Sample records for air ec electrostatic

  1. Electrostatic monitoring

    DOE Patents [OSTI]

    Orr, Christopher Henry (Cumbria, GB); Luff, Craig Janson (Cumbria, GB); Dockray, Thomas (Cumbria, GB); Macarthur, Duncan Whittemore (Los Alamos, NM)

    2001-01-01T23:59:59.000Z

    The apparatus and method provide a technique for more simply measuring alpha and/or beta emissions arising from items or locations. The technique uses indirect monitoring of the emissions by detecting ions generated by the emissions, the ions being attracted electrostatically to electrodes for discharge of collection. The apparatus and method employ a chamber which is sealed around the item or location during monitoring with no air being drawn into or expelled from the chamber during the monitoring process. A simplified structure and operations arises as a result, but without impairing the efficiency and accuracy of the detection technique.

  2. Biobriefcase electrostatic aerosol collector

    DOE Patents [OSTI]

    Bell, Perry M. (Tracy, CA); Christian, Allen T. (Madison, WI); Bailey, Christopher G. (Pleasanton, CA); Willis, Ladona (Manteca, CA); Masquelier, Donald A. (Tracy, CA); Nasarabadi, Shanavaz L. (Livermore, CA)

    2009-03-17T23:59:59.000Z

    A system for sampling air and collecting particles entrained in the air comprising a receiving surface, a liquid input that directs liquid to the receiving surface and produces a liquid surface, an air input that directs the air so that the air with particles entrained in the air impact the liquid surface, and an electrostatic contact connected to the liquid that imparts an electric charge to the liquid. The particles potentially including bioagents become captured in the liquid by the air with particles entrained in the air impacting the liquid surface. Collection efficiency is improved by the electrostatic contact electrically charging the liquid. The effects of impaction and adhesion due to electrically charging the liquid allows a unique combination in a particle capture medium that has a low fluid consumption rate while maintaining high efficiency.

  3. Portable liquid collection electrostatic precipitator

    DOE Patents [OSTI]

    Carlson, Duane C.; DeGange, John J.; Halverson, Justin E.

    2005-10-18T23:59:59.000Z

    A portable liquid collection electrostatic collection precipitator for analyzing air is provided which is a relatively small, self-contained device. The device has a tubular collection electrode, a reservoir for a liquid, and a pump. The pump pumps the liquid into the collection electrode such that the liquid flows down the exterior of the collection electrode and is recirculated to the reservoir. An air intake is provided such that air to be analyzed flows through an ionization section to ionize analytes in the air, and then flows near the collection electrode where ionized analytes are collected. A portable power source is connected to the air intake and the collection electrode. Ionizable constituents in the air are ionized, attracted to the collection electrode, and precipitated in the liquid. The precipitator may also have an analyzer for the liquid and may have a transceiver allowing remote operation and data collection.

  4. Electrostatically screened, voltage-controlled electrostatic chuck

    DOE Patents [OSTI]

    Klebanoff, Leonard Elliott (San Ramon, CA)

    2001-01-01T23:59:59.000Z

    Employing an electrostatically screened, voltage-controlled electrostatic chuck particularly suited for holding wafers and masks in sub-atmospheric operations will significantly reduce the likelihood of contaminant deposition on the substrates. The electrostatic chuck includes (1) an insulator block having a outer perimeter and a planar surface adapted to support the substrate and comprising at least one electrode (typically a pair of electrodes that are embedded in the insulator block), (2) a source of voltage that is connected to the at least one electrode, (3) a support base to which the insulator block is attached, and (4) a primary electrostatic shield ring member that is positioned around the outer perimeter of the insulator block. The electrostatic chuck permits control of the voltage of the lithographic substrate; in addition, it provides electrostatic shielding of the stray electric fields issuing from the sides of the electrostatic chuck. The shielding effectively prevents electric fields from wrapping around to the upper or front surface of the substrate, thereby eliminating electrostatic particle deposition.

  5. Electrostatic screening by semiconductors

    E-Print Network [OSTI]

    Krcmar, Maja

    1998-01-01T23:59:59.000Z

    Electrostatic potential in vacuum (z & 0), for q in vacuum near the interface; zs = O. 1k' ' Electrostatic potential in vacuum (z & 0), for q in vacuum far from the interface; zs = 10ks Electrostatic potential in bulk medium (z & 0), for q in vacuum near... in vacuum fsr from the interface; zp = 10ks ' 29 Relative surface charge density for q in vacuum near the interface; zc ? 10 4k' ', s = 10. 31 12 Relative surface charge density for q in vacuum far from the in- terface; zc ? 10 ks ', s = 10. FIGURE...

  6. Micromachined electrostatic vertical actuator

    DOE Patents [OSTI]

    Lee, Abraham P. (Walnut Creek, CA); Sommargren, Gary E. (Santa Cruz, CA); McConaghy, Charles F. (Livermore, CA); Krulevitch, Peter A. (Pleasanton, CA)

    1999-10-19T23:59:59.000Z

    A micromachined vertical actuator utilizing a levitational force, such as in electrostatic comb drives, provides vertical actuation that is relatively linear in actuation for control, and can be readily combined with parallel plate capacitive position sensing for position control. The micromachined electrostatic vertical actuator provides accurate movement in the sub-micron to micron ranges which is desirable in the phase modulation instrument, such as optical phase shifting. For example, compact, inexpensive, and position controllable micromirrors utilizing an electrostatic vertical actuator can replace the large, expensive, and difficult-to-maintain piezoelectric actuators. A thirty pound piezoelectric actuator with corner cube reflectors, as utilized in a phase shifting diffraction interferometer can be replaced with a micromirror and a lens. For any very precise and small amplitudes of motion` micromachined electrostatic actuation may be used because it is the most compact in size, with low power consumption and has more straightforward sensing and control options.

  7. Sandia Energy - EC Events

    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 3,625 1,006 492 742EnergyOnItemResearch > TheNuclear Press ReleasesInApplied &ClimateContact UsEC Events Home

  8. Sandia Energy - EC Publications

    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 3,625 1,006 492 742EnergyOnItemResearch > TheNuclear Press ReleasesInApplied &ClimateContact UsEC

  9. Sandia Energy - EC

    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 Scienceand RequirementsCoatings Initiated at PNNL's SequimReactors ToDecisionDistribution GridEC

  10. Unocic_ecSTEM

    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 ScienceandMesa del SolStrengthening aTurbulence mayUndergraduateAbout Us / OurPastin situ ec-S/TEM

  11. Electrostatic Graphene Loudspeaker

    Energy Innovation Portal (Marketing Summaries) [EERE]

    2013-12-20T23:59:59.000Z

    Alex Zettl and Qin Zhou of Berkeley Lab have developed a miniaturized graphene-based electrostatic audio transducer. The speaker / earphone is straightforward in design and operation and has excellent frequency response across the entire audio frequency range (20 Hz - 20k Hz) with performance matching or surpassing commercially available audio earphones. Details of this technology are available in the researchers' ...

  12. Sandia Energy - EC Publications

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

    particles may be stored in an insulated tank andor used to heat a secondary working fluid (e.g., steam, CO2, air) for the power cycle. Thermal energy storage costs can be...

  13. Recap Weak Normal EC Strong Normal EC Robustness Combined with WCT Equivalence Class Testing

    E-Print Network [OSTI]

    Mousavi, Mohammad

    Recap Weak Normal EC Strong Normal EC Robustness Combined with WCT Equivalence Class Testing: Equivalence Class Testing #12;Recap Weak Normal EC Strong Normal EC Robustness Combined with WCT Outline Recap Weak Normal EC Strong Normal EC Robustness Combined with WCT Mousavi: Equivalence Class Testing #12

  14. Sandia Energy - EC Publications

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's PossibleRadiation Protection245C Unlimited2Instability of Very Large WindWorkshop Rev6TaraAir

  15. ELECTROSTATICALLY DRIVEN ROTOR ON CONDUCTIVE LIQUID RING BEARINGS

    E-Print Network [OSTI]

    avoid dry friction, eliminate wear and enhance reliability; compared with gas bearing [7], liquid]. However, the solid-solid friction, large in microscale, requires high voltage or large current to overcome the friction and often causes serious wear [6]. Gas or air bearing [7], created through electrostatic

  16. Sandia Energy - EC Image Library

    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 3,625 1,006 492 742EnergyOnItemResearch > TheNuclear Press ReleasesInApplied &ClimateContact UsEC EventsEC

  17. EC5135: Analog Electronic Circuits EC3102: Analog Circuits

    E-Print Network [OSTI]

    Krishnapura, Nagendra

    #12;Course prerequisites Circuit analysis Mesh, nodal analyses RLC, linear dependent sources Laplace and Kemmerly, Engineering Circuit Analysis, McGraw Hill, 6/e. B. P. Lathi, Linear Systems and Signals, Oxford Circuits EC3102: Analog Circuits #12;Course contents Nonlinear circuits-incremental analysis Obtaining

  18. Argonne's SpEC Module

    ScienceCinema (OSTI)

    Harper, Jason

    2014-06-05T23:59:59.000Z

    Jason Harper, an electrical engineer in Argonne National Laboratory's EV-Smart Grid Interoperability Center, discusses his SpEC Module invention that will enable fast charging of electric vehicles in under 15 minutes. The module has been licensed to BTCPower.

  19. Argonne's SpEC Module

    SciTech Connect (OSTI)

    Harper, Jason

    2014-05-05T23:59:59.000Z

    Jason Harper, an electrical engineer in Argonne National Laboratory's EV-Smart Grid Interoperability Center, discusses his SpEC Module invention that will enable fast charging of electric vehicles in under 15 minutes. The module has been licensed to BTCPower.

  20. Micromachined silicon electrostatic chuck

    DOE Patents [OSTI]

    Anderson, Robert A. (Albuquerque, NM); Seager, Carleton H. (Albuquerque, NM)

    1996-01-01T23:59:59.000Z

    An electrostatic chuck is faced with a patterned silicon plate 11, created y micromachining a silicon wafer, which is attached to a metallic base plate 13. Direct electrical contact between the chuck face 15 (patterned silicon plate's surface) and the silicon wafer 17 it is intended to hold is prevented by a pattern of flat-topped silicon dioxide islands 19 that protrude less than 5 micrometers from the otherwise flat surface of the chuck face 15. The islands 19 may be formed in any shape. Islands may be about 10 micrometers in diameter or width and spaced about 100 micrometers apart. One or more concentric rings formed around the periphery of the area between the chuck face 15 and wafer 17 contain a low-pressure helium thermal-contact gas used to assist heat removal during plasma etching of a silicon wafer held by the chuck. The islands 19 are tall enough and close enough together to prevent silicon-to-silicon electrical contact in the space between the islands, and the islands occupy only a small fraction of the total area of the chuck face 15, typically 0.5 to 5 percent. The pattern of the islands 19, together with at least one hole 12 bored through the silicon veneer into the base plate, will provide sufficient gas-flow space to allow the distribution of the helium thermal-contact gas.

