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Sample records for wolfenstein carnegie-mellon uni

  1. structures. Hazra, Siddharth S. (Carnegie Mellon University,...

    Office of Scientific and Technical Information (OSTI)

    fracture in micron-scale polycrystalline silicon MEMS structures. Hazra, Siddharth S. (Carnegie Mellon University, Pittsburgh, PA); de Boer, Maarten Pieter (Carnegie Mellon...

  2. SHINES Kickoff Presentation- Carnegie Mellon University

    Energy.gov [DOE]

    Carnegie Mellon University delivered this presentation at the SHINES Technical Kickoff Meeting on May 19, 2016. Click the link below to download the slides in a PDF.

  3. PROJECT PROFILE: Carnegie Mellon University (SHINES) | Department of Energy

    Energy Saver

    Carnegie Mellon University (SHINES) PROJECT PROFILE: Carnegie Mellon University (SHINES) Title: Agent-Based Coordination Scheme For PV Integration (ABC4PV) Carnegie Mellon logo.jpg Funding Opportunity: Sustainable and Holistic Integration of Energy Storage and Solar PV SunShot Subprogram: Systems Integration Location: Pittsburgh, Pennsylvania Partners: NRECA, Aquion Energy Amount Awarded: $1,036,963 Awardee Cost Share: $1,038,083 This project will develop and demonstrate a distributed,

  4. Carnegie Mellon Launches Allegheny Region Cleantech University Prize |

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Department of Energy Carnegie Mellon Launches Allegheny Region Cleantech University Prize Carnegie Mellon Launches Allegheny Region Cleantech University Prize March 21, 2016 - 3:20pm Addthis Carnegie Mellon University recognized the University of Pennsylvania's DR-Advisor team as the top winner at its inaugural Allegheny Region Cleantech University Prize in March. Dr. Grace M. Bochenek, director of the National Energy Technology Laboratory (left) and Dr. Jared Cohon, director of Carnegie

  5. DOE - Office of Legacy Management -- Carnegie-Mellon Institute...

    Office of Legacy Management (LM)

    Designated Name: Not Designated Alternate Name: Carnegie-Mellon University, Nuclear ... and 1975 PA.09-2 PA.09-7 Radioactive Materials Handled: Yes Primary Radioactive ...

  6. Kevin Noonan > Asst. Professor - Carnegie Mellon University > Center Alumni

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    > The Energy Materials Center at Cornell Kevin Noonan Asst. Professor - Carnegie Mellon University noonan@andrew.cmu.edu Formerly a postdoc with the Coates Lab, he is now an at CMU working on research related to Polymer Chemistry, Organometallics, Homogeneous Catalysis and Organophosphorus Chemistry

  7. QER- Comment of Carnegie Mellon University

    Energy.gov [DOE]

    Hi John, I hope your other QER review sessions all went well. We very much enjoyed a chance to be a part of the tour. Attached please find the final version of Dr. Gellman’s presentation from July 21 panel discussion. Please let me know if we can provide any additional information or assist again with your efforts. Tim

  8. ENVIRONMENTAL INDICATORS FOR CARNEGIE MELLON UNIVERSITY:

    National Nuclear Security Administration (NNSA)

    ... commitment to quantity reduction FWD Stormwater 9.3.1 Runoff generated for a 30- min- ... Percent of rainfall that runs off as stormwater Indicates amount of rainfall runoff ...

  9. Stability of the Zagreb realization of the Carnegie-Mellon-Berkeley coupled-channels unitary model

    SciTech Connect

    Osmanovic, H.; Hadzimehmedovic, M.; Stahov, J.; Ceci, S.; Svarc, A.

    2011-09-15

    In Hadzimehmedovicet al.[Phys. Rev. C 84, 035204 (2011)] we have used the Zagreb realization of Carnegie-Melon-Berkeley coupled-channel, unitary model as a tool for extracting pole positions from the world collection of partial-wave data, with the aim of eliminating model dependence in pole-search procedures. In order that the method is sensible, we in this paper discuss the stability of the method with respect to the strong variation of different model ingredients. We show that the Zagreb CMB procedure is very stable with strong variation of the model assumptions and that it can reliably predict the pole positions of the fitted partial-wave amplitudes.

  10. Carnegie Mellon University Develops Innovative Way to Improve Thermal Management in LEDs

    Energy.gov [DOE]

    The accumulation of heat in LED packages gives rise to a cascade of detrimental effects that reduce the optical and mechanical performance of LED lighting products. For that reason, heat...

  11. DOE Selects Carnegie Mellon to Run Traineeship in Robotics | Department of

    Office of Environmental Management (EM)

    Technology | Department of Energy Approximately $1.3 Billion to Commercialize CCS Technology DOE Seeks to Invest Approximately $1.3 Billion to Commercialize CCS Technology June 24, 2008 - 2:15pm Addthis Funding Opportunity Announcement Solicits Applications for Restructured FutureGen Program WASHINGTON, DC - The U.S. Department of Energy (DOE) today issued a Funding Opportunity Announcement (FOA) to invest in multiple commercial-scale Integrated Gasification Combined Cycle (IGCC) or other

  12. Embedding the Zee-Wolfenstein neutrino mass matrix in an SO(10)xA{sub 4} GUT scenario

    SciTech Connect

    Grimus, Walter; Kuehboeck, Helmut

    2008-03-01

    We consider renormalizable SO(10) Yukawa interactions and put the three fermionic 16-plets into the 3-dimensional irreducible A{sub 4} representation. Scanning the possible A{sub 4} representation assignments to the scalars, we find a unique case which allows one to accommodate the down-quark and charged-lepton masses. Assuming type II seesaw dominance, we obtain a viable scenario with the Zee-Wolfenstein neutrino mass matrix, i.e., the Majorana mass matrix with a vanishing diagonal. Contributions from the charged-lepton mass matrix resolve the well-known problems with lepton mixing arising from the vanishing diagonal. In our scenario, fermion masses and mixings are well reproduced for both normal and inverted neutrino mass spectra, and b-{tau} Yukawa unification and definite predictions for the effective mass in neutrinoless double-{beta} decay are obtained.

  13. Uni Land | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    search Name: Uni Land Place: Bologna, Italy Zip: 40063 Sector: Solar Product: Italian property company, which buys land without permits and develops it for residential and...

  14. LDK Uni Land JV | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Uni Land JV Jump to: navigation, search Name: LDK & Uni Land JV Place: Italy Product: Italy-based JV to develop and construct PV projects. References: LDK & Uni Land JV1 This...

  15. UniSeed | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    to: navigation, search Name: UniSeed Place: Australia Sector: Services Product: General Financial & Legal Services ( Private family-controlled ) References: UniSeed1 This...

  16. Uni-Solar | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Type Test & Evaluation Partner Partnering Center within NREL National Center for Photovoltaics Uni-Solar is a company located in Auburn Hills, MI. References "Uni-Solar"...

  17. Cleantech University Prize Highlights Next Generation of Clean...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    ... Carnegie Mellon Launches Allegheny Region Cleantech University Prize Hyliion from Carnegie Mellon University won the 2015 top student DOE cleantech entrepreneur prize. Who will win ...

  18. TITLE AUTHORS SUBJECT SUBJECT RELATED DESCRIPTION PUBLISHER AVAILABILI...

    Office of Scientific and Technical Information (OSTI)

    Predicting fracture in micron scale polycrystalline silicon MEMS structures Hazra Siddharth S Carnegie Mellon University Pittsburgh PA de Boer Maarten Pieter Carnegie Mellon...

  19. Microsoft Word - Agenda 071910.doc

    Office of Environmental Management (EM)

    Carnegie Mellon University Software Engineering Institute 9:30 - 10:00 am Adapting the CERT Resilience Management Model to the Electricity Sector Carnegie Mellon University ...

  20. Uni Chem Co Ltd | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Korea (Republic)-based firm that manufactures and sells leather for a variety of functions. The firm has a solar subsidiary. References: Uni-Chem Co Ltd1 This article is a...

  1. UniRac Inc | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    87102-1545 Product: UniRac is a designer and manufacturer of stationary mounting structures for PV modules and arrays. Coordinates: 35.08418, -106.648639 Show Map Loading...

  2. Browse by Discipline -- E-print Network Subject Pathways: Fission...

    Office of Scientific and Technical Information (OSTI)

    (Kevin Kelly) - Department of Philosophy, Carnegie Mellon University Keniston, Kenneth (Kenneth Keniston) - Program in Science, Technology, and Society, Massachusetts Institute ...

  3. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    ... spin waves and enable the direct projection of optical computing concepts ... ; Department of Materials Science and Engineering, Carnegie Mellon ...

  4. Fermi National Accelerator Laboratory FY 2008

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    University Carnegie Mellon University, Pittsburgh University of Pennsylvania, Philadelphia University of Pittsburgh, Pittsburgh Puerto Rico University of Puerto Rico,...

  5. Fermi National Accelerator Laboratory FY 2010

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Bucknell University Carnegie Mellon University, Pittsburgh Temple University, Philadelphia University of Pennsylvania, Philadelphia University of Pittsburgh, Pittsburgh...

  6. UniTech Task Order Modifications - DT0010421 - Hanford Site

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    UniTech Task Order Modifications - DT0010421 DOE-RL Contracts/Procurements RL Contracts & Procurements Home Prime Contracts Current Solicitations Other Sources DOE RL Contracting Officers DOE RL Contracting Officer Representatives UniTech Task Order Modifications - DT0010421 Email Email Page | Print Print Page | Text Increase Font Size Decrease Font Size 0006 The purpose of this modification is to provide $334,072.91 of incremental funding for the base period, for line item 0002 WRPS Laundry

  7. BPA and Oregon BEST Launch New Prize Program for Energy Innovation...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Hyliion from Carnegie Mellon University won the 2015 top student DOE cleantech entrepreneur prize. Who will win in 2016? Universities Provide Pipeline of Talent, Ideas, and ...

  8. An Extensible Sensing and Control Platform for Building Energy...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    An Extensible Sensing and Control Platform for Building Energy Management An Extensible Sensing and Control Platform for Building Energy Management Lead Performer: Carnegie Mellon ...

  9. Past Seminars

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Mark J. Embrechts Rensselaer Polytechnic Institute Donald Dudziak A Brief History of Big Data Analytics 04222015 June Zhang Carnegie Mellon University David Mascarenas Impact of ...

  10. Quadrennial Energy Review

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Public Meeting 6: Monday, July 21, 2014 Rashid Auditorium - Hillman Center Carnegie Mellon University 4902 Forbes Avenue Pittsburgh, PA ACMP Talking Points ACMP Introduction ...

  11. Browse by Discipline -- E-print Network Subject Pathways: Physics...

    Office of Scientific and Technical Information (OSTI)

    ... - Department of Engineering and Public Policy, Carnegie Mellon University Fish, Jacob (Jacob Fish) - Department of Civil Engineering and Engineering Mechanics, Columbia ...

  12. Albany, OR * Anchorage, AK * Morgantown, WV * Pittsburgh, PA...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Carnegie Mellon University Penn State University University of Pittsburgh URS Virginia Tech West Virginia University Analytical chemist working with the inductively coupled plasma ...

  13. First-Generation Risk Profiles Help Predict CO2 Storage Site...

    Energy Saver

    Laboratory (NETL) and the NETL-Regional University Alliance (Carnegie Mellon University, Penn State, University of Pittsburgh, Virginia Tech, and West Virginia University). ...

  14. 06-2012 | netl.doe.gov

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    The Alliance partners are NETL, Carnegie Mellon University, Penn State, the University of Pittsburgh, Virginia Tech, West Virginia University, and URS Corporation. Looking back at ...

  15. ENGINEERING

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    URS Corporation and five nationally recognized universities: Carnegie Mellon University, Penn State, the University of Pittsburgh, Virginia Tech, and West Virginia University. ...

  16. Basic Research for the Hydrogen Fuel Initiative

    Energy.gov [DOE] (indexed site)

    PEM Fuel Cells Carnegie Mellon University Rapid Ab Initio Screening of Ternary Alloys for Hydrogen Production Rensselaer Polytechnic Institute Sol-Gel Based Polybenzimidazole...

  17. FE Carbon Capture and Storage News | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Engineer Earns Presidential Award for R&D That Could Help Meet DOE Carbon Capture Goals A Carnegie Mellon University professor who worked with the National Energy Technology...

  18. Electricity Advisory Committee

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    M. Granger Morgan Carnegie Mellon University Jeffery Morris Washington State House of Representatives Timothy Mount Cornell University Chris Peters Entergy Services Inc. ...

  19. Browse by Discipline -- E-print Network Subject Pathways: Fission...

    Office of Scientific and Technical Information (OSTI)

    Glymour) - Department of Philosophy, Carnegie Mellon University Godfrey-Smith, Peter (Peter Godfrey-Smith) - Department of Philosophy, Harvard University Goldberg, Fred M. (Fred ...

  20. "Title","Creator/Author","Publication Date","OSTI Identifier...

    Office of Scientific and Technical Information (OSTI)

    Predicting fracture in micron-scale polycrystalline silicon MEMS structures.","Hazra, Siddharth S. (Carnegie Mellon University, Pittsburgh, PA); de Boer, Maarten Pieter (Carnegie...

  1. Using DOE Tools

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    ... Data Accelerator - On Bill Financing - Benchmarking data analytics - Building retuning ... from Carnegie Mellon University Budget History CBEI BP3 (past) 212013 - 4302014 CBEI ...

  2. Center for Materials at Irradiation and Mechanical Extremes:...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Partner Institutions Los Alamos National Laboratory Massachusetts Institute of Technology University of Illinois, Urbana-Champaign Carnegie-Mellon University University of...

  3. Argonne National Laboratory, Stephen B. Pope of Cornell Uni-

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    J. Klippenstein of the Argonne National Laboratory, Stephen B. Pope of Cornell Uni- versity, William H. Green of MIT, Fred L. Dryer and Yiguang Ju of Princeton University, Jac- queline H. Chen, Nils Hansen and James A. Miller of the Sandia National Laboratories, Ron K. Hanson of Stanford University, Chih-Jen Sung of the University of Connecticut, Don G. Truhlar of the University of Minnesota, and Hai Wang and Fokion N. Egolfopoulos of the University of Southern California. (Continued on page 2)

  4. Theoretical study of the ferromagnetism in UNi sub 2

    SciTech Connect

    Severin, L.; Nordstroem, L. ); Brooks, M.S.S. ); Johansson, B. )

    1991-11-01

    Electronic-structure calculations for the ferromagnet UNi{sub 2} in the hexagonal MgZn{sub 2} structure ({ital C}14) are reported. In this treatment the uranium 5{ital f} electrons are considered as itinerant and are included in the self-consistent local-density calculations on the same footing as the other valence electrons. By adding the spin-orbit interaction and orbital polarization to the Hamiltonian, a substantial cancellation between the spin and orbital moments on the uranium atom is obtained. This is in good qualitative agreement with neutron-scattering experiments and can only be achieved by inclusion of the orbital polarization. From fixed-moment calculations, where the total magnetic moment is chosen to agree with data, a good agreement with the experimental uranium form factor is obtained. We emphasize the contribution of the 6{ital d} electrons to the uranium magnetic form factor for small {ital Q} vectors, which in fact gives rise to a substantial improvement of the agreement with data when compared to an unconstrained fit where only 5{ital f} contributions to the uranium magnetic density are taken into account. The magnetism in UNi{sub 2} is found to be driven by the uranium atoms, in contrast to the related system UFe{sub 2} in which it is caused by the iron atoms.

  5. UniSolar Jinneng Tianjin Energy Co Ltd | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    JV set-up between Tianjin Jinneng Investment, a Chinese VC investor, and United Solar Ovonic, US thin-film PV cell manufacturer. References: UniSolar Jinneng (Tianjin)...

  6. Variable mode bi-directional and uni-directional computer communication system

    DOEpatents

    Cornett, Frank N.; Jenkins, Philip N.; Bowman, Terrance L.; Placek, Joseph M.; Thorson, Gregory M.

    2004-12-14

    A variable communication systems comprising a plurality of transceivers and a control circuit connected to the transceivers to configure the transceivers to operate in a bi-directional mode and a uni-directional mode at different times using different transfer methods to transfer data.

  7. Close-Out Report of DOE Grant DE-FG02-91ER40682 for November 1, 2009 - April 30, 2013

    SciTech Connect

    Paulini, Manfred

    2013-07-20

    This document is the close-out report of Grant DE-FG02-91ER40682 from the Carnegie Mellon University (CMU) High-Energy Physics (HEP) Group to the U.S. Department of Energy (DOE).

  8. It Starts with Science...

    ScienceCinema

    Chu, Steven

    2016-07-12

    Secretary Chu sits down with a journalism student at Carnegie Mellon's Education City campus in Qatar to discuss the value of science in education and what attracted him to the study of Physics.

  9. CX-012245: Categorical Exclusion Determination

    Energy.gov [DOE]

    Hydro Research Foundation University Research Awards - Carnegie Mellon CX(s) Applied: A9 Date: 06/05/2014 Location(s): Pennsylvania Offices(s): Golden Field Office

  10. Microsoft Word - Chapter 12 - 2-10-11

    National Nuclear Security Administration (NNSA)

    ... 1976 B.S., Law Enforcement, Brigham Young University, 1970 Years of Experience: 30 Smith, Mark, Principal-In-Charge, Tetra Tech B.S., Civil Engineering, Carnegie Mellon ...

  11. U.S.-India Centre for Building Energy Research and Development (CBERD)

    Energy.gov [DOE]

    Lead Performer: Lawrence Berkeley National Laboratory – Berkeley, CAPartners: ​-- Centre for Environmental Planning and Technology University (CEPT University) - Ahmedabad, India-- Oak Ridge National Laboratory - Oak Ridge, TN-- University of California - Berkeley, CA-- Carnegie Mellon University - Pittsburgh, PA

  12. Browse by Discipline -- E-print Network Subject Pathways: Mathematics...

    Office of Scientific and Technical Information (OSTI)

    J K L M N O P Q R S T U V W X Y Z Ilic, Marija D. (Marija D. Ilic) - Department of Electrical and Computer Engineering, Carnegie Mellon University Go back to Individual Researchers ...

  13. It Starts with Science...

    Office of Energy Efficiency and Renewable Energy (EERE)

    Secretary Chu sits down with a journalism student at Carnegie Mellon's Education City campus in Qatar to discuss the value of science in education and what attracted him to the study of Physics.

  14. NETL-RUA Engineer Earns Presidential Award for R&D That Could Help Meet DOE Carbon Capture Goals

    Energy.gov [DOE]

    A Carnegie Mellon University professor who worked with the National Energy Technology Laboratory on research that could help meet carbon capture goals has earned a Presidential Early Career Award for Scientists and Engineers.

  15. CBERD Cross-Cutting Task: Cost Optimization of Energy Efficiency

    Energy.gov [DOE]

    Lead performer: Carnegie Mellon University – Pittsburgh PAPartner:--Centre for Environmental Planning and Technology - Ahmedabad, IndiaFY16 DOE Funding: $50,000 per yearCost share: N/AProject Term:...

  16. Browse by Discipline -- E-print Network Subject Pathways: Biology...

    Office of Scientific and Technical Information (OSTI)

    I J K L M N O P Q R S T U V W X Y Z Ilic, Marija D. (Marija D. Ilic) - Department of Electrical and Computer Engineering, Carnegie Mellon University Go back to Individual ...

  17. Mortar.io - Open BAS Platform Electrical and Computer Engineering Department

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Mortar.io - Open BAS Platform Electrical and Computer Engineering Department 1 Carnegie Mellon University Civil and Environmental Engineering Department 2 Carnegie Mellon University Anthony Rowe 1 , Mario Bérges 2 , Christopher Martin 3 Max Buevich 1 , Jingkun Gao 2 , Suman Giri 2 , Emre Kara 2 , Patrick Lazik 1 , Chris Palmer 1 , Niranjini Rajagopal 1 , Oliver Shih 1 Bosch Research and Technology Center 3 Sensor Andrew What's in a name? 3 Andrew Carnegie Andrew Mellon + Andrew File System

  18. Center for Materials at Irradiation and Mechanical Extremes: Los National

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Alamos Laboratory - Ellen Cerreta Image of Ellen Contact Information Los Alamos National Laboratory Materials Science and Technology Division MST-8, Structure/Property Relations Group Phone: (505) 665-2576 ecerreta@lanl.gov Bio Education Ph.D. (2001), Materials Science and Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania M.S. (1997), Materials Science and Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania B.S. (1996), Aerospace Engineering, University of

  19. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    5 SECTION A. Project Title: DOE-EM Traineeship in Robotics - Carnegie Mellon University SECTION B. Project Description Carnegie Mellon University (CMU) proposes to develop an Environmental Management (EM) Traineeship in robotics. The traineeship will build on the existing core robotics curricula while introducing specialized topics that ensure a thorough understanding of EM-relevant concerns. The proposed program will also incorporate supervised research opportunities with CMU faculty advisors

  20. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    28 SECTION A. Project Title: Localized Imaging, Surveying and Mapping for Nuclearized Underwater Robots - Carnegie Mellon University SECTION B. Project Description Carnegie Mellon University proposes to develop, demonstrate, and infuse a leap of sensing, robotics, spatial positioning and visualization capability into underwater nuclear operations relevant to DOE environmental management. The program will develop and demonstrate a prototype robotic system to maneuver in a water-filled basin,

  1. Kondo Screening and Magnetic Ordering in Frustrated UNi{sub {bold 4}} B

    SciTech Connect

    Lacroix, C.; Canals, B.; Nunez-Regueiro, M.D.

    1996-12-01

    UNi{sub 4}B exhibits unusual properties and, in particular, a unique antiferromagnetic arrangement involving only 2/3 of the U sites. Based on the low temperature behavior of this compound, we propose that the remaining 1/3 U sites are nonmagnetic due to the Kondo effect. We derive amodel in which the coexistence of magnetic and nonmagnetic U sites is the consequence of the competition between frustration of the crystallographic structure and instability of the 5{ital f} moments. {copyright} {ital 1996 The American Physical Society.}

  2. Radio-frequency measurements of UNiX compounds (X= Al, Ga, Ge) in high magnetic fields

    SciTech Connect

    Mielke, Charles H; Mcdonald, David R; Zapf, Vivien; Altarawneh, Moaz M; Lacerda, Alex H; Adak, Sourav; Karunakar, Kothapalli; Nakotte, Heinrich; Chang, S; Alsmadi, A M; Alyones, S

    2009-01-01

    We performed radio-frequency (RF) skin-depth measurements of antiferromagnetic UNiX compounds (X=Al, Ga, Ge) in magnetic fields up to 60 T and at temperatures between 1.4 to {approx}60 K. Magnetic fields are applied along different crystallographic directions and RF penetration-depth was measured using a tunnel-diode oscillator (TDO) circuit. The sample is coupled to the inductive element of a TDO resonant tank circuit, and the shift in the resonant frequency {Delta}f of the circuit is measured. The UNiX compounds exhibit field-induced magnetic transitions at low temperatures, and those transitions are accompanied by a drastic change in {Delta}f. The results of our skin-depth measurements were compared with previously published B-T phase diagrams for these three compounds.

  3. CBEI: Using DOE Tools - 2015 Peer Review | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Using DOE Tools - 2015 Peer Review CBEI: Using DOE Tools - 2015 Peer Review Presenter: Erica Cochran, Carnegie-Mellon University View the Presentation CBEI: Using DOE Tools - 2015 Peer Review (1.73 MB) More Documents & Publications BuildingSync and SEED Development and Deployment CBEI: Aligning Owners and Service Providers - 2015 Peer Review CBEI: Building Retuning Training

  4. NETL Technology for Safer, Cleaner Corrosion-Protecting Metal Coatings Licensed by Pittsburgh Start-Up

    Energy.gov [DOE]

    The Energy Department’s National Energy Technology Laboratory (NETL) teamed up with Carnegie Mellon University to create a revolutionary, cost-effective technology to reduce the impact of corrosion, which costs the US economy an estimated $276 billion per year. This partnership resulted in the creation of a new spin-off company that signed a licensing agreement with NETL this past June.

  5. Unied States Government

    Office of Legacy Management (LM)

    123 Avenue F and are now authorizing remedial work on that property. The I additional cost for cleaning up this property should be small when the contractor is cleaning up the...

  6. 29Si-NMR study of magnetic anisotropy and hyperfine interactions in the uranium-bsed ferromagnet UNiSi2

    SciTech Connect

    Sakai, Hironori; Baek, Seung H; Bauer, Eric D; Ronning, Filip; Thompson, J D

    2009-01-01

    UNiSi{sub 2} orders ferromagnetically below T{sub Curie} = 95 K. This material crystallizes in the orthorhombic CeNiSi{sub 2}-type structure. The uranium atoms form double-layers, which are stacked along the crystallographic b axis (the longest axis). From magnetization measurement the easy (hard) magnetization axis is found to be the c axis (b axis). {sup 29}Si-NMR measurements have been performed in the paramagnetic state. In UNiSi{sub 2}, two crystallographic Si sites exist with orthorhombic local symmetry. The Knight shifts on each Si site have been estimated from the spectra of random and oriented powders. The transferred hyperfine couplings have been also derived. It is found that the transferred hyperfine coupling constants on each Si site are nearly isotropic, and that their Knight shift anisotropy comes from that of the bulk susceptibility. The nuclear-spin lattice relaxation rate 1/T{sub 1} shows temperature-independent behavior, which indicates the existence of localized 5f electron.

  7. NREL: News - Solar Decathlon Design Presentation and Simulation Results

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Announced Design Presentation and Simulation Results Announced Monday, September 30, 2002 Second Round Goes to Virginia Tech Washington, D.C.-Virginia Polytechnic Institute and State University took first place in the Design Presentation and Simulation Contest at the Solar Village on the National Mall in Washington, D.C. today. Carnegie Mellon University placed second and the University of Maryland placed third. With today's contest results, and results from ongoing contests, the overall

  8. CBEI: Stakeholder Engagement Support for the Better Buildings Energy Data

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Accelerator - 2015 Peer Review | Department of Energy Stakeholder Engagement Support for the Better Buildings Energy Data Accelerator - 2015 Peer Review CBEI: Stakeholder Engagement Support for the Better Buildings Energy Data Accelerator - 2015 Peer Review Presenter: Erica Cochran, Carnegie-Mellon University View the Presentation CBEI: Stakeholder Engagement Support for the Better Buildings Energy Data Accelerator - 2015 Peer Review (3.16 MB) More Documents & Publications CBEI: Using

  9. OpenMortar.io: An Extensible Sensing and Control Platform for Building Energy Management

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    OpenMortar.io: An Extensible Sensing and Control Platform for Building Energy Management 2014 Building Technologies Office Peer Review Anthony Rowe, agr@ece.cmu.edu Carnegie Mellon University Project Summary Timeline: Start date: November 2013 (New Project) Planned end date: November 2016 Key Milestones 1. Functional Requirement Analysis; 03/14 2. First Version of Mortar.io; 04/14 Key Partners: Bosch RTC Lutron Electronics 3. Benchtop HVAC, Lighting, CMEL Integration; 10/14 4. Deploy in Scaife

  10. 2015 SSAA Awards | National Nuclear Security Administration | (NNSA)

    National Nuclear Security Administration (NNSA)

    5 SSAA Awards Institution PI Title Research area Arizona State University Peralta, Pedro Formulation and Validation of Anisotropic Models for Growth and Coalescence of Spall Damage in Crystalline Materials Materials Carnegie Mellon University Suter, Robert Towards Optimal Processing of Additive Manufactured Metals for High Strain Rate Properties Case Western Reserve University Prakash, Vikas Dynamic Strength of Metals Under Extreme Conditions Materials Clemson University DeVol, Timothy Robust

  11. Larry Curtiss | Argonne National Laboratory

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Larry Curtiss Argonne Distinguished Fellow Ph.D., Carnegie-Mellon University Research in the area of computational chemistry including development of new quantum chemical methods and applications to problems in materials science and chemistry Specific research areas include nanocatalysis, nanocrystalline materials, computational thermochemistry, electron transfer processes; and nanoporous materials News A new leaf: Scientists turn carbon dioxide back into fuel Stable "superoxide" opens

  12. Sandia National Laboratories: Careers: Students & Postdocs: Campus

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Recruiting: Universities Universities A partial list of universities hosting Sandia recruiting events: California Institute of Technology Carnegie Mellon University Cornell University DeVry University - Phoenix Georgia Institute of Technology Massachusetts Institute of Technology New Mexico Institute of Mining and Technology New Mexico State University Oklahoma State University Prairie View A&M University Purdue University Stanford University Texas A&M University University of

  13. Scientists uncover combustion mechanism to better predict warming by

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    wildfires Combustion mechanism to better predict warming by wildfires Scientists uncover combustion mechanism to better predict warming by wildfires Scientists have uncovered key attributes of so-called "brown carbon" from wildfires. August 4, 2014 Wildfire fuel being burned in the fire laboratory as the aerosols from the top are being sucked into inlets and sampled at the Missoula Fire Sciences Laboratory in Missoula, Montana by Los Alamos and Carnegie Mellon University

  14. 2015 Race to Zero Competition Teams | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Residential Buildings » Zero Energy Ready Home » 2015 Race to Zero Competition Teams 2015 Race to Zero Competition Teams In the 2015 Race to Zero Student Design Competition, 33 teams from 27 schools across the United States and Canada competed. Below are the list of teams. View the sponsorship page to see a list of 2015 sponsors. Algonquin College Appalachian State University Auburn University (2) California State University, Fresno Carnegie Mellon University Georgia Institute of Technology

  15. Research Highlight

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Scientists Uncover Combustion Mechanism to Better Predict Warming by Wildfires Download a printable PDF Submitter: Dubey, M. K., Los Alamos National Laboratory Donahue, N., Carnegie Mellon University Area of Research: Radiation Processes Working Group(s): Aerosol Life Cycle Journal Reference: Saleh R, E Robinson, D Tkacik, A Ahern, S Liu, A Aiken, R Sullivan, A Presto, M Dubey, R Yokelson, N Donahue, and A Robinson. 2014. "Brownness of organics in aerosols from biomass burning linked to

  16. John Sheldon 2012 poster

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    proposal is supported by the Geothermal Technologies Program of the DOE/Energy Efficiency & Renewable Energy Office, DOE/National Energy Technology Laboratory - Pittsburgh, Department of Mechanical Engineering at Carnegie Mellon University. An experimentally-validated computational framework to enable nanofluid drilling technology Background and Introduction * Compared to the fixed costs of oil and gas drilling ($15.61/MWh), the exploration and drilling for geothermal resources is a

  17. Dephosphorization when using DRI

    SciTech Connect

    2005-09-21

    The increase in high quality steel production in electric arc furnaces (EAFs) requires the use of scrap substitute materials, such as Direct Reduced Iron (DRI) and Hot Briquetted Iron (HBI). Although DRI and HBI products have lower copper and nickel contents than most scrap materials, they can contain up to ten times more phosphorus. This project, led by Carnegie Mellon University’s Center for Iron and Steelmaking Research, improves the understanding of how phosphorus behaves when DRI and HBI melt.

