National Library of Energy BETA

Sample records for dispute resolution adr

  1. Alternative Dispute Resolution (ADR) Secretarial Statement |...

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

    a number of ADR methods, including facilitation, group conflict management, conflict coaching techniques, and mediation. For example, in mediation, a neutral third party (the...

  2. ADR Lunchtime Program: MEDIATING COMPLEX DISPUTES WITH THE GOVERNMENT -

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

    OPPORTUNITIES AND CHALLENGES | Department of Energy MEDIATING COMPLEX DISPUTES WITH THE GOVERNMENT - OPPORTUNITIES AND CHALLENGES ADR Lunchtime Program: MEDIATING COMPLEX DISPUTES WITH THE GOVERNMENT - OPPORTUNITIES AND CHALLENGES Mr. Feinberg is one of the nation's leading experts in mediation and alternative dispute resolution (ADR). He was appointed Special Master of the Federal September 11th Victim Compensation Fund of 2001 and the Troubled Asset Relief Program (TARP) Executive

  3. Alternative Dispute Resolution | Department of Energy

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

    Alternative Dispute Resolution Alternative Dispute Resolution Alternative Dispute Resolution The Office of Conflict Prevention and Resolution (formerly the Office of Dispute Resolution) provides assistance throughout the Department and to its contractors on using various types of Alternative Dispute Resolution (ADR) to prevent and resolve disputes without litigation. The Director of the office offers training, provides system design support, and acts as a consultant for all types of dispute

  4. ADR Lunchtime Program: MEDIATING COMPLEX DISPUTES WITH THE GOVERNMENT...

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

    MEDIATING COMPLEX DISPUTES WITH THE GOVERNMENT - OPPORTUNITIES AND CHALLENGES ADR Lunchtime Program: MEDIATING COMPLEX DISPUTES WITH THE GOVERNMENT - OPPORTUNITIES AND CHALLENGES ...

  5. The Role of Ombudsmen in Dispute Resolution | Department of Energy

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

    The Role of Ombudsmen in Dispute Resolution The Role of Ombudsmen in Dispute Resolution A report by the General Accounting Office (GAO) on the role of ombudsmen in dispute resolution. PDF icon RoleOmbuds.pdf More Documents & Publications Human Capital: The Role of Ombudsmen in Dispute Resolution ADR Revised Policy TT Coordinator Ltr dated May 13 2010

  6. Human Capital: The Role of Ombudsmen in Dispute Resolution | Department of

    Office of Environmental Management (EM)

    Energy Human Capital: The Role of Ombudsmen in Dispute Resolution Human Capital: The Role of Ombudsmen in Dispute Resolution PDF icon Human Capital: The Role of Ombudsmen in Dispute Resolution More Documents & Publications The Role of Ombudsmen in Dispute Resolution ADR Revised Policy TT Coordinator Ltr dated May 13 2010

  7. Contract Disputes | Department of Energy

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

    Conflict Prevention and Resolution » Contract Disputes Contract Disputes The Director, Office of Conflict Prevention and Resolution, is available to discuss inclusion of ADR provisions in contracts, to assist in determining whether ADR is appropriate, and to find neutrals for specific disputes. See: Civilian Board of Contract Appeals DOE Procurement Acquisition Letter on using ADR for disputes under the CDA (PDF); ADR Provisions in Federal Acquisition Regulation (FAR); and ADR Provisions in 48

  8. TENTATIVE RESOLUTION OF DISPUTE AND

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

    RESOLUTION OF DISPUTE AND CONCLUSION OF NEGOTIATIONS AGREEMENT REGARDING SINGLE-SHELL TANK WASTE RETRIEVAL AND THE ESTABLISHMENT OF ACCELERATED WASTE RETRIEVAL AND CLOSURE...

  9. Alternative Dispute Resolution (ADR) Seretarial Statement | Department...

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

    can negatively impact an organization and adversely affect our ability to achieve our mission as an Agency. The Department of Energy fully supports the use of alternative...

  10. ADR Revised Policy | Department of Energy

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

    Revised Policy ADR Revised Policy SUMMARY: On October 24, 1995, the Department of Energy (DOE) published an interim Statement of Policy on Alternative Dispute Resolution (ADR) (60 FR 54482) to further its commitment to the use of ADR for resolving issues in controversy in a fair, timely, and cost efficient manner, and to comply with the Administrative Dispute Resolution Act (ADRA), 5 U.S.C. §571 et seq. Today, DOE publishes a revised Statement of Policy on Alternative Dispute Resolution to

  11. ADR Policy Federal Register | Department of Energy

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

    Policy Federal Register ADR Policy Federal Register SUMMARY: On October 24, 1995, the Department of Energy (DOE) published an interim Statement of Policy on Alternative Dispute Resolution (ADR) (60 FR 54482) to further its commitment to the use of ADR for resolving issues in controversy in a fair, timely, and cost efficient manner, and to comply with the Administrative Dispute Resolution Act (ADRA), 5 U.S.C. 571 et seq. Today, DOE issues a revised Statement of Policy on Alternative Dispute

  12. Alternative Dispute Resolution Terms | Department of Energy

    Energy Savers [EERE]

    Alternative Dispute Resolution Terms Alternative Dispute Resolution Terms Dispute Systems Design Dispute systems design is a process for assisting an organization to develop a structure for handling a series of similar recurring or anticipated disputes (e.g., environmental enforcement cases or EEO complaints within a federal agency) more effectively. Facilitation Facilitation is a collaborative process in which a neutral seeks to assist a group of individuals or other parties to discuss

  13. Admirals ADR Memo FY11 | Department of Energy

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

    Memorandum for Heads of Departmental Elements From: M.G. Williams, JR., Associate Deputy Secretary Subject: Alternative Disputes Resolution PDF icon Admirals_Memo_ADR_FY11.pdf More Documents & Publications Alternative Dispute Resolution (ADR) Seretarial Statement Memorandum, Broader Consensual Listening Chapter 33 - Protests, Disputes and Appeals

  14. Interagency ADR Workplace Section Education Programs | Department of Energy

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

    Services » Conflict Prevention and Resolution » Interagency ADR Workplace Section Education Programs Interagency ADR Workplace Section Education Programs The Secretary of Energy expresses support of alternative dispute resolution (ADR) and the DOE annual celebration of Conflict Resolution Day held on the third Thursday of October. The Interagency Alternative Dispute Resolution Working Group (IADRWG) Workplace Conflict Management Section ("Workplace Section") provides guidance on

  15. ADR Lunchtime Program: Conflict Resolution Day - Civility in the Workplace

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

    | Department of Energy Conflict Resolution Day - Civility in the Workplace ADR Lunchtime Program: Conflict Resolution Day - Civility in the Workplace Deputy Secretary of Energy - Dr. Elizabeth Sherwood-Randall's remarks: Civility in the Workplace Incivility in the workplace adversely affects our sense of well-being and our ability to accomplish our mission: incivility is associated with stress, absenteeism, decreased productivity, staff turnover, and increased health costs. This presentation

  16. OCPR - HQ Mediation program ADR PRINCIPLES OF CONFLICT RESOLUTION

    Energy Savers [EERE]

    10) OCPR - HQ MEDIATION PROGRAM ADR PRINCIPLES OF CONFLICT RESOLUTION 1. Listen Actively Listening is the most important part of communication. If we do not hear what the other parties are communicating we cannot resolve a conflict. Active listening also includes noticing what the other person is saying with intonation and body language. 2. Think Before Reacting The tendency in a conflict situation is to react immediately. In emergencies, fast physical reaction can save lives. In workplace

  17. ADR Principles of Conduct | Department of Energy

    Energy Savers [EERE]

    Principles of Conduct ADR Principles of Conduct This document briefly discusses 7 principles that, if followed by all parties to a mediation, significantly enhance the probablity of finding a mutually agreed upon solution to almost any dispute. PDF icon OCPR-HQ-010 Final - ADR Principles of Conflct Resolution.pdf More Documents & Publications Mediation Process Employee Reminders Management Reminders

  18. Alternative Dispute Resolution | National Nuclear Security Administration

    National Nuclear Security Administration (NNSA)

    Alternative Dispute Resolution | National Nuclear Security Administration Facebook Twitter Youtube Flickr RSS People Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Countering Nuclear Terrorism About Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Library Bios Congressional Testimony Fact Sheets Newsletters Press Releases Photo Gallery Jobs Apply for Our Jobs Our Jobs

  19. ADR Provisions in Federal Acquisition Regulation (FAR)

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

    ADR Provisions in Federal Acquisition Regulation (FAR) d. Alternative means of dispute resolution. Notwithstanding any other provision of this chapter, a contractor and a contracting officer may use any alternative means of dispute resolution under subchapter IV of chapter 5 of title 5, or other mutually agreeable procedures, for resolving claims. In a case in which such alternative means of dispute resolution or other mutually agreeable procedures are used, the contractor shall certify that the

  20. Human Capital: The Role of Ombudsmen in Dispute Resolution

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

    the Ranking Member, Subcommittee on International Security, Proliferation, and Federal Services, Committee on Government Affairs, U.S. Senate United States General Accounting Office GAO April 2001 HUMAN CAPITAL The Role of Ombudsmen in Dispute Resolution GAO-01-466 Page i GAO-01-466 The Role of Ombudsmen in Dispute Resolution Letter 1 Results in Brief 2 Background 5 Objectives, Scope, and Methodology 12 Some Agencies Use Ombudsmen to Deal With Workplace Issues 14 The Case Illustrations: Varied

  1. Human Capital: The Role of Ombudsmen in Dispute Resolution

    Office of Environmental Management (EM)

    Report to the Ranking Member, Subcommittee on International Security, Proliferation, and Federal Services, Committee on Government Affairs, U.S. Senate United States General Accounting Office GAO April 2001 HUMAN CAPITAL The Role of Ombudsmen in Dispute Resolution GAO-01-466 Page i GAO-01-466 The Role of Ombudsmen in Dispute Resolution Letter 1 Results in Brief 2 Background 5 Objectives, Scope, and Methodology 12 Some Agencies Use Ombudsmen to Deal With Workplace Issues 14 The Case

  2. ADR Related Resources | Department of Energy

    Energy Savers [EERE]

    Conflict Prevention and Resolution » ADR Related Resources ADR Related Resources Miscellaneous DOE ADR Related Documents: Attorney General's signed concurrence letter approved October 9, 2009 BPA Guidance on the Use of Binding Arbitration for BPA Contracts datedOctober 9,2009 Letter from Department of Justice to Secretary Chu dated October 22, 2009 ADR Policy DOE General Counsel Issues Arbitration Guidance for M&O Contracts ADR Terms ADR Act of 1998, 28,U.S.C., Chapter 44, Sections 651-658,

  3. Microsoft Word - Request to Invoke Dispute Resolution Related to Final Audit Report A-07-12.doc

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

    DCM:AAC:08-0023:UFC:5486.00 Department of Energy Carlsbad Field Office P. O. Box 3090 Carlsbad, New Mexico 88221 June 11, 2008 Mr. James Bearzi Hazardous Waste Bureau New Mexico Environment Department 2905 E. Rodeo Park Drive, Bldg. 1 Santa Fe, NM 87502 Subject: Request to Invoke Dispute Resolution Related to Final Audit Report A-07-12 of the Los Alamos National Laboratory/Central Characterization Project Dear Mr. Bearzi: This letter is to request that the provisions of the WIPP Permit Condition

  4. ADR Lunchtime Program: Addressing Unconscious Bias in the ADR Process |

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

    Department of Energy Addressing Unconscious Bias in the ADR Process ADR Lunchtime Program: Addressing Unconscious Bias in the ADR Process This session focuses on strategies, issues, and insights into how unconscious bias impacts our perceptions, beliefs, and behaviors in today's workplace. Real-world case studies and current research are provided to increase awareness of the elements of the mediation/ADR process that may be impacted by biased communication and perception. The discussion

  5. ADR LUNCHTIME PROGRAM: ADR in the Federal EEO Process: What We...

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

    ADR LUNCHTIME PROGRAM: ADR in the Federal EEO Process: What We Need to Know about Revised MD-110 ADR LUNCHTIME PROGRAM: ADR in the Federal EEO Process: What We Need to Know about ...

  6. ADR Lunchtime Program: TAKING THE WAR OUT OF WORDS: LEARNING...

    Office of Environmental Management (EM)

    ADR Lunchtime Program: AMENDMENTS TO THE REHABILITATION ACT - RECENT TRENDS ADR Lunchtime Program: AMENDMENTS TO THE REHABILITATION ACT - RECENT TRENDS AND HOW ADR PRINCIPLES MAY ...

  7. ADR Lunchtime Program: WORKPLACE DISRUPTIONS, REORGANIZATIONS, AND

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

    'CHANGE FATIGUE' - CAN ADR SUPPORT RESILIENCE? | Department of Energy WORKPLACE DISRUPTIONS, REORGANIZATIONS, AND 'CHANGE FATIGUE' - CAN ADR SUPPORT RESILIENCE? ADR Lunchtime Program: WORKPLACE DISRUPTIONS, REORGANIZATIONS, AND 'CHANGE FATIGUE' - CAN ADR SUPPORT RESILIENCE? Today's government employees often operate in an environment of continuous change such as the sequester, agency re-organizations, furloughs, revision of job duties, and more. The responses to such adverse situations

  8. ADR Lunchtime Program: CONSEQUENCES OF WORKPLACE INTIMIDATION...

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

    More Documents & Publications DOE-HDBK-1028-2009 Los Alamos National Laboratory (LANL) Safety Conscious Work Environment (SCWE) Self-Assessment ADR Lunchtime Program: Addressing ...

  9. ADR Provisions in Federal Acquisition Regulation (FAR) | Department of

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

    Energy ADR Provisions in Federal Acquisition Regulation (FAR) » ADR Provisions in Federal Acquisition Regulation (FAR) ADR Provisions in Federal Acquisition Regulation (FAR) ADR Provisions in Federal Acquisition Regulation (FAR) PDF icon ADR Provisions in Federal Acquisition Regulation (FAR) More Documents & Publications Microsoft Word - ADR-Provisions-FederalAcquisitionReg.doc ACQUISITION LETTER DEAR Part 933 Microsoft Word - ACQUISITION LETTER.doc

  10. ADR Lunchtime Program: AMENDMENTS TO THE REHABILITATION ACT ...

    Office of Environmental Management (EM)

    TRENDS AND HOW ADR PRINCIPLES MAY HELP TO NAVIGATE THE REASONABLE ACCOMMODATION INTERACTIVE PROCESS ADR Lunchtime Program: AMENDMENTS TO THE REHABILITATION ACT - RECENT TRENDS ...

  11. ADR Lunchtime Program: AMENDMENTS TO THE REHABILITATION ACT - RECENT TRENDS

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

    AND HOW ADR PRINCIPLES MAY HELP TO NAVIGATE THE REASONABLE ACCOMMODATION INTERACTIVE PROCESS | Department of Energy AMENDMENTS TO THE REHABILITATION ACT - RECENT TRENDS AND HOW ADR PRINCIPLES MAY HELP TO NAVIGATE THE REASONABLE ACCOMMODATION INTERACTIVE PROCESS ADR Lunchtime Program: AMENDMENTS TO THE REHABILITATION ACT - RECENT TRENDS AND HOW ADR PRINCIPLES MAY HELP TO NAVIGATE THE REASONABLE ACCOMMODATION INTERACTIVE PROCESS The Rehabilitation Act requires federal agencies to provide

  12. ADR Lunchtime Program: CONSEQUENCES OF WORKPLACE INTIMIDATION: THE BOSS

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

    WHISPERER AND OTHER TOOLS FOR ADR PROFESSIONALS | Department of Energy CONSEQUENCES OF WORKPLACE INTIMIDATION: THE BOSS WHISPERER AND OTHER TOOLS FOR ADR PROFESSIONALS ADR Lunchtime Program: CONSEQUENCES OF WORKPLACE INTIMIDATION: THE BOSS WHISPERER AND OTHER TOOLS FOR ADR PROFESSIONALS This session will provide psychological insight into aggressive interaction in the workplace. We will examine individual behaviors which cause emotional distress and disrupt organizational functioning. The

  13. Laboratory disputes citizens' lawsuit

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

    Lab disputes ctizens' lawsuit Laboratory disputes citizens' lawsuit Lab officials expressed surprise to a lawsuit alleging noncompliance with the federal Clean Water Act filed today by citizens groups. February 7, 2008 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials. Los Alamos

  14. BPA FINAL Binding Arbitration policy

    Broader source: Energy.gov [DOE]

    Alternative dispute resolution (ADR) encompasses a variety of methods that parties may use to resolve disputes without litigation. Arbitration is a private, less formal process in which parties...

  15. Chapter 33 - Protests, Disputes and Appeals | Department of Energy

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

    3.1_Protests_0.pdf PDF icon 33.2_Alternative_Dispute_Resolution_0.pdf More Documents & Publications OPAM Policy Acquisition Guides ACQUISITION LETTER DEAR Part 933 Microsoft Word - ACQUISITION LETTER

  16. Microsoft Word - ADR-Provisions-FederalAcquisitionReg.doc | Department of

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

    Energy ADR-Provisions-FederalAcquisitionReg.doc Microsoft Word - ADR-Provisions-FederalAcquisitionReg.doc PDF icon Microsoft Word - ADR-Provisions-FederalAcquisitionReg.doc More Documents & Publications ADR Provisions in Federal Acquisition Regulation (FAR) Microsoft Word - ACQUISITION LETTER.doc Microsoft Word - ADR Revised Policy82508Reformatted.doc

  17. Microsoft Word - ADR Revised Policy82508Reformatted.doc | Department of

    Office of Environmental Management (EM)

    Energy ADR Revised Policy82508Reformatted.doc Microsoft Word - ADR Revised Policy82508Reformatted.doc PDF icon Microsoft Word - ADR Revised Policy82508Reformatted.doc More Documents & Publications ADR Revised Policy ADR Policy Federal Register Document

  18. ADR Lunchtime Program: How Do You Make Decisions? | Department of Energy

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

    How Do You Make Decisions? ADR Lunchtime Program: How Do You Make Decisions? May 14, 2015 "How Do You Make Decisions?" The study of NeuroEconomics is an emerging, interdisciplinary field that works to explain how humans make decisions. People in conflict may respond by working towards resolution, avoiding conflict, or becoming entrenched in their positions. The Speaker will discuss how the brain decides which way to respond and will offer language and tools to use in conflict

  19. ADR Lunchtime Program: WHERE DO YOU STAND IN THE FEEDBACK LOOP? MAKE

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

    FEEDBACK WORK FOR YOU | Department of Energy WHERE DO YOU STAND IN THE FEEDBACK LOOP? MAKE FEEDBACK WORK FOR YOU ADR Lunchtime Program: WHERE DO YOU STAND IN THE FEEDBACK LOOP? MAKE FEEDBACK WORK FOR YOU This interactive session during Conflict Resolution Month will delve into the complex topic of giving and receiving feedback. The presenter - a preeminent trainer and coach - will discuss how to use our skills and knowledge to help people in organizations work together effectively on

  20. ADR LUNCHTIME PROGRAM: Positivity in Workplace Conflict Management |

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

    Department of Energy ADR LUNCHTIME PROGRAM: Positivity in Workplace Conflict Management ADR LUNCHTIME PROGRAM: Positivity in Workplace Conflict Management This session explores the role of positive psychology - the scientific study of happiness and well-being - in the management of workplace conflict. We will discuss positive coaching, positive trainings, and positive facilitations. The goal of the session is to share insight on current studies and trends, available resources, and possible

  1. Field Office Programs for Workplace Disputes | Department of...

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

    Disputes Field Office Programs for Workplace Disputes Each field office uses mediation to varying degrees to resolve their workplace disputes. For more information,...

  2. The Secretary of Energy

    Energy Savers [EERE]

    December 29, 2014 MEMORANDUM FOR ALL DEPARTMENT OF ENERGY EMPLOYEES FROM: ERNEST J. MONIZ SUBJECT: Alternative Dispute Resolution (ADR) Se retarial Statement Disagreement and...

  3. ADR Lunchtime Program: RESPECTFUL CONFRONTATION | Department of Energy

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

    RESPECTFUL CONFRONTATION ADR Lunchtime Program: RESPECTFUL CONFRONTATION This workshop will explore how the principles of Respectful Confrontation are necessary for effective leadership in our new work culture. These principles are based on the belief that it is possible to stand in your power, speak your truth, hear the truth of others, and have your needs met in a way that will not cause harm. The use of Respectful Confrontation principles results in a shift in behavior, insight into yourself,

  4. ADR Lunchtime Program: YOUR BRAIN ON CONFLICT | Department of Energy

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

    YOUR BRAIN ON CONFLICT ADR Lunchtime Program: YOUR BRAIN ON CONFLICT In this workshop we will discuss basic brain structures and functions - how they affect behavior and are affected by behavior. We will also discuss neurotransmitters that are important in both producing and interpreting behavior. This knowledge will form the basis for a discussion of how we can influence behavior during times of conflict. We will take typical situations faced by managers and employees, and apply the knowledge

  5. ADR Lunchtime Program: TAKING THE WAR OUT OF WORDS: LEARNING TO COMMUNICATE

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

    WITH NON-DEFENSIVE LANGUAGE | Department of Energy TAKING THE WAR OUT OF WORDS: LEARNING TO COMMUNICATE WITH NON-DEFENSIVE LANGUAGE ADR Lunchtime Program: TAKING THE WAR OUT OF WORDS: LEARNING TO COMMUNICATE WITH NON-DEFENSIVE LANGUAGE Even when using best practices in ADR, clients and other professionals habitually employ reactive and defensive behaviors. Participants will learn significant ways that current ADR prototypes are still systemically rooted in a "war model" for

  6. AcqGuide33pt2.doc

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

    2 (August 2004) 1 Alternative Dispute Resolution [Reference: FAR 33; DEAR 933] Overview This section provides guidance for the use of alternative dispute resolution techniques in connection with disputes that arise under the Contract Disputes Act of 1978 (CDA), 41 U.S.C. sections 601-613. Background Alternative Dispute Resolution (ADR) refers to a range of procedures intended to resolve disputes at less cost, more quickly, and with greater satisfaction for the parties involved than is possible

  7. Field Office Programs for Workplace Disputes | Department of Energy

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

    Field Office Programs for Workplace Disputes Field Office Programs for Workplace Disputes Each field office uses mediation to varying degrees to resolve their workplace disputes. For more information, contact Pamela Pontillo or the Employee Concerns Program Contacts (PDF) at each Field Office.

  8. Microsoft Word - Request to Invoke Dispute Resolution Related...

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

    the NMED position that the loading of uniquely numbered cans of waste into drums is a visual examination activity requiring packaging logs or data forms signed and...

  9. Microsoft Word - Dispute Resolution Agreement August 2009.doc

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

    DIANE DENISH Lieutenant Governor NEW MEXICO ENVIRONMENT DEPARTMENT Hazardous Waste Bureau 2905 Rodeo Park Drive East, Building 1 Santa Fe, New Mexico 87505-6303 Phone (505)...

  10. Microsoft Word - Dispute Resolution Agreement August 2009.doc

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

    BILL RICHARDSON Governor DIANE DENISH Lieutenant Governor NEW MEXICO ENVIRONMENT DEPARTMENT Hazardous Waste Bureau 2905 Rodeo Park Drive East, Building 1 Santa Fe, New Mexico 87505-6303 Phone (505) 476-6000 Fax (505) 476-6030 www.nmenv.state.nm.us RON CURRY Secretary JON GOLDSTEIN Deputy Secretary CERTIFIED MAIL - RETURN RECEIPT REQUESTED August 4, 2009 David Moody, Manager Farok Sharif, President Carlsbad Field Office Washington TRU Solutions LLC Department of Energy P.O. Box 2078 P.O. Box 3090

  11. OpenADR Open Source Toolkit: Developing Open Source Software for the Smart Grid

    SciTech Connect (OSTI)

    McParland, Charles

    2011-02-01

    Demand response (DR) is becoming an increasingly important part of power grid planning and operation. The advent of the Smart Grid, which mandates its use, further motivates selection and development of suitable software protocols to enable DR functionality. The OpenADR protocol has been developed and is being standardized to serve this goal. We believe that the development of a distributable, open source implementation of OpenADR will benefit this effort and motivate critical evaluation of its capabilities, by the wider community, for providing wide-scale DR services

  12. Price Responsive Demand in New York Wholesale Electricity Market using OpenADR

    SciTech Connect (OSTI)

    Kim, Joyce Jihyun; Kiliccote, Sila

    2012-06-01

    In New York State, the default electricity pricing for large customers is Mandatory Hourly Pricing (MHP), which is charged based on zonal day-ahead market price for energy. With MHP, retail customers can adjust their building load to an economically optimal level according to hourly electricity prices. Yet, many customers seek alternative pricing options such as fixed rates through retail access for their electricity supply. Open Automated Demand Response (OpenADR) is an XML (eXtensible Markup Language) based information exchange model that communicates price and reliability information. It allows customers to evaluate hourly prices and provide demand response in an automated fashion to minimize electricity costs. This document shows how OpenADR can support MHP and facilitate price responsive demand for large commercial customers in New York City.

  13. ADR Lunchtime Program: THE MEMODRAMA OF CONFLICT - FROM PASSIVE VICTIM TO

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

    ACTIVE HERO | Department of Energy THE MEMODRAMA OF CONFLICT - FROM PASSIVE VICTIM TO ACTIVE HERO ADR Lunchtime Program: THE MEMODRAMA OF CONFLICT - FROM PASSIVE VICTIM TO ACTIVE HERO Conflict stories tend to be melodramatic in their content and structure. In this workshop, we will examine the different characters that populate the melodramatic narrative and the development of the melodramatic plot. We will also consider how the narrative distorts and structures people's experience of

  14. AllEHDMetfl' Of' SOllCITATIONJMCIDIFICATION 01' CONTRACT

    National Nuclear Security Administration (NNSA)

    ... the parties, by mutual consent, may agree to use alternative dispute resolution (ADR). ... DE-NA0000622 Modification No. 0084 Page 48 of 54 (6) Fuels and packaged petroleum ...

  15. Automated Price and Demand Response Demonstration for Large Customers in New York City using OpenADR

    SciTech Connect (OSTI)

    Kim, Joyce Jihyun; Yin, Rongxin; Kiliccote, Sila

    2013-10-01

    Open Automated Demand Response (OpenADR), an XML-based information exchange model, is used to facilitate continuous price-responsive operation and demand response participation for large commercial buildings in New York who are subject to the default day-ahead hourly pricing. We summarize the existing demand response programs in New York and discuss OpenADR communication, prioritization of demand response signals, and control methods. Building energy simulation models are developed and field tests are conducted to evaluate continuous energy management and demand response capabilities of two commercial buildings in New York City. Preliminary results reveal that providing machine-readable prices to commercial buildings can facilitate both demand response participation and continuous energy cost savings. Hence, efforts should be made to develop more sophisticated algorithms for building control systems to minimize customer's utility bill based on price and reliability information from the electricity grid.

  16. Demonstration of automated price response in large customers in New York City using Auto-DR and OpenADR

    SciTech Connect (OSTI)

    Kim, Joyce Jihyun; Schetrit, Oren; Yin, Rongxin; Kiliccote, Sila

    2014-05-01

    Demand response (DR) – allowing customers to respond to reliability requests and market prices by changing electricity use from their normal consumption pattern – continues to be seen as an attractive means of demand-side management and a fundamental smart-grid improvement that links supply and demand. From October 2011 to December 2013, the Demand Response Research Center at Lawrence Berkeley National Laboratory, the New York State Energy Research and Development Authority, and partners Honeywell and Akuacom, have conducted a demonstration project enabling Automated Demand Response (Auto-DR) in large commercial buildings located in New York City using Open Automated Demand Response (OpenADR) communication protocols. In particular, this project focuses on demonstrating how the OpenADR platform, enabled by Akuacom, can automate and simplify interactions between buildings and various stakeholders in New York State and enable the automation of customers’ price response to yield bill savings under dynamic pricing. In this paper, the cost control opportunities under day-ahead hourly pricing and Auto-DR control strategies are presented for four demonstration buildings; present the breakdown of Auto-DR enablement costs; summarize the field test results and their load impact; and show potential bill savings by enabling automated price response under Consolidated Edison’s Mandatory Hourly Pricing (MHP) tariff. For one of the sites, the potential bill savings at the site’s current retail rate are shown. Facility managers were given granular equipment-level opt-out capability to ensure full control of the sites during the Auto-DR implementation. The expected bill savings ranged from 1.1% to 8.0% of the total MHP bill. The automation and enablement costs ranged from $70 to $725 per kW shed. The results show that OpenADR can facilitate the automation of price response, deliver savings to the customers and opt-out capability of the implementation retains control of the sites by facility managers.

  17. Outreach Activities | Department of Energy

    Energy Savers [EERE]

    Services » Conflict Prevention and Resolution » Outreach Activities Outreach Activities The OCPR staff engages in various outreach activities within the DOE complex and the greater federal ADR community to promote the use of alternative dispute resolution techniques. To that end, OCPR staff are members of the Interagency Alternative Dispute Resolution Working Group (IADRWG) Workplace Conflict Management Section ("Workplace Section"). This group provides guidance on "best

  18. OM 14-66; Board's Interest Rate Remains 3 Percent for the Fourth Quarter, FY 14; 6/11/14

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

    GENERAL COUNSEL Division of Operations-Management MEMORANDUM OM 16-02 October 15, 2015 TO: All Regional Directors, Officers-in-Charge, and Resident Officers FROM: Anne Purcell, Associate General Counsel SUBJECT: NLRB ADR Program for Settling Unfair Labor Practice Cases Pending before the Board Since December 2005, the National Labor Relations Board's alternative dispute resolution (ADR) program has assisted parties in settling unfair labor practice cases pending before the Board. For parties who

  19. OCPR - HQ Mediation Program mediation process

    Energy Savers [EERE]

    3) OCPR - HQ MEDIATION PROGRAM MEDIATION PROCESS The following guidance is the process that a party to a mediation should expect to follow under the Headquarters Mediation Program. I. DECISION TO PARTICIPATE IN MEDIATION a. In December 2014, the Secretary of Energy issued an Alternative Dispute Resolution (ADR) Secretarial Statement encouraging employees and managers to consider using "ADR at the earliest opportunity to resolve or prevent conflict." To that end, the HQ Mediation

  20. Knockdown of dual specificity phosphatase 4 enhances the chemosensitivity of MCF-7 and MCF-7/ADR breast cancer cells to doxorubicin

    SciTech Connect (OSTI)

    Liu, Yu; Du, Feiya; Chen, Wei; Yao, Minya; Lv, Kezhen; Fu, Peifen

    2013-12-10

    Background: Breast cancer is the major cause of cancer-related deaths in females world-wide. Doxorubicin-based therapy has limited efficacy in breast cancer due to drug resistance, which has been shown to be associated with the epithelial-to-mesenchymal transition (EMT). However, the molecular mechanisms linking the EMT and drug resistance in breast cancer cells remain unclear. Dual specificity phosphatase 4 (DUSP4), a member of the dual specificity phosphatase family, is associated with cellular proliferation and differentiation; however, its role in breast cancer progression is controversial. Methods: We used cell viability assays, Western blotting and immunofluorescent staining, combined with siRNA interference, to evaluate chemoresistance and the EMT in MCF-7 and adriamycin-resistant MCF-7/ADR breast cancer cells, and investigate the underlying mechanisms. Results: Knockdown of DUSP4 significantly increased the chemosensitivity of MCF-7 and MCF-7/ADR breast cancer cells to doxorubicin, and MCF-7/ADR cells which expressed high levels of DUSP4 had a mesenchymal phenotype. Furthermore, knockdown of DUSP4 reversed the EMT in MCF-7/ADR cells, as demonstrated by upregulation of epithelial biomarkers and downregulation of mesenchymal biomarkers, and also increased the chemosensitivity of MCF-7/ADR cells to doxorubicin. Conclusions: DUSP4 might represent a potential drug target for inhibiting drug resistance and regulating the process of the EMT during the treatment of breast cancer. - Highlights: We used different technologies to prove our conclusion. DUSP4 knockdown increased doxorubicin chemosensitivity in breast cancer cells. DUSP4 is a potential target for combating drug resistance in breast cancer. DUSP4 is a potential target for regulating the EMT in breast cancer.

  1. OCPR - HQ Mediation Program employee Reminders

    Energy Savers [EERE]

    4) OCPR - HQ MEDIATION PROGRAM EMPLOYEE REMINDERS Thank you for agreeing to participate in the DOE Headquarters Mediation Program. Here is some information to assist you in preparing for the mediation process. 1. Mediation Process. Mediation is a type of an Alternative Dispute Resolution (ADR) technique to resolve workplace disputes. A neutral third party or mediator assists the parties in discussing their concerns in a productive manner. Mediation is available any time during the EEO

  2. OCPR - HQ Mediation Program management Reminders

    Energy Savers [EERE]

    6) OCPR - HQ MEDIATION PROGRAM MANAGEMENT REMINDERS Thank you for agreeing to participate in the DOE Headquarters Mediation Program. Here is some information to assist you in preparing for the mediation process. 1. Mediation Process. Mediation is a type of an Alternative Dispute Resolution (ADR) technique to resolve workplace disputes. A neutral third party or mediator assists the parties in discussing their concerns in a productive manner. Mediation is available any time during the EEO

  3. Microsoft Word - DE-EM0003383 Penser Contract (mod 005) with track changes.docx

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

    5 Section H Workers' Compensation Claims Services Penser North America, Inc. H-i PART I - THE SCHEDULE SECTION H SPECIAL CONTRACT REQUIREMENTS TABLE OF CONTENTS H.1 DOE-H-1001 OMBUDSMAN .......................................................................................... 1 H.2 DOE-H-1024 ALTERNATIVE DISPUTE RESOLUTION (ADR) ............................. 1 H.3 DOE-H-1025 CONTRACTOR INTERFACE WITH OTHER CONTRACTORS AND/OR GOVERNMENT EMPLOYEES

  4. ADR Revised Policy

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

    2 the government, contracts and procurement, and workplace conflict. A Working Group Steering Committee was established to represent nearly 60 federal agencies. Pursuant to...

  5. Survey of university students` knowledge and views on nuclear waste disposal and the alternative dispute resolution process

    SciTech Connect (OSTI)

    Sheng, G.; Deffner, L.; Fiorini, S. [York Univ., North York, Ontario (Canada)

    1996-12-01

    The management of the high level radioactive waste is an issue which generates multifaceted conflicts. These conflicts are multi-determined, but are nonetheless, based on a myriad of associated concerns including but not exclusive to: effects of radiation on public health and safety, uncertainty associated with long-term assessments and effects, confidence in technology and in government and industry to protect public health and safety, and concerns regarding concurrent and intergenerational equity. These concerns are likely to be deeply felt by the many potential actors and stakeholders who will be impacted during the process of site selection for a nuclear waste disposal facility. Because this site selection is sure to be a controversial undertaking, it is in the interests of those who wish to promote the use of the high-level radioactive waste disposal concept, to understand fully the potential for conflict and consider alternative means of proactively preventing and/or resolving conflicts.

  6. River Corridor Closure Contract Section J, Attachment J-14

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

    4 Contract No. DE-AC06-08RL14655 A099 1 SECTION J, ATTACHMENT J-14 ACRONYM LIST The following acronyms are used in this Contract: AB Authorization Basis ACO Administrative Contracting Officer ACWP Actual Cost of Work Performed ADR Alternative Dispute Resolution ARRA American Recovery and Reinvestment Act B&R Budgeting and Reporting BCWP Budgeted Cost of Work Performed BCWS Budgeted Cost of Work Scheduled BHI Bechtel Hanford, Inc. BMS Business Management System BRC Budget and Reporting

  7. Mediation Brochure | Department of Energy

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

    Brochure Mediation Brochure This brochure covers the following Mediation topics: Conflict in the workplace What is mediation? What types of conflicts can be mediated? Who can request mediation? How to get started What to expect at mediation Benefits of mediation PDF icon 2mediation_brochure.pdf More Documents & Publications Microsoft Word - GC Mediation Evaluation _2-06-09_.doc Mediation Survey Form Alternative Dispute Resolution (ADR) Secretarial Statement

  8. DOE TRANSCOM Technical Support Services DE-EM0002903 SECTION J - LIST OF ATTACHMENTS

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

    6 ACRONYM LIST Acronym Description TRANSCOM Transportation Tracking and Communications System 8(a) Section 8(a) of the Small Business Act ADR Alternative Dispute Resolution CBFO Carlsbad Field Office CCR Central Contractor Registration CFR Code of Federal Regulations CLIN Contract Line Item Number CO Contracting Officer COR Contracting Officer Representative CPARS Contractor Performance Assessment Reporting System DEAR Department of Energy Acquisition Regulation DOE Department of Energy DPLH

  9. Microsoft Word - RL14788-Section_J-1 Acronym.doc

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

    , Revision 0 J.1-1 ATTACHMENT J.1 ABBREVIATIONS AND ACRONYM LIST % percent 3013 DOE-STD-3013-2004 AA Authorization Agreements ACO Administrative Contracting Officer ADR Alternative Dispute Resolution AEA Atomic Energy Act of 1954 ANSI American National Standards Institute APGEMS Air Pollutant Graphical Environmental Modeling System Ben-Val Employee Benefits Value Study BRC Budget and reporting classification CAGE Commercial and government entity (code) CAIS Condition Assessment Information

  10. The Secretary of Energy

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

    December 29, 2014 MEMORANDUM FOR ALL DEPARTMENT OF ENERGY EMPLOYEES FROM: ERNEST J. MONIZ SUBJECT: Alternative Dispute Resolution (ADR) Se retarial Statement Disagreement and conflict are inevitable in the workplace. Conflict arising among our employees may involve all types of matters, including health and safety, environment, technology transfer, employment, and other workplace issues. Left unresolved, such conflict can negatively impact an organization and adversely affect our ability to

  11. Acquisition Conflict Resolution

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

    Conflict Resolution At the option of the Supplier, a concern may be brought to the Ombuds Office or may be taken to the Internal Conflict Resolution Process Supplier Concern Internal Resolution Primary Discussion Escalation Steps Senior Review Process Special Assistant Senior Review Group Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy's National Nuclear Security Administration under Contract DE-AC04-

  12. Conflict Resolution Day

    Broader source: Energy.gov [DOE]

    Conflict Resolution Day takes a look at mediation, conciliation, negotiation, arbitration, the ombudsman, and facilitation to resolve conflict in the workplace. Employees and contractors are...

  13. Particle detector spatial resolution

    DOE Patents [OSTI]

    Perez-Mendez, Victor (Berkeley, CA)

    1992-01-01

    Method and apparatus for producing separated columns of scintillation layer material, for use in detection of X-rays and high energy charged particles with improved spatial resolution. A pattern of ridges or projections is formed on one surface of a substrate layer or in a thin polyimide layer, and the scintillation layer is grown at controlled temperature and growth rate on the ridge-containing material. The scintillation material preferentially forms cylinders or columns, separated by gaps conforming to the pattern of ridges, and these columns direct most of the light produced in the scintillation layer along individual columns for subsequent detection in a photodiode layer. The gaps may be filled with a light-absorbing material to further enhance the spatial resolution of the particle detector.

  14. Particle detector spatial resolution

    DOE Patents [OSTI]

    Perez-Mendez, V.

    1992-12-15

    Method and apparatus for producing separated columns of scintillation layer material, for use in detection of X-rays and high energy charged particles with improved spatial resolution is disclosed. A pattern of ridges or projections is formed on one surface of a substrate layer or in a thin polyimide layer, and the scintillation layer is grown at controlled temperature and growth rate on the ridge-containing material. The scintillation material preferentially forms cylinders or columns, separated by gaps conforming to the pattern of ridges, and these columns direct most of the light produced in the scintillation layer along individual columns for subsequent detection in a photodiode layer. The gaps may be filled with a light-absorbing material to further enhance the spatial resolution of the particle detector. 12 figs.

  15. High resolution data acquisition

    DOE Patents [OSTI]

    Thornton, Glenn W.; Fuller, Kenneth R.

    1993-01-01

    A high resolution event interval timing system measures short time intervals such as occur in high energy physics or laser ranging. Timing is provided from a clock (38) pulse train (37) and analog circuitry (44) for generating a triangular wave (46) synchronously with the pulse train (37). The triangular wave (46) has an amplitude and slope functionally related to the time elapsed during each clock pulse in the train. A converter (18, 32) forms a first digital value of the amplitude and slope of the triangle wave at the start of the event interval and a second digital value of the amplitude and slope of the triangle wave at the end of the event interval. A counter (26) counts the clock pulse train (37) during the interval to form a gross event interval time. A computer (52) then combines the gross event interval time and the first and second digital values to output a high resolution value for the event interval.

  16. High resolution data acquisition

    DOE Patents [OSTI]

    Thornton, G.W.; Fuller, K.R.

    1993-04-06

    A high resolution event interval timing system measures short time intervals such as occur in high energy physics or laser ranging. Timing is provided from a clock, pulse train, and analog circuitry for generating a triangular wave synchronously with the pulse train (as seen in diagram on patent). The triangular wave has an amplitude and slope functionally related to the time elapsed during each clock pulse in the train. A converter forms a first digital value of the amplitude and slope of the triangle wave at the start of the event interval and a second digital value of the amplitude and slope of the triangle wave at the end of the event interval. A counter counts the clock pulse train during the interval to form a gross event interval time. A computer then combines the gross event interval time and the first and second digital values to output a high resolution value for the event interval.

  17. High resolution telescope

    DOE Patents [OSTI]

    Massie, Norbert A. (San Ramon, CA); Oster, Yale (Danville, CA)

    1992-01-01

    A large effective-aperture, low-cost optical telescope with diffraction-limited resolution enables ground-based observation of near-earth space objects. The telescope has a non-redundant, thinned-aperture array in a center-mount, single-structure space frame. It employs speckle interferometric imaging to achieve diffraction-limited resolution. The signal-to-noise ratio problem is mitigated by moving the wavelength of operation to the near-IR, and the image is sensed by a Silicon CCD. The steerable, single-structure array presents a constant pupil. The center-mount, radar-like mount enables low-earth orbit space objects to be tracked as well as increases stiffness of the space frame. In the preferred embodiment, the array has elemental telescopes with subaperture of 2.1 m in a circle-of-nine configuration. The telescope array has an effective aperture of 12 m which provides a diffraction-limited resolution of 0.02 arc seconds. Pathlength matching of the telescope array is maintained by an electro-optical system employing laser metrology. Speckle imaging relaxes pathlength matching tolerance by one order of magnitude as compared to phased arrays. Many features of the telescope contribute to substantial reduction in costs. These include eliminating the conventional protective dome and reducing on-site construction activites. The cost of the telescope scales with the first power of the aperture rather than its third power as in conventional telescopes.

  18. High resolution time interval meter

    DOE Patents [OSTI]

    Martin, A.D.

    1986-05-09

    Method and apparatus are provided for measuring the time interval between two events to a higher resolution than reliability available from conventional circuits and component. An internal clock pulse is provided at a frequency compatible with conventional component operating frequencies for reliable operation. Lumped constant delay circuits are provided for generating outputs at delay intervals corresponding to the desired high resolution. An initiation START pulse is input to generate first high resolution data. A termination STOP pulse is input to generate second high resolution data. Internal counters count at the low frequency internal clock pulse rate between the START and STOP pulses. The first and second high resolution data are logically combined to directly provide high resolution data to one counter and correct the count in the low resolution counter to obtain a high resolution time interval measurement.

  19. ADR Related Resources | Department of Energy

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

    DOE Related Organization Links: DOE's Office of Civil Rights and Diversity DOE's Office of ... by the Department of Health and Human Services in Washington, DC. The program is ...

  20. Admirals_Memo_ADR_FY11.pdf

    Energy Savers [EERE]

  1. ADR Lunchtime Program: WORKPLACE DISRUPTIONS, REORGANIZATIONS...

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

    Today's government employees often operate in an environment of continuous change such as the sequester, agency re-organizations, furloughs, revision of job duties, and more. The ...

  2. Environmental Conflict Resolution | Department of Energy

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

    Environmental Conflict Resolution Environmental Conflict Resolution ENVIRONMENTAL CONFLICT RESOLUTION In September 2012, the Council on Environmental Quality (CEQ) and the Office...

  3. Environmental Conflict Resolution | Department of Energy

    Office of Environmental Management (EM)

    Environmental Conflict Resolution Environmental Conflict Resolution PDF icon Environmental Conflict Resolution More Documents & Publications Final ECR 2008 Report 2009 ECR FINAL REPORT 2010 test

  4. Inspection Report: IG-0393 | Department of Energy

    Energy Savers [EERE]

    IG-0393 More Documents & Publications The Role of Ombudsmen in Dispute Resolution Human Capital: The Role of Ombudsmen in Dispute Resolution Semiannual Report to Congress: April...

  5. Highest-Resolution Ribosome Structure

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

    factors. Two structures of the intact ribosome from the common bacterium Escherichia coli, determined by a Berkeley-Berlin collaboration to a resolution of 3.5 , the highest...

  6. Highest-Resolution Ribosome Structure

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

    Highest-Resolution Ribosome Structure Highest-Resolution Ribosome Structure Print Wednesday, 26 April 2006 00:00 The last step in converting the genetic information stored in DNA into the major functional parts of cells is protein biosynthesis. Protein synthesis occurs on the ribosome, a cellular factory found in all forms of life. In contrast to most cellular machines, the ribosome contains a functional core of RNA that is enhanced by ribosomal proteins and accessory factors. Two structures of

  7. High resolution digital delay timer

    DOE Patents [OSTI]

    Martin, Albert D. (Los Alamos, NM)

    1988-01-01

    Method and apparatus are provided for generating an output pulse following a trigger pulse at a time delay interval preset with a resolution which is high relative to a low resolution available from supplied clock pulses. A first lumped constant delay (20) provides a first output signal (24) at predetermined interpolation intervals corresponding to the desired high resolution time interval. Latching circuits (26, 28) latch the high resolution data (24) to form a first synchronizing data set (60). A selected time interval has been preset to internal counters (142, 146, 154) and corrected for circuit propagation delay times having the same order of magnitude as the desired high resolution. Internal system clock pulses (32, 34) count down the counters to generate an internal pulse delayed by an interval which is functionally related to the preset time interval. A second LCD (184) corrects the internal signal with the high resolution time delay. A second internal pulse is then applied to a third LCD (74) to generate a second set of synchronizing data (76) which is complementary with the first set of synchronizing data (60) for presentation to logic circuits (64). The logic circuits (64) further delay the internal output signal (72) to obtain a proper phase relationship of an output signal (80) with the internal pulses (32, 34). The final delayed output signal (80) thereafter enables the output pulse generator (82) to produce the desired output pulse (84) at the preset time delay interval following input of the trigger pulse (10, 12).

  8. Resolute Marine Energy Inc | Open Energy Information

    Open Energy Info (EERE)

    Resolute Marine Energy Inc Jump to: navigation, search Name: Resolute Marine Energy Inc Address: 3 Post Office Square 3rd floor Place: Massachusetts Country: United States Zip:...

  9. Spatial resolution of diffraction tomography

    SciTech Connect (OSTI)

    Dickens, T.A.; Winbow, G.A.

