Sample records for ur ag io

  1. CVA-UR

    Energy Science and Technology Software Center (OSTI)

    002388MLTPL00 Interface for Parallel I/O from Componentized Visualization Algorithms http://www.vtk.org

  2. URS Consent Order

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

    Manager Department of Energy Washington, DC 20585 October 13, 2011 URS Energy & Construction, Inc. Global Management and Operations Services 106 Newberry Street SW Aiken, South...

  3. Storage and IO Technology

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

    Burst Buffer User Defined Images Archive Home R & D Storage and IO Technologies Storage and IO Technologies Burst Buffer NVRAM and Burst Buffer Use Cases In collaboration...

  4. Internship opportunity with URS Corporation

    E-Print Network [OSTI]

    Internship opportunity with URS Corporation URS is the largest global engineering design firm of undergraduate studies to participate in an internship program with the School of Ocean & Earth Science & Technology (SOEST) at the University of Hawaii. The intent of the internship is two-fold: · To establish

  5. I/O Test

    E-Print Network [OSTI]

    Beeler, Michael

    1967-10-01T23:59:59.000Z

    IO TEST is intended as a hardware testing and debugging aid for use with the PDP-6 and its associated input multiplexer (analog to digital converter) and output multiplexer (digital to analog converter). While all characters ...

  6. TECHNISCHE UNIVERSIT UR INFORMATIK

    E-Print Network [OSTI]

    Cengarle, María Victoria

    ­ pension system and has been proposed by BMW AG as a case study taken from a current industrial development . . . . . . . . . . . . . . . . . . . . 40 4.2.3 The Controller of Valves and Compressor . . . . . . . . . 41 5 The Environment and System Abstractions 46 5.1 Modeling the Environment . . . . . . . . . . . . . . . . . . . . . 46 5.1.1 A Simple Model

  7. I/O Library List

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

    IO Library List IO Library List Package Platform Version Module Install Date Date Made Default ADIOS plain edison 1.4.1 adiosplain1.4.1 2013-01-22 2013-01-22 boost babbage...

  8. Praxis I/O package

    SciTech Connect (OSTI)

    Holloway, F.W.; Sherman, T.A.

    1988-04-07T23:59:59.000Z

    The Praxis language specification, like Algol and Ada, does not specify any I/O statements. The intent was to provide a standard I/O package as a companion to the compiler. This would allow the user to substitute, or supplement, the I/O package, as needed, for specialized applications. Like Algol, however, Praxis provided only limited (text) I/O for several years. Ada, in contrast, provided a comprehensive standard I/O package from its inception. Digital Equipment Corporation's (DEC's) implementation of Ada, on their VAX family of computers, further supplemented this package with other packages which exploit the I/O facilities available under the VMS operating system. The Praxis I/O package described in this document has been modeled after DEC's implementation of Ada and provides a similar set of I/O facilities. Currently, the I/O package is supported only under VAX/VMS. The design of the package, however, is essentially independent of any operating system (with the exception of the module COMMAND IO). The VAX/VMS version of the I/O package fully exploits the vast I/O facilities which are provided under VAX/VMS and makes them directly available to the Praxis programmer. The design, prototype implementation, and draft documentation of the Praxis I/O Package was done by Tim Sherman as part of a University project in computer science. Subsequent work by both Tim and Fred Holloway lead to a more complete implementation, testing and development of example programs, and inclusion of the package into the Praxis compilers as their principal interface to RMS and VMS.

  9. Cray IO COE

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power Administration would likeConstitution4 Department of Energy CarlsbadWinter Cray BugIO COE

  10. IO Performance of a ClimateIO Performance of a Climate Modeling ApplicationModeling Application

    E-Print Network [OSTI]

    - filling curve 6Figures from Bruce Palmer & Karen Schuchardt (PNNL) / Charlotte DeMott (CSU) #12) #12;Tuning the IO patternTuning the IO pattern 10 Baseline from PNNL Katie Antypas reconfigures MPI (MPIPerformance issues (MPI--IO)IO) MPI-IO synchronous issue affects pNetCDF and GCRM API Introduced PNNL group

  11. UR Earth and Environmental Sciences Program Learning Objectives and Assessment Plan UR Undergraduate BS Earth and Environmental Sciences Program

    E-Print Network [OSTI]

    Cantlon, Jessica F.

    UR Earth and Environmental Sciences Program Learning Objectives and Assessment Plan UR Undergraduate BS Earth and Environmental Sciences Program Learning Objectives and Assessment Plan Students will as their physical, chemical, and biological characteristics. #12;UR Earth and Environmental Sciences Program

  12. I/O Resources for Scientific Applications

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

    Resources for Scientific Applications at NERSC IO Resources for Scientific Applications at NERSC Introduction NERSC provides a range of online resources to assist users...

  13. Trilinos I/O Support (Trios)

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

    Oldfield, Ron A.; Sjaardema, Gregory D.; Lofstead II, Gerald F.; Kordenbrock, Todd

    2012-01-01T23:59:59.000Z

    Trilinos I/O Support (Trios) is a new capability area in Trilinos that serves two important roles: (1) it provides and supports I/O libraries used by in-production scientific codes; (2) it provides a research vehicle for the evaluation and distribution of new techniques to improve I/O on advanced platforms. This paper provides a brief overview of the production-grade I/O libraries in Trios as well as some of the ongoing research efforts that contribute to the experimental libraries in Trios.

  14. I/O Library List

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC) EnvironmentalGyroSolé(tm)Hydrogen Storage inChang Curriculum Vitae' NetCDF ROOT I/O

  15. Max-Planck-Institut f ur Mathematik

    E-Print Network [OSTI]

    by the equations: (1.1) (# t +D)u = 0, u(x; 0) = #, and Bu = 0. The specific heat # is a section to the dual bundle V # . Let #(#, #, D, B)(t) := # M u# be the total heat energy content. As t # 0, there is a completeMax-Planck-Institut f? ur Mathematik in den Naturwissenschaften Leipzig Heat content asymptotics

  16. Scaling Parallel I/O Performance through I/O Delegate and Caching System

    E-Print Network [OSTI]

    Kuzmanovic, Aleksandar

    Scaling Parallel I/O Performance through I/O Delegate and Caching System Arifa Nisar, Wei-keng Liao performance. Such applications periodically offload checkpointing data to file system for post't allow overall performance to scale with increasing number of processors. To bridge the gap between

  17. -0STATE OF CALIFORNIA DATEB-IO-\\\\

    E-Print Network [OSTI]

    DEVELOPMENT COMMISSION In the Matter of: ) ) ENERGY COMMISSION ORDER ) ) Order No. 11-0810-3 Energy related to the Energy Commission's role in assisting local governments with energy-related land useDOCKET -0STATE OF CALIFORNIA DATEB-IO-\\\\ STATE ENERGY RESOURCES CONSERVATIO REeD. 9-\\\\-,\\AND

  18. Poster Title LA-UR Number Author(s) Thumbnail

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

    Water Individual Permit Posters 1 December 4, 2013 Poster Title LA-UR Number Author(s) Thumbnail Contributions of Nitrite-Nitrogen, Nitrate-Nitrogen, and Orthophosphate Levels in...

  19. Intern experience at URS Company: an internship report

    E-Print Network [OSTI]

    Elkarmi, Fawwaz, 1950-

    2013-03-13T23:59:59.000Z

    This report describes the author's internship experience with URS Company - Dallas, Texas, from May 1980 to May 1981. The internship company is a consulting engineering firm engaged in providing professional services...

  20. UR Transition is a pre-orientation program designed for incoming freshmen students with a documented disability. Acceptance in the UR Transition is limited to a small cohort of students in this program pilot. CETL

    E-Print Network [OSTI]

    Cantlon, Jessica F.

    UR Transition is a pre-orientation program designed for incoming freshmen students with a documented disability. Acceptance in the UR Transition. Personal statement of interest in UR Transition: (Share what you hope to gain

  1. UR Transition is a pre-orientation program designed for incoming freshmen students with a documented disability. Acceptance in the UR Transition is limited to a small cohort of students in this program pilot. CETL

    E-Print Network [OSTI]

    Mahon, Bradford Z.

    UR Transition is a pre-orientation program designed for incoming freshmen students with a documented disability. Acceptance in the UR Transition is limited advised, no programming for siblings is available during UR Transition) Personal

  2. I/O Libraries at NERSC

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC) EnvironmentalGyroSolé(tm)Hydrogen Storage inChang Curriculum Vitae' NetCDF ROOT I/O

  3. (UR-16) Integrated Framework for Lifecycle Infrastructure Management Systems

    E-Print Network [OSTI]

    Hammad, Amin

    1 (UR-16) Integrated Framework for Lifecycle Infrastructure Management Systems Cheng Zhang1 Elaheh throughout the lifecycle of an infrastructure system, such as a bridge, including construction, inspection only limited support for representing and visualizing this information. Using a 4D product model

  4. Adding Parallel I/O to PARA-BMU

    E-Print Network [OSTI]

    Johnson, Nick; Bethune, Iain

    2012-10-01T23:59:59.000Z

    VOX-FE is a voxel-based bone modelling suite. The solver part of the suite - PARA-BMU - currently uses only serial I/O routines which lead to poor scalability. We enhance the code by adding parallel I/O routines based on the netCDF and HDF5...

  5. Remote I/O : fast access to distant storage.

    SciTech Connect (OSTI)

    Foster, I.; Kohr, D., Jr.; Krishnaiyer, R.; Mogill, J.

    1997-12-17T23:59:59.000Z

    As high-speed networks make it easier to use distributed resources, it becomes increasingly common that applications and their data are not colocated. Users have traditionally addressed this problem by manually staging data to and from remote computers. We argue instead for a new remote I/O paradigm in which programs use familiar parallel I/O interfaces to access remote file systems. In addition to simplifying remote execution, remote I/O can improve performance relative to staging by overlapping computation and data transfer or by reducing communication requirements. However, remote I/O also introduces new technical challenges in the areas of portability, performance, and integration with distributed computing systems. We propose techniques designed to address these challenges and describe a remote I/O library called RIO that we have developed to evaluate the effectiveness of these techniques. RIO addresses issues of portability by adopting the quasi-standard MPI-IO interface and by defining a RIO device and RIO server within the ADIO abstract I/O device architecture. It addresses performance issues by providing traditional I/O optimizations such as asynchronous operations and through implementation techniques such as buffering and message forwarding to off load communication overheads. RIO uses the Nexus communication library to obtain access to configuration and security mechanisms provided by the Globus wide area computing tool kit. Microbenchmarks and application experiments demonstrate that our techniques achieve acceptable performance in most situations and can improve turnaround time relative to staging.

  6. CAN-Ethernet gateway (IoT) (IPsec)

    E-Print Network [OSTI]

    Jang, Ju-Wook

    (IoT) IPv6 Network IoT(interoperability) CAN LTE3G Home network RFID Industry network Metro , device IPv4 #12; Smart device IPv6 IPv6 network (Access Address Identifier(AAID) ) AAID gateway AAID IPv6 mapping (hash AAID-IPv6 ) #12; industrial markets building automation market (CAN

  7. Parallel I/O Software Infrastructure for Large-Scale Systems

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

    Parallel IO Software Infrastructure for Large-Scale Systems Parallel IO Software Infrastructure for Large-Scale Systems | Tags: Math & Computer Science Choudhary.png An...

  8. An Optimizing Compiler for Petascale I/O on Leadership Class...

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

    Petascale IO on Leadership Class Architectures Re-direct Destination: In high-performance computing systems, parallel IO architectures usually have very complex hierarchies...

  9. Optimally Robust Kalman Filtering at Work: AO-, IO-, and Simultaneously IO-and AO-Robust Filters

    E-Print Network [OSTI]

    Ruckdeschel, Peter

    Optimally Robust Kalman Filtering at Work: AO-, IO-, and Simultaneously IO- and AO- Robust Filters Abstract We take up optimality results for robust Kalman filtering from Ruckdeschel (2001, 2010) where. (2006), Fried et al. (2007). Keywords: robustness, Kalman Filter, innovation outlier, additive outlier

  10. AGS experiments -- 1995, 1996 and 1997

    SciTech Connect (OSTI)

    Depken, J.C.; Presti, P.L.

    1997-12-01T23:59:59.000Z

    This report contains (1) FY 1995 AGS schedule as run; (2) FY 1996 AGS schedule as run; (3) FY 1997 AGS schedule as run; (4) FY 1998--1999 AGS schedule (proposed); (5) AGS beams 1997; (6) AGS experimental area FY 1995 physics program; (7) AGS experimental area FY 1996 physics program; (8) AGS experimental area FY 1997 physics program; (9) AGS experimental area FY 1998--1999 physics program (proposed); (10) a listing of experiments by number; (11) two-page summaries of each experiment, in order by number; and (12) listing of publications of AGS experiments.

  11. AGS experiments -- 1991, 1992, 1993. Tenth edition

    SciTech Connect (OSTI)

    Depken, J.C.

    1994-04-01T23:59:59.000Z

    This report contains: (1) FY 1993 AGS schedule as run; (2) FY 1994--95 AGS schedule; (3) AGS experiments {ge} FY 1993 (as of 30 March 1994); (4) AGS beams 1993; (5) AGS experimental area FY 1991 physics program; (6) AGS experimental area FY 1992 physics program; (7) AGS experimental area FY 1993 physics program; (8) AGS experimental area FY 1994 physics program (planned); (9) a listing of experiments by number; (10) two-page summaries of each experiment; (11) listing of publications of AGS experiments; and (12) listing of AGS experiments.

  12. I/O Performance of Virtualized Cloud Environments

    SciTech Connect (OSTI)

    Ghoshal, Devarshi; Canon, Shane; Ramakrishnan, Lavanya

    2011-11-03T23:59:59.000Z

    The scientific community is exploring the suitability of cloud infrastructure to handle High Performance Computing (HPC) applications. The goal of Magellan, a project funded through DOE ASCR, is to investigate the potential role of cloud computing to address the computing needs of the Department of Energy?s Office of Science, especially for mid-range computing and data-intensive applications which are not served through existing DOE centers today. Prior work has shown that applications with significant communication orI/O tend to perform poorly in virtualized cloud environments. However, there is a limited understanding of the I/O characteristics in virtualized cloud environments. This paper will present our results in benchmarking the I/O performance over different cloud and HPC platforms to identify the major bottlenecks in existing infrastructure. We compare the I/O performance using IOR benchmark on two cloud platforms - Amazon and Magellan. We analyze the performance of different storage options available, different instance types in multiple availability zones. Finally, we perform large-scale tests in order to analyze the variability in the I/O patterns over time and region. Our results highlight the overhead and variability in I/O performance on both public and private cloud solutions. Our results will help applications decide between the different storage options enabling applications to make effective choices.

  13. Atomic oxygen flux determined by mixed-phase Ag/Ag2O deposition...

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

    oxygen flux determined by mixed-phase AgAg2O deposition. Atomic oxygen flux determined by mixed-phase AgAg2O deposition. Abstract: The flux of atomic oxygen generated in a...

  14. U-165: Apple iOS Bugs Let Remote Users Execute Arbitrary Code...

    Office of Environmental Management (EM)

    5: Apple iOS Bugs Let Remote Users Execute Arbitrary Code and Spoof Address Bar URLs U-165: Apple iOS Bugs Let Remote Users Execute Arbitrary Code and Spoof Address Bar URLs May 9,...

  15. U-121: Apple iOS Bugs Let Remote Users Execute Arbitrary Code...

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

    21: Apple iOS Bugs Let Remote Users Execute Arbitrary Code, Conduct Cross-Site Scripting Attacks, and Obtain Potentially Sensitive Information U-121: Apple iOS Bugs Let Remote...

  16. AgFoodTradeAgFoodTrade New Issues in Agricultural,New Issues in Agricultural,

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    AgFoodTradeAgFoodTrade New Issues in Agricultural,New Issues in Agricultural, Food & Bioenergy TradeFood & Bioenergy Trade AgFoodTradeAgFoodTrade New Issues in Agricultural,New Issues in Agricultural, Food & Bioenergy TradeFood & Bioenergy Trade AgFoodTradeAgFoodTrade New Issues in Agricultural

  17. Evaluating Memory Energy Efficiency in Parallel I/O Workloads

    E-Print Network [OSTI]

    Zhu, Yifeng

    Evaluating Memory Energy Efficiency in Parallel I/O Workloads Jianhui Yue,Yifeng Zhu , Zhao Cai the ever- widening gap between disk and processor speeds, memory energy efficiency becomes an increasingly management policies heavily influence the overall memory energy efficiency. In partic- ular, under the same

  18. I High-Performance I/O for Massively Parallel

    E-Print Network [OSTI]

    Kuzmanovic, Aleksandar

    -100 files/run. 20-200 MBps. l-10 Gbytes. HiPPl bandwidths minimum. 1 Tbyte. Secondary I/O bandwidth disk, 50-100 MBps disk to 3-inch storage (comparable to HiPPl/Ultra). 1 Tbyte. 0.5 GBps to disk, 45

  19. import java.io.IOException; import java.net.URI;

    E-Print Network [OSTI]

    Ricci, Laura

    import java.io.IOException; import java.net.URI; import java.util.Enumeration; import net.jxta.discovery.DiscoveryService; import net.jxta.document.AdvertisementFactory; import net.jxta.document.Element; import net.jxta.document.MimeMediaType; import net.jxta.document.StructuredDocument; import net.jxta.document.StructuredDocumentFactory; import

  20. T-676: Apple iOS Certificate Chain Validation Flaw Lets Certain...

    Energy Savers [EERE]

    or modify SSLTLS sessions. PLATFORM: iOS 4.2.5 through 4.2.9 for iPhone 4 (CDMA) iOS 3.0 through 4.3.4 for iPhone 3GS and iPhone 4 (GSM) iOS 3.1 through 4.3.4 for iPod touch...

  1. Enforcing I/O sequences for PLC validation purposes Anais Guignard

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Enforcing I/O sequences for PLC validation purposes Anais Guignard Automated Production Research Validation of the behavior of a Programmable Logic Controller (PLC) by comparison of observed I/O se- quences to sequences built from a formal specification model requires that the consequences of the PLC I/O scan- ning

  2. Advanced I/O for large-scale scientific applications.

    SciTech Connect (OSTI)

    Klasky, Scott (Oak Ridge National Laboratory, Oak Ridge, TN); Schwan, Karsten (Georgia Institute of Technology, Atlanta, GA); Oldfield, Ron A.; Lofstead, Gerald F., II (Georgia Institute of Technology, Atlanta, GA)

    2010-01-01T23:59:59.000Z

    As scientific simulations scale to use petascale machines and beyond, the data volumes generated pose a dual problem. First, with increasing machine sizes, the careful tuning of IO routines becomes more and more important to keep the time spent in IO acceptable. It is not uncommon, for instance, to have 20% of an application's runtime spent performing IO in a 'tuned' system. Careful management of the IO routines can move that to 5% or even less in some cases. Second, the data volumes are so large, on the order of 10s to 100s of TB, that trying to discover the scientifically valid contributions requires assistance at runtime to both organize and annotate the data. Waiting for offline processing is not feasible due both to the impact on the IO system and the time required. To reduce this load and improve the ability of scientists to use the large amounts of data being produced, new techniques for data management are required. First, there is a need for techniques for efficient movement of data from the compute space to storage. These techniques should understand the underlying system infrastructure and adapt to changing system conditions. Technologies include aggregation networks, data staging nodes for a closer parity to the IO subsystem, and autonomic IO routines that can detect system bottlenecks and choose different approaches, such as splitting the output into multiple targets, staggering output processes. Such methods must be end-to-end, meaning that even with properly managed asynchronous techniques, it is still essential to properly manage the later synchronous interaction with the storage system to maintain acceptable performance. Second, for the data being generated, annotations and other metadata must be incorporated to help the scientist understand output data for the simulation run as a whole, to select data and data features without concern for what files or other storage technologies were employed. All of these features should be attained while maintaining a simple deployment for the science code and eliminating the need for allocation of additional computational resources.

  3. Bewegungsgleichung f ur frequenzabh angige Green-Funktion: !hhA; Bii (ret=av)

    E-Print Network [OSTI]

    Potthoff, Michael

    der Kommutator/Antikommutator auf- tritt! Bewegungsgleichung f ur h ohere Green-Funktion: !hh[A; H Kette der Bewegungsgleichungen bricht al- so ab. Wegen des fehlenden Wechselwirkungs- terms tritt keine

  4. Technische Universit at ChemnitzZwickau DFGForschergruppe '' SPC`` \\Delta Fakult at f ur Mathematik

    E-Print Network [OSTI]

    Chemnitz, Technische Universität

    Technische Universit¨ at Chemnitz­Zwickau DFG­Forschergruppe '' SPC`` \\Delta Fakult¨ at f¨ ur) Preprint­Reihe der Chemnitzer DFG­Forschergruppe '' Scientific Parallel Computing`` SPC 94 12 Juni 1994 #12 Universit¨ at Chemnitz­Zwickau Fakult¨ at f¨ ur Mathematik DFG­Forschergruppe SPC Reichenhainer Stra?e 41

  5. Spin dynamics simulations at AGS

    SciTech Connect (OSTI)

    Huang, H.; MacKay, W.W.; Meot, F.; Roser, T.

    2010-05-23T23:59:59.000Z

    To preserve proton polarization through acceleration, it is important to have a correct model of the process. It has been known that with the insertion of the two helical partial Siberian snakes in the Alternating Gradient Synchrotron (AGS), the MAD model of AGS can not deal with a field map with offset orbit. The stepwise ray-tracing code Zgoubi provides a tool to represent the real electromagnetic fields in the modeling of the optics and spin dynamics for the AGS. Numerical experiments of resonance crossing, including spin dynamics in presence of the snakes and Q-jump, have been performed in AGS lattice models, using Zgoubi. This contribution reports on various results so obtained.

  6. OPAL: An Open-Source MPI-IO Library over Cray XT

    SciTech Connect (OSTI)

    Yu, Weikuan [ORNL; Vetter, Jeffrey S [ORNL; Canon, Richard Shane [ORNL

    2007-01-01T23:59:59.000Z

    Parallel IO over Cray XT is supported by a vendor-supplied MPI-IO package. This package contains a proprietary ADIO implementation built on top of the sysio library. While it is reasonable to maintain a stable code base for application scientists' convenience, it is also very important to the system developers and researchers to analyze and assess the effectiveness of parallel IO software, and accordingly, tune and optimize the MPI-IO implementation. A proprietary parallel IO code base relinquishes such flexibilities. On the other hand, a generic UFS-based MPI-IO implementation is typically used on many Linux-based platforms. We have developed an open-source MPI-IO package over Lustre, referred to as OPAL (OPportunistic and Adaptive MPI-IO Library over Lustre). OPAL provides a single source-code base for MPI-IO over Lustre on Cray XT and Linux platforms. Compared to Cray implementation, OPAL provides a number of good features, including arbitrary specification of striping patterns and Lustre-stripe aligned file domain partitioning. This paper presents the performance comparisons between OPAL and Cray's proprietary implementation. Our evaluation demonstrates that OPAL achieves the performance comparable to the Cray implementation. We also exemplify the benefits of an open source package in revealing the underpinning of the parallel IO performance.

  7. VisIO: enabling interactive visualization of ultra-scale, time-series data via high-bandwidth distributed I/O systems

    SciTech Connect (OSTI)

    Mitchell, Christopher J [Los Alamos National Laboratory; Ahrens, James P [Los Alamos National Laboratory; Wang, Jun [UCF

    2010-10-15T23:59:59.000Z

    Petascale simulations compute at resolutions ranging into billions of cells and write terabytes of data for visualization and analysis. Interactive visuaUzation of this time series is a desired step before starting a new run. The I/O subsystem and associated network often are a significant impediment to interactive visualization of time-varying data; as they are not configured or provisioned to provide necessary I/O read rates. In this paper, we propose a new I/O library for visualization applications: VisIO. Visualization applications commonly use N-to-N reads within their parallel enabled readers which provides an incentive for a shared-nothing approach to I/O, similar to other data-intensive approaches such as Hadoop. However, unlike other data-intensive applications, visualization requires: (1) interactive performance for large data volumes, (2) compatibility with MPI and POSIX file system semantics for compatibility with existing infrastructure, and (3) use of existing file formats and their stipulated data partitioning rules. VisIO, provides a mechanism for using a non-POSIX distributed file system to provide linear scaling of 110 bandwidth. In addition, we introduce a novel scheduling algorithm that helps to co-locate visualization processes on nodes with the requested data. Testing using VisIO integrated into Para View was conducted using the Hadoop Distributed File System (HDFS) on TACC's Longhorn cluster. A representative dataset, VPIC, across 128 nodes showed a 64.4% read performance improvement compared to the provided Lustre installation. Also tested, was a dataset representing a global ocean salinity simulation that showed a 51.4% improvement in read performance over Lustre when using our VisIO system. VisIO, provides powerful high-performance I/O services to visualization applications, allowing for interactive performance with ultra-scale, time-series data.

  8. Scalable I/O Systems via Node-Local Storage: Approaching 1 TB/sec File I/O

    SciTech Connect (OSTI)

    Moody, A; Bronevetsky, G

    2008-05-20T23:59:59.000Z

    The growth in the computational capability of modern supercomputing systems has been accompanied by corresponding increases in CPU count, total RAM, and total storage capacity. Indeed, systems such as Blue-Gene/L [3], BlueGene/P, Ranger, and the Cray XT series have grown to more than 100k processors, with 100 TeraBytes of RAM and are attached to multi-PetaByte storage systems. However, as part of this design evolution, large supercomputers have lost node-local storage elements, such as disks. While this decision was motivated by important considerations like overall system reliability, it also resulted in these systems losing a key level in their memory hierarchy, with nothing to fill the gap between local RAM and the parallel file system. While today's large supercomputers are typically attached to fast parallel file systems, which provide tens of GBs/s of I/O bandwidth, the computational capacity has grown much faster than the storage bandwidth capacity. As such, these machines are now provided with much less than 1GB/s of I/O bandwidth per TeraFlop of compute power, which is below the generally accepted limit required for a well-balanced system [8] [16]. The result is that today's limited I/O bandwidth is choking the capabilities of modern supercomputers, specifically in terms of limiting their working sets and making fault tolerance techniques, such as checkpointing, prohibitively expensive. This paper presents an alternative system design oriented on using node-local storage to improve aggregate system I/O bandwidth. We focus on the checkpointing use-case and present an experimental evaluation of SCR, a new checkpointing library that makes use of node-local storage to significantly improve the performance of checkpointing on large-scale supercomputers. Experiments show that SCR achieves unprecedented write speeds, reaching 700GB/s on 8,752 processors. Our results scale such that we expect a similarly structured system consisting of 12,500 processors to achieve aggregate I/O bandwidth of 1 TB/s.

  9. vTurbo: Accelerating Virtual Machine I/O Processing Using Designated Turbo-Sliced Core

    E-Print Network [OSTI]

    Cong Xu; Sahan Gamage; Hui Lu; Ramana Kompella; Dongyan Xu

    In a virtual machine (VM) consolidation environment, it has been observed that CPU sharing among multiple VMs will lead to I/O processing latency because of the CPU access latency experienced by each VM. In this paper, we present vTurbo, a system that accelerates I/O processing for VMs by offloading I/O processing to a designated core. More specifically, the designated core called turbo core runs with a much smaller time slice (e.g., 0.1ms) than the cores shared by production VMs. Most of the I/O IRQs for the production VMs will be delegated to the turbo core for more timely processing, hence accelerating the I/O processing for the production VMs. Our experiments show that vTurbo significantly improves the VMs network and disk I/O throughput, which consequently translates into application-level performance improvement. 1

  10. ESnet Powers NRL's 100 Gbps Remote I/O Demo at SC14

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

    Powers NRL's 100 Gbps Remote IO Demo at SC14 News & Publications ESnet News Media & Press Publications and Presentations Galleries ESnet Awards and Honors Contact Us Media Jon...

  11. Umwelt Management AG UMaAG | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty Edit withTianlin BaxinUmwelt Management AG UMaAG Jump to: navigation, search Name:

  12. Ristma AG | Open Energy Information

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    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty Edit with form HistoryRistma AG Jump to: navigation, search Name: Ristma AG Place:

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    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are8COaBulkTransmissionSitingProcess.pdfGetec AG Contracting Jump to:Echo,GEFLakes,GoliadGordon, Alabama:Gorlitz AG

  14. Sunways AG | Open Energy Information

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    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty Edit with formSoutheastern ILSunseeker Energy Holding AG JumpSunways AG Jump to:

  15. Scalable I/O Systems via Node-Local Storage: Approaching 1 TB/sec File I/O

    SciTech Connect (OSTI)

    Bronevetsky, G; Moody, A

    2009-08-18T23:59:59.000Z

    In the race to PetaFLOP-speed supercomputing systems, the increase in computational capability has been accompanied by corresponding increases in CPU count, total RAM, and storage capacity. However, a proportional increase in storage bandwidth has lagged behind. In order to improve system reliability and to reduce maintenance effort for modern large-scale systems, system designers have opted to remove node-local storage from the compute nodes. Today's multi-TeraFLOP supercomputers are typically attached to parallel file systems that provide only tens of GBs/s of I/O bandwidth. As a result, such machines have access to much less than 1GB/s of I/O bandwidth per TeraFLOP of compute power, which is below the generally accepted limit required for a well-balanced system. In a many ways, the current I/O bottleneck limits the capabilities of modern supercomputers, specifically in terms of limiting their working sets and restricting fault tolerance techniques, which become critical on systems consisting of tens of thousands of components. This paper resolves the dilemma between high performance and high reliability by presenting an alternative system design which makes use of node-local storage to improve aggregate system I/O bandwidth. In this work, we focus on the checkpointing use-case and present an experimental evaluation of the Scalable Checkpoint/Restart (SCR) library, a new adaptive checkpointing library that uses node-local storage to significantly improve the checkpointing performance of large-scale supercomputers. Experiments show that SCR achieves unprecedented write speeds, reaching a measured 700GB/s of aggregate bandwidth on 8,752 processors and an estimated 1TB/s for a similarly structured machine of 12,500 processors. This corresponds to a speedup of over 70x compared to the bandwidth provided by the 10GB/s parallel file system the cluster uses. Further, SCR can adapt to an environment in which there is wide variation in performance or capacity among the individual node-local storage elements.

  16. I/O subnets for the APS control system

    SciTech Connect (OSTI)

    Arnold, N.D.; Nawrocki, G.J.; Daly, R.T.; Kraimer, M.R.; McDowell, W.P.

    1991-01-01T23:59:59.000Z

    Although the Advanced Photon Source Control System allows for microprocessor -- based Input/Output Controllers (IOCs) to be distributed throughout the facility, it is not always cost effective to provide such capability at every location where an interface to the Control System is required. I/O subnets implemented via message passing network protocols are used to interface points and/or equipment to a somewhat distant IOC, thereby reducing the number of required IOC's and minimizing the field wiring from the equipment to the Control System. For greatest flexibility, the subnets must support connections to equipment that requires several discrete I/O points, connections to GPIB and RS232 instruments, and a network connection to custom designed intelligent equipment. This paper describes an approach that supports all of the interfaces with one subnet implementation, BITBUS. In addition to accommodating several different interfaces on a single subnet, this approach also circumvents several limitations of GPIB and RS232 which would otherwise restrict their use in a harsh, industrial environment. 1 ref., 1 fig.

  17. Siemens AG 2009. All rights reserved. Investitionsmanagement

    E-Print Network [OSTI]

    Manstein, Dietmar J.

    Siemens AG 2009. All rights reserved. Investitionsmanagement Wie steuert man erfolgreich Investitionen? - Tools eines erfolgreichen, globalen Industrieunternehmens - Michael Sigmund CFO Siemens Investitionsplanung Berlin, 26. November, 2009 #12;Page 2 November 26, 2009 Copyright Siemens AG 2009. All rights

  18. Siemens AG 2009 Energy Sector

    E-Print Network [OSTI]

    Ulm, Universitt

    der Energieversorgung Intelligente Netze Smart Grid Karl-Josef Kuhn Siemens AG, Corporate Technology pressure on infrastructures Cities are responsible for around 75% of the world's energy consumption Cities directly or indirectly account for 60% of the world's water use An overloaded power grid caused a 3-day

  19. Design Techniques for Energy Efficient Multi-GB/S Serial I/O Transceivers

    E-Print Network [OSTI]

    Song, Younghoon

    2014-01-02T23:59:59.000Z

    Total I/O bandwidth demand is growing in high-performance systems due to the emergence of many-core microprocessors and in mobile devices to support the next generation of multi-media features. High-speed serial I/O energy ...

  20. DEPLETED MAGNETIC FLUX TUBES AS PROBES OF THE IO TORUS PLASMA

    E-Print Network [OSTI]

    Russell, Christopher T.

    and Astronomy, University of Iowa, Iowa City, IA 52242, USA ABSTRACT On the initial pass by Io the Galileo that they were depleted in their energy content. These tubes have not been seen on every return to the Io torus balance with neighboring flux tubes in steady state. Figure 1 shows such pressure balance. The magnitude

  1. An iOS Reader for People with Dyslexia NLP & Web Research Groups

    E-Print Network [OSTI]

    An iOS Reader for People with Dyslexia Luz Rello NLP & Web Research Groups Ricardo Baeza cally designed for people with dyslexia according to previous research with this target group, Human Factors Keywords Reading software, dyslexia, readability, Spanish iOS. 1. INTRODUCTION Around 10

  2. Design Techniques for Energy Efficient Multi-GB/S Serial I/O Transceivers

    E-Print Network [OSTI]

    Song, Younghoon

    2014-01-02T23:59:59.000Z

    Total I/O bandwidth demand is growing in high-performance systems due to the emergence of many-core microprocessors and in mobile devices to support the next generation of multi-media features. High-speed serial I/O energy efficiency must improve...

  3. An Optimizing Compiler for Petascale I/O on Leadership-Class Architectures

    SciTech Connect (OSTI)

    Kandemir, Mahmut Taylan [PSU; Choudary, Alok [Northwestern; Thakur, Rajeev [ANL

    2014-03-01T23:59:59.000Z

    In high-performance computing (HPC), parallel I/O architectures usually have very complex hierarchies with multiple layers that collectively constitute an I/O stack, including high-level I/O libraries such as PnetCDF and HDF5, I/O middleware such as MPI-IO, and parallel file systems such as PVFS and Lustre. Our DOE project explored automated instrumentation and compiler support for I/O intensive applications. Our project made significant progress towards understanding the complex I/O hierarchies of high-performance storage systems (including storage caches, HDDs, and SSDs), and designing and implementing state-of-the-art compiler/runtime system technology that targets I/O intensive HPC applications that target leadership class machine. This final report summarizes the major achievements of the project and also points out promising future directions Two new sections in this report compared to the previous report are IOGenie and SSD/NVM-specific optimizations.

  4. SCORPIO: A Scalable Two-Phase Parallel I/O Library With Application To A Large Scale Subsurface Simulator

    SciTech Connect (OSTI)

    Sreepathi, Sarat [ORNL] [ORNL; Sripathi, Vamsi [Intel Corporation] [Intel Corporation; Mills, Richard T [ORNL] [ORNL; Hammond, Glenn [Pacific Northwest National Laboratory (PNNL)] [Pacific Northwest National Laboratory (PNNL); Mahinthakumar, Kumar [North Carolina State University] [North Carolina State University

    2013-01-01T23:59:59.000Z

    Inefficient parallel I/O is known to be a major bottleneck among scientific applications employed on supercomputers as the number of processor cores grows into the thousands. Our prior experience indicated that parallel I/O libraries such as HDF5 that rely on MPI-IO do not scale well beyond 10K processor cores, especially on parallel file systems (like Lustre) with single point of resource contention. Our previous optimization efforts for a massively parallel multi-phase and multi-component subsurface simulator (PFLOTRAN) led to a two-phase I/O approach at the application level where a set of designated processes participate in the I/O process by splitting the I/O operation into a communication phase and a disk I/O phase. The designated I/O processes are created by splitting the MPI global communicator into multiple sub-communicators. The root process in each sub-communicator is responsible for performing the I/O operations for the entire group and then distributing the data to rest of the group. This approach resulted in over 25X speedup in HDF I/O read performance and 3X speedup in write performance for PFLOTRAN at over 100K processor cores on the ORNL Jaguar supercomputer. This research describes the design and development of a general purpose parallel I/O library, SCORPIO (SCalable block-ORiented Parallel I/O) that incorporates our optimized two-phase I/O approach. The library provides a simplified higher level abstraction to the user, sitting atop existing parallel I/O libraries (such as HDF5) and implements optimized I/O access patterns that can scale on larger number of processors. Performance results with standard benchmark problems and PFLOTRAN indicate that our library is able to maintain the same speedups as before with the added flexibility of being applicable to a wider range of I/O intensive applications.

  5. Schwerpunkt: Analyse von Algorithmen T atigkeitsbericht f ur das Jahr 2001

    E-Print Network [OSTI]

    Drmota, Michael

    Schwerpunkt: Analyse von Algorithmen T atigkeitsbericht f ur das Jahr 2001 1 Mitarbeiter 1. Bernhard Gittenberger (Inst. f. Geometrie, bis 30.9.2001 Zivildienst) 4. Thomas Klausner (FWF-Projekt S Forschungsschwerpunkts geschrieben wurden, siehe den Tatigkeitsbericht 2000. Im zweiten Jahr (2001) sind die folgenden

  6. ICF Program StatusSNL Z Facility UR/LLE OMEGA Presented to

    E-Print Network [OSTI]

    ICF Program StatusSNL Z Facility UR/LLE OMEGA Presented to: Fusion Power Associates Annual Meeting on planned path High energy density physics is recognized as an important and emerging scientific field NAS, OSTP reports Budget outlook remains tight FY2006 appropriation Outyear plans #12

  7. ur solid Earth undergoes constant change from motions within its core

    E-Print Network [OSTI]

    McLeod, Dennis

    O ur solid Earth undergoes constant change from motions within its core to the surface. Solid Earth is the physical planet we live on, not the oceans or atmosphere. Motions near Earth's cen- ter affect the geodynamo, which generates the Earth's magnetic field. Convection within Earth's mantle drives plate

  8. FAKULT AT F UR INFORMATIK DER TECHNISCHEN UNIVERSIT AT M UNCHEN

    E-Print Network [OSTI]

    Cremers, Daniel

    . Finally, we present reconstructed 3D models of workpieces of compelling visual quality and metric accuracy with Siemens Corporate Research Inc. Princeton, New Jersey, USA #12;#12;FAKULT AT F UR INFORMATIK DER.D. Submission: September 13, 2013 #12;#12;I assure the single handed composition of this master's thesis only

  9. Benchmarking in Wireless Networks Shafqat Ur Rehman, Thierry Turletti, Walid Dabbous

    E-Print Network [OSTI]

    Boyer, Edmond

    1 Benchmarking in Wireless Networks Shafqat Ur Rehman, Thierry Turletti, Walid Dabbous Abstract--Experimentation is evolving as a viable and realistic performance analysis approach in wireless networking research. Realism is provisioned by deploying real software (network stack, drivers, OS), and hardware (wireless cards, network

  10. Technische Universit at ChemnitzZwickau DFGForschergruppe '' SPC`` \\Delta Fakult at f ur Mathematik

    E-Print Network [OSTI]

    Chemnitz, Technische Universität

    Technische Universit¨ at Chemnitz­Zwickau DFG­Forschergruppe '' SPC`` \\Delta Fakult¨ at f¨ ur DFG­Forschergruppe '' Scientific Parallel Computing`` SPC 95 20 Juni 1995 Dritte, aktualisierte Fassung von SPC 93 1 (Mai 1993), ¨ uberarbeitet von M. Pester #12; Inhaltsverzeichnis 1 Einleitung 1 2

  11. Reducing Concurrency Bottlenecks in Parallel I/O Workloads

    SciTech Connect (OSTI)

    Manzanares, Adam C. [Los Alamos National Laboratory; Bent, John M. [Los Alamos National Laboratory; Wingate, Meghan [Los Alamos National Laboratory

    2011-01-01T23:59:59.000Z

    To enable high performance parallel checkpointing we introduced the Parallel Log Structured File System (PLFS). PLFS is middleware interposed on the file system stack to transform concurrent writing of one application file into many non-concurrently written component files. The promising effectiveness of PLFS makes it important to examine its performance for workloads other than checkpoint capture, notably the different ways that state snapshots may be later read, to make the case for using PLFS in the Exascale I/O stack. Reading a PLFS file involved reading each of its component files. In this paper we identify performance limitations on broader workloads in an early version of PLFS, specifically the need to build and distribute an index for the overall file, and the pressure on the underlying parallel file system's metadata server, and show how PLFS's decomposed components architecture can be exploited to alleviate bottlenecks in the underlying parallel file system.

  12. DB-Netz AG Offices

    High Performance Buildings Database

    Hamm, Germany The new office building for DB Netz AG was designed by the collaborative team of Architrav Architects and the Buildings Physics and Technical Building Services group of the University of Karlsruhe. The team developed an energy efficient building concept for the 64,304 sqft office building, located in Hamm, Germany. The design concept of the building is dominated by architectural solutions for ventilation, cooling and lighting. Use of HVAC and electric lighting is minimized as much as possible.

  13. Automatic Identification of Application I/O Signatures from Noisy Server-Side Traces

    SciTech Connect (OSTI)

    Liu, Yang [ORNL] [ORNL; Gunasekaran, Raghul [ORNL] [ORNL; Ma, Xiaosong [ORNL] [ORNL; Vazhkudai, Sudharshan S [ORNL] [ORNL

    2014-01-01T23:59:59.000Z

    Competing workloads on a shared storage system cause I/O resource contention and application performance vagaries. This problem is already evident in today s HPC storage systems and is likely to become acute at exascale. We need more interaction between application I/O requirements and system software tools to help alleviate the I/O bottleneck, moving towards I/O-aware job scheduling. However, this requires rich techniques to capture application I/O characteristics, which remain evasive in production systems. Traditionally, I/O characteristics have been obtained using client-side tracing tools, with drawbacks such as non-trivial instrumentation/development costs, large trace traffic, and inconsistent adoption. We present a novel approach, I/O Signature Identifier (IOSI), to characterize the I/O behavior of data-intensive applications. IOSI extracts signatures from noisy, zero-overhead server-side I/O throughput logs that are already collected on today s supercomputers, without interfering with the compiling/execution of applications. We evaluated IOSI using the Spider storage system at Oak Ridge National Laboratory, the S3D turbulence application (running on 18,000 Titan nodes), and benchmark-based pseudo-applications. Through our ex- periments we confirmed that IOSI effectively extracts an application s I/O signature despite significant server-side noise. Compared to client-side tracing tools, IOSI is transparent, interface-agnostic, and incurs no overhead. Compared to alternative data alignment techniques (e.g., dynamic time warping), it offers higher signature accuracy and shorter processing time.

  14. Reliable low latency I/O in torus-based interconnection networks

    E-Print Network [OSTI]

    Azeez, Babatunde

    2007-04-25T23:59:59.000Z

    In today's high performance computing environment I/O remains the main bottleneck in achieving the optimal performance expected of the ever improving processor and memory technologies. Interconnection networks therefore combines processing units...