  18. An Extensible Sensing and Control Platform for Building Energy Management |

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Department of Energy An Extensible Sensing and Control Platform for Building Energy Management An Extensible Sensing and Control Platform for Building Energy Management Lead Performer: Carnegie Mellon University - Pittsburgh, PA Project Partners: -- Bosch RTC - Palo Alto, CA -- Lutron Electronics - Washington, DC DOE Funding: $507,402 Cost Share: $74,274 Project Term: 11/1/2013 - 10/31/2014 Funding Opportunity Announcement: "Turn-Key" Open Source Software Solutions for Energy

  19. NATIONAL ENERGY TECHNOLOGY LABORATORY Technology Transfer NETL Licenses Transformational

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Licenses Transformational Technology for Carbon Dioxide Capture Success Story Carbon capture and storage from fossil fuel-based power generation systems are critical strategic components to curb emissions of atmospheric carbon dioxide (CO 2 ). Currently available carbon capture processes are limited-significantly reducing the efficiency of power generation and increasing electricity cost. Working in collaboration with partners at Carnegie Mellon University, NETL researchers have developed a

  20. Identifying Barriers and Predictors for Success for Renewable Energy Development on Tribal Lands

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Identifying Barriers and Predictors for Success for Renewable Energy Development on Tribal Lands Tommy Jones, PhD Student, University of Arizona Len Necefer, PhD Candidate, Carnegie Mellon University SAND Number: SAND2014-17558 PE Financing and Funding Remains a Challenge ▪ Small scale projects > Large scale projects - Challenges securing financing, outside capital, infrastructure, risk, RECs ▪ Lack tribal equity to dedicate to RE - competing interests ▪ Debt - Risk adverse, not

  1. A I K E N

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    to Help Train the Next Generation of Robotics Engineers AIKEN, S.C. (March 22, 2016) - The U.S. Department of Energy's Savannah River National Laboratory (SRNL) has been selected to help lead a team to provide specialized training for graduate students in robotics to help support environmental remediation. The Robotics Traineeship Program will be based at Carnegie Mellon University and will also partner with Pacific Northwest National Laboratory in Washington. The five-year cooperative agreement

  2. Development of a Foam OTEC System. Final technical report for Fiscal Year 1979

    SciTech Connect

    Not Available

    1980-01-01

    Research on Development of a Foam OTEC System, as carried out at Carnegie-Mellon University from October 1, 1978 through September 30, 1979, is described. To a brief section summarizing highlights of research results are appended 12 technical reports which detail specific sections of the program. The work described is continuing and a proposal is currently being submitted to provide support in fiscal 1980.

  3. Novel Transparent Phosphor Conversion Matrix with High Thermal Conductivity

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    for Next-Generation Phosphor-Converted LED-based Solid State Lighting | Department of Energy Transparent Phosphor Conversion Matrix with High Thermal Conductivity for Next-Generation Phosphor-Converted LED-based Solid State Lighting Novel Transparent Phosphor Conversion Matrix with High Thermal Conductivity for Next-Generation Phosphor-Converted LED-based Solid State Lighting Lead Performer: Carnegie Mellon University - Pittsburgh, PA Partner: Osram Sylvania - Danvers, MA DOE Total Funding:

  4. Hyliion Wins 2015 National Clean Energy Business Plan Competition,

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Cleantech University Prize Awardees Announced | Department of Energy Hyliion Wins 2015 National Clean Energy Business Plan Competition, Cleantech University Prize Awardees Announced Hyliion Wins 2015 National Clean Energy Business Plan Competition, Cleantech University Prize Awardees Announced June 25, 2015 - 11:03am Addthis Hyliion from Carnegie Mellon University in front of their SMART Suspension System add-on hybrid module that reduces fuel consumption for heavy duty trucks. Hyliion won

  5. DOE Awards Workforce Opportunities in Regional Careers Grant | Department

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    of Energy the Carnegie-Mellon University (CMU) for "National Research Institute: Collaborative Research: Multi-Modal Characterization of Department of Energy-Environmental Management Facilities." The cooperative agreement will focus on addressing the problem of exploring post-disaster nuclear sites by deploying small flying and roving robots. The research will focus on integrated sensing, modeling, and planning. The proposed research responds to the need for the robotic autonomous

  6. CBERD: Cost Optimization of Energy Efficiency | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Cost Optimization of Energy Efficiency CBERD: Cost Optimization of Energy Efficiency Triple bottomline framework being utilized for the CBERD Cost Optimization of Energy Efficiency cross-cutting activity. Triple bottomline framework being utilized for the CBERD Cost Optimization of Energy Efficiency cross-cutting activity. Lead performer: Carnegie Mellon University - Pittsburgh PA Partner: --Centre for Environmental Planning and Technology - Ahmedabad, India FY16 DOE Funding: $50,000 per year

  7. NETL Technology Transfer Case Studies and Awards

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Success Stories LiquidIonSolutionImage TRANSFORMATIONAL TECHNOLOGY FOR CARBON DIOXIDE CAPTURE Working in collaboration with partners at Carnegie Mellon University, NETL researchers have developed a number of novel ionic liquids and polymers that provide a more efficient and economical process for carbon dioxide capture. The suite of technologies, covering the syntheses and use of ionic liquids, has been elusively licensed to Liquid Ion Solutions, a Pittsburgh-based chemicals manufacturing

  8. Center for Materials at Irradiation and Mechanical Extremes: Los National

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Alamos Laboratory Anthony David Rollett image of anthony rollet Contact Information Carnegie Mellon University Department of Materials Sci.& Eng. Wean Hall 3313, 5000 Forbes Ave. Pittsburgh, PA 15213-3890 Phone: (412) 268-3177 Email: rollett@andrew.cmu.edu Bio Education M.A. (1976), Metallurgy and Materials Science, Cambridge University, United Kingdom Ph.D. (1987) Materials Engineering, Drexel University Research and Professional Experience Professor of Materials Science &

  9. Center for Materials at Irradiation and Mechanical Extremes: Los National

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Alamos Laboratory George T. (Rusty) Gray III image of George Gray Contact Information Laboratory Fellow Los Alamos National Laboratory Dynamic Materials Properties, Testing, and Modeling Los Alamos, NM 87545 Phone: (505) 667-5452 rusty@lanl.gov Bio Education Ph.D. in Metallurgical Engineering, Carnegie-Mellon University, 1981 M.S. in Metallurgical Engineering, South Dakota School of Mines and Technology, 1977 B.S. in Metallurgical Engineering, South Dakota School of Mines and Technology,

  10. Software developed at Los Alamos National Lab touted by President Obama,

    Office of Scientific and Technical Information (OSTI)

    available via OSTI | OSTI, US Dept of Energy Office of Scientific and Technical Information Software developed at Los Alamos National Lab touted by President Obama, available via OSTI Back to the OSTI News Listing for 2011 A software package developed at Los Alamos National Lab was recently touted by President Obama in his remarks at Carnegie Mellon University's National Robotics Engineering Center. President Obama said that a team of researchers at LANL teamed with Procter and Gamble

  11. 2007 Long Range Plan Working Group Members | U.S. DOE Office of Science

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    (SC) 7 Long Range Plan Working Group Members Nuclear Science Advisory Committee (NSAC) NSAC Home Meetings NSAC Members Charges/Reports Charter .pdf file (78KB) NP Committees of Visitors Federal Advisory Committees NP Home NSAC Members 2007 Long Range Plan Working Group Members Print Text Size: A A A FeedbackShare Page Beise, Elizabeth University of Maryland Merninga, Lia TJNAF Bryman, Douglas TRIUMF Meyer, Curtis Carnegie Mellon University Burrows, Adam University of Arizona Meziani,

  12. ARM - Publications: Science Team Meeting Documents

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    The ARM Blue/Green Period: 3-Channel Color Composites of GOES-8 Data Wagener, R., and Gregory, L., Brookhaven National Laboratory, ARM External Data Center Konidaris, N., Carnegie Mellon University; Minnett, P.J., University of Miami, Rosenstiel School of Marine and Atmospheric Sciences Ninth Atmospheric Radiation Measurement (ARM) Science Team Meeting Despite the title and the general appearance of the resulting images, this is not an attempt to emulate art nor an expression of anybody's mood.

  13. A Systematic Comprehensive Computational Model for Stake Estimation in Mission Assurance: Applying Cyber Security Econometrics System (CSES) to Mission Assurance Analysis Protocol (MAAP)

    SciTech Connect

    Abercrombie, Robert K; Sheldon, Frederick T; Grimaila, Michael R

    2010-01-01

    In earlier works, we presented a computational infrastructure that allows an analyst to estimate the security of a system in terms of the loss that each stakeholder stands to sustain as a result of security breakdowns. In this paper, we discuss how this infrastructure can be used in the subject domain of mission assurance as defined as the full life-cycle engineering process to identify and mitigate design, production, test, and field support deficiencies of mission success. We address the opportunity to apply the Cyberspace Security Econometrics System (CSES) to Carnegie Mellon University and Software Engineering Institute s Mission Assurance Analysis Protocol (MAAP) in this context.

  14. Solar Agile Delivery of Electrical Power Technology (Solar ADEPT) (2nd Quarterly)

    SciTech Connect

    Reass, William A.; Audia, Jeffrey M.; Baca, David M.; Kwon, Sung I.; Scheinker, Alexander

    2012-08-13

    This talk is for the ARPA-E funded program that Los Alamos is part of a team with Carnegie Mellon University, Magnetics div. of Spang, and the University of Pittsburgh. Most of the material presented in this talk has been presented before and is associated with accelerators and has a 'DUSA' 'ATDO' designator. Slight variations in circuit topology as presented here are somewhat novel and although not classified should be considered Los Alamos proprietary. The viewgraphs from 'both' talks will be presented to team members and the ARPA-E sponsor.

  15. Gibson-Salishan06.ppt

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    7, 2006 G. Gibson, Panasas Coping with Petabyte Files at Petascale Performance The Salishan Conference on High-Speed Computing Garth Gibson Founder & CTO, Panasas, and Assoc Prof., Carnegie Mellon University garth@panasas.com and garth@cs.cmu.edu Slide 2 April 27, 2006 G. Gibson, Panasas Slide 3 April 27, 2006 G. Gibson, Panasas Slide 4 April 27, 2006 G. Gibson, Panasas Slide 5 April 27, 2006 G. Gibson, Panasas Slide 6 April 27, 2006 G. Gibson, Panasas Slide 7 April 27, 2006 G. Gibson,

  16. CX-100676 Categorical Exclusion Determination | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    6 Categorical Exclusion Determination CX-100676 Categorical Exclusion Determination Human-in-the-loop Sensing and Control for Commercial Building Energy Efficiency and Occupant Comfort Award Number: DE-EE0007682 CX(s) Applied: A9, B5.1 Building Technologies Office Date: 8/9/2016 Location(s): PA Office(s): Golden Field Office The U.S. Department of Energy (DOE) is proposing to provide federal funding to Carnegie Mellon University to design, develop, implement, and field test an occupancy

  17. AISI (American Iron and Steel Institute) direct steelmaking program annual technical report for year ending November 29, 1989

    SciTech Connect

    Aukrust, E.

    1989-12-20

    The direct steelmaking program is proceeding essentially on schedule. The physical chemistry research programs at Carnegie Mellon University and the Massachusetts Institute of Technology, concerned with ore-slag, ore-melt, and melt-slag reactions, are proceeding on schedule and are generating information on reaction rates, gas evolution rates, and mass-transfer and heat-transfer rates that will help in understanding and modeling the smelting process. Laboratory modeling of the refining process assisted in the design of a pilot-scale continuous refiner. Several runs of the continuous refiner from late October to early December yielded data that are currently being analyzed. 19 figs.

  18. The Petascale Data Storage Institute

    SciTech Connect

    Gibson, Garth; Long, Darrell; Honeyman, Peter; Grider, Gary; Kramer, William; Shalf, John; Roth, Philip; Felix, Evan; Ward, Lee

    2013-07-01

    Petascale computing infrastructures for scientific discovery make petascale demands on information storage capacity, performance, concurrency, reliability, availability, and manageability.The Petascale Data Storage Institute focuses on the data storage problems found in petascale scientific computing environments, with special attention to community issues such as interoperability, community buy-in, and shared tools.The Petascale Data Storage Institute is a collaboration between researchers at Carnegie Mellon University, National Energy Research Scientific Computing Center, Pacific Northwest National Laboratory, Oak Ridge National Laboratory, Sandia National Laboratory, Los Alamos National Laboratory, University of Michigan, and the University of California at Santa Cruz.

  19. Untitled

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Dis(nguished Lecture Series Professor Tony Rolle: Department of Materials Science & Engineering Carnegie Mellon University Advanced Characteriza(on of Addi(vely Manufactured Materials, including Synchrotron-based 3D X-rays Wednesday, August 3, 2016 2:00 - 3:00pm MSL Auditorium (TA-03 - Bldg 1698 - Room A103) ABSTRACT: A brief review is given of metals addi2ve manufacturing, emphasizing the most common technology, viz. powder bed. The most cri2cal feature is the melt pool size, which is, to

  20. NATIONAL ENERGY TECHNOLOGY LABORATORY Technology Transfer NETL Technology for Safer,

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Technology for Safer, Cleaner Corrosion-Protecting Metal Coatings Licensed by Pittsburgh Start-Up Success Story Corrosion-related issues cost the U.S. economy $276 billion a year. The Energy Department's National Energy Technology Laboratory (NETL) teamed up with Carnegie Mellon University (CMU) to create a revolutionary, cost-effective technology to reduce that impact-work that resulted in the creation of a new CMU/NETL spin-off that signed a licensing agreement with the laboratory in June. The

  1. NERSCtalk-gluex-5-2011.ppt

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    J lab@12GeV P hysics E xperiments ] Richard J ones GlueX 1. JLab@12GeV E xperiments C ase S tudy: O verview H alls A , B ( CLAS12), C , D ( GlueX) NERSC---NP W orkshop, Bethesda, M ay 2 6---27, 2 011 3 1. GlueX - t he s cience NERSC---NP W orkshop, Bethesda, M ay 2 6---27, 2 011 4 1. GlueX - t he c ollabora0on  University of Athens  Carnegie Mellon University  Catholic University  Christopher Newport University  University of Connecticut  Florida International University 

  2. Center for Materials at Irradiation and Mechanical Extremes: Los Alamos Lab

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    John Price Hirth Hirth received his B. S. and M. S. degrees in Metallurgical Engineering from Ohio State University in 1953. He obtained his Ph. D. from the Carnegie Institute of Technology (now Carnegie Mellon University) in 1958. He was in the U. S. Air Force in 1953-57; a Fulbright Fellow at Bristol University, 1957-58; an Assistant Professor at Carnegie 1958-61; and was at Ohio State University in 1961-1988, being named a Professor in 1964. He was Professor at Washington State University in

  3. Barriers to Renewable Energy Development on Tribal Lands

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    for the U.S. Department of Energy's National Nuclear Security Administration under contract DE-AC04-94AL85000. SAND NO. 2011-XXXXP Barriers to Renewable Energy Development on Tribal Lands Tommy Jones, Ph.D Student, University of Arizona Len Necefer, PhD Candidate, Carnegie Mellon University Resources on Tribal lands  Native American lands comprise 5% of land  10% of all energy resources in the US  40% of uranium  30% low sulfur coal  4% oil and gas  44 million acres of

  4. Spin rotation parameters A and R for. pi. /sup +- /p elastic scattering at the onset of the Roper resonance

    SciTech Connect

    Nefkens, B.M.K.; Barlow, D.B.; Kessler, R.S.; Kim, G.J.; Pillai, C.; Price, J.W.; Wightman, J.A.; Hall, S.; Lane, D.W.; Loe, S.R.; and others

    1988-11-20

    The verification of the existing sets of ..pi..N scattering phases is sought via the determination of the A and R spin rotation parameters in ..pi../sup +/p and ..pi../sup -/p elastic scattering. The preliminary results of this first measurement of these parameters for incident pion momenta from 427 to 657 MeV/c, show agreement with the gross features of the partial-wave analyses by the groups from VPI, Karlsruhe-Helsinki, and Carnegie-Mellon-LBL. There is room for improvement.

  5. CCEI WEBINAR

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Wednesday, October 13, 2015 11:30 a.m. (EDT) - 322 ISE Lab www.efrc.udel.edu The Catalysis Center for Energy Innovation is an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science. Professor John Kitchin Department of Chemical Engineering Carnegie Mellon University http://kitchingroup.cheme.cmu.edu John Kitchin completed his B.S. in Chemistry at North Carolina State University. He completed a M.S. in Materials Science and a Ph.D. in Chemical Engineering at

  6. UniBatt Ltd | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Zip: 29500 Product: Start-up company specializing in the development of innovative batteries for mobile electronic devices such as: laptops, cellular phones, PDAs, etc....

  7. Robotic Surveying

    SciTech Connect

    Suzy Cantor-McKinney; Michael Kruzic

    2007-03-01

    ZAPATA ENGINEERING challenged our engineers and scientists, which included robotics expertise from Carnegie Mellon University, to design a solution to meet our client's requirements for rapid digital geophysical and radiological data collection of a munitions test range with no down-range personnel. A prime concern of the project was to minimize exposure of personnel to unexploded ordnance and radiation. The field season was limited by extreme heat, cold and snow. Geographical Information System (GIS) tools were used throughout this project to accurately define the limits of mapped areas, build a common mapping platform from various client products, track production progress, allocate resources and relate subsurface geophysical information to geographical features for use in rapidly reacquiring targets for investigation. We were hopeful that our platform could meet the proposed 35 acres per day, towing both a geophysical package and a radiological monitoring trailer. We held our breath and crossed our fingers as the autonomous Speedrower began to crawl across the playa lakebed. We met our proposed production rate, and we averaged just less than 50 acres per 12-hour day using the autonomous platform with a path tracking error of less than +/- 4 inches. Our project team mapped over 1,800 acres in an 8-week (4 days per week) timeframe. The expertise of our partner, Carnegie Mellon University, was recently demonstrated when their two autonomous vehicle entries finished second and third at the 2005 Defense Advanced Research Projects Agency (DARPA) Grand Challenge. 'The Grand Challenge program was established to help foster the development of autonomous vehicle technology that will some day help save the lives of Americans who are protecting our country on the battlefield', said DARPA Grand Challenge Program Manager, Ron Kurjanowicz. Our autonomous remote-controlled vehicle (ARCV) was a modified New Holland 2550 Speedrower retrofitted to allow the machine

  8. The state of the Java universe

    ScienceCinema

    None

    2016-07-12

    Speaker Bio: James Gosling received a B.Sc. in computer science from the University of Calgary, Canada in 1977. He received a Ph.D. in computer science from Carnegie-Mellon University in 1983. The title of his thesis was The Algebraic Manipulation of Constraints. He has built satellite data acquisition systems, a multiprocessor version of UNIX®, several compilers, mail systems, and window managers. He has also built a WYSIWYG text editor, a constraint-based drawing editor, and a text editor called Emacs, for UNIX systems. At Sun his early activity was as lead engineer of the NeWS window system. He did the original design of the Java programming language and implemented its original compiler and virtual machine. He has recently been a contributor to the Real-Time Specification for Java.

  9. The state of the Java universe

    SciTech Connect

    2011-02-08

    Speaker Bio: James Gosling received a B.Sc. in computer science from the University of Calgary, Canada in 1977. He received a Ph.D. in computer science from Carnegie-Mellon University in 1983. The title of his thesis was The Algebraic Manipulation of Constraints. He has built satellite data acquisition systems, a multiprocessor version of UNIX®, several compilers, mail systems, and window managers. He has also built a WYSIWYG text editor, a constraint-based drawing editor, and a text editor called Emacs, for UNIX systems. At Sun his early activity was as lead engineer of the NeWS window system. He did the original design of the Java programming language and implemented its original compiler and virtual machine. He has recently been a contributor to the Real-Time Specification for Java.

  10. Special heat transfer monitor (HTM) for the Trane Company OTEC heat exchanger

    SciTech Connect

    Kuzay, T.M.; Panchal, C.B.; Gavin, A.P.

    1981-02-01

    A Heat Transfer Monitor (HTM) is a sensitive device which quantifies development of biofouling in the OTEC heat exchanger surfaces in terms of degrading heat transfer coefficient as biofouling progresses. The Carnegie-Mellon University (CMU) type HTM has been successfully utilized to date for plain circular OTEC heat exchanger tubes. With the development of compact heat exchangers for OTEC with non-circular and/or complex tube geometries, a device independent HTM (Universal Monitor) concept is being sought. For the meantime, however, novel methods have been developed to extend the principles of the CMU type HTM to noncircular tube geometries. The theory, formulation, analytical solutions and laboratory test results are presented for the novel use of the CMU HTM concept with such a special tube for the Trane Company heat exchanger for OTEC.

  11. Reduction of Annealing Times for Energy Conservation in Aluminum

    SciTech Connect

    Anthony D. Rollett; Hasso Weiland; Mohammed Alvi; Abhijit Brahme

    2005-08-31

    Carnegie Mellon University was teamed with the Alcoa Technical Center with support from the US Dept. of Energy (Office of Industrial Technology) and the Pennsylvania Technology Investment Authority (PTIA) to make processing of aluminum less costly and more energy efficient. Researchers in the Department of Materials Science and Engineering have investigated how annealing processes in the early stages of aluminum processing affect the structure and properties of the material. Annealing at high temperatures consumes significant amounts of time and energy. By making detailed measurements of the crystallography and morphology of internal structural changes they have generated new information that will provide a scientific basis for shortening processing times and consuming less energy during annealing.

  12. A COMPUTATIONAL WORKBENCH ENVIRONMENT FOR VIRTUAL POWER PLANT SIMULATION

    SciTech Connect

    Mike Bockelie; Dave Swensen; Martin Denison; Zumao Chen; Mike Maguire; Adel Sarofim; Changguan Yang; Hong-Shig Shim

    2004-01-28

    This is the thirteenth Quarterly Technical Report for DOE Cooperative Agreement No: DE-FC26-00NT41047. The goal of the project is to develop and demonstrate a Virtual Engineering-based framework for simulating the performance of Advanced Power Systems. Within the last quarter, good progress has been made on all aspects of the project. Software development efforts have focused on a preliminary detailed software design for the enhanced framework. Given the complexity of the individual software tools from each team (i.e., Reaction Engineering International, Carnegie Mellon University, Iowa State University), a robust, extensible design is required for the success of the project. In addition to achieving a preliminary software design, significant progress has been made on several development tasks for the program. These include: (1) the enhancement of the controller user interface to support detachment from the Computational Engine and support for multiple computer platforms, (2) modification of the Iowa State University interface-to-kernel communication mechanisms to meet the requirements of the new software design, (3) decoupling of the Carnegie Mellon University computational models from their parent IECM (Integrated Environmental Control Model) user interface for integration with the new framework and (4) development of a new CORBA-based model interfacing specification. A benchmarking exercise to compare process and CFD based models for entrained flow gasifiers was completed. A summary of our work on intrinsic kinetics for modeling coal gasification has been completed. Plans for implementing soot and tar models into our entrained flow gasifier models are outlined. Plans for implementing a model for mercury capture based on conventional capture technology, but applied to an IGCC system, are outlined.

  13. Development and testing of an air quality model for Mexico City

    SciTech Connect

    Williams, M.D.; Streit, G. ); Cruz, X.; Ruiz, M.; Sosa, G. ); Russell, A.G.; McNair, L.A. . Dept. of Mechanical Engineering)

    1992-03-02

    Los Alamos National Laboratory and Instituto Mexicano del Petroleo have embarked on a joint study of options for improving air quality in Mexico City. The intent is to develop a modeling system which can address the behavior of pollutants in the region so that option for improving Mexico City air quality can be properly evaluated. In February of 1991, the project conducted a field program which yielded a variety of data which is being used to evaluate and improve the models. Normally the worst air quality for both primary and photochemical pollutants occurs in the winter Mexico City. During the field program, measurements included: (1) lidar measurements of aerosol transport and dispersion, (2) aircraft measurements of winds, turbulence, and chemical species aloft, (3) aircraft measurements of earth surface skin temperatures, and (4) tethersonde measurements of wind, temperature and ozone vertical profiles. A three-dimensional, prognostic, higher order turbulence meteorological model (HOTMAC) was modified to include an urban canopy and urban heat sources. HOTMAC is used to drive an Monte-Carlo kernel dispersion code (RAPTAD). HOTMAC also provides winds and mixing heights for the CIT photochemical model which was developed by investigators at the California Institute of Technology and Carnegie Mellon University.

  14. Fluidized-bed copper oxide process. Phase IV. Conceptual design and economic evaluation, Volume I. Final report

    SciTech Connect

    1994-11-30

    Universal Oil Products, Inc. (UOP) of Des Plaines, Illinois has contracted A.E. Roberts & Associates, Inc. (AERA) of Atlanta, Georgia to prepare a sensitivity analysis for the development of the Fluidized-bed Copper Oxide (FBCO) process. As proposed by AERA in September 1991, development of the FBCO process design for a 500 mega-watt (MW) unit was divided into three tasks: (1) Establishment of a Conceptual Design, (2) Conceptual Design, (3) Cost Analysis Task 1 determined the basis for a conceptual design for the 500 megawatt (MW) FBCO process. It was completed by AERA in September of 1992, and a report was submitted at that time {open_quotes}Establishment of the Design Basis for Application to a 500 MW Coal-fired Facility.{close_quotes} Task 2 gathered all pertinent data available to date and reviewed its applicability to the 500 MW FBCO process. Work on this task was carried out on a joint basis by the AERA team members: Roberts & Schaefers worked on the dense phase transport aspect of the design; Cornell and Carnegie Mellon Universities worked on the design kinetics and modeling; and AERA contributed commercial power and combustion experience. Task 3 provides budgetary cost estimates for the FBCO process and competing alternative technologies for sulfur dioxide and nitrogen oxide removal.

  15. Formation and aging of secondary organic aerosol from toluene: changes in chemical composition, volatility, and hygroscopicity

    DOE PAGES [OSTI]

    Hildebrandt Ruiz, L.; Paciga, A. L.; Cerully, K. M.; Nenes, A.; Donahue, N. M.; Pandis, S. N.

    2015-07-24

    Secondary organic aerosol (SOA) is transformed after its initial formation, but this chemical aging of SOA is poorly understood. Experiments were conducted in the Carnegie Mellon environmental chamber to form secondary organic aerosol (SOA) from the photo-oxidation of toluene and other small aromatic volatile organic compounds (VOCs) in the presence of NOx under different oxidizing conditions. The effects of the oxidizing condition on organic aerosol (OA) composition, mass yield, volatility, and hygroscopicity were explored. Higher exposure to the hydroxyl radical resulted in different OA composition, average carbon oxidation state (OSc), and mass yield. The OA oxidation state generally increased duringmore » photo-oxidation, and the final OA OSc ranged from -0.29 to 0.16 in the performed experiments. The volatility of OA formed in these different experiments varied by as much as a factor of 30, demonstrating that the OA formed under different oxidizing conditions can have a significantly different saturation concentration. There was no clear correlation between hygroscopicity and oxidation state for this relatively hygroscopic SOA.« less

  16. AISI Direct Steelmaking Program. Annual technical report for year ending November 30, 1991

    SciTech Connect

    Aukrust, A.