  1. Micromachined silicon electrostatic chuck

    DOE Patents [OSTI]

    Anderson, R.A.; Seager, C.H.

    1996-12-10T23:59:59.000Z

    An electrostatic chuck is faced with a patterned silicon plate, created by micromachining a silicon wafer, which is attached to a metallic base plate. Direct electrical contact between the chuck face (patterned silicon plate`s surface) and the silicon wafer it is intended to hold is prevented by a pattern of flat-topped silicon dioxide islands that protrude less than 5 micrometers from the otherwise flat surface of the chuck face. The islands may be formed in any shape. Islands may be about 10 micrometers in diameter or width and spaced about 100 micrometers apart. One or more concentric rings formed around the periphery of the area between the chuck face and wafer contain a low-pressure helium thermal-contact gas used to assist heat removal during plasma etching of a silicon wafer held by the chuck. The islands are tall enough and close enough together to prevent silicon-to-silicon electrical contact in the space between the islands, and the islands occupy only a small fraction of the total area of the chuck face, typically 0.5 to 5 percent. The pattern of the islands, together with at least one hole bored through the silicon veneer into the base plate, will provide sufficient gas-flow space to allow the distribution of the helium thermal-contact gas. 6 figs.

  2. Engineering scale electrostatic enclosure demonstration

    SciTech Connect (OSTI)

    Meyer, L.C.

    1993-09-01T23:59:59.000Z

    This report presents results from an engineering scale electrostatic enclosure demonstration test. The electrostatic enclosure is part of an overall in-depth contamination control strategy for transuranic (TRU) waste recovery operations. TRU contaminants include small particles of plutonium compounds associated with defense-related waste recovery operations. Demonstration test items consisted of an outer Perma-con enclosure, an inner tent enclosure, and a ventilation system test section for testing electrostatic curtain devices. Three interchangeable test fixtures that could remove plutonium from the contaminated dust were tested in the test section. These were an electret filter, a CRT as an electrostatic field source, and an electrically charged parallel plate separator. Enclosure materials tested included polyethylene, anti-static construction fabric, and stainless steel. The soil size distribution was determined using an eight stage cascade impactor. Photographs of particles containing plutonium were obtained with a scanning electron microscope (SEM). The SEM also provided a second method of getting the size distribution. The amount of plutonium removed from the aerosol by the electrostatic devices was determined by radiochemistry from input and output aerosol samplers. The inner and outer enclosures performed adequately for plutonium handling operations and could be used for full scale operations.

  3. A NEW ELECTROSTATIC RADON PROGENY COLLECTION METHOD

    E-Print Network [OSTI]

    John C. Dempsey; Rad Elec Inc; Darold M. Wobschall

    A new method for collecting radon progeny was investigated that reduces particle concentration including radon progeny in indoor air without air movement. The LECA (for bge Electrostatically Charged-) system uses a high voltage source to charge the collector surfaces (e.g., furniture pieces were used) once they have been electrically isolated from ground by teflon film. When a piece was touched by the high voltage lead its entire surface immediately become charged to about 60 % of the line voltage regardless of its material makeup. By limiting the current to 250 ua no sparking or shock sensation was experienced when touching the charged wire or collector surfaces. Progeny collection efficiencies were measured for collector areas from 8.6 to 5 1.8 m2 and voltages from 2.5 to 9 KV in an 82 m3 test-room. The optimum LECA configuration tested reduced all particulate in the test-room including both the attached and unattached progeny by about 92%. BACKGROUND Lung cancer, the priiciple radon health effect, is not caused by the radon gas itself but by its progeny, especially by the smaller unattached progeny particles that can penetrate into the deep respiratory tract. Several researchers have investigated methods of reducing progeny in indoor air but most methods tried have been unsuccessful because of their inability to remove enough of those more hazardous unattached progeny.

  4. Synthesis of electrostatic multielectrode deflectors

    SciTech Connect (OSTI)

    Cho, H.; Szilagyi, M. [Department of Electrical and Computer Engineering, University of Arizona, Tucson, Arizona 85721 (United States)] [Department of Electrical and Computer Engineering, University of Arizona, Tucson, Arizona 85721 (United States)

    1995-09-01T23:59:59.000Z

    Synthesis of electrostatic deflectors with given source parameters, first-order properties, and minimum aberrations can be realized by using the cubic spline method or the {ital a} {ital priori} given multielectrode approach. Synthesis of electrostatic deflectors was successfully achieved previously by using the cubic spline method. In this paper we present synthesis of electrostatic deflectors based on the {ital a} {ital priori} given multielectrode approach for the purpose of obtaining the minimum beam spot size through a sequential optimization technique. Our calculations show that the third-order geometrical deflection aberrations can be reduced by about two to three orders of magnitude using a multielectrode deflector with three units or five units, each having short cylindrical segments with geometrically octupole symmetry. {copyright} {ital 1995} {ital American} {ital Vacuum} {ital Society}

  5. Sandia Energy - EC Fact Sheets

    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 3,625 1,006 492 742EnergyOnItemResearch > TheNuclear Press ReleasesInApplied &ClimateContact UsEC Events

  6. Theory, experiment and computer simulation of the electrostatic...

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

    Theory, experiment and computer simulation of the electrostatic potential at crystalelectrolyte interfaces . Theory, experiment and computer simulation of the electrostatic...

  7. Electrostatic generator/motor configurations

    DOE Patents [OSTI]

    Post, Richard F

    2014-02-04T23:59:59.000Z

    Electrostatic generators/motors designs are provided that generally may include a first cylindrical stator centered about a longitudinal axis; a second cylindrical stator centered about the axis, a first cylindrical rotor centered about the axis and located between the first cylindrical stator and the second cylindrical stator. The first cylindrical stator, the second cylindrical stator and the first cylindrical rotor may be concentrically aligned. A magnetic field having field lines about parallel with the longitudinal axis is provided.

  8. Electrostatic microvalves utilizing conductive nanoparticles for improved speed, lower power, and higher force actuation.

    SciTech Connect (OSTI)

    Ten Eyck, Gregory A.; Branson, Eric D.; Kenis, Paul J. A. (University of Illinois, Champaign Urbana); Desai, Amit (University of Illinois, Champaign Urbana); Schudel, Ben (University of Illinois, Champaign Urbana); Givler, Richard C.; Tice, Josh (University of Illinois, Champaign Urbana); Collord, Andrew; Apblett, Christopher Alan; Cook, Adam W.

    2009-09-01T23:59:59.000Z

    We have designed and built electrostatically actuated microvalves compatible with integration into a PDMS based microfluidic system. The key innovation for electrostatic actuation was the incorporation of carbon nanotubes into the PDMS valve membrane, allowing for electrostatic charging of the PDMS layer and subsequent discharging, while still allowing for significant distention of the valveseat for low voltage control of the system. Nanoparticles were applied to semi-cured PDMS using a stamp transfer method, and then cured fully to make the valve seats. DC actuation in air of these valves yielded operational voltages as low as 15V, by using a supporting structure above the valve seat that allowed sufficient restoring forces to be applied while not enhancing actuation forces to raise the valve actuation potential. Both actuate to open and actuate to close valves have been demonstrated, and integrated into a microfluidic platform, and demonstrated fluidic control using electrostatic valves.

  9. 1. Aspen Plus KOH , DMC 98.5% (EC

    E-Print Network [OSTI]

    Hong, Deog Ki

    5 1. Aspen Plus KOH , DMC 98.5% (EC : 100%) 2003 4 11 Aspen Plus(12 of Reaction Aspen Plus DMC . EC 100% 96.8% . (5) 99% EC . , 1/4 30 . #12;

  10. EC-Web Project Plan | Department of Energy

    Energy Savers [EERE]

    EC-Web Project Plan EC-Web Project Plan The Electronic Commerce World Wide Web (EC-WEB) Project Plan, from an actual DOE software engineering project, can be used as a template to...

  11. Electrostatic Potential of Specific Mineral Faces. | EMSL

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

    interactions, and in testing surface complexation theories. Citation: Zarzycki PP, SME Chatman, T Preocanin, and KM Rosso.2011."Electrostatic Potential of Specific Mineral...

  12. Smart Grid EV Communication (SpEC) Module | Argonne National...

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

    Grid EV Communication (SpEC) Module Technology available for licensing: Argonne's direct current charging digital communication controller, the Smart Grid EV Communication (SpEC)...

  13. Electrostatic charging of lunar dust

    SciTech Connect (OSTI)

    Walch, Bob [Department of Physics, University of Northern Colorado, Greeley, Colorado 80639 (United States); Horanyi, Mihaly [LASP, University of Colorado, Boulder, Colorado 80309-0392 (United States); Robertson, Scott [Department of Physics, University of Colorado, Boulder, Colorado 80309-0391 (United States)

    1998-10-21T23:59:59.000Z

    Transient dust clouds suspended above the lunar surface were indicated by the horizon glow observed by the Surveyor spacecrafts and the Lunar Ejecta and Meteorite Experiment (Apollo 17), for example. The theoretical models cannot fully explain these observations, but they all suggest that electrostatic charging of the lunar surface due to exposure to the solar wind plasma and UV radiation could result in levitation, transport and ejection of small grains. We report on our experimental studies of the electrostatic charging properties of an Apollo-17 soil sample and two lunar simulants MLS-1 and JSC-1. We have measured their charge after exposing individual grains to a beam of fast electrons with energies in the range of 20{<=}E{<=}90 eV. Our measurements indicate that the secondary electron emission yield of the Apollo-17 sample is intermediate between MLS-1 and JSC-1, closer to that of MLS-1. We will also discuss our plans to develop a laboratory lunar surface model, where time dependent illumination and plasma bombardment will closely emulate the conditions on the surface of the Moon.

  14. ELECTROSTATICALLY-ACTUATED RECONFIGURABLE ELASTOMER MICROFLUIDICS

    E-Print Network [OSTI]

    Maharbiz, Michel

    ELECTROSTATICALLY-ACTUATED RECONFIGURABLE ELASTOMER MICROFLUIDICS Meng-Ping Chang1 , and Michel M a user-programmable reconfigurable elastomer microfluidic system which employs electrostatic actuation of water-filled elastomer microfluidic channels. Device actuation was achieved by applying 5 MHz, 15-20 V

  15. How and why electrostatic charge of combustible nanoparticles can radically change the mechanism and rate of their oxidation in humid atmosphere

    E-Print Network [OSTI]

    Meshcheryakov, Oleg

    2010-01-01T23:59:59.000Z

    Electrostatically charged aerosol nanoparticles strongly attract surrounding polar gas molecules due to a charge-dipole interaction. In humid air, the substantial electrostatic attraction and acceleration of surrounding water vapour molecules towards charged combustible nanoparticles cause intense electrostatic hydration and preferential oxidation of these nanoparticles by accelerated water vapor molecules rather than non-polar oxygen molecules. In particular, electrostatic acceleration, acquired by surrounding water vapour molecules at a distance of their mean free path from the minimally charged iron metal nanoparticle can increase an oxidative activity of these polar molecules with respect to the nanoparticle by a factor of one million. Intense electrostatic hydration of charged metal nanoparticles converts the nanoparticle's oxide based shells into the hydroxide based electrolyte shells, transforming these nanoparticles into metal/air core-shell nanobatteries, periodically short-circuited by intra-particl...