  15. ATLAS I/O Performance Optimization in As-Deployed Environments

    E-Print Network [OSTI]

    Maier, Thomas; The ATLAS collaboration; Bhimji, Wahid; Elmsheuser, Johannes; van Gemmeren, Peter; Malon, David; Krumnack, Nils

    2015-01-01T23:59:59.000Z

    I/O is a fundamental determinant in the overall performance of physics analysis and other data-intensive scientific computing. It is, further, crucial to effective resource delivery by the facilities and infrastructure that support data-intensive science. To understand I/O performance, clean measurements in controlled environments are essential, but effective optimization requires as well an understanding of the complicated realities of as-deployed environments. These include a spectrum of local and wide-area data delivery and resilience models, heterogeneous storage systems, matches and mismatches between data organization and access patterns, multi-user considerations that may help or hinder individual job performance, and more. The ATLAS experiment has organized an interdisciplinary working group of I/O, persistence, analysis framework, distributed infrastructure, site deployment, and external experts to understand and improve I/O performance in preparation for Run 2 of the Large Hadron Collider. The adopt...

  16. Using Probabilistic I/O Automata to Analyze an Oblivious Transfer Protocol

    E-Print Network [OSTI]

    Canetti, Ran

    2006-06-19T23:59:59.000Z

    We demonstrate how to carry out cryptographic security analysis ofdistributed protocols within the Probabilistic I/O Automataframework of Lynch, Segala, and Vaandrager. This framework providestools for arguing rigorously ...

  17. Using Task-Structured Probabilistic I/O Automata to Analyze an Oblivious Transfer Protocol

    E-Print Network [OSTI]

    Canetti, Ran

    2007-02-16T23:59:59.000Z

    The Probabilistic I/O Automata framework of Lynch, Segala and Vaandrager provides tools for precisely specifying protocols and reasoning about their correctness using multiple levels of abstraction, based on implementation ...

  18. Using Task-Structured Probabilistic I/O Automata to Analyze an Oblivious Transfer Protocol

    E-Print Network [OSTI]

    Canetti, Ran

    2006-06-20T23:59:59.000Z

    The Probabilistic I/O Automata framework of Lynch, Segala and Vaandrager provides tools for precisely specifying protocols and reasoning about theircorrectness using multiple levels of abstraction, based on implementation ...

  19. High-Performance I/O: HDF5 for Lattice QCD

    SciTech Connect (OSTI)

    Kurth, Thorsten; Pochinsky, Andrew; Sarje, Abhinav; Syritsyn, Sergey; Walker-Loud, Andre

    2015-01-01T23:59:59.000Z

    Practitioners of lattice QCD/QFT have been some of the primary pioneer users of the state-of-the-art high-performance-computing systems, and contribute towards the stress tests of such new machines as soon as they become available. As with all aspects of high-performance-computing, I/O is becoming an increasingly specialized component of these systems. In order to take advantage of the latest available high-performance I/O infrastructure, to ensure reliability and backwards compatibility of data files, and to help unify the data structures used in lattice codes, we have incorporated parallel HDF5 I/O into the SciDAC supported USQCD software stack. Here we present the design and implementation of this I/O framework. Our HDF5 implementation outperforms optimized QIO at the 10-20% level and leaves room for further improvement by utilizing appropriate dataset chunking.

  20. Reliable low latency I/O in torus-based interconnection networks

    E-Print Network [OSTI]

    Azeez, Babatunde

    2007-04-25T23:59:59.000Z

    In today's high performance computing environment I/O remains the main bottleneck in achieving the optimal performance expected of the ever improving processor and memory technologies. Interconnection networks therefore combines processing units...

  1. Flow Phenomena at AGS Energies

    E-Print Network [OSTI]

    J. P. Wessels

    1997-04-07T23:59:59.000Z

    In this talk some of the latest data on directed sideward, elliptic, radial, and longitudinal flow at AGS energies will be reviewed. A method to identify the reaction plane event by event and the measurement of its resolution will be discussed. The distributions of global observables (transverse energy E_T and charged particle multiplicity N_c), as well as those of identified particles will be shown. Finally, the data will be put in context with measurements at other beam energies. These systematics will then be discussed in terms of possible signatures of the QCD phase transition.

  2. Sinosol AG | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro Industries Pvt LtdShawangunk, New York:SiG Solar GmbHKentucky:Sinosol AG Jump to: navigation,

  3. Interstrom AG | Open Energy Information

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    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof Energy 2,AUDIT REPORTEnergyFarmsPower Co Ltd JumpInformationInterstrom AG Jump

  4. Nordex AG | Open Energy Information

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    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof Energy 2,AUDIT REPORTEnergyFarmsPowerKaitian Windpower Jump to:NordEnergieNordex AG

  5. VWind AG | Open Energy Information

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    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof Energy 2,AUDITCalifornia Sector:Shreniksource HistoryUnlimitedVWind AG Jump to:

  6. ABIDAS AG | Open Energy Information

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    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-fTriWildcat 1 WindtheEnergySulfonate as aAAB AsiaABEEolica Jump to:ABIDAS AG

  7. AEE AG | Open Energy Information

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  8. ASP AG | Open Energy Information

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  9. Isovolta AG | Open Energy Information

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    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are8COaBulkTransmissionSitingProcess.pdfGetecGtelInterias Solar Energy JumpIremNot2007)Isovolta AG Jump to: navigation,

  10. Cowatec AG | Open Energy Information

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    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof EnergyInnovationinConcentratingEnergyCoosaPage Edit with formCowatec AG Jump to:

  11. Inergetic AG | Open Energy Information

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    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are8COaBulkTransmissionSitingProcess.pdfGetecGtel JumpCounty,Jump7Open Energy InformationProfessionalInergetic AG

  12. Alteno AG | Open Energy Information

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  13. Fuhrlander AG | Open Energy Information

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    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof Energy 2,AUDIT REPORTEnergyFarms A S JumpWindfarm HoldingsFreeFuhrlander AG Place:

  14. Odersun AG | Open Energy Information

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    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluatingGroup |JilinLuOpenNorth AmericaNorthwestOakdaleOdersun AG Jump to: navigation,

  15. Petrotec AG | Open Energy Information

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    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluatingGroupPerfectenergy International Limited JumpPetbow CogenerationPetrotec AG

  16. Solarcomplex AG | Open Energy Information

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    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro Industries Pvt LtdShawangunk, NewSingapore Jump to:VoltaicSolarProSolarWorks NJSolarcomplex AG

  17. ENRO AG | Open Energy Information

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    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model,DOE FacilityDimondale,South, NewDyer County,ECO2Ltd Place: Nr. Horsham,ENRENRO AG

  18. Loremo AG | Open Energy Information

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  19. Solarsquare AG | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty Edit with form HistoryRistmaSinosteelSolar EnergySolaria FairwaySolarsquare AG Jump

  20. Solarstocc AG | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty Edit with form HistoryRistmaSinosteelSolar EnergySolaria FairwaySolarsquare AG

  1. Solarwatt AG | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty Edit with form HistoryRistmaSinosteelSolar EnergySolariaSolarwatt AG Jump to:

  2. Solea AG | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty Edit with form HistoryRistmaSinosteelSolar EnergySolariaSolarwatt AG

  3. Altus AG | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-fTriWildcat Place: Wayne,EnergyInfrastructureAltira Group LLCAltus AG Jump

  4. Tse AG | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty Edit withTianlin Baxin HydropowerTrinity Thermal Systems JumpTrue Electric LLCTse AG

  5. Welivit AG | Open Energy Information

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    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty Edit withTianlin BaxinUmweltVillageGraph HomeWaranaWaterEnergyWeeklyWelivit AG Jump

  6. REON AG | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I GeothermalPotentialBiopowerSolidGenerationMethodInformationeNevada <REC Solar (Colorado)srlREON AG

  7. Ag

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

    (c) The term ''atomic energy'' means all forms of energy released in the course of nuclear fission or nuclear transformation. (d) The term ''atomic weapon'' means any device...

  8. Molecular Dynamics Simulation of the AgCl/Electrolyte Interfacial...

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

    Simulation of the AgClElectrolyte Interfacial Capacity. Molecular Dynamics Simulation of the AgClElectrolyte Interfacial Capacity. Abstract: Molecular dynamics simulation of the...

  9. Layout-Aware I/O Scheduling for Terabits Data Movement

    SciTech Connect (OSTI)

    Kim, Youngjae [ORNL] [ORNL; Atchley, Scott [ORNL] [ORNL; Vallee, Geoffroy R [ORNL] [ORNL; Shipman, Galen M [ORNL] [ORNL

    2013-01-01T23:59:59.000Z

    Many science facilities, such as the Department of Energy s Leadership Computing Facilities and experimental facilities including the Spallation Neutron Source, Stanford Linear Accelerator Center, and Advanced Photon Source, produce massive amounts of experimental and simulation data. These data are often shared among the facilities and with collaborating institutions. Moving large datasets over the wide- area network (WAN) is a major problem inhibiting collaboration. Next- generation, terabit-networks will help alleviate the problem, however, the parallel storage systems on the end-system hosts at these institutions can become a bottleneck for terabit data movement. The parallel storage system (PFS) is shared by simulation systems, experimental systems, analysis and visualization clusters, in addition to wide-area data movers. These competing uses often induce temporary, but significant, I/O load imbalances on the storage system, which impact the performance of all the users. The problem is a serious concern because some resources are more expensive (e.g. super computers) or have time-critical deadlines (e.g. experimental data from a light source), but parallel file systems handle all requests fairly even if some storage servers are under heavy load. This paper investigates the problem of competing workloads accessing the parallel file system and how the performance of wide-area data movement can be improved in these environments. First, we study the I/O load imbalance problems using actual I/O performance data collected from the Spider storage system at the Oak Ridge Leadership Computing Facility. Second, we present I/O optimization solutions with layout-awareness on end-system hosts for bulk data movement. With our evaluation, we show that our I/O optimization techniques can avoid the I/O congested disk groups, improving storage I/O times on parallel storage systems for terabit data movement.

  10. Understanding I/O workload characteristics of a Peta-scale storage system

    SciTech Connect (OSTI)

    Kim, Youngjae [ORNL; Gunasekaran, Raghul [ORNL

    2015-01-01T23:59:59.000Z

    Understanding workload characteristics is critical for optimizing and improving the performance of current systems and software, and architecting new storage systems based on observed workload patterns. In this paper, we characterize the I/O workloads of scientific applications of one of the world s fastest high performance computing (HPC) storage cluster, Spider, at the Oak Ridge Leadership Computing Facility (OLCF). OLCF flagship petascale simulation platform, Titan, and other large HPC clusters, in total over 250 thousands compute cores, depend on Spider for their I/O needs. We characterize the system utilization, the demands of reads and writes, idle time, storage space utilization, and the distribution of read requests to write requests for the Peta-scale Storage Systems. From this study, we develop synthesized workloads, and we show that the read and write I/O bandwidth usage as well as the inter-arrival time of requests can be modeled as a Pareto distribution. We also study the I/O load imbalance problems using I/O performance data collected from the Spider storage system.

  11. Core-corona separation in the UrQMD hybrid model

    SciTech Connect (OSTI)

    Steinheimer, J.; Bleicher, M. [Institut fuer Theoretische Physik, Goethe-Universitaet, Max-von-Laue-Strasse 1, D-60438 Frankfurt am Main (Germany); Frankfurt Institute for Advanced Studies (FIAS), Ruth-Moufang-Strasse 1, D-60438 Frankfurt am Main (Germany)

    2011-08-15T23:59:59.000Z

    We employ the UrQMD transport + hydrodynamics hybrid model to estimate the effects of a separation of the hot equilibrated core and the dilute corona created in high-energy heavy-ion collisions. It is shown that the fraction of the system that can be regarded as an equilibrated fireball changes over a wide range of energies. This has an impact, especially on strange particle abundances. We show that such a core corona separation allows for an improvement in the description of strange particle ratios and flow as a function of beam energy as well as strange particle yields as a function of centrality.

  12. Core-corona separation in the UrQMD hybrid model

    E-Print Network [OSTI]

    J. Steinheimer; M. Bleicher

    2011-08-09T23:59:59.000Z

    We employ the UrQMD transport + hydrodynamics hybrid model to estimate the effects of a separation of the hot equilibrated core and the dilute corona created in high energy heavy ion collisions. It is shown that the fraction of the system which can be regarded as an equilibrated fireball changes over a wide range of energies. This has an impact especially on strange particle abundancies. We show that such a core corona separation allows to improve the description of strange particle ratios and flow as a function of beam energy as well as strange particle yields as a function of centrality.

  13. Facile synthesis of novel Ag/AgI/BiOI composites with highly enhanced visible light photocatalytic performances

    SciTech Connect (OSTI)

    Cao, Jing, E-mail: caojing@mail.ipc.ac.cn [College of Chemistry and Materials Science, Huaibei Normal University, Huaibei 235000, Anhui (China); State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100 (China); Zhao, Yijie; Lin, Haili; Xu, Benyan [College of Chemistry and Materials Science, Huaibei Normal University, Huaibei 235000, Anhui (China); Chen, Shifu, E-mail: chshifu@chnu.edu.cn [College of Chemistry and Materials Science, Huaibei Normal University, Huaibei 235000, Anhui (China)

    2013-10-15T23:59:59.000Z

    Novel Ag/AgI/BiOI composites were controllably synthesized via a facile ion-exchange followed by photoreduction strategy by using hierarchical BiOI microflower as substrate. The as-prepared Ag/AgI/BiOI composites were studied by X-ray powder diffractometer (XRD), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), X-ray photoelectron spectroscopy (XPS), BrunauerEmmettTeller (BET) surface area analyzer and UVvis diffuse reflectance spectroscopy (DRS). Under visible light (?>420 nm), Ag/AgI/BiOI displayed highly enhanced photocatalytic activities for degradation of methyl orange (MO) compared to the pure hierarchical BiOI, which was mainly ascribed to the highly efficient separation of electrons and holes through the closely contacted interfaces in the Ag/AgI/BiOI ternary system. - Graphical abstract: Ag/AgI/BiOI displayed excellent photocatalytic activities for methyl orange degradation under visible light, which was mainly ascribed to the highly efficient separation of electrons and holes through Z-scheme pathway. Display Omitted - Highlights: Novel Ag/AgI/BiOI composites were successfully synthesized. Ag/AgI/BiOI displayed higher visible light activities than those of pure BiOI and AgI. O{sub 2}{sup ?} and h{sup +}, especially O{sub 2}{sup ?}, dominated the photodegradation process of MO. A Z-scheme pattern was adopted for Ag/AgI/BiOI activity enhancement.

  14. Ag Education Student 1234 Education Drive

    E-Print Network [OSTI]

    Ag Education Student 1234 Education Drive Fort Collins, CO 80523 educationstudent@gmail.com~970-222-1234 Education Bachelors of Science in Agriculture Education (Teacher Licensure requirements met) Anticipated May

  15. High intensity performance of the Brookhaven AGS

    SciTech Connect (OSTI)

    Brennan, J.M.; Roser, T.

    1996-07-01T23:59:59.000Z

    Experience and results from recent high intensity proton running periods of the Brookhaven AGS, during which a record intensity for a proton synchrotron of 6.3 x 10{sup 13} protons/pulse was reached, is presented. This high beam intensity allowed for the simultaneous operation of three high precision rare kaon decay experiments. The record beam intensities were achieved after the 1.5 GeV Booster was commissioned and a transition jump system, a powerful transverse damper, and an rf upgrade in the AGS were completed. Recently even higher intensity proton synchrotrons are studied for neutron spallation sources or proton driver for a muon collider. Implications of the experiences from the AGS to these proposals and also possible future upgrades for the AGS are discussed.

  16. AGS fixed target program with nuclear beams

    SciTech Connect (OSTI)

    Foley, K.J.

    1984-01-01T23:59:59.000Z

    The recent approval of the beam transfer line from the Tandem Van de Graaf to the AGS signals the advent of a new era of Nuclear and Particle Physics at BNL. High Energy nuclear beams are expected to be available for experiments in 1986. I will discuss the direct link between the Tandems and the AGS. Two other proposed projects, the Relativistic Heavy Ion Collider and the Synchrotron Booster, are discussed in another presentation to this conference.

  17. H5hut: A High-Performance I/O Library for Particle-based Simulations

    SciTech Connect (OSTI)

    Howison, Mark; Adelmann, Andreas; Bethel, E. Wes; Gsell, Achim; Oswald, Benedikt; Prabhat,

    2010-09-24T23:59:59.000Z

    Particle-based simulations running on large high-performance computing systems over many time steps can generate an enormous amount of particle- and field-based data for post-processing and analysis. Achieving high-performance I/O for this data, effectively managing it on disk, and interfacing it with analysis and visualization tools can be challenging, especially for domain scientists who do not have I/O and data management expertise. We present the H5hut library, an implementation of several data models for particle-based simulations that encapsulates the complexity of HDF5 and is simple to use, yet does not compromise performance.

  18. Infrared transmissive, hollow plastic waveguides with inner AgAgI coatings

    E-Print Network [OSTI]

    A. Harrington Hollow polycarbonate waveguides with thin-film coatings of AgAgI were fabricated and at the same time maintain good flexibility we have chosen to use polycarbonate tubing with bore sizes ranging from 500 to 2000 m. Polycarbonate tubing is quite flexible in the bore sizes up to 6000 m

  19. Function Test Framework for Testing IO-Blocks in a Model-Based Rapid Prototyping Development

    E-Print Network [OSTI]

    Function Test Framework for Testing IO-Blocks in a Model-Based Rapid Prototyping Development -- Testing and verification are important methods for gaining confidence in the reliability of a software changing development cycles or that is tar- geted at many platforms. In this paper we present a test

  20. Synthesizing Representative I/O Workloads Using Iterative Distillation Zachary Kurmas

    E-Print Network [OSTI]

    Kurmas, Zachary

    Synthesizing Representative I/O Workloads Using Iterative Distillation Zachary Kurmas College proper- ties are "key" for a given workload and storage system. We have developed a tool, the Distiller, that automati- cally identifies the key properties ("attribute-values") of the workload. The Distiller then uses

  1. A Novel System Architecture for Web Scale Applications Using Lightweight CPUs and Virtualized I/O

    E-Print Network [OSTI]

    Balasubramonian, Rajeev

    servers, to achieve scalable and low-cost processing. The Map-Reduce frame- work and its open-system where multiple servers share I/O resources. An ASIC based high-bandwidth interconnect fabric, and FPGA envelope. To overcome software inefficiency and increase the utilization of virtualized disk bandwidth

  2. An Energy-Oriented Evaluation of Buffer Cache Algorithms Using Parallel I/O Workloads

    E-Print Network [OSTI]

    Zhu, Yifeng

    utilize these energy-aware devices. As we explore different management schemes under five real-world--Memory energy consumption, cache replacement algorithms, parallel I/O, cluster storage. ? 1 INTRODUCTION of power consumption. The energy breakdown measured on a real server shows that the memory energy

  3. Gathering at the Well: Creating Communities for Grid I/O #

    E-Print Network [OSTI]

    Arpaci-Dusseau, Remzi

    to data repositories is neither scalable nor efficient for large numbers of jobs. I/O systems that solve. Schedulers must bring jobs and data in close proximity in order to satisfy through put, scalability, and policy requirements. Most systems accom plish this by making either jobs or data mobile. We propose

  4. Gathering at the Well: Creating Communities for Grid I/O

    E-Print Network [OSTI]

    Wisconsin at Madison, University of

    to data repositories is neither scalable nor efficient for large numbers of jobs. I/O systems that solve. Schedulers must bring jobs and data in close proximity in order to satisfy through- put, scalability, and policy requirements. Most systems accom- plish this by making either jobs or data mobile. We propose

  5. Ag on Si(111) from basic science to application

    SciTech Connect (OSTI)

    Belianinov, Aleksey

    2012-04-04T23:59:59.000Z

    In our work we revisit Ag and Au adsorbates on Si(111)-7x7, as well as experiment with a ternary system of Pentacene, Ag and Si(111). Of particular interest to us is the Si(111)-({radical}3x{radical}3)R30{degree}Ag (Ag-Si-{radical}3 hereafter). In this thesis I systematically e plore effects of Ag deposition on the Ag-Si-{radical}3 at different temperatures, film thicknesses and deposition fluxes. The generated insight of the Ag system on the Si(111) is then applied to generate novel methods of nanostructuring and nanowire growth. I then extend our expertise to the Au system on the Ag-Si(111) to gain insight into Au-Si eutectic silicide formation. Finally we explore behavior and growth modes of an organic molecule on the Ag-Si interface.

  6. Local governments are taking climate action plans to a new leve ont holil \\()ur breath waiting for a new

    E-Print Network [OSTI]

    Handy, Susan L.

    Local governments are taking climate action plans to a new leve ont holil \\()ur breath waiting-Los Angeles. Where climate planning is taking place is also notable. "It's not just a Left Coast acdvity and an energy-efficient hous- ing stock." And, she adds, "you don't have to be an environmentalist to support

  7. UrQMD Study of the Effects of Centrality Definitions on Higher Moments of Net Protons at RHIC

    E-Print Network [OSTI]

    Gary D. Westfall

    2014-12-18T23:59:59.000Z

    A study using UrQMD is presented concerning the higher moments of net protons from Au+Au collisions at 7.7, 11.5, 14.6, 19.6, 27, 39, 62.4, and 200 GeV, concentrating on $C_{4}/C_{2} = \\kappa\\sigma^{2}$. Higher moments of net protons are predicted to be a sensitive probe of the critical point of QCD. At the QCD critical point, particular ratios of the moments of net protons are predicted to differ from the Poisson baseline. Recently STAR has published the higher moments of net protons for Au+Au collisions at $\\sqrt{s_{\\rm NN}}$ = 7.7, 11.5, 19.6, 27, 39, 62.4, and 200 GeV. UrQMD quantitatively reproduces STAR's measured $C_{4}/C_{2} = \\kappa\\sigma^{2}$ for net protons for all Au+Au collisions more central than 30\\% and at all centralities for $\\sqrt{s_{\\rm NN}}$ = 7.7 and 11.5 GeV. The effects are investigated of three different centrality definitions on the values of $C_{4}/C_{2} = \\kappa\\sigma^{2}$ from UrQMD calculations including the impact parameter given by UrQMD. It is shown that using a centrality definition based on multiplicity to calculate the higher moments of net protons gives a biased answer for $C_{4}/C_{2} = \\kappa\\sigma^{2}$, except in the most central bin (0-5\\%).

  8. Spin coating of Ag nanoparticles: Effect of reduction

    SciTech Connect (OSTI)

    Ansari, A. A., E-mail: sdsartale@physics.unipune.ac.in; Sartale, S. D., E-mail: sdsartale@physics.unipune.ac.in [Thin Films and Nanomaterials Laboratory, Department of Physics, University of Pune, Pune - 411007 (India)

    2014-04-24T23:59:59.000Z

    A surfactant free method for the growth of Ag nanoparticles on glass substrate by spin coating of Ag ions solution followed by chemical reduction in aqueous hydrazine hydrate (HyH) solution has been presented. Appearance of surface plasmon resonance confirms the formation of Ag nanoparticles. Morphology and absorbance spectra of Ag nanoparticles films are used to examine effect of hydrazine concentration on the growth of Ag nanoparticles. SEM images show uniformly distributed Ag nanoparticles. Rate constant was found to be dependent on HyH concentration as a consequence influence particle size.

  9. AgPro | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-fTriWildcat 1AMEE JumpAeroWind Inc.Information AfluenteAg FuelsAgPro

  10. Getec AG Contracting | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are8COaBulkTransmissionSitingProcess.pdfGetec AG Contracting Jump to: navigation, search Name: Getec AG Contracting

  11. Umweltschutz UBP AG | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty Edit withTianlin BaxinUmwelt Management AG UMaAG Jump to: navigation,

  12. A novel polythreading Ag(I) coordination polymer with bluephotolumine...

    Office of Scientific and Technical Information (OSTI)

    polymer with blue photoluminescence Re-direct Destination: One new compound, Ag(p-bix)sub 3Ag(Hbtc)sub 22Hsub 2O (Hsub 3btc1,2,4-benzenetricarboxylate,...

  13. Ag@AgHPW as a plasmonic catalyst for visible-light photocatalytic degradation of environmentally harmful organic pollutants

    SciTech Connect (OSTI)

    Zhou, Wenhui; Cao, Minhua, E-mail: caomh@bit.edu.cn; Li, Na; Su, Shuangyue; Zhao, Xinyu; Wang, Jiangqiang; Li, Xianghua; Hu, Changwen

    2013-06-01T23:59:59.000Z

    Graphical abstract: Ag@Ag{sub x}H{sub 3?x}PW12O40 (Ag@AgHPW) nanoparticles (NPs), a new visible-light driven plasmonic photocatalyst, are prepared by a green photoreduction strategy without the addition of any surfactant, which show a high activity and stability for the degradation of methyl blue (MB) under visible light irradiation. - Highlights: A new visible-light driven photocatalyst Ag@Ag{sub x}H{sub 3?x}PW{sub 12}O{sub 40} was designed. The photocatalyst shows a high activity for the degradation of methyl blue. The high activity can be ascribed to the synergy of photoexcited AgHPW and Ag. - Abstract: Ag@Ag{sub x}H{sub 3?x}PW{sub 12}O{sub 40} (Ag@AgHPW) nanoparticles (NPs), a new visible-light driven plasmonic photocatalyst, are prepared by a green photoreduction strategy without the addition of any surfactant. They show strong absorption in the visible region because of the localized surface plasmon resonance (LSPR) of Ag NPs. This plasmonic photocatalyst shows a high activity and stability for the degradation of methyl blue (MB) under visible light irradiation, which could be attributed to the highly synergy of photoexcited Ag{sub x}H{sub 3?x}PW{sub 12}O{sub 40} (AgHPW) and plasmon-excited Ag NPs and the confinement effects at interfaces between polyoxometalates (POMs) and silver. POM anions have redox ability and high photocatalytic activity, whereas Ag NPs could effectively accelerate the separation of electrons and holes, both of which contribute to their high activity.

  14. The BNL AGS accelerator complex status and future plans

    SciTech Connect (OSTI)

    Tanaka, Mitsuyoshi [AGS Department, Brookhaven National Laboratory, Upton, New York 11973 (United States)

    1997-05-20T23:59:59.000Z

    This paper describes the present performance and capability of the BNL AGS accelerator complex and possible future intensity upgrade plans. In 1995, the AGS reached its design upgrade goal of 6.0{center_dot}10{sup 13} ppp with the Booster. The AGS with a new fast extracted beam (FEB) system is able to perform single bunch multiple extraction at 30 Hz per AGS cycle for the g-2 experiment and for RHIC injection.

  15. The BNL AGS accelerator complex status and future plans

    SciTech Connect (OSTI)

    Tanaka, M. [AGS Department, Brookhaven National Laboratory, Upton, New York11973 (United States)

    1997-05-01T23:59:59.000Z

    This paper describes the present performance and capability of the BNL AGS accelerator complex and possible future intensity upgrade plans. In 1995, the AGS reached its design upgrade goal of 6.0{center_dot}10{sup 13}ppp with the Booster. The AGS with a new fast extracted beam (FEB) system is able to perform single bunch multiple extraction at 30 Hz per AGS cycle for the g-2 experiment and for RHIC injection. {copyright} {ital 1997 American Institute of Physics.}

  16. The BNL AGS accelerator complex status and future plans

    SciTech Connect (OSTI)

    Tanaka, Mitsuyoshi

    1997-05-01T23:59:59.000Z

    This paper describes the present performance and capability of the BNL AGS accelerator complex and possible future intensity upgrade plans. In 1995, the AGS reached its design upgrade goal of 6.0 x 10(exp 13) ppp with the Booster. The AGS with a new fast extracted beam (FEB) system is able to perform single bunch multiple extraction at 30 Hz per AGS cycle for the g-2 experiment and for RHIC injection.

  17. This page shows how to use the My Pitt Video (Panopto) iOS application on an iPad. To log into the My Pitt Video (Panopto) iOS App, tap "Sign In" in the top left corner.

    E-Print Network [OSTI]

    Benos, Panayiotis "Takis"

    iPad App iPad App This page shows how to use the My Pitt Video (Panopto) iOS application on an iPad. Login To log into the My Pitt Video (Panopto) iOS App, tap "Sign In" in the top left corner. In the Sign name and tap "Record a new video" to begin recording. Page 9 of 17 #12;iPad App Once you are finished

  18. Siemens AG, CT, September 2001 CORPORATETECHNOLOGY

    E-Print Network [OSTI]

    s Siemens AG, CT, September 2001 CORPORATETECHNOLOGY Research and Technology at Siemens Transportation Power Information & Communications Health Automation & Control #12;2 Siemens AGResearch and Technology at Siemens CORPORATETECHNOLOGY CT / E 020 a - 02.01 Key Figures for 2000 Amounts in billions

  19. Depolarizing 'beat' resonances in the Brookhaven AGS

    SciTech Connect (OSTI)

    Terwilliger, K.M.; Courant, E.D.; Krisch, A.D.; Ratner, L.D.

    1985-10-01T23:59:59.000Z

    While accelerating polarized protons in the Brookhaven AGS we found a variant of the standard imperfection and intrinsic depolarizing resonances which has some of the properties of both types. Imperfection resonances occur at G..gamma.. = k, when the number of spin precessions per revolution, G gamma, equals a harmonic of the depolarizing field, k. Intrinsic resonances occur at G..gamma.. = nP + or - ..nu.. /SUB Z/ , when the AGS gradient periodicities, nP, modulate free vertical betatron oscillations to create the sum and difference frequencies. The variant resonance is a beat between nP and an imperfection driven betatron oscillation of periodicity k'. These occur at G..gamma.. = nP + or - k', and are strongest when the driven betatron oscillation is largest. The effect was most dramatic at the strong G..gamma.. = 27 resonance. Since ..nu.. /SUB Z/ = 8.8 for the AGS, and there is a major nP = 36 AGS periodicity, a strong beat resonance should exist at G gamma = 36-9 = 27. Applying a 27 /SUP th/ harmonic correction directly was unsuccessful, but a 9 /SUP th/ harmonic correction removed the depolarization.

  20. Mathus Dejori, Siemens AG Structural learning of Bayesian networks

    E-Print Network [OSTI]

    Popeea, Corneliu - Chair for Foundations of Software Reliability and Theoretical Computer Science

    Mathus Dejori, Siemens AG Structural learning of Bayesian networks Mathus Dejori mathaeus.dejori.external@mchp.siemens, Siemens AG Schtzung der unterliegenden zusammengesetzten Wahrscheinlichkeitsdichte aus den Daten;Mathus Dejori, Siemens AG Graphical model Combines probablity theory and graph theory is defined

  1. PD Dr. Martin Stetter, Siemens AG 1 Das lineare Modell

    E-Print Network [OSTI]

    Popeea, Corneliu - Chair for Foundations of Software Reliability and Theoretical Computer Science

    PD Dr. Martin Stetter, Siemens AG 1 Das lineare Modell Ausgangspunkt: Lineares Perceptron vorgegeben, werden nicht gelernt #12;PD Dr. Martin Stetter, Siemens AG 2 Geschrieben als Regressionsmodell Regression: Lineares Modell #12;PD Dr. Martin Stetter, Siemens AG 3 ML-Parameterschtzung des linearen

  2. PD Dr. Martin Stetter, Siemens AG 1 Optimierungsverfahren

    E-Print Network [OSTI]

    Popeea, Corneliu - Chair for Foundations of Software Reliability and Theoretical Computer Science

    PD Dr. Martin Stetter, Siemens AG 1 Optimierungsverfahren Optimierung konvexer Funktionen: Optimierungsverfahren #12;PD Dr. Martin Stetter, Siemens AG 2 Optimierung konvexer Funktionen Hufiges Problem bei Stetter, Siemens AG 3 Funktionen einer Variable )(wF 1D-Gradientenabstieg: Gehe ein kleines Stck

  3. AGS experiments -- 1996, 1997, 1998, 1999. Fifteenth edition

    SciTech Connect (OSTI)

    Lo Presti, P.

    1999-03-01T23:59:59.000Z

    This report is a compilation of two-page summaries for AGS experiments for FY 1996, FY 1997, FY 1998, FY 1999. The bulk of the experiments are for high energy physics and nuclear physics programs. Also included are the run schedules for the AGS for each of those years and a listing of publications of AGS experiments for 1982--1999.

  4. Enabling Event Tracing at Leadership-Class Scale through I/O Forwarding Middleware

    SciTech Connect (OSTI)

    Ilsche, Thomas [Technische Universitat Dresden] [Technische Universitat Dresden; Schuchart, Joseph [Technische Universitat Dresden] [Technische Universitat Dresden; Cope, Joseph [Argonne National Laboratory (ANL)] [Argonne National Laboratory (ANL); Kimpe, Dries [Argonne National Laboratory (ANL)] [Argonne National Laboratory (ANL); Jones, Terry R [ORNL] [ORNL; Knuepfer, Andreas [Technische Universitat Dresden] [Technische Universitat Dresden; Iskra, Kamil [Argonne National Laboratory (ANL)] [Argonne National Laboratory (ANL); Ross, Robert [Argonne National Laboratory (ANL)] [Argonne National Laboratory (ANL); Nagel, Wolfgang E. [Technische Universitat Dresden] [Technische Universitat Dresden; Poole, Stephen W [ORNL] [ORNL

    2012-01-01T23:59:59.000Z

    Event tracing is an important tool for understanding the performance of parallel applications. As concurrency increases in leadership-class computing systems, the quantity of performance log data can overload the parallel file system, perturbing the application being observed. In this work we present a solution for event tracing at leadership scales. We enhance the I/O forwarding system software to aggregate and reorganize log data prior to writing to the storage system, significantly reducing the burden on the underlying file system for this type of traffic. Furthermore, we augment the I/O forwarding system with a write buffering capability to limit the impact of artificial perturbations from log data accesses on traced applications. To validate the approach, we modify the Vampir tracing tool to take advantage of this new capability and show that the approach increases the maximum traced application size by a factor of 5x to more than 200,000 processors.

  5. ~mcupkric EnviroMvnr Vol. IS. No. IO, pp. 1969-2002. 1984 Pnnted in Great Britain.

    E-Print Network [OSTI]

    Hunt, Julian

    ~mcupkric EnviroMvnr Vol. IS. No. IO, pp. 1969-2002. 1984 Pnnted in Great Britain. ocKJ4-6981/84 13 diffusion, stratified flow, wind tunnel, towing tank, complex terrain, air pollution. NOMENCLATURE constant

  6. Investigation and design of a network, I/O and storage SDC susceptibility analzer

    SciTech Connect (OSTI)

    Dubois, Andrew [Los Alamos National Laboratory; Dubois, David [Los Alamos National Laboratory; Michalak, Sarah [Los Alamos National Laboratory

    2011-01-19T23:59:59.000Z

    This slide deck is intended for the Durmstrang Team Quarterly Review to be held January 25, 2011 in Baltimore, MD. The slides provide an overview of the Investigation and Design of a Network, I/O and Storage SDC Susceptibility Analyzer project. In addition, the slides provide the goals of the project, details of the work done to date and the project status and future work.

  7. I/O Router Placement and Fine-Grained Routing on Titan to Support Spider II

    SciTech Connect (OSTI)

    Ezell, Matthew A [ORNL] [ORNL; Dillow, David [None] [None; Oral, H Sarp [ORNL] [ORNL; Wang, Feiyi [ORNL] [ORNL; Tiwari, Devesh [ORNL] [ORNL; Maxwell, Don E [ORNL] [ORNL; Leverman, Dustin B [ORNL] [ORNL; Hill, Jason J [ORNL] [ORNL

    2014-01-01T23:59:59.000Z

    The Oak Ridge Leadership Computing Facility (OLCF) introduced the concept of Fine-Grained Routing in 2008 to improve I/O performance between the Jaguar supercomputer and Spider, OLCF s center-wide Lustre file system. Fine-grained routing organizes I/O paths to minimize congestion. Jaguar has since been upgraded to Titan, providing more than a ten-fold improvement in peak performance. To support the center s increased computational capacity and I/O demand, the Spider file system has been replaced with Spider II. Building on the lessons learned from Spider, an improved method for placing LNET routers was developed and implemented for Spider II. The fine-grained routing scripts and configuration have been updated to provide additional optimizations and better match the system setup. This paper presents a brief history of fine-grained routing at OLCF, an introduction to the architectures of Titan and Spider II, methods for placing routers in Titan, and details about the fine-grained routing configuration.

  8. Temperature dependent effects during Ag deposition on Cu(110)

    SciTech Connect (OSTI)

    Taylor, T.N.; Muenchausen, R.E.; Hoffbauer, M.A.; Denier van der Gon, A.W.; van der Veen, J.F. (Los Alamos National Lab., NM (USA); FOM-Instituut voor Atoom-en Molecuulfysica, Amsterdam (Netherlands))

    1989-01-01T23:59:59.000Z

    The composition, structure, and morphology of ultrathin films grown by Ag deposition on Cu(110) were monitored as a function of temperature using low-energy electron diffraction (LEED), Auger electron spectroscopy (AES), and medium energy ion scattering (MEIS). Aligned backscattering measurements with 150 keV He ions indicate that the Ag resides on top of the Cu and there is no significant surface compound formation. Measurements with LEED show that the Ag is initially confined to the substrate troughs. Further deposition forces the Ag out of the troughs and results in a split c(2 {times} 4) LEED pattern, which is characteristic of a distorted Ag(111) monolayer template. As verified by both AES and MEIS measurements, postmonolayer deposition of Ag on Cu(110) at 300K leads to a pronounced 3-dimensional clustering. Ion blocking analysis of the Ag clusters show that the crystallites have a (110)-like growth orientation, implying that the Ag monolayer template undergoes a rearrangement. These data are confirmed by low temperature LEED results in the absence of clusters, which indicate that Ag multilayers grow from a Ag--Cu interface where the Ag is captured in the troughs. Changes observed in the film structure and morphology are consistent with a film growth mechanism that is driven by overlayer strain response to the substrate corrugation. 16 refs., 4 figs.

  9. US-CERT Control System Center Input/Output (I/O) Conceputal Design

    SciTech Connect (OSTI)

    Not Available

    2005-02-01T23:59:59.000Z

    This document was prepared for the US-CERT Control Systems Center of the National Cyber Security Division (NCSD) of the Department of Homeland Security (DHS). DHS has been tasked under the Homeland Security Act of 2002 to coordinate the overall national effort to enhance the protection of the national critical infrastructure. Homeland Security Presidential Directive HSPD-7 directs the federal departments to identify and prioritize critical infrastructure and protect it from terrorist attack. The US-CERT National Strategy for Control Systems Security was prepared by the NCSD to address the control system security component addressed in the National Strategy to Secure Cyberspace and the National Strategy for the Physical Protection of Critical Infrastructures and Key Assets. The US-CERT National Strategy for Control Systems Security identified five high-level strategic goals for improving cyber security of control systems; the I/O upgrade described in this document supports these goals. The vulnerability assessment Test Bed, located in the Information Operations Research Center (IORC) facility at Idaho National Laboratory (INL), consists of a cyber test facility integrated with multiple test beds that simulate the nation's critical infrastructure. The fundamental mission of the Test Bed is to provide industry owner/operators, system vendors, and multi-agency partners of the INL National Security Division a platform for vulnerability assessments of control systems. The Input/Output (I/O) upgrade to the Test Bed (see Work Package 3.1 of the FY-05 Annual Work Plan) will provide for the expansion of assessment capabilities within the IORC facility. It will also provide capabilities to connect test beds within the Test Range and other Laboratory resources. This will allow real time I/O data input and communication channels for full replications of control systems (Process Control Systems [PCS], Supervisory Control and Data Acquisition Systems [SCADA], and components). This will be accomplished through the design and implementation of a modular infrastructure of control system, communications, networking, computing and associated equipment, and measurement/control devices. The architecture upgrade will provide a flexible patching system providing a quick ''plug and play''configuration through various communication paths to gain access to live I/O running over specific protocols. This will allow for in-depth assessments of control systems in a true-to-life environment. The full I/O upgrade will be completed through a two-phased approach. Phase I, funded by DHS, expands the capabilities of the Test Bed by developing an operational control system in two functional areas, the Science & Technology Applications Research (STAR) Facility and the expansion of various portions of the Test Bed. Phase II (see Appendix A), funded by other programs, will complete the full I/O upgrade to the facility.

  10. On the Automation of Encoding Processes in the Quantum IO Monad

    E-Print Network [OSTI]

    James Barratt

    2012-10-02T23:59:59.000Z

    It is now clear that the use of resilient encoding schemes will be required for any quantum computing device to be realised. However, quantum programmers of the future will not wish to be tied up in the particulars of such encoding schemes. Quantum programming languages and libraries are already being developed, one of which is the Quantum IO Monad. QIO, as it is often abbreviated to, provides an interface to define and simulate quantum computations via a library of functions written in Haskell, a purely functional programming language. A solution is presented that takes an arbitrary QIO program and returns an equivalent program incorporating some specified quantum error correction techniques.

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

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn'tOrigin of Contamination in ManyDepartment ofOil's Impact onDepartment ofStorageOpenMortar.io: An

  12. Parallel I/O Software Infrastructure for Large-Scale Systems

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)IntegratedSpeeding access toTestPhysics LabInterconnection RiskMarchParallel I/O

  13. Double dumbbell shaped AgNi alloy by pulsed electrodeposition

    SciTech Connect (OSTI)

    Dhanapal, K.; Vasumathi, M.; Santhi, Kalavathy [Materials Science Centre, Department of Nuclear Physics, University of Madras, Guindy Campus, Chennai 600 025 (India); Narayanan, V., E-mail: stephen-arum@hotmail.com; Stephen, A., E-mail: stephen-arum@hotmail.com [Department of Inorganic Chemistry, University of Madras, Guindy Campus, Chennai-600 025 (India)

    2014-01-28T23:59:59.000Z

    Silver-Nickel is the well-known thermally immiscible system that makes them quite complex for the formation of alloy. This kind of alloy can be attained from electrodeposition method. In the present work, AgNi alloy was synthesized by pulsed electrodeposition in a single bath two electrode system with the use of anodic alumina membrane. The prepared AgNi alloy and pure Ag were characterized with X-ray Diffraction (XRD) for structural confirmation, Scanning Electron Microscopy (SEM) for morphological, and magnetic properties by Vibrating Sample Magnetometer, respectively. The X-ray Diffraction study shows the formation of cubic structure for pure Ag. SEM analysis reveals the double dumbbell morphology for AgNi alloy and spherically agglomeration for pure silver. Hysteresis behaviour from VSM measurement indicates that the AgNi alloy have good ferro-magnetic properties.

  14. IO6490

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA group currentBradleyTableSelling CorpNewCF INDUSTRIES,L? .-I I ,Is II:c*1 ' f. (5

  15. IO2566

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA groupTuba City, Arizona, DisposalFourthNrr-osams ADMIN551 - g 7635U 93 -256566

  16. ag superlens suitable: Topics by E-print Network

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

    Providing habitat for hosts of various diseases such as malaria Bowen, James D. 25 Siemens AG 2009. All rights reserved. Investitionsmanagement Biology and Medicine Websites...

  17. anlagenbau ag o-1140: Topics by E-print Network

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

    of this phenomenon have concentrated on ion Nordlund, Kai 103 Panasonic Electric Works Europe AG panasonic-electric-works.com CCELERATIONSENSORS,IGHTSENSORS0RESSURESENSORS)NFOR...

