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


1

Configurations The  

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

Flexibility in Testing Configurations The PSEL's infrastructure addresses critical issues of PV reliability and power availability. The lab offers four different load configuration...

2

Module Configuration  

DOE Patents [OSTI]

A stand alone battery module including: (a) a mechanical configuration; (b) a thermal management configuration; (c) an electrical connection configuration; and (d) an electronics configuration. Such a module is fully interchangeable in a battery pack assembly, mechanically, from the thermal management point of view, and electrically. With the same hardware, the module can accommodate different cell sizes and, therefore, can easily have different capacities. The module structure is designed to accommodate the electronics monitoring, protection, and printed wiring assembly boards (PWAs), as well as to allow airflow through the module. A plurality of modules may easily be connected together to form a battery pack. The parts of the module are designed to facilitate their manufacture and assembly.

Oweis, Salah (Ellicott City, MD); D'Ussel, Louis (Bordeaux, FR); Chagnon, Guy (Cockeysville, MD); Zuhowski, Michael (Annapolis, MD); Sack, Tim (Cockeysville, MD); Laucournet, Gaullume (Paris, FR); Jackson, Edward J. (Taneytown, MD)

2002-06-04T23:59:59.000Z

3

Edison Configuration  

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

Configuration Configuration Configuration NERSC's newest supercomputer, named Edison after U.S. inventor and businessman Thomas Alva Edison, will have a peak performance of more than 2 petaflops (PF, or 1015 floating point operations per second) when fully installed in 2013. The integrated storage system will have more than 6 petabytes (PB) of storage with a peak I/O bandwidth of 140 gigabytes (GB) per second. The product is known as a Cray XC30 (internal name "Cascade"), and the NERSC acquistion project is known as "NERSC 7." Edison will be installed in two phases. Phase I Installation: 4Q 2012 Early User Access: Started in February 2013. All users were enabled March 2, 2013. System Overview Cray Cascade supercomputer 664 computes nodes with 64 GB memory per node

4

Franklin Configuration  

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

Configuration Configuration Franklin Configuration Franklin is a Cray XT4 with a peak performance of 352 TFlops, 38,288 processor cores, 78 TB of memory, and 436 TB of scratch disk space. Franklin was ranked as the world's eighth most powerful supercomputer in November 2008, and was No. 26 on the November 2010 Top 500 List. Quad CoreAMDOpteronprocessor Compute Nodes Franklin has 9,572 compute nodes, each with a quad-core AMD 'Budapest' 2.3 GHz processor. Read More » Login Nodes Franklin has 10 internal login nodes and 1 external login node. Read More » Files systems The Franklin system has 4 different file systems mounted which provide different levels of disk storage, I/O performance and file permanence. There are two Lustre file systems each with a peak performance of 17

5

Edison Configuration  

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

Configuration Configuration Configuration NERSC's newest supercomputer, named Edison after U.S. inventor and businessman Thomas Alva Edison, has a peak performance of 2.39 petaflops/sec, 124,608 compute cores for running scientific applications, 332 Terabytes of memory, and 7.5 Petabytes of online disk storage with a peak I/O bandwidth of 168 gigabytes (GB) per second. The product is known as a Cray XC30 (internal name "Cascade"), and the NERSC acquistion project is known as "NERSC 7." System Overview Cray XC30 supercomputer Peak performance 2.39 petaflops/sec Sustained application performance on NERSC SSP codes: 258 Tflop/s (vs. 144 Tflop/s for Hopper) 5,192 computes nodes, 124,608 cores in total Cray Aries high-speed interconnect with Dragon Flay topoplogy (0.25 μs to 3.7 μs MPI latency, ~8GB/sec MPI bandwidth)

6

Carver Configuration  

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

Configuration Configuration Configuration Overview Carver, a liquid-cooled IBM iDataPlex system, has 1202 compute nodes (9,984 processor cores). This represents a theoretical peak performance of 106.5 Teraflops/sec. Note that the above node count includes hardware that is dedicated to various strategic projects and experimental testbeds (e.g., Hadoop). As such, not all 1202 nodes will be available to all users at all times. All nodes are interconnected by 4X QDR InfiniBand technology, providing 32 Gb/s of point-to-point bandwidth for high-performance message passing and I/O. Compute Nodes 1,120 nodes each have two quad-core Intel Xeon X5550 ("Nehalem") 2.67 GHz processors (eight cores/node); 80 nodes each have two six-core Intel Xeon X5650 ("Westmere") 2.67 GHz processors (12 cores/node). 960 of the

7

Circular free-electron laser  

DOE Patents [OSTI]

A high efficiency, free electron laser utilizing a circular relativistic electron beam accelerator and a circular whispering mode optical waveguide for guiding optical energy in a circular path in the circular relativistic electron beam accelerator such that the circular relativistic electron beam and the optical energy are spatially contiguous in a resonant condition for free electron laser operation. Both a betatron and synchrotron are disclosed for use in the present invention. A free electron laser wiggler is disposed around the circular relativistic electron beam accelerator for generating a periodic magnetic field to transform energy from the circular relativistic electron beam to optical energy.

Brau, Charles A. (Los Alamos, NM); Kurnit, Norman A. (Santa Fe, NM); Cooper, Richard K. (Los Alamos, NM)

1984-01-01T23:59:59.000Z

8

In Plane Conductivity Testing, BekkTech LLC  

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

In Plane Conductivity Testing Meeting ACS San Francisco 9-14-2006 Presented by Tim Bekkedahl High Temperature Membrane Working Group Subcontractor to FSECUCF DOE Award No....

9

Measurement of the in-plane shear modulus of medium-density fibreboard by torsional and flexural vibration tests  

Science Journals Connector (OSTI)

Abstract The in-plane shear modulus (IPSM) of medium-density fibreboard (MDF) was obtained via a torsional vibration (TV) test using the specimen with various configurations and a subsequent numerical analysis. Because the out-of-plane shear modulus (OPSM) of MDF was much lower than the IPSM, the difference between the IPSM and OPSM had to be considered in the TV test. Therefore, the OPSM value was measured from the flexural vibration (FV) tests, and it was applied for the calculation of the IPSM value. The experimental and numerical results indicated that the TV test is effective to obtain the IPSM of MDF accurately under various configurations of the specimen.

Hiroshi Yoshihara; Masahiro Yoshinobu

2015-01-01T23:59:59.000Z

10

OMB Circular A-76 (Revised)  

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

EXECUTIVE OFFICE OF THE PRESIDENT EXECUTIVE OFFICE OF THE PRESIDENT OFFICE OF MANAGEMENT AND BUDGET WASHINGTON, DC 20503 May 29, 2003 CIRCULAR NO. A-76 (REVISED) TO THE HEADS OF EXECUTIVE DEPARTMENTS AND ESTABLISHMENTS SUBJECT: Performance of Commercial Activities 1. Purpose. This circular establishes federal policy for the competition of commercial activities. 2. Supersession. This circular supersedes Office of Management and Budget (OMB) Circular No. A-76 (Revised 1999), August 4, 1983; Circular No. A-76 Revised Supplemental Handbook (Revised 2000), March 1996; Office of Federal Procurement Policy Letter 92-1, "Inherently Governmental Functions," September 23, 1992; and OMB Transmittal Memoranda 1 through 25, Performance of Commercial Activities. 3. Authority. Reorganization Plan No. 2 of 1970 (31 U.S.C. § 1111); Executive Order 11541; the Office

11

Circular chemiresistors for microchemical sensors  

DOE Patents [OSTI]

A circular chemiresistor for use in microchemical sensors. A pair of electrodes is fabricated on an electrically insulating substrate. The pattern of electrodes is arranged in a circle-filling geometry, such as a concentric, dual-track spiral design, or a circular interdigitated design. A drop of a chemically sensitive polymer (i.e., chemiresistive ink) is deposited on the insulating substrate on the electrodes, which spreads out into a thin, circular disk contacting the pair of electrodes. This circularly-shaped electrode geometry maximizes the contact area between the pair of electrodes and the polymer deposit, which provides a lower and more stable baseline resistance than with linear-trace designs. The circularly-shaped electrode pattern also serves to minimize batch-to-batch variations in the baseline resistance due to non-uniform distributions of conductive particles in the chemiresistive polymer film.

Ho, Clifford K. (Albuquerque, NM)

2007-03-13T23:59:59.000Z

12

COMPARISON OF MICRO-INCH IN-PLANE AND OUT-OF-PLANE RESPONSE OF CRACKS  

E-Print Network [OSTI]

limestone quarries. In two locations, sensors that measure in-plane and normal displacement were installed

13

Nuclear spin circular dichroism  

SciTech Connect (OSTI)

Recent years have witnessed a growing interest in magneto-optic spectroscopy techniques that use nuclear magnetization as the source of the magnetic field. Here we present a formulation of magnetic circular dichroism (CD) due to magnetically polarized nuclei, nuclear spin-induced CD (NSCD), in molecules. The NSCD ellipticity and nuclear spin-induced optical rotation (NSOR) angle correspond to the real and imaginary parts, respectively, of (complex) quadratic response functions involving the dynamic second-order interaction of the electron system with the linearly polarized light beam, as well as the static magnetic hyperfine interaction. Using the complex polarization propagator framework, NSCD and NSOR signals are obtained at frequencies in the vicinity of optical excitations. Hartree-Fock and density-functional theory calculations on relatively small model systems, ethene, benzene, and 1,4-benzoquinone, demonstrate the feasibility of the method for obtaining relatively strong nuclear spin-induced ellipticity and optical rotation signals. Comparison of the proton and carbon-13 signals of ethanol reveals that these resonant phenomena facilitate chemical resolution between non-equivalent nuclei in magneto-optic spectra.

Vaara, Juha, E-mail: juha.vaara@iki.fi [NMR Research Group, Department of Physics, University of Oulu, P.O. Box 3000, FIN-90014 Oulu (Finland)] [NMR Research Group, Department of Physics, University of Oulu, P.O. Box 3000, FIN-90014 Oulu (Finland); Rizzo, Antonio [Istituto per i Processi Chimico-Fisici del Consiglio Nazionale delle Ricerche (IPCF-CNR), Area della Ricerca, via G. Moruzzi 1, I-56124 Pisa (Italy)] [Istituto per i Processi Chimico-Fisici del Consiglio Nazionale delle Ricerche (IPCF-CNR), Area della Ricerca, via G. Moruzzi 1, I-56124 Pisa (Italy); Kauczor, Joanna; Norman, Patrick [Department of Physics, Chemistry and Biology, Linkping University, S-58183 Linkping (Sweden)] [Department of Physics, Chemistry and Biology, Linkping University, S-58183 Linkping (Sweden); Coriani, Sonia, E-mail: coriani@units.it [Dipartimento di Scienze Chimiche e Farmaceutiche, Universit degli Studi di Trieste, Via L. Giorgieri 1, I-34127 Trieste (Italy)] [Dipartimento di Scienze Chimiche e Farmaceutiche, Universit degli Studi di Trieste, Via L. Giorgieri 1, I-34127 Trieste (Italy)

2014-04-07T23:59:59.000Z

14

In-Plane Correlations in a Polymer-Supported Lipid Membrane Measured by Off-Specular Neutron Scattering  

Science Journals Connector (OSTI)

Polymer-supported single lipid bilayers are models to study configurations of cell membranes. We used off-specular neutron scattering to quantify in-plane height-height correlations of interfacial fluctuations of such a lipid bilayer. As temperature decreased from 37?C to 25?C, the polymer swells and the polymer-supported lipid membrane deviates from its initially nearly planar structure. A correlation length characteristic of capillary waves changes from 30???m at 37?C to 11???m at 25?C, while the membrane bending rigidity remains roughly constant in this temperature range.

Michael S. Jablin; Mikhail Zhernenkov; Boris P. Toperverg; Manish Dubey; Hillary L. Smith; Ajay Vidyasagar; Ryan Toomey; Alan J. Hurd; Jaroslaw Majewski

2011-03-28T23:59:59.000Z

15

In Plane Conductivity Testing, BekkTech LLC | Department of Energy  

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

In Plane Conductivity Testing, BekkTech LLC In Plane Conductivity Testing, BekkTech LLC High Temperature Membrane Working Group Meeting ACS, San Francisco 9-14, 2006, presented by...

16

PDSF Hardware Configuration  

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

Configuration Configuration Hardware Configuration Interactive (login) Nodes This page describes the interactive (login) nodes at PDSF. Read More » Compute Nodes Information about the PDSF compute (batch) nodes. Read More » Data Transfer Nodes This page describes the grid and data transfer nodes at PDSF. Read More » Eliza File Systems The eliza file systems at PDSF are used for bulk file storage. Read More » Other File Systems This page describes home directories, scratch space, /common and NGF. Read More » Specific Group Hardware This page describes the extra hardware used by the various scientific groups that use PDSF. Read More » PDSF at a Glance Interactive Nodes 4 pdsf.nersc.gov pdsf[1-4].nersc.gov Compute Nodes 232 2632 Cores GPFS Filesystems 835TB Eliza[1-18] Local Disk

17

Circular permutant GFP insertion folding reporters  

SciTech Connect (OSTI)

Provided are methods of assaying and improving protein folding using circular permutants of fluorescent proteins, including circular permutants of GFP variants and combinations thereof. The invention further provides various nucleic acid molecules and vectors incorporating such nucleic acid molecules, comprising polynucleotides encoding fluorescent protein circular permutants derived from superfolder GFP, which polynucleotides include an internal cloning site into which a heterologous polynucleotide may be inserted in-frame with the circular permutant coding sequence, and which when expressed are capable of reporting on the degree to which a polypeptide encoded by such an inserted heterologous polynucleotide is correctly folded by correlation with the degree of fluorescence exhibited.

Waldo, Geoffrey S. (Santa Fe, NM); Cabantous, Stephanie (Los Alamos, NM)

2011-06-14T23:59:59.000Z

18

Circular permutant GFP insertion folding reporters  

SciTech Connect (OSTI)

Provided are methods of assaying and improving protein folding using circular permutants of fluorescent proteins, including circular permutants of GFP variants and combinations thereof. The invention further provides various nucleic acid molecules and vectors incorporating such nucleic acid molecules, comprising polynucleotides encoding fluorescent protein circular permutants derived from superfolder GFP, which polynucleotides include an internal cloning site into which a heterologous polynucleotide may be inserted in-frame with the circular permutant coding sequence, and which when expressed are capable of reporting on the degree to which a polypeptide encoded by such an inserted heterologous polynucleotide is correctly folded by correlation with the degree of fluorescence exhibited.

Waldo, Geoffrey S. (Santa Fe, NM); Cabantous, Stephanie (Los Alamos, NM)

2008-06-24T23:59:59.000Z

19

Circular permutant GFP insertion folding reporters  

DOE Patents [OSTI]

Provided are methods of assaying and improving protein folding using circular permutants of fluorescent proteins, including circular permutants of GFP variants and combinations thereof. The invention further provides various nucleic acid molecules and vectors incorporating such nucleic acid molecules, comprising polynucleotides encoding fluorescent protein circular permutants derived from superfolder GFP, which polynucleotides include an internal cloning site into which a heterologous polynucleotide may be inserted in-frame with the circular permutant coding sequence, and which when expressed are capable of reporting on the degree to which a polypeptide encoded by such an inserted heterologous polynucleotide is correctly folded by correlation with the degree of fluorescence exhibited.

Waldo, Geoffrey S.; Cabantous, Stephanie

2013-04-16T23:59:59.000Z

20

Circular permutant GFP insertion folding reporters  

SciTech Connect (OSTI)

Provided are methods of assaying and improving protein folding using circular permutants of fluorescent proteins, including circular permutants of GFP variants and combinations thereof. The invention further provides various nucleic acid molecules and vectors incorporating such nucleic acid molecules, comprising polynucleotides encoding fluorescent protein circular permutants derived from superfolder GFP, which polynucleotides include an internal cloning site into which a heterologous polynucleotide may be inserted in-frame with the circular permutant coding sequence, and which when expressed are capable of reporting on the degree to which a polypeptide encoded by such an inserted heterologous polynucleotide is correctly folded by correlation with the degree of fluorescence exhibited.

Waldo, Geoffrey S; Cabantous, Stephanie

2013-02-12T23:59:59.000Z

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


21

Gene synthesis by circular assembly amplification  

E-Print Network [OSTI]

Gene synthesis by circular assembly amplification Duhee Bang & George M Church Here we report the development of a gene-synthesis technology, circular assembly amplification. In this approach, we first error-rich products, thereby substantially improving gene-synthesis quality. We used this method

Church, George M.

22

Substation Configuration Reliability 1 Reliability of Substation Configurations  

E-Print Network [OSTI]

Substation Configuration Reliability 1 Reliability of Substation Configurations Daniel Nack, Iowa substation, it still contains what could be described as weak points or points of failure that would lead to loss of load. By knowing how to calculate the reliability of different substation configurations

McCalley, James D.

23

Magnetic Vortex Core Reversal by Low-Field Excitations  

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

Magnetic Vortex Core Reversal by Low-Field Excitations Print In micrometer-sized magnetic thin films, the magnetization typically adopts an in-plane, circular configuration known...

24

HTAR Client Configuration and Installation  

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

Configuration and Installation Configuration and Installation HTAR Configuration and Installation HTAR is an archival utility similar to gnu-tar that allows for the archiving and extraction of local files into and out of HPSS. Configuration Instructions This distribution has default configuration settings which will work for most environments. If you want to use the default values (recommended) you can skip to the section labeled INSTALLATION INSTRUCTIONS. In certain environments, for example if your installation is on a machine which has more than one network interface, you may want to change some of these default settings. To help with this, an interactive Configure script is provided. To use it do $ ./Configure prior to installing. Configure will provide a description of the options

25

Date: January 16, 2014 Subject: OMB Omni-Circular  

E-Print Network [OSTI]

) on December 26, 2013. The Omni-Circular consolidates, streamlines and supersedes eight existing Circulars, including Circulars A-21, A-110 and A-133. The new regulations will not take effect until December 26, 2014

Grishok, Alla

26

Policy Flash 2013-37 Federal Acquisition Circular (FAC) 2005...  

Energy Savers [EERE]

37 Federal Acquisition Circular (FAC) 2005-66 Policy Flash 2013-37 Federal Acquisition Circular (FAC) 2005-66 Attached is Policy Flash 2013-37 Federal Acquisition Circular (FAC)...

27

Policy Flash 2013-27 Federal Acquisition Circular (FAC) 2005...  

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

27 Federal Acquisition Circular (FAC) 2005-65 Policy Flash 2013-27 Federal Acquisition Circular (FAC) 2005-65 Attached is Policy Flash 2013-27 Federal Acquisition Circular (FAC)...

28

Power converter connection configuration  

DOE Patents [OSTI]

EMI shielding is provided for power electronics circuits and the like via a direct-mount reference plane support and shielding structure. The thermal support may receive one or more power electronic circuits. The support may aid in removing heat from the circuits through fluid circulating through the support. The support forms a shield from both external EMI/RFI and from interference generated by operation of the power electronic circuits. Features may be provided to permit and enhance connection of the circuitry to external circuitry, such as improved terminal configurations. Modular units may be assembled that may be coupled to electronic circuitry via plug-in arrangements or through interface with a backplane or similar mounting and interconnecting structures.

Beihoff, Bruce C. (Wauwatosa, WI); Kehl, Dennis L. (Milwaukee, WI); Gettelfinger, Lee A. (Brown Deer, WI); Kaishian, Steven C. (Milwaukee, WI); Phillips, Mark G. (Brookfield, WI); Radosevich, Lawrence D. (Muskego, WI)

2008-11-11T23:59:59.000Z

29

A two-axis in-plane motion measurement system based on optical beam deflection  

SciTech Connect (OSTI)

Measurement of in-plane motion with high resolution and large bandwidth enables model-identification and real-time control of motion-stages. This paper presents an optical beam deflection based system for measurement of in-plane motion of both macro- and micro-scale motion stages. A curved reflector is integrated with the motion stage to achieve sensitivity to in-plane translational motion along two axes. Under optimal settings, the measurement system is shown to theoretically achieve sub-angstrom measurement resolution over a bandwidth in excess of 1 kHz and negligible cross-sensitivity to linear motion. Subsequently, the proposed technique is experimentally demonstrated by measuring the in-plane motion of a piezo flexure stage and a scanning probe microcantilever. For the former case, reflective spherical balls of different radii are employed to measure the in-plane motion and the measured sensitivities are shown to agree with theoretical values, on average, to within 8.3%. For the latter case, a prototype polydimethylsiloxane micro-reflector is integrated with the microcantilever. The measured in-plane motion of the microcantilever probe is used to identify nonlinearities and the transient dynamics of the piezo-stage upon which the probe is mounted. These are subsequently compensated by means of feedback control.

Sriramshankar, R.; Mrinalini, R. Sri Muthu; Jayanth, G. R. [Department of Instrumentation and Applied Physics, Indian Institute of Science, Bangalore 560012 (India)] [Department of Instrumentation and Applied Physics, Indian Institute of Science, Bangalore 560012 (India)

2013-10-15T23:59:59.000Z

30

Spectroscopy 16 (2002) 121125 121 Synchrotron radiation circular dichroism  

E-Print Network [OSTI]

undamaged even after long periods of exposure in the Synchroton Radiation Circular Dichroism (SRCD) beam [2

Wallace, Bonnie Ann

31

Federal Acquisition Circular 2005-60  

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

Circular 2005-60 Circular 2005-60 SUMMARY: This document summarizes the Federal Acquisition Regulation (FAR) rules agreed to by the Civilian Agency Acquisition Council and the Defense Acquisition Regulations Council (Councils) in this Federal Acquisition Circular (FAC) 2005-60. Item Subject FAR Case I Reporting Executive Compensation and First-Tier Subcontract Awards 2008-039 II Payments Under Time-and- Materials and Labor-Hour Contracts 2011-003 III Extension of Sunset Date for Protests of Task and Delivery Orders 2012-007 IV DARPA-New Mexico Tax Agreement 2012-019 V Clarification of Standards for Computer Generation of Forms 2011-022 VI Technical Amendments Item I Reporting Executive Compensation and First-Tier Subcontract Awards (FAR Case

32

OMB Circular A-123, Appendix B  

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

T H E D I R E C T O R January 15, 2009 CIRCULAR NO. A-123, Appendix B Revised TO THE HEADS OF EXECUTIVE DEPARTMENTS AND ESTABLISHMENTS SUBJECT: Improving the Management of Government Charge Card Programs Appendix B of OMB Circular A-123 prescribes policies and procedures to agencies regarding how to maintain internal controls that reduce the risk of fraud, waste, and error in government charge card programs. This revision responds to recommendations made by the Government Accountability Office (GAO) regarding the Federal purchase card program as well as agency comments and suggestions made by Agency/Organization Program Coordinators. These revisions replace and rescind all previously issued OMB Circular A-123 Appendix B policy dated February 2006 and August 2005. Significant updates to Appendix B are as follows:

33

Federal Acquisition Circular 2005-36  

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

Federal Acquisition Circular 2005-36 Federal Acquisition Circular 2005-36 Item Subject FAR case I.............. Federal Technical Data Solution (FedTeDS) 2008-038 II............. Fair Labor Standards Act and Service Contract 2007-021 Act Price Adjustment Clauses. III............ New Designated Country-Taiwan 2009-014 IV............. Prohibition on Restricted Business Operations 2008-004 in Sudan and Imports from Burma. V.............. List of Approved Attorneys, Abstractors, and 2006-013 Title Companies. VI............. Cost Accounting Standards (CAS) 2007-002 Administration and Associated Federal Acquisition Regulation Clauses. VII............ Technical Amendments

34

SUBCRITICAL INSTABILITIES IN PLANE COUETTE FLOW OF VISCO-ELASTIC FLUIDS  

E-Print Network [OSTI]

SUBCRITICAL INSTABILITIES IN PLANE COUETTE FLOW OF VISCO-ELASTIC FLUIDS Alexander N. Morozov of an eigenfunction of the linearized equations of motion becomes subcritically unstable, and the threshold value, subcritical instabilities, amplitude equation Introduction In the last decades, stability of flows of polymers

van Saarloos, Wim

35

Numerical simulations of heat transfer in plane channel flow Najla EL GHARBI 1, 3, a  

E-Print Network [OSTI]

Numerical simulations of heat transfer in plane channel flow Najla EL GHARBI 1, 3, a , Rafik ABSI 2 abenzaoui@gmail.com Keywords: turbulent flows, heat transfer, forced convection, low Reynolds number model data for Re = 150. Introduction Turbulent flow with heat transfer mechanism is of great importance from

Paris-Sud XI, Université de

36

On the properties of Circular-Beams  

E-Print Network [OSTI]

Circular-Beams were introduced as a very general solution of the paraxial wave equation carrying Orbital Angular Momentum. Here we study their properties, by looking at their normalization and their expansion in terms of Laguerre-Gauss modes. We also study their far-field divergence and, for particular cases of the beam parameters, their possible experimental generation.

Giuseppe Vallone

2015-01-28T23:59:59.000Z

37

In-plane pitch control of cholesteric liquid crystals by formation of artificial domains via patterned photopolymerization  

Science Journals Connector (OSTI)

A controlled helix pitch modulation in the in-plane direction of a planarly aligned cholesteric liquid crystal cell is demonstrated by using photopolymerizable cholesteric liquid...

Yoshida, Hiroyuki; Miura, Yusuke; Tokuoka, Kazuki; Suzuki, Satoshi; Fujii, Akihiko; Ozaki, Masanori

2008-01-01T23:59:59.000Z

38

Bright-to-dark exciton transition in symmetric coupled quantum wells induced by an in-plane magnetic field  

Science Journals Connector (OSTI)

The energy dispersion of an exciton in a coupled quantum well is modified by an external in-plane magnetic field. We find that the in-plane magnetic field can shift the ground state of the magnetoexciton from a zero in-plane center-of-mass (CM) momentum to a finite CM momentum, and render the ground state of the magnetoexciton stable against radiative recombination due to momentum conservation. At the same time, a spatial separation of the electron and hole is realized. Thus an in-plane magnetic field can be used to tailor the radiative properties of excitons in coupled quantum wells.

Kai Chang and F. M. Peeters

2001-03-28T23:59:59.000Z

39

Policy Flash 2014-38 Federal Acquisition Circular (FAC) 2005...  

Energy Savers [EERE]

4-38 Federal Acquisition Circular (FAC) 2005-76 Policy Flash 2014-38 Federal Acquisition Circular (FAC) 2005-76 Questions concerning this policy flash should be directed to Jason...

40

POLICY FLASH 2014-31 Federal Acquisition Circulars (FACs) 2005...  

Energy Savers [EERE]

POLICY FLASH 2014-31 Federal Acquisition Circulars (FACs) 2005-73 and 2005-74 POLICY FLASH 2014-31 Federal Acquisition Circulars (FACs) 2005-73 and 2005-74 Questions concerning...

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


41

Policy Flash 2014-11 Federal Acquisition Circular (FAC) 2005...  

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

1 Federal Acquisition Circular (FAC) 2005-71 Policy Flash 2014-11 Federal Acquisition Circular (FAC) 2005-71 Questions concerning this policy flash should be directed to Barbara...

42

NOAA Technical Report NMFS Circular 450 The Utility of Developmental  

E-Print Network [OSTI]

#12;450 NOAA Technical Report NMFS Circular 450 The Utility of Developmental Osteology in Taxonomic Report NMFS Circular 450 The Utility of Developmental Osteology in Taxonomic and Systematic Studies .................................................................. .... 13 Scales and lateral line pores

43

Lines of Circular Polarization in Electromagnetic Wave Fields  

Science Journals Connector (OSTI)

8 October 1983 research-article Lines of Circular Polarization in Electromagnetic Wave Fields J...free space possesses, in general, two families of singular lines ( lines) on which the transverse field is circularly polarized. The...

1983-01-01T23:59:59.000Z

44

CRAD, Configuration Management - Oak Ridge National Laboratory...  

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

Configuration Management - Oak Ridge National Laboratory High Flux Isotope Reactor CRAD, Configuration Management - Oak Ridge National Laboratory High Flux Isotope Reactor February...

45

CRAD, Configuration Management - Oak Ridge National Laboratory...  

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

Configuration Management - Oak Ridge National Laboratory High Flux Isotope Reactor Contractor ORR CRAD, Configuration Management - Oak Ridge National Laboratory High Flux Isotope...

46

Circular zig-zag scan video format  

DOE Patents [OSTI]

A circular, ziz-zag scan for use with vidicon tubes. A sine wave is generated, rectified and its fourth root extracted. The fourth root, and its inverse, are used to generate horizontal ramp and sync signals. The fourth root is also used to generate a vertical sync signal, and the vertical sync signal, along with the horizontal sync signal, are used to generate the vertical ramp signal. Cathode blanking and preamplifier clamp signals are also obtained from the vertical sync signal.

Peterson, C. Glen (Los Alamos, NM); Simmons, Charles M. (Los Alamos, NM)

1992-01-01T23:59:59.000Z

47

Pump-probe measurements of the thermal conductivity tensor for materials lacking in-plane symmetry  

SciTech Connect (OSTI)

We previously demonstrated an extension of time-domain thermoreflectance (TDTR) which utilizes offset pump and probe laser locations to measure in-plane thermal transport properties of multilayers. However, the technique was limited to systems of transversely isotropic materials studied using axisymmetric laser intensities. Here, we extend the mathematics so that data reduction can be performed on non-transversely isotropic systems. An analytic solution of the diffusion equation for an N-layer system is given, where each layer has a homogenous but otherwise arbitrary thermal conductivity tensor and the illuminating spots have arbitrary intensity profiles. As a demonstration, we use both TDTR and time-resolved magneto-optic Kerr effect measurements to obtain thermal conductivity tensor elements of <110> ?-SiO{sub 2}. We show that the out-of-phase beam offset sweep has full-width half-maxima that contains nearly independent sensitivity to the in-plane thermal conductivity corresponding to the scanning direction. Also, we demonstrate a Nb-V alloy as a low thermal conductivity TDTR transducer layer that helps improve the accuracy of in-plane measurements.

Feser, Joseph P. [Department of Mechanical Engineering, University of Delaware, Newark, Delaware 19716 (United States); Liu, Jun; Cahill, David G. [Department of Materials Science and Engineering, and Frederick-Seitz Materials Research Laboratory, University of Illinois, Urbana, Illinois 61801 (United States)

2014-10-15T23:59:59.000Z

48

Determining the Mechanisms of Cationic Contamination Affecting PEMFCs Using a Strip Cell Configuration  

SciTech Connect (OSTI)

Cationic contamination of polymer electrolyte fuel cells has been shown to cause serious performance degradation but the exact mechanisms of this degradation are not fully understood. A strip cell configuration was devised to study the mechanisms of performance degradation due to cationic contamination by changing the time and length scales of traditional fuel cells while providing a suitable reference electrode. This 'strip cell' configuration utilizes traditional Nafion{reg_sign} membranes in an in-plane configuration with electrodes painted on each end. Using this cell it was determined that cationic contaminants collect near the cathode of the fuel cell under load and that this profile leads to increased losses primarily in the cathode region. These results can be directly related to performance losses in a typical PEMFC contaminated by foreign cations.

Kienitz, B. L.; Zawodzinski, T. A.; Pivovar, B. S.; Garzon, F. H.

2008-01-01T23:59:59.000Z

49

CRAD, Configuration Management Assessment Plan  

Broader source: Energy.gov [DOE]

The objective of this assessment is to determine whether a Configuration Management Program (CM) is in place which allows for the availability and retrievability of accurate information, improves response to design and operational decisions, enhances worker safety, increases facility safety and reliability, increases efficiency of work efforts, and helps maintain integrity of interfacing orders.

50

Revised OMB Circular A-76 (Revised November 14, 2002)  

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

OMB Circular A-76 Revision Comments OMB Circular A-76 Revision Comments DRAFT OMB CIRCULAR A-76 (NOVEMBER 14, 2002) REVIEW COMMENTS AND RECOMMENDATIONS GENERAL COMMENTS: The Department of Energy (DOE) supports the overarching goal of OMB Circular A-76 that agencies should obtain "the best deal to the Taxpayer." We also support revisions to the Circular that "Keep the Process Moving" with the end result being: Faster/Cheaper Competitions; Improved Performance and Measures; Enhanced/Expanded Competition; Fairness; Realizing Significant Savings; and the Redirection of Resources to Mission Critical Requirements. Upon review of the draft Circular, the Department believes the proposed changes to Circular reflect a general improvement over the current version. The Department does, however, have

51

Snowflake Divertor Configuration in NSTX  

SciTech Connect (OSTI)

Steady-state handling of divertor heat flux is a critical issue for present and future conventional and spherical tokamaks with compact high power density divertors. A novel 'snowflake' divertor (SFD) configuration that takes advantage of magnetic properties of a second-order poloidal null has been predicted to have a larger plasma-wetted area and a larger divertor volume, in comparison with a standard first-order poloidal X-point divertor configuration. The SFD was obtained in 0.8 MA, 4-6 MW NBI-heated H-mode discharges in NSTX using two divertor magnetic coils. The SFD led to a partial detachment of the outer strike point even in low-collisionality scrape-off layer plasma obtained with lithium coatings in NSTX. Significant divertor peak heat flux reduction and impurity screening have been achieved simultaneously with good core confinement and MHD properties.

Soukhanovskii, V. A. [Lawrence Livermore National Laboratory (LLNL); Ahn, Joonwook [ORNL; Bell, R. E. [Princeton Plasma Physics Laboratory (PPPL); Gates, D.A. [Princeton Plasma Physics Laboratory (PPPL); Gerhardt, S. [Princeton Plasma Physics Laboratory (PPPL); Kaita, R. [Princeton Plasma Physics Laboratory (PPPL); Kolemen, E.. [Princeton Plasma Physics Laboratory (PPPL); Kugel, H. W. [Princeton Plasma Physics Laboratory (PPPL); LeBlanc, B [Princeton Plasma Physics Laboratory (PPPL); Maingi, Rajesh [ORNL; Maqueda, R. J. [Nova Photonics, Princeton, NJ; McLean, Adam G [ORNL; Menard, J. E. [Princeton Plasma Physics Laboratory (PPPL); Mueller, D. [Princeton Plasma Physics Laboratory (PPPL); Paul, S. F. [Princeton Plasma Physics Laboratory (PPPL); Raman, R [University of Washington, Seattle; Roquemore, L. [Princeton Plasma Physics Laboratory (PPPL); Ryutov, D. D. [Lawrence Livermore National Laboratory (LLNL); Scott, H A [Lawrence Livermore National Laboratory (LLNL)

2011-01-01T23:59:59.000Z

52

From spatially indirect excitons to momentum-space indirect excitons by an in-plane magnetic field  

Science Journals Connector (OSTI)

An in-plane magnetic field is found to change drastically the photoluminescence spectra and kinetics of interwell excitons in GaAs/AlxGa1-xAs coupled quantum wells. This effect is due to the in-plane magnetic-field-induced displacement of the interwell exciton dispersion in momentum space, which results in the transition from the momentum-space direct exciton ground state to the momentum-space indirect exciton ground state. An in-plane magnetic field is, therefore, an effective tool for exciton dispersion engineering.

L. V. Butov, A. V. Mintsev, Yu. E. Lozovik, K. L. Campman, and A. C. Gossard

2000-07-15T23:59:59.000Z

53

Circular zig-zag scan video format  

DOE Patents [OSTI]

A circular, ziz-zag scan for use with vidicon tubes is disclosed. A sine wave is generated, rectified and its fourth root extracted. The fourth root, and its inverse, are used to generate horizontal ramp and sync signals. The fourth root is also used to generate a vertical sync signal, and the vertical sync signal, along with the horizontal sync signal, are used to generate the vertical ramp signal. Cathode blanking and preamplifier clamp signals are also obtained from the vertical sync signal. 10 figs.

Peterson, C.G.; Simmons, C.M.

1992-06-09T23:59:59.000Z

54

A Family of Circular Bargmann Transforms  

E-Print Network [OSTI]

When considering a charged particle evolving in the Poincar\\'e disk under influence of a uniform magnetic field with a strength proportional to +1, we construct for all hyperbolic Landau level \\epsilon^\\gamma_$m$ m = 4m(-m), m 2 Z+ \\[0, /2] a family of coherent states transforms labeled by (,m) and mapping isometrically square integrable functions on the unit circle with respect to the measure sin^\\gamma-2m (\\theta/2) d\\theta onto spaces of bound states of the particle. These transforms are called circular Bargmann transforms.

Zouhair Mouayn

2011-05-24T23:59:59.000Z

55

On the motion of spinning test particles in plane gravitational waves  

E-Print Network [OSTI]

The Mathisson-Papapetrou-Dixon equations for a massive spinning test particle in plane gravitational waves are analysed and explicit solutions constructed in terms of solutions of certain linear ordinary differential equations. For harmonic waves this system reduces to a single equation of Mathieu-Hill type. In this case spinning particles may exhibit parametric excitation by gravitational fields. For a spinning test particle scattered by a gravitational wave pulse, the final energy-momentum of the particle may be related to the width, height, polarisation of the wave and spin orientation of the particle.

M Mohseni; Robin W Tucker; Charles Wang

2003-08-14T23:59:59.000Z

56

SEARCH FOR A MAGNETIC FIELD VIA CIRCULAR POLARIZATION IN THE WOLF-RAYET STAR EZ CMa  

SciTech Connect (OSTI)

We report on the first deep, direct search for a magnetic field via the circular polarization of Zeeman splitting in a Wolf-Rayet (W-R) star. Using the highly efficient ESPaDOnS spectropolarimeter at the Canada-France-Hawaii Telescope, we observed at three different epochs one of the best W-R candidates in the sky expected to harbor a magnetic field, the bright, highly variable WN4 star EZ CMa = WR6 = HD 50896. We looked for the characteristic circular polarization (Stokes V) pattern in strong emission lines that would arise as a consequence of a global, rotating magnetic field with a split monopole configuration. We also obtained nearly simultaneous linear polarization spectra (Stokes Q and U), which are dominated by electron scattering, most likely from a flattened wind with large-scale corotating structures. As the star rotates with a period of 3.766 days, our view of the wind changes, which in turn affects the value of the linear polarization in lines versus continuum at the {approx}0.2% level. Depending on the epoch of observation, our Stokes V data were affected by significant crosstalk from Stokes Q and U to V. We removed this spurious signal from the circular polarization data and experimented with various levels of spectral binning to increase the signal-to-noise ratio of our data. In the end, no magnetic field is unambiguously detected in EZ CMa. Assuming that the star is intrinsically magnetic and harbors a split monopole configuration, we find an upper limit of B {approx} 100 G for the intensity of its field in the line-forming regions of the stellar wind.

De la Chevrotiere, A.; St-Louis, N.; Moffat, A. F. J. [Departement de Physique, Universite de Montreal and Centre de Recherche en Astrophysique du Quebec (CRAQ), C. P. 6128, succ. centre-ville, Montreal (Quebec) H3C 3J7 (Canada)] [Departement de Physique, Universite de Montreal and Centre de Recherche en Astrophysique du Quebec (CRAQ), C. P. 6128, succ. centre-ville, Montreal (Quebec) H3C 3J7 (Canada); Collaboration: MiMeS Collaboration

2013-02-20T23:59:59.000Z

57

Precision in-plane hand assembly of bulk microfabricated components for high-voltage MEMS arrays applications  

E-Print Network [OSTI]

This paper reports the design and experimental validation of an in-plane assembly method for centimeter-scale bulk-microfabricated components. The method uses mesoscaled deep-reactive-ion-etching (DRIE)-patterned cantilevers ...

Akinwande, Akintunde Ibitayo

58

Electronic structure of diluted magnetic semiconductor superlattices: In-plane magnetic field effect  

Science Journals Connector (OSTI)

The electronic structure of diluted magnetic semiconductor (DMS) superlattices under an in-plane magnetic field is studied within the framework of the effective-mass theory; the strain effect is also included in the calculation. The numerical results show that an increase of the in-plane magnetic field renders the DMS superlattice from the direct band-gap system to the indirect band-gap system, and spatially separates the electron and the hole by changing the type-I band alignment to a type-II band alignment. The optical transition probability changes from type I to type II and back to type I like at large magnetic field. This phenomenon arises from the interplay among the superlattice potential profile, the external magnetic field, and the sp-d exchange interaction between the carriers and the magnetic ions. The shear strain induces a strong coupling of the light- and heavy-hole states and a transition of the hole ground states from light-hole to heavy-hole-like states.

Hai-Bin Wu, Kai Chang, and Jian-Bai Xia

2002-04-22T23:59:59.000Z

59

The Effect of Circularly Polarized Light on the Photosynthesis and ...  

Science Journals Connector (OSTI)

The net photosynthesis and chlorophyll a synthesis of certain marine algae show a gra- dation in response to various types of polarized light. Right circularly.

1999-12-14T23:59:59.000Z

60

FED pumped limiter configuration issues  

SciTech Connect (OSTI)

Impurity control in the Fusion Engineering Device (FED) is provided by a toroidal belt pumped limiter. Limiter design issues addressed in this paper are (1) poloidal location of the limiter belt, (2) shape of the limiter surface facing the plasma, and (3) whether the belt is pumped from one or both sides. The criteria used for evaluation of limiter configuration features were sensitivity to plasma-edge conditions and ease of maintenance and fabrication. The evaluation resulted in the selection of a baseline FED limiter that is located at the bottom of the device and has a flat surface with a single leading edge.

Haines, J.R.; Fuller, G.M.

1983-01-01T23:59:59.000Z

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


61

Federal Acquisition Regulation; Federal Acquisition Circular  

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

2005-37; Introduction Federal Acquisition Circular (FAC) 2005-37 List of Rules in FAC 2005-37 Item Subject I. Registry of Disaster Response Contractors II. Limiting Length of Noncompetitive Contracts in "Unusual and Compelling Urgency" Circumstances III. GAO Access to Contractor Employees IV. Use of Commercial Services Item Authority V. Limitations on Pass-Through Charges VI. Award Fee Language Revision VII. National Response Framework VIII. Technical Amendments SUPPLEMENTARY INFORMATION: Summaries for each FAR rule follow. Item I-Registry of Disaster Response Contractors (FAR Case 2008-035) This interim rule amends the FAR at parts 2, 4, 7, 10, 13, 18, 26, and 52 to implement the Registry of Disaster Response Contractors provision, section 697 of the Department of

62

Federal Acquisition Circular WAC) 2001-24  

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

FLASH 2004-20 July 12, 2004 Federal Acquisition Circular WAC) 2001-24 1. Incentives for Use of Performance-Based Contracting for Services (Interim) (FAR Case 2004-004) Effective Date: June 18, 2004 What is the purpose of this FAR Case? This interim rule amends the FAR providing authority to treat perfonnance-based contract or task orders for services as commercial items if specific conditions are met. It also requires agencies to report on perfonnance-based contracts or task orders awarded using this authority. This rulemaking affects FAR Parts 2, Definitions, 12, Acquisition of Commercial Items, 37, Service Contracting, and 52, Solicitation Provisions and Contract Clauses. ~ Provides that performance-based contracts and task orders for services with an estimated value not to exceed $25,000,000, be treated as

63

Federal Acquisition Regulation; Federal Acquisition Circular  

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

0 0 Federal Acquisition Circular (FAC) 2005-40 Federal Register /Vol. 75, No. 55 /Tuesday, March 23, 2010 /page 14059 A summary for the FAR rule follows. Federal Awardee Performance and Integrity Information System (FAPIIS) (FAR case 2008-027) Effective Date: April 22, 2010. This final rule amends the FAR to implement section 872 of the Duncan Hunter National Defense Authorization Act for Fiscal Year 2009. Section 872 requires the establishment of a data system, Federal Awardee Performance and Integrity Information System (FAPIIS), containing specific information on the integrity and performance of covered Federal agency contractors and grantees. FAPIIS is available for use in award decisions at www.ppirs.gov. Government input to FAPIIS is accomplished at www.cpars.csd.disa.mil.

64

VLA HYBRID CONFIGURATIONS A Critical Look  

E-Print Network [OSTI]

VLA HYBRID CONFIGURATIONS A Critical Look Barry Clark EVLA Memo 180 July 2014 The VLA hybrid weeks (plus the two week hybrid), whereas going directly from one main configuration to another could 4.5%. 2. The time requests in the hybrid configuration are heavily weighted to the galactic center

Groppi, Christopher

65

Simplified expansions for radiation from a baffled circular piston  

E-Print Network [OSTI]

Simplified expansions for radiation from a baffled circular piston T. Douglas Mast Department from a baffled circular piston continues be an active area of investigation, both as a canonical computations of piston fields in lossless and attenuative fluid media. For the region r a, where

Mast, T. Douglas

66

Circularization of Tidally Disrupted Stars around Spinning Supermassive Black Holes  

E-Print Network [OSTI]

We study the circularization of tidally disrupted stars on bound orbits around spinning supermassive black holes by performing three-dimensional smoothed particle hydrodynamic simulations with Post-Newtonian corrections. Our simulations reveal that debris circularization depends sensitively on the efficiency of radiative cooling. There are two stages in debris circularization if radiative cooling is inefficient: first, the stellar debris streams self-intersect due to relativistic apsidal precession; shocks at the intersection points thermalize orbital energy and the debris forms a geometrically thick, ring-like structure around the black hole. The ring rapidly spreads via viscous diffusion, leading to the formation of a geometrically thick accretion disk. In contrast, if radiative cooling is efficient, the stellar debris circularizes due to self-intersection shocks and forms a geometrically thin ring-like structure. In this case, the dissipated energy can be emitted during debris circularization as a precurso...

Hayasaki, Kimitake; Loeb, Abraham

2015-01-01T23:59:59.000Z

67

DOCS System Configuration Management Plan | Department of Energy  

Energy Savers [EERE]

DOCS System Configuration Management Plan DOCS System Configuration Management Plan The DOCS Systems Configuration Management Plan (SCMP), from an actual DOE systems engineering...

68

Definition: Electrical Profiling Configurations | Open Energy Information  

Open Energy Info (EERE)

Profiling Configurations Profiling Configurations Jump to: navigation, search Dictionary.png Electrical Profiling Configurations Electrical profiling is a DC resistivity survey which aims to trace lateral variations in the apparent resistivity structure of the subsurface. Traditionally, electrical profiling provides qualitative information of relative apparent resistivity values in order to detect anomalous geological features.[1] Also Known As Electrical mapping References ↑ http://www.amazon.com/Principles-Electric-Borehole-Geophysics-Geochemistry/dp/0444529942 Ret LikeLike UnlikeLike You like this.Sign Up to see what your friends like. rieved from "http://en.openei.org/w/index.php?title=Definition:Electrical_Profiling_Configurations&oldid=596184" Category: Definitions

69

A proposed measurement of the reverse Cherenkov radiation effect in a metamaterial-loaded circular waveguide  

SciTech Connect (OSTI)

The authors have recently proposed an experiment on verification of the Reverse Cherenkov Radiation (RCR) effect in a Left-Handed-Material-loaded waveguide. Applications of the RCR effect may range from novel higher-order-mode suppressors in microwave and millimeter-wave sources to improved particle detectors for satellite non-proliferation missions. The experimental configuration includes a circular waveguide filled with an artificial metamaterial with simultaneously negative permittivity and permeability, in which the electromagnetic wave with a frequency of 95 GHz will interact with an electron beam. They have demonstrated that for certain values of effective permittivity and permeability only the backward-propagating mode can be exited by the electron beam. At the conference they will present some newly developed metamaterial designs, which they plan to employ for producing the proper effective medium parameters for this experiment.

Shchegolkov, Dmitry [Los Alamos National Laboratory; Azad, Abul K [Los Alamos National Laboratory; O' Hara, John F [Los Alamos National Laboratory; Smirnova, Evgenya I [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

70

IAEA Information Circular 225 Revision 5: Fact Sheet | National Nuclear  

National Nuclear Security Administration (NNSA)

IAEA Information Circular 225 Revision 5: Fact Sheet | National Nuclear IAEA Information Circular 225 Revision 5: Fact Sheet | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Home > Media Room > Fact Sheets > IAEA Information Circular 225 Revision 5: Fact Sheet Fact Sheet IAEA Information Circular 225 Revision 5: Fact Sheet Mar 23, 2012 The Department of Energy's National Nuclear Security Administration

71

Technical Standards, OMB Circular A-119 - May 14, 1998 | Department...  

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

in order to make the terminology of the Circular consistent with the National Technology Transfer and Advancement Act of 1995, to issue guidance to the agencies on making their...

72

Scour around a circular pile due to oscillatory wave motion  

E-Print Network [OSTI]

SCOUR AROUND A CIRCULAR PILE DUE TO OSCILLATORY WAVE MOTION A Thesis by DONALD RAYMOND WELLS Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE January... 1970 Major Subject: Civil Engineering SCOUR AROUND A CIRCULAR PILE DUE TO OSCILLATORY WAVE MOTION A Thesis by DONALD RAYMOND WELLS Approved as to style and content by: hairman of Committee) (Head of Department) ember) . (Member) (Member...

Wells, Donald Raymond

2012-06-07T23:59:59.000Z

73

Electronic Circular Dichroism of Proteins from First-Principles Calculations  

Science Journals Connector (OSTI)

Electronic Circular Dichroism of Proteins from First-Principles Calculations ... The circular dichroism (CD) spectra of 47 proteins in the far-ultraviolet have been calculated from first principles, using a parameter set derived from ab initio calculations on N-methylacetamide. ... An important aspect of calculating protein CD spectra is the accurate parametrization of the ground and excited electronic states of the amide chromophore. ...