    1997-01-01

    Diffraction tomography is an imaging technique applicable to crosshole seismic data and aimed at achieving optimal spatial resolution away from the borehole. In principle the method can form acoustic images equivalent to extending acoustic well logs away from the wellbore and into the formation with a spatial resolution less than one wavelength of the radiation employed to gather the crosshole data. This paper reports on the capability of diffraction tomography to produce high-resolution reconstructions of simple targets from limited-view-angle data. The goal is to quantify the resolution and velocity-reconstruction capability of diffraction tomography with realistic source{endash}receiver geometries. Simple targets (disks and low-contrast sequences of layers) are used for this study. The scattering from these targets can be calculated without approximation, making them ideal test cases for the algorithm. The resolution capability of diffraction tomography is determined to be on the order of one wavelength for several experimental geometries. It is shown that the image-formation characteristics of diffraction tomography, in terms of its ability to determine object boundaries and velocities, are closely related to the experimental geometry. Reflection and vertical seismic profiling (VSP) experiments tend to reproduce boundaries well, while crosshole experiments give the best overall reconstruction of both target boundaries and velocity. The quantitative accuracy of the velocity reconstruction depends upon the match between the spatial-frequency content of the object and the spatial-frequency response of the algorithm. For some targets, the velocity cannot be correctly reproduced from limited-view-angle data. {copyright} {ital 1997 Acoustical Society of America.}

  10. State Energy Advisory Board Resolutions | Department of Energy

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

    Resolutions State Energy Advisory Board Resolutions Resolution documents from STEAB, as posted on the U.S. Department of Energy website. PDF icon Resolution 13-01 PDF icon Resolution 12-01 PDF icon Resolution 12-02 PDF icon Resolution 10-01 PDF icon Resolution 10-02 PDF icon Resolution 09-01 PDF icon Resolution 09-02 PDF icon Resolution 09-03 PDF icon Resolution 09-04 PDF icon Resolution 08-01 PDF icon Resolution 08-02 PDF icon Resolution 07-01 PDF icon Amendment to 06-01 PDF icon Resolution

  11. STEAB Resolution 06-04

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

    STATE ENERGY ADVISORY BOARD Resolution 06-04 BACKGROUND The expansion of renewable electric supplies is being driven by consumer demand, competitive pricing, and state policies such as the Renewable Portfolio Standards (RPS) program. Political favor is being driven by heightened concerns in global climate change, escalating prices in traditional power generation and geopolitical energy security. The positions of traditional energy sector stakeholders continue to evolve to one of advocacy and

  12. STEAB Resolution 07-01

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

    S Department of Energy State Energy Advisory Board Resolution 07-01 BACKGROUND With record high fuel prices and heavy reliance on foreign sources of oil, new alternative fuel vehicles and technologies are crucial to addressing the nation's energy security and independence. Originally called Sunrayce USA, the first solar car race was organized and sponsored by General Motors in 1990. Subsequent races were held in 1993, 1995, 1997 and 1999 under the name Sunrayce. In 2001, the race was renamed

  13. STEAB Resolution 08-01

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

    DEPARTMENT OF ENERGY STATE ENERGY ADVISORY BOARD Resolution 08-01 SUBJECT: Continuation of Energy Efficiency and Renewable Energy's Office of Commercialization and Deployment Initiative. The State Energy Advisory Board appreciates the efforts of the Office of Energy Efficiency and Renewable Energy (EERE) to place increased emphasis on accelerated commercialization of EERE-sponsored technologies, as well as market transformation. In particular, the Board would like to recognize the creative

  14. STEAB Resolution 08-02

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

    U.S. DEPARTMENT OF ENERGY STATE ENERGY ADVISORY BOARD Resolution 08-02 Topic: U.S. Department of Energy, Cooperative Extension System and State Energy Offices collaboration on reinventing the "Rebuild America Program" Background: Record energy prices and a heavy reliance on fossil fuels are resulting in increased interest in energy efficiency and the utilization of renewable energy when heating, cooling and lighting American buildings. The adoption of new technologies, energy

  15. STEAB Resolution 09-01

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

    State Energy Advisory Board (STEAB) Resolution 09-01 Topic: Support for U.S. Congress Appropriation of Funding for Public Law 110-229, Sec 601, "Advanced Energy Technology Transfer Centers" Background: Securing America's energy future is among the most important challenges in today's current events. The U.S. Department of Energy's EERE Office; the U.S. Department of Agriculture's Research, Education and Economics Division; land-grant universities; and State Energy Offices (SEOs) are

  16. STEAB Resolution 10-01

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

    United States Department of Energy State Energy Advisory Board (STEAB) Resolution 10-01 Topic: U.S. Department of Energy, Cooperative Extension Service, and State Energy Offices Collaboration on energy efficiency and renewable energy education for America. Background: Record energy prices and a heavy reliance on foreign oil are resulting in increased interest in energy efficiency and the utilization of renewable energy. National and world efforts to set low-carbon emission standards are also

  17. STEAB Resolution 10-02

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

    Department of Energy State Energy Advisory Board (STEAB) Resolution 10-02 Subject: Strategic Focus on the Need for a New EERE-Wide Implementation Paradigm through Partnerships and Collaboration Background: With the passage of the Recovery Act, the Department of Energy has undertaken enormous new management challenges as it implements both new and rapidly expanding energy programs designed to enhance US economic competitiveness, job creation, and national energy security. Innovation and

  18. STEAB Resolution 12-02

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

    State Energy Advisory Board (STEAB) Resolution 12-02 Subject: Recommendation to establish a State and Local Energy Efficiency Action Network (SEE Action) Sub-Committee comprised of the current STEAB Board members participating in the SEE Action Network in order to bring to the STEAB for consideration any recommendations for federal action made by the SEE Action Network convened by DOE and EPA. Background: The State and Local Energy Efficiency Action Network (SEE Action) is a state and local

  19. STEAB Resolution 13-01

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

    DEPARTMENT OF ENERGY STATE ENERGY ADVISORY BOARD (STEAB) Resolution13-01 SUBJECT Recommendation to establish sustainable partnerships between National Laboratories and states in order to facilitate the deployment of near-commercial ready and development of new technologies. BACKGROUND The United States industrial sector continues to face challenges from foreign competition in the development, deployment, and successful commercialization of new technologies. Technology development is not cheap

  20. Highest-Resolution Ribosome Structure

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

    Highest-Resolution Ribosome Structure Print The last step in converting the genetic information stored in DNA into the major functional parts of cells is protein biosynthesis. Protein synthesis occurs on the ribosome, a cellular factory found in all forms of life. In contrast to most cellular machines, the ribosome contains a functional core of RNA that is enhanced by ribosomal proteins and accessory factors. Two structures of the intact ribosome from the common bacterium Escherichia coli,

  1. Highest-Resolution Ribosome Structure

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

    Highest-Resolution Ribosome Structure Print The last step in converting the genetic information stored in DNA into the major functional parts of cells is protein biosynthesis. Protein synthesis occurs on the ribosome, a cellular factory found in all forms of life. In contrast to most cellular machines, the ribosome contains a functional core of RNA that is enhanced by ribosomal proteins and accessory factors. Two structures of the intact ribosome from the common bacterium Escherichia coli,

  2. High resolution time interval counter

    DOE Patents [OSTI]

    Condreva, K.J.

    1994-07-26

    A high resolution counter circuit measures the time interval between the occurrence of an initial and a subsequent electrical pulse to two nanoseconds resolution using an eight megahertz clock. The circuit includes a main counter for receiving electrical pulses and generating a binary word--a measure of the number of eight megahertz clock pulses occurring between the signals. A pair of first and second pulse stretchers receive the signal and generate a pair of output signals whose widths are approximately sixty-four times the time between the receipt of the signals by the respective pulse stretchers and the receipt by the respective pulse stretchers of a second subsequent clock pulse. Output signals are thereafter supplied to a pair of start and stop counters operable to generate a pair of binary output words representative of the measure of the width of the pulses to a resolution of two nanoseconds. Errors associated with the pulse stretchers are corrected by providing calibration data to both stretcher circuits, and recording start and stop counter values. Stretched initial and subsequent signals are combined with autocalibration data and supplied to an arithmetic logic unit to determine the time interval in nanoseconds between the pair of electrical pulses being measured. 3 figs.

  3. High resolution time interval counter

    DOE Patents [OSTI]

    Condreva, Kenneth J. (Livermore, CA)

    1994-01-01

    A high resolution counter circuit measures the time interval between the occurrence of an initial and a subsequent electrical pulse to two nanoseconds resolution using an eight megahertz clock. The circuit includes a main counter for receiving electrical pulses and generating a binary word--a measure of the number of eight megahertz clock pulses occurring between the signals. A pair of first and second pulse stretchers receive the signal and generate a pair of output signals whose widths are approximately sixty-four times the time between the receipt of the signals by the respective pulse stretchers and the receipt by the respective pulse stretchers of a second subsequent clock pulse. Output signals are thereafter supplied to a pair of start and stop counters operable to generate a pair of binary output words representative of the measure of the width of the pulses to a resolution of two nanoseconds. Errors associated with the pulse stretchers are corrected by providing calibration data to both stretcher circuits, and recording start and stop counter values. Stretched initial and subsequent signals are combined with autocalibration data and supplied to an arithmetic logic unit to determine the time interval in nanoseconds between the pair of electrical pulses being measured.

  4. Office of Civil Rights, NNSA, NA 1.2, Albuquerque Complex

    National Nuclear Security Administration (NNSA)

    Technical advisory services for managers, supervisors, and employees Discrimination complaints program management Alternative Dispute Resolution Program...

  5. NNSA-Wide

    National Nuclear Security Administration (NNSA)

    Technical advisory services for managers, supervisors, and employees Discrimination complaints program management Alternative Dispute Resolution Program...

  6. STEAB Resolution 06-01

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

    STATE ENERGY ADVISORY BOARD Resolution 06-01 ISSUE Movement of the Weatherization Assistance Program from the U.S. Department of Energy to the U.S. Department of Health and Human Services. BACKGROUND The Weatherization Assistance Program (WAP) is funded and managed through the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy. The WAP was created in 1976 to assist low-income families who lacked resources to invest in energy efficiency. WAP is operated in all 50 states

  7. Environmental Conflict Resolution | Department of Energy

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

    Environmental Conflict Resolution Environmental Conflict Resolution ENVIRONMENTAL CONFLICT RESOLUTION In September 2012, the Council on Environmental Quality (CEQ) and the Office of Management and Budget (OMB) , issued a joint memorandum calling for department and agency commitment to the goals identified in the Memorandum on Environmental Collaboration and Conflict Resolution (ECCR), and the goals identified in related policy guidance. This memorandum supersedes an OMB/CEQ joint memorandum

  8. Mapping photovoltaic performance with nanoscale resolution (Journal

    Office of Scientific and Technical Information (OSTI)

    Article) | DOE PAGES DOE PAGES Search Results Accepted Manuscript: Mapping photovoltaic performance with nanoscale resolution This content will become publicly available on October 16, 2016 Title: Mapping photovoltaic performance with nanoscale resolution Photo-conductive AFM spectroscopy ('pcAFMs') is proposed as a high-resolution approach for investigating nanostructured photovoltaics, uniquely providing nanoscale maps of photovoltaic (PV) performance parameters such as the short circuit

  9. Afghanistan Pakistan High Resolution Wind Resource - Datasets...

    Open Energy Info (EERE)

    Pakistan High Resolution Wind Resource This shapefile containing 50 meter height data has been validated by NREL and wind energy meteorological consultants. However, the data is...

  10. High resolution scintillation detector with semiconductor readout

    DOE Patents [OSTI]

    Levin, Craig S.; Hoffman, Edward J.

    2000-01-01

    A novel high resolution scintillation detector array for use in radiation imaging such as high resolution Positron Emission Tomography (PET) which comprises one or more parallelepiped crystals with at least one long surface of each crystal being in intimate contact with a semiconductor photodetector such that photons generated within each crystal by gamma radiation passing therethrough is detected by the photodetector paired therewith.

  11. High-resolution ophthalmic imaging system

    DOE Patents [OSTI]

    Olivier, Scot S. (Livermore, CA); Carrano, Carmen J. (Livermore, CA)

    2007-12-04

    A system for providing an improved resolution retina image comprising an imaging camera for capturing a retina image and a computer system operatively connected to the imaging camera, the computer producing short exposures of the retina image and providing speckle processing of the short exposures to provide the improved resolution retina image. The system comprises the steps of capturing a retina image, producing short exposures of the retina image, and speckle processing the short exposures of the retina image to provide the improved resolution retina image.

  12. Atomic resolution images of graphite in air

    SciTech Connect (OSTI)

    Grigg, D.A.; Shedd, G.M.; Griffis, D.; Russell, P.E.

    1988-12-01

    One sample used for proof of operation for atomic resolution in STM is highly oriented pyrolytic graphite (HOPG). This sample has been imaged with many different STM`s obtaining similar results. Atomic resolution images of HOPG have now been obtained using an STM designed and built at the Precision Engineering Center. This paper discusses the theoretical predictions and experimental results obtained in imaging of HOPG.

  13. Transportation Issues and Resolutions Compilation of Laboratory

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

    Transportation Work Package Reports | Department of Energy Transportation Issues and Resolutions Compilation of Laboratory Transportation Work Package Reports Transportation Issues and Resolutions Compilation of Laboratory Transportation Work Package Reports The Transportation Team identified the retrievability and subcriticality safety functions to be of primary importance to the transportation of UNF after extended storage and to transportation of high burnup fuel. The tasks performed and

  14. OpenADR Specification to Ease Saving Power in Buildings

    ScienceCinema (OSTI)

    Piette, Mary Ann

    2013-05-29

    A new data model developed by researchers at the Department of Energys Lawrence Berkeley National Laboratory and their colleagues at other universities and in the private sector will help facilities and buildings save power through automated demand response technology, and advance the development of the Smart Grid. http://newscenter.lbl.gov/press-releases/2009/04/27/openadr-specification/

  15. OpenADR Specification to Ease Saving Power in Buildings

    ScienceCinema (OSTI)

    None

    2010-01-08

    A new data model developed by researchers at the Department of Energys Lawrence Berkeley National Laboratory and their colleagues at other universities and in the private sector will help facilities and buildings save power through automated demand response technology, and advance the development of the Smart Grid.

  16. ADR Policy Federal Register Vol. 73, No. 207 / Friday, October...

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

    the government, contracts and procurement, and workplace conflict. A Working Group Steering Committee was established to represent nearly 60 federal agencies. Pursuant to...

  17. High-Resolution PET Detector. Final report

    SciTech Connect (OSTI)

    Karp, Joel

    2014-03-26

    The objective of this project was to develop an understanding of the limits of performance for a high resolution PET detector using an approach based on continuous scintillation crystals rather than pixelated crystals. The overall goal was to design a high-resolution detector, which requires both high spatial resolution and high sensitivity for 511 keV gammas. Continuous scintillation detectors (Anger cameras) have been used extensively for both single-photon and PET scanners, however, these instruments were based on NaI(Tl) scintillators using relatively large, individual photo-multipliers. In this project we investigated the potential of this type of detector technology to achieve higher spatial resolution through the use of improved scintillator materials and photo-sensors, and modification of the detector surface to optimize the light response function.We achieved an average spatial resolution of 3-mm for a 25-mm thick, LYSO continuous detector using a maximum likelihood position algorithm and shallow slots cut into the entrance surface.

  18. Design of a Subnanometer Resolution Beam Position Monitor for...

    Office of Scientific and Technical Information (OSTI)

    Design of a Subnanometer Resolution Beam Position Monitor for Dielectric Laser Accelerators Citation Details In-Document Search Title: Design of a Subnanometer Resolution Beam...

  19. Design of a Subnanometer Resolution Beam Position Monitor for...

    Office of Scientific and Technical Information (OSTI)

    Design of a Subnanometer Resolution Beam Position Monitor for Dielectric Laser Accelerators Citation Details In-Document Search Title: Design of a Subnanometer Resolution Beam ...

  20. High-Resolution Photocurrent Microscopy Using Near-FieldCathodolumine...

    Office of Scientific and Technical Information (OSTI)

    High-Resolution Photocurrent Microscopy Using Near-Field Cathodoluminescence of Quantum Dots. Citation Details In-Document Search Title: High-Resolution Photocurrent Microscopy ...

  1. Electromagnetic eXtended Finite Elements for Accurate Resolution...

    Office of Scientific and Technical Information (OSTI)

    Accurate Resolution of Multi-Material Cells. Citation Details In-Document Search Title: Electromagnetic eXtended Finite Elements for Accurate Resolution of Multi-Material Cells. ...

  2. Supercomputers Fuel Global High-Resolution Climate Models

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

    Supercomputers Fuel Global High-Resolution Climate Models Supercomputers Fuel Global High-Resolution Climate Models Berkeley Lab Researcher Says Climate Science is Entering New...

  3. Characterization of spatially resolved high resolution x-ray...

    Office of Scientific and Technical Information (OSTI)

    Laboratory measurements demonstrate a resolving power, EE of order 10 000 and spatial resolution better than 10 m. Initial tests of the high resolution instrument on HEDP ...

  4. Ultra-High Resolution Electron Microscopy for Catalyst Characterizatio...

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

    pm029allard2011p.pdf More Documents & Publications Ultra-High Resolution Electron Microscopy for Catalyst Characterization Ultra-high Resolution Electron Microscopy for Catalyst...

  5. Ultra-High Resolution Electron Microscopy for Catalyst Characterizatio...

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

    pm029allard2010p.pdf More Documents & Publications Ultra-High Resolution Electron Microscopy for Catalyst Characterization Ultra-high Resolution Electron Microscopy for Catalyst...

  6. High Resolution Imaging Science Experiment | Open Energy Information

    Open Energy Info (EERE)

    Resolution Imaging Science Experiment Jump to: navigation, search OpenEI Reference LibraryAdd to library Web Site: High Resolution Imaging Science Experiment Author University of...

  7. ADR LUNCHTIME PROGRAM: ADR in the Federal EEO Process: What We Need to Know about Revised MD-110

    Broader source: Energy.gov [DOE]

    Speaker: Victor Voloshin Esq., Chief Mediation Officer, U.S. Equal Employment Opportunity Commission

  8. A High Resolution Scale-of-four

    DOE R&D Accomplishments [OSTI]

    Fitch, V.

    1949-08-25

    A high resolution scale-of-four has been developed to be used in conjunction with the nuclear particle detection devices in applications where the counting rate is unusually high. Specifically, it is intended to precede the commercially available medium resolution scaling circuits and so decrease the resolving time of the counting system. The circuit will function reliably on continuously recurring pulses separated by less than 0.1 microseconds. It will resolve two pulses (occurring at a moderate repetition rate) which are spaced at 0.04 microseconds. A five-volt input signal is sufficient to actuate the device.

  9. High resolution A/D conversion based on piecewise conversion at lower resolution

    DOE Patents [OSTI]

    Terwilliger, Steve (Albuquerque, NM)

    2012-06-05

    Piecewise conversion of an analog input signal is performed utilizing a plurality of relatively lower bit resolution A/D conversions. The results of this piecewise conversion are interpreted to achieve a relatively higher bit resolution A/D conversion without sampling frequency penalty.

  10. ELECTRONICS UPGRADE OF HIGH RESOLUTION MASS SPECTROMETERS

    SciTech Connect (OSTI)

    Mcintosh, J; Joe Cordaro, J

    2008-03-10

    High resolution mass spectrometers are specialized systems that allow researchers to determine the exact mass of samples to four significant digits by using magnetic and electronic sector mass analyzers. Many of the systems in use today at research laboratories and universities were designed and built more than two decades ago. The manufacturers of these systems have abandoned the support for some of the mass spectrometers and parts to power and control them have become scarce or obsolete. The Savannah River National Laboratory has been involved in the upgrade of the electronics and software for these legacy machines. The Electronics Upgrade of High Resolution Mass Spectrometers consists of assembling high-end commercial instrumentation from reputable manufacturers with a minimal amount of customization to replace the electronics for the older systems. By taking advantage of advances in instrumentation, precise magnet control can be achieved using high resolution current sources and continuous feedback from a high resolution hall-effect probe. The custom equipment include a precision voltage divider/summing amplifier chassis, high voltage power supply chassis and a chassis for controlling the voltage emission for the mass spectrometer source tube. The upgrade package is versatile enough to interface with valve control, vacuum and other instrumentation. Instrument communication is via a combination of Ethernet and traditional IEEE-488 GPIB protocols. The system software upgrades include precision control, feedback and spectral waveform analysis tools.

  11. Goodbye, Watts. Hello, Lumens. (Low-Resolution Billboard) | Department of

    Energy Savers [EERE]

    Energy Low-Resolution Billboard) Goodbye, Watts. Hello, Lumens. (Low-Resolution Billboard) Low-resolution JPG of billboard reading, 'Goodbye Watts. Hello Lumens. The new way to shop for light. Energysaver.gov Image icon DoE_Billboard_Goodbye_Watts_web.jpg More Documents & Publications Goodbye, Watts. Hello, Lumens. (High-Resolution JPG Billboard) Goodbye, Watts. Hello, Lumens. (High-Resolution EPS

  12. High resolution patterning of silica aerogels

    SciTech Connect (OSTI)

    Bertino, M.F.; Hund, J.F.; Sosa, J.; Zhang, G.; Sotiriou-Leventis, C.; Leventis, N.; Tokuhiro, A.T.; Terry, J. (UMR-MUST); (IIT)

    2008-10-30

    Three-dimensional metallic structures are fabricated with high spatial resolution in silica aerogels. In our method, silica hydrogels are prepared with a standard base-catalyzed route, and exchanged with an aqueous solution typically containing Ag{sup +} ions (1 M) and 2-propanol (0.2 M). The metal ions are reduced photolytically with a table-top ultraviolet lamp, or radiolytically, with a focused X-ray beam. We fabricated dots and lines as small as 30 x 70 {micro}m, protruding for several mm into the bulk of the materials. The hydrogels are eventually supercritically dried to yield aerogels, without any measurable change in the shape and spatial resolution of the lithographed structures. Transmission electron microscopy shows that illuminated regions are composed by Ag clusters with a size of several {micro}m, separated by thin layers of silica.

  13. STEAB Resolution 06-01 Amendments

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

    DEPARTMENT OF ENERGY STATE ENERGY ADVISORY BOARD Resolution 06-01 Amendments 1) Move the "Background" section before the "Issue" section. 2) Page 1, in the "Rationale" section, combine paragraphs 2 and 3. 3) Page 2, line 7, change the word "delivery" to "deliver." 4) Page 2, add "Draft Adopted unanimously by STEAB members on August 17, 2006" in the footer

  14. Jobs and Internships | Department of Energy

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

    non-proliferation, renewable technologies, alternate fuels vehicles, environmental compliance, intellectual property, alternative dispute resolution, and loan guarantee programs....

  15. Effect of Resolution on Propagating Detonation Wave

    SciTech Connect (OSTI)

    Menikoff, Ralph

    2014-07-10

    Simulations of the cylinder test are used to illustrate the effect of mesh resolution on a propagating detonation wave. For this study we use the xRage code with the SURF burn model for PBX 9501. The adaptive mesh capability of xRage is used to vary the resolution of the reaction zone. We focus on two key properties: the detonation speed and the cylinder wall velocity. The latter is related to the release isentrope behind the detonation wave. As the reaction zone is refined (2 to 15 cells for cell size of 62 to 8?m), both the detonation speed and final wall velocity change by a small amount; less than 1 per cent. The detonation speed decreases with coarser resolution. Even when the reaction zone is grossly under-resolved (cell size twice the reaction-zone width of the burn model) the wall velocity is within a per cent and the detonation speed is low by only 2 per cent.

  16. Method and system for dual resolution translation stage

    DOE Patents [OSTI]

    Halpin, John Michael

    2014-04-22

    A dual resolution translation stage includes a stage assembly operable to receive an optical element and a low resolution adjustment device mechanically coupled to the stage assembly. The dual resolution stage also includes an adjustable pivot block mechanically coupled to the stage assembly. The adjustable pivot block includes a pivot shaft. The dual resolution stage further includes a lever arm mechanically coupled to the adjustable pivot block. The lever arm is operable to pivot about the pivot shaft. The dual resolution stage additionally includes a high resolution adjustment device mechanically coupled to the lever arm and the stage assembly.

  17. Y-12 presented with joint resolution honoring 70th anniversary...

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

    Posted: September 24, 2015 - 11:17am Ray Smith (left) accepts a copy of a joint resolution ... The resolution was presented to Y-12 historian Ray Smith at an Aug. 29 event in Oak Ridge. ...

  18. Ultra-high Resolution Electron Microscopy for Catalyst Characterization |

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

    Department of Energy high Resolution Electron Microscopy for Catalyst Characterization Ultra-high Resolution Electron Microscopy for Catalyst Characterization 2009 DOE Hydrogen Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting, May 18-22, 2009 -- Washington D.C. PDF icon pmp_24_allard.pdf More Documents & Publications Ultra-High Resolution Electron Microscopy for Catalyst Characterization Ultra-High Resolution Electron Microscopy for Catalyst

  19. Operations, Audit Resolution, and Internal Controls | Department of Energy

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

    Business Operations » Project Management Coordination Office » Operations, Audit Resolution, and Internal Controls Operations, Audit Resolution, and Internal Controls PMCO oversees critical audit resolution and internal controls compliance and serves as a liaison to the EERE's Operations Council. Goals And Priorities Perform centralized audit resolution on behalf of EERE. Manage the internal controls process for EERE HQ. News & Blog Mission Leadership Budget EERE Offices Business

  20. Goodbye, Watts. Hello, Lumens. (High-Resolution EPS Billboard) | Department

    Energy Savers [EERE]

    of Energy EPS Billboard) Goodbye, Watts. Hello, Lumens. (High-Resolution EPS Billboard) High-resolution EPS of billboard reading, 'Goodbye Watts. Hello Lumens. The new way to shop for light. Energysaver.gov File DoE_Billboard_Goodbye_Watts.EPS More Documents & Publications Goodbye, Watts. Hello, Lumens. (High-Resolution JPG

  1. Goodbye, Watts. Hello, Lumens. (High-Resolution JPG Billboard) | Department

    Energy Savers [EERE]

    of Energy JPG Billboard) Goodbye, Watts. Hello, Lumens. (High-Resolution JPG Billboard) High-resolution JPG of billboard reading, 'Goodbye Watts. Hello Lumens. The new way to shop for light. Energysaver.gov Image icon DoE_Billboard_Goodbye_Watts.jpg More Documents & Publications Goodbye, Watts. Hello, Lumens. (High-Resolution EPS

  2. Ultra-high resolution computed tomography imaging

    DOE Patents [OSTI]

    Paulus, Michael J. (Knoxville, TN); Sari-Sarraf, Hamed (Knoxville, TN); Tobin, Jr., Kenneth William (Harriman, TN); Gleason, Shaun S. (Knoxville, TN); Thomas, Jr., Clarence E. (Knoxville, TN)

    2002-01-01

    A method for ultra-high resolution computed tomography imaging, comprising the steps of: focusing a high energy particle beam, for example x-rays or gamma-rays, onto a target object; acquiring a 2-dimensional projection data set representative of the target object; generating a corrected projection data set by applying a deconvolution algorithm, having an experimentally determined a transfer function, to the 2-dimensional data set; storing the corrected projection data set; incrementally rotating the target object through an angle of approximately 180.degree., and after each the incremental rotation, repeating the radiating, acquiring, generating and storing steps; and, after the rotating step, applying a cone-beam algorithm, for example a modified tomographic reconstruction algorithm, to the corrected projection data sets to generate a 3-dimensional image. The size of the spot focus of the beam is reduced to not greater than approximately 1 micron, and even to not greater than approximately 0.5 microns.

  3. ON THE IMPACT OF SUPER RESOLUTION WSR-88D DOPPLER RADAR DATA ASSIMILATION ON HIGH RESOLUTION NUMERICAL MODEL FORECASTS

    SciTech Connect (OSTI)

    Chiswell, S

    2009-01-11

    Assimilation of radar velocity and precipitation fields into high-resolution model simulations can improve precipitation forecasts with decreased 'spin-up' time and improve short-term simulation of boundary layer winds (Benjamin, 2004 & 2007; Xiao, 2008) which is critical to improving plume transport forecasts. Accurate description of wind and turbulence fields is essential to useful atmospheric transport and dispersion results, and any improvement in the accuracy of these fields will make consequence assessment more valuable during both routine operation as well as potential emergency situations. During 2008, the United States National Weather Service (NWS) radars implemented a significant upgrade which increased the real-time level II data resolution to 8 times their previous 'legacy' resolution, from 1 km range gate and 1.0 degree azimuthal resolution to 'super resolution' 250 m range gate and 0.5 degree azimuthal resolution (Fig 1). These radar observations provide reflectivity, velocity and returned power spectra measurements at a range of up to 300 km (460 km for reflectivity) at a frequency of 4-5 minutes and yield up to 13.5 million point observations per level in super-resolution mode. The migration of National Weather Service (NWS) WSR-88D radars to super resolution is expected to improve warning lead times by detecting small scale features sooner with increased reliability; however, current operational mesoscale model domains utilize grid spacing several times larger than the legacy data resolution, and therefore the added resolution of radar data is not fully exploited. The assimilation of super resolution reflectivity and velocity data into high resolution numerical weather model forecasts where grid spacing is comparable to the radar data resolution is investigated here to determine the impact of the improved data resolution on model predictions.

  4. Camera system resolution and its influence on digital image correlation

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

    Reu, Phillip L.; Sweatt, William; Miller, Timothy; Fleming, Darryn

    2014-09-21

    Digital image correlation (DIC) uses images from a camera and lens system to make quantitative measurements of the shape, displacement, and strain of test objects. This increasingly popular method has had little research on the influence of the imaging system resolution on the DIC results. This paper investigates the entire imaging system and studies how both the camera and lens resolution influence the DIC results as a function of the system Modulation Transfer Function (MTF). It will show that when making spatial resolution decisions (including speckle size) the resolution limiting component should be considered. A consequence of the loss ofmore » spatial resolution is that the DIC uncertainties will be increased. This is demonstrated using both synthetic and experimental images with varying resolution. The loss of image resolution and DIC accuracy can be compensated for by increasing the subset size, or better, by increasing the speckle size. The speckle-size and spatial resolution are now a function of the lens resolution rather than the more typical assumption of the pixel size. The study will demonstrate the tradeoffs associated with limited lens resolution.« less

  5. Mapping photovoltaic performance with nanoscale resolution

    SciTech Connect (OSTI)

    Kutes, Yasemin; Aguirre, Brandon A.; Bosse, James L.; Cruz-Campa, Jose L.; Zubia, David; Huey, Bryan D.

    2015-10-16

    Photo-conductive AFM spectroscopy (pcAFMs) is proposed as a high-resolution approach for investigating nanostructured photovoltaics, uniquely providing nanoscale maps of photovoltaic (PV) performance parameters such as the short circuit current, open circuit voltage, maximum power, or fill factor. The method is demonstrated with a stack of 21 images acquired during in situ illumination of micropatterned polycrystalline CdTe/CdS, providing more than 42,000 I/V curves spatially separated by ~5 nm. For these CdTe/CdS microcells, the calculated photoconduction ranges from 0 to 700 picoSiemens (pS) upon illumination with ~1.6 suns, depending on location and biasing conditions. Mean short circuit currents of 2 pA, maximum powers of 0.5 pW, and fill factors of 30% are determined. The mean voltage at which the detected photocurrent is zero is determined to be 0.7 V. Significantly, enhancements and reductions in these more commonly macroscopic PV performance metrics are observed to correlate with certain grains and grain boundaries, and are confirmed to be independent of topography. Furthermore, these results demonstrate the benefits of nanoscale resolved PV functional measurements, reiterate the importance of microstructural control down to the nanoscale for 'PV devices, and provide a widely applicable new approach for directly investigating PV materials.

  6. High vertical resolution crosswell seismic imaging

    DOE Patents [OSTI]

    Lazaratos, Spyridon K. (Houston, TX)

    1999-12-07

    A method for producing high vertical resolution seismic images from crosswell data is disclosed. In accordance with one aspect of the disclosure, a set of vertically spaced, generally horizontally extending continuous layers and associated nodes are defined within a region between two boreholes. The specific number of nodes is selected such that the value of a particular characteristic of the subterranean region at each of the nodes is one which can be determined from the seismic data. Once values are established at the nodes, values of the particular characteristic are assigned to positions between the node points of each layer based on the values at node within that layer and without regard to the values at node points within any other layer. A seismic map is produced using the node values and the assigned values therebetween. In accordance with another aspect of the disclosure, an approximate model of the region is established using direct arrival traveltime data. Thereafter, the approximate model is adjusted using reflected arrival data. In accordance with still another aspect of the disclosure, correction is provided for well deviation. An associated technique which provides improvements in ray tracing is also disclosed.

  7. Deformable elastic network refinement for low-resolution macromolecular crystallography

    SciTech Connect (OSTI)

    Schrder, Gunnar F.; Levitt, Michael; Brunger, Axel T.

    2014-09-01

    An overview of applications of the deformable elastic network (DEN) refinement method is presented together with recommendations for its optimal usage. Crystals of membrane proteins and protein complexes often diffract to low resolution owing to their intrinsic molecular flexibility, heterogeneity or the mosaic spread of micro-domains. At low resolution, the building and refinement of atomic models is a more challenging task. The deformable elastic network (DEN) refinement method developed previously has been instrumental in the determinion of several structures at low resolution. Here, DEN refinement is reviewed, recommendations for its optimal usage are provided and its limitations are discussed. Representative examples of the application of DEN refinement to challenging cases of refinement at low resolution are presented. These cases include soluble as well as membrane proteins determined at limiting resolutions ranging from 3 to 7 . Potential extensions of the DEN refinement technique and future perspectives for the interpretation of low-resolution crystal structures are also discussed.

  8. Computational Performance of Ultra-High-Resolution Capability in the

    Office of Scientific and Technical Information (OSTI)

    Community Earth System Model (Journal Article) | SciTech Connect Computational Performance of Ultra-High-Resolution Capability in the Community Earth System Model Citation Details In-Document Search Title: Computational Performance of Ultra-High-Resolution Capability in the Community Earth System Model With the fourth release of the Community Climate System Model, the ability to perform ultra-high resolution climate simulations is now possible, enabling eddy-resolving ocean and sea ice

  9. Characterization of spatially resolved high resolution x-ray spectrometers

    Office of Scientific and Technical Information (OSTI)

    for high energy density physics and light source experiments (Journal Article) | SciTech Connect Characterization of spatially resolved high resolution x-ray spectrometers for high energy density physics and light source experiments Citation Details In-Document Search Title: Characterization of spatially resolved high resolution x-ray spectrometers for high energy density physics and light source experiments A high resolution 1D imaging x-ray spectrometer concept comprising a spherically

  10. AUDIT REPORT The Department of Energy's Audit Resolution

    Energy Savers [EERE]

    Audit Resolution and Followup Process DOE-OIG-16-08 March 2016 U.S. Department of Energy Office of Inspector General Office of Audits and Inspections Department of Energy Washington, DC 20585 March 1, 2016 MEMORANDUM FOR THE SECRETARY FROM: Rickey R. Hass Acting Inspector General SUBJECT: INFORMATION: Audit Report on "The Department of Energy's Audit Resolution and Followup Process" BACKGROUND Audit resolution and followup is an essential step in the audit process. It ensures that

  11. Environmental Conflict Resolution Third Annual Report January 2009

    Office of Environmental Management (EM)

    Conflict Resolution Third Annual Report January 2009 U.S. Department of Energy EXECUTIVE SUMMARY The Department of Energy (DOE or the Department) defines environmental conflict resolution (ECR) as the use of any collaborative process to prevent or resolve environmental conflicts, including but not limited to those processes involving the use of third-party neutrals. This definition is consistent with that provided in the Administration's 2005 Memorandum on Environmental Conflict Resolution which

  12. Merging high resolution geophysical and geochemical surveys to...

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

    combine a suite of high resolution geophysical and geochemical techniques to reduce exploration risk by characterizing hydrothermal alteration, fault geometries and relationships. ...

  13. High-resolution measurements of the spatial and temporal evolution...

    Office of Scientific and Technical Information (OSTI)

    temporal evolution of megagauss magnetic fields created in intense short-pulse laser-plasma interactions Citation Details In-Document Search Title: High-resolution measurements...

  14. Section 20320 of the Revised Continuing Appropriations Resolution...

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

    20320 of the Revised Continuing Appropriations Resolution More Documents & Publications ENERGY POLICY ACT OF 2005 Energy Policy Act of 2005 Section 129 of the Consolidated...

  15. NREL GIS Data: Bhutan High Resolution Wind Resource - Datasets...

    Open Energy Info (EERE)

    NREL GIS Data: Bhutan High Resolution Wind Resource This shapefile containing 50 meter height data has been validated by NREL and wind energy meteorological consultants. However,...

  16. Prospects for Electron Imaging with Ultrafast Time Resolution...

    Office of Scientific and Technical Information (OSTI)

    Service, Springfield, VA at www.ntis.gov. Many pivotal aspects of material science, biomechanics, and chemistry would benefit from nanometer imaging with ultrafast time resolution....

  17. Application of Spatially Resolved High Resolution Crystal Spectrometry...

    Office of Scientific and Technical Information (OSTI)

    Crystal Spectrometry to ICF Plasmas Kenneth W. Hill, et. al. 70 PLASMA PHYSICS AND FUSION TECHNOLOGY High Temperature High Temperature High resolution (3; 10 000) 1D...

  18. High-resolution structures of a heterochiral coiled coil (Journal...

    Office of Scientific and Technical Information (OSTI)

    This content will become publicly available on April 27, 2016 Title: High-resolution ... become publicly available on April 27, 2016 Publisher's Version of Record 10.1073...

  19. The Benefits of Stress: Resolution of the Lifshitz Singularity...

    Office of Scientific and Technical Information (OSTI)

    Title: The Benefits of Stress: Resolution of the Lifshitz Singularity Authors: Bao, Ning ; Dong, Xi ; Harrison, Sarah ; Silverstein, Eva ; Stanford U., ITP Stanford U., Phys. ...

  20. PROJECT PROFILE: High-resolution Investigations of Transport...

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

    in Thin-Film Photovoltaic Devices PROJECT PROFILE: High-resolution Investigations of Transport Limiting Defects and Interfaces in Thin-Film Photovoltaic Devices Funding ...

  1. Ultra-High Resolution Electron Microscopy for Catalyst Characterization |

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

    Department of Energy 1 DOE Hydrogen and Fuel Cells Program, and Vehicle Technologies Program Annual Merit Review and Peer Evaluation PDF icon pm029_allard_2011_p.pdf More Documents & Publications Ultra-High Resolution Electron Microscopy for Catalyst Characterization Ultra-high Resolution Electron Microscopy for Catalyst Characterization Catalyst Characterization

  2. High resolution data base for use with MAP

    SciTech Connect (OSTI)

    Tapley, W.C.; Harris, D.B.

    1987-05-05

    A high resolution cartographic data base of thw World is available from the CIA. We obtained this data, extracted portions of the data, and produced cartographic files of varying resolutions. The resulting data files are of the proper format for use with MAP (2), our in-house cartographic plotting program.

  3. HRTEM Imaging of Atoms at Sub-Angstrom Resolution

    SciTech Connect (OSTI)

    O'Keefe, Michael A.; Allard, Lawrence F.; Blom, Douglas A.

    2005-04-06

    John Cowley and his group at Arizona State University pioneered the use of transmission electron microscopy (TEM) for high-resolution imaging. Images were achieved three decades ago showing the crystal unit cell content at better than 4 Angstrom resolution. This achievement enabled researchers to pinpoint the positions of heavy atom columns within the unit cell. Lighter atoms appear as resolution is improved to sub-Angstrom levels. Currently, advanced microscopes can image the columns of the light atoms (carbon, oxygen, nitrogen) that are present in many complex structures, and even the lithium atoms present in some battery materials. Sub-Angstrom imaging, initially achieved by focal-series reconstruction of the specimen exit surface wave, will become common place for next-generation electron microscopes with CS-corrected lenses and monochromated electron beams. Resolution can be quantified in terms of peak separation and inter-peak minimum, but the limits imposed on the attainable resolution by the properties of the micro-scope specimen need to be considered. At extreme resolution the ''size'' of atoms can mean that they will not be resolved even when spaced farther apart than the resolution of the microscope.

  4. Control of entity interactions in a hierarchical variable resolution simulation

    SciTech Connect (OSTI)

    Powell, D.R.

    1997-08-01

    There has long been interest in variable resolution modeling to support military analysis for a broad range of interest areas. Despite the ever-present desire for models of greater fidelity at the expense of analysis and computation resources, models of moderate to low fidelity are still required at many levels of decision-making. Problems can arise due to the issue of consistency among the family of models used for analysis. To address this and other problems, models of variable resolution have been suggested. However, such variable resolution architectures inherently carry their own set of issues which must be resolved in order to be useful. First, what are the structural requirements for a variable resolution model; and second, how are interactions between entities governed, especially when the entities have different resolutions? This paper addresses these issues and discusses key mechanisms needed to develop a variable resolution combat simulation that meets several core requirements for such models: seamless aggregation/disaggregation, appropriate interactions between entities of differing resolution, and control of the aggregation/disaggregation process.

  5. Control of entity interactions in a hierarchical variable resolution simulation

    SciTech Connect (OSTI)

    Powell, D.R.

    1997-10-01

    There has long been interest in variable resolution modeling to support military analysis for a broad range of interest areas. Despite the ever-present desire for models of greater fidelity at the expense of analysis and computation resources, models of moderate to low fidelity are still required at many levels of decision-making. Problems can arise due to the issue of consistency among the family of models used for analysis. To address this and other problems, models of variable resolution have been suggested. However, such variable resolution architectures inherently carry their own set of issues which must be resolved in order to be useful. First, what are the structural requirements for a variable resolution model; and second, how are interactions between entities governed, especially when the entities have different resolutions? This paper addresses these issues and discusses key mechanisms needed to develop a variable resolution combat simulation that meets several core requirements for such models: seamless aggregation/disaggregation, appropriate interactions between entities of differing resolution, and control of the aggregation/disaggregation process.

  6. Geographic resolution issues in RAM transportation risk analysis

    SciTech Connect (OSTI)

    MILLS,G. SCOTT; NEUHAUSER,SIEGLINDE

    2000-04-12

    Over the years that radioactive material (RAM) transportation risk estimates have been calculated using the RADTRAN code, demand for improved geographic resolution of route characteristics, especially density of population neighboring route segments, has led to code improvements that provide more specific route definition. With the advent of geographic information systems (GISs), the achievable resolution of route characteristics is theoretically very high. The authors have compiled population-density data in 1-kilometer increments for routes extending over hundreds of kilometers without impractical expenditures of time. Achievable resolution of analysis is limited, however, by the resolution of available data. U.S. Census data typically have 1-km or better resolution within densely-populated portions of metropolitan areas but census blocks are much larger in rural areas. Geographic resolution of accident-rate data, especially for heavy/combination trucks, are typically tabulated on a statewide basis. These practical realities cause one to ask what level(s) of resolution may be necessary for meaningful risk analysis of transportation actions on a state or interstate scale.

  7. Lynx: A High-Resolution Synthetic Aperture Radar

    SciTech Connect (OSTI)

    Doerry, A.W.; Hensley, W.H.; Pace, F.; Stence, J.; Tsunoda, S.I.; Walker, B.C.; Woodring, M.

    1999-03-08

    Lynx is a high resolution, synthetic aperture radar (SAR) that has been designed and built by Sandia National Laboratories in collaboration with General Atomics (GA). Although Lynx may be operated on a wide variety of manned and unmanned platforms, it is primarily intended to be fielded on unmanned aerial vehicles. In particular, it may be operated on the Predator, I-GNAT, or Prowler II platforms manufactured by GA Aeronautical Systems, Inc. The Lynx production weight is less than 120 lb. and has a slant range of 30 km (in 4 mm/hr rain). It has operator selectable resolution and is capable of 0.1 m resolution in spotlight mode and 0.3 m resolution in stripmap mode. In ground moving target indicator mode, the minimum detectable velocity is 6 knots with a minimum target cross-section of 10 dBsm. In coherent change detection mode, Lynx makes registered, complex image comparisons either of 0.1 m resolution (minimum) spotlight images or of 0.3 m resolution (minimum) strip images. The Lynx user interface features a view manager that allows it to pan and zoom like a video camera. Lynx was developed under corporate finding from GA and will be manufactured by GA for both military and commercial applications. The Lynx system architecture will be presented and some of its unique features will be described. Imagery at the finest resolutions in both spotlight and strip modes have been obtained and will also be presented.

  8. Synthetic aperture radar images with composite azimuth resolution

    DOE Patents [OSTI]

    Bielek, Timothy P; Bickel, Douglas L

    2015-03-31

    A synthetic aperture radar (SAR) image is produced by using all phase histories of a set of phase histories to produce a first pixel array having a first azimuth resolution, and using less than all phase histories of the set to produce a second pixel array having a second azimuth resolution that is coarser than the first azimuth resolution. The first and second pixel arrays are combined to produce a third pixel array defining a desired SAR image that shows distinct shadows of moving objects while preserving detail in stationary background clutter.

  9. High-Resolution Diagrams Now Available | Department of Energy

    Energy Savers [EERE]

    High-Resolution Diagrams Now Available High-Resolution Diagrams Now Available September 28, 2010 - 9:59am Addthis Andrea Spikes Former Communicator at DOE's National Renewable Energy Laboratory The newest content now available on Energy Savers is high-resolution diagrams! We frequently get requests for high-res images that people can use in school reports, for example, and now you don't have to ask us. Nearly every diagram you see will include options for downloading either a JPG or EPS file in

  10. 6 Smart Energy Resolutions for 2016 | Department of Energy

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

    Smart Energy Resolutions for 2016 6 Smart Energy Resolutions for 2016 December 30, 2015 - 5:35pm Addthis Scheduling a home energy assessment is one of the best ways to understand how much energy your home uses. Paul Lester Paul Lester Digital Content Specialist, Office of Public Affairs How can I participate? Have an energy-related goal for 2016? Share it on social media with #EnergyResolution. Go to Energy Saver for more ideas on how to save energy and money at home. As we say goodbye to 2015,

  11. Performance of a High Resolution Cavity Beam Position Monitor System

    SciTech Connect (OSTI)

    Walston, S; Boogert, S; Chung, C; Fitsos, P; Frisch, J; Gronberg, J; Hayano, H; Honda, Y; Kolomensky, Y; Lyapin, A; Malton, S; May, J; McCormick, D; Meller, R; Miller, D; Orimoto, T; Ross, M; Slater, M; Smith, S; Smith, T; Terunuma, N; Thomson, M; Urakawa, J; Vogel, V; Ward, D; White, G

    2006-12-18

    It has been estimated that an RF cavity Beam Position Monitor (BPM) could provide a position measurement resolution of less than one nanometer. We have developed a high resolution cavity BPM and associated electronics. A triplet comprised of these BPMs was installed in the extraction line of the Accelerator Test Facility (ATF) at the High Energy Accelerator Research Organization (KEK) for testing with its ultra-low emittance beam. The three BPMs were each rigidly mounted inside an alignment frame on six variable-length struts which could be used to move the BPMs in position and angle. We have developed novel methods for extracting the position and tilt information from the BPM signals including a robust calibration algorithm which is immune to beam jitter. To date, we have demonstrated a position resolution of 15.6 nm and a tilt resolution of 2.1 {micro}rad over a dynamic range of approximately {+-} 20 {micro}m.

  12. Performance of a High Resolution Cavity Beam Position Monitor System

    SciTech Connect (OSTI)

    Walston, Sean; Boogert, Stewart; Chung, Carl; Fitsos, Joe; Frisch, Joe; Gronberg, Jeff; Hayano, Hitoshi; Honda, Yosuke; Kolomensky, Yury; Lyapin, Alexey; Malton, Stephen; May, Justin; McCormick, Douglas; Meller, Robert; Miller, David John; Orimoto, Toyoko; Ross, Marc; Slater, Mark; Smith, Steve; Smith, Tonee; Terunuma, Nobuhiro; /Fermilab /UC, Berkeley /LBL, Berkeley /Cambridge U. /Royal Holloway, U. of London /Cornell U., LNS /LLNL, Livermore /University Coll. London /SLAC /Caltech /KEK, Tsukuba

    2007-06-08

    It has been estimated that an RF cavity Beam Position Monitor (BPM) could provide a position measurement resolution of less than one nanometer. We have developed a high resolution cavity BPM and associated electronics. A triplet comprised of these BPMs was installed in the extraction line of the Accelerator Test Facility (ATF) at the High Energy Accelerator Research Organization (KEK) for testing with its ultra-low emittance beam. The three BPMs were each rigidly mounted inside an alignment frame on six variable-length struts which could be used to move the BPMs in position and angle. We have developed novel methods for extracting the position and tilt information from the BPM signals including a robust calibration algorithm which is immune to beam jitter. To date, we have demonstrated a position resolution of 15.6 nm and a tilt resolution of 2.1 {mu}rad over a dynamic range of approximately {+-} 20 {mu}m.

  13. Ultra-high Resolution Electron Microscopy for Catalyst Characterizatio...

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

    Merit Review and Peer Evaluation Meeting, May 18-22, 2009 -- Washington D.C. PDF icon pmp24allard.pdf More Documents & Publications Ultra-High Resolution Electron Microscopy...

  14. Exploring electronic structure through high-resolution hard x...

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

    Laboratory Modern high brilliance beamlines coupled with recent advances in hard-x-ray optics are establishing high-resolution hard x-ray spectroscopies as a powerful analytical...

  15. Sector 3 : High Resolution X-ray Scattering | Advanced Photon...

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

    & workshops IXN Group Useful Links Current APS status ESAF System GUP System X-Ray Science Division My APS Portal Sector 3 : High Resolution X-ray Scattering Sector 3 is...

  16. Supercomputers Fuel Global High-Resolution Climate Models

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

    Supercomputers Fuel Global High-Resolution Climate Models Supercomputers Fuel Global High-Resolution Climate Models Berkeley Lab Researcher Says Climate Science is Entering New Golden Age November 12, 2014 Contact: Julie Chao, jchao@lbl.gov, 510.486.6491 wehnerclimate2 Simulated and observed annual maximum 5 day accumulated precipitation over land points, averaged. Observations are calculated from the period 1979 to 1999. Model results are calculated from the period 1979 to 2005. Not long ago,

  17. High-resolution radiography by means of a hodoscope

    DOE Patents [OSTI]

    De Volpi, Alexander (Hinsdale, IL)

    1978-01-01

    The fast neutron hodoscope, a device that produces neutron radiographs with coarse space resolution in a short time, is modified to produce neutron or gamma radiographs of relatively thick samples and with high space resolution. The modification comprises motorizing a neutron and gamma collimator to permit a controlled scanning pattern, simultaneous collection of data in a number of hodoscope channels over a period of time, and computerized image reconstruction of the data thus gathered.

