Sample records for moves saturated natural

  1. DualSamplingRate Moving Horizon Control of a Class of Linear Systems with Input Saturation and Plant Uncertainty --

    E-Print Network [OSTI]

    Dual­Sampling­Rate Moving Horizon Control of a Class of Linear Systems with Input Saturation­sampling­rate moving horizon control scheme for a class of linear, continuous­time plants with strict input saturation, it is not computed by a simple linear feedback law, but as a solution of an optimal control problem. As a result

  2. Dual-Sampling-Rate Moving Horizon Control of a Class of Linear Systems with Input Saturation and

    E-Print Network [OSTI]

    Dual-Sampling-Rate Moving Horizon Control of a Class of Linear Systems with Input Saturation horizon control scheme for a class of linear, continuous-time plants with strict input saturation horizon control, robust, fast sampling, stability, linear sys- tems, input constraints 1 Introduction

  3. Moving

    Broader source: Energy.gov [DOE]

    Moving Labor InformationOur team provides office relocations and reshuffles, office pre-renovation moves, furniture and equipment delivery and pick-up for turn-in, set-up of exhibits or venue for...

  4. Energy Department Moves Forward on Alaska Natural Gas Pipeline...

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

    guarantee program to encourage the construction of a pipeline that will bring Alaskan natural gas to the continental United States. The pipeline will provide access to Alaska's...

  5. Moving Toward Exclusive Tribal Autonomy over Lands and Natural Resources

    E-Print Network [OSTI]

    Leeds, Stacy L.

    2006-01-01T23:59:59.000Z

    (implying that when land is held in fee by a non- Indian there is a presumption against tribal jurisdiction). 446 [Vol. 46 TOWARD TRIBAL AUTONOMY OF LANDS held in fee, even when the tribal government is the land owner. 56 Federal courts have determined... of Discovery in American Indian Law, 42 IDAHO L. REV. 1, 115 (2005). NATURAL RESOURCES JOURNAL government would take on a brief supervisory and protectorate role as trustee over the newly allotted lands. 4 After an adjustment period for the new individual...

  6. Natural history of severe decompression sickness after rapid ascent from air saturation in a porcine model

    E-Print Network [OSTI]

    Fahlman, Andreas

    Carlo analysis decreased subject requirement without sacrificing power. This model provides a useful, the tissues contain the maximum nitrogen load possible for a given depth, so decompression from saturation saturation conditions are relatively sparse and, for ethical reasons, do not ap- proach the severe profiles

  7. Formation of Submicron Magnesite during Reaction of Natural Forsterite in H2O-Saturated Supercritical CO2

    SciTech Connect (OSTI)

    Qafoku, Odeta; Hu, Jian Z.; Hess, Nancy J.; Hu, Mary Y.; Ilton, Eugene S.; Feng, Ju; Arey, Bruce W.; Felmy, Andrew R.

    2014-06-01T23:59:59.000Z

    Natural forsterite was reacted in a) liquid water saturated with supercritical CO2 (scCO2) and in b) H2O-saturated scCO2 at 35-80 C and 90 atm. The solid reaction products were analyzed with nuclear magnetic resonance (NMR), scanning electron microscopy (SEM), and confocal Raman spectroscopy. Two carbonate phases, nesquehonite (MgCO3.3H2O) and magnesite (MgCO3), were identified with the proportions of the two phases depending on experimental conditions. In water saturated with scCO2, nesquehonite was the dominant carbonate phase at 35-80 C with only a limited number of large, micron size magnesite particles forming at the highest temperature, 80 C. In contrast, in H2O-saturated scCO2 magnesite formation was identified at all three temperatures: 35 , 50 , and 80 C. Magnesite was the dominant carbonation reaction product at 50 and 80 C; but nesquehonite was dominant at 35 C. The magnesite particles formed under H2O-saturated scCO2 conditions exhibited an extremely uniform submicron grain-size and nearly identical rhombohedral morphologies at all temperatures. The distribution and form of the particles were not consistent with epitaxial nucleation and growth on the forsterite surface.

  8. Saturation meter

    DOE Patents [OSTI]

    Gregurech, S.

    1984-08-01T23:59:59.000Z

    A saturation meter for use in a pressurized water reactor plant comprising a differential pressure transducer having a first and second pressure sensing means and an alarm. The alarm is connected to the transducer and is preset to activate at a level of saturation prior to the formation of a steam void in the reactor vessel.

  9. Moving zone Marangoni drying of wet objects using naturally evaporated solvent vapor

    DOE Patents [OSTI]

    Britten, Jerald A. (Oakley, CA)

    1997-01-01T23:59:59.000Z

    A surface tension gradient driven flow (a Marangoni flow) is used to remove the thin film of water remaining on the surface of an object following rinsing. The process passively introduces by natural evaporation and diffusion of minute amounts of alcohol (or other suitable material) vapor in the immediate vicinity of a continuously refreshed meniscus of deionized water or another aqueous-based, nonsurfactant rinsing agent. Used in conjunction with cleaning, developing or wet etching application, rinsing coupled with Marangoni drying provides a single-step process for 1) cleaning, developing or etching, 2) rinsing, and 3) drying objects such as flat substrates or coatings on flat substrates without necessarily using heat, forced air flow, contact wiping, centrifugation or large amounts of flammable solvents. This process is useful in one-step cleaning and drying of large flat optical substrates, one-step developing/rinsing and drying or etching/rinsing/drying of large flat patterned substrates and flat panel displays during lithographic processing, and room-temperature rinsing/drying of other large parts, sheets or continuous rolls of material.

  10. Moving zone Marangoni drying of wet objects using naturally evaporated solvent vapor

    DOE Patents [OSTI]

    Britten, J.A.

    1997-08-26T23:59:59.000Z

    A surface tension gradient driven flow (a Marangoni flow) is used to remove the thin film of water remaining on the surface of an object following rinsing. The process passively introduces by natural evaporation and diffusion of minute amounts of alcohol (or other suitable material) vapor in the immediate vicinity of a continuously refreshed meniscus of deionized water or another aqueous-based, nonsurfactant rinsing agent. Used in conjunction with cleaning, developing or wet etching application, rinsing coupled with Marangoni drying provides a single-step process for (1) cleaning, developing or etching, (2) rinsing, and (3) drying objects such as flat substrates or coatings on flat substrates without necessarily using heat, forced air flow, contact wiping, centrifugation or large amounts of flammable solvents. This process is useful in one-step cleaning and drying of large flat optical substrates, one-step developing/rinsing and drying or etching/rinsing/drying of large flat patterned substrates and flat panel displays during lithographic processing, and room-temperature rinsing/drying of other large parts, sheets or continuous rolls of material. 5 figs.

  11. Perceptual motion standstill in rapidly moving chromatic displays

    E-Print Network [OSTI]

    Sperling, George

    a narrow range of luminance contrasts and green red saturation ratios, moving stimuli were perceived, e.g., as in the slow movement of the moon across the sky, no motion or a stationary object

  12. SATURATED ZONE IN-SITU TESTING

    SciTech Connect (OSTI)

    P.W. REIMUS

    2004-11-08T23:59:59.000Z

    The purpose of this scientific analysis is to document the results and interpretations of field experiments that test and validate conceptual flow and radionuclide transport models in the saturated zone (SZ) near Yucca Mountain, Nevada. The test interpretations provide estimates of flow and transport parameters used in the development of parameter distributions for total system performance assessment (TSPA) calculations. These parameter distributions are documented in ''Site-Scale Saturated Zone Flow Model (BSC 2004 [DIRS 170037]), Site-Scale Saturated Zone Transport'' (BSC 2004 [DIRS 170036]), Saturated Zone Colloid Transport (BSC 2004 [DIRS 170006]), and ''Saturated Zone Flow and Transport Model Abstraction'' (BSC 2004 [DIRS 170042]). Specifically, this scientific analysis contributes the following to the assessment of the capability of the SZ to serve as part of a natural barrier for waste isolation for the Yucca Mountain repository system: (1) The bases for selection of conceptual flow and transport models in the saturated volcanics and the saturated alluvium located near Yucca Mountain. (2) Results and interpretations of hydraulic and tracer tests conducted in saturated fractured volcanics at the C-wells complex near Yucca Mountain. The test interpretations include estimates of hydraulic conductivities, anisotropy in hydraulic conductivity, storativities, total porosities, effective porosities, longitudinal dispersivities, matrix diffusion mass transfer coefficients, matrix diffusion coefficients, fracture apertures, and colloid transport parameters. (3) Results and interpretations of hydraulic and tracer tests conducted in saturated alluvium at the Alluvial Testing Complex (ATC) located at the southwestern corner of the Nevada Test Site (NTS). The test interpretations include estimates of hydraulic conductivities, storativities, total porosities, effective porosities, longitudinal dispersivities, matrix diffusion mass transfer coefficients, and colloid transport parameters. (4) Comparisons of sorption parameter estimates for a reactive solute tracer (lithium ion) derived from the C-wells field tracer tests and laboratory tests using C-wells core samples. (5) Sorption parameter estimates for lithium ion derived from laboratory tests using alluvium samples from ATC well NC-EWDP-19D. These estimates will allow a comparison of laboratory- and field-derived sorption parameters to be made in saturated alluvium if cross-hole tracer tests are conducted at the ATC.

  13. area saturated zone: Topics by E-print Network

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

    1) nature of the energy transfers. In both cases the magnetic energy grows at small scale and saturates as an inverse cascade ''. Rodion Stepanov; Franck Plunian 2007-11-08...

  14. aspartate aminotransferase saturation: Topics by E-print Network

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

    1) nature of the energy transfers. In both cases the magnetic energy grows at small scale and saturates as an inverse cascade ''. Rodion Stepanov; Franck Plunian 2007-11-08...

  15. arterial oxygen saturation: Topics by E-print Network

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

    1) nature of the energy transfers. In both cases the magnetic energy grows at small scale and saturates as an inverse cascade ''. Rodion Stepanov; Franck Plunian 2007-11-08...

  16. Saturated Zone Colloid Transport

    SciTech Connect (OSTI)

    H. S. Viswanathan

    2004-10-07T23:59:59.000Z

    This scientific analysis provides retardation factors for colloids transporting in the saturated zone (SZ) and the unsaturated zone (UZ). These retardation factors represent the reversible chemical and physical filtration of colloids in the SZ. The value of the colloid retardation factor, R{sub col} is dependent on several factors, such as colloid size, colloid type, and geochemical conditions (e.g., pH, Eh, and ionic strength). These factors are folded into the distributions of R{sub col} that have been developed from field and experimental data collected under varying geochemical conditions with different colloid types and sizes. Attachment rate constants, k{sub att}, and detachment rate constants, k{sub det}, of colloids to the fracture surface have been measured for the fractured volcanics, and separate R{sub col} uncertainty distributions have been developed for attachment and detachment to clastic material and mineral grains in the alluvium. Radionuclides such as plutonium and americium sorb mostly (90 to 99 percent) irreversibly to colloids (BSC 2004 [DIRS 170025], Section 6.3.3.2). The colloid retardation factors developed in this analysis are needed to simulate the transport of radionuclides that are irreversibly sorbed onto colloids; this transport is discussed in the model report ''Site-Scale Saturated Zone Transport'' (BSC 2004 [DIRS 170036]). Although it is not exclusive to any particular radionuclide release scenario, this scientific analysis especially addresses those scenarios pertaining to evidence from waste-degradation experiments, which indicate that plutonium and americium may be irreversibly attached to colloids for the time scales of interest. A section of this report will also discuss the validity of using microspheres as analogs to colloids in some of the lab and field experiments used to obtain the colloid retardation factors. In addition, a small fraction of colloids travels with the groundwater without any significant retardation. Radionuclides irreversibly sorbed onto this fraction of colloids also transport without retardation. The transport times for these radionuclides will be the same as those for nonsorbing radionuclides. The fraction of nonretarding colloids developed in this analysis report is used in the abstraction of SZ and UZ transport models in support of the total system performance assessment (TSPA) for the license application (LA). This analysis report uses input from two Yucca Mountain Project (YMP) analysis reports. This analysis uses the assumption from ''Waste Form and In-Drift Colloids-Associated Radionuclide Concentrations: Abstraction and Summary'' that plutonium and americium are irreversibly sorbed to colloids generated by the waste degradation processes (BSC 2004 [DIRS 170025]). In addition, interpretations from RELAP analyses from ''Saturated Zone In-Situ Testing'' (BSC 2004 [DIRS 170010]) are used to develop the retardation factor distributions in this analysis.

  17. SPREADSHEET DESCRIPTION DOCUMENT FOR SATURATION TEMPERATURE CALCULATION

    SciTech Connect (OSTI)

    JO J

    2008-08-29T23:59:59.000Z

    This document describes the methodology for determining the saturation temperature in waste tanks. The saturation temperature is used to calculate neutral buoyancy ratio.

  18. Saturable absorption and 'slow light'

    E-Print Network [OSTI]

    Adrian C Selden

    2006-03-25T23:59:59.000Z

    Quantitative evaluation of some recent 'slow light' experiments based on coherent population oscillations (CPO) shows that they can be more simply interpreted as saturable absorption phenomena. Therefore they do not provide an unambiguous demonstration of 'slow light'. Indeed a limiting condition on the spectral bandwidth is not generally satisfied, such that the requirements for burning a narrow spectral hole in the homogeneously broadened absorption line are not met. Some definitive tests of 'slow light' phenomena are suggested, derived from analysis of phase shift and pulse delay for a saturable absorber

  19. Non-adiabatic quantum pumping by a randomly moving quantum dot

    E-Print Network [OSTI]

    Stanislav Derevyanko; Daniel Waltner

    2015-02-10T23:59:59.000Z

    We look at random time dependent fluctuations of the electrical charge in an open 1D quantum system represented by a quantum dot experiencing random lateral motion. In essentially non-adiabatic settings we study both diffusive and ballistic (Levy) regimes of the barrier motion. Here the electric current as well as the net pumped electric charge experience random fluctuations over the static background. We show that in the large-time limit $t \\to \\infty$ the wavefunction is naturally separated into the Berry-phase component (resulting from the singular part of the wave amplitude in the co-moving frame) and the non-adiabatic correction (arising from fast oscillating, slow decaying tails of the same amplitude). In the special limit of a delta-correlated continuous Gaussian random walk we obtain closed analytical expressions for the ensemble averaged amplitude in the co-moving frame and demonstrate that the main contribution to the average wavefunction and probability current comes from the Berry-phase component which leads to the saturation of the fluctuations of the electric current and the pumped charge. We also derive the exact expressions for the average propagator (in the co-moving basis representation) for both types of motion.

  20. Ultrafast absorber saturation process and short pulse formation in injection lasers

    E-Print Network [OSTI]

    Buller, Gerald S.

    Ultrafast absorber saturation process and short pulse formation in injection lasers S. V. Zaitsev 1998 The nature of lasing threshold in passively Q-switched GaAs/AlGaAs lasers with saturable absorbers formed by heavy ion implantation is investigated in this article. After studying various laser

  1. Saturating the holographic entropy bound

    SciTech Connect (OSTI)

    Bousso, Raphael [Center for Theoretical Physics, Department of Physics University of California, Berkeley, California 94720-7300 (United States); Lawrence Berkeley National Laboratory, Berkeley, California 94720-8162 (United States); Institute for the Physics and Mathematics of the Universe, University of Tokyo, 5-1-5 Kashiwa-no-Ha, Kashiwa City, Chiba 277-8568 (Japan); Freivogel, Ben; Leichenauer, Stefan [Center for Theoretical Physics, Department of Physics University of California, Berkeley, California 94720-7300 (United States); Lawrence Berkeley National Laboratory, Berkeley, California 94720-8162 (United States)

    2010-10-15T23:59:59.000Z

    The covariant entropy bound states that the entropy, S, of matter on a light sheet cannot exceed a quarter of its initial area, A, in Planck units. The gravitational entropy of black holes saturates this inequality. The entropy of matter systems, however, falls short of saturating the bound in known examples. This puzzling gap has led to speculation that a much stronger bound, S < or approx. A{sup 3/4}, may hold true. In this note, we exhibit light sheets whose entropy exceeds A{sup 3/4} by arbitrarily large factors. In open Friedmann-Robertson-Walker universes, such light sheets contain the entropy visible in the sky; in the limit of early curvature domination, the covariant bound can be saturated but not violated. As a corollary, we find that the maximum observable matter and radiation entropy in universes with positive (negative) cosmological constant is of order {Lambda}{sup -1} ({Lambda}{sup -2}), and not |{Lambda}|{sup -3/4} as had hitherto been believed. Our results strengthen the evidence for the covariant entropy bound, while showing that the stronger bound S < or approx. A{sup 3/4} is not universally valid. We conjecture that the stronger bound does hold for static, weakly gravitating systems.

  2. Poverty: Moving Forward with

    E-Print Network [OSTI]

    Saskatchewan, University of

    Reducing Poverty: Moving Forward with Alberta's Social Policy Framework 1 Heather Collier Director Implementing the Framework Alberta's Poverty Reduction Strategy What Does Poverty in Alberta Look Like Policy shifts to work towards in design and delivery 15 #12;Poverty Reduction Poverty Reduction Strategy

  3. CT-scan-monitored electrical-resistivity measurements show problems achieving homogeneous saturation

    SciTech Connect (OSTI)

    Sprunt, E.S.; Davis, R.M.; Muegge, E.L. (Mobil R and D Corp. (US)); Desai, K.P. (Saudi Aramco (SA))

    1991-06-01T23:59:59.000Z

    This paper reports on x-ray computerized tomography (CT) scans obtained during measurement of the electrical resistivity of core samples which revealed some problems in obtaining uniform saturation along the lengths of the samples. The electrical resistivity of core samples is measured as a function of water saturation to determine the saturation exponent used in electric-log interpretation. An assumption in such tests is that the water saturation is uniformly distributed. Failure of this assumption can result in errors in the determination of the saturation exponent. Three problems were identified in obtaining homogeneous water saturation in two samples of a Middle Eastern carbonate grainstone: a stationary front formed in one sample at 1-psi oil/brine capillary pressure, a moving front formed at oil/brine capillary pressure {le}4 psi in samples tested in fresh mixed-wettability and cleaned water-wet states, and the heterogeneous fluid distribution caused by a rapidly moving front did not dissipate when the capillary pressure was eliminated in the samples.

  4. Electrostatics of moving plasma

    SciTech Connect (OSTI)

    Ignatov, A. M. [Russian Academy of Sciences, Prokhorov General Physics Institute (Russian Federation)] [Russian Academy of Sciences, Prokhorov General Physics Institute (Russian Federation)

    2013-07-15T23:59:59.000Z

    The stability of charge distribution over the surface of a conducting body in moving plasma is analyzed. Using a finite-width plate streamlined by a cold neutralized electron flow as an example, it is shown that an electrically neutral body can be unstable against the development of spontaneous polarization. The plasma parameters at which such instability takes place, as well as the frequency and growth rate of the fundamental mode of instability, are determined.

  5. Moving | GE Global Research

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

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

  6. Self isolating high frequency saturable reactor

    DOE Patents [OSTI]

    Moore, James A. (Powell, TN)

    1998-06-23T23:59:59.000Z

    The present invention discloses a saturable reactor and a method for decoupling the interwinding capacitance from the frequency limitations of the reactor so that the equivalent electrical circuit of the saturable reactor comprises a variable inductor. The saturable reactor comprises a plurality of physically symmetrical magnetic cores with closed loop magnetic paths and a novel method of wiring a control winding and a RF winding. The present invention additionally discloses a matching network and method for matching the impedances of a RF generator to a load. The matching network comprises a matching transformer and a saturable reactor.

  7. SEISMIC EVALUATION OF HYDROCARBON SATURATION IN DEEP-WATER RESERVOIRS

    SciTech Connect (OSTI)

    Michael Batzle; D-h Han; R. Gibson; Huw James

    2005-01-22T23:59:59.000Z

    During this last quarter of the ''Seismic Evaluation of Hydrocarbon Saturation in Deep-Water Reservoirs'' project (Grant/Cooperative Agreement DE-FC26-02NT15342), we have moved forward on several fronts, including data acquisition as well as analysis and application. During this quarter we have: (1) Completed our site selection (finally); (2) Measured fluid effects in Troika deep water sand sample; (3) Applied the result to Ursa ''fizz gas'' zone; (4) Compared thin layer property averaging on AVO response; (5) Developed target oriented NMO stretch correction; (6) Examined thin bed effects on A-B crossplots; and (7) Begun incorporating outcrop descriptive models in seismic forward models. Several factors can contribute to limit our ability to extract accurate hydrocarbon saturations in deep water environments. Rock and fluid properties are one factor, since, for example, hydrocarbon properties will be considerably different with great depths (high pressure) when compared to shallow properties. Significant over pressure, on the other hand will make the rocks behave as if they were shallower. In addition to the physical properties, the scale and tuning will alter our hydrocarbon indicators. Reservoirs composed of thin bed effects will broaden the reflection amplitude distribution with incident angle. Normal move out (NMO) stretch corrections based on frequency shifts can be applied to offset this effect. Tuning will also disturb the location of extracted amplitudes on AVO intercept and gradient (A-B) plots. Many deep water reservoirs fall this tuning thickness range. Our goal for the remaining project period is to systematically combine and document these various effects for use in deep water exploration.

  8. Scintillation probe with photomultiplier tube saturation indicator

    DOE Patents [OSTI]

    Ruch, Jeffrey F. (Bethel Park, PA); Urban, David J. (Glassport, PA)

    1996-01-01T23:59:59.000Z

    A photomultiplier tube saturation indicator is formed by supplying a supplemental light source, typically an light emitting diode (LED), adjacent to the photomultiplier tube. A switch allows the light source to be activated. The light is forwarded to the photomultiplier tube by an optical fiber. If the probe is properly light tight, then a meter attached to the indicator will register the light from the LED. If the probe is no longer light tight, and the saturation indicator is saturated, no signal will be registered when the LED is activated.

  9. A Model for the Saturation of the Turbulent Dynamo

    E-Print Network [OSTI]

    Schober, Jennifer; Federrath, Christoph; Bovino, Stefano; Klessen, Ralf S

    2015-01-01T23:59:59.000Z

    The origin of strong magnetic fields in the Universe can be explained by amplifying weak seed fields via turbulent motions on small spatial scales and subsequently transporting the magnetic energy to larger scales. This process is known as the turbulent dynamo and depends on the properties of turbulence, i.e. on the hydrodynamical Reynolds number and the compressibility of the gas, and on the magnetic diffusivity. While we know the growth rate the magnetic energy in the linear regime, the saturation level, i.e. the ratio of magnetic energy to turbulent kinetic energy that can be reached, is not known from analytical calculations. In this paper we present the first scale-dependent saturation model based on an effective turbulent resistivity which is determined by the turnover timescale of turbulent eddies and the magnetic energy density. The magnetic resistivity increases compared to the Spitzer value and the effective scale on which the magnetic energy spectrum is at its maximum moves to larger spatial scales...

  10. Saturable inductor and transformer structures for magnetic pulse compression

    DOE Patents [OSTI]

    Birx, Daniel L. (Londonderry, NH); Reginato, Louis L. (Orinda, CA)

    1990-01-01T23:59:59.000Z

    Saturable inductor and transformer for magnetic compression of an electronic pulse, using a continuous electrical conductor looped several times around a tightly packed core of saturable inductor material.

  11. Reaction of Water-Saturated Supercritical CO2 with Forsterite...

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

    Water-Saturated Supercritical CO2 with Forsterite: Evidence for Magnesite Formation at Low Temperatures. Reaction of Water-Saturated Supercritical CO2 with Forsterite: Evidence for...

  12. Fayalite Dissolution and Siderite Formation in Water-Saturated...

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

    Fayalite Dissolution and Siderite Formation in Water-Saturated Supercritical CO2. Fayalite Dissolution and Siderite Formation in Water-Saturated Supercritical CO2. Abstract:...

  13. An automated tool for three types of saturated hydraulic conductivity...

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

    automated tool for three types of saturated hydraulic conductivity laboratory measurements. An automated tool for three types of saturated hydraulic conductivity laboratory...

  14. Determination of Water Saturation in Relatively Dry Porous Media...

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

    Water Saturation in Relatively Dry Porous Media Using Gas-phase Tracer Tests. Determination of Water Saturation in Relatively Dry Porous Media Using Gas-phase Tracer Tests....

  15. Saturation of the R-mode Instability

    E-Print Network [OSTI]

    Phil Arras; Eanna E. Flanagan; Sharon M. Morsink; A. Katrin Schenk; Saul A. Teukolsky; Ira Wasserman

    2003-02-11T23:59:59.000Z

    Rossby waves (r-modes) in rapidly rotating neutron stars are unstable because of the emission of gravitational radiation. We study saturation of this instability by nonlinear transfer of energy to stellar "inertial" oscillation modes. We present detailed calculations of stellar inertial modes in the WKB limit, their linear damping by bulk and shear viscosity, and the nonlinear coupling forces among these modes. The saturation amplitude is derived in the extreme limits of strong or weak driving by radiation reaction, as compared to the damping rate of low order inertial modes. We find the saturation energy is {\\it extremely small}, at least four orders of magnitude smaller than that found by previous investigators. We discuss the consequences of this result for spin evolution of young neutron stars, and neutron stars being spun up by accretion in Low Mass X-ray Binaries.We also discuss the detection of these gravitational waves by LIGO.

  16. Model Discrepancy in the Saturated Path Hydrology Model: Initial Analysis

    E-Print Network [OSTI]

    Oakley, Jeremy

    Model Discrepancy in the Saturated Path Hydrology Model: Initial Analysis Tom Fricker University discrepancy in the Saturated Path Hydrology Model (logSPM, Kuczera et al., 2006). The purpose). 1 #12;3 The Saturated Path Hydrology Model We consider the Saturated Path Hydrology Model (log

  17. Oxidative weathering chemical migration under variably saturated conditions and supergene copper enrichment

    SciTech Connect (OSTI)

    Xu, Tianfu; Pruess, K.; Brimhall, G.

    1999-04-01T23:59:59.000Z

    Transport of oxygen gas from the land surface through an unsaturated zone has a strong influence on oxidative weathering processes. Oxidation of sulfide minerals such as pyrite (FeS{sub 2}), one of the most common naturally occurring minerals, is the primary source of acid drainage from mines and waste rock piles. Here we present a detailed numerical model of supergene copper enrichment that involves the oxidative weathering of pyrite (FeS{sub 2}) and chalcopyrite (CuFeS{sub 2}), and acidification that causes mobilization of metals in the unsaturated zone, with subsequent formation of enriched ore deposits of chalcocite (CuS) and covellite (Cu{sub 2}S) in the reducing conditions below the water table. We examine and identify some significant conceptual and computational issues regarding the oxidative weathering processes through the modeling tool. The dissolution of gaseous oxygen induced by the oxidation reduces oxygen partial pressure, as well as the total pressure of the gas phase. As a result, the gas flow is modified, then the liquid phase flow. Results indicate that this reaction effect on the fluid flow may not be important under ambient conditions, and gas diffusion can be a more important mechanism for oxygen supply than gas or liquid advection. Acidification, mobilization of metals, and alteration of primary minerals mostly take place in unsaturated zone (oxidizing), while precipitation of secondary minerals mainly occurs in saturated zone (reducing). The water table may be considered as an interface between oxidizing and reducing zones. Moving water table due to change of infiltration results in moving oxidizing zone and redistributing aqueous chemical constitutes and secondary mineral deposits. The oxidative weathering processes are difficult to model numerically, because concentrations of redox sensitive chemical species such as O{sub 2}(aq), SO{sub 4}{sup 2-} and HS{sup -} may change over tens of orders of magnitude between oxidizing and reducing conditions. In order to simulate substantial reaction progress over geologic time, one can benefit from the quasi-stationary state (QSS) approximation. A significant saving of computing time using QSS is demonstrated through the example. In addition, changes in porosity and permeability due to mineral dissolution and precipitation are also addressed in some degree. Even though oxidative weathering is sensitive to many factors, this work demonstrates that our model provides a comprehensive suite of process modeling capabilities, which could serve as a prototype for oxidative weathering processes with broad significance for geoscientific, engineering, and environmental applications.

  18. Transmission Lines Emulating Moving Media

    E-Print Network [OSTI]

    Vehmas, Joni; Tretyakov, Sergei

    2014-01-01T23:59:59.000Z

    In this paper, we show how the electromagnetic phenomena in moving magnetodielectric media can be emulated using artificial composite structures at rest. In particular, we introduce nonreciprocal periodically loaded transmission lines which support waves obeying the same rules as plane electromagnetic waves in moving media. Because the actual physical structure is at rest, in these transmission lines there are no fundamental limitations on the velocity values, which may take values larger than the speed of light or even complex values (considering complex amplitudes in the time-harmonic regime). An example circuit of a unit cell of a "moving" transmission line is presented and analyzed both numerically and experimentally. The special case of composite right/left handed host line is also studied numerically. Besides the fundamental interest, the study is relevant for potential applications in realizing engineered materials for various transformations of electromagnetic fields.

  19. Spectral Emission of Moving Atom

    E-Print Network [OSTI]

    J. X. Zheng-Johansson

    2008-03-17T23:59:59.000Z

    A renewed analysis of the H.E. Ives and G.R. Stilwell's experiment on moving hydrogen canal rays (J. Opt. Soc. Am., 1938, v.28, 215) concludes that the spectral emission of a moving atom exhibits always a redshift which informs not the direction of the atom's motion. The conclusion is also evident from a simple energy relation: atomic spectral radiation is emitted as an orbiting electron consumes a portion of its internal energy on transiting to a lower-energy state which however has in a moving atom an additional energy gain; this results in a redshift in the emission frequency. Based on auxiliary experimental information and a scheme for de Broglie particle formation, we give a vigorous elucidation of the mechanism for deceleration radiation of atomic electron; the corresponding prediction of the redshift is in complete agreement with the Ives and Stilwell's experimental formula.

  20. Calibration of Moving Puncture Simulations

    E-Print Network [OSTI]

    Bernd Bruegmann; Jose A. Gonzalez; Mark Hannam; Sascha Husa; Ulrich Sperhake; Wolfgang Tichy

    2006-10-26T23:59:59.000Z

    We present single and binary black hole simulations that follow the moving puncture paradigm of simulating black-hole spacetimes without excision, and use moving boxes mesh refinement. Focussing on binary black hole configurations where the simulations cover roughly two orbits, we address five major issues determining the quality of our results: numerical discretization error, finite extraction radius of the radiation signal, physical appropriateness of initial data, gauge choice and computational performance. We also compare results we have obtained with the BAM code described here with the independent LEAN code.

  1. CORROSION OF NUCLEAR WASTE GLASSES IN NON-SATURATED CONDITIONS: TIME-TEMPERATURE BEHAVIOUR

    E-Print Network [OSTI]

    Sheffield, University of

    CORROSION OF NUCLEAR WASTE GLASSES IN NON-SATURATED CONDITIONS: TIME-TEMPERATURE BEHAVIOUR Michael Rostovsky Lane, 2/14, Moscow, 119121, Russia This paper examines corrosion behaviour of radioactive term natural tests. These demonstrated diminishing of release rates of radionuclides by time. Corrosion

  2. Working With Stakeholders to Move

    E-Print Network [OSTI]

    them Clarify #12;Narrow Combine obvious duplicates to eliminate redundancy Prioritize using N/3 (number Move around to keep energy up Body expression #12;What to Watch For Possible agreements Questions Process suggestions Creative ideas Energy level #12;Don't Forget Outreach! Stakeholders are a target

  3. Saturated Zone In-Situ Testing

    SciTech Connect (OSTI)

    P. W. Reimus; M. J. Umari

    2003-12-23T23:59:59.000Z

    The purpose of this scientific analysis is to document the results and interpretations of field experiments that have been conducted to test and validate conceptual flow and radionuclide transport models in the saturated zone (SZ) near Yucca Mountain. The test interpretations provide estimates of flow and transport parameters that are used in the development of parameter distributions for Total System Performance Assessment (TSPA) calculations. These parameter distributions are documented in the revisions to the SZ flow model report (BSC 2003 [ 162649]), the SZ transport model report (BSC 2003 [ 162419]), the SZ colloid transport report (BSC 2003 [162729]), and the SZ transport model abstraction report (BSC 2003 [1648701]). Specifically, this scientific analysis report provides the following information that contributes to the assessment of the capability of the SZ to serve as a barrier for waste isolation for the Yucca Mountain repository system: (1) The bases for selection of conceptual flow and transport models in the saturated volcanics and the saturated alluvium located near Yucca Mountain. (2) Results and interpretations of hydraulic and tracer tests conducted in saturated fractured volcanics at the C-wells complex near Yucca Mountain. The test interpretations include estimates of hydraulic conductivities, anisotropy in hydraulic conductivity, storativities, total porosities, effective porosities, longitudinal dispersivities, matrix diffusion mass transfer coefficients, matrix diffusion coefficients, fracture apertures, and colloid transport parameters. (3) Results and interpretations of hydraulic and tracer tests conducted in saturated alluvium at the Alluvium Testing Complex (ATC), which is located at the southwestern corner of the Nevada Test Site (NTS). The test interpretations include estimates of hydraulic conductivities, storativities, total porosities, effective porosities, longitudinal dispersivities, matrix diffusion mass transfer coefficients, and colloid transport parameters. (4) Comparisons of sorption parameter estimates for a reactive solute tracer (lithium ion) derived from both the C-wells field tracer tests and laboratory tests using C-wells core samples. (5) Sorption parameter estimates for lithium ion derived from laboratory tests using alluvium samples from NC-EWDP-19D1 (one of the wells at the ATC) so that a comparison of laboratory- and field-derived sorption parameters can be made in saturated alluvium if cross-hole tracer tests are conducted at the ATC.

  4. SEISMIC EVALUATION OF HYDROCARBON SATURATION IN DEEP-WATER RESERVOIRS

    SciTech Connect (OSTI)

    M. Batzle; D-h Han; R. Gibson; O. Djordjevic

    2003-03-20T23:59:59.000Z

    The ''Seismic Evaluation of Hydrocarbon Saturation in Deep-Water Reservoirs'' (Grant/Cooperative Agreement DE-FC26-02NT15342) began September 1, 2002. During this second quarter: A Direct Hydrocarbon Indicator (DHI) symposium was held at UH; Current DHI methods were presented and forecasts made on future techniques; Dr. Han moved his laboratory from HARC to the University of Houston; Subcontracts were re-initiated with UH and TAMU; Theoretical and numerical modeling work began at TAMU; Geophysical Development Corp. agreed to provide petrophysical data; Negotiations were begun with Veritas GDC to obtain limited seismic data; Software licensing and training schedules were arranged with Paradigm; and Data selection and acquisition continues. The broad industry symposium on Direct Hydrocarbon Indicators was held at the University of Houston as part of this project. This meeting was well attended and well received. A large amount of information was presented, not only on application of the current state of the art, but also on expected future trends. Although acquisition of appropriate seismic data was expected to be a significant problem, progress has been made. A 3-D seismic data set from the shelf has been installed at Texas A&M University and analysis begun. Veritas GDC has expressed a willingness to provide data in the deep Gulf of Mexico. Data may also be available from TGS.

  5. Energy Department Moves Forward on Alaska Natural Gas Pipeline Loan

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the YouTube|6721 Federal RegisterHydrogen and Fuel Cellof Energy MobilePowerGuarantee

  6. Clean Cities Moving Fleets Forward with Liquefied Natural Gas | Department

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the YouTube platformBuilding RemovalCSSDepartmentDepartment ofCity and 25ClayEnergy|of

  7. Energy Department Moves Forward on Alaska Natural Gas Pipeline Loan

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011AT&T,OfficeEnd of Year 2010 SNF &Department ofDepartmentInfrastructureGuarantee

  8. Moving Toward Zero Energy Buildings

    E-Print Network [OSTI]

    Ginsberg, M.

    2008-01-01T23:59:59.000Z

    of Directors U.S. Department of Energy 1000 Independence Avenue, SW Washington, DC 20585 00 12 02/ 5 86 - 12 11 mark.ginsberg@ee.doe.gov Moving Toward Zero Energy Buildings When I began discussing the idea of Zero Energy Buildings in the mid...-1990s, I received sceptical looks and laughter. Today, we are seeing the concept blossom into a large number of buildings throughout the world that are net zero fossil fuel buildings. I use the term zero energy buildings to mean ?buildings...

  9. Moving Toward Zero Energy Buildings

    E-Print Network [OSTI]

    Ginsberg, M.

    2008-01-01T23:59:59.000Z

    -1990s, I received sceptical looks and laughter. Today, we are seeing the concept blossom into a large number of buildings throughout the world that are net zero fossil fuel buildings. I use the term zero energy buildings to mean ?buildings... of Directors U.S. Department of Energy 1000 Independence Avenue, SW Washington, DC 20585 00 12 02/ 5 86 - 12 11 mark.ginsberg@ee.doe.gov Moving Toward Zero Energy Buildings When I began discussing the idea of Zero Energy Buildings in the mid...

  10. Hawking radiation in moving plasmas

    E-Print Network [OSTI]

    L. C. Garcia de Andrade

    2005-09-07T23:59:59.000Z

    Bi-metricity and Hawking radiation are exhibit in non-relativistic moving magnetohydrodynamics (MHD) plasma medium generating two Riemannian effective spacetimes. The first metric is a flat metric although the speed of "light" is given by a time dependent signal where no Hawking radiation or effective black holes are displayed. This metric comes from a wave equation which the scalar function comes from the scalar potential of the background velocity of the fluid and depends on the perturbation of the magnetic background field. The second metric is an effective spacetime metric which comes from the perturbation of the background MHD fluid. This Riemann metric exhibits a horizon and Hawking radiation which can be expressed in terms of the background constant magnetic field. The effective velocity is given Alfven wave velocity of plasma physics. The effective black hole found here is analogous to the optical black hole in moving dielectrics found by De Lorenci et al [Phys. Rev. D (2003)] where bi-metricity and Hawking radiation in terms of the electric field are found.

  11. Fluid distribution effect on sonic attenuation in partially saturated limestones

    SciTech Connect (OSTI)

    Cadoret, T. [Elf Exploration Production, Pau (France). Dept. Sismique] [Elf Exploration Production, Pau (France). Dept. Sismique; Mavko, G. [Stanford Univ., CA (United States)] [Stanford Univ., CA (United States); Zinszner, B. [Inst. Francais du Petrole, Rueil Malmaison (France). Lab. de Physique des Roches] [Inst. Francais du Petrole, Rueil Malmaison (France). Lab. de Physique des Roches

    1998-01-01T23:59:59.000Z

    Extensional and torsional wave-attenuation measurements are obtained at a sonic frequency around 1 kHz on partially saturated limestones using large resonant bars, 1 m long. To study the influence of the fluid distribution, the authors use two different saturation methods: drying and depressurization. When water saturation (S{sub w}) is higher than 70%, the extensional wave attenuation is found to depend on whether the resonant bar is jacketed. This can be interpreted as the Biot-Gardner-White effect. The experimental results obtained on jacketed samples show that, during a drying experiment, extensional wave attenuation is influenced strongly by the fluid content when S{sub w} is between approximately 70% and 100%. This sensitivity to fluid saturation vanishes when saturation is obtained through depressurization. Using a computer-assisted tomographic (CT) scan, the authors found that, during depressurization, the fluid distribution is homogeneous at the millimetric scale at all saturations. In contrast, during drying, heterogeneous saturation was observed at high water-saturation levels. Thus, the authors interpret the dependence of the extensional wave attenuation upon the saturation method as principally caused by a fluid distribution effect. Torsional attenuation shows no sensitivity to fluid saturation for S{sub w} between 5% and 100%.

  12. Saturation of elliptic flow and shear viscosity

    E-Print Network [OSTI]

    A. K. Chaudhuri

    2007-10-08T23:59:59.000Z

    Effect of shear viscosity on elliptic flow is studied in causal dissipative hydrodynamics in 2+1 dimensions. Elliptic flow is reduced in viscous dynamics. Causal evolution of minimally viscous fluid ($\\eta/s$=0.08), can explain the PHENIX data on elliptic flow in 16-23% Au+Au collisions up to $p_T\\approx$3.6 GeV. In contrast, ideal hydrodynamics, can explain the same data only up to $p_T\\approx$1.5 GeV. $p_T$ spectra of identified particles are also better explained in minimally viscous fluid than in ideal dynamics. However, saturation of elliptic flow at large $p_T$ is not reproduced.

  13. Gamma irradiation in a saturated tuff environment

    SciTech Connect (OSTI)

    Bates, J.K.; Oversby, V.M.

    1984-12-31T23:59:59.000Z

    The influence of gamma irradiation on the reaction of actinide doped SRL 165 and PNL 76-68 glasses in a saturated tuff environment has been studied in a series of tests lasting up to 56 days. The reaction, and subsequent actinide release, of both glasses depends on the dynamic interaction between radiolysis effects which cause the solution pH to become more acidic and glass reaction which drives the pH more basic. The use of large gamma irradiation dose rates to accelerate reactions that would occur in an actual repository radiation field may affect this dynamic balance by unduly influencing the mechanism of the glass-water reaction. Comparisons are made between the present results and data obtained by reacting the same or similar glasses using MCC-1 and NNWSI rock cup procedures. 11 references, 3 figures.

  14. 2009 CALIFORNIA RESIDENTIAL APPLIANCE SATURATION STUDY

    E-Print Network [OSTI]

    data, household energy consumption data and weather information to calculate average annual information on appliances, equipment, and general consumption patterns. Data collection was completed in early 2010. The study yielded energy consumption estimates for 27 electric and 10 natural gas

  15. aromtisko ogderau saturs: Topics by E-print Network

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

    diffractive vector meson production, we show that the proton appears quite dense to a small size probe at present HERA energies. This means that saturation effects are already...

  16. Aligned fractures modeled as boundary conditions within saturated ...

    E-Print Network [OSTI]

    2015-03-30T23:59:59.000Z

    e di Geofisica Sperimentale, OGS. SUMMARY. Fractures in a fluid-saturated poroelastic -Biot- medium are very thin, compliant and highly permeable layers.