Jonathan D. Hirst; Karl Colella; Andrew T. B. Gilbert

2003-09-30T23:59:59.000Z

74

Magneto-electric coupling in a two-dimensional ballistic Josephson junction with in-plane magnetic texture  

E-Print Network [OSTI]

Magneto-electric coupling in a two-dimensional ballistic Josephson junction with in-plane magnetic, Germany (Dated: August 20, 2014) We study a Josephson junction made with a spin-textured bridge, when both-dimensional ballistic Josephson junction close to the critical temperature of the heterostructure, when an anomalous

Boyer, Edmond

75

Ontological Configuration Management for Wireless Mesh Routers  

E-Print Network [OSTI]

the CIM model and OWL ontology language and implementing XSLT transformations from the originalOntological Configuration Management for Wireless Mesh Routers Iv´an D´iaz , Cristian Popi configuration format to CIM/OWL and back. We thus represent it in a higher level of abstraction, an on

Paris-Sud XI, Université de

76

Configurations for short period rf undulators  

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

Several configurations for rf undulators energized at millimeter wavelengths and designed to produce coherent nanometer radiation from sub-GeV electron beams are analyzed and compared with one another. These configurations include a traveling-wave resonant ring, a standing wave resonator, and a resonator operating close to cutoff.

Kuzikov, S. V.; Jiang, Y.; Marshall, T. C.; Sotnikov, G. V.; Hirshfield, J. L.

2013-07-01T23:59:59.000Z

77

Toroidal configurations of perfect fluid in the Reissner-Nordstrm-(anti-)de Sitter spacetimes  

SciTech Connect (OSTI)

Influence of cosmological constant on toroidal fluid configurations around charged spherically symmetric black holes and naked singularities is demostrated by study of perfect-fluid tori with uniform distribution of specific angular momentum orbiting in the Reissner-Nordstrm-(anti-)de Sitter spacetimes. Toroidal configurations are allowed only in the spacetimes admitting existence of stable circular geodesics. Configurations with marginally closed equipotential (equipressure) surfaces crossing itself in a cusp allow accretion (through the inner cusp) and/or excretion (through the outer cusp) of matter from the toroidal configuration. Detailed classification of the Reissner-Nordstrm-(anti-)de Sitter spacetimes according to properties of the marginally stable tori is given. It is demonstrated that in the Reissner-Nordstrm-de Sitter naked-singularity spacetimes an interesting phenomenon of doubled tori can exist enabling exchange of matter between two tori in both inward and outward directions. In naked-singularity spacetimes the accretion onto the central singularity is impossible due to existence of a potential barrier.

Kuckov, Hana; Slan, Petr; Stuchlk, Zden?k, E-mail: hana.kucakova@centrum.cz, E-mail: petr.slany@fpf.slu.cz, E-mail: zdenek.stuchlik@fpf.slu.cz [Institute of Physics, Faculty of Philosophy and Science, Silesian university in Opava, Bezrucovo nm. 13, Opava, CZ-746 01 (Czech Republic)

2011-01-01T23:59:59.000Z

78

Vertical Electrical Sounding Configurations | Open Energy Information  

Open Energy Info (EERE)

Vertical Electrical Sounding Configurations Vertical Electrical Sounding Configurations Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Vertical Electrical Sounding Configurations Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Geophysical Techniques Exploration Sub Group: Electrical Techniques Parent Exploration Technique: Direct-Current Resistivity Survey Information Provided by Technique Lithology: Rock composition, mineral and clay content Stratigraphic/Structural: Detection of permeable pathways, fracture zones, faults Hydrological: Resistivity influenced by porosity, grain size distribution, permeability, fluid saturation, fluid type and phase state of the pore water Thermal: Resistivity influenced by temperature

79

Electrical Profiling Configurations | Open Energy Information  

Open Energy Info (EERE)

Electrical Profiling Configurations Electrical Profiling Configurations Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Electrical Profiling Configurations Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Geophysical Techniques Exploration Sub Group: Electrical Techniques Parent Exploration Technique: Direct-Current Resistivity Survey Information Provided by Technique Lithology: Rock composition, mineral and clay content Stratigraphic/Structural: Detection of permeable pathways, fracture zones, faults Hydrological: Resistivity influenced by porosity, grain size distribution, permeability, fluid saturation, fluid type and phase state of the pore water Thermal: Resistivity influenced by temperature

80

Software Configuration Management (SCM) A Practical Guide | Department of  

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

Software Configuration Management (SCM) A Practical Guide Software Configuration Management (SCM) A Practical Guide Software Configuration Management (SCM) A Practical Guide This document provides a practical guide for integrating software configuration management disciplines into the management of software engineering projects. Software configuration management is the process of identifying and defining the software configuration items in a system, controlling the release and change of these items throughout the system lifecycle, recording and reporting the status of configuration items and change requests, and verifying the completeness and correctness of configuration items Software Configuration Management (SCM) A Practical Guide More Documents & Publications NMMSS Software Quality Assurance Plan SOFTWARE QUALITY & SYSTEMS ENGINEERING PROGRAM: Software Configuration

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


81

Property:Mooring Configuration | Open Energy Information  

Open Energy Info (EERE)

Mooring Configuration Mooring Configuration Jump to: navigation, search Property Name Mooring Configuration Property Type Text Pages using the property "Mooring Configuration" Showing 25 pages using this property. (previous 25) (next 25) M MHK Technologies/Aegir Dynamo + Gravity base with tension leg platform MHK Technologies/AirWEC + Single point slack moored MHK Technologies/Aquantis + Proprietary MHK Technologies/Atlantis AN 150 + mono pylon MHK Technologies/Atlantis AR 1000 + Site specific design mono pylon or gravity base structure The AR 1000 deployed at EMEC makes use of a GBS foundation MHK Technologies/Atlantis AS 400 + N A MHK Technologies/C Plane + Tethered MHK Technologies/CETO Wave Energy Technology + Anchored MHK Technologies/Centipod + Proprietary MHK Technologies/Current Electric Generator + The anchors for the Current Electric Generator will be made from concrete and will be a gravity base

82

Definition: Vertical Electrical Sounding Configurations | Open Energy  

Open Energy Info (EERE)

Sounding Configurations Sounding Configurations Jump to: navigation, search Dictionary.png Vertical Electrical Sounding Configurations A vertical electrical sounding (VES) is a DC resistivity survey which provides information regarding the change in apparent resistivity with depth. A quantitative interpretation of the results from VES measurements enable determination of the parameters for the geoelectric section.[1] Also Known As VES; Schlumberger Sounding References ↑ http://www.nga.com/Flyers_PDF/NGA_DC_Resistivity.pdf http://www.amazon.com/Principles-Electric-Borehole-Geophysics-Geochemistry/dp/0444529942 Ret LikeLike UnlikeLike You like this.Sign Up to see what your friends like. rieved from "http://en.openei.org/w/index.php?title=Definition:Vertical_Electrical_Sounding_Configurations&oldid=596183

83

Regulatory software configuration management system design  

Science Journals Connector (OSTI)

The gap between nuclear safety-related regulations and the commercial software configuration management causes software quality concerns for Digital Control and Information System (DCIS) of a nuclear power plant. The main reason is that the DCIS of a ...

I-Hsin Chou; Chin-Feng Fan

2006-09-01T23:59:59.000Z

84

Formation of a Spheromak Plasma Configuration  

Science Journals Connector (OSTI)

A compact, toroidal configuration of magnetized plasma is produced by a combination of Z- and ?-pinch discharges. A paramagnetic toroidal field is produced by currents circulating in the plasma on closed flux surfaces.

G. C. Goldenbaum; J. H. Irby; Y. P. Chong; G. W. Hart

1980-02-11T23:59:59.000Z

85

Luminescence of coupled quantum wells:?Effects of indirect excitons in high in-plane magnetic fields  

Science Journals Connector (OSTI)

Luminescence measurements of a Ga1?xAlxAs?GaAs double quantum well in in-plane magnetic fields up to 22T are reported. The properties of spatially direct and indirect excitons are studied. We show that the strong indirect exciton luminescence survives in samples with low nonradiative recombination up to high in-plane magnetic fields. This contrasts with previously published results, where its strong suppression, observed for magnetic fields as low as of 10T, was explained by the exciton center-of-mass momentum conservation. We attribute the discrepancy to a relatively low nonradiative recombination in the studied sample in comparison with the radiative recombination of localized indirect excitons.

M. Orlita, R. Grill, M. Zvra, G. H. Dhler, S. Malzer, M. Byszewski, and J. Soubusta

2004-08-20T23:59:59.000Z

86

Cognitive abilities as influenced by family configuration  

E-Print Network [OSTI]

COGNITIVE ABILITIES AS INFLUENCED BY FAMILY CONFIGURATION A Thesis by Jani ce Leanne Pate Submitted to the Graduate College of Texas ASM University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE August 1979... Major Subject; Psychology COGNITIVE ABILITIES AS INFLUENCED BY FAMILY CONFIGURATION A Thesis by Jani ce Leanne Pate Approved as to style and content by: Chairman of Committee ( y' ~ ' l~ ~ J Hember / Nember (Head of Department) August 1979...

Pate, Janice Leanne

2012-06-07T23:59:59.000Z

87

Evaluation of heliostat field/receiver configurations  

SciTech Connect (OSTI)

This report evaluates and compares north heliostat field/cavity receiver configurations and surround heliostat field/external receiver configurations. The receiver coolants are molten nitrate salts and liquid sodium. Both field/receiver configurations use molten salt thermal storage; the sodium receiver is thermally connected to thermal storage by a sodium-to-salt heat exchanger. The heliostat filed size is fixed at 1,000,000 square meters of reflective area, and the delivered molten salt temperature is fixed at 566/sup 0/C. The delivered thermal power varies from 500 to 600 MW/sub t/, depending on the overall system efficiency. The generic north heliostat field/cavity receiver configurations were found to be 6 to 10 percent efficient than a generic surround field/external receiver configuration. There was little or no difference found in the transient performance of a molten salt receiver compared to a sodium receiver connected to a sodium-to-salt heat exchanger. Four configurations were of particular interest: (1) a north heliostat field/single cavity molten salt receiver, (2) a surround heliostat field/external cylinder molten salt receiver, (3) a surround heliostat field/external cylinder liquid sodium receiver, and (4) a north heliostat field/single cavity liquid sodium receiver. It was found that the surround field/liquid sodium external receiver configuration may provide energy at a 14 percent lower levelized energy cost than a north field/molten salt cavity receiver configuration. However, the cost advantage of the surround field/liquid sodium external receiver is not conclusive because of uncertainties in system component costs.

Faas, S.E.; Winters, W.S.

1986-03-01T23:59:59.000Z

88

Equal distribution of satellite constellations on circular target orbits  

Science Journals Connector (OSTI)

Abstract This paper addresses the problem of equal distribution of satellite constellations on circular target orbits. The control goal is to make the constellation converge to a circular target orbit, while spatially distributing the satellites at equal inter-satellite distances. The solution is defined in the port-Hamiltonian framework, which gives a clear physical interpretation of the obtained control laws, insight into the energy consumption and complete stability proofs. The controller consists of two parts: the internal control system steers each individual satellite to the target orbit, the external control system equally distributes the satellite constellation. Numerical simulation results are given to illustrate the effectiveness of the approach.

Ewoud Vos; Jacquelien M.A. Scherpen; Arjan J. van der Schaft

2014-01-01T23:59:59.000Z

89

Nonlinear transverse cascade and two-dimensional magnetohydrodynamic subcritical turbulence in plane shear flows  

E-Print Network [OSTI]

We find and investigate via numerical simulations self-sustained two-dimensional turbulence in a magnetohydrodynamic flow with a maximally simple configuration: plane, noninflectional (with a constant shear of velocity) and threaded by a parallel uniform background magnetic field. This flow is spectrally stable, so the turbulence is subcritical by nature and hence it can be energetically supported just by transient growth mechanism due to shear flow nonnormality. This mechanism appears to be essentially anisotropic in spectral (wavenumber) plane and operates mainly for spatial Fourier harmonics with streamwise wavenumbers less than a ratio of flow shear to the Alfv\\'{e}n speed, $k_y < S/u_A$ (i.e., the Alfv\\'{e}n frequency is lower than the shear rate). We focused on the analysis of the character of nonlinear processes and underlying self-sustaining scheme of the turbulence, i.e., on the interplay between linear transient growth and nonlinear processes, in spectral plane. Our study, being concerned with a ...

Mamatsashvili, G R; Chagelishvili, G D; Horton, W

2014-01-01T23:59:59.000Z

90

Optimal energy-harvesting cycles for load-driven dielectric generators in plane strain  

E-Print Network [OSTI]

The performances of energy harvesting generators based on dielectric elastomers are investigated. The configuration is of a thin dielectric film coated by stretchable electrodes at both sides. The film is first stretched, then charged and subsequently, afterwards it is released, and finally the charge is harvested at a higher electric potential. The amount of energy extracted by this cycle is bounded by the electric breakdown and the ultimate stretch ratio of the film as well as by structural instabilities due to loss of tension. To identify the optimal cycle that complies with these limits we formulate a constraint optimization problem and solve it with a dedicated solver for two typical classes of elastic dielectrics. As anticipated, we find that the performance of the generator depends critically on the ultimate stretch ratio of the film. However, more surprising is our finding of a universal limit on the dielectric strength of the film beyond which the optimal cycle is independent of this parameter. Thus, we reveal that, regardless of how large the dielectric strength of the material is, there is an upper bound on the amount of harvested energy that depends only on the ultimate stretch ratio. We conclude the work with detailed calculations of the optimal cycles for two commercially available elastic dielectrics.

R. Springhetti; E. Bortot; G. deBotton; M. Gei

2014-03-13T23:59:59.000Z

91

How to project `circular' manifolds using geodesic distances?  

E-Print Network [OSTI]

How to project `circular' manifolds using geodesic distances? John Aldo Lee, Michel Verleysen,verleysen}@dice.ucl.ac.be Abstract. Recent papers have clearly shown the advantage of using the geodesic distance instead strongly crumpled manifolds have to be un- folded. Nevertheless, neither the Euclidean nor the geodesic

Verleysen, Michel

92

The First International Workshop on Synchrotron Radiation Circular Dichroism  

E-Print Network [OSTI]

The First International Workshop on Synchrotron Radiation Circular Dichroism (SRCD) Spectroscopy and biochemists and has been operational for about a year. Drs. Kunihiko Gekko (HiSOR, Japan) and Ye Tao (BSRF REPORTS SYNCHROTRON RADIATION NEWS, Vol. 15, No. 1, 2002 33 1st International Workshop on SRCD

Wallace, Bonnie Ann

93

Development of a circularly polarizing microscope with a polarizing undulator  

Science Journals Connector (OSTI)

A circularly polarizing microscope by which we intend to obtain images with CD (circular dichroism) or CIDS (circular intensity differential scattering) in order to observe the structure and distribution of biomolecules has been constructed by using a polarizing undulator as the polarizing light source. The polarizing undulator with crossed and retarded magnetic field having fifteen periods was installed in the electron storage ring NIJI?II in the Electrotechnical Laboratory. A Schwarzschild?type mirror system combined with a convex mirror was developed in order to focus the undulator radiation to a microbeam keeping the quality of polarization of the radiation from the undulator. The beam size was from 0.66 ?m (at wavelength 200 nm) to 0.96 ?m (at 400 nm). Using a scanning sample stage and a photomultiplier which was positioned in the back of the sample some images with transmitted and scattered light from fibrous DNA have been obtained. Attempts have also been made at obtaining images with CD and CIDS from the alternation between right? and left?handed circularly polarized radiation from the undulator.

Toru Yamada; Masatada Yuri; Hideo Onuki; Shozo Ishizaka

1995-01-01T23:59:59.000Z

94

PARS II Configuration Update - Trusted Publisher  

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

Configuration Update - Trusted Publisher Configuration Update - Trusted Publisher As of July 15, 2013, all reports within SSS Reports will require a new Trusted Publisher to be accepted in order for reports to present correctly and as intended. The new Trusted Publisher certificate has been issued to the US Department of Energy by Entrust Code Signing Certification Authority - L1D and is valid until 4/22/2016. Depending upon the security settings within your domain for your workstation, administrative rights may be required to accept the new Trusted Publisher. If required, please contact your local IT Helpdesk for assistance. The original Trusted Publisher certificate, Dekker Ltd., may remain within your configuration settings. Acceptance of the new Trusted Publisher in no way affects any current reporting requirements.

95

Model for Configurational Thermodynamics in Ionic Systems  

Science Journals Connector (OSTI)

We develop a formalism to model configurational thermodynamics in ionic systems with multiple anion and cation species. Because cations and anions can be partitioned into two interacting sublattices that do not exchange species, the dimensionality of configuration space is significantly reduced. The result is a model applicable to many important problems in ionic systems. Here we show that the effect of an order-disorder transition in one sublattice on the other depends on how the symmetry is changed through the transition, as well as on the strength of the interactions.

P. D. Tepesch; G. D. Garbulsky; G. Ceder

1995-03-20T23:59:59.000Z

96

Steady State Thermoelectric Field-Reversed Configurations  

Science Journals Connector (OSTI)

It is shown that the cross-field thermoelectric force of magnetized plasmas can maintain field-reversed configurations against resistive diffusion, resulting in a steady state device attractive for thermonuclear fusion. If a peaked radial temperature profile is maintained, the thermoelectric force is in the opposite direction to the usual resistive friction, thus maintaining the field configuration. The field maintenance is tantamount to dynamo action, operating even in two dimensions. We show that a steady state device can be made by simply heating the O-point: no external electric fields or particle sources are needed. The feasibility of this scheme for fusion is discussed.

A. B. Hassam; R. M. Kulsrud; R. J. Goldston; H. Ji; M. Yamada

1999-10-11T23:59:59.000Z

97

Critical configurations of planar robot arms  

E-Print Network [OSTI]

It is known that a closed polygon P is a critical point of the oriented area function if and only if P is a cyclic polygon, that is, $P$ can be inscribed in a circle. Moreover, there is a short formula for the Morse index. Going further in this direction, we extend these results to the case of open polygonal chains, or robot arms. We introduce the notion of the oriented area for an open polygonal chain, prove that critical points are exactly the cyclic configurations with antipodal endpoints and derive a formula for the Morse index of a critical configuration.

Khimshiashvili, G; Siersma, D; Zhukova, A

2012-01-01T23:59:59.000Z

98

Transition from in-plane to out-of-plane azimuthal enhancement inAu+Au collisions  

SciTech Connect (OSTI)

The incident energy at which the azimuthal distributions in semi-central heavy ion collisions change from in-plane to out-of-plane enhancement--E{sub tran} is studied as a function of mass of emitted particles, their transverse momentum and centrality for Au+Au collisions. The analysis is performed in a reference frame rotated with the sidewards flow angle ({Theta}{sub flow}) relative to the beam axis. A systematic decrease of E{sub tran} as function of mass of the reaction products, their transverse momentum and collision centrality is evidenced. The predictions of a microscopic transport model (IQMD) are compared with the experimental results.

Andronic, A.; Stoicea, G.; Petrovici, M.; Simion, V.; Crochet,P.; Alard, J.P.; Averbeck, R.; Barret, V.; Basrak, Z.; Bastid, N.; Bendarag, A.; Berek, G.; Caplar, R.; Devismes, A.; Dupieux, Dzelalija M.; Eskef, M.; Finck, Ch.; Fodor, Z.; Gobbi, A.; Grishkin, Y.; Hartmann,O.N.; Herrmann, N.; Hildenbrand, K.D.; Hong, B.; Kecskemeti, J.; Kim,Y.J.; Kirejczyk, M.; Korolija, M.; Kotte, R.; Kress, T.; Kutsche, R.; Lebedev, A.; Lee, K.S.; Leifels, Y.; Manko, V.; Merlitz, H.; Neubert, W.; Pelte, D.; Plettner, C.; Rami, F.; Resdorf, W.; de Schauenberg, B.; Schull, D.; Seres, Z.; Sikora, B.; Sim, K.S.; Siwek-Wilczynska, K.; Smolyankin, V.; Stockmeier, M.R.; Vasiliev, M.; Wagner, P.; Wisniewski,K.; Wohlfarth, D.; Yushmanov, I.; Zhilin, A.

2000-08-09T23:59:59.000Z

99

Policy Flash 2014-03 Federal Acquisition Circular 2005-70 | Department...  

Energy Savers [EERE]

3 Federal Acquisition Circular 2005-70 Policy Flash 2014-03 Federal Acquisition Circular 2005-70 Questions concerning this policy flash should be directed to Barbara Binney, of the...

100

Problem 031: Rack Configuration Problem Matthew Grum  

E-Print Network [OSTI]

Problem 031: Rack Configuration Problem Matthew Grum Dept. Computer Science, The University of York/index.html given n models, n types, n racks: nat letting MODEL be 1..n models, TY PE be 1..n types find PLUG: mset(maxsize n racks) of mset of TY PE, MODEL minimising r PLUG Price(r[2]) such that t TY

St Andrews, University of

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


101

Computational Analysis of Shrouded Wind Turbine Configurations  

E-Print Network [OSTI]

Computational Analysis of Shrouded Wind Turbine Configurations Aniket C. Aranake Vinod K. Lakshminarayan Karthik Duraisamy Computational analysis of diuser-augmented turbines is performed using high-dimensional simulations of shrouded wind turbines are performed for selected shroud geometries. The results are compared

Alonso, Juan J.

102

Quasistatic Formation of the Spheromak Plasma Configuration  

Science Journals Connector (OSTI)

A novel method for creating the spheromak configuration has been proposed and verified experimentally. The scheme is based on a transfer of poloidal and toroidal magnetic fluxes into a plasma from a "flux core." We present the first experimental verification of this quasistatic (?Alfven??form

M. Yamada; H. P. Furth; W. Hsu; A. Janos; S. Jardin; M. Okabayashi; J. Sinnis; T. H. Stix; K. Yamazaki

1981-01-19T23:59:59.000Z

103

CASING EFFECTS ON THE RADIATION PERFORMANCE OF A CIRCULARLY POLARIZED PATCH ANTENNA  

E-Print Network [OSTI]

CASING EFFECTS ON THE RADIATION PERFORMANCE OF A CIRCULARLY POLARIZED PATCH ANTENNA K. Rambabu, H on the radiation characteristics of a miniaturized patch antenna for circular polarization. Different scenarios DESIGN Using a multiple resonance technique [4] for broadband performance, a circularly polarized patch

Bornemann, Jens

104

P26W-5 eCo iPs P24W-5 eCo iPs special features In Plane Switching (IPS), 0 Watt  

E-Print Network [OSTI]

Watt in power save mode, ECO button, Auto Brightness Control (ABC), DisplayViewTM IT Suite In Plane Switching (IPS), 0 Watt in power save mode, ECO button, Auto Brightness Control (ABC), Display P22W-5 eCo iPs P19-5P eCo special features In Plane Switching (IPS), 0 Watt in power save mode, ECO

Ott, Albrecht

105

Federal Acquisition Circular 2005-52 Item Subject FAR case  

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

Circular 2005-52 Circular 2005-52 Item Subject FAR case I Sustainable Acquisition 2010-001 II Contract Closeout 2008-020 III Prohibition on Contracting with Inverted Domestic Corporations 2008-009 IV Buy American Exemption for Commercial Information Technology - Construction Material 2009-039 V Oversight of Contractor Ethics Programs 2010-017 VI Technical Amendments N/A Item I--Sustainable Acquisition (FAR Case 2010-001) (Interim) This interim rule amends the FAR to implement Executive Order 13514, Federal Leadership in Environmental, Energy, and Economic Performance, and Executive Order 13423, Strengthening Federal Environmental, Energy, and Transportation Management. It requires Federal agencies to leverage agency acquisitions to foster markets for

106

Circular polarization in the optical afterglow of GRB 121024A  

E-Print Network [OSTI]

Gamma-ray bursts (GRBs) are most probably powered by collimated relativistic outflows (jets) from accreting black holes at cosmological distances. Bright afterglows are produced when the outflow collides with the ambient medium. Afterglow polarization directly probes the magnetic properties of the jet, when measured minutes after the burst, and the geometric properties of the jet and the ambient medium when measured hours to days after the burst. High values of optical polarization detected minutes after burst in GRB 120308A indicate the presence of large-scale ordered magnetic fields originating from the central engine (the power source of the GRB). Theoretical models predict low degrees of linear polarization and negligable circular polarization at late times, when the energy in the original ejecta is quickly transferred to the ambient medium and propagates farther into the medium as a blastwave. Here we report the detection of circularly polarized optical light in the afterglow of GRB 121024A, measured 0.1...

Wiersema, K; Toma, K; van der Horst, A J; Varela, K; Min, M; Greiner, J; Starling, R L C; Tanvir, N R; Wijers, R A M J; Campana, S; Curran, P A; Fan, Y; Fynbo, J P U; Gorosabel, J; Gomboc, A; Gotz, D; Hjorth, J; Jin, Z P; Kobayashi, S; Kouveliotou, C; Mundell, C; O'Brien, P T; Pian, E; Rowlinson, A; Russell, D M; Salvaterra, R; Alighieri, S di Serego; Tagliaferri, G; Vergani, S D; Elliott, J; Farina, C; Hartoog, O E; Karjalainen, R; Klose, S; Knust, F; Levan, A J; Schady, P; Sudilovski, V; Willingale, R

2014-01-01T23:59:59.000Z

107

Federal Acquisition Regulation; Federal Acquisition Circular 2005-47; Summary  

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

7; Summary 7; Summary This document summarizes the Federal Acquisition Regulation (FAR) rules agreed to by the Civilian Agency Acquisition Council and the Defense Acquisition Regulations Council (Councils) in this Federal Acquisition Circular (FAC) 2005-47. All were effective December 13, 2010 except Items II, HUB Zone, and VI, Pass Through, which will be effective January 12, 2011. List of Rules in FAC 2005-47 Item Subject FAR case Analyst ------------------------------------------------------------------------------------------------------------ ---- I..................................... Notification of Employee 2010-006 McFadden.

108

Circular polarization of obliquely propagating whistler wave magnetic field  

SciTech Connect (OSTI)

The circular polarization of the magnetic field of obliquely propagating whistler waves is derived using a basis set associated with the wave partial differential equation. The wave energy is mainly magnetic and the wave propagation consists of this magnetic energy sloshing back and forth between two orthogonal components of magnetic field in quadrature. The wave electric field energy is small compared to the magnetic field energy.

Bellan, P. M. [Applied Physics, Caltech, Pasadena California 91125 (United States)] [Applied Physics, Caltech, Pasadena California 91125 (United States)

2013-08-15T23:59:59.000Z

109

Circular hydraulic jump in generalized-Newtonian fluids  

E-Print Network [OSTI]

We carry out an analytical study of laminar circular hydraulic jumps, in generalized-Newtonian fluids obeying the two-parametric power-law model of Ostwald-de Waele. Under the boundary-layer approximation we obtained exact expressions determining the flow, an implicit relation for the jump radius is derived. Corresponding results for Newtonian fluids can be retrieved as a limiting case for the flow behavior index n=1, predictions are made for fluids deviating from Newtonian behavior.

Rai, Ashutosh; Poria, Swarup

2008-01-01T23:59:59.000Z

110

Friction (Chapter 5, section 8) & Circular Motion (Chapter 6,  

E-Print Network [OSTI]

1 Week 5 Friction (Chapter 5, section 8) & Circular Motion (Chapter 6, sections 1-2) Lecture Quiz 1 travels in time t is: A. x B. 1.5x C. 3x D. 4.5x E. 9x Forces of Friction When an object to the interactions between the object and its environment This resistance is called the force of friction Forces

111

Circular modes for flat beams in the LHC  

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

Typically x/y optical coupling is considered as unwanted and thus suppressed; particular exclusions are electron and ionization coolers. Could some special coupled modes be effectively applied for the LHC complex? Perhaps, the answer is positive: use of the circular modes in the injectors with their transformation into planar modes in the LHC allows both the space charge and beam-beam luminosity limitations to be significantly reduced, if not practically eliminated.

Burov, A.

2013-06-01T23:59:59.000Z

112

Circular modes for flat beams in the LHC  

Science Journals Connector (OSTI)

Typically x/y optical coupling is considered as unwanted and thus suppressed; particular exclusions are electron and ionization coolers. Could some special coupled modes be effectively applied for the LHC complex? Perhaps, the answer is positive: use of the circular modes in the injectors with their transformation into planar modes in the LHC allows both the space charge and beam-beam luminosity limitations to be significantly reduced, if not practically eliminated.

A. Burov

2013-06-24T23:59:59.000Z

113

File:DEQ MFSA Circular 1.pdf | Open Energy Information  

Open Energy Info (EERE)

DEQ MFSA Circular 1.pdf DEQ MFSA Circular 1.pdf Jump to: navigation, search File File history File usage File:DEQ MFSA Circular 1.pdf Size of this preview: 463 × 599 pixels. Other resolution: 464 × 600 pixels. Go to page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 Go! next page → next page → Full resolution ‎(1,275 × 1,650 pixels, file size: 313 KB, MIME type: application/pdf, 33 pages) File history Click on a date/time to view the file as it appeared at that time. Date/Time Thumbnail Dimensions User Comment current 16:00, 9 October 2012 Thumbnail for version as of 16:00, 9 October 2012 1,275 × 1,650, 33 pages (313 KB) Dklein2012 (Talk | contribs) You cannot overwrite this file. Edit this file using an external application (See the setup

114

NON-ZEEMAN CIRCULAR POLARIZATION OF MOLECULAR ROTATIONAL SPECTRAL LINES  

SciTech Connect (OSTI)

We present measurements of circular polarization from rotational spectral lines of molecular species in Orion KL, most notably {sup 12}CO (J = 2 {yields} 1), obtained at the Caltech Submillimeter Observatory with the Four-Stokes-Parameter Spectral Line Polarimeter. We find levels of polarization of up to 1%-2% in general; for {sup 12}CO (J = 2 {yields} 1) this level is comparable to that of linear polarization also measured for that line. We present a physical model based on resonant scattering in an attempt to explain our observations. We discuss how slight differences in scattering amplitudes for radiation polarized parallel and perpendicular to the ambient magnetic field, responsible for the alignment of the scattering molecules, can lead to the observed circular polarization. We also show that the effect is proportional to the square of the magnitude of the plane of the sky component of the magnetic field and therefore opens up the possibility of measuring this parameter from circular polarization measurements of Zeeman insensitive molecules.

Houde, Martin; Jones, Scott; Rajabi, Fereshte [Department of Physics and Astronomy, The University of Western Ontario, London, ON, N6A 3K7 (Canada)] [Department of Physics and Astronomy, The University of Western Ontario, London, ON, N6A 3K7 (Canada); Hezareh, Talayeh [Max-Planck-Institut fuer Radioastronomie, Auf dem Huegel 69, D-53121 Bonn (Germany)] [Max-Planck-Institut fuer Radioastronomie, Auf dem Huegel 69, D-53121 Bonn (Germany)

2013-02-10T23:59:59.000Z

115

Dynamical evolution of quasi-circular binary black hole data  

E-Print Network [OSTI]

We study the fully nonlinear dynamical evolution of binary black hole data, whose orbital parameters are specified via the effective potential method for determining quasi-circular orbits. The cases studied range from the Cook-Baumgarte innermost stable circular orbit (ISCO) to significantly beyond that separation. In all cases we find the black holes to coalesce (as determined by the appearance of a common apparent horizon) in less than half an orbital period. The results of the numerical simulations indicate that the initial holes are not actually in quasi-circular orbits, but that they are in fact nearly plunging together. The dynamics of the final horizon are studied to determine physical parameters of the final black hole, such as its spin, mass, and oscillation frequency, revealing information about the inspiral process. We show that considerable resolution is required to extract accurate physical information from the final black hole formed in the merger process, and that the quasi-normal modes of the final hole are strongly excited in the merger process. For the ISCO case, by comparing physical measurements of the final black hole formed to the initial data, we estimate that less than 3% of the total energy is radiated in the merger process.

Miguel Alcubierre; Bernd Bruegmann; Peter Diener; F. Siddhartha Guzman; Ian Hawke; Scott Hawley; Frank Herrmann; Michael Koppitz; Denis Pollney; Edward Seidel; Jonathan Thornburg

2004-11-30T23:59:59.000Z

116

Configuration management in nuclear power plants  

E-Print Network [OSTI]

Configuration management (CM) is the process of identifying and documenting the characteristics of a facility's structures, systems and components of a facility, and of ensuring that changes to these characteristics are properly developed, assessed, approved, issued, implemented, verified, recorded and incorporated into the facility documentation. The need for a CM system is a result of the long term operation of any nuclear power plant. The main challenges are caused particularly by ageing plant technology, plant modifications, the application of new safety and operational requirements, and in general by human factors arising from migration of plant personnel and possible human failures. The IAEA Incident Reporting System (IRS) shows that on average 25% of recorded events could be caused by configuration errors or deficiencies. CM processes correctly applied ensure that the construction, operation, maintenance and testing of a physical facility are in accordance with design requirements as expressed in the d...

2003-01-01T23:59:59.000Z

117

Residence time distribution and heat transfer in circular pipe fitted with longitudinal rectangular wings  

Science Journals Connector (OSTI)

Abstract Numerical simulations are used to analyze the heat and mass transfer in a circular pipe fitted with longitudinal rectangular vortex generators for Reynolds number between 7500 and 15,000 based on the pipe diameter. The aim of the present study is to test and quantify the mixing efficiency of a new solution able to avoid the bypass region that exists in the center of the high efficiency vortex static mixer (HEV), and also to enhance the heat transfer without increasing the pressure losses. The rectangular wings used here generate each a streamwise counter-rotating vortex pair sweeping the volume of the mixer and act as internal agitator on the flow. The particle dispersion is investigated by analyzing Poincar sections and by studying the residence time distribution (RTD). The two approaches show much better mass transfer performance and better mixing homogeneity for the new wings arrangement. The heat transfer is also investigated and it is shown that the thermal enhancement factor in the new arrangement is much greater than that of the conventional systems used in the industry. When compared to the HEV heat exchangers it is shown that the thermal enhancement in the present configuration reaches about 40% relative to the classic HEV and 15% relative to the reversed HEV.

Charbel Habchi; Jean-Luc Harion

2014-01-01T23:59:59.000Z

118

Flow patterns and heat transfer around six in-line circular cylinders at low Reynolds number  

E-Print Network [OSTI]

The flow field and the heat transfer around six in-line iso-thermal circular cylinders has been studied by mean of numerical simulations. Two values of the center to center spacing ($s=3.6d$ and $4d$, where $d$ is the cylinder diameter) at Reynolds number of $100$ and Prandtl number of $0.7$ has been investigated. Similarly to the in-line two cylinder configuration, in this range a transition in the flow and in the heat transfer occurs. Two different flow patterns have been identified: the stable shear layer (SSL) mode and the shear layer secondary vortices (SLSV) mode, at $3.6$ and $4$ spacing ratio ($s/d$), respectively. At $s/d=3.6$ the flow pattern causes the entrainment of cold fluid on the downstream cylinders enhancing the heat transfer. On the other hand at $s/d=4$ two stable opposite shear layer prevent the cold fluid entrainment over the downstream cylinders reducing their heat exchange. The overall time average heat transfer of the array is enhanced up to 25% decreasing the spacing ratio from $4$ t...

Fornarelli, Francesco; Lippolis, Antonio

2014-01-01T23:59:59.000Z

119

Cooling rate dependence of the in-plane magnetic penetration depth in N-type BEDT-TTF superconductors  

E-Print Network [OSTI]

Abstract. We performed dc magnetization measurements under the control of cooling-rate in the organic superconductors ?-(BEDT-TTF) 2X (X=Cu(NCS) 2 and Cu[N(CN) 2]Br). A distinct different cooling-rate dependence of the in-plane magnetic penetration depth (? //(0)) was observed between two salts, where ? //(0) was estimated from a linear extrapolation to 0 K. In the Cu(NCS) 2 salt, ? //(0) remains unchanged regardless of cooling-rate, while T c decreases slightly in fastercooling. On the other hand, ? //(0) in the Cu[N(CN) 2]Br salt becomes long significantly in fastercooling. We quantitatively explain the change of ? //(0) in the cooling-rate as an impurity effect by terminal ethylene disorder in BEDT-TTF molecules in terms of the local and clean limit approximation. Key words. Organic superconductor, magnetization, penetration depth, London model. 1.

N. Yoneyama; A. Higashihara; T. Sasaki; T. Nojima; N. Kobayashi

120

Load bearing capacity of API X65 pipe with dent defect under internal pressure and in-plane bending  

Science Journals Connector (OSTI)

The objective of this study was to investigate the effect of the dent magnitude on the collapse behavior of a dented pipe subjected to a combined internal pressure and in-plane bending. The plastic collapse behavior and bending moment of the dented pipe containing several dent dimensions were evaluated using elasticplastic finite element (FE) analyses. The indenters used to manufacture the dents on the API 5L X65 pipe were hemispherical rods with diameters of 40, 80, 160 and 320mm. Dent depths of 19, 38, 76, 114 and 152mm were introduced to the pipe with a diameter of 762mm and a wall thickness of 17.5mm. A closing or opening in-plane bending load was applied to the dented pipes pressurized under an internal pressure equivalent to atmospheric pressure as well as pressures of 4, 8, and 16MPa. The FE analyses results showed that the plastic collapse behavior of the dented pipes was significantly governed by the bending mode and the dent geometry. Moment-bending angle curves for the dented pipe were obtained from computer simulations and evaluated with a variety of factors in the FE analyses. The load bearing capacity of the dented pipes under the combined load was evaluated by TES (Twice Elastic Slope) moments. The load bearing capacity of the pipe containing up to a 5% dent depth of the outer diameter was not reduced in comparison to that of the plain pipe. The opening bending mode had a higher load bearing capacity than the closing bending mode under the combined load regardless of dent depth. The TES moment decreased with increasing dent depth and internal pressure regardless of the bending modes.

Jong-hyun Baek; Young-pyo Kim; Woo-sik Kim; Jae-min Koo; Chang-sung Seok

2012-01-01T23:59:59.000Z

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


121

Surveillance Guide - CMS 3.1 Configuration Management Implementation  

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

CONFIGURATION MANAGEMENT IMPLEMENTATION CONFIGURATION MANAGEMENT IMPLEMENTATION 1.0 Objective The objective of this surveillance is to verify implementation of configuration management requirements. These surveillance activities provide a basis for evaluating the effectiveness of the contractor's program for implementation and control of configuration management and for establishing compliance with DOE requirements. References 2.1 DOE 430.1, Life Cycle Project Management 2.2 DOE-STD-1073-93, Guide for Operational Configuration Management 3.0 Requirements Implemented This surveillance is conducted to implement requirements of the Functions, Responsiblities and Authorities Manual (FRAM), Section 2, Configuration Management, FRAM #s 3 and 4. These requirements are

122

Category:Vertical Electrical Sounding Configurations | Open Energy  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Category Edit History Facebook icon Twitter icon » Category:Vertical Electrical Sounding Configurations Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermalpower.jpg Looking for the Vertical Electrical Sounding Configurations page? For detailed information on Vertical Electrical Sounding Configurations as exploration techniques, click here. Category:Vertical Electrical Sounding Configurations Add.png Add a new Vertical Electrical Sounding Configurations Technique Pages in category "Vertical Electrical Sounding Configurations" The following 2 pages are in this category, out of 2 total.

123

Kinetic Stability of the Field Reversed Configuration  

SciTech Connect (OSTI)

New computational results are presented which advance the understanding of the stability properties of the Field-Reversed Configuration (FRC). The FRC is an innovative confinement approach that offers a unique fusion reactor potential because of its compact and simple geometry, translation properties, and high plasma beta. One of the most important issues is FRC stability with respect to low-n (toroidal mode number) MHD modes. There is a clear discrepancy between the predictions of standard MHD theory that many modes should be unstable on the MHD time scale, and the observed macroscopic resilience of FRCs in experiments.

E.V. Belova; R.C. Davidson; H. Ji; and M. Yamada

2002-07-09T23:59:59.000Z

124

Strong circular photogalvanic effect in ZnO epitaxial films  

SciTech Connect (OSTI)

A strong circular photogalvanic effect (CPGE) in ZnO epitaxial films was reported under interband excitation. It was observed that CPGE current is as large as 100 nA/W in ZnO, which is about one order in magnitude higher than that in InN film while the CPGE currents in GaN films are not detectable. The possible reasons for the above observations are the strong spin orbit coupling in ZnO or the inversed valence band structure of ZnO.

Zhang, Q.; Wang, X. Q.; Yin, C. M.; Shen, B. [State Key Laboratory of Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing 100871 (China); Chen, Y. H.; Chang, K. [Laboratory of Semiconductor Materials Science, Institute of Semiconductors, CAS, Beijing 100083 (China); Ge, W. K. [Department of Physics, Tsinghua University, Beijing 100871 (China)

2011-12-23T23:59:59.000Z

125

Analysis of transverse apertures in a circular waveguide  

E-Print Network [OSTI]

, (r, g, z) + H, (r, g, z) = h(r, g)en&' + h, (r, P)ei"*' where E, and H, are the transverse field components and E, and H, are the axial field components of the waveguide fields. By substitution of the previous decompositions into Maxwell's equauons... equation Vzhz + gihz =0 h, is equal to the scalar function V given in equation (10. b). Therefore, the axial magnetic field can be written as hx = ttr = J?(k, r) ( sin(nP) or cos(ntIt) ) e-i? (17) 15 For the circular waveguide cross section shown...

Eastham, Gary Bryan

2012-06-07T23:59:59.000Z

126

Vibration of circular plates, of several thicknesses, with three supports  

E-Print Network [OSTI]

~ ~ ~ ~ ~ ~ e ~ o ~ ~ i Prccedure and DeeoriPt'alen Of APPSXat'aua ~ ~ e ~ a ~ 0 ~ ~ i EmPirioal Ccrrelabicn Of Dataa ~ ~ ~ 1 ~ ~ ~ 01 ~ ~ ~ ~ ~ ~ ~ ~ i Kathemat, ical Theory of Thin Plates ~ a ~ ~ ~ ~ ~ 1 ~ a ~ ~ ~ Heeultaa ~ ~ ~ ~ ~ a... (cps) e M = symmetric mode, ie. 1, 2, 3, and 4. h= thickness of circular plate, in, Vhen there are mox'e than-thoro variables involved in the x esult, s of an experimental research, an empirical xelat, ionsh1p concerning the several variables may...

Ballentine, John Richard

2012-06-07T23:59:59.000Z

127

Wave induced forces on a partially exposed circular cylinder  

E-Print Network [OSTI]

to determine the wave forces on a pipeline rest. ing on the bottom partia'lly embeded in surrounding sediments was conducted. The forces were measured by strain gauge load cells and recorded on an electronic strip chart recorder. The resulting forces were... Associated with the Potential Function of Stokes' 3rd Order Wave Theory Fluid Density Circular Have Frequency (ML a) O'-. 'APTER I IN RJCUCTION Since the Tate nineteenth century, men have been constructing various types of pipelines in t"e ocean...

Parker, Michael Edward

2012-06-07T23:59:59.000Z

128

Nuclear molecular configurations in heavy ion collisions  

SciTech Connect (OSTI)

The possibilities of nuclear molecular configurations in symmetric and asymmetric heavy ion collisions are investigated by choosing a proper parametrization for the molecule-like compound state. We treat the nucleus as a rotating liquid drop in terms of the elliptic lemniscatoid parametrization suggested by Royer and Remaud which describes all deformed shapes that occur during the process of fusion of two nuclei, starting from two touching spheres to a single one with the intermediate formation of a deep neck. Only one parameter ({ital s} for the symmetric and {ital s}{sub 1} for the conditional asymmetric case) is needed to define all the shapes encountered in the process. The shape has a neck as long as {ital s} or {ital s}{sub 1} is less than 1/ {radical}2 . In this parametrization, analytical expressions can be obtained for volume, surface, and moment of inertia while the Coulomb energy has to be evaluated numerically. The total energy of the system is calculated as a function of the parameter {ital s} or {ital s}{sub 1}, for various spins and if the stable shape corresponding to minimum energy is one with a neck, then it is concluded that the molecular configuration is possible. Our model yields results which are in good agreement with the experimental findings.

Shanmugam, G.; Padmini, M.D. (Department of Physics, Presidency College, Madras 600005, India (IN))

1989-09-01T23:59:59.000Z

129

Robot self-configuration using a physical test harness  

E-Print Network [OSTI]

Robot control software packages require a configuration step prior to use. The configuration requires that robot parameters such as the dimensions of the robot, the radius of its wheels, and the location of sensors in body ...

Castro, Javier Alejandro

2008-01-01T23:59:59.000Z

130

Providing Configuration Management Support in Software Engineering Environments  

E-Print Network [OSTI]

Providing Configuration Management Support in Software Engineering Environments Jun Han Peninsula development project. A software engineering environment should not only pro- vide support for software engineering environments and demonstrate how configuration management can be achieved in such en- vironments

Han, Jun

131

A New Method for Optimal Configuration of Weapon System  

Science Journals Connector (OSTI)

This paper put forward a new method for Optimal Configuration of Weapon System (OCWS). It combines PROMETHEE II...

Dechao Zhou; Shiyan Sun; Qiang Wang

2009-01-01T23:59:59.000Z

132

Cylindrical Circular and Elliptical, Toroidal Circular and Elliptical Multipoles Fields, Potentials and their Measurement for Accelerator Magnets  

E-Print Network [OSTI]

Recent progress in particle accelerator tracking has shown that the field representation is one of the major limits of the prediction accuracy especially for machines, whose aperture is fully filled by the beam and thus higher the artefacts created by higher order modes have to be thoroughly understood. The standard tool for field presentation today are cylindrical circular multipoles due to their straight forward correspondence to the Cartesian coordinates. In this paper we extend the standard approach to other coordinate systems, show how these can be measured next to their realisation in measuring the SIS100 Magnets for the FAIR project.

Schnizer, Pierre; Schnizer, Bernhard

2014-01-01T23:59:59.000Z

133

NEAR-INFRARED CIRCULAR POLARIZATION IMAGES OF NGC 6334-V  

SciTech Connect (OSTI)

We present results from deep imaging linear and circular polarimetry of the massive star-forming region NGC 6334-V. These observations show high degrees of circular polarization (CP), as much as 22% in the K{sub s} band, in the infrared nebula associated with the outflow. The CP has an asymmetric positive/negative pattern and is very extended ({approx}80'' or 0.65 pc). Both the high CP and its extended size are larger than those seen in the Orion CP region. Three-dimensional Monte Carlo light-scattering models are used to show that the high CP may be produced by scattering from the infrared nebula followed by dichroic extinction by an optically thick foreground cloud containing aligned dust grains. Our results show not only the magnetic field orientation of around young stellar objects, but also the structure of circumstellar matter such as outflow regions and their parent molecular cloud along the line of sight. The detection of the large and extended CP in this source and the Orion nebula may imply the CP origin of the biological homochirality on Earth.

Kwon, Jungmi; Tamura, Motohide; Hashimoto, Jun; Kusakabe, Nobuhiko; Kandori, Ryo [National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588 (Japan); Lucas, Phil W.; Hough, James H. [Centre for Astrophysics Research, University of Hertfordshire, College Lane, Hatfield AL10 9AB (United Kingdom); Nakajima, Yasushi [Center of Information and Communication Technology, Hitotsubashi University, 2-1 Naka, Kunitachi, Tokyo 186-8601 (Japan); Nagayama, Takahiro [Department of Astrophysics, Nagoya University, Nagoya 464-8602 (Japan); Nagata, Tetsuya, E-mail: jungmi.kwon@nao.ac.jp [Department of Astronomy, Kyoto University, Kyoto 606-8502 (Japan)

2013-03-01T23:59:59.000Z

134

A COMPUTATIONAL STUDY OF SUBSONIC FLOWFIELDS OVER A MISSILE CONFIGURATION  

E-Print Network [OSTI]

A COMPUTATIONAL STUDY OF SUBSONIC FLOWFIELDS OVER A MISSILE CONFIGURATION I.H.Tuncer \\Lambda , M a missile configuration are computed at high angles of attack ranging from 15 ffi to 60 ffi using the NASA in the higher incidence range. INTRODUCTION The flow over a full missile configuration with ca­ nards and tails

Tuncer, Ismail H.

135

Semantic Web-Based Management of Routing Configurations  

Science Journals Connector (OSTI)

Today, network operators typically reason about network behaviour by observing the effects of a particular configuration in operation. This configuration process typically involves logging configuration changes and rolling back to a previous version ... Keywords: BGP, Conflict detection, Network management, Policy languages, Routing policy, Semantic web

Flix J. Garca Clemente; Jose M. Alcaraz Calero; Jorge Bernal Bernab; Juan Manuel Marn Prez; Gregorio Martnez Prez; Antonio F. Gmez Skarmeta

2011-06-01T23:59:59.000Z

136

Competing quasiparticle configurations in {sup 163}W  

SciTech Connect (OSTI)

Excited states in the neutron-deficient nuclide {sup 163}W were investigated using the {sup 106}Cd({sup 60}Ni,2pn){sup 163}W reaction at a beam energy of 270 MeV. The level scheme for {sup 163}W was extended significantly with the observation of five new band structures. The yrast band based on a 13/2{sup +} isomeric state is extended up to (57/2{sup +}). Two band structures were established on the 7/2{sup -} ground state. Quasiparticle configuration assignments for the new band structures were made on the basis of cranked Woods-Saxon shell-model calculations. The results reported in this article suggest that the negative-parity nu(f{sub 7/2},h{sub 9/2}) orbitals are responsible for the first rotational alignment in the yrast band.