  18. ag brennelementewerk hanau: Topics by E-print Network

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

    of this phenomenon have concentrated on ion Nordlund, Kai 104 Panasonic Electric Works Europe AG panasonic-electric-works.com CCELERATIONSENSORS,IGHTSENSORS0RESSURESENSORS)NFOR...

  19. METAL MEDIA FILTERS, AG-1 SECTION FI

    SciTech Connect (OSTI)

    Adamson, D.

    2012-05-23T23:59:59.000Z

    One application of metal media filters is in various nuclear air cleaning processes including applications for protecting workers, the public and the environment from hazardous and radioactive particles. To support this application the development of the ASME AG-1 FI Standard on Metal Media has been under way for more than ten years. Development of the proposed section has required resolving several difficult issues associated with operating conditions (media velocity, pressure drop, etc.), qualification testing, and quality acceptance testing. Performance characteristics of metal media are dramatically different than the glass fiber media with respect to parameters like differential pressures, operating temperatures, media strength, etc. These differences make existing data for a glass fiber media inadequate for qualifying a metal media filter for AG-1. In the past much work has been conducted on metal media filters at facilities such as Lawrence Livermore National Laboratory (LLNL) and Savannah River National Laboratory (SRNL) to qualify the media as High Efficiency Particulate Air (HEPA) Filters. Particle retention testing has been conducted at Oak Ridge Filter Test Facility and at Air Techniques International (ATI) to prove that the metal media meets or exceeds the 99.97% particle retention required for a HEPA Filter. Even with his testing, data was lacking to complete an AG-1 FI Standard on metal media. With funding secured by Mississippi State University (MSU) from National Nuclear Security Administration (NNSA), a research test stand is being designed and fabricated at MSU's Institute for Clean Energy Technology (ICET) Facility to obtain qualification data on metal media. This in turn will support required data needed for the FI Standard. The paper will discuss in detail how the test stand at MSU will obtain the necessary data to complete the FI Standard.

  20. Modelling of the AGS using Zgoubi - Status

    SciTech Connect (OSTI)

    Meot F.; Ahrens, L.; Dutheil, Y.; Glenn, J.; Huang, H.; Roser, T.; Schoefer, V.; Tsoupas, N.

    2012-05-20T23:59:59.000Z

    This paper summarizes the progress achieved so far, and discusses various outcomes, regarding the development of a model of the Alternating Gradient Synchrotron at the RHIC collider. The model, based on stepwise ray-tracing methods, includes beam and polarization dynamics. This is an on-going work, and a follow-on of code developments and particle and spin dynamics simulations that have been subject to earlier publications at IPAC and PAC [1, 2, 3]. A companion paper [4] gives additional informations, regarding the use of the measured magnetic field maps of the AGS main magnets.

  1. EOP Biodiesel AG | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluating A Potential MicrohydroDistrict ofDongjinDynetek42EOP Biodiesel AG Jump to:

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    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model, click here.TelluricPower InternationalChuichu,CimaCiris EnergyBocaAG Place: Bad

  4. Seeger Engineering AG | Open Energy Information

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  7. AG Land 5 | Open Energy Information

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  8. Ag Fuels Ltd | Open Energy Information

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  9. AgRefresh | Open Energy Information

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  10. SMA Technologie AG | Open Energy Information

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    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty Edit with form HistoryRistma AG Jump to:Energy InformationSSITASK EnergySMA

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    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are8COaBulkTransmissionSitingProcess.pdfGetecGtel Jump to:Pennsylvania:County,Ohio: Energy ResourcesHuberand Suhner AG

  12. Denker Wulf AG | Open Energy Information

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  13. SolarWorld AG | Open Energy Information

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  14. Centrosolar Group AG | Open Energy Information

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    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model,DOEHazel Crest, Illinois:Edinburgh University aka Wave PowerEdisun Power AG Jump

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  18. Komax Holding AG | Open Energy Information

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  19. SolarTec AG | Open Energy Information

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  20. Sunseeker Energy Holding AG | Open Energy Information

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  1. Cross Capital AG | Open Energy Information

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  2. Bos ten AG | Open Energy Information

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  3. Roth Rau AG | Open Energy Information

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  6. Los Alamos National Laboratory Associate Directorate for Theory, Simulation, and Computation (ADTSC) LA-UR 13-2083982 Parallel Log Structured File System (PLFS)

    E-Print Network [OSTI]

    Cooperative Research and Development Agreement (CRADA) to further enhance, design, build, test, and deploy, and metadata performance of our I/O workloads. As part of the LANL umbrella CRADA with EMC Corporation, LANL

  7. Scientific Data Services -- A High-Performance I/O System with Array Semantics

    SciTech Connect (OSTI)

    Wu, Kesheng; Byna, Surendra; Rotem, Doron; Shoshani, Arie

    2011-09-21T23:59:59.000Z

    As high-performance computing approaches exascale, the existing I/O system design is having trouble keeping pace in both performance and scalability. We propose to address this challenge by adopting database principles and techniques in parallel I/O systems. First, we propose to adopt an array data model because many scientific applications represent their data in arrays. This strategy follows a cardinal principle from database research, which separates the logical view from the physical layout of data. This high-level data model gives the underlying implementation more freedom to optimize the physical layout and to choose the most effective way of accessing the data. For example, knowing that a set of write operations is working on a single multi-dimensional array makes it possible to keep the subarrays in a log structure during the write operations and reassemble them later into another physical layout as resources permit. While maintaining the high-level view, the storage system could compress the user data to reduce the physical storage requirement, collocate data records that are frequently used together, or replicate data to increase availability and fault-tolerance. Additionally, the system could generate secondary data structures such as database indexes and summary statistics. We expect the proposed Scientific Data Services approach to create a live storage system that dynamically adjusts to user demands and evolves with the massively parallel storage hardware.

  8. Proc. the 24th Annual ACM Symposium on Applied Computing, March 2009. DARAW: A New Write Buffer to Improve Parallel I/O Energy-Efficiency

    E-Print Network [OSTI]

    Qin, Xiao

    on the reliability of parallel I/O systems. Third, numerous power-state transitions impose significant energy, energy dissipation in the storage system may not necessarily be reduced. This is due the fact that power data centers today employ huge quantities of I/O systems, which consume a large amount of energy. Most

  9. Ag/AgBr/g-C{sub 3}N{sub 4}: A highly efficient and stable composite photocatalyst for degradation of organic contaminants under visible light

    SciTech Connect (OSTI)

    Cao, Jing, E-mail: caojing@mail.ipc.ac.cn [College of Chemistry and Materials Science, Huaibei Normal University, Huaibei 235000, Anhui (China); State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100 (China); Zhao, Yijie; Lin, Haili; Xu, Benyan [College of Chemistry and Materials Science, Huaibei Normal University, Huaibei 235000, Anhui (China); Chen, Shifu, E-mail: chshifu@chnu.edu.cn [College of Chemistry and Materials Science, Huaibei Normal University, Huaibei 235000, Anhui (China)

    2013-10-15T23:59:59.000Z

    Graphical abstract: Ag/AgBr/g-C{sub 3}N{sub 4} composite photocatalysts displayed excellent photocatalytic activities on the degradation of methyl orange (MO) under visible light. The improved photocatalytic performance and stability of Ag/AgBr/g-C{sub 3}N{sub 4} originated from the synergetic effects of AgBr/g-C{sub 3}N{sub 4} interface and metallic Ag nanoparticles. O{sub 2}?, one of the reactive species, was responsible for the photodegradation of MO compared to H+ and OH. - Highlights: Novel Ag/AgBr/g-C{sub 3}N{sub 4} composite photocatalyst was reported. Ag/AgBr/g-C{sub 3}N{sub 4} had novel energy band combination between AgBr and g-C{sub 3}N{sub 4}. Synergetic effects of AgBr/g-C{sub 3}N{sub 4} interface and metallic Ag nanoparticles. Electron trapping role of metallic Ag dominated the stability of Ag/AgBr/g-C{sub 3}N{sub 4}. - Abstract: Novel Ag/AgBr/g-C{sub 3}N{sub 4} composite photocatalysts were constructed via depositionprecipitation method and extensively characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM) and UVvis diffuse reflectance spectroscopy (DRS). Under visible light (? > 420 nm), Ag/AgBr/g-C{sub 3}N{sub 4} composite photocatalysts displayed much higher photocatalytic activities than those of Ag/AgBr and g-C{sub 3}N{sub 4} for degradation of methyl orange (MO). 50% Ag/AgBr/g-C{sub 3}N{sub 4} presented the best photocatalytic performance, which was mainly attributed to the synergistic effects of AgBr/g-C{sub 3}N{sub 4} interface and the in situ metallic Ag nanoparticles for efficiently separating electronhole pairs. Furthermore, Ag/AgBr/g-C{sub 3}N{sub 4} remained good photocatalytic activity through 5 times of cycle experiments. Additionally, the radical scavengers experiment indicated that O{sub 2}{sup ?} was the main reactive species for the MO degradation under visible light.

  10. EXCURSION: enterprises in our region "Centrotherm photovoltaics AG"

    E-Print Network [OSTI]

    Pfeifer, Holger

    EXCURSION: enterprises in our region "Centrotherm photovoltaics AG" 4th of November 2009 Invitation of a German enterprise called centrotherm photovoltaics AG in Blaubeuren. They are providers of technology and services for the photovoltaics industry. For organizational reasons we ask you to register for this visit

  11. Microwave-assisted solvothermal synthesis of flower-like Ag/AgBr/BiOBr microspheres and their high efficient photocatalytic degradation for p-nitrophenol

    SciTech Connect (OSTI)

    Li, Tingting, E-mail: tingtingli1983@hotmail.com [Department of Chemistry and Chemical Engineering, Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Changsha 410082 (China); State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082 (China); Department of Environment and Chemical Engineering, Key Laboratory of Jiangxi Province for Ecological Diagnosis, Remediation and Pollution Control, Nanchang Hangkong University, Nanchang 330063 (China); Luo, Shenglian, E-mail: sllou@hnu.edu.cn [Department of Chemistry and Chemical Engineering, Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Changsha 410082 (China); State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082 (China); Department of Environment and Chemical Engineering, Key Laboratory of Jiangxi Province for Ecological Diagnosis, Remediation and Pollution Control, Nanchang Hangkong University, Nanchang 330063 (China); Yang, Lixia [Department of Environment and Chemical Engineering, Key Laboratory of Jiangxi Province for Ecological Diagnosis, Remediation and Pollution Control, Nanchang Hangkong University, Nanchang 330063 (China)

    2013-10-15T23:59:59.000Z

    Flower-like Ag/AgBr/BiOBr microspheres were successfully fabricated by the approach of microwave-assisted solvothermal and in situ photo-assisted reduction. A reactive ionic liquid 1-hexadecyl-3-methylimidazolium bromide ([C{sub 16}mim]Br) was employed as Br source in the presence of surfactant polyvinylpyrrolidone (PVP). The photocatalytic activity of Ag/AgBr/BiOBr towards the decomposition of p-nitrophenol under visible light irradiation was evaluated. The results indicated that Ag/AgBr/BiOBr showed enhanced photocatalytic activity towards p-nitrophenol, comparing with P25, BiOBr and Ag/AgBr. More than 96% of p-nitrophenol was decomposed in 3.5 h under visible-light irradation. The excellent photocatalytic activity of flower-like Ag/AgBr/BiOBr microspheres can be attributed to the large specific surface area, strong visible-light absorption, suitable energy band structure and surface plasmon resonance effect of Ag nanoparticles. The possible photocatalytic mechanism was proposed based on the active species test and band gap structure analysis. - Graphical abstract: The photocatalytic reaction mechanisms of the as-prepared Ag/AgBr/BiOBr. Display Omitted - Highlights: Successful synthesis of flower-like Ag/AgBr/BiOBr microspheres. The Ag/AgBr/BiOBr showed much higher photocatalytic activity towards p-nitrophenol as compared to BiOBr and Ag/AgBr. The reasons for the excellent photocatalytic activity are the large specific surface area, strong visible-light absorption and surface plasmon resonance effect of Ag nanoparticles. The O{sub 2}{sup ?}, Br{sup 0} and photogenerated h{sup +} play key roles in the photocatalytic degradation process.

  12. SESSION IO: Analogto-Digital Converters TPM 10.6: An18b lops Self-calibratingADC

    E-Print Network [OSTI]

    Lee, Hae-Seung "Harry"

    on this chip includes calibration pattern generaton, a successive approx- imation register (SAR), elementsSESSION IO: Analogto-Digital Converters TPM 10.6: An18b lops Self-calibratingADC Gerald, Miller Wilmington, MA AUTO-CALIBRATION has been used in monolithic ADCs to extend the limits of accuracy

  13. Universities CoUnCil on Water resoUrCes JoUrnal of Contemporary Water researCh & edUCation

    E-Print Network [OSTI]

    Wolf, Aaron

    than one billion people already lack access to safe drinking water (Gleick 1999; Loftus 2009) and more than 2.4 billion lack access to sanitation worldwide (World Health Organization 2000). Globally, waterUniversities CoUnCil on Water resoUrCes JoUrnal of Contemporary Water researCh & edUCation iss

  14. pci)o>-,G)dII0U)-r1C() F1r1-t)flciO

    E-Print Network [OSTI]

    Gudmundsson, Jon Steinar

    ci 0`-1- ci4o0ci) 0OOci) (1 ti2-pbQj pIcFG)0-- o)fli pci)o>-,G)·dII0U)-r1C() -I F1r1-t)flciO tcg0P1-` P01.4 cclcE-cii'i+1 c'j0-1s--.$-i p 4 -ri-i-)lOci-1·Hli) !.(DCIS 00)OrI -1'ici.);)cjo(1) ciWd`c.4 ci))ci 4)·,-10'p4-.'3)crp:pi s_ri P4Ilc (i) ci 0 #12;cI1r''r') TC' The literature revealed that paraffin

  15. ag samples show: Topics by E-print Network

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

    in a low density region sim 30-300 AU from the central binary. Scott J. Kenyon; Daniel Proga; Charles D. Keyes 2001-03-26 29 Ag Communications Communications and Media...

  16. AG3 srl (spin off universitario) Anno di costituzione: 2011

    E-Print Network [OSTI]

    Sproston, Jeremy

    geologia, della geofisica e della geotermia. AG3 vuole dare una risposta alle nuove esigenze energetiche, nelle georisorse, nella geochimica, nella la geofisica, nel remote sensing, nella perforazione del

  17. Polarized proton acceleration at the BNL AGS, 1988

    SciTech Connect (OSTI)

    Ahrens, L.

    1988-01-01T23:59:59.000Z

    The present status of the polarized proton acceleration at the Brookhaven AGS is described. Some details regarding the tune-up and performance during the December 1987-January 1988 physics run are given. 2 refs., 4 figs.

  18. ag films grown: Topics by E-print Network

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

    conduction-band states of NiO 100 thin films grown onto Ag 100 have charac- terized NiO monocrystalline thin films has shown up both onto insulating i.e., MgO, Ref. 21 Marcon,...

  19. ag thin films: Topics by E-print Network

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

    MgO, Ref. 21 Marcon, Marco 2 Multi-level surface enhanced Raman scattering using AgOx thin film Physics Websites Summary: by applying laser-direct writing (LDW) technique on...

  20. ag fe ni: Topics by E-print Network

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

    conduction-band states of NiO 100 thin films grown onto Ag 100 have charac- terized NiO monocrystalline thin films has shown up both onto insulating i.e., MgO, Ref. 21 Marcon,...

  1. Commissioning of the new AGS MMPS transformers

    SciTech Connect (OSTI)

    Bajon,E.; Badea, V. S.; Bannon, M.; Bonati, R.; Marneris, I. M.; Porqueddu, r.; Roser, T.; Sandberg, J.; Savatteri, S.

    2009-05-04T23:59:59.000Z

    The Brookhaven AGS Main Magnet Power Supply (MMPS) is a thyristor control supply rated at 5500 Amps. +/-9000 Volts. The peak magnet power is 50 MWatts. The power supply is fed from a motor/generator manufactured by Siemens. During rectify and invert operation the P Bank power supplies are used. During the flattops the F Bank power supplies are used. The P Bank power supplies are fed from two 23 MVA transformers and the F Bank power supplies are fed from two 5.3 MYA transformers. The fundamental frequency of the F Bank power supplies is 1440 Hz, however the fundamental frequency of the P banks was 720 Hz. It was very important to reduce the ripple during rectify to improve polarized proton operations. For this reason and also because the original transformers were 45 years old we replaced these transformers with new ones and we made the fundamental frequency of both P and F banks 1440 Hz. This paper will highlight the major hurdles that were involved during the installation of the new transformers. It will present waveforms while running at different power levels up to 6MW full load. It will show the transition from the F-Bank power supplies to the P-Banks and also show the improvements in ripple made on the P-Bank power supplies.

  2. Silver delafossite nitride, AgTaN{sub 2}?

    SciTech Connect (OSTI)

    Miura, Akira [Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen (Germany); Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853 (United States); Lowe, Michael; Leonard, Brian M.; Subban, Chinmayee V. [Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853 (United States); Masubuchi, Yuji; Kikkawa, Shinichi [Graduate School of Engineering, Hokkaido University, N13W8, Kita-ku Sapporo 060-8628 (Japan); Dronskowski, Richard [Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen (Germany); Hennig, Richard G. [Department of Materials Science and Engineering, Cornell University, Ithaca, New York 14853 (United States); Abruna, Hector D. [Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853 (United States); DiSalvo, Francis J., E-mail: fjd3@cornell.ed [Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853 (United States)

    2011-01-15T23:59:59.000Z

    A new silver nitride, AgTaN{sub 2}, was synthesized from NaTaN{sub 2} by a cation-exchange reaction, using a AgNO{sub 3}-NH{sub 4}NO{sub 3} flux at 175 {sup o}C. Its crystal structure type is delafossite (R3-bar m) with hexagonal lattice parameters of a=3.141(3) A, c=18.81(2) A, in which silver is linearly coordinated to nitrogen. Energy dispersive X-ray analysis and combustion nitrogen/oxygen analysis gave a composition with atomic ratios of Ag:Ta:N:O as 1.0:1.2(1):2.1(1):0.77(4), which is somewhat Ta rich and indicates some oxide formation. The X-ray photoelectron spectroscopy analysis showed a Ta- and O-rich surface and transmission electron microscope observation exhibited aggregates of ca. 4-5 nm-sized particles on the surface, which are probably related to the composition deviation from a AgTaN{sub 2}. The lattice parameters of stoichiometric AgTaN{sub 2} calculated by density functional theory agree with the experimental ones, but the possibility of some oxygen incorporation and/or silver deficiency is not precluded. -- Graphical abstract: A delafossite silver nitride, AgTaN{sub 2}, was synthesized from NaTaN{sub 2} by a cation-exchange reaction using a AgNO{sub 3}-NH{sub 4}NO{sub 3} flux. It contains N-Ag-N linear bonding. Display Omitted

  3. International Journal of Artificial Intelligence in Education 13 (2003) 35-78 1560-4292/03/$8.00 ,, 2003 -IOS Press. All rights reserved

    E-Print Network [OSTI]

    Boyer, Edmond

    -4292/03/$8.00 ,, 2003 - IOS Press. All rights reserved STyLE-OLM: Interactive Open Learner Modelling Vania Dimitrova ­ a system called STyLE-OLM. The results from the study demonstrate potential benefits of the method

  4. notienefronteras Impacto del cambIo clImtIco en la comunIdad andIna

    E-Print Network [OSTI]

    El Cambio Climático notienefronteras Impacto del cambIo clImátIco en la comunIdad andIna #12 Ministerio de Medio Ambiente de España y la Agencia Española de Cooperación Internacional para el Desarrollo, María Teresa Cigarán y David Vásquez, en el marco de la Agenda Ambiental Andina. Coordinación técnica

  5. EDDY CURRENT EFFECT OF THE BNL-AGS VACUUM CHAMBER ON THE OPTICS OF THE BNL-AGS SYNCHROTRON.

    SciTech Connect (OSTI)

    TSOUPAS,N.; AHRENS,L.; BROWN,K.A.; GLENN,J.W.; GARDNER,K.

    1999-03-29T23:59:59.000Z

    During the acceleration cycle of the AGS synchrotron, eddy currents are generated within the walls of the vacuum chambers of the AGS main magnets. The vacuum chambers have elliptical cross section, are made of inconel material with a wall thickness of 2 mm and are placed within the gap of the combined-function main magnets of the AGS synchrotron. The generation of the eddy currents in the walls of the vacuum chambers, creates various magnetic multipoles, which affect the optics of the AGS machine. In this report these magnetic multipoles are calculated for various time interval starting at the acceleration cycle, where the magnetic field of the main magnet is {approx}0.1 T, and ending before the beam extraction process, where the magnetic field of the main magnet is almost constant at {approx}1.1 T. The calculations show that the magnetic multipoles generated by the eddy-currents affect the optics of the AGS synchrotron during the acceleration cycle and in particular at low magnetic fields of the main magnet. Their effect is too weak to affect the optics of the AGS machine during beam extraction at the nominal energies.

  6. Optimizing I/O Forwarding Techniques for Extreme-Scale Event Tracing

    SciTech Connect (OSTI)

    Ilsche, Thomas [Technische Universitat Dresden] [Technische Universitat Dresden; Schuchart, Joseph [Technische Universitat Dresden] [Technische Universitat Dresden; Cope, Joseph [Argonne National Laboratory (ANL)] [Argonne National Laboratory (ANL); Kimpe, Dries [Argonne National Laboratory (ANL)] [Argonne National Laboratory (ANL); Jones, Terry R [ORNL] [ORNL; Knuepfer, Andreas [Technische Universitat Dresden] [Technische Universitat Dresden; Iskra, Kamil [Argonne National Laboratory (ANL)] [Argonne National Laboratory (ANL); Ross, Robert [Argonne National Laboratory (ANL)] [Argonne National Laboratory (ANL); Nagel, Wolfgang E. [Technische Universitat Dresden] [Technische Universitat Dresden; Poole, Stephen W [ORNL] [ORNL

    2014-01-01T23:59:59.000Z

    Programming development tools are a vital com- ponent for understanding the behavior of parallel applica- tions. Event tracing is a principal ingredient to these tools, but new and serious challenges place event tracing at risk on extreme-scale machines. As the quantity of captured events increases with concurrency, the additional data can over- load the parallel file system and perturb the application be- ing observed. In this work we present a solution for event tracing on extreme-scale machines. We enhance an I/O for- warding software layer to aggregate and reorganize log data prior to writing to the storage system, significantly reduc- ing the burden on the underlying file system. Furthermore, we introduce a sophisticated write buffering capability to limit the impact. To validate the approach, we employ the Vampir tracing toolset using these new capabilities. Our re- sults demonstrate that the approach increases the maximum traced application size by a factor of 5x to more than 200,000 processes.

  7. 1010 IEEE JOURNAL OF SOLID-STATE CIRCUITS, VOL. 43, NO. 4, APRIL 2008 A Scalable 515 Gbps, 1475 mW Low-Power I/O

    E-Print Network [OSTI]

    Palermo, Sam

    1010 IEEE JOURNAL OF SOLID-STATE CIRCUITS, VOL. 43, NO. 4, APRIL 2008 A Scalable 515 Gbps, 1475 mW Low-Power I/O Transceiver in 65 nm CMOS Ganesh Balamurugan, Member, IEEE, Joseph Kennedy, Member, IEEE'Mahony, Bryan Casper, and Randy Mooney, Member, IEEE Abstract--We present a scalable low-power I/O transceiver

  8. UPGRADING THE AGS TO 1 MW PROTON BEAM POWER M.J. Brennan, I. Marneris, T. Roser, A.G. Ruggiero, D. Trbojevic, S.Y. Zhang

    E-Print Network [OSTI]

    McDonald, Kirk

    to RHIC. The AGS Booster was built to allow the injection of any species of heavy ion into the AGS. Trbojevic, S.Y. Zhang Brookhaven National Laboratory, UPTON, NY 11973, USA Worked performed under the auspices of the U.S.D.O.E. Abstract The Brookhaven Alternating Gradient Synchrotron (AGS) is a strong

  9. Progress and status of the AGS Booster project

    SciTech Connect (OSTI)

    Weng, W.T. (Brookhaven National Lab., Upton, NY (USA))

    1989-01-01T23:59:59.000Z

    New physics opportunities, such as: rare K-decay, neutrino and heavy ion physics demand that a rapid-cycling high vacuum and high intensity Booster be built for the AGS at Brookhaven National Laboratory. The circumference of the Booster ring is one-quarter that of the AGS. Three modes of operation for various particles are envisioned. For unpolarized protons, four Booster pulses would be injected at a 7.5 Hz repetition rate within a 400 ms flat bottom of the AGS, enabling the present 1.5 {times} 10{sup 13} ppp to be increased to 6 {times} 10{sup 13} ppp. The protons would be accelerated to 1.5 GeV although the bending capability provided for heavy ions would eventually allow protons to be accelerated to 2.5 GeV. For heavy ions the rep rates is about 1 Hz and only one pulse would be injected into the AGS. For polarized protons 20 or so pulses can be stored in the Booster ring before injecting them into the AGS. Provisions for mixed modes of operation into a super cycle has been provided for future needs. In this paper, the lattice design and magnet characteristics will be briefly reviewed and major design issues will be discussed and design choices explained. Finally, the construction status and schedule will be presented. 9 refs., 3 figs.

  10. Evidence for hybrid surface metallic band in (4??4) silicene on Ag(111)

    SciTech Connect (OSTI)

    Tsoutsou, D., E-mail: dtsoutsou@ims.demokritos.gr; Xenogiannopoulou, E.; Golias, E.; Tsipas, P.; Dimoulas, A. [National Center for Scientific Research Demokritos, 15310 Athens (Greece)] [National Center for Scientific Research Demokritos, 15310 Athens (Greece)

    2013-12-02T23:59:59.000Z

    The electronic band structure of monolayer (4??4) silicene on Ag(111) is imaged by angle resolved photoelectron spectroscopy. A dominant hybrid surface metallic band is observed to be located near the bulk Ag sp-band which is also faintly visible. The two-dimensional character of the hybrid band has been distinguished against the bulk character of the Ag(111) sp-band by means of photon energy dependence experiments. The surface band exhibits a steep linear dispersion around the K{sup }{sub Ag} point and has a saddle point near the M{sup }{sub Ag} point of Ag(111) resembling the ?-band dispersion in graphene.

  11. Operated by Los Alamos National Security, LLC for the U.S. Department of Energy's NNSA U N C L A S S I F I E D LA-UR-13-26641

    E-Print Network [OSTI]

    Stamatakis, Alexandros

    Operated by Los Alamos National Security, LLC for the U.S. Department of Energy's NNSA U N C L.S. Department of Energy's NNSA U N C L A S S I F I E D LA-UR-13-26641 Motivation n Supercomputers face.S. Department of Energy's NNSA U N C L A S S I F I E D LA-UR-13-26641 Motivation (cont.) n Aggressive voltage

  12. High intensity proton acceleration at the Brookhaven AGS -- An update

    SciTech Connect (OSTI)

    Ahrens, L.; Alessi, J.; Blaskiewicz, M. [Brookhaven National Lab., Upton, NY (United States). AGS Dept.] [and others

    1997-07-01T23:59:59.000Z

    The AGS accelerator complex is into its third year of 60+ {times} 10{sup 12} (teraproton = Tp) per cycle operation. The hardware making up the complex as configured in 1997 is briefly mentioned. The present level of accelerator performance is discussed. This includes beam transfer efficiencies at each step in the acceleration process, i.e. losses; which are a serious issue at this intensity level. Progress made in understanding beam behavior at the Linac-to-Booster (LtB) injection, at the Booster-to-AGS (BtA) transfer as well as across the 450 ms AGS accumulation porch is presented. The state of transition crossing, with the gamma-tr jump is described. Coherent effects including those driven by space charge are important at all of these steps.

  13. Analysis of resonance-driving imperfections in the AGS Booster

    SciTech Connect (OSTI)

    Gardner, C.; Shoji, Y.; Danby, G.; Glenn, J.W.; Jackson, G.J.; Soukas, A.; van Asselt, W.; Whalen, C.

    1994-08-01T23:59:59.000Z

    At the design intensity of 1.5 {times} 10{sup 13} ppp, the space charge tune shift in the AGS Booster at injection has been estimated to be about 0.35. The beam tunes are therefore spread over many lower order resonance lines and the associated stopbands must be corrected in order to minimize the amplitude growth due to resonance excitation. This requires proper compensation of the resonance-driving harmonics which result from random magnetic field errors. The observation and correction of second and third order resonance stopbands in the AGS Booster is reviewed, and an analysis of magnetic field imperfections based on the required corrections is given.

  14. Observation and correction of resonance stopbands in the AGS Booster

    SciTech Connect (OSTI)

    Gardner, C.; Shoji, Y.; Ahrens, L.; Glenn, J.W.; Lee, Y.Y.; Roser, T.; Soukas, A.; van Asselt, W.; Weng, W.T.

    1993-06-01T23:59:59.000Z

    At the design intensity of 1.5 {times} 10{sup 13} ppp, the space charge tune shift in the AGS Booster at injection has been estimated to be about 0.35. Therefore, the beam is spread over may lower order resonance lines and the stopbands have to be corrected to minimize the amplitude growth by proper compensation of the driving harmonics resulting from random errors. The observation and correction of second and third order resonance stopbands in the AGS Booster, and the establishment of a favorable operating point at high intensity are discussed.

  15. AGS to RHIC transfer line: Design and commissioning

    SciTech Connect (OSTI)

    MacKay, W.W; Ahrens, L.; Bennan, M.; Brown, K. [and others

    1996-09-01T23:59:59.000Z

    In the fall of 1995, we successfully completed a major milestone in the RHIC (Relativistic Heavy Ion Collider) project: the first beam test of the AGS (Alternating Gradient Synchrotron) to RHIC (ATR) transfer line. The ATR serves as a test bed for the new RHIC control system. This transfer line is highly instrumented, with several types of instrumentation for characterizing the extracted beam from AGS and for matching the beam into RHIC. We describe the design and performance of ATR with gold ions with an eye to reaching the design criteria for RHIC operation, both in beam quality and controls.

  16. Surface spin flip probability of mesoscopic Ag wires.

    SciTech Connect (OSTI)

    Mihajlovic, G.; Pearson, J. E.; Bader, S. D.; Hoffmann, A.

    2010-06-08T23:59:59.000Z

    Spin relaxation in mesoscopic Ag wires in the diffusive transport regime is studied via nonlocal spin valve and Hanle effect measurements performed on Permalloy/Ag lateral spin valves. The ratio between momentum and spin relaxation times is not constant at low temperatures. This can be explained with the Elliott-Yafet spin relaxation mechanism by considering the momentum surface relaxation time as being temperature dependent. We present a model to separately determine spin flip probabilities for phonon, impurity and surface scattering and find that the spin flip probability is highest for surface scattering.

  17. Level Structure of 103Ag at high spins

    E-Print Network [OSTI]

    S. Ray; N. S. Pattabiraman; Krishichayan; A. Chakraborty; S. Mukhopadhyay; S. S. Ghugre; S. N. Chintalapudi; A. K. Sinha; U. Garg; S. Zhu; B. Kharraja; D. Almehed

    2007-12-07T23:59:59.000Z

    High spin states in $^{103}$Ag were investigated with the Gammasphere array, using the $^{72}$Ge($^{35}$Cl,$2p2n$)$^{103}$Ag reaction at an incident beam energy of 135 MeV. A $\\Delta J$=1 sequence with predominantly magnetic transitions and two nearly-degenerate $\\Delta J=1$ doublet bands have been observed. The dipole band shows a decreasing trend in the $B(M1)$ strength as function of spin, a well established feature of magnetic bands. The nearly-degenerate band structures satisfy the three experimental signatures of chirality in the nuclei; however microscopic calculations are indicative of a magnetic phenomenon

  18. Pb-free Sn-Ag-Cu ternary eutectic solder

    DOE Patents [OSTI]

    Anderson, I.E.; Yost, F.G.; Smith, J.F.; Miller, C.M.; Terpstra, R.L.

    1996-06-18T23:59:59.000Z

    A Pb-free solder includes a ternary eutectic composition consisting essentially of about 93.6 weight % Sn-about 4.7 weight % Ag-about 1.7 weight % Cu having a eutectic melting temperature of about 217 C and variants of the ternary composition wherein the relative concentrations of Sn, Ag, and Cu deviate from the ternary eutectic composition to provide a controlled melting temperature range (liquid-solid ``mushy`` zone) relative to the eutectic melting temperature (e.g. up to 15 C above the eutectic melting temperature). 5 figs.

  19. AgFe Management Ltd | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-fTriWildcat 1AMEE JumpAeroWind Inc.Information AfluenteAg Fuels LtdAgFe

  20. Schnell Z ndstrahlmotoren AG Co KG | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty Edit with form HistoryRistma AG Jump638324°,Schnell Z ndstrahlmotoren AG Co KG Jump

  1. PD Dr. Martin Stetter, Siemens AG 1 Neuronale Verfahren zur Regression

    E-Print Network [OSTI]

    Popeea, Corneliu - Chair for Foundations of Software Reliability and Theoretical Computer Science

    PD Dr. Martin Stetter, Siemens AG 1 Neuronale Verfahren zur Regression Lineares Modell Vom: Optimierungsverfahren #12;PD Dr. Martin Stetter, Siemens AG 2 Optimierung konvexer Funktionen Hufiges Problem bei

  2. The Synthesis of Ag-Doped Mesoporous TiO2 . | EMSL

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

    TiO2 . The Synthesis of Ag-Doped Mesoporous TiO2 . Abstract: Ag-doped mesoporous titanium oxide was prepared using non-ionic surfactants and easily handled titanium...

  3. High-temperature internal oxidation of Ag/1.2at.% Mg and Ag/0.25at.% Mg-0.25at.% Ni.

    SciTech Connect (OSTI)

    Balachandran, U.; Goretta, K. C.; McNallan, M. J.; Park, J.-H.; Prorok, B. C.

    1999-09-08T23:59:59.000Z

    High-temperature oxygen diffusion and internal oxidation in Ag, Ag/1.2 at.% Mg (Ag-Mg), and Ag/0.25 at.% Mg-0.25 at.% Ni (Ag-Mg-Ni) have been studied, mostly in air and 8% O{sub 2}, at 450-835 C. The focus of the studies was on thermogravimetric analysis, microhardness tests, and optical and electron microscopy observations of grain growth and its inhibition by oxidation. The internal oxidation of both alloys exhibited nearly identical activation energies (0.81 eV for Ag-Mg and 0.83 eV for Ag-Mg-Ni) and rate constants. The maximum O content of both alloys was superstoichiometric (e.g., O/Mg > 1.0) and the maximum O/Mg ratios were higher at lower temperatures than at higher temperatures (e.g., 1.25 at 500 C and 1.05 at 800 C). Diffusion of O in pure Ag was {approx}60 times faster at 825 C and {approx}400 times faster at 500 C than internal oxidation of either of the Ag alloys. Grain growth of both alloys and of the Ag was quantified between 450-800 C and related to internal oxidation.

  4. Runtime System for I/O Staging in Support of In-Situ Processing of Extreme Scale Data

    SciTech Connect (OSTI)

    Schwan, Karsten [Georgia Institute of Technology

    2013-11-01T23:59:59.000Z

    Our research in this project focused on creating and evaluating an I/O infrastructure and tools for extreme-scale applications and machines so that scientists can reduce their time to discovery at small cost in machine resources and consequent power consumption. We wanted to provide tools that are highly scalable, portable, and easy-to-use, so that scientists can gain control of their science, and concentrate on producing important scientific discovery in their own domain. Accelerating the rate of insight and scientific productivity, therefore, demands new solutions to managing the avalanche of data expected at extreme scale.

  5. Characterization of the antiferromagnetism in Ag(pyz)2(S2O8) with a two-dimensional square lattice of Ag 2+ ions (Ag=silver, Pyz-pyrdzine, S2O8=sulfate)

    SciTech Connect (OSTI)

    Singleton, John [Los Alamos National Laboratory; Mc Donald, R [Los Alamos National Laboratory; Sengupta, P [Los Alamos National Laboratory; Cox, S [Los Alamos National Laboratory; Manson, J [E WASHINGTON U; Southerland, H [E WASHINGTON U; Warter, M [E WASHINGTON U; Stone, K [STATE UNIV OF NY; Stephens, P [STATE UNIV OF NY; Lancaster, T [OXFORD U; Steele, A [OXFORD U; Blundell, S [OXFORD U; Baker, P [OXFORD U; Pratt, F [RUTHERFORD-APPLETON LAB; Lee, C [NCSU; Whangbo, M [NCSU

    2009-01-01T23:59:59.000Z

    X-ray powder diffraction and magnetic susceptibility measurements show that Ag(pyz){sub 2}(S{sub 2}O{sub 8}) consists of 2D square nets of Ag{sup 2+} ions resulting from the corner-sharing of axially elongated AgN{sub 4}O{sub 2} octahedra and exhibits characteristic 2D antiferromagnetism. Nevertheless, {mu}{sup +}Sr measurements indicate that Ag(pyz){sub 2}(S{sub 2}O{sub 8}) undergoes 3D magnetic ordering below 7.8(3) K.

  6. Beam Energy Evolution of HBT Systematics at the AGS

    E-Print Network [OSTI]

    M. A. Lisa; E895 Collaboration

    2000-02-13T23:59:59.000Z

    We present preliminary results of the first pion interferometry (HBT) excitation function at intermediate AGS energies. The beam energy evolution of the correlations' dependence on mT, centrality, and emission angle with respect to the reaction plane are discussed. Comparisons with predictions of the RQMD cascade model are made.

  7. Acceleration of heavy ions in the AGS and CBA

    SciTech Connect (OSTI)

    Barton, M.Q.

    1983-01-01T23:59:59.000Z

    A plan has been developed to inject ion beams from the Brookhaven Tandem or a cyclotron added to the Tandem into the AGS. This beam could then be injected into a relativistic heavy ion collider. The availability of many CBA components adds to the attractiveness of this proposal.

  8. Outcomes/Impacts Our Ag Agent established a monitoring system

    E-Print Network [OSTI]

    Florida, University of

    Outcomes/Impacts Our Ag Agent established a monitoring system and educational outreach to area farms to track and manage an emerging insect threat to county berry crops. As a result of County preservation, nutrition and wellness as well as energy and housing and specific programs to meet the needs

  9. ImpactsofLarge Dams:agLobaL

    E-Print Network [OSTI]

    Chaudhuri, Sanjay

    #12;ImpactsofLarge Dams:agLobaL assessment Editors Cecilia Tortajada, Dogan Altinbilek, Asit K of the most controversial issues of the water sector in recent years has been the impacts of large dams and environmental costs of large dams far exceed their benefits, and that the era of construction of large dams

  10. AGS Experiment E951 An R&D Program for Targetry and Capture

    E-Print Network [OSTI]

    McDonald, Kirk

    a Argonne National Laboratory, Argonne, IL 60439 b Brookhaven National Laboratory, Upton, NY 11973 c CERN CERN LANSCE Collider AGS Booster PS PSR Proton Energy (GeV) 1624 24 8 24 0.8 p/bunch 5 \\Theta 10 13 1951 ffl Proposal P951 submitted to BNL AGS Division Sept. 1998. ffl Presented to the AGS/RHIC PAC

  11. PD Dr. Martin Stetter, Siemens AG 1 Statistische und neuronale Lernverfahren

    E-Print Network [OSTI]

    Popeea, Corneliu - Chair for Foundations of Software Reliability and Theoretical Computer Science

    PD Dr. Martin Stetter, Siemens AG 1 Statistische und neuronale Lernverfahren Martin Stetter SS 2003, Siemens AG 2 Behandelte Themen 0. ,,Motivation": Lernen in Statistik und Biologie 1-Regression 4. Bayes-Belief-Netze Statistische und neuronale Lernverfahren #12;PD Dr. Martin Stetter, Siemens AG

  12. PD Dr. Martin Stetter, Siemens AG 1 Neuronale Lernverfahren fr Klassifikation

    E-Print Network [OSTI]

    Popeea, Corneliu - Chair for Foundations of Software Reliability and Theoretical Computer Science

    PD Dr. Martin Stetter, Siemens AG 1 Neuronale Lernverfahren fr Klassifikation Das Perceptron #12;PD Dr. Martin Stetter, Siemens AG 2 Das Perceptron Klassifikation: Perceptron Neuronale Struktur- Klassifikationsfehler 1x w )(m x 1)( =m y 0^ =y 1^ +=y 2x #12;PD Dr. Martin Stetter, Siemens AG 3Klassifikation

  13. PD Dr. Martin Stetter, Siemens AG 1 Lernen von Datenmodellen: Fehlerminimierung und Regularisierung

    E-Print Network [OSTI]

    Popeea, Corneliu - Chair for Foundations of Software Reliability and Theoretical Computer Science

    PD Dr. Martin Stetter, Siemens AG 1 Lernen von Datenmodellen: Fehlerminimierung und Regularisierung: Fehlerminimierung #12;PD Dr. Martin Stetter, Siemens AG 2 Maximum-Likelihood und Fehlerminimierung Likelihood: Fehlerfunktionen #12;PD Dr. Martin Stetter, Siemens AG 3 Def. Fehlerfunktion: 0))|(,,( wxfyxl yxyyx ,0),,( =lmit

  14. Siemens AG, CT IC 4, H.-G. Zimmermann1 CORPORATETECHNOLOGY

    E-Print Network [OSTI]

    Schmidhuber, Juergen

    Siemens AG, CT IC 4, H.-G. Zimmermann1 CORPORATETECHNOLOGY System Identification & Forecasting with Advanced Neural Networks Principles, Techniques, Applications Hans Georg Zimmermann Siemens AG Email : Hans_Georg.Zimmermann@siemens.com Siemens AG, CT IC 4, H.-G. Zimmermann2 CORPORATETECHNOLOGY . . . . ! " i ii wxw 0 w1 wn xn x1 Distinct

  15. PD Dr. Martin Stetter, Siemens AG 1 Lernen von Datenmodellen: Approximation

    E-Print Network [OSTI]

    Popeea, Corneliu - Chair for Foundations of Software Reliability and Theoretical Computer Science

    PD Dr. Martin Stetter, Siemens AG 1 Lernen von Datenmodellen: Approximation Bayes`sches Schlieen: Approximation #12;PD Dr. Martin Stetter, Siemens AG 2 Ziel maschinellen Lernens (=statistische Inferenz) Man Datenmodellen: Approximation #12;PD Dr. Martin Stetter, Siemens AG 3 Bayes`sches Schlieen Es gilt, die Daten

  16. PD Dr. Martin Stetter, Siemens AG 1 Statistische und neuronale Lernverfahren

    E-Print Network [OSTI]

    Popeea, Corneliu - Chair for Foundations of Software Reliability and Theoretical Computer Science

    PD Dr. Martin Stetter, Siemens AG 1 Statistische und neuronale Lernverfahren Martin Stetter WS 03, Siemens AG 2 Behandelte Themen 0. ,,Motivation": Lernen in Statistik und Biologie 1-Regression 4. Bayes-Belief-Netze Statistische und neuronale Lernverfahren #12;PD Dr. Martin Stetter, Siemens AG

  17. PD Dr. Martin Stetter, Siemens AG 1 Neuronale Verfahren zur Regression

    E-Print Network [OSTI]

    Popeea, Corneliu - Chair for Foundations of Software Reliability and Theoretical Computer Science

    PD Dr. Martin Stetter, Siemens AG 1 Neuronale Verfahren zur Regression Lineares Modell Vom-Netze Regression #12;PD Dr. Martin Stetter, Siemens AG 2 Das lineare Modell Ausgangspunkt: Lineares Perceptron vorgegeben, werden nicht gelernt #12;PD Dr. Martin Stetter, Siemens AG 3 Geschrieben als Regressionsmodell

  18. Pd and Ag metal-silicate partitioning applied to Earth differentiation and core-mantle exchange

    E-Print Network [OSTI]

    Mcdonough, William F.

