Sample records for fp con cr

  1. 58 Foreign Policy FP MEMOURGENT

    E-Print Network [OSTI]

    58 Foreign Policy THE FP MEMOURGENT: To restore its credibility, the IMF must represent all its, and exchange-rate policy, you must learn to represent the entire world, not just the U.S. and European of the imf vote, with just 13 percent of the population. China and India comprise 38 percent of the world

  2. Blanchard Cr JohnsonGulch

    E-Print Network [OSTI]

    Dirt yfaceCr Sheep Cr Essex Cr Dic key Cr Paola Cr Cr ystalCr Deerlick Cr Howe Cr M id dle Fork FlatheadRiver Mid dle Fork Bowl C r So u th Fork Scalp Cr West Fork WhistlerCr GraniteCr DodgeCr Flathea d

  3. TTUS FP&C Design & Building Standards Division 3 Concrete

    E-Print Network [OSTI]

    Gelfond, Michael

    All concrete products shall be designed, formed, transported, placed, tested, and finished in strict accordance with the American Society for Testing and Materials (ASTM) and the American Concrete Institute, and submit test reports during concrete placement. Page 1 of 4 #12;TTUS FP&C Design & Building

  4. Euratom Programme for Nuclear Research and Training FP7-Fission-2009 GUIDE FOR APPLICANTS

    E-Print Network [OSTI]

    De Cindio, Fiorella

    Euratom Programme for Nuclear Research and Training FP7-Fission-2009 1 GUIDE FOR APPLICANTS All Programme for Nuclear Research and Training FP7-Fission-2009 2 About this Guide This is version 4 (dated 19 does not supersede those documents. #12;Euratom Programme for Nuclear Research and Training FP7-Fission

  5. Euratom Programme for Nuclear Research and Training FP7-Fission-2008 GUIDE FOR APPLICANTS

    E-Print Network [OSTI]

    De Cindio, Fiorella

    Euratom Programme for Nuclear Research and Training FP7-Fission-2008 1 GUIDE FOR APPLICANTS All Programme for Nuclear Research and Training FP7-Fission-2008 2 About this Guide This is version 3 (dated 20 funding schemes Euratom Programme for Nuclear Research and Training Activities Call Identifier: FP7

  6. Rotational order–disorder structure of fluorescent protein FP480

    SciTech Connect (OSTI)

    Pletnev, Sergei, E-mail: svp@ncifcrf.gov [SAIC-Frederick Inc., Basic Research Program, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439 (United States); Morozova, Kateryna S.; Verkhusha, Vladislav V. [Department of Anatomy and Structural Biology, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, New York 10461 (United States); Dauter, Zbigniew, E-mail: svp@ncifcrf.gov [Synchrotron Radiation Research Section, MCL, National Cancer Institute, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439 (United States); SAIC-Frederick Inc., Basic Research Program, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439 (United States)

    2009-09-01T23:59:59.000Z

    An analysis of the rotational order–disorder structure of fluorescent protein FP480 is presented. In the last decade, advances in instrumentation and software development have made crystallography a powerful tool in structural biology. Using this method, structural information can now be acquired from pathological crystals that would have been abandoned in earlier times. In this paper, the order–disorder (OD) structure of fluorescent protein FP480 is discussed. The structure is composed of tetramers with 222 symmetry incorporated into the lattice in two different ways, namely rotated 90° with respect to each other around the crystal c axis, with tetramer axes coincident with crystallographic twofold axes. The random distribution of alternatively oriented tetramers in the crystal creates a rotational OD structure with statistically averaged I422 symmetry, although the presence of very weak and diffuse additional reflections suggests that the randomness is only approximate.

  7. Blanchard Cr West Fk Clearwater R

    E-Print Network [OSTI]

    Dirt yfaceCr Sheep Cr Essex Cr Dick ey Cr Paola Cr Cry stalCr Deerlick Cr Howe Cr M id dle Fork FlatheadRiver Mid dle Fork Bowl Cr So u th Fork Scalp Cr West Fork WhistlerCr GraniteCr DodgeCr Flathead

  8. Smart System Integration in FP7 Challenges and Options for Europe

    E-Print Network [OSTI]

    Meju, Max

    Smart System Integration in FP7 ­ Challenges and Options for Europe NEXUSplusNEXUSplus Annual and Nanosystems European Commission, Brussels #12;Presentation outline · Smart Systems Integration: Activities Work Programme 2007-08 · Outlook #12;Smart Systems Integration: Thematic areas covered (FP6) · Micro

  9. Euratom Programme for Nuclear Research and Training Guide for Applicants: FP7-Fission-2007 GUIDE FOR APPLICANTS

    E-Print Network [OSTI]

    De Cindio, Fiorella

    Euratom Programme for Nuclear Research and Training Guide for Applicants: FP7-Fission-2007 i GUIDE FOR APPLICANTS Euratom Programme for Nuclear Research and Training Activities Call Identifier: FP7-Fission-2007 Programme for Nuclear Research and Training Guide for Applicants: FP7-Fission-2007 iii Contents TU1UT

  10. FP7 EURATOM for Nuclear Research and Training Activities Work Programme

    E-Print Network [OSTI]

    De Cindio, Fiorella

    FP7 EURATOM for Nuclear Research and Training Activities Work Programme Call Fiche Call Identifier Funding Schemes Fission-2007-1.1.1: Phenomenology and performance assessment Collaborative project assessment methodologies Coordination action Reactor Systems: Nuclear installation safety Fission-2007

  11. Temescal FC-2000 Electron Beam Evaporator CORAL NAME = EbeamFP

    E-Print Network [OSTI]

    Reif, Rafael

    Temescal FC-2000 Electron Beam Evaporator CORAL NAME = EbeamFP STANDARD OPERATING PROCEDURE immediately, via CORAL. Operating the System 1. Engage the machine in Coral 2. From the Monitor's main Screen

  12. Rare Earth ? N = N* fs fGHZ fp nH fl

    E-Print Network [OSTI]

    Walter, Frederick M.

    Rare Earth ? #12;N to date N = N* fs fGHZ fp nH fl ·N* = 4 x 1011 ·fs = 0.2 ·fGHZ = 0.1 ·fp = 0.8 ·nH = 2 ·fl = 1.0 N = 1.3 x 1010 #12;The Goldilocks Effect Earth is "Just Right" Yes, life on Earth has adapted to Earth, but ... Earth has just the right mass to be ·Tectonically-active ·Retain

  13. Experimental study of upper sd shell nuclei and evolution of sd-fp shell gap

    SciTech Connect (OSTI)

    Sarkar, M. Saha [Saha Institute of Nuclear Physics, Kolkata - 700064 (India)

    2012-06-27T23:59:59.000Z

    The intruder orbitals from the fp shell play important role in the structure of nuclei around the line of stability in the upper sd shell. Experimentally we have studied {sup 35}Cl, {sup 30}P, {sup 36}Cl, {sup 37}Ar and {sup 34}Cl in this mass region using the INGA setup. Large basis cross-shell shell model calculations have indicated the need for change of the sd-fp energy gap for reliable reproduction of negative parity and high spin positive parity states. Indication of population of states of large deformation has been found in our data. Theoretical interpretation of these states has been discussed.

  14. ESTUDIOS GENERALES: Cdigo Asignatura CR Requisitos Profesor Bloq Horario Resumen

    E-Print Network [OSTI]

    Vásquez, Carlos

    cuyas implicaciones de carácter social, ético y legal deben ser del conocimiento de nuestros estudiantes. Con el fin de entender y manejar moléculas esenciales para la existencia, bienestar y supervivencia de CIENCIAS SOCIALES Y HUMANIDADES Departamento: CIENCIAS SOCIALES Código Asignatura CR Requisitos Profesor

  15. GROWTH OF POSITIVE WORDS AND LOWER BOUNDS OF THE GROWTH RATE FOR THOMPSON'S GROUPS F(p)

    E-Print Network [OSTI]

    Burillo, José

    GROWTH OF POSITIVE WORDS AND LOWER BOUNDS OF THE GROWTH RATE FOR THOMPSON'S GROUPS F(p) JOS´E BURILLO AND VICTOR GUBA Abstract. Let F(p), p 2 be the family of generalized Thompson's groups. Here F(2) is the famous Richard Thompson's group usually denoted by F. We find the growth rate of the monoid of positive

  16. Electronics I 4 cr with Lab

    E-Print Network [OSTI]

    Carver, Jeffrey C.

    ECE 332 Electronics I 4 cr with Lab ECE 370 Signals & Systems 3 cr co ECE 225 Electric Circuits 3 106 - 4 cr General Physics with Calculus CS 116 - 1 cr Intro to Comp. Program. Lab co MATH 227 4 cr cr Department of Electrical and Computer Engineering -- Department of Physics and Astromony

  17. P\\procedure\\FP#36 TITLE: GREEN BUILDING POLICY PROMOTING ENVIRONMENTAL QUALITY AND

    E-Print Network [OSTI]

    Fernandez, Eduardo

    P\\procedure\\FP#36 TITLE: GREEN BUILDING POLICY PROMOTING ENVIRONMENTAL QUALITY AND RESOURCE the U.S. Green Building Council's LEED Silver standard or equivalent. This policy will be limited% of building replacement value". RESPONSIBILITY: ACTION FACILITIES PLANNING DIRECTOR Ensure that the green

  18. TidFP: Mining Frequent Patterns in Different Databases with Transaction ID

    E-Print Network [OSTI]

    Ezeife, Christie

    techniques as well as sequential mining. Keywords: Data mining, Transaction id, Frequent PatternsTidFP: Mining Frequent Patterns in Different Databases with Transaction ID C.I. Ezeife and Dan) are unique and would not usually be frequent, mining frequent patterns with transaction ids, show- ing

  19. Call title: "The ocean of tomorrow" Call identifier: FP7-OCEAN-2010

    E-Print Network [OSTI]

    Milano-Bicocca, Università

    challenges in ocean management Theme 5 ­ Energy Area ENERGY.10.1 Call "The ocean of tomorrow" ­ Joining1 Call title: "The ocean of tomorrow" · Call identifier: FP7-OCEAN-2010 · Date of publication: 30, and Biotechnology (KBBE) - EUR 6 million from Theme 5 ­ Energy - EUR 10.5 million from Theme 6 ­ Environment

  20. UCRL-CR-104544

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over OurThe Iron Spin TransitionProgram | Department HomeDialoguet e d N a tf^CR-104544

  1. First-principles calculation of Z2 topological invariants within the FP-LAPW formalism

    SciTech Connect (OSTI)

    Feng, wanxiang [Chinese Academy of Sciences; Wen, Jun [University of Texas, Austin; Zhou, Jinjian [Beijing National Laboratory for Condensed Matter Physics/Chinese Academy of Scie; Xiao, Di [ORNL; Yao, yugui [Chinese Academy of Sciences

    2012-01-01T23:59:59.000Z

    n this paper, we report the implementation of first-principles calculations of Z2 topological invariants within the full-potential linearized augmented plane-wave (FP-LAPW) formalism. In systems with both time-reversal and spatial inversion symmetry (centrosymmetric), one can use the parity analysis of Bloch functions at time-reversal invariant momenta to determine the Z2 invariants. In systems without spatial inversion symmetry (noncentrosymmetric), however, a more complex and systematic method in terms of the Berry gauge potential and the Berry curvature is required to identify the band topology. We show in detail how both methods are implemented in FP-LAPW formalism and applied to several classes of materials including centrosymmetric compounds Bi2Se3 and Sb2Se3 and noncentrosymmetric compounds LuPtBi, AuTlS2 and CdSnAs2. Our work provides an accurate and effective implementation of first-principles calculations to speed up the search of new topological insulators.

  2. Effects of PGF{sub 2{alpha}} on human melanocytes and regulation of the FP receptor by ultraviolet radiation

    SciTech Connect (OSTI)

    Scott, Glynis [Department of Dermatology, University of Rochester School of Medicine, Box 697, 601 Elmwood Avenue, Rochester, NY 14642 (United States)]. E-mail: Glynis_Scott@urmc.rochester.edu; Jacobs, Stacey [Department of Dermatology, University of Rochester School of Medicine, Box 697, 601 Elmwood Avenue, Rochester, NY 14642 (United States); Leopardi, Sonya [Department of Dermatology, University of Rochester School of Medicine, Box 697, 601 Elmwood Avenue, Rochester, NY 14642 (United States); Anthony, Frank A. [Schering-Plough HealthCare Products Inc., Memphis TN (United States); Learn, Doug [Charles River DDS, Argus Division, Horsham, PA (United States); Malaviya, Rama [University of Medicine and Dentistry, RWJMS, New Brunswick, NJ (United States); Pentland, Alice [Department of Dermatology, University of Rochester School of Medicine, Box 697, 601 Elmwood Avenue, Rochester, NY 14642 (United States)

    2005-04-01T23:59:59.000Z

    Prostaglandins are potent lipid hormones that activate multiple signaling pathways resulting in regulation of cellular growth, differentiation, and apoptosis. In the skin, prostaglandins are rapidly released by keratinocytes following ultraviolet radiation and are chronically present in inflammatory skin lesions. We have shown previously that melanocytes, which provide photoprotection to keratinocytes through the production of melanin, express several receptors for prostaglandins, including the PGE{sub 2} receptors EP{sub 1} and EP{sub 3} and the PGF{sub 2{alpha}} receptor FP, and that PGF{sub 2{alpha}} stimulates melanocyte dendricity. We now show that PGF{sub 2{alpha}} stimulates the activity and expression of tyrosinase, the rate-limiting enzyme in melanin synthesis. Analysis of FP receptor regulation showed that the FP receptor is regulated by ultraviolet radiation in melanocytes in vitro and in human skin in vivo. We also show that ultraviolet irradiation stimulates production of PGF{sub 2{alpha}} by melanocytes. These results show that PGF{sub 2{alpha}} binding to the FP receptor activates signals that stimulate a differentiated phenotype (dendricity and pigmentation) in melanocytes. The regulation of the FP receptor and the stimulation of production of PGF{sub 2{alpha}} in melanocytes in response to ultraviolet radiation suggest that PGF{sub 2{alpha}} could act as an autocrine factor for melanocyte differentiation.

  3. Improvement of SOFC Electrodes through Catalyst Infiltration & Control of Cr Volatilization from FeCr Components

    SciTech Connect (OSTI)

    Visco, S.J.; Jacobson, C.; Kurokawa, H.; Sholklapper, T.; Lu, C.; De Jonghe, L.

    2005-01-28T23:59:59.000Z

    This presentation discusses the improvement of SOFC electrodes through catalyst infiltration and control of Cr volatilization from FeCr components.

  4. Underpinning Mathematics/Science: (min 40 cr) Mathematics (16 cr)

    E-Print Network [OSTI]

    Wisconsin at Madison, University of

    Materials Science and Engineering BS Degree Requirements for students beginning in or after Fall 2011 04 324 Introductory Applied Statistics for Engineers Physics (10 cr) Phys 201 or Phys 207 or Phys 247 Modern Physics for Engineers Phys 235 Introduction to Solid State Electronics Phys 241 Intro to Modern

  5. [30] F.P. Preparata and M.I. Shamos, Computational geometry: an introduction, Springer Verlag, New York (1985).

    E-Print Network [OSTI]

    Utrecht, Universiteit

    1985-01-01T23:59:59.000Z

    York (1985). [31] F.P. Preparata and R. Tamassia, Efficient spatial point location, Proc. 1st Work). [17] M.T. Goodrich and R. Tamassia, Dynamic trees and dynamic point location, Proc. 23rd ACM Symp 11 (1994), pp. 393­418. [3] H. Alt, R. Fleischer, M. Kaufmann, K. Mehlhorn, S. N¨ aher, S. Schirra

  6. al cd cr: Topics by E-print Network

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

    junctions with CrFe and CrFeCr barriers. Although the exact... Robinson, J. W. A.; Banerjee, N.; Blamire, M. G. 2014-03-05 134 SEM CR GRADE Intro to Chem Eng 1 Engineering...

  7. al cr fe: Topics by E-print Network

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

    junctions with CrFe and CrFeCr barriers. Although the exact... Robinson, J. W. A.; Banerjee, N.; Blamire, M. G. 2014-03-05 15 Cavitation erosion of laser processed Fe-Cr-Mn and...

  8. Cr Atom Alignment in Cr-Delta-Doped GaN

    SciTech Connect (OSTI)

    Kimura, S.; Emura, S.; Zhou, Y. K.; Choi, S. W.; Yamauchi, Y.; Hasegawa, S.; Asahi, H. [Institute of Scientific and Industrial Research, Osaka University, 8-1, Mihogaoka, Osaka, 567-0047 (Japan); Ofuchi, H. [SPring-8 / Japan Synchrotron Radiation Research Institute (JASRI), Sayo, Hyogo 679-5198 (Japan); Nakata, Y. [College of Science and Engineering, Iwaki Meisei University, Iwaki, Fukushima 970-8551 (Japan)

    2007-02-02T23:59:59.000Z

    Structural properties and Cr atom alignments in Cr-delta doped GaN grown by molecular beam epitaxy are studied with transmission electron microscopy and X-ray absorption fine structure (XAFS) measurements. It is found that the environment around Cr atoms in delta-doped samples is dramatically changed under various growth conditions. The XAFS analysis of these synthesized layers suggests that new Cr-related complexes are grown.

  9. SEM CR GRADE Intro to Chem Eng 1

    E-Print Network [OSTI]

    New Hampshire, University of

    Elective Option Elective 2 SEM CR GRADE 4 CHE 705 or CHE 712 Fossil Fuels or Nuclear Engineering SEM CR GRADE 4 CHE 712 or CHE 705 Nuclear Engineering or Fossil Fuels STUDENT NAME ADVISOR NAME #12;Chemical Chemistry SEM CR GRADE 3 CHE 601 Fluid Mechanics SEM CR GRADE 3 CHE 604 ChE Thermodynamics SEM CR GRADE 4

  10. SEM CR GRADE Intro to Chem Eng 1

    E-Print Network [OSTI]

    New Hampshire, University of

    or Nuclear Engineering SEM CR GRADE 4 CHE 712 or CHE 705 Nuclear Engineering or Fossil Fuels Sem: 16 Cum: 132 students see "Advising Notes" on back page SEM CR GRADE 3 CHE 601 Fluid Mechanics SEM CR GRADE 3 CHE 604 Ch of 3 SEM CR GRADE 4 CHE 761 Biochemical Engineering SEM CR GRADE 4 CHE 705 or CHE 712 Fossil Fuels

  11. SEM CR GRADE Intro to Chem Eng 1

    E-Print Network [OSTI]

    New Hampshire, University of

    E Majors Energy Option Page 1 of 3 SEM CR GRADE 4 CHE 705 or CHE 712 Fossil Fuels or Nuclear Engineering Chemistry SEM CR GRADE 3 CHE 601 Fluid Mechanics SEM CR GRADE 3 CHE 604 ChE Thermodynamics SEM CR GRADE 3 Energy Option Elective Option Elective 2 SEM CR GRADE 4 CHE 712 or CHE 705 Nuclear Engineering or Fossil

  12. Crystallographic study of red fluorescent protein eqFP578 and its far-red variant Katushka reveals opposite pH-induced isomerization of chromophore

    SciTech Connect (OSTI)

    Pletneva, Nadya V.; Pletnev, Vladimir Z.; Shemiakina, Irina I.; Chudakov, Dmitriy M.; Artemyev, Igor; Wlodawer, Alexander; Dauter, Zbigniew; Pletnev, Sergei (Russ. Acad. Sci.); (SAIC); (NCI)

    2012-08-10T23:59:59.000Z

    The wild type red fluorescent protein eqFP578 (from sea anemone Entacmaea quadricolor, {lambda}{sub ex} = 552 nm, {lambda}{sub em} = 578 nm) and its bright far-red fluorescent variant Katushka ({lambda}{sub ex} = 588 nm, {lambda}{sub em} = 635 nm) are characterized by the pronounced pH dependence of their fluorescence. The crystal structures of eqFP578f (eqFP578 with two point mutations improving the protein folding) and Katushka have been determined at the resolution ranging from 1.15 to 1.85 {angstrom} at two pH values, corresponding to low and high level of fluorescence. The observed extinguishing of fluorescence upon reducing pH in eqFP578f and Katushka has been shown to be accompanied by the opposite trans-cis and cis-trans chromophore isomerization, respectively. Asn143, Ser158, His197 and Ser143, Leu174, and Arg197 have been shown to stabilize the respective trans and cis fluorescent states of the chromophores in eqFP578f and Katushka at higher pH. The cis state has been suggested as being primarily responsible for the observed far-red shift of the emission maximum of Katushka relative to that of eqFP578f.

  13. FP06 4:lOProceedingsof the 35th Conferenceon Decisionand Control

    E-Print Network [OSTI]

    Antsaklis, Panos

    procedures are presented for automatically generating controllers for plants that incorporate un of unobservable plant transi- tions is int,roducedhere and incorporated into the con- troller design procedure.ints on the plant state p, E Z f n , p p2 0 of tjheform LI", 5 b (1) where L E ZncXm,b E Zncand Zis the set

  14. Watermelon-like iron nanoparticles: Cr doping effect on magnetism...

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

    Watermelon-like iron nanoparticles: Cr doping effect on magnetism and magnetization interaction reversal. Watermelon-like iron nanoparticles: Cr doping effect on magnetism and...

  15. CR-B-02-02.PUB

    Energy Savers [EERE]

    CR-B-02-02 AUDIT REPORT U.S. DEPARTMENT OF ENERGY OFFICE OF INSPECTOR GENERAL OFFICE OF AUDIT SERVICES PROCUREMENT ADMINISTRATION AT BROOKHAVEN NATIONAL LABORATORY AUGUST 2002 U....

  16. CORE BUSINESS COURSES ACCT 210 ACCOUNTING CR

    E-Print Network [OSTI]

    Shihadeh, Alan

    P.O.Box: CORE BUSINESS COURSES ACCT 210 ACCOUNTING CR ACCT 215 ACCT 217 to ACCT 250 3 BUSS 200 ACCT 217 to ACCT 250 3 BUSS 211 ACCT 217 to ACCT 250 3 BUSS 230 ACCT 217 to ACCT 250 3 BUSS 239 Any business elective 3 BUSS 240 Total Crs 15 BUSS 245 BIDS CR BUSS 248 INFO 205 3 BUSS 249 DCSN 205 3 DCSN 200

  17. Investigation of microstructure and mechanical properties of multi-layer Cr/Cr2O3 coatings

    E-Print Network [OSTI]

    Volinsky, Alex A.

    as a selective solar ray collector and for other applications as a protective coating against wear, corrosionInvestigation of microstructure and mechanical properties of multi-layer Cr/Cr2O3 coatings Xiaolu-layer Microstructure Fracture toughness Adhesion Single and multi-layer Cr/Cr2O3 coatings were deposited by reactive

  18. Multireference Ab Initio Study of the Ground and Low-Lying Excited States of Cr(CO)2 and Cr(CO)3

    E-Print Network [OSTI]

    Ihee, Hyotcherl

    Multireference Ab Initio Study of the Ground and Low-Lying Excited States of Cr(CO)2 and Cr(CO)3 chromium carbonyls, Cr(CO)2 and Cr(CO)3, using multiconfigurational ab initio perturbation theory. Unlike of the ground states of Cr(CO)2 and Cr(CO)3. From multireference ab initio calculations considering the full

  19. Comparison of isotropic elasto-plastic models for the plastic metric tensor $C_p=F_p^T\\, F_p$

    E-Print Network [OSTI]

    Patrizio Neff; Ionel-Dumitrel Ghiba

    2014-10-08T23:59:59.000Z

    We discuss in detail existing isotropic elasto-plastic models based on 6-dimensional flow rules for the positive definite plastic metric tensor $C_p=F_p^T\\, F_p$ and highlight their properties and interconnections. We show that seemingly different models are equivalent in the isotropic case.

  20. ULTimateCO2 : A FP7 European Project dedicated to the understanding of the long term fate of geologically stored CO2

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ULTimateCO2 : A FP7 European Project dedicated to the understanding of the long term fate of geologically stored CO2 Audigane, P.1 , Brown, S.2 , Dimier A.3 , Frykman P.4 , Gherardi F.5 , Le Gallo Y.6 Recherches Géologiques et minières - France 2 CO2SENSE limited, United Kingdom 3 EIFER, EIFER europaisches

  1. CONVNIOS, PROJETOS, COOPERAES INTERNACIONAIS 2012-2013: Projeto MCT/CNPq No. 066/2010 (FP7-2011-EU-Brazil) "Technology

    E-Print Network [OSTI]

    Paraná, Universidade Federal do

    /2010 (FP7-2011-EU-Brazil) "Technology platform for point-of-care diagnostics for tropical deseases. 2010 - 2014: Titulo: P116M100008 - Sustainable Energy and Aeronautical Engineering - U.S.-Brazil Higher of Pittsburgh; Brazil Lead: Universidade Federal de Itajuba & Brazil Partner: Federal University of Parana

  2. Offshore wind resource assessment in European Seas, state-of-the art. A survey within the FP6 "POW'WOW" Coordination Action Project.

    E-Print Network [OSTI]

    , Germany (5) FORWIND, University of Oldenburg, Germany ABSTRACT To plan an offshore wind farm, a careful 1999, large wind farms with wind turbines up to 5 MW have been erected offshore especially in the NorthOffshore wind resource assessment in European Seas, state-of- the ­art. A survey within the FP6

  3. -delayed proton emission branches in 43Cr

    SciTech Connect (OSTI)

    Pomorski, M. [University of Warsaw; Miernik, K. [University of Warsaw; Dominik, W. [University of Warsaw; Janas, Z. [University of Warsaw; Pfutzner, M. [University of Warsaw; Bingham, C. R. [University of Tennessee, Knoxville (UTK); Czyrkowski, H. [University of Warsaw; Cwiok, Mikolaj [Warsaw University; Darby, Iain [University of Tennessee, Knoxville (UTK); Dabrowski, Ryszard [Warsaw University; Ginter, T. N. [Michigan State University, East Lansing; Grzywacz, Robert Kazimierz [ORNL; Karny, M. [University of Warsaw; Korgul, A. [University of Warsaw; Kusmierz, W. [University of Warsaw; Liddick, Sean [University of Tennessee, Knoxville (UTK); Rajabali, M. M. [University of Tennessee, Knoxville (UTK); Rykaczewski, Krzysztof Piotr [ORNL; Stolz, A. [Michigan State University, East Lansing

    2011-01-01T23:59:59.000Z

    The + decay of very neutron-deficient 43Cr was studied by means of an imaging time projection chamber that allowed recording tracks of charged particles. Events of -delayed emission of one, two, and three protons were clearly identified. The absolute branching ratios for these channels were determined to be (81 4)%, (7.1 0.4)%, and (0.08 0.03)%, respectively. 43Cr is thus established as the second case in which the -3p decay occurs. Although the feeding to the proton-bound states in 43V is expected to be negligible, the large branching ratio of (12 4)% for decays without proton emission is found.

  4. Kinetics and Mechanism of the Hydrogenation of CpCr(CO)3•/[CpCr(CO)3]2 Equilibrium to CpCr(CO)3H

    SciTech Connect (OSTI)

    Norton, Jack R.; Spataru, Tudor; Camaioni, Donald M.; Lee, Suh-Jane; Li, Gang; Choi, Jongwook; Franz, James A.

    2014-05-26T23:59:59.000Z

    The kinetics of the hydrogenation of 2 CpCr(CO)3•/[CpCr(CO)3]2 to CpCr(CO)3H has been investigated. The reaction is second-order in Cr and first-order in H2, with a rate constant of 45 M 2s 1 at 25 °C in benzene. DFT calculations rule out an H2 complex as an intermediate, and suggest (a) end-on approach of H2 to one Cr of [CpCr(CO)3]2 as the Cr-Cr bond undergoes heterolytic cleavage, (b) heterolytic cleavage of the coordinated H2 between O and Cr, and (c) isomerization of the resulting O-protonated CpCr(CO)2(COH) to CpCr(CO)3H. The work at Pacific Northwest National Laboratory (PNNL) was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences and Biosciences; Battelle operates PNNL for DOE.

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

    DOE Patents [OSTI]

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

    2001-01-01T23:59:59.000Z

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

  6. Impact of x-ray dose on the response of CR-39 to 1-5.5 MeV alphas

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

    Rojas-Herrera, J.; Rinderknecht, H. G.; Zylstra, A. B.; Gatu Johnson, M.; Orozco, D.; Rosenberg, M. J.; Sio, H.; Seguin, F. H.; Frenje, J. A.; Li, C. K.; et al

    2015-03-01T23:59:59.000Z

    The CR-39 nuclear track detector is used in many nuclear diagnostics #12;fielded at inertial con#12;nement fusion (ICF) facilities. Large x-ray uences generated by ICF experiments may impact the CR-39 response to incident charged particles. To determine the impact of x-ray exposure on the CR-39 response to alpha particles, a thick-target bremsstrahlung x-ray generator was used to expose CR-39 to various doses of 8 keV Cu-K?#11; and K#12;? x-rays. The CR-39 detectors were then exposed to 1-5.5 MeV alphas from an Am-241 source. The regions of the CR-39 exposed to x-rays showed a smaller track diameter than those not exposed tomore »x-rays: for example, a dose of 3.0#6; ± 0.1 Gy causes a decrease of (19 ± #6;2)% in the track diameter of a 5.5 MeV alpha particle, while a dose of 60.0 ± #6;1.3 Gy results in a decrease of (45 ± #6;5)% in the track diameter. The reduced track diameters were found to be predominantly caused by a comparable reduction in the bulk etch rate of the CR-39 with x-ray dose. A residual eff#11;ect depending on alpha particle energy is characterized using an empirical formula.« less

  7. Impact of x-ray dose on the response of CR-39 to 1-5.5 MeV alphas

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

    Rojas-Herrera, J.; Rinderknecht, H. G.; Zylstra, A. B.; Gatu Johnson, M.; Orozco, D.; Rosenberg, M. J.; Sio, H.; Seguin, F. H.; Frenje, J. A.; Li, C. K.; Petrasso, R. D.

    2015-03-01T23:59:59.000Z

    The CR-39 nuclear track detector is used in many nuclear diagnostics #12;fielded at inertial con#12;nement fusion (ICF) facilities. Large x-ray uences generated by ICF experiments may impact the CR-39 response to incident charged particles. To determine the impact of x-ray exposure on the CR-39 response to alpha particles, a thick-target bremsstrahlung x-ray generator was used to expose CR-39 to various doses of 8 keV Cu-K?#11; and K#12;? x-rays. The CR-39 detectors were then exposed to 1-5.5 MeV alphas from an Am-241 source. The regions of the CR-39 exposed to x-rays showed a smaller track diameter than those not exposed to x-rays: for example, a dose of 3.0#6; ± 0.1 Gy causes a decrease of (19 ± #6;2)% in the track diameter of a 5.5 MeV alpha particle, while a dose of 60.0 ± #6;1.3 Gy results in a decrease of (45 ± #6;5)% in the track diameter. The reduced track diameters were found to be predominantly caused by a comparable reduction in the bulk etch rate of the CR-39 with x-ray dose. A residual eff#11;ect depending on alpha particle energy is characterized using an empirical formula.

  8. Summary of important results and SCDAP/RELAP5 analysis for OECD LOFT experiment LP-FP-2

    SciTech Connect (OSTI)

    Coryell, E.W. [EG and G Idaho, Inc., Idaho Falls, ID (United States)

    1994-04-01T23:59:59.000Z

    This report summarizes significant technical findings from the LP-FP-2 Experiment sponsored by the Organization of Economic Cooperation and Development (OECD). It was the second, and final, fission product experiment conducted in the Loss-of-Fluid Test (LOFT) facility at the Idaho National Engineering Laboratory. The overall technical objective of the test was to contribute to the understanding of fuel rod behavior, hydrogen generation, and fission product release, transport, and deposition during a V-sequence accident scenario that resulted in severe core damage. An 11 by 11 test bundle, comprised of 100 prepressurized fuel rods, 11 control rods, and 10 instrumented guide tubes, was surrounded by an insulating shroud and contained in a specially designed central fuel module, that was inserted into the LOFT reactor. The simulated transient was a V-sequence loss-of-coolant accident scenario featuring a pipe break in the low pressure injection system line attached to the hot leg of the LOFT broken loop piping. The transient was terminated by reflood of the reactor vessel when the outer wall shroud temperature reached 1517 K. With sustained fission power and heat from oxidation and metal-water reactions, elevated temperatures resulted in zircaloy melting, fuel liquefaction, material relocation, and the release of hydrogen, aerosols, and fission products. A description and evaluation of the major phenomena, based upon the response of on line instrumentation, analysis of fission product data, postirradiation examination of the fuel bundle, and calculations using the SCDAP/RELAP5 computer code, are presented.

  9. FP-LAPW investigation of electronic, magnetic, elastic and thermal properties of Fe-doped zirconium nitride

    SciTech Connect (OSTI)

    Sirajuddeen, M. Mohamed Sheik, E-mail: msheiksiraj@bsauniv.ac.in; Banu, I. B. Shameem [Department of Physics, B. S. Abdur Rahman University, Chennai-600 048 (India)

    2014-05-15T23:59:59.000Z

    Full Potential- Linear Augmented Plane Wave (FP-LAPW) method has been employed to study the electronic, magnetic, elastic and thermal properties of Fe-doped Zirconium nitride. In this work, Fe-atoms were doped into the super cell of ZrN in doping concentrations of 12.5%, 25% and 37.5% to replace Zr atoms. Electronic properties such as band structure and DOS were plotted and compared for the doped compounds. Charge density contours were plotted for all the doped compounds. The non-magnetic ZrN doped in different Fe concentrations were found to be ferromagnetic. Magnetic moments have been calculated and compared. Elastic properties have been studied and compared with electronic properties. Appearance of magnetic ordering and its influence with the elastic properties have been reported. Impact of 3d states of Fe in DOS plot on the elastic nature of the compounds has been highlighted. Thermal properties such as Debye temperature and molar heat capacities at low temperature have been determined. Debye temperature is found to decrease with higher doping concentrations. Molar heat capacities are found to increase with higher concentrations of Fe atoms.