Thomson, J.; Joss, D. T.; Paul, E. S.; Bianco, L.; Darby, I. G.; Grahn, T.; Page, R. D.; Pakarinen, J.; Sapple, P. J. [Oliver Lodge Laboratory, University of Liverpool, Liverpool, L69 7ZE (United Kingdom); Scholey, C.; Eeckhaudt, S.; Greenlees, P. T.; Jones, P.; Julin, R.; Juutinen, S.; Ketelhut, S.; Leino, M.; Nyman, M.; Rahkila, P.; Saren, J. [Department of Physics, University of Jyvaeskylae, FI-40014 Jyvaeskylae (Finland)

2010-01-15T23:59:59.000Z

137

Generator configuration for solid oxide fuel cells  

DOE Patents [OSTI]

Disclosed are improvements in a solid oxide fuel cell generator 1 having a multiplicity of electrically connected solid oxide fuel cells 2, where a fuel gas is passed over one side of said cells and an oxygen-containing gas is passed over the other side of said cells resulting in the generation of heat and electricity. The improvements comprise arranging the cells in the configuration of a circle, a spiral, or folded rows within a cylindrical generator, and modifying the flow rate, oxygen concentration, and/or temperature of the oxygen-containing gases that flow to those cells that are at the periphery of the generator relative to those cells that are at the center of the generator. In these ways, a more uniform temperature is obtained throughout the generator.

Reichner, Philip (Plum Boro, PA)

1989-01-01T23:59:59.000Z

138

Numerical simulation of wind resonance of a circular profile by means of the vortex element method  

Science Journals Connector (OSTI)

The problem regarding the numerical simulation of a circular profile motion in a ... element method is used. The phenomenon of wind resonance has been examined. The investigation has...

I. K. Marchevskii; O. I. Ivanov

2009-10-01T23:59:59.000Z

139

An experimental study on heat transfer from a horizontal heated circular cylinder enhanced by water spray.  

E-Print Network [OSTI]

??A series of experiments were conducted to investigate the heat transfer which occurs with a heated, constant heat flux, horizontal, single circular cylinder is exposed (more)

Chau, Man Hei

2009-01-01T23:59:59.000Z

140

Circular diffuse scattering of akermanite studied by the optical diffraction method  

Science Journals Connector (OSTI)

Circular diffuse scattering appears when the incommensurate phase of akermanite transforms partly to either the normal phase ... constant phase difference within each layer of the akermanite structure.

K. Iishi; K. Hagiya; M. Ohmasa

1994-05-01T23:59:59.000Z

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


141

Fast electron bremsstrahlung in axisymmetric magnetic configuration  

SciTech Connect (OSTI)

The nonthermal bremsstrahlung is calculated in a plasma with arbitrary axisymmetric magnetic configuration, taking into account the relativistic angular anisotropy of the radiation cross section at high photon energies, the helical winding of the field lines on the magnetic flux surfaces, and the poloidal variation of the electron distribution function including particle trapping effects. The fast electron dynamics during current drive in tokamaks and reverse field pinches can be investigated in detail by coupling this calculation to a bounce-averaged relativistic Fokker-Planck solver, which calculates the electron distribution function. The asymmetry between high- and low-field side hard x-ray emission intensity that has been measured on the Tore-Supra tokamak [Equipe TORE SUPRA, in Proceedings of the 15th Conference on Plasma Physics and Controlled Nuclear Fusion Research, Seville (International Atomic Energy Agency, Vienna, 1995) Vol. 1, IAEA-CN-60/A1-5 (Institute of Physics, Bristol, U.K., 1995), p. 105] is explained for the first time by the role of trapped electrons. A much stronger poloidal asymmetry is predicted for the line-integrated fast electron bremsstrahlung in the poloidal plane of the Madison Symmetric Torus [R. N. Dexter et al., Fusion Tech. 19, 131 (1991)], since the helical winding of the magnetic field lines is much larger for a reverse field pinch configuration. In this case, the hard x-ray emission is no longer a flux surface quantity, which prevents local reconstructions using a standard Abel inversion, whatever the geometrical arrangement of the lines of sight.

Peysson, Y.; Decker, J. [Association Euratom-CEA, CEA, IRFM, F-13108 Saint-Paul-lez-Durance (France)

2008-09-15T23:59:59.000Z

142

Modeling scatterers embedded in plane?layered media by a hybrid Haskell?Thompson and boundary integral equation method  

Science Journals Connector (OSTI)

A hybrid Haskell?Thompson and Boundary IntegralEquation (BIE) method is formulated which can model the acoustic and elastic response of scatterers embedded in plane?layered media. The scatterers can have an arbitrary smooth shape but must not intersect layer interfaces. The Green's function of the scatterer is computed by BIEs in the (x z w) domain and the Green's functions of the layers is computed by a Haskell?Thompson method in the (kx z w) domain. Their fields are coupled by the appropriate combination of FFTs and extrapolation operators and are finally summed up in a Born series. For notational convenience this hybrid method will be called a Generalized Born Series (GBS) method. Two advantages of the GBS method are (1) it is more efficient than finite elements or finite differences for small scatterers embedded in thickly layered media; and (2) no artificial side reflections are generated from the infinitely extended plane interfaces. The disadvantages are (1) the convergence rate of the GBS depends on the model and is unknown a priori; and (2) the computation time increases with the size of the scatterer. [Work supported by MIDAS a consortium of oil and geophysical companies.

Gerard T. Schuster; Lance Smith

1984-01-01T23:59:59.000Z

143

Modeling scatterers embedded in plane?layered media by a hybrid HaskellThomson and boundary integral equation method  

Science Journals Connector (OSTI)

A hybrid HaskellThomson and boundary integralequation (BIE) method is formulated which can model the acoustic or elastic response of scatterers embedded in plane?layered media. The scatterers can have an arbitrary smooth shape but must not intersect layer interfaces. The Greens function of the scatterer is computed by BIEs in the (x z ?) domain and the Greens function of the layers is computed by a HaskellThomson method in the (k x z ?) domain. Their fields are coupled by the appropriate combination of FFTs and extrapolation operators and are finally summed up in a Born series. For notational convenience this hybrid method will be called a generalized Born series (GBS) method. Two advantages of the GBS method are (1) it is more efficient than finite elements or finite differences for small scatterers embedded in thickly layered media and (2) no artificial side reflections are generated from the infinitely extended plane interfaces. The disadvantages are (1) the convergence rate of the GBS depends on the model and is unknown a p r i o r i and (2) the computation time increases with the size of the scatterer.

Gerard T. Schuster; Lance C. Smith

1985-01-01T23:59:59.000Z

144

Experimental Investigations of Mixing?Processes in The Wake of A Circular Cylinder in Stratified Flows  

Science Journals Connector (OSTI)

The existence of oxygen?rich saltwater in the deeper basins of the Baltic Sea is mainly caused by sporadic inflow?events of salty and oxygen?rich saltwater from the North Sea into the Baltic Sea. These inflows take place over the narrow and shallow Drogden Sill into the first basin the Arkona Sea. Actually different offshore wind farms are planned in this region which opens a whole string of questions about the ecological influence of offshore wind farms on the mixing of both layers. To answer these questions numerical simulations of the mixing processes in the wake of wind turbine bases have been carried out. For the evaluation and quantification of these mixing processes a laboratory?experiment with a simplified model of the natural configuration has been realized. For this purpose a new water?channel has been build. This channel allows to simulate the inflow of saltwater in a size?scale of 1:100 to reality by keeping the densimetric Froude?Number. The experimental configuration consists of a long circular cylinder with a diameter of 8 cm in a 10 cm thick saltwater?layer flowing under a stationary fresh?water layer of 30 cm thickness. Focus point of this investigation is the wake of the cylinder in the stratified flow and the mixing?processes in the shear?layer due to the influence of the cylinder. The stratified flow around the cylinder induces the typical Karman?vortex wake horseshoe?vortices at the bottom and in the shear layer and Kelvin?Helmholtz?instabilities in the shear?layer. Nonintrusive optical measurements were taken with planar laser?induced fluorescence (PLIF) combined with two dimensional particle imaging velocimetry (PIV). The combination of both techniques allows the determination of instantaneous velocity components u and w from PIV?measurements the salinity s from PLIF?experiments their variations u? w? s? and the correlations of those like Reynolds?stress terms (u?u? u?w? w?w?) and turbulent? or Reynolds?flux terms (w?s? u?s?). Especially the vertical Reynolds?flux w?s? is the characteristic parameter to evaluate entrainment?velocity and entrainment?coefficient.

Peter Menzel; Frank Httmann; Martin Brede; Alfred Leder

2007-01-01T23:59:59.000Z

145

Phase-field simulation of electric-field-induced in-plane magnetic domain switching in magnetic/ferroelectric layered heterostructures  

E-Print Network [OSTI]

Phase-field simulation of electric-field-induced in-plane magnetic domain switching in magnetic. Phys. Lett. 99, 182510 (2011) Quantum tunneling of the Bloch point in a magnetic film with strong uniaxial magnetic anisotropy Low Temp. Phys. 37, 690 (2011) Evolution of magnetic bubble domains

Chen, Long-Qing

146

Exciton diamagnetic shift in GaAs/Ga1-xAlxAs quantum wells under in-plane magnetic fields  

Science Journals Connector (OSTI)

Using a variational procedure in the effective-mass and parabolic-band approximations we investigate the effects of in-plane magnetic fields on the exciton states in single GaAs/Ga1-xAlxAs quantum wells. Exciton properties ... Keywords: 71.55.Eq, 73.20.Mf, 73.21.Fg, Diamagnetic shifts, Magnetoexcitons, Quantum wells

C. A. Duque; M. de Dios-Leyva; L. E. Oliveira

2008-03-01T23:59:59.000Z

147

Detailed structure of spinning detonation in a circular tube  

SciTech Connect (OSTI)

A single spinning detonation wave propagating in a circular tube, discovered experimentally in 1926, is simulated three-dimensionally with a detailed chemical reaction mechanism. The detonation front obtained numerically rotates periodically with a Mach leg, whiskers, and a transverse detonation. A long pressure trail, which is distributed from the transverse detonation to downstream, was reproduced, clearly showing that the pressure trail also spins synchronously with the transverse detonation. The formation of an unburned gas pocket behind the detonation front was not observed in the present simulations because the rotating transverse detonation completely consumed the unburned gas. The calculated profiles of instantaneous OH mass fraction have a keystone shape behind the detonation front. The numerical results for pitch, track angle, Mach stem angle, and incident shock angle on the tube wall agree well with the experimental results. (author)

Tsuboi, N. [Space Transportation Engineering Department, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Yoshinodai 3-1-1, Sagamihara, Kanagawa 229-8510 (Japan); Eto, K.; Hayashi, A.K. [Department of Mechanical Engineering, Aoyama Gakuin University, Fuchinobe 5-10-1, Sagamihara, Kanagawa 229-8558 (Japan)

2007-04-15T23:59:59.000Z

148

Large-amplitude circularly polarized electromagnetic waves in magnetized plasma  

SciTech Connect (OSTI)

We consider large-amplitude circularly polarized (LACP) waves propagating in a magnetized plasma. It is well-known that the dispersion relation for such waves coincides with the dispersion relation given by the linear theory. We develop the model of LACP wave containing a finite population of Cerenkov resonant particles. We find that the current of resonant particles modifies the linear dispersion relation. Dispersion curves of low-frequency (i.e., whistler and magnetosonic) waves are shifted toward larger values of the wave vector, i.e., waves with arbitrarily large wavelengths do not exist in this case. Dispersion curves of high-frequency waves are modified so that the wave phase velocity becomes smaller than the speed of light.

Vasko, I. Y., E-mail: vaskoiy@gmail.com; Artemyev, A. V.; Zelenyi, L. M. [Space Research Institute, RAS, Moscow (Russian Federation)] [Space Research Institute, RAS, Moscow (Russian Federation)

2014-05-15T23:59:59.000Z

149

Federal Acquisition Regulations Federal Acquisition Circular 2005-51 Summary  

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

Regulations Regulations Federal Acquisition Circular 2005-51 Summary Federal Register April 1, 2011 76FR 18304 I Women-Owned Small Business (WOSB) Program (Interim Rule). II Clarification of Standard Form 26--Award/Contract. Item I--Women-Owned Small Business (WOSB) Program (FAR Case 2010-015) (Interim) This interim rule amends the FAR to add subpart 19.15, Women-Owned Small Business Program, which will assist Federal agencies in achieving the 5 percent statutory goal for contracting with women-owned small business (WOSB) concerns. Agencies may restrict competition to economically disadvantaged women-owned small business (EDWOSB) concerns for contracts assigned a North American Industry Classification Systems (NAICS) code in an industry in which the Small Business Administration has

150

On the Radiation of Sound from an Unflanged Circular Pipe  

Science Journals Connector (OSTI)

A rigorous and explicit solution is obtained for the problem of sound radiation from an unflanged circular pipe, assuming axially symmetric excitation. The solution is valid throughout the wave-length range of dominant mode (plane wave) propagation in the pipe. The reflection coefficient for the velocity potential within the pipe and the power-gain function, embodying the characteristics of the radiation pattern, are evaluated numerically. The absorption cross section of the pipe for a plane wave incident from external space, and the gain function for this direction, are found to satisfy a reciprocity relation. In particular, the absorption cross section for normal incidence is just the area of the mouth. At low frequencies of vibration, the velocity potential within the pipe is the same as if the pipe were lengthened by a certain fraction of the radius and the open end behaved as a loop. The exact value of the end correction turns out to be 0.6133.

Harold Levine and Julian Schwinger

1948-02-15T23:59:59.000Z

151

Protein Characterisation by Synchrotron Radiation Circular Dichroism (SRCD) Spectroscopy  

SciTech Connect (OSTI)

Circular dichroism (CD) spectroscopy is a well-established technique for the study of proteins. Synchrotron radiation circular dichroism (SRCD) spectroscopy extends the utility of conventional CD spectroscopy (i.e. using laboratory-based instruments) because the high light flux from a synchrotron enables collection of data to lower wavelengths, detection of spectra with higher signal-to-noise levels and measurements in the presence of strongly absorbing non-chiral components such as salts, buffers, lipids and detergents. This review describes developments in instrumentation, methodologies and bioinformatics that have enabled new applications of the SRCD technique for the study of proteins. It includes examples of the use of SRCD spectroscopy for providing static and dynamic structural information on molecules, including determinations of secondary structures of intact proteins and domains, assessment of protein stability, detection of conformational changes associated with ligand and drug binding, monitoring of environmental effects, examination of the processes of protein folding and membrane insertion, comparisons of mutant and modified proteins, identification of intermolecular interactions and complex formation, determination of the dispositions of proteins in membranes, identification of natively disordered proteins and their binding partners and examination of the carbohydrate components of glycoproteins. It also discusses how SRCD can be used in conjunction with macromolecular crystallography and other biophysical techniques to provide a more complete picture of protein structures and functions, including how proteins interact with other macromolecules and ligands. This review also includes a discussion of potential new applications in structural and functional genomics using SRCD spectroscopy and future instrumentation and bioinformatics developments that will enable such studies. Finally, the appendix describes a number of computational/bioinformatics resources for secondary structure analyses that take advantage of the improved data quality available from SRCD. In summary, this review discusses how SRCD can be used for a wide range of structural and functional studies of proteins.

Wallace, B.

2009-01-01T23:59:59.000Z

152

Configuration Management Plan for the Tank Farm Contractor  

SciTech Connect (OSTI)

The Configuration Management Plan for the Tank Farm Contractor describes configuration management the contractor uses to manage and integrate its technical baseline with the programmatic and functional operations to perform work. The Configuration Management Plan for the Tank Farm Contractor supports the management of the project baseline by providing the mechanisms to identify, document, and control the technical characteristics of the products, processes, and structures, systems, and components (SSC). This plan is one of the tools used to identify and provide controls for the technical baseline of the Tank Farm Contractor (TFC). The configuration management plan is listed in the management process documents for TFC as depicted in Attachment 1, TFC Document Structure. The configuration management plan is an integrated approach for control of technical, schedule, cost, and administrative processes necessary to manage the mission of the TFC. Configuration management encompasses the five functional elements of: (1) configuration management administration, (2) configuration identification, (3) configuration status accounting, (4) change control, and (5 ) configuration management assessments.

WEIR, W.R.

2000-04-21T23:59:59.000Z

153

Global Stability of the Field Reversed Configuration  

SciTech Connect (OSTI)

New computational results are presented which provide a theoretical basis for the stability of the Field Reversed Configuration (FRC). The FRC is a compact toroid with negligible toroidal field in which the plasma is confined by a poloidal magnetic field associated with toroidal diamagnetic current. Although many MHD modes are predicted to be unstable, FRCs have been produced successfully by several formation techniques and show surprising macroscopic resilience. In order to understand this discrepancy, we have developed a new 3D nonlinear hybrid code (kinetic ions and fluid electrons), M3D-B, which is used to study the role of kinetic effects on the n = 1 tilt and higher n modes in the FRC. Our simulations show that there is a reduction in the tilt mode growth rate in the kinetic regime, but no absolute stabilization has been found for s bar less than or approximately equal to 1, where s bar is the approximate number of ion gyroradii between the field null and the separatrix. However, at low values of s bar, the instabilities saturate nonlinearly through a combination of a lengthening of the initial equilibrium and a modification of the ion distribution function. These saturated states persist for many Alfven times, maintaining field reversal.

E.V. Belova; S.C. Jardin; H. Ji; R.M. Kulsrud; W. Park; M. Yamada

2000-11-15T23:59:59.000Z

154

Blank fire configuration for automatic pistol  

DOE Patents [OSTI]

A pistol configured to fire blank cartridges includes a modified barrel with a breech portion connected to an aligned inner sleeve. Around the inner sleeve, there is disposed an outer sleeve having a vent therein through which the cartridge discharges. The breech portion is connected to a barrel anchor to move backward in a slight arc when the pistol is fired. A spring retention rod projects from the barrel anchor and receives a shortened recoil spring therearound which recoil spring has one end abutting a stop on the barrel anchor and the other end in abutment with the end of a spring retaining cup. The spring retaining cup is engaged by a flange projecting from a slide so that when the pistol is fired, the slide moves rearwardly against the compression of the spring to eject the spent cartridge and then moves forwardly under the urging of the spring to load a fresh cartridge into the breech portion. The spring then returns all of the slidable elements to their initial position so that the pistol may again be fired.

Teague, Tommy L. (Albuquerque, NM)

1990-01-01T23:59:59.000Z

155

SAPHIRE 8 Software Configuration Management Plan  

SciTech Connect (OSTI)

The INL software developers use version control for both the formally released SAPHIRE versions, as well as for source code. For each formal release of the software, the developers perform an acceptance test: the software must pass a suite of automated tests prior to official release. Each official release of SAPHIRE is assigned a unique version identifier. The release is bundled into a standard installation package for easy and consistent set-up by individual users. Included in the release is a list of bug fixes and new features for the current release, as well as a history of those items for past releases. Each formal release of SAPHIRE will have passed an acceptance test. In addition to assignment of a unique version identifier for an official software release, each source code file is kept in a controlled library. Source code is a collection of all the computer instructions written by developers to create the finished product. The library is kept on a server, where back-ups are regularly made. This document describes the configuration management approach used as part of the SAPHIRE development.

Curtis Smith

2010-01-01T23:59:59.000Z

156

The writhing of circular crosssection rods: undersea cables to DNA supercoils  

Science Journals Connector (OSTI)

...circular cross-section rods: undersea cables to DNA supercoils D. M. Stump 1 W...tension and torque, such as undersea cables, and to closed loops with inserted twist...circular cross-section rods: undersea cables to DNA supercoils By D. M. Stump1...

1998-01-01T23:59:59.000Z

157

CRAD, Configuration Management - Los Alamos National Laboratory Weapons  

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

Configuration Management - Los Alamos National Laboratory Configuration Management - Los Alamos National Laboratory Weapons Facility CRAD, Configuration Management - Los Alamos National Laboratory Weapons Facility April 2004 A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for an assessment of the Configuration Management program at the Los Alamos National Laboratory, Weapons Facility. CRADs provide a recommended approach and the types of information to gather to assess elements of a DOE contractor's programs. CRAD, Configuration Management - Los Alamos National Laboratory Weapons Facility More Documents & Publications CRAD, Configuration Management - Los Alamos National Laboratory TA 55 SST

158

V-036: EMC Smarts Network Configuration Manager Database Authentication  

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

6: EMC Smarts Network Configuration Manager Database 6: EMC Smarts Network Configuration Manager Database Authentication Bypass Vulnerability V-036: EMC Smarts Network Configuration Manager Database Authentication Bypass Vulnerability November 29, 2012 - 3:30am Addthis PROBLEM: EMC Smarts Network Configuration Manager Database Authentication Bypass Vulnerability PLATFORM: EMC Smarts Network Configuration Manager (NCM) all versions prior 9.1 ABSTRACT: Two vulnerabilities were reported in EMC Smarts Network Configuration Manager. REFERENCE LINKS: EMC Identifier: ESA-2012-057 Secunia Advisory SA51408 SecurityTracker Alert ID: 1027812 CVE-2012-4614 CVE-2012-4615 IMPACT ASSESSMENT: Medium DISCUSSION: The systems uses a hard-coded key to encrypt authentication credentials on the target system [CVE-2012-4615]. A local user with knowledge of the key

159

Plug-In Hybrid Electric Vehicles - PHEV Modeling - Powertrain Configuration  

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

Impact of Powertrain Configuration on Fuel Efficiency To evaluate the fuel efficiency potential of plug-in hybrid electric vehicles, it is necessary to compare the advantages and drawbacks of several powertrain configurations, ranging from power split to parallel and series. PSAT offers the unique ability to simulate and compare hundreds of powertrain configurations. The goal of the effort is to define the most promising configurations depending on the particular usage. Component sizes, fuel efficiency and cost will be used to make appropriate decisions. The configurations currently being considered include, but are not limited to: Pre-transmission parallel HEV Post-transmission parallel HEV Power split HEV (including THS II and GM 2 Mode) Series The figure below shows an example comparison of three powertrain configurations (parallel, series and power split).

160

Gauge Configurations for Lattice QCD from The Gauge Connection  

DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

The Gauge Connection is an experimental archive for lattice QCD and a repository of gauge configurations made freely available to the community. Contributors to the archive include the Columbia QCDSP collaboration, the MILC collaboration, and others. Configurations are stored in QCD archive format, consisting of an ASCII header which defines various parameters, followed by binary data. NERSC has also provided some utilities and examples that will aid users in handling the data. Users may browse the archive, but are required to register for a password in order to download data. Contents of the archive are organized under four broad headings: Quenched (more than 1200 configurations); Dynamical, Zero Temperature (more than 300 configurations); MILC Improved Staggered Asqtad Lattices (more than 7000 configurations); and Dynamical, Finite Temperature (more than 1200 configurations)

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


161

Category:Electrical Profiling Configurations | Open Energy Information  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Category Edit History Facebook icon Twitter icon » Category:Electrical Profiling Configurations Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermalpower.jpg Looking for the Electrical Profiling Configurations page? For detailed information on Electrical Profiling Configurations as exploration techniques, click here. Category:Electrical Profiling Configurations Add.png Add a new Electrical Profiling Configurations Technique Pages in category "Electrical Profiling Configurations" The following 3 pages are in this category, out of 3 total. D DC Resistivity Survey (Dipole-Dipole Array) DC Resistivity Survey (Mise-Á-La-Masse)

162

Configuring Workstations for use with the PARS II System  

Broader source: Energy.gov [DOE]

This file provides the users with instructions on how to configure the workstations to work with the Department's Project Assessment Reporting System (PARS II)

163

Input Device Selection and Interaction Configuration with ICON  

Science Journals Connector (OSTI)

This paper describes ICON, a novel editor designed to configure a ... to actions into a graphical interactive application. ICON allows power users to customise the...

Pierre Dragicevic; Jean-Daniel Fekete

2001-01-01T23:59:59.000Z

164

Vertical Electrical Sounding Configurations At Mt Princeton Hot...  

Open Energy Info (EERE)

navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Vertical Electrical Sounding Configurations At Mt Princeton Hot Springs Geothermal Area (Zohdy, Et Al.,...

165

The application of local approach to assess the influence of in-plane constraint on cleavage fracture  

SciTech Connect (OSTI)

The assessment of real or postulated flaws within critical components is conventionally carried out using methods based on single parameter fracture mechanics. For low constraint configurations (e.g. shallow cracks) such methods can provide highly conservative assessments. Two-parameter (J-T, J-Q) fracture mechanics has been developed to quantify the influence of crack-tip constraint on fracture and this development has been incorporated into a modified R6 framework to reduce the conservatisms associated with the assessment of low constraint configurations. This framework requires that the constraint of the structure is quantified (with respect to T or Q) and that the materials fracture response to constraint is measured by testing a number of cracked specimens which sample a range of constraint levels. An alternative method of assessment, which may be used in situations where fracture data are unavailable over the full range of constraint, is the so-called local approach to fracture. In this Paper, the local approach has been used alongside the modified R6 framework to assess the cleavage fracture behavior of a well characterized mild steel plate at {minus}50 C. The local approach method predicts: (i) an upswing in cleavage fracture toughness as a function of decreasing crack-tip constraint which is conservative with respect to the actual materials response, (ii) an increase in the scatter of cleavage fracture toughness as a function of decreasing crack-tip constraint. This is a direct consequence of framing the local approach model within two-parameter Weibull statistics. Finally it is shown that the local approach may be used successfully alongside the modified R6 framework to assess low constraint geometries: resultant failure assessment curves reduce the conservatism of the conventional Option 1 curve.

Sherry, A.H.; Sanderson, D.J.; Lidbury, D.P.G. [AEA Technology, Risley (United Kingdom); Ainsworth, R.A. [Nuclear Electric, Berkeley (United Kingdom); Kikuchi, K. [JAERI, Tokai, Ibaraki (Japan)

1995-11-01T23:59:59.000Z

166

X-ray magnetic circular dichroism in (Ge,Mn) compounds: experiments and modeling Samuel Tardif,1, 2,  

E-Print Network [OSTI]

X-ray magnetic circular dichroism in (Ge,Mn) compounds: experiments and modeling Samuel Tardif,1, 2: July 29, 2013) X-ray absorption (XAS) and x-ray magnetic circular dichroism (XMCD) spectra at the L2),6 and x-ray spectroscopy (x-ray absorption spec- troscopy, XAS, and x-ray magnetic circular

167

Circular Higgs Factories & Possible Long-Term Strategy  

E-Print Network [OSTI]

In 2012 two LHC experiments have discovered a new particle with a mass around 125 GeV, which appears to be the scalar Higgs boson of the Standard Model. To further examine this remarkable particle it could be produced in large numbers for precision studies by an e+e? collider operating near the ZH threshold at beam energies of 120 GeV, or, in the s-channel by a gamma-gamma collider with primary electron beam energies of 80 GeV, or by a high-energy electron-proton collider. In this talk I will discuss tentative design parameters, novel concepts and accelerator-physics challenges (1) for a high-luminosity lepton-hadron collider, bringing into collision a 60-GeV electron beam from an energy-recovery electron linac with one of the LHC hadron beams LHeC , (2) for a gamma-gamma Higgs-factory collider based on the reconfigured recirculating SC electron linac SAPPHiRE and (3) for a circular e+e? Higgs-factory collider in a new tunnel with a circumference of 80-100 km TLEP. I will also discuss f...

Zimmermann, F

2013-01-01T23:59:59.000Z

168

Simulation on Buildup of Electron Cloud in Proton Circular Accelerator  

E-Print Network [OSTI]

Electron cloud interaction with high energy positive beam are believed responsible for various undesirable effects such as vacuum degradation, collective beam instability and even beam loss in high power proton circular accelerator. An important uncertainty in predicting electron cloud instability lies in the detail processes on the generation and accumulation of the electron cloud. The simulation on the build-up of electron cloud is necessary to further studies on beam instability caused by electron cloud. China Spallation Neutron Source (CSNS) is the largest scientific project in building, whose accelerator complex includes two main parts: an H- linac and a rapid cycling synchrotron (RCS). The RCS accumulates the 80Mev proton beam and accelerates it to 1.6GeV with a repetition rate 25Hz. During the beam injection with lower energy, the emerging electron cloud may cause a serious instability and beam loss on the vacuum pipe. A simulation code has been developed to simulate the build-up, distribution and dens...

Liu, Yu-Dong

2014-01-01T23:59:59.000Z

169

ARM: Surface Radiation Measurement Quality Control testing, including climatologically configurable limits  

DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

Surface Radiation Measurement Quality Control testing, including climatologically configurable limits

Hodges, Gary; Stoffel, Tom; Kutchenreiter, Mark; Kay, Bev; Habte, Aron; Ritsche, Michael; Morris, Victor; Anderberg, Mary

170

NAVIERSTOKES ANALYSIS OF SUBSONIC FLOWFIELDS OVER A MISSILE CONFIGURATION  

E-Print Network [OSTI]

NAVIER­STOKES ANALYSIS OF SUBSONIC FLOWFIELDS OVER A MISSILE CONFIGURATION Ismail H.Tuncer \\Lambda Canard deflection angle INTRODUCTION The flow over a full missile configuration with ca­ nards and tails on the aerodynamic characteristics of canard­controlled missiles at high angles of attack is of considerable interest

Tuncer, Ismail H.

171

A Configuration Management task ontology for semantic integration  

Science Journals Connector (OSTI)

Configuration Management (CM) is an important task for developing complex products. It is a complex task and there are many CM systems that aim to support it. However, generally, these systems work in isolation and there is a need for integrating them. ... Keywords: configuration management, semantic integration, task ontology

Rodrigo Fernandes Calhau; Ricardo de Almeida Falbo

2012-03-01T23:59:59.000Z

172

EXTREMAL CONFIGURATIONS OF ROBOT ARMS IN THREE DIMENSIONS  

E-Print Network [OSTI]

EXTREMAL CONFIGURATIONS OF ROBOT ARMS IN THREE DIMENSIONS DIRK SIERSMA Abstract. We define a volume function for a robot arm in R3 and give geometric conditions for its critical points. 1. Introduction configurations of planar polygonal linkages and open robot arms considered as the critical points of the oriented

Siersma, Dirk

173

An Approach to Security Policy Configuration Using Semantic Threat Graphs  

E-Print Network [OSTI]

An Approach to Security Policy Configuration Using Semantic Threat Graphs Simon N. Foley, in turn, unnecessarily expose the enterprise to known threats. This paper pro- poses a threat management- nomic configuration of security mechanisms. This knowledge is mod- eled in terms of Semantic Threat

Foley, Simon

174

_ OF THE CONFIGURATION-INTERACIIO~ ENERGY --_-r ) Jack SIMONS  

E-Print Network [OSTI]

_ OF THE CONFIGURATION-INTERACIIO~ ENERGY - - _- r ) -_ _. Jack SIMONS Deparrment of Chemrstty. Bhndern, Oslo 3, Norway Received 26 October 1983 We derive expressions for the first through fourth denvatives of the configuration-Interaction (CI) electromc energy with respect to molecular deformation

Helgaker, Trygve

175

Magnetic reconnection configurations and particle acceleration in solar flares  

E-Print Network [OSTI]

types of solar flares. Upper panel: two-ribbon flares; Lower panel: compact flares. The color showsMagnetic reconnection configurations and particle acceleration in solar flares P. F. Chen, W. J space under different magnetic configurations. Key words: solar flares, magnetic reconnection, particle

Chen, P. F.

176

CRAD, Configuration Management - Los Alamos National Laboratory TA 55 SST  

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

Configuration Management - Los Alamos National Laboratory TA Configuration Management - Los Alamos National Laboratory TA 55 SST Facility CRAD, Configuration Management - Los Alamos National Laboratory TA 55 SST Facility June 2005 A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for an assessment of the Configuration Management program at the Los Alamos National Laboratory, TA 55 SST Facility. CRADs provide a recommended approach and the types of information to gather to assess elements of a DOE contractor's programs. CRAD, Configuration Management - Los Alamos National Laboratory TA 55 SST Facility More Documents & Publications CRAD, Emergency Management - Los Alamos National Laboratory TA 55 SST

177

CRAD, Configuration Management - Oak Ridge National Laboratory High Flux  

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

Configuration Management - Oak Ridge National Laboratory High Configuration Management - Oak Ridge National Laboratory High Flux Isotope Reactor CRAD, Configuration Management - Oak Ridge National Laboratory High Flux Isotope Reactor February 2007 A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for a February 2007 assessment of the Configuration Management Program in preparation for restart of the Oak Ridge National Laboratory, High Flux Isotope Reactor. CRADs provide a recommended approach and the types of information to gather to assess elements of a DOE contractor's programs. CRAD, Configuration Management - Oak Ridge National Laboratory High Flux Isotope Reactor More Documents & Publications

178

E-Print Network 3.0 - adiabatic circular cylinder Sample Search...  

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

1983;105:161-7. 2 Balabani S, Yianneskis M... on the flow past a circular cylinder at a subcritical ... Source: Luo, Xiaoyu - Department of Mathematics, University of Glasgow...

179

Induced chirality in fisetin upon binding to serum albumin: experimental circular dichroism and TDDFT calculations  

Science Journals Connector (OSTI)

Theoretical absorption and electronic circular dichroism (ECD) spectra predicted via time-dependent density functional theory (TDDFT) calculations on the neutral and four anionic species of fisetin, an achiral fl...

Iulia Matei; Sorana Ionescu; Mihaela Hillebrand

2012-09-01T23:59:59.000Z

180

Circular Dichroism Techniques for the Analysis of Intrinsically Disordered Proteins and Domains  

Science Journals Connector (OSTI)

Circular dichroism (CD) spectroscopy is a simple and powerful technique, which allows for the assessment of the conformational properties of a protein or protein domain. Intrinsically disordered proteins (IDPs), ...

Luca B. Chemes; Leonardo G. Alonso

2012-01-01T23:59:59.000Z

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


181

An Analysis of Depolarization of Circular Polarization in S-Band Radar Sensing of Alberta Storms  

Science Journals Connector (OSTI)

An analysis is given of storm events in 198285 in which the Alberta Research Council circularly polarized polarization diversity S-band radar recorded data indicating significant depolarization. The accompanying two-way differential propagation ...

Anthony R. Holt

2001-09-01T23:59:59.000Z

182

Experimental investigation of an oscillating circular piston positive displacement flowmeter: I - Piston movement and pressure losses.  

E-Print Network [OSTI]

Tests of an oscillating circular piston positive displacement flowmeter are described which focused on the effect on pressure drop across the meter of variation in key parameters. These included flow rate, liquid density and viscosity, mass...

Morton, Charlotte E; Hutchings, Ian M; Baker, Roger C

183

Experimental investigation of an oscillating circular piston positive displacement flowmeter: II - Leakage flows and wear tests.  

E-Print Network [OSTI]

Experimental data from an oscillating circular piston positive displacement flowmeter are described which focused on leakage flows and wear. This is the second part of a two part paper on the experimental tests, the first part concerned piston...

Morton, Charlotte E; Baker, Roger C; Hutchings, Ian M

184

Travels of a floating space tool. A spacecraft is in a circular orbit ...  

E-Print Network [OSTI]

Travels of a floating space tool. A spacecraft is in a circular orbit 6750 km from the Earth's center of mass (i.e, it is about 250 miles above the surface).

2008-01-22T23:59:59.000Z

185

An approach to configuring product family using rough set theory  

Science Journals Connector (OSTI)

Configuration design is one of the most important elements in the design for product family, with which designers could customise products for customers according to their specific requirements. The traditional approach to configuring products is based on configuration rules which reflect the mapping relations between customer requirements and design variables. But how to acquire the configuration rules is becoming the bottleneck. A kind of general way is to depend on design experts themselves to create such rules. It would take plenty of time for design experts to establish rules database. As such, this paper presents a framework of configuration design for product family through giving the variant components with different attribute values, in which the acquisition of configuration rules is connected with the idea of data mining using the rough set theory from large numbers of historical design data instead of the design expert's experience. It can help not only design experts but also novice designers analyse the dependence between customer requirements and design parameters, and acquire the configuration rules hidden in the historical data easily.

Bin Zhu; Pingyu Jiang

2005-01-01T23:59:59.000Z

186

Use of Crystals for High Energy Photon Beam Linear Polarization Conversion into Circular  

E-Print Network [OSTI]

The possibility to convert the photon beam linear polarization into circular one at photon energies of hundreds GeV with the use of crystals is considered. The energy and orientation dependencies of refractive indexes are investigated in case of diamond, silicon and germanium crystal targets. To maximize the values for figure of merit, the corresponding crystal optimal orientation angles and thickness are found. The degree of circular polarization and intensity of photon beam are estimated and possibility of experimental realization is discussed.

N. Z. Akopov; A. B. Apyan; S. M. Darbinyan

2000-02-15T23:59:59.000Z

187

EIA - Natural Gas Pipeline Network - Network Configuration & System Design  

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

Network Configuration & System Design Network Configuration & System Design About U.S. Natural Gas Pipelines - Transporting Natural Gas based on data through 2007/2008 with selected updates Network Configuration and System Design Overview | Transmission/Storage | Design Criteria | Importance of Storage| Overall Pipeline System Configuration Overview A principal requirement of the natural gas transmission system is that it be capable of meeting the peak demand of its shippers who have contracts for firm service. To meet this requirement, the facilities developed by the natural gas transmission industry are a combination of transmission pipelines to bring the gas to the market areas and of underground natural gas storage sites and liquefied natural gas (LNG) peaking facilities located in the market areas.

188

CRAD, Configuration Management Assessment Plan | Department of Energy  

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

Configuration Management Assessment Plan Configuration Management Assessment Plan CRAD, Configuration Management Assessment Plan Performance Objective: The objective of this assessment is to determine whether a Configuration Management Program (CM) is in place which allows for the availability and retrievability of accurate information, improves response to design and operational decisions, enhances worker safety, increases facility safety and reliability, increases efficiency of work efforts, and helps maintain integrity of interfacing orders. Criteria: The CM program supports DOE program implementation through the following: It provides the mechanisms for identifying, cataloging, and maintaining the design requirements and design basis (established to satisfy DOE O 420.1 Facility Safety). It carries forward the technical baseline established in the design

189

Exhibit A: Modeling in Support of Two Unit Operating Configurations |  

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

Modeling in Support of Two Unit Operating Configurations Modeling in Support of Two Unit Operating Configurations Exhibit A: Modeling in Support of Two Unit Operating Configurations Docket No. EO-05-01: Tables showing modeling of emissions from units of the Mirant Potomac Power Plant. Exhibit A: Modeling in Support of Two Unit Operating Configurations More Documents & Publications Comments on Emergency Order to Resume Limited Operation at the Potomac River Generating Station, Alexandria, VA from the Chesapeake Climate Action Network. Comments on Department of Energy's Emergency Order To Resume Limited Operation at Mirant's Potomac River Generating Station and Proposed Mirant Compliance Plan Answer of Potomac Electric Power Company and PJM lnterconnection, L.L.C. to the October 6, 2005 motion filed by the Virginia Department of

190

High Energy Electron Confinement in a Magnetic Cusp Configuration  

E-Print Network [OSTI]

We report experimental results validating the concept that plasma confinement is enhanced in a magnetic cusp configuration when beta (plasma pressure/magnetic field pressure) is order of unity. This enhancement is required for a fusion power reactor based on cusp confinement to be feasible. The magnetic cusp configuration possesses a critical advantage: the plasma is stable to large scale perturbations. However, early work indicated that plasma loss rates in a reactor based on a cusp configuration were too large for net power production. Grad and others theorized that at high beta a sharp boundary would form between the plasma and the magnetic field, leading to substantially smaller loss rates. The current experiment validates this theoretical conjecture for the first time and represents critical progress toward the Polywell fusion concept which combines a high beta cusp configuration with an electrostatic fusion for a compact, economical, power-producing nuclear fusion reactor.

Park, Jaeyoung; Sieck, Paul E; Offermann, Dustin T; Skillicorn, Michael; Sanchez, Andrew; Davis, Kevin; Alderson, Eric; Lapenta, Giovanni

2014-01-01T23:59:59.000Z

191

Constrained Density-Functional Theory--Configuration Interaction  

E-Print Network [OSTI]

In this thesis, I implemented a method for performing electronic structure calculations, "Constrained Density Functional Theory-- Configuration Interaction" (CDFT-CI), which builds upon the computational strengths of Density ...

Kaduk, Benjamin James

2012-01-01T23:59:59.000Z

192

Auto-configuration of Savants in a complex, variable network  

E-Print Network [OSTI]

In this thesis, present a system design that enables Savants to automatically configure both their network settings and their required application programs when connected to an intelligent data management and application ...

Yu, Joseph Hon

2005-01-01T23:59:59.000Z

193

Integrated Coverage and Connectivity Configuration for Energy Conservation  

E-Print Network [OSTI]

Integrated Coverage and Connectivity Configuration for Energy Conservation in Sensor Networks University in St. Louis An effective approach for energy conservation in wireless sensor networks: Sensor network, wireless ad hoc network, coverage, connectiv- ity, energy conservation, topology

Lu, Chenyang

194

Configuration Management and Version Control in Earth System Modelling  

Science Journals Connector (OSTI)

This section discusses the process of developing and constructing Earth System Models (ESMs). The construction of an ESM...configuration management (CM), the process of handling change in software systems wh...

Mick Carter; Dave Matthews

2012-01-01T23:59:59.000Z

195

High temperature solid electrolyte fuel cell configurations and interconnections  

DOE Patents [OSTI]

High temperature fuel cell configurations and interconnections are made including annular cells having a solid electrolyte sandwiched between thin film electrodes. The cells are electrically interconnected along an elongated axial outer surface.

Isenberg, Arnold O. (Forest Hills, PA)

1984-01-01T23:59:59.000Z

196

Optimization of the Configuration of Pixilated Detectors for...  

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

Optimization of the Configuration of Pixilated Detectors for the X-ray Spectroscopy of Hot Plasmas Based on the Shannon-Nyquist Theorem ---- Inventor(s): Manfred L. Bitter, Kenneth...

197

Adsorption configurations of two nitrogen atoms on graphene  

SciTech Connect (OSTI)

We present calculations for different possible configurations of two nitrogen adatoms on graphene using the code VASP, based on Density Functional Theory (DFT). Two N atoms adsorbed on the graphene sheet can share a bond in two ways. They take positions either just above two adjacent carbon atoms or they form a bridge across opposite bonds of a hexagon in the graphene sheet. Both these configurations result into structural distortion of the sheet. Another stable configuration involving two N atoms consists of an N{sub 2} molecule which is physisorbed at a distance 3.69 on the graphene sheet. Two N atoms can also be adsorbed on alternate bridge sites of neighbouring hexagons of graphene. This configuration again leads to distortion of the sheet in perpendicular direction.

Rani, Babita, E-mail: babitabaghla15@gmail.com [Department of Physics, Punjabi University, Patiala- 147 002 and Department of Physics, Panjab University, Chandigarh- 160 014 (India); Jindal, V. K.; Dharamvir, Keya [Department of Physics, Panjab University, Chandigarh- 160 014 (India)

2014-04-24T23:59:59.000Z

198

A study of neutron-deuteron scattering in configuration space  

E-Print Network [OSTI]

A new computational method for solving the configuration-space Faddeev equations for the breakup scattering problem has been applied to nd scattering both below and above the two-body threshold.

V. M. Suslov; M. A. Braun; I. Filikhin; B. Vlahovic

2006-10-09T23:59:59.000Z

199

Baffle Configuration Effects on Dynamo Self-Generation  

E-Print Network [OSTI]

Baffle Configuration Effects on Dynamo Self-Generation Understanding the Dynamics of the Earths Earth, an example of a self generating magnetic field. Self Generation, what helps: High magnetic

Anlage, Steven

200

Radio Frequency Station - Beam Dynamics Interaction in Circular Accelerators  

SciTech Connect (OSTI)

The longitudinal beam dynamics in circular accelerators is mainly defined by the interaction of the beam current with the accelerating Radio Frequency (RF) stations. For stable operation, Low Level RF (LLRF) feedback systems are employed to reduce coherent instabilities and regulate the accelerating voltage. The LLRF system design has implications for the dynamics and stability of the closed-loop RF systems as well as for the particle beam, and is very sensitive to the operating range of accelerator currents and energies. Stability of the RF loop and the beam are necessary conditions for reliable machine operation. This dissertation describes theoretical formalisms and models that determine the longitudinal beam dynamics based on the LLRF implementation, time domain simulations that capture the dynamic behavior of the RF station-beam interaction, and measurements from the Positron-Electron Project (PEP-II) and the Large Hadron Collider (LHC) that validate the models and simulations. These models and simulations are structured to capture the technical characteristics of the system (noise contributions, non-linear elements, and more). As such, they provide useful results and insight for the development and design of future LLRF feedback systems. They also provide the opportunity to study diverse longitudinal beam dynamics effects such as coupled-bunch impedance driven instabilities and single bunch longitudinal emittance growth. Coupled-bunch instabilities and RF station power were the performance limiting effects for PEP-II. The sensitivity of the instabilities to individual LLRF parameters, the effectiveness of alternative operational algorithms, and the possible tradeoffs between RF loop and beam stability were studied. New algorithms were implemented, with significant performance improvement leading to a world record current during the last PEP-II run of 3212 mA for the Low Energy Ring. Longitudinal beam emittance growth due to RF noise is a major concern for LHC. Simulations studies and measurements were conducted that clearly show the correlation between RF noise and longitudinal bunch emittance, identify the major LLRF noise contributions, and determine the RF component dominating this effect. With these results, LHC upgrades and alternative algorithms are evaluated to reduce longitudinal emittance growth during operations. The applications of this work are described with regard to future machines and analysis of new technical implementations, as well as to possible future work which would continue the directions of this dissertation.

Mastoridis, Themistoklis; /Stanford U., Elect. Eng. Dept. /SLAC

2011-03-01T23:59:59.000Z

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


201

A memory based method for computing robot-arm configuration  

E-Print Network [OSTI]

A MEMORY BASED METHOD FOR COMPUTING ROBOT-ARM CONFIGURATION A Thesis by SALEEM KARIMJEE Submitted to the Graduate College of Texas ARM University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE August 1985... Major Subject: Mechanical Engineering A MEMORY BASED METHOD FOR COMPUTING ROBOT-ARM CONFIGURATION A Thesis by SALEEM KARIMJEE Approved as to style and content by: B jamin O'. Moo i (Chairman of Committee) Make McDermott (Member) , Norman C...

Karimjee, Saleem

1985-01-01T23:59:59.000Z

202

Configuration management program plan for Hanford site systems engineering  

SciTech Connect (OSTI)

This plan establishes the integrated configuration management program for the evolving technical baseline developed through the systems engineering process. This configuration management program aligns with the criteria identified in the DOE Standard, DOE-STD-1073-93. Included are specific requirements for control of the systems engineering RDD-100 database, and electronic data incorporated in the database that establishes the Hanford site technical baseline.

Hoffman, A.G.

1994-11-14T23:59:59.000Z

203

Workstation Configuration and Process Planning for RLW Operations  

Science Journals Connector (OSTI)

Abstract The application of Remote Laser Welding (RLW) has become an attractive assembly technology in various branches of industry, as it offers higher efficiency at lower costs compared to traditional Resistance Spot Welding (RSW) when high volumes of sheet metal assemblies are to be produced. However, the introduction of RLW technology raises multiple new issues in designing the configuration, the layout, and the behavior of the assembly system. Since configuring an RLW workstation and planning the welding process are closely interrelated problems, a hierarchical decision process must be applied where configuration and planning go hand in hand. The paper presents a hierarchical workflow for workstation configuration and process planning for RLW operations, and proposes methods for solving the decision problems related to each step of this workflow. A software toolbox is introduced that has been developed to facilitate a semi-automatic, mixed-initiative workstation design and to guide the expert user throughout the configuration, planning, programming, evaluation, and simulation of the RLW workstation. A case study from the automotive industry is presented, where the software tools developed are applied to configuring and planning the behavior of an RLW workstation that replaces RSW technology in assembling a car door.

Gbor Erd?s; Csaba Kardos; Zsolt Kemny; Andrs Kovcs; Jzsef Vncza

2014-01-01T23:59:59.000Z

204

Stochastic bifurcation and fractal and chaos control of a giant magnetostrictive film-shape memory alloy composite cantilever plate subjected to in-plane harmonic and stochastic excitation  

SciTech Connect (OSTI)

Stochastic bifurcation and fractal and chaos control of a giant magnetostrictive filmshape memory alloy (GMFSMA) composite cantilever plate subjected to in-plane harmonic and stochastic excitation were studied. Van der Pol items were improved to interpret the hysteretic phenomena of both GMF and SMA, and the nonlinear dynamic model of a GMFSMA composite cantilever plate subjected to in-plane harmonic and stochastic excitation was developed. The probability density function of the dynamic response of the system was obtained, and the conditions of stochastic Hopf bifurcation were analyzed. The conditions of noise-induced chaotic response were obtained in the stochastic Melnikov integral method, and the fractal boundary of the safe basin of the system was provided. Finally, the chaos control strategy was proposed in the stochastic dynamic programming method. Numerical simulation shows that stochastic Hopf bifurcation and chaos appear in the parameter variation process. The boundary of the safe basin of the system has fractal characteristics, and its area decreases when the noise intensifies. The system reliability was improved through stochastic optimal control, and the safe basin area of the system increased.

