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Sample records for xx xx xx

  1. DOE O XXX.X DRAFT XX-XX-XX

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

    DOE O XXX.X DRAFT XX-XX-XX 4 DOE O XXX.X DRAFT XX-XX-XX DOE O XXX.X 3 DRAFT XX-XX-XX DOE O XXX.X Appendix A DRAFT XX-XX-XX A- 1 (and A-2) DOE O XXX.X Attachment 1 DRAFT XX-XX-XX Page 1 (and Page 2) Appendix E DOE O 251.1C E- 6 1-15-09 DOE O XXX.X Attachment 2 DRAFT XX-XX-XX Page 1 (and Page 2) draftDOE O XXX.XdraftDOE O XXX.Xu.s. Department of EnergyORDER draft DOE O XXX.X draft DOE O XXX.X Washington, DC Approved: XX-XX-XXXX SUBJECT: title PURPOSE. (Define the program or subject matter and its

  2. CAP XX Pty Ltd | Open Energy Information

    Open Energy Info (EERE)

    Zip: NSW 2066 Product: Australia-based designer and manufacturer of high power density supercapacitors. References: CAP-XX Pty Ltd1 This article is a stub. You can help...

  3. WEATHERIZATION PROGRAM NOTICE 16-XX EFFECTIVE DATE:

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

    WEATHERIZATION PROGRAM NOTICE 16-XX EFFECTIVE DATE: SUBJECT: WEATHERIZATION OF RENTAL UNITS - Applicable to single family and multifamily dwellings PURPOSE: To provide Grantees with updated guidance on weatherizing rental units in the Weatherization Assistance Program (WAP). DOE has answered specific questions from Grantees related to the weatherization of rental units, whether single family building or multifamily dwellings, over a number of years. However, the responses to these questions have

  4. RELAP5-3D V. 4.X.X

    Energy Science and Technology Software Center (OSTI)

    000191MLTPL01 NON-NRC FUNDED RELAP5-3D VERSION 4.x.x SOFTWARE REACTOR EXCURSION AND LEAK ANALYSIS PACKAGE - THREE DIMENSIONAL

  5. WEATHERIZATION PROGRAM NOTICE 16-XX EFFECTIVE DATE: SUBJECT: MULTIFAMILY WEATHERIZATION

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

    6-XX EFFECTIVE DATE: SUBJECT: MULTIFAMILY WEATHERIZATION PURPOSE: To provide Grantees with consolidated guidance on previously issued Weatherization Program Notices (WPNs) on weatherizing multifamily buildings in the Weatherization Assistance Program (WAP). This supersedes WPN 10-7 and WPN 11-9 SCOPE: The provisions of this guidance apply to Grantees applying for financial assistance under the Department of Energy (DOE) WAP. LEGAL AUTHORITY: Title IV, Energy Conservation and Production Act, as

  6. DOE G 441.1-XX Control and Release of Property with Residual...

    Office of Environmental Management (EM)

    April 4, 2002 FROM: STEPHEN M. SMITH, DEPUTY DIRECTOR OFFICE OF CORPORATE SOLUTIONS, ME-80 TO: DIRECTIVES POINTS OF CONTACT SUBJECT: DRAFT DOE G 441.1-XX, CONTROL AND RELEASE OF ...

  7. Long-distance entanglement and quantum teleportation in XX spin chains

    SciTech Connect (OSTI)

    Campos Venuti, L.; Giampaolo, S. M.; Illuminati, F.; Zanardi, P.

    2007-11-15

    Isotropic XX models of one-dimensional spin-1/2 chains are investigated with the aim to elucidate the formal structure and the physical properties that allow these systems to act as channels for long-distance, high-fidelity quantum teleportation. We introduce two types of models: (i) open, dimerized XX chains, and (ii) open XX chains with small end bonds. For both models we obtain the exact expressions for the end-to-end correlations and the scaling of the energy gap with the length of the chain. We determine the end-to-end concurrence and show that model (i) supports true long-distance entanglement at zero temperature, while model (ii) supports 'quasi-long-distance' entanglement that slowly falls off with the size of the chain. Due to the different scalings of the gaps, respectively exponential for model (i) and algebraic in model (ii), we demonstrate that the latter allows for efficient qubit teleportation with high fidelity in sufficiently long chains even at moderately low temperatures.

  8. XX 08

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

    to protect the area from further damage. Northwest ratepayers will absorb the costs in electric rates, and BPA is offering a reward of up to 25,000 for information that leads...

  9. SF 6432-TM (xx-xx-xx) Time Material

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

    SCR and SDR (if one is identified in the contract,) within 72 hours of the Contractor's learning of the situation. The Contractor shall cooperate with Sandia and provide...

  10. SF6432-EI (xx-xx-xx) Educational Institutions

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

    ... prior to any attempts to enter a government site as shown ... premises are subject to search. (e) Contractor shall ... Control : SF 6432-EI Title: Standard Terms & Conditions for ...

  11. SF 6432-TM (xx-xx-xx) Time Material

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

    Department Release Date: 11/17/15 Page 1 of 25 Printed copies of this document are uncontrolled. Retrieve latest version electronically. SANDIA CORPORATION SF 6432-TM (11/2015) Section II STANDARD TERMS AND CONDITIONS FOR TIME AND MATERIALS LABOR- HOUR CONTRACTS THE FOLLOWING CLAUSES APPLY TO THIS CONTRACT AS INDICATED UNLESS SPECIFICALLY DELETED, OR EXCEPT TO THE EXTENT THEY ARE SPECIFICALLY IDENTIFIED AS BEING CHANGED SUPPLEMENTED OR AMENDED IN WRITING ISSUED BY THE SANDIA CONTRACTING

  12. SF6432-EI (xx-xx-xx) Educational Institutions

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

    Department Release Date: 11/17/15 Page 1 of 25 Printed copies of this document are uncontrolled. Retrieve latest version electronically. SANDIA CORPORATION SF 6432-El (11/2015) SECTION II STANDARD TERMS AND CONDITIONS FOR ALL COST-REIMBURSEMENT OR ORDERING AGREEMENTS WITH EDUCATIONAL INSTITUTIONS THE FOLLOWING CLAUSES APPLY TO THIS CONTRACT AS INDICATED UNLESS SPECIFICALLY DELETED, OR EXCEPT TO THE EXTENT THEY ARE SPECIFICALLY SUPPLEMENTED OR AMENDED IN WRITING IN THE COVER PAGE OR SECTION I.

  13. SF 6432-TM (xx-xx-xx) Time Material

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

    costs are consistent with subparagraph (3) below. Control : SF 6432-TM Title: Standard Terms and Conditions for Time and Materials Labor-Hour Contracts Owner: Procurement Policy &...

  14. SF 6432-TM (xx-xx-xx) Time Material

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

    costs are comprised of indirect costs, including Control : SF 6432-TM Title: Standard Terms and Conditions for Time and Materials Labor-Hour Contracts Owner: Procurement Policy...

  15. SF 6432-TM (xx-xx-xx) Time Material

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

    ... National Fire Protection Association (NFPA), Standard of Mechanical Engineers (ASME), ... APPLY TO CONTRACTS AT ANY VALUE FAR 52.203-99 Prohibition of Contracting with Entities ...

  16. SF6432-EI (xx-xx-xx) Educational Institutions

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

    ... National Fire Protection Association (NFPA), Standard of Mechanical Engineers (ASME), ... APPLY TO CONTRACTS OF ANY VALUE FAR 52.203-99 Prohibition on Contracting with Entities ...

  17. SF6432-EI (xx-xx-xx) Educational Institutions

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

    ... prior to any attempts to enter a government site as shown ... premises are subject to search. (e) Contractor will ... SF 6432-EI Title: Standard Terms & Conditions for ...

  18. SF 6432-TM (xx-xx-xx) Time Material

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

    ... as those materials which enter directly into the end ... SF 6432-TM Title: Standard Terms and Conditions for Time and ... premises are subject to search. (e) Contractor shall ...

  19. SF6432-EI (xx-xx-xx) Educational Institutions

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

    ... SF 6432-EI Title: Standard Terms & Conditions for ... Any Contractor personnel who will enter a government site to ... premises are subject to search. (e) Contractor shall ...

  20. SF 6432-TM (xx-xx-xx) Time Material

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

    ... as those materials which enter directly into the end ... Control : SF 6432-TM Title: Standard Terms and Conditions ... premises are subject to search. (e) Contractor will ...

  1. SF6432-EI (xx-xx-xx) Educational Institutions

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

    operations in flight or afloat, which are Control : SF 6432-EI Title: Standard Terms & Conditions for Educational Institutions Owner: Procurement Policy & Quality Dept Release...

  2. SF6432-EI (xx-xx-xx) Educational Institutions

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

    laboratory procedures, loading or Control : SF 6432-EI Title: Standard Terms & Conditions for Educational Institutions Owner: Procurement Policy Department Release Date:...

  3. Energy levels, oscillator strengths, and radiative rates for Si-like Zn XVII, Ga XVIII, Ge XIX, and As XX

    SciTech Connect (OSTI)

    Abou El-Maaref, A.; Allam, S.H.; El-Sherbini, Th.M.

    2014-01-15

    The energy levels, oscillator strengths, line strengths, and transition probabilities for transitions among the terms belonging to the 3s{sup 2}3p{sup 2}, 3s3p{sup 3}, 3s{sup 2}3p3d, 3s{sup 2}3p4s, 3s{sup 2}3p4p and 3s{sup 2}3p4d configurations of silicon-like ions (Zn XVII, Ga XVIII, Ge XIX, and As XX) have been calculated using the configuration-interaction code CIV3. The calculations have been carried out in the intermediate coupling scheme using the BreitPauli Hamiltonian. The present calculations have been compared with the available experimental data and other theoretical calculations. Most of our calculations of energy levels and oscillator strengths (in length form) show good agreement with both experimental and theoretical data. Lifetimes of the excited levels have also been calculated. -- Highlights: We have calculated the fine-structure energy levels of Si-like Zn, Ga, Ge and As. The calculations are performed using the configuration interaction method (CIV3). We have calculated the oscillator strengths, line strengths and transition rates. The wavelengths of the transitions are listed in this article. We also have made comparisons between our data and other calculations.

  4. A :netao '?X,S vrtttcn (XX-x-162) to ;,r+ allison dascrllltnPr a m?neral 7m~rM o

    Office of Legacy Management (LM)

    A :netao '?X,S vrtttcn (XX-x-162) to ;,r+ allison dascrllltnPr a m?neral 7m~rM of metallurKic.%l, fabrication, and nhysicnf stuJles whtch owht to be carried out as lntcnsively as -loseible stnrtinr: imiaedintely, in order to Tmvide information for the desicn of efficient methods of using atomic noxer. This nrescnt memo becomes more snecific in q entionini: lines of vmr!: which the idetholis and iinterlals Section believes to bc of lnortence. It also tells names of neonle and olaces where useful

  5. Microsoft Word - xx xx 13 Midway pole replacement news release...

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

    local utilities. The public meeting is: Wednesday, Feb. 20, 2013 4 p.m. to 7 p.m. Moxee City Hall 255 W. Seattle Ave. Moxee, WA 98936 Because there will not be a formal...

  6. Form Reclearance Approval Expires: XX/XX/XXXX

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

    collection of information unless the form displays a valid OMB number. U.S. Department of Energy U.S. Energy Information Administration Washington, DC 20585 Form EIA-858 Uranium...

  7. Non-Ideal p-n junction Diode of Sb{sub x}Se{sub 1-x}(x = 0.4, 0.5, 0.6, 0.7) Thin Films

    SciTech Connect (OSTI)

    Mustafa, Falah I.; Gupta, Shikha; Goyal, N.; Tripathi, S. K.

    2011-12-12

    We have made diodes consisting of the same alloy i.e. Sb{sub x}Se{sub 1-x}(x = 0.4, 0.5, 0.6 and 0.7), but change the concentration of Sb metal from 40% to 70% atomic weight percentage. It is observed from the Hall measurements that the nature of charge carriers have changed from p- to n-type at x = 0.6 for Sb{sub x}Se{sub 1-x}. We have measured I-V characteristics of four p-n junction diodes i.e. p-Sb{sub 2}Se{sub 3}/n-Sb{sub 3}Se{sub 2}, p-Sb{sub 2}Se{sub 3}/n-Sb{sub 7}Se{sub 3}, p-SbSe/n-Sb{sub 3}Se{sub 2}, p-SbSe/n-Sb{sub 7}Se{sub 3}. From the I-V plots we have calculated the parameters as built-in voltage (V{sub bi}), forward resistance (R{sub f}), ideal factor (n), saturation current (I{sub o}), breakdown current (I{sub Bd}) and breakdown voltage (V{sub Bd}).

  8. Slide 1

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

    16XX 071620XX-0826XX 071620XX-0728XX 072820XX-0802XX 080220XX-0804XX JUN XX JUL XX AUG XX SEP X Page 3 Assessing Schedule Position (Float Analysis) Activity...

  9. OMB No. XXXX-XXXX Expiration Date: XX/XX/XXXX

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

    888 Total 999 Pipeline stocks must be greater than or equal to stocks in tanks and underground storage in Part 7. Finished Motor Gasoline Pipeline Stocks + Gulf Coast (PADD 3)...

  10. OMB No. XXXX-XXXX Expiration Date: XX/XX/XXXX

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

    per Stream Day Quantity Used As Fuel or Feedstock Trucks Atmospheric Crude Oil Distillation Capacity PART 5. ATMOSPHERIC CRUDE OIL DISTILLATION CAPACITY AS OF JANUARY 1 1...

  11. OMB No. XXXX-XXXX Expiration Date: XX/XX/XXXX

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

    same, only complete the physical address. For the PC Electronic Data Reporting Option (PEDRO) software, call (202) 586-9659. (See Form instructions, pg 1.) Comments: Identify any...

  12. OMB No. XXXX-XXXX Expiration Date: XX/XX/XXXX

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

    PART 1. RESPONDENT IDENTIFICATION DATA For the PC Electronic Data Reporting Option (PEDRO) software, call (202) 586-9659. (See Form instructions, pg 1.) OOG.SURVEYS@eia.doe.gov...

  13. OMB No. XXXX-XXX Expiration Date: XX/XX/XXXX

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

    BARGE, AND RAIL MOVEMENTS ACTIVITY SUMMARY For the PC Electronic Data Reporting Option (PEDRO) software, call (202) 586-9659. (See Form instructions, pg 1) Mailing Address of...

  14. OMB No. XXXX-XXXX Expiration Date: XX/XX/XXXX

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

    OF THE MONTH (Barrels per Calendar Day) For the PC Electronic Data Reporting Option (PEDRO) software, call (202) 586-9659. (See Form instructions, pg 1.) Mailing Address of...

  15. OMB No. XXXX-XXXX Expiration Date: XX/XX/XXXX

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

    same, only complete the physical address. For the PC Electronic Data Reporting Option (PEDRO) software, call (202) 586-9659. (See Form instructions, pg 1) Month A completed form...

  16. OMB No. XXXX-XXXX Expiration Date: XX/XX/XXXX

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

    using one of the following methods: For the PC Electronic Data Reporting Option (PEDRO) software, call (202) 586-9659. (See Form instructions, pg 1) Enter barrels to the...

  17. OMB No. XXXX-XXXX Expiration Date: XX/XX/XXXX

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

    day following the end of the report month. For the PC Electronic Data Reporting Option (PEDRO) software, call (202) 586-9659. (See Form instructions, pg 1.) Month Forms may be...

  18. OMB No. XXXX-XXXX Expiration Date: XX/XX/XXXX

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

    comment from another, press ALT+ENTER.) For the PC Electronic Data Reporting Option (PEDRO) software, call (202) 586-9659. (See Form instructions, pg 1.) Forms may be submitted...

  19. OMB No. XXXX-XXXX Expiration Date: XX/XX/XXXX

    Gasoline and Diesel Fuel Update (EIA)

    Product Code Input Production Stocks End of Week Oxygenates, Renewable Fuels, and Hydrocarbon Gas Liquids*: 003 Hydrocarbon Gas Liquids* 242 Consumer and Export Grade Propane...

  20. Microsoft Word - xx xx 13 Bill Drummond sworn in as administrator...

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

    and executive management to the agency. Before joining BPA, Drummond had managed Western Montana Electric Generating and Transmission Cooperative in Missoula, Mont., for...

  1. Microsoft Word - XX 13 Colville Tribe to celebrate opening of...

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

    will significantly boost the availability of chinook salmon for the tribe and for sport fishing in the Columbia River as well as reintroduce spring chinook to the Okanogan...

  2. NAP-XX Defense Programs Business Requirements and Processes Manual

    National Nuclear Security Administration (NNSA)

    Programs http://nnsa.energy.gov printed copies are uncontrolled SUPPLEMENTAL DIRECTIVE Approved: 2-25-16 DEFENSE PROGRAMS BUSINESS PROCESS SYSTEM (DPBPS) NATIONAL NUCLEAR SECURITY ADMINISTRATION Office of Defense Programs NNSA SD 452.3-1A THIS PAGE INTENTIONALLY LEFT BLANK NNSA SD 452.3-1A 1 2-25-16 DEFENSE PROGRAMS BUSINESS PROCESS SYSTEM 1. PURPOSE. This supplemental directive (SD) establishes the Defense Programs Business Process System (DPBPS) Portal as the mechanism for implementing DOE

  3. Microsoft Word - XX 15 BPA moving forward with Hooper Springs...

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

    CONTACT: Doug Johnson, 503-230-5840503-230-5131 BPA selects final path for its Hooper Springs Transmission project Portland, Ore. - The Bonneville Power Administration has decided...

  4. Microsoft Word - XX 13 Public scoping Walla Walla Basin Spring...

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

    existing adult holding and spawning facility on the South Fork Walla Walla River near Milton-Freewater in Umatilla County, Ore. This is the latest project in an ongoing...

  5. Microsoft Word - XX 13 Science and education grants offered by...

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

    gotoEducationGrants . BPA's education program provides free presentations and information to K-12 schools in our region to help students achieve energy literacy, and to...

  6. Microsoft Word - XX 13 IG report statement 10-2013

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

    particularly against those who raise concerns. As we move forward to rebuild our human resource capabilities, all of us at BPA will continue to serve our core mission by...

  7. ANL-78-XX-95 Energy Level Structure and Transition Probabilities

    Office of Scientific and Technical Information (OSTI)

    III. Treatment of Experimental Data 8 Fig. 2. Crystal-field Parameters for Ln 3+ :LaCl 3 and Ln 3+ :LaF 3 13 IV. Energy Level Correlations - Survey of Experimental Data 14 1. f 2 ...

