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1

Recovery Act update from Sr. Advisor Matt Rogers -- End of Obligations |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

update from Sr. Advisor Matt Rogers -- End of update from Sr. Advisor Matt Rogers -- End of Obligations Recovery Act update from Sr. Advisor Matt Rogers -- End of Obligations Addthis Description Matt Rogers, Senior Advisor to the Secretary for Recovery Act Implementation, shares his thoughts as the Recovery Act reaches a critical milestone -- the end of the 2010 fiscal year and the last day to obligation contract and grant funding under the Recovery Act. Speakers Matt Rogers Duration 2:26 Topic Energy Sources Recovery Act Funding Opportunities Loans Grants Credit Energy Department Video MATTHEW ROGERS: This week, we are obligating the last of our funds under the recovery act for contract and grant work, $32.7 billion of funds, $32.7 billion obligated and on the street. What this means is that we have now

2

Recovery Act update from Sr. Advisor Matt Rogers -- End of Obligations  

SciTech Connect

Senior Advisor to the Secretary for Recovery Act Implementation Matt Rogers shares his thoughts as the Recovery Act reaches a critical milestone -- the end of the 2010 fiscal year and the last day to obligation contract and grant funding under the Recovery Act. For more information about the Recovery Act at the Department of Energy: http://www.energy.gov/recovery Follow the Department of Energy! http://facebook.com/energygov http://twitter.com/energy

Rogers, Matt

2010-01-01T23:59:59.000Z

3

Roger Levy  

NLE Websites -- All DOE Office Websites (Extended Search)

Roger Levy Roger Levy Grid Integration Group Lawrence Berkeley National Laboratory 1 Cyclotron Road MS 90-3111 Berkeley CA 94720 (510) 486-6286 RLevy@lbl.gov This publications database is an ongoing project, and not all Division publications are represented here yet. Publications 2013 Levy, Roger, and Sila Kiliccote. Hawaiian Electric Company Demand Response Roadmap Project Final Report., 2013. Download: PDF (3.33 MB) 2011 Hoffman, Ron, Roger Levy, and Karen Herter. Technical Options to Address Cyber Security, Interoperability and Other Issues with ZigBee SEP., 2011. Download: PDF (824.39 KB) 2010 Goldman, Charles A., Michael Reid, Roger Levy, and Alison Silverstein. Coordination of Energy Efficiency and Demand Response. Berkeley: LBNL, 2010. Download: PDF (364.22 KB) 2004

4

Roger M. Claycomb- Biography  

Energy.gov (U.S. Department of Energy (DOE))

Roger Claycomb has more than 30 years of experience in the nuclear industry in both nuclear facility operations and oversight.

5

Matt Rogers | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Matt Rogers Matt Rogers About Us Matt Rogers - McKinsey & Company Photo of Matt Rogers Matt Rogers is a Director in McKinsey & Company's San Francisco Office. He is focused on the role technology and innovation play in restructuring markets, especially in energy and capital intensive industries. Matt recently rejoined McKinsey after serving as the Senior Advisor to the Secretary of Energy for Recovery Act Implementation. In this role, he had responsibility for managing the Department of Energy's $35.2B in Recovery Act appropriations. The Department of Energy funded more than 5,000 projects through the Recovery Act with a total project value approaching $100B. These projects focused on delivering near term job creation and on accelerating US innovation in energy efficiency, efficient transportation,

6

Tom Rogers Director, Industrial Partnerships  

NLE Websites -- All DOE Office Websites (Extended Search)

Tom Rogers, rogerstc@ornl.gov 865-241-2149 Tom Rogers, rogerstc@ornl.gov 865-241-2149 Tom Rogers Director, Industrial Partnerships and Economic Development Tom Rogers was named Director of Industrial Partnerships and Economic Development at the Oak Ridge National Laboratory in June, 2008. His responsibilities include directing engagements with industrial partners, forging new ORNL entrepreneurial support efforts, and leading a number of strategic initiatives such as the Carbon Fiber Composites Cluster and development of the Oak Ridge Science and Technology Park. Prior to joining ORNL, Tom was the founding President and CEO of Technology 2020, a national award-winning public-private partnership focused on a building a robust regional entrepreneurial support system. Tom has also served as the Executive Director of the Tennessee Technology

7

Opening Remarks … Matt Rogers  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Opening Remarks - Matt Rogers Opening Remarks - Matt Rogers Thank you for that introduction, and welcome to Washington-or to Arlington. I'm Matt Rogers. I lead the Recovery Act activities for the Department of Energy. This is a terrifically important event for the Department. The whole smart grid investment program is one of the signature pillars of the Recovery Act for the Department of Energy. I wanted to congratulate all of you. This was an unbelievably competitive process. While there are 100 successful folks in this room, there were 300 who were not successful. So in this program, as with many others, we turned down three out of four, or four out of five, of the applicants. On average we're turning down eighty percent of the people who apply. So a real congratulations to you and your teams for putting together very competitive

8

%QUEST FOR RECO .JS DI JSITION AUTHORITY  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

i i r rCI - - j %QUEST FOR RECO .JS DI JSITION AUTHORITY -- - - -- - , 8 / - 3 - 1 -- - L-- I4nval Petroleum & Oil Shale Reserves (FE-47) To NATIONAL ARCHIVES & FSCORDS ADMlN',-P?TI3lJ 860 1 ADELPHI ROAD COLLEGE PARK, MD 20740-609 1 1 FROM (Agency or establishment) U.S. Department of Energy 2. MAJOR SUBDIVISION -- Assistant Secretary for Fossil Energy (FE-I) Date-received r- /+--a/ NOTIFICATION TO AGENCY In accordance with the provisions of 44 U.S.C. 3303a, the disposition request, including amendments, is approved except for items that may be marked 'disposition not approved" or "withdrawn" in column 10. 3. AGENCY CERTIFICATION V I hereby certify that I am authorized to act for this agency in matters pertaining to the disposition of its records and that the records

9

J.S. Lansing curriculum vitae Page 1 Curriculum Vitae  

E-Print Network (OSTI)

J.S. Lansing curriculum vitae Page 1 Curriculum Vitae J. STEPHEN LANSING Professor of Anthropology;J.S. Lansing curriculum vitae Page 2 FELLOWSHIPS and AWARDS 2007 Julian Steward Book Prize,671 #12;J.S. Lansing curriculum vitae Page 3 "Integrative Modelling of Environmental Change

Watkins, Joseph C.

10

Assistant Secretary Cathy Zoi and Senior Advisor Matt Rogers...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Assistant Secretary Cathy Zoi and Senior Advisor Matt Rogers to Participate in Platts Energy Reporter Roundtable Assistant Secretary Cathy Zoi and Senior Advisor Matt Rogers to...

11

2003 Moisture Nolan Doesken and Roger Pielke, Sr.  

E-Print Network (OSTI)

Green and Odie Bliss http://climate.atmos.colostate.edu #12;Through 1999 #12;Through 1999 #12;0 5 10 15(inches) Fort Collins Total Water Year Precipitation (Oct-Sep) #12;#12;Reservoir StorageReservoir Storage 2003 Years Temperature(DegreesF) From NOAA, National Climatic Data Center #12;Fort Collins Summer

12

A solar concentrating photovoltaic / thermal collector J.S. Coventry  

E-Print Network (OSTI)

A solar concentrating photovoltaic / thermal collector J.S. Coventry Centre for Sustainable Energy solar concentrating photovoltaic / thermal collector Coventry "Photovoltaic and Wind Power for Urban of both photovoltaic and solar thermal power generation. Some of the recent projects in Australia

13

American Nuclear Society recognizes Roger W. Tilbrook  

NLE Websites -- All DOE Office Websites (Extended Search)

American Nuclear Society recognizes Roger W. Tilbrook Director's Welcome Organization Achievements Highlights Fact Sheets, Brochures & Other Documents Multimedia Library About Nuclear Energy Nuclear Reactors Designed by Argonne Argonne's Nuclear Science and Technology Legacy Opportunities within NE Division Visit Argonne Work with Argonne Contact us For Employees Site Map Help Join us on Facebook Follow us on Twitter NE on Flickr Celebrating the 70th Anniversary of Chicago Pile 1 (CP-1) Argonne OutLoud on Nuclear Energy Argonne Energy Showcase 2012 Highlights Bookmark and Share American Nuclear Society recognizes Roger W. Tilbrook Roger W. Tilbrook, Argonne National Laboratory Nuclear Engineer Roger W. Tilbrook has been recognized for his decades of dedicated service to the American Nuclear Society.

14

Roger Woodward Bland List of Publications  

E-Print Network (OSTI)

of the Prostate Results of a Prospective Study," Medical Dosimetry 33, 22-29. Bland, Roger, and Newell Garfield, "The ANTARES optical module," Nuclear Instruments and Methods Phys. Res. A 484 (2002), 369. Bland

Bland, Roger

15

Piatetski-Shapiro sequences Roger C. Baker  

E-Print Network (OSTI)

Piatetski-Shapiro sequences Roger C. Baker Department of Mathematics, Brigham Young University sequences are sequences of the form nc nN (c > 1, c N). They are named in honor of Piatetski-Shapiro, who #12;Abstract We consider various arithmetic questions for the Piatetski-Shapiro sequences nc (n = 1, 2

Banks, William D.

16

Just Enough Probability Alan R. Rogers  

E-Print Network (OSTI)

statistical probability, the relative frequency with which an event occurs in the long run. The second stud has recently become important in statistics. The focus here is on sta- tistical probability, which hasJust Enough Probability Alan R. Rogers September 8, 2014 Chapter Contents 1 Probability 1 1

Rogers, Alan R.

17

Just Enough Probability Alan R. Rogers  

E-Print Network (OSTI)

statistical probability, the relative frequency with which an event occurs in the long run. The second stud has recently become important in statistics. The focus here is on sta- tistical probability, which hasJust Enough Probability Alan R. Rogers September 26, 2013 Chapter Contents 1 Probability 1 1

Rogers, Alan R.

18

Evidential Symmetry and Mushy Credence Roger White  

E-Print Network (OSTI)

1 Evidential Symmetry and Mushy Credence Roger White MIT rog@mit.edu draft 4/07 The Principle arise. I'm wondering if the marble taken from this urn is black or white. I might have a rich body in the box has been selected from a shaken urn containing just five white and five black balls. Or I might

Fitelson, Branden

19

Matt Rogers on AES Energy Storage  

SciTech Connect

The Department of Energy and AES Energy Storage recently agreed to a $17.1M conditional loan guarantee commitment. This project will develop the first battery-based energy storage system to provide a more stable and efficient electrical grid for New York State's high-voltage transmission network. Matt Rogers is the Senior Advisor to the Secretary for Recovery Act Implementation.

Rogers, Matt

2010-01-01T23:59:59.000Z

20

ME 6222: Manufacturing Processes and Systems Prof. J.S. Colton GIT 2010  

E-Print Network (OSTI)

and Systems Prof. J.S. Colton © GIT 2010 5 Tool Wear (e)(d) (a) (b) (c) Rake Flank #12;ME 6222: Manufacturing Overview · Failure mechanisms · Wear mechanisms · Wear of ceramic tools · Tool life · Machining conditions selection #12;ME 6222: Manufacturing Processes and Systems Prof. J.S. Colton © GIT 2010 3 Tool Wear Zones

Colton, Jonathan S.

Note: This page contains sample records for the topic "js rogers sr" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

SR0013  

NLE Websites -- All DOE Office Websites (Extended Search)

and use of technology for the benefit of its managers and employees." Brent Armstrong, SR Assistant Manager for Business and Logistics, accepted the award at ceremonies...

22

THE FEDERAL ENERGY ADMINISTRATION By Roger Anders  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

FEDERAL ENERGY FEDERAL ENERGY ADMINISTRATION By Roger Anders November 1980 U.S. Department of Energy Office of Management Office of the Executive Secretariat Office of History and Heritage Resources 1 Introduction For the three-year period between 1974 and 1977, the Federal Energy Administration implemented federal oil allocation and pricing regulations. An independent agency, the Federal Energy Administration was the successor of the Federal Energy Office, a short-term organization created to coordinate the government's response to the Arab oil embargo. By October 1977, when it became a part of the newly established Department of Energy, the Federal Energy

23

"A future full of promise" William Barton Rogers, 18041882  

E-Print Network (OSTI)

"A future full of promise" William Barton Rogers, 1804­1882 The Massachusetts State House, Beacon Hill, Boston--hub of the solar system, declared Oliver Wendell Holmes. When Governor John Andrew showed thought. "An Act to incorpo- rate the Massachusetts Institute of Technology. . . . William B. Rogers

24

SR0208  

NLE Websites -- All DOE Office Websites (Extended Search)

Office of External Affairs at (803) 725-2889. The book was written and produced under a cooperative agreement between DOE-SR and New South Associates, a professional cultural...

25

Roger D. Kornberg Polymerase, DNA, RNA, and Transcription  

Office of Scientific and Technical Information (OSTI)

Roger D. Kornberg Roger D. Kornberg Polymerase, DNA, RNA, and Transcription Resources with Additional Information Roger D. Kornberg Credit: Linda A. Cicero/ Stanford News Service Roger D. Kornberg was awarded the 2006 Nobel Prize in Chemistry "for his studies of the molecular basis of eukaryotic transcription". He determined 'how DNA's genetic blueprint is read and used to direct the process for protein manufacture. Kornberg carried out a significant part of the research leading to this prize at the Stanford Synchrotron Radiation Laboratory (SSRL), a Department of Energy (DOE)-supported research facility located at the Stanford Linear Accelerator Center (SLAC). Kornberg also carried out research at the Advanced Light Source, another DOE-funded synchrotron light source located at the Lawrence Berkeley National Laboratory. ...

26

VBA-0032- In the Matter of Roger H. Hardwick  

Energy.gov (U.S. Department of Energy (DOE))

This Decision considers an Appeal of an Initial Agency Decision issued on July 6, 1999, on a complaint filed by Roger H. Hardwick (Hardwick or the complainant) under the Department of Energy (DOE)...

27

VWA-0032- In the Matter of Roger W. Hardwick  

Energy.gov (U.S. Department of Energy (DOE))

This Decision involves a complaint of reprisal filed by Roger W. Hardwick (also referred to as the Complainant) under the Department of Energys (DOE) Contractor Employee Protection Program, 10 C.F...

28

SR0105  

NLE Websites -- All DOE Office Websites (Extended Search)

4, 2001 4, 2001 Media Contact: Julie Petersen (803) 725-2889 Doe Announces Availability Of Draft RFP On Salt Waste Processing Facility Flag Ribbon Art Aiken, SC; May 24, 2001 -- Today the Department of Energy (DOE) Savannah River Operations Office (SR) announced in the Commerce Business Daily the availability of the Draft Request for Proposals (RFP) for the acquisition of services to design, construct, and commission a facility to process the salt fraction of high-level radioactive waste currently stored in underground tanks at the Savannah River Site. DOE-SR is seeking industry and stakeholder comments on the draft RFP. The Draft Request for Proposals, DE-RP09-01SR22210, Salt Waste Processing Facility, is available at the DOE Public Reading Room at the Gregg-Graniteville Library at the University of South Carolina-Aiken campus in Aiken, South Carolina, or Internet-accessible at www.e-center.doe.gov.

29

^ <\^ P. Franzmi, B. Leontic, D. Rahm and N. Saraios JS^'^'^'^^ Brookhaven National Laboratory, Upton, New York litHwIUl  

NLE Websites -- All DOE Office Websites (Extended Search)

r . . - r . . - Submitted to Phys. Rev. Letters January 1965 B-40 (BC) , ^ i r A Search for Massive Particles Produced in Interactions at 30 BeV* BNL 8751 ( ^ ^ <\^ P. Franzmi, B. Leontic, D. Rahm and N. Saraios JS^'^'^'^^ Brookhaven National Laboratory, Upton, New York litHwIUl .<^W<,^' o<^V ^' Schwartz sSr . . , ,<= ^^ <^ Columbia University, New York, New York We report here the results of a search for moderately stable negatively charged particles in the mass region of 2.5 - 5.0 BeV, produced in collisions of 30 BeV protons with tungsten nuclei at the Brookhaven A.G.S. The unitary symmetry model of strong interactions has received an impressive amount of experimental 2 confirmation. This in turn has stimulated a great deal of speculation concerning the origin of such a symmetry, leading to

30

Genome Sequence of the Ethene- and Vinyl Chloride-Oxidizing Actinomycete Nocardioides sp Strain JS614  

SciTech Connect

Nocardioides sp. strain JS614 grows on ethene and vinyl chloride (VC) as sole carbon and energy sources and is of interest for bioremediation and biocatalysis. Sequencing of the complete genome of JS614 provides insight into the genetic basis of alkene oxidation, supports ongoing research into the physiology and biochemistry of growth on ethene and VC, and provides biomarkers to facilitate detection of VC/ethene oxidizers in the environment. This is the first genome sequence from the genus Nocardioides and the first genome of a VC/ethene-oxidizing bacterium.

Coleman, Nicholas V [University of Sydney, Australia; Wilson, Neil L [University of Sydney, Australia; Barry, Kerrie [U.S. Department of Energy, Joint Genome Institute; Bruce, David [Los Alamos National Laboratory (LANL); Copeland, A [U.S. Department of Energy, Joint Genome Institute; Dalin, Eileen [U.S. Department of Energy, Joint Genome Institute; Detter, J. Chris [U.S. Department of Energy, Joint Genome Institute; Glavina Del Rio, Tijana [U.S. Department of Energy, Joint Genome Institute; Goodwin, Lynne A. [Los Alamos National Laboratory (LANL); Hammon, Nancy [U.S. Department of Energy, Joint Genome Institute; Han, Shunsheng [Los Alamos National Laboratory (LANL); Hauser, Loren John [ORNL; Israni, Sanjay [U.S. Department of Energy, Joint Genome Institute; Kim, Edwin [U.S. Department of Energy, Joint Genome Institute; Kyrpides, Nikos C [U.S. Department of Energy, Joint Genome Institute; Land, Miriam L [ORNL; Lapidus, Alla L. [U.S. Department of Energy, Joint Genome Institute; Larimer, Frank W [ORNL; Lucas, Susan [U.S. Department of Energy, Joint Genome Institute; Pitluck, Sam [U.S. Department of Energy, Joint Genome Institute; Richardson, Paul [U.S. Department of Energy, Joint Genome Institute; Schmutz, Jeremy [Stanford University; Tapia, Roxanne [Los Alamos National Laboratory (LANL); Thompson, Sue [Los Alamos National Laboratory (LANL); Tice, Hope [U.S. Department of Energy, Joint Genome Institute; Spain, Jim C [Georgia Institute of Technology; Gossett, James G [Cornell University; Mattes, Timothy E [University of Iowa

2011-01-01T23:59:59.000Z

31

ME 4210: Manufacturing Processes and Engineering -Prof. J.S. Colton GIT 2011  

E-Print Network (OSTI)

or both · Open or closed (flash) · Key additional limitation ­ die pressure #12;ME 4210: ManufacturingME 4210: Manufacturing Processes and Engineering - Prof. J.S. Colton © GIT 2011 1 Topical Course Review No warranty as to completeness #12;ME 4210: Manufacturing Processes and Engineering - Prof. J

Colton, Jonathan S.

32

Recent results from the G0 J.S. Real11,a  

E-Print Network (OSTI)

Recent results from the G0 experiment J.S. Real11,a , D. Androi´c1 , D. S. Armstrong2 , J. Arvieux3. Pate10 , S. K. Phillips2 , P. Pillot11 , M. L. Pitt15 , M. Poelker6 , B. Quinn7 , W. D. Ramsay8 , J

Paris-Sud XI, Université de

33

A Structural Model of Markets in Madagascari J.S. Butler and Christine Moserii  

E-Print Network (OSTI)

capacity for identifying the factors contributing to market integration or to high transfer costs1 A Structural Model of Markets in Madagascari J.S. Butler and Christine Moserii June 2009 i Model of Markets in Madagascar Abstract Market efficiency and price transmission across space

Krivobokova, Tatyana

34

SR 2000 News Releases  

NLE Websites -- All DOE Office Websites (Extended Search)

0 News Releases 0 News Releases Nuclear Security Oversight Panel Visits SRS As Part of NNSA Tour - SR-00-01 DOE Security Czar To Visit SRS - SR-00-02 DOE To Present SRS Fiscal Year 2001 Budget - SR-00-03 DOE Releases Accident Investigation Report On FB-Line Workers' Plutonium Intake - SR-00-04 Environmental Management Science Program National Workshop - SR-00-05 DOE Cleanup Science on Display In Atlanta - SR-00-06 Environmental Cleanup Technology Conference Held - SR-00-07 Wackenhut Receives Award Fee - SR-00-08 WSRC Receives Award Fee - SR-00-09 DOE Hosts Radioactive Materials Transportation Workshop - SR-00-10 Energy Secretary To Visit SRS - SR-00-11 "Melt & Dilute" Selected To Treat DOE's Spent Nuclear Fuel At SRS - SR-00-12 Savannah River Operations Office Wins Best Practices Award - SR-00-13

35

Economics for a Creative World1 ROGER KOPPL  

E-Print Network (OSTI)

Economics for a Creative World1 ROGER KOPPL Whitman School of Management, Syracuse University Economics, 2015, to appear. #12;#12;Abstract Drawing on current biology, we argue that the phase space of economic evolution is not stable. Thus, there are no entailing laws of economic dynamics. In this sense

Longo, Giuseppe

36

SR 2001 News Releases  

NLE Websites -- All DOE Office Websites (Extended Search)

SR 2001 News Releases SR 2001 News Releases Department of Energy Extends Contract at SRS - R-01-002 Savannah River Site's Martin Luther King, Jr. Day Observance - SR-01-01 DOE Announces Availability of Draft SEIS on Salt Processing Alternatives - SR-01-02 Media Availability For WIPP Shipment - SR-01-03 Savannah River Site Sends First Shipment Of Transuranic Waste To WIPP - SR-01-04 DOE Announces Availability Of Draft RFP On Salt Waste Processing Facility - SR-01-05 DOE Announces Wackenhut Services, Inc. - SR-01-06 DOE & DOL Hold Public Meeting For Energy Employees Occupational Illness Compensation Program Act - SR-01-07 DOE Announces Plans For Offsite Treatment & Disposal Of SRS Waste - SR-01-08 DOE Announces Availability Of Final Supplemental EIS And Identifies Preferred Salt Processing Alternative - SR-01-09

37

SR0109  

NLE Websites -- All DOE Office Websites (Extended Search)

0, 2001 0, 2001 Media Contact: Julie Petersen (803) 725-2889 DOE ANNOUNCES AVAILABILITY OF FINAL SUPPLEMENTAL EIS AND IDENTIFIES PREFERRED SALT PROCESSING ALTERNATIVE Flag Ribbon Art AIKEN, SC; July 20 -Today the Department of Energy (DOE) Savannah River Operations Office (SR) announced the availability of the Savannah River Site Salt Processing Alternatives Final Supplemental Environmental Impact Statement (EIS). Based on DOE's evaluation of research results and comments received on the Draft Supplemental EIS, the Final Supplemental EIS identifies the Caustic Side Solvent Extraction technology as the preferred alternative for separating the high-activity and low-activity salt waste from the liquid high-level radioactive waste now stored in underground tanks at the Savannah River Site (SRS).

38

SR0111  

NLE Websites -- All DOE Office Websites (Extended Search)

4, 2001 4, 2001 Media Contact: Martha Merriweather (803) 725-2889 Dept. Of Energy Kicks Off Its 2001 Combined Federal Campaign Flag Ribbon Art AIKEN, SC - DOE employees at SRS begin their 2001 CFC with an Opening Program celebration on October 9. The Campaign runs through October 18, concluding with a Closing Ceremony on October 25. This year's campaign theme is "Caring for Community." The CFC is the government's way for federal employees to contribute to community agencies as well as agencies that work throughout the world. The SRS goal for this year is $101,000. Employee participation, which has steadily increased over the past years, is expected to reach near 100 percent. "Federal employees at SRS have a strong history of giving and I am confident this year's campaign will be successful," says DOE-SR Manager Greg Rudy.

39

Drought PerspectivesDrought Perspectives Nolan Doesken and Roger Pielke, Sr.  

E-Print Network (OSTI)

Center Prepared by Tara Green and Odie Bliss http://climate.atmos.colostate.edu #12;Fort Collins Summer 1969 1979 1989 1999 Years Temperature(Deg.F) Summer Total 7 year running mean #12;Fort Collins Historic Date PercentofAverage #12;What Comes Next? #12;#12;Fort Collins Accumulated Deficit for October 1997

40

SR0113?  

NLE Websites -- All DOE Office Websites (Extended Search)

December 5, 2001 December 5, 2001 Media Contact: Bill Taylor (803) 725-2889 DOE Announces Availability Of Final RFP For SRS Salt Processing Facility Flag Ribbon Art Aiken, SC -- Today the Department of Energy (DOE) made available the Final Request for Proposals (RFP) for the acquisition of services to design, construct, and commission a facility to process the salt portion of high-level radioactive waste currently stored in underground tanks at the Savannah River Site (SRS). The Salt Waste Processing Facility Final RFP (DE-RP09-02SR22210) is available at the DOE Public Reading Room at the Gregg-Graniteville Library at the University of South Carolina-Aiken in Aiken, South Carolina, or via the Internet at http://e-center.doe.gov. The Final RFP identifies Caustic Side Solvent Extraction as the preferred technology for the cesium separation process, consistent with the Savannah River Site Salt Processing Alternatives Final Supplemental Environmental Impact Statement and the subsequent Record of Decision issued in October 2001.

Note: This page contains sample records for the topic "js rogers sr" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Rogers County, Oklahoma: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Rogers County, Oklahoma: Energy Resources Rogers County, Oklahoma: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 36.3898068°, -95.6457951° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":36.3898068,"lon":-95.6457951,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

42

Roger Mills County, Oklahoma: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Roger Mills County, Oklahoma: Energy Resources Roger Mills County, Oklahoma: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 35.616176°, -99.634135° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":35.616176,"lon":-99.634135,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

43

E-Print Network 3.0 - acropyga roger hymenoptera Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

to describe "the first species of Pyramica Roger, 1862 (Formicidae: Hymenoptera) from Suriname." The first... -64 (2008) www.mapress.comzootaxa New synonyms in neotropical...

44

SR 2006 News Releases  

NLE Websites -- All DOE Office Websites (Extended Search)

Waste Storage Building 2 Ceremony Announcement SR-06-02 Start up of Second Nuclear Waste Storage Facility at SRS SR-06-03 DOE Safely Reaches DNFSB Stabilization Milestone...

45

8232 Federal Register / Vol. 74, No. 35 / Tuesday, February 24, 2009 / Notices March 18, 6:30 p.m ....................... Rogers City, MI ............................. Presque Isle District Library, 181 East Erie Street, Rogers City, MI  

E-Print Network (OSTI)

.m ....................... Rogers City, MI ............................. Presque Isle District Library, 181 East Erie Street, Rogers City, MI 49779. March 19, 6:30 p.m ....................... Harrisville, MI ............................... Harrisville Courthouse, 106 North 5th Street, Harrisville, MI 48740. March 20, 2 p

46

The Honorable Harold Rogers The Honorable Daniel K. Inouye  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Washington, DC 20585 (enter date here, centered) The Honorable Harold Rogers The Honorable Daniel K. Inouye Chairman, Committee on Appropriations Chairman, Committee on Appropriations U.S. House of Representatives U.S. Senate Washington, DC 20515 Washington, DC 20510 The Honorable Rodney P. Frelinghuysen The Honorable Dianne Feinstein Chairman, Subcommittee on Energy Chairman, Subcommittee on Energy and Water Development and Water Development Committee on Appropriations Committee on Appropriations U.S. House of Representatives U.S. Senate Washington, DC 20515 Washington, DC 20510 Subject: Notification of Pending Contract Award, or Public Announcement of Selected Applications for Negotiation of Financial Assistance Awards, or Pending Financial

47

LANL Researcher Roger Wiens Discusses ChemCam  

ScienceCinema (OSTI)

Discussion of the ChemCam instrument on the Curiosity Rover that occurred during the NASA press conference prior to launch of the Mars Science Laboratory. The ChemCam instrument was developed by Los Alamos National Laboratory and the French Space Institute. Los Alamos National Laboratory researcher Roger Wiens discusses the instrument on this video. ChemCam uses a laser to "zap" features of the Martian landscape and then uses a spectrometer to gather information about the composition of the sample. ChemCam will help the Curiosity Rover determine whether Mars is or was habitable. The Rover is expected to touch down on the Red Planet on August 5, 2012.

Wiens, Roger

2014-08-12T23:59:59.000Z

48

Publications of L C G Rogers: 1. `The interrelations between Moire patterns, contour fringes, optical sufaces and their  

E-Print Network (OSTI)

, optical sufaces and their sum and difference effects' (with G. L. Rogers), Optica Acta 24, 1977, 15­22. 2

49

DOE - Office of Legacy Management -- Rogers Iron Works Co - MO 10  

Office of Legacy Management (LM)

Rogers Iron Works Co - MO 10 Rogers Iron Works Co - MO 10 FUSRAP Considered Sites Site: ROGERS IRON WORKS CO. (MO.10 ) Elimination from consideration under FUSRAP Designated Name: Not Designated Alternate Name: Rogers Iron Co. MO.10-1 Location: Joplin , Missouri MO.10-1 Evaluation Year: 1990 MO.10-2 MO.10-3 Site Operations: Tested C-liner crushing methods. MO.10-1 Site Disposition: Eliminated - Potential for contamination considered remote based on limited quantities of material handled MO.10-3 MO.10-4 Radioactive Materials Handled: Yes Primary Radioactive Materials Handled: Uranium (Trace Amounts) MO.10-2 Radiological Survey(s): None Indicated Site Status: Elimination from consideration under FUSRAP Also see Documents Related to ROGERS IRON WORKS CO. MO.10-1 - National Lead Company of Ohio Analytical Data Sheet 9908;

50

Design Computing and Cognition DCC'12. J.S. Gero (ed), pp. xx-yy. Springer 2012  

E-Print Network (OSTI)

Design Computing and Cognition DCC'12. J.S. Gero (ed), pp. xx-yy. © Springer 2012 1 Role Grenoble, F-38031, France Elicitation of requirements is a key step of the design activity. The building of a shared understanding of design requirements is essential to the performance of the design. Personas

Paris-Sud XI, Université de

51

Design Computing and Cognition DCC'12. J.S. Gero (ed), pp. xx-yy. Springer 2012  

E-Print Network (OSTI)

Design Computing and Cognition DCC'12. J.S. Gero (ed), pp. xx-yy. © Springer 2012 1 Understanding Analogical Reasoning in Biomimetic Design: An Inductive Approach Hyunmin Cheong, Gregory Hallihan, and L designers ap- ply biological analogies to solve design problems. We recorded the discourse of fourth

Shu, Lily H.

52

Gas Spring Losses in Linear Clearance Seal Compressors P.B. Bailey, M.W. Dadd, J.S. Reed*  

E-Print Network (OSTI)

1 Gas Spring Losses in Linear Clearance Seal Compressors P.B. Bailey, M.W. Dadd, J.S. Reed* , C. Stevenage, U.K. Thomas M. Davis Air Force Research Laboratory Kirtland AFB, New Mexico, U.S.A ABSTRACT investigations on conventional crank driven reciprocating compressors, where the use of normal sliding seals

53

CORBA-JS: An Open-Standards Framework for Distributed Object Computing over the Web Tejal B. Parulekar1  

E-Print Network (OSTI)

CORBA-JS: An Open-Standards Framework for Distributed Object Computing over the Web Tejal B technological limitations, DOC was traditionally unavailable in Web-based applications (i.e., stateful applications that communicate over HTTP, and are accessible via a Web browser) without the use of proprietary

Zhou, Yaoqi

55

Name Class PMAJ1 Abbas, Sami F SR MEE  

E-Print Network (OSTI)

Earl SR MEE Frey, Jeanette M SR CVE Friedman, Andrew David SR SYE Fujita, Naoki SR AEE Galvan, Ruben A SR ELE Hardine, Kyle W SR SYE Harper, John Louis SR MEE Heideman, Kyle SR OSE Held, Ethan Samuel SR Horton, Alan A SR CVE Hsu, Kevin SR MEE Hughes, John S SR ELE Hummel, Ryan M SR CVE Hung, Meng-han UNC

Wong, Pak Kin

56

Microsoft PowerPoint - Roger Berglund.ppt  

NLE Websites -- All DOE Office Websites (Extended Search)

KANTHAL APMT(tm) KANTHAL APMT(tm) material presentation Roger Berglund Sandvik Materials Technology Sandvik Materials Technology KANTHAL APMT(tm) material presentation Sandvik Group - a global leader Three business areas Invoicing MSEK Employees 19 078 32 621 15 328 15 296 14 429 8 246 31 Dec. 2009 Sandvik Tooling Sandvik Mining and Construction Sandvik Materials Technology Sandvik Materials Technology KANTHAL APMT(tm) material presentation SANDVIK GROUP Sandvik Tooling Tools and tooling systems for metal cutting, blanks and components. Sandvik Mining & Construction Equipment, tools and services for mining and construction. Sandvik Materials Technology Stainless steel and special alloy products for niche applications, resistance materials and steel belt process systems. Tube Strip Wire and Heating

57

Science Showcase: George F. Smoot and Roger D. Kornberg | OSTI, US Dept of  

Office of Scientific and Technical Information (OSTI)

Science Showcase: George F. Smoot and Roger D. Kornberg Science Showcase: George F. Smoot and Roger D. Kornberg Feature Archive George Smoot George F. Smoot won the 2006 Nobel Prize in Physics. George F. Smoot and Roger D. Kornberg have joined the growing list of Nobel Laureates associated with DOE. Smoot won the 2006 Nobel Prize in Physics for his work in blackbody and anisotropy of the cosmic microwave background radiation. Smoot is an astrophysicist at DOE's Lawrence Berkeley National Lab and a UC Berkeley physics professor. He shared the award with John C. Mather of NASA Goddard Space Flight Center. Roger D. Kornberg of Stanford University won the 2006 Nobel Prize in Chemistry for his studies of the molecular basis of eukaryotic transcription. A significant portion of Kornberg's research leading to this prize was performed at the Stanford Synchrotron Radiation Laboratory

58

Genome sequence of the flexirubin-pigmented soil bacterium Niabella soli type strain (JS13-8T)  

SciTech Connect

Niabella soli Weon et al. 2008 is a member of the Chitinophagaceae, a family within the class Sphingobacteriia that is poorly characterized at the genome level, thus far. N. soli strain JS13-8T is of interest for its ability to produce a variety of glycosyl hydrolases. The ge- nome of N. soli strain JS13-8T is only the second genome sequence of a type strain from the family Chitinophagaceae to be published, and the first one from the genus Niabella. Here we describe the features of this organism, together with the complete genome sequence and annotation. The 4,697,343 bp long chromosome with its 3,931 protein-coding and 49 RNA genes is a part of the Genomic Encyclopedia of Bacteria and Archaea project.

Anderson, Iain [U.S. Department of Energy, Joint Genome Institute; Munk, Christine [U.S. Department of Energy, Joint Genome Institute; Lapidus, Alla L. [U.S. Department of Energy, Joint Genome Institute; Nolan, Matt [U.S. Department of Energy, Joint Genome Institute; Lucas, Susan [U.S. Department of Energy, Joint Genome Institute; Tice, Hope [U.S. Department of Energy, Joint Genome Institute; Glavina Del Rio, Tijana [U.S. Department of Energy, Joint Genome Institute; Cheng, Jan-Fang [U.S. Department of Energy, Joint Genome Institute; Han, Cliff [Los Alamos National Laboratory (LANL); Tapia, Roxanne [Los Alamos National Laboratory (LANL); Goodwin, Lynne A. [Los Alamos National Laboratory (LANL); Pitluck, Sam [U.S. Department of Energy, Joint Genome Institute; Liolios, Konstantinos [U.S. Department of Energy, Joint Genome Institute; Mavromatis, K [U.S. Department of Energy, Joint Genome Institute; Pagani, Ioanna [U.S. Department of Energy, Joint Genome Institute; Mikhailova, Natalia [U.S. Department of Energy, Joint Genome Institute; Pati, Amrita [U.S. Department of Energy, Joint Genome Institute; Chen, Amy [U.S. Department of Energy, Joint Genome Institute; Palaniappan, Krishna [U.S. Department of Energy, Joint Genome Institute; Land, Miriam L [ORNL; Rohde, Manfred [HZI - Helmholtz Centre for Infection Research, Braunschweig, Germany; Tindall, Brian [DSMZ - German Collection of Microorganisms and Cell Cultures GmbH, Braunschweig, Germany; Goker, Markus [DSMZ - German Collection of Microorganisms and Cell Cultures GmbH, Braunschweig, Germany; Detter, J. Chris [U.S. Department of Energy, Joint Genome Institute; Woyke, Tanja [U.S. Department of Energy, Joint Genome Institute; Bristow, James [U.S. Department of Energy, Joint Genome Institute; Eisen, Jonathan [U.S. Department of Energy, Joint Genome Institute; Markowitz, Victor [U.S. Department of Energy, Joint Genome Institute; Hugenholtz, Philip [U.S. Department of Energy, Joint Genome Institute; Kyrpides, Nikos C [U.S. Department of Energy, Joint Genome Institute; Klenk, Hans-Peter [DSMZ - German Collection of Microorganisms and Cell Cultures GmbH, Braunschweig, Germany; Ivanova, N [U.S. Department of Energy, Joint Genome Institute

2012-01-01T23:59:59.000Z

59

SN 2009js AT THE CROSSROADS BETWEEN NORMAL AND SUBLUMINOUS TYPE IIP SUPERNOVAE: OPTICAL AND MID-INFRARED EVOLUTION  

SciTech Connect

We present a study of SN 2009js in NGC 918. Multi-band Kanata optical photometry covering the first {approx}120 days shows the source to be a Type IIP SN. Reddening is dominated by that due to our Galaxy. One-year-post-explosion photometry with the New Technology Telescope and a Subaru optical spectrum 16 days post-discovery both imply a good match with the well-studied subluminous SN 2005cs. The plateau-phase luminosity of SN 2009js and its plateau duration are more similar to the intermediate luminosity IIP SN 2008in. Thus, SN 2009js shares characteristics with both subluminous and intermediate luminosity supernovae (SNe). Its radioactive tail luminosity lies between SN 2005cs and SN 2008in, whereas its quasi-bolometric luminosity decline from peak to plateau (quantified by a newly defined parameter {Delta}logL, which measures adiabatic cooling following shock breakout) is much smaller than both the others'. We estimate the ejected mass of {sup 56}Ni to be low ({approx}0.007 M{sub Sun }). The SN explosion energy appears to have been small, similar to that of SN 2005cs. SN 2009js is the first subluminous SN IIP to be studied in the mid-infrared. It was serendipitously caught by Spitzer at very early times. In addition, it was detected by WISE 105 days later with a significant 4.6 {mu}m flux excess above the photosphere. The infrared excess luminosity relative to the photosphere is clearly smaller than that of SN 2004dj, which has been extensively studied in the mid-infrared. The excess may be tentatively assigned to heated dust with mass {approx}3 Multiplication-Sign 10{sup -5} M{sub Sun }, or to CO fundamental emission as a precursor to dust formation.

Gandhi, P. [Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, chuo-ku, Sagamihara, Kanagawa 252-5210 (Japan); Yamanaka, M.; Itoh, R. [Department of Physical Science, Hiroshima University, Kagamiyama 1-3-1, Higashi-Hiroshima 739-8526 (Japan); Tanaka, M. [National Astronomical Observatory, Mitaka, Tokyo (Japan); Nozawa, T.; Maeda, K.; Moriya, T. J. [Kavli Institute for the Physics and Mathematics of the Universe, University of Tokyo, Kashiwa (Japan); Kawabata, K. S. [Hiroshima Astrophysical Science Center, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8526 (Japan); Saviane, I. [European Southern Observatory, Alonso de Cordova 3107, Santiago 19 (Chile); Hattori, T. [Subaru Telescope, National Astronomical Observatory of Japan, Hilo, HI 96720 (United States); Sasada, M. [Department of Astronomy, Graduate School of Science, Kyoto University, Kyoto 606-8502 (Japan)

2013-04-20T23:59:59.000Z

60

In: The Visual Neurosciences, L.M. Chalupa, J.S. Werner, Eds. MIT Press, 2003: 1603-1615. Principles of Image Representation in Visual Cortex  

E-Print Network (OSTI)

In: The Visual Neurosciences, L.M. Chalupa, J.S. Werner, Eds. MIT Press, 2003: 1603 representation #12;in area V1 in terms of a probabilistic model of natu- ral scenes. Section 2 will first provide

Olshausen, Bruno

Note: This page contains sample records for the topic "js rogers sr" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Long Term Dynamics of Inequalities between French Households concerning Automobile COLLET, Roger; BOUCQ, Elise; MADRE, Jean-Loup; HIVERT, Laurent.  

E-Print Network (OSTI)

Long Term Dynamics of Inequalities between French Households concerning Automobile COLLET, Roger TERM DYNAMICS OF INEQUALITIES BETWEEN FRENCH HOUSEHOLDS CONCERNING AUTOMOBILE Roger Collet, INRETS of automobile. As the curves representing car ownership (number of cars per adult) and car use (annual mileage

Paris-Sud XI, Université de

62

Scientific Comment by Roger Pielke Sr. and Tom Chase with Input from John Christy and Tony Reale  

E-Print Network (OSTI)

entered the short 15-year data stream, it was considered inadequate for trend estimation-601. Stendel et al. clearly shows the abrupt shifts in ERA-15 at the time new satellites entered the mix long term trend values whether adjusted for instrument changes or not because there is a relatively

Pielke, Roger A.

63

Planipes: Mobile Foot Pressure Analysis Samuel Pfaffen, Philipp Sommer, Christian Stocker, Roger Wattenhofer, and Samuel Welten  

E-Print Network (OSTI)

Planipes: Mobile Foot Pressure Analysis Samuel Pfaffen, Philipp Sommer, Christian Stocker, Roger drawback: They are non-mobile or at least obtrusive and therewith in- fluence the measurement. In the case have implemented Planipes, a mobile and versatile foot pressure measurement platform. It consists

64

Your Next Mobile Phone! Distributed Computing, ETH Zurich, www.disco.ethz.ch Roger Wattenhofer  

E-Print Network (OSTI)

Your Next Mobile Phone! Distributed Computing, ETH Zurich, www.disco.ethz.ch Roger Wattenhofer #12 Touch screen #12;[Fahrni et al., 2011] [Sommer et al., 2012] #12;The future of mobile phones? #12;#12;It's the software... #12;#12;Participatory Sensing = Web 2.0 Mobile #12;#12;#12;Monday #12;Monday #12;Monday #12

65

A contact theory for surface tension driven systems Roger A. Sauer 1  

E-Print Network (OSTI)

A contact theory for surface tension driven systems Roger A. Sauer 1 Aachen Institute for Advanced description for the contact of surface tension driven sys- tems. The example system of a liquid droplet liquids or two solids in contact. The surface kinematics, essential to the modeling of surface tension

66

Video Server on an ATM Connected Cluster of Workstations Olav Sandsta, Stein Langrgen, and Roger Midtstraum  

E-Print Network (OSTI)

Video Server on an ATM Connected Cluster of Workstations Olav Sandst°a, Stein Langørgen, and Roger-7034 Trondheim, Norway folavsa, steinl, rogerg@idi.ntnu.no Abstract Video servers are important for applicationswhich make use of digital video. The video servers should provide better functionality than most

67

Nutrient Limitation across a salinity gradient of Martha's Vineyard Coastal Ponds Emily S Rogers  

E-Print Network (OSTI)

Nutrient Limitation across a salinity gradient of Martha's Vineyard Coastal Ponds Emily S Rogers and their respective salinities were Long Cove Pond, 1ppt, Little Jobs Pond, 4ppt, Jobs Neck Pond, 9ppt, Chilmark Pond. There was a strong correlation between ammonium limitation and salinity. There was very little response

Vallino, Joseph J.

68

Transaction Time Support Inside a Database Engine David Lomet, Roger Barga  

E-Print Network (OSTI)

new data versions, thus maintaining such a com- plete, query-able history of states of the database. 1Transaction Time Support Inside a Database Engine David Lomet, Roger Barga Microsoft Research@cs.nyu.edu Abstract Transaction time databases retain and provide access to prior states of a database. An update

Mokbel, Mohamed F.

69

Gilbert Barragan, Roger Freidline, Stephen Gardner, John K. Southwell, and Scott Wehner  

E-Print Network (OSTI)

) ·Area 26000 Ac ·Cumulative Production 120 MMBO (40% OOIP) ·OOIP ~300 MMBO #12;Postle Field: WF+CO2Gilbert Barragan, Roger Freidline, Stephen Gardner, John K. Southwell, and Scott Wehner Whiting OilResistivity.. HMU PUMU HMAU WHMU SHUCU #12;Postle Field Type Log AA A1 A2 Lower MorrowLower Morrow Upper Morrow

70

Piston-driven flow of highly concentrated suspensions Ralf B. Lukner and Roger T. Bonnecazea)  

E-Print Network (OSTI)

Piston-driven flow of highly concentrated suspensions Ralf B. Lukner and Roger T. Bonnecazea October 1998; final revision received 4 February 1999) Synopsis The piston-driven flow of highly concentrated suspensions 55% or 59% by volume solids of dense spheres was investigated as a function of piston

71

The use and misuse of Vc,max in Earth System Models Alistair Rogers  

E-Print Network (OSTI)

REVIEW The use and misuse of Vc,max in Earth System Models Alistair Rogers Received: 18 November Dordrecht (outside the USA) 2013 Abstract Earth System Models (ESMs) aim to project global change. Central Á Vc,max Á Leaf nitrogen Á Earth System Models Introduction The primary goal of Earth System Models

Rogers, Alistair

72

SR0917.docx  

NLE Websites -- All DOE Office Websites (Extended Search)

(803) 952-7697 Monday, August 10, 2009 (803) 952-7697 Monday, August 10, 2009 james-r.giusti@srs.gov DOE Hosts Public Workshop On Energy Park Concept at the Savannah River Site Aiken, SC (Aug. 8) -- The Department of Energy's (DOE) Savannah River Operations Office (SR) will sponsor a four-hour workshop on the concept of an energy park at the Savannah River Site on August 18, 2009, at the North Augusta Municipal Center, 100

73

US: Muon Spin Resonance (?SR)  

Science Journals Connector (OSTI)

Fig. I.92. US, s.c. ?SR; Zero field muon spectra. Asymmetry, A, vs. ?. (a) Relaxation spectrum at 181 K, i.e. slightly above T ...

R. Tro?

2009-01-01T23:59:59.000Z

74

GPS World -With Racing Heart http://www.gpsworld.com/gpsworld/content/printContentPopup.js... 1 of 6 9/5/06 12:06 PM  

E-Print Network (OSTI)

GPS World - With Racing Heart http://www.gpsworld.com/gpsworld/content/printContentPopup.js... 1 of 6 9/5/06 12:06 PM Waist harness containing GPS receiver and helmet with antenna With Racing Heart of physics. A new Swiss system integrates GPS, video, and biosensors for precise position, velocity and heart

Vetterli, Martin

75

Selection for Growth on 3-Nitrotoluene by 2-Nitrotoluene-Utilizing Acidovorax sp. Strain JS42 Identifies Nitroarene Dioxygenases with Altered Specificities  

Science Journals Connector (OSTI)

...University of California, Davis, CA 95616 Acidovorax sp. strain JS42 uses 2-nitrotoluene as a sole source of carbon and energy. The first enzyme of the degradation pathway, 2-nitrotoluene 2,3-dioxygenase, adds both atoms of molecular oxygen to...

Kristina M. Mahan; Joseph T. Penrod; Kou-San Ju; Natascia Al Kass; Watumesa A. Tan; Richard Truong; Juanito V. Parales; Rebecca E. Parales

2014-10-24T23:59:59.000Z

76

The use of otolith strontium isotopes (87Sr/86Sr) to identify nursery habitat for a threatened estuarine fish  

E-Print Network (OSTI)

9672-3 The use of otolith strontium isotopes ( 87 Sr/ 86 Sr)relationship between strontium isotope ratios ( 87 Sr/ 86indicate that otolith strontium isotopes ( 87 Sr/ 86 Sr) are

Hobbs, James A.; Lewis, Levi S.; Ikemiyagi, Naoaki; Sommer, Ted; Baxter, Randall D.

2010-01-01T23:59:59.000Z

77

ROGER L. COPPLE ATTORNEY AT LAW FIRST NORTHERN PLAZA· P. O.  

Office of Legacy Management (LM)

ROGER ROGER L. COPPLE ATTORNEY AT LAW FIRST NORTHERN PLAZA· P. O. Box 40 SANTA FE, NEW MEXICO 87501 (505) 982-4004 September 10, 1982 Professional Land Surveying 1404 Second Street Santa Fe, New Mexico 87501 ATTN: Gary Dawson Re: Bechtel National, Inc./United States Department of Energy - Contract No. DE-AC05-810R20722-FUSRAP Dear Mr. Dawson: As required by the terms of Purchase Contract No. 14501-01/04- PC-19 which involves the captioned contract I have prepared and en- close the following items: .... 1. Surveyor's Certificate (Exhibit A): This is a modifica- tion of the standard certiiication form',. and it should be used in order that the Survey Plat may be filed for public record in Los Alamos and Santa Fe Counties in accordance with Section l4-8-l6(b), NMSA, 1978. When the plat is recorded, Section 47-1-46, NMSA, 1978, permits descrip- tion of the land by reference to the recorded plat.

78

Delamere-JS  

NLE Websites -- All DOE Office Websites (Extended Search)

E. J. Mlawer, and S. A. Clough Atmospheric and Environmental Research, Inc. Cambridge, Massachusetts K. H. Stamnes Stevens Institute of Technology Hoboken, New Jersey...

79

A Review of "The Honourable Roger North, 1651-1734: On Life, Morality, Law and Tradition" by Jamie C. Kassler  

E-Print Network (OSTI)

refer- ence volume. Jamie C. Kassler. The Honourable Roger North, 1651-1734: On Life, Morality, Law and Tradition. Farnham, Surrey, UK: Ashgate Publishing Limited, 2009. xvii + 466 pp. + 8 illus. $114.95. Review by ellen j. jenkins, arkansas tech...

Jenkins, Ellen J.

2011-01-01T23:59:59.000Z

80

Utility Scale Wind Turbines on a Grid Connected Island Mohit Dua, Anthony L. Rogers, James F. Manwell,  

E-Print Network (OSTI)

Utility Scale Wind Turbines on a Grid Connected Island Mohit Dua, Anthony L. Rogers, James F utility scale wind turbines on Fox Islands, located 12 miles from the coast of Maine in the United States of electricity itself. Three locations are analyzed in detail as potential sites for wind turbine installations

Massachusetts at Amherst, University of

Note: This page contains sample records for the topic "js rogers sr" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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to obtain the most current and comprehensive results.


81

When politicians distort science By Robert Socolow, Roger A. Pielke, Jr. , and Randy Olson | 20 October 2011  

E-Print Network (OSTI)

When politicians distort science By Robert Socolow, Roger A. Pielke, Jr. , and Randy Olson | 20 October 2011 Republican presidential candidate and Texas Gov. Rick Perry recently questioned the science to the political distortion -- or even outright rejection -- of science? In coming weeks, three Bulletin experts

82

High spin states in 93Sr  

Science Journals Connector (OSTI)

Twenty-one ? transitions in 93Sr were identified from ?-?-? coincidences in the spontaneous fission of 252Cf starting with the previously known three transitions in 93Sr. The level structure of this nucleus is interpreted in part as arising from the weak coupling of the 1d5/2 neutron hole to the yrast states of the 94Sr core. We have tried to give a quantitative description of the properties of 93Sr by performing a shell-model study in which we assume that 88Sr is a closed core. In this study we have also considered the neighboring isotopes 90,92,94Sr. The calculated spectra have been compared with the experimental data.

J. K. Hwang; A. V. Ramayya; J. H. Hamilton; Y. X. Luo; J. O. Rasmussen; C. J. Beyer; P. M. Gore; S. C. Wu; I. Y. Lee; C. M. Folden; III; P. Fallon; P. Zielinski; K. E. Gregorich; A. O. Macchiavelli; M. A. Stoyer; S. J. Asztalos; T. N. Ginter; R. Donangelo; L. Coraggio; A. Covello; A. Gargano; N. Itaco

2003-01-27T23:59:59.000Z

83

SR????  

NLE Websites -- All DOE Office Websites (Extended Search)

28, 2006 Media Contact: James Giusti (803) 952-7697 Note To Editors and News Directors: Aiken, SC On Thursday, November 30, U.S. Department of Energy Assistant Secretary for...