  10. Magnetic coupling in neutral and charged Cr{sub 2}, Mn{sub 2}, and CrMn dimers

    SciTech Connect (OSTI)

    Desmarais, N. [Institut de Physique Experimentale, Ecole Polytechnique Federale de Lausanne, PHB-Ecublens, CH-1015 Lausanne, (Switzerland)] [Institut de Physique Experimentale, Ecole Polytechnique Federale de Lausanne, PHB-Ecublens, CH-1015 Lausanne, (Switzerland); Reuse, F. A. [Institut de Physique Experimentale, Ecole Polytechnique Federale de Lausanne, PHB-Ecublens, CH-1015 Lausanne, (Switzerland)] [Institut de Physique Experimentale, Ecole Polytechnique Federale de Lausanne, PHB-Ecublens, CH-1015 Lausanne, (Switzerland); Khanna, S. N. [Department of Physics, Virginia Commonwealth University, Richmond, Virginia 23284-2000 (United States)] [Department of Physics, Virginia Commonwealth University, Richmond, Virginia 23284-2000 (United States)

    2000-04-01T23:59:59.000Z

    Theoretical ab initio studies of neutral, cationic and anionic Cr{sub 2}, Mn{sub 2}, and CrMn dimers have been carried out to explore the progression of magnetic coupling with the number of electrons. It is shown that while Cr{sub 2} and Cr{sub 2}{sup -} have antiferromagnetically coupled atomic spins, Cr{sub 2}{sup +} has a ferromagnetic ground state closely followed by an antiferromagnetic state. On the other hand, all Mn{sub 2} dimers are ferromagnetic, irrespective of the charge. The neutral CrMn is ferrimagnetic while the charged CrMn are antiferromagnetic. In all cases, the charged dimers are found to be more stable than the neutral ones. The results are compared with available calculations and experiments and the difficulties associated with theoretical description and the experimental interpretations are discussed. (c) 2000 American Institute of Physics.

  11. EUFAR FP5

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField Campaign:INEA :Work4/11 ENVIROISSUES ESF 12 EventsAN 241.4ESUE

  12. HNF-37489-FP Revision

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItem Not Found Item Not Found The itemAIR57451DOE/SC0002390dVandHEATING

  13. SF 6432-FP ( -94)

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Scienceand Requirements RecentlyElectronicResourcesjobs RunningSEAB ReportsFE (04/2015) SECTION

  14. Accepted Manuscript Comment on "Ccl2, Cx3cr1 and Ccl2/Cx3cr1 chemokine deficiencies are not sufficient

    E-Print Network [OSTI]

    Boyer, Edmond

    Accepted Manuscript Comment on "Ccl2, Cx3cr1 and Ccl2/Cx3cr1 chemokine deficiencies on "Ccl2, Cx3cr1 and Ccl2/Cx3cr1 chemokine deficiencies are not sufficient to cause age- related retinal on "Ccl2, Cx3cr1 and Ccl2/Cx3cr1 chemokine deficiencies are not sufficient to cause age- related retinal

  15. The following 24 credits are required. Course Cr Semester Course Cr Semester

    E-Print Network [OSTI]

    Watson, Craig A.

    Fundamentals of Pest Management 3 Soil and Water Science Minor 15 credits required Course Cr Required SWS SWS3023L Soil Judging 2 SWS4116 Environmental Nutrient Management 3 SWS4223 Environmental Biogeochemistry 3 SWS4231C Soil, Water, and Land Use 3 SWS4244 Wetlands 3 SWS4245 Water Resource Sustainability 3

  16. Using CrAIN Multilayer Coatings to Improve Oxidation Resistance...

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

    Coatings to Improve Oxidation Resistance of Steel Interconnects for Solid Oxide Fuel Cell Stacks. Using CrAIN Multilayer Coatings to Improve Oxidation Resistance of Steel...

  17. Common CX3CR1 alleles are associated with a reduced risk of headaches Short title: CX3CR1 gene polymorphisms and headaches

    E-Print Network [OSTI]

    Boyer, Edmond

    Common CX3CR1 alleles are associated with a reduced risk of headaches Short title: CX3CR1 gene Objectives: The aim of this study was to investigate the role of the chemokine receptor CX3CR1 in headaches and migraine. Methods: Distribution of two polymorphisms of the chemokine receptor CX3CR1 (V249I and T280M

  18. NUREG/CR-6911 Tests of Uranium (VI) Adsorption

    E-Print Network [OSTI]

    NUREG/CR-6911 Tests of Uranium (VI) Adsorption Models in a Field Setting U.S. Geological Survey U/CR-6911 Tests of Uranium (VI) Adsorption Models in a Field Setting Manuscript Completed: August 2006 Date observations clearly demonstrated that in aquifers where U(VI) concentrations are controlled by adsorption

  19. CR Systems Engineering and Design March 2003 COMMUNICATIONS RESOURCES

    E-Print Network [OSTI]

    California at Davis, University of

    CR Systems Engineering and Design March 2003 UCDAVIS COMMUNICATIONS RESOURCES CONFINED SPACE ENTRY to a combustible particulate is defined as a concentration greater than 20 percent of the minimum explosive as the atmospheric concentration immediately hazardous to life or health (IDLH). 1 #12;CR Systems Engineering

  20. Usnesen ze 4. zasedn Vdeck rady AV CR konanho dne 10. z 1. Oven a kontrola zpisu z 3. zasedn

    E-Print Network [OSTI]

    Tebbens, Jurjen Duintjer

    reform terciárního vzdlávání. Vdecká rada AV CR bere se souhlasem na vdomí stanovisko AR AV CR k reform

  1. Isochronicity Correction in the CR Storage Ring

    E-Print Network [OSTI]

    S. Litvinov; D. Toprek; H. Weick; A. Dolinskii

    2013-05-24T23:59:59.000Z

    A challenge for nuclear physics is to measure masses of exotic nuclei up to the limits of nuclear existence which are characterized by low production cross sections and short half-lives. The large acceptance Collector Ring (CR) at FAIR tuned in the isochronous ion-optical mode offers unique possibilities for measuring short-lived and very exotic nuclides. However, in a ring designed for maximal acceptance, many factors limit the resolution. One point is a limit in time resolution inversely proportional to the transverse emittance. But most of the time aberrations can be corrected and others become small for large number of turns. We show the relations of the time correction to the corresponding transverse focusing and that the main correction for large emittance corresponds directly to the chromaticity correction for transverse focusing of the beam. With the help of Monte-Carlo simulations for the full acceptance we demonstrate how to correct the revolution times so that in principle resolutions of dm/m=1E-6 can be achieved. In these calculations the influence of magnet inhomogeneities and extended fringe fields are considered and a calibration scheme also for ions with different mass-to-charge ratio is presented.

  2. NASA/CR2003212153 A Stochastic Collocation Algorithm

    E-Print Network [OSTI]

    Mathelin, Lionel

    NASA Center for AeroSpace Information 7121 Standard Drive Hanover, MD 21076­1320 #12;NASA/CR­2003 Information Service (NTIS) 7121 Standard Drive 5285 Port Royal Road Hanover, MD 21076­1320 Springfield, VA

  3. 9 Cr-- 1 Mo steel material for high temperature application

    DOE Patents [OSTI]

    Jablonski, Paul D; Alman, David; Dogan, Omer; Holcomb, Gordon; Cowen, Christopher

    2012-11-27T23:59:59.000Z

    One or more embodiments relates to a high-temperature, titanium alloyed, 9 Cr-1 Mo steel exhibiting improved creep strength and oxidation resistance at service temperatures up to 650.degree. C. The 9 Cr-1 Mo steel has a tempered martensite microstructure and is comprised of both large (0.5-3 .mu.m) primary titanium carbides and small (5-50 nm) secondary titanium carbides in a ratio of. from about 1:1.5 to about 1.5:1. The 9 Cr-1 Mo steel may be fabricated using exemplary austenizing, rapid cooling, and tempering steps without subsequent hot working requirements. The 9 Cr-1 Mo steel exhibits improvements in total mass gain, yield strength, and time-to-rupture over ASTM P91 and ASTM P92 at the temperature and time conditions examined.

  4. AVTA: 2010 Honda CR-Z Hybrid Downloadable Dynamometer Database...

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

    at Argonne National Laboratory under the funding and guidance of the U.S. Department of Energy (DOE). Honda CR-Z Hybrid (2010) More Documents & Publications AVTA: 2012 Chevrolet...

  5. Phase stability and elastic properties of Cr-V alloys

    SciTech Connect (OSTI)

    Gao, M. C.; Suzuki, Y.; Schweiger, H.; Do?an, Ö.N.; Hawk, J.; Widom M.

    2013-02-20T23:59:59.000Z

    V is the only element in the periodic table that forms a complete solid solution with Cr and thus is particularly important in alloying strategy to ductilize Cr. This study combines first-principles density functional theory calculations and experiments to investigate the phase stability and elastic properties of Cr–V binary alloys. The cluster expansion study reveals the formation of various ordered compounds at low temperatures that were not previously known. These compounds become unstable due to the configurational entropy of bcc solid solution as the temperature is increased. The elastic constants of ordered and disordered compounds are calculated at both T = 0 K and finite temperatures. The overall trends in elastic properties are in agreement with measurements using the resonant ultrasound spectroscopy method. The calculations predict that addition of V to Cr decreases both the bulk modulus and the shear modulus, and enhances the Poisson’s ratio, in agreement with experiments. Decrease in the bulk modulus is correlated to decrease in the valence electron density and increase in the lattice constant. An enhanced Poisson’s ratio for bcc Cr–V alloys (compared to pure Cr) is associated with an increased density of states at the Fermi level. Furthermore, the difference charge density in the bonding region in the (110) slip plane is highest for pure Cr and decreases gradually as V is added. The present calculation also predicts a negative Cauchy pressure for pure Cr, and it becomes positive upon alloying with V. The intrinsic ductilizing effect from V may contribute, at least partially, to the experimentally observed ductilizing phenomenon in the literature.

  6. Roles of Fe2+, Fe3+, and Cr3+ Surface Sites in the Oxidation...

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

    Fe3+, and Cr3+ Surface Sites in the Oxidation of NO on the (Fe,Cr)3O4(1 1 1) Surface Termination of an -(Fe,Cr Roles of Fe2+, Fe3+, and Cr3+ Surface Sites in the Oxidation of NO...

  7. BACHELOR OF ARTS IN GEOLOGY (UNOFFICIAL) CATALOG 129 Fall (Th-Pr) Cr Spring (Th-Pr) Cr

    E-Print Network [OSTI]

    BACHELOR OF ARTS IN GEOLOGY (UNOFFICIAL) CATALOG 129 Fall (Th-Pr) Cr Spring (Th-Pr) Cr Freshman Geology (3-3) 4 GEOL 106 Historical Geology (3-3) 4 MATH 166 Topics in Cont. Math II 1 (3-0) 3 MATH 131-3) 4 GEOP 341 Introduction to Global Geophysics (3-0) 3 GEOL 309 Introduction to Geologic Field Methods

  8. Characterization of the CR-39 neutron track etch dosimeter and evaluation of a combination CR-39/thermoluminescent dosimeter badge

    E-Print Network [OSTI]

    Hoover, Paul Steven

    1989-01-01T23:59:59.000Z

    . . . . . . . Objectives . THEORY 2 5 9 12 14 Charged Particle Interactions and Damage Track Formation Neutron Converters The Etching Process Background Effects The Quality Factor MATERIALS AND METHODS 14 16 18 21 22 31 CR-39 Supply . CR-39... effectiveness and used for calculating the dose equivalent (H) of exposed personnel, do not offer the same margin of safety for all radiations, including neutrons. The result is a proposed increase in applied Q values to assure comparable safety in all...

  9. Laying the groundwork at the AGS: Recent results from experiment E895 M.A. Lisa a , N.N. Ajitanand b , J.M. Alexander b , M.Anderson c , D. Best d , F.P. Brady c ,

    E-Print Network [OSTI]

    Brookhaven National Laboratory

    .N. Ajitanand b , J.M. Alexander b , M.Anderson c , D. Best d , F.P. Brady c , T. Case d , W. Caskey c , D, Pittsburgh, Pennsylvania k St. Mary's College, Moraga, California l University of Auckland, Auckland, New

  10. http://www-cr.scphys.kyoto-u.ac.jp/gakubu/P6.html http://www-cr.scphys.kyoto-u.ac.jp/gakubu/P6.html

    E-Print Network [OSTI]

    2011 P6 http://www-cr.scphys.kyoto-u.ac.jp/gakubu/P6.html web #12;http://www-cr.scphys.kyoto-u.ac.jp/gakubu/P6.html () ( #12;http://www-cr.scphys.kyoto-u.ac.jp/gakubu/P6.html X MeV X Astro-H 2013 TeV10m) #12;http://www-cr.scphys.kyoto-u.ac.jp/gakubu/P6.html 2010 ASTRO-H CCD X (2) () (2) (2

  11. Chromium Isotope Fractionation During Reduction of Cr(VI) Under Saturated Flow Conditions

    SciTech Connect (OSTI)

    Jamieson-Hanes, Julia H.; Gibson, Blair D.; Lindsay, Matthew B.J.; Kim, Yeongkyoo; Ptacek, Carol J.; Blowes, David W. (Waterloo); (Kyungpook National University)

    2012-10-25T23:59:59.000Z

    Chromium isotopes are potentially useful indicators of Cr(VI) reduction reactions in groundwater flow systems; however, the influence of transport on Cr isotope fractionation has not been fully examined. Laboratory batch and column experiments were conducted to evaluate isotopic fractionation of Cr during Cr(VI) reduction under both static and controlled flow conditions. Organic carbon was used to reduce Cr(VI) in simulated groundwater containing 20 mg L{sup -1} Cr(VI) in both batch and column experiments. Isotope measurements were performed on dissolved Cr on samples from the batch experiments, and on effluent and profile samples from the column experiment. Analysis of the residual solid-phase materials by scanning electron microscopy (SEM) and by X-ray absorption near edge structure (XANES) spectroscopy confirmed association of Cr(III) with organic carbon in the column solids. Decreases in dissolved Cr(VI) concentrations were coupled with increases in {delta}{sup 53}Cr, indicating that Cr isotope enrichment occurred during reduction of Cr(VI). The {delta}{sup 53}Cr data from the column experiment was fit by linear regression yielding a fractionation factor ({alpha}) of 0.9979, whereas the batch experiments exhibited Rayleigh-type isotope fractionation ({alpha} = 0.9965). The linear characteristic of the column {delta}{sup 53}Cr data may reflect the contribution of transport on Cr isotope fractionation.

  12. Effect of Cr concentration on resistance switching in Cr-doped SrZrO3 films and surface accumulation of Cr ions

    E-Print Network [OSTI]

    Oh, Se-Jung

    of Physics and Astronomy, CSCMR & FPRD, Seoul National University, Seoul 151-747, South Korea 2 Université the film and the electrode. © 2010 American Institute of Physics. doi:10.1063/1.3499626 Recently, Cr of high-density integration, and high-speed write-erase operations.1­3 However, despite nu- merous

  13. GovCon Holiday Soiree

    Broader source: Energy.gov [DOE]

    The 6th Annual GovCon Holiday Soiree will be held at the Kennedy Center on Monday, December 8, from 5:30pm to 7:30pm. The event is expected to bring together more than 200 representatives of women-...

  14. Quick Chili Con Carne Ingredients

    E-Print Network [OSTI]

    Liskiewicz, Maciej

    Quick Chili Con Carne Ingredients: 16 ounces kidney beans, canned 1 pound ground turkey 1/2 onion 1 tablespoons chili powder 1 teaspoon cumin Directions 1. Open beans and pour into colander. Rinse under running water to remove sodium. Set aside to drain. 2. Heat skillet to medium. Place ground turkey in skillet

  15. Grain boundary depletion and migration during selective oxidation of Cr in a Ni-5Cr binary alloy exposed to high-temperature hydrogenated water

    SciTech Connect (OSTI)

    Schreiber, Daniel K.; Olszta, Matthew J.; Bruemmer, Stephen M.

    2014-10-15T23:59:59.000Z

    High-resolution microscopy of a high-purity Ni-5Cr alloy exposed to 360°C hydrogenated water reveals intergranular selective oxidation of Cr accompanied by local Cr depletion and diffusion-induced grain boundary migration (DIGM). The corrosion-product oxide consists of a porous, interconnected network of Cr2O3 platelets with no further O ingress into the metal ahead. Extensive grain boundary depletion of Cr (to <0.05at.%) is observed typically 20–100 nm wide as a result of DIGM and reaching depths of many micrometers beyond the oxidation front.

  16. Exchange bias in Fe/Cr double superlattices.

    SciTech Connect (OSTI)

    Jiang, J. S.; Felcher, G. P.; Inomata, A.; Goyette, R.; Nelson, C.; Bader, S. D.

    1999-11-30T23:59:59.000Z

    Utilizing the oscillatory interlayer exchange coupling in Fe/Cr superlattices, we have constructed ''double superlattice'' structures where a ferromagnetic (F) and an antiferromagnetic (AF) Fe/Cr superlattice are coupled through a Cr spacer. The minor hysteresis loops in the magnetization are shifted from zero field, i.e., the F superlattice is exchange biased by the AF one. The double superlattices are sputter-deposited with (211) epitaxy and possess uniaxial in-plane magnetic anisotropy. The magnitude of the bias field is satisfactorily described by the classic formula for collinear spin structures. The coherent structure and insensitivity to atomic-scale roughness makes it possible to determine the spin distribution by polarized neutron reflectivity, which confirms that the spin structure is collinear. The magnetic reversal behavior of the double superlattices suggests that a realistic model of exchange bias needs to address the process of nucleating local reverse domains.

  17. Supernova 1996cr: SN 1987A's Wild Cousin?

    E-Print Network [OSTI]

    F. E. Bauer; V. V. Dwarkadas; W. N. Brandt; S. Immler; S. Smartt; N. Bartel; M. F. Bietenholz

    2008-05-06T23:59:59.000Z

    We report on new VLT optical spectroscopic and multi-wavelength archival observations of SN1996cr, a previously identified ULX known as Circinus Galaxy X-2. Our optical spectrum confirms SN1996cr as a bona fide type IIn SN, while archival imaging isolates its explosion date to between 1995-02-28 and 1996-03-16. SN1996cr is one of the closest SNe (~3.8 Mpc) in the last several decades and in terms of flux ranks among the brightest radio and X-ray SNe ever detected. The wealth of optical, X-ray, and radio observations that exist for this source provide relatively detailed constraints on its post-explosion expansion and progenitor history, including an preliminary angular size constaint from VLBI. The archival X-ray and radio data imply that the progenitor of SN1996cr evacuated a large cavity just prior to exploding: the blast wave likely expanded for ~1-2 yrs before eventually striking the dense circumstellar material which surrounds SN1996cr. The X-ray and radio emission, which trace the progenitor mass-loss rate, have respectively risen by a factor of ~2 and remained roughly constant over the past 7 yr. This behavior is reminiscent of the late rise of SN1987A, but 1000 times more luminous and much more rapid to onset. Complex Oxygen line emission in the optical spectrum further hints at a possible concentric shell or ring-like structure. The discovery of SN1996cr suggests that a substantial fraction of the closest SNe observed in the last several decades have occurred in wind-blown bubbles. An Interplanetary Network position allows us to reject a tentative GRB association with BATSE 4B960202. [Abridged

  18. Nitrate Enhanced Microbial Cr(VI) Reduction-Final Report

    SciTech Connect (OSTI)

    John F. Stolz

    2011-06-15T23:59:59.000Z

    A major challenge for the bioremediation of radionuclides (i.e., uranium, technetium) and metals (i.e., Cr(VI), Hg) is the co-occurrence of nitrate as it can inhibit metal transformation. Denitrification (nitrate reduction to dinitrogen gas) is considered the most important ecological process. For many metal and metalloid reducing bacteria, however, ammonia is the end product through respiratory nitrate reduction (RNRA). The focus of this work was to determine how RNRA impacts Cr(VI) transformation. The goal was to elucidate the specific mechanism(s) that limits Cr(VI) reduction in the presence of nitrate and to use this information to develop strategies that enhance Cr(VI) reduction (and thus detoxification). Our central hypothesis is that nitrate impacts the biotransformation of metals and metalloids in three ways 1) as a competitive alternative electron acceptor (inhibiting transformation), 2) as a co-metabolite (i.e., concomitant reduction, stimulating transformation), and 3) as an inducer of specific proteins and pathways involved in oxidation/reduction reactions (stimulating transformation). We have identified three model organisms, Geobacter metallireducens (mechanism 1), Sulfurospirillum barnesii, (mechasism 2), and Desulfovibrio desulfuricans (mechanisms 3). Our specific aims were to 1) investigate the role of Cr(VI) concentration on the kinetics of both growth and reduction of nitrate, nitrite, and Cr(VI) in these three organisms; 2) develop a profile of bacterial enzymes involved in nitrate transformation (e.g., oxidoreductases) using a proteomic approach; 3) investigate the function of periplasmic nitrite reductase (Nrf) as a chromate reductase; and 4) develop a strategy to maximize microbial chromium reduction in the presence of nitrate. We found that growth on nitrate by G. metallireducens was inhibited by Cr(VI). Over 240 proteins were identified by LC/MS-MS. Redox active proteins, outer membrane heavy metal efflux proteins, and chemotaxis sensory proteins (Gmet_2478 and Gmet_1641) were up-regulated with exposure to Cr(VI). A nine-heme cytochrome C was purified that could reduce nitrite and could be oxidized by Cr(VI). For D. desulfuricans, we found that confirmed that Cr(VI) induced a prolonged lag period when Cr(VI) was reduced. Over three hundred proteins were unequivocally identified by LC/MS-MS and a significant number of down-regulated proteins for which the levels were changed >2 fold compared to control. Sulfite reductase levels were similar, however, nitrate and nitrite reductase were down-regulated. The supernatant of spent cultures was found to contain a filterable, heat stable compound that rapidly reduced Cr(VI). In addition, desulfoviridin was purified from nitrate grown cells and shown to have nitrite reductase activity that was inhibited by Cr(VI). For S. barnesii, periplasmic nitrate reductase (Nap), nitrite reductase (Nrf), and the metalloid reductase (Rar) were purified and characterized. The supernatant of spent cultures was also found to contain a filterable, heat stable compound that rapidly reduced Cr(VI) but that Rar also reduced Cr(VI). Our results from specific aims 1 through 3 indicate that for G. metallireducens, Cr(VI) inhibits nitrate respiration as it oxidizes cytochromes involved in nitrate respiration. Iron reduction is apparently not affected and the inhibitory affects of Cr(VI) may be attenuated by the addition of sufficient Fe(III) to generate Fe(II) that abiotically reduces the chromium. For S. barnesii, although the enzyme assays indicate that the components of the respiratory pathway for nitrate (e.g. Nap and Nrf) are inhibited by chromate, the organism has a mechanism to prevent this from actually occurring. Our current hypothesis is that the non-specific metalloid reductase (Rar) is providing resistance by reducing the Cr(VI). The strategy here would be to enhance its growth and metabolism in the natural setting. Lactate is a suitable electron donor for S. barnesii but other donors are possible. Although the version of the Phylochip used for monitoring the microb

  19. Math 5654 4cr Spring 2010 Prediction and Filtering

    E-Print Network [OSTI]

    Krylov, Nicolai

    Math 5654 4cr Spring 2010 Syllabus Prediction and Filtering Lectures: 10:10am-12:05pm TTh, VinH 364: Saturday, May 15, 4 pm-6 pm. A few homeworks wil be assigned and the grades for them will enter as 2-dimensional case 133 2:2. Multidimensional case 137 3. Linear filtering 147 Chapter 6. Wiener process

  20. CR Mission BREST 05 09 juin 2000 ATELIER DE CALIBRATION

    E-Print Network [OSTI]

    Guillard, Jean

    CR Mission BREST 05 ­ 09 juin 2000 ATELIER DE CALIBRATION Jean GUILLARD Dans la semaine du 05 au 09 juin 2000, un atelier de calibration a été organisé par l'IRD (U.S. « Hydroacoustique appliquée à l'IFREMER. La calibration des sondeurs est difficile à réaliser dans le milieu naturel, lors des

  1. Giri Narasimhan CAP 5510: Introduction to Bioinformatics (3 cr)

    E-Print Network [OSTI]

    Narasimhan, Giri

    , and the Internet · Overview of Bioinformatics, Computational Biology and Biotechnology · (*) Databases and Software Bioinformatics Computer Skills, Gibas & Jambeck, O'Reilly Publishers. · Algorithm on Strings, TreesGiri Narasimhan CAP 5510: Introduction to Bioinformatics (3 cr) Spring 2006: Tu Thu 11-12:15 in ECS

  2. Giri Narasimhan CAP 5510: Introduction to Bioinformatics (3 cr)

    E-Print Network [OSTI]

    Narasimhan, Giri

    , and the Internet · Overview of Bioinformatics, Computational Biology and Biotechnology · (*) Databases and Software] · Developing Bioinformatics Computer Skills, Gibas & Jambeck, O'Reilly Publishers. · Algorithm on StringsGiri Narasimhan CAP 5510: Introduction to Bioinformatics (3 cr) Spring 2007: Tu Thu 11-12:15 in ECS

  3. Reversible nano-structuring of SrCrO3-? through oxidization...

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

    nano-structuring of SrCrO3- through oxidization and reduction at low temperatures. Reversible nano-structuring of SrCrO3- through oxidization and reduction at low temperatures....

  4. Thermal stability and oxidation resistance of TiCrAlYO coatings...

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

    stability and oxidation resistance of TiCrAlYO coatings on SS430 for solid oxide fuel cell interconnect applications. Thermal stability and oxidation resistance of TiCrAlYO...

  5. Excited Carrier Dynamics of ?-Cr2O3/?-Fe2O3 Core...

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

    Excited Carrier Dynamics of ?-Cr2O3?-Fe2O3 Core-Shell Nanostructures. Excited Carrier Dynamics of ?-Cr2O3?-Fe2O3 Core-Shell Nanostructures. Abstract: In...

  6. Epitaxial Cr on n-SrTiO3(001)—An ideal Ohmic contact ....

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

    beam epitaxy are shown to result in an ordered interface with Cr bound to O in the terminal TiO2 layer, no reduction of the SrTiO3, and a near-perfect Ohmic contact. Cr...

  7. Surface structure of ?-Cr2O3(0001) after activated oxygen...

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

    Surface structure of ?-Cr2O3(0001) after activated oxygen exposure. Surface structure of ?-Cr2O3(0001) after activated oxygen exposure. Abstract: The surface structure...

  8. Growth of Cr-doped TiO Films in the Rutile and Anatase Structures...

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

    of Cr-doped TiO Films in the Rutile and Anatase Structures by Oxygen Plasma Assisted Molecular Beam Epitaxy . Growth of Cr-doped TiO Films in the Rutile and Anatase Structures by...

  9. Synthesis of Room-Temperature Ferromagnetic Cr-doped TiO(110...

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

    Room-Temperature Ferromagnetic Cr-doped TiO(110) Rutile Single Crystals using Ion Implantation. Synthesis of Room-Temperature Ferromagnetic Cr-doped TiO(110) Rutile Single Crystals...

  10. Reduction of Health Risks Due to Chromium(VI)Using Mesquite: A Potential Cr Phytoremediator

    SciTech Connect (OSTI)

    Gardea-Torresdey, Jorge L.; Aldrich, Mary V.; Peralta-Videa, Jose R.; Parsons, Jason G.

    2004-03-29T23:59:59.000Z

    Chromium is a transition metal extensively used in industry. Cr mining and industrial operations account for chromium wastes at Superfund sites in the United States. A study was performed to investigate the possibility of using mesquite (Prosopis spp.), which is an indigenous desert plant species, to remove Cr from contaminated sites. In this study, mesquite plants were grown in an agar-based medium containing 75 mg L-1 and 125 mg L-1 of Cr(VI). The Cr content of leaf tissue (992 mg kg-1 of dry weight, from 125 mg L-1 of Cr(VI)) indicated that mesquite could be classified as a chromium hyperaccumulator. X-ray absorption spectroscopy (XAS) studies performed to experimental samples showed that mesquite roots absorbed some of the supplied Cr(VI). However, the data analyses of plant tissues demonstrated that the absorbed Cr(VI) was fully reduced to Cr(III) in the leaf tissue.

  11. Local-Orbital Ordering on Cr{sup 3+} Ions Doped in GaN

    SciTech Connect (OSTI)

    Emura, S.; Kimura, S.; Tokuda, K.; Zhou, Yi-Kai; Hasegawa, S.; Asahi, H. [The Institute of Scientific and Industrial research, Osaka University, Mihogaoka 8-1, Ibaraki, Osaka 567-0047 (Japan)

    2010-01-04T23:59:59.000Z

    The X-ray linear dichroism (XLD) at the pre-peaks of Cr K-edge, which corresponds to the transition from 1s to 3d orbital, is explicitly observed for cubic GaCrN and hexagonal GaCrN. This observation of XLD in the cubic structure of GaCrN indicates that CrN{sub 4} tetrahedron in the local coordination suffers inhomogeneous or anisotropic deformation. This deformation is also confirmed through the analysis of the X-ray absorption fine structure of Cr K-edge of the hexagonal GaCrN, indicating the shift of Cr{sup +3} ion along the <111> direction.

  12. CSC444-2001-CR-01A Page 1 14 November, 2001 Change Request #001

    E-Print Network [OSTI]

    Easterbrook, Steve

    CSC444-2001-CR-01A Page 1 14 November, 2001 Change Request #001 for the CSC444 Graph Editor Document # CSC444-2001-CR-01A Revision A 14th November 2001 #12;CSC444-2001-CR-01A Page 2 14 November, 2001 ...................................................................................................... 5 #12;CSC444-2001-CR-01A Page 3 14 November, 2001 1 Scope This change request refers to the Graph

  13. Lightest Isotope of Bh Produced Via the 209Bi(52Cr,n)260Bh Reaction

    E-Print Network [OSTI]

    2007-01-01T23:59:59.000Z

    models. For many years, “cold fusion” reactions utilizingproduced via the new “cold fusion” reaction 209 Bi( 52 Cr,

  14. G. J. Snyder Page 1 of 6 THERMOELECTRIC PROPERTIES OF CR3S4-TYPE SELENIDES

    E-Print Network [OSTI]

    extremely low thermal conductivity [2, 3]. For instance, the magnetic semiconductor FeCr2Se4 has been

  15. Expression of CX3CR1 chemokine receptors on neurons and their role in neuronal survival

    E-Print Network [OSTI]

    Meucci, Olimpia

    Expression of CX3CR1 chemokine receptors on neurons and their role in neuronal survival Olimpia expression of CX3CR1, the only known receptor for fractalkine, has been demonstrated exclusively on microglia, that hippocampal neurons also express CX3CR1. Receptor activation by soluble fractalkine induces activation

  16. austenitnoj cr-mn stali: Topics by E-print Network

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

    cr-mn stali First Page Previous Page 1 2 3 4 5 6 Next Page Last Page Topic Index 1 Cavitation erosion of laser processed Fe-Cr-Mn and Fe-Cr-Co alloys CiteSeer Summary: Received...

  17. CVP EDR CrIS Barnet Public Release September 2009.doc NATIONAL POLAR-ORBITTING OPERATIONAL

    E-Print Network [OSTI]

    CVP EDR CrIS Barnet Public Release September 2009.doc NATIONAL POLAR-ORBITTING OPERATIONAL Project CrIS/ATMS EDRs DATE: 15 September No. I30004 VER. 1 REV. B PREPARED BY) Page 1 of 75 #12;CVP EDR CrIS Barnet Public Release September 2009.doc Table of Contents TABLE

  18. Non-classical nuclei and growth kinetics of Cr precipitates in FeCr alloys during ageing

    SciTech Connect (OSTI)

    Li, Yulan; Hu, Shenyang Y.; Zhang, Lei; Sun, Xin

    2014-01-10T23:59:59.000Z

    In this manuscript, we quantitatively calculated the thermodynamic properties of critical nuclei of Cr precipitates in FeCr alloys. The concentration profiles of the critical nuclei and nucleation energy barriers were predicted by the constrained shrinking dimer dynamics (CSDD) method. It is found that Cr concentration distribution in the critical nuclei strongly depend on the overall Cr concentration as well as temperature. The critical nuclei are non-classical because the concentration in the nuclei is smaller than the thermodynamic equilibrium value. These results are in agreement with atomic probe observation. The growth kinetics of both classical and non-classical nuclei was investigated by the phase field approach. The simulations of critical nucleus evolution showed a number of interesting phenomena: 1) a critical classical nucleus first shrinks toward its non-classical nucleus and then grows; 2) a non-classical nucleus has much slower growth kinetics at its earlier growth stage compared to the diffusion-controlled growth kinetics. 3) a critical classical nucleus grows faster at the earlier growth stage than the non-classical nucleus. All of these results demonstrate that it is critical to introduce the correct critical nuclei in order to correctly capture the kinetics of precipitation.