  16. Electrostatic thin film chemical and biological sensor

    DOE Patents [OSTI]

    Prelas, Mark A. (Columbia, MO); Ghosh, Tushar K. (Columbia, MO); Tompson, Jr., Robert V. (Columbia, MO); Viswanath, Dabir (Columbia, MO); Loyalka, Sudarshan K. (Columbia, MO)

    2010-01-19T23:59:59.000Z

    A chemical and biological agent sensor includes an electrostatic thin film supported by a substrate. The film includes an electrostatic charged surface to attract predetermined biological and chemical agents of interest. A charge collector associated with said electrostatic thin film collects charge associated with surface defects in the electrostatic film induced by the predetermined biological and chemical agents of interest. A preferred sensing system includes a charge based deep level transient spectroscopy system to read out charges from the film and match responses to data sets regarding the agents of interest. A method for sensing biological and chemical agents includes providing a thin sensing film having a predetermined electrostatic charge. The film is exposed to an environment suspected of containing the biological and chemical agents. Quantum surface effects on the film are measured. Biological and/or chemical agents can be detected, identified and quantified based on the measured quantum surface effects.

  17. Electrostatic generator/motor configurations

    DOE Patents [OSTI]

    Post, Richard Freeman

    2012-09-11T23:59:59.000Z

    Electrostatic generators/motors designs are provided that include a stator fixedly connected to a first central support centered about a central axis. The stator elements are attached to the first central support. Similarly, a second stator is connected to a central support centered about the central axis, and the second stator has stator elements attached to the second central support. A rotor is located between the first stator and the second stator and includes an outer support, where the rotor is rotatably centered about the central axis, the rotor having elements in contact with the outer support, each rotor element having an extending rotor portion that extends radially from the outer support toward the axis of rotation.

  18. Electrostatics and radioactive aerosol behavior

    SciTech Connect (OSTI)

    Clement, C.F.

    1994-12-31T23:59:59.000Z

    Radioactive aerosols differ from their nonradioactive counterparts by their ability to charge themselves by emitting charged particles during the radioactive decay process. Evidence that electrostatics, including this charging process, can affect the transport of the aerosols was summarized previously. Charge distributions and the mean charge for a monodisperse radioactive aerosol have been considered in detail. The principal results of theory to calculate charge distributions on a aerosol with a size distribution, changes to Brownian coagulation rates for an aerosol in a reactor containment, and possible changes to aerosol deposition resulting from the charging will be presented. The main purpose of the work has been to improve calculations of aerosol behavior in reactor containments, but behavior in less ionizing environments will be affected more strongly, and some problems remain to be solved in performing reliable calculations.

  19. Alternative Electrostatic Green's Function for a Long Tube. ...

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

    Alternative Electrostatic Green's Function for a Long Tube. Alternative Electrostatic Green's Function for a Long Tube. Abstract: This note describes an expression for the...

  20. Dendrite-Free Lithium Deposition via Self-Healing Electrostatic...

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

    via Self-Healing Electrostatic Shield Mechanism . Dendrite-Free Lithium Deposition via Self-Healing Electrostatic Shield Mechanism . Abstract: Lithium metal batteries are called...

  1. Carbon nanotubes decorated with Pt nanoparticles via electrostatic...

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

    Pt nanoparticles via electrostatic self-assembly: a highly active oxygen reduction Carbon nanotubes decorated with Pt nanoparticles via electrostatic self-assembly: a highly...

  2. 209th ECS Meeting, Abstract #1265, copyright ECS MICROMACHINED CERAMIC PLATFORM FOR

    E-Print Network [OSTI]

    Stowell, Michael

    045507-01). Figure 1. Neurons grown on nanoporous ceramic without polylysine matrix. Figure 2. Ceramic209th ECS Meeting, Abstract #1265, copyright ECS MICROMACHINED CERAMIC PLATFORM FOR LIVING NEURONAL ceramic chips for guided growth of living neurons and their interfacing into functional networks. Our core

  3. Intrinsic electrostatic effects in nanostructured ceramics

    SciTech Connect (OSTI)

    Uberuaga, Blas Pedro [Los Alamos National Laboratory; Stanek, Chris R [Los Alamos National Laboratory; Nerikar, Pankaj V [Los Alamos National Laboratory

    2009-01-01T23:59:59.000Z

    Using empirical potentials, we have found that electrostatic dipoles can be created at grain boundaries formed from non-polar surfaces of fluorite-structured materials. In particular, the {Sigma}5(310)/[001] symmetric tilt grain boundary reconstructs to break the symmetry in the atomic structure at the boundary, forming the dipole. This dipole results in an abrupt change in electrostatic potential across the boundary. In multilayered ceramics composed of stacks of grain boundaries, the change in electrostatic potential at the boundary results in profound electrostatic effects within the crystalline layers, the nature of which depends on the electrostatic boundary conditions. For open-circuit boundary conditions, layers with either high or low electrostatic potential are formed. By contrast, for short-circuit boundary conditions, electric fields can be created within each layer, the strength of which then depends on the thickness of the layers. These electrostatic effects may have important consequences for the behavior of defects and dopants within these materials and offer the possibility of interesting technological applications.

  4. EC Transmission Line Risk Identification and Analysis

    SciTech Connect (OSTI)

    Bigelow, Tim S [ORNL

    2012-04-01T23:59:59.000Z

    The purpose of this document is to assist in evaluating and planning for the cost, schedule, and technical project risks associated with the delivery and operation of the EC (Electron cyclotron) transmission line system. In general, the major risks that are anticipated to be encountered during the project delivery phase associated with the implementation of the Procurement Arrangement for the EC transmission line system are associated with: (1) Undefined or changing requirements (e.g., functional or regulatory requirements) (2) Underperformance of prototype, first unit, or production components during testing (3) Unavailability of qualified vendors for critical components Technical risks associated with the design and operation of the system are also identified.

  5. Gas-solid transport in a 0. 0508 m pipe at various inclinations with and without electrostatics

    SciTech Connect (OSTI)

    Myler, C.A.; Zaltash, A.; Klinzing, G.E.

    1985-01-01T23:59:59.000Z

    The transport of solid particles by air through a 0.0508 m pipe was studied in vertical, horizontal, and 45/sup 0/ orientations. Through control of the air humidity, the effects of electrostatic charging was observed. Pressure drop and particle velocities were measured. Particles used included 79 ..mu..m, 125 ..mu..m, and 450 ..mu..m glass beads and 128 ..mu..m Plexiglas beads. Analysis of particle velocity, pressure drop fluctuation, electrostatic pressure drop, choking and saltation was performed. Visual observations of the flow patterns and behavior were made. A linear stability analysis for the three orientations was performed.

  6. ELECTROSTATICALLY ENHANCED BARRIER FILTER COLLECTION

    SciTech Connect (OSTI)

    John Erjavec; Michael D. Mann; Ryan Z. Knutson; Michael L. Swanson; Michael E. Collings

    2003-06-01T23:59:59.000Z

    This work was performed through the University of North Dakota (UND) Chemical Engineering Department with assistance from UND's Energy & Environmental Research Center. This research was undertaken in response to the U.S. Department of Energy Federal Technology Center Program Solicitation No. DE-PS26-99FT40479, Support of Advanced Coal Research at U.S. Universities and Colleges. Specifically, this research was in support of the UCR Core Program and addressees Topic 1, Improved Hot-Gas Contaminant and Particulate Removal Techniques, introducing an advanced design for particulate removal. Integrated gasification combined cycle (IGCC) offers the potential for very high efficiency and clean electric generation. In IGCC, the product gas from the gasifier needs to be cleaned of particulate matter to avoid erosion and high-temperature corrosion difficulties arising with the turbine blades. Current methods involve cooling the gases to {approx}100 C to condense alkalis and remove sulfur and particulates using conventional scrubber technology. This ''cool'' gas is then directed to a turbine for electric generation. While IGCC has the potential to reach efficiencies of over 50%, the current need to cool the product gas for cleaning prior to firing it in a turbine is keeping IGCC from reaching its full potential. The objective of the current project was to develop a highly reliable particulate collector system that can meet the most stringent turbine requirements and emission standards, can operate at temperatures above 1500 F, is applicable for use with all U.S. coals, is compatible with various sorbent injection schemes for sulfur and alkali control, can be integrated into a variety of configurations for both pressurized gasification and combustion, increases allowable face velocity to reduce filter system capital cost, and is cost-competitive with existing technologies. The collector being developed is a new concept in particulate control called electrostatically enhanced barrier filter collection (EBFC). This concept combines electrostatic precipitation (ESP) with candle filters in a single unit. Similar technology has been recently proven on a commercial scale for atmospheric applications, but needed to be tested at high temperatures and pressures. The synergy obtained by combining the two control technologies into a single system should actually reduce filter system capital and operating costs and make the system more reliable. More specifically, the ESP is expected to significantly reduce candle filter load and also to limit ash reintrainment, allowing for full recovery of baseline pressure drop during backpulsing of the filters.

  7. Electrostatic-plasma-wave energy flux

    E-Print Network [OSTI]

    Amendt, P.; Rostoker, N.

    1984-01-01T23:59:59.000Z

    would reduce cross- field wave-energy convection since theor cross-field leakage of wave energy are ap- that thecomposition of electrostatic-wave-energy field degrees of

  8. Flow preconditioner for electrostatic precipitator

    SciTech Connect (OSTI)

    Honacker, H.; Drlik, R.J.

    1980-01-01T23:59:59.000Z

    A flow preconditioner for an electrostatic precipitator removes particulate matter from a stream of polluted gas immediately after it passes through a tangential inlet at the lower end of a vertical cylindrical housing and straightens and divides the stream into laminations parallel to the axis of the housing. It comprises an annular ledge or choke ring extending inwardly from said housing above the inlet and an assembly of vanes above said ledge extending radially from the axis of the housing and angularly spaced apart. Each of said vanes has a flow receiving edge directed toward said inlet, a curved portion extending upwardly and away from said inlet, and a flat portion extending upwardly from said curved portion in a plane parallel to the housing axis. The curved portion of each vane defines a trough having a camber which gradually decreases along its span from the outer end of the vane towards the axis of the housng, together with means to vary the centrifugal flow distribution relative to the housing to render the preconditioner adjustable for various flow capacities.

