National Library of Energy BETA

Sample records for n2 purged characteristics

  1. Purged window apparatus utilizing heated purge gas

    DOE Patents [OSTI]

    Ballard, Evan O. (Los Alamos, NM)

    1984-01-01

    A purged window apparatus utilizing tangentially injected heated purge gases in the vicinity of electromagnetic radiation transmitting windows, and a tapered external mounting tube to accelerate these gases to provide a vortex flow on the window surface and a turbulent flow throughout the mounting tube. Use of this apparatus prevents backstreaming of gases under investigation which are flowing past the mouth of the mounting tube which would otherwise deposit on the windows. Lengthy spectroscopic investigations and analyses can thereby be performed without the necessity of interrupting the procedures in order to clean or replace contaminated windows.

  2. Purge water management system

    DOE Patents [OSTI]

    Cardoso-Neto, J.E.; Williams, D.W.

    1995-01-01

    A purge water management system is described for effectively eliminating the production of purge water when obtaining a groundwater sample from a monitoring well. In its preferred embodiment, the purge water management system comprises an expandable container, a transportation system, and a return system. The purge water management system is connected to a wellhead sampling configuration, typically permanently installed at the well site. A pump, positioned with the monitoring well, pumps groundwater through the transportation system into the expandable container, which expands in direct proportion with volume of groundwater introduced, usually three or four well volumes, yet prevents the groundwater from coming into contact with the oxygen in the air. After this quantity of groundwater has been removed from the well, a sample is taken from a sampling port, after which the groundwater in the expandable container can be returned to the monitoring well through the return system. The purge water management system prevents the purge water from coming in contact with the outside environment, especially oxygen, which might cause the constituents of the groundwater to oxidize. Therefore, by introducing the purge water back into the monitoring well, the necessity of dealing with the purge water as a hazardous waste under the Resource Conservation and Recovery Act is eliminated.

  3. Purge water management system

    DOE Patents [OSTI]

    Cardoso-Neto, Joao E. (North Augusta, SC); Williams, Daniel W. (Aiken, SC)

    1996-01-01

    A purge water management system for effectively eliminating the production of purge water when obtaining a groundwater sample from a monitoring well. In its preferred embodiment, the purge water management system comprises an expandable container, a transportation system, and a return system. The purge water management system is connected to a wellhead sampling configuration, typically permanently installed at the well site. A pump, positioned with the monitoring well, pumps groundwater through the transportation system into the expandable container, which expands in direct proportion with volume of groundwater introduced, usually three or four well volumes, yet prevents the groundwater from coming into contact with the oxygen in the air. After this quantity of groundwater has been removed from the well, a sample is taken from a sampling port, after which the groundwater in the expandable container can be returned to the monitoring well through the return system. The purge water management system prevents the purge water from coming in contact with the outside environment, especially oxygen, which might cause the constituents of the groundwater to oxidize. Therefore, by introducing the purge water back into the monitoring well, the necessity of dealing with the purge water as a hazardous waste under the Resource Conservation and Recovery Act is eliminated.

  4. Automated Purge Valve Joseph Edward Farrell, III.

    E-Print Network [OSTI]

    Wood, Stephen L.

    Automated Purge Valve by Joseph Edward Farrell, III. Bachelor of Science Marine Engineering the undersigned committee hereby approve the attached thesis Automated Purge Valve by Joseph Edward Farrell, III.D. Department Head Department of Marine and Environmental Systems #12;iii Abstract Title: Automated Purge Valve

  5. Selective purge for hydrogenation reactor recycle loop

    SciTech Connect (OSTI)

    Baker, Richard W.; Lokhandwala, Kaaeid A.

    2001-01-01

    Processes and apparatus for providing improved contaminant removal and hydrogen recovery in hydrogenation reactors, particularly in refineries and petrochemical plants. The improved contaminant removal is achieved by selective purging, by passing gases in the hydrogenation reactor recycle loop or purge stream across membranes selective in favor of the contaminant over hydrogen.

  6. Coal slurry fuel supply and purge system

    DOE Patents [OSTI]

    McDowell, Robert E. (Fairview, PA); Basic, Steven L. (Hornell, NY); Smith, Russel M. (North East, PA)

    1994-01-01

    A coal slurry fuel supply and purge system for a locomotive engines is disclosed which includes a slurry recirculation path, a stand-by path for circulating slurry during idle or states of the engine when slurry fuel in not required by the engine, and an engine header fluid path connected to the stand-by path, for supplying and purging slurry fuel to and from fuel injectors. A controller controls the actuation of valves to facilitate supply and purge of slurry to and from the fuel injectors. A method for supplying and purging coal slurry in a compression ignition engine is disclosed which includes controlling fluid flow devices and valves in a plurality of fluid paths to facilitate continuous slurry recirculation and supply and purge of or slurry based on the operating state of the engine.

  7. Well purge and sample apparatus and method

    DOE Patents [OSTI]

    Schalla, Ronald (Kennewick, WA); Smith, Ronald M. (Richland, WA); Hall, Stephen H. (Kennewick, WA); Smart, John E. (Richland, WA); Gustafson, Gregg S. (Redmond, WA)

    1995-01-01

    The present invention specifically permits purging and/or sampling of a well but only removing, at most, about 25% of the fluid volume compared to conventional methods and, at a minimum, removing none of the fluid volume from the well. The invention is an isolation assembly with a packer, pump and exhaust, that is inserted into the well. The isolation assembly is designed so that only a volume of fluid between the outside diameter of the isolation assembly and the inside diameter of the well over a fluid column height from the bottom of the well to the top of the active portion (lower annulus) is removed. The packer is positioned above the active portion thereby sealing the well and preventing any mixing or contamination of inlet fluid with fluid above the packer. Ports in the wall of the isolation assembly permit purging and sampling of the lower annulus along the height of the active portion.

  8. Well purge and sample apparatus and method

    DOE Patents [OSTI]

    Schalla, R.; Smith, R.M.; Hall, S.H.; Smart, J.E.; Gustafson, G.S.

    1995-10-24

    The present invention specifically permits purging and/or sampling of a well but only removing, at most, about 25% of the fluid volume compared to conventional methods and, at a minimum, removing none of the fluid volume from the well. The invention is an isolation assembly with a packer, pump and exhaust, that is inserted into the well. The isolation assembly is designed so that only a volume of fluid between the outside diameter of the isolation assembly and the inside diameter of the well over a fluid column height from the bottom of the well to the top of the active portion (lower annulus) is removed. The packer is positioned above the active portion thereby sealing the well and preventing any mixing or contamination of inlet fluid with fluid above the packer. Ports in the wall of the isolation assembly permit purging and sampling of the lower annulus along the height of the active portion. 8 figs.

  9. Benefits of evaporating FGD purge water

    SciTech Connect (OSTI)

    Shaw, W.A. [HPD, Plainfield, IL (United States)

    2008-03-15

    In the US and the European Union, scrubbers are installed on all new coal-fired power plants because their technology is considered the best available for removing SO{sub 2}. A zero liquid discharge (ZLD) system is the best technology for treating wet scrubber wastewate. With the future promising stricter limits on power plants' water use, ZLD systems that concentrate scrubber purge streams are sure to become as common as ZLD cooling tower blowdonw systems. 7 figs.

  10. Characterization of BCl3/N-2 plasmas

    E-Print Network [OSTI]

    Sia, S. F.

    2003-08-15

    Optical emission spectroscopy, quadrupole mass spectrometry, and electron density measurements were used to study the effect of the percentage of N-2 on the characteristics of BCl3/N-2 plasmas and their resulting etch processes. The etch rate of Ga...

  11. Purged window apparatus. [On-line spectroscopic analysis of gas flow systems

    DOE Patents [OSTI]

    Ballard, E.O.

    1982-04-05

    A purged window apparatus is described which utilizes tangentially injected heated purge gases in the vicinity of electromagnetic radiation transmitting windows and a tapered external mounting tube to accelerate these gases to provide a vortex flow on the window surface and a turbulent flow throughout the mounting tube thereby preventing backstreaming of flowing gases under investigation in a chamber to which a plurality of similar purged apparatus is attached with the consequent result that spectroscopic analyses can be undertaken for lengthy periods without the necessity of interrupting the flow for cleaning or replacing the windows due to contamination.

  12. Purge gas protected transportable pressurized fuel cell modules and their operation in a power plant

    DOE Patents [OSTI]

    Zafred, P.R.; Dederer, J.T.; Gillett, J.E.; Basel, R.A.; Antenucci, A.B.

    1996-11-12

    A fuel cell generator apparatus and method of its operation involves: passing pressurized oxidant gas and pressurized fuel gas into modules containing fuel cells, where the modules are each enclosed by a module housing surrounded by an axially elongated pressure vessel, and where there is a purge gas volume between the module housing and pressure vessel; passing pressurized purge gas through the purge gas volume to dilute any unreacted fuel gas from the modules; and passing exhaust gas and circulated purge gas and any unreacted fuel gas out of the pressure vessel; where the fuel cell generator apparatus is transportable when the pressure vessel is horizontally disposed, providing a low center of gravity. 11 figs.

  13. Purge gas protected transportable pressurized fuel cell modules and their operation in a power plant

    DOE Patents [OSTI]

    Zafred, Paolo R. (Pittsburgh, PA); Dederer, Jeffrey T. (Valencia, PA); Gillett, James E. (Greensburg, PA); Basel, Richard A. (Plub Borough, PA); Antenucci, Annette B. (Pittsburgh, PA)

    1996-01-01

    A fuel cell generator apparatus and method of its operation involves: passing pressurized oxidant gas, (O) and pressurized fuel gas, (F), into fuel cell modules, (10 and 12), containing fuel cells, where the modules are each enclosed by a module housing (18), surrounded by an axially elongated pressure vessel (64), where there is a purge gas volume, (62), between the module housing and pressure vessel; passing pressurized purge gas, (P), through the purge gas volume, (62), to dilute any unreacted fuel gas from the modules; and passing exhaust gas, (82), and circulated purge gas and any unreacted fuel gas out of the pressure vessel; where the fuel cell generator apparatus is transpatable when the pressure vessel (64) is horizontally disposed, providing a low center of gravity.

  14. Nitrogen Front Evolution in Purged Polymer Electrolyte Membrane Fuel Cell with Dead-Ended Anode

    E-Print Network [OSTI]

    Stefanopoulou, Anna

    Nitrogen Front Evolution in Purged Polymer Electrolyte Membrane Fuel Cell with Dead-Ended Anode plugging of the channels, and flooding of the gas diffusion layer. The observation of each phenomenon

  15. Whitey Swagelok SCHe Ball Valves Provide Isolation between SCHe Purge Lines C and D and the Process Vent

    SciTech Connect (OSTI)

    MISKA, C.R.

    2000-09-15

    These valves are 1/4 inch ball valves fabricated of 316 stainless steel. Packing is TFE (standard). They provide an isolation function betwen SCHe Purge Line C, (PV-V-*079), and Purge Line D, (PV-V-*080), and the Process Vent.

  16. Whitey Swagelok SCHe Ball Valves Provide Isolation between SCHe Purge Lines C and D and the Process Vent

    SciTech Connect (OSTI)

    VAN KATWIJK, C.

    2000-06-21

    These valves are 1/4 inch ball valves fabricated of 316 stainless steel. Packing is TFE (standard). They provide an isolation function between SCHe Purge Line C, (PV-V-*079), and Purge Line D, (PV-V-*080), and the Process Vent.

  17. Whitey Swagelok SCHe ball valves Provide Isolation between SCHe Purge Lines C and D and the Process Vent

    SciTech Connect (OSTI)

    MISKA, C.R.

    2000-09-03

    These valves are 1/4 inch ball valves fabricated of 316 stainless steel. Packing is TFE (standard). They provide an isolation function betwen SCHe Purge Line C, (PV-V-*079), and Purge Line D, (PV-V-*080), and the Process Vent.

  18. Optimization of purge cycle for dead-ended anode fuel cell Jixin Chen a,

    E-Print Network [OSTI]

    Stefanopoulou, Anna

    Optimization of purge cycle for dead-ended anode fuel cell operation Jixin Chen a, *, Jason B 9 March 2013 Keywords: Dead-ended anode Fuel cell optimization Hydrogen loss Carbon corrosion, University of Michigan, 2350 Hayward St., Ann Arbor, MI 48109, USA b Fuel Cell Stack Research, Research

  19. Self-filling and self-purging apparatus for detecting spontaneous radiation from substances in fluids

    DOE Patents [OSTI]

    Larson, I. Lauren (Oak Ridge, TN); Chiles, Marion M. (Knoxville, TN); Miller, V. Clint (Concord, TN)

    1993-01-01

    Disclosed herein is a radiation detector providing for the in situ automatic sampling of fluids containing substances emitting radiation, especially Cerenkov radiation. The detector permits sampling within well casings and is self-purging such that no additional provisions must be established for the storage and disposal of contaminated fluids.

  20. N=2 supersymmetric Pais-Uhlenbeck oscillator

    E-Print Network [OSTI]

    Ivan Masterov

    2015-05-29

    We construct an N=2 supersymmetric extension of the Pais-Uhlenbeck oscillator for distinct frequencies of oscillation. A link to a set of decoupled N=2 supersymmetric harmonic oscillators with alternating sign in the Hamiltonian is introduced. Symmetries of the model are discussed in detail. The investigation of a quantum counterpart of the constructed model shows that the corresponding Fock space contains negative norm states and the energy spectrum of the system is unbounded from below.

  1. Aero III/IV Sheet 2 Solutions 1 A. G. Walton 5 ' % n +c + 52 n 25 ' E% n +2 n 2E% n + ' %2 +2 n 2% n E2+ n 2%+

    E-Print Network [OSTI]

    Walton, Andrew G

    Aero III/IV Sheet 2 Solutions 1 A. G. Walton 1(i) 5 ' % n +c + 52 n 25 ' E% n +2 n 2E% n + ' %2 +2 #12;Aero III/IV Sheet 2 Solutions 2 A. G. Walton and let @ ' Z*2 (inside Then, U ' 2ZsE@ ' 2Ze 3Z*2

  2. An Extremal N=2 Superconformal Field Theory

    E-Print Network [OSTI]

    Nathan Benjamin; Ethan Dyer; A. Liam Fitzpatrick; Shamit Kachru

    2015-06-30

    We provide an example of an extremal chiral ${\\cal N}=2$ superconformal field theory at $c=24$. The construction is based on a ${\\mathbb Z}_2$ orbifold of the theory associated to the $A_{1}^{24}$ Niemeier lattice. The statespace is governed by representations of the sporadic group $M_{23}$.

  3. New Seiberg Dualities from N=2 Dualities

    E-Print Network [OSTI]

    Kazunobu Maruyoshi; Masato Taki; Seiji Terashima; Futoshi Yagi

    2009-09-01

    We propose a number of new Seiberg dualities of N=1 quiver gauge theories. The new Seiberg dualities originate in new S-dualities of N=2 superconformal field theories recently proposed by Gaiotto. N=2 S-dual theories deformed by suitable mass terms flow to our N=1 Seiberg dual theories. We show that the number of exactly marginal operators is universal for these Seiberg dual theories and the 't Hooft anomaly matching holds for these theories. These provide strong evidence for the new Seiberg dualities. Furthermore, we study in detail the Klebanov-Witten type theory and its dual as a concrete example. We show that chiral operators and their non-linear relations match between these theories. These arguments also give non-trivial consistency checks for our proposal.

  4. Thermodynamics of the N=2* flow

    E-Print Network [OSTI]

    Buchel, A S; Buchel, Alex; Liu, James T.

    2003-01-01

    We discuss the thermodynamics of the N=2*, SU(N) gauge theory at large 't Hooft coupling. The tool we use is the non-extremal deformation of the supergravity solution of Pilch and Warner (PW) [hep-th/0004063], dual to N=4, SU(N) gauge theory softly broken to N=2. We construct the exact non-extremal solution in five-dimensional gauged supergravity and further uplift it to ten dimensions. Turning to the thermodynamics, we analytically compute the leading correction in m/T to the free energy of the non-extremal D3 branes due to the PW mass deformation, and find that it is positive. We also demonstrate that the mass deformation of the non-extremal D3 brane geometry induces a temperature dependent gaugino condensate. We find that the standard procedure of extracting the N=2* gauge theory thermodynamic quantities from the dual supergravity leads to a violation of the first law of thermodynamics. We speculate on a possible resolution of this paradox.

  5. RSE Table N2.1 and N2.2. Relative Standard Errors for Tables N2.1 and N2.2

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: AlternativeMonthly","10/2015"Monthly","10/2015" ,"Release7Cubicthroughthe PriceThousanda Oxygenated55,453.9151 and N1.2.N2.1

  6. Pure N=2 Super Yang-Mills and Exact WKB

    E-Print Network [OSTI]

    Amir-Kian Kashani-Poor; Jan Troost

    2015-04-30

    We apply exact WKB methods to the study of the partition function of pure N=2 epsilon_i-deformed gauge theory in four dimensions in the context of the 2d/4d correspondence. We study the partition function at leading order in epsilon_2/epsilon_1 (i.e. at large central charge) and in an expansion in epsilon_1. We find corrections of the form ~ exp[- SW periods / epsilon_1] to this expansion. We attribute these to the exchange of the order of summation over gauge instanton number and over powers of epsilon_1 when passing from the Nekrasov form of the partition function to the topological string theory inspired form. We conjecture that such corrections should be computable from a worldsheet perspective on the partition function. Our results follow upon the determination of the Stokes graphs associated to the Mathieu equation with complex parameters and the application of exact WKB techniques to compute the Mathieu characteristic exponent.

  7. Pure N=2 Super Yang-Mills and Exact WKB

    E-Print Network [OSTI]

    Kashani-Poor, Amir-Kian

    2015-01-01

    We apply exact WKB methods to the study of the partition function of pure N=2 epsilon_i-deformed gauge theory in four dimensions in the context of the 2d/4d correspondence. We study the partition function at leading order in epsilon_2/epsilon_1 (i.e. at large central charge) and in an expansion in epsilon_1. We find corrections of the form ~ exp[- SW periods / epsilon_1] to this expansion. We attribute these to the exchange of the order of summation over gauge instanton number and over powers of epsilon_1 when passing from the Nekrasov form of the partition function to the topological string theory inspired form. We conjecture that such corrections should be computable from a worldsheet perspective on the partition function. Our results follow upon the determination of the Stokes graphs associated to the Mathieu equation with complex parameters and the application of exact WKB techniques to compute the Mathieu characteristic exponent.

  8. Spent Nuclear Fuel (SNF) Project Cask and MCO Helium Purge System Design Review Completion Report Project A.5 and A.6

    SciTech Connect (OSTI)

    ARD, K.E.

    2000-04-19

    This report documents the results of the design verification performed on the Cask and Multiple Canister Over-pack (MCO) Helium Purge System. The helium purge system is part of the Spent Nuclear Fuel (SNF) Project Cask Loadout System (CLS) at 100K area. The design verification employed the ''Independent Review Method'' in accordance with Administrative Procedure (AP) EN-6-027-01.

  9. Spent nuclear fuel project cold vacuum drying facility vacuum and purge system design description

    SciTech Connect (OSTI)

    IRWIN, J.J.

    1998-11-30

    This document provides the System Design Description (SDD) for the Cold Vacuum Drying Facility (CVDF) Vacuum and Purge System (VPS) . The SDD was developed in conjunction with HNF-SD-SNF-SAR-O02, Safety Analysis Report for the Cold Vacuum Drying Facility, Phase 2, Supporting Installation of Processing Systems (Garvin 1998), The HNF-SD-SNF-DRD-002, 1998, Cold Vacuum Drying Facility Design Requirements, and the CVDF Design Summary Report. The SDD contains general descriptions of the VPS equipment, the system functions, requirements and interfaces. The SDD provides references for design and fabrication details, operation sequences and maintenance. This SDD has been developed for the SNFP Operations Organization and shall be updated, expanded, and revised in accordance with future design, construction and startup phases of the CVDF until the CVDF final ORR is approved.

  10. Photometric on-line monitor for total oxidants in the ports purge cascade

    SciTech Connect (OSTI)

    Maddox, W.L.

    1990-12-01

    A proposed scheme for the continuous, on-line monitoring of the total concentration of oxidizing (fluorinating) gases in the top purge section of a gaseous diffusion cascade was evaluated using simulated process conditions in a laboratory. The scheme involves the reaction of the oxidizing gases in a sample stream with sodium chloride to produce chlorine, which is then measured with an ultraviolet photometer to yield a value for total oxidant concentration. This report describes the experimental apparatus used in studying this method and presents the resulting data and conclusions. The study found that the technique would work under some conditions, but would be troublesome and probably undependable if implemented as a real-time process monitor. During the study, it was discovered that the photometric approach could provide a measurement of total oxidant concentration without resorting to the salt reaction. 5 refs., 4 figs., 2 tabs.

  11. N=2 String as a Topological Conformal Algebra

    E-Print Network [OSTI]

    J. Gomis; H. Suzuki

    1991-11-28

    We prove that critical and subcritical N=2 string theory gives a realization of an N=2 superfield extension of the topological conformal algebra. The essential observation is the vanishing of the background charge.

  12. Superfield Realizations of $N=2$ Super-$W_3$

    E-Print Network [OSTI]

    E. Ivanov; S. Krivonos

    1992-04-10

    We present a manifestly $N=2$ supersymmetric formulation of $N=2$ super-$W_3$ algebra (its classical version) in terms of the spin 1 and spin 2 supercurrents. Two closely related types of the Feigin-Fuchs representation for these supercurrents are found: via two chiral spin $\\frac{1}{2}$ superfields generating $N=2$ extended $U(1)$ Kac-Moody algebras and via two free chiral spin 0 superfields. We also construct a one-parameter family of $N=2$ super Boussinesq equations for which $N=2$ super-$W_3$ provides the second hamiltonian structure.

  13. Renormalizable N=2 supersymmetric and gauge invariant interactions from the N=2 harmonic superspace with central charges

    SciTech Connect (OSTI)

    Saidi, E.H. (Laboratoire de Physique Theorique, Faculte de Sciences, Battouta, Rabat (MA))

    1987-01-01

    The N=2 harmonic superspace in the presence of central charges is developed. Renormalizable interactions unusual in N=2 supersymmetric theories are derived in a consistent way. Symmetries generated by the central charges are discussed. A certain equivalence between N=2 harmonic superspace with and without central charges is established. An Abelian generalization of the model is given.

  14. Evaluation of the Effectiveness of a New Technology for Extraction of Insoluble Impurities from Nuclear Power Plant Steam Generators with Purge Water

    SciTech Connect (OSTI)

    Bud'ko, I. O.; Zhukov, A. G.

    2013-11-15

    An experimental technology for the removal of insoluble impurities from a horizontal steam generator with purge water during planned shutdowns of the power generating unit is improved through a more representative determination of the concentration of impurities in the purge water ahead of the water cleanup facility and a more precise effective time for the duration of the purge process. Tests with the improved technique at power generating unit No. 1 of the Rostov Nuclear Power Plant show that the efficiency with which insoluble impurities are removed from the steam generator volume was more than two orders of magnitude greater than under the standard regulations.

  15. Measurement of Hydrogen Purge Rates in Parabolic Trough Receiver Tubes: Preprint

    SciTech Connect (OSTI)

    Glatzmaier, G. C.

    2010-10-01

    The purpose of this research is to investigate and develop methods to remove hydrogen centrally from commercial parabolic trough power plants. A mathematical model was developed that tracks the generation and transport of hydrogen within an operating plant. Modeling results predicted the steady-state partial pressure of hydrogen within the receiver annuli to be ~1 torr. This result agrees with measured values for the hydrogen partial pressure. The model also predicted the rate at which hydrogen must be actively removed from the expansion tank to reduce the partial pressure of hydrogen within the receiver annuli to less than 0.001 torr. Based on these results, mitigation strategies implemented at operating parabolic trough power plants can reduce hydrogen partial pressure to acceptable levels. Transient modeling predicted the time required to reduce the hydrogen partial pressures within receiver annuli to acceptable levels. The times were estimated as a function of bellows temperature, getter quantity, and getter temperature. This work also includes an experimental effort that will determine the time required to purge hydrogen from a receiver annulus with no getter.

  16. Combustion oscillation: Chemical control showing mechanistic link to recirculation zone purge time

    SciTech Connect (OSTI)

    Gemmen, R.S.; Richards, G.A.; Yip, M.J.; Norton, T.S.

    1995-12-01

    Active control mechanisms are being examined for lean premix combustion applications, such as gas turbine generators. Lean premix combustors are susceptible to large combustion oscillations, particularly when driven very lean to achieve low NOx. While past design work has been focussed on understanding the source of the oscillation and modifying the combustor to avoid such oscillations, commercial combustion designers have more recently considered applying new control elements. As part of the U.S. Department of Energy`s Advanced Gas Turbine Systems Program, the Morgantown Energy Technology Center is investigating various active control techniques. This paper presents results from experiments studying the effect of pilot fuel modulation on combustor oscillation and pollutant emissions for a pilot stabilized dump swirl combustor, typical of gas turbine combustors. The results show that a significant level of attenuation can be achieved in the combustor pressure oscillation (50 to 90 percent) while only moderately affecting pollutant emissions. The control mechanism producing the attenuation is shown to be purely chemical in nature, rather than fluid mechanic. In addition, the frequency region over which control is obtained is shown to be related to the recirculation zone purge time. For this reason, control can be achieved at control frequencies much lower than the frequency of oscillation.

  17. (n, 2)-SETS HAVE FULL HAUSDORFF DIMENSION THEMIS MITSIS

    E-Print Network [OSTI]

    Jyväskylä, University of

    : dist(x, Le(a)) } is the infinite tube with axis Le(a) and cross-section radius . 2000 Mathematics measure n,2 which is invariant under the action of the orthogonal group. The elements of Gn that n,2({P Gn : d(P, P0) }) 2(n-2) for all P0 Gn, 1. So if A Gn and B is a maximal -separated

  18. N=2 Superfields and the M-Fivebrane

    E-Print Network [OSTI]

    N. D. Lambert; P. C. West

    1998-02-23

    In this paper we provide a manifestly N=2 supersymmetric formulation of the M-fivebrane in the presence of threebrane solitons. The superspace form of four-dimensional effective equations for the threebranes are readily obtained and yield the complete Seiberg-Witten equations of motion for N=2 super-Yang-Mills. A particularly simple derivation is given by introducing an N=2 superfield generalisation of the Seiberg-Witten differential.

  19. CO and N$_2$ desorption energies from water ice

    E-Print Network [OSTI]

    Fayolle, Edith C; Loomis, Ryan; Bergner, Jennifer; Graninger, Dawn M; Rajappan, Mahesh; berg, Karin I

    2015-01-01

    The relative desorption energies of CO and N$_2$ are key to interpretations of observed interstellar CO and N$_2$ abundance patterns, including the well-documented CO and N$_2$H$^+$ anti-correlations in disks, protostars and molecular cloud cores. Based on laboratory experiments on pure CO and N$_2$ ice desorption, the difference between CO and N$_2$ desorption energies is small; the N$_2$-to-CO desorption energy ratio is 0.93$\\pm$0.03. Interstellar ices are not pure, however, and in this study we explore the effect of water ice on the desorption energy ratio of the two molecules. We present temperature programmed desorption experiments of different coverages of $^{13}$CO and $^{15}$N$_2$ on porous and compact amorphous water ices and, for reference, of pure ices. In all experiments, $^{15}$N$_2$ desorption begins a few degrees before the onset of $^{13}$CO desorption. The $^{15}$N$_2$ and $^{13}$CO energy barriers are 770 and 866 K for the pure ices, 1034-1143 K and 1155-1298 K for different sub-monolayer co...

  20. Lorentz Symmetry Breaking in $\\mathcal{N} =2$ Superspace

    E-Print Network [OSTI]

    Faizal, Mir

    2015-01-01

    In this paper, we will study the deformation of a three dimensional theory with $\\mathcal{N} =2$ supersymmetry. This theory will be deformed by the presence of a constant vector field. This deformation will break the Lorentz symmetry. So, we will analyse this theory using $\\mathcal{N} =2$ aether superspace. The $\\mathcal{N} =2$ aether superspace will be obtained from a deformation of the usual $\\mathcal{N} =2$ superspace. This will be done by deforming the generators of the three dimensional $\\mathcal{N} =2$ supersymmetry. After analysing this deformed superalgebra, we will derive an explicit expression for the superspace propagators in this deformed superspace. Finally, we will use these propagators for performing perturbative calculations.

  1. Lorentz Symmetry Breaking in $\\mathcal{N} =2$ Superspace

    E-Print Network [OSTI]

    Mir Faizal; Prince A. Ganai

    2015-09-09

    In this paper, we will study the deformation of a three dimensional theory with $\\mathcal{N} =2$ supersymmetry. This theory will be deformed by the presence of a constant vector field. This deformation will break the Lorentz symmetry. So, we will analyse this theory using $\\mathcal{N} =2$ aether superspace. The $\\mathcal{N} =2$ aether superspace will be obtained from a deformation of the usual $\\mathcal{N} =2$ superspace. This will be done by deforming the generators of the three dimensional $\\mathcal{N} =2$ supersymmetry. After analysing this deformed superalgebra, we will derive an explicit expression for the superspace propagators in this deformed superspace. Finally, we will use these propagators for performing perturbative calculations.

  2. Potential Flammable Gas Explosion in the TRU Vent and Purge Machine

    SciTech Connect (OSTI)

    Vincent, A

    2006-04-05

    The objective of the analysis was to determine the failure of the Vent and Purge (V&P) Machine due to potential explosion in the Transuranic (TRU) drum during its venting and/or subsequent explosion in the V&P machine from the flammable gases (e.g., hydrogen and Volatile Organic Compounds [VOCs]) vented into the V&P machine from the TRU drum. The analysis considers: (a) increase in the pressure in the V&P cabinet from the original deflagration in the TRU drum including lid ejection, (b) pressure wave impact from TRU drum failure, and (c) secondary burns or deflagrations resulting from excess, unburned gases in the cabinet area. A variety of cases were considered that maximized the pressure produced in the V&P cabinet. Also, cases were analyzed that maximized the shock wave pressure in the cabinet from TRU drum failure. The calculations were performed for various initial drum pressures (e.g., 1.5 and 6 psig) for 55 gallon TRU drum. The calculated peak cabinet pressures ranged from 16 psig to 50 psig for various flammable gas compositions. The blast on top of cabinet and in outlet duct ranged from 50 psig to 63 psig and 12 psig to 16 psig, respectively, for various flammable gas compositions. The failure pressures of the cabinet and the ducts calculated by structural analysis were higher than the pressure calculated from potential flammable gas deflagrations, thus, assuring that V&P cabinet would not fail during this event. National Fire Protection Association (NFPA) 68 calculations showed that for a failure pressure of 20 psig, the available vent area in the V&P cabinet is 1.7 to 2.6 times the required vent area depending on whether hydrogen or VOCs burn in the V&P cabinet. This analysis methodology could be used to design the process equipment needed for venting TRU waste containers at other sites across the Department of Energy (DOE) Complex.

  3. ELECTROSTATIC (LANGMUIR) PROBE MEASUREMENTS IN RF DRIVEN He, N2, BCl3, AND BCl3/N2 PLASMAS

    E-Print Network [OSTI]

    Pathak, Bogdan Amaru

    2008-08-01

    of GaAs with nitrogen addition. The system was validated in both helium and nitrogen plasmas. Probe measurements showed that as the nitrogen concentration in BCl3/N2 plasmas increased, the average electron energy actually decreased (5.52 eV @ 0% N2, 4...

  4. On the Provenance of Pluto's Nitrogen (N2)

    E-Print Network [OSTI]

    Singer, Kelsi N

    2015-01-01

    N2 is abundant in Pluto's atmosphere and on its surface, but the supply is depleted by prodigious atmospheric escape. We demonstrate that cometary impacts could not have delivered enough N2 mass to resupply Pluto's atmospheric escape over time; thus Pluto's N2 is likely endogenous, and therefore was either acquired early in its history or created by chemistry inside/on Pluto. We find that cratering could excavate a considerable amount of N2 to resupply the atmosphere against escape if the near-surface N2 reservoir is deep. However, we find that this process likely falls short of that necessary to resupply the atmosphere against escape by at least an order of magnitude. We conclude that either the escape of N2 from Pluto's atmosphere was on average much lower than the predictions for the current epoch, or that internal activity could be necessary to bring N2 to the surface and resupply escape losses. Observations made by the New Horizons spacecraft in mid-2015 will yield further constraints on the provenance a...

  5. Scattering and Thermodynamics of Integrable N=2 Theories

    E-Print Network [OSTI]

    P. Fendley; K. Intriligator

    1992-02-04

    We study $N$=2 supersymmetric integrable theories with spontaneously-broken \\Zn\\ symmetry. They have exact soliton masses given by the affine $SU(n)$ Toda masses and fractional fermion numbers given by multiples of $1/n$. The basic such $N$=2 integrable theory is the $A_n$-type $N$=2 minimal model perturbed by the most relevant operator. The soliton content and exact S-matrices are obtained using the Landau-Ginzburg description. We study the thermodynamics of these theories and calculate the ground-state energies exactly, verifying that they have the correct conformal limits. We conjecture that the soliton content and S-matrices in other integrable \\Zn\\ $N$=2 theories are given by the tensor product of the above basic $N$=2 \\Zn\\ scattering theory with various $N$=0 theories. In particular, we consider integrable perturbations of $N$=2 Kazama-Suzuki models described by generalized Chebyshev potentials, $CP^{n-1}$ sigma models, and $N$=2 sine-Gordon and its affine Toda generalizations.

  6. Interaction of non-meat ingredients on sensory characteristics and chemical characteristics of pork loin chops during vacuum-packaged refrigerated storage

    E-Print Network [OSTI]

    Ford, Tara K.

    2005-11-01

    (0, 1, 2, 3 and 4%), potassium lactate (0, 1, 2, 3 and 4%) and sodium diacetate (0, .05, .10, .15 and .20%) on the color, sensory characteristics, package purge, water holding capacity, and pH of pork chops stored in vacuum-packaging for 0, 7, 14, 21...

  7. Stress-tensor OPE in N=2 Superconformal Theories

    E-Print Network [OSTI]

    Pedro Liendo; Israel Ramirez; Jihye Seo

    2015-08-31

    We carry out a detailed superspace analysis of the OPE of two N=2 stress-tensor multiplets. Knowledge of the multiplets appearing in the expansion, together with the two-dimensional chiral algebra description of N=2 SCFTs, imply an analytic bound on the central charge c. This bound is valid for any N=2 SCFT regardless of its matter content and flavor symmetries, and is saturated by the simplest Argyres-Douglas fixed point. We also present a partial conformal block analysis for the scalar superconformal primary of the multiplet.

  8. Chiral and real N=2 supersymmetric ?-conformal Galilei algebras

    SciTech Connect (OSTI)

    Aizawa, N. [Department of Mathematics and Information Sciences, Graduate School of Science, Osaka Prefecture University, Nakamozu Campus, Sakai, Osaka 599-8351 (Japan)] [Department of Mathematics and Information Sciences, Graduate School of Science, Osaka Prefecture University, Nakamozu Campus, Sakai, Osaka 599-8351 (Japan); Kuznetsova, Z. [UFABC, Rua Santa Adlia 166, Bangu, cep 09210-170, Santo Andr, SP (Brazil)] [UFABC, Rua Santa Adlia 166, Bangu, cep 09210-170, Santo Andr, SP (Brazil); Toppan, F. [CBPF, Rua Dr. Xavier Sigaud 150, Urca, cep 22290-180, Rio de Janeiro, RJ (Brazil)] [CBPF, Rua Dr. Xavier Sigaud 150, Urca, cep 22290-180, Rio de Janeiro, RJ (Brazil)

    2013-09-15

    Inequivalent N=2 supersymmetrizations of the ?-conformal Galilei algebra in d-spatial dimensions are constructed from the chiral (2, 2) and the real (1, 2, 1) basic supermultiplets of the N=2 supersymmetry. For non-negative integer and half-integer ?, both superalgebras admit a consistent truncation with a (different) finite number of generators. The real N=2 case coincides with the superalgebra introduced by Masterov, while the chiral N=2 case is a new superalgebra. We present D-module representations of both superalgebras. Then we investigate the new superalgebra derived from the chiral supermultiplet. It is shown that it admits two types of central extensions, one is found for any d and half-integer ?, and the other only for d= 2 and integer ?. For each central extension, the centrally extended ?-superconformal Galilei algebra is realized in terms of its super-Heisenberg subalgebra generators.

  9. An Efficient RNS to Binary Converter Using the Moduli Set {2n + 1, 2n, 2n -1}

    E-Print Network [OSTI]

    Cotofana, Sorin

    An Efficient RNS to Binary Converter Using the Moduli Set {2n + 1, 2n, 2n - 1} Kazeem Alagbe System (RNS) to decimal conversion which is an important issue concerning the utilization of RNS numbers System (RNS) is an unweighted number system with inherent parallel characteristics, which supports carry

  10. A Specific N = 2 Supersymmetric Quantum Mechanical Model: Supervariable Approach

    E-Print Network [OSTI]

    Shukla, Aradhya

    2015-01-01

    By exploiting the supersymmetric invariant restrictions on the chiral and anti-chiral supervariables, we derive the off-shell nilpotent symmetry transformations for a specific (0 + 1)-dimensional N = 2 supersymmetric quantum mechanical model which is considered on a (1, 2)-dimensional supermanifold (parametrized by a bosonic variable t and a pair of Grassmannian variables (\\theta, \\bar\\theta). We also provide the geometrical meaning to the symmetry transformations. Finally, we show that this specific N = 2 SUSY quantum mechanical model is a model for Hodge theory.

  11. N2O Emissions From 2010 SCR Systems | Department of Energy

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

    N2O Emissions From 2010 SCR Systems N2O Emissions From 2010 SCR Systems Reviews potential contribution to N2O formation of typical diesel exhaust aftertreatment system based on...

  12. K-311-1/K-310-3 Purge Cascade Process Description, Oak Ridge Environmental Management Accelerated Cleanup Project, Oak Ridge, Tennessee

    SciTech Connect (OSTI)

    Shoemaker J.E.

    2009-05-13

    K-311-1 was constructed along with the rest of the K-25 Building in the 1943-1945 timeframe. K-311-1 was equipped with Size 3 converters and Size 38 Allis Chalmers{trademark} single-stage centrifugal compressors driven by 3600 rpm electric motors, and the unit operated as the 'bottom' unit flow-wise in K-25. The depleted flow from the bottom stage in K-311-1 passed through booster compressors and flowed to the K-601 Building where the depleted or 'tails' material was removed. In 1948, after the K-27 Building was completed, the decision was made to operate K-27 and K-25 in series rather than operate the two buildings as separate entities. To facilitate this operation, concrete bases were poured and two sets of booster compressors were installed in the extreme West end of the K-311-1 cell floor. These compressors were enclosed in heated housings and consisted of Size 38 compressors. One pair was to boost the 'B' flow between K-25 and K-27, and one pair was to boost the 'A' flow between the buildings. Each station operated with one compressor on-stream and the other in standby. (Reference 9) Each station also was equipped with a Size 2 after-cooler located in the discharge stream downstream of the junction of the onstream and standby compressors. Additional gaseous diffusion capacity was added at Oak Ridge as K-29, K-31, and K-33 were constructed and placed in service in the early 1950s. As a result of the additional process equipment added by these buildings, in-leakage of light gases to the cascade including light gases introduced into the cascade as a result of purging operations threatened to exceed the capacity of the existing K-312 Purge Cascade facilities in the K-25 Building. As a result, in 1954 K-311-1 was converted to a side purge cascade to remove light gases from the process gas stream as the stream entered K-25 from K-27. Low molecular weight gas in-leakage in K-33, K-31, K-29, and K-27 was removed by the K-311-1 Side Purge Facility and a relatively pure stream of UF6 then passed from K-311-1 into the upstream cells in K-25. In-leakage of light gases in the K-25 Building continued to be removed by the K-312 Purge Facilities. K-311-1 operated as a Side Purge Cascade from 1954 until the K-25 Building was shut down in 1964; at that time K-311-1 became the Oak Ridge Gaseous Diffusion Plant (ORGDP) Top (and only) Purge Cascade. The adjacent K-310-3 Unit was operated along with K-311-1 as the top purge cascade and K-310-2 was also operated at times to supplement cells in the K311-1/K-310-3 Purge Cascade. K-311-1 was shut down on February 14, 1977, after the newer, larger capacity K-402-9 Purge Cascade was placed in operation. K-310-3 continued to operate until the K-402-8 Coolant Removal Unit was placed in service, and K-310-3 was shut down on March 14, 1978. Since the K-311-1 and K-310-3 units continued to operate after K-25 shutdown, removal of equipment such as valves and piping for other projects did not occur in this area. As a result, these two units have not been exposed to atmospheric wet air over the years as much of the remainder of K-25 has been exposed. Any deposits or residual gases contained in K-311-1 or K-310-3 are not likely to be fully hydrolyzed.