  19. Radiation effects on interface reactions of U/Fe, U/(Fe + Cr), and U/(Fe + Cr + Ni)

    SciTech Connect (OSTI)

    KUn Shao; Di Chen; Chaochen Wei; Michael S. Martin; Xuemei Wang; Youngjoo Park; Ed Dein; Kevin R. Coffey; b , Yongho Sohn; Bulent H. Sencer; J. Rory Kennedy

    2014-09-01T23:59:59.000Z

    We study the effects of radiation damage on interdiffusion and intermetallic phase formation at the interfaces of U/Fe, U/(Fe + Cr), and U/(Fe + Cr + Ni) diffusion couples. Magnetron sputtering is used to deposit thin films of Fe, Fe + Cr, or Fe + Cr + Ni on U substrates to form the diffusion couples. One set of samples are thermally annealed under high vacuum at 450 C or 550 C for one hour. A second set of samples are annealed identically but with concurrent 3.5 MeV Fe++ ion irradiation. The Fe++ ion penetration depth is sufficient to reach the original interfaces. Rutherford backscattering spectrometry analysis with high fidelity spectral simulations is used to obtain interdiffusion profiles, which are used to examine differences in U diffusion and intermetallic phase formation at the buried interfaces. For all three diffusion systems, Fe++ ion irradiations enhance U diffusion. Furthermore, the irradiations accelerate the formation of intermetallic phases. In U/Fe couples, for example, the unirradiated samples show typical interdiffusion governed by Fick’s laws, while the irradiated ones show step-like profiles influenced by Gibbs phase rules.

  20. Con Edison Energy Storage Activities

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade Year-0E (2001)gasoline prices4Consumption TheX I A OCompanyCon Edison

  1. DIVERSAS MANERAS DE GENERAR ENERGIA CON

    E-Print Network [OSTI]

    Gilbes, Fernando

    PLANETA #12;HIDROELECTRICIDAD Es una fuente de energia renovable con la cual se genera electricidad fuentes renovables (estimado del 2005). #12;MODOS DE GENERAR ENERGIA CON AGUA 1. RUEDAS DE AGUA-usadas porDIVERSAS MANERAS DE GENERAR ENERGIA CON AGUA EN EL PLANETA Fernando Gilbes Santaella Departamento

  2. todasuvida: Las personas con diabetes son ms

    E-Print Network [OSTI]

    diabetes Controlesu todasuvida: Las personas con diabetes son más propensas a padecer de enfermedades del corazón que quienes no tienen diabetes. Boletín 631 D Las personas con diabetes tienen mayor- res relacionados con la diabetes, como derrame cerebral, mala circulación en las piernas y pies e

  3. Surface half-metallicity of CrS thin films and perfect spin filtering and spin diode effects of CrS/ZnSe heterostructure

    SciTech Connect (OSTI)

    Gao, G. Y., E-mail: guoying-gao@mail.hust.edu.cn; Yao, K. L., E-mail: klyao@mail.hust.edu.cn [School of Physics and Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, Wuhan 430074 (China)

    2014-11-03T23:59:59.000Z

    Recently, ferromagnetic zinc-blende Mn{sub 1?x}Cr{sub x}S thin films (above x?=?0.5) were fabricated experimentally on ZnSe substrate, which confirmed the previous theoretical prediction of half-metallic ferromagnetism in zinc-blende CrS. Here, we theoretically reveal that both Cr- and S-terminated (001) surfaces of the CrS thin films retain the half-metallicity. The CrS/ZnSe(001) heterogeneous junction exhibits excellent spin filtering and spin diode effects, which are explained by the calculated band structure and transmission spectra. The perfect spin transport properties indicate the potential applications of half-metallic CrS in spintronic devices. All computational results are obtained by using the density functional theory combined with nonequilibrium Green's function.

  4. Grain boundary migration induced segregation in V-Cr-Ti alloys

    SciTech Connect (OSTI)

    Gelles, D.S. [Pacific Northwest National Lab., Richland, WA (United States); Ohnuki, S.; Takahashi, H. [Univ. of Hokkaido (Japan)

    1996-10-01T23:59:59.000Z

    Analytical electron microscopy results are reported for a series of vanadium alloys irradiated in the HFIR JP23 experiment at 500{degrees}C. Alloys were V-5Cr-5Ti and pure vanadium which are expected to have transmuted to V-15Cr-5Ti and V-10Cr following irradiation. Analytical microscopy confirmed the expected transmutation occurred and showed redistribution of Cr and Ti resulting from grain boundary migration in V-5Cr-5Ti, but in pure V, segregation was reduced and no clear trends as a function of position near a boundary were identified.

  5. Partially filled intermediate band of Cr-doped GaN films

    SciTech Connect (OSTI)

    Sonoda, S. [Department of Electronics, Kyoto Institute of Technology, Kyoto 606-8585 (Japan)

    2012-05-14T23:59:59.000Z

    We investigated the band structure of sputtered Cr-doped GaN (GaCrN) films using optical absorption, photoelectron yield spectroscopy, and charge transport measurements. It was found that an additional energy band is formed in the intrinsic band gap of GaN upon Cr doping, and that charge carriers in the material move in the inserted band. Prototype solar cells showed enhanced short circuit current and open circuit voltage in the n-GaN/GaCrN/p-GaN structure compared to the GaCrN/p-GaN structure, which validates the proposed concept of an intermediate-band solar cell.

  6. WHC-SA-1619-FP

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItem Not Found Item Not Found The item youThe

  7. Ts&Cs FP

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del SolStrengthening a solidSynthesisAppliancesTrending:Schedule FYHousehold

  8. Ts&Cs FP

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del SolStrengthening a solidSynthesisAppliancesTrending:Schedule FYHousehold0-09)

  9. Ts&Cs FP

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del SolStrengthening a solidSynthesisAppliancesTrending:Schedule

  10. Improving thermostability of CrO{sub 2} thin films by doping with Sn

    SciTech Connect (OSTI)

    Ding, Yi; Wang, Ziyu; Liu, Shuo; Shi, Jing; Yin, Di, E-mail: dyin@whu.edu.cn [Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072 (China); Yuan, Cheng; Lu, Zhihong, E-mail: zludavid@live.com [School of Materials and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081 (China); Xiong, Rui, E-mail: xiongrui@whu.edu.cn [Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072 (China); Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Wuhan 430062 (China)

    2014-09-01T23:59:59.000Z

    Chromium dioxide (CrO{sub 2}) is an ideal material for spin electronic devices since it has almost 100% spin polarization near Fermi level. However, it is thermally unstable and easily decomposes to Cr{sub 2}O{sub 3} even at room temperature. In this study, we try to improve the thermal stability of CrO{sub 2} thin films by doping with Sn whose oxide has the same structure as CrO{sub 2}. High quality epitaxial CrO{sub 2} and Sn-doped CrO{sub 2} films were grown on single crystalline TiO{sub 2} (100) substrates by chemical vapor deposition. Sn{sup 4+} ions were believed to be doped into CrO{sub 2} lattice and take the lattice positions of Cr{sup 4+}. The magnetic measurements show that Sn-doping leads to a decrease of magnetocrystalline anisotropy. The thermal stabilities of the films were evaluated by annealing the films at different temperatures. Sn-doped films can withstand a temperature up to 510?°C, significantly higher than what undoped films can do (lower than 435?°C), which suggests that Sn-doping indeed enhances the thermal stability of CrO{sub 2} films. Our study also indicates that Sn-doping may not change the essential half metallic properties of CrO{sub 2}. Therefore, Sn-doped CrO{sub 2} is expected to be very promising for applications in spintronic devices.

  11. Cr{sub 2}Nb-based alloy development

    SciTech Connect (OSTI)

    Liu, C.T.; Horton, J.A.; Carmichael, C.A.

    1996-05-01T23:59:59.000Z

    This paper summarizes recent progress in developing Cr{sub 2}Nb/Cr(Nb) alloys for structural use in advanced fossil energy conversion systems. Alloy additions were added to control the microstructure and mechanical properties. Two beneficial elements have been identified among all alloying additions added to the alloys. One element is effective in refining the coarse eutectic structure and thus substantially improves the compressive strength and ductility of the alloys. The other element enhances oxidation resistance without sacrificing the ductility. The tensile properties are sensitive to cast defects, which can not be effectively reduced by HIPping at 1450-1580{degrees}C and/or directionally solidifying via a floating zone remelting method.

  12. NEGLIGIBLE CREEP CONDITIONS FOR MOD 9 CR 1 MO STEEL

    SciTech Connect (OSTI)

    Ren, Weiju [ORNL; Riou, Bernard [AREVA Group; Escaravage, Claude [AREVA Group; Swindeman, Robert W [ORNL; Cabrillat, Marie-Th?r?se [CEA Cadarache, St. Paul lex Durance, France; Allais, Lucien [CEA, Saclay, France

    2006-01-01T23:59:59.000Z

    Mod 9 Cr 1 Mo Steel (grade 91) is one of the materials envisaged for the Reactor Pressure Vessel of Very High Temperature Reactors. To avoid the implementation of a surveillance program covering the monitoring of the creep damage throughout the whole life of the reactor, it is recommended to operate the Reactor Pressure Vessel in the negligible creep regime. In this paper, the background of negligible creep criteria available in nuclear Codes is first recalled and their limitations were analyzed. Then, guidance for deriving criteria more appropriate for mod 9 Cr 1 Mo steel is provided. Finally, R&D actions in the U. S. and France to support the new approaches are discussed and recommended.

  13. Gestion d'un cache Loris Marchal CR08 ordonnancement

    E-Print Network [OSTI]

    Marchal, Loris

    Gestion d'un cache Loris Marchal ­ CR08 ordonnancement 30 novembre 2011 1 Introduction On s'int´eresse au probl`eme de la gestion d'une m´emoire temporaire, couramment ap- pel´ee cache. Plut^ot qu´etitivit´e On consid`ere le cas offline, c'est-`a-dire qu'on conna^it `a l'avance toute la s´equence des requ

  14. Gestion d'un cache Loris Marchal CR07 ordonnancement

    E-Print Network [OSTI]

    Marchal, Loris

    Gestion d'un cache Loris Marchal ­ CR07 ordonnancement 17 d´ecembre 2012 1 Introduction On s'int´eresse au probl`eme de la gestion d'une m´emoire temporaire, couramment ap- pel´ee cache. Plut^ot qu´etitivit´e On consid`ere le cas offline, c'est-`a-dire qu'on conna^it `a l'avance toute la s´equence des requ

  15. Long-term corrosion of Cr-Mo steels in superheated steam at 482 and 538/sup 0/C. [21/4 Cr-1 Mo; 9 Cr-1 Mo; Sumitomo 9 Cr-2 Mo; Sandvik HT-9

    SciTech Connect (OSTI)

    Griess, J.C.; DeVan, J.H.; Maxwell, W.A.

    1980-01-01T23:59:59.000Z

    The corrosion of several Cr-Mo ferritic steels was investigated in superheated steam at an operating power plant. Tests were conducted at 482 and 538/sup 0/C (900 and 1000/sup 0/F) in a once-through loop for times up to 28,000 h. Chromium concentrations ranged from 2.0 to 11.3%, and the effect of surface preparation on corrosion was investigated. Only one of many specimens showed evidence of exfoliation at 482/sup 0/C, but at 538/sup 0/C exfoliation occurred on at least some of the specimens of most materials; the exceptions were the alloy with the highest chromium content (Sandvik HT-9), one heat of 9 Cr-1 Mo steel with the highest silicon content, and Sumitomo 9 Cr-2 Mo steel, which was in test for only 19,000 h. Parabolic oxidation kinetics adequately described the corrosion process for about the first year, after which corrosion rates were constant and lower than predicted from extrapolation of the initial part of the penetration versus time curves. With chromium concentrations between 2 and 9%, corrosion behavior was independent of chromium content, and corrosion was only slightly less with Sandvik HT-9. Corrosion was nearly independent of surface preparation, but in two cases the presence of mill scale on the surface prior to steam exposure seemed to retard oxidation in steam. 11 figures, 5 tables.

  16. Low-cost, highly efficient, and tunable ultrafast laser technology based on directly diode-pumped Cr:Colquiriites

    E-Print Network [OSTI]

    Demirbas, Umit

    2010-01-01T23:59:59.000Z

    This doctoral project aims to develop robust, ultra low-cost ($5,000-20,000), highly-efficient, and tunable femtosecond laser technology based on diode-pumped Cr:Colquiriite gain media (Cr:LiCAF, Cr3+:LiSAF and Cr:LiSGaF). ...

  17. Role of Embedded Clustering in Dilute Magnetic Semiconductors: Cr Doped GaN X. Y. Cui,1

    E-Print Network [OSTI]

    Medvedeva, Julia E.

    Role of Embedded Clustering in Dilute Magnetic Semiconductors: Cr Doped GaN X. Y. Cui,1 J. E provide direct evidence that Cr atoms in Cr:GaN have a strong tendency to form embedded clusters, to date, the ma- jority of first-principles investigations into DMS--and Cr:GaN, Mn:GaN, and Mn

  18. Effect of Processing and Microalloying Elements on the Thermal Stability of Cr-Cr3Si and NiAl-Mo Eutectic Alloys

    SciTech Connect (OSTI)

    Gali, Aravind [ORNL; Bei, Hongbin [ORNL; George, Easo P [ORNL

    2007-01-01T23:59:59.000Z

    The thermal stability of multiphase intermetallics at temperatures to 1400 C was investigated by studying two model eutectic systems: Cr-Cr{sub 3}Si having a lamellar microstructure and NiAl-Mo having a fibrous microstructure. In drop cast Cr-Cr{sub 3}Si, coarsening was found to be interface controlled. The coarsening rate could be reduced by microalloying with Ce and Re, two elements which were chosen because they were expected to segregate to the Cr-Cr{sub 3}Si interfaces and decrease their energies. Similarly, directional solidification, which is also expected to lower the Cr-Cr{sub 3}Si interfacial energy, was found to dramatically decrease the coarsening rate. In the case of NiAl-Mo, coarsening was found to occur by fault migration and annihilation. Microalloying with B was found to significantly decrease the coarsening rate. The fiber density in the B-doped alloy was smaller than in the undoped alloy, suggesting that B affects the coarsening rate by lowering the fault density.

  19. r XXXX American Chemical Society A dx.doi.org/10.1021/cr100290v |Chem. Rev. XXXX, XXX, 000000 pubs.acs.org/CR

    E-Print Network [OSTI]

    r XXXX American Chemical Society A dx.doi.org/10.1021/cr100290v |Chem. Rev. XXXX, XXX, 000 emission regulations Received: September 1, 2010 #12;B dx.doi.org/10.1021/cr100290v |Chem. Rev. XXXX, XXX

  20. The electronic bands of CrD, CrH, MgD and MgH: application to the "deuterium test"

    E-Print Network [OSTI]

    Ya. V. Pavlenko; G. J. Harris; J. Tennyson; H. R. A. Jones; J. M. Brown; C. Hill; L. A. Yakovina

    2007-10-11T23:59:59.000Z

    We compute opacities for the electronic molecular band systems A 6Sigma+ -- X 6Sigma+ of CrH and CrD, and A 2Pi -- X 2Sigma+ of MgH and MgD. The opacities are computed by making use of existing spectroscopic constants for MgH and CrH. These constants are adjusted for the different reduced masses of MgD and CrD. Frank-Condon factors are used to provide intensities for the individual vibronic bands. These results are used in the computation of synthetic spectra between Tef = 1800 and 1200 K with an emphasis on the realisation of ``deuterium test'', first proposed by Bejar et al. (1999) to distinguish brown dwarfs from planetary mass objects. We discuss the possible use of CrD and MgD electronic bands for the "deuterium test". We find CrD to be the more promising of the two deuterides, potentially, the most useful bands of CrH/CrD are the Delta v = +1 and Delta v = -1 at 0.795 and 0.968 micron.

  1. The electronic bands of CrD, CrH, MgD and MgH: application to the "deuterium test"

    E-Print Network [OSTI]

    Pavlenko, Ya V; Tennyson, J; Jones, H R A; Brown, J M; Hill, C; Yakovina, L A

    2007-01-01T23:59:59.000Z

    We compute opacities for the electronic molecular band systems A 6Sigma+ -- X 6Sigma+ of CrH and CrD, and A 2Pi -- X 2Sigma+ of MgH and MgD. The opacities are computed by making use of existing spectroscopic constants for MgH and CrH. These constants are adjusted for the different reduced masses of MgD and CrD. Frank-Condon factors are used to provide intensities for the individual vibronic bands. These results are used in the computation of synthetic spectra between Tef = 1800 and 1200 K with an emphasis on the realisation of ``deuterium test'', first proposed by Bejar et al. (1999) to distinguish brown dwarfs from planetary mass objects. We discuss the possible use of CrD and MgD electronic bands for the "deuterium test". We find CrD to be the more promising of the two deuterides, potentially, the most useful bands of CrH/CrD are the Delta v = +1 and Delta v = -1 at 0.795 and 0.968 micron.

  2. Microstructural analyses of Cr(VI) speciation in chromite ore processing Residue (COPR)

    SciTech Connect (OSTI)

    CHRYSOCHOOU, MARIA; FAKRA, SIRINE C .; Marcus, Matthew A.; Moon, Deok Hyun; Dermatas, Dimitris

    2010-03-01T23:59:59.000Z

    The speciation and distribution of Cr(VI) in the solid phase was investigated for two types of chromite ore processing residue (COPR) found at two deposition sites in the United States: gray-black (GB) granular and hard brown (HB) cemented COPR. COPR chemistry and mineralogy were investigated using micro-X-ray absorption spectroscopy and micro-X-ray diffraction, complemented by laboratory analyses. GB COPR contained 30percent of its total Cr(VI) (6000 mg/kg) as large crystals(>20 ?m diameter) of a previously unreported Na-rich analog of calcium aluminum chromate hydrates. These Cr(VI)-rich phases are thought to be vulnerable to reductive and pH treatments. More than 50percent of the Cr(VI) was located within nodules, not easily accessible to dissolved reductants, and bound to Fe-rich hydrogarnet, hydrotalcite, and possibly brucite. These phases are stable over a large pH range, thus harder to dissolve. Brownmilleritewasalso likely associated with physical entrapment of Cr(VI) in the interior of nodules. HB COPR contained no Cr(VI)-rich phases; all Cr(VI) was diffuse within the nodules and absent from the cementing matrix, with hydrogarnet and hydrotalcite being the main Cr(VI) binding phases. Treatment ofHBCOPRis challenging in terms of dissolving the acidity-resistant, inaccessible Cr(VI) compounds; the same applies to ~;;50percent of Cr(VI) in GB COPR.

  3. The response of CR-39 nuclear track detector to 1–9 MeV protons

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

    Sinenian, N.; Rosenberg, M. J.; Manuel, M.; McDuffee, S. C.; Casey, D. T.; Zylstra, A. B.; Rinderknecht, H. G.; Gatu Johnson, M.; Séguin, F. H.; Frenje, J. A.; et al

    2011-10-28T23:59:59.000Z

    The response of CR-39 nuclear track detector (TasTrak®) to protons in the energy range of 0.92–9.28 MeV has been studied. Previous studies of the CR-39 response to protons have been extended by examining the piece-to-piece variability in addition to the effects of etch time and etchant temperature; it is shown that the shape of the CR-39 response curve to protons can vary from piece-to-piece. Effects due to the age of CR-39 have also been studied using 5.5 MeV alpha particles over a 5-year period. Track diameters were found to degrade with the age of the CR-39 itself rather than themore »age of the tracks, consistent with previous studies utilizing different CR-39 over shorter time periods.« less

  4. The response of CR-39 nuclear track detector to 1–9 MeV protons

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

    Sinenian, N.; Rosenberg, M. J.; Manuel, M.; McDuffee, S. C.; Casey, D. T.; Zylstra, A. B.; Rinderknecht, H. G.; Gatu Johnson, M.; Séguin, F. H.; Frenje, J. A.; Li, C. K.; Petrasso, R. D.

    2011-10-28T23:59:59.000Z

    The response of CR-39 nuclear track detector (TasTrak®) to protons in the energy range of 0.92–9.28 MeV has been studied. Previous studies of the CR-39 response to protons have been extended by examining the piece-to-piece variability in addition to the effects of etch time and etchant temperature; it is shown that the shape of the CR-39 response curve to protons can vary from piece-to-piece. Effects due to the age of CR-39 have also been studied using 5.5 MeV alpha particles over a 5-year period. Track diameters were found to degrade with the age of the CR-39 itself rather than the age of the tracks, consistent with previous studies utilizing different CR-39 over shorter time periods.

  5. Crteres en la Luna Problema 1 -Con una regla milimtrica, cul es la escala de esta imagen en kilmetros por

    E-Print Network [OSTI]

    Christian, Eric

    2 T T Cráteres en la Luna Problema 1 - Con una regla milimétrica, ¿cuál es la escala de esta imagen en kilómetros por milímetro si la anchura de esta imagen es de 183 kilómetros? Problema 2 - ¿Cuál es Alfonso? Problema 5 - ¿Dónde crees que el lugar más seguro sería la de la tierra en esta imagen? En 1965

  6. Improved oxidation sulfidation resistance of Fe-Cr-Ni alloys

    DOE Patents [OSTI]

    Natesan, K.; Baxter, D.J.

    1983-07-26T23:59:59.000Z

    High temperature resistance of Fe-Cr-Ni alloy compositions to oxidative and/or sulfidative conditions is provided by the incorporation of about 1 to 8 wt % of Zr or Nb and results in a two-phase composition having an alloy matrix as the first phase and a fine grained intermetallic composition as the second phase. The presence and location of the intermetallic composition between grains of the matrix provides mechanical strength, enhanced surface scale adhesion, and resistance to corrosive attack between grains of the alloy matrix at temperatures of 500 to 1000/sup 0/C.

  7. Oxidation sulfidation resistance of Fe-Cr-Ni alloys

    DOE Patents [OSTI]

    Natesan, Ken (Naperville, IL); Baxter, David J. (Woodridge, IL)

    1984-01-01T23:59:59.000Z

    High temperature resistance of Fe-Cr-Ni alloy compositions to oxidative and/or sulfidative conditions is provided by the incorporation of about 1-8 wt. % of Zr or Nb and results in a two-phase composition having an alloy matrix as the first phase and a fine grained intermetallic composition as the second phase. The presence and location of the intermetallic composition between grains of the matrix provides mechanical strength, enhanced surface scale adhesion, and resistance to corrosive attack between grains of the alloy matrix at temperatures of 500.degree.-1000.degree. C.

  8. SF6432-CR (02-01-13) Cost Reimbursement

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Scienceand Requirements RecentlyElectronicResourcesjobs RunningSEABRV 148002/01/12CR xx-xxxx)

  9. SF6432-CR (02-01-13) Cost Reimbursement

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Scienceand Requirements RecentlyElectronicResourcesjobs RunningSEABRV 148002/01/12CR

  10. Bulk and track etch properties of CR-39 SSNTD etched in NaOH/ethanol

    E-Print Network [OSTI]

    Yu, K.N.

    Bulk and track etch properties of CR-39 SSNTD etched in NaOH/ethanol K.F. Chan, F.M.F. Ng, D. described the use of NaOH/ethanol as an etchant for the CR-39 detector, and have determined the corre and track etch properties of CR- 39 in NaOH/ethanol were derived from direct measurements. The bulk etch

  11. Integrated Ecogenomics Study for Bioremediation of Cr(VI) at Hanford 100H Area

    E-Print Network [OSTI]

    Chakraborty, Romy

    2008-01-01T23:59:59.000Z

    ecogenomics study for bioremediation of Cr(VI) at HanfordRegenesis In-situ bioremediation at Hanford 100H area ??

  12. Proton spectroscopy of 48Ni, 46Fe, and 44Cr

    E-Print Network [OSTI]

    M. Pomorski; M. Pfützner; W. Dominik; R. Grzywacz; A. Stolz; T. Baumann; J. S. Berryman; H. Czyrkowski; R. D?browski; A. Fija?kowska; T. Ginter; J. Johnson; G. Kami?ski; N. Larson; S. N. Liddick; M. Madurga; C. Mazzocchi; S. Mianowski; K. Miernik; D. Miller; S. Paulauskas; J. Pereira; K. P. Rykaczewski; S. Suchyta

    2014-07-06T23:59:59.000Z

    Results of decay spectroscopy on nuclei in vicinity of the doubly magic 48Ni are presented. The measurements were performed with a Time Projection Chamber with optical readout which records tracks of ions and protons in the gaseous volume. Six decays of 48Ni including four events of two-proton ground-state radioactivity were recorded. An advanced reconstruction procedure yielded the 2p decay energy for 48Ni of Q2p = 1.29(4) MeV. In addition, the energy spectra of \\b{eta}-delayed protons emitted in the decays of 44Cr and 46Fe, as well as half-lives and branching ratios were determined. The results were found to be consistent with the previous measurements made with Si detectors. A new proton line in the decay of 44Cr corresponding to the decay energy of 760 keV is reported. The first evidence for the \\b{eta}2p decay of 46 Fe, based on one clear event, is shown.

  13. Postirradiation deformation of ferritic Fe-Cr binary alloys

    SciTech Connect (OSTI)

    Hamilton, M.L.; Gelles, D.S.

    1991-06-01T23:59:59.000Z

    Six binary Fe-Cr alloys ranging from 3 to 18% chromium were irradiated in the form of miniature tensile specimens in the Fast Flux Test Facility and tested at room temperature. The irradiation conditions produced 7 to 30 dpa at 365 to 574{degrees}C. The major purpose of the experiment was to compare the behavior of these simple alloys with that of more complex commercial alloys, The tensile data obtained on these specimens at room temperature are discussed with appropriate fractographic and microstructural support. Previous studies on similar materials had revealed the presence of a feature typically exhibited in channel fractures: elongated voids were evident in shear bands of an irradiated and deformed TEM disk of a binary Fe-6Cr alloy. An additional purpose of the experiment was therefore to provide a better understanding of the potential contribution of channel fracture to deformation in ferritic alloys. No evidence for channel fracture was found, however. 14 refs., 6 figs., 2 tabs.

  14. Corrosion resistance evaluation of 22Cr duplex stainless steel weldments

    SciTech Connect (OSTI)

    Kopliku, A. [AGIP S.p.A., Milan (Italy); Bell, D. [AGIP UK, London (United Kingdom); Barteri, M. [C.S.M., Rome (Italy); Fowler, C. [CAPCIS, Manchester (United Kingdom)

    1996-12-01T23:59:59.000Z

    Among the alternatives for the materials to be used for the construction of two flowlines 22Cr duplex stainless steel was taken into consideration. Corrosion resistance of the welds when exposed to the produced sour fluids was considered as the most critical point, so a program of corrosion testing on the 22Cr duplex stainless steel welds was developed. Three different welding procedures were used and tested in two different laboratories; specimens belonging to one of the welding procedures were also tested after a pre-strain to assess the effect of the deformation induced in the pipe by the wrapping in a reel. Tests were performed in an environment simulating the expected flowlines internal service conditions. Several testing procedures were used. Pitting test according to ASTM G48 Standard were carried out in order to rank welds and exposure tests in simulated field conditions were performed to assess stress corrosion and localized corrosion resistance. Test results showed that all the welds passed the tests and were applicable as corrosion resistant in the service environment. A ranking of the weld procedure based on their corrosion resistance has been determined.

  15. Effect of Cr2O3 on the 18O Tracer Incorporation in SOFC Materials

    SciTech Connect (OSTI)

    Finsterbusch, M.; Lussier, A; Negusse, E; Zhu, Z; Smith, R; Schaefer, J; Idzerda, Y

    2010-01-01T23:59:59.000Z

    Investigations of the impact of Cr{sub 2}O{sub 3} overlayers on the oxygen self diffusion in two SOFC materials were conducted to gain insight into the Cr poisoning mechanism at the cathode side of solid oxide fuel cells (SOFCs) with stainless steel interconnects. High density Y{sub 0.15}Zr{sub 0.85}O{sub 2} (YSZ) and La{sub 0.6}Sr{sub 0.4}Co{sub 0.2}Fe{sub 0.8}O{sub 3} (LSCF) sintered pellets were covered with 3 to 30 nm Cr overlayers that were subsequently oxidized, forming Cr{sub 2}O{sub 3}. Standard {sup 18}O tracer diffusion experiments at 800 C were performed and ToF-SIMS profiling revealed that the oxygen ion diffusion coefficients were unaffected by the thin Cr{sub 2}O{sub 3} overlayers, which is predictable since they are a bulk property, but the extracted effective surface exchange coefficients varied with Cr{sub 2}O{sub 3} overlayer thickness. Solid-state reaction measurements and electronic structure considerations concerning the surface exchange, led to the conclusion that the observed oxygen uptake hindrance for Cr{sub 2}O{sub 3} capped LSCF and the slight increase of the surface exchange coefficient for Cr{sub 2}O{sub 3} capped YSZ can be attributed to the electronic properties of Cr{sub 2}O{sub 3}. A critical thickness for Cr{sub 2}O{sub 3} was determined to be 12 nm where the transition from decreasing cathode-performance to a Cr{sub 2}O{sub 3}-property-governed regime occurs.

  16. Effect of Cr2O3 on the O-18 Tracer Incorporation in SOFC Materials

    SciTech Connect (OSTI)

    Finsterbusch, Martin; Lussier, Alexandre; Negusse, Ezana; Zhu, Zihua; Smith, Richard J.; Schaefer, Jurgen A.; Idzerda, Yves U.

    2010-05-21T23:59:59.000Z

    To gain insight into the Cr poisoning mechanism at the cathode side of solid oxide fuel cells (SOFCs) with stainless steel interconnects, we conducted an investigation of the impact of Cr2O3 overlayers on oxygen diffusion in various SOFC electrolyte and cathode materials. High density Gd0.10Ce0.90O2 (GDC), Y0.15Zr0.85O2 (YSZ) and La0.6Sr0.4Co0.2Fe0.8O2 (LSCF) sintered pellets were covered with 3 to 30 nm Cr - overlayers that were subsequently oxidized, forming Cr2O3. Standard 18O tracer diffusion experiments at 800°C were performed and TOFSIMS profiling revealed a Cr2O3 thickness-dependent oxygen uptake process. The oxygen ion diffusion coefficients were found to be unaffected by the Cr2O3 overlayers, which is predictable since they are a bulk property. The extracted surface exchange coefficients however varied with Cr2O3 overlayer thickness. Solid state reaction measurements of Cr2O3 with the three materials of interest, and electronic structure considerations concerning the surface exchange, led to the conclusion that the observed oxygen uptake hindrance for LSCF and the slight increase of the surface exchange coefficient for YSZ can be attributed to the electronic properties of Cr2O3. The rate limitation of the oxygen incorporation into the materials is therefore strongly dependent on the surface electronic properties. A critical thickness of Cr2O3 was determined where the transition from decreased cathode-performance to a Cr2O3-property-governed regime occurs.

  17. ENDOR study of Cr3 centers substituting for lithium in lithium niobate

    E-Print Network [OSTI]

    Malovichko, Galina

    ENDOR study of Cr3¿ centers substituting for lithium in lithium niobate G. Malovichko,1, * V centers in lithium niobate crystals were investigated with the help of electron nuclear double resonance and the parameters of hyperfine and quadrupole interactions were determined. It is found that Cr3 substitutes for Li

  18. NASA/CR-2002-211759 ICASE Report No. 2002-26

    E-Print Network [OSTI]

    Lüttgen, Gerald

    7121 Standard Drive Hanover, MD 21076-1320 #12;NASA/CR-2000- ICASE Report No. NASA/CR-2002-211759 ICASE 5285 Port Royal Road Hanover, MD 21076-1320 Springfield, VA 22161-2171 (301) 621-0390 (703) 487

  19. Field Investigations of Lactate-Stimulated Bioreduction of Cr(VI) at Hanford 100H

    SciTech Connect (OSTI)

    T. C. Hazen; B. Faybishenko; D. Joyner; S. Borglin; E. Brodie; S.; K. Williams; J. Peterson; J. Wan; T. Tokunaga; M.; P. E. Long; Resch, C.T.; Newcomer, D.; Koenigsberg, S.; Willet, A.

    2005-04-20T23:59:59.000Z

    The overall objective of this paper is to carry out field investigations to assess the potential for immobilizing and detoxifying chromium-contaminated groundwater using lactate-stimulated bioreduction of Cr(VI) to Cr(III) at the Hanford 100H site.

  20. Precipitation in a Cu–Cr–Zr–Mg alloy during aging

    SciTech Connect (OSTI)

    Cheng, J.Y., E-mail: bigchengjianyi@163.com; Shen, B.; Yu, F.X.

    2013-07-15T23:59:59.000Z

    The precipitation processes in a Cu-0.69Cr-0.10Zr-0.02Mg alloy aged at 450 °C and 550 °C have been investigated by transmission electron microscopy and high resolution transmission electron microscopy. The precipitation sequence in this alloy aged at 450 °C is: supersaturated solid solution ? Guinier–Preston zone (fcc Cr-rich phase) ? ordered fcc Cr-rich phase ? ordered bcc Cr-rich phase. The precipitation sequence in this alloy aged at 550 °C is: supersaturated solid solution ? ordered fcc Cr-rich phase ? ordered bcc Cr-rich phase. In the evolution of decomposition, the orientation relationship between the precipitates and the Cu matrix changes from cube-on-cube to Nishiyama–Wassermann orientation. The ordering of Cr-rich precipitates facilitates the formation of the bcc precipitates and promotes the development of Nishiyama–Wassermann orientation. - Highlights: • Two different precipitation sequences in the Cu–Cr–Zr–Mg alloy are proposed. • The changes in orientation relationship of the precipitates are presented. • The roles of ordering and coherent interface of the precipitates are discussed.

  1. Strain rate dependence of deformation mechanisms in a NiTiCr shape-memory alloy

    E-Print Network [OSTI]

    Nemat-Nasser, Sia

    Strain rate dependence of deformation mechanisms in a Ni­Ti­Cr shape-memory alloy Sia Nemat of a Ni­Ti­Cr shape-memory alloy is investigated at various initial temperatures, over a wide range significantly affects the superelastic and yielding behavior of this shape-memory alloy within the superelastic

  2. Corrosion Behavior of Solution-Annealed CoCrMo Medical Implant

    E-Print Network [OSTI]

    Shull, Kenneth R.

