reticulum (ER). This result suggests that the SLN-like sequence plays a role in retaining proteins in ER membrane in plants. In response to NaCl, hydrogen peroxide, ethephon, and salicylic acid treatments, the protein localization of BnNHL18A was changed. Our findings suggest a common function of BnNHL18A in biotic and abiotic stresses, and demonstrate the presence of the shared mechanism of protein translocalization between the responses to plant pathogen and to osmotic stress.

  8. Substrate-induced magnetism in BN layer: A first-principles study

    SciTech Connect (OSTI)

    Zhou, Yungang; Zu, Xiaotao T.; Gao, Fei

    2011-06-01

    We predict an accepted configuration of hexagonal boron nitride (BN) layer on Co(111) surface by first-principles calculations. The calculated adsorption energy of this configuration is around -0.51 eV with a corrugation close to 0.1 Å. Polarized spin states are induced in BN layer due to the hybridization of the BN layer with the substrate Co, which gives rise to a magnetic moment of 0.2 μB on each pair of BN. The finding of high spin polarization on the absorbed BN layer ensures a high degree of passage of the preferred spin and is important in the development of nanoscale devices for spintronics applications.

  9. Decomposition Pathway of Ammonia Borane on the Surface of nano-BN

    SciTech Connect (OSTI)

    Neiner, Doinita; Luedtke, Avery T.; Karkamkar, Abhijeet J.; Shaw, Wendy J.; Wang, Julia; Browning, Nigel; Autrey, Thomas; Kauzlarich, Susan M.

    2010-08-19

    Ammonia borane (AB) is under significant investigation as a possible hydrogen storage material. While many chemical additives have been demonstrated to have a significant positive effect on hydrogen release from ammonia borane, many provide additional complications in the regeneration cycle. Mechanically alloyed hexagonal BN (nano-BN) has been shown to facilitate the release of hydrogen from AB at lower temperature, with minimal induction time, less exothermically, and inert nano-BN may be easily removed during any regeneration of the spent AB. The samples were prepared by mechanically alloying AB with nano-BN. Raman spectroscopy indicates that the AB:nano-BN samples are physical mixtures of AB and h-BN. The release of hydrogen from AB:nano-BN mixtures as well as the decomposition products were characterized by 11B magic angle spinning (MAS) solid state NMR, TGA/DSC/MS with 15N labeled AB, and solution 11B NMR spectroscopy. The 11B MAS solid state NMR spectrum shows that diammonate of diborane (DADB) is present in the mechanically alloyed mixture, which drastically shortens the induction period for hydrogen release from AB. Analysis of the TGA/DSC/MS spectra using 15N labeled AB shows that all the borazine (BZ) produced in the reaction comes from AB and that increasing nano-BN surface area results in increased amounts of BZ. However, under high temperature, 150?C, isothermal conditions, the amount of BZ released was the same as for neat AB. High resolution transmission electron microscopy (HRTEM), selected area diffraction (SAD), and electron energy loss spectroscopy (EELS) of the initial and final nano-BN additive provide evidence for crystallinity loss but not significant chemical changes. The higher concentration of BZ observed for low temperature dehydrogenation of AB:nano-BN mixtures versus neat AB is attributed to a surface interaction that favors the formation of precursors which ultimately result in BZ. This pathway can be avoided through isothermal heating

  10. Interplay between intercalated oxygen superstructures and monolayer h -BN on Cu(100)

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

    Ma, Chuanxu; Park, Jewook; Liu, Lei; Kim, Yong-Sung; Yoon, Mina; Baddorf, Arthur P.; Gu, Gong; Li, An-Ping

    2016-08-18

    The confinement effect of intercalated atoms in van der Waals heterostructures can lead to interesting interactions between the confined atoms or molecules and the overlaying two-dimensional (2D) materials. In this paper, we report the formation of ordered Cu(100) p(2×2) oxygen superstructures by oxygen intercalation under the monolayer hexagonal boron nitride (h-BN) on Cu after annealing. By using scanning tunneling microscopy and x-ray photoelectron spectroscopy, we identify the superstructure and reveal its roles in passivating the exposed Cu surfaces, decoupling h-BN and Cu, and disintegrating h-BN monolayers. The oxygen superstructure appears as a 2D pattern on the exposed Cu surface ormore » quasi-1D stripes of paired oxygen intercalated in the interface of h-BN and Cu predominantly oriented along the moiré modulations. The oxygen superstructure is shown to etch the overlaying h-BN monolayer in a thermal annealing process. After extended annealing, the h-BN monolayer disintegrates into nanoislands with zigzag edges. Finally, we discuss the implications of these findings on the stability and oxidation resistance of h-BN and relate them to challenges in process integration and 2D heterostructures.« less

  11. HR BioPetroleum HRBP | Open Energy Information

    Open Energy Info (EERE)

    (HRBP) Place: Hawaii Product: Hawaii-based developer of technology to produce marine algae, a biodiesel feedstock. References: HR BioPetroleum (HRBP)1 This article is a stub....

  12. Property:Geothermal/CapacityBtuHr | Open Energy Information

    Open Energy Info (EERE)

    to: navigation, search This is a property of type Number. Pages using the property "GeothermalCapacityBtuHr" Showing 25 pages using this property. (previous 25) (next 25) 4 4 UR...

  13. Hanford Site - 100-HR-3-H | Department of Energy

    Office of Environmental Management (EM)

    H Hanford Site - 100-HR-3-H July 1, 2014 - 12:00pm Addthis US Department of Energy Groundwater Database Groundwater Master Report InstallationName, State: Hanford Site, WA ...

  14. Hr. Anthony V. Andolina Director, Engineering and Planning Al...

    Office of Legacy Management (LM)

    Hr. Anthony V. Andolina Director, Engineering and Planning Al-Tech Specialty Steel Ccrporatioe Post Office Bcx 91 Watervliet, New York 121C9 Dear IQ-. Andolina: The Department of ...

  15. Study of the second harmonic generation and optical rectification in a cBN crystal

    SciTech Connect (OSTI)

    Dou Qingping; Ma Haitao; Jia Gang; Chen Zhanguo; Cao Kun; Zhang Tiechen

    2007-02-28

    Cubic boron nitride (cBN) - a kind of an artificial (synthetic) crystal with the band gap of {approx}6.3 eV, which has the zinc blende structure and the 4-bar 3m symmetry, is studied. The optical rectification is obtained and the second harmonic generation (SHG) is observed in the cBN crystal for the first time by using a 1064-nm Q-switched Nd:YAG laser. The green light at 532 nm from the cBN sample can be seen with a naked eye. (nonlinear optical phenomena)

  16. Hanford Site - 100-HR-3-D | Department of Energy

    Office of Environmental Management (EM)

    D Hanford Site - 100-HR-3-D July 1, 2014 - 12:00pm Addthis US Department of Energy Groundwater Database Groundwater Master Report InstallationName, State: Hanford Site, WA Responsible DOE Office: Office of Environmental Management Plume Name: 100-HR-3-D Remediation Contractor: CHPRC PBS Number: 30 Report Last Updated: July 2014 with CY2013 data Contaminants Halogenated VOCs/SVOCs Present?: No Fuel Present? No Metals Present? Yes Isotopes Present? Yes Explosives Present? No Other Contaminants? No

  17. Fabrication of AlN/BN bishell hollow nanofibers by electrospinning and atomic layer deposition

    SciTech Connect (OSTI)

    Haider, Ali; Kayaci, Fatma; Uyar, Tamer; Biyikli, Necmi; Ozgit-Akgun, Cagla; Okyay, Ali Kemal

    2014-09-01

    Aluminum nitride (AlN)/boron nitride (BN) bishell hollow nanofibers (HNFs) have been fabricated by successive atomic layer deposition (ALD) of AlN and sequential chemical vapor deposition (CVD) of BN on electrospun polymeric nanofibrous template. A four-step fabrication process was utilized: (i) fabrication of polymeric (nylon 6,6) nanofibers via electrospinning, (ii) hollow cathode plasma-assisted ALD of AlN at 100?°C onto electrospun polymeric nanofibers, (iii) calcination at 500?°C for 2 h in order to remove the polymeric template, and (iv) sequential CVD growth of BN at 450?°C. AlN/BN HNFs have been characterized for their chemical composition, surface morphology, crystal structure, and internal nanostructure using X-ray photoelectron spectroscopy, scanning electron microscopy, transmission electron microscopy, energy dispersive X-ray spectroscopy, and selected area electron diffraction. Measurements confirmed the presence of crystalline hexagonal BN and AlN within the three dimensional (3D) network of bishell HNFs with relatively low impurity content. In contrast to the smooth surface of the inner AlN layer, outer BN coating showed a highly rough 3D morphology in the form of BN nano-needle crystallites. It is shown that the combination of electrospinning and plasma-assisted low-temperature ALD/CVD can produce highly controlled multi-layered bishell nitride ceramic hollow nanostructures. While electrospinning enables easy fabrication of nanofibrous template, self-limiting reactions of plasma-assisted ALD and sequential CVD provide control over the wall thicknesses of AlN and BN layers with sub-nanometer accuracy.

  18. Catalytic synthesis of bamboo-like multiwall BN nanotubes via SHS-annealing process

    SciTech Connect (OSTI)

    Zhang, L.P.; Gu, Y.L.; Wang, J.L.; Zhao, G.W.; Qian, Q.L.; Li, J.; Pan, X.Y.; Zhang, Z.H.

    2011-03-15

    Bamboo-like multiwall boron nitride (BN) nanotubes were synthesized via annealing porous precursor prepared by self-propagation high temperature synthesis (SHS) method. The as-synthesized BN nanotubes were characterized by the field emission scanning electron microscopy (FE-SEM), transmission electron microscope (TEM), high-resolution TEM (HRTEM), X-ray diffraction (XRD), Raman and Fourier transform infrared (FTIR) spectroscopy. These nanotubes have uniform diameters of about 60 nm and an average length of about 10 {mu}m. Four growth models, including tip, base, based tip and base-tip growth models, are proposed based on the catalytic vapor-liquid-solid (VLS) growth mechanism for explaining the formation of the as-synthesized bamboo-like BN nanotubes. Chemical reactions and annealing mechanism are also discussed. -- Graphical Abstract: A novel and effective annealing porous precursor route to bulk synthesis of bamboo-like multiwall BN nanotubes. Four growth models of VLS growth mechanism for these nanotubes are proposed. Display Omitted Research highlights: {yields} Bulk bamboo-like BN nanotubes were synthesized by SHS-annealing method. {yields} Boron-containing, porous precursor played a crucial role in bulk synthesis process. {yields} Four possible growth models were proposed to explain the formation of the bamboo-like BN nanotubes.

  19. Thermally induced formation of 2D hexagonal BN nanoplates with tunable characteristics

    SciTech Connect (OSTI)

    Nersisyan, Hayk; Lee, Tae-Hyuk; Lee, Kap-Ho; Jeong, Seong-Uk; Kang, Kyung-Soo; Bae, Ki-Kwang; Lee, Jong-Hyeon

    2015-05-15

    We have investigated a thermally induced combustion route for preparing 2D hexagonal BN nanoplates from B{sub 2}O{sub 3}+(3+0.5k)Mg+kNH{sub 4}Cl solid system, for k=1–4 interval. Temperature–time profiles recorded by thermocouples indicated the existence of two sequential exothermic processes in the combustion wave leading to the BN nanoplates formation. The resulting BN nanoplates were characterized by X-ray diffraction (XRD), field-emission scanning electron microscopy, PL spectrometry, and Brunauer–Emmett–Teller surface area analysis. It was found that B{sub 2}O{sub 3} was converted into BN completely (by XRD) at 1450–1930 °C within tens of seconds in a single-step synthesis process. The BN prepared at a k=1–4 interval comprised well-shaped nanoplates with an average edge length ranging from 50 nm to several micrometer and thickness from 5 to 100 nm. The specific surface area of BN nanoplates was 13.7 g/m{sup 2} for k=2 and 28.4 m{sup 2}/g for k=4. - Graphical abstract: 2D hexagonal BN nanoplates with an average edge length ranging from 50 nm to several micrometer and thickness from 5 to 100 nm were prepared by combustion of B{sub 2}O{sub 3}+(3+0.5k)Mg+kNH{sub 4}Cl solid mixture in nitrogen atmosphere. - Highlights: • Thermally induced combustion route was developed for synthesizing BN nanoplates from B{sub 2}O{sub 3}. • Mg was used as reductive agent and NH{sub 4}Cl as an effective nitrogen source. • Temperature–time profiles and the combustion parameters were recorded and discussed. • BN with an average edge length from 50 nm to several micrometer and thickness from 5 to 100 nm were prepared. • Our study clarifies the formation mechanism of BN in the combustion wave.

  20. Chemical interaction in the B-BN system at high pressures and temperatures

    SciTech Connect (OSTI)

    Solozhenko, Vladimir L.; Kurakevych, Oleksandr O.

    2009-06-15

    Chemical interaction and phase transformations in the B-BN system have been in situ studied by X-ray diffraction with synchrotron radiation at pressures up to 5.3 GPa and temperatures up to 2800 K using multianvil press. New rhombohedral boron subnitride B{sub 13}N{sub 2} has been synthesized by crystallization from the B-BN melt at 5 GPa. The structure of B{sub 13}N{sub 2} belongs to the R-3m space group (a=5.4455(2) A, c=12.2649(9) A) and represents a new structural type. The subnitride is an individual compound and not a solid solution, in contrast to boron carbide. Besides, the formation of two other boron-rich B-N phases denoted as 'B{sub 6}N' and 'B{sub 50}N{sub 2}' has been observed. Their structures seem to be much more sophisticated and have not been even resolved to present time. - Graphical abstract: Chemical interaction and phase transformations in the B-BN system have been in situ studied by X-ray diffraction with synchrotron radiation at pressures up to 5.3 GPa and temperatures up to 2800 K using multianvil press. Three boron subnitrides have been synthesized and characterized.

  1. NEW PRECISION ORBITS OF BRIGHT DOUBLE-LINED SPECTROSCOPIC BINARIES. VIII. HR 1528, HR 6993, 2 SAGITTAE, AND 18 VULPECULAE

    SciTech Connect (OSTI)

    Fekel, Francis C.; Williamson, Michael H.; Tomkin, Jocelyn E-mail: michael.h.williamson@gmail.com

    2013-11-01

    Improved orbital elements for four A-star double-lined spectroscopic binaries have been determined with numerous new radial velocities. Three of the four systems, HR 1528, 2 Sge, and 18 Vul, have moderately short orbital periods of 7.05, 7.39, and 9.31 days, respectively, and also have circular or nearly circular orbits. Only HR 6993 with a period of 14.68 days has a significantly eccentric orbit. The close visual companion of 2 Sge has been detected spectroscopically, and its velocity measured. The orbital dimensions (a {sub 1} sin i and a {sub 2} sin i) and minimum masses (m {sub 1} sin{sup 3} i and m {sub 2} sin{sup 3} i) of the short-period binary components all have accuracies of 0.5% or better. We determine basic properties of the individual stars and compare them with solar-abundance evolutionary tracks to estimate their masses. Half of the eight components may be synchronously or pseudosynchronously rotating.

  2. 110th Congress 2D Session H.R. 5746 | Department of Energy

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

    10th Congress 2D Session H.R. 5746 110th Congress 2D Session H.R. 5746 To amend the Internal Revenue Code of 1986 to establish the infrastructure hr_5746.pdf (60.24 KB) More Documents & Publications ENERGY POLICY ACT OF 2005 Energy Policy Act of 2005 Intelligence Reform and Terrorism Prevention Act - December 17, 2004

  3. Surprising stability of neutral interstitial hydrogen in diamond and cubic BN

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

    Lyons, J. L.; Van de Walle, C. G.

    2016-01-21

    We report that in virtually all semiconductors and insulators, hydrogen interstitials (Hi) act as negative-U centers, implying that hydrogen is never stable in the neutral charge state. Using hybrid density functional calculations, we find a different behavior for Hi in diamond and cubic BN. In diamond, Hi is a very strong positive-U center, and the H0icharge state is stable over a Fermi-level range of more than 2 eV. In cubic BN, a III-V compound similar to diamond, we also find positive-U behavior, though over a much smaller Fermi-level range. Finally, these results highlight the unique behavior of Hi in thesemore » covalent wide-band-gap semiconductors.« less

  4. Boron-Nitride (BN) Nanotubes (BNNT) at TJNAF| U.S. DOE Office of Science

    Office of Science (SC) Website

    (SC) Boron-Nitride (BN) Nanotubes (BNNT) at TJNAF Nuclear Physics (NP) NP Home About Research Facilities Science Highlights Benefits of NP Applications of Nuclear Science Applications of Nuclear Science Archives Small Business Innovation Research / Small Business Technology Transfer Funding Opportunities Nuclear Science Advisory Committee (NSAC) Community Resources Contact Information Nuclear Physics U.S. Department of Energy SC-26/Germantown Building 1000 Independence Ave., SW Washington,

  5. BN-350 unattended safeguards system current status and initial fuel movement data

    SciTech Connect (OSTI)

    Williams, Richard Brady; Browne, Michael C; Parker, Robert F; Ingegneri, Maurizio

    2009-01-01

    The Unattended and Remote Monitoring (UNARM) system at the BN-350 fast breeder reactor facility in Aktau, Kazakhstan continues to provide safeguards monitoring data as the spent fuel disposition project transitions from wet fuel storage to dry storage casks. Qualitative data from the initial cask loading procedures has been released by the International Atomic Energy Agency (IAEA) and is presented here for the first time. The BN-350 fast breeder reactor in Aktau, Kazakhstan, operated as a plutonium-producing facility from 1973 W1til 1999. Kazakhstan signed the Nonproliferation Treaty (NPT) in February 1994, and shortly afterwards the IAEA began safeguarding the reactor facility and its nuclear material. Slnce the cessation of reactor operations ten years ago, the chief proliferation concern has been the spent fuel assemblies stored in the pond on-site. By 2002, all fuel assemblies in wet storage had been repackaged into proliferation-resistant canisters. From the beginning, the IAEA's safeguards campaign at the BN-350 included a constant unattended sensor presence in the form of UNARM which monitors nuclear material activities at the facility in the absence of inspector presence. The UNARM equipment at the BN-350 was designed to be modular and extensible, allowing the system to adapt as the safeguards requirements change. This has been particularly important at the BN-350 due to the prolonged wet storage phase of the project. The primary function of the BN-350 UNARM system is to provide the IAEA with an independent, radiation-centric Containment and Surveillance (C&S) layer in addition to the standard seals and video systems. The UNARM system has provided continuous Continuity of Knowledge (COK) data for the BN-350's nuclear material storage areas in order to ensure the validity of the attended measurements during the lifetime of the project. The first of these attended measurements was characterization of the spent fuel assemblies. This characterization utilized

  6. DOE HR Guidebook 12_15_05.DOC | Department of Energy

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

    HR Guidebook 12_15_05.DOC� DOE HR Guidebook 12_15_05.DOC� DOE HR Guidebook 12_15_05.DOC� (8.6 MB) More Documents & Publications Operating Guidelines Appendix A B.DOC� 2 Jun 03 Roles and Responsibilities _CSO Highlighted_.doc� Operating Guidelines Appendix C D.DOC�

  7. May 5, 2016, FTCP Face to Face Meeting Presentation - HR Service...

    Energy Savers [EERE]

    Officer Kurt Stephens Classification Branch Lori Carter M&P HQ HRAO Jason Nelson Recruitment & Staffing Branch Cathy Little Benefits Branch Robin Campbell HR Processing & Info. ...

  8. AmeriFlux US-Bn1 Bonanza Creek, 1920 Burn site near Delta Junction

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

    Randerson, James [University of California, Irvine

    2016-01-01

    This is the AmeriFlux version of the carbon flux data for the site US-Bn1 Bonanza Creek, 1920 Burn site near Delta Junction. Site Description - The Delta Junction 1920 Control site is located near Delta Junction, just to the north of the Alaska Range in interior Alaska. All three Delta Junction sites are within a 15-km radius of one another. Composed of a combination of alluvial outwashes, floodplains, and low terraces dissected by glacial streams originating in the nearby Alaska Range. In 2001, total aboveground biomass consisted almost entirely of black spruce (Picea mariana).

  9. Immobilization of Cesium Traps from the BN-350 Fast Reactor (Aktau, Kazakhstan)

    SciTech Connect (OSTI)

    J. A. Michelbacher; C. Knight; O. G. Romanenko; I. L. Tazhibaeva; I. L. Yakovlev; A. V. Rovneyko; V. I. Maev; D. Wells; A. Herrick

    2011-03-01

    During BN-350 reactor operations and also during the initial stages of decommissioning, cesium traps were used to decontaminate the reactor’s primary sodium coolant. Two different types of carbon-based trap were used – the MAVR series, low ash granulated graphite adsorber (LAG) contained in a carrier designed to be inserted into the reactor core during shutdown; and a series of ex-reactor trap accumulators(TAs) which used reticulated vitreous carbon (RVC) to reduce Cs-137 levels in the sodium after final reactor shutdown. In total four MAVRs and seven TAs were used at BN-350 to remove an estimated cumulative 755 TBq of cesium. The traps, which also contain residual sodium, need to be immobilized in an appropriate way to allow them to be consigned as waste packages for long term storage and, ultimately, disposal. The present paper reports on the current status of the implementation phase, with particular reference to the work done to date on the trap accumulators, which have the most similarity with the cesium traps used at other reactors.

  10. AmeriFlux US-Bn2 Bonanza Creek, 1987 Burn site near Delta Junction

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

    Randerson, James [University of California, Irvine

    2016-01-01

    This is the AmeriFlux version of the carbon flux data for the site US-Bn2 Bonanza Creek, 1987 Burn site near Delta Junction. Site Description - The Delta Junction 1987 Burn site is located near Delta Junction, just to the north of the Alaska Range in interior Alaska. All three Delta Junction sites are within a 15-km radius of one another. Composed of a combination of alluvial outwashes, floodplains, and low terraces dissected by glacial streams originating in the nearby Alaska Range. The Granite Creek fire burned ~20,000 ha of black spruce (Picea mariana) during 1987. Approximately half of the dead boles remained upright in 2004, while the other half had fallen over or had become entangled with other boles.