  13. Nonlocality from N>2 independent single-photon emitters

    SciTech Connect (OSTI)

    Thiel, C.; Wiegner, R.; Zanthier, J. von [Institut fuer Optik, Information und Photonik, Universitaet Erlangen-Nuernberg, D-91058 Erlangen (Germany); Agarwal, G. S. [Department of Physics, Oklahoma State University, Stillwater, Oklahoma 74078-3072 (United States)

    2010-09-15

    We demonstrate that intensity correlations of second order in the fluorescence light of N>2 single-photon emitters may violate locality while the visibility of the signal remains below 1/{radical}(2){approx_equal}71%. For this, we derive a homogeneous Bell-Wigner-type inequality, which can be applied to a broad class of experimental setups. We trace the violation of this inequality back to path entanglement created by the process of detection.

  14. Photodesorption of ices I: CO, N2 and CO2

    E-Print Network [OSTI]

    Karin I. Oberg; Ewine F. van Dishoeck; Harold Linnartz

    2009-01-23

    A longstanding problem in astrochemistry is how molecules can be maintained in the gas phase in dense inter- and circumstellar regions. Photodesorption is a non-thermal desorption mechanism, which may explain the small amounts of observed cold gas in cloud cores and disk mid-planes. This paper aims to determine the UV photodesorption yields and to constrain the photodesorption mechanisms of three astrochemically relevant ices: CO, N2 and CO2. In addition, the possibility of co-desorption in mixed and layered CO:N2 ices is explored. The ice photodesorption is studied experimentally under ultra high vacuum conditions and at 15-60 K using a hydrogen discharge lamp (7-10.5 eV). The ice desorption during irradiation is monitored by reflection absorption infrared spectroscopy of the ice and simultaneous mass spectrometry of the desorbed molecules. Both the UV photodesorption yields per incident photon and the photodesorption mechanisms are molecule specific. CO photodesorbs without dissociation from the surface layer of the ice. N2, which lacks an electronic transition in this wavelength range, has a photodesorption yield that is more than an order of magnitude lower. This yield increases significantly due to co-desorption when N2 is mixed in with or layered on top of CO ice. CO2 photodesorbs through dissociation and subsequent recombination from the top 10 layers of the ice. At low temperatures (15-18 K) the derived photodesorption yields are 2.7x10^-3 and CO2 photodesorption yield is 1.2x10^-3x(1-e^(-X/2.9)) + 1.1x10^-3x(1-e^(-X/4.6)) molecules photon-1, where X is the ice thickness in monolayers and the two parts of the expression represent a CO2 and CO photodesorption pathway.

  15. N=2 supersymmetric gauge theories and quantum integrable systems

    E-Print Network [OSTI]

    Yuan Luo; Meng-Chwan Tan; Junya Yagi

    2014-04-01

    We study N=2 supersymmetric gauge theories on the product of a two-sphere and a cylinder. We show that the low-energy dynamics of a BPS sector of such a theory is described by a quantum integrable system, with the Planck constant set by the inverse of the radius of the sphere. If the sphere is replaced with a hemisphere, then our system reduces to an integrable system of the type studied by Nekrasov and Shatashvili. In this case we establish a correspondence between the effective prepotential of the gauge theory and the Yang-Yang function of the integrable system.

  16. Exact results on N=2 supersymmetric gauge theories

    E-Print Network [OSTI]

    Jrg Teschner

    2015-03-10

    This is the introduction to the collection of review articles "Exact results on N=2 supersymmetric gauge theories". The first three sections are intended to give a general overview over the physical motivations behind this direction of research, and some of the developments that initiated this project. These sections are written for a broad audience of readers with interest in quantum field theory, assuming only very basic knowledge of supersymmetric gauge theories and string theory. This will be followed by a brief overview over the different chapters collected in this volume, while the last section indicates some related developments that we were unfortunately not able to cover.

  17. Can N 2 O stable isotopes and isotopomers be useful tools to characterize sources and microbial pathways of N 2 O production and consumption in tropical soils?

    E-Print Network [OSTI]

    2011-01-01

    in Microbial Production and Consumption of Green- housesoil denitrification: Production and consumption of nitrouspathways of N 2 O production and consumption in tropical

  18. Selective Catalytic Oxidation (SCO) of NH3 to N2 for Hot Exhaust...

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

    Oxidation (SCO) of NH3 to N2 for Hot Exhaust Treatment Selective Catalytic Oxidation (SCO) of NH3 to N2 for Hot Exhaust Treatment Investigation of a series of transition metal...

  19. Exact results for ${\\cal N}=2$ supersymmetric gauge theories on compact toric manifolds and equivariant Donaldson invariants

    E-Print Network [OSTI]

    Bershtein, Mikhail; Ronzani, Massimiliano; Tanzini, Alessandro

    2015-01-01

    We provide a contour integral formula for the exact partition function of ${\\cal N}=2$ super-symmetric $U(N)$ gauge theories on compact toric four-manifolds by means of supersymmetric localisation. We perform the explicit evaluation of the contour integral for $U(2)$ ${\\cal N}=2$ theory on $\\mathbb{P}^2$ for all instanton numbers. In the zero mass case, corresponding to the ${\\cal N}=4$ supersymmetric gauge theory, we obtain the generating function of the Euler characteristics of instanton moduli spaces in terms of quasi-modular forms. In the decoupling limit of infinite mass we find that the generating function of local and surface observables computes equivariant Donaldson invariants, thus proving in this case a long-standing conjecture by N. Nekrasov. In the case of vanishing first Chern class the resulting equivariant Donaldson polynomials are new.

  20. O_3-N_2O correlations from the Atmospheric Chemistry Experiment

    E-Print Network [OSTI]

    Wirosoetisno, Djoko

    O_3-N_2O correlations from the Atmospheric Chemistry Experiment: revisiting a diagnostic. (2007) O_3-N_2O correlations from the Atmospheric Chemistry Experiment: revisiting a diagnostic outputs online #12;O3-N2O correlations from the Atmospheric Chemistry Experiment: Revisiting a diagnostic

  1. Global distribution of N2O emissions from aquatic systems: natural emissions and anthropogenic eects

    E-Print Network [OSTI]

    Seitzinger, Sybil

    Global distribution of N2O emissions from aquatic systems: natural emissions and anthropogenic, are increasing due to human activities. Our analysis suggests that a third of global anthropogenic N2O emission the remainder. Over 80% of aquatic anthropogenic N2O emissions are from the Northern Hemisphere mid

  2. Structure and critical function of Fe and acid sites in Fe-ZSM-5 in propane oxidative dehydrogenation with N2O and N2O decomposition

    E-Print Network [OSTI]

    Sklenak, Stepan

    Structure and critical function of Fe and acid sites in Fe-ZSM-5 in propane oxidative species Steamed Fe-zeolites Mssbauer spectroscopy UVVis FTIR H2-TPR N2O decomposition Propane oxidative of propane to propene with N2O. The evacuated non-steamed FeH-ZSM-5 contained high concentration of Brnsted

  3. Transpiration purged optical probe

    DOE Patents [OSTI]

    2004-01-06

    An optical apparatus for clearly viewing the interior of a containment vessel by applying a transpiration fluid to a volume directly in front of the external surface of the optical element of the optical apparatus. The fluid is provided by an external source and transported by means of an annular tube to a capped end region where the inner tube is perforated. The perforation allows the fluid to stream axially towards the center of the inner tube and then axially away from an optical element which is positioned in the inner tube just prior to the porous sleeve. This arrangement draws any contaminants away from the optical element keeping it free of contaminants. In one of several embodiments, the optical element can be a lens, a viewing port or a laser, and the external source can provide a transpiration fluid having either steady properties or time varying properties.

  4. The development of N2S2 metal complexes as bidentate ligands for organometallic chemistry

    E-Print Network [OSTI]

    Rampersad, Marilyn Vena

    2007-04-25

    from CO addition to (NiN2S2)W(CO)4, which is in equilibrium with the resulting (NiN2S2)W(CO)5 species (Keq = 2.8 M-1, G = -1.4 kJ/mole at 50C). Complete NiN2S2 ligand displacement by CO-cleavage of the remaining W-S bond to form W(CO)6 was not observed...

  5. The Inner Solar System Characteristics of Earth

    E-Print Network [OSTI]

    Walter, Frederick M.

    The Inner Solar System #12;The Earth #12;Characteristics of Earth A terrestrial, rocky planet floats on mantle Crust is created and destroyed #12;Characteristics of Earth Today Surface: 70% water 30% land Atmosphere: 77% N2 21% O2 0.1% H2O +Ar, CO2, Ne #12;The Dynamic Earth Molten Core

  6. Chemical evolution of the HC3N and N2H+ molecules in dense cores of the Vela C giant molecular cloud complex

    E-Print Network [OSTI]

    Ohashi, Satoshi; Fujii, Kosuke; Sanhueza, Patricio; Luong, Quang Nguyen; Choi, Minho; Hirota, Tomoya; Mizuno, Norikazu

    2015-01-01

    We have observed the HC3N (J=10-9) and N2H+ (J=1-0) lines toward the Vela C molecular clouds with the Mopra 22 m telescope to study chemical characteristics of dense cores. The intensity distributions of these molecules are similar to each other at an angular resolution of 53", corresponding to 0.19 pc suggesting that these molecules trace the same dense cores. We identified 25 local peaks in the velocity-integrated intensity maps of the HC3N and/or N2H+ emission. Assuming LTE conditions, we calculated the column densities of these molecules and found a tendency that N2H+/HC3N abundance ratio seems to be low in starless regions while it seems to be high in star-forming regions, similar to the tendencies in the NH3/CCS, NH3/HC3N, and N2H+/CCS abundance ratios found in previous studies of dark clouds and the Orion A GMC. We suggest that carbon chain molecules, including HC3N, may trace chemically young molecular gas and N-bearing molecules, such as N2H+, may trace later stages of chemical evolution in the Vela ...

  7. N2 DISSOCIATION IN THE MESOSPHERE DUE TO SECONDARY ELECTRONS DURING A SOLAR

    E-Print Network [OSTI]

    Ulich, Thomas

    N2 DISSOCIATION IN THE MESOSPHERE DUE TO SECONDARY ELECTRONS DURING A SOLAR PROTON EVENT, ionization processes produce secondary electrons that, if possessing 9.76 eV or more energy, dissociate N2 to secondary electrons dur- ing a solar proton event. Further, we have studied the effect on atomic nitrogen

  8. Extended BRS and anti-BRS symmetries in N=2 harmonic superspace

    SciTech Connect (OSTI)

    Lhallabi, T.; Saidi, E.H. (L.P.T., av. Ibn Battouta, Rabat (MA))

    1988-01-01

    The full set of extended BRS and anti-BRS symmetries are derived for components of superconnection and gauge superfield using the N = 2 harmonic superspace. The quantization of N = 2 supersymmetric theory is developed and the proof of its gauge invariance is presented.

  9. Multiparameter statistical models from $N^2\\times N^2$ braid matrices: Explicit eigenvalues of transfer matrices ${\\bf T}^{(r)}$, spin chains, factorizable scatterings for all $N$

    E-Print Network [OSTI]

    B. Abdesselam; A. Chakrabarti

    2008-07-02

    For a class of multiparameter statistical models based on $N^2\\times N^2$ braid matrices the eigenvalues of the transfer matrix ${\\bf T}^{(r)}$ are obtained explicitly for all $(r,N)$. Our formalism yields them as solutions of sets of linear equations with simple constant coefficients. The role of zero-sum multiplets constituted in terms of roots of unity is pointed out and their origin is traced to circular permutations of the indices in the tensor products of basis states induced by our class of ${\\bf T}^{(r)}$ matrices. The role of free parameters, increasing as $N^2$ with $N$, is emphasized throughout. Spin chain Hamiltonians are constructed and studied for all $N$. Inverse Cayley transforms of Yang-Baxter matrices corresponding to our braid matrices are obtained for all $N$. They provide potentials for factorizable $S$-matrices. Main results are summarized and perspectives are indicated in the concluding remarks.

  10. Determination of parts-per-billion concentrations of dioxane in water and soil by purge and trap gas chromatography/mass spectrometry or charcoal tube enrichment gas chromatography

    SciTech Connect (OSTI)

    Epstein, P.S.; Mauer, T.; Wagner, M.; Chase, S.; Giles, B.

    1987-08-01

    Two methods for the determination of 1,4-dioxane in water have been studied. The first method is a heated purge and trap gas chromatography/mass spectrometry system following salting out with sodium sulfate. The second method is an adsorption on coconut-shell charcoal and solvent desorption with carbon disulfide/methanol followed by analysis of the desorbate by gas chromatography with flame ionization detection. The first method is also successful for the determination of 1,4-dioxane in solids and sediments. The second method is shown to be successful for 2-butanone, 4-methyl-2-pentanone, and butoxyethanol in water. The two methods are compared by analyzing 15 samples by both methods and achieving similar results.

  11. Analytical Formulas of Molecular Ion Abundances and N2H+ Ring in Protoplanetary Disks

    E-Print Network [OSTI]

    Aikawa, Yuri; Nomura, Hideko; Qi, Chunhua

    2015-01-01

    We investigate the chemistry of ion molecules in protoplanetary disks, motivated by the detection of N$_2$H$^+$ ring around TW Hya. While the ring inner radius coincides with the CO snow line, it is not apparent why N$_2$H$^+$ is abundant outside the CO snow line in spite of the similar sublimation temperatures of CO and N$_2$. Using the full gas-grain network model, we reproduced the N$_2$H$^+$ ring in a disk model with millimeter grains. The chemical conversion of CO and N$_2$ to less volatile species (sink effect hereinafter) is found to affect the N$_2$H$^+$ distribution. Since the efficiency of the sink depends on various parameters such as activation barriers of grain surface reactions, which are not well constrained, we also constructed the no-sink model; the total (gas and ice) CO and N$_2$ abundances are set constant, and their gaseous abundances are given by the balance between adsorption and desorption. Abundances of molecular ions in the no-sink model are calculated by analytical formulas, which a...

  12. The inverse conductivity problem with power densities in dimension n2

    E-Print Network [OSTI]

    Franois Monard, Guillaume Bal

    2012-06-19

    Jun 19, 2012 ... The model: X ? Rn bounded domain, n ? 2. ? (??u) ? ? .... A first-order quasi-linear system is then derived for the frame S. ?Si = HkqHjp(...

  13. Topics in 3D N=2 AdS supergravity in superspace

    E-Print Network [OSTI]

    Gabriele Tartaglino-Mazzucchelli

    2012-02-01

    We review some recent results on the construction in superspace of 3D N=2 AdS supergravities and on the formulation of rigid supersymmetric theories in (1,1) and (2,0) AdS superspaces.

  14. Elastic stability and electronic structure of pyrite type PtN2: Ahard semiconductor

    SciTech Connect (OSTI)

    Yu, Rong; Zhan, Qian; Zhang, Xiao-Feng

    2006-08-29

    The elastic properties and electronic structure of PtN2 withthe pyrite structure (PtN2(C2)) were studied with first-principlescalculations. The crystal structure is demonstrated to be elasticallystable with a lower energy than the metastable fluorite structureproposed before. The calculated shear modulus of 214 GPa suggests thatPtN2(C2) is harder than some well known hard materials such as TiN andSiC. The high elastic moduli are attributed to a stacking ofcorner-shared PtN6 octahedra bonded by strong N-N covalent bonding. Incontrast to the metallic fluorite-type phase, PtN2(C2) is semiconductingwith an indirect band gap.

  15. Classical M-Fivebrane Dynamics and Quantum N=2 Yang-Mills

    E-Print Network [OSTI]

    P. S. Howe; N. D. Lambert; P. C. West

    1997-11-05

    We obtain the complete quantum Seiberg-Witten effective action for N=2 supersymmetric SU(N) Yang-Mills theory from the classical M-fivebrane equations of motion with N threebranes moving in its worldvolume.

  16. D-module Representations of N=2,4,8 Superconformal Algebras and Their Superconformal Mechanics

    E-Print Network [OSTI]

    Zhanna Kuznetsova; Francesco Toppan

    2011-12-05

    The linear (homogeneous and inhomogeneous) (k, N, N-k) supermultiplets of the N-extended one-dimensional Supersymmetry Algebra induce D-module representations for the N=2,4,8 superconformal algebras. For N=2, the D-module representations of the A(1,0) superalgebra are obtained. For N=4 and scaling dimension \\lambda=0, the D-module representations of the A(1,1) superalgebra are obtained. For $\\lambda\

  17. D-module Representations of N=2,4,8 Superconformal Algebras and Their Superconformal Mechanics

    E-Print Network [OSTI]

    Kuznetsova, Zhanna

    2011-01-01

    The linear (homogeneous and inhomogeneous) (k, N, N-k) supermultiplets of the N-extended one-dimensional Supersymmetry Algebra induce D-module representations for the N=2,4,8 superconformal algebras. For N=2, the D-module representations of the A(1,0) superalgebra are obtained. For N=4 and scaling dimension \\lambda=0, the D-module representations of the A(1,1) superalgebra are obtained. For $\\lambda\

  18. Hybrid r-Vacua in N=2 Supersymmetric QCD: Universal Condensate Formula

    E-Print Network [OSTI]

    M. Shifman; A. Yung

    2013-03-06

    We derive an exact unified formula for all condensates (quark and monopole) in the hybrid r vacua in N=2 supersymmetric QCD slightly deformed by a \\mu A^2 term. The gauge group is assumed to be U(N) and the number of the quark flavors N_f subject to the condition Nhybrid r vacua in \\mu-deformed N=2 SQCD (the small-\\mu limit).

  19. N2 and CO2 vibrational modes in solid nitrogen under pressure M. D. McCluskeya)

    E-Print Network [OSTI]

    McCluskey, Matthew

    . For CO2 concentrations of 0.1%, phase separation is present at low pressures, but is suppressed for pressures greater than 1 GPa. In summary, these studies have contributed to the knowledge of the N2 phase on N2 under hydrostatic pressure. These studies contribute to the knowledge of the N2 phase diagram

  20. SUBMERGED GRAVEL SCRUBBER DEMONSTRATION AS A PASSIVE AIR CLEANER FOR CONTAINMENT VENTING AND PURGING WITH SODIUM AEROSOLS -- CSTF TESTS AC7 - AC10

    SciTech Connect (OSTI)

    HILLIARD, R K.; MCCORMACK, J D.; POSTMA, A K.

    1981-11-01

    Four large-scale air cleaning tests (AC7 - AC10) were performed in the Containment Systems Test Facility (CS'lF) to demonstrate the performance of a Submerged Gravel Scrubber for cleaning the effluent gas from a vented and purged breeder reactor containment vessel. The test article, comprised of a Submerged Gravel Scrubber (SGS) followed by a high efficiency fiber demister, had a design gas flow rate of 0.47 m{sup 3}/s (1000 ft{sup 3}/min) at a pressure drop of 9.0 kPa (36 in. H{sub 2}O). The test aerosol was sodium oxide, sodium hydroxide, or sodium carbonate generated in the 850-m{sup 3} CSTF vessel by continuously spraying sodium into the air-filled vessel while adding steam or carbon dioxide. Approximately 4500 kg (10,000 lb) of sodium was sprayed over a total period of 100 h during the tests. The SGS/Demister system was shown to be highly efficient (removing ~99.98% of the entering sodium aerosol mass), had a high mass loading capacity, and operated in a passive manner, with no electrical requirement. Models for predicting aerosol capture, gas cooling, and pressure drop are developed and compared with experimental results.

  1. Gauge/Gravity Duality, Green Functions of N=2 SYM and Radial/Energy-Scale Relation

    E-Print Network [OSTI]

    Xiao-Jun Wang; Seng Hu

    2002-07-19

    We consider supergravity configuration of D5 branes wrapped on supersymmetric 2-cycles and use it to calculate one-point and two-point Green functions of some special operators in N=2 super Yang-Mills theory. We show that Green functions obtained from supergravity include two very different parts. One of them corresponds to perturbative results of quantum field theory, and another is a non-perturbative effect which corresponds to contribution from instantons with fractional charge. Comparing Green functions obtained from supergravity and gauge theory, we obtain radial/energy-scale relation for this gauge/gravity correspondence with N=2 supersymmetry. This relation leads right beta-function of N=2 SYM from supergravity configuration.

  2. Supersymmetric extension of the nine-dimensional continuation of the Euler density with N=2

    E-Print Network [OSTI]

    Mokhtar Hassaine; Rodrigo Olea; Ricardo Troncoso

    2004-08-26

    A local supersymmetric extension with N=2 of the dimensional continuation of the Euler-Gauss-Bonnet density from eight to nine dimensions is constructed. The gravitational sector is invariant under local Poincare translations, and the full field content is given by the vielbein, the spin connection, a complex gravitino, and an Abelian one-form. The local symmetry group is shown to be super Poincare with N=2 and a U(1) central extension, and the full supersymmetric Lagrangian can be written as a Chern-Simons form.

  3. H-2(p,n)2p Spin Transfer from 305 to 788 Mev

    E-Print Network [OSTI]

    McNaughton, M. W.; Koch, K.; Supek, I.; Tanaka, N.; Ambrose, DA; Coffey, P.; Johnston, K.; McNaughton, K. H.; Riley, P. J.; Glass, G.; Hiebert, John C.; Northcliffe, L. C.; Simon, A. J.; Mercer, D. J.; Adams, D. L.; Spinka, H.; Jeppersen, R. H.; Tripard, G. E.; Woolverton, H.

    1992-01-01

    Measurements of the spin-transfer parameter K(LL) for H-2(p, n)2p at 0-degrees to calibrate the neutron-beam polarization clarify a normalization discrepancy affecting np data at LAMPF. The new data are in good agreement with theoretical predictions....

  4. Enhancement of CO2/N2 selectivity in a metal-organic framework by cavity modification

    E-Print Network [OSTI]

    are a strong motivation to reduce CO2 emissions from industrial processes. Burning of fossil fuel to generate electricity is a major source of CO2 in the atmosphere, but the capture and sequestration of CO2 from flue gasEnhancement of CO2/N2 selectivity in a metal-organic framework by cavity modification Youn-Sang Bae

  5. THE RADIO NUMBERS OF ALL GRAPHS OF ORDER n AND DIAMETER n -2

    E-Print Network [OSTI]

    Tomova, Maggy

    THE RADIO NUMBERS OF ALL GRAPHS OF ORDER n AND DIAMETER n - 2 KATHERINE BENSON, MATTHEW PORTER, AND MAGGY TOMOVA Abstract. A radio labeling of a connected graph G is a function c : V (G) Z+ such that for every two distinct vertices u and v of G distance(u, v) + |c(u) - c(v)| 1 + diameter(G). The radio

  6. Shock-Tube Study of Methane Ignition with NO2 and N2O

    E-Print Network [OSTI]

    Pemelton, John

    2012-10-19

    . The experimental pressure range was 1 - 44 atm and the temperature range tested was 1177 2095 K. The additives NO2 and N2O were added in concentrations from 831 ppm to 3539 ppm. The results of the mixtures with NO2 have a reduction in ignition delay time across...

  7. Sminaire du Groupe N2IS Manipulation of chemicals in droplet-based microfluidics

    E-Print Network [OSTI]

    Ingrand, Franois

    Sminaire du Groupe N2IS Manipulation of chemicals in droplet-based microfluidics Le 06 Septembre TOULOUSE Cedex 4 Rsum Droplet-based microfluidics has a tremendous potential for the miniaturization of chemicals in microfluidic systems is therefore a key to reliably downscale the assays from microtiter plates

  8. 2.2.29. Demostrar que nx((n) -(n))2 Solucion: Para el resto de la prueba, p y q representan siempre un

    E-Print Network [OSTI]

    Cilleruelo, Javier

    2.2.29. Demostrar que nx((n) - (n))2 = O(x). Soluci´on: Para el resto de la prueba, p y q (n) = p|n 1, por tanto lo que queremos estimar es: nx ((n) - (n))2 = nx ( p|n 2 1)2 . Donde es un cantidad elevada al cuadrado, podemos poner eso como nx ((n) - (n))2 = nx ( p|n 2 1)( q|n 2 1). Reordenando

  9. Dielectric response of N2-Ar solid solutions in the audio frequency range S. Pilla,* J. A. Hamida, K. A. Muttalib, and N. S. Sullivan

    E-Print Network [OSTI]

    Muttalib, Khandker

    -long-range quadrupolar ordered phase phase IB .5,6 At intermediate N2 concentrations, 57 x(N2) 78 mol%, the lattice

  10. New classes of D = 4, N = 2 supersymmetric nonlinear /sigma/ models

    SciTech Connect (OSTI)

    Saidi, E.H.

    1989-01-01

    The authors show that there exists three independent N = 2, harmonic superspaces denoted as (2,2-bar)/sub +-/; (2,2-bar)/sub ++/ and (2,2)/sub +-/. These superspaces are in one-to-one correspondence with the three complex structures of the quaternionic body. The underlying supersymmetric nonlinear /sigma/ models preserving the SU(2) symmetry are developed. Two of them are described by a neutral hyperkahler potential. New results are obtained.

  11. AN IMPROVED BOUND FOR THE HAUSDORFF DIMENSION OF (n, 2)-SETS

    E-Print Network [OSTI]

    Jyväskylä, University of

    )-sets. In higher dimensions it is an open question whether an (n, 2)-set must have positive measure. We = {x Rn : dist(x, Le(a)) } is the infinite tube with axis Le(a) and cross-section radius . 2000, 1 Pl, 2 T e (a), where = C/d(P1, P2). Therefore |Pl, 1 Pl, 2 | |Pl, 1 T e (a)| n-1 d(P1, P2

  12. Vafa-Witten Theory on N=2 and N=4 Twisted Superspace in Four Dimensions

    E-Print Network [OSTI]

    Kato, Junji

    2009-01-01

    We construct a new off-shell twisted hypermultiplet with a scalar and an anti-self-dual tensor superfields. Using the N=2 twisted superspace formalism, we construct a Donaldson-Witten theory coupled to the hypermultiplet. We show that this action possesses the Vafa-Witten type N=4 twisted supersymmetry at the on-shell level. We also reconstruct the action using a N=4 twisted superconnection formalism.

  13. Vafa-Witten Theory on N=2 and N=4 Twisted Superspace in Four Dimensions

    E-Print Network [OSTI]

    Junji Kato; Akiko Miyake

    2008-08-25

    We construct a new off-shell twisted hypermultiplet with a scalar and an anti-self-dual tensor superfields. Using the N=2 twisted superspace formalism, we construct a Donaldson-Witten theory coupled to the hypermultiplet. We show that this action possesses the Vafa-Witten type N=4 twisted supersymmetry at the on-shell level. We also reconstruct the action using a N=4 twisted superconnection formalism.

  14. Steric, Quantum, and Electrostatic Effects on S{sub N}2 Reaction Barriers in Gas Phase

    SciTech Connect (OSTI)

    Liu, Shubin; Hu, Hao; Pedersen, Lee G.

    2010-05-13

    Biomolecular nucleophilic substitution reactions, S{sub N}2, are fundamental and commonplace in chemistry. It is the well-documented experimental finding in the literature that vicinal substitution with bulkier groups near the reaction center significantly slows the reaction due to steric hindrance, but theoretical understanding in the quantitative manner about factors dictating the S{sub N}2 reaction barrier height is still controversial. In this work, employing the new quantification approach that we recently proposed for the steric effect from the density functional theory framework, we investigate the relative contribution of three independent effectssteric, electrostatic, and quantumto the S{sub N}2 barrier heights in gas phase for substituted methyl halide systems, R{sub 1}R{sub 2}R{sub 3}CX, reacting with the fluorine anion, where R{sub 1}, R{sub 2}, and R{sub 3} denote substituting groups and X = F or Cl. We found that in accordance with the experimental finding, for these systems, the steric effect dominates the transition state barrier, contributing positively to barrier heights, but this contribution is largely compensated by the negative, stabilizing contribution from the quantum effect due to the exchange-correlation interactions. Moreover, we find that it is the component from the electrostatic effect that is linearly correlated with the S{sub N}2 barrier height for the systems investigated in the present study. In addition, we compared our approach with the conventional method of energy decomposition in density functional theory as well as examined the steric effect from the wave function theory for these systems via natural bond orbital analysis.

  15. Non Abelian Sugawara Construction and the q-deformed N=2 Superconformal Algebra

    E-Print Network [OSTI]

    E. Batista; J. F. Gomes; I. J. Lautenschleguer

    1996-03-06

    The construction of a q-deformed N=2 superconformal algebra is proposed in terms of level 1 currents of ${\\cal{U}}_{q} ({\\widehat{su}}(2))$ quantum affine Lie algebra and a single real Fermi field. In particular, it suggests the expression for the q-deformed Energy-Momentum tensor in the Sugawara form. Its constituents generate two isomorphic quadratic algebraic structures. The generalization to ${\\cal{U}}_{q} ({\\widehat{su}}(N+1))$ is also proposed.

  16. Observations on BI from $\\mathcal{N}=2$ Supergravity and the General Ward Identity

    E-Print Network [OSTI]

    Andrianopoli, Laura; D'Auria, Riccardo; Rodriguez, Evelyn; Trigiante, Mario

    2015-01-01

    The multi-vector generalization of a rigid, partially-broken $\\mathcal{N}=2$ supersymmetric theory is presented as a rigid limit of a suitable gauged $\\mathcal{N}=2$ supergravity with electric, magnetic charges and antisymmetric tensor fields. This on the one hand generalizes a known result by Ferrara, Girardello and Porrati while on the other hand allows to recover the multi-vector BI models from $\\mathcal{N}=2$ supergravity as the end-point of a hierarchical limit in which the Planck mass first and then the supersymmetry breaking scale are sent to infinity. We define, in the parent supergravity model, a new symplectic frame in which, in the rigid limit, manifest symplectic invariance is preserved and the electric and magnetic Fayet-Iliopoulos terms are fully originated from the dyonic components of the embedding tensor. The supergravity origin of several features of the resulting rigid supersymmetric theory will be elucidated, such as the presence of a traceless ${\\rm SU}(2)$- Lie algebra term in the Ward i...

  17. Geometric Engineering, Mirror Symmetry and 6d (1,0) -> 4d, N=2

    E-Print Network [OSTI]

    Michele Del Zotto; Cumrun Vafa; Dan Xie

    2015-05-31

    We study compactification of 6 dimensional (1,0) theories on T^2. We use geometric engineering of these theories via F-theory and employ mirror symmetry technology to solve for the effective 4d N=2 geometry for a large number of the (1,0) theories including those associated with conformal matter. Using this we show that for a given 6d theory we can obtain many inequivalent 4d N=2 SCFTs. Some of these respect the global symmetries of the 6d theory while others exhibit SL(2,Z) duality symmetry inherited from global diffeomorphisms of the T^2. This construction also explains the 6d origin of moduli space of 4d affine ADE quiver theories as flat ADE connections on T^2. Among the resulting 4d N=2 CFTs we find theories whose vacuum geometry is captured by an LG theory (as opposed to a curve or a local CY geometry). We obtain arbitrary genus curves of class S with punctures from toroidal compactification of (1,0) SCFTs where the curve of the class S theory emerges through mirror symmetry. We also show that toroidal compactification of the little string version of these theories can lead to class S theories with no punctures on arbitrary genus Riemann surface.

  18. Angular Momentum of the N2H+ Cores in the Orion A Cloud

    E-Print Network [OSTI]

    Tatematsu, Ken'ichi; Sanhueza, Patricio; Luong, Quang Nguyen; Umemoto, Tomofumi; Mizuno, Norikazu

    2016-01-01

    We have analyzed the angular momentum of the molecular cloud cores in the Orion A giant molecular cloud observed in the N2H+ J = 1-0 line with the Nobeyama 45 m radio telescope. We have measured the velocity gradient using position velocity diagrams passing through core centers, and made sinusoidal fitting against the position angle. 27 out of 34 N2H+ cores allowed us to measure the velocity gradient without serious confusion. The derived velocity gradient ranges from 0.5 to 7.8 km/s/pc. We marginally found that the specific angular momentum J/M (against the core radius R) of the Orion N2H+ cores tends to be systematically larger than that of molecular cloud cores in cold dark clouds obtained by Goodman et al., in the J/M-R relation. The ratio beta of rotational to gravitational energy is derived to be beta = 10^{-2.3+/-0.7}, and is similar to that obtained for cold dark cloud cores in a consistent definition. The large-scale rotation of the integral-shaped filament of the Orion A giant molecular cloud does n...

  19. O2Purge.key

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration wouldMass map shinesSolarNewsusceptometer under pressureNavyNumericalO K H A V E N L E C T U

  20. PHYSIOLOGICAL ECOLOGY -ORIGINAL PAPER N2 fixation estimates in real-time by cavity ring-down laser

    E-Print Network [OSTI]

    Jackson, Robert B.

    by flame ionization detector gas chromatography. First, the detection of acetylene reduction to ethylene on a modestly priced, commercially available instrument. We illustrate its use for measuring N2 fixation using of atmospheric N2 to ammonium, is the dominant natural pathway for new nitrogen that enters most ecosystems

  1. Dynamics of NO reduction by H2 on Rh(111): Velocity and angular distributions of the N2 product

    E-Print Network [OSTI]

    Sibener, Steven

    Dynamics of NO reduction by H2 on Rh(111): Velocity and angular distributions of the N2 product J; accepted 17 January 1996 The velocity and angular distributions of N2 produced from the reduction temperature. Both the angular and velocity distributions are well fit by bimodal forms. The high energy

  2. Unified Approach to Pore Size Characterization of Microporous Carbonaceous Materials from N2, Ar, and CO2

    E-Print Network [OSTI]

    Muzzio, Fernando J.

    , and CO2 Adsorption Isotherms Peter I. Ravikovitch, Aleksey Vishnyakov, Ron Russo, and Alexander V adsorption at standard temperatures, 77 K for N2 and Ar and 273 K for CO2. Reference isotherms of N2, Ar, and CO2 in a series of model slit-shaped carbon pores in the range from 0.3 to 36 nm have been calculated

  3. Angular Momentum and Gravimagnetization of the ${\\cal N}=2$ SYM vacuum

    E-Print Network [OSTI]

    A. Gorsky

    2011-02-09

    In this note we discuss the gravimagnetization of the ${\\cal N}=2$ SYM vacuum in the $\\Omega$-background. It is argued that the Seiberg-Witten prepotential is related to the vacuum density of the angular momentum in the Euclidean $R^4$ space. The possible role of the dyonic instantons as the microscopic angular momentum carriers which could yield the spontaneous vacuum gravimagnetization is conjectured. We interpret the dyonic instanton as a kind of the Euclidean bounce in $R^4$ similar to one responsible for the Schwinger pair creation. The induced angular momentum in $R^4$ is also briefly considered in the dual Liouville formulation of $SU(2)$ theory via AGT relation.

  4. A $\\mathcal{N}=2$ Supersymmetric $AdS_4$ Solution in M-theory

    E-Print Network [OSTI]

    Lozano, Yolanda; Montero, Jess

    2015-01-01

    We find a new $\\mathcal{N}=2$ $AdS_4$ solution in M-theory supported by purely magnetic flux via a sequence of abelian and non-abelian T-dualities. This provides the second known example in this class besides the uplift of the Pernici and Sezgin solution to 7d gauged supergravity constructed in the eighties. We compute the free energy of the solution, and show that it scales as $N^{3/2}$. It is intriguing that even though the natural holographic interpretation is in terms of M5-branes wrapped on a special Lagrangian 3-cycle, this solution does not exhibit the expected $N^3$ behavior.

  5. Lagrangians with electric and magnetic charges of N=2 supersymmetric gauge theories

    E-Print Network [OSTI]

    Mathijs de Vroome; Bernard de Wit

    2007-07-18

    General Lagrangians are constructed for N=2 supersymmetric gauge theories in four space-time dimensions involving gauge groups with (non-abelian) electric and magnetic charges. The charges induce a scalar potential, which, when the charges are regarded as spurionic quantities, is invariant under electric/magnetic duality. The resulting theories are especially relevant for supergravity, but details of the extension to local supersymmetry will be discussed elsewhere. The results include the coupling to hypermultiplets. Without the latter, it is demonstrated how an off-shell representation can be constructed based on vector and tensor supermultiplets.

  6. The free energy of N=2 supersymmetric AdS_4 solutions of M-theory

    E-Print Network [OSTI]

    Maxime Gabella; Dario Martelli; Achilleas Passias; James Sparks

    2011-07-29

    We show that general N=2 supersymmetric AdS_4 solutions of M-theory with non-zero M2-brane charge admit a canonical contact structure. The free energy of the dual superconformal field theory on S^3 and the scaling dimensions of operators dual to supersymmetric wrapped M5-branes are expressed via AdS/CFT in terms of contact volumes. In particular, this leads to topological and localization formulae for the coefficient of N^{3/2} in the free energy of such solutions.

  7. Higher Rank Wilson Loops in N = 2* Super-Yang-Mills Theory

    E-Print Network [OSTI]

    Xinyi Chen-Lin; Konstantin Zarembo

    2015-02-13

    The N=2* Super-Yang-Mills theory (SYM*) undergoes an infinite sequence of large-N quantum phase transitions. We compute expectation values of Wilson loops in k-symmetric and antisymmetric representations of the SU(N) gauge group in this theory and show that the same phenomenon that causes the phase transitions at finite coupling leads to a non-analytic dependence of Wilson loops on k/N when the coupling is strictly infinite, thus making the higher-representation Wilson loops ideal holographic probes of the non-trivial phase structure of SYM*.

  8. N = 2 Supersymmetric Harmonic Oscillator: Basic Brackets Without Canonical Conjugate Momenta

    E-Print Network [OSTI]

    N. Srinivas; A. Shukla; R. P. Malik

    2015-08-16

    We exploit the ideas of spin-statistics theorem, normal-ordering and the key concepts behind the symmetry principles to derive the canonical (anti)commutators for the case of a one (0 + 1)-dimensional (1D) N = 2 supersymmetric (SUSY) harmonic oscillator (HO) without taking the help of the mathematical definition of canonical conjugate momenta with respect to the bosonic and fermionic variables of this toy model for the Hodge theory (where the continuous and discrete symmetries of the theory provide the physical realizations of the de Rham cohomological operators of differential geometry). In our present endeavor, it is the full set of continuous symmetries and their corresponding generators that lead to the derivation of basic (anti)commutators amongst the creation and annihilation operators that appear in the normal mode expansions of the dynamical fermionic and bosonic variables of our present N = 2 SUSY theory of a HO. These basic brackets are in complete agreement with such kind of brackets that are derived from the standard canonical method of quantization scheme.

  9. Two-dimensional N=(2,2) super Yang-Mills theory on computer

    E-Print Network [OSTI]

    Hiroshi Suzuki

    2007-09-05

    We carry out preliminary numerical study of Sugino's lattice formulation \\cite{Sugino:2004qd,Sugino:2004qdf} of the two-dimensional $\\mathcal{N}=(2,2)$ super Yang-Mills theory (2d $\\mathcal{N}=(2,2)$ SYM) with the gauge group $\\SU(2)$. The effect of dynamical fermions is included by re-weighting a quenched ensemble by the pfaffian factor. It appears that the complex phase of the pfaffian due to lattice artifacts and flat directions of the classical potential are not problematic in Monte Carlo simulation. Various one-point supersymmetric Ward-Takahashi (WT) identities are examined for lattice spacings up to $a=0.5/g$ with the fixed physical lattice size $L=4.0/g$, where $g$ denotes the gauge coupling constant in two dimensions. WT identities implied by an exact fermionic symmetry of the formulation are confirmed in fair accuracy and, for most of these identities, the quantum effect of dynamical fermions is clearly observed. For WT identities expected only in the continuum limit, the results seem to be consistent with the behavior expected from supersymmetry, although we do not see clear distintion from the quenched simulation. We measure also the expectation values of renormalized gauge-invariant bi-linear operators of scalar fields.