84

High Power Testing of a 17 GHz Photocathode RF Gun S.C. Chen, B.G. Danly, J. Gonichon, C.L. Lin, R.J. Temkin, S.R. Trotz, J.S. Wurtele,  

E-Print Network (OSTI)

High Power Testing of a 17 GHz Photocathode RF Gun S.C. Chen, B.G. Danly, J. Gonichon, C.L. Lin, R photocathode gun. The 11 2 cell, -mode, copper cavity was tested with 5-10 MW, 100 ns, 17.145 GHz pulses from without breakdown, a compact system, and high brightness. While existing RF guns operate from 144 M Hz

Wurtele, Jonathan

85

1.7 Gbit/in.2 gray-scale continuous-phase-change femtosecond image storage Q. Wang, J. Maddock, E. T. F. Rogers, T. Roy, C. Craig, K. F. Macdonald, D. W. Hewak, and N. I. Zheludev  

E-Print Network (OSTI)

. T. F. Rogers, T. Roy, C. Craig, K. F. Macdonald, D. W. Hewak, and N. I. Zheludev Citation: Applied-phase-change femtosecond image storage Q. Wang,1,2,a) J. Maddock,1 E. T. F. Rogers,1 T. Roy,1 C. Craig,1 K. F. Macdonald,1

Zheludev, Nikolay

86

Interface mechanics of adhesiveless microtransfer printing processes H.-J. Kim-Lee, A. Carlson, D. S. Grierson, J. A. Rogers, and K. T. Turner  

E-Print Network (OSTI)

electronics, advanced packaging schemes, and complex 3D microstructures that cannot be realizedInterface mechanics of adhesiveless microtransfer printing processes H.-J. Kim-Lee, A. Carlson, D microtransfer printing processes H.-J. Kim-Lee,1,a) A. Carlson,2 D. S. Grierson,1,b) J. A. Rogers,2 and K. T

Rogers, John A.

87

Hello I'm Roger safety in today's Thursday, July 18 and you're listening to the information security news podcast brought to you by Northwestern University  

E-Print Network (OSTI)

Hello I'm Roger safety in today's Thursday, July 18 and you're listening to the information that his face instantly sold them to cells out there and these devices are available for all the different by next year that's a lot another thing is you buy a device like this should put it on you network it you

Shahriar, Selim

88

Hello I'm Roger safety in today's Thursday, August 1 and you're listening to the information security news podcast brought to you by Northwestern University  

E-Print Network (OSTI)

Hello I'm Roger safety in today's Thursday, August 1 and you're listening to the information it they all calm with all sorts of software built into one that's phoning home you know to keep track of your for second here the Pentagon says that Asian spies were Asian spies are are targeting the radiation hardened

Shahriar, Selim

89

This article appears in the Proceedings of the Connecticut College Symposium on Art and Technology, 2001. Copyright 2001, by Roger Dannenberg and Rob Fisher.  

E-Print Network (OSTI)

Production on the Brain Roger Dannenberg and Rob Fisher Studio for Creative Inquiry Carnegie Mellon. A multimedia planetarium show, "Gray Matters: The Brain Movie," was created to teach fundamental scientific concepts about the human brain. During the show, the planetarium dome represents a giant brain enclosing

Dannenberg, Roger B.

90

Mr. Rogers and Darth Vader The captains of industry, perhaps more than anyone else, have the ability to solve the global  

E-Print Network (OSTI)

the ability to solve the global warming problem, so they deserve attention. But different strategies much. And the words in Duke newspaper ads ["Cliffside (coal-fired power plant) ­ Good "carbon offsets" to "balance" their carbon emissions. Mr. Rogers, in using the rationale that new coal

Hansen, James E.

91

UMASS MINI-CODES FOR WIND ENERGY ENGINEERING APPLICATIONS J. F. Manwell, A. L. Rogers, J. G. McGowan, U. Abdulwaid  

E-Print Network (OSTI)

UMASS MINI-CODES FOR WIND ENERGY ENGINEERING APPLICATIONS J. F. Manwell, A. L. Rogers, J. G. Mc that these codes will be used for educational purposes, or for general use by the wind energy engineering community. ~TRODUCTIO~ BACKGROUND Computer codes are a valuable tool for practicing wind energy engineers. Wind

Massachusetts at Amherst, University of

92

Process removes Sr from nuclear wastes  

Science Journals Connector (OSTI)

Process removes Sr from nuclear wastes ... Scientists at Argonne National Laboratory have devised a chemical process for extracting and recovering strontium-90 from liquid nuclear wastes. ... Argonne chemist E. Philip Horwitz, head of the team, says it could be a significant aid in managing such radioactive wastes. ...

WARD WORTHY

1990-09-10T23:59:59.000Z

93

Hello I'm Roger safety in today's Thursday, March 28 and you're listening to the information security news podcast brought to you by Northwestern University  

E-Print Network (OSTI)

Hello I'm Roger safety in today's Thursday, March 28 and you're listening to the information with that with this key and it it looks like they're only, send it to trusted devices and at least a way that am reading this trusted devices are Apple devices in us if you got an Apple device you're okay if got a Windows device you

Shahriar, Selim

94

Could pseudogenes be widespread in ants? Evidence of numts in the leafcutter ant Acromyrmex striatus (Roger, 1863) (Formicidae: Attini)  

Science Journals Connector (OSTI)

Abstract The incorporation of fragments of mitochondrial DNA (mtDNA) in the nuclear genome, known as numts (nuclear mitochondrial pseudogenes), undermines general assumptions concerning the use of mtDNA in phylogenetic and phylogeographic studies. Accidental amplifications of these nuclear copies instead of the mitochondrial target can lead to crucial misinterpretations, thus the correct identification of numts and their differentiation from true mitochondrial sequences are important in preventing this kind of error. Our goal was to describe the existence of cytochrome b (cytb) numts in the leafcutter ant Acromyrmex striatus (Roger, 1863). PCR products were directly sequenced using a pair of universal primers designed to amplify the cytb gene of these insects. Other species of leafcutter ants were also sequenced. The sequences were analyzed and the numts were identified by the presence of double peaks, indels and premature stop codons. Only A.striatus clearly showed the presence of numts, while the other species displayed the expected amplification of the mtDNA cytb gene target using the same primer pair. We hope that our report will highlight the benefits and challenges of using mtDNA in the molecular phylogenetic reconstruction and phylogeographic studies of ants, while establishing the importance of numts reports for future studies.

Maykon Passos Cristiano; Danon Clemes Cardoso; Tnia Maria Fernandes-Salomo

2014-01-01T23:59:59.000Z

95

Chicane Status Chris RogersChris Rogers,  

E-Print Network (OSTI)

Beam Power #12;8 Beam Energy Before Chicane #12;9 Beam Energy After Chicane and absorber Origin? #12;10 Beam Energy After Cooler Origin? #12;11 Open Issues Can we recover lost performance in G4BL? Running beam power lost for different particle species Examine energy spectrum ­ propose enhanced particle

McDonald, Kirk

96

Brookhaven National Laboratory - Sr90 - Chemical Holes | Department...  

Office of Environmental Management (EM)

Other Contaminants? No Tritium Present? No Nitrates Present? No Sulfates Present? No Isotope Name Concentration (pCil) Regulatory Driver Cleanup Requirement Sr 150 Yes 8...

97

Automated radioanalytical system for the determination of Sr...  

NLE Websites -- All DOE Office Websites (Extended Search)

of Sr-90 in environmental water samples by Y-90 Cherenkov radiation Abstract: Strontium-90 is an environmental contaminant at several U.S. Department of Energy sites,...

98

Carrier-Controlled Ferromagnetism in SrTiO3  

Magnetotransport and superconducting properties are investigated for uniformly La-doped SrTiO3 films and GdTiO3/SrTiO3 heterostructures, respectively. GdTiO3/SrTiO3 interfaces exhibit a high-density 2D electron gas on the SrTiO3 side of the interface, while, for the SrTiO3 films, carriers are provided by the dopant atoms. Both types of samples exhibit ferromagnetism at low temperatures, as evidenced by a hysteresis in the magnetoresistance. For the uniformly doped SrTiO3 films, the Curie temperature is found to increase with doping and to coexist with superconductivity for carrier concentrations on the high-density side of the superconducting dome. The Curie temperature of the GdTiO3/SrTiO3 heterostructures scales with the thickness of the SrTiO3 quantum well. The results are used to construct a stability diagram for the ferromagnetic and superconducting phases of SrTiO3.

Moetakef, Pouya; Williams, James R.; Ouellette, Daniel G.; Kajdos, Adam P.; Goldhaber-Gordon, David; Allen, S. James; Stemmer, Susanne

2012-06-01T23:59:59.000Z

99

Gunsch Jesse Andrew SR COE Spring 2009 Dean's List With Distinction  

E-Print Network (OSTI)

Benjamin SO NMS Kanjiyani, Shezaan Sultan JR MEE Keilty, Conor B SR EMG Keller, Sean David JR OSE Khatri, Phat Tien JR OSE Manasse, Adam Mckinley SR CHE May, James Thomas JR ELE Mcfarland, Ryan Jeffery SR CHE

Wong, Pak Kin

100

Band Structure of {sup 85}Sr  

SciTech Connect

High spin states in {sup 85}Sr were populated using the reaction {sup 76}Ge({sup 13}C, 4n) at a beam energy of 52 MeV. Gamma-gamma coincidence measurements along with investigation of directional correlation ratios were utilized to establish the extended level scheme upto I{sup {pi}}= (35/2{sup -}). One of the positive parity states observed at 3383.3 keV ((I{sup {pi}}= 19/2{sup (+)}) may be considered as a magnetic rotational ({Delta}I = 1) band, the negative parity states built on 3028.0 level show an irregular behaviour and does not exhibit magnetic rotation.

Kumar, Suresh; Mandal, S. K. [Department of Physics and Astrophysics, University of Delhi, Delhi-110007 (India); Jain, A. K. [Department of Physics, Indian Institute of Technology, Roorkee-247667 (India); Chaturvedi, L. [Guru Ghasidas University, Bilaspur, Chhattisgarh-495009 (India); Sinha, Rishi Kumar [Department of Physics, Banaras Hindu University, Varanasi-221005 (India); Negi, Dinesh; Dhal, Ankul; Kumar, R.; Singh, R. P.; Muralithar, S.; Bhowmik, R. K.; Pancholi, S. C. [Inter University Accelerator Centre, Aruna Asaf Ali Marg, Delhi-110067 (India)

2010-11-24T23:59:59.000Z

Note: This page contains sample records for the topic "js rogers sr" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

History of development and depositional environment and upper Cherokee Prue Sand, Custer and Roger Mills counties, Oklahoma  

SciTech Connect

In western Oklahoma the uppermost sand member of the Cherokee Group, the True sand, was first drilled and found productive in two discoveries, completed in 1980, in west-central Custer County and in central Roger Mills County, Oklahoma. For 1 1/2 to 2 years these two discoveries, some 18 mi (29 km) apart, were thought to be stratigraphic equivalents of two separate sand bodies occurring parallel to the classic northwest-southeast-trending systems of the Anadarko basin. At present, some 40 productive wells will ultimately produce more than 100 bcf of gas and 3 million bbl of condensate from an average depth of 11,500 ft (3500 m). Sand porosities range from 3 to 18% with most producing wells having porosities in the 12 to 15% range. Because Prue sand is slightly overpressured (a pressure gradient of .53 psi/foot), the reserves are generally better than normal-pressured wells at this depth. The sand body is over 40 mi (64 km) in length, 1 to 1.5 mi (1.6 to 2.4 km) wide, and 60 ft (18 m) thick. Study of the core shows the interval to grade from a medium to fine-grained sand, highly laminated and cross-bedded with black shale, to a slightly coarser grained nonstructured interval and back into a highly laminated cross-bedded sandy black shale interval. The interval is topped by a 10 ft (3 m) thick black shale layer that is a predominant bed throughout the whole area. These conclusions have implications that may assist in the exploration of other Pennsylvanian sands in this area.

Baumann, D.K.; Peterson, M.L.; Hunter, L.W.

1983-03-01T23:59:59.000Z

102

2010 Annual Workforce Analysis and Staffing Plan Report - SR  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

OOEF Jl2$U OOEF Jl2$U United States Government Department of Energy (DOE) memorandum Savannah River Operations Office (SR) DATE: REPLY TO ATTN OF: SUBJECT: JAN 2 6 2011 MGR (Moody/(803) 952-9468) Annual Workforce Analysis and Staffing Plan Report for Calendar Year 2010- 10-NA SC-09 TO: Karen L. Boardman, Chairperson, Federal Technical Capability Panel The Calendar Year 2010 DOE-SR Workforce Analysis and Staffing Plan Report is attached. This analysis was conducted in conjunction with the development of the DOE-SR 5-Year Workforce Management Plan. If you have any questions, please contact me or have your staff contact Mr. Edgar Gates at 803-952-9227 or Mr. Lee Moody at 803-952-5978. MGR:LHM:bcp OHCM-11-1053 Attachment: DOE-SR Annual Workforce Analysis and Staffing Plan Report

103

2012 Annual Workforce Analysis and Staffing Plan Report - SR  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

lllS.81 lllS.81 United States Government Department of Energy (DOE\ memorandum Savannah River Operations Office (SR) DATE: REPLY TO ATINOF: FEB 132811: MGR (Moody/(803) 952-9468) SUBJECT: Annual Workforce Analysis and Staffing Plan Report for Calendar Year 2012 To: Karen L. Boardman, Chairperson, Federal Technical Capability Panel The Calendar Year 2012 DOE-SR Workforce Analysis and Staffing Plan Report is attached. This analysis was conducted in conjunction with the development of the DOE-SR 5-Y ear Workforce Management Plan. If you have any questions, please contact me or have your staff contact Mr. Edgar Gates at 803-952-9227 or Mrs. Deanna Yates at 803-952-6925. MGR:EG:lec OHCM-13-0025 Attachment: DOE-SR Annual Workforce Analysis and Staffing Plan Report

104

2011 Annual Workforce Analysis and Staffing Plan Report - SR  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

# # United States Government Department of Energy (DOE) memorandum Savannah River Operations Office (SR) DATE: REPLY TO ATTN OF: SUBJECT: JAN 2 O 2012 MGR (Moody/(803) 952-9468) Annual Workforce Analysis and Staffing Plan Report for Calendar Year 2011 - 10-NA SC-09 TO: Karen L. Boardman, Chairperson, Federal Technical Capability Panel The Calendar Year 2011 DOE-SR Workforce Analysis and Staffing Plan Report is attached. This analysis was conducted in conjunction with the development of the DOE-SR 5-Year Workforce Management Plan. If you have any questions, please contact me or have your staff contact Mr. Edgar Gates at 803-952-9227 or Mr. Lee Moody at 803-952-5978. MGR:EG:bcp OHCM-12-1035 Attachment: DOE-SR Annual Workforce Analysis and Staffing Plan Report

105

VBH-0083- In the Matter of S.R. Davis  

Energy.gov (U.S. Department of Energy (DOE))

S.R. Davis (the Employee) filed a complaint against her former employer, Fluor Fernald, Inc. (the Contractor) under the Department of Energy (DOE) Contractor Employee Protection Program, 10 C.F.R....

106

VBA-0083- In the Matter of S.R. Davis  

Energy.gov (U.S. Department of Energy (DOE))

This Decision considers an Appeal of an Initial Agency Decision (IAD) issued on April 21, 2004, involving a complaint filed by S.R. Davis (also referred to as the Complainant) under the Department...

107

Seasonal dripwater Mg/Ca and Sr/Ca variations driven by cave ventilation: Implications for and modeling  

E-Print Network (OSTI)

Seasonal dripwater Mg/Ca and Sr/Ca variations driven by cave ventilation: Implications of Mg/ Ca (and Sr/Ca) and Sr isotopes is key in delineating whether Mg/Ca and Sr/Ca variations seasonal variations in dripwater Mg/Ca and Sr/Ca, whereas the other drip sites do not. In contrast

Banner, Jay L.

108

U. S. Department of Energy Savannah River Operations Office - DOE-SR News  

NLE Websites -- All DOE Office Websites (Extended Search)

Releases Releases DOE-SR News Releases GROUTING TO BEGIN TOMORROW ON TWO ADDITIONAL SRS WASTE TANKS SR-2013-08 Adobe Acrobat PDF PARSONS' SALT WASTE PROCESSING FACILITY PROJECT EARNS DOE VOLUNTARY PROTECTION PROGRAM MERIT AWARD SR-2013-07 Adobe Acrobat PDF Public Comment Sought for Savannah River Site Workforce Restructuring Plan SR-2013-06 Adobe Acrobat PDF Savannah River Site Citizens Advisory Board Seeking New Members SR-2013-05 Adobe Acrobat PDF Salt Waste Processing Facility: New Leadership SR-2013-04 Adobe Acrobat PDF Savannah River Site Exceeds Waste Shipment Goals SR-2013-03 Adobe Acrobat PDF Savannah River Operations Office Honors Federal Manager of the Year SR-2013-02 Adobe Acrobat PDF SRS Advisory Board to Hold Augusta Public Meeting March 25-26 SR-2013-01 Adobe Acrobat PDF

109

Superlattice Structure and Precipitates in O+ and Zr+ Ion Coimplanted SrTiO3: a Model Waste Form for 90Sr  

SciTech Connect

We investigate strontium titanate as a model waste form for 90Sr. Implantation with O+ and Zr+ ions, followed by annealing at 1423 K, was performed to simulate 90Sr to 90Zr decays. At low Zr concentrations, we observe formation of a ZrO-Sr superlattice structure. Ab initio calculations indicate that this atomic configuration is energetically favorable. At higher Zr concentrations, we observe precipitates of ZrO2 with a coherently strained interface, or a monolayer of disordered interfacial structure. Potential candidacy of 90SrTiO3 as a waste form for permanent disposal of 90Sr is discussed.

Jiang, Weilin; Van Ginhoven, Renee M.; Kovarik, Libor; Jaffe, John E.; Arey, Bruce W.

2012-07-13T23:59:59.000Z

110

Crystal structure of Sr-akermanite glassceramics  

Science Journals Connector (OSTI)

A glassceramic of Sr-akermanite (Sr2MgSi2O7, SG: P 4 2 1 m ) was prepared by crystallization of a glass with composition of 2SrOMgO3SiO2. Parameters of the crystal structure were refined by Rietveld method. The analysis of the experimental results showed the following: the unit cell of Sr-akermanite in the glassceramic is larger than in single crystal. The thermal expansion coefficients of Sr-akermanite, calculated from the lattice constants obtained from X-ray diffractograms at high temperatures, were ?a=3.663נ10?6K?1 and ?c=6.666נ10?6K?1. It is suggested that the atomic displacements from the atomic coordination in single crystal depend on the stress developed during the crystallization process and the thermal contraction stress developed during cooling. Both types of stresses are related to the presence of residual glass and should be responsible for the expansion of the crystal lattice.

Yasuo Ochi

2006-01-01T23:59:59.000Z

111

Crystal structure of Sr-akermanite glass-ceramics  

SciTech Connect

A glass-ceramic of Sr-akermanite (Sr{sub 2}MgSi{sub 2}O{sub 7}, SG: P4-bar 2{sub 1}m) was prepared by crystallization of a glass with composition of 2SrO?MgO?3SiO{sub 2}. Parameters of the crystal structure were refined by Rietveld method. The analysis of the experimental results showed the following: the unit cell of Sr-akermanite in the glass-ceramic is larger than in single crystal. The thermal expansion coefficients of Sr-akermanite, calculated from the lattice constants obtained from X-ray diffractograms at high temperatures, were {alpha}{sub a}=3.663x10{sup -6}K{sup -1} and {alpha}{sub c}=6.666x10{sup -6}K{sup -1}. It is suggested that the atomic displacements from the atomic coordination in single crystal depend on the stress developed during the crystallization process and the thermal contraction stress developed during cooling. Both types of stresses are related to the presence of residual glass and should be responsible for the expansion of the crystal lattice.

Ochi, Yasuo [Research and Development Division, Ohara Incorporated Company, Naka 2-22-28, Kunitachi, Tokyo (Japan)]. E-mail: yasuo_ochi@ybb.ne.jp

2006-10-12T23:59:59.000Z

112

Rb-Sr Geochronologic Investigation Of Precambrian Samples From Deep  

Open Energy Info (EERE)

Rb-Sr Geochronologic Investigation Of Precambrian Samples From Deep Rb-Sr Geochronologic Investigation Of Precambrian Samples From Deep Geothermal Drill Holes, Fenton Hill, New Mexico Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Rb-Sr Geochronologic Investigation Of Precambrian Samples From Deep Geothermal Drill Holes, Fenton Hill, New Mexico Details Activities (2) Areas (1) Regions (0) Abstract: Analyses of twenty-six gneissic whole rocks from the depth range 732-2588 m in drill hole GT-2 yield a 1.62 ± 0.04 b.y. isochron age with initial 86Sr/86Sr (Ro) = 0.7067 ± 0.0014; this age is in agreement with radiometric ages reported for rocks elsewhere in north-central New Mexico. A preliminary isochron age of 1.92 ± 0.18 b.y. with Ro = 7014 ± 0.0025 from the nearby drill hole GT-1 is defined by eight samples. Because these

113

Optical and structural stability of blue SrO:Eu{sup 2+} phosphor  

SciTech Connect

Chemical stability of 6-coodinated SrO is a fundamental problem when this is used for various applications. In this study, optical and chemical stabilities of 8-coordinated SrO:Eu{sup 2+} phosphor were investigated. SrO:Eu{sup 2+} phosphor was synthesized from thermal treatment of SrO:Eu powder located on a single crystalline MgO at 1500 C under reduction atmosphere. Obtained 8-coordinated SrO:Eu{sup 2+} phosphor exhibit strong blue luminescence and chemical stability in distilled water for 3 days. Our findings prove that obtained 8-coordinated SrO:Eu{sup 2+} possesses relative optical and chemical stabilities in water. - Graphical abstract: Obtained 8-coordinated SrO:Eu{sup 2+} phosphor exhibit strong blue luminescence in distilled water. Highlights: We investigated optical and chemical stabilities of 8-coordinated SrO:Eu{sup 2+} phosphor in water. Obtained 8-coordinated SrO:Eu{sup 2+} phosphor exhibit strong blue luminescence and chemical stability in distilled water for 3 days. We found that the 8-coodrodinated SrO crystal structure changed to SrCO{sub 3} crystal structure after the 5 days immersion. The obtained SrO:Eu{sup 2+} phosphor possesses high chemical stability under water, compared with commercial (6-coordinated) SrO.

Komatsu, Keiji, E-mail: Keiji_Komatsu@mst.nagaokaut.ac.jp [Department of Material Science and Technology, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188 (Japan); Nakamura, Atsushi [Department of Material Science and Technology, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188 (Japan); Chubu Chelest Co. Ltd., 3-3-3 Hinagahigashi, Yokkaichi, Mie 510-0886 (Japan); Ohshio, Shigeo; Toda, Ikumi; Muramatsu, Hiroyuki; Saitoh, Hidetoshi [Department of Material Science and Technology, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188 (Japan)

2013-08-15T23:59:59.000Z

114

Microsoft Word - OAS-SR-10-04 - WEB VERSION  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

ONLY ONLY OFFICIAL USE ONLY eeOFF Special Inquiry U.S. Department of Energy Office of Inspector General Office of Audit Services Review of Allegations Regarding Hiring and Contracting in the Office of Energy Efficiency and Renewable Energy OAS-SR-10-04 September 2010 Department of Energy Washington, DC 20585 September 22, 2010 MEMORANDUM FOR THE SECRETARY FROM: Gregory H. Friedman Inspector General SUBJECT: INFORMATION: Special Inquiry: "Review of Allegations Regarding Hiring and Contracting in the Office of Energy Efficiency and Renewable Energy" Report Number: OAS-SR-10-04 INTRODUCTION In April 2010, the Office of Inspector General (OIG) began receiving allegations concerning

115

Pick sequencing optimization problem in the rotary rack S/R system  

Science Journals Connector (OSTI)

The problem of pick sequencing in the rotary rack S/R system (PPS-RRS) is ... of minimizing the execution time. The rotary rack S/R system consists of one S/...

Pan Zhang; Lei Jia; Guohui Tian

2004-08-01T23:59:59.000Z

116

Irradiation behavior of SrTiO3 at temperatures close to the critical...  

NLE Websites -- All DOE Office Websites (Extended Search)

for amorphization. Abstract: Damage accumulation on both the Sr and Ti sublattices in strontium titanate (SrTiO3) has been investigated under 1.0 MeV Au+ irradiation at 360 and 400...

117

Structure, magnetic properties and magnetoelastic anisotropy in epitaxial Sr(Ti???Co?)O? films  

E-Print Network (OSTI)

We report the structure, magnetic properties and magnetoelastic anisotropy of epitaxial Sr(Ti???Co?)O? films grown on LaAlO? (001) and SrTiO? (001) substrates by pulsed laser deposition. Room temperature ferromagnetism was ...

Bi, Lei

118

Precise Measurement of Strontium-82 Radioactivity in the Sr-Rb...  

Office of Science (SC) Website

by extracting it from an 82Sr-82Rb generator. Much as a battery is used to store electricity, the radioactive 82Sr with its long 25.35 days half-life serves as an "82Rb...

119

Coccolith Sr/Ca as a new indicator of coccolithophorid calcification and growth rate  

E-Print Network (OSTI)

Coccolith Sr/Ca as a new indicator of coccolithophorid calcification and growth rate Heather M in the eastern equatorial Pacific show variations of $ 15% in Sr/Ca ratios across the equatorial upwelling zone, with Sr/Ca highest at the equator and decreasing off-axis. These variations cannot be due to changes

Schrag, Daniel

120

Structure of transportin SR2, a karyopherin involved in human disease, in complex with Ran  

Science Journals Connector (OSTI)

A 2.9 ? resolution crystal structure of transportin SR2 (TRN-SR2), a -karyopherin involved in the nuclear import of HIV, in complex with the small GTPase Ran was determined. GTP-loaded Ran binds to the N-terminal part of the -helical solenoid-like fold of TRN-SR2.

Tsirkone, V.G.

2014-05-24T23:59:59.000Z

Note: This page contains sample records for the topic "js rogers sr" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Decolorization of methylene blue by Ag/SrSnO3 composites under ultraviolet radiation  

Science Journals Connector (OSTI)

SrSn(OH)6 precursors synthesized by a cyclic microwave radiation (CMR) process were calcined at 900C for 3h to form rodlike SrSnO3. Further, the rod-like SrSnO3 and AgNO3 in ethylene glycol (EG) were ...

Patcharanan Junploy, Titipun Thongtem, Somchai Thongtem, Anukorn Phuruangrat

2014-01-01T23:59:59.000Z

122

Radioactive contamination of SrI2(Eu) crystal scintillator  

E-Print Network (OSTI)

A strontium iodide crystal doped by europium (SrI2(Eu)) was produced by using the Stockbarger growth technique. The crystal was subjected to characterisation that included relative photoelectron output and energy resolution for gamma quanta. The intrinsic radioactivity of SrI2(Eu) crystal scintillator was tested both in scintillation mode and by using ultra-low background HPGe gamma spectrometry deep underground. The response of the SrI2(Eu) detector to alpha particles (alpha/beta ratio and pulse shape) was estimated by analysing the 226Ra trace contamination internal to the crystal. We have found alpha/beta=0.55 and no difference in scintillation decay for alpha particles and gamma quanta. The application of the obtained results in the search for the double electron capture and electron capture with positron emission in 84Sr has been investigated at a level of sensitivity T_1/2 \\sim 10^15-10^16 yr. The results of these studies demonstrate the potentiality of this material for a variety of scintillation appli...

Belli, P; Cerulli, R; Danevich, F A; Galenin, E; Gektin, A; Incicchitti, A; Isaienko, V; Kobychev, V V; Laubenstein, M; Nagorny, S S; Podviyanuk, R B; Tkachenko, S; Tretyak, V I

2011-01-01T23:59:59.000Z

123

Synthesis of BiPbSrCaCuO superconductor  

DOE Patents (OSTI)

A process and a precursor composition for preparing a lead-doped bismuth-strontium-calcium-copper oxide superconductor of the formula Bi.sub.a Pb.sub.b Sr.sub.c Ca.sub.d Cu.sub.e O.sub.f wherein a is from about 1.7 to about 1.9, b is from about 0.3 to about 0.45, c is from about 1.6 to about 2.2, d is from about 1.6 to about 2.2, e is from about 2.97 to about 3.2 and f is 10.+-.z by reacting a mixture of Bi.sub.4 Sr.sub.3 Ca.sub.3 Cu.sub.4 O.sub.16.+-.z, an alkaline earth metal cuprate, e.g., Sr.sub.9 Ca.sub.5 Cu.sub.24 O.sub.41, and an alkaline earth metal plumbate, e.g., Ca.sub.2-x Sr.sub.x PbO.sub.4 wherein x is about 0.5, is disclosed.

Hults, William L. (Los Alamos, NM); Kubat-Martin, Kimberly A. (Espanola, NM); Salazar, Kenneth V. (Espanola, NM); Phillips, David S. (Los Alamos, NM); Peterson, Dean E. (Los Alamos, NM)

1994-01-01T23:59:59.000Z

124

Synthesis of BiPbSrCaCuO superconductor  

DOE Patents (OSTI)

A process and a precursor composition for preparing a lead-doped bismuth-strontium-calcium-copper oxide superconductor of the formula Bi[sub a]Pb[sub b]Sr[sub c]Ca[sub d]Cu[sub e]O[sub f] wherein a is from about 1.7 to about 1.9, b is from about 0.3 to about 0.45, c is from about 1.6 to about 2.2, d is from about 1.6 to about 2.2, e is from about 2.97 to about 3.2 and f is 10[+-]z by reacting a mixture of Bi[sub 4]Sr[sub 3]Ca[sub 3]Cu[sub 4]O[sub 16[+-]z], an alkaline earth metal cuprate, e.g., Sr[sub 9]Ca[sub 5]Cu[sub 24]O[sub 41], and an alkaline earth metal plumbate, e.g., Ca[sub 2[minus]x]Sr[sub x]PbO[sub 4] wherein x is about 0.5, is disclosed.

Hults, W.L.; Kubat-Martin, K.A.; Salazar, K.V.; Phillips, D.S.; Peterson, D.E.

1994-04-05T23:59:59.000Z

125

U. S. Department of Energy Savannah River Operations Office - DOE-SR News  

NLE Websites -- All DOE Office Websites (Extended Search)

Release Archive Release Archive DOE-SR News Release Archive 2012 News Releases Savannah River Site Reaches Significant Milestone with Waste Tank Closure SR-2012-06 Adobe Acrobat PDF DOE to Extend Savannah River Nuclear Solutions Contract at Savannah River Site to September 2016 SR-2012-05 Adobe Acrobat PDF Savannah River Site Federal Employees Volunteer for United Way Campaign SR-2012-04 Adobe Acrobat PDF Installation of Six Large Process Tanks Mark Big Step in Construction of Critical Waste Cleanup Facility at SRS SR-2012-03 Adobe Acrobat PDF Grouting Begins on First SRS Waste Tanks Since 1997 SR-2012-02 Adobe Acrobat PDF SRS Marks Successful Operational Startup of New Biomass Cogeneration Facility SR-2012-01 Adobe Acrobat PDF 2011 News Releases Recovery Act Funds Test Reactor Dome Removal in Historic D&D Project

126

DOE-SR Makes a Difference Through Donation to Educational Center |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

DOE-SR Makes a Difference Through Donation to Educational Center DOE-SR Makes a Difference Through Donation to Educational Center DOE-SR Makes a Difference Through Donation to Educational Center February 24, 2011 - 12:00pm Addthis Media Contact Amy Caver, DOE (803) 952-7697 amy.caver@srs.gov Aiken, SC -- The Department of Energy-Savannah River Operations Office (DOE-SR) is making a real impact to increase learning resources for an educational nonprofit organization through its Computers for Learning (CFL) program. Just recently, DOE-SR donated 20 computer systems to the Darden Enlightenment Center located in Farmville, North Carolina. "We at DOE-SR are extremely pleased to be able to make a positive impact in communities where the needs of at-risk youth or senior citizens is great," said DOE-SR Manager Dave Moody. "The donation of these

127

DOE-SR Makes a Difference Through Donation to Educational Center |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

DOE-SR Makes a Difference Through Donation to Educational Center DOE-SR Makes a Difference Through Donation to Educational Center DOE-SR Makes a Difference Through Donation to Educational Center February 24, 2011 - 12:00pm Addthis Media Contact Amy Caver, DOE (803) 952-7697 amy.caver@srs.gov Aiken, SC -- The Department of Energy-Savannah River Operations Office (DOE-SR) is making a real impact to increase learning resources for an educational nonprofit organization through its Computers for Learning (CFL) program. Just recently, DOE-SR donated 20 computer systems to the Darden Enlightenment Center located in Farmville, North Carolina. "We at DOE-SR are extremely pleased to be able to make a positive impact in communities where the needs of at-risk youth or senior citizens is great," said DOE-SR Manager Dave Moody. "The donation of these

128

Phase transformation of the brownmillerite SrCoO2.5 thin film through alkaline water electrolysis  

Science Journals Connector (OSTI)

A phase transformation from insulating brownmillerite SrCoO2.5 to conducting perovskite SrCoO3 through electrochemical oxidation has been demonstrated for thin films of SrCoOx on a SrTiO3 (001) substrate. The cob...

Octolia Togibasa Tambunan; Min Young Lee

2014-06-01T23:59:59.000Z

129

MHK Projects/SR 01 | Open Energy Information  

Open Energy Info (EERE)

SR 01 SR 01 < MHK Projects Jump to: navigation, search << Return to the MHK database homepage Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":5,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"500px","height":"350px","centre":false,"title":"","label":"","icon":"File:Aquamarine-marker.png","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":45.5519,"lon":-73.5152,"alt":0,"address":"","icon":"http:\/\/prod-http-80-800498448.us-east-1.elb.amazonaws.com\/w\/images\/7\/74\/Aquamarine-marker.png","group":"","inlineLabel":"","visitedicon":""}]}

130

Microsoft Word - 2006FactSR118.doc  

NLE Websites -- All DOE Office Websites (Extended Search)

2-01-SR118 - Degradation of Thermal Barrier Coatings with Syngas Combustion: 2-01-SR118 - Degradation of Thermal Barrier Coatings with Syngas Combustion: Testing by HADES and Characterization by Advanced Electron Microscopy Revision A 1 October 2006 FACT SHEET I. PROJECT PARTICIPANTS University of Central Florida, Orlando, FL Florida Turbines Technologies, Inc., Jupiter, FL II. PROJECT DESCRIPTION A. Objective(s) - To provide performance data and fundamental understanding of degradation for thermal barrier coatings (TBCs) in natural gas (NG) and syngas (SG) combustion environment by * Identify degradation (e.g., hot corrosion) mechanisms (e.g., YSZ destabilization, deposit penetration and reaction, etc.). * Generate critical materials data (e.g., solubility, eutectic compositions and degradation kinetics for realistic NG and SG combustion turbine environment).

131

High-temperature phases of SrRuO3  

Science Journals Connector (OSTI)

The crystal structure of SrRuO3 at high temperatures has been studied using powder neutron diffraction and the Rietveld method. It was determined that from 300 K to approximately 820 K the structure of SrRuO3 is orthorhombic (Pbnm). The material then undergoes a phase transition and becomes tetragonal (I4/mcm) between ?820 and 920 K. The high-temperature (>920 K) structure was found to be the standard cubic perovskite (Pm3m). From the neutron-diffraction data and the space group assignments, the orthorhombic to tetragonal phase transition must be first order, while the transition from the tetragonal to cubic phase is consistent with a second-order phase transition.

Brendan J. Kennedy and Brett A. Hunter

1998-07-01T23:59:59.000Z

132

Impact of Sr segregation on the electronic structure and oxygen reduction activity of SrTi[subscript 1?x]Fe[subscript x]O[subscript 3] surfaces  

E-Print Network (OSTI)

The correlation between the surface chemistry and electronic structure is studied for SrTi[subscript 1?x]Fe[subscript x]O[subscript 3] (STF), as a model perovskite system, to explain the impact of Sr segregation on the ...

Chen, Yan

133

Mechanism for enhanced oxygen reduction kinetics at the (La,Sr)CoO3??/(La,Sr)2CoO4+? hetero-interface  

E-Print Network (OSTI)

The recently reported fast oxygen reduction kinetics at the interface of (La,Sr)CoO3?? (LSC113) and (La,Sr)2CoO4+? (LSC214) phases opened up new questions for the potential role of dissimilar interfaces in advanced cathodes ...

Han, Jeong Woo

134

A Sr-Isotopic Comparison Between Thermal Waters, Rocks, And Hydrothermal  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » A Sr-Isotopic Comparison Between Thermal Waters, Rocks, And Hydrothermal Calcites, Long Valley Caldera, California Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Sr-Isotopic Comparison Between Thermal Waters, Rocks, And Hydrothermal Calcites, Long Valley Caldera, California Details Activities (3) Areas (1) Regions (0) Abstract: The 87Sr/86Sr values of thermal waters and hydrothermal calcites of the Long Valley caldera geothermal system are more radiogenic than those of young intracaldera volcanic rocks. Five thermal waters display 87Sr/86Sr

135

Gruppe Zeit Ort Sprache 1 Montag, 14-16 Uhr SR Westbau UG Deutsch  

E-Print Network (OSTI)

Tabelle1 Seite 1 Gruppe Zeit Ort Sprache 1 Montag, 14-16 Uhr SR Westbau UG Deutsch 2 Montag, 14-16 Uhr SozR GMH Deutsch 3 Seminarraum A im FMF* Englisch 4 Seminarraum C im FMF* Deutsch 5 SR Westbau 2.OG Deutsch 6 Mittwoch, 14-16 Uhr HS I Englisch 7 Mittwoch, 16-18 Uhr SozR GMH Deutsch 8 SR Westbau 2

Timmer, Jens

136

S+R Optimization in Logistics Stochastic and Robust Optimization in Logistics  

E-Print Network (OSTI)

S+R Optimization in Logistics Stochastic and Robust Optimization in Logistics eln irerI 1he upply@isye.gatech.edu 1/ 78 #12;S+R Optimization in Logistics Introductions eout we et qeorgi eh for W yers eserhFisyeFgtehFeduGvlerer 2/ 78 #12;S+R Optimization in Logistics Introductions eout we et qeorgi eh for W yers eserh

Erera, Alan

137

POPDOSE-SR: A Routine Release Atmospheric Population Dose Model Used at SRS  

SciTech Connect

POPDOSE-SR is used to calculate dose to the surrounding Savannah River Site (SRS) population following routine releases of atmospheric radioactivity.

Simpkins, A.A.

2001-04-04T23:59:59.000Z

138

3d X 3d X SrTiO3Ti 2p 3d  

E-Print Network (OSTI)

XX 3d X 3d X X XX X XX SrTiO3Ti 2p 3d SrTiO3Ti 2p 3d 2p 2p SrTiO3 ts) 2p3/2 (t2g) 2p3/2 (e ) 2p1/2 (eg)2p SrTiO3 3d unit (t2g) (eg) (eg)2p1/2 (t2g)3d (Ti Fe Cu) arb. ( 2g) (Ti, Fe, Cu) y(ansitynten 3d In 3d 468464460456 · Photon Energy (e

Katsumoto, Shingo

139

Nanoscale analysis of a SrTiO3/La2/3Sr1/3MnO3 interface  

Science Journals Connector (OSTI)

The aim of the present work is an atomic scale characterization of the SrTiO3/La2/3Sr1/3MnO3 interface involved in Co/SrTiO3/La2/3Sr1/3MnO3 tunnel junctions. Our high-resolution transmission electron microscopy experiments show the quality of the pseudo-morphic growth of La2/3Sr1/3MnO3 (LSMO) and SrTiO3 (STO), but do not allow us to determine the termination of LSMO. On the other hand, we have carried out an energy-loss near-edge structure study of the Mn2p and O1s edges. The main result is that the valence of Mn keeps its intrinsic value of the bulk material till the last MnO2 layers at the interface, which is consistent with the observation of magnetoresistance up to practically the Curie temperature of bulk LSMO in our junctions. These results suggest a La2/3Sr1/3O termination of LSMO.

F. Pailloux, D. Imhoff, T. Sikora, A. Barthlmy, J.-L. Maurice, J.-P. Contour, C. Colliex, and A. Fert

2002-07-08T23:59:59.000Z

140

Degradation Mechanism in La0.8Sr0.2CoO3 [La subscript 0.8 Sr subscript 0.2 CoO subscript 3] as Contact Layer on the Solid Oxide Electrolysis Cell Anode  

E-Print Network (OSTI)

Detailed chemical and structural analyses are presented for the degradation mechanism of La0.8Sr0.2CoO3 [La subscript 0.8 Sr subscript 0.2 CoO subscript 3

Sharma, Vivek Inder

Note: This page contains sample records for the topic "js rogers sr" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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We encourage you to perform a real-time search of NLEBeta
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141

A ~60 Myr periodicity is common to marine-87Sr/86Sr, fossil biodiversity, and large-scale sedimentation: what does the periodicity reflect?  

E-Print Network (OSTI)

We find that the marine 87Sr/86Sr record shows a significant periodicity of 59.3 \\pm 3 Myr. The 87Sr/86Sr record is 171{\\deg} \\pm 12{\\deg}out of phase with a 62 (\\pm 3) Myr periodicity previously reported in the record of marine-animal diversity. These periodicities are close to 58 (\\pm 4) Myr cycles found for the number of gap-bounded sedimentary carbonate packages of North America We propose that these periodicities reflect the operation of a periodic "pulse of the Earth" in large-scale, Earth processes. These may be linked to mantle or plate-tectonic events, possibly uplift, which affects Earth's climate and oceans, and so the geochemistry, sedimentation, and biodiversity of the marine realm. Alternately, they may be linked to oscillation of the solar system normal to the plane of the galaxy.

Melott, Adrian L; Petersen, K D; McArthur, John M

2012-01-01T23:59:59.000Z

142

Ordered vs. disordered perovskites; structural studies of Fe-doped SrIrO{sub 3} and SrRuO{sub 3}  

SciTech Connect

The structures of the two Fe containing perovskites Sr{sub 2}IrFeO{sub 6} and SrRu{sub 0.5}Fe{sub 0.5}O{sub 3} have been established using a combination of synchrotron and neutron diffraction methods. Sr{sub 2}IrFeO{sub 6} and SrRu{sub 0.5}Fe{sub 0.5}O{sub 3} are shown to be monoclinic I2/m and tetragonal I4/mcm respectively The former exhibits a rock-salt like ordering of the Fe and Ir cations and displays a sequence of phase transitions associated with the loss of the octahedral tilts upon heating; 12/m?I4/m?Fm3{sup }m. The Fe and Ru cations are disordered in SrRu{sub 0.5}Fe{sub 0.5}O{sub 3} and this shows a single structural phase transition upon heating due to the loss of the in-phase tilts, viz. I4/mcm?Pm3{sup }m. In both cases XANES measurements show partial oxidation of the Fe{sup 3+} to Fe{sup 4+}. The difference in the structures between the two is remarkable given the similar size of Ir{sup 5+} and Ru{sup 5+}, and this is reflected in their magnetic properties. - Graphical abstract: Sr{sub 2}IrFeO{sub 6} and SrRu{sub 0.5}Fe{sub 0.5}O{sub 3} are shown, using a combination of synchrotron and neutron diffraction, to be monoclinic I2/m with cation ordering and tetragonal I4/mcm with disordered Fe and Ir, respectively. Both undergo phase transitions upon heating due to the loss of the octahedral tilts. Display Omitted - Highlights: Sr{sub 2}IrFeO{sub 6} shown to be monoclinic and shows the transitions upon heating I2/m?I4/m? Fm3{sup }m. SrRu{sub 0.5}Fe{sub 0.5}O{sub 3} is tetragonal and shows a single I4/mcm?Pm3m transition upon heating. The Fe and Ru cations are disordered in SrRu{sub 0.5}Fe{sub 0.5}O{sub 3} but ordered in Sr{sub 2}FeIrO{sub 6}. XANES measurements show partial oxidation of the Fe{sup 3+} to Fe{sup 4+}.

Qasim, Ilyas; Blanchard, Peter E.R.; Liu, Samuel; Tang, Chunguang [School of Chemistry, The University of Sydney, Sydney, NSW 2006 (Australia); Kennedy, Brendan J., E-mail: B.Kennedy@chem.usyd.edu.au [School of Chemistry, The University of Sydney, Sydney, NSW 2006 (Australia); Avdeev, Maxim [Australian Nuclear Science and Technology Organisation, Lucas Heights, NSW 2234 (Australia); Kimpton, Justin A. [Australian Synchrotron, 800 Blackburn Road, Clayton, Victoria 3168 (Australia)

2013-10-15T23:59:59.000Z

143

Oxygen Surface Exchange Kinetics on Sr-Substituted Lanthanum Manganite and Ferrite Thin-Film Microelectrodes  

E-Print Network (OSTI)

The surface oxygen exchange kinetics occurring on dense La0.8Sr0.2MnO3 (65nm thick) and La0.8Sr0.2FeO3 (110nm thick) thin films were investigated by electrochemical impedance spectroscopy (EIS). Rutherford backscattering ...

la O', Gerardo Jose

144

Non-linear Damage Accumulation in Au-irradiated SrTiO3. | EMSL  

NLE Websites -- All DOE Office Websites (Extended Search)

Damage Accumulation in Au-irradiated SrTiO3. Abstract: Ion-induced damage in strontium titanate (SrTiO3) has been investigated using 1.0 MeV Au ions at 150 K and room...

145

Modeling of CSP, KPN and SR systems with systemC  

Science Journals Connector (OSTI)

In this chapter we show the ability to specify with SystemC under the restrictions imposed by several model of computations, namely CSP, KPN and SR. Specifying under these MoCs provides some important properties, specially deterrninism and more protection ... Keywords: CSP, KPN, SR, model of computation, system-level design, systemC

Fernando Herrera; Pablo Snchez; Eugenio Villar

2004-01-01T23:59:59.000Z

146

Mg/Ca and Sr/Ca Paleothermometery from Calcareous Marine Fossils Yair Rosenthal1  

E-Print Network (OSTI)

1 Mg/Ca and Sr/Ca Paleothermometery from Calcareous Marine Fossils Yair Rosenthal1 and Braddock discusses the four important paleotemperature proxies, namely Mg/Ca in planktonic foraminifera and Sr/Ca in corals as recorders of sea surface temperatures and Mg/Ca in benthic foraminifera and ostracodes

Linsley, Braddock K.

147

Time?differential radio?frequency muon spin resonance (TD?RF?SR) technique at a pulsed muon beam  

Science Journals Connector (OSTI)

Longitudinal?field ?SR methods, e.g., radio?frequency ?+...spin resonance (RF?SR), are well suited to investigate dynamic processes that destroy the phase coherence of the muon spin ensemble. Additional informati...

R. Scheuermann; J. Schmidl; A. Seeger; Th. Stammler; D. Herlach

148

Low-temperature Hall effect in substituted Sr2RuO4  

Science Journals Connector (OSTI)

We report the results of a study of the Hall effect and magnetoresistance in single crystals of Sr2RuO4 in which Sr2+ has been substituted by La3+ (Sr2?yLayRuO4) or Ru4+ by Ti4+ (Sr2Ru1?xTixO4). For undoped Sr2RuO4, the purity is so high that the strong-field Hall coefficient can be measured for fields above 4T. The conventional weak-field Hall coefficient as a function of doping shows a sharp jump and sign change at y?0.01 that is unrelated to either a sharp change in Fermi-surface topography or a magnetic instability. The implications of these results are discussed.

Naoki Kikugawa; Andrew Peter Mackenzie; Christoph Bergemann; Yoshiteru Maeno

2004-11-03T23:59:59.000Z

149

Integrated Sr isotope variations and sea-level history of Middle to Upper Cambrian platform carbonates: Implications for the  

E-Print Network (OSTI)

Integrated Sr isotope variations and sea-level history of Middle to Upper Cambrian platform to Upper Cam- brian platform carbonates of the southern Great Basin significantly refines the structure-African orogenesis and attendant enhanced chemical weathering. High-resolution changes in seawa- ter 87 Sr/86 Sr

Banner, Jay L.

150

Newton's gift to Roger Cotes  

Science Journals Connector (OSTI)

...lindahall.org Linda Hall Library of Science, Engineering...collection of the Wellcome Library, and it now seems a...engraving at the Linda Hall Library by John Simon after a...historical scenes on walls and public spaces. His portrait of Newton...

2012-01-01T23:59:59.000Z

151

Roger Tuttle Engineering Public Relations  

E-Print Network (OSTI)

. Vikram D. Kodibagkar Honorable Mention ­ Aniket Wadajkar (Biomedical Engineering) Title: Theranostic

Chiao, Jung-Chih

152

Boson effective charges for light Se, Kr, and Sr isotopes  

Science Journals Connector (OSTI)

A consistent analysis of E2 transition probabilities for nine neutron-deficient even-even Se, Kr, and Sr isotopes has been performed, based on previous parametrizations for these nuclei within the proton-neutron interacting-boson model, from which boson effective charges e? and e? are deduced. Two sets of effective charges are obtained, one set having e??e? for most of the nuclei studied, and the other set having e? substantially larger than e? for most of the nuclei. For both sets, e? tends to decrease with increasing neutron number, while e? is roughly constant. More information on mixed-symmetry states is needed to determine which set is valid.

A. F. Barfield and K. P. Lieb

1990-04-01T23:59:59.000Z

153

Superconductivity in SrNi2P2 single crystals  

SciTech Connect

Heat capacity, magnetic susceptibility, and resistivity of SrNi{sub 2}P{sub 2} single crystals are presented, illustrating the structural transition at 325 K, and bulk superconductivity at 1.4 K. The magnitude of {Tc}, fits to the heat capacity data, the small upper critical field H{sub c2} = 390 Oe, and {kappa} = 2.1 suggests a conventional fully gapped superconductor. With applied pressure we find that superconductivity persists into the so-called 'collapsed tetragonal' phase, although the transition temperature is monotonically suppressed with increasing pressure. This argues that reduced dimensionality can be a mechanism for increasing the transition temperatures of layered NiP, as well as layered FeAs and NiAs, superconductors.

Ronning, Filip [Los Alamos National Laboratory; Bauer, Eric D [Los Alamos National Laboratory; Park, Tuscon [Los Alamos National Laboratory; Thompson, Joe D [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

154

Estimation of trap levels in SrTiO{sub 3} epitaxial films from measurement of (LaSr)MnO{sub 3}/SrTiO{sub 3}/(LaSr)TiO{sub 3} p-i-n diode characteristics  

SciTech Connect

We have explored electrical trap levels inside SrTiO{sub 3} epitaxial films grown by the pulsed laser deposition method from electrical measurements of semiconducting oxide p-i-n diodes consisting of La{sub 0.85}Sr{sub 0.15}MnO{sub 3}/SrTiO{sub 3}/La{sub 0.05}Sr{sub 0.95}TiO{sub 3} trilayers. The prepared p-i-n diodes exhibited a marked temperature dependence in their current{endash}voltage (I{endash}V) characteristics. By attributing the temperature dependence of I{endash}V curves to the space-charge limitation due to the trapped charges inside the i-SrTiO{sub 3} layer, we estimated crudely the level of the dominant trap in the SrTiO{sub 3} layer as {similar_to}0.09 eV. The trap density was also estimated from the curve-fitting technique. At this moment, the trap densities were 10{sup 16} and 10{sup 18}/cm{sup 3} when SrTiO{sub 3} layers were grown at 650 and 630{degree}C, respectively. {copyright} 2001 American Institute of Physics.

Sugiura, Masanori; Uragou, Kazuyuki; Tachiki, Minoru; Kobayashi, Takeshi

2001-07-01T23:59:59.000Z

155

Electron momentum density, band structure, and structural properties of SrS  

SciTech Connect

The electron momentum density, the electronic band structure, and the structural properties of SrS are presented in this paper. The isotropic Compton profile, anisotropies in the directional Compton profiles, the electronic band structure and density of states are calculated using the ab initio periodic linear combination of atomic orbitals method with the CRYSTAL06 code. Structural parameters of SrS-lattice constants and bulk moduli in the B1 and B2 phases-are computed together with the transition pressure. The computed parameters are well in agreement with earlier investigations. To compare the calculated isotropic Compton profile, measurement on polycrystalline SrS is performed using 5Ci-{sup 241}Am Compton spectrometer. Additionally, charge transfer is studied by means of the Compton profiles computed from the ionic model. The nature of bonding in the isovalent SrS and SrO compounds is compared on the basis of equal-valenceelectron-density profiles and the bonding in SrS is found to be more covalent than in SrO.

