National Library of Energy BETA

Sample records for brit ish ther


    Office of Environmental Management (EM)

    IIT-Industry Collaboration - Synchrophasor Engineering Research and Training Applicant: Illinois Institute of Technology (IIT) Principal Investigator: Alexander J. Flueck,, 312-567-3625 Project Description Illinois Institute of Technology (IIT) has installed 12 Phasor Measurement Units (PMUs) on its main campus, home to the DOE-funded Perfect Power Microgrid. With the assistance of IIT Facilities, the PMU project has been gathering synchrophasor data from the 4 kV campus

  2. Temperature dependence of the photo-induced inverse spin Hall effect in Au/InP hybrid structures

    SciTech Connect (OSTI)

    Khamari, Shailesh K. Porwal, S.; Dixit, V. K.; Sharma, T. K.


    Photo-induced Inverse Spin Hall Effect (ISHE) measurements on Au/InP hybrid structures are performed over a temperature range of 45 to 300?K. Dependence of the spin current density on the degree of circular polarization and also on the angle of incidence of laser beam confirms the ISHE origin of measured signal. The magnitude of ISHE increases with sample cooling. A numerical model based on the spin relaxation of non-equilibrium spin-polarized electrons is proposed for predicting the temperature dependence of ISHE. Our results indicate that the proposed device can be used as a spin photodetector over a wide temperature range.

  3. Swatch Group | Open Energy Information

    Open Energy Info (EERE)

    Swatch Group Jump to: navigation, search Name: Swatch Group Place: Switzerland Product: String representation "The Swatch Grou ... ther industries" is too long. References: Swatch...

  4. GSA Office of Governmentwide Policy CIVILIAN AGENCY ACQUISITION...

    Office of Environmental Management (EM)


  5. Protermosolar | Open Energy Information

    Open Energy Info (EERE)

    Place: Sevilla, Spain Zip: 41092 Sector: Solar Product: Association of Solar Ther Electricity Generation (STEG) and equipment providers in Spain References:...

  6. Alliance to Save Energy | Open Energy Information

    Open Energy Info (EERE)

    Washington, DC Zip: 20036 Sector: Efficiency Product: String representation "Founded in 1977 ... ther countries." is too long. References: Alliance to Save Energy1 Information...

  7. GSA Office of Governmentwide Policy CIVILIAN AGENCY ACQUISITION...

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

    N AG THER THAN NASA FROM: -LAURAAULETTA CHAIR CIVILIAN AGENCY ACQUISITION COUNCIL (CAAC) ... This CAAC memorandum constitutes consultation with the Chair of the CAAC required by FAR ...

  8. Observation of the inverse spin Hall effect in ZnO thin films: An all-electrical approach to spin injection and detection

    SciTech Connect (OSTI)

    Prestgard, Megan C.; Tiwari, Ashutosh


    The inverse spin Hall effect (ISHE) is a newly discovered, quantum mechanical phenomenon where an applied spin current results in the generation of an electrical voltage in the transverse direction. It is anticipated that the ISHE can provide a more simple way of measuring spin currents in spintronic devices. The ISHE was first observed in noble metals that exhibit strong spin-orbit coupling. However, recently, the ISHE has been detected in conventional semiconductors (such as Si and Ge), which possess weak spin-orbit coupling. This suggests that large-spin orbit coupling is not a requirement for observing the ISHE. In this paper, we are reporting the observation of the ISHE in an alternative semiconductor material, zinc oxide (ZnO) using all-electrical means. In our study, we found that when a spin-polarized current is injected into the ZnO film from a NiFe ferromagnetic injector via an MgO tunnel barrier layer, a voltage transverse to both the direction of the current as well as its spin-polarization is generated in the ZnO layer. The polarity of this voltage signal was found to flip on reversing the direction of the injected current as well as on reversing the polarization of the current, consistent with the predictions of the ISHE process. Through careful analysis of the ISHE data, we determined a spin-Hall angle of approximately 1.651 × 10{sup −2} for ZnO, which is two orders of magnitude higher than that of silicon. Observation of a detectable room-temperature ISHE signal in ZnO via electrical injection and detection is a groundbreaking step that opens a path towards achieving transparent spin detectors for next-generation spintronic device technology.


    Office of Legacy Management (LM)

    EIECYNC PRODUCYS INC. .-- I j..%+g3& *.' .-.'- Atomic Energy Divisis, A.rA.od n 2i?ish BAYSIDE, NEW YORK September b, 1952 Xanagcr of Operations U. S. Atomic Energy Commission ...

  10. BPA-2014-01328-FOIA Response

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

    0 Alarm 181 Auto Accident 0 Client Comp. 0 Emergency 0 Fire 0 Open SafeFile 0 Prop. Damage 0 Safety Hazard 0 Susp Person(s) 0 Theft 0 Water Leak 00ther Explain: Vehicle...

  11. I

    Office of Legacy Management (LM)

    It is only after thorough research efforts of concentrati-on hav fi-.led that treatment of ... of thle hi -.. .:'"' e r': .:l..led r.ther ttan the ef' of .chod employed. ...