Zhu, Zhiwen, E-mail: zhuzhiwentju@163.com [Department of Mechanics, Tianjin University, Tianjin 300072 (China); Tianjin Key Laboratory of Nonlinear Dynamics and Chaos Control, Tianjin 300072 (China); Zhang, Qingxin, E-mail: zqxfirst@163.com; Xu, Jia, E-mail: xujia-ld@163.com [Department of Mechanics, Tianjin University, Tianjin 300072 (China)

2014-05-07T23:59:59.000Z

205

The configuration management program for the Emergency Management Support System  

SciTech Connect (OSTI)

Emergency response software is used increasingly by the US Department of Energy's (DOE's) Emergency Management Project (EMP) personnel at Hanford Site. This software must be reliable, of high quality, and capable of performing critical functions to support assessment of actual or potential consequences of any hazardous accidents onsite or events having potential offsite impacts. To better control the software and ensure its suitability for use as a tool to protect employees, the public, and environment, a method for specifying and certifying its capabilities and documenting its development and implementation was needed. A team of EMP staff, composed of personnel from Pacific Northwest Laboratory (PNL) and Boeing Computer Services- Richland (BCSR) under the direction of PNL EMP, responded to this need by developing a software configuration management program (CMP). This report documents the development of the CMP, including the strategies upon which the CMP is based, and describes the program as it has been implemented for EMS System software. The program relies on the integration of its three primary elements: the configuration management staff, tools, and process. Configuration management staff run the program, using specially designed configuration management forms to guide, document, and track the life cycle of the software. The configuration management process itself is reflected in the instructive forms and summarized in flowcharts representing each phase of the process -- from requirements specification through implementation and maintenance. 7 refs., 9 figs., 1 tab.

Probasco, K M [Pacific Northwest Lab., Richland, WA (United States); Stephan, E G [Boeing Computer Services Co., Richland, WA (United States)

1991-08-01T23:59:59.000Z

206

Weak formulations and solution multiplicity of equilibrium configurations with Coulomb friction  

E-Print Network [OSTI]

Weak formulations and solution multiplicity of equilibrium configurations with Coulomb friction configurations of elastic struc- tures in contact with Coulomb friction. We obtain a variational formulation configurations with arbitrary small friction coefficients. We illustrate the result in two space dimensions

Bostan, Mihai

207

Configuration of Hopper, NERSC's Cray XE6 System  

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

Configuration Configuration Configuration Hopper is NERSC's first peta-flop system, a Cray XE6, with a peak performance of 1.28 Petaflops/sec, 153,216 compute cores for running scientific applications, 217 Terabytes of memory, and 2 Petabytes of online disk storage. MC-proc.png Compute Nodes Hopper has 6,384 compute nodes made up of 2 twelve-core AMD 'MagnyCours'. Read More » login.jpg Login Nodes When you ssh to hopper.nersc.gov, you are connecting to a "login node." Read More » jaguar xt4 Interconnect A description of the custom Cray-designed network that Hopper uses for inter-node communication. Read More » xe6blade.png Support Nodes A description of other kinds of nodes included in Hopper for job launch, file systems, networking, and other services. Read More »

208

CRAD, Configuration Management - Oak Ridge National Laboratory High Flux  

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

Oak Ridge National Laboratory High Oak Ridge National Laboratory High Flux Isotope Reactor Contractor ORR CRAD, Configuration Management - Oak Ridge National Laboratory High Flux Isotope Reactor Contractor ORR February 2007, A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for a February 2007 assessment of the Configuration Managment Program portion of an Operational Readiness Review of the Oak Ridge National Laboratory, High Flux Isotope Reactor. CRADs provide a recommended approach and the types of information to gather to assess elements of a DOE contractor's programs. CRAD, Configuration Management - Oak Ridge National Laboratory High Flux

209

T-596: 0-Day Windows Network Interception Configuration Vulnerability |  

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

6: 0-Day Windows Network Interception Configuration 6: 0-Day Windows Network Interception Configuration Vulnerability T-596: 0-Day Windows Network Interception Configuration Vulnerability April 6, 2011 - 5:48am Addthis PROBLEM: 0-Day exploit of IPv4 and IPv6 mechanics and how it applies to Microsoft Windows Operating systems. PLATFORM: Microsoft Operating Systems (OS) Windows Vista, Windows 7, and Windows 2008 Server ABSTRACT: The links below describe a parasitic IPv6 layered over a native IPv4 network. This attack can be used to stage potential man-in-the-middle (MITM) attacks on IPv4 traffic. Please see the "Other Links" section below, as it provides an external URL reference. reference LINKS: InfoSec Institute - SLAAC Attack Cisco Threat Comparison and Best-Practice White Paper IMPACT ASSESSMENT: High

210

Laser photons acquire circular polarization by interacting with a Dirac or Majorana neutrino beam  

E-Print Network [OSTI]

It is shown that for the reason of neutrinos being left-handed and their gauge-couplings being parity-violated, linearly polarized photons acquire their circular polarization by interacting with neutrinos. Calculating the ratio of linear and circular polarizations of laser photons interacting with either Dirac or Majorana neutrino beam, we obtain this ratio for the Dirac neutrino case, which is about twice less than the ratio for the Majorana neutrino case. Based on this ratio, we discuss the possibility of using advanced laser facilities and the T2K neutrino experiment to measure the circular polarization of laser beams interacting with neutrino beams in ground laboratories. This could be an additional and useful way to gain some insight into the physics of neutrinos, for instance their Dirac or Majorana nature.

Rohoollah Mohammadi; She-Sheng Xue

2014-03-14T23:59:59.000Z

211

Novel gas embedded compressional Z-pinch configuration  

Science Journals Connector (OSTI)

Experimental results are presented of a novel Z-pinch configuration in which two concentric columns of an initial, partially ionized plasma are compressed. Experimental comparison with the laser initiated gas embedded Z pinch and with the microdischarge initiated dense Z pinch performed on the same generator shows that the new configuration exhibits axial compression and no macroscopic instabilities are observed. A maximum current of 130 kA is obtained for a discharge in hydrogen at 0.33 atm. On axis electron density, ne of 31025 m-3, is observed 110 ns after the initiation of the discharge, 20 times larger than the laser initiated gas embedded Z pinch.

L. Soto; H. Chuaqui; M. Favre; E. Wyndham

1994-05-02T23:59:59.000Z

212

Final Land Configuration for the Rocky Flats Environmental Technology Site  

SciTech Connect (OSTI)

Closure of the Rocky Flats Environmental Technology Site (RFETS) has been completed. The future land use of the site is designated as a National Wildlife Refuge. A joint effort between Kaiser-Hill, Department of Energy, U.S. Fish and Wildlife Service, Environmental Protection Agency, State of Colorado, and other stakeholders was initiated to provide direction for developing the final land configuration. Through early identification of issues and developing mutually agreeable solutions, the final land configuration of the site was successfully completed. (authors)

Stegen, R. L.; Kapinos, J. M.; Wehner, J. P.; Snyder, B. [Parsons, 1700 Broadway, Suite 900, Denver, Colorado 80290 (United States); Davis, R. W. [Kaiser-Hill Company, LLC, 9193 S. Jamaica, Englewood, Colorado 80112 (United States)

2006-07-01T23:59:59.000Z

213

Inductrack III configuration--a maglev system for high loads  

DOE Patents [OSTI]

Inductrack III configurations are suited for use in transporting heavy freight loads. Inductrack III addresses a problem associated with the cantilevered track of the Inductrack II configuration. The use of a cantilevered track could present mechanical design problems in attempting to achieve a strong enough track system such that it would be capable of supporting very heavy loads. In Inductrack III, the levitating portion of the track can be supported uniformly from below, as the levitating Halbach array used on the moving vehicle is a single-sided one, thus does not require the cantilevered track as employed in Inductrack II.

Post, Richard F

2013-11-12T23:59:59.000Z

214

Scour around a group of circular piles caused by waves and currents  

E-Print Network [OSTI]

SCOUR AROUND A GROUP OF CIRCULAR PILES CAUSED BY WAVES AND CURRENTS A Thesis by TA-YANG LEE Submitted to the graduate College of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE May 1983... Major Subject: Ocean Engineering SCOUR AROUND A GROUP OF CIRCULAR PILES CAUSED BY WAVES AND CURRENTS A Thesis by TA-YANG LEE Approved as to style and content by: John B. Herbich (Chairman of Committee) Robert O. Reid (Member) Gi lio V...

Lee, Ta-Yang

2012-06-07T23:59:59.000Z

215

Anomalous In-Plane Electronic Scattering in Charge Ordered Na0.41CoO20.6H2O  

Science Journals Connector (OSTI)

We report electronic transport measurements on high quality floating zone grown NaxCoO2 and Na0.41CoO20.6H2O single crystals. We find an in-plane electronic scattering minimum near 11K and a clear charge ordering at approximately 50K. The electronic and magnetic properties in hydrated and nonhydrated Na0.41CoO2 samples are similar at higher temperature, but evolve in markedly different ways below ?50??K, where a strong ferromagnetic tendency is observed in the hydrated sample. Model calculations show the relationship of this tendency to the structure of the Fermi surface. The results, particularly the clear differences between the hydrated and nonhydrated material show a substantially enhanced ferromagnetic tendency upon hydration. Implications for superconductivity are discussed.

Guixin Cao; Maxim M. Korshunov; Yuze Gao; Mathieu Le Tacon; David J. Singh; Chengtian Lin

2012-06-06T23:59:59.000Z

216

CONFIGURING A COLLABORATIVE VIRTUAL WORKSPACE FOR DISASTER MANAGEMENT OF  

E-Print Network [OSTI]

a strong impact on business. Oil & gas companies are thus continuously seeking to employ processesCONFIGURING A COLLABORATIVE VIRTUAL WORKSPACE FOR DISASTER MANAGEMENT OF OIL & GAS OFFSHORE workspace. Finally a prototype for oil & gas offshore structures disaster management based on our multi

Barbosa, Alberto

217

CMOS Photovoltaic-cell Layout Configurations for Harvesting Microsystems  

E-Print Network [OSTI]

CMOS Photovoltaic-cell Layout Configurations for Harvesting Microsystems Rajiv Damodaran Prabha, and radiation, photovoltaic (PV) systems are appealing options. Still, chip-sized CMOS PV cells produce only well in substrate cell are better. Index Terms--Ambient light energy, harvester, CMOS photovoltaic (PV

Rincon-Mora, Gabriel A.

218

CRAD, Configuration Management- Los Alamos National Laboratory Weapons Facility  

Broader source: Energy.gov [DOE]

A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for an assessment of the Configuration Management program at the Los Alamos National Laboratory, Weapons Facility.

219

Sustainability of Self-Configuring Wireless Sensor Bozena Kaminska  

E-Print Network [OSTI]

Sustainability of Self-Configuring Wireless Sensor Networks Bozena Kaminska Simon Fraser University monitoring and security. Those applications impose requirements for sustained, reliable, and fault-tolerant operation. We introduce a new ad-hoc wireless architecture in which forwarding is based on associativity

Gburzynski, Pawel

220

Novel Dipole Trapped Spheromak Configuration M. R. Brown,1,  

E-Print Network [OSTI]

Novel Dipole Trapped Spheromak Configuration M. R. Brown,1, * C. D. Cothran,1 J. Fung,1 M. J. Schaffer,2 and E. Belova3 We report the observation and characterization of a spheromak formed in the Swarthmore Spheromak Experiment (SSX) and trapped in a simple dipole magnetic field. The spheromak is studied

Brown, Michael R.

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


221

Verification of Network Management System Configurations David L. Cohrs  

E-Print Network [OSTI]

Verification of Network Management System Configurations David L. Cohrs (608) 262-6617 dave domains too autonomous for this centralized approach. Distributing the network management system causes- ments. The NMSL system then operates in two roles: it verifies network management specifications

Miller, Barton P.

222

ON THE CONFIGURATION-LP FOR SCHEDULING ON UNRELATED MACHINES  

E-Print Network [OSTI]

ON THE CONFIGURATION-LP FOR SCHEDULING ON UNRELATED MACHINES JOS? VERSCHAE AND ANDREAS WIESE Abstract. One of the most important open problems in machine scheduling is the problem of scheduling a set of jobs on unrelated machines to minimize the makespan. The best known approximation algorithm

Nabben, Reinhard

223

Minimum Power Configuration for Wireless Communication in Sensor Networks  

E-Print Network [OSTI]

conserve more energy than exist- ing minimum power routing and topology control protocols. Furthermore configuration, ad hoc net- works, energy efficiency, wireless communications Part of this article was published aggressively conserve energy in order to operate for extensive periods without wired power sources. Since

224

I.V. Stasyuk, O.V. Velychko CONFIGURATIONAL MODEL  

E-Print Network [OSTI]

Complex formation reactions of metal ions and ligand groups are of great importance due to pollution of environment by heavy metal (including actinides) species. In general this type of reaction can be described' & $ % I.V. Stasyuk, O.V. Velychko CONFIGURATIONAL MODEL OF METAL ION COMPLEX FORMATION IN WATER

225

Automated Configuration of Algorithms for Solving Hard Computational Problems  

E-Print Network [OSTI]

characteristics. Automated configuration procedures can facilitate algorithm development and be applied on the end. Inf., Darmstadt University of Technology, 2004 A THESIS SUBMITTED IN PARTIAL FULFILLMENT of such procedures separates high-level cognitive tasks carried out by humans from tedious low-level tasks that can

Hutter, Frank

226

Configuration Distribution and Designs of Codes in the Johnson Scheme  

E-Print Network [OSTI]

Configuration Distribution and Designs of Codes in the Johnson Scheme Tuvi Etzion Technion between perfect codes in the Johnson scheme and designs, and provide new tools for proving Delsarte conjecture that there are no nontrivial perfect codes in the Johnson scheme. Three topics will be considered

Etzion, Tuvi

227

Configuration management program plan for Hanford site systems engineering  

SciTech Connect (OSTI)

This plan establishes the integrated management program for the evolving technical baseline developed through the systems engineering process. This configuration management program aligns with the criteria identified in the DOE Standard, DOE-STD-1073-93. Included are specific requirements for control of the systems engineering RDD-100 database, and electronic data incorporated in the database that establishes the Hanford Site Technical Baseline.

Kellie, C.L.

1996-03-28T23:59:59.000Z

228

Electromagnetic Waves Propagation in 3D Plasma Configurations  

E-Print Network [OSTI]

Electromagnetic Waves Propagation in 3D Plasma Configurations Pavel Popovich, W. Anthony Cooper such method is based on heating the plasma by electromagnetic waves with various frequencies. Wave behaviour that allows to simulate mode-conversion effects. The wave equation is formulated in terms of electromagnetic

229

Version Models for Software Configuration Management REIDAR CONRADI  

E-Print Network [OSTI]

" (project manage- ment, SCM, and quality assurance have come into operation). Furthermore, SCM plays and change requests), and audit and review (quality assurance func- tions to preserve product consistency based on configuration rules. Finally, we provide an overview of systems that have had significant

Redmiles, David F.

230

Optical Rotatory and Circular Dichroic Scattering Werner Kaminsky,* Morten Andreas Geday, Javier Herreros-Cedres, and Bart Kahr*  

E-Print Network [OSTI]

Optical Rotatory and Circular Dichroic Scattering Werner Kaminsky,* Morten Andreas Geday, Javier, Washington 98195-1700 ReceiVed: June 23, 2002; In Final Form: NoVember 5, 2002 Optical effects are observed in regularly dyed crystals that serve to mimic optical rotation and circular dichroism by rotating the azimuth

Kaminsky, Werner

231

Electron acceleration by a circularly polarized laser pulse in a plasma K. P. Singha)  

E-Print Network [OSTI]

Electron acceleration by a circularly polarized laser pulse in a plasma K. P. Singha) Department of electrons in an axial static field are presented. The electron rotates around the propagation direction occurs between the electrons and electric field of the laser pulse for two optimum values of the magnetic

Roy, Subrata

232

REFERENCES AND NOTES 1. A. Hale and T. Bopp, IAU Circular 6187 (1995).  

E-Print Network [OSTI]

to an H2O-driven coma occurred at about 3 AU. The gas outflow velocity and temperature increased as HaleREFERENCES AND NOTES ___________________________ 1. A. Hale and T. Bopp, IAU Circular 6187 (1995 3 March 1997 Evolution of the Outgassing of Comet Hale-Bopp (C/1995 O1) from Radio Observations

Demoulin, Pascal

233

GLOBAL EXISTENCE FOR A TRANSLATING NEAR-CIRCULAR HELE-SHAW BUBBLE WITH SURFACE TENSION  

E-Print Network [OSTI]

GLOBAL EXISTENCE FOR A TRANSLATING NEAR-CIRCULAR HELE-SHAW BUBBLE WITH SURFACE TENSION J. YE1 AND S for any nonzero surface tension despite the fact that a local planar approximation near the front problem, Dissipative equations, Hele-Shaw prob- lem, Translating bubbles, Surface tension Mathematics

Tanveer, Saleh

234

Pitch angle scattering of an energetic magnetized particle by a circularly polarized electromagnetic wave  

E-Print Network [OSTI]

Pitch angle scattering of an energetic magnetized particle by a circularly polarized://pop.aip.org/features/most_downloaded Information for Authors: http://pop.aip.org/authors #12;Pitch angle scattering of an energetic magnetized valley, but for finite mismatch, there can be two valleys separated by a hill. A large pitch angle

Bellan, Paul M.

235

Spatial impulse responses from a flexible baffled circular piston Ronald M. Aartsa)  

E-Print Network [OSTI]

Spatial impulse responses from a flexible baffled circular piston Ronald M. Aartsa) Philips response, Zernike expansion, piston sound radiation, non-uniform profile, loudspeaker, ultrasound 2 #12;I, baffled, planar piston is often done by using the spatial impulse response approach as can be found

236

Design of a Series Fed Circularly Polarized Microstrip Patch Array Lale Alatan  

E-Print Network [OSTI]

Design of a Series Fed Circularly Polarized Microstrip Patch Array Lale Alatan Electrical polarized microstrip patch array operating in S-band (2210 ± 5 MHz) is designed to be used as a sub-array for a ground based antenna receiving signals from a LEO satellite. Slot-coupled square patch antenna is chosen

Alatan, Lale Hayýrlýoðlu

237

Study on the Vibration Displacement Distribution of a Circular Ultrasonic Motor Stator  

E-Print Network [OSTI]

In this paper is presented a theoretical consideration on the stator's displacement distribution, which is one of the most important problems in defining the structure of the circular ultrasonic motor stator. The results are compared with results obtained utilizing holographic interferometer, laser vibrometer and a FEM (finite element method) simulation. They are in a good agreement with each other.

Ri, Chol-Su; Kim, Chol-Su; Im, Song-Jin

2014-01-01T23:59:59.000Z

238

SOLVING BY PARALLEL COMPUTATION THE POISSON PROBLEM FOR HIGH INTENSITY BEAMS IN CIRCULAR ACCELERATORS.  

SciTech Connect (OSTI)

Simulation of high intensity accelerators leads to the solution of the Poisson Equation, to calculate space charge forces in the presence of acceleration chamber walls. We reduced the problem to ''two-and-a-half'' dimensions for long particle bunches, characteristic of large circular accelerators, and applied the results to the tracking code Orbit.

LUCCIO,A.U.; DIMPERIO,N.L.; SAMULYAK,R.; BEEB-WANG,J.

2001-06-18T23:59:59.000Z

239

Condensation heat transfer in square, triangular, and semi-circular mini-channels Melanie Derby a  

E-Print Network [OSTI]

Condensation heat transfer in square, triangular, and semi-circular mini-channels Melanie Derby: Condensation Heat transfer Minichannel Channel shape Correlation a b s t r a c t Condensation heat transfer significant effects on the condensation process, even at lower mass fluxes, while saturation pressure, heat

Peles, Yoav

240

Potential Game Theoretic Attitude Coordination on the Circle: Synchronization and Balanced Circular Formation  

E-Print Network [OSTI]

: "synchronization" and "balanced circular for- mation". We first show that both problems constitute potential games Technological innovations produce cheap and low power smart sensors, wireless communication devices and embed to spatially distributed control systems. For example, [6] uses a mobile sensor network for ocean sampling

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


241

The evolution of circular loops of a cosmic string with periodic tension  

E-Print Network [OSTI]

In this paper the equation of circular loops of cosmic string with periodic tension is investigated in the Minkowski spacetime and Robertson-Walker universe respectively. We find that the cosmic string loops possessing this kind of time-varying tension will evolve to oscillate instead of collapsing to form a black hole if their initial radii are not small enough.

Wang, Leilin

2012-01-01T23:59:59.000Z

242

Configuration Management Plan for Tank Farm Restoration and Safe Operations Project W-314 [CANCELLED  

SciTech Connect (OSTI)

The W-314 configuration management (CM) plan describes the systems, processes and procedures for implementing CM.

MCGREW, D.L.

2001-01-12T23:59:59.000Z

243

Analysis of Natural Gas Fuel Cell Plant Configurations  

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

Analysis of Natur Analysis of Natur al Gas Fuel Cell Plant Configur ations March 24, 2011 DOE/NETL-2011/1486 Analysis of Natur al Gas Fuel Cell Plant Configur ations Disclaimer This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement,

244

Deep Trek Re-configurable Processor for Data Acquisition (RPDA)  

SciTech Connect (OSTI)

This report summarizes technical progress achieved during the cooperative research agreement between Honeywell and U.S. Department of Energy to develop a high-temperature Re-configurable Processor for Data Acquisition (RPDA). The RPDA development has incorporated multiple high-temperature (225C) electronic components within a compact co-fired ceramic Multi-Chip-Module (MCM) package. This assembly is suitable for use in down-hole oil and gas applications. The RPDA module is programmable to support a wide range of functionality. Specifically this project has demonstrated functional integrity of the RPDA package and internal components, as well as functional integrity of the RPDA configured to operate as a Multi-Channel Data Acquisition Controller. This report reviews the design considerations, electrical hardware design, MCM package design, considerations for manufacturing assembly, test and screening, and results from prototype assembly and characterization testing.

Bruce Ohme; Michael Johnson

2009-06-30T23:59:59.000Z

245

D-brane Configurations for Domain Walls and Their Webs  

SciTech Connect (OSTI)

Supersymmetric U(NC) gauge theory with NF massive hypermultiplets in the fundamental representation admits various BPS solitons like domain walls and their webs. In the first part we show as a review of the previous paper that domain walls are realized as kinky fractional D3-branes interpolating between separated D7-branes. In the second part we discuss brane configurations for domain wall webs. This is a contribution to the conference based on the talk given by MN.

Eto, Minoru; Isozumi, Youichi; Nitta, Muneto; Ohashi, Keisuke; Sakai, Norisuke [Department of Physics, Tokyo Institute of Technology, Tokyo 152-8551 (Japan); Ohta, Kazutoshi [Theoretical Physics Laboratory, Institute of Physical and Chemical Research (RIKEN), 2-1 Hirosawa, Wako, Saitama 351-0198 (Japan)

2005-12-02T23:59:59.000Z

246

Advanced configurations for leakage reduction in a labyrinth seal  

E-Print Network [OSTI]

. Stocker (1975) experimentally studied various advanced labyrinth seal configu- rations which reduce leakage by increasing the internal seal cavity turbulence. Air bubbles were used as the visualization medium and turbulence was visually evaluated...ADVANCED CONFIGURATIONS FOR LEAKAGE REDUCTION IN A LABYRINTH SEAL A Thesis by SHARATH B. VELDANDA Submitted to the Office of Graduate Studies of Texas ARM University in partial fulfillment of the requirements for the degree of MASTER...

Veldanda, Sharath B.

2012-06-07T23:59:59.000Z

247

Analytic energy gradients for constrained DFT-configuration interaction  

SciTech Connect (OSTI)

The constrained density functional theory-configuration interaction (CDFT-CI) method has previously been used to calculate ground-state energies and barrier heights, and to describe electronic excited states, in particular conical intersections. However, the method has been limited to evaluating the electronic energy at just a single nuclear configuration, with the gradient of the energy being available only via finite difference. In this paper, we present analytic gradients of the CDFT-CI energy with respect to nuclear coordinates, which gives the potential for accurate geometry optimization and molecular dynamics on both the ground and excited electronic states, a realm which is currently quite challenging for electronic structure theory. We report the performance of CDFT-CI geometry optimization for representative reaction transition states as well as molecules in an excited state. The overall accuracy of CDFT-CI for computing barrier heights is essentially unchanged whether the energies are evaluated at geometries obtained from quadratic configuration-interaction singles and doubles (QCISD) or CDFT-CI, indicating that CDFT-CI produces very good reaction transition states. These results open up tantalizing possibilities for future work on excited states.

Kaduk, Benjamin; Tsuchimochi, Takashi; Van Voorhis, Troy, E-mail: tvan@mit.edu [Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139 (United States)

2014-05-14T23:59:59.000Z

248

Chaotic motion of charged particles in toroidal magnetic configurations  

E-Print Network [OSTI]

We study the motion of a charged particle in a tokamak magnetic field and discuss its chaotic nature. Contrary to most of recent studies, we do not make any assumption on any constant of the motion and solve numerically the cyclotron gyration using Hamiltonian formalism. We take advantage of a symplectic integrator allowing us to make long-time simulations. First considering an idealized magnetic configuration, we add a non generic perturbation corresponding to a magnetic ripple, breaking one of the invariant of the motion. Chaotic motion is then observed and opens questions about the link between chaos of magnetic field lines and chaos of particle trajectories. Second, we return to a axi-symmetric configuration and tune the safety factor (magnetic configuration) in order to recover chaotic motion. In this last setting with two constants of the motion, the presence of chaos implies that no third global constant exists, we highlight this fact by looking at variations of the first order of the magnetic moment in this chaotic setting. We are facing a mixed phase space with both regular and chaotic regions and point out the difficulties in performing a global reduction such as gyrokinetics.

Benjamin Cambon; Xavier Leoncini; Michel Vittot; Rmi Dumont; Xavier Garbet

2014-02-11T23:59:59.000Z

249

Measure Guideline: Optimizing the Configuration of Flexible Duct Junction Boxes  

SciTech Connect (OSTI)

This measure guideline offers additional recommendations to heating, ventilation, and air conditioning (HVAC) system designers for optimizing flexible duct, constant-volume HVAC systems using junction boxes within Air Conditioning Contractors of America (ACCA) Manual D guidance (Rutkowski, H. Manual D -- Residential Duct Systems, 3rd edition, Version 1.00. Arlington, VA: Air Conditioning Contractors of America, 2009.). IBACOS used computational fluid dynamics software to explore and develop guidance to better control the airflow effects of factors that may impact pressure losses within junction boxes among various design configurations (Beach, R., Prahl, D., and Lange, R. CFD Analysis of Flexible Duct Junction Box Design. Golden, CO: National Renewable Energy Laboratory, submitted for publication 2013). These recommendations can help to ensure that a system aligns more closely with the design and the occupants' comfort expectations. Specifically, the recommendations described herein show how to configure a rectangular box with four outlets, a triangular box with three outlets, metal wyes with two outlets, and multiple configurations for more than four outlets. Designers of HVAC systems, contractors who are fabricating junction boxes on site, and anyone using the ACCA Manual D process for sizing duct runs will find this measure guideline invaluable for more accurately minimizing pressure losses when using junction boxes with flexible ducts.

Beach, R.; Burdick, A.

2014-03-01T23:59:59.000Z

250

Room temperature in-plane ?100? magnetic easy axis for Fe{sub 3}O{sub 4}/SrTiO{sub 3}(001):Nb grown by infrared pulsed laser deposition  

SciTech Connect (OSTI)

We examine the magnetic easy-axis directions of stoichiometric magnetite films grown on SrTiO{sub 3}:Nb by infrared pulsed-laser deposition. Spin-polarized low-energy electron microscopy reveals that the individual magnetic domains are magnetized along the in-plane ?100? film directions. Magneto-optical Kerr effect measurements show that the maxima of the remanence and coercivity are also along in-plane ?100? film directions. This easy-axis orientation differs from bulk magnetite and films prepared by other techniques, establishing that the magnetic anisotropy can be tuned by film growth.

Monti, Matteo; Sanz, Mikel; Oujja, Mohamed; Rebollar, Esther; Castillejo, Marta; Marco, Jos F.; Figuera, Juan de la, E-mail: juan.delafiguera@iqfr.csic.es [Instituto de Qumica Fsica Rocasolano, CSIC, Madrid E-28006 (Spain); Pedrosa, Francisco J.; Bollero, Alberto [IMDEA Nanociencia, Instituto Madrileo de Estudios Avanzados en Nanociencia, Madrid E-28049 (Spain); Camarero, Julio; Cuado, Jose Luis F. [IMDEA Nanociencia, Instituto Madrileo de Estudios Avanzados en Nanociencia, Madrid E-28049 (Spain); Dpto. de Fsica de la Materia Condensada, Universidad Autnoma de Madrid, Madrid E-28049 (Spain); Nemes, Norbert M. [Dpto. de Fsica Aplicada III, Universidad Complutense de Madrid, Madrid E-28040 (Spain); Mompean, Federico J.; Garcia-Hernndez, Mar [Instituto de Ciencia de Materiales de Madrid, CSIC, Madrid E-28049 (Spain); Nie, Shu; McCarty, Kevin F. [Sandia National Laboratories, Livermore, California 94550 (United States); N'Diaye, Alpha T.; Chen, Gong; Schmid, Andreas K. [Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)

2013-12-14T23:59:59.000Z

251

PRODUCTION OF LARGE VOLUME CYLINDRICAL RF PLASMA USING CIRCULAR MAGNETIC LINE CUSP FIELD  

Science Journals Connector (OSTI)

A large volume cylindrical rf (radio frequency) plasma source using a circular magnetic line cusp field has been developed for various large scale plasma processings. In this type of plasma source, a capacitively coupled 13.56 \\{MHz\\} rf plasma is produced in a circular magnetic line cusp field. Two versions of the plasma source have been constructed and tasted. The first version has a pair of peripheral rf electrodes placed outside the ionization chamber and is suitable for preparing a large volume uniform plasma. This plasma source can attain uniformity within 107 cm?3 over a 30 cm diameter region. The other which is provided with parallel doughnut plate electrodes forming part of the chamber wall serves as a high current plasma source, where the electron density is proportional to the rf power and equal to 7 109 cm?3 for 500 W.

K. YAMAUCHI; M. SHIBAGAKI; A. KONO; K. TAKAHASHI; T. SHEBUYA; E. YABE; K. TAKAYAMA

1993-01-01T23:59:59.000Z

252

Global existence for a translating near-circular Hele-Shaw bubble with surface tension  

E-Print Network [OSTI]

This paper is concerned with proving global existence and stability of a translating bubble in a Hele-Shaw cell that is small relative to cell width. When the ratio of cell width to bubble dimension is sufficient large, the equations admit the steady translating near-circular bubble shape. We are concerned with global existence with the initial condition close to this steady shape. When the cell side walls effects are negligible, we show that the translating circular bubble is asymptotically stable for nonzero surface tension. With side walls effects, we obtain similar results for bubble shapes symmetric about the channel centerline. As with our prior work, we exploit a boundary integral approach that allows for a finite nonzero viscosity ratio between fluid inside and outside the bubble.

Ye, J

2009-01-01T23:59:59.000Z

253

First measurement of the circular beam asymmetry in the gamma p --> pi0 eta p reaction  

E-Print Network [OSTI]

The circular photon asymmetry for pi0 eta photoproduction on the proton was measured for the first time at the tagged photon facility of the MAMI C accelerator using the Crystal Ball/TAPS photon spectrometer. The experimental results are interpreted within a phenomenological isobar model that confirms the dominant role of the Delta(1700)D33 resonance. The measured asymmetry allows us to identify small contributions from positive-parity resonances via interference terms with the dominant D33 amplitude.

V. L. Kashevarov; A. Fix; P. Aguar-Bartolom; L. K. Akasoy; J. R. M. Annand; H. J. Arends; K. Bantawa; R. Beck; V. Bekrenev; H. Berghuser; A. Braghieri; D. Branford; W. J. Briscoe; J. Brudvik; S. Cherepnya; R. F. B. Codling; B. T. Demissie; E. J. Downie; P. Drexler; L. V. Fil'kov; D. I. Glazier; R. Gregor; D. Hamilton; E. Heid; D. Hornidge; I. Jaegle; O. Jahn; T. C. Jude; J. D. Kellie; I. Keshelashvili; R. Kondratiev; M. Korolija; M. Kotulla; A. Koulbardis; S. Kruglov; B. Krusche; V. Lisin; K. Livingston; I. J. D. MacGregor; Y. Maghrbi; D. M. Manley; M. Martinez-Fabregate; J. C. McGeorge; E. F. McNicoll; D. Mekterovic; V. Metag; S. Micanovic; D. Middleton; A. Mushkarenkov; B. M. K. Nefkens; A. Nikolaev; R. Novotny; M. Ostrick; P. B. Otte; B. Oussena; P. Pedroni; F. Pheron; A. Polonski; S. N. Prakhov; J. Robinson; G. Rosner; T. Rostomyan; S. Schumann; M. H. Sikora; D. Sober; A. Starostin; I. I. Stakovsky; I. M. Suarez; I. Supek; C. Tarbert; M. Thiel; A. Thomas; M. Unverzagt; D. P. Watts; D. Werthmller; I. Zamboni; F. Zehr.

2010-09-24T23:59:59.000Z

254

Failure determination for a laminated composite plate with a circular hole  

E-Print Network [OSTI]

be predicted for graphite-epoxy laminated composite systems containing a 3/16-inch circular hole from strain energy intensity determinations. The strain energy release rates (G ) for composite systems and indi- c vidual plies outline the crack propagation... of Unidirectional Graphite/Epoxy Laminate 23 Stiffness and Compliance Matrices for Laminate 24 Roots of Characteristic Equation Maximum Stress Concentrations 46 Maximum Laminate Stress Concentrations Crack Initiation Stress 47 Laminate Strain Energy Release...

Ko, Chi-Ren Clarence

2012-06-07T23:59:59.000Z

255

Static detectors and circular-geodesic detectors on the Schwarzschild black hole  

E-Print Network [OSTI]

We examine the response of an Unruh-DeWitt particle detector coupled to a massless scalar field on the (3+1)-dimensional Schwarzschild spacetime, in the Boulware, Hartle-Hawking and Unruh states, for static detectors and detectors on circular geodesics, by primarily numerical methods. For the static detector, the response in the Hartle-Hawking state exhibits the known thermality at the local Hawking temperature, and the response in the Unruh state is thermal at the local Hawking temperature in the limit of a large detector energy gap. For the circular-geodesic detector, we find evidence of thermality in the limit of a large energy gap for the Hartle-Hawking and Unruh states, at a temperature that exceeds the Doppler-shifted local Hawing temperature. Detailed quantitative comparisons between the three states are given. The response in the Hartle-Hawking state is compared with the response in the Minkowski vacuum and in the Minkowski thermal state for the corresponding Rindler, drifted Rindler, and circularly accelerated trajectories. The analysis takes place within first-order perturbation theory and relies in an essential way on stationarity.

Lee Hodgkinson; Jorma Louko; Adrian C. Ottewill

2014-05-05T23:59:59.000Z

256

Nonlinear coupling of left and right handed circularly polarized dispersive Alfvn wave  

SciTech Connect (OSTI)

The nonlinear phenomena are of prominent interests in understanding the particle acceleration and transportation in the interplanetary space. The ponderomotive nonlinearity causing the filamentation of the parallel propagating circularly polarized dispersive Alfvn wave having a finite frequency may be one of the mechanisms that contribute to the heating of the plasmas. The contribution will be different of the left (L) handed mode, the right (R) handed mode, and the mix mode. The contribution also depends upon the finite frequency of the circularly polarized waves. In the present paper, we have investigated the effect of the nonlinear coupling of the L and R circularly polarized dispersive Alfvn wave on the localized structures formation and the respective power spectra. The dynamical equations are derived in the presence of the ponderomotive nonlinearity of the L and R pumps and then studied semi-analytically as well as numerically. The ponderomotive nonlinearity accounts for the nonlinear coupling between both the modes. In the presence of the adiabatic response of the density fluctuations, the nonlinear dynamical equations satisfy the modified nonlinear Schrdinger equation. The equations thus obtained are solved in solar wind regime to study the coupling effect on localization and the power spectra. The effect of coupling is also studied on Faraday rotation and ellipticity of the wave caused due to the difference in the localization of the left and the right modes with the distance of propagation.

Sharma, R. P., E-mail: rpsharma@ces.iitd.ac.in; Sharma, Swati, E-mail: swati.sharma704@gmail.com; Gaur, Nidhi, E-mail: nidhiphysics@gmail.com [Centre for Energy Studies, Indian Institute of Technology Delhi, New Delhi 110016 (India)

2014-07-15T23:59:59.000Z

257

Synchrotron Radiation Circular Dichroism (SRCD) Spectroscopy - An Enhanced Method for Examining Protein Conformations and Protein Interactions  

SciTech Connect (OSTI)

CD (circular dichroism) spectroscopy is a well-established technique in structural biology. SRCD (synchrotron radiation circular dichroism) spectroscopy extends the utility and applications of conventional CD spectroscopy (using laboratory-based instruments) because the high flux of a synchrotron enables collection of data at lower wavelengths (resulting in higher information content), detection of spectra with higher signal-to-noise levels and measurements in the presence of absorbing components (buffers, salts, lipids and detergents). SRCD spectroscopy can provide important static and dynamic structural information on proteins in solution, including secondary structures of intact proteins and their domains, protein stability, the differences between wild-type and mutant proteins, the identification of natively disordered regions in proteins, and the dynamic processes of protein folding and membrane insertion and the kinetics of enzyme reactions. It has also been used to effectively study protein interactions, including protein-protein complex formation involving either induced-fit or rigid-body mechanisms, and protein-lipid complexes. A new web-based bioinformatics resource, the Protein Circular Dichroism Data Bank (PCDDB), has been created which enables archiving, access and analyses of CD and SRCD spectra and supporting metadata, now making this information publicly available. To summarize, the developing method of SRCD spectroscopy has the potential for playing an important role in new types of studies of protein conformations and their complexes.

B Wallace; R Janes

2011-12-31T23:59:59.000Z

258

Separation of sheet flow on the surface of a circular cylinder  

Science Journals Connector (OSTI)

The shape of a spout of a pot is very important for the liquid to flow smoothly from the pot. This is known as the teapot effect. Separation of flow must take place at the tip of the spout. Separation of sheet flow on the surface of a circular cylinder may provide an explanation as to why pot spouts have such a unique shape. As can be easily observed by a simple experiment separation of sheet flow from the surface of a circular cylinder is a very interesting phenomenon beyond intuition. In the nonviscous case the flow released at the top of the surface may proceed completely around the surface and come back to the flow start point without separation. In the present paper effects of gravity and viscosity on sheet flow are theoretically explained and the theory is verified by experiments. The results of the theoretical model proposed in the present study were very similar to the experimental measurements. In the present study the effects of viscosity on sheet flow on a circular cylinder the location of flow separation and other associated responses were investigated.

Hiroshi Isshiki; Bum-Sang Yoon; Deuk-Joon Yum

2009-01-01T23:59:59.000Z

259

Characterization of syngas laminar flames using the Bunsen burner configuration  

Science Journals Connector (OSTI)

Laminar flame speeds of syngas mixtures (H2/CO/Air) have been studied using the Bunsen flame configuration with both straight and nozzle burners. The flame surface area and flame cone angle methodologies, respectively based on the OH* chemiluminescence and Schlieren imaging techniques, have been performed to extract flame speeds for a wide range ofequivalence ratios (0.3syngas flames with 0.6

N. Bouvet; C. Chauveau; I. Gkalp; S.-Y. Lee; R.J. Santoro

2011-01-01T23:59:59.000Z

260

Vortex configurations of bosons in an optical lattice  

SciTech Connect (OSTI)

The single-vortex problem in a strongly correlated bosonic system is investigated self-consistently within the mean-field theory of the Bose-Hubbard model. Near the superfluid-Mott-insulator transition, the vortex core has a tendency toward the Mott-insulating phase, with the core particle density approaching the nearest commensurate value. If the nearest-neighbor repulsion exists, the charge-density wave order may develop locally in the core. The evolution of the vortex configuration from the strong- to weak-coupling regions is studied. This phenomenon can be observed in systems of rotating ultracold atoms in optical lattices and Josephson-junction arrays.

Wu Congjun; Zhang Shoucheng [Department of Physics, McCullough Building, Stanford University, Stanford, California 94305-4045 (United States); Chen Handong [Department of Applied Physics, McCullough Building, Stanford University, Stanford, California 94305-4045 (United States); Hu Jiangpiang [Department of Physics and Astronomy, University of California, Los Angeles, California 90095-1547 (United States)

2004-04-01T23:59:59.000Z

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


261

Wing in surface effect ship with canard configuration  

Science Journals Connector (OSTI)

Wing in surface effect ship (WISES) is a high-speed ship which supports its weight with an aerodynamic wing in very low altitude flight. The ship utilises the enhanced performance of wing in proximity to the water, according to the same mechanism as ground effect. The authors propose a canard-type WISES as a suitable concept for commercialisation. This concept has many advantages for conventional airplane-like configurations, especially for taking off and alighting on water. This paper describes the canard concept, its self-propulsion model tests and the preliminary designs for actual ships.

Hiromichi Akimoto; Syozo Kubo; Makoto Kanehira

2010-01-01T23:59:59.000Z

262

Reconnection during the implosion phase of field reversed configurations  

SciTech Connect (OSTI)

Magnetic field topology changes in Field Reversed Configurations (FRC's) are essential for the formation and containment of the plasma. A significant part of the FRC research program relies upon the idea that a newly formed plasma, formed on open field lines will quickly change field topology before the rapid parallel electron thermal conduction depletes the plasma energy. We have simulated the implosion dynamics of FRC formation using an axisymmetric hybrid model consisting of kinetic ions and finite resistivity fluid electrons. The LASL FRC experiments are well described by our model, which assumes quasineutrality, zero electron inertia, and no electromagnetic radiation.

Hewett, D.W.; Seyler, C.E.

1980-01-01T23:59:59.000Z

263

Quasi-isodynamic Configuration With N = 12 and High {beta}  

SciTech Connect (OSTI)

Results of an optimization toward quasi-isodynamicity for a stellarator with a comparatively large number of periods, N = 12, are presented. The following set of physics properties to be achieved was used: 1) good long-time collisionless confinement of {alpha}-particles; 2) small neoclassical transport in the 1/{nu} regime; 3) small bootstrap current; 4) high stability-{beta} limit. As a result, the boundary magnetic surface of a configuration is found that satisfies the above requirements for <{beta}> {approx_equal} 20%.

Mikhailov, M. I.; Isaev, M. Yu.; Subbotin, A. A.; Shafranov, V. D. [Russian Research Centre 'Kurchatov Institute', Moscow (Russian Federation); Nuehrenberg, C.; Nuehrenberg, J.; Zille, R. [Max-Planck-Institut fuer Plasmaphysik, IPP-EURATOM Association (Germany); Cooper, A. [CRPP, Association Euratom-Confederation Suisse, EPFL, Lausanne (Switzerland)

2006-11-30T23:59:59.000Z

264

Mac configuration management at the Los Alamos National Laboratory  

SciTech Connect (OSTI)

The Los Alamos National Laboratory (LANL) had a need for central configuration management of non-Windows computers. LANL has three to five thousand Macs and an equal number of Linux based systems. The primary goal was to be able to inventory all non-windows systems and patch Mc OS X systems. LANL examined a number of commercial and open source solutions and ultimately selected Puppet. This paper will discuss why we chose Puppet, how we implemented it, and some lessons we learned along the way.

Marcus, Allan B [Los Alamos National Laboratory

2010-01-01T23:59:59.000Z

265

An analytic solution for a fault tree with circular logics in which the systems are linearly interrelated  

Science Journals Connector (OSTI)

A circular logic or a logical loop is defined as the infinite circulation of supporting relations due to their mutual dependencies among the systems in the fault tree analysis. While many methods to break the circular logic have been developed and used in the fault tree quantification codes, the general solution for a circular logic is not generally known as yet. This paper presents an analytic solution for circular logics in which the systems are linearly interrelated with each other. To formulate the analytic solution, the relations among systems in the fault tree structure are described by the Boolean equations. The solution is, then, obtained from the successive substitutions of the Boolean equations, which is equivalent to the attaching processes of interrelated system's fault tree to a given fault tree. The solution for three interrelated systems and their independent fault tree structures are given as an example.

Ho-Gon Lim; Seung-Cheol Jang

2007-01-01T23:59:59.000Z

266

Investigation of the effect of a circular patch of vegetation on turbulence generation and sediment deposition using four case studies  

E-Print Network [OSTI]

This study describes the spatial distribution of sediment deposition in the wake of a circular patch of model vegetation and the effect of the patch on turbulence and mean flow. Two difference types pf vegetation were used ...

Ortiz, Alejandra C

2012-01-01T23:59:59.000Z

267

Imaging photoelectron circular dichroism of chiral molecules by femtosecond multiphoton coincidence detection  

SciTech Connect (OSTI)

Here, we provide a detailed account of novel experiments employing electron-ion coincidence imaging to discriminate chiral molecules. The full three-dimensional angular scattering distribution of electrons is measured after photoexcitation with either left or right circular polarized light. The experiment is performed using a simplified photoelectron-photoion coincidence imaging setup employing only a single particle imaging detector. Results are reported applying this technique to enantiomers of the chiral molecule camphor after three-photon ionization by circularly polarized femtosecond laser pulses at 400 nm and 380 nm. The electron-ion coincidence imaging provides the photoelectron spectrum of mass-selected ions that are observed in the time-of-flight mass spectra. The coincident photoelectron spectra of the parent camphor ion and the various fragment ions are the same, so it can be concluded that fragmentation of camphor happens after ionization. We discuss the forward-backward asymmetry in the photoelectron angular distribution which is expressed in Legendre polynomials with moments up to order six. Furthermore, we present a method, similar to one-photon electron circular dichroism, to quantify the strength of the chiral electron asymmetry in a single parameter. The circular dichroism in the photoelectron angular distribution of camphor is measured to be 8% at 400 nm. The electron circular dichroism using femtosecond multiphoton excitation is of opposite sign and about 60% larger than the electron dichroism observed before in near-threshold one-photon ionization with synchrotron excitation. We interpret our multiphoton ionization as being resonant at the two-photon level with the 3s and 3p Rydberg states of camphor. Theoretical calculations are presented that model the photoelectron angular distribution from a prealigned camphor molecule using density functional theory and continuum multiple scattering X alpha photoelectron scattering calculations. Qualitative agreement is observed between the experimental results and the theoretical calculations of the Legendre moments representing the angular distribution for the two enantiomers. The electron-ion coincidence technique using multiphoton ionization opens new directions in table-top analytical mass-spectrometric applications of mixtures of chiral molecules.

Lehmann, C. Stefan; Ram, N. Bhargava; Janssen, Maurice H. M., E-mail: m.h.m.janssen@vu.nl [LaserLaB Amsterdam, VU University Amsterdam, De Boelelaan 1081, 1081 HV Amsterdam (Netherlands)] [LaserLaB Amsterdam, VU University Amsterdam, De Boelelaan 1081, 1081 HV Amsterdam (Netherlands); Powis, Ivan [School of Chemistry, University of Nottingham, Nottingham NG7 2RD (United Kingdom)] [School of Chemistry, University of Nottingham, Nottingham NG7 2RD (United Kingdom)

2013-12-21T23:59:59.000Z

268

Shaft Siting and Configuration for Flexible Operating Mode  

SciTech Connect (OSTI)

The purpose of this document as stated in the ''Technical Work Plan for Subsurface Design Section FY 01 Work Activities'' (CRWMS M&O 2001a, pg. 14) is to review and evaluate the most current concepts for shaft siting and configuration. The locations of the shaft sites will be evaluated in reference to the overall subsurface ventilation layout shown in Figure 1. The scope will include discussions on pad size requirements, shaft construction components such as collars, shaft stations, sumps, ground support and linings, head frames, fan ducting and facility equipping. In addition to these, shaft excavation methodologies and integration with the overall subsurface construction schedule will be described. The Technical Work Plan (TWP), (CRWMS M&O 2001a), for this document has been prepared in accordance with AP-2.21Q, ''Quality Determinations and Planning for Scientific, Engineering and Regulatory Compliance Activities''. This document will be prepared in accordance with AP-3.10Q, ''Analysis and Models''. This document contributes to Site Recommendation (SR). The intended use of this document is to provide an analysis for shaft siting and configuration criteria for subsequent construction. This document identifies preliminary design concepts that should not be used for procurement, fabrication, or construction.