  9. 7, 1074310766, 2007 EC size distributions

    E-Print Network [OSTI]

    Boyer, Edmond

    carbon in a coastal urban atmosphere in South China: characteristics, evolution processesACPD 7, 10743­10766, 2007 EC size distributions in an urban atmosphere in China Xiao-Feng Huang, Kowloon, Hong Kong, China Received: 30 May 2007 ­ Accepted: 19 July 2007 ­ Published: 25 July 2007

  10. ME 326 Thermodynamics ABET EC2000 syllabus

    E-Print Network [OSTI]

    Ben-Yakar, Adela

    ME 326 ­ Thermodynamics Page 1 ABET EC2000 syllabus ME 326 ­ Thermodynamics Summer 2009 Required or Elective: Required 2008-2010 Catalog Data: Properties, heat and work, first and second laws, thermodynamic, and Physics 303K with a grade of at least C in each. Textbook(s): Thermodynamics: An Integrated Learning

  11. awaits ec decision: Topics by E-print Network

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

    Engineering Indian Institute of Technology Krishnapura, Nagendra 4 ME-SE-EC 710 Syllabus Page 1 of 7 ME-SE-EC 710 SYLLABUS Materials Science Websites Summary: Decisions....

  12. Electrostatic supersolitons in three-species plasmas

    SciTech Connect (OSTI)

    Verheest, Frank [Sterrenkundig Observatorium, Universiteit Gent, Krijgslaan 281, B-9000 Gent (Belgium); School of Chemistry and Physics, University of KwaZulu-Natal, Durban 4000 (South Africa); Hellberg, Manfred A. [School of Chemistry and Physics, University of KwaZulu-Natal, Durban 4000 (South Africa); Kourakis, Ioannis [Department of Physics and Astronomy, Centre for Plasma Physics, Queen's University Belfast, BT7 1NN Northern Ireland (United Kingdom)

    2013-01-15T23:59:59.000Z

    Superficially, electrostatic potential profiles of supersolitons look like those of traditional solitons. However, their electric field profiles are markedly different, having additional extrema on the wings of the standard bipolar structure. This new concept was recently pointed out in the literature for a plasma model with five species. Here, it is shown that electrostatic supersolitons are not an artefact of exotic, complicated plasma models, but can exist even in three-species plasmas and are likely to occur in space plasmas. Further, a methodology is given to delineate their existence domains in a systematic fashion by determining the specific limiting factors.

  13. Corona driven air propulsion for cooling of electronics F. Yang, N.E. Jewell-Larsen, D.L. Brown, K. Pendergrass, D.A. Parker, I.A. Krichtafovitch*, A.V. Mamishev

    E-Print Network [OSTI]

    Mamishev, Alexander

    Abstract: The possibility of building a high voltage electrostatic air pump for cooling of microelectronics closely to increase the heat exchange surface area, resulting in narrower channels between the fins. Air viscosity in narrow channels reduces the cooling efficiency of the heat sinks. Electrostatic air propulsion

  14. Experimental Characterization of Plasma Heating with Beating Electrostatic Waves

    E-Print Network [OSTI]

    Choueiri, Edgar

    Experimental Characterization of Plasma Heating with Beating Electrostatic Waves Benjamin Jorns and Edgar Y. Choueiri Electric Propulsion and Plasma Dynamics Laboratory, Princeton University, Princeton, NJ, 08540 The heating of ions in a magnetized plasma by two electrostatic waves whose frequencies

  15. Electrostatic zipping actuators and their applications to MEMS

    E-Print Network [OSTI]

    Li, Jian, Ph. D. Massachusetts Institute of Technology

    2004-01-01T23:59:59.000Z

    Electrostatic actuation is the most common and well-developed method of generating motion on the micro scale. To overcome the challenge of providing both high force and large displacement, electrostatic zipping actuators ...

  16. Fast dynamic force computation for electrostatic and electromagnetic conductors 

    E-Print Network [OSTI]

    Koteeswaran, Prabhavathi

    2005-02-17T23:59:59.000Z

    This thesis presents an improved method for dynamic force computation applicable to both electrostatic and electromagnetic conductors with complex 3D geometries. During the transient simulation of electrostatic actuated MEMS, the positions...

  17. Multipole Electrostatics in Hydration Free Energy Calculations

    E-Print Network [OSTI]

    Ponder, Jay

    Multipole Electrostatics in Hydration Free Energy Calculations YUE SHI,1 CHUANJIE WU,2 JAY W Acceptance Ratio method. We have compared two approaches to derive the atomic multipoles from quantum mechanical calculations: one directly from the new distributed multipole analysis and the other involving

  18. Electrostatics and the Laboratory on a Chip

    E-Print Network [OSTI]

    Jones, Thomas B.

    chromatograph. Oak Ridge National Lab. #12;9 Role of Electrostatics in Micromechanical Systems · MEMS: usually Library of Congress (~9M), the National Library of France (~5M), & ALL OTHER PRINTED MATTER on ~3 sq of Science · National Science Foundation (USA) · Center for Future Health (Univ. of Rochester) · National

  19. ECLiPSe - from LP to CLP

    E-Print Network [OSTI]

    Schimpf, Joachim

    2010-01-01T23:59:59.000Z

    ECLiPSe is a Prolog-based programming system, aimed at the development and deployment of constraint programming applications. It is also used for teaching most aspects of combinatorial problem solving, e.g. problem modelling, constraint programming, mathematical programming, and search techniques. It uses an extended Prolog as its high-level modelling and control language, complemented by several constraint solver libraries, interfaces to third-party solvers, an integrated development environment and interfaces for embedding into host environments. This paper discusses language extensions, implementation aspects, components and tools that we consider relevant on the way from Logic Programming to Constraint Logic Programming.

  20. San Juan Basin EC | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro Industries Pvt Ltd Jump to:RoscommonSBYSalton SeaBasin EC Jump to: navigation, search NEPA

  1. Klystron having electrostatic quadrupole focusing arrangement

    DOE Patents [OSTI]

    Maschke, A.W.

    1983-08-30T23:59:59.000Z

    A klystron includes a source for emitting at least one electron beam, and an accelerator for accelerating the beam in a given direction through a number of drift tube sections successively aligned relative to one another in the direction of the beam. A number of electrostatic quadrupole arrays are successively aligned relative to one another along at least one of the drift tube sections in the beam direction for focusing the electron beam. Each of the electrostatic quadrupole arrays forms a different quadrupole for each electron beam. Two or more electron beams can be maintained in parallel relationship by the quadrupole arrays, thereby enabling space charge limitations encountered with conventional single beam klystrons to be overcome. 4 figs.

  2. Molecular electrostatic potentials by systematic molecular fragmentation

    SciTech Connect (OSTI)

    Reid, David M.; Collins, Michael A. [Research School of Chemistry, Australian National University, Canberra, ACT 0200 (Australia)] [Research School of Chemistry, Australian National University, Canberra, ACT 0200 (Australia)

    2013-11-14T23:59:59.000Z

    A simple method is presented for estimating the molecular electrostatic potential in and around molecules using systematic molecular fragmentation. This approach estimates the potential directly from the electron density. The accuracy of the method is established for a set of organic molecules and ions. The utility of the approach is demonstrated by estimating the binding energy of a water molecule in an internal cavity in the protein ubiquitin.

  3. Centrifugally driven electrostatic instability in extragalactic jets

    E-Print Network [OSTI]

    Z. Osmanov

    2008-01-29T23:59:59.000Z

    The stability problem of the rotation induced electrostatic wave in extragalactic jets is presented. Solving a set of equations describing dynamics of a relativistic plasma flow of AGN jets, an expression of the instability rate has been derived and analyzed for typical values of AGNs. The growth rate was studied versus the wave length and the inclination angle and it has been found that the instability process is much efficient with respect to the accretion disk evolution, indicating high efficiency of the instability.

  4. Investigation of Methods of Disinfection in an All-air System 

    E-Print Network [OSTI]

    Wang, J.; Yan, Z.

    2006-01-01T23:59:59.000Z

    The experiment of removing bacteria and indoor air particulates by a bag ventilation filter with synthetic media and an electrostatic filter was carried out, and the effect of killing bacteria by ozone application was also tested. The results show...

  5. Investigation of Methods of Disinfection in an All-air System

    E-Print Network [OSTI]

    Wang, J.; Yan, Z.

    2006-01-01T23:59:59.000Z

    The experiment of removing bacteria and indoor air particulates by a bag ventilation filter with synthetic media and an electrostatic filter was carried out, and the effect of killing bacteria by ozone application was also tested. The results show...

  6. ENG EC505 Stochastic Processes 2008-2009 Catalog Data

    E-Print Network [OSTI]

    ENG EC505 Stochastic Processes 2008-2009 Catalog Data: Prereq: ENG EC 401, CAS MA 142 or equivalent: "Course Notes on Stochastic Processes" by D. A. Castanon & W. C. Karl available from the class web site, Prentice-Hall, 1986. K. Sam Shanmugan, Random Signals: Detection, Estimation, and Data Analysis, Wiley

  7. Assessment of operating parameter variation on electrostatic precipitator performance

    E-Print Network [OSTI]

    Gunn, Roam Anthony

    1974-01-01T23:59:59.000Z

    lignite coal were collected and resistivity analysis performed for varying conditions of temperature and humidity. As a result of the laboratory analysis, it was determined that moisture and temperature conditioning of Texas lignite coal fly ash... results. I 5. Sample 8 moisturi ed test results. 57 64 66 69 77 LIST OF FIGURES Figure Lignite coal deposit formations in East Texas. Z. The electrostatic precipitator system 3. Electrostatic precipitator in operation. 4. Electrostatic...

  8. The electrostatic charge generation characteristics of transformer oil 

    E-Print Network [OSTI]

    Bowen, James Rensselaer

    1990-01-01T23:59:59.000Z

    electrostatic discharge can pose a life threatening ;hazard. According to Eichel (I), three conditions must be met in order for an electrostatic discharge to cause an explosion in gases: l. An explosive gas mixture must be present. 2. An electric field... will be ineffective. Electrostatic charges on ungrounded conductors will distribute evenly over the entire surface. Charges on nonconductors will remain at the point where they were initially formed, even if the material is connected to a ground (2) . Static...