  18. Note: Using fast digitizer acquisition and flexible resolution to enhance

    Office of Scientific and Technical Information (OSTI)

    noise cancellation for high performance nanosecond transient absorbance spectroscopy (Journal Article) | SciTech Connect Note: Using fast digitizer acquisition and flexible resolution to enhance noise cancellation for high performance nanosecond transient absorbance spectroscopy Citation Details In-Document Search This content will become publicly available on June 24, 2016 Title: Note: Using fast digitizer acquisition and flexible resolution to enhance noise cancellation for high

  19. Regional Projections of Climate on Decadal Time Scales: High resolution

    Office of Scientific and Technical Information (OSTI)

    global predictions and regionally resolved source response studies (Technical Report) | SciTech Connect Regional Projections of Climate on Decadal Time Scales: High resolution global predictions and regionally resolved source response studies Citation Details In-Document Search Title: Regional Projections of Climate on Decadal Time Scales: High resolution global predictions and regionally resolved source response studies Authors: Tribbia, Joe [1] ; Zhang, Minghua [2] + Show Author

  20. High-Resolution Photocurrent Microscopy Using Near-Field

    Office of Scientific and Technical Information (OSTI)

    Cathodoluminescence of Quantum Dots. (Journal Article) | SciTech Connect High-Resolution Photocurrent Microscopy Using Near-Field Cathodoluminescence of Quantum Dots. Citation Details In-Document Search Title: High-Resolution Photocurrent Microscopy Using Near-Field Cathodoluminescence of Quantum Dots. Abstract not provided. Authors: Talin, Albert Alec Publication Date: 2013-05-01 OSTI Identifier: 1145404 Report Number(s): SAND2013-4169J 453180 DOE Contract Number: DE-AC04-94AL85000 Resource

  1. Design of a Subnanometer Resolution Beam Position Monitor for Dielectric

    Office of Scientific and Technical Information (OSTI)

    Laser Accelerators (Journal Article) | SciTech Connect Design of a Subnanometer Resolution Beam Position Monitor for Dielectric Laser Accelerators Citation Details In-Document Search Title: Design of a Subnanometer Resolution Beam Position Monitor for Dielectric Laser Accelerators Authors: Soong, Ken ; Byer, Robert L. ; /Stanford U., Appl. Phys. Dept. /SLAC Publication Date: 2013-03-01 OSTI Identifier: 1074185 Report Number(s): SLAC-PUB-15383 DOE Contract Number: AC02-76SF00515 Resource

  2. Electromagnetic eXtended Finite Elements for Accurate Resolution of

    Office of Scientific and Technical Information (OSTI)

    Multi-Material Cells. (Conference) | SciTech Connect Electromagnetic eXtended Finite Elements for Accurate Resolution of Multi-Material Cells. Citation Details In-Document Search Title: Electromagnetic eXtended Finite Elements for Accurate Resolution of Multi-Material Cells. Abstract not provided. Authors: Siefert, Christopher ; Voth, Thomas Eugene ; Bochev, Pavel B. Publication Date: 2012-04-01 OSTI Identifier: 1117558 Report Number(s): SAND2012-3076C 481119 DOE Contract Number:

  3. Ultra-High Resolution Electron Microscopy for Catalyst Characterization |

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

    Department of Energy 0 DOE Vehicle Technologies and Hydrogen Programs Annual Merit Review and Peer Evaluation Meeting, June 7-11, 2010 -- Washington D.C. PDF icon pm029_allard_2010_p.pdf More Documents & Publications Ultra-High Resolution Electron Microscopy for Catalyst Characterization Ultra-high Resolution Electron Microscopy for Catalyst Characterization Characterization of Catalysts for Aftertreatment and Biomass-derived Fuels: Success Stories from the High Temperature Materials

  4. Lasers, Electron Beams and New Years Resolutions | Department of Energy

    Office of Environmental Management (EM)

    Lasers, Electron Beams and New Years Resolutions Lasers, Electron Beams and New Years Resolutions March 2, 2011 - 3:43pm Addthis Charles Rousseaux Charles Rousseaux Senior Communications Specialist (detailee) What are the key facts? The electron beam that powers Jefferson Lab's Free-Electron Laser pumped out a record power input of 500 kilvolts using an innovative energy-recovery system that amplifies energy with far less power. A sufficiently powerful laser could make an effective defensive

  5. Imaging Lithium Atoms at Sub-Angstrom Resolution

    SciTech Connect (OSTI)

    O'Keefe, Michael A.; Shao-Horn, Yang

    2005-01-03

    John Cowley and his group at ASU were pioneers in the use of transmission electron microscopy (TEM) for high-resolution imaging. Three decades ago they achieved images showing the crystal unit cell content at better than 4A resolution. Over the years, this achievement has inspired improvements in resolution that have enabled researchers to pinpoint the positions of heavy atom columns within the cell. More recently, this ability has been extended to light atoms as resolution has improved. Sub-Angstrom resolution has enabled researchers to image the columns of light atoms (carbon, oxygen and nitrogen) that are present in many complex structures. By using sub-Angstrom focal-series reconstruction of the specimen exit surface wave to image columns of cobalt, oxygen, and lithium atoms in a transition metal oxide structure commonly used as positive electrodes in lithium rechargeable batteries, we show that the range of detectable light atoms extends to lithium. HRTEM at sub-Angstrom resolution will provide the essential role of experimental verification for the emergent nanotech revolution. Our results foreshadow those to be expected from next-generation TEMs with CS-corrected lenses and monochromated electron beams.

  6. Oblique reconstructions in tomosynthesis. II. Super-resolution

    SciTech Connect (OSTI)

    Acciavatti, Raymond J.; Maidment, Andrew D. A.

    2013-11-15

    Purpose: In tomosynthesis, super-resolution has been demonstrated using reconstruction planes parallel to the detector. Super-resolution allows for subpixel resolution relative to the detector. The purpose of this work is to develop an analytical model that generalizes super-resolution to oblique reconstruction planes.Methods: In a digital tomosynthesis system, a sinusoidal test object is modeled along oblique angles (i.e., pitches) relative to the plane of the detector in a 3D divergent-beam acquisition geometry. To investigate the potential for super-resolution, the input frequency is specified to be greater than the alias frequency of the detector. Reconstructions are evaluated in an oblique plane along the extent of the object using simple backprojection (SBP) and filtered backprojection (FBP). By comparing the amplitude of the reconstruction against the attenuation coefficient of the object at various frequencies, the modulation transfer function (MTF) is calculated to determine whether modulation is within detectable limits for super-resolution. For experimental validation of super-resolution, a goniometry stand was used to orient a bar pattern phantom along various pitches relative to the breast support in a commercial digital breast tomosynthesis system.Results: Using theoretical modeling, it is shown that a single projection image cannot resolve a sine input whose frequency exceeds the detector alias frequency. The high frequency input is correctly visualized in SBP or FBP reconstruction using a slice along the pitch of the object. The Fourier transform of this reconstructed slice is maximized at the input frequency as proof that the object is resolved. Consistent with the theoretical results, experimental images of a bar pattern phantom showed super-resolution in oblique reconstructions. At various pitches, the highest frequency with detectable modulation was determined by visual inspection of the bar patterns. The dependency of the highest detectable frequency on pitch followed the same trend as the analytical model. It was demonstrated that super-resolution is not achievable if the pitch of the object approaches 90, corresponding to the case in which the test frequency is perpendicular to the breast support. Only low frequency objects are detectable at pitches close to 90.Conclusions: This work provides a platform for investigating super-resolution in oblique reconstructions for tomosynthesis. In breast imaging, this study should have applications in visualizing microcalcifications and other subtle signs of cancer.

  7. Evolution of spatial resolution in breast CT at UC Davis

    SciTech Connect (OSTI)

    Gazi, Peymon M.; Yang, Kai; Burkett, George W.; Aminololama-Shakeri, Shadi; Anthony Seibert, J.; Boone, John M.

    2015-04-15

    Purpose: Dedicated breast computed tomography (bCT) technology for the purpose of breast cancer screening has been a focus of research at UC Davis since the late 1990s. Previous studies have shown that improvement in spatial resolution characteristics of this modality correlates with greater microcalcification detection, a factor considered a potential limitation of bCT. The aim of this study is to improve spatial resolution as characterized by the modulation transfer function (MTF) via changes in the scanner hardware components and operational schema. Methods: Four prototypes of pendant-geometry, cone-beam breast CT scanners were designed and developed spanning three generations of design evolution. To improve the system MTF in each bCT generation, modifications were made to the imaging components (x-ray tube and flat-panel detector), system geometry (source-to-isocenter and detector distance), and image acquisition parameters (technique factors, number of projections, system synchronization scheme, and gantry rotational speed). Results: Characterization of different generations of bCT systems shows these modifications resulted in a 188% improvement of the limiting MTF properties from the first to second generation and an additional 110% from the second to third. The intrinsic resolution degradation in the azimuthal direction observed in the first generation was corrected by changing the acquisition from continuous to pulsed x-ray acquisition. Utilizing a high resolution detector in the third generation, along with modifications made in system geometry and scan protocol, resulted in a 125% improvement in limiting resolution. An additional 39% improvement was obtained by changing the detector binning mode from 2 2 to 1 1. Conclusions: These results underscore the advancement in spatial resolution characteristics of breast CT technology. The combined use of a pulsed x-ray system, higher resolution flat-panel detector and changing the scanner geometry and image acquisition logic resulted in a significant fourfold improvement in MTF.

  8. Observation of super-resolution in digital breast tomosynthesis

    SciTech Connect (OSTI)

    Acciavatti, Raymond J.; Maidment, Andrew D. A.

    2012-12-15

    Purpose: Digital breast tomosynthesis (DBT) is a 3D x-ray imaging modality in which tomographic sections of the breast are generated from a limited range of tube angles. Because oblique x-ray incidence shifts the image of an object in subpixel detector element increments with each increasing projection angle, it is demonstrated that DBT is capable of super-resolution (i.e., subpixel resolution). Methods: By convention, DBT reconstructions are performed on planes parallel to the breast support at various depths of the breast volume. In order for resolution in each reconstructed slice to be comparable to the detector, the pixel size should match that of the detector elements; hence, the highest frequency that can be resolved in the plane of reconstruction is the alias frequency of the detector. This study considers reconstruction grids with much smaller pixelation to visualize higher frequencies. For analytical proof of super-resolution, a theoretical framework is developed in which the reconstruction of a high frequency sinusoidal input is calculated using both simple backprojection (SBP) and filtered backprojection. To study the frequency spectrum of the reconstruction, its Fourier transform is also determined. The experimental feasibility of super-resolution was investigated by acquiring images of a bar pattern phantom with frequencies higher than the detector alias frequency. Results: Using analytical modeling, it is shown that the central projection cannot resolve frequencies exceeding the detector alias frequency. The Fourier transform of the central projection is maximized at a lower frequency than the input as evidence of aliasing. By contrast, SBP reconstruction can resolve the input, and its Fourier transform is correctly maximized at the input frequency. Incorporating filters into the reconstruction smoothens pixelation artifacts in the spatial domain and reduces spectral leakage in the Fourier domain. It is also demonstrated that the existence of super-resolution is dependent on position in the reconstruction and on the directionality of the input frequency. Consistent with the analytical results, experimental reconstructions of bar patterns showed visibility of frequencies greater than the detector alias frequency. Super-resolution was present at positions predicted from analytical modeling. Conclusions: This work demonstrates the existence of super-resolution in DBT. Super-resolution has the potential to impact the visualization of fine structural details in the breast, such as microcalcifications and other subtle signs of cancer.

  9. Broadband high resolution X-ray spectral analyzer

    DOE Patents [OSTI]

    Silver, E.H.; Legros, M.; Madden, N.W.; Goulding, F.; Landis, D.

    1998-07-07

    A broad bandwidth high resolution X-ray fluorescence spectrometer has a performance that is superior in many ways to those currently available. It consists of an array of 4 large area microcalorimeters with 95% quantum efficiency at 6 keV and it produces X-ray spectra between 0.2 keV and 7 keV with an energy resolution of 7 to 10 eV. The resolution is obtained at input count rates per array element of 10 to 50 Hz in real-time, with analog pulse processing and thermal pile-up rejection. This performance cannot be matched by currently available X-ray spectrometers. The detectors are incorporated into a compact and portable cryogenic refrigerator system that is ready for use in many analytical spectroscopy applications as a tool for X-ray microanalysis or in research applications such as laboratory and astrophysical X-ray and particle spectroscopy. 6 figs.

  10. Broadband high resolution X-ray spectral analyzer

    DOE Patents [OSTI]

    Silver, Eric H. (Berkeley, CA); Legros, Mark (Berkeley, CA); Madden, Norm W. (Livermore, CA); Goulding, Fred (Lafayette, CA); Landis, Don (Pinole, CA)

    1998-01-01

    A broad bandwidth high resolution x-ray fluorescence spectrometer has a performance that is superior in many ways to those currently available. It consists of an array of 4 large area microcalorimeters with 95% quantum efficiency at 6 keV and it produces x-ray spectra between 0.2 keV and 7 keV with an energy resolution of 7 to 10 eV. The resolution is obtained at input count rates per array element of 10 to 50 Hz in real-time, with analog pulse processing and thermal pile-up rejection. This performance cannot be matched by currently available x-ray spectrometers. The detectors are incorporated into a compact and portable cryogenic refrigerator system that is ready for use in many analytical spectroscopy applications as a tool for x-ray microanalysis or in research applications such as laboratory and astrophysical x-ray and particle spectroscopy.

  11. Improved Spatial Resolution in Thick, Fully-Depleted CCDs withEnhanced...

    Office of Scientific and Technical Information (OSTI)

    Improved Spatial Resolution in Thick, Fully-Depleted CCDs withEnhanced Red Sensitivity Citation Details In-Document Search Title: Improved Spatial Resolution in Thick,...

  12. High resolution collimator system for X-ray detector

    DOE Patents [OSTI]

    Eberhard, Jeffrey W.; Cain, Dallas E.

    1987-01-01

    High resolution in an X-ray computerized tomography (CT) inspection system is achieved by using a collimator/detector combination to limit the beam width of the X-ray beam incident on a detector element to the desired resolution width. In a detector such as a high pressure Xenon detector array, a narrow tapered collimator is provided above a wide detector element. The collimator slits have any desired width, as small as a few mils at the top, the slit width is easily controlled, and they are fabricated on standard machines. The slit length determines the slice thickness of the CT image.

  13. High resolution absorption spectroscopy of exploding wire plasmas using an

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

    x-pinch x-ray source and spherically bent crystal (Journal Article) | DOE PAGES High resolution absorption spectroscopy of exploding wire plasmas using an x-pinch x-ray source and spherically bent crystal Title: High resolution absorption spectroscopy of exploding wire plasmas using an x-pinch x-ray source and spherically bent crystal Authors: Knapp, P. F. [1] ; Pikuz, S. A. [1] ; Shelkovenko, T. A. [1] ; Hammer, D. A. [1] ; Hansen, S. B. [2] + Show Author Affiliations Laboratory of Plasma

  14. High resolution absorption spectroscopy of exploding wire plasmas using an

    Office of Scientific and Technical Information (OSTI)

    x-pinch x-ray source and spherically bent crystal (Journal Article) | DOE PAGES Published Article: High resolution absorption spectroscopy of exploding wire plasmas using an x-pinch x-ray source and spherically bent crystal Title: High resolution absorption spectroscopy of exploding wire plasmas using an x-pinch x-ray source and spherically bent crystal Authors: Knapp, P. F. [1] ; Pikuz, S. A. [1] ; Shelkovenko, T. A. [1] ; Hammer, D. A. [1] ; Hansen, S. B. [2] + Show Author Affiliations

  15. ACQUISITION LETTER DEAR Part 933 | Department of Energy

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

    ACQUISITION LETTER DEAR Part 933 » ACQUISITION LETTER DEAR Part 933 ACQUISITION LETTER DEAR Part 933 This AL establishes policy and provides guidance for the use of alternative dispute resolution techniques in connection with disputes that arise under the Contract Disputes Act (CDA) of 1978, 41 U.S.C. sections 601-613. PDF icon ACQUISITION LETTER More Documents & Publications Microsoft Word - ACQUISITION LETTER.doc OPAM Policy Acquisition Guides Chapter 33 - Protests, Disput

  16. Decreasing range resolution of a SAR image to permit correction of motion measurement errors beyond the SAR range resolution

    DOE Patents [OSTI]

    Doerry, Armin W. (Albuquerque, NM); Heard, Freddie E. (Albuquerque, NM); Cordaro, J. Thomas (Albuquerque, NM)

    2010-07-20

    Motion measurement errors that extend beyond the range resolution of a synthetic aperture radar (SAR) can be corrected by effectively decreasing the range resolution of the SAR in order to permit measurement of the error. Range profiles can be compared across the slow-time dimension of the input data in order to estimate the error. Once the error has been determined, appropriate frequency and phase correction can be applied to the uncompressed input data, after which range and azimuth compression can be performed to produce a desired SAR image.

  17. Radiology utilizing a gas multiwire detector with resolution enhancement

    DOE Patents [OSTI]

    Majewski, Stanislaw (Grafton, VA); Majewski, Lucasz A. (Grafton, VA)

    1999-09-28

    This invention relates to a process and apparatus for obtaining filmless, radiological, digital images utilizing a gas multiwire detector. Resolution is enhanced through projection geometry. This invention further relates to imaging systems for X-ray examination of patients or objects, and is particularly suited for mammography.

  18. Probe for high resolution NMR with sample reorientation

    DOE Patents [OSTI]

    Pines, A.; Samoson, A.

    1990-02-06

    An improved NMR probe and method are described which substantially improve the resolution of NMR measurements made on powdered or amorphous or otherwise orientationally disordered samples. The apparatus mechanically varies the orientation of the sample such that the time average of two or more sets of spherical harmonic functions are zero. 8 figs.

  19. HIGH RESOLUTION RESISTIVITY LEAK DETECTION DATA PROCESSING & EVALUATION MEHTODS & REQUIREMENTS

    SciTech Connect (OSTI)

    SCHOFIELD JS

    2007-10-04

    This document has two purposes: {sm_bullet} Describe how data generated by High Resolution REsistivity (HRR) leak detection (LD) systems deployed during single-shell tank (SST) waste retrieval operations are processed and evaluated. {sm_bullet} Provide the basic review requirements for HRR data when Hrr is deployed as a leak detection method during SST waste retrievals.

  20. High-resolution electron microscopy of advanced materials

    SciTech Connect (OSTI)

    Mitchell, T.E.; Kung, H.H.; Sickafus, K.E.; Gray, G.T. III; Field, R.D.; Smith, J.F.

    1997-11-01

    This final report chronicles a three-year, Laboratory Directed Research and Development (LDRD) project at Los Alamos National Laboratory (LANL). The High-Resolution Electron Microscopy Facility has doubled in size and tripled in quality since the beginning of the three-year period. The facility now includes a field-emission scanning electron microscope, a 100 kV field-emission scanning transmission electron microscope (FE-STEM), a 300 kV field-emission high-resolution transmission electron microscope (FE-HRTEM), and a 300 kV analytical transmission electron microscope. A new orientation imaging microscope is being installed. X-ray energy dispersive spectrometers for chemical analysis are available on all four microscopes; parallel electron energy loss spectrometers are operational on the FE-STEM and FE-HRTEM. These systems enable evaluation of local atomic bonding, as well as chemical composition in nanometer-scale regions. The FE-HRTEM has a point-to-point resolution of 1.6 {angstrom}, but the resolution can be pushed to its information limit of 1 {angstrom} by computer reconstruction of a focal series of images. HRTEM has been used to image the atomic structure of defects such as dislocations, grain boundaries, and interfaces in a variety of materials from superconductors and ferroelectrics to structural ceramics and intermetallics.

  1. High-resolution ionization detector and array of such detectors

    DOE Patents [OSTI]

    McGregor, Douglas S. (Ypsilanti, MI); Rojeski, Ronald A. (Pleasanton, CA)

    2001-01-16

    A high-resolution ionization detector and an array of such detectors are described which utilize a reference pattern of conductive or semiconductive material to form interaction, pervious and measurement regions in an ionization substrate of, for example, CdZnTe material. The ionization detector is a room temperature semiconductor radiation detector. Various geometries of such a detector and an array of such detectors produce room temperature operated gamma ray spectrometers with relatively high resolution. For example, a 1 cm.sup.3 detector is capable of measuring .sup.137 Cs 662 keV gamma rays with room temperature energy resolution approaching 2% at FWHM. Two major types of such detectors include a parallel strip semiconductor Frisch grid detector and the geometrically weighted trapezoid prism semiconductor Frisch grid detector. The geometrically weighted detector records room temperature (24.degree. C.) energy resolutions of 2.68% FWHM for .sup.137 Cs 662 keV gamma rays and 2.45% FWHM for .sup.60 Co 1.332 MeV gamma rays. The detectors perform well without any electronic pulse rejection, correction or compensation techniques. The devices operate at room temperature with simple commercially available NIM bin electronics and do not require special preamplifiers or cooling stages for good spectroscopic results.

  2. Probe for high resolution NMR with sample reorientation

    DOE Patents [OSTI]

    Pines, Alexander (Berkeley, CA); Samoson, Ago (Tallinn, SU)

    1990-01-01

    An improved NMR probe and method are described which substantially improve the resolution of NMR measurements made on powdered or amorphous or otherwise orientationally disordered samples. The apparatus mechanically varies the orientation of the sample such that the time average of two or more sets of spherical harmonic functions are zero.

  3. The spectral element method (SEM) on variable-resolution grids: evaluating grid sensitivity and resolution-aware numerical viscosity

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

    Guba, O.; Taylor, M. A.; Ullrich, P. A.; Overfelt, J. R.; Levy, M. N.

    2014-11-27

    We evaluate the performance of the Community Atmosphere Model's (CAM) spectral element method on variable-resolution grids using the shallow-water equations in spherical geometry. We configure the method as it is used in CAM, with dissipation of grid scale variance, implemented using hyperviscosity. Hyperviscosity is highly scale selective and grid independent, but does require a resolution-dependent coefficient. For the spectral element method with variable-resolution grids and highly distorted elements, we obtain the best results if we introduce a tensor-based hyperviscosity with tensor coefficients tied to the eigenvalues of the local element metric tensor. The tensor hyperviscosity is constructed so that, formore » regions of uniform resolution, it matches the traditional constant-coefficient hyperviscosity. With the tensor hyperviscosity, the large-scale solution is almost completely unaffected by the presence of grid refinement. This later point is important for climate applications in which long term climatological averages can be imprinted by stationary inhomogeneities in the truncation error. We also evaluate the robustness of the approach with respect to grid quality by considering unstructured conforming quadrilateral grids generated with a well-known grid-generating toolkit and grids generated by SQuadGen, a new open source alternative which produces lower valence nodes.« less

  4. The spectral element method on variable resolution grids: evaluating grid sensitivity and resolution-aware numerical viscosity

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

    Guba, O.; Taylor, M. A.; Ullrich, P. A.; Overfelt, J. R.; Levy, M. N.

    2014-06-25

    We evaluate the performance of the Community Atmosphere Model's (CAM) spectral element method on variable resolution grids using the shallow water equations in spherical geometry. We configure the method as it is used in CAM, with dissipation of grid scale variance implemented using hyperviscosity. Hyperviscosity is highly scale selective and grid independent, but does require a resolution dependent coefficient. For the spectral element method with variable resolution grids and highly distorted elements, we obtain the best results if we introduce a tensor-based hyperviscosity with tensor coefficients tied to the eigenvalues of the local element metric tensor. The tensor hyperviscosity ismore » constructed so that for regions of uniform resolution it matches the traditional constant coefficient hyperviscsosity. With the tensor hyperviscosity the large scale solution is almost completely unaffected by the presence of grid refinement. This later point is important for climate applications where long term climatological averages can be imprinted by stationary inhomogeneities in the truncation error. We also evaluate the robustness of the approach with respect to grid quality by considering unstructured conforming quadrilateral grids generated with a well-known grid-generating toolkit and grids generated by SQuadGen, a new open source alternative which produces lower valence nodes.« less

  5. Advanced Test Reactor Design Basis Reconstitution Project Issue Resolution Process

    SciTech Connect (OSTI)

    Steven D. Winter; Gregg L. Sharp; William E. Kohn; Richard T. McCracken

    2007-05-01

    The Advanced Test Reactor (ATR) Design Basis Reconstitution Program (DBRP) is a structured assessment and reconstitution of the design basis for the ATR. The DBRP is designed to establish and document the ties between the Document Safety Analysis (DSA), design basis, and actual system configurations. Where the DBRP assessment team cannot establish a link between these three major elements, a gap is identified. Resolutions to identified gaps represent configuration management and design basis recovery actions. The proposed paper discusses the process being applied to define, evaluate, report, and address gaps that are identified through the ATR DBRP. Design basis verification may be performed or required for a nuclear facility safety basis on various levels. The process is applicable to large-scale design basis reconstitution efforts, such as the ATR DBRP, or may be scaled for application on smaller projects. The concepts are applicable to long-term maintenance of a nuclear facility safety basis and recovery of degraded safety basis components. The ATR DBRP assessment team has observed numerous examples where a clear and accurate link between the DSA, design basis, and actual system configuration was not immediately identifiable in supporting documentation. As a result, a systematic approach to effectively document, prioritize, and evaluate each observation is required. The DBRP issue resolution process provides direction for consistent identification, documentation, categorization, and evaluation, and where applicable, entry into the determination process for a potential inadequacy in the safety analysis (PISA). The issue resolution process is a key element for execution of the DBRP. Application of the process facilitates collection, assessment, and reporting of issues identified by the DBRP team. Application of the process results in an organized database of safety basis gaps and prioritized corrective action planning and resolution. The DBRP team follows the ATR DBRP issue resolution process which provides a method for the team to promptly sort and prioritize questions and issues between those that can be addressed as a normal part of the reconstitution project and those that are to be handle as PISAs. Presentation of the DBRP issue resolution process provides an example for similar activities that may be required at other facilities within the Department of Energy complex.

  6. Which Bulb Is Right for You? (High-Resolution EPS Billboard) | Department

    Energy Savers [EERE]

    of Energy EPS Billboard) Which Bulb Is Right for You? (High-Resolution EPS Billboard) High-resolution EPS of billboard reading, 'Which bulb is right for you? Save energy, save money. Energysaver.gov.' File DoE_Billboard_Which_Bulb.eps More Documents & Publications Which Bulb Is Right for You? (High-Resolution JPG Billboard) Which Bulb Is Right for You? (Low-Resolution JPG Billboard) Goodbye, Watts. Hello, Lumens. (High-Resolution EPS

  7. Which Bulb Is Right for You? (High-Resolution JPG Billboard) | Department

    Energy Savers [EERE]

    of Energy JPG Billboard) Which Bulb Is Right for You? (High-Resolution JPG Billboard) HIgh-resolution JPG of billboard reading, 'Which bulb is right for you? Save energy, save money. Energysaver.gov.' Image icon DoE_Billboard_Which_Bulb.jpg More Documents & Publications Which Bulb Is Right for You? (High-Resolution EPS Billboard) Which Bulb Is Right for You? (Low-Resolution JPG Billboard) Goodbye, Watts. Hello, Lumens. (High-Resolution JPG

  8. DOE Signs Agreement Allowing National Labs to Use the U.S. Civilian...

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

    lab and facility management and operation (M&O) contractors to employ the CBCA for mediation, arbitration, and other alternative dispute resolution services. Earlier this year,...

  9. News Archive | Department of Energy

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

    lab and facility management and operation (M&O) contractors to employ the CBCA for mediation, arbitration, and other alternative dispute resolution services. Earlier this year,...

  10. HIGH SPATIAL RESOLUTION OBSERVATIONS OF LOOPS IN THE SOLAR CORONA

    SciTech Connect (OSTI)

    Brooks, David H.; Ugarte-Urra, Ignacio [College of Science, George Mason University, 4400 University Drive, Fairfax, VA 22030 (United States); Warren, Harry P. [Space Science Division, Naval Research Laboratory, Washington, DC 20375 (United States); Winebarger, Amy R. [NASA Marshall Space Flight Center, ZP 13, Huntsville, AL 35812 (United States)

    2013-08-01

    Understanding how the solar corona is structured is of fundamental importance to determine how the Sun's upper atmosphere is heated to high temperatures. Recent spectroscopic studies have suggested that an instrument with a spatial resolution of 200 km or better is necessary to resolve coronal loops. The High Resolution Coronal Imager (Hi-C) achieved this performance on a rocket flight in 2012 July. We use Hi-C data to measure the Gaussian widths of 91 loops observed in the solar corona and find a distribution that peaks at about 270 km. We also use Atmospheric Imaging Assembly data for a subset of these loops and find temperature distributions that are generally very narrow. These observations provide further evidence that loops in the solar corona are often structured at a scale of several hundred kilometers, well above the spatial scale of many proposed physical mechanisms.

  11. High resolution reservoir geological modelling using outcrop information

    SciTech Connect (OSTI)

    Zhang Changmin; Lin Kexiang; Liu Huaibo

    1997-08-01

    This is China`s first case study of high resolution reservoir geological modelling using outcrop information. The key of the modelling process is to build a prototype model and using the model as a geological knowledge bank. Outcrop information used in geological modelling including seven aspects: (1) Determining the reservoir framework pattern by sedimentary depositional system and facies analysis; (2) Horizontal correlation based on the lower and higher stand duration of the paleo-lake level; (3) Determining the model`s direction based on the paleocurrent statistics; (4) Estimating the sandbody communication by photomosaic and profiles; (6) Estimating reservoir properties distribution within sandbody by lithofacies analysis; and (7) Building the reservoir model in sandbody scale by architectural element analysis and 3-D sampling. A high resolution reservoir geological model of Youshashan oil field has been built by using this method.

  12. Collimator application for microchannel plate image intensifier resolution improvement

    DOE Patents [OSTI]

    Thomas, Stanley W. (Livermore, CA)

    1996-02-27

    A collimator is included in a microchannel plate image intensifier (MCPI). Collimators can be useful in improving resolution of MCPIs by eliminating the scattered electron problem and by limiting the transverse energy of electrons reaching the screen. Due to its optical absorption, a collimator will also increase the extinction ratio of an intensifier by approximately an order of magnitude. Additionally, the smooth surface of the collimator will permit a higher focusing field to be employed in the MCP-to-collimator region than is currently permitted in the MCP-to-screen region by the relatively rough and fragile aluminum layer covering the screen. Coating the MCP and collimator surfaces with aluminum oxide appears to permit additional significant increases in the field strength, resulting in better resolution.

  13. Turbine component casting core with high resolution region

    DOE Patents [OSTI]

    Kamel, Ahmed; Merrill, Gary B.

    2014-08-26

    A hollow turbine engine component with complex internal features can include a first region and a second, high resolution region. The first region can be defined by a first ceramic core piece formed by any conventional process, such as by injection molding or transfer molding. The second region can be defined by a second ceramic core piece formed separately by a method effective to produce high resolution features, such as tomo lithographic molding. The first core piece and the second core piece can be joined by interlocking engagement that once subjected to an intermediate thermal heat treatment process thermally deform to form a three dimensional interlocking joint between the first and second core pieces by allowing thermal creep to irreversibly interlock the first and second core pieces together such that the joint becomes physically locked together providing joint stability through thermal processing.

  14. Automated analysis for microcalcifications in high resolution digital mammograms

    DOE Patents [OSTI]

    Mascio, Laura N.

    1996-01-01

    A method for automatically locating microcalcifications indicating breast cancer. The invention assists mammographers in finding very subtle microcalcifications and in recognizing the pattern formed by all the microcalcifications. It also draws attention to microcalcifications that might be overlooked because a more prominent feature draws attention away from an important object. A new filter has been designed to weed out false positives in one of the steps of the method. Previously, iterative selection threshold was used to separate microcalcifications from the spurious signals resulting from texture or other background. A Selective Erosion or Enhancement (SEE) Filter has been invented to improve this step. Since the algorithm detects areas containing potential calcifications on the mammogram, it can be used to determine which areas need be stored at the highest resolution available, while, in addition, the full mammogram can be reduced to an appropriate resolution for the remaining cancer signs.

  15. Automated analysis for microcalcifications in high resolution digital mammograms

    DOE Patents [OSTI]

    Mascio, L.N.

    1996-12-17

    A method is disclosed for automatically locating microcalcifications indicating breast cancer. The invention assists mammographers in finding very subtle microcalcifications and in recognizing the pattern formed by all the microcalcifications. It also draws attention to microcalcifications that might be overlooked because a more prominent feature draws attention away from an important object. A new filter has been designed to weed out false positives in one of the steps of the method. Previously, iterative selection threshold was used to separate microcalcifications from the spurious signals resulting from texture or other background. A Selective Erosion or Enhancement (SEE) Filter has been invented to improve this step. Since the algorithm detects areas containing potential calcifications on the mammogram, it can be used to determine which areas need be stored at the highest resolution available, while, in addition, the full mammogram can be reduced to an appropriate resolution for the remaining cancer signs. 8 figs.

  16. allows researchers to capture high-resolution images

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

    allows researchers to capture high-resolution images - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Fuel Cycle Defense Waste

  17. Peak fitting applied to low-resolution enrichment measurements

    SciTech Connect (OSTI)

    Bracken, D.; McKown, T.; Sprinkle, J.K. Jr.; Gunnink, R.; Kartoshov, M.; Kuropatwinski, J.; Raphina, G.; Sokolov, G.

    1998-12-01

    Materials accounting at bulk processing facilities that handle low enriched uranium consists primarily of weight and uranium enrichment measurements. Most low enriched uranium processing facilities draw separate materials balances for each enrichment handled at the facility. The enrichment measurement determines the isotopic abundance of the {sup 235}U, thereby determining the proper strata for the item, while the weight measurement generates the primary accounting value for the item. Enrichment measurements using the passive gamma radiation from uranium were developed for use in US facilities a few decades ago. In the US, the use of low-resolution detectors was favored because they cost less, are lighter and more robust, and don`t require the use of liquid nitrogen. When these techniques were exported to Europe, however, difficulties were encountered. Two of the possible root causes were discovered to be inaccurate knowledge of the container wall thickness and higher levels of minor isotopes of uranium introduced by the use of reactor returns in the enrichment plants. the minor isotopes cause an increase in the Compton continuum under the 185.7 keV assay peak and the observance of interfering 238.6 keV gamma rays. The solution selected to address these problems was to rely on the slower, more costly, high-resolution gamma ray detectors when the low-resolution method failed. Recently, these gamma ray based enrichment measurement techniques have been applied to Russian origin material. The presence of interfering gamma radiation from minor isotopes was confirmed. However, with the advent of fast portable computers, it is now possible to apply more sophisticated analysis techniques to the low-resolution data in the field. Explicit corrections for Compton background, gamma rays from {sup 236}U daughters, and the attenuation caused by thick containers can be part of the least squares fitting routine. Preliminary results from field measurements in Kazakhstan will be discussed.

  18. Posters The Impacts of Data Error and Model Resolution

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

    7 Posters The Impacts of Data Error and Model Resolution on the Result of Variational Data Assimilation S. Yang and Q. Xu Cooperative Institute of Mesoscale Meteorological Studies University of Oklahoma Norman, Oklahoma Introduction The representativeness and accuracy of the measurements or estimates of the lateral boundary fluxes and surface fluxes are crucial for the single-column model and budget studies of climatic variables over Atmospheric Radiation Measurement (ARM) sites. Since the

  19. LandScan 2013 High Resolution Global Population Data Set

    Energy Science and Technology Software Center (OSTI)

    2014-07-01

    The LandScan data set is a worldwide population database compiled on a 30"x30" latitude/longitude grid. Census counts (at sub-national level) were apportioned to each grid cell based on likelihood coefficients, which are based on land cover, slope, road proximity, high-resolution imagery, and other data sets. The LandScan data set was developed as part of Oak Ridge National Laboratory (ORNL) Global Population Project for estimating ambient populations at risk.

  20. A micron resolution optical scanner for characterization of silicon detectors

    SciTech Connect (OSTI)

    Shukla, R. A.; Dugad, S. R. Gopal, A. V.; Gupta, S. K.; Prabhu, S. S.; Garde, C. S.

    2014-02-15

    The emergence of high position resolution (?10 ?m) silicon detectors in recent times have highlighted the urgent need for the development of new automated optical scanners of micron level resolution suited for characterizing microscopic features of these detectors. More specifically, for the newly developed silicon photo-multipliers (SiPM) that are compact, possessing excellent photon detection efficiency with gain comparable to photo-multiplier tube. In a short time, since their invention the SiPMs are already being widely used in several high-energy physics and astrophysics experiments as the photon readout element. The SiPM is a high quantum efficiency, multi-pixel photon counting detector with fast timing and high gain. The presence of a wide variety of photo sensitive silicon detectors with high spatial resolution requires their performance evaluation to be carried out by photon beams of very compact spot size. We have designed a high resolution optical scanner that provides a monochromatic focused beam on a target plane. The transverse size of the beam was measured by the knife-edge method to be 1.7 ?m at 1 ? ? level. Since the beam size was an order of magnitude smaller than the typical feature size of silicon detectors, this optical scanner can be used for selective excitation of these detectors. The design and operational details of the optical scanner, high precision programmed movement of target plane (0.1 ?m) integrated with general purpose data acquisition system developed for recording static and transient response photo sensitive silicon detector are reported in this paper. Entire functionality of scanner is validated by using it for selective excitation of individual pixels in a SiPM and identifying response of active and dead regions within SiPM. Results from these studies are presented in this paper.

  1. LES Modeling of High Resolution Satellite Cloud Spatial and Thermal

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

    Structure at ARM-SGP site: How well can we Simulate Clouds from Space? LES Modeling of High Resolution Satellite Cloud Spatial and Thermal Structure at ARM-SGP site: How well can we Simulate Clouds from Space? Dubey, Manvendra DOE/Los Alamos National Laboratory Chylek, Petr DOE/Los Alamos National Laboratory Reisner, Jon Los Alamos National Laboratory Porch, William Los Alamos National Laboratory Category: Cloud Properties We report high fidelity observations of the spatial and thermal

  2. Methodology for Clustering High-Resolution Spatiotemporal Solar Resource Data

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

    Methodology for Clustering High-Resolution Spatiotemporal Solar Resource Data Dan Getman, Anthony Lopez, Trieu Mai, and Mark Dyson National Renewable Energy Laboratory Technical Report NREL/TP-6A20-63148 September 2015 NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency & Renewable Energy Operated by the Alliance for Sustainable Energy, LLC This report is available at no cost from the National Renewable Energy Laboratory (NREL) at

  3. Methodology for Clustering High-Resolution Spatiotemporal Solar Resource Data

    SciTech Connect (OSTI)

    Getman, Dan; Lopez, Anthony; Mai, Trieu; Dyson, Mark

    2015-09-01

    In this report, we introduce a methodology to achieve multiple levels of spatial resolution reduction of solar resource data, with minimal impact on data variability, for use in energy systems modeling. The selection of an appropriate clustering algorithm, parameter selection including cluster size, methods of temporal data segmentation, and methods of cluster evaluation are explored in the context of a repeatable process. In describing this process, we illustrate the steps in creating a reduced resolution, but still viable, dataset to support energy systems modeling, e.g. capacity expansion or production cost modeling. This process is demonstrated through the use of a solar resource dataset; however, the methods are applicable to other resource data represented through spatiotemporal grids, including wind data. In addition to energy modeling, the techniques demonstrated in this paper can be used in a novel top-down approach to assess renewable resources within many other contexts that leverage variability in resource data but require reduction in spatial resolution to accommodate modeling or computing constraints.

  4. Towards Ultra-High Resolution Models of Climate and Weather

    SciTech Connect (OSTI)

    Wehner, Michael; Oliker, Leonid; Shalf, John

    2007-01-01

    We present a speculative extrapolation of the performance aspects of an atmospheric general circulation model to ultra-high resolution and describe alternative technological paths to realize integration of such a model in the relatively near future. Due to a superlinear scaling of the computational burden dictated by stability criterion, the solution of the equations of motion dominate the calculation at ultra-high resolutions. From this extrapolation, it is estimated that a credible kilometer scale atmospheric model would require at least a sustained ten petaflop computer to provide scientifically useful climate simulations. Our design study portends an alternate strategy for practical power-efficient implementations of petaflop scale systems. Embedded processor technology could be exploited to tailor a custom machine designed to ultra-high climate model specifications at relatively affordable cost and power considerations. The major conceptual changes required by a kilometer scale climate model are certain to be difficult to implement. Although the hardware, software, and algorithms are all equally critical in conducting ultra-high climate resolution studies, it is likely that the necessary petaflop computing technology will be available in advance of a credible kilometer scale climate model.

  5. Resolution of a High Performance Cavity Beam Positron Monitor System

    SciTech Connect (OSTI)

    Walston, S.; Chung, C.; Fitsos, P.; Gronberg, J.; Ross, M.; Khainovski, O.; Kolomensky, Y.; Loscutoff, P.; Slater, M.; Thomson, M.; Ward, D.; Boogert, S.; Vogel, V.; Meller, R.; Lyapin, A.; Malton, S.; Miller, D.; Frisch, J.; Hinton, S.; May, J.; McCormick, D.; /SLAC /Caltech /KEK, Tsukuba

    2007-07-06

    International Linear Collider (ILC) interaction region beam sizes and component position stability requirements will be as small as a few nanometers. It is important to the ILC design effort to demonstrate that these tolerances can be achieved--ideally using beam-based stability measurements. It has been estimated that RF cavity beam position monitors (BPMs) could provide position measurement resolutions of less than one nanometer and could form the basis of the desired beam-based stability measurement. We have developed a high resolution RF cavity BPM system. A triplet of these BPMs has been installed in the extraction line of the KEK Accelerator Test Facility (ATF) for testing with its ultra-low emittance beam. A metrology system for the three BPMs was recently installed. This system employed optical encoders to measure each BPM's position and orientation relative to a zero-coefficient of thermal expansion carbon fiber frame and has demonstrated that the three BPMs behave as a rigid-body to less than 5 nm. To date, we have demonstrated a BPM resolution of less than 20 nm over a dynamic range of +/- 20 microns.

  6. Resolution of a High Performance Cavity Beam Position Monitor System

    SciTech Connect (OSTI)

    Walston, S; Chung, C; Fitsos, P; Gronberg, J; Ross, M; Khainovski, O; Kolomensky, Y; Loscutoff, P; Slater, M; Thomson, M; Ward, D; Boogert, S; Vogel, V; Meller, R; Lyapin, A; Malton, S; Miller, D; Frisch, J; Hinton, S; May, J; McCormick, D; Smith, S; Smith, T; White, G; Orimoto, T; Hayano, H; Honda, Y; Terunuma, N; Urakawa, J

    2005-09-12

    International Linear Collider (ILC) interaction region beam sizes and component position stability requirements will be as small as a few nanometers. It is important to the ILC design effort to demonstrate that these tolerances can be achieved - ideally using beam-based stability measurements. It has been estimated that RF cavity beam position monitors (BPMs) could provide position measurement resolutions of less than one nanometer and could form the basis of the desired beam-based stability measurement. We have developed a high resolution RF cavity BPM system. A triplet of these BPMs has been installed in the extraction line of the KEK Accelerator Test Facility (ATF) for testing with its ultra-low emittance beam. A metrology system for the three BPMs was recently installed. This system employed optical encoders to measure each BPM's position and orientation relative to a zero-coefficient of thermal expansion carbon fiber frame and has demonstrated that the three BPMs behave as a rigid-body to less than 5 nm. To date, we have demonstrated a BPM resolution of less than 20 nm over a dynamic range of +/- 20 microns.

  7. Wide band focusing x-ray spectrograph with spatial resolution

    SciTech Connect (OSTI)

    Pikuz, S. A.; Douglass, J. D.; Shelkovenko, T. A.; Sinars, D. B.; Hammer, D. A.

    2008-01-15

    A new, wide spectral bandwidth x-ray spectrograph, the wide-bandwidth focusing spectrograph with spatial resolution (WB-FSSR), based on spherically bent mica crystals, is described. The wide bandwidth is achieved by combining three crystals to form a large aperture dispersive element. Since the WB-FSSR covers a wide spectral band, it is very convenient for application as a routine diagnostic tool in experiments in which the desired spectral coverage is different from one test to the next. The WB-FSSR has been tested in imploding wire-array experiments on a 1 MA pulsed power machine, and x-ray spectra were recorded in the 1-20 A spectral band using different orders of mica crystal reflection. Using a two mirror-symmetrically placed WB-FSSR configuration, it was also possible to distinguish between a real spectral shift and a shift of recorded spectral lines caused by the spatial distribution of the radiating plasma. A spectral resolution of about 2000 was demonstrated and a spatial resolution of {approx}100 {mu}m was achieved in the spectral band of 5-10 A in second order of mica reflection. A simple method of numerical analysis of spectrograph capability is proposed.

  8. Designing arrays for modern high-resolution methods

    SciTech Connect (OSTI)

    Dowla, F.U.

    1987-10-01

    A bearing estimation study of seismic wavefields propagating from a strongly heterogeneous media shows that with the high-resolution MUSIC algorithm the bias of the direction estimate can be reduced by adopting a smaller aperture sub-array. Further, on this sub-array, the bias of the MUSIC algorithm is less than those of the MLM and Bartlett methods. On the full array, the performance for the three different methods are comparable. Improvement in bearing estimation in MUSIC with a reduced aperture might be attributed to increased signal coherency in the array. For methods with less resolution, the improved signal coherency in the smaller array is possible being offset by severe loss of resolution and the presence of weak secondary sources. Building upon the characteristics of real seismic wavefields, a design language has been developed to generate, modify, and test other arrays. Eigenstructures of wavefields and arrays have been studied empirically by simulation of a variety of realistic signals. 6 refs., 5 figs.

  9. High Resolution Atmospheric Modeling for Wind Energy Applications

    SciTech Connect (OSTI)

    Simpson, M; Bulaevskaya, V; Glascoe, L; Singer, M

    2010-03-18

    The ability of the WRF atmospheric model to forecast wind speed over the Nysted wind park was investigated as a function of time. It was found that in the time period we considered (August 1-19, 2008), the model is able to predict wind speeds reasonably accurately for 48 hours ahead, but that its forecast skill deteriorates rapidly after 48 hours. In addition, a preliminary analysis was carried out to investigate the impact of vertical grid resolution on the forecast skill. Our preliminary finding is that increasing vertical grid resolution does not have a significant impact on the forecast skill of the WRF model over Nysted wind park during the period we considered. Additional simulations during this period, as well as during other time periods, will be run in order to validate the results presented here. Wind speed is a difficult parameter to forecast due the interaction of large and small length scale forcing. To accurately forecast the wind speed at a given location, the model must correctly forecast the movement and strength of synoptic systems, as well as the local influence of topography / land use on the wind speed. For example, small deviations in the forecast track or strength of a large-scale low pressure system can result in significant forecast errors for local wind speeds. The purpose of this study is to provide a preliminary baseline of a high-resolution limited area model forecast performance against observations from the Nysted wind park. Validating the numerical weather prediction model performance for past forecasts will give a reasonable measure of expected forecast skill over the Nysted wind park. Also, since the Nysted Wind Park is over water and some distance from the influence of terrain, the impact of high vertical grid spacing for wind speed forecast skill will also be investigated.

  10. Local Optical Spectroscopies for Subnanometer Spatial Resolution Chemical Imaging

    SciTech Connect (OSTI)

    Weiss, Paul

    2014-01-20

    The evanescently coupled photon scanning tunneling microscopes (STMs) have special requirements in terms of stability and optical access. We have made substantial improvements to the stability, resolution, and noise floor of our custom-built visible-photon STM, and will translate these advances to our infrared instrument. Double vibration isolation of the STM base with a damping system achieved increased rigidity, giving high tunneling junction stability for long-duration and high-power illumination. Light frequency modulation with an optical chopper and phase-sensitive detection now enhance the signal-to-noise ratio of the tunneling junction during irradiation.

  11. Toroidal magnetic detector for high resolution measurement of muon momenta

    DOE Patents [OSTI]

    Bonanos, Peter (East Brunswick, NJ)

    1992-01-01

    A muon detector system including central and end air-core superconducting toroids and muon detectors enclosing a central calorimeter/detector. Muon detectors are positioned outside of toroids and all muon trajectory measurements are made in a nonmagnetic environment. Internal support for each magnet structure is provided by sheets, located at frequent and regularly spaced azimuthal planes, which interconnect the structural walls of the toroidal magnets. In a preferred embodiment, the shape of the toroidal magnet volume is adjusted to provide constant resolution over a wide range of rapidity.

  12. Ultrahigh resolution multicolor colocalization of single fluorescent probes

    DOE Patents [OSTI]

    Weiss, Shimon; Michalet, Xavier; Lacoste, Thilo D.

    2005-01-18

    A novel optical ruler based on ultrahigh-resolution colocalization of single fluorescent probes is described. Two unique families of fluorophores are used, namely energy-transfer fluorescent beads and semiconductor nanocrystal (NC) quantum dots, that can be excited by a single laser wavelength but emit at different wavelengths. A novel multicolor sample-scanning confocal microscope was constructed which allows one to image each fluorescent light emitter, free of chromatic aberrations, by scanning the sample with nanometer scale steps using a piezo-scanner. The resulting spots are accurately localized by fitting them to the known shape of the excitation point-spread-function of the microscope.

  13. Toroidal magnetic detector for high resolution measurement of muon momenta

    DOE Patents [OSTI]

    Bonanos, P.

    1992-01-07

    A muon detector system including central and end air-core superconducting toroids and muon detectors enclosing a central calorimeter/detector. Muon detectors are positioned outside of toroids and all muon trajectory measurements are made in a nonmagnetic environment. Internal support for each magnet structure is provided by sheets, located at frequent and regularly spaced azimuthal planes, which interconnect the structural walls of the toroidal magnets. In a preferred embodiment, the shape of the toroidal magnet volume is adjusted to provide constant resolution over a wide range of rapidity. 4 figs.

  14. Resolution-independent surface rendering using programmable graphics hardware

    DOE Patents [OSTI]

    Loop, Charles T.; Blinn, James Frederick

    2008-12-16

    Surfaces defined by a Bezier tetrahedron, and in particular quadric surfaces, are rendered on programmable graphics hardware. Pixels are rendered through triangular sides of the tetrahedra and locations on the shapes, as well as surface normals for lighting evaluations, are computed using pixel shader computations. Additionally, vertex shaders are used to aid interpolation over a small number of values as input to the pixel shaders. Through this, rendering of the surfaces is performed independently of viewing resolution, allowing for advanced level-of-detail management. By individually rendering tetrahedrally-defined surfaces which together form complex shapes, the complex shapes can be rendered in their entirety.

  15. Compact high resolution isobar separator for study of exotic decays

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

    Compact high resolution isobar separator for study of exotic decays A. Piechaczek 1 , V. Shchepunov 1 , H. K. Carter 1 J. C. Batchelder 1 , E. F. Zganjar 2 1 UNIRIB, Oak Ridge Associated Universities, Oak Ridge, TN 37830 2 Department of Physics & Astronomy, Louisiana State University, Baton Rouge, LA 70803 A compact isobar separator, based on the Multi-Pass-Time-of-Flight (MTOF) principle, is developed [1]. A mass resolving power (MRP) as spectrometer of 110,000 (FWHM) is achieved in

  16. Resonant Inelastic Scattering Spectra of Free Molecules with Vibrational Resolution

    SciTech Connect (OSTI)

    Hennies, Franz; Pietzsch, Annette; Berglund, Martin; Foehlisch, Alexander; Schmitt, Thorsten; Strocov, Vladimir; Karlsson, Hans O.; Andersson, Joakim; Rubensson, Jan-Erik

    2010-05-14

    Inelastic x-ray scattering spectra excited at the 1s{sup -1{pi}}* resonance of gas phase O{sub 2} have been recorded with an overall energy resolution that allows for well-resolved vibrational progressions. The nuclear wave packet dynamics in the intermediate state is reflected in vibrational excitations of the electronic ground state, and by fine-tuning the excitation energy the dissociation dynamics in the predissociative B{sup '} {sup 3{Pi}}{sub g} final state is controlled.

  17. 7 Resolution in Protein 2-Dimentional-Crystal X-Ray Diffraction...

    Office of Scientific and Technical Information (OSTI)

    Journal Article: 7 Resolution in Protein 2-Dimentional-Crystal X-Ray Diffraction at Linac Coherent Light Source Citation Details In-Document Search Title: 7 Resolution in...

  18. Structure of the Complete 70S Ribosome at 3.7 Resolution

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

    in 2005, using ALS data, for two different conformations of vacant Escherichia coli 70S ribosomes at 3.5 resolution. Comparison of the 3.7 resolution structure of...