Robert Boutin

2001-08-02T23:59:59.000Z

269

Electrostatic spherically symmetric configurations in gravitating nonlinear electrodynamics  

SciTech Connect (OSTI)

We perform a study of the gravitating electrostatic spherically symmetric (G-ESS) solutions of Einstein field equations minimally coupled to generalized nonlinear Abelian gauge models in three space dimensions. These models are defined by Lagrangian densities which are general functions of the gauge field invariants, restricted by some physical conditions of admissibility. They include the class of nonlinear electrodynamics supporting electrostatic spherically symmetric (ESS) nontopological soliton solutions in absence of gravity. We establish that the qualitative structure of the G-ESS solutions of admissible models is fully characterized by the asymptotic and central-field behaviors of their ESS solutions in flat space (or, equivalently, by the behavior of the Lagrangian densities in vacuum and on the point of the boundary of their domain of definition, where the second gauge invariant vanishes). The structure of these G-ESS configurations for admissible models supporting divergent-energy ESS solutions in flat space is qualitatively the same as in the Reissner-Nordstroem case. In contrast, the G-ESS configurations of the models supporting finite-energy ESS solutions in flat space exhibit new qualitative features, which are discussed in terms of the Arnowitt-Deser-Misner mass, the charge, and the soliton energy. Most of the results concerning well-known models, such as the electrodynamics of Maxwell, Born-Infeld, and the Euler-Heisenberg effective Lagrangian of QED, minimally coupled to gravitation, are shown to be corollaries of general statements of this analysis.

Diaz-Alonso, J.; Rubiera-Garcia, D. [LUTH, Observatoire de Paris, CNRS, , USAUniversite Paris Diderot, 5 Place Jules Janssen, 92190 Meudon (France) and Departamento de Fisica, Universidad de Oviedo, Avda. Calvo Sotelo 18, E-33007 Oviedo, Asturias (Spain)

2010-03-15T23:59:59.000Z

270

The high-voltage substation configuration influence on the estimated lightning performance  

Science Journals Connector (OSTI)

The substation configuration has a great influence on the ... at the lines connected in front of the substations. In most of the analyses the critical substation configuration is assumed with only one connected ....

Z. Stojkovi?; M. S. Savi?

1997-08-01T23:59:59.000Z

271

Configure Microsoft Outlook 2011 for Mac HMS Help Desk: (617) 432-2000  

E-Print Network [OSTI]

Configure Microsoft Outlook 2011 for Mac HMS Help Desk: (617) 432 "Import". #12;Configure Microsoft Outlook 2011 for Mac HMS Help Desk Outlook 2011 for Mac HMS Help Desk: (617) 432-2000 3 · Select

Blackwell, Keith

272

Configure Microsoft Outlook 2011 for Mac HMS Help Desk: (617) 432-2000  

E-Print Network [OSTI]

Configure Microsoft Outlook 2011 for Mac HMS Help Desk: (617) 432 2011 for Mac HMS Help Desk: (617) 432-2000 2 · Create a new". #12;Configure Microsoft Outlook 2011 for Mac HMS Help Desk: (617) 432

Blackwell, Keith

273

Steady-state and equilibrium vortex configurations, transitions, and evolution in a mesoscopic superconducting cylinder  

E-Print Network [OSTI]

that the system passes through nearly metastable intermediate configurations while seeking the final minimum-energy steady state consistent with the square symmetry of the sample. An efficient scheme to determine the equilibrium vortex configuration in a...

Kim, S.; Hu, Chia-Ren; Andrews, MJ.

2004-01-01T23:59:59.000Z

274

Interface and process for enhanced transmission of non-circular ion beams between stages at unequal pressure  

DOE Patents [OSTI]

The invention discloses a new interface with non-circular conductance limit aperture(s) useful for effective transmission of non-circular ion beams between stages with different gas pressure. In particular, the invention provides an improved coupling of field asymmetric waveform ion mobility spectrometry (FAIMS) analyzers of planar or side-to-side geometry to downstream stages such as mass spectrometry or ion mobility spectrometry. In this case, the non-circular aperture is rectangular; other geometries may be optimum in other applications. In the preferred embodiment, the non-circular aperture interface is followed by an electrodynamic ion funnel that may focus wide ion beams of any shape into tight circular beams with virtually no losses. The jet disrupter element of the funnel may also have a non-circular geometry, matching the shape of arriving ion beam. The improved sensitivity of planar FAIMS/MS has been demonstrated in experiments using a non-contiguous elongated aperture but other embodiments (e.g., with a contiguous slit aperture) may be preferable, especially in conjunction with an ion funnel operated at high pressures.

Tang, Keqi (Richland, WA); Shvartsburg, Alexandre A. (Richland, WA); Smith, Richard D. (Richland, WA)

2008-03-04T23:59:59.000Z

275

Configuration Management Plan for Tank Farm Restoration and Safe Operations Project W-314  

SciTech Connect (OSTI)

The Configuration Management Plan for Project W-314 describes the systems, processes and procedures for implementation of applicable configuration management practices described in HNF-0842, Volume 111, Section 3.1, ''Configuration Management Implementation''. This plan is tailored specifically for use by Project W-314.

MCGREW, D.L.

2000-04-19T23:59:59.000Z

276

A Framework for Rapid Development of Advanced Web-based Configurator Applications  

E-Print Network [OSTI]

¨ucken, Germany from configurable sub-products supplied by highly-specialised providers. Due to organisational successfully applied in industrial environments. These systems support the configuration of complex products as well as distributed configuration of products in a supply chain. The developed tools and techniques

Ardissono, Liliana

277

APPLICATION OF NONSPHERICAL FISSILE CONFIGURATION IN WASTE CONTAINERS AT SRS  

SciTech Connect (OSTI)

Transuranic (TRU) solid waste that has been generated as a result of the production of nuclear material for the United States defense program at the Savannah River Site (SRS) has been stored in more than 30,000 55-gallon drums and carbon steel boxes since 1953. Nearly two thirds of those containers have been processed and shipped to the Waste Isolation Pilot Plant. Among the containers assayed so far, the results indicate several drums with fissile inventories significantly higher (600-1000 fissile grams equivalent (FGE) {sup 239}Pu) than their original assigned values. While part of this discrepancy can be attributed to the past limited assay capabilities, human errors are believed to be the primary contributor. This paper summarizes the application of nonspherical fissile material configuration in waste containers, resulting in less restrictive mass and spacing limits, increased storage capacity, and several administrative controls for handling and storage of waste containers being modified without compromising safety.

Eghbali, D; Michelle Abney, M

2007-01-03T23:59:59.000Z

278

Diquark condensation effects on hot quark star configurations  

E-Print Network [OSTI]

The equation of state for quark matter is derived for a nonlocal, chiral quark model within the mean field approximation. We investigate the effects of a variation of the form factors of the interaction on the phase diagram of quark matter under the condition of beta-equilibrium and charge neutrality. Special emphasis is on the occurrence of a diquark condensate which signals a phase transition to color superconductivity and its effects on the equation of state. We calculate the quark star configurations by solving the Tolman- Oppenheimer- Volkoff equations and obtain for the transition from a hot, normal quark matter core of a protoneutron star to a cool diquark condensed one a release of binding energy of the order of Delta M c^2 ~ 10^{53} erg. We discuss the claim that this energy could serve as an engine for explosive phenomena.

Blaschke, David B; Grigorian, H

2004-01-01T23:59:59.000Z

279

THERMAL PERFORMANCE OF RADIOACTIVE MATERIAL PACKAGES IN TRANSPORT CONFIGURATION  

SciTech Connect (OSTI)

Drum type packages are routinely used to transport radioactive material (RAM) in the U.S. Department of Energy (DOE) complex. These packages are designed to meet the federal regulations described in 10 CFR Part 71. The packages are transported in specially designed vehicles like Safe Secure Transport (SST) for safety and security. In the transport vehicles, the packages are placed close to each other to maximize the number of units in the vehicle. Since the RAM contents in the packagings produce decay heat, it is important that they are spaced sufficiently apart to prevent overheating of the containment vessel (CV) seals and the impact limiter to ensure the structural integrity of the package. This paper presents a simple methodology to assess thermal performance of a typical 9975 packaging in a transport configuration.

Gupta, N.

2010-03-04T23:59:59.000Z

280

(f72)-3 configuration states in Ca45  

Science Journals Connector (OSTI)

The Ca48(He3, He6)Ca45 reaction has been studied at 70 MeV bombarding energy and angular distributions to strongly populated states in Ca45 up to 5 MeV of excitation have been obtained. Evidence for (f72)-3 configuration states at 0.17, 1.43, 1.56, 1.89, and 2.88 MeV is discussed. The experimental (f72)-3 spectrum is compared with calculations based on the (f72)-2 spectrum of Ca46.NUCLEAR REACTIONS Ca48(He3, He)6, E3He=70 MeV, measured (E6He,?); enriched target, deduced excitation energies.

H. Nann; D. Mueller; E. Kashy

1976-12-01T23:59:59.000Z

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


281

Brueckner's Theory and the Method of Superposition of Configurations  

Science Journals Connector (OSTI)

The method of superposition of configurations, which provides a general solution of the quantum-mechanical many-particle problem (for fermions), is reformulated so that equations may be compared with those used in the Brueckner theory. Important differences occur in application to finite or nonuniform systems for which the Hartree-Fock or Brueckner self-consistent orbitals are not plane waves. In such cases nonvanishing single-particle matrix elements occur which cannot be described by the Brueckner formalism based on a two-particle operator. Equations for an effective two-particle operator, equivalent to the variational equations of the method of superposition of configurations, are derived for a basis of Hartree-Fock orbitals. At the expense of making the orbital basis dependent upon the effective two-particle operator, the orbital basis can be determined by a condition which is essentially that of the Brueckner method. This condition removes a class of matrix elements which do not necessarily vanish in the Hartree-Fock basis although they would be neglected to second order in a perturbation calculation starting from the Hartree-Fock wave function. The equations for the effective two-particle operator are formally the same in both cases but lead to different operators because of the different choice of basis. In neither case can the equations be written in terms of products of such operators, a formalism assumed in the Brueckner theory. It is shown that the Brueckner condition is not equivalent to the condition which would determine the best possible orbital basis for the form of wave function implied by the use of an effective operator dependent on two particles only. The argument of the present paper is limited to systems with a finite number of particles, since the variational principle used here is not applicable without modification to systems with an infinite number of particles.

R. K. Nesbet

1958-03-01T23:59:59.000Z

282

Performance characterization of different configurations of gas turbine engines  

Science Journals Connector (OSTI)

Abstract This paper investigates the performance of different configurations of gas turbine engines. A full numerical model for the engine is built. This model takes into account the variations in specific heat and the effects of turbine cooling flow. Also, the model considers the efficiencies of all component, effectiveness of heat exchangers and the pressure drop in relevant components. The model is employed to compare the engine performances in cases of employing intercooler, recuperation and reheat on a single spool gas turbine engine. A comparison is made between single-spool engine and two-spool engine with free power turbine. Also, the performance of the engine with inter-stage turbine burner is investigated and compared with engine employing the nominal reheat concept. The engine employing inter-stage turbine burners produces superior improvements in both net work and efficiency over all other configurations. The effects of ignoring the variations on specific heat of gases and turbine cooling flow on engine performance are estimated. Ignoring the variation in specific heat can cause up to 30% difference in net specific work. The optimum locations of the intercooler and the reheat combustor are determined using the numerical model of the engine. The maximum net specific work is obtained if the reheat combustor is placed at 40% of the expansion section. On the other hand, to get maximum efficiency the reheat combustor has to be placed at nearly 10%-20% of the expansion section. The optimum location of the intercooler is almost at 50% of the compression section for both maximum net specific work and efficiency.

Tarek Nada

2014-01-01T23:59:59.000Z

283

Neutron production from ultrashort pulse lasers using linear and circular polarization  

SciTech Connect (OSTI)

An implicit 2D3V particle-in-cell code is used to study proton and deuteron acceleration from an ultrathin CD foil with thickness between 20 and 200 nm using linear and circular polarization. The proton and deuteron beams drive nuclear fusion reactions from converter foils in a pitcher-catcher set-up. The neutron yield for three representative reactions d - d, d - Li, and p - Li has been calculated analytically using the total neutron production cross section and ion stopping power. For linear polarization, maximum normalized neutron yield of Y{sub d-d}=3.4x10{sup 6}, Y{sub d-Li}=3.2x10{sup 7}, and Y{sub p-Li}=6.8x10{sup 6} neutrons/J laser energy has been calculated at the optimum foil thickness of 50 nm. For circular polarization, the optimum foil thickness is 20 nm, for which the corresponding neutron yields are Y{sub d-d}=1.9x10{sup 6}, Y{sub d-Li}=2.0x10{sup 7}, and Y{sub p-Li}=2.7x10{sup 6}, respectively. The laser polarization strongly affects the neutron production; for our regime, i.e., intensity I=1x10{sup 21} W/cm{sup 2}, pulse duration {tau}{sub FWHM}=30 fs, and laser energy {epsilon}{sub laser}=3.8 J, both the conversion efficiency of laser energy into ion kinetic energy and neutron yield are higher for linear polarization. Only for ultrathin ({approx}20 nm) foils in the radiation pressure acceleration regime, circular and linear polarizations yield comparable results.

Davis, J.; Petrov, G. M. [Naval Research Laboratory, Plasma Physics Division, 4555 Overlook Ave. SW, Washington, DC 20375 (United States)

2011-07-15T23:59:59.000Z

284

Summary Description Federal Acquisition Circular 2005-58 Federal Acquisition Regulation Amendments  

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

Description Description Federal Acquisition Circular 2005-58 Federal Acquisition Regulation Amendments Published in the Federal Register April 18, 2012 Page 23364 ----------------------------------------------------------------------- I. Biobased Procurements FAR Case 2010-004 II. Representation Regarding Export of Sensitive Technology to Iran FAR Case 2010-018 III. Justification and Approval of Sole-Source 8(a) Contracts FAR Case 2009-038 IV. Technical Amendments ----------------------------------------------------------------------------- Item I--Biobased Procurements (FAR Case 2010-004) This final rule amends the FAR to implement changes that require contractors to report the biobased products purchased under service and construction contracts. The Farm Security and Rural Investment Act (7 U.S.C.

285

Self-focusing of circularly polarized laser pulse propagating through a magnetized non-Maxwellian plasma  

SciTech Connect (OSTI)

Self-focusing of an intense circularly polarized laser pulse propagating through a magnetized non-Maxwellian plasma is investigated. Based on a relativistic two-fluid model, nonlinear equation describing dynamics of the slowly varying amplitude is obtained. The evolution of laser spot size is studied and effect of non-Maxwellian distribution of charge density on the spot size is considered. It is shown that the existence of super-thermal particles leads to the enhancement of the self-focusing quality of plasma.

Sepehri Javan, N., E-mail: sepehri-javan@uma.ac.ir [Department of physics, University of Mohaghegh Ardabili, PO Box 179, Ardabil (Iran, Islamic Republic of)

2014-10-15T23:59:59.000Z

286

Nonlinear dissipation of circularly polarized Alfven waves due to the beam-induced obliquely propagating waves  

SciTech Connect (OSTI)

In the present study, the dissipation processes of circularly polarized Alfven waves in solar wind plasmas including beam components are numerically discussed by using a 2-D hybrid simulation code. Numerical results suggest that the parent Alfven waves are rapidly dissipated due to the presence of the beam-induced obliquely propagating waves, such as kinetic Alfven waves. The nonlinear wave-wave coupling is directly evaluated by using the induction equation for the parent wave. It is also observed both in the 1-D and 2-D simulations that the presence of large amplitude Alfven waves strongly suppresses the beam instabilities.

Nariyuki, Y. [Faculty of Human Development, University of Toyama, 3190, Toyama City, Toyama 930-8555 (Japan); Hada, T. [Department of Earth System Science and Technology, Kyushu University, 6-1, Kasuga City, Fukuoka 816-8580 (Japan); Tsubouchi, K. [Department of Earth and Planetary Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033 (Japan)

2012-08-15T23:59:59.000Z

287

Analysis of three idealized reactor configurations: plate, pin, and homogeneous. [LMFBR  

SciTech Connect (OSTI)

Detailed Monte Carlo calculations have been performed for three distinct configurations of an idealized fast critical assembly. This idealized assembly was based on the LMFBR benchmark critical assembly ZPR-6/7. In the first configuration, the entire core was loaded with the plate unit cell of ZPR-6/7. In the second configuration, the entire core was loaded with the ZPR sodium-filled pin calandria. The actual ZPR pin calandria are loaded with mixed (U,Pu) oxide pins which closely match the composition of the ZPR-6/7 plate unit cell. For the present study, slight adjustments were made in the atom concentrations and the length of the pin calandria in order to make the core boundaries and average composition for the pin-cell configuration identical to those of the plate-cell configuration. In the third configuration, the core was homogeneous, again with identical core boundaries and average composition as the plate and pin configurations.

McKnight, R.D.

1983-01-01T23:59:59.000Z

288

Irregular Magnetic Fields in Interstellar Clouds and Variations in the Observed Circular Polarization of Spectral Lines  

E-Print Network [OSTI]

The strengths of magnetic fields in interstellar gas clouds are obtained through observations of the circular polarization of spectral line radiation. Irregularities in this magnetic field may be present due to turbulence, waves or perhaps other causes, and may play an essential role in the structure and evolution of the gas clouds. To infer information about these irregularities from the observational data, we develop statistical relationships between the rms values of the irregular component of the magnetic field and spatial variations in the circular polarization of the spectral line radiation. The irregularities are characterized in analogy with descriptions of turbulence---by a sum of Fourier waves having a power spectrum with a slope similar to that of Kolmogorov turbulence. For comparison, we also perform computations in which turbulent magnetic and velocity fields from representative MHD simulations by others are utilized. Although the effects of the variations about the mean value of the magnetic field along the path of a ray tend to cancel, a significant residual effect in the polarization of the emergent radiation remains for typical values of the relevant parameters. A map of observed spectra of the 21 cm line toward Orion A is analyzed and the results are compared with our calculations in order to infer the strength of the irregular component of the magnetic field. The rms of the irregular component is found to be comparable in magnitude to the mean magnetic field within the cloud. Hence, the turbulent and Alfven velocities should also be comparable.

W. D. Watson; D. S. Wiebe; R. M. Crutcher

2000-10-13T23:59:59.000Z

289

On the application of circularcylindrical waves to ocean wave power absorption  

Science Journals Connector (OSTI)

This study derives mathematical forms for the waves radiated from a heaving, surging and swaying point source on the surface of a three dimensional ocean. The interactions between a monochromatic plane wave and monochromatic circularcylindrical radiated waves are examined, and solutions to the time averaged power are calculated. These calculations confirm pre-existing theoretical maximum absorption lengths for both a heaving and surging point source. The derivations also lead to the definition of the amplitude, phase and form of the radiated waves required to achieve these maximums. Two experimental case studies match measured radiated wave with circular waves. These matches demonstrate a correlation between the body motions and the dominant form of radiated waves as well as higher frequency waves. The study develops three general guidelines for the design of efficient point absorber wave energy converters (PAWECs). Optimum power absorption occurs when the PAWEC radiates theoretical heave and surge waves of the appropriate amplitude and phase. Theoretical sway type waves should be minimized as these radiate energy and do not interact with the incident wave. Similarly, the radiation of higher harmonic waves should also be minimized for the same reasons.

Matthew Wypych; Lan Le-Ngoc; Keith Alexander; Alister Gardner

2012-01-01T23:59:59.000Z

290

Shining New Light on Protein Structure and Function thru Synchrotron Radiation Circular Dichroism (SRCD) Spectroscopy  

SciTech Connect (OSTI)

Circular dichroism (CD) spectroscopy has been employed for more than 50 years for the study of the structure and dynamics of proteins. It is now a workhorse of structural biology, finding applications in the determination of protein secondary structures, monitoring and deciphering protein folding, examining macromolecular interactions, and defining and quantitating protein-ligand binding. For the most part, CD studies have used laboratory-based instruments to measure electronic transitions in the far (190-250 nm), near ultraviolet (UV) (250-300 nm) and visible (> 400 nm) wavelength ranges, which have enabled studies of polypeptide backbones, aromatic amino acids and colored chromophores, respectively. Additional transitions exist at lower wavelengths in the vacuum ultraviolet (VUV) region (<190 nm); however, these transitions tend to be inaccessible to conventional CD instruments, due to the low intensity of their Xenon arc lamp light sources at wavelengths below190 nm. In 1980, the first synchrotron-based CD instruments were constructed, which took advantage of the high photon flux available from synchrotron light sources at these wavelengths. However, the technique of synchrotron radiation circular dichroism (SRCD) did not really take off until enabling studies had been done to show that additional data were obtainable for proteins in the VUV region, that these data were readily accessible with modern beamlines, and most importantly, that new applications of these data existed in structural molecular biology.

Wallace,B.

2005-01-01T23:59:59.000Z

291

Magnetic Cusp Configuration of the SPL Plasma Generator  

SciTech Connect (OSTI)

The Superconducting Proton Linac (SPL) is a novel linear accelerator concept currently studied at CERN. As part of this study, a new Cs-free, RF-driven external antenna H{sup -} plasma generator has been developed to withstand an average thermal load of 6 kW. The magnetic configuration of the new plasma generator includes a dodecapole cusp field and a filter field separating the plasma heating and H{sup -} production regions. Ferrites surrounding the RF antenna serve in enhancing the coupling of the RF to the plasma. Due to the space requirements of the plasma chamber cooling circuit, the cusp magnets are pushed outwards compared to Linac4 and the cusp field strength in the plasma region is reduced by 40% when N-S magnetized magnets are used. The cusp field strength and plasma confinement can be improved by replacing the N-S magnets with offset Halbach elements of which each consists of three magnetic sub-elements with different magnetization direction. A design challenge is the dissipation of RF power induced by eddy currents in the cusp and filter magnets which may lead to overheating and demagnetization. In view of this, a copper magnet cage has been developed that shields the cusp magnets from the radiation of the RF antenna.

Kronberger, Matthias; Chaudet, Elodie; Favre, Gilles; Lettry, Jacques; Kuechler, Detlef; Moyret, Pierre; Paoluzzi, Mauro; Prever-Loiri, Laurent; Schmitzer, Claus; Scrivens, Richard; Steyaert, Didier [CERN, 385 Route de Meyrin, 1211 Geneva (Switzerland)

2011-09-26T23:59:59.000Z

292

New vortex ring configurations for the MAP dyon solutions  

Science Journals Connector (OSTI)

Electrically charged magnetic solutions of SU (2) Yang-Mills-Higgs theory with net zero topological charge has been obtained as axially symmetric saddle-point solutions in Ref. [1]. These solutions are characterized by an integer the winding number n of their azimuthal angle ? and an electric charge parameter 0configuration with n=2 ?=0.65 and varying Higgs field strength. Our observations showed that beside the fundamental solution which is an electrically charged MAP solution there also exist two other branches of eclectically charged vortex ring solutions which both appear at ?=20.45. The difference in total energy between these two branches of solution is very small but the difference in diameter of vortex rings of the two branches is quite significant. Finding of a branching phenomena in presence of a fundamental MAP solution has been for the first time. In Ref. [2] new branching solutions occur for the electrically neutral case in presence of fundamental vortex ring solutions but not for the fundamental MAP solution.

2014-01-01T23:59:59.000Z

293

Stationary Nonaxisymmetric Configurations of Magnetized Singular Isothermal Disks  

E-Print Network [OSTI]

Accepted.... Received...; in original form... We construct both aligned and unaligned (logarithmic spiral) stationary configurations of nonaxisymmetric magnetohydrodynamic (MHD) disks from either a full or a partial razor-thin power-law axisymmetric magnetized singular isothermal disk (MSID) that is embedded with a coplanar azimuthal magnetic field B? of a non-force-free radial scaling r?1/2 and that rotates differentially with a flat rotation curve of speed aD, where a is the isothermal sound speed and D is the dimensionless rotation parameter. Analytical solutions and stability criteria for determining D2 are derived. For aligned nonaxisymmetric MSIDs, eccentric m = 1 displacements may occur at arbitrary D2 in a full MSID but are allowed only with a2D2 = C2 A /2 in a partial MSID (CA is the Alfvn speed), while each case of |m | ? 1 gives two possible values of D2 for purely azimuthal propagations of fast and slow MHD density waves (FMDWs and SMDWs) that appear stationary in an inertial frame of reference. For disk galaxies modeled by a partial MSID resulting from a massive dark-matter halo with a flat rotation curve and a2D2 ? C2 A, stationary aligned perturbations of m = 1 are not allowed. For

Yu-qing Lou

2003-01-01T23:59:59.000Z

294

Configurable Virtualized System Environments for High Performance Computing  

SciTech Connect (OSTI)

Existing challenges for current terascale high performance computing (HPC) systems are increasingly hampering the development and deployment efforts of system software and scientific applications for next-generation petascale systems. The expected rapid system upgrade interval toward petascale scientific computing demands an incremental strategy for the development and deployment of legacy and new large-scale scientific applications that avoids excessive porting. Furthermore, system software developers as well as scientific application developers require access to large-scale testbed environments in order to test individual solutions at scale. This paper proposes to address these issues at the system software level through the development of a virtualized system environment (VSE) for scientific computing. The proposed VSE approach enables ''plug-and-play'' supercomputing through desktop-to-cluster-to-petaflop computer system-level virtualization based on recent advances in hypervisor virtualization technologies. This paper describes the VSE system architecture in detail, discusses needed tools for VSE system management and configuration, and presents respective VSE use case scenarios.

Engelmann, Christian [ORNL; Scott, Stephen L [ORNL; Ong, Hong Hoe [ORNL; Vallee, Geoffroy R [ORNL; Naughton, III, Thomas J [ORNL

2007-01-01T23:59:59.000Z

295

Diquark condensation effects on hot quark star configurations  

E-Print Network [OSTI]

The equation of state for quark matter is derived for a nonlocal, chiral quark model within the mean field approximation.We investigate the effects of a variation of the formfactors of the interaction on the phase diagram of quark matter. Special emphasis is on the occurrence of a diquark condensate which signals a phase transition to color superconductivity and its effects on the equation of state under the condition of beta- equilibrium and charge neutrality. We calculate the quark star configurations by solving the Tolman- Oppenheimer- Volkoff equations and obtain for the transition from a hot, normal quark matter core of a protoneutron star to a cool diquark condensed one a release of binding energy of the order of Delta M c^2 ~ 10^{53} erg. We find that this energy could not serve as an engine for explosive phenomena since the phase transition is not first order. Contrary to naive expectations the mass defect increases when for a given temperature we neglect the possibility of diquark condensation.

D. Blaschke; S. Fredriksson; H. Grigorian; A. M. "Oztas

2004-02-07T23:59:59.000Z

296

Criticality Benchmark Analysis of the HTTR Annular Startup Core Configurations  

SciTech Connect (OSTI)

One of the high priority benchmarking activities for corroborating the Next Generation Nuclear Plant (NGNP) Project and Very High Temperature Reactor (VHTR) Program is evaluation of Japan's existing High Temperature Engineering Test Reactor (HTTR). The HTTR is a 30 MWt engineering test reactor utilizing graphite moderation, helium coolant, and prismatic TRISO fuel. A large amount of critical reactor physics data is available for validation efforts of High Temperature Gas-cooled Reactors (HTGRs). Previous international reactor physics benchmarking activities provided a collation of mixed results that inaccurately predicted actual experimental performance.1 Reevaluations were performed by the Japanese to reduce the discrepancy between actual and computationally-determined critical configurations.2-3 Current efforts at the Idaho National Laboratory (INL) involve development of reactor physics benchmark models in conjunction with the International Reactor Physics Experiment Evaluation Project (IRPhEP) for use with verification and validation methods in the VHTR Program. Annular cores demonstrate inherent safety characteristics that are of interest in developing future HTGRs.

John D. Bess

2009-11-01T23:59:59.000Z

297

Fusion proton diagnostic for the C-2 field reversed configuration  

SciTech Connect (OSTI)

Measurements of the flux of fusion products from high temperature plasmas provide valuable insights into the ion energy distribution, as the fusion reaction rate is a very sensitive function of ion energy. In C-2, where field reversed configuration plasmas are formed by the collision of two compact toroids and partially sustained by high power neutral beam injection [M. Binderbauer et al., Phys. Rev. Lett. 105, 045003 (2010); M. Tuszewski et al., Phys. Rev. Lett. 108, 255008 (2012)], measurements of DD fusion neutron flux are used to diagnose ion temperature and study fast ion confinement and dynamics. In this paper, we will describe the development of a new 3 MeV proton detector that will complement existing neutron detectors. The detector is a large area (50?cm{sup 2}), partially depleted, ion implanted silicon diode operated in a pulse counting regime. While the scintillator-based neutron detectors allow for high time resolution measurements (?100 kHz), they have no spatial or energy resolution. The proton detector will provide 10 cm spatial resolution, allowing us to determine if the axial distribution of fast ions is consistent with classical fast ion theory or whether anomalous scattering mechanisms are active. We will describe in detail the diagnostic design and present initial data from a neutral beam test chamber.

Magee, R. M., E-mail: rmagee@trialphaenergy.com; Clary, R.; Korepanov, S.; Smirnov, A.; Garate, E.; Knapp, K. [Tri Alpha Energy, Inc., Rancho Santa Margarita, California 92688 (United States); Tkachev, A. [Budker Institute of Nuclear Physics, Novosibirsk (Russian Federation)

2014-11-15T23:59:59.000Z

298

T-562: Novell ZENworks Configuration Management novell-tftp.exe Buffer  

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

2: Novell ZENworks Configuration Management novell-tftp.exe 2: Novell ZENworks Configuration Management novell-tftp.exe Buffer Overflow T-562: Novell ZENworks Configuration Management novell-tftp.exe Buffer Overflow February 22, 2011 - 7:00am Addthis PROBLEM: Novell ZENworks Buffer Overflow in TFTPD. PLATFORM: Novell ZENworks Configuration Management 10.x, Novell ZENworks Configuration Management 11.x ABSTRACT: A vulnerability has been reported in Novell ZENworks Configuration Management, which can be exploited by malicious people to compromise a vulnerable system. The vulnerability is caused due to a boundary error in novell-tftp.exe when parsing requests. This can be exploited to cause a heap-based buffer overflow via a specially crafted request sent to UDP port 69. The vulnerability is reported in versions 10.3.1, 10.3.2, and 11.0.

299

Configuring the National Ignition Facility for direct-drive experiments  

SciTech Connect (OSTI)

The National Ignition Facility (NIF) is a project whose primary mission is to provide an above-ground experimental capability for maintaining nuclear competence and weapons effects simulation, and to pursue the achievement of fusion ignition utilizing solid state lasers as the energy driver. In this facility a large number of laser beams are focused onto a small target located at the center of a spherical target chamber. The laser energy is delivered in a few billionths of a second, raising the temperature and density of the nuclear materials in the target to levels where significant thermonuclear energy is released. The thermonuclear reaction proceeds very rapidly, so that the target materials remain confined by their own inertia during the thermonuclear reaction. This type of approach is called inertial confinement fusion (ICF). The proposed project is described in a conceptual design report (CDR) that was released in May 1994. Early in FY95, a collaboration between the University of Rochester and the Lawrence Livermore National Laboratory was established to study reconfiguring the NIF to accommodate direct-drive experiments. The present paper is a report to the scientific community, primarily the scientists and engineers working on the design of the NIF. It represents results from work in progress, specifically work completed by the end of the second quarter FY95. This report has two main sections. The first describes the target requirements on the laser drive, and the second part describes how the NIF laser can be configured to accommodate both indirect and direct drive. The report includes a description of the scientific basis for these conclusions. Though a complete picture does not exist, the present understanding is sufficient to conclude that the primary target requirements and laser functional requirements for indirect and direct drive are quite compatible. It is evidently straightforward to reconfigure the NIF to accommodate direct and indirect drive.

Eimerl, D. [ed.

1995-07-01T23:59:59.000Z

300

Dependence of effective internal field of congruent lithium niobate on its domain configuration and stability  

SciTech Connect (OSTI)

Congruent lithium niobate is characterized by its internal field, which arises due to defect clusters within the crystal. Here, it is shown experimentally that this internal field is a function of the molecular configuration in a particular domain and also on the stability of that particular configuration. The measurements of internal field are done using interferometric technique, while the variation of domain configuration is brought about by room temperature high voltage electric field poling.

Das, Ranjit, E-mail: ranjitdas.in@gmail.com, E-mail: souvik2cat@gmail.com, E-mail: srirajib@yahoo.com; Ghosh, Souvik, E-mail: ranjitdas.in@gmail.com, E-mail: souvik2cat@gmail.com, E-mail: srirajib@yahoo.com; Chakraborty, Rajib, E-mail: ranjitdas.in@gmail.com, E-mail: souvik2cat@gmail.com, E-mail: srirajib@yahoo.com [Department of Applied Optics and Photonics, University of Calcutta, JD-2, Sector III, Salt Lake, Kolkata 700098 (India)

2014-06-28T23:59:59.000Z

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


301

Optical fiber configurations for transmission of laser energy over great distances  

DOE Patents [OSTI]

There are provided optical fiber configurations that provide for the delivery of laser energy, and in particular, the transmission and delivery of high power laser energy over great distances. These configurations further are hardened to protect the optical fibers from the stresses and conditions of an intended application. The configurations provide means for determining the additional fiber length (AFL) need to obtain the benefits of such additional fiber, while avoiding bending losses.

Rinzler, Charles C; Zediker, Mark S

2014-11-04T23:59:59.000Z

302

Tank waste remediation system privatization infrastructure program, configuration management implementation plan  

SciTech Connect (OSTI)

This Configuration Management Implementation Plan (CMIP) was developed to assist in managing systems, structures, and components (SSCS), to facilitate the effective control and statusing of changes to SSCS, and to ensure technical consistency between design, performance, and operational requirements. Its purpose is to describe the approach Privatization Infrastructure will take in implementing a configuration management program, to identify the Program`s products that need configuration management control, to determine the rigor of control, and to identify the mechanisms for that control.

Schaus, P.S.

1998-08-18T23:59:59.000Z

303

The Time-dependent Supersymmetric Configurations in M-theory and Matrix Models  

E-Print Network [OSTI]

In this paper, we study the half-supersymmetric time-dependent configurations in M-theory and their matrix models. We find a large class of 11D supergravity solutions, which keeps sixteen supersymmetries. Furthermore, we investigate the isometries of these configurations and show that in general these configurations have no supernumerary supersymmetries. And also we define the Matrix models in these backgrounds following Discrete Light-Cone Quantization (DLCQ) prescription.

Bin Chen

2005-08-25T23:59:59.000Z

304

A photoelastic stress analysis of a flat circular plate simply supported and subjected to a concentrated load at the center  

E-Print Network [OSTI]

LIBRARy 4 4 III coI I BGv IIf Tf4 A PHOTOELASTIC STRESS ANALYSIS OF A FLAT CIRCULAR PLATE SIWPLY SUPPORTED AND SUBJECTED TO A CONCENTRATED LOAD AT THE CENTERS A Thesis By Joseph Lloyd Fulbright Submitted to the Graduate School... of the Agricultural and Wechanical College of Texas in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE Way 1958 Wa)or Sub]ect& Wechanical Engineering A PHOTOELASTIC STRESS ANALYSIS OF A FLAT CIRCULAR PLATE SIMPLY SUPPORTED...

Fulbright, Joseph Lloyd

2012-06-07T23:59:59.000Z

305

U-024: IBM Lotus Sametime Configuration Servlet Lets Remote Users Obtain  

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

024: IBM Lotus Sametime Configuration Servlet Lets Remote Users 024: IBM Lotus Sametime Configuration Servlet Lets Remote Users Obtain Configuration Data U-024: IBM Lotus Sametime Configuration Servlet Lets Remote Users Obtain Configuration Data November 1, 2011 - 8:15am Addthis PROBLEM: IBM Lotus Sametime Configuration Servlet Lets Remote Users Obtain Configuration Data. PLATFORM: All Sametime Platforms : 7.0, 7.5, 7.5.1, 7.5.1.1, 7.5.1.2, 8.0, 8.0.1, 8.0.2, 8.5, 8.5.1, 8.5.1.1, 8.5.2 ABSTRACT: A remote user can obtain configuration information. reference lINKS: IBM Sametime Security Bulletin SecurityTracker Alert ID: 1026255 CVE-2011-1370 IMPACT ASSESSMENT: Medium Discussion: The Sametime server contains a configuration servlet that is accessed by several Sametime server processes. By default, this servlet does not require authentication, which could potentially allow an unauthorized user

306

System Configuration Management Implementation Procedure for the Canister Storage Building (CSB)  

SciTech Connect (OSTI)

This document provides configuration management for the Distributed Control System (DCS), the Gaseous Effluent Monitoring System (GEMS-100) System, the Heating Ventilation and Air Conditioning (HVAC) Programmable Logic Controller (PLC), the Canister Receiving Crane (CRC) CRN-001 PLC, and both North and South vestibule door interlock system PLCs at the Canister Storage Building (CSB). This procedure identifies and defines software configuration items in the CSB control and monitoring systems, and defines configuration control throughout the system life cycle. Components of this control include: configuration status accounting; physical protection and control; and verification of the completeness and correctness of these items.

GARRISON, R.C.

2000-11-28T23:59:59.000Z

307

MAP, MAC, and Vortex-rings Configurations in the Weinberg-Salam Model  

E-Print Network [OSTI]

We report on the presence of new axially symmetric monopoles, antimonopoles and vortex-rings solutions of the SU(2)$\\times$U(1) Weinberg-Salam model of electromagnetic and weak interactions. When the $\\phi$-winding number $n=1$, and 2, the configurations are monopole-antimonopole pair (MAP) and monopole-antimonopole chain (MAC) with poles of alternating sign magnetic charge arranged along the $z$-axis. Vortex-rings start to appear from the MAP and MAC configurations when the winding number $n=3$. The MAP configurations possess zero net magnetic charge whereas the MAC configurations possess net magnetic charge of $4\\pi n/e$. In the MAP configurations, the monopole-antimonopole pair is bounded by the ${\\cal Z}^0$ field flux string and there is an electromagnetic current loop encircling it. The monopole and antimonopole possess magnetic charges $\\pm\\frac{2\\pi n}{e}$ respectively. In the MAC configurations there is no string connecting the monopole and the adjacent antimonopole and they possess magnetic charges $\\pm\\frac{4\\pi n}{e}$ respectively. The MAC configurations possess infinite total energy and zero magnetic dipole moment whereas the MAP configurations which are actually sphalerons possess finite total energy and magnetic dipole moment. The configurations were investigated for varying value of Higgs boson mass $0\\leq M_H^2\\leq 80$ at Weinberg angle $\\theta_W=\\frac{\\pi}{4}$.

Rosy Teh; Ban-Loong Ng; Khai-Ming Wong

2014-08-20T23:59:59.000Z

308

Studies of one-campus and two-level configurations for SSC  

SciTech Connect (OSTI)

In this report we investigate in some detail the geometry and the cost of two modifications in the configuration of the SSC. 3 refs., 7 figs.

Teng, L.C.

1988-04-29T23:59:59.000Z

309

ANL-85-51 ANL-85-51 FLOW-INDUCED VIBRATION OF CIRCULAR CYLINDRICAL STRUCTURES  

Office of Scientific and Technical Information (OSTI)

ANL-85-51 ANL-85-51 ANL-85-51 ANL-85-51 FLOW-INDUCED VIBRATION OF CIRCULAR CYLINDRICAL STRUCTURES by ShoeiSheng Chen BASE TECHNOLOGY ARGONNE NATIONAL LABORATORY, ARGONNE, ILLINOIS Operated by THE UNIVERSITY OF CHICAGO for the U. S. DEPARTMENT OF ENERGY under Contract W-31-109-Eng-38 A major purpose of the Techni- cal information Center is to provide the broadest dissemination possi- ble of information contained in DOE's Research and Development Reports to business, industry, the academic community, and federal, state and local governments. Although a small portion of this report is not reproducible, it is being made available to expedite the availability of information on the research discussed herein. Distribution Category: LMFBR-Components: Base Technology (UC-79k) ANL-85-51 ANL-85-51

310

Computational study of subcritical response in flow past a circular cylinder  

E-Print Network [OSTI]

Flow past a circular cylinder is investigated in the subcritical regime, below the onset of Benard-von Karman vortex shedding at Re_c ~ 47. The transient response of infinitesimal perturbations is computed. The domain requirements for obtaining converged results is discussed at length. It is shown that energy amplification occurs as low as Re=2.2. Throughout much of the subcritical regime the maximum energy amplification increases approximately exponentially in the square of Re reaching 6800 at Re_c$. The spatiotemporal structure of the optimal transient dynamics is shown to be transitory Benard-von Karman vortex streets. At Re ~ 42 the long-time structure switches from exponentially increasing downstream to exponentially decaying downstream. Three-dimensional computations show that two-dimensional structures dominate the energy growth except at short times.

Cantwell, Christopher D; 10.1103/PhysRevE.82.026315

2013-01-01T23:59:59.000Z

311

Photo-production of scalar particles in the field of a circularly polarized laser beam  

E-Print Network [OSTI]

The photo-production of a pair of scalar particles in the presence of an intense, circularly polarized laser beam is investigated. Using the optical theorem within the framework of scalar quantum electrodynamics, explicit expressions are given for the pair production probability in terms of the imaginary part of the vacuum polarization tensor. Its leading asymptotic behavior is determined for various limits of interest. The influence of the absence of internal spin degrees of freedom is analyzed via a comparison with the corresponding probabilities for production of spin-1/2 particles; the lack of spin is shown to suppress the pair creation rate, as compared to the predictions from Dirac theory. Potential applications of our results for the search of minicharged particles are indicated.

Selym Villalba-Chvez; Carsten Mller

2012-08-17T23:59:59.000Z

312

Theoretical description of field-induced magnetic circular x-ray dichroism in nonmagnetic solids  

Science Journals Connector (OSTI)

It is demonstrated that the presence of an external magnetic field for a paramagnetic solid gives rise to a circular magnetic dichroism in x-ray dichroism (MCXD) in full analogy to the MCXD observed in ferromagnetic solids. It is shown that the conventional sum rules can be adopted for this situation to give access to the spin and orbital susceptibilities. Results of calculations for various transition metal systems demonstrate the applicability of the sum rules. In particular, for the alloy systems AgxPd1-x and AgxPt1-x use of the field induced MCXD should allow us to study in detail the Stoner enhancement of the spin susceptibility as well as the role of the orbital susceptibility of Pd and Pt, respectively.

S. Mankovsky and H. Ebert

2004-01-23T23:59:59.000Z

313

Circularly Polarized X Rays: Another Probe of Ultrafast Molecular Decay Dynamics  

SciTech Connect (OSTI)

Dissociative nuclear motion in core-excited molecular states leads to a splitting of the fragment Auger lines: the Auger-Doppler effect. We present here for the first time experimental evidence for an Auger-Doppler effect following F1s{yields}a{sub 1g}* inner-shell excitation by circularly polarized x rays in SF{sub 6}. In spite of a uniform distribution of the dissociating S-F bonds near the polarization plane of the light, the intersection between the subpopulation of molecules selected by the core excitation with the cone of dissociation induces a strong anisotropy in the distribution of the S-F bonds that contributes to the scattering profile measured in the polarization plane.

Travnikova, Oksana; Lindblad, Andreas; Nicolas, Christophe; Soederstroem, Johan; Kimberg, Victor; Miron, Catalin [Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, B.P. 48, F-91192 Gif-sur-Yvette Cedex (France); Liu Jicai; Gel'mukhanov, Faris [Department of Theoretical Chemistry, Roslagstullsbacken 15, Royal Institute of Technology, S-106 91 Stockholm (Sweden)

2010-12-03T23:59:59.000Z

314

Stability under radiation reaction of circular equatorial orbits around Kerr black holes  

Science Journals Connector (OSTI)

We examine the evolution, under gravitational radiation reaction, of slightly eccentric equatorial orbits of point particles around Kerr black holes. Our method involves numerical integration of the Sasaki-Nakamura equation. It is discovered that such orbits decrease in eccentricity throughout most of the inspiral, until shortly before the innermost stable circular orbit, when a critical radius rcrit is reached beyond which the inspiralling orbits increase in eccentricity. It is shown that the number of orbits remaining in this last (eccentricity increasing) phase of the inspiral is an order of magnitude less for prograde orbits around rapidly spinning black holes than for retrograde orbits. In the extreme limit of a Kerr black hole with spin parameter a=1, this critical radius descends into the throat of the black hole.

Daniel Kennefick

1998-08-11T23:59:59.000Z

315

Computational study of subcritical response in flow past a circular cylinder C. D. Cantwell* and D. Barkley  

E-Print Network [OSTI]

Computational study of subcritical response in flow past a circular cylinder C. D. Cantwell* and D is investigated in the subcritical regime, below the onset of Bénard-von Kármán vortex shedding at Reynolds number as Re=2.2. Throughout much of the subcritical regime the maximum energy amplification increases

Barkley, Dwight

316

Laboratory Model of a Contactless Device for Measuring Diameter of Objects with Circular Cross-section Objects  

E-Print Network [OSTI]

and improves the accuracy to measure the outside diameter of optical fibers manufactured at high speed. The device has folow specifications: measuring range: (0.1­1) mm, measuring area 2mm, light sourse ­ laser9 3 Laboratory Model of a Contactless Device for Measuring Diameter of Objects with Circular Cross

Borissova, Daniela

317

Multi-criteria selection of an Air Quality Model configuration based on quantitative and linguistic evaluations  

Science Journals Connector (OSTI)

This study presents the application of multi-criteria evaluation in the selection of an optimal configuration for an Air Quality Model. The simulation domains focus on the Mexico City Metropolitan Area. A set of 10 different configurations were considered ... Keywords: Air quality, Multi-criteria evaluation, Pareto Fronts, WRF-Chem

V. H. Almanza; I. Batyrshin; G. Sosa

2014-02-01T23:59:59.000Z

318

A Method for the Determination of the Configuration of Organic Molecules using Stereo-selective Adsorbents'  

Science Journals Connector (OSTI)

... We now report the preparation of 'stereo-selective adsorbents' suitable for application to the allocation of configurations to stereoisomers. The adsorbent is prepared ... principle of the method and demonstrates the degree of con-figurational selectivity of suitable 'stereoselective adsorbents'. Silica, gel was prepared in the presence of quinine, partialiy dried, partially ...

A. H. BECKETT; PATRICIA ANDERSON

1957-05-25T23:59:59.000Z

319

Design Optimization of MultiElement Aerodynamic Configurations Using a Viscous  

E-Print Network [OSTI]

Design Optimization of Multi­Element Aerodynamic Configurations Using a Viscous Adjoint Method.S.A An adjoint-based Navier-Stokes design and optimization method for multi-element aerodynamic configurations effects. Using a viscous continuous adjoint formulation, the necessary aerodynamic gradient information

Kim, Sangho

320

Study on intelligent contract information configuration and analysis by case-based reasoning  

Science Journals Connector (OSTI)

This paper presents an intelligent contract analysis and processing method, which can process a mass of contract information to meet the various demands of the enterprises. Here contracts are properly decomposed and configured according to their important ... Keywords: case-based reasoning (CBR), contract intelligent configuration, contract intelligent processing, data mining, knowledge database

Yi Sun; Jianrong Tan; Yalang Mao; Ming Lou

2006-04-01T23:59:59.000Z

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


321

Spheromak merging and field reversed configuration formation at the Swarthmore Spheromak Experimenta...  

E-Print Network [OSTI]

Spheromak merging and field reversed configuration formation at the Swarthmore Spheromak- and counter-helicity spheromak merging studies at the Swarthmore Spheromak Experiment SSX M. R. Brown, Phys configuration FRC formation and stability by counter-helicity spheromak merging. A pair of midplane coils

Brown, Michael R.

322

Force Free Configurations of Vortices in High Temperature Superconductors near H_{c2}  

E-Print Network [OSTI]

We study force-free configurations of Abrikosov flux lines in the line-liquid and line-crystal limit, near the melting transition at H_m. We show that the condition for zero force configurations can be solved by appealing to the structure of chiral liquid crystalline phases.

Randall D. Kamien

1998-04-27T23:59:59.000Z

323

A Safety Case Approach to Assuring Configurable Architectures of Safety-Critical Product Lines  

E-Print Network [OSTI]

A Safety Case Approach to Assuring Configurable Architectures of Safety-Critical Product Lines to the development of safety-critical systems. A product line offers large-scale reuse by exploiting common features the safety of architectural configurations and variation when developing product-line safety cases. We

Kelly, Tim

324

Configure Microsoft Outlook 2011 for Mac HMS Help Desk: (617) 432-2000  

E-Print Network [OSTI]

Configure Microsoft Outlook 2011 for Mac HMS Help Desk: (617) 432 2011 for Mac HMS Help Desk: (617) 432-2000 2 · Create a new;Configure Microsoft Outlook 2011 for Mac HMS Help Desk: (617) 432-2000 3

Blackwell, Keith

325

SP 800-128. Guide for Security-Focused Configuration Management of Information Systems  

Science Journals Connector (OSTI)

The purpose of Special Publication 800-128, Guide for Security-Focused Configuration Management of Information Systems, is to provide guidelines for organizations responsible for managing and administering the security of federal information systems ... Keywords: Configuration management, SecCM, control, information systems, monitoring, risk management framework, security content automation protocol (SCAP), security program, security-focused continuous monitoring

L. Arnold Johnson; Kelley L. Dempsey; Ronald S. Ross; Sarbari Gupta; Dennis Bailey

2011-08-01T23:59:59.000Z

326

Configuration interaction calculation of the specific mass shift for atoms with few valence electrons.  