    1992-01-01

    The Direct Steelmaking Program has completed the third year of research and development since cost-share funding was provided by the Department of Energy. The physical chemistry programs conducted by Carnegie Mellon University (CMU) and the Massachusetts Institute of Technology (MIT) have been completed. A pilot plant has been constructed and successfully operated at Universal, Pennsylvania, and construction of a new, two-zone vessel pilot plant has been completed and trial operation is underway. The success of the pilot plant operation coupled with the development of process models involving reaction rates, heat-transfer and fluid-flow rates, and mass and energy balances has led to a basic study of a 350,000 tonne per year demonstration plant that gives promise of being a low capital and operating cost alternative for ironmaking as compared to the coke oven, blast furnace process. It has the further advantages of ease of startup and shutdown, lower energy consumption, and modularity so that capacity can be adapted to need. The physical chemistry programs at CMU and MIT studied fundamental reactions among ore, coal, flux, slag, metal droplets, and the liquid metal bath. Work at CMU centered on slag foaming studies, coal devolatilization, dissolution of hematite and wustite pellets in bath smelting slags, reduction of FeO in slag by char, extent of reverse or depostcombustion reactions in postcombustion gases, and developing an overall smelting model.

  17. Copper removal from solid ferrous scrap

    SciTech Connect

    Fruehan, R.J.; Cramb, A.W.

    1991-04-01

    As discussed in detail in the Appendix, copper is detrimental to the properties of steel. Copper is present in most forms of recycled scrap, such as bundles and shredded scrap. Typical levels of copper in these forms of scrap are 0.2 to 0.4%, whereas critical grades of steel require less than 0.1 and often 0.06% Cu. Therefore, these forms of scrap cannot be used alone to produce quality steels. Steelmakers must dilute the copper from lower quality scrap with expensive high quality scrap or direct reduced iron pellets. Currently there is no effective method for removing copper from scrap. The only proven method is improved physical separation which is labor intensive, expensive, and only marginally reduces the copper content. Chemical treatments, such as sulfide treatment of liquid metal and vacuum, are not effective as discussed in the Appendix in detail. Carnegie Mellon University developed a concept for removing copper from solid ferrous scrap at 900--1000{degrees}C using a FeS-Na{sub 2}S reagent. Small laboratory tests showed 90% of the Cu from simulated solid scrap could be removed. The major results of this study are summarized in this report. Details are given in the reports in the Appendix.

  18. Advanced Building Efficiency Testbed Initiative/Intelligent Workplace Energy Supply System; ABETI/IWESS

    SciTech Connect

    David Archer; Frederik Betz; Yun Gu; Rong Li; Flore Marion; Sophie Masson; Ming Qu; Viraj Srivastava; Hongxi Yin; Chaoqin Zhai; Rui Zhang; Elisabeth Aslanian; Berangere Lartigue

    2008-05-31

    ABETI/IWESS is a project carried out by Carnegie Mellon's Center for Building Performance and Diagnostics, the CBPD, supported by the U.S. Department of Energy/EERE, to design, procure, install, operate, and evaluate an energy supply system, an ESS, that will provide power, cooling, heating and ventilation for CBPD's Intelligent Workplace, the IW. The energy sources for this system, the IWESS, are solar radiation and bioDiesel fuel. The components of this overall system are: (1) a solar driven cooling and heating system for the IW comprising solar receivers, an absorption chiller, heat recovery exchanger, and circulation pump; (2) a bioDiesel fueled engine generator with heat recovery exchangers, one on the exhaust to provide steam and the other on the engine coolant to provide heated water; (3) a ventilation system including an enthalpy recovery wheel, an air based heat pump, an active desiccant wheel, and an air circulation fan; and (4) various convective and radiant cooling/heating units and ventilation air diffusers distributed throughout the IW. The goal of the ABETI/IWESS project is to demonstrate an energy supply system for a building space that will provide a healthy, comfortable environment for the occupants and that will reduce the quantity of energy consumed in the operation of a building space by a factor of 2 less than that of a conventional energy supply for power, cooling, heating, and ventilation based on utility power and natural gas fuel for heating.

  19. Houdini: Reconfigurable in-tank robot

    SciTech Connect

    White, D.W.; Slifko, A.D.; Thompson, B.R.

    1995-10-01

    RedZone Robotics, Inc. and Carnegie Mellon University (CMU) are developing a tethered mobile robot, Houdini, to work inside waste storage tanks in support of the Department of Energy`s Environmental Restoration and Waste Management (EM) Program. This project is funded by the DOE`s Environmental Management Office of Technology Development through the Morgantown Energy Technology Center (METC). Our goal is to develop technology that is useful for in-tank operations throughout the DOE`s EM program. The first application of the Houdini system is to support the waste retrieval action planned for the final remediation of the Fernald site`s waste silos. RedZone and CMU have discussed potential applications for the system with personnel from several other DOE sites, and have found that the system would be widely useful in the DOE complex for tasks both inside and outside of waste storage tanks. We are tailoring the first implementation of the Houdini system to the specific needs of the Fernald silo remediation. The Fernald application-specific design constraints are primarily interface issues and should not interfere with the utility of the system at other sites.

  20. Center for Defect Physics - Energy Frontier Research Center (A "Life at the Frontiers of Energy Research" contest entry from the 2011 Energy Frontier Research Centers (EFRCs) Summit and Forum)

    SciTech Connect

    Stocks, G. Malcolm; CDP Staff

    2011-05-01

    'Center for Defect Physics - Energy Frontier Research Center' was submitted by the Center for Defect Physics (CDP) to the 'Life at the Frontiers of Energy Research' video contest at the 2011 Science for Our Nation's Energy Future: Energy Frontier Research Centers (EFRCs) Summit and Forum. Twenty-six EFRCs created short videos to highlight their mission and their work. CDP is directed by G. Malcolm Stocks at Oak Ridge National Laboratory, and is a partnership of scientists from nine institutions: Oak Ridge National Laboratory (lead); Ames Laboratory; Brown University; University of California, Berkeley; Carnegie Mellon University; University of Illinois, Urbana-Champaign; Lawrence Livermore National Laboratory; Ohio State University; and University of Tennessee. The Office of Basic Energy Sciences in the U.S. Department of Energy's Office of Science established the 46 Energy Frontier Research Centers (EFRCs) in 2009. These collaboratively-organized centers conduct fundamental research focused on 'grand challenges' and use-inspired 'basic research needs' recently identified in major strategic planning efforts by the scientific community. The overall purpose is to accelerate scientific progress toward meeting the nation's critical energy challenges.

  1. Aging of secondary organic aerosol from small aromatic VOCs. Changes in chemical composition, mass yield, volatility and hygroscopicity

    DOE PAGES [OSTI]

    Hildebrandt Ruiz, L.; Paciga, A. L.; Cerully, K.; Nenes, A.; Donahue, N. M.; Pandis, S. N.

    2014-12-12

    Secondary organic aerosol (SOA) is transformed after its initial formation, but this chemical aging of SOA is poorly understood. Experiments were conducted in the Carnegie Mellon environmental chamber to form and transform SOA from the photo-oxidation of toluene and other small aromatic volatile organic compounds (VOCs) in the presence of NOx. The effects of chemical aging on organic aerosol (OA) composition, mass yield, volatility and hygroscopicity were explored. Higher exposure to the hydroxyl radical resulted in different OA composition, average carbon oxidation state OSC) and mass yield. The OA oxidation state generally increased during photo-oxidation, and the final OA OSmore » C ranged from -0.29 to 0.45 in the performed experiments. The volatility of OA formed in these different experiments varied by as much as a factor of 30, demonstrating that the OA formed under different oxidizing conditions can have significantly different saturation concentration. There was no clear correlation between hygroscopicity and oxidation state for this relatively hygroscopic SOA.« less

  2. A common language for computer security incidents

    SciTech Connect

    John D. Howard; Thomas A Longstaff

    1998-10-01

    Much of the computer security information regularly gathered and disseminated by individuals and organizations cannot currently be combined or compared because a common language has yet to emerge in the field of computer security. A common language consists of terms and taxonomies (principles of classification) which enable the gathering, exchange and comparison of information. This paper presents the results of a project to develop such a common language for computer security incidents. This project results from cooperation between the Security and Networking Research Group at the Sandia National Laboratories, Livermore, CA, and the CERT{reg_sign} Coordination Center at Carnegie Mellon University, Pittsburgh, PA. This Common Language Project was not an effort to develop a comprehensive dictionary of terms used in the field of computer security. Instead, the authors developed a minimum set of high-level terms, along with a structure indicating their relationship (a taxonomy), which can be used to classify and understand computer security incident information. They hope these high-level terms and their structure will gain wide acceptance, be useful, and most importantly, enable the exchange and comparison of computer security incident information. They anticipate, however, that individuals and organizations will continue to use their own terms, which may be more specific both in meaning and use. They designed the common language to enable these lower-level terms to be classified within the common language structure.

  3. Materials Data on UNiSn (SG:216) by Materials Project

    SciTech Connect

    Kristin Persson

    2015-03-19

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  4. Materials Data on U(Ni2P)2 (SG:136) by Materials Project

    SciTech Connect

    Kristin Persson

    2015-02-09

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  5. Usina Nova Uni o S A A car e lcool | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    o S A A car e lcool Jump to: navigation, search Name: Usina Nova Unio SA Acar e lcool Place: Serrana, Sao Paulo, Brazil Zip: 14150-000 Product: Brazil based...

  6. Advanced, Integrated Control for Building Operations to Achieve 40% Energy Saving

    SciTech Connect

    Lu, Yan; Song, Zhen; Loftness, Vivian; Ji, Kun; Zheng, Sam; Lasternas, Bertrand; Marion, Flore; Yuebin, Yu

    2012-10-15

    We developed and demonstrated a software based integrated advanced building control platform called Smart Energy Box (SEB), which can coordinate building subsystem controls, integrate variety of energy optimization algorithms and provide proactive and collaborative energy management and control for building operations using weather and occupancy information. The integrated control system is a low cost solution and also features: Scalable component based architecture allows to build a solution for different building control system configurations with needed components; Open Architecture with a central data repository for data exchange among runtime components; Extendible to accommodate variety of communication protocols. Optimal building control for central loads, distributed loads and onsite energy resource; uses web server as a loosely coupled way to engage both building operators and building occupants in collaboration for energy conservation. Based on the open platform of SEB, we have investigated and evaluated a variety of operation and energy saving control strategies on Carnegie Mellon University Intelligent Work place which is equipped with alternative cooling/heating/ventilation/lighting methods, including radiant mullions, radiant cooling/heating ceiling panels, cool waves, dedicated ventilation unit, motorized window and blinds, and external louvers. Based on the validation results of these control strategies, they were integrated in SEB in a collaborative and dynamic way. This advanced control system was programmed and computer tested with a model of the Intelligent Workplace's northern section (IWn). The advanced control program was then installed in the IWn control system; the performance was measured and compared with that of the state of the art control system to verify the overall energy savings great than 40%. In addition advanced human machine interfaces (HMI's) were developed to communicate both with building occupants and

  7. Long-Range Untethered Real-Time Live Gas Main Robotic Inspection System

    SciTech Connect

    Hagen Schempf; Daphne D'Zurko

    2004-10-31

    Under funding from the Department of Energy (DOE) and the Northeast Gas Association (NGA), Carnegie Mellon University (CMU) developed an untethered, wireless remote controlled inspection robot dubbed Explorer. The project entailed the design and prototyping of a wireless self-powered video-inspection robot capable of accessing live 6- and 8-inch diameter cast-iron and steel mains, while traversing turns and Ts and elbows under real-time control with live video feedback to an operator. The design is that of a segmented actively articulated and wheel-leg powered robot design, with fisheye imaging capability and self-powered battery storage and wireless real-time communication link. The prototype was functionally tested in an above ground pipe-network, in order to debug all mechanical, electrical and software subsystems, and develop the necessary deployment and retrieval, as well as obstacle-handling scripts. A pressurized natural gas test-section was used to certify it for operation in natural gas at up to 60 psig. Two subsequent live-main field-trials in both cast-iron and steel pipe, demonstrated its ability to be safely launched, operated and retrieved under real-world conditions. The system's ability to safely and repeatably exidrecover from angled and vertical launchers, traverse multi-thousand foot long pipe-sections, make T and varied-angle elbow-turns while wirelessly sending live video and handling command and control messages, was clearly demonstrated. Video-inspection was clearly shown to be a viable tool to understand the state of this critical buried infrastructure, irrespective of low- (cast-iron) or high-pressure (steel) conditions. This report covers the different aspects of specifications, requirements, design, prototyping, integration and testing and field-trialing of the Explorer platform.

  8. A solar thermal cooling and heating system for a building: Experimental and model based performance analysis and design

    SciTech Connect

    Qu, Ming; Yin, Hongxi; Archer, David H.

    2010-02-15

    A solar thermal cooling and heating system at Carnegie Mellon University was studied through its design, installation, modeling, and evaluation to deal with the question of how solar energy might most effectively be used in supplying energy for the operation of a building. This solar cooling and heating system incorporates 52 m{sup 2} of linear parabolic trough solar collectors; a 16 kW double effect, water-lithium bromide (LiBr) absorption chiller, and a heat recovery heat exchanger with their circulation pumps and control valves. It generates chilled and heated water, dependent on the season, for space cooling and heating. This system is the smallest high temperature solar cooling system in the world. Till now, only this system of the kind has been successfully operated for more than one year. Performance of the system has been tested and the measured data were used to verify system performance models developed in the TRaNsient SYstem Simulation program (TRNSYS). On the basis of the installed solar system, base case performance models were programmed; and then they were modified and extended to investigate measures for improving system performance. The measures included changes in the area and orientation of the solar collectors, the inclusion of thermal storage in the system, changes in the pipe diameter and length, and various system operational control strategies. It was found that this solar thermal system could potentially supply 39% of cooling and 20% of heating energy for this building space in Pittsburgh, PA, if it included a properly sized storage tank and short, low diameter connecting pipes. Guidelines for the design and operation of an efficient and effective solar cooling and heating system for a given building space have been provided. (author)

  9. Apportionment of ambient primary and secondary fine particulate matter during a 2001 summer intensive study at the CMU Supersite and NETL Pittsburgh Site

    SciTech Connect

    Delbert J. Eatough; Nolan F. Mangelson; Richard R. Anderson

    2007-10-15

    Gaseous and particulate pollutant concentrations associated with five samples per day collected during a July 2001 summer intensive study at the Pittsburgh Carnegie Mellon University (CMU) Supersite were used to apportion fine particulate matter (PM2.5) into primary and secondary contributions using PMF2. Input to the PMF2 analysis included the concentrations of PM2.5 nonvolatile and semivolatile organic material, elemental carbon (EC), ammonium sulfate, trace element components, gas-phase organic material, and NOx, NO{sub 2}, and O{sub 3} concentrations. A total of 10 factors were identified. These factors are associated with emissions from various sources and facilities including crustal material, gasoline combustion, diesel combustion, and three nearby sources high in trace metals. In addition, four secondary sources were identified, three of which were associated with secondary products of local emissions and were dominated by organic material and one of which was dominated by secondary ammonium sulfate transported to the CMU site from the west and southwest. The three largest contributors to PM2.5 were secondary transported material (dominated by ammonium sulfate) from the west and southwest from sources including coal-fired power plants, coke processing plants and steel mills, (49%), secondary material formed during midday photochemical processes (24%), and gasoline combustion emissions (11%). The other seven sources accounted for the remaining 16% of the PM2.5. Results obtained at the CMU site were comparable to results previously reported at the National Energy Technology Laboratory (NETL), located approximately 18 km south of downtown Pittsburgh. The major contributor at both sites was material transported from the west and southwest. Some difference in nearby sources could be attributed to meteorology as evaluated by HYSPLIT model back-trajectory calculations. 27 refs., 16 figs., 1 tab.

  10. Quarterly technical progress report for the period ending June 30, 1984

    SciTech Connect

    Not Available

    1984-10-01

    The Magnetohydrodynamics Program (Component Development and Integration Facility) in Butte, Montana, continued its site preparation for the TRW first-stage combustor installation. In the area of flue gas cleanup, our in-house research program is continuing its investigation into the causes of sorbent attrition in PETC's fluidized-bed copper oxide process for simultaneous SO/sub 2//NO/sub x/ removal. Interwoven with these tests is a series of spray dryer/electrostatic precipitator tests that are being conducted with the cooperation of Wheelabrator-Frye, Inc. This test series was completed this quarter, and the data show that when using a Kentucky coal, Wheelabrator-Frye's electrostatic precipitator provides excellent particulate control efficiency while using a spray dryer for sulfur dioxide removal. A unique project at Carnegie-Mellon University is looking at the concept of integrated environmental control for coal-fired power plants making use of precombustion, combustion, and postcombustion control, including systems for the simultaneous removal of more than one pollutant. The objective of this research is to develop a computer model and assessment for integrated environmental control systems that utilize conventional or advanced systems. The Liquid Phase Methanol Project Development Unit in LaPorte, Texas, was restarted after a successful shakedown run was completed. PETC has recently begun an in-house research project aimed at exploring the basic chemistry of liquefying coal in the presence of water under supercritical conditions. In the Alternative Fuels Technology Program, the Gulf Research and Development Company has completed the preliminary testing phase of its erosion test loop. Their results indicate that when pumping a coal-water slurry fuel through a flow loop, the erosion rate increases as velocity increases, suggesting a well-defined relationship between these two parameters.

  11. Plasma assisted NO{sub x} reduction in existing coal combustors. Final report

    SciTech Connect

    Yao, S.C.; Russell, T.

    1991-12-31

    The feasibility of NO{sub x} reduction using plasma injection has been investigated. Both numerical and experimental methods were used in the development of this new NO{sub x}reduction technique. The numerical analysis was used to investigate various flow mechanisms in order to provide fundamental support in the development of this new NO{sub x} control technique. The calculations using this approach can give the information of the particle trajectories and distributions which are important for the design of the in-flame plasma injection configuration. The group model also established the necessary ground for further complete modeling of the whole process including the chemical kinetics. Numerical calculations were also performed for a turbulent gas flow field with variable properties. The results provided fundamental understanding of mixing effects encountered in the experiments at Pittsburgh Energy and Technology Center. A small scale experiment facility was designed and constructed at the heterogeneous combustion laboratory at Carnegie Mellon University. A series of tests were conducted in this setup to investigate the potential of the ammonia plasma injection for NO{sub x} reduction and parametric effects of this process. The experimental results are very promising. About 86% NO{sub x} reduction was achieved using ammonia radicals produced by argon plasma within the present test range. The total percentage of NO{sub x} reduction increases when ammonia flowrate, argon flow rate and initial NO concentration increase and when plasma power and the amount of excess air in the combustor decrease. A combined transport and reaction model was postulated for understanding the mechanism of NO{sub x} reduction using the plasma injection.

  12. Property:Wave Direction | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wave Basin + Uni-Directional + Lakefront Tow Tank + Uni-Directional + Los Angeles and Long Beach Harbors Model + Uni-Directional + M MHL 2D WindWave + Uni-Directional + MHL...

  13. Towards Energy-Centric Computing and Computer Architecture

    SciTech Connect

    2011-02-09

    Technology forecasts indicate that device scaling will continue well into the next decade. Unfortunately, it is becoming extremely difficult to harness this increase in the number of transistorsinto performance due to a number of technological, circuit, architectural, methodological and programming challenges.In this talk, I will argue that the key emerging showstopper is power. Voltage scaling as a means to maintain a constant power envelope with an increase in transistor numbers is hitting diminishing returns. As such, to continue riding the Moore's law we need to look for drastic measures to cut power. This is definitely the case for server chips in future datacenters,where abundant server parallelism, redundancy and 3D chip integration are likely to remove programming, reliability and bandwidth hurdles, leaving power as the only true limiter.I will present results backing this argument based on validated models for future server chips and parameters extracted from real commercial workloads. Then I use these results to project future research directions for datacenter hardware and software.About the speakerBabak Falsafi is a Professor in the School of Computer and Communication Sciences at EPFL, and an Adjunct Professor of Electrical and Computer Engineering and Computer Science at Carnegie Mellon. He is thefounder and the director ofthe Parallel Systems Architecture Laboratory (PARSA) at EPFL where he conducts research onarchitectural support for parallel programming, resilient systems, architectures to break the memory wall, and analytic and simulation tools for computer system performance evaluation.In 1999, in collaboration with T. N. Vijaykumar he showed for the first time that, contrary to conventional wisdom,multiprocessors do not needrelaxed memory consistency models (and the resulting convoluted programming interfaces found and used in modern systems) to achieve high performance. He is a recipient of an NSF CAREER award in 2000

  14. A Virtual Engineering Framework for Simulating Advanced Power System

    SciTech Connect

    Mike Bockelie; Dave Swensen; Martin Denison; Stanislav Borodai

    2008-06-18

    In this report is described the work effort performed to provide NETL with VE-Suite based Virtual Engineering software and enhanced equipment models to support NETL's Advanced Process Engineering Co-simulation (APECS) framework for advanced power generation systems. Enhancements to the software framework facilitated an important link between APECS and the virtual engineering capabilities provided by VE-Suite (e.g., equipment and process visualization, information assimilation). Model enhancements focused on improving predictions for the performance of entrained flow coal gasifiers and important auxiliary equipment (e.g., Air Separation Units) used in coal gasification systems. In addition, a Reduced Order Model generation tool and software to provide a coupling between APECS/AspenPlus and the GE GateCycle simulation system were developed. CAPE-Open model interfaces were employed where needed. The improved simulation capability is demonstrated on selected test problems. As part of the project an Advisory Panel was formed to provide guidance on the issues on which to focus the work effort. The Advisory Panel included experts from industry and academics in gasification, CO2 capture issues, process simulation and representatives from technology developers and the electric utility industry. To optimize the benefit to NETL, REI coordinated its efforts with NETL and NETL funded projects at Iowa State University, Carnegie Mellon University and ANSYS/Fluent, Inc. The improved simulation capabilities incorporated into APECS will enable researchers and engineers to better understand the interactions of different equipment components, identify weaknesses and processes needing improvement and thereby allow more efficient, less expensive plants to be developed and brought on-line faster and in a more cost-effective manner. These enhancements to APECS represent an important step toward having a fully integrated environment for performing plant simulation and engineering

  15. Quantifying the Thermal Behavior of Slags (TRP 9903)

    SciTech Connect

    Alan W. Cramb

    2003-05-30

    Successful operation of a continuous caster is based upon control of heat transfer in the mold. The mold slag is a key component in the success of continuous casting; however, the phenomena that occur in the gap between the shell and the mold are largely unknown as until recently there have been no techniques that allowed visualization and quantification of the solidification behavior of liquid slags. This has lead to slag design being an empirical science or art. Recently a new experimental technique, called Double Hot Thermocouple Technique (DHTT), was developed at Carnegie Mellon University that allowed the solidification behavior of a slag to be observed and quantified under conditions that simulate the thermal conditions that occur in steelmaking environments. This technique allows ladle, tundish and mold slags to be characterized under extreme conditions including those found between the mold wall and the growing shell of a continuous caster. Thus, a program is initiated, under this grant, to quantify and describe the phenomena that occur during the solidification of a slag in a steel mill environment. This will allow slag design to become an engineering science rather than an empirical exercise. The project deliverables were as follows: (1) The further development of a tool that will have broad use in the quantification of slag melting and solidification behavior; and (2) The development of a set of meaningful design criteria for slag application in steel mill environments. The project was broken down into a number of objectives: (a) Develop a systematic understanding of the effect of cooling rate on slag solidification; (b) Develop a systematic understanding on the effect of slag chemistry changes on slag solidification behavior; (c) Develop a method to characterize slag melting; (d) Develop an understanding of the role of the environment on slag solidification and melting; (e) Develop the ability to understand slag solidification under the conditions that

  16. Project Final Report: Building a Community Infrastructure for Scalable On-Line Performance Analysis Tools around Open|SpeedShop

    SciTech Connect

    Galarowicz, James

    2014-01-06

    laboratories Los Alamos and Sandia leveraging co-funding for Krell by ASC’s Common Computing Environment (CCE) program as laid out in the original proposal. The ASC CCE co-funding, coordinated through LLNL, was for 50% of the total project funding, with the ASC CCE portion of the funding going entirely to Krell, while the ASCR funding itself was split between Krell and the funded partners. This report covers the entire project from both funding sources. Additionally, the team leveraged the expertise of software engineering researchers from Carnegie Mellon University, who specialize in software framework design, in order to achieve a broadly acceptable component framework. The Component Based Tool Framework (CBTF) software has been released to the community. Information related to the project and the released software can be found on the CBTF wiki page at: http://sourceforge.net/p/cbtf/wiki/Home

  17. Personal History of Nucleon Polarization Experiments

    DOE R&D Accomplishments

    Chamberlain, O.

    1984-09-01

    The history of nucleon scattering experiments is reviewed, starting with the observation of large proton polarizations in scattering from light elements such as carbon, and ending with the acceleration of polarized proton beams in high-energy synchrotrons. Special mention is made about significant contributions made by C.L. Oxley, L. Wolfenstein, R.D. Tripp, T. Ypsilantis, A. Abragam, M. Borghini, T. Niinikoski, Froissart, Stora, A.D. Krisch, and L.G. Ratner.

  18. DESIGN, CONSTRUCTION AND FIELD DEMONSTRATION OF EXPLORER: A LONG-RANGE UNTETHERED LIVE GASLINE INSPECTION ROBOT SYSTEM

    SciTech Connect

    Dr. George C. Vradis; Dr. Hagen Schempf

    2002-05-01

    through the use of auxiliaries, to be developed in a follow-on phase, that will allow insertion of additional antennas and battery recharge plugs into the pipe under live conditions through inexpensive keyhole sized excavations. The proposed system significantly advances the state of the art in inspection systems for gas distribution mains, which presently consist of tethered systems of limited range (about 500 ft form the point of launch) and limited inspection views. Also current inspection systems have no ability to incorporate additional modules to expand their functionality. This development program is a joint effort among the New York Gas Group (NYGAS; a trade association of the publicly owned gas utilities in New York State), the Jet Propulsion Laboratory (JPL), the Johnson Space Center (JSC), Carnegie Mellon University's (CMU) National Robotics Engineering Consortium (NREC), and the US Department of Energy (DOE) through the National Energy Technology Laboratory (NETL). The DOE's contribution to this project is $499,023 out of a total of $780,735 (not including NASA's contribution). The present report summarizes the accomplishments of the project during the first six months since funding from DOE commenced. The project has achieved its goals for this period as outlined in the report. Currently the fabrication of the prototype is in progress and it should be completed by late-summer 2002. Testing of the prototype in the lab is expected to be completed by November 2002, to be followed by two field demonstrations in early 2003.

  19. The power of event-driven analytics in Large Scale Data Processing

    ScienceCinema

    None

    2011-04-25

    currently responsible for the whole operations of the company. Nuno holds an M.Eng. in Informatics Engineering for the University of Coimbra, and an MBA from the London Business School. Paulo Marques is the CTO of FeedZai, being responsible for product development. Paulo is an Assistant Professor at the University of Coimbra, in the area of Distributed Data Processing, and an Adjunct Associated Professor at Carnegie Mellon, in the US. In the past Paulo lead a large number of projects for institutions like the ESA, Microsoft Research, SciSys, Siemens, among others, being now fully dedicated to FeedZai. Paulo holds a Ph.D. in Distributed Systems from the University of Coimbra.