  19. A Versatile High-Resolution X-Ray Imager (HRXI) for Laser-Plasma...

    Office of Scientific and Technical Information (OSTI)

    A high-resolution x-ray imager (HRXI) devoted to laser-plasma experiments combines two state-of-the-art technologies developed in France: a high-resolution x-ray microscope and a ...

  20. A high-resolution imaging X-ray crystal spectrometer for high...

    Office of Scientific and Technical Information (OSTI)

    Journal Article: A high-resolution imaging X-ray crystal spectrometer for high energy density (HED) plasmas Citation Details In-Document Search Title: A high-resolution imaging...

  1. Patent: High resolution x-ray and gamma ray imaging using diffraction...

    Office of Scientific and Technical Information (OSTI)

    High resolution x-ray and gamma ray imaging using diffraction lenses with mechanically bent crystals Citation Details Title: High resolution x-ray and gamma ray imaging using...

  2. High resolution spectroscopic study of BeΛ10

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

    Gogami, T.; Chen, C.; Kawama, D.; Achenbach, P.; Ahmidouch, A.; Albayrak, I.; Androic, D.; Asaturyan, A.; Asaturyan, R.; Ates, O.; et al

    2016-03-10

    Spectroscopy of amore » $$^{10}_{\\Lambda}$$Be hypernucleus was carried out at JLab Hall C using the $$(e,e^{\\prime}K^{+})$$ reaction. A new magnetic spectrometer system (SPL+HES+HKS), specifically designed for high resolution hypernuclear spectroscopy, was used to obtain an energy spectrum with a resolution of 0.78 MeV (FWHM). The well-calibrated spectrometer system of the present experiment using the $$p(e,e^{\\prime}K^{+})\\Lambda,\\Sigma^{0}$$ reactions allowed us to determine the energy levels, and the binding energy of the ground state peak (mixture of 1$$^{-}$$ and 2$$^{-}$$ states) was obtained to be B$$_{\\Lambda}$$=8.55$$\\pm$$0.07(stat.)$$\\pm$$0.11(sys.) MeV. Furthermore, the result indicates that the ground state energy is shallower than that of an emulsion study by about 0.5 MeV which provides valuable experimental information on charge symmetry breaking effect in the $$\\Lambda N$$ interaction.« less

  3. Solid-immersion fluorescence microscopy with increased emission and super resolution

    SciTech Connect (OSTI)

    Liau, Z. L.; Porter, J. M.; Liau, A. A.; Chen, J. J.; Salmon, W. C.; Sheu, S. S.

    2015-01-07

    We investigate solid-immersion fluorescence microscopy suitable for super-resolution nanotechnology and biological imaging, and have observed limit of resolution as small as 15?nm with microspheres, mitochondria, and chromatin fibers. We have further observed that fluorescence efficiency increases with excitation power density, implicating appreciable stimulated emission and increased resolution. We discuss potential advantages of the solid-immersion microscopy, including combined use with previously established super-resolution techniques for reaching deeper beyond the conventional diffraction limit.

  4. Final report: high resolution lensless 3D imaging of nanostructures with coherent x-rays

    SciTech Connect (OSTI)

    Jacobsen, Chris

    2014-12-07

    Final report on the project "High resolution lensless 3D imaging of nanostructures with coherent x-rays"

  5. HIGH-RESOLUTION ATMOSPHERIC ENSEMBLE MODELING AT SRNL

    SciTech Connect (OSTI)

    Buckley, R.; Werth, D.; Chiswell, S.; Etherton, B.

    2011-05-10

    The High-Resolution Mid-Atlantic Forecasting Ensemble (HME) is a federated effort to improve operational forecasts related to precipitation, convection and boundary layer evolution, and fire weather utilizing data and computing resources from a diverse group of cooperating institutions in order to create a mesoscale ensemble from independent members. Collaborating organizations involved in the project include universities, National Weather Service offices, and national laboratories, including the Savannah River National Laboratory (SRNL). The ensemble system is produced from an overlapping numerical weather prediction model domain and parameter subsets provided by each contributing member. The coordination, synthesis, and dissemination of the ensemble information are performed by the Renaissance Computing Institute (RENCI) at the University of North Carolina-Chapel Hill. This paper discusses background related to the HME effort, SRNL participation, and example results available from the RENCI website.

  6. High resolution, high rate x-ray spectrometer

    DOE Patents [OSTI]

    Goulding, F.S.; Landis, D.A.

    1983-07-14

    It is an object of the invention to provide a pulse processing system for use with detected signals of a wide dynamic range which is capable of very high counting rates, with high throughput, with excellent energy resolution and a high signal-to-noise ratio. It is a further object to provide a pulse processing system wherein the fast channel resolving time is quite short and substantially independent of the energy of the detected signals. Another object is to provide a pulse processing system having a pile-up rejector circuit which will allow the maximum number of non-interfering pulses to be passed to the output. It is also an object of the invention to provide new methods for generating substantially symmetrically triangular pulses for use in both the main and fast channels of a pulse processing system.

  7. Compact and mobile high resolution PET brain imager

    DOE Patents [OSTI]

    Majewski, Stanislaw; Proffitt, James

    2011-02-08

    A brain imager includes a compact ring-like static PET imager mounted in a helmet-like structure. When attached to a patient's head, the helmet-like brain imager maintains the relative head-to-imager geometry fixed through the whole imaging procedure. The brain imaging helmet contains radiation sensors and minimal front-end electronics. A flexible mechanical suspension/harness system supports the weight of the helmet thereby allowing for patient to have limited movements of the head during imaging scans. The compact ring-like PET imager enables very high resolution imaging of neurological brain functions, cancer, and effects of trauma using a rather simple mobile scanner with limited space needs for use and storage.

  8. Precise measurement of the resolution in light microscopy using Fourier transform

    SciTech Connect (OSTI)

    Vainrub, Arnold

    2008-04-15

    The resolution power of light microscope has been accurately measured ({+-}5%) by Fourier transform of various object images and further evaluation of the highest spatial frequency in Fourier spectrum. Any unknown shape plane object with a shape feature's size smaller than the resolution to be measured was shown to provide a reliable resolution test. This simple method gives a direct measurement of the resolution power as defined by Abbe [Archiv. F. Mikroskopische Anat. 9, 413 (1873)]. The results have been justified by comparison to a standard resolution measurement by using calibrated periodic line patterns. Notably, the approach is applicable in super-resolution light microscopy (transmission, reflection, and fluorescence), where calibrated resolution targets do not occur. It was conveniently implemented by using a compact disk as a test object and free IMAGEJ imaging software.

  9. Device for high spatial resolution chemical analysis of a sample and method of high spatial resolution chemical analysis

    DOE Patents [OSTI]

    Van Berkel, Gary J.

    2015-10-06

    A system and method for analyzing a chemical composition of a specimen are described. The system can include at least one pin; a sampling device configured to contact a liquid with a specimen on the at least one pin to form a testing solution; and a stepper mechanism configured to move the at least one pin and the sampling device relative to one another. The system can also include an analytical instrument for determining a chemical composition of the specimen from the testing solution. In particular, the systems and methods described herein enable chemical analysis of specimens, such as tissue, to be evaluated in a manner that the spatial-resolution is limited by the size of the pins used to obtain tissue samples, not the size of the sampling device used to solubilize the samples coupled to the pins.

  10. Pyridine Nucleotide Complexes with Bacillus anthracis Coenzyme A-Disulfide Reductase: A Structural Analysis of Dual NAD(P)H Specificity

    SciTech Connect (OSTI)

    Wallen,J.; Paige, C.; Mallett, T.; Karplus, P.; Claiborne, A.

    2008-01-01

    We have recently reported that CoASH is the major low-molecular weight thiol in Bacillus anthracis, and we have now characterized the kinetic and redox properties of the B. anthracis coenzyme A-disulfide reductase (CoADR, BACoADR) and determined the crystal structure at 2.30 Angstroms resolution. While the Staphylococcus aureus and Borrelia burgdorferi CoADRs exhibit strong preferences for NADPH and NADH, respectively, B. anthracis CoADR can use either pyridine nucleotide equally well. Sequence elements within the respective NAD(P)H-binding motifs correctly reflect the preferences for S. aureus and Bo. burgdorferi CoADRs, but leave questions as to how BACoADR can interact with both pyridine nucleotides. The structures of the NADH and NADPH complexes at ca. 2.3 Angstroms resolution reveal that a loop consisting of residues Glu180-Thr187 becomes ordered and changes conformation on NAD(P)H binding. NADH and NADPH interact with nearly identical conformations of this loop; the latter interaction, however, involves a novel binding mode in which the 2'-phosphate of NADPH points out toward solvent. In addition, the NAD(P)H-reduced BACoADR structures provide the first view of the reduced form (Cys42-SH/CoASH) of the Cys42-SSCoA redox center. The Cys42-SH side chain adopts a new conformation in which the conserved Tyr367'-OH and Tyr425'-OH interact with the nascent thiol(ate) on the flavin si-face. Kinetic data with Y367F, Y425F, and Y367, 425F BACoADR mutants indicate that Tyr425' is the primary proton donor in catalysis, with Tyr367' functioning as a cryptic alternate donor in the absence of Tyr425'.

  11. Structure recognition from high resolution images of ceramic composites

    SciTech Connect (OSTI)

    Ushizima, Daniela; Perciano, Talita; Krishnan, Harinarayan; Loring, Burlen; Bale, Hrishikesh; Parkinson, Dilworth; Sethian, James

    2015-01-05

    Fibers provide exceptional strength-to-weight ratio capabilities when woven into ceramic composites, transforming them into materials with exceptional resistance to high temperature, and high strength combined with improved fracture toughness. Microcracks are inevitable when the material is under strain, which can be imaged using synchrotron X-ray computed micro-tomography (mu-CT) for assessment of material mechanical toughness variation. An important part of this analysis is to recognize fibrillar features. This paper presents algorithms for detecting and quantifying composite cracks and fiber breaks from high-resolution image stacks. First, we propose recognition algorithms to identify the different structures of the composite, including matrix cracks and fibers breaks. Second, we introduce our package F3D for fast filtering of large 3D imagery, implemented in OpenCL to take advantage of graphic cards. Results show that our algorithms automatically identify micro-damage and that the GPU-based implementation introduced here takes minutes, being 17x faster than similar tools on a typical image file.

  12. Atomic Resolution Imaging and Quantification of Chemical Functionality of Surfaces

    SciTech Connect (OSTI)

    Schwarz, Udo

    2014-12-10

    The work carried out from 2006-2014 under DoE support was targeted at developing new approaches to the atomic-scale characterization of surfaces that include species-selective imaging and an ability to quantify chemical surface interactions with site-specific accuracy. The newly established methods were subsequently applied to gain insight into the local chemical interactions that govern the catalytic properties of model catalysts of interest to DoE. The foundation of our work was the development of three-dimensional atomic force microscopy (3D-AFM), a new measurement mode that allows the mapping of the complete surface force and energy fields with picometer resolution in space (x, y, and z) and piconewton/millielectron volts in force/energy. From this experimental platform, we further expanded by adding the simultaneous recording of tunneling current (3D-AFM/STM) using chemically well-defined tips. Through comparison with simulations, we were able to achieve precise quantification and assignment of local chemical interactions to exact positions within the lattice. During the course of the project, the novel techniques were applied to surface-oxidized copper, titanium dioxide, and silicon oxide. On these materials, defect-induced changes to the chemical surface reactivity and electronic charge density were characterized with site-specific accuracy.

  13. Small UAV-Acquired, High-resolution, Georeferenced Still Imagery

    SciTech Connect (OSTI)

    Ryan Hruska

    2005-09-01

    Currently, small Unmanned Aerial Vehicles (UAVs) are primarily used for capturing and down-linking real-time video. To date, their role as a low-cost airborne platform for capturing high-resolution, georeferenced still imagery has not been fully utilized. On-going work within the Unmanned Vehicle Systems Program at the Idaho National Laboratory (INL) is attempting to exploit this small UAV-acquired, still imagery potential. Initially, a UAV-based still imagery work flow model was developed that includes initial UAV mission planning, sensor selection, UAV/sensor integration, and imagery collection, processing, and analysis. Components to support each stage of the work flow are also being developed. Critical to use of acquired still imagery is the ability to detect changes between images of the same area over time. To enhance the analysts change detection ability, a UAV-specific, GIS-based change detection system called SADI or System for Analyzing Differences in Imagery is under development. This paper will discuss the associated challenges and approaches to collecting still imagery with small UAVs. Additionally, specific components of the developed work flow system will be described and graphically illustrated using varied examples of small UAV-acquired still imagery.

  14. Experiences with the High Energy Resolution Optics (HERO) update on a

    Office of Scientific and Technical Information (OSTI)

    physical electronics 690 auger system. (Conference) | SciTech Connect Experiences with the High Energy Resolution Optics (HERO) update on a physical electronics 690 auger system. Citation Details In-Document Search Title: Experiences with the High Energy Resolution Optics (HERO) update on a physical electronics 690 auger system. We will present our experiences with the new High Energy Resolution Optics (HERO) upgrade on a Physical Electronics Auger 690 system. This upgrade allows the single

  15. D&D Toolbox Robotic Deployment of High Resolution Laser Imaging for

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

    Characterization | Department of Energy Robotic Deployment of High Resolution Laser Imaging for Characterization D&D Toolbox Robotic Deployment of High Resolution Laser Imaging for Characterization The characterization of complex and/or hazardous facilities for the purposes of planning D&D projects can be excessively time consuming and present unacceptable hazards for personnel who enter or access the facility. PDF icon D&D Toolbox Robotic Deployment of High Resolution Laser

  16. Design Parameters and Objectives of a High--Resolution X--ray...

    Office of Scientific and Technical Information (OSTI)

    and temporal resolutions of 1 cm and > 10 ms which are obtained by a tomographic inversion of the spectral data, using the stellarator equilibrium reconstruction codes,...

  17. Hurricanes in an Aquaplanet World: Implications of the Impacts of External Forcing and Model Horizontal Resolution

    SciTech Connect (OSTI)

    Li, Fuyu; Collins, William D.; Wehner, Michael F.; Leung, Lai-Yung R.

    2013-06-02

    High-resolution climate models have been shown to improve the statistics of tropical storms and hurricanes compared to low-resolution models. The impact of increasing horizontal resolution in the tropical storm simulation is investigated exclusively using a series of Atmospheric Global Climate Model (AGCM) runs with idealized aquaplanet steady-state boundary conditions and a fixed operational storm-tracking algorithm. The results show that increasing horizontal resolution helps to detect more hurricanes, simulate stronger extreme rainfall, and emulate better storm structures in the models. However, increasing model resolution does not necessarily produce stronger hurricanes in terms of maximum wind speed, minimum sea level pressure, and mean precipitation, as the increased number of storms simulated by high-resolution models is mainly associated with weaker storms. The spatial scale at which the analyses are conducted appears to have more important control on these meteorological statistics compared to horizontal resolution of the model grid. When the simulations are analyzed on common low-resolution grids, the statistics of the hurricanes, particularly the hurricane counts, show reduced sensitivity to the horizontal grid resolution and signs of scale invariant.

  18. OMB and CEQ Joint Memorandum on Environmental Collaboration and Conflict Resolution (CEQ, 2012)

    Broader source: Energy.gov [DOE]

    This Office of Management and Budget (OMB) and Council on Environmental Quality (CEQ) joint memorandum expands and builds on the November 28, 2005, Environmental Conflict Resolution (ECR)...

  19. Spatial resolution and the geologic interpretation of Martian morphology - implications for subsurface volatiles

    SciTech Connect (OSTI)

    Zimbelman, J.R.

    1987-08-01

    Viking Orbiter images of the Acheron Fossae on Mars are presented and analyzed, with an emphasis on the impact of image resolution on the interpretation. High-resolution (less than 10 m/pixel) images reveal small mounds which can be interpreted as aeolian dunes, but these features are not evident on images with resolution of 50 m/pixel or greater. Also reported are the results of a visual inspection of 527 usable high-resolution images: it is found that all of the morphological features identified can arise in the absence of subsurface volatiles. 21 references.

  20. A Versatile High-Resolution X-Ray Imager (HRXI) for Laser-Plasma

    Office of Scientific and Technical Information (OSTI)

    Experiments on OMEGA (Journal Article) | SciTech Connect A Versatile High-Resolution X-Ray Imager (HRXI) for Laser-Plasma Experiments on OMEGA Citation Details In-Document Search Title: A Versatile High-Resolution X-Ray Imager (HRXI) for Laser-Plasma Experiments on OMEGA A high-resolution x-ray imager (HRXI) devoted to laser-plasma experiments combines two state-of-the-art technologies developed in France: a high-resolution x-ray microscope and a high-speed x-ray streak camera. The resulting

  1. Start 2015 with an #EnergyResolution to Save Money and Energy All Year Long

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

    | Department of Energy Start 2015 with an #EnergyResolution to Save Money and Energy All Year Long Start 2015 with an #EnergyResolution to Save Money and Energy All Year Long January 19, 2015 - 9:52am Addthis Create an #EnergyResolution to share how you plan to save money and energy in the New Year. | Graphic courtesy of Joelynn Schroeder, National Renewable Energy Laboratory Create an #EnergyResolution to share how you plan to save money and energy in the New Year. | Graphic courtesy of

  2. Johann Spectrometer for High Resolution X-ray Spectroscopy

    SciTech Connect (OSTI)

    Machek, Pavel; Froeba, Michael; Welter, Edmund; Caliebe, Wolfgang; Brueggmann, Ulf; Draeger, Guenter

    2007-01-19

    A newly designed vacuum Johann spectrometer with a large focusing analyzer crystal for inelastic x-ray scattering and high resolution fluorescence spectroscopy has been installed at the DORIS III storage ring. Spherically bent crystals with a maximum diameter of 125 mm, and cylindrically bent crystals are employed as dispersive optical elements. Standard radius of curvature of the crystals is 1000 mm, however, the design of the mechanical components also facilitates measurements with smaller and larger bending radii. Up to four crystals are mounted on a revolving crystal changer which enables crystal changes without breaking the vacuum. The spectrometer works at fixed Bragg angle. It is preferably designed for the measurements in non-scanning mode with a broad beam spot, and offers a large flexibility to set the sample to the optimum position inside the Rowland circle. A deep depletion CCD camera is employed as a position sensitive detector to collect the energy-analyzed photons on the circumference of the Rowland circle. The vacuum in the spectrometer tank is typically 10-6 mbar. The sample chamber is separated from the tank either by 25 {mu}m thick Kapton windows, which allows samples to be measured under ambient conditions, or by two gate valves. The spectrometer is currently installed at wiggler beamline W1 whose working range is 4-10.5 keV with typical flux at the sample of 5x1010photons/s/mm2. The capabilities of the spectrometer are illustrated by resonant inelastic experiments on 3d transition metals and rare earth compounds, and by chemical shift measurements on chromium compounds.

  3. High throughput screening of ligand binding to macromolecules using high resolution powder diffraction

    DOE Patents [OSTI]

    Von Dreele, Robert B.; D'Amico, Kevin

    2006-10-31

    A process is provided for the high throughput screening of binding of ligands to macromolecules using high resolution powder diffraction data including producing a first sample slurry of a selected polycrystalline macromolecule material and a solvent, producing a second sample slurry of a selected polycrystalline macromolecule material, one or more ligands and the solvent, obtaining a high resolution powder diffraction pattern on each of said first sample slurry and the second sample slurry, and, comparing the high resolution powder diffraction pattern of the first sample slurry and the high resolution powder diffraction pattern of the second sample slurry whereby a difference in the high resolution powder diffraction patterns of the first sample slurry and the second sample slurry provides a positive indication for the formation of a complex between the selected polycrystalline macromolecule material and at least one of the one or more ligands.

  4. Radiation re-solution of fission gas in non-oxide nuclear fuel

    SciTech Connect (OSTI)

    Matthews, Christopher; Schwen, Daniel; Klein, Andrew C.

    2015-02-01

    Renewed interest in fast nuclear reactors is creating a need for better understanding of fission gas bubble behavior in non-oxide fuels to support very long fuel lifetimes. Collisions between fission fragments and their subsequent cascades can knock fission gas atoms out of bubbles and back into the fuel lattice. We showed that these collisions can be treated as using the so-called homogenous atom-by-atom re-solution theory and calculated using the Binary Collision Approximation code 3DOT. The calculations showed that there is a decrease in the re-solution parameter as bubble radius increases until about 50 nm, at which the re-solution parameter stays nearly constant. Furthermore, our model shows ion cascades created in the fuel result in many more implanted fission gas atoms than collisions directly with fission fragments. This calculated re-solution parameter can be used to find a re-solution rate for future bubble simulations.

  5. High-resolution ab initio three-dimensional x-ray diffraction microscopy

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

    Chapman, Henry N.; Barty, Anton; Marchesini, Stefano; Noy, Aleksandr; Hau-Riege, Stefan P.; Cui, Congwu; Howells, Malcolm R.; Rosen, Rachel; He, Haifeng; Spence, John C. H.; et al

    2006-01-01

    Coherent x-ray diffraction microscopy is a method of imaging nonperiodic isolated objects at resolutions limited, in principle, by only the wavelength and largest scattering angles recorded. We demonstrate x-ray diffraction imaging with high resolution in all three dimensions, as determined by a quantitative analysis of the reconstructed volume images. These images are retrieved from the three-dimensional diffraction data using no a priori knowledge about the shape or composition of the object, which has never before been demonstrated on a nonperiodic object. We also construct two-dimensional images of thick objects with greatly increased depth of focus (without loss of transverse spatialmore » resolution). These methods can be used to image biological and materials science samples at high resolution with x-ray undulator radiation and establishes the techniques to be used in atomic-resolution ultrafast imaging at x-ray free-electron laser sources.« less

  6. The effects of digital elevation model resolution on the calculation and predictions of topographic wetness indices.

    SciTech Connect (OSTI)

    Drover, Damion, Ryan

    2011-12-01

    One of the largest exports in the Southeast U.S. is forest products. Interest in biofuels using forest biomass has increased recently, leading to more research into better forest management BMPs. The USDA Forest Service, along with the Oak Ridge National Laboratory, University of Georgia and Oregon State University are researching the impacts of intensive forest management for biofuels on water quality and quantity at the Savannah River Site in South Carolina. Surface runoff of saturated areas, transporting excess nutrients and contaminants, is a potential water quality issue under investigation. Detailed maps of variable source areas and soil characteristics would therefore be helpful prior to treatment. The availability of remotely sensed and computed digital elevation models (DEMs) and spatial analysis tools make it easy to calculate terrain attributes. These terrain attributes can be used in models to predict saturated areas or other attributes in the landscape. With laser altimetry, an area can be flown to produce very high resolution data, and the resulting data can be resampled into any resolution of DEM desired. Additionally, there exist many maps that are in various resolutions of DEM, such as those acquired from the U.S. Geological Survey. Problems arise when using maps derived from different resolution DEMs. For example, saturated areas can be under or overestimated depending on the resolution used. The purpose of this study was to examine the effects of DEM resolution on the calculation of topographic wetness indices used to predict variable source areas of saturation, and to find the best resolutions to produce prediction maps of soil attributes like nitrogen, carbon, bulk density and soil texture for low-relief, humid-temperate forested hillslopes. Topographic wetness indices were calculated based on the derived terrain attributes, slope and specific catchment area, from five different DEM resolutions. The DEMs were resampled from LiDAR, which is a laser altimetry remote sensing method, obtained from the USDA Forest Service at Savannah River Site. The specific DEM resolutions were chosen because they are common grid cell sizes (10m, 30m, and 50m) used in mapping for management applications and in research. The finer resolutions (2m and 5m) were chosen for the purpose of determining how finer resolutions performed compared with coarser resolutions at predicting wetness and related soil attributes. The wetness indices were compared across DEMs and with each other in terms of quantile and distribution differences, then in terms of how well they each correlated with measured soil attributes. Spatial and non-spatial analyses were performed, and predictions using regression and geostatistics were examined for efficacy relative to each DEM resolution. Trends in the raw data and analysis results were also revealed.

  7. STAR FORMATION AND FEEDBACK IN SMOOTHED PARTICLE HYDRODYNAMIC SIMULATIONS. II. RESOLUTION EFFECTS

    SciTech Connect (OSTI)

    Christensen, Charlotte R.; Quinn, Thomas; Bellovary, Jillian [Department of Astronomy, University of Washington, Box 351580, Seattle WA 98195 (United States); Stinson, Gregory [Jeremiah Horrocks Institute, University of Central Lancashire, Preston, PR1 2HE (United Kingdom); Wadsley, James, E-mail: christensen@astro.washington.ed [Department of Physics and Astronomy, ABB-241, McMaster University, 1280 Main St. W, Hamilton, ON, L8S 4M1 (Canada)

    2010-07-01

    We examine the effect of mass and force resolution on a specific star formation (SF) recipe using a set of N-body/smooth particle hydrodynamic simulations of isolated galaxies. Our simulations span halo masses from 10{sup 9} to 10{sup 13} M{sub sun}, more than 4 orders of magnitude in mass resolution, and 2 orders of magnitude in the gravitational softening length, {epsilon}, representing the force resolution. We examine the total global SF rate, the SF history, and the quantity of stellar feedback and compare the disk structure of the galaxies. Based on our analysis, we recommend using at least 10{sup 4} particles each for the dark matter (DM) and gas component and a force resolution of {epsilon} {approx} 10{sup -3} R{sub vir} when studying global SF and feedback. When the spatial distribution of stars is important, the number of gas and DM particles must be increased to at least 10{sup 5} of each. Low-mass resolution simulations with fixed softening lengths show particularly weak stellar disks due to two-body heating. While decreasing spatial resolution in low-mass resolution simulations limits two-body effects, density and potential gradients cannot be sustained. Regardless of the softening, low-mass resolution simulations contain fewer high density regions where SF may occur. Galaxies of approximately 10{sup 10} M{sub sun} display unique sensitivity to both mass and force resolution. This mass of galaxy has a shallow potential and is on the verge of forming a disk. The combination of these factors gives this galaxy the potential for strong gas outflows driven by supernova feedback and makes it particularly sensitive to any changes to the simulation parameters.

  8. Solving the Unsovlable: The Nanostructure of Gold at 1.1 Å Resolution

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

    Solving the Unsovlable: The Nanostructure of Gold at 1.1 Å Resolution Solving the Unsovlable: The Nanostructure of Gold at 1.1 Å Resolution Print Wednesday, 28 May 2008 00:00 For the first time, a team of scientists led by Roger Kornberg has synthesized thiol-covered gold nanoparticles and, using ALS Beamlines 5.0.2 and 8.2.2 and SSRL Beamlines 11-1 and 11-3, conclusively ascertained their atomic structure (at 1.1 Å resolution). The gold-thiol nanoparticle consists of 102 gold atoms

  9. New Zone Plate for Soft X-Ray Microscopy at 15-nm Spatial Resolution

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

    New Zone Plate for Soft X-Ray Microscopy at 15-nm Spatial Resolution New Zone Plate for Soft X-Ray Microscopy at 15-nm Spatial Resolution Print Wednesday, 31 August 2005 00:00 Analytical tools that combine spatial resolution with elemental and chemical identification at the nanometer scale along with large penetration depth are indispensable for the life and physical sciences. The XM-1 soft x-ray microscope at the ALS produces images that not only reveal structures but can identify their

  10. Objectives and layout of a high-resolution x-ray imaging crystal

    Office of Scientific and Technical Information (OSTI)

    spectrometer for the large helical device (Journal Article) | SciTech Connect Objectives and layout of a high-resolution x-ray imaging crystal spectrometer for the large helical device Citation Details In-Document Search Title: Objectives and layout of a high-resolution x-ray imaging crystal spectrometer for the large helical device A high-resolution x-ray imaging crystal spectrometer, whose concept was tested on NSTX and Alcator C-Mod, is being designed for the large helical device (LHD).

  11. Towards a Fine-Resolution Global Coupled Climate System for Prediction on

    Office of Scientific and Technical Information (OSTI)

    Decadal/Centennial Scales (Technical Report) | SciTech Connect Towards a Fine-Resolution Global Coupled Climate System for Prediction on Decadal/Centennial Scales Citation Details In-Document Search Title: Towards a Fine-Resolution Global Coupled Climate System for Prediction on Decadal/Centennial Scales The over-arching goal of this project was to contribute to the realization of a fully coupled fine resolution Earth System Model simulation in which a weather-scale atmosphere is coupled to

  12. A Prototype Two-Decade Fully-Coupled Fine-Resolution CCSM Simulation

    Office of Scientific and Technical Information (OSTI)

    (Journal Article) | SciTech Connect Journal Article: A Prototype Two-Decade Fully-Coupled Fine-Resolution CCSM Simulation Citation Details In-Document Search Title: A Prototype Two-Decade Fully-Coupled Fine-Resolution CCSM Simulation A fully coupled global simulation using the Community Climate System Model (CCSM) was configured using grid resolutions of 0.1{sup o} for the ocean and sea-ice, and 0.25{sup o} for the atmosphere and land, and was run under present-day greenhouse gas conditions

  13. High-resolution retinal imaging using adaptive optics and Fourier-domain optical coherence tomography

    DOE Patents [OSTI]

    Olivier, Scot S.; Werner, John S.; Zawadzki, Robert J.; Laut, Sophie P.; Jones, Steven M.

    2010-09-07

    This invention permits retinal images to be acquired at high speed and with unprecedented resolution in three dimensions (4.times.4.times.6 .mu.m). The instrument achieves high lateral resolution by using adaptive optics to correct optical aberrations of the human eye in real time. High axial resolution and high speed are made possible by the use of Fourier-domain optical coherence tomography. Using this system, we have demonstrated the ability to image microscopic blood vessels and the cone photoreceptor mosaic.

  14. Structure of XC6422 from Xanthomonas campestris at 1.6 Å resolution: a

    Office of Scientific and Technical Information (OSTI)

    small serine α/β-hydrolase (Journal Article) | SciTech Connect Structure of XC6422 from Xanthomonas campestris at 1.6 Å resolution: a small serine α/β-hydrolase Citation Details In-Document Search Title: Structure of XC6422 from Xanthomonas campestris at 1.6 Å resolution: a small serine α/β-hydrolase The crystal structure of a conserved hypothetical protein from X. campestris has been determined to a resolution of 1.6 Å. The determined X. campestris structure shows that it belongs

  15. xMDFF: molecular dynamics flexible fitting of low-resolution X-ray

    Office of Scientific and Technical Information (OSTI)

    structures (Journal Article) | SciTech Connect xMDFF: molecular dynamics flexible fitting of low-resolution X-ray structures Citation Details In-Document Search Title: xMDFF: molecular dynamics flexible fitting of low-resolution X-ray structures A new real-space refinement method for low-resolution X-ray crystallography is presented. The method is based on the molecular dynamics flexible fitting protocol targeted at addressing large-scale deformations of the search model to achieve

  16. Optic for an endoscope/borescope having high resolution and narrow field of view

    DOE Patents [OSTI]

    Stone, Gary F.; Trebes, James E.

    2003-10-28

    An optic having optimized high spatial resolution, minimal nonlinear magnification distortion while at the same time having a limited chromatic focal shift or chromatic aberrations. The optic located at the distal end of an endoscopic inspection tool permits a high resolution, narrow field of view image for medical diagnostic applications, compared to conventional optics for endoscopic instruments which provide a wide field of view, low resolution image. The image coverage is over a narrow (<20 degrees) field of view with very low optical distortion (<5% pin cushion or barrel distortion. The optic is also optimized for best color correction as well as to aid medical diagnostics.

  17. Phonon spectroscopy with sub-meV resolution by femtosecond x...

    Office of Scientific and Technical Information (OSTI)

    Phonon spectroscopy with sub-meV resolution by femtosecond x-ray diffuse scattering Citation Details In-Document Search This content will become publicly available on August 9,...

  18. Design Parameters and Objectives of a High--Resolution X--ray...

    Office of Scientific and Technical Information (OSTI)

    Design Parameters and Objectives of a High--Resolution X--ray Imaging Crystal Spectrometer for the Large Helical Device (LHD) Citation Details In-Document Search Title: Design...

  19. A versatile high-resolution x-ray imager (HRXI) for laser-plasma...

    Office of Scientific and Technical Information (OSTI)

    x-ray imager (HRXI) devoted to laser-plasma experiments combines two state-of-the-art technologies developed in France: a high-resolution x-ray microscope and a high-speed...

  20. Data Driven Approach for High Resolution Population Distribution and Dynamics Models

    SciTech Connect (OSTI)

    Bhaduri, Budhendra L; Bright, Eddie A; Rose, Amy N; Liu, Cheng; Urban, Marie L; Stewart, Robert N

    2014-01-01

    High resolution population distribution data are vital for successfully addressing critical issues ranging from energy and socio-environmental research to public health to human security. Commonly available population data from Census is constrained both in space and time and does not capture population dynamics as functions of space and time. This imposes a significant limitation on the fidelity of event-based simulation models with sensitive space-time resolution. This paper describes ongoing development of high-resolution population distribution and dynamics models, at Oak Ridge National Laboratory, through spatial data integration and modeling with behavioral or activity-based mobility datasets for representing temporal dynamics of population. The model is resolved at 1 km resolution globally and describes the U.S. population for nighttime and daytime at 90m. Integration of such population data provides the opportunity to develop simulations and applications in critical infrastructure management from local to global scales.

  1. Solving the Unsovlable: The Nanostructure of Gold at 1.1 Resolution

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

    Solving the Unsovlable: The Nanostructure of Gold at 1.1 Resolution Print For the first time, a team of scientists led by Roger Kornberg has synthesized thiol-covered gold...

  2. Development of fine-resolution analyses and expanded large-scale...

    Office of Scientific and Technical Information (OSTI)

    I: Methodology and evaluation Citation Details In-Document Search Title: Development of ... within the Weather Research and Forecasting model at a cloud-resolving resolution of 2 km. ...

  3. Objectives and Layout of a High-Resolution X-ray Imaging Crystal...

    Office of Scientific and Technical Information (OSTI)

    Technical Report: Objectives and Layout of a High-Resolution X-ray Imaging Crystal Spectrometer for the Large Helical Device (LHD) Citation Details In-Document Search Title:...

  4. Start 2015 with an #EnergyResolution to Save Money and Energy...

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

    You may have already resolved to go to the gym or eat heathier, and that's great, but I challenge you to also create an EnergyResolution that will save money while saving energy ...

  5. Start 2015 with an #EnergyResolution to Save Money and Energy...

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

    and that's great, but I challenge you to also create an EnergyResolution that will save money while saving energy all year long. The Energy Saver bloggers were up to the...

  6. Which Bulb Is Right for You? (Low-Resolution JPG Billboard) ...

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

    Low-resolution JPG of billboard reading, 'Which bulb is right for you? Save energy, save money. Energysaver.gov. Image icon DoEBillboardWhichBulbweb.jpg More Documents & ...

  7. Merging high resolution geophysical and geochemical surveys to reduce exploration risk at Glass Buttes, Oregon

    Broader source: Energy.gov [DOE]

    DOE Geothermal Technologies Peer Review - 2010. The primary objective of this project is to combine a suite of high resolution geophysical and geochemical techniques to reduce exploration risk by characterizing hydrothermal alteration, fault geometries and relationships.

  8. New Zone Plate for Soft X-Ray Microscopy at 15-nm Spatial Resolution

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

    New Zone Plate for Soft X-Ray Microscopy at 15-nm Spatial Resolution Print Analytical tools that combine spatial resolution with elemental and chemical identification at the nanometer scale along with large penetration depth are indispensable for the life and physical sciences. The XM-1 soft x-ray microscope at the ALS produces images that not only reveal structures but can identify their chemical elements and measure magnetic and other properties as well. Now a new method for creating optical

  9. New Zone Plate for Soft X-Ray Microscopy at 15-nm Spatial Resolution

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

    New Zone Plate for Soft X-Ray Microscopy at 15-nm Spatial Resolution Print Analytical tools that combine spatial resolution with elemental and chemical identification at the nanometer scale along with large penetration depth are indispensable for the life and physical sciences. The XM-1 soft x-ray microscope at the ALS produces images that not only reveal structures but can identify their chemical elements and measure magnetic and other properties as well. Now a new method for creating optical

  10. New Zone Plate for Soft X-Ray Microscopy at 15-nm Spatial Resolution

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

    New Zone Plate for Soft X-Ray Microscopy at 15-nm Spatial Resolution Print Analytical tools that combine spatial resolution with elemental and chemical identification at the nanometer scale along with large penetration depth are indispensable for the life and physical sciences. The XM-1 soft x-ray microscope at the ALS produces images that not only reveal structures but can identify their chemical elements and measure magnetic and other properties as well. Now a new method for creating optical

  11. Multi-resolution modeling of the dynamic loading of metal matrix

    Office of Scientific and Technical Information (OSTI)

    composites. (Conference) | SciTech Connect Multi-resolution modeling of the dynamic loading of metal matrix composites. Citation Details In-Document Search Title: Multi-resolution modeling of the dynamic loading of metal matrix composites. Abstract not provided. Authors: Dingreville, Remi Philippe Michel ; Voth, Thomas Eugene ; Robbins, Joshua Publication Date: 2013-10-01 OSTI Identifier: 1115648 Report Number(s): SAND2013-9199C 479945 DOE Contract Number: AC04-94AL85000 Resource Type:

  12. High-resolution crystal structure of human protease-activated receptor 1

    Office of Scientific and Technical Information (OSTI)

    (Journal Article) | SciTech Connect High-resolution crystal structure of human protease-activated receptor 1 Citation Details In-Document Search Title: High-resolution crystal structure of human protease-activated receptor 1 Authors: Zhang, Cheng ; Srinivasan, Yoga ; Arlow, Daniel H. ; Fung, Juan Jose ; Palmer, Daniel ; Zheng, Yaowu ; Green, Hillary F. ; Pandey, Anjali ; Dror, Ron O. ; Shaw, David E. ; Weis, William I. ; Coughlin, Shaun R. ; Kobilka, Brian K. [1] ; D.E. Shaw) [2] ;

  13. Layout And Results From The Initial Opeeration Of The High-resolution X-ray

    Office of Scientific and Technical Information (OSTI)

    Imaging Crystal Spectrometer On The Large Helical Device (Technical Report) | SciTech Connect SciTech Connect Search Results Technical Report: Layout And Results From The Initial Opeeration Of The High-resolution X-ray Imaging Crystal Spectrometer On The Large Helical Device Citation Details In-Document Search Title: Layout And Results From The Initial Opeeration Of The High-resolution X-ray Imaging Crystal Spectrometer On The Large Helical Device First results of ion and electron

  14. Detailed High-Resolution Three-Dimensional Simulations of OMEGA Separated

    Office of Scientific and Technical Information (OSTI)

    Reactants Inertial Confinement Fusion Experiments (Conference) | SciTech Connect Detailed High-Resolution Three-Dimensional Simulations of OMEGA Separated Reactants Inertial Confinement Fusion Experiments Citation Details In-Document Search Title: Detailed High-Resolution Three-Dimensional Simulations of OMEGA Separated Reactants Inertial Confinement Fusion Experiments Authors: Haines, Brian Michael [1] ; Grim, Gary P. [1] ; Fincke, James R. [1] ; Shah, Rahul C. [1] ; Forrest, Chad [2] ;

  15. Detailed High-Resolution Three-Dimensional Simulations of OMEGA Separated

    Office of Scientific and Technical Information (OSTI)

    Reactants Inertial Confinement Fusion Experiments (Conference) | SciTech Connect Detailed High-Resolution Three-Dimensional Simulations of OMEGA Separated Reactants Inertial Confinement Fusion Experiments Citation Details In-Document Search Title: Detailed High-Resolution Three-Dimensional Simulations of OMEGA Separated Reactants Inertial Confinement Fusion Experiments × You are accessing a document from the Department of Energy's (DOE) SciTech Connect. This site is a product of DOE's

  16. Development of fine-resolution analyses and expanded large-scale forcing

    Office of Scientific and Technical Information (OSTI)

    properties. Part I: Methodology and evaluation (Journal Article) | SciTech Connect I: Methodology and evaluation Citation Details In-Document Search Title: Development of fine-resolution analyses and expanded large-scale forcing properties. Part I: Methodology and evaluation We produce fine-resolution, three-dimensional fields of meteorological and other variables for the U.S. Department of Energy's Atmospheric Radiation Measurement (ARM) Southern Great Plains site. The Community Gridpoint

  17. Development of fine-resolution analyses and expanded large-scale forcing

    Office of Scientific and Technical Information (OSTI)

    properties. Part II: Scale-awareness and application to single-column model experiments (Journal Article) | SciTech Connect II: Scale-awareness and application to single-column model experiments Citation Details In-Document Search Title: Development of fine-resolution analyses and expanded large-scale forcing properties. Part II: Scale-awareness and application to single-column model experiments Fine-resolution three-dimensional fields have been produced using the Community Gridpoint

  18. A high-resolution imaging X-ray crystal spectrometer for intense laser

    Office of Scientific and Technical Information (OSTI)

    plasma interaction experiments (Conference) | SciTech Connect Conference: A high-resolution imaging X-ray crystal spectrometer for intense laser plasma interaction experiments Citation Details In-Document Search Title: A high-resolution imaging X-ray crystal spectrometer for intense laser plasma interaction experiments Authors: Chen, H ; Bitter, M ; Hazi, A ; Hill, K ; Kerr, S ; Magee, E ; Nagel, S ; Park, J ; Schneider, M ; Stone, G ; Williams, G ; Beiersdorfer, P Publication Date:

  19. New Zone Plate for Soft X-Ray Microscopy at 15-nm Spatial Resolution

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

    New Zone Plate for Soft X-Ray Microscopy at 15-nm Spatial Resolution Print Analytical tools that combine spatial resolution with elemental and chemical identification at the nanometer scale along with large penetration depth are indispensable for the life and physical sciences. The XM-1 soft x-ray microscope at the ALS produces images that not only reveal structures but can identify their chemical elements and measure magnetic and other properties as well. Now a new method for creating optical

  20. Exploring electronic structure through high-resolution hard x-ray

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

    spectroscopies | Stanford Synchrotron Radiation Lightsource Exploring electronic structure through high-resolution hard x-ray spectroscopies Tuesday, July 23, 2013 - 11:00am SLAC, Conference Room 137-322 Presented by Dimosthenis Sokaras, Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory Modern high brilliance beamlines coupled with recent advances in hard-x-ray optics are establishing high-resolution hard x-ray spectroscopies as a powerful analytical tool for

  1. Catalyst Cartography: 3D Super-Resolution Mapping of Catalytic Activity |

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

    The Ames Laboratory Catalyst Cartography: 3D Super-Resolution Mapping of Catalytic Activity Thanks to a groundbreaking new method, scientists have created the first 3D super-resolution maps of catalytic activity on an individual catalytic nanoparticle while reactions are occurring. Catalysts are used in manufacturing everything from stain remover to rocket fuel; they make production more efficient by facilitating chemical reactions. Each catalyst being studied is only about 200 nanometers in

  2. xMDFF: molecular dynamics flexible fitting of low-resolution X-ray structures

    SciTech Connect (OSTI)

    McGreevy, Ryan; Singharoy, Abhishek; Li, Qufei; Zhang, Jingfen; Xu, Dong; Perozo, Eduardo; Schulten, Klaus

    2014-09-01

    A new real-space refinement method for low-resolution X-ray crystallography is presented. The method is based on the molecular dynamics flexible fitting protocol targeted at addressing large-scale deformations of the search model to achieve refinement with minimal manual intervention. An explanation of the method is provided, augmented by results from the refinement of both synthetic and experimental low-resolution data, including an independent electrophysiological verification of the xMDFF-refined crystal structure of a voltage-sensor protein. X-ray crystallography remains the most dominant method for solving atomic structures. However, for relatively large systems, the availability of only medium-to-low-resolution diffraction data often limits the determination of all-atom details. A new molecular dynamics flexible fitting (MDFF)-based approach, xMDFF, for determining structures from such low-resolution crystallographic data is reported. xMDFF employs a real-space refinement scheme that flexibly fits atomic models into an iteratively updating electron-density map. It addresses significant large-scale deformations of the initial model to fit the low-resolution density, as tested with synthetic low-resolution maps of d-ribose-binding protein. xMDFF has been successfully applied to re-refine six low-resolution protein structures of varying sizes that had already been submitted to the Protein Data Bank. Finally, via systematic refinement of a series of data from 3.6 to 7 resolution, xMDFF refinements together with electrophysiology experiments were used to validate the first all-atom structure of the voltage-sensing protein Ci-VSP.

  3. Post-Delivery test report for light duty utility arm high resolution stereoscopic video system (HRSVS)

    SciTech Connect (OSTI)

    Pardini, A.F., Westinghouse Hanford

    1996-05-07

    This report documents the post delivery testing of the High Resolution Stereoscopic Video Camera System (HRSVS) LDUA system,designed for use by the Light Duty Utility Arm (LDUA) project.The post delivery test shows by demonstration that the high resolution stereoscopic video camera system is fully operational to perform the task of aligning the LDUA arm and mast with the entry riser during deployment operations within a Hanford Site waste tank.

  4. Signal-to-noise and resolution enhancement in ion mobility spectrometry

    Office of Scientific and Technical Information (OSTI)

    using correlation gating techniques : barker codes. (Journal Article) | SciTech Connect Journal Article: Signal-to-noise and resolution enhancement in ion mobility spectrometry using correlation gating techniques : barker codes. Citation Details In-Document Search Title: Signal-to-noise and resolution enhancement in ion mobility spectrometry using correlation gating techniques : barker codes. No abstract prepared. Authors: Rohde, Steven Barney ; Pfeifer, Kent Bryant Publication Date:

  5. Sub-Cell Resolution Techniques for Multi-Material Electromagnetics in Two

    Office of Scientific and Technical Information (OSTI)

    and Three Dimensions. (Conference) | SciTech Connect Sub-Cell Resolution Techniques for Multi-Material Electromagnetics in Two and Three Dimensions. Citation Details In-Document Search Title: Sub-Cell Resolution Techniques for Multi-Material Electromagnetics in Two and Three Dimensions. Abstract not provided. Authors: Siefert, Christopher ; Bochev, Pavel Blagoveston ; Kramer, Richard Michael Jack ; Voth, Thomas Eugene Publication Date: 2014-09-01 OSTI Identifier: 1241710 Report Number(s):

  6. The Department's Audit Resolution and Follow-up Process, IG-0766 |

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

    Department of Energy The Department's Audit Resolution and Follow-up Process, IG-0766 The Department's Audit Resolution and Follow-up Process, IG-0766 Over the years, the Office of Inspector General has issued findings and recoinmendations addressing numerous aspects of the Department of Energy's programs, operations and management hnctions. In many cases, the Department has concurred with the findings and reported that corrective actions to resolve problems or improve the efficiency of its

  7. High resolution PFPE-based molding High resolution PFPE-based molding High resolution PFPE-based molding techniques for nanofabrication of high pattern density sub-20 nm features: A fundamental materials approach

    SciTech Connect (OSTI)

    Williams, Stuart S [University of North Carolina, Chapel Hill; Samulski, Edward [University of North Carolina, Chapel Hill; Lopez, Renee [University of North Carolina, Chapel Hill; Ruiz, Ricardo [Hitachi; DeSimone, Joseph [University of North Carolina, Chapel Hill; Retterer, Scott T [ORNL

    2010-01-01

    ABSTRACT. Described herein is the development and investigation of PFPE-based elastomers for high resolution replica molding applications. The modulus of the elastomeric materials was increased through synthetic and additive approaches while maintaining relatively low surface energies (<25 mN/m). Using practically relevant large area master templates, we show that the resolution of the molds is strongly dependant upon the elastomeric mold modulus. A composite mold approach was used to form flexible molds out of stiff, high modulus materials that allow for replication of sub-20 nm post structures. Sub-100 nm line grating master templates, formed using e-beam lithography, were used to determine the experimental stability of the molding materials. It was observed that as the feature spacing decreased, high modulus composite molds were able to effectively replicate the nano-grating structures without cracking or tear-out defects that typically occur with high modulus elastomers.

  8. Calculation of the spatial resolution in two-photon absorption spectroscopy applied to plasma diagnosis

    SciTech Connect (OSTI)

    Garcia-Lechuga, M.; Fuentes, L. M.; Grtzmacher, K.; Prez, C. Rosa, M. I. de la

    2014-10-07

    We report a detailed characterization of the spatial resolution provided by two-photon absorption spectroscopy suited for plasma diagnosis via the 1S-2S transition of atomic hydrogen for optogalvanic detection and laser induced fluorescence (LIF). A precise knowledge of the spatial resolution is crucial for a correct interpretation of measurements, if the plasma parameters to be analysed undergo strong spatial variations. The present study is based on a novel approach which provides a reliable and realistic determination of the spatial resolution. Measured irradiance distribution of laser beam waists in the overlap volume, provided by a high resolution UV camera, are employed to resolve coupled rate equations accounting for two-photon excitation, fluorescence decay and ionization. The resulting three-dimensional yield distributions reveal in detail the spatial resolution for optogalvanic and LIF detection and related saturation due to depletion. Two-photon absorption profiles broader than the Fourier transform-limited laser bandwidth are also incorporated in the calculations. The approach allows an accurate analysis of the spatial resolution present in recent and future measurements.

  9. Document | Department of Energy

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

    Extracted Pages PDF icon Document More Documents & Publications ADR Policy Federal Register ADR Revised Policy Microsoft Word - ADR Revised Policy82508Reformatted.doc

  10. The effect of horizontal resolution on simulation quality in the Community Atmospheric Model, CAM5.1

    SciTech Connect (OSTI)

    Wehner, Michael F.; Reed, Kevin A.; Li, Fuyu; Prabhat, -; Bacmeister, Julio; Chen, Cheng -Ta; Paciorek, Christopher; Gleckler, Peter J.; Sperber, Kenneth R.; Collins, William D.; Gettelman, Andrew; Jablonowski, Christiane

    2014-11-05

    We present an analysis of version 5.1 of the Community Atmospheric Model (CAM5.1) at a high horizontal resolution. Intercomparison of this global model at approximately 0.25, 1, and 2 is presented for extreme daily precipitation as well as for a suite of seasonal mean fields. In general, extreme precipitation amounts are larger in high resolution than in lower-resolution configurations. In many but not all locations and/or seasons, extreme daily precipitation rates in the high-resolution configuration are higher and more realistic. The high-resolution configuration produces tropical cyclones up to category 5 on the Saffir-Simpson scale and a comparison to observations reveals both realistic and unrealistic model behavior. In the absence of extensive model tuning at high resolution, simulation of many of the mean fields analyzed in this study is degraded compared to the tuned lower-resolution public released version of the model.