  10. PET exam A 424304 20-032013 Short answers 111. Ex = Ex (O2) + Ex(N2) + Ex (unmix)

    E-Print Network [OSTI]

    Zevenhoven, Ron

    (303/293)+8,314*293*ln(5) = 2288,6 W Similar Ex (N2) = 3709,8 W, and Ex (unmix) = 3478,1 W Total = 9475PET exam A 424304 20-032013 Short answers 111. Ex = Ex (O2) + Ex(N2) + Ex (unmix) Ex (O2) = (O2 --- Similar for N2. Ex (unmix) = -RT(0.21ln0.21 + 079ln0.79) Ex (O2) = (2100/3600)*(29,4*10-293*29,4*ln

  11. ATOC 3500/CHEM 3151 Spring 201, Problem 14 Evaluating the importance of Heterogeneous Chemistry of N2O5

    E-Print Network [OSTI]

    Toohey, Darin W.

    for NOx, because when sunlight returns it will photolyzes to reform NOx (NO + NO2). However, N2O5 can also been destroyed by catalytic reactions with the original NOx. The reactions described above are written

  12. Spectral Sequences and Vacua in N = 2 Gauged Linear Quantum Mechanics with Potentials

    E-Print Network [OSTI]

    Kenny Wong

    2015-11-24

    We study the behaviour of supersymmetric ground states in a class of one-dimensional N = 2 abelian gauged linear sigma models, including theories for which the target space is a complete intersection in projective space, and more generally, models with an interaction term introduced by Herbst, Hori and Page in which the vacua correspond to elements of hypercohomology groups of complexes of sheaves. Combining physical insights from recent work by Hori, Kim and Yi with the use of spectral sequences, we propose a way to reconcile the non-linear sigma model description, valid deep within a geometric phase, with the effective Coulomb branch description, valid near a phase boundary. This leads to a physical interpretation of the hypercohomology groups from the perspective of the Coulomb branch, as well as an interpretation for the spectral sequences used to compute them.

  13. Strong-field control of the dissociative ionization of N2O with near-single-cycle pulses

    E-Print Network [OSTI]

    Kling, Matthias

    Strong-field control of the dissociative ionization of N2O with near-single-cycle pulses M Kübel1.1088/1367-2630/16/6/065017 Abstract The dissociative ionization of N2O by near-single-cycle laser pulses is studied using phase, journal citation and DOI. #12;results demonstrate how few-femtosecond dynamics can drive and steer mole

  14. Three-dimensional N=2 (AdS) supergravity and associated supercurrents

    E-Print Network [OSTI]

    Sergei M. Kuzenko; Gabriele Tartaglino-Mazzucchelli

    2012-09-28

    Long ago, Achucarro and Townsend discovered that in three dimensions (3D) N-extended anti-de Sitter (AdS) supergravity exists in several incarnations, which were called the (p,q) AdS supergravity theories with non-negative integers p>=q such that N=p+q. Using the superspace approach to 3D N-extended supergravity developed in arXiv:1101.4013, we present three superfield formulations for N=2 supergravity that allow for well defined cosmological terms and supersymmetric AdS solutions. The conformal compensators corresponding to these theories are respectively: (i) a chiral scalar multiplet: (ii) a vector multiplet; and (iii) an improved complex linear multiplet. The theories corresponding to (i) and (iii) are shown to provide two dually equivalent realizations of the (1,1) AdS supergravity, while (ii) describes the (2,0) AdS supergravity. We associate with each supergravity formulation, with and without a cosmological term, a consistent supercurrent multiplet. The supercurrents in the (1,1) and (2,0) AdS backgrounds are derived for the first time. We elaborate on rigid supersymmetric theories in (1,1) and (2,0) AdS superspaces.

  15. N=2 Supersymmetry, Painleve III and Exact Scaling Functions in 2D Polymers

    E-Print Network [OSTI]

    P. Fendley; H. Saleur

    1992-04-29

    We discuss in this paper various aspects of the off-critical $O(n)$ model in two dimensions. We find the ground-state energy conjectured by Zamolodchikov for the unitary minimal models, and extend the result to some non-unitary minimal cases. We apply our results to the discussion of scaling functions for polymers on a cylinder. We show, using the underlying N=2 supersymmetry, that the scaling function for one non-contractible polymer loop around the cylinder is simply related to the solution of the Painleve III differential equation. We also find the ground-state energy for a single polymer on the cylinder. We check these results by numerically simulating the polymer system. We also analyze numerically the flow to the dense polymer phase. We find there surprising results, with a $c_{\\hbox{eff}}$ function that is not monotonous and seems to have a roaming behavior, getting very close to the values 81/70 and 7/10 between its UV and IR values of 1.

  16. Tillage and seasonal emissions of CO2, N2O and NO across a seed bed and at the field scale in a Mediterranean climate

    E-Print Network [OSTI]

    van Kessel, Chris

    Tillage and seasonal emissions of CO2, N2O and NO across a seed bed and at the field scale tillage may increase N2O emissions under certain circumstances, thereby offsetting C sequestration manage- ment accounted for almost 94% of total US N2O emissions from 1990 to 2004 (USEPA, 2006). In 2004

  17. Electron-Transfer Collisions of Low-Energy Multicharged Nitrogen-Ions with H-2 and N-2

    E-Print Network [OSTI]

    Wang, H. Y.; Church, David A.

    1987-01-01

    VOLUME 36, NUMBER 9 NOVEMBER 1, 1987 Electron-transfer collisions of low-energy multicharged nitrogen ions with H2 and N2 Hua-Ying Wang and D. A. Church Department of Physics, Texas A&M University, College Station, Texas 77843-4242 (Received 27 April... 1987) A stored-ion collision technique has been used to study the charge-changing collisions of mul- ticharged nitrogen ions with H2 and N2 target gases. The ions were produced inside a Penning trap with use of electron-impact ionization. The time...

  18. Computation of the Central Charge for the Leading Order of the N=2 Super-Yang-Mills Effective Action

    E-Print Network [OSTI]

    Sylvain Wolf

    1999-05-26

    The central charge in the N=2 Super-Yang-Mills theory plays an essential role in the work of Seiberg and Witten as it gives the mass spectrum of the BPS states of the quantum theory. Our aim in this note is to present a direct computation of this central charge for the leading order (in a momentum expansion) of the effective action. We will consider the N=2 Super-Yang-Mills theory with gauge group SU(2). The leading order of the effective action is given by the same holomorphic function F appearing in the low energy U(1) effective action.

  19. HNO3, N2O5, and ClONO2 enhancements after the OctoberNovember 2003 solar proton

    E-Print Network [OSTI]

    Jackman, Charles H.

    HNO3, N2O5, and ClONO2 enhancements after the OctoberNovember 2003 solar proton events M. Lo-energy protons which reached the Earth and penetrated into the middle atmosphere in the polar regions solar proton events. Two distinct HNO3 enhancements were observed. An instantaneous increase of 12 ppbv

  20. Nitrous Oxide Nitrous oxide (chemical formula N2O), is a trace gas in Earth's atmosphere, with a

    E-Print Network [OSTI]

    Stevenson, David

    is from the use of nitrogenous fertilizer in the agricultural sector; others include combustion of fossil radiative forcing following a 1 kg pulse emission of N2O, relative to the same quantity following a 1 kg pulse emission of CO2. The GWP time horizon must also be specified typically it is 100 yr, but IPCC

  1. Accurate Modeling of the Siemens S7 SCADA ... JDFSL V9N2 ACCURATE MODELING OF THE SIEMENS S7

    E-Print Network [OSTI]

    Wool, Avishai

    Accurate Modeling of the Siemens S7 SCADA ... JDFSL V9N2 ACCURATE MODELING OF THE SIEMENS S7 SCADA is commonly used in SCADA systems for communications between a Human Machine Interface (HMI.82% of the traffic was identified as normal. Keywords: network, intrusion-detection, SCADA, S7 1. INTRODUCTION

  2. 19Agrociencia (2008) Vol XII N 2 pg. 19 -30 Botryosphaeriaceae from Eucalyptus and Native Myrtaceae in

    E-Print Network [OSTI]

    2008-01-01

    19Agrociencia (2008) Vol XII N 2 pg. 19 - 30 Botryosphaeriaceae from Eucalyptus and Native on plantation grown Eucalyptus globulus. These fungi also exist as endophytes in healthy Eucalyptus leaves that species of the Botryosphaeriaceae, other than those previously reported, could cause cankers on Eucalyptus

  3. MRC Technique for RNS to Decimal Conversion Using the Moduli Set {2n + 2, 2n + 1, 2n}

    E-Print Network [OSTI]

    Cotofana, Sorin

    MRC Technique for RNS to Decimal Conversion Using the Moduli Set {2n + 2, 2n + 1, 2n} Kazeem Alagbe, Navrongo, Ghana. Abstract--This paper investigates the conversion of Residue Number System (RNS) operands to decimal, which is an important issue concerning the utilization of RNS numbers in digital signal

  4. An Improved RNS Reverse Converter for the {22n+1 -1,2n,2n -1} Moduli Set

    E-Print Network [OSTI]

    Cotofana, Sorin

    An Improved RNS Reverse Converter for the {22n+1 -1,2n,2n -1} Moduli Set K.A. Gbolagade1,2, R Residue Number Systems (RNS) have significant ad- vantages over conventional binary number systems tolerance. RNS have been widely applied in Digital Signal Pro- cessing (DSP) applications [5]. However

  5. Dynamics of NO reduction by H2 on Rh(111): Velocity and angular distributions of the N2 product

    E-Print Network [OSTI]

    Sibener, Steven

    examine the dynamics of the NO H2 reaction on the Rh 111 surface by measuring the velocity distribution. Product velocity distributions have been measured for a number of surface reactions, and show a wideDynamics of NO reduction by H2 on Rh(111): Velocity and angular distributions of the N2 product J

  6. Quantum Hall Effect in n-p-n and n-2D Topological Insulator-n Junctions G. M. Gusev,1

    E-Print Network [OSTI]

    Gusev, Guennady

    Quantum Hall Effect in n-p-n and n-2D Topological Insulator-n Junctions G. M. Gusev,1 A. D. Levin,1 TI) with locally controlled density allowing n-p-n and n-2D TI-n junctions. The resistance reveals quantization in the graphene p-n [1] or n-p-n [2,3] junctions, which has been attributed to chiral edge states

  7. Determination of the cross sections of (n,2n), (n,gamma) nuclear reactions on germanium isotopes at the energy of neutrons 13.96 MeV

    E-Print Network [OSTI]

    S. V. Begun; O. G. Druzheruchenko; O. O. Pupirina; V. K. Tarakanov

    2007-01-23

    The cross sections of 70Ge(n,2n)69Ge, 72Ge(n,2n)71Ge, 76Ge(n,gamma)77(g+0.21m)Ge, 76Ge(n,2n)75Ge nuclear reactions were measured at the energy of neutrons 13.96(6) MeV by activation method with gamma-ray and X-ray spectra studies.

  8. High-Permeance Room-Temperature Ionic-Liquid-Based Membranes for CO2/N-2 Separation

    SciTech Connect (OSTI)

    Zhou, JS; Mok, MM; Cowan, MG; McDanel, WM; Carlisle, TK; Gin, DL; Noble, RD

    2014-12-24

    We have developed and fabricated thin-film composite (TFC) membranes with an active layer consisting of a room-temperature ionic liquid/polymerized (room-temperature ionic liquid) [i.e., (RTIL)/poly(RTIL)] composite material. The resulting membrane has a CO2 permeance of 6100 +/- 400 GPU (where 1 GPU = 10(-6) cm(3)/(cm(2) s cmHg)) and an ideal CO2/N-2 selectivity of 22 +/- 2. This represents a new membrane with state-of-the-art CO2 permeance and good CO2/N-2 selectivity. To our knowledge, this is the first example of a TFC gas separation membrane composed of an RTIL-containing active layer.

  9. Impact of air-exposure on the chemical and electronic structure ofZnO:Zn3N2 thin films

    SciTech Connect (OSTI)

    Bar, M.; Ahn, K.-S.; Shet, S.; Yan, Y.; Weinhardt, L.; Fuchs, O.; Blum, M.; Pookpanratana, S.; George, K.; Yang, W.; Denlinger, J.D.; Al-Jassim, M.; Heske, C.

    2008-09-08

    The chemical and electronic surface structure of ZnO:Zn3N2 ("ZnO:N") thin films with different N contents was investigated by soft x-ray emission spectroscopy. Upon exposure to ambient air (in contrast to storage in vacuum), the chemical and electronic surface structure of the ZnO:N films changes substantially. In particular, we find that the Zn3N2/(Zn3N2+ZnO) ratio decreases with exposure time and that this change depends on the initial N content. We suggest a degradation mechanism based on the reaction of the Zn3N2 content with atmospheric humidity.

  10. N = 2 superconformal algebra in NSR string and Gepner approach to space-time supersymmetry in ten dimensions

    E-Print Network [OSTI]

    Belavin, Alexander

    2015-01-01

    The fermionic NSR string possesses a hidden N = 2 superconformal algebra on the world-sheet. In this work, we show how to use an isomorphism of this algebra, the so-called spectral flow, for construction of a subspace of physical states of the string, on which space-time supersymmetry acts. This construction is an alternative to the GSO-projection in string theory.

  11. Innovative Concepts Phase I: Inorganic Membranes for CO2/N2 Separation

    SciTech Connect (OSTI)

    William Desisto

    2003-09-23

    Silica membranes were prepared using a novel technique of catalyzed-atomic layer deposition of silica within a mesoporous matrix. Pyridine was used to catalyze the silicon chloride attachment to the hydroxylated silica surface at room temperature. This half-reaction was followed by the hydration of the surface with water regenerating surface hydroxyls and completing one reaction cycle. The technique resulted in the self-limited pore size reduction of the mesoporous matrix to pore sizes near 1 nm. The self-limited reaction was presumed to be the exclusion of the large catalyst molecule from the pore entrance. In addition to pore size reduction, viscous flow defects were repaired without significantly reducing overall porosity of the membrane. In addition, we investigated the ability of amine-functionalization to enhance the CO{sub 2} transport in silica membranes. Specifically, we examined three synthesis techniques for functionalizing silica membranes with amino groups that resulted in different surface chemistries of the silica membranes. These differences were correlated with changes in the CO{sub 2} facilitation characteristics. It was found that high loadings of amino groups where interaction with the silica surface was minimized promoted the highest CO{sub 2} transport.

  12. SYNTHESIS OF THE FULLY PROTECTED PHOSPHORAMIDITE OF THE BENZENE-DNA ADDUCT, N2- (4-HYDROXYPHENYL)-2'-DEOXYGUANOSINE AND INCORPORATION OF THE LATER INTO DNA OLIGOMERS

    SciTech Connect (OSTI)

    Chenna, Ahmed; Gupta, Ramesh C.; Bonala, Radha R.; Johnson, Francis; Huang, Bo

    2008-06-09

    N2-(4-Hydroxyphenyl)-2'-deoxyguanosine-5'-O-DMT-3'-phosphoramidite has been synthesized and used to incorporate the N2-(4-hydroxyphenyl)-2'-dG (N2-4-HOPh-dG) into DNA, using solid-state synthesis technology. The key step to obtaining the xenonucleoside is a palladium (Xantphos-chelated) catalyzed N2-arylation (Buchwald-Hartwig reaction) of a fully protected 2'-deoxyguanosine derivative by 4-isobutyryloxybromobenzene. The reaction proceeded in good yield and the adduct was converted to the required 5'-O-DMT-3'-O-phosphoramidite by standard methods. The latter was used to synthesize oligodeoxynucleotides in which the N2-4-HOPh-dG adduct was incorporated site-specifically. The oligomers were purified by reverse-phase HPLC. Enzymatic hydrolysis and HPLC analysis confirmed the presence of this adduct in the oligomers.

  13. BPS black holes in a non-homogeneous deformation of the stu model of $N=2$, $D=4$ gauged supergravity

    E-Print Network [OSTI]

    Dietmar Klemm; Alessio Marrani; Nicol Petri; Camilla Santoli

    2015-07-20

    We consider a deformation of the well-known stu model of $N=2$, $D=4$ supergravity, characterized by a non-homogeneous special K\\"{a}hler manifold, and by the smallest electric-magnetic duality Lie algebra consistent with its upliftability to five dimensions. We explicitly solve the BPS attractor equations and construct static supersymmetric black holes with radial symmetry, in the context of $\\text{U}(1)$ dyonic Fayet-Iliopoulos gauging, focussing on axion-free solutions. Due to non-homogeneity of the scalar manifold, the model evades the analysis recently given in the literature. The relevant physical properties of the resulting black hole solution are discussed.

  14. BPS black holes in a non-homogeneous deformation of the stu model of $N=2$, $D=4$ gauged supergravity

    E-Print Network [OSTI]

    Klemm, Dietmar; Petri, Nicol; Santoli, Camilla

    2015-01-01

    We consider a deformation of the well-known stu model of $N=2$, $D=4$ supergravity, characterized by a non-homogeneous special K\\"{a}hler manifold, and by the smallest electric-magnetic duality Lie algebra consistent with its upliftability to five dimensions. We explicitly solve the BPS attractor equations and construct static supersymmetric black holes with radial symmetry, in the context of $\\text{U}(1)$ dyonic Fayet-Iliopoulos gauging, focussing on axion-free solutions. Due to non-homogeneity of the scalar manifold, the model evades the analysis recently given in the literature. The relevant physical properties of the resulting black hole solution are discussed.

  15. A $\\mathcal{N}=2$ Supersymmetric $AdS_4$ Solution in M-theory with Purely Magnetic Flux

    E-Print Network [OSTI]

    Yolanda Lozano; Niall T. Macpherson; Jess Montero

    2015-07-10

    We find a new $\\mathcal{N}=2$ $AdS_4$ solution in M-theory supported by purely magnetic flux via a sequence of abelian and non-abelian T-dualities. This provides the second known example in this class besides the uplift of the Pernici and Sezgin solution to 7d gauged supergravity constructed in the eighties. We compute the free energy of the solution, and show that it scales as $N^{3/2}$. It is intriguing that even though the natural holographic interpretation is in terms of M5-branes wrapped on a special Lagrangian 3-cycle, this solution does not exhibit the expected $N^3$ behavior.

  16. Characteristics of uranium carbonitride microparticles synthesized using different reaction conditions

    SciTech Connect (OSTI)

    Silva, Chinthaka M; Lindemer, Terrence; Voit, Stewart L; Hunt, Rodney Dale; Besmann, Theodore M; Terrani, Kurt A; Snead, Lance Lewis

    2014-11-01

    Three sets of different experimental conditions by changing the cover gases during the sample preparation were tested to synthesize uranium carbonitride (UC1-xNx) microparticles. In the first two sets of experiments using (N2 to N2-4%H2 to Ar) and (Ar to N2 to Ar) environments, single phase UC1-xNx was synthesized. When reducing environments (Ar-4%H2 to N2-4%H2 to Ar-4%H2) were utilized, theoretical densities up to 97% of single phase UC1-xNx kernels were obtained. Physical and chemical characteristics such as density, phase purity, and chemical compositions of the synthesized UC1-xNx materials for the diferent experimental conditions used are provided. In-depth analysis of the microstrutures of UC1-xNx has been carried out and is discussed with the objective of large batch fabrication of high density UC1-xNx kernels.

  17. Accretions of Dark Matter and Dark Energy onto ($n+2$)-dimensional Schwarzschild Black Hole and Morris-Thorne Wormhole

    E-Print Network [OSTI]

    Ujjal Debnath

    2015-03-06

    We have studied accretion of the dark matter and dark energy onto of $(n+2)$-dimensional Schwarzschild black hole and Morris-Thorne wormhole. The mass and the rate of change of mass for $(n+2)$-dimensional Schwarzschild black hole and Morris-Thorne wormhole have been found. We have assumed some candidates of dark energy like holographic dark energy, new agegraphic dark energy, quintessence, tachyon, DBI-essence, etc. The black hole mass and the wormhole mass have been calculated in term of redshift when dark matter and above types of dark energies accrete onto them separately. We have shown that the black hole mass increases and wormhole mass decreases for holographic dark energy, new agegraphic dark energy, quintessence, tachyon accretion and the slope of increasing/decreasing of mass sensitively depends on the dimension. But for DBI-essence accretion, the black hole mass first increases and then decreases and the wormhole mass first decreases and then increases and the slope of increasing/decreasing of mass not sensitively depends on the dimension.

  18. Coupling of alcohols to ethers: The dominance of the surface S{sub N}2 reaction pathway

    SciTech Connect (OSTI)

    Klier, K.; Feeley, O.C.; Johansson, M.; Herman, R.G.

    1996-12-31

    Coupling of alcohols to ethers, important high value oxygenates, proceeds on acid catalysts via general pathways that uniquely control product composition, oxygen retention, chirality inversion, and kinetics. The dominant pathway is the S{sub N}2 reaction with competition of the alcohols for the surface acid sites. This is exemplified by formation of methyl(ethyl) isobutylether (M(E)IBE) from methanol(ethanol)/isobutanol mixtures, retention of oxygen ({sup 18}O) of the heavier alcohol, and optimum rate as a function of concentration of either reactant alcohol. The S{sub N}2 pathway in the confinement of zeolite pores exhibits additional features of a near-100% selectivity to dimethylether (DME) in H-mordenite and a near-100% selectivity to chiral inversion in 2-pentanol/ethanol coupling to 2-ethoxypentane in HZSM-5. A minor reaction pathway entails olefin or carbenium intermediates, as exemplified by the formation of methyl tertiarybutyl ether (MTBE) from methanol/isobutanol mixtures with oxygen retention of the lighter alcohol. Calculations of transition state and molecular modeling of the oxonium-involving pathways dramatically demonstrate how the reaction path selects the products.

  19. Effects of EGR, water/N2/CO2 injection and oxygen enrichment on the availability destroyed due to combustion for a range of conditions and fuels

    E-Print Network [OSTI]

    Sivadas, Hari Shanker

    2009-06-02

    This study was directed at examining the effects of exhaust gas recirculation (EGR), water/N2/CO2 injections and oxygen enrichment on availability destroyed because of combustion in simple systems like those of constant ...

  20. Lean NOx Trap Regeneration Selectivity Towards N2O-- Similarities and Differences Between H2, CO and C3H6 Reductants

    Broader source: Energy.gov [DOE]

    At lower-intermediate exhaust temperatures, N2O is emitted in two peaks. This presentation uses a global model for the primary and secondary peaks to explain the chemical reactions.

  1. Characteristic Evolution and Matching

    E-Print Network [OSTI]

    Jeffrey Winicour

    2005-12-08

    I review the development of numerical evolution codes for general relativity based upon the characteristic initial value problem. Progress is traced from the early stage of 1D feasibility studies to 2D axisymmetric codes that accurately simulate the oscillations and gravitational collapse of relativistic stars and to current 3D codes that provide pieces of a binary black spacetime. A prime application of characteristic evolution is to compute waveforms via Cauchy-characteristic matching, which is also reviewed.

  2. Jacobi Forms of Higher Index and Paramodular Groups in N=2, D=4 Compactifications of String Theory

    E-Print Network [OSTI]

    Caner Nazaroglu

    2013-09-25

    We associate a Jacobi form over a rank s lattice to N=2, D=4 heterotic string compactifications which have s Wilson lines at a generic point in the vector multiplet moduli space. Jacobi forms of index m=1 and m=2 have appeared earlier in the context of threshold corrections to heterotic string couplings. We emphasize that higher index Jacobi forms as well as Jacobi forms of several variables over more generic even lattices also appear and construct models in which they arise. In particular, we construct an orbifold model which can be connected to models that give index m=3, 4 or 5 Jacobi forms through the Higgsing process. Constraints from being a Jacobi form are then employed to get threshold corrections using only partial information on the spectrum. We apply this procedure for index m=3, 4 or 5 Jacobi form examples and also for Jacobi forms over A_2 and A_3 root lattices. Examples with a single Wilson line are examined in detail and we display the relation of Siegel forms over a paramodular group \\Gamma_m to these models, where \\Gamma_m is associated with the T-duality group of the models we study. Finally, results on the heterotic string side are used to clarify the linear mapping of vector multiplet moduli to Type IIA duals without using the one-loop cubic part of the prepotential on the Type II side, and also to give predictions for the geometry of the dual Calabi-Yau manifolds.

  3. Twisted compactification of N=2 5D SCFTs to three and two dimensions from F(4) gauged supergravity

    E-Print Network [OSTI]

    Karndumri, Parinya

    2015-01-01

    We study supersymmetric $AdS_4\\times \\Sigma_2$ and $AdS_3\\times \\Sigma_3$ solutions in half-maximal gauged supergravity in six dimensions with $SU(2)_R\\times SU(2)$ gauge group. The gauged supergravity is obtained by coupling three vector multiplets to the pure $F(4)$ gauged supergravity. The $SU(2)_R$ R-symmetry together with the $SO(3)\\sim SU(2)$ symmetry of the vector multiplets are gauged. The resulting gauged supergravity admits supersymmetric $AdS_6$ critical points with $SO(4)\\sim SU(2)\\times SU(2)$ and $SO(3)\\sim SU(2)_{\\textrm{diag}}$ symmetries. The former corresponds to five-dimensional $N=2$ superconformal field theories (SCFTs) with $E_1\\sim SU(2)$ symmetry. We find new classes of supersymmetric $AdS_4\\times \\Sigma_2$ and $AdS_3\\times \\Sigma_3$ solutions with $\\Sigma_{2,3}$ being $S^{2,3}$ and $H^{2,3}$. These solutions describe SCFTs in three and two dimensions obtained from twisted compactifications of the aforementioned five-dimensional SCFTs with different numbers of unbroken supersymmetry an...

  4. Characteristic Evolution and Matching

    E-Print Network [OSTI]

    Jeffrey Winicour

    2012-01-12

    I review the development of numerical evolution codes for general relativity based upon the characteristic initial value problem. Progress in characteristic evolution is traced from the early stage of 1D feasibility studies to 2D axisymmetric codes that accurately simulate the oscillations and gravitational collapse of relativistic stars and to current 3D codes that provide pieces of a binary black hole spacetime. Cauchy codes have now been successful at simulating all aspects of the binary black hole problem inside an artificially constructed outer boundary. A prime application of characteristic evolution is to extend such simulations to null infinity where the waveform from the binary inspiral and merger can be unambiguously computed. This has now been accomplished by Cauchy-characteristic extraction, where data for the characteristic evolution is supplied by Cauchy data on an extraction worldtube inside the artificial outer boundary. The ultimate application of characteristic evolution is to eliminate the role of this outer boundary by constructing a global solution via Cauchy-characteristic matching. Progress in this direction is discussed.

  5. 47Agrociencia. (2006) Vol. X N 2 pg. 47 -61 CAMBIOS EN EL USO DE LA TIERRA EN ARGENTINA Y URUGUAY

    E-Print Network [OSTI]

    Nacional de San Luis, Universidad

    2006-01-01

    47Agrociencia. (2006) Vol. X N 2 pg. 47 - 61 CAMBIOS EN EL USO DE LA TIERRA EN ARGENTINA Y. Buenos Aires, Argentina. 2 Ecologa Terrestre, Facultad de Ciencias Universidad de la Repblica. Montevideo. Uruguay. 3 Grupo de Estudios Ambientales Universidad Nacional de San Luis. San Luis. Argentina

  6. UNIVERSITY OF ILLINOIS AT URBANA-CHAMPAIGN S T R AT E G I C P L A N 2 0 1 3 -1 6

    E-Print Network [OSTI]

    Liberzon, Daniel

    , Professsor Department of Physics Robert Hauser, Dean College of ACES Stig Lanesskog, Associate Provost OfficeUNIVERSITY OF ILLINOIS AT URBANA-CHAMPAIGN S T R AT E G I C P L A N 2 0 1 3 - 1 6 #12;Strategic Vice Provost - Office of the Provost Kenneth Ballom, Dean Office of the Dean of Students Jeffrey Brown

  7. Ultrasimple calculation of very-low-energy momentum-transfer and rotational-excitation cross sections: e-N2 scattering

    E-Print Network [OSTI]

    Morrison, Michael A.

    Ultrasimple calculation of very-low-energy momentum-transfer and rotational-excitation cross energies. We apply this method to the calculation of e-N2 momentum-transfer and rotational excitation cross. INTRODUCTION Integral elastic, momentum transfer, and rotational exci- tation cross sections at energies below

  8. Off-shell Invariant D=N=2 Twisted Super Yang-Mills Theory with a Gauged Central Charge without Constraints

    E-Print Network [OSTI]

    Asaka, Keisuke; Kawamoto, Noboru; Miyake, Akiko

    2013-01-01

    We formulate N=2 twisted super Yang-Mills theory with a gauged central charge by superconnection formalism in two dimensions. We obtain off-shell invariant supermultiplets and actions with and without constraints, which is in contrast with the off-shell invariant D=N=4 super Yang-Mills formulation with unavoidable constraints.

  9. Off-shell Invariant D=N=2 Twisted Super Yang-Mills Theory with a Gauged Central Charge without Constraints

    E-Print Network [OSTI]

    Keisuke Asaka; Junji Kato; Noboru Kawamoto; Akiko Miyake

    2013-09-18

    We formulate N=2 twisted super Yang-Mills theory with a gauged central charge by superconnection formalism in two dimensions. We obtain off-shell invariant supermultiplets and actions with and without constraints, which is in contrast with the off-shell invariant D=N=4 super Yang-Mills formulation with unavoidable constraints.

  10. IL NUOVO CIMENTO Vol. 110 B, N. 2 Febbraio 1995 A novel method to detect quantum states of the radiation field

    E-Print Network [OSTI]

    Paris, Matteo G. A.

    . --- We propose a new method for detecting the density matrix of the radiation field via optical homodyneIL NUOVO CIMENTO Vol. 110 B, N. 2 Febbraio 1995 A novel method to detect quantum states of the radiation field G. M. D'Ariano ( 1 )( 2 ), Chiara Macchiavello( 1 ), Matteo G. A. Paris( 1 ) ( 1

  11. Nighttime NO3y chemistry: In situ Observation of the Various Removal Pathways of NO3 and N2O5 around the UK

    E-Print Network [OSTI]

    Jackson, Sophie

    and synoptic wind suggest air mass originated from the European continent; High aerosol organics in this aged on the left shows a typical scenario when urban emitted NO2 was transported to > 3 km, forming N2O5 which and to falling ice were frequently observed (even though days with forecast precipitation were deliberately

  12. Q1 Consider the n = 1 and n = 2 states of an electron in a hydrogen atom. The energy eigenfunctions nlm(r, , ) are

    E-Print Network [OSTI]

    Lee, Tonghun

    Q1 Consider the n = 1 and n = 2 states of an electron in a hydrogen atom. The energy eigenfunctions for the spherical harmonics Y m l (, ) may be found in the formul pages at the beginning of the exam. The hydrogen energy due to H is zero. You may do this by either explicit calculation, or by applying selection rules

  13. Modeling impacts of farming management alternatives on CO2, CH4, and N2O emissions: A case study for water management of rice

    E-Print Network [OSTI]

    emissions about 40%, or 5 Tg CH4 yr1 , roughly 510% of total global methane emissions from rice paddies contribution to the net climate impact due to the low radiative potential of CO2. The change in water. Introduction [2] Food production contributes approximately 70% of global atmospheric input of nitrous oxide (N2

  14. Optical Nonlinearity in Ar and N2 near the Ionization Threshold J. K. Wahlstrand, Y.-H. Cheng, Y.-H. Chen, and H. M. Milchberg

    E-Print Network [OSTI]

    Milchberg, Howard

    Optical Nonlinearity in Ar and N2 near the Ionization Threshold J. K. Wahlstrand, Y.-H. Cheng, Y measure the nonlinear optical response in argon and nitrogen in a thin gas target to laser intensities.103901 PACS numbers: 42.65.An, 42.65.Jx, 42.65.Re The optical Kerr effect, the intensity-dependent refrac

  15. Evidence for inelastic processes for N3 and N4 from ion energy distributions in He/N2 radio frequency glow discharges

    E-Print Network [OSTI]

    Kushner, Mark

    Evidence for inelastic processes for N3 and N4 from ion energy distributions in He/N2 radio May 1995; accepted for publication 19 September 1995 The ion energy distributions IEDs striking. The importance of the distributions of ion energies and angles striking the wafer in obtaining straight walled

  16. Characteristic (Version A)

    E-Print Network [OSTI]

    Characteristic Solar AUV (Version A) Solar AUV (Version B) Depth 1000 m 1000 m Daily transit 30 m2 1.8 m2 Weight 90 kg 200 kg Figure 1 Solar Powered AUV Testbeds Solar Powered Autonomous Undersea that impact. Low cost, unmanned, long endurance mobile sampling systems are, in many cases, a desirable

  17. European Journal of Soil Science, December 2010, 61, 903913 doi: 10.1111/j.1365-2389.2009.01217.x Towards an agronomic assessment of N2O emissions

    E-Print Network [OSTI]

    van Kessel, Chris

    that of CO2, and an atmospheric lifetime of about 120 years (IPCC, 2007). It also contributes source of N2O. It has been estimated that total anthropogenic emissions are 6.7 Tg N2O-N year-1, 42 Towards an agronomic assessment of N2O emissions: a case study for arable crops J . W . V a n G r o e n i

  18. Multielectron effects in high harmonic generation in N_2 and benzene: simulation using a non-adiabatic quantum molecular dynamics approach for laser-molecule interactions

    E-Print Network [OSTI]

    Dundas, Daniel

    2012-01-01

    A mixed quantum-classical approach is introduced which allows the dynamically response of molecules driven far from equilibrium to be modeled. This method is applied here to the interaction of molecules with intense, short-duration laser pulses. The electronic response of the molecule is described using time-dependent density functional theory (TDDFT) and the resulting Kohn-Sham equations are solved numerically using finite difference techniques in conjunction with local and global adaptations of an underlying grid in curvilinear coordinates. Using this approach, simulations can be carried out for a wide range of molecules and both all-electron and pseudopotential calculations can be performed. The approach is applied to the study of high harmonic generation in N_2 and benzene using linearly-polarized laser pulses and to the best of our knowledge, the results for benzene represent the first TDDFT calculations of high harmonic generation in benzene using linearly polarized laser pulses. For N_2 an enhancement ...

  19. 15N2 formation and fast oxygen isotope exchange during pulsed 15N18O exposure of MnOx/CeO2

    SciTech Connect (OSTI)

    Kwak, Ja Hun; Szanyi, Janos

    2014-12-23

    Pulsing 15N18O onto an annealed 1% Mn16Ox/Ce16O2 catalyst resulted in very fast oxygen isotope exchange and 15N2 formation at 295 K. In the 1st 15N18O pulse, due to the presence of large number of surface oxygen defects, extensive 15N218O and 15N2 formations were observed. In subsequent pulses oxygen isotope exchange dominated as a result of highly labile oxygen in the oxide. We gratefully acknowledge the US Department of Energy (DOE), Office of Energy Efficiency and Renewable Energy/Vehicle Technologies Program for the support of this work. The research described in this paper was performed at the Environmental Molecular Sciences Laboratory (EMSL), a national scientific user facility sponsored by the DOEs Office of Biological and Environmental Research and located at Pacific Northwest National Laboratory (PNNL). PNNL is operated for the US DOE by Battelle.

  20. Herschel-HIFI observations of H2O, NH3 and N2H+ toward high-mass starless and proto-stellar clumps identified by the Hi-GAL survey

    E-Print Network [OSTI]

    Olmi, Luca; Codella, Claudio

    2015-01-01

    Our present understanding of high-mass star formation still remains very schematic. In particular, it is not yet clear how much of the difference between low-mass and high-mass star formation occurs during the earliest star formation phases. The chemical characteristics of massive cold clumps, and the comparison with those of their low-mass counterparts, could provide crucial clues about the exact role that chemistry plays in differentiating the early phases of low-mass and high-mass star formation. Water, in particular, is a unique probe of physical and chemical conditions in star-forming regions. Using the HIFI instrument of Herschel we have observed the ortho-NH3 (1_0-0_0) (572GHz), ortho-H2O (1_10-1_01) (557GHz) and N2H+ (6-5) (559GHz) lines toward a sample of high-mass starless and proto-stellar clumps selected from the "Herschel} Infrared Galactic Plane Survey" (Hi-GAL). We compare our results to previous studies of low-mass and high-mass proto-stellar objects. At least one of the three molecular lines ...

  1. WRF-Chem model predictions of the regional impacts of N2O5 heterogeneous processes on night-time chemistry over north-western Europe

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

    Lowe, Douglas; Archer-Nicholls, Scott; Morgan, Will; Allan, James D.; Utembe, Steve; Ouyang, Bin; Aruffo, Eleonora; Le Breton, Michael; Zaveri, Rahul A.; di Carlo, Piero; et al

    2015-02-09

    Chemical modelling studies have been conducted over north-western Europe in summer conditions, showing that night-time dinitrogen pentoxide (N2O5) heterogeneous reactive uptake is important regionally in modulating particulate nitrate and has a~modest influence on oxidative chemistry. Results from Weather Research and Forecasting model with Chemistry (WRF-Chem) model simulations, run with a detailed volatile organic compound (VOC) gas-phase chemistry scheme and the Model for Simulating Aerosol Interactions and Chemistry (MOSAIC) sectional aerosol scheme, were compared with a series of airborne gas and particulate measurements made over the UK in July 2010. Modelled mixing ratios of key gas-phase species were reasonably accurate (correlationsmorewith measurements of 0.70.9 for NO2 and O3). However modelled loadings of particulate species were less accurate (correlation with measurements for particulate sulfate and ammonium were between 0.0 and 0.6). Sulfate mass loadings were particularly low (modelled means of 0.50.7 ?g kg?1air, compared with measurements of 1.01.5 ?g kg?1air). Two flights from the campaign were used as test cases one with low relative humidity (RH) (6070%), the other with high RH (8090%). N2O5 heterogeneous chemistry was found to not be important in the low-RH test case; but in the high-RH test case it had a strong effect and significantly improved the agreement between modelled and measured NO3 and N2O5. When the model failed to capture atmospheric RH correctly, the modelled NO3 and N2O5 mixing ratios for these flights differed significantly from the measurements. This demonstrates that, for regional modelling which involves heterogeneous processes, it is essential to capture the ambient temperature and water vapour profiles. The night-time NO3 oxidation of VOCs across the whole region was found to be 100300 times slower than the daytime OH oxidation of these compounds. The difference in contribution was less for alkenes ( 80) and comparable for dimethylsulfide (DMS). However the suppression of NO3 mixing ratios across the domain by N2O5 heterogeneous chemistry has only a very slight, negative, influence on this oxidative capacity. The influence on regional particulate nitrate mass loadings is stronger. Night-time N2O5 heterogeneous chemistry maintains the production of particulate nitrate within polluted regions: when this process is taken into consideration, the daytime peak (for the 95th percentile) of PM10 nitrate mass loadings remains around 5.6 ?g kg?1air, but the night-time minimum increases from 3.5 to 4.6 ?g kg?1air. The sustaining of higher particulate mass loadings through the night by this process improves model skill at matching measured aerosol nitrate diurnal cycles and will negatively impact on regional air quality, requiring this process to be included in regional models.less

  2. Multispectrum analysis of the v9 band of 12C2H6: Positions, intensities, self- and N2-broadened half-width coefficients

    SciTech Connect (OSTI)

    Devi, V. Malathy; Rinsland, Curtis P.; Benner, D. C.; Sams, Robert L.; Blake, Thomas A.

    2010-06-01

    Line positions, intensities, Lorentz self- and N2-broadened half-width coefficients have been measured for PQ3, PQ2, PQ1, RQ0,RQ1, RQ2, and RQ3 sub-band transitions in the 9 fundamental band of 12C2H6. A multispectrum nonlinear least-squares fitting technique was used to fit up to 17 high-resolution (~0.00156 cm-1), room temperature absorption spectra of pure (99.99% chemical purity) natural sample of ethane and lean mixtures of the high-purity ethane diluted with N2. A Bruker IFS 120HR Fourier transform spectrometer located at the Pacific Northwest National Laboratory (PNNL), in Richland, Washington was used to record the data. A standard Voigt line shape was assumed to fit all the data since no line mixing or other non Voigt line shapes were required to fit any of the spectra used in the analysis. Short spectral intervals (~2 to 2.5 cm-1) of all 17 spectra covering a specific PQ or RQ sub band were fit simultaneously. For the first time in an ethane band, pressure-broadened half-width coefficients were determined for each of the torsional-split components. Constraints were used such that the half-width coefficients of both torsional-split components were identical for a specific broadening gas. No pressure-induced shift coefficients were necessary to fit the spectra to their noise level. The present study revealed for the first time the dependence of self- and N2-broadened half-width coefficients upon the J, K quantum numbers of the transitions in ethane. A number of transitions belonging to the 9+ 4- 4 and the 9+2 4-2 4 hot bands were also observed in the fitted regions and measurements were made when possible.