  11. AmeriFlux US-Bn3 Bonanza Creek, 1999 Burn site near Delta Junction

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

    Randerson, James [University of California, Irvine

    2016-01-01

    This is the AmeriFlux version of the carbon flux data for the site US-Bn3 Bonanza Creek, 1999 Burn site near Delta Junction. Site Description - The Delta Junction 1999 Burn site is located near Delta Junction, just to the north of the Alaska Range in interior Alaska. All three Delta Junction sites are within a 15-km radius of one another. Composed of a combination of alluvial outwashes, floodplains, and low terraces dissected by glacial streams originating in the nearby Alaska Range. The Donnelly Flats fire burned ~7,600 ha of black spruce (Picea mariana) during June 1999. The boles of the black spruce remained standing 3 years after the fire. 70% of the surface was not covered by vascular plants.

  12. ARM - Field Campaign - Aerosol Life Cycle: HR-ToF-AMS

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

    Cycle: HR-ToF-AMS ARM Data Discovery Browse Data Related Campaigns Aerosol Life Cycle IOP at BNL 2011.06.01, Sedlacek, OSC Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : Aerosol Life Cycle: HR-ToF-AMS 2011.06.15 - 2011.08.15 Lead Scientist : Qi Zhang For data sets, see below. Abstract An Aerodyne High-Resolution Time-of-Flight Aerosol Mass Spectrometer (HR-ToF-AMS) was deployed during the Aerosol Life Cycle - IOP campaign at BNL in

  13. From pharma to fusion: Gangemi takes on post as HR Director ...

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

    From pharma to fusion: Gangemi takes on post as HR Director Murphy-LaMarche steps down ... do research aimed at developing magnetic fusion as an alternative energy source, the more ...

  14. Minority carrier lifetime and dark current measurements in mid-wavelength infrared InAs0.91Sb0.09 alloy nBn photodetectors

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

    Olson, B. V.; Kim, J. K.; Kadlec, E. A.; Klem, J. F.; Hawkins, S. D.; Leonhardt, D.; Coon, W. T.; Fortune, T. R.; Cavaliere, M. A.; Tauke-Pedretti, A.; et al

    2015-11-03

    Carrier lifetime and dark current measurements are reported for a mid-wavelength infrared InAs 0.91Sb0.09 alloy nBn photodetector. Minority carrier lifetimes are measured using a non-contact time-resolved microwave technique on unprocessed portions of the nBn wafer and the Auger recombination Bloch function parameter is determined to be |F1F2|=0.292. Moreover, the measured lifetimes are also used to calculate the expected diffusion dark current of the nBn devices and are compared with the experimental dark current measured in processed photodetector pixels from the same wafer. As a result, excellent agreement is found between the two, highlighting the important relationship between lifetimes and diffusionmore » currents in nBn photodetectors.« less

  15. The Fuel Cell Industrial Vehicle Jobs Act (H.R. 1659) | Department of

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

    Energy The Fuel Cell Industrial Vehicle Jobs Act (H.R. 1659) The Fuel Cell Industrial Vehicle Jobs Act (H.R. 1659) Presented at the Technology Transition Corporation and U.S. Department of Energy Webinar: Where the Jobs Are: Hydrogen and Fuel Cells in Your Area, July 19, 2011. webinarjul19_lipsey.pdf (3.61 MB) More Documents & Publications GREENING DOE HEADQUARTERS Response to several FOIA requests - Renewable Energy. Yucca Mountain - U.S. Department of Energy's Reply to the Responses to

  16. The Near Naked Hairless (HrN) Mutation Disrupts Hair Formation but is not Due to a Mutation in the Hairless Coding Region

    SciTech Connect (OSTI)

    Liu, Yutao; Das, Suchita; Olszewski, Robert Edward; Culiat, Cymbeline T; Carpenter, D A; Sundberg, John P; Soteropoulos, Patricia; Liu, Xiaochen; Doktycz, Mitchel John; Michaud III, Edward J; Voy, Brynn H

    2007-01-01

    Near naked hairless (HrN) is a semi-dominant mutation that arose spontaneously and was suggested by allelism testing to be an allele of mouse Hairless (Hr). HrN mice differ from other Hr mutants in that hair loss appears as the postnatal coat begins to emerge, as opposed to failure to initiate the first postnatal hair cycle, and that the mutation displays semi-dominant inheritance. We sequenced the Hr cDNA in HrN/HrN mice and characterized the pathological and molecular phenotypes to identify the basis for hair loss in this model. HrN/HrN mice exhibit dystrophic hairs that are unable to consistently emerge from the hair follicle, while HrN/+ mice display a sparse coat of hair and a milder degree of follicular dystrophy than their homozygous littermates. DNA microarray analysis of cutaneous gene expression demonstrates that numerous genes are downregulated in HrN/HrN mice, primarily genes important for hair structure. By contrast, Hr expression is significantly increased. Sequencing the Hr coding region, intron-exon boundaries, 5'- and 3'- UTR and immediate upstream region did not reveal the underlying mutation. Therefore HrN does not appear to be an allele of Hr but may result from a mutation in a closely linked gene or from a regulatory mutation in Hr.

  17. Impacts of Modeled Provisions of H.R. 6 EH: The Energy Policy Act of 2005

    Reports and Publications (EIA)

    2005-01-01

    This report responds to a May 2, 2005, request by Chairman Pete Domenici and Ranking Member Jeff Bingaman of the Senate Committee on Energy and Natural Resources for an assessment of the energy supply, consumption, import, price, and macroeconomic impacts of H.R. 6 EH, the Energy Policy Act of 2005, as passed by the U.S. House of Representatives on April 21, 2005.

  18. Hr. Michael Esposito Audio-Tex Industries, Incorporated 4555 West Addison Street

    Office of Legacy Management (LM)

    -- Hr. Michael Esposito Audio-Tex Industries, Incorporated 4555 West Addison Street Chicago, Illinois 60641 Dear Mr. Esposito: Enclosed is a copy of the final survey report for your facility in Chicago,. Illinois , which is the site of the former ERA Tool & Engineering Company. The survey report documents the fact that the radiological condition of your facility is in compliance with applicable Department of Energy Guidelines and that no remedial action or further investigaticns are

  19. Initial measurements of BN-350 spent fuel in dry storage casks using the dual slab verification detonator

    SciTech Connect (OSTI)

    Santi, Peter Angelo; Browne, Michael C; Freeman, Corey R; Parker, Robert F; Williams, Richard B

    2010-01-01

    The Dual Slab Verification Detector (DSVD) has been developed, built, and characterized by Los Alamos National Laboratory in cooperation with the International Atomic Energy Agency (IAEA) as part of the dry storage safeguards system for the spent fuel from the BN-350 fast reactor. The detector consists of two rows of 3He tubes embedded in a slab of polyethylene which has been designed to be placed on the outer surface of the dry storage cask. By performing DSVD measurements at several different locations around the outer surface of the DUC, a signature 'fingerprint' can be established for each DUC based on the neutron flux emanating from inside the dry storage cask. The neutron fingerprint for each individual DUC will be dependent upon the spatial distribution of nuclear material within the cask, thus making it sensitive to the removal of a certain amount of material from the cask. An initial set of DSVD measurements have been performed on the first set of dry storage casks that have been loaded with canisters of spent fuel and moved onto the dry storage pad to both establish an initial fingerprint for these casks as well as to quantify systematic uncertainties associated with these measurements. The results from these measurements will be presented and compared with the expected results that were determined based on MCNPX simulations of the dry storage facility. The ability to safeguard spent nuclear fuel is strongly dependent on the technical capabilities of establishing and maintaining continuity of knowledge (COK) of the spent fuel as it is released from the reactor core and either reprocessed or packaged and stored at a storage facility. While the maintenance of COK is often done using continuous containment and surveillance (C/S) on the spent fuel, it is important that the measurement capabilities exist to re-establish the COK in the event of a significant gap in the continuous CIS by performing measurements that independently confirm the presence and content

  20. Deep thermal infrared imaging of HR 8799 bcde: new atmospheric constraints and limits on a fifth planet

    SciTech Connect (OSTI)

    Currie, Thayne; Cloutier, Ryan; Jayawardhana, Ray; Burrows, Adam; Girard, Julien H.; Fukagawa, Misato; Sorahana, Satoko; Kuchner, Marc; Kenyon, Scott J.; Madhusudhan, Nikku; Itoh, Yoichi; Matsumura, Soko; Pyo, Tae-Soo

    2014-11-10

    We present new L' (3.8 ?m) and Br? (4.05 ?m) data and reprocessed archival L' data for the young, planet-hosting star HR 8799 obtained with Keck/NIRC2, VLT/NaCo, and Subaru/IRCS. We detect all four HR 8799 planets in each data set at a moderate to high signal-to-noise ratio (S/N ? 6-15). We fail to identify a fifth planet, 'HR 8799 f', at r < 15 AU at a 5? confidence level: one suggestive, marginally significant residual at 0.''2 is most likely a point-spread function artifact. Assuming companion ages of 30 Myr and the Baraffe planet cooling models, we rule out an HR 8799 f with a mass of 5 M{sub J} (7 M{sub J} ), 7 M{sub J} (10 M{sub J} ), or 12 M{sub J} (13 M{sub J} ) at r {sub proj} ? 12 AU, 9 AU, and 5 AU, respectively. All four HR 8799 planets have red early T dwarf-like L' – [4.05] colors, suggesting that their spectral energy distributions peak in between the L' and M' broadband filters. We find no statistically significant difference in HR 8799 cde's color. Atmosphere models assuming thick, patchy clouds appear to better match HR 8799 bcde's photometry than models assuming a uniform cloud layer. While non-equilibrium carbon chemistry is required to explain HR 8799 b and c's photometry/spectra, evidence for it from HR 8799 d and e's photometry is weaker. Future, deep-IR spectroscopy/spectrophotometry with the Gemini Planet Imager, SCExAO/CHARIS, and other facilities may clarify whether the planets are chemically similar or heterogeneous.

  1. Atmospheric retrieval analysis of the directly imaged exoplanet HR 8799b

    SciTech Connect (OSTI)

    Lee, Jae-Min; Heng, Kevin; Irwin, Patrick G. J. E-mail: kevin.heng@csh.unibe.ch

    2013-12-01

    Directly imaged exoplanets are unexplored laboratories for the application of the spectral and temperature retrieval method, where the chemistry and composition of their atmospheres are inferred from inverse modeling of the available data. As a pilot study, we focus on the extrasolar gas giant HR 8799b, for which more than 50 data points are available. We upgrade our non-linear optimal estimation retrieval method to include a phenomenological model of clouds that requires the cloud optical depth and monodisperse particle size to be specified. Previous studies have focused on forward models with assumed values of the exoplanetary properties; there is no consensus on the best-fit values of the radius, mass, surface gravity, and effective temperature of HR 8799b. We show that cloud-free models produce reasonable fits to the data if the atmosphere is of super-solar metallicity and non-solar elemental abundances. Intermediate cloudy models with moderate values of the cloud optical depth and micron-sized particles provide an equally reasonable fit to the data and require a lower mean molecular weight. We report our best-fit values for the radius, mass, surface gravity, and effective temperature of HR 8799b. The mean molecular weight is about 3.8, while the carbon-to-oxygen ratio is about unity due to the prevalence of carbon monoxide. Our study emphasizes the need for robust claims about the nature of an exoplanetary atmosphere to be based on analyses involving both photometry and spectroscopy and inferred from beyond a few photometric data points, such as are typically reported for hot Jupiters.

  2. The Fuel Cell Industrial Vehicle Jobs Act (H.R. 1659)

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

    MODEL PARTNERSHIP AMONG LOCAL LEADERS SIMPLE, SMART REFORM TO PROMOTE JOB GROWTH The Fuel Cell Industrial Vehicle Jobs Act (H.R. 1659) RACHEL LIPSEY - OFFICE OF REP. PAUL D. TONKO - 202.225.5076 - RLIPSEY@MAIL.HOUSE.GOV Rep. Paul D. Tonko New York's 21 st Congressional District Biography * U.S. Congress (NY-21) *Budget and Science Committees *Educated as an Engineer at SUNY Clarkson * New York Assembly 20+ years *Chair of Energy Committee *President and CEO of NYSERDA RACHEL LIPSEY - OFFICE OF

  3. The 1991-2012 light curve of the old nova HR Lyrae

    SciTech Connect (OSTI)

    Honeycutt, R. K.; Shears, J.; Kafka, S.; Robertson, J. W.; Henden, A. A. E-mail: bunburyobservatory@hotmail.com E-mail: Jeff.Robertson@atu.edu

    2014-05-01

    The 22 yr light curve of HR Lyr, acquired with a typical cadence of 2-6 days, is examined for periodic and quasi-periodic variations. No persistent periodicities are revealed. Rather, the light curve variations often take the form of nearly linear rises and falls having typical e-folding times of about 100 days. Occasional ?0.6 mag outbursts are also seen, with properties similar to those of small outbursts found in some nova-like cataclysmic variables. When the photometry is formed into yearly averages, a decline of 0.012 ± 0.005 mag yr{sup –1} is apparent, consistent with the fading of irradiation-induced M-dot following the nova. The equivalent width of H? is tabulated at three epochs over the interval 1986-2008 in order to compare with a recent result for DK Lac in which H? was found to be fading 50 yr after the nova. However, our results for such a fading in HR Lyr are inconclusive.

  4. The Application of Structural Materials Data From the BN-350 Fast Reactor to Life Extension of Light Water Reactors

    SciTech Connect (OSTI)

    Romanenko, O.G.; Kislitsin, S.B.; Maksimkin, O.P.; Shiganakov, Sh.B.; Chumakov, Ye.V.; Dumchev, I.V.

    2006-07-01

    This paper describes the results of investigations of 08Cr16Ni11Mo3 (AISI 316 steel analogue) austenitic stainless steel irradiated in BN-350 breeder reactor at irradiation conditions close to that for Light Water Reactor (LWR) Internals. The pores were found in 08Cr16Ni11Mo3 steel irradiated at temperature 280 deg. C up to rather low damage 1.3 dpa and with dose rate 3.9 x 10{sup -9} dpa/s. There were obtained dose rate dependencies of yield strength, ultimate strength and ductility for 08Cr16Ni11Mo3 steel irradiated up to 7-13 dpa at 302-311 deg. C. These dependencies show a decrease in both yield strength and ultimate strength when dose rate decreases. There was observed an apparent decrease in total elongation when dose rate decreases, which was presumably connected with the pores formation in the steel at low dose rates. (authors)

  5. Direct minority carrier transport characterization of InAs/InAsSb superlattice nBn photodetectors

    SciTech Connect (OSTI)

    Zuo, Daniel; Liu, Runyu; Wasserman, Daniel; Mabon, James; He, Zhao -Yu; Liu, Shi; Zhang, Yong -Hang; Kadlec, Emil A.; Olson, Benjamin V.; Shaner, Eric A.

    2015-02-18

    We present an extensive characterization of the minority carrier transport properties in an nBn mid-wave infrared detector incorporating a Ga-free InAs/InAsSb type-II superlattice as the absorbing region. Using a modified electron beam induced current technique in conjunction with time-resolved photoluminescence, we were able to determine several important transport parameters of the absorber region in the device, which uses a barrier layer to reduce dark current. For a device at liquid He temperatures we report a minority carrier diffusion length of 750 nm and a minority carrier lifetime of 202 ns, with a vertical diffusivity of 2.78 x 10–2 cm2/s. We also report on the device's optical response characteristics at 78 K.

  6. Direct minority carrier transport characterization of InAs/InAsSb superlattice nBn photodetectors

    SciTech Connect (OSTI)

    Zuo, Daniel Liu, Runyu; Wasserman, Daniel; Mabon, James; He, Zhao-Yu; Liu, Shi; Zhang, Yong-Hang; Kadlec, Emil A.; Olson, Benjamin V.; Shaner, Eric A.

    2015-02-16

    We present an extensive characterization of the minority carrier transport properties in an nBn mid-wave infrared detector incorporating a Ga-free InAs/InAsSb type-II superlattice as the absorbing region. Using a modified electron beam induced current technique in conjunction with time-resolved photoluminescence, we were able to determine several important transport parameters of the absorber region in the device, which uses a barrier layer to reduce dark current. For a device at liquid He temperatures, we report a minority carrier diffusion length of 750 nm and a minority carrier lifetime of 200 ns, with a vertical diffusivity of 3 × 10{sup −2} cm{sup 2}/s. We also report on the device's optical response characteristics at 78 K.

  7. Direct minority carrier transport characterization of InAs/InAsSb superlattice nBn photodetectors

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

    Zuo, Daniel; Liu, Runyu; Wasserman, Daniel; Mabon, James; He, Zhao -Yu; Liu, Shi; Zhang, Yong -Hang; Kadlec, Emil A.; Olson, Benjamin V.; Shaner, Eric A.

    2015-02-18

    We present an extensive characterization of the minority carrier transport properties in an nBn mid-wave infrared detector incorporating a Ga-free InAs/InAsSb type-II superlattice as the absorbing region. Using a modified electron beam induced current technique in conjunction with time-resolved photoluminescence, we were able to determine several important transport parameters of the absorber region in the device, which uses a barrier layer to reduce dark current. For a device at liquid He temperatures we report a minority carrier diffusion length of 750 nm and a minority carrier lifetime of 202 ns, with a vertical diffusivity of 2.78 x 10–2 cm2/s. Wemore » also report on the device's optical response characteristics at 78 K.« less

  8. Differential regulation of apoptosis in slow and fast twitch muscles of aged female F344BN rats

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

    Rice, Kevin M.; Manne, Nandini D. P. K.; Gadde, Murali K.; Paturi, Satyanarayana; Arvapalli, Ravikumar; Blough, Eric

    2015-03-28

    Age-related muscle atrophy is characterized by decreases in muscle mass and is thought be mediated, at least in part, by increases in myocyte apoptosis. Recent data has demonstrated that the degree of muscle loss with aging may differ between males and females while other work has suggested that apoptosis as indicated by DNA fragmentation may be regulated differently in fast- and slow-twitch muscles. Herein, we investigate how aging affects the regulation of muscle apoptosis in the fast-twitch extensor digitorum longus (EDL) and slow-twitch soleus muscles of young (6-month), aged (26-month), and very aged (30-month) female Fischer 344/NNiaHSD × Brown Norway/BiNiamore » (F344BN) rats. Tissue sections were stained with hydroethidium for ROS and protein extract was subjected to immunoblotting for assessing apoptotic markers. Our data suggest that decreases in muscle mass were associated with increased DNA fragmentation (TUNEL positive) and increases in reactive oxygen species (ROS) as determined by hydroethidium staining in both the EDL and soleus. Similar to our previous work using aged male animals, we observed that the time course and magnitude of changes in Bax, Bcl-2, caspase-3, caspase-9, and cleavage of α-fodrin protein were regulated differently between muscles. As a result, These data suggest that aging in the female F344BN rat is associated with decreases in muscle mass, elevations in ROS level, increased muscle cell DNA fragmentation, and alterations in cell membrane integrity and that apoptotic mechanisms may differ between fiber types.« less

  9. A NORMETEX MODEL 15 M3/HR WATER VAPOR PUMPING TEST

    SciTech Connect (OSTI)

    Klein, J.; Fowley, M.; Steeper, T.

    2010-12-20

    Tests were performed using a Model 15 m{sup 3}/hr Normetex vacuum pump to determine if pump performance degraded after pumping a humid gas stream. An air feed stream containing 30% water vapor was introduced into the pump for 365 hours with the outlet pressure of the pump near the condensation conditions of the water. Performance of the pump was tested before and after the water vapor pumping test and indicated no loss in performance of the pump. The pump also appeared to tolerate small amounts of condensed water of short duration without increased noise, vibration, or other adverse indications. The Normetex pump was backed by a dual-head diaphragm pump which was affected by the condensation of water and produced some drift in operating conditions during the test.

  10. Gemini Planet Imager Spectroscopy of the HR 8799 Planets c and d

    SciTech Connect (OSTI)

    Ingraham, Patrick; Marley, Mark S.; Saumon, Didier; Marois, Christian; Macintosh, Bruce; Barman, Travis; Bauman, Brian; Burrows, Adam; Chilcote, Jeffrey K.; De Rosa, Robert J.; Dillon, Daren; Doyon, René; Dunn, Jennifer; Erikson, Darren; Fitzgerald, Michael P.; Gavel, Donald; Goodsell, Stephen J.; Graham, James R.; Hartung, Markus; Hibon, Pascale; Kalas, Paul G.; Konopacky, Quinn; Larkin, James A.; Marchis, Franck; McBride, James; Millar-Blanchaer, Max; Morzinski, Katie M.; Norton, Andrew; Oppenheimer, Rebecca; Palmer, Dave W.; Patience, Jenny; Perrin, Marshall D.; Poyneer, Lisa A.; Pueyo, Laurent; Rantakyrö, Fredrik; Sadakuni, Naru; Saddlemyer, Leslie; Savransky, Dmitry; Soummer, Rémi; Sivaramakrishnan, Anand; Song, Inseok; Thomas, Sandrine; Kent Wallace, J.; Wiktorowicz, Sloane J.; Wolff, Schuyler G.

    2014-09-30

    During the first-light run of the Gemini Planet Imager we obtained K-band spectra of exoplanets HR 8799 c and d. Analysis of the spectra indicates that planet d may be warmer than planet c. Comparisons to recent patchy cloud models and previously obtained observations over multiple wavelengths confirm that thick clouds combined with horizontal variation in the cloud cover generally reproduce the planets’ spectral energy distributions.When combined with the 3 to 4μm photometric data points, the observations provide strong constraints on the atmospheric methane content for both planets. Lastly, the data also provide further evidence that future modeling efforts must include cloud opacity, possibly including cloud holes, disequilibrium chemistry, and super-solar metallicity.