  9. EC Driver - 41" Stroke Hydraulic Cylinder

    SciTech Connect (OSTI)

    Jaques, A.; /Fermilab

    1990-05-24T23:59:59.000Z

    It was decided to use a hydraulic cylinder resting on the floor of the argon spill trough in the EC carriage to drive the EC's motion on the center beam. Space was limited due to the spill bellows and their required support and containment system. The 0.0. of the cylinder had to be limited to 3 to 3-1/2 inches, maximum. The weight of a wet EC and carriage is estimated to be 320 tons. The rolling coefficient of friction of the Tychoway rollers chosen to guide the EC and carriage along the hardened centerbeam ways is claimed to be less than 0.0025. The driver will also need to overcome the forces produced by moving (rotating) the numerous bayonets located at the top of the cryostats in the many piping systems. These forces were conservatively estimated at 1000 lbs. The drive force required to overcome these forces was then calculated to be: 320(2,000) x 0.0025 + 1,000 = 2.600 lbs. (min. required). Due to the uncertainty in the actual roller coefficient of friction and the various unknowns in estimating the resistive forces contained in the piping and cabling systems attached to the cryostat, a conservative design factor of 5 was chosen. This should account for any uncertainty in our estimation of the minimum required drive force and also leaves us with a reserve to fall back on in case any unforeseen problems might arise. Thus the desired capacity of the driver was set at: (2,600) x 5 = 13,000 lbs. (design capacity). Assuming a 3 inch O.D. cylinder with a 1/2 inch wall (2 inch bore), we first analyzed a 1-3/8 inch diameter piston rod. Using Shigley & Mischke's 'Mechanical Engineering Design' (5th Ed.) and it's formulas for long columns with central loading, it was determined that a 1-3/8 inch diameter rod would not suffice, given our safety factor of 2. Increasing the piston rod diameter to 1-1/2 inches proved to be sufficient. The maximum allowable load came out to be approximately 17,000 lbs., which is greater than the 13,000 lbs. design capacity. With a 1-1/2 inch rod, a 2 inch bore and 10,000 psi capacity, the maximum return (retraction) force is: ({pi}/4)(2{sup 2}-1.52) x (10,000) = 13,744 lbs. (return force). This meets the desired design capacity of the cylinder. On the extension of the cylinder, the pressure will be limited such to produce only the 13,000 lb. design capacity. Through the use of a regulator on the cylinder extension inlet, the pressure will be limited to: 13,000/[({pi}/4)(2){sup 2}] {approx_equal} 4,200 psi. (regulator setting) and 4,200 x ({pi}/4)(2){sup 2} = 13,195 lbs. (thrust force). Another reference used by some Fermi engineers in designing hydraulic cylinders is the 'Design Engineers Handbook', Bulletin 0224-B1 published by the Parker-Hannifin Corporation. The piston rod-stroke selection table on page b-5 is used to determine the stroke factor. Our setup most approximates Case II of the table which gives a stroke factor of 0.70. Multiplying this by the actual stroke (41-inch) gives us a basic length of 28.7-inch. Using the piston rodstroke selection graph on page b-6, the 1-1/2 inch rod and 28.7-inch basic length indicate an allowable thrust of approximately 13,000 lbs. According to the Chief Application Engineer at the Parker-Hannifin regional sales office in Des Plaines, IL, a min imum safety factor of 4 can be assumed in the piston rod-stroke selection graph, possibly even higher. This would be at least twice as high as our initial safety factor of 2. Thus we feel our cylinder design falls well within the acceptable region of this reference.

  10. SPARCLE: Electrostatic Tool for Lunar Dust Control

    SciTech Connect (OSTI)

    Clark, P. E.; Curtis, S. A.; Minetto, F.; Cheung, C. Y.; Keller, J. F.; Moore, M.; Calle, C. I. [Catholic University of America Washington DC located at Code 695 NASA/GSFC Greenbelt, MD 20771 (United States); NASA/GSFC Greenbelt, MD 20771 (United States); Code KT-E NASA/KSC Cape Kennedy, FL 32899 (United States)

    2009-03-16T23:59:59.000Z

    Successful exploration of most planetary surfaces, with their impact-generated dusty regoliths, will depend on the capabilities to keep surfaces free of the dust which could compromise performance and to collect dust for characterization. Solving the dust problem is essential before we return to the Moon. During the Apollo missions, the discovery was made that regolith fines, or dust, behaved like abrasive velcro, coating surfaces, clogging mechanisms, and making movement progressively more difficult as it was mechanically stirred up during surface operations, and abrading surfaces, including spacesuits, when attempts were made to remove it manually. In addition, some of the astronauts experienced breathing difficulties when exposed to dust that got into the crew compartment. The successful strategy will deal with dust dynamics resulting from interaction between mechanical and electrostatic forces. Here we will describe the surface properties of dust particles, the basis for their behavior, and an electrostatically-based approach and methodology for addressing this issue confirmed by our preliminary results. Our device concept utilizes a focused electron beam to control the electrostatic potential of the surface. A plate of the opposite potential is then used to induce dust migration in the presence of an electrical field. Our goal is a compact device of <5 kg mass and using <5 watts of power to be operational in <5 years with heritage from ionic sweepers for active spacecraft potential control (e.g., on POLAR). Rovers could be fitted with devices that could harness the removal of dust for sampling as part of the extended exploration process on Mercury, Mars, asteroids or outer solar system satellites, as well as the Moon.

  11. E-Print Network 3.0 - accelerated electrostatic interactions...

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

    << < 1 2 3 4 5 > >> 1 Fly-Casting in Protein-DNA Binding: Frustration between Protein Folding and Electrostatics Facilitates Target Recognition Summary: , the free energy...

  12. antimicrobial peptide electrostatic: Topics by E-print Network

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

    Helsing, Johan 294 Experiment for Plasma Energization with Beating Electrostatic Waves Plasma Physics and Fusion Websites Summary: attractive as it is electrodeless (and thus...

  13. angle electrostatic deflector: Topics by E-print Network

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

    Helsing, Johan 208 Experiment for Plasma Energization with Beating Electrostatic Waves Plasma Physics and Fusion Websites Summary: attractive as it is electrodeless (and thus...

  14. amplitude electrostatic wave: Topics by E-print Network

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

    Suresh 2012-07-25 20 Experiment for Plasma Energization with Beating Electrostatic Waves Plasma Physics and Fusion Websites Summary: attractive as it is electrodeless (and thus...

  15. Mapping Electrostatic Profiles Across Axial p-n Junctions in...

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

    about the electrically active dopant distributions in nanowire structures. Citation: Gan Z, DE Perea, J Yoo, ST Picraux, DJ Smith, and MR Mccartney.2013."Mapping Electrostatic...

  16. Downflow dryout in a heated ribbed vertical annulus with a cosine power profile (Results from test series ECS-2, WSR, and ECS-2cE)

    SciTech Connect (OSTI)

    Larson, T.K.; Anderson, J.L.; Condie, K.G.

    1990-12-01T23:59:59.000Z

    Experiments designed to investigate surface dryout in a heated, ribbed annulus test section simulating one of the annular coolant channels of a Savannah River Plant production reactor Mark 22 fuel assembly have been conducted at the Idaho National Engineering Laboratory. The inner surface of the annulus was constructed of aluminum and was electrically heated to provide an axial cosine power profile and a flat azimuthal power shape. Data presented in this report are from the ECS-2, WSR, and ECS-2cE series of tests. These experiments were conducted to examine the onset of wall thermal excursion for a range of flow, inlet fluid temperature, and annulus outlet pressure. Hydraulic boundary conditions on the test section represent flowrates (0.1--1.4 1/s), inlet fluid temperatures (293--345 K), and outlet pressures (-18--139.7 cm of water relative to the bottom of the heated length (61--200 cm of water relative to the bottom of the lower plenum)) expected to occur during the Emergency Coolant System (ECS) phase of postulated Loss-of-Coolant Accident in a production reactor. The onset of thermal excursion based on the present data is consistent with data gathered in test rigs with flat axial power profiles. The data indicate that wall dryout is primarily a function of liquid superficial velocity. Air entrainment rate was observed to be a strong function of the boundary conditions (primarily flowrate and liquid temperature), but had a minor effect on the power at the onset of thermal excursion for the range of conditions examined. 14 refs., 33 figs., 13 tabs.

  17. Electrostatics and packing in biomolecules : accounting for conformational change in protein folding and binding

    E-Print Network [OSTI]

    Caravella, Justin Andrew, 1974-

    2002-01-01T23:59:59.000Z

    The role of electrostatics and packing in protein folding and molecular association was assessed in different biomolecular systems. A continuum electrostatic model was applied to long-range electrostatic effects in the ...

  18. Continuum Electrostatic Energies of Macromolecules in Aqueous Solutions Marco Scarsi, Joannis Apostolakis, and Amedeo Caflisch*

    E-Print Network [OSTI]

    Caflisch, Amedeo

    Continuum Electrostatic Energies of Macromolecules in Aqueous Solutions Marco Scarsi, Joannis evaluation of electrostatic energies of macromolecules in aqueous solutions is useful for many problems for obtaining correct electrostatic energies of molecules in solution. In addition, it is demonstrated

  19. Electrostatic Free Energy and its Variations in Implicit Solvent Models

    E-Print Network [OSTI]

    Li, Bo

    Electrostatic Free Energy and its Variations in Implicit Solvent Models Jianwei Che , Joachim. The unique set of such concentrations that minimize this free energy are given by the usual Boltzmann. The variation of the electrostatic free energy with respect to the location change of solute-solvent interfaces

  20. Magnetic and electrostatic confinement of plasma with tuning of electrostatic field

    DOE Patents [OSTI]

    Rostoker, Norman; Binderbauer, Michl; Qerushi, Artan; Tahsiri, Hooshang

    2006-10-10T23:59:59.000Z

    A system and method for containing plasma and forming a Field Reversed Configuration (FRC) magnetic topology are described in which plasma ions are contained magnetically in stable, non-adiabatic orbits in the FRC. Further, the electrons are contained electrostatically in a deep energy well, created by tuning an externally applied magnetic field. The simultaneous electrostatic confinement of electrons and magnetic confinement of ions avoids anomalous transport and facilitates classical containment of both electrons and ions. In this configuration, ions and electrons may have adequate density and temperature so that upon collisions they are fused together by nuclear force, thus releasing fusion energy. Moreover, the fusion fuel plasmas that can be used with the present confinement system and method are not limited to neutronic fuels only, but also advantageously include advanced fuels.

  1. Magnetic and electrostatic confinement of plasma with tuning of electrostatic field

    DOE Patents [OSTI]

    Rostoker, Norman; Binderbauer, Michl; Qerushi, Artan; Tahsiri, Hooshang

    2006-03-21T23:59:59.000Z

    A system and method for containing plasma and forming a Field Reversed Configuration (FRC) magnetic topology are described in which plasma ions are contained magnetically in stable, non-adiabatic orbits in the FRC. Further, the electrons are contained electrostatically in a deep energy well, created by tuning an externally applied magnetic field. The simultaneous electrostatic confinement of electrons and magnetic confinement of ions avoids anomalous transport and facilitates classical containment of both electrons and ions. In this configuration, ions and electrons may have adequate density and temperature so that upon collisions they are fused together by nuclear force, thus releasing fusion energy. Moreover, the fusion fuel plasmas that can be used with the present confinement system and method are not limited to neutronic fuels only, but also advantageously include advanced fuels.

  2. Magnetic and electrostatic confinement of plasma with tuning of electrostatic field

    DOE Patents [OSTI]

    Rostoker, Norman (Irvine, CA); Binderbauer, Michl (Irvine, CA); Qerushi, Artan (Irvine, CA); Tahsiri, Hooshang (Irvine, CA)

    2008-10-21T23:59:59.000Z

    A system and method for containing plasma and forming a Field Reversed Configuration (FRC) magnetic topology are described in which plasma ions are contained magnetically in stable, non-adiabatic orbits in the FRC. Further, the electrons are contained electrostatically in a deep energy well, created by tuning an externally applied magnetic field. The simultaneous electrostatic confinement of electrons and magnetic confinement of ions avoids anomalous transport and facilitates classical containment of both electrons and ions. In this configuration, ions and electrons may have adequate density and temperature so that upon collisions they are fused together by nuclear force, thus releasing fusion energy. Moreover, the fusion fuel plasmas that can be used with the present confinement system and method are not limited to neutronic fuels only, but also advantageously include advanced fuels.