  3. Wafer characteristics via reflectometry

    DOE Patents [OSTI]

    Sopori, Bhushan L. (Denver, CO)

    2010-10-19

    Various exemplary methods (800, 900, 1000, 1100) are directed to determining wafer thickness and/or wafer surface characteristics. An exemplary method (900) includes measuring reflectance of a wafer and comparing the measured reflectance to a calculated reflectance or a reflectance stored in a database. Another exemplary method (800) includes positioning a wafer on a reflecting support to extend a reflectance range. An exemplary device (200) has an input (210), analysis modules (222-228) and optionally a database (230). Various exemplary reflectometer chambers (1300, 1400) include radiation sources positioned at a first altitudinal angle (1308, 1408) and at a second altitudinal angle (1312, 1412). An exemplary method includes selecting radiation sources positioned at various altitudinal angles. An exemplary element (1650, 1850) includes a first aperture (1654, 1854) and a second aperture (1658, 1858) that can transmit reflected radiation to a fiber and an imager, respectfully.

  4. R-matrix calculation of integral and differential cross sections for low-energy electron impact excitations of N2 molecule

    E-Print Network [OSTI]

    Motomichi Tashiro; Keiji Morokuma

    2006-12-21

    Low-energy electron impact excitations of N$_2$ molecules are studied using the fixed-bond R-matrix method based on state-averaged complete active space SCF orbitals. Thirteen target electronic states of N$_2$ are included in the model within a valence configuration interaction representations of the target states. Integrated as well as differential cross sections of the $A^{3} \\Sigma_{u}^{+}$, $B^{3} \\Pi_{g}$, $W^{3} \\Delta_{u}$, ${B'}^{3} \\Sigma_{u}^{-}$, ${a'}^{1} \\Sigma_{u}^{-}$, $a^{1} \\Pi_{g}$, $w^{1} \\Delta_{u}$ and $C^{3} \\Pi_{u}$ states are calculated and compared with the previous experimental measurements. These excitations, especially of the higher four states, have not been studied enough theoretically in the previous literature. In general, good agreements are observed both in the integrated and differential cross sections. However, some discrepancies are seen in the integrated cross sections of the $A^{3} \\Sigma_{u}^{+}$ and $C^{3} \\Pi_{u}$ states, especially around a peak structure.

  5. A New Equation of State for CCS Pipeline Transport: Calibration of Mixing Rules for Binary Mixtures of CO2 with N2, O2 and H2

    E-Print Network [OSTI]

    Demetriades, Thomas A

    2015-01-01

    One of the aspects currently holding back commercial scale deployment of carbon capture and storage (CCS) is an accurate understanding of the thermodynamic behaviour of carbon dioxide and relevant impurities during the pipeline transport stage. In this article we develop a general framework for deriving pressure-explicit EoS for impure CO2. This flexible framework facilitates ongoing development of custom EoS in response to new data and computational applications. We use our method to generalise a recent EoS for pure CO2 [Demetriades et al. Proc IMechE Part E, 227 (2013) pp. 117] to binary mixtures with N2, O2 and H2, obtaining model parameters by fitting to experiments made under conditions relevant to CCS-pipeline transport. Our model pertains to pressures up to 16MPa and temperatures between 273K and the critical temperature of pure CO2. In this region, we achieve close agreement with experimental data. When compared to the GERG EoS, our EoS has a comparable level of agreement with CO2 -N2 VLE experiments ...

  6. Sensor Characteristics Reference Guide

    SciTech Connect (OSTI)

    Cree, Johnathan V.; Dansu, A.; Fuhr, P.; Lanzisera, Steven M.; McIntyre, T.; Muehleisen, Ralph T.; Starke, M.; Banerjee, Pranab; Kuruganti, T.; Castello, C.

    2013-04-01

    The Buildings Technologies Office (BTO), within the U.S. Department of Energy (DOE), Office of Energy Efficiency and Renewable Energy (EERE), is initiating a new program in Sensor and Controls. The vision of this program is: Buildings operating automatically and continuously at peak energy efficiency over their lifetimes and interoperating effectively with the electric power grid. Buildings that are self-configuring, self-commissioning, self-learning, self-diagnosing, self-healing, and self-transacting to enable continuous peak performance. Lower overall building operating costs and higher asset valuation. The overarching goal is to capture 30% energy savings by enhanced management of energy consuming assets and systems through development of cost-effective sensors and controls. One step in achieving this vision is the publication of this Sensor Characteristics Reference Guide. The purpose of the guide is to inform building owners and operators of the current status, capabilities, and limitations of sensor technologies. It is hoped that this guide will aid in the design and procurement process and result in successful implementation of building sensor and control systems. DOE will also use this guide to identify research priorities, develop future specifications for potential market adoption, and provide market clarity through unbiased information

  7. Influenza A H3N2 subtype virus NS1 protein targets into the nucleus and binds primarily via its C-terminal NLS2/NoLS to nucleolin and fibrillarin

    E-Print Network [OSTI]

    Meln, Krister; Tynell, Janne; Fagerlund, Riku; Roussel, Pascal; Hernandez-Verdun, Danile; Julkunen, Ilkka

    2012-01-01

    Influenza A H3N2 subtype virus NS1 protein targets into theBinding of the influenza A virus NS1 protein to PKR mediatespathogenic H5N1 influenza virus. Nature 2008, 456:985988.

  8. CBECS Buildings Characteristics --Revised Tables

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

    Totals and Means of Floorspace, Number of Workers, and Hours of Operation, 1995 Building Characteristics RSE Column Factor: All Buildings (thousand) Total Floorspace (million...

  9. Neutron scattering evidence for isolated spin-1/2 ladders in (C5D12N)2CuBr4

    SciTech Connect (OSTI)

    Savici, Andrei T [ORNL; Granroth, Garrett E [ORNL; Broholm, Collin L [ORNL; Pajerowski, Daniel M. [University of Florida, Gainesville; Brown, Craig [National Institute of Standards and Technology (NIST); Talham, Daniel R. [University of Florida, Gainesville; Meisel, Mark W. [University of Florida, Gainesville; Schmidt, K. P. [Technische Universit Dortmund, Germany; Uhrig, G. S. [Technische Universit Dortmund, Germany; Nagler, Stephen E [ORNL

    2009-01-01

    Inelastic neutron scattering was used to determine the spin Hamiltonian for the singlet ground state system (C5D12N)2CuBr4 (BPCB). A 2-leg spin 1/2 ladder model, with J? = 1:084 0:005 meV and Jk = 0:321 0:008 meV, accurately describes the data. The experimental limit on the inter-ladder exchange constant is jJ0j 0.005 meV, and the limit on diagonal, intra-ladder exchange is jJF j 0.1 meV. The experimental ratios of intra-ladder bond energies are consistent with the predictions of continuous unitary transformations calculations.

  10. A Taxonomy of Usability Characteristics

    E-Print Network [OSTI]

    Gabbard, Joseph L.

    A Taxonomy of Usability Characteristics in Virtual Environments Deliverable to Office of Naval This document can be found at http://csgrad.cs.vt.edu/jgabbard/ve/taxonomy/ #12;#12;A Taxonomy of Usability accomplished, yielding a comprehensive multi-dimensional taxonomy of usability characteristics specifically

  11. SEDIMENTATION CHARACTERISTICS OF Giardia intestinalis

    E-Print Network [OSTI]

    Thomas, Dave

    SEDIMENTATION CHARACTERISTICS OF Giardia intestinalis CYSTS--RELEVANCE TO STANDARD METHODS _________________________________ _________________________________ #12;iii SEDIMENTATION CHARACTERISTICS OF Giardia intestinalis CYSTS--RELEVANCE TO STANDARD METHODS OF DETECTION By David J. Thomas May 1993 I investigated the sedimentation time of Giardia intestinalis cysts

  12. Temporal Nodal Regression and Regional Control After Primary Radiation Therapy for N2-N3 Head-and-Neck Cancer Stratified by HPV Status

    SciTech Connect (OSTI)

    Huang, Shao Hui; O'Sullivan, Brian; Ringash, Jolie; Hope, Andrew; Gilbert, Ralph; Irish, Jonathan; Perez-Ordonez, Bayardo; Weinreb, Ilan; Waldron, John

    2013-12-01

    Purpose: To compare the temporal lymph node (LN) regression and regional control (RC) after primary chemoradiation therapy/radiation therapy in human papillomavirus-related [HPV(+)] versus human papillomavirus-unrelated [HPV(?)] head-and-neck cancer (HNC). Methods and Materials: All cases of N2-N3 HNC treated with radiation therapy/chemoradiation therapy between 2003 and 2009 were reviewed. Human papillomavirus status was ascertained by p16 staining on all available oropharyngeal cancers. Larynx/hypopharynx cancers were considered HPV(?). Initial radiologic complete nodal response (CR) (?1.0 cm 8-12 weeks after treatment), ultimate LN resolution, and RC were compared between HPV(+) and HPV(?) HNC. Multivariate analysis identified outcome predictors. Results: A total of 257 HPV(+) and 236 HPV(?) HNCs were identified. The initial LN size was larger (mean, 2.9 cm vs 2.5 cm; P<.01) with a higher proportion of cystic LNs (38% vs 6%, P<.01) in HPV(+) versus HPV(?) HNC. CR was achieved is 125 HPV(+) HNCs (49%) and 129 HPV(?) HNCs (55%) (P=.18). The mean post treatment largest LN was 36% of the original size in the HPV(+) group and 41% in the HPV(?) group (P<.01). The actuarial LN resolution was similar in the HPV(+) and HPV(?) groups at 12 weeks (42% and 43%, respectively), but it was higher in the HPV(+) group than in the HPV(?) group at 36 weeks (90% vs 77%, P<.01). The median follow-up period was 3.6 years. The 3-year RC rate was higher in the HPV(?) CR cases versus non-CR cases (92% vs 63%, P<.01) but was not different in the HPV(+) CR cases versus non-CR cases (98% vs 92%, P=.14). On multivariate analysis, HPV(+) status predicted ultimate LN resolution (odds ratio, 1.4 [95% confidence interval, 1.1-1.7]; P<.01) and RC (hazard ratio, 0.3 [95% confidence interval 0.2-0.6]; P<.01). Conclusions: HPV(+) LNs involute more quickly than HPV(?) LNs but undergo a more prolonged process to eventual CR beyond the time of initial assessment at 8 to 12 weeks after treatment. Post radiation neck dissection is advisable for all non-CR HPV(?)/non-CR N3 HPV(+) cases, but it may be avoided for selected non-CR N2 HPV(+) cases with a significant LN involution if they can undergo continued imaging surveillance. The role of positron emission tomography for response assessment should be investigated.

  13. Status Characteristics and Expectation States

    E-Print Network [OSTI]

    Berger, Joseph; Cohen, Bernard P.; Zelditch, Morris Jr.

    2015-07-19

    -Type text/plain; charset=UTF-8 STATUS CHARACTERISTICS AND EXPECTATION STATES* Joseph Berger Bernard P. Cohen Morris Zelditch, Jr. Research for this paper was conducted with the support of NSF grant #G23990? for investigation of authority...

  14. RESIDENTIAL VENTILATION AND ENERGY CHARACTERISTICS*

    E-Print Network [OSTI]

    best available data, the energy liability as- sociated with providing the current levels of ventilationRESIDENTIAL VENTILATION AND ENERGY CHARACTERISTICS* Max Sherman Nance Matson Energy Performance of Buildings Group Energy and Environment Division Lawrence Berkeley Laboratory University of California

  15. GENERALIZED ORBIFOLD EULER CHARACTERISTIC OF ...

    E-Print Network [OSTI]

    1910-01-10

    orbifold Euler characteristic is always an integer, since (1-1) implies ?orb(M; G) = ...... by (h,t) permutes mr(c) elements {(?r,c,i,?r,c,i)}i for each [c] ? G? and r ? 1.

  16. Physically Gelled Room-Temperature Ionic Liquid-Based Composite Membranes for CO2/N-2 Separation: Effect of Composition and Thickness on Membrane Properties and Performance

    SciTech Connect (OSTI)

    Nguyen, PT; Voss, BA; Wiesenauer, EF; Gin, DL; Nobe, RD

    2013-07-03

    An aspartame-based, low molecular-weight organic gelator (LMOG) was used to form melt-infused and composite membranes with two different imidazolium-based room-temperature ionic liquids (RTILs) for CO2 separation from N-2. Previous work demonstrated that LMOGs can gel RTILs at low, loading levels, and this aspartame-based LMOG was selected because it has been reported to gel a large number of RTILs. The imidazolium-based RTILs were used because of their inherent good properties for CO2/light gas separations. Analysis of the resulting bulk RTIL/LMOG physical gels showed that these materials have high sol-gel transition temperatures (ca. 135 degrees C) suitable for flue gas applications. Gas permeabilities and burst pressure measurements of thick, melt infused membranes revealed a trade-off between high CO2 permeabilities and good mechanical stability as a function of the LMOG loading. Defect-free, composite membranes of the gelled RTILs were successfully fabricated by choosing an appropriate porous membrane support (hydrophobic PTFE) using a suitable coating technique (roller coating). The thicknesses of the applied composite gel layers ranged from 10.3 to 20.7 mu m, which represents an order of magnitude decrease in active layer thickness, compared to the original melt-infused gel RTIL membranes.

  17. Auxiliary Ligand-Dependent Assembly of Several Ni/Ni-Cd Compounds with N2O2 Donor Tetradentate Symmetrical Schiff Base Ligand

    SciTech Connect (OSTI)

    Ge, Ying Ying; Li, Guo-Bi; Fang, Hua-Cai; Zhan, Xu Lin; Gu, Zhi-Gang; Chen, Jin Hao; Sun, Feng; Cai, Yue-Peng; Thallapally, Praveen K.

    2010-09-18

    Several low-dimensional Ni/Ni-Cd complexes containing N2O2 donor tetradentate symmetrical Schiff base ligand bis(acetylacetone)ethylene-diamine (sy-H2L2), namely, [Ni(sy-L2)]2?HLa?ClO4 (2), (HLa)2?(ClO4)?(NO3) (3), [Ni(sy-L2)X]2](4,4-bipy) (where La = 5,7-dimethyl-3,6-dihydro-2H-1,4-diazepine, X = ClO4 (4), X=NO3 (5), [Ni(sy-L2)Cd(SCN)2]n (6) and [Ni(sy-L2)?Cd(N3)2]n (7) have been synthesized from [Ni(sy-L2)]2?H2O (1). Complex 2, is three component discrete assembly generated from (HLa)+ moiety bridged with [Ni(sy-L2)] unit and ClO4- anion. A solution containing complex 2 and Cd(NO3)2 results in a mixture of 1 and 3. Further re-crystallization of 1 and 3 with various auxiliary ligands, provides coordination complexes 4 7 stabilized by weak hydrogen bonds in which 6 and 7 represent the first 1D heteronuclear complexes based on symmetric acacen-base Schiff base ligand.

  18. Transpiring purging access probe for particulate laden or hazardous environments

    DOE Patents [OSTI]

    VanOsdol, John G

    2013-12-03

    An access probe for remote-sensing access through a viewing port, viewing volume, and access port into a vessel. The physical boundary around the viewing volume is partially formed by a porous sleeve lying between the viewing volume and a fluid conduit. In a first mode of operation, a fluid supplied to the fluid conduit encounters the porous sleeve and flows through the porous material to maintain the viewing volume free of ash or other matter. When additional fluid force is needed to clear the viewing volume, the pressure of the fluid flow is increased sufficiently to slidably translate the porous sleeve, greatly increasing the flow into the viewing volume. The porous sleeve is returned to position by an actuating spring. The access probe thereby provides for alternate modes of operation based on the pressure of an actuating fluid.

  19. Solar panel driven air purging apparatus for motor vehicles

    SciTech Connect (OSTI)

    Bobier, J.A.; Brown, G.E.

    1992-02-18

    This patent describes improvement in a motor vehicle having an enclosable cabin an internal combustion engine, a battery, an ignition switch having an on position for enabling the internal combustion engine and an off position, an electric motor coupled in driving relationship with an air circulating fan for circulating air through the cabin. The improvement comprises: a solar panel mounted upon the vehicle having a panel output exhibiting variable voltage levels including a peak voltage level and substantially constant current; a power transfer regulator for transferring power form the panel to the motor when enabled, including: energy storage means connectable across the panel output and chargeable by the current to variable charge levels; solid-state switch means connected in energy transfer relationship with the energy storage means and actuable between conducting and non-conducting states when the power transfer regulator is enabled; inductor means connected with the solid-state switch means and connectable with the electric motor for conveying current thereto from the panel and the energy storage means when the solid-state switch means is in the conducting state.

  20. [FIXED] JGI data loss in /projectb/sandbox area [purge]

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust,Field-effectWorkingLos Alamos verifies largestnamedGroup! ! NUG 2014!EVALUATION OFJGI data

  1. System Design - Lessons Learned, Generic Concepts, Characteristics...

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

    Design - Lessons Learned, Generic Concepts, Characteristics & Impacts System Design - Lessons Learned, Generic Concepts, Characteristics & Impacts Presented at the DOE-DOD...

  2. Health Care Buildings : Basic Characteristics Tables

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

    Basic Characteristics Tables Buildings and Size Data by Basic Characteristics for Health Care Buildings Number of Buildings (thousand) Percent of Buildings Floorspace (million...

  3. Persistence Characteristics of Stormwater BMPs

    E-Print Network [OSTI]

    Quantity Characteristics Base flow Median flow Dominant discharge Variability Memory #12;5 Water Quality 16 #12;Dry vs Wet Weather Water Quality (TON, Fecal Coli) Scatterplot of paired Fecal Coliform;21 Representation of Time Series Data Raw Data (table or file) Time series plot Simple statistics Cumulative

  4. BELLCOMM, INC. GEOLOGIC CHARACTERISTICS OF

    E-Print Network [OSTI]

    Rathbun, Julie A.

    . . . . . . . . 4 2. LITTROW AREA. . . . . 9 3. ABULFEDA (CRATER CHAIN). . 13 4. HYGINUS CRATER AND RILLE of the Characteristics . Mobility Requirements . Expected Achievements . Conclusions. . 50 · 51 · 52 · 54 · 59 . . . 60 Landing Site for Hyginus Crater and Rille. . . . . . . Proposed Landing Site in the Littrow Area 12

  5. components of the droplet stream in the first regime before,during, and after the impact. The energy audit shows thatthe change in trandiameter dropllo theleiee smpo ohat modes (i.e. n [ 2) decay quickly, leaving the dominant

    E-Print Network [OSTI]

    Jones, Thomas B.

    . The energy audit shows thatthe change in trandiameter dropllo theleiee smpo ohat #12;#12;modes (i.e. n [ 2 (Rayleigh 1945). Often, rotation is observed in rebounding droplets. The downstream velocity and reflection in #12;interference between the incoming and outgoing streams after they rebound; something that might

  6. L I B R A R Y B U S I N E S S P L A N 2 0 1 4 The Library supports the University's goals of excellence in research, excellence in education and contribution

    E-Print Network [OSTI]

    All pcs in library public spaces replaced 2 Respond more effectively to student needs through1 | L I B R A R Y B U S I N E S S P L A N 2 0 1 4 Context The Library supports the University. The University library provides a collection, library services, digital literacy and research skills, the ANU

  7. TiO2 Nanotube Arrays Annealed in N2 for Efficient Lithium-Ion Intercalation Dawei Liu, Peng Xiao,, Yunhuai Zhang,, Betzaida B. Garcia, Qifeng Zhang, Qing Guo,|

    E-Print Network [OSTI]

    Cao, Guozhong

    TiO2 Nanotube Arrays Annealed in N2 for Efficient Lithium-Ion Intercalation Dawei Liu, Peng Xiao capacity and improved cyclic stability. TiO2 nanotube arrays annealed at 300 C exhibited the best lithium capacity decreased, but the cyclic stability improved; 400 C annealed TiO2 nanotube arrays possessed

  8. LIGHT EMITTING DIODE CHARACTERISTICS (SAMPLE LAB WRITEUP)

    E-Print Network [OSTI]

    McNeill, John A.

    1 LIGHT EMITTING DIODE CHARACTERISTICS (SAMPLE LAB WRITEUP) John A. McNeill ECE Box 000 January 19, 1997 ABSTRACT This lab investigates the V-I characteristic of a light-emitting diode (LED

  9. Characteristic hypersurfaces in a relativistic superfluid theory

    E-Print Network [OSTI]

    B. Linet

    1998-12-16

    By discussing the Cauchy problem, we determine the covariant equation of the characteristic hypersurfaces in a relativistic superfluid theory.

  10. Tier identification (TID) for tiered memory characteristics

    DOE Patents [OSTI]

    Chang, Jichuan; Lim, Kevin T; Ranganathan, Parthasarathy

    2014-03-25

    A tier identification (TID) is to indicate a characteristic of a memory region associated with a virtual address in a tiered memory system. A thread may be serviced according to a first path based on the TID indicating a first characteristic. The thread may be serviced according to a second path based on the TID indicating a second characteristic.

  11. Doppler characteristics of sea clutter.

    SciTech Connect (OSTI)

    Raynal, Ann Marie; Doerry, Armin Walter

    2010-06-01

    Doppler radars can distinguish targets from clutter if the target's velocity along the radar line of sight is beyond that of the clutter. Some targets of interest may have a Doppler shift similar to that of clutter. The nature of sea clutter is different in the clutter and exo-clutter regions. This behavior requires special consideration regarding where a radar can expect to find sea-clutter returns in Doppler space and what detection algorithms are most appropriate to help mitigate false alarms and increase probability of detection of a target. This paper studies the existing state-of-the-art in the understanding of Doppler characteristics of sea clutter and scattering from the ocean to better understand the design and performance choices of a radar in differentiating targets from clutter under prevailing sea conditions.

  12. Eliminating the Effects of a Status Characteristic

    E-Print Network [OSTI]

    Freese, Lee; Cohen, Bernard P

    2015-08-12

    ), and from the aggregation function proposed in the developing theory of status characteristics and expectation states (Berger et al. 1974; 1977)....

  13. NQA-1 Commercial Grade Dedication Critical Characteristics |...

    Office of Environmental Management (EM)

    Dedication Critical Characteristics May 5, 2015 Presenter: Randy P. Lanham, PE, CSP, Fire Protection Chief Engineer Consolidated Nuclear Solutions - Pantex, LLC Topics Covered:...

  14. Aerodynamic characteristics of seven symmetrical airfoil sections...

    Office of Scientific and Technical Information (OSTI)

    180-degree angle of attack for use in aerodynamic analysis of vertical axis wind turbines Citation Details In-Document Search Title: Aerodynamic characteristics of seven...

  15. DERIVATION OF STOCHASTIC ACCELERATION MODEL CHARACTERISTICS FOR...

    Office of Scientific and Technical Information (OSTI)

    DERIVATION OF STOCHASTIC ACCELERATION MODEL CHARACTERISTICS FOR SOLAR FLARES FROM RHESSI HARD X-RAY OBSERVATIONS Citation Details In-Document Search Title: DERIVATION OF STOCHASTIC...

  16. Regional characteristics, tilt domains, and extensional history...

    Open Energy Info (EERE)

    Report Number 303 DOI Not Provided Check for DOI availability: http:crossref.org Online Internet link for Regional characteristics, tilt domains, and extensional history of the...

  17. COMPUTING CHARACTERISTIC CLASSES OF PROJECTIVE PAOLO ALUFFI

    E-Print Network [OSTI]

    COMPUTING CHARACTERISTIC CLASSES OF PROJECTIVE SCHEMES PAOLO ALUFFI Abstract. We discuss an algorithm computing the push-forward to projective space of several classes associated to a (possibly computing, among other things, the topological Euler characteristic of the support of a projective scheme

  18. Changes in precipitation characteristics and extremes

    E-Print Network [OSTI]

    Allan, Richard P.

    Changes in precipitation characteristics and extremes Comparing Mediterranean to change Swiss characteristics Comparing Mediterranean to north-western European precipitation Master Thesis April 2012 Author precipitation 502) dvogel@student.ethz.ch Dr Richard Allan (University of Reading) Prof Dr Martin Wild (ETH

  19. Chemical and Physical Characteristics of Diesel Aerosol | Department...

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

    and Physical Characteristics of Diesel Aerosol Chemical and Physical Characteristics of Diesel Aerosol 2002 DEER Conference Presentation: University of Minnesota...

  20. Multispectrum measurements of spectral line parameters including temperature dependences of N2- and self-broadened half-width coefficients in the region of the v9 band of 12C2H6

    SciTech Connect (OSTI)

    Malathy Devi, V.; Benner, D. C.; Rinsland, C.P.; Smith, M.A.H.; Sams, Robert L.; Blake, Thomas A.; Flaud, Jean Marie; Sung, Keeyoon; Brown, L.R.; Mantz, A. W.

    2010-11-01

    Ethane is a prominent contributor to the spectrum of Titan, particularly in the region of the v9 band at 12?m. A multispectrum nonlinear least squares fitting program was applied to laboratory spectra of ethane to measure accurate positions, absolute intensities, N2- and selfbroadened half- width coefficients and their temperature dependences for a large number transitions. These measurements include several pQ and rQ sub-bands (and other sub-bands such as pP, rR) in the v9 fundamental band of 12C2H6 centered near 822 cm-1. Positions were measured for 2958 transitions and intensities for 3771 transitions. N2- and self-broadened half-width coefficients were determined for over 1700 transitions while temperature dependence exponents were retrieved for over 1350 of those transitions. Of these, many measurements (mostly line positions and intensities) belong to the v9+v4-v4 hot band, v9+2v4-2v4 hot band, 13C12CH6 v9 band and unidentified transitions. Forty-three high resolution (0.0016-0.005 cm-1) infrared laboratory absorption spectra recorded at temperatures between 148 and 298 K were fitted simultaneously to retrieve these parameters. Forty-one of these spectra were obtained in the temperature range of 211-298 K using the Bruker IFS 120HR interferometer located at the Pacific Northwest National Laboratory (PNNL) in Richland, Washington. Two additional spectra at 148 K were recorded using a new temperature stabilized cryogenic cell designed to work inside the sample compartment of the high resolution Bruker IFS 125HR interferometer of the Jet Propulsion Laboratory (JPL) in Pasadena California. The specialized cooling cell developed at Connecticut College and capable of achieving gas sample temperatures down to 70 K with a temperature stability and uniformity of better than 0.05 K was employed to record the 148 K spectra. Constraints to intensity ratios, doublet separations, half-width coefficients and their temperature dependence exponents were required to determine these parameters for each of the two torsional split components. Similar to N2- and self-broadened half-width coefficients, their temperature dependence exponents were also found to follow distinctively different patterns. The variations of the observed half-width coefficients and their temperature dependences with respect to J, K quantum numbers are discussed. Because of the high density of torsionally split spectral lines, hot-band ransitions as well as blends, it was not possible to retrieve any information on the small pressure-induced shift coefficients. Present results are compared to other available measurements.

  1. A Hydrogen-Evolving Ni(P2N2)2 Electrocatalyst Covalently Attached to a Glassy Carbon Electrode: Preparation, Characterization, and Catalysis. Comparisons With the Homogeneous Analog

    SciTech Connect (OSTI)

    Das, Atanu K.; Engelhard, Mark H.; Bullock, R. Morris; Roberts, John A.

    2014-07-07

    A hydrogen-evolving homogeneous Ni(P2N2)2 electrocatalyst with peripheral ester groups has been covalently attached to a 1,2,3-triazolyllithium-terminated glassy carbon electrode. The surface-confined complex is an electroctalyst for hydrogen evolution, showing onset of catalytic current at the same potential as the soluble parent complex. X-ray photoemission spectra show excellent agreement between the coupled and homogeneous species. Coverage approaches a dense monolayer. This research was supported as part of the Center for Molecular Electrocatalysis, an Energy Frontier Research Center funded by the US Department of Energy, Office of Science, Office of Basic Energy Sciences. Pacific Northwest National Laboratory is operated by Battelle for the US Department of Energy. The XPS measurements were performed at EMSL, a national scientific user facility sponsored by the Department of Energy's Office of Biological and Environmental Research and located at Pacific Northwest National Laboratory.

  2. Frelsning 12 O(n2)-algoritmer

    E-Print Network [OSTI]

    passar bra i olika sammanhang. Ingen enskild algoritm r bst i alla mjliga situtioner. PFK (Frelsning

  3. N2Solar | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoop Inc Jump to: navigation,Mereg GmbHMontebalitoMtMxEnergy

  4. Market characteristics of future oil tanker operations

    E-Print Network [OSTI]

    Willemann, Simmy Dhawan

    2014-01-01

    This work analyzes the market characteristics of future oil tanker operations with a particular emphasis on those aspects which will have a potential impact on the design of future vessels. The market analysis model used ...

  5. Future characteristics of Offshore Support Vessels

    E-Print Network [OSTI]

    Rose, Robin Sebastian Koske

    2011-01-01

    The objective of this thesis is to examine trends in Offshore Support Vessel (OSV) design and determine the future characteristics of OSVs based on industry insight and supply chain models. Specifically, this thesis focuses ...

  6. 1997 Housing Characteristics Tables Housing Unit Tables

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

    1997 Housing Unit Characteristics RSE Column Factor: Total 1997 Household Income Below Poverty Line Eli- gible for Fed- eral Assist- ance 1 RSE Row Factors Less than 10,000...

  7. Contractual form, retail price and asset characteristics

    E-Print Network [OSTI]

    Shepard, Andrea

    1991-01-01

    Predictions derived from a principal-agent analysis of the manufacturer-retailer relationship are derived and tested using microdata on contractual form, outlet characteristics and retail prices for gasoline stations in ...

  8. Total lightning characteristics of ordinary convection

    E-Print Network [OSTI]

    Motley, Shane Michael

    2009-06-02

    Twenty-two isolated, non-severe, warm season thunderstorms (ordinary thunderstorms) were examined to test possible correlations between three-dimensional lightning flash characteristics and the complex evolution of the ...

  9. Measuring value added characteristics in feeder cattle

    E-Print Network [OSTI]

    Mathews, Crystal Dawn

    2009-05-15

    VALUE-ADDED CHARACTERISTICS IN FEEDER CATTLE A Thesis by CRYSTAL DAWN MATHEWS Submitted 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 2007 Major Subject: Agricultural Economics MEASURING VALUE-ADDED CHARACTERISTICS IN FEEDER CATTLE A Thesis by CRYSTAL DAWN MATHEWS Submitted to the Office of Graduate Studies of Texas A&M University...

  10. Detailed Assessment of Particulate Characteristics from Low-Temperatur...

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

    Assessment of Particulate Characteristics from Low-Temperature Combustion Engines Detailed Assessment of Particulate Characteristics from Low-Temperature Combustion Engines 2012...

  11. Experimental and Modeling Studies of the Characteristics of Liquid...

    Energy Savers [EERE]

    Experimental and Modeling Studies of the Characteristics of Liquid Biofuels for Enhanced Combustion Experimental and Modeling Studies of the Characteristics of Liquid Biofuels for...

  12. Characteristics of seismic waves from Soviet peaceful nuclear...

    Office of Scientific and Technical Information (OSTI)

    Technical Report: Characteristics of seismic waves from Soviet peaceful nuclear explosions in salt Citation Details In-Document Search Title: Characteristics of seismic waves from...

  13. An Experimental Study of PM Emission Characteristics of Commercial...

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

    An Experimental Study of PM Emission Characteristics of Commercial Diesel Engine with Urea-SCR System An Experimental Study of PM Emission Characteristics of Commercial Diesel...

  14. Discovery and characteristics of the rapidly rotating active...

    Office of Scientific and Technical Information (OSTI)

    Discovery and characteristics of the rapidly rotating active asteroid (62412) 2000 SY178 in the main belt Citation Details In-Document Search Title: Discovery and characteristics...

  15. Oxidation characteristics of gasoline direct-injection (GDI)...

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

    characteristics of gasoline direct-injection (GDI) engine soot: Catalytic effects of ash and modified kinetic correlation Title Oxidation characteristics of gasoline...

  16. Analysis of engineering management characteristics employed in the defense industry

    E-Print Network [OSTI]

    Gutirrez, Sara S. (Sara Sofia Gutirrez Cervantes)

    2009-01-01

    An analysis of the engineering management characteristics present in companies in the defense industry was performed. These aspects include the organization characteristics of structure, hierarchy, and standards and ...

  17. Measurements of Smoke Characteristics in HVAC Ducts

    E-Print Network [OSTI]

    Wolin, Steven D; Ryder, Noah L; Leprince, Frederic; Milke, James; Mowrer, Frederick; Torero, Jose L

    2001-01-01

    The characteristics of smoke traveling in an HVAC duct have been observed along with the response of selected duct smoke detectors. The simulated HVAC system consists of a 9 m long duct, 0.45 m in diameter. An exhaust fan is placed at one end...

  18. Communication Characteristics in the NAS Parallel Benchmarks

    E-Print Network [OSTI]

    Communication Characteristics in the NAS Parallel Benchmarks Ahmad Faraj Xin Yuan Department-- In this paper, we investigate the communication characteris- tics of the Message Passing Interface (MPI) implementation of the NAS parallel benchmarks and study the effectiveness of com- piled communication for MPI

  19. Understanding Data Center Traffic Characteristics Theophilus Benson

    E-Print Network [OSTI]

    Badrinath, B. R.

    Understanding Data Center Traffic Characteristics Theophilus Benson , Ashok Anand , Aditya Akella and Ming Zhang UW-Madison, Microsoft Research ABSTRACT As data centers become more and more central patterns in data center networks that can inform and help evaluate research and operational approaches. We

  20. Superconducting wire with improved strain characteristics

    DOE Patents [OSTI]

    Luhman, Thomas (Westhampton Beach, NY); Klamut, Carl J. (E. Patchogue, NY); Suenaga, Masaki (Bellport, NY); Welch, David (Stony Brook, NY)

    1982-01-01

    A superconducting wire comprising a superconducting filament and a beryllium strengthened bronze matrix in which the addition of beryllium to the matrix permits a low volume matrix to exhibit reduced elastic deformation after heat treating which increases the compression of the superconducting filament on cooling and thereby improves the strain characteristics of the wire.

  1. Superconducting wire with improved strain characteristics

    DOE Patents [OSTI]

    Luhman, Thomas (Westhampton Beach, NY); Klamut, Carl J. (East Patchogue, NY); Suenaga, Masaki (Bellport, NY); Welch, David (Stony Brook, NY)

    1982-01-01

    A superconducting wire comprising a superconducting filament and a beryllium strengthened bronze matrix in which the addition of beryllium to the matrix permits a low volume matrix to exhibit reduced elastic deformation after heat treating which increases the compression of the superconducting filament on cooling and thereby improve the strain characteristics of the wire.

  2. PressurePressure Indiana Coal Characteristics

    E-Print Network [OSTI]

    Fernndez-Juricic, Esteban

    TimeTime PressurePressure Indiana Coal Characteristics Indiana Coals for Coke Coal Indiana Total Consumption Electricity 59,664 Coke 4,716 Industrial 3,493 Major Coal- red power plantsTransportation in Indiana Coal Slurry Ponds Evaluation Site Selection for Coal Gasification Coal-To-Liquids Study, CTL

  3. Painting surface characteristics Pierre Poulin Alain Fournier

    E-Print Network [OSTI]

    Montral, Universit de

    Painting surface characteristics Pierre Poulin Alain Fournier Dept. I.R.O. Dept. of Computer a painting paradigm. An interactive system is provided where the user simply applies color points the surface parameters by simply painting color points on a surface. Each color point is governed

  4. Forward and reverse characteristics of irradiated MOSFETs

    SciTech Connect (OSTI)

    Paccagnella, A.; Ceschia, M.; Verzellesi, G.; Dalla Betta, G.F.; Soncini, G.; Bellutti, P.; Fuochi, P.G.

    1996-06-01

    pMOSFETs biased with V{sub gs} < V{sub gd} during Co{sup 60} {gamma} irradiation have shown substantial differences between the forward and reverse subthreshold characteristics, induced by a non-uniform charge distribution in the gate oxide. Correspondingly, modest differences have been observed in the over-threshold I-V characteristics. After irradiation, the forward subthreshold curves can shift at higher or lower gate voltages than the reverse ones. The former behavior has been observed in long-channel devices, in agreement with the classical MOS theory and numerical simulations. The latter result has been obtained in short-channel devices, and it has been correlated to a parasitic punch-through conduction mechanism.

  5. Measuring spatial variability in soil characteristics

    DOE Patents [OSTI]

    Hoskinson, Reed L. (Rigby, ID); Svoboda, John M. (Idaho Falls, ID); Sawyer, J. Wayne (Hampton, VA); Hess, John R. (Ashton, ID); Hess, J. Richard (Idaho Falls, ID)

    2002-01-01

    The present invention provides systems and methods for measuring a load force associated with pulling a farm implement through soil that is used to generate a spatially variable map that represents the spatial variability of the physical characteristics of the soil. An instrumented hitch pin configured to measure a load force is provided that measures the load force generated by a farm implement when the farm implement is connected with a tractor and pulled through or across soil. Each time a load force is measured, a global positioning system identifies the location of the measurement. This data is stored and analyzed to generate a spatially variable map of the soil. This map is representative of the physical characteristics of the soil, which are inferred from the magnitude of the load force.

  6. Quality characteristics of young bovine carcasses

    E-Print Network [OSTI]

    Bellinger, John Wayne

    1978-01-01

    ) May 1978 442834 1 1. 1 ABSTRACT Quality Characteristics of Young Bovine Carcasses. (May 1978) John Wayne Bellinger B. S. , Texas A&M University Co-Chairmen of Advisory Committee: Dr. G C. Smith Dr Z. L. Carpenter A total of 305 carcasses... longissimus muscle steaks. ACKNOWLEDGMENTS The author greatly appreciates the encouragement and inspiration given by Drs. G. C. Smith and Z. L. Carpenter throughout his coursework and research. Their guidance and suggestions will always be remembered...

  7. TCO (n=2, k=0), 80 nm TCO (n=2, k=0), 80 nm

    E-Print Network [OSTI]

    between non-radiative recombination and light trapping in crystalline silicon p-n junctions. We adopt the scientific and PV industrial communities with the common aim of developing thin and cheap devices, while

  8. Aerosol collection characteristics of ambient aerosol samplers

    E-Print Network [OSTI]

    Ortiz, Carlos A

    1978-01-01

    when the sampler is not in operation, both as functions of particle size and wind speed. Wind velocity was a major cause of bias for the four samplers when collecting aerosol particles & 10 um. Characteristic curves were very similar for the 0. 38 m... x 0. 38 m ( 15" x 15") Hi-Vol and the 0. 29 m x 0. 36 m (11&" x 14") Hi-Vol. At 28 um and wind speeds of 2, 8, and 24 km/hr, sampling effectiveness values respectively were 70, 43, and 43 percent for the 0. 38 m x 0. 38 m Hi-Vol and 81, 56, and 43...

  9. Coal-water slurry atomization characteristics

    SciTech Connect (OSTI)

    Caton, J.A.; Kihm, K.D.

    1994-04-01

    The overall objective of this work was to fully characterize the CWS fuel sprays of a medium-speed diesel engine injection system. Specifically, the spray plume penetration as a function of time was determined for a positive-displacement fuel injection system. The penetration was determined as a function of orifice diameter, coal loading, gas density in the engine, and fuel line pressure. Preliminary droplet information also was obtained. The results of this study will assist CWS engine development by providing much needed insight about the fuel spray. In addition, the results will aid the development and use of CWS engine cycle simulations which require information on the fuel spray characteristics.

  10. Overview of Commercial Buildings, 2003 - Major Characteristics

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home PageMonthly","10/2015"4,"Ames5 Tables July 1996 Energy Information Administration Office of Coal, Nuclear,DecadeYear JanNewMajor Characteristics of All Commercial Buildings

  11. Performance Characteristics of Coal-to-Liquids (CTL) Diesel in...

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

    Characteristics of Coal-to-Liquids (CTL) Diesel in a 50-State Emissions Compliant Passenger Car Performance Characteristics of Coal-to-Liquids (CTL) Diesel in a 50-State Emissions...

  12. Fact #800: October 21, 2013 Characteristics of New Light Vehicles...

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

    0: October 21, 2013 Characteristics of New Light Vehicles over Time Fact 800: October 21, 2013 Characteristics of New Light Vehicles over Time From model years 1980 to 2012, there...

  13. Utilizing flow characteristics to increase performance in swimming

    E-Print Network [OSTI]

    Machtsiras, Georgios

    2013-07-05

    Performance when gliding in the streamlined position depends on a swimmers morphological characteristics, body orientation and water characteristics. The purpose of this thesis was twofold. First to identify and assess ...