  11. Gemini Planet Imager Spectroscopy of the HR 8799 Planets c and d

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

    Ingraham, Patrick; Marley, Mark S.; Saumon, Didier; Marois, Christian; Macintosh, Bruce; Barman, Travis; Bauman, Brian; Burrows, Adam; Chilcote, Jeffrey K.; De Rosa, Robert J.; et al

    2014-09-30

    During the first-light run of the Gemini Planet Imager we obtained K-band spectra of exoplanets HR 8799 c and d. Analysis of the spectra indicates that planet d may be warmer than planet c. Comparisons to recent patchy cloud models and previously obtained observations over multiple wavelengths confirm that thick clouds combined with horizontal variation in the cloud cover generally reproduce the planets’ spectral energy distributions.When combined with the 3 to 4μm photometric data points, the observations provide strong constraints on the atmospheric methane content for both planets. Lastly, the data also provide further evidence that future modeling efforts mustmore » include cloud opacity, possibly including cloud holes, disequilibrium chemistry, and super-solar metallicity.« less

  12. Data validation report for the 100-HR-3 Operable Unit first quarter 1994 groundwater sampling data

    SciTech Connect (OSTI)

    Biggerstaff, R.L.

    1994-06-24

    Westinghouse-Hanford has requested that a minimum of 20% of the total number of Sample Delivery Groups be validated for the 100-HR-3 Operable Unit First Quarter 1994 Groundwater Sampling Investigation. Therefore, the data from the chemical analysis of twenty-four samples from this sampling event and their related quality assurance samples were reviewed and validated to verify that reported sample results were of sufficient quality to support decisions regarding remedial actions performed at this site. The samples were analyzed by Thermo-Analytic Laboratories (TMA) and Roy F. Weston Laboratories (WESTON) using US Environmental Protection Agency (EPA) CLP protocols. Sample analyses included: inorganics; and general chemical parameters. Forty-two samples were validated for radiochemical parameters by TMA and Teledyne.

  13. Limited field investigation report for the 100-HR-1 Operable Unit

    SciTech Connect (OSTI)

    Not Available

    1994-08-01

    This limited field investigation (LFI) report summarizes the data collection and analysis activities conducted during the 100-HR-1 Source Operable Unit LFI and the associated qualitative risk assessment (QRA) (WHC 1993a), and makes recommendations on the continued candidacy of high-priority sites for interim remedial measures (IRM). The results and recommendations presented in this report are generally independent of future land use scenarios. A LFI Report is required, in accordance with the HPPS, when waste sites are to be considered for IRMs. The LFI is an integral part of the remedial investigation/feasibility study (RI/FS) or Resource Conservation and Recovery Act (RCRA) facility investigation/corrective measures study (RFI/CMS) and process and functions as a focused RI or RFI for selection of IRMs. The purpose of the report is to identify those sites that are recommended to remain as candidates for IRMs, provide a preliminary summary of site characterization studies, refine the conceptual model as needed, identify contaminant- and location-specific applicable or relevant and appropriate requirements (ARA), and provide a qualitative assessment of the risks associated with the sites. This assessment includes consideration of whether contaminant concentrations pose an unacceptable risk that warrants action through IRMs. The 100-HR-1 unit encompasses approximately 100 acres adjacent to the Columbia River shoreline. It contains waste units associated with the original plant facilities constructed to support the H Reactor. The area also contains evaporation basins which received liquid process wastes and nonroutine deposits of chemical wastes from the 300 Area, where fuel elements for the N Reactor were produced.

  14. Pilot-scale treatability test plan for the 100-HR-3 operable unit

    SciTech Connect (OSTI)

    Not Available

    1994-08-01

    This document presents the treatability test plan for pilot-scale pump-and-treat testing at the 100-HR-3 Operable Unit. The test will be conducted in fulfillment of interim Milestone M-15-06E to begin pilot-scale pump-and-treat operations by August 1994. The scope of the test was determined based on the results of lab/bench-scale tests (WHC 1993a) conducted in fulfillment of Milestone M-15-06B. These milestones were established per agreement between the U.S. Department of Energy (DOE), the Washington State Department of Ecology and the U.S. Environmental Protection Agency (EPA), and documented on Hanford Federal of Ecology Facility Agreement and Consent Order Change Control Form M-15-93-02. This test plan discusses a pilot-scale pump-and-treat test for the chromium plume associated with the D Reactor portion of the 100-HR-3 Operable Unit. Data will be collected during the pilot test to assess the effectiveness, operating parameters, and resource needs of the ion exchange (IX) pump-and-treat system. The test will provide information to assess the ability to remove contaminants by extracting groundwater from wells and treating extracted groundwater using IX. Bench-scale tests were conducted previously in which chromium VI was identified as the primary contaminant of concern in the 100-D reactor plume. The DOWEX 21K{trademark} resin was recommended for pilot-scale testing of an IX pump-and-treat system. The bench-scale test demonstrated that the system could remove chromium VI from groundwater to concentrations less than 50 ppb. The test also identified process parameters to monitor during pilot-scale testing. Water will be re-injected into the plume using wells outside the zone of influence and upgradient of the extraction well.

  15. An indirect method of studying band alignments in nBn photodetectors using off-axis electron holography

    SciTech Connect (OSTI)

    Shen, Xiao-Meng; He, Zhao-Yu; Liu, Shi; Lin, Zhi-Yuan; Zhang, Yong-Hang; Smith, David J.; McCartney, Martha R.

    2015-09-21

    Mid-wave and long-wave infrared nBn photodetectors with absorbers consisting of InAs/InAsSb superlattices and barriers consisting of InAs/AlGaSb(As) superlattices were grown using molecular beam epitaxy. High-resolution X-ray diffraction showing significant differences in Ga composition in the barrier layer, and different dark current behavior at 77 K, suggested the possibility of different types of band alignments between the barrier layer and the absorber for the mid- and long-wave infrared samples. Examination of the barrier layers using off-axis electron holography showed the presence of positive charge with an estimated density of 1.8 × 10{sup 17}/cm{sup 3} in the mid-wave sample as a result of a type-II band alignment, whereas negligible charge was detected in the long-wave sample, consistent with a type-I band alignment.

  16. Minority carrier lifetime and dark current measurements in mid-wavelength infrared InAs0.91Sb0.09 alloy nBn photodetectors

    SciTech Connect (OSTI)

    Olson, B. V.; Kim, J. K.; Kadlec, E. A.; Klem, J. F.; Hawkins, S. D.; Leonhardt, D.; Coon, W. T.; Fortune, T. R.; Cavaliere, M. A.; Tauke-Pedretti, A.; Shaner, E. A.

    2015-11-03

    Carrier lifetime and dark current measurements are reported for a mid-wavelength infrared InAs 0.91Sb0.09 alloy nBn photodetector. Minority carrier lifetimes are measured using a non-contact time-resolved microwave technique on unprocessed portions of the nBn wafer and the Auger recombination Bloch function parameter is determined to be |F1F2|=0.292. Moreover, the measured lifetimes are also used to calculate the expected diffusion dark current of the nBn devices and are compared with the experimental dark current measured in processed photodetector pixels from the same wafer. As a result, excellent agreement is found between the two, highlighting the important relationship between lifetimes and diffusion currents in nBn photodetectors.

  17. Energy Market and Economic Impacts of H.R. 2454, the American Clean Energy and Security Act of 2009

    Reports and Publications (EIA)

    2009-01-01

    This report responds to a request from Chairman Henry Waxman and Chairman Edward Markey for an analysis of H.R. 2454, the American Clean Energy and Security Act of 2009 (ACESA). ACESA, as passed by the House of Representatives on June 26, 2009, is a complex bill that regulates emissions of greenhouse gases through market-based mechanisms, efficiency programs, and economic incentives.

  18. KOI-2700b—a planet candidate with dusty effluents on a 22 hr orbit

    SciTech Connect (OSTI)

    Rappaport, Saul; Sanchis-Ojeda, Roberto; Barclay, Thomas; Still, Martin; Rowe, Jason E-mail: rsanchis86@gmail.com E-mail: martin.d.still@nasa.gov E-mail: jasonfrowe@gmail.com

    2014-03-20

    Kepler planet candidate KOI-2700b (KIC 8639908b), with an orbital period of 21.84 hr, exhibits a distinctly asymmetric transit profile, likely indicative of the emission of dusty effluents, and reminiscent of KIC 1255b. The host star has T {sub eff} = 4435 K, M ? 0.63 M {sub ?}, and R ? 0.57 R {sub ?}, comparable to the parameters ascribed to KIC 12557548. The transit egress can be followed for ?25% of the orbital period and, if interpreted as extinction from a dusty comet-like tail, indicates a long lifetime for the dust grains of more than a day. We present a semiphysical model for the dust tail attenuation and fit for the physical parameters contained in that expression. The transit is not sufficiently deep to allow for a study of the transit-to-transit variations, as is the case for KIC 1255b; however, it is clear that the transit depth is slowly monotonically decreasing by a factor of ?2 over the duration of the Kepler mission. We infer a mass-loss rate in dust from the planet of ?2 lunar masses per Gyr. The existence of a second star hosting a planet with a dusty comet-like tail would help to show that such objects may be more common and less exotic than originally thought. According to current models, only quite small planets with M{sub p} ? 0.03 M {sub ?} are likely to release a detectable quantity of dust. Thus, any 'normal-looking' transit that is inferred to arise from a rocky planet of radius greater than ?1/2 R {sub ?} should not exhibit any hint of a dusty tail. Conversely, if one detects an asymmetric transit due to a dusty tail, then it will be very difficult to detect the hard body of the planet within the transit because, by necessity, the planet must be quite small (i.e., ? 0.3 R {sub ?}).

  19. Clouds and Chemistry in the Atmosphere of Extrasolar Planet HR8799b

    SciTech Connect (OSTI)

    Barman, T S; Macintosh, B A; Konopacky, Q M; Marois, C

    2011-03-21

    Using the integral field spectrograph OSIRIS, on the Keck II telescope, broad near-infrared H and K-band spectra of the young exoplanet HR8799b have been obtained. In addition, six new narrow-band photometric measurements have been taken across the H and K bands. These data are combined with previously published photometry for an analysis of the planet's atmospheric properties. Thick photospheric dust cloud opacity is invoked to explain the planet's red near-IR colors and relatively smooth near-IR spectrum. Strong water absorption is detected, indicating a Hydrogen-rich atmosphere. Only weak CH{sub 4} absorption is detected at K band, indicating efficient vertical mixing and a disequilibrium CO/CH{sub 4} ratio at photospheric depths. The H-band spectrum has a distinct triangular shape consistent with low surface gravity. New giant planet atmosphere models are compared to these data with best fitting bulk parameters, T{sub eff} = 1100K {+-} 100 and log(g) = 3.5 {+-} 0.5 (for solar composition). Given the observed luminosity (log L{sub obs}/L{sub {circle_dot}} {approx} -5.1), these values correspond to a radius of 0.75 R{sub Jup{sub 0.12}{sup +0.17}} and mass {approx} 0.72 M{sub Jup{sub -0.6}{sup +2.6}} - strikingly inconsistent with interior/evolution models. Enhanced metallicity (up to {approx} 10 x that of the Sun) along with thick clouds and non-equilibrium chemistry are likely required to reproduce the complete ensemble of spectroscopic and photometric data and the low effective temperatures (< 1000K) required by the evolution models.

  20. TREATMENT TESTS FOR EX SITU REMOVAL OF CHROMATE & NITRATE & URANIUM (VI) FROM HANFORD (100-HR-3) GROUNDWATER FINAL REPORT

    SciTech Connect (OSTI)

    BECK MA; DUNCAN JB

    1994-01-03

    This report describes batch and ion exchange column laboratory scale studies investigating ex situ methods to remove chromate (chromium [VI]), nitrate (NO{sub 3}{sup -}) and uranium (present as uranium [VI]) from contaminated Hanford site groundwaters. The technologies investigated include: chemical precipitation or coprecipitation to remove chromate and uranium; and anion exchange to remove chromate, uranium and nitrate. The technologies investigated were specified in the 100-HR-3 Groundwater Treatability Test Plan. The method suggested for future study is anion exchange.

  1. NEW PRECISION ORBITS OF BRIGHT DOUBLE-LINED SPECTROSCOPIC BINARIES. VII. 47 ANDROMEDAE, 38 CASSIOPEIAE, AND HR 8467

    SciTech Connect (OSTI)

    Fekel, Francis C.; Williamson, Michael H.; Tomkin, Jocelyn; Pourbaix, Dimitri E-mail: jt@alexis.as.utexas.edu

    2011-09-15

    Improved orbital elements for three double-lined spectroscopic binaries, 47 And, 38 Cas, and HR 8467, have been determined with extensive new radial velocities. For 38 Cas lines of the secondary have been detected for the first time. Given the orbital periods for these systems of 35.3682, 134.130, and 42.3813 days, respectively, it is not surprising that all three have either moderate or relatively high eccentricities. The orbital dimensions (a{sub 1}sin i and a{sub 2}sin i) and minimum masses (m{sub 1}sin{sup 3}i and m{sub 2}sin{sup 3}i) have accuracies of 0.5% or better. An astrometric orbit for 38 Cas, which was recomputed with Hipparcos astrometry and our new spectroscopic orbital elements, produces a very high orbital inclination of 88{sup 0} {+-} 5{sup 0}. We have found no evidence for eclipses in either 38 Cas or HR 8467. We estimate that both components of 38 Cas are slightly metal poor with [Fe/H] = -0.3. The two components of 47 And are Am main-sequence stars, while our spectral types for 38 Cas are F6 dwarf and G5 dwarf for its primary and secondary, respectively. For HR 8467 we determined spectral types of F6 subgiant and F6 dwarf for the components. The primary of HR 8467 is likely just beginning to traverse the Hertzsprung gap and is rotating more slowly than its pseudosynchronous velocity, while the main-sequence secondary is rotating pseudosynchronously. On the other hand, the binary components of 47 And and 38 Cas are rotating significantly faster than their pseudosynchronous velocities.

  2. Experiments Performed in Substantiation of the Conditioning of BN-350 Spent Cesium Traps Using Lead or Lead-Bismuth Alloy Filling Technology

    SciTech Connect (OSTI)

    O. Romanenko; I. Tazhibaeva; I. Yakovlev; A. Ivanov; D. Wells; A. Herrick; J. Michelbacher; S. Shiganakov

    2009-05-01

    The technology of cleaning cesium radionuclides from sodium coolant at the BN-350 fast reactor was realized in the form of cesium traps of two types: stationary devices connected to the circuit that was to be cleaned and in-core devices installed into the core of reactor when it was not under operation. Carbon-graphite materials were used as sorbents to collect and concentrate radioactive cesium, accumulated in the BN-350 reactor circuits over the decades of their operation, in relatively small volume traps which provided effective radiation-safe conditions for personnel working in proximity to the coolant and equipment of the primary circuit during BN-350 decommissioning. Spent cesium traps, as products unfit for further use, represent solid radioactive wastes. The presence of chemically active sodium, potassium and cesium that are able to react violently with water results in series of problems related to their disposal in the Republic of Kazakhstan. Considering the technology of filling spent cesium traps with lead/lead-bismuth alloy as a priority one for their conditioning, evaluations for safety substantiation were implemented. A set of experiments was implemented aimed at verification of calculations performed in substantiation of the proposed technology: filling a full scale cesium trap mock-up with sodium followed by its draining to determine the optimal regimes of draining; filling bench scale cesium trap mock-ups with sodium and cesium followed by sodium draining and filling with lead or lead-bismuth alloy at different temperatures and filling rates to chose the optimal regimes for filling spent cesium traps; implementation of leachability tests to determine the rate of cesium release from the filling materials into water. This paper provides a description of the experimental program carried out and the main results obtained.

  3. The development of an integrated multistage fluid bed retorting process. [Kentort II process--50-lb/hr

    SciTech Connect (OSTI)

    Carter, S.; Stehn, J.; Vego, A.; Taulbee, D.

    1992-05-01

    This report summarizes the progress made on the development of an integrated multistage fluidized bed retorting process (KENTORT II) during the period of January 1, 1992 through March 31, 1992. The KENTORT II process includes integral fluidized bed zones for pyrolysis, gasification, and combustion of the oil shale. The purpose of this program is to design and test the KENTORT II process at the 50-lb/hr scale. The design of the 50-lb/hr KENTORT II retort was completed and fabrication is ready to begin. Data from the cold-flow model of the system and operating experience from the 5-lb/hr unit were used as the basis for the design. In another aspect of the program, a study of the cracking and coking kinetics of shale oil vapors was continued. A mathematical model was implemented to characterize the important mass transfer effects of the system. This model will be eventually broadened to become a general fluidized bed coking model. In addition, experiments were performed to examine the effects of surface area, initial carbon content and steam treatment on coking activity. From the data that has been collected to-date, it appears that the coking activity of the tested substrates can be explained in terms of porosity (surface area and pore volume) and the initial carbon content of the solid.

  4. A 24 hr global campaign to assess precision timing of the millisecond pulsar J1713+0747

    SciTech Connect (OSTI)

    Dolch, T.; Lam, M. T.; Cordes, J.; Chatterjee, S.; Bassa, C.; Hessels, J. W. T.; Janssen, G.; Kondratiev, V.; Bhattacharyya, B.; Jordan, C.; Keith, M.; Champion, D. J.; Karuppusamy, R.; Kramer, M.; Lazarus, P.; Cognard, I.; Demorest, P. B.; Jenet, F. A.; Jones, G.; and others

    2014-10-10

    The radio millisecond pulsar J1713+0747 is regarded as one of the highest-precision clocks in the sky and is regularly timed for the purpose of detecting gravitational waves. The International Pulsar Timing Array Collaboration undertook a 24 hr global observation of PSR J1713+0747 in an effort to better quantify sources of timing noise in this pulsar, particularly on intermediate (1-24 hr) timescales. We observed the pulsar continuously over 24 hr with the Arecibo, Effelsberg, GMRT, Green Bank, LOFAR, Lovell, Nançay, Parkes, and WSRT radio telescopes. The combined pulse times-of-arrival presented here provide an estimate of what sources of timing noise, excluding DM variations, would be present as compared to an idealized √N improvement in timing precision, where N is the number of pulses analyzed. In the case of this particular pulsar, we find that intrinsic pulse phase jitter dominates arrival time precision when the signal-to-noise ratio of single pulses exceeds unity, as measured using the eight telescopes that observed at L band/1.4 GHz. We present first results of specific phenomena probed on the unusually long timescale (for a single continuous observing session) of tens of hours, in particular interstellar scintillation, and discuss the degree to which scintillation and profile evolution affect precision timing. This paper presents the data set as a basis for future, deeper studies.

  5. Vibrational spectral signatures of crystalline cellulose using high resolution broadband sum frequency generation vibrational spectroscopy (HR-BB-SFG-VS)

    SciTech Connect (OSTI)

    Zhang, Libing; Lu, Zhou; Velarde, Luis; Fu, Li; Pu, Yunqiao; Ding, Shi-You; Ragauskas, Arthur; Wang, Hong-Fei; Yang, Bin

    2015-03-03

    Both the C–H and O–H region spectra of crystalline cellulose were studied using the sub-wavenumber high-resolution broadband sum frequency generation vibrational spectroscopy (HR-BB-SFG-VS) for the first time. The resolution of HR-BB-SFG-VS is about 10-times better than conventional scanning SFG-VS and has the capability of measuring the intrinsic spectral lineshape and revealing many more spectral details. With HR-BB-SFG-VS, we found that in cellulose samples from different sources, including Avicel and cellulose crystals isolated from algae Valonia (Iα) and tunicates (Iβ), the spectral signatures in the O–H region were unique for the two allomorphs, i.e. Iα and Iβ, while the spectral signatures in the C–H regions varied in all samples examined. Even though the origin of the different spectral signatures of the crystalline cellulose in the O–H and C–H vibrational frequency regions are yet to be correlated to the structure of cellulose, these results lead to new spectroscopic methods and opportunities to classify and to understand the basic crystalline structures, as well as variations in polymorphism of the crystalline cellulose.

  6. Process Flow Chart for Immobilizing of Radioactive High Concentration Sodium Hydroxide Product from the Sodium Processing Facility at the BN-350 Nuclear power plant in Aktau, Kazakhstan

    SciTech Connect (OSTI)

    Burkitbayev, M.; Omarova, K.; Tolebayev, T.; Galkin, A.; Bachilova, N.; Blynskiy, A.; Maev, V.; Wells, D.; Herrick, A.; Michelbacher, J.

    2008-07-01

    This paper describes the results of a joint research investigations carried out by the group of Kazakhstan, British and American specialists in development of a new material for immobilization of radioactive 35% sodium hydroxide solutions from the sodium coolant processing facility of the BN-350 nuclear power plant. The resulting solid matrix product, termed geo-cement stone, is capable of isolating long lived radionuclides from the environment. The physico-mechanical properties of geo-cement stone have been investigated and the flow chart for its production verified in a full scale experiments. (author)

  7. THE PHASES DIFFERENTIAL ASTROMETRY DATA ARCHIVE. IV. THE TRIPLE STAR SYSTEMS 63 Gem A AND HR 2896

    SciTech Connect (OSTI)

    Muterspaugh, Matthew W.; Fekel, Francis C.; Williamson, M.; Lane, Benjamin F.; Hartkopf, William I.; Kulkarni, S. R.; Konacki, Maciej; Burke, Bernard F.; Colavita, M. M.; Shao, M. E-mail: blane@draper.co E-mail: maciej@ncac.torun.p

    2010-12-15

    Differential astrometry measurements from the Palomar High-precision Astrometric Search for Exoplanet Systems (PHASES) are used to constrain the astrometric orbit of the previously known {approx}<2 day subsystem in the triple system 63 Gem A and have detected a previously unknown two-year Keplerian wobble superimposed on the visual orbit of the much longer period (213 years) binary system HR 2896. 63 Gem A was already known to be triple from spectroscopic work, and absorption lines from all three stars can be identified and their individual Doppler shifts measured; new velocities for all three components are presented to aid in constraining the orbit and measuring the stellar masses. In fact, 63 Gem itself is a sextuple system: the hierarchical triple (Aa1-Aa2)-Ab (in which Aa1 and Aa2 orbit each other with a rapid period just under 2 days, and Ab orbits these every two years), plus three distant common proper motion companions. The very small astrometric perturbation caused by the inner pair in 63 Gem A stretches the limits of current astrometric capabilities, but PHASES observations are able to constrain the orientation of the orbit. The two bright stars comprising the HR 2896 long-period (213 year) system have a combined spectral type of K0III and the newly detected object's mass estimate places it in the regime of being an M dwarf. The motion of the stars are slow enough that their spectral features are always blended, preventing Doppler studies. The PHASES measurements and radial velocities (when available) have been combined with lower precision single-aperture measurements covering a much longer time frame (from eyepiece measurements, speckle interferometry, and adaptive optics) to improve the characterization of the long-period orbits in both binaries. The visual orbits of the short- and long-period systems are presented for both systems and used to calculate two possible values of the mutual inclinations between inner and outer orbits of 152{sup 0} {+-} 12

  8. HR Information Systems

    Office of Energy Efficiency and Renewable Energy (EERE)

     The OCHCO establishes and provides assistance and guidance on the use of technology-supported business process reengineering; investment analysis; performance measurement; strategic development...