  11. A High Resolution, Light-Weight, Synthetic Aperture Radar for UAV Application

    SciTech Connect (OSTI)

    Doerry, A.W.; Hensley, W.H.; Stence, J.; Tsunoda, S.I. Pace, F.; Walker, B,C.; Woodring, M.

    1999-05-27

    (U) Sandia National Laboratories in collaboration with General Atomics (GA) has designed and built a high resolution, light-weight, Ku-band Synthetic Aperture Radar (SAR) known as "Lynx". Although Lynx can be operated on a wide variety of manned and unmanned platforms, its design is optimized for use on medium altitude Unmanned Aerial Vehicles (UAVS). In particular, it can be operated on the Predator, I-GNAT, and Prowler II platforms manufactured by GA. (U) The radar production weight is less than 120 lb and operates within a 3 GHz band from 15.2 GHz to 18.2 GHz with a peak output power of 320 W. Operating range is resolution and mode dependent but can exceed 45 km in adverse weather (4 mm/hr rain). Lynx has operator selectable resolution and is capable of 0.1 m resolution in spotlight mode and 0.3 m resolution in stripmap mode, over substantial depression angles (5 to 60 deg) and squint angles (broadside 45 deg). Real-time Motion Compensation is implemented to allow high-quality image formation even during vehicle turns and other maneuvers.

  12. High-resolution Bent-crystal Spectrometer for the Ultra-soft X-ray Region

    DOE R&D Accomplishments [OSTI]

    Beiersdorfer, P.; von Goeler, S.; Bitter, M.; Hill, K. W.; Hulse, R. A.; Walling, R. S.

    1988-10-01

    A multichannel vacuum Brag-crystal spectrometer has been developed for high-resolution measurements of the line emission from tokamak plasmas in the wavelength region between 4 and 25 angstrom. The spectrometer employs a bent crystal in Johann geometry and a microchannel-plate intensified photodiode array. The instrument is capable of measuring high-resolution spectra (lambda/..delta..lambda approx. 3000) with fast time resolution (4 msec per spectrum) and good spatial resolution (3 cm). The spectral bandwidth is ..delta..lambda/lambda{sub 0} = 8 angstrom. A simple tilt mechanism allows access to different wavelength intervals. In order to illustrate the utility of the new spectrometer, time- and space-resolved measurements of the n = 3 to n = 2 spectrum of selenium from the Princeton Large Torus tokamak plasmas are presented. The data are used to determine the plasma transport parameters and to infer the radial distribution of fluorinelike, neonlike, and sodiumlike ions of selenium in the plasma. The new ultra-soft x-ray spectrometer has thus enabled us to demonstrate the utility of high-resolution L-shell spectroscopy of neonlike ions as a fusion diagnostic.

  13. Comparison between beamforming and super resolution imaging algorithms for non-destructive evaluation

    SciTech Connect (OSTI)

    Fan, Chengguang; Drinkwater, Bruce W.

    2014-02-18

    In this paper the performance of total focusing method is compared with the widely used time-reversal MUSIC super resolution technique. The algorithms are tested with simulated and experimental ultrasonic array data, each containing different noise levels. The simulated time domain signals allow the effects of array geometry, frequency, scatterer location, scatterer size, scatterer separation and random noise to be carefully controlled. The performance of the imaging algorithms is evaluated in terms of resolution and sensitivity to random noise. It is shown that for the low noise situation, time-reversal MUSIC provides enhanced lateral resolution when compared to the total focusing method. However, for higher noise levels, the total focusing method shows robustness, whilst the performance of time-reversal MUSIC is significantly degraded.

  14. A versatile medium-resolution x-ray emission spectrometer for diamond anvil cell applications

    SciTech Connect (OSTI)

    Mortensen, D. R.; Seidler, G. T.; Bradley, J. A.; Lipp, M. J.; Evans, W. J.; Chow, P.; Xiao, Y.-M.; Boman, G.; Bowden, M. E.

    2013-08-15

    We present design and performance details for a polycapillary-coupled x-ray spectrometer that provides very high collection efficiency at a moderate energy resolution suitable for many studies of nonresonant x-ray emission spectroscopy, especially for samples of heavy elements under high pressures. Using a single Bragg analyzer operating close to backscattering geometry so as to minimize the effect of the weak divergence of the quasicollimated exit beam from the polycapillary optic, this instrument can maintain a typical energy resolution of 5 eV over photon energies from 5 keV to 10 keV. We find dramatically improved count rates as compared to a traditional higher-resolution instrument based on a single spherically bent crystal analyzer.

  15. High-resolution x-ray diffraction microscopy of specifically labeled yeast cells

    SciTech Connect (OSTI)

    Nelson, Johanna; Huang, Xiaojing; Steinbrener, Jan; Shapiro, David; Kirz, Janos; Marchesini, Stephano; Neiman, Aaron M.; Turner, Joshua J.; Jacobsen, Chris

    2010-04-20

    X-ray diffraction microscopy complements other x-ray microscopy methods by being free of lens-imposed radiation dose and resolution limits, and it allows for high-resolution imaging of biological specimens too thick to be viewed by electron microscopy. We report here the highest resolution (11-13 nm) x-ray diffraction micrograph of biological specimens, and a demonstration of molecular-specific gold labeling at different depths within cells via through-focus propagation of the reconstructed wavefield. The lectin concanavalin A conjugated to colloidal gold particles was used to label the ?-mannan sugar in the cell wall of the yeast Saccharomyces cerevisiae. Cells were plunge-frozen in liquid ethane and freeze-dried, after which they were imaged whole using x-ray diffraction microscopy at 750 eV photon energy.

  16. High-resolution x-ray diffraction microscopy of specifically labeled yeast cells

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

    Nelson, Johanna; Huang, Xiaojing; Steinbrener, Jan; Shapiro, David; Kirz, Janos; Marchesini, Stephano; Neiman, Aaron M.; Turner, Joshua J.; Jacobsen, Chris

    2010-04-20

    X-ray diffraction microscopy complements other x-ray microscopy methods by being free of lens-imposed radiation dose and resolution limits, and it allows for high-resolution imaging of biological specimens too thick to be viewed by electron microscopy. We report here the highest resolution (11-13 nm) x-ray diffraction micrograph of biological specimens, and a demonstration of molecular-specific gold labeling at different depths within cells via through-focus propagation of the reconstructed wavefield. The lectin concanavalin A conjugated to colloidal gold particles was used to label the α-mannan sugar in the cell wall of the yeast Saccharomyces cerevisiae. Cells were plunge-frozen in liquid ethane andmore » freeze-dried, after which they were imaged whole using x-ray diffraction microscopy at 750 eV photon energy.« less

  17. Dedicated mobile high resolution prostate PET imager with an insertable transrectal probe

    DOE Patents [OSTI]

    Majewski, Stanislaw (Yorktown, VA); Proffitt, James (Newport News, VA)

    2010-12-28

    A dedicated mobile PET imaging system to image the prostate and surrounding organs. The imaging system includes an outside high resolution PET imager placed close to the patient's torso and an insertable and compact transrectal probe that is placed in close proximity to the prostate and operates in conjunction with the outside imager. The two detector systems are spatially co-registered to each other. The outside imager is mounted on an open rotating gantry to provide torso-wide 3D images of the prostate and surrounding tissue and organs. The insertable probe provides closer imaging, high sensitivity, and very high resolution predominately 2D view of the prostate and immediate surroundings. The probe is operated in conjunction with the outside imager and a fast data acquisition system to provide very high resolution reconstruction of the prostate and surrounding tissue and organs.

  18. Solving the Unsovlable: The Nanostructure of Gold at 1.1 Å Resolution

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

    Solving the Unsovlable: The Nanostructure of Gold at 1.1 Å Resolution Print For the first time, a team of scientists led by Roger Kornberg has synthesized thiol-covered gold nanoparticles and, using ALS Beamlines 5.0.2 and 8.2.2 and SSRL Beamlines 11-1 and 11-3, conclusively ascertained their atomic structure (at 1.1 Å resolution). The gold-thiol nanoparticle consists of 102 gold atoms surrounded by 44 molecules of a thiol compound (para-mercaptobenzoic acid, or p-MBA). The central gold atoms

  19. Solving the Unsovlable: The Nanostructure of Gold at 1.1 Å Resolution

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

    Solving the Unsovlable: The Nanostructure of Gold at 1.1 Å Resolution Print For the first time, a team of scientists led by Roger Kornberg has synthesized thiol-covered gold nanoparticles and, using ALS Beamlines 5.0.2 and 8.2.2 and SSRL Beamlines 11-1 and 11-3, conclusively ascertained their atomic structure (at 1.1 Å resolution). The gold-thiol nanoparticle consists of 102 gold atoms surrounded by 44 molecules of a thiol compound (para-mercaptobenzoic acid, or p-MBA). The central gold atoms

  20. Solving the Unsovlable: The Nanostructure of Gold at 1.1 Å Resolution

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

    Solving the Unsovlable: The Nanostructure of Gold at 1.1 Å Resolution Print For the first time, a team of scientists led by Roger Kornberg has synthesized thiol-covered gold nanoparticles and, using ALS Beamlines 5.0.2 and 8.2.2 and SSRL Beamlines 11-1 and 11-3, conclusively ascertained their atomic structure (at 1.1 Å resolution). The gold-thiol nanoparticle consists of 102 gold atoms surrounded by 44 molecules of a thiol compound (para-mercaptobenzoic acid, or p-MBA). The central gold atoms

  1. Solving the Unsovlable: The Nanostructure of Gold at 1.1 Å Resolution

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

    Solving the Unsovlable: The Nanostructure of Gold at 1.1 Å Resolution Print For the first time, a team of scientists led by Roger Kornberg has synthesized thiol-covered gold nanoparticles and, using ALS Beamlines 5.0.2 and 8.2.2 and SSRL Beamlines 11-1 and 11-3, conclusively ascertained their atomic structure (at 1.1 Å resolution). The gold-thiol nanoparticle consists of 102 gold atoms surrounded by 44 molecules of a thiol compound (para-mercaptobenzoic acid, or p-MBA). The central gold atoms

  2. Structure of the Complete 70S Ribosome at 3.7 Å Resolution

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

    Structure of the Complete 70S Ribosome at 3.7 Å Resolution Structure of the Complete 70S Ribosome at 3.7 Å Resolution Print Wednesday, 27 June 2007 00:00 Ribosomes are RNA-based protein factories found in all living cells, responsible for translating the genetic information encoded in messenger RNA (mRNA) into proteins. The first x-ray structures of the complete 70S ribosome were determined in 1999 at 7.8 Å and in 2001 at 5.5 Å, using diffraction data collected at ALS Beamline 5.0.2. These

  3. Solving the Unsovlable: The Nanostructure of Gold at 1.1 Å Resolution

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

    Solving the Unsovlable: The Nanostructure of Gold at 1.1 Å Resolution Print For the first time, a team of scientists led by Roger Kornberg has synthesized thiol-covered gold nanoparticles and, using ALS Beamlines 5.0.2 and 8.2.2 and SSRL Beamlines 11-1 and 11-3, conclusively ascertained their atomic structure (at 1.1 Å resolution). The gold-thiol nanoparticle consists of 102 gold atoms surrounded by 44 molecules of a thiol compound (para-mercaptobenzoic acid, or p-MBA). The central gold atoms

  4. Solving the Unsovlable: The Nanostructure of Gold at 1.1 Å Resolution

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

    Solving the Unsovlable: The Nanostructure of Gold at 1.1 Å Resolution Print For the first time, a team of scientists led by Roger Kornberg has synthesized thiol-covered gold nanoparticles and, using ALS Beamlines 5.0.2 and 8.2.2 and SSRL Beamlines 11-1 and 11-3, conclusively ascertained their atomic structure (at 1.1 Å resolution). The gold-thiol nanoparticle consists of 102 gold atoms surrounded by 44 molecules of a thiol compound (para-mercaptobenzoic acid, or p-MBA). The central gold atoms

  5. Atomic-resolution 3D structure of amyloid ? fibrils: The Osaka mutation

    SciTech Connect (OSTI)

    Schutz, Anne K.; Wall, Joseph; Vagt, Toni; Huber, Matthias; Ovchinnikova, Oxana Y.; Cadalbert, Riccardo; Guntert, Peter; Bockmann, Anja; Glockshuber, Rudi; Meier, Beat H.

    2014-11-13

    Despite its central importance for understanding the molecular basis of Alzheimer's disease (AD), high-resolution structural information on amyloid ?-peptide (A?) fibrils, which are intimately linked with AD, is scarce. We report an atomic-resolution fibril structure of the A? 1-40 peptide with the Osaka mutation (E22?), associated with early-onset AD. The structure, which differs substantially from all previously proposed models, is based on a large number of unambiguous intra- and intermolecular solid-state NMR distance restraints

  6. Security camera resolution measurements: Horizontal TV lines versus modulation transfer function measurements.

    SciTech Connect (OSTI)

    Birch, Gabriel Carisle; Griffin, John Clark

    2015-01-01

    The horizontal television lines (HTVL) metric has been the primary quantity used by division 6000 related to camera resolution for high consequence security systems. This document shows HTVL measurements are fundamen- tally insufficient as a metric to determine camera resolution, and propose a quantitative, standards based methodology by measuring the camera system modulation transfer function (MTF), the most common and accepted metric of res- olution in the optical science community. Because HTVL calculations are easily misinterpreted or poorly defined, we present several scenarios in which HTVL is frequently reported, and discuss their problems. The MTF metric is discussed, and scenarios are presented with calculations showing the application of such a metric.

  7. High resolution x-ray and gamma ray imaging using diffraction lenses with mechanically bent crystals

    SciTech Connect (OSTI)

    Smither, Robert K.

    2008-12-23

    A method for high spatial resolution imaging of a plurality of sources of x-ray and gamma-ray radiation is provided. High quality mechanically bent diffracting crystals of 0.1 mm radial width are used for focusing the radiation and directing the radiation to an array of detectors which is used for analyzing their addition to collect data as to the location of the source of radiation. A computer is used for converting the data to an image. The invention also provides for the use of a multi-component high resolution detector array and for narrow source and detector apertures.

  8. Layout and results from the initial operation of the high-resolution x-ray

    Office of Scientific and Technical Information (OSTI)

    imaging crystal spectrometer on the Large Helical Device (Journal Article) | SciTech Connect Layout and results from the initial operation of the high-resolution x-ray imaging crystal spectrometer on the Large Helical Device Citation Details In-Document Search Title: Layout and results from the initial operation of the high-resolution x-ray imaging crystal spectrometer on the Large Helical Device First results of ion and electron temperature profile measurements from the x-ray imaging

  9. A high-resolution imaging X-ray crystal spectrometer for high energy

    Office of Scientific and Technical Information (OSTI)

    density (HED) plasmas (Journal Article) | SciTech Connect Journal Article: A high-resolution imaging X-ray crystal spectrometer for high energy density (HED) plasmas Citation Details In-Document Search Title: A high-resolution imaging X-ray crystal spectrometer for high energy density (HED) plasmas Authors: Chen, H ; Bitter, M ; Hill, K W ; Kerr, S ; Magee, E ; Nagel, S R ; Park, J ; Schneider, M B ; Stone, G ; Williams, G J ; Beiersdorfer, P Publication Date: 2014-05-29 OSTI Identifier:

  10. Atomic-resolution 3D structure of amyloid β fibrils: The Osaka mutation

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

    Schutz, Anne K.; Wall, Joseph; Vagt, Toni; Huber, Matthias; Ovchinnikova, Oxana Y.; Cadalbert, Riccardo; Guntert, Peter; Bockmann, Anja; Glockshuber, Rudi; Meier, Beat H.

    2014-11-13

    Despite its central importance for understanding the molecular basis of Alzheimer's disease (AD), high-resolution structural information on amyloid β-peptide (Aβ) fibrils, which are intimately linked with AD, is scarce. We report an atomic-resolution fibril structure of the Aβ 1-40 peptide with the Osaka mutation (E22Δ), associated with early-onset AD. The structure, which differs substantially from all previously proposed models, is based on a large number of unambiguous intra- and intermolecular solid-state NMR distance restraints

  11. Demonstration of 12 nm resolution Fresnel zone plate lens based soft x-ray microscopy

    SciTech Connect (OSTI)

    Chao, W.; Kim, J.; Rekawa, S.; Fischer, P.; Anderson, E. H.

    2009-06-05

    To extend soft x-ray microscopy to a resolution of order 10 nm or better, we developed a new nanofabrication process for Fresnel zone plate lenses. The new process, based on the double patterning technique, has enabled us to fabricate high quality gold zone plates with 12 nm outer zones. Testing of the zone plate with the full-field transmission x-ray microscope, XM-1, in Berkeley, showed that the lens clearly resolved 12 nm lines and spaces. This result represents a significant step towards 10 nm resolution and beyond.

  12. Layout And Results From The Initial Opeeration Of The High-resolution X-ray

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

    Imaging Crystal Spectrometer On The Large Helical Device (Technical Report) | SciTech Connect Layout And Results From The Initial Opeeration Of The High-resolution X-ray Imaging Crystal Spectrometer On The Large Helical Device Citation Details In-Document Search Title: Layout And Results From The Initial Opeeration Of The High-resolution X-ray Imaging Crystal Spectrometer On The Large Helical Device First results of ion and electron temperature pro le measurements from the x-ray imaging

  13. Toward Real-time Modeling of Human Heart Ventricles at Cellular Resolution:

    Office of Scientific and Technical Information (OSTI)

    Multi-hour Simulation of Drug-induced Arrhythmias (Conference) | SciTech Connect Toward Real-time Modeling of Human Heart Ventricles at Cellular Resolution: Multi-hour Simulation of Drug-induced Arrhythmias Citation Details In-Document Search Title: Toward Real-time Modeling of Human Heart Ventricles at Cellular Resolution: Multi-hour Simulation of Drug-induced Arrhythmias Authors: Mirin, A A ; Richards, D F ; Glosli, J N ; Draeger, E W ; Chan, B ; Fattebert, J ; Krauss, W D ; Oppelstrup, T

  14. Toward Real-time Modeling of Human Heart Ventricles at Cellular Resolution:

    Office of Scientific and Technical Information (OSTI)

    Multi-hour Simulation of Drug-induced Arrhythmias (Conference) | SciTech Connect Toward Real-time Modeling of Human Heart Ventricles at Cellular Resolution: Multi-hour Simulation of Drug-induced Arrhythmias Citation Details In-Document Search Title: Toward Real-time Modeling of Human Heart Ventricles at Cellular Resolution: Multi-hour Simulation of Drug-induced Arrhythmias × You are accessing a document from the Department of Energy's (DOE) SciTech Connect. This site is a product of DOE's

  15. Correction of motion measurement errors beyond the range resolution of a synthetic aperture radar

    DOE Patents [OSTI]

    Doerry, Armin W. (Albuquerque, NM); Heard, Freddie E. (Albuquerque, NM); Cordaro, J. Thomas (Albuquerque, NM)

    2008-06-24

    Motion measurement errors that extend beyond the range resolution of a synthetic aperture radar (SAR) can be corrected by effectively decreasing the range resolution of the SAR in order to permit measurement of the error. Range profiles can be compared across the slow-time dimension of the input data in order to estimate the error. Once the error has been determined, appropriate frequency and phase correction can be applied to the uncompressed input data, after which range and azimuth compression can be performed to produce a desired SAR image.

  16. Home Energy Audits Can Help You Keep That New Year's Resolution |

    Energy Savers [EERE]

    Department of Energy Home Energy Audits Can Help You Keep That New Year's Resolution Home Energy Audits Can Help You Keep That New Year's Resolution January 3, 2013 - 8:25am Addthis Blower door test during a home energy audit. | Holtkamp Heating & A/C, Inc. Blower door test during a home energy audit. | Holtkamp Heating & A/C, Inc. Jason Lutterman Communications Specialist, Office of Energy Efficiency and Renewable Energy How does it work? You can save energy and money this year by

  17. Cryogenic, high-resolution x-ray detector with high count rate capability

    DOE Patents [OSTI]

    Frank, Matthias (Oakland, CA); Mears, Carl A. (Windsor, CA); Labov, Simon E. (Berkeley, CA); Hiller, Larry J. (Livermore, CA); Barfknecht, Andrew T. (Menlo Park, CA)

    2003-03-04

    A cryogenic, high-resolution X-ray detector with high count rate capability has been invented. The new X-ray detector is based on superconducting tunnel junctions (STJs), and operates without thermal stabilization at or below 500 mK. The X-ray detector exhibits good resolution (.about.5-20 eV FWHM) for soft X-rays in the keV region, and is capable of counting at count rates of more than 20,000 counts per second (cps). Simple, FET-based charge amplifiers, current amplifiers, or conventional spectroscopy shaping amplifiers can provide the electronic readout of this X-ray detector.

  18. Audit Resolution

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

    9 DOE/IG-0828 October 2009 Department of Energy Washington, DC 20585 October 16, 2009 MEMORANDUM FOR THE SECRETARY FROM: Gregory H. Friedman Inspector General SUBJECT: INFORMATION: Evaluation Report on "The Department's Unclassified Cyber Security Program" BACKGROUND Industry experts report that security challenges and threats are continually evolving as malicious activity has become more web-based and attackers are able to rapidly adapt their attack methods. In addition, the number of

  19. Audit Resolution

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

    The Office of Science's Management of Information Technology Resources DOE/IG-0831 November 2009 Department of Energy Washington, DC 20585 November 20, 2009 MEMORANDUM FOR THE SECRETARY FROM: Gregory H. Friedman Inspector General SUBJECT: Audit Report on "The Office of Science's Management of Information Technology Resources" BACKGROUND The Department of Energy's Office of Science (Science) and its facility contractors are aggressive users of information technology (IT) to support

  20. Audit Resolution

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

    West Virginia OAS-RA-11-09 June 2011 Department of Energy Washington, DC 20585 June 13, 2011 MEMORANDUM FOR THE ACTING ASSISTANT SECRETARY FOR ENERGY EFFICIENCY AND RENEWABLE ENERGY FROM: Gregory H. Friedman Inspector General SUBJECT: INFORMATION: Audit Report on "The Department of Energy's Weatherization Assistance Program Funded under the American Recovery and Reinvestment Act in the State of West Virginia" BACKGROUND The Department of Energy's Weatherization Assistance Program

  1. Gap Resolution

    Energy Science and Technology Software Center (OSTI)

    2009-06-16

    With the continued improvements of next generation DNA sequencing technologies and their advantages over traditional Sanger sequencing, the Joint Genome Institute (JGI) has modified its sequencing pipeline to take advantage of the benefits of such technologies. Currently, standard 454 Titanium, paired end 454 Titanium, and Illumina GAll data are generated for all microbial projects and then assembled using draft assemblies at a much greater throughput than before. However, it also presents us with new challenges.more »In addition to the increased throughput, we also have to deal with a larger number of gaps in the Newbler genome assemblies. Gaps in these assemblies are usually caused by repeats (Newbler collapses repeat copies into individual contigs, thus creating gaps), strong secondary structures, and artifacts of the PCR process (specific to 454 paired end libraries). Some gaps in draft assemblies can be resolved merely by adding back the collapsed data from repeats. To expedite gap closure and assembly improvement on large numbers of these assemblies, we developed software to address this issue.« less

  2. Audit Resolution

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

    ... The following chart represents the variance between prime ... Solutions Hanford 200 87 287 Battelle Memorial Institute PNNL 27 114 141 UT-Battelle ORNL 41 161 202 Bechtel Jacobs ...

  3. Audit Resolution

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

    security controls. The issues we identified were due, at least in part, to inadequate communication and implementation of required cyber security policies by Headquarters and...

  4. Audit Resolution

    Energy Savers [EERE]

    Industrial Carbon Capture and Storage Program Funded by the American Recovery and Reinvestment Act OAS-RA-13-15 March 2013 Department of Energy Washington, DC 20585 March 21, 2013 MEMORANDUM FOR THE SECRETARY FROM: Gregory H. Friedman Inspector General SUBJECT: INFORMATION: Audit Report on "The Department of Energy's Industrial Carbon Capture and Storage Program Funded by the American Recovery and Reinvestment Act" INTRODUCTION AND OBJECTIVE The Department of Energy received nearly

  5. An object model for genome information at all levels of resolution

    SciTech Connect (OSTI)

    Honda, S.; Parrott, N.W.; Smith, R.; Lawrence, C.

    1993-12-31

    An object model for genome data at all levels of resolution is described. The model was derived by considering the requirements for representing genome related objects in three application domains: genome maps, large-scale DNA sequencing, and exploring functional information in gene and protein sequences. The methodology used for the object-oriented analysis is also described.

  6. Virtually distortion-free imaging system for large field, high resolution lithography

    DOE Patents [OSTI]

    Hawryluk, A.M.; Ceglio, N.M.

    1993-01-05

    Virtually distortion free large field high resolution imaging is performed using an imaging system which contains large field distortion or field curvature. A reticle is imaged in one direction through the optical system to form an encoded mask. The encoded mask is then imaged back through the imaging system onto a wafer positioned at the reticle position.

  7. Application of spatially resolved high resolution crystal spectrometry to inertial confinement fusion plasmas

    SciTech Connect (OSTI)

    Hill, K. W.; Bitter, M.; Delgado-Aparacio, L.; Pablant, N. A.; Beiersdorfer, P.; Schneider, M.; Widmann, K.; Sanchez del Rio, M.; Zhang, L.

    2012-10-15

    High resolution ({lambda}/{Delta}{lambda}{approx} 10 000) 1D imaging x-ray spectroscopy using a spherically bent crystal and a 2D hybrid pixel array detector is used world wide for Doppler measurements of ion-temperature and plasma flow-velocity profiles in magnetic confinement fusion plasmas. Meter sized plasmas are diagnosed with cm spatial resolution and 10 ms time resolution. This concept can also be used as a diagnostic of small sources, such as inertial confinement fusion plasmas and targets on x-ray light source beam lines, with spatial resolution of micrometers, as demonstrated by laboratory experiments using a 250-{mu}m {sup 55}Fe source, and by ray-tracing calculations. Throughput calculations agree with measurements, and predict detector counts in the range 10{sup -8}-10{sup -6} times source x-rays, depending on crystal reflectivity and spectrometer geometry. Results of the lab demonstrations, application of the technique to the National Ignition Facility (NIF), and predictions of performance on NIF will be presented.

  8. City of Knoxville, Tennessee City Council Resolution for solar PV system

    Broader source: Energy.gov [DOE]

    This document is a scan of the resolution, dated July 26, 2011, for the approval of the City of Knoxville, Tennessee to use $250,000 of EECBG funding for finding innovative financing mechanisms for a planned installation of a 90-kW solar PV system.

  9. SUPER-RESOLUTION ULTRASOUND TOMOGRAPHY: A PRELIMINARY STUDY WITH A RING ARRAY

    SciTech Connect (OSTI)

    HUANG, LIANJIE; SIMONETTI, FRANCESCO; DURIC, NEBOJSA; RAMA, OLSI

    2007-01-18

    Ultrasound tomography attempts to retrieve the structure of an objective by exploiting the interaction of acoustic waves with the object. A fundamental limit of ultrasound tomography is that features cannot be resolved if they are spaced less than {lambda}/2 apart, where {lambda} is wavelength of the probing wave, regardless of the degree of accuracy of the measurements. Therefore, since the attenuation of the probing wave with propagation distance increases as {lambda} decreases, resolution has to be traded against imaging depth. Recently, it has been shown that the {lambda}/2 limit is a consequence of the Born approximation (implicit in the imaging algorithms currently employed) which neglects the distortion of the probing wavefield as it travels through the medium to be imaged. On the other hand, such a distortion, which is due to the multiple scattering phenomenon, can encode unlimited resolution in the radiating component of the scattered field. Previously, a resolution better than {lambda}/3 has been reported in these proceedings [F. Simonetti, pp. 126 (2006)] in the case of elastic wave probing. In this paper, they demonstrate experimentally a resolution better than {lambda}/4 for objects immersed in a water bth probed by means of a ring array which excites and detects pressure waves in a full view configuration.

  10. The Importance of High Temporal Resolution in Modeling Renewable Energy Penetration Scenarios

    SciTech Connect (OSTI)

    Nicolosi, Marco; Mills, Andrew D; Wiser, Ryan H

    2010-10-08

    Traditionally, modeling investment and dispatch problems in electricity economics has been limited by computation power. Due to this limitation, simplifications are applied. One common practice, for example, is to reduce the temporal resolution of the dispatch by clustering similar load levels. The increase of intermittent electricity from renewable energy sources (RES-E) changes the validity of this assumption. RES-E already cover a certain amount of the total demand. This leaves an increasingly volatile residual demand to be matched by the conventional power market. This paper quantifies differences in investment decisions by applying three different time-resolution residual load patterns in an investment and dispatch power system model. The model optimizes investment decisions in five year steps between today and 2030 with residual load levels for 8760, 288 and 16 time slices per year. The market under consideration is the four zone ERCOT market in Texas. The results show that investment decisions significantly differ across the three scenarios. In particular, investments into base-load technologies are substantially reduced in the high resolution scenario (8760 residual load levels) relative to the scenarios with lower temporal resolution. Additionally, the amount of RES-E curtailment and the market value of RES-E exhibit noteworthy differences.

  11. Improving Alpha Spectrometry Energy Resolution by Ion Implantation with ICP-MS

    SciTech Connect (OSTI)

    Dion, Michael P.; Liezers, Martin; Farmer, Orville T.; Miller, Brian W.; Morley, Shannon M.; Barinaga, Charles J.; Eiden, Gregory C.

    2015-01-01

    We report results of a novel technique using an Inductively Coupled Plasma Mass Spectrometer (ICP-MS) as a method of source preparation for alpha spectrometry. This method produced thin, contaminant free 241Am samples which yielded extraordinary energy resolution which appear to be at the lower limit of the detection technology used in this research.

  12. LandScan 2012 High Resolution Global Population DataSet

    Energy Science and Technology Software Center (OSTI)

    2013-09-17

    The LandScan data set is a worldwide population database compiled on a 30"x20" latitude/longitude grid. Census counts at sub-national level were apportioned to each grid cell based on likelihood coefficients, which are based on land cover, slope, road proximity, high-resolution imagery, and other data sets.

  13. Laser Doppler field sensor for high resolution flow velocity imaging without camera

    SciTech Connect (OSTI)

    Voigt, Andreas; Bayer, Christian; Shirai, Katsuaki; Buettner, Lars; Czarske, Juergen

    2008-09-20

    In this paper we present a laser sensor for highly spatially resolved flow imaging without using a camera. The sensor is an extension of the principle of laser Doppler anemometry (LDA). Instead of a parallel fringe system, diverging and converging fringes are employed. This method facilitates the determination of the tracer particle position within the measurement volume and leads to an increased spatial and velocity resolution compared to conventional LDA. Using a total number of four fringe systems the flow is resolved in two spatial dimensions and the orthogonal velocity component. Since no camera is used, the resolution of the sensor is not influenced by pixel size effects. A spatial resolution of 4 {mu}m in the x direction and 16 {mu}m in the y direction and a relative velocity resolution of 1x10{sup -3} have been demonstrated up to now. As a first application we present the velocity measurement of an injection nozzle flow. The sensor is also highly suitable for applications in nano- and microfluidics, e.g., for the measurement of flow rates.

  14. Final Report: High Spectral Resolution Atmospheric Emitted Radiance Studies with the ARM UAV

    SciTech Connect (OSTI)

    Revercomb, Henry E.

    1999-12-31

    The active participation in the Atmospheric Radiation Measurement (ARM) Unmanned Airborne Vehicle (UAV) science team that was anticipated in the grant proposal was indefinitely delayed after the first year due to a programmatic decision to exclude the high spectral resolution observations from the existing ARM UAV program. However, this report shows that substantial progress toward the science objectives of this grant have made with the help of separate funding from NASA and other agencies. In the four year grant period (including time extensions), a new high spectral resolution instrument has been flown and has successfully demonstrated the ability to obtain measurements of the type needed in the conduct of this grant. In the near term, the third water vapor intensive observing period (WVIOP-3) in October 2000 will provide an opportunity to bring the high spectral resolution observations of upwelling radiance into the ARM program to complement the downwelling radiance observations from the existing ARM AERI instruments. We look forward to a time when the ARM-UAV program is able to extend its scope to include the capability for making these high spectral resolution measurements from a UAV platform.

  15. Spatially resolved and observer-free experimental quantification of spatial resolution in tomographic images

    SciTech Connect (OSTI)

    Tsekenis, S. A.; McCann, H.; Tait, N.

    2015-03-15

    We present a novel framework and experimental method for the quantification of spatial resolution of a tomography system. The framework adopts the black box view of an imaging system, considering only its input and output. The tomography system is locally stimulated with a step input, viz., a sharp edge. The output, viz., the reconstructed images, is analysed by Fourier decomposition of their spatial frequency components, and the local limiting spatial resolution is determined using a cut-off threshold. At no point is an observer involved in the process. The framework also includes a means of translating the quantification region in the imaging space, thus creating a spatially resolved map of objectively quantified spatial resolution. As a case-study, the framework is experimentally applied using a gaseous propane phantom measured by a well-established chemical species tomography system. A spatial resolution map consisting of 28 regions is produced. In isolated regions, the indicated performance is 4-times better than that suggested in the literature and varies by 57% across the imaging space. A mechanism based on adjacent but non-interacting beams is hypothesised to explain the observed behaviour. The mechanism suggests that, as also independently concluded by other methods, a geometrically regular beam array maintains maximum objectivity in reconstructions. We believe that the proposed framework, methodology, and findings will be of value in the design and performance evaluation of tomographic imaging arrays and systems.

  16. Nanometer resolution optical coherence tomography using broad bandwidth XUV and soft x-ray radiation

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

    Fuchs, Silvio; Rödel, Christian; Blinne, Alexander; Zastrau, Ulf; Wünsche, Martin; Hilbert, Vinzenz; Glaser, Leif; Viefhaus, Jens; Frumker, Eugene; Corkum, Paul; et al

    2016-02-10

    Optical coherence tomography (OCT) is a non-invasive technique for cross-sectional imaging. It is particularly advantageous for applications where conventional microscopy is not able to image deeper layers of samples in a reasonable time, e.g. in fast moving, deeper lying structures. However, at infrared and optical wavelengths, which are commonly used, the axial resolution of OCT is limited to about 1 μm, even if the bandwidth of the light covers a wide spectral range. Here, we present extreme ultraviolet coherence tomography (XCT) and thus introduce a new technique for non-invasive cross-sectional imaging of nanometer structures. XCT exploits the nanometerscale coherence lengthsmore » corresponding to the spectral transmission windows of, e.g., silicon samples. The axial resolution of coherence tomography is thus improved from micrometers to a few nanometers. Tomographic imaging with an axial resolution better than 18 nm is demonstrated for layer-type nanostructures buried in a silicon substrate. Using wavelengths in the water transmission window, nanometer-scale layers of platinum are retrieved with a resolution better than 8 nm. As a result, XCT as a nondestructive method for sub-surface tomographic imaging holds promise for several applications in semiconductor metrology and imaging in the water window.« less

  17. Regulatory/backfit analysis for the resolution of Unresolved Safety Issue A-44, Station Blackout

    SciTech Connect (OSTI)

    Rubin, A.M.

    1988-06-01

    Station blackout is the complete loss of alternating current (ac) electric power to the essential and nonessential buses in a nuclear power plant; it results when both offsite power and the onsite emergency ac power systems are unavailable. Because many safety systems required for reactor core decay heat removal and containment heat removal depend on ac power, the consequences of a station blackout could be severe. Because of the concern about the frequency of loss of offsite power, the number of failures of emergency diesel generators, and the potentially severe consequences of a loss of all ac power, ''Station Blackout'' was designated as Unresolved Safety Issue (USI) A-44. This report presents the regulatory/backfit analysis for USI A-44. It includes (1) a summary of the issue, (2) the recommended technical resolution, (3) alternative resolutions considered by the Nuclear Regulatory Commission (NRC) staff, (4) an assessment of the benefits and costs of the recommended resolution, (5) the decision rationale, (6) the relationship between USI A-44 and other NRC programs and requirements, and (7) a backfit analysis demonstrating that the resolution of USI A-44 complies with the backfit rule (10 CFR 50.109).

  18. High spatial resolution X-ray and gamma ray imaging system using diffraction crystals

    DOE Patents [OSTI]

    Smither, Robert K. (Hinsdale, IL)

    2011-05-17

    A method and a device for high spatial resolution imaging of a plurality of sources of x-ray and gamma-ray radiation are provided. The device comprises a plurality of arrays, with each array comprising a plurality of elements comprising a first collimator, a diffracting crystal, a second collimator, and a detector.

  19. Accurate atmospheric parameters at moderate resolution using spectral indices: Preliminary application to the marvels survey

    SciTech Connect (OSTI)

    Ghezzi, Luan; Da Costa, Luiz N.; Maia, Marcio A. G.; Ogando, Ricardo L. C.; Dutra-Ferreira, Letcia; Lorenzo-Oliveira, Diego; Porto de Mello, Gustavo F.; Santiago, Baslio X.; De Lee, Nathan; Lee, Brian L.; Ge, Jian; Wisniewski, John P.; Gonzlez Hernndez, Jonay I.; Stassun, Keivan G.; Cargile, Phillip; Pepper, Joshua; Fleming, Scott W.; Schneider, Donald P.; Mahadevan, Suvrath; Wang, Ji; and others

    2014-12-01

    Studies of Galactic chemical, and dynamical evolution in the solar neighborhood depend on the availability of precise atmospheric parameters (effective temperature T {sub eff}, metallicity [Fe/H], and surface gravity log g) for solar-type stars. Many large-scale spectroscopic surveys operate at low to moderate spectral resolution for efficiency in observing large samples, which makes the stellar characterization difficult due to the high degree of blending of spectral features. Therefore, most surveys employ spectral synthesis, which is a powerful technique, but relies heavily on the completeness and accuracy of atomic line databases and can yield possibly correlated atmospheric parameters. In this work, we use an alternative method based on spectral indices to determine the atmospheric parameters of a sample of nearby FGK dwarfs and subgiants observed by the MARVELS survey at moderate resolving power (R ? 12,000). To avoid a time-consuming manual analysis, we have developed three codes to automatically normalize the observed spectra, measure the equivalent widths of the indices, and, through a comparison of those with values calculated with predetermined calibrations, estimate the atmospheric parameters of the stars. The calibrations were derived using a sample of 309 stars with precise stellar parameters obtained from the analysis of high-resolution FEROS spectra, permitting the low-resolution equivalent widths to be directly related to the stellar parameters. A validation test of the method was conducted with a sample of 30 MARVELS targets that also have reliable atmospheric parameters derived from the high-resolution spectra and spectroscopic analysis based on the excitation and ionization equilibria method. Our approach was able to recover the parameters within 80 K for T {sub eff}, 0.05 dex for [Fe/H], and 0.15 dex for log g, values that are lower than or equal to the typical external uncertainties found between different high-resolution analyses. An additional test was performed with a subsample of 138 stars from the ELODIE stellar library, and the literature atmospheric parameters were recovered within 125 K for T {sub eff}, 0.10 dex for [Fe/H], and 0.29 dex for log g. These precisions are consistent with or better than those provided by the pipelines of surveys operating with similar resolutions. These results show that the spectral indices are a competitive tool to characterize stars with intermediate resolution spectra.

  20. High spatial resolution brain functional MRI using submillimeter balanced steady-state free precession acquisition

    SciTech Connect (OSTI)

    Wu, Pei-Hsin; Chung, Hsiao-Wen; Tsai, Ping-Huei; Wu, Ming-Long; Chuang, Tzu-Chao; Shih, Yi-Yu; Huang, Teng-Yi

    2013-12-15

    Purpose: One of the technical advantages of functional magnetic resonance imaging (fMRI) is its precise localization of changes from neuronal activities. While current practice of fMRI acquisition at voxel size around 3 3 3 mm{sup 3} achieves satisfactory results in studies of basic brain functions, higher spatial resolution is required in order to resolve finer cortical structures. This study investigated spatial resolution effects on brain fMRI experiments using balanced steady-state free precession (bSSFP) imaging with 0.37 mm{sup 3} voxel volume at 3.0 T. Methods: In fMRI experiments, full and unilateral visual field 5 Hz flashing checkerboard stimulations were given to healthy subjects. The bSSFP imaging experiments were performed at three different frequency offsets to widen the coverage, with functional activations in the primary visual cortex analyzed using the general linear model. Variations of the spatial resolution were achieved by removing outerk-space data components. Results: Results show that a reduction in voxel volume from 3.44 3.44 2 mm{sup 3} to 0.43 0.43 2 mm{sup 3} has resulted in an increase of the functional activation signals from (7.7 1.7)% to (20.9 2.0)% at 3.0 T, despite of the threefold SNR decreases in the original images, leading to nearly invariant functional contrast-to-noise ratios (fCNR) even at high spatial resolution. Activation signals aligning nicely with gray matter sulci at high spatial resolution would, on the other hand, have possibly been mistaken as noise at low spatial resolution. Conclusions: It is concluded that the bSSFP sequence is a plausible technique for fMRI investigations at submillimeter voxel widths without compromising fCNR. The reduction of partial volume averaging with nonactivated brain tissues to retain fCNR is uniquely suitable for high spatial resolution applications such as the resolving of columnar organization in the brain.

  1. Introduction & Overview

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

    OpenADR 2.0 Standards (OpenADR Alliance) Sour OpenADR Overview Open Automated Demand Response (OpenADR) provides a non-proprietary, open standardized DR interface that allows ...

  2. Potential Next Steps for the New Orleans City Council Energy Efficiency Resolution

    SciTech Connect (OSTI)

    Doris, E.

    2011-09-01

    This document is adapted from an actual February 2008 deliverable memo and report delivered by the National Renewable Energy Laboratory (NREL) to the City Council of New Orleans, the office of the Mayor of New Orleans, the Chairperson of the Citizen Stakeholders Group (New Orleans Energy Task Force) and the Department of Energy Project Officer in February of 2008. In January 2008, the New Orleans Utility Committee requested review, commentary, and suggestions for Utility Committee next steps related to the Energy Efficiency Resolution (the Resolution) passed by the City Council in December 2007. The suggestions are reprinted here as: (1) An illustration of opportunities for other local governments for the development and implementation of effective energy efficiency ordinances and resolutions; and (2) An example of the type of policy technical assistance that DOE/NREL provides to communities. For more information on the strategy for delivering assistance, please see: www.nrel.gov/docs/fy11osti/48689.pdf. Based on experience in other communities and energy efficiency policies and programs, NREL found the Resolution to be a solid framework for increasing the responsible use of energy efficiency and reaping the associated economic and environmental benefits in the city of New Orleans. The remainder of this document provides the requested suggestions for next steps in implementing the word and spirit of the resolution. These suggestions integrate the extensive work of other entities, including the New Orleans Mayor's office, the New Orleans Energy Advisory Committee, the Energy Efficiency Initiative, and the U.S. Environmental Protection Agency's National Action Plan for Energy Efficiency. In general, three actions were suggested for funding mechanisms, two for near-term successes, and two for longer-term success.

  3. High resolution transmission spectroscopy as a diagnostic for Jovian exoplanet atmospheres: constraints from theoretical models

    SciTech Connect (OSTI)

    Kempton, Eliza M.-R.; Perna, Rosalba; Heng, Kevin

    2014-11-01

    We present high resolution transmission spectra of giant planet atmospheres from a coupled three-dimensional (3D) atmospheric dynamics and transmission spectrum model that includes Doppler shifts which arise from winds and planetary motion. We model Jovian planets covering more than two orders of magnitude in incident flux, corresponding to planets with 0.9-55 day orbital periods around solar-type stars. The results of our 3D dynamical models reveal certain aspects of high resolution transmission spectra that are not present in simple one-dimensional (1D) models. We find that the hottest planets experience strong substellar to anti-stellar (SSAS) winds, resulting in transmission spectra with net blueshifts of up to 3 km s{sup 1}, whereas less irradiated planets show almost no net Doppler shifts. We find only minor differences between transmission spectra for atmospheres with temperature inversions and those without. Compared to 1D models, peak line strengths are significantly reduced for the hottest atmospheres owing to Doppler broadening from a combination of rotation (which is faster for close-in planets under the assumption of tidal locking) and atmospheric winds. Finally, high resolution transmission spectra may be useful in studying the atmospheres of exoplanets with optically thick clouds since line cores for very strong transitions should remain optically thick to very high altitude. High resolution transmission spectra are an excellent observational test for the validity of 3D atmospheric dynamics models, because they provide a direct probe of wind structures and heat circulation. Ground-based exoplanet spectroscopy is currently on the verge of being able to verify some of our modeling predictions, most notably the dependence of SSAS winds on insolation. We caution that interpretation of high resolution transmission spectra based on 1D atmospheric models may be inadequate, as 3D atmospheric motions can produce a noticeable effect on the absorption signatures.

  4. PROJECT PROFILE: High-resolution Investigations of Transport Limiting Defects and Interfaces in Thin-Film Photovoltaic Devices

    Broader source: Energy.gov [DOE]

    This project will develop the capability of high-resolution transport imaging in photovoltaic (PV) devices, which is useful for improving polycrystalline thin-film PV materials.

  5. SANDIA CORPORATION

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

    PO09 - DISPUTES Seller and Sandia agree to use the Sandia Acquisition Conflict Resolution Process described in Policy and Guideline 5.8 set forth at http:www.sandia.govbus-ops...

  6. Detecting breast microcalcifications using super-resolution and wave-equation ultrasound imaging: a numerical phantom study

    SciTech Connect (OSTI)

    Huang, Lianjie; Simonetti, Francesco; Huthwaite, Peter; Rosenberg, Robert; Williamson, Michael

    2010-01-01

    Ultrasound image resolution and quality need to be significantly improved for breast microcalcification detection. Super-resolution imaging with the factorization method has recently been developed as a promising tool to break through the resolution limit of conventional imaging. In addition, wave-equation reflection imaging has become an effective method to reduce image speckles by properly handling ultrasound scattering/diffraction from breast heterogeneities during image reconstruction. We explore the capabilities of a novel super-resolution ultrasound imaging method and a wave-equation reflection imaging scheme for detecting breast microcalcifications. Super-resolution imaging uses the singular value decomposition and a factorization scheme to achieve an image resolution that is not possible for conventional ultrasound imaging. Wave-equation reflection imaging employs a solution to the acoustic-wave equation in heterogeneous media to backpropagate ultrasound scattering/diffraction waves to scatters and form images of heterogeneities. We construct numerical breast phantoms using in vivo breast images, and use a finite-difference wave-equation scheme to generate ultrasound data scattered from inclusions that mimic microcalcifications. We demonstrate that microcalcifications can be detected at full spatial resolution using the super-resolution ultrasound imaging and wave-equation reflection imaging methods.

  7. Fabrication of optical multilayer for two-color phase plate in super-resolution microscope

    SciTech Connect (OSTI)

    Iketaki, Yoshinori; Kitagawa, Katsuichi; Hidaka, Kohjiro; Kato, Naoki; Hirabayashi, Akira; Bokor, Nandor

    2014-07-15

    In super-resolution microscopy based on fluorescence depletion, the two-color phase plate (TPP) is an indispensable optical element, which can independently control the phase shifts for two beams of different color, i.e., the pump and erase beams. By controlling a phase shift of the erase beam through the TPP, the erase beam can be modulated into a doughnut shape, while the pump beam maintains the initial Gaussian shape. To obtain a reliable optical multiplayer (ML) for the TPP, we designed a ML with only two optical layers by performing numerical optimization. The measured phase shifts generated by the fabricated ML using interferometry correspond to the design values. The beam profiles in the focal plane are also consistent with theoretical results. Although the fabricated ML consists of only two optical layers, the ML can provide a suitable phase modulation function for the TPP in a practical super-resolution microscope.

  8. Facile method to stain the bacterial cell surface for super-resolution fluorescence microscopy

    SciTech Connect (OSTI)

    Gunsolus, Ian L.; Hu, Dehong; Mihai, Cosmin; Lohse, Samuel E.; Lee, Chang-Soo; Torelli, Marco; Hamers, Robert J.; Murphy, Catherine; Orr, Galya; Haynes, Christy L.

    2014-01-01

    A method to fluorescently stain the surfaces of both Gram-negative and Gram-positive bacterial cells compatible with super-resolution fluorescence microscopy is presented. This method utilizes a commercially-available fluorescent probe to label primary amines at the surface of the cell. We demonstrate efficient staining of two bacterial strains, the Gram-negative Shewanella oneidensis MR-1 and the Gram-positive Bacillus subtilis 168. Using structured illumination microscopy and stochastic optical reconstruction microscopy, which require high quantum yield or specialized dyes, we show that this staining method may be used to resolve the bacterial cell surface with sub-diffraction-limited resolution. We further use this method to identify localization patterns of nanomaterials, specifically cadmium selenide quantum dots, following interaction with bacterial cells.

  9. Study of fish response using particle image velocimetry and high-speed, high-resolution imaging

    SciTech Connect (OSTI)

    Deng, Z.; Richmond, M. C.; Mueller, R. P.; Gruensch, G. R.

    2004-10-01

    Fish swimming has fascinated both engineers and fish biologists for decades. Digital particle image velocimetry (DPIV) and high-speed, high-resolution digital imaging are recently developed analysis tools that can help engineers and biologists better understand how fish respond to turbulent environments. This report details studies to evaluate DPIV. The studies included a review of existing literature on DPIV, preliminary studies to test the feasibility of using DPIV conducted at our Flow Biology Laboratory in Richland, Washington September through December 2003, and applications of high-speed, high-resolution digital imaging with advanced motion analysis to investigations of fish injury mechanisms in turbulent shear flows and bead trajectories in laboratory physical models. Several conclusions were drawn based on these studies, which are summarized as recommendations for proposed research at the end of this report.