  14. Soil Hydraulic Characteristics of a Small Southwest Oregon Watershed Following

    E-Print Network [OSTI]

    --------------------------------------------- Soil Hydraulic Characteristics of a Small Southwest by a high-intensity burn over areas of steep topography. The areal distribution of soil hydraulic of infiltration capacity, saturated hydraulic conductivity, and soil moisture characteristics. Also, measures

  15. The Precipitation Characteristics of ISCCP Tropical Weather States DONGMIN LEE

    E-Print Network [OSTI]

    Kang, In-Sik

    The Precipitation Characteristics of ISCCP Tropical Weather States DONGMIN LEE GESTAR, University The authors examine the daytime precipitation characteristics of the International Satellite Cloud Climatology precipitation dataset used is the Tropical Rainfall Measuring Mission (TRMM) Multisatellite Precipitation

  16. Ris-R-1472(EN) Database on Wind Characteristics

    E-Print Network [OSTI]

    Ris-R-1472(EN) Database on Wind Characteristics Contents of Database Bank, revision I Gunner C on Wind Characteristics Contents of the database, revision I Abstract The main objective of IEA R&D Wind Annex XVII - Database on Wind Characteristics - has been to provide wind energy planners, designers

  17. Ris-R-1473(EN) Database on Wind Characteristics

    E-Print Network [OSTI]

    Ris-R-1473(EN) Database on Wind Characteristics Analyses of Wind Turbine Design Loads Gunner C R&D Wind Annex XVII - Database on Wind #12;IEA Annex XVII, Database on Wind Characteristics Analyses of W Characteristics - has been to provide wind energy planners, designers and researchers, as well

  18. Ris-R-1301(EN) Database on Wind Characteristics

    E-Print Network [OSTI]

    Ris-R-1301(EN) Database on Wind Characteristics Contents of Database Bank Gunner C. Larsen Ris XVII, Database on Wind Characteristics - Contents of the database Abstract The main objective of IEA R&D Wind Annex XVII - Database on Wind Characteristics - is to provide wind energy planners and designers

  19. Characteristics of transverse waves in chromospheric mottles

    SciTech Connect (OSTI)

    Kuridze, D.; Mathioudakis, M.; Jess, D. B.; Keenan, F. P. [Astrophysics Research Center, School of Mathematics and Physics, Queen's University, Belfast BT7 1NN (United Kingdom); Verth, G.; Erdlyi, R. [Solar Physics and Space Plasma Research Center (SP2RC), University of Sheffield, Hicks Building, Hounsfield Road, Sheffield S3 7RH (United Kingdom); Morton, R. J. [Mathematics and Information Science, Northumbria University, Camden Street, Newcastle Upon Tyne NE1 8ST (United Kingdom); Christian, D. J., E-mail: dkuridze01@qub.ac.uk [Department of Physics and Astronomy, California State University, Northridge, CA 91330 (United States)

    2013-12-10

    Using data obtained by the high temporal and spatial resolution Rapid Oscillations in the Solar Atmosphere instrument on the Dunn Solar Telescope, we investigate at an unprecedented level of detail transverse oscillations in chromospheric fine structures near the solar disk center. The oscillations are interpreted in terms of propagating and standing magnetohydrodynamic kink waves. Wave characteristics including the maximum transverse velocity amplitude and the phase speed are measured as a function of distance along the structure's length. Solar magnetoseismology is applied to these measured parameters to obtain diagnostic information on key plasma parameters (e.g., magnetic field, density, temperature, flow speed) of these localized waveguides. The magnetic field strength of the mottle along the ?2 Mm length is found to decrease by a factor of 12, while the local plasma density scale height is ?280 80 km.

  20. Gas sensor with attenuated drift characteristic

    DOE Patents [OSTI]

    Chen, Ing-Shin (Danbury, CT) [Danbury, CT; Chen, Philip S. H. (Bethel, CT) [Bethel, CT; Neuner, Jeffrey W. (Bethel, CT) [Bethel, CT; Welch, James (Fairfield, CT) [Fairfield, CT; Hendrix, Bryan (Danbury, CT) [Danbury, CT; Dimeo, Jr., Frank [Danbury, CT

    2008-05-13

    A sensor with an attenuated drift characteristic, including a layer structure in which a sensing layer has a layer of diffusional barrier material on at least one of its faces. The sensor may for example be constituted as a hydrogen gas sensor including a palladium/yttrium layer structure formed on a micro-hotplate base, with a chromium barrier layer between the yttrium layer and the micro-hotplate, and with a tantalum barrier layer between the yttrium layer and an overlying palladium protective layer. The gas sensor is useful for detection of a target gas in environments susceptible to generation or incursion of such gas, and achieves substantial (e.g., >90%) reduction of signal drift from the gas sensor in extended operation, relative to a corresponding gas sensor lacking the diffusional barrier structure of the invention

  1. Droplet migration characteristics in confined oscillatory microflows

    E-Print Network [OSTI]

    Chaudhury, Kaustav; Chakraborty, Suman

    2015-01-01

    We analyze the migration characteristics of a droplet in an oscillatory flow field in a parallel plate micro-confinement. Using phase filed formalism, we capture the dynamical evolution of the droplet over a wide range of the frequency of the imposed oscillation in the flow field, drop size relative to the channel gap, and the capillary number. The latter two factors imply the contribution of droplet deformability, commonly considered in the study of droplet migration under steady shear flow conditions. We show that the imposed oscillation brings in additional time complexity in the droplet movement, realized through temporally varying drop-shape, flow direction and the inertial response of the droplet. As a consequence, we observe a spatially complicated pathway of the droplet along the transverse direction, in sharp contrast to the smooth migration under a similar yet steady shear flow condition. Intuitively, the longitudinal component of the droplet movement is in tandem with the flow continuity and evolve...

  2. S P R I N G C O N V O C AT I O N 2 0 1 4 S F U ' S V I S I O N | T H E E N G A G E D U N I V E R S I T Y

    E-Print Network [OSTI]

    S P R I N G C O N V O C AT I O N 2 0 1 4 #12;S F U ' S V I S I O N | T H E E N G A G E D U N I V E ..............................................................................................................2 P R E S I D E N T ' S W E L C O M E .................................................................................................................................................3 P A R T I C I P A N

  3. Leaching Characteristics of Hanford Ferrocyanide Wastes

    SciTech Connect (OSTI)

    Edwards, Matthew K.; Fiskum, Sandra K.; Peterson, Reid A.; Shimskey, Rick W.

    2009-12-21

    A series of leach tests were performed on actual Hanford Site tank wastes in support of the Hanford Tank Waste Treatment and Immobilization Plant (WTP). The samples were targeted composite slurries of high-level tank waste materials representing major complex, radioactive, tank waste mixtures at the Hanford Site. Using a filtration/leaching apparatus, sample solids were concentrated, caustic leached, and washed under conditions representative of those planned for the Pretreatment Facility in the WTP. Caustic leaching was performed to assess the mobilization of aluminum (as gibbsite, Al[OH]3, and boehmite AlO[OH]), phosphates [PO43-], chromium [Cr3+] and, to a lesser extent, oxalates [C2O42-]). Ferrocyanide waste released the solid phase 137Cs during caustic leaching; this was antithetical to the other Hanford waste types studied. Previous testing on ferrocyanide tank waste focused on the aging of the ferrocyanide salt complex and its thermal compatibilities with nitrites and nitrates. Few studies, however, examined cesium mobilization in the waste. Careful consideration should be given to the pretreatment of ferrocyanide wastes in light of this new observed behavior, given the fact that previous testing on simulants indicates a vastly different cesium mobility in this waste form. The discourse of this work will address the overall ferrocyanide leaching characteristics as well as the behavior of the 137Cs during leaching.

  4. Foaming characteristics of refigerant/lubricant mixtures

    SciTech Connect (OSTI)

    Goswami, D.Y.; Shah, D.O.; Jotshi, C.K.; Bhagwat, S.; Leung, M.; Gregory, A.

    1997-04-01

    The air-conditioning and refrigeration industry has moved to HFC refrigerants which have zero ozone depletion and low global warming potential due to regulations on CFC and HCFC refrigerants and concerns for the environment. The change in refrigerants has prompted the switch from mineral oil and alkylbenzene lubricants to polyolester-based lubricants. This change has also brought about a desire for lubricant, refrigerant and compressor manufacturers to understand the foaming properties of alternative refrigerant/ lubricant mixtures, as well as the mechanisms which affect these properties. The objectives of this investigation are to experimentally determine the foaming absorption and desorption rates of HFC and blended refrigerants in polyolester lubricant and to define the characteristics of the foam formed when the refrigerant leaves the refrigerant/ lubricant mixture after being exposed to a pressure drop. The refrigerants being examined include baseline refrigerants: CFC-12 (R-12) and HCFC-22 (R-22); alternative refrigerants: HFC-32 (R-32), R-125, R-134a, and R-143a; and blended refrigerants: R-404A, R-407C, and R-410A. The baseline refrigerants are tested with ISO 32 (Witco 3GS) and ISO 68 (4GS) mineral oils while the alternative and blended refrigerants are tested with two ISO 68 polyolesters (Witco SL68 and ICI RL68H).

  5. The Lyapunov Characteristic Exponents and their computation

    E-Print Network [OSTI]

    Charalampos Skokos

    2009-01-26

    We present a survey of the theory of the Lyapunov Characteristic Exponents (LCEs) for dynamical systems, as well as of the numerical techniques developed for the computation of the maximal, of few and of all of them. After some historical notes on the first attempts for the numerical evaluation of LCEs, we discuss in detail the multiplicative ergodic theorem of Oseledec \\cite{O_68}, which provides the theoretical basis for the computation of the LCEs. Then, we analyze the algorithm for the computation of the maximal LCE, whose value has been extensively used as an indicator of chaos, and the algorithm of the so--called `standard method', developed by Benettin et al. \\cite{BGGS_80b}, for the computation of many LCEs. We also consider different discrete and continuous methods for computing the LCEs based on the QR or the singular value decomposition techniques. Although, we are mainly interested in finite--dimensional conservative systems, i. e. autonomous Hamiltonian systems and symplectic maps, we also briefly refer to the evaluation of LCEs of dissipative systems and time series. The relation of two chaos detection techniques, namely the fast Lyapunov indicator (FLI) and the generalized alignment index (GALI), to the computation of the LCEs is also discussed.

  6. N-(N-[2-(3,5-Difluorophenyl)acetyl]-(S)-alanyl)-(S)-phenylglycine tert-butyl ester (DAPT): an inhibitor of ?-secretase, revealing fine electronic and hydrogen-bonding features

    SciTech Connect (OSTI)

    Czerwinski, Andrzej; Valenzuela, Francisco; Afonine, Pavel; Dauter, Miroslawa; Dauter, Zbigniew

    2010-12-01

    The title compound, C{sub 23}H{sub 26}F{sub 2}N{sub 2}O{sub 4}, is a dipeptidic inhibitor of ?-secretase, one of the enzymes involved in Alzheimers dis@@ease. The mol@@ecule adopts a compact conformation, without intra@@molecular hydrogen bonds. In the crystal structure, one of the amide N atoms forms the only inter@@molecular NH?O hydrogen bond; the second amide N atom does not form hydrogen bonds. High-resolution synchrotron diffraction data permitted the unequivocal location and refinement without restraints of all H atoms, and the identification of the characteristic shift of the amide H atom engaged in the hydrogen bond from its ideal position, resulting in a more linear hydrogen bond. Significant residual densities for bonding electrons were revealed after the usual SHELXL refinement, and modeling of these features as additional inter@@atomic scatterers (IAS) using the program PHENIX led to a significant decrease in the R factor from 0.0411 to 0.0325 and diminished the r.m.s. deviation level of noise in the final difference Fourier map from 0.063 to 0.037 e {sup ?3}.

  7. Sooting characteristics of surrogates for jet fuels

    SciTech Connect (OSTI)

    Mensch, Amy; Santoro, Robert J.; Litzinger, Thomas A. [Department of Mechanical and Nuclear Engineering, and The Propulsion Engineering Research Center, The Pennsylvania State University, University Park, PA 16802 (United States); Lee, S.-Y. [Department of Mechanical Engineering and Engineering Mechanics, Michigan Technological University, Houghton, MI 49931 (United States)

    2010-06-15

    Currently, modeling the combustion of aviation fuels, such as JP-8 and JetA, is not feasible due to the complexity and compositional variation of these practical fuels. Surrogate fuel mixtures, composed of a few pure hydrocarbon compounds, are a key step toward modeling the combustion of practical aviation fuels. For the surrogate to simulate the practical fuel, the composition must be designed to reproduce certain pre-designated chemical parameters such as sooting tendency, H/C ratio, autoignition, as well as physical parameters such as boiling range and density. In this study, we focused only on the sooting characteristics based on the Threshold Soot Index (TSI). New measurements of TSI values derived from the smoke point along with other sooting tendency data from the literature have been combined to develop a set of recommended TSI values for pure compounds used to make surrogate mixtures. When formulating the surrogate fuel mixtures, the TSI values of the components are used to predict the TSI of the mixture. To verify the empirical mixture rule for TSI, the TSI values of several binary mixtures of candidate surrogate components were measured. Binary mixtures were also used to derive a TSI for iso-cetane, which had not previously been measured, and to verify the TSI for 1-methylnaphthalene, which had a low smoke point and large relative uncertainty as a pure compound. Lastly, surrogate mixtures containing three components were tested to see how well the measured TSI values matched the predicted values, and to demonstrate that a target value for TSI can be maintained using various components, while also holding the H/C ratio constant. (author)

  8. Check all SCHE Supply Purge Check Valves to Prevent Back Flow from SCHE into Helium Supply

    SciTech Connect (OSTI)

    MISKA, C.R.

    2000-10-23

    These valves are 1/2-inch check valves used to prevent SCHe backflow into the Helium System if pressure in the Helium System drops below the pressure of the control valve downstream of the SCHe supply bottles. (14 psig in trains A and B and 2 psig in trains C and D).

  9. Industrial structures : an analysis and transformation of their formal characteristics

    E-Print Network [OSTI]

    Strub, Damon

    1988-01-01

    Industrial structures such as blast furnaces, oil refineries, gravel crushers etc. are often beautiful and fascinating. Furthermore, they exemplify certain formal and organizational characteristics which could be incorporated ...

  10. Measurement Of Gas Electron Multiplier (GEM) Detector Characteristics...

    Office of Scientific and Technical Information (OSTI)

    Measurement Of Gas Electron Multiplier (GEM) Detector Characteristics Citation Details In-Document Search Title: Measurement Of Gas Electron Multiplier (GEM) Detector...

  11. Role of borehole geophysics in defining the physical characteristics...

    Open Energy Info (EERE)

    Role of borehole geophysics in defining the physical characteristics of the Raft River geothermal reservoir, Idaho Jump to: navigation, search OpenEI Reference LibraryAdd to...

  12. Chemical and isotopic characteristics of the coso east flank...

    Open Energy Info (EERE)

    Christenson, B. W.; Kennedy, B. M.; Adams, M. C.; Bjornstad, S. C.; Buck, C. . 182007. Chemical and isotopic characteristics of the coso east flank hydrothermal fluids:...

  13. Differences in the Physical Characteristics of Diesel PM with...

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

    Measure physical characteristics, carbon state, and surface bound oxygen of soot from biodiesel blends. deer08strzelec.pdf More Documents & Publications Non-Petroleum-Based Fuels:...

  14. Combined Field Integral Equation Based Theory of Characteristic Mode

    E-Print Network [OSTI]

    Qi I. Dai; Qin S. Liu; Hui Gan; Weng Cho Chew

    2015-03-04

    Conventional electric field integral equation based theory is susceptible to the spurious internal resonance problem when the characteristic modes of closed perfectly conducting objects are computed iteratively. In this paper, we present a combined field integral equation based theory to remove the difficulty of internal resonances in characteristic mode analysis. The electric and magnetic field integral operators are shown to share a common set of non-trivial characteristic pairs (values and modes), leading to a generalized eigenvalue problem which is immune to the internal resonance corruption. Numerical results are presented to validate the proposed formulation. This work may offer efficient solutions to characteristic mode analysis which involves electrically large closed surfaces.

  15. Chemical and light-stable isotope characteristics of waters from...

    Open Energy Info (EERE)

    Chemical and light-stable isotope characteristics of waters from the raft river geothermal area and environs, Cassia County, Idaho, Box Elder county, Utah Jump to: navigation,...

  16. Mechanical Characteristics of Composite Knitted Stents

    SciTech Connect (OSTI)

    Tokuda, Takanori, E-mail: tkdtknr@gmail.com; Shomura, Yuzo; Tanigawa, Noboru; Kariya, Shuji [Kansai Medical University Hirakata Hospital, Department of Radiology (Japan); Komemushi, Atsushi [Kansai Medical University Takii Hospital, Department of Radiology (Japan); Kojima, Hiroyuki; Sawada, Satoshi [Kansai Medical University Hirakata Hospital, Department of Radiology (Japan)

    2009-09-15

    We used metal wires and fibers to fabricate a composite knitted stent and then compare the mechanical characteristics of this stent with those of a pure metallic stent of the same construction in order to develop a stent that offers a comparable degree of expandability as metallic stents but can be used for highly curved lesions that cannot be treated using metallic stents. We fabricated two types of composite knitted stent (N-Z stents), using nitinol wire with a diameter of 0.12 mm and polypara-phenylene-benzobisoxazole (PBO) multifilament fiber (Zyron AS; Toyobo, Osaka, Japan). Stents were knitted into a cylindrical shape using the same textile pattern as a Strecker stent. Two loop lengths (L) of nitinol wire were used in the N-Z stents: L = 1.84 mm (N-Z stent L = 1.84) and L = 2.08 mm (N-Z stent L = 2.08). For the sake of comparison, we fabricated a metallic stent of nitinol using the same textile pattern (N-N stent L = 1.92). We applied a radial compression force diametrically to each stent and applied a bending force diametrically at the free end of a stent with one end fixed in order to evaluate the relationship between stent elasticity and load values. In addition, we macroscopically evaluated the generation of kinks when the stent was bent 180{sup o}. The radial compressive force when the stent diameter was reduced by 53% was 6.44 N in the case of N-Z stent L = 1.84, 6.14 N in the case of N-Z stent L = 2.08, and 4.96 N in the case of N-N stent L = 1.92 mm. The composite stent had a radial compressive force higher than that of a metallic stent. The restoring force to longitudinal direction at a 90{sup o} bending angle was 0.005 N for N-Z stent L = 1.84, 0.003 N for N-Z stent L = 2.08, and 0.034 N for N-N stent L = 1.92. The restoring force of the composite stent was significantly lower. Finally, the composite stent generated no definitive kinks at a bending angle of 180{sup o}, regardless of loop length. However, the N-N stent clearly produced kinks, causing blockage of the inner cavity. In conclusion, the use of a metal and fiber composite in the construction of a knitted stent ensures an expansion performance comparable to that of metallic stents, while providing better kink resistance.

  17. Predicting Panel Ratings for Semantic Characteristics of Lung Nodules

    E-Print Network [OSTI]

    Schaefer, Marcus

    Predicting Panel Ratings for Semantic Characteristics of Lung Nodules Dmitriy Zinovev De@cdm.depaul.edu ABSTRACT In reading CT scans with potentially malignant lung nodules, radiologists make use of high level a second opinion - predicting these semantic characteristics for lung nodules. In our previous work, we

  18. The social influence factor: Impact of online product review characteristics

    E-Print Network [OSTI]

    Al Hanbali, Ahmad

    The social influence factor: Impact of online product review characteristics on consumer purchasing of reviews and consumer purchasing decisions. The impact of online consumer reviews on consumer purchasing. The research challenge therefore entails review function characteristics and its impact on consumer purchasing

  19. Spectral characteristics of single and coupled microresonator lasers comprising a

    E-Print Network [OSTI]

    Cunningham, Brian

    Spectral characteristics of single and coupled microresonator lasers comprising a replica-molded introduced defect (2 section removed) have been examined with respect to the output spectrum, pump energy of intentionally introduced defects or coupled arrays of resonators to control the characteristics of microla- sers

  20. Best Entry Points for Structured Document Retrieval Part I: Characteristics

    E-Print Network [OSTI]

    Lalmas, Mounia

    Best Entry Points for Structured Document Retrieval Part I: Characteristics Jane Reida , Mounia documents. This paper examines the concept of best entry points, which are document components from which investigates the basic characteristics of best entry points. Keywords: Structured document retrieval, focussed

  1. The Nevada railroad system: Physical, operational, and accident characteristics

    SciTech Connect (OSTI)

    1991-09-01

    This report provides a description of the operational and physical characteristics of the Nevada railroad system. To understand the dynamics of the rail system, one must consider the system`s physical characteristics, routing, uses, interactions with other systems, and unique operational characteristics, if any. This report is presented in two parts. The first part is a narrative description of all mainlines and major branchlines of the Nevada railroad system. Each Nevada rail route is described, including the route`s physical characteristics, traffic type and volume, track conditions, and history. The second part of this study provides a more detailed analysis of Nevada railroad accident characteristics than was presented in the Preliminary Nevada Transportation Accident Characterization Study (DOE, 1990).

  2. The paths and characteristics of real estate entrepreneurs

    E-Print Network [OSTI]

    Kazmierski, Michael (Michael Anthony)

    2008-01-01

    What paths have real estate entrepreneurs taken to establish their own firm? Also, what characteristics did they develop and utilize in the process? This thesis gives the unique opportunity to better understand the life ...

  3. Capillary characteristics in microfluidic experiments and computational simulation

    E-Print Network [OSTI]

    Das, Anusuya

    2011-01-01

    Angiogenesis is crucial during many physiological processes, and is influenced by various biochemical and biomechanical factors. Models have proven useful in understanding the mechanisms of angiogenesis and the characteristics ...

  4. Characteristics of corn and sorghum for tortilla processing

    E-Print Network [OSTI]

    Gonzalez de Palacios, Maria de Jesus

    1980-01-01

    CHARACTERISTICS OF CORN AND SORGHUM FOR TORTILLA PROCESSING A Thesis by MARIA DE JESUS GONZALEZ DE PALACIOS Submitted to the Graduate College of Texas A8M University in partial fulfillment of the requirement for the degree of MASTER... OF SCIENCE December 1980 Major Subject: Food Science and Technology CHARACTERISTICS OF CORN AND SORGHUM FOR TORTILLA PROCESSING A Thesis by MARIA DE JESUS GONZALEZ DE PALACIOS Approved as to style and content by: an o omm t em er em er ea o...

  5. Psychological characteristics of elite and non-elite level gymnasts

    E-Print Network [OSTI]

    Waples, Steven Ballard

    2005-02-17

    -1 PSYCHOLOGICAL CHARACTERISTICS OF ELITE AND NON-ELITE LEVEL GYMNASTS A Record of Study by STEVEN B. WAPLES Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree... of DOCTOR OF EDUCATION December 2003 Major Subject: Physical Education PSYCHOLOGICAL CHARACTERISTICS OF ELITE AND NON-ELITE LEVEL GYMNASTS A Record of Study by STEVEN B. WAPLES Submitted to Texas A&M University...

  6. Characteristic impedances in output cylindrical coaxial cavity resonator of klystron

    SciTech Connect (OSTI)

    Dong, Yuhe [School of Science, Inner Mongolia University of Science and Technology, BaoTou, Inner Mongolia (China); Xie, Xingjuan; Huang, Chuanlu, E-mail: bentu1985@yahoo.com.cn [lnstitute of Electronics, Chinese Academy of Sciences, Beijing (China)

    2011-07-01

    Cylindrical coaxial cavity resonator with shift-tubes coupled with rectangular waveguide is designed. The gap characteristic impedance and external quality factor of higher order transverse magnetic mode TM{sub 310} in the cavity are simulated with high frequency electromagnetic simulator ISFEL-3D. The ununiformity of the characteristic impedance resulted from the coupling aperture is reduced through introduction of concave delves on peripheral wall of the cavity. (author)

  7. Retail Shelf-life Characteristics of Dry-aged Beef

    E-Print Network [OSTI]

    Ulbrich, Carson

    2010-07-14

    SCHOLAR A Senior Scholars Thesis by CARSON JOSEPH ULBRICH RETAIL SHELF-LIFE CHARACTERISTICS OF DRY-AGED BEEF Approved by: Research Advisors: Jeffrey W. Savell Davey B. Griffin Associate Dean for Undergraduate Research: Robert C. Webb... ULBRICH iii ABSTRACT Retail Shelf-Life Characteristics of Dry-Aged Beef. (April 2010) Carson Joseph Ulbrich Department of Animal Science Texas A&M University Research Advisors: Drs. Jeffrey W. Savell and Davey B. Griffin Department...

  8. Wave energy attenuation and shoreline alteration characteristics of submerged breakwaters

    E-Print Network [OSTI]

    Krafft, Katherine Margaret

    1993-01-01

    WAVE ENERGY ATTENUATION AND SHORELINE ALTERATION CHARACTERISTICS OF SUBMERGED BREAKWATERS A Thesis by KATHERINE MARGARET KRAFFT Submitted to the Office of Graduate Studies of Texas AIM University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE August 1993 Major Subject: Ocean Engineering WAVE ENERGY ATTENUATION AND SHORELINE ALTERATION CHARACTERISTICS OF SUBMERGED BREAKWATERS A Thesis by KATHERINE MARGARET KRAFFT Approved as to style and content by: John...

  9. Delineating the biosynthesis of gentamicin X2, the common precursor of the gentamicin C antibiotic complex.

    E-Print Network [OSTI]

    Huang, Chuan; Huang, Fanglu; Moison, Eileen; Guo, Junhong; Jian, Xinyun; Duan, Xiaobo; Deng, Zixin; Leadlay, Peter F.; Sun, Yuhui

    2015-01-29

    added at this point. Cells were harvested by centrifu- gation and resuspended in Binding Buffer (0.5 M NaCl, 20 mM Tris-HCl [pH 7.9]). The Binding Buffer for GenD1 resuspension was purged with N2 for at least 30 min before use. The recombinant protein...

  10. Measurement of physical characteristics of materials by ultrasonic methods

    DOE Patents [OSTI]

    Lu, W.Y.; Min, S.

    1998-09-08

    A method is described for determining and evaluating physical characteristics of a material. In particular, the present invention provides for determining and evaluating the anisotropic characteristics of materials, especially those resulting from such manufacturing processes as rolling, forming, extruding, drawing, forging, etc. In operation, a complex ultrasonic wave is created in the material of interest by any method. The wave form may be any combination of wave types and modes and is not limited to fundamental plate modes. The velocity of propagation of selected components which make up the complex ultrasonic wave are measured and evaluated to determine the physical characteristics of the material including, texture, strain/stress, grain size, crystal structure, etc. 14 figs.

  11. Measurement of physical characteristics of materials by ultrasonic methods

    DOE Patents [OSTI]

    Lu, Wei-yang (Pleasanton, CA); Min, Shermann (Livermore, CA)

    1998-01-01

    A method is described for determining and evaluating physical characteristics of a material. In particular, the present invention provides for determining and evaluating the anisotropic characteristics of materials, especially those resulting from such manufacturing processes as rolling, forming, extruding, drawing, forging, etc. In operation, a complex ultrasonic wave is created in the material of interest by any method. The wave form may be any combination of wave types and modes and is not limited to fundamental plate modes. The velocity of propagation of selected components which make up the complex ultrasonic wave are measured and evaluated to determine the physical characteristics of the material including, texture, strain/stress, grain size, crystal structure, etc.

  12. Optimization of distribution transformer efficiency characteristics. Final report, March 1979

    SciTech Connect (OSTI)

    Not Available

    1980-06-01

    A method for distribution transformer loss evaluation was derived. The total levalized annual cost method was used and was extended to account properly for conditions of energy cost inflation, peak load growth, and transformer changeout during the evaluation period. The loss costs included were the no-load and load power losses, no-load and load reactive losses, and the energy cost of regulation. The demand and energy components of loss costs were treated separately to account correctly for the diversity of load losses and energy cost inflation. The complete distribution transformer loss evaluation equation is shown, with the nomenclature and definitions for the parameters provided. Tasks described are entitled: Establish Loss Evaluation Techniques; Compile System Cost Parameters; Compile Load Parameters and Loading Policies; Develop Transformer Cost/Performance Relationship; Define Characteristics of Multiple Efficiency Transformer Package; Minimize Life Cycle Cost Based on Single Efficiency Characteristic Transformer Design; Minimize Life Cycle Cost Based on Multiple Efficiency Characteristic Transformer Design; and Interpretation.

  13. First Year Sedimentological Characteristics and Morphological Evolution of an Artificial Berm at Fort Myers Beach, Florida

    E-Print Network [OSTI]

    US Army Corps of Engineers

    First Year Sedimentological Characteristics and Morphological Evolution of an Artificial Berm Methods and Data Analysis 29 Results and Discussion 34 Sedimentological Characteristics of the Artificial Project Area 45 Control Area Northwest of Berm 47 Discussion of Sedimentological Characteristics 49

  14. Spectral Characteristic Evolution: A New Algorithm for Gravitational Wave Propagation

    E-Print Network [OSTI]

    Casey J. Handmer; Bla Szilgyi

    2014-09-24

    We present a spectral algorithm for solving the full nonlinear vacuum Einstein field equations in the Bondi framework. Developed within the Spectral Einstein Code (SpEC), we demonstrate spectral characteristic evolution as a technical precursor to Cauchy Characteristic Extraction (CCE), a rigorous method for obtaining gauge-invariant gravitational waveforms from existing and future astrophysical simulations. We demonstrate the new algorithm's stability, convergence, and agreement with existing evolution methods. We explain how an innovative spectral approach enables a two orders of magnitude improvement in computational efficiency.

  15. Materials Data on N2 (SG:194) by Materials Project

    SciTech Connect (OSTI)

    Kristin Persson

    2014-11-02

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

  16. Revue Europenne des Migrations Internationales Volume 8 n2,

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    enfants migrants se traitent d' arabe dans une classe primaire Pierre ACHARD, Gabrielle VARRO, Franois

  17. N=2 Supersymmetric Kinks and real algebraic curves

    E-Print Network [OSTI]

    A. Alonso Izquierdo; M. A. Gonzalez Leon; J. Mateos Guilarte

    2000-02-17

    The kinks of the (1+1)-dimensional Wess-Zumino model with polynomic superpotential are investigated and shown to be related to real algebraic curves.

  18. Theory of the n=2 levels in muonic deuterium

    E-Print Network [OSTI]

    Julian J. Krauth; Marc Diepold; Beatrice Franke; Aldo Antognini; Franz Kottmann; Randolf Pohl

    2015-06-08

    The present knowledge of Lamb shift, fine- and hyperfine structure of the $\\mathrm{2S}$ and $\\mathrm{2P}$ states in muonic deuterium is reviewed in anticipation of the results of a first measurement of several $\\mathrm{2S-2P}$ transition frequencies in muonic deuterium ($\\mu\\mathrm{d}$). A term-by-term comparison of all available sources reveals reliable values and uncertainties of the QED and nuclear structure-dependent contributions to the Lamb shift, which are essential for a determination of the deuteron rms charge radius from $\\mu\\mathrm{d}$. Apparent discrepancies between different sources are resolved, in particular for the difficult two-photon exchange contributions. Problematic single-sourced terms are identified which require independent recalculation.

  19. SSQ V3 N2_Final_13aug13.indd

    National Nuclear Security Administration (NNSA)

    off momentumvelocity transfer. Nonnuclear methods include gravity attractors and solar energy absorption. In Figure 1, scientists are calculating a nuclear explosion on the...

  20. Lean NOx Trap Regeneration Selectivity Towards N2O -- Similarities...

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

    This presentation uses a global model for the primary and secondary peaks to explain the chemical reactions. deer12bartova.pdf More Documents & Publications Spatiotemporal...

  1. Aspects of Four Dimensional N = 2 Field Theory

    E-Print Network [OSTI]

    Xie, Dan

    2011-07-11

    hypermulti- plets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134 22 Left: (p, q)-web realizing the TN theory, with aligned 7-branes. Right: Quiver diagram of the mirror of TN , with gauge groups U(r). The group at the center... gauge groups are U(r). . . 137 xiii FIGURE Page 25 Top: We take two copies of TN and gauge together two SU(N) Higgs symmetries. Bottom: Its mirror. We gauge together two SU(N) Coulomb symmetries. This ends up eliminating the two T[SU(N)] tails. Here...

  2. Self-Dual Supergravity from N = 2 Strings

    E-Print Network [OSTI]

    de Boer, J.

    2010-01-01

    the difference between the RNS formulation of the (1,2)to the conventional N = 1 RNS string through a non-localto formulate our model in RNS variables. One immediate

  3. Efficient algorithm for online N - 2 power grid contingency selection

    E-Print Network [OSTI]

    Kaplunovich, Petr A. (Petr Alexandrovich)

    2014-01-01

    Multiple element outages (N - k contingencies) have caused some of the most massive blackouts and disturbances in the power grid. Such outages affect millions of people and cost the world economy billions of dollars annually. ...

  4. SSQ V1 N2_6june11_FINAL

    National Nuclear Security Administration (NNSA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal GasAdministration Medal01 Sandia4) August 20123/%2A en NNSAReference to Mod/%2A19FY

  5. SSQ V3 N2_Final_13aug13.indd

    National Nuclear Security Administration (NNSA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal GasAdministration Medal01 Sandia4) August 20123/%2A en NNSAReference to Mod/%2A19FY4 *1

  6. Seed Packaging and Seed Characteristics in a Raphanus Hybrid-Derived Lineage

    E-Print Network [OSTI]

    Heredia, Sylvia Margarita

    2012-01-01

    CALIFORNIA RIVERSIDE Seed Packaging and Seed CharacteristicsFruit Wall Strength and Seed Packaging in the Hybrid-DerivedOF THE DISSERTATION Seed Packaging and Seed Characteristics

  7. TCM with Biopsychiatric Characteristics : : Marketing and the Imaginary of 'Five Phase Balance Regulation Therapy'

    E-Print Network [OSTI]

    Howard, Amanda Jayne

    2013-01-01

    Biopsychiatric Characteristics: Marketing and the ImaginaryBiopsychiatric Characteristics: Marketing and the Imaginarythe imaginary in the marketing of integrated medicine in

  8. Table HC1-5a. Housing Unit Characteristics by Type of Owner...

    Gasoline and Diesel Fuel Update (EIA)

    Unit Characteristics by Type of Owner-Occupied Housing Unit, Million U.S. Households, 2001 Housing Unit Characteristics RSE Column Factor: Total Owner- Occupied Units Type of...

  9. Table HC1-2a. Housing Unit Characteristics by Year of Construction...

    Gasoline and Diesel Fuel Update (EIA)

    2a. Housing Unit Characteristics by Year of Construction, Million U.S. Households, 2001 Housing Unit Characteristics RSE Column Factor: Total Year of Construction RSE Row Factors...

  10. Table HC1-3a. Housing Unit Characteristics by Household Income...

    Gasoline and Diesel Fuel Update (EIA)

    3a. Housing Unit Characteristics by Household Income, Million U.S. Households, 2001 Housing Unit Characteristics RSE Column Factor: Total 2001 Household Income Below Poverty Line...

  11. Table HC1-7a. Housing Unit Characteristics by Four Most Populated...

    Gasoline and Diesel Fuel Update (EIA)

    Housing Unit Characteristics by Four Most Populated States, Million U.S. Households, 2001 Housing Unit Characteristics RSE Column Factor: Total U.S. Four Most Populated States...

  12. "Table HC3.11 Home Electronics Characteristics by Owner-Occupied...

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

    "2.",3.6,3,2.6,"Q","Q","Q","Q" "3 or More",0.6,0.5,0.4,"Q","N","Q","N" "Plasma Television Sets",3.6,2.8,2.2,"Q","Q","Q","Q" "1.",2.7,2.1,1.8,"Q","Q","Q","N" "2 or...

  13. Effect of core structure irradiation on the RBMK neutron characteristics

    SciTech Connect (OSTI)

    Balygin, A. A., E-mail: balyg@dcnr.vver.kiae.ru; Krayushkin, A. V. [National Research Center Kurchatov Institute (Russian Federation)

    2014-12-15

    The effect of changes in the graphite density and fuel channel diameters on the RBMK neutron characteristics is estimated. It is shown that uncertainty of those quantities can lead to a noticeable difference between the calculated and experimental values of the steam coefficient of reactivity and the subcriticality of the reactor.

  14. Demographic characteristics of southern flounder, Paralichthys lethostigma, harvested by an

    E-Print Network [OSTI]

    Scharf, Fred

    -level effects and negatively affect long-term fishery yield. K E Y W O R D S : age structure, fishing practices are captured in stationary gillnets and pound nets. Nearly all commercial harvest occurs in estuarine watersDemographic characteristics of southern flounder, Paralichthys lethostigma, harvested

  15. MMS 2007-035 Seafloor Characteristics and Distribution

    E-Print Network [OSTI]

    Mathis, Wayne N.

    seismic data archived with MMS and his unwavering support and patience during all the phases of this study. This study was sponsored by the Minerals Management Service under Contract/Order No. Open Market / 01-03-POOCS Study MMS 2007-035 Seafloor Characteristics and Distribution Patterns of Lophelia pertusa

  16. Municipal solid waste characteristics and management in Allahabad, India

    E-Print Network [OSTI]

    Columbia University

    Municipal solid waste characteristics and management in Allahabad, India Mufeed Sharholy a , Kafeel parameters of the municipal solid waste management (MSWM) problem such as the generation rate of MSW and rise in community living standard accelerates the generation rate of muni- cipal solid waste (MSW

  17. Oak Ridge Reservation. Physical Characteristics and National Resources

    SciTech Connect (OSTI)

    Parr, Patricia Dreyer; Joan, F. Hughes

    2006-10-09

    The topology, geology, hydrology, vegetation, and wildlife of the Oak Ridge Reservation (ORR) provide a complex and intricate array of resources that directly impact land stewardship and use decisions. The purpose of this document is to consolidate general information regarding the natural resources and physical characteristics of the ORR.

  18. CAR2 Displays Unique Ligand Binding and RXR Heterodimerization Characteristics

    E-Print Network [OSTI]

    Omiecinski, Curtis

    CAR2 Displays Unique Ligand Binding and RXR Heterodimerization Characteristics Scott S. Auerbach ABSTRACT: The constitutive androstane receptor (CAR; NR1I3) regulates the expression of genes involved in xenobiotic metabolism. Alternative splicing of the human CAR gene yields an array of mRNAs that encode

  19. POWER CHARACTERISTICS OF INDUSTRIAL AIR COMPRESSORS Chris Schmidt

    E-Print Network [OSTI]

    Kissock, Kelly

    POWER CHARACTERISTICS OF INDUSTRIAL AIR COMPRESSORS Chris Schmidt Graduate Assistant / Project of Mechanical and Aerospace Engineering University of Dayton Dayton, Ohio ABSTRACT The power draw to energy input, which we call the average operating efficiency, based on input power to the compressor

  20. Fundamental Characteristics of Feedback Technical Report of the ISIS Group

    E-Print Network [OSTI]

    Antsaklis, Panos

    Fundamental Characteristics of Feedback Mechanisms Technical Report of the ISIS Group at the University of Notre Dame ISIS-2011-005 (This report is a revised version of the ISIS-2009-006 report) Panos J everywhere? Deeper understanding would make it possible to un- This report (ISIS-2011-005, September 2011

  1. Global observations and spectral characteristics of desert dust and

    E-Print Network [OSTI]

    Graaf, Martin de

    characteristics of desert dust and biomass burning scenes Conclusions and Outlook #12;where Rayleigh R340 Doubling-Adding KNMI Radiative Transfer Model Solar zenith angle = 30 Viewing zenith angle = 0 Surface Model Solar zenith angle = 30 Viewing zenith angle = 0 Surface albedo = 5% Absorbing aerosols

  2. animals --produce characteristic, heritable incubation times and patterns of brain

    E-Print Network [OSTI]

    Hays, Graeme

    animals -- produce characteristic, heritable incubation times and patterns of brain damage, the animalslivedalong,TSE-freelife,andmostly did not accumulate PrPSc in their brains (B. Chesebro, Rocky Mountain Labs, Hamilton, Montana). The injection of PrPSc -negative brain extracts from these mice into further

  3. Main Ecosystem Characteristics and Distribution of Wetlands in Boreal and

    E-Print Network [OSTI]

    9 Main Ecosystem Characteristics and Distribution of Wetlands in Boreal and Alpine Landscapes influenced while the rest are considered uninfluenced by human impact. Impacts are mainly from machines used or successional shifts to other vegetation types are more evident in such habitats. The main threats

  4. Research papers Tidal characteristics of the gulf of Tonkin

    E-Print Network [OSTI]

    calibration derived from a set of sensitivity experiments to model parameters. The tidal energy budgetResearch papers Tidal characteristics of the gulf of Tonkin Nguyen Nguyet Minh a,c , Marchesiello of this study is to revisit the dominant physical processes that characterize tidal dynamics in the Gulf

  5. Author's personal copy Radiation characteristics of Botryococcus braunii,

    E-Print Network [OSTI]

    Pilon, Laurent

    . Introduction Intensive use of fossil fuels increases concentration of carbon dioxide in the atmosphere 2009 Accepted 11 April 2009 Keywords: Radiative transfer Scattering Photobioreactors Carbon dioxide t This paper reports experimental measurements of the radiation characteristics of green algae used for carbon

  6. Wood of Giant Sequoia: Properties and Unique Characteristics1

    E-Print Network [OSTI]

    Wood of Giant Sequoia: Properties and Unique Characteristics1 Douglas D. Piirto2 Abstract: Wood tree species. Wood properties such as specific gravity, various mechanical properties, extractive be considered for planting stock in managed production forests to increase future supplies of wood having

  7. CHARACTERISTIC p ANALOGUE OF MODULES WITH FINITE CRYSTALLINE HEIGHT

    E-Print Network [OSTI]

    Abrashkin, Victor

    CHARACTERISTIC p ANALOGUE OF MODULES WITH FINITE CRYSTALLINE HEIGHT Victor Abrashkin1 Abstract of Galois modules with crystalline height h N. If h = 1 these modules appear as geometric points[K]-modules with crystalline height h. Examples of such modules are given by subquotients of crystalline representations of K

  8. STUDY OF RADIOACTIVE IMPURITIES IN SOLIDS PART ONE : RADIATION CHARACTERISTICS

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    285 STUDY OF RADIOACTIVE IMPURITIES IN SOLIDS PART ONE : RADIATION CHARACTERISTICS F. HARTMANN problem of the emission of radiation by radioactive nuclei is usually treated in a very general form for the computation of relaxation and radiofrequency effects. LE JOURNAL DE PHYSIQUE TOME 33, F?VRIER-MARS 1972

  9. The Characteristics of Innovative, Mechanical Products* Matthew N. Saunders1

    E-Print Network [OSTI]

    Seepersad, Carolyn Conner

    The Characteristics of Innovative, Mechanical Products* Matthew N. Saunders1 and Carolyn C, but a few products are exceptionally successful, earning innovation awards and other benchmarks of success. To better understand the features of those innovative products, 197 award-winning products are analyzed

  10. Influence of wind characteristics on turbine performance Ioannis Antoniou (1)

    E-Print Network [OSTI]

    Influence of wind characteristics on turbine performance Ioannis Antoniou (1) , Rozenn Wagner (1 (2) , Peder Enevoldsen (2) , Leo Thesbjerg (3) (1): Wind Energy Department, Ris): Siemens Wind Power (3): Vestas Wind Systems A/S Summary The uncertainty of power performance measurements

  11. SOIL MOISTURE CHARACTERISTICS IN UPPER PART OF HINDON RIVER CATCHMENT

    E-Print Network [OSTI]

    Kumar, C.P.