    ! ! ! Corrosion Behavior of Solution- Annealed CoCrMo Medical Implant Alloys Pooja Panigrahi University June 6, 2011 #12;! ! ""! Corrosion Behavior of Solution-Annealed CoCrMo Medical Implant Alloys and Applied Sciences Northwestern University June 6, 2011 Abstract Corrosion behavior of solution annealed

  3. FINITE JET DETERMINATION OF LOCAL CR AUTOMORPHISMS THROUGH RESOLUTION OF DEGENERACIES

    E-Print Network [OSTI]

    Boyer, Edmond

    FINITE JET DETERMINATION OF LOCAL CR AUTOMORPHISMS THROUGH RESOLUTION OF DEGENERACIES BERNHARD real-analytic CR automorphisms of M are uniquely determined by their k-jets (at p). To prove special class of nonminimal hypersurfaces for which one may use known techniques to prove the finite jet

  4. Solid state phase equilibria and intermetallic compounds of the Al-Cr-Ho system

    SciTech Connect (OSTI)

    Pang, Mingjun [Laboratory of Nonferrous Metal Materials and New Processing Technology, Ministry of Education, Guangxi University, Nanning, Guangxi 530004 (China) [Laboratory of Nonferrous Metal Materials and New Processing Technology, Ministry of Education, Guangxi University, Nanning, Guangxi 530004 (China); SAIC-GM-Wuling Automobile Co., Ltd., Liuzhou, Guangxi 545007 (China); Zhan, Yongzhong, E-mail: zyzmatres@yahoo.com.cn [Laboratory of Nonferrous Metal Materials and New Processing Technology, Ministry of Education, Guangxi University, Nanning, Guangxi 530004 (China)] [Laboratory of Nonferrous Metal Materials and New Processing Technology, Ministry of Education, Guangxi University, Nanning, Guangxi 530004 (China); Du, Yong [State Key Laboratory of Powder Metallurgy, Central South University, Changsha, Hunan 410083 (China)] [State Key Laboratory of Powder Metallurgy, Central South University, Changsha, Hunan 410083 (China)

    2013-02-15T23:59:59.000Z

    The solid state phase equilibria of the Al-Cr-Ho ternary system at 500 Degree-Sign C were experimentally investigated. The phase relations at 500 Degree-Sign C are governed by 14 three-phase regions, 29 two-phase regions and 15 single-phase regions. The existences of 10 binary compounds and 2 ternary phases have been confirmed. Al{sub 11}Cr{sub 2}, Al{sub 11}Cr{sub 4} and Al{sub 17}Ho{sub 2} were not found at 500 Degree-Sign C. Crystal structures of Al{sub 9}Cr{sub 4} and Al{sub 8}Cr{sub 4}Ho were determined by the Rietveld X-ray powder data refinement. Al{sub 9}Cr{sub 4} was found to exhibit cubic structure with space group I4-bar 3m (no. 217) and lattice parameters a=0.9107(5) nm. Al{sub 8}Cr{sub 4}Ho crystallizes in ThMn{sub 12} structure type with space group I4/mmm (no. 139) and lattice parameters a=0.8909(4) nm, c=0.5120(5) nm. It is concluded that the obtained Al{sub 4}Cr phase in this work should be {mu}-Al{sub 4}Cr by comparing with XRD pattern of the hexagonal {mu}-Al{sub 4}Mn compound. - Graphical abstract: The solid state phase equilibria of the Al-Cr-Ho ternary system at 500 Degree-Sign C. Highlights: Black-Right-Pointing-Pointer Al-Cr-Ho system has been investigated. Black-Right-Pointing-Pointer Al{sub 9}Cr{sub 4} has cubic structure with space group I4-bar 3m. Black-Right-Pointing-Pointer Al{sub 8}Cr{sub 4}Ho crystallizes in ThMn{sub 12} type with space group I4/mmm. Black-Right-Pointing-Pointer Al{sub 4}Cr phase is {mu}-type at 500 Degree-Sign C.

  5. Helical spin-density wave in Fe/Cr trilayers with perfect interfaces

    SciTech Connect (OSTI)

    Fishman, R.S.

    1998-07-01T23:59:59.000Z

    Despite the presence of only collinear, commensurate (C) and incommensurate (I) spin-density waves (SDW`s) in bulk Cr, the interfacial steps in Fe/Cr multilayers are now believed to stabilize a helical (H) SDW within the Cr spacer. Yet H SDW`s were first predicted in an Fe/Cr trilayer with perfect interfaces when the orientation of the Fe moments does not favor C ordering: if the number of Cr monolayers is even (odd) and the Fe moments are pointing in the same (opposite) direction, then a C SDW does not gain any coupling energy. Under these circumstances, a simple model verifies that H ordering is indeed favored over 1 ordering provided that the Fermi surface mismatch is sufficiently small or the temperature sufficiently high.

  6. Mesoporous carbon -Cr2O3 composite as an anode material for lithium ion batteries

    SciTech Connect (OSTI)

    Guo, Bingkun [ORNL; Chi, Miaofang [ORNL; Sun, Xiao-Guang [ORNL; Dai, Sheng [ORNL

    2012-01-01T23:59:59.000Z

    Mesoporous carbon-Cr2O3 (M-C-Cr2O3) composite was prepared by co-assembly of in-situ formed phenolic resin, chromium precursor, and Pluronic block copolymer under acidic conditions, followed by carbonization at 750oC under Argon. The TEM results confirmed that the Cr2O3 nanoparticles, ranging from 10 to 20 nm, were well dispersed in the matrix of mesoporous carbon. The composite exhibited an initial reversible capacity of 710 mAh g-1 and good cycling stability, which is mainly due to the synergic effects of carbons within the composites, i.e. confining the crystal growth of Cr2O3 during the high temperature treatment step and buffering the volume change of Cr2O3 during the cycling step. This composite material is a promising anode material for lithium ion batteries.

  7. Void swelling resistance in Fe-Cr alloys at 200 dpa

    SciTech Connect (OSTI)

    Gelles, D.S. [Pacific Northwest Lab., Richland, WA (United States)

    1995-09-01T23:59:59.000Z

    Microstructural examinations have been performed on a serious of binary Fe-cr alloys irradiated to 200 dpa at 425 C in a fast breeder reactor. The alloy compositions ranged from 3% to 18% Cr in 3% Cr increments, and the irradiation temperature corresponded to the peak swelling condition for this alloy class. Density measurements showed swelling levels as high as 7.4%, with the highest swelling found in the Fe-9Cr and Fe-6Cr alloys. Microstructural examinations revealed that the highest swelling conditions contained well-developed voids, often as large as 100 nm, and a dislocation network comprised of both a/2<111> and a<100> Burgers vectors. Swelling was lower in the other alloys, and the swelling reduction could be correlated with increased precipitation. These results are considered in light of the current theories for low swelling in ferritic alloys, but no theory is available to completely explain the results.

  8. The resistance to cavitation erosion of CrMnN stainless steels

    SciTech Connect (OSTI)

    Fu, W.T. [Yanshan Univ., Qinhuangdao (China). Dept. of Materials Engineering] [Yanshan Univ., Qinhuangdao (China). Dept. of Materials Engineering; [Harbin Inst. of Tech. (China); Jing, T.F.; Zheng, Y.Z. [Yanshan Univ., Qinhuangdao (China). Dept. of Materials Engineering] [Yanshan Univ., Qinhuangdao (China). Dept. of Materials Engineering; Yang, Y.B. [Yanshan Univ., Qinhuangdao (China). Dept. of Materials Engineering] [Yanshan Univ., Qinhuangdao (China). Dept. of Materials Engineering; [Bohai Aluminum Industries Co., Ltd., Qinhuangdao (China); Yao, M. [Harbin Inst. of Tech. (China)] [Harbin Inst. of Tech. (China)

    1998-12-01T23:59:59.000Z

    The resistance to cavitation erosion (CE) was measured using a magnetostrictive device and a rotating disk device for some CrMnN stainless steels (Chinese patent ZL 90 1 02197.0). The microstructural changes in the surface layer before and after CE were analyzed by use of Mossbauer spectra. Results show that the resistance to CE of duplex austenitic-martensitic CrMnN stainless steels is much better than that of ZG0Cr13Ni4-6Mo and ZG0Cr16Ni5Mo steel, which are in common use for hydraulic turbine runners. The metastable austenite and its changes in the process of CE are the key factors why the CrMnN stainless steels have excellent resistance to cavitation erosion.

  9. Postirradiation deformation behavior in ferritic Fe-Cr alloys

    SciTech Connect (OSTI)

    Hamilton, M.L.; Gelles, D.S. [Pacific Northwest Lab., Richland, VA (United States); Gardner, P.L. [Univ. of Missouri, Rolla (United States)

    1992-12-31T23:59:59.000Z

    It has been demonstrated that fast neutron irradiation produces significant hardening in simple Fe(3-18)Cr binary alloys irradiated to about 35 dpa in the temperature range 365 to 420{degrees}C, whereas irradiation at 574{degrees}C produces hardening only for 15% or more chromium. The irradiation-induced changes in tensile properties are discussed in terms of changes in the power law work hardening exponent. The work hardening exponent of the lower chromium alloys decreased significantly after low temperature irradiation ({le}420{degrees}C) but increased after irradiation at 574{degrees}C. The higher chromium alloys failed either in cleavage or in a mixed ductile/brittle fashion. Deformation microstructures are presented to support the tensile behavior.

  10. Postirradiation deformation behavior in ferritic Fe-Cr alloys

    SciTech Connect (OSTI)

    Hamilton, M.L.; Gelles, D.S. [Pacific Northwest Lab., Richland, WA (United States); Gardner, P.L. [Missouri Univ., Rolla, MO (United States)

    1992-06-01T23:59:59.000Z

    It has been demonstrated that fast-neutron irradiation produces significant hardening in simple Fe-(3-18)Cr binary alloys irradiated to about 35 dpa in the temperature range 365 to 420{degrees}C, whereas irradiation at 574{degrees}C produces hardening only for 15% or more chromium. The irradiation-induced changes in tensile properties are discussed in terms of changes in the power law work-hardening exponent. The work-hardening exponent of the lower chromium alloys decreased significantly after low-temperature irradiation ({le} 420{degrees}C) but increased after irradiation at 574{degrees}C. The higher chromium alloys failed either in cleavage or in a mixed ductile/brittle fashion. Deformation microstructures are presented to support the tensile behavior.

  11. Postirradiation deformation behavior in ferritic Fe-Cr alloys

    SciTech Connect (OSTI)

    Hamilton, M.L.; Gelles, D.S. (Pacific Northwest Lab., Richland, WA (United States)); Gardner, P.L. (Missouri Univ., Rolla, MO (United States))

    1992-06-01T23:59:59.000Z

    It has been demonstrated that fast-neutron irradiation produces significant hardening in simple Fe-(3-18)Cr binary alloys irradiated to about 35 dpa in the temperature range 365 to 420[degrees]C, whereas irradiation at 574[degrees]C produces hardening only for 15% or more chromium. The irradiation-induced changes in tensile properties are discussed in terms of changes in the power law work-hardening exponent. The work-hardening exponent of the lower chromium alloys decreased significantly after low-temperature irradiation ([le] 420[degrees]C) but increased after irradiation at 574[degrees]C. The higher chromium alloys failed either in cleavage or in a mixed ductile/brittle fashion. Deformation microstructures are presented to support the tensile behavior.

  12. STARDUST INVESTIGATION INTO THE CR CHONDRITE GROVE MOUNTAIN 021710

    SciTech Connect (OSTI)

    Zhao Xuchao; Lin Yangting [Key Laboratory of the Earth's Deep Interior, Institute of Geology and Geophysics, Chinese Academy of Sciences, 19 Beituchengxi Road, Beijing 100029 (China); Floss, Christine [Laboratory for Space Sciences and Physics Department, Washington University, One Brookings Drive, St. Louis, MO 63130 (United States); Bose, Maitrayee, E-mail: linyt@mail.igcas.ac.cn [Department of Chemistry and Biochemistry, Arizona State University, P.O. Box 871604, Tempe, AZ 85287 (United States)

    2013-05-20T23:59:59.000Z

    We report the presolar grain inventory of the CR chondrite Grove Mountain 021710. A total of 35 C-anomalous grains ({approx}236 ppm) and 112 O-anomalous grains ({approx}189 ppm) were identified in situ using NanoSIMS ion imaging. Of 35 C-anomalous grains, 28 were determined to be SiC grains by Auger spectroscopy. Seven of the SiC grains were subsequently measured for N and Si isotopes, allowing classification as one nova grain, one Y grain, one Z grain, and four mainstream grains. Eighty-nine out of 112 O-anomalous grains belong to Group 1, indicating origins in low-to-intermediate-mass red giant and asymptotic giant branch stars. Twenty-one are Group 4 grains and have origins in supernovae. Auger spectroscopic elemental measurements of 35 O-anomalous grains show that 33 of them are ferromagnesian silicates. They have higher Mg/(Mg+Fe) ratios than those reported in other meteorites, suggesting a lower degree of alteration in the nebula and/or asteroid parent bodies. Only two oxide grains were identified, with stoichiometric compositions of MgAl{sub 2}O{sub 4} and SiO{sub 2}, respectively. The presolar silicate/oxide ratio of GRV 021710 is comparable with those of the CR3 chondrites (QUE 99177 and MET 00426) and primitive interplanetary dust particles. In order to search for presolar sulfides, the meteorite was also mapped for S isotopes. However, no presolar sulfides were found, suggesting a maximum abundance of 2 ppm. The scarcity of presolar sulfides may be due to their much faster sputtering rate by cosmic rays compared to silicates.

  13. Integrated Ecogenomics Study for Bioremediation of Cr(VI) at Hanford 100H Area

    SciTech Connect (OSTI)

    Chakraborty, Romy; Chakraborty, Romy

    2008-08-12T23:59:59.000Z

    Hexavalent chromium is a widespread contaminant found in groundwater. In order to stimulate microbially mediated Cr(VI)-reduction, a poly-lactate compound was injected into Cr(VI)-contaminated aquifers at site 100H at Hanford. Investigation of bacterial community composition using high-density DNA microarray analysis of 16S rRNA gene products revealed a stimulation of Pseudomonas, Desulfovibrio and Geobacter species amongst others. Enrichment of these organisms coincided with continued Cr(VI) depletion. Functional gene-array analysis of DNA from monitoring well indicated high abundance of genes involved in nitrate-reduction, sulfate-reduction, iron-reduction, methanogenesis, chromium tolerance/reduction. Clone-library data revealed Psedomonas was the dominant genus in these samples. Based on above results, we conducted lab investigations to study the dominant anaerobic culturable microbial populations present at this site and their role in Cr(VI)-reduction. Enrichments using defined anaerobic media resulted in isolation of an iron-reducing, a sulfate-reducing and a nitrate-reducing isolate among several others. Preliminary 16S rDNA sequence analysis identified the isolates as Geobacter metallireducens, Pseudomonas stutzeri and Desulfovibrio vulgaris species respectively. The Pseudomonas isolate utilized acetate, lactate, glycerol and pyruvate as alternative carbon sources, and reduced Cr(VI). Anaerobic washed cell suspension of strain HLN reduced almost 95?M Cr(VI) within 4 hr. Further, with 100?M Cr(VI) as sole electron-acceptor, cells grew to 4.05 x 107 /ml over 24 h after an initial lag, demonstrating direct enzymatic Cr(VI) reduction coupled to growth. These results demonstrate that Cr(VI)-immobilization at Hanford 100H site could be mediated by direct microbial metabolism in addition to indirect chemical reduction of Cr(VI) by end-products of microbial activity.

  14. Electron concentration and phase stability in NbCr2-based Laves phase alloys

    SciTech Connect (OSTI)

    Zhu, J.H.; Liaw, P.K. [Univ. of Tennessee, Knoxville, TN (United States). Dept. of Materials Science and Engineering; Liu, C.T. [Oak Ridge National Lab., TN (United States). Metals and Ceramics Div.

    1997-05-12T23:59:59.000Z

    Phase stability in NbCr{sub 2}-based transition-metal Laves phases was studied, based on the data reported for binary X-Cr, Nb-X, and ternary Nb-Cr-X phase diagrams. It was shown that when the atomic size ratios are kept identical, the average electron concentration factor, e/a, is the dominating factor in controlling the phase stability of NbCr{sub 2}-based transition-metal Laves phases. The e/a ratios for different Laves polytypes were determined as followed: with e/a < 5.76, the C15 structure is stabilized; at an e/a range of 5.88--7.53, the C14 structure is stabilized; with e/a > 7.65, the C15 structure is stabilized again. A further increase in the electron concentration factor (e/a > 8) leads to the disordering of the alloy. The electron concentration effect on the phase stability of Mg-based Laves phases and transition-metal A{sub 3}B intermetallic compounds is also reviewed and compared with the present observations in transition-metal Laves phases. In order to verify the e/a/phase stability relationship experimentally, additions of Cu (with e/a = 11) were selected to replace Cr in the NbCr{sub 2} Laves phase. Experimental results for the ternary Nb-Cr-Cu system are reported and discussed in terms of the correlation between the e/a ratio and phase stability in NbCr{sub 2}-based Laves phases. A new phase was found, which has an average composition of Nb-47Cr-3Cu. Within the solubility limit, the electron concentration and phase stability relationship is obeyed in the Nb-Cr-Cu system.

  15. Simulation of Reduction of Cr(VI) by Fe(II) Produced Electrochemically in a Parallel-Plate Electrochemical Reactor

    E-Print Network [OSTI]

    at the cathode, electrocoagulation uses electricity to produce a reducing agent ferrous ions from an iron anode the reduction of Cr VI by permeable reactive barriers. Gheju and Lovi7 reported that the re- duction of Cr VI

  16. Implementation of scattering pinhole diagnostic for detection of fusion products on CR-39 at high particle fluence

    E-Print Network [OSTI]

    Orozco, David, S.B. Massachusetts Institute of Technology

    2014-01-01T23:59:59.000Z

    Many Inertial Confinement Fusion (ICF) experiments use solid-state nuclear track detector CR-39 as a means to detect different types of nuclear products. Until recently, it was difficult to use CR-39 in experiments with ...

  17. Cr-Ga-N materials for negative electrodes in Li rechargeable batteries : structure, synthesis and electrochemical performance

    E-Print Network [OSTI]

    Kim, Miso

    2007-01-01T23:59:59.000Z

    Electrochemical performances of two ternary compounds (Cr2GaN and Cr3GaN) in the Cr-Ga-N system as possible future anode materials for lithium rechargeable batteries were studied. Motivation for this study was dealt in ...

  18. Lipid bloated subretinal microglial cells are at the origin of Drusen appearance in CX3CR1 deficient mice

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Lipid bloated subretinal microglial cells are at the origin of Drusen appearance in CX3CR1 of sizeable dome-shaped material below the RPE. We show that aged CX3CR1-/- mice present with drusen,version1-1Sep2008 #12;shaped sub-RPE debris of an equivalent size (7). We recently demonstrated that CX3CR

  19. Phase equilibria of an Al0.5CrFeCoNiCu High Entropy Alloy

    E-Print Network [OSTI]

    Jones, N. G.; Frezza, A.; Stone, H. J.

    2014-07-27T23:59:59.000Z

    /Co/Fe with Cr exhibit multiphase regions, the solubility of Cr in each Ni/Co/Fe binary solid solutions at elevated temperatures is always significant [22,34–36]. The Fig. 4. BSEI micrographs of Al0.5CrFeCoNiCu following 1000 h heat treatment at (a) 700 1C, (b...

  20. Differential isotopic fractionation during Cr(VI) reduction by an aquifer-derived bacterium under arobic versus denitrifying conditions

    SciTech Connect (OSTI)

    Han, R.; Qin, L.; Brown, S. T.; Christensen, J. N.; Beller, H. R.

    2012-02-01T23:59:59.000Z

    We studied Cr isotopic fractionation during Cr(VI) reduction by Pseudomonas stutzeri strain RCH2. Despite the fact that strain RCH2 reduces Cr(VI) co-metabolically under both aerobic and denitrifying conditions and at similar specific rates, fractionation was markedly different under these two conditions (ε ~2? aerobically and ~0.4? under denitrifying conditions).

  1. Scanning Tunneling Microscopy Study of Cr-doped GaN Surface Grown by RF Plasma Molecular Beam Epitaxy

    E-Print Network [OSTI]

    on sapphire substrate [2]. Park et al. performed the growth of Cr doped GaN single crystal by sodium fluxScanning Tunneling Microscopy Study of Cr-doped GaN Surface Grown by RF Plasma Molecular Beam Orleans, New Orleans, LA 70148, USA Abstract: Cr doped GaN was grown by rf N-plasma molecular beam epitaxy

  2. Scanning Tunneling Microscopy Study of Cr-doped GaN Surface Grown by RF Plasma Molecular Beam Epitaxy

    E-Print Network [OSTI]

    doped MOCVD grown GaN on sapphire substrate [2]. Park et al. performed the growth of Cr doped GaN singleScanning Tunneling Microscopy Study of Cr-doped GaN Surface Grown by RF Plasma Molecular Beam Orleans, New Orleans, LA 70148, USA Abstract: Cr doped GaN was grown by rf N-plasma molecular beam epitaxy

  3. Air-Con International: Noncompliance Determination and Proposed...

    Energy Savers [EERE]

    Notice of Noncompliance Determination to Air-Con International finding that a variety of central air conditioners and air conditioning heat pumps distributed under the Air-Con...

  4. Probe Mössbauer spectroscopy of mechanical alloying in binary Cr?{sup 57}Fe(1 at%) system

    SciTech Connect (OSTI)

    Elsukov, Evgeny P., E-mail: e-yelsukov@mail.ru; Kolodkin, Denis A., E-mail: e-yelsukov@mail.ru; Ul'yanov, Alexander L., E-mail: e-yelsukov@mail.ru; Porsev, Vitaly E., E-mail: e-yelsukov@mail.ru [Physical-Technical Institute UrB RAS, Izhevsk (Russian Federation)

    2014-10-27T23:59:59.000Z

    Solid state reactions during mechanical alloying (MA) in a binary mixture of powdered Cr and {sup 57}Fe in atomic ratio of 99:1 have been studied using {sup 57}Fe Mössbauer spectroscopy, X-ray diffraction and Auger spectrometry. The proposed model of MA includes formation of Cr(Fe){sub x}O{sub y} oxides at the contact places of Cr and Fe particles, formation of nanostructure with simultaneous dissolution of the oxides, penetration of Fe atoms along grain boundaries in close-to-boundary distorted zones of interfaces in a substitutional position, formation of the substitutional solid solution of Fe in Cr in the body of grains. It was shown that the increase in the BCC lattice parameter on increasing the milling time is due to the dissolution of oxides and formation of interstitial solid solution of O in Cr. There were established substantial differences in consumption of BCC Fe in a Mg ? Al ? Si ? Cr sequence due to the major role of chemical interaction of Mg(Al,Si,Cr) with Fe.

  5. LA MAESTRA EN CIENCIAS (NEUROBIOLOGA), Con el objetivo de formar profesionales con conocimientos slidos de los

    E-Print Network [OSTI]

    Islas, León

    LA MAESTRÍA EN CIENCIAS (NEUROBIOLOGÍA), Con el objetivo de formar profesionales con conocimientos, neurociencias, psicobiología, física, matemáticas, estadística y metodología de la ciencia, a presentar su Nacional de Posgrado de Calidad del Consejo Nacional de Ciencia y Tecnología en categoría: COMPETENTE

  6. Nanoscale Phase Separation In Epitaxial Cr-Mo and Cr-V Alloy Thin Films Studied Using Atom Probe Tomography: Comparison Of Experiments And Simulation

    SciTech Connect (OSTI)

    Devaraj, Arun; Kaspar, Tiffany C.; Ramanan, Sathvik; Walvekar, Sarita K.; Bowden, Mark E.; Shutthanandan, V.; Kurtz, Richard J.

    2014-11-21T23:59:59.000Z

    Tailored metal alloy thin film-oxide interfaces generated using molecular beam epitaxial (MBE) deposition of alloy thin films on a single crystalline oxide substrate can be used for detailed studies of irradiation damage response on the interface structure. However presence of nanoscale phase separation in the MBE grown alloy thin films can impact the metal-oxide interface structure. Due to nanoscale domain size of such phase separation it is very challenging to characterize by conventional techniques. Therefor laser assisted atom probe tomography (APT) was utilized to study the phase separation in epitaxial Cr0.61Mo0.39, Cr0.77Mo0.23, and Cr0.32V0.68 alloy thin films grown by MBE on MgO(001) single crystal substrates. Statistical analysis, namely frequency distribution analysis and Pearson coefficient analysis of experimental data was compared with similar analyses conducted on simulated APT datasets with known extent of phase separation. Thus the presence of phase separation in Cr-Mo films, even when phase separation was not clearly observed by x-ray diffraction, and the absence of phase separation in the Cr-V film were thus confirmed.

  7. High temperature oxidation behavior of Fe-Cr-Al foils

    SciTech Connect (OSTI)

    Chang, C.S.; Jha, B. [Texas Instruments, Inc., Attleboro, MA (United States)

    1998-12-31T23:59:59.000Z

    Metallic catalytic converters for automotive emission control is becoming an important application for heat resistant alloys as more design opportunities are realized. The service conditions and design of metallic catalytic converters require the alloy to be highly oxidation resistant at gauges typically at 50 microns or less. For conventional heat resistant alloy design the goal is to form a well adherent scale on the alloy surface to protect the alloy matrix from being oxidized. However, the thin gauge results in a limited supply of alloying elements that can form the protective scale on the surface. The alloy chemistry has to be optimized to have the minimum oxidation while maintaining processing characteristics. Furthermore, the ratio of scale thickness to foil gauge is significant and the stress state between them introduces measurable permanent distortion of the foil. In this study, the effect of alloying elements on the oxidation behavior of commonly used Fe-Cr-Al alloys was quantified by the oxidation weight gain and length change measurements.

  8. ORNL/CON-496 METHODOLOGY FOR RECALCULATING

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    ORNL/CON-496 METHODOLOGY FOR RECALCULATING AND VERIFYING SAVINGS ACHIEVED BY THE SUPER ESPC PROGRAM for Recalculating and Verifying Savings Achieved by the Super ESPC Program Martin Schweitzer John A. Shonder Patrick.....................................................................................................................2 2. DESCRIPTION OF SUPER ESPC PROGRAM ......................................................... 3 2

  9. Con Eduardo Pavlovsky, cinco años después

    E-Print Network [OSTI]

    Giella, Miguel Á ngel

    1988-10-01T23:59:59.000Z

    preguntas que seguramente tendrán que ver con mi próxima problemática. No sé. Creo que uno no sabe mucho para dónde va a ir, ¿no?"4 Los cinco años transcurridos desde estas declaraciones han ser vido a este autor-actor-psicoanalista argentino para...

  10. iCons, 2011 Cholera in Haiti

    E-Print Network [OSTI]

    Auerbach, Scott M.

    © iCons, 2011 Cholera in Haiti Handouts: 1. 1-page explainer of cholera outbreak in Haiti Assignments Part 1: Developing an Explainer 1. In-class written assignment of societal challenge with cholera in Haiti 2. In-class written assignment of scientific investigation relating to cholera 3. Take

  11. CORROSION OF Fe-10Al-Cr ALLOYS BY COAL CHAR

    E-Print Network [OSTI]

    Gordon, B.A.

    2011-01-01T23:59:59.000Z

    Potent.ials Encountered in Coal Conversion Systems", NASA TNof Illinois #6 ash and coal char. Figure 1. Cross sectionsof Fe-lOAl-Cr Alloys by Coal Char B. A. Gordon and V.

  12. A few-cycle Cr??:YAG laser and optical studies of photonic crystals

    E-Print Network [OSTI]

    Ripin, Daniel Jacob, 1973-

    2002-01-01T23:59:59.000Z

    A prismless Cr4+:YAG laser was used to generate 20 fs pulses at 1450 nm with a bandwidth of 190 nm FWHM. Intracavity group velocity dispersion was compensated with double-chirped mirrors. Pulse spectrum was observable from ...

  13. Al2O3 ADHERENCE ON CoCrAl ALLOYS

    E-Print Network [OSTI]

    Kingsley, L.M.

    2010-01-01T23:59:59.000Z

    in a one percent aluminum alloy. After an aluminizing treat­oxidation, most alloys contained enough aluminum to preventof a dilute Co-Cr alloy with no aluminum or hafnium, and

  14. NASA/CR-2001-211271 ICASE Interim Report No. 39

    E-Print Network [OSTI]

    Muñoz, César A.

    Center for AeroSpace Information 712 ! Standard Drive Hanover, MD 21076- ! 320 #12;NASA/CR-2001 Hanover. MD 21076-1320 (301) 621-0390 National Technical Intormation Service (NTIS) 5285 Port Royal Road

  15. NASA/CR-2001-210853 ICASE Report No. 2001-7

    E-Print Network [OSTI]

    Muñoz, César A.

    Center for AeroSpace Information 7121 Standard Drive Hanover, MD 21076-1320 #12;NASA/CR-2001-210853 ICASE Center for AeroSpace hffomlation (CASI) 7121 Standard Drive Hanover, MD 21076 1320 (301) 621 0390

  16. NASA/CR-2007-214863 NIA Report No. 2007-06

    E-Print Network [OSTI]

    Muñoz, César A.

    Center for AeroSpace Information 7115 Standard Drive Hanover, MD 21076-1320 #12;NASA/CR-2007-214863 NIA) National Technical Information Service (NTIS) 7115 Standard Drive 5285 Port Royal Road Hanover, MD 21076

  17. Photochemistry of Methyl Bromide on the ?-Cr2O3(0001) Surface...

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

    formed. In contrast, pre-oxidation of the surface (using an oxygen plasma source) led to capping of surface Cr3+ sites and near complete removal of CH3Br TPD states above...

  18. Oxygen Plasma Activation of Cr(CO)(6) on ?-Fe2O3(0001)...

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

    on ?-Fe2O3(0001). Abstract: The chemistry of Cr(CO)6 on the Fe3O4(111) surface termination of ?-Fe2O3(0001) was explored using temperature programmed desorption (TPD),...

  19. NOAA Technical Report NESDIS TBD Cross Track Infrared Sounder (CrIS)

    E-Print Network [OSTI]

    NOAA Technical Report NESDIS TBD Cross Track Infrared Sounder (CrIS) Sensor Data Record (SDR) User. NESDIS 114 Satellite Rainfall Estimation Over South America: Evaluation of Two Major Events. Daniel A

  20. CORROSION OF Fe-10Al-Cr ALLOYS BY COAL CHAR

    E-Print Network [OSTI]

    Gordon, B.A.

    2011-01-01T23:59:59.000Z

    owned rights. LBL-6946 Corrosion of Fe-lOAl-Cr Alloys byOctober, 1977 Abstract Corrosion of iron-base alloys at 982°high-temperature induced corrosion are probably sulfides and

  1. Flat panel display using Ti-Cr-Al-O thin film

    DOE Patents [OSTI]

    Jankowski, Alan F. (Livermore, CA); Schmid, Anthony P. (Solan Beach, CA)

    2002-01-01T23:59:59.000Z

    Thin films of Ti--Cr--Al--O are used as a resistor material. The films are rf sputter deposited from ceramic targets using a reactive working gas mixture of Ar and O.sub.2. Resistivity values from 10.sup.4 to 10.sup.10 Ohm-cm have been measured for Ti--Cr--Al--O film <1 .mu.m thick. The film resistivity can be discretely selected through control of the target composition and the deposition parameters. The application of Ti--Cr--Al--O as a thin film resistor has been found to be thermodynamically stable, unlike other metal-oxide films. The Ti--Cr--Al--O film can be used as a vertical or lateral resistor, for example, as a layer beneath a field emission cathode in a flat panel display; or used to control surface emissivity, for example, as a coating on an insulating material such as vertical wall supports in flat panel displays.

  2. Process for producing Ti-Cr-Al-O thin film resistors

    DOE Patents [OSTI]

    Jankowski, Alan F. (Livermore, CA); Schmid, Anthony P. (Solana Beach, CA)

    2001-01-01T23:59:59.000Z

    Thin films of Ti-Cr-Al-O are used as a resistor material. The films are rf sputter deposited from ceramic targets using a reactive working gas mixture of Ar and O.sub.2. Resistivity values from 10.sup.4 to 10.sup.10 Ohm-cm have been measured for Ti-Cr-Al-O film <1 .mu.m thick. The film resistivity can be discretely selected through control of the target composition and the deposition parameters. The application of Ti-Cr-Al-O as a thin film resistor has been found to be thermodynamically stable, unlike other metal-oxide films. The Ti-Cr-Al-O film can be used as a vertical or lateral resistor, for example, as a layer beneath a field emission cathode in a flat panel display; or used to control surface emissivity, for example, as a coating on an insulating material such as vertical wall supports in flat panel displays.

  3. Structure, Magnetism, and Transport of CuCr2Se4 Thin Films

    E-Print Network [OSTI]

    2008-01-01T23:59:59.000Z

    Structure, Magnetism, and Transport of CuCr 2 Se 4 Thindichroism shows that the magnetism persists to the surfacesuch as the nature of magnetism at surfaces and interfaces.

  4. Attosecond Resolution Timing Jitter Characterization of Diode Pumped Femtosecond Cr:Lisaf Lasers

    E-Print Network [OSTI]

    Demirbas, Umit

    Two diode pumped Cr:LiSAF lasers are synchronized using a balanced nonlinear optical cross correlator. An integrated timing jitter of less than 156 as in the 10 kHz to 10 MHz range is measured.

  5. Cr(VI) reduction in aqueous solutions by using copper smelter slag

    SciTech Connect (OSTI)

    Kiyak, B.; Oezer, A.; Altundogan, H.S.; Erdem, M.; Tuemen, F. (Firat Univ., Elazig (Turkey))

    1999-01-01T23:59:59.000Z

    The ability of Copper Smelter Slag (CSS) to reduce Cr(VI) in aqueous solutions has been investigated. The extent of reduction if dependent on the amounts of acid and reductant, contact time, Cr(VI) concentration, temperature of the solution and particle size of CSS. The amount of acid is the most important variable affecting the reduction process. When twice the amount of acid required with respect to Cr(VI) was used, Cr(VI) in 100 ml solution (100 mg/l) was completely reduced in a contact period less than 5 min by a 10 g/l dosage of CSS. Reduction efficiency increased with increase in temperature of solution, showing that the process is endothermic. Reduced chromium, and iron and other metals dissolved from CSS were effectively precipitated by using NaOH or calcinated carbonation sludge from sugar plant.