  20. Proc. Agent 2004 Conf. on Social Dynamics : Interaction, Reflexivity and Emergence

    SciTech Connect

    C. M. Macal, D. Sallach, M. J. North, eds.

    2004-01-01

    I'd like to welcome you to the Agent 2004 conference. As most of you are aware, this conference is the fifth in a series of meetings that began in 1999. A conference followed the next year in 2000. The 2001 conference was skipped because of some conflicts with other conferences, and the conferences have proceeded annually since then. We have the proceedings of the previous conferences available here on CDs. One CD has the proceedings from 1999, 2000, and 2002; the other contains last year's proceedings. The purpose of these conferences is to advance the state of the computational social sciences and to integrate the social sciences with the decision sciences and something that is traditionally known as the management sciences. Those of you in the operations/research area are familiar with the traditional school of modeling simulation that emerged from that scientific area. This conference will bring together a different group of people to talk about the topic of agent-based theories and simulations. This fifth agent conference is one of a group of conferences held annually around the country. Most of you are probably aware of the CASOS Conference held at Carnegie Mellon University, usually in July. UCLA holds the Arrowhead Conference, generally around May. The University of Michigan is now holding a conference as well. Of course everyone is aware of SwarmFest, which has been held annually for about a decade. The Swarm seems to 'swarm' in different locations each year. As you're well aware, this conference is organized into a three-day program. This is the first time we've used three days for the full conference setting. Last year, we held simultaneous sessions, and that didn't work well for most of those who attended. We had complaints from people who missed sessions and papers because of scheduling, so we decided to extend this year's conference by one day. As a result, we now have a program designed to present the papers in a serial sequence rather than in a

  1. The power of event-driven analytics in Large Scale Data Processing

    SciTech Connect

    2011-02-24

    currently responsible for the whole operations of the company. Nuno holds an M.Eng. in Informatics Engineering for the University of Coimbra, and an MBA from the London Business School. Paulo Marques is the CTO of FeedZai, being responsible for product development. Paulo is an Assistant Professor at the University of Coimbra, in the area of Distributed Data Processing, and an Adjunct Associated Professor at Carnegie Mellon, in the US. In the past Paulo lead a large number of projects for institutions like the ESA, Microsoft Research, SciSys, Siemens, among others, being now fully dedicated to FeedZai. Paulo holds a Ph.D. in Distributed Systems from the University of Coimbra.

  2. A COMPUTATIONAL WORKBENCH ENVIRONMENT FOR VIRTUAL POWER PLANT SIMULATION

    SciTech Connect

    Mike Bockelie; Dave Swensen; Martin Denison; Adel Sarofim; Connie Senior

    2004-12-22

    , immersive environment. The Virtual Engineering Framework (VEF), in effect a prototype framework, was developed through close collaboration with NETL supported research teams from Iowa State University Virtual Reality Applications Center (ISU-VRAC) and Carnegie Mellon University (CMU). The VEF is open source, compatible across systems ranging from inexpensive desktop PCs to large-scale, immersive facilities and provides support for heterogeneous distributed computing of plant simulations. The ability to compute plant economics through an interface that coupled the CMU IECM tool to the VEF was demonstrated, and the ability to couple the VEF to Aspen Plus, a commercial flowsheet modeling tool, was demonstrated. Models were interfaced to the framework using VES-Open. Tests were performed for interfacing CAPE-Open-compliant models to the framework. Where available, the developed models and plant simulations have been benchmarked against data from the open literature. The VEF has been installed at NETL. The VEF provides simulation capabilities not available in commercial simulation tools. It provides DOE engineers, scientists, and decision makers with a flexible and extensible simulation system that can be used to reduce the time, technical risk, and cost to develop the next generation of advanced, coal-fired power systems that will have low emissions and high efficiency. Furthermore, the VEF provides a common simulation system that NETL can use to help manage Advanced Power Systems Research projects, including both combustion- and gasification-based technologies.

  3. Annual Report: Carbon Capture Simulation Initiative (CCSI) (30 September 2012)

    SciTech Connect

    Miller, David C.; Syamlal, Madhava; Cottrell, Roger; Kress, Joel D.; Sun, Xin; Sundaresan, S.; Sahinidis, Nikolaos V.; Zitney, Stephen E.; Bhattacharyya, D.; Agarwal, Deb; Tong, Charles; Lin, Guang; Dale, Crystal; Engel, Dave; Calafiura, Paolo; Beattie, Keith; Shinn, John

    2012-09-30

    industrial challenge problems, CCSI ensures that the simulation tools are developed for the carbon capture technologies of most relevance to industry. CCSI is led by the National Energy Technology Laboratory (NETL) and leverages the Department of Energy (DOE) national laboratories' core strengths in modeling and simulation, bringing together the best capabilities at NETL, Los Alamos National Laboratory (LANL), Lawrence Berkeley National Laboratory (LBNL), Lawrence Livermore National Laboratory (LLNL), and Pacific Northwest National Laboratory (PNNL). The CCSI's industrial partners provide representation from the power generation industry, equipment manufacturers, technology providers and engineering and construction firms. The CCSI's academic participants (Carnegie Mellon University, Princeton University, West Virginia University, and Boston University) bring unparalleled expertise in multiphase flow reactors, combustion, process synthesis and optimization, planning and scheduling, and process control techniques for energy processes. During Fiscal Year (FY) 12, CCSI released its first set of computational tools and models. This pre-release, a year ahead of the originally planned first release, is the result of intense industry interest in getting early access to the tools and the phenomenal progress of the CCSI technical team. These initial components of the CCSI Toolset provide new models and computational capabilities that will accelerate the commercial development of carbon capture technologies as well as related technologies, such as those found in the power, refining, chemicals, and gas production industries. The release consists of new tools for process synthesis and optimization to help identify promising concepts more quickly, new physics-based models of potential capture equipment and processes that will reduce the time to design and troubleshoot new systems, a framework to quantify the uncertainty of model predictions, and various enabling tools that provide new

  4. Phonon manipulation with phononic crystals.

    SciTech Connect

    Kim Bongsang; Hopkins, Patrick Edward; Leseman, Zayd C.; Goettler, Drew F.; Su, Mehmet F.; El-Kady, Ihab Fathy; Reinke, Charles M.; Olsson, Roy H., III

    2012-01-01

    In this work, we demonstrated engineered modification of propagation of thermal phonons, i.e. at THz frequencies, using phononic crystals. This work combined theoretical work at Sandia National Laboratories, the University of New Mexico, the University of Colorado Boulder, and Carnegie Mellon University; the MESA fabrication facilities at Sandia; and the microfabrication facilities at UNM to produce world-leading control of phonon propagation in silicon at frequencies up to 3 THz. These efforts culminated in a dramatic reduction in the thermal conductivity of silicon using phononic crystals by a factor of almost 30 as compared with the bulk value, and about 6 as compared with an unpatterned slab of the same thickness. This work represents a revolutionary advance in the engineering of thermoelectric materials for optimal, high-ZT performance. We have demonstrated the significant reduction of the thermal conductivity of silicon using phononic crystal structuring using MEMS-compatible fabrication techniques and in a planar platform that is amenable to integration with typical microelectronic systems. The measured reduction in thermal conductivity as compared to bulk silicon was about a factor of 20 in the cross-plane direction [26], and a factor of 6 in the in-plane direction. Since the electrical conductivity was only reduced by a corresponding factor of about 3 due to the removal of conductive material (i.e., porosity), and the Seebeck coefficient should remain constant as an intrinsic material property, this corresponds to an effective enhancement in ZT by a factor of 2. Given the number of papers in literature devoted to only a small, incremental change in ZT, the ability to boost the ZT of a material by a factor of 2 simply by reducing thermal conductivity is groundbreaking. The results in this work were obtained using silicon, a material that has benefitted from enormous interest in the microelectronics industry and that has a fairly large thermoelectric power

  5. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    Filter by Author Kador, Lothar, E-mail: lothar.kador@uni-bayreuth.de (1) Kreger, Klaus (1) Meichner, Christoph, E-mail: christoph.meichner@uni-bayreuth.de (1) Neuber, Christian (1) ...

  6. Standard model explanations for the NuTeV electroweak measurements

    SciTech Connect

    R. H. Bernstein

    2003-12-23

    The NuTeV Collaboration has measured the electroweak parameters sin{sup 2} {theta}{sub W} and {rho} in neutrino-nucleon deep-inelastic scattering using a sign-selected beam. The nearly pure {nu} or {bar {nu}} beams that result provide many of the cancellations of systematics associated with the Paschos-Wolfenstein relation. The extracted result for sin{sup 2} {theta}{sub W}(on-shell) = 1 - M{sub W}{sup 2}/M{sub Z}{sup 2} is three standard deviations from prediction. We discuss Standard Model explanations for the puzzle.

  7. PETASCALE DATA STORAGE INSTITUTE (PDSI) Final Report

    SciTech Connect

    Gibson, Garth

    2012-11-26

    Petascale computing infrastructures for scientific discovery make petascale demands on information storage capacity, performance, concurrency, reliability, availability, and manageability. The Petascale Data Storage Institute focuses on the data storage problems found in petascale scientific computing environments, with special attention to community issues such as interoperability, community buy-in, and shared tools. The Petascale Data Storage Institute is a collaboration between researchers at Carnegie Mellon University, National Energy Research Scientific Computing Center, Pacific Northwest National Laboratory, Oak Ridge National Laboratory, Sandia National Laboratory, Los Alamos National Laboratory, University of Michigan, and the University of California at Santa Cruz. Because the Institute focuses on low level files systems and storage systems, its role in improving SciDAC systems was one of supporting application middleware such as data management and system-level performance tuning. In retrospect, the Petascale Data Storage Institute’s most innovative and impactful contribution is the Parallel Log-structured File System (PLFS). Published in SC09, PLFS is middleware that operates in MPI-IO or embedded in FUSE for non-MPI applications. Its function is to decouple concurrently written files into a per-process log file, whose impact (the contents of the single file that the parallel application was concurrently writing) is determined on later reading, rather than during its writing. PLFS is transparent to the parallel application, offering a POSIX or MPI-IO interface, and it shows an order of magnitude speedup to the Chombo benchmark and two orders of magnitude to the FLASH benchmark. Moreover, LANL production applications see speedups of 5X to 28X, so PLFS has been put into production at LANL. Originally conceived and prototyped in a PDSI collaboration between LANL and CMU, it has grown to engage many other PDSI institutes, international partners like AWE

  8. Explorer-II: Wireless Self-Powered Visual and NDE Robotic Inspection System for Live Gas Distribution Mains

    SciTech Connect

    Carnegie Mellon University

    2008-09-30

    Carnegie Mellon University (CMU) under contract from Department of Energy/National Energy Technology Laboratory (DoE/NETL) and co-funding from the Northeast Gas Association (NGA), has completed the overall system design, field-trial and Magnetic Flux Leakage (MFL) sensor evaluation program for the next-generation Explorer-II (X-II) live gas main Non-destructive Evaluation (NDE) and visual inspection robot platform. The design is based on the Explorer-I prototype which was built and field-tested under a prior (also DoE- and NGA co-funded) program, and served as the validation that self-powered robots under wireless control could access and navigate live natural gas distribution mains. The X-II system design ({approx}8 ft. and 66 lbs.) was heavily based on the X-I design, yet was substantially expanded to allow the addition of NDE sensor systems (while retaining its visual inspection capability), making it a modular system, and expanding its ability to operate at pressures up to 750 psig (high-pressure and unpiggable steel-pipe distribution mains). A new electronics architecture and on-board software kernel were added to again improve system performance. A locating sonde system was integrated to allow for absolute position-referencing during inspection (coupled with external differential GPS) and emergency-locating. The power system was upgraded to utilize lithium-based battery-cells for an increase in mission-time. The resulting robot-train system with CAD renderings of the individual modules. The system architecture now relies on a dual set of end camera-modules to house the 32-bit processors (Single-Board Computer or SBC) as well as the imaging and wireless (off-board) and CAN-based (on-board) communication hardware and software systems (as well as the sonde-coil and -electronics). The drive-module (2 ea.) are still responsible for bracing (and centering) to drive in push/pull fashion the robot train into and through the pipes and obstacles. The steering modules

  9. Wireless Self-powered Visual and NDE Robotic Inspection System for Live Gas Distribution Mains

    SciTech Connect

    Susan Burkett; Hagen Schempf

    2006-01-31

    Carnegie Mellon University (CMU) under contract from Department of Energy/National Energy Technology Laboratory (DoE/NETL) and co-funding from the Northeast Gas Association (NGA), has completed the overall system design of the next-generation Explorer-II (X-II) live gas main NDE and visual inspection robot platform. The design is based on the Explorer-I prototype which was built and field-tested under a prior (also DoE- and NGA co-funded) program, and served as the validation that self-powered robots under wireless control could access and navigate live natural gas distribution mains. The X-II system design ({approx}8 ft. and 66 lbs.) was heavily based on the X-I design, yet was substantially expanded to allow the addition of NDE sensor systems (while retaining its visual inspection capability), making it a modular system, and expanding its ability to operate at pressures up to 750 psig (high-pressure and unpiggable steel-pipe distribution mains). A new electronics architecture and on-board software kernel were added to again improve system performance. A locating sonde system was integrated to allow for absolute position-referencing during inspection (coupled with external differential GPS) and emergency-locating. The power system was upgraded to utilize lithium-based battery-cells for an increase in mission-time. The system architecture now relies on a dual set of end camera-modules to house the 32-bit processors (Single-Board Computer or SBC) as well as the imaging and wireless (off-board) and CAN-based (on-board) communication hardware and software systems (as well as the sonde-coil and -electronics). The drive-module (2 ea.) are still responsible for bracing (and centering) to drive in push/pull fashion the robot train into and through the pipes and obstacles. The steering modules and their arrangement, still allow the robot to configure itself to perform any-angle (up to 90 deg) turns in any orientation (incl. vertical), and enable the live launching and

  10. Annual Report: Carbon Capture Simulation Initiative (CCSI) (30 September 2013)

    SciTech Connect

    Miller, David C.; Syamlal, Madhava; Cottrell, Roger; Kress, Joel D.; Sundaresan, S.; Sun, Xin; Storlie, C.; Bhattacharyya, D.; Tong, Charles; Zitney, Stephen E; Dale, Crystal; Engel, Dave; Agarwal, Deb; Calafiura, Paolo; Shinn, John

    2014-03-05

    The Carbon Capture Simulation Initiative (CCSI) is a partnership among national laboratories, industry and academic institutions that is developing and deploying state-of-the-art computational modeling and simulation tools to accelerate the commercialization of carbon capture technologies from discovery to development, demonstration, and ultimately the widespread deployment to hundreds of power plants. The CCSI Toolset will provide end users in industry with a comprehensive, integrated suite of scientifically validated models, with uncertainty quantification (UQ), optimization, risk analysis and decision making capabilities. The CCSI Toolset incorporates commercial and open-source software currently in use by industry and is also developing new software tools as necessary to fill technology gaps identified during execution of the project. Ultimately, the CCSI Toolset will (1) enable promising concepts to be more quickly identified through rapid computational screening of devices and processes; (2) reduce the time to design and troubleshoot new devices and processes; (3) quantify the technical risk in taking technology from laboratory-scale to commercial-scale; and (4) stabilize deployment costs more quickly by replacing some of the physical operational tests with virtual power plant simulations. CCSI is led by the National Energy Technology Laboratory (NETL) and leverages the Department of Energy (DOE) national laboratories’ core strengths in modeling and simulation, bringing together the best capabilities at NETL, Los Alamos National Laboratory (LANL), Lawrence Berkeley National Laboratory (LBNL), Lawrence Livermore National Laboratory (LLNL), and Pacific Northwest National Laboratory (PNNL). The CCSI’s industrial partners provide representation from the power generation industry, equipment manufacturers, technology providers and engineering and construction firms. The CCSI’s academic participants (Carnegie Mellon University, Princeton University, West

  11. HIGHLY VARIABLE OBJECTS IN THE PALOMAR-QUEST SURVEY: A BLAZAR...

    Office of Scientific and Technical Information (OSTI)

    Ciro ; Drake, Andrew ; Djorgovski, S. G. ; Graham, Matthew ; Mahabal, Ashish ; Williams, Roy, E-mail: anne.bauer@usm.uni-muenchen.d 2 + Show Author Affiliations Yale ...

  12. Parabel AG | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    search Name: Parabel AG Place: Berlin-Pankow, Berlin, Germany Sector: Solar Product: Sells a thin-film roofing product using UniSolar laminates, and distributes and...

  13. Los Angeles and Long Beach Harbors Model | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Direction Uni-Directional Simulated Beach Yes Description of Beach Point Fermin to Huntington Beach, CA ChannelTunnelFlume ChannelTunnelFlume None Wind Capabilities Wind...

  14. Center for Materials at Irradiation and Mechanical Extremes:...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    a Cu 10 nm nanocrystalline sample being uni-axial compressed to strain of 20% and then stress released. Irradiation Extremes Thrust Traditional structural materials degrade and...

  15. Refractive-index determination of solids from first- and second...

    Office of Scientific and Technical Information (OSTI)

    ; Schedl, Andreas E. ; Neuber, Christian ; Kreger, Klaus ; Schmidt, Hans-Werner, E-mail: hans-werner.schmidt@uni-bayreuth.de 2 + Show Author Affiliations University of ...

  16. What can be learned from optical two-color diffusion and thermodiffusi...

    Office of Scientific and Technical Information (OSTI)

    Authors: Gebhardt, M. ; Khler, W., E-mail: werner.koehler@uni-bayreuth.de 1 + Show Author Affiliations Physikalisches Institut, Universitt Bayreuth, D-95440 Bayreuth ...

  17. Fermilab Today | Director's Corner Archive | 2009

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    the last decades. In high energy physics both the Pontificia Universidad Catlica del Peru (PUCP) and the Universidad Nacional de Ingeniera (UNI) have groups working at...

  18. UES (Electric)- Residential Efficiency Program

    Energy.gov [DOE]

    UniSource Energy Services (UES) offers rebates to its residential customers who have certain energy efficient equipment installed by participating contractors. The rebate is provided directly to...

  19. Burst Buffer Early User Program

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    * Chombo-Crunch + VisIt for carbon sequestration, David Trebotich, Berkeley Lab (BES) * SigmaUniFamSipros bioinformatics codes, Chongle Pan, Oak Ridge National Laboratory (BER)...

  20. UES (Gas)- Commercial Energy Efficiency Rebate Program

    Energy.gov [DOE]

    UniSource Energy Services (UES) offers the Commercial Energy Solutions Program for non-residential gas customers to install energy efficient equipment. Incentives are provided for qualified...

  1. OE Blog Archive | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    prepare to handle situations that could occur. July 18, 2014 Washington State Governor Jay Inslee, UniEnergy Technologies CEO Dr. Z. Gary Yang, and Assistant Secretary Patricia...

  2. IN-VEHICLE, HIGH-POWER ENERGY STORAGE SYSTEMS

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Properties of Uni-directionally Reinforced Hybrid Fiber Composites, " MS thesis in Engineering Mechanics, The Pennsylvania State University, Aug. 2013. * Ross, J. W., "On...

  3. Supernova constraints on neutrino oscillation and EoS for proto-neutron star

    SciTech Connect

    Kajino, T.; Aoki, W.; Cheoun, M.-K.; Hayakawa, T.; Hidaka, J.; Hirai, Y.; Shibagaki, S.; Mathews, G. J.; Nakamura, K.; Suzuki, T.

    2014-05-02

    Core-collapse supernovae eject huge amount of flux of energetic neutrinos which affect explosive nucleosynthesis of rare isotopes like {sup 7}Li, {sup 11}B, {sup 92}Nb, {sup 138}La and Ta and r-process elements. Several isotopes depend strongly on the neutrino flavor oscillation due to the Mikheyev-Smirnov-Wolfenstein (MSW) effect. We here discuss how to determine the neutrino temperatures and propose a method to determine still unknown neutrino oscillation parameters, mass hierarchy and ?{sub 13}, simultaneously. Combining the recent experimental constraints on ?{sub 13} with isotopic ratios of the light elements discovered in presolar grains from the Murchison meteorite, we show that our method suggests at a marginal preference for an inverted neutrino mass hierarchy. We also discuss supernova relic neutrinos that may indicate the softness of the equation of state (EoS) of nuclear matter as well as adiabatic conditions of the neutrino oscillation.

  4. Sterile neutrinos and indirect dark matter searches in IceCube

    SciTech Connect

    Argüelles, Carlos A.; Kopp, Joachim E-mail: jkopp@fnal.gov

    2012-07-01

    If light sterile neutrinos exist and mix with the active neutrino flavors, this mixing will affect the propagation of high-energy neutrinos from dark matter annihilation in the Sun. In particular, new Mikheyev-Smirnov-Wolfenstein resonances can occur, leading to almost complete conversion of some active neutrino flavors into sterile states. We demonstrate how this can weaken IceCube limits on neutrino capture and annihilation in the Sun and how potential future conflicts between IceCube constraints and direct detection or collider data might be resolved by invoking sterile neutrinos. We also point out that, if the dark matter-nucleon scattering cross section and the allowed annihilation channels are precisely measured in direct detection and collider experiments in the future, IceCube can be used to constrain sterile neutrino models using neutrinos from the dark matter annihilation.

  5. BR UFF BIG PINEY WILD ROSE BLU E GAP BR UFF UNIT WAMSUT TER

    Energy Information Administration (EIA) (indexed site)

    BIG PINEY TIP TOP BIR D CANYON SWAN FONTEN ELL E LABARGE HOGSBACK CHIMNEY BUT TE BIG PINEY AREA TIP TOP UNI T LINCOLN ROAD BLU E FOREST DEER HILL FOGART Y CREEK GREEN RIVER BEND ...

  6. BR UFF BIG PINEY WILD ROSE BLU E GAP BR UFF UNIT WAMSUT TER

    Gasoline and Diesel Fuel Update

    CHIMNEY BUT TE BIG PINEY AREA TIP TOP UNI T LINCOLN ROAD BLU E FOREST DEER HILL FOGART Y ... TUR TLE HILL ZIEGLER S WASH BLAC K JACK LINCOLN ROAD ST ANDARD DRAW RATT LESN AKEWY AN ...

  7. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    Glazyrin, Konstantin (1) Liermann, Hanns-Peter (1) Ovsyannikov, Sergey V., E-mail: sergey.ovsyannikov@uni-bayreuth.de, E-mail: sergey2503@gmail.com (1) Pakhomova, Anna S. (1) Wenz, ...

  8. Recovery Act State Memos Louisiana

    Energy.gov [DOE] (indexed site)

    ... The systems, which cost from 250,000 to 500,000 to install, are being put in by the local firm South Coast Solar. The panels were manufactured by Uni-Solar, a Michigan-based ...

  9. Phase-field modeling of the beta to omega phase transformation...

    Office of Scientific and Technical Information (OSTI)

    stress states, e.g. uni-axial tensile and compressive, bi-axial tensile and compressive, shear and tri-axial loadings, is studied. The effects of plasticity, stress states ...

  10. UN I T E D S T A T ES O F A M E R I C A

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    ... Shown here are two Uni-Power US-21 modules used for battery charging in an RV. Photo ... courtesy Kyocera Solar, Inc. PV for wireless communications is a wel- come addition. ...

  11. International Advisory Committee for the WCI project

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    A.Faessler (Univ. of Tuebingen, GERMANY)* amand.faessler@uni-tuebingen.de W.Friedman (University of Wisconsin, USA) friedman@nucth.physics.wisc.edu D.Gross (HMI, Berlin, GERMANY) ...

  12. Слайд 1

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Isotopic trends in the production of superheavy nuclei G.G.Adamian, N.V.Antonenko, A.N.Bezbakh, V.V.Sargsyan. W.Scheid, T.M.Shneidman BLTP JINR, Dubna, Giessen Uni Experimental ...

  13. Eyes Witness Report on South Vietnam

    ScienceCinema

    None

    2016-07-12

    Mons. Nielson, conseiller des Etats Unis auprès de L'ONU, apporte son témoignage et exprime son opinion quand à la guerre du Vietnam (Sud)

  14. MHK Technologies/LUKAS | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    left an or front back or high down to a uni directional one way horizontal push These energies are free renewable but still undeveloped yet in navigations Mooring Configuration...

  15. UES (Electric)- Commercial Energy Efficiency Rebate Program

    Energy.gov [DOE]

    UniSource Energy Services (UES) offers the Commercial Energy Solutions Program for non-residential electric customers to upgrade existing equipment with more energy efficient measures. Rebates are...

  16. Mr. John E. Kieling, Chief Hazardous ...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Building 1 Santa Fe, New Mexico 87505-6303 Subject: Panel 6 Closure and Final Waste ... Waste Disposa l Uni t Panel 6 at the Waste Isolation Pilot Plant (W IPP) facility. ...

  17. Recovery Act | Department of Energy

    Energy.gov [DOE] (indexed site)

    18, 2014 Washington State Governor Jay Inslee, UniEnergy Technologies CEO Dr. Z. Gary Yang, and Assistant Secretary Patricia Hoffman (left to right) at the July 8 event in...

  18. Building a Greener, More Resilient Future in Washington State | Department

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    of Energy Building a Greener, More Resilient Future in Washington State Building a Greener, More Resilient Future in Washington State July 18, 2014 - 1:45pm Addthis Washington State Governor Jay Inslee, UniEnergy Technologies CEO Dr. Z. Gary Yang, and Assistant Secretary Patricia Hoffman (left to right) at the July 8 event in Mukilteo, Washington. Photo courtesy of Office of Washington State Governor Jay Inslee Washington State Governor Jay Inslee, UniEnergy Technologies CEO Dr. Z. Gary

  19. Supernova neutrinos and explosive nucleosynthesis

    SciTech Connect

    Kajino, T. [National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan and Department of Astronomy, Graduate School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033 (Japan); Aoki, W. [National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588 (Japan); Cheoun, M.-K. [Department of Physics, Soongsil University, Seoul 156-743 (Korea, Republic of); Hayakawa, T. [Japan Atomic Energy Agency, Shirakara-Shirane 2-4, Tokai-mura, Ibaraki 319-1195 (Japan); Hidaka, J.; Hirai, Y.; Shibagaki, S. [National Astronomical Observatory, 2-21-1 Osawa, Mitaka, Tokyo 181-8588 (Japan); Mathews, G. J. [Center for Astrophysics, Department of Physics, University of Notre Dame, Notre Dame, IN 46556 (United States); Nakamura, K. [Faculty of Science and Engineering, Waseda University, Ohkubo 3-4-1, Shinjuku, Tokyo 169-8555 (Japan); Suzuki, T. [Department of Physics, College of Humanities and Sciences, Nihon University, Sakurajosui 3-25-40, Setagaya-ku, Tokyo 156-8550 (Japan)

    2014-05-09

    Core-collapse supernovae eject huge amount of flux of energetic neutrinos. We studied the explosive nucleosyn-thesis in supernovae and found that several isotopes {sup 7}Li, {sup 11}B, {sup 92}Nb, {sup 138}La and {sup 180}Ta as well as r-process nuclei are affected by the neutrino interactions. The abundance of these isotopes therefore depends strongly on the neutrino flavor oscillation due to the Mikheyev-Smirnov-Wolfenstein (MSW) effect. We discuss first how to determine the neutrino temperatures in order to explain the observed solar system abundances of these isotopes, combined with Galactic chemical evolution of the light nuclei and the heavy r-process elements. We then study the effects of neutrino oscillation on their abundances, and propose a novel method to determine the still unknown neutrino oscillation parameters, mass hierarchy and ?{sub 13}, simultaneously. There is recent evidence that SiC X grains from the Murchison meteorite may contain supernova-produced light elements {sup 11}B and {sup 7}Li encapsulated in the presolar grains. Combining the recent experimental constraints on ?{sub 13}, we show that our method sug-gests at a marginal preference for an inverted neutrino mass hierarchy. Finally, we discuss supernova relic neutrinos that may indicate the softness of the equation of state (EoS) of nuclear matter as well as adiabatic conditions of the neutrino oscillation.

  20. Full CKM matrix with lattice QCD

    SciTech Connect

    Okamoto, Masataka; /Fermilab

    2004-12-01

    The authors show that it is now possible to fully determine the CKM matrix, for the first time, using lattice QCD. |V{sub cd}|, |V{sub cs}|, |V{sub ub}|, |V{sub cb}| and |V{sub us}| are, respectively, directly determined with the lattice results for form factors of semileptonic D {yields} {pi}lv, D {yields} Klv, B {yields} {pi}lv, B {yields} Dlv and K {yields} {pi}lv decays. The error from the quenched approximation is removed by using the MILC unquenced lattice gauge configurations, where the effect of u, d and s quarks is included. The error from the ''chiral'' extrapolation (m{sub l} {yields} m{sub ud}) is greatly reduced by using improved staggered quarks. The accuracy is comparable to that of the Particle Data Group averages. In addition, |V{sub ud}|, |V{sub ts}|, |V{sub ts}| and |V{sub td}| are determined by using unitarity of the CKM matrix and the experimental result for sin (2{beta}). In this way, they obtain all 9 CKM matrix elements, where the only theoretical input is lattice QCD. They also obtain all the Wolfenstein parameters, for the first time, using lattice QCD.

  1. ALL GRADE 5 AND GRADE 8 FASTENERS WHICH DO NOT BEAR ANY MANUFACTURERS'

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    ALL GRADE 5 AND GRADE 8 FASTENERS WHICH DO NOT BEAR ANY MANUFACTURERS' HEADMARKS Grade 5 Grade 8 GRADE 5 FASTENERS WITH THE FOLLOWING MANUFACTURERS' HEADMARKS: GRADE 8 FASTENERS WITH THE FOLLOWING MANUFACTURERS' HEADMARKS: MARK KS MARK J (CA TW JP YU) (Greater than 1/2 inch dia) MARK A NF H M MS Hollow Triangle E MARK KS RT FM KY J UNY A KS RT KY J UNY NF H M MS E FM GRADE 8.2 FASTENERS WITH THE FOLLOWING HEADMARKS: MARK KS KS J KS GRADE A325 FASTENERS WITH THE FOLLOWING HEADMARKS: MARK A325 KS

  2. Environmental Assessment Fact Sheet - Dark Matter, Wimps and Neutrinos

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    experiments proposed to be sited at the Waste Isolation Pilot Plant (WIPP) presently focus on dark matter, weakly interacting massive particles (WIMPs), and neutrinos, all obscure subjects to the average U.S. citizen. Each experiment, in one way or another, tries to answer the questions, "How was the uni- verse created?" and "What is it made of?" For years, astrophysicists have tried to mathematically calculate the mass of the uni- verse. Because of the relationship between

  3. Low Cost Thin Film Building-Integrated PV Systems: Cooperative Research and Development Final Report, CRADA Number CRD-07-239

    SciTech Connect

    Stradins, P.