    Pd and Ag metal-silicate partitioning applied to Earth differentiation and core-mantle exchange metallic sulfide and liquid silicate under plausible magma ocean conditions constrains potential core 107 Ag content and the origin of observed Pd and Ag mantle abundances. DPd metallic sulfide / silicate

  19. Influence des endiguements et remblais sur l'inondation de la plaine de l'Agly

    E-Print Network [OSTI]

    Boyer, Edmond

    Influence des endiguements et remblais sur l'inondation de la plaine de l'Agly The influence of dikes and embankments on the Agly plain floods par A. Paquier Cemagref Building ofdikes along downstream reach ofAgly River has protected the low plain /rom the more frequent floods, wlùch encourages

  20. Characterization and device performance of (AgCu)(InGa)Se2 absorber layers

    SciTech Connect (OSTI)

    Hanket, Gregory; Boyle, Jonathan H.; Shafarman, William N.

    2009-06-08T23:59:59.000Z

    The study of (AgCu)(InGa)Se2 absorber layers is of interest in that Ag-chalcopyrites exhibit both wider bandgaps and lower melting points than their Cu counterparts. (AgCu)(InGa)Se2 absorber layers were deposited over the composition range 0 < Ag/(Ag+Cu) < 1 and 0.3 < Ga/(In+Ga) < 1.0 using a variety of elemental co-evaporation processes. Films were found to be singlephase over the entire composition range, in contrast to prior studies. Devices with Ga content 0.3 < Ga/(In+Ga) <0.5 tolerated Ag incorporation up to Ag/(Ag+Cu) = 0.5 without appreciable performance loss. Ag-containing films with Ga/(In+Ga) = 0.8 showed improved device characteristics over Cu-only control samples, in particular a 30-40% increase in short-circuit current. An absorber layer with composition Ag/(Ag+Cu) = 0.75 and Ga/(In+Ga) = 0.8 yielded a device with VOC = 890 mV, JSC = 20.5mA/cm2, fill factor = 71.3%, and ? = 13.0%.

  1. Determine Minimum Silver Flake Addition to GCM for Iodine Loaded AgZ

    SciTech Connect (OSTI)

    Garino, Terry J.; Nenoff, Tina M.; Rodriguez, Mark A.

    2014-04-01T23:59:59.000Z

    The minimum amount of silver flake required to prevent loss of I{sub 2} during sintering in air for a SNL Glass Composite Material (GCM) Waste Form containing AgI-MOR (ORNL, 8.7 wt%) was determined to be 1.1 wt% Ag. The final GCM composition prior to sintering was 20 wt% AgI-MOR, 1.1 wt% Ag, and 80 wt% Bi-Si oxide glass. The amount of silver flake needed to suppress iodine loss was determined using thermo gravimetric analysis with mass spectroscopic off-gas analysis. These studies found that the ratio of silver to AgI-MOR required is lower in the presence of the glass than without it. Therefore an additional benefit of the GCM is that it serves to inhibit some iodine loss during processing. Alternatively, heating the AgI-MOR in inert atmosphere instead of air allowed for densified GCM formation without I{sub 2} loss, and no necessity for the addition of Ag. The cause of this behavior is found to be related to the oxidation of the metallic Ag to Ag{sup +} when heated to above ~300{degrees}C in air. Heating rate, iodine loading levels and atmosphere are the important variables that determine AgI migration and results suggest that AgI may be completely incorporated into the mordenite structure by the 550{degrees}C sintering temperature.

  2. Injection and acceleration of Au31+ in the BNL AGS.

    SciTech Connect (OSTI)

    Fischer,W.; Ahrens, L.; Brown, K.; Gardner, C.; Glenn, W.; Huang, H.; Mapes, M.; Smart, L.; Thieberger, P.; Tsoupas, N.; Zhang, S.Y.; Zeno, K.; Omet, C.; Spiller, P.

    2008-06-23T23:59:59.000Z

    Injection and acceleration of ions in a lower charge state reduces space charge effects, and, if further elcctron stripping is needed, may allow elimination of a stripping stage and the associated beam losses. The former is of interest to the accelerators in the GSI FAIR complex, the latter for BNL RHIC collider operation at energies lower than the current injection energy. Lower charge state ions, however, have a higher likelihood of electron stripping which can lead to dynamic pressures rises and subsequent beam losses. We report on experiments in the AGS where Au{sup 31+} ions were injected and accelerated instead of the normally used Au{sup 77+} ions. Beam intensities and the average pressure in the AGS ring are recorded, and compared with calculations for dynamic pressures and beam losses. The experimental results will be used to benchmark the StrahlSim dynamic vacuum code and will be incorporated in the GSI FAIR SIS100 design.

  3. Acceleration of polarized protons in the Brookhaven AGS

    SciTech Connect (OSTI)

    Terwilliger, K.M.; Crabb, D.G.; Krisch, A.D.

    1981-01-01T23:59:59.000Z

    A multi-laboratory-university collaborative project involving Argonne, Brookhaven, Michigan, Rice and Yale is underway to accelerate polarized protons at the AGS. The success of the now turned off 12 GeV/c ZGS polarized beam and the design studies for the AGS made us confident of the feasibility of achieving a polarization of about 60% at 26 GeV/c with an intensity 10/sup 11/ to 10/sup 12/ protons/pulse. Such a beam would be a potential source of polarized protons for ISABELLE. This report gives a brief discussion of the overall project and describes the tests of a prototype of the fast pulsed ferrite quadrupole magnets which will jump the intrinsic depolarizing resonances.

  4. LA-UR-

    Office of Scientific and Technical Information (OSTI)

    using Gaussian process models and compare them to an approach that uses the ensemble Kalman filter. Brief history: simulation-aided inference @LANL Implosion calculations...

  5. LA-UR-

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

    var www htmlcentosextras crea t erepo varwwwhtmlcentosrpmforge cp -r r pm-gpg conEigs creat e repo -g var www htmlcentososrepodatacomps.xml var www...

  6. UR INFORMATIK UNIVERSIT

    E-Print Network [OSTI]

    Cengarle, Mara Victoria

    : : : : : : : : : : : : : : : : : : : : : : 25 3 Example application: Case study petrol station 28 3.1 Requirements Document

  7. UR principles2.indd

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

    and academia. That's why in August 2005, IBM and the Ewing Marion Kauffman Foundation, a private foundation that focuses on advancing innovation and entrepreneurship, cosponsored...

  8. LA-UR-

    Office of Scientific and Technical Information (OSTI)

    - Sonar 75.40 80.30 72.70 - - - Soyb"an 100.00 98.00 98.00 VAing 95.60 96.80 95.40 - Win e 88.80 93.30 88.70 Zoo 90.10 91.00 93,00 ' " .. ,: " oA? t i ( , .,' ". : ...

  9. LA-UR-

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron beamJoin2015JustKateKent52P6.02LaboratoryAlamos

  10. LA-UR-

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron beamJoin2015JustKateKent52P6.02LaboratoryAlamos

  11. LA-UR-

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron

  12. LA-UR-

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron 9 5 - -/e),,s - 6157 / The Cold War is Over: What

  13. LA-UR-

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron 9 5 - -/e),,s - 6157 / The Cold War is Over:

  14. LA-UR-

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItem Not Found Item Not Found TheHot electron dynamics in grapheneInverter8318-MSU I\ '\

  15. LA-UR-

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItem Not Found Item Not Found TheHot electron dynamics in grapheneInverter8318-MSU I\

  16. LA-UR-

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItem Not Found Item Not Found TheHot electron dynamics in grapheneInverter8318-MSU

  17. LA-UR-

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItem Not Found Item Not Found TheHot electron dynamics in grapheneInverter8318-MSUA ' Los

  18. URS Consent Order

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33Frequently20,000 Russian Nuclear Warheads into Fuel for U.S. Electricity3Department ofURANIUMA.

  19. URS Enforcement Letter

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33Frequently20,000 Russian Nuclear Warheads into Fuel for U.S. Electricity3Department ofURANIUMA.

  20. LA-UR-

    National Nuclear Security Administration (NNSA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA Approved:AdministrationAnalysisDarby/%2AOU1a Complex is anBigSummitJuner

  1. LA-UR-

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItem NotEnergy, science, and technology-- Energy, science, andD Model ofStability

  2. IoT Design Space Challenges: Circuits and Systems D. Blaauw, D. Sylvester, P. Dutta, Y. Lee, I. Lee, S. Bang, Y. Kim, G. Kim, P. Pannuto,

    E-Print Network [OSTI]

    Dutta, Prabal

    T) is a rapidly emerging application space, poised to become the largest electronics market for the semiconductor was previously absent. As a result, IoT presents the semiconductor industry with a market opportunity that may, extremely long lifetime HVAC sensors, to sensors for oil reservoir diagnosis [1]. To categorize this wide

  3. Decoupled PID Controller Synthesis for MIMO Plants with I/O Delays A. N. Mete, A. N. Gundes and H. Ozbay

    E-Print Network [OSTI]

    Gundes, A. N.

    Decoupled PID Controller Synthesis for MIMO Plants with I/O Delays A. N. Mete, A. N. G¨undes¸ and H. ¨Ozbay Abstract-- Decentralized Proportional+Integral+Derivative (PID) controller synthesis methods controller is turned-off and taken out of service. I. INTRODUCTION Proportional+Integral+Derivative (PID

  4. Spivack, Richard. "Advanced Technology Program Information Infrastructure for Healthcare Focused Program" The Future of Health Technology. ed. Renata Bushko. IOS Press, 2002.

    E-Print Network [OSTI]

    ) at the National Institute of Standards and Technology (NIST) is a cost-sharing program designed to partnerSpivack, Richard. "Advanced Technology Program Information Infrastructure for Healthcare Focused Program" The Future of Health Technology. ed. Renata Bushko. IOS Press, 2002. Advanced Technology Program

  5. Morphological and electrochemical characterization of electrodeposited ZnAg nanoparticle composite coatings

    SciTech Connect (OSTI)

    Punith Kumar, M.K.; Srivastava, Chandan, E-mail: csrivastava@materials.iisc.ernet.in

    2013-11-15T23:59:59.000Z

    Silver nanoparticles with an average size of 23 nm were chemically synthesized and used to fabricate ZnAg composite coatings. The ZnAg composite coatings were generated by electrodeposition method using a simple sulfate plating bath dispersed with 0.5, 1 and 1.5 g/l of Ag nanoparticles. Scanning electron microscopy, X-ray diffraction and texture co-efficient calculations revealed that Ag nanoparticles appreciably influenced the morphology, micro-structure and texture of the deposit. It was also noticed that agglomerates of Ag nanoparticles, in the case of high bath load conditions, produced defects and dislocations on the deposit surface. Ag nanoparticles altered the corrosion resistance property of ZnAg composite coatings as observed from Tafel polarization, electrochemical impedance analysis and an immersion test. Reduction in corrosion rate with increased charge transfer resistance was observed for ZnAg composite coatings when compared to a pure Zn coating. However, the particle concentration in the plating bath and their agglomeration state directly influenced the surface morphology and the subsequent corrosion behavior of the deposits. - Highlights: Synthesis of Ag nanoparticles with an average size of 23 nm Fabrication of Zn/nano Ag composite coating on mild steel Composite coatings showed better corrosion resistance. Optimization of particle concentration is necessary.

  6. Transparent Conducting Electrodes based on 1D and 2D Ag Nanogratings for Organic Photovoltaics

    E-Print Network [OSTI]

    Zeng, Beibei; Bartoli, Filbert J

    2014-01-01T23:59:59.000Z

    The optical and electrical properties of optically-thin one-dimensional (1D) Ag nanogratings and two-dimensional (2D) Ag nanogrids are studied, and their use as transparent electrodes in organic photovoltaics are explored. A large broadband and polarization-insensitive optical absorption enhancement in the organic light-harvesting layers is theoretically and numerically demonstrated using either single-layer 2D Ag nanogrids or two perpendicular 1D Ag nanogratings, and is attributed to the excitation of surface plasmon resonances and plasmonic cavity modes. Total photon absorption enhancements of 150% and 200% are achieved for the optimized single-layer 2D Ag nanogrids and double (top and bottom) perpendicular 1D Ag nanogratings, respectively.

  7. Corrosion behavior of newly developed TiAgFe dental alloys in neutral saline solution

    E-Print Network [OSTI]

    Zheng, Yufeng

    Corrosion behavior of newly developed Ti­Ag­Fe dental alloys in neutral saline solution B. B. Zhang, B. L. Wang, L. Li and Y. F. Zheng* The corrosion behavior of Ti­5Ag­xFe alloys (x ¼ 1, 2.5, 5 wt) Ti,Ti­ 5Ag­xFe alloys exhibited higher corrosion potentials, lower current densities, and larger

  8. Surface-supported Ag islands stabilized by a quantum size effect: Their interaction with small molecules relevant to ethylene epoxidation

    SciTech Connect (OSTI)

    Shao, Dahai

    2013-05-15T23:59:59.000Z

    This dissertation focuses on how QSE-stabilized, surface-supported Ag nanoclusters will interact with ethylene or oxygen. Experiments are performed to determine whether the QSE-mediated Ag islands react differently toward adsorption of ethylene or oxygen, or whether the adsorption of these small molecules will affect the QSE-mediated stability of Ag islands. Studies of the interaction of oxygen with Ag/Si(111)-77 were previously reported, but these studies were performed at a low Ag coverage where 3D Ag islands were not formed. So the study of such a system at a higher Ag coverage will be a subject of this work. The interaction of ethylene with Ag/Si(111)-77, as well as the interaction of oxygen with Ag/NiAl(110) are also important parts of this study.

  9. ag 50wx2 nafion-h: Topics by E-print Network

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

    of this phenomenon have concentrated on ion Nordlund, Kai 104 Panasonic Electric Works Europe AG panasonic-electric-works.com CCELERATIONSENSORS,IGHTSENSORS0RESSURESENSORS)NFOR...

  10. Potential-field geophysical programs for VAX 7xx computers; source code (programs A-G)

    SciTech Connect (OSTI)

    Not Available

    1989-01-01T23:59:59.000Z

    A U.S. Geological Survey report is presented giving the source code of potential-field geophysical programs (programs A-G) for VAX 7xx computers.

  11. AGS tune jump system to cross horizontal depolarization resonances overview

    SciTech Connect (OSTI)

    Glenn, J.W.; Ahrens, L.; Fu, W.; Mi, J.L.; Rosas, P.; Schoefer, V.; Theisen, C.; Altinbas, Z.

    2011-03-28T23:59:59.000Z

    Two partial snakes overcome the vertical depolarizing resonances in the AGS. But a new type of depolarizing intrinsic resonance from horizontal motion appeared. We reduce these using horizontal tune jumps timed to these resonances. We gain a factor of six in crossing rate with a tune jump of 0.05 in 100 {micro}s. Two quadrapoles, we described in 2009, pulse 42 times, the current matching beam energy. The power supplies for these quads are described in detail elsewhere in this conference. The controls for the Jump Quad system is based on a BNL designed Quad Function Generator. Two modules are used; one for timing, and one to supply reference voltages. Synchronization is provided by a proprietary serial bus, the Event Link. The AgsTuneJump application predicts the times of the resonances during the AGS cycle and calculates the power supply trigger times from externally collected tune and energy versus time data and the Low and High PS voltage functions from a voltage to current model of the power supply. The system was commissioned during runs 09 & 10 and is operational. Many beam effects are described elsewhere. The TuneJump system has worked well and has caused little trouble save for the perturbations in the lattice having such a large effect due to our need to run with the vertical tune within a few thousandths of the integer tune. As these problems were mostly sorted out by correcting the 6th harmonic orbit distortions which caused a large 18 theta beta wave. Also running with minimal chromaticity reduces emittance growth. There are still small beta waves which are being addressed. The timing of the pulses is still being investigated, but as each crossing causes minimal polarization loss, this is a lengthy process.

  12. Results from the E917 experiment at the AGS

    E-Print Network [OSTI]

    Birger B. Back; for the E917 collaboration

    1999-04-08T23:59:59.000Z

    Collisions of Au+Au have been studied at beam kinetic energies of 6, 8, and 10.8 GeV/nucleon at the AGS facility at Brookhaven National Laboratory. Particles emitted from the collisions were momentum analyzed and identified in a magnetic spectrometer system. Measurements were made at spectrometer angles in the range 14deg - 59deg. m_t spectra of protons from central collisions were analyzed to derive integrated rapidity distributions and inverse slope as a function of rapidity. The results are compared with a thermal model and it is concluded that there is either substantial transparency or longitudinal expansion at all three beam energies.

  13. On the high intensity aspects of AGS Booster proton operation

    SciTech Connect (OSTI)

    Reece, R.K.; Ahrens, L.A.; Bleser, E.J.; Brennan, J.M.; Gardner, C.; Glenn, J.W.; Roser, T.; Shoji, Y.; van Asselt, W.; Weng, W.T.

    1993-01-01T23:59:59.000Z

    Observations of high intensity effects on the proton performance of the AGS Booster are presented, including present operational limits and correction methods. The transverse emittances, optimum tune working points, damping of coherent transverse oscillations and correction of stopband resonances through third-order are discussed in addition to the observed tune spread due to space charge forces. The initial longitudinal phase space distribution, capture and acceleration parameters and measurements are also given. Operational tools and strategies relevant to the high intensity setup are mentioned.

  14. On the high intensity aspects of AGS Booster proton operation

    SciTech Connect (OSTI)

    Reece, R.K.; Ahrens, L.A.; Bleser, E.J.; Brennan, J.M.; Gardner, C.; Glenn, J.W.; Roser, T.; Shoji, Y.; van Asselt, W.; Weng, W.T.

    1993-06-01T23:59:59.000Z

    Observations of high intensity effects on the proton performance of the AGS Booster are presented, including present operational limits and correction methods. The transverse emittances, optimum tune working points, damping of coherent transverse oscillations and correction of stopband resonances through third-order are discussed in addition to the observed tune spread due to space charge forces. The initial longitudinal phase space distribution, capture and acceleration parameters and measurements are also given. Operational tools and strategies relevant to the high intensity setup are mentioned.

  15. AgFuture Energy LLC AFE | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-fTriWildcat 1AMEE JumpAeroWind Inc.Information AfluenteAg Fuels

  16. S R Biogas Energiesysteme AG | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty Edit with form HistoryRistma AG Jump to:Energy Information RwandaEnergyRyusekiSS

  17. SFC Smart Fuel Cell AG | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty Edit with form HistoryRistma AG Jump to:Energy InformationS WSERTRONIC JumpSFC

  18. Mepsolar AG aka Munich Energy Partners | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, searchOfRose Bend <StevensMcClellan,II JumpMepsolar AG aka Munich Energy

  19. Otter Tail Ag Enterprises LLC | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluatingGroup |JilinLuOpenNorthOlympia GreenThesource HistoryOsramOtherOtter Tail Ag

  20. Mechanism of coercivity enhancement by Ag addition in FePt-C granular films for heat assisted magnetic recording media

    SciTech Connect (OSTI)

    Varaprasad, B. S. D. Ch. S.; Takahashi, Y. K., E-mail: takahashi.yukiko@nims.go.jp; Wang, J.; Hono, K. [National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba 305-0047 (Japan); Ina, T.; Nakamura, T.; Ueno, W.; Nitta, K.; Uruga, T. [Japan Synchrotron Radiation Research Institute (JASRI/SPring-8), 1-1-1 Kouto, Sayo, Hyogo 679-5198 (Japan)

    2014-06-02T23:59:59.000Z

    We investigated the Ag distribution in a FePtAg-C granular film that is under consideration for a heat assisted magnetic recording medium by aberration-corrected scanning transmission electron microscope-energy dispersive X-ray spectroscopy and X-ray absorption fine structure. Ag is rejected from the core of FePt grains during the deposition, forming Ag-enriched shell surrounding L1{sub 0}-ordered FePt grains. Since Ag has no solubility in both Fe and Pt, the rejection of Ag induces atomic diffusions thereby enhancing the kinetics of the L1{sub 0}-order in the FePt grains.

  1. Very Low-Cost Internet Access Using KioskNet S. Guo, M.H. Falaki, E.A. Oliver, S. Ur Rahman, A. Seth, M.A. Zaharia, and S. Keshav

    E-Print Network [OSTI]

    California at Irvine, University of

    ) and appears to be economically viable. We estimate that our system requires a capital expenditure of $100Very Low-Cost Internet Access Using KioskNet S. Guo, M.H. Falaki, E.A. Oliver, S. Ur Rahman, A kiosks in developing regions can cost-effectively provide communication and e-governance services

  2. A novel polythreading Ag(I) coordination polymer with blue photoluminescence

    SciTech Connect (OSTI)

    Duan, Xian-Ying, E-mail: dxynumber@163.com [State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093 (China); Institute of Chemistry, Henan Academy of Sciences, Zhengzhou 450002 (China); Yao, Jing; Lu, Chang-Sheng [State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093 (China); Meng, Qing-Jin, E-mail: mengqj@nju.edu.cn [State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093 (China)

    2013-04-15T23:59:59.000Z

    One new compound, [Ag(p-bix)]{sub 3}[Ag(Hbtc){sub 2}]2H{sub 2}O (H{sub 3}btc=1,2,4-benzenetricarboxylate, p-bix=1,4-bis(imidazol-1-ylmethyl)-benzene), has been synthesized under hydrothermal conditions and characterized by elemental analysis, IR, PXRD, luminescent analysis, and single-crystal X-ray diffraction. X-ray structural analysis revealed that 0-D unit [Ag(Hbtc){sub 2}]{sup 3?} and two kinds of 1-D linear chain [Ag(p-bix)]{sub ?}{sup +}, can be found within the crystal structure. The combination of 0-D [Ag(Hbtc){sub 2}]{sup 3?} unit and 1-D undulated chain [Ag1(p{sub 1}-bix)]{sub ?}{sup +} through weak AgO bond gave rise to 2-D anionic supramolecular doublelayer. Then the grids of the 2-D layer are threaded by 1-D linear cationic chain [Ag2(p{sub 2}-bix)]{sub ?}{sup +} to generate entangled 3-D architecture with unusual poly(pseudo-rotaxane)-type arrangements. Luminescent properties of the title complex were also studied in this paper. - Graphical abstract: Novel 3D polythreading supramolecular architecture was constructed, in which 1D linear cationic chains [Ag(p{sub 2}-bix)]{sub ?}{sup +} threaded into the grid of weak AgO bonded anionic 2D sheet. Highlights: ? Novel 1D{sup +}+2D{sup ?}?3D polythreading coordination complex was reported. ? Diverse conformations of p-bix result in different 1D [Ag(p-bix)]{sub ?}{sup +} chains. ? The title complex displayed blue photoluminescence at room temperature.

  3. SIMULATIONS OF THE AGS MMPS STORING ENERGY IN CAPACITOR BANKS

    SciTech Connect (OSTI)

    MARNERIS,I.; BADEA, V.S.; BONATI, R.; ROSER, T.; SANDBERG, J.

    2007-06-25T23:59:59.000Z

    The Brookhaven AGS Main Magnet Power Supply (MMPS) is a thyristor control supply rated at 5500 Amps, +/-9000 Volts. The peak magnet power is 50 MWatts. The power supply is fed from a motor/generator manufactured by Siemens. The generator is 3 phase 7500 Volts rated at 50 MVA. The peak power requirements come from the stored energy in the rotor of the motor/generator. The motor generator is about 45 years old, made by Siemens and it is not clear if companies will be manufacturing similar machines in the future. We are therefore investigating different ways of storing energy for future AGS MMPS operations. This paper will present simulations of a power supply where energy is stored in capacitor banks. Two dc to dc converters will be presented along with the control system of the power section. The switching elements will be IGCT's made by ABB. The simulation program used is called PSIM version 6.1. The average power from the local power authority into the power supply will be kept constant during the pulsing of the magnets at +/-50 MW. The reactive power will also be kept constant below 1.5 MVAR. Waveforms will be presented.

  4. Preparation and photocatalytic properties of AgISnO{sub 2} nano-composites

    SciTech Connect (OSTI)

    Wen, Biao; Wang, Xiao-Hui; Lu, Juan; Cao, Jia-Lei [College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215021 (China); Wang, Zuo-Shan, E-mail: zuoshanwang@suda.edu.cn [College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215021 (China); State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081 (China)

    2013-05-15T23:59:59.000Z

    Highlights: ? AgISnO{sub 2} nano-composites have been successfully synthesized. ? As-prepared AgISnO{sub 2} nano-composites own the excellent visible light photocatalytic activity. ? As-prepared AgISnO{sub 2} nano-composites own the excellent stability. - Abstract: AgI doped SnO{sub 2} nano-composites were prepared by the chemical coprecipitation method and were characterized by the X-ray diffraction, transmission electron microscopy and X-ray photoelectron spectroscopy. Results showed that main of the I{sup ?} ions remained in the AgI lattice which is highly dispersed in the system. The photo-catalytic experiments performed under visible light irradiation using methylene blue as the pollutant revealed that not only the photo-catalytic activity but also the stability of SnO{sub 2} based photocatalyst could be improved by introduction of an appropriate amount of AgI, and the result was further supported by the UVVis diffuse reflection spectra and the electron spin-resonance spectra. Among all of the samples, AgISnO{sub 2} nano-composite with 2At% AgI exhibited the best catalytic efficiency and stability.

  5. AgExcellence 2006 The College of Agriculture and Montana Agricultural Experiment Station in Review

    E-Print Network [OSTI]

    Maxwell, Bruce D.

    AgExcellence 2006 The College of Agriculture and Montana Agricultural Experiment Station in Review #12;ACAdEMiC pRogRAMS College of Agriculture Baccalaureate: Agricultural Education Options: AgRelations Teaching Agricultural Operations Technology MasterofScience: Agricultural Education Baccalaureate

  6. AGS Experiment E951 An R&D Program for Targetry and Capture

    E-Print Network [OSTI]

    McDonald, Kirk

    a Argonne National Laboratory, Argonne, IL 60439 b Brookhaven National Laboratory, Upton, NY 11973 c LANSCE Collider AGS Booster PS PSR Proton Energy (GeV) 16-24 24 8 24 0.8 p/bunch 5 1013 1.6 1013 6. Presented to the AGS/RHIC PAC on May 25, 1999: "The PAC recognizes that future progress in elementary

  7. Structural, Optical, and Transport Properties of -and Ag3VO4 K. R. Poeppelmeier,*,

    E-Print Network [OSTI]

    Poeppelmeier, Kenneth R.

    and impedance spectroscopy. In order to assess the optical and electrical properties of -Ag3VO4, in situ at room temperature. Instead, we measured these properties in situ on sintered polycrystalline samples measurements were performed above the phase-transition temperature. Thin films of -Ag3VO4 were prepared

  8. Bilayer thickness effects on nanoindentation behavior of Ag/Ni multilayers

    E-Print Network [OSTI]

    Hong, Soon Hyung

    by nanoindentation hardness and creep tests. The hardness increased with decreasing bilayer thickness, although of nanoindentation creep tests on Ag/Ni nanomultilayers with various bilayer thicknesses. Multilayered Ag/Ni films thickness. A nanoindentation creep test was used to study the creep behavior of nano- scale multilayers

  9. This page shows how to use the My Pitt Video (Panopto) iOS application on an iPhone. To log in to the iOS app, swipe the screen to the right or click the menu button in the top left corner,

    E-Print Network [OSTI]

    Benos, Panayiotis "Takis"

    iPhone app iPhone app This page shows how to use the My Pitt Video (Panopto) iOS applicationPhone app View Panopto Sessions To view sessions on the My Pitt Video (Panopto) server, tap the menu button you would like the session to be stored. Enter a session name, and tap "Record a new video" and begin

  10. Joint contributions of Ag ions and oxygen vacancies to conducting filament evolution of Ag/TaO{sub x}/Pt memory device

    SciTech Connect (OSTI)

    Chung, Yu-Lung; Cheng, Wen-Hui; Chen, Wei-Chih; Jhan, Sheng-An; Chen, Jen-Sue, E-mail: jenschen@mail.ncku.edu.tw [Department of Materials Science and Engineering, National Cheng Kung University, Tainan 701, Taiwan (China); Jeng, Jiann-Shing [Department of Materials Science, National University of Tainan, Tainan 700, Taiwan (China)

    2014-10-28T23:59:59.000Z

    The electroforming and resistive switching behaviors in the Ag/TaO{sub x}/Pt trilayer structure are investigated under a continual change of temperatures between 300?K and 100?K to distinguish the contributions of Ag ions and oxygen vacancies in developing of conducting filaments. For either electroforming or resistive switching, a significantly higher forming/set voltages is needed as the device is operated at 100?K, as compared to that observed when operating at 300?K. The disparity in forming/set voltages of Ag/TaO{sub x}/Pt operating at 300?K and 100?K is attributed to the contribution of oxygen vacancies, in addition to Ag atoms, in formation of conducting filament at 100?K since the mobilities of oxygen vacancies and Ag ions become comparable at low temperature. The presence of oxygen vacancy segment in the conducting filament also modifies the reset current from a gradually descending behavior (at 300?K) to a sharp drop (at 100?K). Furthermore, the characteristic set voltage and reset current are irreversible as the operation temperature is brought from 100?K back to 300?K, indicating the critical role of filament constituents on the switching behaviors of Ag/oxide/Pt system.

  11. Optical and quantum efficiency analysis of (Ag,Cu)(In,Ga)Se2 absorber layers

    SciTech Connect (OSTI)

    Boyle, Jonathan; Hanket, Gregory; Shafarman, William

    2009-06-09T23:59:59.000Z

    (Ag,Cu)(In,Ga)Se2 thin films have been deposited by elemental co-evaporation over a wide range of compositions and their optical properties characterized by transmission and reflection measurements and by relative shift analysis of quantum efficiency device measurements. The optical bandgaps were determined by performing linear fits of (?h?)2 vs. h?, and the quantum efficiency bandgaps were determined by relative shift analysis of device curves with fixed Ga/(In+Ga) composition, but varying Ag/(Cu+Ag) composition. The determined experimental optical bandgap ranges of the Ga/(In+Ga) = 0.31, 0.52, and 0.82 groups, with Ag/(Cu+Ag) ranging from 0 to 1, were 1.19-1.45 eV, 1.32-1.56 eV, and 1.52-1.76 eV, respectively. The optical bowing parameter of the different Ga/(In+Ga) groups was also determined.

  12. SrAgZn and EuAgZn with KHg{sub 2}-type structureStructure, magnetic properties, and {sup 151}Eu Mssbauer spectroscopy

    SciTech Connect (OSTI)

    Gerke, Birgit; Rodewald, Ute Ch.; Niehaus, Oliver; Pttgen, Rainer, E-mail: pottgen@uni-muenster.de

    2013-07-15T23:59:59.000Z

    Samples of SrAgZn and EuAgZn were synthesized by reaction of the elements in sealed tantalum crucibles. Both structures were refined on the basis of single crystal X-ray diffractometer data: KHg{sub 2}-type, Imma, a=476.7(1), b=780.9(2), c=810.1(2) pm, R{sub 1}/wR{sub 2}=0.0189/0.0119, 381 F values for SrAg{sub 1.12}Zn{sub 0.88} and a=474.43(9), b=760.8(2), c=799.0(2) pm, R{sub 1}/wR{sub 2}=0.0226/0.0483, 370 F values for EuAg{sub 1.17}Zn{sub 0.83} with 13 variables per refinement. Silver and zinc are randomly distributed on the Hg position and build up three-dimensional networks. EuAgZn shows ferromagnetic ordering at 29(1) K. In the temperature range from 75 to 300 K the sample shows CurieWeiss behaviour with ?{sub eff}=7.87(1) ?{sub B}/Eu atom and ?{sub P}=37.1(1) K, indicating divalent europium. {sup 151}Eu Mssbauer spectroscopic measurements confirmed the divalent state with an isomer shift of ?9.31 mm/s at 78 K. Temperature dependent {sup 151}Eu data show first magnetic hyperfine field splitting at 25 K and a saturated magnetization of 17 T at 5.2 K. The temperature dependence can be described by an S=7/2 Brillouin function. - Graphical abstract: The near neighbor coordination of the strontium and europium atoms in SrAg{sub 1.12}Zn{sub 0.88}, EuAg{sub 1.17}Zn{sub 0.83}, and EuAuZn. - Highlights: Synthesis of new intermetallic zinc compounds SrAgZn and EuAgZn. Ferromagnetic ordering of EuAgZn at 29 K. Magnetic hyperfine field splitting in the {sup 151}Eu Mssbauer spectrum.

  13. Performance and measurements of the AGS and Booster beams

    SciTech Connect (OSTI)

    Weng, W.T. [AGS Department, Brookhaven National Laboratory, Upton, New York 11973-5000 (United States)

    1996-06-01T23:59:59.000Z

    In May 1995, the AGS reached its upgrade intensity goal of 6{times}10{sup 13} ppp, the highest world intensity record for a proton synchrotron on a single pulse basis. At the same time, the Booster reached 2.2{times}10{sup 13} ppp surpassing the design goal of 1.5{times}10{sup 13} ppp due to the introduction of second harmonic cavity during injection. The critical accelerator manipulations, such as resonance stopband corrections, second harmonics cavity, direct rf feedback, gamma-transition jump, longitudinal phase space dilution, and transverse instability damping, will be described as well as some beam measurements. Possible future intensity and brightness upgrades will also be reported. {copyright} {ital 1996 American Institute of Physics.}

  14. Intermediate hearth repair technique at Thyssen Stahl AG

    SciTech Connect (OSTI)

    Kowalski, W.; Bachhofen, H.J.; Ruether, P.; Ballewski, T. [Thyssen Stahl AG, Duisburg (Germany)

    1996-12-31T23:59:59.000Z

    Nowadays various techniques for the fastest possible intermediate repair and/or emplacement of refractory materials above the tuyere level allow a significant extension of furnace campaign life. The latter are hence now exclusively determined by the service life of the hearth. The improvement of hearth monitoring and the estimation of residual brick strength of the refractory lining on the basis of temperature measurements in the hearth enable the location of individual zones of premature wear. These measurement methods, which were developed by Thyssen Stahl AG, aid the decision to undertake selective repair of the hearth. Three areas of repair are differentiated: taphole zone; hearth wall, localized; and hearth wall, extensive. This hearth repair method is described in this report using the example of hearth refurbishing blast furnace 8, Hamborn.

  15. Advances in fabrication of Ag-clad Bi-2223 superconductors.

    SciTech Connect (OSTI)

    Balachandran, U.

    1998-09-04T23:59:59.000Z

    Powder-in-tube (PIT) processing was used to fabricate multifilamentary Ag-clad Bi{sub 2}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub y} (Bi-2223) superconductors for various electric power applications. Enhancements in the transport current properties of long lengths of multifilament tapes were achieved by increasing the packing density of the precursor powder, improving the mechanical deformation, and adjusting the cooling rate. The dependence of the critical current density on magnetic field and temperature for the optimally processed tapes was measured. J{sub c} was greater than 10{sup 4} (A/cm{sup 2}) at 20 K for magnetic field up to 3 T and parallel to the c-axis which is of interest for use in refrigerator coded magnets. An attempt was made to combine the good alignment of Bi-2223 grains in Ag-sheathed superconducting tapes to obtain high J{sub c} values at high temperature and low field, and good intrinsic pinning of YBa{sub 2}Cu{sub 3}O{sub 7{minus}d} (Y-123) thin film to maintain high J{sub c} values in high fields. A new composite multifilament tape was fabricated such that the central part contained Bi-2223 filaments, with the primary function of conducting the transport current. The central Bi-2223 filaments were surrounded by Y-123 thin film to shield the applied magnetic field and protect the Bi-2223 filaments. The J{sub c} values of the composite tape were better than those of an uncoated tape. In the case of 77 K applications, an I{sub c} of about 60 A was obtained in a 150 m long tape and zero applied magnetic field. In-situ strain characteristics of the mono- and multifilament tapes were conducted.

  16. ANGLE-RESOLVED PHOTOEMISSION STUDIES OF Ag, Au, AND Pt

    SciTech Connect (OSTI)

    Davis, R.F.; Mills, K.A.; Thornton, G.; Kevan, S.D.; Shirley, D.A.

    1980-06-01T23:59:59.000Z

    An important question regarding the technique of angle-resolved photoemission (ARP) is the extent to which it can be used to determine experimental valence-band dispersion relations E{sub i}({rvec k}) for single crystalline solids. In the case of the 3d and 4d transition metals, studies of copper, nickel, palladium, and silver, show that a model based on the assumption of direct interband transitions (direct-transition model) may be used, in conjunction with an appropriate final-state dispersion relation E{sub f}({rvec k}), to elucidate E{sub i}({rvec k}) for these materials along several high symmetry lines (primarily {Gamma}{Lambda}L) in k-space. To answer this question more generally, we have undertaken an extensive study of the valence band structures of other transition metals along various k-space lines. To date, studies have been extended to the (111) faces of the 5d metals Pt and Au along with the Pt(100) ((5 x 20) surface structure) face, and the (110) and (100) faces of Ag. The experiments were all conducted at SSRL, using synchrotron radiation in the range 6 eV < h{nu} < 34 eV. The results of these studies, combined with our previous Ag(111) work at these energies, allow us to invoke important conclusions concerning the relationships between ARP data, E{sub i}({rvec k}) and E{sub f}({rvec k}) for these materials. Several are summarized. For each crystal face investigated, the direct-transition model, along with a simple quasi-free-electron E{sub f}({rvec k}), was sufficient to determine experimental E{sub i}({rvec k}) relations along the appropriate k-space line that were in general agreement with theoretical RAPW band structure calculations. Essentially, we required E{sub f}({rvec k}) to be of the form (h{sup 2}/2m*)|{rvec k} + {rvec G}|{sup 2} + V{sub o}, where {rvec G} is a reciprocal lattice vector, fitting this relation to the appropriate calculated bulk conduction band near the center of the line under investigation, with the inner potential V{sub o} and the reduced mass m* as free parameters. An additional shift of V{sub o} was necessary for Ag(110) and Pt(100) data, to obtain better agreement with theoretical bands. While generally excellent agreement between experimental and theoretical bands was found for Ag, as was the case for other 3d and 4d metals, substantial disagreement was observed for Pt and Au in parts of the Brillouin zone. This is probably an indication that further theoretical work is needed for these more complicated elements. The agreement in Ag is illustrated by Fig. 1, where experimental and theoretical bands are compared for all three high-symmetry directions. The determinations of E{sub i}({rvec k}) for the {Lambda} directions were relatively simple because peaks in the ARP spectra of (111) faces were essentially all attributable to primary direct transition. However, the {Sigma}, {Sigma}{prime}, and {Delta} directions were complicated by secondary emission peaks and dispersionless density-of-states (DOS) features in the spectra of the (100) and (110) faces. Peak intensity resonances associated with the bulk conduction band structure near {Lambda} were observed for each crystal face, and these simplified the assignment of peaks in the ARP spectra. The relationship between these resonances, which appear to be rather general phenomena, and E{sub f}({rvec k}), will be discussed. In summary, it is clear from these and other studies that the ARP technique, in conjunction with the direct-transition model, is generally applicable to valence band mapping in single crystals, provided that a suitable final-state dispersion relation can be calculated. However, complications like those observed in the ARP spectra of Ag, Pt, and Au may make the determination of E{sub i}({rvec k}) relations considerably more difficult for more complicated systems.

  17. Transition voltages of vacuum-spaced and molecular junctions with Ag and Pt electrodes

    SciTech Connect (OSTI)

    Wu, Kunlin; Bai, Meilin; Hou, Shimin, E-mail: smhou@pku.edu.cn [Key Laboratory for the Physics and Chemistry of Nanodevices, Department of Electronics, Peking University, Beijing 100871 (China); Sanvito, Stefano [School of Physics, AMBER and CRANN Institute, Trinity College, Dublin 2 (Ireland)

    2014-07-07T23:59:59.000Z

    The transition voltage of vacuum-spaced and molecular junctions constructed with Ag and Pt electrodes is investigated by non-equilibrium Green's function formalism combined with density functional theory. Our calculations show that, similarly to the case of Au-vacuum-Au previously studied, the transition voltages of Ag and Pt metal-vacuum-metal junctions with atomic protrusions on the electrode surface are determined by the local density of states of the p-type atomic orbitals of the protrusion. Since the energy position of the Pt 6p atomic orbitals is higher than that of the 5p/6p of Ag and Au, the transition voltage of Pt-vacuum-Pt junctions is larger than that of both Ag-vacuum-Ag and Au-vacuum-Au junctions. When one moves to analyzing asymmetric molecular junctions constructed with biphenyl thiol as central molecule, then the transition voltage is found to depend on the specific bonding site for the sulfur atom in the thiol group. In particular agreement with experiments, where the largest transition voltage is found for Ag and the smallest for Pt, is obtained when one assumes S binding at the hollow-bridge site on the Ag/Au(111) surface and at the adatom site on the Pt(111) one. This demonstrates the critical role played by the linker-electrode binding geometry in determining the transition voltage of devices made of conjugated thiol molecules.

  18. Nanoscale structure in AgSbTe2 determined by diffuse elastic neutron scattering

    SciTech Connect (OSTI)

    Specht, Eliot D [ORNL; Ma, Jie [ORNL; Delaire, Olivier A [ORNL; Budai, John D [ORNL; May, Andrew F [ORNL; Karapetrova, Evguenia A. [Argonne National Laboratory (ANL)

    2015-01-01T23:59:59.000Z

    Diffuse elastic neutron scattering measurements confirm that AgSbTe2 has a hierarchical structure, with defects on length scales from nanometers to microns. While scattering from mesoscale structure is consistent with previously-proposed structures in which Ag and Sb order on a NaCl lattice, more diffuse scattering from nanoscale structure suggests a structural rearrangement in which hexagonal layers form a combination of (ABC), (ABA), and (AAB) stacking sequences. The AgCrSe2 structure is the best-fitting model for the local atomic arrangements.

  19. Important notIce aBoUt yoUr rIghts Under the followIng colUmBIa UnIversIty retIrement plans

    E-Print Network [OSTI]

    Grishok, Alla

    Important notIce aBoUt yoUr rIghts Under the followIng colUmBIa UnIversIty retIrement plans: ·ColumbiaUniversityRetirementPlanforOfficers ·ColumbiaUniversityRetirementPlanforSupportStaff ·ColumbiaUniversityRetirementPlanforSupportStaffAssociation ·ColumbiaUniversityVoluntaryRetirementSavingsPlan(VRSP) Human Resources Retirement Benefits

  20. au-ag alloy static: Topics by E-print Network

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

    Sec. 5 uncovers a bug in the running example 12 A Size Library of Near-Infrared Absorbing Hollow Au-Ag Nanoshells and Their Surprising in vivo Instability Chemistry Websites...

  1. SO2-induced stability of Ag-alumina catalysts in the SCR of NO...

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

    Peden.2009."SO2-induced stability of Ag-alumina catalysts in the SCR of NO with methane."Applied Catalysis. B, Environmental 88(1-2):98-105. Authors: X She M Flytzani-Stephanopoul...