  8. Microsoft Word - XX 14 Delwiche and Andrews appointments FINAL...

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

    for BPA's power planning and scheduling functions; generation asset management; power contracts and rates; power purchases and acquisitions; and business relationships with...

  9. Microsoft Word - XX 13 Coyote Creek land acquisition provides...

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

    Wingert, 503-230-4140 or 503-230-5131 Rare wet prairie, wildlife corridor protected by land acquisition in Willamette Valley Portland, Ore. - Building upon a well-established...

  10. Microsoft Word - XX 13 HRD dep adm release (3).doc

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

    capital management function and ensure it has high performing compliance and governance functions. First, Brian E. Carter, currently the CivilianHuman Resources Officer for the...

  11. SECTION L … ATTACHMENT xx … KEY PERSONNEL AND CRITICAL WORK...

    National Nuclear Security Administration (NNSA)

    the proposed duties and responsibilities of the proposed position. 8. Professional credentials that are relevant to the individual's proposed position. 9. Signed 3-Year Letter of ...

  12. Microsoft Word - xx 13 Treasury Payment Oct 2013 Final Oct 4...

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

    to Energy Northwest projects. Energy Northwest develops, owns and operates a diverse mix of electricity generating resources, including the Northwest's only nuclear generating...

  13. A :netao '?X,S vrtttcn (XX-x-162) to ;,r+ allison dascrllltnPr...

    Office of Legacy Management (LM)

    XeJuction an& nurification methods for the metal should be sou&t ano the 12 usefulnas? oiL:stillation should be Determined. Sneddiw' s work on' 9e reduct.Zoa and- : castin? 2nd ...

  14. Microsoft Word - XX 14 15 minute scheduling release FINAL.docx

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

    with abundant clean energy resources, led by the hydropower system," said John Prescott, president and CEO of PNGC Power. "BPA has been proactive in taking steps to increase...

  15. Microsoft PowerPoint - xxDraft SEIS PUBLIC MEETING PRESENTATION...

    National Nuclear Security Administration (NNSA)

    Zircaloy Tritium Getter Nickel Plate Lithium Aluminate Pellets Zircaloy Liner Lithium Aluminate Pellets Ceramic material containing Lithium-6, the active ingredient that transmutes ...

  16. Microsoft Word - NRAP-TRS-III-0XX-2016_A Users Guide to DFNGen...

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

    ... A User's Guide to DFNGen 12 The second group of options involves saving DFNGen files. 11 The File>Save command will save the current data set using the current file name and ...

  17. Microsoft Word - XX 14 Connolly named VP Gen - Asset Mgmt FINAL...

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

    0 14 BONNEVILLE POWER ADMINISTRATION FOR IMMEDIATE RELEASE Monday, Oct. 6, 2014 CONTACT: Doug Johnson, 503-230-5840503-230-5131 Kieran Connolly named BPA vice president of...

  18. THE ANGLO-AUSTRALIAN PLANET SEARCH. XX. A SOLITARY ICE-GIANT PLANET ORBITING HD 102365

    SciTech Connect (OSTI)

    Tinney, C. G.; Wittenmyer, Robert A.; Bailey, Jeremy; Butler, R. Paul; Jones, Hugh R. A.; O'Toole, Simon; Carter, Brad D.

    2011-02-01

    We present 12 years of precision Doppler data for the very nearby G3 star HD 102365, which reveals the presence of a Neptune-like planet with a 16.0 M{sub Earth} minimum mass in a 122.1 day orbit. Very few 'Super Earth' planets have been discovered to date in orbits this large and those that have been found reside in multiple systems of between three and six planets. HD 102365 b, in contrast, appears to orbit its star in splendid isolation. Analysis of the residuals to our Keplerian fit for HD 102365 b indicates that there are no other planets with minimum mass above 0.3 M{sub Jup} orbiting within 5 AU and no other 'Super Earths' more massive than 10 M{sub Earth} orbiting at periods shorter than 50 days. At periods of less than 20 days these limits drop to as low as 6 M{sub Earth}. There are now 32 exoplanets known with minimum mass below 20 M{sub Earth}, and interestingly the period distributions of these low-mass planets seem to be similar whether they orbit M-, K-, or G-type dwarfs.

  19. Microsoft Word - XX 15 Jensen named BPA general counsel (3) FINAL...

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

    in creating national guidelines for power marketing administrations in states where marijuana sales are lawful under state statutes. She also instituted new processes that enable...

  20. SECTION L … ATTACHMENT xx … KEY PERSONNEL AND CRITICAL WORK AREA PERSONNEL RESUME ELEMENTS

    National Nuclear Security Administration (NNSA)

    2] Attachment L-3a KEY PERSONNEL RESUME ELEMENTS 1. Name of Offeror: 2. Name of Key Person: 3. Proposed Position: 4. Duties and Responsibilities in Proposed Position including elements of SOW assigned: 5. Chronological Work History: Start with current position and work backwards. A. Name and Address of Firm: B. Position(s) Held: C. Dates of Employment: D. General Summary of Responsibilities: Provide a concise description of major duties and responsibilities for each job relevant to the proposed

  1. Microsoft PowerPoint - xxDraft SEIS PUBLIC MEETING PRESENTATION 9 sep 2014 [Compatibility Mode]

    National Nuclear Security Administration (NNSA)

    Public Hearings on Draft SEIS September 9-10, 2014 National Nuclear Security Administration (NNSA) Department of Energy (DOE) 1 Supplemental Environmental Impact Statement (SEIS) for the Production of Tritium in a Commercial Light Water Reactor Background * NNSA is the federal agency responsible for providing the nation with nuclear weapons and ensuring those weapons remain safe and reliable * Tritium is a radioactive isotope of hydrogen and is an essential component of every weapon in the

  2. Microsoft Word - XX 13 New book reveals drama behind your light...

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

    evolving environmental values and building out the regional power grid. Filled with spectacular photographs, it tells the stories vividly through the lens of BPA, the federal...

  3. Building Interoperability

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

    Page 3 20XX-XX-XX Market Place Needs - Data Fatigue Carbon Emissions Alternative Energy Demand Response Distributed Power IAQ Personal UI Mobile Cloud IT Convergence Charging...

  4. Appendix A, Sample Register REGISTER XY CONTRACTING OFFICE Initiation

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

    Number Solicitation Number Business Instrument Number 08302011 XX REQ- 11XX12345 DE-SOL- XX12345 DE- XY12345 AmendmentModification REQ- 11XX12345.000 Modification 001...

  5. Draft DOE P 226

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

    Extension of DOE N XXX.X (Title) Synopsis Summary Background: The Office of XXXXXXXXXXXX (XX) is requesting a 1-year extension to DOE N XXX.X, (Title), dated XX-XX-XX. The Notice ...

  6. Microsoft Word - NRAP-TRS-III-0XX-2016_A Users Guide to DFNGen 2016.final.docx

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

    A User's Guide to DFNGen 28 January 2016 Office of Fossil Energy NRAP-TRS-III-001-2016 Disclaimer This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents

  7. Experimental investigation of factors limiting slow axis beam quality in 9xx nm high power broad area diode lasers

    SciTech Connect (OSTI)

    Winterfeldt, M. Crump, P.; Wenzel, H.; Erbert, G.; Trnkle, G.

    2014-08-14

    GaAs-based broad-area diode lasers are needed with improved lateral beam parameter product (BPP{sub lat}) at high power. An experimental study of the factors limiting BPP{sub lat} is therefore presented, using extreme double-asymmetric (EDAS) vertical structures emitting at 910?nm. Continuous wave, pulsed and polarization-resolved measurements are presented and compared to thermal simulation. The importance of thermal and packaging-induced effects is determined by comparing junction -up and -down devices. Process factors are clarified by comparing diodes with and without index-guiding trenches. We show that in all cases studied, BPP{sub lat} is limited by a non-thermal BPP ground-level and a thermal BPP, which depends linearly on self-heating. Measurements as a function of pulse width confirm that self-heating rather than bias-level dominates. Diodes without trenches show low BPP ground-level, and a thermal BPP which depends strongly on mounting, due to changes in the temperature profile. The additional lateral guiding in diodes with trenches strongly increases the BPP ground-level, but optically isolates the stripe from the device edges, suppressing the influence of the thermal profile, leading to a BPP-slope that is low and independent of mounting. Trenches are also shown to initiate strain fields that cause parasitic TM-polarized emission with large BPP{sub lat}, whose influence on total BPP{sub lat} remains small, provided the overall polarization purity is >95%.

  8. MEMORANDUM FOR:

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

    xx-xx-xxxx Expires: xx-xx-xxxx SUBJECT: EXTENSION OF DOE N XXX.X, (Title) Effective immediately, DOE N XXX.X, (Title), dated XX-XX-XX, is extended to XX-XX-XXXX, or until superseded. The requirements of DOE N XXX.X (state where the requirements will be incorporated, i.e., an Order, rule, etc.). If you need additional information, contact (name) at (phone number). BY ORDER OF THE SECRETARY OF ENERGY: NAME Deputy Secretary AVAILABLE ONLINE AT: INITIATED BY: www.directives.doe.gov Office of

  9. Chapter 1

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

    ... The Office of Xxxxxxxxxx has scheduled a (Event Type, i.e., holiday party) on (Month Day, Year) at the Forrestal Building in Rm. xx-xxx from x:xx to x:xx ampm. I am therefore ...

  10. 71-100-01d

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    DUKE UNIVERSITY FREE ELECTRON LASER LABORATORY LaSalle Street Extension, Duke University, Durham, NC 27708 Matthew admin 1282009 660-2694 XX-XX-XXX-XX C C D D H H K L 25 26 5004 ...

  11. MEMORANDUM FOR:

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

    directives (is/are) canceled: DOE G, Title, dated XX-XX-XX (Author: email; phone number) DOE G, Title, dated XX-XX-XX (Author: email; phone number) Cancellation of these directives (this directive) does not relieve the Department or its contractors from complying with applicable Federal laws and regulations pertaining to the canceled directives. Inquiries should be addressed to the point(s) of contact listed with the directive(s). For information about the Departmental Directives Program,

  12. NON-NRC FUNDED RELAP5-3D VERSION 4.x.x SOFTWARE REACTOR EXCURSION AND LEAK ANALYSIS PACKAGE - THREE DIMENSIONAL

    SciTech Connect (OSTI)

    2012-03-26

    The RELAP5-3D Version 3.x code has been developed for best-estimate transient simulation of nuclear reactor coolant systems during postulated accidents. The code models the coupled behavior of the reactor coolant system and the core for loss-of-coolant accidents and operational transients such as anticipated transient without scram, loss of offsite power, loss of feedwater, and loss of flow. A generic modeling approach is used that permits simulating a variety of thermal hydraulic systems including pressurized water reactors, boiling water reactors, Soviet-designed reactors, heavy water reactors, gas-cooled reactors, liquid metal and molten salt cooled reactors, and even fusion reactors. Numerical models include multi-dimensional hydrodynamics, 1- and 2-D heat transfer in metal walls, 0-, 1-, 2-, and 3-D neutron kinetics, trips, and control systems. Secondary system components are included to permit modeling of plant controls, turbines, condensers, and secondary feedwater systems.

  13. ASME N511-19XX, Standard for periodic in-service testing of nuclear air treatment, heating, ventilating and air conditioning systems

    SciTech Connect (OSTI)

    1997-08-01

    A draft version of the Standard is presented in this document. The Standard covers the requirements for periodic in-service testing of nuclear safety-related air treatment, heating, ventilating, and air conditioning systems in nuclear facilities. The Standard provides a basis for the development of test programs and does not include acceptance criteria, except in cases where the results of one test influence the performance of other tests. The Standard covers general inspection and test requirements, reference values, inspection and test requirements, generic tests, acceptance criteria, in-service test requirements, testing following an abnormal incident, corrective action requirements, and quality assurance. Mandatory appendices provide a visual inspection checklist and four test procedures. Non-mandatory appendices provide additional information and guidance on mounting frame pressure leak test procedure, corrective action, challenge gas substitute selection criteria, and test program development. 8 refs., 10 tabs.

  14. NON-NRC FUNDED RELAP5-3D VERSION 4.x.x SOFTWARE REACTOR EXCURSION AND LEAK ANALYSIS PACKAGE - THREE DIMENSIONAL

    Energy Science and Technology Software Center (OSTI)

    2012-03-26

    The RELAP5-3D Version 3.x code has been developed for best-estimate transient simulation of nuclear reactor coolant systems during postulated accidents. The code models the coupled behavior of the reactor coolant system and the core for loss-of-coolant accidents and operational transients such as anticipated transient without scram, loss of offsite power, loss of feedwater, and loss of flow. A generic modeling approach is used that permits simulating a variety of thermal hydraulic systems including pressurized watermore » reactors, boiling water reactors, Soviet-designed reactors, heavy water reactors, gas-cooled reactors, liquid metal and molten salt cooled reactors, and even fusion reactors. Numerical models include multi-dimensional hydrodynamics, 1- and 2-D heat transfer in metal walls, 0-, 1-, 2-, and 3-D neutron kinetics, trips, and control systems. Secondary system components are included to permit modeling of plant controls, turbines, condensers, and secondary feedwater systems.« less

  15. MEMORANDUM FOR:

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    Washington, D.C. Approved: XX-XX-20XX Expires: XX-XX-20XX SUBJECT: TITLE 1 purpose . (Define the program or subject matter and its purpose/goals/objectives. Goals should be stated in simple, straightforward language that describes the results to be achieved by issuance of the Notice.) 2 CANCELLATION . DOE N XXX.X, Title, dated X-X-XX. (When the Notice replaces another directive currently in use, the canceled directive [i.e., Policy, Order, Notice, Manual, or Guide] is identified by number,

  16. MEMORANDUM FOR:

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    directive(s) (is/are) canceled: DOE (O, M, P, N), Title, dated XX-XX-XX (Author: email; phone number) DOE (O, M, P, N), Title, dated XX-XX-XX (Author: email; phone number) Cancellation of these directives (this directive) does not relieve the Department or its contractors from complying with applicable Federal laws and regulations pertaining to the canceled directives. Inquiries should be addressed to the point(s) of contact listed with the directive(s). For information about the Departmental

  17. RECS Propane Usage Form_v1 (Draft).xps

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

    Type of Fuel Sold was: PPropane BButane OOther Enter the Price per Unit of Measure XXX.XX X.XX (select one) P B O MMDDYY Page 1 of ...

  18. EERE Program Management Initiative (PMI) Brochure

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

    ... Program and Project Manager Performance Plans John Doe John Doe John Doe xxx-xx-xxxx EERExxxxxxxForrestalEE-xx EERE Program Management Initiative 8 December 2003 EERE Program ...

  19. The original of this document contains information which is subject...

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    ... EPSs affected by the EPS Final Rule are in XXX XXXXXXXX XX XXXXX, XXXXX XXXXX, XXXXXXXX, ... products, Tektronix requests an additional XXX XX months to come into compliance with the ...

  20. DOE Acquisition Guide ...

    Energy Savers [EERE]

    ... handling of employee morale problems, etc. Planning: Adequate, quality, innovative, ... date Complete the 20XX Biennial Emergency Management Exercise. Ref: ...

  1. Guide Title

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    DOE G XXX.X-X xx-xx-20XX Guide Title [This Guide describes acceptable, but not mandatory means for complying with requirements. Guides are not requirements documents and are not to be construed as requirements in any audit or appraisal for compliance with associated rule or directives.] U.S. Department of Energy Office of Primary Interest FOREWORD (optional) THE FOREWORD SHOULD DESCRIBE THE DOE REQUIREMENTS, DIRECTIVES, OR RULES THAT MAY BE SATISFIED BY IMPLEMENTING THIS GUIDE. CONTENTS

  2. TO: INGRID KOLB

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    (NOTE: Per Office of the Executive Secretariat procedures, please use Calibri, 12 point font for this action memorandum) TO: INGRID KOLB DIRECTOR OFFICE OF MANAGEMENT FROM: SECRETARIAL OFFICER'S NAME TITLE SUBJECT: DIRECTIVES CERTIFICATION STATEMENT DOE (number, title, dated xx-xx-xx) has been reviewed by my organization and deemed to be in compliance with related Departmental Directives, Secretarial Delegations, organizational structure, budget guidelines, regulations, standards, OMB guidance,

  3. FEMP ESPC Project Development Resource Guide

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

    ... TO: All DOE ESPC IDIQ Contract Holders DATE: XX FROM: Contracting Officer Agency Contact Info SUBJECT: Notice of Opportunity (NOO) for Energy Savings Performance Contract (ESPC) ...

  4. Sample Contract Language for Construction Using Energy-Efficient...

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

    ... Method of Assessment - Random Sampling. (3) Performance Threshold - Up to 100 compliance, assuming life cycle cost efficient. Section H - Special Contract Requirements H-xx. ...

  5. Notice of Intent to Issue DOE N 314.1, DOE-Flex: DOE's Telework Program while Developing a Successor Order (5-6-11)

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2011-05-06

    This is to develop DOE N 3XX, which will establish the requirements and responsibilities for the Department's telework/flexiplace program.

  6. No.","Financial and Activity Report (sheet 1 of 2) Version 1...

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

    Department of Defense--Military","(005-08) Department of Agriculture: ... ","(007-XX) Department of Defense--Military","(12-3504 2010 2011) Special ...

  7. No.","Financial and Activity Report (sheet 1 of 2) Version 1...

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

    Department of Defense--Military","(005-08) Department of Agriculture: ... ","(007-XX) Department of Defense--Military","(12-3540 2009 2010) State Child ...

  8. InGaN Quantum Dot Fabrication using Quantum Size Controlled Photoelect...

    Office of Scientific and Technical Information (OSTI)

    X1 X-X" X-* X-* X- - -X-X XJ x-S' X- - -.* x- X-J* X- - -< X- -X- X- - X- -J- X- (tm) ' X-- - xjr x- - -X X-A * XJ x- - -.* X-X-X X---I* X-J* X->* X- X- - - ...

  9. Clearance of Real and Personal Property Under New DOE Radiation...

    Office of Environmental Management (EM)

    ... limits * Pre-approved limits included are: -radium-226 (or thorium 230) soil concentrations -radium 228 (or thorium-232) soil concentrations -surface guidelines in G 441.1-xx ...