Sharma, G., E-mail: gsphysics@gmail.com [University of Kota, Department of Pure and Applied Physics (India); Munjal, N.; Vyas, V. [Banasthali University, Department of Physics (India)] [Banasthali University, Department of Physics (India); Kumar, R.; Sharma, B. K. [University of Rajasthan, Department of Physics (India)] [University of Rajasthan, Department of Physics (India); Joshi, K. B. [MLS University, Department of Physics (India)] [MLS University, Department of Physics (India)

2013-10-15T23:59:59.000Z

156

Levels of Rb93, Sr93, and Y93 fed in the decays of Kr93, Rb93, and Sr93  

Science Journals Connector (OSTI)

The ? rays and conversion electrons following the ?- decay of Kr93, Rb93, and Sr93 have been measured by applying on-line mass-separation techniques to U235 fission products. Level schemes for the three daughter nuclei are proposed based on the study of ?-singles, ??-coincidence, and internal-conversion electron spectra. Internal-conversion coefficients were determined for 10 transitions and the deduced multipolarities as well as logft values were combined with known reaction results to assign spins and parities. The half-life for the 758.63-KeV isomeric level in Y93 was measured to be 85 15 msec.RADIOACTIVITY Kr93, Rb93, Sr93; measured E?, I?, ?? coin, ICC; deduced logft, ?. Ym93; measured T12. Rb93, Sr93, Y93; deduced levels, J, ?. On-line measurement, mass-separated U235 fission products.

E. Achterberg; F. C. Iglesias; A. E. Jech; J. A. Moragues; D. Otero; M. L. Prez; A. N. Proto; J. J. Rossi; W. Scheuer

1974-12-01T23:59:59.000Z

157

Precise Measurement of Strontium-82 Radioactivity in the Sr-Rb PET  

Office of Science (SC) Website

Precise Measurement of Strontium-82 Precise Measurement of Strontium-82 Radioactivity in the Sr-Rb PET Generator Nuclear Physics (NP) NP Home About Research Facilities Science Highlights Benefits of NP Spinoff Applications Spinoff Archives SBIR/STTR Applications of Nuclear Science and Technology Funding Opportunities Nuclear Science Advisory Committee (NSAC) News & Resources Contact Information Nuclear Physics U.S. Department of Energy SC-26/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-3613 F: (301) 903-3833 E: sc.np@science.doe.gov More Information » Spinoff Archives Precise Measurement of Strontium-82 Radioactivity in the Sr-Rb PET Generator Print Text Size: A A A RSS Feeds FeedbackShare Page Application/instrumentation: Precise measurement of 82Sr radioactivity in the Sr-Rb PET generatorm

158

VWA-0024 - In the Matter of Russell P. Marler, Sr. | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

VWA-0024 - In the Matter of Russell P. Marler, Sr. VWA-0024 - In the Matter of Russell P. Marler, Sr. VWA-0024 - In the Matter of Russell P. Marler, Sr. This Decision involves a complaint filed by Russell P. Marler, Sr. (Marler or "the complainant") under the Department of Energy (DOE) Contractor Employee Protection Program, codified at 10 C.F.R. Part 708. Marler is a former employee of a DOE contractor, DynMcDermott Petroleum Operations Company (DM), and alleges in his complaint that certain reprisals were taken against him by DM, including a poor performance evaluation and selection for termination under a Reduction-in-Force (RIF), as a result of his participating in an act protected under Part 708. More specifically, Marler alleges that these adverse personnel actions were improperly taken

159

A 674 nm external cavity diode laser for a ??Sr? ion trap  

E-Print Network (OSTI)

Atomic ion traps are a promising candidate for scalable quantum information processing. In this thesis, a 674 nm extended cavity diode laser is built to address an optical quantum bit in ??Sr? with the goal of testing such ...

Thon, Susanna M. (Susanna Mitrani)

2005-01-01T23:59:59.000Z

160

Generation and distortion of Rb/Sr whole-rock isochrons; effects of metamorphism and alteration  

Science Journals Connector (OSTI)

...alteration hydrothen. alteration hydrotheoi. alteration low teiper. alteration low temper, alteration low temper, alteration low teiper. alteration low temper, alteration low teiper. alteration unrealistic low Sr-ini. alteration DELHAL...

Helmuth Hradetzky; Hans J. Lippolt

Note: This page contains sample records for the topic "js rogers sr" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

The neutron binding energy in the neutron-rich nucleus93Sr  

Science Journals Connector (OSTI)

The neutron binding energy in93Sr has been determined to (52306) keV from energy correspondences between levels defined by ?-ray transitions and ?-delayed neutron emission.

K. -L. Kratz; H. Ohm

1980-01-01T23:59:59.000Z

162

A Sr-Isotopic Comparison Between Thermal Waters, Rocks, And Hydrotherm...  

Open Energy Info (EERE)

pre-intrusive metavolcanic and metasedimentary rocks can have considerably higher Sr-isotope ratios (0.7061-0.7246 and 0.7090-0.7250, respectively). Hydrothermally altered...

163

Sr isotope chemostratigraphy of Upper Jurassic carbonate rocks in the Demerdzhi Plateau (Crimean Mountains)  

Science Journals Connector (OSTI)

The first Sr chemostratigraphic data are obtained for the Upper Jurassic carbonate sections in the Demerdzhi Plateau of the Crimean Mountains. The oncoid, microbial, and organogenic-detrital limestone varietie...

S. V. Rudko; A. B. Kuznetsov; V. K. Piskunov

2014-09-01T23:59:59.000Z

164

Three-Dimensional Imaging of Individual Dopant Atoms inSrTiO3  

E-Print Network (OSTI)

for a specific 3D dopant atom configuration. The methodto have more than 2 Gd atoms in a column is still less thanImaging of Individual Dopant Atoms in SrTiO 3 Jinwoo Hwang,

Hwang, Jinwoo; Zhang, Jack Y; DAlfonso, Adrian J; Allen, Leslie J; Stemmer, Susanne

2013-01-01T23:59:59.000Z

165

Special Inquiry: OAS-SR-10-04 | Department of Energy  

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

Inquiry: OAS-SR-10-04 September 22, 2010 Review of Allegations Regarding Hiring and Contracting in the Office of Energy Efficiency and Renewable Energy Not Available for Viewing...

166

Enhanced Magnetism in Epitaxial SrRuO3 Thin Films  

E-Print Network (OSTI)

Enhanced Magnetism in Epitaxial SrRuO 3 A. J. Grutter, 1, 2and their e?ects on magnetism. In this paper we demonstrateXMCD con?rmed that the magnetism originates from the Ru 4+

Grutter, A.J.

2010-01-01T23:59:59.000Z

167

Single Source Electron Beam Evaporation of Bi-Sr-Ca-Cu-O Thin Films  

Science Journals Connector (OSTI)

A modified electron beam evaporation technique for the deposition of BiSrCaCuO thin films has been developed. In contrast to the conventional hearthed electron beam crucible the design in the present study use...

M. Ghanashyam Krishna; G. K. Muralidhar

1990-01-01T23:59:59.000Z

168

Role of polaron hopping in leakage current behavior of a SrTiO3 ...  

E-Print Network (OSTI)

Dec 10, 2013 ... zirconate titanite (PZT), strontium titanite (SrTiO3), and bar- ium titanite (BaTiO3), have been widely utilized in various electronic devices such...

2014-03-14T23:59:59.000Z

169

South America Latitude Tilted SR Solar Model from INPE and LABSOLAR |  

Open Energy Info (EERE)

Latitude Tilted SR Solar Model from INPE and LABSOLAR Latitude Tilted SR Solar Model from INPE and LABSOLAR Dataset Summary Description (Abstract): Mean values of Latitude Tilted Solar Radiation in kWh/m2/day for 40km cells for 1 year (month, season, year) based on data from 1995 to 2005 (Purpose): To provide a set of consistent, reliable, verifiable, and accessible global data sets for international and in-country investors and other stakeholders (Supplemental Information): The BRASIL-SR model (developed by INPE - National Institute for Space Research) and the ARCVIEW software were used to produce the dataset and SHAPE files.The assessment of reliability levels of the BRASIL-SR model were performed through the evaluation of the deviations shown by the estimated values for solar radiation flux vis-à-vis the values measured at the surface (ground truth). This evaluation was done in two phases. The first phase consisted in an inter-comparison between the core radiation transfer models adopted by the SWERA Project to map the solar energy in the various countries participating in the project. The HELIOSAT model took part in this phase like benchmark due to its employment to map solar energy resources in countries from European Union. In the second phase, the solar flux estimates provided by the BRASIL-SR model were compared with measured values acquired at several solarimetric stations spread along the Brazilian territory. The BRASIL-SR model is not validated for areas covered by snow.

170

South America PAR SR Solar Model from INPE and LABSOLAR | OpenEI  

Open Energy Info (EERE)

PAR SR Solar Model from INPE and LABSOLAR PAR SR Solar Model from INPE and LABSOLAR Dataset Summary Description (Abstract): Mean values of PAR Solar Radiation in kWh/m2/day for 40km cells for 1 year (month, season, year) based on data from 1995 to 2005 (Purpose): To provide a set of consistent, reliable, verifiable, and accessible global data sets for international and in-country investors and other stakeholders (Supplemental Information): The BRASIL-SR model (developed by INPE - National Institute for Space Research) and the ARCVIEW software were used to produce the dataset and SHAPE files. The assessment of reliability levels of the BRASIL-SR model were performed through the evaluation of the deviations shown by the estimated values for solar radiation flux vis-à-vis the values measured at the surface (ground truth). This evaluation was done in two phases. The first phase consisted in an inter-comparison between the core radiation transfer models adopted by the SWERA Project to map the solar energy n the various countries participating in the project. The HELIOSAT model took part in this phase like benchmark due to its employment to apply solar energy resources in countries from European Union. In the second phase, the solar flux estimates provided by the BRASIL-SR model were compared with measured values acquired at several solarimetric stations spread along the Brazilian territory. The BRASIL-SR model is not validated for areas covered by snow.

171

Evaluation of Adsorption Properties for Cs and Sr Selective Adsorbents-13171  

SciTech Connect

The development of effective treatment and disposal methods is very urgent and important subject. Tohoku University and UNION SHOWA have developed various selective adsorbents (zeolites, zeolite sheets and composites loaded with insoluble ferrocyanides) for the effective decontamination of radioactive Cs{sup +} and Sr{sup 2+} As for Cs{sup +} adsorption, CST, chabazite and insoluble ferrocyanides composites had relatively large distribution coefficients (K{sub d}) above 10{sup 3} cm{sup 3}/g and excellent adsorption kinetics in seawater. Even after high temperature calcination at 1,100 deg. C, cesium was still immobilized in the calcined products of Cs{sup +}-zeolites, suggesting high immobilization ability of zeolites for Cs{sup +}. As for Sr{sup 2+} adsorption, A and X zeolites had relatively large K{sub d} values around 10{sup 2} cm{sup 3}/g, and zeolite sheet (A zeolite) exhibited excellent adsorption kinetics in seawater. Considering the decontamination of radioactive Sr{sup 2+} in groundwater, the effects of Ca{sup 2+} and Mg{sup 2+} ions on the K{sub d} value of Sr{sup 2+} were further examined by batch method. The K{sub d} value of Sr{sup 2+} was almost independent of Mg{sup 2+} concentration up to 2,500 ppm, while gradually lowered in the presence of Ca{sup 2+} above 200 ppm, due to the differences in the ionic radius of hydrated ion. The Cs{sup +} and Sr{sup 2+} adsorption ability for KNiFC-A (composite of A zeolite loaded with insoluble ferrocyanides) was examined by batch method. Here the matrix of composite (A zeolite) and loaded ferrocyanides (KNiFC) have high selectivity towards Sr{sup 2+} and Cs{sup +}, respectively. The K{sub d} values of Sr{sup 2+} and Cs{sup +} in seawater were estimated to be above 10{sup 2} and 10{sup 3} cm{sup 3}/g, respectively, indicating the effectiveness for the decontamination of both Sr{sup 2+} and Cs{sup +}. The basic data on the Cs{sup +} and Sr{sup 2+} adsorption properties for selective adsorbents are effective for the practical decontamination processes of these metal ions in seawater and groundwater. (authors)

Nakai, Tomonori; Wakabayashi, Syunya; Mimura, Hitoshi; Niibori, Yuichi; Kurosaki, Fumio; Matsukura, Minoru [Dept. of Quantum Science and Energy Engineering, Graduate School of Engineering, Tohoku University,Aramaki-Aza-Aoba 6-6-01-2,Sendai, 980-8579 (Japan)] [Dept. of Quantum Science and Energy Engineering, Graduate School of Engineering, Tohoku University,Aramaki-Aza-Aoba 6-6-01-2,Sendai, 980-8579 (Japan); Tanigawa, Hiroshi; Ishizaki, Eiji [UNION SHOWA K.K., 17-20, Mita 2-chome, Minato-ku, Tokyo 108-0073 (Japan)] [UNION SHOWA K.K., 17-20, Mita 2-chome, Minato-ku, Tokyo 108-0073 (Japan)

2013-07-01T23:59:59.000Z

172

Impact of Sr segregation on the electronic structure and oxygen reduction activity of SrTi1xFexO3 surfaces  

E-Print Network (OSTI)

active cathode materials, a deeper under- standing of the correlation between the cathode surface, to explain the impact of Sr segregation on the oxygen reduction activity of cathodes in solid oxide fuel to decrease the SOFC working temperature to an intermediate range ($500 to 700 C), new cathode materials

Yildiz, Bilge

173

Evolution of the geothermal fluids at Los Azufres, Mexico, as traced by noble gas isotopes, ?18O, ?D, ?13C and 87Sr/86Sr  

Science Journals Connector (OSTI)

Isotopes of noble gases, CO2, H2O and Sr were measured in 10 geothermal wells and 8 hot springs, fumaroles and mud volcanoes at Los Azufres, the second most important geothermal field in Mexico. The aim of this study is to provide additional information on fluid circulation in the field and surrounding areas (Arar hot springs), as well as on physical processes such as boiling, steam separation and invasion of re-injected brines following over 25years of geothermal fluid exploitation. Mantle helium dominates in fluids from the northern production zone of Martaro, with measured 3He/4He ratios up to 7 Ra (where Ra is the atmospheric ratio of 1.386נ10?6). 3He/4He ratios are positively correlated with 87Sr/86Sr ratios and with ?D and ?18O. These relationships suggest that Los Azufres fluids represent a mixing between primary magmatic 3He-rich fluids and groundwater currently discharging at Arar hot springs and enriched in radiogenic 4He acquired from Miocene andesites. Unusually high He ratios together with radiogenic Sr isotopic ratios suggest that thermal waters acquired mantle He from deep-seated parent magmas and radiogenic Sr possibly during their uprising through the metamorphic basement. 40Ar/36Ar ratios of 366 to 429 measured in two wells indicate either mantle-derived argon or a radiogenic 40Ar in situ component, suggesting the local presence of an older crustal fluid component in the northern part of the field. Ne, Kr and Xe are entirely of atmospheric origin, but processes of boiling, steam separation and re-injection of used brines have led to fractionation of their elemental abundances. Comparison with previous studies suggests that the boiling zone in the northern production zone is currently extending further north (Martaro hot springs). In the southwestern productive zone, re-injected brines might account for more than 90% of the exploited fluids.

D.L. Pinti; M.C. Castro; O. Shouakar-Stash; A. Tremblay; V.H. Garduo; C.M. Hall; J.-F. Hlie; B. Ghaleb

2013-01-01T23:59:59.000Z

174

X-ray nano-diffraction study of Sr intermetallic phase during solidification of Al-Si hypoeutectic alloy  

SciTech Connect

The evolution of strontium (Sr) containing intermetallic phase in the eutectic reaction of Sr-modified Al-Si hypoeutectic alloy was studied with high energy synchrotron beam source for nano-diffraction experiments and x-ray fluorescence elemental mapping. Contrary to popular belief, Sr does not seem to interfere with the Twin Plane Re-entrant Edge (TPRE) growth mechanism of eutectic Si, but evolves as the Al{sub 2}Si{sub 2}Sr phase during the eutectic reaction at the boundary between the eutectic Si and Al grains.

Manickaraj, Jeyakumar; Gorny, Anton; Shankar, Sumanth, E-mail: shankar@mcmaster.ca [Light Metal Casting Research Centre (LMCRC), Department of Mechanical Engineering, McMaster University, 1280 Main Street W, Hamilton, Ontario L8S 4L7 (Canada); Cai, Zhonghou [Advanced Photon Source, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439 (United States)

2014-02-17T23:59:59.000Z

175

The low Sr/Ba ratio on some extremely metal-poor stars  

E-Print Network (OSTI)

It has been noted that, in classical extremely metal-poor (EMP) stars, the abundance ratio of Sr and Ba, is always higher than [Sr/Ba] = -0.5, the value of the solar r-only process; however, a handful of EMP stars have recently been found with a very low Sr/Ba ratio. We try to understand the origin of this anomaly by comparing the abundance pattern of the elements in these stars and in the classical EMP stars. Four stars with very low Sr/Ba ratios were observed and analyzed within LTE approximation through 1D (hydrostatic) model atmosphere, providing homogeneous abundances of nine neutron-capture elements. In CS 22950-173, the only turnoff star of the sample, the Sr/Ba ratio is, in fact, found to be higher than the r-only solar ratio, so the star is discarded. The remaining stars (CS 29493-090, CS 30322-023, HE 305-4520) are cool evolved giants. They do not present a clear carbon enrichment. The abundance patterns of the neutron-capture elements in the three stars are strikingly similar to a theoretical s-pro...

Spite, M; Bonifacio, P; Caffau, E; Franois, P; Sbordone, L

2014-01-01T23:59:59.000Z

176

Electric dipole and quadrupole properties of In$^{+}$ and Sr using finite field calculation  

E-Print Network (OSTI)

The electric dipole and quadrupole properties of two frequency-standard candidates In$^{+}$ and Sr are calculated by using the finite-field approach. We reproduce the dipole polarizability of the 5s$^2$ $^1S^e_0$ and 5s5p $^3P^o_0$ of In$^+$ and Sr with an excellent agreement with the previously recommended data. Besides, the scalar and tensor dipole polarizabilities for $5s5p$ $^3P^o_{1,2}$ of In$^+$ and Sr and the second dipole hyperpolarizability for In$^+$ 5s$^2$ $^1S^e_0$ and 5s5p $^3P^o_{0,1,2}$ are given. The uncertainty is controlled down to around 1-4\\% for In$^+$ and 2-6\\% for Sr by increasing the basis-set and electronic-correlation levels hierarchically. The importance of the spin-orbit coupling effect is analyzed by comparing the spin-dependent and spin-free results. The dipole polarizability of In$^{+}$ demonstrates stronger dependency on the spin-orbit coupling effect than Sr. The quadrupole moment and quadrupole polarizabilities of 5s$^2$ $^1S^e_0$ and 5s5p $^3P^o_{0,1,2}$ are also given. Fina...

Yu, Yan-mei; Feng, Hui-hui; Fan, Heng; Liu, Wu-Ming

2015-01-01T23:59:59.000Z

177

Clarification by TEM and SIMS of abnormal Ti depth distribution in chemical solution-deposited SrTiO3/La0.5Sr0.5CoO3  

Science Journals Connector (OSTI)

A chemical solution-deposited multilayer system of SrTiO3 ("STO")/La0.5Sr0.5CoO3 ("LSCO") on a platinized wafer with a layer sequence Pt/TiO2/SiO2.../Si(bulk) has been investigated by dynamic SIMS (secondary ion...

C. Pollak; H. Hutter; P. Warbichler

2001-09-01T23:59:59.000Z

178

CHEMICAL AND BIOLOGICAL ENGINEERING CURRICULUM -BS CHE DEGREE PRE-MED SUGGESTED FLOWCHART Revised 2-21-12 CSB Fall -FRESH Spring -FRESH Fall -SOPH Spring -SOPH Fall -JR Spring -JR Fall -SR Spring -SR  

E-Print Network (OSTI)

CHEMICAL AND BIOLOGICAL ENGINEERING CURRICULUM - BS CHE DEGREE PRE-MED SUGGESTED FLOWCHART Revised 2-21-12 CSB Fall - FRESH Spring - FRESH Fall - SOPH Spring - SOPH Fall - JR Spring - JR Fall - SR Spring - SR (CH 117) (CH 118) CH 101 (4) CH 102 (4) CH 231 (3) CH 232 (3) *Career El (1) *CHE EL (3) (BSC

Carver, Jeffrey C.

179

CHEMICAL AND BIOLOGICAL ENGINEERING CURRICULUM DUAL BS CHE/CH DEGREE Revised 2-21-12 CSB CH 101 (4) Spring -FRESH Fall -SOPH Spring -SOPH Fall -JR Spring -JR Fall -SR Spring -SR  

E-Print Network (OSTI)

CHEMICAL AND BIOLOGICAL ENGINEERING CURRICULUM DUAL BS CHE/CH DEGREE Revised 2-21-12 CSB CH 101 (4) Spring - FRESH Fall - SOPH Spring - SOPH Fall - JR Spring - JR Fall - SR Spring - SR (CH 117) (CH 118) CH 16 15 COURSE OFFERING Summer Only Fall Only Spring Only OPTIONAL COURSES GES 100 (1) MA 112 (3) MA

Carver, Jeffrey C.

180

2013 CHEMICAL AND BIOLOGICAL ENGINEERING CURRICULUM -BS CHE DEGREE Revised 6-25-13 CSB Fall -FRESH Spring -FRESH Fall -SOPH Spring -SOPH Fall -JR Spring -JR Fall -SR Spring -SR  

E-Print Network (OSTI)

2013 CHEMICAL AND BIOLOGICAL ENGINEERING CURRICULUM - BS CHE DEGREE Revised 6-25-13 CSB Fall - FRESH Spring - FRESH Fall - SOPH Spring - SOPH Fall - JR Spring - JR Fall - SR Spring - SR (CH 117) (CH 16 15 15/17 4/0 15/17 15 COURSE OFFERING Summer Only Fall Only Spring Only Total Hours 127 OPTIONAL

Carver, Jeffrey C.

Note: This page contains sample records for the topic "js rogers sr" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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181

2013 CHEMICAL AND BIOLOGICAL ENGINEERING CURRICULUM -BS CHE DEGREE PRE-MED SUGGESTED FLOWCHART Revised 6-25-13 CSB Fall -FRESH Spring -FRESH Fall -SOPH Spring -SOPH Fall -JR Spring -JR Fall -SR Spring -SR  

E-Print Network (OSTI)

2013 CHEMICAL AND BIOLOGICAL ENGINEERING CURRICULUM - BS CHE DEGREE PRE-MED SUGGESTED FLOWCHART Revised 6-25-13 CSB Fall - FRESH Spring - FRESH Fall - SOPH Spring - SOPH Fall - JR Spring - JR Fall - SR Spring - SR (CH 117) (CH 118) CH 101 (4) CH 102 (4) CH 231 (3) CH 232 (3) a,i Career EL (4) a,i Career EL

Carver, Jeffrey C.

182

2013 CHEMICAL AND BIOLOGICAL ENGINEERING CURRICULUM -BS CHE DEGREE Revised 6-25-13 CSB Fall -FRESH Spring -FRESH Fall -SOPH Spring -SOPH Fall -JR Spring -JR Fall -SR Spring -SR  

E-Print Network (OSTI)

2013 CHEMICAL AND BIOLOGICAL ENGINEERING CURRICULUM - BS CHE DEGREE Revised 6-25-13 CSB Fall - FRESH Spring - FRESH Fall - SOPH Spring - SOPH Fall - JR Spring - JR Fall - SR Spring - SR (CH 117) (CH/0 12/14 15 COURSE OFFERING Summer Only Fall Only Spring Only Total Hours 127 OPTIONAL COURSES MA 112 (3

Carver, Jeffrey C.

183

Audit Special Inquiry: OAS-SR-10-04 | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Inquiry: OAS-SR-10-04 Inquiry: OAS-SR-10-04 Audit Special Inquiry: OAS-SR-10-04 September 22, 2010 Special Inquiry: Review of Allegations Regarding Hiring and Contracting in the Office of Energy Efficiency and Renewable Energy In April 2010, the Office of Inspector General (OIG) began receiving allegations concerning hiring and contracting practices within the Office of Energy Efficiency and Renewable Energy (EERE). These allegations included: 1. Improprieties in the hiring of a contract employee to a senior Federal career position, including concerns that the contract employee was pre-selected or otherwise had an unfair advantage; 2. Performance of inherently governmental duties, including the supervision of Federal employees, by the same contract employee; and, 3. Award of work to a

184

Special Inquiry: INS-SR-13-02 | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

INS-SR-13-02 INS-SR-13-02 Special Inquiry: INS-SR-13-02 April 15, 2013 Alleged Mismanagement of the Department of Energy's Executive Protection Operations The Office of Special Operations (Special Operations) has primary responsibility for the protection and evacuation of the Secretary of Energy and other executive personnel as designated by the Secretary. Special Operations, a part of the Office of Health, Safety and Security (HSS), employs special agents charged with managing executive protection operations. These special agents apply tactics, techniques and procedures designed to protect an individual from physical assault or harm. Special Operations agents are augmented by Office of Secure Transportation (OST) agents while the Secretary is on travel status, and in coordination with

185

Special Report: OAS-SR-10-03 | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Special Report: OAS-SR-10-03 Special Report: OAS-SR-10-03 Special Report: OAS-SR-10-03 September 14, 2010 Department's Freedom of Information Act Request Process The Freedom of Information Act (FOIA or the Act) (5 U.S.C. 552) specifies the information that all Federal Agencies are required to make available to the public. The Act, as it is applicable to the Department of Energy (Department), is presented in 10 CFR 1004. According to the Department's most recent Annual FOIA Report, in Fiscal Year (FY) 2009, 1,809 FOIA requests were received. Of these, 702 remained at Department Headquarters for processing, with the remainder being processed by various field organizations. In most circumstances, the Act requires that responses be provided within a maximum of 20 days. The Department has established a FOIA

186

Special Report: OAS-SR-10-01 | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

1 1 Special Report: OAS-SR-10-01 July 21, 2010 Need for Enhanced Surveillance During the Yucca Mountain Project Shut Down The Nuclear Waste Policy Act Amendments of 1987 (Act) designated Yucca Mountain in Southwestern Nevada as the site for a national geologic repository for high-level nuclear waste, primarily the waste generated by U.S. commercial nuclear plants. The Department of Energy (Department) assigned management of the program to the Office of Civilian Nuclear Waste Management (OCRWM) and formally designated the project as the Yucca Mountain Project (Project). Topic: Management & Administration Special Report: OAS-SR-10-01 More Documents & Publications Special Report: OAS-SR-10-02 Gregory H. Friedman: Before the Subcommittee on Environment and the

187

Special Inquiry: INS-SR-13-01 | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Special Inquiry: INS-SR-13-01 Special Inquiry: INS-SR-13-01 Special Inquiry: INS-SR-13-01 January 31, 2013 Alleged Wasteful Spending Regarding International Travel for the Department of Energy's Deputy Secretary The Department of Energy's Deputy Secretary represents the U.S. Government, the Department and the Secretary in many high-level international and ministerial meetings. In this role, the Deputy Secretary is authorized executive protection while on international travel for security purposes, to reduce the risk of harm and aid mission accomplishment. During such travel, the Deputy Secretary is authorized premium class (first or business class) accommodations, and is usually accompanied by a special agent with law enforcement authority from the Department's Office of Special Operations (OSO), a component of the Office of Health Safety and

188

FIA-13-0051 - In the Matter of DeShonne E. Massey Sr. | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

1 - In the Matter of DeShonne E. Massey Sr. 1 - In the Matter of DeShonne E. Massey Sr. FIA-13-0051 - In the Matter of DeShonne E. Massey Sr. On August 14, 2013, the Office of Hearings and Appeals (OHA) issued a decision granting, in part, an appeal (Appeal) from a Freedom of Information Act (FOIA) determination issued by the Office of Information Resources (OIR). The Appellant filed a FOIA request seeking copies of any and all records related to a named OHA employee's use of flexiplace or telecommuting during her entire tenure at DOE. In its response, OIR stated that after OHA and the Office of the Chief Financial Officer (CFO) conducted searches of their respective files, only one responsive document was identified. OIR released this document to Appellant but withheld certain information that was deemed exempt from the FOIA under Exemption

189

FIA-13-0040 - In the Matter of DeShonne E. Massey Sr. | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

0 - In the Matter of DeShonne E. Massey Sr. 0 - In the Matter of DeShonne E. Massey Sr. FIA-13-0040 - In the Matter of DeShonne E. Massey Sr. On July 17, 2013, OHA issued a decision denying an appeal (Appeal) from a FOIA determination issued by the Office of Information Resources (OIR). The Appellant filed a two-part request under the Freedom of Information Act (FOIA). The request sought 1) copies of time and attendance records for OHA employees, and 2) copies of counseling memoranda or disciplinary actions involving time and attendance for OHA employees, including, but not limited to, Avery R. Webster and XXXXX. In response to the first part of the request, the OIR released one document in part, withholding portions pursuant to Exemption 6 of the FOIA. In response to the second part of the request, the OIR informed the Appellant that it neither confirmed nor

190

FIA-13-0041 - In the Matter of DeShonne E. Massey, Sr. | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

1 - In the Matter of DeShonne E. Massey, Sr. 1 - In the Matter of DeShonne E. Massey, Sr. FIA-13-0041 - In the Matter of DeShonne E. Massey, Sr. On July17, 2013, OHA issued a decision granting, in part, an appeal (Appeal) from a FOIA determination issued by the Office of Health, Safety and Security (HSS). The Appellant had filed a FOIA request seeking copies of any and all records that contain the time of arrival and/or departure of a named OHA employee at the FOHO gym located in the DOE Forrestal Building, from August 2007 to the present. In its response, HSS stated that after conducting a search of its files, HSS did not locate any responsive documents. The Appellant contested the adequacy of the search conducted in response to Appellant's request. Upon review of a description of the search conducted by HSS, OHA determined that HSS conducted a search

191

EXPLAINING THE Sr AND Ba SCATTER IN EXTREMELY METAL-POOR STARS  

SciTech Connect

Compilations of abundances of strontium and barium in extremely metal-poor stars show that an apparent cutoff is observed for [Sr/Ba] at [Fe/H] < -3.6 and large fluctuations for [Fe/H] > -3.6 with a clear upper bound depending on metallicity. We study the factors that place upper limits on the logarithmic ratio [Sr/Ba]. A model is developed in which the collapses of type II supernovae are found to reproduce many of the features seen in the data. This model is consistent with galactic chemical evolution constraints of light-element enrichment in metal-poor stars. Effects of turbulence in an explosive site have also been simulated, and are found to be important in explaining the large scatter observed in the [Sr/Ba] data.

Aoki, W.; Suda, T.; Boyd, R. N.; Kajino, T.; Famiano, M. A., E-mail: aoki.wako@nao.ac.jp, E-mail: takuma.suda@nao.ac.jp, E-mail: richard11boyde@comcast.net, E-mail: kajino@nao.ac.jp, E-mail: michael.famiano@wmich.edu [National Astronomical Observatory of Japan, 2-21-1 Mitaka, Tokyo 181-8588 (Japan)

2013-03-20T23:59:59.000Z

192

Evolution of Magnetic Oxygen States in Sr-Doped LaCoO3  

SciTech Connect

Magnetism in La1-xSrxCoO3 as a function of doping is investigated with x-ray absorption spectroscopy and x-ray magnetic circular dicrhoism at the O K edge, and corresponding first principles electronic structure calculations. For small x, the spectra are consistent with the formation of ferromagnetic clusters occurring within a nonmagnetic insulating matrix. Sr-induced, magnetic O-hole states form just above EF and grow with increasing Sr doping. Density functional calculations for x=0 yield a nonmagnetic ground state with the observed rhombohedral distortion and indicates that doping introduces holes at the Fermi level in magnetic states with significant O 2p and Co t2g character for the undistorted pseudocubic structure. Supercell calculations show stronger magnetism on oxygen atoms having more Sr neighbors.

Medling, S.; Lee, Yuen; Zheng, H.; Mitchell, J.F.; Freeland, J.W.; Harmon, Bruce N.; Bridges, F.

2012-10-12T23:59:59.000Z

193

SUPPLEMENT ANALYSIS OF FOREIGN RESEARCH REACTOR srENT NUCLEAR FUEL  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

FOREIGN RESEARCH REACTOR srENT NUCLEAR FUEL FOREIGN RESEARCH REACTOR srENT NUCLEAR FUEL TRANSPORTATION ALONG OTHER THAN~. PRESENTATIVE ROUTE FROM CONCORD NAVAL WEAPO~~ STATION TO IDAHO NATIONAL ENGINEERING AND ENVIRONMENTAL LADORA TORY Introduction The Department of Energy is planning to transport foreign research reactor spent nuclear fuel by rail from the Concord Naval Weapons Station (CNWS), Concord, California, to the Idaho National Engineering and Environmental Laboratory (INEEL). The environmental analysis supporting the decision to transport, by rail or truck, foreign research reactor spent nuclear fuel from CNWS to the INEEL is contained in +he Final Environmental Impact Statement on a Proposed Nuclear Weapons Nonproliftration Policy Concerning Foreign Research Reactor

194

Synthesis of highly phase pure (Bi, Pb)-Sr-Ca-Cu-O superconductor  

DOE Patents (OSTI)

An article and method of manufacture of (Bi,Pb)-Sr-Ca-Cu-O superconductor are disclosed. The superconductor is manufactured by preparing a first powdered mixture of bismuth oxide, lead oxide, strontium carbonate, calcium carbonate and copper oxide. A second powdered mixture is then prepared of strontium carbonate, calcium carbonate and copper oxide. The mixtures are calcined separately with the two mixtures then combined. The resulting combined mixture is then subjected to a powder in tube deformation and thermal processing to produce a substantially phase pure (Bi,Pb)-Sr-Ca-Cu-O superconductor. 5 figs.

Dorris, S.E.; Poeppel, R.B.; Prorok, B.C.; Lanagan, M.T.; Maroni, V.A.

1994-10-11T23:59:59.000Z

195

Synthesis of highly phase pure (Bi, Pb)-Sr-Ca-Cu-O superconductor  

DOE Patents (OSTI)

An article and method of manufacture of (Bi,Pb)-Sr-Ca-Cu-O superconductor. The superconductor is manufactured by preparing a first powdered mixture of bismuth oxide, lead oxide, strontium carbonate, calcium carbonate and copper oxide. A second powdered mixture is then prepared of strontium carbonate, calcium carbonate and copper oxide. The mixtures are calcined separately with the two mixtures then combined. The resulting combined mixture is then subjected to a powder in tube deformation and thermal processing to produce a substantially phase pure (Bi,Pb)-Sr-Ca-Cu-O superconductor.

Dorris, Stephen E. (La Grange Park, IL); Poeppel, Roger B. (Glen Ellyn, IL); Prorok, Barton C. (Harrisville, PA); Lanagan, Michael T. (Woodridge, IL); Maroni, Victor A. (Naperville, IL)

1994-01-01T23:59:59.000Z

196

Sr{sup 89} -- An unnecessary contaminant of concern in SRS environmental samples  

SciTech Connect

This report documents the technical and time bases used to conclude that the fission product, Sr{sup 89}, should no longer be considered as a contaminant of concern and an analyte in SRS environmental samples. This conclusion is the basis for hard-dollar cost savings suggestions to eliminate its analysis in F/H Areas Seepage Basin monitoring wells and in future soil, sediment and water environmental samples for which the analytical contract is to be awarded prior to October 1, 1993. Environmental Restoration should proactively pursue regulatory approval for the elimination of Sr{sup 89} as an analyte in appropriate environmental samples.

Holcomb, H.P.

1993-07-28T23:59:59.000Z

197

Reinterpretation of Wavelength-Modulated Absorption in SrTiO3 without Coexisting Phases  

Science Journals Connector (OSTI)

In a recently reported measurement of the wavelength-modulated absorption of SrTiO3, the results were interpreted as evidence for the coexistence of two phases over a temperature range of 60 K about the 105-K phase transition. We refute that interpretation by proposing an alternative which is necessary and sufficient to be fully consistent with the known properties of SrTiO3 and which is unconnected with the phase transition. We also propose an experimental test of the validity of this new interpretation.

David Redfield and William J. Burke

1972-02-14T23:59:59.000Z

198

Enhancing the Electron Mobility via Delta-Doping in SrTiO3  

SciTech Connect

We fabricated high-mobility {delta}-doped structures in SrTiO{sub 3} thin films in order to investigate the low temperature electronic transport properties of confined carriers in this system. An enhancement of the electron mobility above the bulk value was observed as the doped layer thickness decreased. High-field Hall measurements revealed that this mobility enhancement originates from higher-mobility electrons in the undoped clean regions, which have quantum-mechanically broadened from the doped layer. Because of the absence of apparent lattice misfit between the layers, this structure is highly suitable for investigating two-dimensional electron gases in SrTiO{sub 3}

Kozuka, Y.

2011-08-11T23:59:59.000Z

199

FATE AND TRANSPORT OF RADIONUCLIDES [U(VI), Sr, Cs] IN VADOSE ZONE SEDIMENTS AT THE HANFORD SITE  

E-Print Network (OSTI)

FATE AND TRANSPORT OF RADIONUCLIDES [U(VI), Sr, Cs] IN VADOSE ZONE SEDIMENTS AT THE HANFORD SITE AND TRANSPORT OF RADIONUCLIDES [U(VI), Sr, Cs] IN VADOSE ZONE SEDIMENTS AT THE HANFORD SITE Abstract by Kenton A that influence radionuclide fate and transport in the Hanford vadose zone. Hanford was established for nuclear

Flury, Markus

200

Stoichiometric, nonstoichiometric, and locally nonstoichiometric SrTiO{sub 3} films grown by molecular beam epitaxy  

SciTech Connect

SrTiO{sub 3} films were grown by reactive molecular beam epitaxy to have varying degrees of both global and local cationic nonstoichiometries (with stoichiometry defined as a 1:1 ratio of Sr:Ti). Slight global excesses of Sr and Ti resulted in two-fold reconstructions in the reflection high-energy electron diffraction patterns along the [110] and [100] azimuths, respectively. Larger global nonstoichiometries (2:1 and 1:2 ratios) were also accommodated into the film's crystalline structure and affected the long-range crystalline order as observed in the x-ray diffraction patterns, both of which were related to the parent perovskite pattern. Local nonstoichiometries were introduced by depositing multiple monolayers (MLs) (from 2 to 33) of SrO and TiO{sub 2} in an alternating fashion, while maintaining the global SrTiO{sub 3} stoichiometry. These layered structures of SrO and TiO{sub 2} blocks inter-reacted during growth to form highly crystalline epitaxial SrTiO{sub 3}. Films grown in this manner with blocks thicker than 8 MLs were fully relaxed and, when the block thicknesses ranged between 8 and 10 MLs, the full widths at half maxima of 2{theta} peaks were narrower than the standard SrTiO{sub 3} films having blocks 1 ML thick.

Fisher, P.; Du, H.; Skowronski, M.; Salvador, P. A. [Department of Materials Science and Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213 (United States); Maksimov, O. [Electro-Optics Center, Pennsylvania State University, Freeport, Pennsylvania 16229 (United States); Weng, X. [Materials Research Institute, Pennsylvania State University, University Park, Pennsylvania 16802 (United States)

2008-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "js rogers sr" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Penetration of 90Sr and 137Cs in deep layers of the Pacific and vertical diffusion rate of deep water  

Science Journals Connector (OSTI)

......June 1962 research-article Article Penetration of 90Sr and 137Cs in deep layers of the Pacific and vertical diffusion rate of deep water Yasuo Miyake * Katsuko...Mabashi, Suginami, Tokyo Vertical penetration of Sr-90 and Cs-137 down to 5......

Yasuo Miyake; Katsuko Saruhashi; Yukio Katsuragi; Teruko Kanazawa

1962-06-01T23:59:59.000Z

202

Radiation dose estimation in computed tomography examinations using NRPB-SR250 software in aretrospective analysis of a patient population  

Science Journals Connector (OSTI)

......NRPB-SR250 software in aretrospective...fi 1 STUK-Radiation and Nuclear Safety Authority...342:d947. RADIATION DOSE ESTIMATION...NRPB-SR250 SOFTWARE IN A RETROSPECTIVE...of medical radiation exposure...to patients safety, frequent......

E. Salminen; H. Niiniviita; J. Kulmala; H. Mttnen; H. Jrvinen

2012-12-01T23:59:59.000Z

203

The novel Rho-GTPase activating gene MEGAP/ srGAP3 has a putative role in severe mental retardation  

Science Journals Connector (OSTI)

...4 of MEGAP/srGAP3, as shown in the middle part of the scheme. Exons are indicated here as red boxes. Markers D3S2405 and SHGC-57635 (white boxes) are located within intronic sequences of MEGAP/srGAP3. Marker IB772 (white box) resides on the X...

Volker Endris; Birgit Wogatzky; Uwe Leimer; Dusan Bartsch; Malgorzata Zatyka; Farida Latif; Eamonn R. Maher; Gholamali Tariverdian; Stefan Kirsch; Dieter Karch; Gudrun A. Rappold

2002-01-01T23:59:59.000Z

204

Tuning the electronic structure of SrTiO{sub 3}/SrFeO{sub 3?x} superlattices via composition and vacancy control  

SciTech Connect

Using density functional theory-based calculations, we explore the effects of oxygen vacancies and epitaxial layering on the atomic, magnetic, and electronic structure of (SrTiO{sub 3}){sub n}(SrFeO{sub 3?x}){sub 1} superlattices. While structures without oxygen vacancies (x = 0) possess small or non-existent band gaps and ferromagnetic ordering in their iron layers, those with large vacancy concentrations (x = 0.5) have much larger gaps and antiferromagnetic ordering. Though the computed gaps depend numerically on the delicate energetic balance of vacancy ordering and on the value of Hubbard U{sub eff} used in the calculations, we demonstrate that changes in layering can tune the band gaps of these superlattices below that of SrTiO{sub 3} (3.2 eV) by raising their valence band maxima. This suggests the possibility that these superlattices could absorb in the solar spectrum, and could serve as water-splitting photocatalysts.

Berger, Robert F. [Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States); Department of Chemistry, Western Washington University, Bellingham, Washington 98225 (United States); Broberg, Daniel P. [Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States); Neaton, Jeffrey B. [Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States); Department of Physics, University of California, Berkeley, California 94720, USA and Kavli Institute for Energy Nanosciences, Berkeley, California 94720 (United States)

2014-04-01T23:59:59.000Z

205

Comparison of the EXAFS Spectra of Heteronuclear MnCa/Sr Model Complexes to the Oxygen-Evolving Mn(4)Ca Complex of Photosystem II  

SciTech Connect

Heterometallic Mn-Ca and Mn-Sr complexes have been prepared and employed as model complexes for Ca and Sr EXAFS spectral comparisons with the Oxygen-Evolving Complex (OEC) of Photosystem II (PS II); these have revealed similarities that support the presence of at least one O atom bridge between the Mn and Ca/Sr in the OEC.

Mishra, A.; Yano, J.; Pushkar, Y.; Abboud, K.A.; Yachandra, V.K.; Christou, G.

2009-06-03T23:59:59.000Z

206

Cenozoic pelagic Sr//Ca records: Exploring a link to paleoproductivity College of Marine Sciences, University of Delaware, Lewes, Delaware, USA  

E-Print Network (OSTI)

Cenozoic pelagic Sr//Ca records: Exploring a link to paleoproductivity K. Billups College of Marine May 2004; accepted 24 May 2004; published 20 July 2004. [1] Recent studies have revealed that Sr/Ca ratios of coccolithophores may be affected by productivity. Here we compile published Sr/Ca data from

Schrag, Daniel

207

90Sr Internal Irradiation of Population Residing in North-East Region of Ukraine  

Science Journals Connector (OSTI)

......Internal Irradiation of Population Residing in North-East Region of Ukraine L. Kalmykov G. Paschenko E. Gur The 90Sr content was investigated for residents of north-east Ukraine (Kharkov region) before (in 1963-1973) and after (in 1992-1993......

L. Kalmykov; G. Paschenko; E. Gur

1997-05-01T23:59:59.000Z

208

Neutron cross sections of the isomeric nuclei KPrn, Sr81m,and Nbgam  

E-Print Network (OSTI)

Neutron cross sections of the isomeric nuclei KPrn, Sr81m,and Nbgam NJ. V. Petrov and A. I. Fiz. 23, 1186-1189 (June 1976) Inelastic neutron acceleration and retardation cross sections is on the order of tenths of a barn. For the Srs7mnucleus the mean energy given to a neutron in a single collision

Shlyakhter, Ilya

209

Transesterification of soybean oil catalyzed by SrTi mixed oxides nanocomposite  

Science Journals Connector (OSTI)

Abstract SrTi mixed oxides as nanocomposite was prepared by solgel method and used as a basic heterogeneous catalyst for transesterification of soybean oil with methanol to methyl esters (biodiesel). The catalyst was characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA/DTA) and CO2-TPD techniques. It was found that reaction of methanol and soybean oil with the molar ratio of 15 in the presence of 1% SrTi (based on the soybean oil weight) with the molar ratio of 0.8 and calcined at 965C as catalyst affords biodiesel in excess of 98% at 60C within 15min. Effect of catalyst calcination temperature, Sr to Ti molar ratio, reaction temperature, catalyst amount, methanol to oil molar ratio and reaction time along with the key role of Sr2TiO4 phase in nanocomposite as an important factor on transesterification efficiency will be discussed in this presentation.

Elnaz Rashtizadeh; Faezeh Farzaneh

2013-01-01T23:59:59.000Z

210

Band-engineered SrTiO{sub 3} nanowires for visible light photocatalysis  

SciTech Connect

We have theoretically investigated the structural, electronic, and optical properties of perovskite SrTiO{sub 3} nanowires for use in visible light photocatalytic applications using pseudopotential density-functional theory calculations. The electronic structure calculations show that the band gap is modified in the SrTiO{sub 3} nanowires compared with that of the bulk. For TiO{sub 2}-terminated nanowires, the mid-band states induced by the combination of oxygen and strontium atoms on the surface lead to a shift in the valence band toward the conduction band without interference from the edge of the conduction band, which reduces the band gap. On the contrary, the electronic states induced by the combination of oxygen and strontium atoms on the surface of SrO-terminated nanowires lead to a shift in the conduction band toward the valence band. The calculated optical results indicate that the absorption edge of the nanowires shift towards the red-light region. These theoretical results suggest that perovskite SrTiO{sub 3} nanowires are promising candidates for use in visible light photocatalytic processes such as solar-assisted water splitting reactions.

Fu, Q.; He, T.; Li, J. L.; Yang, G. W. [State Key Laboratory of Optoelectronic Materials and Technologies, Institute of Optoelectronic and Functional Composite Materials, Nanotechnology Research Center, School of Physics and Engineering, Sun Yat-sen University, Guangzhou 510275, Guangdong (China)

2012-11-15T23:59:59.000Z

211

Crystallography of Interfaces and Grain Size Distributions in Sr-Doped LaMnO3  

E-Print Network (OSTI)

Crystallography of Interfaces and Grain Size Distributions in Sr-Doped LaMnO3 Qinyuan Liu,§ Sudip systems are similar. I. Introduction HIGH-TEMPERATURE solid oxide fuel cells (SOFCs) offer highly efficient, clean, direct conversion of chemical to electrical energy.1 SOFC performance is dictated

Rohrer, Gregory S.

212

Magnetic Quantum Oscillations in SrFe2As2 2009 NHMFL Science Highlight for NSF  

E-Print Network (OSTI)

Magnetic Quantum Oscillations in SrFe2As2 2009 NHMFL Science Highlight for NSF DMR-Award 0654118 at Los Alamos (through a collaboration with the material science group, MPA-10). Magnetic quantum materials by measuring the Fermi surface of the parent magnetic state. Examples of the magnetic quantum

Weston, Ken

213

Re-Os geochronology and coupled Os-Sr isotope constraints on the Sturtian snowball Earth  

Science Journals Connector (OSTI)

...consists of >600 m of green-gray, yellow weathering...finely laminated lime mudstone and siltstone...meters of gray-green siltstone and sandstone...amounts of Sr from clay minerals. Consequently, we...Mining via Colorado Minerals. We thank...alternating between lime mudstone dominated...

Alan D. Rooney; Francis A. Macdonald; Justin V. Strauss; Francis . Duds; Christian Hallmann; David Selby

2014-01-01T23:59:59.000Z

214

Ca and 87/86 Sr isotopes as tracers of silicate weathering in small  

E-Print Network (OSTI)

44/40 Ca and 87/86 Sr isotopes as tracers of silicate weathering in small catchments of the Massif, Laboratory Division, Orléans, France 2 U.S. Geological Survey, Water Resources Division, Menlo Park, CA 94025).Measurements of 44/40 Ca isotope ratios (44/40 Ca measured by the double spike method on TIMS and normalized

Paris-Sud XI, Université de

215

Evaluation of Large Volume SrI2(Eu) Scintillator Detectors  

SciTech Connect

There is an ever increasing demand for gamma-ray detectors which can achieve good energy resolution, high detection efficiency, and room-temperature operation. We are working to address each of these requirements through the development of large volume SrI{sub 2}(Eu) scintillator detectors. In this work, we have evaluated a variety of SrI{sub 2} crystals with volumes >10 cm{sup 3}. The goal of this research was to examine the causes of energy resolution degradation for larger detectors and to determine what can be done to mitigate these effects. Testing both packaged and unpackaged detectors, we have consistently achieved better resolution with the packaged detectors. Using a collimated gamma-ray source, it was determined that better energy resolution for the packaged detectors is correlated with better light collection uniformity. A number of packaged detectors were fabricated and tested and the best spectroscopic performance was achieved for a 3% Eu doped crystal with an energy resolution of 2.93% FWHM at 662keV. Simulations of SrI{sub 2}(Eu) crystals were also performed to better understand the light transport physics in scintillators and are reported. This study has important implications for the development of SrI{sub 2}(Eu) detectors for national security purposes.

Sturm, B W; Cherepy, N J; Drury, O B; Thelin, P A; Fisher, S E; Magyar, A F; Payne, S A; Burger, A; Boatner, L A; Ramey, J O; Shah, K S; Hawrami, R

2010-11-18T23:59:59.000Z

216

Dielectric Properties of SrTiO3 at Low Temperatures  

Science Journals Connector (OSTI)

We have measured the temperature dependence of the dielectric constants for single-domain SrTiO3 crystals. Dielectric anisotropies and deviations from the simple Curie-Weiss law have been observed and are discussed in connection with the structural phase transitions at 110 and 65K.

T. Sakudo and H. Unoki

1971-04-05T23:59:59.000Z

217

Preparation of Bi-Sr-Ca-Cu-O superconductors from oxide-glass precursors  

DOE Patents (OSTI)

A superconductor and precursor therefor from oxide mixtures of Ca, Sr, Bi and Cu. Glass precursors quenched to elevated temperatures result in glass free of crystalline precipitates having enhanced mechanical properties. Superconductors are formed from the glass precursors by heating in the presence of oxygen to a temperature below the melting point of the glass.

Hinks, David G. (Lemont, IL); Capone, II, Donald W. (Northbridge, MA)

1992-01-01T23:59:59.000Z

218

South America Global Horizontal SR Solar Model from INPE and LABSOLAR |  

Open Energy Info (EERE)

727 727 Varnish cache server Browse Upload data GDR 429 Throttled (bot load) Error 429 Throttled (bot load) Throttled (bot load) Guru Meditation: XID: 2142256727 Varnish cache server South America Global Horizontal SR Solar Model from INPE and LABSOLAR Dataset Summary Description (Abstract): Mean values of Global Horizontal Solar Radiation in kWh/m2/day for 40km cells for 1 year (month, season, year) based on data from 1995 to 2005 (Purpose): To provide a set of consistent, reliable, verifiable, and accessible global data sets for international and in-country investors and other stakeholders. (Supplemental Information): The BRASIL-SR model (developed by INPE - National Institute for Space Research) and the ARCVIEW software were used to produce the dataset and SHAPE files. The assessment of reliability levels of the BRASIL-SR model were performed through the evaluation of the deviations shown by the estimated values for solar radiation flux vis-à-vis the values measured at the surface (ground truth). This evaluation was done in two phases. The first phase consisted in an inter-comparison between the core radiation transfer models adopted by the SWERA Project to map the solar energy in the various countries participating in the project. The HELIOSAT model took part in this phase like benchmark due to its employment to map solar energy resources in countries from European Union. In the second phase, the solar flux estimates provided by the BRASIL-SR model were compared with measured values acquired at several solarimetric stations spread along the Brazilian territory. The BRASIL-SR model is not validated for areas covered by snow.