  17. Estimating seismic velocities at ultrasonic frequencies in partially saturated rocks

    SciTech Connect (OSTI)

    Mavko, G.; Nolen-Hoeksema, R. (Stanford Univ., CA (United States). Dept. of Geophysics)

    1994-02-01T23:59:59.000Z

    Seismic velocities in rocks at ultrasonic frequencies depend not only on the degree of saturation but also on the distribution of the fluid phase at various scales within the pore space. Two scales of saturation heterogeneity are important: (1) saturation differences between thin compliant pores and larger stiffer pores, and (2) differences between saturated patches and undersaturated patches at a scale much larger than any pore. The authors propose a formalism for predicting the range of velocities in partially saturated rocks that avoids assuming idealized pore shapes by using measured dry rock velocity versus pressure and dry rock porosity versus pressure. The pressure dependence contains all of the necessary information about the distribution of pore compliance for estimating effects of saturation at the finest scales where small amounts of fluid in the thinnest, most compliant parts of the pore space stiffen the rock in both compression and shear (increasing both P- and S-wave velocities) in approximately the same way that confining pressure stiffens the rock by closing the compliant pores. Large-scale saturation patches tend to increase only the high-frequency bulk modulus by amounts roughly proportional to the saturation. The pore-scale effects will be most important at laboratory and logging frequencies when pore-scale pore pressure gradients are unrelaxed. The patchy-saturation effects can persist even at seismic field frequencies if the patch sizes are sufficiently large and the diffusivities are sufficiently low for the larger-scale pressure gradients to be unrelaxed.

  18. aromatics saturation opening: Topics by E-print Network

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

    the covariant bound can be saturated but not violated. As a corollary, we find that the maximum observable matter and radiation entropy in universes with positive (negative)...

  19. FEMP Website Moves Into Energy.gov

    Broader source: Energy.gov [DOE]

    The Federal Energy Management Program in January moved its Web pages into Energy.gov, the U.S. Department of Energy's website.

  20. Multiple moving wall dry coal extrusion pump

    DOE Patents [OSTI]

    Fitzsimmons, Mark Andrew

    2013-05-14T23:59:59.000Z

    A pump for transporting particulate material includes a passageway defined on each side between an inlet and an outlet by a moving wall.

  1. on the process move program polytope

    E-Print Network [OSTI]

    Herv Kerivin

    2006-10-02T23:59:59.000Z

    Oct 2, 2006 ... Polyhedral combinatorics of a resource-constrained ordering problem part II: on the process move program polytope. Herv Kerivin (kerivin...

  2. STEWARDSHIP MAINTAINING NATURAL RICHES

    E-Print Network [OSTI]

    Ford, James

    ;Outstanding Results 5 Energy Conservation: Saved 240 Million KWH over last fifteen years. Green BuildingLAND STEWARDSHIP MAINTAINING NATURAL RICHES TRANSPORTATION GOING THE EXTRA MILE GREEN BUILDING SHOWCASING INNOVATION WATER CONSERVING PRESCIOUS RESOURCES ENERGY MOVING TO A BRIGHTER FUTURE WASTE REDUCING

  3. Squirt flow in fully saturated rocks

    SciTech Connect (OSTI)

    Dvorkin, J.; Mavko, G.; Nur, A. [Stanford Univ., CA (United States). Dept. of Geophysics] [Stanford Univ., CA (United States). Dept. of Geophysics

    1995-01-01T23:59:59.000Z

    The authors estimate velocity/frequency dispersion and attenuation in fully saturated rocks by employing the squirt-flow mechanism of solid-fluid interaction. In this model, pore fluid is squeezed from thin soft cracks into the surrounding large pores. Information about the compliance of these soft cracks at low confining pressures is extracted from high-pressure velocity data. The frequency dependence of squirt-induced pressure in the soft cracks is linked with the porosity and permeability of the soft pore space, and the characteristic squirt-flow length. These unknown parameters are combined into one expression that is assumed to be a fundamental rock property that does not depend on frequency. The appropriate value of this expression for a given rock can be found by matching the authors theoretical predictions with the experimental measurements of attenuation or velocity. The low-frequency velocity limits, as given by their model, are identical to those predicted by Gassmann`s formula. The high-frequency limits may significant exceed those given by the Biot theory: the high-frequency frame bulk modulus is close to that measured at high confining pressure. They have applied their model to D`Euville Limestone, Navajo Sandstone, and Westerly Granite. The model realistically predicts the observed velocity/frequency dispersion, and attenuation.

  4. Calculations of composition boundaries of saturated phases

    SciTech Connect (OSTI)

    Brewer, L.; Hahn, S.

    1983-09-27T23:59:59.000Z

    A program for the HP-41CV calculator is presented for calculating the equilibrium composition boundaries of pairs of saturating solids, liquids, or a combination of a solid and liquid. The activity coefficients must be represented in the form ln ..gamma../sub 1/ = (b/sub h//T - b/sub s/)x/sub 2//sup 2/ + (c/sub h//T - c/sub x/)x/sub 2//sup 3/ where h refers to an enthalpy contribution and s refers to an excess entropy contribution. For solid-liquid equilibria, enthalpies and entropies of fusion are required. For all equilibria, provision is made for use of hypothetical standard states such as the Henry's Law standard states. For example, in treating solid solutions of molybdenum in face-centered cubic metals such as Ni, Rh, or Pt, it is sometimes convenient to use a hypothetical fcc standard state of Mo which represents the limiting Henry's Law behavior of Mo in the fcc metal and has much different properties than a real fcc molybdenum solid.

  5. SATURATED ZONE FLOW AND TRANSPORT MODEL ABSTRACTION

    SciTech Connect (OSTI)

    B.W. ARNOLD

    2004-10-27T23:59:59.000Z

    The purpose of the saturated zone (SZ) flow and transport model abstraction task is to provide radionuclide-transport simulation results for use in the total system performance assessment (TSPA) for license application (LA) calculations. This task includes assessment of uncertainty in parameters that pertain to both groundwater flow and radionuclide transport in the models used for this purpose. This model report documents the following: (1) The SZ transport abstraction model, which consists of a set of radionuclide breakthrough curves at the accessible environment for use in the TSPA-LA simulations of radionuclide releases into the biosphere. These radionuclide breakthrough curves contain information on radionuclide-transport times through the SZ. (2) The SZ one-dimensional (I-D) transport model, which is incorporated in the TSPA-LA model to simulate the transport, decay, and ingrowth of radionuclide decay chains in the SZ. (3) The analysis of uncertainty in groundwater-flow and radionuclide-transport input parameters for the SZ transport abstraction model and the SZ 1-D transport model. (4) The analysis of the background concentration of alpha-emitting species in the groundwater of the SZ.

  6. Moving Beyond Prevailing Street Design Standards

    E-Print Network [OSTI]

    Kammen, Daniel M.

    Moving Beyond Prevailing Street Design Standards: Assessing Legal and Liability Barriers to More of the Center for Law, Energy, and the Environment Graphic design by Crystal M. Ward This paper was prepared Communities Contents Moving Beyond Prevailing Street Design Standards Assessing Legal and Liability Barriers

  7. MIDDLE EARTH MOVE OUT INFORMATION 2013

    E-Print Network [OSTI]

    Barrett, Jeffrey A.

    MIDDLE EARTH MOVE OUT INFORMATION 2013 Start thinking about the move-out process now. If you to you by your RA, sent to you by e-mail, and updated on the Middle Earth website (http://www.housing.uci.edu/housingOptions/Middle_Earth noon on June 15th must submit a written request to the Middle Earth Housing Office at middleearth

  8. Degradation of entanglement in moving frames

    E-Print Network [OSTI]

    Shahpoor Moradi

    2012-01-02T23:59:59.000Z

    The distillability of bipartite entangled state as seen by moving observers has been investigated. It is found that the same initial entanglement for a state parameter $\\alpha$ and its "normalized partner" $\\sqrt{1-\\alpha^2}$ will be degraded as seen by moving observer. It is shown that in the ultra relativistic limit, the state does not have distillable entanglement for any $\\alpha$.

  9. Moving core beam energy absorber and converter

    DOE Patents [OSTI]

    Degtiarenko, Pavel V.

    2012-12-18T23:59:59.000Z

    A method and apparatus for the prevention of overheating of laser or particle beam impact zones through the use of a moving-in-the-coolant-flow arrangement for the energy absorbing core of the device. Moving of the core spreads the energy deposition in it in 1, 2, or 3 dimensions, thus increasing the effective cooling area of the device.

  10. Laser Locking with Doppler-free Saturated Absorption Spectroscopy

    E-Print Network [OSTI]

    Novikova, Irina

    - 1 - Laser Locking with Doppler-free Saturated Absorption Spectroscopy Paul L. Stubbs, Advisor the frequency of a 795 nm diode laser using a saturated absorption spectroscopy method. Laser locking in AMO physics is done to stabilize the frequency of lasers used in the laboratory in order to make results more

  11. Theory of frequency dependent acoustics in patchy-saturated ...

    E-Print Network [OSTI]

    The theory of the dynamic bulk modulus, K( ), of a porous rock, whose saturation occurs in patches of ... it is usually able to predict the speeds of sound of a saturated sample if .... strain by the usual equations of isotropic elasticity: ij. KBG ll ij.

  12. Effect of Pressure Gradient and InitialWater Saturation on

    E-Print Network [OSTI]

    Firoozabadi, Abbas

    saturation upon depth. In the Prudhoe Bay reservoirs, residual oil saturation to waterflood decreases-Wet Fractured Porous Media Guo-Qing Tang,*SPE. and Abbas Firoozabadi,SPE, Reservoir Engineering Research Inst matrix of the North Sea fractured chalk reservoirs.) Water- injection tests were conducted at different

  13. Dynamo Saturation in Rapidly Rotating Solar-Type Stars

    E-Print Network [OSTI]

    Kitchatinov, L L

    2015-01-01T23:59:59.000Z

    The magnetic activity of solar-type stars generally increases with stellar rotation rate. The increase, however, saturates for fast rotation. The Babcock-Leighton mechanism of stellar dynamos saturates as well when the mean tilt-angle of active regions approaches ninety degrees. Saturation of magnetic activity may be a consequence of this property of the Babcock-Leighton mechanism. Stellar dynamo models with a tilt-angle proportional to the rotation rate are constructed to probe this idea. Two versions of the model - treating the tilt-angles globally and using Joy's law for its latitude dependence - are considered. Both models show a saturation of dynamo-generated magnetic flux at high rotation rates. The model with latitude-dependent tilt-angles shows also a change in dynamo regime in the saturation region. The new regime combines a cyclic dynamo at low latitudes with an (almost) steady polar dynamo.

  14. Methane Hydrate Formation and Dissocation in a Partially Saturated Sand--Measurements and Observations

    SciTech Connect (OSTI)

    Kneafsey, Timothy J.; Tomutsa, Liviu; Moridis, George J.; Seol, Yongkoo; Freifeld, Barry; Taylor, Charles E.; Gupta, Arvind

    2005-03-01T23:59:59.000Z

    We performed a sequence of tests on a partially water-saturated sand sample contained in an x-ray transparent aluminum pressure vessel that is conducive to x-ray computed tomography (CT) observation. These tests were performed to gather data for estimation of thermal properties of the sand/water/gas system and the sand/hydrate/water/gas systems, as well as data to evaluate the kinetic nature of hydrate dissociation. The tests included mild thermal perturbations for the estimation of the thermal properties of the sand/water/gas system, hydrate formation, thermal perturbations with hydrate in the stability zone, hydrate dissociation through thermal stimulation, additional hydrate formation, and hydrate dissociation through depressurization with thermal stimulation. Density changes throughout the sample were observed as a result of hydrate formation and dissociation, and these processes induced capillary pressure changes that altered local water saturation.

  15. Gas Saturation and Sensitivity Analysis Using CRiSP 1 Gas Saturation and Sensitivity Analysis Using CRiSP

    E-Print Network [OSTI]

    Washington at Seattle, University of

    Gas Saturation and Sensitivity Analysis Using CRiSP 1 Gas Saturation and Sensitivity Analysis Using of Engineers began the Gas Abatement Study in order to address the problem of gas and its effects on the Snake and Columbia Rivers. One important question is how much gas reductions caused by structural changes at a few

  16. Moving system with speeded-up evolution

    E-Print Network [OSTI]

    M. I. Shirokov

    2008-02-29T23:59:59.000Z

    In the classical (non-quantum) relativity theory the course of the moving clock is dilated as compared to the course of the clock at rest (the Einstein dilation). Any unstable system may be regarded as a clock. The time evolution (e.g., the decay) of a uniformly moving physical system is considered using the relativistic quantum theory. The example of a moving system is given whose evolution turns out to be speeded-up instead of being dilated. A discussion of this paradoxical result is presented.

  17. Relationship between Anisotropy in Soil Hydraulic Conductivity and Saturation

    SciTech Connect (OSTI)

    Zhang, Z. Fred

    2014-01-01T23:59:59.000Z

    Anisotropy in unsaturated hydraulic conductivity is saturation-dependent. Accurate characterization of soil anisotropy is very important in simulating flow and contaminant (e.g., radioactive nuclides in Hanford) transport. A recently developed tensorial connectivity-tortuosity (TCT) concept describes the hydraulic conductivity tensor of the unsaturated anisotropic soils as the product of a scalar variable, the symmetric connectivity tortuosity tensor, and the hydraulic conductivity tensor at saturation. In this study, the TCT model is used to quantify soil anisotropy in unsaturated hydraulic conductivity. The TCT model can describe different types of soil anisotropy; e.g., the anisotropy coefficient, C, can be monotonically increase or decrease with saturation and can vary from greater than unity to less than unity and vice versa. Soil anisotropy is independent of soil water retention properties and can be characterized by the ratio of the saturated hydraulic conductivities and the difference of the tortuosity-connectivity coefficients in two directions. ln(C) is linearly proportional to ln(Se) with Se being the effective saturation. The log-linear relationship between C and Se allows the saturation-dependent anisotropy to be determined using linear regression with the measurements of the directional hydraulic conductivities at a minimum of two water content levels, of which one may be at full saturation. The model was tested using measurements of directional hydraulic conductivities.

  18. Prediction of core saturation instability at an HVDC converter

    SciTech Connect (OSTI)

    Burton, R.S. [Teshmont Consultants, Inc., Winnipeg, Manitoba (Canada)] [Teshmont Consultants, Inc., Winnipeg, Manitoba (Canada); Fuchshuber, C.F. [Alberta Power Ltd., Edmonton, Alberta (Canada)] [Alberta Power Ltd., Edmonton, Alberta (Canada); Woodford, D.A. [Manitoba HVDC Research Centre, Winnipeg, Manitoba (Canada)] [Manitoba HVDC Research Centre, Winnipeg, Manitoba (Canada); Gole, A.M. [Univ. of Manitoba, Winnipeg, Manitoba (Canada)] [Univ. of Manitoba, Winnipeg, Manitoba (Canada)

    1996-10-01T23:59:59.000Z

    Core saturation instability has occurred on several HVDC schemes resulting from interactions between second harmonic and dc quantities (voltages and currents) on the ac side of the converter and fundamental frequency quantities on the dc side of the converter. The instability can be reinforced by unbalanced saturation of the converter transformers. The paper presents an analytical method which can be used to quickly screen ac and dc system operating conditions to predict where core saturation instability is likely to occur. Analytical results have been confirmed using the digital transients simulation program PSCAD/EMTDC.

  19. Partnerships to continue moving toward zero emissions

    E-Print Network [OSTI]

    California at Davis, University of

    Partnerships to continue moving toward zero emissions Zero Emission transportation goals Zero Emission MAP makes available technical assistance to states and cities to support the growth of zero emission mobility markets. 1 Research shows

  20. Moving Your Laboratory Safely Guidance Document

    E-Print Network [OSTI]

    Baker, Chris I.

    Moving Your Laboratory Safely Guidance Document Revised March 2010, Page 1 #12;Table of Contentsradiological 301-496-3457 Ergonomic evaluations 301-496-7990 Hazardous, solid and mixed waste management 301

  1. No quantum friction between uniformly moving plates

    E-Print Network [OSTI]

    T. G. Philbin; U. Leonhardt

    2009-03-26T23:59:59.000Z

    The Casimir forces between two plates moving parallel to each other are found by calculating the vacuum electromagnetic stress tensor. The perpendicular force between the plates is modified by the motion but there is no lateral force on the plates. Electromagnetic vacuum fluctuations do not therefore give rise to "quantum friction" in this case, contrary to previous assertions. The result shows that the Casimir-Polder force on a particle moving at constant speed parallel to a plate also has no lateral component.

  2. Characterization of naturally occurring porous media

    E-Print Network [OSTI]

    Riley, Robert Daniel

    1965-01-01T23:59:59.000Z

    characteristics of natural occur- ring porous media, The gR /K dimensionless ratio is related to the minimum water saturation in the reverse manner as is permeability. REFERENCES Wyllie, M. R. J. and M. B. Spangler: Application of Electrical Resistivity...: Resistivity of Brine-Saturated Sands in Relation to Pore Seometry. Cornell, D. snd D. L. Kstz: Flow of Sases through Consolidated Porous Media. Industrial and En ineeri hemietr (October 1953) Vo . 5, p. 21 5. Leverett, N, C. : Capillary Behavior...

  3. A UNIFIED NUMERICAL MODEL FOR SATURATED-UNSATURATED GROUNDWATER FLOW

    E-Print Network [OSTI]

    Narasimhan, T.N.

    2011-01-01T23:59:59.000Z

    saturation) 1/L c c Compression Index; slope of the best-line is called the compression index (C ) in the case of thestraightline is the compression index, C of c Constant air

  4. Analytical model for flux saturation in sediment transport

    E-Print Network [OSTI]

    Phtz, T; Kok, J F; Herrmann, H J

    2014-01-01T23:59:59.000Z

    The transport of sediment by a fluid along the surface is responsible for dune formation, dust entrainment and for a rich diversity of patterns on the bottom of oceans, rivers, and planetary surfaces. Most previous models of sediment transport have focused on the equilibrium (or saturated) particle flux. However, the morphodynamics of sediment landscapes emerging due to surface transport of sediment is controlled by situations out-of-equilibrium. In particular, it is controlled by the saturation length characterizing the distance it takes for the particle flux to reach a new equilibrium after a change in flow conditions. The saturation of mass density of particles entrained into transport and the relaxation of particle and fluid velocities constitute the main relevant relaxation mechanisms leading to saturation of the sediment flux. Here we present a theoretical model for sediment transport which, for the first time, accounts for both these relaxation mechanisms and for the different types of sediment entrain...

  5. Saturation in ``nonmagnetic'' stainless steel C. Weber and J. Fajansa)

    E-Print Network [OSTI]

    Fajans, Joel

    Saturation in ``nonmagnetic'' stainless steel C. Weber and J. Fajansa) Department of Physics July 1998 Scientific equipment often uses ``nonmagnetic'' stainless steel, relying on the steel's nonmagnetic behavior to leave external magnetic fields unaltered. However, stainless steel's permeability can

  6. A UNIFIED NUMERICAL MODEL FOR SATURATED-UNSATURATED GROUNDWATER FLOW

    E-Print Network [OSTI]

    Narasimhan, T.N.

    2011-01-01T23:59:59.000Z

    Saturated-Unsaturated Groundwater Flow Ph.D. Dissertation in~ " Fundamental principles of groundwater flow uv e in Flowunsaturated flow in a groundwater basi.n 11 9 Hater

  7. Method of determining interwell oil field fluid saturation distribution

    DOE Patents [OSTI]

    Donaldson, Erle C. (Bartlesville, OK); Sutterfield, F. Dexter (Bartlesville, OK)

    1981-01-01T23:59:59.000Z

    A method of determining the oil and brine saturation distribution in an oil field by taking electrical current and potential measurements among a plurality of open-hole wells geometrically distributed throughout the oil field. Poisson's equation is utilized to develop fluid saturation distributions from the electrical current and potential measurement. Both signal generating equipment and chemical means are used to develop current flow among the several open-hole wells.

  8. Quantum fluctuations and saturable absorption in mesoscale lasers

    SciTech Connect (OSTI)

    Roy-Choudhury, Kaushik [Department of Physics and Astronomy, University of Southern California, Los Angeles, California 90089-0484 (United States); Levi, A. F. J. [Department of Physics and Astronomy, University of Southern California, Los Angeles, California 90089-0484 (United States); Department of Electrical Engineering, University of Southern California, Los Angeles, California 90089-2533 (United States)

    2011-04-15T23:59:59.000Z

    We present a quantum-mechanical treatment of fluctuations and saturable absorption in mesoscale lasers. The time evolution of the density matrix is obtained from numerical integration and field-field and intensity-intensity correlations are calculated to obtain steady-state linewidth and photon statistics. Inclusion of a saturable absorber in the otherwise homogeneous medium is shown to suppress lasing, increase fluctuations, and enhance spontaneous emission near threshold.

  9. Predicted geoacoustic properties of gas hydrate saturated marine sediments

    E-Print Network [OSTI]

    Curtis, William Robert

    1992-01-01T23:59:59.000Z

    PREDICTED GEOACOUSTIC PROPERTIES OF GAS HYDRATE SATURATED MAR&K SEDIMENTS A Thesis by WILLIAM ROBERT CURTIS JR. 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 May 1992 Major Subject: Oceanography PREDICTED GEOACOUSTIC PROPERTIES OF GAS HYDRATE SATURATED MARINE SEDIMENTS A Thesis by WILLIAM ROBERT CURTIS JR. Approved as to style and content by; A brey L. Anderson (Chair of Committee...

  10. Film boiling of saturated liquid flowing upward through a heated tube : high vapor quality range

    E-Print Network [OSTI]

    Laverty, W. F.

    1964-01-01T23:59:59.000Z

    Film boiling of saturated liquid flowing upward through a uniformly heated tube has been studied for the case in which pure saturated liquid enters the tube and nearly saturated vapor is discharged. Since a previous study ...

  11. Moving Protons with Pendant Amines: Proton Mobility in a Nickel...

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

    Moving Protons with Pendant Amines: Proton Mobility in a Nickel Catalyst for Oxidation of Hydrogen. Moving Protons with Pendant Amines: Proton Mobility in a Nickel Catalyst for...

  12. Science Magazine Highlight: Moving Towards Near Zero Platinum...

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

    Science Magazine Highlight: Moving Towards Near Zero Platinum Fuel Cells Science Magazine Highlight: Moving Towards Near Zero Platinum Fuel Cells Presentation slides and speaker...

  13. Moving toward a commercial market for hydrogen fuel cell vehicles...

    Energy Savers [EERE]

    Moving toward a commercial market for hydrogen fuel cell vehicles Moving toward a commercial market for hydrogen fuel cell vehicles Fuel cell vehicles and fueling stations...

  14. The Advanced Collaborative Emissions Study Moving Forward with...

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

    Moving Forward with Assessing the Emissions and Health Effects of New Diesel Technology The Advanced Collaborative Emissions Study Moving Forward with Assessing the Emissions and...

  15. Comparison of pressure-saturation characteristics derived from computed tomography and lattice Boltzmann simulations

    E-Print Network [OSTI]

    Wildenschild, Dorthe

    Comparison of pressure-saturation characteristics derived from computed tomography and lattice), Comparison of pressure-saturation characteristics derived from computed tomography and lattice Boltzmann

  16. Hydraulic Fracture: multiscale processes and moving

    E-Print Network [OSTI]

    Peirce, Anthony

    Hydraulic Fracture: multiscale processes and moving interfaces Anthony Peirce Department Mitchell (UBC) · Ed Siebrits (SLB, Houston) #12;2 Outline · What is a hydraulic fracture? · Scaling Fluid Proppant #12;6 An actual hydraulic fracture #12;7 HF experiment (Jeffrey et al CSIRO) #12;8 1D

  17. Hydraulic Fracture: multiscale processes and moving

    E-Print Network [OSTI]

    Peirce, Anthony

    Hydraulic Fracture: multiscale processes and moving interfaces Anthony Peirce Department Siebrits (SLB, Houston) #12;2 Outline · What is a hydraulic fracture? · Mathematical models of hydraulic fracture · Scaling and special solutions for 1-2D models · Numerical modeling for 2-3D problems

  18. Magnetic multipole redirector of moving plasmas

    DOE Patents [OSTI]

    Crow, James T. (Albuquerque, NM); Mowrer, Gary R. (Cedar Crest, NM)

    1999-01-01T23:59:59.000Z

    A method and apparatus for redirecting moving plasma streams using a multiple array of magnetic field generators (e.g., permanent magnets or current bearing wires). Alternate rows of the array have opposite magnetic field directions. A fine wire mesh may be employed to focus as well as redirect the plasma.

  19. SURGEURGEAnd Move Planning Manual WHAT IT MEANS

    E-Print Network [OSTI]

    Doudna, Jennifer A.

    SURGEURGEAnd Move Planning Manual A GUIDE ON WHAT IT MEANS TO SURGE, HOW LONG IT WILL TAKE AND THE BEST WAY TO GET THROUGH IT Produced by: University of California, Berkeley Capital Projects #12 Manual describes the surge planning process and provides an overview of roles and responsibilities

  20. Medical Bioremediation: A Concept Moving Toward Reality

    E-Print Network [OSTI]

    Alvarez, Pedro J.

    Medical Bioremediation: A Concept Moving Toward Reality John Schloendorn,1,2 Tim Webb,2 Kent, primarily the pyridinium bisretinoid A2E. Medical bioremediation is the concept of reversing the substance bioremediation, the new ap- proach targeting aging diseases has been termed ``medical bioremediation

  1. Build Something That Moves Mechanical Engineering

    E-Print Network [OSTI]

    Provancher, William

    that Mechanical Engineers build up the energy at the beginning of the ride by raising them to a high pointBuild Something That Moves Mechanical Engineering Objective This lesson helps students learn how to create potential energy: through rolling, torque, pressure, springs, etc. Students learn how to create

  2. Johns Hopkins University Move-In Instructions

    E-Print Network [OSTI]

    , television, fan, etc that is going to your room. Please secure each label so each does not fall off. Be sureJohns Hopkins University Move-In Instructions Step 1: Label Your Stuff Place a label with your postal box number. Your labels should look something like this: Johnny Hopkins Wolman 421 410-123-4567 D

  3. An analysis of the saturation of a high gain FEL

    SciTech Connect (OSTI)

    Gluckstern, R.L.; Okamoto, Hiromi (Maryland Univ., College Park, MD (United States). Dept. of Physics); Krinsky, S. (Brookhaven National Lab., Upton, NY (United States))

    1992-12-01T23:59:59.000Z

    We study the saturated state of an untapered free electron laser in the Compton regime, arising after exponential amplification of an initial low level of radiation by an initially monoenergetic, unbunched electron beam. The saturated state of the FEL is described by oscillations about an equilibrium state. Using the two invariants of the motion, and certain assumptions motivated by computer simulations, we provide approximate analytic descriptions of the radiation field and electron distribution in the saturation regime. We first consider a one-dimensional approximation, and later extend our approach to treat an electron beam of finite radial extent. Of note is a result on the radiated power in the case of an electron beam with small radius.

  4. Regularized Nonlinear Moving Horizon Observer for Detectable Systems

    E-Print Network [OSTI]

    Johansen, Tor Arne

    ], Alessandri et al. [2008] for different formulation relying on somewhat different assumptions. Such a moving

  5. EIGENVALUES OF SATURATED HYDROCARBONS D. J. KLEIN AND C. E. LARSON

    E-Print Network [OSTI]

    Larson, Craig E.

    EIGENVALUES OF SATURATED HYDROCARBONS D. J. KLEIN AND C. E. LARSON Abstract. A simplified H¨uckel-type molecular-orbital (MO) model for the valence electrons of saturated hydrocarbons is proposed and half negative. Keywords: saturated hydrocarbons, alkanes, stellation, para-line graph. 1. Saturated

  6. HYDRAULIC CONDUCTIVITY ESTIMATION IN PARTIALLY SATURATED SOILS USING THE ADJOINT METHOD

    E-Print Network [OSTI]

    Efendiev, Yalchin

    HYDRAULIC CONDUCTIVITY ESTIMATION IN PARTIALLY SATURATED SOILS USING THE ADJOINT METHOD J. SANTOS for the estimation of the saturated hydraulic conductivity k in a partially saturated soil Q is proposed. Groundwater exam- ple showing the implementation of the algorithm to estimate the saturated hydraulic conductivity

  7. Saturated area formation on nonconvergent hillslope topography with shallow soils: A numerical investigation

    E-Print Network [OSTI]

    Walter, M.Todd

    -dimensional, variably saturated groundwater model VS2D [Healy, 1990; Lappala et al. 1993] is used to simulate saturated of Connecticut, Storrs Abstract. Prediction of saturated area formation is important for hydrologic modeling changes in surface saturation are possible on steep hillslopes when 1 6. 1. Introduction It is improper

  8. Derivation of Soil Moisture Retention Characteristics from Saturated Hydraulic Conductivity

    E-Print Network [OSTI]

    Kumar, C.P.

    systems require knowledge of the relationships between soil moisture content (), soil water pressure (h, and evapotranspiration. The soil factors include soil matric potential and water content relationship, saturated content of soil. The relation between matric potential and volumetric water content in a soil is termed

  9. Saturation wind power potential and its implications for wind energy

    E-Print Network [OSTI]

    Saturation wind power potential and its implications for wind energy Mark Z. Jacobsona,1 at 10 km above ground in the jet streams assuming airborne wind energy devices ("jet stream the theoretical limit of wind energy available at these altitudes, particularly because some recent studies

  10. ARRA Proposed Award: Downtown Oakland Targeted Measure Saturation Program

    E-Print Network [OSTI]

    : Community Energy Services Corporation City of Oakland Circlepoint Multimedia Design Estimated Full buildings in a dense, 120 block area in the City of Oakland that is an economically disadvantaged areaARRA Proposed Award: Downtown Oakland Targeted Measure Saturation Program Targeting the City

  11. Hydrocarbon saturation determination using acoustic velocities obtained through casing

    DOE Patents [OSTI]

    Moos, Daniel (Houston, TX)

    2010-03-09T23:59:59.000Z

    Compressional and shear velocities of earth formations are measured through casing. The determined compressional and shear velocities are used in a two component mixing model to provides improved quantitative values for the solid, the dry frame, and the pore compressibility. These are used in determination of hydrocarbon saturation.

  12. Multicomponent Adsorption and Chromatography with Uneven Saturation Capacities

    E-Print Network [OSTI]

    Gu, Tingyue

    Multicomponent Adsorption and Chromatography with Uneven Saturation Capacities Tingyue Gu, Gow, the extent of size exclusion is not the same for all the components. This often causes uneven adsorption capacity and vice versa. A study of size exclusion coupled with adsorption is a rel- atively new topic

  13. Micro-Thermodynamics Saturation has the most possible

    E-Print Network [OSTI]

    Russell, Lynn

    1 Micro-Thermodynamics Saturation has the most possible dissolved species Equilibrium means of "phase" (from particle to droplet) Bohren, 1987 Macro-Thermodynamics Hot air rises Rising air)! 0.1! 10! Diameter (m)! dN! dlogD! Diameter (m)! 0.1! 10! 7.1 Surface Thermodynamics Surfaces

  14. Magnetic levitation system for moving objects

    DOE Patents [OSTI]

    Post, R.F.

    1998-03-03T23:59:59.000Z

    Repelling magnetic forces are produced by the interaction of a flux-concentrated magnetic field (produced by permanent magnets or electromagnets) with an inductively loaded closed electric circuit. When one such element moves with respect to the other, a current is induced in the circuit. This current then interacts back on the field to produce a repelling force. These repelling magnetic forces are applied to magnetically levitate a moving object such as a train car. The power required to levitate a train of such cars is drawn from the motional energy of the train itself, and typically represents only a percent or two of the several megawatts of power required to overcome aerodynamic drag at high speeds. 7 figs.

  15. Magnetic levitation system for moving objects

    DOE Patents [OSTI]

    Post, Richard F. (Walnut Creek, CA)

    1998-01-01T23:59:59.000Z

    Repelling magnetic forces are produced by the interaction of a flux-concentrated magnetic field (produced by permanent magnets or electromagnets) with an inductively loaded closed electric circuit. When one such element moves with respect to the other, a current is induced in the circuit. This current then interacts back on the field to produce a repelling force. These repelling magnetic forces are applied to magnetically levitate a moving object such as a train car. The power required to levitate a train of such cars is drawn from the motional energy of the train itself, and typically represents only a percent or two of the several megawatts of power required to overcome aerodynamic drag at high speeds.

  16. MicroBooNE Detector Move

    SciTech Connect (OSTI)

    Flemming, Bonnie; Rameika, Gina

    2014-06-25T23:59:59.000Z

    On Monday, June 23, 2014 the MicroBooNE detector -- a 30-ton vessel that will be used to study ghostly particles called neutrinos -- was transported three miles across the Fermilab site and gently lowered into the laboratory's Liquid-Argon Test Facility. This video documents that move, some taken with time-lapse camerad, and shows the process of getting the MicroBooNE detector to its new home.

  17. MicroBooNE Detector Move

    ScienceCinema (OSTI)

    Flemming, Bonnie; Rameika, Gina

    2014-07-15T23:59:59.000Z

    On Monday, June 23, 2014 the MicroBooNE detector -- a 30-ton vessel that will be used to study ghostly particles called neutrinos -- was transported three miles across the Fermilab site and gently lowered into the laboratory's Liquid-Argon Test Facility. This video documents that move, some taken with time-lapse camerad, and shows the process of getting the MicroBooNE detector to its new home.

  18. Pyrite oxidation in saturated and Unsaturated Porous Media Flow: AComparison of alternative mathematical modeling approaches

    SciTech Connect (OSTI)

    Xu, Tianfu; White, Stephen P.; Pruess, Karsten

    1998-02-15T23:59:59.000Z

    Pyrite (FeS{sub 2}) is one of the most common naturally occurring minerals that is present in many subsurface environments. It plays an important role in the genesis of enriched ore deposits through weathering reactions, is the most abundant sulfide mineral in many mine tailings, and is the primary source of acid drainage from mines and waste rock piles. The pyrite oxidation reaction serves as a prototype for oxidative weathering processes with broad significance for geoscientific, engineering, and environmental applications. Mathematical modeling of these processes is extremely challenging because aqueous concentrations of key species vary over an enormous range, oxygen inventory and supply are typically small in comparison to pyrite inventory, and chemical reactions are complex, involving kinetic control and microbial catalysis. We present the mathematical formulation of a general multi-phase advective-diffusive reactive transport model for redox processes. Two alternative implementations were made in the TOUGHREACT and TOUGH2-CHEM simulation codes which use sequential iteration and simultaneous solution, respectively. The simulators are applied to reactive consumption of pyrite in (1) saturated flow of oxidizing water, and (2) saturated-unsaturated flow in which oxygen transport occurs in both aqueous and gas phases. Geochemical evolutions predicted from different process models are compared, and issues of numerical accuracy and efficiency are discussed.

  19. Emotion Regulation: Taking Stock and Moving Forward James J. Gross

    E-Print Network [OSTI]

    Gross, James J.

    Emotion Regulation: Taking Stock and Moving Forward James J. Gross Stanford University The field). In this article, I take stock of the field and consider how it might be moved forward. I do this by asking

  20. Existence of Optical Vortices in Saturable Non-linearity

    E-Print Network [OSTI]

    Luciano Medina

    2015-05-22T23:59:59.000Z

    Optical propagation in non-linear media and the formation of optical vortices as dark holes is an area of extensive research in modern optical physics. Governed by a non-linear Schr\\"odinger equation, with self-focusing saturable non-linearity, we establish an existence theory for a unique class of spatially localized beams describing ring-profile vortex solitons. Our first type of results are established via a constrained minimization problem. We prove the existence of positive radially symmetric solutions and give necessary conditions restricting the wave propagation constant in terms of the topological charge and saturation constant. As demanded by beam confinement, we prove the exponential decay of the soliton amplitude at infinity. Secondly, we use a min-max technique to prove the existence of additional non-trivial solutions that arise as saddle-points of a corresponding indefinite action functional.

  1. Discrimination of porosity and fluid saturation using seismic velocity analysis

    DOE Patents [OSTI]

    Berryman, James G. (Danville, CA)

    2001-01-01T23:59:59.000Z

    The method of the invention is employed for determining the state of saturation in a subterranean formation using only seismic velocity measurements (e.g., shear and compressional wave velocity data). Seismic velocity data collected from a region of the formation of like solid material properties can provide relatively accurate partial saturation data derived from a well-defined triangle plotted in a (.rho./.mu., .lambda./.mu.)-plane. When the seismic velocity data are collected over a large region of a formation having both like and unlike materials, the method first distinguishes the like materials by initially plotting the seismic velocity data in a (.rho./.lambda., .mu./.lambda.)-plane to determine regions of the formation having like solid material properties and porosity.

  2. ARM - Lesson Plans: Moving Water and Waves

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625govInstrumentstdmadap Documentation TDMADAP : XDC documentationBarrow, Alaska OutreachMaking CloudsMoving Water and

  3. Moving Away from Silos | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed offOCHCO2:Introduction toManagement of the NationalPennsylvania |February 2013ofDepartment ofMoving

  4. Move data from /projectb/projectdirs

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHighandSWPA / SPRA /Ml'.SolarUS Dept of Energy, Office26,282.1MoungiMove

  5. Moving Memristor and Neuristor Research Forward

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)Integrated Codes |IsLove Your1 SECTIONES2008-54174More Documentsof EnergyMoving

  6. Concise representation of the saturation properties for pure compounds

    E-Print Network [OSTI]

    Borrelli, Leslie Kieffer

    1982-01-01T23:59:59.000Z

    CONCISE REPRESENTATION QF THE SATURATIQN PROPERTIES FQR PURE CQHPQUN DS A Thesis by LESLIE KIEFFER BQRRELLI Submitted to the Graduate College of Texas A&M University in partial fulfillment of the r equirement for the degree of NASTER... of Depa ent) May 1982 ABSTRACT CONCISE REPRESENTATION QF THE SATURATION PROPERTIES FOR PURE COMPOUNDS (May 1982) Leslie Kieffer Borrelli, B. S. , Texas ARM University Chair man of Advisor y Committee: Dr . Kenneth R. Hall Vapor pr essure...

  7. SATURATED-SUBCOOLED STRATIFIED FLOW IN HORIZONTAL PIPES

    SciTech Connect (OSTI)

    Richard Schultz

    2010-08-01T23:59:59.000Z

    Advanced light water reactor systems are designed to use passive emergency core cooling systems with horizontal pipes that provide highly subcooled water from water storage tanks or passive heat exchangers to the reactor vessel core under accident conditions. Because passive systems are driven by density gradients, the horizontal pipes often do not flow full and thus have a free surface that is exposed to saturated steam and stratified flow is present.

  8. GRAVIMETRIC MEASUREMENTS ON MOVING AND NON-INERTIAL PLATFORMS

    E-Print Network [OSTI]

    GRAVIMETRIC MEASUREMENTS ON MOVING AND NON-INERTIAL PLATFORMS By Haydey Alvarez Allende, Elias: http://www.ima.umn.edu #12;Gravimetric Measurements on Moving and Non-inertial Platforms Haydey Alvarez of the gravitational field using a gravimeter mounted on an aircraft. In a moving non-inertial platform, like

  9. Standleg Moving Granular Bed Filter development program

    SciTech Connect (OSTI)

    Newby, R.A.; Yang, W.C.; Smeltzer, E.E.

    1992-11-01T23:59:59.000Z

    The design, fabrication, and installation of the cold flow test facility has been completed. The SMGBF test facility shown in Figure 2 consists of a solids feed hopper, a transparent test vessel, a screw conveyor, a 55-gal drum for solids storage, a dust feeder, a baghouse filter, and the associated instrumentation for flow and pressure control and measurement. The standleg is 11-in ID by 3-ft long, and also transparent to facilitate observation. The crushed acrylic particles of characteristics shown in Table 1 are used as the bed media. The bed particles were selected, by maintaining the particle size while reducing the particle density, to simulate the minimum fluidization velocity expected under high-temperature, high-pressure conditions. By maintaining the particle size, the bed effectively simulates the bed packing and voidage in the moving bed which is directly related to the efficiency of particulate removal and pressure drop characteristics. The test facility performed as designed and no particular difficulties were encountered. The baseline data on pressure profiles across the stationary and the moving granular beds were obtained for gas face velocities up to 6 ft/s, higher than the minimum fluidization velocity of the bed material (5 ft/s), and no visible fluidization was observed at the base of the standleg. This confirms the operational feasibility of the compact SMGBF design.

  10. Standleg Moving Granular Bed Filter development program

    SciTech Connect (OSTI)

    Newby, R.A.; Yang, W.C.; Smeltzer, E.E.

    1992-01-01T23:59:59.000Z

    The design, fabrication, and installation of the cold flow test facility has been completed. The SMGBF test facility shown in Figure 2 consists of a solids feed hopper, a transparent test vessel, a screw conveyor, a 55-gal drum for solids storage, a dust feeder, a baghouse filter, and the associated instrumentation for flow and pressure control and measurement. The standleg is 11-in ID by 3-ft long, and also transparent to facilitate observation. The crushed acrylic particles of characteristics shown in Table 1 are used as the bed media. The bed particles were selected, by maintaining the particle size while reducing the particle density, to simulate the minimum fluidization velocity expected under high-temperature, high-pressure conditions. By maintaining the particle size, the bed effectively simulates the bed packing and voidage in the moving bed which is directly related to the efficiency of particulate removal and pressure drop characteristics. The test facility performed as designed and no particular difficulties were encountered. The baseline data on pressure profiles across the stationary and the moving granular beds were obtained for gas face velocities up to 6 ft/s, higher than the minimum fluidization velocity of the bed material (5 ft/s), and no visible fluidization was observed at the base of the standleg. This confirms the operational feasibility of the compact SMGBF design.

  11. A Quasispecies on a Moving Oasis

    E-Print Network [OSTI]

    Michael M. Desai; David R. Nelson

    2003-09-26T23:59:59.000Z

    A population evolving in an inhomogeneous environment will adapt differently to different regions. We study the conditions under which such a population can maintain adaptations to a particular region when that region is not stationary, but can move. In particular, we study a quasispecies living near a favorable patch ("oasis") in the middle of a large "desert." The population has two genetic states, one of which which conveys a relative advantage while in the oasis at the cost of a disadvantage in the desert. We consider the population dynamics when the oasis is moving, or equivalently some form of "wind" is blowing the population away from the oasis. We find that the ratio of the two types of individuals exhibits sharp transitions at particular oasis velocities. We calculate an extinction velocity, and a switching velocity above which the dominance switches from the oasis-adapted genotype to the desert-adapted one. This switching velocity is analagous to the quasispecies mutational error threshold. Above this velocity, the population cannot maintain adaptations to the properties of the oasis.