  12. Dependence of inverse-spin Hall effect and spin-rectified voltage on tantalum thickness in Ta/CoFeB bilayer structure

    SciTech Connect (OSTI)

    Kim, Sang-Il; Seo, Min-Su; Park, Seung-Young; Kim, Dong-Jun; Park, Byong-Guk


    Ta-layer thickness (t{sub Ta}) dependence of the measured DC voltage V from the inverse-spin Hall effect (ISHE) in Ta/CoFeB bilayer structure is experimentally investigated using the ferromagnetic resonance in the TE{sub 011} resonant cavity. The ISHE signals excluding the spin-rectified effect (SRE) were separated from the fitted curve of V against t{sub Ta}. For t{sub Ta} ≈ λ{sub Ta} (Ta-spin diffusion length = 2.7 nm), the deviation in ISHE voltage V{sub ISH} between the experimental and theoretical values is significantly increased because of the large SRE contribution, which also results in a large deviation in the spin Hall angle θ{sub SH} (from 10% to 40%). However, when t{sub Ta} ≫ λ{sub Ta}, the V{sub ISH} values are consistent with theoretical values because the SRE terms become negligible, which subsequently improves the accuracy of the obtained θ{sub SH} within 4% deviation. The results will provide an outline for an accurate estimation of the θ{sub SH} for materials with small λ value, which would be useful for utilizing the spin Hall effect in a 3-terminal spintronic devices in which magnetization can be controlled by in-plane current.

  13. The spin Hall angle and spin diffusion length of Pd measured by spin pumping and microwave photoresistance

    SciTech Connect (OSTI)

    Tao, X. D.; Feng, Z.; Miao, B. F.; Sun, L.; You, B.; Wu, D.; Du, J.; Zhang, W.; Ding, H. F., E-mail: [Department of Physics, National Laboratory of Solid State Microstructures, Nanjing University, 22 Hankou Road, Nanjing 210093 (China)


    We present the experimental study of the spin Hall angle (SHA) and spin diffusion length of Pd with the spin pumping and microwave photoresistance effects. The Py/Pd bilayer stripes are excited with an out-of-plane microwave magnetic field. The pure spin current is thus pumped and transforms into charge current via the inverse spin Hall effect (ISHE) in Pd layer, yielding an ISHE voltage. The ISHE voltage can be distinguished from the unwanted signal caused by the anisotropic magnetoresistance according to their different symmetries. Together with Pd thickness dependent measurements of in and out-of-plane precessing angles and effective spin mixing conductance, the SHA and spin-diffusion length of Pd are quantified as 0.0056??0.0007 and 7.3??0.7?nm, respectively.

  14. Method of freezing living cells and tissues with improved subsequent survival

    DOE Patents [OSTI]

    Senkan, Selim M.; Hirsch, Gerald P.


    This invention relates to an improved method for freezing red blood cells, ther living cells, or tissues with improved subsequent survival, wherein constant-volume freezing is utilized that results in significantly improved survival compared with constant-pressure freezing; optimization is attainable through the use of different vessel geometries, cooling baths and warming baths, and sample concentrations.

  15. Donald Frederick, LLNL

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

    o f t he n ext generaBon o f h igh---Z m aterials s imulaBons w hile a t t he s ame B me straighlorward f or o thers t o r eplicate a nd c ompare p erformance...

  16. The Los Alamos Postdoc Career Fair is an

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

    m aterials t echnology, s uper---compu>ng, a nd m any other fi elds. L ANL h as a l ong---standing t radi>on o f p artnering with u niversi>es, i ndustries, a nd o ther n...

  17. Generation of spin currents in the skyrmion phase of a helimagnetic insulator Cu{sub 2}OSeO{sub 3}

    SciTech Connect (OSTI)

    Hirobe, Daichi Shiomi, Yuki; Shimada, Yuhki; Ohe, Jun-ichiro; Saitoh, Eiji


    We report spin-current generation related to skyrmion dynamics resonantly excited by a microwave in a helimagnetic insulator Cu{sub 2}OSeO{sub 3}. A Pt layer was fabricated on Cu{sub 2}OSeO{sub 3} and voltage in the Pt layer was measured upon magnetic upon magnetic resonance of Cu{sub 2}OSeO{sub 3} to electrically detect injected spin currents via the inverse spin Hall effect (ISHE) in Pt. We found that ISHE-induced electromotive forces appear in the skyrmion phase of Cu{sub 2}OSeO{sub 3} as well as in the ferrimagnetic phase, which shows that magnetic skyrmions can contribute to the spin pumping effect.

  18. Determination of gene expression patterns using high-throughput RNA in situ hybridizaion to whole-mount Drosophila embryos

    SciTech Connect (OSTI)

    Weiszmann, R.; Hammonds, A.S.; Celniker, S.E.


    We describe a high-throughput protocol for RNA in situ hybridization (ISH) to Drosophila embryos in a 96-well format. cDNA or genomic DNA templates are amplified by PCR and then digoxigenin-labeled ribonucleotides are incorporated into antisense RNA probes by in vitro transcription. The quality of each probe is evaluated before ISH using a RNA probe quantification (dot blot) assay. RNA probes are hybridized to fixed, mixed-staged Drosophila embryos in 96-well plates. The resulting stained embryos can be examined and photographed immediately or stored at 4oC for later analysis. Starting with fixed, staged embryos, the protocol takes 6 d from probe template production through hybridization. Preparation of fixed embryos requires a minimum of 2 weeks to collect embryos representing all stages. The method has been used to determine the expression patterns of over 6,000 genes throughout embryogenesis.