219

A comprehensive review of the XRD data of the primary and secondary phases present in the BSCCO superconductor system: Part 1, Ca-Sr-Cu oxides  

SciTech Connect

X-ray powder patterns for the phases in the CaO-SrO-CuO ternary system, along with the corresponding crystal structures, were obtained from the literature and from the Powder Diffraction File (PDF). Available X-ray diffraction (XRD) patterns were compared with each other and, when possible, with a simulated pattern for each phase, yielding a recommended reference pattern. The simulated powder patterns presented here deal with the phases found within the (Ca, Sr)O, (Ca,Sr){sub 2}CuO{sub 3}, (Ca,Sr){sub 14}Cu{sub 24}O{sub 41}, (Ca,Sr)CuO{sub 2}, (Ca,Sr)Cu{sub 2}O{sub 3}, and (Ca,Sr)Cu{sub 2}O{sub 2} solid solution series and are recommended for the PDF.

Reardon, B.J. [Alfred Univ., NY (United States); Hubbard, C.R. [Oak Ridge National Lab., TN (United States)

1992-01-01T23:59:59.000Z

220

Development of high through-put Sr isotope analysis for monitoring reservoir integrity for CO{sub 2} storage.  

SciTech Connect

Recent innovations in multi-collector ICP-mass spectrometry (MC-ICP-MS) have allowed for rapid and precise measurements of isotope ratios in geological samples. Naturally occurring Sr isotopes has the potential for use in Monitoring, Verification, and Accounting (MVA) associated with geologic CO2 storage. Sr isotopes can be useful for: Sensitive tracking of brine migration; Determining seal rock leakage; Studying fluid/rock reactions. We have optimized separation chemistry procedures that will allow operators to prepare samples for Sr isotope analysis off site using rapid, low cost methods.

Wall, Andy; Jain, Jinesh; Stewart, Brian; Capo, Rosemary; Hakala, Alexandra J.; Hammack, Richard; Guthrie, George

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "js rogers sr" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Revised 8/15/2008 JS Building Evacuation (Dixon Rec)  

E-Print Network (OSTI)

Racquetball Courts. Clear maintenance hallway. Verify ORC area is clear and pick up Evacuation Bag. Clear of the south lawn. If ICC Staff is present, have them clear the ICC. If ORC staff is present, have them clear the ORC. EXIT EAST ENTRY Lifeguard Staff: LIFEGUARD STATION GUARD(S): gather radio, 1st Aid kit

Escher, Christine

222

ARTEMIS Summary Plots for J.S. Halekas  

E-Print Network (OSTI)

/Proton Proton Temp (Moment high Gme res/Fit low Gme res) MagneGc Field ConvecGon E-Field ConnecGon (Red = in wake, Green = connected to wake Blue = connected no good in solar wind, iffy in magnetosheath, okay in magnetosphere

California at Berkeley, University of

223

Preben J.S. Vie Characterisation and Optimisation  

E-Print Network (OSTI)

cells has an elegant approach to solving some of the major environmental issues. Fuel cells have a potential of high fuel efficiency in addition to a pollution free exhaust. I was enchanted. In January 1996 in this thesis evolved. Without Hans Petersen's electronic expertise, the building of the fuel cell test

Kjelstrup, Signe

224

WOOD, TM, AM BAPTISTA, JS KUWABARA, AND AR FLEGAL ...  

Science Journals Connector (OSTI)

Jun 9, 1993 ... the mass balance calculations of Flegal et al. (199 1). The result of .... ity inputs from wastewater treatment plants (Conomos et al. 1979; Spiker...

225

Comparison of bulk R2-zCezCuO4 with superlattice R2-zCezCuO4/SrO/NbO2/SrO/CuO2  

Science Journals Connector (OSTI)

Bulk R2-zCezCuO4 compounds superconduct for trivalent ions R=Pr, Nd, Sm, and Eu, but not for Gd or for Cm (with Th replacing Ce). R2-zCezSr2Cu2NbO10 is a natural superlattice of R2-zCezCuO4 and the layers SrO/NbO2/SrO/CuO2; it exhibits bulk superconductivity for R=Nd, Sm, Eu, and Gd, but not for R=Pr. These differences imply that the superconducting regions in the bulk and in the superlattice must be different, and not both cuprate planes. The primary superconductivity is assigned to interstitial oxygen and Nd-O layers in the bulk and to Sr-O layers in the superlattice.

Howard A. Blackstead and John D. Dow

1999-11-01T23:59:59.000Z

226

Campus sERVICEs-sr assoc Vice pres 200 University Hall, PO Box 210046, Cincinnati OH 45221  

E-Print Network (OSTI)

, CS Operations 61267 cell 703-0391 SCHLEMBACH, Mark Sr Financial Administrator 61241 aRamaRK/DINING s, OH 45221-0017 FAX 60601 CRCMemberServicesDesk 60604 HESTER, Brandi Coordinator, Fitness & Wellness

Papautsky, Ian

227

The use of strontium-to-calcium (Sr/Ca) ratios in otoliths is becoming a standard  

E-Print Network (OSTI)

712 The use of strontium-to-calcium (Sr/Ca) ratios in otoliths is becoming a standard method conditions in wavelength dispersive electron microprobe analysis on the measurement of strontium

Kurapov, Alexander

228

Temperature dependence of the interfacial spin polarization of La2/3Sr1/3MnO3  

Science Journals Connector (OSTI)

We have measured the tunneling magnetoresistance (TMR) of magnetic tunnel junctions based on La2/3Sr1/3MnO3 and various barrier materials (SrTiO3, TiO2, LaAlO3). The interfacial spin polarization of La2/3Sr1/3MnO3 is derived from the TMR and we find that its temperature dependence strongly resembles that of the bulk magnetization and hardly depends on the barrier material. However, the apparent Curie temperature is some 60 K lower. This dependence contrasts with that of the spin polarization of a free La2/3Sr1/3MnO3 surface, as probed by spin-polarized photoemission [J.-H. Park et al., Phys. Rev. Lett. 81, 1953 (1998)], thus evidencing that surfaces and interfaces have very different properties in manganites.

V. Garcia, M. Bibes, A. Barthlmy, M. Bowen, E. Jacquet, J.-P. Contour, and A. Fert

2004-02-12T23:59:59.000Z

229

Study On Magnetic Shielding Type Superconducting Fault Current Limiter Using Bi-Sr-Ca-Cu-O Cylinder  

Science Journals Connector (OSTI)

The power application of a superconductor to restrain a fault current has been researched. A superconducting fault current limiter using a Bi-Sr-Ca-Cu-O cylinder has been developed. This limiter consists of the p...

Michiharu Ichikawa; Hiroyuki Kado; Kunikazu Izumi

1994-01-01T23:59:59.000Z

230

Band Offsets at the Epitaxial Anatase TiO2/n-SrTiO3(001) Interface...  

NLE Websites -- All DOE Office Websites (Extended Search)

to measure valence band offsets at the epitaxial anatase TiO2(002)n-SrTiO3(001) heterojunction prepared by molecular beam epitaxy, Within experimental error, the valance band...

231

Charge Melting & Polaron Collapse in LA1.2SR1.8MN207  

NLE Websites -- All DOE Office Websites (Extended Search)

Charge Melting & Polaron Collapse in LA1.2SR1.8MN207 Charge Melting & Polaron Collapse in LA1.2SR1.8MN207 Recent studies carried out on the Synchrotron Radiation Instrumentation Collaborative Access Team's beamline I-ID-C at the Advanced Photon Source provide new insights into charge melting and polaron collapse. X-ray and neutron scattering measurements directly demonstrate the existence of polarons in the paramagnetic phase of optimally doped colossal magnetoresistive oxides. The polarons exhibit short-range correlations that grow with decreasing temperature, but disappear abruptly at the ferromagnetic transition because of the sudden charge delocalization. The "melting" of the charge ordering as we cool through TC occurs with the collapse of the quasistatic polaron scattering, and provides important new

232

Disproof of solar influence on the decay rates of 90Sr/90Y  

E-Print Network (OSTI)

A custom-built liquid scintillation counter was used for long-term measurements of 90Sr/90Y sources. The detector system is equipped with an automated sample changer and three photomultiplier tubes, which makes the application of the triple-to-double coincidence ratio (TDCR) method possible. After decay correction, the measured decay rates were found to be stable and no annual oscillation could be observed. Thus, the findings of this work are in strong contradiction to those of Parkhomov [1] who reported on annual oscillations when measuring 90Sr/90Y with a Geiger-M\\"uller counter. Sturrock et al. [2] carried out a more detailed analysis of the experimental data from Parkhomov and claimed to have found correlations between the decay rates and processes inside the Sun. These findings are questionable, since they are based on inappropriate experimental data as is demonstrated in this work. A frequency analysis of our activity data does not show any significant periodicity.

Karsten Kossert; Ole Nhle

2014-07-09T23:59:59.000Z

233

La(Sr)FeO3 SOFC Cathodes with Marginal Copper Doping  

SciTech Connect

Abstract (La0.8Sr0.2)0.98Fe0.98Cu0.02O3-? can be sintered directly onto YSZ (without the need for a protective ceria interlayer to prevent inter-diffusion). Though subject to an extended burn-in period (~200 hours), anode-supported YSZ cells utilizing the Cu-doped LSF achieve power densities ranging from 1.3-1.7 W/cm2 at 750C and 0.7V. These cells have also demonstrated 500 hours of stable performance. The results are somewhat surprising given that XRD indicates an interaction between (La0.8Sr0.2)0.98Fe0.98Cu0.02O3-? and YSZ resulting in the formation of strontium zirconate and/or monoclinic zirconia. The amount and type of reaction product was found to be dependent on cathode and electrolyte powder pre-calcination temperatures.

Simner, Steve P.; Anderson, Michael D.; Stevenson, Jeffry W.

2004-08-01T23:59:59.000Z

234

Defects and persistent conductivity in SrTiO{sub 3}  

SciTech Connect

Strontium titanate (SrTiO{sub 3}) is often used as a substrate for oxide thin films such as high-temperature superconductors. It has the perovskite structure and an indirect band gap of 3.25 eV. Our prior work showed that hydrogen impurities form a defect complex that contains two hydrogen atoms. The complex was tentatively attributed to a passivated strontium vacancy. Alternatively, it could be a partially passivated titanium vacancy. In order to create titanium vacancies, we annealed samples in an evacuated ampoule with SrO powder. These samples show unexpected behavior. After illuminating with sub-gap light, the free-electron concentration increases significantly. After the light is turned off, the high conductivity persists at room temperature. We attribute persistent photoconductivity (PPC) to the excitation of an electron from a vacancy into the conduction band, with a low recapture rate.

McCluskey, Matthew D.; Tarun, Marianne C. [Department of Physics and Astronomy, Washington State University, Pullman, WA 99164-2814 (United States)

2014-02-21T23:59:59.000Z

235

Oxygen vacancies at the surface of SrTiO{sub 3} thin films  

SciTech Connect

The two-dimensional electron gas (2DEG) observed at the surface of oxide thin films and at the interface between two oxides has been widely discussed, but the mechanism responsible for this behavior is still not well understood. In this work, we study the properties of the SrTiO{sub 3} (001) surface and show that defects are necessary in order to explain this 2DEG. We study the properties of oxygen vacancies at the TiO{sub 2} and SrO terminated surface, and conclude they can explain the metallic behavior experimentally observed. There is a strong tendency for these vacancies to be localized at the surface, where the formation energy is less than 2.92?eV.

Silva, Alexandre R., E-mail: alexandre.silva@univasf.edu.br [Colegiado de Engenharia Mecnica, Universidade Federal do Vale do So Francisco, 48902-300 Juazeiro, BA (Brazil); Centro de Cincias Naturais e Humanas, Universidade Federal do ABC, 09210-580 Santo Andr, SP (Brazil); Dalpian, Gustavo M., E-mail: gustavo.dalpian@ufabc.edu.br [Centro de Cincias Naturais e Humanas, Universidade Federal do ABC, 09210-580 Santo Andr, SP (Brazil)

2014-01-21T23:59:59.000Z

236

LaSrVO4: a candidate for the spin-orbital liquid state  

SciTech Connect

A layered perovskite LaSrVO4 was studied by neutron diraction, pair distribution function measurement using synchrotron x-ray, susceptibility and specific heat measurements, and first-principles calculation. The results show (i) a weak structural distortion around 100 K with the existence of orbital fluctuations both above and below it; (ii) the absence of the long range magnetic ordering down to 0.35 K but the appearance of a short range magnetic ordering around 11 K with a T2 behavior of the specic heat below it. Meanwhile, the calculation based on the density functional theory predicts a magnetic ordered ground state. All facts indicate a melting of the magnetic ordering due to the orbital fluctuations in LaSrVO4, which makes it a rare candidate for the spin-orbital liquid state related to t2g orbitals.

Dun, Z. L. [University of Tennessee, Knoxville (UTK)] [University of Tennessee, Knoxville (UTK); Garlea, Vasile O [ORNL] [ORNL; Ren, Y. [Argonne National Laboratory (ANL)] [Argonne National Laboratory (ANL); Choi, E. [National High Magnetic Field Laboratory (Magnet Lab), Florida] [National High Magnetic Field Laboratory (Magnet Lab), Florida; Zhang, H. M. [Southeast University, Nanjing, China] [Southeast University, Nanjing, China; Dong, S. [Southeast University, Nanjing, China] [Southeast University, Nanjing, China; Zhou, H. D. [University of Tennessee (UT)] [University of Tennessee (UT)

2014-01-01T23:59:59.000Z

237

High-temperature thermoelectric response of double-doped SrTiO3 epitaxial films  

Science Journals Connector (OSTI)

SrTiO3 is a promising n-type oxide semiconductor for thermoelectric energy conversion. Epitaxial thin films of SrTiO3 doped with both La and oxygen vacancies have been synthesized by pulsed laser deposition. The thermoelectric and galvanomagnetic properties of these films have been characterized at temperatures ranging from 300 to 900 K and are typical of a doped semiconductor. Thermopower values of double-doped films are comparable to previous studies of La-doped single crystals at similar carrier concentrations. The highest thermoelectric figure of merit (ZT) was measured to be 0.28 at 873 K at a carrier concentration of 2.51021?cm?3.

J. Ravichandran; W. Siemons; D.-W. Oh; J. T. Kardel; A. Chari; H. Heijmerikx; M. L. Scullin; A. Majumdar; R. Ramesh; D. G. Cahill

2010-10-28T23:59:59.000Z

238

Hole depletion of ladders in Sr14Cu24O41 induced by correlation effects  

Science Journals Connector (OSTI)

The hole distribution in Sr14Cu24O41 is studied by low-temperature polarization-dependent O K near-edge x-ray absorption fine-structure measurements and state-of-the-art electronic structure calculations that include core-hole and correlation effects in a mean-field approach. Contrary to all previous analysis, based on semiempirical models, we show that correlations and antiferromagnetic ordering favor the strong chain-hole attraction. For the remaining small number of holes accommodated on ladders, leg sites are preferred to rung sites. The small hole affinity of rung sites explains naturally the one-dimensional to two-dimensional crossover in the phase diagram of (La,Y,Sr,Ca)14Cu24O41.

V. Ilakovac; C. Gougoussis; M. Calandra; N. B. Brookes; V. Bisogni; S. G. Chiuzbaian; J. Akimitsu; O. Milat; S. Tomi?; C. F. Hague

2012-02-07T23:59:59.000Z

239

On the Sr I 4607 A Hanle depolarization signals in the quiet Sun  

E-Print Network (OSTI)

The Hanle depolarization signals of Sr 4607 A have been used to estimate the unsigned magnetic flux and magnetic energy existing in the quiet Sun photosphere. However, the Sr 4607 A Hanle signals are not sensitive to the unsigned flux and energy. They only bear information on the fraction of photosphere occupied by magnetic field strengths smaller than the Hanle saturation, which do not contribute to the unsigned flux and energy. We deduce an approximate expression for the relationship between magnetic fill factor and Hanle signal. When applied to existing Hanle depolarization measurements, it indicates that only 40% of the quiet Sun is filled by magnetic fields with a strength smaller than 60 G. The remaining 60% of the surface has field strengths above this limit. Such constraint will be needed to determine the distribution of magnetic field strengths existing in the quiet Sun.

J. Sanchez Almeida

2005-04-15T23:59:59.000Z

240

Vibrational properties of SrCu2O2 studied via DFT calculations and compared to Raman and infrared spectroscopy  

E-Print Network (OSTI)

materials are used for electrostatic shielding, antistatic screens, transparent heating devices, solar cells and even organic light emitting diodes [3, 4]. The vibrational properties of SrCu2O2 crystal are only.5%) and Sr(OH)2.8H2O for 40 h in a nitrogen flow at 950 °C. The reaction product was ground and hot pressed

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "js rogers sr" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
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241

The comparative kinetics of Ca, Sr, And Ra in a freshwater turtle, Trachemys scripta  

SciTech Connect

The accumulation of {sup 45}Ca, {sup 47}Ca, {sup 88}Sr, and {sup 226}Ra was studied in the yellow-bellied slider, a common freshwater turtle of the Southeastern US. The author was particularly interested in testing the hypothesis of competitive inhibition, a concept whereby decreasing the intake of a stable dietary element increases the absorption and retention of chemically similar radionuclides. He established four specific hypotheses and examined the processes of absorption and elimination as a function of stable dietary calcium (2 and 20 mg g{sup {minus}1}), season (summer, fall, winter and spring), and age and sex of the animals (hatchlings, juveniles, adult males, adult females, and gravid females). Turtles were gavaged with radionuclides and the gamma-emitting isotopes were detected during serial whole-body counts performed on the live animals for up to 480 d. The analysis of the beta-emitting {sup 45}Ca was accomplished by chemical separation procedures. Data were fit to a two-component exponential retention model by nonlinear regression. The 10-fold reduction in dietary Ca did not affect the elimination rate constants, and increased the assimilation of Sr and Ra only within juveniles. For all animals the absorption of Ca was significantly greater than Sr, and likewise, Sr was greater than Ra. Mean absorptions were generally higher than values reported for other organisms. Unlike many other organisms, absorption rates did not decline at maturity. He suspects that high Ca demands in constructing and maintaining the massive shell, necessitated by the turtle's survival strategy, may contribute to the high absorption, as well as the lack of a decline at maturity. Elimination rate constants were greatest in the summer and declined to levels that were generally not distinguishable from zero in the spring, winter, and fall seasons.

Hinton, T.G.

1989-01-01T23:59:59.000Z

242

Super-Stable, Highly Monodisperse Plasmonic Nanocrystals with 500 Gold Atoms: Au~500(SR)~120  

SciTech Connect

Determining the composition of plasmonic nanoparticles is challenging due to a deficiency in tools capable of accurately evaluating the number of atoms. Mass spectrometry plays a significant role in determining nanoparticle composition at the atomic level. Significant progress has been made in understanding ultra-small gold nanoparticles, like Au25(SR)18 and Au38(SR)24, with a Au core diameter of 0.97 and 1.3 nm, respectively. However, progress in small plasmonic nanoparticles (2 - 5 nm) is currently challenging, due in part to limitations in synthesizing monodisperse nanoparticles. Here, we report a plasmonic nanocrystal that is highly monodisperse, with an unprecedented variation of less than 20 gold atoms. The composition of the super-stable plasmonic nanocrystals at 115 kDa was determined to contain Au500 10SR120 3. The Au~500 system, named Faraduarate-500, is the largest size to be characterized using high resolution ESI mass spectrometry. Atomic pair distribution function (PDF) data shows that the local atomic structure is consistent with a face-centered cubic (fcc) or Marks decahedral arrangement. High resolution scanning transmission electron microscopy images show that the diameter is 2.4 0.1 nm. The radius of gyration measured by small angle X-ray scattering (SAXS), is 1.05 0.05 nm, and the size and the shape of SAXS molecular envelope are in agreement with TEM and PDF measurements.

Kumara, Chanaka [University of Mississippi, The; Zuo, Xiaobing [Advanced Photon Source, Argonne National Laboratory (ANL); Ilavsky, Dr. Jan [Argonne National Laboratory (ANL); Chapman, Karena [Advanced Photon Source, Argonne National Laboratory (ANL); Cullen, David A [ORNL; Dass, Amala [University of Mississippi, The

2014-01-01T23:59:59.000Z

243

110K Bi-Sr-Ca-Cu-O superconductor oxide and method for making same  

DOE Patents (OSTI)

A superconductor is disclosed consisting of a sufficiently pure phase of the oxides of Bi, Sr, Ca, and Cu to exhibit a resistive zero near 110K resulting from the process of forming a mixture of Bi[sub 2]O[sub 3], SrCO[sub 3], CaCO[sub 3] and CuO into a particulate compact wherein the atom ratios are Bi[sub 2], Sr[sub 1.2-2.2], Ca[sub 1.8-2.4], Cu[sub 3]. Thereafter, heating the particulate compact rapidly in the presence of oxygen to an elevated temperature near the melting point of the oxides to form a sintered compact, and then maintaining the sintered compact at the elevated temperature for a prolonged period of time. The sintered compact is cooled and reground. Thereafter, the reground particulate material is compacted and heated in the presence of oxygen to an elevated temperature near the melting point of the oxide and maintained at the elevated temperature for a time sufficient to provide a sufficiently pure phase to exhibit a resistive zero near 110K. 7 figs.

Veal, B.W.; Downey, J.W.; Lam, D.J.; Paulikas, A.P.

1992-12-22T23:59:59.000Z

244

110K Bi-Sr-Ca-Cu-O superconductor oxide and method for making same  

DOE Patents (OSTI)

A superconductor consisting of a sufficiently pure phase of the oxides of Bi, Sr, Ca, and Cu to exhibit a resistive zero near 110K resulting from the process of forming a mixture of Bi.sub.2 O.sub.3, SrCO.sub.3, CaCO.sub.3 and CuO into aparticulate compact wherein the atom ratios are Bi.sub.2, Sr.sub.1.2-2.2, Ca.sub.1.8-2.4, Cu.sub.3. Thereafter, heating the particulate compact rapidly in the presence of oxygen to an elevated temperature near the melting point of the oxides to form a sintered compact, and then maintaining the sintered compact at the elevated temperature for a prolonged period of time. The sintered compact is cooled and reground. Thereafter, the reground particulate material is compacted and heated in the presence of oxygen to an elevated temperature near the melting point of the oxide and maintained at the elevated temperature for a time sufficient to provide a sufficiently pure phase to exhibit a resistive zero near 110K.

Veal, Boyd W. (Downers Grove, IL); Downey, John W. (Joliet, IL); Lam, Daniel J. (Orland Park, IL); Paulikas, Arvydas P. (Downers Grove, IL)

1992-01-01T23:59:59.000Z

245

No-Arbitrage Pricing for Dividend-Paying Securities in Discrete-Time Markets with Transaction Costs  

E-Print Network (OSTI)

], Rogers [Rog94], Jacod and Shiryaev [JS98], and Kabanov and Stricker [KS01b]). Using advanced concepts was carried out by Kabanov and Stricker [KS01a]. Under the assumption that the state space is finite in Kabanov, R´asonyi, and Stricker [KRS02], where a version of the FFTAP was proven under the efficient

Heller, Barbara

246

Development of Composite Adsorbents for LLW Treatment and Their Adsorption Properties for Cs and Sr - 13127  

SciTech Connect

In this study, the composite adsorbents (KCoFC-NM (NM: natural mordenite), KCoFC-SG (SG: porous silica gel), AMP-SG and so on) were prepared by impregnation-precipitation methods. As for the distribution properties, the largest K{sub d,Cs} value of 3.8 x 10{sup 4} cm{sup 3}/g was obtained for KCoFC-SG (Davi.) composite. KCoFC-SG (NH, MB5D) and T-KCFC also had relatively large K{sub d,Cs} values above 1.0 x 10{sup 4} cm{sup 3}/g. The uptake rate of Cs{sup +} ions was examined by batch method. KCoFC-SG (NH, MB5D) and AMP-SG (Davi.) had relatively large uptake rate of Cs{sup +}, and the uptake attained equilibrium within 1 h. The maximum uptake capacity of Cs{sup +} ions was estimated to be above 0.5 mmol/g for KCoFC-NM and KCoFC-CP composites. KCoFC-X composite had a relatively large uptake capacity of Cs{sup +} ions (0.23 mmol/g > 0.17 mmol/g (T-KCFC)) and this composite also had a selectivity towards Sr{sup 2+} ions; KCoFC-X is effective adsorbent for both Cs{sup +} and Sr{sup 2+} ions. The largest value of K{sub d,Sr} was estimated to be 218 cm{sup 3}/g for titanic acid-PAN. Titanic acid-PAN had the largest uptake rate of Sr{sup 2+} ions, and the uptake attained equilibrium within 8 h. Adsorbability of other nuclides was further examined by batch method. All adsorbents had adsorbability for Rb{sup +} and RuNO{sup 3+} ions. KCoFC-SG (NH), KCoFC-CP and T-KCFC had higher selectivity towards Cs{sup +} than other adsorbents; these adsorbents had adsorbability to Cs{sup +} ions even in the presence of Ba{sup 2+}, Ca{sup 2+} and Mg{sup 2+} ions. The separation factor of K{sub d,Sr}/K{sub d,Ba} for titanic acid-PAN was about 1, indicating that the K{sub d,Sr} for titanic acid-PAN tends to decrease with Ba{sup 2+} concentration. As for the breakthrough properties, the largest 5 % breakpoint and 5 % breakthrough capacity of Cs{sup +} ions were estimated to be 47.1 cm{sup 3} and 0.07 mmol/g for the column of KCoFC-SG (NH), respectively. The order of 5 % breakthrough capacity of Cs{sup +} is as follows; KCoFC-SG (NH) > KCoFC-NM > KCoFC-SG (Q-10) > T-KCFC > KCoFC-X > KCoFC-CP. From the results of batch and column experiments, the composite adsorbent of KCoFC-SG (NH) was effective for the uptake of Cs{sup +} ions, and KCoFC-X composite was useful for the uptake of both Cs{sup +} and Sr{sup 2+} ions. The estimation of irradiation stability and the uptake properties using the actual wastes are further essential for the practical operation. (authors)

Susa, Shunsuke; Mimura, Hitoshi [Dept. of Quantum Science and Energy Engineering, Graduate School of Engineering, Tohoku University, Aramaki-Aza-Aoba 6-6-01-2, Sendai, 980-8579 (Japan)] [Dept. of Quantum Science and Energy Engineering, Graduate School of Engineering, Tohoku University, Aramaki-Aza-Aoba 6-6-01-2, Sendai, 980-8579 (Japan); Ito, Yoshiyuki; Saito, Yasuo [Nuclear Science and Engineering Directorate, Japan Atomic Energy Agency, 2-4 Shirakata Shirone, Naka-gun, Ibaraki, 319-1195 (Japan)] [Nuclear Science and Engineering Directorate, Japan Atomic Energy Agency, 2-4 Shirakata Shirone, Naka-gun, Ibaraki, 319-1195 (Japan)

2013-07-01T23:59:59.000Z

247

Radioactive contamination of cistern waters along the Croatian coast of the Adriatic Sea by [sup 90]Sr  

SciTech Connect

Measurements of radioactive contamination of water samples from cisterns collecting rainwater containing fission products from roofs and other surfaces have been carried out along the Croatian coast of the Adriatic sea since 1968. An exponential decline of radioactivity followed the nuclear moratorium. After the nuclear accident at Chernobyl, higher levels of [sup 137]Cs and [sup 90]Sr were detected again, with cistern waters being the only environmental samples in Croatia in which elevated [sup 90]Sr activities persisted for several years. For the pre-Chernobyl period, the observed mean residence time of [sup 90]Sr in cistern waters, estimated to be 6.2 [+-] 1.9 y, was similar to that calculated for fallout. Contrary, for the post-Chernobyl time, observed [sup 90]Sr mean residence time was calculated to be considerably shorter, reflecting the tropospheric mean residence time. The annual dose for the critical adult population received from [sup 90]Sr and [sup 137]Cs by drinking cistern water was estimated to be very small, in the 1990's less than few [micro]Sv y[sup [minus]1].

Franic, Z.; Lokobauer, N.; Marovic, G. (Inst. for Medical Research and Occupational Health, Zagreb (Croatia). Radiation Protection Unit)

1999-07-01T23:59:59.000Z

248

Electronic and elastic properties of Sr2RuO4 with pressure effects by first principles calculation  

Science Journals Connector (OSTI)

Abstract In this work, electronic and elastic properties along with the pressure effects of the unconventional superconductor Sr2RuO4 are investigated by first principles calculation. Band structure calculation reveals that Sr2RuO4 is a weak metal. The characteristic of the band structure has also been analyzed. The calculated elastic constants reproduce the experimental data well. Analyses disclose that Sr2RuO4 is mechanically stable but anisotropic. The calculated Debye temperature 475.0K is in good agreement with the experimental results. Surveys of the pressure effect on the lattice constants reveal that the a axis is less compressible than the c axis, as found in the experiment. Further investigations illustrate that Sr2RuO4 is mechanically stable up to 50GPa till the elastic constant C44 fails to meet the mechanical stability criterion. The pressure-dependent elastic parameters are also investigated to know their behaviors under pressure. In addition, the bonding properties of Sr2RuO4 at 0GPa and 50GPa are analyzed to explain its elastic behavior under pressure.

Xi-Ping Hao; Hong-Ling Cui; Zhen-Long Lv; Guang-Fu Ji

2014-01-01T23:59:59.000Z

249

Roger Seitz Savannah River National Laboratory  

Office of Environmental Management (EM)

Farming Scenario) IN RESRAD (Subsistence Farming Scenario) Dust, Radon Drinking Water Fish Plant Foods Meat Milk Radioactively Contaminated Material in Soil Soil Ingestion...

250

Creating Living Cellular Machines ROGER D. KAMM  

E-Print Network (OSTI)

. Abstract--Development of increasingly complex integrated cellular systems will be a major challenge the ethical implications of this work. Future prospects as well as ways of addressing these complex ethical healthcare technol- ogies to alternative energy sources to environmental protection. But the potential

Bashir, Rashid

251

Front End 5.1 Chris Rogers,  

E-Print Network (OSTI)

Chicane #12;9 Beam Energy After Chicane and absorber Origin? #12;10 Beam Energy After Cooler Origin? #12 species Examine energy spectrum ­ propose enhanced particle selection scheme #12;6 Beam Power Deposited Drift RF Capture Cooler RF Capture Chicane Taper #12;7 Remaining Beam Power #12;8 Beam Energy Before

McDonald, Kirk

252

TESTIMONY OF DR. ROGER S. PULWARTY  

E-Print Network (OSTI)

contributed to an unusually high number of acres in the United States (U.S.) burned by wildfires. According to the National Interagency Fire Center, there were over 9.2 million acres charred in wildfires in 2012, 2006 and 2007." The Colorado Basin experienced only 44% of its annually expected runoff for Water Year

253

2002 Fusion Summer Study Roger Bangerter  

E-Print Network (OSTI)

............................................................................................................ 48 3.3.2 Plasma Facing Components/Heat Removal.............................................................................. 50 3.3.3 Heating, Current Drive and Fueling ........................................................................................ 53 3.3.4 Vacuum Vessel and Remote Handling

254

Revised List of Monogenic Stocks Roger Chetelat  

E-Print Network (OSTI)

report any problems they detect in our lines, such as aberrant segregation, incorrect phenotypes -- Aubergine P* SPON X NON LA4425 abi -- aborted inflorescence M* CHEM CSM NON 3-803 Aco-1 1 Aconitase-1 V

Ullrich, Paul

255

Interaction of Sr-90 with site candidate soil for demonstration disposal facility at Serpong  

SciTech Connect

Interaction of radiostrontium (Sr-90) with site candidate soil for demonstration disposal facility to be constructed in the near future at Serpong has been done. This activity is to anticipate the interim storage facility at Serpong nuclear area becomes full off condition, and show to the public how radioactive waste can be well managed with the existing technology. To ensure that the location is save, a reliability study of site candidate soil becomes very importance to be conducted through some experiments consisted some affected parameters such as contact time, effect of ionic strength, and effect of Sr{sup +} ion in solution. Radiostrontium was used as a tracer on the experiments and has role as radionuclide reference in low-level radioactive waste due to its long half-live and it's easy to associate with organism in nature. So, interaction of radiostrontium and soil samples from site becomes important to be studied. Experiment was performed in batch method, and soil sample-solution containing radionuclide was mixed in a 20 ml of PE vial. Ratio of solid: liquid was 10{sup ?2} g/ml. Objective of the experiment is to collect the specific characteristics data of radionuclide sorption onto soil from site candidate. Distribution coefficient value was used as indicator where the amount of initial and final activities of radiostrontium in solution was compared. Result showed that equilibrium condition was reached after contact time 10 days with Kd values ranged from 1600-2350 ml/g. Increased in ionic strength in solution made decreased of Kd value into soil sample due to competition of background salt and radiostrontium into soil samples, and increased in Sr ion in solution caused decreased of Kd value in soil sample due to limitation of sorption capacity in soil samples. Fast condition in saturated of metal ion into soil samples was reached due to a simple reaction was occurred.

Setiawan, Budi, E-mail: bravo@batan.go.id [Radwaste Technology Center-National Nuclear Energy Agency, PUSPIPTEK, Serpong-Tangerang 15310 (Indonesia); Mila, Oktri; Safni [Dept. of Chemistry, Fac. of Math. and Nat. Sci., Andalas University, Kampus Limau Manis, Padang-West Sumatra 25163 (Indonesia)

2014-03-24T23:59:59.000Z

256

Ultrafast Magnetization Dynamics of SrRuO3 Thin Films  

SciTech Connect

Itinerant ferromagnet SrRuO3 has drawn interest from physicists due to its unusual transport and magnetic properties as well as from engineers due to its low resistivity and good lattice-matching to other oxide materials. The exact electronic structure remains a mystery, as well as details of the interactions between magnetic and electron transport properties. This thesis describes the use of time-resolved magneto-optical Kerr spectroscopy to study the ferromagnetic resonance of SrRuO3 thin films, where the ferromagnetic resonance is initiated by a sudden change in the easy axis direction in response to a pump pulse. The rotation of the easy axis is induced by laser heating, taking advantage of a temperature-dependent easy axis direction in SrRuO3 thin films. By measuring the change in temperature of the magnetic system in response to the laser pulse, we find that the specific heat is dominated by magnons up to unusually high temperature, ~;;100 K, and thermal diffusion is limited by a boundary resistance between the film and the substrate that is not consistent with standard phonon reflection and scattering models. We observe a high FMR frequency, 250 GHz, and large Gilbert damping parameter, alpha ~;; 1, consistent with strong spin-orbit coupling. We observe a time-dependent change in the easy axis direction on a ps time-scale, and we find that parameters associated with the change in easy axis, as well as the damping parameter, have a non-monotonic temperature dependence similar to that observed in anomalous Hall measurements.

Langner, Matthew C

2009-05-19T23:59:59.000Z

257

Observation of strontium segregation in LaAlO{sub 3}/SrTiO{sub 3} and NdGaO{sub 3}/SrTiO{sub 3} oxide heterostructures by X-ray photoemission spectroscopy  

SciTech Connect

LaAlO{sub 3} and NdGaO{sub 3} thin films of different thicknesses have been grown by pulsed laser deposition on TiO{sub 2}-terminated SrTiO{sub 3} single crystals and investigated by soft X-ray photoemission spectroscopy. The surface sensitivity of the measurements has been tuned by varying photon energy h? and emission angle ?. In contrast to the core levels of the other elements, the Sr 3d line shows an unexpected splitting for higher surface sensitivity, signaling the presence of a second strontium component. From our quantitative analysis we conclude that during the growth process Sr atoms diffuse away from the substrate and segregate at the surface of the heterostructure, possibly forming strontium oxide.

Treske, Uwe; Heming, Nadine; Knupfer, Martin; Bchner, Bernd; Koitzsch, Andreas, E-mail: a.koitzsch@ifw-dresden.de [Institute for Solid State Research, IFW-Dresden, P.O. Box 270116, DE-01171 Dresden (Germany); Di Gennaro, Emiliano; Scotti di Uccio, Umberto; Miletto Granozio, Fabio [CNR-SPIN and Dipartimento di Fisica, Complesso Universitario di Monte S. Angelo, Via Cintia, 80126 Naples (Italy); Krause, Stefan [Helmholtz-Zentrum Berlin, BESSY, Albert-Einstein-Str. 15, 12489 Berlin (Germany)

2014-01-01T23:59:59.000Z

258

Tuning the dead-layer behavior of La{sub 0.67}Sr{sub 0.33}MnO{sub 3}/SrTiO{sub 3} via interfacial engineering  

SciTech Connect

The dead-layer behavior, deterioration of the bulk properties in near-interface layers, restricts the applications of many oxide heterostructures. We present the systematic study of the dead-layer in La{sub 0.67}Sr{sub 0.33}MnO{sub 3}/SrTiO{sub 3} grown by ozone-assisted molecular beam epitaxy. Dead-layer behavior is systematically tuned by varying the interfacial doping, while unchanged with varied doping at any other atomic layers. In situ photoemission and low energy electron diffraction measurements suggest intrinsic oxygen vacancies at the surface of ultra-thin La{sub 0.67}Sr{sub 0.33}MnO{sub 3}, which are more concentrated in thinner films. Our results show correlation between interfacial doping, oxygen vacancies, and the dead-layer, which can be explained by a simplified electrostatic model.

Peng, R.; Xu, H. C.; Xia, M.; Zhao, J. F.; Xie, X.; Xu, D. F.; Xie, B. P., E-mail: bpxie@fudan.edu.cn; Feng, D. L., E-mail: dlfeng@fudan.edu.cn [State Key Laboratory of Surface Physics, Department of Physics, and Advanced Materials Laboratory, Fudan University, Shanghai 200433 (China)

2014-02-24T23:59:59.000Z

259

Inverse Tunnel Magnetoresistance in Co/SrTiO3/La0.7Sr0.3MnO3: New Ideas on Spin-Polarized Tunneling  

Science Journals Connector (OSTI)

We report tunnel magnetoresistance (TMR) measurements on Co/SrTiO3/La0.7Sr0.3MnO3 junctions. The half-metallic La0.7Sr0.3MnO3 electrode is used as a spin analyzer. The large (-50%) inverse TMR indicates a negative spin polarization of Co, in agreement with the density of states (DOS) of the d band in Co. The bias dependence of the TMR, with a maximum inverse TMR at -0.4 V and a crossover to normal TMR above +0.8 V, reflects the structure of this DOS. Our results demonstrate that the choice of the insulating barrier can strongly influence and even reverse the spin polarization of tunneling electrons.

J. M. De Teresa, A. Barthlmy, A. Fert, J. P. Contour, R. Lyonnet, F. Montaigne, P. Seneor, and A. Vaurs

1999-05-24T23:59:59.000Z

260

Alleged Mismanagement of the Department of Energy's Executive Protection Operations, INS-SR-13-02  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Special Inquiry Alleged Mismanagement of the Department of Energy's Executive Protection Operations INS-SR-13-02 April 2013 Department of Energy Washington, DC 20585 April 15, 2013 MEMORANDUM FOR THE SECRETARY FROM: Gregory H. Friedman Inspector General SUBJECT: INFORMATION: Special Inquiry on "Alleged Mismanagement of the Department of Energy's Executive Protection Operations" BACKGROUND The Office of Special Operations (Special Operations) has primary responsibility for the protection of the Secretary of Energy and other executive personnel as designated by the Secretary. Special Operations, a part of the Office of Health, Safety and Security (HSS), employs special agents charged with managing executive protection operations. These special

Note: This page contains sample records for the topic "js rogers sr" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Fabrication of submicron La$_{2-x}$Sr$_{x}$CuO$_{4}$ intrinsic Josephson junction stacks  

E-Print Network (OSTI)

Intrinsic Josephson junction (IJJ) stacks of cuprate superconductors have potential to be implemented as intrinsic phase qubits working at relatively high temperatures. We report success in fabricating submicron La$_{2-x}$Sr$_{x}$CuO$_{4}$ (LSCO) IJJ stacks carved out of single crystals. We also show a new fabrication method in which argon ion etching is performed after focused ion beam etching. As a result, we obtained an LSCO IJJ stack in which resistive multi-branches appeared. It may be possible to control the number of stacked IJJs with an accuracy of a single IJJ by developing this method.

Kubo, Yuimaru; Tanaka, Takayoshi; Ueda, Shinya; Ishii, Satoshi; Tsuda, Shunsuke; Islam, A T M Nazmul; Tanaka, Isao; Takano, Yoshihiko; 10.1063/1.3544037

2011-01-01T23:59:59.000Z

262

Effects of lithium additions on processing of Bi-Sr-Ca-Cu-O superconducting tapes  

SciTech Connect

Lithium additions to the high-temperature superconductor Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub x} (2212) increased superconducting transition temperatures and improved resistance to effects of magnetic fields. In addition, these additions lowered the melting point of 2212 and increased reaction kinetics. Ag-clad tapes fabricated from 2212 with and without Li exhibited profound differences. For heating to temperatures less than or equal to 840{degrees}C, grain growth and sintering were much more substantial in the tapes containing Li.

Goretta, K.C.; Li, Y.F.; Poeppel, R.B. [Argonne National Lab., IL (United States); Wu, S.; Guo, J. [Illinois Univ., Urbana, IL (United States). Dept. of Nuclear Engineering; Schwartz, J. [Florida State Univ., Tallahassee, FL (United States). National High Magnetic Field Laboratory

1994-01-01T23:59:59.000Z

263

Mechanism of nonresonant energy transfer between ions in SrF2:Er3+  

Science Journals Connector (OSTI)

The temperature and magnetic field dependence of the nonresonant energy transfer rate is measured for two ions that exist as a well-defined dimer in SrF2:Er3+. The two ions are crystallographically inequivalent, so the energy transfer can be observed directly and unique transfer rates are obtained without modeling the radial dependence of energy transfer. The transfer is shown to result from a single-phonon-assisted process at low temperatures and a two-phonon-assisted resonant or Orbach process at higher temperatures. No evidence is found for nonresonant two-phonon processes.

J. R. Wietfeldt; D. S. Moore; B. M. Tissue; J. C. Wright

1986-04-15T23:59:59.000Z

264

Intrinsic Spin-Orbit Coupling in Superconducting Delta-Doped SrTiO3 Heterostructures  

SciTech Connect

We report the violation of the Pauli limit due to intrinsic spin-orbit coupling in SrTiO{sub 3} heterostructures. Via selective doping down to a few nanometers, a two-dimensional superconductor is formed, geometrically suppressing orbital pair-breaking. The spin-orbit scattering is exposed by the robust in-plane superconducting upper critical field, exceeding the Pauli limit by a factor of 4. Transport scattering times several orders of magnitude higher than for conventional thin film superconductors enables a new regime to be entered, where spin-orbit coupling effects arise non-perturbatively.

Bell, Christopher

2011-08-19T23:59:59.000Z

265

Anisotropic charge modulation in ladder planes of Sr14?xCaxCu24O41  

Science Journals Connector (OSTI)

The charge response of the ladders in Sr14?xCaxCu24O41 is characterized by dc resistivity, low frequency dielectric, and optical spectroscopy in all three crystallographic directions. The collective charge-density wave screened mode is observed in the direction of the rungs for x=0, 3, and 6, in addition to the mode along the legs. For x=8 and 9, the charge-density-wave response along the rungs fully vanishes, while the one along the legs persists. The transport perpendicular to the planes is always dominated by hopping.

T. Vuleti?; T. Ivek; B. Korin-Hamzi?; S. Tomi?; B. Gorshunov; P. Haas; M. Dressel; J. Akimitsu; T. Sasaki; T. Nagata

2005-01-13T23:59:59.000Z

266

Fabricating superconducting interfaces between artificially grown LaAlO{sub 3} and SrTiO{sub 3} thin films  

SciTech Connect

Realization of a fully metallic two-dimensional electron gas (2DEG) at the interface between artificially grown LaAlO{sub 3} and SrTiO{sub 3} thin films has been an exciting challenge. Here we present for the first time the successful realization of a superconducting 2DEG at interfaces between artificially grown LaAlO{sub 3} and SrTiO{sub 3} thin films. Our results highlight the importance of two factorsthe growth temperature and the SrTiO{sub 3} termination. We use local friction force microscopy and transport measurements to determine that in normal growth conditions the absence of a robust metallic state at low temperature in the artificially grown LaAlO{sub 3}/SrTiO{sub 3} interface is due to the nanoscale SrO segregation occurring on the SrTiO{sub 3} film surface during the growth and the associated defects in the SrTiO{sub 3} film. By adopting an extremely high SrTiO{sub 3} growth temperature, we demonstrate a way to realize metallic, down to the lowest temperature, and superconducting 2DEG at interfaces between LaAlO{sub 3} layers and artificially grown SrTiO{sub 3} thin films. This study paves the way to the realization of functional LaAlO{sub 3}/SrTiO{sub 3} superlattices and/or artificial LaAlO{sub 3}/SrTiO{sub 3} interfaces on other substrates.

Li, Danfeng, E-mail: Danfeng.Li@unige.ch; Gariglio, Stefano; Cancellieri, Claudia; Fte, Alexandre; Stornaiuolo, Daniela; Triscone, Jean-Marc [DPMC, University of Geneva, 24 Quai Ernest Ansermet, 1211 Geneva (Switzerland)

2014-01-01T23:59:59.000Z

267

Synthesis and Structure of Sr3GaN3 and Sr6GaN5:? Strontium Gallium Nitrides with Isolated Planar [GaN3]6- Anions  

Science Journals Connector (OSTI)

Synthesis and Structure of Sr3GaN3 and Sr6GaN5:? Strontium Gallium Nitrides with Isolated Planar [GaN3]6- Anions ... 9-19 In most cases, an alkaline earth metal is introduced into a Na melt to enhance the solubility of nitrogen, and is incorporated in the nitride product. ... The container was sealed by welding its open end in an argon atmosphere with active water-cooling so that NaN3 did not decompose due to heating during the welding. ...

Dong Gon Park; Zoltn A. Gl; Francis J. DiSalvo

2003-02-13T23:59:59.000Z

268

Raman spectra and magnetization of all-ferromagnetic superlattices grown on (110) oriented SrTiO{sub 3}  

SciTech Connect

Superlattices consist of two ferromagnets La{sub 0.7}Sr{sub 0.3}MnO{sub 3} (LSMO) and SrRuO{sub 3} (SRO) were grown in (110)-orientation on SrTiO{sub 3} (STO) substrates. The x-ray diffraction and Raman spectra of these superlattices show the presence of in-plane compressive strain and orthorhombic structure of less than 4 u.c. thick LSMO spacer, respectively. Magnetic measurements reveal several features including reduced magnetization, enhanced coercivity, antiferromagnetic coupling, and switching from antiferromagnetic to ferromagnetic coupling with magnetic field orientations. These magnetic properties are explained by the observed orthorhombic structure of spacer LSMO in Raman scattering which occurs due to the modification in the stereochemistry of Mn at the interfaces of SRO and LSMO.

Behera, B. C.; Ravindra, A. V.; Padhan, P. [Department of Physics, Indian Institute of Technology Madras, Chennai 600036 (India); Prellier, W. [Laboratoire CRISMAT, CNRS UMR 6508, ENSICAEN, 6 Bd du Marehal Juin, F-14050 Caen Cedex (France)

2014-03-03T23:59:59.000Z

269

Optical absorption in epitaxial La{sub 1-x}Sr{sub x}FeO{sub 3} thin films  

SciTech Connect

We report the dependence of optical absorption on Sr concentration in La{sub 1-x}Sr{sub x}FeO{sub 3} (LSFO) (x{<=}0.4) perovskite thin films. Strained epitaxial films were deposited on SrTiO{sub 3} substrates using oxide molecular beam epitaxy. We find systematic changes in the optical absorption spectra with increasing x including a red-shift of transition energies and the increasing presence of a lower energy transition within the fundamental gap of pure LaFeO{sub 3}. These results serve as a demonstration of the complex manner in which absorption spectra can be altered in complex oxides via heterovalent A-site substitution.

Scafetta, M D.; Xie, Y. J.; Torres, M.; Spanier, J. E.; May, S. J. [Department of Materials Science and Engineering, Drexel University, Philadelphia, Pennsylvania 19104 (United States)] [Department of Materials Science and Engineering, Drexel University, Philadelphia, Pennsylvania 19104 (United States)

2013-02-25T23:59:59.000Z

270

SR0112  

NLE Websites -- All DOE Office Websites (Extended Search)

News Release Logo News Release Logo For Immediate Release October 18, 2001 Media Contact: Julie Petersen (803) 725-2889 DOE ANNOUNCES RECORD OF DECISION ON SRS SALT WASTE PROCESSING ALTERNATIVES Flag Ribbon Art AIKEN, SC -- The U.S. Department of Energy (DOE) announced that it has selected Caustic Side Solvent Extraction as the Savannah River Site (SRS) Salt Processing preferred alternative for treating salt-bearing high-level radioactive waste. The Department's decision is outlined in a Record of Decision (ROD) that was published in the Federal Register earlier this week. A Supplemental Environmental Impact Statement (EIS) analyzed and evaluated the potential environmental impacts of four action alternatives for treating the high-level radioactive salt waste - by separating the high-activity salt waste from the low-activity salt waste - as a precursor for solidifying it in glass at the Savannah River Site's Defense Waste Processing Facility (DWPF). Based on this analysis, and the results of laboratory-scale research and development and independent reviews, DOE determined that any of the following alternatives evaluated could be implemented with minimum environmental impacts: Small Tank Precipitation, Ion Exchange, Solvent Extraction, and Direct Disposal in Grout. However, the Department selected the Caustic Side Solvent Extraction alternative because it has fewer technical uncertainties and DOE has experience with similar solvent extraction processes.

271

SR0206  

NLE Websites -- All DOE Office Websites (Extended Search)

17, 2002 17, 2002 Media Contact: Julie Petersen (803) 725-2889 DOE Announces Conceptual Design Contracts For SRS Salt Waste Processing Facility Flag Ribbon Art Aiken, SC - Today the Department of Energy (DOE) took the first step in commissioning a Salt Waste Processing Facility (SWPF) at the Savannah River Site (SRS) by awarding two contracts for the facility's conceptual design. The SWPF is intended to process the high-level radioactive waste salt solutions currently stored in underground tanks at SRS. The Department awarded Engineering, Procurement and Construction (EPC) contracts to Parsons Infrastructure & Technology Group, Inc., and Foster Wheeler USA Corporation for preparation of conceptual designs (Phase I) for the SWPF. The contracts are being awarded today after a full and open competition. Four companies submitted proposals that were extensively reviewed by the Department.

272

SR0011  

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26, 2000 26, 2000 Media Contact: Rick Ford (803) 725-2889 Energy Secretary Bill Richardson to Visit Savannah River Site Groundbreaking for Tritium Facility, 50th Anniversary on Agenda Flag Ribbon Art Media Advisory Secretary of Energy Bill Richardson will be at the Savannah River Site and Fort Discovery on Thursday, July 27, to break ground for the new $400 million Tritium Extraction Facility and celebrate the 50th Anniversary of the Savannah River Site. Secretary Richardson will be joined by Gen. John Gordon, Administrator of the National Nuclear Security Administration; Dr. Carolyn Huntoon, Assistant Secretary for Environmental Management; and Madelyn Creedon, Deputy Administrator for Defense Programs. Secretary Richardson will also participate in a celebration of the site's 50th anniversary. At the celebration, Richardson will make brief remarks, present local elementary students with "Hands on Science" certificates, view exhibits and attend a reception for community leaders.

273

SR9807  

NLE Websites -- All DOE Office Websites (Extended Search)

4, 1999 4, 1999 Media Contact: Bill Taylor (803) 725-2889 DOE Teams with State on Dedication and Management of 10,000 Acre Crackerneck Wildlife Management Area and Ecological Reserve Flag Ribbon Art Aiken, S.C. (June 24) -- Secretary of Energy Bill Richardson today designated 10,000 acres of the Savannah River Site (SRS) as a biological and wildlife refuge creating the Crackerneck Wildlife Management Area and Ecological Reserve. The agreement, co-signed by South Carolina Department of Natural Resources Director Dr. Paul Sandifer, gives the state overall management responsibility for the reserve. The creation of the Crackerneck Wildlife Management Area and Ecological Reserve will preserve the unique plant and wildlife habitat that lies on the site’s western boundary along the Savannah River, south of the town of Jackson, S.C. The Crackerneck area is recognized as a habitat for several wildlife species, including a variety of threatened and endangered animal species.