    1 SOIL MOISTURE CHARACTERISTICS IN UPPER PART OF HINDON RIVER CATCHMENT C. P. Kumar* Vijay Kumar** Vivekanand Singh*** ABSTRACT Knowledge of the physics of soil water movement is crucial to the solution for estimating the soil hydraulic properties are required for prediction of soil water flow. This paper presents

  12. Understanding Data Center Traffic Characteristics Theophilus Benson, Ashok Anand,

    E-Print Network [OSTI]

    Liblit, Ben

    Understanding Data Center Traffic Characteristics Theophilus Benson, Ashok Anand, Aditya Akella Research Redmond, WA, USA mzh@microsoft.com ABSTRACT As data centers become more and more central patterns in data center networks that can inform and help evaluate research and operational approaches. We

  13. Exotic fusion systems and Euler characteristics Eske Spars

    E-Print Network [OSTI]

    Mller, Jesper Michael

    Exotic fusion systems and Euler characteristics Eske Spars Advisor: Jesper M. Mller September 19;Abstract We construct and examine some specific exotic fusion systems: The Ruiz-Viruel examples defined over over the extraspecial group of order 73 and exponent 7, and the Solomon fusion systems defined

  14. Molecules, muscles, and machines: Universal performance characteristics of motors

    E-Print Network [OSTI]

    Marden, James

    Molecules, muscles, and machines: Universal performance characteristics of motors James H. Marden, piston engines, electric motors, and all types of jets. Dependence of force production and stress of materials and mechanisms. Organisms and machines move by exerting forces on their external environment

  15. RESERVOIR SIMULATION USING MIXED METHODS, A MODIFIED METHOD CHARACTERISTICS,

    E-Print Network [OSTI]

    Russell, Thomas F.

    RESERVOIR SIMULATION USING MIXED METHODS, A MODIFIED METHOD CHARACTERISTICS, AND LOCAL GRID Mathematical models for reservoir ow are governed by partial di#11;erential equations whose solution may v is the total Darcy velocity, p the total uid pressure [6], S denotes the saturation of water

  16. Chaotic characteristics of corona discharges in atmospheric air

    SciTech Connect (OSTI)

    Tan Xiangyu; Zhang Qiaogen; Wang Xiuhuan; Sun Fu; Zha Wei; Jia Zhijie [State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, 28 West Xianning Road, Xi'an 710049 (China)

    2008-11-15

    A point-plane electrode system in atmospheric air is established to investigate the mechanism of the corona discharge. By using this system, the current pulses of the corona discharges under the 50 Hz ac voltage are measured using partial discharge (PD) measurement instrument and constitute the point-plane voltage-current (V-I) characteristic equation together with the voltage. Then, this paper constructs the nonlinear circuit model and differential equations of the system in an attempt to give the underlying dynamic mechanism based on the nonlinear V-I characteristics of the point-plane corona discharges. The results show that the chaotic phenomenon is found in the corona circuit by the experimental study and nonlinear dynamic analysis. The basic dynamic characteristics, including the Lyapunov exponent, the existence of the strange attractors, and the equilibrium points, are also found and analyzed in the development process of the corona circuit. Moreover, the time series of the corona current pulses obtained in the experiment is used to demonstrate the chaotic characteristics of the corona current based on the nonlinear dynamic circuit theory and the experimental basis. It is pointed out that the corona phenomenon is not a purely stochastic phenomenon but a short term deterministic chaotic activity.

  17. Two tests for multivariate normality based on the characteristic function

    E-Print Network [OSTI]

    Arcones, Miguel A.

    Two tests for multivariate normality based on the characteristic function Miguel A. Arcones-mail:arcones@math.binghamton.edu April 10, 2007 Abstract We present two tests for multivariate normality. The presented tests are based on the Levy characterization of the normal distribution and on the BHEP tests. The tests are affine

  18. Investigation of lasing characteristics of 1% Nd : YAG laser ceramics

    SciTech Connect (OSTI)

    Vatnik, S M; Osipov, V V; Vedin, I A; Kurbatov, P F

    2013-03-31

    The lasing characteristics of 1 % Nd : YAG laser ceramics synthesised at the Institute of Electrophysics, Ural Branch, Russian Academy of Sciences are studied. CW lasing is obtained in all the samples with the slope and total optical efficiencies of 25 % and 18 %, respectively. Intrinsic absorption and scattering losses in the ceramics are estimated. (extreme light fields and their applications)

  19. Characteristics of Aluminum Biosorption by Sargassum fluitans Biomass

    E-Print Network [OSTI]

    Volesky, Bohumil

    Characteristics of Aluminum Biosorption by Sargassum fluitans Biomass Hak Sung Lee1, * and Bohumil3A 2B2, Canada Abstract: Biomass of nonliving brown seaweed Sargassum fluitans pretreated.5. There are indications that the biomass hydroxyl groups were involved in sequestering the aluminum in the form

  20. Characteristics of meteorological parameters associated with Hurricane Isabel

    E-Print Network [OSTI]

    Singh, Ramesh P.

    Characteristics of meteorological parameters associated with Hurricane Isabel R. Gautam, G. Cervone-sea interactions associated with Hurricane Isabel, which landed on the east coast of the United States on September 18, 2003. Hurricane Isabel is considered to be one of the most significant and severe tropical

  1. Molecular Simulation Studies of Separation of CO2/N2, CO2/CH4, and CH4/N2

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail.Theory ofDid you notHeatMaRIEdioxide capture |GEUtilizing sevenNationalNEWSSeeby ZIFs

  2. The characteristics of neutrinonuclear reactions at E_nu = 1 - 3 GeV

    E-Print Network [OSTI]

    N. M. Agababyan; V. V. Ammosov; M. Atayan; N. Grigoryan; H. Gulkanyan; A. A. Ivanilov; Zh. Karamyan; V. A. Korotkov

    2004-08-25

    For the first time, the characteristics of the charged current neutrinonuclear interactions are investigated at $E_{\

  3. Differences in the Physical Characteristics of Diesel PM with Increasing Biofuel Blend Level

    Broader source: Energy.gov [DOE]

    Measure physical characteristics, carbon state, and surface bound oxygen of soot from biodiesel blends.

  4. Evolution of Cyclone Characteristics The composite evolution of west and east Atlantic cyclone is likely to

    E-Print Network [OSTI]

    Dacre, Helen

    Evolution of Cyclone Characteristics The composite evolution of west and east Atlantic cyclone. The spatial distribution and evolution characteristics of North Atlantic cyclones. Mon. Wea. Rev. 137, 99 characteristics and the evolution of these characteristics are calculated in composite cyclones. Method Cyclones

  5. Energy loss characteristics of heavy ions in nitrogen, carbon dioxide, argon, hydrocarbon gases and tradescantia tissue

    E-Print Network [OSTI]

    Dennis, J A

    1971-01-01

    Energy loss characteristics of heavy ions in nitrogen, carbon dioxide, argon, hydrocarbon gases and tradescantia tissue

  6. Electrical characteristics of Harwell 7000 series dataway (Multilayer printed circuit board type 94/40148-6)

    E-Print Network [OSTI]

    Hale, F H

    1970-01-01

    Electrical characteristics of Harwell 7000 series dataway (Multilayer printed circuit board type 94/40148-6)

  7. Pulse combustor modeling demonstration of the importance of characteristic times

    SciTech Connect (OSTI)

    Barr, P.K.; Keller, J.O.; Bramlette, T.T.; Dec, J.E. (Combustion Research Facility, Sandia National Lab., Livermore, CA (US)); Westbrook, C.K. (Lawrence Livermore National Lab., Univ. of California, Livermore, CA (US))

    1990-12-01

    A numerical model has been developed to study the sensitivity of a pulse combustor's performance to changes in the relative timing between several of the dominant physical processes. The model is used to demonstrate the importance of the characteristic times associated with acoustics, fluid mixing, and chemical kinetics, which have been identified from both theoretical and experimental evidence. The combination of submodels for acoustics, injection, and combustion produces a pulse combustor model that is dynamic in that it fully couples the injection and mixing processes to the acoustic waves. Comparisons of simulations with experimental results show good agreement, verifying the model over a wide range of operating conditions. Because the model provides more control of the dominant processes than can be obtained in experiments, the parametric study establishes the cause-effect relations between the characteristic times and the resulting combustor performance.

  8. Design characteristics for facilities which process hazardous particulate

    SciTech Connect (OSTI)

    Abeln, S.P.; Creek, K.; Salisbury, S.

    1998-12-01

    Los Alamos National Laboratory is establishing a research and processing capability for beryllium. The unique properties of beryllium, including light weight, rigidity, thermal conductivity, heat capacity, and nuclear properties make it critical to a number of US defense and aerospace programs. Concomitant with the unique engineering properties are the health hazards associated with processing beryllium in a particulate form and the potential for worker inhalation of aerosolized beryllium. Beryllium has the lowest airborne standard for worker protection compared to all other nonradioactive metals by more than an order of magnitude. This paper describes the design characteristics of the new beryllium facility at Los Alamos as they relate to protection of the workforce. Design characteristics to be reviewed include; facility layout, support systems to minimize aerosol exposure and spread, and detailed review of the ventilation system design for general room air cleanliness and extraction of particulate at the source.

  9. Identification of airfoil characteristics for optimum wind turbine performance / b

    E-Print Network [OSTI]

    Miller, Leonard Scott

    1983-01-01

    with a performance optimization routine was used to perform the analyses. The relationship between airfoil lift and drag characteristics and turbine performance was determined and discussed. High lift and low drag was found to improve, respectively..., the low and high tip speed ratio power output of the tur bine. An investigation using the NACA 63 series family showed that airfoils with 12 to 15 percent thickness should generate good performance over a broad range of tip speed ratios. iv...

  10. Modeling of current characteristics of segmented Langmuir probe on DEMETER

    SciTech Connect (OSTI)

    Imtiaz, Nadia; Marchand, Richard [Department of Physics, University of Alberta, Edmonton, Alberta T6G 2E1 (Canada)] [Department of Physics, University of Alberta, Edmonton, Alberta T6G 2E1 (Canada); Lebreton, Jean-Pierre [Laboratoire de Physique et Chimie de l'Environnement et de l'Espace (LPC2E), CNRS-Universit d'Orlans, Orlans Cedex (France)] [Laboratoire de Physique et Chimie de l'Environnement et de l'Espace (LPC2E), CNRS-Universit d'Orlans, Orlans Cedex (France)

    2013-05-15

    We model the current characteristics of the DEMETER Segmented Langmuir probe (SLP). The probe is used to measure electron density and temperature in the ionosphere at an altitude of approximately 700 km. It is also used to measure the plasma flow velocity in the satellite frame of reference. The probe is partitioned into seven collectors: six electrically insulated spherical segments and a guard electrode (the rest of the sphere and the small post). Comparisons are made between the predictions of the model and DEMETER measurements for actual ionospheric plasma conditions encountered along the satellite orbit. Segment characteristics are computed numerically with PTetra, a three-dimensional particle in cell simulation code. In PTetra, space is discretized with an unstructured tetrahedral mesh, thus, enabling a good representation of the probe geometry. The model also accounts for several physical effects of importance in the interaction of spacecraft with the space environment. These include satellite charging, photoelectron, and secondary electron emissions. The model is electrostatic, but it accounts for the presence of a uniform background magnetic field. PTetra simulation results show different characteristics for the different probe segments. The current collected by each segment depends on its orientation with respect to the ram direction, the plasma composition, the magnitude, and the orientation of the magnetic field. It is observed that the presence of light H{sup +} ions leads to a significant increase in the ion current branch of the I-V curves of the negatively polarized SLP. The effect of the magnetic field is demonstrated by varying its magnitude and direction with respect to the reference magnetic field. It is found that the magnetic field appreciably affects the electron current branch of the I-V curves of certain segments on the SLP, whereas the ion current branch remains almost unaffected. PTetra simulations are validated by comparing the computed characteristics and their angular anisotropy with the DEMETER measurements, as simulation results are found to be in good agreement with the measurements.

  11. The morphological and chemical characteristics of respirable mineral wool fibers

    E-Print Network [OSTI]

    Butler, Donnie Ray

    1976-01-01

    12 17 18 18 21 23 27 38 46 REFERENCES APPENDIX A TABLE OF CONTENTS continued ~Pa e 48 PHYSICAL CHARACTERISTICS OF OBSERVED FIBERS APPENDIX B X-RAY COUNT DATA OF OBSERVED FIBERS APPENDIX C PUMP CALIBRATION APPENDIX D COATING... LIST OF FIGURES continued 16. Lengths of fibers present in the respirable sample 17. Widths of fibers present in the respirable sample 18. Ternary diagram showing the Magnesium:Silicon: Calcium ratio of the observed fibers 19. Ternary diagram...

  12. Quantifying long term changes in streamflow characteristics in Texas

    E-Print Network [OSTI]

    Garg, Gaurav

    2005-02-17

    and management projects, water use, watershed land use changes, and climate changes. The main objective of this thesis is to assess the significance of the impacts of human activities such as construction of reservoirs, water supply diversions, increased water... of aquatic life and riparian habitat. Streamflow characteristics change over time as a result of water resources development and management projects, water use, watershed land use changes, and climate changes. The impacts of human activities on low flows...

  13. Estimated global ocean wind power potential from QuikSCAT observations, accounting for turbine characteristics and siting

    E-Print Network [OSTI]

    Capps, Scott B; Zender, Charles S

    2010-01-01

    observations, accounting for turbine characteristics andobservations, accounting for turbine characteristics andglobal ocean 80 m wind power accounting for surface layer

  14. Vegetable oils: Precombustion characteristics and performance as diesel fuels

    SciTech Connect (OSTI)

    Bagby, M.O.

    1986-03-01

    Vegetable oils show technical promise as alternative fuels for diesel engines and have good potential as emergency fuels. Realistically, vegetable oils cause a number of problems when used in direct-injection diesel engines, generally attributable to inefficient combustion. At least partially responsible for poor combustion of neat vegetable oils are their high viscosity and non-volatility. To improve combustion several somewhat empirical approaches involving both chemical and physical modifications have been investigated by endurance tests in a variety of engines. Using the EMA 200 h engine screening test, several fuels show technical promise. These include methyl, ethyl, and butyl esters; high-oleic oils:diesel blend (1:3); diesel:soybean oil:butanol:cetane improver (33:33:33:1); and microemulsion fuels (diesel:soybean oil:190 proff ethanol:butanol, 50:25:5:20) and (soybean oil:methanol:2-octanol:cetane improver, 53:13:33:1). Using a pressure vessel, fuel injection system, and high speed motion picture camera, fuel injection characteristics of vegetable oils, e.g., soybean, sunflower, cottonseed, and peanut, have been observed in a quiescent nitrogen atmosphere at 480/sup 0/C and 4.1MPa. Their injection and atomization characteristics are markedly different from those of petroleum derived diesel fuels. Heating the vegetable oils to lower their viscosities increased spray penetration rate, reduced spray cone angles, and resulted in spray characteristics resembling those of diesel fuel. Significant chemical changes occurred following injection. Samples collected at about 400 microseconds after the injection event consisted of appreciable quantities of C/sub 4/-C/sub 16/ hydrocarbons, and free carboxyl groups were present.

  15. Heat Transfer Characteristics of a Generalized Divided Flow Heat Exchanger

    E-Print Network [OSTI]

    Singh, K. P.

    1979-01-01

    CHARACTERISTICS OF A GENERALIZED DIVIDED FLrnJ HEAT EXCHANGER KRISHNA P. SINGH, CHIEF ENGINEER JOSEPH OAT CORPORATION 2500 Broadway, Camden, New Jersey 08104 ,l\\bstract The concept of a "Di vi ded-fl O~I" heat exchanger is general i zed by 1oca t i n...-Pass Split-Flow Shell Trans. of the ASME, Journal of Heat Transfer, pp 408-416, Aug. 1964. (4) Singh, K. P. and Holtz, ~I.J., "Generalization of the Split Flow Heat Exchanger - Geometry for Enhanced Heat Transfer", 18th National ASME/AICHE Heat Transfer...

  16. Hydrogen-assisted catalytic ignition characteristics of different fuels

    SciTech Connect (OSTI)

    Zhong, Bei-Jing; Yang, Fan; Yang, Qing-Tao

    2010-10-15

    Hydrogen-assisted catalytic ignition characteristics of methane (CH{sub 4}), n-butane (n-C{sub 4}H{sub 10}) and dimethyl ether (DME) were studied experimentally in a Pt-coated monolith catalytic reactor. It is concluded that DME has the lowest catalytic ignition temperature and the least required H{sub 2} flow, while CH{sub 4} has the highest catalytic ignition temperature and the highest required H{sub 2} flow among the three fuels. (author)

  17. Optical system for determining physical characteristics of a solar cell

    DOE Patents [OSTI]

    Sopori, Bhushan L. (Denver, CO)

    2001-01-01

    The invention provides an improved optical system for determining the physical characteristics of a solar cell. The system comprises a lamp means for projecting light in a wide solid-angle onto the surface of the cell; a chamber for receiving the light through an entrance port, the chamber having an interior light absorbing spherical surface, an exit port for receiving a beam of light reflected substantially normal to the cell, a cell support, and an lower aperture for releasing light into a light absorbing baffle; a means for dispersing the reflection into monochromatic components; a means for detecting an intensity of the components; and a means for reporting the determination.

  18. Optical Absorption Characteristics of Silicon Nanowires for Photovoltaic Applications

    E-Print Network [OSTI]

    Parkash, Vidur

    2010-01-01

    Solar cells have generated a lot of interest as a potential source of clean renewable energy for the future. However a big bottleneck in wide scale deployment of these energy sources remain the low efficiency of these conversion devices. Recently the use of nanostructures and the strategy of quantum confinement have been as a general approach towards better charge carrier generation and capture. In this article we have presented calculations on the optical characteristics of nanowires made out of Silicon. Our calculations show these nanowires form excellent optoelectronic materials and may yield efficient photovoltaic devices.

  19. The adiabatic adsorption-desorption characteristics of silica gel beds

    E-Print Network [OSTI]

    Barker, James Marshall

    1979-01-01

    -desorpt1on characteristics of silica gel beds are i nvest1gated . The mathematical equations that descry 1 be desiccant bed behav1or are formulated and solved numer1cally us1ng f1nite difference methods. The equat1ons are derived such that both... of the finite d1fference program. The functional relationships are sufficiently accurate for most design purposes, and are r ead1 ly adaptable for use 1 n parametric studies of desiccant air condi t1 on1ng systems . DEDICATION Dedicated to My Parents...

  20. Motion characteristics of long ac arcs in atmospheric air

    SciTech Connect (OSTI)

    Gu Shanqiang; He Jinliang; Zeng Rong; Zhang Bo; Xu Guozheng; Chen Weijiang

    2007-01-29

    Experiments on the motion of long alternating current arcs in atmospheric air show that the anode and cathode arc roots have different motion characteristics because of different formation mechanisms. During a half cycle of the arc current, the anode arc root moves towards the direction of magnetic force and occasionally has a jumping motion, while the cathode arc root moves sufficiently slow to consider it stationary and hardly has any jump. The arc column has a complex shape and moves under the drive of the magnetic force and is also quickened by the lower arc root.

  1. Spectral characteristics of VUV radiation emitted by a laser plume

    SciTech Connect (OSTI)

    Khater, Mohamed A., E-mail: makhater@imamu.edu.sa [Department of Physics, College of Science, Al-Imam Mohammad Ibn Saud Islamic University (IMSIU), P.O. Box: 99909, 22611 Riyadh, KSA (Saudi Arabia)

    2013-12-16

    We study some experimental parameters and conditions of laser-generated plasma plumes using time-integrated, spatially resolved emission spectroscopy in the VUV range. The influences of the laser focusing lens type, laser wavelength, as well as laser pulse energy on the emission characteristics of the laser plasmas are investigated. The aim of the work is to improve the detection capability of the laser-induced plasma spectroscopy (LIPS) technique. The results obtained demonstrate a set of optimum conditions for maximum spectral line intensities and signal-to-background ratios of laser-produced plasmas in the VUV regime.

  2. Characteristic functions and process identification by neural networks

    E-Print Network [OSTI]

    Dente, J A

    1997-01-01

    Principal component analysis (PCA) algorithms use neural networks to extract the eigenvectors of the correlation matrix from the data. However, if the process is non-Gaussian, PCA algorithms or their higher order generalisations provide only incomplete or misleading information on the statistical properties of the data. To handle such situations we propose neural network algorithms, with an hybrid (supervised and unsupervised) learning scheme, which constructs the characteristic function of the probability distribution and the transition functions of the stochastic process. Illustrative examples are presented, which include Cauchy and Levy-type processes

  3. The proper characteristics of frame reference as a 4-invariants

    E-Print Network [OSTI]

    V. V. Voytik

    2015-06-02

    The paper derived 4-dimensional equation for the proper characteristics of the rigid frame of reference. From these conditions it follows the laws of motion of its proper tetrad and inverse kinematics equation, i. e., differential equations, which solves the problem of recovering the parameters of the motion of rigid frame of reference for their proper acceleration and angular velocity. In particular it is shown that the commission boost the moving frame of reference having Thomas precession for a new laboratory system will have a combination of two rotations: a new self-Thomas precession and rotation Wigner, which combine to give an initial frequency of the Thomas precession.

  4. Factors affecting the characteristics and utilization of sorghum silage

    E-Print Network [OSTI]

    Tolbert, Ronnie Edwin

    1977-01-01

    FACTORS AFFECTING THE CHARACT RISl'ICS AND UTILIZATION OF SORGHUI~I SILAGE A I'hesis by RONNIE EDi:IN TOLD 'RT Submitted to the Graduate College of Texas A~. I University in partial fulfillment of' the requirement for the de~sr e of I... to evaluate the effects of vari- eity, organic acid pre ervation, head and stover processin- methods a. id their ratio on sor "hue silage characteristics and utilization. I'. 'o sor hu-; varieties;rer harvested at thc early dou h stage, separated into head...

  5. Characteristic Lyapunov vectors in chaotic time-delayed systems

    E-Print Network [OSTI]

    Diego Paz; Juan M. Lpez

    2011-01-14

    We compute Lyapunov vectors (LVs) corresponding to the largest Lyapunov exponents in delay-differential equations with large time delay. We find that characteristic LVs, and backward (Gram-Schmidt) LVs, exhibit long-range correlations, identical to those already observed in dissipative extended systems. In addition we give numerical and theoretical support to the hypothesis that the main LV belongs, under a suitable transformation, to the universality class of the Kardar-Parisi-Zhang equation. These facts indicate that in the large delay limit (an important class of) delayed equations behave exactly as dissipative systems with spatiotemporal chaos.

  6. Parameter extraction from I-V characteristics of PV devices

    SciTech Connect (OSTI)

    Macabebe, Erees Queen B.; Sheppard, Charles J.; Dyk, E. Ernest van

    2011-01-15

    Device parameters such as series and shunt resistances, saturation current and diode ideality factor influence the behaviour of the current-voltage (I-V) characteristics of solar cells and photovoltaic modules. It is necessary to determine these parameters since performance parameters are derived from the I-V curve and information provided by the device parameters are useful in analyzing performance losses. This contribution presents device parameters of CuIn(Se,S){sub 2}- and Cu(In,Ga)(Se,S){sub 2}-based solar cells, as well as, CuInSe{sub 2}, mono- and multicrystalline silicon modules determined using a parameter extraction routine that employs Particle Swarm Optimization. The device parameters of the CuIn(Se,S){sub 2}- and Cu(In,Ga)(Se,S){sub 2}-based solar cells show that the contribution of recombination mechanisms exhibited by high saturation current when coupled with the effects of parasitic resistances result in lower maximum power and conversion efficiency. Device parameters of photovoltaic modules extracted from I-V characteristics obtained at higher temperature show increased saturation current. The extracted values also reflect the adverse effect of temperature on parasitic resistances. The parameters extracted from I-V curves offer an understanding of the different mechanisms involved in the operation of the devices. The parameter extraction routine utilized in this study is a useful tool in determining the device parameters which reveal the mechanisms affecting device performance. (author)

  7. Kinetic Modeling of Combustion Characteristics of Real Biodiesel Fuels

    SciTech Connect (OSTI)

    Naik, C V; Westbrook, C K

    2009-04-08

    Biodiesel fuels are of much interest today either for replacing or blending with conventional fuels for automotive applications. Predicting engine effects of using biodiesel fuel requires accurate understanding of the combustion characteristics of the fuel, which can be acquired through analysis using reliable detailed reaction mechanisms. Unlike gasoline or diesel that consists of hundreds of chemical compounds, biodiesel fuels contain only a limited number of compounds. Over 90% of the biodiesel fraction is composed of 5 unique long-chain C{sub 18} and C{sub 16} saturated and unsaturated methyl esters. This makes modeling of real biodiesel fuel possible without the need for a fuel surrogate. To this end, a detailed chemical kinetic mechanism has been developed for determining the combustion characteristics of a pure biodiesel (B100) fuel, applicable from low- to high-temperature oxidation regimes. This model has been built based on reaction rate rules established in previous studies at Lawrence Livermore National Laboratory. Computed results are compared with the few fundamental experimental data that exist for biodiesel fuel and its components. In addition, computed results have been compared with experimental data for other long-chain hydrocarbons that are similar in structure to the biodiesel components.

  8. A CHARACTERISTIC GALERKIN METHOD WITH ADAPTIVE ERROR CONTROL FOR THE CONTINUOUS CASTING PROBLEM

    E-Print Network [OSTI]

    A CHARACTERISTIC GALERKIN METHOD WITH ADAPTIVE ERROR CONTROL FOR THE CONTINUOUS CASTING PROBLEM. Engrg. (to appear) Abstract. the continuous casting problem is a convectiondominated nonlinearly, continuous casting, method of characteristics, convec tion dominated diffusion, degenerate parabolic

  9. A CHARACTERISTIC GALERKIN METHOD WITH ADAPTIVE ERROR CONTROL FOR THE CONTINUOUS CASTING PROBLEM

    E-Print Network [OSTI]

    Nochetto, Ricardo H.

    A CHARACTERISTIC GALERKIN METHOD WITH ADAPTIVE ERROR CONTROL FOR THE CONTINUOUS CASTING PROBLEM casting problem is a convectiondominated nonlinearly degenerate diffusion problem. It is discretized adaptive method. Keywords. a posteriori error estimates, continuous casting, method of characteristics

  10. Mineral status, bone characterisitics, carcass characteristics, and performance of feedlot lambs implanted with zeranol

    E-Print Network [OSTI]

    Niemann, Dawn Renee

    1998-01-01

    Fifty-four Rambouillet (avg wt, 34.6 kg) wether lambs were used to determine the effects of zeranol of p and N excretion, animal performance, carcass characteristics, and bone characteristics. Lambs were blocked by sire, ...

  11. The Impact of Urban Form and Housing Characteristics on Residential Energy Use

    E-Print Network [OSTI]

    Kim, Jong Yon

    2012-11-29

    characteristics and the energy use that result from residential electricity and fuel use. Ordinary least squares regression methods are used to measure the correlations between energy consumption and variables describing housing and urban form characteristics...

  12. Consistent and Inconsistent Social Characteristics and the Determination of Power and Prestige Orders

    E-Print Network [OSTI]

    Berger, Joseph; Fisek, M. Hamit

    2015-08-06

    and military rank, whether or not this characteristic is initially rele vant to the group's task (Moore, 1968; Cohen, Berger and Zelditch, forth coming). It has also been demonstrated to occur when the differentiating characteristic is a specific social...

  13. Literature Review of Airflow Fluid Characteristics and their Impact on Human Thermal Comfort

    E-Print Network [OSTI]

    Zhao, R.; Zhang, Y.; Yu, N.; Di, H.

    2006-01-01

    . The fluctuant characteristics of natural wind and mechanical wind are obviously different. However, the fluctuant characteristics of mechanical wind can shift to those of natural wind in some conditions. With the development of turbulence statistical theory...

  14. Current characteristics of faculty development in public two-year colleges in Texas

    E-Print Network [OSTI]

    Wesley, Jeanne

    2005-11-01

    This study measured the current characteristics of faculty development in public two-year colleges in Texas. Current characteristics were determined by an electronic questionnaire completed by the responding staff or faculty member designated...

  15. Table HC1-8a. Housing Unit Characteristics by Urban/Rural Location...

    Gasoline and Diesel Fuel Update (EIA)

    8a. Housing Unit Characteristics by UrbanRural Location, Million U.S. Households, 2001 Housing Unit Characteristics RSE Column Factor: Total UrbanRural Location 1 RSE Row Factors...

  16. Table HC1-10a. Housing Unit Characteristics by Midwest Census...

    Gasoline and Diesel Fuel Update (EIA)

    0a. Housing Unit Characteristics by Midwest Census Region, Million U.S. Households, 2001 Housing Unit Characteristics RSE Column Factor: Total U.S. Midwest Census Region RSE Row...

  17. Table HC1-9a. Housing Unit Characteristics by Northeast Census...

    Gasoline and Diesel Fuel Update (EIA)

    9a. Housing Unit Characteristics by Northeast Census Region, Million U.S. Households, 2001 Housing Unit Characteristics RSE Column Factor: Total U.S. Northeast Census Region RSE...

  18. Table HC1-12a. Housing Unit Characteristics by West Census Region...

    Gasoline and Diesel Fuel Update (EIA)

    2a. Housing Unit Characteristics by West Census Region, Million U.S. Households, 2001 Housing Unit Characteristics RSE Column Factor: Total U.S. West Census Region RSE Row Factors...

  19. Table HC1-11a. Housing Unit Characteristics by South Census...

    Gasoline and Diesel Fuel Update (EIA)

    1a. Housing Unit Characteristics by South Census Region, Million U.S. Households, 2001 Housing Unit Characteristics RSE Column Factor: Total U.S. South Census Region RSE Row...

  20. Experimental Study of Heat Transfer and Flow Characteristics for a New Type of Air Heater

    E-Print Network [OSTI]

    Zheng, H.; Fan, X.; Li, A.

    2006-01-01

    A new type air heater was developed, and an experimental set-up was built to analyze its characteristics. Within the Reynolds number from 2000 to 15000, the integrated characteristics in air heater channels with and without ...

  1. Centrifuge Permeameter for Unsaturated Soils. II: Measurement of the Hydraulic Characteristics

    E-Print Network [OSTI]

    Zornberg, Jorge G.

    Centrifuge Permeameter for Unsaturated Soils. II: Measurement of the Hydraulic Characteristics and hydraulic conductivity function K function , determined using a new centrifuge permeameter developed hydraulic characteristics of the compacted clay. The SWRCs and K functions defined using the centrifuge

  2. Distribution and Characteristics of Dentists Licensed to Practice in California, 2008

    E-Print Network [OSTI]

    Nicholson, Gina; Pourat, Nadereh

    2009-01-01

    Fact Sheet June 2009 Distribution and Characteristics ofADA Survey Center. Distribution of Dentists in the United

  3. Simulation of the frequency dispersion of effective dielectric characteristics of composite materials

    SciTech Connect (OSTI)

    Yakovlev, V. B.; Bardushkin, V. V.; Lavrov, I. V. Yakovleva, E. N.

    2014-12-15

    The problems of calculating the effective dielectric characteristics of polycrystalline materials are considered taking into account the frequency dependence of the characteristics of individual components. The effective characteristics of ceramics such as lead zirconate-titanate with titanium and zirconium oxide, metal lead, and water inclusions are calculated in the Maxwell-Garnett and Bruggeman approximations. The dependences of the effective dielectric characteristics on the inclusion concentration and applied electromagnetic-field frequency are obtained.

  4. SUMMARY OF REVISED TORNADO, HURRICANE AND EXTREME STRAIGHT WIND CHARACTERISTICS AT NUCLEAR FACILITY SITES

    Broader source: Energy.gov [DOE]

    Summary of Revised Tornado, Hurricane and Extreme Straight Wind Characteristics at Nuclear Facility Sites BY: John D. Stevenson Consulting Engineer

  5. The desorption purge time and thermal stability of 1,3-butadiene in a charcoal sampling tube

    E-Print Network [OSTI]

    Xie, Jianghua

    1997-01-01

    Thermal desorption is a technique used in the recovery of sampled airborne organic compounds from solid adsorbent trapping media. There are several advantages of this technique over solvent desorption: 1) absence of the ...

  6. Parameterization of GDL Liquid Water Front Propagation and Channel Accumulation for Anode Purge Scheduling in Fuel Cells

    E-Print Network [OSTI]

    Stefanopoulou, Anna

    that was observed via neutron imaging of an operational 53 cm2 PEMFC. Simulation results for the GDL and Membrane]. In the anode channel of a Proton Exchange Membrane Fuel Cell (PEMFC) operating with a Dead-Ended Anode (DEA with coupled PDEs describing liquid and gas transport through the Gas Diffusion Layer (GDL) of a PEMFC, which

  7. Characteristics of Sn segregation in Ge/GeSn heterostructures

    SciTech Connect (OSTI)

    Li, H.; Chang, C.; Chen, T. P.; Cheng, H. H., E-mail: hhcheng@ntu.edu.tw [Center for Condensed Matter Sciences and Graduate Institute of Electronics Engineering, National Taiwan University, Taipei 10617, Taiwan (China); Shi, Z. W.; Chen, H. [Institute of Physics, Chinese Academy of Sciences, Beijing 100190 (China)

    2014-10-13

    We report an investigation of Sn segregation in Ge/GeSn heterostructures occurred during the growth by molecular beam epitaxy. The measured Sn profile in the Ge layer shows that: (a) the Sn concentration decreases rapidly near the Ge/GeSn interface, and (b) when moving away from the interface, the Sn concentration reduced with a much slower rate. The 1/e decay lengths of the present system are much longer than those of the conventional group IV system of Ge segregation in the Si overlayer because of the smaller kinetic potential as modeled by a self-limited two-state exchange scheme. The demonstration of the Sn segregation shows the material characteristics of the heterostructure, which are needed for the investigation of its optical properties.

  8. Analysis of characteristic of microwave regeneration for diesel particulate filter

    SciTech Connect (OSTI)

    Ning Zhi; Zhang Guanglong; Lu Yong; Liu Junmin; Gao Xiyan; Liang Iunhui; Chen Jiahua [Dalian Univ. of Technology (China)

    1995-12-31

    The mathematical model for the microwave regeneration of diesel particulate filter is proposed according to the characteristic of microwave regeneration process. The model is used to calculate the temperature field, distribution of particulate and density field of oxygen in the filter during the process of regeneration with typical ceramic foam particulate filter data. The parametric study demonstrates how some of the main parameters, such as microwave attenuation constant of the filter, filter particulate loading, the power and distribution of microwave energy and so on, affect the efficiency of regeneration, the maximum filter temperature and regeneration duration. The results show that it is possible to regenerate the diesel particulate filters in certain conditions by using microwave energy. This paper can give one a whole understanding to several main factors that have effects on the process of microwave regeneration and provide a theoretical basis for the optimal design of the microwave regeneration system.

  9. Kerosene space heaters--combustion technology and kerosene characteristics

    SciTech Connect (OSTI)

    Kubayashi, k.; I Wasaki, N.

    1984-07-01

    This paper describes kerosene combustion technology. Unvented wick-type kerosene space heaters are very popular in Japan because of their economy and convenience. In recent years new vaporized kerosene burners having premixed combustion systems have been developed to solve some of the problems encountered in the older portable type. Some of the features of the new burners are instantaneous ignition, no vaporizing deposit on the burner and a wide range heating capacity. These new kerosene heaters have four major components: an air supply fan, a fuel supply assembly, a burner assembly and a control assembly. These heaters are designed to be highly reliable, have stable combustion characteristics, yield minimum carbon deposit. Finally, they are simple and inexpensive to operate.

  10. Parallel Scaling Characteristics of Selected NERSC User ProjectCodes

    SciTech Connect (OSTI)

    Skinner, David; Verdier, Francesca; Anand, Harsh; Carter,Jonathan; Durst, Mark; Gerber, Richard

    2005-03-05

    This report documents parallel scaling characteristics of NERSC user project codes between Fiscal Year 2003 and the first half of Fiscal Year 2004 (Oct 2002-March 2004). The codes analyzed cover 60% of all the CPU hours delivered during that time frame on seaborg, a 6080 CPU IBM SP and the largest parallel computer at NERSC. The scale in terms of concurrency and problem size of the workload is analyzed. Drawing on batch queue logs, performance data and feedback from researchers we detail the motivations, benefits, and challenges of implementing highly parallel scientific codes on current NERSC High Performance Computing systems. An evaluation and outlook of the NERSC workload for Allocation Year 2005 is presented.

  11. Design and operational characteristics of a cast steel mass spectrometer

    SciTech Connect (OSTI)

    Blantocas, Gene Q.; Ramos, Henry J.; Wada, Motoi

    2004-09-01

    A cast steel magnetic sector mass analyzer is developed for studies of hydrogen and helium ion beams generated by a gas discharge compact ion source. The optimum induced magnetic flux density of 3500 G made it possible to scan the whole spectrum of hydrogen and helium ion species. Analysis of beam characteristics shows that the mass spectrometer sensitivity, and resolving power are approximately inversely proportional. The resolution is enhanced at higher pressures and lower current discharges. In contrast, the instrument sensitivity increased at higher current discharges and decreased at higher pressures. Calculations of the ultimate resolving power with reference to analyzer dimensions yield a numerical value of 30. System anomaly in the form of spherical aberrations was also analyzed using the paraxial beam envelope equation. Beam divergence is most significant at high discharge conditions where angular spread reaches an upper limit of 8.6 deg.

  12. Characteristic of a triple-cathode vacuum arc plasma source

    SciTech Connect (OSTI)

    Xiang, W.; Li, M.; Chen, L.