  2. Annales Geophysicae (2005) 23: 553566 SRef-ID: 1432-0576/ag/2005-23-553

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    -00101 Helsinki, Finland 3Solar and Solar Terrestrial Missions Div., ESTEC, 2200 AG Noordwijk to play a key role in the flux and energy transport in the magnetotail. Most likely, these fast flows

  3. CONTENT ANR @ MSU AgBioResearch Planting Recommendations for Dry Edible Beans

    E-Print Network [OSTI]

    SKIP TO CONTENT ANR @ MSU AgBioResearch Home Bean Info Beet Info Directions History InfoVideos Links Planting Recommendations for Dry Edible Beans Market Class Variety Maturity Plants/Seeds/ Seeds

  4. CONTENT ANR @ MSU AgBioResearch Michigan Dry Bean Crop Protection Products

    E-Print Network [OSTI]

    SKIP TO CONTENT ANR @ MSU AgBioResearch Home Bean Info Beet Info Directions History InfoVideos Links Michigan Dry Bean Crop Protection Products Common Chemical Name Brand Name Company Crop Use Seed

  5. Simulations of Merging Helion Bunches on the AGS Injection Porch

    SciTech Connect (OSTI)

    Gardner, C. J. [Brookhaven National Lab. (BNL), Upton, NY (United States). Collider-Accelerator Dept.

    2014-08-29T23:59:59.000Z

    During the setup of helions for the FY2014 RHIC run it was discovered that the standard scheme for merging bunches on the AGS injection porch required an injection kicker pulse shorter than what was available. To overcome this difficulty, K. Zeno proposed and developed an interesting and unusual alternative which uses RF harmonic numbers 12, 4, 2 (rather than the standard 8, 4, 2) to merge 8 helion bunches into 2. In this note we carry out simulations that illustrate how the alternative scheme works and how it compares with the standard scheme. This is done in Sections 13 and 14. A scheme in which 6 bunches are merged into 1 is simulated in Section 15. This may be useful if more helions per merged bunch are needed in future runs. General formulae for the simulations are given in Sections 9 through 12. For completeness, Sections 1 through 8 give a derivation of the turn-by-turn equations of longitudinal motion at constant magnetic field. The derivation is based on the work of MacLachlan. The reader may wish to skip over these Sections and start with Section 9.

  6. Electromagnetic properties of Bi-2223/Ag concentric tapes

    SciTech Connect (OSTI)

    Majoros, M.; Polak, M.; Kvitkovic, J.; Suchon, D. [Slovak Academy of Sciences, Bratislava (Slovakia). Inst. of Electrical Engineering] [Slovak Academy of Sciences, Bratislava (Slovakia). Inst. of Electrical Engineering; Martini, L.; Ottoboni, V.; Zannella, S. [CISE SpA, Segrate (Italy)] [CISE SpA, Segrate (Italy)

    1996-07-01T23:59:59.000Z

    It is well established that near the silver interface highly textured Bi-2223 layers compared to the inner ceramic core may be obtained. Thus Bi-2223 multilayered concentric tapes with silver matrix are very promising in increasing transport critical current densities. In the present work the authors report on the electromagnetic characterization of short tapes having in their cross-section a very thin HTS flattened ring with Ag inside and outside of it. The samples were prepared by the powder in tube method and have self-field critical current densities J{sub c} of the order of 3 {times} 10{sup 4} A/cm{sup 2} at 77 K. Transport and SQUID magnetization measurements revealed weak link nature of the samples in low magnetic fields. Large transport J{sub c}(B) hysteresis was observed at 4.2 K and magnetic fields up to 20 T. Magnetic field profiles measurements with miniature Hall sensors are in qualitative accordance with model calculations supposing homogeneous current density distribution across the superconducting core.

  7. The winds of Luminous Blue Variables and the Mass of AG Car

    E-Print Network [OSTI]

    Jorick S. Vink; Alex de Koter

    2002-07-15T23:59:59.000Z

    We present radiation-driven wind models for Luminous Blue Variables (LBVs) and predict their mass-loss rates. A comparison between our predictions and the observations of AG Car shows that the variable mass loss behaviour of LBVs is due the recombination/ionisation of Fe IV/III and Fe III/II. We also derive a present-day mass of 35 Msun for AG Car.

  8. Analysis of AGS E880 polarimeter data at Gy = 12.5.

    SciTech Connect (OSTI)

    Cadman, R.; Huang, H.; Krueger, K.; Spinka, H.; Underwood, D. (High Energy Physics); (Brookhaven National Laboratory)

    2012-02-23T23:59:59.000Z

    Data were collected with the AGS internal (E880) polarimeter at G{gamma} = 12.5 during the FY04 polarized proton run. Measurements were made with forward scintillation counters in coincidence with recoil counter telescopes, permitting an absolute calibration of the polarimeter for both nylon and carbon targets. The results are summarized and they will also be useful for an absolute calibration of the AGS CNI polarimeter at G{gamma} = 12.5.

  9. HIGH ENERGY PULSED POWER SYSTEM FOR AGS SUPER NEUTRINO FOCUSING HORN.

    SciTech Connect (OSTI)

    ZHANG, S.Y.; SANDBERG, J.; WENG, W.-T.

    2005-05-16T23:59:59.000Z

    This paper present a preliminary design of a 300 kA, 2.5 Hz pulsed power system. This system will drive the focusing horn of proposed Brookhaven AGS Neutrino Super Beam Facility for Very Long Baseline Neutrino Oscillation Experiment. The peak output power of the horn pulsed power system will reach Giga-watts, and the upgraded AGS will be capable of delivering 1 MW in beam power.

  10. Ag-Pd-Cu alloy inserted transparent indium tin oxide electrodes for organic solar cells

    SciTech Connect (OSTI)

    Kim, Hyo-Joong; Seo, Ki-Won; Kim, Han-Ki, E-mail: imdlhkkim@khu.ac.kr [Department of Advanced Materials Engineering for Information and Electronics, Kyung-Hee University, 1 Seocheon-dong, Yongin-si, Gyeonggi-do 446-701 (Korea, Republic of); Noh, Yong-Jin; Na, Seok-In [Graduate School of Flexible and Printable Electronics, Chonbuk National University, 664-14, Deokjin-dong, Jeonju-si, Jeollabuk-do 561-756 (Korea, Republic of)

    2014-09-01T23:59:59.000Z

    The authors report on the characteristics of Ag-Pd-Cu (APC) alloy-inserted indium tin oxide (ITO) films sputtered on a glass substrate at room temperature for application as transparent anodes in organic solar cells (OSCs). The effect of the APC interlayer thickness on the electrical, optical, structural, and morphological properties of the ITO/APC/ITO multilayer were investigated and compared to those of ITO/Ag/ITO multilayer electrodes. At the optimized APC thickness of 8?nm, the ITO/APC/ITO multilayer exhibited a resistivity of 8.55??10{sup ?5} ? cm, an optical transmittance of 82.63%, and a figure-of-merit value of 13.54??10{sup ?3} ?{sup ?1}, comparable to those of the ITO/Ag/ITO multilayer. Unlike the ITO/Ag/ITO multilayer, agglomeration of the metal interlayer was effectively relieved with APC interlayer due to existence of Pd and Cu elements in the thin region of the APC interlayer. The OSCs fabricated on the ITO/APC/ITO multilayer showed higher power conversion efficiency than that of OSCs prepared on the ITO/Ag/ITO multilayer below 10?nm due to the flatness of the APC layer. The improved performance of the OSCs with ITO/APC/ITO multilayer electrodes indicates that the APC alloy interlayer prevents the agglomeration of the Ag-based metal interlayer and can decrease the thickness of the metal interlayer in the oxide-metal-oxide multilayer of high-performance OSCs.

  11. I/O

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

    from outside of LANL, see instructions here: http:www.lanl.govprojectscomputingweb hpc.html Consultants left to right, back to front Ben Santos, Hal Marshall, Riley...

  12. os_io.c

    E-Print Network [OSTI]

    7232, if (n < 0). 7233, e = err_code_from_errno ()___err_code_from_errno();. 7234, else if (n == sizeof (execvp_errno)). 7235, {. 7236, errno(*__errno_location

  13. I/O

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

    languages, debugging * Parallel computing * HPC and Unix operating systems, utilities, libraries * Unix Linux scripting * Archival storage: High Performance Storage System...

  14. Palmer-IO.ppt

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible for RenewableSpeedingBiomassPPPO Website

  15. I/O

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh School footballHydrogen andHypernuclei in Hall C High2January-March,

  16. I/O

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh School footballHydrogen andHypernuclei in Hall C

  17. I/O

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh School footballHydrogen andHypernuclei in Hall CIn this issue Things

  18. EFG IO?-90)

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA group currentBradleyTableSelling CorpNew 1325.8.Enaineer District2, j

  19. IO235U

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA groupTuba City, Arizona, DisposalFourthNrr-osams ADMIN551 - g 7635U 93 -256

  20. Temperature-dependent adsorption of surfactant molecules and associated crystallization kinetics of noncentrosymmetric Fe(IO{sub 3}){sub 3} nanorods in microemulsions

    SciTech Connect (OSTI)

    El-Kass, Moustafa [Universit de Savoie, Laboratoire SYMME, BP 80439, 74944 Annecy Le Vieux Cedex (France); Ladj, Rachid [Universit de Savoie, Laboratoire SYMME, BP 80439, 74944 Annecy Le Vieux Cedex (France); Universit Lyon1, CNRS, UMR 5007, LAGEP, CPE, 43 bd 11 Novembre 1918, F-69622 Villeurbanne (France); Mugnier, Yannick, E-mail: Yannick.Mugnier@univ-savoie.fr [Universit de Savoie, Laboratoire SYMME, BP 80439, 74944 Annecy Le Vieux Cedex (France); Le Dantec, Ronan [Universit de Savoie, Laboratoire SYMME, BP 80439, 74944 Annecy Le Vieux Cedex (France); Hadji, Rachid [Institut Jean Lamour, UMR CNRS n7198, Universit de Lorraine, Nancy 1, BP 239, 54506 Vandoeuvre-ls-Nancy Cedex (France); Marty, Jean-Christophe [Universit de Savoie, Laboratoire SYMME, BP 80439, 74944 Annecy Le Vieux Cedex (France); Rouxel, Didier [Institut Jean Lamour, UMR CNRS n7198, Universit de Lorraine, Nancy 1, BP 239, 54506 Vandoeuvre-ls-Nancy Cedex (France); Durand, Christiane [Universit de Savoie, Laboratoire SYMME, BP 80439, 74944 Annecy Le Vieux Cedex (France); Fontvieille, Dominique [UMR CARRTEL (INRA/Universit de Savoie), Laboratoire de Microbiologie Aquatique, BP 511, 74203 Thonon Cedex (France); Rogalska, Ewa [Structure et Ractivit des Systmes Molculaires Complexes, UMR 7565, Nancy Universit, BP 70239, 54506 Vandoeuvre-ls-Nancy cedex (France); and others

    2013-11-15T23:59:59.000Z

    Graphical abstract: - Highlights: Crystallization of Fe(IO{sub 3}){sub 3} in microemulsions probed by hyper-Rayleigh scattering. A faster growth and a better shape control of nanorods are obtained at 80 C. Different persistent cell deformations are related to the crystallization kinetics. A temperature-dependent adsorption of surfactants on nanorods is suggested. - Abstract: Aggregation-induced crystallization of iron iodate nanorods within organicinorganic aggregates of primary amorphous precursors is probed by time-dependent hyper-Rayleigh scattering measurements in Triton X-100 based-microemulsions. In the context of a growing interest of noncentrosymmetric oxide nanomaterials in multi-photon bioimaging, we demonstrate by a combination of X-ray diffraction and electron microscopy that an increase in the synthesis of temperature results in faster crystallization kinetics and in a better shape-control of the final Fe(IO{sub 3}){sub 3} nanorods. For initial microemulsions of fixed composition, room-temperature synthesis leads to bundles of 13 ?m long nanorods, whereas shorter individual nanorods are obtained when the temperature is increased. Results are interpreted in terms of kinetically unfavorable mesoscale transformations due to the strong binding interactions with Triton molecules. The interplay between the nanorod crystallization kinetics and their corresponding unit cell deformation, evidenced by lattice parameter refinements, is attributed to a temperature-dependent adsorption of surfactants molecules at the organicinorganic interface.

  1. THE AGS-BASED SUPER NEUTRINO BEAM FACILITY CONCEPTUAL DESIGN REPORT

    SciTech Connect (OSTI)

    WENG,W.T.; DIWAN,M.; RAPARIA,D.

    2004-10-08T23:59:59.000Z

    After more than 40 years of operation, the AGS is still at the heart of the Brookhaven hadron accelerator complex. This system of accelerators presently comprises a 200 MeV linac for the pre-acceleration of high intensity and polarized protons, two Tandem Van der Graaffs for the pre-acceleration of heavy ion beams, a versatile Booster that allows for efficient injection of all three types of beams into the AGS and, most recently, the two RHIC collider rings that produce high luminosity heavy ion and polarized proton collisions. For several years now, the AGS has held the world intensity record with more than 7 x 10{sup 13} protons accelerated in a single pulse. The requirements for the proton beam for the super neutrino beam are summarized and a schematic of the upgraded AGS is shown. Since the present number of protons per fill is already close to the required number, the upgrade is based on increasing the repetition rate and reducing beam losses (to avoid excessive shielding requirements and to maintain activation of the machine components at workable level). It is also important to preserve all the present capabilities of the AGS, in particular its role as injector to RHIC. The AGS Booster was built not only to allow the injection of any species of heavy ion into the AGS but to allow a fourfold increase of the AGS intensity. It is one-quarter the circumference of the AGS with the same aperture. However, the accumulation of four Booster loads in the AGS takes about 0.6 s, and is therefore not well suited for high average beam power operation. To minimize the injection time to about 1 ms, a 1.2 GeV linac will be used instead. This linac consists of the existing warm linac of 200 MeV and a new superconducting linac of 1.0 GeV. The multi-turn H{sup -} injection from a source of 30 mA and 720 {micro}s pulse width is sufficient to accumulate 9 x 10{sup 13} particle per pulse in the AGS[10]. The minimum ramp time of the AGS to full energy is presently 0.5 s; this must be upgraded to 0.2 s to reach the required repetition rate of 2.5 Hz. The required upgrade of the AGS power supply, the rf system, and other rate dependent accelerator issues is discussed. The design of the target/horn configuration is shown. The material selected for the proton target is a Carbon-Carbon composite. It is a 3-dimensional woven material that exhibits extremely low thermal expansion for temperatures up to 1000 C; for higher temperatures it responds like graphite. This property is important for greatly reducing the thermo-elastic stresses induced by the beam, thereby extending the life of the target. The target consists of a 80 cm long cylindrical rod of 12 mm diameter. The target intercepts a 2 mm rms proton beam of 10{sup 14} protons/pulse. The total energy deposited as heat in the target is 7.3 kJ with peak temperature rise of about 280 C. Heat will be removed from the target through forced convection of helium gas across its outside surface. The extracted proton beam uses an existing beamline at the AGS, but is then directed to a target station atop a constructed earthen hill. The target is followed by a downward slopping pion decay channel. This vertical arrangement keeps the target and decay pipe well above the water table in this area. The 11.3 degrees slope aims the neutrino beam at a water Cerenkov neutrino detector to be located in the Homestake mine at Lead, South Dakota. A 3-dimensional view of the beam transport line, target station, and decay tunnel is provided.

  2. Aging and annealing effects on properties of Ag-N dual-acceptor doped ZnO thin films

    SciTech Connect (OSTI)

    Swapna, R.; Amiruddin, R.; Santhosh Kumar, M. C. [Advanced Materials Laboratory, Department of Physics, National Institute of Technology, Tiruchirappalli -620 015 (India)

    2013-02-05T23:59:59.000Z

    Ag-N dual acceptor doping into ZnO has been proposed to realize p-ZnO thin film of different concentrations (1, 2 and 4 at.%) by spray pyrolysis at 623 K and then 4 at.% films annealed at 673 K and 723 K for 1 hr. X-ray diffraction studies reveal that all the films are preferentially oriented along (002) plane. Energy dispersive spectroscopy (EDS) confirms the presence of Ag and N in 2 at.% ZnO:(Ag, N) film. Hall measurement shows that 4 at.% ZnO:(Ag, N) film achieved minimum resistivity with high hole concentration. The p-type conductivity of the ZnO:(Ag, N) films is retained even after 180 days. Photoluminescence (PL) spectra of ZnO:(Ag, N) films show low density of native defects.

  3. Preparation of grapheneAg composites and their application for electrochemical detection of chloride

    SciTech Connect (OSTI)

    Yu, Mei, E-mail: yumei@buaa.edu.cn [School of Materials Science and Engineering, Beihang University, Beijing 100191 (China)] [School of Materials Science and Engineering, Beihang University, Beijing 100191 (China); Liu, Pengrui; Zhang, Shilu; Liu, Jianhua; An, Junwei; Li, Songmei [School of Materials Science and Engineering, Beihang University, Beijing 100191 (China)] [School of Materials Science and Engineering, Beihang University, Beijing 100191 (China)

    2012-11-15T23:59:59.000Z

    Highlights: ? GrapheneAg composites were prepared in situ using ascorbic acid as green reducing agent. ? The morphology of Ag particles was irregular sheet and Ag particles homogeneously distributed on the graphene matrix. ? The surface-enhanced Raman scattering enhancement factor of D band is 5.85 for composites. ? The composites exhibited good sensitivity for the detection of chloride ions. -- Abstract: GrapheneAg composites were prepared in situ using ascorbic acid as green reducing agent. The composites were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), selected-area electronic diffraction (SAED), and Raman spectrometer. It was showed that Ag particles homogeneously distributed on the graphene matrix. The morphology of Ag particles was irregular sheet with (1 1 1) basal plane. The surface-enhanced Raman scattering (SERS) enhancement factor of D band is 5.85 for composites. The application of the composites for electrochemical detection of chloride was studied by cyclic voltammetry. The composites exhibited good sensitivity for the detection of chloride ions. The maximum peak current of cyclic voltammetry curve in 5 mM KCl was 0.80 mA. In the range of 500 ?M to 50 mM for Cl{sup ?}, the current response was proportional and linear to the Cl{sup ?} concentration. The sensitivity to the detection for Cl{sup ?} was 0.059 (mA/mM) and the detection limit was 61 ?M for Cl{sup ?}. It indicates grapheneAg composites would be a competitive material for detection of halide.

  4. Progress in Solving the Elusive Ag Transport Mechanism in TRISO Coated Particles: What is new?

    SciTech Connect (OSTI)

    Isabella Van Rooyen

    2014-10-01T23:59:59.000Z

    The TRISO particle for HTRs has been developed to an advanced state where the coating withstands internal gas pressures and retains fission products during irradiation and under postulated accidents. However, one exception is Ag that has been found to be released from high quality TRISO coated particles when irradiated and can also during high temperature accident heating tests. Although out- of- pile laboratory tests have never hither to been able to demonstrate a diffusion process of Ag in SiC, effective diffusion coefficients have been derived to successfully reproduce measured Ag-110m releases from irradiated HTR fuel elements, compacts and TRISO particles It was found that silver transport through SiC does not proceed via bulk volume diffusion. Presently grain boundary diffusion that may be irradiation enhanced either by neutron bombardment or by the presence of fission products such as Pd, are being investigated. Recent studies of irradiated AGR-1 TRISO fuel using scanning transmission electron microscopy (STEM), transmission kukuchi diffraction (TKD) patterns and high resolution transmission electron microscopy (HRTEM) have been used to further the understanding of Ag transport through TRISO particles. No silver was observed in SiC grains, but Ag was identified at triple-points and grain boundaries of the SiC layer in the TRISO particle. Cadmium was also found in some of the very same triple junctions, but this could be related to silver behavior as Ag-110m decays to Cd-110. Palladium was identified as the main constituent of micron-sized precipitates present at the SiC grain boundaries and in most SiC grain boundaries and the potential role of Pd in the transport of Ag will be discussed.

  5. Ion and electron microprobe study of troctolites, norite, and anorthosites from Apollo 14: Evidence for urKREEP assimilation during petrogenesis of Apollo 14 Mg-suite rocks

    SciTech Connect (OSTI)

    Shervais, J.W.; McGee, J.J. [Univ. of South Carolina, Columbia, SC (United States). Dept. of Geological Sciences] [Univ. of South Carolina, Columbia, SC (United States). Dept. of Geological Sciences

    1998-09-01T23:59:59.000Z

    Most of the Moon`s highland crust comprises Fe-rich anorthosites with calcic plagioclase compositions. Subsequent evolution of the highland crust was dominated by troctolites, anorthosites, and norites of the Mg-suite. This plutonic series is characterized by calcic plagioclase, and mafic minerals with high mg{number_sign} (=100{sup *}Mg/[Mg + Fe]). In an effort to distinguish the origin of this important lunar rock series, the authors have analyzed the REE content of primary cumulus phases in ten Mg-suite cumulates using SIMS, along with their major and minor element compositions by electron microprobe analysis. Nine of these samples have high mg{number_sign}s, consistent with their formation from the most primitive parent melts of the Mg-suite. The data presented here show that Mg-suite troctolites and anorthosites preserve major and trace element characteristics acquired during their formation as igneous cumulate rocks and that these characteristics can be used to reconstruct related aspects of the parent magma composition. Data show that primitive cumulates of the Mg-suite crystallized from magmas with REE contents similar to high-K KREEP in both concentration and relative abundance. The highly enriched nature of this parent magma contrasts with its primitive major element characteristics, as pointed out by previous workers. This enigma is best explained by the mixing of residual magma ocean urKREEP melts with ultramagnesian komatiitic partial melts from the deep lunar interior. The data do not support earlier models that invoke crustal metasomatism to enrich the Mg-suite cumulates after formation, or models which call for a superKREEP parent for the troctolites and anorthosites.

  6. Radiation from Ag high energy density Z-pinch plasmas and applications to lasing

    SciTech Connect (OSTI)

    Weller, M. E., E-mail: mweller@unr.edu; Safronova, A. S.; Kantsyrev, V. L.; Esaulov, A. A.; Shrestha, I.; Stafford, A.; Keim, S. F.; Shlyaptseva, V. V.; Osborne, G. C.; Petkov, E. E. [Physics Department, University of Nevada, Reno, Nevada 89557 (United States)] [Physics Department, University of Nevada, Reno, Nevada 89557 (United States); Apruzese, J. P.; Giuliani, J. L. [Naval Research Laboratory, Washington, District of Columbia 20375 (United States)] [Naval Research Laboratory, Washington, District of Columbia 20375 (United States); Chuvatin, A. S. [Ecole Polytechnique, 91128 Palaiseau (France)] [Ecole Polytechnique, 91128 Palaiseau (France)

    2014-03-15T23:59:59.000Z

    Silver (Ag) wire arrays were recently introduced as efficient x-ray radiators and have been shown to create L-shell plasmas that have the highest electron temperature (>1.8?keV) observed on the Zebra generator so far and upwards of 30?kJ of energy output. In this paper, results of single planar wire arrays and double planar wire arrays of Ag and mixed Ag and Al that were tested on the UNR Zebra generator are presented and compared. To further understand how L-shell Ag plasma evolves in time, a time-gated x-ray spectrometer was designed and fielded, which has a spectral range of approximately 3.55.0?. With this, L-shell Ag as well as cold L{sub ?} and L{sub ?} Ag lines was captured and analyzed along with photoconducting diode (PCD) signals (>0.8?keV). Along with PCD signals, other signals, such as filtered XRD (>0.2?keV) and Si-diodes (SiD) (>9?keV), are analyzed covering a broad range of energies from a few eV to greater than 53?keV. The observation and analysis of cold L{sub ?} and L{sub ?} lines show possible correlations with electron beams and SiD signals. Recently, an interesting issue regarding these Ag plasmas is whether lasing occurs in the Ne-like soft x-ray range, and if so, at what gains? To help answer this question, a non-local thermodynamic equilibrium (LTE) kinetic model was utilized to calculate theoretical lasing gains. It is shown that the Ag L-shell plasma conditions produced on the Zebra generator at 1.7 maximum current may be adequate to produce gains as high as 6?cm{sup ?1} for various 3p???3s transitions. Other potential lasing transitions, including higher Rydberg states, are also included in detail. The overall importance of Ag wire arrays and plasmas is discussed.

  7. Ab-Initio Determination of Novel Crystal Structures of the Thermoelectric Material MgAgSb

    SciTech Connect (OSTI)

    Kirkham, Melanie J [ORNL; Moreira Dos Santos, Antonio F [ORNL; Rawn, Claudia J [ORNL; Lara-Curzio, Edgar [ORNL; Sharp, Jeff W. [Marlow Industries, Inc; Thompson, Alan [Marlow Industries, Inc

    2012-01-01T23:59:59.000Z

    Materials with the half-Heusler structure possess interesting electrical and magnetic properties, including potential for thermoelectric applications. MgAgSb is compositionally and structurally related to many half-Heusler materials, but has not been extensively studied. This work presents the high-temperature X-ray diffraction analysis of MgAgSb between 27 and 420 C, complemented with thermoelectric property measurements. MgAgSb is found to exist in three different structures in this temperature region, taking the half-Heusler structure at high temperatures, a Cu2Sb-related structure at intermediate temperatures, and a previously unreported tetragonal structure at room temperature. All three structures are related by a distorted Mg-Sb rocksalt-type sublattice, differing primarily in the Ag location among the available tetrahedral sites. Transition temperatures between the three phases correlate well with discontinuities in the Seebeck coefficient and electrical conductivity; the best performance occurs with the novel room temperature phase. For application of MgAgSb as a thermoelectric material, it may be desirable to develop methods to stabilize the room temperature phase at higher temperatures.

  8. Development of Au-Ag nanowire mesh fabrication by UV-induced approach

    SciTech Connect (OSTI)

    Saggar, Siddhartha [Laboratory for Molecular Photonics and Electronics, Department of Physics, National Institute of Technology, Calicut, Kerala, India and School of Nanoscience and Technology, National Institute of Technology, Calicut, Kerala (India); Predeep, Padmanabhan, E-mail: predeep@nitc.ac.in

    2014-10-15T23:59:59.000Z

    In an attempt to overcome the limitations of the presently prevailing transparent conducting electrode (TCE) - indium tin oxide (ITO) - many materials have been considered for replacing ITO. Recently, a novel method has been reported for the synthesis of Au-Ag nanowire (NW) mesh, and tested successfully for organic-light-emitting-diodes (OLEDs). It employs UV-induced reduction of gold- and silver- precursors to form Au-Ag NW mesh. In this report, Au-Ag NW mesh thin films are synthesized on glass substrates with an objective for use as facing-electrode for Organic Photovoltaics. Various issues and factors affecting the fabrication-process have been improved, and are also discussed here. The electrode showed good transmitivity, of around 95% (excluding that of glass substrate). The advantage of the technique is its simple processing method and cost-effectiveness.

  9. On the role of long range interactions for the adsorption of sexithiophene on Ag(110) surface

    SciTech Connect (OSTI)

    Matos, Jeronimo; Rojas, Tomas; Yildirim, Handan, E-mail: hyildirim@purdue.edu, E-mail: Abdelkader.Kara@ucf.edu; Kara, Abdelkader, E-mail: hyildirim@purdue.edu, E-mail: Abdelkader.Kara@ucf.edu [Department of Physics, University of Central Florida, Orlando, Florida, 32816 (United States)] [Department of Physics, University of Central Florida, Orlando, Florida, 32816 (United States)

    2014-04-14T23:59:59.000Z

    The adsorption characteristics of the sexithiophene (6T) molecule on Ag(110) are studied using density functional theory with the inclusion of van der Waals (vdW) interactions. The stable adsorption configurations on 6T on Ag(110) as well as the nature of bonding the Ag substrate are evaluated. We also assess the performance of the vdW-DF method in describing the adsorption, energetics, heights, as well as the interface characteristics with the Ag(110) surface. We find two lowest adsorption energy configurations, at which the 6T molecule aligns with its molecular long axis parallel and perpendicular to the [001] direction, to be energetically close to each other, suggesting that they may coexist. Our findings indicate a significant increase in the 6T adsorption energies upon the inclusion of vdW interactions with the highest increase obtained using the opt-type functionals, in particular with the optB86b-vdW functional. The revPBE-vdW and rPW86-vdW2 functionals lead to less enhancement in adsorption energies that is attributed to the strong repulsive nature of these functionals, in agreement with earlier predictions. Upon adsorption of the 6T molecule, the changes in the atomic and electronic structures of the 6T molecule and Ag surface are found to be negligible; there is no charge transfer, and no interface state is observed. The work function is reduced upon adsorption with the largest change is ?0.6 eV obtained using the optB88-vdW functional. The results are in good agreement with the available experimental observations of the adsorption configurations and the work function changes. Based on our results, we conclude that the nature of bonding for 6T on Ag(110) can be classified as strong physisorption.

  10. Ag and Au atoms intercalated in bilayer heterostructures of transition metal dichalcogenides and graphene

    SciTech Connect (OSTI)

    Iyikanat, F., E-mail: fadiliyikanat@iyte.edu.tr; Senger, R. T. [Department of Physics, Izmir Institute of Technology, 35430 Izmir (Turkey); Sahin, H., E-mail: hasan.sahin@uantwerpen.be; Peeters, F. M. [Department of Physics, University of Antwerp, 2610 Antwerp (Belgium)

    2014-09-01T23:59:59.000Z

    The diffusive motion of metal nanoparticles Au and Ag on monolayer and between bilayer heterostructures of transition metal dichalcogenides and graphene are investigated in the framework of density functional theory. We found that the minimum energy barriers for diffusion and the possibility of cluster formation depend strongly on both the type of nanoparticle and the type of monolayers and bilayers. Moreover, the tendency to form clusters of Ag and Au can be tuned by creating various bilayers. Tunability of the diffusion characteristics of adatoms in van der Waals heterostructures holds promise for controllable growth of nanostructures.

  11. Energy Saving and CO2 Reduction Concept at Lufthansa Technik AG Hamburg

    E-Print Network [OSTI]

    Fahs, J. P.

    2009-01-01T23:59:59.000Z

    -18, 2009 in Austin, Texas, USA ESL-IC-09-11-02 Proceedings of the Ninth International Conference for Enhanced Building Operations, Austin, Texas, November 17 - 19, 2009 ICEBO 2009 ? CO 2 - Reduction at Lufthansa Technik AG 10-Sep-09 Page 4 Agenda..., Austin, Texas, November 17 - 19, 2009 ICEBO 2009 ? CO 2 - Reduction at Lufthansa Technik AG 10-Sep-09 Page 9 Agenda Lufthansa ? Excellence in Aviation The Lufthansa Technik Base in Hamburg Our Environmental Responsibility EnergyCheck@LHT Case Studies...

  12. Synthesis of highly efficient antibacterial agent Ag doped ZnO nanorods: Structural, Raman and optical properties

    SciTech Connect (OSTI)

    Jan, Tariq; Iqbal, Javed, E-mail: javed.saggu@iiu.edu.pk [Laboratory of Nanoscience and Technology, Department of Physics, International Islamic University Islamabad (Pakistan); Ismail, Muhammad [Institute of Biomedical and Genetic Engineering (IBGE), Islamabad (Pakistan); Mahmood, Arshad [Nano Devices Labs, National Institute of Lasers and Optronics, Islamabad (Pakistan)

    2014-04-21T23:59:59.000Z

    Here, synthesis, structural, morphological, Raman, optical properties and antibacterial activity of undoped and Ag doped ZnO nanorods by chemical co-precipitation technique have been reported. Structural analysis has revealed that Ag doping cannot deteriorate the structure of ZnO and wurtzite phase is maintained. Lattice constants are found to be decreased with the Ag doping. Fourier transform infrared and Raman spectroscopy also confirm the X-ray diffraction results. Scanning electron microscopy results have demonstrated the formation of ZnO nanorods with average diameter and length of 96?nm and 700?nm, respectively. Raman spectroscopy results suggest that the Ag doping enhances the number of defects in ZnO crystal. It has been found from optical study that Ag doping results in positional shift of band edge absorption peak. This is attributed to the successful incorporation of Ag dopant into ZnO host matrix. The antibacterial activity of prepared nanorods has been determined by two different methods and compared to that of undoped ZnO nanorods. Ag doped ZnO nanorods exhibit excellent antibacterial activity as compared to that of undoped ZnO nanorods. This excellent antibacterial activity may be attributed to the presence of oxygen vacancies and Zn{sup 2+} interstitial defects. Our preliminary findings suggest that Ag doped ZnO nanorods can be used externally to control the spreading of infections related with tested bacterial strains.

  13. Long-term Hepatitis B Surface Antigen (HBsAg) Kinetics during Nucleoside/Nucleotide Analogue Therapy

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    -term Hepatitis B Surface Antigen (HBsAg) Kinetics during Nucleoside/Nucleotide Analogue Therapy: Finite Treatment regarding long-term HBsAg kinetics during treatment with nucleoside/nucleotide analogues is limited. The aim of the present study was to assess whether finite nucleoside/nucleotide analogue treatment duration could

  14. Thermoelectric transport of Se-rich Ag{sub 2}Se in normal phases and phase transitions

    SciTech Connect (OSTI)

    Mi, Wenlong; Lv, Yanhong [State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050 (China); CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences,1295 Dingxi Road, Shanghai 200050 (China); University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing 100049 (China); Qiu, Pengfei; Shi, Xun, E-mail: xshi@mail.sic.ac.cn, E-mail: cld@mail.sic.ac.cn; Chen, Lidong, E-mail: xshi@mail.sic.ac.cn, E-mail: cld@mail.sic.ac.cn [State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050 (China); CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences,1295 Dingxi Road, Shanghai 200050 (China); Zhang, Tiansong [CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences,1295 Dingxi Road, Shanghai 200050 (China)

    2014-03-31T23:59:59.000Z

    Small amount of Se atoms are used to tune the carrier concentrations (n{sub H}) and electrical transport in Ag{sub 2}Se. Significant enhancements in power factor and thermoelectric figure of merit (zT) are observed in the compositions of Ag{sub 2}Se{sub 1.06} and Ag{sub 2}Se{sub 1.08}. The excessive Se atoms do not change the intrinsically electron-conducting character in Ag{sub 2}Se. The detailed analysis reveals the experiment optimum carrier concentration in Ag{sub 2}Se is around 5??10{sup 18}?cm{sup ?3}. We also investigate the temperature of maximum zT and the thermoelectric transport during the first order phase transitions using the recently developed measurement system.

  15. URS Corporation | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-fTri Global Energy LLC Place: Dallas,UGIURDB Schema Documentation? Home

  16. Recommended Academic Plan for Agricultural Science Major (AG SC) University Park

    E-Print Network [OSTI]

    Omiecinski, Curtis

    Total Credits: 15 Total Credits: 15 Bold type indicates courses requiring a quality grade of C Sciences (GS) 3 Elective 1-2 Humanities (GH) 3 Total Credits: 16 Total Credits: 16.5 Semester 3 Credits Sciences (GS) 3 Natural Resources/Ecology (1) 3 Ag and Environmental Policy (1) 3 Total Credits: 15.5 Total

  17. IL DIRIGENTE VISTA la Legge 2 dicembre 1991, n. 390 Norme sul diritto agli studi universitari;

    E-Print Network [OSTI]

    ; VISTO il Regolamento per l'Amministrazione, la Finanza e la Contabilit, emanato con D.R. n. 82/AG del studenti meritevoli mediante rimborso di una parte del costo sostenuto dagli studenti interessati ad dei requisiti necessari per parteciparvi. Il rimborso previsto sar pari al 75% del costo del corso

  18. Annales Geophysicae (2004) 22: 32913297 SRef-ID: 1432-0576/ag/2004-22-3291

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    to the interaction of the radar beam with the background wind (e.g. Atlas, 1964; Hocking, 1985; Nastrom, 1997). WhileAnnales Geophysicae (2004) 22: 3291­3297 SRef-ID: 1432-0576/ag/2004-22-3291 © European Geosciences- beamwidth method and the traditional method are very sim- ilar in regions of light winds (

  19. Annales Geophysicae (2004) 22: 23012308 SRef-ID: 1432-0576/ag/2004-22-2301

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Annales Geophysicae (2004) 22: 2301­2308 SRef-ID: 1432-0576/ag/2004-22-2301 © European Geosciences populations of Correspondence to: H. Kucharek (kucharek@atlas.sr.unh.edu) backstreaming ions (e.g. Gosling et beams. Sonnerup (1969) demonstrated that solar wind protons could easily be energized if the bow shock

  20. Annales Geophysicae (2004) 22: 40434048 SRef-ID: 1432-0576/ag/2004-22-4043

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    wind produced by three different numerical models in the European-Mediterranean area is analyzed observations of surface wind to predic- tive skill seems to be overall modest (Atlas et al., 2001Annales Geophysicae (2004) 22: 4043­4048 SRef-ID: 1432-0576/ag/2004-22-4043 © European Geosciences

  1. Outstanding Ag Leader Award Presented by MSU College of Agriculture and Montana Agricultural

    E-Print Network [OSTI]

    Maxwell, Bruce D.

    Outstanding Ag Leader Award Presented by MSU College of Agriculture and Montana Agricultural Experiment Station (MAES) Criteria for Selection Be well respected in their agricultural community of achievement in agriculture, be an industry leader, or an upcoming active innovative producer (or a combination

  2. FY2014 Parameters for Gold Ions in Booster, AGS, and RHIC

    SciTech Connect (OSTI)

    Gardner, C. J. [Brookhaven National Lab. (BNL), Upton, NY (United States). Collider-Accelerator Dept.

    2014-07-30T23:59:59.000Z

    The nominal parameters for gold ions in Booster, AGS, and RHIC are given for the FY2014 running period. The parameters are worked out using various formulas to derive mass, kinetic parameters, RF parameters, ring parameters etc.. The ''standard setup'', ''medium-energy'', and ''low-energy'' parameters are summarized in separate sections.

  3. FY2014 Parameters for Helions and Gold Ions in Booster, AGS, and RHIC

    SciTech Connect (OSTI)

    Gardner, C. J. [Brookhaven National Lab. (BNL), Upton, NY (United States). Collider-Accelerator Dept.

    2014-08-15T23:59:59.000Z

    The nominal parameters for helions (helion is the bound state of two protons and one neutron. It is the nucleus of a helium-3 atom.) and gold ions in Booster, AGS, and RHIC are given for the FY2014 running period. The parameters are found using various formulas to derive mass, helion anomalous g-factor, kinetic parameters, RF parameters, ring parameters etc..

  4. AG-325 (11/12) Texas A&M AgriLife

    E-Print Network [OSTI]

    AG-325 (11/12) Texas A&M AgriLife Administrative Services Inventory/Property Texas AgriLife Research Building Record Texas A&M University Office of Facilities Coordination Building Number: Building Lightweight Metal Walls 8 Glass (Greenhouse) Location Codes: A1 Main Campus A3 Airport Area B1 West

  5. Controlled Low-Temperature Molecular Manipulation of Sexiphenyl Molecules on Ag(111) Using Scanning Tunneling Microscopy

    E-Print Network [OSTI]

    Hla, Saw-Wai

    Controlled Low-Temperature Molecular Manipulation of Sexiphenyl Molecules on Ag(111) Using Scanning; published 11 November 2004) A novel scanning tunneling microscope manipulation scheme for a controlled displaced during imag- ing and often dragged with the STM tip [17]. Atomically controlled manipulation

  6. Valence band structure of the icosahedral Ag-In-Yb quasicrystal

    SciTech Connect (OSTI)

    Sharma, H. R.; Simutis, G.; Dhanak, V. R.; Nugent, P. J.; McGrath, R. [Surface Science Research Centre and Department of Physics, University of Liverpool, Liverpool L69 3BX (United Kingdom); Cui, C. [Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577 (Japan); Shimoda, M. [National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047 (Japan); Tsai, A. P. [Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577 (Japan); National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047 (Japan); Ishii, Y. [Department of Physics, Chuo University, Kasuga, Tokyo 112-8551 (Japan)

    2010-03-01T23:59:59.000Z

    The valence band structure of the icosahedral (i) Ag-In-Yb quasicrystal, which is isostructural to the binary i-Cd-Yb system, is investigated by ultraviolet photoemission spectroscopy (UPS). Experimental results are compared with electronic-structure calculations of a cubic approximant of the same phase. UPS spectra from the fivefold, threefold, and twofold i-Ag-In-Yb surfaces reveal that the valence band near to the Fermi level is dominated by Yb 4f-derived states, in agreement with calculations. The spectra also exhibit peaks which are surface core level shifted, caused by changes in the electronic structure in surface layers. Calculations yield a pseudogap in the density of states due to a hybridization of the Yb 5d band with the Ag 5p and In 5p bands. Both experimental and calculated band features are very similar to those of Cd-Yb. The modification of the band structure after surface treatment by sputtering and by oxidation is also studied. Additionally, the work function of i-Ag-In-Yb measured from the width of UPS spectrum is found to be almost unaffected by surface orientation, but increases after sputtering or oxidation.

  7. Crop & Soil Science Seminar Series Mondays at 4:00 pm in Ag Life Sciences

    E-Print Network [OSTI]

    Tullos, Desiree

    Crop & Soil Science Seminar Series Fall 2013 Mondays at 4:00 pm in Ag Life Sciences 4000 September 30 NO SEMINAR October 7 Dan Sullivan Crop & Soil Science Dept. "Phosphorus: Now and Then" October 14/CSSA/SSSA meetings) November 11 Chris Klatt Crop & Soil Science Dept. "Tracking Microbial Use of C and N

  8. Effects of stretching and cycling on the fatigue behavior of polymer-supported Ag thin films

    E-Print Network [OSTI]

    Effects of stretching and cycling on the fatigue behavior of polymer-supported Ag thin films Gi March 2013 Keywords: Fatigue Thin films Fatigue crack initiation Intergranular failure Ductile fracture on characterizing the mechanical behavior of thin metal films and have observed that metals in thin-film form can

  9. Efficiency improvement of phosphorescent organic light-emitting diodes using semitransparent Ag as anode

    E-Print Network [OSTI]

    Efficiency improvement of phosphorescent organic light-emitting diodes using semitransparent Ag The emission efficiency in an organic light-emitting diode OLED based on fac tris phenyl pyridine iridium Ir current efficiency of 81 cd/A and a power efficiency of 79 lm/W, compared with 46 cd/A and 39 lm

  10. AG-704 (5/14) Texas A&M AgriLife

    E-Print Network [OSTI]

    Grant Remove Export: Records Management: Edit Text: View Audit Records: Other changes/notes regardingAG-704 (5/14) Texas A&M AgriLife Administrative Services Risk and Compliance Document Management System-User Access Form TEXAS A&M AGRILIFE DOCUMENT MANAGEMENT SYSTEM APPLICATIONS STATEMENT

  11. Photoelectrochemical hydrogen production from water/ methanol decomposition using Ag/TiO2 nanocomposite

    E-Print Network [OSTI]

    coal and gasoline [3]. Moreover, hydrogen can be used in fuel cells to generate electricity, or directly as a transportation fuel [4]. Hydrogen can be generated from hydrocarbons and water resourcesPhotoelectrochemical hydrogen production from water/ methanol decomposition using Ag/TiO2

  12. Pyrosequencing reveals higher impact of silver nanoparticles than AgD

    E-Print Network [OSTI]

    Alvarez, Pedro J.