274

SR0209  

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4, 2002 4, 2002 Media Contact: Bill Taylor (803) 725-2889 DOE/NNSA to Host Modern Pit Facility Media Availability Flag Ribbon Art U. S. Department of Energy National Nuclear Security Administration (NNSA) representatives will host a media availability at 4 p.m. on Monday, October 28, 2002, to discuss the upcoming public scoping meeting for the development of a Modern Pit Facility. The media availability session will be held at 4 p.m. in the North Augusta Community Center, 101 Brookside Drive, North Augusta, SC. The public scoping meeting will be held the following evening, October 29 at the same location. An informational open house and registration will begin at 6 p.m. with the formal scoping meeting set for 7 to 10 p.m. The meeting will provide the public with an opportunity to present comments, ask questions and discuss issues with NNSA representatives.

275

SR9909  

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They have progressed from employee involvement in safety to employee ownership of our safety culture." In a separate Site ceremony, Westinghouse Savannah River Company was...

276

SR9916  

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Plan. The draft SRS Strategic Plan 2000 has been developed with input from the Site's workforce and management team. The plan will be used to guide the missions and work...

277

SR0004  

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5, 1999 Media Contact: James R. Giusti (803) 725-2889 DOE Releases Accident Investigation Report On FB-Line Workers' Plutonium Intake Flag Ribbon Art Aiken, SC - The Department of...

278

SR0606  

NLE Websites -- All DOE Office Websites (Extended Search)

Media Contact: James Giusti (803) 952-7697 DOE Issues Draft Request for Proposals for Savannah River Site Contractor WASHINGTON , DC -- The Department of Energy (DOE) today...

279

SR0608  

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S.C., With the completion of remediation work at the U.S. Department of Energy (DOE) Savannah River Sites (SRS) T Area, SRS has achieved its first area closure, transforming...

280

SR0006  

NLE Websites -- All DOE Office Websites (Extended Search)

and technology are on display at the Department of Energy Environmental Management Science Program (EMSP) National Workshop in Atlanta, GA on April 25-27 at the Westin...

Note: This page contains sample records for the topic "js rogers sr" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
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281

SR0705  

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energy management and efficiency. The overall goal of the projects is to make it self sustaining by utilizing only renewable biomass waste products from within the SRS for its...

282

SR0103  

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media representatives are invited to observe the first shipment of transuranic, or TRU, waste leave the Savannah Rive Site (SRS) for the Waste Isolation Plant (WIPP), located in...

283

SR0603  

NLE Websites -- All DOE Office Websites (Extended Search)

July 10, 2006 Media Contact: Julie Petersen (803) 952-7697 Startup of Second Nuclear Waste Storage Facility at the Savannah River Site DOE Managed Small Business Contract Safely...

284

SR0704  

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3, 2004 Media Contact: Julie Petersen (803) 952-7697 Media Advisory: Media Day On SRS Accelerated Cleanup Flag Ribbon Art NOTE TO EDITORS AND NEWS DIRECTORS: AIKEN, S.C. (July 13,...

285

SR0201  

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February 5, 2001 Media Contact: Bill Taylor (803) 725-2889 SRS Environmental Management FY2003 Budget and Top-To-Bottom Review Presented At Friday Meeting Flag Ribbon Art The...

286

SR0018  

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Rick Ford (803) 725-2889 Wackenhut Receives Award Fee Flag Ribbon Graphic The Department of Energy (DOE) has determined the performance award fee earned by Wackenhut Services,...

287

SR0008  

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Wachenhut Receives Award Fee Flag Ribbon Art Note to Editors and News Directors The Department of Energy (DOE) has determined the performance award fee earned by Wackenhut...

288

SR0002  

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, 2000 Media Contact: Bill Taylor (803) 725-2889 General Eugene Habiger, DOE Security Czar To Visit SRS Flag Ribbon Art General Eugene Habiger (USAF Retired), the Department of...

289

SR0014  

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November 30, 2000 Media Contact: Jim Giusti (803) 725-2889 Draft EIS Issued On Future Closures Of SRS High-Level Waste Tanks Flag Ribbon Graphic AIKEN, SC; November 30 - The...

290

SR0207  

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30, 2002 Media Contact: Julie Petersen (803) 725-2889 Notice To Editors: DOE Releases SRS History Book Flag Ribbon Art WHO: U.S. Department of Energy (DOE) Savannah River...

291

SR0107  

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4, 2001 Media Contact: Bill Taylor (803) 725-2889 DOE & DOL Hold Public Meetings For Energy Employees Occupational Illness Compensation Program At Flag Ribbon Art Aiken SC (June...

292

SR0106  

NLE Websites -- All DOE Office Websites (Extended Search)

31, 2001 Media Contact: Rick Ford (803) 725-2889 DOE Announces Wackenhut Services Inc. Award Fee Flag Ribbon Art Note To Editors and News Directors: The Department of Energy (DOE)...

293

SR0003  

NLE Websites -- All DOE Office Websites (Extended Search)

4, 2000 Media Contact: Bill Taylor (803) 725-2889 DOE To Present Savannah River Site's Upcoming Fiscal Year 2001 Budget Flag Ribbon Art Aiken, SC -- The public is invited to view...

294

SR0302  

NLE Websites -- All DOE Office Websites (Extended Search)

8, 2003 Media Contact: Rick Ford (803) 725-2889 DOE Announces WSI Award Fee Flag Ribbon Art The Department of Energy (DOE) has determined the performance award fee earned by...

295

SR0007  

NLE Websites -- All DOE Office Websites (Extended Search)

Environmental Cleanup Technology Conference To Be Held Flag Ribbon Art The Savannah River Operations Office of the Department of Energy is hosting the Environmental Restoration...

296

SR0601  

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May 4, 2006 Media Contact: James Giusti (803) 952-7697 SRS Makes 200th Shipment of Low Enriched Uranium AIKEN, S.C. -- A joint National Nuclear Security Administration and Office...

297

SR0301  

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January 31, 2003 Media Contact: Bill Taylor (803) 725-2889 Helicopters to Conduct Equipment Tests Over Savannah River Site During February Flag Ribbon Art U.S. Government...

298

SR0304  

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12, 2003 Media Contact: Jim Giusti (803) 725-2889 NNSA Official Recognize Rapid Completion Of Key Tritium Processing Components Flag Ribbon Art AIKEN, S.C. (June 12)- Dr. Everet...

299

SR0015  

NLE Websites -- All DOE Office Websites (Extended Search)

, 2000 Media Contact: Jim Giusti (803) 725-2889 WSRC Receives Award Fee Flag Ribbon Graphic Note to Editors and News Directors The Department of Energy (DOE) has determined the...

300

SR0701?  

NLE Websites -- All DOE Office Websites (Extended Search)

8, 2007 Media Contact: James Giusti (803) 952-7697 james-r.giusti@srs.gov DOE Issues Draft Request for Proposals for SRS Liquid Waste Contract WASHINGTON , DC -- The U.S....

Note: This page contains sample records for the topic "js rogers sr" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

SR0501  

NLE Websites -- All DOE Office Websites (Extended Search)

14, 2005 Media Contact: James Giusti (803) 952-7697 End State Vision at Savannah River Site Made Public Flag Ribbon Art Aiken, S.C. - The Department of Energy's Savannah River...

302

SR0001  

NLE Websites -- All DOE Office Websites (Extended Search)

For Immediate Release January 12, 2000 Media Contact: Bill Taylor (803) 725-2889 Nuclear Security Oversight Panel Visits SRS As Part Of NSSA Tour Flag Ribbon Art Representatives...

303

SR0016  

NLE Websites -- All DOE Office Websites (Extended Search)

5, 2000 Media Contact: Bill Taylor (803) 725-2889 DOE Meeting To Focus On New Compensation Program For Work-Related Illness Effecting SRS Employees Flag Ribbon Graphic Aiken, SC -...

304

SR0305  

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2, 2003 Media Contact: Jim Giusti (803) 725-2889 DOE Hosts Public Workshops on Historical Preservation of SRS' Cold War Resources Flag Ribbon Art Aiken, SC - The Department of...

305

SR0205  

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19, 2002 Media Contact: Julie Petersen (803) 725-2889 DOE Announces Record Of Decision On SRS High-Level Waste Tank Closure Flag Ribbon Art AIKEN, SC -- The U.S. Department of...

306

SR0503  

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14, 2005 Media Contact: James Giusti (803) 952-7697 NNSA Breaks Ground On MOX Facility Site Preparation Begins at Savannah River Site Flag Ribbon Art Aiken, S.C. - The National...

307

SR0505  

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1, 2005 Media Contact: James Giusti (803) 952-7697 Subcontract Awarded for MOX Facility Site Preparation Work Flag Ribbon Art Aiken, S.C. - The National Nuclear Security...

308

SR0703  

NLE Websites -- All DOE Office Websites (Extended Search)

and non-proliferation programs. This M&O contract will not include management of SRS liquid waste programs, which is the subject of a separate procurement. The RFP details the...

309

SR0303  

NLE Websites -- All DOE Office Websites (Extended Search)

States and Canada will meet in Columbia, South Carolina, June 3-5 to share information on innovative and cost-effective environmental cleanup techniques. The conference-the...

310

SR0101  

NLE Websites -- All DOE Office Websites (Extended Search)

Area's cafeteria, starting at 2 p.m. The site-wide observance will feature Mr. Marshall Smith of Orangeburg, S.C., noted for his renditions of Dr. King's speeches. Media...

311

SR0005  

NLE Websites -- All DOE Office Websites (Extended Search)

Secretary for Environmental Management. Other scheduled speakers include Gerald Boyd, DOE Deputy Assistant Secretary for Science and Technology; Daryle Bush, President of...

312

SR0804  

NLE Websites -- All DOE Office Websites (Extended Search)

by the Department and the National Nuclear Security Administration (NNSA) to resume all work that involves the CREM materials," said Ron Bartholomew, Director of...

313

SR0203  

NLE Websites -- All DOE Office Websites (Extended Search)

of Energy (DOE) Savannah River Site (SRS) announced today the availability of the Final Environmental Impact Statement (EIS) on the proposed closing of additional high-level...

314

SR9902  

NLE Websites -- All DOE Office Websites (Extended Search)

8, 1999 8, 1999 Media Contact: Rick Ford (803) 725-2889 DOE To Present Savannah River Site's Upcoming Fiscal Year 2000 Budget Flag Ribbon Art Aiken, SC - (Jan. 28, 1999) The public is invited to view the Department of Energy's (DOE) Fiscal Year 2000 budget presentation that will be provided via satellite downlink starting at 1:00 p.m., Monday, February 1, 1999, at Aiken Technical College's Learning Resource Center amphitheater. The annual DOE budget roll out will feature an introduction by Secretary of Energy Bill Richardson. Following the Energy Secretary, there will be a presentation of the Department's Environmental Management budget which provides approximately 90 per cent of the operational funding for the Savannah River Site (SRS). Immediately following the Department's "roll out" event, there will be a detailed DOE Savannah River Operations Office presentation to explain how the Fiscal Year 2000 budget will be used at SRS. A question-and-answer session will be included.

315

Pulsed source of ultra low energy positive muons for near-surface ?SR studies  

Science Journals Connector (OSTI)

We have produced a pulsed beam of low energy (ultra slow) polarized positive muons (LE-?+) and performed several demonstration muon spin rotation/relaxation (?SR) experiments at ISIS RIKEN-RAL muon facility in UK. The energy of the muons implanted into a sample is tuneable between 0.1keV and 18keV. This allows us to use muons as local magnetic microprobes on a nanometre scale. The control over the implantation depth is from several nanometres to hundreds of nanometres depending on the sample density and muon energy. The LE-?+ are produced by two-photon resonant laser ionization of thermal muonium atoms. Currently ?15 LE-?+/s with 50% spin polarization are transported to the ?SR sample position, where they are focused to a small spot with a diameter of only 4mm. The overall LE-?+ generation efficiency of 3נ10?5 is comparable to that obtained when moderating the muon beam to epithermal energies in simple van der Waals bound solids. In contrast to other methods of LE-?+ generation, the implantation of the muons into the sample can be externally triggered with the duration of the LE-?+ pulse being only 7.5ns. This allows us to measure spin rotation frequencies of up to 40MHz.

Pavel Bakule; Yasuyuki Matsuda; Yasuhiro Miyake; Kanetada Nagamine; Masahiko Iwasaki; Yutaka Ikedo; Koichiro Shimomura; Patrick Strasser; Shunshuke Makimura

2008-01-01T23:59:59.000Z

316

Synthesis and characterization of Sr3Al2O6 nanocomposite as catalyst for biodiesel production  

Science Journals Connector (OSTI)

Abstract SrAl mixed oxides nanocomposite as Sr3Al2O6 was prepared by solgel method and used as a basic heterogeneous catalyst for transesterification of soybean oil to methyl esters (biodiesel) by methanol. The prepared catalyst was characterized using X-ray diffraction (XRD), Transmission electron microscope (TEM), thermogravimetric analysis (TGA/DTA), temperature-programmed desorption (TPD) and nitrogen adsorptiondesorption techniques. The response surface methodology (RSM) based on the BoxBehnken design was employed to investigate the effects of methanol to oil molar ratio, reaction time, catalyst amount and specifically the effect of interaction between process variables on the conversion of oil to biodiesel. Results from this study revealed that individual as well as bilateral variables interactions significantly affect the yield of biodiesel. With this information, it was found that utilization of methanol to oil molar ratio of 25 and 1.3wt.% of catalyst within reaction time of 61min and gave the biodiesel yield of 95.70.5%.

Elnaz Rashtizadeh; Faezeh Farzaneh; Zahra Talebpour

2014-01-01T23:59:59.000Z

317

Magnetic and crystal structures of Sr2IrO4: A neutron diffraction study  

Science Journals Connector (OSTI)

We report a single-crystal neutron diffraction study of the layered Sr2IrO4. This work unambiguously determines the magnetic structure of the system and reveals that the spin orientation rigidly tracks the staggered rotation of the IrO6 octahedra in Sr2IrO4. The long-range antiferromagnetic order has a canted spin configuration with an ordered moment of 0.208(3) ?B/Ir site within the basal plane; a detailed examination of the spin canting yields 0.202(3) and 0.049(2) ?B/site for the a axis and the b axis, respectively. It is intriguing that forbidden nuclear reflections of space group I41/acd are also observed in a wide temperature range from 4 K to 600 K, which suggests a reduced crystal structure symmetry. This neutron-scattering work provides a direct, well-refined experimental characterization of the magnetic and crystal structures that are crucial to the understanding of the unconventional magnetism exhibited in this unusual magnetic insulator.

Feng Ye, Songxue Chi, Bryan C. Chakoumakos, Jaime A. Fernandez-Baca, Tongfei Qi, and G. Cao

2013-04-22T23:59:59.000Z

318

Neutron diffraction studies and magnetism in Ti doped SrFeO{sub 3??} systems  

SciTech Connect

The magnetic ground state of single phase tetragonal crystal structure with I4/mmm space group SrFe{sub 1?x}Ti{sub x}O{sub 3??} (x?=?0.2 and 0.3) is investigated from 2?K to 300?K. Strong irreversibility is observed in zero-field-cooled (ZFC) and field-cooled DC magnetization curves. Arrott plots show the absence of spontaneous magnetization (M{sub S}) down to 2?K, ruling out the possibility of long range ferromagnetic order. Neutron diffraction measurements carried out at H?=?0, 7?T (field cooled) at several temperatures above and below the T* (temperature at which M{sub ZFC}(T) is maximum) do not show any additional peaks and also no difference in intensity rules out, both the long range antiferromagnetic and ferromagnetic orders. Hence, the combined study of dc magnetization and neutron diffraction results reveals cluster spin glass behavior in SrFe{sub 1?x}Ti{sub x}O{sub 3??} (x?=?0.2 and 0.3)

Sendil Kumar, A.; Srinath, S., E-mail: srinath@uohyd.ac.in [School of Physics, University of Hyderabad, Hyderabad 500 046 (India); Babu, P. D. [UGC-DAE Consortium for Scientific Research, R-5 Shed, B.A.R.C, Mumbai 400 085 (India)

2014-03-14T23:59:59.000Z

319

Crystal structure determination of the oxynitride Sr{sub 2}TaO{sub 3}N  

SciTech Connect

The crystal structure of the strontium tantalum oxynitride Sr{sub 2}TaO{sub 3}N has been resolved by Rietveld refinement using time-of-flight neutron powder diffraction data. The structure is of the K{sub 2}NiF{sub 4} type with a partially ordered anion sublattice (tetragonal, I4/mmm, a = 4.04127(3) {angstrom}, c = 12.6073(2) {angstrom}, c/a = 3.120, Z = 2). The tantalum atoms are at the center of TaO{sub 2}(O, N){sub 4} octahedra built up from two oxygen atoms at the apexes and four (N + O) atoms statistically forming the median plane. The strontium atoms have a coordination number of nine: SrO{sub 5}(O, N){sub 4}. The profile agreement factors are R{sub p} = 0.022, R{sub wp} = 0.016, R{sub exp} = 0.012, and R{sub 1} = 0.063.

Diot, N.; Marchand, R. [Univ. de Rennes 1 (France). Lab. Verres et Ceramiques] [Univ. de Rennes 1 (France). Lab. Verres et Ceramiques; Haines, J.; Leger, J.M. [CNRS, Meudon (France). Lab. de Physicochimie des Materiaux] [CNRS, Meudon (France). Lab. de Physicochimie des Materiaux; Macaudiere, P. [Centre de Recherches d`Aubervilliers (France)] [Centre de Recherches d`Aubervilliers (France); Hull, S. [Rutherford Appleton Lab., Didcot (United Kingdom). ISIS Science Div.] [Rutherford Appleton Lab., Didcot (United Kingdom). ISIS Science Div.

1999-09-01T23:59:59.000Z

320

Crystal structure determination of the oxynitride Sr[sub 2]TaO[sub 3]N  

SciTech Connect

The crystal structure of the strontium tantalum oxynitride Sr[sub 2]TaO[sub 3]N has been resolved by Rietveld refinement using time-of-flight neutron powder diffraction data. The structure is of the K[sub 2]NiF[sub 4] type with a partially ordered anion sublattice (tetragonal, I4/mmm, a = 4.04127(3) [angstrom], c = 12.6073(2) [angstrom], c/a = 3.120, Z = 2). The tantalum atoms are at the center of TaO[sub 2](O, N)[sub 4] octahedra built up from two oxygen atoms at the apexes and four (N + O) atoms statistically forming the median plane. The strontium atoms have a coordination number of nine: SrO[sub 5](O, N)[sub 4]. The profile agreement factors are R[sub p] = 0.022, R[sub wp] = 0.016, R[sub exp] = 0.012, and R[sub 1] = 0.063.

Diot, N.; Marchand, R. (Univ. de Rennes 1 (France). Lab. Verres et Ceramiques); Haines, J.; Leger, J.M. (CNRS, Meudon (France). Lab. de Physicochimie des Materiaux); Macaudiere, P. (Centre de Recherches d'Aubervilliers (France)); Hull, S. (Rutherford Appleton Lab., Didcot (United Kingdom). ISIS Science Div.)

1999-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "js rogers sr" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Accurate calculations of Sr properties for a high-accuracy optical clock  

E-Print Network (OSTI)

We have carried out calculations towards the goal of reducing the inaccuracy of the Sr optical atomic clock to 1$\\times10^{-17}$ and below. We calculated a.c. polarizabilities of the $5s^2 ^1S_0$ and $5s5p ^3P_0^o$ clock states that are important for reducing the uncertainty of blackbody radiation-induced frequency shifts for the $^1S_0 - ^3P_0^o$ clock transition. We determined four low-lying even-parity states whose total contribution to the static polarizability of the $^3P_0^o$ clock state is at the level of 90%. We show that if the contribution of these states is experimentally known with 0.1% accuracy, the same accuracy can be achieved for the total polarizability of the $^3P_0^o$ state. The corresponding uncertainty for the blackbody shift at a fixed room temperature will be below 1$\\times10^{-17}$. The calculations are confirmed by a number of experimental measurements on various Sr properties.

S. G. Porsev; Andrew D. Ludlow; Martin M. Boyd; Jun Ye

2008-07-09T23:59:59.000Z

322

Magnetic order in the frustrated Ising-like chain compound Sr3NiIrO6 E. Lefranois,1, 2, 3,  

E-Print Network (OSTI)

Magnetic order in the frustrated Ising-like chain compound Sr3NiIrO6 E. Lefrançois,1, 2, 3, L. C and temperature dependence of the magnetization of single crystals of Sr3NiIrO6. These measurements evidence the presence of an easy axis of anisotropy and two anomalies in the magnetic susceptibility. Neutron powder

Boyer, Edmond

323

Isotope compositions (C, O, Sr, Nd) of vertebrate fossils from the Middle Eocene oil shale of Messel, Germany: Implications for their taphonomy  

E-Print Network (OSTI)

Isotope compositions (C, O, Sr, Nd) of vertebrate fossils from the Middle Eocene oil shale isotopes Diagenesis Enamel Messel Propalaeotherium The Middle Eocene oil shale deposits of Messel (~0.706) due to diagenetic Sr uptake from the lake water/oil shale. Enamel 18 Op values (~18 ± 0

Schöne, Bernd R.

324

Strontium oxide segregation at SrLaAlO4 surfaces A.E. Becerra-Toledo , L.D. Marks  

E-Print Network (OSTI)

Strontium oxide segregation at SrLaAlO4 surfaces A.E. Becerra-Toledo , L.D. Marks Northwestern surfaces We report observable segregation of strontium oxide at the surface of strontium lanthanum-dispersive X-ray spectroscopy showed that Sr and O segregation occurs on strontium lanthanum aluminate surfaces

Marks, Laurence D.

325

Strain Effects on the Surface Chemistry of La[subscript 0.7]Sr[subscript 0.3]MnO[subscript 3  

E-Print Network (OSTI)

We report on the mechanistic effects of epitaxial strain on the surface chemistry, in particular the segregation of Sr cations on La0.7Sr0.3MnO3 (LSM) model dense thin films. Our results show that the LSM film surfaces are ...

Han, Jeong Woo

326

A series of layered intergrowth phases grown by molecular beam epitaxy: Sr{sub m}TiO{sub 2+m}(m=1-5)  

SciTech Connect

Sr{sub m}TiO{sub 2+m} phases having one TiO{sub 2} layer sandwiched between m SrO layers were grown using molecular beam epitaxy. The out-of-plane (in-plane) lattice parameters determined by x-ray diffraction were c(a)=9.14 A (3.78 A), 23.55 A (3.75 A), and 14.60 A (3.75 A) for Sr{sub 3}TiO{sub 5}, Sr{sub 4}TiO{sub 6}, and Sr{sub 5}TiO{sub 7}, respectively. Both lattice parameters change abruptly on going from the m=2 Ruddlesden-Popper phase to m=3 phase, indicating a significant change in the bond lengths (or strain states) on transitioning from the known members to the higher order members of this structural family. Electron microscopy confirmed the artificially layered structures.

Fisher, P.; Wang, S.; Skowronski, M.; Salvador, P. A.; Snyder, M.; Maksimov, O. [Department of Materials Science and Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213 (United States); Electro-Optics Center, Pennsylvania State University, Freeport, Pennsylvania 16229 (United States)

2007-12-17T23:59:59.000Z

327

Direct real space observation of magneto-electronic inhomogeneity in ultra-thin film La{sub 0.5}Sr{sub 0.5}CoO{sub 3??} on SrTiO{sub 3}(001)  

SciTech Connect

Recent magnetotransport and neutron scattering measurements implicate interfacial magneto-electronic phase separation as the origin of the degradation in transport and magnetism in ultra-thin film La{sub 1?x}Sr{sub x}CoO{sub 3} on SrTiO{sub 3}(001). Here, using low temperature scanning tunneling microscopy and spectroscopy the first direct, real space observation of this nanoscopic electronic inhomogeneity is provided. Films of thickness 12.4?nm (32 unit cells) are found to exhibit spatially uniform conductance, in stark contrast to 4.7?nm (12 unit cell) films that display rich variations in conductance, and thus local density of states. The electronic heterogeneity occurs across a hierarchy of length scales (550?nm), with complex correlations with both topography and applied magnetic fields. These results thus provide a direct observation of magneto-electronic inhomogeneity in SrTiO{sub 3}(001)/La{sub 0.5}Sr{sub 0.5}CoO{sub 3} at thicknesses below 67?nm, in good agreement with less direct techniques.

Kelly, S.; Galli, F.; Aarts, J., E-mail: leighton@umn.edu, E-mail: aarts@physics.leidenuniv.nl [Department of Physics, Leiden University, 2300 RA Leiden (Netherlands); Bose, Shameek; Sharma, M.; Leighton, C., E-mail: leighton@umn.edu, E-mail: aarts@physics.leidenuniv.nl [Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455 (United States)

2014-09-15T23:59:59.000Z

328

Time Resolved in Situ XAFS Study of the Electrochemical Oxygen Intercalation in SrFeO2.5 Brownmillerite Structure: Comparison with the Homologous SrCoO2.5 System  

E-Print Network (OSTI)

as electrodes in solid oxide fuel cells (SOFCs) or batteries,1-12 sensors,13-16 magnetic recording,17 membranes fuel cells. In this regard, SrMO2.5 (M ) Fe,Co) systems with a Brownmillerite-type structure are able and batteries, a huge scientific work was performed in the past decade in order to understand the problems

Frenkel, Anatoly

329

Comparison of the Ca+HF(DF) and Sr+HF(DF) reaction dynamics Rong Zhang, David J. Rakestraw,a) Kenneth G. McKendrick,b) and Richard N. Zare  

E-Print Network (OSTI)

Comparison of the Ca+HF(DF) and Sr+HF(DF) reaction dynamics Rong Zhang, David J. Rakestraw family, Ca and Sr with rovibrationally selected HF or DF, has been carried out under single-collision conditions. A thermal beam of the alkaline earth atoms, Ca or Sr, is fired into a low-pressure gas of HF

Zare, Richard N.

330

Synthesis of carbon nanocoil forests on BaSrTiO3 substrates with the aid of a Sn catalyst  

E-Print Network (OSTI)

Synthesis of carbon nanocoil forests on BaSrTiO3 substrates with the aid of a Sn catalyst Jingyu route for the Sn-assisted synthesis of carbon nanocoils (CNCs) by chemical vapor deposition of acetylene catalyst for CNC synthesis in conjunction with either perov- skite oxides (BST) or transition metals (Fe

Castell, Martin

331

Temporal Metaphors in Discourse S.R. Glasbey, J.A. Barnden, M.G. Lee, A.M. Wallington  

E-Print Network (OSTI)

1 Temporal Metaphors in Discourse S.R. Glasbey, J.A. Barnden, M.G. Lee, A.M. Wallington School.Barnden,M.G.Lee,A.M.Wallington}@cs.bham.ac.uk Tel: +44 121 414 8560 Fax: +44 121 414 4281 Abstract

Glasbey, Sheila

332

Overall photocatalytic water splitting with NiOxSrTiO3 a revised Troy K. Townsend,a  

E-Print Network (OSTI)

catalysts assumes water oxidation to occur at the early transition metal oxide and water reduction at NiOx­La : KTaO3, and many layered perovskites. Introduction Splitting water into hydrogen and oxygen gas usingOverall photocatalytic water splitting with NiOx­SrTiO3 ­ a revised mechanism Troy K. Townsend

Osterloh, Frank

333

Monodisperse porous polymer particles containing macrocyclic ether as a new class of sorbent for SR(II) separation  

SciTech Connect

Strontium{sup 90} is one of the typical fission products that may be found in high level liquid waste (HLLW). Separation of Sr{sup 90} prior to the vitrification is beneficial to the final treatment of solid radioactive waste. In this study, a new class of sorbent for Sr(II) was developed by loading the macrocyclic ether DtBuCH18C6 into the monodisperse porous polymer particles (MPPPs). The MPPPs are well-known as a promising chromatographic material due to the uniform particle size, porous morphology, good compatibility with organic extractants, and rigid matrix. The structure and micro-morphology of the sorbent particles were characterized. The adsorption behavior towards Sr(II) in HNO{sub 3} media was investigated by both batch and column experiments. High adsorption efficiency and selective separation of Sr(II) was obtained. The sorbent particles can be recycled for at least several times before obvious lose of the adsorption ability. This kind of sorbent possesses the potential to be used for strontium separation in radioactive liquid waste.

Leng, Yuxiao; Bai, Feifei [Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084 (China); Faculty of Chemical Science and Engineering, China University of Petroleum, Beijing 100084 (China); Ye, Gang; Wei, Jichao; Wang, Jianchen; Chen, Jing [Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084 (China)

2013-07-01T23:59:59.000Z

334

Pipeline Morphing and Virtual Pipelines W. Luk, N. Shirazi, S.R. Guo and P.Y.K. Cheung  

E-Print Network (OSTI)

Pipeline Morphing and Virtual Pipelines W. Luk, N. Shirazi, S.R. Guo and P.Y.K. Cheung Department of Computing, Imperial College, 180 Queen's Gate, London SW7 2BZ, UK Abstract. Pipeline morphing is a simple but e ective technique for re- con guring pipelined FPGA designs at run time. By overlapping com

Cheung, Peter Y. K.

335

The signal recognition particle (SRP) and the SRP receptor (SR) mediate the co-translational targeting of nascent pro-  

E-Print Network (OSTI)

articles The signal recognition particle (SRP) and the SRP receptor (SR) mediate the co-translational targeting of nascent pro- tein­ribosome complexes to the membrane translocation apparatus1. The SRP protein for SRP targeting to the mem- brane, and GTP hydrolysis is required for subsequent dissociation of the SRP

Walter, Peter

336

? + SR studies on Sr2CuO2Cl2, La2CuO4 and Nd2CuO4: 2-d magnetism, local fields and muon sitesSR studies on Sr2CuO2Cl2, La2CuO4 and Nd2CuO4: 2-d magnetism, local fields and muon sites  

Science Journals Connector (OSTI)

We compare the temperature dependence of the zero-field muon spin precession frequency observed in Sr2CuO2Cl2 and La2CuO4...below the Nel temperature with a 2-d Heisenberg model with an additional small anisotro...

L. P. Le; G. M. Luke; B. J. Sternlieb; Y. J. Uemura; J. H. Brewer

1991-02-01T23:59:59.000Z

337

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

E-Print Network (OSTI)

for publication 19 January 1999 A blue emission powder phosphor Sr2CeO4 for field emission displays was preparedV. The emission peak of this phosphor is at 470 nm and Commission International de l'Eclairage coordinates are x 0

Wang, Zhong L.

338

Collective dynamics of Josephson fluxons in Bi2Sr2CaCu2O8d intrinsic junctions  

E-Print Network (OSTI)

in naturally stacked intrinsic Josephson junctions in Bi2Sr2- CaCu2O8þd single crystals were studied Keywords: Fluxon dynamics; Intrinsic Josephson junctions; Plasma excitation modes; Superradiant state 1 to high-frequency devices such as THz local oscilla- tors and mixers. Stacked long Josephson junctions

Lee, Hu-Jong

339

Oxygen vacancy induced photoluminescence and ferromagnetism in SrTiO{sub 3} thin films by molecular beam epitaxy  

SciTech Connect

SrTiO{sub 3} thin films were epitaxially grown on (100) SrTiO{sub 3} substrates using molecular beam epitaxy. The temperature for growth of the films was optimized, which was indicated by x-ray diffraction and further confirmed by microstructural characterization. Photoluminescence spectra show that oxygen-vacancy contributes to red and blue luminescence of oxygen-deficient post-annealed films, and a red shift was observed in blue region. On the other hand, ferromagnetism in film form SrTiO{sub 3} was observed from 5 K to 400 K and could be further enhanced with decreasing oxygen plasma partial pressure in annealing processes, which might be explained by the theory involving d{sup 0} magnetism related to oxygen-vacancy. From the cooperative investigations of optical and magnetic properties, we conclude that intrinsic defects, especially oxygen-vacancy, can induce and enhance luminescence and magnetism in SrTiO{sub 3} films.

Xu, Wenfei; Yang, Jing; Bai, Wei; Tang, Kai; Zhang, Yuanyuan [Key Laboratory of Polar Materials and Devices, Ministry of Education, Department of Electronic Engineering, East China Normal University, 500 Dongchuan Rd., Shanghai 200241 (China)] [Key Laboratory of Polar Materials and Devices, Ministry of Education, Department of Electronic Engineering, East China Normal University, 500 Dongchuan Rd., Shanghai 200241 (China); Tang, Xiaodong [Key Laboratory of Polar Materials and Devices, Ministry of Education, Department of Electronic Engineering, East China Normal University, 500 Dongchuan Rd., Shanghai 200241 (China) [Key Laboratory of Polar Materials and Devices, Ministry of Education, Department of Electronic Engineering, East China Normal University, 500 Dongchuan Rd., Shanghai 200241 (China); Key Laboratory of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Rd., Shanghai 200050 (China)

2013-10-21T23:59:59.000Z

340

Complex SrRuO3?Pt and LaRuO3?Pt Catalysts for Direct Alcohol Fuel Cells  

Science Journals Connector (OSTI)

Complex SrRuO3?Pt and LaRuO3?Pt Catalysts for Direct Alcohol Fuel Cells ... While currently LaRuO3/Pt composition possesses the highest activity, optimization of perovskite structure (by doping from A and B sites) may lead even to more advanced catalysts. ...

Aidong Lan; Alexander S. Mukasyan

2008-07-02T23:59:59.000Z

Note: This page contains sample records for the topic "js rogers sr" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

INTEGRATIVE GENOME-WIDE ANALYSIS OF ALTERNATIVE PRE-MRNA SPLICING REGULATION BY THE DROSOPHILA SR PROTEIN FAMILY  

E-Print Network (OSTI)

to understanding organismal development and disease. The SR proteins are a well-conserved class of RNA-binding proteins that have an essential role in the regulation of splice site selection, and have also been implicated as key regulators during other stages...

Bradley, Todd Christopher

2013-05-31T23:59:59.000Z

342

High-energy, high-efficiency harmonic generation from a Cr:LiSrAlF6 laser system  

Science Journals Connector (OSTI)

We have developed a near-diffraction-limited Q-switched Cr:LiSrAlF6 (Cr:LiSAF) laser system capable of producing 860-nm, 400-mJ pulses at a repetition rate of 2 Hz. Our...

Zenzie, H H; Isyanova, Y

1995-01-01T23:59:59.000Z

343

First-principles insights on the magnetism of cubic SrTi1?xCoxO3??  

E-Print Network (OSTI)

We present hybrid density functional calculations suggesting that magnetism in cubic SrTi1 ? x Co x O3 ? ? (STCO) with x?=?0.25 is sensitive to the nearest neighbor arrangement of the Co and the presence of oxygen vacancies. ...

Florez Uribe, Juan Manuel

344

Videos | Department of Energy  

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

Recovery Act update from Sr. Advisor Matt Rogers -- End of Obligations The Recovery Act is "Lighting Up" the streets of Philadelphia 200,000 homes weatherized under the Recovery...

345

Diversity of hydrogen configuration and its roles in SrTiO{sub 3??}  

SciTech Connect

As a source of carrier electron, various configurations of hydrogen in SrTiO{sub 3} are searched by using first-principles calculations. The most stable form of hydrogen is found to be H{sup ?}, where doubly charged oxygen vacancy V{sub O}{sup 2+} changes into singly charged H{sub O}{sup +}. Most importantly, an additional H{sup ?} is found to be weakly trapped by H{sub O}{sup +}, which completely neutralizes carrier electrons by forming (2H){sub O}{sup 0}. These unexpected behaviors of hydrogen, which can explain reported experimental results, expand the role of the hydrogen in carrier-control technology in transition-metal oxides.

Iwazaki, Yoshiki, E-mail: y-iwazaki@jty.yuden.co.jp [Taiyo Yuden Co., Ltd., 5607-2 Nakamuroda-machi Takasaki-shi, Gunma 370-3347 (Japan); Department of Physics, The University of Tokyo, 7-3-1 Hongo Bunkyo-ku, Tokyo 113-0033 (Japan); Gohda, Yoshihiro; Tsuneyuki, Shinji [Department of Physics, The University of Tokyo, 7-3-1 Hongo Bunkyo-ku, Tokyo 113-0033 (Japan)

2014-01-01T23:59:59.000Z

346

Pressure Induced Critical Behavior of Ferromagnetic Phase Transition in Sm-Nd-Sr Manganites  

Science Journals Connector (OSTI)

We report on the hydrostatic pressure dependence of the order of ferromagnetic (FM) to paramagnetic (PM) phase transition in a (Sm0.7Nd0.3)0.52Sr0.48MnO3 single crystal. At ambient pressure, the system undergoes a first-order FM-PM phase transition at 146K. The application of pressure increases the TC, suppresses the hysteresis width, and thus makes the transition second order. We have analyzed the critical behavior associated with the second-order FM-PM transition in the presence of an external pressure (12.1kbar) and obtained the critical exponents ?=0.358, ?=1.297, and ?=4.536, which are close to those predicted for the three-dimensional Heisenberg system. Using these values of ?, ?, and TC (?176??K), one can scale the magnetization data below and above TC following a single equation of state.

P. Sarkar; S. Arumugam; P. Mandal; A. Murugeswari; R. Thiyagarajan; S. Esaki Muthu; D. Mohan Radheep; Chandryee Ganguli; K. Matsubayshi; Y. Uwatoko

2009-07-31T23:59:59.000Z

347

Performance studies of the ATLAS transition radiation tracker barrel using SR1 cosmics data  

E-Print Network (OSTI)

The ATLAS experiment at the Large Hadron Collider (LHC) is designed to measure Nature at the energy scale often associated with electroweak symmetry breaking. When it comes online in 2008, the LHC and ATLAS will work to discover, among other things, the Higgs boson and any other signatures for physics beyond the Standard Model. As part of the ATLAS Inner Detector, the Transition Radiation Tracker will be an important part of ATLASs ability to make precise measurements of particle properties. This paper summarizes work done to study and categorize the performance of the TRT, using a combination of cosmic ray test data from the SR1 facility and Monte Carlo. In general, it was found that the TRT is working well, with module-level eciencies around 90 % and module-level noise just above 2 %. Reasonably good agreement was observed with Monte Carlo, though there are some apparently pathological dierences between the two that deserve further attention.

Wall, R

348

GR without SR: A gravitational-domain description of first-order Doppler effects  

E-Print Network (OSTI)

Equivalence principles are a major part of modern relativity theory. Gravitational shifts can already be calculated within the time domain as motion shifts, and we examine the consequences of reversing this argument and describing motion shifts outside the time domain, as effects of curvature associated with relative velocity. This unusual "Doppler mass shift" approach appears to resolve some of Einstein's own criticisms of the "SR+GR" model and seems to remove some barriers to the reconciliation of classical and quantum theory. The disadvantage of this model is that constant-velocity problems no longer obey Euclidean geometry. By bypassing special relativity and the special theory's flat-space assumptions, the model also suggests an alternative non-transverse frequency-shift relationship. This difference should be testable.

Eric Baird

1998-07-30T23:59:59.000Z

349

Structural modulations in Sr14Cu24O41 and their relation to charge ordering  

Science Journals Connector (OSTI)

Structural properties of the spin chain and ladder compound Sr14Cu24O41 have been studied using high energy x-ray diffraction. Strong incommensurate modulation reflections are observed due to the lattice mismatch of the chain and ladder structure, respectively. While modulation reflections of low orders display only a weak temperature dependence, higher orders dramatically increase in intensity when cooling the sample to 10K. All observed modulation reflections are indexed within a super space group symmetry and no structural phase transition could be identified between 10K and room temperature. We argue that these modulation reflections are not caused by a fivefold periodicity of the chain lattice, as claimed by Fukuda et al., Phys. Rev. B 66, 012104 (2002), but that holes localize in the potential given by the lattice modulation, which in turn gives rise to a further deformation of the lattice.

M. v. Zimmermann; J. Geck; S. Kiele; R. Klingeler; B. Bchner

2006-03-28T23:59:59.000Z

350

Special Report: OAS-SR-10-02 | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

2 2 Special Report: OAS-SR-10-02 July 29, 2010 Resolution of Questioned, Unresolved and Potentially Unallowable Costs Incurred in Support of the YuccaMountain Project The Nuclear Waste Policy Act Amendments of 1987 designated Yucca Mountain in Southwestern Nevada as the site for a national geologic repository for high-level nuclear waste. The Department of Energy assigned management of the program to the Office of Civilian Nuclear Waste Management (OCRWM). Bechtel SAIC Company, LLC (BSC) was the management and operating contractor for OCRWM's Yucca Mountain Project from April 1, 2001, until its contract with the Department ended on March 31, 2009. In early 2009, the Department indicated that it intended to terminate the Project and is moving to shut down all activities by September 30, 2010.

351

Fabrication of Sr- and Co-doped lanthanum chromite interconnectors for SOFC  

SciTech Connect

Graphical abstract: FESEM micrographs of the fresh fracture surfaces for the La{sub 0.80}Sr{sub 0.20}Cr{sub 0.92}Co{sub 0.08}O{sub 3} sintered specimens cast from optimised suspensions with 13.5, 15 and 17.5 vol.% solids loading. Aqueous suspensions were prepared using ammonium polyacrylate (PAA) as dispersant and tetramethylammonium hydroxide (TMAH) to assure a basic pH and providing stabilization. Sintering of the green discs was performed in air at 1600 {sup o}C for 4 h. Highlights: {yields} Optimum casting slips were achieved with 3 wt.% of ammonium polyacrylate and 1 wt.% of tetramethylammonium hydroxide. -- Abstract: Many studies have been performed dealing with the processing conditions of electrodes and electrolytes in solid oxide fuel cells (SOFCs). However, the processing of the interconnector material has received less attention. Lanthanum chromite (LaCrO{sub 3}) is probably the most studied material as SOFCs interconnector. This paper deals with the rheology and casting behaviour of lanthanum chromite based materials to produce interconnectors for SOFCs. A powder with the composition La{sub 0.80}Sr{sub 0.20}Cr{sub 0.92}Co{sub 0.08}O{sub 3} was obtained by combustion synthesis. Aqueous suspensions were prepared to solids loading ranging from 8 to 17.5 vol.%, using ammonium polyacrylate (PAA) as dispersant and tetramethylammonium hydroxide (TMAH) to assure a basic pH and providing stabilization. The influence of the additives concentrations and suspension ball milling time were studied. Suspensions prepared with 24 h ball milling, with 3 wt.% and 1 wt.% of PAA and TMAH, respectively, yielded the best conditions for successful slip casting. Sintering of the green discs was performed in air at 1600 {sup o}C for 4 h leading to relatively dense materials.

Setz, L.F.G. [Departamento de Engenharia de Materiais, Universidade Federal de Sao Carlos - DEMa/UFSCar (Brazil) [Departamento de Engenharia de Materiais, Universidade Federal de Sao Carlos - DEMa/UFSCar (Brazil); Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN (Brazil); Santacruz, I. [Departamento de Quimica Inorganica, Cristalografia y Mineralogia, Universidad de Malaga, 29071 Malaga (Spain)] [Departamento de Quimica Inorganica, Cristalografia y Mineralogia, Universidad de Malaga, 29071 Malaga (Spain); Colomer, M.T., E-mail: tcolomer@icv.csic.es [Instituto de Ceramica y Vidrio, ICV (CSIC), 28049 Madrid (Spain); Mello-Castanho, S.R.H. [Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN (Brazil)] [Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN (Brazil); Moreno, R. [Instituto de Ceramica y Vidrio, ICV (CSIC), 28049 Madrid (Spain)] [Instituto de Ceramica y Vidrio, ICV (CSIC), 28049 Madrid (Spain)

2011-07-15T23:59:59.000Z

352

Adsorption and Reaction of CO and CO{sub 2} on Oxidized and Reduced SrTiO{sub 3} (100) Surfaces  

SciTech Connect

The adsorption and reaction of CO and CO{sub 2} on oxidized and reduced SrTiO{sub 3}(100) surfaces have been studied using temperature programmed desorption (TPD) and x-ray photoelectron spectroscopy (XPS). XPS results indicate that the fully oxidized and vacuum annealed SrTiO{sub 3}(100) surfaces are nearly defect-free with predominantly Ti{sup 4+} ions whereas the sputter-reduced surfaces contain substantial amounts of defects ({approx} 40% reduced Ti sites). Both CO and CO{sub 2} are found to adsorb weakly on the oxidized SrTiO{sub 3}(100) surfaces. The desorption activation energies of CO and CO{sub 2} from the oxidized SrTiO{sub 3}(100) surfaces are 38 and 32 kJmol{sup -1}, respectively, following adsorption at 110 K. On sputter-reduced surfaces, enhanced reactivity of CO and CO{sub 2} is observed due to the presence of oxygen vacancy sites, causing dissociative adsorption of these molecules. Our studies indicate that CO and CO{sub 2} molecules exhibit relatively weaker binding to SrTiO{sub 3}(100) compared with TiO{sub 2}(110) and TiO{sub 2}(100) surfaces. These differences in reactivity can be attributed primarily to the influence of the Sr cations on the electronic structure of the mixed oxide of SrTiO{sub 3}.

Azad, Samina; Engelhard, Mark H.; Wang, Li Q.

2005-05-26T23:59:59.000Z

353

2013 CHEMICAL AND BIOLOGICAL ENGINEERING CURRICULUMDUAL BS CHE/CH MAJOR (leading to BS ChE w/ 2 majors) Revised 6-25-13 CSB CH 101 (4) Spring -FRESH Fall -SOPH Spring -SOPH Fall -JR Spring -JR Fall -SR Spring -SR  

E-Print Network (OSTI)

2013 CHEMICAL AND BIOLOGICAL ENGINEERING CURRICULUMDUAL BS CHE/CH MAJOR (leading to BS ChE w/ 2 majors) Revised 6-25-13 CSB CH 101 (4) Spring - FRESH Fall - SOPH Spring - SOPH Fall - JR Spring - JR Fall - SR Spring - SR (CH 117) (CH 118) CH 101 (4) CH 102 (4) CH 231 (3) CH 223 (4) CH 461 (3) c CH

Carver, Jeffrey C.

354

Structural properties of SrO thin films grown by molecular beam epitaxy on LaAlO{sub 3} substrates  

SciTech Connect

SrO films were grown on LaAlO{sub 3} substrates by molecular beam epitaxy and characterized using reflection high-energy electron diffraction (RHEED) and x-ray diffraction (XRD). The evolution of the RHEED pattern is discussed as a function of film thickness. 500 A thick SrO films were relaxed and exhibited RHEED patterns indicative of an atomically smooth surface having uniform terrace heights. Films had the epitaxial relationship (001){sub SrO}(parallel sign)(001){sub LaAlO{sub 3}}; [010]{sub SrO}(parallel sign)[110]{sub LaAlO{sub 3}}. This 45 deg. in-plane rotation minimizes mismatch and leads to films of high crystalline quality, as verified by Kikuchi lines in the RHEED patterns and narrow rocking curves of the (002) XRD peak.

Maksimov, O.; Heydemann, V. D.; Fisher, P.; Skowronski, M.; Salvador, P. A. [Electro-Optics Center, Pennsylvania State University, Freeport, Pennsylvania 16229 (United States); Department of Materials Science and Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213 (United States)

2006-12-25T23:59:59.000Z

355

Neutron Scattering Study of Charge-Ordering in R1/3Sr2/3FeO3(R=La, Pr, Nd, Sm, and Y).  

E-Print Network (OSTI)

??The series of compounds R1/3Sr2/3FeO3 (R = La, Pr, Nd, and Sm) undergo a Verwey transition along with an antiferromagnetic ordering of Fe spins as (more)

Ma, Jie

2010-01-01T23:59:59.000Z

356

Growth behavior and field-induced diffusion of Ni clusters/particles on SrTiO3 (001) observed by UHV-TEM/STM  

Science Journals Connector (OSTI)

The fundamental and technological importance of metal clusters and particles on oxide surfaces is growing. Here, room temperature deposited Ni clusters and particles on clean SrTiO3 (001) surfaces were analyzed w...

Miyoko Tanaka

2013-09-01T23:59:59.000Z

357

Time scales of large volume silicic magma systems: Sr isotopic systematics of phenocrysts and glass from the Bishop Tuff, Long Valley, California  

Science Journals Connector (OSTI)

The initial Sr isotopic compositions of glass and mineral separates from the 0.74 Ma Bishop Tuff ashflow in eastern California were determined to investigate the time scales of magmatic processes in a large si...

John N. Christensen; Donald J. DePaolo

1993-01-01T23:59:59.000Z

358

Identification of Eu oxidation states in a doped Sr5(PO4)3F phosphor by TOF-SIMS imaging  

Science Journals Connector (OSTI)

An Eu-doped Sr5(PO4)3F phosphor with a hexagonal apatite structure was prepared by a urea assisted combustion method. There was evidence of the...

Swart, H C; Nagpure, I M; Ntwaeaborwa, O M; Fisher, G L; Terblans, J J

2012-01-01T23:59:59.000Z

359

Chemical, Electronic and Nanostructure Dynamics on Sr(Ti[subscript 1 - x]FE[subscript x])O[subscript 3] Thin-Film Surfaces at High Temperatures  

E-Print Network (OSTI)

The surface structure, chemical composition and electronic structure of Sr(Ti1-xFex)O3 under different temperatures and oxygen pressures were studied by Scanning Tunneling Microscopy / Spectroscopy (STM/S) and X-ray ...

Chen, Yan

360

137Cs(90Sr) and Pu isotopes in the Pacific Ocean sources & trends  

SciTech Connect

The main source of artificial radioactivity in the world`s oceans can be attributed to worldwide fallout from atmospheric nuclear weapons testing. Measurements of selected artificial radionuclides in the Pacific Ocean were first conducted in the 1960`s where it was observed that fallout radioactivity had penetrated the deep ocean. Extensive studies carried out during the 1973-74 GEOSECS provided the first comprehensive data on the lateral and vertical distributions of {sup 9O}Sr, {sup 137}Cs and Pu isotopes in the Pacific on a basin wide scale. Estimates of radionuclide inventories in excess of amounts predicted to be delivered by global fallout alone were attributed to close-in fallout and tropospheric inputs from early U.S. tests conducted on Bikini and Enewetak Atolls in the Equatorial Pacific. In general, levels of fallout radionuclides (including {sup 9O}Sr, {sup 137}Cs and Pu isotopes) in the surface waters of the Pacific Ocean have decreased considerably over the past 4 decades and are now much more homogeneously distributed. Resuspension and the subsequent deposition of fallout radionuclides from previously deposited debris on land has become an important source term for the surface ocean. This can be clearly seen in measurements of fallout radionuclides in mineral aerosols over the Korean Peninsula (Yellow dust events). Radionuclides may also be transported from land to sea in river runoff-these transport mechanisms are more important in the Pacific Ocean where large quantities of river water and suspended sands/fluvial sediments reach the coastal zone. Another unique source of artificial radionuclides in the Pacific Ocean is derived from the slow resolubilization and transport of radionuclides deposited in contaminated lagoon and slope sediments near U.S. and French test sites. Although there is a small but significant flux of artificial radionuclides depositing on the sea floor, > 80% of the total 239, {sup 240}Pu inventory and > 95% of the total {sup 137}Cs inventory remains in the water column. Studies conducted through the 1980`s appear to be consistent with earlier findings and indicate that radionuclide inventories in mid-northern latitudes are at least a factor of two above those expected from global fallout alone. The long term persistence of close-in and/or stratospheric fallout from nuclear weapons testing in the Marshall Islands still appears to be the only plausible explanation for this anomaly.

Hamilton, T.F., Millies-Lacrox, J.C. [Service Mixte de Securite Radologique, Mondhery (France); Hong, G.H. [Korea Ocean Research and Development Institute, Ansan (Korea)

1996-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "js rogers sr" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Kinetics of fuel particle weathering and {sup 90}Sr mobility in the Chernobyl 30-km exclusion zone  

SciTech Connect

Weathering of fuel particles and the subsequent leaching of radionuclides causes {sup 90}Sr mobility in Chernobyl soils to increase with time after disposition. Studies of {sup 90}Sr speciation in soils collected in 1995 and 1996 from the Chernobyl 30-km exclusion zone have been used to calculate rates of fuel particles dissolution under natural environmental conditions. Results show that the velocity of fuel particle dissolution is primarily dependent on the physico-chemical characteristics of the particles and partially dependent on soil acidity. Compared to other areas, the fuel particle dissolution rate is significantly lower in the contaminated areas to the west of the Chernobyl reactor where deposited particles were presumably not oxidized prior to release. The data have been used to derive mathematical models that describe the rate of radionuclide leaching from fuel particles in the exclusion zone and changes in soil-to-plant transfer as a function of particle type and soil pH.