  9. POLARIMETRY WITH THE GEMINI PLANET IMAGER: METHODS, PERFORMANCE AT FIRST LIGHT, AND THE CIRCUMSTELLAR RING AROUND HR 4796A

    SciTech Connect (OSTI)

    Perrin, Marshall D.; Duchene, Gaspard; Graham, James R.; Kalas, Paul G.; Millar-Blanchaer, Max; Fitzgerald, Michael P.; Chilcote, Jeffrey; Wiktorowicz, Sloane J.; Dillon, Daren; Gavel, Donald; Macintosh, Bruce; Bauman, Brian; Cardwell, Andrew; Goodsell, Stephen; Hartung, Markus; Hibon, Pascale; De Rosa, Robert J.; Doyon, René; Dunn, Jennifer; Erikson, Darren; and others

    2015-02-01

    We present the first results from the polarimetry mode of the Gemini Planet Imager (GPI), which uses a new integral field polarimetry architecture to provide high contrast linear polarimetry with minimal systematic biases between the orthogonal polarizations. We describe the design, data reduction methods, and performance of polarimetry with GPI. Point-spread function (PSF) subtraction via differential polarimetry suppresses unpolarized starlight by a factor of over 100, and provides sensitivity to circumstellar dust reaching the photon noise limit for these observations. In the case of the circumstellar disk around HR 4796A, GPI's advanced adaptive optics system reveals the disk clearly even prior to PSF subtraction. In polarized light, the disk is seen all the way in to its semi-minor axis for the first time. The disk exhibits surprisingly strong asymmetry in polarized intensity, with the west side ? 9 times brighter than the east side despite the fact that the east side is slightly brighter in total intensity. Based on a synthesis of the total and polarized intensities, we now believe that the west side is closer to us, contrary to most prior interpretations. Forward scattering by relatively large silicate dust particles leads to the strong polarized intensity on the west side, and the ring must be slightly optically thick in order to explain the lower brightness in total intensity there. These findings suggest that the ring is geometrically narrow and dynamically cold, perhaps shepherded by larger bodies in the same manner as Saturn's F ring.

  10. Polarimetry with the Gemini Planet Imager: methods, performance at first light, and the circumstellar ring around HR 4796A

    SciTech Connect (OSTI)

    Perrin, Marshall D.; Duchene, Gaspard; Millar-Blanchaer, Max; Fitzgerald, Michael P.; Graham, James R.; Wiktorowicz, Sloane J.; Kalas, Paul G.; Macintosh, Bruce; Bauman, Brian; Cardwell, Andrew; Chilcote, Jeffrey; De Rosa, Robert J.; Dillon, Daren; Doyon, René; Dunn, Jennifer; Erikson, Darren; Gavel, Donald; Goodsell, Stephen; Hartung, Markus; Hibon, Pascale; Ingraham, Patrick; Kerley, Daniel; Konapacky, Quinn; Larkin, James E.; Maire, Jérôme; Marchis, Franck; Marois, Christian; Mittal, Tushar; Morzinski, Katie M.; Oppenheimer, B. R.; Palmer, David W.; Patience, Jennifer; Poyneer, Lisa; Pueyo, Laurent; Rantakyrö, Fredrik T.; Sadakuni, Naru; Saddlemyer, Leslie; Savransky, Dmitry; Soummer, Rémi; Sivaramakrishnan, Anand; Song, Inseok; Thomas, Sandrine; Wallace, J. Kent; Wang, Jason J.; Wolff, Schuyler G.

    2015-01-28

    We present the first results from the polarimetry mode of the Gemini Planet Imager (GPI), which uses a new integral field polarimetry architecture to provide high contrast linear polarimetry with minimal systematic biases between the orthogonal polarizations. We describe the design, data reduction methods, and performance of polarimetry with GPI. Point spread function subtraction via di erential polarimetry suppresses unpolarized starlight by a factor of over 100, and provides sensitivity to circumstellar dust reaching the photon noise limit for these observations. In the case of the circumstellar disk around HR 4796A, GPI's advanced adaptive optics system reveals the disk clearly even prior to PSF subtraction. In polarized light, the disk is seen all the way in to its semi-minor axis for the first time. The disk exhibits surprisingly strong asymmetry in polarized intensity, with the west side ≳ 9 times brighter than the east side despite the fact that the east side is slightly brighter in total intensity. Based on a synthesis of the total and polarized intensities, we now believe that the west side is closer to us, contrary to most prior interpretations. Forward scattering by relatively large silicate dust particles leads to the strong polarized intensity on the west side, and the ring must be slightly optically thick in order to explain the lower brightness in total intensity there. These findings suggest that the ring is geometrically narrow and dynamically cold, perhaps shepherded by larger bodies in the same manner as Saturn's F ring.

  11. Polarimetry with the Gemini Planet Imager. Methods, performance at first light, and the circumstellar ring around HR 4796A

    SciTech Connect (OSTI)

    Perrin, Marshall D.; Duchene, Gaspard; Millar-Blanchaer, Max; Fitzgerald, Michael P.; Graham, James R.; Wiktorowicz, Sloane J.; Kalas, Paul G.; Macintosh, Bruce; Bauman, Brian; Cardwell, Andrew; Chilcote, Jeffrey; De Rosa, Robert J.; Dillon, Daren; Doyon, René; Dunn, Jennifer; Erikson, Darren; Gavel, Donald; Goodsell, Stephen; Hartung, Markus; Hibon, Pascale; Ingraham, Patrick; Kerley, Daniel; Konapacky, Quinn; Larkin, James E.; Maire, Jérôme; Marchis, Franck; Marois, Christian; Mittal, Tushar; Morzinski, Katie M.; Oppenheimer, B. R.; Palmer, David W.; Patience, Jennifer; Poyneer, Lisa; Pueyo, Laurent; Rantakyrö, Fredrik T.; Sadakuni, Naru; Saddlemyer, Leslie; Savransky, Dmitry; Soummer, Rémi; Sivaramakrishnan, Anand; Song, Inseok; Thomas, Sandrine; Wallace, J. Kent; Wang, Jason J.; Wolff, Schuyler G.

    2015-01-28

    We report he first results from the polarimetry mode of the Gemini Planet Imager (GPI), which uses a new integral field polarimetry architecture to provide high contrast linear polarimetry with minimal systematic biases between the orthogonal polarizations. We describe the design, data reduction methods, and performance of polarimetry with GPI. Point-spread function (PSF) subtraction via differential polarimetry suppresses unpolarized starlight by a factor of over 100, and provides sensitivity to circumstellar dust reaching the photon noise limit for these observations. In the case of the circumstellar disk around HR 4796A, GPI’s advanced adaptive optics system reveals the disk clearly even prior to PSF subtraction. In polarized light, the disk is seen all the way in to its semi-minor axis for the first time. The disk exhibits surprisingly strong asymmetry in polarized intensity, with the west side ≳9 times brighter than the east side despite the fact that the east side is slightly brighter in total intensity. Based on a synthesis of the total and polarized intensities, we now believe that the west side is closer to us, contrary to most prior interpretations. Forward scattering by relatively large silicate dust particles leads to the strong polarized intensity on the west side, and the ring must be slightly optically thick in order to explain the lower brightness in total intensity there. In conclusion, these findings suggest that the ring is geometrically narrow and dynamically cold, perhaps shepherded by larger bodies in the same manner as Saturn’s F ring.

  12. Polarimetry with the Gemini Planet Imager. Methods, performance at first light, and the circumstellar ring around HR 4796A

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

    Perrin, Marshall D.; Duchene, Gaspard; Millar-Blanchaer, Max; Fitzgerald, Michael P.; Graham, James R.; Wiktorowicz, Sloane J.; Kalas, Paul G.; Macintosh, Bruce; Bauman, Brian; Cardwell, Andrew; et al

    2015-01-28

    We report he first results from the polarimetry mode of the Gemini Planet Imager (GPI), which uses a new integral field polarimetry architecture to provide high contrast linear polarimetry with minimal systematic biases between the orthogonal polarizations. We describe the design, data reduction methods, and performance of polarimetry with GPI. Point-spread function (PSF) subtraction via differential polarimetry suppresses unpolarized starlight by a factor of over 100, and provides sensitivity to circumstellar dust reaching the photon noise limit for these observations. In the case of the circumstellar disk around HR 4796A, GPI’s advanced adaptive optics system reveals the disk clearly evenmore » prior to PSF subtraction. In polarized light, the disk is seen all the way in to its semi-minor axis for the first time. The disk exhibits surprisingly strong asymmetry in polarized intensity, with the west side ≳9 times brighter than the east side despite the fact that the east side is slightly brighter in total intensity. Based on a synthesis of the total and polarized intensities, we now believe that the west side is closer to us, contrary to most prior interpretations. Forward scattering by relatively large silicate dust particles leads to the strong polarized intensity on the west side, and the ring must be slightly optically thick in order to explain the lower brightness in total intensity there. In conclusion, these findings suggest that the ring is geometrically narrow and dynamically cold, perhaps shepherded by larger bodies in the same manner as Saturn’s F ring.« less

  13. UNVEILING SOURCES OF HEATING IN THE VICINITY OF THE ORION BN/KL HOT CORE AS TRACED BY HIGHLY EXCITED INVERSION TRANSITIONS OF AMMONIA

    SciTech Connect (OSTI)

    Goddi, C.; Humphreys, E. M. L.; Greenhill, L. J.; Chandler, C. J.; Matthews, L. D.

    2011-09-20

    Using the Expanded Very Large Array, we have mapped the vicinity of the Orion BN/KL Hot Core with subarcsecond angular resolution in seven metastable inversion transitions of ammonia (NH{sub 3}): (J, K) = (6,6) to (12,12). This emission comes from levels up to 1500 K above the ground state, enabling identification of source(s) responsible for heating the region. We used this multi-transition data set to produce images of the rotational/kinetic temperature (T {sub rot}/T {sub kin}) and the column density N {sub col} of NH{sub 3} for ortho and para species separately and on a position-by-position basis. We find T {sub rot} and N {sub col} in the range 160-490 K and (1-4) x 10{sup 17} cm{sup -2}, respectively. Our spatially resolved images show that the highest (column) density and hottest gas is found in a northeast-southwest elongated ridge to the southeast of Source I. We have also measured the ortho-para ratio of ammonia, estimated to vary in the range 0.9-1.6. Enhancement of ortho with respect to para and the offset of hot NH{sub 3} emission peaks from known (proto)stellar sources provide evidence that the NH{sub 3} molecules have been released from dust grains into the gas phase through the passage of shocks and not by stellar radiation. We propose that the combined effect of Source I's proper motion and its low-velocity outflow impinging on a pre-existing dense medium is responsible for the excitation of NH{sub 3} and the Orion Hot Core. Finally, we found for the first time evidence of a slow ({approx}5 km s{sup -1}) and compact ({approx}1000 AU) outflow toward IRc7.

  14. STELLAR CORONAE, SOLAR FLARES: A DETAILED COMPARISON OF {sigma} GEM, HR 1099, AND THE SUN IN HIGH-RESOLUTION X-RAYS

    SciTech Connect (OSTI)

    Huenemoerder, David P.; Phillips, Kenneth J. H.; Sylwester, Janusz; Sylwester, Barbara E-mail: kennethjhphillips@yahoo.com E-mail: bs@cbk.pan.wroc.pl

    2013-05-10

    The Chandra High Energy Transmission Grating Spectrometer (HETG) spectra of the coronally active binary stars {sigma} Gem and HR 1099 are among the highest fluence observations for such systems taken at high spectral resolution in X-rays with this instrument. This allows us to compare their properties in detail to solar flare spectra obtained with the Russian CORONAS-F spacecraft's RESIK instrument at similar resolution in an overlapping bandpass. Here we emphasize the detailed comparisons of the 3.3-6.1 A region (including emission from highly ionized S, Si, Ar, and K) from solar flare spectra to the corresponding {sigma} Gem and HR 1099 spectra. We also model the larger wavelength range of the HETG, from 1.7 to 25 A - having emission lines from Fe, Ca, Ar, Si, Al, Mg, Ne, O, and N-to determine coronal temperatures and abundances. {sigma} Gem is a single-lined coronally active long-period binary which has a very hot corona. HR 1099 is a similar, but shorter period, double-lined system. With very deep HETG exposures we can even study emission from some of the weaker species, such as K, Na, and Al, which are important since they have the lowest first ionization potentials, a parameter well known to be correlated with elemental fractionation in the solar corona. The solar flare temperatures reach Almost-Equal-To 20 MK, comparable to the {sigma} Gem and HR 1099 coronae. During the Chandra exposures, {sigma} Gem was slowly decaying from a flare and its spectrum is well characterized by a collisional ionization equilibrium plasma with a broad temperature distribution ranging from 2 to 60 MK, peaking near 25 MK, but with substantial emission from 50 MK plasma. We have detected K XVIII and Na XI emission which allow us to set limits on their abundances. HR 1099 was also quite variable in X-rays, also in a flare state, but had no detectable K XVIII. These measurements provide new comparisons of solar and stellar coronal abundances, especially at the lowest first ionization

  15. BN Bonded BN fiber article from boric oxide fiber

    DOE Patents [OSTI]

    Hamilton, Robert S.

    1978-12-19

    A boron nitride bonded boron nitride fiber article and the method for its manufacture which comprises forming a shaped article with a composition comprising boron oxide fibers and boric acid, heating the composition in an anhydrous gas to a temperature above the melting point of the boric acid and nitriding the resulting article in ammonia gas.

  16. BN Bonded BN fiber article and method of manufacture

    DOE Patents [OSTI]

    Hamilton, Robert S.

    1981-08-18

    A boron nitride bonded boron nitride fiber article and the method for its manufacture which comprises forming a shaped article with a composition comprising a bonding compound selected from boron oxide and boric acid and a structural fiber selected from the group consisting of boron oxide, boron nitride and partially nitrided boron oxide fibers, heating the composition in an anhydrous gas to a temperature above the melting point of the compound and nitriding the resulting article in ammonia gas.

  17. BONA FIDE, STRONG-VARIABLE GALACTIC LUMINOUS BLUE VARIABLE STARS ARE FAST ROTATORS: DETECTION OF A HIGH ROTATIONAL VELOCITY IN HR CARINAE

    SciTech Connect (OSTI)

    Groh, J. H.; Damineli, A.; Moises, A. P.; Teodoro, M.; Hillier, D. J.; Barba, R.; Fernandez-Lajus, E.; Gamen, R. C.; Solivella, G.

    2009-11-01

    We report optical observations of the luminous blue variable (LBV) HR Carinae which show that the star has reached a visual minimum phase in 2009. More importantly, we detected absorptions due to Si IV lambdalambda4088-4116. To match their observed line profiles from 2009 May, a high rotational velocity of v{sub rot} approx = 150 +- 20 km s{sup -1} is needed (assuming an inclination angle of 30 deg.), implying that HR Car rotates at approx =0.88 +- 0.2 of its critical velocity for breakup (v{sub crit}). Our results suggest that fast rotation is typical in all strong-variable, bona fide galactic LBVs, which present S-Dor-type variability. Strong-variable LBVs are located in a well-defined region of the HR diagram during visual minimum (the 'LBV minimum instability strip'). We suggest this region corresponds to where v{sub crit} is reached. To the left of this strip, a forbidden zone with v{sub rot}/v{sub crit}>1 is present, explaining why no LBVs are detected in this zone. Since dormant/ex LBVs like P Cygni and HD 168625 have low v{sub rot}, we propose that LBVs can be separated into two groups: fast-rotating, strong-variable stars showing S-Dor cycles (such as AG Car and HR Car) and slow-rotating stars with much less variability (such as P Cygni and HD 168625). We speculate that supernova (SN) progenitors which had S-Dor cycles before exploding (such as in SN 2001ig, SN 2003bg, and SN 2005gj) could have been fast rotators. We suggest that the potential difficulty of fast-rotating Galactic LBVs to lose angular momentum is additional evidence that such stars could explode during the LBV phase.

  18. Benin: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    MWhyear 100 2008 NREL Coal Reserves Unavailable Million Short Tons NA 2008 EIA Natural Gas Reserves 1,133,000,000 Cubic Meters (cu m) 97 2010 CIA World Factbook Oil Reserves...

  19. A 2.15 hr ORBITAL PERIOD FOR THE LOW-MASS X-RAY BINARY XB 1832-330 IN THE GLOBULAR CLUSTER NGC 6652

    SciTech Connect (OSTI)

    Engel, M. C.; Heinke, C. O.; Sivakoff, G. R.; Elshamouty, K. G.; Edmonds, P. D. E-mail: heinke@ualberta.ca

    2012-03-10

    We present a candidate orbital period for the low-mass X-ray binary (LMXB) XB 1832-330 in the globular cluster NGC 6652 using a 6.5 hr Gemini South observation of the optical counterpart of the system. Light curves in g' and r' for two LMXBs in the cluster, sources A and B in previous literature, were extracted and analyzed for periodicity using the ISIS image subtraction package. A clear sinusoidal modulation is evident in both of A's curves, of amplitude {approx}0.11 mag in g' and {approx}0.065 mag in r', while B's curves exhibit rapid flickering, of amplitude {approx}1 mag in g' and {approx}0.5 mag in r'. A Lomb-Scargle test revealed a 2.15 hr periodic variation in the magnitude of A with a false alarm probability less than 10{sup -11}, and no significant periodicity in the light curve for B. Though it is possible that saturated stars in the vicinity of our sources partially contaminated our signal, the identification of A's binary period is nonetheless robust.

  20. H.R. 4751: A Bill to reauthorize appropriations for the weatherization program under section 422 of the Energy Conservation and Production Act. Introduced in the House of Representatives, One Hundred Third Congress, Second Session, July 13, 1994

    SciTech Connect (OSTI)

    1994-12-31

    The report H.R. 4944 is a bill to reauthorize appropriations for the weatherization program under section 422 of the Energy Conservation and Production Act. The proposed legislative text is included.

  1. Creep-Rupture Behavior and Recrystallization in HR6W and Haynes Alloy 230 Cold-Bent Boiler Tubing for Ultrasupercritical (USC) Steam Boiler Applications

    SciTech Connect (OSTI)

    Shingledecker, John P

    2007-01-01

    Creep-rupture experiments were conducted on HR6W and Haynes 230, candidate Ultrasupercritical (USC) alloys, tubes to evaluate the effects of cold-work and recrystallization during high-temperature service. These creep tests were performed by internally pressurizing cold-bent boiler tubes at 775 C for times up to 8000 hours. The bends were fabricated with cold-work levels beyond the current ASME Boiler and Pressure Vessel (ASME B&PV) Code Section I limits for austenitic stainless steels. Destructive metallographic evaluation of the crept tube bends was used to determine the effects of cold-work and the degree of recrystallization. The metallographic analysis combined with an evaluation of the creep and rupture data suggest that solid-solution strengthened nickel-based alloys can be fabricated for high-temperature service at USC conditions utilizing levels of cold-work higher than the current allowed levels for austenitic stainless steels.

  2. SAND2015-10802 HR

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

    ... 2016 and focus on subjects including geophysical data processing, tomographic imaging, automatic picking, and ambient seismic interferometry for the purpose of fracture imaging. ...

  3. THE ROCHE LIMIT FOR CLOSE-ORBITING PLANETS: MINIMUM DENSITY, COMPOSITION CONSTRAINTS, AND APPLICATION TO THE 4.2 hr PLANET KOI 1843.03

    SciTech Connect (OSTI)

    Rappaport, Saul; Sanchis-Ojeda, Roberto; Winn, Joshua N.; Rogers, Leslie A.; Levine, Alan E-mail: sar@mit.edu E-mail: larogers@caltech.edu

    2013-08-10

    The requirement that a planet must orbit outside of its Roche limit gives a lower limit on the planet's mean density. The minimum density depends almost entirely on the orbital period and is immune to systematic errors in the stellar properties. We consider the implications of this density constraint for the newly identified class of small planets with periods shorter than half a day. When the planet's radius is accurately known, this lower limit to the density can be used to restrict the possible combinations of iron and rock within the planet. Applied to KOI 1843.03, a 0.6 R{sub Circled-Plus} planet with the shortest known orbital period of 4.245 hr, the planet's mean density must be {approx}> 7 g cm{sup -3}. By modeling the planetary interior subject to this constraint, we find that the composition of the planet must be mostly iron, with at most a modest fraction of silicates ({approx}< 30% by mass)

  4. H.R. 2445: A Bill making appropriations for energy and water development for the fiscal year ending September 30, 1994, and for other purposes. Introduced in the House of Representatives, One Hundred Third Congress, First Session, June 17, 1993

    SciTech Connect (OSTI)

    1993-12-31

    The report H.R. 2445 is an Act making appropriations for energy and water development for the fiscal year ending September 30, 1994. The proposed legislative text is included. The Department of Defense, Civil Department of Army, Corps of Engineers, the Department of Energy and the Department of Interior are included. Specific projects and programs are identified.