  19. American Recovery & Reinvestment Act Newsletter - Issue 20

    Office of Environmental Management (EM)

    LOS ALAMOS, N.M. - The skyline of Los Alamos was changed forever when 24 old buildings and structures were demol- ished with American Recovery and Reinvestment Act funding. "Our most significant accomplishment of 2010 was the suc- cessful completion of the decontamination and demolition of 24 old buildings and structures at Technical Area 21," said Al Chaloupka, project director of building demolition at Technical Area (TA-21). "In addition to demolishing these old buildings, the

  20. American Recovery & Reinvestment Act Newsletter - Issue 22

    Office of Environmental Management (EM)

    Before American Recovery and Reinvestment Act workers set out to clean up contamination and demol- ish facilities that supported the Cold War and the Manhattan Project, Oak Ridge called on its budget analysts and financial personnel to ensure that the $755 million Recovery Act investment would be used effectively and expeditiously. The planners for Oak Ridge's Environmental Management (EM) program quickly compiled a list of shovel-ready projects that would accomplish key DOE missions and create

  1. Resonant cavity mode dependence of anomalous and inverse spin Hall effect

    SciTech Connect (OSTI)

    Kim, Sang-Il; Seo, Min-Su; Park, Seung-young


    The direct current electric voltage induced by the Inverse Spin Hall Effect (ISHE) and Anomalous Hall Effect (AHE) was investigated in the TE{sub 011} and TE{sub 102} cavities. The ISHE and AHE components were distinguishable through the fitting of the voltage spectrum. The unwanted AHE was minimized by placing the DUT (Device Under Test) at the center of both the TE{sub 011} and TE{sub 102} cavities. The voltage of ISHE in the TE{sub 011} cavity was larger than that in the TE{sub 102} cavity due to the higher quality factor of the former. Despite optimized centering, AHE voltage from TE{sub 011} cavity was also higher. The reason was attributed to the E-field distribution inside the cavity. In the case of the TE{sub 011} cavity, the DUT was easily exposed to the E-field in all directions. Therefore, the parasitic AHE voltage in the TE{sub 102} cavity was less sensitive than that in the TE{sub 011} cavity to decentering problem.

  2. Koniges_ICNSP2013e.pptx

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

    Material Plasma Modeling on HPC Platforms A. Koniges 1 , W. Lui 1 , Y. He 1 , D. Eder 2 , A. Fisher 2 , N. Masters 2 , and R. W. Anderson 2 1 Lawrence Berkeley National Laboratory 2 Lawrence Livermore National Laboratory 23 rd International Conference on Numerical Simulation of Plasmas Beijing, China September 16, 2013 What this talk is NOT about* *But s ee m e i f y ou w ish m ore i nforma2on * Advanced hybrid techniques to overlap communication and computation in GTS (Princeton Gyrokinetic

  3. Strongly enhanced spin current in topological insulator/ferromagnetic metal heterostructures by spin pumping

    SciTech Connect (OSTI)

    Wu, C. N.; Hung, H. Y.; Lin, H. Y.; Lin, P. H.; Kwo, J. E-mail:; Lin, Y. H.; Fanchiang, Y. T.; Hong, M. E-mail:; Lin, J. G.; Lee, S. F.


    Spin pumping effect in Bi{sub 2}Se{sub 3}/Fe{sub 3}Si and Fe/Bi{sub 2}Te{sub 3} heterostructures was studied. High quality films of Bi{sub 2}Se{sub 3}(001) on ferromagnetic Fe{sub 3}Si(111) layer and Fe(111) films on Bi{sub 2}Te{sub 3}(001) layer were grown epitaxially by molecular beam epitaxy. Using a microwave cavity source, large voltages due to the Inverse Spin Hall Effect (V{sub ISHE}) were detected in Bi{sub 2}Se{sub 3}(001)/Fe{sub 3}Si(111) bi-layer at room temperature. V{sub ISHE} of up to 63.4 ± 4.0 μV at 100 mW microwave power (P{sub MW}) was observed. In addition, Fe(111)/Bi{sub 2}Te{sub 3}(001) bi-layer also showed a large V{sub ISHE} of 3.0 ± 0.1 μV at P{sub MW} of 25 mW. V{sub ISHE} of both structures showed microwave linear power dependence in accordance with the theoretical model of spin pumping. The spin Hall angle was calculated to be 0.0053 ± 0.002 in Bi{sub 2}Se{sub 3} and was estimated to be 0.0068 ± 0.003 in Bi{sub 2}Te{sub 3}. The charge current density (J{sub c}) of Bi{sub 2}Se{sub 3}/Fe{sub 3}Si and Fe/Bi{sub 2}Te{sub 3} structures are comparable and are about 2–5 times higher than the Fe{sub 3}Si/normal metal and Fe{sub 3}Si/GaAs results. The significant enhancement of spin current in topological insulator/ferromagnetic metal (TI/FM) and FM/TI bilayers is attributed to strong spin-orbit coupling inherent of TIs and demonstrates the high potential of exploiting TI-based structures for spintronic applications.