    2012-02-15

    In order to generate a better ion beam, a triple-cathode vacuum arc plasma source has been developed. Three plasma generators in the vacuum arc plasma source are equally located on a circle. Each generator initiated by means of a high-voltage breakdown between the cathode and the anode could be operated separately or simultaneously. The arc plasma expands from the cathode spot region in vacuum. In order to study the behaviors of expanding plasma plume generated in the vacuum arc plasma source, a Langmuir probe array is employed to measure the saturated ion current of the vacuum arc plasma source. The time-dependence profiles of the saturated current density of the triple vacuum arc plasma source operated separately and simultaneously are given. Furthermore, the plasma characteristic of this vacuum arc plasma source is also presented in the paper.

  13. Correlations in Characteristic Data of Concentrator Photovoltaics (Poster)

    SciTech Connect (OSTI)

    Sweet, C.; Bosco, N.; Kurtz, S.

    2011-02-01

    This study is motivated by a reported 1-2% infant mortality rate in concentrator photovoltaic cell assemblies. Approximately 650 bare III-V multi-junction PV cells were initially characterized via electroluminescence imaging and both light and dark current-voltage responses were recorded. The cells were then packaged into receivers and their IV response again evaluated both before and after an outdoor high concentration exposure of at least four hours above 750 DNI. Correlations exist between the initial dark IV characteristic and artifacts found in the EL image. Initial results also suggest that artifacts observed in the bare cell may serve as an indicator for early on-sun degradation, though may not be able to predict the infant mortality population.

  14. Detailed characteristics of intermittent current pulses due to positive corona

    SciTech Connect (OSTI)

    Liu, Yang, E-mail: liuyangwuh520@sina.com; Cui, Xiang; Lu, Tiebing; Wang, Zhenguo; Li, Xuebao; Xiang, Yu; Wang, Xiaobo [State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206 (China)

    2014-08-15

    In order to get detailed characteristics of intermittent current pulses due to positive corona such as the repetition rate of burst-pulse trains, the peak value ratio of the primary pulse to the secondary pulse, the number of pulses per burst, and the interval of the secondary pulses, a systematic study was carried out in a coaxial conductor-cylinder electrode system with the conductor electrode being set with a discharge point. Empirical formulae for the number of pulses per burst and the interval of the secondary pulses are first presented. A theoretical model based on the motion of the space-charge clouds is proposed. Analysis with the model gives explanations to the experimental results and reveals some new insights into the physical mechanism of positive intermittent corona.

  15. Distributed utility technology cost, performance, and environmental characteristics

    SciTech Connect (OSTI)

    Wan, Y.; Adelman, S.

    1995-06-01

    Distributed Utility (DU) is an emerging concept in which modular generation and storage technologies sited near customer loads in distribution systems and specifically targeted demand-side management programs are used to supplement conventional central station generation plants to meet customer energy service needs. Research has shown that implementation of the DU concept could provide substantial benefits to utilities. This report summarizes the cost, performance, and environmental and siting characteristics of existing and emerging modular generation and storage technologies that are applicable under the DU concept. It is intended to be a practical reference guide for utility planners and engineers seeking information on DU technology options. This work was funded by the Office of Utility Technologies of the US Department of Energy.

  16. 1995 solid waste 30-year characteristics volume summary

    SciTech Connect (OSTI)

    Templeton, K.J.; DeForest, T.J.; Rice, G.I. [Pacific Northwest Lab., Richland, WA (United States); Valero, O.J. [Westinghouse Hanford Co., Richland, WA (United States)

    1995-10-01

    The Hanford Site has been designated by the US Department of Energy (DOE) to store, treat, and dispose of solid waste received from both onsite and offsite generators. This waste is currently or planned to be generated from ongoing operations, maintenance and deactivation activities, decontamination and decommissioning (D&D) of facilities, and environmental restoration (ER) activities. This document, prepared by Pacific Northwest Laboratory (PNL) under the direction of Westinghouse Hanford Company (WHC), describes the characteristics of the waste to be shipped to Hanford`s SWOC. The physical waste forms and hazardous constituents are described for the low-level mixed waste (LLMW) and the transuranic - transuranic mixed waste (TW{underscore}TRUM).

  17. Classification of fossil fuels according to structural-chemical characteristics

    SciTech Connect (OSTI)

    A.M. Gyul'maliev; G.S. Golovin; S.G. Gagarin [Institute for Fossil Fuels, Moscow (Russian Federation)

    2007-10-15

    On the basis of a set of linear equations that relate the amount of major elements n{sub E} (E = C, H, O, N, S) in the organic matter of fossil fuels to structural characteristics, such as the number of cycles R, the number of atoms n{sub E}, the number of mutual chemical bonds, the degree of unsaturation of the structure {delta}, and the extent of its reduction B, a structural-chemical classification of fossil coals that is closely related to the parameters of the industrial-genetic classification (GOST 25543-88) is proposed. Structural-chemical classification diagrams are constructed for power-generating coals of Russia; coking coals; and coals designed for nonfuel purposes including the manufacture of adsorbents, synthetic liquid fuel, ion exchangers, thermal graphite, and carbon-graphite materials.

  18. Modeling of RHIC insulating vacuum for system pumpdown characteristics

    SciTech Connect (OSTI)

    Todd, R.J.; Pate, D.J.; Welch, K.M.

    1993-06-01

    This paper presents a model for predicting the pumpdown characteristics of a 480 m RHIC (Relativistic Heavy Ion Collider) vacuum cryostat. The longitudinal and transverse conductances of a typical cryostat were calculated. A voltage analogue of these conductances was constructed for room temperature conditions. The total longitudinal conductance of a room temperature cryostat was thereby achieved. This conductance was then used to calculate the diameter of an equivalent long outgassing tube, having more convenient analytical expressions for pressure profiles when pumped. The equivalent of a unit outgassing rate for this tube was obtained using previously published MLI (multi-layer insulation) outgassing data. With this model one is then able to predict a cryostat pumpdown rate as a function of the location and size of roughing pumps.

  19. Predicting aerodynamic characteristic of typical wind turbine airfoils using CFD

    SciTech Connect (OSTI)

    Wolfe, W.P. [Sandia National Labs., Albuquerque, NM (United States); Ochs, S.S. [Iowa State Univ., Ames, IA (United States). Aerospace Engineering Dept.

    1997-09-01

    An investigation was conducted into the capabilities and accuracy of a representative computational fluid dynamics code to predict the flow field and aerodynamic characteristics of typical wind-turbine airfoils. Comparisons of the computed pressure and aerodynamic coefficients were made with wind tunnel data. This work highlights two areas in CFD that require further investigation and development in order to enable accurate numerical simulations of flow about current generation wind-turbine airfoils: transition prediction and turbulence modeling. The results show that the laminar-to turbulent transition point must be modeled correctly to get accurate simulations for attached flow. Calculations also show that the standard turbulence model used in most commercial CFD codes, the k-e model, is not appropriate at angles of attack with flow separation. 14 refs., 28 figs., 4 tabs.

  20. TRANSPORT CHARACTERISTICS OF SELECTED PWR LOCA GENERATED DEBRIS.

    SciTech Connect (OSTI)

    A. K. MAJI; B. MARSHALL; ET AL

    2000-10-01

    In the unlikely event of a Loss of Coolant Accident (LOCA) in a pressurized water reactor (PWR), break jet impingement would dislodge thermal insulation from nearby piping, as well as other materials within the containment, such as paint chips, concrete dust, and fire barrier materials. Steam/water flows induced by the break and by the containment sprays would transport debris to the containment floor. Subsequently, debris would likely transport to and accumulate on the suction sump screens of the emergency core cooling system (ECCS) pumps, thereby potentially degrading ECCS performance and possibly even failing the ECCS. In 1998, the U. S. Nuclear Regulatory Commission (NRC) initiated a generic study (Generic Safety Issue-191) to evaluate the potential for the accumulation of LOCA related debris on the PWR sump screen and the consequent loss of ECCS pump net positive suction head (NPSH). Los Alamos National Laboratory (LANL), supporting the resolution of GSI-191, was tasked with developing a method for estimating debris transport in PWR containments to estimate the quantity of debris that would accumulate on the sump screen for use in plant specific evaluations. The analytical method proposed by LANL, to predict debris transport within the water that would accumulate on the containment floor, is to use computational fluid dynamics (CFD) combined with experimental debris transport data to predict debris transport and accumulation on the screen. CFD simulations of actual plant containment designs would provide flow data for a postulated accident in that plant, e.g., three-dimensional patterns of flow velocities and flow turbulence. Small-scale experiments would determine parameters defining the debris transport characteristics for each type of debris. The containment floor transport methodology will merge debris transport characteristics with CFD results to provide a reasonable and conservative estimate of debris transport within the containment floor pool and subsequent accumulation of debris on the sump screen. The complete methodology will, of course, include a means of estimating debris generation, transport to the containment floor, transport to the sump screen, and the resulting loss of NPSH.

  1. DeNOx characteristics using two staged radical injection techniques

    SciTech Connect (OSTI)

    Kambara, S.; Kumano, Y.; Yukimura, K.

    2009-06-15

    Ammonia radical injection using pulsed dielectric barrier discharge (DBD) plasma has been investigated as a means to control NOx emissions from combustors. When DBD plasma-generated radicals (NH{sub 2}, NH, N, and H) are injected into a flue gas containing nitrogen oxide (NOx), NOx is removed efficiently by chain reactions in the gas phase. However, because the percentage of NOx removal gradually decreases with increasing oxygen concentrations beyond 1% O{sub 2}, improvement of the DeNOx (removal of nitrogen oxide) characteristics at high O{sub 2} concentrations was necessary for commercial combustors. A two-staged injection of the DeNOx agent was developed based on the detailed mechanisms of electron impact reactions and gas phase reactions. A concentration of H radical was observed to play an important role in NOx formation and removal. The effects of applied voltages, oxygen concentrations, and reaction temperatures on NOx removal were investigated under normal and staged injection. NOx removal was improved by approximately 20% using staged injection at O{sub 2} concentrations of 1 to 4%.

  2. Femtosecond laser plasma plume characteristics in the nanojoule ablation regime

    SciTech Connect (OSTI)

    Banerjee, S. P.; Chen, Zhijiang; Fedosejevs, R. [Department of Electrical and Computer Engineering, University of Alberta, Edmonton, Alberta T6G2V4 (Canada)] [Department of Electrical and Computer Engineering, University of Alberta, Edmonton, Alberta T6G2V4 (Canada)

    2013-05-14

    Laser ablation of chromium with nanojoule energy UV femtosecond pulses under background pressure conditions between 0.3 Torr and 700 Torr is studied and the corresponding plasma plume images at different times after irradiation are measured. The ablation focal spot is less than or the order of a micron when 170 nJ of laser pulse energy is used. This low pulse energy leads to short lifetimes of the plasma of the order of tens of nanoseconds. The plume shape changes with ambient pressure due to the collision with background gas. An axially stretched plume changes to a more circular plume as the pressure increases. In addition, a separation of the ionic and atomic components is observed at lower pressure. These two components move at significantly different velocities as well. The plasma plume expands at almost constant velocity at very low pressure but exhibits significant deceleration at higher pressure reaching an asymptotic stopping distance. Plume images are also obtained near the ablation threshold pulse energy. The plume characteristics are compared to different models of plume expansion.

  3. Magnetostrictive materials and method for improving AC characteristics in same

    DOE Patents [OSTI]

    Pulvirenti, Patricia P. (Chicago, IL); Jiles, David C. (Ames, IA)

    2001-08-14

    The present invention provides Terfenol-D alloys ("doped" Terfenol) having optimized performances under the condition of time-dependent magnetic fields. In one embodiment, performance is optimized by lowering the conductivity of Terfenol, thereby improving the frequency response. This can be achieved through addition of Group III or IV elements, such as Si and Al. Addition of these types of elements provides scattering sites for conduction electrons, thereby increasing resistivity by 125% which leads to an average increase in penetration depth of 80% at 1 kHz and an increase in energy conversion efficiency of 55%. The permeability of doped Terfenol remains constant over a wider frequency range as compared with undoped Terfenol. These results demonstrate that adding impurities, such as Si and Al, are effective in improving the ac characteristics of Terfenol. A magnetoelastic Gruneisen parameter, .gamma..sub.me, has also been derived from the thermodynamic equations of state, and provides another means by which to characterize the coupling efficiency in magnetostrictive materials on a more fundamental basis.

  4. The leaching characteristics of selenium from coal fly ashes

    SciTech Connect (OSTI)

    Wang, T.; Wang, J.; Burken, J.G.; Ban, H.; Ladwig, K.

    2007-11-15

    The leaching characteristics of selenium from several bituminous and subbituminous coal fly ashes under different pH conditions were investigated using batch methods. Results indicated that pH had a significant effect on selenium leaching from bituminous coal ash. The minimum selenium leaching occurred in the pH range between 3 and 4, while the maximum selenium leaching occurred at pH 12. The release of selenium from subbituminous coal ashes was very low for the entire experimental pH range, possibly due to the high content of calcium which can form hydration or precipitation products as a sink for selenium. The adsorption results for different selenium species indicated that Se(VI) was hardly adsorbable on either bituminous coal ashes or subbitumminous coal ashes at any pH. However, Se(I) was highly adsorbed by bituminous coal ashes under acidic pH conditions and was mostly removed by subbitumminous coal ashes across the entire pH range. This result suggests that the majority of selenium released from the tested fly ashes was Se(IV). A speciation-based model was developed to simulate the adsorption of Se(IV) on bituminous coal fly ash, and the pH-independent adsorption constants of HSeO{sup 3-} and SeO{sub 3}{sup 2-} were determined. The modeling approach is useful for understanding and predicting the release process of selenium from fly ash.

  5. Spectroscopic characteristics of the cyanomethyl anion and its deuterated derivatives

    E-Print Network [OSTI]

    Majumdar, Liton; Chakrabarti, Sandip K

    2013-01-01

    It has long been suggested that CH2CN- might be a carrier of one of the many poorly characterized diffuse interstellar bands. In this paper, our aim is to study various forms of CH2CN in the interstellar medium. Aim of this paper is to predict spectroscopic characteristics of various forms of CH2CN and its deuterated derivatives. Moreover, we would like to model the interstellar chemistry for making predictions for the column densities of such species around dark cloud conditions. A detailed quantum chemical simulations to present the spectral properties of various forms of the CH2CN. MP2 theory along with the aug-CCPVTZ basis set is used to obtain different spectroscopic constants of CH2CN-, CHDCN- and CD2CN- in the gas phase which are essential to predict rotational spectra of these species. We performed quantum chemical calculation to find out energetically the most stable spin states for these species. We have computed IR and electronic absorption spectra for different forms of CH2CN. Moreover, we have al...

  6. Intrinsic excitations in deformed nuclei: characteristic predictions of the IBA

    SciTech Connect (OSTI)

    Casten, R.F.

    1982-01-01

    Deformed nuclei represent perhaps the largest and best studied class of nuclear level schemes. The Interacting Boson Approximation (IBA) model is devised so as to provide a general framework for the description of low lying collective states in nuclei spanning vibrational, rotational (i.e., deformed) and axially asymmetric types as well as the transitional species intermediate between these limiting cases. The juxtaposition of these two statements makes it all the more surprising that until recently there had been no thorough test of the model in such nuclei. Partly, the explanation for this lies in the type of data required for an adequate test. Since the IBA predicts a broad range of collective states it requires a correspondingly thorough empirical test. Moreover, in deformed nuclei, though the characteristic predictions that distinguish the IBA from the traditional, familiar collective model of harmonic ..beta.. and ..gamma.. vibrations are important, their clearest manifestation occurs in very weak, hard-to-detect low energy transitions between excited vibrational bands (in particular between ..beta.. and ..gamma.. bands), that had not heretofore been systematically observed. The present brief summary will begin with a review of the properties of the (n,..gamma..) reaction that render it a useful empirical tool for such studies, and follow this with a description of the results of the /sup 168/Er study and the application of the IBA model to the resultant level scheme. The discussion will then be generalized to other deformed nuclei and to the inherent systematic predictions that must characterize the IBA for such nuclei. Many of these ideas will be related to the role of finite boson number in the IBA.

  7. Catalytic Synthesis of Oxygenates: Mechanisms, Catalysts and Controlling Characteristics

    SciTech Connect (OSTI)

    Kamil Klier; Richard G. Herman

    2005-11-30

    This research focused on catalytic synthesis of unsymmetrical ethers as a part of a larger program involving oxygenated products in general, including alcohols, ethers, esters, carboxylic acids and their derivatives that link together environmentally compliant fuels, monomers, and high-value chemicals. The catalysts studied here were solid acids possessing strong Br???????¸nsted acid functionalities. The design of these catalysts involved anchoring the acid groups onto inorganic oxides, e.g. surface-grafted acid groups on zirconia, and a new class of mesoporous solid acids, i.e. propylsulfonic acid-derivatized SBA-15. The former catalysts consisted of a high surface concentration of sulfate groups on stable zirconia catalysts. The latter catalyst consists of high surface area, large pore propylsulfonic acid-derivatized silicas, specifically SBA-15. In both cases, the catalyst design and synthesis yielded high concentrations of acid sites in close proximity to one another. These materials have been well-characterization in terms of physical and chemical properties, as well as in regard to surface and bulk characteristics. Both types of catalysts were shown to exhibit high catalytic performance with respect to both activity and selectivity for the bifunctional coupling of alcohols to form ethers, which proceeds via an efficient SN2 reaction mechanism on the proximal acid sites. This commonality of the dual-site SN2 reaction mechanism over acid catalysts provides for maximum reaction rates and control of selectivity by reaction conditions, i.e. pressure, temperature, and reactant concentrations. This research provides the scientific groundwork for synthesis of ethers for energy applications. The synthesized environmentally acceptable ethers, in part derived from natural gas via alcohol intermediates, exhibit high cetane properties, e.g. methylisobutylether with cetane No. of 53 and dimethylether with cetane No. of 55-60, or high octane properties, e.g. diisopropylether with blending octane No. of 105, and can replace aromatics in liquid fuels.

  8. Eddy current nondestructive testing device for measuring variable characteristics of a sample utilizing Walsh functions

    DOE Patents [OSTI]

    Libby, Hugo L. (Richland, WA); Hildebrand, Bernard P. (Richland, WA)

    1978-01-01

    An eddy current testing device for measuring variable characteristics of a sample generates a signal which varies with variations in such characteristics. A signal expander samples at least a portion of this generated signal and expands the sampled signal on a selected basis of square waves or Walsh functions to produce a plurality of signal components representative of the sampled signal. A network combines these components to provide a display of at least one of the characteristics of the sample.

  9. WAVE TRANSMISSION AND MOORING-FORCE CHARACTERISTICS OF PIPE-TIRE FLOATING BREAKWATERS

    E-Print Network [OSTI]

    Harms, Volker W.

    2013-01-01

    Experimental Results Wave~Transmission Data Page a. PT-1Appendix C - Detailed Wave-Transmission Diagrams . 121 Listing dynamics and load-transmission characteristics. Goodyear

  10. Performance Characteristics of Lithium-ion Batteries of Various Chemistries for Plug-in Hybrid Vehicles

    E-Print Network [OSTI]

    Burke, Andrew; Miller, Marshall

    2009-01-01

    Characteristics of Lithium-ion Batteries of VariousAdvisor utilizing lithium-ion batteries of the differentin hybrids. Keywords: lithium-ion batteries, plug-in hybrid

  11. Performance Characteristics of Lithium-ion Batteries of Various Chemistries for Plug-in Hybrid Vehicles

    E-Print Network [OSTI]

    Burke, Andrew; Miller, Marshall

    2009-01-01

    Characteristics of Lithium-ion Batteries of Variousare presented for lithium-ion cells and modules utilizingAdvisor utilizing lithium-ion batteries of the different

  12. Efficiency Factors and Radiation Characteristics of Spherical Scatterers in Absorbing Media

    E-Print Network [OSTI]

    Yin, Juan; Pilon, Laurent

    2006-01-01

    Howell, Thermal radiation heat transfer - Third Edition,properties, and heat, mass, and radiation transfer, Journalradiation characteristics of fused quartz containing bubbles, Journal of Thermophysics and Heat Transfer, (

  13. Clinical characteristics of ovarian cancer classified by BRCA1, BRCA2, and RAD51C status

    E-Print Network [OSTI]

    2014-01-01

    OPEN SUBJECT AREAS: OVARIAN CANCER DISEASES Received 9Characteristics of Ovarian Cancer Classified by BRCA1,B. A. The genetics of ovarian cancer. Best Pract Res Clin

  14. Assessing urban and rural neighborhood characteristics using audit and GIS data: derivation and reliability of constructs

    E-Print Network [OSTI]

    Evenson, Kelly R; Sotres-Alvarez, Daniela; Herring, Amy H; Messer, Lynne; Laraia, Barbara A; Rodrguez, Daniel A

    2009-01-01

    characteristics using audit and GIS data: derivation andgeographic information system (GIS) to create environmental-such as from gov- ernment GIS sources or by review of aerial

  15. Turbulent Flame Propagation Characteristics of High Hydrogen Content Fuels

    SciTech Connect (OSTI)

    Seitzman, Jerry; Lieuwen, Timothy

    2014-09-30

    This final report describes the results of an effort to better understand turbulent flame propagation, especially at conditions relevant to gas turbines employing fuels with syngas or hydrogen mixtures. Turbulent flame speeds were measured for a variety of hydrogen/carbon monoxide (H2/CO) and hydrogen/methane (H2/CH4) fuel mixtures with air as the oxidizer. The measurements include global consumption speeds (ST,GC) acquired in a turbulent jet flame at pressures of 1-10 atm and local displacement speeds (ST,LD) acquired in a low-swirl burner at atmospheric pressure. The results verify the importance of fuel composition in determining turbulent flame speeds. For example, different fuel-air mixtures having the same unstretched laminar flame speed (SL,0) but different fuel compositions resulted in significantly different ST,GC for the same turbulence levels (u'). This demonstrates the weakness of turbulent flame speed correlations based simply on u'/SL,0. The results were analyzed using a steady-steady leading points concept to explain the sensitivity of turbulent burning rates to fuel (and oxidizer) composition. Leading point theories suggest that the premixed turbulent flame speed is controlled by the flame front characteristics at the flame brush leading edge, or, in other words, by the flamelets that advance farthest into the unburned mixture (the so-called leading points). For negative Markstein length mixtures, this is assumed to be close to the maximum stretched laminar flame speed (SL,max) for the given fuel-oxidizer mixture. For the ST,GC measurements, the data at a given pressure were well-correlated with an SL,max scaling. However the variation with pressure was not captured, which may be due to non-quasi-steady effects that are not included in the current model. For the ST,LD data, the leading points model again faithfully captured the variation of turbulent flame speed over a wide range of fuel-compositions and turbulence intensities. These results provide evidence that the leading points model can provide useful predictions of turbulent flame speed over a wide range of operating conditions and flow geometries.

  16. Soil-Water Characteristic Curve Modeling at Low Water Content: Empirical and Semi-Empirical Approaches

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    Soil-Water Characteristic Curve Modeling at Low Water Content: Empirical and Semi model, the Modified Kovacs (MK) model for the determination of soil-water characteristic curve at the low water contents of two horizons of a soil from Burkina Faso. Combining terms from capillary state

  17. Aalborg Universitet Led spectral and power characteristics under hybrid PWM/AM dimming strategy

    E-Print Network [OSTI]

    Munk-Nielsen, Stig

    Aalborg Universitet Led spectral and power characteristics under hybrid PWM/AM dimming strategy Citation for published version (APA): Beczkowski, S., & Munk-Nielsen, S. (2010). Led spectral and power #12;LED SPECTRALAND POWER CHARACTERISTICS UNDER HYBRID PWM/AM DIMMING STRATEGY Szymon Bczkowski* Stig

  18. CHARACTERISTICS AND USE OF WILD TURKEY ROOST SITES IN SOUTHCENTRAL SOUTH DAKOTA

    E-Print Network [OSTI]

    CHARACTERISTICS AND USE OF WILD TURKEY ROOST SITES IN SOUTHCENTRAL SOUTH DAKOTA BY RANDALL ALLEN;CHARACTERISTICS AND USE OF WILD TURKEY ROOST SITES IN SOUTHCENTRAL SOUTH DAKarA This thesis is approved diameter wild turkey roost plots and control plots on a study area in Gregory County, South Dakota, during

  19. Windgenerated eddy characteristics in the lee of the island of Hawaii

    E-Print Network [OSTI]

    Qiu, Bo

    Click Here for Full Article Windgenerated eddy characteristics in the lee of the island of Hawaii to clarify the mesoscale eddy characteristics in the lee of the island of Hawaii, the largest island. In the immediate lee southwest of Hawaii (Region E), eddy signals have a predominant 60 day period and a short

  20. On the Impact of Energy Dissipation Model on Characteristic Distance in Wireless Networks

    E-Print Network [OSTI]

    Hossain, Ashraf

    2011-01-01

    In this paper we investigate the dependency of characteristic distance on energy dissipation model. Both the many-to-one and any-to-any communication paradigm have been presented for performance analysis. Characteristic distance has been derived for three different cases. This study will be useful for designing an energy-efficient wireless network where nodes are energy-constrained.

  1. METHOD OF EVALUATING TEMPERATURE IN LAKES WITH DESCRIPTION OF THERMAL CHARACTERISTICS

    E-Print Network [OSTI]

    , distribution of temperature, and thermal stratification in relation to morphometry and weather. The heatMETHOD OF EVALUATING TEMPERATURE IN LAKES WITH DESCRIPTION OF THERMAL CHARACTERISTICS OF CONVICT, are used as the basis for a description of thermal characteristics including annual temperature cycle

  2. The Texas Meat Packing Industry -- Structure, Operational Characteristics, and Competitive Practices

    E-Print Network [OSTI]

    Dietrich, Raymond A.; Farris, Donald E.

    1976-01-01

    Bulletin] The Texas Meat Packing Industry - Structure, Operational Characteristics, and Competitive Practices Mention of a trademar k'or a proprietary product does not constitute a guarantee or warranty of the product by The Texas Agricultural..., age, or national origin. [Blank Page in Original Bulletin] CONTENT S Page Highlights ................................................... ii Structural Characteristics of the Slaughter Industry ......... 3 Meat Packing Operations...

  3. SURVIVAL AND HOME RANGE CHARACTERISTICS OF MERRIAM'S TURKEY GOBBLERS IN THE SOUTHERN BLACK HILLS, SOUTH DAKOTA

    E-Print Network [OSTI]

    SURVIVAL AND HOME RANGE CHARACTERISTICS OF MERRIAM'S TURKEY GOBBLERS IN THE SOUTHERN BLACK HILLS;ii SURVIVAL AND HOME RANGE CHARACTERISTICS OF MERRIAM'S TURKEY GOBBLERS IN THE SOUTHERN BLACK l. I thank all fellow graduate students who helped trap turkeys and for making the office an enjoyable

  4. SOIL MOISTURE RETENTION CHARACTERISTICS AT RD 838 OF I. G. N. P. STAGE -II

    E-Print Network [OSTI]

    Kumar, C.P.

    1 SOIL MOISTURE RETENTION CHARACTERISTICS AT RD 838 OF I. G. N. P. STAGE - II C. P. Kumar* Sanjay knowledge of the relationships between soil moisture content (), soil water pressure (h) and unsaturated presents the soil moisture retention characteristics at RD 838 of Indira Gandhi Nahar Priyojana, Stage - II

  5. Soil and groundwater characteristics of saline sites supporting boreal mixedwood forests in northern Alberta

    E-Print Network [OSTI]

    Macdonald, Ellen

    Soil and groundwater characteristics of saline sites supporting boreal mixedwood forests September 2009. Lilles, E. B., Purdy, B. G., Chang, S. X. and Macdonald, S. E. 2010. Soil and groundwater characteristics of saline sites supporting boreal mixedwood forests in northern Alberta. Can. J. Soil Sci. 90: 1

  6. Inductive Characteristics of Power Distribution Grids in High Speed Integrated Circuits

    E-Print Network [OSTI]

    Friedman, Eby G.

    Inductive Characteristics of Power Distribution Grids in High Speed Integrated Circuits Andrey V characteristics of several types of gridded power distribution networks are described in this paper interconnect. In power distribution grids with alternating power and ground lines, the inductance is shown

  7. Inclusion of Human Subjects in Research Human Subjects Involvement and Characteristics

    E-Print Network [OSTI]

    Firestone, Jeremy

    Inclusion of Human Subjects in Research Human Subjects Involvement and Characteristics: Describe the proposed involvement of human subjects in the work outlined in the Research Design and Methods section. Describe the characteristics of the subject population, including their anticipated number, age range

  8. The Rotational Propulsion Characteristics of Scaled-up Helical Microswimmers with different heads and magnetic positioning

    E-Print Network [OSTI]

    of the cut-off frequency. The rotational propulsion characteristics of helical swimmers with a magnetic headThe Rotational Propulsion Characteristics of Scaled-up Helical Microswimmers with different heads and magnetic positioning Tiantian Xu1, Gilgueng Hwang2, Nicolas Andreff3 and Stephane Regnier1 Abstract

  9. Friction and Heat Transfer Characteristics of Silica and CNT Nanofluids in a Tube Flow

    E-Print Network [OSTI]

    Kostic, Milivoje M.

    Friction and Heat Transfer Characteristics of Silica and CNT Nanofluids in a Tube Flow MILIVOJE M@niu.edu * www.kostic.niu.edu Abstract: - An apparatus for exploring friction and heat transfer characteristics flow. Initial turbulent friction and heat transfer measurements for silica and carbon nanotube (CNT

  10. Convective heat transfer characteristics of China RP-3 aviation kerosene at supercritical pressure

    E-Print Network [OSTI]

    Guo, Zhixiong "James"

    Convective heat transfer characteristics of China RP-3 aviation kerosene at supercritical pressure Keywords: Supercritical pressure Aviation kerosene Convective heat transfer Numerical study a b s t r a c convective in kerosene pipe flow is complicated. Here the convective heat transfer characteristics of China

  11. Influences of vegetation characteristics and invertebrate abundance of Rio Grande wild turkey populations, Edwards Plateau, Texas

    E-Print Network [OSTI]

    Randel, Charles Jack

    2005-02-17

    , and cover scores of forbs, grass, litter, and bare ground at each nest site and surrounding area were sampled. This was done to determine if wild turkey hens selected nest sites with vegetative characteristics differing from surrounding habitat. Brood...

  12. Air quality resolution for health impact assessment: influence of regional characteristics

    E-Print Network [OSTI]

    Thompson, T. M.

    We evaluate how regional characteristics of population and background pollution might impact the selection of optimal air quality model resolution when calculating the human health impacts of changes to air quality. Using ...

  13. ORNL/TM-2000/160 Database Development of Land Use Characteristics

    E-Print Network [OSTI]

    ORNL/TM-2000/160 Database Development of Land Use Characteristics along Major U.S. Highways Demin Xiong Center for Transportation Analysis Energy Division June 2000 Prepared for Bureau of Transportation

  14. TARGET ENUMERATION IN SENSOR NETWORKS VIA INTEGRATION WITH RESPECT TO EULER CHARACTERISTIC

    E-Print Network [OSTI]

    Baryshnikov, Yuliy

    invariant -- the Euler characteristic -- molded into an appropriate integration theory. 1.1. Problem number of observables O in X and to each observable is associated a support, U, a compact contractible

  15. Spin relaxation characteristics in Ag nanowire covered with various oxides S. Karube,1,2

    E-Print Network [OSTI]

    Otani, Yoshichika

    characteristics, which determines the performance of spintronic devices such as lateral spin valves (LSVs to bring about new methods of manipulating mag- netization or detecting spin currents in spintronic devices

  16. Characteristics of syntactic processing : an examination utilizing behavioral and fMRI techniques

    E-Print Network [OSTI]

    Chen, Evan, 1975-

    2004-01-01

    This thesis explores two important factors that constrain the syntactic parser of the sentence processing mechanism, syntactic storage costs and plausibility information. It uses behavioral methods to explore the characteristics ...

  17. Discharge characteristics and dynamics of compressive plasma streams generated by a compact magnetoplasma compressor

    SciTech Connect (OSTI)

    Garkusha, I. E.; Tereshin, V. I.; Chebotarev, V. V.; Solyakov, D. G.; Petrov, Yu. V.; Ladygina, M. S.; Marchenko, A. K.; Staltsov, V. V.; Yelisyeyev, D. V. [National Academy of Sciences of Ukraine, Institute of Plasma Physics, National Science Center 'Kharkiv Institute of Physics and Technology,' (Ukraine)

    2011-11-15

    Results from experimental studies of a compact magnetoplasma compressor designed for operation with heavy gases are presented. The integral characteristics of the discharge and the energy contents and other parameters of the generated xenon plasma streams are determined.

  18. Characteristics of convective cells over the coastal regions of southeast Texas

    E-Print Network [OSTI]

    Robinson, Michael

    1998-01-01

    Vertical profiles of radar reflectivity and cloud-to-ground lightning characteristics associated with convective cells were analyzed for mesoscate systems occurring over the coastal regions of southeast Texas during the ...

  19. Transient method of characteristics via the Adiabatic, Theta, and Multigrid Amplitude Function methods

    E-Print Network [OSTI]

    Shaner, Samuel Christopher

    2014-01-01

    In this thesis, we investigated the Adiabatic, Theta, and Multigrid Amplitude Function (MAF) methods for solving the Method of Characteristics (MOC) formulation of the time-dependent neutron transport equation. The transient ...

  20. Measurements of static loading characteristics of a Flexurepivot Tilt Pad Hydrodynamic Bearing

    E-Print Network [OSTI]

    Walton, Nicholas Van Edward

    1995-01-01

    An experimental investigation examining the static loading characteristics of a four-pad, KMC FLEXUREPIVOT Tilt Pad Hydrodynamic Bearing is presented. Tests are conducted on the TRACE Fluid Film Bearing Element Test Rig for journal speeds ranging...

  1. Stress response effects on growth, carcass characteristics, and tenderness in Bonsmara-influenced steers

    E-Print Network [OSTI]

    Falkenberg, Shollie Marie

    2006-08-16

    Half-blood Bonsmara steers were evaluated for temperament during stressful situations to discover the relationships between behavioral stress responses, growth, carcass characteristics and tenderness. Two experiments were conducted to evaluate...

  2. Investigation on Wave Propagation Characteristics in Plates and Pipes for Identification of Structural Defect Locations

    E-Print Network [OSTI]

    Han, Je Heon

    2013-07-31

    For successful identification of structural defects in plates and pipes, it is essential to understand structural wave propagation characteristics such as dispersion relations. Analytical approaches to identify the dispersion relations...

  3. District Superintendent and School Board President Perceptions Regarding Leadership Characteristics for Superintendents of Texas Schools

    E-Print Network [OSTI]

    Groholski, Kenneth L.

    2010-07-14

    ABSTRACT District Superintendent and School Board President Perceptions regarding Leadership Characteristics for Superintendents of Texas Schools. (December 2009) Kenneth Lee Groholski, B.S., Sam Houston State University M.Ed., Tarleton State...

  4. SOIL MOISTURE RETENTION CHARACTERISTICS AND HYDRAULIC CONDUCTIVITY FOR DIFFERENT AREAS IN INDIA IN SELECTED STATES

    E-Print Network [OSTI]

    Kumar, C.P.

    SOIL MOISTURE RETENTION CHARACTERISTICS AND HYDRAULIC CONDUCTIVITY FOR DIFFERENT AREAS IN INDIA systems require knowledge of the relationships between soil moisture content (), soil water pressure (h) and unsaturated hydraulic conductivity (K). This study involved field and laboratory determination of soil

  5. An Evaluation of Steady-State Dehumidification Characteristics of Residential Central Air Conditioners, Final Report

    E-Print Network [OSTI]

    O'Neal, D. L.; Chan, N.; Somasundaram, S.; Katipamula, S.

    1987-01-01

    This report is the first of two reports on the project "Determination of the Transient Response Characteristics of High Efficiency Commercial Air Conditioners" funded by Houston Lighting and Power Company. The purpose ...

  6. Determination of the fuel characteristics of refuse-derived fuels by macroanalysis

    SciTech Connect (OSTI)

    Hecklinger, R.S.; Large, R.M.

    1980-01-01

    There is need for a means of determining the fuel characteristics of refuse-derived fuels to adjust the producer/user contractual relationship for fuel value. The authors discuss efforts to establish a macroanalysis procedure.

  7. Large-scale experimental investigation of flow characteristics in labyrinth seal geometries

    E-Print Network [OSTI]

    Younger, James Stanton

    1994-01-01

    order to determine the flow characteristics and leakage resistance properties of advanced labyrinth seals. A unique water test facility is used to acquire leakage resistance measurements for two-dimensional, planar models of multi-cavity, stepped...

  8. Vegetation and sediment characteristics of created and natural Spartina alterniflora marshes in Lower Galveston Bay, Texas

    E-Print Network [OSTI]

    Albertson, Andrea Kai

    1998-01-01

    Five natural and ten created Spartina altemiflora marshes in the Lower Galveston Bay System, Texas, were compared to determine if there were significantly different vegetative and sediment characteristics associated with ...

  9. Comparison of direct current and 50?Hz alternating current microscopic corona characteristics on conductors

    SciTech Connect (OSTI)

    Zhang, Shuai Zhang, Bo He, Jinliang

    2014-06-15

    Corona discharge is one of the major design factors for extra-high voltage and ultra-high voltage DC/AC transmission lines. Under different voltages, corona discharge reveals different characteristics. This paper aims at investigating DC and AC coronas on the microscopic scale. To obtain the specific characteristics of DC and AC coronas, a new measurement approach that utilizes a coaxial wire-cylinder corona cage is designed in this paper, and wires of different diameters are used in the experiment. Based on the measurements, the respective microscopic characteristics of DC and AC coronas are analyzed and compared. With differences in characteristics between DC and AC coronas proposed, this study provides useful insights into DC/AC corona discharges on transmission line applications.

  10. Cross-domain comparison of quantitative technology improvement using patent derived characteristics

    E-Print Network [OSTI]

    Benson, Christopher Lee

    2014-01-01

    This thesis compares the performance improvement rates of 28 technological domains with characteristics derived from the patents of the domains, seeking to objectively test theories of how and why technologies change over ...

  11. Performance Goal Practices: Characteristics of Teacher Usage and Implications for Social Relationships in Elementary School Classrooms

    E-Print Network [OSTI]

    Peterson, Lisa

    2012-10-19

    research on individual characteristics of students based on their placement in classrooms with high or low performance goal practices, there is a lack of research on how these practices affect their social relationships. These questions were examined...

  12. Estimation of Voice Source and Vocal Tract Characteristics Based on Multi-Frame Analysis

    E-Print Network [OSTI]

    Shiga, Yoshinori; King, Simon

    2003-01-01

    This paper presents a new approach for estimating voice source and vocal tract filter characteristics of voiced speech. When it is required to know the transfer function of a system in signal processing, the input and ...

  13. Erratum: "Conformations and charge transport characteristics of biphenyldithiol self-assembled-monolayer molecular electronic devices

    E-Print Network [OSTI]

    Goddard III, William A.

    Erratum: "Conformations and charge transport characteristics of biphenyldithiol self-Hoon Kim Materials and Process Simulation Center, California Institute of Technology, Pasadena, California, California Institute of Technology, Pasadena, California 91125-7400 Received 18 August 2005; accepted 6

  14. Conformations and charge transport characteristics of biphenyldithiol self-assembled-monolayer molecular electronic devices

    E-Print Network [OSTI]

    Goddard III, William A.

    Conformations and charge transport characteristics of biphenyldithiol self Simulation Center, California Institute of Technology, Pasadena, California 91125-7400 and Korea Institute and William A. Goddard IIIb Materials and Process Simulation Center, California Institute of Technology

  15. The Geography of Happiness: Connecting Twitter sentiment and expression, demographics, and objective characteristics of place

    E-Print Network [OSTI]

    Mitchell, Lewis; Frank, Morgan R; Dodds, Peter Sheridan; Danforth, Christopher M

    2013-01-01

    We conduct a detailed investigation of correlations between real-time expressions of individuals made across the United States and a wide range of emotional, geographic, demographic, and health characteristics. We do so by combining (1) a massive, geo-tagged data set comprising over 80 million words generated over the course of several recent years on the social network service Twitter and (2) annually-surveyed characteristics of all 50 states and close to 400 urban populations. Among many results, we generate taxonomies of states and cities based on their similarities in word use; estimate the happiness levels of states and cities; correlate highly-resolved demographic characteristics with happiness levels; and connect word choice and message length with urban characteristics such as education levels and obesity rates. Our results show how social media may potentially be used to estimate real-time levels and changes in population-level measures such as obesity rates.