  5. Application of microwave discharge for the synthesis of TiB{sub 2} and BN nano- and microcrystals in a mixture of Ti-B powders in a nitrogen atmosphere

    SciTech Connect (OSTI)

    Batanov, G. M. Berezhetskaya, N. K.; Borzosekov, V. D.; Iskhakova, L. D.; Kolik, L. V.; Konchekov, E. M.; Letunov, A. A.; Malakhov, D. V.; Milovich, F. O.; Obraztsova, E. A.; Obraztsova, E. D.; Petrov, A. E.; Sarksyan, K. A.; Skvortsova, N. N.; Stepakhin, V. D.; Kharchev, N. K.

    2013-10-15

    Synthesis of titanium diboride and boron nitride nano- and microcrystals by means of a pulsed microwave discharge in a mixture of Ti-B powders in a nitrogen atmosphere is considered. For this purpose, a new type of reactor with a free surface of the powder mixture was used. The reactor design permits free expansion of the reaction products into the reactor volume and their deposition on the reactor walls. Conditions for the synthesis of TiB{sub 2} and BN compounds were studied as functions of the energy input in the discharge, the powder component ratio, the rate of the nitrogen flow through the reactor, and the structure and phase composition of the compounds deposited on the reactor walls. The synthesis of boron nitride and titanium diboride in crystal structures is proven. An important role in the process of synthesis is played by the heating of the mixture due to the titanium diboride synthesis reaction, its behavior in the bulk of the reactor, and the titanium concentration in the powder mixture. It is also found that, as the number of discharges in the bulk of the reactor increases, a dust cloud forms. The luminescence of this cloud indicates that the initiated discharge proceeds not only on the powder surface and in the powder bulk, but also in the reactor volume.

  6. I BN1",--44375 DE91

    Office of Scientific and Technical Information (OSTI)

    ... may be brought to an operational state and then added to the complement of instruments. ... may be tailored to individual site characteristics. 5. SITE SELECTION in response to the ...

  7. Benin-National Adaptation Plan Global Support Programme (NAP...

    Open Energy Info (EERE)

    Global Environment Facility (GEF), United Nations Framework Convention on Climate Change (UNFCCC), Global Water Partnership (GWP), German Society for International Cooperation...

  8. Benin-Climate Finance Readiness Programme | Open Energy Information

    Open Energy Info (EERE)

    support from the German Federal Ministry for the Environment, Nature Conservation and Nuclear Safety (BMU). The Programme will prepare developing countries to effectively and...

  9. Systematic Method for Evaluating Extraction and Injection Flow Rates for 100-KR-4 and 100-HR-3 Groundwater Operable Unit Pump-and-Treat Interim Actions for Hydraulic Containment

    SciTech Connect (OSTI)

    Spiliotopoulos, Alexandros A.

    2013-03-20

    This document describes a systematic method to develop flow rate recommendations for Pump-and-Treat (P&T) extraction and injection wells in 100-KR-4 and 100-HR-3 Groundwater Operable Units (OU) of the Hanford Site. Flow rate recommendations are developed as part of ongoing performance monitoring and remedy optimization of the P&T interim actions to develop hydraulic contairnnent of the dissolved chromium plume in groundwater and protect the Columbia River from further discharges of groundwater from inland. This document details the methodology and data required to infer the influence of individual wells near the shoreline on hydraulic containment and river protection and develop flow rate recommendations to improve system performance and mitigate potential shortcomings of the system configuration in place.

  10. Hr. Andrew Wallo The Aerospace Corporation

    Office of Legacy Management (LM)

    No additional cments are included; therefore, a careful editoria review of these documents should be made when the documents are finalized. t 1. Watertown Arsenal, Watertown, HA ...

  11. HR BioPetroleum | Open Energy Information

    Open Energy Info (EERE)

    Developing marine microalgae to help absorb industrial emissions of CO2 and produce biofuel feedstocks Website: www.hrbp.com Coordinates: 32.84197, -117.275213 Show Map...

  12. H.R. 577: A Bill to amend the Internal Revenue Code of 1986 to provide a tax credit for the production of oil and gas from existing marginal oil and gas wells and from new oil and gas wells. Introduced in the House of Representatives, One Hundred Fourth Congress, First session

    SciTech Connect (OSTI)

    1995-12-31

    This document contains H.R. 577, A Bill to amend the Internal Revenue Code of 1986 to provide a tax credit for the production of oil and gas from existing marginal oil and gas wells and from new oil and gas wells. This Bill was introduced in the House of Representatives, 104th Congress, First Session, January 19, 1995.

  13. H.R. 5299: A Bill to amend the Internal Revenue Code of 1986 to phase out the tax subsidies for alcohol fuels involving alcohol produced from feedstocks eligible to receive Federal agricultural subsidies. Introduced in the House of Representatives, One Hundred Third Congress, Second Session, November 29, 1994

    SciTech Connect (OSTI)

    1994-12-31

    The report H.R. 5299 is a bill to amend the Internal Revenue Code of 1986 to phase out the tax subsidies of alcohol fuels involving alcohol produced from feedstocks eligible to receive Federal agriculture subsidies. The proposed legislative text is included.

  14. H.R. 1443: A Bill to amend the Internal Revenue Code of 1986 to provide a tax credit to businesses which mine metallurgical coal and are required to make contributions to the UMWA Combined Benefit Fund created by the Energy Policy Act of 1992. Introduced in the House of Representatives, One Hundred Third Congress, First Session, March 24, 1993

    SciTech Connect (OSTI)

    1993-12-31

    The report H.R. 1143 is a bill to amend the Internal Revenue Code of 1986 to provide a tax credit to businesses which mine metallurgical coal and are required to make contributions to the UMWA Combined Benefit Fund created by the Energy Policy Act of 1992. The proposed legislative text is included.

  15. Report for Batch Leach Analyses on Sediments at 100-HR-3 Operable Unit, Boreholes C7620, C7621, C7622, C7623, C7626, C7627, C7628, C7629, C7630, and C7866. Revision 1.

    SciTech Connect (OSTI)

    Lindberg, Michael J.

    2012-04-25

    This is a revision to a previously released report. This revision contains additional analytical results for the sample with HEIS number B2H4X7. Between November 4, 2010 and October 26, 2011 sediment samples were received from 100-HR-3 Operable Unit for geochemical studies. The analyses for this project were performed at the 331 building located in the 300 Area of the Hanford Site. The analyses were performed according to Pacific Northwest National Laboratory (PNNL) approved procedures and/or nationally recognized test procedures. The data sets include the sample identification numbers, analytical results, estimated quantification limits (EQL), and quality control data. The preparatory and analytical quality control requirements, calibration requirements, acceptance criteria, and failure actions are defined in the on-line QA plan 'Conducting Analytical Work in Support of Regulatory Programs' (CAW). This QA plan implements the Hanford Analytical Services Quality Assurance Requirements Documents (HASQARD) for PNNL. Samples were received with a chain of custody (COC) and were analyzed according to the sample identification numbers supplied by the client. All Samples were refrigerated upon receipt until prepared for analysis. All samples were received with custody seals intact unless noted in the Case Narrative. Holding time is defined as the time from sample preparation to the time of analyses. The prescribed holding times were met for all analytes unless noted in the Case Narrative. All reported analytical results meet the requirements of the CAW or client specified SOW unless noted in the case narrative. Due to the requirements of the statement of work and sampling events in the field, the 28 day and the 48 hr requirements cannot be met. The statement of work requires samples to be selected at the completion of the borehole. It is not always possible to complete a borehole and have the samples shipped to the laboratory within the hold time requirements. Duplicate

  16. Are you an HR Professional or are you interested in the HR career...

    Energy Savers [EERE]

    You will be prompted to click on the special link. Then follow the prompts to complete your profile, this will include setting up a password and answering security questions. If ...

  17. Microsoft Word - Gr-hBN boundary state (050214)

    Office of Scientific and Technical Information (OSTI)

    ... B atoms are specified in blue, N atoms are green, carbons are black, and Cu atoms are ... The boundary states are located around 0.1 eV above the Fermi energy. The calculations ...

  18. Implementation of BN Control in the National Spherical Torus...

    Office of Scientific and Technical Information (OSTI)

    the normalized B in the National Spherical Torus Experiment M. Ono, et al., Nuclear Fusion 40, 557 (2000). A PID operator is applied to the difference between the present value...

  19. Materials Data on BN (SG:9) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (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

  20. Inelastic scattering at the B K edge of hexagonal BN

    SciTech Connect (OSTI)

    Jia, J.J.; Callcott, T.A.; Zhou, L.

    1997-04-01

    Many recent soft x-ray fluorescence (SXF) studies have shown that inelastic scattering processes make important contributions to the observed spectra for excitation near the x-ray threshold. These effects are all attributed to a process, usually called an electronic Raman scattering (ERS) process, in which energy is lost to an electronic excitation. The theory has been described using second order perturbation theory by Tulkki and Aberg. In different materials, the detailed nature of the electronic excitation producing the energy loss may be very different. In crystalline Si, diamond and graphite, changes in spectral shape and dispersion of spectral features with variation of the excitation energy are observed, which are attributed to k conservation between the photoelectron generated in the excitation process and the valence hole remaining after the coupled emission process. Hence the process is strongly localized in k-space. In haxagonal boron nitride, which has a lattice and band structure very similar to graphite, inelastic scattering produces very different effects on the observed spectra. Here, the inelastic losses are coupled to a strong resonant elastic scattering process, in which the intermediate state is a localized core exciton and the final state is a localized valence exciton, so that the electronic excitation is strongly localized in real rather than reciprocal space.

  1. Authorizing Legislation: HR 3979, SEC. 3039 Manhattan Project...

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

    Aviation Management Green Leases Executive Secretariat Energy Reduction at HQ Real Estate Approvals Documents and Publications Facilities and Infrastructure Federal Advisory ...

  2. H.R.6, P.L. 110-140

    Energy Savers [EERE]

    Gwendolyn Hooten About Us Gwendolyn Hooten Team Leader, Environment Team 2 Gwen Hooten is the new Resource Conservation and Recovery Act (RCRA)/Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA)/ Formerly Utilized Sites Remedial Action Program (FUSRAP) Team Leader for LM. Prior to this new position, she served as a Site Manager, responsible for a number of LM sites, including Fernald, Mound, and Piqua, Ohio, sites; the Site A/Plot M, Illinois, Decommissioned Reactor

  3. Renewable Motor Fuel Production Capacity Under H.R.4

    Reports and Publications (EIA)

    2002-01-01

    This paper analyzes renewable motor fuel production capacity with the assumption that ethanol will be used to meet the renewable fuels standard.

  4. 110th Congress 2D Session H.R. 5746

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

    VerDate Aug 31 2005 03:31 Apr 11, 2008 Jkt 069200 PO 00000 Frm 00001 Fmt 6652 Sfmt 6201 E:\BILLS\H5746.IH H5746 wwoods2 on PRODPC68 with BILLS I 110TH CONGRESS 2D SESSION H. R. 5746 To amend the Internal Revenue Code of 1986 to establish the infrastructure foundation for the hydrogen economy, and for other purposes. IN THE HOUSE OF REPRESENTATIVES APRIL 9, 2008 Mr. LARSON of Connecticut (for himself, Mr. DENT, Mr. WYNN, Mr. INGLIS of South Carolina, Ms. DELAURO, Mr. DOYLE, Mr. HOLDEN, Mr. WAMP,

  5. Hr. Richard Ziehm. President : Precision Extrusion Company 720...

    Office of Legacy Management (LM)

    President : Precision Extrusion Company 720 E. Green Avenue Bensenville,,Illinois, 60106 : ... Energy's investigations regarding past Atomic Energy Commission activities at your site. ...

  6. Large-scale fabrication of BN tunnel barriers for graphene spintronics

    SciTech Connect (OSTI)

    Fu, Wangyang; Makk, Péter; Maurand, Romain; Bräuninger, Matthias; Schönenberger, Christian

    2014-08-21

    We have fabricated graphene spin-valve devices utilizing scalable materials made from chemical vapor deposition (CVD). Both the spin-transporting graphene and the tunnel barrier material are CVD-grown. The tunnel barrier is realized by Hexagonal boron nitride, used either as a monolayer or bilayer and placed over the graphene. Spin transport experiments were performed using ferromagnetic contacts deposited onto the barrier. We find that spin injection is still greatly suppressed in devices with a monolayer tunneling barrier due to resistance mismatch. This is, however, not the case for devices with bilayer barriers. For those devices, a spin relaxation time of ∼260 ps intrinsic to the CVD graphene material is deduced. This time scale is comparable to those reported for exfoliated graphene, suggesting that this CVD approach is promising for spintronic applications which require scalable materials.

  7. Materials Data on Ba3(BN2)2 (SG:19) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (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

  8. Materials Data on Ce3(BN2)2 (SG:71) by Materials Project

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

    Kristin Persson

    2015-02-09

    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. Boron-Nitride (BN) Nanotubes (BNNT) at TJNAF| U.S. DOE Office...

    Office of Science (SC) Website

    Composites with high strength and stiffness for light weight personnel armor, and light weight airborne and space systems. Energy efficiency applications in solar panels and high ...

  10. O:\\HR8PROJS\\COMMON\\FIELDMAN\\FMC Operations\\451-EH-02 DOE P 454...

    Office of Legacy Management (LM)

    the National Nuclear Security Administration, will use institutional controls in the management of resources, ... inadvertent human and environmental exposure to residual ...

  11. Property:Building/FloorAreaHealthServices24hr | Open Energy Informatio...

    Open Energy Info (EERE)

    Jump to: navigation, search This is a property of type Number. Floor area for 24-hour health services Retrieved from "http:en.openei.orgwindex.php?titleProperty:Building...

  12. Clouds and Chemistry in the Atmosphere of Extrasolar Planet HR8799b...

    Office of Scientific and Technical Information (OSTI)

    taken across the H and K bands. These data are combined with previously published photometry for an analysis of the planet's atmospheric properties. Thick photospheric dust...

  13. Creating competitive markets in electric energy: A critical analysis of H.R. 655

    SciTech Connect (OSTI)

    Lenard, T.M.; Lips, B.A.

    1998-05-01

    Meaningful competition in electric energy will be achieved only if roadblocks to operation of competitive markets at the federal and state levels are removed. The Schaefer bill has stimulated helpful activity among the states, but it adds impediments as it removes them and would frustrate the functioning of open markets. The movement away from government regulation of the electric power industry is a worldwide phenomenon, which, increasingly, is being driven by technological factors that are conducive to competition. Electricity markets have increased in size, bringing in new competitors and reducing concentration. Moreover, the development of low-cost, small-scale generation technologies makes entry easy and the exercise of market power difficult. Thus, the electricity market is ready for real deregulation. The introduction of competition into this market offers the promise of billions of dollars annually in economic benefits for electricity consumers.

  14. House Passage of H.R. 5254 - The Refinery Permit Process Schedule...

    Energy Savers [EERE]

    WASHINGTON, DC - The following is a statement from the Secretary Samuel W. Bodman of the ... Related Articles Statement from Energy Secretary Samuel W. Bodman on House passage of the ...

  15. Public Access to FUSRAP Elimination Reports. " D.B. Diggin, HR...

    Office of Legacy Management (LM)

    ... I' .' . .. . ' 03123193 .' ., ' . 11 :. ,. ;preliminary : >DratI ' . ,I EiiminatIon Report ' , Former J+Jew Jersey; Zii, Inc. Storage She. Neiv Jersey Zinc, Inc. had plants ...

  16. Energy and Economic Impacts of H.R.5049, the Keep America Competitive Global Warming Policy

    Reports and Publications (EIA)

    2006-01-01

    This report responds to a May 2, 2006 request from Congressmen Tom Udall and Tom Petri asking the Energy Information Administration to analyze the impacts of their legislation implementing a market-based allowance program to cap greenhouse gas emissions at 2009 levels.

  17. U.S. DEPARTMENT OF COMMERCE NATlONAL BUREAU OF STANDARDS Hr....

    Office of Legacy Management (LM)

    There were a number of spots on the floor which gave y-ray readings of 4 mrhr. The doors ... Harley of the Health and Safety Lab, New York Operations Office of the Atomic Energy ...

  18. The Small Business Jobs Act of 2010 H.R. 5297

    Broader source: Energy.gov [DOE]

    On September 27, 2010, the President signed Public Law 111-240, the Small Business Jobs Act of 2010. The attached summary lists highlights of the Act and provides information on how DOE plans to implement the Act. Also attached is a copy of the Act.

  19. Roles of core-shell and {delta}-ray kinetics in layered BN {alpha}-voltaic efficiency

    SciTech Connect (OSTI)

    Melnick, Corey; Kaviany, Massoud; Kim, Moo-Hwan

    2013-02-14

    {alpha}-voltaics harvest electron-hole pairs created as energetic {alpha} particles collide with and ionize electrons in a semiconductor, creating {delta}-rays. After ionization, charged pair production continues through {delta}-ray impact ionization events and the Auger relaxation of core-shell holes created through K-shell ionization events. Secondary ionization events are quantified using the TPP-2M model, the fraction of K-shell ionization events is determined using the energy-loss Coulomb-repulsion perturbed-stationary-state relativistic theory, and the relaxation of the resulting holes is treated with a fully ab initio approach using multiple Fermi golden rule calculations for ranges of carrier concentrations and temperatures. The limiting rate is 15 ns{sup -1} for small carrier concentrations and high temperatures, as compared to the radiative core-shell relaxation rate estimated here at 20 ns{sup -1}, indicating that Auger modes contribute significantly. Moreover, the K-shell ionization events are shown to dominate for low energy {alpha} particles and vanish for high energy ones. Thus, the efficiency loss due to energy dissipation in the fuel layer is mitigated, which is demonstrated by the analysis of a layered fuel-voltaic device with an efficiency from 20% to 14% for fuel layers between 5 and 10 {mu}m thick. The design of a {alpha}-voltaic integrated with a thermoelectric generator is suggested for improved efficiency and the system-level mitigation of radiation damage and geometric inefficiency.

  20. 10B(n, Z) measurements in the energy range 0.7 to 5.0 MeV

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

    Massey, T. N.; Ralston, J.; Grimes, S. M.; Haight, R. C.

    2014-09-03

    Four ΔE E telescopes were used at the WNR (n,Z) station to investigate the production of charged particles from 10B. The telescope consisted of a gas proportional detector and a silicon surface barrier detector. The flux was determined using a 238U fission chamber. A clear separation of the ground state alpha group and first excited state a was not achieved due to the target thickness. Proton emission was also observed. Furthermore, the proton branch was up to an order of magnitude larger than predicted in ENDF/B-VII A simple R-matrix analysis has been performed on the available data

  1. Weak interactions in Graphane/BN systems under static electric fields—A periodic ab-initio study

    SciTech Connect (OSTI)

    Steinkasserer, Lukas Eugen Marsoner; Gaston, Nicola; Paulus, Beate

    2015-04-21

    Ab-initio calculations via periodic Hartree-Fock (HF) and local second-order Møller-Plesset perturbation theory (LMP2) are used to investigate the adsorption properties of combined Graphane/boron nitride systems and their response to static electric fields. It is shown how the latter can be used to alter both structural as well as electronic properties of these systems.

  2. Designing of spin-filtering devices in zigzag graphene nanoribbons heterojunctions by asymmetric hydrogenation and B-N doping

    SciTech Connect (OSTI)

    Zhang, Dan; Zhang, Xiaojiao; Ouyang, Fangping; Li, Mingjun; Xu, Hui; Long, Mengqiu

    2015-01-07

    Using nonequilibrium Green's function in combination with the spin-polarized density functional theory, the spin-dependent transport properties of boron and nitrogen doped zigzag graphene nanoribbons (ZGNRs) heterojunctions with single or double edge-saturated hydrogen have been investigated. Our results show that the perfect spin-filtering effect (100%), rectifying behavior and negative differential resistance can be realized in the ZGNRs-based systems. And the corresponding physical analysis has been given.

  3. Oil and Natural Gas Market Supply and Renewable Portfolio Standard Impacts of Selected Provisions of H.R. 3221

    Reports and Publications (EIA)

    2007-01-01

    This paper responds to an October 31, 2007, request from Representatives Barton, McCrery, and Young.

  4. Sailor, V.L.; Perkins, K.R.; Weeks, J.R.; Connell, H.R. 11 NUCLEAR...

    Office of Scientific and Technical Information (OSTI)

    21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; BWR TYPE REACTORS; SPENT FUEL STORAGE; PWR TYPE REACTORS; FUEL POOLS; STORAGE FACILITIES; ACCIDENTS; FAILURES; FISSION...

  5. Microsoft PowerPoint - Org Chart Color Coded 10_02_2015.pptx

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

    C., HR Specialist Matetic, D., HR Specialist (Lead) Chapman, M., HR Specialist Norris, C., HR Specialist Supervisor: Moody, H. Burns, D., HR Assistant Jezowicz, B., HR ...

  6. African Biofuel & Renewable Energy Fund (ABREF) | Open Energy...

    Open Energy Info (EERE)

    Energy Compnay (ABREC) Sector Energy Focus Area Renewable Energy, Biomass, - Biofuels Website http:www.bidc-ebid.comenfo Country Benin, Burkina Faso, Cape Verde, Ivory...

  7. Microsoft Word - TOC Section I Conformed thru Mod 274.docx

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

    Nicaragua, or Singapore); (3) A least developed country (Afghanistan, Angola, Bangladesh, Benin, Bhutan, Burkina Faso, Burundi, Cambodia, Cape Verde, Central African...

  8. African Development Bank | Open Energy Information

    Open Energy Info (EERE)

    field and country offices across the continent." Shareholders Regional Members Algeria Angola Benin Botswana Burkina Faso Burundi Cameroon Cape Verde Central African Republic Chad...

  9. Sandia Energy - SNL-ESSC (Sandia National Laboratories - Extreme...

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

    and Barbuda Argentina Armenia Australia Austria Azerbaijan Bahamas Bahrain Bangladesh Barbados Belarus Belgium Belize Benin Bermuda Bhutan Bolivia Bosnia and Herzegovina Botswana...

  10. Status of U.S. Nuclear Outages - U.S. Energy Information Administratio...

    Gasoline and Diesel Fuel Update (EIA)

    Bahamas, The Bahrain Bangladesh Barbados Belarus Belgium Belize Benin Bermuda Bhutan Bolivia Bosnia and Herzegovina Botswana Brazil Brunei Bulgaria Burkina Faso Burma (Myanmar) ...