Kashparov, V.A.; Zvarich, S.I.; Protsak, V.P.; Levchuk, S.E. [Ukrainian Inst. of Agricultural Radiology, Kiev (Ukraine); Oughton, D.H. [NLH, Aas (Norway). Lab. for Analytical Chemistry

1999-03-01T23:59:59.000Z

362

Dilute magnetism and spin-orbital percolation effects in Sr2Ir1?xRhxO4  

Science Journals Connector (OSTI)

We have used a combination of resonant magnetic x-ray scattering and x-ray absorption spectroscopy to investigate the properties of the doped spin-orbital Mott insulator Sr2Ir1?xRhxO4 (0.07?x?0.70). We show that Sr2Ir1?xRhxO4 represents a unique model system for the study of dilute magnetism in the presence of strong spin-orbit coupling, and provide evidence of a doping-induced change in magnetic structure and a suppression of magnetic order at xc?0.17. We demonstrate that Rh-doping introduces Rh3+/Ir5+ ions which effectively hole-dope this material. We propose that the magnetic phase diagram for this material can be understood in terms of a novel spin-orbital percolation picture.

J. P. Clancy; A. Lupascu; H. Gretarsson; Z. Islam; Y. F. Hu; D. Casa; C. S. Nelson; S. C. LaMarra; G. Cao; Young-June Kim

2014-02-10T23:59:59.000Z

363

Interface structure and thermal stability of epitaxial SrTiO{sub 3} thin films on Si (001)  

SciTech Connect

We have used medium energy ion scattering, temperature programmed desorption, and atomic force microscopy to study the interface composition and thermal stability of epitaxial strontium titanate thin films grown by molecular-beam epitaxy on Si (001). The composition of the interface between the film and the substrate was found to be very sensitive to the recrystallization temperature used during growth, varying from a strontium silicate phase when the recrystallization temperature is low to a Ti-rich phase for a higher recrystallization temperature. The films are stable towards annealing in vacuum up to {approx}550 deg.C, where SrO desorption begins and the initially flat film starts to roughen. Significant film disintegration occurs at 850 deg.C, and is accompanied by SiO and SrO desorption, pinhole formation, and finally titanium diffusion into the silicon bulk.

Goncharova, L. V.; Starodub, D. G.; Garfunkel, E.; Gustafsson, T.; Vaithyanathan, V.; Lettieri, J.; Schlom, D. G. [Department of Physics and Astronomy, and Laboratory for Surface Modification, Rutgers University, Piscataway, New Jersey 08854 (United States); Department of Chemistry and Chemical Biology, and Laboratory for Surface Modification, Rutgers University, Piscataway, New Jersey 08854 (United States); Department of Physics and Astronomy, and Laboratory for Surface Modification, Rutgers University, Piscataway, New Jersey 08854 (United States); Department of Material Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802 (United States)

2006-07-01T23:59:59.000Z

364

Alkaline earth lead and tin compounds Ae2Pb, Ae2Sn, Ae=Ca,Sr,Ba, as thermoelectric materials  

SciTech Connect

We present a detailed theoretical study of three alkaline earth compounds Ca2Pb, Sr2Pb and Ba2Pb, which have undergone little previous study, calculating electronic band structures and Boltzmann transport and bulk moduli using density functional theory. We also study the corresponding tin compounds Ca2 Sn, Sr2 Sn and Ba2 Sn. We find that these are all narrow band gap semiconductors with an electronic structure favorable for thermoelectric performance, with substantial thermopowers for the lead compounds at temperature ranges from 300 to 800 K. For the lead compounds, we further find very low calculated bulk moduli - roughly half of the values for the lead chalcogenides, suggestive of soft phonons and hence low lattice thermal conductivity. All these facts indicate that these materials merit experimental investigation as potential high performance thermoelectrics. We find good potential for thermoelectric performance in the environmentally friendly stannide materials, particularly at high temperature.

Parker, David S [ORNL; Singh, David J [ORNL

2013-01-01T23:59:59.000Z

365

Novel Magnetism of Ir5+(5d4) Ions in the Double Perovskite Sr2YIrO6  

Science Journals Connector (OSTI)

We synthesize and study single crystals of a new double-perovskite Sr2YIrO6. Despite two strongly unfavorable conditions for magnetic order, namely, pentavalent Ir5+(5d4) ions which are anticipated to have Jeff=0 singlet ground states in the strong spin-orbit coupling (SOC) limit and geometric frustration in a face-centered cubic structure formed by the Ir5+ ions, we observe this iridate to undergo a novel magnetic transition at temperatures below 1.3K. We provide compelling experimental and theoretical evidence that the origin of magnetism is in an unusual interplay between strong noncubic crystal fields, local exchange interactions, and intermediate-strength SOC. Sr2YIrO6 provides a rare example of the failed dominance of SOC in the iridates.

G. Cao, T.?F. Qi, L. Li, J. Terzic, S.?J. Yuan, L.?E. DeLong, G. Murthy, and R.?K. Kaul

2014-02-06T23:59:59.000Z

366

Total energy study of the microscopic structure and electronic properties of tetragonal perovskite SrTiO{sub 3}  

SciTech Connect

To study the structural and electronic properties of cubic perovskite SrTiO{sub 3} and its stress-induced tetragonal phase, we have performed total energy calculations and studied the effect of oxygen vacancies on the electronic properties of tetragonal perovskite SrTiO{sub 3}. The method used was the relativistic full-potential linearized augmented plane wave (FLAPW) method. To obtain the geometry that minimizes the total energy, we relaxed the internal atomic sites of the tetragonal cell. As a result of this procedure, we have found that the titanium atoms move toward the plane of the vacancy by 0.03 , and the apical oxygen atoms move to the same plane by approximately 0.14 . These results are discussed in comparison with experimental data.

Rubio-Ponce, A. [Departamento de Ciencias Bsicas, Universidad Autnoma Metropolitana-Azcapotzalco, Av. San Pablo 180, 02200 Mxico, D.F. (Mexico); Olgun, D. [Departamento de Fsica, Centro de Investigacin y de Estudios Avanzados del Instituto Politcnico Nacional, A.P. 14740, Mxico, D.F. (Mexico)

2014-05-15T23:59:59.000Z

367

MICROSTRUCTURE STUDY ON THE La0.7Sr0.3MnO3 AND RARE-EARTH OXIDE VERTICALLY ALIGNED NANOCOMPOSITE THIN FILMS  

E-Print Network (OSTI)

NANOCOMPOSITE THIN FILMS Approved by: Research Advisor: Haiyan Wang Director for Undergraduate Research... A&M University Research Advisor: Dr. Haiyan Wang Department of Electrical and Electrical Engineering Two-phase (La0.7Sr0.3MnO3)0.5:(CeO2)0.5 (LSMO:CeO2) heteroepitaxial nanocomposite films were grown on SrTiO3 (STO) (001) by pulsed laser...

Hazariwala, Harshad

2011-05-05T23:59:59.000Z

368

Application of LaSr2Fe2CrO9-in Solid Oxide Fuel Cell Jacob M. Haag,a  

E-Print Network (OSTI)

Application of LaSr2Fe2CrO9- in Solid Oxide Fuel Cell Anodes Jacob M. Haag,a Brian D. Madsen composition LaSr2Fe2CrO9- was tested for application as an anode material for solid oxide fuel cells. Despite 28, 2008. Ni­yttria stabilized zirconia YSZ cermets are commonly used in solid oxide fuel cell SOFC

Poeppelmeier, Kenneth R.

369

The crystal structure and magnetic properties of Ba{sub 2?x}Sr{sub x}Co{sub 2}Fe{sub 12}O{sub 22}  

SciTech Connect

We have synthesized the Ba{sub 2?x}Sr{sub x}Co{sub 2}Fe{sub 12}O{sub 22} samples (x?=?0.1, 0.2, 0.3, 0.4, 0.5) by the solid-state reaction method and investigated their crystalline and magnetic properties by X-ray diffractometer (XRD), Mssbauer spectrometer, vibrating sample magnetometer, and network analyzer. XRD patterns show that all samples are rhombohedral with space group R-3m. The lattice constants a{sub 0} and c{sub 0} decrease with Sr substitution due to smaller ion radius of Sr{sup 2+} (1.27?) than that of Ba{sup 2+} (1.43?). The Mssbauer spectroscopy measurements show that the relative area ratios of Fe ion were maintained constant regardless of the Sr concentration. However, average magnetic hyperfine field slightly increased with the Sr concentration. This observation agrees with the fact that the saturation magnetization (M{sub s}) linearly increases due to the increasing super-exchange interaction, originated from the difference in the ionic radius between Ba{sup 2+} and Sr{sup 2+}. To investigate its properties at high frequency range, all samples were sintered at 1100?C, and complex permeability and permittivity were measured by network analyzer between 100?MHz and 4?GHz. For x below 0.3, the initial permeability at 100?MHz increases, at higher values of x, its value decreases. Our study shows that magnetic properties of Sr{sup 2+} substitution for Ba{sup 2+} in Y-type hexaferrite as well as low magnetic loss less than 0.1 in 1?GHz band, indicating the potential application of Ba{sub 2?x}Sr{sub x}Co{sub 2}Fe{sub 12}O{sub 22} samples for RF and antenna devices in ultra high frequency band.

Cho, Kwang Lae; Rhee, Chan Hyuk; Kim, Chul Sung, E-mail: cskim@kookmin.ac.kr [Department of Physics, Kookmin University, Seoul 136-702 (Korea, Republic of)

2014-05-07T23:59:59.000Z

370

Two 3D networks based on sandwich-type polyoxometalate units linked by Sr-O clusters: Synthesis, structure, and magnetic property  

SciTech Connect

Two 3D hybrid sandwich-type polyoxometalates, [{l_brace}Sr(H{sub 2}O){sub 5}Sr(H{sub 2}O){sub 6}Sr{sub 0.5}(H{sub 2}O){sub 7{r_brace}2}Mn{sub 4}(H{sub 2}O){sub 2}({alpha}-PW{sub 9}O{sub 34}){sub 2}].6H{sub 2}O (1) and [{l_brace}Sr(H{sub 2}O){sub 6}[Sr(H{sub 2}O){sub 8}]{sub 2}Sr(H{sub 2}O){sub 4{r_brace}2}Mn{sub 4}(H{sub 2}O){sub 2}({alpha}{beta}{beta}{alpha}-P{sub 2}W{sub 15}O{sub 56}){sub 2}].5H{sub 2}O (2), have been obtained by the routine synthetic reactions in aqueous solution and characterized by IR, elemental analysis, thermal analysis, and X-ray single-crystal diffraction. The 3D hybrid framework of 1 and 2 are built by tetra-Mn{sup II} substituted sandwich-type polyoxotungstates modified by fourteen Sr(H{sub 2}O){sub x} (x=4-8) units acting as bridges, forming centrosymmetric sandwich structures. The magnetic property of compound 1 has been studied by measuring its magnetic susceptibility in the temperature range of 2-300 K, which indicates predominant ferromagnetic interactions between the Mn{sup II}-O-Mn{sup II} bridge unit. Additionally, the electrochemical behaviours have been detected on solid bulk modified carbon paste electrodes of compounds (CPEs) and three redox couples are detected. - Graphical abstract: Two compounds based on Keggin(a) and Wells-Dawson(b) polyoxometalates modified by 14 Sr-O clusters.

Yu Yang [Key Laboratory of Materials Physics and Chemistry, Colleges of Heilongjiang Province, Harbin Normal University, Harbin 150080 (China); Heilongjiang Beikai Professional and Technology College, Harbin 150317 (China); Zhou Baibin, E-mail: zhou_bai_bin@163.co [Key Laboratory of Materials Physics and Chemistry, Colleges of Heilongjiang Province, Harbin Normal University, Harbin 150080 (China) and Department of Applied Chemistry, Harbin Institute of Technology, Harbin 150001 (China); Yu Kai [Key Laboratory of Materials Physics and Chemistry, Colleges of Heilongjiang Province, Harbin Normal University, Harbin 150080 (China); Department of Applied Chemistry, Harbin Institute of Technology, Harbin 150001 (China); Zhang Yunan [Department of Applied Chemistry, Harbin Institute of Technology, Harbin 150001 (China)

2010-08-15T23:59:59.000Z

371

Half-metallicity and stability of the rock salt BaC and SrC (111) surfaces: A density functional study  

SciTech Connect

The electronic structure and magnetic properties of relaxed (111) surfaces of the alkaline-earth monocarbides BaC and SrC in the stable rock salt structure, are calculated on the basis of first principle density functional theory within the framework of self-consistent field plane wave pseudo-potential method, using the generalized gradient approximation for the exchange-correlation functional. The results of this study reveal that the C-terminated (111) surfaces retain the bulk half-metallic property in both BaC and SrC. The half-metallicity of the C-terminated BaC surface is found to be more robust compared to the bulk BaC due to the larger half-metallic energy gap. In contrast, the half-metallic energy gap of the C-terminated SrC surface is found to be smaller than that of the bulk. The Ba-terminated surface of BaC and the Sr-terminated surface of SrC, however, lose their bulk half-metallicity due to the formation of surface states in the majority spin band gap. The calculations also show that the atomic magnetic moments at the half-metallic C-terminated surfaces in both BaC and SrC increase considerably with respect to the corresponding bulk values, which is explained in terms of an increase in the number of unpaired 2p electrons of the carbon atom at the surface. We also discuss the stability of the surfaces via the calculated bulk formation energies. The bulk formation energies for both BaC and SrC in the rock salt structure are found to be positive, which indicate that the surfaces are not stable at normal pressure and temperature conditions, and non-equilibrium growth techniques may be required for the realization of BaC and SrC thin films.

Tabatabaeifar, A. H.; Davatolhagh, S., E-mail: davatolhagh@susc.ac.ir; Foroughpour, M. [Department of Physics, College of Sciences, Shiraz University, Shiraz 71454 (Iran, Islamic Republic of)

2013-12-07T23:59:59.000Z

372

ASSESSMENT OF 90SR AND 137CS PENETRATION INTO REINFORCED CONCRETE (EXTENT OF 'DEEPENING') UNDER NATURAL ATMOSPHERIC CONDITIONS  

SciTech Connect

When assessing the feasibility of remediation following the detonation of a radiological dispersion device or improvised nuclear device in a large city, several issues should be considered including the levels and characteristics of the radioactive contamination, the availability of resources required for decontamination, and the planned future use of the city's structures and buildings. Currently, little is known about radionuclide penetration into construction materials in an urban environment. Knowledge in this area would be useful when considering costs of a thorough decontamination of buildings, artificial structures, and roads in an affected urban environment. Pripyat, a city substantially contaminated by the Chernobyl Nuclear Power Plant accident in April 1986, may provide some answers. The main objective of this study was to assess the depth of {sup 90}Sr and {sup 137}Cs penetration into reinforced concrete structures in a highly contaminated urban environment under natural weather conditions. Thirteen reinforced concrete core samples were obtained from external surfaces of a contaminated building in Pripyat. The concrete cores were drilled to obtain sample layers of 0-5, 5-10, 10-15, 15-20, 20-30, 30-40, and 40-50 mm. Both {sup 90}Sr and {sup 137}Cs were detected in the entire 0-50 mm profile of the reinforced cores sampled. In most of the cores, over 90% of the total {sup 137}Cs inventory and 70% of the total {sup 90}Sr inventory was found in the first 0-5 mm layer of the reinforced concrete. {sup 90}Sr had penetrated markedly deeper into the reinforced concrete structures than {sup 137}Cs.

Farfan, E.; Jannik, T.

2011-10-01T23:59:59.000Z

373

December 1999 NREL/SR-520-27666 A.D. Compaan, X. Deng, and R.G. Bohn  

E-Print Network (OSTI)

and Astronomy The University of Toledo Toledo, Ohio High Efficiency Thin Film CdTe and a-Si Based Solar Cells/SR-520-27666 High Efficiency Thin Film CdTe and a-Si Based Solar Cells Annual Technical Report March 4 efficiency CdTe-based thin-film solar cells and on high efficiency a-Si-based thin-film solar cells

Deng, Xunming

374

Density functional theory study of oxygen and water adsorption on SrTiO3(001)  

E-Print Network (OSTI)

effortlessly leading to the formation of a pair of hydroxyl groups. For the titanium dioxide termina- tionDensity functional theory study of oxygen and water adsorption on SrTiO3(001) D I S S E R TAT I O N and they are computationally feasible. For the oxygen and water adsorption the binding energy is controlled by long-range sur

375

Metal oxide enhanced microfiltration for the selective removal of Co and Sr ions from nuclear laundry wastewater  

Science Journals Connector (OSTI)

Abstract The present study investigated the potential use of a hybridized adsorption/microfiltration system for the selective removal of hazardous cobalt and strontium ions from nuclear power plant laundry wastewater, which is essential for managing low-level radioactive wastes. A crystalline silicotitanate (CST) and four different iron oxides were fabricated and used as adsorbents, which had different crystal structures and adsorptive mechanisms, such as ion exchange and surface coordination. CST showed the greatest affinity for Co and Sr ions (e.g., the Freundlich isotherm constant, KF=23.5mg/g and 33.9mg/g, respectively, at pH 7) and its adsorption capacity was independent of solution pH (pH 59), whereas the iron oxides removed substantive amounts of Co ions at neutral and alkaline pH levels, but only marginal amounts of strontium. Background species (e.g., K+, Na+, Ca2+, and Mg2+) had no significant impact on the affinities of the adsorbents for Co and Sr ions. The selectivity coefficients of CST for both Co and Sr ions ranged from 3 to 130. CST and ferrihydrite adsorbents were successfully regenerated using NaCl and \\{HCl\\} solutions, respectively, and their post-regeneration adsorption capacities were unchanged without any sign of significant inactivation after multiple adsorption and regeneration cycles. The addition of adsorbents to the microfiltration system enhanced the membrane permeability (>30%), probably because the cobalt species were removed prior to precipitation at the membrane surface. Substantial and stable metal removals (>90% for both Co and Sr) were achieved during 50h of continuous system operations.

Nuwan A. Weerasekara; Kwang-Ho Choo; Sang-June Choi

2013-01-01T23:59:59.000Z

376

Vctimas y victimarios: Cmplices del discurso del poder en Una noche con el Sr. Magnus e hijos de Ricardo Monti  

E-Print Network (OSTI)

FALL 1989 37 Vctimas y victimarios: Cmplices del discurso del poder en Una noche con el Sr. Magnus e hijos de Ricardo Monti Roberto Previdi Froelich ... porque nunca podemos odiar a las personas que sabemos son capaces de hacer exactamente... a la expresin libre cuyo blanco es supuestamente el mundo creado por Magnus y por lo tanto podra simbolizar una momentaria liberacin de la expresin segn confirma Gato: "Yo digo lo que piensan" (9). Este discurso desata las zonas tabes (la...

Previdi Froelich, Roberto

1989-10-01T23:59:59.000Z

377

Conducting and insulating LaAlO{sub 3}/SrTiO{sub 3} interfaces: A comparative surface photovoltage investigation  

SciTech Connect

Surface photovoltage (SPV) spectroscopy, which is a versatile method to analyze the energetic distribution of electronic defect states at surfaces and interfaces of wide-bandgap semiconductor (hetero-)structures, is applied to comparatively investigate heterostructures made of 5-unit-cell-thick LaAlO{sub 3} films grown either on TiO{sub 2}- or on SrO-terminated SrTiO{sub 3}. As shown in a number of experimental and theoretical investigations in the past, these two interfaces exhibit dramatically different properties with the first being conducting and the second insulating. Our present SPV investigation reveals clearly distinguishable interface defect state distributions for both configurations when interpreted within the framework of a classical semiconductor band scheme. Furthermore, bare SrTiO{sub 3} crystals with TiO{sub 2} or mixed SrO/TiO{sub 2} terminations show similar SPV spectra and transients as do LaAlO{sub 3}-covered samples with the respective termination of the SrTiO{sub 3} substrate. This is in accordance with a number of recent works that stress the decisive role of SrTiO{sub 3} and the minor role of LaAlO{sub 3} with respect to the electronic interface properties.

Beyreuther, E., E-mail: elke.beyreuther@iapp.de; Thiessen, A.; Grafstrm, S.; Eng, L. M. [Institut fr Angewandte Photophysik, Technische Universitt Dresden, D-01062 Dresden (Germany); Paparo, D. [CNR-SPIN and Dipartimento di Fisica, Universit di Napoli Federico II, Compl. Univ. di Monte S. Angelo, via Cintia, I-80126 Napoli (Italy)

2013-12-28T23:59:59.000Z

378

Photo- and cathodoluminescence characteristics of blue-light-emitting epitaxial Sr{sub 2}CeO{sub 4} thin-film phosphors  

SciTech Connect

Orthorhombic epitaxial Sr{sub 2}CeO{sub 4} thin-film phosphors were grown on (100) SrTiO{sub 3} and yttria-stabilized-zirconia (YSZ) single crystal substrates with epitaxial relationships of (100) [010]{sub Sr{sub 2}}{sub CeO{sub 4}}//(100)[010]{sub SrTiO{sub 3}} and (100)[010]{sub Sr{sub 2}}{sub CeO{sub 4}}//(100)[011]{sub YSZ}, respectively. As-deposited films exhibit a broadband photoluminescence (PL) emission, peaking at about 477-481 nm with a maximum cathodoluminescence (CL) intensity at about 465 nm. Enhanced PL intensity was observed for the films deposited on (100) YSZ and SrTiO{sub 3} substrates as compared to deposits on c-plane sapphire substrates, correlating with improved intragranular crystallinity and reducing defects via epitaxy. Postannealing in air significantly enhanced both of the PL and CL intensities. Luminous efficiency of 0.14 lm/W at 1 kV and 22 {mu}A/cm{sup 2} was observed for a 2-{mu}m-thick film annealed at 1000 degree sign C in air. (c) 2000 American Institute of Physics.

Lee, Yong Eui [Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6056 (United States)] [Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6056 (United States); Norton, David P. [Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6056 (United States)] [Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6056 (United States); Budai, John D. [Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6056 (United States)] [Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6056 (United States); Rack, Philip D. [Advanced Vision Technologies, Inc., West Henrietta, New York 14586 (United States)] [Advanced Vision Technologies, Inc., West Henrietta, New York 14586 (United States); Potter, Michael D. [Advanced Vision Technologies, Inc., West Henrietta, New York 14586 (United States)] [Advanced Vision Technologies, Inc., West Henrietta, New York 14586 (United States)

2000-07-31T23:59:59.000Z

379

AGE DEPENDENCIES OF 90Sr INCORPORATION IN DENTAL TISSUES: COMPARATIVE ANALYSIS AND INTERPRETATION OF DIFFERENT KINDS OF MEASUREMENTS OBTAINED FOR RESIDENTS ON THE TECHA RIVER  

SciTech Connect

Human teeth have been considered as dosimeters for decades. Methods include the in vivo measurement of 90Sr/90Y in teeth with a tooth-beta counter (TBC), the radiochemical determination of 90Sr in whole teeth, and the measurement of dose in teeth by use of electron paramagnetic resonance (EPR). Presented in this paper are results of 2,514 TBC measurements, 334 radiochemical measurements, and 218 EPR measurements for residents living in settlements along the Techa River. All three kinds of measurements indicate a sharp peak that corresponds to the uptake of 90Sr by tooth tissue. The results can be interpreted in terms of an intake function for 90Sr only if the period of calcification of each individual tooth is considered?such detail on a tooth by tooth basis is presented in this paper. The conclusion is reached that the TBC data are the most reliable in terms of reconstruction of 90Sr intake; this is due in part to the fact that the TBC measures four teeth (all at position 1) with essentially the same time periods of mineralization and because there are a large number of TBC measurements. The main utility of EPR measurements is considered to be the validation of estimates of external dose; but for this purpose teeth with 90Sr taken up into enamel must be avoided.

Tolstykh, E I.; Shishkina, Elena A.; Degteva, M O.; Ivanov, Denis V.; Shved, Valentina A.; Bayankin, Sergey N.; Anspaugh, Lynn R.; Napier, Bruce A.; Wieser, Albrecht; Jacob, Peter

2003-10-01T23:59:59.000Z

380

Inter-staple Dithiol Crosslinking in Au25(SR)18 Nanomolecules: A Combined Mass Spectrometric and Computational Study  

SciTech Connect

A systematic study of cross-linking chemistry of the Au{sub 25}(SR){sub 18} nanomolecule by dithiols of varying chain length, HS-(CH{sub 2}){sub n}-SH where n = 2, 3, 4, 5, and 6, is presented here. Monothiolated Au{sub 25} has six [RSAuSRAuSR] staple motifs on its surface, and MALDI mass spectrometry data of the ligand exchanged clusters show that propane (C3) and butane (C4) dithiols have ideal chain lengths for interstaple cross-linking and that up to six C3 or C4 dithiols can be facilely exchanged onto the cluster surface. Propanedithiol predominately exchanges with two monothiols at a time, making cross-linking bridges, while butanedithiol can exchange with either one or two monothiols at a time. The extent of cross-linking can be controlled by the Au{sub 25}(SR){sub 18} to dithiol ratio, the reaction time of ligand exchange, or the addition of a hydrophobic tail to the dithiol. MALDI MS suggests that during ethane (C2) dithiol exchange, two ethanedithiols become connected by a disulfide bond; this result is supported by density functional theory (DFT) prediction of the optimal chain length for the intrastaple coupling. Both optical absorption spectroscopy and DFT computations show that the electronic structure of the Au{sub 25} nanomolecule retains its main features after exchange of up to eight monothiol ligands.

Dass, Amala [University of Mississippi, The; Jiang, Deen [ORNL; Jupally, Vijay [University of Mississippi, The; Kota, Rajesh [University of Mississippi, The; Mattern, Daniell [University of Mississippi, The; Tschumper, Gregory [University of Mississippi, The; Van Dornshuld, Eric [University of Mississippi, The

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "js rogers sr" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Interstaple Dithiol Cross-Linking in Au(25)(SR)(18) Nanomolecules: A Combined Mass Spectrometric and Computational Study  

SciTech Connect

A systematic study of cross-linking chemistry of the Au{sub 25}(SR){sub 18} nanomolecule by dithiols of varying chain length, HS-(CH2)n-SH where n = 2, 3, 4, 5, and 6, is presented here. Monothiolated Au{sub 25} has six [RSAuSRAuSR] staple motifs on its surface, and MALDI mass spectrometry data of the ligand exchanged clusters show that propane (C3) and butane (C4) dithiols have ideal chain lengths for interstaple cross-linking and that up to six C3 or C4 dithiols can be facilely exchanged onto the cluster surface. Propanedithiol predominately exchanges with two monothiols at a time, making cross-linking bridges, while butanedithiol can exchange with either one or two monothiols at a time. The extent of cross-linking can be controlled by the Au{sub 25}(SR){sub 18} to dithiol ratio, the reaction time of ligand exchange, or the addition of a hydrophobic tail to the dithiol. MALDI MS suggests that during ethane (C2) dithiol exchange, two ethanedithiols become connected by a disulfide bond; this result is supported by density functional theory (DFT) prediction of the optimal chain length for the intrastaple coupling. Both optical absorption spectroscopy and DFT computations show that the electronic structure of the Au{sub 25} nanomolecule retains its main features after exchange of up to eight monothiol ligands.

Jiang, Deen [ORNL; Dass, Amala [University of Mississippi, The; Tschumper, Gregory [University of Mississippi, The; Mattern, Daniell [University of Mississippi, The; Van Dornshuld, Eric [University of Mississippi, The; Kota, Rajesh [University of Mississippi, The; Jupally, Vijay [University of Mississippi, The

2011-01-01T23:59:59.000Z

382

New nickel-based material (Sr12Al14O33) for biomass tar steam reforming for syngas production  

Science Journals Connector (OSTI)

A new free oxygen material Sr12Al14O33 (Sr12A7) was developed as a Ni support for biomass tar steam reforming. Toluene was chosen as the model compound for biomass gasification tar. The steam reforming process was investigated in a fixed-bed reactor. The influence of the operating parameters (i.e. reaction temperature steam-to-carbon ratio and space time) on catalyst activity and product selectivity were studied. Ni/Sr12A7 (5?wt %) showed a higher activity compared with a similar commercial catalyst Ni/Dolomite. The influence of the steam/carbon (S/C) molar ratio on gas yields at values ranging from 1.5 to 4.0 was investigated. The results show that the H2 and CO2 yields increased whereas the CO yield decreased when the S/C ratio was increased. The influence of space-time (w cat/F toluene) was also determined. The H2 CO2 and total gas yields increased when the ratio was increased. Catalyst ageing experiments were characterized by Brunauer-Emmett-Teller (BET) X-ray diffraction (XRD) and energy dispersive X-ray spectrometer (EDX). Based on the results the kinetic model is proposed as a first-order reaction for toluene with an activation energy of 131.2?kJmol?1 as generally accepted in the literature.

Chunshan Li

2013-01-01T23:59:59.000Z

383

Role of polaron hopping in leakage current behavior of a SrTiO{sub 3} single crystal  

SciTech Connect

We studied the ionic/electronic transport and resistance degradation behavior of dielectric oxides by solving the electrochemical transport equations. Here, we took into account the non-periodical boundary conditions for the transport equations using the Chebyshev collocation algorithm. A sandwiched Ni|SrTiO{sub 3}|Ni capacitor is considered as an example under the condition of 1.0?V, 1.0??m thickness for SrTiO{sub 3} layer, and a temperature of 150?C. The applied voltage resulted in the migration of ionic defects (oxygen vacancies) from anode towards cathode. The simulated electric potential profile at steady state is in good agreement with the recent experimental observation. We introduced the possibility of polaron-hopping between Ti{sup 3+} and Ti{sup 4+} at the electrode interface. It is shown that both the oxygen vacancy transport and the polaron-hopping contribute to the resistance degradation of single crystal SrTiO{sub 3}, which is consistent with the experimental observations.

Cao, Y., E-mail: yxc238@psu.edu; Randall, C. A.; Chen, L. Q. [Department of Materials Science and Engineering, Penn State University, University Park, Pennsylvania 16802 (United States); Bhattacharya, S. [Department of Materials Science and Engineering, Indian Institute of Technology Hyderabad, YM 502205 (India); Shen, J. [Department of Mathematics, Purdue University, West Lafayette, Indiana 47907 (United States)

2013-12-14T23:59:59.000Z

384

Isotope shifts of natural Sr+ measured by laser fluorescence in a sympathetically cooled Coulomb crystal  

E-Print Network (OSTI)

We measured by laser spectroscopy the isotope shifts between naturally-occurring even-isotopes of strontium ions for both the $5s\\,\\,^2S_{1/2}\\to 5p\\,\\,^2P_{1/2}$ (violet) and the $4d\\,\\,^2D_{3/2}\\to 5p\\,\\,^2P_{1/2}$ (infrared) dipole-allowed optical transitions. Fluorescence spectra were taken by simultaneous measurements on a two-component Coulomb crystal in a linear Paul trap containing $10^3$--$10^4$ laser-cooled Sr$^+$ ions. The isotope shifts are extracted from the experimental spectra by fitting the data with the analytical solution of the optical Bloch equations describing a three-level atom in interaction with two laser beams. This technique allowed us to increase the precision with respect to previously reported data obtained by optogalvanic spectroscopy or fast atomic-beam techniques. The results for the $5s\\,\\,^2S_{1/2}\\to 5p\\,\\,^2P_{1/2}$ transition are $\

Brice Dubost; Romain Dubessy; Benjamin Szymanski; Samuel Guibal; Jean-Pierre Likforman; Luca Guidoni

2014-02-14T23:59:59.000Z

385

Two charged states of hydrogen on the SrTiO{sub 3}(001) surface  

SciTech Connect

The effects of hydrogen exposure on the electronic structure of two types of SrTiO{sub 3}(001) surfaces, oxygen-deficient (OD) and nearly-vacancy-free (NVF) surfaces, were investigated with ultraviolet photoemission spectroscopy and nuclear reaction analysis. Upon molecular hydrogen exposure to the OD surface which reveals in-gap states at 1.3 eV below the Fermi level, the in-gap state intensity was reduced to half the initial value at a hydrogen coverage of 0.9 0.7 10{sup 14} cm{sup ?2}. On the NVF surface which has no in-gap state, on the other hand, atomic-hydrogen exposure induced in-gap states, and the hydrogen saturation coverage was evaluated to be 3.1 0.8 10{sup 14} cm{sup ?2}. We argue that H is positively charged as H{sup ?0.3+} on the NVF surface by being coordinated to the O atom, whereas H is negatively charged as H{sup ?} on the OD surface by occupying the oxygen vacancy site. The stability of H{sup ?} at the oxygen vacancy site is discussed.

Takeyasu, Kotaro, E-mail: takeyasu@iis.u-tokyo.ac.jp; Fukada, Keisuke; Ogura, Shohei; Matsumoto, Masuaki; Fukutani, Katsuyuki, E-mail: fukutani@iis.u-tokyo.ac.jp [Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 1538505 (Japan)] [Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 1538505 (Japan)

2014-02-28T23:59:59.000Z

386

A study of ferromagnetic signals in SrTiO{sub 3} nanoparticles  

SciTech Connect

It has been suggested that ferromagnetism may be a universal feature of nanoparticles related to particle size. We study this claim for the case of commercially produced SrTiO{sub 3} nanoparticles purchased from Alfa-Aesar. Both loosely-packed nanoparticle samples and pellets formed using uniaxial pressure were studied. Both loose and pressed samples were annealed in either air or in vacuum of 510{sup ?6} Torr at 600, 800 and 1000C. Then x-ray diffraction and SQUID measurements were made on the resulting samples. It was found that annealed loose powder samples always had a linear diamagnetic magnetization versus field response, while their pressed pellet counterparts exhibit a ferromagnetic hysteresis component in addition to the linear diamagnetic signal. Williamson-Hall analysis reveals that the particle size in pressed pellet samples increases with annealing temperature but does not change significantly in loose powder samples. The main conclusion is that the act of pressing pellets in a die introduces a spurious ferromagnetic signal into SQUID measurements.

Kovacs, P.; Des Roches, B.; Crandles, D. A. [Dept. of Physics, Brock University, St. Catharines, ON, L2S 3A1 (Canada)

2014-03-31T23:59:59.000Z

387

Optical properties of the spin-ladder compound Sr14Cu24O41  

Science Journals Connector (OSTI)

We report the measurements of the pseudodielectric function, far-infrared reflectivity, and Raman scattering spectra in Sr14Cu24O41 single crystal. We study the lattice and the spin dynamics of the Cu2O3 spin ladders and CuO2 chains of this compound. The ellipsometric and the optical reflectivity measurements yield the gap values of 1.4, 1.86, 2.34 eV (2.5 eV) for the ladders (chains) along the c axis and 2.4 eV along the a axis. The electronic structure of the Cu2O3 ladders is analyzed using the tight-binding approach for the correlated electron systems. The correlation gap value of 1.4 eV is calculated with the transfer energy (hopping) parameters t=t0=0.26 eV, along and perpendicular to legs, txy=0.026 eV (interladder hopping) and U=2.1 eV, as a Coulomb repulsion. The optical parameters of the infrared-active phonons and plasmons are obtained by an oscillator fitting procedure of the reflectivity spectra. Raman scattering spectra are measured at different temperatures using different laser line energies. The two-magnon peak is observed at about 2880 cm-1. At temperatures below 150 K the new infrared and Raman modes appear due to the charge ordering.

Z. V. Popovi?; M. J. Konstantinovi?; V. A. Ivanov; O. P. Khuong; R. Gaji?; A. Vietkin; V. V. Moshchalkov

2000-08-15T23:59:59.000Z

388

Crystal structure and magnetic properties and Zn substitution effects on the spin-chain compound Sr{sub 3}Co{sub 2}O{sub 6}  

SciTech Connect

The effects of substituting Co on the spin-chain compound Sr{sub 3}Co{sub 2}O{sub 6} with Zn were investigated by synchrotron X-ray diffraction, magnetic susceptibility, isothermal magnetization, and specific heat measurements. To the best of our knowledge, this is the first report to describe the successful substitution of Co in Sr{sub 3}Co{sub 2}O{sub 6} with Zn. The substitution was carried out by a method involving high pressures and temperatures to obtain Sr{sub 3}CoZnO{sub 6}, which crystalized into a K{sub 4}CdCl{sub 6}-derived rhombohedral structure with a space group of R-3c, similar to the host compound. With the Zn substitution, the Ising-type magnetic anisotropy of the host compound remarkably reduced; the newly formed Sr{sub 3}CoZnO{sub 6} became magnetically isotropic with Heisenberg-type characteristics. This could probably be ascribed to the establishment of a different interaction pathway, Co{sup 4+}(S=1/2)OZn{sup 2+}(S=0)OCo{sup 4+}(S=1/2). Details of the magnetic properties of Zn substituted Sr{sub 3}Co{sub 2}O{sub 6} were reported. - Graphical abstract: Crystal structure of the spin-chain compound Sr{sub 3}CoZnO{sub 6} synthesized at 6 GPa. Zn atoms preferably occupy the trigonal prism sites rather than the octahedral sites. As a result, the compound is much magnetically isotropic. Highlights: Effects of substituting Co with Zn on spin-chain magnetism of Sr{sub 3}Co{sub 2}O{sub 6} were studied. High-pressure synthesis resulted in a solid solution of Sr{sub 3}CoZnO{sub 6}. Sr{sub 3}CoZnO{sub 6} showed more isotropic magnetism than the host Sr{sub 3}Co{sub 2}O{sub 6}.

Wang, Xia [Superconducting Properties Unit, National Institute for Materials Science, 1-1 Namiki, Tsukuba Ibaraki 305-0044 (Japan); Department of Chemistry, Graduate School of Science, Hokkaido University, Sapporo, Hokkaido 060-0810 (Japan); Guo, Yanfeng, E-mail: Yangfeng.Guo@physics.ox.ac.uk [Superconducting Properties Unit, National Institute for Materials Science, 1-1 Namiki, Tsukuba Ibaraki 305-0044 (Japan); Sun, Ying [International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science, 1-1 Namiki, Tsukuba Ibaraki 305-0044 (Japan); Tsujimoto, Yoshihiro [Materials Processing Unit, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba Ibaraki 305-0047 (Japan); Matsushita, Yoshitaka [Materials Analysis Station, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba Ibaraki 305-0047 (Japan); Yamaura, Kazunari, E-mail: yamaura.kazunari@nims.go.jp [Superconducting Properties Unit, National Institute for Materials Science, 1-1 Namiki, Tsukuba Ibaraki 305-0044 (Japan); Department of Chemistry, Graduate School of Science, Hokkaido University, Sapporo, Hokkaido 060-0810 (Japan)

2013-08-15T23:59:59.000Z

389

Bridgman Growth of Large SrI2:Eu2+ Single Crystals: A High-performance Scintillator for Radiation Detection Applications  

SciTech Connect

Single-crystal strontium iodide (SrI2) doped with relatively high levels (e.g., 3 - 6 %) of Eu2+ exhibits characteristics that make this material superior, in a number of respects, to other scintillators that are currently used for radiation detection. Specifically, SrI2:Eu2+ has a light yield that is significantly higher than LaBr3:Ce3+ -a currently employed commercial high-performance scintillator. Additionally, SrI2:Eu2+ is characterized by an energy resolution as high as 2.6% at the 137Cs gamma-ray energy of 662 keV, and there is no radioactive component in SrI2:Eu2+ - unlike LaBr3:Ce3+ that contains 138La. The Ce3+-doped LaBr3 decay time is, however, faster (30 nsec) than the 1.2 sec decay time of SrI2:Eu2+. Due to the relatively low melting point of strontium iodide (~515 oC), crystal growth can be carried out in quartz crucibles by the vertical Bridgman technique. Materials-processing and crystal-growth techniques that are specific to the Bridgman growth of europium-doped strontium iodide scintillators are described here. These techniques include the use of a porous quartz frit to physically filter the molten salt from a quartz antechamber into the Bridgman growth crucible and the use of a bent or bulb grain selector design to suppress multiple grain growth. Single crystals of SrI2:Eu2+ scintillators with good optical quality and scintillation characteristics have been grown in sizes up to 5.0 cm in diameter by applying these techniques. Other aspects of the SrI2:Eu2+ crystal-growth methods and of the still unresolved crystal-growth issues are described here.

Boatner, Lynn A [ORNL; Ramey, Joanne Oxendine [ORNL; Kolopus, James A [ORNL; Hawrami, Rastgo [Radiation Monitoring Devices, Watertown, MA; Higgins, William [Radiation Monitoring Devices, Watertown, MA; Van Loef, Edgar [Radiation Monitoring Devices, Watertown, MA; Glodo, J. [Radiation Monitoring Devices, Watertown, MA; Shah, Kanai [Radiation Monitoring Devices, Watertown, MA; Bhattacharya, P. [Fisk University, Nashville, TN; Tupitsyn, E [Fisk University, Nashville, TN; Groza, Michael [Fisk University, Nashville, TN; Burger, Arnold [Fisk University, Nashville, TN

2013-01-01T23:59:59.000Z

390

Electrical conductivity of Sr{sub 2?x}VMoO{sub 6?y} (x?=?0.0, 0.1, 0.2) double perovskites  

SciTech Connect

Electrical conductivity of Sr{sub 2-x}VMoO{sub 6-y} (x?=?0.0, 0.1, 0.2) double perovskites has been investigated in a reducing atmosphere at temperatures up to 800?C. This material has a key application in solid oxide fuel cell anodes as a mixed ion and electron conductor. A solid state synthesis technique was used to fabricate materials and crystal structure was verified through x-ray diffraction. Subsequent to conventional sintering in a reducing environment, elemental valence states were indentified through x-ray photoemission spectroscopy on the double perovskite material before and after annealing in a hydrogen environment. Samples exhibited metallic like conduction with electrical conductivities of 1250?S/cm (Sr{sub 2}VMoO{sub 6-y?}), 2530?S/cm (Sr{sub 1.8}VMoO{sub 6-y?}), and 3610?S/cm (Sr{sub 1.9}VMoO{sub 6-y?}) at 800?C in 5% H{sub 2}/95% N{sub 2}, with a substantial increase in conductivity upon cooling to room temperature. Room temperature electrical conductivity values for Sr{sub 1.9}VMoO{sub 6-y?} make it a candidate as the highest electrically conductive oxide known. Highly insulating secondary surface phases, Sr{sub 3}V{sub 2}O{sub 8}, and SrMoO{sub 4}, begin to reduce at 400?C in a hydrogen environment, as confirmed by X-ray photoemission and thermal gravimetric analysis. This reduction, from V{sup 5+} and Mo{sup 6+} to lower valence states, leads to a large increase in sample electrical conductivity.

Childs, Nicholas B.; Smith, Richard; Key, Camas [Department of Physics, EPS 264, Montana State University, Bozeman, Montana 59717 (United States); Weisenstein, Adam; Sofie, Stephen [Department of Mechanical Engineering, Roberts 220, Montana State University, Bozeman, Montana 59717 (United States)

2013-06-28T23:59:59.000Z

391

(Sr,Ba)(Si,Ge){sub 2} for thin-film solar-cell applications: First-principles study  

SciTech Connect

In order to meet the increasing demand for electric power generation from solar energy conversion, the development of efficient light absorber materials has been awaited. To this end, the electronic and optical properties of advanced alkaline-earth-metals disilicides and digermanides (SrSi{sub 2}, BaSi{sub 2}, SrGe{sub 2}, and BaGe{sub 2}) are studied by means of the density functional theory using HSE06 exchange-correlation energy functional. Our calculations show that all these orthorhombic structured compounds have fundamental indirect band gaps in the range E{sub g} ? 0.891.25 eV, which is suitable for solar cell applications. The estimated lattice parameters and band gaps are in good agreement with experiments. Our calculations show that the electronic band structures of all four compounds are very similar except in the vicinity of the ?-point. The valence band of these compounds is made up by Si(Ge)-p states, whereas the conduction band is composed of Sr(Ba)-d states. Their band alignments are carefully determined by estimating the work function of each compound using slab model. The optical properties are discussed in terms of the complex dielectric function ?(?)?=??{sub 1}(?)?+?i?{sub 2}(?). The static and high-frequency dielectric constants are calculated, taking into account the ionic contribution. The absorption coefficient ?(?) demonstrates that a low energy dispersion of the conduction band, which results in a flat conduction band minimum, leads to large optical activity in these compounds. Therefore, alkaline-earth-metals disilicides and digermanides possess great potential as light absorbers for applications in thin-film solar cell technologies.

Kumar, Mukesh, E-mail: Kumar.Mukesh@nims.go.jp, E-mail: mkgarg79@gmail.com [Environmental Remediation Materials Unit, National Institute for Materials Science, Ibaraki 305-0044 (Japan); Umezawa, Naoto [Environmental Remediation Materials Unit, National Institute for Materials Science, Ibaraki 305-0044 (Japan); PRESTO, Japan Science and Technology Agency (JST), 4-1-8 Honcho Kawaguchi, Saitama 332-0012 (Japan); TU-NIMS Joint Research Center, School of Materials Science and Engineering, Tianjin University, 92 Weijin Road, Nankai District, Tianjin (China); Imai, Motoharu [Superconducting Properties Unit, National Institute for Materials Science, Ibaraki 305-0047 (Japan)

2014-05-28T23:59:59.000Z

392

Excess conductivity in 2:2:1:2-phase Bi-Sr-Ca-Cu-O epitaxial thin films  

Science Journals Connector (OSTI)

Measurements of the excess conductivity above the transition temperature on selected, high-quality, superconducting epitaxial films of the 2:2:1:2-phase Bi-Sr-Ca-Cu-O (BSCCO), obtained by liquid-phase epitaxy, are reported. The data confirm the two-dimensional nature of the thermodynamical fluctuations in BSCCO compounds in a wide range of temperature above Tc and very good agreement is found with an extended version of the Aslamazov-Larkin theory [L. Reggiani, R. Vaglio, and A. A. Varlamov, Phys. Rev. B 44, 9541 (1991)].

G. Balestrino; M. Marinelli; E. Milani; Lucia Reggiani; R. Vaglio; A. A. Varlamov

1992-12-01T23:59:59.000Z

393

Simple band model for La sub 1-x Sr sub x CoO sub 3 : Evidence from electron spectroscopy  

SciTech Connect

Valence band photoelectron spectra and high resolution electron energy loss spectra for La{sub 1-x}Sr{sub x}CoO{sub 3} (x {le} 0.5) have been measured. The general appearance and variation with photon energy of the former may be interpreted in terms of the density of states arising from a simple semiempirical tight binding band structure calculation, for reasonable values of Hamiltonian matrix elements. The latter show a highly damped loss feature below 1 eV which may be assigned to a plasma oscillation whose frequency is overestimated by the same calculations, indicating a considerable enhancement of effective mass through correlation.

Kemp, J.P.; Beal, D.J.; Cox, P.A. (Inorganic Chemistry Laboratory, Oxford (England))

1990-05-01T23:59:59.000Z

394

Modulation of conductance and superconductivity by top-gating in LaAlO{sub 3}/SrTiO{sub 3} 2-dimensional electron systems  

SciTech Connect

We report the electrical top-gating of a 2-dimensional electron gas (2DEG) formed at the LaAlO{sub 3}/SrTiO{sub 3} interface, using electron-beam evaporated Au gate electrodes. In these structures, epitaxial LaAlO{sub 3} films grown by pulsed laser deposition induce the 2DEGs at the interface to the SrTiO{sub 3} substrate and simultaneously act as the gate dielectric. The structured top-gates enable a local tuning and complete on/off switching of the interface (super-)conductivity, while maintaining the usual, intrinsic characteristics for these LaAlO{sub 3}/SrTiO{sub 3} interfaces when no gate voltage is applied.

Eerkes, P. D.; Wiel, W. G. van der; Hilgenkamp, H. [MESA Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE Enschede (Netherlands)] [MESA Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE Enschede (Netherlands)

2013-11-11T23:59:59.000Z

395

Hysteretic electrical transport in BaTiO{sub 3}/Ba{sub 1?x}Sr{sub x}TiO{sub 3}/Ge heterostructures  

SciTech Connect

We present electrical transport measurements of heterostructures comprised of BaTiO{sub 3} and Ba{sub 1?x}Sr{sub x}TiO{sub 3} epitaxially grown on Ge. Sr alloying imparts compressive strain to the BaTiO{sub 3}, which enables the thermal expansion mismatch between BaTiO{sub 3} and Ge to be overcome to achieve c-axis oriented growth. The conduction bands of BaTiO{sub 3} and Ba{sub 1?x}Sr{sub x}TiO{sub 3} are nearly aligned with the conduction band of Ge, which facilitates electron transport. Electrical transport measurements through the dielectric stack exhibit rectifying behavior and hysteresis, where the latter is consistent with ferroelectric switching.

Ngai, J. H.; Kumah, D. P.; Walker, F. J. [Department of Applied Physics and Center for Research on Interface Structures and Phenomena, Yale University, 15 Prospect Street, New Haven, Connecticut 06520-8284 (United States); Ahn, C. H. [Department of Applied Physics and Center for Research on Interface Structures and Phenomena, Yale University, 15 Prospect Street, New Haven, Connecticut 06520-8284 (United States); Department of Mechanical Engineering and Materials Science, Yale University, 10 Hillhouse Avenue, New Haven, Connecticut 06520-8267 (United States)

2014-02-10T23:59:59.000Z

396

Modulation of over 10{sup 14}?cm{sup ?2} electrons in SrTiO{sub 3}/GdTiO{sub 3} heterostructures  

SciTech Connect

We demonstrate charge modulation of over 10{sup 14}?cm{sup ?2} electrons in a two-dimensional electron gas formed in SrTiO{sub 3}/GdTiO{sub 3} inverted heterostructure field-effect transistors. Increased charge modulation was achieved by reducing the effect of interfacial region capacitances through thick SrTiO{sub 3} cap layers. Transport and device characteristics of the heterostructure field-effect transistors were found to match a long channel field effect transistor model. SrTiO{sub 3} impurity doped metalsemiconductor field effect transistors were also demonstrated with excellent pinch-off and current density exceeding prior reports. The work reported here provides a path towards oxide-based electronics with extreme charge modulation exceeding 10{sup 14}?cm{sup ?2}.

Boucherit, M.; Shoron, O.; Polchinski, C. [Department of Electrical and Computer Engineering, The Ohio State University, Columbus, Ohio 43210 (United States); Jackson, C. A.; Cain, T. A.; Buffon, M. L. C.; Stemmer, S. [Materials Department, University of California, Santa Barbara, California 93106-5050 (United States); Rajan, S. [Department of Electrical and Computer Engineering, The Ohio State University, Columbus, Ohio 43210 (United States); Department of Materials Science and Engineering, The Ohio State University, Columbus, Ohio 43210 (United States)

2014-05-05T23:59:59.000Z

397

Quantum oscillations and subband properties of the two-dimensional electron gas at the LaAlO{sub 3}/SrTiO{sub 3} interface  

SciTech Connect

We have performed high field magnetotransport measurements to investigate the interface electron gas in a high mobility SrTiO{sub 3}/SrCuO{sub 2}/LaAlO{sub 3}/SrTiO{sub 3} heterostructure. Shubnikov-de Haas oscillations reveal several 2D conduction subbands with carrier effective masses of 0.9m{sub e} and 2m{sub e}, quantum mobilities of order 2000 cm{sup 2}/Vs, and band edges only a few millielectronvolts below the Fermi energy. Measurements in tilted magnetic fields confirm the 2D character of the electron gas, and show evidence of inter-subband scattering.

McCollam, A., E-mail: A.McCollam@science.ru.nl; Guduru, V. K.; Zeitler, U.; Maan, J. C. [High Field Magnet Laboratory and Institute for Molecules and Materials, Radboud University Nijmegen, 6525 ED Nijmegen (Netherlands); Wenderich, S.; Kruize, M. K.; Molegraaf, H. J. A.; Huijben, M.; Koster, G.; Blank, D. H. A.; Rijnders, G.; Brinkman, A.; Hilgenkamp, H. [Faculty of Science and Technology and MESA Institute for Nanotechnology, University of Twente, 7500 AE Enschede (Netherlands)

2014-02-01T23:59:59.000Z

398

Thiolate ligands as a double-edged sword for CO oxidation on CeO2-supported Au25(SR)18 nanoclusters  

SciTech Connect

The effect of thiolate ligands was explored on the catalysis of CeO2-rod supported Au25(SR)18 (SR = -SCH2-CH2-Ph) by using CO oxidation as a probe reaction. Reaction kinetic tests, in situ IR and X-ray absorption spectroscopy, and density functional theory (DFT) were employed to understand how the thiolate ligands affect the nature of active sites, activation of CO and O2, as well as the reaction mechanism and kinetics. The intact Au25(SR)18 on CeO2-rod is found not able to adsorb CO. Only when the thiolate ligands are partially removed, starting from the interface between Au25(SR)18 and CeO2 at temperatures of 423 K and above, can the adsorption of CO be observed by IR. DFT calculations suggest that CO adsorbs favorably on the exposed gold atoms. Accordingly, the CO oxidation light-off temperature shifts to lower temperature. Several types of Au sites are probed by IR of CO adsorption during the ligand removal process. The cationic Au sites (charged between 0 and +1) are found to play the major role for low temperature CO oxidation. Similar activation energy and reaction rate are found for CO oxidation on differently treated Au25(SR)18/CeO2-rod, suggesting a simple site-blocking effect of the thiolate ligands in Au nanoclusters catalysis. Isotopic labelling experiments clearly indicate that CO oxidation on Au25(SR)18/CeO2-rod proceeds predominantly via the redox mechanism where CeO2 activates O2 while CO is activated on the de-thiolated gold sites. These results points to a double-edged sword role played by the thiolate ligands on Au25 nanoclusters for CO oxidation.