    2011-10-01

    In this CRADA, NREL's Silicon group members performed the following research activities: (1) investigation of the role of hydrogen in growth of a mixed-phase nc-Si:H/a-Si:H material; (2) role of hydrogen in light-induced degradation of a-Si:H and development of Staebler-Wronski effect resistive a-Si:H; and (3) performing characterizations of UniSolar's a-Si:H and nc-Si materials, with goal to help optimizing large-area uniformity and quality of the UniSolar's nanocrystalline Si:H.

  4. Cosmological and supernova neutrinos

    SciTech Connect

    Kajino, T. [National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan Department of Astronomy, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033 (Japan); Aoki, W. [National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588 (Japan); Balantekin, A. B. [Department of Physics, University of Wisconsin - Madison, Wisconsin 53706 (United States); Cheoun, M.-K. [Department of Physics, Soongsil University, Seoul 156-743 (Korea, Republic of); Hayakawa, T. [Japan Atomic Energy Agency, Shirakara-Shirane 2-4, Tokai-mura, Ibaraki 319-1195 (Japan); Hidaka, J. [National Astronomical Observatory, 2-21-1 Osawa, Mitaka, Tokyo 181-8588 (Japan); Hirai, Y.; Shibagaki, S. [National Astronomical Observatory, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan and Department of Astronomy, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033 (Japan); Kusakabe, M. [School of Liberal Arts and Science, Korea Aerospace University, Goyang 412-791 (Korea, Republic of); Mathews, G. J. [Department of Physics, University of Notre Dame, IN 46556 (United States); Nakamura, K. [Waseda University, Ohkubo 3-4-1, Shinjuku, Tokyo 169-8555 (Japan); Pehlivan, Y. [Mimar Sinan GS, Department of Physics, ?i?li, ?stanbul 34380 (Turkey); Suzuki, T. [Nihon University, Sakurajosui 3-25-40, Setagaya-ku, Tokyo 156-8550 (Japan)

    2014-06-24

    The Big Bang nucleosynthesis (BBN) and the cosmic microwave background (CMB) anisotropies are the pillars of modern cosmology. It has recently been suggested that axion which is a dark matter candidate in the framework of the standard model could condensate in the early universe and induce photon cooling before the epoch of the photon last scattering. Although this may render a solution to the overproduction problem of primordial {sup 7}Li abundance, there arises another serious difficulty of overproducing D abundance. We propose a hybrid dark matter model with both axions and relic supersymmetric (SUSY) particles to solve both overproduction problems of the primordial D and {sup 7}Li abundances simultaneously. The BBN also serves to constrain the nature of neutrinos. Considering non-thermal photons produced in the decay of the heavy sterile neutrinos due to the magnetic moment, we explore the cosmological constraint on the strength of neutrino magnetic moment consistent with the observed light element abundances. Core-collapse supernovae eject huge flux of energetic neutrinos which affect explosive nucleosynthesis of rare isotopes like {sup 7}Li, {sup 11}B, {sup 92}Nb, {sup 138}La and {sup 180}Ta and r-process elements. Several isotopes depend strongly on the neutrino flavor oscillation due to the Mikheyev-Smirnov-Wolfenstein (MSW) effect. Combining the recent experimental constraints on ?{sub 13} with predicted and observed supernova-produced abundance ratio {sup 11}B/{sup 7}Li encapsulated in the presolar grains from the Murchison meteorite, we show a marginal preference for an inverted neutrino mass hierarchy. We also discuss supernova relic neutrinos (SRN) that may indicate the softness of the equation of state (EoS) of nuclear matter and adiabatic conditions of the neutrino oscillation.

  5. A-WEC

    SciTech Connect

    Mouwen, Franc

    2011-11-01

    Presentation from the 2011 Water Peer Review in which the principal investigator discusses design for a floating self-reacting uni-axial point absorber that converts the energy contained in the heave direction of ocean waves into a powerful mechanical stroke. The modelling, analysis and prototype build of such converters were reviewed.

  6. Science and Society-Arms Control

    ScienceCinema

    None

    2016-07-12

    Le Prof.Weisskopf(?) présente le physicien Wolfgang Panofsky qui parle de la stratégie concernant la prolifération nucléaire entre les Etats Unis et l'Union Soviétique

  7. BEO Tram Spectral Data 2014

    DOE Data Explorer

    Torn, Margaret; Serbin, Shawn

    2015-06-10

    Visible to near-infrared (350-1100nm) vegetation spectral reflectance data collected on the BEO automated tram measurement platform during the 2014 growing season. The spectra were collected using a PP Systems UniSpec-DC instrument and was processed to at-surface reflectance and interpolated to 1nm.

  8. Conference B.Bettelheim

    ScienceCinema

    None

    2016-07-12

    Le Dr.Bruno Bettelheim, psychologue américain, d'origine viennoise, a passé son doctorat en psychologie à l'université de Vienne. Il émigra aux Etats-Unis et enseigna la psychologie au Rockford College en Illinois et la psychologie de l'éducation à L'université de Chicago, où il dirigea également l'institut orthogénique Sonia-Shankman pour le traitement des enfants psychotiques. Cet homme a bouleversé la compréhension des relations parents et enfants en y introduisant la psychanalyse. Basé sur ses expériences aux Etats-Unis,il nous parle des changements dans la structure de la famille et ses conséquences pour la relation entre enfants et parents.

  9. Memorial Lew Kowarski

    ScienceCinema

    None

    2016-07-12

    Le DG J.Adams et d'autres intervenants rendent hommage à L.Kowarski (1907-1979), un des pionniers du Cern en 1952, né à St.Petersbourg et physicien, chimiste et ingénieur. Depuis sa retraite en 1972, il se consacra à l'enseignement et est conseiller des Nations Unies.

  10. Microsoft PowerPoint - 17_Li_ARM07_Aerosol_Breakout.ppt [Compatibility Mode]

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Separating Real Aerosol Effects from p g Artifacts Using Space-borne, Air-borne and Ground Measurements and Under- and Ground Measurements and Under standing Physical Processes Using a CRM Zhanqing Li Uni ersit of Mar land University of Maryland Contributors T. Yuan, M.-J. Jeong, R. Zhang and J. Fan Objectives j * Evaluate various effects on remote sensing products from satellite and g p f m ground sensors. * Separate artifacts from the real Separate artifacts from the real effects. * Eventually

  11. The Porcelain Crab Transcriptome and PCAD, the Porcelain Crab Microarray and Sequence Database

    SciTech Connect

    Tagmount, Abderrahmane; Wang, Mei; Lindquist, Erika; Tanaka, Yoshihiro; Teranishi, Kristen S.; Sunagawa, Shinichi; Wong, Mike; Stillman, Jonathon H.

    2010-01-27

    Background: With the emergence of a completed genome sequence of the freshwater crustacean Daphnia pulex, construction of genomic-scale sequence databases for additional crustacean sequences are important for comparative genomics and annotation. Porcelain crabs, genus Petrolisthes, have been powerful crustacean models for environmental and evolutionary physiology with respect to thermal adaptation and understanding responses of marine organisms to climate change. Here, we present a large-scale EST sequencing and cDNA microarray database project for the porcelain crab Petrolisthes cinctipes. Methodology/Principal Findings: A set of ~;;30K unique sequences (UniSeqs) representing ~;;19K clusters were generated from ~;;98K high quality ESTs from a set of tissue specific non-normalized and mixed-tissue normalized cDNA libraries from the porcelain crab Petrolisthes cinctipes. Homology for each UniSeq was assessed using BLAST, InterProScan, GO and KEGG database searches. Approximately 66percent of the UniSeqs had homology in at least one of the databases. All EST and UniSeq sequences along with annotation results and coordinated cDNA microarray datasets have been made publicly accessible at the Porcelain Crab Array Database (PCAD), a feature-enriched version of the Stanford and Longhorn Array Databases.Conclusions/Significance: The EST project presented here represents the third largest sequencing effort for any crustacean, and the largest effort for any crab species. Our assembly and clustering results suggest that our porcelain crab EST data set is equally diverse to the much larger EST set generated in the Daphnia pulex genome sequencing project, and thus will be an important resource to the Daphnia research community. Our homology results support the pancrustacea hypothesis and suggest that Malacostraca may be ancestral to Branchiopoda and Hexapoda. Our results also suggest that our cDNA microarrays cover as much of the transcriptome as can reasonably be captured in

  12. PII: S0375-9601(00)00026-8

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    February 2000 Ž . Physics Letters A 266 2000 19-23 www.elsevier.nlrlocaterphysleta A new class of chaotic circuit J. C. Sprott ) Department of Physics, UniÕersity of Wisconsin, Madison, WI 53706, USA Received 30 November 1999; received in revised form 4 January 2000; accepted 4 January 2000 Communicated by C.R. Doening Abstract A new class of chaotic electrical circuit using only resistors, capacitors, diodes, and inverting operational amplifiers is { Ž . Ž . described. This circuit solves

  13. 1

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Warm Dense Matter - getting a grip at a hot topic October 18, 2016 The first cutting edge simulation of the warm dense electron gas An international team of scientists from Los Alamos National Laboratory, the London Imperial College, and Kiel University (CAU, www.uni-kiel.de/en), headed by Professor Michael Bonitz from the Institute of Theoretical Physics and Astrophysics of CAU, has achieved a major breakthrough in the description of warm dense matter - one of the most active frontiers in

  14. Uniprocessor Performance Analysis of a Representative Workload of Sandia National Laboratories' Scientific Applications.

    SciTech Connect

    Charles Laverty

    2005-10-01

    UNIPROCESSOR PERFORMANCE ANALYSIS OF A REPRESENTATIVE WORKLOAD OF SANDIA NATIONAL LABORATORIES' SCIENTIFIC APPLICATIONS Master of Science in Electrical Engineering New Mexico State University Las Cruces, New Mexico, 2005 Dr. Jeanine Cook, Chair Throughout the last decade computer performance analysis has become absolutely necessary to maximum performance of some workloads. Sandia National Laboratories (SNL) located in Albuquerque, New Mexico is no different in that to achieve maximum performance of large scientific, parallel workloads performance analysis is needed at the uni-processor level. A representative workload has been chosen as the basis of a computer performance study to determine optimal processor characteristics in order to better specify the next generation of supercomputers. Cube3, a finite element test problem developed at SNL is a representative workload of their scientific workloads. This workload has been studied at the uni-processor level to understand characteristics in the microarchitecture that will lead to the overall performance improvement at the multi-processor level. The goal of studying vthis workload at the uni-processor level is to build a performance prediction model that will be integrated into a multi-processor performance model which is currently being developed at SNL. Through the use of performance counters on the Itanium 2 microarchitecture, performance statistics are studied to determine bottlenecks in the microarchitecture and/or changes in the application code that will maximize performance. From source code analysis a performance degrading loop kernel was identified and through the use of compiler optimizations a performance gain of around 20% was achieved.

  15. Crystal structure of an eIF4G-like protein from Danio rerio

    SciTech Connect

    Bae, Euiyoung; Bitto, Eduard; Bingman, Craig A.; McCoy, Jason G.; Wesenberg, Gary E.; Phillips, Jr., George N.

    2012-04-18

    The gene LOC 91917 Danio rerio (zebrafish) encodes a protein annotated in the UniProt knowledgebase as the middle domain of eukaryotic initiation factor 4G domain containing protein b (MIF4Gdb). Its molecular weight is 25.8 kDa, and it comprises 222 amino acid residues. BLAST searches revealed homologues of D. rerio MIF4Gdb in many eukaryotes including humans. The homologue sand MIF4Gdb were identified as members of the Pfam family, MIF4G (PF2854), which is named after the middle domain of eukaryotic initiation factor 4G (eIF4G). eIF4G is a component of eukaryotic translational initiation complex, and contains binding sites for other initiation factors, suggesting its critical role in translational initiation. The MIF4G domain also occurs in several other proteins involved in RNA metabolism, including the Nonsense-mediated mRNA decay 2 protein (NMD2/UPF2), and the nuclear cap-binding protein 80-kDa subunit (CBP80). Sequence and structure analysis of the MIF4G domains in many proteins indicate that the domain assumes an all helical fold and has tandem repeated motifs. The zebrafish protein described here has homology to domains of other proteins variously referred to as NIC-containing proteins (NMD2, eIF4G, CBP80). The biological function of D. rerio MIF4Gdb has not yet been experimentally characterized, and the annotation is based on amino acid sequence comparison. D. rerio MIF4Gdb did not share more than 25% sequence identity with any protein for which the three-dimensional structure is known and was selected as a target for structure determination by the Center for Eukaryotic Structural Genomics (CESG). Here, they report the crystal structure of D. rerio MIF4Gdb (UniGene code Dr.79360, UniProt code Q5EAQ1, CESG target number GO.79294).

  16. START-3: Operational Evaluations of the ISUS Engine Ground Demonstration Thermionic Power System

    SciTech Connect

    Luchau, D.W.; Luke, J.R.; Wyant, F.J.

    1998-10-08

    START-3 was a test program conducted in order to demonstrate and characterize the operational performance of the prototype Integrated Solar Upper Stage (ISUS) thermionic power system. The test device consisted of a graphite thermal storage uni~ multilayer foil insulation, and sixteen thermionic converters electrically connected in a series array. Several thermal input conditions were achieved during the test, which resulted in measuring converter performance at average converter hot shoe temperatures in the range of 1600 K to 2000 K. Results indicate that the ;hermionic converter; did not perform as weil as expected in the array individual sixteen converters is currently being performed.

  17. DATE: REPLY TO Al-l' N OF: SUBJECT: TO:

    Office of Legacy Management (LM)

    oy&$= IL4 2%?5- EFG (07.90) ' Uni,ted bates Government memorandum Department of Energy /Em 7:3/ (5 2L-e DATE: REPLY TO Al-l' N OF: SUBJECT: TO: - MAR 1 1 1991 EM-421 Authority Determination-- Granite City Steel Site, Granite City, Illinois The File The attached review documents the basis for determining whether DOE has authority for taking remedial action at the Granite City Steel Site in Granite City, Illinois, under the Formerly Utilized Sites Remedial Action Program (FUSRAP). The Betatron

  18. Microsoft PowerPoint - TWP_loehnert.ppt

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    TWP-ICE workshop, GISS, November 13-15, 2006 Integrated ground-based retrievals in Darwin during TWP-ICE (preliminary data available) Ulrich Löhnert & Mario Mech University of Cologne Email: loehnert@meteo.uni-koeln.de Continuous profiing of temperature, humidiyt and liquid water content at the Darwin airport from Jan19-Feb13 TWP-ICE workshop, GISS, November 13-15, 2006 HATPRO-Measurements at Darwin Microwave Profiler HATPRO Start: 19 Jan 2006 6 UTC Stop: 14 Feb 2006 1 UTC Latitude: 12.424

  19. National Agricultural-Based Lubricants (NABL) Center

    SciTech Connect

    Honary, Lou

    2013-09-30

    This project, while defined as a one year project from September 30, 2012 – September 30, 2013, was a continuation of a number of tasks that were defined in previous years. Those tasks were performed and were finalized in this period. The UNI-NABL Center, which has been in operation in various forms since 1991, has closed its facilities since September 2013 and will be phasing out in June 2014. This report covers the individual tasks that were identified in the previous reports and provides closure to each task in its final stage.

  20. Transcendental Meditation

    ScienceCinema

    None

    2016-07-12

    K.Wallace, qui vient des Etats Unis, parle des effects physiologiques de la méditation transcendantale. Il a fait son bachelor en physique à l'Université de Los Angeles et son doctorat en physiologie aussi à Los Angeles, mais à l'Institut de Recherche sur le cerveau. Il travaille maintenat à Harvard Medical School ou il continue des recherches biochimiques et physiologiques sur l'application médicale de la méditation transcendantale. Il s'occupe principalement des maladies cardiaques et de hypertension artérielle.

  1. NUSAR: N Reactor Updated Safety Analysis Report, Amendment 21

    SciTech Connect

    Smith, G L

    1989-12-01

    The enclosed pages are Amendment 21 of the N Reactor Updated Safety Analysis Report (NUSAR). NUSAR, formerly UNI-M-90, was revised by 18 amendments that were issued by UNC Nuclear Industries, the contractor previously responsible for N Reactor operations. As of June 1987, Westinghouse Hanford Company (WHC) acquired the operations and engineering contract for N Reactor and other facilities at Hanford. The document number for NUSAR then became WHC-SP-0297. The first revision was issued by WHC as Amendment 19, prepared originally by UNC. Summaries of each of the amendments are included in NUSAR Section 1.1.

  2. Californium--palladium metal neutron source material

    DOEpatents

    Dahlen, B.L.; Mosly, W.C. Jr.; Smith, P.K.; Albenesius, E.L.

    1974-01-22

    Californium, as metal or oxide, is uniformly dispersed throughout a noble metal matrix, provided in compact, rod or wire form. A solution of californium values is added to palladium metal powder, dried, blended and pressed into a compact having a uni-form distribution of californium. The californium values are decomposed to californium oxide or metal by heating in an inert or reducing atmosphere. Sintering the compact to a high density closes the matrix around the dispersed californium. The sintered compact is then mechanically shaped into an elongated rod or wire form. (4 claims, no drawings) (Official Gazette)

  3. RADIOCARBON DATING, MEMORIES AND HOPES W.F, Libby

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    RADIOCARBON DATING, MEMORIES AND HOPES W.F, Libby Department of Chemistry* and Institute of Geophysics and Planetary Physics, Uni^sjersity of California Los Angeles --(tm)- HISTORY The cosmic ray production of radiocarbon in matter is the basis of radiocarbon dating. It is made from the most abundant atom in air^nitrogen of mass fourteen. Radiocarbon-- carbon-l4 or C-- lasts 83OO years on the average (see note on radioactive decay for explanation on "half life" and "average

  4. The significance of Cern

    ScienceCinema

    None

    2011-04-25

    Le Prof. V.Weisskopf, DG du Cern de 1961 à 1965, est né à Vienne, a fait ses études à Göttingen et a une carrière académique particulièrement riche. Il a travaillé à Berlin, Copenhague et Berlin et est parti aux Etats Unis pour participer au projet Manhattan et était Prof. au MTT jusqu'à 1960. Revenu en Europe, il a été DG du Cern et lui a donné l'impulsion que l'on sait.

  5. Evaluation and Optimization of a Supercritical Carbon Dioxide Power Conversion Cycle for Nuclear Applications

    SciTech Connect

    Edwin A. Harvego; Michael G. McKellar

    2011-05-01

    There have been a number of studies involving the use of gases operating in the supercritical mode for power production and process heat applications. Supercritical carbon dioxide (CO2) is particularly attractive because it is capable of achieving relatively high power conversion cycle efficiencies in the temperature range between 550°C and 750°C. Therefore, it has the potential for use with any type of high-temperature nuclear reactor concept, assuming reactor core outlet temperatures of at least 550°C. The particular power cycle investigated in this paper is a supercritical CO2 Recompression Brayton Cycle. The CO2 Recompression Brayton Cycle can be used as either a direct or indirect power conversion cycle, depending on the reactor type and reactor outlet temperature. The advantage of this cycle when compared to the helium Brayton Cycle is the lower required operating temperature; 550°C versus 850°C. However, the supercritical CO2 Recompression Brayton Cycle requires an operating pressure in the range of 20 MPa, which is considerably higher than the required helium Brayton cycle operating pressure of 8 MPa. This paper presents results of analyses performed using the UniSim process analyses software to evaluate the performance of the supercritical CO2 Brayton Recompression Cycle for different reactor outlet temperatures. The UniSim model assumed a 600 MWt reactor power source, which provides heat to the power cycle at a maximum temperature of between 550°C and 750°C. The UniSim model used realistic component parameters and operating conditions to model the complete power conversion system. CO2 properties were evaluated, and the operating range for the cycle was adjusted to take advantage of the rapidly changing conditions near the critical point. The UniSim model was then optimized to maximize the power cycle thermal efficiency at the different maximum power cycle operating temperatures. The results of the analyses showed that power cycle thermal

  6. Process to form mesostructured films

    DOEpatents

    Brinker, C. Jeffrey; Anderson, Mark T.; Ganguli, Rahul; Lu, Yunfeng

    1999-01-01

    This invention comprises a method to form a family of supported films film with pore size in the approximate range 0.8-20 nm exhibiting highly ordered microstructures and porosity derived from an ordered micellar or liquid-crystalline organic-inorganic precursor structure that forms during film deposition. Optically transparent, 100-500-nm thick films exhibiting a unique range of microstructures and uni-modal pore sizes are formed in seconds in a continuous coating operation. Applications of these films include sensors, membranes, low dielectric constant interlayers, anti-reflective coatings, and optical hosts.

  7. Process to form mesostructured films

    DOEpatents

    Brinker, C.J.; Anderson, M.T.; Ganguli, R.; Lu, Y.F.

    1999-01-12

    This invention comprises a method to form a family of supported films with pore size in the approximate range 0.8-20 nm exhibiting highly ordered microstructures and porosity derived from an ordered micellar or liquid-crystalline organic-inorganic precursor structure that forms during film deposition. Optically transparent, 100-500-nm thick films exhibiting a unique range of microstructures and uni-modal pore sizes are formed in seconds in a continuous coating operation. Applications of these films include sensors, membranes, low dielectric constant interlayers, anti-reflective coatings, and optical hosts. 12 figs.

  8. LANL: AOT & LANSCE The Pulse May 2012

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    2 Los Alamos National Laboratory * Est. 1943 The Pulse-Newsletter of the Los Alamos Neutron Science Center and Accelerator Operations and Technology Division I N S I D E 2 From Steve'S DeSk 3 experimentS hint that the atomic nucleuS Still holDS Some SurpriSeS 4 Spin anD orbital orDering in Y 1-x la x vo 3 5 probing manganite FilmS chemical uniFor- mitY with polarizeD neutronS 6 heaDS up! By Diana Del Mauro ADEPS Communications As joint Accelerator Operations and Technology (AOT) deputy division

  9. Replacement of petroleum based hydraulic fluids with a soybean-based alternative

    SciTech Connect

    Rose, B.; Rivera, P.

    1998-05-01

    Despite the best preventative measures, ruptured hoses, spills and leaks occur with use of all hydraulic equipment. Although these releases do not usually produce a RCRA regulated waste, they are often a reportable occurrence. Clean-up and subsequent administrative procedure involves additional costs, labor and work delays. Concerns over these releases, especially related to Sandia National Laboratories (SNL) vehicles hauling waste on public roads prompted Fleet Services (FS) to seek an alternative to the standard petroleum based hydraulic fluid. Since 1996 SNL has participated in a pilot program with the University of Iowa (UNI) and selected vehicle manufacturers, notably John Deere, to field test hydraulic fluid produced from soybean oil in twenty of its vehicles. The vehicles included loaders, graders, sweepers, forklifts and garbage trucks. Research was conducted for several years at UNI to modify and market soybean oils for industrial uses. Soybean oil ranks first in worldwide production of vegetable oils (29%), and represents a tremendous renewable resource. Initial tests with soybean oil showed excellent lubrication and wear protection properties. Lack of oxidative stability and polymerization of the oil were concerns. These concerns were being addressed through genetic alteration, chemical modification and use of various additives, and the improved lubricant is in the field testing stage.

  10. Carbon fiber composite characterization in adverse thermal environments.

    SciTech Connect

    Gomez-Vasquez, Sylvia; Brown, Alexander L.; Hubbard, Joshua A.; Ramirez, Ciro J.; Dodd, Amanda B.

    2011-05-01

    The behavior of carbon fiber aircraft composites was studied in adverse thermal environments. The effects of resin composition and fiber orientation were measured in two test configurations: 102 by 127 millimeter (mm) test coupons were irradiated at approximately 22.5 kW/m{sup 2} to measure thermal response, and 102 by 254 mm test coupons were irradiated at approximately 30.7 kW/m{sup 2} to characterize piloted flame spread in the vertically upward direction. Carbon-fiber composite materials with epoxy and bismaleimide resins, and uni-directional and woven fiber orientations, were tested. Bismaleimide samples produced less smoke, and were more resistant to flame spread, as expected for high temperature thermoset resins with characteristically lower heat release rates. All materials lost approximately 20-25% of their mass regardless of resin type, fiber orientation, or test configuration. Woven fiber composites displayed localized smoke jetting whereas uni-directional composites developed cracks parallel to the fibers from which smoke and flames emanated. Swelling and delamination were observed with volumetric expansion on the order of 100% to 200%. The purpose of this work was to provide validation data for SNL's foundational thermal and combustion modeling capabilities.

  11. Fair share on high performance computing systems : what does fair really mean?

    SciTech Connect

    Clearwater, Scott Harvey; Kleban, Stephen David

    2003-03-01

    We report on a performance evaluation of a Fair Share system at the ASCI Blue Mountain supercomputer cluster. We study the impacts of share allocation under Fair Share on wait times and expansion factor. We also measure the Service Ratio, a typical figure of merit for Fair Share systems, with respect to a number of job parameters. We conclude that Fair Share does little to alter important performance metrics such as expansion factor. This leads to the question of what Fair Share means on cluster machines. The essential difference between Fair Share on a uni-processor and a cluster is that the workload on a cluster is not fungible in space or time. We find that cluster machines must be highly utilized and support checkpointing in order for Fair Share to function more closely to the spirit in which it was originally developed.

  12. spherspheroid.f

    Energy Science and Technology Software Center

    2013-01-03

    Program spherspheroid.f scales the solution of electromagnetic forward problem for a plane wave magnetic field impingent on a sphere of arbitrary resistivity, relative permeability, and relative permitivity, for magnetic and electric dipole moments to approximate those due to a spheroid of the desired size and aspect ratio, using D.C. and high frequency limits for the sphere adn spheroid, as documented in J.T. Smith and H.F. Morrison, 2006, "Approximating spheroid inductive responses using spheres"(Geophysics, vol 71,more » G21-G25), Results are given in either time or frequency domain. Time domain results allow modeling turn-on or turn-off step function transmitter wave forms, or square pulse and half sine pulse wave functions with arbitrary pulse length and repetition rate. Pulses may be either uni-modal or bi-modal (alternating sign each half period).« less

  13. Wind turbine with automatic pitch and yaw control

    DOEpatents

    Cheney, Jr., Marvin Chapin; Spierings, Petrus A. M.

    1978-01-01

    A wind turbine having a flexible central beam member supporting aerodynamic blades at opposite ends thereof and fabricated of uni-directional high tensile strength material bonded together into beam form so that the beam is lightweight, and has high tensile strength to carry the blade centrifugal loads, low shear modulus to permit torsional twisting thereof for turbine speed control purposes, and adequate bending stiffness to permit out-of-plane deflection thereof for turbine yard control purposes. A selectively off-set weighted pendulum member is pivotally connected to the turbine and connected to the beam or blade so as to cause torsional twisting thereof in response to centrifugal loading of the pendulum member for turbine speed control purposes.

  14. Phytozome System for Comparative Plant Genomics

    Energy Science and Technology Software Center

    2011-09-27

    Phytozome is a joint project of the Department of Energy's Joint Genome Institute and the UC Berkeley Center for Integrative Genomics to facilitate comparative genomic studies amongst green plants. Families of orthologous and paralogous genes that represent the modern descendents of ancestral gene sets are constructed at key phylogenetic nodes. These families allow easy access to clade specific orthology/paralogy relationships as well as clade specific genes and gene expansions. As of release 7.0, Phytozome providesmore » access to twenty-five sequenced and annotated green plant genomes which have been clustered into gene families at eleven evolutionarily significant nodes., Where possible, each gene has been annotated with PFAM, KOG, KEGG, and PANTHER assignments, and publicly available annotations from RefSeq, UniProt, TAIR, JGI are lyper-linked and searchable.« less

  15. The Absence of Plasma in"Spark Plasma Sintering"

    SciTech Connect

    Hulbert, Dustin M.; Anders, Andre; Dudina, Dina V.; Andersson, Joakim; Jiang, Dongtao; Unuvar, Cosan; Anselmi-Tamburini, Umberto; Lavernia, Enrique J.; Mukherjee, Amiya K.