  11. International - U.S. Energy Information Administration (EIA)

    Gasoline and Diesel Fuel Update (EIA)

    Bahamas, The Bahrain Bangladesh Barbados Belarus Belgium Belize Benin Bermuda Bhutan Bolivia Bosnia and Herzegovina Botswana Brazil Brunei Bulgaria Burkina Faso Burma (Myanmar) ...

  12. Eia.gov BETA - U.S. Energy Information Administration (EIA) ...

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

    Bahamas, The Bahrain Bangladesh Barbados Belarus Belgium Belize Benin Bermuda Bhutan Bolivia Bosnia and Herzegovina Botswana Brazil Brunei Bulgaria Burkina Faso Burma (Myanmar) ...

  13. Water on BN doped benzene: A hard test for exchange-correlation functionals and the impact of exact exchange on weak binding

    SciTech Connect (OSTI)

    Al-Hamdani, Yasmine S.; Alfè, Dario; von Lilienfeld, O. Anatole; Michaelides, Angelos

    2014-10-22

    Density functional theory (DFT) studies of weakly interacting complexes have recently focused on the importance of van der Waals dispersion forces, whereas the role of exchange has received far less attention. Here, by exploiting the subtle binding between water and a boron and nitrogen doped benzene derivative (1,2-azaborine) we show how exact exchange can alter the binding conformation within a complex. Benchmark values have been calculated for three orientations of the water monomer on 1,2-azaborine from explicitly correlated quantum chemical methods, and we have also used diffusion quantum Monte Carlo. For a host of popular DFT exchange-correlation functionals we show that the lack of exact exchange leads to the wrong lowest energy orientation of water on 1,2-azaborine. As such, we suggest that a high proportion of exact exchange and the associated improvement in the electronic structure could be needed for the accurate prediction of physisorption sites on doped surfaces and in complex organic molecules. Meanwhile to predict correct absolute interaction energies an accurate description of exchange needs to be augmented by dispersion inclusive functionals, and certain non-local van der Waals functionals (optB88- and optB86b-vdW) perform very well for absolute interaction energies. Through a comparison with water on benzene and borazine (B?N?H?) we show that these results could have implications for the interaction of water with doped graphene surfaces, and suggest a possible way of tuning the interaction energy.

  14. Water on BN doped benzene: A hard test for exchange-correlation functionals and the impact of exact exchange on weak binding

    SciTech Connect (OSTI)

    Al-Hamdani, Yasmine S.; Michaelides, Angelos; Alfè, Dario; Lilienfeld, O. Anatole von

    2014-11-14

    Density functional theory (DFT) studies of weakly interacting complexes have recently focused on the importance of van der Waals dispersion forces, whereas the role of exchange has received far less attention. Here, by exploiting the subtle binding between water and a boron and nitrogen doped benzene derivative (1,2-azaborine) we show how exact exchange can alter the binding conformation within a complex. Benchmark values have been calculated for three orientations of the water monomer on 1,2-azaborine from explicitly correlated quantum chemical methods, and we have also used diffusion quantum Monte Carlo. For a host of popular DFT exchange-correlation functionals we show that the lack of exact exchange leads to the wrong lowest energy orientation of water on 1,2-azaborine. As such, we suggest that a high proportion of exact exchange and the associated improvement in the electronic structure could be needed for the accurate prediction of physisorption sites on doped surfaces and in complex organic molecules. Meanwhile to predict correct absolute interaction energies an accurate description of exchange needs to be augmented by dispersion inclusive functionals, and certain non-local van der Waals functionals (optB88- and optB86b-vdW) perform very well for absolute interaction energies. Through a comparison with water on benzene and borazine (B{sub 3}N{sub 3}H{sub 6}) we show that these results could have implications for the interaction of water with doped graphene surfaces, and suggest a possible way of tuning the interaction energy.

  15. Water on BN doped benzene: A hard test for exchange-correlation functionals and the impact of exact exchange on weak binding

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

    Al-Hamdani, Yasmine S.; Alfè, Dario; von Lilienfeld, O. Anatole; Michaelides, Angelos

    2014-10-22

    Density functional theory (DFT) studies of weakly interacting complexes have recently focused on the importance of van der Waals dispersion forces, whereas the role of exchange has received far less attention. Here, by exploiting the subtle binding between water and a boron and nitrogen doped benzene derivative (1,2-azaborine) we show how exact exchange can alter the binding conformation within a complex. Benchmark values have been calculated for three orientations of the water monomer on 1,2-azaborine from explicitly correlated quantum chemical methods, and we have also used diffusion quantum Monte Carlo. For a host of popular DFT exchange-correlation functionals we showmore » that the lack of exact exchange leads to the wrong lowest energy orientation of water on 1,2-azaborine. As such, we suggest that a high proportion of exact exchange and the associated improvement in the electronic structure could be needed for the accurate prediction of physisorption sites on doped surfaces and in complex organic molecules. Meanwhile to predict correct absolute interaction energies an accurate description of exchange needs to be augmented by dispersion inclusive functionals, and certain non-local van der Waals functionals (optB88- and optB86b-vdW) perform very well for absolute interaction energies. Through a comparison with water on benzene and borazine (B₃N₃H₆) we show that these results could have implications for the interaction of water with doped graphene surfaces, and suggest a possible way of tuning the interaction energy.« less

  16. A Comparison of Creep-Rupture Tested Cast Alloys HR282, IN740 and 263 for Possible Application in Advanced Ultrasupercritical Steam Turbine and Boiler

    SciTech Connect (OSTI)

    Jablonski, P D; Evens, N; Yamamoto, Y; Maziasz, P

    2011-02-27

    Cast forms of traditionally wrought Ni-base precipitation-strengthened superalloys are being considered for service in the ultra-supercritical conditions (760°C, 35MPa) of next-generation steam boilers and turbines. After casting and homogenization, these alloys were given heat-treatments typical for each in the wrought condition to develop the gamma-prime phase. Specimens machined from castings were creep-rupture tested in air at 800°C. In their wrought forms, alloy 282 is expected to precipitate M23C6 within grain boundaries, alloy 740 is expected to precipitate several grain boundary phases including M23C6, G Phase, and η phase, and alloy 263 has M23C6 and MC within its grain boundaries. This presentation will correlate the observed creep-life of these cast alloys with the microstructures developed during creep-rupture tests, with an emphasis on the phase identification and chemistry of precipitated grain boundary phases. The suitability of these cast forms of traditionally wrought alloys for turbine and boiler components will also be discussed.

  17. Development of a Cummins Westport SI-EGR Natural Gas Engine at 0.2 g/bhp-hr NOx: February 2, 2005 - July 31, 2006

    SciTech Connect (OSTI)

    Kamel, M.

    2006-10-01

    Discusses development and demonstration of advanced vehicle technologies for controlling exhaust emissions in a medium-duty natural gas engine to meet 2010 federal standards.

  18. Statement by Energy Secretary Samuel W. Bodman on House Passage of H.R. 6- Creating Long-Term Energy Alternatives for The Nation Act

    Broader source: Energy.gov [DOE]

    "I'm pleased that the new Congress is joining us in taking our nation's energy security seriously.  And I look forward to working with the Congress as it works on this and other energy legislation...

  19. Boron nitride composites

    DOE Patents [OSTI]

    Kuntz, Joshua D.; Ellsworth, German F.; Swenson, Fritz J.; Allen, Patrick G.

    2016-02-16

    According to one embodiment, a composite product includes hexagonal boron nitride (hBN), and a plurality of cubic boron nitride (cBN) particles, wherein the plurality of cBN particles are dispersed in a matrix of the hBN. According to another embodiment, a composite product includes a plurality of cBN particles, and one or more borate-containing binders.

  20. Category:Economic Community of West African States | Open Energy...

    Open Energy Info (EERE)

    15 pages are in this category, out of 15 total. B Benin Burkina Faso C Cape Verde G Gambia Ghana G cont. Guinea Guinea-Bissau I Ivory Coast L Liberia M Mali N Niger Nigeria...

  1. 11B

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

    B Thermal Neutron Capture Evaluated Data Measurements 1967RA24: 10B(n, γ), E = thermal; measured Eγ; deduced Q. 1969WE07: 10B(n, γ), E = thermal; measured Eγ, Doppler shift attenuation. 11B levels deduced T1/2. 1970MEZS: 10B(n, γ), E = thermal; measured σ. 1986KO19: 10B(n, γ), E = thermal; measured Eγ, Iγ; deduced σ. 11B deduced neutron binding energy, transition energies. 2001AC04: 10B(n, γ), E = thermal; measured Eγ, Iγ; deduced k0 factors. 2002RE13: 10B(n, γ), E = thermal;

  2. Anisotropic Hexagonal Boron Nitride Nanomaterials - Synthesis and Applications

    SciTech Connect (OSTI)

    Han,W.Q.

    2008-08-01

    Boron nitride (BN) is a synthetic binary compound located between III and V group elements in the Periodic Table. However, its properties, in terms of polymorphism and mechanical characteristics, are rather close to those of carbon compared with other III-V compounds, such as gallium nitride. BN crystallizes into a layered or a tetrahedrally linked structure, like those of graphite and diamond, respectively, depending on the conditions of its preparation, especially the pressure applied. Such correspondence between BN and carbon readily can be understood from their isoelectronic structures [1, 2]. On the other hand, in contrast to graphite, layered BN is transparent and is an insulator. This material has attracted great interest because, similar to carbon, it exists in various polymorphic forms exhibiting very different properties; however, these forms do not correspond strictly to those of carbon. Crystallographically, BN is classified into four polymorphic forms: Hexagonal BN (h-BN) (Figure 1(b)); rhombohedral BN (r-BN); cubic BN (c-BN); and wurtzite BN (w-BN). BN does not occur in nature. In 1842, Balmain [3] obtained BN as a reaction product between molten boric oxide and potassium cyanide under atmospheric pressure. Thereafter, many methods for its synthesis were reported. h-BN and r-BN are formed under ambient pressure. c-BN is synthesized from h-BN under high pressure at high temperature while w-BN is prepared from h-BN under high pressure at room temperature [1]. Each BN layer consists of stacks of hexagonal plate-like units of boron and nitrogen atoms linked by SP{sup 2} hybridized orbits and held together mainly by Van der Waals force (Fig 1(b)). The hexagonal polymorph has two-layered repeating units: AA'AA'... that differ from those in graphite: ABAB... (Figure 1(a)). Within the layers of h-BN there is coincidence between the same phases of the hexagons, although the boron atoms and nitrogen atoms are alternatively located along the c-axis. The

  3. H.R. 2372: A Bill to the Surface Mining Control and Reclamation Amendments Act of 1995. Introduced in the House of Representatives, One Hundred Fourth Congress, First session

    SciTech Connect (OSTI)

    1995-12-31

    This report discusses a bill to amend the Surface Mining Control and Reclamation Act of 1977 to minimize duplication in regulatory programs and to give States exclusive responsibility under approved States program for permitting and enforcement of the provisions of that Act with respect to surface coal mining and reclamation operations, and for other purposes.

  4. H.R. 1511: A Bill to provide for the termination of nuclear weapons activities, and for other purposes. Introduced in the House of Representatives, One Hundred Fourth Congress, First session

    SciTech Connect (OSTI)

    1995-12-31

    This legislation proposes no funding from fiscal 1996 on for Department of Energy (DOE) falling under the heading `weapons activities` in the `Atomic Energy Defense Activities` in title III of the Energy and Water Development Appropriations Act, 1995, except for orderly termination activities. It proposes cold standby level funding for the Nevada Test Site. It proposes no funding for the advanced neutron source program of the DOE, except for termination. It proposes no funding for the Tokamak Physics Experiment program of the DOE, except for termination. It proposes no funding for the Gas Turbine-Modular Helium Reactor program of the DOE, except for termination. It proposes no funding for fossil and nuclear energy research and development for fiscal years after 1997.

  5. Contents A

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

    106 May 2005 BN team recovers sources in Hawaii 1 Secretary of Energy Advisory Board reviews complex 1 Deputy Secretary of Energy visits Nevada 1 RSL supports Costa Rican aerial surveys 2 Tucson hosts waste management community 2 BN Occupational Medicine receives accreditation 3 Aviation Operations holds safety stand-down 3 New contract purchase agreements are just in time 3 BN Distinguished Visiting Professor completes first year 4 And the award goes to. . . 4 Kudos to BN 4 Six Sigma 5 Parking

  6. 12B

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

    Thermal Neutron Capture Evaluated Data Measurements 1989TAZR: 11B(n, γ), E = thermal; measured Eγ. 12B deduced absolute γ-yields. 2003MOZU: 11B(n, γ); compiled, analyzed capture σ, neutron binding energies. 2008FIZZ: 11B(n, γ), E = thermal; measured cross sections; deduced cross section balance. 2010LE02: 11B(n, γ); 2H(11B, p); E = 81 MeV; deduced reaction rates of astrophysical relevance, and abundances of 11B and 12B in r process. 2011SL01: 11B(n, γ), E = thermal; compiled, evaluated

  7. CRC handbook of agricultural energy potential of developing countries. Volume I

    SciTech Connect (OSTI)

    Duke, J.A.

    1986-01-01

    The contents of this book are: Introduction, Argentina, Bangladesh, Benin, Bolivia, Botswana, Bourkina (Upper Volta), Brazil, Burma, Burundi, Cameroon, Chad, Chile, Columbia, Costa Rica, Djibouti, Dominican Republic, Ecuador, El Salvador, Ethiopia, French Guiana, Gambia, Ghana, Guatemala, Guinea, Guyana, Haiti, Honduras, India, Indonesia, Jamaica, Appendix I. Conventional and Energetic Yields, Appendix II, Phytomass Files, and References.

  8. Total number of slots consumed in long_excl.q (exclusive nodes) will be

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

    Destination Destination: Total All Countries Afghanistan Albania Algeria Andora Angola Anguilla Antigua and Barbuda Argentina Armenia Aruba Australia Austria Azerbaijan Bangladesh Bahama Islands Bahrain Barbados Belarus Belgium Belize Benin Bolivia Bosnia and Herzegovina Brazil Brunei Bulgaria Burkina Faso Burma Bermuda Cambodia Cameroon Canada Cayman Islands Chad Chile China Cocos (Keeling) Islands Colombia Congo (Brazzaville) Congo (Kinshasa) Costa Rica Croatia Curacao Cyprus Czech

  9. Total All Countries Exports of Crude Oil and Petroleum Products by

    U.S. Energy Information Administration (EIA) Indexed Site

    Destination Destination: Total All Countries Afghanistan Albania Algeria Andora Angola Anguilla Antigua and Barbuda Argentina Armenia Aruba Australia Austria Azerbaijan Bangladesh Bahama Islands Bahrain Barbados Belarus Belgium Belize Benin Bolivia Bosnia and Herzegovina Brazil Brunei Bulgaria Burkina Faso Burma Bermuda Cambodia Cameroon Canada Cayman Islands Chad Chile China Cocos (Keeling) Islands Colombia Congo (Brazzaville) Congo (Kinshasa) Costa Rica Croatia Curacao Cyprus Czech

  10. Functionalization of cubic boron nitride films with rhodamine B and their fluorescent properties

    SciTech Connect (OSTI)

    Liu, W. M.; Zhang, H. Y.; Wang, P. F.; Ye, Q.; Yang, Y.; He, B.; Bello, I.; Lee, S. T.; Zhang, W. J.

    2011-08-08

    Fluorophore-functionalized cubic boron nitride (cBN) films grown by chemical vapor deposition were achieved by immobilizing rhodamine B isothiocyanate onto their surfaces. To perform the immobilization, the cBN substrates were modified with amino groups by photochemical reaction between hydrogen-terminated cBN surfaces and allylamine. The surface analysis of hydrogen-terminated cBN films surfaces and after functionalization with x-ray photoelectron spectroscopy verified that rhodamine B was indeed attached to the cBN surfaces with covalent bonding. The rhodamine B-functionalized cBN surfaces showed significant variation in fluorescent spectra and confocal imaging upon the treatment in acidic or basic solutions.

  11. One-Dimensional Nanostructures for Neutron Detection

    SciTech Connect (OSTI)

    Zhu, Yong; Eapen, Jacob; Hawari, Ayman

    2015-05-04

    This report consists of four parts in addition to a publication/presentation list. Part I is on electronic structure simulations on boron nitride (BN) and BCxN nanotubes using density function theory (DFT), Part II is on fabrication and characterization of nanowire sensors, Part III is on irradiation response of BN nanotubes using molecular dynamics (MD) simulations, and Part IV is on the in-situ transmission electron microscopy (TEM) study of irradiation response of BN nanotubes.

  12. Abstract:

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

    will discuss recent experiments on the structural, chemical, and electronic properties of graphene and hBN, including high resolution electron microscopy where real-time dynamics...

  13. United States Department of Energy and the Republic of Kazakhstan...

    National Nuclear Security Administration (NNSA)

    Department of Energy and the Republic of Kazakhstan Ministry of Energy Mark the Completion of the Packaging of the BN-350 Fast Breeder Reactor Spent Fuel | National Nuclear ...

  14. World Renewable Energy Network WREN | Open Energy Information

    Open Energy Info (EERE)

    Renewable Energy Network WREN Jump to: navigation, search Name: World Renewable Energy Network (WREN) Place: Brighton, United Kingdom Zip: BN2 1YH Sector: Renewable Energy Product:...

  15. Next-Generation LED Package Architectures Enabled by Thermally...

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

    This project will develop next-generation LED package architectures enabled by thermally conductive composite encapsulant materials utilizing boron nitride (BN). Nanoscale boron ...

  16. Cevix | Open Energy Information

    Open Energy Info (EERE)

    Name: Cevix Place: Brazil Sector: Renewable Energy Product: Company created by Brazilian pension fund Funcef and developer Desenvix to invest BRL 1bn in renewable energy....

  17. Volume 3 - Front Matter and TOC

    Office of Environmental Management (EM)

    ... nuclear power reactors), irradiation in fast reactors, immobilization with HLW, downblending ... The sodium-cooled BN-800 reactor could be operable in 2014, though a host of technical ...

  18. Consolidation of cubic and hexagonal boron nitride composites

    SciTech Connect (OSTI)

    Du Frane, W. L.; Cervantes, O.; Ellsworth, G. F.; Kuntz, J. D.

    2015-12-08

    When we Consolidate cubic boron nitride (cBN) it typically requires either a matrix of metal bearing materials that are undesirable for certain applications, or very high pressures within the cBN phase stability field that are prohibitive to manufacturing size and cost. We present new methodology for consolidating high stiffness cBN composites within a hexagonal boron nitride (hBN) matrix (15–25 vol%) with the aid of a binder phase (0–6 vol%) at moderate pressures (0.5–1.0 GPa) and temperatures (900–1300 °C). The composites are demonstrated to be highly tailorable with a range of compositions and resulting physical/mechanical properties. Ultrasonic measurements indicate that in some cases these composites have elastic mechanical properties that exceed those of the highest strength steel alloys. Moreover, two methods were identified to prevent phase transformation of the metastable cBN phase into hBN during consolidation: 1. removal of hydrocarbons, and 2. increased cBN particle size. Lithium tetraborate worked better as a binder than boron oxide, aiding consolidation without enhancing cBN to hBN phase transformation kinetics. These powder mixtures consolidated within error of their full theoretical mass densities at 1 GPa, and had only slightly lower densities at 0.5 GPa. This shows potential for consolidation of these composites into larger parts, in a variety of shapes, at even lower pressures using more conventional manufacturing methods, such as hot-pressing.

  19. Application Of Airborne Thermal Infrared Imagery To Geothermal...

    Open Energy Info (EERE)

    Infrared Imagery To Geothermal Exploration Abstract Burlington Northern (BN) conducted TIR surveys using a fixed wing aircraft over 17 different geothermal prospects in...

  20. Untitled Document

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

    person Li Liu, TAMU) is dedicated to investigate atomic and electronic structure of gold nano clusters supported by graphene moir's and corrugated h-BN nanomeshes along with...

  1. Park and Power | Open Energy Information

    Open Energy Info (EERE)

    Park and Power Place: East Sussex, England, United Kingdom Zip: BN1 1YR Product: Park and Power solution delivers a safe and sustainable infrastructure to ensure electrical...

  2. Preparation of superhydrophobic nanodiamond and cubic boron nitride films

    SciTech Connect (OSTI)

    Zhou, Y. B.; Liu, W. M.; Wang, P. F.; Yang, Y.; Ye, Q.; He, B.; Pan, X. J.; Zhang, W. J.; Bello, I.; Lee, S. T.; Zou, Y. S.

    2010-09-27

    Superhydrophobic surfaces were achieved on the hardest and the second hardest materials, diamond and cubic boron nitride (cBN) films. Various surface nanostructures of nanocrystalline diamond (ND) and cBN films were constructed by carrying out bias-assisted reactive ion etching in hydrogen/argon plasmas; and it is shown that surface nanostructuring may enhance dramatically the hydrophobicity of ND and cBN films. Together with surface fluorination, superhydrophobic ND and cBN surfaces with a contact angle greater than 150 deg. and a sliding angle smaller than 10 deg. were demonstrated. The origin of hydrophobicity enhancement is discussed based on the Cassie model.