  10. New developments in high resolution borehole seismology and their applications to reservoir development and management

    SciTech Connect (OSTI)

    Paulsson, B.N.P.

    1997-08-01

    Single-well seismology, Reverse Vertical Seismic Profiles (VSP`s) and Crosswell seismology are three new seismic techniques that we jointly refer to as borehole seismology. Borehole seismic techniques are of great interest because they can obtain much higher resolution images of oil and gas reservoirs than what is obtainable with currently used seismic techniques. The quality of oil and gas reservoir management decisions depend on the knowledge of both the large and the fine scale features in the reservoirs. Borehole seismology is capable of mapping reservoirs with an order of magnitude improvement in resolution compared with currently used technology. In borehole seismology we use a high frequency seismic source in an oil or gas well and record the signal in the same well, in other wells, or on the surface of the earth.

  11. Identification of sub-grains and low angle boundaries beyond the angular resolution of EBSD maps

    SciTech Connect (OSTI)

    Germain, L.; Kratsch, D.; Salib, M.; Gey, N.

    2014-12-15

    A new method called ALGrId (Anti-Leak GRain IDentification) is proposed for the detection of sub-grains beyond the relative angular resolution of Electron Backscatter Diffraction maps. It does not use any additional information such as Kikuchi Pattern Quality map nor need data filtering. It uses a modified Dijkstra algorithm which seeks the continuous set of boundaries having the highest average disorientation angle. - Highlights: ALGrId is a new method to identify sub-grains and low angle boundaries in EBSD maps. Unlike classical methods, ALGrId works even beyond the relative angular resolution. If the orientation noise peaks at 0.7, ALGrid detects 0.4-boundaries correctly. In the same example, the classical algorithm identifies 1.1-boundaries only.

  12. Nanoscale deformation analysis with high-resolution transmission electron microscopy and digital image correlation

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

    Wang, Xueju; Pan, Zhipeng; Fan, Feifei; Wang, Jiangwei; Liu, Yang; Mao, Scott X.; Zhu, Ting; Xia, Shuman

    2015-09-10

    We present an application of the digital image correlation (DIC) method to high-resolution transmission electron microscopy (HRTEM) images for nanoscale deformation analysis. The combination of DIC and HRTEM offers both the ultrahigh spatial resolution and high displacement detection sensitivity that are not possible with other microscope-based DIC techniques. We demonstrate the accuracy and utility of the HRTEM-DIC technique through displacement and strain analysis on amorphous silicon. Two types of error sources resulting from the transmission electron microscopy (TEM) image noise and electromagnetic-lens distortions are quantitatively investigated via rigid-body translation experiments. The local and global DIC approaches are applied for themore » analysis of diffusion- and reaction-induced deformation fields in electrochemically lithiated amorphous silicon. As a result, the DIC technique coupled with HRTEM provides a new avenue for the deformation analysis of materials at the nanometer length scales.« less

  13. High-resolution spectroscopy of jet-cooled CH{sub 5}{sup +}: Progress

    SciTech Connect (OSTI)

    Savage, C.; Dong, F.; Nesbitt, D. J.

    2015-01-22

    Protonated methane (CH{sub 5}{sup +}) is thought to be a highly abundant molecular ion in interstellar medium, as well as a potentially bright ?wave- mm wave emitter that could serve as a tracer for methane. This paper describes progress and first successful efforts to obtain a high resolution, supersonically cooled spectrum of CH{sub 5}{sup +} in the 2900-3100 cm{sup ?1} region, formed in a slit supersonic discharge at low jet temperatures and with sub-Doppler resolution. Short term precision in frequency measurement (< 5 MHz on an hour time scale) is obtained from a thermally controlled optical transfer cavity servoloop locked onto a frequency stabilized HeNe laser. Long term precision (< 20 MHz day-to-day) due to pressure, temperature and humidity dependent index of refraction effects in the optical transfer cavity is also present and discussed.

  14. Achieving atomic resolution magnetic dichroism by controlling the phase symmetry of an electron probe

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

    Rusz, Jan; Idrobo, Juan -Carlos; Bhowmick, Somnath

    2014-09-30

    The calculations presented here reveal that an electron probe carrying orbital angular momentum is just a particular case of a wider class of electron beams that can be used to measure electron magnetic circular dichroism (EMCD) with atomic resolution. It is possible to obtain an EMCD signal with atomic resolution by simply breaking the symmetry of the electron probe phase front using the aberration-corrected optics of a scanning transmission electron microscope. The probe’s required phase distribution depends on the sample’s magnetic symmetry and crystal structure. The calculations indicate that EMCD signals that use the electron probe’s phase are as strongmore » as those obtained by nanodiffraction methods.« less

  15. Focusing, in-chamber spectrometer triplet for high resolution measurements on the Sandia Z facility

    SciTech Connect (OSTI)

    Wenger, D. F.; Sinars, D. B.; Rochau, G. A.; Bailey, J. E.; Porter, J. L.; Faenov, A. Ya.; Pikuz, T. A.; Pikuz, S. A.

    2006-10-15

    An early prototype of a focusing spectrometer with one-dimensional (1D) spatial resolution (FSSR) instrument was previously developed for use in the vacuum chamber of the Sandia Z facility [Sinars et al., J. Quant. Spectrosc. Radiat. Transf. 99, 595 (2006)]. This instrument used a single, spherically bent crystal to measure time-integrated Ar spectra from 0.295-0.378 nm with {lambda}/{delta}{lambda}>2000 and a 1D axial spatial resolution of {approx}50 {mu}m. We present the design of a final version of this instrument that improves the shielding, can be aligned more accurately, and uses three crystals instead of one. The last change enables coverage of multiple spectral ranges if different crystals are used, or multiple times if identical crystals and time-gated detectors are used. We also present results from initial prototyping tests on the Z facility using two crystals in a time-integrated mode.

  16. High-resolution monochromatic x-ray imaging system based on spherically bent crystals

    SciTech Connect (OSTI)

    Aglitskiy, Y.; Lehecka, T.; Obenschain, S.; Bodner, S.; Pawley, C.; Gerber, K.; Sethian, J.; Brown, C.M.; Seely, J.; Feldman, U.; Holland, G.

    1998-08-01

    We have developed an improved x-ray imaging system based on spherically curve crystals. It is designed and used for diagnostics of targets ablatively accelerated by the Nike KrF laser. A spherically curved quartz crystal (2d=6.687 {Angstrom}, R=200 mm) has been used to produce monochromatic backlit images with the He-like Si resonance line (1865 eV) as the source of radiation. The spatial resolution of the x-ray optical system is 1.7 {mu}m in selected places and 2{endash}3 {mu}m over a larger area. Time-resolved backlit monochromatic images of polystyrene planar targets driven by the Nike facility have been obtained with a spatial resolution of 2.5 {mu}m in selected places and 5 {mu}m over the focal spot of the Nike laser. {copyright} 1998 Optical Society of America

  17. High resolution monochromatic X-ray imaging system based on spherically bent crystals

    SciTech Connect (OSTI)

    Aglitskiy, Y.; Lehecka, T.; Obenschain, S.; Bodner, S.; Pawley, C.; Gerber, K.; Sethian, J.; Brown, C. M.; Seely, J.; Feldman, U.; Holland, G.

    1997-05-05

    We have developed a new X-ray imaging system based on spherically curved crystals. It is designed and used for diagnostics of targets ablatively accelerated by the Nike KrF laser. The imaging system is used for plasma diagnostics of the main target and for characterization of potential backlighters. A spherically curved quartz crystal (2d=6.687 A, R=200 mm) is used to produce monochromatic backlit images with the He-like Si resonance line (1865 eV) as the source of radiation. The spatial resolution of the X-ray optical system is 3-4 {mu}m. Time resolved backlit monochromatic images of CH planar targets driven by the Nike facility have been obtained with 6-7 {mu}m spatial resolution.

  18. High resolution monochromatic X-ray imaging system based on spherically bent crystals

    SciTech Connect (OSTI)

    Aglitskiy, Y.; Lehecka, T.; Obenschain, S.; Bodner, S.; Pawley, C.; Gerber, K.; Sethian, J.; Brown, C.M.; Seely, J.; Feldman, U.; Holland, G.

    1997-05-01

    We have developed a new X-ray imaging system based on spherically curved crystals. It is designed and used for diagnostics of targets ablatively accelerated by the Nike KrF laser [1,2]. The imaging system is used for plasma diagnostics of the main target and for characterization of potential backlighters. A spherically curved quartz crystal (2d=6.687{Angstrom}, R=200mm) is used to produce monochromatic backlit images with the He-like Si resonance line (1865 eV) as the source of radiation. The spatial resolution of the X-ray optical system is 3{endash}4 {mu}m. Time resolved backlit monochromatic images of CH planar targets driven by the Nike facility have been obtained with 6{endash}7 {mu}m spatial resolution. {copyright} {ital 1997 American Institute of Physics.}

  19. RESOLUTION STRATEGY FOR GEOMECHANICALLY-RELATED REPOSITORY DESIGN FOR THERMAL-MECHANICAL EFFECTS (RDTME)

    SciTech Connect (OSTI)

    M. Board

    2003-04-01

    In September of 2000, the U.S. Nuclear Regulatory Commission (NRC) issued an Issue Resolution Status Report (NRC 2000). The Key Technical Issue (KTI) agreements on Repository Design and Thermal-Mechanical Effects (RDTME) were jointly developed at the Technical Exchange and Management Meeting held on February 6-8, 2001 in Las Vegas, Nevada. In that report, a number of geomechanically-related issues were raised regarding the determination of rock properties, the estimation of the impacts of geologic variability, the use of numerical models, and the examination of drift degradation and design approach to the ground support system for the emplacement drifts. Ultimately, the primary end products of the KTI agreement resolution processes are an assessment of the preclosure stability of emplacement drifts and the associated ground support requirements. There is also an assessment of the postclosure degradation of the excavations when subjected to thermal and seismic-related stresses as well as in situ loading over time.

  20. Nanoscale deformation analysis with high-resolution transmission electron microscopy and digital image correlation

    SciTech Connect (OSTI)

    Wang, Xueju; Pan, Zhipeng; Fan, Feifei; Wang, Jiangwei; Liu, Yang; Mao, Scott X.; Zhu, Ting; Xia, Shuman

    2015-09-10

    We present an application of the digital image correlation (DIC) method to high-resolution transmission electron microscopy (HRTEM) images for nanoscale deformation analysis. The combination of DIC and HRTEM offers both the ultrahigh spatial resolution and high displacement detection sensitivity that are not possible with other microscope-based DIC techniques. We demonstrate the accuracy and utility of the HRTEM-DIC technique through displacement and strain analysis on amorphous silicon. Two types of error sources resulting from the transmission electron microscopy (TEM) image noise and electromagnetic-lens distortions are quantitatively investigated via rigid-body translation experiments. The local and global DIC approaches are applied for the analysis of diffusion- and reaction-induced deformation fields in electrochemically lithiated amorphous silicon. As a result, the DIC technique coupled with HRTEM provides a new avenue for the deformation analysis of materials at the nanometer length scales.

  1. The High-Resolution Lightweight Telescope for the EUV (HiLiTE)

    SciTech Connect (OSTI)

    Martinez-Galarce, D S; Boerner, P; Soufli, R; De Pontieu, B; Katz, N; Title, A; Gullikson, E M; Robinson, J C; Baker, S L

    2008-06-02

    The High-resolution Lightweight Telescope for the EUV (HiLiTE) is a Cassegrain telescope that will be made entirely of Silicon Carbide (SiC), optical substrates and metering structure alike. Using multilayer coatings, this instrument will be tuned to operate at the 465 {angstrom} Ne VII emission line, formed in solar transition region plasma at {approx}500,000 K. HiLiTE will have an aperture of 30 cm, angular resolution of {approx}0.2 arc seconds and operate at a cadence of {approx}5 seconds or less, having a mass that is about 1/4 that of one of the 20 cm aperture telescopes on the Atmospheric Imaging Assembly (AIA) instrument aboard NASA's Solar Dynamics Observatory (SDO). This new instrument technology thus serves as a path finder to a post-AIA, Explorer-class missions.

  2. Short range, ultra-wideband radar with high resolution swept range gate

    DOE Patents [OSTI]

    McEwan, T.E.

    1998-05-26

    A radar range finder and hidden object locator is based on ultra-wide band radar with a high resolution swept range gate. The device generates an equivalent time amplitude scan with a typical range of 4 inches to 20 feet, and an analog range resolution as limited by a jitter of on the order of 0.01 inches. A differential sampling receiver is employed to effectively eliminate ringing and other aberrations induced in the receiver by the near proximity of the transmit antenna, so a background subtraction is not needed, simplifying the circuitry while improving performance. Uses of the invention include a replacement of ultrasound devices for fluid level sensing, automotive radar, such as cruise control and parking assistance, hidden object location, such as stud and rebar finding. Also, this technology can be used when positioned over a highway lane to collect vehicle count and speed data for traffic control. 14 figs.

  3. Short range, ultra-wideband radar with high resolution swept range gate

    DOE Patents [OSTI]

    McEwan, Thomas E. (Livermore, CA)

    1998-05-26

    A radar range finder and hidden object locator is based on ultra-wide band radar with a high resolution swept range gate. The device generates an equivalent time amplitude scan with a typical range of 4 inches to 20 feet, and an analog range resolution as limited by a jitter of on the order of 0.01 inches. A differential sampling receiver is employed to effectively eliminate ringing and other aberrations induced in the receiver by the near proximity of the transmit antenna, so a background subtraction is not needed, simplifying the circuitry while improving performance. Uses of the invention include a replacement of ultrasound devices for fluid level sensing, automotive radar, such as cruise control and parking assistance, hidden object location, such as stud and rebar finding. Also, this technology can be used when positioned over a highway lane to collect vehicle count and speed data for traffic control.

  4. [S IV] IN THE NGC 5253 SUPERNEBULA: IONIZED GAS KINEMATICS AT HIGH RESOLUTION

    SciTech Connect (OSTI)

    Beck, Sara C.; Lacy, John H.; Turner, Jean L.; Kruger, Andrew; Richter, Matt; Crosthwaite, Lucian P.

    2012-08-10

    The nearby dwarf starburst galaxy NGC 5253 hosts a deeply embedded radio-infrared supernebula excited by thousands of O stars. We have observed this source in the 10.5 {mu}m line of S{sup +3} at 3.8 km s{sup -1} spectral and 1.''4 spatial resolution, using the high-resolution spectrometer TEXES on the IRTF. The line profile cannot be fit well by a single Gaussian. The best simple fit describes the gas with two Gaussians, one near the galactic velocity with FWHM 33.6 km s{sup -1} and another of similar strength and FWHM 94 km s{sup -1} centered {approx}20 km s{sup -1} to the blue. This suggests a model for the supernebula in which gas flows toward us out of the molecular cloud, as in a 'blister' or 'champagne flow' or in the H II regions modelled by Zhu.

  5. Following Dynamic Processes by X-ray Tomographic Microscopy with Sub-second Temporal Resolution

    SciTech Connect (OSTI)

    Mokso, R.; Marone, F.; Mikuljan, G.; Isenegger, A.; Haberthuer, D.; Schittny, J. C.; Stampanoni, M.

    2011-09-09

    Several non-destructive imaging techniques offer the possibility to observe rapid phenomena in real time, yet most of these techniques fail when it comes to bulky samples and micrometer precision in three dimensions. Therefore there is clearly a need to develop approaches that address such conditions. We identified the large potential that lies in synchrotron-based x-rays as a probe and developed a direct-space tomographic instrument suitable to provide sub-second temporal resolution with several-micrometers spatial resolution. Selected applications from the field of biology and material science are shown in order to demonstrate the unique capabilities in generating three-dimensional images with very high quality making image segmentation and analysis possible for samples that could, until now, only be studied in two dimensions due to the occurrence of rapid structural changes.

  6. Superconducting gamma and fast-neutron spectrometers with high energy resolution

    DOE Patents [OSTI]

    Friedrich, Stephan (San Jose, CA); , Niedermayr, Thomas R. (Oakland, CA); Labov, Simon E. (Berkeley, CA)

    2008-11-04

    Superconducting Gamma-ray and fast-neutron spectrometers with very high energy resolution operated at very low temperatures are provided. The sensor consists of a bulk absorber and a superconducting thermometer weakly coupled to a cold reservoir, and determines the energy of the incident particle from the rise in temperature upon absorption. A superconducting film operated at the transition between its superconducting and its normal state is used as the thermometer, and sensor operation at reservoir temperatures around 0.1 K reduces thermal fluctuations and thus enables very high energy resolution. Depending on the choice of absorber material, the spectrometer can be configured either as a Gamma-spectrometer or as a fast-neutron spectrometer.

  7. High-order multilayer coated blazed gratings for high resolution soft x-ray spectroscopy

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

    Voronov, Dmitriy L.; Goray, Leonid I.; Warwick, Tony; Yashchuk, Valeriy V.; Padmore, Howard A.

    2015-02-17

    A grand challenge in soft x-ray spectroscopy is to drive the resolving power of monochromators and spectrometers from the 104 achieved routinely today to well above 105. This need is driven mainly by the requirements of a new technique that is set to have enormous impact in condensed matter physics, Resonant Inelastic X-ray Scattering (RIXS). Unlike x-ray absorption spectroscopy, RIXS is not limited by an energy resolution dictated by the core-hole lifetime in the excitation process. Using much higher resolving power than used for normal x-ray absorption spectroscopy enables access to the energy scale of soft excitations in matter. Thesemoreexcitations such as magnons and phonons drive the collective phenomena seen in correlated electronic materials such as high temperature superconductors. RIXS opens a new path to study these excitations at a level of detail not formerly possible. However, as the process involves resonant excitation at an energy of around 1 keV, and the energy scale of the excitations one would like to see are at the meV level, to fully utilize the technique requires the development of monochromators and spectrometers with one to two orders of magnitude higher energy resolution than has been conventionally possible. Here we investigate the detailed diffraction characteristics of multilayer blazed gratings. These elements offer potentially revolutionary performance as the dispersive element in ultra-high resolution x-ray spectroscopy. In doing so, we have established a roadmap for the complete optimization of the grating design. Traditionally 1st order gratings are used in the soft x-ray region, but we show that as in the optical domain, one can work in very high spectral orders and thus dramatically improve resolution without significant loss in efficiency.less

  8. D&D Toolbox Robotic Deployment of High Resolution Laser Imaging for Characterization

    Office of Environmental Management (EM)

    Tech Stage: Demonstration D&D Toolbox: Project OR-071203, OR-071303; Deployed at SRS P Reactor Area Closure Project PBS SR-0040 The robotically deployed laser surveying system was demonstrated in the Purification room of SRS P-Reactor on September 24, 2008. Page 1 of 2 Savannah River Site South Carolina Michigan D&D Toolbox Robotic Deployment of High Resolution Laser Imaging for Characterization Challenge The characterization of complex and/or hazardous facilities for the purposes of

  9. Real-Time High Resolution Quantitative Imaging by Three Wavelength Digital

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

    Holography - Energy Innovation Portal Real-Time High Resolution Quantitative Imaging by Three Wavelength Digital Holography Oak Ridge National Laboratory Contact ORNL About This Technology Technology Marketing Summary An optical system capable of reproducing three-dimensional images was invented at ORNL. This system can detect height changes of a few nanometers or less and render clear, single shot images. These types of precise, high speed measurements are important for a variety of

  10. Quantitative metrics for assessment of chemical image quality and spatial resolution

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

    Kertesz, Vilmos; Cahill, John F.; Van Berkel, Gary J.

    2016-02-28

    Rationale: Currently objective/quantitative descriptions of the quality and spatial resolution of mass spectrometry derived chemical images are not standardized. Development of these standardized metrics is required to objectively describe chemical imaging capabilities of existing and/or new mass spectrometry imaging technologies. Such metrics would allow unbiased judgment of intra-laboratory advancement and/or inter-laboratory comparison for these technologies if used together with standardized surfaces. Methods: We developed two image metrics, viz., chemical image contrast (ChemIC) based on signal-to-noise related statistical measures on chemical image pixels and corrected resolving power factor (cRPF) constructed from statistical analysis of mass-to-charge chronograms across features of interest inmorean image. These metrics, quantifying chemical image quality and spatial resolution, respectively, were used to evaluate chemical images of a model photoresist patterned surface collected using a laser ablation/liquid vortex capture mass spectrometry imaging system under different instrument operational parameters. Results: The calculated ChemIC and cRPF metrics determined in an unbiased fashion the relative ranking of chemical image quality obtained with the laser ablation/liquid vortex capture mass spectrometry imaging system. These rankings were used to show that both chemical image contrast and spatial resolution deteriorated with increasing surface scan speed, increased lane spacing and decreasing size of surface features. Conclusions: ChemIC and cRPF, respectively, were developed and successfully applied for the objective description of chemical image quality and spatial resolution of chemical images collected from model surfaces using a laser ablation/liquid vortex capture mass spectrometry imaging system.less

  11. LandScan 2014 High-Resolution Global Population Data Set

    Energy Science and Technology Software Center (OSTI)

    2015-01-01

    The LandScan data set is a worldwide population database compiled on a 30" X 30" latitude/longitude grid. Census counts (at sub-national level) were apportioned to each grid cell based on likelihood coefficients, which are based on land cover, slope, road proximity, high-resolution imagery, and other data sets. The LandScan data set was developed as part of Oak Ridge National Laboratory (ORNL) Global Population Project for estimating ambient populations at risk.

  12. High-resolution Soft-RIXS: Scientific Goals and Technical Challenges |

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

    Stanford Synchrotron Radiation Lightsource High-resolution Soft-RIXS: Scientific Goals and Technical Challenges Tuesday, November 22, 2011 - 3:30pm SSRL Conference Room 137-322 Giacomo Ghiringhelli, CNR/SPIN and Dipartimento di Fisica, Politecnico di Milano, Italy Visiting scholar at SIMES-Department of physics, Stanford University The interest in resonant inelastic soft x-ray scattering has been recently boosted mainly by results on high Tc superconductors and other cuprates, where orbital

  13. Atomic-Resolution Spectroscopic Imaging and In Situ Environmental Study of

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

    Bimetallic Nanocatalysts by Fast Electrons | Stanford Synchrotron Radiation Lightsource Atomic-Resolution Spectroscopic Imaging and In Situ Environmental Study of Bimetallic Nanocatalysts by Fast Electrons Thursday, October 24, 2013 - 3:30pm SLAC, Conference Room 137-322 Presented by Huolin Xin Center for Functional Nanomaterials Brookhaven National Laboratory, Upton, New York Scanning transmission electron microscopy (STEM) in combination with electron energy loss spectroscopy (EELS) has

  14. Technique to quantitatively measure magnetic properties of thin structures at <10 NM spatial resolution

    DOE Patents [OSTI]

    Bajt, Sasa

    2003-07-08

    A highly sensitive and high resolution magnetic microscope images magnetic properties quantitatively. Imaging is done with a modified transmission electron microscope that allows imaging of the sample in a zero magnetic field. Two images from closely spaced planes, one in focus and one slightly out of focus, are sufficient to calculate the absolute values of the phase change imparted to the electrons, and hence obtain the magnetization vector field distribution.

  15. Small Business Regulatory Enforcement Fairness Act Download | Department of

    Energy Savers [EERE]

    Energy Small Business Regulatory Enforcement Fairness Act Download Small Business Regulatory Enforcement Fairness Act Download PDF icon Attachment-1-1-Non-Retaliation-Policy-Internal.pdf PDF icon ONO-SBA-Report-to-Congress-2014.pdf More Documents & Publications The Role of Ombudsmen in Dispute Resolution Human Capital: The Role of Ombudsmen in Dispute Resolution Microsoft Word - Cover Letter Regulatory Burden RFI 4-15-11

  16. Analysis of high-resolution spectra from a hybrid interferometric/dispersive spectrometer

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

    Ko, Phyllis; Scott, Jill R.; Jovanovic, Igor

    2015-09-05

    To fully take advantage of a low-cost, small footprint hybrid interferometric/dispersive spectrometer, a math- ematical reconstruction technique was developed to accurately capture the high-resolution and relative peak intensities from complex patterns. A Fabry-Perot etalon was coupled to a Czerny-Turner spectrometer, in- creasing spectral resolution by an order of magnitude without the commensurate increase in spectrometer size. Measurement of the industry standard Hg 313.1555/313.1844 nm doublet yielded a ratio of 0.682 with 1.8%error, which agreed well with an independent measurement and literature values. The doublet separation (29 pm), is similar to the U isotope shift (25 pm) at 424.437 nm thatmore » is of interest to monitoring nuclear nonpro-liferation activities. Additionally, the technique was applied to a LIBS measurement of the mineral cinnabar (HgS) and resulted in a ratio of 0.681. This reconstruction method could enable significantly smaller, portable high-resolution instruments with isotopic specificity, benefiting a variety of spectroscopic applications.« less

  17. Statistical Projections for Multi-resolution, Multi-dimensional Visual Data Exploration and Analysis

    SciTech Connect (OSTI)

    Hoa T. Nguyen; Stone, Daithi; E. Wes Bethel

    2016-01-01

    An ongoing challenge in visual exploration and analysis of large, multi-dimensional datasets is how to present useful, concise information to a user for some specific visualization tasks. Typical approaches to this problem have proposed either reduced-resolution versions of data, or projections of data, or both. These approaches still have some limitations such as consuming high computation or suffering from errors. In this work, we explore the use of a statistical metric as the basis for both projections and reduced-resolution versions of data, with a particular focus on preserving one key trait in data, namely variation. We use two different case studies to explore this idea, one that uses a synthetic dataset, and another that uses a large ensemble collection produced by an atmospheric modeling code to study long-term changes in global precipitation. The primary findings of our work are that in terms of preserving the variation signal inherent in data, that using a statistical measure more faithfully preserves this key characteristic across both multi-dimensional projections and multi-resolution representations than a methodology based upon averaging.

  18. Towards Direct Simulation of Future Tropical Cyclone Statistics in a High-Resolution Global Atmospheric Model

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

    Wehner, Michael F.; Bala, G.; Duffy, Phillip; Mirin, Arthur A.; Romano, Raquel

    2010-01-01

    We present a set of high-resolution global atmospheric general circulation model (AGCM) simulations focusing on the model's ability to represent tropical storms and their statistics. We find that the model produces storms of hurricane strength with realistic dynamical features. We also find that tropical storm statistics are reasonable, both globally and in the north Atlantic, when compared to recent observations. The sensitivity of simulated tropical storm statistics to increases in sea surface temperature (SST) is also investigated, revealing that a credible late 21st century SST increase produced increases in simulated tropical storm numbers and intensities in all ocean basins. Whilemore » this paper supports previous high-resolution model and theoretical findings that the frequency of very intense storms will increase in a warmer climate, it differs notably from previous medium and high-resolution model studies that show a global reduction in total tropical storm frequency. However, we are quick to point out that this particular model finding remains speculative due to a lack of radiative forcing changes in our time-slice experiments as well as a focus on the Northern hemisphere tropical storm seasons.« less

  19. Spatial disaggregation of satellite-derived irradiance using a high-resolution digital elevation model

    SciTech Connect (OSTI)

    Ruiz-Arias, Jose A.; Tovar-Pescador, Joaquin; Cebecauer, Tomas; Suri, Marcel

    2010-09-15

    Downscaling of the Meteosat-derived solar radiation ({proportional_to}5 km grid resolution) is based on decomposing the global irradiance and correcting the systematic bias of its components using the elevation and horizon shadowing that are derived from the SRTM-3 digital elevation model (3 arc sec resolution). The procedure first applies the elevation correction based on the difference between coarse and high spatial resolution. Global irradiance is split into direct, diffuse circumsolar and diffuse isotropic components using statistical models, and then corrections due to terrain shading and sky-view fraction are applied. The effect of reflected irradiance is analysed only in the theoretical section. The method was applied in the eastern Andalusia, Spain, and the validation was carried out for 22 days on April, July and December 2006 comparing 15-min estimates of the satellite-derived solar irradiance and observations from nine ground stations. Overall, the corrections of the satellite estimates in the studied region strongly reduced the mean bias of the estimates for clear and cloudy days from roughly 2.3% to 0.4%. (author)

  20. High-Resolution Structure of the Photosynthetic Mn4Ca Catalyst from X-ray Spectroscopy

    SciTech Connect (OSTI)

    Yachandra, Vittal; Yano, Junko; Kern, Jan; Pushkar, Yulia; Sauer, Kenneth; Glatzel, Pieter; Bergmann, Uwe; Messinger, Johannes; Zouni, Athina; Yachandra, Vittal K.

    2007-08-01

    The application of high-resolution X-ray spectroscopy methods to study the photosynthetic water oxidizing complex, which contains a unique hetero-nuclear catalytic Mn4Ca cluster, are described. Issues of X-ray damage especially at the metal sites in the Mn4Ca cluster are discussed. The structure of the Mn4Ca catalyst at high-resolution which has so far eluded attempts of determination by X-ray diffraction, EXAFS and other spectroscopic techniques has been addressed using polarized EXAFS techniques applied to oriented PS II membrane preparations and PS II single crystals. A review of how the resolution of traditional EXAFS techniques can be improved, using methods such as range-extended EXAFS is presented, and the changes that occur in the structure of the cluster as it advances through the catalytic cycle are described. X-ray absorption and emission techniques (XANES and K? emission) have been used earlier to determine the oxidation states of the Mn4Ca cluster, and in this report we review the use of X-ray resonant Raman spectroscopy to understand the electronic structure of the Mn4Ca cluster as it cycles through the intermediate S-states.

  1. Regulatory analysis for the resolution of Unresolved Safety Issue A-44, Station Blackout. Draft report

    SciTech Connect (OSTI)

    Rubin, A.M.

    1986-01-01

    ''Station Blackout'' is the complete loss of alternating current (ac) electric power to the essential and nonessential buses in a nuclear power plant; it results when both offsite power and the onsite emergency ac power systems are unavailable. Because many safety systems required for reactor core decay heat removal and containment heat removal depend on ac power, the consequences of a station blackout could be severe. Because of the concern about the frequency of loss of offsite power, the number of failures of emergency diesel generators, and the potentially severe consequences of a loss of all ac power, ''Station Blackout'' was designated as Unresolved Safety Issue (USI) A-44. This report presents the regulatory analysis for USI A-44. It includes: (1) a summary of the issue, (2) the proposed technical resolution, (3) alternative resolutions considered by the Nuclear Regulatory Commission (NRC) staff, (4) an assessment of the benefits and costs of the recommended resolution, (5) the decision rationale, and (6) the relationship between USI A-44 and other NRC programs and requirements.

  2. Method for improving the angular resolution of a neutron scatter camera

    DOE Patents [OSTI]

    Mascarenhas, Nicholas; Marleau, Peter; Gerling, Mark; Cooper, Robert Lee; Mrowka, Stanley; Brennan, James S.

    2012-12-25

    An instrument that will directly image the fast fission neutrons from a special nuclear material source wherein the neutron detection efficiency is increased has been described. Instead of the previous technique that uses a time-of-flight (TOF) between 2 widely spaced fixed planes of neutron detectors to measure scatter neutron kinetic energy, we now use the recoil proton energy deposited in the second of the 2 scatter planes which can now be repositioned either much closer together or further apart. However, by doubling the separation distance between the 2 planes from 20 cm to a distance of 40 cm we improved the angular resolution of the detector from about 12.degree. to about 10.degree.. A further doubling of the separation distance to 80 cm provided an addition improvement in angular resolution of the detector to about 6.degree. without adding additional detectors or ancillary electronics. The distance between planes also may be dynamically changed using a suitable common technique such as a gear- or motor-drive to toggle between the various positions. The angular resolution of this new configuration, therefore, is increased at the expanse of detection sensitivity. However, the diminished sensitivity may be acceptable for those applications where the detector is able to interrogate a particular site for an extended period.

  3. Identification and Resolution of Safety Issues for the Advanced Integral Type PWR

    SciTech Connect (OSTI)

    Kim, Woong Sik; Jo, Jong Chull; Yune, Young Gill; Kim, Hho Jung

    2004-07-01

    This paper presents the interim results of a study on the identification and resolution of safety issues for the AIPWR licensing. The safety issues discussed in this paper include (1) policy issues for which decision-makings are needed for the procedural requirements of licensing system in the regulatory policy point of view, (2) technical issues for which either development of new requirements or amendment of some existing requirements is needed, or (3) other technical issues for which safety verifications are required. The study covers (a) the assessment of applicability of the issues identified from the previous studies to the case of the AIPWR, (b) identification of safety issues through analysis of the international experiences in the design and licensing of advanced reactors, and technical review of the AIPWR design, and (c) development of the resolutions of safety issues, and application of the resolutions to the amendment of regulatory requirements and the licensing review of the AIPWR. As the results of this study, a total of twenty eight safety issues was identified: fourteen issues from the previous studies, including the establishment of design safety goals; four issues from the foreign practices and experiences, including the risk-informed licensing; and ten issues by the AIPWR design review, including reliability of passive safety systems. Ten issues of them have been already resolved and the succeeding study is under way to resolve the remaining ones. (authors)

  4. Structure of the SH3 domain of human osteoclast-stimulating factor at atomic resolution

    SciTech Connect (OSTI)

    Chen, Liqing Wang, Yujun; Wells, David; Toh, Diana; Harold, Hunt; Zhou, Jing; DiGiammarino, Enrico; Meehan, Edward J.

    2006-09-01

    The crystal structure of the SH3 domain of human osteoclast-stimulating factor has been determined and refined to the ultrahigh resolution of 1.07 . The structure at atomic resolution provides an accurate framework for structure-based design of its inhibitors. Osteoclast-stimulating factor (OSF) is an intracellular signaling protein, produced by osteoclasts themselves, that enhances osteoclast formation and bone resorption. It is thought to act via an Src-related signaling pathway and contains SH3 and ankyrin-repeat domains which are involved in proteinprotein interactions. As part of a structure-based anti-bone-loss drug-design program, the atomic resolution X-ray structure of the recombinant human OSF SH3 domain (hOSF-SH3) has been determined. The domain, residues 1272, yielded crystals that diffracted to the ultrahigh resolution of 1.07 . The overall structure shows a characteristic SH3 fold consisting of two perpendicular ?-sheets that form a ?-barrel. Structure-based sequence alignment reveals that the putative proline-rich peptide-binding site of hOSF-SH3 consists of (i) residues that are highly conserved in the SH3-domain family, including residues Tyr21, Phe23, Trp49, Pro62, Asn64 and Tyr65, and (ii) residues that are less conserved and/or even specific to hOSF, including Thr22, Arg26, Thr27, Glu30, Asp46, Thr47, Asn48 and Leu60, which might be key to designing specific inhibitors for hOSF to fight osteoporosis and related bone-loss diseases. There are a total of 13 well defined water molecules forming hydrogen bonds with the above residues in and around the peptide-binding pocket. Some of those water molecules might be important for drug-design approaches. The hOSF-SH3 structure at atomic resolution provides an accurate framework for structure-based design of its inhibitors.

  5. The effect of horizontal resolution on simulation quality in the Community Atmospheric Model, CAM5.1

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

    Wehner, Michael F.; Reed, Kevin A.; Li, Fuyu; Prabhat, -; Bacmeister, Julio; Chen, Cheng -Ta; Paciorek, Christopher; Gleckler, Peter J.; Sperber, Kenneth R.; Collins, William D.; et al

    2014-11-05

    We present an analysis of version 5.1 of the Community Atmospheric Model (CAM5.1) at a high horizontal resolution. Intercomparison of this global model at approximately 0.25°, 1°, and 2° is presented for extreme daily precipitation as well as for a suite of seasonal mean fields. In general, extreme precipitation amounts are larger in high resolution than in lower-resolution configurations. In many but not all locations and/or seasons, extreme daily precipitation rates in the high-resolution configuration are higher and more realistic. The high-resolution configuration produces tropical cyclones up to category 5 on the Saffir-Simpson scale and a comparison to observations revealsmore » both realistic and unrealistic model behavior. In the absence of extensive model tuning at high resolution, simulation of many of the mean fields analyzed in this study is degraded compared to the tuned lower-resolution public released version of the model.« less

  6. Characterization of spatially resolved high resolution x-ray spectrometers for high energy density physics and light source experiments

    SciTech Connect (OSTI)

    Hill, K. W. Bitter, M.; Delgado-Aparacio, L.; Efthimion, P.; Pablant, N. A.; Lu, J.; Beiersdorfer, P.; Chen, H.; Magee, E.

    2014-11-15

    A high resolution 1D imaging x-ray spectrometer concept comprising a spherically bent crystal and a 2D pixelated detector is being optimized for diagnostics of small sources such as high energy density physics (HEDP) and synchrotron radiation or x-ray free electron laser experiments. This instrument is used on tokamak experiments for Doppler measurements of ion temperature and plasma flow velocity profiles. Laboratory measurements demonstrate a resolving power, E/?E of order 10?000 and spatial resolution better than 10 ?m. Initial tests of the high resolution instrument on HEDP plasmas are being performed.

  7. High-resolution spectroscopy of 2s1/2 - 2p3/2 transitions in W^65+ through

    Office of Scientific and Technical Information (OSTI)

    W^71+ (Journal Article) | SciTech Connect High-resolution spectroscopy of 2s1/2 - 2p3/2 transitions in W^65+ through W^71+ Citation Details In-Document Search Title: High-resolution spectroscopy of 2s1/2 - 2p3/2 transitions in W^65+ through W^71+ A high-resolution flat-crystal spectrometer was used on the SuperEBIT electron beam ion trap to measure the energies of the 2s{sub 1/2} - 2p{sub 3/2} transitions in lithiumlike through fluorine-like tungsten. These transitions are strongly affected

  8. Enhancement of the resolution of full-field optical coherence tomography by using a colour image sensor

    SciTech Connect (OSTI)

    Kalyanov, A L; Lychagov, V V; Smirnov, I V; Ryabukho, V P [N.G. Chernyshevsky Saratov State University, Saratov (Russian Federation)

    2013-08-31

    The influence of white balance in a colour image detector on the resolution of a full-field optical coherence tomograph (FFOCT) is studied. The change in the interference pulse width depending on the white balance tuning is estimated in the cases of a thermal radiation source (incandescent lamp) and a white light emitting diode. It is shown that by tuning white balance of the detector in a certain range, the FFOCT resolution can be increased by 20 % as compared to the resolution, attained with the use of a monochrome detector. (optical coherence tomography)

  9. SIEMENS ADVANCED QUANTRA FTICR MASS SPECTROMETER FOR ULTRA HIGH RESOLUTION AT LOW MASS

    SciTech Connect (OSTI)

    Spencer, W; Laura Tovo, L

    2008-07-08

    The Siemens Advanced Quantra Fourier Transform Ion Cyclotron Resonance (FTICR) mass spectrometer was evaluated as an alternative instrument to large double focusing mass spectrometers for gas analysis. High resolution mass spectrometers capable of resolving the common mass isomers of the hydrogen isotopes are used to provide data for accurate loading of reservoirs and to monitor separation of tritium, deuterium, and helium. Conventional double focusing magnetic sector instruments have a resolution that is limited to about 5000. The Siemens FTICR instrument achieves resolution beyond 400,000 and could possibly resolve the tritium ion from the helium-3 ion, which differ by the weight of an electron, 0.00549 amu. Working with Y-12 and LANL, SRNL requested Siemens to modify their commercial Quantra system for low mass analysis. To achieve the required performance, Siemens had to increase the available waveform operating frequency from 5 MHz to 40 MHz and completely redesign the control electronics and software. However, they were able to use the previous ion trap, magnet, passive pump, and piezo-electric pulsed inlet valve design. NNSA invested $1M in this project and acquired four systems, two for Y-12 and one each for SRNL and LANL. Siemens claimed a $10M investment in the Quantra systems. The new Siemens Advanced Quantra demonstrated phenomenal resolution in the low mass range. Resolution greater than 400,000 was achieved for mass 2. The new spectrometer had a useful working mass range to 500 Daltons. However, experiments found that a continuous single scan from low mass to high was not possible. Two useful working ranges were established covering masses 1 to 6 and masses 12 to 500 for our studies. A compromise performance condition enabled masses 1 to 45 to be surveyed. The instrument was found to have a dynamic range of about three orders of magnitude and quantitative analysis is expected to be limited to around 5 percent without using complex fitting algorithms. Analysis of low concentration ions, at the ppm level, required a separate analysis using ion ejection techniques. Chemical ionization due to the formation of the MH{sup +} ion or MD{sup +} increased the complexity of the spectra compared to magnetic sector mass spectra and formation of the protonated or deuterated complex was a dynamic function of the trap ion concentration. This made quantitative measurement more of a challenge. However, the resolution of the instrument was far superior to any other mass spectrometry technique that has been applied to the analysis of the hydrogen isotopes. The piezo-electric picoliter injection device offers a new way of submitting small quantities of atmospheric pressure sample gas for analysis. The new software had many improvements over the previous version but significant flaws in the beta codes remain that make the prototype units less than ideal. The instrument is a promising new technology that experience will likely improve. Unfortunately, Siemens has concluded that the technology will not be a commercial success and has decided to stop producing this product.

  10. Beam collimation with polycapillary x-ray optics for high contrast high resolution monochromatic imaging

    SciTech Connect (OSTI)

    Sugiro, Francisca R.; Li Danhong; MacDonald, C.A.

    2004-12-01

    Monochromatic imaging can provide better contrast and resolution than conventional broadband radiography. In broadband systems, low energy photons do not contribute to the image, but are merely absorbed, while high energy photons produce scattering that degrades the image. By tuning to the optimal energy, one can eliminate undesirable lower and higher energies. Monochromatization is achieved by diffraction from a single crystal. A crystal oriented to diffract at a particular energy, in this case the characteristic line energy, diffracts only those photons within a narrow range of angles. The resultant beam from a divergent source is nearly parallel, but not very intense. To increase the intensity, collimation was performed with polycapillary x-ray optics, which can collect radiation from a divergent source and redirect it into a quasi parallel beam. Contrast and resolution measurements were performed with diffracting crystals with both high and low angular acceptance. Testing was first done at 8 keV with an intense copper rotating anode x-ray source, then 17.5 keV measurements were made with a low power molybdenum source. At 8 keV, subject contrast was a factor of five higher than for the polychromatic case. At 17.5 keV, monochromatic contrast was two times greater than the conventional polychromatic contrast. The subject contrasts measured at both energies were in good agreement with theory. An additional factor of two increase in contrast, for a total gain of four, is expected at 17.5 keV from the removal of scatter. Scatter might be simply removed using an air gap, which does not degrade resolution with a parallel beam.

  11. High Resolution BPM Upgrade for the ATF Damping Ring at KEK

    SciTech Connect (OSTI)

    Eddy, N.; Briegel, C.; Fellenz, B.; Gianfelice-Wendt, E.; Prieto, P.; Rechenmacher, R.; Semenov, A.; Voy, D.; Wendt, M.; Zhang, D.; Terunuma, N.; /KEK, Tsukuba

    2011-08-17

    A beam position monitor (BPM) upgrade at the KEK Accelerator Test Facility (ATF) damping ring has been accomplished, carried out by a KEK/FNAL/SLAC collaboration under the umbrella of the global ILC R&D effort. The upgrade consists of a high resolution, high reproducibility read-out system, based on analog and digital down-conversion techniques, digital signal processing, and also implements a new automatic gain error correction schema. The technical concept and realization as well as results of beam studies are presented. The next generation of linear colliders require ultra-low vertical emittance of <2 pm-rad. The damping ring at the KEK Accelerator Test Facility (ATF) is designed to demonstrate this mission critical goal. A high resolution beam position monitor (BPM) system for the damping ring is one of the key tools for realizing this goal. The BPM system needs to provide two distnict measurements. First, a very high resolution ({approx}100-200nm) closed-orbit measurement which is averaged over many turns and realized with narrowband filter techniques - 'narrowband mode'. This is needed to monitor and steer the beam along an optimum orbit and to facilitate beam-based alignment to minimize non-linear field effects. Second, is the ability to make turn by turn (TBT) measurements to support optics studies and corrections necessary to achieve the design performance. As the TBT measurement necessitates a wider bandwidth, it is often referred to as 'wideband mode'. The BPM upgrade was initiated as a KEK/SLAC/FNAL collaboration in the frame of the Global Design Initiative of the International Linear Collider. The project was realized and completed using Japan-US funds with Fermilab as the core partner.

  12. design a high-resolution diagnostic system for the National Ignition

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

    Facility | Princeton Plasma Physics Lab design a high-resolution diagnostic system for the National Ignition Facility By John Greenwald November 16, 2015 Tweet Widget Google Plus One Share on Facebook Kenneth Hill and Manfred Bitter inspect an X-ray crystal spectrometer to be used to study OMEGA EP laser-produced plasmas. (Photo by Elle Starkman/Office of Communications) Kenneth Hill and Manfred Bitter inspect an X-ray crystal spectrometer to be used to study OMEGA EP laser-produced plasmas.

  13. Controlling bimetallic nanostructures by the microemulsion method with subnanometer resolution using a prediction model

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

    Buceta, David; Tojo, Concha; Vukmirovic, Miomir B.; Deepak, F. Leonard; Lopez-Quintela, M. Arturo

    2015-06-02

    In this study, we present a theoretical model to predict the atomic structure of Au/Pt nanoparticles synthesized in microemulsions. Excellent concordance with the experimental results shows that the structure of the nanoparticles can be controlled at sub-nanometer resolution simply by changing the reactants concentration. The results of this study not only offer a better understanding of the complex mechanisms governing reactions in microemulsions, but open up a simple new way to synthesize bimetallic nanoparticles with ad-hoc controlled nanostructures.

  14. Structure of the Complete 70S Ribosome at 3.7 Å Resolution

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

    Structure of the Complete 70S Ribosome at 3.7 Å Resolution Print Ribosomes are RNA-based protein factories found in all living cells, responsible for translating the genetic information encoded in messenger RNA (mRNA) into proteins. The first x-ray structures of the complete 70S ribosome were determined in 1999 at 7.8 Å and in 2001 at 5.5 Å, using diffraction data collected at ALS Beamline 5.0.2. These structures showed how the ribosomal RNA and the more than 50 ribosomal proteins are

  15. Structure of the Complete 70S Ribosome at 3.7 Å Resolution

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

    Structure of the Complete 70S Ribosome at 3.7 Å Resolution Print Ribosomes are RNA-based protein factories found in all living cells, responsible for translating the genetic information encoded in messenger RNA (mRNA) into proteins. The first x-ray structures of the complete 70S ribosome were determined in 1999 at 7.8 Å and in 2001 at 5.5 Å, using diffraction data collected at ALS Beamline 5.0.2. These structures showed how the ribosomal RNA and the more than 50 ribosomal proteins are

  16. Structure of the Complete 70S Ribosome at 3.7 Å Resolution

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

    Structure of the Complete 70S Ribosome at 3.7 Å Resolution Print Ribosomes are RNA-based protein factories found in all living cells, responsible for translating the genetic information encoded in messenger RNA (mRNA) into proteins. The first x-ray structures of the complete 70S ribosome were determined in 1999 at 7.8 Å and in 2001 at 5.5 Å, using diffraction data collected at ALS Beamline 5.0.2. These structures showed how the ribosomal RNA and the more than 50 ribosomal proteins are

  17. Structure of the Complete 70S Ribosome at 3.7 Å Resolution

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

    of the Complete 70S Ribosome at 3.7 Å Resolution Print Ribosomes are RNA-based protein factories found in all living cells, responsible for translating the genetic information encoded in messenger RNA (mRNA) into proteins. The first x-ray structures of the complete 70S ribosome were determined in 1999 at 7.8 Å and in 2001 at 5.5 Å, using diffraction data collected at ALS Beamline 5.0.2. These structures showed how the ribosomal RNA and the more than 50 ribosomal proteins are organized to form

  18. High-resolution electron-ion coincidence spectroscopy of ethanol in intense laser fields

    SciTech Connect (OSTI)

    Hatamoto, T.; Pruemper, G.; Okunishi, M.; Ueda, K.; Mathur, D.

    2007-06-15

    High-resolution electron-ion coincidence spectroscopy is used to (i) map correlations between electrons and ions from atomlike ionization of ethanol by intense 400 and 800 nm light pulses and (ii) disentangle the effects of dissociative multiphoton (MPI) and tunneling (TI) ionization. Electron spectra correlated with C{sup n+} (n=1,2,3) exhibit a continuum structure with a high-energy tail due to inelastic collisions involving rescattered electrons following TI, while those correlated with C{sub 2}H{sub n}O{sup +} have structure characteristic of MPI and above-threshold ionization.

  19. Super-resolution with a positive epsilon multi-quantum-well super-lens

    SciTech Connect (OSTI)

    Bak, A. O.; Giannini, V.; Maier, S. A.; Phillips, C. C.

    2013-12-23

    We design an anisotropic and dichroic quantum metamaterial that is able to achieve super-resolution without the need for a negative permittivity. When exploring the parameters of the structure, we take into account the limits of semiconductor fabrication technology based on quantum well stacks. By heavily doping the structure with free electrons, we infer an anisotropic effective medium with a prolate ellipsoid dispersion curve which allows for near-diffractionless propagation of light (similar to an epsilon-near-zero hyperbolic lens). This, coupled with low absorption, allows us to resolve images at the sub-wavelength scale at distances 6?times greater than equivalent natural materials.

  20. Magnetic lens apparatus for a low-voltage high-resolution electron microscope

    DOE Patents [OSTI]

    Crewe, Albert V. (Palos Park, IL)

    1996-01-01

    A lens apparatus in which a beam of charged particles of low accelerating voltage is brought to a focus by a magnetic field, the lens being situated behind the target position. The lens comprises an electrically-conducting coil arranged around the axis of the beam and a magnetic pole piece extending along the axis of the beam at least within the space surrounded by the coil. The lens apparatus comprises the sole focusing lens for high-resolution imaging in a low-voltage scanning electron microscope.

  1. Dynamic frequency-domain interferometer for absolute distance measurements with high resolution

    SciTech Connect (OSTI)

    Weng, Jidong; Liu, Shenggang; Ma, Heli; Tao, Tianjiong; Wang, Xiang; Liu, Cangli; Tan, Hua

    2014-11-15

    A unique dynamic frequency-domain interferometer for absolute distance measurement has been developed recently. This paper presents the working principle of the new interferometric system, which uses a photonic crystal fiber to transmit the wide-spectrum light beams and a high-speed streak camera or frame camera to record the interference stripes. Preliminary measurements of harmonic vibrations of a speaker, driven by a radio, and the changes in the tip clearance of a rotating gear wheel show that this new type of interferometer has the ability to perform absolute distance measurements both with high time- and distance-resolution.