  4. AwardWinnersByCategoryProject

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

    Category Project Name Team Member Group Change Agents Gold Award Nominated by Mary Neu Re-Sourcing! Pj Martinez DSESH-STO Dave Seagraves RP-SVS Laurie Tomlinson B-DO Star - Change Agents Award Nominated by Elizabeth Joseph Catalysts for Improved Chemical Management Monica Andersen BPS-DO James Corey Larkin OPS-SIO Cheryl Lucas OS-DO Dina Siegel OSH-ISH Jon Tapia PS-3 Environmental Management Systems Gold Award Nominated by Stephen Glick Leading LANL's Legacy Lead to LANSCE Fredric Bolton

  5. Ankit Bhagatwala! NERSC User Services Group! New User Training!

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

    Ankit Bhagatwala! NERSC User Services Group! ! New User Training! March 21, 2016 Computing Environment Node Types * Login nodes - Shared w ith o ther u sers - Code c ompila3on, j ob p repara3on a nd s ubmission * Compute n odes - Not s hared ( except s hared q ueue o n C ori) * Service nodes - File s ystem a ccess ( lustre), d ata m ovement ( HPSS), network c onnec3ons t o o utside w orld, e tc. - Not a ccessed d irectly --- 2 --- Login Node Configuration * Edison - Twelve n odes * 16 c ores, 2

  6. WEC-Sim-METS2014_Final

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

    radiation added---mass and damping terms from other bodies, whereas Babarit [14] 7 considers these terms. Further studies are underway to develop the capability to model off--- diagonal h ydrodynamic f orces f rom o ther b odies. CONCLUSIONS NREL and SNL have developed an open---source numerical m odeling t ool f or d esign a nd a nalysis o f a wide span of WEC devices. In this paper, we applied WEC---Sim to model a two---body floating--- point absorber and two types of oscillating surge

  7. WEC-Sim-METS2014_Final

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

    radiation, added---mass, and damping terms from other bodies in the mass matrix, 7 whereas Babarit [14] considers these terms. Further studies are underway to develop the capability to model off---diagonal hydrodynamic forces f rom o ther b odies. CONCLUSIONS NREL and SNL have developed an open---source numerical m odeling t ool f or d esign a nd a nalysis o f a wide span of WEC devices. In this paper, we applied WEC---Sim to model a two---body floating--- point absorber and two types of

  8. ORNL/RASA-85/

    Office of Legacy Management (LM)

    e?Ll ( U o't /u/ / ORNL/RASA-85/ 4I 4 RESULTS 0FRADI0L0GICALMEASUREMENTSTMENNEA OF BUFFALO AVENUE A'ID HYffi PARK BLVD. IN NIAGARA FALLS' NET{ YORK Access to the inlormation in thit rtport ir limitcd to tho!' ino-icateo on tha distribution list and to oepartmsnt of Encrgy tnd Oepartment ol Enoqy Contracton F This report was prepared as an accountof work sponsored by an agency of the UnitedstatesGovernment.NeithertheUnitedstatesGovernmentnoranyagency thereo|, nor any o| the.r employees, makes any


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

    OF CONTRACT 1.CNRTIDOEPAE1 FI G 4 2. AMENDMENT/MODIFICATION NO. 3. EFFECTIVE DATE (MD Y) 4. REQUISITONPURC1-ASE REQ NO. 5. PROJECT NO. (ijappiceubc) 277 See Block 16C 6. ISSUED BY CODE 7. ADMINISTERED BY (If ther than Item 6) CODE U.S. Department of Energy Office of River Protection P. 0. Box 450, MIS 1-6-60 Richland, WA 99352 8. NAME AND ADDRESS OF CONTRACTOR (No. street, county, State and ZiI' code) 9A AMENDMENT OF SOLICITATION NO. Bechtel National, Inc. 9B. DATED 1 'SEE 171AM )) 2435 Stevens


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


  11. Subsea pipeline isolation systems: Reliability and costs

    SciTech Connect (OSTI)

    Masheder, R.R.


    Since the Piper Alpha disaster, more than 80 subsea isolation systems (SSIS) have been installed in subsea gas and oil pipelines in the U.K. continental shelf at an estimated cost in the region of {Brit_pounds}500 million. The reliability and costs of these installations have now been assessed between Dec. 1992 and Oct. 1993. This assessment was based upon comprehensive reliability and cost databases which were established so that the studies could be based upon factual information in order to obtain a current status as required by the sponsoring group. The study consultants report findings have now been consolidated into a report by the UKOOA Pipeline Valve Work Group. Probabilities of failure for different types of valves and systems have been assessed and expenditures broken down and compared. The results of the studies and the conclusions drawn by UKOOA Pipeline Valve Group and the HSE Offshore Safety Division are presented in this paper.

  12. Re

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

    Re s pons e of a CSRM t o V arying M agnit ude s of Sh ort w av e M ont e Carl o Radiat iv e Trans f e r Nois e Jas on Col e 1 H ow ard Bark e r 2 M arat K h airout dinov 3 Dav id Randal l 3 1 Univ e rs it y of Brit is h Col um bia 2 M e t e orol ogical Se rv ice of Canada 3 Col orado St at e Univ e rs it y 1. I nt roduct ion 4. Re s ul t s (TO GA/ COARE) 2. Expe rim e nt Se t up CSRM Sys t e m f or At m os ph e ric M ode l l ing v e rs ion 6.5 (SAM v 6.5) 2D w it h axis orie nt e d w e s t -e