  10. NREL Technology Partnership Participant Data Sheet

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    by MRINREL, foreign nationals? If so, please provide the country of citizenship and immigration status (Green Card, H1B, F1Visa or etc.) of each foreign national. F12XX-E(012006)...

  11. Notification of Planned 230kV Outage at Potomac River Generating...

    Energy Savers [EERE]

    Subject: Notification of Planned 230kV Outage at Potomac River Generating Station To ... The next planned outage on 23106 high voltage circuit between xxxxxxx xx xxxx and ...

  12. DEACTIVATION COMPLETION AND TURNOVER Deactivation Completion...

    Office of Environmental Management (EM)

    ... records the stated condition will be placed in the space or system file folder. WP-xx-xxx Work Plans written to perform activities to support closeout of specific end-points or ...

  13. Metal to Insulator Transition on the N = 0 Landau Level in Graphene

    SciTech Connect (OSTI)

    Zhang, L.; Zhang, Y.; Khodas, M.; Valla, T.; Zaliznyak, I.A.

    2010-07-23

    The magnetotransport in single layer graphene has been experimentally investigated in magnetic fields up to 18 T as a function of temperature. A pronounced T dependence is observed for T {approx}< 50 K, which is either metallic, or insulating, depending on the filling factor {nu}. The metal-insulator transition (MIT) occurs at |{nu}{sub c}| {approx}0.65 and in the regime of the dissipative transport, where the longitudinal resistance R{sub xx} >1/2R{sub K}. The critical resistivity (R{sub xx} per square) is {rho}{sub xx}({nu}{sub c}) {approx} 1/2R{sub K} and is correlated with the appearance of zero plateau in Hall conductivity {sigma}{sub xy}({nu}) and peaks in {sigma}{sub xx}({nu}). This leads us to construct a universal low-T (n, B) phase diagram of this quantum phase transition.

  14. Slide 1

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

    XX7 - - - - - 30 (30) 228 February Summary 120 75 195 10 185 50 135 Contract Budget Base (CBB) Log Page 4 Undistributed Budget Parameters * Should be distributed within two...

  15. MAPPER - Sheet1

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

    .13 204.66 RSF - DRAWN OF INCHES mm mm IN REV D 1 INITIAL ISSUE x x.xxx x.xx SIDNEY W. BARNES RESEARCH LABORATORY DESCRIPTION DATE ZONE 11 - .0005 .013 DEPT. OF...

  16. Rescission of American Recovery and Reinvestment Act Reporting Requirements

    Broader source: Energy.gov [DOE]

    Financial Assistance Letter (FAL) 2014-xx provides COs with: 1) notice of the recession of the reporting requirements for recipients of ARRA funds in accordance with the recently passed P.L. 113-76, Consolidated Appropriations Act, 2014

  17. Extrinsic anomalous Hall effect in epitaxial Mn{sub 4}N films

    SciTech Connect (OSTI)

    Meng, M.; Wu, S. X. Ren, L. Z.; Zhou, W. Q.; Wang, Y. J.; Wang, G. L.; Li, S. W.

    2015-01-19

    Anomalous Hall effect (AHE) in ferrimagnetic Mn{sub 4}N epitaxial films grown by molecular-beam epitaxy is investigated. The longitudinal conductivity σ{sub xx} is within the superclean regime, indicating Mn{sub 4}N is a highly conducting material. We further demonstrate that the AHE signal in 40-nm-thick films is mainly due to the extrinsic contributions based on the analysis fitted by ρ{sub AH}=a′ρ{sub xx0}+bρ{sub xx}{sup 2} and σ{sub AH}∝σ{sub xx}. Our study not only provide a strategy for further theoretical work on antiperovskite manganese nitrides but also shed promising light on utilizing their extrinsic AHE to fabricate spintronic devices.

  18. DOE

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

    O 580 .1 A Admin Chg 1 3 10-23 2012 U.S. Department of Energyadmin change DOE O XXX.XWashington, D.C. DOE O XXX.X Chg X: XX-XX-XXXX SUBJECT: ADMINISTRATIVE CHANGE TO DOE O XXX.X, TITLE (IN ITALICS) EXPLANATION OF CHANGES. [This information can be copied from the Approval Memo] LOCATIONS OF CHANGES: Page Paragraph Changed To [Original text that was changed] [Revised text]

  19. Search for new physics in t?+ large ET-> bb?qq?qq? + large ET final state in pp? collisions at ?s=1.96 TeV

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

    Aaltonen, T; Gonzalez, B Alvarez; Cantabria Inst. of Phys.; Amerio, S; Amidei, D; Anastassov, A; Annovi, A

    2011-11-11

    We present a search for a new particle T' decaying to a top quark via T' = t + X, where X goes undetected. We use a data sample corresponding to 5.7 fb-1 of integrated luminosity of pp? collisions with ?s = 1.96 TeV, collected at Fermilab Tevatron by the CDF II detector. Our search for pair production of T' is focused on the hadronic decay channel, pp? = T'T' ?= tt?+XX?=bqq?b?q?q + XX?. We interpret our results in terms of a model where T' is an exotic fourth generation quark and X is a dark matter particle. The datamoreare consistent with standard model expectations. We set a limit on the generic production of T'T' ? = tt ?=+ XX?, excluding the fourth generation exotic quarks T' at 95% confidence level up to mT` = 400 GeV/c2 for mX ? 70 GeV/c2.less

  20. Anomalous Hall effect in magnetic disordered alloys: Effects of spin orbital coupling

    SciTech Connect (OSTI)

    Ma, L.; Gao, W. B.; Zhou, S. M.; Shi, Z.; He, P.; Miao, J.; Jiang, Y.

    2013-12-28

    For disordered ternary Fe{sub 0.5}(Pd{sub 1−x}Pt{sub x}){sub 0.5} alloy films, the anomalous Hall effect obeys the conventional scaling law ρ{sub AH}=aρ{sub xx}+bρ{sub xx}{sup 2} with the longitudinal resistivity ρ{sub xx} and anomalous Hall resistivity ρ{sub AH}. Contributed by the intrinsic term and the extrinsic side-jump one, the scattering-independent anomalous Hall conductivity b increases with increasing Pt/Pd concentration. In contrast, the skew scattering parameter a is mainly influenced by the residual resistivity. The present results will facilitate the theoretical studies of the anomalous Hall effect in magnetic disordered alloys.

  1. Equivalence between XY and dimerized models

    SciTech Connect (OSTI)

    Campos Venuti, Lorenzo; Roncaglia, Marco

    2010-06-15

    The spin-1/2 chain with XY anisotropic coupling in the plane and the XX isotropic dimerized chain are shown to be equivalent in the bulk. For finite systems, we prove that the equivalence is exact in given parity sectors, after taking care of the precise boundary conditions. The proof is given constructively by finding unitary transformations that map the models onto each other. Moreover, we considerably generalized our mapping and showed that even in the case of fully site-dependent couplings the XY chain can be mapped onto an XX model. This result has potential application in the study of disordered systems.

  2. OMB Control Number: 1910-5165

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

    1910-5165 Expires: xx/xx/201x SEMI-ANNUAL DAVIS-BACON ENFORCEMENT REPORT Please submit this Semi-Annual Davis-Bacon Enforcement Report to your site DOE/NNSA Contractor Human Resource Division (CHRD) Office. If you do not have a DOE/NNSA CHRD Office, please submit the report to: DBAEnforcementReports@hq.doe.gov. The following questions regarding enforcement activity (Davis-Bacon and Related Acts) by this Agency are required by 29 CFR, Part 5.7(b), and Department of Labor, All Agency Memorandum

  3. Open Issues

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

    October 2011 Resolved: Pathscale/4.0.9 not compatible with default libraries October 14, 2011 by Helen He Symptom: New xt-libsci/11.x.x does not have pathscale support. Other default libraries (netcdf, hdf5, fftw, petsc, etc.) have no pathscale/4.0.9 support

  4. Released: July 2009

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

    Corn Milling",0,0,0,0,0,0,0,"X",0 31131," Sugar Manufacturing",0,0,0,0,0,0,0,0,0 3114," ...illing",0,0,0,0,"X","X","X","X",0 31131," Sugar Manufacturing",0,0,"X",0,0,0,"X","X",0 ...

  5. Notice of Intent to Develop a Page Change for DOE O 420.1C, Facility Safety

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2013-06-21

    The Page Change will be strictly limited in scope to changes necessary to accomplish the following objectives: (1) to invoke revised DOE-STD- 1104-20xx, Review and Approval of Nuclear Facility Safety Basis and Safety Design Basis Document, as a required method; (2) to invoke revised DOE-STD-3009-20xx, Preparation of Nonreactor Nuclear Facility Documented Safety Analysis, as a required method for new nuclear facilities as discussed below; and (3) to make miscellaneous administrative corrections and clarifications based on the one-year implementation review required by DOE O 251.1C, Departmental Directives Program. This JM is an update to one approved June 21, 2013.

  6. Fractional quantum Hall effect at Landau level filling ν = 4/11

    SciTech Connect (OSTI)

    Pan, W.; Baldwin, K. W.; West, K. W.; Pfeiffer, L. N.; Tsui, D. C.

    2015-01-09

    In this study, we report low temperature electronic transport results on the fractional quantum Hall effect of composite fermions at Landau level filling ν = 4/11 in a very high mobility and low density sample. Measurements were carried out at temperatures down to 15mK, where an activated magnetoresistance Rxx and a quantized Hall resistance Rxy, within 1% of the expected value of h/(4/11)e2, were observed. The temperature dependence of the Rxx minimum at 4/11 yields an activation energy gap of ~ 7 mK. Developing Hall plateaus were also observed at the neighboring states at ν = 3/8 and 5/13.

  7. No.","Financial and Activity Report (sheet 1 of 2) Version 1.4",,,,,,,,39843,"(0

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

    4",,,,,,,,39843,"(001) Legislative Branch","(001-35) Legislative Branch: Government Accountability Office","(05-0108 2009 \ 2010) Salaries and Expenses, Recovery Act","Contracts and Orders (including modifications)","Y-US" ,"Agency Name:","(019) Department of Energy",,,,,,,39850,"(005) Department of Agriculture","(005-XX) Department of Agriculture","(12-0111 2009 \ 2010) Agriculture Buildings and

  8. U

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

    Transition Plan September 2002 TEMPLATE U. S. DEPARTMENT OF ENERGY Organizational Title 1 Organizational Title 2 Change Control Page The following information is being used to control and track modifications made to this document. 1) Revision Date: Author: Section(s): Page Number(s): Summary of Change(s): Title Page Document Name: Project Name Transition Plan Publication Date: Month Year Contract Number: XX-XXXX-XXXXXXXXX Project Number: Task: XXXXXXXXXXXXXX Prepared by: XXXX XXXXXX Approval:

  9. All Innovations

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

    70 Years of Innovations » All Innovations All Innovations Since 1943, some of the world's smartest and most passionate technical people have accomplished the difficult, the unexpected, and what sometimes seems impossible at Los Alamos. 70 YEARS OF INNOVATIONS 1940s 1943 WAR-ENDING INVENTIONS The Laboratory was created with one crucial objective: gather the world's brightest scientific minds to design and build a weapon that would help to end World War II. Fight power with power xx Essential for

  10. Amendment 1

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

    1 Date: 6/30/2016 ISSUED BY: National Renewable Energy Laboratory 15013 Denver West Parkway Golden, CO 80401 PROJECT NAME & LOCATION Service and Preventive Maintenance Agreement for Standby Power Generators The above numbered solicitation is amended as set forth below. The hour and date specified for receipt of offers [XX ] is not extended. [] is extended to OFFERORS ARE ADVISED TO ACKNOWLEDGE THIS AMENDMENT IN THEIR PROPOSAL. FAILURE TO ACKNOWLEDGE THIS AMENDMENT MAY RESULT IN REJECTION OF

  11. EERE PowerPoint 97-2004 Template: Green Version

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

    Novel Geothermal Development of Deep Sedimentary Systems in the U.S. Principal Investigators: Joseph Moore 1 & Rick Allis 2 1 Energy & Geoscience Institute, University of Utah; 2 Utah Geological Survey Track Name: Track 3 EGS1 Project Officer: Bill Vandermeer Total Project Funding: $xx May 13, 2015 This presentation does not contain any proprietary confidential, or otherwise restricted information. 200ºC NW SE Reservoir target 2 | US DOE Geothermal Office eere.energy.gov

  12. BWXT Pantex

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

    [Enter Contractor name] FY 20XX [Enter year] Specific Plan for Workforce Restructuring: Involuntary Separation Program for the U.S. Department of Energy or National Nuclear Security Administration [Enter name of DOE or NNSA] Effective: [Enter Month and Year] May be exempt from public release under the Freedom of Information Act (5 USC 552) exemption number and category: #5, Privileged Information. Department of Energy review required before public release. Executive Summary During fiscal year

  13. The original of this document contains information which is subject to withholdi

    Office of Environmental Management (EM)

    March 8, 2016 ) Case No.: PSH-16-0014 ) ____________________________________) Issued: August 19, 2016 ___________________________ Administrative Judge Decision ___________________________ William M. Schwartz, Administrative Judge: This Decision concerns the eligibility of XXXXX XX XXXX. (hereinafter referred to as "the individual") to hold an access authorization 1 under the Department of Energy's (DOE) regulations set forth at 10 C.F.R. Part 710, Subpart A, entitled, "General

  14. The original of this document contains information which is subject to withholdi

    Office of Environmental Management (EM)

    United States Department of Energy Office of Hearings and Appeals In the Matter of: Personnel Security Hearing ) ) Filing Date: June 9, 2016 ) _________________________________________ ) Case No.: PSH-16-0050 Issued: August 31, 2016 _______________ Administrative Judge Decision _______________ Steven L. Fine, Administrative Judge: This Decision concerns the eligibility of XXXX XX XXXX (hereinafter referred to as "the Individual") for access authorization under the Department of

  15. Workplace Charging Challenge Partner: The Valley Health System | Department

    Office of Environmental Management (EM)

    Energy IDEXX Laboratories Workplace Charging Challenge Partner: IDEXX Laboratories Workplace Charging Challenge Partner: IDEXX Laboratories Joined the Challenge: November 2014 Headquarters: Westbrook, ME Charging Location: Westbrook, ME Domestic Employees: 4,300 IDEXX Laboratories is committed to providing a multitude of alternative transportation option to employees in the effort to reduce greenhouse gas emissions and increase sustainability efforts. The IDEXX ParXX program encourages

  16. DATE:

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

    POLICY FLASH 2014-35 DATE: July 09, 2014 TO: Procurement Directors FROM: Director Contract and Financial Assistance Policy Division Office of Policy Office of Acquisition and Project Management SUBJECT: Rescission of American Recovery and Reinvestment Act Reporting Requirements. SUMMARY: Financial Assistance Letter (FAL) 2014-xx provides COs with: 1) notice of the recession of the reporting requirements for recipients of ARRA funds in accordance with the recently passed P.L. 113- 76,

  17. Basis for Section 3116 Determination for Closure of F-Tank Farm at the Savannah River Site

    Office of Environmental Management (EM)

    Enter Contractor name] FY 20XX [Enter year] Specific Plan for Workforce Restructuring: Involuntary Separation Program for the U.S. Department of Energy or National Nuclear Security Administration [Enter name of DOE or NNSA] Effective: [Enter Month and Year] May be exempt from public release under the Freedom of Information Act (5 USC 552) exemption number and category: #5, Privileged Information. Department of Energy review required before public release. Executive Summary During fiscal year

  18. U

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

    Configuration Management Plan September 2002 TEMPLATE U. S. DEPARTMENT OF ENERGY Organizational Title 1 Organizational Title 2 Change Control Page The following information is being used to control and track modifications made to this document. 1) Revision Date: Author: Section(s): Page Number(s): Summary of Change(s): Title Page Document Name: Project Name Configuration Management Plan Publication Date: Month Year Contract Number: XX-XXXX-XXXXXXXXX Project Number: Task: XXXXXXXXXXXXXX Prepared

  19. Search for new T' particles in final states with large jet multiplicities and missing transverse energy in pp collisions at √s=1.96 TeV

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

    Aaltonen, T.

    2011-11-11

    We present a search for a new particle T decaying to a top quark via T = t + X, where X goes undetected. We use a data sample corresponding to 5.7 fb-1 of integrated luminosity of pp collisions with √s = 1.96 TeV, collected at Fermilab Tevatron by the CDF II detector. Our search for pair production of T' is focused on the hadronic decay channel, pp = TT= tt+XX=bqqbqq + XX. We interpret our results in terms of a model where T is an exotic fourth generation quark and X is a dark matter particle. The data aremore » consistent with standard model expectations. We set a limit on the generic production of TT = tt =+ XX, excluding the fourth generation exotic quarks T at 95% confidence level up to mT = 400 GeV/c2 for mX ≤ 70 GeV/c2.« less

  20. Search for Production of Heavy Particles Decaying to Top Quarks and Invisible Particles in $p\\bar{p}$ collisions at $\\sqrt{s}=1.96$ TeV

    SciTech Connect (OSTI)

    Aaltonen, T.; Alvarez Gonzalez, B.; Amerio, S.; Amidei, D.; Anastassov, A.; Annovi, A.; Antos, J.; Apollinari, G.; Appel, J.A.; Apresyan, A.; Arisawa, T.; /Waseda U. /Dubna, JINR

    2011-03-01

    We present a search for a new particle T{prime} decaying to a top-quark via T{prime} {yields} t + X, where X is an invisible particle. In a data sample with 4.8 fb{sup -1} of integrated luminosity collected by the CDF II detector at Fermilab in p{bar p} collisions with {radical}s = 1.96 TeV, we search for pair production of T0 in the lepton+jets channel, p{bar p} {yields} t{bar t} + XX {yields} {ell}{nu}bqq{prime}b + XX. We interpret our results primarily in terms of a model where T{prime} are exotic fourth generation quarks and X are dark matter particles. The data are consistent with standard model expectations, and we set 95% confidence level limits on the generic production of T{prime}{bar T}{prime} {yields} t{bar t} + XX. We apply these limits to the dark matter model and exclude the fourth generation exotic quarks T{prime} at 95% confidence level up to m{sub T{prime}} = 360 GeV/c{sup 2} for m{sub x} {<=} 100 GeV/c{sup 2}.