  12. Seismic Evaluation of Hydrocarbon Saturation in Deep-Water Reservoirs

    SciTech Connect (OSTI)

    Michael Batzle

    2006-04-30T23:59:59.000Z

    During this last period of the ''Seismic Evaluation of Hydrocarbon Saturation in Deep-Water Reservoirs'' project (Grant/Cooperative Agreement DE-FC26-02NT15342), we finalized integration of rock physics, well log analysis, seismic processing, and forward modeling techniques. Most of the last quarter was spent combining the results from the principal investigators and come to some final conclusions about the project. Also much of the effort was directed towards technology transfer through the Direct Hydrocarbon Indicators mini-symposium at UH and through publications. As a result we have: (1) Tested a new method to directly invert reservoir properties, water saturation, Sw, and porosity from seismic AVO attributes; (2) Constrained the seismic response based on fluid and rock property correlations; (3) Reprocessed seismic data from Ursa field; (4) Compared thin layer property distributions and averaging on AVO response; (5) Related pressures and sorting effects on porosity and their influence on DHI's; (6) Examined and compared gas saturation effects for deep and shallow reservoirs; (7) Performed forward modeling using geobodies from deepwater outcrops; (8) Documented velocities for deepwater sediments; (9) Continued incorporating outcrop descriptive models in seismic forward models; (10) Held an open DHI symposium to present the final results of the project; (11) Relations between Sw, porosity, and AVO attributes; (12) Models of Complex, Layered Reservoirs; and (14) Technology transfer Several factors can contribute to limit our ability to extract accurate hydrocarbon saturations in deep water environments. Rock and fluid properties are one factor, since, for example, hydrocarbon properties will be considerably different with great depths (high pressure) when compared to shallow properties. Significant over pressure, on the other hand will make the rocks behave as if they were shallower. In addition to the physical properties, the scale and tuning will alter our hydrocarbon indicators. Gas saturated reservoirs change reflection amplitudes significantly. The goal for the final project period was to systematically combine and document these various effects for use in deep water exploration and transfer this knowledge as clearly and effectively as possible.

  13. Natural Gas Regulatory Policy: Current Issues

    E-Print Network [OSTI]

    Watkins, G.

    NATURAL GAS REGULATORY roLICY: CURRENT ISSUES G. GAIL WATKINS Railroad Commission of Texas Austin, Texas ABSTRACT Many changes have occurred in recent months in both federal and state natural gas regulation. Those changes have increased... the options of industrial energy consumers for purchasing and moving natural gas. This panel viII discuss important developments in federal and state regulatory arenas and their impacts on purchasing options. Among the issues discussed viII be: 1...

  14. Up-Scaling Geochemical Reaction Rates Accompanying Acidic CO2-Saturated Brine Flow in Sandstone Aquifers

    E-Print Network [OSTI]

    New York at Stoney Brook, State University of

    1 Up-Scaling Geochemical Reaction Rates Accompanying Acidic CO2-Saturated Brine Flow in Sandstone models. As a step toward this, network flow models were used to simulate the flow of CO2-saturated brine

  15. Extensional wave attenuation and velocity in partially-saturated sand in the sonic frequency range

    SciTech Connect (OSTI)

    Liu, Z.; Rector, J.W.; Nihei, K.T.; Tomutsa, L.; Myer, L.R.; Nakagawa, S.

    2002-06-17T23:59:59.000Z

    Extensional wave attenuation and velocity measurements on a high permeability Monterey sand were performed over a range of gas saturations for imbibition and degassing conditions. These measurements were conducted using extensional wave pulse propagation and resonance over a 1 - 9 kHz frequency range for a hydrostatic confining pressure of 8.3 MPa. Analysis of the extensional wave data and the corresponding X-ray CT images of the gas saturation show strong attenuation resulting from the presence of the gas (QE dropped from 300 for the dry sand to 30 for the partially-saturated sand), with larger attenuation at a given saturation resulting from heterogeneous gas distributions. The extensional wave velocities are in agreement with Gassmann theory for the test with near-homogeneous gas saturation and with a patchy saturation model for the test with heterogeneous gas saturation. These results show that partially-saturated sands under moderate confining pressure can produce strong intrinsic attenuation for extensional waves.

  16. Consolidation theories for saturated-unsaturated soils and numerical simulation of residential buildings on expansive soils

    E-Print Network [OSTI]

    Zhang, Xiong

    2005-11-01T23:59:59.000Z

    , the physical meanings for the parameters in the constitutive laws for saturated-unsaturated are illustrated. A new set of the differential equations for the coupled two or three dimensional consolidation of saturated-unsaturated soils are proposed, together...

  17. Analytical methods for estimating saturated hydraulic conductivity in a tile-drained field

    E-Print Network [OSTI]

    Selker, John

    Analytical methods for estimating saturated hydraulic conductivity in a tile-drained field David E; Saturated hydraulic conductivity; Field scale; Tile drains; Water table 1. Introduction The use of spatially

  18. MobiEyes: Distributed Processing of Continuously Moving Queries on Moving Objects in a Mobile System

    E-Print Network [OSTI]

    Liu, Ling

    System Bugra Gedik and Ling Liu College of Computing, Georgia Institute of Technology {bgedik queries on moving objects in a centralized lo- cation monitoring system. Surprisingly, very few have of MobiEyes, a distributed real-time location monitoring system in a mobile environment. Mobieyes utilizes

  19. Event-triggered control with LQ optimality guarantees for saturated linear systems

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    Event-triggered control with LQ optimality guarantees for saturated linear systems A. Seuret , C of the domain of attraction. Keywords: event-based control, input saturation, linear quadratic performance 1 with event-triggered control algorithms for linear systems subject to plant input saturation. Hence, given

  20. Testing Oil Saturation Distribution in Migration Paths Using MRI1 Jianzhao Yan 1

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    - 1 - Testing Oil Saturation Distribution in Migration Paths Using MRI1 Jianzhao Yan 1 , Xiaorong media, and to measure oil and water saturation. Although this technique has great advantages compared14. Using15 MRI, the oil secondary migration paths are scanned to measure the saturation distribution during

  1. Asymptotical Computations for a Model of Flow in Saturated Porous Media

    E-Print Network [OSTI]

    Weinmüller, Ewa B.

    a variably saturated porous medium with exponential diffusivity, such as soil, rock or concrete is given by uAsymptotical Computations for a Model of Flow in Saturated Porous Media P. Amodio a , C.J. Budd b for an implicit second order ordinary differential equation which arises in models of flow in saturated porous

  2. Rapidly Moving Divertor Plates In A Tokamak

    SciTech Connect (OSTI)

    S. Zweben

    2011-05-16T23:59:59.000Z

    It may be possible to replace conventional actively cooled tokamak divertor plates with a set of rapidly moving, passively cooled divertor plates on rails. These plates would absorb the plasma heat flux with their thermal inertia for ~10-30 sec, and would then be removed from the vessel for processing. When outside the tokamak, these plates could be cooled, cleaned, recoated, inspected, and then returned to the vessel in an automated loop. This scheme could provide nearoptimal divertor surfaces at all times, and avoid the need to stop machine operation for repair of damaged or eroded plates. We describe various possible divertor plate designs and access geometries, and discuss an initial design for a movable and removable divertor module for NSTX-U.

  3. Moving Granular Bed Filter Development Program

    SciTech Connect (OSTI)

    Wilson, K.B.; Haas, J.C. [Combustion Power Co., San Mateo, CA (United States); Gupta, R.P.; Turk, B.S. [Research Triangle Inst., Research Triangle Park, NC (United States)

    1996-12-31T23:59:59.000Z

    For coal-fired power plants utilizing a gas turbine, the removal of ash particles is necessary to protect the turbine and to meet emission standards. Advantages are also evident for a filter system that can remove other coal-derived contaminants such as alkali, halogens, and ammonia. With most particulates and other contaminants removed, erosion and corrosion of turbine materials, as well as deposition of particles within the turbine, are reduced to acceptable levels. The granular bed filter is suitable for this task in a pressurized gasification or combustion environment. The objective of the base contract was to develop conceptual designs of moving granular bed filter (GBF) and ceramic candle filter technologies for control of particles from integrated gasification combined cycle (IGCC), pressurized fluidized-bed combustion (PFBC), and direct coal-fueled turbine (DCFT) systems. The results of this study showed that the GBF design compared favorably with the candle filter. Three program options followed the base contract. The objective of Option I, Component Testing, was to identify and resolve technical issues regarding GBF development for IGCC and PFBC environments. This program was recently completed. The objective of Option II, Filter Proof Tests, is to test and evaluate the moving GBF system at a government-furnished hot-gas cleanup test facility. This facility is located at Southern Company Services (SCS), Inc., Wilsonville, Alabama. The objective of Option III, Multicontaminant Control Using a GBF, is to develop a chemically reactive filter material that will remove particulates plus one or more of the following coal-derived contaminants: alkali, halogens, and ammonia.

  4. Laboratory analysis of fluid flow and solute transport through a variably saturated fracture embedded in porous tuff

    SciTech Connect (OSTI)

    Chuang, Y.; Haldeman, W.R.; Rasmussen, T.C.; Evans, D.D. [Arizona Univ., Tucson, AZ (USA). Dept. of Hydrology and Water Resources

    1990-02-01T23:59:59.000Z

    Laboratory techniques are developed that allow concurrent measurement of unsaturated matrix hydraulic conductivity and fracture transmissivity of fractured rock blocks. Two Apache Leap tuff blocks with natural fractures were removed from near Superior, Arizona, shaped into rectangular prisms, and instrumented in the laboratory. Porous ceramic plates provided solution to block tops at regulated pressures. Infiltration tests were performed on both test blocks. Steady flow testing of the saturated first block provided estimates of matrix hydraulic conductivity and fracture transmissivity. Fifteen centimeters of suction applied to the second block top showed that fracture flow was minimal and matrix hydraulic conductivity was an order of magnitude less than the first block saturated matrix conductivity. Coated-wire ion-selective electrodes monitored aqueous chlorided breakthrough concentrations. Minute samples of tracer solution were collected with filter paper. The techniques worked well for studying transport behavior at near-saturated flow conditions and also appear to be promising for unsaturated conditions. Breakthrough curves in the fracture and matrix, and a concentration map of chloride concentrations within the fracture, suggest preferential flows paths in the fracture and substantial diffusion into the matrix. Average travel velocity, dispersion coefficient and longitudinal dispersivity in the fracture are obtained. 67 refs., 54 figs., 23 tabs.

  5. Spin-glass model of QCD near saturation

    E-Print Network [OSTI]

    Robi Peschanski

    2006-03-15T23:59:59.000Z

    We establish a connection between the cascading of gluon momenta modeled with the diffusive approximation of the Balitsky-Fadin-Kuraev-Lipatov kernel and the thermodynamics of directed polymers on a tree with disorder. Using known results on the low-temperature spin-glass phase of this statistical-mechanic problem we describe the dynamical phase space of gluon transverse momenta near saturation including its fluctuation pattern. It exhibits a nontrivial clustering structure, analoguous to ``hot spots'', whose distributions are derived and possess universal features in common with other spin-glass systems.

  6. Elliptic flow from pQCD + saturation + hydro model

    E-Print Network [OSTI]

    K. J. Eskola; H. Niemi; P. V. Ruuskanen

    2007-05-15T23:59:59.000Z

    We have previously predicted multiplicities and transverse momentum spectra of hadrons for the most central LHC Pb+Pb collisions at $\\sqrt{s_{NN}}=5.5$ TeV using initial state for hydrodynamic evolution from pQCD + final state saturation model. By considering binary collision and wounded nucleon profiles we extend these studies to non-central collisions, and predict the $p_{T}$ dependence of minimum bias $v_{2}$ for pions at the LHC. For protons we also show how the $p_{T}$ dependence of $v_2$ changes from RHIC to the LHC.

  7. A micromechanical approach to modeling partly saturated soils

    E-Print Network [OSTI]

    Lamborn, Mark Jackson

    1986-01-01T23:59:59.000Z

    . Values for these dimensi onless quanti ti es are not available at present. Approxi mat1 ons for the loads transmi tted by indi vidual part1cles are gi ven. ACKNOWLEOGEMENTS I would like to thank Dr. D. H. Allen, Dr. R. L. Lytton, and Dr. R. A... Values of the Degree of Saturation, Ds, I3 and the Angle, zm, for the Case of the Mixture Phase Acting as a Binder 139 Table 3. 4. Initial Volume Tractions and Maximum Tensile Stressed Volume of the Mixture Phase for the Different Packing...

  8. Tunable polarity of the Casimir force based on saturated ferrites

    SciTech Connect (OSTI)

    Zeng Ran [School of Telecommunication, Hangzhou Dianzi University, Hangzhou 310018 (China); Yang Yaping [Department of Physics, Tongji University, Shanghai 200092 (China); Beijing Computational Science Research Center, Beijing 100084 (China)

    2011-01-15T23:59:59.000Z

    We study the polarity of the Casimir force between two different parallel slabs separated by vacuum when the saturated ferrite materials under the influence of an external magnetic field are taken into consideration. Between the ordinary dielectric slab and the ferrite slab, repulsive Casimir force may be observed by adjusting the applied magnetic field. For the ferrite material, we consider the frequency dependence of the permeability modified by the external magnetic field to analyze the formation of the repulsive Casimir force. The restoring force, which means the transition of the force polarity from repulsion to attraction with the increasing slab separation, can also be obtained between two different ferrite slabs.

  9. Application of Metagenomics for Identification of Novel Petroleum Hydrocarbon Degrading Enzymes in Natural Asphalts from the Rancho La Brea Tar Pits

    E-Print Network [OSTI]

    Baquiran, Jean-Paul Mendoza

    2010-01-01T23:59:59.000Z

    and the origin of heavy oil. Nature, 426, 344-352. HEITKAMP,natural asphalts and heavy oil compounds. A major questionmainly of asphalts and heavy oils, which have saturated into

  10. SEISMIC EVALUATION OF HYDROCARBON SATURATION IN DEEP-WATER RESERVOIRS

    SciTech Connect (OSTI)

    Michael Batzle; D-h Han; R. Gibson; Huw James

    2005-08-12T23:59:59.000Z

    We are now entering the final stages of our ''Seismic Evaluation of Hydrocarbon Saturation in Deep-Water Reservoirs'' project (Grant/Cooperative Agreement DE-FC26-02NT15342). We have now developed several techniques to help distinguish economic hydrocarbon deposits from false ''Fizz'' gas signatures. These methods include using the proper in situ rock and fluid properties, evaluating interference effects on data, and doing better constrained inversions for saturations. We are testing these techniques now on seismic data from several locations in the Gulf of Mexico. In addition, we are examining the use of seismic attenuation as indicated by frequency shifts below potential reservoirs. During this quarter we have: Began our evaluation of our latest data set over the Neptune Field; Developed software for computing composite reflection coefficients; Designed and implemented stochastic turbidite reservoir models; Produced software & work flow to improve frequency-dependent AVO analysis; Developed improved AVO analysis for data with low signal-to-noise ratio; and Examined feasibility of detecting fizz gas using frequency attenuation. Our focus on technology transfer continues, both by generating numerous presentations for the upcoming SEG annual meeting, and by beginning our planning for our next DHI minisymposium next spring.

  11. CIRCULATING MOVING BED COMBUSTION PROOF OF CONCEPT

    SciTech Connect (OSTI)

    Jukkola, Glen

    2010-06-30T23:59:59.000Z

    Circulating Moving Bed (CMB) combustion technology has its roots in traditional circulating fluidized bed technology and involves a novel method of solid fuel combustion and heat transfer. CMB technology represents a step change in improved performance and cost relative to conventional PC and FBC boilers. The CMB heat exchanger preheats the energy cycle working fluid, steam or air, to the high temperature levels required in systems for advanced power generation. Unique features of the CMB are the reduction of the heat transfer surfaces by about 60% as a result of the enhanced heat transfer rates, flexibility of operation, and about 30% lower cost over existing technology. The CMB Phase I project ran from July 2001 through March 2003. Its objective was to continue development of the CMB technology with a series of proof of concept tests. The tests were conducted at a scale that provided design data for scale up to a demonstration plant. These objectives were met by conducting a series of experiments in ALSTOM Powers Multi-use Test Facility (MTF). The MTF was modified to operate under CMB conditions of commercial interest. The objective of the tests were to evaluate gas-to-solids heat transfer in the upper furnace, assess agglomeration in the high temperature CMB bubbling bed, and evaluate solids-to-tube heat transfer in the moving bed heat exchanger. The Phase I program results showed that there are still some significant technical uncertainties that needed to be resolved before the technology can be confidently scaled up for a successful demonstration plant design. Work remained in three primary areas: scale up of gas to solid heat transfer high temperature finned surface design the overall requirements of mechanical and process design. The CMB Phase II workscope built upon the results of Phase I and specifically addressed the remaining technical uncertainties. It included a scaled MTF heat transfer test to provide the necessary data to scale up gas-to-solids heat transfer. A stress test rig was built and tested to provide validation data for a stress model needed to support high temperature finned surface design. Additional cold flow model tests and MTF tests were conducted to address mechanical and process design issues. This information was then used to design and cost a commercial CMB design concept. Finally, the MBHE was reconfigured into a slice arrangement and tested for an extended duration at a commercial CFB plant.

  12. Statistical analysis of liquid seepage in partially saturated heterogeneous fracture systems

    SciTech Connect (OSTI)

    Liou, T.S.

    1999-12-01T23:59:59.000Z

    Field evidence suggests that water flow in unsaturated fracture systems may occur along fast preferential flow paths. However, conventional macroscale continuum approaches generally predict the downward migration of water as a spatially uniform wetting front subjected to strong inhibition into the partially saturated rock matrix. One possible cause of this discrepancy may be the spatially random geometry of the fracture surfaces, and hence, the irregular fracture aperture. Therefore, a numerical model was developed in this study to investigate the effects of geometric features of natural rock fractures on liquid seepage and solute transport in 2-D planar fractures under isothermal, partially saturated conditions. The fractures were conceptualized as 2-D heterogeneous porous media that are characterized by their spatially correlated permeability fields. A statistical simulator, which uses a simulated annealing (SA) algorithm, was employed to generate synthetic permeability fields. Hypothesized geometric features that are expected to be relevant for seepage behavior, such as spatially correlated asperity contacts, were considered in the SA algorithm. Most importantly, a new perturbation mechanism for SA was developed in order to consider specifically the spatial correlation near conditioning asperity contacts. Numerical simulations of fluid flow and solute transport were then performed in these synthetic fractures by the flow simulator TOUGH2, assuming that the effects of matrix permeability, gas phase pressure, capillary/permeability hysteresis, and molecular diffusion can be neglected. Results of flow simulation showed that liquid seepage in partially saturated fractures is characterized by localized preferential flow, along with bypassing, funneling, and localized ponding. Seepage pattern is dominated by the fraction of asperity contracts, and their shape, size, and spatial correlation. However, the correlation structure of permeability field is less important than the spatial correlation of asperity contacts. A faster breakthrough was observed in fractures subjected to higher normal stress, accompanied with a nonlinearly decreasing trend of the effective permeability. Interestingly, seepage dispersion is generally higher in fractures with intermediate fraction of asperity contacts; but it is lower for small or large fractions of asperity contacts. However, it may become higher if the ponding becomes significant. Transport simulations indicate that tracers bypass dead-end pores and travel along flow paths that have less flow resistance. Accordingly, tracer breakthrough curves generally show more spreading than breakthrough curves for water. Further analyses suggest that the log-normal time model generally fails to fit the breakthrough curves for water, but it is a good approximation for breakthrough curves for the tracer.

  13. Casimir Friction Force for Moving Harmonic Oscillators

    E-Print Network [OSTI]

    Johan S. Hye; Iver Brevik

    2011-11-21T23:59:59.000Z

    Casimir friction is analyzed for a pair of dielectric particles in relative motion. We first adopt a microscopic model for harmonically oscillating particles at finite temperature T moving non-relativistically with constant velocity. We use a statistical-mechanical description where time-dependent correlations are involved. This description is physical and direct, and, in spite of its simplicity, is able to elucidate the essentials of the problem. This treatment elaborates upon, and extends, an earlier theory of ours back in 1992. The energy change Delta E turns out to be finite in general, corresponding to a finite friction force. In the limit of zero temperature the formalism yields, however, Delta E ->0, this being due to our assumption about constant velocity, meaning slowly varying coupling. For couplings varying more rapidly, there will also be a finite friction force at T=0. As second part of our work, we consider the friction problem using time-dependent perturbation theory. The dissipation, basically a second order effect, is obtainable with the use of first order theory, the reason being the absence of cross terms due to uncorrelated phases of eigenstates. The third part of the present paper is to demonstrate explicitly the equivalence of our results with those recently obtained by Barton (2010); this being not a trivial task since the formal results are seemingly quite different from each other.

  14. A Case for Climate Neutrality: Case Studies on Moving Towards...

    Open Energy Info (EERE)

    for Climate Neutrality: Case Studies on Moving Towards a Low Carbon Economy Jump to: navigation, search Tool Summary LAUNCH TOOL Name: A Case for Climate Neutrality: Case Studies...

  15. ORNL researchers make first observation of atoms moving inside...

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

    observation of atoms moving inside bulk material Selected frames from a sequence of scanning transmission electron microscope images showing the diffusion pathway of a Ce dopant...

  16. JCESR: Moving Beyond Lithium-Ion | Argonne National Laboratory

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

    JCESR: Moving Beyond Lithium-Ion Share Topic Energy Energy usage Energy storage Batteries Browse By - Any - Energy -Energy efficiency --Vehicles ---Alternative fuels ---Automotive...

  17. agonist receptors move: Topics by E-print Network

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

    end, we consider the Pachner moves which generate the most basic and general simplicial evolution scheme. The linearized regime features a vertex displacement (diffeomorphism')...

  18. Evolution equation of moving defects: dislocations and inclusions

    E-Print Network [OSTI]

    Markenscoff, Xanthippi

    2010-01-01T23:59:59.000Z

    9483-8 ORIGINAL PAPER Evolution equation of moving defects:Springerlink.com Abstract Evolution equations, or equationsof dissipation, and the evolution equation for a plane

  19. EGS rock reactions with Supercritical CO2 saturated with water and water saturated with Supercritical CO2

    SciTech Connect (OSTI)

    Earl D. Mattson; Travis L. McLing; William Smith; Carl Palmer

    2013-02-01T23:59:59.000Z

    EGS using CO2 as a working fluid will likely involve hydro-shearing low-permeability hot rock reservoirs with a water solution. After that process, the fractures will be flushed with CO2 that is maintained under supercritical conditions (> 70 bars). Much of the injected water in the main fracture will be flushed out with the initial CO2 injection; however side fractures, micro fractures, and the lower portion of the fracture will contain connate water that will interact with the rock and the injected CO2. Dissolution/precipitation reactions in the resulting scCO2/brine/rock systems have the potential to significantly alter reservoir permeability, so it is important to understand where these precipitates form and how are they related to the evolving free connate water in the system. To examine dissolution / precipitation behavior in such systems over time, we have conducted non-stirred batch experiments in the laboratory with pure minerals, sandstone, and basalt coupons with brine solution spiked with MnCl2 and scCO2. The coupons are exposed to liquid water saturated with scCO2 and extend above the water surface allowing the upper portion of the coupons to be exposed to scCO2 saturated with water. The coupons were subsequently analyzed using SEM to determine the location of reactions in both in and out of the liquid water. Results of these will be summarized with regard to significance for EGS with CO2 as a working fluid.

  20. Centrifuge modeling of LNAPL transport in partially saturated sand

    SciTech Connect (OSTI)

    Esposito, G.; Allersma, H.G.B.; Selvadurai, A.P.S.

    1999-12-01T23:59:59.000Z

    Model tests were performed at the Geotechnical Centrifuge Facility of Delft University of Technology, The Netherlands, to examine the mechanics of light nonaqueous phase liquid (LNAPL) movement in a partially saturated porous granular medium. The experiment simulated a 2D spill of LNAPL in an unsaturated sand prepared at two values of porosity. The duration of the centrifuge model tests corresponded to a prototype equivalent of 110 days. The choice of modeling a 2D flow together with the use of a transparent container enabled direct visual observation of the experiments. Scaling laws developed in connection with other centrifuge modeling studies were used to support the test results. Tests were conducted at two different centrifuge accelerations to verify, by means of the modeling of models technique, the similitude between the different experiments. The paper presents details of the experimental methodologies and the measuring techniques used to evaluate the final distribution of water and LNAPL content in the soils.

  1. Reducing noise in moving-grid codes with strongly-centroidal Lloyd mesh regularization

    E-Print Network [OSTI]

    Mocz, Philip; Pakmor, Rudiger; Genel, Shy; Springel, Volker; Hernquist, Lars

    2015-01-01T23:59:59.000Z

    A method for improving the accuracy of hydrodynamical codes that use a moving Voronoi mesh is described. Our scheme is based on a new regularization scheme that constrains the mesh to be centroidal to high precision while still allowing the cells to move approximately with the local fluid velocity, thereby retaining the quasi-Lagrangian nature of the approach. Our regularization technique significantly reduces mesh noise that is attributed to changes in mesh topology and deviations from mesh regularity. We demonstrate the advantages of our method on various test problems, and note in particular improvements obtained in handling shear instabilities, mixing, and in angular momentum conservation. Calculations of adiabatic jets in which shear excites Kelvin Helmholtz instability show reduction of mesh noise and entropy generation. In contrast, simulations of the collapse and formation of an isolated disc galaxy are nearly unaffected, showing that numerical errors due to the choice of regularization do not impact ...

  2. Three Pile Nim with Move Blocking Arthur Holshouser

    E-Print Network [OSTI]

    Reiter, Harold

    Three Pile Nim with Move Blocking Arthur Holshouser 3600 Bullard St. Charlotte, NC, USA Harold hbreiter@email.uncc.edu 1 #12;Three Pile Nim with Blocking Nim, also known as Bouton's Nim, is a two player for ordinary nim. Specifically, we explore a three pile game with two players, a moving player and a blocking

  3. Engineering The only online degree program focused on moving

    E-Print Network [OSTI]

    Van Veen, Barry D.

    Master of Engineering in Engine Systems The only online degree program focused on moving the internal combustion industry forward through graduate education of working engineers. Master of Engineering in Engine Systems The only online degree program focused on moving the internal combustion industry forward

  4. When your department is planning to move: An Ergonomics Checklist

    E-Print Network [OSTI]

    Jacobs, Lucia

    When your department is planning to move: An Ergonomics Checklist A proactive, organized approach for the move. Involve your computer workstation evaluator(s). Identify additional ergonomic evaluator evaluators. UC Berkeley's Ergonomics Program for Faculty and Staff ERGONOMICS@WORK (continues on page 2) #12

  5. Continuous k-Means Monitoring over Moving Objects

    E-Print Network [OSTI]

    Papadias, Dimitris

    Continuous k-Means Monitoring over Moving Objects Zhenjie Zhang, Yin Yang, Anthony K.H. Tung, and Dimitris Papadias Abstract-- Given a dataset P, a k-means query returns k points in space (called centers study continuous k-means computation at a server that monitors a set of moving objects. Re-evaluating k-means

  6. Canonical linearized Regge Calculus: counting lattice gravitons with Pachner moves

    E-Print Network [OSTI]

    Philipp A. Hoehn

    2014-11-24T23:59:59.000Z

    We afford a systematic and comprehensive account of the canonical dynamics of 4D Regge Calculus perturbatively expanded to linear order around a flat background. To this end, we consider the Pachner moves which generate the most basic and general simplicial evolution scheme. The linearized regime features a vertex displacement (`diffeomorphism') symmetry for which we derive an abelian constraint algebra. This permits to identify gauge invariant `lattice gravitons' as propagating curvature degrees of freedom. The Pachner moves admit a simple method to explicitly count the gauge and `graviton' degrees of freedom on an evolving triangulated hypersurface and we clarify the distinct role of each move in the dynamics. It is shown that the 1-4 move generates four `lapse and shift' variables and four conjugate vertex displacement generators; the 2-3 move generates a `graviton'; the 3-2 move removes one `graviton' and produces the only non-trivial equation of motion; and the 4-1 move removes four `lapse and shift' variables and trivializes the four conjugate symmetry generators. It is further shown that the Pachner moves preserve the vertex displacement generators. These results may provide new impetus for exploring `graviton dynamics' in discrete quantum gravity models.

  7. MANAGING UNCERTAIN TRAJECTORIES OF MOVING OBJECTS WITH DOMINO

    E-Print Network [OSTI]

    Wolfson, Ouri E.

    Hu, Hai Lin, Fengli Zhang Naphtali RisheÝ Database and Mobile Computing Laboratory Department words: Databases and Information Systems Integration, Moving Objects Databases Abstract: This work describes the features of the DOMINO (Database fOr MovINg Objects) system, which brings several novelties

  8. The Geometry of Uncertainty in Moving Objects Databases

    E-Print Network [OSTI]

    Wolfson, Ouri E.

    The Geometry of Uncertainty in Moving Objects Databases Goce Trajcevski1 , Ouri Wolfson1@arl.mil Abstract. This work addresses the problem of querying moving ob- jects databases. which capture- ing, constructing, and querying a trajectories database. We propose to model a trajectory as a 3D

  9. Natural gas pipeline technology overview.

    SciTech Connect (OSTI)

    Folga, S. M.; Decision and Information Sciences

    2007-11-01T23:59:59.000Z

    The United States relies on natural gas for one-quarter of its energy needs. In 2001 alone, the nation consumed 21.5 trillion cubic feet of natural gas. A large portion of natural gas pipeline capacity within the United States is directed from major production areas in Texas and Louisiana, Wyoming, and other states to markets in the western, eastern, and midwestern regions of the country. In the past 10 years, increasing levels of gas from Canada have also been brought into these markets (EIA 2007). The United States has several major natural gas production basins and an extensive natural gas pipeline network, with almost 95% of U.S. natural gas imports coming from Canada. At present, the gas pipeline infrastructure is more developed between Canada and the United States than between Mexico and the United States. Gas flows from Canada to the United States through several major pipelines feeding U.S. markets in the Midwest, Northeast, Pacific Northwest, and California. Some key examples are the Alliance Pipeline, the Northern Border Pipeline, the Maritimes & Northeast Pipeline, the TransCanada Pipeline System, and Westcoast Energy pipelines. Major connections join Texas and northeastern Mexico, with additional connections to Arizona and between California and Baja California, Mexico (INGAA 2007). Of the natural gas consumed in the United States, 85% is produced domestically. Figure 1.1-1 shows the complex North American natural gas network. The pipeline transmission system--the 'interstate highway' for natural gas--consists of 180,000 miles of high-strength steel pipe varying in diameter, normally between 30 and 36 inches in diameter. The primary function of the transmission pipeline company is to move huge amounts of natural gas thousands of miles from producing regions to local natural gas utility delivery points. These delivery points, called 'city gate stations', are usually owned by distribution companies, although some are owned by transmission companies. Compressor stations at required distances boost the pressure that is lost through friction as the gas moves through the steel pipes (EPA 2000). The natural gas system is generally described in terms of production, processing and purification, transmission and storage, and distribution (NaturalGas.org 2004b). Figure 1.1-2 shows a schematic of the system through transmission. This report focuses on the transmission pipeline, compressor stations, and city gates.

  10. ' low-frequency seismic waves in 'fluid-saturated layered rocks

    E-Print Network [OSTI]

    papers report that reflection of lowfrequency seismic. ' waves at a boundary between two ?uid-saturated rocks is not significantly modified by 'the presence of

  11. X-ray CT Observations of Methane Hydrate Distribution Changes over Time in a Natural Sediment Core from the BPX-DOE-USGS Mount Elbert Gas Hydrate Stratigraphic Test Well

    SciTech Connect (OSTI)

    Kneafsey, T.J.; Rees, E.V.L.

    2010-03-01T23:59:59.000Z

    When maintained under hydrate-stable conditions, methane hydrate in laboratory samples is often considered a stable and immobile solid material. Currently, there do not appear to be any studies in which the long-term redistribution of hydrates in sediments has been investigated in the laboratory. These observations are important because if the location of hydrate in a sample were to change over time (e.g. by dissociating at one location and reforming at another), the properties of the sample that depend on hydrate saturation and pore space occupancy would also change. Observations of hydrate redistribution under stable conditions are also important in understanding natural hydrate deposits, as these may also change over time. The processes by which solid hydrate can move include dissociation, hydrate-former and water migration in the gas and liquid phases, and hydrate formation. Chemical potential gradients induced by temperature, pressure, and pore water or host sediment chemistry can drive these processes. A series of tests were performed on a formerly natural methane-hydrate-bearing core sample from the BPX-DOE-USGS Mount Elbert Gas Hydrate Stratigraphic Test Well, in order to observe hydrate formation and morphology within this natural sediment, and changes over time using X-ray computed tomography (CT). Long-term observations (over several weeks) of methane hydrate in natural sediments were made to investigate spatial changes in hydrate saturation in the core. During the test sequence, mild buffered thermal and pressure oscillations occurred within the sample in response to laboratory temperature changes. These oscillations were small in magnitude, and conditions were maintained well within the hydrate stability zone.

  12. Evaluating the Influence of Pore Architecture and Initial Saturation on Wettability and Relative Permeability in Heterogeneous, Shallow-Shelf Carbonates

    SciTech Connect (OSTI)

    Alan P. Byrnes; Saibal Bhattacharya; John Victorine; Ken Stalder

    2007-09-30T23:59:59.000Z

    Thin (3-40 ft thick), heterogeneous, limestone and dolomite reservoirs, deposited in shallow-shelf environments, represent a significant fraction of the reservoirs in the U.S. midcontinent and worldwide. In Kansas, reservoirs of the Arbuckle, Mississippian, and Lansing-Kansas City formations account for over 73% of the 6.3 BBO cumulative oil produced over the last century. For these reservoirs basic petrophysical properties (e.g., porosity, absolute permeability, capillary pressure, residual oil saturation to waterflood, resistivity, and relative permeability) vary significantly horizontally, vertically, and with scale of measurement. Many of these reservoirs produce from structures of less than 30-60 ft, and being located in the capillary pressure transition zone, exhibit vertically variable initial saturations and relative permeability properties. Rather than being simpler to model because of their small size, these reservoirs challenge characterization and simulation methodology and illustrate issues that are less apparent in larger reservoirs where transition zone effects are minor and most of the reservoir is at saturations near S{sub wirr}. These issues are further augmented by the presence of variable moldic porosity and possible intermediate to mixed wettability and the influence of these on capillary pressure and relative permeability. Understanding how capillary-pressure properties change with rock lithology and, in turn, within transition zones, and how relative permeability and residual oil saturation to waterflood change through the transition zone is critical to successful reservoir management and as advanced waterflood and improved and enhanced recovery methods are planned and implemented. Major aspects of the proposed study involve a series of tasks to measure data to reveal the nature of how wettability and drainage and imbibition oil-water relative permeability change with pore architecture and initial water saturation. Focus is placed on carbonate reservoirs of widely varying moldic pore systems that represent the major of reservoirs in Kansas and are important nationally and worldwide. A goal of the project is to measure wettability, using representative oils from Kansas fields, on a wide range of moldic-porosity lithofacies that are representative of Kansas and midcontinent shallow-shelf carbonate reservoirs. This investigation will discern the relative influence of wetting and pore architecture. In the midcontinent, reservoir water saturations are frequently greater than 'irreducible' because many reservoirs are largely in the capillary transition zone. This can change the imbibition oil-water relative permeability relations. Ignoring wettability and transition-zone relative permeabilities in reservoir modeling can lead to over- and under-prediction of oil recovery and recovery rates, and less effective improved recovery management. A goal of this project is to measure drainage and imbibition oil-water relative permeabilities for a large representative range of lithofacies at differ ent initial water saturations to obtain relations that can be applied everywhere in the reservoir. The practical importance of these relative permeability and wettability models will be demonstrated by using reservoir simulation studies on theoretical/generic and actual reservoir architectures. The project further seeks to evaluate how input of these new models affects reservoir simulation results at varying scales. A principal goal is to obtain data that will allow us to create models that will show how to accurately simulate flow in the shallow-structure, complex carbonate reservoirs that lie in the transition zone. Tasks involved to meet the project objectives include collection and consolidation of available data into a publicly accessible relational digital database and collection of oil and rock samples from carbonate fields around the state (Task 1). Basic properties of these rocks and oils will be measured and used in wettability tests. Comparison will be performed between crude and synthetic oil wettability and

  13. Stochastic model of the electrodeposition process in systems with moving multielement electrodes

    SciTech Connect (OSTI)

    Kaidrikov, R.A.; Gudin, N.V.; Nuriev, N.K.; Zhuravlev, B.L.; Zil'berg, A.I.

    1988-07-01T23:59:59.000Z

    A stochastic model was constructed in this work to reflect the random nature of the electrodeposition process in systems with moving multielement electrodes. The effect of such parameters as the electrolysis time, the current distribution inside the electrode, the current density, and the loading volume of the drum on the variance of the coating thickness was analyzed. The proposed model reflects the process of electrodeposition on the qualitative level and can be examined as a basis for developing stochastic models of evaluating the parameters of these processes. Data for nickel and zinc plating are given.

  14. Method for image reconstruction of moving radionuclide source distribution

    DOE Patents [OSTI]

    Stolin, Alexander V.; McKisson, John E.; Lee, Seung Joon; Smith, Mark Frederick

    2012-12-18T23:59:59.000Z

    A method for image reconstruction of moving radionuclide distributions. Its particular embodiment is for single photon emission computed tomography (SPECT) imaging of awake animals, though its techniques are general enough to be applied to other moving radionuclide distributions as well. The invention eliminates motion and blurring artifacts for image reconstructions of moving source distributions. This opens new avenues in the area of small animal brain imaging with radiotracers, which can now be performed without the perturbing influences of anesthesia or physical restraint on the biological system.

  15. VAM2D: Variably saturated analysis model in two dimensions

    SciTech Connect (OSTI)

    Huyakorn, P.S.; Kool, J.B.; Wu, Y.S. (HydroGeoLogic, Inc., Herndon, VA (United States))

    1991-10-01T23:59:59.000Z

    This report documents a two-dimensional finite element model, VAM2D, developed to simulate water flow and solute transport in variably saturated porous media. Both flow and transport simulation can be handled concurrently or sequentially. The formulation of the governing equations and the numerical procedures used in the code are presented. The flow equation is approximated using the Galerkin finite element method. Nonlinear soil moisture characteristics and atmospheric boundary conditions (e.g., infiltration, evaporation and seepage face), are treated using Picard and Newton-Raphson iterations. Hysteresis effects and anisotropy in the unsaturated hydraulic conductivity can be taken into account if needed. The contaminant transport simulation can account for advection, hydrodynamic dispersion, linear equilibrium sorption, and first-order degradation. Transport of a single component or a multi-component decay chain can be handled. The transport equation is approximated using an upstream weighted residual method. Several test problems are presented to verify the code and demonstrate its utility. These problems range from simple one-dimensional to complex two-dimensional and axisymmetric problems. This document has been produced as a user's manual. It contains detailed information on the code structure along with instructions for input data preparation and sample input and printed output for selected test problems. Also included are instructions for job set up and restarting procedures. 44 refs., 54 figs., 24 tabs.

  16. Saturated and efficient blue phosphorescent organic light emitting devices with Lambertian angular emission

    E-Print Network [OSTI]

    Saturated and efficient blue phosphorescent organic light emitting devices with Lambertian angular a microcavity to optimize the color of a phosphorescent organic light emitting device OLED based on the-sky blue.1063/1.2742577 The development of a stable, efficient, and saturated blue remains an important goal for phosphorescent organic

  17. Linear Feedback Control Input under Actuator Saturation: a Takagi-Sugeno Approach

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    Linear Feedback Control Input under Actuator Saturation: a Takagi-Sugeno Approach Souad Bezzaoucha into account the effect of saturation throughout the design procedure, a controller that may be linear. The third strategy is a two-step approach in which a nominal linear controller is first constructed

  18. Inelastic scattering and current saturation in graphene Vasili Perebeinos* and Phaedon Avouris

    E-Print Network [OSTI]

    Perebeinos, Vasili

    . The discrepancy is due to the self-heating effect which lowers substantially the value of the saturated velocity about the role of self-heating and elastic scattering on the current satu- ration. High bias find that the self-heating of graphene on SiO2 limits significantly the value of the saturated current

  19. Extensional wave attenuation and velocity in partially saturated sand in the sonic frequency range

    SciTech Connect (OSTI)

    Liu, Z.; Rector, J.W.; Nihei, K.T.; Tomutsa, L.; Myer, L.R.; Nakagawa, S.

    2001-08-10T23:59:59.000Z

    Extensional wave attenuation and velocity measurements on a high permeability Monterey sand were performed over a range of gas saturations for imbibition and degassing conditions. These measurements were conducted using extensional wave pulse propagation and resonance over a 1-9 kHz frequency range for a hydrostatic confining pressure of 8.3 MPa. Analysis of the extensional wave data and the corresponding X-ray CT images of the gas saturation show strong attenuation resulting from the presence of the gas (Q{sub E} dropped from 300 for the dry sand to 30 for the partially-saturated sand), with larger attenuation at a given saturation resulting from heterogeneous gas distributions. The extensional wave velocities are in agreement with Gassmann theory for the test with near-homogeneous gas saturation and with a patchy saturation model for the test with heterogeneous gas saturation. These results show that partially-saturated sands under moderate confining pressure can produce strong intrinsic attenuation for extensional waves.

  20. Annual Logging Symposium, June 1620, 2012 IMPROVED ASSESSMENT OF IN-SITU FLUID SATURATION WITH

    E-Print Network [OSTI]

    Torres-Verdn, Carlos

    -bedded gas formations of the Wamsutter basin invaded with water-base mud, wherein residual hydrocarbon with water but in which gas saturation is still higher than residual saturation. It was also found are mobile or residual. In some instances, high vertical heterogeneity of rock properties (e.g. across thinly

  1. 0.0.1 Saturated models What follows is the main definition of model theory.

    E-Print Network [OSTI]

    0.0.1 Saturated models What follows is the main definition of model theory. Definition: Let x's an algebraically closed field. It's also 1-saturated. Understanding a theory is understanding its types. Definition there is only 1 variable.) However, there is clearly no element satisfying these statements in N. Definition

  2. Non-quadratic Lyapunov functions for performance analysis of saturated systems

    E-Print Network [OSTI]

    Hu, Tingshu

    Non-quadratic Lyapunov functions for performance analysis of saturated systems Tingshu Hu, Andrew R. Teel and Luca Zaccarian Abstract-- In a companion paper [14], we developed a sys- tematic Lyapunov approach to the regional stability and per- formance analysis of saturated systems via quadratic Lyapunov

  3. acoustic waves moving: Topics by E-print Network

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

    Propagation in a Thin Moving Fluid Mathematical Physics (arXiv) Summary: We study the propagation of acoustic waves in a fluid that is contained in a thin two-dimensional tube,...

  4. Unfolding time : a projective model for the moving image

    E-Print Network [OSTI]

    Watkins, Elizabeth Anne

    2012-01-01T23:59:59.000Z

    Humanity's desire to record events happening in time has spawned a lineage of moving-image transcription systems, from early cinematographs to contemporary digital camcorder equipment. These technologies have arisen, ...