    Pyrosequencing reveals higher impact of silver nanoparticles than AgD on the microbial community a , Mengyan Li a , James M. Tiedje b,c , Pedro J.J. Alvarez a, * a Department of Civil & Environmental Lansing, MI 48823, USA a r t i c l e i n f o Article history: Received 25 July 2013 Received in revised

  13. Integration of Laser-Welded Ag Nanowire Transparent Conducting Layers on Photovoltaic Devices (DMR-0819860)

    E-Print Network [OSTI]

    Petta, Jason

    Integration of Laser-Welded Ag Nanowire Transparent Conducting Layers on Photovoltaic Devices (DMR conducting layers in applications ranging from organic flexible electronics to rigid photovoltaics. However of a hybrid organic photovoltaic device [1]. The NWs are dispersed on the device and the network is welded

  14. AG-906 (08/11) Texas A&M AgriLife

    E-Print Network [OSTI]

    this exception: Cost prohibitive Underlying EIR technology platform not accessible Adequate skilled resourcesAG-906 (08/11) Texas A&M AgriLife Administrative Services Information Technology Electronic application Electronic Document (PDF, MS Word, PPT, etc.) Multimedia or video content Information technology

  15. CONTENT ANR @ MSU AgBioResearch 1999 DRY BEAN VARIETY CANNING TRIALS

    E-Print Network [OSTI]

    SKIP TO CONTENT ANR @ MSU AgBioResearch Home Bean Info Beet Info Directions History InfoVideos Links 1999 DRY BEAN VARIETY CANNING TRIALS MICHIGAN DRY BEAN PRODUCTION RESEARCH ADVISORY BOARD Rating 1=poor, 2=fair, 3=good, 4=above average, 5=excellent NAVY LIGHT RED KIDNEY BEANS VARIETY GRATIOT HURON 10

  16. CONTENT ANR @ MSU AgBioResearch 2000 DRY BEAN VARIETY CANNING TRIALS

    E-Print Network [OSTI]

    SKIP TO CONTENT ANR @ MSU AgBioResearch Home Bean Info Beet Info Directions History InfoVideos Links 2000 DRY BEAN VARIETY CANNING TRIALS MICHIGAN DRY BEAN PRODUCTION RESEARCH ADVISORY BOARD Rating 1=poor, 2=fair, 3=good, 4=above average, 5=excellent NAVY LIGHT RED KIDNEY BEANS VARIETY GRATIOT HURON 10

  17. Chemical Engineering Journal 97 (2004) 241248 Effects of Pt and Ag on the photocatalytic degradation

    E-Print Network [OSTI]

    Gulari, Erdogan

    Chemical Engineering Journal 97 (2004) 241­248 Effects of Pt and Ag on the photocatalytic, Thailand b Department of Chemical Engineering, The University of Michigan, Ann Arbor, MI 48109, USA, Erdogan Gularib a The Petroleum and Petrochemical College, Chulalongkorn University, Bangkok 10330

  18. Crawford:Apollo legAcy 6.24 A&G December 2012 Vol. 53

    E-Print Network [OSTI]

    Crawford, Ian

    Crawford:Apollo legAcy 6.24 A&G December 2012 Vol. 53 On the 40th anniversary of the last human expedition to the Moon, Ian Crawford reviews the scientific legacy of the Apollo programme and argues and Harrison "Jack" Schmitt of Apollo 17 left the lunar surface and returned safely to Earth. This anniversary

  19. PdAgAu alloy with high resistance to corrosion by H{sub 2}S

    SciTech Connect (OSTI)

    Braun, Fernando; Miller, James B.; Gellman, Andrew J.; Tarditi, Ana M.; Fleutot, Benoit; Petro, Kondratyuk, Cornaglia, Laura M

    2012-12-01T23:59:59.000Z

    PdAgAu alloy films were prepared on porous stainless steel supports by sequential electroless deposition. Two specific compositions, Pd{sub 83}Ag{sub 2}Au{sub 15} and Pd{sub 74}Ag{sub 14}Au{sub 12}, were studied for their sulfur tolerance. The alloys and a reference Pd foil were exposed to 1000 H{sub 2}S/H{sub 2} at 623 K for periods of 3 and 30 hours. The microstructure, morphology and bulk composition of both nonexposed and H{sub 2}S-exposed samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS). XRD and SEM analysis revealed time-dependent growth of a bulk Pd{sub 4}S phase on the Pd foil during H{sub 2}S exposure. In contrast, the PdAgAu ternary alloys displayed the same FCC structure before and after H{sub 2}S exposure. In agreement with the XRD and SEM results, sulfur was not detected in the bulk of either ternary alloy samples by EDS, even after 30 hours of H{sub 2}S exposure. X-ray photoelectron spectroscopy (XPS) depth profiles were acquired for both PdAgAu alloys after 3 and 30 hours of exposure to characterize sulfur contamination near their surfaces. Very low S 2p and S 2s XPS signals were observed at the top-surfaces of the PdAgAu alloys, and those signals disappeared before the etch depth reached ~ 10 nm, even for samples exposed to H{sub 2}S for 30 hours. The depth profile analyses also revealed silver and gold segregation to the surface of the alloys; preferential location of Au on the alloys surface may be related to their resistance to bulk sulfide formation. In preliminary tests, a PdAgAu alloy membrane displayed higher initial H{sub 2} permeability than a similarly prepared pure Pd sample and, consistent with resistance to bulk sulfide formation, lower permeability loss in H{sub 2}S than pure Pd.

  20. Improvement plans for the RHIC/AGS on-line model environments

    SciTech Connect (OSTI)

    Brown,K.A.; Ahrens, L.; Beebe-Wang, J.; Morris, J.; Nemesure, S.; Robert-Demolaize, G.; Satogata, T.; Schoefer, V.; Tepikian, S.

    2009-08-31T23:59:59.000Z

    The on-line models for Relativistic Ion Collider (RHIC) and the RHIC pre-injectors (the AGS and the AGS Booster) can be thought of as containing our best collective knowledge of these accelerators. As we improve these on-line models we are building the framework to have a sophisticated model-based controls system. Currently the RHIC on-line model is an integral part of the controls system, providing the interface for tune control, chromaticity control, and non-linear chromaticity control. What we discuss in this paper is our vision of the future of the on-line model environment for RHIC and the RHIC preinjectors. Although these on-line models are primarily used as Courant-Snyder parameter calculators using live machine settings, we envision expanding these environments to encompass many other problem domains.

  1. Synthesis and transport property of AgSbTe{sub 2} as a promising thermoelectric compound

    SciTech Connect (OSTI)

    Wang Heng; Li Jingfeng; Zou Minmin; Sui Tao [State Key Laboratory of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084 (China)

    2008-11-17T23:59:59.000Z

    Polycrystalline AgSbTe{sub 2} ternary compound materials with high phase purity were fabricated using a combined process of mechanical alloying and spark plasma sintering. It was found that stoichiometric AgSbTe{sub 2} is a promising composition for low-and-mediate temperature applications, whose ZT reaches 1.59 at 673 K, benefiting from its extremely low thermal conductivity (0.30 W/mK) in addition to its low electrical resistivity (<1.1x10{sup -4} {omega} m) and large positive Seebeck coefficient (260 {mu}V/K). On the other hand, deviating from this formula would lead to unstable phase structures and higher thermal conductivity, which make the samples less attractive as thermoelectric materials or components of thermoelectric systems.

  2. Optical and electronic properties of mixed Ag-Au tetramer cations

    SciTech Connect (OSTI)

    Shayeghi, A., E-mail: shayeghi@cluster.pc.chemie.tu-darmstadt.de; Schfer, R. [Eduard-Zintl-Institut, Technische Universitt Darmstadt, Alarich-Weiss-Strae 8, 64287 Darmstadt (Germany)] [Eduard-Zintl-Institut, Technische Universitt Darmstadt, Alarich-Weiss-Strae 8, 64287 Darmstadt (Germany); Heard, C. J.; Johnston, R. L. [School of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT (United Kingdom)] [School of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT (United Kingdom)

    2014-02-07T23:59:59.000Z

    We present experimental and theoretical studies of the optical response of mixed Ag {sub n} Au {sub 4?n}{sup +} (n=13) clusters in the photon energy range ?? = 1.93.5 eV. Absorption spectra are recorded by a newly built longitudinal molecular beam depletion spectroscopy apparatus providing lower limits to absolute photodissociation cross sections. The experimental data are compared to optical response calculations in the framework of long-range corrected time-dependent density functional theory with initial cluster geometries obtained by the unbiased Birmingham Cluster Genetic Algorithm coupled with density functional theory. Experiments and excited state calculations shed light on the structural and electronic properties of the mixed Ag-Au tetramer cations.

  3. as Ag Biotech Lived Up to Its Promise? (and what should the scientific community do about it?)

    E-Print Network [OSTI]

    Clark, E. Ann

    H as Ag Biotech Lived Up to Its Promise? (and what should the scientific community do about it?) E that conventional plant breeding could do - and better. He also had a section entitled Standing Up

  4. Assessing Youth Perceptions and Knowledge of Agriculture: The Impact of Participating in an AgVenture Program

    E-Print Network [OSTI]

    Luckey, Alisa

    2012-07-16T23:59:59.000Z

    Agriculture touches the lives of individuals every day, and some do not even realize it. As a means to educate society, agricultural education programs, such as "AgVenture," have been established to educate youth about the importance of agriculture...

  5. Underpotential deposition of Ag adlayers on Pt(111): Structures and determination of O{sub 2} adsorption on Pt(111)

    SciTech Connect (OSTI)

    Marinkovic, N.S.; Wang, J.X.; Adzic, R.R.

    1997-09-01T23:59:59.000Z

    The structure of Ag adlayers deposited at underpotentials in sulfuric acid on Pt(111), and the inhibition of O{sub 2} reduction they cause, have been studied using grazing incident angle x-ray diffraction measurements, as well as linear sweep voltammetry and in situ FTIR spectroscopy. Ag forms a hexagonal incommensurate bilayer, with two mutually commensurate monolayers. It is aligned with the Pt(111) substrate, although slightly expanded. The first monolayer has a commensurate (1 x 1) structure. A second layer causes a restructuring of the first monolayer. Deposition of each monolayer is associated with one voltammetry Peak. A complete inhibition of O{sub 2} reduction on Pt(111) has been observed upon deposition of both, Ag monolayer and bilayer. Analysis of the inhibition of O{sub 2} reduction as a function of the Ag coverage shows that during reduction O{sub 2} adsorbs in a bridge configuration on Pt(111).

  6. A model of the AGS based on stepwise ray-tracing through the measured field maps of the main magnets

    SciTech Connect (OSTI)

    Dutheil Y.; Meot, F.; Tsoupas, N.

    2012-05-20T23:59:59.000Z

    Two-dimensional mid-plane magnetic field maps of two of the main AGS magnets were produced, from Hall probe measurements, for a series of different current settings. The analysis of these data yielded the excitation functions [1] and the harmonic coefficients [2] of the main magnets which have been used so far in all the models of the AGS. The constant increase of the computation power makes it possible today to directly use a stepwise raytracing through these measured field maps with a reasonable computation time. We describe in detail how these field maps have allowed the generation of models of the 6 different types of AGS main magnets, and how they are being handled with the Zgoubi ray-tracing code [3]. We give and discuss a number of results obtained regarding both beam and spin dynamics in the AGS, and we provide comparisons with other numerical and analytical modelling methods.

  7. Electrodeposited Ag-Stabilization Layer for High Temperature Superconducting Coated Conductors: Preprint

    SciTech Connect (OSTI)

    Bhattacharya, R. N.; Mann, J.; Qiao, Y.; Zhang, Y.; Selvamanickam, V.

    2010-11-01T23:59:59.000Z

    We developed a non-aqueous based electrodepostion process of Ag-stabilization layer on YBCO superconductor tapes. The non-aqueous electroplating solution is non-reactive to the HTS layer thus does not detoriate the critical current capability of the superconductor layer when plated directly on the HTS tape. The superconducting current capabilities of these tapes were measured by non-contact magnetic measurements.

  8. Mobility with Hydrogen Fuel Cells Becomes Reality! 2Daimler AG / 09.02.2012

    E-Print Network [OSTI]

    California at Davis, University of

    Electric Vehicles, Plug-in Hybrids and Fuel Cell Electric Vehicles" -95% CO2 reduction by 2050 [g CO2/km #12;7Daimler AG / 06.06.2012 The Current Generation of Fuel Cell Vehicles ­ "Driving the Future" has Become Reality Technical Data Vehicle Mercedes-Benz B-Class F-CELL Fuel Cell System PEM, 80 kW (122 hp

  9. Laying the groundwork at the AGS: Recent results from experiment E895

    E-Print Network [OSTI]

    E895 Collaboration; M. A. Lisa; N. N. Ajitanand; J. M. Alexander; M. Anderson; D. Best; F. P. Brady; T. Case; W. Caskey; D. Cebra; J. L. Chance; P. Chung; B. Cole; K. Crowe; A. C. Das; J. E. Draper; M. L. Gilkes; S. Gushue; M. Heffner; A. S. Hirsch; E. L. Hjort; L. Huo; M. Justice; M. Kaplan; D. Keane; J. C. Kintner; J. Klay; D. Krofcheck; R. A. Lacey; C. Law; J. Lauret; H. Liu; Y. M. Liu; R. McGrath; Z. Milosevich; G. Odyniec; D. L. Olson; S. Y. Panitkin; C. Pinkenburg; N. T. Porile; G. Rai; H. G. Ritter; J. L. Romero; R. Scharenberg; L. Schroeder; B. Srivastava; N. T. B. Stone; T. J. M. Symons; S. Wang; R. Wells; J. Whitfield; T. Wienold; R. Witt; L. Wood; W. N. Zhang

    2001-04-11T23:59:59.000Z

    The E895 Collaboration at the Brookhaven AGS has performed a systematic investigation of Au+Au collisions at 2-8 AGeV, using a large-acceptance Time Projection Chamber. In addition to extensive measurements of particle flow, spectra, two-particle interferometry, and strangeness production, we have performed novel hybrid analyses, including azimuthally-sensitive pion HBT, extraction of the six-dimensional pion phasespace density, and a first measurement of the Lambda-proton correlation function.

  10. Spin tracking simulations in AGS based on ray-tracing methods - bare lattice, no snakes -

    SciTech Connect (OSTI)

    Meot, F.; Ahrens, L.; Gleen, J.; Huang, H.; Luccio, A.; MacKay, W. W.; Roser, T.; Tsoupas, N.

    2009-09-01T23:59:59.000Z

    This Note reports on the first simulations of and spin dynamics in the AGS using the ray-tracing code Zgoubi. It includes lattice analysis, comparisons with MAD, DA tracking, numerical calculation of depolarizing resonance strengths and comparisons with analytical models, etc. It also includes details on the setting-up of Zgoubi input data files and on the various numerical methods of concern in and available from Zgoubi. Simulations of crossing and neighboring of spin resonances in AGS ring, bare lattice, without snake, have been performed, in order to assess the capabilities of Zgoubi in that matter, and are reported here. This yields a rather long document. The two main reasons for that are, on the one hand the desire of an extended investigation of the energy span, and on the other hand a thorough comparison of Zgoubi results with analytical models as the 'thin lens' approximation, the weak resonance approximation, and the static case. Section 2 details the working hypothesis : AGS lattice data, formulae used for deriving various resonance related quantities from the ray-tracing based 'numerical experiments', etc. Section 3 gives inventories of the intrinsic and imperfection resonances together with, in a number of cases, the strengths derived from the ray-tracing. Section 4 gives the details of the numerical simulations of resonance crossing, including behavior of various quantities (closed orbit, synchrotron motion, etc.) aimed at controlling that the conditions of particle and spin motions are correct. In a similar manner Section 5 gives the details of the numerical simulations of spin motion in the static case: fixed energy in the neighboring of the resonance. In Section 6, weak resonances are explored, Zgoubi results are compared with the Fresnel integrals model. Section 7 shows the computation of the {rvec n} vector in the AGS lattice and tuning considered. Many details on the numerical conditions as data files etc. are given in the Appendix Section, pages A and sqs.

  11. Evidence for graphite-like hexagonal AlN nanosheets epitaxially grown on single crystal Ag(111)

    SciTech Connect (OSTI)

    Tsipas, P.; Kassavetis, S.; Tsoutsou, D.; Xenogiannopoulou, E.; Golias, E.; Giamini, S. A.; Dimoulas, A. [National Center for Scientific Research Demokritos, 15310 Athens (Greece)] [National Center for Scientific Research Demokritos, 15310 Athens (Greece); Grazianetti, C.; Fanciulli, M. [Laboratorio MDM, IMM-CNR, I-20864, Agrate Brianza (MB) (Italy) [Laboratorio MDM, IMM-CNR, I-20864, Agrate Brianza (MB) (Italy); Dipartimento di Scienza dei Materiali, Universit degli Studi di Milano Bicocca, I-20126, Milano (Italy); Chiappe, D.; Molle, A. [Laboratorio MDM, IMM-CNR, I-20864, Agrate Brianza (MB) (Italy)] [Laboratorio MDM, IMM-CNR, I-20864, Agrate Brianza (MB) (Italy)

    2013-12-16T23:59:59.000Z

    Ultrathin (sub-monolayer to 12 monolayers) AlN nanosheets are grown epitaxially by plasma assisted molecular beam epitaxy on Ag(111) single crystals. Electron diffraction and scanning tunneling microscopy provide evidence that AlN on Ag adopts a graphite-like hexagonal structure with a larger lattice constant compared to bulk-like wurtzite AlN. This claim is further supported by ultraviolet photoelectron spectroscopy indicating a reduced energy bandgap as expected for hexagonal AlN.

  12. Silver (Ag) Transport Mechanisms in TRISO coated particles: A Critical Review

    SciTech Connect (OSTI)

    I J van Rooyen; J H Neethling; J A A Engelbrecht; P M van Rooyen; G Strydom

    2012-10-01T23:59:59.000Z

    Transport of 110mAg in the intact SiC layer of TRISO coated particles has been studied for approximately 30 years without arriving at a satisfactory explanation of the transport mechanism. In this paper the possible mechanisms postulated in previous experimental studies, both in-reactor and out-of reactor research environment studies are critically reviewed and of particular interest are relevance to very high temperature gas reactor operating and accident conditions. Among the factors thought to influence Ag transport are grain boundary stoichiometry, SiC grain size and shape, the presence of free silicon, nano-cracks, thermal decomposition, palladium attack, transmutation products, layer thinning and coated particle shape. Additionally new insight to nature and location of fission products has been gained via recent post irradiation electron microscopy examination of TRISO coated particles from the DOEs fuel development program. The combined effect of critical review and new analyses indicates a direction for investigating possible the Ag transport mechanism including the confidence level with which these mechanisms may be experimentally verified.

  13. Silver (Ag) Transport Mechanisms in TRISO Coated Particles: A Critical Review

    SciTech Connect (OSTI)

    IJ van Rooyen; ML Dunzik-Gougar; PM van Rooyen

    2014-05-01T23:59:59.000Z

    Transport of 110mAg in the intact SiC layer of TRISO coated particles has been studied for approximately 30 years without arriving at a satisfactory explanation of the transport mechanism. In this paper the possible mechanisms postulated in previous experimental studies, both in-reactor and out-of reactor research environment studies are critically reviewed and of particular interest are relevance to very high temperature gas reactor operating and accident conditions. Among the factors thought to influence Ag transport are grain boundary stoichiometry, SiC grain size and shape, the presence of free silicon, nano-cracks, thermal decomposition, palladium attack, transmutation products, layer thinning and coated particle shape. Additionally new insight to nature and location of fission products has been gained via recent post irradiation electron microscopy examination of TRISO coated particles from the DOEs fuel development program. The combined effect of critical review and new analyses indicates a direction for investigating possible the Ag transport mechanism including the confidence level with which these mechanisms may be experimentally verified.

  14. Dynamic XPS measurements of ultrathin polyelectrolyte films containing antibacterial AgCu nanoparticles

    SciTech Connect (OSTI)

    Taner-Camc?, Merve; Suzer, Sefik, E-mail: suzer@fen.bilkent.edu.tr [Department of Chemistry, Bilkent University, 06800 Ankara (Turkey)

    2014-03-15T23:59:59.000Z

    Ultrathin films consisting of polyelectrolyte layers prepared by layer-by-layer deposition technique and containing also Ag and Cu nanoparticles exhibit superior antibacterial activity toward Escherichia coli. These films have been investigated with XPS measurements under square wave excitation at two different frequencies, in order to further our understanding about the chemical/physical nature of the nanoparticles. Dubbed as dynamical XPS, such measurements bring out similarities and differences among the surface structures by correlating the binding energy shifts of the corresponding XPS peaks. Accordingly, it is observed that the Cu2p, Ag3d of the metal nanoparticles, and S2p of cysteine, the stabilizer and the capping agent, exhibit similar shifts. On the other hand, the C1s, N1s, and S2p peaks of the polyelectrolyte layers shift differently. This finding leads us the claim that the Ag and Cu atoms are in a nanoalloy structure, capped with cystein, as opposed to phase separated entities.

  15. AGS SUPER NEUTRINO BEAM FACILITY ACCELERATOR AND TARGET SYSTEM DESIGN (NEUTRINO WORKING GROUP REPORT-II).

    SciTech Connect (OSTI)

    DIWAN,M.; MARCIANO,W.; WENG,W.; RAPARIA,D.

    2003-04-21T23:59:59.000Z

    This document describes the design of the accelerator and target systems for the AGS Super Neutrino Beam Facility. Under the direction of the Associate Laboratory Director Tom Kirk, BNL has established a Neutrino Working Group to explore the scientific case and facility requirements for a very long baseline neutrino experiment. Results of a study of the physics merit and detector performance was published in BNL-69395 in October 2002, where it was shown that a wide-band neutrino beam generated by a 1 MW proton beam from the AGS, coupled with a half megaton water Cerenkov detector located deep underground in the former Homestake mine in South Dakota would be able to measure the complete set of neutrino oscillation parameters: (1) precise determination of the oscillation parameters {Delta}m{sub 32}{sup 2} and sin{sup 2} 2{theta}{sub 32}; (2) detection of the oscillation of {nu}{sub {mu}}-{nu}{sub e} and measurement of sin{sup 2} 2{theta}{sub 13}; (3) measurement of {Delta}m{sub 21}{sup 2} sin 2{theta}{sub 12} in a {nu}{sub {mu}} {yields} {nu}{sub e} appearance mode, independent of the value of {theta}{sub 13}; (4) verification of matter enhancement and the sign of {Delta}m{sub 32}{sup 2}; and (5) determination of the CP-violation parameter {delta}{sub CP} in the neutrino sector. This report details the performance requirements and conceptual design of the accelerator and the target systems for the production of a neutrino beam by a 1.0 MW proton beam from the AGS. The major components of this facility include a new 1.2 GeV superconducting linac, ramping the AGS at 2.5 Hz, and the new target station for 1.0 MW beam. It also calls for moderate increase, about 30%, of the AGS intensity per pulse. Special care is taken to account for all sources of proton beam loss plus shielding and collimation of stray beam halo particles to ensure equipment reliability and personal safety. A preliminary cost estimate and schedule for the accelerator upgrade and target system are also included.

  16. Enhanced photoresponse of conformal TiO{sub 2}/Ag nanorod array-based Schottky photodiodes fabricated via successive glancing angle and atomic layer deposition

    SciTech Connect (OSTI)

    Haider, Ali; Biyikli, Necmi, E-mail: biyikli@unam.bilkent.edu.tr [National Nanotechnology Research Center (UNAM), Bilkent University, Bilkent, Ankara 06800, Turkey and Institute of Materials Science and Nanotechnology, Bilkent University, Bilkent, Ankara 06800 (Turkey); Cansizoglu, Hilal; Cansizoglu, Mehmet Fatih; Karabacak, Tansel [Department of Physics and Astronomy, University of Arkansas at Little Rock, Little Rock, Arkansas 72204 (United States); Okyay, Ali Kemal [National Nanotechnology Research Center (UNAM), Bilkent University, Bilkent, Ankara 06800 (Turkey); Institute of Materials Science and Nanotechnology, Bilkent University, Bilkent, Ankara 06800 (Turkey); Department of Electrical and Electronics Engineering, Bilkent University, Bilkent, Ankara 06800 (Turkey)

    2015-01-01T23:59:59.000Z

    In this study, the authors demonstrate a proof of concept nanostructured photodiode fabrication method via successive glancing angle deposition (GLAD) and atomic layer deposition (ALD). The fabricated metal-semiconductor nanorod (NR) arrays offer enhanced photoresponse compared to conventional planar thin-film counterparts. Silver (Ag) metallic NR arrays were deposited on Ag-film/Si templates by utilizing GLAD. Subsequently, titanium dioxide (TiO{sub 2}) was deposited conformally on Ag NRs via ALD. Scanning electron microscopy studies confirmed the successful formation of vertically aligned Ag NRs deposited via GLAD and conformal deposition of TiO{sub 2} on Ag NRs via ALD. Following the growth of TiO{sub 2} on Ag NRs, aluminum metallic top contacts were formed to complete the fabrication of NR-based Schottky photodiodes. Nanostructured devices exhibited a photo response enhancement factor of 1.49??10{sup 2} under a reverse bias of 3 V.

  17. Design of highly ordered Ag-SrTiO{sub 3} nanotube arrays for photocatalytic degradation of methyl orange

    SciTech Connect (OSTI)

    Sun Yue [Key Laboratory of Design and Synthesis of Functional Materials and Green Catalysis, Colleges of Heilongjiang Province, College of Chemistry and Chemical Engineering, Harbin Normal University, Harbin 150025 (China); Liu Jiawen, E-mail: jiawenliu@yahoo.com.cn [Key Laboratory of Design and Synthesis of Functional Materials and Green Catalysis, Colleges of Heilongjiang Province, College of Chemistry and Chemical Engineering, Harbin Normal University, Harbin 150025 (China); Li Zhonghua, E-mail: lizh@hit.edu.cn [Key Laboratory of Microsystems and Microstructures Manufacturing, Ministry of Education, Harbin Institute of Technology, Harbin 150001 (China)

    2011-08-15T23:59:59.000Z

    Ag-SrTiO{sub 3} nanotube arrays were successfully prepared for the degradation of methyl orange (MO) under ultraviolet irradiation. In order to form highly ordered SrTiO{sub 3} nanotube arrays, the preparation of TiO{sub 2} nanotube arrays by anodic oxidation of titanium foil in different electrolytes was investigated. The selected organic solvents in electrolytes include glycerol, dimethyl sulfoxide and glycol. The results indicate that the morphology of TiO{sub 2} nanotube arrays prepared in glycol containing ammonium fluoride electrolyte is more regular. Then SrTiO{sub 3} nanotube arrays were synthesized by a hydrothermal method using TiO{sub 2} nanotube arrays as the precursor. In order to further improve the photocatalytic activity of SrTiO{sub 3} nanotube arrays, Ag nanoparticles were loaded on SrTiO{sub 3} nanotube arrays by two sets of experiments. The loaded Ag results in an enhancement of photocatalytic activity of SrTiO{sub 3} nanotube arrays. Moreover, the effect of pH on the photocatalytic degradation of MO was also studied. - Graphical abstract: Ag-SrTiO{sub 3} nanotube arrays were successfully prepared. The photocatalytic activity was evaluated by degradation of methyl orange under ultraviolet irradiation. Highlights: > TiO{sub 2} nanotube arrays prepared in glycol+NH{sub 4}F electrolyte are more regular. > Highly ordered Ag-SrTiO{sub 3} nanotube arrays were successfully synthesized. > Ag loading could enhance the photocatalytic activity of SrTiO{sub 3} nanotube arrays. > Ag-SrTiO{sub 3} nanotube arrays show excellent catalytic activity at a low pH value.

  18. SPECTRES DE RFLEXION ET CONSTANTES OPTIQUES DE LA PROUSTITE (Ag3AsS3) ENTRE 14 ET 600 cm-1

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    L-95 SPECTRES DE R?FLEXION ET CONSTANTES OPTIQUES DE LA PROUSTITE (Ag3AsS3) ENTRE 14 ET 600 cm-1, accepte le 6 janvier 1977) Résumé. 2014 Les constantes optiques de la proustite (Ag3AsS3), à 300 K et à 80 Optical constants of proustite (Ag3AsS3) are determined from 18 to 700 03BCm by Kra- mers-Kronig analysis

  19. Unexpected behaviour of one Pb monolayer deposited on aluminum oxide thin film grown on Ag(111)

    SciTech Connect (OSTI)

    Vizzini, Sbastien, E-mail: sebastien.vizzini@im2np.fr; Bertoglio, M. [IM2NP CNRS, Aix Marseille Universit, F-13397 Marseille (France)] [IM2NP CNRS, Aix Marseille Universit, F-13397 Marseille (France); Oughaddou, Hamid [Institut des Sciences Molculaires d'Orsay, ISMO CNRS, Universit de Paris, F-91405 Orsay, France and Deptartamento de Physique, Universit de Cergy-Pontoise, F-95031 Cergy-Pontoise (France)] [Institut des Sciences Molculaires d'Orsay, ISMO CNRS, Universit de Paris, F-91405 Orsay, France and Deptartamento de Physique, Universit de Cergy-Pontoise, F-95031 Cergy-Pontoise (France); Hoarau, J. Y.; Biberian, J. P.; Aufray, B. [CINaM CNRS, Aix Marseille Universit, F-13288 Marseille (France)] [CINaM CNRS, Aix Marseille Universit, F-13288 Marseille (France)

    2013-12-23T23:59:59.000Z

    Using scanning tunneling microscopy (STM), Auger electron spectroscopy, and low energy electron diffraction, we have observed a surprising complete dissolution at room temperature of one lead monolayer deposited by evaporation on an aluminum oxide thin film (?0.8?nm thick) previously grown on Ag (111). We have observed the quasi-instantaneous diffusion of the lead deposit through the oxide layer to the silver/oxide interface. After the diffusion process, lead atoms form a Moir superstructure, which is characterized by STM through the oxide layer. This unexpected behavior puts in light the very weak interaction between the aluminum oxide and the silver substrate.

  20. Angular dependence of metamagnetic transitions in DyAgSb2

    E-Print Network [OSTI]

    Myers, KD; Canfield, PC; Kalatsky, VA; Pokrovsky, Valery L.

    1999-01-01T23:59:59.000Z

    -dependent critical fields. Recent theoretical work2 has analyzed these data within the frame- PRB 590163-1829/99/59~2!/1121~8!/$15.00 c transitions in DyAgSb2 P. C. Canfield , Iowa State University, Ames, Iowa 50010 V. L. Pokrovsky , College Station, Texas...! are magnetic isotherm for the sample cooled to 2 K from 12 K in a 19.7 kOe field. Note: the plateau at 19.7 kOe is stabilized by field cool- PRB 59, AND POKROVSKY ing. Inset: M (T) in 19.7 kOe for increasing ~s! and decreasing temperature ~j!. O given...

  1. Hydrodynamic radial and elliptic flow in heavy-ion collisions from AGS to LHC energies

    E-Print Network [OSTI]

    Gregory Kestin; Ulrich W Heinz

    2008-11-28T23:59:59.000Z

    Using ideal relativistic hydrodynamics in 2+1 dimensions, we study the collision energy dependence of radial and elliptic flow, of the emitted hadron spectra, and of the transverse momentum dependence of several hadronic particle ratios, covering the range from Alternating Gradient Synchrotron (AGS) to Large Hadron Collider (LHC) energies. These calculations establish an ideal fluid dynamic baseline that can be used to assess non-equilibrium features manifest in future LHC heavy-ion experiments. Contrary to earlier suggestions we find that a saturation and even decrease of the differential elliptic flow v_2(p_T) with increasing collision energy cannot be unambiguously associated with the QCD phase transition.

  2. Rapidity losses in heavy-ion collisions from AGS to RHIC energies

    E-Print Network [OSTI]

    F. C. Zhou; Z. B. Yin; D. C. Zhou

    2009-09-28T23:59:59.000Z

    We study the rapidity losses in central heavy-ion collisions from AGS to RHIC energies with the mean rapidity determined from the projectile net-baryon distribution after collisions. The projectile net-baryon distribution in the full rapidity range was obtained by removing the target contribution phenomenologically at forward rapidity region from the experimental net-baryon measurements and taking into account the projectile contribution at backward rapidity region. Based on the full projectile net-baryon distributions, calculation results show that the rapidity loss stops increasing from the SPS top energy to RHIC energies, indicating that baryon transport does not depend strongly on energy at high energies.

  3. AN UPGRADE OF MAGNET-FIELD-DRIVEN TIMING SYSTEMS AT THE AGS.

    SciTech Connect (OSTI)

    TIAN, Y.; OERTER, B.

    2005-10-10T23:59:59.000Z

    An upgrade of the main magnet-field-driven timing systems at Brookhaven National Laboratory's Alternating Gradient Synchrotron (AGS) and Booster accelerators will be described in this paper. A novel approach using content addressable memory (CAM) is applied to overcome a weakness in the previous systems, which required a reproducible dwell field for proper operation. Upgraded from a multibus-based system to a VME-based system, the new timing system also proves easier to maintain and to diagnose. Details of the system architecture, as well as its application in other timing systems will be discussed.

  4. Compton-profile measurements for W, Ag, and Cu with 662-keV. gamma. rays

    SciTech Connect (OSTI)

    Heller, M.V.; Moreira, J.R.

    1986-04-01T23:59:59.000Z

    The Compton profiles of W, Ag, and Cu were measured for three scattering angles (30/sup 0/, 15/sup 0/, and 10/sup 0/) using /sup 137/Cs ..gamma.. rays. A Monte Carlo simulation was used to reproduce the experimental situation. Double-scattering events are considered in the simulation and subtracted from the single profile when necessary. Good accordance with the theoretical momentum distribution of the electron cloud was observed when relativistic wave functions quoted by Mendelsohn, Biggs, and Mann are used. This accordance was achieved only when the Ribberfors correction of the Compton profile was considered.

  5. Phoenix Solar AG formerly Phoenix SonnenStrom | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluatingGroupPerfectenergy International LimitedPhoenix Bio IndustriesPhoenix Solar AG

  6. Sovello AG formerly EverQ GmbH | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro Industries Pvt LtdShawangunk,Southeast Colorado PowerSouthwestern PublicSovello AG formerly

  7. Deutsche Solar AG formerly Bayer Solar GmbH | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model,DOE Facility DatabaseMichigan: EnergyKansas:Detroit Beach,South Dakota:EnergyAG

  8. Structural and optical properties of coreshell Ag{sub 2}S/HgS nanostructures

    SciTech Connect (OSTI)

    Basyach, Priyanka; Choudhury, Amarjyoti, E-mail: ajc@tezu.ernet.in

    2013-07-15T23:59:59.000Z

    Graphical abstract: - Highlights: Coreshell Ag{sub 2}S/HgS nanostructures are successfully synthesized. The particle size and the structure were confirmed through TEM images. The absorbance analysis reveals red shift with increasing shell concentration. A transition from TYPE 1 to TYPE 2 coreshell nanostructure is observed. - Abstract: Here we report on a two-step synthesis route for fabrication of coreshell Ag{sub 2}S/HgS nanostructures. Nanoscale Ag{sub 2}S semiconductors are prepared by a standard redox reaction using AgNO{sub 3} and CS{sub 2} as the reactants in PVP. HgS layers are developed on Ag{sub 2}S cores through S-S bonding at the interface separating the two systems. The properties of these coreshell nanostructures are studied via various spectroscopic and microscopic tools like UVVis absorption spectra, photoluminescence spectra, X-ray diffraction pattern and transmission electron microscopic images. Change in optical properties is observed while varying the shell thickness in the sample. A detailed study on the luminescence properties reveal transition from TYPE 1 to TYPE 2 coreshell nanostructures is observed with increasing shell thickness.

  9. High-pressure dissociation of silver mercury iodide, Ag{sub 2}HgI{sub 4}

    SciTech Connect (OSTI)

    Parfitt, D.C. [Department of Physics, Oxford University, Parks Road, Oxford OX1 3PU (United Kingdom); Hull, S. [ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot, OX11 0QX (United Kingdom)]. E-mail: s.hull@rl.ac.uk; Keen, D.A. [Department of Physics, Oxford University, Parks Road, Oxford OX1 3PU (United Kingdom); ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot, OX11 0QX (United Kingdom); Crichton, W. [ESRF, 6 Rue Jules Horowitz, BP 220, 38043 Grenoble CEDEX 9 (France)

    2004-10-01T23:59:59.000Z

    High-pressure X-ray diffraction has been used to probe the behavior of the superionic conductor silver mercury iodide (Ag{sub 2}HgI{sub 4}) at pressures up to 5GPa and at temperatures from 295 to 370K. Significant changes in the diffraction spectra, indicative of structural transitions, are observed around 0.7 and 1.3GPa across the range of temperatures studied. The change at 0.7GPa is shown to correspond to the dissociation of silver mercury iodide into silver iodide and mercury iodide, i.e., Ag{sub 2}HgI{sub 4}->2AgI+HgI{sub 2}. The second transition, at 1.3GPa, is due to a structural phase transition within HgI{sub 2}. Rietveld analysis of the diffraction data is used to confirm and refine all the known crystal structures.

  10. EFFECT OF IMPURITIES ON THE PERFORMANCE OF A Pd-Ag DIFFUSER

    SciTech Connect (OSTI)

    Morgan, G.

    2010-12-16T23:59:59.000Z

    A commercially fabricated diffuser purchased from Johnson-Matthey, Inc. was evaluated for performance characterization testing at the Savannah River National Laboratory (SRNL). Different impurities are often present in the feed streams of the process diffusers, but the effect of these impurities on the diffuser performance is currently unknown. Various impurities were introduced into the feed stream of the diffuser at various levels ranging from 0.5% to 10% of the total flow in order to determine the effect that these impurities have on the permeation of hydrogen through the palladium-silver membrane. The introduction of various impurities into the feed stream of the diffuser had a minimal effect on the overall permeation of hydrogen through the Pd-Ag membrane. Of the four impurities introduced into the feed stream, carbon monoxide (CO) was the only impurity that showed any evidence of causing a reduction in the amount of hydrogen permeating through the Pd-Ag membrane. The hydrogen permeation returned to its baseline level after the CO was removed from the feed stream. There were no lasting effects of the CO exposure on the ability of the membrane to effectively separate hydrogen from the non-hydrogen species in the gas stream under the conditions tested.

  11. Morphological instability of Ag films caused by phase transition in the underlying Ta barrier layer

    SciTech Connect (OSTI)

    Mardani, Shabnam, E-mail: shabnam.mardani@angstrom.uu.se; Vallin, rjan; Wtjen, Jrn Timo; Norstrm, Hans; Olsson, Jrgen; Zhang, Shi-Li, E-mail: shili.zhang@angstrom.uu.se [Solid State Electronics, The ngstrm Laboratory, Uppsala University, P.O. Box 534, SE-75121 (Sweden)

    2014-08-18T23:59:59.000Z

    Wide-bandgap (WBG) semiconductor technologies are maturing and may provide increased device performance in many fields of applications, such as high-temperature electronics. However, there are still issues regarding the stability and reliability of WBG devices. Of particular importance is the high-temperature stability of interconnects for electronic systems based on WBG-semiconductors. For metallization without proper encapsulation, morphological degradation can occur at elevated temperatures. Sandwiching Ag films between Ta and/or TaN layers in this study is found to be electrically and morphologically stabilize the Ag metallization up to 800?C, compared to 600?C for uncapped films. However, the barrier layer plays a key role and TaN is found to be superior to Ta, resulting in the best achieved stability, whereas the difference between Ta and TaN caps is negligible. The ?-to-? phase transition in the underlying Ta barrier layer is identified as the major cause responsible for the morphological instability observed above 600?C. It is shown that this phase transition can be avoided using a stacked Ta/TaN barrier.

  12. Process control techniques at the blast furnaces of Thyssen Stahl AG

    SciTech Connect (OSTI)

    Kowalski, W.; Bachhofen, H.J.; Beppler, E.; Kreibich, K.; Muelheims, K.; Peters, M.; Wieters, C.U. [Thyssen Stahl AG, Duisburg (Germany)

    1995-12-01T23:59:59.000Z

    Process improvements, capacity increases and the use of modern measuring and process control techniques have helped to ensure that the blast furnace will remain an indispensable means of supplying steelworks with hot metal until well into the next century. The survival of a future-oriented company such as Thyssen Stahl AG depends on long-term improvements in economic viability. Today, Thyssen Stahl AG operates two blast furnace plants comprising a total of five blast furnaces with hearth diameters ranging from 9.3 to 14.9m. This choice of furnaces permits flexible adjustment to changing workload situations and enables about ten million tons of hot metal to be produced each year. The wide range of measuring devices specially fitted on Schwelgern blast furnace No. 1 made a vital contribution to the development of blast furnace models. The purpose of these models was to make a general assessment of the state of the furnace and so create an objective basis for furnace operation. The paper describes the development of these measuring techniques and process model and the application of the model.

  13. Role of surface states in Auger neutralization of He{sup +} ions on Ag surfaces

    SciTech Connect (OSTI)

    Sarasola, A.; Silkin, V. M.; Arnau, A. [Fisika Aplikatua I Saila, Unibertsitate Eskola Politeknikoa, UPV/EHU, Europa Plaza 1, 20018 Donostia (Spain); Donostia International Physics Center (DIPC), Manuel de Lardizabal pasealekua 4, 20018 Donostia (Spain); Materialen Fisika Saila, Kimika Fakultatea, UPV/EHU and Centro Mixto CSIC-UPV/EHU, 1072 Posta Kutxatila, 20080 Donostia (Spain)

    2007-01-15T23:59:59.000Z

    Recent measurements of He{sup +} ion fractions that survive to a whole scatterig event when they impinge on Ag surfaces have shown two different and interesting effects: (1) a notable difference of surviving ion fraction depending on which crystallographic face of the target surface is studied [Yu. Bandurin et al., Phys. Rev. Lett. 92, 017601 (2004)], and (2) an uncommonly high ion fraction in the very-low-energy range (tens of eV) [S. Wethekam et al., Phys. Rev. Lett. 90, 037602 (2003)]. Apart from the geometry, one of the differences between the surfaces of a crystal can be seen in the electronic structure: while the (111) surface has an occupied surface state near the Fermi level at the {gamma} point the (110) and (100) faces have not. Motivated by these facts, in this work we study the role that the occupied surface state plays on the Auger neutralization rate and we present an estimation of the ion fractions that survive for the different Ag faces.

  14. Book Editors IOS Press, 2003

    E-Print Network [OSTI]

    . The ontology is constructed by extracting terms and relations from existing documents. Applying text mining for ontology extraction has an unbeatable advantage compared to man- ual ontology extraction: Text mining in different places "water level measurement device", "water level mea- suring unit", "device to measure

  15. I/O impedance controller

    DOE Patents [OSTI]

    Ruesch, Rodney; Jenkins, Philip N.; Ma, Nan

    2004-03-09T23:59:59.000Z

    There is disclosed apparatus and apparatus for impedance control to provide for controlling the impedance of a communication circuit using an all-digital impedance control circuit wherein one or more control bits are used to tune the output impedance. In one example embodiment, the impedance control circuit is fabricated using circuit components found in a standard macro library of a computer aided design system. According to another example embodiment, there is provided a control for an output driver on an integrated circuit ("IC") device to provide for forming a resistor divider network with the output driver and a resistor off the IC device so that the divider network produces an output voltage, comparing the output voltage of the divider network with a reference voltage, and adjusting the output impedance of the output driver to attempt to match the output voltage of the divider network and the reference voltage. Also disclosed is over-sampling the divider network voltage, storing the results of the over sampling, repeating the over-sampling and storing, averaging the results of multiple over sampling operations, controlling the impedance with a plurality of bits forming a word, and updating the value of the word by only one least significant bit at a time.