  13. PDSF User Meeting 06-10-14.pptx

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

    June 1 0, 2 014 Lisa Gerhardt Utilization --- 2 --- Past Outages * 5/13/14 ( all d ay): Q uarterly m aintenance * 6/02/14 - 6 /16/14 ( ish): G lobal s cratch a t 6 0% o f peak d ue t o r olling u pgrade Planned Outages * None Other Topics from PDSF Staff * NERSC i s m oving * Four s tory, 1 40,000 G SF - 300 o ffices o n t wo fl oors - 20K --- > 2 9Ksf H PC fl oor - 12.5MW --- > 4 2 M W t o b uilding * Located for collaboraOon - CRD a nd E Snet - UC B erkeley * ExcepOonal energy efficiency

  14. PDSF User Meeting 07-01-14.pptx

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

    July 1 , 2 014 Lisa Gerhardt Utilization --- 2 --- Past Outages * 6/02/14 - 6 /24/14 ( ish): G lobal s cratch a t 6 0% o f peak d ue t o r olling u pgrade * 6/28/14 - n ow: P roject a t 8 0% o f p eak d ue t o hardware f ailure * 6/30/14 ( 2hours): Global scratch outage from hardware f ailure Planned Outages * Today ( all d ay): E SNet i s d oing m aintenance w ork on N ERSC b order, m ay s how u p a s a N ERSC---wide outage f or a bout 1 0 m inutes * 7/10/14 ( all d ay): p dsfdtn2 o ffline f or

  15. Thermal generation of spin current in epitaxial CoFe2O4 thin films

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

    Guo, Er -Jia; Herklotz, Andreas; Kehlberger, Andreas; Cramer, Joel; Jakob, Gerhard; Klaeui, Mathias


    The longitudinal spin Seebeck effect (LSSE) has been investigated in high-quality epitaxial CoFe2O4 (CFO) thin films. The thermally excited spin currents in the CFO films are electrically detected in adjacent Pt layers due to the inverse spin Hall effect (ISHE). The LSSE signal exhibits a linear increase with increasing temperature gradient, yielding a LSSE coefficient of –100 nV/K at room temperature. The temperature dependence of the LSSE is investigated from room temperature down to 30 K, showing a significant reduction at low temperatures, revealing that the total amount of thermally generated magnons decreases. Moreover, we demonstrate that the spin Seebeckmore » effect is an effective tool to study the magnetic anisotropy induced by epitaxial strain, especially in ultrathin films with low magnetic moments.« less

  16. NERSC_ASCR_Requirements_Review-1.pptx

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

    Linear A lgebra A lgorithms o n High P erformance C omputers Jim Demmel UC B erkeley NERSC ASCR Requirements for 2017 January 15, 2014 LBNL Outline * Goal: i mproved w idely u sed l inear a lgebra (and o ther) l ibraries t o - Minimize d ata m ovement ( most e xpensive opera0on, m easured i n 0 me o r e nergy) - D evelop r eproducible v ersions - A utoma0cally d etermine m inimum p recision needed t o a Nain n eeded a ccuracy * What H W/SW f eatures d o w e n eed t o d o t his? 2.5D M atrix M

  17. Short time proton dynamics in bulk ice and in porous anode solid oxide fuel cell materials

    SciTech Connect (OSTI)

    Basoli, Francesco; Senesi, Roberto; Kolesnikov, Alexander I; Licoccia, Silvia


    Oxygen reduction and incorporation into solid electrolytes and the reverse reaction of oxygen evolution play a cru-cial role in Solid Oxide Fuel Cell (SOFC) applications. However a detailed un derstanding of the kinetics of the cor-responding reactions, i.e. on reaction mechanisms, rate limiting steps, reaction paths, electrocatalytic role of materials, is still missing. These include a thorough characterization of the binding potentials experienced by protons in the lattice. We report results of Inelastic Neutron Scattering (INS) measurements of the vibrational state of the protons in Ni- YSZ highly porous composites (75% to 90% ), a ceramic-metal material showing a high electrical conductivity and ther mal stability, which is known to be most effectively used as anodes for solid ox ide fuel cells. The results are compared with INS and Deep Inelastic Neutron Scattering (DINS) experiments on the proton binding states in bulk ice.

  18. Supporting Advanced Scientific Computing Research * Basic Energy Sciences * Biological

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

    Energy S ciences N etwork Enabling Virtual Science June 9, 2009 Steve C o/er Dept. H ead, E nergy S ciences N etwork Lawrence B erkeley N aDonal L ab The E nergy S ciences N etwork The D epartment o f E nergy's O ffice o f S cience i s o ne o f t he l argest s upporters o f basic r esearch i n t he p hysical s ciences i n t he U .S. * Directly s upports t he r esearch o f s ome 1 5,000 s cienDsts, p ostdocs a nd g raduate s tudents at D OE l aboratories, u niversiDes, o ther F

  19. Jas

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

    Sh ort w av e Radiat iv e T rans f e r in t h e M ul t is cal e M ode l l ing Fram e w ork Jas on Col e 1 H ow ard Bark e r 2 M arat K h airout dinov 3 Dav id Randal l 4 1 Univ e rs it y of Brit is h Col um bia 2 M e t e orol ogical Se rv ice of Canada 3 St ony Brook Univ e rs it y 4 Col orado St at e Univ e rs it y 1. I nt roduct ion 3. Re s ul t s 2. Expe rim e nt Se t up CSRM Sys t e m f or At m os ph e ric M ode l l ing v e rs ion 6.6.5 (SAM v 6.6.5) * 2D w it h axis orie nt e d w e s t -e

  20. Offshore UK; Shell starts Galleon field pre-drilling

    SciTech Connect (OSTI)