  5. Laboratory testing procedure for evaluation of moving bed catalyst attrition

    SciTech Connect (OSTI)

    Doolin, P.K.; Gainer, D.M.; Hoffman, J.F. (Ashland Petroleum Co., KY (United States). Research and Development Dept.)

    1993-11-01T23:59:59.000Z

    A laboratory scale attrition test has been designed to simulate particle-particle and particle-wall attrition forces which are similar to those experience in commercial moving bed units. The modified drum test uses two concentric rotating drums to induce particle breakage. Using this test, the distribution of particle shapes and sizes produced by catalyst attrition in a moving bed unit have been successfully duplicated.

  6. Concrete Company Moving to Natural Gas with Clean Cities | Department of

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011AT&T, Inc.'sEnergyTexas1.Space DataEnergyCompressedOil, and Gas Sectors in

  7. Mimicking Nature

    E-Print Network [OSTI]

    Wythe, Kathy

    2007-01-01T23:59:59.000Z

    into lakes and rivers, and the impact different water management decisions could have. ?We?re trying to mimic nature,? said Dr. Jeff Arnold, research leader and agricultural engineer for the Grassland Soil and Water Research Laboratory in Temple, part..., director of Texas A&M University?s Spatial Sciences Laboratory and professor in the Departments of Ecosystem Science and MIMICKING NATURE Computer model helps manage nation?s, world?s waters #2; Management, and Biological and Agricultural Engineering...

  8. Naturalness redux

    E-Print Network [OSTI]

    Marco Fabbrichesi; Alfredo Urbano

    2015-04-21T23:59:59.000Z

    The idea of naturalness, as originally conceived, refers only to the finite renormalization of the Higgs boson mass induced by the introduction of heavier states. In this respect, naturalness is still a powerful heuristic principle in model building beyond the standard model whenever new massive states are coupled to the Higgs field. The most compelling case is provided by the generation of neutrino masses. In this paper we confront this problem from a new perspective. The right-handed sector responsible for the seesaw mechanism---which introduces a large energy threshold above the electroweak scale---is made supersymmetric to comply with naturalness while the standard model is left unchanged and non-supersymmetric. Cancellations necessary to the naturalness requirement break down only at two loops, thus offering the possibility to increase the right-handed neutrino mass scale up to one order of magnitude above the usual values allowed by naturalness. If also the weak boson sector of the standard model is made supersymmetric, cancellations break down at three loops and the scale of new physics can be further raised. In the type-I seesaw, this implementation provides right-handed neutrino masses that are natural and at the same time large enough to give rise to baryogenesis (via leptogenesis). The model contains a dark matter candidate and distinctive new physics in the leptonic sector.

  9. Enhanced heat transfer in partially-saturated hydrothermal systems

    SciTech Connect (OSTI)

    Bixler, N.E.; Carrigan, C.R.

    1986-01-01T23:59:59.000Z

    The role of capillarity is potentially important for determining heat transfer in hydrothermal regions. Capillarity allows mixing of phases in liquid/vapor systems and results in enhanced two-phase convection. Comparisons involving a numerical model with capillarity and analytical models without indicate that heat transfer can be enhanced by about an order of magnitude. Whether capillarity can be important for a particular hydrothermal region will depend on the nature of mineral precipitation as well as pore and fracture size distributions.

  10. Characterization of a Saturated and Flexible Aliphatic Polyol Anion Receptor

    SciTech Connect (OSTI)

    Shokri, Alireza; Schmidt, Jacob C.; Wang, Xue B.; Kass, Steven R.

    2012-10-17T23:59:59.000Z

    Nature employs flexible molecules to bind anions in a variety of physiologically important processes whereas supramolecular chemists have been designing rigid substrates that minimize or eliminate intramolecular hydrogen bond interactions to carry out anion recogni-tion. Herein, the association of a flexible polyhydroxy alkane with chloride ion is described and the bound re-ceptor is characterized by infrared and photoelectron spectroscopy in the gas phase, computations, and its bind-ing constant as a function of temperature in acetonitrile.

  11. Processes in microbial transport in the natural subsurface Timothy R. Ginn a,*, Brian D. Wood b

    E-Print Network [OSTI]

    Clement, Prabhakar

    Processes in microbial transport in the natural subsurface Timothy R. Ginn a,*, Brian D. Wood b microbial transport in the saturated subsurface. We begin with the conceptual models of the biophase of bioremediation and pathogen transport in the natural subsurface. ? 2002 Elsevier Science Ltd. All rights reserved

  12. Application of computed tomography to enhanced oil recovery studies in naturally fractured reservoirs

    E-Print Network [OSTI]

    Fineout, James Mark

    1992-01-01T23:59:59.000Z

    , they developed both a single matrix block model and a dual matrix block model with variable fracture width. These tests related imbibition theory with regard to matrix block size, permeability and fluid viscosity affects on oil recovery. They also determined... in naturally fractured reservoirs have relied upon material balance calculations to determine saturation changes. Through the use of Computed Tomography scanning, we have developed a technique not only to determine saturation changes but also positional...

  13. Bistability and pulsations in cw semiconductor lasers with a controlled amount of saturable absorption

    SciTech Connect (OSTI)

    Harder, C.; Lau, K.Y.; Yariv, A.

    1981-09-01T23:59:59.000Z

    Experimental results of a buried heterostructure cw laser with a controllable amount of saturable absorption introduced by a segmented contact are presented. With no absorption the laser is stable and has a linear output characteristic. Increasing of the saturable absorption by changing the pump current through the control segment causes the light output of the device to pulsate and to show bistable and hysteretical behavior. The introduction of a controllable amount of saturable absorption suggest the usefulness of this device in generating extremely short pulses, for example, by passive mode locking and as a bistable optical device.

  14. Moving granular-bed filter development program topical report

    SciTech Connect (OSTI)

    Newby, R.A.; Dilmore, W.J.; Fellers, A.W.; Gasparovic, A.C.; Kittle, W.F.; Lippert, T.E.; Smeltzer, E.E.; Yang, W.C.

    1991-10-17T23:59:59.000Z

    The Westinghouse Science Technology Center has proposed a novel moving granular-bed filter concept, the Standleg Moving Granular-Bed Filter (S-MGBF) system, that overcomes the inherent deficiencies of the current state-of-the-art moving granular-bed filter technology. The S-MGBF system combines two unique features that make it highly effective for use in advanced coal-fueled power plants. First, the S-MGBF system applies pelletization technology to generate filter pellets from the power plant solid waste materials, and uses these pellets as a once-through'' filtering media to eliminate the need for costly, complex, and large filter media recycling equipment. This pelletizing step also generates a more environmentally acceptable solid waste product and provides the potential to incorporate gas-phase contaminant sorbents into the filtering media. Secondly, the S-MGBF system passes these pellets and the flyash laden power plant gas through a highly compact S-MGBF that uses cocurrent gas-pellet contacting in an arrangement that greatly simplifies and enhances the distribution of dirty gas to the moving bed and the disengagement of clean gas from the moving bed.

  15. Femtosecond all-optical parallel logic gates based on tunable saturable to reverse saturable absorption in graphene-oxide thin films

    SciTech Connect (OSTI)

    Roy, Sukhdev, E-mail: sukhdevroy@dei.ac.in; Yadav, Chandresh [Department of Physics and Computer Science, Dayalbagh Educational Institute, Dayalbagh, Agra 282 005 (India)] [Department of Physics and Computer Science, Dayalbagh Educational Institute, Dayalbagh, Agra 282 005 (India)

    2013-12-09T23:59:59.000Z

    A detailed theoretical analysis of ultrafast transition from saturable absorption (SA) to reverse saturable absorption (RSA) has been presented in graphene-oxide thin films with femtosecond laser pulses at 800?nm. Increase in pulse intensity leads to switching from SA to RSA with increased contrast due to two-photon absorption induced excited-state absorption. Theoretical results are in good agreement with reported experimental results. Interestingly, it is also shown that increase in concentration results in RSA to SA transition. The switching has been optimized to design parallel all-optical femtosecond NOT, AND, OR, XOR, and the universal NAND and NOR logic gates.

  16. Natural Predator

    E-Print Network [OSTI]

    Wythe, Kathy

    2006-01-01T23:59:59.000Z

    tx H2O | pg. 10 Natural Predator Story by Kathy Wythe Natural Predator Foreign beetle shows promise for controlling saltcedar In the northern part of the Texas Panhandle andalong the West Texas banks of the Colorado andPecos rivers, Texas... scientists are successfully intro- ducing a foreign beetle to help control an invasive and exotic water-thirsty plant. Saltcedar, or Tamarix, was introduced to the western United States in the 1800s from central Asia as an ornamental tree and planted...

  17. Spectroscopic Abundances and Membership in the Wolf 630 Moving Group

    E-Print Network [OSTI]

    Bubar, Eric J

    2010-01-01T23:59:59.000Z

    The concept of kinematic assemblages evolving from dispersed stellar clusters has remained contentious since Eggen's initial formulation of moving groups in the 1960's. With high quality parallaxes from the Hipparcos space astrometry mission, distance measurements for thousands of nearby, seemingly isolated stars are currently available. With these distances, a high resolution spectroscopic abundance analysis can be brought to bear on the alleged members of these moving groups. If a structure is a relic of an open cluster, the members can be expected to be monolithic in age and abundance inasmuch as homogeneity is observed in young open clusters. In this work we have examined 34 putative members of the proposed Wolf 630 moving group using high resolution stellar spectroscopy. The stars of the sample have been chemically tagged to determine abundance homogeneity and confirm the existence of a homogeneous subsample of 19 stars. Fitting the homogeneous subsample with Yale-Yonsei isochrones yields a single evolut...

  18. The effect of un-saturates on low-temperature oxidation of crude oil Sidqi A. Abu-Khamsin

    E-Print Network [OSTI]

    Abu-Khamsin, Sidqi

    The effect of un-saturates on low-temperature oxidation of crude oil Sidqi A. Abu-temperature oxidation (LTO) of four Arabian crudes as well as blends of naphtha with a super-light crude-saturates increased. The lightest crude with 51.1 API gravity and un-saturates fraction of 0.2 showed the least LTO

  19. Moving Toward a Peaceful Nuclear Future | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed offOCHCO2:Introduction toManagement of the NationalPennsylvania |FebruaryEnergy MovingMoving

  20. Minimal time problem for a fed-batch bioreactor with saturating singular control

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    Minimal time problem for a fed-batch bioreactor with saturating singular control Terence Bayen in the present work is a fed-batch bioreactor with one species and one substrate. Our aim is to find an optimal

  1. E-Print Network 3.0 - attributes saturated salt Sample Search...

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

    for: attributes saturated salt Page: << < 1 2 3 4 5 > >> 1 This thesis focuses on the restoration of salt marshes in north-west Europe. Salt marshes are important habitats that...

  2. High-Gain Harmonic Generation Free-Electron Laser at Saturation

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

    Gain Harmonic Generation Free-Electron Laser at Saturation T. Shaftan 1 , M. Babzien 1 , I. Ben-Zvi 1 , S. G. Biedron 2 , L. F. DiMauro 1 , A. Doyuran 1 , J.N. Galayda 2 , E....

  3. Effect of Initial Oil Saturation on In-Situ Combustion Performance of a Canadian Bitumen

    E-Print Network [OSTI]

    Aleksandrov, Denis

    2013-05-31T23:59:59.000Z

    generated from the chemical reactions between fuel formed during ISC and injected oxygen. Heat generation depends on the amount of fuel formed, which, in turn, is affected by initial oil saturation (IOS). Thus, in this study, ISC process dynamics were...

  4. Adaptive Internal Model Control for Mid-Ranging of Closed-Loop Systems with Internal Saturation

    E-Print Network [OSTI]

    saturations. The problem originates from previous work in machining with industrial robots, where an external and tested in milling scenarios [1], [2]. The setup consists of a conventional industrial robot

  5. Variations in coral reef net community calcification and aragonite saturation state on local and global scales

    E-Print Network [OSTI]

    Bernstein, Whitney Nicole

    2013-01-01T23:59:59.000Z

    Predicting the response of net community calcification (NCC) to ocean acidification OA and declining aragonite saturation state [Omega]a requires a thorough understanding of controls on NCC. The diurnal control of light ...

  6. Suppression of Mode-Beating in a Saturated Hole-Coupling FEL Oscillator

    E-Print Network [OSTI]

    Krishnagopal, S.

    2011-01-01T23:59:59.000Z

    cavity case L and with an FEL interaction. of mode-beatingMode profiles (with an FEL interaction) at three differentin a Saturated Hole-coupled FEL Oscillator S. Krishnagopal,

  7. Main flux saturation modelling in double-cage and deep-bar induction machines

    SciTech Connect (OSTI)

    Levi, E. [Liverpool John Moores Univ. (United Kingdom). School of Electrical Engineering] [Liverpool John Moores Univ. (United Kingdom). School of Electrical Engineering

    1996-06-01T23:59:59.000Z

    The available models of saturated double-cage and deep-bar induction machines are the current state-space model and the flux state-space model, where state-space variables are selected either as stator current and currents of both rotor cages, or stator flux linkage and flux linkages of both rotor cages. This paper presents a number of models of saturated double-cage (deep-bar) induction machines where alternative sets of state-space variables are selected. The method of main flux saturation modelling relies on recently introduced concept of generalized flux space vector, which has originally been developed for modelling of saturated single-cage induction machines. The procedure and the novel models are verified by experimental study and simulation of self-excitation process in a double-cage induction generator.

  8. Comparative analysis of remaining oil saturation in waterflood patterns based on analytical modeling and simulation

    E-Print Network [OSTI]

    Azimov, Anar Etibar

    2006-08-16T23:59:59.000Z

    In assessing the economic viability of a waterflood project, a key parameter is the remaining oil saturation (ROS) within each pattern unit. This information helps in identifying the areas with the highest ROS and thus ...

  9. Silicon-germanium saturable absorbers and erbium-doped waveguides for integrated mode-locked lasers

    E-Print Network [OSTI]

    Byun, Hyunil

    2006-01-01T23:59:59.000Z

    In this thesis, Silicon-Germanium (SiGe) Saturable Bragg Reflectors (SBR) and Erbium-doped waveguide chips are fabricated and characterized as crucial components for integration of a mode-locked laser on a Si-chip. The ...

  10. Development and application of saturable absorbers to femtosecond solid-state laser mode-locking

    E-Print Network [OSTI]

    Prasankumar, Rohit Prativadi, 1975-

    2003-01-01T23:59:59.000Z

    Semiconductor saturable absorbers have had a major impact on the field of ultrashort pulse generation by increasing the stability and reliability of ultrashort pulse lasers, making them more useful in many applications. ...

  11. Effects of fluid properties and initial gas saturation on oil recovery by water flooding

    E-Print Network [OSTI]

    Arnold, Marion Denson

    1959-01-01T23:59:59.000Z

    EFFECTS OF FLUID PROPERTIES AND INITIAL GAS SATURATION ON OIL RECOVERY BY WATER FLOODING A Thesis By MARION D. ARNOLD Submitted to the Graduate School of the Agricultural and Mechanical College of Texas in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE August, 1959 Major Subject: Petroleum Engineering EFFECTS OF FLUID PROPERTIES AND INITIAL GAS SATURATION ON OIL RECOVERY BY WATER FLOODING A Thesis By MARION D, ARNOLD Approved as to style and content by...

  12. Effects of fluid properties and initial gas saturation on oil recovery by water flooding

    E-Print Network [OSTI]

    Arnold, Marion Denson

    1959-01-01T23:59:59.000Z

    EFFECTS OF FLUID PROPERTIES AND INITIAL GAS SATURATION ON OIL RECOVERY BY WATER FLOODING A Thesis By MARION D. ARNOLD Submitted to the Graduate School of the Agricultural and Mechanical College of Texas in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE August, 1959 Major Subject: Petroleum Engineering EFFECTS OF FLUID PROPERTIES AND INITIAL GAS SATURATION ON OIL RECOVERY BY WATER FLOODING A Thesis By MARION D, ARNOLD Approved as to style and content by...

  13. High-energy scattering in the saturation regime including running coupling and rare fluctuation effects

    SciTech Connect (OSTI)

    Xiang Wenchang [Fakultaet fuer Physik, Universitaet Bielefeld, D-33501 Bielefeld (Germany)

    2009-01-01T23:59:59.000Z

    The analytic form of the asymptotic behavior of the S matrix in the saturation regime including the running coupling is obtained. To get this result, we solve the Balitsky and Kovchegov-Weigert evolution equations in the saturation regime, which include running coupling corrections. We study also the effect of rare fluctuations on top of the running coupling. We find that the rare fluctuations are less important in the running coupling case as compared to the fixed coupling case.

  14. High energy scattering in the saturation regime including running coupling and rare fluctuation effects

    E-Print Network [OSTI]

    Wenchang Xiang

    2008-09-16T23:59:59.000Z

    The analytic result for the $S$-matrix in the saturation regime including the running coupling is obtained. To get this result we solve the Balitsky and Kovchegov-Weigert evolution equations in the saturation regime, which include running coupling corrections. We study also the effect of rare fluctuations on top of the running coupling. We find that the rare fluctuations are less important in the running coupling case as compared to the fixed coupling case.

  15. Estimation of Saturation of Permanent-Magnet Synchronous Motors Through an Energy-Based Model

    E-Print Network [OSTI]

    Jebai, AlKassem; Martin, Philippe; Rouchon, Pierre

    2011-01-01T23:59:59.000Z

    We propose a parametric model of the saturated Permanent-Magnet Synchronous Motor (PMSM) together with an estimation method of the magnetic parameters. The model is based on an energy function which simply encompasses the saturation effects. Injection of fast-varying pulsating voltages and measurements of the resulting current ripples then permit to identify the magnetic parameters by linear least squares. Experimental results on a surface-mounted PMSM and an interoir magnet PMSM illustrate the relevance of the approach.

  16. Neutron probe measurements of air saturation near an air sparging well

    SciTech Connect (OSTI)

    Acomb, L.J. [Geosphere, Inc., Anchorage, AK (United States); McKay, D.; Currier, P. [Army Corps of Engineers, Hanover, NH (United States). Cold Regions Research Engineering Lab.; Berglund, S.T.; Sherhart, T.V.; Benediktsson, C.V. [Federal Aviation Administration, Anchorage, AK (United States). Airway Facilities Div.

    1995-12-31T23:59:59.000Z

    In situ air sparging is being used to remediate diesel-fuel-contaminated soils in the zone of water table fluctuation at a remote Alaskan Federal Aviation Administration (FAA) air navigation aid site. A neutron probe was used to measure changes in percent air saturation during air sparging in a uniform, aeolian sand. Air was injected about 15 ft below the water table at air flowrates of 4 to 16 ft{sup 3}/min (cfm). The neutron probe data show that during air sparging the distribution of injected air changed through time, initially expanding outward from the sparge well screen, then consolidating around the air sparging well, until a steady-state condition was reached. The maximum radius of influence, measured at an air flowrate of 16 cfm, was about 15 ft during steady-state flow. At all air flowrates the percent air saturation was highest near the air sparging well and decreased radially away from the sparging well. Near the sparging well, the percent air saturation ranged from about 30% to >50% at air injection rates of 4 to 16 cfm. Where the percent air saturation is similar to that in the vadose zone, volatilization and biodegradation may occur at rates similar to those in the vadose zone. Selected air saturation results are presented, and dissolved oxygen and saturated zone pressure data are summarized.

  17. MOVING CONTACT LINES IN THE CAHN-HILLIARD PIERRE SEPPECHER

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    of the flow in the immediate vicinity of the contact line shows the connection between the static contact, the shape of the interface of a drop lying on a smooth horizontal surface depends on gravity and surface, they are responsible for the rising of a fluid in a capillary tube. When the interface is moving with respect

  18. Helicobacter pylori moves through mucus by reducing mucin viscoelasticity

    E-Print Network [OSTI]

    Helicobacter pylori moves through mucus by reducing mucin viscoelasticity Jonathan P. Celli: 20 pages 6 figures 0 tables. #12;Abstract The ulcer-causing gastric pathogen Helicobacter pylori is wrong. #12;\\body Introduction Helicobacter pylori is a spiral shaped, Gram-negative microorganism

  19. Helicobacter pylori moves through mucus by reducing mucin viscoelasticity

    E-Print Network [OSTI]

    Helicobacter pylori moves through mucus by reducing mucin viscoelasticity Jonathan P. Cellia,1, 2009 (received for review March 27, 2009) The ulcer-causing gastric pathogen Helicobacter pylori environment. H. pylori bacterial motility rheology pH gelation Helicobacter pylori is a spiral shaped, Gram

  20. Westinghouse standleg moving granular bed filter development program

    SciTech Connect (OSTI)

    Newby, R.A.; Yang, W.C.; Smeltzer, E.E.; Lippert, T.E.

    1994-10-01T23:59:59.000Z

    Advanced, coal-based, power plants, such as IGCC and Advanced-PFBC, are currently nearing commercial demonstration. These power plant technologies require hot gas filtration as part of their gas cleaning trains. Ceramic barrier filters are the major filter candidates being developed for these hot gas cleaning applications. While ceramic barrier filters achieve high levels of particle removal, there are concerns for their reliability and operability. An alternative hot gas filtration technology is the moving granular bed filter. These systems are at a lower state of development than ceramic barrier filters, and their effectiveness as filters is still in question. Their apparent attributes, result from their much less severe mechanical design and materials constraints, and the potential for more reliable, failure-free particle removal operation. The standleg moving granular-bed filter (SMGBF) system, is a compact unit that uses cocurrent gas-pellet contacting in an arrangement that greatly simplifies and enhances the distribution of dirty, process gas to the moving bed and allows effective disengagement of clean gas from the moving bed. This paper describes the equipment and process test results.

  1. Position Estimation With Moving Beacons in Wireless Sensor Networks

    E-Print Network [OSTI]

    Dong, Liang

    Position Estimation With Moving Beacons in Wireless Sensor Networks Liang Dong and Frank L nodes in a wireless sensor network. Without GPS capability on any of the sensors, the position issue in wireless sensor networks. Accurate positions of sensor nodes improve the routing efficiency

  2. Moving Object Detection and Compression in IR Sequences

    E-Print Network [OSTI]

    Agrawal, Amit

    infrared (IR) sensors. The aim is to use IR image sequences to detect moving objects (humans or vehicles computational power of computing devices attached to the sensor, the algorithms should be computationally simple implemented in C/C++ and their performance has been evaluated the using Hitachi's SH4 platform with software

  3. Two Case Studies on Vision-based Moving Objects Measurement

    E-Print Network [OSTI]

    Zhang, Ji

    2012-10-19T23:59:59.000Z

    In this thesis, we presented two case studies on vision-based moving objects measurement. In the first case, we used a monocular camera to perform ego-motion estimation for a robot in an urban area. We developed the algorithm based on vertical line...

  4. ANALYSIS OF SOME MOVING SPACETIME FINITE ELEMENT METHODS \\Lambda

    E-Print Network [OSTI]

    Bank, Randolph E.

    ANALYSIS OF SOME MOVING SPACETIME FINITE ELEMENT METHODS \\Lambda RANDOLPH E. BANK y AND RAFAEL F. SANTOS z Abstract. Two spacetime finite element methods for solving timedependent partial differential equations are defined and analyzed. The methods are based on the use of isoparametric finite elements

  5. MOVE-IN GUIDE Housing and Residential Life

    E-Print Network [OSTI]

    Finley Jr., Russell L.

    MOVE-IN GUIDE Fall 2013 Housing and Residential Life #12;Become a leader, excel academically and give you memories that will last well after college. The Housing and Residential Life staff knows and guidelines for how our residential communities operate and come together throughout the academic year. Please

  6. Motion Prediction for Moving Objects: a Statistical Approach

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    Motion Prediction for Moving Objects: a Statistical Approach Dizan Vasquez & Thierry Fraichard with those objects requires the ability to predict their future motion (e.g. for predator evasion, prey hunting, collision avoidance, etc.). Motion prediction is a research area with applications in many

  7. Moving Pictures: Looking Out / Looking In Cati Vaucelle 1

    E-Print Network [OSTI]

    Ishii, Hiroshi

    , Digital Media, Mobile Technology, Video Jockey, Storyboard, Constructionism, Perspective Taking-personal production of digital media, as well as being a scaffolding technology for cultural exchange. We seeMoving Pictures: Looking Out / Looking In Cati Vaucelle 1 MIT Media Lab Media Fabrics & Crite

  8. Moving Weakly Relativistic Electromagnetic Solitons in Laser-Plasmas

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    .O. Box 224, 18001 Nis, Serbia and Montenegro 2 Vinca Institute of Nuclear Sciences, P.O.Box 522, 11001 Belgrade, Serbia and Montenegro Abstract. A case of moving one-dimensional electromagnetic (EM) solitons pulses, up to 40% of the laser energy can be trapped by relativistic solitons, creating a significant

  9. The moving blocks bootstrap versus parametric time series Richard M. Vogel

    E-Print Network [OSTI]

    Vogel, Richard M.

    The moving blocks bootstrap versus parametric time series models Richard M. Vogel Department adding uncertainty to the analysis. The moving blocks bootstrap is a simple resampling algorithm which of the moving block length. The moving blocks bootstrap resamples the observed time series using approximately

  10. Radiation Reaction on Moving Particles in General Relativity

    E-Print Network [OSTI]

    Eirini Messaritaki

    2003-08-14T23:59:59.000Z

    A particle in the vicinity of a Schwarzschild black hole is known to trace a geodesic of the Schwarzschild background, to a first approximation. If the interaction of the particle with its own field (scalar, electromagnetic or gravitational) is taken into account, the path is no longer a background geodesic and the self-force that the particle experiences needs to be taken into consideration. In this dissertation, a recently proposed method for the calculation of the self-force is implemented. According to this method the self-force comes from the interaction of the particle with the Regular-Remainder scalar field, electromagnetic potential or metric perturbation. That Regular-Remainder is obtained by subtracting the Singular part (which exerts no force) from the retarded scalar field, electromagnetic potential of metric perturbation generated by the moving particle. First, the Singular scalar fields, electromagnetic potentials and metric perturbations are calculated for different sources moving in a Schwarzschild background. For that, the Thorne-Hartle-Zhang coordinates in the vicinity of the moving source are used. Then a mode-sum regularization method initially proposed for the direct scalar field is followed, and the regularization parameters for the singular part of the scalar field and for the first radial derivative of the singular part of the self-force are calculated. Also, the numerical calculation of the retarded scalar field for a particle moving on a circular geodesic in a Schwarzschild spacetime is presented. Finally, the self-force for a scalar particle moving on a circular Schwarzschild orbit is calculated and some results about the effects of the self-force on the orbital frequency of the circular orbit are presented.

  11. Moving Canadian Oil to Markets: The Economic Dimensions

    E-Print Network [OSTI]

    Calgary, University of

    Handbook 0 10000 20000 30000 40000 50000 60000 Crude Oil and Condensate Oil Sands Natural Gas NGLs Sulphur Natural Gas Conventional Crude Oil Coal Bitumen Billionof2002$ PV of energy natural resouces in 2011 of the economy and prosperity But this requires additional transportation infrastructure to access higher value

  12. LOCALISATION OF A REACTIVE TRANSPORT ZONE IN A SATU-RATED KARSTIC CONDUIT DEDUICED FROM NATURAL AND ARTI-

    E-Print Network [OSTI]

    Boyer, Edmond

    : For groundwater resources managers, flow modeling is a useful tool to investigate sustainable scenarios of water the diameter of the conduit zone by an estimated 40 cm in 100 years. INTRODUCTION For groundwater resource managers, groundwater flow modeling is an essential tool for investigating proposed sustainable scenarios

  13. Coherent radiation from neutral molecules moving above a grating

    E-Print Network [OSTI]

    Alexey Belyanin; Federico Capasso; Vitaly Kocharovsky; Vladimir Kocharovsky

    2001-10-10T23:59:59.000Z

    We predict and study the quantum-electrodynamical effect of parametric self-induced excitation of a molecule moving above the dielectric or conducting medium with periodic grating. In this case the radiation reaction force modulates the molecular transition frequency which results in a parametric instability of dipole oscillations even from the level of quantum or thermal fluctuations. The present mechanism of instability of electrically neutral molecules is different from that of the well-known Smith-Purcell and transition radiation in which a moving charge and its oscillating image create an oscillating dipole. We show that parametrically excited molecular bunches can produce an easily detectable coherent radiation flux of up to a microwatt.

  14. Quantum radiation from a partially reflecting moving mirror

    E-Print Network [OSTI]

    Nistor Nicolaevici

    2000-03-29T23:59:59.000Z

    We consider the quantum radiation from a partially reflecting moving mirror for the massless scalar field in 1+1 Minkowski space. Partial reflectivity is achieved by localizing a delta-type potential at the mirror's position. The radiated flux is exactly obtained for arbitrary motions as an integral functional of the mirror's past trajectory. Partial reflectivity corrections to the perfect mirror result are discussed.

  15. Chemistry of dense clumps near moving Herbig-Haro objects

    E-Print Network [OSTI]

    Christie, Helen; Williams, David; Girart, Josep-Miquel; Morata, Oscar; 10.1111/j.1365-2966.2011.19032.x

    2011-01-01T23:59:59.000Z

    Localised regions of enhanced emission from HCO+, NH3 and other species near Herbig-Haro objects (HHOs) have been interpreted as arising in a photochemistry stimulated by the HHO radiation on high density quiescent clumps in molecular clouds. Static models of this process have been successful in accounting for the variety of molecular species arising ahead of the jet; however recent observations show that the enhanced molecular emission is widespread along the jet as well as ahead. Hence, a realistic model must take into account the movement of the radiation field past the clump. It was previously unclear as to whether the short interaction time between the clump and the HHO in a moving source model would allow molecules such as HCO+ to reach high enough levels, and to survive for long enough to be observed. In this work we model a moving radiation source that approaches and passes a clump. The chemical picture is qualitatively unchanged by the addition of the moving source, strengthening the idea that enhanc...

  16. Moving granular-bed filter development program. Topical report

    SciTech Connect (OSTI)

    Newby, R.A.; Yang, W.C.; Smeltzer, E.E.; Lippert, T.E.

    1994-04-01T23:59:59.000Z

    Advanced, coal-based, power plants, such as IGCC and Advanced-PFBC, are currently nearing commercial demonstration. These power plant technologies require hot gas filtration as part of their gas cleaning trains. Ceramic barrier filters are the major filter candidates being developed for these hot gas cleaning applications. While ceramic barrier filters achieve high levels of particle removal, concerns exist for their reliability and operability in these applications. An alternative hot gas filtration technology is the moving granular bed filter. An advanced, moving granular bed filter has been conceived, and early development activities performed by the Westinghouse Electric Corporation, Science and Technology Center. This document reports on the Base Contract tasks performed to resolve the barrier technical issues for this technology. The concept, the Standleg Moving Granular Bed Filter (SMGBF) has a concurrent downward, gas and bed media flow configuration that results in simplified features and improved scaleup feasibility compared to alternative designs. Two modes of bed media operation were assessed in the program: once-through using pelletized power plant waste as bed media, and recycle of bed media via standleg and pneumatic transport techniques. Cold Model testing; high-temperature, high-pressure testing; and pelletization testing using advanced power plant wastes, have been conducted in the program. A commercial, economic assessment of the SMGBF technology was performed for IGCC and Advanced-PFBC applications. The evaluation shows that the barrier technical issues can be resolved, and that the technology is potentially competitive with ceramic barrier filters.

  17. Stator-flux-based vector control of induction machines in magnetic saturation

    SciTech Connect (OSTI)

    Hofmann, H.; Sanders, S.R.; Sullivan, C. [Univ. of California, Berkeley, CA (United States). Dept. of Electrical Engineering and Computer Sciences

    1995-12-31T23:59:59.000Z

    In many variable-torque applications of induction machines it is desirable to operate the machine in magnetic saturation, thus allowing the machine to produce higher torques. Stator-flux-based control schemes have been developed as a possible alternative method of control of induction machines. Stator-flux-based control schemes need not depend on the magnetic characteristics of the machine, and hence are potentially more robust and easier to implement in magnetic saturation than rotor-flux-based control. The authors analyze the induction machine in saturation using a nonlinear {pi}-model of the machine`s magnetics, and develop a control scheme in the stator flux reference frame that is independent of magnetics. Experiments carried out on a 3 hp, 1,800 rpm wound rotor induction machine show smooth operation of the control scheme at torque levels up to at least 4 times rated torque.

  18. Physico-chemical and Bio-chemical Controls on Soil C Saturation Behavior

    SciTech Connect (OSTI)

    Six, Johan; Plante, Alain

    2011-06-02T23:59:59.000Z

    In this project, we tested through a multitude of lab and field experiments the concept of soil C stabilization and determined metrics for the level of C saturation across soils and soil organic matter fractions. The basic premise of the soil C saturation concept is that there is a maximum amount of C that can be stabilized within a soil, even when C input is further increased. In a first analysis, our results showed that linear regression models do not adequately predict maximal organic C stabilization by fine soil particles. Soil physical and chemical properties associated with soil clay mineralogy, such as specific surface area and organic C loading, should be incorporated into models for predicting maximal organic C stabilization. In a second analysis, we found significantly greater maximal C stabilization in the microaggregate-protected versus the non-microaggregate protected mineral fractions, which provides independent validation that microaggregation plays an important role in increasing the protection and stabilization of soil C leading to greater total soil C accumulation in these pools. In a third study, our results question the role of biochemical preference in mineral C stabilization and of the chemical recalcitrance of specific plant-derived compounds in non-protected soil C accumulation. Because C biochemical composition of slowly turning over mineral protected C pools does not change with C saturation, input C composition is unlikely to affect long-term C stabilization. Rather, C saturation and stabilization in soil is controlled only by the quantity of C input to the soil and the physical and chemical protection mechanisms at play in long-term C stabilization. In conclusion, we have further corroborated the concept of soil C saturation and elucidated several mechanisms underlying this soil C saturation.

  19. Comparison of average and point capillary pressure-saturation functions determined by steady-state centrifugation

    SciTech Connect (OSTI)

    Cropper, Clark [University of Tennessee, Knoxville (UTK); Perfect, Edmund [ORNL; van den Berg, Dr. Elmer [University of Tennessee, Knoxville (UTK); Mayes, Melanie [ORNL

    2010-01-01T23:59:59.000Z

    The capillary pressure-saturation function can be determined from centrifuge drainage experiments. In soil physics, the data resulting from such experiments are usually analyzed by the 'averaging method.' In this approach, average relative saturation, , is expressed as a function of average capillary pressure, <{psi}>, i.e., (<{psi}>). In contrast, the capillary pressure-saturation function at a physical point, i.e., S({psi}), has been extracted from similar experiments in petrophysics using the 'integral method.' The purpose of this study was to introduce the integral method applied to centrifuge experiments to a soil physics audience and to compare S({psi}) and (<{psi}>) functions, as parameterized by the Brooks-Corey and van Genuchten equations, for 18 samples drawn from a range of porous media (i.e., Berea sandstone, glass beads, and Hanford sediments). Steady-state centrifuge experiments were performed on preconsolidated samples with a URC-628 Ultra-Rock Core centrifuge. The angular velocity and outflow data sets were then analyzed using both the averaging and integral methods. The results show that the averaging method smoothes out the drainage process, yielding less steep capillary pressure-saturation functions relative to the corresponding point-based curves. Maximum deviations in saturation between the two methods ranged from 0.08 to 0.28 and generally occurred at low suctions. These discrepancies can lead to inaccurate predictions of other hydraulic properties such as the relative permeability function. Therefore, we strongly recommend use of the integral method instead of the averaging method when determining the capillary pressure-saturation function by steady-state centrifugation. This method can be successfully implemented using either the van Genuchten or Brooks-Corey functions, although the latter provides a more physically precise description of air entry at a physical point.

  20. Saturable nonlinear dielectric waveguide with applications to broad-area semiconductor lasers

    SciTech Connect (OSTI)

    Mehuys, D.; Mittelstein, M.; Salzman, J.; Yariv, A.

    1987-11-01T23:59:59.000Z

    Self-focusing in a passive dielectric waveguide with a saturable nonlinearity is studied. The eigensolutions constitute a good approximation to the lateral modes of broad-area semiconductor lasers under low-duty-cycle pulsed conditions. The laser modes are predicted to consist of adjacent filaments coupled in phase, leading to a single-lobed far field, and to be stable with increased current injection above saturation intensity. The ultimate filament spacing is inversely proportional to the threshold gain, and thus wider filaments are expected in low-threshold broad-area lasers.

  1. A study of capillary pressure in a partly saturated feldspar powder

    E-Print Network [OSTI]

    Turner, Dennis Marshall

    1965-01-01T23:59:59.000Z

    solution from a squirt bottle and rinsing in like manner. An alternate procedure for saturating the housing is to first fill the housing with deaired water and then thread it on the Circle Seal valve from which water is constantly flowing. However... Diagram of Deairing Apparatus 35 36 39 40 Figure 5-10 Carhoy Filled with Water and Inflated Balloon. Page 41 7-1 Capillary Pressure versus Time for Different Degrees of Saturation 56 7-2 Time Lag in Capillary Pressure with an Increase...

  2. Positive and negative chirping of laser pulses shorter than 100 fsec in a saturable absorber

    SciTech Connect (OSTI)

    Miranda, R.S.; Jacobovitz, G.R.; Brito Cruz, C.H.; Scarparo, M.A.F.

    1986-04-01T23:59:59.000Z

    We present a calculation of the chirp generated in laser pulses shorter than 100 fsec on propagation through a saturable absorber (DODCI in ethylene glycol). The calculation takes into account the absorber saturation and the solvent nonlinear refractive index. At pulse energies greater than 10 nJ the chirp tends to be predominantly positive, and it increases rapidly as the pulse duration becomes shorter than 50 fsec. At pulse energies in the 1--7-nJ range the chirp is mostly negative for pulses longer than 30 fsec.

  3. MOBILIZATION AND CHARACTERIZATION OF COLLOIDS GENERATED FROM CEMENT LEACHATES MOVING THROUGH A SRS SANDY SEDIMENT

    SciTech Connect (OSTI)

    Li, D.; Roberts, K.; Kaplan, D.; Seaman, J.

    2011-09-20T23:59:59.000Z

    Naturally occurring mobile colloids are ubiquitous and are involved in many important processes in the subsurface zone. For example, colloid generation and subsequent mobilization represent a possible mechanism for the transport of contaminants including radionuclides in the subsurface environments. For colloid-facilitated transport to be significant, three criteria must be met: (1) colloids must be generated; (2) contaminants must associate with the colloids preferentially to the immobile solid phase (aquifer); and (3) colloids must be transported through the groundwater or in subsurface environments - once these colloids start moving they become 'mobile colloids'. Although some experimental investigations of particle release in natural porous media have been conducted, the detailed mechanisms of release and re-deposition of colloidal particles within natural porous media are poorly understood. Even though this vector of transport is known, the extent of its importance is not known yet. Colloid-facilitated transport of trace radionuclides has been observed in the field, thus demonstrating a possible radiological risk associated with the colloids. The objective of this study was to determine if cementitious leachate would promote the in situ mobilization of natural colloidal particles from a SRS sandy sediment. The intent was to determine whether cementitious surface or subsurface structure would create plumes that could produce conditions conducive to sediment dispersion and mobile colloid generation. Column studies were conducted and the cation chemistries of influents and effluents were analyzed by ICP-OES, while the mobilized colloids were characterized using XRD, SEM, EDX, PSD and Zeta potential. The mobilization mechanisms of colloids in a SRS sandy sediment by cement leachates were studied.

  4. Visually-Guided Robot Navigation: From Artificial To Natural Landmarks

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Visually-Guided Robot Navigation: From Artificial To Natural Landmarks Enric Celaya, Jose-Luis Albarral, Pablo Jim´enez, and Carme Torras Institut de Rob`otica i Inform`atica Industrial (CSIC seems to be the fast detection of reliable visual references in the image stream as the robot moves

  5. Land Use and natUraL resoUrces

    E-Print Network [OSTI]

    California at Davis, University of

    in other areas. Students in our Green Building and Sustainable Design and Renewable Energy certificate1 Land Use and natUraL resoUrces Fall 2013 Including: Mitigation and Conservation Banking Climate making changes in our lives. We move to another city, change jobs or change our diet to be healthier. UC

  6. Predicting flow reversals in chaotic natural convection using data assimilation

    E-Print Network [OSTI]

    Danforth, Chris

    . The thermosyphon, a type of natural convection loop or non-mechanical heat pump, can be likened to a toy model of climate. Thermosyphons are used in solar water heaters (Belessiotis and Mathiou- lakis, 2002), cooling) and other industrial applications. In these heat pumps, buoyant forces move fluid through a closed loop

  7. NATURAL GAS MARKET ASSESSMENT

    E-Print Network [OSTI]

    CALIFORNIA ENERGY COMMISSION NATURAL GAS MARKET ASSESSMENT PRELIMINARY RESULTS In Support.................................................................................... 6 Chapter 2: Natural Gas Demand.................................................................................................. 10 Chapter 3: Natural Gas Supply

  8. A Moving Frame Algorithm for High Mach Number Hydrodynamics

    E-Print Network [OSTI]

    Hy Trac; Ue-Li Pen

    2003-09-24T23:59:59.000Z

    We present a new approach to Eulerian computational fluid dynamics that is designed to work at high Mach numbers encountered in astrophysical hydrodynamic simulations. The Eulerian fluid conservation equations are solved in an adaptive frame moving with the fluid where Mach numbers are minimized. The moving frame approach uses a velocity decomposition technique to define local kinetic variables while storing the bulk kinetic components in a smoothed background velocity field that is associated with the grid velocity. Gravitationally induced accelerations are added to the grid, thereby minimizing the spurious heating problem encountered in cold gas flows. Separately tracking local and bulk flow components allows thermodynamic variables to be accurately calculated in both subsonic and supersonic regions. A main feature of the algorithm, that is not possible in previous Eulerian implementations, is the ability to resolve shocks and prevent spurious heating where both the preshock and postshock Mach numbers are high. The hybrid algorithm combines the high resolution shock capturing ability of the second-order accurate Eulerian TVD scheme with a low-diffusion Lagrangian advection scheme. We have implemented a cosmological code where the hydrodynamic evolution of the baryons is captured using the moving frame algorithm while the gravitational evolution of the collisionless dark matter is tracked using a particle-mesh N-body algorithm. The MACH code is highly suited for simulating the evolution of the IGM where accurate thermodynamic evolution is needed for studies of the Lyman alpha forest, the Sunyaev-Zeldovich effect, and the X-ray background. Hydrodynamic and cosmological tests are described and results presented. The current code is fast, memory-friendly, and parallelized for shared-memory machines.