  6. Cr(VI) reduction in aqueous solutions by using copper smelter slag

    SciTech Connect (OSTI)

    Kiyak, B.; Oezer, A.; Altundogan, H.S.; Erdem, M.; Tuemen, F. [Firat Univ., Elazig (Turkey)] [Firat Univ., Elazig (Turkey)

    1999-11-01T23:59:59.000Z

    The ability of Copper Smelter Slag (CSS) to reduce Cr(VI) in aqueous solutions has been investigated. The extent of reduction if dependent on the amounts of acid and reductant, contact time, Cr(VI) concentration, temperature of the solution and particle size of CSS. The amount of acid is the most important variable affecting the reduction process. When twice the amount of acid required with respect to Cr(VI) was used, Cr(VI) in 100 ml solution (100 mg/l) was completely reduced in a contact period less than 5 min by a 10 g/l dosage of CSS. Reduction efficiency increased with increase in temperature of solution, showing that the process is endothermic. Reduced chromium, and iron and other metals dissolved from CSS were effectively precipitated by using NaOH or calcinated carbonation sludge from sugar plant.

  7. Event-by-event study of CR composition with the SPHERE experiment using the 2013 data

    E-Print Network [OSTI]

    Antonov, R A; Bonvech, E A; Chernov, D V; Dzhatdoev, T A; Finger, Mich; Finger, Mir; Galkin, V I; Podgrudkov, D A; Roganova, T M

    2015-01-01T23:59:59.000Z

    We present an event-by-event study of cosmic ray (CR) composition with the reflected Cherenkov light method. The fraction of CR light component above 5 PeV was reconstructed using the 2013 run data of the SPHERE experiment which observed optical Vavilov-Cherenkov radiation of extensive air showers, reflected from snow surface of Lake Baikal. Additionally, we discuss a possibility to improve the elemental groups separability by means of multidimensional criteria.

  8. PVD synthesis and high-throughput property characterization of Ni?Fe?Cr alloy libraries

    SciTech Connect (OSTI)

    Rar, A.; Frafjord, J.J.; Fowlkes, Jason D.; Specht, E.D.; Rack, P.D.; Santella, M.L.; Bei, H.; George, E.P.; Pharr, G.M. (Tennessee-K); (Tennessee-K); (ORNL)

    2010-11-10T23:59:59.000Z

    Three methods of alloy library synthesis, thick-layer deposition followed by interdiffusion, composition-spread codeposition and electron-beam melting of thick deposited layers, have been applied to Ni-Fe-Cr ternary and Ni-Cr binary alloys. Structural XRD mapping and mechanical characterization by means of nanoindentation have been used to characterize the properties of the libraries. The library synthesis methods are compared from the point of view of the structural and mechanical information they can provide.

  9. Microstructure and Mechanical Property Studies on Neutron-Irradiated Ferritic Fe-Cr Model Alloys

    SciTech Connect (OSTI)

    Jian Gan; Maria Okuniewski; Wei-Ying Chen; Yinbin Miao; Carolyn A. Tomchik; James F. Stubbins; Y. Q. Wu; Stu A. Maloy

    2014-06-01T23:59:59.000Z

    Model Fe, Fe-10Cr and Fe-14Cr alloys were irradiated in Advanced Test Reactor at 300°C and 450°C to target doses of 0.01, 0.1 and 1 dpa. The microstructure and the mechanical property of irradiated specimens were investigated using TEM, APT and hardness measurements. The irradiation-induced hardening was consistent with the observed microstructures. For lower doses of 0.01 and 0.1 dpa, the formation of dislocation loops was the primarily contributor to the hardening; no a’ precipitates of resolvable sizes were observed. By 1 dpa, additional increase in hardening were attributed to the formation of a high density of 1-2 nm a' precipitates. In Fe, the hardness increased less as a function of irradiation dose compared to Fe-Cr alloys because of the lack of a' precipitation and differences in loop structures. Three single-parameter effects have been studied: the Cr content, the irradiation temperature and the grain size. The addition of Cr reduced the mobility of both ½<111> and <100> dislocation loops, leading to a smaller loop size and higher loop density. Also, the Cr contents were positively correlated to the density of a' precipitates, but were less relevant to the precipitate size. Higher irradiation temperature of 450°C resulted in a preferential production of the immobile <100> loops over the mobile ½<111> loops (ex. a ratio of 8:1 in Fe-10Cr irradiated 450°C to 0.01 dpa). At lower temperature of 300°C, heterogeneous formation of dislocation loops at the vicinity of line dislocations frequently. In Fe, the development of dislocation loops was suppressed (compared to Fe-Cr alloys) due to a combination of smaller grain size, high initial dislocation density and high defect mobility.

  10. Influences of Water Vapor on Cr(VI) Reduction by Gaseous Hydrogen

    E-Print Network [OSTI]

    Deng, Baolin

    Columbia, Columbia, Missouri 65211 In Situ Gaseous Reduction (ISGR) using hydrogen sulfide (H2S) is a technology the contaminants, H2S, and various soil components. In this study, Cr(VI) reduction by gaseous H2S was examined under various relative humidities (0-96.7%), concentrations of Cr(VI) (127-475 µg/g of solid), and H2S

  11. Surface modification to improve fireside corrosion resistance of Fe-Cr ferritic steels

    DOE Patents [OSTI]

    Park, Jong-Hee (Clarendon Hills, IL); Natesan, Krishnamurti (Naperville, IL); Rink, David L. (Mokena, IL)

    2010-03-16T23:59:59.000Z

    An article of manufacture and a method for providing an Fe--Cr ferritic steel article of manufacture having a surface layer modification for corrosion resistance. Fe--Cr ferritic steels can be modified to enhance their corrosion resistance to liquid coal ash and other chemical environments, which have chlorides or sulfates containing active species. The steel is modified to form an aluminide/silicide passivating layer to reduce such corrosion.

  12. Heat treatment of NiCrFe alloy to optimize resistance to intergrannular stress corrosion

    DOE Patents [OSTI]

    Steeves, Arthur F. (Schenectady, NY); Bibb, Albert E. (Clifton Park, NY)

    1984-01-01T23:59:59.000Z

    A process of producing a NiCrFe alloy having a high resistance to stress corrosion cracking comprising heating a NiCrFe alloy to a temperature sufficient to enable the carbon present in the alloy body in the form of carbide deposits to enter into solution, rapidly cool the alloy body, and heat the cooled body to a temperature between 1100.degree. to 1500.degree. F. for about 1 to 30 hours.

  13. Optimizing Cr(VI) and Tc(VII) remediation through nano-scale biomineral engineering

    SciTech Connect (OSTI)

    Cutting, R. S.; Coker, V. S.; Telling, N. D.; Kimber, R. L.; Pearce, C. I.; Ellis, B.; Lawson, R; van der Laan, G.; Pattrick, R.A.D.; Vaughan, D.J.; Arenholz, E.; Lloyd, J. R.

    2009-09-09T23:59:59.000Z

    To optimize the production of biomagnetite for the bioremediation of metal oxyanion contaminated waters, the reduction of aqueous Cr(VI) to Cr(III) by two biogenic magnetites and a synthetic magnetite was evaluated under batch and continuous flow conditions. Results indicate that nano-scale biogenic magnetite produced by incubating synthetic schwertmannite powder in cell suspensions of Geobacter sulfurreducens is more efficient at reducing Cr(VI) than either biogenic nano-magnetite produced from a suspension of ferrihydrite 'gel' or synthetic nano-scale Fe{sub 3}O{sub 4} powder. Although X-ray Photoelectron Spectroscopy (XPS) measurements obtained from post-exposure magnetite samples reveal that both Cr(III) and Cr(VI) are associated with nanoparticle surfaces, X-ray Magnetic Circular Dichroism (XMCD) studies indicate that some Cr(III) has replaced octahedrally coordinated Fe in the lattice of the magnetite. Inductively Coupled Plasma-Atomic Emission Spectrometry (ICP-AES) measurements of total aqueous Cr in the associated solution phase indicated that, although the majority of Cr(III) was incorporated within or adsorbed to the magnetite samples, a proportion ({approx}10-15 %) was released back into solution. Studies of Tc(VII) uptake by magnetites produced via the different synthesis routes also revealed significant differences between them as regards effectiveness for remediation. In addition, column studies using a {gamma}-camera to obtain real time images of a {sup 99m}Tc(VII) radiotracer were performed to visualize directly the relative performances of the magnetite sorbents against ultra-trace concentrations of metal oxyanion contaminants. Again, the magnetite produced from schwertmannite proved capable of retaining more ({approx}20%) {sup 99m}Tc(VII) than the magnetite produced from ferrihydrite, confirming that biomagnetite production for efficient environmental remediation can be fine-tuned through careful selection of the initial Fe(III) mineral substrate supplied to Fe(III)-reducing bacteria.

  14. Determination of mechanical properties of Ni-Cr-P amorphous alloys 

    E-Print Network [OSTI]

    Kondlapudi, Swaroop Kumar R

    1991-01-01T23:59:59.000Z

    unstable as they tend to relax to a more stable state. An amorphous alloy becomes fully stable only when it crystallizes. Metallic glasses are generally produced by the melt- spinning process. In this process a molten alloy stream impinging on a... materials of Ni~P, CrP, Ni and Cr powders and then produced in the amorphous phase using the melt-spinner. The density, crystallization temperatures, microhardness, tensile fracture strength and dynamic Young's modulus were determined so...

  15. Oxidation behavior of arc evaporated Al-Cr-Si-N thin films

    SciTech Connect (OSTI)

    Tritremmel, Christian; Daniel, Rostislav; Mitterer, Christian; Mayrhofer, Paul H.; Lechthaler, Markus; Polcik, Peter [Christian Doppler Laboratory for Advanced Hard Coatings, Department of Physical Metallurgy and Materials Testing, Montanuniversitaet Leoben, Franz-Josef-Strasse 18, A-8700 Leoben (Austria); Christian Doppler Laboratory for Application Oriented Coating Development, Department of Physical Metallurgy and Materials Testing, Montanuniversitaet Leoben, Franz-Josef-Strasse 18, A-8700 Leoben (Austria); OC Oerlikon Balzers AG, Iramali 18, LI-9496 Balzers (Liechtenstein); PLANSEE Composite Materials GmbH, Siebenbuergerstrasse 23, D-86983 Lechbruck am See (Germany)

    2012-11-15T23:59:59.000Z

    The impact of Al and Si on the oxidation behavior of Al-Cr-(Si)-N thin films synthesized by arc evaporation of powder metallurgically prepared Al{sub x}Cr{sub 1-x} targets with x = Al/(Al + Cr) of 0.5, 0.6, and 0.7 and (Al{sub 0.5}Cr{sub 0.5}){sub 1-z}Si{sub z} targets with Si contents of z = 0.05, 0.1, and 0.2 in N{sub 2} atmosphere was studied in detail by means of differential scanning calorimetry, thermogravimetric analysis (TGA), x-ray diffraction, and Raman spectroscopy. Dynamical measurements in synthetic air (up to 1440 Degree-Sign C) revealed the highest onset temperature of pronounced oxidation for nitride coatings prepared from the Al{sub 0.4}Cr{sub 0.4}Si{sub 0.2} target. Isothermal TGA at 1100, 1200, 1250, and 1300 Degree-Sign C highlight the pronounced improvement of the oxidation resistance of Al{sub x}Cr{sub 1-x}N coatings by the addition of Si. The results show that Si promotes the formation of a dense coating morphology as well as a dense oxide scale when exposed to air.

  16. A First-principles Study onA First-principles Study on Fe Substituted CrFe Substituted Cr2323CC66

    E-Print Network [OSTI]

    Cambridge, University of

    halpy of FeCr22C6. #12;Creep Resistant Steel Steam Power Plant Efficiency ~42 % Goal Efficiency 45 common power plant steels (MTDAT A, SGTE database, 565 °C) [Bhadeshia, 2001] M23C6 in Power Plant Steels % Anticipated efficiency improvements for changes in pow er plant operating conditions [Wachter and Ennis, 1995

  17. Stephan Klemme Hugh St.C. O'Neill The reaction MgCr2O4 + SiO2 = Cr2O3 + MgSiO3 and the free energy

    E-Print Network [OSTI]

    bar and 298 K (J molA1 ) DG Gibbs free energy change for a reaction among pure end membersStephan Klemme á Hugh St.C. O'Neill The reaction MgCr2O4 + SiO2 = Cr2O3 + MgSiO3 and the free energy of formation of magnesiochromite (MgCr2O4) Received: 9 May 1997 / Accepted: 28 July 1997 Abstract

  18. Comparative studies of etching mechanisms of CR-39 in NaOH/H2O and NaOH/ethanol

    E-Print Network [OSTI]

    Yu, K.N.

    Comparative studies of etching mechanisms of CR-39 in NaOH/H2O and NaOH/ethanol K.C.C. Tse, D Avenue, Kowloon Tong, Hong Kong Available online 13 May 2007 Abstract The bulk etch rate for CR-39 in NaOH/ethanol accumulates on the surface of CR-39 detector during etching in NaOH/ethanol, which is absent during etching

  19. Void swelling in binary Fe-Cr alloys at 200 dpa

    SciTech Connect (OSTI)

    Gelles, D.S. [Pacific Northwest Lab., Richland, WA (United States)

    1994-09-01T23:59:59.000Z

    Microstructural examinations have been performed on a series of binary Fe-Cr alloys irradiated in the FFTF/MOTA at 425{degrees}C to 200 dpa. The data represent the highest swelling levels reported in neutron irradiated ferritic alloys. The alloy compositions ranged from 3% to 18% Cr in 3% Cr increments, and the irradiation temperature corresponded to the peak swelling condition for this alloy class. Density measurements showed swelling levels as high as 7.4%, with the highest swelling found in the Fe-9Cr and Fe-6Cr alloys. Microstructural examinations revealed that the highest swelling conditions contained well-developed voids, often as large as 100 nm, and a dislocation network comprised of both a/2<111> and a<100> Burgers vectors. Swelling was lower in the other alloys, and the swelling reduction could be correlated with increased precipitation. These results are considered in light of the current theories for low swelling in ferritic alloys, but no theory is available to completely explain the results.

  20. Void swelling in binary Fe-Cr alloys at 200 DPA

    SciTech Connect (OSTI)

    Gelles, D.S.

    1994-06-01T23:59:59.000Z

    Microstructural examinations have been performed on a series of binary Fe-Cr alloys irradiated in the FFTF/MOTA at 425C to 200 dpa. The data represent the highest swelling levels reported in neutron irradiated ferritic alloys. The alloy compositions ranged from 3 to 18% Cr in 3% Cr increments, and the irradiation temperature corresponded to the peak swelling condition for this alloy class. Density measurements showed swelling levels as high as 7.4%, with the highest swelling found in the Fe-9Cr and Fe-6Cr alloys. Microstructural examinations revealed that the highest swelling conditions contained well-developed voids, often as large as 100 nm, and a dislocation network comprised of both {sub 2}{sup a}<111> and a<100> Burgers vectors. Swelling was lower in the other alloys, and the swelling reduction could be correlated with increased precipitation. These results are considered in light of current theories for low swelling in ferritic alloys, but no theory is available to completely explain the results.

  1. Reduced-activation austenitic stainless steels: The Fe--Mn--Cr--C system

    SciTech Connect (OSTI)

    Klueh, R.L.; Maziasz, P.J.

    1988-01-01T23:59:59.000Z

    Nickel-free manganese-stabilized steels are being developed for fusion-reactor applications. As the first part of this effort, the austenite-stable region in the Fe--Mn--Cr--C system was determined. Results indicated that the Schaeffler diagram developed for Fe--Ni--Cr--C alloys cannot be used to predict the constituents expected for high-manganese steels. This is true because manganese is not as strong an austenite stabilizer relative to delta-ferrite formation as predicted by the diagram, but it is a stronger austenite stabilizer relative to martensite than predicted. Therefore, the austenite-stable region for Ne--Mn--Cr--C alloys occurs at lower chromium and hugher combinations of manganese and carbon than predicted by the Schaeffler diagram. Development of a manganese-stabilized stainless steel should be possible in the composition range of 20 to 25% Mn, 10 to 15% Cr, and 0.01 to 0.25%C. Tensile behavior of an Fe--20%Mn--12%Cr--0.25%C alloy was determined. The strength and ductility of this possible base composition was comparable to type 316 stainless steel in both the solution-annealed and cold-worked condition.

  2. FuelCon AG | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluating A PotentialJumpGermanFife EnergyFreight BestFuel Cell ControlCellsFuelFuelCon

  3. GasCon | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluating A PotentialJumpGermanFifeGEXAGarnet VRX sro Jump to: navigation, searchGasCon

  4. Property:Oth cons | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag Jump to: navigation,ProjectStartDateProperty EditResultsUtility Jump to:Oth cons

  5. ConEdison Solutions | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty EditCalifornia:PowerCER.png ElColumbia,2005) | Open(Thompson,2006)airConEdison

  6. Property:Ind cons | Open Energy Information

    Open Energy Info (EERE)

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

  7. Response of 9Cr-ODS Steel to Proton Irradiation at 400 °C

    SciTech Connect (OSTI)

    Jianchao He; Farong Wan; Kumar Sridharan; Todd R. Allen; A. Certain; Y. Q. Wu

    2014-09-01T23:59:59.000Z

    The stability of Y–Ti–O nanoclusters, dislocation structure, and grain boundary segregation in 9Cr-ODS steels has been investigated following proton irradiation at 400 °C with damage levels up to 3.7 dpa. A slight coarsening and a decrease in number density of nanoclusters were observed as a result of irradiation. The composition of nanoclusters was also observed to change with a slight increase of Y and Cr concentration in the nanoclusters following irradiation. Size, density, and composition of the nanoclusters were investigated as a function of nanocluster size, specifically classified to three groups. In addition to the changes in nanoclusters, dislocation loops were observed after irradiation. Finally, radiation-induced enrichment of Cr and depletion of W were observed at grain boundaries after irradiation.

  8. Clinch River - Environmental Restoration Program (CR-ERP) pilot study, ambient water toxicity

    SciTech Connect (OSTI)

    Simbeck, D.J.

    1997-06-01T23:59:59.000Z

    Clinch River - Environmental Restoration Program (CR-ERP) personnel and Tennessee Valley Authority (TVA) personnel conducted a pilot study during the week of April 22-29, 1993, prior to initiation of CR-ERP Phase II Sampling and Analysis activities as described in the Statement of Work (SOW) document. The organisms specified for testing were larval fathead minnows, Pimephales promelas, and the daphnid, Ceriodaphnia dubia. Surface water samples were collected by TVA Field Engineering personnel from Clinch River Mile 9.0 and Poplar Creek Kilometer 1.6 on April 21, 23, and 26. Samples were split and provided to the CR-ERP and TVA toxicology laboratories for testing. Exposure of test organisms to these samples resulted in no toxicity (survival, growth, or reproduction) to either species in testing conducted by TVA.

  9. Testing of welded 13% Cr grades martensitic stainless steels for sour service applications

    SciTech Connect (OSTI)

    Rogne, T.; Bjordal, M. [SINTEF Materials Technology, Trondheim (Norway)

    1997-08-01T23:59:59.000Z

    The application of 13% Cr grade stainless steels is increasing mainly due to the introduction of higher alloyed and weldable grades with carbon content as low as 0.01 %, and the very favorable costs compared to alternative materials as the 22Cr duplex stainless steel. Therefore these steels now have been subject to a major evaluation for transport of oil and gas offshore in the North Sea. This paper discusses aspects of testing required to assess their corrosion properties and their susceptibility to environment assisted cracking (EAC), caused by both H{sub 2}S internally and cathodic protection externally. Testing is discussed with emphasis on test parameters for welded 13% Cr steel using different types of consumables.

  10. The Effect of Water Vapor on Cr Depletion in Advanced Recuperator Alloys

    SciTech Connect (OSTI)

    Pint, Bruce A [ORNL

    2005-01-01T23:59:59.000Z

    Durable alloy foils are needed for gas turbine recuperators operating at 650--700 C. It has been established that water vapor in the exhaust gas causes more rapid consumption of Cr in austenitic stainless steels leading to a reduction in operating lifetime of these thin-walled components. Laboratory testing at 650--800 C of commercial and model alloys is being used to develop a better understanding of the long-term rate of Cr consumption in these environments. Results are presented for commercial alloys 709, 120 and 625. After 10,000h exposures at 650 C and 700 C in humid air, grain boundary Cr depletion was observed near the surface of all these materials. In the Fe-base alloys, 709 and 120, this depletion led to localized Fe-rich nodule formation. This information then can be used to develop low-cost alternatives to currently available candidate materials.

  11. Energy Star program benefits Con Edison

    SciTech Connect (OSTI)

    NONE

    1995-05-01T23:59:59.000Z

    Impressed with savings in energy costs achieved after upgrading the lighting and air conditioning systems at its Manhattan headquarters, Home Box Office (HBO) wanted to do more, James Flock, vice president for computer and office systems, contacted Con Edison Co. of New York in March 1991 to determine what the company could do to save money by reducing energy consumed by personal computers. Arthur Kressner, Con Edison Research and Development manager contacted industry organizations and manufacturers for advice, but was told only to shut off computers at night and on weekends. Kressner arranged a series of meetings with IBM and the Electric Power Research Institute (EPRI) to discuss the issue, then approached the U.S. Environmental Protection Agency (EPA), which was designing a program to promote the introduction and use of energy-efficient office equipment. In 1992, the EPA announced the Energy Star program for PCs, enabling manufacturers to display the Energy Star logo on machines meeting program criteria, including the ability to enter a sleep mode in which neither the computer nor monitor consume more than 30 W or electricity. Industry experts estimate national energy consumption by office equipment could double by the year 2000, but Energy Star equipment is expected to improve efficiency and help maintain electric loads.

  12. Repassivation of 13% Cr steel dependent on brine pH

    SciTech Connect (OSTI)

    Skogsberg, J.W.; Walker, M.L.

    2000-02-01T23:59:59.000Z

    A joint laboratory project, involving an oil production and oil well service company, investigated repassivation of martensitic 13% Cr steel. The rate at which this alloy is repassivated after losing its protective passive oxide layer to hydrochloric acid (HCI) depended on the pH of the spent acid returns. Test samples of 13% Cr cut from oilfield tubing were subjected to a fluid sequence of (1) initial brine, (2) HCI, (3) spent acid, and (4) final brine. In 9 days, the samples regained their passive oxide layers. When spent acid was taken out of the fluid sequence, the samples regained passive oxide layers in 3 days.

  13. Anodonta imbecillis QA Test 4, Clinch River - Environmental restoration program (CR-ERP)

    SciTech Connect (OSTI)

    Simbeck, D.J.

    1997-06-01T23:59:59.000Z

    Toxicity testing of split whole sediment samples using juvenile freshwater mussels (Anodonta imbecillis) was conducted by TVA to provide a quality assurance mechanism for test organism quality and overall performance of the test being conducted by CR-ERP personnel as part of the CR-ERP biomonitoring study of Clinch River sediments. Testing of sediment samples collected September 8 from Poplar Creek Miles 6.0 and 1.0 was conducted September 13-22, 1994. Results from this test showed no toxicity (survival effects) to fresh-water mussels during a 9-day exposure to the sediments.

  14. Audit Report: CR-FS-96-03 | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed off Energy.gov. Are you0 ARRA NewslettersPartnership1/08 AttendanceCR-B-98-02 AuditCR-FS-96-03 Audit

  15. Audit Report: CR-B-99-01 | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny: The FutureComments from TarasaName Affiliation3 Audit Report: CR-B-95-03CR-B-99-01

  16. Changes induced in a ZnS:Cr-based electroluminescent waveguide structure by intrinsic near-infrared laser radiation

    SciTech Connect (OSTI)

    Vlasenko, N. A., E-mail: vlasenko@isp.kiev.ua; Oleksenko, P. F.; Mukhlyo, M. A.; Veligura, L. I. [National Academy of Sciences of Ukraine, Lashkarev Institute of Semiconductor Physics (Ukraine)] [National Academy of Sciences of Ukraine, Lashkarev Institute of Semiconductor Physics (Ukraine)

    2013-08-15T23:59:59.000Z

    The causes of changes that occur in a thin-film electroluminescent metal-insulator-semiconductor-insulator-metal waveguide structure based on ZnS:Cr (Cr concentration of {approx}4 Multiplication-Sign 10{sup 20} cm{sup -3}) upon lasing ({lambda} Almost-Equal-To 2.6 {mu}m) and that induce lasing cessation are studied. It is established that lasing ceases because of light-scattering inhomogeneities formed in the structure and, hence, optical losses enhance. The origin of the inhomogeneities and the causes of their formation are clarified by studying the surface topology and the crystal structure of constituent layers of the samples before and after lasing. The studies are performed by means of atomic force microscopy and X-ray radiography. It is shown that a substantial increase in the sizes of grains on the surface of the structure is the manifestation of changes induced in the ZnS:Cr film by recrystallization. Recrystallization is initiated by local heating by absorbed laser radiation in existing Cr clusters and quickened by a strong electric field (>1 MV cm{sup -1}). The changes observed in the ZnS:Cr film are as follows: the textured growth of ZnS crystallites, an increase in the content of Cr clusters, and the appearance of some CrS and a rather high ZnO content. Some ways for improving the stability of lasing in the ZnS:Cr-based waveguide structures are proposed.

  17. Effect of Elastic Stress on Phase Separation in Fe-20%Cr-6%Al-0.5%Ti ODS alloy

    E-Print Network [OSTI]

    Cambridge, University of

    Effect of Elastic Stress on Phase Separation in Fe- 20%Cr-6%Al-0.5%Ti ODS alloy C. Capdevila1, M. K Aldazabal from CEIT; and Monica Campos from Carlos III University (UC3) for their help with ODS for nuclear applications Acknowledgements Effect of Elastic Stress on Phase Separation in Fe-Cr-Al-Ti ODS alloy by C

  18. Understanding the solidification and microstructure evolution during CSC-MIG welding of Fe–Cr–B-based alloy

    SciTech Connect (OSTI)

    Sorour, A.A., E-mail: ahmad.sorour@mail.mcgill.ca; Chromik, R.R., E-mail: richard.chromik@mcgill.ca; Gauvin, R., E-mail: raynald.gauvin@mcgill.ca; Jung, I.-H., E-mail: in-ho.jung@mcgill.ca; Brochu, M., E-mail: mathieu.brochu@mcgill.ca

    2013-12-15T23:59:59.000Z

    The present is a study of the solidification and microstructure of Fe–28.2%Cr–3.8%B–1.5%Si–1.5%Mn (wt.%) alloy deposited onto a 1020 plain carbon steel substrate using the controlled short-circuit metal inert gas welding process. The as-solidified alloy was a metal matrix composite with a hypereutectic microstructure. Thermodynamic calculation based on the Scheil–Gulliver model showed that a primary (Cr,Fe){sub 2}B phase formed first during solidification, followed by an eutectic formation of the (Cr,Fe){sub 2}B phase and a body-centered cubic Fe-based solid solution matrix, which contained Cr, Mn and Si. Microstructure analysis confirmed the formation of these phases and showed that the shape of the (Cr,Fe){sub 2}B phase was irregular plate. As the welding heat input increased, the weld dilution increased and thus the volume fraction of the (Cr,Fe){sub 2}B plates decreased while other microstructural characteristics were similar. - Highlights: • We deposit Fe–Cr–B-based alloy onto plain carbon steel using the CSC-MIG process. • We model the solidification behavior using thermodynamic calculation. • As deposited alloy consists of (Cr,Fe){sub 2}B plates embedded in Fe-based matrix. • We study the effect of the welding heat input on the microstructure.

  19. Dual and Triple Ion-Beam Irradiations of Fe, Fe(Cr) and Fe(Cr)-ODS Final Report: IAEA SMoRE CRP

    SciTech Connect (OSTI)

    Fluss, M J; Hsiung, L L; Marian, J

    2011-11-20T23:59:59.000Z

    Structures of nanoparticles in Fe-16Cr-4.5Al-0.3Ti-2W-0.37Y2O3 (K3) and Fe-20Cr-4.5Al-0.34Ti-0.5Y2O3 (MA956) oxide dispersion strengthened (ODS) ferritic steels produced by mechanical alloying (MA) and followed by hot extrusion have been studied using high-resolution transmission electron microscopy (HRTEM) techniques to gain insight about the formation mechanism of nanoparticles in MA/ODS steels. The observations of Y-Al-O complex-oxide nanoparticles in both ODS steels imply that decomposition of Y2O3 in association with internal oxidation of Al occurred during mechanical alloying. While the majority of oxide nanoparticles formed in both steels is Y4Al2O9, a few oxide particles of YAlO3 are also occasionally observed. These results reveal that Ti (0.3 wt %) plays an insignificant role in forming oxide nanoparticles in the presence of Al (4.5 wt %). HRTEM observations of crystalline nanoparticles larger than {approx}2 nm and amorphous or disordered cluster domains smaller than {approx}2 nm provide an insight into the formation mechanism of oxide nanoparticle in MA/ODS steels, which we believe from our observations involves a solid-state amorphous precursor followed by recrystallization. Dual ion-beam irradiations using He{sup +} + Fe{sup +8} ions were employed to gain more detailed insight about the role of nanoparticles in suppressing radiation-induced swelling. This is elaborated through TEM examinations of cavity distributions in ion-irradiated Fe-14Cr and K3-ODS ferritic steels. HRTEM observations of helium-filled cavities (helium bubbles) preferably trapped at nanoscale oxide particles and clusters in ion-irradiated K3-ODS are presented. Finally, we describe the results from triple ion-beam irradiations using H{sup +} + He{sup +} + Fe{sup +8} ions to emulate fusion first wall radiation effects. Preliminary work is reported that confirms the existence of significant hydrogen synergistic effects described earlier by Tanaka et al., for Fe(Cr) and by Wakai et al., for F82H reduced activation ferritic martensitic (RAF/M) steel. These previous results combined with our data suggest a complex new 'catalytic' mechanism whereby H interacts with the steady state population of defects and the embryonic cavities so as to accelerated cavity (void) growth in both Fe(Cr) and under special conditions in ODS steels.

  20. Structural alterations in SiC as a result of Cr/sup +/ and N/sup +/ implantation

    SciTech Connect (OSTI)

    Williams, J.M.; McHargue, C.J.; Appleton, B.R.

    1982-01-01T23:59:59.000Z

    Ion scattering and channeling techniques were used to study production of disorder and randomization of SiC by implantation of Cr/sup +/ and N/sup +/ at doses of up to 3 x 10/sup 16/ /cm/sup 2/ for Cr/sup +/ and 8 x 10/sup 16/ /cm/sup 2/ for N/sup +/. Experiments were designed so that the calculated damage energy profiles would be well matched for the two ion species. The results were compared for the degree of effectiveness of Cr/sup +/ and N/sup +/ in producing disorder. At higher doses, Cr/sup +/ was much more effective than N/sup +/ for a given damage energy using the same calculational method for Cr/sup +/ as for N/sup +/. In correlated studies of swelling, both species had about the same effectiveness in producing swelling.

  1. Thermodynamic modelling of Cr-bearing garnets with implications for diamond inclusions and peridotite xenoliths

    E-Print Network [OSTI]

    , Zürich, Switzerland e Geological Survey of Western Australia, Mineral House, 100 Plain Street, East Perth, WA 6004, Australia a b s t r a c ta r t i c l e i n f o Article history: Received 8 September 2008 using free energy minimization techniques. Here we present calculated phase relations in Cr-rich mantle

  2. Magnetic anisotropy in Fe-25Cr-12Co-1Si alloy induced by external magnetic field

    E-Print Network [OSTI]

    Qin, Lu-Chang

    Magnetic anisotropy in Fe-25Cr-12Co-1Si alloy induced by external magnetic field ZHEN Liang( )1 of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China; 2. Department 27599-3255, USA Received 29 June 2006; accepted 15 January 2007 Abstract: Structural and magnetic

  3. Diode-Pumped Gigahertz Repetition Rate Femtosecond Cr:Lisaf Laser

    E-Print Network [OSTI]

    Li, Duo

    We report a low-cost, 1 GHz repetition-rate, diode-pumped, saturable Bragg reflectors mode-locked Cr:LiSAF laser, which generates nearly transform-limited 103-fs long pulses around 866 nm, with a record high peak power of 1.45 kW.

  4. Clostridium chromiireducens sp. nov., isolated from Cr(VI)-contaminated soil

    E-Print Network [OSTI]

    Florida, University of

    by its ability to reduce Cr(VI) in low concentrations. Mixed acid fermentation during growth on glucose resulted in accumulation of acetate, butyrate, formate and lactate. Morphological studies indicated the presence of peritrichous flagella, pili and an S-layer. The major cellular fatty acids (.5 %) were C16 : 0

  5. Transmission electron microscopy of oxide development on 9Cr ODS steel in supercritical water

    E-Print Network [OSTI]

    Motta, Arthur T.

    is on the ferritic­martensitic 9Cr ODS steel, which was originally developed by JAEA for use in sodium-cooled fast. Ó 2009 Elsevier B.V. All rights reserved. 1. Introduction The supercritical water reactor (SCWR) is one of the Generation- IV nuclear reactor concepts, currently being studied to help meet future

  6. Effect of Cr2O3 on the O-18 Tracer Incorporation in SOFC Materials...

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

    Gd0.10Ce0.90O2 (GDC), Y0.15Zr0.85O2 (YSZ) and La0.6Sr0.4Co0.2Fe0.8O2 (LSCF) sintered pellets were covered with 3 to 30 nm Cr - overlayers that were subsequently oxidized, forming...

  7. NASA/CR-2002-211637 ICASE Report No. 2002-12

    E-Print Network [OSTI]

    Muñoz, César A.