    Not Available


    Shell U.K. Exploration and Production (Shell), acting as operator for a consortium of companies, has described plans for the two-phase development of Galleon gas field, located 50 miles from the Shell/Esso gas processing plant at Bacton, Norfolk, in 82 ft of water. The field has estimated reserves of 1.4 Tcf. Phase 1 development will cost [Brit pounds]300 million ($500 million); and first production is expected in late 1994. British Gas has agreed to purchase at least Phase 1 gas. Shell will be the operator for the development. A preliminary costsharing arrangement has been agreed to by the co-venturers to bridge the period until equities are determined. The consortium comprises Shell and Esso, with 40% each, and Conoco (U.K.) Ltd. and Oryx U.K. Energy Co., each with 10%. The field is located in Shell/Esso Blocks 48/14, 19a and 20a, and Conoco/Oryx Block 48/15a. Galleon will be the sixth gas field to be developed in the Southern North Sea by Shell, the operator for Shell and Esso. It will be the third field in the Sole Pit area, where total reserves found by Shell/Esso are about 3.0 Tcf.

  1. High-efficiency CARM

    SciTech Connect (OSTI)

    Bratman, V.L.; Kol`chugin, B.D.; Samsonov, S.V.; Volkov, A.B.


    The Cyclotron Autoresonance Maser (CARM) is a well-known variety of FEMs. Unlike the ubitron in which electrons move in a periodical undulator field, in the CARM the particles move along helical trajectories in a uniform magnetic field. Since it is much simpler to generate strong homogeneous magnetic fields than periodical ones for a relatively low electron energy ({Brit_pounds}{le}1-3 MeV) the period of particles` trajectories in the CARM can be sufficiently smaller than in the undulator in which, moreover, the field decreases rapidly in the transverse direction. In spite of this evident advantage, the number of papers on CARM is an order less than on ubitron, which is apparently caused by the low (not more than 10 %) CARM efficiency in experiments. At the same time, ubitrons operating in two rather complicated regimes-trapping and adiabatic deceleration of particles and combined undulator and reversed guiding fields - yielded efficiencies of 34 % and 27 %, respectively. The aim of this work is to demonstrate that high efficiency can be reached even for a simplest version of the CARM. In order to reduce sensitivity to an axial velocity spread of particles, a short interaction length where electrons underwent only 4-5 cyclotron oscillations was used in this work. Like experiments, a narrow anode outlet of a field-emission electron gun cut out the {open_quotes}most rectilinear{close_quotes} near-axis part of the electron beam. Additionally, magnetic field of a small correcting coil compensated spurious electron oscillations pumped by the anode aperture. A kicker in the form of a sloping to the axis frame with current provided a control value of rotary velocity at a small additional velocity spread. A simple cavity consisting of a cylindrical waveguide section restricted by a cut-off waveguide on the cathode side and by a Bragg reflector on the collector side was used as the CARM-oscillator microwave system.

  2. Anaerobic High-Throughput Cultivation Method for Isolation of Thermophiles Using Biomass-Derived Substrates

    SciTech Connect (OSTI)

    Hamilton-Brehm, Scott; Vishnivetskaya, Tatiana A; Allman, Steve L; Mielenz, Jonathan R; Elkins, James G


    Flow cytometry (FCM) techniques have been developed for sorting mesophilic organisms, but the difficulty increases if the target microbes are thermophilic anaerobes. We demonstrate a reliable, high-throughput method of screening thermophilic anaerobic organisms using FCM and 96-well plates for growth on biomass-relevant substrates. The method was tested using the cellulolytic thermophiles Clostridium ther- mocellum (Topt = 55 C), Caldicellulosiruptor obsidiansis (Topt = 78 C) and the fermentative hyperthermo- philes, Pyrococcus furiosus (Topt = 100 C) and Thermotoga maritima (Topt = 80 C). Multi-well plates were incubated at various temperatures for approximately 72 120 h and then tested for growth. Positive growth resulting from single cells sorted into individual wells containing an anaerobic medium was verified by OD600. Depending on the growth substrate, up to 80 % of the wells contained viable cultures, which could be transferred to fresh media. This method was used to isolate thermophilic microbes from Rabbit Creek, Yellowstone National Park (YNP), Wyoming. Substrates for enrichment cultures including crystalline cellulose (Avicel), xylan (from Birchwood), pretreated switchgrass and Populus were used to cultivate organisms that may be of interest to lignocellulosic biofuel production.

  3. {sup 99m}Tc generators for clinical use based on zirconium molybdate gel and (n, gamma) produced {sup 99}Mo: Indian experience in the development and deployment of indigenous technology and processing facilities

    SciTech Connect (OSTI)

    Saraswathy, P.; Dey, A.C.; Sarkar, S.K.; Kothalkar, C.; Naskar, P.; Arjun, G.; Arora, S.S.; Kohli, A.K.; Meera, V.; Venugopal, V.; Ramamoorthy, N.