  1. X and Y chromosome behavior in brain tumors: Pieces in a puzzle

    SciTech Connect (OSTI)

    Hecht, B.K. [Hecht Associates, Jacksonville, FL (United States); Chatel, M; Gioanni, J. [Univ. of Nice (France)] [and others

    1994-09-01

    Sex chromosome behavior in selected somatic cells is baffling. We serendipitously encountered this sex chromosome shuffle while studying malignant gliomas. Tumor specimens from 3/10 (30%) females and 15/27 (56%) males had sex chromosome abnormalities. Specimens from females showed X loss in 2 cases and possible X gain in 1 case. In 2 cases with autosomal abnormalities, only XX cells were found, suggesting that sex chromosome changes are independent of autosomal changes. Specimens from males showed Y rearrangements in 3 cases, Y loss in 15 cases, XX in 3 cases and autosomal abnormalities in 9 cases. The Y rearrangements may provide a route to Y loss whereas the advent of XX clones in male tumors bespeaks X isodisomy, a mechanism for adding an extra active X. The autosomal changes were rearrangements against a pseudo-diploid background in 5 cases and near-triploidy/tetraploidy in 4 cases. The cases with autosomal changes tended not to have sex chromosome abnormalities (p<0.01) and, the converse, cases with sex chromosome anomalies were without autosomal abnormalities (p<0.05). The process of sex chromosome changes appears independent of the process of autosomal changes. The conventional interpretation: the sex chromosome changes in brain tumors are in non-malignant cells. An unconventional interpretation: sex chromosome changes represent an alternative avenue to malignancy.

  2. Search for new T' particles in final states with large jet multiplicities and missing transverse energy in pp? collisions at ?s=1.96 TeV

    SciTech Connect (OSTI)

    Aaltonen, T.

    2011-11-11

    We present a search for a new particle T' decaying to a top quark via T' = t + X, where X goes undetected. We use a data sample corresponding to 5.7 fb-1 of integrated luminosity of pp? collisions with ?s = 1.96 TeV, collected at Fermilab Tevatron by the CDF II detector. Our search for pair production of T' is focused on the hadronic decay channel, pp? = T'T' ?= tt?+XX?=bqq?b?q?q + XX?. We interpret our results in terms of a model where T' is an exotic fourth generation quark and X is a dark matter particle. The data are consistent with standard model expectations. We set a limit on the generic production of T'T' ? = tt ?=+ XX?, excluding the fourth generation exotic quarks T' at 95% confidence level up to mT` = 400 GeV/c2 for mX ? 70 GeV/c2.

  3. Relative ion expansion velocity in laser-produced plasmas

    SciTech Connect (OSTI)

    Goldsmith, S.; Moreno, J.C.; Griem, H.R.; Cohen, L.; Richardson, M.C.

    1988-07-15

    The spectra of highly ionized titanium, TiXIII through TiXXI, and CVI Lyman lines were excited in laser-produced plasmas. The plasma was produced by uniformly irradiating spherical glass microballoons coated with thin layers of titanium and parylene. The 24-beam Omega laser system produced short, 0.6 ns, and high intensity, 4 x 10/sup 14/ W/cm,/sup 2/ laser pulses at a wavelength of 351 nm. The measured wavelength for the 2p-3s TiXIII resonance lines had an average shift of +0.023 A relative to the CVI and TiXX spectral lines. No shift was found between the CVI, TiXIX, and TiXX lines. The shift is attributed to a Doppler effect, resulting from a difference of (2.6 +- 0.2) x 10/sup 7/ cm/s in the expansion velocities of TiXIX and TiXX ions compared to TiXIII ions.

  4. APS Science 2006.

    SciTech Connect (OSTI)

    Gibson, J. M.; Fenner, R. B.; Long, G.; Borland, M.; Decker, G.

    2007-05-24

    In my five years as the Director of the Advanced Photon Source (APS), I have been fortunate to see major growth in the scientific impact from the APS. This year I am particularly enthusiastic about prospects for our longer-term future. Every scientific instrument must remain at the cutting edge to flourish. Our plans for the next generation of APS--an APS upgrade--got seriously in gear this year with strong encouragement from our users and sponsors. The most promising avenue that has emerged is the energy-recovery linac (ERL) (see article on page xx), for which we are beginning serious R&D. The ERL{at}APS would offer revolutionary performance, especially for x-ray imaging and ultrafast science, while not seriously disrupting the existing user base. I am very proud of our accelerator physics and engineering staff, who not only keep the current APS at the forefront, but were able to greatly impress our international Machine Advisory Committee with the quality of their work on the possible upgrade option (see page xx). As we prepare for long-term major upgrades, our plans to develop and optimize all the sectors at APS in the near future are advancing. Several new beamlines saw first light this year, including a dedicated powder diffraction beamline (11-BM), two instruments for inelastic x-ray scattering at sector 30, and the Center for Nanoscale Materials (CNM) Nanoprobe beamline at sector 26. Our partnership in the first x-ray free-electron laser (LCLS) to be built at Stanford contributes to revolutionary growth in ultrafast science (see page xx), and we are developing a pulse chirping scheme to get ps pulses at sector 7 of the APS within a year or so. In this report, you will find selected highlights of scientific research at the APS from calendar year 2006. The highlighted work covers diverse disciplines, from fundamental to applied science. In the article on page xx you can see the direct impact of APS research on technology. Several new products have emerged from

  5. A User’s Guide to the Comprehensive Water Quality Database for Groundwater in the Vicinity of the Nevada Test Site, Rev. No.: 1

    SciTech Connect (OSTI)

    Farnham, Irene

    2006-09-01

    This water quality database (viz.GeochemXX.mdb) has been developed as part of the Underground Test Area (UGTA) Program with the cooperation of several agencies actively participating in ongoing evaluation and characterization activities under contract to the U.S. Department of Energy (DOE), National Nuclear Security Administration Nevada Site Office (NNSA/NSO). The database has been constructed to provide up-to-date, comprehensive, and quality controlled data in a uniform format for the support of current and future projects. This database provides a valuable tool for geochemical and hydrogeologic evaluations of the Nevada Test Site (NTS) and surrounding region. Chemistry data have been compiled for groundwater within the NTS and the surrounding region. These data include major ions, organic compounds, trace elements, radionuclides, various field parameters, and environmental isotopes. Colloid data are also included in the database. The GeochemXX.mdb database is distributed on an annual basis. The extension ''XX'' within the database title is replaced by the last two digits of the release year (e.g., Geochem06 for the version released during the 2006 fiscal year). The database is distributed via compact disc (CD) and is also uploaded to the Common Data Repository (CDR) in order to make it available to all agencies with DOE intranet access. This report provides an explanation of the database configuration and summarizes the general content and utility of the individual data tables. In addition to describing the data, subsequent sections of this report provide the data user with an explanation of the quality assurance/quality control (QA/QC) protocols for this database.

  6. NREL Bilateral Nondisclosure Agreement - Sample

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

    (REV 07/09) Page 1 of 3 BILATERAL NON-DISCLOSURE AGREEMENT No. XX - XXXX ("Agreement") This Agreement is entered into by and between the Alliance for Sustainable Energy, LLC ("Alliance"), the Manager and Operator of the National Renewable Energy Laboratory ("NREL") under Prime Contract No. DE- AC36-08GO28308 for the U.S. Department of Energy (the "DOE"), located at 15013 Denver West Parkway, Golden, CO, 80401 and COMPANY NAME ("Company"), whose

  7. NREL Unilateral Nondisclosure Agreement - Company Disclosing - Sample

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

    REV 07/09) Page 1 of 2 UNILATERAL (IN) NON-DISCLOSURE AGREEMENT No. XX - XXXX ("Agreement") This Agreement is entered into by and between the Alliance for Sustainable Energy, LLC ("Alliance"), the Manager and Operator of the National Renewable Energy Laboratory ("NREL") under Prime Contract No. DE- AC36-08GO28308 for the U.S. Department of Energy (the "DOE"), located at 15013 Denver West Parkway, Golden, CO 80401, and DISCLOSING PARTY NAME

  8. ¢¡¤£¦¥¨§© "!$#%'&()102)3¥¨46578)@9A4B@8CD§E)1

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

     "!$#%'&()102)3¥¨46578)@9A4B@8CD§E)1'FG H©I5QPSR6¥¨§E£E§¦¥GT UI024§E)¢V'RS402XWY4` a )D¡b £ cedgfihqpIr8fgsit¤uwvXx€ybx€fg‚

  9. Helen He, David Turner, Richard Gerber NUG Monthly Meeting

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

    David Turner, Richard Gerber NUG Monthly Meeting --- 1 --- NUG M onthly M ee-ng July 1 0, 2 014 Zhengji Zhao " NERSC User Services Group" " NUG Monthly 2014 " July 10, 2014 Edison Issues Since the 6/25 upgrade Upgrades on Edison on 6/25 (partial list) * Maintenance/Configura-on M odifica-ons - set C DT 1 .16 t o d efault * Upgrades on Edison login nodes - SLES 1 1 S P3 - BCM 6 .1 - ESM---XX---3.0.0 - ESL---XC---2.2.0 * Upgrades on main frame - Sonexion u pdate_cs.1.3.1---007

  10. "PART 1: ENERGY/WATER CONSUMPTION AND COST DATA"

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

    Adjustment Data Report for Fiscal Years Prior to 2008" ,,,"FY","20XX" "Agency:","Department of X",,,"Prepared by:" "Date:",,,,"Phone:" "PART 1: ENERGY/WATER CONSUMPTION AND COST DATA" "1-1. NECPA/E.O. 13423 Goal Subject Buildings" "Energy Type","Consumption Units","Annual Consumption","Annual Cost (Thou. $)","Unit Cost ($)",,"Site-Delivered Btu

  11. untitled

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

    UCRd1950 Unclassified-Chemistry Distribution U P I r n I T Y OF CALIFORNIA Radiation Laboratory Contract No. V-7405-eng-48 THE PATH OF CllRBOM I N PHOTOSYNTHFSIS. XX. THE STEADY STATE M. Calvin and Peter Massini September, 1952 Berkeley, California THE PATH O F C A R B O N IA? PHOTOSYfJTHESIS, no TKE STEWY S T A T E E 35 M a Calvin and Peter h s s f n i Radiation Labmatmy and Deparktienfi of Chemistry7 University of D a l i f ornia, ~crkeley** (*) Fellow of the Swias Foundation, mStStiftunk f k

  12. Template for Contracting Company Drug Testing for DOE Positions

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

    Address of Requestor Dear Sir or Madam: Subject: Last name, First name Middle initial - [last four digits of the SSN] xxx-xx-0123 This letter is in response to a request from [insert name of requestor] received on [insert date] to process [insert name] for a Department of Energy (DOE) security clearance in connection with his/her employment as [insert position] with [insert company name] under [insert site office] Contract No.: [insert contract number] Please be advised that your request for a

  13. Evaluation of delivered monitor unit accuracy of gated step-and-shoot IMRT using a two-dimensional detector array

    SciTech Connect (OSTI)

    Cheong, Kwang-Ho; Kang, Sei-Kwon; Lee, MeYeon; Kim, Su SSan; Park, SoAh; Hwang, Tae-Jin; Kim, Kyoung Ju; Oh, Do Hoon; Bae, Hoonsik; Suh, Tae-Suk

    2010-03-15

    Purpose: To overcome the problem of organ motion in intensity-modulated radiation therapy (IMRT), gated IMRT is often used for the treatment of lung cancer. In this study, the authors investigated the accuracy of the delivered monitor units (MUs) from each segment during gated IMRT using a two-dimensional detector array for user-specific verification purpose. Methods: The authors planned a 6 MV photon, seven-port step-and-shoot lung IMRT delivery. The respiration signals for gated IMRT delivery were obtained from the one-dimensional moving phantom using the real-time position management (RPM) system (Varian Medical Systems, Palo Alto, CA). The beams were delivered using a Clinac iX (Varian Medical Systems, Palo Alto, CA) with the Millennium 120 MLC. The MatriXX (IBA Dosimetry GmbH, Germany) was validated through consistency and reproducibility tests as well as comparison with measurements from a Farmer-type ion chamber. The authors delivered beams with varying dose rates and duty cycles and analyzed the MatriXX data to evaluate MU delivery accuracy. Results: There was quite good agreement between the planned segment MUs and the MUs computed from the MatriXX within {+-}2% error. The beam-on times computed from the MatriXX data were almost identical for all cases, and they matched well with the RPM beam-on and beam-off signals. A slight difference was observed between them, but it was less than 40 ms. The gated IMRT delivery demonstrated an MU delivery accuracy that was equivalent to ungated IMRT, and the delivered MUs with a gating signal agreed with the planned MUs within {+-}0.5 MU regardless of dose rate and duty cycle. Conclusions: The authors can conclude that gated IMRT is able to deliver an accurate dose to a patient during a procedure. The authors believe that the methodology and results can be transferred to other vendors' devices, particularly those that do not provide MLC log data for a verification purpose.

  14. Proceedings of

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

    xx by ASME 31 st International Conference on Ocean Offshore and Arctic Engineering (OMAE) June 10-15, 2012, Rio de Janeiro, Brazil OMAE 2012 - 84074 Marine Hydrokinetic Turbine Power-Take-Off Design for Optimal Performance and Low Impact on Cost-of-Energy Mike J. Beam Applied Research Lab / Penn State University PO Box 30, State College, PA, 16804-0030 Brian l. Kline Applied Research Lab / Penn State University PO Box 30, State College, PA, 16804-0030 William Straka ARL / PSU State College, PA,

  15. The terminator "toy" chemistry test: A simple tool to assess errors in transport schemes

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

    Lauritzen, P. H.; Conley, A. J.; Lamarque, J. -F.; Vitt, F.; Taylor, M. A.

    2015-05-04

    This test extends the evaluation of transport schemes from prescribed advection of inert scalars to reactive species. The test consists of transporting two interacting chemical species in the Nair and Lauritzen 2-D idealized flow field. The sources and sinks for these two species are given by a simple, but non-linear, "toy" chemistry that represents combination (X+X → X2) and dissociation (X2 → X+X). This chemistry mimics photolysis-driven conditions near the solar terminator, where strong gradients in the spatial distribution of the species develop near its edge. Despite the large spatial variations in each species, the weighted sum XT = X+2X2more » should always be preserved at spatial scales at which molecular diffusion is excluded. The terminator test demonstrates how well the advection–transport scheme preserves linear correlations. Chemistry–transport (physics–dynamics) coupling can also be studied with this test. Examples of the consequences of this test are shown for illustration.« less

  16. The terminator "toy" chemistry test: A simple tool to assess errors in transport schemes

    SciTech Connect (OSTI)

    Lauritzen, P. H.; Conley, A. J.; Lamarque, J. -F.; Vitt, F.; Taylor, M. A.

    2015-05-04

    This test extends the evaluation of transport schemes from prescribed advection of inert scalars to reactive species. The test consists of transporting two interacting chemical species in the Nair and Lauritzen 2-D idealized flow field. The sources and sinks for these two species are given by a simple, but non-linear, "toy" chemistry that represents combination (X+X → X2) and dissociation (X2X+X). This chemistry mimics photolysis-driven conditions near the solar terminator, where strong gradients in the spatial distribution of the species develop near its edge. Despite the large spatial variations in each species, the weighted sum XT = X+2X2 should always be preserved at spatial scales at which molecular diffusion is excluded. The terminator test demonstrates how well the advection–transport scheme preserves linear correlations. Chemistry–transport (physics–dynamics) coupling can also be studied with this test. Examples of the consequences of this test are shown for illustration.

  17. Superfluid density and Berezinskii-Kosterlitz-Thouless transition of a spin-orbit-coupled Fulde-Ferrell superfluid

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

    Cao, Ye; Liu, Xia -Ji; He, Lianyi; Long, Gui -Lu; Hu, Hui

    2015-02-09

    We theoretically investigate the superfluid density and Berezinskii-Kosterlitz-Thouless (BKT) transition of a two-dimensional Rashba spin-orbit-coupled atomic Fermi gas with both in-plane and out-of-plane Zeeman fields. It was recently predicted that, by tuning the two Zeeman fields, the system may exhibit different exotic Fulde-Ferrell (FF) superfluid phases, including the gapped FF, gapless FF, gapless topological FF, and gapped topological FF states. Due to the FF paring, we show that the superfluid density (tensor) of the system becomes anisotropic. When an in-plane Zeeman field is applied along the x direction, the tensor component along the y direction ns,yy is generally larger thanmore » ns,xx in most parameter space. At zero temperature, there is always a discontinuity jump in ns,xx as the system evolves from a gapped FF into a gapless FF state. With increasing temperature, such a jump is gradually washed out. The critical BKT temperature has been calculated as functions of the spin-orbit-coupling strength, interatomic interaction strength, and in-plane and out-of-plane Zeeman fields. We predict that the novel FF superfluid phases have a significant critical BKT temperature, typically at the order of 0.1TF, where TF is the Fermi degenerate temperature. Furthermore, their observation is within the reach of current experimental techniques in cold-atom laboratories.« less

  18. Lifetime and Polarization of the Radiative Decay of Excitons, Biexcitons, and Trions in CdSe Nanocrystal Quantum Dots

    SciTech Connect (OSTI)

    Califano, M.; Franceschetti, A.; Zunger, A.

    2007-01-01

    Using the pseudopotential configuration-interaction method, we calculate the intrinsic lifetime and polarization of the radiative decay of single excitons (X), positive and negative trions (X{sup +} and X{sup -}), and biexcitons (XX) in CdSe nanocrystal quantum dots. We investigate the effects of the inclusion of increasingly more complex many-body treatments, starting from the single-particle approach and culminating with the configuration-interaction scheme. Our configuration-interaction results for the size dependence of the single-exciton radiative lifetime at room temperature are in excellent agreement with recent experimental data. We also find the following. (i) Whereas the polarization of the bright exciton emission is always perpendicular to the hexagonal c axis, the polarization of the dark exciton switches from perpendicular to parallel to the hexagonal c axis in large dots, in agreement with experiment. (ii) The ratio of the radiative lifetimes of mono- and biexcitons (X):(XX) is {approx}1:1 in large dots (R=19.2 {angstrom}). This ratio increases with decreasing nanocrystal size, approaching 2 in small dots (R=10.3 {angstrom}). (iii) The calculated ratio (X{sup +}):(X{sup -}) between positive and negative trion lifetimes is close to 2 for all dot sizes considered.