Wu, Zili [ORNL; Jiang, Deen [ORNL; Mann, Amanda K [ORNL; Mullins, David R [ORNL; Qiao, Zhen-an [University of Tennessee, Knoxville (UTK); Allard Jr, Lawrence Frederick [ORNL; Zeng, Chenjie [Carnegie Mellon University (CMU); Jin, Rongchao [Carnegie Mellon University (CMU); Overbury, Steven {Steve} H [ORNL

2014-01-01T23:59:59.000Z

399

Obtaining Mixed Ionic/Electronic Conductivity in Perovskite Oxides in a Reducing Environment: A Computational Prediction for Doped SrTiO3  

SciTech Connect

The electronic conductivity and thermodynamic stability of mixed p- and n-doped SrTiO3 perovskites have been investigated under anodic solid oxide fuel cell conditions using density functional theory (DFT). In particular, constrained ab initio thermodynamic calculations have been performed to evaluate the phase stability of various Ga- and La-doped SrTiO3 at synthesized and anodic SOFC conditions. The density of states (DOS) of these materials was analyzed to determine the number of charge carriers and the degree of electronic conductivity. We find that a mixed ionic/electronic conductor can be obtained when doping SrTiO3 perovskite oxide with both p-type and n-type dopants. Calculations show that 10% Ga- and 20% La-doped SrTiO3 exhibit mixed ionic/electronic conductivity at high temperature and low oxygen partial pressure whereas doping with higher concentrations of Ga, e.g., 20%, diminishes the electronic conductivity of the material. Furthermore, changing the n-dopant from La (A-site) to Nb (B-site) does not significantly affect the reducibility and number of charge carriers in p- and n-doped SrTiO3. However, a higher degree of oxygen vacancy clustering is observed for the La-doped material which reduces the oxygen ion diffusion rate and traps electrons. Nevertheless, our findings suggest that independent of doping site, mixed ionic/ electronic conductivity can be obtained in SrTiO3 perovskite oxides under reducing conditions and high temperatures when using a mixed p- and n-type doping strategy that uses a p-dopant concentration smaller than the n-dopant concentration.

Suthirakun, Suwit; Ammal, Salai Cheettu; Xiao, Guoliang; Chen, Fanglin; Huang, Kevin; zur Loye, Hans-Conrad; Heyden, Andreas

2012-11-30T23:59:59.000Z

400

Site occupancy and cation binding states in reduced polycrystalline Sr{sub x}Ba{sub 1?x}Nb{sub 2}O{sub 6}  

SciTech Connect

Site occupancy and cation binding states in the proposed thermoelectric n-type oxide Sr{sub x}Ba{sub 1?x}Nb{sub 2}O{sub 6} (SBN100x) were investigated using X-ray photoelectron spectroscopy (XPS). Sr 3d XPS spectra from unreduced polycrystalline SBN100x with various compositions contained two distinct spin-orbit doublets corresponding to Sr occupying either A1 or A2 positions in the SBN lattice; the higher binding energy state was associated with Sr ions at A2 sites, presumably due to their increased coordination over Sr at A1 sites. To gain insight into optimizing the thermoelectric properties of reduced SBN, sintered SBN50 specimens were reduced in Ar/H{sub 2} or N{sub 2}/H{sub 2} ambient. A decrease in the average Nb valence was observed in Nb 3d photoemission through the growth of low-binding energy components after reduction in either environment; evidence of surface NbN formation was apparent with longer reducing times in N{sub 2}/H{sub 2}. Both the single-component Ba 3d emission and the A2 component of the Sr 3d spectra show shifting to lower binding energy as the reduction time is increased, supporting the hypothesis of preferential oxygen vacancy formation adjacent to A2 sites. X-ray diffraction patterns revealed the formation of NbO{sub 2} in both reducing environments; in the case of extended reduction in N{sub 2}/H{sub 2}, NbO{sub 2} is gradually converted to NbN phases. Given the known properties of metallic NbN and semiconducting NbO{sub 2}, the findings obtained here may be used to maximize the thermoelectric performance of SBN via the fabrication of composite structures containing both NbO{sub 2} and NbN.

Dandeneau, Christopher S., E-mail: dandec@u.washington.edu; Yang, YiHsun; Ohuchi, Fumio S. [Department of Materials Science and Engineering, University of Washington, Seattle, Washington 98195 (United States)] [Department of Materials Science and Engineering, University of Washington, Seattle, Washington 98195 (United States); Krueger, Benjamin W.; Olmstead, Marjorie A. [Department of Physics, University of Washington, Seattle, Washington 98195 (United States)] [Department of Physics, University of Washington, Seattle, Washington 98195 (United States); Bordia, Rajendra K. [Department of Materials Science and Engineering, Clemson University, Clemson, South Carolina 29634 (United States)] [Department of Materials Science and Engineering, Clemson University, Clemson, South Carolina 29634 (United States)

2014-03-10T23:59:59.000Z

Note: This page contains sample records for the topic "js rogers sr" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Epitaxial strain effect on the Jeff = 1/2 moment orientation in Sr2IrO4 thin films  

Science Journals Connector (OSTI)

We have grown Sr2IrO4 (SIO) epitaxial thin films on SrTiO3 (STO) and NdGaO3 (NGO) substrates by a pulsed laser deposition method and characterized their structures and magnetic properties. We find that SIO films grown on STO substrates display tetragonal structure with a tensile strain of 0.13%, while SIO films grown on NGO substrates exhibit slightly orthorhombic structure with anisotropic biaxial tensile strains of 0.39% and 0.51% along the in-plane crystallographic axes. Although both films display insulating properties as bulk SIO does, their magnetic properties are distinct from that of bulk SIO. The ferromagnetic (FM) component of the Jeff=1/2 canted antiferromagnetic order, which emerges below ?240 K in bulk SIO, is significantly weakened in both films, with a greater weakening appearing in the SIO/NGO film. From structural and magnetoresistance anisotropy analyses for both films, we reveal that the weak FM component in SIO films is dependent on the epitaxial strain. The greater tensile strain leads to a smaller octahedral rotation: The rotation angle is ?9.7(1) for the SIO/NGO film and ?10.7(2) for the SIO/STO film. These findings indicate that the Jeff = 1/2 moment orientation in SIO follows the IrO6 octahedral rotation due to strong spin-orbit interaction.

Ludi Miao; Hong Xu; Z. Q. Mao

2014-01-08T23:59:59.000Z

402

Structural and magnetic properties of Y0.33Sr0.67CoO2.79  

Science Journals Connector (OSTI)

The perovskite-based oxide Y0.33Sr0.67CoO2.79 has been magnetically and structurally characterized. The material shows a unit cell of 224 simple perovskite cubes with space group I4/mmm. This is a different structure to that observed in the much-studied (La,Sr)CoO3 oxides. Oxygen stoichiometry is established through thermogravimetric analysis and correlated with ac and dc magnetic measurements and magnetic neutron diffraction. Hysteresis with field and temperature is observed in the dc magnetization measurements, yet the absence of an imaginary component in the ac susceptibility suggests a time-independent cause for these effects such as the presence of independently ordering ferromagnetic regions due to compositional inhomogeneities within the (single-phase) sample. Rietveld magnetic refinements suggest that the Co moments are arranged antiferromagnetically below 320 K, with the ferromagnetic regions existing within the long-range ordered antiferromagnetic matrix. The staggered moments are (anti)parallel with the c axis and of magnitude 2?B, a moment most typical of intermediate spin Co3+. The material does not enter a spin glass or cluster glass phase, but appears to undergo a broad spin-state transition below 100 K.

D. J. Goossens; K. F. Wilson; M. James; A. J. Studer; X. L. Wang

2004-04-06T23:59:59.000Z

403

Bi3+ Luminescence in ABiO2Cl (A = Sr, Ba) and BaBiO2Br  

SciTech Connect

Trivalent bismuth luminescence is reported in three Sillenbismuth oxyhalide phases, SrBiO2Cl, BaBiO2Cl, and BaBiO2Br. Thesecompounds exhibit Bi 6s6->6 s2 emission under UV and X-ray radiation.At room temperature, BaBiO2Cl shows the most intense light emission, withspectral and decay properties similar to those found in Bi4Ge3O12 (BGO).At low temperatures, each phase show an increase in the photoluminescenceintensities and a narrowing of the emission peaks. In contrast to thetemperature dependence of BGO, X-ray excited luminescence intensities ofall three phases remain relatively constant throughout the temperaturerange 10 - 295 K. This result indicates that the Sillen phases undergoless thermal quenching than BGO. The low temperature and room temperatureradio-luminescence decay times were determined from pulsed x-raymeasurements. At room temperature, SrBiO2Cl exhibits faster decays thanBGO, while, BaBiO2Cl and BaBiO2Br have decay times similar toBGO.

Porter-Chapman, Yetta D.; Bourret-Courchesne, Edith E.; Derenzo,Stephen E.

2007-01-18T23:59:59.000Z

404

Low Energy Spin Waves and Magnetic Interactions in SrFe{sub 2}As{sub 2}  

SciTech Connect

We report inelastic neutron scattering studies of magnetic excitations in antiferromagnetically ordered SrFe{sub 2}As{sub 2} (T{sub N}=200-220 K), the parent compound of the FeAs-based superconductors. At low temperatures (T=7 K), the magnetic spectrum S(Q,({Dirac_h}/2{pi}){omega}) consists of a Bragg peak at the elastic position (({Dirac_h}/2{pi}){omega}=0 meV), a spin gap ({delta}{<=}6.5 meV), and sharp spin-wave excitations at higher energies. Based on the observed dispersion relation, we estimate the effective magnetic exchange coupling using a Heisenberg model. On warming across T{sub N}, the low-temperature spin gap rapidly closes, with weak critical scattering and spin-spin correlations in the paramagnetic state. The antiferromagnetic order in SrFe{sub 2}As{sub 2} is therefore consistent with a first order phase transition, similar to the structural lattice distortion.

Zhao Jun; Li Shiliang [Department of Physics and Astronomy, The University of Tennessee, Knoxville, Tennessee 37996-1200 (United States); Yao Daoxin; Carlson, E. W.; Hu Jiangping [Department of Physics, Purdue University, West Lafayette, Indiana 47907 (United States); Hong Tao; Mook, H. A. [Neutron Scattering Science Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6393 (United States); Chen, Y.; Chang, S.; Ratcliff, W. II; Lynn, J. W. [NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-6102 (United States); Chen, G. F.; Luo, J. L.; Wang, N. L. [Institute of Physics, Chinese Academy of Sciences, P.O. Box 603, Beijing 100190 (China); Dai Pengcheng [Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996-1200 (United States); Neutron Scattering Science Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6393 (United States)

2008-10-17T23:59:59.000Z

405

A comprehensive review of the XRD data of the primary and secondary phases present in the BSCCO superconductor system. Part 2, Ca-Sr-Pb oxides  

SciTech Connect

X-ray powder patterns for the phases in the CaO-SrO-PbO ternary system, along with the corresponding crystal structures, were obtained from the literature and from the Powder Diffraction File (PDF). Available X-ray diffraction (XRD) patterns were compared with each other and, when possible, with a calculated pattern for each phase, yielding a recommended reference pattern. The simulated powder patterns presented here deal with the phases found within the (Ca,Sr){sub 2}PbO{sub 4} solid solution series and are recommended for the PDF.

Reardon, B.J.; Hubbard, C.R.

1992-02-01T23:59:59.000Z

406

Muon spin relaxation studies of incommensurate magnetism and superconductivity in stage-4 La2CuO4.11 and La1.88Sr0.12CuO4  

E-Print Network (OSTI)

Muon spin relaxation studies of incommensurate magnetism and superconductivity in stage-4 La2CuO4-0011, Japan Received 1 February 2002; published 16 July 2002 We report muon spin relaxation ( SR) measurements, zero-field SR measurements show muon spin precession below the Ne´el temperature TN with frequency 3

407

RbSr ages of igneous rocks from the Apollo 14 mission and the age of the Fra Mauro formation  

Science Journals Connector (OSTI)

Internal Rb-Sr isochrons were determined on four basaltic rocks and on a basaltic clast from a breccia from the Fra Mauro landing site. Rocks 14310, 14073 and 14001,7,3 yield essentially identical ages T = 3.88 0.04 AE and identical high initial 87Sr/86Sr, I = 0.70035 4. Rock 14053 and the clast from breccia 14321 both yield a higher age T = 3.95 0.04 AE and a distinctly lower I = 0.69945 4. Model ages relative to BABI for these rocks range from 4.3 to 4.6 AE. Model ages were determined for soil samples 14141, 14149, 14163, 14259 yielding TBABI of 4.4, 4.5, 4.5 and 4.7 AE respectively. An internal isochron was determined for 12004 and yielded (3.29 0.07 AE, 0.69948 5) in agreement with our previous results for basaltic rocks from the Apollo 12 site. The crystallization ages for Apollo 14 basalts are only 0.2 to 0.3 AE older than were found for mare basalts from the Sea of Tranquillity. Assuming these leucocratic igneous rocks to be representative of the Fra Mauro site, it follows that there were major igneous processes active in these regions, and presumably throughout the highlands, at times only slightly preceding the periods at which the maria were last flooded. If the breccias represent the Fra Mauro formation and if this is the result of excavation of the Imbrium Basin, we must conclude that a major bombardment of the earth-moon system continued to take place at least as late as 3.9 AE or about 0.7 AE after the formation of the solar system. Such a late major bombardment could remove the need for internal heat sources to explain some mare lava flows. Some of the lunar differentiation processes could possibly represent the result of collisional melting of a thin outer layer. This late bombardment requires that planetary objects ? 100 km in size must be stored in unstable orbits with lifetimes of 108 yr or more.

D.A. Papanastassiou; G.J. Wasserburg

1971-01-01T23:59:59.000Z

408

Photoluminescence, thermally stimulated luminescence and electron paramagnetic resonance investigations of Tb{sup 3+} doped SrBPO{sub 5}  

SciTech Connect

Graphical abstract: EPR spectra of BOHC's in 2 kGy {gamma}-irradiated SrBPO{sub 5}:Tb sample using Receiver Gain RG = 4 x 10{sup 4}, Modulation Amplitude MA = 0.25 G, Microwave power setting 6.3 mW: (A) un-annealed sample recorded at 300 K, (B) un-annealed sample recorded at 100 K and (C) sample annealed at 550 K for 10 min and recorded at 100 K. Highlights: {yields} PL studies on Tb doped SrBPO{sub 5} phosphor have shown emission due to Tb{sup 3+} associated with {sup 5}D{sub 3} {yields} {sup 7}F{sub J} and {sup 5}D{sub 4} {yields} {sup 7}F{sub J} (J = 3, 4, 5 and 6) transitions. {yields} The EPR studies on {gamma}-irradiated samples revealed formation of three types of boron oxygen hole trapped centres viz., BOHC{sub 1}, BOHC{sub 2} and BOHC{sub 3} and an electron trapped centre. {yields} The TSL peak at 475 K was associated with the thermal destruction of BOHC{sub 2}. -- Abstract: Trap level spectroscopic studies were carried out on {gamma}-irradiated Tb (1 mole%) doped SrBPO{sub 5} were carried out using photoluminescence (PL), thermally stimulated luminescence (TSL) and electron paramagnetic resonance (EPR) techniques. The incorporation of Tb in the 3+ oxidation state was ascertained from PL studies. Life time for Tb{sup 3+} emission corresponding to the intense transition {sup 5}D{sub 4} {yields} {sup 7}F{sub 5} at 543 nm was determined. The spectral characteristics of the TSL glows have shown that Tb{sup 3+} ions act as the emission center for the glow peak at 475 K. The trap parameters of the glow peak were determined. EPR investigations at room temperature/77 K revealed the stabilization of three boron oxygen hole trapped centers (BOHC's) and oxygen centered radicals such as O{sup -} and O{sub 2}{sup -} and trapped electrons in room temperature {gamma}-irradiated samples. TSL glow peak at 475 K was found to be associated with recombination of electron released from trapped electron center and the BOHC{sub 2} center.

Kumar, Mithlesh [Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085 (India)] [Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085 (India); Seshagiri, T.K., E-mail: giritks@gmail.com [Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085 (India); Kadam, R.M.; Godbole, S.V. [Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085 (India)] [Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085 (India)

2011-09-15T23:59:59.000Z

409

First Announcement of the 12th Sino-Russia Workshop of Space Weather SR-WSP12, August 25-29, 2014  

E-Print Network (OSTI)

First Announcement of the 12th Sino-Russia Workshop of Space Weather SR-WSP12, August 25-29, 2014 predictions between China and Russia, the Sino-Russian Joint Research Center was founded under the bilateral: The registration fee is 1200 RMB/person, which is payable on-site at the workshop only in cash. Website: http://sino-russia

Tian, Weidong

410

Unveiling Structure-Property Relationships in Sr2Fe1.5Mo0.5O6-, an Electrode Material for Symmetric Solid Oxide Fuel Cells  

E-Print Network (OSTI)

Solid Oxide Fuel Cells Ana B. Munoz-García, Daniel E. Bugaris, Michele Pavone,,§ Jason P. Hodges, Ashfia oxide fuel cell electrode material Sr2Fe1.5Mo0.5O6- (SFMO). Rietveld refinement of powder neutron oxide fuel cells (SOFCs) can convert a wide variety of fuels with simpler and cheaper designs than those

Carter, Emily A.

411

Electron Microscopy Study of Novel Ru Doped La0.8Sr0.2CrO3 as Anode Materials for Solid Oxide Fuel Cells (SOFCs)  

E-Print Network (OSTI)

Electron Microscopy Study of Novel Ru Doped La0.8Sr0.2CrO3 as Anode Materials for Solid Oxide Fuel of Materials Science and Engineering, Northwestern University, 2220 Campus Dr. Evanston, IL 60208 Solid Oxide Fuel Cells (SOFCs) have been the center of research activities with the goal of improving energy

Marks, Laurence D.

412

Electron tunneling characteristics on La[subscript 0.7]Sr[subscript 0.3]MnO[subscript 3] thin-film surfaces at high temperature  

E-Print Network (OSTI)

We report on the electron tunneling characteristics on La0.7Sr0.3MnO3 (LSM) thin-film surfaces up to 580?C in 10[superscript ?3]?mbar oxygen pressure, using scanning tunneling microscopy/spectroscopy (STM/STS). A thresholdlike ...

Katsiev, Khabiboulakh

413

REMOVAL OF TECHNETIUM 99 FROM THE EFFLUENT TREATMENT FACILITY (ETF) BASIN 44 USING PUROLITE A-530E & REILLEX HPQ & SYBRON IONAC SR-7 ION EXCHANGE RESINS  

SciTech Connect

This report documents the laboratory testing and analyses as directed under the test plan, RPP-20407. The overall goal of this task was to evaluate and compare candidate anion exchange resins for their capacity to remove Technetium-99 from Basin 44 Reverse Osmosis reject stream. The candidate resins evaluated were Purolite A-530E, Reillex HPQ, and Sybron IONAC SR-7.

DUNCAN JB

2004-10-29T23:59:59.000Z

414

arXiv:1208.0640v1[astro-ph.SR]3Aug2012 Contracting and Erupting Components of Sigmoidal Active  

E-Print Network (OSTI)

arXiv:1208.0640v1[astro-ph.SR]3Aug2012 Contracting and Erupting Components of Sigmoidal Active of the Atmospheric Imaging Assembly (AIA) onboard SDO, we are able to identify both the contracting and erupting components of the eruptions: the former is observed in cold AIA chan- nels as the contracting coronal loops

415

Raman spectrum and ESR of Pr0.5Ca0.4Sr0.1MnO3  

NLE Websites -- All DOE Office Websites (Extended Search)

Raman spectrum and ESR of Pr 0.5 Ca 0.4 Sr 0.1 MnO 3 H.-D. Zhou a , G. Li a , F. Liu a , S.-J. Feng a , Y. Liu a , X.-G. Li a, * , J. Fang b a Structure Research Laboratory,...

416

Fracture Testing of a Self-Healing Polymer Composite by E.N. Brown, N.R. Sottos and S.R. White  

E-Print Network (OSTI)

Fracture Testing of a Self-Healing Polymer Composite by E.N. Brown, N.R. Sottos and S.R. White with an embedded catalyst. The effects of size and concentration of the catalyst and mi- crocapsules on fracture as much as 90 percent of its virgin fracture toughness. KEY WORDS--Self-healing, autonomic healing

Sottos, Nancy R.

417

TTG magmatism in the Congo craton; a view from major and trace element geochemistry, RbSr and SmNd systematics: case  

E-Print Network (OSTI)

TTG magmatism in the Congo craton; a view from major and trace element geochemistry, Rb­Sr and Sm of the Sangmelima region (Ntem complex, Congo craton) in southern Cameroon range in modal composition from rocks. TTG intrusions in the Sangmelima region represent a major Archaean accretion event in the Congo craton

Siebel, Wolfgang

418

Water adsorption on SrTiO3(001): II. Water, water, everywhere A.E. Becerra-Toledo a,  

E-Print Network (OSTI)

Water adsorption on SrTiO3(001): II. Water, water, everywhere A.E. Becerra-Toledo a, , J January 2012 Available online 17 January 2012 Keywords: Strontium titanate Density functional theory Water adsorption Surface reconstruction X-ray photoelectron spectroscopy Oxide surfaces The role of water

Marks, Laurence D.

419

Oxygen-related dielectric relaxation and leakage characteristics of Pt,,Ba,Sr...TiO3 Pt thin-film capacitors  

E-Print Network (OSTI)

Oxygen-related dielectric relaxation and leakage characteristics of Pt?,,Ba,Sr...TiO3 ?Pt thin to the postannealing temperature in oxygen and nitrogen atmosphere. High leakage currents and low-frequency dielectric and subsequently annealed in oxygen at 350 °C. Such results are related to the mobile oxygen ions and oxygen

Cao, Wenwu

420

Role of step edges in oxygen vacancy transport into SrTiO3,,001... Department of Physics, University of California at Davis, Davis, California 95616  

E-Print Network (OSTI)

Role of step edges in oxygen vacancy transport into SrTiO3,,001... X. D. Zhua Department of Physics deficient. The excess oxygen vacancies in the monolayers are reduced by vacancy diffusion into the bulk. We successive monolayer depositions. We propose that the indiffusion of excess surface oxygen vacancies takes

Zhu, Xiangdong

Note: This page contains sample records for the topic "js rogers sr" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Effects of strain and buffer layer on interfacial magnetization in Sr2CrReO6 films determined by polarized neutron reflectometry  

Science Journals Connector (OSTI)

We have determined the depth-resolved magnetization structures of a series of highly ordered Sr2CrReO6 (SCRO) ferrimagnetic epitaxial films via combined studies of x-ray reflectometry, polarized neutron reflectometry, and superconducting quantum interference device magnetometry. The SCRO films deposited directly on (LaAlO3)0.3(Sr2AlTaO6)0.7 or SrTiO3 substrates show reduced magnetization of similar width near the interfaces with the substrates, despite having different degrees of strain. When the SCRO film is deposited on a SrCr0.5Nb0.5O3 (SCNO) double perovskite buffer layer, the width of the interfacial region with reduced magnetization is decreased. However, the relative reduction of the magnetization averaged over the interfacial regions is comparable among the three samples. Interestingly, we found that the magnetization suppression region is wider than the Cr/Re antisite disorder region at the interface between SCRO and SCNO.

Yaohua Liu; J. M. Lucy; A. Glavic; H. Ambaye; V. Lauter; F. Y. Yang; S. G. E. te Velthuis

2014-09-19T23:59:59.000Z

422

Synthesis and characterization of rare-earth doped SrBi{sub 2}Nb{sub 2}O{sub 9} phase in lithium borate based nanocrystallized glasses  

SciTech Connect

Glass composites comprising of un-doped and samarium-doped SrBi{sub 2}Nb{sub 2}O{sub 9} nanocrystallites are fabricated in the glass system 16.66SrO-16.66[(1-x)Bi{sub 2}O{sub 3}-xSm{sub 2}O{sub 3}]-16.66Nb{sub 2}O{sub 5}-50Li{sub 2}B{sub 4}O{sub 7} (0<=x<=0.5, in mol%) via the melt quenching technique. The glassy nature of the as-quenched samples is established by differential thermal analyses. Transmission electron microscopic studies reveal the presence of about 15 nm sized spherical crystallites of the fluorite-like SrBi{sub 1.9}Sm{sub 0.1}Nb{sub 2}O{sub 9} phase in the samples heat treated at 530 deg. C. The formation of layered perovskite-type un-doped and samarium-doped SrBi{sub 2}Nb{sub 2}O{sub 9} nanocrystallites with an orthorhombic structure through the intermediate fluorite phase is confirmed by X-ray powder diffraction and micro-Raman spectroscopic studies. The influence of samarium doping on the lattice parameters, lattice distortions, and the Raman peak positions of SrBi{sub 2}Nb{sub 2}O{sub 9} perovskite phase is clarified. The dielectric constants of the perovskite SrBi{sub 2}Nb{sub 2}O{sub 9} and SrBi{sub 1.9}Sm{sub 0.1}Nb{sub 2}O{sub 9} nanocrystals are relatively larger than those of the corresponding fluorite-like phase and the precursor glass. - Graphical Abstract: This figure shows the XRD patterns at room temperature for the as-quenched and heat treated samples in Sm{sub 2}O{sub 3}-doped (x=0.1) glass. Based on these results, it is concluded that the formation of samarium-doped perovskite SBN phase takes place via an intermediate fluorite-like phase in the crystallization of this glass.

Harihara Venkataraman, B. [Department of Materials Science and Technology, Nagaoka University of Technology, 1603-1 Kamitomioka-cho, Nagaoka 940-2188 (Japan); Fujiwara, Takumi [Department of Applied Physics, Graduate School of Engineering, Tohoku University, Sendai 980-8579 (Japan); Komatsu, Takayuki, E-mail: komatsu@mst.nagaokaut.ac.j [Department of Materials Science and Technology, Nagaoka University of Technology, 1603-1 Kamitomioka-cho, Nagaoka 940-2188 (Japan)

2009-06-15T23:59:59.000Z

423

Alleged Wasteful Spending Regarding International Travel for the Department of Energy's Deputy Secretary, INS-SR-13-01  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Wasteful Spending Regarding Wasteful Spending Regarding International Travel by the Department of Energy's Deputy Secretary INS-SR-13-01 January 2013 Department of Energy Washington, DC 20585 January 31, 2013 MEMORANDUM FOR THE SECRETARY FROM: Gregory H. Friedman Inspector General SUBJECT: INFORMATION: Special Inquiry on "Alleged Wasteful Spending Regarding International Travel by the Department of Energy's Deputy Secretary" BACKGROUND The Department of Energy's Deputy Secretary represents the U.S. Government, the Department and the Secretary in many high-level international and ministerial meetings. In this role, the Deputy Secretary receives executive protection while on international travel for security purposes, to reduce the risk of harm and aid mission accomplishment. During such travel, the

424

Pressure induced metallization of the perovskite Sr{sub 3}Fe{sub 2}O{sub 7}  

SciTech Connect

Electrical, magnetic and structural properties of the antiferromagnetic semiconductor Sr{sub 3}Fe{sub 2}O{sub 7} (Fe{sup 4+}, d{sup 4}) were probed by resistance, Moessbauer spectroscopy (MS) and X-ray diffraction (XRD) measurements to P {approximately} 40 GPa using diamond-anvil cells. A sluggish pressure-induced insulator-metal transition is observed with a clear incipient metallic state at P {ge} 20 GPa. The Fe(IV) 3d magnetic moments remain unaltered across the transition as deduced from MS, and XRD studies show no structural symmetry change to 40 GPa. The results are consistent with carrier delocalization due to p-p gap closure e.g., ligand-to-ligand charge transfer that does not involve the d-states and structural symmetry changes.

Rozenberg, G.K.; Machavariani, G.Y.; Pasternak, M.P.; Milner, A.P. [Tel Aviv Univ. (Israel). School of Physics and Astronomy; Hearne, G.R. [Univ. of the Witwatersrand, Johannesburg-Gauteng (South Africa). Dept. of Physics; Taylor, R.D. [Los Alamos National Lab., NM (United States); Adler, P. [Max Planck inst. fuer Festkoerperforschung, Stuttgart (Germany)

1998-12-31T23:59:59.000Z

425

Unconventional Electronic Reconstruction in Undoped (Ba,Sr)Fe2As2 Across the Spin Density Wave Transition  

SciTech Connect

Through a systematic high-resolution angle-resolved photoemission study of the iron pnictide compounds (Ba,Sr)Fe{sub 2}As{sub 2}, we show that the electronic structures of these compounds are significantly reconstructed across the spin density wave transition, which cannot be described by a simple folding scenario of conventional density wave ordering. Moreover, we find that LDA calculations with an incorporated suppressed magnetic moment of 0.5{mu}{sub B} can match well the details in the reconstructed electronic structure, suggesting that the nature of magnetism in the pnictides is more itinerant than local, while the origin of suppressed magnetic moment remains an important issue for future investigations.

Yi, M.

2010-06-02T23:59:59.000Z

426

Radiochemical procedures for analysis of Pu, Am, Cs and Sr in water, soil, sediments and biota samples  

SciTech Connect

The Environmental Radioactivity Analysis Laboratory (ERAL) was established as an analytical facility. The primary function of ERAL is to provide fast and accurate radiological data of environmental samples. Over the years, many radiochemical procedures have been developed by the staffs of ERAL. As result, we have found that our procedures exist in many different formats and in many different notebooks, documents and files. Therefore, in order to provide for more complete and orderly documentation of the radiochemical procedures that are being used by ERAL, we have decided to standardize the format and compile them into a series of reports. This first report covers procedures we have developed and are using for the radiochemical analysis of Pu, Am, Cs, and Sr in various matrices. Additional analytical procedures and/or revisions for other elements will be reported as they become available through continuation of these compilation efforts.

Wong, K.M.; Jokela, T.A.; Noshkin, V.E.

1994-02-01T23:59:59.000Z

427

The surface structure of SrTiO{sub 3} at high temperatures under influence of oxygen  

SciTech Connect

We use low energy electron microscopy to investigate the structure of the SrTiO{sub 3} (001) surface at elevated temperatures and different oxygen pressures. Upon varying the temperature between 500?C and 900?C in oxygen pressures ranging from 10{sup ?9} millibar to 10{sup ?4} millibar, two surface transitions are found to be present. The lower temperature (1 1) ? (2 1) transition that is known to occur in ultrahigh vacuum can be reversed by increasing the oxygen pressure. At higher temperatures, we observe a (2 1) ? disordered (1 1) transition which is irreversible in the experimental parameter range. The observations are expected to have a strong bearing on the growth of interface structures.

Hesselberth, M. B. S.; Molen, S. J. van der; Aarts, J. [Kamerlingh Onnes Laboratory, Leiden University, P.O. Box 9504, 2300 RA Leiden (Netherlands)

2014-02-03T23:59:59.000Z

428

Octahedral rotations in strained LaAlO{sub 3}/SrTiO{sub 3} (001) heterostructures  

SciTech Connect

Many complex oxides display an array of structural instabilities often tied to altered electronic behavior. For oxide heterostructures, several different interfacial effects can dramatically change the nature of these instabilities. Here, we investigate LaAlO{sub 3}/SrTiO{sub 3} (001) heterostructures using synchrotron x-ray scattering. We find that when cooling from high temperature, LaAlO{sub 3} transforms from the Pm3{sup }m to the Imma phase due to strain. Furthermore, the first 4 unit cells of the film adjacent to the substrate exhibit a gradient in rotation angle that can couple with polar displacements in films thinner than that necessary for 2D electron gas formation.

Fister, T. T.; Hruszkewycz, S. O.; Proffit, D. L.; Eastman, J. A.; Fuoss, P. H.; Baldo, P. M.; Fong, D. D. [Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States); Zhou, H. [X-Ray Science Division, Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439 (United States); Luo, Z. [National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029 (China); Seo, S. S. A.; Lee, H. N. [Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)

2014-02-01T23:59:59.000Z

429

Co-Doped (La,Sr)TiO3-?: A High Curie Temperature Diluted Magnetic System with Large Spin Polarization  

Science Journals Connector (OSTI)

We report on tunneling magnetoresistance (TMR) experiments that demonstrate the existence of a significant spin polarization in Co-doped (La,Sr)TiO3-? (Co-LSTO), a ferromagnetic diluted magnetic oxide system (DMOS) with high Curie temperature. These TMR experiments have been performed on magnetic tunnel junctions associating Co-LSTO and Co electrodes. Extensive structural analysis of Co-LSTO combining high-resolution transmission electron microscopy and Auger electron spectroscopy excluded the presence of Co clusters in the Co-LSTO layer and thus, the measured ferromagnetism and high spin polarization are intrinsic properties of this DMOS. Our results argue for the DMOS approach with complex oxide materials in spintronics.

G. Herranz, R. Ranchal, M. Bibes, H. Jaffrs, E. Jacquet, J.-L. Maurice, K. Bouzehouane, F. Wyczisk, E. Tafra, M. Basletic, A. Hamzic, C. Colliex, J.-P. Contour, A. Barthlmy, and A. Fert

2006-01-19T23:59:59.000Z

430

Sr lattice clock at 1x10^{-16} fractional uncertainty by remote optical evaluation with a Ca clock  

E-Print Network (OSTI)

Optical atomic clocks promise timekeeping at the highest precision and accuracy, owing to their high operating frequencies. Rigorous evaluations of these clocks require direct comparisons between them. We have realized a high-performance remote comparison of optical clocks over km-scale urban distances, a key step for development, dissemination, and application of these optical standards. Through this remote comparison and a proper design of lattice-confined neutral atoms for clock operation, we evaluate the uncertainty of a strontium (Sr) optical lattice clock at the 1x10-16 fractional level, surpassing the best current evaluations of cesium (Cs) primary standards. We also report on the observation of density-dependent effects in the spin-polarized fermionic sample and discuss the current limiting effect of blackbody radiation-induced frequency shifts.

A. D. Ludlow; T. Zelevinsky; G. K. Campbell; S. Blatt; M. M. Boyd; M. H. G. de Miranda; M. J. Martin; J. W. Thomsen; S. M. Foreman; Jun Ye; T. M. Fortier; J. E. Stalnaker; S. A. Diddams; Y. Le Coq; Z. W. Barber; N. Poli; N. D. Lemke; K. M. Beck; C. W. Oates

2008-01-28T23:59:59.000Z

431

Detection of charge transfer processes in Cr-doped SrTiO{sub 3} single crystals  

SciTech Connect

An insulator-to-metal transition is observed in Cr-doped SrTiO{sub 3} single crystals upon extended exposure to a high electric field, namely, electroconditioning (EC). Electron paramagnetic resonance (EPR) and transport measurements under laser irradiation show anticorrelation between the Cr{sup 3+} EPR signal and the electrical current. This proves that the Cr{sup 3+} ions are responsible for the photocurrent that initiates the EC process. We observe the presence of Cr{sup 3+}/Cr{sup 4+} mixed valencies in the bulk in the conducting state. The EPR characterization of the spectra in the conducting state excludes the possibility of a Cr{sup 3+}-oxygen vacancy complex in the bulk as a result of the EC.

La Mattina, F. [Physik-Institut der Universitaet Zuerich, Winterthurerstr. 190, CH-8057 Zuerich (Switzerland); IBM Research, Zurich Research Laboratory, Saeumerstr. 4, CH-8803 Rueschlikon (Switzerland); Bednorz, J. G.; Alvarado, S. F. [IBM Research, Zurich Research Laboratory, Saeumerstr. 4, CH-8803 Rueschlikon (Switzerland); Shengelaya, A. [Physics Institute of Tbilisi State University, Chavchavadze 3, GE-0128, Tbilisi (Georgia); Keller, H. [Physik-Institut der Universitaet Zuerich, Winterthurerstr. 190, CH-8057 Zuerich (Switzerland)

2008-07-14T23:59:59.000Z

432

Gap-Inhomogeneity-Induced Electronic States in Superconducting Bi2Sr2CaCu2O8+delta  

SciTech Connect

In this Letter, we analyze, using scanning tunneling spectroscopy, the density of electronic states in nearly optimally doped Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}} in zero magnetic field. Focusing on the superconducting gap, we find patches of what appear to be two different phases in a background of some average gap, one with a relatively small gap and sharp large coherence peaks and one characterized by a large gap with broad weak coherence peaks. We compare these spectra with calculations of the local density of states for a simple phenomenological model in which a 2{zeta}{sub 0} x 2{zeta}{sub 0} patch with an enhanced or suppressed d-wave gap amplitude is embedded in a region with a uniform average d-wave gap.

Fang, A.C.

2010-02-25T23:59:59.000Z

433

NMR, EPR, and bulk susceptibility measurements of one-dimensional SrNbO3.41  

Science Journals Connector (OSTI)

NMR, EPR, and bulk susceptibility measurements were performed in the perovskite-related layered compound SrNbO3.41. We determined 93Nb NMR spectra, spin-spin relaxation rates 1/T2 and spin-lattice relaxation rates 1/T1 down to 600 mK. From the spin-lattice relaxation 1/T1 we identified an activated behavior 1/T1?exp(-?NMR/kBT) with a gap ?NMR=6.5 meV for temperatures T>20 K. Below 20 K, the line width ?H(T) from acceptor-EPR and 93(1/T1)(T) both exhibit a temperature dependence propotional to exp[-(T0/T)1/2] which is indicative for a variable range hopping process. We discuss the possibility of charge-density-wave formation at low temperatures.

J.-E. Weber; C. Kegler; N. Bttgen; H.-A. Krug von Nidda; A. Loidl; F. Lichtenberg

2001-11-27T23:59:59.000Z

434

Epitaxial La0.5Sr0.5CoO3 thin films: Structure, magnetism, and transport  

SciTech Connect

La1 xSrxCoO3 has received considerable attention in bulk form. This is due to interest in the fundamental magnetic properties spin-state transitions and magnetic phase separation as well as potential applications in ferroelectric memory and solid-oxide fuel cells. The structure and properties in thin film form are not well understood, and the influence of dimensional confinement on effects such as magnetic phase separation is unknown. Here, we report a comprehensive investigation of structure, magnetism, and transport in strained epitaxial La0.5Sr0.5CoO3 001 films deposited on SrTiO3 001 substrates by reactive dc magnetron sputtering. The crystalline quality, phase purity, strain state, oxygen stoichiometry, morphology, and magnetic and electronic properties of the epilayers are all probed and are found to be particularly sensitive to the total sputtering gas pressure and the ratio of reactive to inert gas PO2 /PAr. The various structure-property relationships are discussed in detail, particularly with respect to the degree of oxygenation and oxygen-induced resputtering. The films are strained and tetragonally distorted due to the 1.9% lattice mismatch with SrTiO3. Significant strain relaxation occurs at thicknesses around 200 , resulting in a crossover from two-dimensional-like to three-dimensional growth. Polarized neutron reflectometry was combined with x-ray reflectometry to obtain chemical and magnetic depth profiles, which are compared with cross-sectional scanning transmission electron microscopy. The results indicate a thin 10 layer at the film/substrate interface with significantly different structural properties to the bulk of the film, as well as a strongly graded magnetic and chemical profile at the film surface due to the significant roughness. The Curie temperature was found to decrease very slowly as the thickness is reduced down to 50 , at which point a rapid decrease occurs, almost coincident with a sharp decrease in saturation magnetization. At this point, the temperature dependence of the resistivity shows a crossover from metallic to insulating, accompanied by dramatic changes in the magnetoresistance. The magnetoresistance has a negative contribution peaking around the Curie point similar to that seen in bulk, a second negative contribution occurring at low temperature only for the thinnest samples, as well as a large anisotropic magnetoresistance, which vanishes at the Curie point. Remarkably, the low temperature contribution in the thinnest x=0.5 films bears a striking resemblance to that seen in the insulating phase x0.17 in bulk, suggesting the formation of a nonmetallic phase at low thickness that is similar to the low doping bulk phase, i.e., magnetic phase separation near the interface with SrTiO3.

Torija, Maria [University of Minnesota; Sharma, M [University of Minnesota; Fitzsimmons, M. R. [Los Alamos National Laboratory (LANL); Varela, M [Oak Ridge National Laboratory (ORNL); Leighton, chris [University of Minnesota

2008-01-01T23:59:59.000Z

435

Synthesis, crystal structure and physico-chemical properties of the new quaternary oxide Sr{sub 5}BiNi{sub 2}O{sub 9.6}  

SciTech Connect

A new black quaternary oxide Sr{sub 5}BiNi{sub 2}O{sub 9.6} was synthesized by solid state reaction at 1200 Degree-Sign C. Its structure was solved by electron crystallography and X-ray powder refinement, yielding a tetragonal structure with space group I4/mmm, a=5.3637 (2) A, c=17.5541(5) A, Z=4. The structure can be described as a stacking of (Bi,Sr)-O rocksalt slabs and SrNiO{sub 3-{delta}} perovskite slabs. The initial nickel valence is close to +3.1. Thermogravimetry and high-temperature oxygen coulometry showed that this compound has variable oxygen content as a function of temperature and oxygen pressure, and ultimately decomposes when heated in low oxygen pressure above 800 Degree-Sign C. It is a metallic conductor with n-type conduction. Its thermoelectric power was determined and found to be -20 and -38 {mu}V/K at 300 and 650 Degree-Sign C, respectively. Magnetic measurements confirm the nickel valence close to +3 and show evidence of magnetic ordering at 20 K. - Graphical Abstract: View of the structure of new Sr{sub 5}BiNi{sub 2}O{sub 9.6} oxide. Highlights: Black-Right-Pointing-Pointer Discovery of a new, unreported phase in the Sr-Bi-Ni-O system. Black-Right-Pointing-Pointer Full crystal structure determination by electron and X-ray diffraction. Black-Right-Pointing-Pointer Oxygen stoichiometry variation determination vs. P,T. Black-Right-Pointing-Pointer Determination of electrical and magnetic properties.

Novitskaya, Mariya; Makhnach, Leonid [Department of Chemistry, Belarus State University, 14 Leningradskaya Str., 220030 Minsk (Belarus); Ivashkevich, Ludmila [Institute of Physicochemical Problems, Belarus State University, 14 Leningradskaya Str., 220030 Minsk (Belarus); Pankov, Vladimir [Department of Chemistry, Belarus State University, 14 Leningradskaya Str., 220030 Minsk (Belarus); Klein, Holger; Rageau, Amelie; David, Jeremy [Institut Neel CNRS and Universite J. Fourier, BP 166, 38042 Grenoble Cedex (France); Gemmi, Mauro [Institut Neel CNRS and Universite J. Fourier, BP 166, 38042 Grenoble Cedex (France); Center for Nanotechnology Innovation, NEST Istituto Italiano di Tecnologia, Piazza S.SIlvestro 12, 56127 Pisa (Italy); Hadermann, Joke [Electron Microscopy for Materials Research (EMAT), University of Antwerp, Groenenborgerlaan 171, B-2020, Antwerp (Belgium); Strobel, Pierre, E-mail: pierre.strobel@grenoble.cnrs.fr [Institut Neel CNRS and Universite J. Fourier, BP 166, 38042 Grenoble Cedex (France)

2011-12-15T23:59:59.000Z

436

Structure and conductivity of strontium-doped cerium orthovanadates Ce{sub 1-x}Sr{sub x}VO{sub 4} (0{<=}x{<=}0.175)  

SciTech Connect

A-site substituted cerium orthovanadates, Ce{sub 1-x}Sr{sub x}VO{sub 4}, were synthesised by solid-state reactions. It was found that the solid solution limit in Ce{sub 1-x}Sr{sub x}VO{sub 4} is at x=0.175. The crystal structure was analysed by X-ray diffraction and it exhibits a tetragonal zircon structure of space group I4{sub 1}/amd (1 4 1) with a=7.3670 (3) and c=6.4894 (1) A for Ce{sub 0.825}Sr{sub 0.175}VO{sub 4}. The UV-vis absorption spectra indicated that the compounds have band gaps at room temperature in the range 4.5-4.6 eV. Conductivity measurements were performed for the first time up to the strontium solid solution limit in air and in dry 5% H{sub 2}/Ar with conductivity values at 600 {sup o}C ranging from 0.3 to 30 mS cm{sup -1} in air to 30-45 mS cm{sup -1} in reduced atmosphere. Sample Ce{sub 0.825}Sr{sub 0.175}VO{sub 4} is redox stable at a temperature below 600 {sup o}C although the conductivity is not high enough to be used as an electrode for solid oxide fuel cells. - Graphical abstract: A-site substituted cerium orthovanadates Ce{sub 1-x}Sr{sub x}VO{sub 4} were synthesised by solid state reaction and their conductivities measured in air and dry 5% H{sub 2}/Ar up to the strontium solid solution limit.

Petit, Christophe T.G.; Lan Rong; Cowin, Peter I. [Department of Chemistry, Heriot-Watt University, Edinburgh EH14 4AS (United Kingdom); Tao, Shanwen, E-mail: S.Tao@hw.ac.u [Department of Chemistry, Heriot-Watt University, Edinburgh EH14 4AS (United Kingdom)

2010-06-15T23:59:59.000Z

437

Magneto-optic far-infrared study of Sr14Cu24O41: Triplet excitations in chains  

Science Journals Connector (OSTI)

Using far-infrared spectroscopy, we have studied the magnetic field and temperature dependence of the spin gap modes in the chains of Sr14Cu24O41. Two triplet modes T1 and T2 were found in the center of the Brillouin zone at ?1=9.65meV and ?2=10.86meV in zero magnetic field. The T1 mode was excited when the electric field vector E of the light was polarized along the b axis (perpendicular to the planes of chains and ladders) and T2 was excited for E?a (perpendicular to the chains and along the rungs). Up to the maximum magnetic field of 18T, applied along the chains, the electron g factors of these two modes were similar, g1c=2.049 and g2c=2.044. Full linewidth at half maximum for both modes was 1cm?1 (0.12meV) at 4K and increased with T. The temperature dependence of mode energies and line intensities was in agreement with the inelastic neutron scattering results from two groups [M. Matsuda et al., Phys. Rev. B 59, 1060 (1999); L. P. Regnault et al., ibid 59, 1055 (1999)]. The T1 mode has not been observed by inelastic neutron scattering in the points of the k space equivalent to the center of the Brillouin zone. Our study indicates that the zone structure model of magnetic excitations of Sr14Cu24O41 must be modified to include a triplet mode at 9.65meV in the center of the magnetic Brillouin zone.

D. Hvonen; U. Nagel; T. Rm; P. Haas; M. Dressel; J. Hwang; T. Timusk; Y.-J. Wang; J. Akimitsu

2007-10-23T23:59:59.000Z

438

Ge~~?srE~~rs~anSJla~~~l!u~?a~!L:Ya~~ld and Mariant:H. Marchand  

E-Print Network (OSTI)

Ge~~?srE~~rs~anSJla~~~l!u~?a~!L:Ya~~ld and Mariant:H. Marchand Gender in a Global/Local World c

Brody, James P.

439

Aerobic Biodegradation of 2,4-Dinitroanisole by Nocardioides sp. Strain JS1661  

Science Journals Connector (OSTI)

...DNAN as the sole source of carbon and energy. Enzyme assays indicated that the first...sole source of carbon, nitrogen, and energy were selected for further study. 16S...4-DNP (100 muM) as the sole carbon and energy source. Noninduced cells were grown in...

Tekle Tafese Fida; Shannu Palamuru; Gunjan Pandey; Jim C. Spain

2014-10-03T23:59:59.000Z

440

The Epistemic Benefit of Transient Diversity Kevin J.S. Zollman  

E-Print Network (OSTI)

or methodological approach will succeed without first attempting to apply it, study the effects of its application a problem for more traditional approaches to scientific methodology, since if everyone employs the same similar solutions (Hull, 1988; Sarkar, 1983; Solomon, 1992, 2001). Alternatively, Philip Kitcher (1990

Zollman, Kevin

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441

A Review of "The Colonial American Origins of Modern Democratic Thought" by J.S. Maloy  

E-Print Network (OSTI)

: citation of this book does occasionally appear under the title The Selected Writings of Nehemiah Wallington: The Thoughts and Considerations of a London Puritan and Wood-Turner, 1618- 1654 (2007). Nothing appears under that title on OCLC?s World...

Scheik, William J.

2009-01-01T23:59:59.000Z

442

Numerical simulation of VOC Emissions from Dry Materials , J.S. Zhang2  

E-Print Network (OSTI)

, subfloors), and insulation materials (fiberglass, rigid foam) emit a variety of volatile organic compounds

Chen, Qingyan "Yan"

443

Atomic and electronic structures of single-layer FeSe on SrTiO3(001): The role of oxygen deficiency  

Using first-principles calculation, we propose an interface structure for single triple-layer FeSe on the SrTiO3(001) surface, a high-Tc superconductor found recently. The key component of this structure is the oxygen deficiency on the top layer of the SrTiO3 substrate, as a result of Se etching used in preparing the high-Tc samples. The O vacancies strongly bind the FeSe triple layer to the substrate giving rise to a (21) reconstruction, as observed by scanning tunneling microscopy. The enhanced binding correlates to the significant increase of Tc observed in experiment. The O vacancies also serve as the source of electron doping, which modifies the Fermi surface of the first FeSe layer by filling the hole pocket near the center of the surface Brillouin zone, as suggested from angle-resolved photoemission spectroscopy measurement.

Bang, Junhyeok; Li, Zhi; Sun, Y. Y.; Samanta, Amit; Zhang, Y. Y.; Zhang, Wenhao; Wang, Lili; Chen, X.; Ma, Xucun; Xue, Q.-K.; Zhang, S. B.

2013-06-01T23:59:59.000Z

444

Anomalous temperature dependence in valence band spectra: A resonant photoemission study of layered perovskite Sr{sub 2}CoO{sub 4}  

SciTech Connect

Valence band spectra (VBS) and its modification across Curie temperature (T{sub C}) of Sr{sub 2}CoO{sub 4} thin film are studied using resonant photoemission spectroscopy. It is found that VBS mainly consists of hybridized states of Co-3d t{sub 2g}e{sub g} and O-2p; however, Co-3d e{sub g} states show its prominence only in the ferromagnetic temperature regime. Below T{sub C}, spectral weight transfer takes place anomalously from high binding energy (B.E.) region to low B.E. region, signifying the enhanced intermediate or low spin state Co{sup 4+} ions. It is suggested that spin-lattice coupling and many-body effects in Sr{sub 2}CoO{sub 4} derived from the strong electron correlations lead to such temperature dependence of VBS.

Pandey, Pankaj K.; Choudhary, R. J., E-mail: ram@csr.res.in; Phase, D. M. [UGC DAE Consortium for Scientific Research, University Campus, Indore 452001 (India)

2014-05-05T23:59:59.000Z

445

Left-handed properties of manganite-perovskites La{sub 1-x}Sr{sub x}MnO{sub 3} at various dopant concentrations  

SciTech Connect

The experimental study of Double Negative (DNG) state of electromagnetic wave propagating in lanthanum manganite-perovskites doped with strontium La{sub 1-x}Sr{sub x}MnO{sub 3} is provided firstly below individual Curie temperatures (in ferromagnetic metal state (FM) for La{sub 1-x}Sr{sub x}MnO{sub 3}). Various dopant concentrations are considered for ceramic specimens: x = 0.15;??0.225;??0.3;??0.45;??0.6. It is shown that dependence of the DNG-peak intensity on dopant concentration is sharply non-monotone with maximum at the dopant concentrations x = 0.225 0.3. This behaviour follows the change of Curie temperature with increase of dopant concentration in such substances. The obtained dependence of DNG peak intensity supports the opinion concerning the role of disorder in highly doped manganite-perovskite magnetic ceramics under study.