  2. Measuring charge carrier mobility in photovoltaic devices with micron-scale resolution

    SciTech Connect (OSTI)

    Ashraf, A.; Dissanayake, D. M. N. M.; Eisaman, M. D.

    2015-03-16

    We present a charge-extraction technique, micron-scale charge extraction by linearly increasing voltage, which enables simultaneous spatially resolved measurements of charge carrier mobility and photocurrent in thin-film photovoltaic devices with micron-scale resolution. An intensity-modulated laser with beam diameter near the optical diffraction limit is scanned over the device, while a linear voltage ramp in reverse bias is applied at each position of illumination. We calculate the majority carrier mobility, photocurrent, and number of photogenerated charge carriers from the resulting current transient. We demonstrate this technique on an organic photovoltaic device, but it is applicable to a wide range of photovoltaic materials.

  3. PPPL to design a high-resolution diagnostic system for the National

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

    Ignition Facility | Princeton Plasma Physics Lab to design a high-resolution diagnostic system for the National Ignition Facility By Johm Greenwald November 16, 2015 Tweet Widget Google Plus One Share on Facebook Kenneth Hill and Manfred Bitter inspect an X-ray crystal spectrometer to be used to study OMEGA EP laser-produced plasmas. (Photo by Elle Starkman/Office of Communications) Kenneth Hill and Manfred Bitter inspect an X-ray crystal spectrometer to be used to study OMEGA EP

  4. Development of a high-resolution bathymetry dataset for the Columbia River through the Hanford Reach

    SciTech Connect (OSTI)

    Coleman, Andre M.; Ward, Duane L.; Larson, Kyle B.; Lettrick, Joseph W.

    2010-10-08

    A bathymetric and topographic data collection and processing effort involving existing and newly collected data has been performed for the Columbia River through the Hanford Reach in central Washington State, extending 60-miles from the tailrace of Priest Rapids Dam (river mile 397) to near the vicinity of the Interstate 182 bridge just upstream of the Yakima River confluence (river mile 337). The contents of this report provide a description of the data collections, data inputs, processing methodology, and final data quality assessment used to develop a comprehensive and continuous merged 1m resolution bathymetric and topographic surface dataset for the Columbia River through the Hanford Reach.

  5. A high spatial resolution Stokes polarimeter for motional Stark effect imaging

    SciTech Connect (OSTI)

    Thorman, Alex; Michael, Clive; Howard, John [Plasma Research Laboratory, Research School of Physics and Engineering, Australian National University, Canberra ACT 0200 (Australia)

    2013-06-15

    We describe an enhanced temporally switched interfero-polarimeter that has been successfully deployed for high spatial resolution motional Stark effect imaging on the KSTAR superconducting tokamak. The system utilizes dual switching ferroelectric liquid crystal waveplates to image the full Stokes vector of elliptically polarized and Doppler-shifted Stark-Zeeman Balmer-alpha emission from high energy neutral beams injected into the magnetized plasma. We describe the optical system and compare its performance against a Mueller matrix model that takes account of non-ideal performance of the switching ferro-electric liquid crystal waveplates and other polarizing components.

  6. High-Resolution Spectroscopy with the Chandra X-ray Observatory

    ScienceCinema (OSTI)

    Canizares, Claude R. [MIT, Cambridge, Massachusetts, United States

    2010-01-08

    The capabilities of the Chandra X-ray Observatory and XMM-Newton for high-resolution spectroscopy have brought tradition plasma diagnostic techniques to the study of cosmic plasma. Observations have probed nearly every class of astronomical object, from young proto-starts through massive O starts and black hole binaries, supernova remnants, active galactic nuclei, and the intergalactic medium. Many of these sources show remarkable rich spectra that reveal new physical information, such as emission measure distributions, elemental abundances, accretion disk and wind signatures, and time variability. This talk will present an overview of the Chandra instrumentaton and selected examples of spectral observations of astrophysical and cosmological importance.

  7. High-resolution PET [Positron Emission Tomography] for Medical Science Studies

    DOE R&D Accomplishments [OSTI]

    Budinger, T. F.; Derenzo, S. E.; Huesman, R. H.; Jagust, W. J.; Valk, P. E.

    1989-09-01

    One of the unexpected fruits of basic physics research and the computer revolution is the noninvasive imaging power available to today's physician. Technologies that were strictly the province of research scientists only a decade or two ago now serve as the foundations for such standard diagnostic tools as x-ray computer tomography (CT), magnetic resonance imaging (MRI), magnetic resonance spectroscopy (MRS), ultrasound, single photon emission computed tomography (SPECT), and positron emission tomography (PET). Furthermore, prompted by the needs of both the practicing physician and the clinical researcher, efforts to improve these technologies continue. This booklet endeavors to describe the advantages of achieving high resolution in PET imaging.

  8. High-resolution methods for preserving the sum of mass fractions: improved ?-scheme and an alternative

    SciTech Connect (OSTI)

    Syamlal, Madhava; Benyahia, Sofiane

    2013-11-20

    When high resolution convection schemes are used for discretizing chemical species mass balance equations, the mass fractions are not guaranteed to add to one. We show that a proposed remedy called ?-scheme (Darwish and Moukalled, Comput.Methods Appl.Mech. Engrg. 192 (2003): 1711) will degrade to a diffusive first-order scheme when a chemical species vanishes from the mixture, for example, because of chemical reactions. We propose an improvement to the ?-scheme to overcome this problem. Furthermore, a computationally efficient alternative scheme is proposed and evaluated with several examples, to quantify the improvements in the accuracy and the computational time.

  9. Experimental techniques for subnanosecond resolution of laser-launched plates and impact studies

    SciTech Connect (OSTI)

    Paisley, D.L.; Warnes, R.H.; Stahl, D.B.

    1994-09-01

    Miniature laser-launched plates have applications in shock wave physics, studying dynamic properties of materials and can be used to generate experimental data in a manner similar to a laboratory gas gun for one-dimensional impact experiments. Laser-launched plates have the advantage of small size, low kinetic energy, and can be launched with ubiquitous laboratory lasers. Because of the small size and high accelerations (10{sup 7}--10{sup 10} g`s), improved temporal resolution and optical non-contact methods to collect data are required. Traditional mechanical in-situ gauges would significantly impair the data quality and do not have the required time response.

  10. New Strategies for 0.5 mm Resolution, High Sensitivity, Multi- Radionuclide Imaging

    SciTech Connect (OSTI)

    Levin, Craig S; Levin, Craig

    2015-02-28

    This project constitutes a 0.5-millimeter resolution radionuclide detector system built from CZT. (1) A novel dual-crystal photon detector module design with cross-strip electrode patterns was developed; (2) The module mechanical assembly was built; (3) A data acquisition (DAQ) chain for the module was produced; (4) A software tool was developed to incorporate novel time and energy measurement calibration techniques. (5) A small multi-detector prototype of the radionuclide imaging system was built from this module for system-level characterizations.

  11. A new variable-resolution associative memory for high energy physics

    SciTech Connect (OSTI)

    Annovi, A.; Amerio, S.; Beretta, M.; Bossini, E.; Crescioli, F.; Dell'Orso, M.; Giannetti, P.; Hoff, J.; Liu, T.; Magalotti, D.; Piendibene, M.; Sacco, I.; Schoening, A.; Soltveit, H. K.; Stabile, A.; Tripiccione, R.; Liberali, V.; Vitillo, R.; Volpi, G.

    2011-07-01

    We describe an important advancement for the Associative Memory device (AM). The AM is a VLSI processor for pattern recognition based on Content Addressable Memory (CAM) architecture. The AM is optimized for on-line track finding in high-energy physics experiments. Pattern matching is carried out by finding track candidates in coarse resolution 'roads'. A large AM bank stores all trajectories of interest, called 'patterns', for a given detector resolution. The AM extracts roads compatible with a given event during detector read-out. Two important variables characterize the quality of the AM bank: its 'coverage' and the level of fake roads. The coverage, which describes the geometric efficiency of a bank, is defined as the fraction of tracks that match at least one pattern in the bank. Given a certain road size, the coverage of the bank can be increased just adding patterns to the bank, while the number of fakes unfortunately is roughly proportional to the number of patterns in the bank. Moreover, as the luminosity increases, the fake rate increases rapidly because of the increased silicon occupancy. To counter that, we must reduce the width of our roads. If we decrease the road width using the current technology, the system will become very large and extremely expensive. We propose an elegant solution to this problem: the 'variable resolution patterns'. Each pattern and each detector layer within a pattern will be able to use the optimal width, but we will use a 'don't care' feature (inspired from ternary CAMs) to increase the width when that is more appropriate. In other words we can use patterns of variable shape. As a result we reduce the number of fake roads, while keeping the efficiency high and avoiding excessive bank size due to the reduced width. We describe the idea, the implementation in the new AM design and the implementation of the algorithm in the simulation. Finally we show the effectiveness of the 'variable resolution patterns' idea using simulated high occupancy events in the ATLAS detector. (authors)

  12. COLLOQUIUM: Development of High Resolution X-Ray Spectroscopy at PPPL |

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

    Princeton Plasma Physics Lab January 21, 2015, 4:00pm to 5:30pm Colloquia MBG Auditorium COLLOQUIUM: Development of High Resolution X-Ray Spectroscopy at PPPL Dr. Kenneth Hill Princeton Plasma Physics Laboratory This lecture reviews the development of x-ray spectroscopy at PPPL, which began in the 1970's on the ST (Symmetric Tokamak) and has had a significant impact on the magnetic fusion research program worldwide. Several important physics parameters can be measured with these techniques.

  13. Scientific system for high-resolution measurement of the circumsolar radiation

    SciTech Connect (OSTI)

    Schrott, Simeon Schmidt, Thomas Hornung, Thorsten Nitz, Peter

    2014-09-26

    We developed a camera based system for measurements of the circumsolar radiation with a high angular resolution of 0.1 mrad. Subsequent measurements may be taken at intervals as short as 15 s. In this publication we describe the optical system in detail and discuss some aspects of the measurement method. First results from two days of measurement at Freiburg i. Br., Germany, are presented and compared to data from literature. The good results encourage us to perform longer measurement campaigns in future to better understand the influence of circumsolar radiation on the power yield of concentrating photovoltaic systems.

  14. High-resolution imaging and target designation through clouds or smoke

    DOE Patents [OSTI]

    Perry, Michael D.

    2003-01-01

    A method and system of combining gated intensifiers and advances in solid-state, short-pulse laser technology, compact systems capable of producing high resolution (i.e., approximately less than 20 centimeters) optical images through a scattering medium such as dense clouds, fog, smoke, etc. may be achieved from air or ground based platforms. Laser target designation through a scattering medium is also enabled by utilizing a short pulse illumination laser and a relatively minor change to the detectors on laser guided munitions.

  15. Design of a High Resolution and High Flux Beam line for VUV Angle-Resolved Photoemission at UVSOR-II

    SciTech Connect (OSTI)

    Kimura, Shin-ichi; Ito, Takahiro; Nakamura, Eiken; Hosaka, Masahito; Katoh, Masahiro

    2007-01-19

    A high-energy-resolution angle-resolved photoemission beamline in the vacuum-ultraviolet (VUV) region has been designed for a 750 MeV synchrotron light source UVSOR-II. The beamline equips an APPLE-II-type undulator with the horizontally/vertically linear and right/left circular polarizations, a modified Wadsworth-type monochromator and a high-resolution photoelectron analyzer. The monochromator covers the photon energy range of 6 - 40 eV. The energy resolution (hv/{delta}hv) and the photon flux on samples are expected to be 2 x 104 and 1012 photons/sec at 10 eV, 4 x 104 and 5 x 1011 photons/sec at 20 eV, and 6 x 104 and 1011 photons/sec at 40 eV, respectively. The beamline provides the high-resolution angle-resolved photoemission spectroscopy less than 1 meV in the whole VUV energy range.

  16. Indexing Permafrost Soil Organic Matter Degradation Using High-Resolution Mass Spectrometry

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

    Mann, Benjamin F.; Chen, Hongmei; Herndon, Elizabeth M.; Chu, Rosalie K.; Tolic, Nikola; Portier, Evan F.; Roy Chowdhury, Taniya; Robinson, Errol W.; Callister, Stephen J.; Wullschleger, Stan D.; et al

    2015-06-12

    Microbial degradation of soil organic matter (SOM) is a key process for terrestrial carbon cycling, although the molecular details of these transformations remain unclear. This study reports the application of ultrahigh resolution mass spectrometry to profile the molecular composition of SOM and its degradation during a simulated warming experiment. A soil sample, collected near Barrow, Alaska, USA, was subjected to a 40-day incubation under anoxic conditions and analyzed before and after the incubation to determine changes of SOM composition. A CHO index based on molecular C, H, and O data was utilized to codify SOM components according to their observedmore » degradation potentials. Compounds with a CHO index score between –1 and 0 in a water-soluble fraction (WSF) demonstrated high degradation potential, with a highest shift of CHO index occurred in the N-containing group of compounds, while similar stoichiometries in a base-soluble fraction (BSF) did not. Additionally, compared with the classical H:C vs O:C van Krevelen diagram, CHO index allowed for direct visualization of the distribution of heteroatoms such as N in the identified SOM compounds. We demonstrate that CHO index is useful not only in characterizing arctic SOM at the molecular level but also enabling quantitative description of SOM degradation, thereby facilitating incorporation of the high resolution MS datasets to future mechanistic models of SOM degradation and prediction of greenhouse gas emissions.« less

  17. Unsupervised individual tree crown detection in high-resolution satellite imagery

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

    Skurikhin, Alexei N.; McDowell, Nate G.; Middleton, Richard S.

    2016-01-26

    Rapidly and accurately detecting individual tree crowns in satellite imagery is a critical need for monitoring and characterizing forest resources. We present a two-stage semiautomated approach for detecting individual tree crowns using high spatial resolution (0.6 m) satellite imagery. First, active contours are used to recognize tree canopy areas in a normalized difference vegetation index image. Given the image areas corresponding to tree canopies, we then identify individual tree crowns as local extrema points in the Laplacian of Gaussian scale-space pyramid. The approach simultaneously detects tree crown centers and estimates tree crown sizes, parameters critical to multiple ecosystem models. Asmore » a demonstration, we used a ground validated, 0.6 m resolution QuickBird image of a sparse forest site. The two-stage approach produced a tree count estimate with an accuracy of 78% for a naturally regenerating forest with irregularly spaced trees, a success rate equivalent to or better than existing approaches. In addition, our approach detects tree canopy areas and individual tree crowns in an unsupervised manner and helps identify overlapping crowns. Furthermore, the method also demonstrates significant potential for further improvement.« less

  18. LENS MODELS OF HERSCHEL-SELECTED GALAXIES FROM HIGH-RESOLUTION NEAR-IR OBSERVATIONS

    SciTech Connect (OSTI)

    Calanog, J. A.; Cooray, A.; Ma, B.; Casey, C. M.; Fu, Hai; Wardlow, J.; Amber, S.; Baker, A. J.; Baes, M.; Bock, J.; Bourne, N.; Dye, S.; Bussmann, R. S.; Chapman, S. C.; Clements, D. L.; Conley, A.; Dannerbauer, H.; Dunne, L.; Eales, S.; and others

    2014-12-20

    We present Keck-Adaptive Optics and Hubble Space Telescope high resolution near-infrared (IR) imaging for 500 ?m bright candidate lensing systems identified by the Herschel Multi-tiered Extragalactic Survey and Herschel Astrophysical Terahertz Large Area Survey. Out of 87 candidates with near-IR imaging, 15 (?17%) display clear near-IR lensing morphologies. We present near-IR lens models to reconstruct and recover basic rest-frame optical morphological properties of the background galaxies from 12 new systems. Sources with the largest near-IR magnification factors also tend to be the most compact, consistent with the size bias predicted from simulations and previous lensing models for submillimeter galaxies (SMGs). For four new sources that also have high-resolution submillimeter maps, we test for differential lensing between the stellar and dust components and find that the 880 ?m magnification factor (?{sub 880}) is ?1.5 times higher than the near-IR magnification factor (?{sub NIR}), on average. We also find that the stellar emission is ?2 times more extended in size than dust. The rest-frame optical properties of our sample of Herschel-selected lensed SMGs are consistent with those of unlensed SMGs, which suggests that the two populations are similar.

  19. A Global Climate Model Agent for High Spatial and Temporal Resolution Data

    SciTech Connect (OSTI)

    Wood, Lynn S.; Daily, Jeffrey A.; Henry, Michael J.; Palmer, Bruce J.; Schuchardt, Karen L.; Dazlich, Donald A.; Heikes, Ross P.; Randall, David

    2015-02-01

    Fine cell granularity in modern climate models can produce terabytes of data in each snapshot, causing significant I/O overhead. To address this issue, a method of reducing the I/O latency of high-resolution climate models by identifying and selectively outputting regions of interest is presented. Working with a Global Cloud Resolving Model and running with up to 10240 processors on a Cray XE6, this method provides significant I/O bandwidth reduction depending on the frequency of writes and size of the region of interest. The implementation challenges of determining global parameters in a strictly core-localized model and properly formatting output files that only contain subsections of the global grid are addressed, as well as the overall bandwidth impact and benefits of the method. The gains in I/O throughput provided by this method allow dual output rates for high-resolution climate models: a low-frequency global snapshot as well as a high-frequency regional snapshot when events of particular interest occur.

  20. Nuclear structure at the limits of resolution: Looking through individual wave functions

    SciTech Connect (OSTI)

    Zelevinsky, V.G. [Michigan State Univ., East Lansing, MI (United States)

    1996-12-31

    60 years ago Niels Bohr suggested the idea of the compound nucleus. Bohr`s picture strongly resembles that of quantum chaos. Here one comes to the limits of resolution studying particular stationary states at high level density. Present knowledge comes from the experiment and from theoretical constructions, confirmed by the experiment at lower energies and extrapolated into the region where fine resolution measurements are not feasible. Such an analysis was carried out recently for heavy atoms and shell model nuclei. Among complicated states with the same values of integrals of motion, either (i) adjacent states have different structure or (ii) they {open_quotes}look the same{close_quotes} on the microscopic scale. Only (ii) corresponds to strong mixing assumed in the compound nucleus theory. Many-body chaos in nuclei is caused by residual interactions rather than by specific shape of the {open_quotes}container{close_quotes} as in quantum billiards. The shell model, including all degrees of freedom (in truncated space) along with the symmetry requirements, guarantees the correct level density up to some excitation energy. Therefore one can extrapolate the calculations into terra incognita of high lying states.

  1. FIRST HIGH-RESOLUTION IMAGES OF THE SUN IN THE 2796 Mg II k LINE

    SciTech Connect (OSTI)

    Riethmller, T. L.; Solanki, S. K.; Hirzberger, J.; Danilovic, S.; Barthol, P.; Gandorfer, A.; Gizon, L.; Berkefeld, T.; Schmidt, W.; Knlker, M.; Del Toro Iniesta, J. C.

    2013-10-10

    We present the first high-resolution solar images in the Mg II k 2796 line. The images, taken through a 4.8 broad interference filter, were obtained during the second science flight of Sunrise in 2013 June by the Sunrise Filter Imager (SuFI) instrument. The Mg II k images display structures that look qualitatively very similar to images taken in the core of Ca II H. The Mg II images exhibit reversed granulation (or shock waves) in the internetwork regions of the quiet Sun, at intensity contrasts that are similar to those found in Ca II H. Very prominent in Mg II are bright points, both in the quiet Sun and in plage regions, particularly near the disk center. These are much brighter than at other wavelengths sampled at similar resolution. Furthermore, Mg II k images also show fibril structures associated with plage regions. Again, the fibrils are similar to those seen in Ca II H images, but tend to be more pronounced, particularly in weak plage.

  2. High order finite difference methods with subcell resolution for advection equations with stiff source terms

    SciTech Connect (OSTI)

    Wang, Wei; Shu, Chi-Wang; Yee, H.C.; Sjgreen, Bjrn

    2012-01-01

    A new high order finite-difference method utilizing the idea of Harten ENO subcell resolution method is proposed for chemical reactive flows and combustion. In reaction problems, when the reaction time scale is very small, e.g., orders of magnitude smaller than the fluid dynamics time scales, the governing equations will become very stiff. Wrong propagation speed of discontinuity may occur due to the underresolved numerical solution in both space and time. The present proposed method is a modified fractional step method which solves the convection step and reaction step separately. In the convection step, any high order shock-capturing method can be used. In the reaction step, an ODE solver is applied but with the computed flow variables in the shock region modified by the Harten subcell resolution idea. For numerical experiments, a fifth-order finite-difference WENO scheme and its anti-diffusion WENO variant are considered. A wide range of 1D and 2D scalar and Euler system test cases are investigated. Studies indicate that for the considered test cases, the new method maintains high order accuracy in space for smooth flows, and for stiff source terms with discontinuities, it can capture the correct propagation speed of discontinuities in very coarse meshes with reasonable CFL numbers.

  3. Turbulence patterns and neutrino flavor transitions in high-resolution supernova models

    SciTech Connect (OSTI)

    Borriello, Enrico; Mirizzi, Alessandro [II. Institut fr Theoretische Physik, Universitt Hamburg, Luruper Chaussee 149, D-22761 Hamburg (Germany); Chakraborty, Sovan [Max-Planck-Institut fr Physik (Werner-Heisenberg-Institut), Fhringer Ring 6, D-80805 Mnchen (Germany); Janka, Hans-Thomas [Max-Planck-Institut fr Astrophysik, Karl-Schwarzschild-Str. 1, 85748 Garching (Germany); Lisi, Eligio, E-mail: enrico.borriello@desy.de, E-mail: sovan@mppmu.mpg.de, E-mail: thj@mpa-garching.mpg.de, E-mail: eligio.lisi@ba.infn.it, E-mail: alessandro.mirizzi@desy.de [INFNSezione di Bari, Via Orabona 4, 70126 Bari (Italy)

    2014-11-01

    During the shock-wave propagation in a core-collapse supernova (SN), matter turbulence may affect neutrino flavor conversion probabilities. Such effects have been usually studied by adding parametrized small-scale random fluctuations (with arbitrary amplitude) on top of coarse, spherically symmetric matter density profiles. Recently, however, two-dimensional (2D) SN models have reached a space resolution high enough to directly trace anisotropic density profiles, down to scales smaller than the typical neutrino oscillation length. In this context, we analyze the statistical properties of a large set of SN matter density profiles obtained in a high-resolution 2D simulation, focusing on a post-bounce time (2 s) suited to study shock-wave effects on neutrino propagation on scales as small as O(100) km and possibly below. We clearly find the imprint of a broken (Kolmogorov-Kraichnan) power-law structure, as generically expected in 2D turbulence spectra. We then compute the flavor evolution of SN neutrinos along representative realizations of the turbulent matter density profiles, and observe no or modest damping of the neutrino crossing probabilities on their way through the shock wave. In order to check the effect of possibly unresolved fluctuations at scales below O(100) km, we also apply a randomization procedure anchored to the power spectrum calculated from the simulation, and find consistent results within 1? fluctuations. These results show the importance of anchoring turbulence effects on SN neutrinos to realistic, fine-grained SN models.

  4. High resolution transmission electron microscopy of melamine-formaldehyde aerogels and silica aerogels

    SciTech Connect (OSTI)

    Ruben, G.C. (Dartmouth Coll., Hanover, NH (United States). Dept. of Biological Sciences)

    1991-09-01

    The goal of the high resolution transmission electron microscopy (HRTEM) was to image the structure of two tetramethyl orthosilicate (TMOS) and two melamine-formaldehyde (MF) aerogels at the single polymer chain level{sup 1,2}. With this level of structural resolution we hoped to interrelate each aerogel's structure with its physical properties and its method of synthesis. Conventional single-step base catalysed TMOS aerogels show strings of spheroidal particles linked together with minimal necking. The spheroidal particles range from 86--132 {Angstrom} and average 113{plus minus}10 {Angstrom} in diameter{sup 2}. In contrast the TMOS aerogels reported on here were made by a two step method. After extended silica chains are grown in solution under acidic conditions with a substoichiometric amount of water, the reaction is stopped and the methanol hydrolysed from TMOS is removed. Then base catalysis and additional water are added to cause gel formation is a nonalcoholic solvent. The MF aerogels were prepared for HRTEM by fracturing them on a stereo microscope stage with razor knife so that fractured pieces with smooth flat surfaces could be selected for platinum-carbon replication. The two silica (TMOS) aerogels were both transparent and difficult to see. These aerogels were fractured on a stereo microscope stage with tweezers. 6 refs., 4 figs.

  5. Imaging thermal conductivity with nanoscale resolution using a scanning spin probe

    SciTech Connect (OSTI)

    Laraoui, Abdelghani; Aycock-Rizzo, Halley; Gao, Yang; Lu, Xi; Riedo, Elisa; Meriles, Carlos A.

    2015-11-20

    The ability to probe nanoscale heat flow in a material is often limited by lack of spatial resolution. Here, we use a diamond-nanocrystal-hosted nitrogen-vacancy centre attached to the apex of a silicon thermal tip as a local temperature sensor. We apply an electrical current to heat up the tip and rely on the nitrogen vacancy to monitor the thermal changes the tip experiences as it is brought into contact with surfaces of varying thermal conductivity. By combining atomic force and confocal microscopy, we image phantom microstructures with nanoscale resolution, and attain excellent agreement between the thermal conductivity and topographic maps. The small mass and high thermal conductivity of the diamond host make the time response of our technique short, which we demonstrate by monitoring the tip temperature upon application of a heat pulse. Our approach promises multiple applications, from the investigation of phonon dynamics in nanostructures to the characterization of heterogeneous phase transitions and chemical reactions in various solid-state systems.

  6. Design and performance of AERHA, a high acceptance high resolution soft x-ray spectrometer

    SciTech Connect (OSTI)

    Chiuzbăian, Sorin G. Hague, Coryn F.; Brignolo, Stefania; Baumier, Cédric; Lüning, Jan; CNRS, UMR 7614, Laboratoire de Chimie Physique-Matière et Rayonnement, 11 rue Pierre et Marie Curie, F-75005 Paris; Synchrotron SOLEIL, L’Orme des Merisiers, Saint-Aubin, B.P. 48, F-91192 Gif-sur-Yvette ; Avila, Antoine; Delaunay, Renaud; Mariot, Jean-Michel; CNRS, UMR 7614, Laboratoire de Chimie Physique-Matière et Rayonnement, 11 rue Pierre et Marie Curie, F-75005 Paris ; Jaouen, Nicolas; Polack, François; Thomasset, Muriel; Lagarde, Bruno; Nicolaou, Alessandro; Sacchi, Maurizio; Sorbonne Universités, UPMC Univ Paris 06, UMR 7588, Institut des NanoSciences de Paris, 4 place Jussieu, F-75252 Paris Cedex 05; CNRS, UMR 7588, Institut des NanoSciences de Paris, 4 place Jussieu, F-75252 Paris Cedex 05

    2014-04-15

    A soft x-ray spectrometer based on the use of an elliptical focusing mirror and a plane varied line spacing grating is described. It achieves both high resolution and high overall efficiency while remaining relatively compact. The instrument is dedicated to resonant inelastic x-ray scattering studies. We set out how this optical arrangement was judged best able to guarantee performance for the 50 − 1000 eV range within achievable fabrication targets. The AERHA (adjustable energy resolution high acceptance) spectrometer operates with an effective angular acceptance between 100 and 250 μsr (energy dependent) and a resolving power well in excess of 5000 according to the Rayleigh criterion. The high angular acceptance is obtained by means of a collecting pre-mirror. Three scattering geometries are available to enable momentum dependent measurements with 135°, 90°, and 50° scattering angles. The instrument operates on the Synchrotron SOLEIL SEXTANTS beamline which serves as a high photon flux 2 × 200 μm{sup 2} focal spot source with full polarization control.

  7. Nucleotide-binding flexibility in ultrahigh-resolution structures of the SRP GTPase Ffh

    SciTech Connect (OSTI)

    Ramirez, Ursula D.; Focia, Pamela J.; Freymann, Douglas M.

    2008-10-01

    Crystal structures of the Ffh NG GTPase domain at < 1.24 resolution reveal multiple overlapping nucleotide binding modes. Two structures of the nucleotide-bound NG domain of Ffh, the GTPase subunit of the bacterial signal recognition particle (SRP), have been determined at ultrahigh resolution in similar crystal forms. One is GDP-bound and one is GMPPCP-bound. The asymmetric unit of each structure contains two protein monomers, each of which exhibits differences in nucleotide-binding conformation and occupancy. The GDP-bound Ffh NG exhibits two binding conformations in one monomer but not the other and the GMPPCP-bound protein exhibits full occupancy of the nucleotide in one monomer but only partial occupancy in the other. Thus, under the same solution conditions, each crystal reveals multiple binding states that suggest that even when nucleotide is bound its position in the Ffh NG active site is dynamic. Some differences in the positioning of the bound nucleotide may arise from differences in the crystal-packing environment and specific factors that have been identified include the relative positions of the N and G domains, small conformational changes in the P-loop, the positions of waters buried within the active site and shifts in the closing loop that packs against the guanine base. However, loose binding may have biological significance in promoting facile nucleotide exchange and providing a mechanism for priming the SRP GTPase prior to its activation in its complex with the SRP receptor.

  8. Indexing Permafrost Soil Organic Matter Degradation Using High-Resolution Mass Spectrometry

    SciTech Connect (OSTI)

    Mann, Benjamin F.; Chen, Hongmei; Herndon, Elizabeth M.; Chu, Rosalie K.; Tolic, Nikola; Portier, Evan F.; Roy Chowdhury, Taniya; Robinson, Errol W.; Callister, Stephen J.; Wullschleger, Stan D.; Graham, David E.; Liang, Liyuan; Gu, Baohua; Hui, Dafeng

    2015-06-12

    Microbial degradation of soil organic matter (SOM) is a key process for terrestrial carbon cycling, although the molecular details of these transformations remain unclear. This study reports the application of ultrahigh resolution mass spectrometry to profile the molecular composition of SOM and its degradation during a simulated warming experiment. A soil sample, collected near Barrow, Alaska, USA, was subjected to a 40-day incubation under anoxic conditions and analyzed before and after the incubation to determine changes of SOM composition. A CHO index based on molecular C, H, and O data was utilized to codify SOM components according to their observed degradation potentials. Compounds with a CHO index score between 1 and 0 in a water-soluble fraction (WSF) demonstrated high degradation potential, with a highest shift of CHO index occurred in the N-containing group of compounds, while similar stoichiometries in a base-soluble fraction (BSF) did not. Additionally, compared with the classical H:C vs O:C van Krevelen diagram, CHO index allowed for direct visualization of the distribution of heteroatoms such as N in the identified SOM compounds. We demonstrate that CHO index is useful not only in characterizing arctic SOM at the molecular level but also enabling quantitative description of SOM degradation, thereby facilitating incorporation of the high resolution MS datasets to future mechanistic models of SOM degradation and prediction of greenhouse gas emissions.

  9. A compact and miniaturized high resolution capacitance dilatometer for measuring thermal expansion and magnetostriction

    SciTech Connect (OSTI)

    Kuechler, R.; Bauer, T.; Brando, M.; Steglich, F.

    2012-09-15

    We describe the design, construction, calibration, and two different applications of a miniature capacitance dilatometer. The device is suitable for thermal expansion and magnetostriction measurements from 300 K down to about 25 mK, with a resolution of 0.02 A at low temperatures. The main body of the dilatometer is fabricated from a single block of a Be-Cu alloy by electrical discharge milling. This creates an extremely compact high-resolution measuring cell. We have successfully tested and operated dilatometers of this new type with the commonly used physical property measurement system by quantum design, as well as with several other cryogenic refrigeration systems down to 25 mK and in magnetic fields up to 20 T. Here, the capacitance is measured with a commercially available capacitance bridge. Using a piezoelectric rotator from Attocube Systems, the cell can be rotated at T= 25 mK inside of an inner vacuum chamber of 40 mm diameter. The miniaturized design for the one-axis rotation setup allows a rotation of 360 Degree-Sign .

  10. Imaging thermal conductivity with nanoscale resolution using a scanning spin probe

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

    Laraoui, Abdelghani; Aycock-Rizzo, Halley; Gao, Yang; Lu, Xi; Riedo, Elisa; Meriles, Carlos A.

    2015-11-20

    The ability to probe nanoscale heat flow in a material is often limited by lack of spatial resolution. Here, we use a diamond-nanocrystal-hosted nitrogen-vacancy centre attached to the apex of a silicon thermal tip as a local temperature sensor. We apply an electrical current to heat up the tip and rely on the nitrogen vacancy to monitor the thermal changes the tip experiences as it is brought into contact with surfaces of varying thermal conductivity. By combining atomic force and confocal microscopy, we image phantom microstructures with nanoscale resolution, and attain excellent agreement between the thermal conductivity and topographic maps.more » The small mass and high thermal conductivity of the diamond host make the time response of our technique short, which we demonstrate by monitoring the tip temperature upon application of a heat pulse. Our approach promises multiple applications, from the investigation of phonon dynamics in nanostructures to the characterization of heterogeneous phase transitions and chemical reactions in various solid-state systems.« less

  11. High-resolution radio observations of W50, the remnant associated with SS 433

    SciTech Connect (OSTI)

    Elston, R.; Baum, S.

    1987-12-01

    The NRAO VLA has been used to observe the radio source W50 with 30 arcsec and 1 arcmin resolutions at 20 cm. It is found that the overall structure of W50 is well delineated by filamentary structure. W50 possesses a nearly circular shell reminiscent of an evolved supernova remnant such as CTB1 and the Cygnus Loop. The most unusual features of W50 are the edge-brightened radio ears which extend beyond the shell. These ears appear morphologically distinct from the shell and have minimum energy pressures three times greater than are present in the shell. Thus, while no direct connection is observed between SS433 and the ears, it is suggested that the ears are the result of the interaction of the ram pressure of the collimated jets of SS433 with a supernova remnant shell. At 30 arcsec resolution the western ear of W50 is depolarized, suggesting that W50 and S74 are at a common distance of about 3 kpc. 27 references.

  12. An assessment of the resolution limitation due to radiation-damage in X-ray diffraction microscopy

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

    Howells, M. R.; Beetz, T.; Chapman, H. N.; Cui, C.; Holton, J. M.; Jacobsen, C. J.; Kirz, J.; Lima, E.; Marchesini, S.; Miao, H.; et al

    2008-11-17

    X-ray diffraction microscopy (XDM) is a new form of x-ray imaging that is being practiced at several third-generation synchrotron-radiation x-ray facilities. Nine years have elapsed since the technique was first introduced and it has made rapid progress in demonstrating high-resolution three-dimensional imaging and promises few-nm resolution with much larger samples than can be imaged in the transmission electron microscope. Both life- and materials-science applications of XDM are intended, and it is expected that the principal limitation to resolution will be radiation damage for life science and the coherent power of available x-ray sources for material science. In this paper wemore » address the question of the role of radiation damage. We use a statistical analysis based on the so-called "dose fractionation theorem" of Hegerl and Hoppe to calculate the dose needed to make an image of a single life-science sample by XDM with a given resolution. We find that for simply-shaped objects the needed dose scales with the inverse fourth power of the resolution and present experimental evidence to support this finding. To determine the maximum tolerable dose we have assembled a number of data taken from the literature plus some measurements of our own which cover ranges of resolution that are not well covered otherwise. The conclusion of this study is that, based on the natural contrast between protein and water and "Rose-criterion" image quality, one should be able to image a frozen-hydrated biological sample using XDM at a resolution of about 10 nm.« less

  13. High resolution transmission electron microscopic in-situ observations of plastic deformation of compressed nanocrystalline gold

    SciTech Connect (OSTI)

    Wang, Guoyong; Lian, Jianshe; Jiang, Qing; Sun, Sheng; Zhang, Tong-Yi

    2014-09-14

    Nanocrystalline (nc) metals possess extremely high strength, while their capability to deform plastically has been debated for decades. Low ductility has hitherto been considered an intrinsic behavior for most nc metals, due to the lack of five independent slip systems actively operating during deformation in each nanograin. Here we report in situ high resolution transmission electron microscopic (HRTEM) observations of deformation process of nc gold under compression, showing the excellent ductility of individual and aggregate nanograins. Compression causes permanent change in the profile of individual nanograins, which is mediated by dislocation slip and grain rotation. The high rate of grain boundary sliding and large extent of widely exited grain rotation may meet the boundary compatibility requirements during plastic deformation. The in situ HRTEM observations suggest that nc gold is not intrinsically brittle under compressive loading.

  14. High resolution interface nanochemistry and structure: Final project report, December 1, 1993--February 28, 1997

    SciTech Connect (OSTI)

    Carpenter, R.W.; Lin, S.H.

    1997-02-27

    Work includes studies of interface and grain boundary chemistry and structure in silicon nitride matrix/silicon carbide whisker composites, and in monolithic silicon nitride and silicon carbide synthesized by several different methods. Off-stoichiometric, impurity, and sintering aid elemental distributions in these materials (and other ceramics) have been of great interest because of expected effects on properties but these distributions have proven very difficult to measure because the spatial resolution required is high. The authors made a number of these measurements for the first time, using techniques and instrumentation developed here. Interfaces between metals and SiC are the basis for important metal matrix composites and contacts for high temperature SiC-based solid state electronic devices. The authors have investigated ultrapure interfaces between Ti, Hf, Ti-Hf alloys, Pt, and Co and Si-terminated (0001) 6H SiC single crystals for the first time.

  15. Applying high resolution SyXRD analysis on sulfate attacked concrete field samples

    SciTech Connect (OSTI)

    Stroh, J.; Schlegel, M.-C.; Irassar, E.F.; Meng, B.; Emmerling, F.

    2014-12-15

    High resolution synchrotron X-ray diffraction (SyXRD) was applied for a microstructural profile analysis of concrete deterioration after sulfate attack. The cement matrices consist of ordinary Portland cement and different amounts of supplementary cementitious materials, such as fly ash, natural pozzolana and granulated blast furnace slag. The changes of the phase composition were determined along the direction of sulfate ingress. This approach allows the identification of reaction fronts and zones of different phase compositions and conclusions about the mechanisms of sulfate attack. Two reaction fronts were localized in the initial 4 mm from the sample surface. The mechanism of deterioration caused by the exposition in the sulfate-bearing soil is discussed. SyXRD is shown to be a reliable method for investigation of cementitious materials with aggregates embedded in natural environments.

  16. High resolution electron microscopy study of as-prepared and annealed tungsten-carbon multilayers

    SciTech Connect (OSTI)

    Nguyen, T.D.; Gronsky, R.; Kortright, J.B.

    1988-12-01

    A series of sputtered tungsten-carbon multilayer structures with periods ranging from 2 to 12 nm in the as-prepared state and after annealing at 500/degree/C for 4 hours has been studied with high resolution transmission electron microscopy. The evolution with annealing of the microstructure of these multilayers depends on their period. As-prepared structures appear predominantly amorphous from TEM imaging and diffraction. Annealing results in crystallization of the W-rich layers into WC in the larger period samples, and less complete or no crystallization in the smaller period samples. X-ray scattering reveals that annealing expands the period in a systematic way. The layers remain remarkably well-defined after annealing under these conditions. 12 refs., 4 figs., 1 tab.

  17. Ultraviolet high-spectral-resolution Doppler lidar for measuring wind field and aerosol optical properties

    SciTech Connect (OSTI)

    Imaki, Masaharu; Kobayashi, Takao

    2005-10-01

    An ultraviolet incoherent Doppler lidar that incorporates the high-spectral-resolution (HSR) technique has been developed for measuring the wind field and aerosol optical properties in the troposphere. An injection seeded and tripled Nd:YAG laser at an ultraviolet wavelength of 355 nm was used in the lidar system. The HRS technique can resolve the aerosol Mie backscatter and the molecular Rayleigh backscatter to derive the signal components. By detecting the Mie backscatter, a great increase in the Doppler filter sensitivity was realized compared to the conventional incoherent Doppler lidars that detected the Rayleigh backscatter. The wind velocity distribution in a two-dimensional cross section was measured. By using the HSR technique, multifunction and absolute value measurements were realized for aerosol extinction, and volume backscatter coefficients; the laser beam transmittance, the lidar ratio, and the backscatter ratio are derived from these measurements.

  18. Compact, high-resolution, gamma ray imaging for scintimammography and other medical diagostic applications

    DOE Patents [OSTI]

    Majewski, Stanislaw (Grafton, VA); Weisenberger, Andrew G. (Grafton, VA); Wojcik, Randolph F. (Yorktown, VA); Steinbach, Daniela (Williamsburg, VA)

    1999-01-01

    A high resolution gamma ray imaging device includes an aluminum housing, a lead screen collimator at an opened end of the housing, a crystal scintillator array mounted behind the lead screen collimator, a foam layer between the lead screen collimator and the crystal scintillator array, a photomultiplier window coupled to the crystal with optical coupling grease, a photomultiplier having a dynode chain body and a base voltage divider with anodes, anode wire amplifiers each connected to four anodes and a multi pin connector having pin connections to each anode wire amplifier. In one embodiment the crystal scintillator array includes a yttrium aluminum perovskite (YAP) crystal array. In an alternate embodiment, the crystal scintillator array includes a gadolinium oxyorthosilicate (GSO) crystal array.

  19. High-resolution metagenomics targets major functional types in complex microbial communities

    SciTech Connect (OSTI)

    Kalyuzhnaya, Marina G.; Lapidus, Alla; Ivanova, Natalia; Copeland, Alex C.; McHardy, Alice C.; Szeto, Ernest; Salamov, Asaf; Grigoriev, Igor V.; Suciu, Dominic; Levine, Samuel R.; Markowitz, Victor M.; Rigoutsos, Isidore; Tringe, Susannah G.; Bruce, David C.; Richardson, Paul M.; Lidstrom, Mary E.; Chistoserdova, Ludmila

    2009-08-01

    Most microbes in the biosphere remain uncultured and unknown. Whole genome shotgun (WGS) sequencing of environmental DNA (metagenomics) allows glimpses into genetic and metabolic potentials of natural microbial communities. However, in communities of high complexity metagenomics fail to link specific microbes to specific ecological functions. To overcome this limitation, we selectively targeted populations involved in oxidizing single-carbon (C{sub 1}) compounds in Lake Washington (Seattle, USA) by labeling their DNA via stable isotope probing (SIP), followed by WGS sequencing. Metagenome analysis demonstrated specific sequence enrichments in response to different C{sub 1} substrates, highlighting ecological roles of individual phylotypes. We further demonstrated the utility of our approach by extracting a nearly complete genome of a novel methylotroph Methylotenera mobilis, reconstructing its metabolism and conducting genome-wide analyses. This approach allowing high-resolution genomic analysis of ecologically relevant species has the potential to be applied to a wide variety of ecosystems.

  20. High-resolution spectroscopy used to measure inertial confinement fusion neutron spectra on Omega (invited)

    SciTech Connect (OSTI)

    Forrest, C. J.; Radha, P. B.; Glebov, V. Yu.; Goncharov, V. N.; Knauer, J. P.; Pruyne, A.; Romanofsky, M.; Sangster, T. C.; Shoup, M. J. III; Stoeckl, C.; Casey, D. T.; Gatu-Johnson, M.; Gardner, S.

    2012-10-15

    The areal density ({rho}R) of cryogenic DT implosions on Omega is inferred by measuring the spectrum of neutrons that elastically scatter off the dense deuterium (D) and tritium (T) fuel. Neutron time-of-flight (nTOF) techniques are used to measure the energy spectrum with high resolution. High signal-to-background data has been recorded on cryogenic DT implosions using a well-collimated 13.4-m line of sight and an nTOF detector with an advanced liquid scintillator compound. An innovative method to analyze the elastically scattered neutron spectra was developed using well-known cross sections of the DT nuclear reactions. The estimated areal densities are consistent with alternative {rho}R measurements and 1-D simulations.

  1. Method and system for improved resolution of a compensated calorimeter detector

    DOE Patents [OSTI]

    Dawson, John W.

    1991-01-01

    An improved method and system for a depleted uranium calorimeter detector used in high energy physics experiments. In a depleted uranium calorimeter detector, the energy of a particle entering the calorimeter detector is determined and the output response of the calorimeter detector is compensated so that the ratio of the integrated response of the calorimeter detector from a lepton to the integrated response of the calorimeter detector from a hadron of the same energy as the lepton is approximately equal to 1. In the present invention, the energy of a particle entering the calorimeter detector is determined as a function of time and the hadron content of the response of the calorimeter detector is inferred based upon the time structure of the energy pulse measured by the calorimeter detector. The energy measurement can be corrected based on the inference of the hadron content whereby the resolution of the calorimeter can be improved.

  2. High-resolution NMR spectroscopy of biological tissues usingprojected Magic Angle Spinning

    SciTech Connect (OSTI)

    Martin, Rachel W.; Jachmann, Rebecca C.; Sakellariou, Dimitris; Nielsen, Ulla Gro; Pines, Alexander

    2005-01-27

    High-resolution NMR spectra of materials subject toanisotropic broadening are usually obtained by rotating the sample aboutthe magic angle, which is 54.7 degrees to the static magnetic field. Inprojected Magic Angle Spinning (p-MAS), the sample is spun about twoangles, neither of which is the magic angle. This provides a method ofobtaining isotropic spectra while spinning at shallow angles. The p-MASexperiment may be used in situations where spinning the sample at themagic angle is not possible due to geometric or other constraints,allowing the choice of spinning angle to be determined by factors such asthe shape of the sample, rather than by the spin physics. The applicationof this technique to bovine tissue samples is demonstrated as a proof ofprinciple for future biological or medical applications.

  3. A tunable low-energy photon source for high-resolution angle-resolved photoemission spectroscopy

    SciTech Connect (OSTI)

    Harter, John W.; Monkman, Eric J.; Shai, Daniel E.; Nie Yuefeng; Uchida, Masaki; Burganov, Bulat; Chatterjee, Shouvik; King, Philip D. C.; Shen, Kyle M.

    2012-11-15

    We describe a tunable low-energy photon source consisting of a laser-driven xenon plasma lamp coupled to a Czerny-Turner monochromator. The combined tunability, brightness, and narrow spectral bandwidth make this light source useful in laboratory-based high-resolution photoemission spectroscopy experiments. The source supplies photons with energies up to {approx}7 eV, delivering under typical conditions >10{sup 12} ph/s within a 10 meV spectral bandwidth, which is comparable to helium plasma lamps and many synchrotron beamlines. We first describe the lamp and monochromator system and then characterize its output, with attention to those parameters which are of interest for photoemission experiments. Finally, we present angle-resolved photoemission spectroscopy data using the light source and compare its performance to a conventional helium plasma lamp.

  4. Tip radius preservation for high resolution imaging in amplitude modulation atomic force microscopy

    SciTech Connect (OSTI)

    Ramos, Jorge R.

    2014-07-28

    The acquisition of high resolution images in atomic force microscopy (AFM) is correlated to the cantilever's tip shape, size, and imaging conditions. In this work, relative tip wear is quantified based on the evolution of a direct experimental observable in amplitude modulation atomic force microscopy, i.e., the critical amplitude. We further show that the scanning parameters required to guarantee a maximum compressive stress that is lower than the yield/fracture stress of the tip can be estimated via experimental observables. In both counts, the optimized parameters to acquire AFM images while preserving the tip are discussed. The results are validated experimentally by employing IgG antibodies as a model system.

  5. Apparatus and method to achieve high-resolution microscopy with non-diffracting or refracting radiation

    DOE Patents [OSTI]

    Tobin, Jr., Kenneth W.; Bingham, Philip R.; Hawari, Ayman I.

    2012-11-06

    An imaging system employing a coded aperture mask having multiple pinholes is provided. The coded aperture mask is placed at a radiation source to pass the radiation through. The radiation impinges on, and passes through an object, which alters the radiation by absorption and/or scattering. Upon passing through the object, the radiation is detected at a detector plane to form an encoded image, which includes information on the absorption and/or scattering caused by the material and structural attributes of the object. The encoded image is decoded to provide a reconstructed image of the object. Because the coded aperture mask includes multiple pinholes, the radiation intensity is greater than a comparable system employing a single pinhole, thereby enabling a higher resolution. Further, the decoding of the encoded image can be performed to generate multiple images of the object at different distances from the detector plane. Methods and programs for operating the imaging system are also disclosed.

  6. High resolution, shallow seismic reflection survey of the Pen Branch fault

    SciTech Connect (OSTI)

    Stieve, A.

    1991-05-15

    The purpose of this project, at the Savannah River River Site (SRS) was to acquire, process, and interpret 28 km (17.4 miles) of high resolution seismic reflection data taken across the trace of the Pen Branch fault and other suspected, intersecting north-south trending faults. The survey was optimized for the upper 300 ft of geologic strata in order to demonstrate the existence of very shallow, flat lying horizons, and to determine the depth of the fault or to sediments deformed by the fault. Field acquisition and processing parameters were selected to define small scale spatial variability and structural features in the vicinity of the Pen Branch fault leading to the definition and the location of the Pen Branch fault, the shallowest extent of the fault, and the quantification of the sense and magnitude of motion. Associated geophysical, borehole, and geologic data were incorporated into the investigation to assist in the determination of optimal parameters and aid in the interpretation.

  7. A CATALOG OF NEAR-IR SOURCES FOUND TO BE UNRESOLVED WITH MILLIARCSECOND RESOLUTION

    SciTech Connect (OSTI)

    Richichi, A.; Fors, O.; Cusano, F.; Moerchen, M.