    The Indian pursuit of gel generator technology for {sup 99m}Tc was driven mainly by three considerations, namely, (i) well-established and ease of reliable production of (n, gamma)-based {sup 99}Mo in several tens of GBq quantities in the research reactors in Trombay/Mumbai, India, (ii) need for relatively low-cost alternate technology to replace the solvent (MEK) extraction generator system in use in India since 1970s and (iii) minimize dependency on weekly import of fission-produced {sup 99}Mo raw material required for alumina column generator. Extensive investigations on process standardisation for zirconium molybdate gel (ZMG) led to a steady progress, achieved both in terms of process technology and final performance of {sup 99m}Tc gel generators. The {sup 99m}Tc final product purity from the Indian gel system was comparable to that obtained from the gold-standard alumina column generators. Based on the feasibility established for reliable small-scale production, as well as satisfactory clinical experience with a number of gel generators used in collaborating hospital radiopharmacies, full-fledged mechanised processing facilities for handling up to 150 g of ZMG were set up. The indigenous design and development included setting up of shielded plant facilities with pneumatic-driven as well as manual controls and special gadgets such as, microwave heating of the zirconium molybdate cake, dispenser for gel granules, loading of gel columns into pre-assembled generator housing etc. Formal review of the safety features was carried out by the regulatory body and stage-wise clearance for processing low and medium level {sup 99}Mo activity was granted. Starting from around 70 GBq {sup 99}Mo handling, the processing facilities have since been successfully operated at a level of 740 GBq {sup 99}Mo, twice a month. In all 18 batches of gel have been processed and 156 generators produced. The individual generator capacity was 15 to 30 GBq with an elution yield of nearly 75%. 129 generators were supplied to 11 user hospitals and the estimated number of clinical studies done is well over 5000. The salient aspects of the Indian experience have been reported in many a forum and shared with the IAEA through the on-going CRP. The detailed process know-how is available for technology transfer from BRIT, India. (author)

  4. Potential role of the Fast Flux Test Facility and the advanced test reactor in the U.S. tritium production system

    SciTech Connect (OSTI)

    Dautel, W.A.


    The Deparunent of Energy is currently engaged in a dual-track strategy to develop an accelerator and a conunercial light water reactor (CLWR) as potential sources of tritium supply. New analysis of the production capabilities of the Fast Flux Test Facility (FFTF) at the Hanford Site argues for considering its inclusion in the tritium supply,system. The use of the FFTF (alone or together with the Advanced Test Reactor [ATR] at the Idaho National Engineering Laboratory) as an integral part of,a tritium production system would help (1) ensure supply by 2005, (2) provide additional time to resolve institutional and technical issues associated with the- dual-track strategy, and (3) reduce discounted total life-cycle`costs and near-tenn annual expenditures for accelerator-based systems. The FFRF would also provide a way to get an early start.on dispositioning surplus weapons-usable plutonium as well as provide a source of medical isotopes. Challenges Associated With the Dual-Track Strategy The Departinent`s purchase of either a commercial reactor or reactor irradiation services faces challenging institutional issues associated with converting civilian reactors to defense uses. In addition, while the technical capabilities of the individual components of the accelerator have been proven, the entire system needs to be demonstrated and scaled upward to ensure that the components work toge ther 1548 as a complete production system. These challenges create uncertainty over the ability of the du2a-track strategy to provide an assured tritium supply source by 2005. Because the earliest the accelerator could come on line is 2007, it would have to operate at maximum capacity for the first few years to regenerate the reserves lost through radioactive decay aftei 2005.

  5. Radiolabeled technetium chelates for use in renal function determinations

    DOE Patents [OSTI]

    Fritzberg, Alan; Kasina, Sudhakar; Johnson, Dennis L.


    The present invention is directed to novel radiopharmaceutical imaging agents incorporating Tc-99m as a radiolabel. In particular, the novel imaging agents disclosed herein have relatively high renal extraction efficiencies, and hence are useful for conducting renal function imaging procedures. The novel Tc-99m compounds of a present invention have the following general formula: ##STR1## wherein X is S or N; and wherein Y is--H or wherein Y is ##STR2## and where R.sub.1 is --H, --CH.sub.3, or --CH.sub.2 CH.sub.3 ; R.sub.2 is --H, --CH.sub.2 CO.sub.2 H, --CH.sub.2 CONH.sub.2, --CH.sub.2 CH.sub.2 CO.sub.2 H, --CH.sub.2 CH.sub.2 CONH.sub.2, --CH.sub.3, --CH.sub.2 CH.sub.3, CH.sub.2 C.sub.6 H.sub.5, or --CH.sub.2 OH; and Z is --H, --CO.sub.2 H, --CONH.sub.2, --SO.sub.3 H, --SO.sub.2 NH.sub.2, or --CONHCH.sub.2 CO.sub.2 H; and the Tc is Tc-99m; and water-soluble salts thereof. Of the foregoing, the presently preferred Tc-99m compound of the present invention is Tc-99m-mercaptoacetylglycylglycylglycine (Tc-99m-MAGGG). The present invention is also directed to novel chelating agents that may be reacted with Tc-99m to form the foregoing compounds. Such novel chelating agents have the following general formula. ##STR3## where X and Y have the same definitions as above, and wherein Y' is --H.sub.2 when X is N, or wherein Y' is --H, or a suitable protective group such as --COCH.sub.3, --COC.sub.6 H.sub.5, --CH.sub.2 NHCOCH.sub.3, --COCF.sub.3, or --COCH.sub.2 OH when X is S. The present invention also provides methods for preparing and using the novel Tc-99m compounds.

  6. High Power Coax Window

    SciTech Connect (OSTI)

    Neubauer, M. L.; Dudas, A.; Sah, R.; Elliott, T. S.; Rimmer, R. A.; Stirbet, M. S.