    2008-04-10

    Spark plasma sintering (SPS) is a remarkable method for synthesizing and consolidating a large variety of both novel and traditional materials. The process typically uses moderate uni-axial pressures (<100 MPa) in conjunction with a pulsing on-off DC current during operation. There are a number of mechanisms proposed to account for the enhanced sintering abilities of the SPS process. Of these mechanisms, the one most commonly put forth and the one that draws the most controversy involves the presence of momentary plasma generated between particles. This study employees three separate experimental methods in an attempt to determine the presence or absence of plasma during SPS. The methods employed include: in-situ atomic emission spectroscopy, direct visual observation and ultra-fast in-situ voltage measurements. It was found using these experimental techniques that no plasma is present during the SPS process. This result was confirmed using several different powders across a wide spectrum of SPS conditions.

  16. Atom-diatom scattering dynamics of spinning molecules

    SciTech Connect

    Eyles, C. J.; Flo, J.; Averbukh, I. Sh.; Leibscher, M.

    2015-01-14

    We present full quantum mechanical scattering calculations using spinning molecules as target states for nuclear spin selective atom-diatom scattering of reactive D+H{sub 2} and F+H{sub 2} collisions. Molecules can be forced to rotate uni-directionally by chiral trains of short, non-resonant laser pulses, with different nuclear spin isomers rotating in opposite directions. The calculations we present are based on rotational wavepackets that can be created in this manner. As our simulations show, target molecules with opposite sense of rotation are predominantly scattered in opposite directions, opening routes for spatially and quantum state selective scattering of close chemical species. Moreover, two-dimensional state resolved differential cross sections reveal detailed information about the scattering mechanisms, which can be explained to a large degree by a classical vector model for scattering with spinning molecules.

  17. Oil spreading in surface waters with an ice cover

    SciTech Connect

    Yapa, P.D.; Weerasuriya, S.A.; Belaskas, D.P.; Chowdhury, T.

    1993-02-01

    A study of oil spreading in surface waters in the presence of a floating ice cover is presented. The ice can be solid or fragmented. Both axi-symmetrical and uni-directional spreading are studied. The report describes the analytical and numerical model development, the experimental set-up, results from the laboratory experiments, and their comparison with the derived theory and the numerical simulation. To analyze the spreading of oil under solid ice, new equations are derived. These equations consider gravity (buoyancy) - inertia phase, gravity (buoyancy) - viscous phase, and the termination of spreading during the buoyancy - surface tension phase. The derivation considers both the constant discharge mode and the constant volume mode. Therefore, a complete description of the spreading phenomena from the time of initial spill to termination of spreading is presented. The emphasis of the study is on the dominant spreading mechanism for oil under ice, which is the buoyancy-viscous phase.

  18. ISIS++Reference Guide (Iterative Scalable Implicit Solver in C++) Version 1.1

    SciTech Connect

    Alan B. Williams; Benjamin A. Allan; Kyran D. Mish; Robert L. Clay

    1999-04-01

    ISIS++ (Iterative Scalable Implicit Solver in C++) Version 1.1 is a portable, object-oriented framework for solving sparse linear systems of equations. It includes a collection of Krylov solution methods and preconditioners, as well as both uni-processor (serial) and multi-processor (scalable) matrix and vector classes. Though it was developed to solve systems of equations originating from large-scale, 3-D, finite element analyses, it has application in many other fields. This document supersedes the ISIS++ V1.0 Reference Guide, defines the V1. 1 interface specification, and includes the necessary instructions for building and running ISIS++ v 1.1 on Unix platforms. The interface is presented in annotated header format, along with background on design and implementation considerations. A finite difference modeling example problem is included to demonstrate the overall setup and use.

  19. Phytozome: a Tool for Green Plant Comparative Genomics

    DOE Data Explorer

    Phytozome is a joint project of the Department of Energy's Joint Genome Institute and the Center for Integrative Genomics to facilitate comparative genomic studies amongst green plants. Clusters of orthologous and paralogous genes that represent the modern descendents of ancestral gene sets are constructed at key phylogenetic nodes. These clusters allow easy access to clade specific orthology/paralogy relationships as well as clade specific genes and gene expansions. As of release v4.0, Phytozome provides access to nine sequenced and annotated green plant genomes, eight of which have been clustered into gene families at six evolutionarily significant nodes. Where possible, each gene has been annotated with PFAM, KOG, KEGG, and PANTHER assignments, and publicly available annotations from RefSeq, UniProt, TAIR, JGI are hyper-linked and searchable. [Copied from the Overview at http://www.phytozome.net/Phytozome_info.php

  20. Vertical flow chemical detection portal

    DOEpatents

    Linker, Kevin L.; Hannum, David W.; Conrad, Frank James

    1999-01-01

    A portal apparatus for screening objects or persons for the presence of trace amounts of chemical substances such as illicit drugs or explosives. The apparatus has a test space, in which a person may stand, defined by two generally upright sides spanned by a horizontal transom. One or more fans in the transom generate a downward air flow (uni-directional) within the test space. The air flows downwardly from a high pressure upper zone, past the object or person to be screened. Air moving past the object dislodges from the surface thereof both volatile and nonvolatile particles of the target substance. The particles are entrained into the air flow which continues flowing downward to a lower zone of reduced pressure, where the particle-bearing air stream is directed out of the test space and toward preconcentrator and detection components. The sides of the portal are specially configured to partially contain and maintain the air flow.

  1. Vertical flow chemical detection portal

    DOEpatents

    Linker, K.L.; Hannum, D.W.; Conrad, F.J.

    1999-06-22

    A portal apparatus is described for screening objects or persons for the presence of trace amounts of chemical substances such as illicit drugs or explosives. The apparatus has a test space, in which a person may stand, defined by two generally upright sides spanned by a horizontal transom. One or more fans in the transom generate a downward air flow (uni-directional) within the test space. The air flows downwardly from a high pressure upper zone, past the object or person to be screened. Air moving past the object dislodges from the surface thereof both volatile and nonvolatile particles of the target substance. The particles are entrained into the air flow which continues flowing downward to a lower zone of reduced pressure, where the particle-bearing air stream is directed out of the test space and toward preconcentrator and detection components. The sides of the portal are specially configured to partially contain and maintain the air flow. 3 figs.

  2. Prokaryotic Genomes from Microbes Online Database

    DOE Data Explorer

    Alm, Eric J.; Huang, Katherine H.; Price, Morgan N.; Koche, Richard P.; Keller, Keith; Dubchak, Inna L.; Arkin, Adam P.

    To describe the potential functions of genes, MicrobesOnline includes protein family analyses (from InterPro and COG), metabolic maps (from KEGG), links to research papers (from UniProt and PubMed), and operon predictions for every genome. To examine each gene's evolutionary history, MicrobesOnline includes precomputed phylogenetic trees for all the gene families. It displays gene trees with genomic context or it compares the gene tree to the species tree. The tools provided with MicrobesOnline allow users to: compute customized motifs, sequence alignments, and phylogenetic trees change expression patterns in metabolic maps annotate genes in various ways. A browse tree tool and a genome browser are available, along with specialized search capabilities. (Specialized Interface)

  3. Large Matched-Index-of-Refraction (MIR) Flow Systems for International Collaboration In Fluid Mechanics

    SciTech Connect

    Donald M. McEligot; Stefan Becker; Hugh M. McIlroy, Jr.

    2010-07-01

    In recent international collaboration, INL and Uni. Erlangen have developed large MIR flow systems which can be ideal for joint graduate student education and research. The benefit of the MIR technique is that it permits optical measurements to determine flow characteristics in complex passages and around objects to be obtained without locating a disturbing transducer in the flow field and without distortion of the optical paths. The MIR technique is not new itself; others employed it earlier. The innovation of these MIR systems is their large size relative to previous experiments, yielding improved spatial and temporal resolution. This report will discuss the benefits of the technique, characteristics of the systems and some examples of their applications to complex situations. Typically their experiments have provided new fundamental understanding plus benchmark data for assessment and possible validation of computational thermal fluid dynamic codes.

  4. Prokaryotic Genomes from Microbes Online Database

    DOE Data Explorer

    Alm, Eric J.; Huang, Katherine H.; Price, Morgan N.; Koche, Richard P.; Keller, Keith; Dubchak, Inna L.; Arkin, Adam P.

    To describe the potential functions of genes, MicrobesOnline includes protein family analyses (from InterPro and COG), metabolic maps (from KEGG), links to research papers (from UniProt and PubMed), and operon predictions for every genome. To examine each gene's evolutionary history, MicrobesOnline includes precomputed phylogenetic trees for all the gene families. It displays gene trees with genomic context or it compares the gene tree to the species tree. The tools provided with MicrobesOnline allow users to: compute customized motifs, sequence alignments, and phylogenetic trees change expression patterns in metabolic maps annotate genes in various ways The database contains more than 430 genomes. A browse tree tool and a genome browser are available, along with specialized search capabilities. (Specialized Interface)

  5. Note on one-fluid modeling of low-frequency Alfvénic fluctuations in a solar wind plasma with multi-ion components

    SciTech Connect

    Nariyuki, Y.; Umeda, T.; Suzuki, T. K.; Hada, T.

    2015-12-15

    A simple point of view that non-zero Alfvén ratio (residual energy) appears as a consequence of one-fluid modeling of uni-directional Alfvén waves in a solar wind plasma is presented. Since relative speeds among ions are incorporated into the one-fluid model as a pressure anisotropy, the Alfvén ratio can be finite due to the decrease in the phase velocity. It is shown that a proton beam component typically found in the solar wind plasma can contribute to generating non-zero Alfvén ratio observed in the solar wind plasma. Local equilibrium velocity distribution functions of each ion component are also discussed by using maximum entropy principle.

  6. A Tow-Level Progressive Damage for Simulating Carbon-Fiber Textile Composites: Interim Report

    SciTech Connect

    Zywicz, E.

    2000-07-01

    A numerical approach to model the elasto-plastic and tensile damage response of tri-axially braided carbon-fiber polymeric-matrix composites is developed. It is micromechanically based and consists of a simplified unit cell geometry, a plane-stress tow-level constitutive relationship, a one-dimensional undulation constitutive law, and a non-traditional shell element integration rule. The braided composite lamina is idealized as periodic in the plane, and a simplified three-layer representative volume (RV) is assembled from axial and braider tows and pure resin regions. The constituents in each layer are homogenized with an iso-strain assumption in the fiber-direction and an iso-stress condition in the other directions. In the upper and lower layers, the fiber-direction strain is additively decomposed into an undulation and a tow portion. A finite-deformation tow model predicts the plane-stress tow response and is coupled to the undulation constitutive relationship. The overall braid model is implemented in DYNA3D and works with traditional shell elements. The finite-deformation tow constitutive relationship is derived from the fiber elasticity and the isotropic elasto-plastic power-law hardening matrix response using a thermodynamic framework and simple homogenization assumptions. The model replicates tensile damage evolution, in a smeared sense, parallel and perpendicular to the fiber axis and is regularized to yield mesh independent results. The tow-level model demonstrates reasonable agreement, prior to damage, with detailed three-dimensional FE (finite element) elasto-plastic simulations of aligned, periodically arranged, uni-directional composites. The 3-layer braid model response is compared with predictions obtained from detailed micromechanical simulations of the braid's unit cell in uni-axial extension, shear, and flexure for three braid angles. The elastic properties show good agreement as does the non-linear response for loadings dominated by the axial

  7. Optimization and Comparison of Direct and Indirect Supercritical Carbon Dioxide Power Plant Cycles for Nuclear Applications

    SciTech Connect

    Edwin A. Harvego; Michael G. McKellar

    2011-11-01

    There have been a number of studies involving the use of gases operating in the supercritical mode for power production and process heat applications. Supercritical carbon dioxide (CO2) is particularly attractive because it is capable of achieving relatively high power conversion cycle efficiencies in the temperature range between 550 C and 750 C. Therefore, it has the potential for use with any type of high-temperature nuclear reactor concept, assuming reactor core outlet temperatures of at least 550 C. The particular power cycle investigated in this paper is a supercritical CO2 Recompression Brayton Cycle. The CO2 Recompression Brayton Cycle can be used as either a direct or indirect power conversion cycle, depending on the reactor type and reactor outlet temperature. The advantage of this cycle when compared to the helium Brayton cycle is the lower required operating temperature; 550 C versus 850 C. However, the supercritical CO2 Recompression Brayton Cycle requires an operating pressure in the range of 20 MPa, which is considerably higher than the required helium Brayton cycle operating pressure of 8 MPa. This paper presents results of analyses performed using the UniSim process analyses software to evaluate the performance of both a direct and indirect supercritical CO2 Brayton Recompression cycle for different reactor outlet temperatures. The direct supercritical CO2 cycle transferred heat directly from a 600 MWt reactor to the supercritical CO2 working fluid supplied to the turbine generator at approximately 20 MPa. The indirect supercritical CO2 cycle assumed a helium-cooled Very High Temperature Reactor (VHTR), operating at a primary system pressure of approximately 7.0 MPa, delivered heat through an intermediate heat exchanger to the secondary indirect supercritical CO2 Brayton Recompression cycle, again operating at a pressure of about 20 MPa. For both the direct and indirect cycles, sensitivity calculations were performed for reactor outlet temperature

  8. A Molecular Dynamics Study of Chemical Reactions of Solid Pentaerythritol Tetranitrate at Extreme Conditions

    SciTech Connect

    Wu, C J; Manaa, M R; Fried, L E

    2006-05-30

    We have carried out density functional based tight binding (DFTB) molecular dynamics (MD) simulation to study energetic reactions of solid Pentaerythritol Tetranitrate (PETN) at conditions approximating the Chapman-Jouguet (CJ) detonation state. We found that the initial decomposition of PETN molecular solid is characterized by uni-molecular dissociation of the NO{sub 2}groups. Interestingly, energy release from this powerful high explosive was found to proceed in several stages. The large portion of early stage energy release was found to be associated with the formation of H{sub 2}O molecules within a few picoseconds of reaction. It took nearly four times as long for majority of CO{sub 2} products to form, accompanied by a slow oscillatory conversion between CO and CO{sub 2}. The production of N{sub 2} starts after NO{sub 2} loses its oxygen atoms to hydrogen or carbon atoms to form H{sub 2}O or CO. We identified many intermediate species that emerge and contribute to reaction kinetics, and compared our simulation with a thermo-chemical equilibrium calculation. In addition, a detailed chemical kinetics of formation of H{sub 2}O, CO, and CO{sub 2} were developed. Rate constants of formations of H{sub 2}O, CO{sub 2} and N{sub 2} were reported.

  9. Standardization of Thermo-Fluid Modeling in Modelica.Fluid

    SciTech Connect

    Franke, Rudiger; Casella, Francesco; Sielemann, Michael; Proelss, Katrin; Otter, Martin; Wetter, Michael

    2009-09-01

    This article discusses the Modelica.Fluid library that has been included in the Modelica Standard Library 3.1. Modelica.Fluid provides interfaces and basic components for the device-oriented modeling of onedimensional thermo-fluid flow in networks containing vessels, pipes, fluid machines, valves and fittings. A unique feature of Modelica.Fluid is that the component equations and the media models as well as pressure loss and heat transfer correlations are decoupled from each other. All components are implemented such that they can be used for media from the Modelica.Media library. This means that an incompressible or compressible medium, a single or a multiple substance medium with one or more phases might be used with one and the same model as long as the modeling assumptions made hold. Furthermore, trace substances are supported. Modeling assumptions can be configured globally in an outer System object. This covers in particular the initialization, uni- or bi-directional flow, and dynamic or steady-state formulation of mass, energy, and momentum balance. All assumptions can be locally refined for every component. While Modelica.Fluid contains a reasonable set of component models, the goal of the library is not to provide a comprehensive set of models, but rather to provide interfaces and best practices for the treatment of issues such as connector design and implementation of energy, mass and momentum balances. Applications from various domains are presented.

  10. Effect of particles attachment to multi-sized dust grains present in electrostatic sheaths of discharge plasmas

    SciTech Connect

    Zaham, B.; Tahraoui, A. Chekour, S.; Benlemdjaldi, D.

    2014-12-15

    The loss of electrons and ions due to their attachment to a Gauss-distributed sizes of dust grains present in electrostatic sheaths of discharge plasmas is investigated. A uni-dimensional, unmagnetized, and stationary multi-fluid model is proposed. Forces acting on the dust grain along with its charge are self-consistently calculated, within the limits of the orbit motion limited model. The dynamic analysis of dust grains shows that the contribution of the neutral drag force in the net force acting on the dust grain is negligible, whereas the contribution of the gravity force is found considerable only for micrometer particles. The dust grains trapping is only possible when the electrostatic force is balanced by the ion drag and the gravity forces. This trapping occurs for a limited radius interval of micrometer dust grains, which is around the most probable dust grain radius. The effect of electron temperature and ion density at the sheath edge is also discussed. It is shown that the attachment of particles reduces considerably the sheath thickness and induces dust grain deceleration. The increase of the lower limit as well as the upper limit of the dust radius reduces also the sheath thickness.

  11. Nanosized self-emulsifying lipid vesicles of diacylglycerol-PEG lipid conjugates: Biophysical characterization and inclusion of lipophilic dietary supplements

    SciTech Connect

    Koynova, Rumiana; Tihova, Mariana

    2010-04-12

    Hydrated diacylglycerol-PEG lipid conjugates, glyceryl dioleate-PEG12 (GDO-PEG12) and glyceryl dipalmitate-PEG23 (GDP-PEG23), spontaneously form uni- or oligolamellar liposomes in their liquid crystalline phase, in distinct difference from the PEGylated phospholipids which form micelles. GDP-PEG23 exhibits peculiar hysteretic phase behavior and can arrange into a long-living hexagonal phase at ambient and physiological temperatures. Liposomes of GDO-PEG12 and its mixture with soy lecithin exchange lipids with the membranes much more actively than common lecithin liposomes; such an active lipid exchange might facilitate the discharging of the liposome cargo upon uptake and internalization, and can thus be important in drug delivery applications. Diacylglycerol-PEG lipid liposome formulations can encapsulate up to 20-30 wt.% lipophilic dietary supplements such as fish oil, coenzyme Q10, and vitamins D and E. The encapsulation is feasible by way of dry mixing, avoiding the use of organic solvent.

  12. Infiniband Performance Comparisons of SDR, DDR and Infinipath

    SciTech Connect

    Minich, M

    2006-05-30

    This technical report will be comparing the performance between the most common infiniband-related technologies currently available. Included will be TCP-based, MPI-based and low-level performance tests to see what performance can be expected from Mellanox's SDR and DDR as well as PathScale's Infinipath. Also, we will be performing comparisons of the Infinipath on both OpenIB as well as PathScale's ipath stack. Infiniband promises to bring high performance interconnects for I/O (filesystem and networking) to a new cost performance level. Thus, LLNL has been evaluating Infiniband for use as a cluster interconnect. Various issues impact the decision of which interconnect to use in a cluster. This technical report will be looking more closely at the actual performance of the major infiniband technologies present today. Performance testing will focus on latency, and bandwidth (both uni and bi-directional) using both TCP and MPI. In addition, we will be looking at an even lower-level (removing most of the upper-level protocols) and seeing what the connection can really do if the TCP or MPI layers were perfectly written.

  13. Garbage collection for functional languages in a distributed system

    SciTech Connect

    Eckart, J.D.

    1987-01-01

    Garbage collection is a helpful facility provided by many applicative languages such as Prolog, SISAL, FP, and Lisp. While these, and other, languages provide easy recognition of actions that may be executed in parallel, the garbage-collection algorithms used for single-machine environments become significantly more inefficient in multi-machine environments. Thus, in order to make effective use of these languages, more-efficient algorithms for collecting inter-machine structures is needed. Reference marking is the algorithm developed to meet these needs. It takes advantage of the semantics of applicative languages allowing each parallel action to be responsible for collecting any discarded structures it was responsible for creating. Simulation results comparing the performance of reference marking with other distributed garbage-collection algorithms are given. A variety of problem types and sizes are examined to determine the effects of particular styles of computation on each of the garbage-collection algorithms. The results gathered demonstrate the usefulness of the reference-marking algorithm in both uni- and multi-machine systems.

  14. FALDO: a semantic standard for describing the location of nucleotide and protein feature annotation

    DOE PAGES [OSTI]

    Bolleman, Jerven T.; Mungall, Christopher J.; Strozzi, Francesco; Baran, Joachim; Dumontier, Michel; Bonnal, Raoul J. P.; Buels, Robert; Hoehndorf, Robert; Fujisawa, Takatomo; Katayama, Toshiaki; et al

    2016-06-13

    Nucleotide and protein sequence feature annotations are essential to understand biology on the genomic, transcriptomic, and proteomic level. Using Semantic Web technologies to query biological annotations, there was no standard that described this potentially complex location information as subject-predicate-object triples. In this paper, we have developed an ontology, the Feature Annotation Location Description Ontology (FALDO), to describe the positions of annotated features on linear and circular sequences. FALDO can be used to describe nucleotide features in sequence records, protein annotations, and glycan binding sites, among other features in coordinate systems of the aforementioned “omics” areas. Using the same data formatmore » to represent sequence positions that are independent of file formats allows us to integrate sequence data from multiple sources and data types. The genome browser JBrowse is used to demonstrate accessing multiple SPARQL endpoints to display genomic feature annotations, as well as protein annotations from UniProt mapped to genomic locations. Our ontology allows users to uniformly describe – and potentially merge – sequence annotations from multiple sources. Finally, data sources using FALDO can prospectively be retrieved using federalised SPARQL queries against public SPARQL endpoints and/or local private triple stores.« less

  15. High pressure phase-transformation induced texture evolution and strengthening in zirconium metal: Experiment and modeling

    DOE PAGES [OSTI]

    Yu, Xiaohui; Zhang, Ruifeng; Weldon, David; Vogel, Sven C.; Zhang, Jianzhong; Brown, Donald W.; Wang, Yanbin; Reiche, Helmut M.; Wang, Shanmin; Du, Shiyu; et al

    2015-07-28

    We studied the phase-transition induced texture changes and strengthening mechanism for zirconium metal under quasi-hydrostatic compression and uni-axial deformation under confined high pressure using the deformation-DIA (D-DIA) apparatus. It is shown that the experimentally obtained texture for ω-phase Zr can be qualitatively described by combining a subset of orientation variants previously proposed in two different models. The determined flow stress for the high-pressure ω-phase is 0.5–1.2 GPa, more than three times higher than that of the α-phase. Using first-principles calculations, we investigated the mechanical and electronic properties of the two Zr polymorphs. We find that the observed strengthening can bemore » attributed to the relatively strong directional bonding in the ω phase, which significantly increases its shear plastic resistance over the α-phase Zr. The present findings provide an alternate route for Zr metal strengthening by high-pressure phase transformation.« less

  16. High pressure phase-transformation induced texture evolution and strengthening in zirconium metal: Experiment and modeling

    SciTech Connect

    Yu, Xiaohui; Zhang, Ruifeng; Weldon, David; Vogel, Sven C.; Zhang, Jianzhong; Brown, Donald W.; Wang, Yanbin; Reiche, Helmut M.; Wang, Shanmin; Du, Shiyu; Jin, Changqing; Zhao, Yusheng

    2015-07-28

    We studied the phase-transition induced texture changes and strengthening mechanism for zirconium metal under quasi-hydrostatic compression and uni-axial deformation under confined high pressure using the deformation-DIA (D-DIA) apparatus. It is shown that the experimentally obtained texture for ω-phase Zr can be qualitatively described by combining a subset of orientation variants previously proposed in two different models. The determined flow stress for the high-pressure ω-phase is 0.5–1.2 GPa, more than three times higher than that of the α-phase. Using first-principles calculations, we investigated the mechanical and electronic properties of the two Zr polymorphs. We find that the observed strengthening can be attributed to the relatively strong directional bonding in the ω phase, which significantly increases its shear plastic resistance over the α-phase Zr. The present findings provide an alternate route for Zr metal strengthening by high-pressure phase transformation.

  17. Numerical Modeling of Geomechanical Processes Related to CO{sub 2} Injection within Generic Reservoirs

    SciTech Connect

    Eckert, Andreas

    2013-05-31

    In this project generic anticline structures have been used for numerical modeling analyses to study the influence of geometrical parameters, fluid flow boundary conditions, in situ stress regime and inter-bedding friction coefficient on geomechanical risks such as fracture reactivation and fracture generation. The resulting stress states for these structures are also used to determine safe drilling directions and a methodology for wellbore trajection optimization is developed that is applicable for non-Andersonian stress states. The results of the fluid flow simulation show that the type of fluid flow boundary condition is of utmost importance and has significant impact on all injection related parameters. It is recommended that further research is conducted to establish a method to quantify the fluid flow boundary conditions for injection applications. The results of the geomechanical simulation show that in situ stress regime is a crucial, if not the most important, factor determining geomechanical risks. For extension and strike slip stress regimes anticline structures should be favored over horizontally layered basin as they feature higher ΔP{sub c} magnitudes. If sedimentary basins are tectonically relaxed and their state of stress is characterized by the uni-axial strain model the basin is in exact frictional equilibrium and fluids should not be injected. The results also show that low inter bedding friction coefficients effectively decouple layers resulting in lower ΔP{sub c} magnitudes, especially for the compressional stress regime.

  18. Mechanical Properties of Aluminum Matrix Composite Reinforced by Carbothermally Reduced of Fly Ash

    SciTech Connect

    Jamasri; Wildan, M. W.; Sulardjaka; Kusnanto

    2011-01-17

    The addition of fly ash into aluminum as reinforcement can potentially reduce the production cost and density of aluminum. However, mechanical properties of aluminum matrix composite reinforced by fly ash (MMC ALFA) have some limitations due to the characteristic of fly ash. In this study, a carbothermal reduction process of fly ash and activated carbon powder with particle size <32 {mu}m was performed prior to produce MMC ALFA.The process was carried out in a furnace at 1300 deg. C in vacuum condition under argon flow. Synthesis product was analyzed by XRD with Cu-K{sub {alpha}} radiation. From XRD analysis, it shows that the synthesis process can produce SiC powder. The synthesis product was subsequently used as reinforcement particle. Aluminum powder was mixed with 5, 10 and 15% of the synthesized powder, and then uni-axially compacted at pressure of 300 MPa. The compacted product was sintered for 2 hours in argon atmosphere at temperature variation of 550 and 600 deg. C. Flexural strength, hardness and density of MMC ALFA's product were respectively evaluated using a four point bending test method based on ASTM C1161 standard, Brinell hardness scale and Archimedes method. The result of this study shows that the increase of weight of reinforcement can significantly increase the hardness and flexural strength of MMCs. The highest hardness and flexural strength of the MMC product are 300 kg/mm{sup 2} and 107.5 MPa, respectively.

  19. dwholeprinceresp.f90

    Energy Science and Technology Software Center

    2013-01-03

    Program dwholeprinceresp.f90 computes responses at receivers of a detection/discrimination system in the time domain to an induced magnetic dipole polarizability object specified in the frequency domain, in a whole space of a given conductivity. Magnetic fields of a set of loop transmitters are propagated through the conductive medium (e.g. seawater) to an object whose magnetic dipole moment polarizabilities are specified in the frequency domain, the resultant induced magnetic moments calculated, the magnetic fields of themore » induced moments the propagated to a set of user specified receivers (approximated as point dipole receivers), the response at the receivers is convolved with the transmitter waveform, and the result inverse Fourier transformed to get the time domain response at the receivers. The time domain response of the receivers to the primary (direct) transmitter magnetic field is computed separately in a similar manner. Transmitter loops may be approximated with any number of line segments, and any number of receivers may be specified. Square pulse and half sine pulse transmitter wave forms of arbitrary duration are modeled. The waveform may be uni-modal or bi-model (alternating sign). The polariability object may be positioned and oriented arbirarily with respect to the system.« less

  20. Design of defect spins in piezoelectric aluminum nitride for solid-state hybrid quantum technologies

    DOE PAGES [OSTI]

    Seo, Hosung; Govoni, Marco; Galli, Giulia

    2016-02-15

    Spin defects in wide-band gap semiconductors are promising systems for the realization of quantum bits, or qubits, in solid-state environments. To date, defect qubits have only been realized in materials with strong covalent bonds. Here, we introduce a strain-driven scheme to rationally design defect spins in functional ionic crystals, which may operate as potential qubits. In particular, using a combination of state-of-the-art ab-initio calculations based on hybrid density functional and many-body perturbation theory, we predicted that the negatively charged nitrogen vacancy center in piezoelectric aluminum nitride exhibits spin-triplet ground states under realistic uni- and bi-axial strain conditions; such states maymore » be harnessed for the realization of qubits. As a result, the strain-driven strategy adopted here can be readily extended to a wide range of point defects in other wide-band gap semiconductors, paving the way to controlling the spin properties of defects in ionic systems for potential spintronic technologies.« less

  1. Fracture, failure and compression behaviour of a 3D interconnected carbon aerogel (Aerographite) epoxy composite

    DOE PAGES [OSTI]

    Chandrasekaran, S.; Liebig, W. V.; Mecklenberg, M.; Fiedler, B.; Smazna, D.; Adelung, R.; Schulte, K.