  9. Optimal and Robust Saturated Control for a Clock Generator C. Albea S. Lesecq and D. Puschini

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ,i] [7]. If the clock is generated for the whole circuit, and distributed in each VFI, the maximumOptimal and Robust Saturated Control for a Clock Generator C. Albea S. Lesecq and D. Puschini control engines in each volt- age/frequency island must be taken into account to optimize the circuit

  10. The Effect of Slip Velocity on Saturation for Multiphase Condensing Mixtures in a PEM Fuel Cell

    E-Print Network [OSTI]

    Stockie, John

    The Effect of Slip Velocity on Saturation for Multiphase Condensing Mixtures in a PEM Fuel Cell in computed results reported in the fuel cell literature, but which has not yet received a satisfactory to treat the slip velocity between phases. Keywords: Condensation Two Phase Flow PEM Fuel Cell Slip

  11. Importance of exogenous saturated fatty acids during brain development and myelination in mice

    E-Print Network [OSTI]

    Boyer, Edmond

    part of the cell, in mitochondria and in microsomes (Bourre et al., 1977a). Radioactive saturated fatty. The labelled stearic acid taken up was partly metabolized in the brain either by elongation or by degradation and in situ resynthesis of fatty acids. The activity of oleic acid and mono-unsaturated chains was detectable

  12. Acoustic properties of air-saturated porous materials containing dead-end porosity , P. Leclaire2

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    cooled down, the sample is cut and plunged in water to dissolve the sodium chloride. Then the sample while that of the sodium chloride (NaCl) is 801°C. Melted aluminum can therefore fill the interstitial propagation in rigid-frame open-cell porous media saturated by air.2 The model used in the exposed work

  13. 6.6 Solute Transport During Variably Saturated Flow--Inverse Methods

    E-Print Network [OSTI]

    Flury, Markus

    6.6 Solute Transport During Variably Saturated Flow-- Inverse Methods JI?Í SIMæNEK AND MARTINUS TH.6.2). In separate lines of research, solute transport parameters are often obtained from column experiments assuming curves. Obtaining solute transport pa- rameters for conditions for which no analytical solutions exist

  14. The exact probability distribution of saturating states in random sequential adsorption

    E-Print Network [OSTI]

    Masatomo Iwasa; Kyohei Fukuda

    2008-12-03T23:59:59.000Z

    We consider the non-overlapping irreversible random sequential adsorption (RSA) process on one-dimensional finite line, which is known also as the car parking process. The probability of each coverage in saturating states is analytically and exactly obtained. In the derivation, a new representation of states in RSA process is introduced, which effectively works to make the calculation clear and simple.

  15. Journal of Hydrology 161 (1994)91-108 Variably saturated modeling of transient drainage: sensitivity

    E-Print Network [OSTI]

    Clement, Prabhakar

    Journal of Hydrology ELSEVIER [1] Journal of Hydrology 161 (1994)91-108 Variably saturated modeling-1694(94)02509-A #12;92 W.R. Wise et al. / Journal of Hydrology 161 (1994) 91-108 transient unconfined flow through

  16. PARAMETRIC STUDY ON THE WATER CONTENT PROFILES AND OXIDATION RATES IN NEARLY SATURATED TAILINGS ABOVE THE

    E-Print Network [OSTI]

    Aubertin, Michel

    ), the degree of saturation Sr varies between 90 to 99 % at the tailings surface, covered by a sand protection gas migration control. This physical process is used for instance in the case of covers with capillary is a promising concept that uses the tailings capillary properties to inhibit O2 diffusion and control AMD

  17. Fluid substitution in rocks saturated with viscoelastic fluids Dina Makarynska1

    E-Print Network [OSTI]

    , Jyoti Behura3 , and Mike Batzle4 ABSTRACT Heavy oils have high densities and extremely high viscosities sands.We model the viscoelastic properties of a heavy- oil-saturated rock sample using CPA and a measured frequency- dependent complex shear modulus of the heavy oil. Comparison of modeled results

  18. Effect of GOR, Temperature, and Initial Water Saturation on Solution-Gas Drive in

    E-Print Network [OSTI]

    Firoozabadi, Abbas

    Effect of GOR, Temperature, and Initial Water Saturation on Solution-Gas Drive in Heavy-Oil have carried out an extensive set of tests on solution-gas drive for a heavy oil to study the effects was approximately 16% and higher. Introduction Solution-gas drive from some heavy oil reservoirs in Canada, Ven

  19. Annual Logging Symposium, June 16-20, 2012 SATURATION-HEIGHT AND INVASION CONSISTENT HYDRAULIC

    E-Print Network [OSTI]

    Torres-Verdn, Carlos

    clastic and carbonate reservoirs in multi-well contexts. It overcomes the limitation of the bulk volume on pore geometry, which relates to saturation-height modeling at a later stage in reservoir characterization. Additionally, pore geometry affects mud-filtrate invasion under over-balanced drilling conditions

  20. PHYSICAL REVIEW A 83, 012517 (2011) Tunable polarity of the Casimir force based on saturated ferrites

    E-Print Network [OSTI]

    ferrites Ran Zeng1 and Yaping Yang2,3 1 School of Telecommunication, Hangzhou Dianzi University, Hangzhou the saturated ferrite materials under the influence of an external magnetic field are taken into consideration. Between the ordinary dielectric slab and the ferrite slab, repulsive Casimir force may be observed

  1. Local entropy generation for saturated two-phase flow Remi Revellin a,*, Stephane Lips a

    E-Print Network [OSTI]

    Khandekar, Sameer

    the porous medium approach based on extended Darcy equation for fluid flow, and two-equation model for heat Keywords: Entropy generation Two-phase flow Saturated flow boiling Clapeyron equation a b s t r a c] has proposed equations for enhanced heat transfer surfaces to include the effect of fluid temperature

  2. Analysis of a Darcy flow model with a dynamic pressure saturation relation \\Lambda

    E-Print Network [OSTI]

    Hulshof, Joost

    equations modelling the flow. In the standard approach for two phase flows, such as oilwater or airwater mixtures, one combines the mass conservation equations and Darcy's law for the separate phasesAnalysis of a Darcy flow model with a dynamic pressure saturation relation \\Lambda Josephus Hulshof

  3. Application of the Convolution Theorem for the Modeling of Saturated Induction Motors

    E-Print Network [OSTI]

    Boyer, Edmond

    of the convolution concept in such a task reduces strongly the calculation process. Moreover, this method proves the spatial dependency of saturation. As the air-gap flux and stator voltages contain the predominant third stator voltage and air-gap voltage for use in determining the fundamental of air-gap flux-linkage. Still

  4. Amplification and saturation of the thermoacoustic instability in a standing-wave prime mover

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    Amplification and saturation of the thermoacoustic instability in a standing-wave prime mover M. Gu, a thermoacoustic standing-wave device is studied, which consists of a quarter-wavelength straight resonator such as the thermoacoustic heat flow inside the stack and the Rayleigh's streaming in the resonator are introduced

  5. Sequential Thermo-Hydraulic Modeling of Variably Saturated Flow in High-Level Radioactive Waste Repository

    E-Print Network [OSTI]

    Boyer, Edmond

    Sequential Thermo-Hydraulic Modeling of Variably Saturated Flow in High-Level Radioactive Waste-Malabry, France Key words: waste repository, geological disposal, thermo- hydraulic modeling Introduction The most long-lived radioactive wastes must be managed in a safe way for human health and for the environment

  6. Heat and mass transport in non-isothermal partially saturated oil-wax Antonio Fasano1

    E-Print Network [OSTI]

    Primicerio, Mario

    Heat and mass transport in non-isothermal partially saturated oil-wax solutions Antonio Fasano1 of deposition on a cold wall. Here we want to investigate the specific problem of diffusion-driven migration of desaturation. Our approach will be mainly focussed on the mass transport process, in the sense that the (rather

  7. PHYSICAL REVIEW A 83, 043827 (2011) Quantum fluctuations and saturable absorption in mesoscale lasers

    E-Print Network [OSTI]

    Levi, Anthony F. J.

    2011-01-01T23:59:59.000Z

    PHYSICAL REVIEW A 83, 043827 (2011) Quantum fluctuations and saturable absorption in mesoscale in mesoscale lasers. The time evolution of the density matrix is obtained from numerical integration and field behavior of mesoscale lasers. Using only semiclassical master equations and specific device parameters

  8. Development of source functions for modeling dissolution of residual DNAPL fingers in the saturated zone

    E-Print Network [OSTI]

    Johnson, Brian Scott

    1993-01-01T23:59:59.000Z

    fmger in the saturated zone. Modeling dissolution from a residual fmger can be approached in one of two ways: as an equilibrium process or as a rate dependent kinetic process. Development of a source term for modeling the dissolution from remediation...

  9. Off-fault plasticity and earthquake rupture dynamics: 2. Effects of fluid saturation

    E-Print Network [OSTI]

    Off-fault plasticity and earthquake rupture dynamics: 2. Effects of fluid saturation Robert C slip-weakening behavior is specified, and the off-fault material is described using an elastic-plastic poroelastoplastic materials with and without plastic dilation. During nondilatant undrained response near

  10. SATURATED FUSION SYSTEMS OVER 2-GROUPS BOB OLIVER AND JOANA VENTURA

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    SATURATED FUSION SYSTEMS OVER 2-GROUPS BOB OLIVER AND JOANA VENTURA Abstract. We develop methods-groups, fusion, simple groups. B. Oliver is partially supported by UMR 7539 of the CNRS. J. Ventura;2 BOB OLIVER AND JOANA VENTURA refer to Definition 2.3, Proposition 2.5, and Corollary 2.6 for more

  11. SATURATED FUSION SYSTEMS OVER 2-GROUPS BOB OLIVER AND JOANA VENTURA

    E-Print Network [OSTI]

    Ventura, Joana

    SATURATED FUSION SYSTEMS OVER 2-GROUPS BOB OLIVER AND JOANA VENTURA Abstract. We develop methods-groups, fusion, simple groups. B. Oliver is partially supported by UMR 7539 of the CNRS. J. Ventura is partially supported by FCT/POCTI/FEDER and grant PDCT/MAT/58497/2004. 1 #12;2 BOB OLIVER AND JOANA VENTURA

  12. Estimating Water Saturation at The Geysers Based on Historical Pressure and Temperature Production

    E-Print Network [OSTI]

    Stanford University

    Production Data Jericho L.P. Reyes June 2003 Financial support was provided through the Stanford Geothermal Program under California Energy Commission PIER grant PIR-00-004, and by the Department of Petroleum................................................................................................................. 1 2. Estimation of In-situ Saturation using Production Data

  13. Quantifying Desorption of Saturated Hydrocarbons from Silicon with Quantum Calculations and Scanning Tunneling Microscopy

    E-Print Network [OSTI]

    Seideman, Tamar

    Quantifying Desorption of Saturated Hydrocarbons from Silicon with Quantum Calculations hydrocarbon on silicon, desorption is observed at bias magnitudes as low as 2.5 V, albeit the desorption with conventional silicon microelectronic tech- nology [1722]. A detailed understanding of both the electronic

  14. What to Expect When Readying to Move Spent Nuclear Fuel from...

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

    What to Expect When Readying to Move Spent Nuclear Fuel from Commercial Nuclear Power Plants What to Expect When Readying to Move Spent Nuclear Fuel from Commercial Nuclear Power...

  15. Biofuels: Helping to Move the Industry to the Next Level | Department...

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

    Biofuels: Helping to Move the Industry to the Next Level Biofuels: Helping to Move the Industry to the Next Level November 16, 2010 - 6:25pm Addthis Jonathan Silver Jonathan Silver...

  16. The confined hydrogen atom with a moving nucleus

    E-Print Network [OSTI]

    Francisco M. Fernandez

    2010-01-21T23:59:59.000Z

    We study the hydrogen atom confined to a spherical box with impenetrable walls but, unlike earlier pedagogical articles on the subject, we assume that the nucleus also moves. We obtain the ground-state energy approximately by means of first--order perturbation theory and by a more accurate variational approach. We show that it is greater than the one for the case in which the nucleus is clamped at the center of the box. Present approach resembles the well-known treatment of the helium atom with clamped nucleus.

  17. Analysis of moving mesh partial differential equations with spatial smoothing

    E-Print Network [OSTI]

    Huang, Weizhang; Russell, Robert D.

    1997-06-01T23:59:59.000Z

    ANALYSIS OF MOVING MESH PARTIAL DIFFERENTIAL EQUATIONS WITH SPATIAL SMOOTHING#3; WEIZHANG HUANGy AND ROBERT D. RUSSELLz SIAM J. NUMER. ANAL. c 1997 Society for Industrial and Applied Mathematics Vol. 34, No. 3, pp. 1106{1126, June 1997 013 Abstract.... report NM-N8902, CWI, Amsterdam, 1989. [CD85] G. F. CAREY AND H. T. DINH, Grading functions and mesh redistribution, SIAM J. Numer. Anal., 22 (1985), pp. 1028{1040. [DD87] E. A. DORFI AND L. OC. DRURY, Simple adaptive grids for 1-D initial value problems...

  18. Moving Forward to Address Nuclear Waste Storage and Disposal | Department

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122Commercial602 1,39732onMake Your NextHow EMMinutes: EMMissionofof Energy Moving

  19. Help:Moving a page | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof Energy 2,AUDIT REPORTEnergyFarms AHefei Sungrow Powersource History View NewMoving

  20. Moving Multifamily Buildings From Assessments to Upgrades | Department of

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed offOCHCO2:Introduction toManagement of the NationalPennsylvania |FebruaryEnergy Moving

  1. Moving Quarks Help Solve Proton Spin Puzzle | Jefferson Lab

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

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

  2. States Move Forward on PEV Policy | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the.pdfBreakingMayDepartment of Staffing Model5ThomasEnergy ofCell Researchon theStates Move

  3. Moving toward a commercial market for hydrogen fuel cell vehicles

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport(FactDepartment3311,OfficialProductsUptake andUser ManualToward a PeacefulMOVING

  4. Predicting flow through low-permeability, partially saturated, fractured rock: A review of modeling and experimental efforts at Yucca Mountain

    SciTech Connect (OSTI)

    Eaton, R.R.; Bixler, N.E.; Glass, R.J.

    1989-11-01T23:59:59.000Z

    Current interest in storing high-level nuclear waste in underground repositories has resulted in an increased effort to understand the physics of water flow through low-permeability rock. The US Department of Energy is investigating a prospective repository site located in volcanic ash (tuff) hundreds of meters above the water table at Yucca Mountain, Nevada. Consequently, mathematical models and experimental procedures are being developed to provide a better understanding of the hydrology of this low-permeability, partially saturated, fractured rock. Modeling water flow in the vadose zone in soils and in relatively permeable rocks such as sandstone has received considerable attention for many years. The treatment of flow (including nonisothermal conditions) through materials such as the Yucca Mountain tuffs, however, has not received the same level of attention, primarily because it is outside the domain of agricultural and petroleum technology. This paper reviews the status of modeling and experimentation currently being used to understand and predict water flow at the proposed repository site. Several areas of research needs emphasized by the review are outlined. The extremely nonlinear hydraulic properties of these tuffs in combination with their heterogeneous nature makes it a challenging and unique problem from a computational and experimental view point. 101 refs., 14 figs., 1 tab.

  5. Two Pile Move-Size Dynamic Nim Arthur Holshouser1 and Harold Reiter2

    E-Print Network [OSTI]

    Reiter, Harold

    Two Pile Move-Size Dynamic Nim Arthur Holshouser1 and Harold Reiter2 13600 Bullard St., Charlotte consisting of two-pile counter pickup games for which the maximum number of counters that can be removed in his turn first chooses one of the piles, and his choice of piles can change from move to move. He

  6. Making the Right Moves: Guiding Alpha-Expansion using Local Primal-Dual Gaps

    E-Print Network [OSTI]

    Rajamani, Sriram K.

    Making the Right Moves: Guiding Alpha-Expansion using Local Primal-Dual Gaps Dhruv Batra Toyota@microsoft.com Abstract This paper presents a new adaptive graph-cut based move-making algorithm for energy minimization-space to search over. At each step, it tries to greedily find the move-space that will lead to biggest de- crease

  7. An efficient computational model for macroscale simulations of moving contact lines

    E-Print Network [OSTI]

    Boyer, Edmond

    with CO2, for example). A major challenge in numerical simulations of moving contact linesAn efficient computational model for macroscale simulations of moving contact lines Y. Sui1 simulation of moving contact lines. The main purpose is to formulate and test a model wherein the macroscale

  8. Field of Pipe Dreams: Minimizing Maintenance Cost for Hand-Moved

    E-Print Network [OSTI]

    Morrow, James A.

    Field of Pipe Dreams: Minimizing Maintenance Cost for Hand-Moved Irrigation Systems February 6 Conclusion 11 2 #12;Page 3 of 12 Control #23 The "hand-move" irrigation system is widely used on small fields to minimize the maintenance time of a hand-move irrigation system under the following constraints: No part

  9. Purpose: This guide is designed to assist supervisors by providing coordination, safety and ergonomic guidance for office moves at SLAC.

    E-Print Network [OSTI]

    Wechsler, Risa H.

    and ergonomic guidance for office moves at SLAC. PREPARATION FOR THE MOVE Determine What Needs to be Moved be installed correctly. AFTER THE MOVE Have all of your staff complete the New Office Safety & Ergonomics Checklist on the Safe Office Moves website. Call (x4588) to schedule an ergonomic evaluation if needed

  10. Apparatus for weighing and identifying characteristics of a moving vehicle

    DOE Patents [OSTI]

    Muhs, J.D.; Jordan, J.K.; Tobin, K.W. Jr.; LaForge, J.V.

    1993-11-09T23:59:59.000Z

    Apparatus for weighing a vehicle in motion is provided by employing a plurality of elongated fiber-optic sensors defined by an optical fiber embedded in an encasement of elastomeric material and disposed parallel to each other on the roadway in the path of moving vehicles. Each fiber-optic sensor is provided with contact grid means which can be selectively altered to provide the fiber-optic sensors with sensitivities to vehicular weight different from each other for weighing vehicles in an extended weight range. Switch means are used in conjunction with the fiber-optic sensors to provide signals indicative of the speed of the moving vehicle, the number of axles on the vehicle, weight distribution, tire position, and the wheelbase of the vehicle. The use of a generally N-shaped configuration of switch means also provides a determination of the number of tires on each axle and the tire footprint. When switch means in this configuration are formed of optical fibers, the extent of light transmission through the fibers during contact with the tires of the vehicle is indicative of the vehicle weight. 15 figures.

  11. Apparatus for weighing and identifying characteristics of a moving vehicle

    DOE Patents [OSTI]

    Muhs, Jeffrey D. (Clinton, TN); Jordan, John K. (Oak Ridge, TN); Tobin, Jr., Kenneth W. (Harriman, TN); LaForge, John V. (Knoxville, TN)

    1993-01-01T23:59:59.000Z

    Apparatus for weighing a vehicle in motion is provided by employing a plurality of elongated fiber-optic sensors defined by an optical fiber embedded in an encasement of elastomeric material and disposed parallel to each other on the roadway in the path of moving vehicles. Each fiber-optic sensor is provided with contact grid means which can be selectively altered to provide the fiber-optic sensors with sensitivities to vehicular weight different from each other for weighing vehicles in an extended weight range. Switch means are used in conjunction with the fiber-optic sensors to provide signals indicative of the speed of the moving vehicle, the number of axles on the vehicle, weight distribution, tire position, and the wheelbase of the vehicle. The use of a generally N-shaped configuration of switch means also provides a determination of the number of tires on each axle and the tire footprint. When switch means in this configuration are formed of optical fibers, the extent of light transmission through the fibers during contact with the tires of the vehicle is indicative of the vehicle weight.

  12. Gas production potential of disperse low-saturation hydrate accumulations in oceanic sediments

    E-Print Network [OSTI]

    Moridis, George J.; Sloan, E. Dendy

    2006-01-01T23:59:59.000Z

    EG. Formation of gas hydrates in natural gas transmissiongeology of natural gas hydrates. Amsterdam: Springer-Verlag;Soloviev, VA. Submarine gas hydrates. St. Petersburg;1998.

  13. Connate Water Saturation -Irreducible or Not: the Key to Reliable Hydraulic Rock Typing in Reservoirs Straddling Multiple Capillary Windows

    E-Print Network [OSTI]

    Torres-Verdn, Carlos

    of flow capacity. High in-situ capillary pressure causes connate water saturation in reservoir rocks petrophysical analysis based solely on conventional logs, including gamma ray, neutron porosity, bulk densitySPE 166082 Connate Water Saturation - Irreducible or Not: the Key to Reliable Hydraulic Rock Typing

  14. Active control of the resistive wall mode with power saturation Li Li, Yue Liu, and Yueqiang Liu

    E-Print Network [OSTI]

    Active control of the resistive wall mode with power saturation Li Li, Yue Liu, and Yueqiang Liu://pop.aip.org/about/rights_and_permissions #12;Active control of the resistive wall mode with power saturation Li Li,1,a) Yue Liu,1 and Yueqiang, 116024, People's Republic of China 2 Euratom/CCFE Fusion Association, Culham Science Centre, Abingdon OX

  15. Saturated State of the Nonlinear Small-Scale Dynamo A. A. Schekochihin,1,* S. C. Cowley,1,2

    E-Print Network [OSTI]

    Hammett, Greg

    Saturated State of the Nonlinear Small-Scale Dynamo A. A. Schekochihin,1,* S. C. Cowley,1,2 S. F with small-scale direction reversals. We propose a model in which saturation is achieved as a result `. Thus, the problem has two scale ranges: the hydro- dynamic (Kolmogorov) inertial range `0 ` ` Reÿ3

  16. The MOVE-Step model for article introductions Introductions to academic articles are frequently written according to the MOVE-Step pat-

    E-Print Network [OSTI]

    Kielmann, Thilo

    The MOVE-Step model for article introductions Introductions to academic articles are frequently in academic and research settings., Cambridge, CUP.) Move 1 Establishing a territory Step 1 Claiming Announcing present research Step 2 Announcing principal findings Step 3 Indicating research article structure

  17. Quantization of systems with temporally varying discretization II: Local evolution moves

    E-Print Network [OSTI]

    Philipp A Hoehn

    2014-10-27T23:59:59.000Z

    Several quantum gravity approaches and field theory on an evolving lattice involve a discretization changing dynamics generated by evolution moves. Local evolution moves in variational discrete systems (1) are a generalization of the Pachner evolution moves of simplicial gravity models, (2) update only a small subset of the dynamical data, (3) change the number of kinematical and physical degrees of freedom, and (4) generate a dynamical coarse graining or refining of the underlying discretization. To systematically explore such local moves and their implications in the quantum theory, this article suitably expands the quantum formalism for global evolution moves, constructed in a companion paper, by employing that global moves can be decomposed into sequences of local moves. This formalism is spelled out for systems with Euclidean configuration spaces. Various types of local moves, the different kinds of constraints generated by them, the constraint preservation and possible divergences in resulting state sums are discussed. It is shown that non-trivial local coarse graining moves entail a non-unitary projection of (physical) Hilbert spaces and `fine grained' Dirac observables defined on them. Identities for undoing a local evolution move with its (time reversed) inverse are derived. Finally, the implications of these results for a Pachner move generated dynamics in simplicial quantum gravity models are commented on.

  18. Isolating and moving single atoms using silicon nanocrystals

    DOE Patents [OSTI]

    Carroll, Malcolm S. (Albuquerque, NM)

    2010-09-07T23:59:59.000Z

    A method is disclosed for isolating single atoms of an atomic species of interest by locating the atoms within silicon nanocrystals. This can be done by implanting, on the average, a single atom of the atomic species of interest into each nanocrystal, and then measuring an electrical charge distribution on the nanocrystals with scanning capacitance microscopy (SCM) or electrostatic force microscopy (EFM) to identify and select those nanocrystals having exactly one atom of the atomic species of interest therein. The nanocrystals with the single atom of the atomic species of interest therein can be sorted and moved using an atomic force microscope (AFM) tip. The method is useful for forming nanoscale electronic and optical devices including quantum computers and single-photon light sources.

  19. Defense on the Move: Ant-Based Cyber Defense

    SciTech Connect (OSTI)

    Fink, Glenn A.; Haack, Jereme N.; McKinnon, Archibald D.; Fulp, Errin W.

    2014-04-15T23:59:59.000Z

    Many common cyber defenses (like firewalls and IDS) are as static as trench warfare allowing the attacker freedom to probe them at will. The concept of Moving Target Defense (MTD) adds dynamism to the defender side, but puts the systems to be defended themselves in motion, potentially at great cost to the defender. An alternative approach is a mobile resilient defense that removes attackers ability to rely on prior experience without requiring motion in the protected infrastructure itself. The defensive technology absorbs most of the cost of motion, is resilient to attack, and is unpredictable to attackers. The Ant-Based Cyber Defense (ABCD) is a mobile resilient defense providing a set of roaming, bio-inspired, digital-ant agents working with stationary agents in a hierarchy headed by a human supervisor. The ABCD approach provides a resilient, extensible, and flexible defense that can scale to large, multi-enterprise infrastructures like the smart electric grid.

  20. A Co-moving Coordinate System for Relativistic Hydrodynamics

    E-Print Network [OSTI]

    Scott Pratt

    2006-12-03T23:59:59.000Z

    The equations of relativistic hydrodynamics are transformed so that steps forward in time preserves local simultaneity. In these variables, the space-time coordinates of neighboring points on the mesh are simultaneous according to co-moving observers. Aside from the time step varying as a function of the location on the mesh, the local velocity gradient and the local density then evolve according to non-relativistic equations of motion. Analytic solutions are found for two one-dimensional cases with constant speed of sound. One solution has a Gaussian density profile when mapped into the new coordinates. That solution is analyzed for the effects of longitudinal acceleration in relativistic heavy ion collisions at RHIC, especially in regards to two-particle correlation measurements of the longitudinal size.

  1. Shielding of a moving test charge in a quantum plasma

    SciTech Connect (OSTI)

    Else, D.; Kompaneets, R.; Vladimirov, S. V. [School of Physics, University of Sydney, Sydney, New South Wales 2006 (Australia)

    2010-08-15T23:59:59.000Z

    The linearized potential of a moving test charge in a one-component fully degenerate fermion plasma is studied using the Lindhard dielectric function. The motion is found to greatly enhance the Friedel oscillations behind the charge, especially for velocities larger than half of the Fermi velocity, in which case the asymptotic behavior of their amplitude changes from 1/r{sup 3} to 1/r{sup 2.5}. In the absence of the quantum recoil (tunneling) the potential reduces to a form similar to that in a classical Maxwellian plasma, with a difference being that the plasma oscillations behind the charge at velocities larger than the Fermi velocity are not Landau damped.

  2. Down-flow moving-bed gasifier with catalyst recycle

    DOE Patents [OSTI]

    Halow, John S. (Waynesburg, PA)

    1999-01-01T23:59:59.000Z

    The gasification of coal and other carbonaceous materials by an endothermic gasification reaction is achieved in the presence of a catalyst in a down-flow, moving-bed gasifier. Catalyst is removed along with ash from the gasifier and is then sufficiently heated in a riser/burner by the combustion of residual carbon in the ash to volatilize the catalyst. This volatilized catalyst is returned to the gasifier where it uniformly contacts and condenses on the carbonaceous material. Also, the hot gaseous combustion products resulting from the combustion of the carbon in the ash along with excess air are introduced into the gasifier for providing heat energy used in the endothermic reaction.

  3. Down-flow moving-bed gasifier with catalyst recycle

    DOE Patents [OSTI]

    Halow, J.S.

    1999-04-20T23:59:59.000Z

    The gasification of coal and other carbonaceous materials by an endothermic gasification reaction is achieved in the presence of a catalyst in a down-flow, moving-bed gasifier. Catalyst is removed along with ash from the gasifier and is then sufficiently heated in a riser/burner by the combustion of residual carbon in the ash to volatilize the catalyst. This volatilized catalyst is returned to the gasifier where it uniformly contacts and condenses on the carbonaceous material. Also, the hot gaseous combustion products resulting from the combustion of the carbon in the ash along with excess air are introduced into the gasifier for providing heat energy used in the endothermic reaction. 1 fig.

  4. Saturation Physics in Ultra High Energy Cosmic Rays: Heavy Quark Production

    E-Print Network [OSTI]

    V. P. Goncalves; M. V. T. Machado

    2007-03-30T23:59:59.000Z

    In this work we estimate the heavy quark production in the interaction of ultra high energy cosmic rays in the atmosphere, considering that the primary cosmic ray is a proton or a photon. At these energies the saturation momentum Q_{sat}^2 stays above the hard scale \\mu_c^2=4m_c^2, implying charm production probing the saturation regime. In particular, we show that the ep HERA data presents a scaling on \\tau_c = (Q^2+\\mu_c^2)/Q_{sat}^2. We derive our results considering the dipole picture and the Color Glass Condensate formalism, which one shows to be able to describe the heavy quark production in photon-proton and proton-proton collisions. Nuclear effects are considered in computation of cross sections for scattering on air nuclei. Implications on the flux of prompt leptons at the earth are analyzed and a large suppression is predicted.

  5. Estimating Saturated Hydraulic Conductivity from Surface Ground-Penetrating Radar Monitoring of Infiltration

    E-Print Network [OSTI]

    Lger, Emmanuel; Coquet, Yves

    2013-01-01T23:59:59.000Z

    In this study we used Hydrus-1D to simulate water infiltration from a ring infiltrometer. We generated water content profiles at each time step of infiltration, based on a particular value of the saturated hydraulic conductivity while knowing the other van Genuchten parameters. Water content profiles were converted to dielectric permittivity profiles using the Complex Refractive Index Method relation. We then used the GprMax suite of programs to generate radargrams and to follow the wetting front using arrival time of electromagnetic waves recorded by a Ground-Penetrating Radar (GPR). Theoretically, the depth of the inflection point of the water content profile simulated at any infiltration time step is related to the peak of the reflected amplitude recorded in the corresponding trace in the radargram. We used this relationship to invert the saturated hydraulic conductivity for constant and falling head infiltrations. We present our method on synthetic examples and on two experiments carried out on sand. We f...

  6. Methane Hydrate Formation and Dissociation in a PartiallySaturated Core-Scale Sand Sample

    SciTech Connect (OSTI)

    Kneafsey, Timothy J.; Tomutsa, Liviu; Moridis, George J.; Seol,Yongkoo; Freifeld, Barry M.; Taylor, Charles E.; Gupta, Arvind

    2005-11-03T23:59:59.000Z

    We performed a sequence of tests on a partiallywater-saturated sand sample contained in an x-ray transparent aluminumpressure vessel that is conducive to x-ray computed tomography (CT)observation. These tests were performed to gather data for estimation ofthermal properties of the sand/water/gas system and thesand/hydrate/water/gas systems, as well as data to evaluate the kineticnature of hydrate dissociation. The tests included mild thermalperturbations for the estimation of the thermal properties of thesand/water/gas system, hydrate formation, thermal perturbations withhydrate in the stability zone, hydrate dissociation through thermalstimulation, additional hydrate formation, and hydrate dissociationthrough depressurization with thermal stimulation. Density changesthroughout the sample were observed as a result of hydrate formation anddissociation, and these processes induced capillary pressure changes thataltered local water saturation.

  7. Transducerless field orientation concepts employing saturation-induced saliencies in induction machines

    SciTech Connect (OSTI)

    Jansen, P.L. [MK Rail Corp., Boise, ID (United States); Lorenz, R.D. [Univ. of Wisconsin, Madison, WI (United States). Dept. of Electrical and Computer Engineering

    1995-12-31T23:59:59.000Z

    This paper explores the tracking of high-frequency magnetic saliencies created by saturation as a means of continuously estimating the position and magnitude of flux for transducerless field orientated control at zero and low speed operation. Tracking is based upon inverter-generated high-frequency signal injection with demodulation incorporating heterodyning and a closed-loop tracking filter. Integration of the tracking scheme with the voltage model in a closed-loop flux observer topology is proposed as an attractive means of achieving very wide speed range transducerless field oriented control. The focus is toward induction machines, the applicability to surface-mounted permanent magnet synchronous machines is also briefly discussed. Experimental evaluation of saturation effects in two induction machines is included.

  8. Breathing dynamics of an asymmetric Gaussian beam propagating in a saturable absorbing medium

    SciTech Connect (OSTI)

    Ianetz, D.; Kaganovskii, Yu.; Rosenbluh, M. [Jack and Pearl Resnick Institute for Advanced Technology, Department of Physics, Bar-Ilan University, Ramat-Gan IL-52900 (Israel); Wilson-Gordon, A. D. [Department of Chemistry, Bar-Ilan University, Ramat Gan IL-52900 (Israel)

    2010-12-15T23:59:59.000Z

    Propagation of an asymmetric Gaussian beam in a medium with saturated nonlinear refractive index is analyzed using a 'collective variable approach' to solve the general nonlinear Schroedinger equation and compared with that of a symmetric beam in both lossless and lossy media. For a lossless medium, we construct a diagram which defines regions of oscillatory and diffractive propagation of an asymmetric beam and compare it with that of a symmetric beam. We detect breathing dynamics of the widths and amplitude of the asymmetric beam in the oscillatory regime of propagation and identify two different types of width and amplitude beating, Type 1 and 2, depending on the initial beam energy and saturation constant of the medium. This is in contrast to a cubic-quintic medium where only one type of beating is obtained.

  9. Rapidity dependence of saturation in inclusive HERA data with the rcBK equation

    E-Print Network [OSTI]

    Jan Cepila; Jess Guillermo Contreras

    2015-01-27T23:59:59.000Z

    The contribution of the different terms of the running-coupling Balistky-Kovchegov (rcBK) equation to the description of inclusive HERA data is discussed. Within this framework an alternative definition of the saturation scale is presented. The definition is based on the ratio of the term corresponding to the recombination of two dipoles to the term corresponding to a dipole splitting. A similar ratio is used to study the contribution of the recombination term to the evolution of inclusive HERA data with rapidity. It is found that, although the data are well described, the behaviour of the different terms of the rcBK equation for HERA kinematics is not what it is naively expected from saturation arguments.

  10. Inversion of field-scale partitioning tracer response for characterizing oil saturation distribution: a streamline approach

    E-Print Network [OSTI]

    Iliassov, Pavel Alexandrovich

    2000-01-01T23:59:59.000Z

    INVERSION OF FIELD-SCALE PARTITIONING TRACER RESPONSE FOR CHARACTERIZING OIL SATURATION DISTRIBUTION: A STREAMLINE APPROACH A Thesis by PAVEL ALEXANDROVICH ILIASSOV Submitted to the Office of Graduate Studies of Texas A&M University... A Thesis by PAVEL ALEXANDROVICH ILIASSOV Submitted to Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE Approved as to style and content by: c 4- Akhil Datta-Gupta (Chair of Committee...

  11. The effect of an initial gas saturation on the performance of a waterflood

    SciTech Connect (OSTI)

    Dykstra, H.

    1995-12-31T23:59:59.000Z

    The behavior of a waterflood is affected, among other factors, by the initial gas saturation at the start of injection. To illustrate this effect on oil rate and on the water-oil ratio (WOR), calculations were made with the Dykstra-Parsons layered system model. Two cases were chosen, one for a high gravity oil with a low mobility ratio, and one for a low gravity oil with a relatively high mobility ratio. The factors that effect the recovery of oil are described. The ideal situation for calculating a waterflood performance, would be that the values of all of the parameters to be used in the model correctly define the reservoir and fluid properties and the displacement process. The more closely the parameters define the system, the greater will be the confidence in the predicted results. If production history is available, a history match can be made. Certain parameters can then be adjusted to obtain a better match with actual performance before predictions are made of future performance. Examples are given for two waterfloods. The results of the study show a substantial decrease in maximum oil rate and a substantial rise in the level of the WOR-recovery curve with increase in initial gas saturation. These types of results, showing the effect of an initial gas saturation, have not heretofore been published.

  12. Residual-oil-saturation-technology test, Bell Creek Field, Montana. Final report

    SciTech Connect (OSTI)

    Not Available

    1981-06-01T23:59:59.000Z

    A field test was conducted of the technology available to measure residual oil saturation following waterflood secondary oil recovery processes. The test was conducted in a new well drilled solely for that purpose, located immediately northwest of the Bell Creek Micellar Polymer Pilot. The area where the test was conducted was originally drilled during 1968, produced by primary until late 1970, and was under line drive waterflood secondary recovery until early 1976, when the area was shut in at waterflood depletion. This report presents the results of tests conducted to determine waterflood residual oil saturation in the Muddy Sandstone reservoir. The engineering techniques used to determine the magnitude and distribution of the remaining oil saturation included both pressure and sidewall cores, conventional well logs (Dual Laterolog - Micro Spherically Focused Log, Dual Induction Log - Spherically Focused Log, Borehole Compensated Sonic Log, Formation Compensated Density-Compensated Neutron Log), Carbon-Oxygen Logs, Dielectric Logs, Nuclear Magnetism Log, Thermal Decay Time Logs, and a Partitioning Tracer Test.

  13. Experimental control analysis of a fuel gas saturator. Final report. [Multivariable

    SciTech Connect (OSTI)

    Terwilliger, G.E.; Brower, A.S.; Baheti, R.S.; Smith, R.E.; Brown, D.H.

    1985-01-01T23:59:59.000Z

    The multivariable control of the clean fuel gas saturator of a coal gasification process has been demonstrated. First principle process models described the process dynamics from which linear models were generated and used for the actual control designs. The multivariable control was designed, its response to transients simulated and the controls were implemented in a computer controller for a fuel gas saturator. The test results obtained for the gas flow transients showed good correlation with the computer simulations, giving confidence in the ability of the simulation to predict the plant performance for other transients. In this study, both time and frequency domain multivariable design techniques were applied to provide the best possible design and to determine their relative effectiveness. No clear guidelines resulted; it appears that the selection may be made on the basis of personal preference, experience or the availability of computer-aided design tools, rather than inherent technical differences. This EPRI/GE fuel gas saturator control demonstration has shown that multivariable design techniques can be applied to a real process and that practical controls are developed. With suitable process models, presently available computer-aided control design software allows the control design, evaluation and implementation to be completed in a reasonable time period. The application of these techniques to power generation processes is recommended.

  14. A Study of the Dielectric Properties of Dry and Saturated Green River Oil Shale

    SciTech Connect (OSTI)

    Sweeney, J; Roberts, J; Harben, P

    2007-02-07T23:59:59.000Z

    We measured dielectric permittivity of dry and fluid-saturated Green River oil shale samples over a frequency range of 1 MHz to 1.8 GHz. Dry sample measurements were carried out between room temperature and 146 C, saturated sample measurements were carried out at room temperature. Samples obtained from the Green River formation of Wyoming and from the Anvil Points Mine in Colorado were cored both parallel and perpendicular to layering. The samples, which all had organic richness in the range of 10-45 gal/ton, showed small variations between samples and a relatively small level of anisotropy of the dielectric properties when dry. The real and imaginary part of the relative dielectric permittivity of dry rock was nearly constant over the frequency range observed, with low values for the imaginary part (loss factor). Saturation with de-ionized water and brine greatly increased the values of the real and imaginary parts of the relative permittivity, especially at the lower frequencies. Temperature effects were relatively small, with initial increases in permittivity to about 60 C, followed by slight decreases in permittivity that diminished as temperature increased. Implications of these observations for the in situ electromagnetic, or radio frequency (RF) heating of oil shale to produce oil and gas are discussed.

  15. Regulation of natural monopolies

    E-Print Network [OSTI]

    Joskow, Paul L.

    2005-01-01T23:59:59.000Z

    This chapter provides a comprehensive overview of the theoretical and empirical literature on the regulation of natural monopolies. It covers alternative definitions of natural monopoly, regulatory goals, alternative ...

  16. Natural Gas Monthly Update

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

    other liquids including biofuels and natural gas liquids. Natural Gas Exploration and reserves, storage, imports and exports, production, prices, sales. Electricity Sales, revenue...

  17. Borrowing Nature's Polymers

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

    Borrowing Nature's Polymers 1663 Los Alamos science and technology magazine Latest Issue:January 2015 All Issues submit Borrowing Nature's Polymers Los Alamos scientists are...

  18. Natural Resources Districts (Nebraska)

    Broader source: Energy.gov [DOE]

    This statute establishes Natural Resources District, encompassing all of the area of the state, to conserve, protect, develop, and manage Nebraska's natural resources. These districts replace and...

  19. Historical Natural Gas Annual

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

    8 The Historical Natural Gas Annual contains historical information on supply and disposition of natural gas at the national, regional, and State level as well as prices at...

  20. Natural Gas Rules (Louisiana)

    Broader source: Energy.gov [DOE]

    The Louisiana Department of Natural Resources administers the rules that govern natural gas exploration and extraction in the state. DNR works with the Louisiana Department of Environmental...

  1. Historical Natural Gas Annual

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

    6 The Historical Natural Gas Annual contains historical information on supply and disposition of natural gas at the national, regional, and State level as well as prices at...

  2. Historical Natural Gas Annual

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

    7 The Historical Natural Gas Annual contains historical information on supply and disposition of natural gas at the national, regional, and State level as well as prices at...