  19. Feasibility study of volumetric modulated arc therapy with constant dose rate for endometrial cancer

    SciTech Connect (OSTI)

    Yang, Ruijie; Wang, Junjie; Xu, Feng; Li, Hua; Zhang, Xile

    2013-10-01

    To investigate the feasibility, efficiency, and delivery accuracy of volumetric modulated arc therapy with constant dose rate (VMAT-CDR) for whole-pelvic radiotherapy (WPRT) of endometrial cancer. The nine-field intensity-modulated radiotherapy (IMRT), VMAT with variable dose-rate (VMAT-VDR), and VMAT-CDR plans were created for 9 patients with endometrial cancer undergoing WPRT. The dose distribution of planning target volume (PTV), organs at risk (OARs), and normal tissue (NT) were compared. The monitor units (MUs) and treatment delivery time were also evaluated. For each VMAT-CDR plan, a dry run was performed to assess the dosimetric accuracy with MatriXX from IBA. Compared with IMRT, the VMAT-CDR plans delivered a slightly greater V{sub 20} of the bowel, bladder, pelvis bone, and NT, but significantly decreased the dose to the high-dose region of the rectum and pelvis bone. The MUs decreased from 1105 with IMRT to 628 with VMAT-CDR. The delivery time also decreased from 9.5 to 3.2 minutes. The average gamma pass rate was 95.6% at the 3%/3 mm criteria with MatriXX pretreatment verification for 9 patients. VMAT-CDR can achieve comparable plan quality with significant shorter delivery time and smaller number of MUs compared with IMRT for patients with endometrial cancer undergoing WPRT. It can be accurately delivered and be an alternative to IMRT on the linear accelerator without VDR capability.

  20. Evaluation of stacking faults and associated partial dislocations in AlSb/GaAs (001) interface by aberration-corrected high-resolution transmission electron microscopy

    SciTech Connect (OSTI)

    Wen, C.; Ge, B. H.; Cui, Y. X.; Li, F. H.; Zhu, J.; Yu, R.; Cheng, Z. Y.

    2014-11-15

    The stacking faults (SFs) in an AlSb/GaAs (001) interface were investigated using a 300 kV spherical aberration-corrected high-resolution transmission electron microscope (HRTEM). The structure and strain distribution of the single and intersecting (V-shaped) SFs associated with partial dislocations (PDs) were characterized by the [110] HRTEM images and geometric phase analysis, respectively. In the biaxial strain maps ?{sub xx} and ?{sub yy}, a SF can be divided into several sections under different strain states (positive or negative strain values). Furthermore, the strain state for the same section of a SF is in contrast to each other in ?{sub xx} and ?{sub yy} strain maps. The modification in the strain states was attributed to the variation in the local atomic displacements for the SF in the AlSb film on the GaAs substrate recorded in the lattice image. Finally, the single SF was found to be bounded by two 30 PDs. A pair of 30 PDs near the heteroepitaxial interface reacted to form a Lomer-Cottrell sessile dislocation located at the vertices of V-shaped SFs with opposite screw components. The roles of misfit dislocations, such as the PDs, in strain relaxation were also discussed.

  1. Section 34

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

    x ' j N r'1 C xr j N s'1 A &1 rs N s (2 &2 x ) 2 ' C xx & j N r,s'1 C xr C xs A &1 rs F(x) ' exp(&x 2 / R 2 c ) % e < exp(&x 2 / R 2 n ) Session Papers 149 (1) (2) (3) Estimation of Errors in Objectively Analyzed Fields and Sensitivity to Number and Spacing of Stations M.J. Leach, J.J. Yio, and R.T. Cederwall Atmospheric Science Division Lawrence Livermore National Laboratory Livermore, California Motivation Single-column models (SCMs) are designed to test param-

  2. Effect of enhanced C{sub 2} growth chemistry on nanodiamond film deposition

    SciTech Connect (OSTI)

    Teii, Kungen; Ikeda, Tomohiro

    2007-03-12

    A route to high-purity nanocrystalline diamond films from C{sub 2} dimers and related mechanisms have been investigated by enhancing C{sub 2} growth chemistry in Ar-rich microwave plasmas. Efficient C{sub 2} production by direct dissociation from acetylene causes the micro- to nanocrystal transition with a low threshold Ar concentration of {approx}70% and produces films of {approx}20 nm grains with a distinct visible-Raman peak of diamond. C{sub 2} grows nanodiamond on diamond surfaces but rarely initiates nucleation on foreign surfaces. The phase purity can be improved by increasing the dominance of nanodiamond growth from C{sub 2} over nondiamond growth from CH{sub x}(x=0-3) and large radicals.

  3. Casimir effect in the nonequilibrium steady state of a quantum spin chain

    SciTech Connect (OSTI)

    Gonzalez-Cabrera, D. L.; Racz, Z.

    2010-05-15

    We present a fully microscopics-based calculation of the Casimir effect in a nonequilibrium system, namely, an energy-flux-driven quantum XX chain. The force between the walls (transverse-field impurities) is calculated in a nonequilibrium steady state which is prepared by letting the system evolve from an initial state with the two halves of the chain prepared at equilibrium at different temperatures. The steady state emerging in the large-time limit is homogeneous but carries an energy flux. The Casimir force in this nonequilibrium state is calculated analytically in the limit when the transverse fields are small. We find that the the Casimir force range is reduced compared to the equilibrium case, and suggest that the reason for this is the reduction of fluctuations in the flux-carrying steady state.

  4. Polynomial solutions of the Monge-Ampre equation

    SciTech Connect (OSTI)

    Aminov, Yu A

    2014-11-30

    The question of the existence of polynomial solutions to the Monge-Ampre equation z{sub xx}z{sub yy}?z{sub xy}{sup 2}=f(x,y) is considered in the case when f(x,y) is apolynomial. It is proved that if f is apolynomial of the second degree, which is positive for all values of its arguments and has apositive squared part, then no polynomial solution exists. On the other hand, asolution which is not polynomial but is analytic in the whole of the x,y-plane is produced. Necessary and sufficient conditions for the existence of polynomial solutions of degree up to 4 are found and methods for the construction of such solutions are indicated. An approximation theorem is proved. Bibliography: 10 titles.

  5. Dispersion of the linear and nonlinear optical susceptibilities of the CuAl(S{sub 1x}Se{sub x})? mixed chaclcopyrite compounds

    SciTech Connect (OSTI)

    Reshak, A. H.; Brik, M. G.; Auluck, S.

    2014-09-14

    Based on the electronic band structure, we have calculated the dispersion of the linear and nonlinear optical susceptibilities for the mixed CuAl(S{sub 1x}Se{sub x})? chaclcopyrite compounds with x=0.0, 0.25, 0.5, 0.75, and 1.0. Calculations are performed within the Perdew-Becke-Ernzerhof general gradient approximation. The investigated compounds possess a direct band gap of about 2.2 eV (CuAlS?), 1.9 eV (CuAl(S?.??Se?.??)?), 1.7 eV (CuAl(S?.?Se?.?)?), 1.5 eV (CuAl(S?.??Se?.??)?), and 1.4 eV (CuAlSe?) which tuned to make them optically active for the optoelectronics and photovoltaic applications. These results confirm that substituting S by Se causes significant band gaps' reduction. The optical function's dispersion ??{sup xx}(?) and ??{sup zz}(?)/??{sup xx}(?), ??{sup yy}(?), and ??{sup zz}(?) was calculated and discussed in detail. To demonstrate the effect of substituting S by Se on the complex second-order nonlinear optical susceptibility tensors, we performed detailed calculations for the complex second-order nonlinear optical susceptibility tensors, which show that the neat parents compounds CuAlS? and CuAlSe? exhibit | ????}(-2?;?;?) | as the dominant component, while the mixed alloys exhibit | ????(-2?;?;?) | as the dominant component. The features of | ????}(-2?;?;?) | and | ?{sub 111}}(-2?;?;?) | spectra were analyzed on the basis of the absorptive part of the corresponding dielectric function ??(?) as a function of both ?/2 and ?.

  6. Loss of sex chromosomes in the hematopoietic disorders: Questions, concerns and data interpretation

    SciTech Connect (OSTI)

    Slovak, M.L. [City of Hope National Medical Center, Duarte, CA (United States)

    1994-09-01

    The significance of sex chromosome aberrations in the hematopoietic disorders has not yet been defined. Interpretive problems stem from (1) the loss of a sex chromosome associated with aging, (2) sex chromosome loss as the sole aberration in leukemia is rare, (3) random -(X or Y) is observed frequently in bone marrow samples, and (4) constitutional sex chromosome anomalies must be ruled out in cancer and follow-up may not be possible. The COH database identified 41 patients (pts) with sex chromosome loss. Loss of a sex chromosome was common in myeloid disorders (21/41). In t(8;21) leukemia (n=10), -(X or Y) was a common secondary karyotypic change. Additionally, -Y was associated with clonal evolution in 2 Ph + CML pts. In 2 elderly pts with myeloid disorders, -(X or Y) was observed in complex karyotypes with dmins; however, in the lymphoproliferative disorders -(X or Y) was noted in elderly pts without apparent pathogenetic significance. Three pts had constitutional sex chromosome aberrations: CML in 45,X; ALL in 47, XXY; and RAEB-IT in mos45,X/46,XX. In the mos45,X/46,XX pt, the leukemic clone was associated with the 45,X line without other karyotypic changes. Non-clonal aberrations were observed in 11 cases; in 3 cases these non-clonal losses were observed in serial samples. In a sex-mismatched BMT case, -(X or Y) in 4 cells was one of the first pathogenetic signs of leukemia relapse. These data suggest (1) interpretation of sex chromosome loss in leukemia must be made with caution and after a baseline sample, (2) non-clonal aberrations should be recorded, and (3) -(X or Y) appears to have pathogenetic significance in the myeloid disorders. Multi-institutional studies are needed to define (1) the incidence of leukemia in pts with constitutional sex chromosome anomalies and (2) the incidence and significance of sex chromosome aberrations as the primary (sole) cytogenetic aberration in leukemia.

  7. Carrier Multiplication in Semiconductor Nanocrystals: Theoretical Screening of Candidate Materials Based on Band-Structure Effects

    SciTech Connect (OSTI)

    Luo, J. W.; Franceschetti, A.; Zunger, A.

    2008-01-01

    Direct carrier multiplication (DCM) occurs when a highly excited electron-hole pair decays by transferring its excess energy to the electrons rather than to the lattice, possibly exciting additional electron-hole pairs. Atomistic electronic structure calculations have shown that DCM can be induced by electron-hole Coulomb interactions, in an impact-ionization-like process whose rate is proportional to the density of biexciton states {rho}{sub XX}. Here we introduce a DCM 'figure of merit' R{sub 2}(E) which is proportional to the ratio between the biexciton density of states {rho}{sub XX} and the single-exciton density of states {rho}{sub x}, restricted to single-exciton and biexciton states that are coupled by Coulomb interactions. Using R{sub 2}(E), we consider GaAs, InAs, InP, GaSb, InSb, CdSe, Ge, Si, and PbSe nanocrystals of different sizes. Although DCM can be affected by both quantum-confinement effects (reflecting the underly electronic structure of the confined dot-interior states) and surface effects, here we are interested to isolate the former. To this end the nanocrystal energy levels are obtained from the corresponding bulk band structure via the truncated crystal approximation. We find that PbSe, Si, GaAs, CdSe, and InP nanocrystals have larger DCM figure of merit than the other nanocrystals. Our calculations suggest that high DCM efficiency requires high degeneracy of the corresponding bulk band-edge states. Interestingly, by considering band structure effects we find that as the dot size increases the DCM critical energy E{sub 0} (the energy at which R{sub 2}(E) becomes {ge}1) is reduced, suggesting improved DCM. However, whether the normalized E{sub 0}/{var_epsilon}{sub g} increases or decreases as the dot size increases depends on dot material.

  8. Methods for separating oxygen from oxygen-containing gases

    DOE Patents [OSTI]

    Mackay, Richard; Schwartz, Michael; Sammells, Anthony F.

    2000-01-01

    This invention provides mixed conducting metal oxides particularly useful for the manufacture of catalytic membranes for gas-phase oxygen separation processes. The materials of this invention have the general formula: A.sub.x A'.sub.x A".sub.2-(x+x') B.sub.y B'.sub.y B".sub.2-(y+y') O.sub.5+z ; where x and x' are greater than 0; y and y' are greater than 0; x+x' is less than or equal to 2; y+y' is less than or equal to 2; z is a number that makes the metal oxide charge neutral; A is an element selected from the f block lanthanide elements; A' is an element selected from Be, Mg, Ca, Sr, Ba and Ra; A" is an element selected from the f block lanthanides or Be, Mg, Ca, Sr, Ba and Ra; B is an element selected from the group consisting of Al, Ga, In or mixtures thereof; and B' and B" are different elements and are independently selected from the group of elements Mg or the d-block transition elements. The invention also provides methods for oxygen separation and oxygen enrichment of oxygen deficient gases which employ mixed conducting metal oxides of the above formula. Examples of the materials used for the preparation of the membrane include A.sub.x Sr.sub.x' B.sub.y Fe.sub.y' Co.sub.2-(y+y') O.sub.5+z, where x is about 0.3 to about 0.5, x' is about 1.5 to about 1.7, y is 0.6, y' is between about 1.0 and 1.4 and B is Ga or Al.

  9. SU-E-T-421: Feasibility Study of Volumetric Modulated Arc Therapy with Constant Dose Rate for Endometrial Cancer

    SciTech Connect (OSTI)

    Yang, R; Wang, J

    2014-06-01

    Purpose: To investigate the feasibility, efficiency, and delivery accuracy of volumetric modulated arc therapy with constant dose rate (VMAT-CDR) for whole-pelvic radiotherapy (WPRT) of endometrial cancer. Methods: The nine-Field intensity-modulated radiotherapy (IMRT), VMAT with variable dose-rate (VMAT-VDR), and VMAT-CDR plans were created for 9 patients with endometrial cancer undergoing WPRT. The dose distribution of planning target volume (PTV), organs at risk (OARs), and normal tissue (NT) were compared. The monitor units (MUs) and treatment delivery time were also evaluated. For each VMAT-CDR plan, a dry Run was performed to assess the dosimetric accuracy with MatriXX from IBA. Results: Compared with IMRT, the VMAT-CDR plans delivered a slightly greater V20 of the bowel, bladder, pelvis bone, and NT, but significantly decreased the dose to the high-dose region of the rectum and pelvis bone. The MUs Decreased from 1105 with IMRT to 628 with VMAT-CDR. The delivery time also decreased from 9.5 to 3.2 minutes. The average gamma pass rate was 95.6% at the 3%/3 mm criteria with MatriXX pretreatment verification for 9 patients. Conclusion: VMAT-CDR can achieve comparable plan quality with significant shorter delivery time and smaller number of MUs compared with IMRT for patients with endometrial cancer undergoing WPRT. It can be accurately delivered and be an alternative to IMRT on the linear accelerator without VDR capability. This work is supported by the grant project, National Natural; Science Foundation of China (No. 81071237)

  10. Characterization and use of a 2D-array of ion chambers for brachytherapy dosimetric quality assurance

    SciTech Connect (OSTI)

    Yewondwossen, Mammo

    2012-10-01

    The two-dimensional (2D) ionization chamber array MatriXX Evolution is one of the 2D ionization chamber arrays developed by IBA Dosimetry (IBA Dosimetry, Germany) for megavoltage real-time absolute 2D dosimetry and verification of intensity-modulated radiation therapy (IMRT). The purpose of this study was to (1) evaluate the performance of ion chamber array for submegavoltage range brachytherapy beam dose verification and quality assurance (QA) and (2) use the end-to-end dosimetric evaluation that mimics a patient treatment procedure and confirm the primary source strength calibration agrees in both the treatment planning system (TPS) and treatment delivery console computers. The dose linearity and energy dependence of the 2D ion chamber array was studied using kilovoltage X-ray beams (100, 180 and 300 kVp). The detector calibration factor was determined using 300 kVp X-ray beams so that we can use the same calibration factor for dosimetric verification of high-dose-rate (HDR) brachytherapy. The phantom used for this measurement consists of multiple catheters, the IBA MatriXX detector, and water-equivalent slab of RW3 to provide full scattering conditions. The treatment planning system (TPS) (Oncentra brachy version 3.3, Nucletron BV, Veenendaal, the Netherlands) dose distribution was calculated on the computed tomography (CT) scan of this phantom. The measured and TPS calculated distributions were compared in IBA Dosimetry OmniPro-I'mRT software. The quality of agreement was quantified by the gamma ({gamma}) index (with 3% delta dose and distance criterion of 2 mm) for 9 sets of plans. Using a dedicated phantom capable of receiving 5 brachytherapy intralumenal catheters a QA procedure was developed for end-to-end dosimetric evaluation for routine QA checks. The 2D ion chamber array dose dependence was found to be linear for 100-300 kVp and the detector response (k{sub user}) showed strong energy dependence for 100-300 kVp energy range. For the Ir-192 brachytherapy

  11. Fatigue crack growth behavior of Al-Li alloy 1441

    SciTech Connect (OSTI)

    Prakash, R.V.; Parida, B.K.

    1995-12-31

    Fatigue crack growth behavior of Al-Li alloy 1441 having a marginally lower lithium content, compared to 80xx and 20xx series Al-Li alloys is presented in this paper. This investigation was conducted on single edge tension--SE(T)--specimens, under constant amplitude as well as under MiniLCA flight spectrum loading with the specific objective of determining the effects of stress ratio, orientation, thickness and cladding. Three thicknesses were considered: 1.2 mm(clad and unclad), 2.0 mm(clad and unclad) and 8.0 mm unclad. Constant amplitude fatigue tests were conducted at stress ratios of {minus}0.3, 0.1 and 0.7. Testing was performed under ambient conditions and along three orientations, namely L-T, T-L and L+45 degrees. Crack growth characteristics of this alloy are compared with that of BS:L73 (2014-T4 equivalent) for assessing the possibility of replacing BS:L73. Significant effect of stress ratio on crack growth rate was observed in all thicknesses. However, in case of 1.2 and 2.0 mm thick sheets, the effect was minimal at intermediate-crack growth regime. The orientation of the specimen does not adversely affect the fatigue crack growth behavior of 8.0 mm and 2.0 mm thick specimens. However, for 1.2 mm unclad sheet crack growth resistance in L-T direction was found to be superior to that along T-L direction. In majority of test cases considered, no significant effect was observed on crack growth rate due to thickness or cladding. Crack growth characteristics of Al-Li alloy 1441 and Al-Cu alloy BS:L73 under constant amplitude as well as MiniLCA spectrum loading are similar in the low and intermediate-crack growth rate regime. Based on these observations, it is felt that this Al-Li alloy has the potential for future aerospace applications.