    2015-11-04

    Aerographite (AG) is a mechanically robust, lightweight synthetic cellular material, which consists of a 3D interconnected network of tubular carbon [1]. The presence of open channels in AG aids to infiltrate them with polymer matrices, thereby yielding an electrical conducting and lightweight composite. Aerographite produced with densities in the range of 7–15 mg/cm3 was infiltrated with a low viscous epoxy resin by means of vacuum infiltration technique. Detailed morphological and structural investigations on synthesized AG and AG/epoxy composite were performed by scanning electron microscopic techniques. Our present study investigates the fracture and failure of AG/epoxy composites and its energy absorptionmore » capacity under compression. The composites displayed an extended plateau region when uni-axially compressed, which led to an increase in energy absorption of ~133% per unit volume for 1.5 wt% of AG, when compared to pure epoxy. Preliminary results on fracture toughness showed an enhancement of ~19% in KIC for AG/epoxy composites with 0.45 wt% of AG. Furthermore, our observations of fractured surfaces under scanning electron microscope gives evidence of pull-out of arms of AG tetrapod, interface and inter-graphite failure as the dominating mechanism for the toughness improvement in these composites. These observations were consistent with the results obtained from photoelasticity experiments on a thin film AG/epoxy model composite.« less

  2. Transport properties of non-equilibrium metallic alloys

    SciTech Connect

    Wong, K.M.M.

    1987-01-01

    A systematic and quantitative study of upper critical fields, H/sub C2/(T), in disordered bulk alloys with increasing atomic numbers was carried out. They include alloys of Ti-Mo, Ti-Pd, Zr-Mo, Zr-Pd, Zr-Rh, Hf-Mo, and Hf-Ta. A least-squares fitting routine was performed on H/sub C2/(T) with the Werthamer, Helfand, Hohenberg, and Maki theory of dirty superconductors. The localization effects on H/sub C2/(T) were examined by comparing the electronic density of states obtained from specific heat measurements (absence of field-induced delocalization effects) and those derived from fitting critical field data. Measurements on bulk Zr-Ni, Zr-Rh and Hf-Mo alloys gave the first direct confirmation of theoretical predictions on H/sub C2/(T) for the weakly localized 3D systems. To further test the localization theories, magnetoresistance was measured on amorphous Lu-Pd and Lu-Ni alloys. The author also investigated a wide compositional range of U-Fe, U-Co, and U-Ni metallic glasses which contain f-electrons. These uranium glasses exhibit unusual resistivity and superconducting behaviors and have very large upper-critical-field gradients.

  3. Development of thermoelectric fibers for miniature thermoelectric devices

    DOE PAGES [OSTI]

    Ren, Fei; Menchhofer, Paul A.; Kiggans, Jr., James O.; Wang, Hsin

    2016-09-23

    Miniature thermoelectric (TE) devices may be used in a variety of applications such as power sources of small sensors, temperature regulation of precision electronics, etc. Reducing the size of TE elements may also enable design of novel devices with unique form factor and higher device efficiency. Current industrial practice of fabricating TE devices usually involves mechanical removal processes that not only lead to material loss but also limit the geometry of the TE elements. In this project, we explored a powder-processing method for the fabrication of TE fibers with large length-to-area ratio, which could be potentially used for miniature TEmore » devices. Powders were milled from Bi2Te3-based bulk materials and then mixed with a thermoplastic resin dissolved in an organic solvent. Through an extrusion process, flexible, continuous fibers with sub-millimeter diameters were formed. The polymer phase was then removed by sintering. Sintered fibers exhibited similar Seebeck coefficients to the bulk materials. Moreover, their electrical resistivity was much higher, which might be related to the residual porosity and grain boundary contamination. Prototype miniature uni-couples fabricated from these fibers showed a linear I-V behavior and could generate millivolt voltages and output power in the nano-watt range. Further development of these TE fibers requires improvement in their electrical conductivities, which needs a better understanding of the causes that lead to the low conductivity in the sintered fibers.« less

  4. Massive-scale RDF Processing Using Compressed Bitmap Indexes

    SciTech Connect

    Madduri, Kamesh; Wu, Kesheng

    2011-05-26

    The Resource Description Framework (RDF) is a popular data model for representing linked data sets arising from the web, as well as large scienti c data repositories such as UniProt. RDF data intrinsically represents a labeled and directed multi-graph. SPARQL is a query language for RDF that expresses subgraph pattern- nding queries on this implicit multigraph in a SQL- like syntax. SPARQL queries generate complex intermediate join queries; to compute these joins e ciently, we propose a new strategy based on bitmap indexes. We store the RDF data in column-oriented structures as compressed bitmaps along with two dictionaries. This paper makes three new contributions. (i) We present an e cient parallel strategy for parsing the raw RDF data, building dictionaries of unique entities, and creating compressed bitmap indexes of the data. (ii) We utilize the constructed bitmap indexes to e ciently answer SPARQL queries, simplifying the join evaluations. (iii) To quantify the performance impact of using bitmap indexes, we compare our approach to the state-of-the-art triple-store RDF-3X. We nd that our bitmap index-based approach to answering queries is up to an order of magnitude faster for a variety of SPARQL queries, on gigascale RDF data sets.

  5. High-field magnetization processes in actinide intermetallics (invited)

    SciTech Connect

    Franse, J.J.M.; de Boer, F.R.; de Chatel, P.F.; Frings, P.H.; Menovsky, A.A. )

    1991-04-15

    In magnetically ordered intermetallics of uranium with {ital d} transition elements, the magnetic moment on the uranium site is often limited to values below 0.1{mu}{sub {ital B}}, with, in some cases, extremely large magnetic anisotropies. Several approaches are followed for explaining these small uranium moments: opposite directions and almost compensation of the spin and orbital moments, reduction of the uranium 5{ital f} moment by strong hybridization effects between the 5{ital f} and conduction electrons, and very weak itinerant magnetism of the 5{ital f} electrons. In the Laves-phase compounds UFe{sub 2} and UNi{sub 2}, the magnetic data have been explained in terms of opposite spin and orbital moments on the uranium sites. In the heavy-fermion compounds UPt{sub 3} and URu{sub 2}Si{sub 2}, on the contrary, a Kondo approach is followed, although coherence effects largely complicate a proper description. The experimental evidence for these different approaches will be reviewed.

  6. DYNA3D Material Model 71 - Solid Element Test Problem

    SciTech Connect

    Zywicz, E

    2008-01-24

    A general phenomenological-based elasto-plastic nonlinear isotropic strain hardening material model was implemented in DYNA3D for use in solid, beam, truss, and shell elements. The constitutive model, Model 71, is based upon conventional J2 plasticity and affords optional temperature and rate dependence (visco-plasticity). The expressions for strain hardening, temperature dependence, and rate dependence allow it to represent a wide variety of material responses. Options to capture temperature changes due to adiabatic heating and thermal straining are incorporated into the constitutive framework as well. The verification problem developed for this constitutive model consists of four uni-axial right cylinders subject to constant true strain-rate boundary conditions. Three of the specimens have different constant strain rates imposed, while the fourth specimen is subjected to several strain rate jumps. The material parameters developed by Fehlmann (2005) for 21-6-9 Nitronic steel are utilized. As demonstrated below, the finite element (FE) simulations are in excellent agreement with the theoretical responses and indicated the model is functioning as desired. Consequently, this problem serves as both a verification problem and regression test problem for DYNA3D.

  7. A generalized multi-dimensional mathematical model for charging and discharging processes in a supercapacitor

    SciTech Connect

    Allu, Srikanth; Velamur Asokan, Badri; Shelton, William A; Philip, Bobby; Pannala, Sreekanth

    2014-01-01

    A generalized three dimensional computational model based on unied formulation of electrode- electrolyte-electrode system of a electric double layer supercapacitor has been developed. The model accounts for charge transport across the solid-liquid system. This formulation based on volume averaging process is a widely used concept for the multiphase ow equations ([28] [36]) and is analogous to porous media theory typically employed for electrochemical systems [22] [39] [12]. This formulation is extended to the electrochemical equations for a supercapacitor in a consistent fashion, which allows for a single-domain approach with no need for explicit interfacial boundary conditions as previously employed ([38]). In this model it is easy to introduce the spatio-temporal variations, anisotropies of physical properties and it is also conducive for introducing any upscaled parameters from lower length{scale simulations and experiments. Due to the irregular geometric congurations including porous electrode, the charge transport and subsequent performance characteristics of the super-capacitor can be easily captured in higher dimensions. A generalized model of this nature also provides insight into the applicability of 1D models ([38]) and where multidimensional eects need to be considered. In addition, simple sensitivity analysis on key input parameters is performed in order to ascertain the dependence of the charge and discharge processes on these parameters. Finally, we demonstarted how this new formulation can be applied to non-planar supercapacitors

  8. The first pilot project of the consortium for top-down proteomics: A status report

    SciTech Connect

    Dang, Xibei; Scotcher, Jenna; Wu, Si; Chu, Rosalie K.; Tolić, Nikola; Ntai, Ioanna; Thomas, Paul M.; Fellers, Ryan T.; Early, Bryan P.; Zheng, Yupeng; Durbin, Kenneth R.; LeDuc, Richard D.; Thompson, Christopher J.; Pan, Jingxi; Han, Jun; Shaw, Jared B.; Salisbury, Joseph P.; Easterling, Michael; Borchers, Christoph H.; Brodbelt, Jennifer S.; Agar, Jeffery N.; Paša-Tolić, Ljiljana; Kelleher, Neil L.; Young, Nicolas L.

    2014-04-14

    Pilot Project #1—the identification and characterization of human histone H4 proteoforms by top-down MS—is the first project launched by the Consortium for Top-Down Proteomics (CTDP) to refine and validate top-down MS. Within the initial results from seven participating laboratories, all reported the probability-based identification of human histone H4 (UniProt accession P62805) with expectation values ranging from 10-13 to 10-105. Regarding characterization, a total of 74 proteoforms were reported, with 21 done so unambiguously; one new PTM, K79ac, was identified. Inter-laboratory comparison reveals aspects of the results that are consistent, such as the localization of individual PTMs and binary combinations, while other aspects are more variable, such as the accurate characterization of low-abundance proteoforms harboring >2 PTMs. An open-access tool and discussion of proteoform scoring are included, along with a description of general challenges that lie ahead including improved proteoform separations prior to mass spectrometric analysis, better instrumentation performance, and software development.

  9. Structure of a bacterial virus DNA-injection protein complex reveals a decameric assembly with a constricted molecular channel

    DOE PAGES [OSTI]

    Zhao, Haiyan; Speir, Jeffrey A.; Matsui, Tsutomu; Lin, Zihan; Liang, Lingfei; Lynn, Anna Y.; Varnado, Brittany; Weiss, Thomas M.; Tang, Liang; Schuch, Raymond

    2016-02-16

    The multi-layered cell envelope structure of Gram-negative bacteria represents significant physical and chemical barriers for short-tailed phages to inject phage DNA into the host cytoplasm. Here we show that a DNA-injection protein of bacteriophage Sf6, gp12, forms a 465-kDa, decameric assembly in vitro. The electron microscopic structure of the gp12 assembly shows a ~150-Å, mushroom-like architecture consisting of a crown domain and a tube-like domain, which embraces a 25-Å-wide channel that could precisely accommodate dsDNA. The constricted channel suggests that gp12 mediates rapid, uni-directional injection of phage DNA into host cells by providing a molecular conduit for DNA translocation. Themore » assembly exhibits a 10-fold symmetry, which may be a common feature among DNA-injection proteins of P22-like phages and may suggest a symmetry mismatch with respect to the 6-fold symmetric phage tail. As a result, the gp12 monomer is highly flexible in solution, supporting a mechanism for translocation of the protein through the conduit of the phage tail toward the host cell envelope, where it assembles into a DNA-injection device.« less

  10. Metazoan Gene Families from Metazome

    DOE Data Explorer

    Metazome is a joint project of the Department of Energy's Joint Genome Institute and the Center for Integrative Genomics to facilitate comparative genomic studies amongst metazoans. Clusters of orthologous and paralogous genes that represent the modern descendents of ancestral gene sets are constructed at key phylogenetic nodes. These clusters allow easy access to clade specific orthology/paralogy relationships as well as clade specific genes and gene expansions. As of version 2.0.4, Metazome provides access to twenty-four sequenced and annotated metazoan genomes, clustered at nine evolutionarily significant nodes. Where possible, each gene has been annotated with PFAM, KOG, KEGG, and PANTHER assignments, and publicly available annotations from RefSeq, UniProt, Ensembl, and JGI are hyper-linked and searchable. The included organisms (by common name) are: Human, Mouse, Rat, Dog, Opossum, Chicken, Frog, Stickleback, Medaka, Fugu pufferfish; Zebrafish, Seasquirt - savignyi, Seasquirt - intestinalis, Amphioxus, Sea Urchin, Fruitfly, Mosquite, Yellow Fever Mosquito, Silkworm, Red Flour Beetle, Worm, Briggsae Worm, Owl limpet (snail), and Sea anemone. [Copied from Metazome Overview at http://www.metazome.net/Metazome_info.php

  11. Phase-field modeling of the beta to omega phase transformation in Zr–Nb alloys

    DOE PAGES [OSTI]

    Yeddu, Hemantha Kumar; Lookman, Turab

    2015-05-01

    A three-dimensional elastoplastic phase-field model is developed, using the Finite Element Method (FEM), for modeling the athermal beta to omega phase transformation in Zr–Nb alloys by including plastic deformation and strain hardening of the material. The microstructure evolution during athermal transformation as well as under different stress states, e.g. uni-axial tensile and compressive, bi-axial tensile and compressive, shear and tri-axial loadings, is studied. The effects of plasticity, stress states and the stress loading direction on the microstructure evolution as well as on the mechanical properties are studied. The input data corresponding to a Zr – 8 at.% Nb alloy aremore » acquired from experimental studies as well as by using the CALPHAD method. Our simulations show that the four different omega variants grow as ellipsoidal shaped particles. Our results show that due to stress relaxation, the athermal phase transformation occurs slightly more readily in the presence of plasticity compared to that in its absence. The evolution of omega phase is different under different stress states, which leads to the differences in the mechanical properties of the material. The variant selection mechanism, i.e. formation of different variants under different stress loading directions, is also nicely captured by our model.« less

  12. Status of the INL high-temperature electrolysis research program –experimental and modeling

    SciTech Connect

    J. E. O'Brien; C. M. Stoots; M. G. McKellar; E. A. Harvego; K. G. Condie; G. K. Housley; J. S. Herring; J. J. Hartvigsen

    2009-04-01

    This paper provides a status update on the high-temperature electrolysis (HTE) research and development program at the Idaho National Laboratory (INL), with an overview of recent large-scale system modeling results and the status of the experimental program. System analysis results have been obtained using the commercial code UniSim, augmented with a custom high-temperature electrolyzer module. The process flow diagrams for the system simulations include an advanced nuclear reactor as a source of high-temperature process heat, a power cycle and a coupled steam electrolysis loop. Several reactor types and power cycles have been considered, over a range of reactor coolant outlet temperatures. In terms of experimental research, the INL has recently completed an Integrated Laboratory Scale (ILS) HTE test at the 15 kW level. The initial hydrogen production rate for the ILS test was in excess of 5000 liters per hour. Details of the ILS design and operation will be presented. Current small-scale experimental research is focused on improving the degradation characteristics of the electrolysis cells and stacks. Small-scale testing ranges from single cells to multiple-cell stacks. The INL is currently in the process of testing several state-of-the-art anode-supported cells and is working to broaden its relationship with industry in order to improve the long-term performance of the cells.

  13. HIGH-TEMPERATURE ELECTROLYSIS FOR LARGE-SCALE HYDROGEN AND SYNGAS PRODUCTION FROM NUCLEAR ENERGY – SYSTEM SIMULATION AND ECONOMICS

    SciTech Connect

    J. E. O'Brien; M. G. McKellar; E. A. Harvego; C. M. Stoots

    2009-05-01

    A research and development program is under way at the Idaho National Laboratory (INL) to assess the technological and scale-up issues associated with the implementation of solid-oxide electrolysis cell technology for efficient high-temperature hydrogen production from steam. This work is supported by the US Department of Energy, Office of Nuclear Energy, under the Nuclear Hydrogen Initiative. This paper will provide an overview of large-scale system modeling results and economic analyses that have been completed to date. System analysis results have been obtained using the commercial code UniSim, augmented with a custom high-temperature electrolyzer module. Economic analysis results were based on the DOE H2A analysis methodology. The process flow diagrams for the system simulations include an advanced nuclear reactor as a source of high-temperature process heat, a power cycle and a coupled steam electrolysis loop. Several reactor types and power cycles have been considered, over a range of reactor outlet temperatures. Pure steam electrolysis for hydrogen production as well as coelectrolysis for syngas production from steam/carbon dioxide mixtures have both been considered. In addition, the feasibility of coupling the high-temperature electrolysis process to biomass and coal-based synthetic fuels production has been considered. These simulations demonstrate that the addition of supplementary nuclear hydrogen to synthetic fuels production from any carbon source minimizes emissions of carbon dioxide during the production process.

  14. Fourfold symmetric planar Hall effect in epitaxial La{sub 1−x}Sr{sub x}CoO{sub 3} thin films

    SciTech Connect

    Cui, W. Y.; Li, P.; Bai, H. L.

    2015-04-07

    The effect of Sr concentration on the planar Hall effect (PHE) in epitaxial magnetic phase separated La{sub 1−x}Sr{sub x}CoO{sub 3} (0.07 ≤ x ≤ 0.60) thin films was studied systematically. It was found that crystalline anisotropy and spin-orbital coupling are the main contributions to the unexpected fourfold symmetric PHE. The uniaxial anisotropy field was given by H{sub uni} = 70 Oe and cubic anisotropic field H{sub cub} = 143 Oe, respectively. The magnetic anisotropy was weakened by Sr doping, which corresponds with the disappearance of the fourfold symmetry in PHE with the increasing Sr concentration. The first principle calculations proved that the contribution of Co-d orbitals to the magnetic anisotropy strongly depends on the Sr concentration. e{sub g}−d{sub x{sup 2}−y{sup 2}} and e{sub g}−d{sub 3z{sup 2}−r{sup 2}} orbitals play a dominant role in the magnetic anisotropy of the samples with x = 0.125, 0.25, while the t{sub 2g}−d{sub xy}, d{sub yz}, d{sub xz} orbitals contribute mainly to the magnetic anisotropy of the samples with x = 0.375, 0.5, 0.625.

  15. Fracture, failure and compression behaviour of a 3D interconnected carbon aerogel (Aerographite) epoxy composite

    SciTech Connect

    Chandrasekaran, S.; Liebig, W. V.; Mecklenberg, M.; Fiedler, B.; Smazna, D.; Adelung, R.; Schulte, K.

    2015-11-04

    Aerographite (AG) is a mechanically robust, lightweight synthetic cellular material, which consists of a 3D interconnected network of tubular carbon [1]. The presence of open channels in AG aids to infiltrate them with polymer matrices, thereby yielding an electrical conducting and lightweight composite. Aerographite produced with densities in the range of 7–15 mg/cm3 was infiltrated with a low viscous epoxy resin by means of vacuum infiltration technique. Detailed morphological and structural investigations on synthesized AG and AG/epoxy composite were performed by scanning electron microscopic techniques. Our present study investigates the fracture and failure of AG/epoxy composites and its energy absorption capacity under compression. The composites displayed an extended plateau region when uni-axially compressed, which led to an increase in energy absorption of ~133% per unit volume for 1.5 wt% of AG, when compared to pure epoxy. Preliminary results on fracture toughness showed an enhancement of ~19% in KIC for AG/epoxy composites with 0.45 wt% of AG. Furthermore, our observations of fractured surfaces under scanning electron microscope gives evidence of pull-out of arms of AG tetrapod, interface and inter-graphite failure as the dominating mechanism for the toughness improvement in these composites. These observations were consistent with the results obtained from photoelasticity experiments on a thin film AG/epoxy model composite.

  16. Commercial-Scale Performance Predictions for High-Temperature Electrolysis Plants Coupled to Three Advanced Reactor Types

    SciTech Connect

    M. G. McKellar; J. E. O'Brien; J. S. Herring

    2007-09-01

    This report presents results of system analyses that have been developed to assess the hydrogen production performance of commercial-scale high-temperature electrolysis (HTE) plants driven by three different advanced reactor – power-cycle combinations: a high-temperature helium cooled reactor coupled to a direct Brayton power cycle, a supercritical CO2-cooled reactor coupled to a direct recompression cycle, and a sodium-cooled fast reactor coupled to a Rankine cycle. The system analyses were performed using UniSim software. The work described in this report represents a refinement of previous analyses in that the process flow diagrams include realistic representations of the three advanced reactors directly coupled to the power cycles and integrated with the high-temperature electrolysis process loops. In addition, this report includes parametric studies in which the performance of each HTE concept is determined over a wide range of operating conditions. Results of the study indicate that overall thermal-to- hydrogen production efficiencies (based on the low heating value of the produced hydrogen) in the 45 - 50% range can be achieved at reasonable production rates with the high-temperature helium cooled reactor concept, 42 - 44% with the supercritical CO2-cooled reactor and about 33 - 34% with the sodium-cooled reactor.

  17. FALDO: A semantic standard for describing the location of nucleotide and protein feature annotation

    DOE PAGES [OSTI]

    Bolleman, Jerven T.; Mungall, Christopher J.; Strozzi, Francesco; Baran, Joachim; Dumontier, Michel; Bonnal, Raoul J. P.; Buels, Robert; Hoehndorf, Robert; Fujisawa, Takatomo; Katayama, Toshiaki; et al

    2016-06-13

    In this study, nucleotide and protein sequence feature annotations are essential to understand biology on the genomic, transcriptomic, and proteomic level. Using Semantic Web technologies to query biological annotations, there was no standard that described this potentially complex location information as subject-predicate-object triples. Here, we have developed an ontology, the Feature Annotation Location Description Ontology (FALDO), to describe the positions of annotated features on linear and circular sequences. FALDO can be used to describe nucleotide features in sequence records, protein annotations, and glycan binding sites, among other features in coordinate systems of the aforementioned “omics” areas. Using the same datamore » format to represent sequence positions that are independent of file formats allows us to integrate sequence data from multiple sources and data types. The genome browser JBrowse is used to demonstrate accessing multiple SPARQL endpoints to display genomic feature annotations, as well as protein annotations from UniProt mapped to genomic locations. In conclusion, our ontology allows users to uniformly describe – and potentially merge – sequence annotations from multiple sources. Data sources using FALDO can prospectively be retrieved using federalised SPARQL queries against public SPARQL endpoints and/or local private triple stores.« less

  18. SU-E-T-603: Analysis of Optical Tracked Head Inter-Fraction Movements Within Masks to Access Intracranial Immobilization Techniques in Proton Therapy

    SciTech Connect

    Hsi, W; Zeidan, O

    2014-06-01

    Purpose: We present a quantitative methodology utilizing an optical tracking system for monitoring head inter-fraction movements within brain masks to assess the effectiveness of two intracranial immobilization techniques. Methods and Materials: A 3-point-tracking method was developed to measure the mask location for a treatment field at each fraction. Measured displacement of mask location to its location at first fraction is equivalent to the head movement within the mask. Head movements for each of treatment fields were measured over about 10 fractions at each patient for seven patients; five treated in supine and two treated in prone. The Q-fix Base-of-Skull head frame was used in supine while the CIVCO uni-frame baseplate was used in prone. Displacements of recoded couch position of each field post imaging at each fraction were extracted for those seven patients. Standard deviation (S.D.) of head movements and couch displacements was scored for statistical analysis. Results: The accuracy of 3PtTrack method was within 1.0 mm by phantom measurements. Patterns of head movement and couch displacement were similar for patients treated in either supine or prone. In superior-inferior direction, mean value of scored standard deviations over seven patients were 1.6 mm and 3.4 mm for the head movement and the couch displacement, respectively. The result indicated that the head movement combined with a loose fixation between the mask-to-head frame results large couch displacements for each patient, and also large variation between patients. However, the head movement is the main cause for the couch displacement with similar magnitude of around 1.0 mm in anterior-posterior and lateral directions. Conclusions: Optical-tracking methodology independently quantifying head movements could improve immobilization devices by correctly acting on causes for head motions within mask. A confidence in the quality of intracranial immobilization techniques could be more efficient by

  19. SPRED: A machine learning approach for the identification of classical and non-classical secretory proteins in mammalian genomes

    SciTech Connect

    Kandaswamy, Krishna Kumar; Graduate School for Computing in Medicine and Life Sciences, University of Luebeck, 23538 Luebeck ; Pugalenthi, Ganesan; Hartmann, Enno; Kalies, Kai-Uwe; Moeller, Steffen; Suganthan, P.N.; Martinetz, Thomas

    2010-01-15

    Eukaryotic protein secretion generally occurs via the classical secretory pathway that traverses the ER and Golgi apparatus. Secreted proteins usually contain a signal sequence with all the essential information required to target them for secretion. However, some proteins like fibroblast growth factors (FGF-1, FGF-2), interleukins (IL-1 alpha, IL-1 beta), galectins and thioredoxin are exported by an alternative pathway. This is known as leaderless or non-classical secretion and works without a signal sequence. Most computational methods for the identification of secretory proteins use the signal peptide as indicator and are therefore not able to identify substrates of non-classical secretion. In this work, we report a random forest method, SPRED, to identify secretory proteins from protein sequences irrespective of N-terminal signal peptides, thus allowing also correct classification of non-classical secretory proteins. Training was performed on a dataset containing 600 extracellular proteins and 600 cytoplasmic and/or nuclear proteins. The algorithm was tested on 180 extracellular proteins and 1380 cytoplasmic and/or nuclear proteins. We obtained 85.92% accuracy from training and 82.18% accuracy from testing. Since SPRED does not use N-terminal signals, it can detect non-classical secreted proteins by filtering those secreted proteins with an N-terminal signal by using SignalP. SPRED predicted 15 out of 19 experimentally verified non-classical secretory proteins. By scanning the entire human proteome we identified 566 protein sequences potentially undergoing non-classical secretion. The dataset and standalone version of the SPRED software is available at (http://www.inb.uni-luebeck.de/tools-demos/spred/spred).

  20. Anisotropic lattice thermal expansion of PbFeBO{sub 4}: A study by X-ray and neutron diffraction, Raman spectroscopy and DFT calculations

    SciTech Connect

    Murshed, M. Mangir; Mendive, Cecilia B.; Curti, Mariano; Nénert, Gwilherm; Kalita, Patricia E.; Lipinska, Kris; Cornelius, Andrew L.; Huq, Ashfia; Gesing, Thorsten M.

    2014-11-15

    Highlights: • Mullite-type PbFeBO{sub 4} shows uni-axial negative coefficient of thermal expansion. • Anisotropic thermal expansion of the metric parameters was modeled using modified Grüneisen approximation. • The model includes harmonic, quasi-harmonic and intrinsic anharmonic contributions to the internal energy. • DFT calculation, temperature- and pressure-dependent Raman spectra help understand the phonon decay and associated anharmonicity. - Abstract: The lattice thermal expansion of mullite-type PbFeBO{sub 4} is presented in this study. The thermal expansion coefficients of the metric parameters were obtained from composite data collected from temperature-dependent neutron and X-ray powder diffraction between 10 K and 700 K. The volume thermal expansion was modeled using extended Grüneisen first-order approximation to the zero-pressure equation of state. The additive frame of the model includes harmonic, quasi-harmonic and intrinsic anharmonic potentials to describe the change of the internal energy as a function of temperature. The unit-cell volume at zero-pressure and 0 K was optimized during the DFT simulations. Harmonic frequencies of the optical Raman modes at the Γ-point of the Brillouin zone at 0 K were also calculated by DFT, which help to assign and crosscheck the experimental frequencies. The low-temperature Raman spectra showed significant anomaly in the antiferromagnetic regions, leading to softening or hardening of some phonons. Selected modes were analyzed using a modified Klemens model. The shift of the frequencies and the broadening of the line-widths helped to understand the anharmonic vibrational behaviors of the PbO{sub 4}, FeO{sub 6} and BO{sub 3} polyhedra as a function of temperature.

  1. High-density grids for efficient data collection from multiple crystals

    SciTech Connect

    Baxter, Elizabeth L.; Aguila, Laura; Alonso-Mori, Roberto; Barnes, Christopher O.; Bonagura, Christopher A.; Brehmer, Winnie; Brunger, Axel T.; Calero, Guillermo; Caradoc-Davies, Tom T.; Chatterjee, Ruchira; Degrado, William F.; Fraser, James S.; Ibrahim, Mohamed; Kern, Jan; Kobilka, Brian K.; Kruse, Andrew C.; Larsson, Karl M.; Lemke, Heinrik T.; Lyubimov, Artem Y.; Manglik, Aashish; McPhillips, Scott E.; Norgren, Erik; Pang, Siew S.; Soltis, S. M.; Song, Jinhu; Thomaston, Jessica; Tsai, Yingssu; Weis, William I.; Woldeyes, Rahel A.; Yachandra, Vittal; Yano, Junko; Zouni, Athina; Cohen, Aina E.