  16. Book Editors IOS Press, 2003

    E-Print Network [OSTI]

    Cook, Diane J.

    of this work is to design techniques for using agent-based smart home technologies to provide this at-home assistance system. We discuss one such smart environment implementa- tion in the MavHome project and present such environ- ments. Here we discuss methods by which we can adapt a smart home environment such as MavHome

  17. I/O Case Studies

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC) EnvironmentalGyroSolé(tm)Hydrogen Storage inChang Curriculum Vitae' IPublicI.Darshan

  18. PDSF I/O Monitoring

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)IntegratedSpeeding access toTest andOptimize832 2.860 2.864 2.867039 JEmail ATLASPDSF

  19. PDSF I/O Resources

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)IntegratedSpeeding access toTest andOptimize832 2.860 2.864 2.867039 JEmail

  20. SC11-IO.pptx

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's PossibleRadiation Protection245C Unlimited Release Printed March 2012B.WorkshopWebsiteOpenHick2

  1. SC11-IO.pptx

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's PossibleRadiation Protection245C Unlimited Release Printed March 2012B.WorkshopWebsiteOpenHick2*

  2. AgNIC 20th Annual Meeting 2015 "LibGuides for All with Open Access Resources"

    E-Print Network [OSTI]

    McGeachin, Bobert B.

    2015-05-01T23:59:59.000Z

    LibGuides for All with Open Access Resources Dr. Rob McGeachin 20th Annual AgNIC Meeting May 6, 2015 AgNIC Agribusiness LibGuide Repurpose a LibGuide to Another Use Easy to copy whole LibGuide and modify for another audience Copy... with content linked to original so updating the base guide corrects in child guides Both are public audiences so only include OA agricultural resources New guide aimed at high school students doing agricultural research papers Roscoe ISD STEM Rural...

  3. Nanospherical-lens lithographical Ag nanodisk arrays embedded in p-GaN for localized surface plasmon-enhanced blue light emitting diodes

    SciTech Connect (OSTI)

    Wei, Tongbo, E-mail: tbwei@semi.ac.cn; Wu, Kui; Sun, Bo; Zhang, Yonghui; Chen, Yu; Huo, Ziqiang; Hu, Qiang; Wang, Junxi; Zeng, Yiping; Li, Jinmin [State Key Laboratory of Solid-State Lighting, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, 100083 (China); Lan, Ding [National Microgravity Laboratory, Institute of Mechanics, Chinese Academy of Sciences, Beijing, 100080 (China)

    2014-06-15T23:59:59.000Z

    Large-scale Ag nanodisks (NDs) arrays fabricated using nanospherical-lens lithography (NLL) are embedded in p-GaN layer of an InGaN/GaN light-emitting diode (LED) for generating localized surface plasmon (LSP) coupling with the radiating dipoles in the quantum-well (QWs). Based on the Ag NDs with the controlled surface coverage, LSP leads to the improved crystalline quality of regrowth p-GaN, increased photoluminescence (PL) intensity, reduced PL decay time, and enhanced output power of LED. Compared with the LED without Ag NDs, the optical output power at a current of 350 mA of the LSP-enhanced LEDs with Ag NDs having a distance of 20 and 35 nm to QWs is increased by 26.7% and 31.1%, respectively. The electrical characteristics and optical properties of LEDs with embedded Ag NPs are dependent on the distance of between Ag NPs and QWs region. The LED with Ag NDs array structure is also found to exhibit reduced emission divergence, compared to that without Ag NDs.

  4. Siemens-ZIB Scholarship Program Policy The Siemens AG and the Konrad-Zuse-Zentrum fr Informationstechnik Berlin (ZIB) -in the

    E-Print Network [OSTI]

    Andrzejak, Artur

    Siemens-ZIB Scholarship Program Policy The Siemens AG and the Konrad-Zuse-Zentrum fr Hofmeister on the part of Siemens and Prof. Dr. Dr. h.c. mult. Martin Grtschel on the part of ZIB of two years, which can be extended by one more year. The scholarship holders are supported by Siemens AG

  5. Do Ag{sub n} (up to n = 8) clusters retain their identity on graphite? Insights from first-principles calculations including dispersion interactions

    SciTech Connect (OSTI)

    Singh, Akansha; Sen, Prasenjit, E-mail: prasen@hri.res.in [Harish-Chandra Research Institute, Chhatnag Road, Jhunsi, Allahabad 211019 (India)] [Harish-Chandra Research Institute, Chhatnag Road, Jhunsi, Allahabad 211019 (India); Majumder, Chiranjib [Chemistry Division, Bhabha Atomic Research Center, Trombay, Mumbai 400085 (India)] [Chemistry Division, Bhabha Atomic Research Center, Trombay, Mumbai 400085 (India)

    2014-04-28T23:59:59.000Z

    Adsorption of pre-formed Ag{sub n} clusters for n = 1 ? 8 on a graphite substrate is studied within the density functional theory employing the vdW-DF2 functional to treat dispersion interactions. Top sites above surface layer carbon atoms turn out to be most favorable for a Ag adatom, in agreement with experimental observations. The same feature is observed for clusters of almost all sizes which have the lowest energies when the Ag atoms are positioned over top sites. Most gas phase isomers retain their structures over the substrate, though a couple of them undergo significant distortions. Energetics of the adsorption can be understood in terms of a competition between energy cost of disturbing AgAg bonds in the cluster and energy gain from AgC interactions at the surface. Ag{sub 3} turns out to be an exceptional candidate in this regard that undergoes significant structural distortion and has only two of the Ag atoms close to surface C atoms in its lowest energy structure.

  6. Timing the Last Irrigation Using COTMAN in a LEPA Irrigation System at AG-CARES, Lamesa, Tommy Doederlein, Texas Cooperative Extension, Lamesa, Texas, Brant Baugh, Randy Boman

    E-Print Network [OSTI]

    Mukhtar, Saqib

    TITLE: Timing the Last Irrigation Using COTMAN in a LEPA Irrigation System at AG-CARES, Lamesa, TX past cutout in a LEPA irrigation system. AG-CARES Farm, Lamesa, Texas. 2003. Target HU Accumulation with four replications Plot size: 8 rows by 180 feet Planting Date: May 8 Variety: PM2628RR Irrigation: LEPA

  7. Mechanistic Investigation of Ethanol SCR of NOx over Ag/Al2O3

    SciTech Connect (OSTI)

    Johnson, William L [ORNL; Fisher, Galen [University of Michigan; Toops, Todd J [ORNL

    2012-01-01T23:59:59.000Z

    A 2 wt.% Ag/{gamma}-Al{sub 2}O{sub 3} catalyst was studied for the ethanol selective catalytic reduction of NO{sub x} from 200 to 550 C and space velocities between 30,000 h{sup -1} and 140,000 h{sup -1}. Peak NO{sub x} conversions reached 85% at 400 C, and an activation energy was determined to be 57 kJ/mol with a feed of ethanol to NO{sub x} or HC{sub 1}/NO{sub x} = 3. Up to 80% of the NO is oxidized to NO{sub 2} at 250 C, but overall NO{sub x} conversion is only 15%. Interestingly, ethanol oxidation occurs at much lower temperatures than NO{sub x} reduction; at 250 C, ethanol oxidation is 80% when flowing ethanol + NO + O{sub 2}. This increased reactivity, compared to only 15% when flowing only ethanol + O{sub 2}, combined with the observation that NO is not oxidized to NO{sub 2} in the absence of ethanol illustrates a synergistic relationship between the reactants. To further investigate this chemistry, a series of DRIFTS experiments were performed. To form nitrates/nitrites on the catalysts it was necessary to include ethanol in the feed with NO. These nitrates/nitrites were readily formed when flowing NO{sub 2} over the catalyst. It is proposed that ethanol adsorbs through an ethoxy-intermediate that results in atomic hydrogen on the surface. This hydrogen aids the release of NO{sub 2} from Ag to the gas-phase which, can be subsequently adsorbed at {gamma}-Al{sub 2}O{sub 3} sites away from Ag. The disappearance of these nitrates/nitrites at higher temperatures proceeds in parallel with the increase in NO{sub x} reduction reactivity between 300 and 350 C observed in the kinetic study. It is therefore proposed that the consumption of nitrates is involved in the rate determining step for this reaction.

  8. The 22nd International Photovoltaic Science and Engineering Conference, November 05-09, 2012, Hangzhou, China Now with Siemens AG, Otto-Hahn-Ring 6, D-81739 Munich, GERMANY

    E-Print Network [OSTI]

    , Hangzhou, China a Now with Siemens AG, Otto-Hahn-Ring 6, D-81739 Munich, GERMANY Reconditioning of silicon

  9. Ag:TiN NANOCOMPOSITE THIN FILMS FOR DRY EEG BIO-ELECTRODES P. Pedrosa1,2,3

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 Ag:TiN NANOCOMPOSITE THIN FILMS FOR DRY EEG BIO-ELECTRODES P. Pedrosa1,2,3 , C. Lopes3 , D their potential application as EEG bio-electrodes. The coatings were characterized regarding their composition to the common used gel pastes [3] and the risk of short-circuiting adjacent electrodes due to gel running can be

  10. Simple Vapor-Phase Synthesis of Single-Crystalline Ag Nanowires and Single-Nanowire Surface-Enhanced Raman Scattering

    E-Print Network [OSTI]

    Ihee, Hyotcherl

    in. diameter horizontal quartz tube furnace. The NWs were grown at a few centimeters downstream from downstream by the flow of 500 sccm of Ar at 5-10 Torr to a lower temperature zone (T2 ) 500 C), where Ag NWs

  11. High efficiency single Ag nanowire/p-GaN substrate Schottky junction-based ultraviolet light emitting diodes

    E-Print Network [OSTI]

    Wu, Y.; Hasan, T.; Li, X.; Xu, P.; Wang, Y.; Shen, X.; Liu, X.; Yang, Q.

    2015-02-05T23:59:59.000Z

    We report a high efficiency single Ag nanowire (NW)/p-GaN substrate Schottky junction-based ultraviolet light emitting diode (UV-LED). The device demonstrates deep UV free exciton electroluminescence at 362.5?nm. The dominant emission, detectable...

  12. Performance of Titanium-Oxide/Polymer Insulation in Bi-2212/Ag-alloy Round Wire Wound Superconducting Coils

    E-Print Network [OSTI]

    Peng Chen; Ulf P Trociewitz; Matthieu Dalban-Canassy; Jianyi Jiang; Eric E Hellstrom; David C Larbalestier

    2013-03-20T23:59:59.000Z

    Conductor insulation is one of the key components needed to make Ag-alloy clad Bi2Sr2CaCu2O8+x (Bi-2212/Ag) superconducting round wire (RW) successful for high field magnet applications as dielectric standoff and high winding current densities (Jw) directly depend on it. In this study, a TiO2/polymer insulation coating developed by nGimat LLC was applied to test samples and a high field test coil. The insulation was investigated by differential thermal analysis (DTA), thermo-gravimetric analysis (TGA), scanning electron microscopy (SEM), dielectric properties measurement, and transport critical current (Ic) properties measurement. About 29% of the insulation by weight is polymer. When the Bi-2212/Ag wire is full heat treated, this decomposes with slow heating to 400{\\deg}C in pure O2. After the full reaction, we found that the TiO2 did not degrade the critical current properties, adhered well to the conductor, and provided a breakdown voltage of >100 V, which allowed the test coil to survive quenching in 31.2 T background field, while providing a 2.6 T field increment. For Bi-2212/Ag RW with a typical diameter of 1.0-1.5 mm, this ~15 um thick insulation allows a very high coil packing factor of ~0.74, whereas earlier alumino-silicate braid insulation only allows packing factors of 0.38-0.48.

  13. Stacking-fault energies for Ag, Cu, and Ni from empirical tight-binding potentials and L. J. Lewis

    E-Print Network [OSTI]

    Entel, P.

    , Canada (Dated: July 12, 2002) The intrinsic stacking-fault energies and free energies for Ag, Cu, and Ni and thermal properties of fcc metals. In this work we study the intrinsic stacking-fault energies and free the stacking-fault free energies within the quasiharmonic approximation and to study the local effect

  14. Ag Business Student professional@yahoo.com 201 Harmony Ave. Apt.#3 Ft. Collins, CO (970) 123-4567

    E-Print Network [OSTI]

    Ag Business Student professional@yahoo.com 201 Harmony Ave. Apt.#3 Ft. Collins, CO (970) 123-4567 EDUCATION Colorado State University Ft. Collins, CO Anticipated May 2012 Dual Bachelor of Science in Animal Science and Agricultural Business Aims Community College Loveland, CO 2007 Associates of Science RELEVANT

  15. Plasma-Induced Formation of Ag Nanodots for Ultra-High-Enhancement Surface-Enhanced Raman Scattering

    E-Print Network [OSTI]

    New Mexico, University of

    . Li and S. R. J. Brueck Center for High Technology Materials, UniVersity of New Mexico, Albuquerque, New Mexico 87106 ReceiVed December 20, 2006. In Final Form: February 13, 2007 We report here plasma the patterned structures into clusters of smaller, interconnected, closely packed Ag nanoparticles (20-60 nm

  16. AgNIC Pre-conference 2011 If Its Digital and In Google Then They Will Come

    E-Print Network [OSTI]

    McGeachin, Robert B.

    2011-05-17T23:59:59.000Z

    AgNIC offers a two hour pre-conference on how to scan and digitize print items, make derivative versions, including archival PDF/A, for easy access on the Internet, create basic Dublin Core metadata, and how to add digital objects to a digital...

  17. Le gisement Ag Hg de Zgounder (Jebel Siroua, Anti-Atlas, Maroc) : un pithermal noprotrozoque de type

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Le gisement Ag Hg de Zgounder (Jebel Siroua, Anti- Atlas, Maroc) : un épithermal néoprotérozoïque Compagnie minière de Touissit (CMT), 279, bd Zerktouni, Casablanca, Maroc Abstract The Zgounder ore deposit and more as a silver metallogenic province Résumé Le gisement argentifère de Zgounder (Anti-Atlas, Maroc

  18. Anharmonic lattice dynamics of Ag2O studied by inelastic neutron scattering and first-principles molecular dynamics simulations

    SciTech Connect (OSTI)

    Lan, Tian [California Institute of Technology, Pasadena] [California Institute of Technology, Pasadena; Li, Chen [ORNL] [ORNL; Niedziela, Jennifer L [ORNL] [ORNL; Smith, Hillary [California Institute of Technology, Pasadena] [California Institute of Technology, Pasadena; Abernathy, Douglas L [ORNL] [ORNL; Rossman, George [California Institute of Technology, Pasadena] [California Institute of Technology, Pasadena; Fultz, B. [California Institute of Technology, Pasadena] [California Institute of Technology, Pasadena

    2014-01-01T23:59:59.000Z

    Inelastic neutron scattering measurements on silver oxide (Ag2O) with the cuprite structure were performed at temperatures from 40 to 400 K, and Fourier transform far-infrared spectra were measured from 100 to 300 K. The measured phonon densities of states and the infrared spectra showed unusually large energy shifts with temperature, and large linewidth broadenings. First principles molecular dynamics (MD) calculations were performed at various temperatures, successfully accounting for the negative thermal expansion (NTE) and local dynamics. Using the Fourier-transformed velocity autocorrelation method, the MD calculations reproduced the large anharmonic effects of Ag2O, and were in excellent agreement with the neutron scattering data. The quasiharmonic approximation (QHA) was less successful in accounting for much of the phonon behavior. The QHA could account for some of the NTE below 250 K, although not at higher temperatures. Strong anharmonic effects were found for both phonons and for the NTE. The lifetime broadenings of Ag2O were explained by anharmonic perturbation theory, which showed rich interactions between the Ag-dominated modes and the O-dominated modes in both up- and down-conversion processes.

  19. CONTENT ANR @ MSU AgBioResearch One Hundred Years of Bean Breeding at Michigan State University: A

    E-Print Network [OSTI]

    SKIP TO CONTENT ANR @ MSU AgBioResearch Home Bean Info Beet Info Directions History InfoVideos Links One Hundred Years of Bean Breeding at Michigan State University: A Chronology by James D. Kelly it would be interesting to summarize the milestones achieved in bean breeding over the last century. All

  20. Preliminary design studies for an iridium rod target at the BNL-AGS

    SciTech Connect (OSTI)

    Ludewig, H.; Hastings, J.; Montanez, P.; Todosow, M.

    1998-12-31T23:59:59.000Z

    The BNL-AGS is an intense source of 24 GeV protons. It is proposed to explore the potential to use these protons as the driver for a Pulsed Spallation Neutron Source target. The proposed target design is based on an edge cooled iridium rod concept--similar to the anti-proton production target which operated reliably at CERN under similar conditions. Lead, lead fluoride, and beryllium are investigated as possible reflector materials, and ambient temperature light water and 80 K light water ice are proposed as initial moderator materials. Both moderators are decoupled by cadmium containing moderator chamber walls. The small size of the target has the advantage that the moderators can be placed close to the target (resulting in a bright source), and since a large fraction of the radioactive inventory is contained in the iridium rod, removal and disposition of this inventory should be relatively simple and inexpensive.

  1. Spreading of Sn-Ag solders on FeNi alloys

    SciTech Connect (OSTI)

    Saiz, Eduardo; Hwang, C-W.; Suganuma, Katsuaki; Tomsia, Antoni P.

    2003-02-28T23:59:59.000Z

    The spreading of Sn-3Ag-xBi solders on Fe-42Ni has been studied using a drop transfer setup. Initial spreading velocities as fast as {approx}0.5 m/s have been recorded. The results are consistent with a liquid front moving on a metastable, flat, unreacted substrate and can be described by using a modified molecular-kinetic model for which the rate controlling step is the movement of one atom from the liquid to the surface of the solid substrate. Although the phase diagram predicts the formation of two Fe-Sn intermetallics at the solder/substrate interface in samples heated at temperatures lower than 513 C, after spreading at 250 C only a thin FeSn reaction layer could be observed. Two interfacial layers (FeSn and FeSn2) were found after spreading at 450 C.

  2. Commissioning the new high power rf system for the AGS with high intensity beam

    SciTech Connect (OSTI)

    Brennan, J.M.; Ciardullo, D.J.; Deng, D.P; Hayes, T.; Onillon, E.; Otis, A.; Sanders, R.T.; Zaltsman, A.

    1994-08-01T23:59:59.000Z

    A new high power rf system has been installed in the AGS in order to raise the beam loading limit to beyond 6 {times} 10{sup 13} protons per pulse. The old system was limited to 2.2 {times} 10{sup l3} ppp by: available real power, multi-loop instability, and transient beam loading during batch filling from the Booster. The key components of the new system are: new power amplifiers in the tunnel using the Thomson-CSF TH573 300kW tetrode, rf feedback around the power stage, and reduction of the 10 cavities` R/Q by 1.8 by additional gap capacitors. Commissioning of the new rf system with high intensity beam is described. The intensity goal for the 1994 running period is 4 {times} 10{sup 13} ppp. To date, 3.7 {times} 10{sup 13} ppp has been achieved.

  3. MEASUREMENTS AND MODELING OF EDDY CURRENT EFFECTS IN BNL'S AGS BOOSTER.

    SciTech Connect (OSTI)

    BROWN, K.A.; AHRENS, L.; GARDNER, C.; GLENN, J.W.; HARVEY, M.; MENG, W.; ZENO, K.

    2006-06-23T23:59:59.000Z

    Recent beam experiments at BNL's AGS Booster have enabled us to study in more detail the effects of eddy currents on the lattice structure and our control over the betatron tune. The Booster is capable of operating at ramp rates as high as 9 T/sec. At these ramp rates eddy currents in the vacuum chambers significantly alter the fields and gradients seen by the beam as it is accelerated. The Booster was designed with these effects in mind and to help control the field uniformity and linearity in the Booster Dipoles special vacuum chambers were designed with current windings to negate the affect of the induced eddy currents. In this report results from betatron tune measurements and eddy current simulations will be presented. We will then present results from modeling the accelerator using the results of the magnetic field simulations and compare these to the measurements.

  4. Method and etchant to join ag-clad BSSCO superconducting tape

    DOE Patents [OSTI]

    Balachandran, Uthamalingam (Hinsdale, IL); Iyer, Anand N. (Downers Grove, IL); Huang, Jiann Yuan (Hsinchu, TW)

    1999-01-01T23:59:59.000Z

    A method of removing a silver cladding from high temperature superconducting material clad in silver (HTS) is disclosed. The silver clad HTS is contacted with an aqueous solution of HNO.sub.3 followed by an aqueous solution of NH.sub.4 OH and H.sub.2 O.sub.2 for a time sufficient to remove the silver cladding from the superconducting material without adversely affecting the superconducting properties of the superconducting material. A portion of the silver cladding may be masked with a material chemically impervious to HNO.sub.3 and to a combination of NH.sub.4 OH and H.sub.2 O.sub.2 to preserve the Ag coating. A silver clad superconductor is disclosed, made in accordance with the method discussed.

  5. Quasi-two-dimensional Dirac fermions and quantum magnetoresistance in LaAgBi2

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

    Wang, Kefeng; Graf, D.; Petrovic, C.

    2013-06-01T23:59:59.000Z

    We report quasi-two-dimensional (2D) Dirac fermions and quantum magnetoresistance in LaAgBi2. The band structure shows several narrow bands with nearly linear energy dispersion and Dirac-cone-like points at the Fermi level. The quantum oscillation experiments revealed one quasi-two-dimensional Fermi pocket and another complex pocket with a small cyclotron resonant mass. The in-plane transverse magnetoresistance exhibits a crossover at a critical field B? from semiclassical weak-field B2 dependence to the high-field unsaturated linear magnetoresistance which is attributed to the quantum limit of the Dirac fermions. Our results suggest the existence of quasi-2D Dirac fermions in rare-earth-based layered compounds with two-dimensional double-sized Bi square nets, similar to (Ca,Sr)MnBi2, irrespective of magnetic order.

  6. Thermal-mechanical Properties of Epoxy-impregnated Bi-2212/Ag Composite

    SciTech Connect (OSTI)

    Li, Pei; Wang, Yang; Godeke, Arno; Ye, Liyang; Flanagan, Gene; Shen, Tengming

    2014-11-26T23:59:59.000Z

    Knowledge of the thermal-mechanical properties of epoxy/superconductor/insulation composite is important for designing, fabricating, and operating epoxy impregnated high field superconducting magnets near their ultimate potentials. We report measurements of the modulus of elasticity, Poissons ratio, and the coefficient of thermal contraction of epoxy-impregnated composite made from the state-of-the-art powder-in-tube multifilamentary Ag/Bi2Sr2CaCu2Ox round wire at room temperature and cryogenic temperatures. Stress-strain curves of samples made from single-strand and Rutherford cables were tested under both monotonic and cyclic compressive loads, with single strands insulated using a thin TiO2 insulation coating and the Rutherford cable insulated with a braided ceramic sleeve.

  7. SIMULATION RESULTS OF RUNNING THE AGS MMPS, BY STORING ENERGY IN CAPACITOR BANKS.

    SciTech Connect (OSTI)

    MARNERIS, I.

    2006-09-01T23:59:59.000Z

    The Brookhaven AGS is a strong focusing accelerator which is used to accelerate protons and various heavy ion species to equivalent maximum proton energy of 29 GeV. The AGS Main Magnet Power Supply (MMPS) is a thyristor control supply rated at 5500 Amps, +/-go00 Volts. The peak magnet power is 49.5 Mwatts. The power supply is fed from a motor/generator manufactured by Siemens. The motor is rated at 9 MW, input voltage 3 phase 13.8 KV 60 Hz. The generator is rated at 50 MVA its output voltage is 3 phase 7500 Volts. Thus the peak power requirements come from the stored energy in the rotor of the motor/generator. The rotor changes speed by about +/-2.5% of its nominal speed of 1200 Revolutions per Minute. The reason the power supply is powered by the Generator is that the local power company (LIPA) can not sustain power swings of +/- 50 MW in 0.5 sec if the power supply were to be interfaced directly with the AC lines. The Motor Generator is about 45 years old and Siemens is not manufacturing similar machines in the future. As a result we are looking at different ways of storing energy and being able to utilize it for our application. This paper will present simulations of a power supply where energy is stored in capacitor banks. The simulation program used is called PSIM Version 6.1. The control system of the power supply will also be presented. The average power from LIPA into the power supply will be kept constant during the pulsing of the magnets at +/-50 MW. The reactive power will also be kept constant below 1.5 MVAR. Waveforms will be presented.

  8. S T U D EN T A ND EN R OLM EN T S ER V I CE S DI V IS IO N In order to assist departments and colleges with their planning cycle for 2014-15 and beyond,

    E-Print Network [OSTI]

    Saskatchewan, University of

    Page | 1 S T U D EN T A ND EN R OLM EN T S ER V I CE S DI V IS IO N In order to assist departments: Key Dates and Deadlines for 2014-15 DATE: March 28, 2014 #12;Page | 2 S T U D EN T A ND EN R OLM EN

  9. Surface plasmon dispersion engineering via double-metallic AU/AG layers for nitride light-emitting diodes

    DOE Patents [OSTI]

    Tansu, Nelson; Zhao, Hongping; Zhang, Jing; Liu, Guangyu

    2014-04-01T23:59:59.000Z

    A double-metallic deposition process is used whereby adjacent layers of different metals are deposited on a substrate. The surface plasmon frequency of a base layer of a first metal is tuned by the surface plasmon frequency of a second layer of a second metal formed thereon. The amount of tuning is dependent upon the thickness of the metallic layers, and thus tuning can be achieved by varying the thicknesses of one or both of the metallic layers. In a preferred embodiment directed to enhanced LED technology in the green spectrum regime, a double-metallic Au/Ag layer comprising a base layer of gold (Au) followed by a second layer of silver (Ag) formed thereon is deposited on top of InGaN/GaN quantum wells (QWs) on a sapphire/GaN substrate.

  10. Resistive switching and conductance quantization in Ag/SiO{sub 2}/indium tin oxide resistive memories

    SciTech Connect (OSTI)

    Gao, S.; Chen, C.; Liu, H. Y.; Lin, Y. S.; Li, S. Z.; Lu, S. H.; Wang, G. Y.; Song, C.; Zeng, F., E-mail: zengfei@mail.tsinghua.edu.cn; Pan, F., E-mail: panf@mail.tsinghua.edu.cn [Laboratory of Advanced Materials (MOE), School of Materials Science and Engineering, Tsinghua University, Beijing 100084 (China); Zhai, Z. [Department of Metallurgical Engineering, College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024 (China)

    2014-08-11T23:59:59.000Z

    The Ag/SiO{sub 2}/indium tin oxide (ITO) devices exhibit bipolar resistive switching with a large memory window of ?10{sup 2}, satisfactory endurance of >500 cycles, good retention property of >2000?s, and fast operation speed of <100?ns, thus being a type of promising resistive memory. Under slow voltage sweep measurements, conductance plateaus with a conductance value of integer or half-integer multiples of single atomic point contact have been observed, which agree well with the physical phenomenon of conductance quantization. More importantly, the Ag/SiO{sub 2}/ITO devices exhibit more distinct quantized conductance plateaus under pulse measurements, thereby showing the potential for realizing ultra-high storage density.

  11. Enhancement of hole injection and electroluminescence by ordered Ag nanodot array on indium tin oxide anode in organic light emitting diode

    SciTech Connect (OSTI)

    Jung, Mi, E-mail: jmnano00@gmail.com, E-mail: Dockha@kist.re.kr [Sensor System Research Center, Korea Institute of Science and Technology, Seoul 136-791 (Korea, Republic of); School of Mechanical Systems Engineering, Kookmin University, Seoul 136-702 (Korea, Republic of); Mo Yoon, Dang; Kim, Miyoung [Korea Printed Electronics Center, Korea Electronics Technology Institute, Jeollabuk-do, 561-844 (Korea, Republic of); Kim, Chulki; Lee, Taikjin; Hun Kim, Jae; Lee, Seok; Woo, Deokha, E-mail: jmnano00@gmail.com, E-mail: Dockha@kist.re.kr [Sensor System Research Center, Korea Institute of Science and Technology, Seoul 136-791 (Korea, Republic of); Lim, Si-Hyung [School of Mechanical Systems Engineering, Kookmin University, Seoul 136-702 (Korea, Republic of)

    2014-07-07T23:59:59.000Z

    We report the enhancement of hole injection and electroluminescence (EL) in an organic light emitting diode (OLED) with an ordered Ag nanodot array on indium-tin-oxide (ITO) anode. Until now, most researches have focused on the improved performance of OLEDs by plasmonic effects of metal nanoparticles due to the difficulty in fabricating metal nanodot arrays. A well-ordered Ag nanodot array is fabricated on the ITO anode of OLED using the nanoporous alumina as an evaporation mask. The OLED device with Ag nanodot arrays on the ITO anode shows higher current density and EL enhancement than the one without any nano-structure. These results suggest that the Ag nanodot array with the plasmonic effect has potential as one of attractive approaches to enhance the hole injection and EL in the application of the OLEDs.

  12. Ag{sub 3}PO{sub 4}/ZnO: An efficient visible-light-sensitized composite with its application in photocatalytic degradation of Rhodamine B

    SciTech Connect (OSTI)

    Liu, Wei [School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189 (China) [School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189 (China); School of Chemistry and Material Science, Huaibei Normal University, Huaibei 235000 (China); Wang, Mingliang, E-mail: wangmlchem@263.net [School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189 (China)] [School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189 (China); Xu, Chunxiang [State Key Laboratory of Bioelectronics, Southeast University, Nanjing 210096 (China)] [State Key Laboratory of Bioelectronics, Southeast University, Nanjing 210096 (China); Chen, Shifu, E-mail: chshifu@chnu.edu.cn [School of Chemistry and Material Science, Huaibei Normal University, Huaibei 235000 (China)] [School of Chemistry and Material Science, Huaibei Normal University, Huaibei 235000 (China); Fu, Xianliang [School of Chemistry and Material Science, Huaibei Normal University, Huaibei 235000 (China)] [School of Chemistry and Material Science, Huaibei Normal University, Huaibei 235000 (China)

    2013-01-15T23:59:59.000Z

    Graphical abstract: The free OH radicals generated in the VB of ZnO play the primary role in the visible-light photocatalytic degradation of RhB in Ag{sub 3}PO{sub 4}/ZnO system. The accumulated electrons in the CB of Ag{sub 3}PO{sub 4} can be transferred to O{sub 2} adsorbed on the surface of the composite semiconductors and H{sub 2}O{sub 2} yields. H{sub 2}O{sub 2} reacts with electrons in succession to produce active OH to some extent. Display Omitted Highlights: ? Efficient visible-light-sensitized Ag{sub 3}PO{sub 4}/ZnO composites were successfully prepared. ? Effect of Ag{sub 3}PO{sub 4} content on the catalytic activity of Ag{sub 3}PO{sub 4}/ZnO is studied in detail. ? Rate constant of RhB degradation over Ag{sub 3}PO{sub 4}(3.0 wt.%)/ZnO is 3 times that of Ag{sub 3}PO{sub 4}. ? The active species in RhB degradation are examined by adding a series of scavengers. ? Visible light degradation mechanism of RhB over Ag{sub 3}PO{sub 4}/ZnO is systematically studied. -- Abstract: The efficient visible-light-sensitized Ag{sub 3}PO{sub 4}/ZnO composites with various weight percents of Ag{sub 3}PO{sub 4} were prepared by a facile ball milling method. The photocatalysts were characterized by XRD, DRS, SEM, EDS, XPS, and BET specific area. The OH radicals produced during the photocatalytic reaction was detected by the TAPL technique. The photocatalytic property of Ag{sub 3}PO{sub 4}/ZnO was evaluated by photocatalytic degradation of Rhodamine B under visible light irradiation. Significantly, the results revealed that the photocatalytic activity of the composites was much higher than that of pure Ag{sub 3}PO{sub 4} and ZnO. The rate constant of RhB degradation over Ag{sub 3}PO{sub 4}(3.0 wt.%)/ZnO is 3 times that of single-phase Ag{sub 3}PO{sub 4}. The optimal percentage of Ag{sub 3}PO{sub 4} in the composite is 3.0 wt.%. It is proposed that the OH radicals produced in the valence band of ZnO play the leading role in the photocatalytic degradation of Rhodamine B by Ag{sub 3}PO{sub 4}/ZnO systems under visible light irradiation.

  13. Raman Spectroscopy of the Reaction of Thin Films of Solid-State Benzene with Vapor-Deposited Ag, Mg, and Al

    SciTech Connect (OSTI)

    Schalnat, Matthew C. [Univ. of Arizona, Tucson, AZ (United States). Dept. of Chemistry and Biochemistry; Hawkridge, Adam M. [Univ. of Arizona, Tucson, AZ (United States). Dept. of Chemistry and Biochemistry; Pemberton, Jeanne E. [Univ. of Arizona, Tucson, AZ (United States). Dept. of Chemistry and Biochemistry

    2011-07-21T23:59:59.000Z

    Thin films of solid-state benzene at 30 K were reacted with small quantities of vapor-deposited Ag, Mg, and Al under ultrahigh vacuum, and products were monitored using surface Raman spectroscopy. Although Ag and Mg produce small amounts of metalbenzene adduct products, the resulting Raman spectra are dominated by surface enhancement of the normal benzene modes from metallic nanoparticles suggesting rapid Ag or Mg metallization of the film. In contrast, large quantities of Al adduct products are observed. Vibrational modes of the products in all three systems suggest adducts that are formed through a pathway initiated by an electron transfer reaction. The difference in reactivity between these metals is ascribed to differences in ionization potential of the metal atoms; ionization potential values for Ag and Mg are similar but larger than that for Al. These studies demonstrate the importance of atomic parameters, such as ionization potential, in solid-state metalorganic reaction chemistry.

  14. Magnetic field enhancement of non-local spin signal in Ni{<_80}Fe{<_20}/Ag lateral spin valves.

    SciTech Connect (OSTI)

    Mihajlovic, G.; Erlingsson, S. I.; Vyborny, K.; Pearson, J. E.; Bader, S. D.; Hoffmann, A. (Center for Nanoscale Materials); ( MSD); (Hitachi Global Storage Tech.); (Reykjavik Univ.); (Acad. Sci. Czech Republic)

    2011-01-01T23:59:59.000Z

    We observe a magnetic-field-induced enhancement of the nonlocal spin signal in Ni{sub 80}Fe{sub 20}/Ag lateral spin valves. The enhancement depends on the bias current polarity but not on the field direction. We present a theoretical model that explains our experimental results, taking into account the electron-spin relaxation of magnetic impurities. We find that the relaxation is about an order of magnitude weaker than Elliott-Yafet relaxation.

  15. Impacts of increased bioenergy demand on global food markets: an AgMIP economic model intercomparison

    SciTech Connect (OSTI)

    Lotze-Campen, Hermann; von Lampe, Martin; Kyle, G. Page; Fujimori, Shinichiro; Havlik, Petr; van Meijl, Hans; Hasegawa, Tomoko; Popp, Alexander; Schmitz, Christoph; Tabeau, Andrzej; Valin, Hugo; Willenbockel, Dirk; Wise, Marshall A.

    2014-01-01T23:59:59.000Z

    Integrated Assessment studies have shown that meeting ambitious greenhouse gas mitigation targets will require substantial amounts of bioenergy as part of the future energy mix. In the course of the Agricultural Model Comparison and Improvement Project (AgMIP), five global agro-economic models were used to analyze a future scenario with global demand for ligno-cellulosic bioenergy rising to about 100 ExaJoule in 2050. From this exercise a tentative conclusion can be drawn that ambitious climate change mitigation need not drive up global food prices much, if the extra land required for bioenergy production is accessible or if the feedstock, e.g. from forests, does not directly compete for agricultural land. Agricultural price effects across models by the year 2050 from high bioenergy demand in an RCP2.6-type scenario appear to be much smaller (+5% average across models) than from direct climate impacts on crop yields in an RCP8.5-type scenario (+25% average across models). However, potential future scarcities of water and nutrients, policy-induced restrictions on agricultural land expansion, as well as potential welfare losses have not been specifically looked at in this exercise.

  16. The Herschel view of the nebula around the luminous blue variable star AG Carinae

    E-Print Network [OSTI]

    Vamvatira-Nakou, C; Royer, P; Cox, N L J; Naze, Y; Rauw, G; Waelkens, C; Groenewegen, M A T

    2015-01-01T23:59:59.000Z

    Far-infrared Herschel PACS imaging and spectroscopic observations of the nebula around the luminous blue variable (LBV) star AG Car have been obtained along with optical imaging in the Halpha+[NII] filter. In the infrared light, the nebula appears as a clumpy ring shell that extends up to 1.2 pc with an inner radius of 0.4 pc. It coincides with the Halpha nebula, but extends further out. Dust modeling of the nebula was performed and indicates the presence of large grains. The dust mass is estimated to be ~ 0.2 Msun. The infrared spectrum of the nebula consists of forbidden emission lines over a dust continuum. Apart from ionized gas, these lines also indicate the existence of neutral gas in a photodissociation region that surrounds the ionized region. The abundance ratios point towards enrichment by processed material. The total mass of the nebula ejected from the central star amounts to ~ 15 Msun, assuming a dust-to-gas ratio typical of LBVs. The abundances and the mass-loss rate were used to constrain the e...

  17. Temperature-dependent void-sheet fracture in Al-Cu-Mg-Ag-Zr

    SciTech Connect (OSTI)

    Haynes, M.J. [Texas Instruments, Inc., Attleboro, MA (United States); Gangloff, R.P. [Univ. of Virginia, Charlottesville, VA (United States). Dept. of Materials Science and Engineering

    1998-06-01T23:59:59.000Z

    Temperature-dependent initiation fracture toughness and stable crack growth resistance are important attributes of next-generation aluminum alloys for airframe applications such as the high speed civil transport. Previous research showed that tensile fracture strain increases as temperature increases for AA2519 with Mg and Ag additions, because the void-sheet coalescence stage of microvoid fracture is retarded. The present work characterizes intravoid-strain localization (ISL) between primary voids at large constituents and secondary-void nucleation at small dispersoids, two mechanisms that may govern the temperature dependence of void sheeting. Most dispersoids nucleate secondary voids in an ISL band at 25 C, promoting further localization, while dispersoid-void nucleation at 150 C is greatly reduced. Increased strain-rate hardening with increasing temperature does not cause this behavior. Rather, a stress relaxation model predicts that flow stress and strain hardening decrease with increasing temperature or decreasing strain rate due to a transition from dislocation accumulation to diffusional relaxation around dispersoids. This transition to softening causes a sharp increase in the model-predicted applied plastic strain necessary for dispersoid/matrix interface decohesion. This reduced secondary-void nucleation and reduced ISL at elevated temperature explain retarded void sheeting and increased fracture strain.

  18. Scanning tunneling microscopy/spectroscopy of picene thin films formed on Ag(111)

    SciTech Connect (OSTI)

    Yoshida, Yasuo, E-mail: yyoshida@issp.u-tokyo.ac.jp; Yokosuka, Takuya; Hasegawa, Yukio, E-mail: hasegawa@issp.u-tokyo.ac.jp [The Institute of Solid State Physics, The University of Tokyo, Kashiwa 277-8581 (Japan); Yang, Hung-Hsiang [Department of Physics, National Taiwan University, Taipei 106, Taiwan (China); Huang, Hsu-Sheng; Guan, Shu-You; Su, Wei-Bin; Chang, Chia-Seng [Institute of Physics, Academia Sinica, Nankang, Taipei 11529, Taiwan (China); Yanagisawa, Susumu [Department of Physics and Earth Science Department, University of the Ryukyus, 1 Nishihara, Okinawa 903-0213 (Japan); Lin, Minn-Tsong [Department of Physics, National Taiwan University, Taipei 106, Taiwan (China); Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 10617, Taiwan (China); Hoffmann, Germar [The Institute of Solid State Physics, The University of Tokyo, Kashiwa 277-8581 (Japan); Department of Physics, National Tsing Hua University, Hsinchu 30013, Taiwan (China)

    2014-09-21T23:59:59.000Z

    Using ultrahigh-vacuum low-temperature scanning tunneling microscopy and spectroscopy combined with first principles density functional theory calculations, we have investigated structural and electronic properties of pristine and potassium (K)-deposited picene thin films formed in situ on a Ag(111) substrate. At low coverages, the molecules are uniformly distributed with the long axis aligned along the [112{sup }] direction of the substrate. At higher coverages, ordered structures composed of monolayer molecules are observed, one of which is a monolayer with tilted and flat-lying molecules resembling a (11{sup }0) plane of the bulk crystalline picene. Between the molecules and the substrate, the van der Waals interaction is dominant with negligible hybridization between their electronic states; a conclusion that contrasts with the chemisorption exhibited by pentacene molecules on the same substrate. We also observed a monolayer picene thin film in which all molecules were standing to form an intermolecular ? stacking. Two-dimensional delocalized electronic states are found on the K-deposited ? stacking structure.

  19. Performance of Titanium-Oxide/Polymer Insulation in Bi-2212/Ag-alloy Round Wire Wound Superconducting Coils

    E-Print Network [OSTI]

    Chen, Peng; Dalban-Canassy, Matthieu; Jiang, Jianyi; Hellstrom, Eric E; Larbalestier, David C

    2013-01-01T23:59:59.000Z

    Conductor insulation is one of the key components needed to make Ag-alloy clad Bi2Sr2CaCu2O8+x (Bi-2212/Ag) superconducting round wire (RW) successful for high field magnet applications as dielectric standoff and high winding current densities (Jw) directly depend on it. In this study, a TiO2/polymer insulation coating developed by nGimat LLC was applied to test samples and a high field test coil. The insulation was investigated by differential thermal analysis (DTA), thermo-gravimetric analysis (TGA), scanning electron microscopy (SEM), dielectric properties measurement, and transport critical current (Ic) properties measurement. About 29% of the insulation by weight is polymer. When the Bi-2212/Ag wire is full heat treated, this decomposes with slow heating to 400{\\deg}C in pure O2. After the full reaction, we found that the TiO2 did not degrade the critical current properties, adhered well to the conductor, and provided a breakdown voltage of >100 V, which allowed the test coil to survive quenching in 31.2...