  16. Precipitation Characteristics in Eighteen Coupled Climate Models National Center for Atmospheric Research,* Boulder, Colorado

    E-Print Network [OSTI]

    Dai, Aiguo

    Precipitation Characteristics in Eighteen Coupled Climate Models AIGUO DAI National Center) ABSTRACT Monthly and 3-hourly precipitation data from twentieth-century climate simulations by the newest-related variability, convective versus stratiform precipitation ratio, precipitation frequency and intensity

  17. Multi-Characteristic Status Situations and the Determination of Power and Prestige Order

    E-Print Network [OSTI]

    Berger, Joseph; Fisek, M. Hamit; Crosbie, Paul V

    2015-08-06

    -Type text/plain; charset=UTF-8 Multi-Characteristic Status Situations and the Determination of Power and Prestige Orders* by Joseph Berger Stanford University M. Hamit Fisek Stanford University Paul V. Crosbie University of Arizona Technical... 0215). This is the second report on a set of experiments concerned with the determination of power and prestige orders in multi-characteristic status situations. Portions of our original report (Berger and Fisek, 1970) are repeated here...

  18. The effects of laser irradiation on the electrical characteristics of monolithic resistors

    E-Print Network [OSTI]

    Small, James Edwin

    1980-01-01

    THE EFFECTS OF LASER IRRADIATION ON THE ELECTRICAL CHARACTERISTICS OF MONOLITHIC RESISTORS A Thesis JAMES EDWIN S~LALL Submitted to the Graduate College of Texas A&K University in partial fulfillment of the requirement for the degree... of MASTER OF' SCIENCE Hay 1980 &'major Subject: Electrical Engineering THE EFFECTS OF LASER IRRADIATION ON THE ELECTRICAL CHARACTERISTICS OF MONOLITHIC RESISTORS A Thesis by JAMES EDr IN SMALL Approved as to content by: (Chairman o Committee) (He...

  19. Presence, growth and survival characteristics of Yersinia enterocolitica in oysters, shrimp and crab

    E-Print Network [OSTI]

    Staller, Sue

    1979-01-01

    PRESENCE, GROWTH AND SURVIVAL CHARACTERISTICS OF YERSI NZA ENTEROCOLITI CA IN OYSTERS, SHRIMP AND CRAB A Thesis by SUE STALLER Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree... of MASTER OF SCIENCE May 1979 Major Subject: Food Science and Technology PRESENCE, GROWTH AND SURVIVAL CHARACTERISTICS OF YERSZNZA ENTEROCOLZTZCA IN OYSTERS, SHRIMP AND CRAB A Thesis by SUE STALLER Approved as to style and content by: Chairman o f...

  20. Characteristics of various methods for solving steady state and unsteady state distillation problems

    E-Print Network [OSTI]

    Coco, Vincent Joseph

    1965-01-01

    CHARACTERISTICS OF VARIOUS METHODS FOR SOLVING STEADY STATE AND UNSTEADY STATE DISTILLATION PROBLEMS A Thesis By VINCENT JOSEPH COCO Submitted to the Graduate College of the Texas ASM University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE May 1965 Major Subject: Chemical Engineering CHARACTERISTICS OF VARIOUS METHODS FOR SOLVING STEADY STATE AND UNSTEADY STATE DISTILLATION PROBLEMS A Thesis By VINCENT JOSEPH COCO Approved as to style and content by...

  1. Effect of interfacial oxide layers on the current-voltage characteristics of Al-Si contacts

    E-Print Network [OSTI]

    Nishizono, Taira

    1976-01-01

    EFFECT OF INTERFACIAL OXIDE LAYERS ON THE CURRENT-VOLTAGE CHARACTERISTICS OF Al-Si CONTACTS A Thesis by TAIRA NISHIZONO Submitted to the Graduate College of Texas A&Yi University in partial fulfillment of the requirement for the degree... of MASTER OF SCIENCE December 1976 Major Subject: Electrical Engineering EFFECTS OF INTERFACIAL OXIDE LAYERS ON THE CURRENT-VOLTAGE CHARACTERISTICS OF Al-Si CONTACTS A Thesis by TAIRA NISHIZONO Approved. as to style and content by: Chairman...

  2. The Texas Wholesale Meat Distribution Industry -- Structure, Operational Characteristics and Competitive Practices.

    E-Print Network [OSTI]

    Dietrich, Raymond A.

    1976-01-01

    Bulletin] The Texas Wholesale Meat Distribution Industry - Structure, Operational Characteristics, and Competitive Practices Mentior, of a tradehark or a proprietary product does not constitute a guarantee or warranty of the product by The Texas..., religion, sex, age, or national origin. [Blank Page in Original Bulletin] CONTENTS Page Highlights Introduction ............9..8...v..000..000*.00.00.t8 1 Structural Characteristics of the U . S . and Texas Wholesale Meat Industry...

  3. A study of the bond characteristics of concrete reinforcing bars coated with epoxy compounds

    E-Print Network [OSTI]

    Desai, Indravadan S

    1964-01-01

    A STUDY OF THE BOND CHARACTERISTICS OF CONCRETE REINFORCING BARS COATED WITH EPCKY COMPOUNDS A Thesis By Indravadan S. Desai Submitted to the Graduate College of the Texas A&M University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE May, 1964 Major Subject: Civil Engineering A STUDY OF THE BOND CHARACTERISTICS OF CONCRETE REINFORCING BARS COATED WITH EPOXY COMPOUNDS A Thesis By Indravadan S. Desai Approved as to style and content by: (Chairman...

  4. Characteristics of the Department of Energy's Building Inventory 2005-2010

    SciTech Connect (OSTI)

    Loper, Susan A.; Sandusky, William F.

    2012-02-01

    The Pacific Northwest National Laboratory (PNNL) as part of their on-going support to the Department of Energy's Federal Energy Management Program (FEMP) was asked to analyze special building data for an agency to gain a better understanding of the portfolio characteristics to help better shape implementation of their alternative financing activities. This report provides information for one agency, Department of Energy (DOE), and how those characteristics have changed over time.

  5. Strength and failure characteristics of sandstones under moderate pore and confining pressures

    E-Print Network [OSTI]

    Neathery, Orphie

    1965-01-01

    PROCEDURE 31 Selection and Preparation of Samples 31 Procedure for Triaxial Tests 32 Physical Property Determination 33 RESULTS 36 Strength and Failure Characteristics 36 Influence of Physical Properties on Strength Characteristics 45 C ON C L US IO... submerged in the oil until the time of their testing. The remaining unsaturated plugs from each sandstone sample were kept for porosity, permeability, sonic velocity and capillary pressure determinations. 32 Procedure for Triaxial Tests In the triaxial...

  6. Relative radiant heat absorption characteristics of two types of mirror shields and a polished aluminum shield

    E-Print Network [OSTI]

    Herron, Steven Douglas

    1973-01-01

    RELATIVE RADIANT HEAT ABSORPTION CHARACTERISTICS OF TWO TYPES OF MIRROR SHIELDS AND A POLISHED ALUMINUM SHIELD A Thesis by STEVEN DOUGLAS HERRON Submitted to the Graduate College of Texas A&M University in partial fulfillment... of the requirement for the degree of MASTER OF SCIENCE August 1973 Major Subject: Industrial Hygiene RELATIVE RADIANT HEAT ABSORPTION CHARACTERISTICS OF TWO TYPES OF MIRROR SHIELDS AND A POLISHED ALUMINUM SHIELD A Thesis by STEVEN DOUGLAS HERRON Approved...

  7. Mechanical characteristics of folds in Upper Cretaceous strata in the Disturbed Belt of northwestern Montana

    E-Print Network [OSTI]

    Gilbert, Pat Kader

    1974-01-01

    MECHANICAL CHARACTERISTICS OF FOLDS IN UPPER CRETACEOUS STRATA IN THE DISTURBED BELT OF NORTHWESTERN MONTANA A Thesis by PAT KADER GILBERT Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE May 1974 Major Subject: Geology MECHANICAL CHARACTERISTICS OF FOLDS IN UPPER CRETACEOUS STRATA IN THE DISTURBED BELT OF NORTHWESTERN MONTANA A Thesis by PAT KADER GILBERT Approved as to style and content by: (Chairman...

  8. Characteristic initial data and smoothness of Scri. I. Framework and results

    E-Print Network [OSTI]

    Piotr T. Chru?ciel; Tim-Torben Paetz

    2014-09-23

    We analyze the Cauchy problem for the vacuum Einstein equations with data on a complete light-cone in an asymptotically Minkowskian space-time. We provide conditions on the free initial data which guarantee existence of global solutions of the characteristic constraint equations. We present necessary-and-sufficient conditions on characteristic initial data in $3+1$ dimensions to have no logarithmic terms in an asymptotic expansion at null infinity.

  9. Mechanical Harvesting of Cotton as Affected by Varietal Characteristics and Other Factors.

    E-Print Network [OSTI]

    Smith, H. P. (Harris Pearson)

    1939-01-01

    good middlini (SGM). 3. Good middling (GM). 4. Strict middling (SM). 5. Middling (M). 6. Strict low m~ddling (SLM). 7. Low m~ddling (.LM). 8. Strict good ordlnary (SGO). 9. Good ordinary (GO). tSP.-Spotted condlt~on of the lint. Variety Ducona... As Affected By Varietal Characteristics And Other Factors - AGRICULTURAL AND MECHANICAL COLLEGE OF TEXAS T. 0. WALTON, President [Blank Page in Original Bulletin] The influence of cotton's varietal characteristics on the efficiency of mechanical...

  10. Determination of the neutron fluence, the beam characteristics and the backgrounds at the CERN-PS TOF facility

    E-Print Network [OSTI]

    CERN. Geneva. ISOLDE and Neutron Time-of-Flight Experiments Committee; Andriamonje, Samuel A; Angelopoulos, Angelos; Assimakopoulos, P A; Audouin, L; Badurek, G; Bakos, G A; Bauge, E; Baumann, P; Beer, H; Benlliure, J; Benlloch, J M; Boffi, S; Boiano, A; Borcea, C; Brusegan, A; Buono, S; Calvio, F; Cambronero, C F; Cano-Ott, D; Cennini, P; Charpak, Georges; Chepel, V Yu; Colonna, N; Corts, G; Corvi, F; Cura, J L; Czajkowski, S; Dasso, C H; David, S; De Blas, A; Delaroche, J P; Del Moral, R; De Poli, M; Della Mea, G; Derr, J; Dez, S; Dolfini, R; Durn, I; Eleftheriadis, C; Embid-Segura, M; Farget, F; Ferreira-Marques, R; Ferrari, A; Furman, W I; Goverdovski, A A; Guamegna, F; Griesmayer, E; Grudzevich, O; Guber, K H; Gundrorin, N; Gunsing, F; Hage-Ali, M; Haight, B; Harissopoulos, S V; Heil, M; Ioannides, K G; Ioannou, P; Isaev, S; Jastrzebski, J J; Jericha, E; Kadi, Y; Kppeler, F K; Kalfas, C A; Karamanis, D; Kazakov, L; Kelic, A; Ketlerov, V; Kitis, G; Khler, P E; Konovalov, V; Kopatch, I; Kossionides, E; Lacoste, V; Leal, L C; Leeb, H; Leprtre, A; Lopes, M I; Lozano, M; Martnez-Val, J M; Mastinu, P F; Matteucci, M F; Matveev, D V; Mengoni, A; Meunier, R; Milazzo, P M; Mnguez-Torres, E; Mitrofanov, V P; Molina, A; Mordenti, R; Mutti, P; Napiorkowski, P J; Nicolis, N G; Nolte, R; Oberhummer, Heinz; Ordine, A; Pacati, F D; Pakou, A A; Papadopoulos, I M; Papaevangelou, T; Paradelis, T; Pavlik, A; Pavlopoulos, P; Perlado, J M; Piera, M; Piksaikin, V M; Plag, R; Plompen, A; Poch, A; Policarpo, Armando; Popov, A; Popov, Yu; Pretel, C; Quaranta, A; Quesada, J M; Radermacher, E; Radici, M; Raman, S; Rapp, W; Rauscher, T; Reifarth, R; Rigato, V; Rubbia, Carlo; Rudolf, G; Rullhusen, P; Rundberg, B; Sakelliou, L; Saldaa, F; Santos, D M; Sanz, J; Savvidis, E; Savvidis, S; Schuhmacher, H; Sedyshev, P V; Serov, D; Stphan, C; Tagliente, G; Tan, J L; Tapia, C; Tassan-Got, L; Terrani, M; Terychny, R; Tsagas, N; Tzima, A; Vardaci, E; Ventura, A; Villamarn, D; Vlachoudis, V; Voinov, A V; Voss, F; Weigmann, H; Wendler, H; Wiescher, M C; Wisshak, K; Zeinalov, S S

    2000-01-01

    Determination of the neutron fluence, the beam characteristics and the backgrounds at the CERN-PS TOF facility

  11. A parameter study to optimizing scintillator characteristics for increased sensitivity in nuclear nonproliferation, safeguards, and security based applications

    SciTech Connect (OSTI)

    Shy, Daniel

    2014-08-01

    A parameter study to optimizing scintillator characteristics for increased sensitivity in nuclear nonproliferation, safeguards, and security based applications

  12. Study of the Spectral Characteristics and the Nonlinear Evolution of ELMs on JET using a Wavelet Analysis

    E-Print Network [OSTI]

    Study of the Spectral Characteristics and the Nonlinear Evolution of ELMs on JET using a Wavelet Analysis

  13. Paper Number: 024168 An ASAE Meeting Presentation

    E-Print Network [OSTI]

    Kentucky, University of

    and relatively low-cost monitoring unit (PMU) for continuous measurement of ammonia and carbon dioxide in CAFO-approved measurement method. The PMU utilizes sampling and purging cycles to overcome the sensor saturation characteristic of electro-chemical NH3 sensors. Preliminary comparative results show that performance of the PMU

  14. Studies of the Excited State Dynamics of N2O2 by Dissociative Photodetachment of N2O2 Runjun Li and Robert E. Continetti*

    E-Print Network [OSTI]

    Continetti, Robert E.

    to their potential importance as intermediates in catalytic reduction processes1,2 and as potential energetic materials.3 The weakly bound ground- state dimer of nitric oxide, (NO)2, has been extensively investigated The oxides of nitrogen play an important role in atmospheric chemistry and have received attention owing

  15. Can N 2 O stable isotopes and isotopomers be useful tools to characterize sources and microbial pathways of N 2 O production and consumption in tropical soils?

    E-Print Network [OSTI]

    2011-01-01

    from tropical forest soils, Global Biogeochem. Cycles, 14,2 O source partitioning in soils: recent progress, remaininga temperate grassland soil after fertiliser application,

  16. Can N 2 O stable isotopes and isotopomers be useful tools to characterize sources and microbial pathways of N 2 O production and consumption in tropical soils?

    E-Print Network [OSTI]

    2011-01-01

    20632, Caracas 1020?A, Venezuela. S. Park, Department ofTierra Nueva, Gurico State, Venezuela). The statisticallyLaboratory, IVIC, Caracas, Venezuela. Department of Earth

  17. An ALS handbook: A summary of the capabilities and characteristics of the advanced light source

    SciTech Connect (OSTI)

    Not Available

    1989-04-01

    This booklet aims to provide the prospective user of the Advanced Light Source with a concise description of the radiation a researcher might expect at his or her experimental station. The focus is therefore on the characteristics of the light that emerges from insertion devices and bending magnets and on how components of the beam lines further alter the properties of the radiation. The few specifications and operating parameters of the ALS storage ring that are of interest are those that directly determine the radiation characteristics. Sections 4 through 5 are primarily devoted to summary presentations, by means of performance plots and tabular compilations, of radiation characteristics at the ALS--spectral brightness, flux, coherent power, resolution, etc.--assuming a representative set of three undulators and one wiggler and a corresponding set of four beam lines. As a complement to these performance summaries, Section 1 is a general introductory discussion of synchrotron radiation and the ALS, and Section 2 discusses the properties of the stored electron beam that affect the radiation. Section 3 then provides an introduction to the characteristics of synchrotron radiation from bending magnets, wigglers, and undulators. In addition, Section 5 briefly introduces the theory of diffraction-grating and crystal monochromators. As compared with previous editions of this booklet, the performance plots and tabular compilations of the ALS radiation characteristics are now based on conservative engineering designs rather than preliminary physics designs.

  18. Subsurface water flow simulated for hill slopes with spatially dependent soil hydraulic characteristics

    SciTech Connect (OSTI)

    Sharma, M.L.; Luxmoore, R.J.; DeAngelis, R.; Ward, R.C.; Yeh, G.T.

    1987-08-01

    Water flow through hill slopes consisting of five soil layers, with varying spatial dependence in hydraulic characteristics in the lateral plane was simulated by solving Richards' equation in three dimensions under varying rainfall intensities and for two complexities of terrain. By concepts of similar media the variability in soil hydraulic characteristics was expressed by a single dimensionless parameter, the scaling factor ..cap alpha... The moments of log normally distributed ..cap alpha.. were set as: Mean = 1.0 and standard deviation = 1.0. Four cases of spatial dependence of ..cap alpha.. in the lateral plane were selected for simulation, using exponential variogram functions ranging in spatial structure from random (no spatial dependence) to large dependence (large correlation lengths). The simulations showed that the rates of subsurface flow from the 30/sup 0/ hillslope, during and following rainfall, were significantly enhanced with an increase in spatial dependence. Subsurface drainage was also increased with increases in rainfall intensity and slop complexity. For hill slopes the relative effects of spatial dependence in soil hydraulic characteristics was smaller with 30/sup 0/ horizontal pitching than without pitching. Hill slopes with a random distribution of hydraulic characteristics provided greater opportunity for soil units with differing water capacities to interact than in cases with spatially correlated distributions. This greater interaction is associated with a greater lag in subsurface flow generation. These studies illustrate some of the expected effects of spatial dependence of soil hydraulic characteristics of the integrated hydrologic response of land areas.

  19. Effect of magnetic field on breakdown voltage characteristics of a multigap pseudospark

    SciTech Connect (OSTI)

    Sriram, D.; Jain, K.K. [Institute for Plasma Research, Bhat, Gandhinagar 382428 (India)] [Institute for Plasma Research, Bhat, Gandhinagar 382428 (India)

    1997-06-01

    An experimental investigation of the effect of magnetic field on the breakdown voltage characteristics of a multigap pseudospark device, with hydrogen gas, in a hollow anode{endash}cathode, as well as a hollow cathode{endash}anode configuration, is presented. The breakdown pressure at a particular discharge voltage increases with the increase in the applied axial magnetic field, and the magnitude of the increase is more pronounced at lower discharge voltages causing a right shift to the characteristic discharge curve in both the configurations. Application of a transverse magnetic field also resulted in a shift of the characteristic discharge curve towards the right. The observed results are compared and discussed with that found for parallel electrode geometry. {copyright} {ital 1997 American Institute of Physics.}

  20. Three-phase permeabilities and other characteristics of 260-mD fired Berea

    SciTech Connect (OSTI)

    Maloney, D.; Brinkmeyer, A.

    1992-04-01

    A laboratory investigation was conducted to determine relative permeabilities and other characteristics of a 260-mD fired Berea sandstone. The mineralogical and physical characteristics of the sample were characterized by XRD tests, thin section analyses, mercury injection tests, and centrifuge capillary pressure and wettability tests. Two-phase oil/water relative permeabilities were measured under several stress conditions. Resistivity characteristics of the sample were also evaluated during several of the oil/water tests. Oil/gas and gas/water relative permeabilities were measured during steady-state tests. Three-phase steady-state oil/gas/water tests were performed for six DDI saturation trajectories (decreasing brine and oil saturations, increasing gas saturation) in which the sample was not cleaned between saturation trajectories.

  1. Dynamic voltage-current characteristics for a water jet plasma arc

    SciTech Connect (OSTI)

    Yang Jiaxiang; Lan Sheng; Xu Zuoming

    2008-05-05

    A virtual instrument technology is used to measure arc current, arc voltage, dynamic V-I characteristics, and nonlinear conductance for a cone-shaped water jet plasma arc under ac voltage. Experimental results show that ac arc discharge mainly happens in water vapor evaporated from water when heated. However, due to water's cooling effect and its conductance, arc conductance, reignition voltage, extinguish voltage, and current zero time are very different from those for ac arc discharge in gas work fluid. These can be valuable to further studies on mechanism and characteristics of plasma ac discharge in water, and even in gas work fluid.

  2. Tunneling characteristics in chemical vapor deposited graphenehexagonal boron nitridegraphene junctions

    SciTech Connect (OSTI)

    Roy, T.; Hesabi, Z. R.; Joiner, C. A.; Vogel, E. M. [School of Materials Science and Engineering, Georgia Institute of Technology, 771 Ferst Drive, Atlanta, Georgia 30332 (United States); Liu, L.; Gu, G. [Department of Electrical Engineering and Computer Science, University of Tennessee, 1520 Middle Drive, Knoxville, Tennessee 37996 (United States); Barrera, S. de la; Feenstra, R. M. [Department of Physics, Carnegie Mellon University, 5000 Forbes Ave., Pittsburgh, Pennsylvania 15213 (United States); Chakrabarti, B. [School of Materials Science and Engineering, Georgia Institute of Technology, 771 Ferst Drive, Atlanta, Georgia 30332 (United States); Department of Materials Science and Engineering, University of Texas at Dallas, 800 West Campbell Rd., Richardson, Texas 75080 (United States)

    2014-03-24

    Large area chemical vapor deposited graphene and hexagonal boron nitride was used to fabricate graphenehexagonal boron nitridegraphene symmetric field effect transistors. Gate control of the tunneling characteristics is observed similar to previously reported results for exfoliated graphenehexagonal boron nitridegraphene devices. Density-of-states features are observed in the tunneling characteristics of the devices, although without large resonant peaks that would arise from lateral momentum conservation. The lack of distinct resonant behavior is attributed to disorder in the devices, and a possible source of the disorder is discussed.

  3. The effects of laser energy on modelling the characteristics of p-n diodes

    E-Print Network [OSTI]

    Severin, William Alfred

    1984-01-01

    THE EFFECTS OF LASER ENERGY ON MODELLING THE CHARACTERISTICS OF P-N DIODES A Thesis by WILLIAM ALFRED SEVERIN Submitted to the Graduate College of Texas A&M University in partial fulfullment of the requirements for the degree of MASTER... OF SCIENCE August 1984 Ma jor Sub]ect: Electrical Engineering THE EFFECTS LASER ENERGY ON MODELLING THE CHARACTERISTICS OF P-N DIODES A Thesis WILLIAM ALFRED SEVERIN Approved as to style and content by: (Chairma of Committee) Dr. Phillip E. Allen...

  4. The effects of storage on starch characteristics and chip quality of Texas Irish potatoes

    E-Print Network [OSTI]

    McDonald, Roy E

    1966-01-01

    THE EFFECTS OF STORAGE QN STARCH CHARACTERISTICS AND CHIP QUALITY OF TEXAS IRISH POTATOES A Thesis Roy Eric McDonald Submitted to the Graduate College of' the Te~s AEcM University in partial fulfillment of the requirements for the degree... of MASTER OF SCIENCE May& 1966 Major Subject: Horticulture THE EFFECTS OF STORAGE ON STARCH CHARACTERISTICS AND CHIP QUALITY OF TEXAS IRISH POTATOES A Thesis by Roy Eric McDonald Approved as to style and content by: (Chairman oi' ttee) (Heag...

  5. Electrical characteristics of Ni Ohmic contact on n-type GeSn

    SciTech Connect (OSTI)

    Li, H.; Cheng, H. H., E-mail: hhcheng@ntu.edu.tw [Center for Condensed Matter Sciences and Graduate Institute of Electronics Engineering, National Taiwan University, Taipei 106, Taiwan (China); Lee, L. C.; Lee, C. P. [Center for Nano Science and Technology, National Chiao Tung University, Hsinchu 300, Taiwan (China); Su, L. H.; Suen, Y. W. [Department of Physics and Institute of Nano Science, National Chung Hsing University, Taichung 402, Taiwan (China)

    2014-06-16

    We report an investigation of the electrical and material characteristics of Ni on an n-type GeSn film under thermal annealing. The current-voltage traces measured with the transmission line method are linear for a wide range of annealing temperatures. The specific contact resistivity was found to decrease with increasing annealing temperature, followed by an increase as the annealing temperature further increased, with a minimum value at an annealing temperature of 350?C. The material characteristics at the interface layer were measured by energy-dispersive spectrometer, showing that an atomic ratio of (Ni)/(GeSn)?=?1:1 yields the lowest specific contact resistivity.

  6. Characteristics of irradiation creep in the first wall of a fusion reactor

    SciTech Connect (OSTI)

    Coghlan, W.A.; Mansur, L.K.

    1981-01-01

    A number of significant differences in the irradiation environment of a fusion reactor are expected with respect to the fission reactor irradiation environment. These differences are expected to affect the characteristics of irradiation creep in the fusion reactor. Special conditions of importance are identified as the (1) large number of defects produced per pka, (2) high helium production rate, (3) cyclic operation, (4) unique stress histories, and (5) low temperature operations. Existing experimental data from the fission reactor environment is analyzed to shed light on irradiation creep under fusion conditions. Theoretical considerations are used to deduce additional characteristics of irradiation creep in the fusion reactor environment for which no experimental data are available.

  7. Investigation of Flow Characteristics in an Airlift-Driven Raceway Reactor for Algae Cultivation

    E-Print Network [OSTI]

    Investigation of Flow Characteristics in an Airlift-Driven Raceway Reactor for Algae Cultivation are the most common choice for outdoor algae cultivation due to their low cost relative to enclosed. Algae require adequate mixing in order to maximize exposure to essential nutrients for growth

  8. Surface characteristics and corrosion resistance properties of TiNi shape memory alloy coated with Ta

    E-Print Network [OSTI]

    Zheng, Yufeng

    for electroplated, crimped, or swaged metal bands that can be abrasive, loosen, crack, or fall off. For coatingSurface characteristics and corrosion resistance properties of TiNi shape memory alloy coated coated with tantalum by the arc ion plating method with the aim to improve their radiopacity. Surface

  9. RESEARCH ARTICLE Dynamic wind loads and wake characteristics of a wind turbine

    E-Print Network [OSTI]

    Hu, Hui

    installed in onshore or/and offshore wind farms in order to meet the 20% electricity generation goal. WindRESEARCH ARTICLE Dynamic wind loads and wake characteristics of a wind turbine model in an atmospheric boundary layer wind Hui Hu Zifeng Yang Partha Sarkar Received: 16 August 2011 / Revised: 1

  10. RF propagation in an HVAC duct system: impulse response characteristics of the channel

    E-Print Network [OSTI]

    Stancil, Daniel D.

    RF propagation in an HVAC duct system: impulse response characteristics of the channel Pavel V, the heating, ventilation, and air conditioning (HVAC) duct system in buildings is a complex network of hollow at RF and microwave frequencies of com- mon interest. HVAC ducts can be used as a wireless communication

  11. Oil Bodies and Oleosins in Physcomitrella Possess Characteristics Representative of Early Trends

    E-Print Network [OSTI]

    Gent, Universiteit

    Oil Bodies and Oleosins in Physcomitrella Possess Characteristics Representative of Early Trends oleosin genes. Microscopy examination of Physcomitrella revealed that oil bodies (OBs) were abundant; and bacteria. Among all these lipid droplets, oil bodies (OBs) in seeds are the most prominent and have been

  12. Study of the fast reaction characteristics of aluminized PETN explosive powders

    SciTech Connect (OSTI)

    Hu Dong; Sun Zhumei

    1996-05-01

    The fast reaction characteristics of aluminized PETN (pentaerythrite tetranitrate) explosive powders have been studied successfully by means of a spectrum-detecting and recovery technique. The results show that the appropriate particle size and content of aluminium powder in the aluminized PETN explosive powders are 44 {micro}m and 33%, respectively.

  13. On the effect of demographic characteristics on the formulation of solid waste charging policy

    E-Print Network [OSTI]

    Columbia University

    On the effect of demographic characteristics on the formulation of solid waste charging policy A. Trends in municipal solid waste charging policies Municipal waste services constitute a very important component in the waste management chain. The contin- uously growing waste production and the increased

  14. STATUS OF MUNICIPAL SOLID WASTE GENERATION IN KERALA AND THEIR CHARACTERISTICS

    E-Print Network [OSTI]

    Columbia University

    STATUS OF MUNICIPAL SOLID WASTE GENERATION IN KERALA AND THEIR CHARACTERISTICS Dr. R. Ajayakumar the generation of municipal solid waste (MSW) in Kerala beyond the assimilative of capacity of our environment and management capacity of the existing waste management systems. Therefore, there is an urgent necessity

  15. Evaluating specific error characteristics of microwave-derived cloud liquid water products

    E-Print Network [OSTI]

    Christopher, Sundar A.

    of cloud LWP products globally using concurrent data from visible/ infrared satellite sensors. The approachEvaluating specific error characteristics of microwave-derived cloud liquid water products Thomas J microwave satellite measurements. Using coincident visible/infrared satellite data, errors are isolated

  16. Estimation of tropical forest structural characteristics using large-footprint lidar

    E-Print Network [OSTI]

    Weishampel, John F.

    Estimation of tropical forest structural characteristics using large-footprint lidar Jason B in identifying the amount of carbon in terrestrial vegetation pools and is central to global carbon cycle studies. Although current remote sensing techniques recover such tropical forest structure poorly, new large-footprint

  17. Physical Characteristics of the Dual Phase Region in Mixtures of Recycled Polystyrene/Curbside Tailings Materials

    E-Print Network [OSTI]

    Physical Characteristics of the Dual Phase Region in Mixtures of Recycled Polystyrene/Curbside Tailings Materials R.W. Renfree, T.J. Nosker, and D.R. Morrow The Center for Plastics Recycling Research and Lee University Introduction Virtually all studies of polymer mixtures made by the processing of virgin

  18. A new account of Ross Sea waters: characteristics, volumetrics, and variability

    E-Print Network [OSTI]

    Stover, Christina Lee

    2007-09-17

    . The characteristic â??Vâ? shape of the Antarctic Slope Front over the western Ross Sea is indicated by a narrow stream of thickened AASW. The entire AASW layer shoals from east to west. Two major shoreward inflows of Lower Circumpolar Deep Water (LCDW...

  19. Effect of initial physical characteristics on sludge compost performance Anne Trmier1,2,*

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    Effect of initial physical characteristics on sludge compost performance Anne Trmier1,2,* ,Ccile an active microbial activity quickly developing stabilizing thermophilic temperatures during the composting particle surface area and porosity. To optimize the biodegradation of a sludge compost recipe

  20. Performance Characteristics of Cathode Materials for Lithium-Ion Batteries: A Monte Carlo Strategy

    E-Print Network [OSTI]

    Subramanian, Venkat

    Performance Characteristics of Cathode Materials for Lithium-Ion Batteries: A Monte Carlo Strategy to study the performance of cathode materials in lithium-ion batteries. The methodology takes into account. Published September 26, 2008. Lithium-ion batteries are state-of-the-art power sources1 for por- table

  1. Pressure drop and heat transfer characteristics of boiling water in sub-hundred micron channel

    SciTech Connect (OSTI)

    Bhide, R.R.; Singh, S.G.; Sridharan, Arunkumar; Duttagupta, S.P.; Agrawal, Amit [Department of Mechanical Engineering, Indian Institute of Technology Bombay, Powai, Mumbai 400 076 (India)

    2009-09-15

    The current work focuses on the pressure drop, heat transfer and stability in two phase flow in microchannels with hydraulic diameter of less than one hundred microns. Experiments were conducted in smooth microchannels of hydraulic diameter of 45, 65 {mu}m, and a rough microchannel of hydraulic diameter of 70 {mu}m, with deionised water as the working fluid. The local saturation pressure and temperature vary substantially over the length of the channel. In order to correctly predict the local saturation temperature and subsequently the heat transfer characteristics, numerical techniques have been used in conjunction with the conventional two phase pressure drop models. The Lockhart-Martinelli (liquid-laminar, vapour-laminar) model is found to predict the two phase pressure drop data within 20%. The instability in two phase flow is quantified; it is found that microchannels of smaller hydraulic diameter have lesser instabilities as compared to their larger counterparts. The experiments also suggest that surface characteristics strongly affect flow stability in the two phase flow regime. The effect of hydraulic diameter and surface characteristics on the flow characteristics and stability in two phase flow is seldom reported, and is of considerable practical relevance. (author)

  2. Migration Characteristics of Prostate Cancer Cells in Response to Epidermal Growth Factor (EGF)

    E-Print Network [OSTI]

    Chiao, Jung-Chih

    Migration Characteristics of Prostate Cancer Cells in Response to Epidermal Growth Factor (EGF) S. The main cause of mortality is metastasis of cancer cells from primary sites to secondary sites-efficient polydimethylsiloxane (PDMS)-based microfluidic device capable of monitoring the dynamics of cell migration in response

  3. Some characteristics of formula sets in the whole of p-adics.

    E-Print Network [OSTI]

    Some characteristics of formula sets in the whole of p formula set if it can be defined by some formula of predicate calculus in the two-sorted language of valued fields. Let M, N be two formula subsets of a valued field K. They are (formula) equivalent

  4. Fundamental Study of the Oxidation Characteristics and Pollutant Emissions of Model Biodiesel Fuels

    SciTech Connect (OSTI)

    Feng, Q.; Wang, Y. L.; Egolfopoulos, Fokion N.; Tsotsis, T. T.

    2010-07-18

    In this study, the oxidation characteristics of biodiesel fuels are investigated with the goal of contributing toward the fundamental understanding of their combustion characteristics and evaluating the effect of using these alternative fuels on engine performance as well as on the environment. The focus of the study is on pure fatty acid methyl-esters (FAME,) that can serve as surrogate compounds for real biodiesels. The experiments are conducted in the stagnation-flow configuration, which allows for the systematic evaluation of fundamental combustion and emission characteristics. In this paper, the focus is primarily on the pollutant emission characteristics of two C{sub 4} FAMEs, namely, methyl-butanoate and methyl-crotonate, whose behavior is compared with that of n-butane and n-pentane. To provide insight into the mechanisms of pollutant formation for these fuels, the experimental data are compared with computed results using a model with consistent C1-C4 oxidation and NOx formation kinetics.

  5. Performance Characteristics of OpenMP Language Constructs on a Manycoreonachip Architecture

    E-Print Network [OSTI]

    Gao, Guang R.

    Performance Characteristics of OpenMP Language Constructs on a Manycoreonachip Architecture manycoreonachip architectures present massive onchip parallelism through hardware support chip parallelism to achieve highly sustainable performance, suitable program ming models are needed

  6. Thailand Public Web Services Registry in Web 2.0 Characteristics 123 . , 40002,

    E-Print Network [OSTI]

    Runapongsa, Kanda

    2.0 Thailand Public Web Services Registry in Web 2.0 Characteristics 1 , 1 , 1 1 , , 123.noom@gmail.com 2.0 AJAX : , UDDI, , 2.0 Abstract A Web service is a software system designed to support interoperable machine-to-machine interaction over a network using XML . Web Services developers usually want

  7. American Institute of Aeronautics and Astronautics An Experimental Investigation on the Wake Characteristics behind

    E-Print Network [OSTI]

    Hu, Hui

    Characteristics behind a Novel Twin-Rotor Wind Turbine Zhenyu Wang1 , Ahmet Ozbay2 , Wei Tian3 , Anupam Sharma4 of an innovative twin-rotor wind turbine (TRWT) in comparison with those of a conventional single-rotor wind turbine (SRWT). The comparative study was conducted in a large-scale Aerodynamic/Atmospheric Boundary

  8. Incorporating spectral characteristics of Pc5 waves into three-dimensional radiation belt

    E-Print Network [OSTI]

    Elkington, Scot R.

    Incorporating spectral characteristics of Pc5 waves into three-dimensional radiation belt modeling frequency range on radiation belt electrons in a compressed dipole magnetic field is examined-dimensional radiation belt modeling and the diffusion of relativistic electrons, J. Geophys. Res., 110, A03215, doi:10

  9. Original Contribution Effect Modification by Community Characteristics on the Short-term Effects of

    E-Print Network [OSTI]

    Dominici, Francesca

    , number of ozone monitors, weather, and use of air conditioning. Their study included data on 98 US urban pollution. air conditioning; air pollution; continental population groups; income; mortality; ozone, use of air conditioning, population characteristics, or other factors. Given the highly reactive

  10. Conductance characteristics between a normal metal and a clean superconductor carrying a supercurrent

    E-Print Network [OSTI]

    Zhang, DG; Ting, CS; Hu, Chia-Ren.

    2004-01-01

    The effect of a transverse supercurrent I-s up to the thermodynamic critical current on the low-temperature conductance characteristics between a normal metal N and a clean s- or d-wave superconductor (S) is theoretically investigated, covering from...

  11. Investigation of the Radio Frequency Characteristics of CMOS Electrostatic Discharge Protection Devices

    E-Print Network [OSTI]

    Anlage, Steven

    1 Investigation of the Radio Frequency Characteristics of CMOS Electrostatic Discharge Protection in logic levels. This paper presents a theoretical, numerical and experimental investigation of the radio microwave pulses cause state errors and unstable operating conditions in the circuit. In some devices

  12. Point Multiplication on Ordinary Elliptic Curves over Fields of Characteristic Three

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    . fnigel, westwoodg@cs.bris.ac.uk Abstract. In this paper we investigate the efficiency of cryptosystems. We give example timings for our operations and compare them with timings for curves in characteristic still seem to have received relatively little attention. In this investigation we look at ordinary

  13. Measurement of the exit characteristics of light from optical multimode plastic fibres

    E-Print Network [OSTI]

    Hebbeker, Thomas

    Measurement of the exit characteristics of light from optical multimode plastic fibres von Simon multimode plastic fibres are an essential part of many detectors used in modern particle physics experiments the functionality of the simulation software. #12;Contents 1 Introduction 1 2 Optical Multimode Plastic Fibres 5 2

  14. socP2P: P2P Content Discovery Enhancement by considering Social Networks Characteristics

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    socP2P: P2P Content Discovery Enhancement by considering Social Networks Characteristics Reza-- Content management appears as an essential requirement in order to deploy enhanced P2P networks. In P2P/nodes; therefore an efficient search mechanism is required. The proposed search algorithm in this paper, called socP

  15. Execution Characteristics of JustInTime Compilers Technical Report TR99071701

    E-Print Network [OSTI]

    John, Lizy Kurian

    Execution Characteristics of JustInTime Compilers Technical Report TR99071701 R@cse.psu.edu Abstract JustInTime (JIT) compilers interact with the Java Virtual Machine (JVM) at run time and compile appropriate bytecode sequences into native machine code. Loading and compilation time penalties are incurred

  16. Mechatronics 2: Part 3 Capture Motor Characteristics Copyright 2011 by Paul Oh

    E-Print Network [OSTI]

    Oh, Paul

    Mechatronics 2: Part 3 Capture Motor Characteristics Copyright 2011 by Paul Oh Hands-on Lab NXT mass cartm [Kg] NXT Brick Voltage [V] Table 1: Preliminary values #12;Mechatronics 2: Part 3 Capture clamping surfaceTie other end of fishing line to cart's crossbars #12;Mechatronics 2: Part 3 Capture

  17. Travel Characteristics of Marine Anglers Using Oil and Gas Platforms in the Central Gulf of Mexico

    E-Print Network [OSTI]

    Travel Characteristics of Marine Anglers Using Oil and Gas Platforms in the Central Gulf of Mexico patterns of avid marine anglers using the oil and gas structures off the Louisiana coast. Although and their fishing methods. Study Area In 1985, the National Research Council identified more than 3,100 oil and gas

  18. Emission characteristics and dynamics of the stagnation layer in colliding laser produced plasmas

    E-Print Network [OSTI]

    Harilal, S. S.

    Emission characteristics and dynamics of the stagnation layer in colliding laser produced plasmas P been investigated using time and space resolved optical emission spectroscopies and spectrally and angularly resolved fast imaging. The emission results highlight a difference in neutral atom and ion

  19. Emission characteristics and dynamics of C2 from laser produced graphite plasma

    E-Print Network [OSTI]

    Harilal, S. S.

    Emission characteristics and dynamics of C2 from laser produced graphite plasma S. S. Harilal, Riju 1996; accepted for publication 20 December 1996 The emission features of laser ablated graphite plume diagnostic technique. Time resolved optical emission spectroscopy is employed to reveal the velocity

  20. Characteristics of chars produced from lignites by pyrolysis at 808C following

    E-Print Network [OSTI]

    Characteristics of chars produced from lignites by pyrolysis at 808C following rapid heating heating up at 8 x 103'C/s. Following pyrolysis, the chars were rapidly cooled - at about 3 x 104"C/s. Weight losses were measured as a function of pyrolysis time. The following measure- ments were made