    Hanover, MD 21076-1320 #12;NASA/CR-2002-211637 ICASE Report No. 2002-12 y Air Traffic Conflict Resolution Hanover, MD 21076-1320 (301) 621-0390 National Technical Information Service (NTIS) 5285 Port Royal Road

  8. NASA/CR-2007-214546 NIA Report No. 2007-03

    E-Print Network [OSTI]

    Muñoz, César A.

    Space Information 7115 Standard Drive Hanover, MD 21076-1320 #12;NASA/CR-2007-214546 NIA Report No. 2007-03 Batch 5285 Port Royal Road Hanover, MD 21076-1320 Springfield, VA 22161-2171 (301) 621-0390 (703) 605

  9. Limitations for the application of 13Cr steel in oil and gas production environments

    SciTech Connect (OSTI)

    Huizinga, S.; Liek, W.E. [Shell International Oil Products BV, Amsterdam (Netherlands). Shell Research and Technology Centre

    1997-08-01T23:59:59.000Z

    A laboratory investigation of application limits of 13Cr steel was carried out for sweet downhole environments in the CO{sub 2} partial pressure regime up to about 10 bar (1 MPa). Two grades of 13Cr steel were studied, one complying with the API 5CT specification and the other a higher carbon version. Polarization curves, taken at various times after immersion of the specimens in simulated brine, revealed an increasing pitting tendency for the higher chloride levels and indicated better performance for the API 5CT grade. This was in agreement with evidence for chromium depleted zones in the higher carbon grade, obtained from polarization curves in sulfuric acid. Weight loss exposure tests, in which the corrosion rate was also monitored by polarization resistance measurements, were performed at temperatures of 100 and 125 C and supplemented with literature data to extend the temperature range. A mathematical formula was derived to describe the corrosion rate as a function of temperature and chloride content. For instance, if 0.1 mm/y is taken as an acceptable corrosion rate, 13Cr steel could be applied up to 125 C in the presence of 150 g/L Cl{sup {minus}}. In the exposure tests, the API 5CT 13Cr steel did not show pitting at the 0.1 mm/y boundary but the higher carbon grade did suffer from this form of attack.

  10. CREEP STRENGTH OF HIGH CR FERRITIC STEELS DESIGNED USING NEURAL NETWORKS AND PHASE STABILITY CALCULATIONS

    E-Print Network [OSTI]

    Cambridge, University of

    on experience and test results of creep data obtained after long-term creep tests for several years or moreCREEP STRENGTH OF HIGH CR FERRITIC STEELS DESIGNED USING NEURAL NETWORKS AND PHASE STABILITY of Materials Science and Metallurgy Pembroke Street, Cambridge CB2 3QZ, U.K. Abstract The highest creep rupture

  11. advanced corrosion-resistant fe-cr-ni: Topics by E-print Network

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

    advanced corrosion-resistant fe-cr-ni First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 NUCLEAR...

  12. Long-term measurements of equilibrium factor with electrochemically etched CR-39 SSNTD

    E-Print Network [OSTI]

    Yu, K.N.

    .60 Keywords: Radon progeny concentration; Equilibrium factor; CR-39 1. Introduction Inhaled radon (222 Rn cancer [3]. Methods for long-term monitoring of the concentrations of radon progeny, or the equilibrium factor (which surro- gates the ratios of concentrations of radon progeny to the concentration of the 222

  13. Relation between thermal expansion and interstitial formation energy in pure Fe and Cr

    E-Print Network [OSTI]

    Relation between thermal expansion and interstitial formation energy in pure Fe and Cr Janne potentials give lower interstitial formation energy, but predict too small thermal expansion. We also show University, Uppsala, Sweden Abstract By fitting a potential of modified Finnis­Sinclair type to the thermal

  14. Investigations of HRC®-Stimulated Bioreduction of Cr(VI) at Hanford 100H

    SciTech Connect (OSTI)

    T.C. Hazen; B. Faybishenko; D. Joyner; S. Borglin; E.Brodie; S. Hubbard; K. Williams; J. Peterson; J. Wan; T. Tokunaga; Long, P.E.; Newcomer, D.; Koenigsberg, S.; Willet, A.

    2005-04-18T23:59:59.000Z

    Hypothesis: Lactate (Hydrogen Release Compound-HRC{trademark}) injection into chromium contaminated groundwater through an injection well will cause indirect or direct bioreduction of chromate [Cr(VI)] and precipitation of insoluble species of [Cr(III)] on soil particles, probably catalyzed at oxide surfaces, at the field scale. Objective: Assess the potential for immobilizing and detoxifying chromium-contaminated groundwater using lactate-stimulated bioreduction of Cr(VI) to Cr(III) at the Hanford Site's 100-H Area field site. Types of Research: A three-well system (injection well and upgradient and downgradient monitoring wells) was used for conducting the in situ biostimulation and monitoring. To assess the pre- and post-injection test groundwater conditions, we used an integrated monitoring approach, involving hydraulic, geochemical, microbial, and geophysical techniques and analytical methods, as well as conducted five Br-tracer injection tests and four pumping tests (concurrently with the Br-tracer tests). Groundwater biostimulation was conducted by injection of 40 lbs of {sup 13}C-labeled HRC into the injection well (over the depth interval from 44-50 ft) on 8/3/2004, followed by low-flow pumping (1.2 to 2.5 l/min) through the downgradient well (to ensure capture of groundwater flow lines passing through the injection well) for 27 days. Main Results: Although the total microbial population in sediments is relatively low (<10{sup 5} cells g-1) under background conditions, which is likely insufficient for direct enzymatic Cr(VI) reduction, several types of bacteria, e.g., Bacillus/Arthrobacter and Geobacter, are present in the Hanford sediments, which are known to reduce or sorb hexavalent chromium. The HRC injection stimulated microbial cell counts to reach the maximum of 2 x 10{sup 7} cells g{sup -1} 13-17 days after the injection, and generated highly reducing conditions. Geochemical and isotopic observations confirmed microbial metabolism of HRC. The Cr(VI) concentration in the monitoring and pumping wells decreased below drinking water minimum contaminant limits and remained below background concentrations even after 1.5 years, when redox conditions and microbial densities had returned to background levels. Fe(II) levels have remained high and may account for the continued reduction of Cr(VI).

  15. Investigations of HRC®-Stimulated Bioreduction of Cr(VI) at Hanford 100H

    SciTech Connect (OSTI)

    Hazen, T.C.; Faybishenko, B.; Joyner, D.; Borglin, S.; Brodie, E.; Hubbard, S.; Williams, K.; Peterson, J.; Wan, J.; Tokunaga, T.; Firestone, M.; Long, P.E.; Resch, C.T.; Cantrell, K.; Newcomer, D.; Koenigsberg, S.; Willet, A.

    2006-04-05T23:59:59.000Z

    Hypothesis: Lactate (Hydrogen Release Compound-HRC{trademark}) injection into chromium contaminated groundwater through an injection well will cause indirect or direct bioreduction of chromate [Cr(VI)] and precipitation of insoluble species of [Cr(III)] on soil particles, probably catalyzed at oxide surfaces, at the field scale. Objective: Assess the potential for immobilizing and detoxifying chromium-contaminated groundwater using lactate-stimulated bioreduction of Cr(VI) to Cr(III) at the Hanford Site's 100-H Area field site. Types of Research: A three-well system (injection well and upgradient and downgradient monitoring wells) was used for conducting the in situ biostimulation and monitoring. To assess the pre- and post-injection test groundwater conditions, we used an integrated monitoring approach, involving hydraulic, geochemical, microbial, and geophysical techniques and analytical methods, as well as conducted five Br-tracer injection tests and four pumping tests (concurrently with the Br-tracer tests). Groundwater biostimulation was conducted by injection of 40 lbs of {sup 13}C-labeled HRC into the injection well (over the depth interval from 44-50 ft) on 8/3/2004, followed by low-flow pumping (1.2 to 2.5 l/min) through the downgradient well (to ensure capture of groundwater flow lines passing through the injection well) for 27 days. Main Results: Although the total microbial population in sediments is relatively low (<10{sup 5} cells g{sup -1}) under background conditions, which is likely insufficient for direct enzymatic Cr(VI) reduction, several types of bacteria, e.g., Bacillus/Arthrobacter and Geobacter, are present in the Hanford sediments, which are known to reduce or sorb hexavalent chromium. The HRC injection stimulated microbial cell counts to reach the maximum of 2 x 10{sup 7} cells g{sup -1} 13-17 days after the injection, and generated highly reducing conditions. Geochemical and isotopic observations confirmed microbial metabolism of HRC. The CR(VI) concentration in the monitoring and pumping wells decreased below drinking water minimum contaminant limits and remained below background concentrations even after 1.5 years, when redox conditions and microbial densities had returned to background levels. Fe(II) levels have remained high and may account for the continued reduction of Cr(VI).

  16. Originally presented at Photomask Japan '94, Kanagawa Science Park, April, 1994 Attenuated phase-shifting photomasks fabricated from Cr-based embedded shifter blanks

    E-Print Network [OSTI]

    Rollins, Andrew M.

    the cathode powers and gas mixture. Cr-based films' flexible properties are suitable for several applications

  17. El teatro como reflexión colectiva: Conversación con Sergio Corrieri

    E-Print Network [OSTI]

    Luzuriaga, Gerardo

    1983-04-01T23:59:59.000Z

    azarosa. Y aun así y todo, para poder lograr una entrada mínima que les permitiera subsistir apenas, pues tenían que recurrir a un repertorio comercial, vodevilesco, en base a chistes verdes. En fin, sin ningún propósito cultural ni social. Algunos... poner en Cuba algún clásico, la vanguardia francesa, las obras de Anouilh, el Ionesco de aquel entonces, con una resonancia social paupérrima, es decir un público bien escaso. Además de esto, un teatro universitario con una función muy académica, con...

  18. aleatorizado con una: Topics by E-print Network

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

    estremamente variabili. La complessit, (more) MILAZZO, ROSARIO 2014-01-01 365 Operaciones de conjuntos con Fas Dr. Luis A. Pineda Computer Technologies and Information...

  19. alimentados con complementos: Topics by E-print Network

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

    Theses and Dissertations Summary: ??Benavides Tamayo , Helman Enrique (2013) Protocolo de investigacion: Prevalencia de tuberculosis latente en pacientes con diabetes mellitus en...

  20. adicionados con una: Topics by E-print Network

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

    estremamente variabili. La complessit, (more) MILAZZO, ROSARIO 2014-01-01 364 Operaciones de conjuntos con Fas Dr. Luis A. Pineda Computer Technologies and Information...

  1. alimentados con una: Topics by E-print Network

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

    estremamente variabili. La complessit, (more) MILAZZO, ROSARIO 2014-01-01 365 Operaciones de conjuntos con Fas Dr. Luis A. Pineda Computer Technologies and Information...

  2. alimentos fortificados con: Topics by E-print Network

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

    Theses and Dissertations Summary: ??Benavides Tamayo , Helman Enrique (2013) Protocolo de investigacion: Prevalencia de tuberculosis latente en pacientes con diabetes mellitus en...

  3. asociada con factores: Topics by E-print Network

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

    Asked Questions ? Do government buildings qualify for the C&I Program? ? State, County, and local government...1 Con Edison Commercial and Industrial Energy Efficiency...

  4. area visual con: Topics by E-print Network

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

    Fernndez de Crdoba, Pedro 8 ConMan: A Visual Programming Language for Interactive Graphics CiteSeer Summary: Traditionally, interactive applications have been difficult to...

  5. adolescentes con fobia: Topics by E-print Network

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

    Gilbes Santaella Departamento EN LA TIERRA 12;HIDROELECTRICIDAD Es una fuente de energia renovable con la cual se genera electricidad de fuentes renovables (estimado del 2005)....

  6. acuosas con agarosa: Topics by E-print Network

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

    Gilbes Santaella Departamento EN LA TIERRA 12;HIDROELECTRICIDAD Es una fuente de energia renovable con la cual se genera electricidad de fuentes renovables (estimado del 2005)....

  7. adicionales con implicaciones: Topics by E-print Network

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

    Britannica Online Discovery Streaming Topic Comparison ProCon.org CiteSeer Summary: aka proscons "We promote critical thinking, education, and informed citizenship by presenting...

  8. Single-Cell Imaging and Spectroscopic Analyses of Cr(VI) Reduction on the Surface of Bacterial Cells

    SciTech Connect (OSTI)

    Wang, Yuanmin; Sevinc, Papatya C.; Belchik, Sara M.; Fredrickson, Jim K.; Shi, Liang; Lu, H. Peter

    2013-01-22T23:59:59.000Z

    We investigate single-cell reduction of toxic Cr(VI) by the dissimilatory metal-reducing bacterium Shewanella oneidensis MR-1 (MR-1), an important bioremediation process, using Raman spectroscopy and scanning electron microscopy (SEM) combined with energy-dispersive X-ray spectroscopy (EDX). Our experiments indicate that the toxic and highly soluble Cr(VI) can be efficiently reduced to the less toxic and non-soluble Cr2O3 nanoparticles by MR-1. Cr2O3 is observed to emerge as nanoparticles adsorbed on the cell surface and its chemical nature is identified by EDX imaging and Raman spectroscopy. Co-localization of Cr2O3 and cytochromes by EDX imaging and Raman spectroscopy suggests a terminal reductase role for MR-1 surface-exposed cytochromes MtrC and OmcA. Our experiments revealed that the cooperation of surface proteins OmcA and MtrC makes the reduction reaction most efficient, and the sequence of the reducing reactivity of the MR-1 is: wild type > single mutant @mtrC or mutant @omcA > double mutant (@omcA-@mtrC). Moreover, our results also suggest that the direct microbial Cr(VI) reduction and Fe(II) (hematite)-mediated Cr(VI) reduction mechanisms may co-exist in the reduction processes.

  9. Structural Properties of the Cr(III)-Fe(III) (Oxy)Hydroxide Compositional Series: Insights for a Nanomaterial “Solid Solution”

    SciTech Connect (OSTI)

    Tang, Y.; Zhang, L.; Michel, F.M.; Harrington, R.; Parise, J.B.; Reeder, R.J.

    2010-05-28T23:59:59.000Z

    Chromium(III) (oxy)hydroxide and mixed Cr(III)-Fe(III) (oxy)hydroxides are environmentally important compounds for controlling chromium speciation and bioaccessibility in soils and aquatic systems and are also industrially important as precursors for materials and catalyst synthesis. However, direct characterization of the atomic arrangements of these materials is complicated because of their amorphous X-ray properties. This study involves synthesis of the complete Cr(III)-Fe(III) (oxy)hydroxide compositional series, and the use of complementary thermal, microscopic, spectroscopic, and scattering techniques for the evaluation of their structural properties. Thermal analysis results show that the Cr end member has a higher hydration state than the Fe end member, likely associated with the difference in water exchange rates in the first hydration spheres of Cr(III) and Fe(III). Three stages of weight loss are observed and are likely related to the loss of surface/structural water and hydroxyl groups. As compared to the Cr end member, the intermediate composition sample shows lower dehydration temperatures and a higher exothermic transition temperature. XANES analysis shows Cr(III) and Fe(III) to be the dominant oxidation states. XANES spectra also show progressive changes in the local structure around Cr and Fe atoms over the series. Pair distribution function (PDF) analysis of synchrotron X-ray total scattering data shows that the Fe end member is nanocrystalline ferrihydrite with an intermediate-range order and average coherent domain size of {approx}27 {angstrom}. The Cr end member, with a coherent domain size of {approx}10 {angstrom}, has only short-range order. The PDFs show progressive structural changes across the compositional series. High-resolution transmission electron microscopy (HRTEM) results also show the loss of structural order with increasing Cr content. These observations provide strong structural evidence of chemical substitution and progressive structural changes along the compositional series.

  10. Structural Properties of the Cr(III)-Fe(III) (Oxy)hydroxide Compositional Series: Insights for a Nanomaterial "Solid Solution"

    SciTech Connect (OSTI)

    Michel, Y.; Michel, F; Zhang, L; Harrington, R; Parise, J; Reeder, R

    2010-01-01T23:59:59.000Z

    Chromium(III) (oxy)hydroxide and mixed Cr(III)-Fe(III) (oxy)hydroxides are environmentally important compounds for controlling chromium speciation and bioaccessibility in soils and aquatic systems and are also industrially important as precursors for materials and catalyst synthesis. However, direct characterization of the atomic arrangements of these materials is complicated because of their amorphous X-ray properties. This study involves synthesis of the complete Cr(III)-Fe(III) (oxy)hydroxide compositional series, and the use of complementary thermal, microscopic, spectroscopic, and scattering techniques for the evaluation of their structural properties. Thermal analysis results show that the Cr end member has a higher hydration state than the Fe end member, likely associated with the difference in water exchange rates in the first hydration spheres of Cr(III) and Fe(III). Three stages of weight loss are observed and are likely related to the loss of surface/structural water and hydroxyl groups. As compared to the Cr end member, the intermediate composition sample shows lower dehydration temperatures and a higher exothermic transition temperature. XANES analysis shows Cr(III) and Fe(III) to be the dominant oxidation states. XANES spectra also show progressive changes in the local structure around Cr and Fe atoms over the series. Pair distribution function (PDF) analysis of synchrotron X-ray total scattering data shows that the Fe end member is nanocrystalline ferrihydrite with an intermediate-range order and average coherent domain size of 27 {angstrom}. The Cr end member, with a coherent domain size of 10 {angstrom}, has only short-range order. The PDFs show progressive structural changes across the compositional series. High-resolution transmission electron microscopy (HRTEM) results also show the loss of structural order with increasing Cr content. These observations provide strong structural evidence of chemical substitution and progressive structural changes along the compositional series.

  11. October 6, 1997 ITER L-Mode Con nement Database

    E-Print Network [OSTI]

    October 6, 1997 ITER L-Mode Con nement Database S.M. Kaye and the ITER Con nement Database Working Group Abstract This paper describes the content of an L-mode database that has been compiled with data, and Tore-Supra. The database consists of a total of 2938 entries, 1881 of which are in the L-phase while

  12. Clustering Iterativo de Textos Cortos con Representaciones basadas en Conceptos

    E-Print Network [OSTI]

    Rosso, Paolo

    Clustering Iterativo de Textos Cortos con Representaciones basadas en Conceptos Iterative enfoque utilizando representaciones de documentos enriquecidas con informaci´on sem´antica (conceptos´on sea f´acil- mente interpretada y utilizada de manera efectiva (categorizaci´on, clustering y sistemas

  13. Studies on the structural, electrical and magnetic properties of LaCrO{sub 3}, LaCr{sub 0.5}Cu{sub 0.5}O{sub 3} and LaCr{sub 0.5}Fe{sub 0.5}O{sub 3} by sol–gel method

    SciTech Connect (OSTI)

    Nithya, V.D.; Jacob Immanuel, R.; Senthilkumar, S.T. [Solid State Ionics and Energy Devices Laboratory, Department of Physics, Bharathiar University, Coimbatore 641 046 (India)] [Solid State Ionics and Energy Devices Laboratory, Department of Physics, Bharathiar University, Coimbatore 641 046 (India); Sanjeeviraja, C. [School of Physics, Alagappa University, Karaikudi 630 003 (India)] [School of Physics, Alagappa University, Karaikudi 630 003 (India); Perelshtein, I.; Zitoun, D. [Bar-Ilan Institute of Nanotechnology and Advanced Materials, Department of Chemistry, Bar-Ilan University, Ramat-Gan 52900 (Israel)] [Bar-Ilan Institute of Nanotechnology and Advanced Materials, Department of Chemistry, Bar-Ilan University, Ramat-Gan 52900 (Israel); Kalai Selvan, R., E-mail: selvankram@buc.edu.in [Solid State Ionics and Energy Devices Laboratory, Department of Physics, Bharathiar University, Coimbatore 641 046 (India)

    2012-08-15T23:59:59.000Z

    Highlights: ? LaCr{sub 0.5}M{sub 0.5}O{sub 3} (M = Cr{sup 3+}, Cu{sup 2+} and Fe{sup 3+}) was synthesized by simple sol–gel technique with subsequent heat treatment. ? The compound formation temperature was optimized through XRD analysis. ? The effects of Cu{sup 2+} and Fe{sup 3+} on the electrical properties of LaCrO{sub 3} were studied using impedance spectroscopy. ? The temperature dependence of electrical conductivity was discussed for LaCr{sub 0.5}Cu{sub 0.5}O{sub 3}. ? The magnetization was found to be enhanced in the LaCr{sub 0.5}Fe{sub 0.5}O{sub 3}. -- Abstract: The structural, electrical and magnetic properties of LaCr{sub 0.5}M{sub 0.5}O{sub 3} (M = Cr{sup 3+}, Cu{sup 2+} and Fe{sup 3+}) synthesized by a sol–gel technique were studied. The X-ray diffraction pattern shows the structure to be orthorhombic and the size of the particles is around 100 nm as seen from the TEM images. The effects of Cu{sup 2+} and Fe{sup 3+} on the electrical properties of LaCrO{sub 3} were studied using impedance spectroscopy at room temperature (RT). The properties of LaCr{sub 0.5}Cu{sub 0.5}O{sub 3} were studied over a wide range of temperature from RT to 533 K. A maximum conductivity of 1.7 × 10{sup ?3} S cm{sup ?1} was observed for LaCr{sub 0.5}Cu{sub 0.5}O{sub 3} at a measured temperature of 533 K. The impedance spectra indicate a negative temperature coefficient of resistance (NTCR) and also imply the conduction is through bulk of the material. The magnetic studies performed using a SQUID magnetometer interpret the antiferromagnetically ordered LaCrO{sub 3} to behave ferromagnetically on the addition of Cu{sup 2+} and Fe{sup 3+}, and the magnetization was found to be enhanced in the LaCr{sub 0.5}Fe{sub 0.5}O{sub 3}.

  14. Magnetization switching of rare earth orthochromite CeCrO{sub 3}

    SciTech Connect (OSTI)

    Cao, Yiming; Cao, Shixun, E-mail: sxcao@shu.edu.cn; Ren, Wei; Feng, Zhenjie; Yuan, Shujuan; Kang, Baojuan; Zhang, Jincang [Department of Physics, Shanghai University, Shanghai 200444 (China); Lu, Bo [Laboratory for Microstructures, Shanghai University, Shanghai 200444 (China)

    2014-06-09T23:59:59.000Z

    We report the synthesis of single phase rare earth orthochromite CeCrO{sub 3} and its magnetic properties. A canted antiferromagnetic transition with thermal hysteresis at T?=?260?K is observed, and a magnetic compensation (zero magnetization) near 133?K is attributed to the antiparallel coupling between Ce{sup 3+} and Cr{sup 3+} moments. At low temperature, field induced magnetization reversal starting from 43?K for H?=?1.2 kOe reveals the spin flip driven by Zeeman energy between the net moments and the applied field. These findings may find potential uses in magnetic switching devices such as nonvolatile magnetic memory which facilitates two distinct states of magnetization.

  15. Creep behavior of commercial FeCrAl foils: beneficial and detrimental effect of oxidation

    SciTech Connect (OSTI)

    Dryepondt, Sebastien N [ORNL; Pint, Bruce A [ORNL; Lara-Curzio, Edgar [ORNL

    2012-01-01T23:59:59.000Z

    Creep tests were performed at 875 and 1050 C on commercially available FeCrAl foils (~50 m, 2 mil thickness) over a wide range of stress and duration to characterize their creep behavior. The oxide scales formed on the creep specimens were analyzed and compared to those that formed on unstressed specimens to assess the effect of stress and strain on oxide growth mechanisms. Below a specific stress threshold, creep rate and lifetime become independent of the applied load and rupture occurs due to the onset of breakaway oxidation. A creep rate model based on the strengthening of the FeCrAl foils due to load-bearing by the thermally-grown alumina scale was observed to be in good agreement with the experimental results.

  16. Irradiation effects on base metal and welds of 9Cr-1Mo (EM10) martensitic steel

    SciTech Connect (OSTI)

    Alamo, A.; Seran, J.L.; Rabouille, O.; Brachet, J.C.; Maillard, A.; Touron, H.; Royer, J. [CEA Saclay, Gif-sur-Yvette (France)

    1996-12-31T23:59:59.000Z

    9Cr martensitic steels are being developed for core components (wrapper tubes) of fast breeder reactors as well as for fusion reactor structures. Here, the effects of fast neutron irradiation on the mechanical behavior of base metal and welds of 9Cr-1Mo (EM10) martensitic steel have been studied. Two types of weldments have been produced by TIG and electron beam techniques. Half of samples have been post-weld heat treated to produce a stress-relieved structure. The irradiation has been conducted in the Phenix reactor to doses of 63--65 dpa in the temperature range 450--459 C. The characterization of the welds, before and after irradiation, includes metallographic observations, hardness measurements, tensile and Charpy tests. It is shown that the mechanical properties of the welds after irradiation are in general similar to the characteristics obtained on the base metal, which is little affected by neutron irradiation.

  17. The MSFR as a flexible CR reactor: the viewpoint of safety

    SciTech Connect (OSTI)

    Fiorina, C.; Cammi, A. [Politecnico di Milano, Via La Masa 34, 20136 Milan (Italy); Franceschini, F. [Westinghouse Electric Company LL, 1000 Westinghouse Dr., Cranberry Township, PA 16066 (United States); Krepel, J. [Paul Scherrer Institut, PSI WEST, 5234 Villigen (Switzerland)

    2013-07-01T23:59:59.000Z

    In this paper, the possibility has first been discussed of using the liquid-fuelled Molten Salt Fast Reactor (MSFR) as a flexible conversion ratio (CR) reactor without design modification. By tuning the reprocessing rate it is possible to determine the content of fission products in the core, which in turn can significantly affect the neutron economy without incurring in solubility problems. The MSFR can thus be operated as U-233 breeder (CR>1), iso-breeder (CR=1) and burner reactor (CR<1). In particular a 40 year doubling time can be achieved, as well as a considerable Transuranics and MA (minor actinide) burning rate equal to about 150 kg{sub HN}/GWE-yr. The safety parameters of the MSFR have then been evaluated for different fuel cycle strategies. Th use and a softer spectrum combine to give a strong Doppler coefficient, one order of magnitude higher compared to traditional fast reactors (FRs). The fuel expansion coefficient is comparable to the Doppler coefficient and is only mildly affected by core compositions, thus assisting the fuel cycle flexibility of the MSFR. ?eff and generation time are comparable to the case of traditional FRs, if a static fuel is assumed. A notable reduction of ?eff is caused by salt circulation, but a low value of this parameter is a limited concern in the MSFR thanks to the lack of a burnup reactivity swing and of positive feedbacks. A simple approach has also been developed to evaluate the MSFR capabilities to withstand all typical double-fault accidents, for different fuel cycle options.

  18. The energy distribution of beta CrB for the specific stellar abundances

    E-Print Network [OSTI]

    F. Castelli

    1998-05-06T23:59:59.000Z

    The comparison of the observed and computed energy distributions of beta CrB has shown that a model with the specific chemical composition of the star can account for the visual enery distribution, while it is still unable to reproduce ultraviolet observations shortward of 1700 A. Furthermore, the predicted absorption of strong Fe II and Mg II UV lines is much larger than the observed one.

  19. MICROSTRUCTURAL EXAMINATION OF V-4CR-4TI PRESSURIZED THERMAL CREEP TUBES

    SciTech Connect (OSTI)

    Gelles, David S.

    2002-09-01T23:59:59.000Z

    Two further failed thermal creep pressurized tubes of V-4Cr-4Ti tested at 700 and 800 degrees C have been examined using optical microscopy and transmission electron microscopy in order to understand failure and creep mechanisms. These conditions represent lower stress states than were previously examined. Creep deformation at lower stress is shown to be controlled by sub-boundary formation and mis-orientation between sub-grains arising from climb of dislocations within the boundary.

  20. A High-resolution Spectrum of the R CrB Star V2552 Ophiuchi

    E-Print Network [OSTI]

    N. Kameswara Rao; David L. Lambert

    2003-08-25T23:59:59.000Z

    Photometry and low-resolution spectroscopy have added V2552 Oph to the rare class of R Coronae Borealis variables. We confirm this classification of V2552 Oph through a comparison of our high-resolution optical spectrum of this star and that of R CrB and other F-type members of the class. We show that V2552 Oph most closely resembles Y Mus and FH Sct, stars in which Sr, Y, and Zr are enhanced.

  1. High pressure synthesis of a new chromite, ScCrO{sub 3}

    SciTech Connect (OSTI)

    Park, J.H.; Parise, J.B. [State Univ. of New York, Stony Brook, NY (United States)] [State Univ. of New York, Stony Brook, NY (United States)

    1997-12-01T23:59:59.000Z

    A new compound, ScCrO{sub 3} has been synthesized at 45 kbar and 1,200 C using the cylindrical type press (USCA-1000). It has Pbnm symmetry with a = 5.0329(2) {angstrom}, b = 5.3602(3) {angstrom}, and c = 7.3790(4) {angstrom}, and its structure has been refined using the Rietveld technique and the synchrotron powder X-ray diffraction data.

  2. Ferromagnetic ordering of Cr and Fe doped p-type diamond: An ab initio study

    SciTech Connect (OSTI)

    Benecha, E. M. [Department of Physics, University of South Africa, P.O Box 392, UNISA 0003, Pretoria (South Africa); Lombardi, E. B. [College of Graduate Studies, University of South Africa, P.O Box 392, UNISA 0003, Pretoria (South Africa)

    2014-02-21T23:59:59.000Z

    Ferromagnetic ordering of transition metal dopants in semiconductors holds the prospect of combining the capabilities of semiconductors and magnetic systems in single hybrid devices for spintronic applications. Various semiconductors have so far been considered for spintronic applications, but low Curie temperatures have hindered room temperature applications. We report ab initio DFT calculations on the stability and magnetic properties of Fe and Cr impurities in diamond, and show that their ground state magnetic ordering and stabilization energies depend strongly on the charge state and type of co-doping. We predict that divacancy Cr{sup +2} and substitutional Fe{sup +1} order ferromagnetically in p-type diamond, with magnetic stabilization energies (and magnetic moment per impurity ion) of 16.9 meV (2.5 ?{sub B}) and 33.3 meV (1.0 ?{sub B}), respectively. These magnetic stabilization energies are much larger than what has been achieved in other semiconductors at comparable impurity concentrations, including the archetypal dilute magnetic semiconductor GaAs:Mn. In addition, substitutional Fe{sup +1} exhibits a strong half-metallic character, with the Fermi level crossing bands in only the spin down channel. These results, combined with diamond’s extreme properties, demonstrate that Cr or Fe dopedp-type diamond may successfully be considered in the search for room temperature spintronic materials.

  3. Effect of heat treatment on the mechanical properties of modified 9Cr-1Mo steel

    SciTech Connect (OSTI)

    Sultan F. Alsagabi; Triratna Shrestha; Indrajit Charit; Gabriel P. Potirniche; Michael V. Glazoff

    2014-09-01T23:59:59.000Z

    The modified 9Cr-1Mo steel (Grade 91) is a material of choice in fossil-fuel-fired power plants with increased efficiency, service life, and reduction in emission of greenhouse gases. It is also considered a prospective material for the Next Generation Nuclear Power Plant for application in reactor pressure vessels at temperatures up to 650°C. In this paper, heat treatment of the modified 9Cr-1Mo steel was studied by normalizing and tempering the steel at various temperatures and times, with the ultimate goal of improving its creep resistance and optimizing material hardness. The microstructural evolution of the heat treated steels was correlated with the differential scanning calorimetric results. Optical microscopy, scanning and transmission electron microscopy in conjunction with microhardness profiles and calorimetric plots were used to understand the evolution of microstructure including precipitate structures in modified 9Cr-1Mo steel and relate it to the mechanical behavior of the steel. Thermo- CalcTM calculations were used to support experimental work and provide guidance in terms of the precipitate stability and microstructural evolution. Furthermore, the carbon isopleth and temperature dependencies of the volume fraction of different precipitates were constructed. The predicted and experimentally observed results were found to be in good agreement.

  4. MICROBEAM SYNCHROTRON RADIATION DIFFRACTION AND FLUORESCENCE STUDY OF OXIDE LAYERS FORMED ON 9Cr ODS STEEL IN

    E-Print Network [OSTI]

    Motta, Arthur T.

    ODS STEEL IN SUPERCRITICAL WATER Arthur T. Motta1 , Andrew D. Siwy1 , Jamie M. Kunkle1 , Jeremy B is presented for an oxide formed on 9Cr ODS steel after exposure to supercritical water for 667 hours

  5. Attribute Cr. Course Name Prereq 4 BIOL 220 (204) Principles of Biology: Organisms, Ecology, Evolution Plus Lab and discussion (Fall)

    E-Print Network [OSTI]

    Lewis, Robert Michael

    Attribute Cr. Course Name Prereqs Prereq 4 BIOL 220 (204) Principles of Biology: Organisms, Ecology Foundations of Learning and Memory (Fall, Spr) Beh. Elec. 3 PSYC 317 Sensation and Perception (Fall) Beh

  6. Coordination and Haptotropic Rearrangement of Cr(CO)3 on (n,0) Nanotube Sidewalls: A Dynamical Density Functional Study

    E-Print Network [OSTI]

    Giannozzi, Paolo

    them ideal candidates for use in fuel cells (batteries), electron devices (semiconductors), catalysts optimizations have been performed on the Cr(CO)3-(C72H12) complex, pointing out the preferred coordination sites

  7. Auger Nanoprobe analysis of presolar ferromagnesian silicate grains from primitive CR chondrites QUE 99177 and MET 00426

    E-Print Network [OSTI]

    Auger Nanoprobe analysis of presolar ferromagnesian silicate grains from primitive CR chondrites inventories are dominated by ferromagnesian silicates with group 1 oxygen isotopic compositions, indicative interstellar silicates have stoichiometries between olivine and pyroxene type silicates. Although structural

  8. Cr-W-V bainitic/ferritic steel with improved strength and toughness and method of making

    DOE Patents [OSTI]

    Klueh, Ronald L. (Knoxville, TN); Maziasz, Philip J. (Oak Ridge, TN)

    1994-01-01T23:59:59.000Z

    A high strength, high toughness Cr-W-V ferritic steel composition suitable for fast induced-radioactivity (FIRD) decay after irradiation in a fusion reactor comprises 2.5-3.5 wt % Cr, 2. This invention was made with Government support under contract DE-AC05-840R21400 awarded by the U.S. Department of Energy to Martin Marietta Energy Systems, Inc. and the Government has certain rights in this invention.