  3. RADIOLOGICAL DATA FOR ALARA PLANNING PURPOSES Rev. 1 Contact

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

    RADIOLOGICAL DATA FOR ALARA PLANNING PURPOSES Rev. 1 Contact 1 ft 3 ft 10 ft 25 ft 50 ft 125 ft 100 mR/hr line 5 mR/hr line (R/hr) (R/hr) (R/hr) (R/hr) (R/hr) (R/hr) (R/hr) (feet) (feet) Outside of Cask (max) *Unshielded Liner (max) Top of *Unshielded Liner after the cask lid is removed *Unshielded Liner Inside of Cask/Lid Outside of Cask Lifting rig or any other support equipment Does the cask have fixed contamination that may "leach out" during transport (Yes/No)? If yes, please list

  4. CVD growth of graphene under exfoliated hexagonal boron nitride for vertical hybrid structures

    SciTech Connect (OSTI)

    Wang, Min; Jang, Sung Kyu; Song, Young Jae; Lee, Sungjoo

    2015-01-15

    Graphical abstract: We have demonstrated a novel yet simple method for fabricating graphene-based vertical hybrid structures by performing the CVD growth of graphene at an h-BN/Cu interface. Our systematic Raman measurements combined with plasma etching process indicate that a graphene film is grown under exfoliated h-BN rather than on its top surface, and that an h-BN/graphene vertical hybrid structure has been fabricated. Electrical transport measurements of this h-BN/graphene, transferred on SiO2, show the carrier mobility up to approximately 2250 cm{sup 2} V{sup ?1} s{sup ?1}. The developed method would enable the exploration of the possibility of novel hybrid structure integration with two-dimensional material systems. - Abstract: We have demonstrated a novel yet simple method for fabricating graphene-based vertical hybrid structures by performing the CVD growth of graphene at an h-BN/Cu interface. Our systematic Raman measurements combined with plasma etching process indicate that a graphene film is grown under exfoliated h-BN rather than on its top surface, and that an h-BN/graphene vertical hybrid structure has been fabricated. Electrical transport measurements of this h-BN/graphene, transferred on SiO{sub 2}, show the carrier mobility up to approximately 2250 cm{sup 2} V{sup ?1} s{sup ?1}. The developed method would enable the exploration of the possibility of novel hybrid structure integration with two-dimensional material systems.

  5. Interlayer coupling enhancement in graphene/hexagonal boron nitride heterostructures by intercalated defects or vacancies

    SciTech Connect (OSTI)

    Park, Sohee [Department of Materials Science and Engineering, Seoul National University, Seoul 151-747 (Korea, Republic of)] [Department of Materials Science and Engineering, Seoul National University, Seoul 151-747 (Korea, Republic of); Park, Changwon [Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)] [Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States); Kim, Gunn, E-mail: gunnkim@sejong.ac.kr [Department of Physics and Graphene Research Institute, Sejong University, Seoul 143-747 (Korea, Republic of)] [Department of Physics and Graphene Research Institute, Sejong University, Seoul 143-747 (Korea, Republic of)

    2014-04-07

    Hexagonal boron nitride (hBN), a remarkable material with a two-dimensional atomic crystal structure, has the potential to fabricate heterostructures with unusual properties. We perform first-principles calculations to determine whether intercalated metal atoms and vacancies can mediate interfacial coupling and influence the structural and electronic properties of the graphene/hBN heterostructure. Metal impurity atoms (Li, K, Cr, Mn, Co, and Cu), acting as extrinsic defects between the graphene and hBN sheets, produce n-doped graphene. We also consider intrinsic vacancy defects and find that a boron monovacancy in hBN acts as a magnetic dopant for graphene, whereas a nitrogen monovacancy in hBN serves as a nonmagnetic dopant for graphene. In contrast, the smallest triangular vacancy defects in hBN are unlikely to result in significant changes in the electronic transport of graphene. Our findings reveal that a hBN layer with some vacancies or metal impurities enhances the interlayer coupling in the graphene/hBN heterostructure with respect to charge doping and electron scattering.

  6. H.R.3688: A bill to amend the Internal Revenue Code of 1986 to provide a tax credit for marginal oil and natural gas well production, introduced in the House of Representatives, One Hundred Fifth Congress, Second Session, April 1, 1998

    SciTech Connect (OSTI)

    1998-12-31

    This bill proposes a new section to be added to the Internal Revenue Code of 1986. The credit proposed is $3 per barrel of qualified crude oil production and 50 cents per 1,000 cubic feet of qualified natural gas production. In this case qualified production means domestic crude oil or natural gas which is produced from a marginal well. Marginal production is defined within the Internal Revenue Code Section 613A(c)(6).

  7. H.R. 944: A Bill to provide rules regarding the payment by certain political subdivisions in the State of Montana of charges imposed by the United States with respect to a hydroelectric project located in Granite and Deer Lodge Counties, Montana. Introduced in the House of Representatives, One Hundred Fourth Congress, First session

    SciTech Connect (OSTI)

    1995-12-31

    This legislation grants a 5 year waiver on the payment of fees for the use of lands for the operating and maintaining of a hydroelectric development licensed by the Federal Energy Regulatory Commission, to any political subdivision of the state of Montana which takes the license, for FERC project 1473. Following the 5 year period the licensee would be required to pay the lesser of $20,000 or the annual charge for the use of the land imposed by any department or agency of the Federal Government.

  8. H.R. 599: A Bill to provide for the reconstitution of outstanding repayment obligations of the Administrator of the Bonneville Power Administration for the appropriated capital investments in the Federal Columbia River Power System. Introduced in the House of Representatives, One Hundred Fourth Congress, First session

    SciTech Connect (OSTI)

    1995-12-31

    This bill proposes to give the administrator of the Bonneville Power Administration the rights to refinance certain capital investments in the Federal Columbia River Power System. The act spells out how to distinguish old and new capital investments, how new principal amounts for old investments are calculated, interest rates and repayment dates. It also deals with interest rates for new capital investments during and after construction, appropriations for the Colville Reservation Grand Coulee Dam Settlement Act, and suggested contract provisions regarding future contracts.

  9. H.R. 817: A Bill to authorize the Secretary of Energy to lease lands within the naval oil shale reserves to private entities for the development and production of oil and natural gas. Introduced in the House of Representatives, One Hundred Fourth Congress, First session

    SciTech Connect (OSTI)

    NONE

    1995-12-31

    This bill would give the Secretary of Energy authority to lease lands within the Naval oil shale reserves to private entities for the purpose of surveying for and developing oil and gas resources from the land (other than oil shale). It also allows the Bureau of Land Management to be used as a leasing agent, establishes rules on royalties, and the sharing of royalties with the state, and covers the transfer of existing equipment.

  10. Spintronics with graphene-hexagonal boron nitride van der Waals heterostructures

    SciTech Connect (OSTI)

    Kamalakar, M. Venkata Dankert, André; Bergsten, Johan; Ive, Tommy; Dash, Saroj P.

    2014-11-24

    Hexagonal boron nitride (h-BN) is a large bandgap insulating isomorph of graphene, ideal for atomically thin tunnel barrier applications. In this letter, we demonstrate large area chemical vapor deposited (CVD) h-BN as a promising spin tunnel barrier in graphene spin transport devices. In such structures, the ferromagnetic tunnel contacts with h-BN barrier are found to show robust tunneling characteristics over a large scale with resistances in the favorable range for efficient spin injection into graphene. The non-local spin transport and precession experiments reveal spin lifetime ≈500 ps and spin diffusion length ≈1.6 μm in graphene with tunnel spin polarization ≈11% at 100 K. The electrical and spin transport measurements at different injection bias current and gate voltages confirm tunnel spin injection through h-BN barrier. These results open up possibilities for implementation of large area CVD h-BN in spintronic technologies.

  11. A cohesive law for interfaces in graphene/hexagonal boron nitride heterostructure

    SciTech Connect (OSTI)

    Zhang, Chenxi; Lou, Jun; Song, Jizhou

    2014-04-14

    Graphene/hexagonal boron nitride (h-BN) heterostructure has showed great potential to improve the performance of graphene device. We have established the cohesive law for interfaces between graphene and monolayer or multi-layer h-BN based on the van der Waals force. The cohesive energy and cohesive strength are given in terms of area density of atoms on corresponding layers, number of layers, and parameters in the van der Waals force. It is found that the cohesive law in the graphene/multi-layer h-BN is dominated by the three h-BN layers which are closest to the graphene. The approximate solution is also obtained to simplify the expression of cohesive law. These results are very useful to study the deformation of graphene/h-BN heterostructure, which may have significant impacts on the performance and reliability of the graphene devices especially in the areas of emerging applications such as stretchable electronics.

  12. Submicron cubic boron nitride as hard as diamond

    SciTech Connect (OSTI)

    Liu, Guoduan; Kou, Zili E-mail: yanxz@hpstar.ac.cn; Lei, Li; Peng, Fang; Wang, Qiming; Wang, Kaixue; Wang, Pei; Li, Liang; Li, Yong; Wang, Yonghua; Yan, Xiaozhi E-mail: yanxz@hpstar.ac.cn; Li, Wentao; Bi, Yan; Leng, Yang; He, Duanwei

    2015-03-23

    Here, we report the sintering of aggregated submicron cubic boron nitride (sm-cBN) at a pressure of 8 GPa. The sintered cBN compacts exhibit hardness values comparable to that of single crystal diamond, fracture toughness about 5-fold that of cBN single crystal, in combination with a high oxidization temperature. Thus, another way has been demonstrated to improve the mechanical properties of cBN besides reducing the grain size to nano scale. In contrast to other ultrahard compacts with similar hardness, the sm-cBN aggregates are better placed for potential industrial application, as their relative low pressure manufacturing perhaps be easier and cheaper.

  13. Microstructural characterization of commercial hot-pressed boron nitride

    SciTech Connect (OSTI)

    Steele, J.H.; Engel, R. )

    1988-09-01

    Microstructural characterization of commercially hot-pressed boron nitride (BN) using SEM and mercury porosimetry are described. Commercial material consits of varying amounts of B{sub 2}O{sub 3} (2% to 9%) and fine porosity (2% to 7%) within a bonded three-dimensional network of BN particles. The platelike BN particle morphology, which forms an aggregate by bonding along particle edges, is displayed. A layered structure present within individual BN particles is shown to consist of fine porous layers (<30 nm in thickness), which separate BN regions (100 to 200 nm in thickness) in the plane of the platelets. Size and dispersion of the pores and the continuous B{sub 2}O{sub 3} phase are estimated with mercury porosimetry and with SEM after leaching and filling with a liquid bismuth-tin (Bi-Sn) alloy.

  14. The Nitrogen-Nitride Anode.

    SciTech Connect (OSTI)

    Delnick, Frank M.

    2014-10-01

    Nitrogen gas N 2 can be reduced to nitride N -3 in molten LiCl-KCl eutectic salt electrolyte. However, the direct oxidation of N -3 back to N 2 is kinetically slow and only occurs at high overvoltage. The overvoltage for N -3 oxidation can be eliminated by coordinating the N -3 with BN to form the dinitridoborate (BN 2 -3 ) anion which forms a 1-D conjugated linear inorganic polymer with -Li-N-B-N- repeating units. This polymer precipitates out of solution as Li 3 BN 2 which becomes a metallic conductor upon delithiation. Li 3 BN 2 is oxidized to Li + + N 2 + BN at about the N 2 /N -3 redox potential with very little overvoltage. In this report we evaluate the N 2 /N -3 redox couple as a battery anode for energy storage.

  15. Optimal combinations of broadly neutralizing antibodies for prevention and treatments of HIV-1 clade C infection

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

    Wagh, Kshitij; Bhattacharya, Tanmoy; Williamson, Carolyn; Robles, Alex; Bayne, Madeleine; Garrity, Jetta; Rist, Michael; Rademeyer, Cecilia; Yoon, Hyejin; Lapedes, Alan Scott; et al

    2016-03-30

    In this study, the identification of a new generation of potent broadly neutralizing HIV-1 antibodies (bnAbs) has generated substantial interest in their potential use for the prevention and/or treatment of HIV-1 infection. While combinations of bnAbs targeting distinct epitopes on the viral envelope (Env) will likely be required to overcome the extraordinary diversity of HIV-1, a key outstanding question is which bnAbs, and how many, will be needed to achieve optimal clinical benefit. We assessed the neutralizing activity of 15 bnAbs targeting four distinct epitopes of Env, including the CD4-binding site (CD4bs), the V1/V2-glycan region, the V3-glycan region, and themore » gp41 membrane proximal external region (MPER), against a panel of 200 acute/early clade C HIV-1 Env pseudoviruses. A mathematical model was developed that predicted neutralization by a subset of experimentally evaluated bnAb combinations with high accuracy. Using this model, we performed a comprehensive and systematic comparison of the predicted neutralizing activity of over 1,600 possible double, triple, and quadruple bnAb combinations. The most promising bnAb combinations were identified based not only on breadth and potency of neutralization, but also other relevant measures, such as the extent of complete neutralization and instantaneous inhibitory potential (IIP). By this set of criteria, triple and quadruple combinations of bnAbs were identified that were significantly more effective than the best double combinations, and further improved the probability of having multiple bnAbs simultaneously active against a given virus, a requirement that may be critical for countering escape in vivo. These results provide a rationale for advancing bnAb combinations with the best in vitro predictors of success into clinical trials for both the prevention and treatment of HIV-1 infection.« less

  16. Jefferson Lab Human Resources

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

    Human Resources Consultants Cassandra Andrews, HR Consultant, Employee Relations & Recruitment (757) 269-7068, candrews@jlab.org Kelly Allmon, HR Consultant, Recruitment & ...

  17. Total Crude Oil and Products Imports from All Countries

    U.S. Energy Information Administration (EIA) Indexed Site

    Country: All Countries Persian Gulf OPEC Algeria Angola Ecuador Indonesia Iraq Kuwait Libya Nigeria Qatar Saudi Arabia United Arab Emirates Venezuela Non OPEC Albania Argentina Aruba Australia Austria Azerbaijan Bahamas Bahrain Barbados Belarus Belgium Belize Benin Bolivia Bosnia and Herzegovina Brazil Brunei Bulgaria Burma Cameroon Canada Chad Chile China Colombia Congo (Brazzaville) Congo (Kinshasa) Cook Islands Costa Rica Croatia Curacao Cyprus Czech Republic Denmark Dominican Republic Egypt

  18. Total Crude Oil and Products Imports from All Countries

    U.S. Energy Information Administration (EIA) Indexed Site

    Country: All Countries Persian Gulf OPEC Algeria Angola Ecuador Indonesia Iraq Kuwait Libya Nigeria Qatar Saudi Arabia United Arab Emirates Venezuela Non OPEC Albania Argentina Aruba Australia Austria Azerbaijan Bahamas Bahrain Barbados Belarus Belgium Belize Benin Bolivia Bosnia and Herzegovina Brazil Brunei Bulgaria Burma Cameroon Canada Chad Chile China Colombia Congo (Brazzaville) Congo (Kinshasa) Cook Islands Costa Rica Croatia Curacao Cyprus Czech Republic Denmark Dominican Republic Egypt

  19. Total Net Imports of Crude Oil and Petroleum Products into the U.S.

    U.S. Energy Information Administration (EIA) Indexed Site

    Country: Total All Countries Persian Gulf OPEC Algeria Angola Ecuador Indonesia Iran Iraq Kuwait Libya Nigeria Qatar Saudi Arabia United Arab Emirates Venezuela Non OPEC Afghanistan Albania Andora Anguilla Antigua and Barbuda Argentina Armenia Aruba Australia Austria Azerbaijan Bahamas Bahrain Bangladesh Barbados Belarus Belgium Belize Benin Bermuda Bolivia Bosnia and Herzegovina Botswana Brazil Brunei Bulgaria Burkina Faso Burma Cambodia Cameroon Canada Cayman Islands Chad Chile China Cocos

  20. U.S. Imports from All Countries

    U.S. Energy Information Administration (EIA) Indexed Site

    Import Area: U.S. Period/Unit: Monthly-Thousand Barrels Monthly-Thousand Barrels per Day Annual-Thousand Barrels Annual-Thousand Barrels per Day Country: All Countries Persian Gulf OPEC Algeria Angola Ecuador Indonesia Iraq Kuwait Libya Nigeria Qatar Saudi Arabia United Arab Emirates Venezuela Non OPEC Albania Argentina Aruba Australia Austria Azerbaijan Bahamas Bahrain Barbados Belarus Belgium Belize Benin Bolivia Bosnia and Herzegovina Brazil Brunei Bulgaria Burma Cameroon Canada Chad Chile

  1. Consolidation of cubic and hexagonal boron nitride composites

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

    Du Frane, W. L.; Cervantes, O.; Ellsworth, G. F.; Kuntz, J. D.

    2015-12-08

    When we Consolidate cubic boron nitride (cBN) it typically requires either a matrix of metal bearing materials that are undesirable for certain applications, or very high pressures within the cBN phase stability field that are prohibitive to manufacturing size and cost. We present new methodology for consolidating high stiffness cBN composites within a hexagonal boron nitride (hBN) matrix (15–25 vol%) with the aid of a binder phase (0–6 vol%) at moderate pressures (0.5–1.0 GPa) and temperatures (900–1300 °C). The composites are demonstrated to be highly tailorable with a range of compositions and resulting physical/mechanical properties. Ultrasonic measurements indicate that inmore » some cases these composites have elastic mechanical properties that exceed those of the highest strength steel alloys. Moreover, two methods were identified to prevent phase transformation of the metastable cBN phase into hBN during consolidation: 1. removal of hydrocarbons, and 2. increased cBN particle size. Lithium tetraborate worked better as a binder than boron oxide, aiding consolidation without enhancing cBN to hBN phase transformation kinetics. These powder mixtures consolidated within error of their full theoretical mass densities at 1 GPa, and had only slightly lower densities at 0.5 GPa. This shows potential for consolidation of these composites into larger parts, in a variety of shapes, at even lower pressures using more conventional manufacturing methods, such as hot-pressing.« less

  2. Inter-layer potential for hexagonal boron nitride

    SciTech Connect (OSTI)

    Leven, Itai; Hod, Oded; Azuri, Ido; Kronik, Leeor

    2014-03-14

    A new interlayer force-field for layered hexagonal boron nitride (h-BN) based structures is presented. The force-field contains three terms representing the interlayer attraction due to dispersive interactions, repulsion due to anisotropic overlaps of electron clouds, and monopolar electrostatic interactions. With appropriate parameterization, the potential is able to simultaneously capture well the binding and lateral sliding energies of planar h-BN based dimer systems as well as the interlayer telescoping and rotation of double walled boron-nitride nanotubes of different crystallographic orientations. The new potential thus allows for the accurate and efficient modeling and simulation of large-scale h-BN based layered structures.

  3. Field emission characteristics from graphene on hexagonal boron nitride

    SciTech Connect (OSTI)

    Yamada, Takatoshi, E-mail: takatoshi-yamada@aist.go.jp [National Institute of Advanced Industrial Science and Technology, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565 (Japan); Masuzawa, Tomoaki; Ebisudani, Taishi; Okano, Ken [International Christian University, 3-10-2 Osawa, Mitaka, Tokyo 181-8585 (Japan); Taniguchi, Takashi [National Institute for Material Science (NIMS), 1-1-1 Namiki, Tsukuba 305-0044 (Japan)

    2014-06-02

    An attempt has been made to utilize uniquely high electron mobility of graphene on hexagonal boron nitride (h-BN) to electron emitter. The field emission property of graphene/h-BN/Si structure has shown enhanced threshold voltage and emission current, both of which are key to develop novel vacuum nanoelectronics devices. The field emission property was discussed along with the electronic structure of graphene investigated by Fowler-Nordheim plot and ultraviolet photoelectron spectroscopy. The result suggested that transferring graphene on h-BN modified its work function, which changed field emission mechanism. Our report opens up a possibility of graphene-based vacuum nanoelectronics devices with tuned work function.

  4. Quality of Work Life brochure | Argonne National Laboratory

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

    Quality of Work Life brochure PDF icon 2013_08_29 hr_worklifepolicies brochure

  5. SAVANNAH-RIVER-NUCLEAR-SOLUTION-IBARS-SRS-SITE-APPS-ACCREDIATION-BOUNDARY.pdf

    Energy Savers [EERE]

    SAP_on_HR2776_and_HR3221.pdf SAP_on_HR2776_and_HR3221.pdf (48.66 KB) More Documents & Publications Response to several FOIA requests - Renewable Energy. Roadmap for Bioenergy and Biobased Products in the United States Workplace Charging Challenge Summit 2014: Session 2, Track B

  6. Alertness, performance and off-duty sleep on 8-hour and 12-hour night shifts in a simulated continuous operations control room setting

    SciTech Connect (OSTI)

    Baker, T.L.

    1995-04-01

    A growing number of nuclear power plants in the United States have adopted routine 12-hr shift schedules. Because of the potential impact that extended work shifts could have on safe and efficient power plant operation, the U.S. Nuclear Regulatory Commission funded research on 8-hr and 12-hr shifts at the Human Alertness Research Center (HARC) in Boston, Massachusetts. This report describes the research undertaken: a study of simulated 8-hr and 12-hr work shifts that compares alertness, speed, and accuracy at responding to simulator alarms, and relative cognitive performance, self-rated mood and vigor, and sleep-wake patterns of 8-hr versus 12-hr shift workers.

  7. Contact-induced spin polarization of monolayer hexagonal boron nitride on Ni(111)

    SciTech Connect (OSTI)

    Ohtomo, Manabu; Entani, Shiro; Matsumoto, Yoshihiro; Naramoto, Hiroshi; Sakai, Seiji; Yamauchi, Yasushi; Kuzubov, Alex A.; Eliseeva, Natalya S.; Avramov, Pavel V.

    2014-02-03

    Hexagonal boron nitride (h-BN) is a promising barrier material for graphene spintronics. In this Letter, spin-polarized metastable de-excitation spectroscopy (SPMDS) is employed to study the spin-dependent electronic structure of monolayer h-BN/Ni(111). The extreme surface sensitivity of SPMDS enables us to elucidate a partial filling of the in-gap states of h-BN without any superposition of Ni 3d signals. The in-gap states are shown to have a considerable spin polarization parallel to the majority spin of Ni. The positive spin polarization is attributed to the π-d hybridization and the effective spin transfer to the nitrogen atoms at the h-BN/Ni(111) interface.

  8. Vacancies in fully hydrogenated boron nitride layer: implications for functional nanodevices

    SciTech Connect (OSTI)

    Zhou, Yungang; Wang, Zhiguo; Nie, JL; Yang, Ping; Sun, Xin; Khaleel, Mohammad A.; Zu, Xiaotao; Gao, Fei

    2012-03-01

    Using density functional theory, a series of calculations of structural and electronic properties of hydrogen vacancies in a fully hydrogenated boron nitride (fH-BN) layer were conducted. By dehydrogenating the fH-BN structure, B-terminated vacancies can be created which induce complete spin polarization around the Fermi level, irrespective of the vacancy size. On the contrary, the fH-BN structure with N-terminated vacancies can be a small-gap semiconductor, a typical spin gapless semiconductor, or a metal depending on the vacancy size. Utilizing such vacancy-induced band gap and magnetism changes, possible applications in spintronics are proposed, and a special fH-BN based quantum dot device is designed.