  3. Electrode supporting base for electrostatic precipitators

    SciTech Connect (OSTI)

    Honacker, H.

    1981-01-20T23:59:59.000Z

    The disclosure relates to a base for supporting hollow cylindrical and circular in cross section collector electrodes for an electrostatic precipitator. The base comprises a central portion and is generally circular; a plurality of arcuate venturi and collector trough assemblies which are generally circular and which intersect radially disposed drain troughs; said venturi and collector trough assemblies being concentric with said center portion of said base and drain troughs extending radially outward from said center portion; a circular wall structure secured to outer ends of said drain troughs; fixture means for securing said collector electrodes on said drain troughs; uppermost portions of said drain troughs and said venturi and collector troughs being substantially flush with each other and said venturi and collector trough assemblies disposed on a common plane to provide for uniform laminar flow relative to the collector electrodes.

  4. Electrostatic and Magnetic Fields in Bilayer Graphene

    E-Print Network [OSTI]

    Ahmed Jellal; Ilham Redouani; Hocine Bahlouli

    2014-11-14T23:59:59.000Z

    We compute the transmission probability through rectangular potential barriers and p-n junctions in the presence of a magnetic and electric fields in bilayer graphene taking into account the full four bands of the energy spectrum. For energy E higher than the interlayer coupling $\\gamma_1 (E>\\gamma_1)$ two propagation modes are available for transport giving rise to four possible ways for transmission and reflection probabilities. However, when the energy is less then the height of the barrier the Dirac fermions exhibits transmission resonances and only one mode of propagation is available. We study the effect of the interlayer electrostatic potential $\\delta$ and the different geometry parameters of the barrier on the transmission probability.

  5. Detailed Programme Water (Delta Technology and Water Governance) Core Programme 22 EC Effort

    E-Print Network [OSTI]

    Twente, Universiteit

    management' and `River Systems, Water Quality and Marine Systems' are given twice in each year, but are also courses: River Systems, Water Quality and/or Marine Systems 5 EC (2x2,5 EC) Policy instruments - WRS track MB - CSTM track River systems (CTW-WEM 2.5 EC); Water quality (CTW-WEM 2.5 EC); Marine

  6. ELECTROSTATIC MODE ASSOCIATED WITH PINCH VELOCITY IN RFPS

    SciTech Connect (OSTI)

    DELZANNO, GIAN LUCA [Los Alamos National Laboratory; FINN, JOHN M. [Los Alamos National Laboratory; CHACON, LUIS [Los Alamos National Laboratory

    2007-02-08T23:59:59.000Z

    The existence of a new electrostatic instability is shown for RFP (reversed field pinch) equilibria. This mode arises due to the non-zero equilibrium radial flow (pinch flow). In RFP simulations with no-stress boundary conditions on the tangential velocity at the radial wall, this electrostatic mode is unstable and dominates the nonlinear dynamics, even in the presence of the MHD modes typically responsible for the reversal of the axial magnetic field at edge. Nonlinearly, this mode leads to two beams moving azimuthally towards each other, which eventually collide. The electrostatic mode can be controlled by using Dirichlet (no-slip) boundary conditions on the azimuthal velocity at the radial wall.

  7. Surface Plasmon Resonance Imaging Measurements of Electrostatic Biopolymer

    E-Print Network [OSTI]

    Surface Plasmon Resonance Imaging Measurements of Electrostatic Biopolymer Adsorption onto surface plasmon resonance (SPR) imaging experiments is used to charac- terize the differential/RAS) and surface plasmon resonance (SPR) thickness mea- surements. A schematic diagram of the scanning SPR

  8. Conductivity factor in the electrostatic coalescence of crude oil emulsions

    E-Print Network [OSTI]

    Nelson, James B

    1998-01-01T23:59:59.000Z

    parameter on the rate of coalescence. Using previously established procedures, the potential for enhancement of the electrostatic coalescence rate for oil/water emulsions of highly refined oils and different grades of crude oils was explored using a 2-L...

  9. Nanoscale electrostatic actuators in liquid electrolytes: analysis and experiment

    E-Print Network [OSTI]

    Kim, Doyoung

    2006-04-12T23:59:59.000Z

    The objective of this dissertation is to analytically model a parallel plate electrostatic actuator operating in a liquid electrolyte and experimentally verify the analysis. The model assumes the system remains in thermodynamic equilibrium during...

  10. Geometric nonlinear analysis of microbeam under electrostatic loading

    E-Print Network [OSTI]

    Murgude, Nikhil C.

    2001-01-01T23:59:59.000Z

    This study investigates the behavior of a microbeam subjected to electrostatic loading. Two devices, namely, a tungsten microtweezer and a clamped-clamped beam which is part of a micro-electromechanical system (MEMS), are used as the vehicles...

  11. Electrostatic shape-shifting ion optics

    DOE Patents [OSTI]

    Dahl, David A.; Scott, Jill R.; Appelhans, Anthony D.

    2006-05-02T23:59:59.000Z

    Electrostatic shape-shifting ion optics includes an outer electrode that defines an interior region between first and second opposed open ends. A first inner electrode is positioned within the interior region of the outer electrode at about the first open end. A second inner electrode is positioned within the interior region of the outer electrode at about the second open end. A first end cap electrode is positioned at about a first open end of the first inner electrode so that the first end cap electrode substantially encloses the first open end of the first inner electrode. A second end cap electrode is positioned at about a second open end of the second inner electrode so that the second end cap electrode substantially encloses the second open end of the second inner electrode. A voltage source operatively connected to each of the electrodes applies voltage functions to each of the electrodes to produce an electric field within an interior space enclosed by the electrodes.

  12. Electrostatic quadrupole array for focusing parallel beams of charged particles

    DOE Patents [OSTI]

    Brodowski, John (Smithtown, NY)

    1982-11-23T23:59:59.000Z

    An array of electrostatic quadrupoles, capable of providing strong electrostatic focusing simultaneously on multiple beams, is easily fabricated from a single array element comprising a support rod and multiple electrodes spaced at intervals along the rod. The rods are secured to four terminals which are isolated by only four insulators. This structure requires bias voltage to be supplied to only two terminals and eliminates the need for individual electrode bias and insulators, as well as increases life by eliminating beam plating of insulators.

  13. Fast dynamic force computation for electrostatic and electromagnetic conductors

    E-Print Network [OSTI]

    Koteeswaran, Prabhavathi

    2005-02-17T23:59:59.000Z

    FAST DYNAMIC FORCE COMPUTATION FOR ELECTROSTATIC AND ELECTROMAGNETIC CONDUCTORS AThesis by PRABHAVATHI KOTEESWARAN 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 December 2004 Major Subject: Computer Engineering FAST DYNAMIC FORCE COMPUTATION FOR ELECTROSTATIC AND ELECTROMAGNETIC CONDUCTORS AThesis by PRABHAVATHI KOTEESWARAN Submitted to Texas A&M University in partial fulfillment...

  14. Electrostatic Dust Detection and Removal for ITER

    SciTech Connect (OSTI)

    C.H. Skinner; A. Campos; H. Kugel; J. Leisure; A.L. Roquemore; S. Wagner

    2008-09-01T23:59:59.000Z

    We present some recent results on two innovative applications of microelectronics technology to dust inventory measurement and dust removal in ITER. A novel device to detect the settling of dust particles on a remote surface has been developed in the laboratory. A circuit board with a grid of two interlocking conductive traces with 25 ?m spacing is biased to 30 – 50 V. Carbon particles landing on the energized grid create a transient short circuit. The current flowing through the short circuit creates a voltage pulse that is recorded by standard nuclear counting electronics and the total number of counts is related to the mass of dust impinging on the grid. The particles typically vaporize in a few seconds restoring the previous voltage standoff. Experience on NSTX however, showed that in a tokamak environment it was still possible for large particles or fibers to remain on the grid causing a long term short circuit. We report on the development of a gas puff system that uses helium to clear such particles. Experiments with varying nozzle designs, backing pressures, puff durations, and exit flow orientations have given an optimal configuration that effectively removes particles from an area up to 25 cm² with a single nozzle. In a separate experiment we are developing an advanced circuit grid of three interlocking traces that can generate a miniature electrostatic traveling wave for transporting dust to a suitable exit port. We have fabricated such a 3-pole circuit board with 25 micron insulated traces that operates with voltages up to 200 V. Recent results showed motion of dust particles with the application of only 50 V bias voltage. Such a device could potentially remove dust continuously without dedicated interventions and without loss of machine availability for plasma operations.

  15. ME 374C Combustion Engine Processes ABET EC2000 syllabus

    E-Print Network [OSTI]

    Ben-Yakar, Adela

    ME 374C ­ Combustion Engine Processes Page 1 ABET EC2000 syllabus ME 374C ­ Combustion Engine combustion engines, fuels, carburetion, combustion, exhaust emissions, knock, fuel injection, and factors to an appropriate major sequence in engineering. Textbook(s): Internal Combustion Engines and Automotive Engineering

  16. ABET Course Syllabus Spring 2011 EC402 Control Systems Elective

    E-Print Network [OSTI]

    Goldberg, Bennett

    Schedule: LEC: 4 hrs/week (MW 4-6), LAB: (TBA) Textbooks: "Modern Control Systems", 12 th edition, by DorfABET Course Syllabus ­ Spring 2011 EC402 Control Systems Elective Spring 2011 Catalog Data-Hurwitz, root-locus, Bode, and Nyquist techniques. Design and compensation of feedback control systems. Course

  17. ME 343 Thermal-Fluid Systems ABET EC2000 syllabus

    E-Print Network [OSTI]

    Ben-Yakar, Adela

    ) 8. Unsteady thermal system modeling, energy storage 9. Software design and development ClassME 343 ­ Thermal-Fluid Systems Page 1 ABET EC2000 syllabus ME 343 ­ Thermal-Fluid Systems Spring thermal and fluid processes are central to function and performance: thermodynamics of nonreacting

  18. ME 361E Nuclear Reactor Engineering ABET EC2000 syllabus

    E-Print Network [OSTI]

    Ben-Yakar, Adela

    ME 361E ­ Nuclear Reactor Engineering Page 1 ABET EC2000 syllabus ME 361E ­ Nuclear Reactor students should be able to: · Compare and contrast numerous nuclear reactor designs · Calculate the effects of nuclear fuel burnup · Summarize the mechanism that affect the control of a nuclear reactor Topics Covered

  19. ME 349 Corrosion Engineering ABET EC2000 syllabus

    E-Print Network [OSTI]

    Ben-Yakar, Adela

    ME 349 ­ Corrosion Engineering Page 1 ABET EC2000 syllabus ME 349 ­ Corrosion Engineering Spring 2010 Required or Elective: Elective 2008-2010 Catalog Data: Corrosion principles; electrochemical, environmental, and metallurgical effects; types of corrosion; corrosion testing and prevention; modern theories

  20. ME 379M Polymer Nanoparticles ABET EC2000 syllabus

    E-Print Network [OSTI]

    Ben-Yakar, Adela

    ME 379M ­ Polymer Nanoparticles Page 1 ABET EC2000 syllabus ME 379M ­ Polymer Nanoparticles Spring 2010 Required or Elective: Elective 2008-2010 Catalog Data: Course Topics Vary: Polymer Nanoparticles Prerequisite(s): Basic undergraduate level of materials science background Textbook(s): J.H. Koo, Polymer

  1. Syllabus for Ec 122: Econometrics Room: 125 Baxter

    E-Print Network [OSTI]

    Low, Steven H.