  9. Structure of multilayered Cr(Al)N/SiO{sub x} nanocomposite coatings fabricated by differential pumping co-sputtering

    SciTech Connect (OSTI)

    Kawasaki, Masahiro [JEOL USA Inc., 11 Dearborn Road, Peabody, Massachusetts 01960 (United States)] [JEOL USA Inc., 11 Dearborn Road, Peabody, Massachusetts 01960 (United States); Nose, Masateru [Faculty of Art and Design, University of Toyama, 180 Futagami-machi, Takaoka 933-8588 (Japan)] [Faculty of Art and Design, University of Toyama, 180 Futagami-machi, Takaoka 933-8588 (Japan); Onishi, Ichiro [JEOL Ltd. 3-1-2 Musashino, Akishima, Tokyo 196-8558 (Japan)] [JEOL Ltd. 3-1-2 Musashino, Akishima, Tokyo 196-8558 (Japan); Shiojiri, Makoto [Kyoto Institute of Technology, Kyoto 606-8585 (Japan)] [Kyoto Institute of Technology, Kyoto 606-8585 (Japan)

    2013-11-11T23:59:59.000Z

    A Cr(Al)N/38 vol. % SiO{sub x} hard coating was prepared on a (001) Si substrate at 250 °C in a differential pumping co-sputtering system, which has two chambers for radio frequency (RF) sputtering and a substrate holder rotating on the chambers. The composite coating was grown by alternate sputter-depositions from CrAl and SiO{sub 2} targets with flows of N{sub 2}+Ar and Ar at RF powers of 200 and 75 W, respectively, on transition layers grown on the substrate. Analytical electron microscopy reveled that the Cr(Al)N/SiO{sub x} coating had a multilayered structure of Cr(Al)N crystal layers ?1.6 nm thick and two-dimensionally dispersed amorphous silicon oxide (a-SiO{sub x}) particles with sizes of ?1 nm or less. The a-SiO{sub x} particles were enclosed with the Cr(Al)N layers. The coating had a low indentation hardness of ?25 GPa at room temperature, due to a high oxide fraction of 38 vol. % and a low substrate rotational speed of 1 rpm. Faster rotation and lower oxide fraction would make a-SiO{sub x} particles smaller, resulting in the formation of Cr(Al)N crystal including the very fine a-SiO{sub x} particles with small number density. They would work as obstacles for the lattice deformation of the Cr(Al)N crystals. We have fabricated a superhard coating of Cr(Al)N/17 vol. % SiO{sub x} with a hardness of 46 GPa prepared at 12 rpm.

  10. Characterization of Cr poisoning in a solid oxide fuel cell cathode using a high-energy x-ray microbeam.

    SciTech Connect (OSTI)

    Liu, D. J.; Almer, J.; Cruse, T.

    2010-01-01T23:59:59.000Z

    A key feature of planar solid oxide fuel cells (SOFCs) is the feasibility of using metallic interconnects made of high temperature ferritic stainless steels, which reduce system cost while providing excellent electric conductivity. Such interconnects, however, contain high levels of chromium, which has been found to be associated with SOFC cathode performance degradation at SOFC operating temperatures; a phenomenon known as Cr poisoning. Here, we demonstrate an accurate measurement of the phase and concentration distributions of Cr species in a degraded SOFC, as well as related properties including deviatoric strain, integrated porosity, and lattice parameter variation, using high energy microbeam X-ray diffraction and radiography. We unambiguously identify (MnCr){sub 3}O{sub 4} and Cr{sub 2}O{sub 3} as the two main contaminant phases and find that their concentrations correlate strongly with the cathode layer composition. Cr{sub 2}O{sub 3} deposition within the active cathode region reduces porosity and produces compressive residual strains, which hinders the reactant gas percolation and can cause structural breakdown of the SOFC cathode. The information obtained through this study can be used to better understand the Cr-poisoning mechanism and improve SOFC design.

  11. Synthesis and characterization of Cr-doped ZnO nanorod-array photocatalysts with improved activity

    SciTech Connect (OSTI)

    Chang, Chi-Jung, E-mail: changcj@fcu.edu.tw; Yang, Tsung-Lin; Weng, Yu-Ching

    2014-06-01T23:59:59.000Z

    Immobilized photocatalysts with high catalytic activity under UV light were prepared by growing Cr-doped ZnO nanorods on glass substrates by a hydrothermal method. The effects of Cr dopant on the surface texture, crystallinity, surface chemistry, and photoinduced charge separation and their relation with the photocatalytic degradation of Cr-doped ZnO were investigated by scanning electron microscopy, diffuse reflectance spectra, photoelectrochemical scanning electrochemical microscopy, and X-ray photoemission spectroscopy. Adding the appropriate amount of Cr dopant is a powerful way to enhance the separation of charge carriers in ZnO photocatalyst. The photocatalytic activity was improved due to the increase in surface oxygen vacancies, the separation of charge carriers, modification of the band gap, and the large surface area of the doped ZnO nanorod photocatalyst. - Graphical abstract: Photoinduced charge separation and its relation with the photocatalytic degradation activity of Cr-doped ZnO were investigated by photoelectrochemical scanning electrochemical microscopy. - Highlights: • Cr dopant enhances separation of charge carries in ZnO nanorod photocatalyst. • Photoinduced charge carries separation monitored by PEC-SECM. • The higher the photocurrent is, the higher the photocatalytic activity is. • Degradation of DB86 dye solutions under visible light finished within 50 min. • Higher activity due to more oxygen vacancy, tuned band gap and more surface area.

  12. Transmission electron microscopy of RSP Fe/Cr/Mn/Mo/C alloy. [Fe-3 wt % Cr-2 wt % Mn-0. 5 wt % Mo, -0. 3 wt % C

    SciTech Connect (OSTI)

    Rayment, J.J.; Thomas, G.

    1982-03-01T23:59:59.000Z

    Rapid solidification processing (RSP) has been carried out on an Fe/Cr/Mn/Mo/C alloy using both electron-beam melting and piston-and-anvil techniques. Preliminary TEM results show RSP produces a refined duplex microstructure of ferrite and martensite, with a typical ferrite grain size of 0.50 - 3.0 microns. This RSP microstructure is significantly different from that observed in the conventionally austenitized and quenched alloys - a lath martensitic microstructure with thin films of retained interlath austenite. The morphological change produced by RSP is accompanied by an increase in hardness from 48R/sub c/ to 61R/sub c/ (approx. 480 to 720 VHN). It is intended to use electron-beam specimens to examine the potential beneficial effect of RSP upon sliding wear resistance and, by careful TEM studies, it will be possible to characterize the microstructure and its role in the hardness and wear behavior of the RSP alloy.

  13. ConEd (Gas)- Commercial and Industrial Energy Efficiency Program

    Broader source: Energy.gov [DOE]

    Con Edison offers New York Commercial natural gas customers a rebate program for energy efficient equipment in buildings inside the eligible service area. All equipment must be installed by a...

  14. avanzado tratados con: Topics by E-print Network

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    Technologies and Information Sciences Websites Summary: 1 TemaTema 22 Lenguajes y Operaciones con lenguajes Dr. Luis A. Pineda ISBN: 970-32-2972-7 Dr. Luis A. Pineda,...

  15. ConEd (Electric)- Residential Energy Efficiency Incentives Program

    Broader source: Energy.gov [DOE]

    Additionally, rebates are provided for certain appliances. View the program web site for eligibility and instructions on how to have a secondary, working unit picked up. Contact Con Edison for...

  16. ConEd (Gas)- Residential Energy Efficiency Incentives Program

    Broader source: Energy.gov [DOE]

    Con Edison is offering the Residential HVAC Gas Rebate Program. Through this program, incentives are offered on energy efficient heating and cooling equipment for residences in the eligible service...

  17. abdominal con una: Topics by E-print Network

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    il massimo sviluppo dopo gli anni '30 Roma "La Sapienza", Universit di 18 UNA ARQUITECTURA SEGMENTADA PARA EL CLCULO DEL TIEMPO AL IMPACTO CON VISIN LOG-POLAR Engineering...

  18. aleaciones con tendencias: Topics by E-print Network

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    2012 23:24 Seccin de Tendencias21 elaborada con el asesoramiento de Telefnica Ciencia Agua datos sobre el flujo del agua Un grupo de investigadores de la Universidad de...

  19. ConEd (Electric)- Multifamily Energy Efficiency Incentives Program

    Broader source: Energy.gov [DOE]

    Con Edison offers New York Multifamily electric customers a rebate program for energy efficient cooling and lighting equipment in 5-75 unit buildings in the eligible service area. All equipment...

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  8. asociado con varicocele: Topics by E-print Network

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  14. alimentados con diferentes: Topics by E-print Network

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  15. adolescentes con sobrepeso: Topics by E-print Network

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  17. asociados con austromegabalanus: Topics by E-print Network

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  18. anionico con resina: Topics by E-print Network

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  20. adulta con discapacidad: Topics by E-print Network

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  1. alimentado con mytilus: Topics by E-print Network

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  2. acondicionados con extractos: Topics by E-print Network

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  3. adquisiciones simuladas con: Topics by E-print Network

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  4. adultos vacunados con: Topics by E-print Network

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  10. adversas asociadas con: Topics by E-print Network

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  11. adultos con hemofilia: Topics by E-print Network

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  12. angiotac multislice con: Topics by E-print Network

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  13. aplicados con diferentes: Topics by E-print Network

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  14. agua potable con: Topics by E-print Network

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  15. adultos con sospecha: Topics by E-print Network

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  16. adultos con quemaduras: Topics by E-print Network

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  17. adubados con diferentes: Topics by E-print Network

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  18. area colindante con: Topics by E-print Network

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  19. absorbida con camara: Topics by E-print Network

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  20. asociado con embarazo: Topics by E-print Network

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  1. avena enriquecida con: Topics by E-print Network

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  2. aspirativa con aguja: Topics by E-print Network

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  3. adultos con drepanocitosis: Topics by E-print Network

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  4. amamantados con vacas: Topics by E-print Network

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  5. aminoacidos marcados con: Topics by E-print Network

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  6. ablazione percutanea con: Topics by E-print Network

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  7. anciano con demencia: Topics by E-print Network

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  8. absorcion atomica con: Topics by E-print Network

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  9. acido graso con: Topics by E-print Network

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  10. altamente selectiva con: Topics by E-print Network

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  11. alimentada con diferentes: Topics by E-print Network

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  12. antioxidante con vimang: Topics by E-print Network

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  13. aguda con dapnia: Topics by E-print Network

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  14. analgesia intravenosa con: Topics by E-print Network

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  15. asociado con odontoma: Topics by E-print Network

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  16. alimentadas con dieta: Topics by E-print Network

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  17. alimentados con heno: Topics by E-print Network

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  18. adversos asociados con: Topics by E-print Network

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  19. asociacion con factores: Topics by E-print Network

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  20. anciano con riesgio: Topics by E-print Network

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  1. adulto con cardiopatia: Topics by E-print Network

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  2. ambulatoria con anestesia: Topics by E-print Network

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  3. analgesia postoperatoria con: Topics by E-print Network

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  4. aortico aspetti con: Topics by E-print Network

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  5. asociado con leucaena: Topics by E-print Network

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  6. alimentadas con concentrado: Topics by E-print Network

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  7. anestesiados con halotano: Topics by E-print Network

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  8. angina refractaria con: Topics by E-print Network

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  9. aceros aleados con: Topics by E-print Network

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  10. alimentados con ensilados: Topics by E-print Network

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  11. arteriovenosa con agujas: Topics by E-print Network

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  12. adolescentes con obesidad: Topics by E-print Network

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  13. automatico con diodo: Topics by E-print Network

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  14. anticuerpos monoclonales con: Topics by E-print Network

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  15. adolescentes con conducta: Topics by E-print Network

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  16. arcoiris relacionadas con: Topics by E-print Network

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  17. afectados con espina: Topics by E-print Network

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  18. aguda con metotrexato: Topics by E-print Network

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  19. auditivos con maniobra: Topics by E-print Network

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  20. abierto alimentados con: Topics by E-print Network

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  1. asociados con bulnesia: Topics by E-print Network

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  2. aortica severa con: Topics by E-print Network

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  3. auriculopuntura con semillas: Topics by E-print Network

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  4. aguad con diplodon: Topics by E-print Network

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  5. adolescentes obesos con: Topics by E-print Network

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  6. arranque con cepillo: Topics by E-print Network

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  7. autoinjerto conjuntival con: Topics by E-print Network

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  8. asociaciones relevantes con: Topics by E-print Network

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  9. adicionado con calcio: Topics by E-print Network

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  10. adolescente con trasplante: Topics by E-print Network

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  11. area contaminada con: Topics by E-print Network

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  12. agarizado suplementado con: Topics by E-print Network

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  13. adultos con sobrepeso: Topics by E-print Network

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  14. adultos con diarrea: Topics by E-print Network

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  15. antebrazo con injerto: Topics by E-print Network

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  16. adulta con factores: Topics by E-print Network

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  17. armado con fibras: Topics by E-print Network

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  18. afecciones bucales con: Topics by E-print Network

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  19. anticonceptivos con gestagenos: Topics by E-print Network

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  20. analgesia con dexmedetomidina: Topics by E-print Network

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  1. alimentadas con semilla: Topics by E-print Network

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  2. axilar con colorante: Topics by E-print Network

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  3. activado ttpa con: Topics by E-print Network

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  4. asociado con insuficiencia: Topics by E-print Network

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  5. activada con lantano: Topics by E-print Network

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  6. adolescente con desorden: Topics by E-print Network

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  7. afectado con abomasitis: Topics by E-print Network

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  8. adultos con asma: Topics by E-print Network

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    on Climate Change) 12;Cambio climtico 12;Situacion con el Petroleo 12;12;Energia Renovable en PR Solar Eolica Biocombustibles Agua 12;EL PLANETA AZUL 12;EL AGUA EN LA...

  9. adultos con artritis: Topics by E-print Network

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    on Climate Change) 12;Cambio climtico 12;Situacion con el Petroleo 12;12;Energia Renovable en PR Solar Eolica Biocombustibles Agua 12;EL PLANETA AZUL 12;EL AGUA EN LA...

  10. adolescentes con trastorno: Topics by E-print Network

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    on Climate Change) 12;Cambio climtico 12;Situacion con el Petroleo 12;12;Energia Renovable en PR Solar Eolica Biocombustibles Agua 12;EL PLANETA AZUL 12;EL AGUA EN LA...

  11. abierta con malla: Topics by E-print Network

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  12. adulto con fisura: Topics by E-print Network

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  13. alimentadas con dietas: Topics by E-print Network

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  14. aisi 904l con: Topics by E-print Network

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    on Climate Change) 12;Cambio climtico 12;Situacion con el Petroleo 12;12;Energia Renovable en PR Solar Eolica Biocombustibles Agua 12;EL PLANETA AZUL 12;EL AGUA EN LA...

  15. anestro tratadas con: Topics by E-print Network

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    on Climate Change) 12;Cambio climtico 12;Situacion con el Petroleo 12;12;Energia Renovable en PR Solar Eolica Biocombustibles Agua 12;EL PLANETA AZUL 12;EL AGUA EN LA...

  16. adversos relacionados con: Topics by E-print Network

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    on Climate Change) 12;Cambio climtico 12;Situacion con el Petroleo 12;12;Energia Renovable en PR Solar Eolica Biocombustibles Agua 12;EL PLANETA AZUL 12;EL AGUA EN LA...

  17. asociados con deslizamientos: Topics by E-print Network

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    on Climate Change) 12;Cambio climtico 12;Situacion con el Petroleo 12;12;Energia Renovable en PR Solar Eolica Biocombustibles Agua 12;EL PLANETA AZUL 12;EL AGUA EN LA...

  18. alimenticios vegetales con: Topics by E-print Network

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    on Climate Change) 12;Cambio climtico 12;Situacion con el Petroleo 12;12;Energia Renovable en PR Solar Eolica Biocombustibles Agua 12;EL PLANETA AZUL 12;EL AGUA EN LA...

  19. aluminio reforzados con: Topics by E-print Network

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

    on Climate Change) 12;Cambio climtico 12;Situacion con el Petroleo 12;12;Energia Renovable en PR Solar Eolica Biocombustibles Agua 12;EL PLANETA AZUL 12;EL AGUA EN LA...

  20. alimentados con concentrados: Topics by E-print Network

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

    on Climate Change) 12;Cambio climtico 12;Situacion con el Petroleo 12;12;Energia Renovable en PR Solar Eolica Biocombustibles Agua 12;EL PLANETA AZUL 12;EL AGUA EN LA...

  1. adsortivo con alizarina: Topics by E-print Network

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    on Climate Change) 12;Cambio climtico 12;Situacion con el Petroleo 12;12;Energia Renovable en PR Solar Eolica Biocombustibles Agua 12;EL PLANETA AZUL 12;EL AGUA EN LA...

  2. alimentado con selenastrum: Topics by E-print Network

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

    on Climate Change) 12;Cambio climtico 12;Situacion con el Petroleo 12;12;Energia Renovable en PR Solar Eolica Biocombustibles Agua 12;EL PLANETA AZUL 12;EL AGUA EN LA...

  3. angioplastia facilitada con: Topics by E-print Network

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

    on Climate Change) 12;Cambio climtico 12;Situacion con el Petroleo 12;12;Energia Renovable en PR Solar Eolica Biocombustibles Agua 12;EL PLANETA AZUL 12;EL AGUA EN LA...

  4. anastomosis coloanal con: Topics by E-print Network

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

    on Climate Change) 12;Cambio climtico 12;Situacion con el Petroleo 12;12;Energia Renovable en PR Solar Eolica Biocombustibles Agua 12;EL PLANETA AZUL 12;EL AGUA EN LA...

  5. alimentados con raciones: Topics by E-print Network

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

    on Climate Change) 12;Cambio climtico 12;Situacion con el Petroleo 12;12;Energia Renovable en PR Solar Eolica Biocombustibles Agua 12;EL PLANETA AZUL 12;EL AGUA EN LA...

  6. adultos con mielomeningocele: Topics by E-print Network

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

    on Climate Change) 12;Cambio climtico 12;Situacion con el Petroleo 12;12;Energia Renovable en PR Solar Eolica Biocombustibles Agua 12;EL PLANETA AZUL 12;EL AGUA EN LA...

  7. asistido con forceps: Topics by E-print Network

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

    on Climate Change) 12;Cambio climtico 12;Situacion con el Petroleo 12;12;Energia Renovable en PR Solar Eolica Biocombustibles Agua 12;EL PLANETA AZUL 12;EL AGUA EN LA...

  8. apego con infancia: Topics by E-print Network

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

    on Climate Change) 12;Cambio climtico 12;Situacion con el Petroleo 12;12;Energia Renovable en PR Solar Eolica Biocombustibles Agua 12;EL PLANETA AZUL 12;EL AGUA EN LA...

  9. anfis con residuales: Topics by E-print Network

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

    on Climate Change) 12;Cambio climtico 12;Situacion con el Petroleo 12;12;Energia Renovable en PR Solar Eolica Biocombustibles Agua 12;EL PLANETA AZUL 12;EL AGUA EN LA...

  10. adolescentes con padecimientos: Topics by E-print Network

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

    on Climate Change) 12;Cambio climtico 12;Situacion con el Petroleo 12;12;Energia Renovable en PR Solar Eolica Biocombustibles Agua 12;EL PLANETA AZUL 12;EL AGUA EN LA...

  11. acero revestido con: Topics by E-print Network

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

    on Climate Change) 12;Cambio climtico 12;Situacion con el Petroleo 12;12;Energia Renovable en PR Solar Eolica Biocombustibles Agua 12;EL PLANETA AZUL 12;EL AGUA EN LA...

  12. acmo con especificidad: Topics by E-print Network

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    on Climate Change) 12;Cambio climtico 12;Situacion con el Petroleo 12;12;Energia Renovable en PR Solar Eolica Biocombustibles Agua 12;EL PLANETA AZUL 12;EL AGUA EN LA...

  13. adolescentes con leucemia: Topics by E-print Network

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    on Climate Change) 12;Cambio climtico 12;Situacion con el Petroleo 12;12;Energia Renovable en PR Solar Eolica Biocombustibles Agua 12;EL PLANETA AZUL 12;EL AGUA EN LA...

  14. arterioso persistente con: Topics by E-print Network

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

    on Climate Change) 12;Cambio climtico 12;Situacion con el Petroleo 12;12;Energia Renovable en PR Solar Eolica Biocombustibles Agua 12;EL PLANETA AZUL 12;EL AGUA EN LA...

  15. aguas residuales con: Topics by E-print Network

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

    climtico 12;Situacion con el Petroleo 12;12;Energia Renovable en PR Solar Eolica Biocombustibles Agua 12;EL PLANETA AZUL 12;EL AGUA EN LA TIERRA 12 convirtio en la...

  16. aguas contaminadas con: Topics by E-print Network

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

    climtico 12;Situacion con el Petroleo 12;12;Energia Renovable en PR Solar Eolica Biocombustibles Agua 12;EL PLANETA AZUL 12;EL AGUA EN LA TIERRA 12 convirtio en la...

  17. agua contaminada con: Topics by E-print Network

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

    climtico 12;Situacion con el Petroleo 12;12;Energia Renovable en PR Solar Eolica Biocombustibles Agua 12;EL PLANETA AZUL 12;EL AGUA EN LA TIERRA 12 convirtio en la...

  18. abastecidas con agua: Topics by E-print Network

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

    climtico 12;Situacion con el Petroleo 12;12;Energia Renovable en PR Solar Eolica Biocombustibles Agua 12;EL PLANETA AZUL 12;EL AGUA EN LA TIERRA 12 convirtio en la...

  19. agua con vegetacion: Topics by E-print Network

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

    climtico 12;Situacion con el Petroleo 12;12;Energia Renovable en PR Solar Eolica Biocombustibles Agua 12;EL PLANETA AZUL 12;EL AGUA EN LA TIERRA 12 convirtio en la...

  20. aguas con equipo: Topics by E-print Network

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

    climtico 12;Situacion con el Petroleo 12;12;Energia Renovable en PR Solar Eolica Biocombustibles Agua 12;EL PLANETA AZUL 12;EL AGUA EN LA TIERRA 12 convirtio en la...

  1. agua con fines: Topics by E-print Network

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

    climtico 12;Situacion con el Petroleo 12;12;Energia Renovable en PR Solar Eolica Biocombustibles Agua 12;EL PLANETA AZUL 12;EL AGUA EN LA TIERRA 12 convirtio en la...

  2. agua caliente con: Topics by E-print Network

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    climtico 12;Situacion con el Petroleo 12;12;Energia Renovable en PR Solar Eolica Biocombustibles Agua 12;EL PLANETA AZUL 12;EL AGUA EN LA TIERRA 12 convirtio en la...

  3. agua con diferentes: Topics by E-print Network

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    climtico 12;Situacion con el Petroleo 12;12;Energia Renovable en PR Solar Eolica Biocombustibles Agua 12;EL PLANETA AZUL 12;EL AGUA EN LA TIERRA 12 convirtio en la...

  4. iCons, 2011 Alzheimers and Aluminum: Lesson Plan

    E-Print Network [OSTI]

    Auerbach, Scott M.

    © iCons, 2011 Alzheimers and Aluminum: Lesson Plan Handouts to explore mechanistic link between Alzheimer's and aluminum 5. Brief proposal expanding Points to Aluminum's Link With Alzheimer's Disease" from 1989. Provide handout

  5. Con Edison Commercial and Industrial Energy Efficiency Program 

    E-Print Network [OSTI]

    Pospisil, D.

    2011-01-01T23:59:59.000Z

    ? Con Edison C&I Energy Efficiency Team ? Program Management and Account Executives ? Lockheed Martin Team ? Marketing, Operations, Engineering and Administration ? Market Partner Network ? Con Edison Customers 6 C&I Program: Three Major... Components ? Rebates for Equipment Upgrades ? Performance-based Custom Incentives ? Energy Efficiency Technical Studies 7 8 ? Equipment Rebate Program ? Electric: High Efficiency Lighting, HVAC, Heat Pumps, De-lamping, Controls, Motors, VFD...

  6. Air-Con International: Order (2010-SE-0301)

    Broader source: Energy.gov [DOE]

    DOE ordered Air-Con International, Inc. to pay a civil penalty of $10,000 after finding Air-Con had distributed in commerce in the U.S. central air conditioning units that were not in conformity with the applicable energy conservation standards. DOE also found that, while some units were exported, none of the units were properly marked as imports intended for exportation.

  7. Con Edison Commercial and Industrial Energy Efficiency Program

    E-Print Network [OSTI]

    Pospisil, D.

    2011-01-01T23:59:59.000Z

    1 Con Edison Commercial and Industrial Energy Efficiency Program Discussion Overview ? Benefits, Eligibility & Team Members ? Program Components ? Project Incentives & Energy Studies ? Additional Program Attributes, Tools & Resources... and Sub-metering ? PlaNYC - Green House Gas Emissions 4 5 Customer Eligibility ? Con Edison directly metered Commercial or Industrial customer in an existing building who pays the applicable gas or electric System Benefits Charge The Program Team...

  8. CHARACTERIZATION OF PRESOLAR MATERIAL IN THE CR CHONDRITE NORTHWEST AFRICA 852

    SciTech Connect (OSTI)

    Leitner, J.; Hoppe, P. [Max Planck Institute for Chemistry, Particle Chemistry Department, P.O. Box 3060, 55020 Mainz (Germany); Vollmer, C. [Institut fuer Mineralogie, Westfaelische Wilhelms-Universitaet, 48149 Muenster (Germany); Zipfel, J., E-mail: jan.leitner@mpic.de [Forschungsinstitut und Naturmuseum Senckenberg, Sektion Meteoritenforschung, Senckenberganlage 25, 60325 Frankfurt (Germany)

    2012-01-20T23:59:59.000Z

    We investigated the inventory of presolar silicate, oxide, and silicon carbide (SiC) grains in the CR2 chondrite Northwest Africa (NWA) 852. Thirty-one O-anomalous grains were detected: 24 were identified as silicates ({approx}78 ppm); the remaining 7 are Al-rich oxides ({approx}38 ppm). NWA 852 is the first C2 chondrite containing O-anomalous presolar dust in concentrations comparable to other more primitive meteorites. Eight presolar SiC grains have been found, representing the highest abundance ({approx}160 ppm) observed so far in primitive meteorites. {sup 15}N-enriched matter is also present, although very heterogeneously distributed. Twenty-six of the O-anomalous grains are enriched in {sup 17}O, originating from the outflows of low-mass asymptotic giant branch (AGB) stars. We calculate a silicate/oxide abundance ratio of {approx}2, which indicates a higher degree of aqueous alteration than observed for other presolar-grain-rich meteorites. NWA 852 thus stands between the presolar-grain-rich CR3 chondrites (MET 00426, QUE 99177) and CR2 chondrites with low presolar grain abundances (Renazzo, NWA 530). We calculate an initial presolar silicate abundance of {approx}800 ppm for NWA 852, if silicate destruction by aqueous alteration is taken into account. Transmission electron microscope (TEM) investigation of one presolar Al-rich grain of an AGB star origin revealed that the grain mainly consists of a single crystal of hibonite with slightly varying orientations. A distinct subgrain (d < 100 nm) with a Ca/Ti ratio of {approx}1 is located in the central region, most likely indicating a perovskite-like phase. Our data suggest this phase to be a primary condensate and not an alteration product.

  9. Letter Report Documenting Progress of Second Generation ATF FeCrAl Alloy Fabrication

    SciTech Connect (OSTI)

    Yamamoto,, Y. [ORNL] [ORNL; Yang, Y. [ORNL] [ORNL; Field, K. G. [ORNL] [ORNL; Terrani, K. [ORNL] [ORNL; Pint, B. A. [ORNL] [ORNL; Snead, L. L. [ORNL] [ORNL

    2014-06-10T23:59:59.000Z

    Development of the 2nd generation ATF FeCrAl alloy has been initiated, and a candidate alloy was selected for trial tube fabrication through hot-extrusion and gun-drilling processes. Four alloys based on Fe-13Cr-4.5Al-0.15Y in weight percent were newly cast with minor alloying additions of Mo, Si, Nb, and C to promote solid-solution and second-phase precipitate strengthening. The alloy compositions were selected with guidance from computational thermodynamic tools. The lab-scale heats of ~ 600g were arc-melted and drop-cast, homogenized, hot-forged and -rolled, and then annealed producing plate shape samples. An alloy with Mo and Nb additions (C35MN) processed at 800°C exhibits very fine sub-grain structure with the sub-grain size of 1-3?m which exhibited more than 25% better yield and tensile strengths together with decent ductility compared to the other FeCrAl alloys at room temperature. It was found that the Nb addition was key to improving thermal stability of the fine sub-grain structure. Optimally, grains of less than 30 microns are desired, with grains up to and order of magnitude in desired produced through Nb addition. Scale-up effort of the C35MN alloy was made in collaboration with a commercial cast company who has a capability of vacuum induction melting. A 39lb columnar ingot with ~81mm diameter and ~305mm height (with hot-top) was commercially cast, homogenized, hot-extruded, and annealed providing 10mm-diameter bar-shape samples with the fine sub-grain structure. This commercial heat proved consistent with materials produced at ORNL at the lab-scale. Tubes and end caps were machined from the bar sample and provided to another work package for the ATF-1 irradiation campaign in the milestone M3FT-14OR0202251.

  10. Wavelength and power monitoring of DWDM systems using scanning FP filter calibrated with a FP laser

    E-Print Network [OSTI]

    Wai, Ping-kong Alexander

    Wavelength and power monitoring of DWDM systems using scanning F­P filter calibrated with a F, Department of Electrical Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR , People's Republic of China c Division

  11. Call title : FP7-ENV-2010 Call identifier: FP7-ENV-2010

    E-Print Network [OSTI]

    Milano-Bicocca, Università

    .1.1.5-1 Impact of ocean acidification in the Mediterranean in a changing climate Collaborative Project (small called: ACTIVITY/ AREA TOPICS CALLED FUNDING SCHEMES ACTIVITY 6.1. CLIMATE CHANGE, POLLUTION AND RISKS.1.2. ENV.2010.1.1.2-1 Atmospheric chemistry and climate change interactions Collaborative Project (large

  12. Microstructural examination of V-(4-5%) Cr-(4-5%)Ti irradiated in X530

    SciTech Connect (OSTI)

    Gelles, D.S. [Pacific Northwest National Lab., Richland, WA (United States); Chung, H.M. [Argonne Natinonal Lab., IL (United States)

    1997-08-01T23:59:59.000Z

    Microstructural examination results are reported for two heats of V-(4-5%)Cr-(4-5%)Ti irradiated in the X530 experiment to {approximately}400{degrees}C to provide an understanding of the microstructural evolution that may be associated with degradation of mechanical properties. Fine precipitates were observed in high density intermixed with small defect clusters for all conditions examined following the irradiation. The irradiation-induced precipitation does not appear to be affected by preirradiation heat treatment at 950-1125{degrees}C. There was no evidence for a significant density of large (diameter >10 nm) dislocation loops or network dislocations.

  13. Oxidation Characteristics of Fe-18Cr-18Mn-stainless alloys

    SciTech Connect (OSTI)

    James Rawers

    2010-10-01T23:59:59.000Z

    Air oxidation studies of Fe-18Cr-18Mn stainless steels were conducted at 525°C, 625°C, and 725°C. Alloys were evaluated with respect to changes in oxidation properties as a result of interstitial additions of nitrogen and carbon and of minor solute additions of silicon, molybdenum, and nickel. Interstitial concentrations possibly had a small, positive effect on oxidation resistance. Minor solute additions significantly improved oxidation resistance but could also reduce interstitial solubility resulting in formation of chromium carbides. Loss of solute chromium resulted in a slight reduction in oxidation protection. Oxidation lasting over 500 hours produced a manganese rich, duplex oxide structure: an outer sesquioxide and an inner spinel oxide.