    A su­per­con­duct­ing RF (SRF) power cou­pler ca­pa­ble of han­dling 500 kW CW RF power is re­quired for pre­sent and fu­ture stor­age rings and linacs. There are over 35 cou­pler de­signs for SRF cav­i­ties rang­ing in fre­quen­cy from 325 to 1500 MHz. Cou­pler win­dows vary from cylin­ders to cones to disks, and RF power cou­plers are lim­it­ed by the abil­i­ty of ce­ram­ic win­dows to with­stand the stress­es due to heat­ing and me­chan­i­cal flex­ure. We pro­pose a novel ro­bust co-ax­i­al SRF cou­pler de­sign which uses com­pressed win­dow tech­nol­o­gy. This tech­nol­o­gy will allow the use of high­ly ther­mal­ly con­duc­tive ma­te­ri­als for cryo­genic win­dows. Using com­pressed win­dow tech­niques on disk co-ax­i­al win­dows will make sig­nif­i­cant im­prove­ments in the power han­dling of SRF cou­plers. We pre­sent the bench test re­sults of two win­dow as­sem­blies back to back, as well as in­di­vid­u­al win­dow VSWR in EIA3.125 coax. A vac­u­um test as­sem­bly was made and the win­dows baked out at 155C. The pro­cess­es used to build win­dows is scal­able to larg­er di­am­e­ter coax and to high­er power lev­els.

  7. A Flow-Channel Analysis for the Mars Hopper

    SciTech Connect (OSTI)

    W. Spencer Cooley


    The Mars Hopper is an exploratory vehicle designed to fly on Mars using carbon dioxide from the Martian atmosphere as a rocket propellant. The propellent gasses are thermally heated while traversing a radioisotope ther- mal rocket (RTR) engine’s core. This core is comprised of a radioisotope surrounded by a heat capacitive material interspersed with tubes for the propellant to travel through. These tubes, or flow channels, can be manu- factured in various cross-sectional shapes such as a special four-point star or the traditional circle. Analytical heat transfer and computational fluid dynamics (CFD) anal- yses were performed using flow channels with either a circle or a star cross- sectional shape. The nominal total inlet pressure was specified at 2,805,000 Pa; and the outlet pressure was set to 2,785,000 Pa. The CO2 inlet tem- perature was 300 K; and the channel wall was 1200 K. The steady-state CFD simulations computed the smooth-walled star shape’s outlet temper- ature to be 959 K on the finest mesh. The smooth-walled circle’s outlet temperature was 902 K. A circle with a surface roughness specification at 0.01 mm gave 946 K and at 0.1 mm yielded 989 K. The The effects of a slightly varied inlet pressure were also examined. The analytical calculations were based on the mass flow rates computed in the CFD simulations and provided significantly higher outlet temperature results while displaying the same comparison trends. Research relating to the flow channel heat transfer studies was also done. Mathematical methods to geometrically match the cross-sectional areas of the circle and star, along with a square and equilateral triangle, were derived. A Wolfram Mathematica 8 module was programmed to analyze CFD results using Richardson Extrapolation and calculate the grid convergence index (GCI). A Mathematica notebook, also composed, computes and graphs the bulk mean temperature along a flow channel’s length while the user dynam- ically provides the input variables, allowing their effects on the temperature to be more easily observed.

  8. GIS-and Web-based Water Resource Geospatial Infrastructure for Oil Shale Development

    SciTech Connect (OSTI)

    Zhou, Wei; Minnick, Matthew; Geza, Mengistu; Murray, Kyle; Mattson, Earl


    The Colorado School of Mines (CSM) was awarded a grant by the National Energy Technology Laboratory (NETL), Department of Energy (DOE) to conduct a research project en- titled GIS- and Web-based Water Resource Geospatial Infrastructure for Oil Shale Development in October of 2008. The ultimate goal of this research project is to develop a water resource geo-spatial infrastructure that serves as “baseline data” for creating solutions on water resource management and for supporting decisions making on oil shale resource development. The project came to the end on September 30, 2012. This final project report will report the key findings from the project activity, major accomplishments, and expected impacts of the research. At meantime, the gamma version (also known as Version 4.0) of the geodatabase as well as other various deliverables stored on digital storage media will be send to the program manager at NETL, DOE via express mail. The key findings from the project activity include the quantitative spatial and temporal distribution of the water resource throughout the Piceance Basin, water consumption with respect to oil shale production, and data gaps identified. Major accomplishments of this project include the creation of a relational geodatabase, automated data processing scripts (Matlab) for database link with surface water and geological model, ArcGIS Model for hydrogeologic data processing for groundwater model input, a 3D geological model, surface water/groundwater models, energy resource development systems model, as well as a web-based geo-spatial infrastructure for data exploration, visualization and dissemination. This research will have broad impacts of the devel- opment of the oil shale resources in the US. The geodatabase provides a “baseline” data for fur- ther study of the oil shale development and identification of further data collection needs. The 3D geological model provides better understanding through data interpolation and visualization techniques of the Piceance Basin structure spatial distribution of the oil shale resources. The sur- face water/groundwater models quantify the water shortage and better understanding the spatial distribution of the available water resources. The energy resource development systems model reveals the phase shift of water usage and the oil shale production, which will facilitate better planning for oil shale development. Detailed descriptions about the key findings from the project activity, major accomplishments, and expected impacts of the research will be given in the sec- tion of “ACCOMPLISHMENTS, RESULTS, AND DISCUSSION” of this report.