  3. Manure On The Move UWEX and UW-Madison

    E-Print Network [OSTI]

    Balser, Teri C.

    against gravity => ET Air-filled porosity => gas exchange Requires range of pore size Hope drainage and Natural History Survey, UWEX #12;Problems Increasing? Brown, smelly water coming out the faucet avoid many cases No applications when tiles flowing, heavy rain forecast, soil very wet Plugs

  4. Design, Test and Demonstration of Saturable Reactor High-Temperature Superconductor Fault Current Limiters

    SciTech Connect (OSTI)

    Frank Darmann; Robert Lombaerde; Franco Moriconi; Albert Nelson

    2011-10-31T23:59:59.000Z

    Zenergy Power has successfully designed, built, tested, and installed in the US electrical grid a saturable reactor Fault Current Limiter. Beginning in 2007, first as SC Power Systems and from 2008 as Zenergy Power, Inc., ZP used DOE matching grant and ARRA funds to help refine the design of the saturated reactor fault current limiter. ZP ultimately perfected the design of the saturated reactor FCL to the point that ZP could reliably design a suitable FCL for most utility applications. Beginning with a very basic FCL design using 1G HTS for a coil housed in a LN2 cryostat for the DC bias magnet, the technology progressed to a commercial system that was offered for sale internationally. Substantial progress was made in two areas. First, the cryogenics cooling system progressed from a sub-cooled liquid nitrogen container housing the HTS coils to cryostats utilizing dry conduction cooling and reaching temperatures down to less than 20 degrees K. Large, round cryostats with ??warm bore? diameters of 1.7 meters enabled the design of large tanks to hold the AC components. Second, the design of the AC part of the FCL was refined from a six legged ??spider? design to a more compact and lighter design with better fault current limiting capability. Further refinement of the flux path and core shape led to an efficient saturated reactor design requiring less Ampere-turns to saturate the core. In conclusion, the development of the saturable reactor FCL led to a more efficient design not requiring HTS magnets and their associated peripheral equipment, which yielded a more economical product in line with the electric utility industry expectations. The original goal for the DOE funding of the ZP project ??Design, Test and Demonstration of Saturable Reactor High-Temperature Superconductor Fault Current Limiters? was to stimulate the HTS wire industry with, first 1G, then 2G, HTS wire applications. Over the approximately 5 years of ZP??s product development program, the amount of HTS wire employed per FCL and its cost as a percentage of the total FCL product content had not dropped substantially from an unsustainable level of more than 50% of the total cost of the FCL, nor had the availability increased (today the availability of 2G wire for commercial applications outside of specific partnerships with the leading 2G wire manufacturers is extremely limited). ZP had projected a very significant commercial potential for FCLs with higher performance and lower costs compared to the initial models built with 1G wire, which would come about from the widespread availability of low-cost, high-performance 2G HTS wire. The potential for 2G wires at greatly reduced performance-based prices compared to 1G HTS conductor held out the potential for the commercial production of FCLs at price and performance levels attractive to the utility industry. However, the price of HTS wire did not drop as expected and today the available quantities of 2G wire are limited, and the price is higher than the currently available supplies of 1G wire. The commercial option for ZP to provide a reliable and reasonably priced FCL to the utility industry is to employ conventional resistive conductor DC electromagnets to bias the FCL. Since the premise of the original funding was to stimulate the HTS wire industry and ZP concluded that copper-based magnets were more economical for the foreseeable future, DOE and ZP decided to mutually terminate the project.

  5. Importance of Low Permeability Natural Gas Reservoirs (released in AEO2010)

    Reports and Publications (EIA)

    2010-01-01T23:59:59.000Z

    Production from low-permeability reservoirs, including shale gas and tight gas, has become a major source of domestic natural gas supply. In 2008, low-permeability reservoirs accounted for about 40% of natural gas production and about 35% of natural gas consumption in the United States. Permeability is a measure of the rate at which liquids and gases can move through rock. Low-permeability natural gas reservoirs encompass the shale, sandstone, and carbonate formations whose natural permeability is roughly 0.1 millidarcies or below. (Permeability is measured in darcies.)

  6. Heat-driven acoustic cooling engine having no moving parts

    DOE Patents [OSTI]

    Wheatley, John C. (Los Alamos, NM); Swift, Gregory W. (Santa Fe, NM); Migliori, Albert (Santa Fe, NM); Hofler, Thomas J. (Los Alamos, NM)

    1989-01-01T23:59:59.000Z

    A heat-driven acoustic cooling engine having no moving parts receives heat from a heat source. The acoustic cooling engine comprises an elongated resonant pressure vessel having first and second ends. A compressible fluid having a substantial thermal expansion coefficient and capable of supporting an acoustic standing wave is contained in the resonant pressure vessel. The heat source supplies heat to the first end of the vessel. A first heat exchanger in the vessel is spaced-apart from the first end and receives heat from the first end. A first thermodynamic element is adjacent to the first heat exchanger and converts some of the heat transmitted by the first heat exchanger into acoustic power. A second thermodynamic element has a first end located spaced-apart from the first thermodynamic element and a second end farther away from the first thermodynamic element than is its first end. The first end of the second thermodynamic element heats while its second end cools as a consequence of the acoustic power. A second heat exchanger is adjacent to and between the first and second thermodynamic elements. A heat sink outside of the vessel is thermally coupled to and receives heat from the second heat exchanger. The resonant pressure vessel can include a housing less than one-fourth wavelength in length coupled to a reservoir. The housing can include a reduced diameter portion communicating with the reservoir.

  7. Casimir Friction Force and Energy Dissipation for Moving Harmonic Oscillators

    E-Print Network [OSTI]

    Johan S. Hye; Iver Brevik

    2010-09-15T23:59:59.000Z

    The Casimir friction problem for a pair of dielectric particles in relative motion is analyzed, utilizing a microscopic model in which we start from statistical mechanics for harmonically oscillating particles at finite temperature moving nonrelativistically with constant velocity. The use of statistical mechanics in this context has in our opinion some definite advantages, in comparison with the more conventional quantum electrodynamic description of media that involves the use of a refractive index. The statistical-mechanical description is physical and direct, and the oscillator model, in spite of its simplicity, is nevertheless able to elucidate the essentials of the Casimir friction. As is known, there are diverging opinions about this kind of friction in the literature. Our treatment elaborates upon, and extends, an earlier theory presented by us back in 1992. There we found a finite friction force at any finite temperature, whereas at zero temperature the model led to a zero force. As an additional development in the present paper we evaluate the energy dissipation making use of an exponential cutoff truncating the relative motion of the oscillators. For the dissipation we also establish a general expression that is not limited to the simple oscillator model.

  8. Horizon effects with surface waves on moving water

    E-Print Network [OSTI]

    Germain Rousseaux; Philippe Maissa; Christian Mathis; Pierre Coullet; Thomas G. Philbin; Ulf Leonhardt

    2010-10-01T23:59:59.000Z

    Surface waves on a stationary flow of water are considered, in a linear model that includes the surface tension of the fluid. The resulting gravity-capillary waves experience a rich array of horizon effects when propagating against the flow. In some cases three horizons (points where the group velocity of the wave reverses) exist for waves with a single laboratory frequency. Some of these effects are familiar in fluid mechanics under the name of wave blocking, but other aspects, in particular waves with negative co-moving frequency and the Hawking effect, were overlooked until surface waves were investigated as examples of analogue gravity [Sch\\"utzhold R and Unruh W G 2002 Phys. Rev. D 66 044019]. A comprehensive presentation of the various horizon effects for gravity-capillary waves is given, with emphasis on the deep water/short wavelength case kh>>1 where many analytical results can be derived. A similarity of the state space of the waves to that of a thermodynamic system is pointed out.

  9. A simple model for the CaCO3 saturation state of the ocean: The ``Strangelove,'' the ``Neritan,'' and the ``Cretan'' Ocean

    E-Print Network [OSTI]

    Zeebe, Richard E.

    A simple model for the CaCO3 saturation state of the ocean: The ``Strangelove,'' the ``Neritan, Netherlands (p.westbroek@chem.leidenuniv.nl) [1] A simple model of the CaCO3 saturation state of the ocean models. Despite its limitations, the model- calculated CaCO3 saturation state of today's ocean agrees

  10. Natural Gas Exploration

    E-Print Network [OSTI]

    Boyer, Elizabeth W.

    . Exploration and extraction of natural gas from the Marcellus shale is a potentially valuable economic stimulus for landowners. You might be wondering how the nation's economic situation is affecting the market for naturalNatural Gas Exploration: A Landowners Guide to Financial Management Natural Gas Exploration

  11. Research Highlights Nature Nanotechnology

    E-Print Network [OSTI]

    Mller, Markus

    2009 APS Research Highlights Nature Nanotechnology Published online: 17 July 2009 | doi:10 perfect fluid. Phys. Rev. Lett. 103, 025301 (2009). | Article |1. Nature Nanotechnology ISSN 1748 : Nature Nanotechnology http://www.nature.com/nnano/reshigh/2009/0709/full/nnano.2009.222.html 1 of 1 18

  12. Webinar: Science Magazine Highlight: Moving Towards Near Zero Platinum Fuel Cells

    Broader source: Energy.gov [DOE]

    Video recording of the webinar, Science Magazine Highlight: Moving Towards Near Zero Platinum Fuel Cells, originally presented on April 25, 2011.

  13. The Art of the Start: Moving Science from the Lab to the Marketplace

    ScienceCinema (OSTI)

    Larry Bock

    2010-01-08T23:59:59.000Z

    April 25, 2009 Berkeley Lab Nano*High lecture: The Art of the Start: Moving Science from the Lab to the Marketplace

  14. The Art of the Start: Moving Science from the Lab to the Marketplace

    SciTech Connect (OSTI)

    Larry Bock

    2009-06-01T23:59:59.000Z

    April 25, 2009 Berkeley Lab Nano*High lecture: The Art of the Start: Moving Science from the Lab to the Marketplace

  15. Meteorological Tables for Determination of Precipitable Water, Temperatures and Pressures Aloft for a Saturated Pseudoadiabatic Atmosphere -- in the Metric System

    E-Print Network [OSTI]

    Eihle, W. O.; Powers, R. J.; Clark, R.A.

    TR-16 1968 Meteorological Tables for Determination of Precipitable Water, Temperatures and Pressures Aloft for a Saturated Pseudoadiabatic Atmosphere?in the Metric System W.O. Eihle R.J. Powers R.A. Clark...

  16. A study of air flow through saturated porous media and its applications to in-situ air sparging

    E-Print Network [OSTI]

    Marulanda, Catalina, 1971-

    2001-01-01T23:59:59.000Z

    The efficiency of an in situ air sparging system is controlled by the extent of contact between injected air and contaminated soil and pore fluid. Characterizing the mechanisms governing air propagation through saturated ...

  17. Kinematics of Electrons in The Volume of a Planar Vacuum Diode in Regime of Saturation. Parameters of Hysteresis

    E-Print Network [OSTI]

    Dimitar G. Stoyanov

    2014-12-19T23:59:59.000Z

    The kinematics laws of electrons motion in the volume of a planar vacuum diode running in regime of current saturation are used. The characteristics of diode hysteresis in the conditions of S-figurative instability are got and analyzed.

  18. The development of large area saturable Bragg reflectors for the generation of widely-tunable ultra-short pulses

    E-Print Network [OSTI]

    Nabanja, Sheila P

    2012-01-01T23:59:59.000Z

    This thesis focuses on the realization of two photonic devices; 1) semiconductor lasers and 2) large area broadband Saturable Bragg Reflectors (SBRs). Semiconductor lasers explore the use of 3D and 2D quantum confinement ...

  19. The effect of sand grain size distribution on the minimum oil saturation necessary to support in-situ combustion

    E-Print Network [OSTI]

    Daniel, William Marvin

    1973-01-01T23:59:59.000Z

    THE EFFECT OF SAND GRAIN SIZE DISTRIBUTION ON THE MINIMUM OIL SATURATION NECESSARY TO SUPPORT IN-SITU COMBUSTION A Thesis by WILLIAM MARVIN DANIEL Submitted to the Graduate College of Texas ARM University in partial fulfillment... of the requirement for the degree of MASTER OF SCIENCE May 1973 Major Subject: Petroleum. Engineering THE EFFECT OF SAND GRAIN SIZE DISTRIBUTION ON THE MINIMUM OIL SATURATION NECESSARY TO SUPPORT IN-SITU COMBUSTION A Thesis by WILLIAM MARVIN DANIEL Approved...

  20. Statistical properties of the radiation from SASE FEL operating in a post-saturation regime with and without undulator tapering

    E-Print Network [OSTI]

    Schneidmiller, E A

    2015-01-01T23:59:59.000Z

    We describe statistical and coherence properties of the radiation from x-ray free electron lasers (XFEL) operating in the post-saturation regime. We consider practical case of the SASE3 FEL at the European XFEL. We perform comparison of the main characteristics of the X-ray FEL operating in the post-saturation regime with and without undulator tapering: efficiency, coherence time and degree of transverse coherence.

  1. Natural gas monthly

    SciTech Connect (OSTI)

    NONE

    1998-01-01T23:59:59.000Z

    The Natural Gas Monthly highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. From time to time, the Natural Gas Monthly features articles designed to assist readers in using and interpreting natural gas information.

  2. SATURATION OF THE MAGNETO-ROTATIONAL INSTABILITY IN STRONGLY RADIATION-DOMINATED ACCRETION DISKS

    SciTech Connect (OSTI)

    Jiang Yanfei; Stone, James M. [Department of Astrophysical Sciences, Princeton University, Princeton, NJ 08544 (United States); Davis, Shane W. [Canadian Institute for Theoretical Astrophysics, Toronto, ON M5S3H4 (Canada)

    2013-04-20T23:59:59.000Z

    The saturation level of the magneto-rotational instability (MRI) in a strongly radiation-dominated accretion disk is studied using a new Godunov radiation MHD code in the unstratified shearing box approximation. Since vertical gravity is neglected in this work, our focus is on how the MRI saturates in the optically thick mid-plane of the disk. We confirm that turbulence generated by the MRI is very compressible in the radiation-dominated regime, as found by previous calculations using the flux-limited diffusion approximation. We also find little difference in the saturation properties in calculations that use a larger horizontal domain (up to four times the vertical scale height in the radial direction). However, in strongly radiation pressure dominated disks (one in which the radiation energy density reaches {approx}1% of the rest mass energy density of the gas), we find that Maxwell stress from the MRI turbulence is larger than the value produced when radiation pressure is replaced with the same amount of gas pressure. At the same time, the ratio between Maxwell stress and Reynolds stress is increased by almost a factor of eight compared with the gas pressure dominated case. We suggest that this effect is caused by radiation drag, which acts like bulk viscosity and changes the effective magnetic Prandtl number of the fluid. Radiation viscosity significantly exceeds both the microscopic plasma viscosity and resistivity, ensuring that radiation-dominated systems occupy the high magnetic Prandtl number regime. Nevertheless, we find that radiative shear viscosity is negligible compared to the Maxwell stress and Reynolds stress in the flow. This may have important implications for the structure of radiation-dominated accretion disks.

  3. Thermalization, Isotropization and Elliptic Flow from Nonequilibrium Initial Conditions with a Saturation Scale

    E-Print Network [OSTI]

    Marco Ruggieri; Francesco Scardina; Salvatore Plumari; Vincenzo Greco

    2014-07-09T23:59:59.000Z

    In this article we report on our results about the computation of the elliptic flow of the quark-gluon-plasma produced in relativistic heavy ion collisions, simulating the expansion of the fireball by solving the relativistic Boltzmann equation for the parton distribution function tuned at a fixed shear viscosity to entropy density ratio $\\eta/s$. Our main goal is to put emphasis on the role of a saturation scale in the initial gluon spectrum, which makes the initial distribution far from a thermalized one. We find that the presence of the saturation scale reduces the efficiency in building-up the elliptic flow, even if the thermalization process is quite fast $\\tau_{therm} \\approx 0.8 \\,\\rm fm/c$ and the pressure isotropization even faster $\\tau_{isotr} \\approx 0.3 \\,\\rm fm/c$. The impact of the non-equilibrium implied by the saturation scale manifests for non-central collisions and can modify the estimate of the viscosity respect to the assumption of full thermalization in $p_T$-space. We find that the estimate of $\\eta/s$ is modified from $\\eta/s \\approx 2/4\\pi$ to $\\eta/s \\approx 1/4\\pi$ at RHIC and from $\\eta/s \\approx 3/4\\pi$ to $\\eta/s \\approx 2/4\\pi$ at LHC. We complete our investigation by a study of the thermalization and isotropization times of the fireball for different initial conditions and values of $\\eta/s$ showing how the latter affects both isotropization and thermalization. Lastly, we have seen that the range of values explored by the phase-space distribution function $f$ is such that at $p_T<0.5\\, \\rm GeV$ the inner part of the fireball stays with occupation number significantly larger than unity despite the fast longitudinal expansion, which might suggest the possibility of the formation of a transient Bose-Einstein Condensate.

  4. Fayalite Dissolution and Siderite Formation in Water-Saturated Supercritical CO2

    SciTech Connect (OSTI)

    Qafoku, Odeta; Kovarik, Libor; Kukkadapu, Ravi K.; Ilton, Eugene S.; Arey, Bruce W.; Tucek, Jiri; Felmy, Andrew R.

    2012-11-25T23:59:59.000Z

    Olivines, a significant constituent of basaltic rocks, have the potential to immobilize permanently CO2 after it is injected in the deep subsurface, due to carbonation reactions occurring between CO2 and the host rock. To investigate the reactions of fayalitic olivine with supercritical CO2 (scCO2) and formation of mineral carbonates, experiments were conducted at temperatures of 35 C to 80 C, 90 atm pressure and anoxic conditions. For every temperature, the dissolution of fayalite was examined both in the presence of liquid water and H2O-saturated scCO2. The experiments were conducted in a high pressure batch reactor at reaction time extending up to 85 days. The newly formed products were characterized using a comprehensive suite of bulk and surface characterization techniques X-ray diffraction, Transmission/Emission Mssbauer Spectroscopy, Scanning Electron Microscopy coupled with Focused Ion Beam, and High Resolution Transmission Electron Microscopy. Siderite with rhombohedral morphology was formed at 35 C, 50 C, and 80 C in the presence of liquid water and scCO2. In H2O-saturated scCO2, the formation of siderite was confirmed only at high temperature (80 C). Characterization of reacted samples in H2O-saturated scCO2 with high resolution TEM indicated that siderite formation initiated inside voids created during the initial steps of fayalite dissolution. Later stages of fayalite dissolution result in the formation of siderite in layered vertical structures, columns or pyramids with a rhombus base morphology.

  5. Influence of the electron spin resonance saturation on the power sensitivity of cryogenic sapphire resonators

    SciTech Connect (OSTI)

    Giordano, Vincent, E-mail: giordano@femto-st.fr; Grop, Serge; Bourgeois, Pierre-Yves; Kersal, Yann; Rubiola, Enrico [FEMTO-ST InstituteUMR 6174, CNRS/ENSMM/UFC/UTBM, 26 Chemin de l'pitaphe, 25000 Besanon (France)

    2014-08-07T23:59:59.000Z

    Here, we study the paramagnetic ions behavior in presence of a strong microwave electromagnetic field sustained inside a cryogenic sapphire whispering gallery mode resonator. The high frequency measurement resolution that can be now achieved by comparing two Cryogenic Sapphire Oscillators (CSOs) permit to observe clearly the non-linearity of the resonator power sensitivity. These observations that, in turn, allow us to optimize the CSO operation are well explained by the electron spin resonance saturation of the paramagnetic impurities contained in the sapphire crystal.

  6. IMPACT OF CURING TEMPERATURE ON THE SATURATED LIQUID PERMEABILITY OF SALTSTONE

    SciTech Connect (OSTI)

    Williams, F.; Harbour, J.

    2011-02-14T23:59:59.000Z

    This report focuses on the impact of curing temperature on the performance properties of simulated Saltstone mixes. The key performance property of interest is saturated liquid permeability (measured as hydraulic conductivity), an input to the Performance Assessment (PA) modeling for the Saltstone Disposal Facility (SDF). Therefore, the current study was performed to measure the dependence of saturated hydraulic conductivity on curing temperature of Saltstone mixes, to correlate these results with measurements of Young's moduli on the same samples and to compare the Scanning Electron Microscopy (SEM) images of the microstructure at each curing temperature in an effort to associate this significant changes in permeability with changes in microstructure. This work demonstrated that the saturated liquid permeability of Saltstone mixes depends significantly on the curing temperature. As the curing temperature increases, the hydraulic conductivity can increase over three orders of magnitude from roughly 10{sup -9} cm/sec to 10{sup -6} cm/sec over the temperature range of 20 C to 80 C. Although an increased aluminate concentration (at 0.22 M) in the ARP/MCU waste stream improves (decreases) saturated permeability for samples cured at lower temperatures, the permeabilities for samples cured at 60 C to 80 C are the same as the permeabilities measured for an equivalent mix but with lower aluminate concentration. Furthermore, it was demonstrated that the unsaturated flow apparatus (UFA) system can be used to measure hydraulic conductivity of Saltstone samples. The permeability results obtained using the UFA centrifuge system were equivalent within experimental error to the conventional permeameter results (the falling head method) obtained at MACTEC. In particular the UFA technique is best suited for the range of hydraulic conductivities between 10{sup -10} cm/sec to 10{sup -6} cm/sec. Measurements of dynamic Young's moduli (E) for these mixes revealed a correlation between E and hydraulic conductivity. Therefore, it is possible to use E values to estimate the values of hydraulic conductivity. Measurement of Young's modulus is much easier than the measurement of permeability of Saltstone mixes and facilitates the measurement of the time dependence hydraulic conductivity. The results presented in this report show that changes in permeability as a function of curing temperature appear to be related to microstructural changes in the cured Saltstone mixes. Backscattered electron microscopy images revealed significant differences between the samples cured at different temperatures.

  7. Consequences of parton's saturation and string's percolation on the developments of cosmic ray showers

    E-Print Network [OSTI]

    C. Pajares; D. Sousa; R. A. Vzquez

    2000-05-31T23:59:59.000Z

    At high gluon or string densities, gluons' saturation or the strong interaction among strings, either forming colour ropes or giving rise to string's percolation, induces a strong suppression in the particle multiplicities produced at high energy. This suppression implies important modifications on cosmic ray shower development. In particular, it is shown that it affects the depth of maximum, the elongation rate, and the behaviour of the number of muons at energies around 10^{17}-10^{18} eV. The existing cosmic ray data point out in the same direction.

  8. Simulation of Aerosol Behavior in a Saturated Atmosphere With the CONTAIN Code

    SciTech Connect (OSTI)

    Kljenak, Ivo; Mavko, Borut [Jozef Stefan Institute, Jamova cesta 39, 1000 Ljubljana (Slovenia)

    2002-07-01T23:59:59.000Z

    Experiments on aerosol behavior in an atmosphere containing saturated vapor, which were performed in the KAEVER experimental facility and proposed for the OECD International Standard Problem No. 44, were simulated with the CONTAIN thermal-hydraulic computer code. The purpose of the work was to assess the capability of the CONTAIN code to model aerosol condensation and deposition in a containment of a light-water-reactor nuclear power plant at severe accident conditions. Results of dry and wet aerosol concentrations in the test vessel atmosphere are presented and analyzed. (authors)

  9. Saturated absorption at nanowatt power levels using metastable xenon in a high-finesse optical cavity

    E-Print Network [OSTI]

    G. T. Hickman; T. B. Pittman; J. D. Franson

    2014-09-19T23:59:59.000Z

    Strong saturated absorption at nanowatt power levels has been demonstrated using metastable xenon in a high-finesse optical cavity. The use of metastable xenon allows a high quality factor of Q=2*10^8 to be achieved at relatively high atomic densities without any contamination or damage to the optical surfaces, which is often a problem when using high-density rubidium or other alkali atoms. This technique provides a relatively straightforward way to produce nonlinearities at the single-photon level with possible applications in quantum communications and computing.

  10. Temporal evolution of magnetic molecular shocks I. Moving grid simulations

    E-Print Network [OSTI]

    P. Lesaffre; J. -P. Chize; S. Cabrit; G. Pineau des Forts

    2004-07-28T23:59:59.000Z

    We present time-dependent 1D simulations of multifluid magnetic shocks with chemistry resolved down to the mean free path. They are obtained with an adaptive moving grid implemented with an implicit scheme. We examine a broad range of parameters relevant to conditions in dense molecular clouds, with preshock densities between 10^3 and 10^5 cm-3, velocities between 10 and 40 km/s, and three different scalings for the transverse magnetic field: B=0,0.1,1 \\mu G \\sqrt{n.cm3}. We first use this study to validate the results of Chi\\`eze, Pineau des For\\^ets & Flower (1998), in particular the long delays necessary to obtain steady C-type shocks, and we provide evolutionary time-scales for a much greater range of parameters. We also present the first time-dependent models of dissociative shocks with a magnetic precursor, including the first models of stationary CJ shocks in molecular conditions. We find that the maximum speed for steady C-type shocks is reached before the occurrence of a sonic point in the neutral fluid, unlike previously thought. As a result, the maximum speed for C-shocks is lower than previously believed. Finally, we find a large amplitude bouncing instability in J-type fronts near the H2 dissociation limit (u ~ 25-30 km/s), driven by H2 dissociation/reformation. At higher speeds, we find an oscillatory behaviour of short period and small amplitude linked to collisional ionisation of H. Both instabilities are suppressed after some time when a magnetic field is present. In a companion paper, we use the present simulations to validate a new semi-analytical construction method for young low-velocity magnetic shocks based on truncated steady-state models.

  11. The concept of setting aside areas for the preservation of natural values is not a recent phenomenon. Historical

    E-Print Network [OSTI]

    Queensland, University of

    of protected areas has tended to be in response to the loss of natural areas in which people have a vested#12;The concept of setting aside areas for the preservation of natural values is not a recent). More recently we have moved to more formal establishment of protected areas. The first national

  12. Discrete Mathematics and Theoretical Computer Science 7, 2005, 110 Two Pile Move-Size Dynamic Nim

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    Discrete Mathematics and Theoretical Computer Science 7, 2005, 110 Two Pile Move-Size Dynamic Nim of this paper is to solve a special class of combinational games consisting of two-pile counter pickup games of the games. Two players alternate moving. Each player in his turn first chooses one of the piles, and his

  13. Carnegie Mellon Moving from FT-CORBA to FT-CCM

    E-Print Network [OSTI]

    Narasimhan, Priya

    Carnegie Mellon Moving from FT-CORBA to FT-CCM MEAD: Middleware for Embedded Adaptive Dependability-CORBA to FT-CCM Background MEAD: Real-time fault-tolerant middleware being developed at Carnegie Mellon real-time and fault tolerance #12;3 Carnegie Mellon MEAD: Moving from FT-CORBA to FT-CCM MEAD

  14. Device Lets Monkey's Brain Move Robot Arm Research could one day aid amputees or paralysis victims

    E-Print Network [OSTI]

    Schwartz, Andrew

    Device Lets Monkey's Brain Move Robot Arm Research could one day aid amputees or paralysis victims successfully wired monkey brains to robot arms, raising hope that science is moving closer to finding ways to help paralyzed people control their world. Using their brains to control their robot arms, monkeys

  15. Control of a Mobile Modular Manipulator Moving on a Slope Yangmin Li, Yugang Liu

    E-Print Network [OSTI]

    Li, Yangmin

    Control of a Mobile Modular Manipulator Moving on a Slope Yangmin Li, Yugang Liu Department. An effective control method is applied to the ntobile mudular manipulator control in case of moving on a slope mobile basis and manipulator were studied in [I]. A hybrid control idea was presented for robot control

  16. Case Study: A Visual Tool for Moving Mesh Numerical Methods Daryl H. Hepting \\Lambda

    E-Print Network [OSTI]

    Zhang, Richard "Hao"

    . Com puter visualization of moving mesh methods is an extension of an approach using computersCase Study: A Visual Tool for Moving Mesh Numerical Methods Daryl H. Hepting \\Lambda darylh differential equations are indispensable in scientific and engineering research, where they are used to model

  17. Experimental test of scaling of mixing by chaotic advection in droplets moving through microfluidic channels

    E-Print Network [OSTI]

    Ismagilov, Rustem F.

    Experimental test of scaling of mixing by chaotic advection in droplets moving through microfluidic that predicts the scaling of chaotic mixing in a droplet moving through a winding microfluidic channel microfluidic channels.1 In microfluidic systems2,3 operating at low values of the Reynolds number Re, streams

  18. Indexing Moving Objects by Space Filling Curves in the Dual Space

    E-Print Network [OSTI]

    Kaiserslautern, Universität

    The Bdual ­ tree: Indexing Moving Objects by Space Filling Curves in the Dual Space By Man Lung Yiu Objects by Space Filling Curves in the Dual Space Introduction Related work Problem definition: Indexing Moving Objects by Space Filling Curves in the Dual Space Introduction Related work Problem

  19. Body Fitted Grid Generation Method with Moving Boundaries and Its Application for analysis of MEMS

    E-Print Network [OSTI]

    Tentzeris, Manos

    Body Fitted Grid Generation Method with Moving Boundaries and Its Application for analysis of MEMS these MEMS devices using body fitted grid generation method with moving boundaries is proposed. This technique is based on the finite-difference time-domain (FD-TD) method and a kind of grid generation

  20. Saturated Sodium Chloride Solution under an External Static Electric Field: a Molecular Dynamics Study

    E-Print Network [OSTI]

    Gan Ren; Yanting Wang

    2015-05-02T23:59:59.000Z

    The behavior of saturated aqueous sodium chloride solutions under a constant external electric field (E) was studied by molecular dynamics (MD) simulation. Our dynamic MD simulations have indicated that the irreversible nucleation process towards crystallization is accelerated by a moderate E, but retarded or even prohibited under a stronger E, which can be understood by the competition between self-diffusion and drift motion. The former increases with E resulting in the acceleration of the nucleation process, and the latter tears oppositely charged ions more apart under a stronger E leading to the deceleration of nucleation. Moreover, our steady-state MD simulations have indicated that a first-order phase transition happens in saturated solutions only when the applied E is below a certain threshold Ec, and the ratio of crystallized ions does not change with the electric field. The magnitude of Ec increases with concentration, because larger clusters are easy to form in a more concentrated solution and require a stronger E to dissociate them.

  1. A sampling-based Bayesian model for gas saturation estimationusing seismic AVA and marine CSEM data

    SciTech Connect (OSTI)

    Chen, Jinsong; Hoversten, Michael; Vasco, Don; Rubin, Yoram; Hou,Zhangshuan

    2006-04-04T23:59:59.000Z

    We develop a sampling-based Bayesian model to jointly invertseismic amplitude versus angles (AVA) and marine controlled-sourceelectromagnetic (CSEM) data for layered reservoir models. The porosityand fluid saturation in each layer of the reservoir, the seismic P- andS-wave velocity and density in the layers below and above the reservoir,and the electrical conductivity of the overburden are considered asrandom variables. Pre-stack seismic AVA data in a selected time windowand real and quadrature components of the recorded electrical field areconsidered as data. We use Markov chain Monte Carlo (MCMC) samplingmethods to obtain a large number of samples from the joint posteriordistribution function. Using those samples, we obtain not only estimatesof each unknown variable, but also its uncertainty information. Thedeveloped method is applied to both synthetic and field data to explorethe combined use of seismic AVA and EM data for gas saturationestimation. Results show that the developed method is effective for jointinversion, and the incorporation of CSEM data reduces uncertainty influid saturation estimation, when compared to results from inversion ofAVA data only.

  2. Stable isotopes of authigenic minerals in variably-saturated fractured tuff

    SciTech Connect (OSTI)

    Weber, D.S.; Evans, D.D.

    1988-11-01T23:59:59.000Z

    Identifying stable isotope variation and mineralogical changes in fractured rock may help establish the history of climatic and geomorphological processes that might affect the isolation properties of a waste repository site. This study examines the use of the stable isotope ratios of oxygen ({sup 18}O/{sup 16}O) and carbon ({sup 13}C/{sup 12}C) in authigenic minerals as hydrogeochemical tools tracing low-temperature rock-water interaction in variably-saturated fractured stuff. Isotopic compositions of fracture-filling and rock matrix minerals in the Apache Leap tuff, near Superior, Arizona were concordant with geothermal temperatures and in equilibrium with water isotopically similar to present-day meteoric water and groundwater. Oxygen and carbon isotope ratios of fracture-filling, in unsaturated fractured tuff, displayed an isotopic gradient believed to result from near-surface isotopic enrichment due to evaporation rather than the effects of rock-water interaction. Oxygen isotope ratios of rock matrix opal samples exhibited an isotopic gradient believed to result from, leaching and reprecipitation of silica at depth. Methods and results can be used to further define primary flowpaths and the movement of water in variably-saturated fractured rock. 71 refs., 23 figs., 3 tabs.

  3. Saturation of radiation-induced parametric instabilities by excitation of Langmuir turbulence

    SciTech Connect (OSTI)

    Dubois, D.F.; Rose, H.A. [Los Alamos National Lab., NM (United States); Russell, D. [Lodestar Research Inc., Boulder, CO (United States)

    1995-12-01T23:59:59.000Z

    Progress made in the last few years in the calculation of the saturation spectra of parametric instabilities which involve Langmuir daughter waves will be reviewed. These instabilities include the ion acoustic decay instability, the two plasmon decay instability (TPDI), and stimulated Raman scattering (SRS). In particular I will emphasize spectral signatures which can be directly compared with experiment. The calculations are based on reduced models of driven Laugmuir turbulence. Thomson scattering from hf-induced Langmuir turbulence in the unpreconditioned ionosphere has resulted in detailed agreement between theory and experiment at early times. Strong turbulence signatures dominate in this regime where the weak turbulence approximation fails completely. Recent experimental studies of the TPDI have measured the Fourier spectra of Langmuir waves as well as the angular and frequency, spectra of light emitted near 3/2 of the pump frequency again permitting some detailed comparisons with theory. The experiments on SRS are less detailed but by Thomson scattering the secondary decay of the daughter Langmuir wave has been observed. Scaling laws derived from a local model of SRS saturation are compared with full simulations and recent Nova experiments.

  4. Oximeter for reliable clinical determination of blood oxygen saturation in a fetus

    DOE Patents [OSTI]

    Robinson, Mark R. (Albuquerque, NM); Haaland, David M. (Albuquerque, NM); Ward, Kenneth J. (Madison, WI)

    1996-01-01T23:59:59.000Z

    With the crude instrumentation now in use to continuously monitor the status of the fetus at delivery, the obstetrician and labor room staff not only over-recognize the possibility of fetal distress with the resultant rise in operative deliveries, but at times do not identify fetal distress which may result in preventable fetal neurological harm. The invention, which addresses these two basic problems, comprises a method and apparatus for non-invasive determination of blood oxygen saturation in the fetus. The apparatus includes a multiple frequency light source which is coupled to an optical fiber. The output of the fiber is used to illuminate blood containing tissue of the fetus. In the preferred embodiment, the reflected light is transmitted back to the apparatus where the light intensities are simultaneously detected at multiple frequencies. The resulting spectrum is then analyzed for determination of oxygen saturation. The analysis method uses multivariate calibration techniques that compensate for nonlinear spectral response, model interfering spectral responses and detect outlier data with high sensitivity.

  5. A longitudinal study of emerging networks during natural disaster

    E-Print Network [OSTI]

    Abbasi, Alireza; Kapucu, Naim

    2015-01-01T23:59:59.000Z

    We present longitudinal analysis of the evolution of inter-organizational disaster coordination networks during natural disasters. We suggest that social networks are a useful paradigm for exploring this complex phenomenon from both theoretical and methodological perspective aiming to develop a quantitative assessment framework which could aid in developing a better understanding of the optimal functioning of these emerging inter-organizational networks during natural disasters. We highlight the importance of network metrics in order to investigate disaster response coordination networks. Results suggest that in disasters, rate of communication increases and creates the conditions where organizational structures need to move at that same pace to exchange new information.

  6. Method and apparatus for filtering gas with a moving granular filter bed

    DOE Patents [OSTI]

    Brown, Robert C. (Ames, IA); Wistrom, Corey (Ames, IA); Smeenk, Jerod L. (Ames, IA)

    2007-12-18T23:59:59.000Z

    A method and apparatus for filtering gas (58) with a moving granular filter bed (48) involves moving a mass of particulate filter material (48) downwardly through a filter compartment (35); tangentially introducing gas into the compartment (54) to move in a cyclonic path downwardly around the moving filter material (48); diverting the cyclonic path (58) to a vertical path (62) to cause the gas to directly interface with the particulate filter material (48); thence causing the gas to move upwardly through the filter material (48) through a screened partition (24, 32) into a static upper compartment (22) of a filter compartment for exodus (56) of the gas which has passed through the particulate filter material (48).

  7. Pena blanca natural analogue project: summary of activities

    SciTech Connect (OSTI)

    Levy, Schon S [Los Alamos National Laboratory; Goldstein, Steven J [Los Alamos National Laboratory; Abdel - Fattah, Amr I [Los Alamos National Laboratory

    2010-12-08T23:59:59.000Z

    The inactive Nopal I uranium mine in silicic tuff north of Chihuahua City, Chihuahua, Mexico, was studied as a natural analogue for an underground nuclear-waste repository in the unsaturated zone. Site stratigraphy was confirmed from new drill core. Datafrom site studies include chemical and isotopic compositions of saturated- and unsaturated-zone waters. A partial geochronology of uranium enrichment and mineralization was established. Evidence pertinent to uranium-series transport in the soil zone and changing redox conditions was collected. The investigations contributed to preliminary, scoping-level performance assessment modeling.

  8. Pena Blanca Natural Analogue Project: Summary of activities

    SciTech Connect (OSTI)

    Levy, S.; Goldstein, S.; Dobson, P.F.; Goodell, P.; Ku, T.-L.; Abdel-Fattah, A.; Saulnier, G.; Fayek, M.; de la Garza, R.

    2011-02-01T23:59:59.000Z

    The inactive Nopal I uranium mine in silicic tuff north of Chihuahua City, Chihuahua, Mexico, was studied as a natural analogue for an underground nuclear-waste repository in the unsaturated zone. Site stratigraphy was confirmed from new drill cores. Data from site studies include chemical and isotopic compositions of saturated- and unsaturated-zone waters. A partial geochronology of uranium enrichment and mineralization was established. Evidence pertinent to uranium-series transport in the soil zone and changing redox conditions was collected. The investigations contributed to preliminary, scoping-level performance assessment modeling.

  9. Natural gas annual 1996

    SciTech Connect (OSTI)

    NONE

    1997-09-01T23:59:59.000Z

    This document provides information on the supply and disposition of natural gas to a wide audience. The 1996 data are presented in a sequence that follows natural gas from it`s production to it`s end use.

  10. Nature/Culture/Seawater

    E-Print Network [OSTI]

    Helmreich, Stefan

    This essay considers seawater as a substance and symbol in anthropological and social theory. Seawater has occupied an ambiguous place with respect to anthropological categories of nature and culture. Seawater as nature ...

  11. Supervisory Natural Gas Analyst

    Broader source: Energy.gov [DOE]

    The Department of Energys Office of Fossil Energy, Office of Oil and Natural Gas, Office of Oil and Gas Global Security and Supply (FE) is responsible for regulating natural gas imports and exports...

  12. Gas production potential of disperse low-saturation hydrate accumulations in oceanic sediments

    E-Print Network [OSTI]

    Moridis, George J.; Sloan, E. Dendy

    2006-01-01T23:59:59.000Z

    to economically Page viable gas production. The overallare not promising targets for gas production. AcknowledgmentEnergy, Office of Natural Gas and Petroleum Technology,

  13. Natural gas annual 1995

    SciTech Connect (OSTI)

    NONE

    1996-11-01T23:59:59.000Z

    The Natural Gas Annual provides information on the supply and disposition of natural gas to a wide audience including industry, consumers, Federal and State agencies, and educational institutions. The 1995 data are presented in a sequence that follows natural gas (including supplemental supplies) from its production to its end use. This is followed by tables summarizing natural gas supply and disposition from 1991 to 1995 for each Census Division and each State. Annual historical data are shown at the national level.

  14. Natural Resources Research Institute

    E-Print Network [OSTI]

    Netoff, Theoden

    /Loll ThermoWood Hybrid Poplars Peat A boost for the peat industry Value in Minnesota peat deposits Natural che

  15. Natural gas annual 1994

    SciTech Connect (OSTI)

    NONE

    1995-11-17T23:59:59.000Z

    The Natural Gas Annual provides information on the supply and disposition of natural gas to a wide audience including industry, consumers, Federal and State agencies, and educational institutions. The 1994 data are presented in a sequence that follows natural gas (including supplemental supplies) from its production to its end use. This is followed by tables summarizing natural gas supply and disposition from 1990 to 1994 for each Census Division and each State. Annual historical data are shown at the national level.

  16. Sohio moves ahead on deep-water development

    SciTech Connect (OSTI)

    Not Available

    1985-05-01T23:59:59.000Z

    Sohio Petroleum Company is developing its oil and natural gas find on its East Breaks Block 165 lease in the Gulf of Mexico with a conventional bottom-founded steel structure installed in 860 feet of water. Water depths range from 500 to 1200 feet. The platform will be a single-piece steel structure equipped with two drilling rigs and accomodating 40 well slots. Initial production facilities on the structure are designed for up to 20,000 bopd and 50MMcfd of gas. Plans call for exploratory drilling from the structure to test additional fault segments. If successful, the size of the structure is sufficient to handle additional wells and added production capacity.

  17. EIA - Natural Gas Pipeline Network - Largest Natural Gas Pipeline...

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

    Interstate Pipelines Table About U.S. Natural Gas Pipelines - Transporting Natural Gas based on data through 20072008 with selected updates Thirty Largest U.S. Interstate Natural...

  18. The effect of undrained heating on a fluid-saturated hardened cement paste

    E-Print Network [OSTI]

    Ghabezloo, Siavash; Saint-Marc, Jrmie

    2008-01-01T23:59:59.000Z

    The effect of undrained heating on volume change and induced pore pressure increase is an important point to properly understand the behaviour and evaluate the integrity of an oil well cement sheath submitted to rapid temperature changes. This thermal pressurization of the pore fluid is due to the discrepancy between the thermal expansion coefficients of the pore fluid and of the solid matrix. The equations governing the undrained thermo-hydro-mechanical response of a porous material are presented and the effect of undrained heating is studied experimentally for a saturated hardened cement paste. The measured value of the thermal pressurization coefficient is equal to 0.6MPa/'C. The drained and undrained thermal expansion coefficients of the hardened cement paste are also measured in the heating tests. The anomalous thermal behaviour of cement pore fluid is back analysed from the results of the undrained heating test.

  19. The relation between seismic P- and S-wave velocity dispersion in saturated rocks

    SciTech Connect (OSTI)

    Mavko, G. [Stanford Univ., CA (United States). Dept. of Geophysics] [Stanford Univ., CA (United States). Dept. of Geophysics; Jizba, D. [CSTJF, Pau (France)] [CSTJF, Pau (France)

    1994-01-01T23:59:59.000Z

    Seismic velocity dispersion in fluid-saturated rocks appears to be dominated by two mechanisms: the large scale mechanism modeled by Biot, and the local flow or squirt mechanism. The two mechanisms can be distinguished by the ratio of P- to S-wave dispersions, or more conveniently, by the ratio of dynamic bulk to shear compliance dispersions derived from the wave velocities. The authors` formulation suggests that when local flow dominates, the dispersion of the shear compliance will be approximately 4/15 the dispersion of the compressibility. When the Biot mechanism dominates, the constant of proportionality is much smaller. Their examination of ultrasonic velocities from 40 sandstones and granites shows that most, but not all, of the samples were dominated by local flow dispersion, particularly at effective pressures below 40 MPa.