  12. SU-E-T-415: An Ionization Chamber Array with High Spatial Resolution for External Beam Radiotherapy

    SciTech Connect (OSTI)

    Togno, M; Wilkens, J; Menichelli, D

    2014-06-01

    Purpose: To characterize an ionization chamber array technology with high spatial resolution and high charge collection efficiency for external beam radiotherapy. Methods: The prototype under test is a linear array of air vented ionization chambers developed by IBA Dosimetry, consisting of 80 pixels with 3.5mm spatial resolution and 4mm{sup 3} sensitive volume. The detector was characterized in a plastic phantom with {sup 60} Co radiation and MV X-rays from an ELEKTA Agility LINAC (with flattened and unflattened beam qualities). Bias voltage was varied in order to evaluate charge collection efficiency. A commercial array of ionization chambers (MatriXX Evolution, IBA Dosimetry) and an amorphous silicon flat panel in direct conversion configuration were used as references. Results: Repeatability (0.4%) and stability under continuous gamma irradiation (0.3%) are very good, in spite of low active volume and sensitivity (?200pC/Gy). Charge collection efficiency is higher than 99% already at 150V with ?2mGy dose per pulse, leading to a 1.1% sensitivity change with dose per pulse in the range 0.09-2mGy (covering all flattened and unflattened applications). Measured dose profiles are in agreement with MatriXX for fields larger than 22cm{sup 2}, in which case the linear array offers a much better characterization of the penumbra region. Down to 11cm{sup 2}, measured profiles are in very good agreement with the flat panel. Conclusion: The array represents a valuable tool for the characterization of treatment fields in which high spatial resolution is required, together with the dosimetric performance of air vented ionization chambers. Such a technology would be particularly valuable in association with advanced treatment modalities such as rotational radiotherapy, stereotactic treatments (even with unflattened beam qualities) and proton therapy, due to the insensitivity of the chambers on dose per pulse. In the future, a two dimensional prototype based on this technology

  13. ‘Hard’ crystalline lattice in the Weyl semimetal NbAs

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

    Luo, Yongkang; Ghimire, N. J.; Bauer, E. D.; Thompson, J. D.; Ronning, F.

    2016-01-14

    Here, we report the effect of hydrostatic pressure on the magnetotransport properties of the Weyl semimetal NbAs. Subtle changes can be seen in the ρxx(T) profiles with pressure up to 2.31 GPa. The Fermi surfaces undergo an anisotropic evolution under pressure: the extremal areas slightly increase in the kx-ky plane, but decrease in the kz-ky(kx) plane. The topological features of the two pockets observed at atmospheric pressure, however, remain unchanged at 2.31 GPa. No superconductivity can be seen down to 0.3 K for all the pressures measured. By fitting the temperature dependence of specific heat to the Debye model, wemore » obtain a small Sommerfeld coefficient γ0=0.09(1) mJ (mol•K2)-1 and a large Debye temperature, θD=450(9) K, confirming a 'hard' crystalline lattice that is stable under pressure. We also studied the Kadowaki–Woods ratio of this low-carrier-density massless system, RKW=3.2 x 104 μΩ cm mol2 K2 J-2. After we account for the small carrier density in NbAs, this RKW indicates a suppressed transport scattering rate relative to other metals.« less

  14. Improved removal of sticky and light contaminants from wastepaper. Final report, April 1, 1995--December 31, 1997

    SciTech Connect (OSTI)

    Seifert, P.; Kelly, A.

    1998-03-01

    Work under this two-year cooperative agreement addresses improved removal of light and sticky contaminants from waste paper. Such contaminants occur in ever-increasing amounts, resulting from glues, labels, book bindings, packaging tapes, etc., all associated with the waste paper stream. Despite various cleaning steps in the paper mill recycling systems, residual contamination remains, causing big problems with the product quality and with paper machine and converting operations. Some grades cannot be recycled at all. Stickies are truly a barrier against increased paper recycling. The stickies problem was attacked in four project segments--three of those have yielded tangible results. One segment has been outstanding in its success; namely, the development of a centrifugal reverse cleaning system consisting of primary and secondary stages, which have unparalleled high efficiency in the removal of light and sticky contaminants. This cleaning system, consists of primary XTREME and secondary XX-Clone units. Another segment of this work, washing wax contaminated old corrugated wastepaper (OCC), also has resulted in the new Xtrax process which was released for sale.

  15. Limits on Variations in Fundamental Constants from 21-cm and Ultraviolet Quasar Absorption Lines

    SciTech Connect (OSTI)

    Tzanavaris, P.; Webb, J.K.; Flambaum, V.V.; Curran, S.J.; Murphy, M.T.

    2005-07-22

    Quasar absorption spectra at 21-cm and UV rest wavelengths are used to estimate the time variation of x{identical_to}{alpha}{sup 2}g{sub p}{mu}, where {alpha} is the fine structure constant, g{sub p} the proton g factor, and m{sub e}/m{sub p}{identical_to}{mu} the electron/proton mass ratio. Over a redshift range 0.24 < or approx. z{sub abs} < or approx. 2.04, <{delta}x/x>{sub total}{sup weighted}=(1.17{+-}1.01)x10{sup -5}. A linear fit gives x/x=(-1.43{+-}1.27)x10{sup -15} yr{sup -1}. Two previous results on varying {alpha} yield the strong limits {delta}{mu}/{mu}=(2.31{+-}1.03)x10{sup -5} and {delta}{mu}/{mu}=(1.29{+-}1.01)x10{sup -5}. Our sample, 8x larger than any previous, provides the first direct estimate of the intrinsic 21-cm and UV velocity differences {approx}6 km s{sup -1}.

  16. Compactification of Patterns by a Singular Convection or Stress

    SciTech Connect (OSTI)

    Rosenau, Philip

    2007-12-07

    A wide variety of propagating disturbances in physical systems are described by equations whose solutions lack a sharp propagating front. We demonstrate that presence of particular nonlinearities may induce such fronts. To exemplify this idea, we study both dissipative u{sub t}+{partial_derivative}{sub x}f(u)=u{sub xx} and dispersive u{sub t}+{partial_derivative}{sub x}f(u)+u{sub xxx}=0 patterns, and show that a weakly singular convection f(u)=-u{sup {alpha}}+u{sup m}, 0<{alpha}<1

  17. Electronic structure of antifluorite Cu{sub 2}X (X = S, Se, Te) within the modified Becke-Johnson potential plus an on-site Coulomb U

    SciTech Connect (OSTI)

    Zhang, Yubo; Wang, Youwei; Xi, Lili; Qiu, Ruihao; Shi, Xun; Zhang, Peihong E-mail: pzhang3@buffalo.edu; Beijing Computational Science Research Center, Beijing 100084 ; Zhang, Wenqing E-mail: pzhang3@buffalo.edu; School of Chemistry and Chemical Engineering, and Sate Key Laboratory of Coordination Chemistry, Nanjing University, Jiangsu 210093

    2014-02-21

    The traditional photon absorbers Cu{sub 2?x}X (X = S, Se, and Te) have regained significant research attention in the search of earth-abundant photovoltaic materials. These moderate- and narrow-gap materials have also been shown to exhibit excellent thermoelectric properties recently. However, semimetallic band structures with inverted band orderings are predicted for antifluorite structure Cu{sub 2}X using density functional theory with the local density approximation or the generalized gradient approximation. We find that semiconducting band structures and normal band orderings can be obtained using the modified Becke-Johnson potential plus an on-site Coulomb U (the mBJ+U approach), which is consistent with our earlier finding for diamond-like Cu-based multinary semiconductors [Y. Zhang, J. Zhang, W. Gao, T. A. Abtew, Y. Wang, P. Zhang, and W. Zhang, J. Chem. Phys. 139, 184706 (2013)]. The trend of the chemical bonding of Cu{sub 2}X is analyzed, which shows that the positions of the valence band maximum and conduction band minimum are strongly affected by the inter-site pd and intra-site sp hybridizations, respectively. The calculated gaps of Cu{sub 2}S and Cu{sub 2}Se still seem to be underestimated compared with experimental results. We also discuss the effects of different structural phases and Cu disordering and deficiency on the bandgaps of these materials.

  18. Solid state proton and electron mediating membrane and use in catalytic membrane reactors

    DOE Patents [OSTI]

    White, James H.; Schwartz, Michael; Sammells, Anthony F.

    1998-01-01

    This invention provides catalytic proton and electron mediating membranes useful in catalytic reactors. The membranes have an oxidation and a reduction surface and comprise a single-phase mixed metal oxide material of the formula: AB.sub.1-x B'.sub.x O.sub.3-y wherein A is selected from Ca, Sr or Ba ions; B is selected from Ce, Tb, Pr, or Th ions; B' is selected from Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Al, Ga, or In ions, or combinations thereof; and x is greater than or equal to 0.02 and less than or equal to 0.5. The membranes can further comprise a catalyst on either the oxidation or reduction surface, or both. Membranes include those which are fabricated-by combining powders of metal oxides or metal carbonates of metal A ion, metal B ion and metal B' ion such that the stoichiometric ratio A:B:B' is 1:1-x:x where 0.2.ltoreq..times.0.5, repeatedly calcining and milling the combined powders until a single-phase material is obtained and pressing and sintering the singlephase material to obtain a membrane.

  19. Printability and inspectability of programmed pit defects on teh masks in EUV lithography

    SciTech Connect (OSTI)

    Kang, I.-Y.; Seo, H.-S.; Ahn, B.-S.; Lee, D.-G.; Kim, D.; Huh, S.; Koh, C.-W.; Cha, B.; Kim, S.-S.; Cho, H.-K.; Mochi, I.; Goldberg, K. A.

    2010-03-12

    Printability and inspectability of phase defects in ELlVL mask originated from substrate pit were investigated. For this purpose, PDMs with programmed pits on substrate were fabricated using different ML sources from several suppliers. Simulations with 32-nm HP L/S show that substrate pits with below {approx}20 nm in depth would not be printed on the wafer if they could be smoothed by ML process down to {approx}1 nm in depth on ML surface. Through the investigation of inspectability for programmed pits, minimum pit sizes detected by KLA6xx, AIT, and M7360 depend on ML smoothing performance. Furthermore, printability results for pit defects also correlate with smoothed pit sizes. AIT results for pattemed mask with 32-nm HP L/S represents that minimum printable size of pits could be {approx}28.3 nm of SEVD. In addition, printability of pits became more printable as defocus moves to (-) directions. Consequently, printability of phase defects strongly depends on their locations with respect to those of absorber patterns. This indicates that defect compensation by pattern shift could be a key technique to realize zero printable phase defects in EUVL masks.

  20. Generating unstructured nuclear reactor core meshes in parallel

    SciTech Connect (OSTI)

    Jain, Rajeev; Tautges, Timothy J.

    2014-10-24

    Recent advances in supercomputers and parallel solver techniques have enabled users to run large simulations problems using millions of processors. Techniques for multiphysics nuclear reactor core simulations are under active development in several countries. Most of these techniques require large unstructured meshes that can be hard to generate in a standalone desktop computers because of high memory requirements, limited processing power, and other complexities. We have previously reported on a hierarchical lattice-based approach for generating reactor core meshes. Here, we describe efforts to exploit coarse-grained parallelism during reactor assembly and reactor core mesh generation processes. We highlight several reactor core examples including a very high temperature reactor, a full-core model of the Korean MONJU reactor, a ¼ pressurized water reactor core, the fast reactor Experimental Breeder Reactor-II core with a XX09 assembly, and an advanced breeder test reactor core. The times required to generate large mesh models, along with speedups obtained from running these problems in parallel, are reported. A graphical user interface to the tools described here has also been developed.

  1. Materials and methods for the separation of oxygen from air

    DOE Patents [OSTI]

    MacKay, Richard; Schwartz, Michael; Sammells, Anthony F.

    2003-07-15

    Metal oxides particularly useful for the manufacture of catalytic membranes for gas-phase oxygen separation processes having the formula: O.sub.5+z where: x and x' are greater than 0; y and y' are greater than 0; x+x' is equal to 2; y+y' is less than or equal to 2; z is a number that makes the metal oxide charge neutral; A is an element selected from the lanthanide elements; A' is an element selected from Be, Mg, Ca, Sr, Ba and Ra; A" is an element selected from the f block lanthanides, Be, Mg, Ca, Sr, Ba and Ra; B is an element selected from the group consisting of Al, Ga, In or mixtures thereof and B" is Co or Mg, with the exception that when B" is Mg, A' and A" are not Mg. The metal oxides are useful for preparation of dense membranes which may be formed from dense thin films of the mixed metal oxide on a porous metal oxide element. The invention also provides methods and catalytic reactors for oxygen separation and oxygen enrichment of oxygen deficient gases which employ mixed conducting metal oxides of the above formula.

  2. Overview of the US Department of Energy Master Safeguards and Security Agreement program

    SciTech Connect (OSTI)

    Billings, M.P.; Duncan, M.R.; Craig, J.R.

    1988-06-01

    The Master Safeguards and Security Agreement establishes a contract between the US Department of Energy-Headquarters and a US Department of Energy regional Operations Office regarding protection strategies, protection system performance, and acceptability of risks for US Department of Energy Safeguards and Security interests at a facility or site. An approved Master Safeguards and Security Agreement defines the protection system performance baseline for evaluations, inspections, and audits, and can introduce exceptions to US Department of Energy orders. Responsibilities and authorities for development and approval of a Master Safeguards and Security Agreement are outlined in US Department of Energy Order 5630.13, ''Master Safeguards and Security Agreement'' and US Department of Energy Order 5630.xx, ''Safeguards and Security Planning Program'' (draft). To date, 14 Master Safeguards and Security Agreements have been approved by the US Department of Energy-Headquarters and about 34 are in preparation or review. A total of approximately 50 are anticipated before completion of the program. The Master Safeguards and Security agreement program has been positively received by both the US Department of Energy-Headquarters and the US Department of Energy Operations Offices, because it provides visibility as to the effectiveness of Safeguards and Security protection systems and affords a sensible foundation for security planning based on risk. 6 refs., 3 figs., 6 tabs.

  3. Generating unstructured nuclear reactor core meshes in parallel

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

    Jain, Rajeev; Tautges, Timothy J.

    2014-10-24

    Recent advances in supercomputers and parallel solver techniques have enabled users to run large simulations problems using millions of processors. Techniques for multiphysics nuclear reactor core simulations are under active development in several countries. Most of these techniques require large unstructured meshes that can be hard to generate in a standalone desktop computers because of high memory requirements, limited processing power, and other complexities. We have previously reported on a hierarchical lattice-based approach for generating reactor core meshes. Here, we describe efforts to exploit coarse-grained parallelism during reactor assembly and reactor core mesh generation processes. We highlight several reactor coremore » examples including a very high temperature reactor, a full-core model of the Korean MONJU reactor, a ¼ pressurized water reactor core, the fast reactor Experimental Breeder Reactor-II core with a XX09 assembly, and an advanced breeder test reactor core. The times required to generate large mesh models, along with speedups obtained from running these problems in parallel, are reported. A graphical user interface to the tools described here has also been developed.« less

  4. Mixed Waste Integrated Program Quality Assurance requirements plan

    SciTech Connect (OSTI)

    Not Available

    1994-04-15

    Mixed Waste Integrated Program (MWIP) is sponsored by the US Department of Energy (DOE), Office of Technology Development, Waste Management Division. The strategic objectives of MWIP are defined in the Mixed Waste Integrated Program Strategic Plan, and expanded upon in the MWIP Program Management Plan. This MWIP Quality Assurance Requirement Plan (QARP) applies to mixed waste treatment technologies involving both hazardous and radioactive constituents. As a DOE organization, MWIP is required to develop, implement, and maintain a written Quality Assurance Program in accordance with DOE Order 4700.1 Project Management System, DOE Order 5700.6C, Quality Assurance, DOE Order 5820.2A Radioactive Waste Management, ASME NQA-1 Quality Assurance Program Requirements for Nuclear Facilities and ANSI/ASQC E4-19xx Specifications and Guidelines for Quality Systems for Environmental Data Collection and Environmental Technology Programs. The purpose of the MWIP QA program is to establish controls which address the requirements in 5700.6C, with the intent to minimize risks and potential environmental impacts; and to maximize environmental protection, health, safety, reliability, and performance in all program activities. QA program controls are established to assure that each participating organization conducts its activities in a manner consistent with risks posed by those activities.

  5. A study of nitrogenation of a NdFe{sub 12-x}Mo{sub x} compound by in situ neutron powder diffraction.

    SciTech Connect (OSTI)

    Ding, Y.; Lin, J.; Loong, C.-K.; Short, S. M.

    1997-11-18

    The effects on the crystal lattice of a NdFe{sub 12{minus}x}Mo{sub x}(x {approx_equal} 1.7) compound which contained {approximately}12 vol% of bcc-Fe were studied by neutron powder diffraction during controlled nitrogenation over the 25-600 C temperature range. The sample inside the furnace was connected to a closed volume of ultra-pure nitrogen gas while neutron data were collected over regular time intervals during sequential heating. Substantial nitrogen absorption occurred between 500 to 600 C. During the nitrogenation process the NdFe{sub 12{minus}x}Mo{sub x}N{sub y} lattice expanded while the bcc-Fe lattice contracted. An increasing decomposition of the compound into bcc-Fe at 600 C was observed. The average size of the NdFe{sub 12{minus}x}Mo{sub x}N{sub y} crystalline grains decreased starting at {approximately}300 C, reaching a minimum at {approximately}500 C and then increased markedly at higher temperatures. The development of lattice strains, on the other hand, showed an opposite trend, i.e., a maximum at 500 C. A correlation of structural modification of the crystalline phases and the nitrogenation process is discussed.

  6. Combustion performance of porous silicon-based energetic composites

    SciTech Connect (OSTI)

    Mason, Benjamin Aaron; Son, Steve F; Asay, Blaine W; Cho, Kevin Y

    2009-01-01

    The combustion performance of oxidizer filled porous silicon(PSi) was studied. PSi samples with diameters of 2.54 cm were fabricated by electrochemical etching. The % porosity of the samples ranged from 55 to 82%. The samples were cut into 3-5 mm strips and filled with the oxidizers NaClO{sub 4} x 1H{sub 2}O, Ca(ClO{sub 4}){sub 2} x 4H{sub 2}O, S and perfluoropolyether (PFPE). The filled PSi was then burned by igniting the sample with a hot NiChrome{trademark} wire. The burns were recorded using high speed photography from which bring rates were calculated. That burning rates showed a strong dependency on quality of the oxidizer loading. The % porosity did not appear to have a direct affect on the burning rates for those studied. PSi loaded with NaClO{sub 4} x 1H{sub 2}O produced burning rates that ranged from 216-349 cm/s. PSi loaded with Ca(ClO{sub 4}){sub x}x 4 H{sub 2}O had burning rates of 154-285 cm/s. An S filled PSi sample burned a rate of 16 to 290 cm/s, and perfluoropolyether loaded PSi burned at a rate of 1.4 cm/s.