    Syllabus for Ec 122: Econometrics Fall, 2013 Room: 125 Baxter Days and Times: Tuesdays and Thursdays, 1 - 2:30pm Required Text: Principles of Econometrics, 4th Edition, Hill, Griffiths, and Lim, Wiley, 2011. Recommended Text: Applied Econometrics in R, Kleiber and Zeileis, Springer, 2008

  2. ue Ce ec o o es o a Energy Efficiency &

    E-Print Network [OSTI]

    phenomena improving MEA and stack performance · Optimize fuel cells and systems for early marketue Ce ec o o es o a Energy Efficiency & Renewable Energy Fuel Cell Bus Workshop Overview and Purppose Dimitrios Papageorgopoulos Fuel Cell Technologgies Proggram DOE and DOT Joint Fuel Cell Bus

  3. ME 339 Heat Transfer ABET EC2000 syllabus

    E-Print Network [OSTI]

    Ben-Yakar, Adela

    ME 339­ Heat Transfer Page 1 ABET EC2000 syllabus ME 339 ­ Heat Transfer Spring 2010 Required convection; radiation; introduction to phase change heat transfer and to heat exchangers. Prerequisite(s): ME, Fundamentals of Heat and Mass Transfer, 6th ed., Wiley Other Required Material: NA Course Objectives

  4. ME 374D Automotive Engineering laboratory ABET EC2000 syllabus

    E-Print Network [OSTI]

    Ben-Yakar, Adela

    . Awareness of contemporary issues in engineering practice, including economic, social, political the ability to: A. Apply principles of engineering, basic science, and mathematics (including multivariateME 374D ­ Automotive Engineering laboratory Page 1 ABET EC2000 syllabus ME 374D ­ Automotive

  5. ME 355K Engineering Vibrations ABET EC2000 syllabus

    E-Print Network [OSTI]

    Ben-Yakar, Adela

    of contemporary issues in engineering practice, including economic, social, political, and environmental issues. Apply principles of engineering, basic science, and mathematics (including multivariate calculusME 355K ­ Engineering Vibrations Page 1 ABET EC2000 syllabus ME 355K ­ Engineering Vibrations

  6. A Performance and Cost Analysis of the Amazon Elastic Compute Cloud (EC2) Cluster Compute Instance

    E-Print Network [OSTI]

    Bjørnstad, Ottar Nordal

    A Performance and Cost Analysis of the Amazon Elastic Compute Cloud (EC2) Cluster Compute Instance the availability of Elastic Compute Cloud (EC2) Cluster Compute Instances specifically designed for high compute power available on demand the question arises if cloud computing with using and Amazon EC2 HPC

  7. Phenomenology of electrostatically charged droplet combustion in normal gravity

    SciTech Connect (OSTI)

    Anderson, Eric K.; Koch, Jeremy A.; Kyritsis, Dimitrios C. [Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801 (United States)

    2008-08-15T23:59:59.000Z

    Experimental findings are provided on the effect of electrostatically charging a fuel on single-burning droplet combustion in normal gravity. It was established that significant modification of the flame morphology and the droplet burning time could be achieved, solely by the droplet charge, without the application of external electric fields. Negative charging of the droplets of mixtures of isooctane with either ethanol or a commercially available anti-static additive generated intense motion of the flame and abbreviated the droplet burning time by as much as 40% for certain blend compositions. Positive charging of the droplets generated almost spherical flames, because electrostatic attraction toward the droplets countered the effect of buoyancy. By comparing combustion of droplets of the same conductivity but different compositions, coupling of electrostatics with combustion chemistry was established. (author)

  8. Oblique propagation of nonlinear electrostatic waves in dense astrophysical magnetoplasmas

    SciTech Connect (OSTI)

    Masood, W.; Siddiq, M. [Theoretical Plasma Physics Division, PINSTECH, P. O. Nilore, Islamabad 54000 (Pakistan); National Centre for Physics (NCP), Shahdara Valley Road, 44000, Islamabad (Pakistan); Rizvi, H. [Theoretical Plasma Physics Division, PINSTECH, P. O. Nilore, Islamabad 54000 (Pakistan)

    2011-10-15T23:59:59.000Z

    Nonlinear quantum ion-acoustic waves in dense dissipative as well as non-dissipative magnetized plasmas are investigated employing the quantum hydrodynamic model. In this regard, Zakharov Kuznetsov Burgers equation is derived in quantum plasmas, for the first time, using the small amplitude perturbation expansion method. The unique features of nonlinear electrostatic structures in pure electron-ion quantum magnetoplasma are highlighted and the parametric domain of the applicability of the model is unequivocally expressed. The present study may be useful to understand the nonlinear propagation characteristics of electrostatic shock and solitary structures in dense astrophysical systems where the quantum effects are expected to dominate.

  9. Chromatin Ionic Atmosphere Analyzed by a Mesoscale Electrostatic Hin Hark Gan

    E-Print Network [OSTI]

    Schlick, Tamar

    Chromatin Ionic Atmosphere Analyzed by a Mesoscale Electrostatic Approach Hin Hark Gan and Tamar an electrostatic model to handle multivalent ions and compute the ionic distribution around a mesoscale chromatin

  10. Situ Discovery Electrostatic Potential, Trapping Electrons and Mediating Fast Reconnection Earth's Magnetotail

    E-Print Network [OSTI]

    Egedal, Jan

    Situ Discovery Electrostatic Potential, Trapping Electrons and Mediating Fast Reconnection Earth phase distributions, measured Wind spacecraft a rare crossing diffusion region in Earth's magnetotail, the presence a strong electrostatic potential within ion diffusion region is revealed. potential reaching

  11. Enhanced electrostatic discrimination of proteins on nanoparticle-coated surfaces

    E-Print Network [OSTI]

    Dubin, Paul D.

    Enhanced electrostatic discrimination of proteins on nanoparticle-coated surfaces Yisheng Xu gold nanoparticle (GNP) modified surface was investigated by atomic force microscopy (AFM) and surface-membrane ultraltration,6 and polyelectrolyte-induced phase separation.7 In recent years, nanoparticles (NP) modied

  12. Frequency-dependent electrostatic actuation in microfluidic MEMS.

    SciTech Connect (OSTI)

    Zavadil, Kevin Robert; Michalske, Terry A.; Sounart, Thomas L.

    2003-09-01T23:59:59.000Z

    Electrostatic actuators exhibit fast response times and are easily integrated into microsystems because they can be fabricated with standard IC micromachining processes and materials. Although electrostatic actuators have been used extensively in 'dry' MEMS, they have received less attention in microfluidic systems probably because of challenges such as electrolysis, anodization, and electrode polarization. Here we demonstrate that ac drive signals can be used to prevent electrode polarization, and thus enable electrostatic actuation in many liquids, at potentials low enough to avoid electrochemistry. We measure the frequency response of an interdigitated silicon comb-drive actuator in liquids spanning a decade of dielectric permittivities and four decades of conductivity, and present a simple theory that predicts the characteristic actuation frequency. The analysis demonstrates the importance of the native oxide on silicon actuator response, and suggests that the actuation frequency can be shifted by controlling the thickness of the oxide. For native silicon devices, actuation is predicted at frequencies less than 10 MHz, in electrolytes of ionic strength up to 100 mmol/L, and thus electrostatic actuation may be feasible in many bioMEMS and other microfluidic applications.

  13. Stray capacitances in the watt balance operation: electrostatic forces

    E-Print Network [OSTI]

    Quagliotti, Danilo

    2014-01-01T23:59:59.000Z

    In a watt balance, stray capacitances exist between the coil and the magnet. Since the electric current flowing in the coil originates a difference between the coil and magnet electric-potentials, their electrostatic interactions must be taken into account. This paper reports the results of a finite element analysis of the forces acting on the coil.

  14. Experiment for Plasma Energization with Beating Electrostatic Waves

    E-Print Network [OSTI]

    Choueiri, Edgar

    Experiment for Plasma Energization with Beating Electrostatic Waves IEPC-2009-199 Presented September 20­24, 2009 Benjamin Jorns and Edgar Y. Choueiri Electric Propulsion and Plasma Dynamics Laboratory, Princeton University, Princeton, NJ, 08540 An experimental study of plasma heating by means

  15. Electrostatic Interchange Instabilities of a Rotating, High-Temperature Plasma

    E-Print Network [OSTI]

    Mauel, Michael E.

    Electrostatic Interchange Instabilities of a Rotating, High-Temperature Plasma Confined by a Dipole #2 Mach Probe #1 Mach Probe #2 High-field, 0.2 MA-turn Water-cooled Magnet #12;Interchange Modes-sized/global... Fast hot electron interchange instability: drift-resonant transport; Gryokinetics; phase-space holes

  16. Electrostatic Control of Ions and Molecules in Nanofluidic Transistors

    E-Print Network [OSTI]

    Yang, Peidong

    Electrostatic Control of Ions and Molecules in Nanofluidic Transistors Rohit Karnik,,| Rong Fan report a nanofluidic transistor based on a metal-oxide-solution (MOSol) system that is similar to a metal the ionic conductance. Our results illustrate the efficacy of field-effect control in nanofluidics, which

  17. Study on plasma parameters and dust charging in an electrostatically plugged multicusp plasma device

    SciTech Connect (OSTI)

    Kakati, B.; Kausik, S. S.; Saikia, B. K. [Centre of Plasma Physics, Institute for Plasma Research, Nazirakhat, Sonapur-782 402, Kamrup, Assam (India); Bandyopadhyay, M. [ITER-India, Institute for Plasma Research, Bhat, Gandhinagar- 382 428 (India)

    2011-06-15T23:59:59.000Z

    The effect of the electrostatic confinement potential on the charging of dust grains and its relationship with the plasma parameters has been studied in an electrostatically plugged multicusp dusty plasma device. Electrostatic plugging is implemented by biasing the electrically isolated magnetic multicusp channel walls. The experimental results show that voltage applied to the channel walls can be a controlling parameter for dust charging.

  18. Evaluation of Models of Electrostatic Interactions in Proteins Alexandre V. Morozov, Tanja Kortemme, and David Baker*,

    E-Print Network [OSTI]

    Morozov, Alexandre V.