E-Print Network [OSTI]

) calculation. If technically Electronic address: mgk@MF1309.spb.edu possible, we allow all configurations two valence electrons. II. DETAILS OF THE CALCULATIONS In this work we calculated SMS for the low-valence correlations were included. Si II, which has a ground state configuration 3s2 3p was calculated in [1] as a one-electron

Kozlov, Mikhail G

327

OPTIMAL CONFIGURATION OF A COMMAND AND CONTROL NETWORK: BALANCING PERFORMANCE AND RECONFIGURATION CONSTRAINTS  

SciTech Connect (OSTI)

The optimization of the configuration of communications and control networks is important for assuring the reliability and performance of the networks. This paper presents techniques for determining the optimal configuration for such a network in the presence of communication and connectivity constraints.

L. DOWELL

1999-07-01T23:59:59.000Z

328

Optimizing a physical security configuration using a highly detailed simulation model  

E-Print Network [OSTI]

Optimizing a physical security configuration using a highly detailed simulation model Marechal, T. Email: tommarechal@hotmail.com Abstract This chapter focuses on using a highly detailed simulation model. In this chapter describes the use of a highly detailed simulation model to find a superior security configuration

Smith, Alice E.

329

OMB Circular A-119 Federal Participation in the Development and Use of Voluntary Consensus Standards and in Conformity Assessment Activities; Notice  

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

8545 8545 Thursday February 19, 1998 Part IV Executive Office of the President Office of Management and Budget OMB Circular A-119; Federal Participation in the Development and Use of Voluntary Consensus Standards and in Conformity Assessment Activities; Notice 8546 Federal Register / Vol. 63, No. 33 / Thursday, February 19, 1998 / Notices EXECUTIVE OFFICE OF THE PRESIDENT Office of Management and Budget OMB Circular A-119; Federal Participation in the Development and Use of Voluntary Consensus Standards and in Conformity Assessment Activities AGENCY: Office of Management and Budget, EOP. ACTION: Final Revision of Circular A- 119. SUMMARY: The Office of Management and Budget (OMB) has revised Circular A-119 on federal use and development of voluntary standards. OMB has revised this Circular in order to make

330

V-120: EMC Smarts Network Configuration Manager Java RMI Access Control  

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

0: EMC Smarts Network Configuration Manager Java RMI Access 0: EMC Smarts Network Configuration Manager Java RMI Access Control Flaw Lets Remote Users Gain Full Control V-120: EMC Smarts Network Configuration Manager Java RMI Access Control Flaw Lets Remote Users Gain Full Control March 27, 2013 - 12:51am Addthis PROBLEM: EMC Smarts Network Configuration Manager Java RMI Access Control Flaw Lets Remote Users Gain Full Control PLATFORM: Version(s): prior to 9.2 ABSTRACT: Two vulnerabilities were reported in EMC Smarts Network Configuration Manager. REFERENCE LINKS: SecurityTracker Alert ID: 1028342 www.emc.com CVE-2013-0935 IMPACT ASSESSMENT: Medium DISCUSSION: A remote user can access some Java Remote Method Invocation methods without authenticating to gain control of the target system. A user can exploit unspecified flaws in the NCM System Management

331

V-120: EMC Smarts Network Configuration Manager Java RMI Access Control  

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

0: EMC Smarts Network Configuration Manager Java RMI Access 0: EMC Smarts Network Configuration Manager Java RMI Access Control Flaw Lets Remote Users Gain Full Control V-120: EMC Smarts Network Configuration Manager Java RMI Access Control Flaw Lets Remote Users Gain Full Control March 27, 2013 - 12:51am Addthis PROBLEM: EMC Smarts Network Configuration Manager Java RMI Access Control Flaw Lets Remote Users Gain Full Control PLATFORM: Version(s): prior to 9.2 ABSTRACT: Two vulnerabilities were reported in EMC Smarts Network Configuration Manager. REFERENCE LINKS: SecurityTracker Alert ID: 1028342 www.emc.com CVE-2013-0935 IMPACT ASSESSMENT: Medium DISCUSSION: A remote user can access some Java Remote Method Invocation methods without authenticating to gain control of the target system. A user can exploit unspecified flaws in the NCM System Management

332

Continuumdiscontinuum analysis of failure mechanisms around unsupported circular excavations in anisotropic clay shales  

Science Journals Connector (OSTI)

Abstract The stability of circular excavations in clay shales is a key issue in the drilling and tunnelling industries as well as in the field of deep geological waste storage. A large body of experimental evidence indicates that the damaged zone around these cavities is influenced by strong mechanical anisotropy induced by the layered material structure. The vast majority of numerical models adopted to date to analyse the stability of openings in layered rocks have been based on continuum mechanics principles using classic shear failure theory for elasto-plastic materials. However, a number of experimental observations demonstrate that clay shales may fail in a brittle manner under low-confinement conditions such as those characterizing the near-field of the excavation. Therefore, an alternative numerical approach based on non-linear fracture mechanics principles and the discrete element method is adopted to gain new insight into the failure process of this class of geomaterials. In order to account for the influence of clay shale microstructure on its mechanical behaviour a newly developed approach to capture the anisotropy of strength is proposed. With this numerical approach, the cohesive strength parameters of the fracture model are assumed to be a function of the relative orientation between the element bonds and the layering orientation. The effectiveness of the numerical technique is quantitatively demonstrated by simulating standard rock mechanics tests on an indurated claystone, namely Opalinus Clay. Emergent strength and deformation properties, together with the simulated fracture mechanisms, are shown to be in good agreement with experimental observations. The modelling technique is then applied to the simulation of the Excavation Damaged Zone (EDZ) around a circular tunnel in horizontally bedded Opalinus Clay. The simulated fracturing process is mainly discussed in the context of the damage mechanisms observed at the Mont Terri URL. Furthermore, the influence of in situ stress on resulting EDZ geometry is analysed together with possible implications for ground support and tunnel constructability. Modelling results highlight the importance of shear strength mobilization along bedding planes in controlling the EDZ formation process. In particular, slippage of bedding planes is shown to cause rock mass deconfinement which in turn promotes brittle failure processes in the form of spalling. The numerical technique is currently limited to two-dimensional analyses without any thermo-hydro-mechanical coupling.

A. Lisjak; G. Grasselli; T. Vietor

2014-01-01T23:59:59.000Z

333

Theory versus experimental results and comparisons for five orifice-compensated hybrid bearing configurations  

E-Print Network [OSTI]

). . . . . . 16 Static Loader (Kurtin, et al. , 1991). . . . . . . . . . . . . 17 Dynamic Excitation (Childs, Hale, and Rouvas, 1991). . . . . 18 Hydrostatic Bearing (Rowe, 1983) Pressure Distribution for an Orifice-Compensated Circular Hydrostatic Pad (Rowe... hydrostatic bearing, shown in Fig. 12, is an externally pressurized journal bearing which employs compensation (i. e. , flow restriction) devices to pro- vide both stability and load support for the journal. This compensation is accomplished by injecting a...

Franchek, Nancy Marie

1992-01-01T23:59:59.000Z

334

VOLUME 89, NUMBER 1 P H Y S I C A L R E V I E W L E T T E R S 1 JULY 2002 Multiple Filamentation of Circularly Polarized Beams  

E-Print Network [OSTI]

of Circularly Polarized Beams G. Fibich and B. Ilan Department of Applied Mathematics, Tel Aviv University, Tel of equations that describes the propagation of circularly polarized laser beams in a Kerr medium. Analysis and simulations of this system show that multiple filamentation is suppressed for circularly polarized beams. DOI

Fibich, Gadi

335

Configuration Management Assessment Plan - Developed By NNSA/Nevada Site Office Independent Oversight Division  

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

Configuration Management Configuration Management Assessment Plan NNSA/Nevada Site Office Independent Oversight Division Performance Objective: The objective of this assessment is to determine whether a Configuration Management Program (CM) is in place which allows for the availability and retrievability of accurate information, improves response to design and operational decisions, enhances worker safety, increases facility safety and reliability, increases efficiency of work efforts, and helps maintain integrity of interfacing orders. Criteria: The CM program supports DOE program implementation through the following: It provides the mechanisms for identifying, cataloging, and maintaining the design requirements and design basis (established to satisfy DOE O 420.1 Facility Safety).

336

NPIP: A skew line needle configuration optimization system for HDR brachytherapy  

SciTech Connect (OSTI)

Purpose: In this study, the authors introduce skew line needle configurations for high dose rate (HDR) brachytherapy and needle planning by integer program (NPIP), a computational method for generating these configurations. NPIP generates needle configurations that are specific to the anatomy of the patient, avoid critical structures near the penile bulb and other healthy structures, and avoid needle collisions inside the body. Methods: NPIP consisted of three major components: a method for generating a set of candidate needles, a needle selection component that chose a candidate needle subset to be inserted, and a dose planner for verifying that the final needle configuration could meet dose objectives. NPIP was used to compute needle configurations for prostate cancer data sets from patients previously treated at our clinic. NPIP took two user-parameters: a number of candidate needles, and needle coverage radius, {delta}. The candidate needle set consisted of 5000 needles, and a range of {delta} values was used to compute different needle configurations for each patient. Dose plans were computed for each needle configuration. The number of needles generated and dosimetry were analyzed and compared to the physician implant. Results: NPIP computed at least one needle configuration for every patient that met dose objectives, avoided healthy structures and needle collisions, and used as many or fewer needles than standard practice. These needle configurations corresponded to a narrow range of {delta} values, which could be used as default values if this system is used in practice. The average end-to-end runtime for this implementation of NPIP was 286 s, but there was a wide variation from case to case. Conclusions: The authors have shown that NPIP can automatically generate skew line needle configurations with the aforementioned properties, and that given the correct input parameters, NPIP can generate needle configurations which meet dose objectives and use as many or fewer needles than the current HDR brachytherapy workflow. Combined with robot assisted brachytherapy, this system has the potential to reduce side effects associated with treatment. A physical trial should be done to test the implant feasibility of NPIP needle configurations.

Siauw, Timmy; Cunha, Adam; Berenson, Dmitry; Atamtuerk, Alper; Hsu, I-Chow; Goldberg, Ken; Pouliot, Jean [Department of Civil and Environmental Engineering, University of California, Berkeley, 760 Davis Hall, Berkeley, California 94720-1710 (United States); Department of Radiation Oncology, University of California, San Francisco, Comprehensive Cancer Center, 1600 Divisadero Street, Suite H1031, San Francisco, California 94143-1708 (United States); Department of Electrical Engineering and Computer Science, University of California, Berkeley, 4th Floor Sutardja Dai Hall, Berkeley, California 94720-1764 (United States); Department of Industrial Engineering and Operations, University of California, Berkeley, 4141 Etcheverry Hall, Berkeley, California 94720-1777 (United States); Department of Radiation Oncology, University of California, San Francisco, Comprehensive Cancer Center, 1600 Divisadero Street, Suite H1031, San Francisco, California 94143-1708 (United States); Department of Industrial Engineering and Operations Research and Department of Electrical Engineering and Computer Science, University of California, Berkeley, 4141 Etcheverry Hall, Berkeley, California 94720-1777 (United States); Department of Radiation Oncology, University of California, San Francisco, Comprehensive Cancer Center, 1600 Divisadero Street, Suite H1031, San Francisco, California 94143-1708 (United States)

2012-07-15T23:59:59.000Z

337

Strong-field tidal distortions of rotating black holes: Formalism and results for circular, equatorial orbits  

E-Print Network [OSTI]

Tidal coupling between members of a compact binary system can have an interesting and important influence on that binary's dynamical inspiral. Tidal coupling also distorts the binary's members, changing them (at lowest order) from spheres to ellipsoids. At least in the limit of fluid bodies and Newtonian gravity, there are simple connections between the geometry of the distorted ellipsoid and the impact of tides on the orbit's evolution. In this paper, we develop tools for investigating tidal distortions of rapidly rotating black holes using techniques that are good for strong-field, fast-motion binary orbits. We use black hole perturbation theory, so our results assume extreme mass ratios. We develop tools to compute the distortion to a black hole's curvature for any spin parameter, and for tidal fields arising from any bound orbit, in the frequency domain. We also develop tools to visualize the horizon's distortion for black hole spin $a/M \\le \\sqrt{3}/2$ (leaving the more complicated $a/M > \\sqrt{3}/2$ case to a future analysis). We then study how a Kerr black hole's event horizon is distorted by a small body in a circular, equatorial orbit. We find that the connection between the geometry of tidal distortion and the orbit's evolution is not as simple as in the Newtonian limit.

Stephen O'Sullivan; Scott A. Hughes

2014-07-25T23:59:59.000Z

338

System and method for chromatography and electrophoresis using circular optical scanning  

DOE Patents [OSTI]

A system and method is disclosed for chromatography and electrophoresis using circular optical scanning. One or more rectangular microchannel plates or radial microchannel plates has a set of analysis channels for insertion of molecular samples. One or more scanning devices repeatedly pass over the analysis channels in one direction at a predetermined rotational velocity and with a predetermined rotational radius. The rotational radius may be dynamically varied so as to monitor the molecular sample at various positions along a analysis channel. Sample loading robots may also be used to input molecular samples into the analysis channels. Radial microchannel plates are built from a substrate whose analysis channels are disposed at a non-parallel angle with respect to each other. A first step in the method accesses either a rectangular or radial microchannel plate, having a set of analysis channels, and second step passes a scanning device repeatedly in one direction over the analysis channels. As a third step, the scanning device is passed over the analysis channels at dynamically varying distances from a centerpoint of the scanning device. As a fourth step, molecular samples are loaded into the analysis channels with a robot.

Balch, Joseph W. (Livermore, CA); Brewer, Laurence R. (Oakland, CA); Davidson, James C. (Livermore, CA); Kimbrough, Joseph R. (Pleasanton, CA)

2001-01-01T23:59:59.000Z

339

Two-dimensional flows of foam: drag exerted on circular obstacles and dissipation  

E-Print Network [OSTI]

A Stokes experiment for foams is proposed. It consists in a two-dimensional flow of a foam, confined between a water subphase and a top plate, around a fixed circular obstacle. We present systematic measurements of the drag exerted by the flowing foam on the obstacle, \\emph{versus} various separately controlled parameters: flow rate, bubble volume, solution viscosity, obstacle size and boundary conditions. We separate the drag into two contributions, an elastic one (yield drag) at vanishing flow rate, and a fluid one (viscous coefficient) increasing with flow rate. We quantify the influence of each control parameter on the drag. The results exhibit in particular a power-law dependence of the drag as a function of the solution viscosity and the flow rate with two different exponents. Moreover, we show that the drag decreases with bubble size, increases with obstacle size, and that the effect of boundary conditions is small. Measurements of the streamwise pressure gradient, associated to the dissipation along the flow of foam, are also presented: they show no dependence on the presence of an obstacle, and pressure gradient depends on flow rate, bubble volume and solution viscosity with three independent power laws.

Benjamin Dollet; Florence Elias; Catherine Quilliet; Arnaud Huillier; Miguel Aubouy; Francois Graner

2004-11-22T23:59:59.000Z

340

Design of a High Flux Vacuum-Ultraviolet Beamline for Circular Dichroism Experiments  

SciTech Connect (OSTI)

A vacuum-ultraviolet bending-magnet beamline for circular dichroism (CD) experiments has been designed. To maximize the photon flux and minimize the focused beam size, a cylindrical mirror and a cylindrical grating with independent optical functions are utilized. The beamline can collect a 30 mrad horizontal by 7 mrad vertical solid angle of synchrotron radiation. By using a 600 grooves/mm grating, the calculated photon flux is greater than 1x10{sup 13} photons/sec and the focused beam size is 0.4 mmx0.65 mm for the spectral range from 130 nm to 330 nm with the energy resolving power set at 1000. The linear polarization degree is better than 75% and can be increased to 90% by reducing the vertical acceptance angle down to 2 mrad. In addition to the high flux mode described above, this beamline can also be operated in a high resolution mode. By using a 1200 grooves/mm grating, a resolving power greater than 10,000 can be achieved for the spectral range from 180 to 330 nm. This beamline can provide photon flux as high as the best synchrotron CD beamlines in the world while offers simultaneously a smaller focused beam size.

Fu, H. W.; Fung, H. S.; Chung, S. C.; Huang, L. J.; Chen, C. T. [National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan (China)

2010-06-23T23:59:59.000Z

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


341

A survey on energy storage resources configurations in order to propose an optimum configuration for smoothing fluctuations of future large wind power plants  

Science Journals Connector (OSTI)

Abstract As the wind power capacity increases, the effect of wind power fluctuations on the system stability becomes more significant. Despite its high costs, utilizing energy storage resources such as batteries is inevitable in the smoothing process of wind power fluctuations. In a wind power plant, the place where batteries are located has considerable direct effect on their required capacity and thus on the initial investment cost. Therefore, in this paper a suitable configuration which significantly reduces the batteries investment cost is proposed and then the wind power fluctuation of a large wind power plant connected to a smart distribution grid is smoothed. Additionally, existing configurations for installing batteries in large wind power plants are investigated. The proposed configuration utilizes smart parks as aggregated storage resources in load side and an aggregated battery energy storage system with limited capacity in plant side as well. Therefore, in addition to accurate smoothing of wind power fluctuations, the energy storage investment cost is reduced significantly utilizing the proposed configuration. Simulation studies in MATLAB software package are carried out to verify the performance of the proposed approach.

M. Jannati; S.H. Hosseinian; B. Vahidi; Guo-Jie Li

2014-01-01T23:59:59.000Z

342

Surveillance Guide - CMS 3.3 Verification of System Configuration and Operations  

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

VERIFICATION OF SYSTEM CONFIGURATION AND OPERATIONS VERIFICATION OF SYSTEM CONFIGURATION AND OPERATIONS 1.0 Objective The objective of this surveillance is for the Facility Representative to verify that the facility's configuration and operations are consistent with facility design basis documentation. These surveillance activities provide a basis for evaluating the effectiveness of the contractor's program for implementing design basis requirements and for ensuring compliance with DOE requirements. 2.0 References 2.1 DOE 4700.1, Project Management System 2.2 DOE 5480.19, Conduct of Operations Requirements for DOE Facilities 2.3 DOE 5480.23, Safety Analysis Reports 2.4 DOE-STD-1073-93, Guide for Operational Configuration Management 3.0 Requirements Implemented This surveillance is conducted to implement requirements CM-0009

343

Questions and Answers - How do I read an electron configuration table?  

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

How are electrons placed inshells around the nucleus? How are electrons placed in<br>shells around the nucleus? Previous Question (How are electrons placed in shells around the nucleus?) Questions and Answers Main Index Next Question (What holds an electron around the nucleus?) What holds an electronaround the nucleus? How do I read an electron configuration table? Are you making a model of an atom and need to know how to place the electrons around the nucleus? If so, you will need to know how to read an element's electron configuration table. Follow these easy directions to learn how! What is an electron configuration table? An electron configuration table is a type of code that describes how many electrons are in each energy level of an atom and how the electrons are arranged within each energy level. It packs a lot of information into a

344

DOE Order Self Study Modules - DOE STD 1073-2003, Configuration Management  

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

73-2003 73-2003 CONFIGURATION MANAGEMENT DOE -STD-1073-2003 Familiar Level August 2011 1 DOE-STD-1073-2003 CONFIGURATION MANAGEMENT FAMILIAR LEVEL OBJECTIVES Given the familiar level of this module and the resources, you will be able to answer the following questions: 1. What is the purpose of DOE-STD-1073-2003? 2. What are the objectives of configuration management? 3. To what type of DOE facility does DOE-STD-1073-2003 apply? 4. What is the first set of structures, systems, and components (SSCs) that must be included in a configuration management program? 5. What is a work control process? 6. What is the objective of change control? 7. What are three elements that a technical review is designed to verify? 8. What three elements should be included in a design basis review?

345

Oxygen-Consuming Chlor-Alkali Cell Configured To Minimize Peroxide  

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

Oxygen-Consuming Chlor-Alkali Cell Oxygen-Consuming Chlor-Alkali Cell Oxygen-Consuming Chlor-Alkali Cell Configured To Minimize Peroxide Formation Oxygen-consuming zero gap chlor-alkali cell was configured to minimize peroxide formation. Available for thumbnail of Feynman Center (505) 665-9090 Email Oxygen-Consuming Chlor-Alkali Cell Configured To Minimize Peroxide Formation Oxygen-consuming zero gap chlor-alkali cell was configured to minimize peroxide formation. The cell included an ion-exchange membrane that divided the cell into an anode chamber including an anode and a cathode chamber including an oxygen gas diffusion cathode. The cathode included a single-piece of electrically conducting graphitized carbon cloth. Catalyst and polytetrafluoroethylene were attached to only one side of the cloth.

346

V-010: 3Com, HP, and H3C Switches SNMP Configuration Lets Remote Users Take  

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

10: 3Com, HP, and H3C Switches SNMP Configuration Lets Remote 10: 3Com, HP, and H3C Switches SNMP Configuration Lets Remote Users Take Administrative Actions V-010: 3Com, HP, and H3C Switches SNMP Configuration Lets Remote Users Take Administrative Actions October 25, 2012 - 6:00am Addthis PROBLEM: 3Com, HP, and H3C Switches SNMP Configuration Lets Remote Users Take Administrative Actions PLATFORM: 3COM, and H3C Routers & Switches Specific products and model numbers is provided in the vendor's advisory. ABSTRACT: A vulnerability was reported in 3Com, HP, and H3C Switches. REFERENCE LINKS: HP Support document ID: c03515685 SecurityTracker Alert ID: 1027694 CVE-2012-3268 IMPACT ASSESSMENT: High DISCUSSION: A remote user with knowledge of the SNMP public community string can access potentially sensitive data (e.g., user names, passwords) in the

347

A Monte Carlo code describing the neutral gas transport in pipe configurations with attenuating media  

Science Journals Connector (OSTI)

A three-dimensional Monte Carlo description of the neutral gas transport in pipe configurations with almost arbitrary torsion and curvature is presented. To avoid quadratic or even transcendental expressions describing the pipe surfaces confining and ...

A. Nicolai

1993-06-01T23:59:59.000Z

348

Novel LNG-Based Integrated Process Configuration Alternatives for Coproduction of LNG and NGL  

Science Journals Connector (OSTI)

In this study, three novel process configurations for coproduction of LNG and NGL are introduced and analyzed. C3-MR, DMR, and MFC refrigeration systems are used for supplying the required refrigeration. High ethane recovery (90+%) and low specific power (...

Mehdi Mehrpooya; Mohammad Hossieni; Ali Vatani

2014-10-20T23:59:59.000Z

349

Configuration Management Plan for Long Length Contaminated Equipment Receiver and Transport Trailers  

SciTech Connect (OSTI)

Long Length Contaminated Equipment Removal System Receiver Trailer and Transport Trailer require a configuration management plan for design, requirements and operations baseline documents. This report serves as the plan for the Trailers.

DALE, R.N.

2000-05-01T23:59:59.000Z

350

A Comprehensive Search for Stable Pt-Pd Nanoalloy Configurations and Their Use as Tunable Catalysts  

SciTech Connect (OSTI)

Using density-functional theory, we predict stable alloy configurations (ground states) for a 1 nm PtPd cuboctahedral nanoparticle across the entire composition range and demonstrate their use as tunable alloy catalysts via hydrogen-adsorption studies. Unlike previous works, we use simulated annealing with a cluster expansion Hamiltonian to perform a rapid and comprehensive search that encompasses both high and low-symmetry configurations. The ground states show Pt(core)Pd(shell) type configurations across all compositions but with specific Pd patterns. For catalysis studies at room temperatures, the ground states are more realistic structural models than the commonly assumed random alloy configurations. Using the ground states, we reveal that the hydrogen adsorption energy increases (decreases) monotonically with at. % Pt for the {111} hollow ({100} bridge) adsorption site. Such trends are useful for designing tunable PdPt nanocatalysts for the hydrogen evolution reaction.

Tan, Teck L.; Wang, Lin-Lin; Johnson, Duane D.; Bai, Kewu

2012-08-15T23:59:59.000Z

351

Saltwell PIC Skid Programmable Logic Controller (PLC) Software Configuration Management Plan  

SciTech Connect (OSTI)

This document provides the procedures and guidelines necessary for computer software configuration management activities during the operation and maintenance phases of the Saltwell PIC Skids as required by LMH-PRO-309, Rev. 0, Computer Software Quality Assurance, Section 2.6, Software Configuration Management. The software configuration management plan (SCMP) integrates technical and administrative controls to establish and maintain technical consistency among requirements, physical configuration, and documentation for the Saltwell PIC Skid Programmable Logic Controller (PLC) software during the Hanford application, operations and maintenance. This SCMP establishes the Saltwell PIC Skid PLC Software Baseline, status changes to that baseline, and ensures that software meets design and operational requirements and is tested in accordance with their design basis.

KOCH, M.R.

1999-11-16T23:59:59.000Z

352

Saltwell Leak Detector Station Programmable Logic Controller (PLC) Software Configuration Management Plan (SCMP)  

SciTech Connect (OSTI)

This document provides the procedures and guidelines necessary for computer software configuration management activities during the operation and maintenance phases of the Saltwell Leak Detector Stations as required by HNF-PRO-309, Rev. 1, Computer Software Quality Assurance, Section 2.4, Software Configuration Management. The software configuration management plan (SCMP) integrates technical and administrative controls to establish and maintain technical consistency among requirements, physical configuration, and documentation for the Saltwell Leak Detector Station Programmable Logic Controller (PLC) software during the Hanford application, operations and maintenance. This SCMP establishes the Saltwell Leak Detector Station PLC Software Baseline, status changes to that baseline, and ensures that software meets design and operational requirements and is tested in accordance with their design basis.

WHITE, K.A.

2000-11-28T23:59:59.000Z

353

CogPiT ---Configuration of Protocols in TIP Burkhard Stiller \\Lambda  

E-Print Network [OSTI]

CogPiT --- Configuration of Protocols in TIP Burkhard Stiller \\Lambda University of Cambridge 334476, FAX: +44 +1223 334678 E­Mail: Burkhard.Stiller@cl.cam.ac.uk Abstract The variety of upcoming

Haddadi, Hamed

354

Highly configurable platforms for embedded computing systems Frank Vahida,*, Roman Lyseckya  

E-Print Network [OSTI]

Highly configurable platforms for embedded computing systems Frank Vahida,*, Roman Lyseckya 92521, USA Abstract Platform chips, which are pre-designed chips possessing numerous processors energy; Cache; Hardware/software partitioning; Architecture tuning 1. Introduction Integrated circuit (IC

Vahid, Frank

355

Analysis of Configurations for Photovoltaic Solar Energy Production Using Agent-Based Simulation  

Science Journals Connector (OSTI)

To configure a photovoltaic solar energy production plant the circumstances of a site play ... modules with micro-inverters are conceptualised as autonomous energy producing agents, which are monitored by a...

Jan Treur

2013-01-01T23:59:59.000Z

356

Computations of temperature profiles in spheromak configurations with open field lines Carl Sovinec  

E-Print Network [OSTI]

Computations of temperature profiles in spheromak configurations with open field lines Carl Sovinec 10/27/00 The NIMROD zero- spheromak simulation results have mostly open field lines for parameters

Sovinec, Carl

357

Field-reversed configuration (FRC) as a minimum-dissipative relaxed state  

Science Journals Connector (OSTI)

The field-reversed configuration (FRC) with a completely null toroidal field and finite plasma beta is shown to result from a relaxation mechanism based on the principle of minimum dissipation of energy.

R Bhattacharyya; M.S Janaki; B Dasgupta

2001-01-01T23:59:59.000Z

358

p-CdTe/n-CdS photovoltaic cells in the substrate configuration.  

E-Print Network [OSTI]

??In this thesis, p-CdTe/n-CdS solar cells in the substrate configuration have been studied. The focus is on device fabrication, performance optimization, and the development of (more)

Wu, Hsiang Ning (1984 - )

2014-01-01T23:59:59.000Z

359

Determining articulator configuration in voiced stop consonants by matching time-domain patterns in pitch periods  

E-Print Network [OSTI]

In this thesis I will be concerned with linking the observed speechsignal to the configuration of articulators.Due to the potentially rapid motion of the articulators, the speechsignal can be highly non-stationary. The ...

Kondacs, Attila

2005-01-28T23:59:59.000Z

360

Design of a cluster analysis heuristic for the configuration and capacity management of manufacturing cells  

E-Print Network [OSTI]

This dissertation presents the configuration and capacity management of manufacturing cells using cluster analysis. A heuristic based on cluster analysis is developed to solve cell formation in cellular manufacturing systems (CMS). The clustering...

Shim, Young Hak

2007-09-17T23:59:59.000Z

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


361

A configuration and analysis for damping oscillations in flexible robotic arms using passive elements  

E-Print Network [OSTI]

A hardware configuration that reduces excessive oscillation in flexible robotic arms is presented and analyzed. An experimental apparatus was constructed and proved to effectively damp unwanted oscillations using passive components. Equations...

Compere, Marc Damon

1996-01-01T23:59:59.000Z

362

Tank waste remediation system immobilized high-level waste storage project configuration management implementation plan  

SciTech Connect (OSTI)

This Configuration Management Implementation Plan was developed to assist in the management of systems, structures, and components, to facilitate the effective control and statusing of changes to systems, structures, and components; and to ensure technical consistency between design, performance, and operational requirements. Its purpose is to describe the approach Project W-464 will take in implementing a configuration management control, to determine the rigor of control, and to identify the mechanisms for imposing that control.This Configuration Management Implementation Plan was developed to assist in the management of systems, structures, and components, to facilitate the effective control and statusing of changes to systems, structures, and components; and to ensure technical consistency between design, performance, and operational requirements. Its purpose is to describe the approach Project W-464 will take in implementing a configuration management control, to determine the rigor of control, and to identify the mechanisms for imposing that control.

Burgard, K.G.

1998-09-24T23:59:59.000Z

363

Study of magnetic configurations in exchange-coupled bilayers by polarized neutron reflectometry  

Science Journals Connector (OSTI)

The magnetic configurations of exchange-coupled bilayers Gd40Fe60/TbXFe1-X were investigated by SQUID magnetometry and polarized neutron reflectometry (PNR). Depending on the composition of...

S. Mangin; F. Montaigne; C. Bellouard; H. Fritzsche

2002-12-01T23:59:59.000Z

364

A 12-barrel deuterium pellet injector for the C-2 field-reversed configuration device  

Science Journals Connector (OSTI)

A compact 12-barrel deuterium pellet injector for plasma studies in the C-2 field-reversed configuration device (USA) is described. As in other multibarrel injectors, pellets are simultaneously formed inside s...

I. V. Vinyar; A. Ya. Lukin; S. V. Skoblikov

2014-07-01T23:59:59.000Z

365

Atomistic characterization of stress-driven configurational instability and its activation mechanisms  

E-Print Network [OSTI]

Cleavage decohesion and shear dislocation nucleation are two basic modes of localized deformation in crystal lattices, which normally result from instability of the atomic configuration driven by mechanical forces. The ...

Zhu, Ting, 1971-

2004-01-01T23:59:59.000Z

366

Short time scale thermal mechanical shock wave propagation in high performance microelectronic packaging configuration  

E-Print Network [OSTI]

SHORT TIME SCALE THERMAL MECHANICAL SHOCK WAVE PROPAGATION IN HIGH PERFORMANCE MICROELECTRONIC PACKAGING CONFIGURATION A Thesis by MAHAVIR NAGARAJ Submitted to the Office of Graduate Studies of Texas A&M University... MICROELECTRONIC PACKAGING CONFIGURATION A Thesis by MAHAVIR NAGARAJ Submitted to Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE Approved as to style and content by: Chii...

Nagaraj, Mahavir

2004-11-15T23:59:59.000Z

367

Constitutive model effects on finite element modeling of elastomer behavior in radial interference seal configurations  

E-Print Network [OSTI]

CONSTITUTIVE MODEL EFFECTS ON FINITE ELEMENT MODELING OF ELASTOMER BEHAVIOR IN RADIAL INTERFERENCE SEAL CONFIGURATIONS A Thesis by JASON R. JACKSON Subnutted to the Office of Graduate Studies of Texas A&M University in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE August 1996 Major Subject: Mechanical Engineering CONSTITUTIVE MODEL EFFECTS ON FINITE ELEMENT MODELING OF ELASTOMER BEHAVIOR IN RADIAL INTERFERENCE SEAL CONFIGURATIONS A Thesis by JASON R. JACKSON...

Jackson, Jason R.

1996-01-01T23:59:59.000Z

368

Performance monitoring for new phase dynamic optimization of instruction dispatch cluster configuration  

DOE Patents [OSTI]

In a processor having multiple clusters which operate in parallel, the number of clusters in use can be varied dynamically. At the start of each program phase, the configuration option for an interval is run to determine the optimal configuration, which is used until the next phase change is detected. The optimum instruction interval is determined by starting with a minimum interval and doubling it until a low stability factor is reached.

Balasubramonian, Rajeev (Sandy, UT); Dwarkadas, Sandhya (Rochester, NY); Albonesi, David (Ithaca, NY)

2012-01-24T23:59:59.000Z

369

Disposal configuration options for future uses of greater confinement disposal at the Nevada Test Site  

SciTech Connect (OSTI)

The US Department of Energy (DOE) is responsible for disposing of a variety of radioactive and mixed wastes, some of which are considered special-case waste because they do not currently have a clear disposal option. The DOE`s Nevada Field Office contracted with Sandia National Laboratories to investigate the possibility of disposing of some of this special-case waste at the Nevada Test Site (NTS). As part of this investigation, a review of a near-surface and subsurface disposal options that was performed to develop alternative disposal configurations for special-case waste disposal at the NTS. The criteria for the review included (1) configurations appropriate for disposal at the NTS; (2) configurations for disposal of waste at least 100 ft below the ground surface; (3) configurations for which equipment and technology currently exist; and (4) configurations that meet the special requirements imposed by the nature of special-case waste. Four options for subsurface disposal of special-case waste are proposed: mined consolidated rock, mined alluvium, deep pits or trenches, and deep boreholes. Six different methods for near-surface disposal are also presented: earth-covered tumuli, above-grade concrete structures, trenches, below-grade concrete structures, shallow boreholes, and hydrofracture. Greater confinement disposal (GCD) in boreholes at least 100 ft deep, similar to that currently practiced at the GCD facility at the Area 5 Radioactive Waste Management Site at the NTS, was retained as the option that met the criteria for the review. Four borehole disposal configurations are proposed with engineered barriers that range from the native alluvium to a combination of gravel and concrete. The configurations identified will be used for system analysis that will be performed to determine the disposal configurations and wastes that may be suitable candidates for disposal of special-case wastes at the NTS.

Price, L. [Science Applications International Corp., Albuquerque, NM (United States)

1994-09-01T23:59:59.000Z

370

Experience operating a thermal configuration without a deaerator at the 330 MW unit 3 of the Kashira GRS  

Science Journals Connector (OSTI)

The operating experience gained during introduction of a configuration without a deaerator at the 330 MW unit No. 3 of the Kashira GRS is analyzed. The basic advantages of this configuration are pointed out, ...

G. D. Avrutsky; V. D. Nikanorov; I. R. Kalinowskiy

2012-11-01T23:59:59.000Z

371

On the ability of various circular inspiral templates to capture inspiral gravitational waves from compact binaries having tiny orbital eccentricities  

E-Print Network [OSTI]

We probe the ability of various types of post-Newtonian(PN)-accurate circular templates to capture inspiral gravitational-wave (GW) signals from compact binaries having tiny orbital eccentricities. The GW signals are constructed by adapting the phasing formalism, available in T. Damour, A. Gopakumar, and B. R. Iyer, [Phys. Rev. D 70, 064028 (2004)], employing the orbital energy and the time-eccentricity to describe the orbital evolution. Using the fitting factor estimates, relevant for the initial LIGO, we show that circular templates, based on the adiabatic TaylorT1, complete adiabatic TaylorT1 and TaylorT4 approximants are unable to capture our GW signals from compact binaries having tiny residual orbital eccentricities. However, the 2PN-order circular inspiral templates based on the recently introduced TaylorEt approximant are found to be both effectual and faithful in capturing GWs from inspiralling compact binaries having moderate eccentricities and we provide physical explanations for our observations.

Manuel Tessmer; Achamveedu Gopakumar

2012-02-28T23:59:59.000Z

372

Drag force on a circular cylinder midway between two parallel plates at Part 2: moving uniformly (numerical and experimental)  

Science Journals Connector (OSTI)

To contribute to the determination of the hydrodynamic interactions between a long straight circular cylindrical particle and flow boundaries, we calculate the wall correction of the drag force exerted on a circular cylinder moving uniformly midway between two parallel plane walls, at very low Reynolds numbers. The wall correction factor is numerically and asymptotically investigated. Furthermore, we present a new experimental results for the drag force exerted on this straight circular cylinder. The NavierStokes and continuity equations are expressed in the stream function and vorticity formulation and are rewritten in an orthogonal system of curvilinear co-ordinates. These equations are solved with a finite-differences method. The accuracy of the numerical code is tested successfully through a comparison with theoretical and experimental results. In the lubrication regime the numerical calculations of the pressure and viscosity forces are in very good agreement with those obtained by asymptotic expansions. Combining the present results with those obtained in Poiseuille flow (Chem. Eng. Sci. 59 (15, part 1) (2004) 3215) we give the speed at which a force-free cylindrical particle would move with the fluid perpendicularly to it's axis between two planar walls in Poiseuille flow and corrected by wall effects.

A. Ben Richou; A. Ambari; M. Lebey; J.K. Naciri

2005-01-01T23:59:59.000Z

373

Configuration-dependent electronic and magnetic properties of graphene monolayers and nanoribbons functionalized with aryl groups  

SciTech Connect (OSTI)

Graphene monolayers functionalized with aryl groups exhibit configuration-dependent electronic and magnetic properties. The aryl groups were adsorbed in pairs of neighboring atoms in the same sublattice A (different sublattices) of graphene monolayers, denoted as the M{sub 2}{sup AA} (M{sub 2}{sup AB}) configuration. The M{sub 2}{sup AA} configuration behaved as a ferromagnetic semiconductor. The band gaps for the majority and minority bands were 1.1 eV and 1.2 eV, respectively. The M{sub 2}{sup AB} configuration behaved as a nonmagnetic semiconductor with a band gap of 0.8 eV. Each aryl group could induce 1 Bohr magneton (?{sub B}) into the molecule-graphene system. Armchair graphene nanoribbons (GNRs) exhibited the same configuration-dependent magnetic properties as the graphene monolayers. The net spin of the functionalized zigzag GNRs was mainly localized on the edges demonstrating an adsorption site-dependent magnetism. For the zigzag GNRs, both the M{sub 2}{sup AA} and M{sub 2}{sup AB} configurations possibly had a magnetic moment. Each aryl group could induce 1.53.5 ?{sub B} into the molecule-graphene system. There was a metal-to-insulator transition after adsorption of the aryl groups for the zigzag GNRs.

Tian, Xiaoqing, E-mail: xqtian2008@gmail.com; Gu, Juan [College of Physics and Technology, Shenzhen University, Shenzhen 518060, Guangdong (China)] [College of Physics and Technology, Shenzhen University, Shenzhen 518060, Guangdong (China); Xu, Jian-bin, E-mail: jbxu@ee.cuhk.edu.hk [Department of Electronic Engineering and Materials Science and Technology Research Center, The Chinese University of Hong Kong, Shatin, New Territories (Hong Kong)] [Department of Electronic Engineering and Materials Science and Technology Research Center, The Chinese University of Hong Kong, Shatin, New Territories (Hong Kong)

2014-01-28T23:59:59.000Z

374

Adjudication Concerning the Supply and Installation of an Additional Computer Configuration for the Control System of the CERN Proton Synchroton  

E-Print Network [OSTI]

Adjudication Concerning the Supply and Installation of an Additional Computer Configuration for the Control System of the CERN Proton Synchroton

1973-01-01T23:59:59.000Z

375

Improved resummation of post-Newtonian multipolar waveforms from circularized compact binaries  

SciTech Connect (OSTI)

We improve and generalize a resummation method of post-Newtonian multipolar waveforms from circular (nonspinning) compact binaries introduced in Refs. 1,2. One of the characteristic features of this resummation method is to replace the usual additive decomposition of the standard post-Newtonian approach by a multiplicative decomposition of the complex multipolar waveform h{sub lm} into several (physically motivated) factors: (i) the Newtonian waveform, (ii) a relativistic correction coming from an 'effective source', (iii) leading-order tail effects linked to propagation on a Schwarzschild background, (iv) a residual tail dephasing, and (v) residual relativistic amplitude corrections f{sub lm}. We explore here a new route for resumming f{sub lm} based on replacing it by its l-th root: {rho}{sub lm}=f{sub lm}{sup 1/l}. In the extreme-mass-ratio case, this resummation procedure results in a much better agreement between analytical and numerical waveforms than when using standard post-Newtonian approximants. We then show that our best approximants behave in a robust and continuous manner as we deform them by increasing the symmetric mass ratio {nu}{identical_to}m{sub 1}m{sub 2}/(m{sub 1}+m{sub 2}){sup 2} from 0 (extreme-mass-ratio case) to 1/4 (equal-mass case). The present paper also completes our knowledge of the first post-Newtonian corrections to multipole moments by computing ready-to-use explicit expressions for the first post-Newtonian contributions to the odd-parity (current) multipoles.

Damour, Thibault [Institut des Hautes Etudes Scientifiques, 91440 Bures-sur-Yvette (France); ICRANet, 65122 Pescara (Italy); Iyer, Bala R. [Institut des Hautes Etudes Scientifiques, 91440 Bures-sur-Yvette (France); Raman Research Insitute, Bangalore 560 080 (India); Nagar, Alessandro [Institut des Hautes Etudes Scientifiques, 91440 Bures-sur-Yvette (France); ICRANet, 65122 Pescara (Italy); INFN, Sezione di Torino, Via Pietro Giuria 1, Torino (Italy)

2009-03-15T23:59:59.000Z

376

Anisotropic Circular Dichroism Signatures of Oriented Thylakoid Membranes and Lamellar Aggregates of LHCII  

SciTech Connect (OSTI)

In photosynthesis research, circular dichroism (CD) spectroscopy is an indispensable tool to probe molecular architecture at virtually all levels of structural complexity. At the molecular level, the chirality of the molecule results in intrinsic CD; pigment-pigment interactions in protein complexes and small aggregates can give rise to excitonic CD bands, while 'psi-type' CD signals originate from large, densely packed chiral aggregates. It has been well established that anisotropic CD (ACD), measured on samples with defined non-random orientation relative to the propagation of the measuring beam, carries specific information on the architecture of molecules or molecular macroassemblies. However, ACD is usually combined with linear dichroism and can be distorted by instrumental imperfections, which given the strong anisotropic nature of photosynthetic membranes and complexes, might be the reason why ACD is rarely studied in photosynthesis research. In this study, we present ACD spectra, corrected for linear dichroism, of isolated intact thylakoid membranes of granal chloroplasts, washed unstacked thylakoid membranes, photosystem II (PSII) membranes (BBY particles), grana patches, and tightly stacked lamellar macroaggregates of the main light-harvesting complex of PSII (LHCII). We show that the ACD spectra of face- and edge-aligned stacked thylakoid membranes and LHCII lamellae exhibit profound differences in their psi-type CD bands. Marked differences are also seen in the excitonic CD of BBY and washed thylakoid membranes. Magnetic CD (MCD) spectra on random and aligned samples, and the largely invariable nature of the MCD spectra, despite dramatic variations in the measured isotropic and anisotropic CD, testify that ACD can be measured without substantial distortions and thus employed to extract detailed information on the (supra)molecular organization of photosynthetic complexes. An example is provided showing the ability of CD data to indicate such an organization, leading to the discovery of a novel crystalline structure in macroaggregates of LHCII.

Miloslavina Y.; Hind G.; Lambrev, P. H.; Javorfi, T.; Varkonyi, Z.; Karlicky, V.; Wall, J. S.; Garab, G.

2012-03-01T23:59:59.000Z

377

JOURNAL OF COMMUNICATIONS AND NETWORKS, VOL.3, NO.4, DECEMBER 2001 1 SELFCON: An Architecture for Self-Configuration of  

E-Print Network [OSTI]

. The present configuration management approaches involve complex labor-intensive processes. The configuration. These traditional methods are based on the centralized manager/agent model. This approach involves centralization: Traditional configuration management involves complex labor-intensive processes performed by experts

Boutaba, Raouf

378

Modeling and Simulation of Four-Phase 8/6 Switched Reluctance Motor with an Improved Winding Configuration  

Science Journals Connector (OSTI)

This paper presents a novel winding configuration which stimulates short flux loops to improve performance of four-phase 8/6 switched reluctance motor (SRM) with two phases excited. Conventional winding configuration of four-phase 8/6 SRM with two phases ... Keywords: switched reluctance motor, winding configuration, simulation

Jie Li; Hexu Sun

2008-12-01T23:59:59.000Z

379

2-dimensional numerical simulations for the wave-wake-body interactions around circular cylinders in motion near seabed  

E-Print Network [OSTI]

grid system. In this thesis, several flow configurations, such as stationary and oscillating cylinder, were studied in order to predict and to understand the hydrodynamic forces. The results from the different simulations were compared with available...

Tavassoli, Armin

1999-01-01T23:59:59.000Z

380

Target design optimization for an electron accelerator driven subcritical facility with circular and square beam profiles.  

SciTech Connect (OSTI)

A subcritical facility driven by an electron accelerator is planned at the Kharkov Institute of Physics and Technology (KIPT) in Ukraine for medical isotope production, materials research, training, and education. The conceptual design of the facility is being pursued through collaborations between ANL and KIPT. As part of the design effort, the high-fidelity analyses of various target options are performed with formulations to reflect the realistic configuration and the three dimensional geometry of each design. This report summarizes the results of target design optimization studies for electron beams with two different beam profiles. The target design optimization is performed via the sequential neutronic, thermal-hydraulic, and structural analyses for a comprehensive assessment of each configuration. First, a target CAD model is developed with proper emphasis on manufacturability to provide a basis for separate but consistent models for subsequent neutronic, thermal-hydraulic, and structural analyses. The optimizations are pursued for maximizing the neutron yield, streamlining the flow field to avoid hotspots, and minimizing the thermal stresses to increase the durability. In addition to general geometric modifications, the inlet/outlet channel configurations, target plate partitioning schemes, flow manipulations and rates, electron beam diameter/width options, and cladding material choices are included in the design optimizations. The electron beam interactions with the target assembly and the neutronic response of the subcritical facility are evaluated using the MCNPX code. the results for the electron beam energy deposition, neutron generation, and utilization in the subcritical pile are then used to characterize the axisymmetric heat generation profiles in the target assembly with explicit simulations of the beam tube, the coolant, the clad, and the target materials. Both tungsten and uranium are considered as target materials. Neutron spectra from tungsten and uranium are very similar allowing the use of either material in the subcritical assembly without changing its characteristics. However, the uranium target has a higher neutron yield, which increases the neutron flux of the subcritical assembly. Based on the considered dimensions and heat generation profiles, the commercial CFD software Star-CD is used for the thermal-hydraulic analysis of each target design to satisfy a set of thermal criteria, the most limiting of which being to maintain the water temperature 50 below the boiling point. It is found that the turbulence in the inlet channels dissipates quickly in narrow gaps between the target plates and, as a result, the heat transfer is limited by the laminar flow conditions. On average, 3-D CFD analyses of target assemblies agree well with 1-D calculations using RELAP (performed by KIPT). However, the recirculation and stagnation zones predicted with the CFD models prove the importance of a 3-D analysis to avoid the resulting hotspots. The calculated temperatures are subsequently used for the structural analysis of each target configuration to satisfy the other engineering design requirements. The thermo-structural calculations are performed mostly with NASTRAN and the results occasionally compared with the results from MARC. Both, NASTRAN and MARC are commercially available structural-mechanics analysis software. Although, a significant thermal gradient forms in target elements along the beam direction, the high thermal stresses are generally observed peripherally around the edge of thin target disks/plates. Due to its high thermal conductivity, temperatures and thermal stresses in tungsten target are estimated to be significantly lower than in uranium target. The deformations of the target disks/plates are found to be insignificant, which eliminate concerns for flow blockages in narrow coolant channels. Consistent with the specifications of the KIPT accelerator to be used in this facility, the electron beam power is 100-kW with electron energy in the range of 100 to 200 MeV. As expected, the 100 MeV el

Gohar, M. Y. A; Sofu, T.; Zhong, Z.; Belch, H.; Naberezhnev, D.; Nuclear Engineering Division

2008-10-30T23:59:59.000Z

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


381

Darrieus vertical axis wind turbine for power generation I: Assessment of Darrieus VAWT configurations  

Science Journals Connector (OSTI)

Abstract This paper aims to assess the Darrieus vertical axis wind turbine (VAWT) configurations, including the drawbacks of each variation that hindered the development into large scale rotor. A comprehensive timeline is given as a lineage chart. The variations are assessed on the performance, components and operational reliability. In addition, current development and future prospects of Darrieus VAWT are presented. The Darrieus VAWT patented in France in 1925 and in the US in 1931 had two configurations: (i) curved blades and (ii) straight blades configurations. Curved blades configuration (egg-beater or phi-rotor) has evolved from the conventional guy-wires support into fixed-on-tower and cantilevered versions. Straight blades configuration used to have variable-geometry (Musgrove-rotor), variable-pitch (Giromill), Diamond, Delta and V/Y rotor variations. They were stopped due to low economical value, i.e. high specific cost of energy (COE). Musgrove-rotor has evolved into fixed-pitch straight-bladed H-rotor (referred as H-rotor in this paper for simplicity). H-rotor, in turn, has evolved into several variations: Articulating, Tilted and Helical H-rotors.