  7. High Temperature, Low Relative Humidity, Polymer-type Membranes Based on Disulfonated Poly(arylene ether) Block and Random Copolymers Optionally Incorporating Protonic Conducting Layered Water insoluble Zirconium Fillers

    SciTech Connect (OSTI)

    McGrath, James E.; Baird, Donald G.

    2010-06-03

    Our research group has been engaged in the past few years in the synthesis of biphenol based partially disulfonated poly(arylene ether sulfone) random copolymers as potential PEMs. This series of polymers are named as BPSH-xx, where BP stands for biphenol, S stands for sulfonated, H stands for acidified and xx represents the degree of disulfonation. All of these sulfonated copolymers phase separate to form nano scale hydrophilic and hydrophobic morphological domains. The hydrophilic phase containing the sulfonic acid moieties causes the copolymer to absorb water. Water confined in hydrophilic pores in concert with the sulfonic acid groups serve the critical function of proton (ion) conduction and water transport in these systems. Both Nafion and BPSH show high proton conductivity at fully hydrated conditions. However proton transport is especially limited at low hydration level for the BPSH random copolymer. It has been observed that the diffusion coefficients of both water and protons change with the water content of the pore. This change in proton and water transport mechanisms with hydration level has been attributed to the solvation of the acid groups and the amount of bound and bulk-like water within a pore. At low hydration levels most of the water is tightly associated with sulfonic groups and has a low diffusion coefficient. This tends to encourage isolated domain morphology. Thus, although there may be significant concentrations of protons, the transport is limited by the discontinuous morphological structure. Hence the challenge lies in how to modify the chemistry of the polymers to obtain significant protonic conductivity at low hydration levels. This may be possible if one can alter the chemical structure to synthesize nanophase separated ion containing block copolymers. Unlike the BPSH copolymers, where the sulfonic acid groups are randomly distributed along the chain, the multiblock copolymers will feature an ordered sequence of hydrophilic and

  8. SU-E-T-350: Verification of Gating Performance of a New Elekta Gating Solution: Response Kit and Catalyst System

    SciTech Connect (OSTI)

    Xie, X; Cao, D; Housley, D; Mehta, V; Shepard, D

    2014-06-01

    Purpose: In this work, we have tested the performance of new respiratory gating solutions for Elekta linacs. These solutions include the Response gating and the C-RAD Catalyst surface mapping system.Verification measurements have been performed for a series of clinical cases. We also examined the beam on latency of the system and its impact on delivery efficiency. Methods: To verify the benefits of tighter gating windows, a Quasar Respiratory Motion Platform was used. Its vertical-motion plate acted as a respiration surrogate and was tracked by the Catalyst system to generate gating signals. A MatriXX ion-chamber array was mounted on its longitudinal-moving platform. Clinical plans are delivered to a stationary and moving Matrix array at 100%, 50% and 30% gating windows and gamma scores were calculated comparing moving delivery results to the stationary result. It is important to note that as one moves to tighter gating windows, the delivery efficiency will be impacted by the linac's beam-on latency. Using a specialized software package, we generated beam-on signals of lengths of 1000ms, 600ms, 450ms, 400ms, 350ms and 300ms. As the gating windows get tighter, one can expect to reach a point where the dose rate will fall to nearly zero, indicating that the gating window is close to beam-on latency. A clinically useful gating window needs to be significantly longer than the latency for the linac. Results: As expected, the use of tighter gating windows improved delivery accuracy. However, a lower limit of the gating window, largely defined by linac beam-on latency, exists at around 300ms. Conclusion: The Response gating kit, combined with the C-RAD Catalyst, provides an effective solution for respiratorygated treatment delivery. Careful patient selection, gating window design, even visual/audio coaching may be necessary to ensure both delivery quality and efficiency. This research project is funded by Elekta.

  9. The role of FISH in prenatal diagnosis

    SciTech Connect (OSTI)

    Kulch, P.; Crandall, B.F.; Hsi, C.

    1994-09-01

    FISH provides a cytogenetic technique which is useful in defining de novo translocations, deletions, insertions, and marker chromosomes in prenatal diagnosis. While the cytogenetic interpretation may be improved with FISH, it may not resolve questions concerning prognosis and options which are genetic counseling issues. Two recent cases illustrate this. Case 1 involved a 45,X/46,X,+mar karyotype from amniocentesis. 22/50 cells had 46,X/46,X+mar; 28/50 cells had 45,X. The marker was smaller than a G. C banding did not confirm this as a Y. The father`s peripheral blood study was normal and his Y did not resemble the marker. It appeared likely that the marker was a structurally abnormal Y since male external genitalia were detected by fetal ultrasound. FISH using alpha- and classical (DYZ1/DYZ3) satellite Y-specific probes did not identify the marker as a Y. Case 2 was a fetus which had a de novo translocation 46,XX,t(3;11)(q26.3;q21) by amniocentesis and confirmed by UBS. FISH for the number 3 and 11 chromosomes confirmed this rearrangement. The parents were advised of the risk associated with a de novo balanced translocation. The possible prognosis for these two different fetuses was not changed by the FISH analysis. FISH, while helpful, is only one aspect of the studies done to provide more accurate genetic counseling to parents; the pregnancy/family history, fetal ultrasound, other possible prenatal studies and pregnancy outcome from perspective studies compose other important aspects that are not mutually exclusive.

  10. Conjunction of Multizone Infiltration Specialists (COMIS) fundamentals

    SciTech Connect (OSTI)

    Feustel, H.E.; Rayner-Hooson, A.

    1990-05-01

    The COMIS workshop (Conjunction of Multizone Infiltration Specialists) was a joint research effort to develop a multizone infiltration mode. This workshop (October 1988--September 1989) was hosted by the Energy Performance of Buildings Group at Lawrence Berkeley Laboratory's Applied Science Division. The task of the workshop was to develop a detailed multizone infiltration program taking crack flow, HVAC-systems, single-sided ventilation and transport mechanism through large openings into account. This work was accomplished not by investigating into numerical description of physical phenomena but by reviewing the literature for the best suitable algorithm. The numerical description of physical phenomena is clearly a task of IEA-Annex XX Air Flow Patterns in Buildings,'' which will be finished in September 1991. Multigas tracer measurements and wind tunnel data will be used to check the model. The agenda integrated all participants' contributions into a single model containing a large library of modules. The user-friendly program is aimed at researchers and building professionals. From its announcement in December 1986, COMIS was well received by the research community. Due to the internationality of the group, several national and international research programmes were co-ordinated with the COMIS workshop. Colleagues for France, Italy, Japan, The Netherlands, People's Republic of China, Spain, Sweden, Switzerland, and the United States of America were working together on the development of the model. Even though this kind of co-operation is well known in other fields of research, e.g., high energy physics; for the field of building physics it is a new approach. This document contains an overview about infiltration modelling as well as the physics and the mathematics behind the COMIS model. 91 refs., 38 figs., 9 tabs.

  11. SU-E-T-219: Investigation of IMRT Out-Of-Field Dose Calculation Accuracy for a Commercial Treatment Planning System

    SciTech Connect (OSTI)

    2014-06-01

    Purpose: Inaccuracies in out-of-field calculations could lead to underestimation of dose to organs-at-risk. This study evaluates the dose calculation accuracy of a model-based calculation algorithm at points outside the primary treatment field for an intensity modulated radiation therapy (IMRT) plan using experimental measurements. Methods: The treatment planning system investigated is Varian Eclipse V.10 with Analytical Anisotropic Algorithm (AAA). The IMRT fields investigated are from real patient treatment plans. The doses from a dynamic (DMLC) IMRT brain plan were calculated and compared with measured doses at locations outside the primary treatment fields. Measurements were performed with a MatriXX system (2-D chamber array) placed in solid water. All fields were set vertically incident on the phantom and were 9 cm 6 cm or smaller. The dose was normalized to the central axis for points up to 15 cm off isocenter. The comparisons were performed at depths of 2, 10, 15, and 20 cm Results: The measurements have shown that AAA calculations underestimate doses at points outside the primary treatment field. The underestimation occurs at 2 cm depth and decreases down to a factor of 2 as depth increases to 20 cm. In low dose (<2% of target dose) regions outside the primary fields the local dose underestimations can be >200% compared to measured doses. Relative to the plan target dose, the measured doses to points outside the field were less than 1% at shallow depths and less than 2% at greater depths. Conclusion: Compared to measurements, the AAA algorithm underestimated the dose at points outside the treatment field with the greatest differences observed at shallow depths. Despite large local dose uncertainties predicted by the treatment planning system, the impact of these uncertainties is expected to be insignificant as doses at these points were less than 1-2% of the prescribed treatment dose.

  12. Prediction and Monitoring Systems of Creep-Fracture Behavior of 9Cr-1Mo Steels for Teactor Pressure Vessels

    SciTech Connect (OSTI)

    Potirniche, Gabriel; Barlow, Fred D.; Charit, Indrajit; Rink, Karl

    2013-11-26

    A recent workshop on next-generation nuclear plant (NGNP) topics underscored the need for research studies on the creep fracture behavior of two materials under consideration for reactor pressure vessel (RPV) applications: 9Cr-1Mo and SA-5XX steels. This research project will provide a fundamental understanding of creep fracture behavior of modified 9Cr-1Mo steel welds for through modeling and experimentation and will recommend a design for an RPV structural health monitoring system. Following are the specific objectives of this research project: Characterize metallurgical degradation in welded modified 9Cr-1Mo steel resulting from aging processes and creep service conditions; Perform creep tests and characterize the mechanisms of creep fracture process; Quantify how the microstructure degradation controls the creep strength of welded steel specimens; Perform finite element (FE) simulations using polycrystal plasticity to understand how grain texture affects the creep fracture properties of welds; Develop a microstructure-based creep fracture model to estimate RPVs service life; Manufacture small, prototypic, cylindrical pressure vessels, subject them to degradation by aging, and measure their leak rates; Simulate damage evolution in creep specimens by FE analyses; Develop a model that correlates gas leak rates from welded pressure vessels with the amount of microstructural damage; Perform large-scale FE simulations with a realistic microstructure to evaluate RPV performance at elevated temperatures and creep strength; Develop a fracture model for the structural integrity of RPVs subjected to creep loads; and Develop a plan for a non-destructive structural health monitoring technique and damage detection device for RPVs.

  13. Comparison of Elekta VMAT with helical tomotherapy and fixed field IMRT: Plan quality, delivery efficiency and accuracy

    SciTech Connect (OSTI)

    Rao Min; Yang Wensha; Chen Fan; Sheng Ke; Ye Jinsong; Mehta, Vivek; Shepard, David; Cao Daliang

    2010-03-15

    Purpose: Helical tomotherapy (HT) and volumetric modulated arc therapy (VMAT) are arc-based approaches to IMRT delivery. The objective of this study is to compare VMAT to both HT and fixed field IMRT in terms of plan quality, delivery efficiency, and accuracy. Methods: Eighteen cases including six prostate, six head-and-neck, and six lung cases were selected for this study. IMRT plans were developed using direct machine parameter optimization in the Pinnacle{sup 3} treatment planning system. HT plans were developed using a Hi-Art II planning station. VMAT plans were generated using both the Pinnacle{sup 3} SmartArc IMRT module and a home-grown arc sequencing algorithm. VMAT and HT plans were delivered using Elekta's PreciseBeam VMAT linac control system (Elekta AB, Stockholm, Sweden) and a TomoTherapy Hi-Art II system (TomoTherapy Inc., Madison, WI), respectively. Treatment plan quality assurance (QA) for VMAT was performed using the IBA MatriXX system while an ion chamber and films were used for HT plan QA. Results: The results demonstrate that both VMAT and HT are capable of providing more uniform target doses and improved normal tissue sparing as compared with fixed field IMRT. In terms of delivery efficiency, VMAT plan deliveries on average took 2.2 min for prostate and lung cases and 4.6 min for head-and-neck cases. These values increased to 4.7 and 7.0 min for HT plans. Conclusions: Both VMAT and HT plans can be delivered accurately based on their own QA standards. Overall, VMAT was able to provide approximately a 40% reduction in treatment time while maintaining comparable plan quality to that of HT.

  14. SU-E-J-91: Novel Epitaxial Silicon Array for Quality Assurance in Photon and Proton Therapy

    SciTech Connect (OSTI)

    Talamonti, C; Zani, M; Scaringella, M; Bruzzi, M; Bucciolini, M; Menichelli, D; Friedl, F

    2014-06-01

    Purpose: to demonstrate suitability of a novel silicon array for measuring the dose properties of highly conformal photon and proton beams. Methods: prototype under test is a 24cm long linear array prototype, although the underlying technology is suitable to construct 2D arrays as well. It is based on a 64pixels monolithic sensor with 1mm pixel pitch, made of epitaxial ptype silicon. Thanks to design modularity, more sensors can be placed side by side without breaking pixel pitch. Flattened and unflattened photon beams, as well as proton radiation from a cyclotron in pencil beam scanning mode, were considered. Measurements of beam characteristics as percentage depth doses, dose profiles, output factors and energy response, which are necessary to deliver radiation with high precision and reliability, were performed. Results: Dose rate independence with photons was verified in the dose per pulse range 0.03 to 2mGy. Results clearly indicate nondependence of the detector sensitivity both for flattened and unflattened beams, with a variation of at most 0.5percentage. OFs were obtained for field with a lateral size ranging from 0.8cm to 16cm and the results are in good agreement with ion chamber A1SL, max difference less than 1.5percentage. Field sizes and beam penumbra were measured and compared to EBT film results. Concerning proton beams, sensitivity independence on dose rate was verified by changing the beam current in the interval 2-130Gy/s. Field sizes and beam penumbra measurements are in agreement with data taken with a scintillating 2D array with 0.5mm resolution IBA Lynx, and a better penumbra definition than an array of ionization chambers IBA MatriXX is reached. Conclusion: The device is a novel and valuable tool for QA both for photon and proton dose delivery. All measurements demonstrated its capability to measure with high spatial resolution many crucial properties of the RT beam.

  15. SciFri PM: Dosimetry06: Commissioning of a 3D patient specific QA system for hypofractionated prostate treatments

    SciTech Connect (OSTI)

    Rivest, R; Venkataraman, S; McCurdy, B

    2014-08-15

    The objective of this work is to commission the 6MV-SRS beam model in COMPASS (v2.1, IBA-Dosimetry) and validate its use for patient specific QA of hypofractionated prostate treatments. The COMPASS system consists of a 2D ion chamber array (MatriXX{sup Evolution}), an independent gantry angle sensor and associated software. The system can either directly calculate or reconstruct (using measured detector responses) a 3D dose distribution on the patient CT dataset for plan verification. Beam models are developed and commissioned in the same manner as a beam model is commissioned in a standard treatment planning system. Model validation was initially performed by comparing both COMPASS calculations and reconstructions to measured open field beam data. Next, 10 hypofractionated prostate RapidArc plans were delivered to both the COMPASS system and a phantom with ion chamber and film inserted. COMPASS dose distributions calculated and reconstructed on the phantom CT dataset were compared to the chamber and film measurements. The mean ( standard deviation) difference between COMPASS reconstructed dose and ion chamber measurement was 1.4 1.0%. The maximum discrepancy was 2.6%. Corresponding values for COMPASS calculation were 0.9 0.9% and 2.6%, respectively. The average gamma agreement index (3%/3mm) for COMPAS reconstruction and film was 96.7% and 95.3% when using 70% and 20% dose thresholds, respectively. The corresponding values for COMPASS calculation were 97.1% and 97.1%, respectively. Based on our results, COMPASS can be used for the patient specific QA of hypofractionated prostate treatments delivered with the 6MV-SRS beam.

  16. Chandra spectroscopy of MAXI J1305704: Detection of an infalling black hole disk wind?

    SciTech Connect (OSTI)

    Miller, J. M.; Maitra, D.; Reynolds, M. T.; Degenaar, N.; King, A. L.; Raymond, J.; Kallman, T. R.; Fabian, A. C.; Proga, D.; Reynolds, C. S.; Cackett, E. M.; Kennea, J. A.; Beardmore, A.