  20. Hydrogenation at low temperatures does not always lead to saturation: the case of HNCO

    E-Print Network [OSTI]

    Noble, J A; Congiu, E; Dulieu, F; Bonnin, M; Bassas, A; Duvernay, F; Danger, G; Chiavassa, T

    2015-01-01T23:59:59.000Z

    Context. It is generally agreed that hydrogenation reactions dominate chemistry on grain surfaces in cold, dense molecular cores, saturating the molecules present in ice mantles. Aims. We present a study of the low temperature reactivity of solid phase isocyanic acid (HNCO) with hydrogen atoms, with the aim of elucidating its reaction network. Methods. Fourier transform infrared spectroscopy and mass spectrometry were employed to follow the evolution of pure HNCO ice during bombardment with H atoms. Both multilayer and monolayer regimes were investigated. Results. The hydrogenation of HNCO does not produce detectable amounts of formamide (NH2CHO) as the major product. Experiments using deuterium reveal that deuteration of solid HNCO occurs rapidly, probably via cyclic reaction paths regenerating HNCO. Chemical desorption during these reaction cycles leads to loss of HNCO from the surface. Conclusions. It is unlikely that significant quantities of NH2CHO form from HNCO. In dense regions, however, deuteration o...

  1. Channeling Effect in Polycrystalline Deuterium-Saturated CVD Diamond Target Bombarded by Deuterium Ion Beam

    E-Print Network [OSTI]

    Bagulya, A V; Negodaev, M A; Rusetskii, A S; Chubenko, A P; Ralchenko, V G; Bolshakov, A P

    2014-01-01T23:59:59.000Z

    At the ion accelerator HELIS at the LPI, the neutron yield is investigated in DD reactions within a polycrystalline deuterium-saturated CVD diamond, during an irradiation of its surface by a deuterium ion beam with the energy less than 30 keV. The measurements of the neutron flux in the beam direction are performed in dependence on the target angle, \\b{eta}, with respect to the beam axis. These measurements are performed using a multichannel detector based on He3 counters. A significant anisotropy in neutron yield is observed, it was higher by a factor of 3 at \\b{eta}=0 compared to that at \\b{eta} = +-45{\\deg}. The possible reasons for the anisotropy, including ion channeling, are discussed.

  2. Channeling Effect in Polycrystalline Deuterium-Saturated CVD Diamond Target Bombarded by Deuterium Ion Beam

    E-Print Network [OSTI]

    A. V. Bagulya; O. D. Dalkarov; M. A. Negodaev; A. S. Rusetskii; A. P. Chubenko; V. G. Ralchenko; A. P. Bolshakov

    2014-09-08T23:59:59.000Z

    At the ion accelerator HELIS at the LPI, the neutron yield is investigated in DD reactions within a polycrystalline deuterium-saturated CVD diamond, during an irradiation of its surface by a deuterium ion beam with the energy less than 30 keV. The measurements of the neutron flux in the beam direction are performed in dependence on the target angle, \\b{eta}, with respect to the beam axis. These measurements are performed using a multichannel detector based on He3 counters. A significant anisotropy in neutron yield is observed, it was higher by a factor of 3 at \\b{eta}=0 compared to that at \\b{eta} = +-45{\\deg}. The possible reasons for the anisotropy, including ion channeling, are discussed.

  3. High resolution laser induced fluorescence Doppler velocimetry utilizing saturated absorption spectroscopy

    SciTech Connect (OSTI)

    Aramaki, Mitsutoshi [Department of Electrical Engineering and Computer Science, Nagoya University, Nagoya 464-8603 (Japan); Ogiwara, Kohei; Etoh, Shuzo [Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga 816-8580 (Japan); Yoshimura, Shinji [National Institute for Fusion Science, Toki 509-5292 (Japan); Tanaka, Masayoshi Y. [Department of Advanced Energy Engineering Science, Kyushu University, Kasuga 816-8580 (Japan)

    2009-05-15T23:59:59.000Z

    A high resolution laser induced fluorescence (LIF) system has been developed to measure the flow velocity field of neutral particles in an electron-cyclotron-resonance argon plasma. The flow velocity has been determined by the Doppler shift of the LIF spectrum, which is proportional to the velocity distribution function. Very high accuracy in velocity determination has been achieved by installing a saturated absorption spectroscopy unit into the LIF system, where the absolute value and scale of laser wavelength are determined by using the Lamb dip and the fringes of a Fabry-Perot interferometer. The minimum detectable flow velocity of a newly developed LIF system is {+-}2 m/s, and this performance remains unchanged in a long-time experiment. From the radial measurements of LIF spectra of argon metastable atoms, it is found that there exists an inward flow of neutral particles associated with neutral depletion.

  4. Phase transitions in Core-Collapse Supernova Matter at sub-saturation densities

    E-Print Network [OSTI]

    Helena Pais; William G. Newton; Jirina R. Stone

    2014-11-07T23:59:59.000Z

    We perform a three-dimensional, finite temperature Skyrme-Hartree-Fock study of inhomogeneous nuclear matter to determine the critical density and temperature for the phase transition between the pasta phase and homogeneous matter and its properties. We employ four different parametrizations of the Skyrme nuclear energy-density functional, SkM$^*$, SLy4, NRAPR and SQMC700, which span a range of saturation-density symmetry energy behaviours constrained by a variety of nuclear experimental probes. For each of these interactions we calculate free energy, pressure, entropy and chemical potentials in the range of particle number densities where the nuclear pasta phases are expected to exist, 0.02 - 0.12 fm$^{-3}$, temperatures 2 - 8 MeV and a proton fraction of 0.3. We find unambiguous evidence for a first-order phase transition to uniform matter, unsoftened by the presence of the pasta phases. No conclusive signs of first-order phase transition between the pasta phases is observed, and it is argued that the thermodynamic quantities vary continuously right up to the first-order phase transition to uniform matter. We compare our results with thermodynamic spinodals calculated using the same Skyrme parameterizations, finding that the effect of short-range Coulomb correlations and quantum shell effects included in our model leads to the pasta phases existing at densities up to 0.1 fm$^{-3}$ above the spinodal boundaries, thus increasing the transition density to uniform matter by the same amount. The transition density is otherwise shown to be insensitive to the symmetry energy at saturation density within the range constrained by the concordance of a variety of experimental constraints, and can be taken to be a well-determined quantity.

  5. Saturated hydraulic conductivity determined by on ground mono-offset Ground-Penetrating Radar inside a single ring infiltrometer

    E-Print Network [OSTI]

    Lger, Emmanuel; Coquet, Yves

    2013-01-01T23:59:59.000Z

    In this study we show how to use GPR data acquired along the infiltration of water inside a single ring infiltrometer to inverse the saturated hydraulic conductivity. We used Hydrus-1D to simulate the water infiltration. We generated water content profiles at each time step of infiltration, based on a particular value of the saturated hydraulic conductivity, knowing the other van Genuchten parameters. Water content profiles were converted to dielectric permittivity profiles using the Complex Refractive Index Method relation. We then used the GprMax suite of programs to generate radargrams and to follow the wetting front using arrival time of electromagnetic waves recorded by a Ground-Penetrating Radar (GPR). Theoretically, the 1D time convolution between reflectivity and GPR signal at any infiltration time step is related to the peak of the reflected amplitude recorded in the corresponding trace in the radargram. We used this relation ship to invert the saturated hydraulic conductivity for constant and fallin...

  6. Seaway conversion moves Oklahoma gas to Texas plant

    SciTech Connect (OSTI)

    Bazin, G.L. II; Ince, R.L.

    1986-03-03T23:59:59.000Z

    Purchase and conversion to natural gas transmission of the Seaway crude oil pipeline was an effort to capitalize on the line's location to gather raw gas in Oklahoma and Texas for use as fuel at Phillips Petroleum Co.'s Sweeny, Tex., refinery. The Seaway pipeline was planned during the early 1970s as a major midwest oil artery. The purpose of the 30-in., 500-mile pipeline, extending from Jones Creek, Tex., to Cushing, Okla., was to feed inland midcontinent refineries with lower-cost imported oil. Owned by a consortium of seven companies, the pipeline began operation in mid-1976 and continued almost uninterrupted until 1982, at which time excess U.S. refining capacity, coupled with reduced oil imports, resulted in the closing of several large inland refineries. These refinery closings, along with reduced crude oil import demands, caused the Seaway pipeline to become inactive for several long periods of time. Since the forecast use of the pipeline was not favorable, the pipeline and its terminals were put up for sale.

  7. Factors Affecting the Relationship between Crude Oil and Natural Gas Prices (released in AEO2010)

    Reports and Publications (EIA)

    2010-01-01T23:59:59.000Z

    Over the 1995-2005 period, crude oil prices and U.S. natural gas prices tended to move together, which supported the conclusion that the markets for the two commodities were connected. Figure 26 illustrates the fairly stable ratio over that period between the price of low-sulfur light crude oil at Cushing, Oklahoma, and the price of natural gas at the Henry Hub on an energy-equivalent basis.

  8. Frequency-dependent processing and interpretation (FDPI) of seismic data for identifying, imaging and monitoring fluid-saturated underground reservoirs

    DOE Patents [OSTI]

    Goloshubin, Gennady M. (Sugar Land, TX); Korneev, Valeri A. (Lafayette, CA)

    2005-09-06T23:59:59.000Z

    A method for identifying, imaging and monitoring dry or fluid-saturated underground reservoirs using seismic waves reflected from target porous or fractured layers is set forth. Seismic imaging the porous or fractured layer occurs by low pass filtering of the windowed reflections from the target porous or fractured layers leaving frequencies below low-most corner (or full width at half maximum) of a recorded frequency spectra. Additionally, the ratio of image amplitudes is shown to be approximately proportional to reservoir permeability, viscosity of fluid, and the fluid saturation of the porous or fractured layers.

  9. Frequency-dependent processing and interpretation (FDPI) of seismic data for identifying, imaging and monitoring fluid-saturated underground reservoirs

    DOE Patents [OSTI]

    Goloshubin, Gennady M.; Korneev, Valeri A.

    2006-11-14T23:59:59.000Z

    A method for identifying, imaging and monitoring dry or fluid-saturated underground reservoirs using seismic waves reflected from target porous or fractured layers is set forth. Seismic imaging the porous or fractured layer occurs by low pass filtering of the windowed reflections from the target porous or fractured layers leaving frequencies below low-most corner (or full width at half maximum) of a recorded frequency spectra. Additionally, the ratio of image amplitudes is shown to be approximately proportional to reservoir permeability, viscosity of fluid, and the fluid saturation of the porous or fractured layers.

  10. EIA - Natural Gas Pipeline Network - Natural Gas Supply Basins...

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

    Corridors About U.S. Natural Gas Pipelines - Transporting Natural Gas based on data through 20072008 with selected updates U.S. Natural Gas Supply Basins Relative to Major Natural...

  11. The environment of a geomaterial (soil, rock, concrete) determines its susceptibility to failure: grain size distribution and mineralogy, fluid-saturation, pore fluid chemistry, current state of stress, history, the

    E-Print Network [OSTI]

    Borja, Ronaldo I.

    to failure: grain size distribution and mineralogy, fluid-saturation, pore fluid chemistry, current state

  12. Curriculum Integration Case Studies 1 Moving Beyond Marketing Study Abroad: Comparative Case Studies of the

    E-Print Network [OSTI]

    Amin, S. Massoud

    Curriculum Integration Case Studies 1 Moving Beyond Marketing Study Abroad: Comparative Case Integration Case Studies 2 Contents Acknowledgements....................................................................16 5.) Case Study #1 (University of Minnesota, 2006): Oregon State University 1a.) Impetus & Goals

  13. Idaho Workers Eager to Check Condition of Waste Moved to Cargo...

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

    pits and trenches. They moved the drums into 209 cargo containers and stored them above ground. The site hoped the experiment would shed light on the risks associated with waste...

  14. A TRANSIENT EDDY CURRENT PROBLEM ON A MOVING DOMAIN. MATHEMATICAL ANALYSIS

    E-Print Network [OSTI]

    Rodríguez, Rodolfo

    A TRANSIENT EDDY CURRENT PROBLEM ON A MOVING DOMAIN. MATHEMATICAL ANALYSIS ALFREDO BERM is to introduce and analyze a weak formulation of the transient eddy current problem governing electromagnetic. Electromagnetic forming, transient eddy current problem, axisymmetric problem, degenerate parabolic problem

  15. Contamination Cross-contamination occurs when bacteria, or "germs," are moved from one food to another.

    E-Print Network [OSTI]

    Combat Cross Contamination Cross-contamination occurs when bacteria, or "germs," are moved from one food to another. To combat cross-contamination, keep foods SEPARATE!! At the grocery store, keep raw

  16. Electrons Move Like Light in Three-Dimensional Solid | U.S. DOE...

    Office of Science (SC) Website

    Electrons Move Like Light in Three-Dimensional Solid Tracking electronic motion in a graphene-like bulk material shows fast electrons in all dimensions. Print Text Size: A A A...

  17. Domestic production of medical isotope Mo-99 moves a step closer

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

    Domestic production of medical isotope Mo-99 Domestic production of medical isotope Mo-99 moves a step closer Irradiated uranium fuel has been recycled and reused for molybdenum-99...

  18. How do robots compute and move? Dr. Ross Snider, Electrical and Computer Engineering

    E-Print Network [OSTI]

    Dyer, Bill

    How do robots compute and move? Dr. Ross Snider, Electrical and Computer Engineering Silly Jokes What do you call a robot driving in a car? What do you call a robot who likes books? What do you call

  19. Watch their Moves: Applying Probabilistic Multiple Object Tracking to Autonomous Robot Soccer

    E-Print Network [OSTI]

    Cremers, Daniel

    Thorsten Schmitt, Michael Beetz, Robert Hanek, and Sebastian Buck Munich University of Technology soccer must know where their opponents are in order to make the right moves and plays (Beetz et al. 2002

  20. Answering Questions about Moving Objects in Videos Boris Katz, Jimmy Lin, Chris Stauffer, and Eric Grimson

    E-Print Network [OSTI]

    Stauffer, Christopher

    Chapter 12 Answering Questions about Moving Objects in Videos Boris Katz, Jimmy Lin, Chris Stauffer in The final version of this book chapter appears as: Boris Katz, Jimmy Lin, Chris Stauffer and Eric Grimson

  1. Elliott Sites on the Move.pdf | OSTI, US Dept of Energy, Office...

    Office of Scientific and Technical Information (OSTI)

    Elliott Sites on the Move.pdf Document Description STI Submission via the AN 241.1 Web Service STI Submission via the AN 241.1 Web Service Document Info Available Downloads for...

  2. An evaluation of the Massachusetts Department of Housing and Community Development's Moving to Work voucher program

    E-Print Network [OSTI]

    Mahdavi, Pedram

    2009-01-01T23:59:59.000Z

    Since implementation nearly 10 years ago there has been limited research into the outcomes of the Massachusetts Department of Housing and Community Development's Moving to Work rental subsidy program. The Congressionally ...

  3. X-shooter Science Verification Proposal A special co-moving white dwarfmain sequence pair

    E-Print Network [OSTI]

    Liske, Jochen

    and HD 122750 form a co-moving proper motion pair (PM in mas/yr: RA, Dec, from UCAC-2): WD 1401-147 (-170: The white dwarf (WD) WD 1401-147 and the main sequence (MS) star HD 122750 form a co-moving proper motion laboratory to study the complex physics of pulsating WDs in a quantitative manner. Scientific Case: WD 1401-147

  4. Aerodynamic effects in ink-jet printing on a moving web

    E-Print Network [OSTI]

    Hsiao, W.-K.; Hoath, S.D.; Martin, G.D.; Hutchings, I.M.

    2012-01-01T23:59:59.000Z

    applications such as single-pass graph- ical printing or even mass-production of printed electronics, there is a common trend towards greatly increased printing throughput achieved by printing on a continuously moving web substrate. To achieve this, both... at substrate speeds up to 2 m/s. However, as they could not obtain reliable PIV measure- ments within 600 m of the moving substrate, there is still uncer- tainty in the validity of this conclusion. Additionally, their simula- tion predicted...

  5. Warner College of Natural Resources Warner College of Natural

    E-Print Network [OSTI]

    Collett Jr., Jeffrey L.

    , and scientific investigation of renewable and nonrenewable natural resources. Programs include the study of everyWarner College of Natural Resources Warner College of Natural Resources Office in Natural Resources, and Conservation Biology Forestry Geology Natural Resource Recreation and Tourism Natural Resources Management

  6. Natural gas annual 1997

    SciTech Connect (OSTI)

    NONE

    1998-10-01T23:59:59.000Z

    The Natural Gas Annual provides information on the supply and disposition of natural gas to a wide audience including industry, consumers, Federal and State agencies, and educational institutions. The 1997 data are presented in a sequence that follows natural gas (including supplemental supplies) from its production to its end use. This is followed by tables summarizing natural gas supply and disposition from 1993 to 1997 for each Census Division and each State. Annual historical data are shown at the national level. 27 figs., 109 tabs.

  7. Liquefied Natural Gas (Iowa)

    Broader source: Energy.gov [DOE]

    This document adopts the standards promulgated by the National Fire Protection Association as rules for the transportation, storage, handling, and use of liquefied natural gas. The NFPA standards...

  8. Natural Heritage Program (Missouri)

    Broader source: Energy.gov [DOE]

    Natural Heritage Reviews are conducted by the Missouri Department of Conservation on request in order to assess proposed project sites and adjacent lands. Reviews determine whether potential...

  9. Natural gas dehydration apparatus

    DOE Patents [OSTI]

    Wijmans, Johannes G; Ng, Alvin; Mairal, Anurag P

    2006-11-07T23:59:59.000Z

    A process and corresponding apparatus for dehydrating gas, especially natural gas. The process includes an absorption step and a membrane pervaporation step to regenerate the liquid sorbent.

  10. Modelling Counter-Current Two-Phase Flow of Saturated Superfluid Helium in Quasi-Horizontal Tubes: Application to the LHC Cryogenic System

    E-Print Network [OSTI]

    Guinaudeau, H

    1996-01-01T23:59:59.000Z

    Modelling Counter-Current Two-Phase Flow of Saturated Superfluid Helium in Quasi-Horizontal Tubes: Application to the LHC Cryogenic System

  11. H O W T O M O R R O W M O V E S HOW TOMORROW MOVES

    E-Print Network [OSTI]

    Illinois at Urbana-Champaign, University of

    is a van-Genuchten parameter, and it is defined as: m=1-1/n. 3) Swr: residual water saturation 4) Srn Thickness Scaled to Water Pressure 20 Select Well Locations Used Elevations Grid Generated with Surfer: residual LNAPL saturation 5) KLNAPL: LNAPL hydraulic conductivity Notes: #12;API EQUATIONS APPLIED

  12. Variably Saturated Flow and Multicomponent Biogeochemical Reactive Transport Modeling of a Uranium Bioremediation Field Experiment

    SciTech Connect (OSTI)

    Yabusaki, Steven B.; Fang, Yilin; Williams, Kenneth H.; Murray, Christopher J.; Ward, Anderson L.; Dayvault, Richard; Waichler, Scott R.; Newcomer, Darrell R.; Spane, Frank A.; Long, Philip E.

    2011-11-01T23:59:59.000Z

    Field experiments at a former uranium mill tailings site have identified the potential for stimulating indigenous bacteria to catalyze the conversion of aqueous uranium in the +6 oxidation state to immobile solid-associated uranium in the +4 oxidation state. This effectively removes uranium from solution resulting in groundwater concentrations below actionable standards. Three-dimensional, coupled variably-saturated flow and biogeochemical reactive transport modeling of a 2008 in situ uranium bioremediation field experiment is used to better understand the interplay of transport rates and biogeochemical reaction rates that determine the location and magnitude of key reaction products. A comprehensive reaction network, developed largely through previous 1-D modeling studies, was used to simulate the impacts on uranium behavior of pulsed acetate amendment, seasonal water table variation, spatially-variable physical (hydraulic conductivity, porosity) and geochemical (reactive surface area) material properties. A principal challenge is the mechanistic representation of biologically-mediated terminal electron acceptor process (TEAP) reactions whose products significantly alter geochemical controls on uranium mobility through increases in pH, alkalinity, exchangeable cations, and highly reactive reduction products. In general, these simulations of the 2008 Big Rusty acetate biostimulation field experiment in Rifle, Colorado confirmed previously identified behaviors including (1) initial dominance by iron reducing bacteria that concomitantly reduce aqueous U(VI), (2) sulfate reducing bacteria that become dominant after {approx}30 days and outcompete iron reducers for the acetate electron donor, (3) continuing iron-reducer activity and U(VI) bioreduction during dominantly sulfate reducing conditions, and (4) lower apparent U(VI) removal from groundwater during dominantly sulfate reducing conditions. New knowledge on simultaneously active metal and sulfate reducers has been incorporated into the modeling. In this case, an initially small population of slow growing sulfate reducers is active from the initiation of biostimulation. Three-dimensional, variably saturated flow modeling was used to address impacts of a falling water table during acetate injection. These impacts included a significant reduction in aquifer saturated thickness and isolation of residual reactants and products, as well as unmitigated uranium, in the newly unsaturated vadose zone. High permeability sandy gravel structures resulted in locally high flow rates in the vicinity of injection wells that increased acetate dilution. In downgradient locations, these structures created preferential flow paths for acetate delivery that enhanced local zones of TEAP reactivity and subsidiary reactions. Conversely, smaller transport rates associated with the lower permeability lithofacies (e.g., fine) and vadose zone were shown to limit acetate access and reaction. Once accessed by acetate, however, these same zones limited subsequent acetate dilution and provided longer residence times that resulted in higher concentrations of TEAP products when terminal electron donors and acceptors were not limiting. Finally, facies-based porosity and reactive surface area variations were shown to affect aqueous uranium concentration distributions; however, the ranges were sufficiently small to preserve general trends. Large computer memory and high computational performance were required to simulate the detailed coupled process models for multiple biogeochemical components in highly resolved heterogeneous materials for the 110-day field experiment and 50 days of post-biostimulation behavior. In this case, a highly-scalable subsurface simulator operating on 128 processor cores for 12 hours was used to simulate each realization. An equivalent simulation without parallel processing would have taken 60 days, assuming sufficient memory was available.

  13. Development of a thermoacoustic natural gas liquefier.

    SciTech Connect (OSTI)

    Wollan, J. J. (John J.); Swift, G. W. (Gregory W.); Backhaus, S. N. (Scott N.); Gardner, D. L. (David L.)

    2002-01-01T23:59:59.000Z

    Praxair, in conjunction with the Los Alamos National Laboratory, is developing a new technology, thermoacoustic heat engines and refrigerators, for liquefaction of natural gas. This is the only technology capable of producing refrigeration power at cryogenic temperatures with no moving parts. A prototype, with a projected natural gas liquefaction capacity of 500 gallons/day, has been built and tested. The power source is a natural gas burner. Systems will be developed with liquefaction capacities up to 10,000 to 20,000 gallons per day. The technology, the development project, accomplishments and applications are discussed. In February 2001 Praxair, Inc. purchased the acoustic heat engine and refrigeration development program from Chart Industries. Chart (formerly Cryenco, which Chart purchased in 1997) and Los Alamos had been working on the technology development program since 1994. The purchase included assets and intellectual property rights for thermoacoustically driven orifice pulse tube refrigerators (TADOPTR), a new and revolutionary Thermoacoustic Stirling Heat Engine (TASHE) technology, aspects of Orifice Pulse Tube Refrigeration (OPTR) and linear motor compressors as OPTR drivers. Praxair, in cooperation with Los Alamos National Laboratory (LANL), the licensor of the TADOPTR and TASHE patents, is continuing the development of TASHE-OPTR natural gas powered, natural gas liquefiers. The liquefaction of natural gas, which occurs at -161 C (-259 F) at atmospheric pressure, has previously required rather sophisticated refrigeration machinery. The 1990 TADOPTR invention by Drs. Greg Swift (LANL) and Ray Radebaugh (NIST) demonstrated the first technology to produce cryogenic refrigeration with no moving parts. Thermoacoustic engines and refrigerators use acoustic phenomena to produce refrigeration from heat. The basic driver and refrigerator consist of nothing more than helium-filled heat exchangers and pipes, made of common materials, without exacting tolerances. The liquefier development program is divided into two components: Thermoacoustically driven refrigerators and linear motor driven refrigerators (LOPTRs). LOPTR technology will, for the foreseeable future, be limited to natural gas liquefaction capacities on the order of hundreds of gallons per day. TASHE-OPTR technology is expected to achieve liquefaction capacities of tens of thousands of gallons per day. This paper will focus on the TASHE-OPTR technology because its natural gas liquefaction capacity has greater market opportunity. LOPTR development will be mentioned briefly. The thermoacoustically driven refrigerator development program is now in the process of demonstrating the technology at a capacity of about 500 gallon/day (gpd) i.e., approximately 42,000 standard cubic feet/day, which requires about 7 kW of refrigeration power. This capacity is big enough to illuminate the issues of large-scale acoustic liquefaction at reasonable cost and to demonstrate the liquefaction of about 70% of an input gas stream, while burning about 30%. Subsequent to this demonstration a system with a capacity of approximately 10{sup 6} standard cubic feet/day (scfd) = 10,000 gpd with a projected liquefaction rate of about 85% of the input gas stream will be developed. When commercialized, the TASHE-OPTRs will be a totally new type of heat-driven cryogenic refrigerator, with projected low manufacturing cost, high reliability, long life, and low maintenance. A TASHE-OPTR will be able to liquefy a broad range of gases, one of the most important being natural gas (NG). Potential NG applications range from distributed liquefaction of pipeline gas as fuel for heavy-duty fleet and long haul vehicles to large-scale liquefaction at on-shore and offshore gas wellheads. An alternative to the thermoacoustic driver, but with many similar technical and market advantages, is the linear motor compressor. Linear motors convert electrical power directly into oscillating linear, or axial, motion. Attachment of a piston to the oscillator results in a direct drive compressor. Such a compressor

  14. Amorphous Silicon Thin-Film Transistors with DC Saturation Current Half-Life of More than 100 Years

    E-Print Network [OSTI]

    as the time for the TFT drain current to fall by 50% under DC voltage bias in saturation, the half with either back-channel etched (BCE) or back-channel passivated (BCP) structures (Fig. 1). The BCP structure passivates the back-side of the TFT channel "in situ" at the cost of an extra mask step. The gate nitride

  15. 374 IEEE TRANSACTIONS ON INDUSTRIALELECTRONICS, VOL. 42, NO. 4, AUGUST 1995 Torque Capability and Control of a Saturated

    E-Print Network [OSTI]

    Paderborn, Universitt

    ). Maximum mechanical power. Saturated mutual inductance. Leakage inductances of stator and rotor winding. Resistances of stator and rotor winding. Number of pole pairs. Manuscript received March 23, 1994; revised by experiments. ZSdlim, iSqlim VSdlim, VSqlim $Rnom, $Rapt NOMENCLATURE Components of stator current vector

  16. IN SEARCH OF A PHYSIOLOGICAL BASIS FOR COVARIATIONS IN LIGHT-LIMITED AND LIGHT-SATURATED PHOTOSYNTHESIS1

    E-Print Network [OSTI]

    Babin, Marcel

    -SATURATED PHOTOSYNTHESIS1 Michael J. Behrenfeld2 National Aeronautics and Space Administration, Goddard Space Flight Center, Department of Oceanography, Halifax, Nova Scotia B3 H 4J1, Canada The photosynthesis-irradiance (PE) of photosynthesis. Variability in PE curves can be separated into two categories: that associated with changes

  17. Particle-in-cell investigation of the nonlinear saturation of Shear Alfven Modes in hollow-q-profile tokamaks

    E-Print Network [OSTI]

    Vlad, Gregorio

    Particle-in-cell investigation of the nonlinear saturation of Shear Alfven Modes in hollow-q-profile characterized by non-monotonic q profiles is a relevant issue in the investigation of auxiliary-heated as well as ignited-plasma properties because of the role that such q profiles could play in obtaining improved

  18. Blood Gas, Oxygen Saturation, pH, and Lactate Values in Elasmobranch Blood Measured with a Commercially Available

    E-Print Network [OSTI]

    Miami, University of

    Blood Gas, Oxygen Saturation, pH, and Lactate Values in Elasmobranch Blood Measured Research Laboratory, New England Aquarium, Central Wharf, Boston, Massachusetts 02110, USA Abstract.--Blood often be most valuable when blood samples are analyzed immediately after collection. Portable clinical

  19. A New SiGe Base Lateral PNM Schottky Collector Bipolar Transistor on SOI for Non-Saturating

    E-Print Network [OSTI]

    Kumar, M. Jagadesh

    A New SiGe Base Lateral PNM Schottky Collector Bipolar Transistor on SOI for Non-Saturating VLSI Logic Design Abstract- A novel bipolar transistor structure, namely, SiGe base lateral PNM Schottky is presented. Based on our simulation results, we demonstrate for the first time that the proposed SiGe base

  20. Natural Intrinsic Geometrical Symmetries

    E-Print Network [OSTI]

    Haesen, Stefan; 10.3842/SIGMA.2009.086

    2009-01-01T23:59:59.000Z

    A proposal is made for what could well be the most natural symmetrical Riemannian spaces which are homogeneous but not isotropic, i.e. of what could well be the most natural class of symmetrical spaces beyond the spaces of constant Riemannian curvature, that is, beyond the spaces which are homogeneous and isotropic, or, still, the spaces which satisfy the axiom of free mobility.

  1. R-modes in Neutron Stars with Crusts: Turbulent Saturation, Spin-down, and Crust Melting

    E-Print Network [OSTI]

    Yanqin Wu; Christopher D. Matzner; Phil Arras

    2000-06-09T23:59:59.000Z

    Rossby waves (r-modes) have been suggested as a means to regulate the spin periods of young or accreting neutron stars, and also to produce observable gravitational wave radiation. R-modes involve primarily transverse, incompressive motions of the star's fluid core. However, neutron stars gain crusts early in their lives: therefore, r-modes also imply shear in the fluid beneath the crust. We examine the criterion for this shear layer to become turbulent, and derive the rate of dissipation in the turbulent regime. Unlike dissipation from a viscous boundary layer, turbulent energy loss is nonlinear in mode energy and can therefore cause the mode to saturate at amplitudes typically much less than unity. This energy loss also reappears as heat below the crust. We study the possibility of crust melting as well as its implications for the spin evolution of low-mass X-ray binaries. Lastly, we identify some universal features of the spin evolution that may have observational consequences.

  2. Theoretical and experimental investigation of thermohydrologic processes in a partially saturated, fractured porous medium

    SciTech Connect (OSTI)

    Green, R.T.; Manteufel, R.D. [Nuclear Regulatory Commission, Washington, DC (United States). Div. of Regulatory Applications; Dodge, F.T.; Svedeman, S.J. [Southwest Research Inst., San Antonio, TX (United States). Center for Nuclear Waste Regulatory Analyses

    1993-07-01T23:59:59.000Z

    The performance of a geologic repository for high-level nuclear waste will be influenced to a large degree by thermohydrologic phenomena created by the emplacement of heat-generating radioactive waste. The importance of these phenomena is manifest in that they can greatly affect the movement of moisture and the resulting transport of radionuclides from the repository. Thus, these phenomena must be well understood prior to a definitive assessment of a potential repository site. An investigation has been undertaken along three separate avenues of analysis: (i) laboratory experiments, (ii) mathematical models, and (iii) similitude analysis. A summary of accomplishments to date is as follows. (1) A review of the literature on the theory of heat and mass transfer in partially saturated porous medium. (2) A development of the governing conservation and constitutive equations. (3) A development of a dimensionless form of the governing equations. (4) A numerical study of the importance and sensitivity of flow to a set of dimensionless groups. (5) A survey and evaluation of experimental measurement techniques. (6) Execution of laboratory experiments of nonisothermal flow in a porous medium with a simulated fracture.

  3. Reaction of glass during gamma irradiation in a saturated tuff environment. Part 1. SRL 165 glass

    SciTech Connect (OSTI)

    Bates, J.K.; Fischer, D.F.; Gerding, T.J.

    1986-02-01T23:59:59.000Z

    The influence of gamma irradiation on the reaction of actinide-doped borosilicate glass (SRL 165) in a saturated tuff environment has been studied in a series of tests lasting up to 56 days. The following conclusions were reached. The reaction of, and subsequent actinide release from, the glass depends on the dynamic interaction between radiolysis effects, which cause the solution pH to become more acidic; glass reaction, which drives the pH more basic; and test component interactions that may extract glass components from solution. The use of large gamma irradiation dose rates to accelerate reactions that may occur in an actual repository radiation field may affect this dynamic balance by unduly influencing the mechanism of the glass-water reaction. Comparisons between the present results and data obtained by reacting similar glasses using MCC-1 and NNWSI rock cup procedures indicate that the irradiation conditions used in the present experiments do not dramatically influence the reaction rate of the glass. 8 figs., 9 tabs.

  4. Dissolution characteristics of mixed UO{sub 2} powders in J-13 water under saturated conditions

    SciTech Connect (OSTI)

    Veleckis, E.; Hoh, J.C.

    1991-03-01T23:59:59.000Z

    The Yucca Mountain Project/Spent Fuel program at Argonne National Laboratory is designed to determine radionuclide release rates by exposing high-level waste to repository-relevant groundwater. To gain experience for the tests with spent fuel, a scoping experiment was conducted at room temperature to determine the uranium release rate from an unirradiated UO{sub 2} powder mixture (14.3 wt % enrichment in {sup 235}U) to J-13 water under saturated conditions. Another goal set for the experiment was to develop a method for utilizing isotope dilution techniques to determine whether the dissolution rate of UO{sub 2} matrix is in accordance with an existing kinetic model. Results of these analyses revealed unequal uranium dissolution rates from the enriched and depleted portions of the powder mixture because of undisclosed differences between them. Although the presence of this inhomogeneity has precluded the application of the kinetic model, it also provided an opportunity to elaborate on the utilization of isotope dilution data in recognizing and quantifying such conditions. Detailed listings of uranium release and solution chemistry data are presented. Other problems commonly associated with spent fuel, such as the effectiveness of filtering media, the existence of uranium concentration peaks during early stages of the leach tests, the need for concentration corrections due to water replenishments of sample volumes, and experience derived from isotope dilution data are discussed in the context of the present results. 10 refs., 5 figs., 7 tabs.

  5. High temperature measurement using very high shutter speed to avoid image saturation

    SciTech Connect (OSTI)

    Ma, Zhen; Zhang, Yang [Department of Mechanical Engineering, Sir Frederick Mappin Building, University of Sheffield, Sheffield, S1 3JD (United Kingdom)

    2014-04-11T23:59:59.000Z

    This paper explores the adaptation of the two-colour principle to develop a high-speed colour temperature correlation system, which is able to cover a range of temperature that is challenging to achieve before. A colour digital camera has built in RGB filters. It is possible to measure the temperature from the ratio of intensity of the green and red pixels using the two-colour principle based on the expansion of the Planks radiation law. In this study, experiments were carried out using a temperature calibrated tungsten ribbon lamp which can be tuned to vary from 1300 to 2200C. Using very high shutter speed and small aperture, the high-speed camera successfully captured the tungsten ribbon without image saturation at the full temperature scale. Tests have been carried out at different temperature and camera settings. The sensitivity and errors have been analysed, and experiment results demonstrate the potential of using very high shutter speed is available for measuring the temperature even beyond 2200C.

  6. Gas production potential of disperse low-saturation hydrateaccumulations in oceanic sediments

    SciTech Connect (OSTI)

    Moridis, George J.; Sloan, E. Dendy

    2006-07-19T23:59:59.000Z

    In this paper we evaluate the gas production potential ofdisperse, low-saturation (SH<0.1) hydrate accumulations in oceanicsediments. Such hydrate-bearing sediments constitute a significantportion of the global hydrate inventory. Using numerical simulation, weestimate (a) the rates of gas production and gas release from hydratedissociation, (b) the corresponding cumulative volumes of released andproduced gas, as well as (c) the water production rate and the mass ofproduced water from disperse, low-SH hydrate-bearing sediments subject todepressurization-induced dissociation over a 10-year production period.We investigate the sensitivity of items (a) to (c) to the followinghydraulic properties, reservoir conditions, and operational parameters:intrinsic permeability, porosity, pressure, temperature, hydratesaturation, and constant pressure at which the production well is kept.The results of this study indicate that, despite wide variations in theaforementioned parameters (covering the entire spectrum of suchdeposits), gas production is very limited, never exceeding a few thousandcubic meters of gas during the 10-year production period. Such lowproduction volumes are orders of magnitude below commonly acceptedstandards of economic viability, and are further burdened with veryunfavorable gas-to-water ratios. The unequivocal conclusion from thisstudy is that disperse, low-SH hydrate accumulations in oceanic sedimentsare not promising targets for gas production by means ofdepressurization-induced dissociation, and resources for early hydrateexploitation should be focused elsewhere.

  7. Statistical investigation of the saturation effect in the ionospheric foF2 versus sunspot, solar radio noise, and solar EUV radiation

    E-Print Network [OSTI]

    Chen, Yuh-Ing

    radio noise, and solar EUV radiation J. Y. Liu Institute of Space Science and Center for Space are important for the saturation features. INDEX TERMS: 2479 Ionosphere: Solar radiation and cosmic ray effects: Solar radiation and cosmic ray effects; KEYWORDS: saturation effect, ionospheric foF2, sunspot number

  8. 24th European Photovoltaic Solar Energy Conference, Hamburg, Germany, Sept. 2009 DETERMINATION OF THE EMITTER SATURATION CURRENT DENSITY OF SILICON SOLAR CELLS

    E-Print Network [OSTI]

    circuit and short circuit conditions yields the saturation current density J0. We ob- tain the saturation luminescence emission under open circuit and short circuit conditions. It was shown in Ref. 2 that the ratio the proposed approach. We proove experimentally that the PL ratio of the open cir- cuit and short circuit

  9. Moving granular-bed filter development program topical report. Base contract test plan

    SciTech Connect (OSTI)

    Newby, R.A.; Dilmore, W.J.; Fellers, A.W.; Gasparovic, A.C.; Kittle, W.F.; Lippert, T.E.; Smeltzer, E.E.; Yang, W.C.

    1991-10-17T23:59:59.000Z

    The Westinghouse Science & Technology Center has proposed a novel moving granular-bed filter concept, the Standleg Moving Granular-Bed Filter (S-MGBF) system, that overcomes the inherent deficiencies of the current state-of-the-art moving granular-bed filter technology. The S-MGBF system combines two unique features that make it highly effective for use in advanced coal-fueled power plants. First, the S-MGBF system applies pelletization technology to generate filter pellets from the power plant solid waste materials, and uses these pellets as a ``once-through`` filtering media to eliminate the need for costly, complex, and large filter media recycling equipment. This pelletizing step also generates a more environmentally acceptable solid waste product and provides the potential to incorporate gas-phase contaminant sorbents into the filtering media. Secondly, the S-MGBF system passes these pellets and the flyash laden power plant gas through a highly compact S-MGBF that uses cocurrent gas-pellet contacting in an arrangement that greatly simplifies and enhances the distribution of dirty gas to the moving bed and the disengagement of clean gas from the moving bed.

  10. 47 Natural Gas Market Trends NATURAL GAS MARKET TRENDS

    E-Print Network [OSTI]

    47 Natural Gas Market Trends Chapter 5 NATURAL GAS MARKET TRENDS INTRODUCTION Natural gas discusses current natural gas market conditions in California and the rest of North America, followed on the outlook for demand, supply, and price of natural gas for the forecasted 20-year horizon. It also addresses

  11. Nature Macmillan Publishers Ltd 1997 letters to nature

    E-Print Network [OSTI]

    Asher, Sanford A.

    To test these predictions we used drops of distilled water which contained charge-stabilized surfactant-free polystyrene micro- spheres (Interfacial Dynamics, Portland, OR) at a starting volume fraction of 10 values10 for the water diffusivity in air and for the saturated vapour concentration. In a separate

  12. Advanced Liquid Natural Gas Onboard Storage System

    SciTech Connect (OSTI)

    Greg Harper; Charles Powars

    2003-10-31T23:59:59.000Z

    Cummins Westport Incorporated (CWI) has designed and developed a liquefied natural gas (LNG) vehicle fuel system that includes a reciprocating pump with the cold end submerged in LNG contained in a vacuum-jacketed tank. This system was tested and analyzed under the U.S. Department of Energy (DOE) Advanced LNG Onboard Storage System (ALOSS) program. The pumped LNG fuel system developed by CWI and tested under the ALOSS program is a high-pressure system designed for application on Class 8 trucks powered by CWI's ISX G engine, which employs high-pressure direct injection (HPDI) technology. A general ALOSS program objective was to demonstrate the feasibility and advantages of a pumped LNG fuel system relative to on-vehicle fuel systems that require the LNG to be ''conditioned'' to saturation pressures that exceeds the engine fuel pressure requirements. These advantages include the capability to store more fuel mass in given-size vehicle and station tanks, and simpler lower-cost LNG refueling stations that do not require conditioning equipment. Pumped LNG vehicle fuel systems are an alternative to conditioned LNG systems for spark-ignition natural gas and port-injection dual-fuel engines (which typically require about 100 psi), and they are required for HPDI engines (which require over 3,000 psi). The ALOSS program demonstrated the feasibility of a pumped LNG vehicle fuel system and the advantages of this design relative to systems that require conditioning the LNG to a saturation pressure exceeding the engine fuel pressure requirement. LNG tanks mounted on test carts and the CWI engineering truck were repeatedly filled with LNG saturated at 20 to 30 psig. More fuel mass was stored in the vehicle tanks as well as the station tank, and no conditioning equipment was required at the fueling station. The ALOSS program also demonstrated the general viability and specific performance of the CWI pumped LNG fuel system design. The system tested as part of this program is designed to be used on Class 8 trucks with CWI ISX G HPDI engines. Extensive test cart and engineering truck tests of the pump demonstrated good durability and the high-pressure performance needed for HPDI application. The LNG tanks manufactured by Taylor-Wharton passed SAE J2343 Recommended Practice drop tests and accelerated road-load vibration tests. NER and hold-time tests produced highly consistent results. Additional tests confirmed the design adequacy of the liquid level sensor, vaporizer, ullage volume, and other fuel system components. While the testing work performed under this program focused on a high-pressure pumped LNG fuel system design, the results also validate the feasibility of a low-pressure pumped fuel system. A low-pressure pumped fuel system could incorporate various design refinements including a simpler and lighter-weight pump, which would decrease costs somewhat relative to a high-pressure system.

  13. Tenneco upgrades natural gasoline

    SciTech Connect (OSTI)

    O'Gorman, E.K.

    1986-08-01T23:59:59.000Z

    Tenneco Oil Co. recently completed a natural gasoline upgrading project at its LaPorte, Tex., facility. The project was started in October 1985. The purpose was to fractionate natural gasoline and isomerize the n-pentane component. Three factors made this a particularly attractive project for the LaPorte complex: 1. The phase down of lead in gasoline made further processing of natural gasoline desirable. 2. Idle equipment and trained personnel were available at the plant as a result of a switch of Tenneco's natural gas liquids (NGL) fractionation to its Mont Belvieu, Tex., facility. 3. The plant interconnects with Houston's local markets. It has pipelines to Mont Belvieu, Texas City, and plants along the Houston Ship Channel, as well as truck, tank car, and barge-loading facilities. Here are the details on the operation of the facilities, the changes which were required to enable the plant to operate successfully, and how this conversion was completed in a timely fashion.