  14. Audit Report: CR-B-95-06 | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed off Energy.gov. Are you0 ARRA NewslettersPartnership1/08 Attendance List7-2602-01 AuditCR-B-95-06

  15. Audit Report: CR-B-97-01 | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed off Energy.gov. Are you0 ARRA NewslettersPartnership1/08 Attendance List7-2602-01CR-B-97-01 Audit

  16. Audit Report: CR-B-97-04 | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed off Energy.gov. Are you0 ARRA NewslettersPartnership1/08 Attendance List7-2602-01CR-B-97-01

  17. Audit Report: CR-B-97-04 | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed off Energy.gov. Are you0 ARRA NewslettersPartnership1/08 Attendance List7-2602-01CR-B-97-01Report:

  18. Audit Report: CR-B-98-02 | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed off Energy.gov. Are you0 ARRA NewslettersPartnership1/08 AttendanceCR-B-98-02 Audit Report:

  19. Audit Report: CR-B-99-02 | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed off Energy.gov. Are you0 ARRA NewslettersPartnership1/08 AttendanceCR-B-98-02 Audit

  20. Audit Report: CR-B-97-03 | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative Fuels DataEnergyDepartmentWind Siting Articles aboutDepartment ofManualCR-B-97-03

  1. Microsoft Word - CR-091 Primary Basis of Cost Savings and Cost Savings Amount Custom Fields

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33Frequently Asked Questions forCheneyNovember S. DEPARTMENTthe UseCR-091 Primary Basis of Cost

  2. Audit Report: CR-B-02-02 | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny: The FutureComments from TarasaName Affiliation Ahern,5ManagementUse01-01CR-B-02-02

  3. Audit Report: CR-B-95-03 | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny: The FutureComments from TarasaName Affiliation3 Audit Report: CR-B-95-03 February

  4. Audit Report: CR-B-95-05 | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny: The FutureComments from TarasaName Affiliation3 Audit Report: CR-B-95-03 February5

  5. Audit Report: CR-B-97-02 | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny: The FutureComments from TarasaName Affiliation3 Audit Report: CR-B-95-03

  6. Audit Report: CR-FS-99-01 | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny: The FutureComments from TarasaName Affiliation3 Audit Report:FS-97-02CR-FS-99-01

  7. Corrosion property of 9Cr-ODS steel in nitric acid solution for spent nuclear fuel reprocessing

    SciTech Connect (OSTI)

    Takeuchi, M.; Koizumi, T. [Japan Atomic Energy Agency, Tokai-mura, Naka-gun, Ibaraki 319-1195 (Japan); Inoue, M.; Koyama, S.I. [Japan Atomic Energy Agency, Oarai-machi, Higashi-ibaraki-gun, Ibaraki 311-1393 (Japan)

    2013-07-01T23:59:59.000Z

    Corrosion tests of oxide dispersion strengthened with 9% Cr (9Cr-ODS) steel, which is one of the desirable materials for cladding tube of sodium-cooled fast reactors, in pure nitric acid solution, spent FBR fuel solution, and its simulated solution were performed to understand the corrosion behavior in a spent nuclear fuel reprocessing. In this study, the 9Cr-ODS steel with lower effective chromium content was evaluated to understand the corrosion behavior conservatively. As results, the tube-type specimens of the 9Cr-ODS steels suffered severe weight loss owing to active dissolution at the beginning of the immersion test in pure nitric acid solution in the range from 1 to 3.5 M. In contrast, the weight loss was decreased and they showed a stable corrosion in the higher nitric acid concentration, the dissolved FBR fuel solution, and its simulated solution by passivation. The corrosion rates of the 9Cr-ODS steel in the dissolved FBR fuel solution and its simulated solution were 1-2 mm/y and showed good agreement with each other. The passivation was caused by the shift of corrosion potential to noble side owing to increase in nitric acid concentration or oxidative ions in the dissolved FBR fuel solution and the simulated spent fuel solution. (authors)

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

    SciTech Connect (OSTI)

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

    2013-08-15T23:59:59.000Z

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

  9. On the peculiar properties of triangular-chain EuCr{sub 3}(BO{sub 3}){sub 4} antiferromagnet

    SciTech Connect (OSTI)

    Gondek, ?., E-mail: lgondek@agh.edu.pl [AGH University of Science and Technology, Faculty of Physics and Applied Computer Science, al. Mickiewicza 30, 30-059 Kraków (Poland); Szytu?a, A. [M. Smoluchowski Institute of Physics, Jagiellonian University, Reymonta 4, 30-059 Kraków (Poland); Przewo?nik, J.; ?ukrowski, J. [AGH University of Science and Technology, Faculty of Physics and Applied Computer Science, al. Mickiewicza 30, 30-059 Kraków (Poland); Prokhorov, A.; Chernush, L.; Zubov, E. [A.A. Galkin Donetsk Physico-Technical Institute, NANU, 83114 Donetsk, R. Luxembourg str. 72 (Ukraine); Dyakonov, V. [A.A. Galkin Donetsk Physico-Technical Institute, NANU, 83114 Donetsk, R. Luxembourg str. 72 (Ukraine); Institute of Physics, PAS, 02-668 Warsaw, Al. Lotników 32/46 (Poland); Duraj, R. [Institute of Physics Technical University of Cracow, Podchorazych 1, 30-084 Krakow (Poland); Tyvanchuk, Yu. [Analytical Chemistry Department, Ivan Franko National University of Lviv, Kyryla and Mephodiya 6, 79005 Lviv (Ukraine)

    2014-02-15T23:59:59.000Z

    In this paper we report studies on EuCr{sub 3}(BO{sub 3}){sub 4} compound, that is a member of newly discovered family of huntite-related specimens for non-linear optics. For the first time, the uncommon temperature dependence of the EuCr{sub 3}(BO{sub 3}){sub 4} lattice parameters is reported. Additionally, the magnetism of this compound is extremely interesting. Namely, a possible interplay in between potentially magnetic rare-earth ions and 3d metal stacked within quasi-1D chain that can lead to a great variety of magnetic behaviour. Indeed, in our studies we have found 3D-long range ordering with metamagnetic behaviour, while at higher temperature the magnetic chains become uncoupled. - Graphical abstract: Torsion-like vibrations are the key to understand negative thermal expansion along the a-axis. Display Omitted - Highlights: • EuCr{sub 3}(BO{sub 3}){sub 4} is a peculiar triangular-chain antiferromagnet. • Rare earth sublattice is non-magnetic with Eu{sup 3+} configuration. • Cr{sup 3+} magnetic moments show 1-D behaviour along with spin fluctuations. • Torsion vibrations of Cr triangular tubes lead to anomalous expansion of unit cell.

  10. Stud. Geophys. Geod., 56 (2012), 677-704, DOI: 10.1007/s11200-011-9005-9 677 2012 Inst. Geophys. AS CR, Prague

    E-Print Network [OSTI]

    Utrecht, Universiteit

    2012-01-01T23:59:59.000Z

    . AS CR, Prague Magnetic susceptibility and its relationship with paleoenvironments, diagenesis, diagenesis 1. INTRODUCTION The use of initial magnetic susceptibility (in) records for high

  11. {ital Ab-initio} calculation of excited state absorption of Cr{sup 4+} in Y{sub 3}Al{sub 5}O{sub 12}

    SciTech Connect (OSTI)

    Ching, W.Y.; Xu, Y. [Department of Physics, University of Missouri-Kansas City, Kansas City, Missouri 64110 (United States)] [Department of Physics, University of Missouri-Kansas City, Kansas City, Missouri 64110 (United States); Brickeen, B.K. [Allied Signal FM T, Kansas City, Missouri 64141 (United States)] [Allied Signal FM T, Kansas City, Missouri 64141 (United States)

    1999-06-01T23:59:59.000Z

    The Cr{sup 3+} and Cr{sup 4+} impurity states in Y{sub 3}Al{sub 5}O{sub 12} (YAG) crystal are studied by {ital ab-initio} supercell calculations using the density-functional theory. Calculations are carried out with Cr substitutions at the octahedral and tetrahedral Al sites including the effect of Ca co-doping. Optical transitions between various levels and to conduction band states are also calculated. A model for excited state absorption for Cr{sup 4+} in YAG is proposed. {copyright} {ital 1999 American Institute of Physics.}

  12. DOE Requires Air-Con International to Cease Sales of Inefficient...

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

    Requires Air-Con International to Cease Sales of Inefficient Air Conditioners and Proposes Penalties DOE Requires Air-Con International to Cease Sales of Inefficient Air...

  13. Oxidation Resistant, Cr Retaining, Electrically Conductive Coatings on Metallic Alloys for SOFC Interconnects

    SciTech Connect (OSTI)

    Vladimir Gorokhovsky

    2008-03-31T23:59:59.000Z

    This report describes significant results from an on-going, collaborative effort to enable the use of inexpensive metallic alloys as interconnects in planar solid oxide fuel cells (SOFCs) through the use of advanced coating technologies. Arcomac Surface Engineering, LLC, under the leadership of Dr. Vladimir Gorokhovsky, is investigating filtered-arc and filtered-arc plasma-assisted hybrid coating deposition technologies to promote oxidation resistance, eliminate Cr volatility, and stabilize the electrical conductivity of both standard and specialty steel alloys of interest for SOFC metallic interconnect (IC) applications. Arcomac has successfully developed technologies and processes to deposit coatings with excellent adhesion, which have demonstrated a substantial increase in high temperature oxidation resistance, stabilization of low Area Specific Resistance values and significantly decrease Cr volatility. An extensive matrix of deposition processes, coating compositions and architectures was evaluated. Technical performance of coated and uncoated sample coupons during exposures to SOFC interconnect-relevant conditions is discussed, and promising future directions are considered. Cost analyses have been prepared based on assessment of plasma processing parameters, which demonstrate the feasibility of the proposed surface engineering process for SOFC metallic IC applications.

  14. Influence of fatigue on the nanohardness of NiTiCr-wires

    SciTech Connect (OSTI)

    Frotscher, M. [Ruhr University, Bochum, Germany; Young, M. L. [Ruhr University, Bochum, Germany; Bei, Hongbin [ORNL; George, Easo P [ORNL; Neuking, K. [Ruhr University, Bochum, Germany; Eggeler, G. [Ruhr University, Bochum, Germany

    2009-01-01T23:59:59.000Z

    Testing parameters, such as rotational speed and bending radius, have a strong influence on the fatigue life of pseudoelastic NiTi shape-memory alloys during bending rotation fatigue (BRF) experiments [M. F. X. Wagner, Int. J. Mat. Res. 97 (2006), p. 1687-1696. and M. Frotscher, et al., Thermomechanical processing, microstructure and bending rotation fatigue of ultra-fine grained NiTiCr-wires, Proceedings of the International Conference for Shape Memory and Superelastic Technologies (SMST 2007), Tsukuba, Japan, ASM International, (2008), p. 149-158.]. Previous studies showed a decrease in the fatigue life for smaller bending radius (i.e. higher equivalent strain) and larger rotational speed. This observation is associated with an increase of dislocation density, the stabilization of stressinduced martensite during cycling, and an increase of the plateau stresses due to self-heating. In the present study, we examine the influence of these fatigue parameters on the nanohardness and shape recovery of pseudoelastic NiTiCr shape-memory alloy wires by nanoindentation. We show that nanoindentation is a suitable method for the characterization of fatigue-related microstructural changes, which affect the mechanical properties.

  15. Discovery of Optical Bursts from MS1603.6+2600 = UW CrB

    E-Print Network [OSTI]

    R. I. Hynes; E. L. Robinson; E. Jeffery

    2004-05-11T23:59:59.000Z

    We report the discovery of several optical burst-like events from the low-mass X-ray binary MS1603.6+2600 (UW CrB). The events last for a few tens of seconds, exhibit a very fast rise and slow decay, and involve optical brightening of a factor of 2-3. The flares appear distinct from the lower level flickering and instead strongly resemble reprocessed type-I X-ray bursts as seen in a number of other neutron star low-mass X-ray binaries. In conjunction with the previously reported candidate X-ray burst, these confirm that the compact object in UW CrB is a neutron star. We examine the optical burst brightness and recurrence times and discuss how the nature of the system can be constrained. We conclude that the source is most likely an accretion disk corona source at an intermediate distance, rather than a nearby quiescent system or very distant dipper.

  16. Solidification characterization of a new rapidly solidified Ni-Cr-Co based superalloy

    SciTech Connect (OSTI)

    Wu, Kai, E-mail: wk-ustb@163.com [School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083 (China)] [School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083 (China); Liu, Guoquan [School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083 (China) [School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083 (China); State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083 (China); Hu, Benfu [School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083 (China)] [School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083 (China); Li, Feng [Department of Materials Science and Metallurgy, University of Cambridge, Cambridge CB2 3QZ (United Kingdom)] [Department of Materials Science and Metallurgy, University of Cambridge, Cambridge CB2 3QZ (United Kingdom); Zhang, Yiwen [School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083 (China) [School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083 (China); High Temperature Materials Research Institution, CISRI, Beijing 100081 (China); Tao, Yu; Liu, Jiantao [High Temperature Materials Research Institution, CISRI, Beijing 100081 (China)] [High Temperature Materials Research Institution, CISRI, Beijing 100081 (China)

    2012-11-15T23:59:59.000Z

    The solidification characterization of a new rapidly solidified Ni-Cr-Co based superalloy prepared by plasma rotating electrode process was investigated by means of optical microscope, scanning electron microscope, and transmission electron microscope. The results show that the solidification microstructure changes from dendrites to cellular and microcrystal structures with decreasing powder size. The elements of Co, Cr, W and Ni are enriched in the dendrites, while Mo, Nb and Ti are higher in the interdendritic regions. The relationships between powder size with the average solid-liquid interface moving rate, the average interface temperature gradient and the average cooling rate are established. Microsegregation is increased with larger powder size. The geometric integrity of MC Prime type carbides in the powders changes from regular to diverse with decreasing powder size. The morphology and quantity of carbides depend on the thermal parameters and non-equilibrium solute partition coefficients during rapid solidification. - Highlights: Black-Right-Pointing-Pointer The relations of solidification thermal parameters with powder size are established. Black-Right-Pointing-Pointer The relation of non-equilibrium solute partition with powder size is investigated. Black-Right-Pointing-Pointer The solidification microstructure is related to thermal parameters. Black-Right-Pointing-Pointer The segregation behavior is linked to non-equilibrium partition coefficients. Black-Right-Pointing-Pointer The morphology and quantity of carbides depend on the above combined factors.

  17. Effect of prior cold work on age hardening of Cu-3Ti-1Cr alloy

    SciTech Connect (OSTI)

    Markandeya, R. [Department of Metallurgical Engineering, College of Engineering, Jawaharlal Nehru Technological University, Kukatpally, Hyderabad-500 072 (India); Nagarjuna, S. [Defence Metallurgical Research Laboratory, Kanchanbagh, Hyderabad-500 058 (India)]. E-mail: snagarjuna1@rediffmail.com; Sarma, D.S. [Department of Metallurgical Engineering, Institute of Technology, Banaras Hindu University, Varanasi-221 005 (India)

    2006-12-15T23:59:59.000Z

    The influence of 50%, 75% and 90% cold work on the age hardening behavior of Cu-3Ti-1Cr alloy has been investigated by hardness and tensile tests, and light optical and transmission electron microscopy. Hardness increased from 118 Hv in the solution-treated condition to 373 Hv after 90% cold work and peak aging. Cold deformation reduced the peak aging time and temperature of the alloy. The yield strength and ultimate tensile strength reached a maximum of 1090 and 1110 MPa, respectively, following 90% deformation and peak aging. The microstructure of the deformed alloy exhibited elongated grains and deformation twins. The maximum strength on peak aging was obtained due to precipitation of the ordered, metastable and coherent {beta}'-Cu{sub 4}Ti phase, in addition to high dislocation density and deformation twins. Over-aging resulted in decreases in hardness and strength due to the formation of incoherent and equilibrium {beta}-Cu{sub 3}Ti phase in the form of a cellular structure. However, the morphology of the discontinuous precipitation changed to a globular form on high deformation. The mechanical properties of Cu-3Ti-1Cr alloy are superior to those of Cu-2.7Ti, Cu-3Ti-1Cd and the commercial Cu-0.5Be-2.5Co alloys in the cold-worked and peak-aged condition.

  18. Microbial community changes during sustained Cr(VI) reduction at the 100H site in Hanford, WA

    SciTech Connect (OSTI)

    Chakraborty, Romy; Brodie, Eoin L; Faybishenko, Boris; Piceno, Yvette M; Tom, Lauren; Choudhuri, Swati; Beller, Harry R; Liu, Jenny; Torok, Tamas; Joyner, Dominique C; Joachimiak, Marcin P; Zhou, Aifen; Van Nostrand, Joy D; Zhou, Joe; Long, Phil E; Newcomer, Darrell R; Andersen, Gary L; Hazen, Terry C.

    2010-05-17T23:59:59.000Z

    Hexavalent Chromium is a widespread contaminant found in soil, sediment, and groundwater. In order to stimulate microbially-mediated reduction of Cr(VI), a poly-lactate compound (HRC) was injected into the Chromium-contaminated aquifer at the Hanford (WA) 100H site in 2004. Cr(VI) concentrations rapidly declined to below the detection limit and remained so for more than three years after injection. Based on the results of the bacterial community composition using high-density DNA 16S rRNA gene microarrays, we observed the community to transition through denitrifying, ironreducing and sulfate-reducing populations. As a result, we specifically focused isolation efforts on three bacterial species that were significant components of the community. Positive enrichments in defined anaerobic media resulted in the isolation of an iron-reducing Geobacter metallireducens-like isolate, a sulfate-reducing Desulfovibrio vukgaris-like strain and a nitrate-reducing Pseudomonas stutzeri-like isolate among several others. All of these isolates were capable of reducing Cr(VI) anoxically and have been submitted for genome sequencing to JGI. To further characterize the microbial, and geochemical mechanisms associated with in situ Cr(VI) reduction at the site, additional HRC was injected in 2008. The goal was to restimulate the indigenous microbial community and to regenerate the reducing conditions necessary for continued Cr(VI) bio-immobilization in the groundwater. Analysis of the microbial populations post-injection revealed that they recovered to a similar density as after the first injection in 2004. In this study, we present the results from our investigation into microbially-mediated Cr(VI) reduction at Hanford, and a comparison of the microbial community development following two HRC injections four years apart.

  19. ConSol (Building Industry Research Alliance) | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty EditCalifornia:PowerCER.png ElColumbia,2005) | Open(Thompson,2006)airConEdisonConSol

  20. Temperature dependence of dynamic Young's modulus and internal friction in three plasma sprayed NiCrAlY coating alloys

    E-Print Network [OSTI]

    Cook, Lloyd Steven

    1989-01-01T23:59:59.000Z

    TEMPERATURE DEPENDENCE OF DYNAM'IIC YOUNG'S MODULUS AND INTERNAL FRICTION IN THREE PLASMA SPRAYED NiCrAlY COATING -ALLOYS A Thesis LLOYD STEVEN COOK Submitted to the 08ice of Graduate Studies of Texas AE M University in part. al full...'illment of the requirement for the degree of MASTER OF SCIENCE August 1989 Itiajor Subject: l'dechanical Engineering TEMPERATURE DEPENDENCE OF DYNAMIC YOUNG'S MODULUS AND INTERNAL FRICTION IN THREE PLASMA SPRAYED NiCrAIY COATING ALLOYS A Thesis by LLOYD STEVEN COOK...

  1. Development of a New Class of Fe-3Cr-W(V) Ferritic Steels for Industrial Process Applications

    SciTech Connect (OSTI)

    Jawad, Mann; Sikka, Vinod K.

    2005-04-06T23:59:59.000Z

    The project described in this report dealt with improving the materials performance and fabrication for hydrotreating reactor vessels, heat recovery systems, and other components for the petroleum and chemical industries. These reactor vessels can approach ship weights of about 300 tons with vessel wall thicknesses of 3 to 8 inches. They are typically fabricated from Fe-Cr-Mo alloy steels, containing 1.25 to 12% chromium and 1 to 2% molybdenum. The goal of this project was to develop Fe-Cr-W(V) steels that can perform similar duties, in terms of strength at high temperatures, but will weigh less and thereby save energy.

  2. Síndrome de Down: ¿otra causa de inmunosupresión asociada con dermatofibromas eruptivos múltiples?

    E-Print Network [OSTI]

    Monteagudo, Benigno; Suárez-Amor, Óscar; Cabanillas, Miguel; León-Mateos, Álvaro; Pérez-Valcárcel, Javier; Heras, Cristina de las

    2009-01-01T23:59:59.000Z

    en la composición celular [ 4 , 5 ]. Existen muchas otrasrespuesta inmunológica celular, con reducción en el número

  3. CX3CR1 Is Expressed by Prostate Epithelial Cells and Androgens Regulate the Levels of CX3CL1/Fractalkine in the Bone Marrow

    E-Print Network [OSTI]

    Fatatis, Alessandro

    CX3CR1 Is Expressed by Prostate Epithelial Cells and Androgens Regulate the Levels of CX3CL1 human osteoblasts in vitro. Thus, the interaction of fractalkine with its receptor CX3CR1 could play a crucial role in vivo by directing circulating prostate cancer cells to the bone. We found that although CX

  4. Quantitative measurement of Cr segregation in Co0.8xCrxPt0.1B0.1 recording media by scatter diagram analysis

    E-Print Network [OSTI]

    Krishnan, Kannan M.

    - trometry or electron energy-loss spectrometry EELS data at each point. In most cases this technique diagram analysis of chemically resolved energy-filtered transmission electron microscopy EFTEM images the Cr enrichment is suf- ficiently high as to render the local Co­Cr composition non- magnetic

  5. altas densidades con: Topics by E-print Network

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

    strr) int i,j; double s; for(i0;i(j0;jstrv; ri*strrs; 2n flops 2n2 flops 12;Operaciones bsicas con matrices void matrizvectorpe (double *m,int fm,int cm,int...

  6. alta velocidad con: Topics by E-print Network

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

    strr) int i,j; double s; for(i0;i(j0;jstrv; ri*strrs; 2n flops 2n2 flops 12;Operaciones bsicas con matrices void matrizvectorpe (double *m,int fm,int cm,int...

  7. anoxicos con alta: Topics by E-print Network

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

    strr) int i,j; double s; for(i0;i(j0;jstrv; ri*strrs; 2n flops 2n2 flops 12;Operaciones bsicas con matrices void matrizvectorpe (double *m,int fm,int cm,int...

  8. Preserving con dentiality when sharing medical database the Cellsecu system

    E-Print Network [OSTI]

    Chen, Sheng-Wei

    , with the rapid advances in the computerization of medical data, the question of protecting medical recordsPreserving con dentiality when sharing medical database the Cellsecu system Yu-Cheng Chiang y that contains sensitive information in medical database by automatically removing, generalizing, and expanding

  9. argentina con actividad: Topics by E-print Network

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

    argentina con actividad First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Estudio de reactividad y...

  10. COSOLINI: "CON BUDINICH SCOMPARE IL FAUTORE DEL SISTEMA TRIESTE"

    E-Print Network [OSTI]

    COSOLINI: "CON BUDINICH SCOMPARE IL FAUTORE DEL SISTEMA TRIESTE" 15 / 11 / 2013 GRAZIA GIORGIO Cordoglio in città per la scomparsa di Paolo Budinich, fondatore del Centro di Fisica Teorica di Trieste; il competitivo "Sistema Trieste" della scienza e della ricerca. Un progetto che l'ha visto sempre coinvolto

  11. -okfl ^ ORNL/CON-172 Linear Harmonic Analysis of Free-

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    Stirling Engines N. C. J. Chen F. P. Griffin OPERATED BY MARTIN MARIETTA ENERGY SYSTEMS, INC. #12;ORNL/CON-172 Engineering Technology Division* LINEAR HARMONIC ANALYSIS OF FREE-PISTON STIRLING/dynamic problem that is associated with a free-piston Stirling engine (FPSE). The governing equations

  12. con Diabetes Su diabetes s se puede controlar!

    E-Print Network [OSTI]

    Do Well, Be Well con Diabetes ¡Su diabetes sí se puede controlar! Educational programs of the Texas, and the County Commissioners Courts of Texas Cooperating. to develop diabetes self-care skills, to improve eating habits and maintain good nutrition, to increase physical activity, to prevent diabetes complications

  13. Impact of a Mixed Oxide’s Surface Composition and Structure on Its Adsorptive Properties: Case of the (Fe,Cr)3O4(111) Termination of the ?-(Fe,Cr)2O3(0001) Surface

    SciTech Connect (OSTI)

    Henderson, Michael A.; Engelhard, Mark H.

    2014-12-18T23:59:59.000Z

    Characterization of an ?-(Fe0.75,Cr0.25)2O3(0001) mixed oxide single crystal surface was conducted using x-ray photoelectron spectroscopy (XPS), secondary ion mass spectrometry (SIMS), low energy electron diffraction (LEED) and temperature programmed desorption (TPD). After sputter/anneal cleaning in ultra-high vacuum (UHV), the mixed oxide surface became terminated with a magnetite-(111) structure based on the presence of (2x2) spots in LEED and Fe2+ in XPS. The composition of the surface was close to that of M3O4 based on XPS, with the metal (M) content of Fe2+/3+ and Cr3+ being close to 1.4:1, despite the fact that the film’s bulk was 3:1 with respect to the metal cations. The enrichment of the surface with Cr was not altered by high temperature oxidation in UHV, but could be returned to that of the bulk film composition by exposure to the ambient. Adsorption of various probe molecules (NO, O2, CO2 and H2O) was used to identify the active cation sites present in the (Fe,Cr)3O4(111) terminated surface. Although XPS and SIMS both indicated that the near-surface region was enriched in Cr3+, no adsorption states typically associated with Cr3+ sites on ?-Cr2O3 single crystal surfaces were detected. Instead, the TPD behaviors of O2 and CO2 pointed toward the main active sites being Fe2+ and Fe3+, with O2 preferentially adsorbing at the former and CO2 at the latter. NO was observed to bind at both Fe2+ and Fe3+ sites, and H2O TPD looked nearly identical to that for H2O on the Fe3O4(111) surface. Competition for adsorption sites between coadsorbed combinations of CO2, O2, H2O and NO corroborated these assignments. These results indicate that the surface composition of a mixed oxide can vary significantly from its bulk composition depending on the treatment conditions. Even then, the surface composition does not necessarily provide direct insight into the active adsorption sites. In the case of the (Fe,Cr)3O4(111) termination of the ?-(Fe0.75,Cr0.25)2O3(0001) surface, Cr3+ cations in the near-surface region appear to be fully coordinated and unavailable for adsorbing molecules. The authors thank Drs. Sara Chamberlin and Scott Chambers for supplying the film used in this work. This work was supported by the US Department of Energy, Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences & Biosciences. Pacific Northwest National Laboratory (PNNL) is a multiprogram national laboratory operated for DOE by Battelle. The research was performed using EMSL, a national scientific user facility sponsored by the Department of Energy's Office of Biological and Environmental Research and located at Pacific Northwest National Laboratory.

  14. Thermodynamic modeling and experimental validation of the Fe-Al-Ni-Cr-Mo alloy system

    SciTech Connect (OSTI)

    Teng, Zhenke [ORNL; Zhang, F [CompuTherm LLC, Madison, WI; Miller, Michael K [ORNL; Liu, Chain T [Hong Kong Polytechnic University; Huang, Shenyan [ORNL; Chou, Y.T. [Multi-Phase Services Inc., Knoxville; Tien, R [Multi-Phase Services Inc., Knoxville; Chang, Y A [ORNL; Liaw, Peter K [University of Tennessee, Knoxville (UTK)

    2012-01-01T23:59:59.000Z

    NiAl-type precipitate-strengthened ferritic steels have been known as potential materials for the steam turbine applications. In this study, thermodynamic descriptions of the B2-NiAl type nano-scaled precipitates and body-centered-cubic (BCC) Fe matrix phase for four alloys based on the Fe-Al-Ni-Cr-Mo system were developed as a function of the alloy composition at the aging temperature. The calculated phase structure, composition, and volume fraction were validated by the experimental investigations using synchrotron X-ray diffraction and atom probe tomography. With the ability to accurately predict the key microstructural features related to the mechanical properties in a given alloy system, the established thermodynamic model in the current study may significantly accelerate the alloy design process of the NiAl-strengthened ferritic steels.

  15. Mn-Fe base and Mn-Cr-Fe base austenitic alloys

    DOE Patents [OSTI]

    Brager, Howard R. (Richland, WA); Garner, Francis A. (Richland, WA)

    1987-01-01T23:59:59.000Z

    Manganese-iron base and manganese-chromium-iron base austenitic alloys designed to have resistance to neutron irradiation induced swelling and low activation have the following compositions (in weight percent): 20 to 40 Mn; up to about 15 Cr; about 0.4 to about 3.0 Si; an austenite stabilizing element selected from C and N, alone or in combination with each other, and in an amount effective to substantially stabilize the austenite phase, but less than about 0.7 C, and less than about 0.3 N; up to about 2.5 V; up to about 0.1 P; up to about 0.01 B; up to about 3.0 Al; up to about 0.5 Ni; up to about 2.0 W; up to about 1.0 Ti; up to about 1.0 Ta; and with the remainder of the alloy being essentially iron.

  16. The influence of temperature on the color of TiO{sub 2}:Cr pigments

    SciTech Connect (OSTI)

    Gomes Vieira, Fagner Ticiano; Silva Melo, Danniely [LACOM, Departamento de Quimica, Centro de Ciencias Exatas e da Natureza, Universidade Federal da Paraiba, Cidade Universitaria, Campus I, CEP:58059 900, Joao Pessoa, PB (Brazil); Jackson Guedes de Lima, Severino [LSR, Departamento de Engenharia Mecanica, Universidade Federal da Paraiba, Joao Pessoa, PB (Brazil); Longo, Elson [CMDMC-LIEC, Instituto de Quimica, Universidade Estadual Paulista, Araraquara, SP (Brazil); Paskocimas, Carlos Alberto [Departamento de Engenharia Mecanica, Universidade Federal do Rio Grande do Norte, Natal, RN (Brazil); Silva Junior, Wilson [Icra Produtos para Ceramica, Mogi Guacu, SP (Brazil); Gouveia de Souza, Antonio [LACOM, Departamento de Quimica, Centro de Ciencias Exatas e da Natureza, Universidade Federal da Paraiba, Cidade Universitaria, Campus I, CEP:58059 900, Joao Pessoa, PB (Brazil); Garcia dos Santos, Ieda Maria [LACOM, Departamento de Quimica, Centro de Ciencias Exatas e da Natureza, Universidade Federal da Paraiba, Cidade Universitaria, Campus I, CEP:58059 900, Joao Pessoa, PB (Brazil)], E-mail: ieda@quimica.ufpb.br

    2009-05-06T23:59:59.000Z

    TiO{sub 2}:Cr brown pigments were prepared via a polymeric precursor derived from the Pechini method. The pigments were analyzed by infrared spectroscopy, X-ray diffraction, ultraviolet-vis spectroscopy, and colorimetry. The increase of the calcination temperature from 700 to 1000 deg. C led to a decrease in the L* values, corresponding to darkening of the pigments. The pigments obtained in this work are darker than those produced by a solid-state reaction method reported before. The change in the pigment color is due to the anatase-rutile phase transition, which leads to a shift in the charge transfer bond (Ti{sup 4+} {r_reversible} O{sup 2-}) due to a change in the crystal field around the chromophore ions. Moreover, the oxidation state of chromium was observed to change, and this also alters the color of the pigments.

  17. 2011 Honda CR-Z 4466 - Hybrid Electric Vehicle Battery Test Results

    SciTech Connect (OSTI)

    Tyler Gray; Matthew Shirk; Jeffrey Wishart

    2014-09-01T23:59:59.000Z

    The U.S. Department of Energy’s Advanced Vehicle Testing Activity Program consists of vehicle, battery, and infrastructure testing on advanced technology related to transportation. The activity includes tests on hybrid electric vehicles, including testing traction batteries when both the vehicles and batteries are new and at the conclusion of 160,000 miles of on-road fleet testing. This report documents battery testing performed for the 2011 Honda CR-Z (VIN JHMZF1C67BS004466). Battery testing was performed by Intertek Testing Services NA. The Idaho National Laboratory and Intertek collaborate on the Advanced Vehicle Testing Activity for the Vehicle Technologies Office of the U.S. Department of Energy.

  18. Microstructural examination of irradiated V-(4-5%)Cr-(4-5%)Ti.

    SciTech Connect (OSTI)

    Gelles, D. S.

    1998-05-04T23:59:59.000Z

    Microstructural examination results are reported for two heats of V-(4-5%) Cr-(4-5%)Ti irradiated in the EBR-II X530 experiment to 4.5 dpa at {approximately}400 C to provide an understanding of the microstructural evolution that may be associated with degradation of mechanical properties. Fine precipitates were observed in high density intermixed with small defect clusters for all conditions examined following the irradiation. The irradiation-induced precipitation does not appear to be affected by preirradiation heat treatment at 950-1125 C. There was no evidence for a significant density of large (diameter >10 nm) dislocation loops or network dislocations. Analytical investigations successfully demonstrated that the precipitates were enriched in titanium, depleted in vanadium and contained no nitrogen. These results are discussed in terms of future alloy development options.

  19. FURTHER OBSERVATIONS ON V-4Cr-4Ti PRESSURIZED CREEP TUBES

    SciTech Connect (OSTI)

    Gelles, David S.; Kurtz, Richard J.; Toloczko, Mychailo B.; Thomas, Larry E.

    2006-03-01T23:59:59.000Z

    Further observations are provided for pressurized thermal creep tubes of V-4Cr-4Ti examined following testing in the range 650 to 800°C for tests lasting up to ~104 h. Precipitate particles have been analyzed by EELS to define interstitial contents, and are shown to be either C or O rich with only minor N contents. Grain shape aspect ratios as a function of strain have been measured and these data shows shape change as a result of effective mid-wall strains as high as 12.7%. Deformation mechanisms are considered to explain Newtonian viscous flow response at 800°C below effective midwall stresses of 70 MPa, and it is concluded that grain boundary sliding probably is the predominant mechanism based on the microstructural information presented here, but there is evidence that Harper-Dorn creep may also be a contributing creep mechanism under these conditions.

  20. Microstructural examination of irradiated V-(4-5%)Cr-(4-5%)Ti

    SciTech Connect (OSTI)

    Gelles, D.S. [Pacific Northwest National Lab., Richland, WA (United States); Rice, P.M.; Zinkle, S.J. [Oak Ridge National Lab., TN (United States); Chung, H.M. [Argonne National Lab., IL (United States)

    1998-03-01T23:59:59.000Z

    Microstructural examination results are reported for two heats of V-(4-5%)Cr-(4-5%)Ti irradiated in the EBR-II X530 experiment to {approximately}4 dpa at {approximately}400 C to provide an understanding of the microstructural evolution that may be associated with degradation of mechanical properties. Fine precipitates were observed in high density intermixed with small defect clusters for all conditions examined following the irradiation. The irradiation-induced precipitation does not appear to b affected by preirradiation heat treatment at 950--1125 C. There was no evidence for a significant density of large (diameter >10 nm) dislocation loops or network dislocations. Analytical investigators successfully demonstrated that the precipitates were enriched in titanium, depleted in vanadium and contained no nitrogen.