    2014-06-10

    We report on a high-resolution Chandra/HETG X-ray spectrum of the transient X-ray binary MAXI J1305704. A rich absorption complex is detected in the Fe L band, including density-sensitive lines from Fe XX, Fe XXI, and Fe XXII. Spectral analysis over three wavelength bands with a large grid of XSTAR photoionization models generally requires a gas density of n ? 10{sup 17} cm{sup 3}. Assuming a luminosity of L = 10{sup 37} erg s{sup 1}, fits to the 10-14 band constrain the absorbing gas to lie within r = (3.9 0.7) 10{sup 3} km from the central engine, or about r = 520 90 (M/5 M {sub ?}) r{sub g} , where r{sub g} = GM/c {sup 2}. At this small distance from the compact object, gas in stable orbits should have a gravitational redshift of z = v/c ? (3 1) 10{sup 3} (M/5 M {sub ?}), and any tenuous inflowing gas should have a free-fall velocity of v/c ? (6 1) 10{sup 2} (M/5 M {sub ?}){sup 1/2}. The best-fit single-zone photoionization models measure a redshift of v/c = (2.6-3.2) 10{sup 3}. Models with two absorbing zones provide significantly improved fits, and the additional zone is measured to have a redshift of v/c = (4.6-4.9) 10{sup 2} (models including two zones suggest slightly different radii and may point to lower densities). Thus, the observed shifts are broadly consistent with those expected at the photoionization radius. The absorption spectrum revealed in MAXI J1305704 may be best explained in terms of a 'failed wind' like those predicted in some recent numerical simulations of black hole accretion flows. The robustness of the velocity shifts was explored through detailed simulations with the Chandra/MARX ray-tracing package and analysis of the zeroth-order ACIS-S3 spectrum. These tests are particularly important given the anomalously large angle between the source and the optical axis in this observation. The simulations and ACIS spectrum suggest that the shifts are not instrumental; however, strong caution is warranted. We discuss

  17. SU-E-T-606: A Novel Integrated VMAT/IMRT Technique For the Treatment of Non-Small Cell Lung Cancer

    SciTech Connect (OSTI)

    Zhao, N; Yang, R; Wang, J

    2014-06-01

    Purpose: To investigate a novel Integrated VMAT/IMRT technique which combines volumetric modulated arc therapy (VMAT) and intensity modulated radiation therapy (IMRT) for non-small cell lung cancer (NSCLC). Methods: 2 partial arcs VMAT, 5-field IMRT and Integrated VMAT/IMRT plans were created for 17 patients with NSCLC. The Integrated VMAT/IMRT technique consisted of 2 partial VMAT arcs and 5 IMRT fields. The dose distribution of planning target volume (PTV) and organs at risk (OARs) for Integrated VMAT/IMRT was compared with IMRT and VMAT. The monitor units (MUs) and treatment delivery time were also evaluated. For each plan, a dry run was performed to assess the dosimetric accuracy with MatriXX from IBA. Results: Integrated VMAT/IMRT significantly improved the target conformity and homogeneity. The V30 of normal lung for Integrated plans was significantly lower than IMRT plans (8.4% vs 9.2%; p<0.05). The V5 and mean lung dose (MLD) of normal lung for Integrated plans were 9.8% and 4.6% lower than VMAT plans (p<0.05). The maximum dose of spinal cord for Integrated plans was 4.9 Gy lower than IMRT plans (p<0.05). The mean delivery time of IMRT, VMAT and Integrated plans was 280 s, 114 s, and 327 s, respectively. The mean MUs needed for IMRT, VMAT and Integrated plans were 933, 512, and 737, respectively. The gamma pass rates were beyond 90% at the 3%/3 mm criteria when the gantry angles were set to 0 for pretreatment verification. Conclusion: Integrated VMAT/IMRT technique significantly reduced V5, V10 and MLD of normal lung compared with VMAT, and the irradiated volume of the OARs receiving medium to high dose with fewer MUs compared with IMRT. Integrated VMAT/IMRT technique can be a feasible radiotherapy technique with better plan quality and accurately delivered on the linear accelerator. Ruijie Yang was funded by the grant project: National Natural Science Foundation of China (No. 81071237). Other authors have no competing interest for this work.

  18. SU-E-T-77: Comparison of 2D and 3D Gamma Analysis in Patient-Specific QA for Prostate VMAT Plans

    SciTech Connect (OSTI)

    Clemente, F; Perez, C

    2014-06-01

    Purpose: Patient-specific QA procedures for IMRT and VMAT are traditionally performed by comparing TPS calculations with measured single point values and plane dose distributions by means of gamma analysis. New QA devices permit us to calculate 3D dose distributions on patient anatomy as redundant secondary check and reconstruct it from measurements taken with 2D and 3D detector arrays. 3D dose calculations allow us to perform DVH-based comparisons with clinical relevance, as well as 3D gamma analysis. One of these systems (Compass, IBA Dosimetry) combines traditional 2D with new anatomical-based 3D gamma analysis. This work shows the ability of this system by comparing 2D and 3D gamma analysis in pre-treatment QA for several VMAT prostate plans. Methods: Compass is capable of calculating dose as secondary check from DICOM TPS data and reconstructing it from measurements taken by a 2D ion chamber array (MatriXX Evolution, IBA Dosimetry). Both 2D and 3D gamma tests are available to compare calculated and reconstructed dose in Compass with TPS RT Dose. Results: 15 VMAT prostate plans have been measured with Compass. Dose is reconstructed with Compass for these plans. 2D gamma comparisons can be done for any plane from dose matrix. Mean gamma passing rates for isocenter planes (axial, coronal, sagittal) are (99.70.2)%, (99.90.1)%, (99.90.1)% for reconstructed dose planes. 3D mean gamma passing rates are (98.51.7)% for PTVs, (99.11.5)% for rectum, (100.00.0)% for bladder, (99.60.7)% for femoral heads and (98.14.1)% for penile bulb. Conclusion: Compass is a powerful tool to perform a complete pre-treatment QA analysis, from 2D techniques to 3D DVH-based techniques with clinical relevance. All reported values for VMAT prostate plans are in good agreement with TPS values. This system permits us to ensure the accuracy in the delivery of VMAT treatments completing a full patient-specific QA program.

  19. SU-E-T-407: Evaluation of Four Commercial Dosimetry Systems for Routine Patient-Specific Tomotherapy Delivery Quality Assurance

    SciTech Connect (OSTI)

    Xing, A; Arumugam, S; Deshpande, S; George, A; Holloway, L; Vial, P; Goozee, G

    2014-06-01

    Purpose: The purpose of this project was to evaluate the performance of four commercially available dosimetry systems for Tomotherapy delivery quality assurance (DQA). Methods: Eight clinical patient plans were chosen to represent a range of treatment sites and typical clinical plans. Four DQA plans for each patient plan were created using the TomoTherapy DQA Station (Hi-Art version 4.2.1) on CT images of the ScandiDose Delta4, IBA MatriXX Evolution, PTW Octavius 4D and Sun Nuclear ArcCHECK phantoms. Each detector was calibrated following the manufacture-provided procedure. No angular response correction was applied. All DQA plans for each detector were delivered on the Tomotherapy Hi-Art unit in a single measurement session but on different days. The measured results were loaded into the vendor supplied software for each QA system for comparison with the TPS-calculated dose. The Gamma index was calculated using 3%/3mm, 2%/2mm with 10% dose threshold of maximum TPS calculated dose. Results: Four detector systems showed comparable gamma pass rates for 3%/3m, which is recommended by AAPM TG119 and commonly used within the radiotherapy community. The averaged pass rates standard deviation for all DQA plans were (98.351.97)% for ArcCHECK, (99.9%0.87)% for Matrix, (98.5%5.09)% for Octavius 4D, (98.7%1.27)% for Delata4. The rank of the gamma pass rate for individual plans was consistent between detectors. Using 2%/2mm Gamma criteria for analysis, the Gamma pass rate decreased on average by 9%, 8%, 6.6% and 5% respectively. Profile and Gamma failure map analysis using the software tools from each dosimetry system indicated that decreased passing rate is mainly due to the threading effect of Tomo plan. Conclusion: Despite the variation in detector type and resolution, phantom geometry and software implementation, the four systems demonstrated similar dosimetric performance, with the rank of the gamma pass rate consistent for the plans considered.

  20. SU-E-T-199: How Number of Control Points Influences the Dynamic IMRT Plan Quality and Deliverability

    SciTech Connect (OSTI)

    Sharma, S; Manigandan, D; Chander, S; Subramani, V; Julka, P; Rath, G

    2014-06-01

    Purpose: To study the influence of number of control points on plan quality and deliverability. Methods: Five previously treated patients of carcinoma of rectum were selected. Planning target volume (PTV) and organs at risk (OARs) i.e. bladder and bowel were contoured. Dynamic IMRT plans (6MV, 7-fields, 45Gy/25 fractions and prescribed at 95% isodose) were created in Eclipse (Varian medical system, Palo Alto, CA) treatment planning system (TPS) for Varian CL2300C/D linear-accelerator. Base plan was calculated with 166 control points, variable mode (Eclipse Default). For generating other plans, all parameters were kept constant, only number of control points (Fixed mode) was varied as follows: 100, 166 and 200. Then, plan quality was analyzed in terms of maximum and mean dose received by the PTV and OARs. For plan deliverability, TPS calculated fluence was verified with ImatriXX (IBA Dosimetry, Germany) array and compared with TPS dose-plane using gamma index criteria of 3% dose difference and 3mm distance to agreement (DTA). Total number of monitor units (MU) required to deliver a plan was also noted. Results: The maximum variation for the PTV maximum with respect to eclipse default control point (166) was 0.28% (0.14Gy). Similarly, PTV mean varied only up to 0.22 %( 0.11Gy). Bladder maximum and bladder mean varied up to 0.51% (0.24Gy) and 0.16% (0.06Gy). The variation for the bowel maximum and bowel mean was also only 0.39% (0.19Gy) and 0.33% (0.04Gy). Total MU was within 0.32 % (4MU). Average gamma pass rate using different control points for five patients are 98.750.33%, 99.370.09%, 99.290.12%, 98.140.13% and 99.250.14% respectively. Conclusion: Slight variation (<1%) in PTV and OARs maximum and mean doses was observed with varying number of control points. Monitor unit was also not varied much. Reducing number of control points did not showed any comprise in plan deliverability in terms of gamma index pass rate.

  1. Thermodynamical and structural insights of orange II adsorption by Mg{sub R}AlNO{sub 3} layered double hydroxides

    SciTech Connect (OSTI)

    Mustapha Bouhent, Mohamed; Derriche, Zoubir; Denoyel, Renaud; Prevot, Vanessa; Forano, Claude

    2011-05-15

    [Mg{sub 1-x} Al{sub x}(OH){sub 2}][(NO{sub 3}){sub x}, nH{sub 2}O] Layered Double Hydroxide (LDH) sorbents with variable Mg/Al molar (R=(1-x)/x) ratios were investigated for adsorption of azo dye, orange II (OII) at various pH and temperature conditions. Mg{sub 2}AlNO{sub 3} displays the highest adsorption capacity with 3.611 mmol of OII per gram of Mg{sub 2}AlNO{sub 3} at 40 {sup o}C. Adsorption isotherms have been fitted using the Langmuir model and free energy of adsorption ({Delta}G{sup o}), enthalpy ({Delta}H{sup o}) and entropy ({Delta}S{sup o}) were calculated. The experimental values for {Delta}G{sup o} in temperature range between 10 and 40 {sup o}C were found to be negative indicating that a spontaneous process occurred. Positive calculated enthalpy values, characteristic of an endothermic process were found. Characterization of solids (PXRD, FTIR, UV-vis, TGA/DTA, adsorption isotherm BET analysis, SEM and Zetametry) before and after adsorption showed that adsorption proceeds in two steps. First, adsorption occurs at the LDH surface, followed by intercalation via anion exchange. -- Graphical Abstract: Structural and thermodynamical insight of adsorption/Intercalation of OII in Mg{sub R}Al LDH Display Omitted Highlights: {yields} The nitrate containing hydrotalcite-like compounds (Mg{sub R}AlNO{sub 3} LDH) were prepared by the coprecipitation method. {yields} Adsorption of anionic orange dye(OII) is studied on LDHs at different temperatures. {yields} The adsorption process is well described by the Langmuir isotherm model. {yields} Mg{sub 2}AlNO{sub 3} displays the highest adsorption capacity with 3.611 mmol of OII per gram of Mg{sub 2}AlNO{sub 3} at 40 {sup o}C. {yields} Adsorption process does not occur on the surface of the LDH only but an intercalation process is also occurring concomitantly according to the thermodynamical values.

  2. Powder Metallurgy of Uranium Alloy Fuels for TRU-Burning Reactors Final Technical Report

    SciTech Connect (OSTI)

    McDeavitt, Sean M

    2011-04-29

    Overview Fast reactors were evaluated to enable the transmutation of transuranic isotopes generated by nuclear energy systems. The motivation for this was that TRU isotopes have high radiotoxicity and relatively long half-lives, making them unattractive for disposal in a long-term geologic repository. Fast reactors provide an efficient means to utilize the energy content of the TRUs while destroying them. An enabling technology that requires research and development is the fabrication metallic fuel containing TRU isotopes using powder metallurgy methods. This project focused upon developing a powder metallurgical fabrication method to produce U-Zr-transuranic (TRU) alloys at relatively low processing temperatures (500ºC to 600ºC) using either hot extrusion or alpha-phase sintering for charecterization. Researchers quantified the fundamental aspects of both processing methods using surrogate metals to simulate the TRU elements. The process produced novel solutions to some of the issues relating to metallic fuels, such as fuel-cladding chemical interactions, fuel swelling, volatility losses during casting, and casting mold material losses. Workscope There were two primary tasks associated with this project: 1. Hot working fabrication using mechanical alloying and extrusion • Design, fabricate, and assemble extrusion equipment • Extrusion database on DU metal • Extrusion database on U-10Zr alloys • Extrusion database on U-20xx-10Zr alloys • Evaluation and testing of tube sheath metals 2. Low-temperature sintering of U alloys • Design, fabricate, and assemble equipment • Sintering database on DU metal • Sintering database on U-10Zr alloys • Liquid assisted phase sintering on U-20xx-10Zr alloys Appendices Outline Appendix A contains a Fuel Cycle Research & Development (FCR&D) poster and contact presentation where TAMU made primary contributions. Appendix B contains MSNE theses and final defense presentations by David Garnetti and Grant Helmreich

  3. Probing variations in fundamental constants with radio and optical quasar absorption-line observations.

    SciTech Connect (OSTI)

    Tzanavaris, P.; Murphy, M. T.; Webb, J. K.; Flambaum, V. V.; Curran, S. J.; Physics; Univ. of New South Wales; Inst. of Astronomy

    2007-01-01

    Nine quasar absorption spectra at 21-cm and ultraviolet (UV) rest-frame wavelengths are used to estimate possible variations in x {triple_bond} {alpha}{sup 2}g{sub p}{mu}, where {alpha} is the fine structure constant, g{sub p} the proton g-factor and {mu} {triple_bond} m{sub e}/m{sub p} is the electron-to-proton mass ratio. We find <{Delta}x/x>{sub total}{sup weighted} = (0.63 {+-} 0.99) x 10{sup -5} over a redshift range 0.23 {le} z{sub abs} {le} 2.35 which corresponds to look-back times of 2.7-10.5 billion years. A linear fit against look-back time, tied to {Delta}x/x = 0 at z = 0, gives a best-fitting rate of change of {dot x}/x = (-0.6 {+-} 1.2) x 10{sup -5} yr{sup -1}. We find no evidence for strong angular variations in x across the sky. Our sample is much larger than most previous samples and demonstrates that intrinsic line-of-sight velocity differences between the 21-cm and UV absorption redshifts, which have a random sign and magnitude in each absorption system, limit our precision. The data directly imply that the average magnitude of this difference is {Delta}v{sub los}-6 km s{sup -1}. Combining our {Delta}x/x measurement with absorption-line constraints on {alpha}-variation yields strong limits on the variation of {mu}. Our most conservative estimate, obtained by assuming no variations in {alpha} or g{sub p} is simply {Delta}{mu}/{mu} = <{Delta}x/x>{sub total}{sup weighted}. If we use only the four high-redshift absorbers in our sample, we obtain {Delta}{mu}/{mu} = (0.58 {+-} 1.95) x 10{sup -5}, which agrees (2{sigma}) with recent, more direct estimates from two absorption systems containing molecular hydrogen, also at high redshift, and which have hinted at a possible {mu}-variation, {Delta}{mu}/{mu} = (-2.0 {+-} 0.6) x 10{sup -5}. Our method of constraining {Delta}{mu}/{mu} is completely independent from the molecular hydrogen observations. If we include the low-redshift systems, our {Delta}{mu}/{mu} result differs significantly from the high

  4. Impact of leaf motion constraints on IMAT plan quality, deliver accuracy, and efficiency

    SciTech Connect (OSTI)

    Chen Fan; Rao Min; Ye Jinsong; Shepard, David M.; Cao Daliang

    2011-11-15

    Purpose: Intensity modulated arc therapy (IMAT) is a radiation therapy delivery technique that combines the efficiency of arc based delivery with the dose painting capabilities of intensity modulated radiation therapy (IMRT). A key challenge in developing robust inverse planning solutions for IMAT is the need to account for the connectivity of the beam shapes as the gantry rotates from one beam angle to the next. To overcome this challenge, inverse planning solutions typically impose a leaf motion constraint that defines the maximum distance a multileaf collimator (MLC) leaf can travel between adjacent control points. The leaf motion constraint ensures the deliverability of the optimized plan, but it also impacts the plan quality, the delivery accuracy, and the delivery efficiency. In this work, the authors have studied leaf motion constraints in detail and have developed recommendations for optimizing the balance between plan quality and delivery efficiency. Methods: Two steps were used to generate optimized IMAT treatment plans. The first was the direct machine parameter optimization (DMPO) inverse planning module in the Pinnacle{sup 3} planning system. Then, a home-grown arc sequencer was applied to convert the optimized intensity maps into deliverable IMAT arcs. IMAT leaf motion constraints were imposed using limits of between 1 and 30 mm/deg. Dose distributions were calculated using the convolution/superposition algorithm in the Pinnacle{sup 3} planning system. The IMAT plan dose calculation accuracy was examined using a finer sampling calculation and the quality assurance verification. All plans were delivered on an Elekta Synergy with an 80-leaf MLC and were verified using an IBA MatriXX 2D ion chamber array inserted in a MultiCube solid water phantom. Results: The use of a more restrictive leaf motion constraint (less than 1-2 mm/deg) results in inferior plan quality. A less restrictive leaf motion constraint (greater than 5 mm/deg) results in improved plan

  5. Criteria and Processes for the Certification of Non-Radioactive Hazardous and Non-Hazardous Wastes

    SciTech Connect (OSTI)

    Dominick, J

    2008-12-18

    Hazardous Waste Management (RHWM) organization is responsible for the review and maintenance of this document. It should be noted that the DOE metal recycling moratorium is still in effect and is implemented as outlined in reference 17 when metals are being dispositioned for disposal/re-use/recycling off-site. This document follows the same methodology as described in the previously approved 1992 Moratorium document. Generator knowledge and certification are the primary means of characterization. Sampling and analysis are used when there is insufficient knowledge of a waste to determine if it contains added radioactivity. Table 1 (page 12) presents a list of LLNL's analytical methods for evaluating volumetrically contaminated waste and updates the reasonably achievable analytical-method-specific Minimum Detectable Concentrations (MDCs) for various matrices. Results from sampling and analysis are compared against the maximum MDCs for the given analytical method and the sample specific MDC to determine if the sample contains DOE added volumetric radioactivity. The evaluation of an item that has a physical form, and history of use, such that accessible surfaces may be potentially contaminated, is based on DOE Order 5400.5 (Reference 3), and its associated implementation guidance document DOE G 441.1-XX, Control and Release of Property with Residual Radioactive Material (Reference 4). The guidance document was made available for use via DOE Memorandum (Reference 5). Waste and materials containing residual radioactivity transferred off-site must meet the receiving facilities Waste Acceptance Criteria (if applicable) and be in compliance with other applicable federal or state requirements.