Willy Tjiu; Tjukup Marnoto; Sohif Mat; Mohd Hafidz Ruslan; Kamaruzzaman Sopian

2015-01-01T23:59:59.000Z

382

V-235: Cisco Mobility Services Engine Configuration Error Lets Remote Users  

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

5: Cisco Mobility Services Engine Configuration Error Lets 5: Cisco Mobility Services Engine Configuration Error Lets Remote Users Login Anonymously V-235: Cisco Mobility Services Engine Configuration Error Lets Remote Users Login Anonymously September 5, 2013 - 12:33am Addthis PROBLEM: A vulnerability was reported in Cisco Mobility Services Engine. A remote user can login anonymously. PLATFORM: Cisco Mobility Services Engine ABSTRACT: A vulnerability in Cisco Mobility Services Engine could allow an unauthenticated, remote attacker to connect to a database replication port anonymously via Secure Sockets Layer (SSL). REFERENCE LINKS: SecurityTracker Alert ID: 1028972 CVE-2013-3469 IMPACT ASSESSMENT: Medium DISCUSSION: The vulnerability is due to the misconfiguration of the Oracle SSL service. An attacker could exploit this vulnerability by connecting to an

383

Configuring Client PCs for use with Project Assessment and Reporting System(PARS II)  

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

4/2011 4/2011 Page 1 of 4 1 PROCEDURES 1.1 Introduction Most users will be comfortable with contacting their IT Helpdesk for completing the instructions below. However, if you have Admin rights on your workstation, and are comfortable with making configuration changes to it, you may follow these directions yourself. 1.2 Installation of ActiveX Control WINDOWS XP 1. Log onto the workstation to be configured using an ID/Password that can perform administrative functions on that workstation (e.g. Install software, add Active-X controls). Note that administrative access is only required for initial workstation configuration, not ongoing operation of the PARS II application. 2. Check hardware, software and network requirements as identified in section 2 below. Less than

384

Determining the mechanisms of catonic contamination of PEMFCs using a strip cell configuration  

SciTech Connect (OSTI)

Cationic contamination of polymer electrolyte fuel cells has been shown to cause serious performance degradation but the exact mechanisms of this degradation are not fully understood. A strip cell configuration was devised to study the mechanisms of performance degradation due to cationic contamination by changing the time and length scales of traditional fuel cells while providing a suitable reference electrode. This 'strip cell' configuration utilizes traditional Nafion{reg_sign} membranes in an inplane configuration with electrodes painted on each end. Using this cell it was determined that cationic contaminants collect near the cathode of the fuel cell under load and that this profile leads to increased losses primarily in the cathode region. These results can be directly related to performance losses in a typical PEMFC contaminated by foreign cations.

Kienitz, Brian L [Los Alamos National Laboratory; Pivovar, Bryan S [Los Alamos National Laboratory; Fernando, Garzon [Los Alamos National Laboratory; Zawodzinski, Thomas A [CWRU

2008-01-01T23:59:59.000Z

385

Role of electric charge in shaping equilibrium configurations of fluid tori encircling black holes  

SciTech Connect (OSTI)

Astrophysical fluids may acquire nonzero electrical charge because of strong irradiation or charge separation in a magnetic field. In this case, electromagnetic and gravitational forces may act together and produce new equilibrium configurations, which are different from the uncharged ones. Following our previous studies of charged test particles and uncharged perfect fluid tori encircling compact objects, we introduce here a simple test model of a charged perfect fluid torus in strong gravitational and electromagnetic fields. In contrast to ideal magnetohydrodynamic models, we consider here the opposite limit of negligible conductivity, where the charges are tied completely to the moving matter. This is an extreme limiting case which can provide a useful reference against which to compare subsequent more complicated astrophysically motivated calculations. To clearly demonstrate the features of our model, we construct three-dimensional axisymmetric charged toroidal configurations around Reissner-Nordstroem black holes and compare them with equivalent configurations of electrically neutral tori.

Kovar, Jiri; Slany, Petr; Stuchlik, Zdenek; Karas, Vladimir; Cremaschini, Claudio; Miller, John C. [Institute of Physics, Faculty of Philosophy and Science, Silesian University in Opava Bezrucovo nam. 13, CZ-74601 Opava (Czech Republic); Astronomical Institute, Academy of Sciences, Bocni II, CZ-14131 Prague (Czech Republic); SISSA and INFN, Via Bonomea 265, I-34136 Trieste (Italy); SISSA and INFN, Via Bonomea 265, I-34136 Trieste, Italy and Department of Physics (Astrophysics), University of Oxford, Keble Road, Oxford OX1 3RH (United Kingdom)

2011-10-15T23:59:59.000Z

386

Existence of exotic torus configuration in high-spin excited states of $^{40}$Ca  

E-Print Network [OSTI]

We investigate the possibility of the existence of the exotic torus configuration in the high-spin excited states of $^{40}$Ca. We here consider the spin alignments about the symmetry axis. To this end, we use a three-dimensional cranked Skyrme Hartree-Fock method and search for stable single-particle configurations. We find one stable state with the torus configuration at the total angular momentum $J=$ 60 $\\hbar$ and an excitation energy of about 170 MeV in all calculations using various Skyrme interactions. The total angular momentum J=60 $\\hbar$ consists of aligned 12 nucleons with the orbital angular momenta $\\Lambda=+4$, +5, and +6 for spin up-down neutrons and protons. The obtained results strongly suggest that a macroscopic amount of circulating current breaking the time-reversal symmetry emerges in the high-spin excited state of $^{40}$Ca.

T. Ichikawa; J. A. Maruhn; N. Itagaki; K. Matsuyanagi; P. -G. Reinhard; S. Ohkubo

2012-07-26T23:59:59.000Z

387

CFD modelling of thermal distribution in industrial server centres for configuration optimisation and energy efficiency  

Science Journals Connector (OSTI)

The use of servers for computational and communication control tasks is becoming more and more frequent in industries and institutions. Ever increasing computational power and data storage combined with reduction in chipsets size resulted in the increased heat density and need for proper configurations of the server racks to enhance cooling and energy efficiency. While different methods can be used to model and design new server centres and optimise their configuration, there is no clear guideline in the literature on the best way to design them and how to increase energy efficiency of existing server centres. This paper presents a simplified yet reliable computational fluid dynamics (CFD) model used to qualitatively evaluate different cooling solutions of a data centre and proposes guidelines to improve its energy efficiency. The influence of different parameters and configurations on the cooling load of the server room is then analysed.

Pierre-Luc Paradis; Drishtysingh Ramdenee; Adrian Ilinca; Hussein Ibrahim

2014-01-01T23:59:59.000Z

388

Laser systems configured to output a spectrally-consolidated laser beam and related methods  

DOE Patents [OSTI]

A laser apparatus includes a plurality of pumps each of which is configured to emit a corresponding pump laser beam having a unique peak wavelength. The laser apparatus includes a spectral beam combiner configured to combine the corresponding pump laser beams into a substantially spatially-coherent pump laser beam having a pump spectrum that includes the unique peak wavelengths, and first and second selectively reflective elements spaced from each other to define a lasing cavity including a lasing medium therein. The lasing medium generates a plurality of gain spectra responsive to absorbing the pump laser beam. Each gain spectrum corresponds to a respective one of the unique peak wavelengths of the substantially spatially-coherent pump laser beam and partially overlaps with all other ones of the gain spectra. The reflective elements are configured to promote emission of a laser beam from the lasing medium with a peak wavelength common to each gain spectrum.

Koplow, Jeffrey P. (San Ramon, CA)

2012-01-10T23:59:59.000Z

389

Operational concepts and implementation strategies for the design configuration management process.  

SciTech Connect (OSTI)

This report describes operational concepts and implementation strategies for the Design Configuration Management Process (DCMP). It presents a process-based systems engineering model for the successful configuration management of the products generated during the operation of the design organization as a business entity. The DCMP model focuses on Pro/E and associated activities and information. It can serve as the framework for interconnecting all essential aspects of the product design business. A design operation scenario offers a sense of how to do business at a time when DCMP is second nature within the design organization.

Trauth, Sharon Lee

2007-05-01T23:59:59.000Z

390

Your Vital Records INTRODUCTION The Federal Emergency Management Agency's Federal Preparedness Circular 65 states "The  

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

Identify and Protect Identify and Protect Your Vital Records INTRODUCTION The Federal Emergency Management Agency's Federal Preparedness Circular 65 states "The protection and ready availability of electronic and hardcopy documents, references, records, and information systems needed to support essential functions under the full spectrum of emergencies is another critical element of a successful COOP plan. Agency personnel must have access to and be able to use these records and systems in conducting their essential functions." Each Federal agency is responsible for establishing a Vital Records Program for the identification and protection of those records needed for Continuity of Operations Plans (COOP) before, during,

391

Half of internal inductance plus poloidal beta and plasma position in a circular cross-section tokamak  

Science Journals Connector (OSTI)

A special analytical solution of the GradShafranov equation (GSE) is presented with source functions, where the plasma pressure is linear in ? and the squared poloidal current has both a quadratic and a linear ? term. Half of internal inductance plus poloidal beta and plasma position have been calculated for a typical discharge of IR-T1 tokamak with circular cross-section. In the presented solution, six parameters are measured by the magnetic measurements. The calculated parameters approach the values measured by discrete magnetic coils in the middle of IR-T1 discharge.

A Rahimi-Rad; M Ghoranneviss; S Mohammadi; R Arvin

2012-01-01T23:59:59.000Z

392

Verification of Ni magnetic moment in GdNi2 Laves phase by magnetic circular dichroism measurement  

Science Journals Connector (OSTI)

Investigation of the magnetic moment of nickel in the polycrystal GdNi2 Laves phase was carried out by means of magnetic circular dichroism (MCD) in the core-level x-ray-absorption spectroscopy. It was revealed that the nickel magnetic moment originating from the 3d state (band) does exist and couples antiparallel to that of gadolinium whose MCD was observed at the M4,5 absorption edge. That is, nickel retains an intrinsic magnetic moment even in the Laves phase concentration. Furthermore, by analyzing in terms of sum rule, the contribution of spin and orbital magnetic moments to the magnetic moment was evaluated and discussed.

M. Mizumaki; K. Yano; I. Umehara; F. Ishikawa; K. Sato; A. Koizumi; N. Sakai; T. Muro

2003-04-09T23:59:59.000Z

393

Extremal Correlator of Three Vertex Operators for Circular Winding Strings in AdS5xS5  

E-Print Network [OSTI]

We study a three-point correlator of the three heavy vertex operators representing the circular winding string states which are point-like in AdS_5 and rotating with two spins and two winding numbers in S^5. We restrict ourselves to the case that two of the three vertex operators are located at the same point. We evaluate semiclassically the specific three-point correlator on a stationary splitting string trajectory which is mapped to the complex plane with three punctures. It becomes an extremal and 4d conformal invariant three-point correlator on the boundary. The marginality condition of the vertex operator is discussed.

Shijong Ryang

2011-09-15T23:59:59.000Z

394

Effects of symmetry on circular and linear magnetic dichroism in angle-resolved photoemission spectra of Gd/Y (0001) and Fe-Ni//Cu (001)  

SciTech Connect (OSTI)

We have observed circular and linear magnetic dichroism in angle- resolved photoemission spectra of 50-monolayer Gd film grown on Y(0001) and 6-monolayer Fe-Ni alloy films grown on Cu(001). The 4f level of Gd and the Fe 3p level of the Fe-Ni alloy were measured. A different geometry was used for the magnetic circular dichroism than was used to measure the magnetic linear dichroism. The geometries were chosen so that the shape of the magnetic circular dichroism is predicted to be equal to the shape of the magnetic linear dichroism for four-fold symmetric Fe-Ni/Cu(001) but not for three-fold symmetric Gd/Y(0001). Experimental results are presented. In this paper we examine the effect of symmetry (experimental geometry and sample geometry) on magnetic linear and circular dichroism in angle- resolved photoemission. In particular we chose separate geometries for measuring magnetic circular and magnetic linear dichroism. The geometries were chosen such that samples with four-fold symmetry about the sample normal may have magnetic circular and magnetic linear dichroism of the same shape. But samples with three-fold symmetry should not exhibit circular and magnetic linear dichroism of the same shape. The samples studied are three-fold symmetric Gd films grown on Y(0001) and four-fold symmetric Fe-Ni alloy grown on Cu(001). After presenting the methods of the experiment, we briefly review parts of a model of magnetic dichroism developed by Venus and coworkers and our specialization and extension of it, particularly for FeNi/Cu(001). We then show the results of our measurements.

Goodman, K.W.; Tobin, J.G.; Schumann, F.O. [Pennsylvania State Univ., University Park, PA (United States); Willis, R.F. [Pennsylvania State Univ., University Park, PA (United States); Gammon, J.W. [Virginia Commonwealth Univ., Richmond, VA (United States); Pappas, D.P. [Virginia Commonwealth Univ., Richmond, VA (United States); Kortright, J.B. [Lawrence Berkeley National Lab., CA (United States); Denlinger, J.D. [Lawrence Berkeley National Lab., CA (United States); Rotenberg, E. [Lawrence Berkeley National Lab., CA (United States); Warwick, A. [Lawrence Berkeley National Lab., CA (United States); Smith, N.V. [Lawrence Berkeley National Lab., CA (United States)

1997-03-26T23:59:59.000Z

395

Strings in plane-fronted gravitational waves  

E-Print Network [OSTI]

Brinkmann's plane-fronted gravitational waves with parallel rays --~shortly pp-waves~-- are shown to provide, under suitable conditions, exact string vacua at all orders of the sigma-model perturbation expansion.

C. Duval; Z. Horvath; P. A. Horvathy

2006-02-13T23:59:59.000Z

396

Rectangular Parallelepiped Vibration in Plane Strain State  

E-Print Network [OSTI]

In this paper we present a vibration spectrum of a homogenous parallelepiped (HP) under the action of volume and surface forces resulting from the exponent displacements entering the Fourier transforms. Vibration under the action of axial surface tractions and the free vibration are described separately. A relationship between the high frequency vibration and boundary conditions (BC) is also considered.

Jerzy Hanckowiak

2004-11-25T23:59:59.000Z

397

CRAD, Configuration Management- Oak Ridge National Laboratory High Flux Isotope Reactor Contractor ORR  

Broader source: Energy.gov [DOE]

A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for a February 2007 assessment of the Configuration Management Program portion of an Operational Readiness Review of the Oak Ridge National Laboratory, High Flux Isotope Reactor.

398

Figure 1: Configuration of energy recovering system Modeling of an Electromechanical Energy Harvesting  

E-Print Network [OSTI]

of the system are integrated permanent magnets (PM) with the magnetic fields in opposition. This arrangement induction, v is the displacement's speed of permanent magnet, d is the displacement, pe is the coil position Fig.1, shows the detailed configuration of the proposed energy recovering system. In the central shaft

Paris-Sud XI, Université de

399

Selecting the appropriate input data set when configuring a permanent workforce  

E-Print Network [OSTI]

of new personnel planning and scheduling problems for management. With over 70% of the global workforceSelecting the appropriate input data set when configuring a permanent workforce Jonathan F. Bard to use when running a scheduling model to select a permanent workforce for a service facility. Because

Bard, Jonathan

400

Integrated Process Configuration for High-Temperature Sulfur Mitigation during Biomass Conversion via Indirect Gasification  

Science Journals Connector (OSTI)

Integrated Process Configuration for High-Temperature Sulfur Mitigation during Biomass Conversion via Indirect Gasification ... National Bioenergy Center, National Renewable Energy Laboratory, 1617 Cole Blvd., Golden, Colorado 80401, United States ... Similar activation energies (9-10 kcal/mol) were measured for ZnO and Zn-Ti-O sulfidation. ...

Abhijit Dutta; Singfoong Cheah; Richard Bain; Calvin Feik; Kim Magrini-Bair; Steven Phillips

2012-05-23T23:59:59.000Z

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


401

Edge plasma modeling of limiter surfaces in a Tokamak divertor configuration  

SciTech Connect (OSTI)

During the startup phase of a tokamak the plasma configuration may evolve from a limiter to a divertor configuration. Some of the particle and heat flux from the core will be deposited on material surfaces near the separatrix instead of the divertor plates. Examples of such surfaces include the center-post in most tokamaks, baffles near the x-point that create closed divertors, and outboard limiter surfaces. Two-dimensional edge plasma models for tokamak divertor configurations typically give detailed information about the particle and heat fluxes on the divertor plates, but yield little or no information about fluxes on these other localized surfaces near the core plasma. To realistically model the startup phase of a tokamak it is necessary to compute the plasma interaction with both limiter and divertor surfaces. The UEDGE code [l] has been modified to include these limiter surfaces. In this report we present simulation results for an idealized ITER [2] startup configuration with variations in the limiter penetration depth and surface shape.

Rensink, M. E., LLNL

1998-05-11T23:59:59.000Z

402

Observation of inner-shell-excited configurations in triply ionized cerium Ce{sup 3+}  

SciTech Connect (OSTI)

We report wavelength measurements and energy levels for the three-times ionized cerium atom Ce{sup 3+}. The spectrum is that of a simple one-electron atom overlaid with a more complex three-electron spectrum originating from the excitation of an electron in the inner closed shell to the valence shell. The data provide energy levels for the inner-shell-excited configurations 5p{sup 5}4f5d and 5p{sup 5}4f6s and solve a long-standing puzzle regarding the fine structure of the 5p{sup 6}6d configuration, which is known to be anomalously large and inverted. The data show that this anomalous fine structure is the result of interaction between 5p{sup 6}6d and the inner-shell-excited configuration 5p{sup 5}4f5d. The results are supported by Hartree-Fock calculations and least-squares fits of the energy parameters to the observed levels. From our observed 5p{sup 6}6g configuration, we determine the ionization energy as 297670{+-}70 cm{sup -1} (36.906{+-}0.009 eV)

Reader, Joseph; Wyart, Jean-Francois [National Institute of Standards and Technology, Gaithersburg, Maryland 20899 (United States); Laboratoire Aime Cotton, CNRS, Universite Paris-Sud, Batiment 505, 91405 Orsay Cedex (France)

2009-10-15T23:59:59.000Z

403

An alternative hypothesis for association between distribution wiring configurations and cancer: Planning phase  

SciTech Connect (OSTI)

Several epidemiologic studies have reported positive associations between electric distribution wiring configurations and cancer incidence, particularly among children. According to the investigators of these studies, the results suggest a possible link between exposure to 60-Hertz magnetic fields because residential magnetic fields are correlated with wiring configurations. This report analyzes the plausibility of an alternate hypothesis to explain the epidemiologic observations, and recommends research to explore its validity. According to the hypothesis, ground return currents in plumbing service lines are associated with electric wiring configuration, and cause the release of corrosion products in tap water, whose ingestion constitutes a risk factor for cancer. To corroborate this hypothesis three conditions must be satisfied: the magnitude of the ground return currents in water pipes is related to wiring configuration, with higher currents generally found associated with homes classified in the high exposure categories; corrosion on the internal surface of water pipe is related to ac currents flowing on the pipe, with higher currents associated with higher rates of corrosion, and ingestion of water from pipes undergoing AC-induced corrosive processes increases the probability of developing cancer. The study's analysis did not uncover any critical data that would undermine the plausibility of this confounder hypothesis. 102 refs., 11 figs., 22 tabs.

Kavet, R. (Environmental Research Information, Inc., Palo Alto, CA (USA)); Silva, J.M. (Enertech Consultants, Campbell, CA (USA))

1990-06-01T23:59:59.000Z

404

Absorptive capacity configurations in supply chains: gearing for partner-enabled market knowledge creation  

Science Journals Connector (OSTI)

The need for continual value innovation is driving supply chains to evolve from a pure transactional focus to leveraging interorganizational partner ships for sharing information and, ultimately, market knowledge creation. Supply chain partners are (1) ... Keywords: absorptive capacity, configuration approaches, interorganizational information systems, knowledge management, process modularity, rich information, supply chain

Arvind Malhotra; Sanjay Gosain; Omar Sawy

2005-03-01T23:59:59.000Z

405

The spatial, temporal, and configurational characteristics of geographic dispersion in teams  

Science Journals Connector (OSTI)

As organizations operate across greater distances, scholars are increasingly interested in the work of geographically dispersed teams and the technologies that they use to communicate and coordinate their work. However, research has generally not specified ... Keywords: configuration, dispersion, distance, geographically dispersed teams, technology use, virtual teams

Michael Boyer O'Leary; Jonathon N. Cummings

2007-09-01T23:59:59.000Z

406

CRAD, Configuration Management- Oak Ridge National Laboratory High Flux Isotope Reactor  

Broader source: Energy.gov [DOE]

A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for a February 2007 assessment of the Configuration Management Program in preparation for restart of the Oak Ridge National Laboratory, High Flux Isotope Reactor.

407

CRAD, Configuration Management- Los Alamos National Laboratory TA 55 SST Facility  

Broader source: Energy.gov [DOE]

A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for an assessment of the Configuration Management program at the Los Alamos National Laboratory, TA 55 SST Facility.

408

Configuration and Control of the ATLAS Trigger and Data Acquisition Giovanna Lehmann Miotto,a  

E-Print Network [OSTI]

in which major upgrades were performed and we will assess the status of the system which has been used aspects of control and configuration of the ATLAS TDAQ existed already. Vali- dation was done on small scale systems with real detector readout [3] or on large computing farms with simulated data [4]. All

Anjos, André

409

Green Move: a platform for highly configurable, heterogeneous electric vehicle sharing  

E-Print Network [OSTI]

Green Move: a platform for highly configurable, heterogeneous electric vehicle sharing Andrea G the spreading of electric vehicles, in particular for what concerns the high upfront costs of the vehicles benefits. I. INTRODUCTION Electric vehicle sharing has the potential to provide a solution to many

Cugola, Gianpaolo

410

Lattice Boltzmann method for modeling liquid-vapor interface configurations in porous media  

E-Print Network [OSTI]

Lattice Boltzmann method for modeling liquid-vapor interface configurations in porous media Michael; published 13 January 2004. [1] The lattice Boltzmann method (LBM) has emerged as a powerful tool: Modeling; 3230 Mathematical Geophysics: Numerical solutions; KEYWORDS: Lattice Boltzmann Citation: Sukop, M

Sukop, Mike

411

Dynamic rupture through a branched fault2 configuration at Yucca Mountain and resulting3  

E-Print Network [OSTI]

Dynamic rupture through a branched fault2 configuration at Yucca Mountain and resulting3 ground analyses. This is motivated by the normal faults in the vicinity10 of Yucca Mountain, NV, a potential site fault12 located approximately 1 km west of the crest of Yucca Mountain, is the13 most active

Dmowska, Renata

412

Dynamic Rupture through a Branched Fault Configuration at Yucca Mountain, and Resulting Ground Motions  

E-Print Network [OSTI]

Dynamic Rupture through a Branched Fault Configuration at Yucca Mountain, and Resulting Ground of Yucca Mountain, Nevada, a potential site for a high-level radioactive waste repository. The Solitario km away from the SCF beneath the crest of Yucca Mountain, causing the repository site to experience

413

Solar Energy Materials & Solar Cells 91 (2007) 13881391 Bifacial configurations for CdTe solar cells  

E-Print Network [OSTI]

Solar Energy Materials & Solar Cells 91 (2007) 1388­1391 Bifacial configurations for CdTe solar We present a different back contact for CdTe solar cell by the application of only a transparent that acts as a free-Cu stable back contact and at the same time allows to realize bifacial CdTe solar cells

Romeo, Alessandro

414

Magneto-elastic oscillations of neutron stars: exploring different magnetic field configurations  

Science Journals Connector (OSTI)

......Section-3.1.4), and force-free configurations...in SGR 180620 as the fundamental, the second and the...The -component of the force-free condition leads...indicate overtones of the fundamental QPO frequency. 4 Overlap...D. R. , Kramer M. Handbook of Pulsar Astronomy......

Michael Gabler; Pablo Cerd-Durn; Jos A. Font; Ewald Mller; Nikolaos Stergioulas

2013-01-01T23:59:59.000Z

415

Atmospheric pressure plasma jet: Effect of electrode configuration, discharge behavior, and its formation mechanism  

E-Print Network [OSTI]

Atmospheric pressure plasma jet: Effect of electrode configuration, discharge behavior, and its 2008; accepted 8 June 2009; published online 10 July 2009 Atmospheric pressure plasma jet APPJ can The atmospheric pressure plasma is much advantageous over low pressure plasmas in various aspects. It can be dis

Zexian, Cao

416

Configuration Optimization of a Nanosphere Array on Top of a Thin Film Solar Cell  

E-Print Network [OSTI]

Configuration Optimization of a Nanosphere Array on Top of a Thin Film Solar Cell J. Grandidier on top of a solar cell can enhance light absorption and therefore increase its efficiency. Freely photocurrent of the solar cell. On a typical thin film amorphous silicon solar cell, a parametric analysis

Atwater, Harry

417

Field-reversed configuration formation scheme utilizing a spheromak and solenoid induction  

E-Print Network [OSTI]

Field-reversed configuration formation scheme utilizing a spheromak and solenoid induction S. P FRC formation technique is described, where a spheromak transitions to a FRC with inductive current are suppressed; spheromaks with a lighter majority species, such as neon and helium, either display a terminal

Ji, Hantao

418

Observation of field-reversed configurations with spheromak magnetic field profiles  

Science Journals Connector (OSTI)

We report the first observation of field-reversed configurations with nearly force-free magnetic fields in the central region of the compact toroid. The field profiles and flux ratios suggest that some form of relaxation phenomenon is occurring in this high-? kinetic regime. The magnetic helicity of the translating plasmas arises from axial asymmetry, possibly through end-shorting Alfvn waves.

M. Tuszewski and B. L. Wright

1989-11-13T23:59:59.000Z

419

Configuration adjustment potential of the Very High Temperature Reactor prismatic cores with advanced actinide fuels  

E-Print Network [OSTI]

?.????????????????????............................. 102 APPENDIX C?.???????????????????????????. 104 VITA????????????????????????????????.111 viii LIST OF FIGURES FIGURE Page 1 Flow Chart of the CSAS6 Control Module????????????.? 12 2 Fuel Graphite Block... for the Annular Core Configuration with UO2 and MA fuel loadings???.??. 75 x LIST OF TABLES TABLE Page I Design Specifications for the HTTR????????..???????. 17 II Fuel Graphite Block Properties??????????????...??? 22 III...

Ames, David E, II

2006-10-30T23:59:59.000Z

420

Strongly anomalous diffusion in sheared magnetic configurations E. Vanden Eijnden and R. Balescu  

E-Print Network [OSTI]

. In the latter case, the magnetic field is completely stochastic and a single magnetic line fills a three The statistical behavior of magnetic lines in a sheared magnetic configuration with reference surface x 0 of motion of the stochastic magnetic lines. After averaging over an ensemble of realizations, it yields

Van Den Eijnden, Eric

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


421

Resistive stability of magnetic dipole and other axisymmetric closed field line configurations  

E-Print Network [OSTI]

Resistive stability of magnetic dipole and other axisymmetric closed field line configurations by axisymmetric closed line poloidal magnetic fields are common both in nature (examples are stellar and planetary stability is provided by favorable average magnetic field line curvature, many of the closed field line

422

Maintaining the closed magnetic-field-line topology of a field-reversed configuration (FRC)  

E-Print Network [OSTI]

1 Maintaining the closed magnetic-field-line topology of a field-reversed configuration (FRC, WA 98052 Abstract The effects on magnetic-field-line structure of adding various static transverse introduce pronounced shear. #12;2 I. Introduction Magnetic field lines are closed. Where closure occurs

423

Workload-Based Configuration of MEMS-Based Storage Devices for Mobile Systems  

E-Print Network [OSTI]

Data layout, MEMS, Probe-Based Storage 1. INTRODUCTION Users of battery-powered mobile systems require sys- tems. An ideal storage device should be as performance- and energy-efficient as flashWorkload-Based Configuration of MEMS-Based Storage Devices for Mobile Systems Mohammed G. Khatib

Miller, Ethan L.

424

A Computational Market Model for Distributed Configuration Design Michael P. Wellman  

E-Print Network [OSTI]

of distributed configuration design problems. Given a design problem, the model defines a computational economy viewpoint for analyzing distributed design problems. #12;This page intentionally blank #12. Computational support for distributed design collaboration presents a variety of new challenges (Cutkosky et al

Wellman, Michael P.

425

Configure Microsoft Outlook 2011 for Mac HMS Help Desk: (617) 432-2000  

E-Print Network [OSTI]

Configure Microsoft Outlook 2011 for Mac HMS Help Desk: (617) 432 HMS Help Desk: (617) 432-2000 2 · Click on the icon to the left Help Desk: (617) 432-2000 3 · Enter the following fields: o E

Blackwell, Keith

426

Internal Friction Controls the Speed of Protein Folding from a Compact Configuration  

E-Print Network [OSTI]

Internal Friction Controls the Speed of Protein Folding from a Compact Configuration Suzette A is independent of the cosolutes used to adjust solvent friction. Therefore, interactions within the interior. Interestingly, we find a very strong temperature dependence in these "internal friction"-controlled dynamics

Roder, Heinrich

427

Self-configuration of "Home Abstraction Layer" via Sensor-Actuator Network  

E-Print Network [OSTI]

, Home device management, OSGi, Sensor, Actuator 1 Introduction Home automation systems have a decades the cost of this infrastructure across the board and to jumpstart the take-up of a home automation serviceSelf-configuration of "Home Abstraction Layer" via Sensor-Actuator Network Zheng HU1,2 Gilles

Paris-Sud XI, Université de

428

SUMTIME-MOUSAM: Configurable Marine Weather Forecast Generator Somayajulu G. Sripada and Ehud Reiter  

E-Print Network [OSTI]

Weathernews (UK) Ltd. Aberdeen iand@wni.com Abstract Numerical weather prediction (NWP) models produce time is done using guidance from Numerical Weather Prediction (NWP) models; time series data from the NWPSUMTIME-MOUSAM: Configurable Marine Weather Forecast Generator Somayajulu G. Sripada and Ehud

Reiter, Ehud

429

A game-theory approach to configuration of detection software with decision errors  

Science Journals Connector (OSTI)

Abstract The modern computer and communication networks that firms rely on have become more complex due to their dynamic, distributed and heterogeneous features; it is therefore increasingly important to characterize the interaction between a firm and a user to ensure information security. Recently, a game-theory approach has been widely employed to investigate this issue, including the optimal configurations of the detection software. However, for both the firm and the user, inaccuracies may persist in the gap between strategic decisions and actual actions, due to the effects of irrationality and the error-prone nature of the devices that carry their commands. This paper analyzes the effects of decision errors on the optimal strategies of both the firm and the user and, in particular, on the optimal configurations of the detection software. We finally demonstrate that decision errors can promote several pure equilibrium strategies and that fine-tuning these configurations quickly becomes difficult. Furthermore, we find that decision errors can drastically influence the optimal configurations and expected costs for a firm.

Xing Gao; Weijun Zhong; Shue Mei

2013-01-01T23:59:59.000Z

430

Method for preparing configured silicon carbide whisker-reinforced alumina ceramic articles  

DOE Patents [OSTI]

A ceramic article of alumina reinforced with silicon carbide whiskers suitable for the fabrication into articles of complex geometry are provided by pressureless sintering and hot isostatic pressing steps. In accordance with the method of the invention a mixture of 5 to 10 vol. % silicon carbide whiskers 0.5 to 5 wt. % of a sintering aid such as yttria and the balance alumina powders is ball-milled and pressureless sintered in the desired configuration in the desired configuration an inert atmosphere at a temperature of about 1800.degree. C. to provide a self-supporting configured composite of a density of at least about 94% theoretical density. The composite is then hot isostatically pressed at a temperature and pressure adequate to provide configured articles of at least about 98% of theoretical density which is sufficient to provide the article with sufficient strength and fracture toughness for use in most structural applications such as gas turbine blades, cylinders, and other components of advanced heat engines.

Tiegs, Terry N. (Lenoir City, TN)

1987-01-01T23:59:59.000Z

431

Process-Driven Feature Modeling for Variability Management of Project Environment Configurations  

E-Print Network [OSTI]

.winkler}@tuwien.ac.at ABSTRACT Technical projects environments, i.e., sets of methods and tools that support an engineering. For designing an effective and efficient engineering project environment, project managers and engineering of engineering project environment configurations and present a conceptual approach using semantic modeling

432

Evaluation of the TE12 mode in circular waveguide for low-loss, high-power rf transmission  

Science Journals Connector (OSTI)

The use of TE12 in circular waveguide with smooth walls was suggested for low-loss transport of rf signals in multimoded systems [S. G. Tantawi et al., in Advanced Accelerator Concepts: Eighth Workshop, edited by Wes Lawson, AIP Conf. Proc. No. 472 (AIP, New York, 1999), pp. 967974]. Such systems use the same waveguide to transport different signals over different modes. In this report we detail a series of experiments designed to measure the characteristics of this mode. We also describe the different techniques used to generate it and receive it. The experiments were done at X band around a frequency of 11.424 GHz, the frequency of choice for future linear colliders at X band [The NLC Design Group, Report No. LBNL-PUB-5424, SLAC Report No. 474, Report No. UCRL-ID 124161, 1996; The JLC Design Group, KEK-REPORT-97-1, 1997]. The transportation medium is 55 m of highly overmoded circular waveguide. The design of the joining flanges is also presented.

Sami G. Tantawi, C. D. Nantista, G. B. Bowden, K. S. Fant, N. M. Kroll, A. E. Vlieks, Y.-H. Chin, H. Hayano, V. F. Vogel, and J. Nielson

2000-08-03T23:59:59.000Z

433

Transition from two-dimensional electron-hole to geminate-exciton photoluminescence in GaAs?AlxGa1?xAs heterostructures under a high in-plane magnetic field  

Science Journals Connector (OSTI)

We studied the evolution of the photoluminescence (PL) spectra in modulation-doped GaAs-based heterostructures (single quantum wells and heterojunctions) at TL=1.2K under a high magnetic field B (up to 33T), which was applied parallel to the two-dimensional electron gas (2DEG) layer. Under low in-plane fields, B?<7T, the radiative recombination of the photoexcited hole with the 2DEG gives rise to a broad PL band that shifts quadratically with B?. This band transforms into a narrow PL line whose peak energy E shifts linearly with B? in the range of 1033T. The slope of the linear E(B) dependence was measured as ?ex=0.770.02meV?T in all the studied structures. The same linear slope is also measured in the PL spectra of bulk, undoped GaAs under high B. We thus attribute the sharp PL line observed in the doped heterostructures to magnetoexcitons that are photogenerated outside the 2DEG layer by a geminate formation process. The slope of the magnetoexciton energy dependence on B? is compared with that measured for unbound-electronhole Landau level transitions under a perpendicular B?. The ratio of the measured slopes, ?ex??0?0.8, is found to be equal to the ratio of the reduced excitonic mass to the reduced cyclotron mass of GaAs.

B. M. Ashkinadze, E. Cohen, V. V. Rudenkov, P. C. M. Christianen, J. C. Maan, and L. N. Pfeiffer

2007-08-27T23:59:59.000Z

434

Calculation of direct and indirect excitons in GaAs?Ga1?xAlxAs coupled double quantum wells: The effects of in-plane magnetic fields and growth-direction electric fields  

Science Journals Connector (OSTI)

The variational procedure, in the effective-mass and parabolic-band approximations, is used in order to investigate the effects of crossed electric and magnetic fields on the exciton states in GaAs?Ga1?xAlxAs coupled double quantum wells. Calculations are performed for double quantum wells under applied magnetic fields parallel to the layers and electric fields in the growth direction. The exciton envelope wave function is obtained through a variational procedure using a hydrogenic 1s-like wave function and an expansion in a complete set of trigonometric functions for the electron and hole wave functions. We take into account intersubband mixing brought about by the Coulomb interaction of electron-hole pairs in double quantum wells and present a detailed analysis of the properties of direct and indirect exciton states in these systems. The present study clearly reveals anticrossing effects on the dispersion with applied voltage (or growth-direction electric field) of the photoluminescence peaks associated with direct and indirect excitons. Calculated results are found in good agreement with available experimental measurements on the photoluminescence peak position associated with direct and indirect excitons in GaAs-Ga1?xAlxAs double quantum wells under growth-direction applied electric fields or under applied in-plane magnetic fields.

M. de Dios-Leyva, C. A. Duque, and L. E. Oliveira

2007-08-02T23:59:59.000Z

435

A Single Tower Configuration of the Modular Gamma Box Counter System - 13392  

SciTech Connect (OSTI)

Canberra's Standard Gamma Box Counter System is designed to perform accurate quantitative assays of gamma emitting nuclides for a wide range of large containers including B-25 crates and ISO shipping containers. Using a modular building-block approach, the system offers tremendous flexibility for a variety of measurement situations with wide ranges of sample activities and throughput requirements, as well as the opportunity to modify the configuration for other applications at a later date. The typical configuration consists of two opposing towers each equipped with two high purity germanium detectors, and an automated container trolley. This paper presents a modified configuration, consisting of a single tower placed inside a measurement trailer with three detector assemblies, allowing for additional vertical segmentation as well as a viewing a container outside the trailer through the trailer wall. An automatic liquid nitrogen fill system is supplied for each of the detectors. The use of a forklift to move the container for horizontal segmentation is accommodated by creating an additional operational and calibration set-up in the NDA 2000 software to allow for the operator to rotate the container and assay the opposite side, achieving the same sensitivity as a comparable two-tower system. This Segmented Gamma Box Counter System retains the core technologies and design features of the standard configuration. The detector assemblies are shielded to minimize interference from environmental and plant background, and are collimated to provide segmentation of the container. The assembly positions can also be modified in height and distance from the container. The ISOCS calibration software provides for a flexible approach to providing the calibrations for a variety of measurement geometries. The NDA 2000 software provides seamless operation with the current configuration, handling the data acquisition and analysis. In this paper, an overview of this system is discussed, along with the measured performance results, calibration methodology and verification, and minimum detectable activity levels. (authors)

Morris, K.; Nakazawa, D.; Francalangia, J.; Gonzalez, H. [Canberra Industries Inc., 800 Research Parkway, Meriden, CT, 06450 (United States)] [Canberra Industries Inc., 800 Research Parkway, Meriden, CT, 06450 (United States)

2013-07-01T23:59:59.000Z

436

Generation of circularly polarized multiple high-order harmonic emission from two-color crossed laser beams  

E-Print Network [OSTI]

laser beams Xiao-Min Tong and Shih-I Chu Department of Chemistry, University of Kansas and Kansas Center field and a linearly polarized second-harmonic laser field, in crossed-beam con- figuration second-harmonic field, in crossed-beam configuration. We demonstrate the feasibility of such a scheme

Chu, Shih-I

437

DOE-STD-1073-2003; DOE Technical Stadnard Configuration Management  

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

NOT MEASUREMENT SENSITIVE DOE-STD-1073-2003 October 2003 DOE STANDARD Configuration Management U.S. Department of Energy AREA CMAN Washington, D.C. 20585 DISTRIBUTION STATEMENT: Approved for public release; further dissemination unlimited. DOE-STD-1073-2003 Configuration Management This document has been reproduced from the best available copy. Available to DOE and DOE contractors from ES&H Technical Information Services, U.S. Department of Energy, (800) 473-4375, fax (301) 903-9823 or on the web at http://tis.eh.doe.gov/techstds/. Available to the public from the U.S. Department of Commerce, Technology Administration, National Technical Information Service, Springfield, VA 22161; (703) 605-6000.

438

DOE-STD-1073-93-Pt. 1; DOE Standard Guide for Operational Configuration Management Program  

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

1 1 CHAPTER 2 IMPLEMENTATION GUIDANCE FOR OPERATIONAL CONFIGURATION MANAGEMENT This guidance is appropriate for high-hazard facilities expected to operate for an extended period. Since DOE facilities vary in hazard level and circumstances of operation, a graded approach to implementation should be adopted. 2.1 PROGRAM MANAGEMENT ELEMENT The program management element of a configuration management (CM) program coordinates program development and implementation and ensures overall program effectiveness. This element leads the development of the other CM program elements. Development of an effective CM program should be initiated promptly, where needed, to address known issues, to improve compliance with various DOE Orders, and to produce the benefits of improved safety, reduced errors, and increased efficiency.

439

Initial results of operating the rocketdyne undulator in a tapered configuration  

Science Journals Connector (OSTI)

The near-infrared Rocketdyne/Stanford free electron laser (FEL) uses a very-high-quality precision undulator whose field strength and field taper are adjustable. The Rocketdyne undulator has been operated in both an amplifier configuration, as in the master-oscillator power amplifier (MOPA) experiments, and an oscillator configuration, as in the photocathode and tapered-undulator experiments. The tapered-undulator experiment was performed at the Stanford Photon Research Laboratory (SPRL) using an electron beam supplied by the Mark III rf-linac. During the experiment we observed sustained oscillations as the undulator magnetic-field taper was continuously tuned from 0% to 10%. We observed ?1.2% extraction efficiency for a magnetic-field taper of 9.6%. During the same experiment we observed sustained oscillations as the undulator gap was continuously varied over 120 mil. Details of the experiment are presented.

Mark Curtin; Anup Bhowmik; Jeffrey Brown; Wayne McMullin; Philip Metty; Stephen V. Benson; John M.J. Madey

1990-01-01T23:59:59.000Z

440

Development of a simple 2.45 GHz microwave plasma with a repulsive double hexapole configuration  

SciTech Connect (OSTI)

A simple and inexpensive 2.45 GHz microwave plasma source with a repulsive double hexapole configuration is described and characterized. In this work, the operation of the source is shown to be flexible in terms of electron density, electron temperature, and plasma uniformity even at low-pressures (approximately millitorr). It allows for easy control of the electron temperature (2-3.8 eV) and density ({approx}10{sup 9}-10{sup 10} cm{sup -3}) by removing either of the two hexapoles or by varying the separation distance between the two hexapoles. Characterization was done via information gathered from the usual Langmuir probe measurements for electron temperature and density. The source makes a resonant surface with its repulsive double hexapole magnetic configuration providing an additional longitudinal confinement near the walls midway between the two hexapoles. Magnetic field maps are presented for varying double hexapole distances. Power delivery for various settings is also presented.

Arciaga, Marko; Ulano, April; Lee, Henry Jr.; Lledo, Rumar; Ramos, Henry [National Institute of Physics, College of Science, University of the Philippines, Diliman, Quezon City 1101 (Philippines); Tumlos, Roy [Department of Physical Science and Mathematics, College of Arts and Sciences, University of the Philippines, Manila 1000 (Philippines)

2008-09-15T23:59:59.000Z

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


441

Plasma-wall interaction in Hall thrusters with magnetic lens configuration  

SciTech Connect (OSTI)

Some recently developed Hall thrusters utilize a magnetic field configuration in which the field lines penetrate the thruster walls at a high incidence angle. This so-called magnetic lens leads to an electric field pointing away from the walls, which is expected to reduce ion losses and improve thruster efficiency. This configuration also introduces an interesting behavior in the sheath formation. At sufficiently large angles, ions are repelled from the wall, and sheath collapse is expected. We use a plasma simulation code to investigate this phenomenon in detail. We consider the role of the magnetic field incidence angle, secondary electron emission, and a magnetic mirror. Numerical study confirms the theoretical predictions, and at large angles, ions are seen to turn away from the wall. We also consider the role of the magnetic field geometry on ion wall flux and channel erosion, and observe reduction in both quantities as the magnetic field incidence angle is increased.

Brieda, Lubos; Keidar, Michael [Department of Mechanical and Aerospace Engineering, George Washington University, 801 22nd St., Washington, DC 20052 (United States)

2012-06-15T23:59:59.000Z

442

Level-Rank Duality in Chern-Simons Theory from a Non-Supersymmetric Brane Configuration  

E-Print Network [OSTI]

We derive level-rank duality in pure Chern-Simons gauge theories from a non-supersymmetric Seiberg duality by using a non-supersymmetric brane configuration in type IIB string theory. The brane configuration consists of fivebranes, N D3 antibranes and an O3 plane. By swapping the fivebranes we derive a 3d non-supersymmetric Seiberg duality. After level shifts from loop effects, this identifies the IR of Sp(2N)_{2k-2N+2} and Sp(2k-2N+2)_{-2N} pure Chern-Simons theories, which is a level-rank pair. We also derive level-rank duality in a Chern-Simons theory based on a unitary group.

Adi Armoni; Edwin Ireson

2014-08-20T23:59:59.000Z

443

Insulated conductor temperature limited heater for subsurface heating coupled in a three-phase WYE configuration  

DOE Patents [OSTI]

A heating system for a subsurface formation is described. The heating system includes a first heater, a second heater, and a third heater placed in an opening in the subsurface formation. Each heater includes: an electrical conductor; an insulation layer at least partially surrounding the electrical conductor; and an electrically conductive sheath at least partially surrounding the insulation layer. The electrical conductor is electrically coupled to the sheath at a lower end portion of the heater. The lower end portion is the portion of the heater distal from a surface of the opening. The first heater, the second heater, and the third heater are electrically coupled at the lower end portions of the heaters. The first heater, the second heater, and the third heater are configured to be electrically coupled in a three-phase wye configuration.

Vinegar, Harold J. (Bellaire, TX); Sandberg, Chester Ledlie (Palo Alto, CA)

2010-11-09T23:59:59.000Z

444

arXiv:0707.4149v1[math.DG]27Jul2007 Test configurations and Geodesic rays  

E-Print Network [OSTI]

arXiv:0707.4149v1[math.DG]27Jul2007 Test configurations and Geodesic rays Xiuxiong Chen , Yudong Tang February 5, 2008 Contents 1 Introduction 2 2 Preliminary 5 2.1 Geodesic rays in K¨ahler potential Relative C1,1 geodesic ray from smooth test configuration 8 3.1 Existence

Chen, Xiuxiong

445

arXiv:1201.5447v1[math.DG]26Jan2012 CRITICAL CONFIGURATIONS OF PLANAR ROBOT ARMS  

E-Print Network [OSTI]

arXiv:1201.5447v1[math.DG]26Jan2012 CRITICAL CONFIGURATIONS OF PLANAR ROBOT ARMS G these results to the case of open polygonal chains, or robot arms. We introduce the notion of the oriented area of various special configurations of robot arms modeled by open polygonal chains appears essential in many

Siersma, Dirk

446

From conceptual process models to running systems: A holistic approach for the configuration of enterprise system processes  

Science Journals Connector (OSTI)

This paper proposes a method which aims at increasing the efficiency of enterprise system implementations. First, we argue that existing process modeling languages that feature different degrees of abstraction for different user groups exist and are ... Keywords: Business Process Modeling, Information Modeling Concepts, Model configuration, Reference modeling, System configuration

Alexander Dreiling; Michael Rosemann; Wil M. P. van der Aalst; Wasim Sadiq

2008-05-01T23:59:59.000Z

447

B.2.Creating a network Using the icons in the Topology Configuration window to create a network  

E-Print Network [OSTI]

47 B.2.Creating a network Using the icons in the Topology Configuration window to create a network topology. =========== Step 1) create a node Select an icon (e.g., RFG) by clicking on it in the Topology Configuration window. Now move the pointer to the Topology window, the pointer will become the selected icon

448

SiMoL A Modeling Language for Simulation and (Re-)Configuration Iulia Nica and Franz Wotawa  

E-Print Network [OSTI]

be used for both simulation and configuration purposes. SiMoL is an object- oriented language that allows for (restricted) simulation and con- figuration at the same time. SiMoL is an object-oriented languageSiMoL­ A Modeling Language for Simulation and (Re-)Configuration Iulia Nica and Franz Wotawa

Jannach, Dietmar

449

Electron density and temperature profile diagnostics for C-2 field reversed configuration plasmas  

SciTech Connect (OSTI)

The 9-point Thomson scattering diagnostic system for the C-2 field reversed configuration plasmas is improved and the measured electron temperature profiles are consistent with theoretical expectations. Rayleigh scattering revealed a finite line width of the ruby laser emission, which complicates density calibration. Taking advantage of the plasma wobble motion, density profile reconstruction accuracy from the 6-chord two-color CO{sub 2}/HeNe interferometer data is improved.

Deng, B. H.; Kinley, J. S.; Schroeder, J. [Tri Alpha Energy, Inc., Rancho Santa Margarita, California 92688 (United States)

2012-10-15T23:59:59.000Z

450

Evaluation of tire pressure, tire construction, axle configuration, and axle load on flexible pavement performance  

E-Print Network [OSTI]

engineers have observed an increase in truck tire inflation pressures that are significantly higher than those used in the AASHO Road Test. Today, radial tires are predominantly used by commercial trucking fleets, and recommended cold inflation pressures... of the requirements for the degree of MASTER OF SCIENCE August 1991 Major Subject: Civil Engineering EVALUATION OF TIRE PRESSURE, TIRE CONSTRUCTION, AXLE CONFIGURATION, AND AXLE LOAD ON FLEXIBLE PAVEMENT PERFORMANCE. A Thesis by AHMAD NAJEEB JAMY Approved...