  14. Natural gas monthly

    SciTech Connect (OSTI)

    NONE

    1996-05-01T23:59:59.000Z

    This document highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Data presented include volume and price, production, consumption, underground storage, and interstate pipeline activities.

  15. NATURAL MARINE HYDROCARBON SEEPAGE

    E-Print Network [OSTI]

    Luyendyk, Bruce

    affects ocean chemistry (Dando and Hovland, 1992) and provides a natural source of petroleum pollution the water column above submarine vents, plumes of hydrocarbon gas bubbles act as acoustic scattering targets

  16. Natural Resource Specialist

    Broader source: Energy.gov [DOE]

    A successful candidate in this position will serve as a Natural Resource Specialist responsible for participating in the development and implementation of short-term and long-term regional (multi...

  17. Natural Gas Regulations (Kentucky)

    Broader source: Energy.gov [DOE]

    Kentucky Administrative Regulation title 805 promulgates the rules and regulations pertaining to natural gas production in Kentucky. In addition to KAR title 405, chapter 30, which pertains to any...

  18. Future of Natural Gas

    Office of Environmental Management (EM)

    of Natural Gas Bill Eisele, CEM SC Electric & Gas Co Hosted by: FEDERAL UTILITY PARTNERSHIP WORKING GROUP SEMINAR November 5-6, 2014 Cape Canaveral. Florida Agenda * Gas Facts *...

  19. Photoacoustic infrared spectroscopy for conducting gas tracer tests and measuring water saturations in landfills

    SciTech Connect (OSTI)

    Jung, Yoojin; Han, Byunghyun; Mostafid, M. Erfan; Chiu, Pei [Department of Civil and Environmental Engineering, University of Delaware, Newark, DE 19716 (United States); Yazdani, Ramin [Yolo County Planning and Public Works Department, Division of Integrated Waste Management, Yolo County, 44090 County Rd. 28H, Woodland, CA 95776 (United States); Imhoff, Paul T., E-mail: imhoff@udel.edu [Department of Civil and Environmental Engineering, University of Delaware, Newark, DE 19716 (United States)

    2012-02-15T23:59:59.000Z

    Highlights: Black-Right-Pointing-Pointer Photoacoustic infrared spectroscopy tested for measuring tracer gas in landfills. Black-Right-Pointing-Pointer Measurement errors for tracer gases were 1-3% in landfill gas. Black-Right-Pointing-Pointer Background signals from landfill gas result in elevated limits of detection. Black-Right-Pointing-Pointer Technique is much less expensive and easier to use than GC. - Abstract: Gas tracer tests can be used to determine gas flow patterns within landfills, quantify volatile contaminant residence time, and measure water within refuse. While gas chromatography (GC) has been traditionally used to analyze gas tracers in refuse, photoacoustic spectroscopy (PAS) might allow real-time measurements with reduced personnel costs and greater mobility and ease of use. Laboratory and field experiments were conducted to evaluate the efficacy of PAS for conducting gas tracer tests in landfills. Two tracer gases, difluoromethane (DFM) and sulfur hexafluoride (SF{sub 6}), were measured with a commercial PAS instrument. Relative measurement errors were invariant with tracer concentration but influenced by background gas: errors were 1-3% in landfill gas but 4-5% in air. Two partitioning gas tracer tests were conducted in an aerobic landfill, and limits of detection (LODs) were 3-4 times larger for DFM with PAS versus GC due to temporal changes in background signals. While higher LODs can be compensated by injecting larger tracer mass, changes in background signals increased the uncertainty in measured water saturations by up to 25% over comparable GC methods. PAS has distinct advantages over GC with respect to personnel costs and ease of use, although for field applications GC analyses of select samples are recommended to quantify instrument interferences.

  20. Modeling of thermally driven hydrological processes in partially saturated fractured rock

    SciTech Connect (OSTI)

    Tsang, Yvonne; Birkholzer, Jens; Mukhopadhyay, Sumit

    2009-03-15T23:59:59.000Z

    This paper is a review of the research that led to an in-depth understanding of flow and transport processes under strong heat stimulation in fractured, porous rock. It first describes the anticipated multiple processes that come into play in a partially saturated, fractured porous volcanic tuff geological formation, when it is subject to a heat source such as that originating from the decay of radionuclides. The rationale is then given for numerical modeling being a key element in the study of multiple processes that are coupled. The paper outlines how the conceptualization and the numerical modeling of the problem evolved, progressing from the simplified to the more realistic. Examples of numerical models are presented so as to illustrate the advancement and maturation of the research over the last two decades. The most recent model applied to in situ field thermal tests is characterized by (1) incorporation of a full set of thermal-hydrological processes into a numerical simulator, (2) realistic representation of the field test geometry, in three dimensions, and (3) use of site-specific characterization data for model inputs. Model predictions were carried out prior to initiation of data collection, and the model results were compared to diverse sets of measurements. The approach of close integration between modeling and field measurements has yielded a better understanding of how coupled thermal hydrological processes produce redistribution of moisture within the rock, which affects local permeability values and subsequently the flow of liquid and gases. The fluid flow in turn will change the temperature field. We end with a note on future research opportunities, specifically those incorporating chemical, mechanical, and microbiological factors into the study of thermal and hydrological processes.

  1. Effect of debonded interfaces on corrosion of mild steel composites in supercritical CO2-saturated brines

    SciTech Connect (OSTI)

    John, Han [Los Alamos National Laboratory; Carey, James W [Los Alamos National Laboratory; Zhang, Jinsuo [Los Alamos National Laboratory

    2010-10-07T23:59:59.000Z

    The geologic sequestration of CO{sub 2} is a proposed method to limit greenhouse gas emissions and has been the subject of many studies in the last decade. Wellbore systems achieve isolation of the storage reservoir through a combination of steel (generally carbon steel) and Portland cement. CO{sub 2} leakage along the steel-cement interface has the potential to accelerate corrosion. We conduct experiments to assess the corrosion risk at cement-steel interface under in situ wellbore conditions. Wellbore interfaces were simulated by assemblies constructed of J55 mild steel and Portland class G (Epoxy was used in this study to separate) cement and corrosion was investigated in supercritical CO{sub 2} saturated brines, (NaCl = 1 wt%) at T = 50 C, pCO{sub 2} = 1200 psi with interface gap size = 100 {micro}m and {infinity} (open surface). The experiments were carried out in a high-pressure, 1.8 L autoclave. The corrosion kinetics were measured employing electrochemical techniques including linear polarization resistance and electrochemical impedance spectroscopy techniques. The corrosion scales were analyzed using secondary electron microscopy, back scattering electron microscopy, energy dispersive spectroscopy and x-ray diffraction. Corrosion rates decreased as time with or without interface gap. In this case corrosion rates are controlled by scale protectivity through the interface gap. Scaled steel corrosion rates were two orders of magnitude less compared with fresh steel. The corrosion scale is pseudo crystalline at the open interface. Well-crystallized scale was observed at interface gap sizes 100 {micro}m. All corrosion scales were composed of iron carbonates.

  2. Transport of fluorescently labeled hydroxyapatite nanoparticles in saturated granular media at environmentally relevant concentrations of surfactants

    SciTech Connect (OSTI)

    Wang, Dengjun; Su, Chuming; Liu, Chongxuan; Zhou, Dongmei

    2014-05-01T23:59:59.000Z

    Hydroxyapatite nanoparticle (nHAP) is being used to remediate soils and aquifers contaminated with metals and radionuclides; however, the mobility of nHAP is still poorly understood in subsurface granular environments. In this study, transport and retention kinetics of alizarin red S (ARS)-labeled nHAP were investigated in water-saturated quartz sand at low concentrations of surfactants: sodium dodecyl benzene sulfonate (SDBS, an anionic surfactant, 050 mg L1) and cetyltrimethylammonium bromide (CTAB, a cationic surfactant, 05 mg L1). Both surfactants were found to have a marked effect on the electrokinetic properties of ARS-nHAP and, consequently, on their transport and retention behaviors. Transport of nanoparticles (NPs) increased significantly with increasing SDBS concentration, largely because of enhanced colloidal stability and reduced aggregate size arising from enhanced electrostatic, osmotic, and elastic-steric repulsions between ARS-nHAP and sand grains. Conversely, transport decreased significantly in the presence of increasing CTAB concentrations due to reduced surface charge and consequential enhanced aggregation of the NPs. Osmotic and elastic-steric repulsions played only a minor role in enhancing the colloidal stability of ARS-nHAP in the presence of CTAB. Retention profiles of ARS-nHAP exhibited hyperexponential-shapes (decreasing rates of retention with increasing distance) for all conditions tested, and became more pronounced as CTAB concentration increased. The phenomenon was attributed to the aggregation and ripening of ARS-nHAP in the presence of surfactants, particularly CTAB. Overall, the present study suggests that surfactants at environmentally relevant concentrations may be an important consideration in employing nHAP for engineered in-situ remediation of certain metals and radionuclides in contaminated soils and aquifers.

  3. Nonlinear instability of an Oldroyd elasticoviscous magnetic nanofluid saturated in a porous medium

    SciTech Connect (OSTI)

    Moatimid, Galal M., E-mail: gal-moa@hotmail.com [Department of Mathematics, Faculty of Education, Ain Shams University, Roxy (Egypt); Alali, Elham M. M., E-mail: dr-elham-alali@hotmail.com; Ali, Hoda S. M., E-mail: hoda-ali-1@hotmail.com [Department of Mathematics, Faculty of Science (Girls Branch), University of Tabuk, Tabuk, P.O. Box 741 (Saudi Arabia)

    2014-09-15T23:59:59.000Z

    Through viscoelastic potential theory, a Kelvin-Helmholtz instability of two semi-infinite fluid layers, of Oldroydian viscoelastic magnetic nanofluids (MNF), is investigated. The system is saturated by porous medium through two semi-infinite fluid layers. The Oldroyd B model is utilized to describe the rheological behavior of viscoelastic MNF. The system is influenced by uniform oblique magnetic field that acts at the surface of separation. The model is used for the MNF incorporated the effects of uniform basic streaming and viscoelasticity. Therefore, a mathematical simplification must be considered. A linear stability analysis, based upon the normal modes analysis, is utilized to find out the solutions of the equations of motion. The onset criterion of stability is derived; analytically and graphs have been plotted by giving numerical values to the various parameters. These graphs depict the stability characteristics. Regions of stability and instability are identified and discussed in some depth. Some previous studies are recovered upon appropriate data choices. The stability criterion in case of ignoring the relaxation stress times is also derived. To relax the mathematical manipulation of the nonlinear approach, the linearity of the equations of motion is taken into account in correspondence with the nonlinear boundary conditions. Taylor's theory is adopted to expand the governing nonlinear characteristic equation according to of the multiple time scales technique. This analysis leads to the well-known GinzburgLandau equation, which governs the stability criteria. The stability criteria are achieved theoretically. To simplify the mathematical manipulation, a special case is considered to achieve the numerical estimations. The influence of orientation of the magnetic fields on the stability configuration, in linear as well as nonlinear approaches, makes a dual role for the magnetic field strength in the stability graphs. Stability diagram is plotted for different sets of physical parameters. A new stability as well as instability region, in the parameter space, appears due to the nonlinear effects.

  4. Viscoroute 2.0: a tool for the simulation of moving load effects on asphalt pavement

    E-Print Network [OSTI]

    Chabot, Armelle; Deloffre, Lydie; Duhamel, Denis

    2010-01-01T23:59:59.000Z

    As shown by strains measured on full scale experimental aircraft structures, traffic of slow-moving multiple loads leads to asymmetric transverse strains that can be higher than longitudinal strains at the bottom of asphalt pavement layers. To analyze this effect, a model and a software called ViscoRoute have been developed. In these tools, the structure is represented by a multilayered half-space, the thermo-viscoelastic behaviour of asphalt layers is accounted by the Huet-Sayegh rheological law and loads are assumed to move at constant speed. First, the paper presents a comparison of results obtained with ViscoRoute to results stemming from the specialized literature. For thick asphalt pavement and several configurations of moving loads, other ViscoRoute simulations confirm that it is necessary to incorporate viscoelastic effects in the modelling to well predict the pavement behaviour and to anticipate possible damages in the structure.

  5. System and method for 100% moisture and basis weight measurement of moving paper

    DOE Patents [OSTI]

    Hernandez, Jose E. (Livermore, CA); Koo, Jackson C. (San Ramon, CA)

    2002-01-01T23:59:59.000Z

    A system for characterizing a set of properties for a moving substance are disclosed. The system includes: a first near-infrared linear array; a second near-infrared linear array; a first filter transparent to a first absorption wavelength emitted by the moving substance and juxtaposed between the substance and the first array; a second filter blocking the first absorption wavelength emitted by the moving substance and juxtaposed between the substance and the second array; and a computational device for characterizing data from the arrays into information on a property of the substance. The method includes the steps of: filtering out a first absorption wavelength emitted by a substance; monitoring the first absorption wavelength with a first near-infrared linear array; blocking the first wavelength from reaching a second near-infrared linear array; and characterizing data from the arrays into information on a property of the substance.

  6. How do sound waves in a Bose-Einstein condensate move so fast?

    E-Print Network [OSTI]

    P. M. Stevenson

    2003-08-29T23:59:59.000Z

    Low-momentum excitations of a dilute Bose-Einstein condensate behave as phonons and move at a finite velocity v_s. Yet the atoms making up the phonon excitation each move very slowly; v_a = p/m --> 0. A simple "cartoon picture" is suggested to understand this phenomenon intuitively. It implies a relation v_s/v_a = N_ex, where N_ex is the number of excited atoms making up the phonon. This relation does indeed follow from the standard Bogoliubov theory.

  7. Precise energy eigenvalues of hydrogen-like ion moving in quantum plasmas

    E-Print Network [OSTI]

    Dutta, S; Mukherjee, T K

    2014-01-01T23:59:59.000Z

    The analytic form of the electrostatic potential felt by a slowly moving test charge in quantum plasma is being derived. It has been shown that the potential composed of two parts: Debye-Huckel screening term and near-field wake potential which depends on the velocity of the test charge and the number density of the plasma electrons. Rayleigh-Ritz variational calculation has been done to estimate precise energy eigenvalues of hydrogen-like ion under such plasma environment. A detailed analysis shows that the energy levels are gradually moves to the continuum with increasing plasma electron density while level crossing phenomenon have been observed with the variation of ion velocity.

  8. The influence of free gas saturation on water flood performance - variations caused by changes in flooding rate

    E-Print Network [OSTI]

    Dandona, Anil Kumar

    1971-01-01T23:59:59.000Z

    through 19. These 4. 0 FIGURE I ATER -OIL CAPILLARY PRESSURE CURVE W CA 0 I IJJ IK Pn 2. 0 CA UJ lL CL K o IO 0 . 20 . 40 . 60 . 80 I. O WATER SATURATION - FRACTION OF PORE VOLUME IO 0 . 20 . 40 . 60 . 80 I. O GAS SATURATION - FRACTION... injection of 0. 25 pore volumes of water. Except for the very low rates, all gas present in the system is trapped. At high water 0 u H 0 0 0 4J g 0 I-I I-1 M 0 z 0 0 Ql QJ 0 3 0 4J cd Q 'O QJ Q Ql 4J cd Q cc V Id 0 0 4J 0 cd O ca Ql...

  9. Ultrabright multikilovolt x-ray source: saturated amplification on noble gas transition arrays from hollow atom states

    DOE Patents [OSTI]

    Rhodes, Charles K.; Boyer, Keith

    2004-02-17T23:59:59.000Z

    An apparatus and method for the generation of ultrabright multikilovolt x-rays from saturated amplification on noble gas transition arrays from hollow atom states is described. Conditions for x-ray amplification in this spectral region combine the production of cold, high-Z matter, with the direct, selective multiphoton excitation of hollow atoms from clusters using ultraviolet radiation and a nonlinear mode of confined, self-channeled propagation in plasmas. Data obtained is consistent with the presence of saturated amplification on several transition arrays of the hollow atom Xe(L) spectrum (.lambda..about.2.9 .ANG.). An estimate of the peak brightness achieved is .about.10.sup.29 .gamma..multidot.s.sup.-1.multidot.mm.sup.-2.multidot.mr.sup.-2 (0.1% Bandwidth).sup.-1, that is .about.10.sup.5 -fold higher than presently available synchotron technology.

  10. Analysis and design of a saturable reactor assisted soft-switching full-bridge dc-dc converter

    SciTech Connect (OSTI)

    Hamada, Satoshi (Sansha Electric Manufacturing Co., Ltd., Osaka (Japan)); Nakaoka, Mutsuo (Kobe Univ. (Japan). Dept. of Electrical and Electronics Engineering)

    1994-05-01T23:59:59.000Z

    Analysis and design considerations for a saturable reactor assisted soft-switching full-bridge dc-dc converter are presented. The converter has advantages such as low switching losses with no substantial increase in conduction losses, wide load range, and constant frequency operation. To show how to utilize the analysis results, a 350-W, 500-kHz converter is chosen as a design example. The results are verified experimentally on a prototype converter.

  11. Frank Masci (1)MIPS D/L Review (S5), February 28, 2001 24m SUR-mode Saturation Flagging

    E-Print Network [OSTI]

    Masci, Frank

    Frank Masci (1)MIPS D/L Review (S5), February 28, 2001 24m SUR-mode Saturation Flagging: SATMASK Frank Masci February 28, 2001 #12;Frank Masci (2)MIPS D/L Review (S5), February 28, 2001 What SATMASK are flagged in a bit-mask image (D-mask). #12;Frank Masci (3)MIPS D/L Review (S5), February 28, 2001

  12. Very high resolution saturation spectroscopy of lutetium isotopes via c-w single-frequency laser resonance ionization mass spectrometry

    SciTech Connect (OSTI)

    Fearey, B.L.; Parent, D.C.; Keller, R.A.; Miller, C.M.

    1987-01-01T23:59:59.000Z

    In this paper, we discuss the use of Resonance Ionization Mass Spectrometry (RIMS) to perform isotopically selective saturation spectroscopy of lutetium isotopes. Utilizing this technique, it is shown that accurate measurements of the relative frequencies of hyperfine (HF) components for different isotopes easily can be made without the need for an isotopically enriched sample. The precision with which the HF splitting constants can be determined is estimated to be approx.5 times greater than in previous work.

  13. 254 IEEE JOURNAL OF QUANTUM ELECTRONICS, VOL. 31, NO. 2. FEBRUARY 1995 Saturation Intensity and Time Response of

    E-Print Network [OSTI]

    Rocca, Jorge J.

    and Time Response of InGaAs-InGaP MQW Optical Modulators M. E. Watson, J. L. A. Chilla, J. J. Rocca, J saturation and time response measurements on InCaAs-InGaP MQW modulators. The mea- surements yield-i-n modulators based on strained layers of InGaAs-InGaP grown on GaAs have also been demonstrated [lo]. The InGaAs-InGaP

  14. Welcome FUPWG- Natural Gas Overview

    Broader source: Energy.gov [DOE]

    Presentationgiven at the Federal Utility Partnership Working Group (FUPWG) Fall 2008 meetingprovides an overview of natural gas, including emissions, compressed natural gas (CNG) vehicles, and landfill gas supplement for natural gas system.

  15. Determination of structural characteristics of saturates from diesel and kerosene fuels by carbon-13 nuclear magnetic resonance spectrometry

    SciTech Connect (OSTI)

    Cookson, D.J.; Smith, B.E.

    1985-04-01T23:59:59.000Z

    Two saturated hydrocarbon fractions, one mainly consisting of n-alkanes and the other containing only branched plus cyclic saturates, have been separated from each of a variety of diesel fuels (approximate boiling range 230-320/sup 0/C) and kerosene fuels (approximately 190-230/sup 0/C) using silica chromatography and urea clathration. The n-alkane fractions have been simply characterized by using conventional /sup 13/C NMR spectrometry, yielding average carbon chain lengths. The branched plus cyclic saturates fractions have been characterized by using the gated spin echo (GASPE) /sup 13/C NMR subspectra for each CH/sub n/ group type (n = 0 to 3) and allows the fractional abundances of CH/sub n/ groups to be measured. These data have been employed in devising and calculating a number of novel average structure parameters which report on the extent of branching and occurrence of ring structures in the fractions investigated. Spectral data are also used to identify some specific submolecular structures. 29 references, 7 figures, 4 tables.

  16. Use of an elliptical aperture to control saturation in closely-coupled, cold iron, superconducting dipole magnets

    SciTech Connect (OSTI)

    Morgan, G.

    1985-01-01T23:59:59.000Z

    The high fields permitted by superconducting windings result in saturation of closely-coupled iron in dipole and quadrupole beam transport magnets. Coupland suggested using a triangular cutout at the poles to reduce the change in the sextupole (b/sub 2/) term due to saturation. The use of an elliptical aperture in a close-coupled dipole for the Relativistic Heavy Ion Collider (RHIC) has been studied using the BNL computer program MDP (a version of GFUN). The ellipse aspect ratio was varied while holding the horizontal (minor) radius constant. The proper aspect ratio gives no shift in b/sub 2/ sue to saturation, and a reduction in the b/sub 4/ shift. A modification of the ellipse also reduces b/sub 4/. The elliptical aperture introduces a large b/sub 2/ term at low field which must be compensated for by the coil design. A practical coil design which does this for the RHIC magnet is presented. 5 refs., 2 figs., 3 tabs.

  17. Moving Energy

    SciTech Connect (OSTI)

    Rameau, Jon; Crabtree, George; Greene, Laura; Kwok, Wai; Johnson, Peter; Tsvelik, Alexei [Artist

    2013-07-18T23:59:59.000Z

    Representing the Center for Emergent Superconductivity (CES), this document is one of the entries in the Ten Hundred and One Word Challenge. As part of the challenge, the 46 Energy Frontier Research Centers were invited to represent their science in images, cartoons, photos, words and original paintings, but any descriptions or words could only use the 1000 most commonly used words in the English language, with the addition of one word important to each of the EFRCs and the mission of DOE: energy. The mission of the CES is to discover new high-temperature superconductors and improve the performance of known superconductors by understanding the fundamental physics of superconductivity.

  18. Natural Gas | Department of Energy

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

    Fossil Natural Gas Natural Gas September 15, 2014 NETL Releases Hydraulic Fracturing Study The National Energy Technology Laboratory has released a technical report on the...

  19. Historical Natural Gas Annual 1999

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

    1999 The Historical Natural Gas Annual contains historical information on supply and disposition of natural gas at the national, regional, and State level as well as prices at...

  20. Moving towards agility in a bureaucratic environment RUP as a bridge between Waterfall and Agile processes

    E-Print Network [OSTI]

    Sillito, Jonathan

    support for agility. 2. Company Background We conducted a case study in a large Oil & Gas government processes can be difficult especially for organizations lacking top- level management support. To explore on the move from waterfall to Scrum, supported and promoted in a top-down fashion, from leaders to initially

  1. UA researchers develop develop a device for moving industrial vehicles without drivers

    E-Print Network [OSTI]

    Escolano, Francisco

    in settings with extreme human conditions (cold storage, waste management , etc....) The device is availableUA researchers develop develop a device for moving industrial vehicles without drivers Researchers Localization And Mapping). This technology is applicable to any business or industrial environment where

  2. A programming framework for a group of multiple mobile robots moving in a real world.

    E-Print Network [OSTI]

    Ohya, Akihisa

    of mobile robot Performing Layer Coordinating Layer Application Program Hardware Figure 2: A layered system manager Performing layer Coordinating layer Application A Robot Robots Figure 3: Software modulesA programming framework for a group of multiple mobile robots moving in a real world. Tomoaki

  3. Control of Airborne Wind Energy Systems Based on Nonlinear Model Predictive Control & Moving Horizon Estimation

    E-Print Network [OSTI]

    Control of Airborne Wind Energy Systems Based on Nonlinear Model Predictive Control & Moving arising in the Airborne Wind Energy paradigm, an essential one is the control of the tethered airfoil], [3], the Airborne Wind Energy (AWE) paradigm shift proposes to get rid of the structural elements

  4. See Chair's Message, page 5 moved to the few halls with

    E-Print Network [OSTI]

    Gilchrist, James F.

    See Chair's Message, page 5 moved to the few halls with power (e.g. Brodhead), whereas many others Whitaker Laboratory 5 E. Packer Ave. Bethlehem, PA 18015 www.lehigh.edu/ ~inmatsci Chair's MessageChair's MessageChair's MessageChair's Message #12;P A G E 2 Mat Camp extends outside Valley The MSE department

  5. Ignition and Combustion of Fuel Pockets Moving in an Oxidizing Atmosphere

    E-Print Network [OSTI]

    Heil, Matthias

    Ignition and Combustion of Fuel Pockets Moving in an Oxidizing Atmosphere JOEL DAOU Dpto, Spain. E-mail: daou@tupi.dmt.upm.es Ignition and combustion of an initially spherical pocket of fuel, the results provide a good appreciation of the dynamics of the combustion process. For example, it is found

  6. innovati nNREL Furthers U.S. Marine Corps Air Station Miramar's Move Toward Net

    E-Print Network [OSTI]

    innovati nNREL Furthers U.S. Marine Corps Air Station Miramar's Move Toward Net Zero Energy The U.S. Marine Corps Air Station (MCAS) Miramar is striving toward its goal of becoming a"net zero energy"to which the net zero goal would apply. The NZEI concept focuses on the use of local clean energy resources

  7. Calculation of eddy currents in moving structures by a sliding mesh-nite element method

    E-Print Network [OSTI]

    Buffa, Annalisa

    Calculation of eddy currents in moving structures by a sliding mesh- nite element method A. Bu of eddy currents in non-stationary structures. Both 2D and 3D models are considered. The approximation. An implicit Euler scheme is used to discretize in time. Key words { eddy currents, nite element approxima

  8. Abstract--As computation and storage continues to move from desktops to large internet services, computing

    E-Print Network [OSTI]

    Tomkins, Andrew

    Abstract--As computation and storage continues to move from desktops to large internet services, computing platforms running such services are transforming into warehouse-scale computers. 100 Gigabit takes advantage of a fiber rich environment to drive very large bandwidth within and between clusters

  9. Theoretical Population Biology 67 (2005) 3345 A quasispecies on a moving oasis

    E-Print Network [OSTI]

    Desai, Michael

    2005-01-01T23:59:59.000Z

    Theoretical Population Biology 67 (2005) 3345 A quasispecies on a moving oasis Michael M. Desai patch (``oasis'') in the middle of a large ``desert.'' At one genetic locus, individuals may have one of a few gene sequences that convey an advantage while in the oasis at the cost of a disadvantage

  10. Green Move: a platform for highly configurable, heterogeneous electric vehicle sharing

    E-Print Network [OSTI]

    Cugola, Gianpaolo

    Green Move: a platform for highly configurable, heterogeneous electric vehicle sharing Andrea G the spreading of electric vehicles, in particular for what concerns the high upfront costs of the vehicles benefits. I. INTRODUCTION Electric vehicle sharing has the potential to provide a solution to many

  11. Indexing the Trajectories of Moving Objects in Networks Victor Teixeira de Almeida

    E-Print Network [OSTI]

    Güting, Ralf Hartmut

    of the routes. We propose the index in terms of the basic algorithms for insertion and querying. We test our the roads of Germany. In our tests, the MON-Tree showes good scalability when increasing the number operations to support querying. Complete trajectories of the moving objects are stored This work

  12. SBAS and GBAS Integrity for Non-Aviation Users: Moving Away from "Specific Risk"

    E-Print Network [OSTI]

    Stanford University

    as well as ships near shore. This much larger user base can benefit as much from the integrity componentsSBAS and GBAS Integrity for Non-Aviation Users: Moving Away from "Specific Risk" Sam Pullen, Todd available to other users, such as automobiles, buses, and trains on land as well as ships near shore

  13. Method and apparatus for ultrasonic characterization through the thickness direction of a moving web

    DOE Patents [OSTI]

    Jackson, Theodore (Atlanta, GA); Hall, Maclin S. (Marietta, GA)

    2001-01-01T23:59:59.000Z

    A method and apparatus for determining the caliper and/or the ultrasonic transit time through the thickness direction of a moving web of material using ultrasonic pulses generated by a rotatable wheel ultrasound apparatus. The apparatus includes a first liquid-filled tire and either a second liquid-filled tire forming a nip or a rotatable cylinder that supports a thin moving web of material such as a moving web of paper and forms a nip with the first liquid-filled tire. The components of ultrasonic transit time through the tires and fluid held within the tires may be resolved and separately employed to determine the separate contributions of the two tire thicknesses and the two fluid paths to the total path length that lies between two ultrasonic transducer surfaces contained within the tires in support of caliper measurements. The present invention provides the benefit of obtaining a transit time and caliper measurement at any point in time as a specimen passes through the nip of rotating tires and eliminates inaccuracies arising from nonuniform tire circumferential thickness by accurately retaining point-to-point specimen transit time and caliper variation information, rather than an average obtained through one or more tire rotations. Morever, ultrasonic transit time through the thickness direction of a moving web may be determined independent of small variations in the wheel axle spacing, tire thickness, and liquid and tire temperatures.

  14. A spatiotemporal auto-regressive moving average model for solar radiation

    E-Print Network [OSTI]

    Stone, J. V.

    A spatiotemporal auto-regressive moving average model for solar radiation C.A. Glasbey and D 1). Solar radiation, averaged over ten minute intervals, was recorded at each site for two years otherwise there are too many parameters to be estimated. As we wish to simulate solar radiation on a network

  15. UBC Social Ecological Economic Development Studies (SEEDS) Student Report Moving UBC Food Outlets Beyond Climate Neutral

    E-Print Network [OSTI]

    UBC Social Ecological Economic Development Studies (SEEDS) Student Report Moving UBC Food Outlets ..................................................................................................................................... 27 Abstract With the increase in global energy use there has been a subsequent increase in greenhouse of qualitative interviews with key stakeholders. Key findings include the low supply of local food, the need

  16. CityBizList US Green Building Council -MD Celebrating Move to

    E-Print Network [OSTI]

    CityBizList US Green Building Council - MD Celebrating Move to Hunt Valley Share Email this Article Baltimore County Executive Jim Smith will join the U.S. Green Building Council Maryland to celebrate Horst, Senior Vice President, U.S. Green Building Council. Horst has served as chair of USGBC's LEED

  17. EXPERIMENTAL EVALUATION OF SIMULTANEOUS 3D LOCALIZATION OF SENSOR NODES AND TRACKING MOVING TARGETS

    E-Print Network [OSTI]

    Instituto de Sistemas e Robotica

    EXPERIMENTAL EVALUATION OF SIMULTANEOUS 3D LOCALIZATION OF SENSOR NODES AND TRACKING MOVING TARGETS sensor/target localization) which rely on infrared (IR), radio frequency/received signal strength (RF of a simultaneous localization and track- ing (SLAT) algorithm for sensor networks, whose aim is to determine

  18. On the Feasibility of a Moving Support for Surgery on the Beating Heart

    E-Print Network [OSTI]

    Salcudean, Tim

    On the Feasibility of a Moving Support for Surgery on the Beating Heart A.L. Trejos1, S Burrard Vancouver BC, V6Z 1Y6 Abstract. In this paper the use of a heart-tracking hand support is pro- posed to allow coronary artery bypass grafting surgery to take place on the beating heart. This method

  19. From Peachtree to Microsoft Dynamics GP: A move that makes sense for growing businesses

    E-Print Network [OSTI]

    Narasayya, Vivek

    account statement across your companies. Need a consolidated financial statement with all your holdings business, and your Peachtree solution has given you the tools you've needed for accounting and basic with change. Moving to a new business management system might seem overwhelming, given all the challenges you

  20. Robust Multi-Person Tracking from Moving Platforms Andreas Ess1

    E-Print Network [OSTI]

    Schindler, Konrad

    Robust Multi-Person Tracking from Moving Platforms Andreas Ess1 , Konrad Schindler1 , Bastian Leibe://drops.dagstuhl.de/opus/volltexte/2008/1617 #12;2 A. Ess, K. Schindler, B. Leibe, L. van Gool the proposed integration is the concept

  1. Intelligent Escort Robot Moving together with Human Methods for Human Position Recognition

    E-Print Network [OSTI]

    Ohya, Akihisa

    : Light-emitting device used in the experiments. robot is able to know the distance to the human thanksIntelligent Escort Robot Moving together with Human Methods for Human Position Recognition in everyday life by interacting with humans. In order to escort a human, the robot needs to know the position

  2. Doppler Effect Associated with the Reflection of Light on a Moving Mirror

    E-Print Network [OSTI]

    Bernhard Rothenstein; Ioan Damian

    2005-08-18T23:59:59.000Z

    The Doppler Effect associated with the reflection on a moving mirror is reduced to two Doppler Effect experiments involving the incoming incident ray and the outgoing reflected ray or vice-versa. The dependence of the corresponding Doppler factors on the incidence angle on the stationary mirror.

  3. Detection and Removal of Chromatic Moving Shadows in Surveillance Scenarios Ivan Huerta

    E-Print Network [OSTI]

    Hansen, René Rydhof

    with umbra shadows. Consequently, umbra shadows are usually de- tected as part of moving objects in order to finally identify umbra shadows. Unlike other approaches, our method does not make any a tracking and counting. Dynamic shadows can take any size and shape, and can be both umbra (dark shadow

  4. Well-posedness of a moving two-reaction-strips problem modeling

    E-Print Network [OSTI]

    Eindhoven, Technische Universiteit

    CO2 in unsaturated cement-based porous materials (concrete). The main issue is that CO2 diffusionWell-posedness of a moving two-reaction-strips problem modeling chemical corrosion of porous media and fast reaction with Ca(OH)2 in concrete lead to a sudden drop of alkalinity near the steel reinforcement

  5. A MOVING-BOUNDARY PROBLEM FOR CONCRETE CARBONATION: GLOBAL EXISTENCE AND UNIQUENESS OF

    E-Print Network [OSTI]

    Eindhoven, Technische Universiteit

    in a porous solid ­ concrete ­ which incorporates slow diffusive transport, interfacial exchange between wet of gaseous CO2 from the atmosphere penetrate the concrete via the unsaturated porous matrix. After enteringA MOVING-BOUNDARY PROBLEM FOR CONCRETE CARBONATION: GLOBAL EXISTENCE AND UNIQUENESS OF WEAK

  6. Herpesviral replication compartments move and coalesce at nuclear speckles to enhance

    E-Print Network [OSTI]

    Knipe, David M.

    Herpesviral replication compartments move and coalesce at nuclear speckles to enhance export, Biomedical Computer Vision Group, BIOQUANT, Institute of Pharmacy and Molecular Biotechnology (IPMB at and reorganize nuclear speckles. Lastly, distinct effects of actin and myosin inhibitors on viral gene expression

  7. High Temperature Flue Gas Desulfurization In Moving Beds With Regenerable Copper Based Sorbents

    SciTech Connect (OSTI)

    Cengiz, P.A.; Ho, K.K.; Abbasian, J.; Lau, F.S.

    2002-09-20T23:59:59.000Z

    The objective of this study was to develop new and improved regenerable copper based sorbent for high temperature flue gas desulfurization in a moving bed application. The targeted areas of sorbent improvement included higher effective capacity, strength and long-term durability for improved process control and economic utilization of the sorbent.

  8. A modified law of gravitation taking account of the relative speeds of moving masses.

    E-Print Network [OSTI]

    Boyer, Edmond

    1 A modified law of gravitation taking account of the relative speeds of moving masses,version1-9Apr2010 #12;2 Abstract A modified law of gravitation is proposed which takes account law. Its application to several gravitation problems provides a good order of magnitude

  9. Grid Cells and Theta as Oscillatory Interference: Electrophysiological Data From Freely Moving Rats

    E-Print Network [OSTI]

    Burgess, Neil

    Grid Cells and Theta as Oscillatory Interference: Electrophysiological Data From Freely Moving Rats, regular firing patterns by medial entorhinal cortical (mEC) grid cells in terms of the interference specific relationships between the intrinsic firing frequency and spa- tial scale of grid cell firing

  10. Colliding and Moving Bose-Einstein Condensates: Studies of superfluidity and optical tweezers for condensate transport

    E-Print Network [OSTI]

    Colliding and Moving Bose-Einstein Condensates: Studies of superfluidity and optical tweezers for condensate transport by Ananth P. Chikkatur Submitted to the Department of Physics in partial fulfillment Bose-Einstein Condensates: Studies of superfluidity and optical tweezers for condensate transport

  11. A Moving Object Tracked by A Mobile Robot with Real-Time Obstacles Avoidance Capacity

    E-Print Network [OSTI]

    Abidi, Mongi A.

    . The robotic platform uses a visual camera to sense the movement of the desired object and a range sensor that assist a human driver for safety or comfort [6, 8]. NASA has applied this to help astronauts to carryA Moving Object Tracked by A Mobile Robot with Real-Time Obstacles Avoidance Capacity Chung

  12. For natural ventilation to work, solar gains through the facade needed to be reduced by approximately 80% from

    E-Print Network [OSTI]

    Hochberg, Michael

    Engineers, Inc. Laboratory Consultant: Research Facilities Design Energy Modeling: SOLARC ArchitectureFor natural ventilation to work, solar gains through the facade needed to be reduced--largely due to the enormous ventilation demands and the energy associated with moving and conditioning

  13. Fact #846: November 10, 2014 Trucks Move 70% of all Freight by Weight and 74% of Freight by Value Dataset

    Broader source: Energy.gov [DOE]

    Excel file with dataset for Fact #846:Trucks Move 70% of all Freight by Weight and 74% of Freight by Value

  14. Device to facilitate moving an electrical cable of an electric vehicle charging station and method of providing the same

    DOE Patents [OSTI]

    Karner, Donald B

    2014-04-29T23:59:59.000Z

    Some embodiments include a device to facilitate moving an electrical cable of an electric vehicle charging station. Other embodiments of related systems and methods are also disclosed.

  15. Natural warm inflation

    SciTech Connect (OSTI)

    Visinelli, Luca, E-mail: u0583682@utah.edu [Department of Physics and Astronomy, University of Utah, 115 South 1400 East 201, Salt Lake City, Utah 84112-0830 (United States)

    2011-09-01T23:59:59.000Z

    We derive the requirements that a generic axion-like field has to satisfy in order to play the role of the inflaton field in the warm inflation scenario. Compared to the parameter space in ordinary Natural Inflation models, we find that the parameter space in our model is enlarged. In particular, we avoid the problem of having an axion decay constant f that relates to the Planck scale, which is instead present in the ordinary Natural Inflation models; in fact, our model can easily accommodate values of the axion decay constant that lie well below the Planck scale.

  16. Go Abroad in Natural ResourcesNatural Resources

    E-Print Network [OSTI]

    Escher, Christine

    Go Abroad in Natural ResourcesNatural Resources Program Contact: Connie Patterson Program.edu/ international The Natural Resources degree is ideally suited for students who wish to study abroad! The sustainable management of natural resources is a fundamental issue, both locally and globally. Scientists

  17. Dutch gas plant uses polymer process to treat aromatic-saturated water

    SciTech Connect (OSTI)

    NONE

    1998-11-02T23:59:59.000Z

    A gas-processing plant in Harlingen, The Netherlands, operated by Elf Petroland has been running a porous-polymer extraction process since 1994 to remove aromatic compounds from water associated with produced natural gas. In the period, the unit has removed dispersed and dissolved aromatic compounds to a concentration of <1 ppm with energy consumption of only 17% that of a steam stripper, according to Paul Brooks, general manager for Akzo Nobel`s Macro Porous Polymer-Extraction (MPPE) systems. The paper describes glycol treatment the MPPE separation process, and the service contract for the system.

  18. Sand pack residual oil saturations as affected by extraction with various solvents

    E-Print Network [OSTI]

    Murray, Clarence

    1958-01-01T23:59:59.000Z

    of Water Flood Extraction Test (Sand Packs J, K, L, and N) 8. Results of Water Flood Extraction Test (Sand Pack M) TABLES I. Behavior of Oils Mixed with Various Solvents 18 II. Sand and Sand Pack Properties III. Fluid Properties IV. Results of Water... solvents which do not alter the rock-fluM properties. The present work was performed on sand, packs composed of pure ~ Oica sand to provide wetting properties simflar to natural cores and to provide packs with reproducible characteristics. Fluids studied...

  19. ARPA-E: Creating Practical, Affordable Natural Gas Storage Solutions

    ScienceCinema (OSTI)

    Boysen, Dane; Loukus, Josh; Hansen, Rita

    2014-03-13T23:59:59.000Z

    Allowing people to refuel natural gas vehicles at home could revolutionize the way we power our cars and trucks. Currently, our nation faces two challenges in enabling natural gas for transportation. The first is improving the way gas tanks are built for natural gas vehicles; they need to be conformable, allowing them to fit tightly into the vehicle. The second challenge is improving the way those tanks are refueled while maintaining cost-effectiveness, safety, and reliability. This video highlights two ARPA-E project teams with innovative solutions to these challenges. REL is addressing the first challenge by developing a low-cost, conformable natural gas tank with an interconnected core structure. Oregon State University and OnBoard Dynamics are addressing the second challenge by developing a self-refueling natural gas vehicle that integrates a compressor into its engine-using one of the engine's cylinders to compress gas eliminates the need for an expensive at-home refueling system. These two distinct technologies from ARPA-E's MOVE program illustrate how the Agency takes a multi-pronged approach to problem solving and innovation.

  20. ARPA-E: Creating Practical, Affordable Natural Gas Storage Solutions

    SciTech Connect (OSTI)

    Boysen, Dane; Loukus, Josh; Hansen, Rita

    2014-02-24T23:59:59.000Z

    Allowing people to refuel natural gas vehicles at home could revolutionize the way we power our cars and trucks. Currently, our nation faces two challenges in enabling natural gas for transportation. The first is improving the way gas tanks are built for natural gas vehicles; they need to be conformable, allowing them to fit tightly into the vehicle. The second challenge is improving the way those tanks are refueled while maintaining cost-effectiveness, safety, and reliability. This video highlights two ARPA-E project teams with innovative solutions to these challenges. REL is addressing the first challenge by developing a low-cost, conformable natural gas tank with an interconnected core structure. Oregon State University and OnBoard Dynamics are addressing the second challenge by developing a self-refueling natural gas vehicle that integrates a compressor into its engine-using one of the engine's cylinders to compress gas eliminates the need for an expensive at-home refueling system. These two distinct technologies from ARPA-E's MOVE program illustrate how the Agency takes a multi-pronged approach to problem solving and innovation.