  20. Processing and fabrication of YBa sub 2 Cu sub 3 O sub x /Ag composite wires and coils

    SciTech Connect (OSTI)

    Ferrando, W.A.; Divecha, A.P.; Mansour, A.N.; Karmarkar, S.D. (Naval Surface Warfare Center, Silver Spring, MD (USA)); Balachandran, U.; Dorris, S.E.; Dusek, J.T.; Picciolo, J.J.; Singh, J.P.; Poeppel, R.B. (Argonne National Lab., IL (USA))

    1990-01-01T23:59:59.000Z

    Silver was added to YBa{sub 2}Cu{sub 3}O{sub x} (123) powder by a melt technique using AgNO{sub 3} and heated to {approximately}600{degree}C to decompose the nitrate. This process yields 123 powder that is uniformly coated with Ag, as indicated by optical and scanning electron microscopy (SEM). The composite power is formed into rods ({approximately}4 mm diameter) via drawing and swaging through conical converging dies. Wires of finer diameter ({approximately}1 mm) and substantially greater linear uniformity have been produced by slurry extrusion of the composite powder in a polymeric vehicle. Transport critical current density, J{sub c}, of these wires at present is about 750 A/cm{sup 2}. This value may be expected to rise due to further reduction of second phase impurities localized at grain boundaries and better understanding of the Ag/superconductor interface. This paper describes the wire fabrication in some detail and discusses the results of microscopic analyses by scanning electron microscopy (SEM), x-ray photoemission spectroscopy (XPS), and x-ray diffraction (XRD). 11 refs., 4 figs., 1 tab.

  1. Ag-catalyzed synthesis of europium borate Eu(BO{sub 2}){sub 3} nanowires, growth mechanism and luminescent properties

    SciTech Connect (OSTI)

    Yang, Lan, E-mail: yanglan1116@126.com [Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules and College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062 (China)] [Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules and College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062 (China); Zhou, Liqun, E-mail: zlq@hubu.edu.cn [Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules and College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062 (China)] [Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules and College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062 (China); Huang, Ying; Tang, Ziwei [Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules and College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062 (China)] [Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules and College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062 (China)

    2011-02-15T23:59:59.000Z

    Eu(BO{sub 2}){sub 3} nanowires with diameters of 10-20 nm were fabricated through direct sintering Eu(NO{sub 3}){sub 3}.6H{sub 2}O and H{sub 3}BO{sub 3} with Ag as catalyst. The result of X-ray diffraction (XRD) indicated that the nanowire was single-crystalline with body-centered monoclinic structure. Based on the fact that Ag nanoparticles attached to the tips and middles of nanowires, a vapor-liquid-solid (VLS) growth mechanism of the Eu(BO{sub 2}){sub 3} nanowires is proposed. Three well-defined stages have been clearly identified during the process: Ag-Eu-B-O cluster process, crystal nucleation, and axial growth. The photoluminescence characteristics under UV excitation were investigated. The dominated Eu{sup 3+} orange-red emission corresponding to the magnetic dipole transition {sup 5}D{sub 0} {yields} {sup 7}F{sub 1} is centered at 591 nm, indicating that Eu{sup 3+} is located at high symmetry crystal field with inversion center.

  2. First-principles study of electronic structures and optical properties of Cu, Ag, and Au-doped anatase TiO2

    E-Print Network [OSTI]

    Guo, Meili; 10.1016/j.physb.2011.12.128

    2012-01-01T23:59:59.000Z

    We perform first-principles calculations to investigate the band structure, density of states, optical absorption, and the imaginary part of dielectric function of Cu, Ag, and Au-doped anatase TiO2 in 72 atoms systems. The electronic structure results show that the Cu incorporation can lead to the enhancement of d states near the uppermost of valence band, while the Ag and Au doping cause some new electronic states in band gap of TiO2. Meanwhile, it is found that the visible optical absorptions of Cu, Ag, and Au-doped TiO2, are observed by analyzing the results of optical properties,.which locate in the region of 400-1000 nm. The absorption band edges of Cu, Ag, and Au-doped TiO2 shift to the long wavelength region compared with the pure TiO2. Furthermore, according to the calculated results, we propose the optical transition mechanisms of Cu, Ag, and Au-doped TiO2, respectively. Our results show that the visible light response of TiO2 can be modulated by substitutional doping of Cu, Ag, and Au.

  3. Max-Planck-Institut f ur Mathematik

    E-Print Network [OSTI]

    (of RankineHugoniot type) expressing conservation, some kinetic rule g acts as a twosided boundary expression that can be determined from derivatives of W and g at U A and U B . 1. Introduction In this paper) associated with (2), solutions (3) are required to satisfy an additional kinetic rule g((U - , V - ), (U

  4. Max-Planck-Institut f ur Mathematik

    E-Print Network [OSTI]

    the compression of complex data (for storage or transmission), also introduced in many areas such as signal, the aim is to compress the best as possible the information or to extract a few modes representing some = X i#I a i d O j=1 b (j) i j , (1.1) where I = I 1 . . . I d is a multiindex set with I j = {1

  5. Max-Planck-Institut f ur Mathematik

    E-Print Network [OSTI]

    systems and how to program these computers. The load balancing methods used in this article are introduced­Matrix Arithmetics on Shared Memory Systems by Ronald Kriemann Preprint no.: 29 2004 #12; #12; Parallel H­Matrix Arithmetics on Shared Memory Systems R. Kriemann # May 12, 2004 Abstract H­matrices, as they were introduced

  6. Max-Planck-Institut f ur Mathematik

    E-Print Network [OSTI]

    Applications Australian National University Canberra ACT 0200, Australia chaudhur@maths.anu.edu.au and Stefan M

  7. Max-Planck-Institut f ur Mathematik

    E-Print Network [OSTI]

    equations by Huijun Fan, Tyler Jarvis, and Yongbin Ruan Preprint no.: 40 2004 #12; #12; COMPACTNESS OF A r SPIN EQUATIONS HUIJUN FAN, TYLER JARVIS AND YONGBIN RUAN Abstract. We introduce the W spin structuresspin equations considered by E. Witten [W2]. If the number of the Ramond marked points on # is at least 1

  8. MaxPlanckInstitut f ur Mathematik

    E-Print Network [OSTI]

    of the Science, China University of Petroleum, 266580 Qingdao, China 3 College of Mathematics and Statistics. Moreover, our lower bound of the Grothendieck constant of order three gives a refined bound­locality coincide. However for mixed states, the situation is more compli­ cated. There are no general methods

  9. MaxPlanckInstitut f ur Mathematik

    E-Print Network [OSTI]

    such as in Schr?odinger cat para­ dox and quantum no­cloning theorem [3]. The existence of superposed quantum

  10. Max-Planck-Institut f ur Mathematik

    E-Print Network [OSTI]

    a destabilizing factor leading to the extinction of species, we here demonstrate complementarily that delay--9], subsequently leading to the extinction of species. Most ecological models neglect delays or employ sin gle systems including twospecies systems, food chains, and food webs. Twospecies models. We first study twospecies

  11. WEL-2012-04 URS enforcement Letter

    Energy Savers [EERE]

    existing and potential hazards and implement the necessary controls for the exhaust ventilation system work activity associated with the July 9 fall protection issue in...

  12. Max-Planck-Institut f ur Mathematik

    E-Print Network [OSTI]

    in the field of engineering and applied mathematics. In this article we are interested in the e#cient solution computers develop. Therefore, in the past few years fast summation methods have become widely popular for the approximation of the whole matrix and is therefore wellsuited to speed up existing computer codes

  13. MaxPlanckInstitut f ur Mathematik

    E-Print Network [OSTI]

    discrimination without entanglement by Bo Li, Shao­Ming Fei, Zhi­Xi Wang, and Heng Fan Preprint no.: 11 2012 #12, 3 and Heng Fan 1, + 1 Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China 2

  14. MaxPlanckInstitut f ur Mathematik

    E-Print Network [OSTI]

    States by Zong­Guo Li, Ming­Jing Zhao, Shao­Ming Fei, Heng Fan, and W.M. Liu Preprint no.: 8 2012 #12; #12; Mixed maximally entangled states Zong­Guo Li 1,2 , Ming­Jing Zhao 3,4 , Shao­Ming Fei 4 , Heng

  15. Max-Planck-Institut f ur Mathematik

    E-Print Network [OSTI]

    with hybrid atomisticcontinuum models [11] and martensitic phase transformation in shapememory alloys [5

  16. Max-Planck-Institut f ur Mathematik

    E-Print Network [OSTI]

    rewiring introduce smallworld e#ects [3, 4]. Many common networks, such as the WorldWide Web [5 distributions. In other words, if P (d) denotes the fraction of vertices having d incident edges, then the shape

  17. Max-Planck-Institut f ur Mathematik

    E-Print Network [OSTI]

    , Cambridge, CB3 OWA e­mail: D.M.A.Stuart@damtp.cam.ac.uk Abstract The long­time asymptotics is analyzed for finite energy solutions of the 1D Schr?odinger equation coupled to a nonlinear oscillator. The coupled to the free Schr?odinger equation. The proofs use the strategy of Buslaev­Perelman [3, 4]: the linerization

  18. Max-Planck-Institut f ur Mathematik

    E-Print Network [OSTI]

    construction of noncommutative Yang­Mills theories (with matter fields) for arbitrary gauge groups for building gauge fields and gauge parameters of the noncommutative theory from Lie algebra valued gauge constructs the corresponding field strengths of the noncommutative theory, and finally the action in terms

  19. Max-Planck-Institut f ur Mathematik

    E-Print Network [OSTI]

    physics are con­ sistent with the Moyal product of noncommutative field theory. An example­Witten noncommutative gauge theories by Friedemann Brandt, Carmelo P. Martin, and Fernando Ruiz Ruiz Preprint no.: 70­Witten noncommutative gauge theories Friedemann Brandt Max­Planck­Institute for Mathematics in the Sciences, Inselstra?e

  20. Max-Planck-Institut f ur Mathematik

    E-Print Network [OSTI]

    ­Information by Nihat Ay and Andreas Knauf Preprint no.: 42 2003 #12; #12; MAXIMIZING MULTI­INFORMATION NIHAT AY; 2 NIHAT AY AND ANDREAS KNAUF # (1,1) 1 2 # (0,0) + # (1,1) #1; 1 2 # (1,0) + # (0,1) #1; # (1

  1. Max-Planck-Institut f ur Mathematik

    E-Print Network [OSTI]

    and Global Information Geometry by Nihat Ay and Wilderich Tuschmann Preprint no.: 24 2002 #12; #12; DUALLY FLAT MANIFOLDS AND GLOBAL INFORMATION GEOMETRY Nihat Ay and Wilderich Tuschmann February 26, 2002

  2. Max-Planck-Institut f ur Mathematik

    E-Print Network [OSTI]

    of the information divergence from an exponential family by FrantiŸsek Mat??uŸs and Nihat Ay Preprint no.: 46 2003 #12 of the information divergence from an exponential family Franti²ek Matú² # and Nihat Ay + Abstract. The information

  3. MaxPlanckInstitut f ur Mathematik

    E-Print Network [OSTI]

    of the information divergence from an exponential family, a problem which was first formulated by Nihat Ay in [1

  4. MaxPlanckInstitut f ur Mathematik

    E-Print Network [OSTI]

    Independence Ideals by Johannes Rauh, and Nihat Ay Preprint no.: 63 2011 #12; #12; ROBUSTNESS AND CONDITIONAL INDEPENDENCE IDEALS JOHANNES RAUH 1 , NIHAT AY 1,2 Abstract. We study notions of robustness of Markov kernels: September 29, 2011. 1 #12; 2 JOHANNES RAUH 1 , NIHAT AY 1,2 is important. Similarly, in the analysis

  5. Max-Planck-Institut f ur Mathematik

    E-Print Network [OSTI]

    ­information in the thermodynamic limit by Ionas Erb and Nihat Ay Preprint no.: 58 2003 #12; #12; Multi­information in the thermodynamic limit Ionas Erb # Nihat Ay + July 3, 2003 Abstract From information theory, mutual information

  6. Max-Planck-Institut f ur Mathematik

    E-Print Network [OSTI]

    ­theoretic grounding of finite automata in neural systems by Thomas Wennekers and Nihat Ay Preprint no.: 52 2002 #12; #12; Information­theoretic grounding of finite automata in neural systems Thomas Wennekers and Nihat

  7. Max-Planck-Institut f ur Mathematik

    E-Print Network [OSTI]

    stochastic interaction in directed acyclic networks (revised version: March 2002) by Nihat Ay Preprint no.: 54 2001 #12; #12; Locality of Global Stochastic Interaction in Directed Acyclic Networks Nihat Ay Max

  8. Max-Planck-Institut f ur Mathematik

    E-Print Network [OSTI]

    Flatness in Quantum Information Geometry (revised version: August 2002) by Nihat Ay and Wilderich Tuschmann Preprint no.: 69 2002 #12; #12; DUALITY VERSUS DUAL FLATNESS IN QUANTUM INFORMATION GEOMETRY NIHAT AY as to pure state estimation theory (cf. [FN1], [FN2], [Mats]). Date: August 15, 2002. 1 #12; 2 NIHAT AY

  9. Max-Planck-Institut f ur Mathematik

    E-Print Network [OSTI]

    cooling mechanisms. In 1995, the first experimental realisations of BEC were achieved in a system these systems have been the subject of an explosion of research, both experimental and theoretical interacting dilute systems of particles. The main achievement are large deviations principles for the mean

  10. WEL-2012-04 URS enforcement Letter

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA group currentBradley Nickell Director of Transmission Planning -Thomas H. Zarges

  11. LA-UR-15-23282

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron 9 5 - -/e),,s - 6157 / The Cold War

  12. LA-UR-12-22318

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItem Not Found Item Not Found TheHot electron dynamics in grapheneInverter8318-MSUA '318

  13. LA-UR-13-20411

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItem Not Found Item Not Found TheHot electron dynamics in grapheneInverter8318-MSUA

  14. UR principles2.indd | Department of Energy

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33Frequently20,000 Russian Nuclear Warheads into Fuel for U.S. Electricity3Department of

  15. URS Enforcement Letter (WEL-2015-02)

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33Frequently20,000 Russian Nuclear Warheads into Fuel for U.S. Electricity3Department ofURANIUMA.4,

  16. LA-UR-10-05336

    National Nuclear Security Administration (NNSA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA Approved:Administration SandiaAdministration News |Jordan ||L _

  17. Photocatalytic degradation of gaseous toluene over hollow spindle-like ?-Fe{sub 2}O{sub 3} loaded with Ag

    SciTech Connect (OSTI)

    Li, Hong [State Key Laboratory of Fine Chemical, Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024 (China) [State Key Laboratory of Fine Chemical, Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024 (China); Department of Basic, Dalian Naval Academy, Dalian 116018 (China); Zhao, Qidong [State Key Laboratory of Fine Chemical, Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024 (China)] [State Key Laboratory of Fine Chemical, Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024 (China); Li, Xinyong, E-mail: xyli@dlut.edu.cn [State Key Laboratory of Fine Chemical, Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024 (China) [State Key Laboratory of Fine Chemical, Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024 (China); Department of Chemical Engineering, Curtin University, Perth, WA 6845 (Australia); Shi, Yong [State Key Laboratory of Fine Chemical, Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024 (China)] [State Key Laboratory of Fine Chemical, Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024 (China); Zhu, Zhengru [Research Center of Hydrology and Engineering, Academy of City and Environment, Liaoning Normal University, Dalian 116029 (China)] [Research Center of Hydrology and Engineering, Academy of City and Environment, Liaoning Normal University, Dalian 116029 (China); Tade, Moses [Department of Chemical Engineering, Curtin University, Perth, WA 6845 (Australia)] [Department of Chemical Engineering, Curtin University, Perth, WA 6845 (Australia); Liu, Shaomin, E-mail: shaomin.liu@curtin.edu.au [Department of Chemical Engineering, Curtin University, Perth, WA 6845 (Australia)] [Department of Chemical Engineering, Curtin University, Perth, WA 6845 (Australia)

    2012-06-15T23:59:59.000Z

    Highlights: ? Hollow ?-Fe{sub 2}O{sub 3} spindle-shaped microparticles were prepared for Ag support. ? The hollow ?-Fe{sub 2}O{sub 3} and Ag/?-Fe{sub 2}O{sub 3} materials were used to degrade gaseous toluene. ? Complete degradation of toluene occurred on the Ag/?-Fe{sub 2}O{sub 3} surface. -- Abstract: In this work, hollow spindle-like ?-Fe{sub 2}O{sub 3} nanoparticles were synthesized by a hydrothermal route. The Ag/?-Fe{sub 2}O{sub 3} catalyst was prepared based on the spindle-shaped ?-Fe{sub 2}O{sub 3} with CTAB as the surfactant, which showed excellent photoelectric property and photocatalytic activity. The structural properties of these samples were systematically investigated by X-ray powder diffraction, scanning electronic microscopy, transmission electronic microscopy, energy-dispersive X-ray spectra, and UVVis diffuse reflectance spectroscopy techniques. The photo-induced charge separation in the samples was demonstrated by surface photovoltage measurement. The photocatalytic performances of the Ag/?-Fe{sub 2}O{sub 3} and ?-Fe{sub 2}O{sub 3} samples were comparatively studied in the degradation of toluene under xenon lamp irradiation by in situ FTIR spectroscopy. Benzaldehyde and benzoic acid species could be observed on the ?-Fe{sub 2}O{sub 3} surface rather than Ag/?-Fe{sub 2}O{sub 3} surface. The results indicate that the Ag/?-Fe{sub 2}O{sub 3} sample exhibited higher photocatalytic efficiency.

  18. Adsorption Isotherms for Xenon and Krypton using INL HZ-PAN and AgZ-PAN Sorbents

    SciTech Connect (OSTI)

    Troy G. Garn; Mitchell Greenhalgh; Veronica J. Rutledge; Jack D. Law

    2014-08-01T23:59:59.000Z

    The generation of adsorption isotherms compliments the scale-up of off-gas processes used to control the emission of encapsulated radioactive volatile fission and activation products released during Used Nuclear Fuel (UNF) reprocessing activities. A series of experiments were conducted to obtain capacity results for varying Kr and Xe gas concentrations using HZ-PAN and AgZ-PAN engineered form sorbents. Gas compositions for Kr ranged from 150-40,000 ppmv and 250-5020 ppmv for Xe in a helium balance. The experiments were all performed at 220 K at a flowrate of 50 sccm. Acquired capacities were then respectively fit to the Langmuir equation using the Langmuir linear regression method to obtain the equilibrium parameters Qmax and Keq. Generated experimental adsorption isotherms were then plotted with the Langmuir predicted isotherms to illustrate agreement between the two. The Langmuir parameters were provided for input into the OSPREY model to predict breakthrough of single component adsorption of Kr and Xe on HZ-PAN and AgZ-PAN sorbents at the experimental conditions tested. Kr and Xe capacities resulting from model breakthrough predictions were then compared to experimental capacities for model validation.

  19. On the formation of {mu}- and {zeta}-phases in Ag-Al system by mechanical alloying

    SciTech Connect (OSTI)

    Paruchuri, M.R.; Zhang, D.L.; Massalski, T.B. [Carnegie Mellon Univ., Pittsburgh, PA (United States). Dept. of Materials Science and Engineering

    1993-09-01T23:59:59.000Z

    Pure silver and aluminum powders have been mechanically alloyed in a Spex mill. Four selected nominal compositions Ag{sub 1{minus}x}Al{sub x} (x = 0.20, 0.23, 0.26 and 0.37) were investigated by X-ray diffraction and differential scanning calorimetry, after being subjected to different times of ball milling. In all four selected compositions, the close packed hexagonal intermediate {lambda}-phase and the fcc {alpha}-phase (Ag-based solid solution) formed together during the first hour of milling, but subsequently the {lambda}-phase disappeared during continued milling except in the two alloys corresponding to 26 at.%Al and 37 at.%Al where the {lambda}-phase is the equilibrium phase. With continued milling, the complex cubic {mu}-phase formed in the alloys of nominal composition 20, 23 and 26 at.%Al where it is expected in equilibrium alloys. No amorphous phases have been observed in the mechanically alloyed powders in this system.

  20. Polarity dependence of the electrical characteristics of Ag reflectors for high-power GaN-based light emitting diodes

    SciTech Connect (OSTI)

    Park, Jae-Seong; Seong, Tae-Yeon, E-mail: tyseong@korea.ac.kr [Department of Materials Science and Engineering, Korea University, Seoul 136-713 (Korea, Republic of); Han, Jaecheon [Department of LED Business, Chip Development Group, LG Innotek, Paju 413-901 (Korea, Republic of); Ha, Jun-Seok [School of Applied Chemical Engineering, Chonnam National University, Gwangju 500-757 (Korea, Republic of)

    2014-04-28T23:59:59.000Z

    We report on the polarity dependence of the electrical properties of Ag reflectors for high-power GaN-based light-emitting diodes. The (0001) c-plane samples become ohmic after annealing in air. However, the (1122) semi-polar samples are non-ohmic after annealing, although the 300?C-annealed sample shows the lowest contact resistivity. The X-ray photoemission spectroscopy (XPS) results show that the Ga 2p core level for the c-plane samples experiences larger shift toward the valence band than that for the semi-polar samples. The XPS depth profile results show that unlike the c-plane samples, the semi-polar samples contain some amounts of oxygen at the Ag/GaN interface regions. The outdiffusion of Ga atoms is far more significant in the c-plane samples than in the semi-polar samples, whereas the outdiffusion of N atoms is relatively less significant in the c-plane samples. On the basis of the electrical and XPS results, the polarity dependence of the electrical properties is described and discussed.

  1. The crystal and electronic structures of the Li{sub 2-x}Ag{sub 1+x}In{sub 3} (x=0.05) indide

    SciTech Connect (OSTI)

    Chumak, Ihor, E-mail: ihor.chumak@kit.edu [Institute for Applied Materials (IAM), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen (Germany); Pavlyuk, Volodymyr [Department of Inorganic Chemistry, Ivan Franko Lviv National University, Kyryla and Mefodiya Street, 6, 79005 Lviv (Ukraine); Institute of Chemistry, Environment Protection and Biotechnology, Jan Dlugosz University, al. Armii Krajowej 13/15, 42-200 Czestochowa (Poland); Dmytriv, Grygoriy [Department of Inorganic Chemistry, Ivan Franko Lviv National University, Kyryla and Mefodiya Street, 6, 79005 Lviv (Ukraine); Pauly, Hermann [Materials Science, Darmstadt University of Technology, Petersenstrasse 23, D-64287 Darmstadt (Germany); Ehrenberg, Helmut [Institute for Applied Materials (IAM), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen (Germany); Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstr. 15, 76131 Karlsruhe (Germany)

    2013-01-15T23:59:59.000Z

    The crystal structure of Li{sub 2-x}Ag{sub 1+x}In{sub 3} (x=0.05) has been determined on a single crystal synthesized from the elements in a tantalum crucible. The compound crystallizes in orthorhombic space group Pmma (a=9.325 (3) A, b=3.198 (1) A, c=8.043 (3) A at 296 K) with 12 atoms per unit cell and represents a new structure type. The structure of Li{sub 2-x}Ag{sub 1+x}In{sub 3} is closely related to the LaCoAl{sub 4} structure and belongs to the structural family, the representative members of which may be derived from the hexagonal AlB{sub 2} structure type by a combination of internal deformation and substitution. The strong In-In interaction and close to zero electrons concentration around Li and Ag atoms, calculated by LTMO, allow to suggest high mobility of lithium atoms located within the channels formed by the strongly waved [-In-In-] polyanionic chains. - Graphical abstract: The crystal structure of Li{sub 2-x}Ag{sub 1+x}In{sub 3} (x=0.05) indide. Highlights: Black-Right-Pointing-Pointer The crystal structure of Li{sub 2-x}Ag{sub 1+x}In{sub 3} has been determined on a single crystal. Black-Right-Pointing-Pointer A detailed crystal chemical analysis of Li{sub 2-x}Ag{sub 1+x}In{sub 3} was performed. Black-Right-Pointing-Pointer The electronic structure of the title compound was calculated.

  2. Synthesis of visible light driven cobalt tailored Ag{sub 2}O/TiON nanophotocatalyst by reverse micelle processing for degradation of Eriochrome Black T

    SciTech Connect (OSTI)

    Hussain, Syed Tajammul, E-mail: dr_tajammul@yahoo.ca [Nano Science and Catalysis Div. National Centre For Physics, Quaid-i-Azam University Complex, Islamabad 4400 (Pakistan); Rashid [Nano Science and Catalysis Div. National Centre For Physics, Quaid-i-Azam University Complex, Islamabad 4400 (Pakistan) [Nano Science and Catalysis Div. National Centre For Physics, Quaid-i-Azam University Complex, Islamabad 4400 (Pakistan); Department of Chemistry, Quaid-i-Azam University, Islamabad (Pakistan); Anjum, Dalaver [Imaging and Characterization Lab, Blg 3 L0/room 232, 4700, King Abdullah University of Science and Technology, Thuwal 23955-6900 (Saudi Arabia)] [Imaging and Characterization Lab, Blg 3 L0/room 232, 4700, King Abdullah University of Science and Technology, Thuwal 23955-6900 (Saudi Arabia); Siddiqa, Asima [Nano Science and Catalysis Div. National Centre For Physics, Quaid-i-Azam University Complex, Islamabad 4400 (Pakistan)] [Nano Science and Catalysis Div. National Centre For Physics, Quaid-i-Azam University Complex, Islamabad 4400 (Pakistan); Badshah, Amin [Department of Chemistry, Quaid-i-Azam University, Islamabad (Pakistan)] [Department of Chemistry, Quaid-i-Azam University, Islamabad (Pakistan)

    2013-02-15T23:59:59.000Z

    Graphical abstract: Cobalt tailored Ag{sub 2}O/TiON nanophotocatalyst is synthesized using reverse micelle technique and it showed extraordinary photocatalytic activity. Display Omitted Highlights: ? TiON/Ag{sub 2}O/Co nanophotocatalyst is synthesized using microemulsion technique. ? Low temperature anatase phase and outstanding photocatlytic activity is observed. ? Effect of temperature and inert atmosphere on materials phase is investigated. ? Homogeneous dopants distribution and oxygen vacancies are examined. ? Enhancement in surface area, quantum efficiency and optical properties is observed. -- Abstract: An ultra efficient cobalt tailored silver and nitrogen co-doped titania (TiON/Ag{sub 2}O/Co) visible nanophotocatalyst is successfully synthesized using modified reverse micelle processing. Composition, phase, distribution of dopants, functional group analysis, optical properties and morphology of synthesized materials are investigated by means of X-ray diffraction (XRD), transmission electron microscopy (TEM) based techniques and others. Charge states of titanium (Ti) and silver are explored through core-loss electron energy loss spectroscopy (EELS) analysis and X ray photoelectron spectroscopy (XPS). Our characterization results showed that the synthesized nanophotocatalyst consisted of anatase phased qausispherical nanoparticles that exhibited homogeneous distribution of dopants, large surface area, high quantum efficiency and enhanced optical properties. At lower content of doped Co ions, the TiON/Ag{sub 2}O responded with extraordinary photocatalytic properties. The cobalt tailored nanophotocatalyst showed remarkable activity against Eriochrome Black T (EBT). Moreover, comparative degradation behavior of EBT with TiON, Ag{sub 2}O/TiON and Co/Ag{sub 2}O/TiON is also investigated.

  3. Optical microcavities and enhanced electroluminescence from electroformed Al-Al{sub 2}O{sub 3}-Ag diodes

    SciTech Connect (OSTI)

    Hickmott, T. W. [Department of Physics, State University of New York at Albany, Albany, New York 12222 (United States)

    2013-12-21T23:59:59.000Z

    Electroluminescence (EL) and electron emission into vacuum (EM) occur when a non-destructive dielectric breakdown of Al-Al{sub 2}O{sub 3}-Ag diodes, electroforming, results in the development of a filamentary region in which current-voltage (I-V) characteristics exhibit voltage-controlled negative resistance. The temperature dependence of I-V curves, EM, and, particularly, EL of Al-Al{sub 2}O{sub 3}-Ag diodes with anodic Al{sub 2}O{sub 3} thicknesses between 12?nm and 30?nm, has been studied. Two filters, a long-pass (LP) filter with transmission of photons with energies less than 3.0?eV and a short-pass (SP) filter with photon transmission between 3.0 and 4.0?eV, have been used to characterize EL. The voltage threshold for EL with the LP filter, V{sub LP}, is ?1.5?V. V{sub LP} is nearly independent of Al{sub 2}O{sub 3} thickness and of temperature and is 0.30.6?V less than the threshold voltage for EL for the SP filter, V{sub SP}. EL intensity is primarily between 1.8 and 3.0?eV when the bias voltage, V{sub S} ? 7?V. EL in the thinnest diodes is enhanced compared to EL in thicker diodes. For increasing V{sub S}, for diodes with the smallest Al{sub 2}O{sub 3} thicknesses, there is a maximum EL intensity, L{sub MX}, at a voltage, V{sub LMX}, followed by a decrease to a plateau. L{sub MX} and EL intensity at 4.0?V in the plateau region depend exponentially on Al{sub 2}O{sub 3} thickness. The ratio of L{sub MX} at 295?K for a diode with 12?nm of Al{sub 2}O{sub 3} to L{sub MX} for a diode with 25?nm of Al{sub 2}O{sub 3} is ?140. The ratio of EL intensity with the LP filter to EL intensity with the SP filter, LP/SP, varies between ?3 and ?35; it depends on Al{sub 2}O{sub 3} thickness and V{sub S}. Enhanced EL is attributed to the increase of the spontaneous emission rate of a dipole in a non-resonant optical microcavity. EL photons interact with the Ag and Al films to create surface plasmon polaritons (SPPs) at the metal-Al{sub 2}O{sub 3} interfaces. SPPs generate large electromagnetic fields in the filamentary region of the electroformed Al-Al{sub 2}O{sub 3}-Ag diode, which then acts as an optical microcavity. A model is proposed for electronic processes in electroformed Al-Al{sub 2}O{sub 3}-Ag diodes.

  4. Structure and properties of YbZnSn, YbAgSn, and Yb{sub 2}Pt{sub 2}Pb

    SciTech Connect (OSTI)

    Poettgen, R.; Arpe, P.E.; Kussmann, D.; Kuennen, B.; Kotzyba, G.; Muellmann, R.; Mosel, B.D. [Univ. Muenster (Germany)] [Univ. Muenster (Germany); Felser, C. [Johannes Gutenberg Univ., Mainz (Germany). Inst. fuer Anorganische Chemie] [Johannes Gutenberg Univ., Mainz (Germany). Inst. fuer Anorganische Chemie

    1999-07-01T23:59:59.000Z

    YbZnSn, YbAgSn, and Yb{sub 2}Pt{sub 2}Pb were synthesized by reacting the elements in sealed tantalum tubes in a high-frequency furnace. The structures of YbAgSn and Yb{sub 2}Pt{sub 2}Pb were refined from single crystal X-ray data: YbAgPb type, P{bar 6}m2, a = 479.2(2) pm, c = 1087.3(3) pm, wR2 = 0.050, BASF = 0.34(8), 509 F{sup 2} values, 18 variables for Yb{sub 2}Pt{sub 2}Pb. The lattice constants of YbZnSn are confirmed: NdPtSb type, P6{sub 3}mc, a = 464.7(1) pm, c = 747.7(2) pm. The stannides YbZnSn and YbAgSn crystallize with superstructures of the AlB{sub 2} type. The zinc (silver) and tin atoms form ordered Zn{sub 3}Sn{sub 3} and Ag{sub 3}Sn{sub 3} hexagons, respectively. Magnetic susceptibility measurements on YbZnSn and YbAgSn show Pauli paramagnetism with room temperature susceptibilities of 2.5(1) {times} 10{sup {minus}9} and 4.6(1) {times} 10{sup {minus}9} m{sup 3}/mol. Electrical resistivity measurements indicate metallic conductivity with specific resistivities of 440 {+-} 40 {mu}{Omega}cm (YbZnSn) and 490 {+-} 40 {mu}{Omega}cm (YbAgSn) at 300 K. {sup 119}Sn Moessbauer spectra of YbZnSn show a single signal at room temperature with an isomer shift of {delta} = 1.85(1) mm/s. YbAgSn shows two superimposed signals at 78 K: a singlet at {delta} = 1.94(1) mm/s and a second signal at {delta} = 1.99(1) mm/s subjected to quadrupole splitting of {Delta}E{sub Q} = 1.35(1) mm/s, in agreement with the two crystallographically different tin sites.

  5. Complete Phase I Tests As Described in the Multi-lab Test Plan for the Evaluation of CH3I Adsorption on AgZ

    SciTech Connect (OSTI)

    Bruffey, S. H. [ORNL; Jubin, R. T. [ORNL

    2014-09-30T23:59:59.000Z

    Silver-exchanged mordenite (AgZ) has been identified as a potential sorbent for iodine present in the off-gas streams of a used nuclear fuel reprocessing facility. In such a facility, both elemental and organic forms of iodine are released from the dissolver in gaseous form. These species of iodine must be captured with high efficiency for a facility to avoid radioactive iodine release above regulatory limits in the gaseous effluent of the plant. Studies completed at Idaho National Laboratory (INL) examined the adsorption of organic iodine in the form of CH3I by AgZ. Upon breakthrough of the feed gas through the sorbent bed, elemental iodine was observed in the effluent stream, despite the fact that the only source of iodine in the system was the CH3I in the feed gas.1 This behavior does not appear to have been reported previously nor has it been independently confirmed. Thus, as a result of these prior studies, multiple knowledge gaps relating to the adsorption of CH3I by AgZ were identified, and a multi-lab test plan, including Oak Ridge National Laboratory (ORNL), INL, Pacific Northwest National Laboratory (PNNL), and Sandia National Laboratories, was formulated to address each in a systematic way.2 For this report, the scope of work for ORNL was further narrowed to three thin-bed experiments that would characterize CH3I adsorption onto AgZ in the presence of water, NO, and NO2. Completion of these three-thin bed experiments demonstrated that organic iodine in the form of CH3I was adsorbed by reduced silver mordenite (Ag0Z) to a 50% higher loading than that of I2 when adsorbed from a dry air stream. Adsorption curves suggest different adsorption mechanisms for I2 and CH3I. In the presence of NO and NO2 gas, the loading of CH3I onto Ag0Z is suppressed and may be reversible. Further, the presence of NO and NO2 gas appears to oxidize CH3I to I2; this is indicated by an adsorption curve similar to that of I2 on Ag0Z. Finally, the loss of organic iodine loading capacity by Ag0Z in the presence of NOx is unaffected by the addition of water vapor to the gas stream; no marked additional loss in capacity or retention was observed.

  6. Enhanced spin signals due to native oxide formation in Ni{sub 80}Fe{sub 20}/Ag lateral spin valves.

    SciTech Connect (OSTI)

    Mihajlovic, G.; Schreiber, D. K.; Liu, Y.; Pearson, J. E.; Bader, S. D.; Petford-Long, A. K.; Hoffmann, A.; Northwestern Univ.

    2010-01-01T23:59:59.000Z

    Large nonlocal spin valve signals are reported in mesoscopic Ni{sub 80}Fe{sub 20}/Ag lateral spin valves upon exposing them to air. Magnetotransport measurements combined with transmission electron microscopy show that the formation of a native oxide layer at the Ni{sub 80}Fe{sub 20}/Ag interface is responsible for the large signals. The results indicate that lateral spin valves with superior performance to those based on high-resistance tunnel barriers can be achieved via controllable growth of native permalloy oxides.

  7. Photometry of symbiotic stars XI. EG And, Z And, BF Cyg, CH Cyg, CI Cyg, V1329 Cyg, TX CVn, AG Dra, RW Hya, QW Sge, IV Vir and the LMXB V934 Her

    E-Print Network [OSTI]

    A. Skopal; T. Pribulla; M. Vanko; Z. Velic; E. Semkov; M. Wolf; A. Jones

    2004-02-06T23:59:59.000Z

    We present new photometric observations of EG And, Z And, BF Cyg, CH Cyg, CI Cyg, V1329 Cyg, TX CVn, AG Dra, RW Hya, AR Pav, AG Peg, AX Per, QW Sge, IV Vir and the peculiar M giant V934 Her. The current issue gathers observations of these objects to December 2003.

  8. IRON IM PURITY IN AgC1 USING MOSSBAUER EFFECT 209 charged Co'7 is present as Fe++ only. This is to be

    E-Print Network [OSTI]

    Stillinger, Frank

    IRON IM PURITY IN AgC1 USING MOSSBAUER EFFECT 209 charged Co'7 is present as Fe++ only for the first time in the Mossbauer effect. (e) The silver-ion-vacancy jump times are much faster than those

  9. TiO2-modified Ag-CuO Reactive Air Brazes for Improved Wettability on Mixed Ionic/Electronic Conductors

    SciTech Connect (OSTI)

    Hardy, John S.; Weil, K. Scott; Kim, Jin Yong Y.; Thomsen, Ed C.; Darsell, Jens T.

    2005-03-01T23:59:59.000Z

    Mixed ionic/electronic conducting perovskite oxides such as lanthanum strontium cobalt ferrite (LSCF) are strong candidates for potential use in a number of electrochemical devices, including gas separation membranes and solid oxide fuel cells (SOFC). Underlying the excitement over the these novel ceramics is the engineering challenge of effectively incorporating them into practical devices. Taking full advantage of the unique properties of advanced ceramics such as mixed conducting oxides depends in large part on being able to develop reliable joining techniques. Earlier studies have indicated that Ag-CuO reactive air braze (RAB) compositions are effective in joining to LSCF. Meanwhile, it has been found that small additions of as little as 0.5 mol% titanium oxide to Ag-CuO RAB compositions cause a dramatic increase in the wettability of RAB on many oxide ceramic surfaces. Therefore the wettabilty of Ag-CuO-TiO2 brazes on LSCF substrates will be examined and the flexural strength, microstructure, and conductivity of joints in LSCF made using Ag-CuO-TiO2 brazes will be discussed. Long-term aging effects on conductivity and microstructure will also be presented.

  10. 0361-0128/01/3331/339-28 $6.00 339 The Tuscarora Au-Ag District: Eocene Volcanic-Hosted

    E-Print Network [OSTI]

    Tingley, Joseph V.

    87801 RICHARD M. TOSDAL, Mineral Deposit Research Unit, Department of Earth and Ocean Sciences, University of British Columbia, 6339 Stores Road, Vancouver, British Columbia, Canada V6T 1Z4 AND JOSEPH P that is characterized by relatively high Ag/Au ra- tios (110150), narrow alteration zones, and quartz and carbonate

  11. Charge-transfer-induced suppression of galvanic replacement and synthesis of (Au-Ag)-Au double shell nanoparticles for highly uniform, robust and sensitive bioprobes

    SciTech Connect (OSTI)

    Dao Thi Ngoc Anh; Singh, Prerna; Shankar, Cheshta; Mott, Derrick; Maenosono, Shinya [Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa 923-1292 (Japan)

    2011-08-15T23:59:59.000Z

    The synthesis of double shell (Au-Ag)-Au nanoparticles is accomplished through suppression of the galvanic replacement reaction caused by an electron transfer phenomenon. The resulting nanoparticles are monodisperse with a thin and uniform second Au shell. These particles are ultimately expected to lead to sensitive probes for biomolecular sensing and diagnostics.

  12. Density functional simulations of phase change materials: disordered phases of Ge8Sb2Te11 and Ag/In/Sb/Te alloys

    E-Print Network [OSTI]

    E*PCOS2009 Density functional simulations of phase change materials: disordered phases of Ge8Sb2Te75.0Te17.7 (AIST). These represent two families used widely as phase change materials: pseudobinary and more flexible than those of Ag. Key words: Phase change materials, density functional calculations

  13. Texas AgriLife Research & Extension Center, 1102 East FM 1294, Lubbock, TX 79403 (806) 746-6101, FAX (806) 746-4057, ctrostle@ag.tamu.edu

    E-Print Network [OSTI]

    Mukhtar, Saqib

    79403 (806) 746-6101, FAX (806) 746-4057, ctrostle@ag.tamu.edu Guar Update, West Texas currently consists of two primary entities: West Texas Guar, Brownfield, TX, (806) 637-4662, http://www.westtexasguar.com (Klint Forbes, owner/manager, klint@westtexasguar.com). West Texas Guar currently serves as the only

  14. New calorimetric studies of inorganic fluorine compounds. [Silver uranium fluoride, AgUF/sub 6/; cesium fluoroxysulfate, CsSO/sub 4/F

    SciTech Connect (OSTI)

    O'Hare, P.A.G.; Flotow, H.E.; Appleman, E.H.; Malm, J.G.

    1982-04-01T23:59:59.000Z

    In this paper, recently determined enthalpies of formation are presented for two fluorides, silver(I) uranium(V) fluoride, AgUF/sub 6/, and cesium fluoroxysulfate, CsSO/sub 4/F. In addition the derivation of entropy is presented for CsSO/sub 4/F.

  15. Background picture courtesy of EnBW AG The special properties of zeotropic mixtures and the complex =low geometry created by the corrugated plates make the

    E-Print Network [OSTI]

    Lausanne, Ecole Polytechnique Fédérale de

    are particularly promising candidates. In this frame, EnBW Energie Baden-Württemberg AG operates the geothermal power plant Bruchsal (D). To ensure ef=icient operation to the geothermal temperature to conserve the Carnot ef=iciency, sometimes

  16. USDA Ag in the Classroom-www.agclassroom.org Oats, Peas, Beans and Barley Grow -Grades 2-5: S-1

    E-Print Network [OSTI]

    Mathis, Wayne N.

    USDA Ag in the Classroom-www.agclassroom.org Oats, Peas, Beans and Barley Grow -Grades 2-5: S-1 Oats, Peas, Beans and Barley Grow (do the motions while singing) Oats, peas, beans and barley grow, Oats, peas, beans and barley grow, Can you or I or anyone know How oats, peas, beans and barley grow

  17. USDA Ag in the Classroom-www.agclassroom.org Oats, Peas, Beans and Barley Grow -Grades PreK-1: S-1

    E-Print Network [OSTI]

    Mathis, Wayne N.

    USDA Ag in the Classroom-www.agclassroom.org Oats, Peas, Beans and Barley Grow -Grades PreK-1: S-1 Oats, Peas, Beans and Barley Grow (do the motions while singing) Oats, peas, beans and barley grow, Oats, peas, beans and barley grow, Can you or I or anyone know How oats, peas, beans and barley grow

  18. On the role of residual Ag in nanoporous Au catalysts for CO oxidation: A combined micro-reactor and TAP reactor study

    E-Print Network [OSTI]

    Pfeifer, Holger

    On the role of residual Ag in nanoporous Au catalysts for CO oxidation: A combined micro-reactor and TAP reactor study L.C. Wang1 , H.J. Jin2 , D. Widmann1 , J. Weissmller3 , R.J. Behm1 * 1 Institute and temporal analysis of products (TAP) reactor measurements, comparing four different NPG samples

  19. LA-UR-14-26016 LA-UR-14-26016 Unclassified Heidi Sandoval

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron 9 5 - -/e),,s - 6157 / The Cold War is4-223796016

  20. Ab initio study of MXe{sub n}{sup +} (M=Cu, Ag, and Au; n=1,2)

    SciTech Connect (OSTI)

    Li Xinying; Cao Xue [School of Physics and Electronics, Henan University, Kaifeng 475004 (China)

    2008-02-15T23:59:59.000Z

    The equilibrium geometries, vibrational frequencies, dissociation energies, and populations of the title species were studied at Hartree-Fock (HF), second-order Moeller-Plesset (MP2), and coupled-cluster singles-doubles (triples) [CCSD(T)] levels. The electron correlation effects and relativistic effects on the geometry and stability were investigated at the CCSD(T) level. Both effects stabilize title species. The populations analyses show that M-Xe bonding is dominated by electrostatic interactions and the best theoretical estimate of the dissociation energies are 1.104 and 2.260 eV for AuXe{sup +} and AuXe{sub 2}{sup +}, respectively. The Cu and Ag are weakly bonded to Xe compared to Au.