  9. Eurowind Developments Ltd | Open Energy Information

    Open Energy Info (EERE)

    Zip: BN9 0NA Sector: Wind energy Product: Small vertical axis wind turbines for the urban environment. Coordinates: 38.98653, -81.972794 Show Map Loading map......

  10. The different adsorption mechanism of methane molecule onto a boron nitride and a graphene flakes

    SciTech Connect (OSTI)

    Seyed-Talebi, Seyedeh Mozhgan; Neek-Amal, M.

    2014-10-21

    Graphene and single layer hexagonal boron-nitride are two newly discovered 2D materials with wonderful physical properties. Using density functional theory, we study the adsorption mechanism of a methane molecule over a hexagonal flake of single layer hexagonal boron-nitride (h-BN) and compare the results with those of graphene. We found that independent of the used functional in our ab-initio calculations, the adsorption energy in the h-BN flake is larger than that for graphene. Despite of the adsorption energy profile of methane over a graphene flake, we show that there is a long range behavior beyond minimum energy in the adsorption energy of methane over h-BN flake. This result reveals the higher sensitivity of h-BN sheet to the adsorption of a typical closed shell molecule with respect to graphene. The latter gives insight in the recent experiments of graphene over hexagonal boron nitride.

  11. A PUBLICATION FOR ALL MEMBERS OF THE NNSA/NSO FAMILY Contents

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

    ... resumption of non-critical High Enriched Uranium (HEU) facilities and upgrade of ... The following acronyms appear frequently in SiteLines: BN Bechtel Nevada ES&H Environment, ...

  12. BPA-2014-01773-FOIA Request

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

    as per the online FOIA Request Form: Name: Kirill Ryzhov Email: Ex Organization: Mott MacDonald Mailing Address: Victory House, Trafalgar Place, Brighton, UK, BN1 4EV Phone:...

  13. BPA-2014-01773-FOIA Response

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

    28, 2014 In reply refer to: FOIA BPA-2014-01773-F Mott MacDonald Attn: Kirill Ryzhov Victory House Trafalgar Place Brighton, UK BN1 4FY Dear Mr. Ryzhov: We have received your...

  14. ANDY: A general, fault-tolerant tool for database searching oncomputer...

    Office of Scientific and Technical Information (OSTI)

    Authors: Smith, Andrew ; Chandonia, John-Marc ; Brenner, Steven E. Publication Date: 2005-12-21 OSTI Identifier: 903042 Report Number(s): LBNL--59252 R&D Project: 864D2D; BnR: ...

  15. Renewable Agricultural Energy | Open Energy Information

    Open Energy Info (EERE)

    Sector: Renewable Energy Product: Renewable Agricultural Energy plans to bring five ethanol plants on line by the end of 2009 with a combined annual capacity of at least 1.89bn...

  16. Molecular Simulation of Protein Aggregation (Journal Article...

    Office of Scientific and Technical Information (OSTI)

    Report Number(s): LBNL--61957 R&D Project: 402201; BnR: KC0302040 DOE Contract Number: DE-AC02-05CH11231 Resource Type: Journal Article Resource Relation: Journal Name: ...

  17. The Histidine Operon is Ancient (Journal Article) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    LBNL--60279 Journal ID: ISSN 0022-2844; JMEVAU; R&D Project: VGTLAA; BnR: KP1102010; TRN: US200804%%862 DOE Contract Number: DE-AC02-05CH11231 Resource Type: Journal Article ...

  18. Making Ultrabright X-Rays (Journal Article) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    Report Number(s): LBNL--41299 Journal ID: ISSN 0036-8733; SCAMAC; R&D Project: 458113; BnR: KC0204016; TRN: US0600675 DOE Contract Number: DE-AC02-05CH11231 Resource Type: Journal ...

  19. 3

    National Nuclear Security Administration (NNSA)

    Laboratory, Special Operations and Research Division BAPC State of Nevada Bureau of Air Pollution Control BLM Bureau of Land Management BN Bechtel Nevada CAA Clean Air Act CaCO 3 ...

  20. Thickness determination of few-layer hexagonal boron nitride films by scanning electron microscopy and Auger electron spectroscopy

    SciTech Connect (OSTI)

    Sutter, P. Sutter, E.

    2014-09-01

    We assess scanning electron microscopy (SEM) and Auger electron spectroscopy (AES) for thickness measurements on few-layer hexagonal boron nitride (h-BN), the layered dielectric of choice for integration with graphene and other two-dimensional materials. Observations on h-BN islands with large, atomically flat terraces show that the secondary electron intensity in SEM reflects monolayer height changes in films up to least 10 atomic layers thickness. From a quantitative analysis of AES data, the energy-dependent electron escape depth in h-BN films is deduced. The results show that AES is suitable for absolute thickness measurements of few-layer h-BN of 1 to 6 layers.

  1. Brunei: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    Country Profile Name Brunei Population 415,717 GDP 17,092,000,000 Energy Consumption 0.19 Quadrillion Btu 2-letter ISO code BN 3-letter ISO code BRN Numeric ISO...

  2. Interactive protein manipulation (Conference) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    Authors: SNCrivelli@lbl.gov Publication Date: 2003-07-01 OSTI Identifier: 886595 Report Number(s): LBNL--52414 R&D Project: K11107; BnR: KJ0101030; TRN: US0603968 DOE Contract ...

  3. Self-contained Kondo effect in single molecules (Journal Article...

    Office of Scientific and Technical Information (OSTI)

    OSTI Identifier: 877620 Report Number(s): LBNL--57492 Journal ID: ISSN 0031-9007; PRLTAO; R&D Project: 403005; BnR: KC0302030; TRN: US0601624 DOE Contract Number: DE-AC02-05CH11231 ...

  4. Finite Difference Modeling of Wave Progpagation in Acoustic TiltedTI...

    Office of Scientific and Technical Information (OSTI)

    OSTI Identifier: 875744 Report Number(s): LBNL--57324 Journal ID: ISSN 0016-8025; GPPRAR; R&D Project: G30901; BnR: AC1005000; TRN: US200603%%219 DOE Contract Number: ...

  5. Summary of Rock-Property Measurements for Hong Kong TuffSamples...

    Office of Scientific and Technical Information (OSTI)

    Authors: Dobson, Patrick F. ; Nakagawa, Seiji Publication Date: 2005-09-21 OSTI Identifier: 885236 Report Number(s): LBNL--58878 R&D Project: 366256; BnR: YN0100000; TRN: ...

  6. Protein-folding via divide-and-conquer optimization (Conference...

    Office of Scientific and Technical Information (OSTI)

    Authors: Oliva, Ricardo ; Crivelli, Silvia ; Meza, Juan Publication Date: 2004-07-11 OSTI Identifier: 882903 Report Number(s): LBNL--55869 R&D Project: 365969; BnR: YN0100000 DOE ...

  7. Plasma ion sources and ion beam technology inmicrofabrications...

    Office of Scientific and Technical Information (OSTI)

    ... Authors: Ji, Lili Publication Date: 2007-09-01 OSTI Identifier: 924801 Report Number(s): LBNL--63810 R&D Project: Z20737; BnR: YN0100000; TRN: US0802938 DOE Contract Number: ...

  8. Structural analysis of flexible proteins in solution by SmallAngle...

    Office of Scientific and Technical Information (OSTI)

    OSTI Identifier: 923447 Report Number(s): LBNL--60219 Journal ID: ISSN 1047-8477; JSBIEM; R&D Project: 441H01; BnR: KP1101010; TRN: US200804%%1163 DOE Contract Number: ...

  9. Plasma and Ion Sources in Large Area Coatings: A Review (Journal...

    Office of Scientific and Technical Information (OSTI)

    OSTI Identifier: 881604 Report Number(s): LBNL--57127 Journal ID: ISSN 0257-8972; SCTEEJ; R&D Project: 474716; BnR: BT0304030; TRN: US0602941 DOE Contract Number: DE-AC02-05CH11231 ...

  10. Thermal Stability of LiPF6 Salt and Li-ion Battery Electrolytes...

    Office of Scientific and Technical Information (OSTI)

    OSTI Identifier: 898281 Report Number(s): LBNL--58758 Journal ID: ISSN 0378-7753; JPSODZ; R&D Project: 673502; BnR: VT0301030; TRN: US200703%%412 DOE Contract Number: ...

  11. Numerical simulation of single-phase and multiphase non-Darcy...

    Office of Scientific and Technical Information (OSTI)

    Publication Date: 2000-06-02 OSTI Identifier: 861175 Report Number(s): LBNL--45855 Journal ID: TPMEEI; R&D Project: G30301; BnR: EB4001000; TRN: US200601%%693 DOE Contract Number: ...

  12. AES Solar | Open Energy Information

    Open Energy Info (EERE)

    energy private equity company Riverstone Holdings have dedicated up to USD 1bn to a new joint venture to develop grid-connected PV installations from 5-50MW in size. References:...

  13. Property:Incentive/Auth8Link | Open Energy Information

    Open Energy Info (EERE)

    (New York) + http:assembly.state.ny.usleg?defaultfld&bnA09560&term2011&SummaryY&ActionsY&TextY + Q Qualifying RPS State Export Markets (Connecticut) + http:...

  14. Effects of boron-nitride substrates on Stone-Wales defect formation in graphene: An ab initio molecular dynamics study

    SciTech Connect (OSTI)

    Jin, K.; Xiao, H. Y. [Department of Materials Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996 (United States); Zhang, Y. [Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States); Department of Materials Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996 (United States); Weber, W. J., E-mail: wjweber@utk.edu [Department of Materials Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996 (United States); Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)

    2014-05-19

    Ab initio molecular dynamics simulations are performed to investigate the effects of a boron nitride (BN) substrate on Stone-Wales (SW) defect formation and recovery in graphene. It is found that SW defects can be created by an off-plane recoil atom that interacts with the BN substrate. A mechanism with complete bond breakage for formation of SW defects in suspended graphene is also revealed for recoils at large displacement angles. In addition, further irradiation can result in recovery of the SW defects through a bond rotation mechanism in both graphene and graphene/BN, and the substrate has little effect on the recovery process. This study indicates that the BN substrate enhances the irradiation resistance of graphene.

  15. Graphene on boron-nitride: Moiré pattern in the van der Waals energy

    SciTech Connect (OSTI)

    Neek-Amal, M. [Department of Physics, University of Antwerpen, Groenenborgerlaan 171, B-2020 Antwerpen (Belgium); Department of Physics, Shahid Rajaee University, Lavizan, Tehran 16788 (Iran, Islamic Republic of); Peeters, F. M. [Department of Physics, University of Antwerpen, Groenenborgerlaan 171, B-2020 Antwerpen (Belgium)

    2014-01-27

    The spatial dependence of the van der Waals (vdW) energy between graphene and hexagonal boron-nitride (h-BN) is investigated using atomistic simulations. The van der Waals energy between graphene and h-BN shows a hexagonal superlattice structure identical to the observed Moiré pattern in the local density of states, which depends on the lattice mismatch and misorientation angle between graphene and h-BN. Our results provide atomistic features of the weak van der Waals interaction between graphene and BN which are in agreement with experiment and provide an analytical expression for the size of the spatial variation of the weak van der Waals interaction. We also found that the A-B-lattice symmetry of graphene is broken along the armchair direction.

  16. 15B

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

    Data Measurements 1984DU15: 15B(-n); measured T12, zero-, two-neutron emission probability limits. 1986CU01, 1986HAYX, 1987MIZU: 15B(-); measured -decay T12. 1988MU08:...

  17. Conformal Deep Trench Coating with both Conducting and InsulatingMater...

    Office of Scientific and Technical Information (OSTI)

    Report Number(s): LBNL--60352 R&D Project: Z2ISD1; BnR: 400403809 DOE Contract Number: DE-AC02-05CH11231 Resource Type: Conference Resource Relation: Conference: 50th Conference on ...

  18. Thin film growth of boron nitride on {alpha}-Al{sub 2}O{sub 3} (0 0 1) substrates by reactive sputtering

    SciTech Connect (OSTI)

    Anzai, Atsushi; Nishiyama, Fumitaka; Yamanaka, Shoji; Inumaru, Kei

    2011-12-15

    Highlights: Black-Right-Pointing-Pointer A BN film grown on {alpha}-Al{sub 2}O{sub 3} (0 0 1) had a structure in which h-BN sheet stacking continued through almost the whole film thickness. Black-Right-Pointing-Pointer The structure was characterized by X-ray diffraction, ATR-IR, and XPS. Black-Right-Pointing-Pointer Tauc plots suggested the film had direct band gap and the optical band gap was close to that of bulk h-BN. -- Abstract: Boron nitride thin films were grown on {alpha}-Al{sub 2}O{sub 3} (0 0 1) substrates by reactive magnetron sputtering. Infrared attenuated total reflection (ATR) spectra of the films gave an intense signal associated with in-plane B-N stretching TO mode of short range ordered structure of BN hexagonal sheets. X-ray diffraction for the film prepared at a low working pressure (ca. 1 Multiplication-Sign 10{sup -3} Torr) gave a diffraction peak at slightly lower angle than that corresponding to crystal plane h-BN (0 0 2). It is notable that crystal thickness calculated from X-ray peak linewidth (45 nm) was close to film thickness (53 nm), revealing well developed sheet stacking along the direction perpendicular to the substrate surface. When the substrates of MgO (0 0 1) and Si (0 0 1) were used, the short-range ordered structure of h-BN sheet was formed but the films gave no X-ray diffraction. The film showed optical band gap of 5.9 eV, being close to that for bulk crystalline h-BN.

  19. Fabrication and characterization of hexagonal boron nitride powder by spray drying and calcining-nitriding technology

    SciTech Connect (OSTI)

    Shi Xiaoliang Wang Sheng; Yang Hua; Duan Xinglong; Dong Xuebin

    2008-09-15

    Hexagonal boron nitride (hBN) powder was fabricated prepared by the spray drying and calcining-nitriding technology. The effects of nitrided temperature on the phases, morphology and particle size distribution of hBN powder, were investigated. The synthesized powders were characterized by X-ray diffraction (XRD), field emission scanning electron microscope (FESEM), Fourier transformed infrared spectrum, ultraviolet-visible (UV-vis) spectrum and photoluminescence (PL) spectrum. UV-vis spectrum revealed that the product had one obvious band gap (4.7 eV) and PL spectrum showed that it had a visible emission at 457 nm ({lambda}{sub ex}=230 nm). FESEM image indicated that the particle size of the synthesized hBN was mainly in the range of 0.5-1.5 {mu}m in diameter, and 50-150 nm in thickness. The high-energy ball-milling process following 900 deg. C calcining process was very helpful to obtain fully crystallized hBN at lower temperature. - Graphical abstract: hBN powder was fabricated prepared by spray drying and calcining-nitriding technology. The results indicated that spray drying and calcining-nitriding technology assisted with high-energy ball-milling process following calcined process was a hopeful way to manufacture hBN powder with high crystallinity in industrial scale.

  20. Hexagonal boron nitride luminescence dependent on vacuum level and surrounding gases

    SciTech Connect (OSTI)

    Korsaks, V.

    2015-10-15

    Highlights: • 400 nm Luminescence of hBN powder is sensitive to surrounding vacuum or oxygen gas. • Decrease of hBN powder grain size improves its oxygen sensing properties. • hBN powder is proposed as prospective material for oxygen gas sensors. - Abstract: Gas sensing properties of hBN powder bulk and nanosize were studied. It was demonstrated that for hBN powders with grain sizes of 70 nm, 1 μm and 5 μm the native defect-induced luminescence observed at 400 nm under 265 nm light excitation and room temperature is sensitive to oxygen gas reducing luminescence intensity. The highest value of luminescence intensity is reached when sample is in vacuum. Results obtained allow conclusion that the hBN powder is prospective for sensing of oxygen gas. Some material properties such as dependence of luminescence intensity on vacuum level and pumping time, ratio of luminescence intensity when sample is in vacuum and gas, its dependence on material grain size were studied.

  1. Preparation and properties of hexagonal boron nitride fibers used as high temperature membrane filter

    SciTech Connect (OSTI)

    Hou, Xinmei Yu, Ziyou; Li, Yang; Chou, Kuo-Chih

    2014-01-01

    Graphical abstract: - Highlights: • h-BN fibers were successfully fabricated using H{sub 3}BO{sub 3} and C{sub 3}H{sub 6}N{sub 6} as raw materials. • The obtained BN fibers were polycrystalline and uniform in morphology. • It exhibited good oxidation resistance and low thermal expansion coefficient. - Abstract: Hexagonal boron nitride fibers were synthesized via polymeric precursor method using boric acid (H{sub 3}BO{sub 3}) and melamine (C{sub 3}H{sub 6}N{sub 6}) as raw materials. The precursor fibers were synthesized by water bath and BN fibers were prepared from the precursor at 1873 K for 3 h in flowing nitrogen atmosphere. The crystalline phase and microstructures of BN fibers were examined by X-ray diffraction, field emission scanning electron microscopy, transmission electron microscopy and high resolution electron microscopy. The results showed that h-BN fibers with uniform morphology were successfully fabricated. The well-synthesized BN fibers were polycrystalline with 0.4–1.5 μm in diameter and 200–500 μm in length. The as-prepared samples exhibited good oxidation resistance and low thermal expansion coefficient at high temperature.

  2. Hanford Advisory Board Draft Advice

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

    Proposed Plan for Remediation of the 100-DR-1, 100-DR-2, 100-HR-1, 100-HR-2, and 100-HR-3 Operable Units Authors: Dale Engstrom Originating Committee: River & Plateau Version #1: Color: __pink__yellow_X_green__buff__purple__blue__ Background A Proposed Plan for Remediation of the 100-DR-1, 100-DR-2, 100-HR-1, 100-HR-2, and 100- HR-3 Operable Units (DOE/RL-2011-111, Rev 0) has been completed, including the preferred alternative proposed for remediation. The Hanford Advisory Board (Board) has

  3. Engstrom, Mattson, Pollet, Vanni, Suyama, Cimon, Serres

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

    100-D/H, Draft A, v.5 (4/8/14) Page 1 of 2 Engstrom, Mattson, Pollet, Vanni, Suyama, Cimon, Serres Draft Advice: Proposed Plan for Remediation of the 100-DR-1, 100-DR-2, 100-HR-1, 100-HR-2, and 100-HR-3 Operable Units (Draft A) Background A Remedial Investigation/Feasibility Study has been completed for the 100-DR-1, 100-DR-2, 100-HR-1, 100-HR-2, and 100-HR-3 Operable Units (DOE/RL-2010-95; 100-D/H RI/FS) and a Proposed Plan was prepared which highlights key information about the cleanup

  4. Microsoft Word - 2016_0107_RAP_100-DH-PP_advice_DRAFTv5.doc

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

    RAP Committee: Draft Advice: 100-D/H, Draft A, v.5 (1/7/16) Page 1 of 2 Engstrom, Mattson, Pollet, Vanni, Suyama, Cimon, Serres Draft Advice: Proposed Plan for Remediation of the 100-DR-1, 100-DR-2, 100-HR-1, 100-HR-2, and 100-HR-3 Operable Units (Draft A) Background A Remedial Investigation/Feasibility Study (Draft A) has been completed for the 100-DR-1, 100-DR-2, 100-HR-1, 100-HR-2, and 100-HR-3 Operable Units (DOE/RL-2010-95; 100-D/H RI/FS) and a Proposed Plan was prepared with the preferred

  5. Turmoil doesn`t dampen enthusiasm

    SciTech Connect (OSTI)

    1997-08-01

    The paper discusses the outlook for the African gas and oil industries. Though Africa remains politically and economically volatile, its vast energy potential is becoming increasingly attractive to foreign oil and gas companies. Separate evaluations are given for Algeria, Egypt, Nigeria, Angola, Libya, Congo, Gabon, Tunisia, Cameroon, Cote D`Ivoire, and briefly for South Africa, Sudan, Equatorial Guinea, Ghana, Zaire, Benin, Mozambique, Chad, Namibia, Tanzania, Eritrea, Guinea-Bissau, Senegal, Morocco, Sao Tome and Principe, Ethiopia, Niger, Madagascar, Rwanda, Mauritania, Seychelles, Uganda, and Liberia.

  6. Fact #779: May 13, 2013 EPA's Top Ten Rated Vehicles List for...

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

    The Tesla Model S is a large sedan and comes with two battery pack options (60 kW-hr and ... Combined 105 City 110Highway 99 8. 2013 Tesla Model S (60 kW-hr battery pack) Electric ...

  7. FLASH2011-6-OPAM | Department of Energy

    Energy Savers [EERE]

    THE SMALL BUSINESS JOBS ACT OF 2010 H.R. 5297 2011-6 Attachment 1 Summary of Public Law 111-240 The Small Business Jobs Act of 2010 2011-6 Attachment 2 H.R. 5297...

  8. Property:DayQuantity | Open Energy Information

    Open Energy Info (EERE)

    are not known. Acceptable units (and their conversions) are: 1 day,Day,days,Days,DAY,DAYS,d,D 24 hour,hours,Hour,Hours,hr,hrs,HOUR,HOURS,HR,HRS 1440 minute,minutes,Minute,Minutes,m...

  9. FY 2004 | U.S. DOE Office of Science (SC)

    Office of Science (SC) Website

    FY 2004 Energy and Water Development Appropriations House Senate Conference Enacted Bill H.R. 2754 S. 1424 H.R. 2754 P.L. 108-137 .pdf file (224KB) Report H. 108-212 .pdf file ...

  10. FY 2000 | U.S. DOE Office of Science (SC)

    Office of Science (SC) Website

    .pdf file (122KB) Science Program Direction .pdf file (70KB) FY 2000 Energy and Water Development Appropriations House Senate Conference Enacted Bill H.R. 2605 S. 1186 H.R. ...