    2012-12-15

    Calibration is one of the long-standing problems in optical interferometric measurements, particularly with long baselines which demand stars with angular sizes on the milliarcsecond scale and no detectable companions. While systems of calibrators have been generally established for the near-infrared in the bright source regime (K {approx}< 3 mag), modern large interferometers are sensitive to significantly fainter magnitudes. We aim to provide a list of sources found to be unresolved from direct observations with high angular resolution and dynamic range, which can be used to choose interferometric calibrators. To this purpose, we have used a large number of lunar occultations recorded with the ISAAC instrument at the Very Large Telescope to select sources found to be unresolved and without close companions. An algorithm has been used to determine the limiting angular resolution achieved for each source, taking into account a noise model built from occulted and unocculted portions of the light curves. We have obtained upper limits on the angular sizes of 556 sources, with magnitudes ranging from K{sub s} Almost-Equal-To 4 to 10, with a median of 7.2 mag. The upper limits on possible undetected companions (within Almost-Equal-To 0.''5) range from K{sub s} Almost-Equal-To 8 to 13, with a median of 11.5 mag. One-third of the sources have angular sizes {<=}1 mas, and two-thirds have sizes {<=}2 mas. This list of unresolved sources matches well the capabilities of current large interferometric facilities. We also provide available cross-identifications, magnitudes, spectral types, and other auxiliary information. A fraction of the sources are found to be potentially variable. The list covers parts of the Galactic Bulge and in particular the vicinity of the Galactic Center, where extinction is very significant and traditional lists of calibrators are often insufficient.

  8. A HIGH-RESOLUTION ATLAS OF URANIUM-NEON IN THE H BAND

    SciTech Connect (OSTI)

    Redman, Stephen L.; Terrien, Ryan; Mahadevan, Suvrath; Ramsey, Lawrence W.; Bender, Chad F. [Department of Astronomy and Astrophysics, Pennsylvania State University, University Park, PA 16802 (United States); Ycas, Gabriel G. [Department of Physics, University of Colorado, Boulder, CO 80309 (United States); Osterman, Steven N. [Center for Astrophysics and Space Astronomy, University of Colorado, Boulder, CO 80309 (United States); Diddams, Scott A.; Quinlan, Franklyn [Time and Frequency Division, National Institute of Standards and Technology, Boulder, CO 80305 (United States); Lawler, James E. [Department of Physics, University of Wisconsin, 1150 University Avenue, Madison, WI 53706 (United States); Nave, Gillian [Atomic Physics Division, National Institute of Standards and Technology, Gaithersburg, MD 20899 (United States)

    2012-03-01

    We present a high-resolution (R Almost-Equal-To 50,000) atlas of a uranium-neon (U/Ne) hollow-cathode spectrum in the H band (1454-1638 nm) for the calibration of near-infrared spectrographs. We obtained this U/Ne spectrum simultaneously with a laser-frequency comb spectrum, which we used to provide a first-order calibration to the U/Ne spectrum. We then calibrated the U/Ne spectrum using the recently published uranium line list of Redman et al., which is derived from high-resolution Fourier transform spectrometer measurements. These two independent calibrations allowed us to easily identify emission lines in the hollow-cathode lamp that do not correspond to known (classified) lines of either uranium or neon, and to compare the achievable precision of each source. Our frequency comb precision was limited by modal noise and detector effects, while the U/Ne precision was limited primarily by the signal-to-noise ratio (S/N) of the observed emission lines and our ability to model blended lines. The standard deviation in the dispersion solution residuals from the S/N-limited U/Ne hollow-cathode lamp was 50% larger than the standard deviation of the dispersion solution residuals from the modal-noise-limited laser-frequency comb. We advocate the use of U/Ne lamps for precision calibration of near-infrared spectrographs, and this H-band atlas makes these lamps significantly easier to use for wavelength calibration.

  9. 100 muas RESOLUTION VLBI IMAGING OF ANISOTROPIC INTERSTELLAR SCATTERING TOWARD PULSAR B0834+06

    SciTech Connect (OSTI)

    Brisken, W. F.; Deller, A. T.; Macquart, J.-P.; Tingay, S. J.; Gao, J. J.; Rickett, B. J.; Coles, W. A.; West, C. J.

    2010-01-01

    We have invented a novel technique to measure the radio image of a pulsar scattered by the interstellar plasma with 0.1 mas resolution. We extend the 'secondary spectrum' analysis of parabolic arcs by Stinebring et al. to very long baseline interferometry and, when the scattering is anisotropic, we are able to map the scattered brightness astrometrically with much higher resolution than the diffractive limit of the interferometer. We employ this technique to measure an extremely anisotropic scattered image of the pulsar B0834+06 at 327 MHz. We find that the scattering occurs in a compact region about 420 pc from the Earth. This image has two components, both essentially linear and nearly parallel. The primary feature, which is about 16 AU long and less than 0.5 AU in width, is highly inhomogeneous on spatial scales as small as 0.05 AU. The second feature is much fainter and is displaced from the axis of the primary feature by about 9 AU. We find that the velocity of the scattering plasma is 16 +- 10 km s{sup -1} approximately parallel to the axis of the linear feature. The origin of the observed anisotropy is unclear and we discuss two very different models. It could be, as has been assumed in earlier work, that the turbulence on spatial scales of (approx1000 km) is homogeneous but anisotropic. However, it may be that the turbulence on these scales is homogeneous and isotropic but the anisotropy is produced by highly elongated (filamentary) inhomogeneities of scale 0.05-16 AU.

  10. High-resolution structure of a retroviral protease folded as a monomer

    SciTech Connect (OSTI)

    Gilski, Miroslaw [A. Mickiewicz University, 60-780 Poznan (Poland); Polish Academy of Sciences, 61-704 Poznan (Poland); Kazmierczyk, Maciej; Krzywda, Szymon [A. Mickiewicz University, 60-780 Poznan (Poland); Zbransk, Helena [Academy of Sciences of the Czech Republic, 166 10 Prague (Czech Republic); Cooper, Seth; Popovi?, Zoran [University of Washington, Box 352350, Seattle, WA 98195 (United States); Khatib, Firas; DiMaio, Frank; Thompson, James; Baker, David [University of Washington, Box 357350, Seattle, WA 98195 (United States); Pichov, Iva [Academy of Sciences of the Czech Republic, 166 10 Prague (Czech Republic); Jaskolski, Mariusz, E-mail: mariuszj@amu.edu.pl [A. Mickiewicz University, 60-780 Poznan (Poland); Polish Academy of Sciences, 61-704 Poznan (Poland)

    2011-11-01

    The crystal structure of MasonPfizer monkey virus protease folded as a monomer has been solved by molecular replacement using a model generated by players of the online game Foldit. The structure shows at high resolution the details of a retroviral protease folded as a monomer which can guide rational design of protease dimerization inhibitors as retroviral drugs. MasonPfizer monkey virus (M-PMV), a D-type retrovirus assembling in the cytoplasm, causes simian acquired immunodeficiency syndrome (SAIDS) in rhesus monkeys. Its pepsin-like aspartic protease (retropepsin) is an integral part of the expressed retroviral polyproteins. As in all retroviral life cycles, release and dimerization of the protease (PR) is strictly required for polyprotein processing and virion maturation. Biophysical and NMR studies have indicated that in the absence of substrates or inhibitors M-PMV PR should fold into a stable monomer, but the crystal structure of this protein could not be solved by molecular replacement despite countless attempts. Ultimately, a solution was obtained in mr-rosetta using a model constructed by players of the online protein-folding game Foldit. The structure indeed shows a monomeric protein, with the N- and C-termini completely disordered. On the other hand, the flap loop, which normally gates access to the active site of homodimeric retropepsins, is clearly traceable in the electron density. The flap has an unusual curled shape and a different orientation from both the open and closed states known from dimeric retropepsins. The overall fold of the protein follows the retropepsin canon, but the C{sup ?} deviations are large and the active-site DTG loop (here NTG) deviates up to 2.7 from the standard conformation. This structure of a monomeric retropepsin determined at high resolution (1.6 ) provides important extra information for the design of dimerization inhibitors that might be developed as drugs for the treatment of retroviral infections, including AIDS.

  11. Rapid production of optimal-quality reduced-resolution representations of very large databases

    DOE Patents [OSTI]

    Sigeti, David E.; Duchaineau, Mark; Miller, Mark C.; Wolinsky, Murray; Aldrich, Charles; Mineev-Weinstein, Mark B.

    2001-01-01

    View space representation data is produced in real time from a world space database representing terrain features. The world space database is first preprocessed. A database is formed having one element for each spatial region corresponding to a finest selected level of detail. A multiresolution database is then formed by merging elements and a strict error metric is computed for each element at each level of detail that is independent of parameters defining the view space. The multiresolution database and associated strict error metrics are then processed in real time for real time frame representations. View parameters for a view volume comprising a view location and field of view are selected. The error metric with the view parameters is converted to a view-dependent error metric. Elements with the coarsest resolution are chosen for an initial representation. Data set first elements from the initial representation data set are selected that are at least partially within the view volume. The first elements are placed in a split queue ordered by the value of the view-dependent error metric. If the number of first elements in the queue meets or exceeds a predetermined number of elements or whether the largest error metric is less than or equal to a selected upper error metric bound, the element at the head of the queue is force split and the resulting elements are inserted into the queue. Force splitting is continued until the determination is positive to form a first multiresolution set of elements. The first multiresolution set of elements is then outputted as reduced resolution view space data representing the terrain features.

  12. Detailed Hydrographic Feature Extraction from High-Resolution LiDAR Data

    SciTech Connect (OSTI)

    Danny L. Anderson

    2012-05-01

    Detailed hydrographic feature extraction from high-resolution light detection and ranging (LiDAR) data is investigated. Methods for quantitatively evaluating and comparing such extractions are presented, including the use of sinuosity and longitudinal root-mean-square-error (LRMSE). These metrics are then used to quantitatively compare stream networks in two studies. The first study examines the effect of raster cell size on watershed boundaries and stream networks delineated from LiDAR-derived digital elevation models (DEMs). The study confirmed that, with the greatly increased resolution of LiDAR data, smaller cell sizes generally yielded better stream network delineations, based on sinuosity and LRMSE. The second study demonstrates a new method of delineating a stream directly from LiDAR point clouds, without the intermediate step of deriving a DEM. Direct use of LiDAR point clouds could improve efficiency and accuracy of hydrographic feature extractions. The direct delineation method developed herein and termed mDn, is an extension of the D8 method that has been used for several decades with gridded raster data. The method divides the region around a starting point into sectors, using the LiDAR data points within each sector to determine an average slope, and selecting the sector with the greatest downward slope to determine the direction of flow. An mDn delineation was compared with a traditional grid-based delineation, using TauDEM, and other readily available, common stream data sets. Although, the TauDEM delineation yielded a sinuosity that more closely matches the reference, the mDn delineation yielded a sinuosity that was higher than either the TauDEM method or the existing published stream delineations. Furthermore, stream delineation using the mDn method yielded the smallest LRMSE.

  13. TH-A-BRF-09: Integration of High-Resolution MRSI Into Glioblastoma Treatment Planning

    SciTech Connect (OSTI)

    Schreibmann, E; Cordova, J; Shu, H; Crocker, I; Curran, W; Holder, C; Shim, H

    2014-06-15

    Purpose: Identification of a metabolite signature that shows significant tumor cell infiltration into normal brain in regions that do not appear abnormal on standard MRI scans would be extremely useful for radiation oncologists to choose optimal regions of brain to treat, and to quantify response beyond the MacDonald criteria. We report on integration of high-resolution magnetic resonance spectroscopic imaging (HR-MRSI) with radiation dose escalation treatment planning to define and target regions at high risk for recurrence. Methods: We propose to supplement standard MRI with a special technique performed on an MRI scanner to measure the metabolite levels within defined volumes. Metabolite imaging was acquired using an advanced MRSI technique combining 3D echo-planar spectroscopic imaging (EPSI) with parallel acquisition (GRAPPA) using a multichannel head coil that allows acquisition of whole brain metabolite maps with 108 μl resolution in 12 minutes implemented on a 3T MR scanner. Elevation in the ratio of two metabolites, choline (Cho, elevated in proliferating high-grade gliomas) and N-acetyl aspartate (NAA, a normal neuronal metabolite), was used to image infiltrating high-grade glioma cells in vivo. Results: The metabolite images were co-registered with standard contrast-enhanced T1-weighted MR images using in-house registration software and imported into the treatment-planning system. Regions with tumor infiltration are identified on the metabolic images and used to create adaptive IMRT plans that deliver a standard dose of 60 Gy to the standard target volume and an escalated dose of 75 Gy (or higher) to the most suspicious regions, identified as areas with elevated Cho/NAA ratio. Conclusion: We have implemented a state-of-the-art HR-MRSI technology that can generate metabolite maps of the entire brain in a clinically acceptable scan time, coupled with introduction of an imaging co-registration/ analysis program that combines MRSI data with standard imaging studies in a clinically useful fashion.

  14. Changes in Moisture Flux over the Tibetan Plateau during 1979-2011: Insights from a High Resolution Simulation

    SciTech Connect (OSTI)

    Gao, Yanhong; Leung, Lai-Yung R.; Zhang, Yongxin; Cuo, Lan

    2015-05-15

    Net precipitation (precipitation minus evapotranspiration, P-E) changes between 1979 and 2011 from a high resolution regional climate simulation and its reanalysis forcing are analyzed over the Tibet Plateau (TP) and compared to the global land data assimilation system (GLDAS) product. The high resolution simulation better resolves precipitation changes than its coarse resolution forcing, which contributes dominantly to the improved P-E change in the regional simulation compared to the global reanalysis. Hence, the former may provide better insights about the drivers of P-E changes. The mechanism behind the P-E changes is explored by decomposing the column integrated moisture flux convergence into thermodynamic, dynamic, and transient eddy components. High-resolution climate simulation improves the spatial pattern of P-E changes over the best available global reanalysis. High-resolution climate simulation also facilitates new and substantial findings regarding the role of thermodynamics and transient eddies in P-E changes reflected in observed changes in major river basins fed by runoff from the TP. The analysis revealed the contrasting convergence/divergence changes between the northwestern and southeastern TP and feedback through latent heat release as an important mechanism leading to the mean P-E changes in the TP.

  15. Development of fine-resolution analyses and expanded large-scale forcing properties. Part I: Methodology and evaluation

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

    Li, Zhijin; Vogelmann, Andrew M.; Feng, Sha; Liu, Yangang; Lin, Wuyin; Zhang, Minghua; Toto, Tami; Endo, Satoshi

    2015-01-20

    We produce fine-resolution, three-dimensional fields of meteorological and other variables for the U.S. Department of Energy’s Atmospheric Radiation Measurement (ARM) Southern Great Plains site. The Community Gridpoint Statistical Interpolation system is implemented in a multiscale data assimilation (MS-DA) framework that is used within the Weather Research and Forecasting model at a cloud-resolving resolution of 2 km. The MS-DA algorithm uses existing reanalysis products and constrains fine-scale atmospheric properties by assimilating high-resolution observations. A set of experiments show that the data assimilation analysis realistically reproduces the intensity, structure, and time evolution of clouds and precipitation associated with a mesoscale convective system.more » Evaluations also show that the large-scale forcing derived from the fine-resolution analysis has an overall accuracy comparable to the existing ARM operational product. For enhanced applications, the fine-resolution fields are used to characterize the contribution of subgrid variability to the large-scale forcing and to derive hydrometeor forcing, which are presented in companion papers.« less

  16. Development of fine-resolution analyses and expanded large-scale forcing properties. Part I: Methodology and evaluation

    SciTech Connect (OSTI)

    Li, Zhijin; Vogelmann, Andrew M.; Feng, Sha; Liu, Yangang; Lin, Wuyin; Zhang, Minghua; Toto, Tami; Endo, Satoshi

    2015-01-20

    We produce fine-resolution, three-dimensional fields of meteorological and other variables for the U.S. Department of Energy’s Atmospheric Radiation Measurement (ARM) Southern Great Plains site. The Community Gridpoint Statistical Interpolation system is implemented in a multiscale data assimilation (MS-DA) framework that is used within the Weather Research and Forecasting model at a cloud-resolving resolution of 2 km. The MS-DA algorithm uses existing reanalysis products and constrains fine-scale atmospheric properties by assimilating high-resolution observations. A set of experiments show that the data assimilation analysis realistically reproduces the intensity, structure, and time evolution of clouds and precipitation associated with a mesoscale convective system. Evaluations also show that the large-scale forcing derived from the fine-resolution analysis has an overall accuracy comparable to the existing ARM operational product. For enhanced applications, the fine-resolution fields are used to characterize the contribution of subgrid variability to the large-scale forcing and to derive hydrometeor forcing, which are presented in companion papers.

  17. Ionized gas kinematics at high resolution. IV. Star formation and a rotating core in the Medusa (NGC 4194)

    SciTech Connect (OSTI)

    Beck, Sara C.; Lacy, John; Turner, Jean; Greathouse, Thomas; Neff, Susan

    2014-05-20

    NGC 4194 is a post-merger starburst known as The Medusa for its striking tidal features. We present here a detailed study of the structure and kinematics of ionized gas in the central 0.65 kpc of the Medusa. The data include radio continuum maps with resolution up to 0.''18 (35 pc) and a 12.8 ?m [Ne II] data cube with spectral resolution ?4 km s{sup 1}: the first high-resolution, extinction-free observations of this remarkable object. The ionized gas has the kinematic signature of a core in solid-body rotation. The starburst has formed a complex of bright compact H II regions, probably excited by deeply embedded super star clusters, but none of these sources is a convincing candidate for a Galactic nucleus. The nuclei of the merger partners that created the Medusa have not yet been identified.

  18. Methods and apparatus for multi-resolution replication of files in a parallel computing system using semantic information

    DOE Patents [OSTI]

    Faibish, Sorin; Bent, John M.; Tzelnic, Percy; Grider, Gary; Torres, Aaron

    2015-10-20

    Techniques are provided for storing files in a parallel computing system using different resolutions. A method is provided for storing at least one file generated by a distributed application in a parallel computing system. The file comprises one or more of a complete file and a sub-file. The method comprises the steps of obtaining semantic information related to the file; generating a plurality of replicas of the file with different resolutions based on the semantic information; and storing the file and the plurality of replicas of the file in one or more storage nodes of the parallel computing system. The different resolutions comprise, for example, a variable number of bits and/or a different sub-set of data elements from the file. A plurality of the sub-files can be merged to reproduce the file.

  19. Novel Large Area High Resolution Neutron Detector for the Spallation Neutron Source

    SciTech Connect (OSTI)

    Lacy, Jeffrey L

    2009-05-22

    Neutron scattering is a powerful technique that is critically important for materials science and structural biology applications. The knowledge gained from past developments has resulted in far-reaching advances in engineering, pharmaceutical and biotechnology industries, to name a few. New facilities for neutron generation at much higher flux, such as the SNS at Oak Ridge, TN, will greatly enhance the capabilities of neutron scattering, with benefits that extend to many fields and include, for example, development of improved drug therapies and materials that are stronger, longer-lasting, and more impact-resistant. In order to fully realize this enhanced potential, however, higher neutron rates must be met with improved detection capabilities, particularly higher count rate capability in large size detectors, while maintaining practicality. We have developed a neutron detector with the technical and economic advantages to accomplish this goal. This new detector has a large sensitive area, offers 3D spatial resolution, high sensitivity and high count rate capability, and it is economical and practical to produce. The proposed detector technology is based on B-10 thin film conversion of neutrons in long straw-like gas detectors. A stack of many such detectors, each 1 meter in length, and 4 mm in diameter, has a stopping power that exceeds that of He-3 gas, contained at practical pressures within an area detector. With simple electronic readout methods, straw detector arrays can provide spatial resolution of 4 mm FWHM or better, and since an array detector of such form consists of several thousand individual elements per square meter, count rates in a 1 m^2 detector can reach 2?10^7 cps. Moreover, each individual event can be timetagged with a time resolution of less than 0.1 ?sec, allowing accurate identification of neutron energy by time of flight. Considering basic elemental cost, this novel neutron imaging detector can be commercially produced economically, probably at a small fraction of the cost of He-3 detectors. In addition to neutron scattering science, the fully developed base technology can be used as a rugged, low-cost neutron detector in area monitoring and surveying. Radiation monitors are used in a number of other settings for occupational and environmental radiation safety. Such a detector can also be used in environmental monitoring and remote nuclear power plant monitoring. For example, the Department of Energy could use it to characterize nuclear waste dumps, coordinate clean-up efforts, and assess the radioactive contaminants in the air and water. Radiation monitors can be used to monitor the age and component breakdown of nuclear warheads and to distinguish between weapons and reactor grade plutonium. The UN's International Atomic Energy Agency (IAEA) uses radiation monitors for treaty verification, remote monitoring, and enforcing the non-proliferation of nuclear weapons. As part of treaty verification, monitors can be used to certify the contents of containers during inspections. They could be used for portal monitoring to secure border checkpoints, sea ports, air cargo centers, public parks, sporting venues, and key government buildings. Currently, only 2% of all sea cargo shipped is inspected for radiation sources. In addition, merely the presence of radiation is detected and nothing is known about the radioactive source until further testing. The utilization of radiation monitors with neutron sensitivity and capability of operation in hostile port environments would increase the capacity and effectiveness of the radioactive scanning processes.

  20. High-Resolution Modeling to Assess Tropical Cyclone Activity in Future Climate Regimes

    SciTech Connect (OSTI)

    Lackmann, Gary

    2013-06-10

    Applied research is proposed with the following objectives: (i) to determine the most likely level of tropical cyclone intensity and frequency in future climate regimes, (ii) to provide a quantitative measure of uncertainty in these predictions, and (iii) to improve understanding of the linkage between tropical cyclones and the planetary-scale circulation. Current mesoscale weather forecasting models, such as the Weather Research and Forecasting (WRF) model, are capable of simulating the full intensity of tropical cyclones (TC) with realistic structures. However, in order to accurately represent both the primary and secondary circulations in these systems, model simulations must be configured with sufficient resolution to explicitly represent convection (omitting the convective parameterization scheme). Most previous numerical studies of TC activity at seasonal and longer time scales have not utilized such explicit convection (EC) model runs. Here, we propose to employ the moving nest capability of WRF to optimally represent TC activity on a seasonal scale using a downscaling approach. The statistical results of a suite of these high-resolution TC simulations will yield a realistic representation of TC intensity on a seasonal basis, while at the same time allowing analysis of the feedback that TCs exert on the larger-scale climate system. Experiments will be driven with analyzed lateral boundary conditions for several recent Atlantic seasons, spanning a range of activity levels and TC track patterns. Results of the ensemble of WRF simulations will then be compared to analyzed TC data in order to determine the extent to which this modeling setup can reproduce recent levels of TC activity. Next, the boundary conditions (sea-surface temperature, tropopause height, and thermal/moisture profiles) from the recent seasons will be altered in a manner consistent with various future GCM/RCM scenarios, but that preserves the large-scale shear and incipient disturbance activity. This will allow (i) a direct comparison of future TC activity that could be expected for an active or inactive season in an altered climate regime, and (ii) a measure of the level of uncertainty and variability in TC activity resulting from different carbon emission scenarios.

  1. MAINTAINING HIGH RESOLUTION MASS SPECTROMETRY CAPABILITIES FOR NATIONAL NUCLEAR SECURITY ADMINISTRATION APPLICATIONS

    SciTech Connect (OSTI)

    Wyrick, S.; Cordaro, J.; Reeves, G.; Mcintosh, J.; Mauldin, C.; Tietze, K.; Varble, D.

    2011-06-06

    The Department of Energy (DOE) National Nuclear Security Administration (NNSA) has a specialized need for analyzing low mass gas species at very high resolutions. The currently preferred analytical method is electromagnetic sector mass spectrometry. This method allows the NNSA Nuclear Security Enterprise (NSE) to resolve species of similar masses down to acceptable minimum detection limits (MDLs). Some examples of these similar masses are helium-4/deuterium and carbon monoxide/nitrogen. Through the 1980s and 1990s, there were two vendors who supplied and supported these instruments. However, with declining procurements and down turns in the economy, the supply of instruments, service and spare parts from these vendors has become less available, and in some cases, nonexistent. The largest NSE user of this capability is the Savannah River Site (SRS), located near Aiken, South Carolina. The Research and Development Engineering (R&DE) Group in the Savannah River National Laboratory (SRNL) investigated the areas of instrument support that were needed to extend the life cycle of these aging instruments. Their conclusions, as to the focus areas of electromagnetic sector mass spectrometers to address, in order of priority, were electronics, software and hardware. Over the past 3-5 years, the R&DE Group has designed state of the art electronics and software that will allow high resolution legacy mass spectrometers, critical to the NNSA mission, to be operated for the foreseeable future. The funding support for this effort has been from several sources, including the SRS Defense Programs, NNSA Readiness Campaign, Pantex Plant and Sandia National Laboratory. To date, electronics systems have been upgraded on one development system at SRNL, two production systems at Pantex and one production system at Sandia National Laboratory. An NSE working group meets periodically to review strategies going forward. The R&DE Group has also applied their work to the electronics for a Thermal Ionization Mass Spectrometer (TIMS) instrument, which applies a similar mass spectrometric technology for resolving high mass isotopes, such as plutonium and uranium. Due to non-compete clauses for DOE, all work has been performed and applied to instruments which are obsolete and are no longer supported by the original vendor.

  2. Estimating global and North American methane emissions with high spatial resolution using GOSAT satellite data

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

    Turner, A. J.; Jacob, D. J.; Wecht, K. J.; Maasakkers, J. D.; Lundgren, E.; Andrews, A. E.; Biraud, S. C.; Boesch, H.; Bowman, K. W.; Deutscher, N. M.; et al

    2015-06-30

    We use 2009–2011 space-borne methane observations from the Greenhouse Gases Observing SATellite (GOSAT) to estimate global and North American methane emissions with 4° × 5° and up to 50 km × 50 km spatial resolution, respectively. GEOS-Chem and GOSAT data are first evaluated with atmospheric methane observations from surface and tower networks (NOAA/ESRL, TCCON) and aircraft (NOAA/ESRL, HIPPO), using the GEOS-Chem chemical transport model as a platform to facilitate comparison of GOSAT with in situ data. This identifies a high-latitude bias between the GOSAT data and GEOS-Chem that we correct via quadratic regression. Our global adjoint-based inversion yields a totalmore » methane source of 539 Tg a−1 with some important regional corrections to the EDGARv4.2 inventory used as a prior. Results serve as dynamic boundary conditions for an analytical inversion of North American methane emissions using radial basis functions to achieve high resolution of large sources and provide error characterization. We infer a US anthropogenic methane source of 40.2–42.7 Tg a−1, as compared to 24.9–27.0 Tg a−1 in the EDGAR and EPA bottom-up inventories, and 30.0–44.5 Tg a−1 in recent inverse studies. Our estimate is supported by independent surface and aircraft data and by previous inverse studies for California. We find that the emissions are highest in the southern–central US, the Central Valley of California, and Florida wetlands; large isolated point sources such as the US Four Corners also contribute. Using prior information on source locations, we attribute 29–44 % of US anthropogenic methane emissions to livestock, 22–31 % to oil/gas, 20 % to landfills/wastewater, and 11–15 % to coal. Wetlands contribute an additional 9.0–10.1 Tg a−1.« less

  3. Fluid simulations with atomistic resolution: a hybrid multiscale method with field-wise coupling

    SciTech Connect (OSTI)

    Borg, Matthew K. [Department of Mechanical and Aerospace Engineering, University of Strathclyde, Glasgow G1 1XJ (United Kingdom)] [Department of Mechanical and Aerospace Engineering, University of Strathclyde, Glasgow G1 1XJ (United Kingdom); Lockerby, Duncan A., E-mail: duncan.lockerby@warwick.ac.uk [School of Engineering, University of Warwick, Coventry CV4 7AL (United Kingdom); Reese, Jason M., E-mail: jason.reese@strath.ac.uk [Department of Mechanical and Aerospace Engineering, University of Strathclyde, Glasgow G1 1XJ (United Kingdom)

    2013-12-15

    We present a new hybrid method for simulating dense fluid systems that exhibit multiscale behaviour, in particular, systems in which a NavierStokes model may not be valid in parts of the computational domain. We apply molecular dynamics as a local microscopic refinement for correcting the NavierStokes constitutive approximation in the bulk of the domain, as well as providing a direct measurement of velocity slip at bounding surfaces. Our hybrid approach differs from existing techniques, such as the heterogeneous multiscale method (HMM), in some fundamental respects. In our method, the individual molecular solvers, which provide information to the macro model, are not coupled with the continuum grid at nodes (i.e. point-wise coupling), instead coupling occurs over distributed heterogeneous fields (here referred to as field-wise coupling). This affords two major advantages. Whereas point-wise coupled HMM is limited to regions of flow that are highly scale-separated in all spatial directions (i.e. where the state of non-equilibrium in the fluid can be adequately described by a single strain tensor and temperature gradient vector), our field-wise coupled HMM has no such limitations and so can be applied to flows with arbitrarily-varying degrees of scale separation (e.g. flow from a large reservoir into a nano-channel). The second major advantage is that the position of molecular elements does not need to be collocated with nodes of the continuum grid, which means that the resolution of the microscopic correction can be adjusted independently of the resolution of the continuum model. This in turn means the computational cost and accuracy of the molecular correction can be independently controlled and optimised. The macroscopic constraints on the individual molecular solvers are artificial body-force distributions, used in conjunction with standard periodicity. We test our hybrid method on the Poiseuille flow problem for both Newtonian (Lennard-Jones) and non-Newtonian (FENE) fluids. The multiscale results are validated with expensive full-scale molecular dynamics simulations of the same case. Very close agreement is obtained for all cases, with as few as two micro elements required to accurately capture both the Newtonian and non-Newtonian flowfields. Our multiscale method converges very quickly (within 34 iterations) and is an order of magnitude more computationally efficient than the full-scale simulation.

  4. High Resolution/High Fidelity Seismic Imaging and Parameter Estimation for Geological Structure and Material Characterization

    SciTech Connect (OSTI)

    Ru-Shan Wu; Xiao-Bi Xie

    2008-06-08

    Our proposed work on high resolution/high fidelity seismic imaging focused on three general areas: (1) development of new, more efficient, wave-equation-based propagators and imaging conditions, (2) developments towards amplitude-preserving imaging in the local angle domain, in particular, imaging methods that allow us to estimate the reflection as a function of angle at a layer boundary, and (3) studies of wave inversion for local parameter estimation. In this report we summarize the results and progress we made during the project period. The report is divided into three parts, totaling 10 chapters. The first part is on resolution analysis and its relation to directional illumination analysis. The second part, which is composed of 6 chapters, is on the main theme of our work, the true-reflection imaging. True-reflection imaging is an advanced imaging technology which aims at keeping the image amplitude proportional to the reflection strength of the local reflectors or to obtain the reflection coefficient as function of reflection-angle. There are many factors which may influence the image amplitude, such as geometrical spreading, transmission loss, path absorption, acquisition aperture effect, etc. However, we can group these into two categories: one is the propagator effect (geometric spreading, path losses); the other is the acquisition-aperture effect. We have made significant progress in both categories. We studied the effects of different terms in the true-amplitude one-way propagators, especially the terms including lateral velocity variation of the medium. We also demonstrate the improvements by optimizing the expansion coefficients in different terms. Our research also includes directional illumination analysis for both the one-way propagators and full-wave propagators. We developed the fast acquisition-aperture correction method in the local angle-domain, which is an important element in the true-reflection imaging. Other developments include the super-wide angle one-way propagator and special full-wave reverse-time migration method. Finally, we studied the theoretical basis of true-reflection imaging and bridges imaging and inversion with the theory of diffraction tomography.

  5. Estimating global and North American methane emissions with high spatial resolution using GOSAT satellite data

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

    Turner, A. J.; Jacob, D. J.; Wecht, K. J.; Maasakkers, J. D.; Biraud, S. C.; Boesch, H.; Bowman, K. W.; Deutscher, N. M.; Dubey, M. K.; Griffith, D. W. T.; et al

    2015-02-18

    We use 2009–2011 space-borne methane observations from the Greenhouse Gases Observing SATellite (GOSAT) to constrain global and North American inversions of methane emissions with 4° × 5° and up to 50 km × 50 km spatial resolution, respectively. The GOSAT data are first evaluated with atmospheric methane observations from surface networks (NOAA, TCCON) and aircraft (NOAA/DOE, HIPPO), using the GEOS-Chem chemical transport model as a platform to facilitate comparison of GOSAT with in situ data. This identifies a high-latitude bias between the GOSAT data and GEOS-Chem that we correct via quadratic regression. The surface and aircraft data are subsequently usedmore » for independent evaluation of the methane source inversions. Our global adjoint-based inversion yields a total methane source of 539 Tg a−1 and points to a large East Asian overestimate in the EDGARv4.2 inventory used as a prior. Results serve as dynamic boundary conditions for an analytical inversion of North American methane emissions using radial basis functions to achieve high resolution of large sources and provide full error characterization. We infer a US anthropogenic methane source of 40.2–42.7 Tg a−1, as compared to 24.9–27.0 Tg a−1 in the EDGAR and EPA bottom-up inventories, and 30.0–44.5 Tg a−1 in recent inverse studies. Our estimate is supported by independent surface and aircraft data and by previous inverse studies for California. We find that the emissions are highest in the South-Central US, the Central Valley of California, and Florida wetlands, large isolated point sources such as the US Four Corners also contribute. We attribute 29–44% of US anthropogenic methane emissions to livestock, 22–31% to oil/gas, 20% to landfills/waste water, and 11–15% to coal with an additional 9.0–10.1 Tg a−1 source from wetlands.« less

  6. Final Technical Report for DE-FG02-06ER15835: Chemical Imaging with 100nm Spatial Resolution: Combining High Resolution Flurosecence Microscopy and Ion Mobility Mass Spectrometry

    SciTech Connect (OSTI)

    Buratto, Steven K.

    2013-09-03

    We have combined, in a single instrument, high spatial resolution optical microscopy with the chemical specificity and conformational selectivity of ion mobility mass spectrometry. We discuss the design and construction of this apparatus as well as our efforts in applying this technique to thin films of molecular semiconductor materials.

  7. Back-scattering channel-cut high-resolution monochromator for inelastic x-ray scattering

    SciTech Connect (OSTI)

    Kushnir, V.I.; Abbamonte, P.M.; Macrander, A.T.; Schwoerer-Boehning, M.

    1997-08-01

    We report on a design and on some experimental results for the performance of a new high energy resolution monochromator. It is a large channel-cut Si crystal with a 197 mm separation between the two faces designed to operate in a near-backscattering regime. The device was tested as a second monochromator on Sector 3 of the Synchrotron Radiation Instrumentation Collaborative Access Team (SRI-CAT) at the Advanced Photon Source using the Si(777) reflection at a photon energy of 13.84 keV. The same monochromator can be used for other energies with reflections of the type (hhh). Special care has been taken to equalize the temperature of the two faces by employing a Peltier heat pump. A Si(111) double-crystal pre-monochromator designed to withstand the high heat load of the undulator radiation was used upstream on the beamline. The measured throughput efficiency of the Si(777) channel-cut monochromator was less ideal by a factor of 1.9. Dynamical diffraction theory was used to calculate the throughput of an ideally perfect crystal.

  8. High resolution capillary column development for selective separations in gas chromatography

    SciTech Connect (OSTI)

    Przybyciel, M.

    1985-01-01

    A review of techniques for the preparation of high resolution capillary columns for gas chromatography is presented. Surface roughing, surface deactivation, stationary phase coating, and stationary phase crosslinking are discussed. Criteria for the selection of GC stationary phases and procedures for column evaluation are presented. A method is proposed for the isolation and determination of crude oil contamination in tropical plants and sediments. The method uses Florisil (TM) chromatography for the simultaneous clean-up and fractionation of aliphatic and aromatic hydrocarbons. Crosslinked SE-54 fused silica capillary columns prepared in our laboratory were employed for all GC separations. Mass spectrometry was used to help locate and identify specific oil components despite the intense background of the chromatogram. Crude oil components were identified in extracts of mangrove plant samples collected from the Peck Slip oil spill site at Media Munda, Puerto Rico. Crude oil components were also identified in sediment samples from controlled oil spill of Prudhoe Bay oil at Laguna de Chiriqui, Panama.

  9. High-resolution thermal expansion measurements under helium-gas pressure

    SciTech Connect (OSTI)

    Manna, Rudra Sekhar; Wolf, Bernd; Souza, Mariano de; Lang, Michael

    2012-08-15

    We report on the realization of a capacitive dilatometer, designed for high-resolution measurements of length changes of a material for temperatures 1.4 K Less-Than-Or-Slanted-Equal-To T Less-Than-Or-Slanted-Equal-To 300 K and hydrostatic pressure P Less-Than-Or-Slanted-Equal-To 250 MPa. Helium ({sup 4}He) is used as a pressure-transmitting medium, ensuring hydrostatic-pressure conditions. Special emphasis has been given to guarantee, to a good approximation, constant-pressure conditions during temperature sweeps. The performance of the dilatometer is demonstrated by measurements of the coefficient of thermal expansion at pressures P Asymptotically-Equal-To 0.1 MPa (ambient pressure) and 104 MPa on a single crystal of azurite, Cu{sub 3}(CO{sub 3}){sub 2}(OH){sub 2}, a quasi-one-dimensional spin S = 1/2 Heisenberg antiferromagnet. The results indicate a strong effect of pressure on the magnetic interactions in this system.

  10. Practical high resolution detection method for laser-induced breakdown spectroscopy

    SciTech Connect (OSTI)

    Andrew J. Effenberger Jr; Jill R. Scott

    2012-02-01

    A Fabry-Perot etalon was coupled to a Czerny-Turner spectrometer to acquire high-resolution measurements in laser-induced breakdown spectroscopy (LIBS). The spectrometer was built using an inexpensive etalon coupled to a standard 0.5-m imaging spectrometer. The Hg emission doublet at 313.2 nm was used to evaluate instrument performance because it has a splitting of 29 pm. The 313.2 nm doublet was chosen due to the similar splitting seen in isotope splitting from uranium at 424.437 nm, which is 25 pm. The Hg doublet was easily resolved from a continuous source Hg-lamp with a 2 s acquisition. The doublet was also resolved in LIBS spectra of cinnabar (HgS) from the accumulation of 600 laser shots at rate of 10 Hz, or 1 min, under a helium atmosphere. In addition to observed spitting of the 313.2 nm Hg doublet, the FWHM of the 313.1844 nm line from the doublet is reported at varying He atmospheric pressures. The high performance, low cost, and compact footprint makes this system highly competitive with 2-m double pass Czerny-Turner spectrometers.

  11. Upgrades of the high resolution imaging x-ray crystal spectrometers on experimental advanced superconducting tokamak

    SciTech Connect (OSTI)

    Lu, B.; Wang, F.; Fu, J.; Li, Y.; Wan, B.; Shi, Y.; Bitter, M.; Hill, K. W.; Lee, S. G.

    2012-10-15

    Two imaging x-ray crystal spectrometers, the so-called 'poloidal' and 'tangential' spectrometers, were recently implemented on experimental advanced superconducting tokamak (EAST) to provide spatially and temporally resolved impurity ion temperature (T{sub i}), electron temperature (T{sub e}) and rotation velocity profiles. They are derived from Doppler width of W line for Ti, the intensity ratio of Li-like satellites to W line for Te, and Doppler shift of W line for rotation. Each spectrometer originally consisted of a spherically curved crystal and a two-dimensional multi-wire proportional counter (MWPC) detector. Both spectrometers have now been upgraded. The layout of the tangential spectrometer was modified, since it had to be moved to a different port, and the spectrometer was equipped with two high count rate Pilatus detectors (Model 100 K) to overcome the count rate limitation of the MWPC and to improve its time resolution. The poloidal spectrometer was equipped with two spherically bent crystals to record the spectra of He-like and H-like argon simultaneously and side by side on the original MWPC. These upgrades are described, and new results from the latest EAST experimental campaign are presented.

  12. Experimental Investigation and High Resolution Simulation of In-Situ Combustion Processes

    SciTech Connect (OSTI)

    Margot Gerritsen; Tony Kovscek

    2008-04-30

    This final technical report describes work performed for the project 'Experimental Investigation and High Resolution Numerical Simulator of In-Situ Combustion Processes', DE-FC26-03NT15405. In summary, this work improved our understanding of in-situ combustion (ISC) process physics and oil recovery. This understanding was translated into improved conceptual models and a suite of software algorithms that extended predictive capabilities. We pursued experimental, theoretical, and numerical tasks during the performance period. The specific project objectives were (i) identification, experimentally, of chemical additives/injectants that improve combustion performance and delineation of the physics of improved performance, (ii) establishment of a benchmark one-dimensional, experimental data set for verification of in-situ combustion dynamics computed by simulators, (iii) develop improved numerical methods that can be used to describe in-situ combustion more accurately, and (iv) to lay the underpinnings of a highly efficient, 3D, in-situ combustion simulator using adaptive mesh refinement techniques and parallelization. We believe that project goals were met and exceeded as discussed.

  13. A 5.5-Mb high-resolution integrated map of distal 11q13

    SciTech Connect (OSTI)

    Merscher, S.; Bekri, S.; De Leeuw, B.

    1997-02-01

    The distal part of 11q13, which contains several genes relevant to human diseases, has been poorly mapped as part of genome-wide mapping efforts. In the prospect of drawing a fine-scale integrated map of the area containing KRN1 and OMP, we have established a framework of markers by hybridization to DNA of somatic cell hybrids and by fluorescence in situ hybridization (FISH) on metaphase chromosomes. The probes studied were used to isolate 27 YACs and 16 cosmids that could be organized in three contigs covering approximately 6 Mb. These contigs were separated by two gaps that are likely to contain sequences underrepresented in YAC libraries. They were then integrated based on long-range restriction mapping and DNA-fiber FISH into a high-resolution physical map, which covers a 5.5-Mb region and includes 36 anonymous markers and 10 genes. This map will be used to search for genes within the 2/3 of this region where none have been localized as yet. It will also lay the ground for the characterization of an amplicon surrounding GARP in breast cancer and for the search of disease genes within this region. 42 refs., 2 figs., 2 tabs.

  14. Probe diagnostics of electron distributions in plasma with spatial and angular resolution

    SciTech Connect (OSTI)

    Demidov, V. I.; Kudryavtsev, A. A. [St. Petersburg State University, St. Petersburg 199034, Russia and ITMO University, Kronverkskiy pr. 49, St. Petersburg 197101 (Russian Federation)

    2014-09-15

    This paper discusses the spatial resolution that is required to study inhomogeneous, low-temperature plasmas and is based on a review of low-temperature plasma electron kinetics and methods for probe measurements of electron energy distribution functions (EEDFs). It is stated that EEDFs can be extracted from probe measurements by applying an appropriate probe theory. The Druyvesteyn formula is most commonly used for this extraction and has been used in numerous publications, but more general theory can be used for a wider range of gas pressures. It is demonstrated that the Druyvesteyn formula can be obtained from the general theory as a limiting case. This paper justifies the application of wall probes in plasma studies of an energetic part of EEDFs. This justification is made for an idealized probe. We briefly review the methods for studying anisotropic plasmas and their usefulness in plasma research. It is demonstrated that to determine anisotropic electron energy distribution functions, a planar, one-sided probe is most convenient.

  15. THE STAR-FORMATION RELATION FOR REGIONS IN THE GALACTIC PLANE: THE EFFECT OF SPATIAL RESOLUTION

    SciTech Connect (OSTI)

    Vutisalchavakul, Nalin; Evans II, Neal J.; Battersby, Cara

    2014-12-20

    We examined the relations between molecular gas surface density and star-formation rate surface density in an 11deg{sup 2} region of the Galactic plane. Dust continua at 1.1mm from the Bolocam Galactic Plane Survey and 22 ?m emission from the Wide-field Infrared Survey Explorer (WISE) all-sky survey were used as tracers of molecular gas and the star-formation rate, respectively, across the Galactic longitude of 31.5 ? l ? 20.5 and Galactic latitude of 0.5 ? b ? 0.5. The relation was studied over a range of resolutions from 33'' to 20' by convolving images to larger scales. The pixel-by-pixel correlation between 1.1mm and 22 ?m increases rapidly at small scales and levels off at the scale of 5'-8'. We studied the star-formation relation based on a pixel-by-pixel analysis and on an analysis of the 1.1mm and 22 ?m peaks. The star-formation relation was found to be nearly linear with no significant changes in the form of the relation across all spatial scales, and it lies above the extragalactic relation from Kennicutt. The average gas-depletion time is ?200 Myr and does not change significantly at different scales, but the scatter in the depletion time decreases as the scale increases.

  16. Nucleotide-binding flexibility in ultrahigh-resolution structures of the SRP GTPase Ffh

    SciTech Connect (OSTI)

    Ramirez, U.D.; Focia, P.J.; Freymann, D.M.

    2008-10-24

    Two structures of the nucleotide-bound NG domain of Ffh, the GTPase subunit of the bacterial signal recognition particle (SRP), have been determined at ultrahigh resolution in similar crystal forms. One is GDP-bound and one is GMPPCP-bound. The asymmetric unit of each structure contains two protein monomers, each of which exhibits differences in nucleotide-binding conformation and occupancy. The GDP-bound Ffh NG exhibits two binding conformations in one monomer but not the other and the GMPPCP-bound protein exhibits full occupancy of the nucleotide in one monomer but only partial occupancy in the other. Thus, under the same solution conditions, each crystal reveals multiple binding states that suggest that even when nucleotide is bound its position in the Ffh NG active site is dynamic. Some differences in the positioning of the bound nucleotide may arise from differences in the crystal-packing environment and specific factors that have been identified include the relative positions of the N and G domains, small conformational changes in the P-loop, the positions of waters buried within the active site and shifts in the closing loop that packs against the guanine base. However, 'loose' binding may have biological significance in promoting facile nucleotide exchange and providing a mechanism for priming the SRP GTPase prior to its activation in its complex with the SRP receptor.

  17. Appending High-Resolution Elevation Data to GPS Speed Traces for Vehicle Energy Modeling and Simulation

    SciTech Connect (OSTI)

    Wood, E.; Burton, E.; Duran, A.; Gonder, J.

    2014-06-01

    Accurate and reliable global positioning system (GPS)-based vehicle use data are highly valuable for many transportation, analysis, and automotive considerations. Model-based design, real-world fuel economy analysis, and the growing field of autonomous and connected technologies (including predictive powertrain control and self-driving cars) all have a vested interest in high-fidelity estimation of powertrain loads and vehicle usage profiles. Unfortunately, road grade can be a difficult property to extract from GPS data with consistency. In this report, we present a methodology for appending high-resolution elevation data to GPS speed traces via a static digital elevation model. Anomalous data points in the digital elevation model are addressed during a filtration/smoothing routine, resulting in an elevation profile that can be used to calculate road grade. This process is evaluated against a large, commercially available height/slope dataset from the Navteq/Nokia/HERE Advanced Driver Assistance Systems product. Results will show good agreement with the Advanced Driver Assistance Systems data in the ability to estimate road grade between any two consecutive points in the contiguous United States.

  18. CDF trigger final balance: Offline resolution at low level selections to fight against Tevatron increasing luminosity

    SciTech Connect (OSTI)

    Amerio, S.; /Padua U. /INFN, Padua

    2010-01-01

    The CDF detector at Tevatron collider is at present the most long-lasting high energy physics experiment. Since its first data taking in 1992 it has produced many results of primary importance, such as the discovery of top quark and, more recently, the observations of Bs oscillations and single-top production. None of them would have been possible without a fast and efficient trigger system. Based on a three level architecture, the CDF trigger takes decisions on simple calorimetric and tracking objects and assures both high efficiency on signal events and low dead time. It reduces the data flow rate from 2.53 MHz, the collision rate, to 150 Hz, the current limit on tape writing and is flexible enough to be easily adapted to the continuously growing instantaneous luminosity. In the last years the Tevatron instantaneous luminosity has rapidly increased and is now reaching 4 x 10{sup 32} cm{sup -2} s{sup -1}. The CDF trigger system has been widely upgraded to cope with increasing trigger rates. The upgrade result is online reconstruction of missing transverse energy, jets and tracks with a quality comparable to the offline one. Jet energy and direction can be precisely determined and tracks can be subjected to 3-D reconstruction with good resolution. These upgrades reduce high trigger rates to acceptable levels and have provided invaluable tools to increase the purity of the collected samples. They also represent a helpful experience for LHC experiments where background rates will be much more demanding.

  19. Hubble space telescope high-resolution imaging of Kepler small and cool exoplanet host stars

    SciTech Connect (OSTI)

    Gilliland, Ronald L.; Cartier, Kimberly M. S.; Wright, Jason T.; Adams, Elisabeth R.; Ciardi, David R.

    2015-01-01

    High-resolution imaging is an important tool for follow-up study of exoplanet candidates found via transit detection with the Kepler mission. We discuss here Hubble Space Telescope imaging with the WFC3 of 23 stars that host particularly interesting Kepler planet candidates based on their small size and cool equilibrium temperature estimates. Results include detections, exclusion of background stars that could be a source of false positives for the transits, and detection of physically associated companions in a number of cases providing dilution measures necessary for planet parameter refinement. For six Kepler objects of interest, we find that there is ambiguity regarding which star hosts the transiting planet(s), with potentially strong implications for planetary characteristics. Our sample is evenly distributed in G, K, and M spectral types. Albeit with a small sample size, we find that physically associated binaries are more common than expected at each spectral type, reaching a factor of 10 frequency excess in M. We document the program detection sensitivities, detections, and deliverables to the Kepler follow-up program archive.

  20. NGC 4102: HIGH-RESOLUTION INFRARED OBSERVATIONS OF A NUCLEAR STARBURST RING

    SciTech Connect (OSTI)

    Beck, Sara C.; Lacy, John H.; Turner, Jean L.

    2010-10-20

    The composite galaxy NGC 4102 hosts a LINER nucleus and a starburst. We mapped NGC 4102 in the 12.8 {mu}m line of [Ne II], using the echelon spectrometer TEXES on the NASA IRTF, to obtain a data cube with 1.''5 spatial, and 25 km s{sup -1} spectral, resolution. Combining near-infrared, radio, and the [Ne II] data shows that the extinction to the starburst is substantial, more than 2 mag at the K band, and that the neon abundance is less than half solar. We find that the star formation in the nuclear region is confined to a rotating ring or disk of 4.''3 ({approx}300 pc) diameter, inside the inner Lindblad resonance. This region is an intense concentration of mass, with a dynamical mass {approx}3 x 10{sup 9} M{sub sun}, and of star formation. The young stars in the ring produce the [Ne II] flux reported by Spitzer for the entire galaxy. The mysterious blue component of line emission detected in the near-infrared is also seen in [Ne II]; it is not a normal active galactic nucleus outflow.