Belozorov, D. P. [Institute for Theoretical Physics NSC Kharkov Institute of Physics and Technology NAS of Ukraine, 1 Akademicheskaja St., Kharkov, 61108 (Ukraine)] [Institute for Theoretical Physics NSC Kharkov Institute of Physics and Technology NAS of Ukraine, 1 Akademicheskaja St., Kharkov, 61108 (Ukraine); Girich, A. A.; Tarapov, S. I., E-mail: tarapov@ire.kharkov.ua [Institute of Radiophysics and Electronics NAS of Ukraine, 12 Proskura St., Kharkov, 61085 (Ukraine); Pogorily, A. M.; Tovstolytkin, A. I. [Institute of Magnetism, 36-b Vernadsky Blvd., Kyiv 03142 (Ukraine)] [Institute of Magnetism, 36-b Vernadsky Blvd., Kyiv 03142 (Ukraine); Belous, A. G.; Solopan, S. A. [Institute of General and Inorganic Chemistry, 32/34 Palladina Blvd., Kyiv 03142 (Ukraine)] [Institute of General and Inorganic Chemistry, 32/34 Palladina Blvd., Kyiv 03142 (Ukraine)

2014-03-15T23:59:59.000Z

446

NLTE strontium abundance in a sample of extremely metal poor stars and the Sr/Ba ratio in the early Galaxy  

E-Print Network (OSTI)

Heavy element abundances in extremely metal-poor stars provide strong constraints on the processes of forming these elements in the first stars. We attempt to determine precise abundances of strontium in a homogeneous sample of extremely metal-poor stars. The abundances of strontium in 54 very or extremely metal-poor stars, was redetermined by abandoning the local thermodynamic equilibrium (LTE) hypothesis, and fitting non-LTE (NLTE) profiles to the observed spectral lines. The corrected Sr abundances and previously obtained NLTE Ba abundances are compared to the predictions of several hypothetical formation processes for the lighter neutron-capture elements. Our NLTE abundances confirm the previously determined huge scatter of the strontium abundance in low metallicity stars. This scatter is also found (and is even larger) at very low metallicities (i. e. early in the chemical evolution). The Sr abundance in the extremely metal-poor (EMP) stars is compatible with the main r-process involved in other processe...

Andrievsky, S M; Korotin, S A; Francois, P; Spite, M; Bonifacio, P; Cayrel, R; Hill, V

2011-01-01T23:59:59.000Z

447

Epitaxial Ba{sub 2}IrO{sub 4} thin-films grown on SrTiO{sub 3} substrates by pulsed laser deposition  

SciTech Connect

We have synthesized epitaxial Ba{sub 2}IrO{sub 4} (BIO) thin-films on SrTiO{sub 3} (001) substrates by pulsed laser deposition and studied their electronic structure by dc-transport and optical spectroscopic experiments. We have observed that BIO thin-films are insulating but close to the metal-insulator transition boundary with significantly smaller transport and optical gap energies than its sister compound, Sr{sub 2}IrO{sub 4}. Moreover, BIO thin-films have both an enhanced electronic bandwidth and electronic-correlation energy. Our results suggest that BIO thin-films have great potential for realizing the interesting physical properties predicted in layered iridates.

Nichols, J., E-mail: john.nichols@uky.edu; Korneta, O. B.; Terzic, J.; Cao, G.; Brill, J. W.; Seo, S. S. A. [Department of Physics and Astronomy, University of Kentucky, Lexington, Kentucky 40506 (United States)

2014-03-24T23:59:59.000Z

448

Single crystalline La0.5Sr0.5MnO3 microcubes as cathode of solid oxide fuel cell  

SciTech Connect

The efficiency of solid oxide fuel cells (SOFCs) is heavily dependent on the electrocatalytic activity of the cathode toward the oxygen reduction reaction (ORR). In order to achieve better cathode performance, single crystalline La0.5Sr0.5MnO3 (LSM) microcubes with the {200} facets have been synthesized by the hydrothermal method. It is found that the LSM microcubes exhibit lower polarization resistance than the conventional polycrystalline La0.8Sr0.2MnO3 powder in air from 700 #2;C to 900 #2;C. The ORR activation energy of the LSM microcubes is lower than that of the conventional powder. The ORR kinetics for the microcubes is limited by the charge transfer step while that for the conventional powder is dominated by the oxygen adsorption and dissociation on the cathode surface.

Mingjia Zhi; Guangwen Zhou; Zhanglian Hong; Jin Wang; Randall Gemmen; Kirk Gerdes; Ayyakkannu Manivannan; Dongling Mae; Nianqiang Wu

2010-09-13T23:59:59.000Z

449

Abnormal thermal conductivity in tetragonal tungsten bronze Ba{sub 6?x}Sr{sub x}Nb{sub 10}O{sub 30}  

SciTech Connect

Ba{sub 6?x}Sr{sub x}Nb{sub 10}O{sub 30} solid solution with 0???x???6 crystallizes in centrosymmetric tetragonal tungsten bronze structure (space group P4/mbm). We report on the x dependence of thermal conductivity of polycrystalline samples measured in the 2400?K temperature interval. Substitution of Sr for Ba brings about a significant decrease in thermal conductivity at x???3 accompanied by development of a low-temperature (T???1030?K) plateau region reminiscent of a glass-like compounds. We explain this behaviour based on a size-driven site occupancy and atomic displacement parameters associated with an alkaline earth atomic positions in the title compounds.

Kolodiazhnyi, T., E-mail: kolodiazhnyi.taras@nims.go.jp; Sakurai, H.; Vasylkiv, O.; Borodianska, H. [National Institute for Materials Science, Tsukuba, Ibaraki 305-0044 (Japan); Mozharivskyj, Y. [Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S4M1 (Canada)

2014-03-17T23:59:59.000Z

450

Superconductivity up to 114 K in the Bi-Al-Ca-Sr-Cu-O compound system without rare-earth elements  

Science Journals Connector (OSTI)

Stable superconductivity up to 114 K has been reproducibly detected in Bi-Al-Ca-Sr-Cu-O multiphase systems without any rare-earth elements. Pressure has only a slight positive effect on Tc. These observations provide an extra material base for the study of the mechanism of high-temperature superconductivity and also the prospect of reduced material cost for future applications of superconductivity.

C. W. Chu; J. Bechtold; L. Gao; P. H. Hor; Z. J. Huang; R. L. Meng; Y. Y. Sun; Y. Q. Wang; Y. Y. Xue

1988-03-07T23:59:59.000Z

451

Arthur J. Dellinger, Sr. , nomination. Hearing before the Committee on Energy and Natural Resources, United States Senate, Ninety-Seventh Congress, Second Session, June 28, 1982  

SciTech Connect

A one-day confirmation hearing on the nomination of Arthur J. Dellinger, Sr. as DOE Deputy Inspector General (IG) focused on his ability and willingness to perform the duties and on his technical qualifications. The Deputy IG assists the IG in fraud detection and prevention, department audits to promote economy and efficiency, and policy recommendations. An informational statement covering his background, financial disclosure, and correspondence follows Mr. Dellinger's testimony. (DCK)

Not Available

1982-01-01T23:59:59.000Z

452

Syntheses and characterization of energetic compounds constructed from alkaline earth metal cations (Sr and Ba) and 1,2-bis(tetrazol-5-yl)ethane  

SciTech Connect

Two new energetic compounds, [M(BTE)(H{sub 2}O){sub 5}]{sub n} (M=Sr(1), Ba(2)) [H{sub 2}BTE=1,2-bis(tetrazol-5-yl)ethane], have been hydrothermally synthesized and structurally characterized. Single-crystal X-ray diffraction analyses reveal that they are isomorphous and exhibit 2D (4,4) net framework, generated by 4-connected Sr{sub 2}(H{sub 2}O){sub 10}/Ba{sub 2}(H{sub 2}O){sub 10} SBUs linked up by two independent binding modes of H{sub 2}BTE, and the resulting 2D structure is interconnected by hydrogen-bond and strong face to face {pi}-{pi} stacking interactions between two tetrazole rings to lead to a 3D supramolecular architecture. DSC measurements show that they have significant catalytic effects on thermal decomposition of ammonium perchlorate. Moreover, the photoluminescence properties, thermogravimetric analyses, and flame colors of the as-prepared compounds are also investigated in this paper. - Graphical abstract: Two novel 2D isomorphous alkaline earth metal complexes were assembled by 4-connected Sr{sub 2}(H{sub 2}O){sub 10}/Ba{sub 2}(H{sub 2}O){sub 10} SBUs and two independent binding modes of H{sub 2}BTE ligands, and the catalytic performances toward thermal decomposition of ammonium perchlorate and photoluminescent properties of them were investigated. Highlights: > Two novel alkaline earth energetic coordination polymers have been prepared.{yields} Both structures are layered based on 4-connected Sr{sub 2}(H{sub 2}O){sub 10}/Ba{sub 2}(H{sub 2}O){sub 10} SBUs and two distinct H{sub 2}BTE coordination modes.{yields} The dehydrated products of the compounds possess good thermostability and significant catalytic effects on thermal decomposition of AP.

Xia Zhengqiang [Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, Shaanxi 710069 (China); Chen Sanping, E-mail: sanpingchen@126.com [Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, Shaanxi 710069 (China); Wei Qing, E-mail: weiqq@126.com [Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, Shaanxi 710069 (China); Qiao Chengfang [Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, Shaanxi 710069 (China)

2011-07-15T23:59:59.000Z

453

Structural, chemical, and electrochemical characteristics of LaSr2Fe2CrO9--based solid oxide fuel cell anodes  

E-Print Network (OSTI)

Available online 5 March 2012 Keywords: Solid oxide fuel cell Perovskite Oxide anode Redox Sulfur tolerance Solid oxide fuel cells with LaSr2Fe2CrO9-­Gd0.1Ce0.9O2- composite anodes were tested in H2, H2S-of-the-art solid oxide fuel cell (SOFC) anode is Ni-8-mole% yttria stabilized zirconia (YSZ), which performs very

Poeppelmeier, Kenneth R.

454

S. I. Rogers A review of closed areas in the  

E-Print Network (OSTI)

of reasons, from the need to either protect high security Royal Navy ports, ensure safety near oil and gas ........................................................................................................ 13 2.3.4 Oil and gas installations

455

Roger Barga, Principal Architect External Research Microsoft Research  

E-Print Network (OSTI)

of concept Understand the potential and limitations of our technology... Develop software tools products still under development... #12;Barga, NeSC Conference, Edinburgh, March `09 How do we measure commercial and open source software, that transform processes and accelerate time to discovery... #12;Barga

Narasayya, Vivek

456

Dr. Dale S. Rogers Professor, Logistics & Supply Chain Management  

E-Print Network (OSTI)

The Future of Global Logistics #12;The Future of Global Logistics Future of Global Logistics · Introduction Chain #12;The Future of Global Logistics Introduction #12;The Future of Global Logistics Historical Milestones In Conceptualization Shifts in Logistical Thinking · Transportation Efficiency 3000BC · Total Cost

Lin, Xiaodong

457

Meyer-Harms, Bettina, Xabier Irigoien, Robert Head, and Roger ...  

Science Journals Connector (OSTI)

M. Head and Harris (1994) first used this method to describe selective feeding by different size-fractionated zooplankton off the coast of Morocco. A modification...

1999-03-11T23:59:59.000Z

458

Algorithms for the substrate of MGR Roger T. Hartley  

E-Print Network (OSTI)

in `set pseudocode'. Since all of the algorithms are manipulations on sets and functions, the basic set with no real algorithm 1 #12;DEFINITIONSMODELSFACTS FRAGMENT SPECIALIZE choose project uncover choose cover. It does this by covering each concept in the set of fact graphs by at least one definition (see Figure 3

Hartley, Roger

459

Sourabh V. Apte 204 Rogers Hall (541) 737 7335  

E-Print Network (OSTI)

-16, 2008. 3. Moin, P., and Apte S.V., "Large-eddy Simulation of Realistic Gas Turbine Combustors," AIAA and Validation Needs for Gas Turbine Combustors). 4. Apte, S.V., and Yang, V., "A Large-eddy Simulation Study Dynamics of Homogeneous Solid Propellant in a Rocket Motor," Combustion and Flame, Vol. 131, pp. 110

Apte, Sourabh V.

460

Microsoft PowerPoint - Session2_Rogers.pptx  

Annual Energy Outlook 2012 (EIA)

2008 - 2015 1,400 ACTUAL FORECAST search Program 1,200 Yemen USA - Kenai Trinidad Russia ACTUAL FORECAST atural Gas Res 1,000 Qatar Peru Papua New Guinea Oman Nameplate...

Note: This page contains sample records for the topic "js rogers sr" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Rising Tide by Daniel Sarewitz & Roger A. Pielke, Jr.  

E-Print Network (OSTI)

are well understood--and have nothing to do with global warming. Data from the Center for Research driven by our own use of fossil fuels." Such arguments have a rich pedigree. Only nine days before alternative energy sources and reducing global carbon-dioxide emission is essential. But the claim that action

Colorado at Boulder, University of

462

4-28-09_Final_Testimony_(Rogers).pdf  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

over time-where there is significant private sector lender involvement and strong credit markets take the place of Federal assistance. Right now, in these extreme market...

463

Civil Society Must Publish Standards Documents Roger Clarke  

E-Print Network (OSTI)

society institutions to harness their resources to good effect. A very large proportion of the energies international contexts, such as the association of Institute of Electrical and Electronics Engineers (IEEE.clarke@xamax.com.au Abstract. A great deal of energy is wasted by civil society anguishing over the harm done to people

Boyer, Edmond

464

Paul V. Braun and John A. Rogers Materials Research Laboratory...  

NLE Websites -- All DOE Office Websites (Extended Search)

epitaxy of high- performance III-V semiconductor materials. We have demonstrated optoelectronic functionality by fabricating a 3D photonic crystal LED, the rst- ever electrically...

465

Stanislav Golubov, and Roger Stoller - Materials Science and...  

NLE Websites -- All DOE Office Websites (Extended Search)

The team also investigated the response of textured materials, including rolled Zircaloy-2 and a random texture, both illustrated in Fig. 9. The results, plotted in Fig.10 and...

466

METHOD FOR SIMULTANEOUS 90SR AND 137CS IN-VIVO MEASUREMENTS OF SMALL ANIMALS AND OTHER ENVIRONMENTAL MEDIA DEVELOPED FOR THE CONDITIONS OF THE CHERNOBYL EXCLUSION ZONE  

SciTech Connect

To perform in vivo simultaneous measurements of the {sup 90}Sr and {sup 137}Cs content in the bodies of animals living in the Chernobyl Exclusion Zone (ChEZ), an appropriate method and equipment were developed and installed in a mobile gamma beta spectrometry laboratory. This technique was designed for animals of relatively small sizes (up to 50 g). The {sup 90}Sr content is measured by a beta spectrometer with a 0.1 mm thick scintillation plastic detector. The spectrum processing takes into account the fact that the measured object is 'thick-layered' and contains a comparable quantity of {sup 137}Cs, which is a characteristic condition of the ChEZ. The {sup 137}Cs content is measured by a NaI scintillation detector that is part of the combined gamma beta spectrometry system. For environmental research performed in the ChEZ, the advantages of this method and equipment (rapid measurements, capability to measure live animals directly in their habitat, and the capability of simultaneous {sup 90}Sr and {sup 137}Cs measurements) far outweigh the existing limitations (considerations must be made for background radiation and the animal size, skeletal shape and body mass). The accuracy of these in vivo measurements is shown to be consistent with standard spectrometric and radiochemical methods. Apart from the in vivo measurements, the proposed methodology, after a very simple upgrade that is also described in the article, works even more accurately with samples of other media, such as soil and plants.

Farfan, E.; Jannik, T.

2011-10-01T23:59:59.000Z

467

Superconductivity in La1.56Sr0.44CuO4/La2CuO4 Superlattices  

SciTech Connect

Superlattices of the repeated structure La{sub 1.56}Sr{sub 0.44}CuO{sub 4}/La{sub 2}CuO{sub 4} (LSCO-LCO), where none of the constituents is superconducting, show a superconducting transition of T{prime}{sub c} 25 K. In order to elucidate the nature of the superconducting state we have performed a low-energy {mu}SR study. By applying a magnetic field parallel (Meissner state) and perpendicular (vortex state) to the film planes, we could show that superconductivity is sheet like, resulting in a very anisotropic superconducting state. This result is consistent with a simple charge-transfer model, which takes into account the layered structure and the difference in the chemical potential between LCO and LSCO, as well as Sr interdiffusion. Using a pancake-vortex model we could estimate a strict upper limit of the London penetration depth to 380 nm in these superlattices. The temperature dependence of the muon depolarization rate in field cooling experiments is very similar to what is observed in intercalated BSCCO and suggests that vortex-vortex interaction is dominated by electromagnetic coupling but negligible Josephson interaction.

Bozovic I.; Suter, A.; Morenzoni, E.; Prokscha, T.; Luetkens, H.; Wojek, B.M.; Logvenov, G.; Gozar, A.

2011-12-01T23:59:59.000Z

468

Electrical properties of the perovskite Y{sub 0.9}Sr{sub 0.1}CoO{sub 3-{delta}} prepared by a solution method  

SciTech Connect

Single-phase Y{sub 0.9}Sr{sub 0.1}CoO{sub 3-{delta}} powders were prepared using a solution method based on the dissolution in aqueous media of stoichiometric amounts of yttrium, strontium and cobalt nitrates. Precursor powders were slowly heated from 90 to 950 deg. C in air. Structural evolution was investigated by X-ray powder diffraction (XRD) as a function of increasing calcination temperature. Differential thermal analysis performed up to 1200 deg. C was used to identify the temperature of formation for Y{sub 0.9}Sr{sub 0.1}CoO{sub 3-{delta}}, which occurred at {approx}912 deg. C. Single-phase polycrystalline powders having the perovskite structure were synthesized at 950 deg. C, their microstructure and particle size were determined by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Thick films of Y{sub 0.9}Sr{sub 0.1}CoO{sub 3-{delta}} were deposited by the screen printing method on alumina substrates, in order to evaluate their electrical conductivity from room temperature to 700 deg. C. These measurements were performed in presence of air, oxygen and nitrogen. A semiconductor behavior with possible mixed ionic-electronic conductivity was observed. Sensitivity to nitrogen and oxygen showed a maximum at 579 and 557 deg. C, respectively.

Michel, C.R. [Departamento de Fisica CUCEI, Universidad de Guadalajara, Blvd. M. Garcia Barragan 1421, Guadalajara, Jalisco 44430 (Mexico)]. E-mail: michelucr@yahoo.es; Gago, A.S. [Departamento de Fisica CUCEI, Universidad de Guadalajara, Blvd. M. Garcia Barragan 1421, Guadalajara, Jalisco 44430 (Mexico); Guzman-Colin, H. [Departamento de Fisica CUCEI, Universidad de Guadalajara, Blvd. M. Garcia Barragan 1421, Guadalajara, Jalisco 44430 (Mexico); Lopez-Mena, E.R. [Departamento de Fisica CUCEI, Universidad de Guadalajara, Blvd. M. Garcia Barragan 1421, Guadalajara, Jalisco 44430 (Mexico); Lardizabal, D. [Centro de Investigacion en Materiales Avanzados (CIMAV), Miguel Cervantes 120, Chihuahua, Chihuahua 31109 (Mexico); Buassi-Monroy, O.S. [Departamento de Fisica y Matematicas. ITESO. Av. Periferico Sur 8585, Tlaquepaque, Jalisco 45090 (Mexico)

2004-12-02T23:59:59.000Z

469

Studies on Structural and Dielectric Properties of ABi{sub 4}Ti{sub 4}O{sub 15} (A Ba, Sr and Pb) Ceramics  

SciTech Connect

Bismuth Titanate based electroceramics of layered perovskite structures are technologically important materials for high temperature piezoelectric and ferroelectric applications, due to their high Curie temperature (675 deg. C), Stable piezoelectric response and excellent dielectric properties. The compounds ABi{sub 4}Ti{sub 4}O{sub 15} (A = Ba, Sr and Pb) belongs to Aurivillius family (n = 4) in which BaBi{sub 4}Ti{sub 4}O{sub 15} crystallizes in tetragonal I4/mmm space group, Sr Bi{sub 4}Ti{sub 4}O{sub 15} and PbBi{sub 4}Ti{sub 4}O{sub 15} crystallizes in orthorhombic space group A2{sub 1}am. In the present work ABi{sub 4}Ti{sub 4}O{sub 15} (A = Ba, Sr and Pb) ceramic samples are prepared through the solid state reaction by conventional mixed oxides by calcination at high temperature. Dielectric constant ({epsilon}'{sub r}) and Dielectric Loss (D) for all the compositions as a function of temperature measured from frequencies 100 Hz to 100 KHz using a HIOKI 3532-50 LCR meter. The dielectric constant increases gradually with an increase in temperature up to transition temperature (T{sub c,} K) and then decreases.

Reddy, T. Gopal; Kumar, B. Rajesh; Rao, T. Subba [Materials Research Lab, Department of Physics, Sri Krishnadevaraya University, Anantapur-515055, A.P. (India)

2010-12-01T23:59:59.000Z

470

FREQUENCY DISTRIBUTIONS OF 90SR AND 137CS CONCENTRATIONS IN AN ECOSYSTEM OF THE 'RED FOREST' AREA IN THE CHERNOBYL EXCLUSION ZONE  

SciTech Connect

In the most highly contaminated region of the Chernobyl Exclusion Zone: the 'Red Forest' site, the accumulation of the major dose-affecting radionuclides ({sup 90}Sr and {sup 137}Cs) within the components of an ecological system encompassing 3,000 m{sup 2} were characterized. The sampled components included soils (top 0-10 cm depth), Molina caerulea (blue moor grass), Camponotus vagus (carpenter ants) and Pelobates fuscus (spade-footed toad). In a comparison among the components of this ecosystem, the {sup 90}Sr and {sup 137}Cs concentrations measured in 40 separate grids exhibited significant differences, while the frequency distribution of the values were close to a logarithmically normal leptokurtic distribution with a significant right-side skew. While it is important to identify localized areas of high contamination or 'hot spots,' including these values in the arithmetic mean may overestimate the exposure risk. In component sample sets that exhibited logarithmically normal distribution, the geometrical mean more accurately characterizes a site. Ideally, risk assessment is most confidently achieved when the arithmetic and geometrical means are most similar, meaning the distribution approaches normal. Through bioaccumulation, the highest concentrations of {sup 90}Sr and {sup 137}Cs were measured in the blue moor grass and spade-footed toad. These components also possessed distribution parameters that shifted toward a normal distribution.

Farfan, E.; Jannik, T.; Caldwell, E.

2011-10-01T23:59:59.000Z

471

Effects of low-level Ag doping on Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+x}  

SciTech Connect

Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8} has been doped with silver, up to 10,000 ppm, in three ways: excess additions, substitution of Ag for Bi, and substitution of Ag for Sr. Effects of doping on the c-axis lattice parameter and critical temperature ({Tc}) were measured. Effects from doing were only observed in slow-cooled [10{degree}/hr] oxygen equilibrated samples. Doping by excess additions caused a small decrease in {Tc} and an increase in the c-axis length of the lattice. Doping by substitution, compared to excess Ag additions, caused a larger decrease in {Tc} and higher c-axis values for doping levels up to 1,000 ppm. Doping by substitution at higher levels (1,000--10,000 ppm) caused {Tc} to increase and the c-axis to decrease. Samples with similar substitutional doping levels exhibited comparable {Tc} values and samples with Ag substituted for Sr consistently exhibited higher c-axis values than samples that had equivalent amounts of Ag substituted for Bi.

Deis, T.A.; Eror, N.G.; Krishnaraj, P.; Prorok, B.C.; Lelovic, M. [Univ. of Pittsburgh, PA (United States). Dept. of Materials Science and Engineering; Balachandran, U. [Argonne National Lab., IL (United States). Energy Technology Div.

1995-07-01T23:59:59.000Z

472

LaL2SrL8Mn207BelowTc : Exchange StricthR ECEI VED  

NLE Websites -- All DOE Office Websites (Extended Search)

088-00-105 088-00-105 58916-00-105 9714E3 co C--q 03/64 - 1 Sign Reversal of the MN-0 bond Compressibility r in LaL2SrL8Mn207BelowTc : Exchange StricthR ECEI VED in the Ferromagnetic State JUL Q 7 1997 O S T I D. N. Argyriout§ J. F. Mitchell, J. B. Goodenough * , 0. Chmaissemt S. Short, and J. D. Jorgensen t Science and Technology Center for Superconductivity and Materials Science Division Argonne National Laboratory Argonne, IL 60439 * Center for Materials Science and Engineering, ECT 9.102 University of Texas at Austin Austin, TX 78712-1063 the submitted manuscript has been created by the University of Chicago as Operator of Argonne National ( Argonne") under Contract No. W-31-109-ENG-38 with the U. S. Department of Energy. The U.S. Government retains for itself, and others acting on its behalf, a paid-up, non

473

Synthesis, structure, and properties of four ternary compounds: CaSrTt, Tt=Si, Ge, Sn, Pb  

SciTech Connect

The title compounds were synthesized and characterized by structural measurements and electronic structure calculations. Single-crystal X-ray diffraction analyses established that they all have the orthorhombic inverse-PbCl{sub 2}-type structure (Pnma, Z=4, a=8.108(2), 8.124(2), 8.421(2), 8.509(2)A; b=4.944(1), 4.949(1), 5.168(1), 5.189(1)A; c=9.170(2), 9.184(2), 9.685(2), 9.740(2)A, respectively). The tetrel (Tt) atoms are situated in tricapped trigonal prisms of ordered Sr and Ca atoms in which the smaller Ca atoms play a distinctive role. The structure is distinguishable from the Co{sub 2}Si type by its more nearly ideal 6+3 (TCTP) environment about Tt rather than a higher coordination by cations. Other representations of the two structural types are also considered. Electronic band structure calculations suggest that the compounds are semiconductors, in agreement with literature data on their Ae{sub 2}Tt analogues.

Liu Shengfeng [Ames Laboratory, Department of Chemistry, Iowa State University, Ames, Iowa 50010 (United States); Corbett, John D. [Ames Laboratory, Department of Chemistry, Iowa State University, Ames, Iowa 50010 (United States)]. E-mail: jcorbett@iastate.edu

2006-03-15T23:59:59.000Z

474

Quantitative determination of energy enhanced interlayer transport in pulsed laser deposition of SrTiO3  

Science Journals Connector (OSTI)

We show that the analysis of single-shot surface x-ray diffraction transients in terms of time-dependent coverages allows quantitative determination of interlayer transport in pulsed-laser deposition of SrTiO3. The fast interlayer transport during and immediately after the arrival of the laser plume and before crystallization represents the dominant mechanism for redistribution of the deposited material that is completed on a ?s-range or faster time scale. Following crystallization interlayer transport is more than four orders of magnitude slower because it is driven only by sluggish thermally activated processes, which represent a small fraction of total interlayer transport that decreases with increasing laser repetition rate. The analysis of growth kinetics shows that it is fast interlayer transport driven by hyperthermal energy species and not thermal annealing that governs layer completion that determines the growth mode and the formation of atomically sharp interfaces in pulsed-laser deposition of epitaxial oxide films and similar energy-enhanced growth processes.

Gyula Eres; J. Z. Tischler; C. M. Rouleau; P. Zschack; H. M. Christen; B. C. Larson

2011-11-28T23:59:59.000Z

475

Infection of the basal ganglia by a murine coronavirus  

Science Journals Connector (OSTI)

...1126/science.2992088 PS Fishman JS Gass PT Swoveland E Lavi MK Highkin Weiss SR The coronavirus, mouse hepatitis virus strain...the nigra and rarely into the small-cell pars reticulata. Ultra-structural examination of the antigen-positive region revealed...

PS Fishman; JS Gass; PT Swoveland; E Lavi; MK Highkin; Weiss SR

1985-08-30T23:59:59.000Z

476

A Phase I Clinical Trial of Safingol in Combination with Cisplatin in Advanced Solid Tumors  

Science Journals Connector (OSTI)

...DA , Kelley M, Zhang J, Li L, Tao R Karliner JS.Dimethylsphingosine and...Igarashi Y, Yang L, Hisano N, Qi R, Asazuma N, et alSphingosine 1-phosphate...FASEB J 2007;21:1202-9. 24. Pappu R , Schwab SR, Cornelissen I, Pereira...

Mark A. Dickson; Richard D. Carvajal; Alfred H Merrill, Jr; Mithat Gonen; Lauren M. Cane; and Gary K. Schwartz

477

Suppression of photovoltaic effect by magnetic field in Pr{sub 0.65}(Ca{sub 0.75}Sr{sub 0.25}){sub 0.35}MnO{sub 3}/Nb:SrTiO{sub 3} heterostructure  

SciTech Connect

The heterostructure composed of Pr{sub 0.65}(Ca{sub 0.75}Sr{sub 0.25}){sub 0.35}MnO{sub 3} and 0.7?wt.% Nb-doped SrTiO{sub 3} was fabricated. The heterostructure exhibits an asymmetric current-voltage relation similar to that of p-n junctions and an obvious photovoltaic effect with its maximum value of about 25.1?mV at T?=?140?K. It is interesting that the magnetic field has a strong suppression effect on photovoltaic effect, and the maximum relative change of photovoltage under the magnetic field of 1?T is about 63% with the illumination of 15 mW/mm{sup 2} light (532?nm) at T???140?K. The physical mechanism is explained by the electronic phase separation mechanism.

Luo, C.; Jin, K. X., E-mail: jinkx@nwpu.edu.cn; Chen, C. L. [Shaanxi Key Laboratory of Condensed Matter Structures and Properties and Key Laboratory of Space Applied Physics and Chemistry, Ministry of Education, School of Science, Northwestern Polytechnical University, Xi'an 710072 (China)] [Shaanxi Key Laboratory of Condensed Matter Structures and Properties and Key Laboratory of Space Applied Physics and Chemistry, Ministry of Education, School of Science, Northwestern Polytechnical University, Xi'an 710072 (China); Wu, T. [Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371 (Singapore)] [Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371 (Singapore)

2013-11-18T23:59:59.000Z

478

Distribution change of oxygen vacancies in layered perovskite type(Sr, La){sub n+1}Fe{sub n}O{sub 3n+1} (n=3)  

SciTech Connect

To elucidate characteristic oxygen vacancy formation in layered perovskite (Sr, La){sub n+1}Fe{sub n}O{sub 3n+1} with the perovskite layer number: n=3, oxygen vacancy content ? of the (Sr{sub 0.775}La{sub 0.225}){sub 4}Fe{sub 3}O{sub 10??} (SLF4310) was investigated using a titration technique and a thermogravimetric analysis. The equilibrium constant K for the reduction reaction: Oo{sup }+2Fe{sub Fe}{sup ?} (Fe{sup 4+})=1/2O{sub 2}+Vo{sup ??}+2Fe{sub Fe}{sup }(Fe{sup 3+}) was estimated using the vacancy content ?. The Arrhenius plot of the K reveals slope change at approximately 775 C. From the Rietveld analysis, the oxygen vacancies are the most remarkable at the O2 (O4) sites at lower (higher) temperatures than about 800 C, which temperature is approximately comparable with that of slope change in the K. These facts mean that distribution of vacancy sites in the SLF4310 changes at approximately 775 C, accompanying no structural phase transition. The vacancy distribution change affects to the ion conductivity of the SLF4310. - Graphical abstract: Crystal structure of (Sr{sub 0.775}La{sub 0.225}){sub 4}Fe{sub 3}O{sub 10??} (SLF4310) at 1000 C. Display Omitted - Highlights: Distribution change of oxygen vacancies is appeared at approximately 775 C. The distribution change with no structure phase transition is the first observation. The vacancy distribution change affects the ion conductivity of the SLF4310.

Kagomiya, Isao, E-mail: kagomiya@nitech.ac.jp; Jimbo, Keigo; Kakimoto, Ken-ichi

2013-11-15T23:59:59.000Z

479

Magnetic structure of Sr{sub 2}Fe{sub 2}O{sub 5} brownmillerite by single-crystal Mssbauer spectroscopy  

SciTech Connect

In order to determine orientation of the Fe{sup 3+} magnetic moments and electric field gradient (efg) axes in the brownmillerite-type strontium ferrite structure for both iron sublattices where the efg tensor is not axially symmetric, the Mssbauer spectra of powdered and oriented single-crystal Sr{sub 2}Fe{sub 2}O{sub 5} were analyzed by solving the complete Hamiltonian for hyperfine interactions in the excited and ground states of the {sup 57}Fe nuclei. The magnetic moments of both octahedrally and tetrahedrally coordinated iron cations lie on the ac-plane of the orthorhombic unit cell and are parallel to the shortest c-axis, whilst the main efg axes are parallel to the longest crystallographic axis, b. This orientation is similar to that in Ca{sub 2}Fe{sub 2}O{sub 5}, in spite of the structural differences of strontium and calcium ferrite brownmillerites at low temperatures. - Graphical abstract: Mssbauer spectra of powdered and oriented single-crystal Sr{sub 2}Fe{sub 2}O{sub 5}, analyzed by solving the complete Hamiltonian for hyperfine interactions in the excited and ground states of the {sup 57}Fe nuclei, show that the magnetic moments of both octahedrally and tetrahedrally coordinated iron cations are parallel to the shortest c-axis of the orthorhombic brownmillerite unit cell . Display Omitted - Highlights: Single-crystal Mssbauer spectroscopy is used to study magnetic structure of Sr{sub 2}Fe{sub 2}O{sub 5}. Complete Hamiltonian for hyperfine interactions in excited and ground states was solved. Fe{sup 3+} magnetic moments are parallel to the shortest crystallographic axis c. The orientation of nuclear electric field gradient is similar to that in Ca{sub 2}Fe{sub 2}O{sub 5}.

Waerenborgh, J.C. [UCQR, IST/ITN, Instituto Superior Tcnico, Universidade Tcnica de Lisboa, CFMC-UL, Estrada Nacional 10, 2686-953 Sacavm (Portugal); Tsipis, E.V. [UCQR, IST/ITN, Instituto Superior Tcnico, Universidade Tcnica de Lisboa, CFMC-UL, Estrada Nacional 10, 2686-953 Sacavm (Portugal); Department of Materials and Ceramic Engineering, CICECO, University of Aveiro, 3810-193 Aveiro (Portugal); Auckett, J.E.; Ling, C.D. [School of Chemistry, The University of Sydney, Sydney 2006 (Australia); Kharton, V.V., E-mail: kharton@ua.pt [Department of Materials and Ceramic Engineering, CICECO, University of Aveiro, 3810-193 Aveiro (Portugal); Institute of Solid State Physics RAS, Chernogolovka 142432, Moscow Region (Russian Federation)

2013-09-15T23:59:59.000Z

480

Ca, Sr, O and D isotope approach to defining the chemical evolution of hydrothermal fluids: Example from Long Valley, CA, USA  

Science Journals Connector (OSTI)

Abstract We present chemical and isotopic data for fluids, minerals and rocks from the Long Valley meteoric-hydrothermal system. The samples encompass the presumed hydrothermal upwelling zone in the west moat of the caldera, the Casa Diablo geothermal field, and a series of wells defining a nearly linear, ?16km long, west-to-east trend along the likely fluid flow path. Fluid samples were analyzed for the isotopes of water, Sr, and Ca, the concentrations of major cations and anions, alkalinity, and total CO2. Water isotope data conform to trends documented in earlier studies, interpreted as indicating a single hydrothermal fluid mixing with local groundwater. Sr isotopes show subtle changes along the flow path, which requires rapid fluid flow and minimal reaction between the channelized fluids and the wallrocks. Sr and O isotopes are used to calculate fracture spacing using a dual porosity model. Calculated fracture spacing and temperature data for hydrothermal fluids indicate the system is (approximately) at steady-state. Correlated variations among total CO2, and the concentration and isotopic composition of Ca suggest progressive fluid degassing (loss of CO2), which drives calcite precipitation as the fluid flows west-to-east and cools. The shifts in Ca isotopes require that calcite precipitated at temperatures of 150180C is fractionated by ca. ?0.3 to ?0.5 relative to aqueous species. Our data are the first evidence that Ca isotopes undergo kinetic fractionation at high temperatures (>100C) and can be used to trace calcite precipitation along hydrothermal fluid flow paths.

Shaun T. Brown; B. Mack Kennedy; Donald J. DePaolo; Shaul Hurwitz; William C. Evans

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "js rogers sr" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

Method of forming a dielectric thin film having low loss composition of Ba.sub.x Sr.sub.y Ca.sub.1-x-y TiO.sub.3 : Ba.sub.0.12-0.25 Sr.sub.0.35-0.47 Ca.sub.0.32-0.53 TiO.sub.3  

DOE Patents (OSTI)

A dielectric thin-film material for microwave applications, including use as a capacitor, the thin-film comprising a composition of barium strontium calcium and titanium of perovskite type (Ba.sub.x Sr.sub.y Ca.sub.1-x-y)TiO.sub.3. Also provided is a method for making a dielectric thin film of that formula over a wide compositional range through a single deposition process.

Xiang, Xiao-Dong (Alameda, CA); Chang, Hauyee (Berkeley, CA); Takeuchi, Ichiro (Albany, CA)

2000-01-01T23:59:59.000Z

482

Zero-field ?SR search for a time-reversal-symmetry-breaking mixed pairing state in superconducting Ba1?xKxFe2As2  

Science Journals Connector (OSTI)

We report the results of a zero-field muon-spin relaxation (ZF-?SR) study of superconducting Ba1?xKxFe2As2 (0.5?x?0.9) in search of weak spontaneous internal magnetic fields associated with proposed time-reversal-symmetry-breaking mixed pairing states. The measurements were performed on polycrystalline samples, which do not exhibit the mesoscopic phase separation previously observed in single crystals of Ba1?xKxFe2As2. No evidence of spontaneous internal magnetic fields is found in any of the samples at temperatures down to T?0.02 K.

Z. Lotfi Mahyari; A. Cannell; C. Gomez; S. Tezok; A. Zelati; E. V. L. de Mello; J.-Q. Yan; D. G. Mandrus; J. E. Sonier

2014-01-08T23:59:59.000Z

483

CO2-Tolerant and Cobalt-Free SrFe0.8Nb0.2O3?? Perovskite Membrane for Oxygen Separation  

Science Journals Connector (OSTI)

The membranes can be integrated with a number of oxygen-involved industry processes, such as oxyfuel combustion and partial oxidation of methane into syngas (POM). ... (22) In the present study, the potential to use Sr(Fe, Nb)O3?? as oxygen permeable membranes, in particular for oxyfuel applications, was experimentally assessed. ... A proper balance between the chemical stability and performance as well as composition simplicity is achieved in SFN82, making it a promising candidate as oxygen permeable membrane for oxyfuel application. ...

Jianxin Yi; Michael Schroeder; Manfred Martin

2013-02-14T23:59:59.000Z

484

Scanning Josephson Tunneling Microscopy of Single Crystal Bi2Sr2CaCu2O8+delta with a Conventional Superconducting Tip  

SciTech Connect

We have performed both Josephson and quasiparticle tunneling in vacuum tunnel junctions formed between a conventional superconducting scanning tunneling microscope tip and overdoped Bi2Sr2CaCu2O8+ single crystals. A Josephson current is observed with a peak centered at a small finite voltage due to the thermal-fluctuation-dominated superconducting phase dynamics. Josephson measurements at different surface locations yield local values for the Josephson ICRN product. Corresponding energy gap measurements were also performed and a surprising inverse correlation was observed between the local ICRN product and the local energy gap.

Kimura, H.; Barber Jr., R. P.; Ono, S.; Ando, Yoichi; Dynes, Robert C.

2009-10-28T23:59:59.000Z

485

Fabrication of submicron La{sub 2-x}Sr{sub x}CuO{sub 4} intrinsic Josephson junction stacks  

SciTech Connect

Intrinsic Josephson junction (IJJ) stacks of cuprate superconductors have potential to be implemented as intrinsic phase qubits working at relatively high temperatures. We report success in fabricating submicron La{sub 2-x}Sr{sub x}CuO{sub 4} (LSCO) IJJ stacks carved out of single crystals. We also show a new fabrication method in which argon ion etching is performed after focused ion beam etching. As a result, we obtained an LSCO IJJ stack in which resistive multibranches appeared. It may be possible to control the number of stacked IJJs with an accuracy of a single IJJ by developing this method.

Kubo, Yuimaru; Takano, Yoshihiko [Superconducting Materials Center, National Institute for Materials Science (NIMS), Tsukuba 305-0047 (Japan); Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba 305-8571 (Japan); Takahide, Yamaguchi; Ueda, Shinya; Ishii, Satoshi; Tsuda, Shunsuke [Superconducting Materials Center, National Institute for Materials Science (NIMS), Tsukuba 305-0047 (Japan); Tanaka, Takayoshi [Material Manufacture and Engineering Station, National Institute for Materials Science (NIMS), Tsukuba 305-0047 (Japan); Islam, ATM Nazmul; Tanaka, Isao [Center for Crystal Science and Technology, University of Yamanashi, Kofu 400-8511 (Japan)

2011-02-01T23:59:59.000Z

486

Competition of interbilayer magnetic couplings in R1.4Sr1.6Mn2O7 (R=La1-zNdz)  

Science Journals Connector (OSTI)

Chemical substitution effects on the magnetic and transport properties have been investigated for single crystals of (La1-zNdz)1.4Sr1.6Mn2O7 with bilayer structure. We have found that the ferromagnetic ground state for z=0.0 is replaced by a layered antiferromagnetic state with alternating ferromagnetic bilayers beyond z>~0.1. Reflecting the subtle balance of the competing interbilayer exchange couplings, application of an external magnetic field induces an antiferromagnetic-ferromagnetic transition. The transition accompanies a switching-type reduction of the current-perpendicular-to-plane resistivity, which can be viewed as a spin-valve functionality.

Y. Moritomo; K. Ohoyama; M. Ohashi

1999-01-01T23:59:59.000Z

487

Operational Inhomogeneities in La0.9Sr0.1Ga0.8Mg0.2O3d Electrolytes  

E-Print Network (OSTI)

­ Ce0.9Gd0.1O2­d Composite Anodes for Solid Oxide Fuel Cells Y. Liao1 *, D. M. Bierschenk1 , S. A Introduction Ni cermet anodes are commonly used in solid oxide fuel cells (SOFCs) [1­4], but there has been.liao@globalsino.com Abstract The electrolyte/anode interface in solid oxide fuel cells with La0.9Sr0.1Ga0.8Mg0.2O3­d

Marks, Laurence D.

488

Controlling magnetic anisotropy in La{sub 0.7}Sr{sub 0.3}MnO{sub 3} nanostructures  

SciTech Connect

We have developed a chlorine based dry etching process for nanopatterning the ferromagnetic oxide La{sub 0.7}Sr{sub 0.3}MnO{sub 3} (LSMO). Large arrays of millions of identical structures have been fabricated from thin LSMO films by electron-beam lithography and reactive ion etching. SQUID magnetometry demonstrates that patterned nanostructures with lateral dimensions down to 100?nm retain their full magnetization and the Curie temperature of the bulk layer. In addition, their shape anisotropy is sufficient to overcome the crystalline anisotropy of the bulk. High resolution scanning transmission electron microscopy shows that crystallinity is preserved even at the edges of the nanostructures.

Wahler, M.; Bttner, B.; Blaschek, H.-H.; Homonnay, N.; Wid, O. [Institut fr Physik, Martin-Luther-Universitt Halle-Wittenberg, D-06099 Halle (Germany); O'Shea, K. J.; McGrouther, D.; MacLaren, D. A. [SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ (United Kingdom); Schmidt, G., E-mail: georg.schmidt@physik.uni-halle.de [Institut fr Physik, Martin-Luther-Universitt Halle-Wittenberg, D-06099 Halle (Germany); IZM, Martin-Luther-Universitt Halle-Wittenberg, D-06099 Halle (Germany)

2014-02-03T23:59:59.000Z

489

Magneto-transport in LaTi{sub 1?x}Mn{sub x}O{sub 3}/SrTiO{sub 3} oxide heterostructures  

SciTech Connect

We report the growth of ultrathin film of Mn doped LaTiO{sub 3} on TiO{sub 2} terminated SrTiO{sub 3} (001) substrate by pulsed laser deposition (PLD) and their electrical transport characteristics including magnetoresistance (MR). Though the replacement of Mn in LaTiO{sub 3} at the Ti site in dilute limit does not affect the metallic behaviour of films but variation in resistance is observed. Normalised resistance behaviour is explained on the basis of variation in charge carriers and increased interaction between Mn atoms in the system under investigation.

Kumar, Pramod, E-mail: pramodnpl2011@gmail.com; Dogra, Anjana, E-mail: pramodnpl2011@gmail.com; Budhani, R. C., E-mail: pramodnpl2011@gmail.com [Quantum Phenomena and Applications Division, National Physical Laboratory (CSIR), Dr. K.S. Krishnan Marg, New Delhi-110012 (India)

2014-04-24T23:59:59.000Z

490

Coexistence of bulk superconducting and antiferromagnetic order in the spin-ladder system Sr2Ca12Cu24O41  

Science Journals Connector (OSTI)

Combined ac-susceptibility and ac-calorimetry measurements under hydrostatic pressure on new single crystals of the spin-ladder system Sr14?xCaxCu24O41 (x=12) in good hydrostatic conditions allow us to unambiguously establish the phase diagram. We show that bulk superconductivity and antiferromagnetic order coexist over a wide pressure range, which is quite rare in strongly correlated systems where the same electrons participate in superconductivity and magnetic order. We suggest that this is possible by the special microscopic structure of this material, containing ladders and chains, with a weak coupling between the two.

S. Vanishri; D. Braithwaite; B. Salce; C. Marin; J. Flouquet

2010-03-10T23:59:59.000Z

491

Nonuniversal power law of the Hall scattering rate in a single-layer cuprate Bi2Sr2-xLaxCuO6  

Science Journals Connector (OSTI)

In-plane resistivity, Hall coefficient, and magnetoresistance are measured in a series of high-quality Bi2Sr2-xLaxCuO6 crystals with various carrier concentrations, from underdoped to overdoped. It is found that the temperature dependence of the cotangent of the Hall angle obeys a power law T? with ? systematically decreasing with increasing carriers. While the observed power-law behavior supports the scattering-time separation, the universality of the Fermi-liquid-like T2 dependence of the Hall scattering rate is seriously questioned.

Yoichi Ando and T. Murayama

1999-09-01T23:59:59.000Z

492

Effects of Nb doping level on the electronic transport, photoelectric effect and magnetoresistance across La{sub 0.5}Ca{sub 0.5}MnO{sub 3}/Nb:SrTiO{sub 3} junctions  

SciTech Connect

Heterojunctions composed of La{sub 0.5}Ca{sub 0.5}MnO{sub 3} and Nb doped SrTiO{sub 3} were fabricated, and the effects of the Nb doping level on their electronic transport, photoelectric effect, and magnetoresistance were investigated. A lower doping concentration of Nb led to better rectifying properties and higher open circuit voltages. The I-V curves for La{sub 0.5}Ca{sub 0.5}MnO{sub 3}/0.7?wt.?% Nb-SrTiO{sub 3} showed a negligible response to magnetic fields for all temperatures, whereas La{sub 0.5}Ca{sub 0.5}MnO{sub 3}/0.05?wt.?% Nb-SrTiO{sub 3} exhibited distinct magnetoresistance, which depended on both the bias voltage and temperature. These results are discussed with the assistance of conventional semiconductor theories.

Wang, J. F., E-mail: jifewang@gmail.com [Department of Physics, The University of Hong Kong, Pokfulam Road (Hong Kong); College of Science, China Jiliang University, Hangzhou, Zhejiang 310018 (China); Jiang, Y. C.; Gao, J., E-mail: jugao@hku.hk [Department of Physics, The University of Hong Kong, Pokfulam Road (Hong Kong); Chen, M. G. [College of Science, China Jiliang University, Hangzhou, Zhejiang 310018 (China)] [College of Science, China Jiliang University, Hangzhou, Zhejiang 310018 (China)

2013-12-16T23:59:59.000Z

493

2010SR05.doc  

NLE Websites -- All DOE Office Websites (Extended Search)

Big Top Tent Keeps TRU Waste Trucks, Tanks Big Top Tent Keeps TRU Waste Trucks, Tanks Dry before Inspection and Shipping Big Top Aids Solid Waste Management in Shipping Protocol Aiken, S.C. - Important projects for the Recovery Act - and not a circus act - are being performed under the Big Top at Solid Waste Management facility at the Department of Energy's (DOE) Savannah River Site (SRS). The jumbo-size vinyl tent with a metal frame measuring 160 feet long, 24 feet wide, and

494

2010sr25.doc  

NLE Websites -- All DOE Office Websites (Extended Search)

Tuesday, August 31, 2010 Tuesday, August 31, 2010 james-r.giusti@srs.gov John Lindsay, SRR, (803) 208-6253 john02lindsay@srs.gov Tank 37 Salt Removal Marks Second Liquid Waste Project Completed Recovery Act Project at SRS Aiken, SC -- Moving radioactive salt safely, closing liquid waste tanks and saving money are the drivers behind the successful completion of another American Recovery and Reinvestment Act project at the Department of Energy's

495

SR0913.docx  

NLE Websites -- All DOE Office Websites (Extended Search)

NEWS MEDIA CONTACT: FOR IMMEDIATE RELEASE NEWS MEDIA CONTACT: FOR IMMEDIATE RELEASE Jim Giusti, DOE, (803) 952-7697 Wednesday, July 1, 2009 james-r.giusti@srs.gov Paivi Nettamo, SRNS, (803) 952-6938 paivi.nettamo@srs.gov SAVANNAH RIVER SITE SET DATES FOR RECOVERY ACT PROJECT TOWN HALL MEETINGS AND JOB FAIRS Aiken, S.C., July 7, 2009 * Augusta, G.A., July 20, 2009 Aiken, SC - The Department of Energy announced today that DOE's Savannah River

496

sr0801.doc  

NLE Websites -- All DOE Office Websites (Extended Search)

Office, P.O. Box A, Aiken, S.C. 29802 Office, P.O. Box A, Aiken, S.C. 29802 NEWS MEDIA CONTACTS: For Immediate Release June 19, 2008 Julie Petersen (803) 952-7690 julie.petersen@srs.gov Jim Giusti (803) 952-7684 james-r.giusti@srs.gov DOE Marks Key Cleanup and Closure Milestones at its Savannah River Site AIKEN, S.C. - U.S. Department of Energy (DOE) Assistant Secretary for Environmental Management (EM) James A. Rispoli today marked the start of normal operations of interim salt waste processing facilities - the Actinide Removal Process (ARP) and the Modular Caustic Side Solvent Extraction Unit (MCU) - and the official closure of the General Separations Area Consolidated Unit (GSACU) at DOE's Savannah River Site (SRS). Removing the salt waste,

497

sr0905.doc  

NLE Websites -- All DOE Office Websites (Extended Search)

Media Contact: Release Date: Media Contact: Release Date: Julie Petersen, (803) 952-7690 May 15, 2009 julie.petersen@srs.gov DOE Sets Energy Savings Contract in Motion for New Renewable Energy Fueled Plant at SRS New Steam Production Biomass Plant and Boilers to Yield Public Health, Environmental, and Cost Savings Benefits

498

SR201003.docx  

NLE Websites -- All DOE Office Websites (Extended Search)

January 12, 2010 January 12, 2010 james-r.giusti@srs.gov John Lindsay, SRR, (803) 208-6253 john02lindsay@srs.gov SRS Tank 5 Moves to Closure Aiken, SC -- American Recovery and Reinvestment Act funding is helping accelerate tank closures at the Department of Energy's (DOE) Savannah River Site's F Tank Farm. The project is receiving $1.4 million in Recovery Act funding, which will allow for important steps that are necessary to moving the tank to closure.

499

SR201002.docx  

NLE Websites -- All DOE Office Websites (Extended Search)

John Lindsay, SRR, (803) 208-6253 John Lindsay, SRR, (803) 208-6253 john02lindsay@srs.gov Recovery Act Funding Accelerates Tank Closure at the Savannah River Site Aiken, SC (Dec. 9) - "Innovate and accelerate safely" describes the upgrade work underway at H Area Waste Tank 13, an American Recovery and Reinvestment Act project being performed by Savannah River Remediation LLC ( SRR). Placed in service in 1956, Tank 13 is an underground waste storage tank with a capacity

500

sr0927.docx  

NLE Websites -- All DOE Office Websites (Extended Search)

8, 2009 8, 2009 james-r.giusti@srs.gov Paivi Nettamo, SRNS, (803) 952-6938 paivi.nettamo@srs.gov Job Information And Other Training Opportunities Available Through Road To Recovery Tour Tour visiting communities across South Carolina and Northeast Georgia Aiken, SC (Oct. 7) - An innovative effort to share information on the Recovery Act at Savannah River Site (SRS) is underway. The U.S. Department of Energy (DOE) site's