Jamy, Ahmad Najeeb

1991-01-01T23:59:59.000Z

451

Simulation and study of thermal performance of liquid desiccant cooling cycle configurations  

E-Print Network [OSTI]

fulfillment of the requirements for the degree of MASTER OF SCIENCE Approved as to style and content by: $ g(Beg~ 'i:1. ;, "?i C. F. K ttleborough (Chair of Committee) W. He n t (Member), H. Juvka -Wold (Member) G. P. Peterson (Head of Department...) May 1995 Major Subject. Mechanical Engineering ABSTRACT Simulation and Study of Thermal Performance of Liquid Desiccant Cooling Cycle Configurations. (May 1995) Rajesh Dhir, B. S. , Poona University, India Chair of Advisory Committee: Dr. C. F...

Dhir, Rajesh

2012-06-07T23:59:59.000Z

452

Final report for the field-reversed configuration power plant critical-issue scoping study  

SciTech Connect (OSTI)

This report describes research in which a team from the Universities of Wisconsin, Washington, and Illinois performed a scoping study of critical issues for field-reversed configuration (FRC) power plants. The key tasks for this research were (1) systems analysis of deuterium-tritium (D-T) FRC fusion power plants, and (2) conceptual design of the blanket and shield module for an FRC fusion core.

Santarius, John F.; Mogahed, Elsayed A.; Emmert, Gilbert A.; Khater, Hesham Y.; Nguyen, Canh N.; Ryzhkov, Sergei V.; Stubna, Michael D.; Steinhauer, Loren C.; Miley, George H.

2001-03-01T23:59:59.000Z

453

A multi-reactor configuration for multi-megawatt spacecraft power supplies  

E-Print Network [OSTI]

, and various conceptual designs were explored. One design was selected for further refinement and analysis. Various configurations of power units with differing number, size, and conversion technology were involved. Optimum reactor/payload separation... distances were found to run from 60 to 80m. It was found that reliability studies utilizing spare power conversion units and reactors do not necessarily result in the most mass effective means of insuring mission success for NEP vehicles. By increasing...

George, Jeffrey Alan

2012-06-07T23:59:59.000Z

454

Supplemental information I. OPTICAL-LASER AND X-RAY CONFIGURATION  

E-Print Network [OSTI]

Supplemental information I. OPTICAL-LASER AND X-RAY CONFIGURATION The experiment used 70 fs x-ray and x-ray pulses was established by the initial decrease in the 111 diffraction peak in a laser pulses at 10 keV from the LCLS in the high-charge (250 pC) mode at 120 Hz. The x-ray beam was focused

Loss, Daniel

455

Signature of the eta-NN configurations in coherent pi0 photoproduction on the deuteron  

E-Print Network [OSTI]

The photoproduction of a neutral pion on the deuteron is considered in the energy region around the eta threshold, where a bump-like structure was observed at very backward pion angles. Different dynamical aspects which may be responsible for this phenomenon are analysed within a theoretical frame which includes intermediate eta-NN configurations. The results show in particular, that a three-body treatment of the eta-NN interaction is of special importance.

A. Fix

2005-09-13T23:59:59.000Z

456

Partitioning and Interfacial Tracers for Differentiating NAPL Entrapment Configuration:? Column-Scale Investigation  

Science Journals Connector (OSTI)

Partitioning and Interfacial Tracers for Differentiating NAPL Entrapment Configuration:? Column-Scale Investigation ... In field investigations, such as partitioning interwell tracer tests (PITTs), tracers are deployed before and after cleanup implementation to assess remedial performance (13, 26?28). ... The use of 222Rn, a naturally occurring radioactive isotope, was investigated as a partitioning tracer to detect and quantify the amt. of non-aq.-phase ...

Dongping Dai; Frank T. Barranco Jr.; Tissa H. Illangasekare

2001-11-17T23:59:59.000Z

457

Managing Hardware Configurations and Data Products for the Canadian Hydrogen Intensity Mapping Experiment  

E-Print Network [OSTI]

The Canadian Hydrogen Intensity Mapping Experiment (CHIME) is an ambitious new radio telescope project for measuring cosmic expansion and investigating dark energy. Keeping good records of both physical configuration of its 1280 antennas and their analogue signal chains as well as the ~100 TB of data produced daily from its correlator will be essential to the success of CHIME. In these proceedings we describe the database-driven software we have developed to manage this complexity.

Hincks, Adam D

2014-01-01T23:59:59.000Z

458

New method for inductively forming an oblate field reversed configuration from a spheromak  

Science Journals Connector (OSTI)

A new method for inductively forming a field reversed configuration is demonstrated, based on the inductively driven transformation of a spheromak. The driven transition can be achieved in argon and krypton plasmas, in which MHD modes are suppressed; simulations indicate that stability through the transition is explained by magnetic diffusion. Spheromaks with lighter working gas, such as neon and helium, either display a tilt mode or an n = 2 kink instability, both resulting in discharge termination.

S.P. Gerhardt; E.V. Belova; M. Yamada; H. Ji; M. Inomoto; Y. Ren; B. McGeehan

2008-01-01T23:59:59.000Z

459

Experimental and Theoretical Study on Circular Disk Particles Suspended in Centrifugal and Non-Centrifugal Force Environments  

SciTech Connect (OSTI)

Theoretical and experimental studies are performed on suspension particle motion in Centrifugal and Non-Centrifugal Force Environment, i.e., in both an axially rotating drum and a stable liquid tank. The particle velocity of circular disks is measured by PTV (Particle Tracking Velocimetry) method and is predicted by BBO (Basset-Boussinesq-Ossen) equation. It is found that (1) as time progresses, one side of the disk in the axially rotating drum is attracted toward the drum wall and its velocity is affected by the rotating speed, (2) when the particle moves in the Stokes' regime, its velocity is linearly increased with the distance from the center of the drum, (3) in contrast, the autorotation of the disk occurs in the non-centrifugal force field, and (4) the corresponding drag coefficient in the low Reynolds number region is in good agreement with the theoretical value of the sphere.

Torii, Shuichi [Department of Mechanical System Engineering, Kumamoto University (Japan); Watanabe, Yoshimi [Department of Engineering Physics, Electronics and Mechanics, Nagoya Institute of Technology (Japan); Tanaka, Satoyuki; Yano, Toshiaki; Iino, Naoko [Depertment of Mechanical Engineering, Kagoshima University (Japan)

2008-02-15T23:59:59.000Z

460

Unruh-DeWitt detector response along static and circular geodesic trajectories for Schwarzschild-AdS black holes  

E-Print Network [OSTI]

We present novel methods to numerically address the problem of characterizing the response of particle detectors in curved spacetimes. These methods allow for the integration of the Wightman function, at least in principle, in rather general backgrounds. In particular we will use this tool to further understand the nature of conformal massless scalar Hawking radiation from a Schwarzschild black hole in anti-de Sitter space. We do that by studying an Unruh-DeWitt detector at rest above the horizon and in circular geodesic orbit. The method allows us to see that the response rate shows peaks at certain characteristic frequencies, which correspond to the quasinormal modes (QNMs) of the space-time. It is in principle possible to apply these techniques to more complicated and interesting physical scenarios, e.g. geodesic infall or multiple detector entanglement evolution, or the study of the behaviour of quantum correlations in spacetimes with black hole horizons.

Keith K. Ng; Lee Hodgkinson; Jorma Louko; Robert B. Mann; Eduardo Martin-Martinez

2014-09-15T23:59:59.000Z

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


461

Circular geodesics of Bardeen and Ayon-Beato-Garcia regular black-hole and no-horizon spacetimes  

E-Print Network [OSTI]

We study circular geodesic motion of test particles and photons in the Bardeen and Ayon-Beato-Garcia (ABG) geometry describing spherically symmetric regular black-hole or no-horizon spacetimes. While the Bardeen geometry is not exact solution of Einstein's equations, the ABG spacetime is related to self-gravitating charged sources governed by Einstein's gravity and non-linear electrodynamics. They both are characterized by the mass parameter $m$ and the charge parameter $g$. We demonstrate that in similarity to the Reissner-Nordstrom (RN) naked singularity spacetimes an antigravity static sphere should exist in all the no-horizon Bardeen and ABG solutions that can be sorrounded by a Keplerian accretion disc. However, contrary to the RN naked singularity spacetimes, the ABG no-horizon spacetimes with parameter $g/m > 2$ can contain also an additional inner Keplerian disc hidden under the static antigravity sphere. Properties of the geodesic structure are reflected by simple observationally relevant optical phe...

Stuchlik, Zdenek

2015-01-01T23:59:59.000Z

462

DC response of hot carriers under circularly polarized intense microwave fields and intense magnetic fields in quantum wells  

SciTech Connect (OSTI)

Hot carrier dynamics under intense microwave and crossed magnetic fields are investigated theoretically for the case that the dominant scattering process is inelastic collision, especially intersubband and intrasubband transition in Quantum wells. If the applied electric fields are circularly polarized, the equation of motion forms symmetric on the x-y plane. But the carrier motions are complicated to accumulate because of acceleration and emission process. This situation makes possible to create a variation of the carrier motion, typically the carrier bunching is occurred. This state is a sort of population inversion. The DC response of this system attains strongly negative at appropriate field conditions. Through the simulation for the real case described below, it may include a type of induced emission.

Ishida, Norihisa, E-mail: ishida-norihisa@hotmail.com [Japan Electronics College, 1-25-5 Hyakunin-cho, Shinjuku-ku, Tokyo 169-8522 (Japan)

2013-12-04T23:59:59.000Z

463

Numerical modelling of a magnetic fluid-based squeeze film between rotating transversely rough curved circular plates  

Science Journals Connector (OSTI)

An attempt has been made to analyse the behaviour of a magnetic fluid-based squeeze film between two curved rough rotating circular plates when the curved upper plate lying along a surface determined by hyperbolic function approaches the curved lower plate along the surface governed by a secant function. The concerned Reynolds equation is solved with appropriate boundary conditions in dimensionless form to get the pressure distribution. The results show that the bearing system records a considerably enhanced performance as compared to that of the bearing system working with a conventional lubricant. This investigation suggests that although the bearing suffers owing to transverse roughness in general, there are some scopes for getting a relatively better performance in the case of negatively skewed roughness by properly choosing curvature parameters and the rotation ratio. Interestingly enough this positive effect further enhances especially when negative variance is involved.

G.M. Deheri; Nikhilkumar Abhangi

2011-01-01T23:59:59.000Z

464

Spin oscillations of relativistic fermions in the field of a traveling circularly polarized electromagnetic wave and a constant magnetic field  

E-Print Network [OSTI]

The Dirac equation, in the field of a traveling circularly polarized electromagnetic wave and a constant magnetic field, has singular solutions, corresponding the expansion of energy in vicinity of some singular point. These solutions described relativistic fermions. States relating to these solutions are not stationary. The temporal change of average energy, momentum and spin for single and mixed states is studied in the paper. A distinctive feature of the states is the disappearance of the longitudinal component of the average spin. Another feature is the equivalence of the condition of fermion minimal energy and the classical condition of the magnetic resonance. Finding such solutions assumes the use of a transformation for rotating and co-moving frames of references. Comparison studies of solutions obtained with the Galilean and non-Galilean transformation shown that some parameters of the non-Galilean transformation may be measured in high-energy physics.

Boris V. Gisin

2014-05-13T23:59:59.000Z

465

Spheromak merging and field reversed configuration formation at the Swarthmore Spheromak Experiment  

Science Journals Connector (OSTI)

The initial results of coaxial co- and counter-helicity spheromak merging studies at the Swarthmore Spheromak Experiment (SSX) [M. R. Brown Phys. Plasmas 6 1717 (1999)] are reported. In its new configuration SSX is optimized to study field reversed configuration (FRC) formation and stability by counter-helicity spheromak merging. A pair of midplane coils magnetically restricts the merging process to determine how the stability of the resulting magnetic configuration depends upon the quantity of toroidal flux remaining from the initial spheromaks. The diagnostic set at SSX featuring the capability of measuring up to 600 magnetic field components at 800 ns time resolution permits detailed studies of the dynamic three-dimensional magnetic structures produced during these experiments. A compact array of magnetic probes examines the local reconnection process while a distributed array of probes examines global magnetic structure. Counter-helicity merging produces a FRC that persists for several Alfvn times although the oppositely directed toroidal field of the initial spheromaks does not completely annihilate. The m=1 (toroidal) mode dominates late in the evolution and is consistent with the tilt instability. Co-helicity merging produces a single elongated spheromak that rapidly tilts.

C. D. Cothran; A. Falk; A. Fefferman; M. Landreman; M. R. Brown; M. J. Schaffer

2003-01-01T23:59:59.000Z

466

Randomly distilling W-class states into general configurations of two-party entanglement  

SciTech Connect (OSTI)

In this article we obtain results for the task of converting a single N-qubit W-class state (of the form {radical}(x{sub 0})|00...0>+{radical}(x{sub 1})|10...0>+{center_dot}{center_dot}{center_dot}+{radical}(x{sub N})|00...1>) into maximum entanglement shared between two random parties. Previous studies in random distillation have not considered how the particular choice of target pairs affects the transformation, and here we develop a strategy for distilling into general configurations of target pairs. We completely solve the problem of determining the optimal distillation probability for all three-qubit configurations and most four-qubit configurations when x{sub 0}=0. Our proof involves deriving new entanglement monotones defined on the set of four-qubit W-class states. As an additional application of our results, we present new upper bounds for converting a generic W-class state into the standard W state |W{sub N}>={radical}((1/N))(|10...0>+{center_dot}{center_dot}{center_dot}+|00...1>).

Cui, W.; Chitambar, E.; Lo, H. K. [Center for Quantum Information and Quantum Control (CQIQC), Department of Physics and Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario M5S 3G4 (Canada)

2011-11-15T23:59:59.000Z

467

A comparative analysis of configurations of linear Fresnel collectors for concentrating solar power  

Science Journals Connector (OSTI)

Abstract Linear Fresnel collector arrays present some relevant advantages in the domain of concentrating solar power because of their simplicity, robustness and low capital cost. However, they also present important drawbacks and limitations, notably their average concentration ratio, which seems to limit significantly the performance of these systems. First, the paper addresses the problem of characterizing the mirror field configuration assuming hourly data of a typical year, in reference to a configuration similar to that of Fresdemo. For a proper comparative study, it is necessary to define a comparison criterion. In that sense, a new variable is defined, the useful energy efficiency, which only accounts for the radiation that impinges on the receiver with intensities above a reference value. As a second step, a comparative study between central linear Fresnel reflectors and compact linear Fresnel reflectors is carried out. This analysis shows that compact linear Fresnel reflectors minimize blocking and shading losses compared to a central configuration. However this minimization is not enough to overcome other negative effects of the compact Fresnel collectors, as the greater dispersion of the rays reaching the receiver, caused by the fact that mirrors must be located farther from the receiver, which yields to lower efficiencies.

Mara J. Montes; Carlo Rubbia; Rubn Abbas; Jos M. Martnez-Val

2014-01-01T23:59:59.000Z

468

EMCORORG uses cross-correlation procedures to determine the location of the origin (center) of particles which appear circular in projection.  

E-Print Network [OSTI]

to produce the BATCH command procedure that computes the set of projections. After this is done, EMICOEMCORORG uses cross-correlation procedures to determine the location of the origin (center) of particles which appear circular in projection. This program can be implemented in one of three distinct

Baker, Timothy S.

469

B3 Trains Problem Statement The train problem assumes a circular track 101 miles in circumference. The track is labeled clockwise in  

E-Print Network [OSTI]

B3 Trains ­ Problem Statement The train problem assumes a circular track 101 miles in circumference be at the same spot as mile 0. One train starts at mile 0 going clockwise, another train starts at mile 100 going counterclockwise. The program prompts for speeds of each train in mph. The output is the mile (or fraction

Huth, Michael

470

Biology Lab 3: Small Scale Plasmid DNA Purification (Minipreps) Plasmids are small, circular pieces of DNA (about 3-5 kilobases in length on average) that  

E-Print Network [OSTI]

Biology Lab 3: Small Scale Plasmid DNA Purification (Minipreps) Plasmids are small, circular pieces. Plasmid purification procedures selectively enrich plasmid DNA over genomic DNA, which is present the small plasmids remain intact. Thus, when denatured, the plasmids remain linked to their complementary

471

Thermal Analysis of the 9975 Package with the 3013 Configuration During Normal Conditions of Transport  

SciTech Connect (OSTI)

Thermal analysis of the 9975 package with three configurations of the BNFL 3013 outer container (with Rocky Flats, SRS, and BNFL inner containers) have been performed for Normal Conditions of Transport (NCT) of plutonium oxide and metal. The NCT is defined in 10 CFR 71.71(c)(1) s an ambient of 100 F (38 C) in still air with 800 W/m{sup 2} and 400 W/m{sup 2} of solar heating on the drum top and sides, respectively. The 9975 drum package is considered to be in an upright position, and the drum bottom is adiabatic. The Rocky and SRS 3013 configurations with Pu metal contents (19 watts) result in acceptable (similar) packaging temperatures, however the plutonium metal temperatures are lower for the SRS design (SRS has helium fill gas whereas Rocky is essentially air filled). The BNFL configuration for Pu oxide contents (19 watts) result in acceptable temperatures and pressures based on limits in the 9975 Safety Analysis Report (SARP). However, for 30 watts of Pu oxide, the fiberboard peak temperatures are very near the SARP allowable. The pressure in the 3013 container is 688.4 psig for the 30 watt Pu oxide content and 569.5 psig for the 19 watt Pu oxide content. Gas species in the pressure computations include air, helium and hydrogen from complete radiolysis of the moisture. The oxygen generated from the radiolysis of the water is not included as a pressure contributor. The gas temperature in the pressure computations was very conservatively assumed to be the maximum plutonium temperature.

Hensel, S

1999-02-22T23:59:59.000Z

472

Incompressible relativistic spheres: Electrically charged stars, compactness bounds, and quasiblack hole configurations  

E-Print Network [OSTI]

We investigate the properties of relativistic star spheres made of an electrically charged incompressible fluid, generalizing, thus, the Schwarzschild interior solution. The investigation is carried by integrating numerically the hydrostatic equilibrium equation, i.e., the Tolman-Oppenheimer-Volkoff (TOV) equation, with the hypothesis that the charge distribution is proportional to the energy density. We match the interior to a Reissner-Nordstr\\"om exterior, and study some features of these star spheres such as the total mass $M$, the radius $R$, and the total charge $Q$. We also display the pressure profile. For star spheres made of a perfect fluid there is the Buchdahl bound, $R/M\\geq 9/4$, a compactness bound found from generic principles. For the Schwarzschild interior solution there is also the known compactness limit, the interior Schwarzschild limit where the configurations attain infinite central pressure, given by $R/M=9/4$, yielding an instance where the Buchdahl bound is saturated. We study this limit of infinite central pressure for the electrically charged stars and compare it with the Buchdahl-Andr\\'easson bound, a limit that, like the Buchdahl bound for the uncharged case, is obtained by imposing some generic physical conditions on charged configurations. We show that the electrical interior Schwarzschild limit of all but two configurations is always below the Buchdahl-Andr\\'easson limit, i.e., we find that the electrical interior Schwarzschild limit does not generically saturate the Buchdahl-Andr\\'easson bound. We also find that the quasiblack hole limit, i.e., the extremal most compact limit for charged incompressible stars, is reached when the matter is highly charged and the star's central pressure tends to infinity. This is one of the two instances where the Buchdahl-Andr\\'easson bound is saturated, the other being the uncharged, interior Schwarzschild solution.

Jos D. V. Arbail; Jos P. S. Lemos; Vilson T. Zanchin

2014-04-28T23:59:59.000Z

473

A novel reactor configuration for packed bed chemical-looping combustion of syngas  

Science Journals Connector (OSTI)

Abstract This study reports on the application of chemical looping combustion (CLC) in pressurized packed bed reactors using syngas as a fuel. High pressure operation of CLC in packed bed has a different set of challenges in terms of material properties, cycle and reactor design compared to fluidized bed operation. However, high pressure operation allows the use of inherently more efficient power cycles than low pressure fluidized bed solutions. This paper quantifies the challenges in high pressure operation and introduces a novel reactor concept with which those challenges can be addressed. Continuous cyclic operation of a packed bed CLC system is simulated in a 1D numerical reactor model. Importantly, it is demonstrated that the temperature profiles that can occur in a packed bed reactor as a result of the different process steps do not accumulate, and have a negligible effect on the overall performance of the system. Moreover, it has been shown that an even higher energy efficiency can be achieved by feeding the syngas from the opposite direction during the reduction step (i.e. countercurrent operation). Unfortunately, in this configuration mode, more severe temperature fluctuations occur in the reactor exhaust, which is disadvantageous for the operation of a downstream gas turbine. Finally, a novel reactor configuration is introduced in which the desired temperature rise for obtained hot pressured air suitable for a gas turbine is obtained by carrying out the process with two packed bed reactor in series (two-stage CLC). This is shown to be a good alternative to the single bed configuration, and has the added advantage of decreasing the demands on both the oxygen carrier and the reactor materials and design specification.

H.P. Hamers; F. Gallucci; P.D. Cobden; E. Kimball; M. van Sint Annaland

2013-01-01T23:59:59.000Z

474

Conceptual configurations of an accelerator-driven subcritical system utilizing minor actinides  

SciTech Connect (OSTI)

This paper purposes an Accelerator-Driven Subcritical (ADS) system which utilizes the Minor Actinides (MAs) from the US spent nuclear fuel inventory. A mobile fuel concept with micro-particles suspended in the liquid metal is adopted in the purposed system to avoid difficulties of developing and testing new MAs solid fuel forms. Three ADS configurations were developed and analyzed using the Monte Carlo fuel burnup methodology. The analyses demonstrated the capabilities of the proposed system to utilize the MAs and to dispose of the US spent nuclear fuels. (authors)

Cao, Y.; Gohar, Y. [Nuclear Engineering Div., Argonne National Laboratory, 9700 South Cass Ave., IL 60439 (United States)

2012-07-01T23:59:59.000Z

475

Equipment configurations for use of ammonia in supermarket applications. Report for September 1992-May 1994  

SciTech Connect (OSTI)

The paper discusses equipment configurations for the use of ammonia in supermarket refrigeration applications. This paper identifies the optimal design for ammonia-secondary fluid systems and compares their performance to that of R22 systems. Three methods of staging the compression were compared for both refrigerants. Six secondary fluids were evaluated for use with ammonia in a supermarket system. Overall system performance of the ammonia-secondary fluid refrigeration system is governed by a large set of design parameters. The influence of these parameters on overall system performance was studied systematically. From this parametric study, design rules were developed, leading to optimum ammonia-secondary fluid systems.

McDowell, T.P.; Mitchell, J.W.; Klein, S.A.

1996-12-31T23:59:59.000Z

476

Atomic configuration of irradiation-induced planar defects in 3C-SiC  

SciTech Connect (OSTI)

The atomic configuration of irradiation-induced planar defects in single crystal 3C-SiC at high irradiation temperatures was shown in this research. A spherical aberration corrected scanning transmission electron microscope provided images of individual silicon and carbon atoms by the annular bright-field (ABF) method. Two types of irradiation-induced planar defects were observed in the ABF images including the extrinsic stacking fault loop with two offset Si-C bilayers and the intrinsic stacking fault loop with one offset Si-C bilayer. The results are in good agreement with images simulated under identical conditions.

Lin, Y. R. [Department of Engineering and System Science, National Tsing-Hua University, Hsinchu 30013, Taiwan (China); National Synchrotron Radiation Center, 101 Hsin-Ann Road, Hsinchu Science Park, Hsinchu 30076, Taiwan (China); Ho, C. Y. [Institute of Nuclear Engineering and Science, National Tsing-Hua University, Hsinchu 30013, Taiwan (China); Hsieh, C. Y.; Chang, M. T.; Lo, S. C. [Material and Chemical Research Laboratories, Industrial Technology Research Institute, Hsinchu 31040, Taiwan (China); Chen, F. R. [Department of Engineering and System Science, National Tsing-Hua University, Hsinchu 30013, Taiwan (China); Kai, J. J., E-mail: ceer0001@gmail.com [Department of Engineering and System Science, National Tsing-Hua University, Hsinchu 30013, Taiwan (China); Institute of Nuclear Engineering and Science, National Tsing-Hua University, Hsinchu 30013, Taiwan (China)

2014-03-24T23:59:59.000Z

477

Numerical modeling of dust particle configurations in a cylindrical radio-frequency plasma reactor  

Science Journals Connector (OSTI)

In the present work, first, plasma phase variables in a cylindrical radio-frequency (rf) plasma reactor are numerically solved using the local field approximation model. Then, equilibrium configurations of a few interacting (sub-)micron-sized dust particles are obtained by integrating the particles equations for their motion and charge, accounting for the various forces acting on each particle in a three-dimensional Lagrangian framework. Direct comparison of the results with experiment demonstrates excellent qualitative agreement. Based on the ion focus phenomenon, a physical model is formulated and proven successful in simulating the vertically aligned structures.

M. Davoudabadi and F. Mashayek

2007-11-30T23:59:59.000Z

478

Formation of field reversed configuration by magnetic reconnection of two spheromaks  

Science Journals Connector (OSTI)

A novel slow formation method of field?reversed configuration (FRC) has been developed by magnetic reconnection of two spheromaks with opposite toroidal field. As a result of merging of two spheromaks with opposite helicity the initial toroidal fields cancel with each other and total toroidal field is reduced to zero. The ? value of the final plasma produced is as large as 0.8 (0.2) indicating a transition of its equilibrium from spheromak to FRC. A significant increase of the ion temperature has been measured during the reconnection period.

Yasushi Ono; Makoto Katsurai; Masaaki Yamada

1994-01-01T23:59:59.000Z

479

Analysis of the nuclear measurement program for an optimized BR2 core configuration  

SciTech Connect (OSTI)

This paper presents the analysis of the results of the Nuclear Measurement Program (NMP) executed during the shut-down of cycle 05/2012 of the BR2 reactor. The aim of the NMP was to determine the properties of a reactor core load with a new configuration of the control rods and to evaluate/verify the predicted numerical results by MCNPX. The methods used for the interpretation of the measurement results include combinations of an analytical method for determination of the axial relative control rod efficiency and least square techniques. (authors)

Van Den Branden, G.; Kalcheva, S.; Sikik, E.; Koonen, E. [SCK-CEN, BR2 Reactor, Boeretang 200, Mol, 2400 (Belgium)

2013-07-01T23:59:59.000Z

480

Multi-criteria decision making on the energy supply configuration of autonomous desalination units  

Science Journals Connector (OSTI)

Abstract The important energy requirements for the desalination process impose especially in autonomous and decentralized plants supplied by Renewable Energy Sources (RES). In this paper, five alternative energy generation topologies of Reverse Osmosis desalination process are evaluated. The proposed topologies assessed in terms of economic, environmental, technological and societal indices are compared using multi-criteria analysis, namely the Analytic Hierarchy Process (AHP) and the Preference Ranking Organization Method for Enrichment of Evaluations (PROMETHEE). Ranking of topologies resulted in the selection of direct connection and hybrid configuration as optimum solutions. In case economic priorities prevail diesel generation should also be considered.

Dimitris Georgiou; Essam Sh. Mohammed; Stelios Rozakis

2015-01-01T23:59:59.000Z

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


481

Octet baryon magnetic moments in the chiral quark model with configuration mixing  

Science Journals Connector (OSTI)

The ColemanGlashow sum-rule for magnetic moments is always fulfilled in the chiral quark model, independently of SU(3) symmetry breaking. This is due to the structure of the wave functions, coming from the non-relativistic quark model. Experimentally, the ColemanGlashow sum-rule is violated by about ten standard deviations. To overcome this problem, two models of wave functions with configuration mixing are studied. One of these models violates the ColemanGlashow sum-rule to the right degree and also reproduces the octet baryon magnetic moments rather accurately.

Johan Linde; Tommy Ohlsson; Hkan Snellman

1998-01-01T23:59:59.000Z

482

Emergence of rotational bands in ab initio no-core configuration interaction calculations  

E-Print Network [OSTI]

Rotational bands have been observed to emerge in ab initio no-core configuration interaction (NCCI) calculations for p-shell nuclei, as evidenced by rotational patterns for excitation energies, electromagnetic moments, and electromagnetic transitions. We investigate the ab initio emergence of nuclear rotation in the Be isotopes, focusing on 9Be for illustration, and make use of basis extrapolation methods to obtain ab initio predictions of rotational band parameters for comparison with experiment. We find robust signatures for rotational motion, which reproduce both qualitative and quantitative features of the experimentally observed bands.

M. A. Caprio; P. Maris; J. P. Vary; R. Smith

2015-02-04T23:59:59.000Z

483

INTERNATIONAL UNION OF OPERATING ENGINEERS NATIONAL HAZMAT PROGRAM - ADAMANT CIRCULAR SAW OENHP{number_sign}: 2001-05, VERSION A  

SciTech Connect (OSTI)

Florida International University's (FIU) Hemispheric Center for Environmental Technology (HCET) evaluated five saws for their effectiveness in cutting up specially prepared fiberglass-reinforced plywood crates. These crates were built as surrogates for crates that presently hold radioactive contaminated glove boxes at the Department of Energy's (DOE) Los Alamos facility. The Adamant circular saw was assessed on August 14, 2001. During the FIU test of efficacy, a team from the Operating Engineers National Hazmat Program (OENHP) evaluated the occupational safety and health issues associated with this technology. The Adamant was only used during a limited ''test'' on a regular plywood crate due to safety considerations of the tool for this application. The Adamant circular saw, a counter-rotating twin-cutter, constructed with blades that work differently than conventional cutting wheels with twin blades, each rotating in opposite directions. It is used to cut wood and metals. Each blade is approximately 8 3/4 inches in diameter with a maximum cutting depth of 2 1/2 inches. The machine has two rotation speeds: 1,900 and 2,900 rotations per minute (rpm). The saw is operated with an interlocked, guarded trigger switch located at the end of the saw opposite the cutting blades. To operate the saw, the safety interlock must be depressed prior to powering the saw with the trigger control. The saw is supported by a handle at the front of the saw near the cutting blades. The top part of the blades is guarded near the handle, with approximately three-fourths of the face of the blades exposed. The Adamant circular saw is an innovative technology used to cut metals and wood. Its safety features include: interlocking switch for powering the saw, overload indicator and shutoff, and an electronic brake that stops the engine immediately when the start button is released. The top part of the blades is guarded near the motor. With approximately three-fourths of the face of the blades open, the operator is exposed to the potential risk of serious and minor cuts and abrasions when using and handling the saw. There is also potential for damage to the blades if the saw is not stored properly. Without guarding on the lower part of the blades, these can be damaged if the saw is dropped or rested on the cutting blades. Based upon the industrial hygiene sampling conducted for the other four saws demonstrated at FIU, noise levels, nuisance dust, and airborne fiberglass may be a problem when using this technology for the cutting of fiberglass-reinforced plywood crates. No industrial hygiene sampling was conducted while the Adamant saw was in use. Engineering controls should be used to eliminate these problems whenever possible. Where this is not possible, administrative controls, training, and proper personal protective equipment (PPE) should be used. Respirators should be used if engineering controls do not sufficiently control the dust or fiberglass generated. Respirators should be equipped with an organic vapor and acid gas cartridge with High Efficiency Particulate Air (HEPA) filter, since during the demonstration, the workers complained of an odd smell, which may have been the breakdown of the fiberglass.

Unknown

2002-01-01T23:59:59.000Z

484

INTERNATIONAL UNION OF OPERATING ENGINEERS NATIONAL HAZMAT PROGRAM - EVOLUTION 180 CIRCULAR SAW OENHP: 2001-03, VERSION A  

SciTech Connect (OSTI)

Florida International University's (FIU) Hemispheric Center for Environmental Technology (HCET) evaluated five saws for their effectiveness in cutting specially prepared fiberglass-reinforced plywood crates. These crates were built as surrogates for crates that presently hold radioactively contaminated gloveboxes at the Department of Energy's (DOE) Los Alamos facility. The Evolution 180 circular saw was assessed on August 14, 2001. During the FIU test of efficacy, a team from the Operating Engineers National Hazmat Program (OENHP) evaluated the occupational safety and health issues associated with this technology. The Evolution 180 is a portable, metal cutting circular saw with a 7-inch diameter blade. The blade is contained within the main housing and has a retractable lower blade guard to prevent operator access to the blade during operation and shutdown. The saw is equipped with a chip collector. The maximum cutting thickness for metal is one-quarter inch and can cut steel tubing and pipe 2 inches in diameter. The unit is operated with an on/off guarded trigger switch and is supported with the hand guide mounted to the side of the saw. An adjustable lever sets the depth of the cut. The machine's circuitry will automatically shut the saw motor off if excessive overload is detected during operation. The one-half hour demonstration involved vertical and horizontal cuts and blade changes. During this process, operators experienced binding of the saw. This caused the blade to become hot, causing the sawdust collected in the chip collector to smoke. Care should be exercised to use the appropriate blade for the application, operator training, and personal protective equipment (PPE). Personal noise sampling indicated that neither worker was over the Occupational Safety and Health Administration's (OSHA) Action Level of 85 decibels (dBA) with time-weighted averages (TWA's) of 69.1 and 68.8 dBA. The personal noise sample taken during the special demonstration with the stainless steel plate had a TWA of 69.8 dBA. These data are not entirely representative as they were gathered during a simulation and not at the actual worksite. Additional sampling should be conducted on-site, but the workers should wear hearing protection until it is determined that it is no longer necessary. The total nuisance dust sample for the Evolution 180 circular saw was 3.5 milligrams per cubic meter (mg/m{sup 3}), which is lower than the OSHA Permissible Exposure Limit (PEL) of 15 mg/m{sup 3} and the American Conference of Governmental Industrial Hygienists' (ACGIH) Threshold Limit Value (TLV) of 10 mg/m{sup 3}. The fiber analysis yielded 1.74 fibers per cubic centimeter (f/cc), which is above the PEL of 1 f/cc. Although the nuisance dust levels were low, fiberglass dust levels were higher than the PEL. Since fiberglass dust is known to be a strong skin irritant and a possible human carcinogen, the workers should continue to wear appropriate suits and gloves, as well as a full-face air-purifying respirator. The respirator should be equipped with a combination organic vapor and acid gas cartridge in combination with a High Particulate Air (HEPA) filter, since particulate filter, since during the demonstration, the workers complained of an odd smell, which may have been from the breakdown of the fiberglass.

Unknown

2002-01-25T23:59:59.000Z

485

Variable Circular Collimator in Robotic Radiosurgery: A Time-Efficient Alternative to a Mini-Multileaf Collimator?  

SciTech Connect (OSTI)

Purpose: Compared with many small circular beams used in CyberKnife treatments, beam's eye view-shaped fields are generally more time-efficient for dose delivery. However, beam's eye view-shaping devices, such as a mini-multileaf collimator (mMLC), are not presently available for CyberKnife, although a variable-aperture collimator (Iris, 12 field diameters; 5-60 mm) is available. We investigated whether the Iris can mimic noncoplanar mMLC treatments using a limited set of principal beam orientations (nodes) to produce time-efficient treatment plans. Methods and Materials: The data from 10 lung cancer patients and the beam-orientation optimization algorithm 'Cycle' were used to generate stereotactic treatment plans (3 x 20 Gy) for a CyberKnife virtually equipped with a mMLC. Typically, 10-16 favorable beam orientations were selected from 117 available robot node positions using beam's eye view-shaped fields with uniform fluence. Second, intensity-modulated Iris plans were generated by inverse optimization of nonisocentric circular candidate beams targeted from the same nodes selected in the mMLC plans. The plans were evaluated using the mean lung dose, lung volume receiving {>=}20 Gy, conformality index, number of nodes, beams, and monitor units, and estimated treatment time. Results: The mMLC plans contained an average of 12 nodes and 11,690 monitor units. For a comparable mean lung dose, the Iris plans contained 12 nodes, 64 beams, and 21,990 monitor units. The estimated fraction duration was 12.2 min (range, 10.8-13.5) for the mMLC plans and 18.4 min (range, 12.9-28.5) for the Iris plans. In contrast to the mMLC plans, the treatment time for the Iris plans increased with an increasing target volume. The Iris plans were, on average, 40% longer than the corresponding mMLC plans for small targets (<80 cm{sup 3}) and {<=}121% longer for larger targets. For a comparable conformality index, similar results were obtained. Conclusion: For stereotactic lung irradiation, time-efficient and high-quality plans were obtained for robotic-controlled noncoplanar treatments using a mMLC. Iris is a time-efficient alternative for small targets, with similar or better plan quality.

Water, Steven van de, E-mail: s.vandewater@erasmusmc.nl [Department of Radiation Oncology, Erasmus Medical Center-Daniel den Hoed Cancer Center, Rotterdam (Netherlands); Hoogeman, Mischa S.; Breedveld, Sebastiaan; Nuyttens, Joost J.M.E. [Department of Radiation Oncology, Erasmus Medical Center-Daniel den Hoed Cancer Center, Rotterdam (Netherlands); Schaart, Dennis R. [Department of Radiation Detection and Medical Imaging, Delft University of Technology, Delft (Netherlands); Heijmen, Ben J.M. [Department of Radiation Oncology, Erasmus Medical Center-Daniel den Hoed Cancer Center, Rotterdam (Netherlands)

2011-11-01T23:59:59.000Z

486

Microsoft Word - Configuring Workstations for use with the PARS II System.V3.0.doc  

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

30/2010 30/2010 1 PROCEDURES 1.1 Introduction Most users will be comfortable with contacting their IT Helpdesk for completing the instructions below. However, If you have Admin rights on your workstation, and are comfortable with making configuration changes to it, you may follow these directions yourself. 1.2 Installation of Dekker, Ltd. ActiveX Control 1. Log onto the workstation to be configured using an ID/Password that can perform administrative functions on the workstation being configured (e.g. Install software, add Active-X controls). Note that administrative access is only required for initial workstation configuration, not ongoing operation of the PARS II application on the workstation. 2. Check hardware, software and network requirements as identified in section 2 below.

487

Evaluation of Ensemble Configurations for the Analysis and Prediction of Heavy-Rain-Producing Mesoscale Convective Systems  

Science Journals Connector (OSTI)

This study investigates probabilistic forecasts made using different convection-allowing ensemble configurations for a three-day period in June 2010 when numerous heavy-rain-producing mesoscale convective systems (MCSs) occurred in the United ...

Russ S. Schumacher; Adam J. Clark

2014-11-01T23:59:59.000Z

488

Influence of a dipole magnetic field on the topology of toroidal magnetic configurations around a gravitating body  

Science Journals Connector (OSTI)

The topological structure of the toroidal magnetic field, which is affected by a dipole magnetic field, is studied. It is shown, that a dipole magnetic field is able to split the initial toroidal configuration...

Vladimir A. Osherovich; Erast B. Gliner

489

Optimization of membrane stack configuration for efficient hydrogen production in microbial reverse-electrodialysis electrolysis cells coupled  

E-Print Network [OSTI]

Optimization of membrane stack configuration for efficient hydrogen production in microbial reverse-electrodialysis 2013 Keywords: Microbial reverse-electrodialysis electrolysis cell Ammonium bicarbonate Hydrogen reverse electrodialysis (RED) stack into the MEC, which was called a microbial reverse-electrodialysis

490

Modeling Hot Mix Asphalt Compaction Using a Thermodynamics Based Compressible Viscoelastic Model within the Framework of Multiple Natural Configurations  

E-Print Network [OSTI]

asphalt (HMA) using the notion of multiple natural configurations. A thermodynamic framework is employed to study the non-linear dissipative response associated with HMA by specifying the forms for the stored energy and the rate of dissipation function...

Koneru, Saradhi

2011-10-21T23:59:59.000Z

491

Measurement of rotordynamic coefficients for a high-speed flexure pivot tilting-pad bearing(load between pad) configuration  

E-Print Network [OSTI]

] .......................................................................................2 Figure 3. Main test section of the test rig .....................................................................................9 Figure 4. Shaker-stinger configuration (NDE side...)....................................................................10 Figure 5. Static loader assembly (NDE side)..............................................................................11 Figure 6. Thermocouples location on the FPB...

Al-Ghasem, Adnan Mahmoud

2005-08-29T23:59:59.000Z

492

Mutual Coupling Reduction between Closely Spaced U-slot Patch Antennas by Optimizing Array Configuration and its Applications in MIMO  

E-Print Network [OSTI]

is to find the array configuration that providesthe minimum mutual coupling between elements. The U-slot patch antenna is versatile antennas that because of its features like wide bandwidth,multi-band resonance and the ease of achieving different...

Niakan, Nahal

2014-05-31T23:59:59.000Z

493

Traveling wave current drive theory for an arbitrary m-polar configuration  

SciTech Connect (OSTI)

An extension of the formalism employed to describe current drive in magnetized plasmas by means of traveling magnetic fields (or double-helix configuration) is presented. In all previous theoretical studies, only driving fields with dipolar topology have been employed and the figure of merit of the current drive mechanism has never been analyzed in terms of the dissipation in the power feeding circuit. In this paper, we show how to express the model equations in terms of the current amplitude in the coils, for an arbitrary number of equally spaced coils wound around the plasma column. We present a brief review of the existing theory and a theoretical formulation, valid for an arbitrary m-polar helical symmetry, which removes the above mentioned complications and limitations. In the limit of straight coils, our magnetic field expression agrees exactly with well-established results of the literature for rotating magnetic field current drive. Finally, we present initial numerical results from a recently developed code which consistently compares the steady driven nonlinear Hall currents and steady fields, corresponding to different configurations in terms of the Ohmic dissipation in the helical coils and discuss future perspectives.

Duarte, V. N. [Instituto de Fisica, Universidade de Sao Paulo, 05508-090 Sao Paulo-SP (Brazil); Clemente, R. A. [Instituto de Fisica Gleb Wataghin, Universidade Estadual de Campinas, 13083-859 Campinas-SP (Brazil); Farengo, R. [Centro Atomico Bariloche and Instituto Balseiro, S. C. de Bariloche (8400), RN (Argentina)

2013-03-15T23:59:59.000Z

494

H{sub 3}{sup +} molecular ion in a magnetic field: Linear parallel configuration  

SciTech Connect (OSTI)

A detailed study of the ground state of the H{sub 3}{sup +} molecular ion in linear configuration, parallel to the magnetic field direction, and its low-lying {sigma}, {pi}, and {delta} states is carried out for magnetic fields B=0-4.414x10{sup 13} G in the Born-Oppenheimer approximation. The variational method is employed with a single trial function which includes electronic correlation in the form exp({gamma}r{sub 12}), where {gamma} is a variational parameter. It is shown that the quantum numbers of the state of the lowest total energy (ground state) depend on the magnetic field strength. The ground state evolves from the spin-singlet {sup 1}{sigma}{sub g} state for weak magnetic fields B(less-or-similar sign)5x10{sup 8} G to a weakly bound spin-triplet {sup 3}{sigma}{sub u} state for intermediate fields and, eventually, to a spin-triplet {sup 3}{pi}{sub u} state for 5x10{sup 10}(less-or-similar sign)B(less-or-similar sign)4.414x10{sup 13} G. Local stability of the linear parallel configuration with respect to possible small deviations is checked.

Turbiner, A. V.; Guevara, N. L.; Lopez Vieyra, J. C. [Instituto de Ciencias Nucleares, Universidad Nacional Autonoma de Mexico, Apartado Postal 70-543, 04510 Mexico, D.F. (Mexico)

2007-05-15T23:59:59.000Z

495

Project W-211, initial tank retrieval systems, retrieval control system software configuration management plan  

SciTech Connect (OSTI)

This Software Configuration Management Plan (SCMP) provides the instructions for change control of the W-211 Project, Retrieval Control System (RCS) software after initial approval/release but prior to the transfer of custody to the waste tank operations contractor. This plan applies to the W-211 system software developed by the project, consisting of the computer human-machine interface (HMI) and programmable logic controller (PLC) software source and executable code, for production use by the waste tank operations contractor. The plan encompasses that portion of the W-211 RCS software represented on project-specific AUTOCAD drawings that are released as part of the C1 definitive design package (these drawings are identified on the drawing list associated with each C-1 package), and the associated software code. Implementation of the plan is required for formal acceptance testing and production release. The software configuration management plan does not apply to reports and data generated by the software except where specifically identified. Control of information produced by the software once it has been transferred for operation is the responsibility of the receiving organization.

RIECK, C.A.

1999-02-23T23:59:59.000Z

496

Recovery of the global magnetic field configuration of 78 Virginis from Stokes IQUV line profiles  

E-Print Network [OSTI]

The surface magnetic field configuration of the Ap star HD 118022 (78 Vir) has been reconstructed in the framework of the magnetic charge distribution (MCD) method from the analysis of Stokes $IQUV$ spectra obtained using the MuSiCoS spectropolarimeter at Pic du Midi Observatory. Magnetically-sensitive Fe~{\\sc ii} lines were primarily employed in the analysis, supposing that iron is evenly distributed over the stellar surface. We show that the Stokes $IQUV$ profile shapes and variations of 78 Vir can be approximately fit assuming a global magnetic field configuration described by a slightly decentered, inclined magnetic dipole of polar surface intensity approximately 3.3~kG. The derived inclinations of the stellar rotational axis to the line of sight $i=24\\pm 5\\degr$ as well as to the magnetic dipole axis $\\beta=124\\pm5\\degr$ are in good agreement with previous estimations by other authors, whereas the sky-projected position angle\\thanks{$\\Omega$ increases clockwise from the axis to the North Celestial Pole and relates to the azimuth angle $\\Theta$ specified by Landolfi at al.~(\\cite{Landolfi+93}) as $\\Omega=360\\degr-\\Theta$.} of the stellar rotation axis $\\Omega\\sim110\\degr$ is reported here for the first time. In addition, several lines of Cr~{\\sc ii} and Ti~{\\sc ii} were studied, yielding evidence for non-uniform surface distributions of these elements, and magnetic field results similar to those derived from Fe.

V. R. Khalack; G. A. Wade

2006-01-30T23:59:59.000Z

497

Detector Configurations for Equivalence Principle Tests with Strong Separation of Signal from Noise  

Science Journals Connector (OSTI)

Testing the Equivalence Principle (EP) at a level of accuracy substantially higher than the present state of the art requires resolving a very small signal out of the instruments intrinsic noise and also the noise associated with the instruments motion and gravity gradients. In the test of the Equivalence Principle in an Einstein Elevator under development by our team the acceleration detector spins about a horizontal axis while free falling for about 25 s inside a co?moving capsule released from a stratospheric balloon. The characteristics of the instrument package and the configuration of the detector play a key role in the ability to extract an EP violation signal at the desired threshold level out of dynamics?related noise. Numerical simulations of the detectors dynamics in the presence of relevant perturbations having assumed realistic errors and construction imperfections show the merits of the detector configuration selected. The results illustrate that the effects of dynamics and gravity gradients near or at the signal frequency can be limited to levels much smaller than the expected threshold sensitivity of the detector.

E. C. Lorenzini; I. I. Shapiro; J. Ashenberg; C. Bombardelli; P. N. Cheimets; V. Iafolla; D. M. Lucchesi; S. Nozzoli; F. Santoli; S. Glashow

2006-01-01T23:59:59.000Z

498

Kinetic Effects on the Stability Properties of Field-reversed Configurations: I. Linear Stability  

SciTech Connect (OSTI)

New computational results are presented which advance the understanding of the stability properties of the Field-Reversed Configuration (FRC). We present results of hybrid and two-fluid (Hall-MHD) simulations of prolate FRCs. The n = 1 tilt instability mechanism and growth rate reduction mechanisms are investigated in detail including resonant particle effects, finite Larmor radius and Hall stabilization, and profile effects. It is shown that the Hall effect determines the mode rotation and the change in the linear mode structure in the kinetic regime; however, the reduction in the growth rate is mostly due to finite Larmor radius effects. Resonant wave-particle interactions are studied as a function of (a) elongation, (b) the kinetic parameter S*, which is proportional to the ratio of the separatrix radius to the thermal ion Larmor radius, and (c) the separatrix shape. It is demonstrated that, contrary to the usually assumed stochasticity of the ion orbits in the FRC, a large fraction of the orbits are regular in long configurations when S* is small. A stochasticity condition is found, and a scaling with the S* parameter is presented. Resonant particle effects are shown to maintain the instability in the large gyroradius regime regardless of the separatrix shape.

Elena V. Belova; Ronald C. Davidson; Hantao Ji; Masaaki Yamada

2003-01-28T23:59:59.000Z

499

SCALE-4 Analysis of LaSalle Unit 1 BWR Commercial Reactor Critical Configuration  

SciTech Connect (OSTI)

Five commercial reactor criticals (CRCs) for the LaSalle Unit 1 boiling-water reactor have been analyzed using KENO V.a, the Monte Carlo criticality code of the SCALE 4 code system. The irradiated fuel assembly isotopics for the criticality analyses were provided by the Waste Package Design team at the Yucca Mountain Project in the United States, who performed the depletion calculations using the SAS2H sequence of SCALE 4. The reactor critical measurements involved two beginning-of-cycle and three middle-of-cycle configurations. The CRCs involved relatively low-cycle burnups, and therefore contained a relatively high gadolinium poison content in the reactor assemblies. This report summarizes the data and methods used in analyzing the critical configurations and assesses the sensitivity of the results to some of the modeling approximations used to represent the gadolinium poison distribution within the assemblies. The KENO V.a calculations, performed using the SCALE 44GROUPNDF5 ENDF/B-V cross-section library, yield predicted k{sub eff} values within about 1% {Delta}k/k relative to reactor measurements for the five CRCs using general 8-pin and 9-pin heterogeneous gadolinium poison pin assembly models.

Gauld, I.C.

2000-03-16T23:59:59.000Z