    2016-01-01

    Higher throughput methods to mount and collect data from multiple small and radiation-sensitive crystals are important to support challenging structural investigations using microfocus synchrotron beamlines. Furthermore, efficient sample-delivery methods are essential to carry out productive femtosecond crystallography experiments at X-ray free-electron laser (XFEL) sources such as the Linac Coherent Light Source (LCLS). To address these needs, a high-density sample grid useful as a scaffold for both crystal growth and diffraction data collection has been developed and utilized for efficient goniometer-based sample delivery at synchrotron and XFEL sources. A single grid contains 75 mounting ports and fits inside an SSRL cassette or uni-puck storage container. The use of grids with an SSRL cassette expands the cassette capacity up to 7200 samples. Grids may also be covered with a polymer film or sleeve for efficient room-temperature data collection from multiple samples. New automated routines have been incorporated into theBlu-Ice/DCSSexperimental control system to support grids, including semi-automated grid alignment, fully automated positioning of grid ports, rastering and automated data collection. Specialized tools have been developed to support crystallization experiments on grids, including a universal adaptor, which allows grids to be filled by commercial liquid-handling robots, as well as incubation chambers, which support vapor-diffusion and lipidic cubic phase crystallization experiments. Experiments in which crystals were loaded into grids or grown on grids using liquid-handling robots and incubation chambers are described. Crystals were screened at LCLS-XPP and SSRL BL12-2 at room temperature and cryogenic temperatures.

  2. PERFORMANCE OF LIQUI-CEL EXTRA-FLOW MEMBRANE CONTRACTOR IN A PURE WATER AND IN A 0.2% SODIUM CHLORIDE SOLUTION (SNO-STR-2001-11).

    SciTech Connect

    YEH,M.; BOGER,J.; HAHN,R.L.

    2001-11-05

    After completion of SNO's first phase measurement of the neutrino charge current, two tons of salt were added into the SNO heavy water to increase the sensitivity of the neutral current measurement (Phase II). Liqui-Cel Extra-Flow Membrane Contactors (simply called Liqui-Cel) are used in the SNO heavy-water circulating system to remove the dissolved gases, such as oxygen, nitrogen, radon, and water vapor from the liquid water. One possible scenario with phase II operation is that the salt may leak through the Liqui-Cel Membrane and come in contact with the vacuum pumps and other metal components of the Heavy-Water Vapor Recovery System. In this scenario, corrosion will damage these components, especially the vacuum pump (Pfeiffer UniDry Pump with cast iron interior), and increase the operational difficulties. A series of tests for the behavior of the Liqui-Cel System in pure water and in salt systems was conducted at the Brookhaven National Laboratory in order to measure the transfer of (a) water vapor and (b) salt, if there is any, through the membrane. Initially a 10-inch by 28-inch Liqui-Cel unit, identical to those used in the SNO heavy-water circulating system, was obtained from SNO site. However, extensive analysis showed that the membrane in this unit was defective: a replacement membrane would cost several thousand dollars. Instead, a smaller, 2.5-inch x 8-inch Liqui-Cel, obtained from Dr. Richard Helmers of the University of British Columbia, was used in this experiment. A comparison of the present experiment with the SNO heavy-water system is done with theoretical calculations. The results are discussed in the following sections.

  3. Polychromatic x-ray micro- and nanodiffraction for spatially-resolved structural studies.

    SciTech Connect

    Budai, J. D.; Liu, W.; Tischler, J. Z.; Pan, Z. W.; Larson, B. C.; Yang, W.; Norton, D. P.; Ice, G. E.; ORNL; Univ. of Georgia; Univ.of Florida; Carnegie Inst. of Washington

    2008-01-01

    The availability of intense, focused synchrotron X-ray microbeams has enabled new techniques for materials investigations with sub-micron spatial resolution. The scanning microbeam setup we have developed at the XOR-UNI beamline at the Advanced Photon Source (APS) is versatile in that it provides 1D, 2D or 3D scans (including depth resolution), and can alternate between polychromatic- and monochromatic-beam modes. Focusing in both modes uses elliptical Kirkpatrick-Baez (K-B) reflecting mirrors. Beam diameters of {approx} 500 nm FWHM are now routine, and 90 nm focus has been demonstrated. In white-beam mode, a CCD detector records a complete Laue diffraction pattern, which is analyzed with an automated indexing program. These X-ray diffraction patterns provide real-space maps of the local lattice structure, crystal orientation, grain morphology, and strain tensor. Spatially-resolved X-ray microdiffraction studies are now providing previously unavailable measurements of local microstructures. These measurements, in turn, yield new insights in several classic fields of materials science. This paper will illustrate the application of polychromatic scanning X-ray microscopy with examples from 1D, 2D and 3D materials systems. In 1D systems, we have mapped the structure and orientation of an individual ZnO nanorod along with the associated Ge catalyst particle used to control the nanocrystal growth. In 2D systems, X-ray microdiffraction studies have revealed the mechanisms for local crystallographic tilting in epitaxial oxide films grown on textured Ni substrates for superconducting applications. In 3D systems, X-ray microscopy investigations have included in-situ studies of microstructural evolution during thermal grain growth in polycrystalline aluminum. In general, these spatially-resolved measurements provide important new insights and are valuable as input for theoretical and computer modeling studies of a wide range of material processes.

  4. Polychromatic X-ray Micro- and Nanodiffraction for Spatially-Resolved Structural Studies

    SciTech Connect

    Budai, John D; Liu, W.; Tischler, Jonathan Zachary; Pan, Zhengwei; Norton, David P.; Larson, Ben C; Yang, Wenge; Ice, Gene E

    2008-01-01

    The availability of intense, focused synchrotron X-ray microbeams has enabled new techniques for materials investigations with sub-micron spatial resolution. The scanning microbeam setup we have developed at the XOR-UNI beamline at the Advanced Photon Source (APS) is versatile in that it provides 1D, 2D or 3D scans (including depth resolution), and can alternate between polychromatic- and monochromatic-beam modes. Focusing in both modes uses elliptical Kirkpatrick-Baez (K-B) reflecting mirrors. Beam diameters of {approx} 500 nm FWHM are now routine, and 90 nm focus has been demonstrated. In white-beam mode, a CCD detector records a complete Laue diffraction pattern, which is analyzed with an automated indexing program. These X-ray diffraction patterns provide real-space maps of the local lattice structure, crystal orientation, grain morphology, and strain tensor. Spatially-resolved X-ray microdiffraction studies are now providing previously unavailable measurements of local microstructures. These measurements, in turn, yield new insights in several classic fields of materials science. This paper will illustrate the application of polychromatic scanning X-ray microscopy with examples from 1D, 2D and 3D materials systems. In 1D systems, we have mapped the structure and orientation of an individual ZnO nanorod along with the associated Ge catalyst particle used to control the nanocrystal growth. In 2D systems, X-ray microdiffraction studies have revealed the mechanisms for local crystallographic tilting in epitaxial oxide films grown on textured Ni substrates for superconducting applications. In 3D systems, X-ray microscopy investigations have included in-situ studies of microstructural evolution during thermal grain growth in polycrystalline aluminum. In general, these spatially-resolved measurements provide important new insights and are valuable as input for theoretical and computer modeling studies of a wide range of material processes.

  5. TacNet Tracker Software

    Energy Science and Technology Software Center

    2008-08-04

    The TacNet Tracker will be used for the monitoring and real-time tracking of personnel and assets in an unlimited number of specific applications. The TacNet Tracker software is a VxWorks Operating System based programming package that controls the functionality for the wearable Tracker. One main use of the TacNet Tracker is in Blue Force Tracking, the ability to track the good guys in an adversarial situation or in a force-on-force or real battle conditions. Themore » purpose of blue force tracking is to provide situational awareness to the battlefield commanders and personnel. There are practical military applications with the TacNet Tracker.The mesh network is a wireless IP communications network that moves data packets from source IP addresses to specific destination IP addresses. Addresses on the TacNet infrastructure utilize an 8-bit network mask (255.0.0.0). In other words, valid TacNet addresses range from 10.0.0.1 to 10.254.254.254. The TacNet software design uses uni-cast transmission techniques because earlier mesh network software releases did not provide for the ability to utilize multi-cast data movement. The TacNet design employs a list of addresses to move information within the TacNet infrastructure. For example, a convoy text file containing the IP addresses of all valid receivers of TacNet information could be used for transmitting the information and for limiting transmission to addresses on the list.« less

  6. High-density grids for efficient data collection from multiple crystals

    SciTech Connect

    Baxter, Elizabeth L.; Aguila, Laura; Alonso-Mori, Roberto; Barnes, Christopher O.; Bonagura, Christopher A.; Brehmer, Winnie; Brunger, Axel T.; Calero, Guillermo; Caradoc-Davies, Tom T.; Chatterjee, Ruchira; Degrado, William F.; Fraser, James S.; Ibrahim, Mohamed; Kern, Jan; Kobilka, Brian K.; Kruse, Andrew C.; Larsson, Karl M.; Lemke, Heinrik T.; Lyubimov, Artem Y.; Manglik, Aashish; McPhillips, Scott E.; Norgren, Erik; Pang, Siew S.; Soltis, S. M.; Song, Jinhu; Thomaston, Jessica; Tsai, Yingssu; Weis, William I.; Woldeyes, Rahel A.; Yachandra, Vittal; Yano, Junko; Zouni, Athina; Cohen, Aina E.

    2015-11-03

    Higher throughput methods to mount and collect data from multiple small and radiation-sensitive crystals are important to support challenging structural investigations using microfocus synchrotron beamlines. Furthermore, efficient sample-delivery methods are essential to carry out productive femtosecond crystallography experiments at X-ray free-electron laser (XFEL) sources such as the Linac Coherent Light Source (LCLS). To address these needs, a high-density sample grid useful as a scaffold for both crystal growth and diffraction data collection has been developed and utilized for efficient goniometer-based sample delivery at synchrotron and XFEL sources. A single grid contains 75 mounting ports and fits inside an SSRL cassette or uni-puck storage container. The use of grids with an SSRL cassette expands the cassette capacity up to 7200 samples. Grids may also be covered with a polymer film or sleeve for efficient room-temperature data collection from multiple samples. New automated routines have been incorporated into theBlu-Ice/DCSSexperimental control system to support grids, including semi-automated grid alignment, fully automated positioning of grid ports, rastering and automated data collection. Specialized tools have been developed to support crystallization experiments on grids, including a universal adaptor, which allows grids to be filled by commercial liquid-handling robots, as well as incubation chambers, which support vapor-diffusion and lipidic cubic phase crystallization experiments. Experiments in which crystals were loaded into grids or grown on grids using liquid-handling robots and incubation chambers are described. As a result, crystals were screened at LCLS-XPP and SSRL BL12-2 at room temperature and cryogenic temperatures.

  7. High-density grids for efficient data collection from multiple crystals

    DOE PAGES [OSTI]

    Baxter, Elizabeth L.; Aguila, Laura; Alonso-Mori, Roberto; Barnes, Christopher O.; Bonagura, Christopher A.; Brehmer, Winnie; Brunger, Axel T.; Calero, Guillermo; Caradoc-Davies, Tom T.; Chatterjee, Ruchira; et al

    2015-11-03

    Higher throughput methods to mount and collect data from multiple small and radiation-sensitive crystals are important to support challenging structural investigations using microfocus synchrotron beamlines. Furthermore, efficient sample-delivery methods are essential to carry out productive femtosecond crystallography experiments at X-ray free-electron laser (XFEL) sources such as the Linac Coherent Light Source (LCLS). To address these needs, a high-density sample grid useful as a scaffold for both crystal growth and diffraction data collection has been developed and utilized for efficient goniometer-based sample delivery at synchrotron and XFEL sources. A single grid contains 75 mounting ports and fits inside an SSRL cassettemore » or uni-puck storage container. The use of grids with an SSRL cassette expands the cassette capacity up to 7200 samples. Grids may also be covered with a polymer film or sleeve for efficient room-temperature data collection from multiple samples. New automated routines have been incorporated into theBlu-Ice/DCSSexperimental control system to support grids, including semi-automated grid alignment, fully automated positioning of grid ports, rastering and automated data collection. Specialized tools have been developed to support crystallization experiments on grids, including a universal adaptor, which allows grids to be filled by commercial liquid-handling robots, as well as incubation chambers, which support vapor-diffusion and lipidic cubic phase crystallization experiments. Experiments in which crystals were loaded into grids or grown on grids using liquid-handling robots and incubation chambers are described. As a result, crystals were screened at LCLS-XPP and SSRL BL12-2 at room temperature and cryogenic temperatures.« less

  8. Geomechanical modeling of reservoir compaction, surface subsidence, and casing damage at the Belridge diatomite field

    SciTech Connect

    FREDRICH,JOANNE T.; DEITRICK,G.L.; ARGUELLO JR.,JOSE G.; DEROUFFIGNAC,E.P.

    2000-05-01

    Geologic, and historical well failure, production, and injection data were analyzed to guide development of three-dimensional geomechanical models of the Belridge diatomite field, California. The central premise of the numerical simulations is that spatial gradients in pore pressure induced by production and injection in a low permeability reservoir may perturb the local stresses and cause subsurface deformation sufficient to result in well failure. Time-dependent reservoir pressure fields that were calculated from three-dimensional black oil reservoir simulations were coupled uni-directionally to three-dimensional non-linear finite element geomechanical simulations. The reservoir models included nearly 100,000 gridblocks (100--200 wells), and covered nearly 20 years of production and injection. The geomechanical models were meshed from structure maps and contained more than 300,000 nodal points. Shear strain localization along weak bedding planes that causes casing dog-legs in the field was accommodated in the model by contact surfaces located immediately above the reservoir and at two locations in the overburden. The geomechanical simulations are validated by comparison of the predicted surface subsidence with field measurements, and by comparison of predicted deformation with observed casing damage. Additionally, simulations performed for two independently developed areas at South Belridge, Sections 33 and 29, corroborate their different well failure histories. The simulations suggest the three types of casing damage observed, and show that although water injection has mitigated surface subsidence, it can, under some circumstances, increase the lateral gradients in effective stress, that in turn can accelerate subsurface horizontal motions. Geomechanical simulation is an important reservoir management tool that can be used to identify optimal operating policies to mitigate casing damage for existing field developments, and applied to incorporate the effect of

  9. A new feature in the internal heavy isotope distribution in ozone

    SciTech Connect

    Bhattacharya, S. K. Liang, Mao-Chang; Savarino, Joel; Michalski, G.

    2014-10-07

    Ozone produced by discharge or photolysis of oxygen has unusually heavy isotopic composition ({sup 18}O/{sup 16}O and {sup 17}O/{sup 16}O ratio) which does not follow normal mass fractionation rule: δ{sup 17}O ∼ 0.52{sup *}δ{sup 18}O, expressed as an anomaly Δ{sup 17}O = δ{sup 17}O − 0.52{sup *}δ{sup 18}O. Ozone molecule being an open isosceles triangle can have the heavy isotope located either in its apex or symmetric (s) position or the base or asymmetric (as) position. Correspondingly, one can define positional isotopic enrichment, written as δ{sup 18}O (s) or δ{sup 18}O (as) (and similarly for δ{sup 17}O) as well as position dependent isotope anomaly Δ{sup 17}O (s) and Δ{sup 17}O (as). Marcus and co-workers have proposed a semi-empirical model based in principle on the RRKM model of uni-molecular dissociation but with slight modification (departure from statistical randomness assumption for symmetrical molecules) which explains many features of ozone isotopic enrichment. This model predicts that the bulk isotope anomaly is contained wholly in the asymmetric position and the Δ{sup 17}O (s) is zero. Consequently, Δ{sup 17}O (as) = 1.5 {sup *} Δ{sup 17}O (bulk) (named here simply as the “1.5 rule”) which has been experimentally confirmed over a range of isotopic enrichment. We now show that a critical re-analysis of the earlier experimental data demonstrates a small but significant departure from this 1.5 rule at the highest and lowest levels of enrichments. This departure provides the first experimental proof that the dynamics of ozone formation differs from a statistical model constrained only by restriction of symmetry. We speculate over some possible causes for the departure.

  10. Glass Strengthening via High-Intensity Plasma-Arc Heating

    SciTech Connect

    Wereszczak, Andrew A; Harper, David C; Duty, Chad E; Patel, P

    2010-01-01

    The use of a high-intensity plasma-arc lamp was used to irradiate the surface of soda-lime silicate glass tiles to determine if an increase in strength could be achieved. The lamp had a power density of 3500 W/cm2, a processing area of 1 cm x 10 cm, irradiated near-infrared heating at a wavelength between 0.2 1.4 m, and was controlled to unidirectionally sweep across 50-mm-square tiles at a constant speed of 8 mm/s. Ring-on-ring (RoR) equibiaxial flexure and 4 pt uni-directional flexure testings of entire tiles were used to measure and compare failure stress distributions of treated and untreated glass. Even with non-optimized processing conditions, RoR failure stress increased by approximately 25% and the 4 pt bend failure stress increased by approximately 65%. Strengthening was due to a fire-polishing-like mechanism. The arc-lamp heat-treatment caused the location of the strength-limiting flaws in the 4-pt-bend tiles to change; namely, failure initiation occurred on the gage section surface for the treated glass whereas it occurred at a gage section edge for the untreated. Arc-lamp heat-treatment is attractive not only because it provides strengthening, but because it can (non-contact) process large amounts of glass quickly and inexpensively, and is a process that either a glass manufacturer or end-user can readily employ.

  11. SIMULATION AND MOCKUP OF SNS JET-FLOW TARGET WITH WALL JET FOR CAVITATION DAMAGE MITIGATION

    SciTech Connect

    Wendel, Mark W; Geoghegan, Patrick J; Felde, David K

    2014-01-01

    Pressure waves created in liquid mercury pulsed spallation targets at the Spallation Neutron Source (SNS) at Oak Ridge National Laboratory induce cavitation damage on the stainless steel target container. The cavitation damage is thought to limit the lifetime of the target for power levels at and above 1 MW. Severe through-wall cavitation damage on an internal wall near the beam entrance window has been observed in spent-targets. Surprisingly though, there is very little damage on the walls that bound an annular mercury channel that wraps around the front and outside of the target. The mercury flow through this channel is characterized by smooth, attached streamlines. One theory to explain this lack of damage is that the uni-directional flow biases the direction of the collapsing cavitation bubble, reducing the impact pressure and subsequent damage. The theory has been reinforced by in-beam separate effects data. For this reason, a second-generation SNS mercury target has been designed with an internal wall jet configuration intended to protect the concave wall where damage has been observed. The wall jet mimics the annular flow channel streamlines, but since the jet is bounded on only one side, the momentum is gradually diffused by the bulk flow interactions as it progresses around the cicular path of the target nose. Numerical simulations of the flow through this jet-flow target have been completed, and a water loop has been assembled with a transparent test target in order to visualize and measure the flow field. This paper presents the wall jet simulation results, as well as early experimental data from the test loop.

  12. Analysis of Improved Reference Design for a Nuclear-Driven High Temperature Electrolysis Hydrogen Production Plant

    SciTech Connect

    Edwin A. Harvego; James E. O'Brien; Michael G. McKellar

    2010-06-01

    The use of High Temperature Electrolysis (HTE) for the efficient production of hydrogen without the greenhouse gas emissions associated with conventional fossil-fuel hydrogen production techniques has been under investigation at the Idaho National Engineering Laboratory (INL) for the last several years. The activities at the INL have included the development, testing and analysis of large numbers of solid oxide electrolysis cells, and the analyses of potential plant designs for large scale production of hydrogen using an advanced Very-High Temperature Reactor (VHTR) to provide the process heat and electricity to drive the electrolysis process. The results of these system analyses, using the UniSim process analysis software, have shown that the HTE process, when coupled to a VHTR capable of operating at reactor outlet temperatures of 800 °C to 950 °C, has the potential to produce the large quantities of hydrogen needed to meet future energy and transportation needs with hydrogen production efficiencies in excess of 50%. In addition, economic analyses performed on the INL reference plant design, optimized to maximize the hydrogen production rate for a 600 MWt VHTR, have shown that a large nuclear-driven HTE hydrogen production plant can to be economically competitive with conventional hydrogen production processes, particularly when the penalties associated with greenhouse gas emissions are considered. The results of this research led to the selection in 2009 of HTE as the preferred concept in the U.S. Department of Energy (DOE) hydrogen technology down-selection process. However, the down-selection process, along with continued technical assessments at the INL, has resulted in a number of proposed modifications and refinements to improve the original INL reference HTE design. These modifications include changes in plant configuration, operating conditions and individual component designs. This paper describes the resulting new INL reference design and presents

  13. Microstructure of selective laser melted nickel–titanium

    SciTech Connect

    Bormann, Therese; Müller, Bert; Kessler, Anja; Thalmann, Peter

    2014-08-15

    In selective laser melting, the layer-wise local melting of metallic powder by means of a scanning focused laser beam leads to anisotropic microstructures, which reflect the pathway of the laser beam. We studied the impact of laser power, scanning speed, and laser path onto the microstructure of NiTi cylinders. Here, we varied the laser power from 56 to 100 W and the scanning speed from about 100 to 300 mm/s. In increasing the laser power, the grain width and length increased from (33 ± 7) to (90 ± 15) μm and from (60 ± 20) to (600 ± 200) μm, respectively. Also, the grain size distribution changed from uni- to bimodal. Ostwald-ripening of the crystallites explains the distinct bimodal size distributions. Decreasing the scanning speed did not alter the microstructure but led to increased phase transformation temperatures of up to 40 K. This was experimentally determined using differential scanning calorimetry and explained as a result of preferential nickel evaporation during the fabrication process. During selective laser melting of the NiTi shape memory alloy, the control of scanning speed allows restricted changes of the transformation temperatures, whereas controlling the laser power and scanning path enables us to tailor the microstructure, i.e. the crystallite shapes and arrangement, the extent of the preferred crystallographic orientation and the grain size distribution. - Highlights: • Higher laser powers during selective laser melting of NiTi lead to larger grains. • Selective laser melting of NiTi gives rise to preferred <111> orientation. • The observed Ni/Ti ratio depends on the exposure time. • Ostwald ripening explains the bimodal grain size distribution.

  14. Graybox and adaptative dynamic neural network identification models to infer the steady state efficiency of solar thermal collectors starting from the transient condition

    SciTech Connect

    Roberto, Baccoli; Ubaldo, Carlini; Stefano, Mariotti; Roberto, Innamorati; Elisa, Solinas; Paolo, Mura

    2010-06-15

    This paper deals with the development of methods for non steady state test of solar thermal collectors. Our goal is to infer performances in steady-state conditions in terms of the efficiency curve when measures in transient conditions are the only ones available. We take into consideration the method of identification of a system in dynamic conditions by applying a Graybox Identification Model and a Dynamic Adaptative Linear Neural Network (ALNN) model. The study targets the solar collector with evacuated pipes, such as Dewar pipes. The mathematical description that supervises the functioning of the solar collector in transient conditions is developed using the equation of the energy balance, with the aim of determining the order and architecture of the two models. The input and output vectors of the two models are constructed, considering the measures of 4 days of solar radiation, flow mass, environment and heat-transfer fluid temperature in the inlet and outlet from the thermal solar collector. The efficiency curves derived from the two models are detected in correspondence to the test and validation points. The two synthetic simulated efficiency curves are compared with the actual efficiency curve certified by the Swiss Institute Solartechnik Puffung Forschung which tested the solar collector performance in steady-state conditions according to the UNI-EN 12975 standard. An acquisition set of measurements of only 4 days in the transient condition was enough to trace through a Graybox State Space Model the efficiency curve of the tested solar thermal collector, with a relative error of synthetic values with respect to efficiency certified by SPF, lower than 0.5%, while with the ALNN model the error is lower than 2.2% with respect to certified one. (author)

  15. Probing Neutrino Properties with Long-Baseline Neutrino Beams

    SciTech Connect

    Marino, Alysia

    2015-06-29

    This is nal report on an Early Career Award grant began in April 15, 2010 and concluded on April 14, 2015. Alysia Marino's research is fo- cussed on making precise measurements of neutrino properties using in- tense accelerator-generated neutrino beams. As a part of this grant, she is collaborating on the Tokai-to-Kamioka (T2K) long-baseline neutrino exper- iment [6], currently taking data in Japan, and on the Deep Underground Neutrino Experiment (DUNE) design e ort for a future Long-Baseline Neu- trino Facility (LBNF) in the US.1 She is also a member of the NA61/SHINE particle production experiment at CERN, but as that e ort is supported by other funds, it will not be discussed further here. T2K was designed to search for the disappearance of muon neutrinos ( ) and the appearance of electron neutrinos ( e), using a beam of muon neu- trino beam that travels 295 km across Japan towards the Super-Kamiokande detector. In 2011 T2K rst reported indications of e appearance [2], a pre- viously unobserved mode of neutrino oscillations. In the past year, T2K has published a combined analysis of disappearance and e appearance [1], and began collecting taking data with a beam of anti-neutrinos, instead of neutrinos, to search for hints of violation of the CP symmetry of the uni- verse. The proposed DUNE experiment has similar physics goals to T2K, but will be much more sensitive due to its more massive detectors and new higher-intensity neutrino beam. This e ort will be very high-priority particle physics project in the US over the next decade.

  16. In situ formation of sintered cordieritemullite nanomicro composites by utilizing of waste silica fume

    SciTech Connect

    Khattab, R.M.; EL-Rafei, A.M.; Zawrah, M.F.

    2012-09-15

    Highlights: ? We succeeded to obtain in situ formed sintered cordieritemullite nanomacro composites from waste and pure materials at 1400 C. ? Their sinterability was greatly dependent on both firing temperature and composition. ? XRD patterns showed that the optimum temperature required for formation of sintered cordieritemullite nanomacro composites was achieved at 1400 C. ? The batch containing 70 wt.% cordierite and 30 wt.% mullite exhibited the best properties. ? Microstructures of the densified composites were composed of nanomacro cordieritemullite structures. -- Abstract: This study aims at in situ formation of sintered cordieritemullite nanomacro composites having high technological properties using waste silica fume, calcined ball clay, calcined alumina, and magnesia as starting materials. The starting materials were mixed in different ratios to obtain different cordieritemullite composite batches in which the cordierite contents ranged from 50 to 100 wt.%. The batches were uni-axially pressed at 100 MPa and sintered at 1350, 1400 and 1450 C to select the optimum temperature required for cordieritemullite nanomacro composites formation. The formed phases were identified by X-ray diffraction (XRD) pattern. The sintering parameters in terms of bulk density (BD) and apparent porosity (AP) were determined. The microstructure of composites has been investigated by scanning electron microscope (SEM). Cold crushing strength (CCS) of the sintered batches was evaluated. The result revealed that the cordieritemullite nanomacro composites were in-situ formed at 1400 C. The batch containing 70 wt.% cordierite showed good physical and mechanical properties.

  17. Report of Separate Effects Testing for Modeling of Metallic Fuel Casting Process

    SciTech Connect

    Crapps, Justin M.; Galloway, Jack D.; Decroix, David S.; Korzekwa, David A.; Aikin, Robert M. Jr.; Unal, Cetin; Fielding, R.; Kennedy, R

    2012-06-29

    parameters should be measured to achieve better simulation fidelity. Information on all the mentioned parameters is virtually nonexistent. Presently, all the parameters within the casting model are estimates based on pure U, or another alloy such as U-Ni.

  18. PERFORMANCE EVALUATION OF A SUSTAINABLE AND ENERGY EFFICIENT RE-ROOFING TECHNOLOGY USING FIELD-TEST DATA

    SciTech Connect

    Biswas, Kaushik; Miller, William A; Childs, Phillip W; Kosny, Jan; Kriner, Scott

    2011-01-01

    thermal stresses due to the PV laminates on sunny days. In PV laminates sunlight is converted into electricity and heat simultaneous. In case of building integrated applications, a relatively high solar absorption of amorphous silicon laminates can be utilized during the winter for solar heating purposes with PCM providing necessary heat storage capacity. However, PV laminates may also generate increased building cooling loads during the summer months. Therefore, in this project, the PCM heat sink was to minimize summer heat gains as well. The PCM-fibreglass-PV assembly and the IRR metal panels are capable of being installed directly on top of existing shingle roofs during re-roofing, precluding the need for recycling or disposal of waste materials. The PV laminates installed on the PCM attic are PVL-144 models from Uni-Solar. Each laminate contains 22 triple junction amorphous silicon solar cells connected in series. The silicon cells are of dimensions 356 mm x 239 mm (14-in. x 9.4-in.). The PVL-144 laminate is encapsulated in durable ETFE (poly-ethylene-co-tetrafluoroethylene) high light-transmissive polymer. Table 1 lists the power, voltage and current ratings of the PVL-144 panel.