    -protein complexes observed in nature must be low in free energy relative to alternative (not observed) conformations alternative models of electrostatic interactions in proteins by comparing the electrostatic free energies, and it is plausible (but not absolutely necessary) that the electrostatic free energies of experimentally observed

  19. ENG ME/EC/SE 701: Optimal and robust control Fall 2011 ENG ME/EC/SE 701: Optimal and Robust Control, Fall 2011

    E-Print Network [OSTI]

    emphases given on the optimal control portion. Under optimal control, topics will include the linear-domain (or classical) control (at the level of ME 404) and linear system theory (at the level of ME 501ENG ME/EC/SE 701: Optimal and robust control Fall 2011 ENG ME/EC/SE 701: Optimal and Robust Control

  20. Approved Module Information for EC307C, 2014/5 Module Title/Name: Green Building Module Code: EC307C

    E-Print Network [OSTI]

    Neirotti, Juan Pablo

    Approved Module Information for EC307C, 2014/5 Module Title/Name: Green Building Module Code: EC307 construction; * Conventional and novel materials appropriate for green building; Professional Module Learning Information Module Aims: By building on previous knowledge and experience, to develop

  1. ENG EC/ME/SE 543 Sustainable Power Systems Page 1/5 ENG EC/ME/SE 543 Sustainable Power Systems: Planning, Operation, and Markets

    E-Print Network [OSTI]

    Lin, Xi

    ENG EC/ME/SE 543 Sustainable Power Systems Page 1/5 Syllabus ENG EC/ME/SE 543 Sustainable Power considers key technical and economic characteristics of power systems and presents their interaction.e., the safeguard of security and stability in today's complex power systems. Course Overview We review the key

  2. ENG EC/ME/SE 543 Sustainable Power Systems Page 1/4 ENG EC/ME/SE 543 Sustainable Power Systems: Planning, Operation, and Markets

    E-Print Network [OSTI]

    ENG EC/ME/SE 543 Sustainable Power Systems Page 1/4 Syllabus ENG EC/ME/SE 543 Sustainable Power of power systems and presents their interaction in the design and operation of markets that foster's complex power systems. Course Overview We review the key characteristics of Electric Power Transmission

  3. ENG EC/ME/SE 543 Sustainable Power Systems Page 1/5 ENG EC/ME/SE 543 Sustainable Power Systems: Planning, Operation, and Markets

    E-Print Network [OSTI]

    ENG EC/ME/SE 543 Sustainable Power Systems Page 1/5 Syllabus ENG EC/ME/SE 543 Sustainable Power. Under this premise, the course considers key technical and economic characteristics of power systems efficiency while allowing for the safeguard of security and stability in today's complex power systems

  4. ENG EC/ME/SE 543 Sustainable Power Systems Page 1/5 ENG EC/ME/SE 543 Sustainable Power Systems: Planning, Operation, and Markets

    E-Print Network [OSTI]

    ENG EC/ME/SE 543 Sustainable Power Systems Page 1/5 Syllabus ENG EC/ME/SE 543 Sustainable Power of power systems and presents their interaction in the design and operation of markets that foster systems. Course Overview We review the key characteristics of Electric Power Transmission and Distribution

  5. Class Title Instructor Day Start Stop Instructor Class ENG EC311 A1 Intr Log Design Karpovsky Mon,Wed 12:00pm 2:00pm Bellotti ENG EC575 A1

    E-Print Network [OSTI]

    Vlsi Cir Des Hubbard Mon,Wed 12:00pm 2:00pm Knepper ENG EC582 A1 ENG EC573 A1 Solar Enrgy Sys Mazumder Mon,Wed 12:00pm 2:00pm Konrad ENG EC720 A1 ENG EC573 DL Solar Enrgy Sys Mazumder Mon,Wed 12:00pm 2

  6. SSRLUO-EC Minutes 5-23-01

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's PossibleRadiation Protection245C Unlimited ReleaseWelcome ton n u May 23, 2001 SSRLUO-EC Contact

  7. Effects of Nonaqueous Electrolytes on Primary Li-Air Batteries

    SciTech Connect (OSTI)

    Xu, Wu; Xiao, Jie; Wang, Deyu; Zhang, Jian; Zhang, Jiguang

    2010-06-14T23:59:59.000Z

    The effects of nonaqueous electrolytes on the performance of primary Li-air batteries operated in dry air environment have been investigated. Organic solvents with low volatility and low moisture absorption are necessary to minimize the change of electrolyte compositions and the reaction between Li anode and water during the discharge process. The polarity of aprotic solvents outweighs the viscosity, ion conductivity and oxygen solubility on the performance of Li-air batteries once these latter properties attain certain reasonable level, because the solvent polarity significantly affects the number of tri-phase regions formed by oxygen, electrolyte, and active carbons (with catalyst) in the air electrode. The most feasible electrolyte formulation is the system of LiTFSI in PC/EC mixtures, whose performance is relatively insensitive to PC/EC ratio and salt concentration. The quantity of such electrolyte added to a Li-air cell has notably effects on the discharge performance of the Li-air battery as well, and a maximum in capacity is observed as a function of electrolyte amount. The coordination effect from the additives or co-solvents [tris(pentafluorophenyl)borane and crown ethers in this study] also greatly affects the discharge performance of a Li-air battery.

  8. Apparatus for magnetic and electrostatic confinement of plasma

    DOE Patents [OSTI]

    Rostoker, Norman; Binderbauer, Michl

    2006-10-31T23:59:59.000Z

    An apparatus and method for containing plasma and forming a Field Reversed Configuration (FRC) magnetic topology are described in which plasma ions are contained magnetically in stable, non-adiabatic orbits in the FRC. Further, the electrons are contained electrostatically in a deep energy well, created by tuning an externally applied magnetic field. The simultaneous electrostatic confinement of electrons and magnetic confinement of ions avoids anomalous transport and facilitates classical containment of both electrons and ions. In this configuration, ions and electrons may have adequate density and temperature so that upon collisions they are fused together by nuclear force, thus releasing fusion energy. Moreover, the fusion fuel plasmas that can be used with the present confinement system and method are not limited to neutronic fuels only, but also advantageously include advanced fuels.

  9. Apparatus for magnetic and electrostatic confinement of plasma

    DOE Patents [OSTI]

    Rostoker, Norman; Binderbauer, Michl

    2006-04-11T23:59:59.000Z

    An apparatus and method for containing plasma and forming a Field Reversed Configuration (FRC) magnetic topology are described in which plasma ions are contained magnetically in stable, non-adiabatic orbits in the FRC. Further, the electrons are contained electrostatically in a deep energy well, created by tuning an externally applied magnetic field. The simultaneous electrostatic confinement of electrons and magnetic confinement of ions avoids anomalous transport and facilitates classical containment of both electrons and ions. In this configuration, ions and electrons may have adequate density and temperature so that upon collisions they are fused together by nuclear force, thus releasing fusion energy. Moreover, the fusion fuel plasmas that can be used with the present confinement system and method are not limited to neutronic fuels only, but also advantageously include advanced fuels.

  10. Apparatus for magnetic and electrostatic confinement of plasma

    DOE Patents [OSTI]

    Rostoker, Norman; Binderbauer, Michl

    2013-06-11T23:59:59.000Z

    An apparatus and method for containing plasma and forming a Field Reversed Configuration (FRC) magnetic topology are described in which plasma ions are contained magnetically in stable, non-adiabatic orbits in the FRC. Further, the electrons are contained electrostatically in a deep energy well, created by tuning an externally applied magnetic field. The simultaneous electrostatic confinement of electrons and magnetic confinement of ions avoids anomalous transport and facilitates classical containment of both electrons and ions. In this configuration, ions and electrons may have adequate density and temperature so that upon collisions ions are fused together by nuclear force, thus releasing fusion energy. Moreover, the fusion fuel plasmas that can be used with the present confinement system and method are not limited to neutronic fuels only, but also advantageously include advanced fuels.

  11. Electrostatic dispersion lenses and ion beam dispersion methods

    DOE Patents [OSTI]

    Dahl, David A. (Idaho Falls, ID) [Idaho Falls, ID; Appelhans, Anthony D. (Idaho Falls, ID) [Idaho Falls, ID

    2010-12-28T23:59:59.000Z

    An EDL includes a case surface and at least one electrode surface. The EDL is configured to receive through the EDL a plurality of ion beams, to generate an electrostatic field between the one electrode surface and either the case surface or another electrode surface, and to increase the separation between the beams using the field. Other than an optional mid-plane intended to contain trajectories of the beams, the electrode surface or surfaces do not exhibit a plane of symmetry through which any beam received through the EDL must pass. In addition or in the alternative, the one electrode surface and either the case surface or the other electrode surface have geometries configured to shape the field to exhibit a less abrupt entrance and/or exit field transition in comparison to another electrostatic field shaped by two nested, one-quarter section, right cylindrical electrode surfaces with a constant gap width.

  12. Photon induced tunneling of electron through a graphene electrostatic barrier

    SciTech Connect (OSTI)

    Biswas, R. [Department of Physics, P.K. College, Contai, Purba Medinipur, West Bengal 721401 (India)] [Department of Physics, P.K. College, Contai, Purba Medinipur, West Bengal 721401 (India); Sinha, C. [Department of Theoretical Physics, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032 (India)] [Department of Theoretical Physics, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032 (India)

    2013-11-14T23:59:59.000Z

    The influence of an external intense laser field on the tunneling transport (ballistic) of the Dirac fermions through a monolayer graphene electrostatic barrier is studied in the framework of the Floquet approach for a continuous wave, linearly polarized, monochromatic laser. The Klein tunneling is shown to be suppressed by the irradiation of a strong laser field, arising due to breaking of chiral symmetry. The symmetric nature of the field free angular transmission spectrum around the normal to the well-barrier interface is destroyed due to the additional coupling between the pseudo-spin and the time dependent vector potential. The energy distribution of the tunneling spectrum displays Fano resonance which is absent for a laser assisted conventional electrostatic barrier but similar to the case of quantum well structures, providing an optical tool to identify field free quasi bound states inside the graphene nanostructures.

  13. Energy conservation in electrostatic fabric filtration of industrial dust

    SciTech Connect (OSTI)

    Ariman, T.

    1981-12-01T23:59:59.000Z

    Conservation in energy consumption in industrial fabric filtration systems has become very important due to the substantial increase in energy costs. Recently, an external electric field was utilized in the industrial dust control by fabric filters with very promising initial results. A substantial decrease in the pressure drop and an increase in collection efficiency were observed. The detailed outcome of the experimental research program in electrostatic fabric filtration was presented. The results show that pressure drop decreases substantially with the increased electrostatic field strength for all relevant parameters. Furthermore, the data of the experimental program was utilized to develop a semi-empirical model for the determination of the pressure drop and to establish an Energy-Optimized Design Criteria.

  14. Ion pump activity generates fluctuating electrostatic forces in biomembranes

    E-Print Network [OSTI]

    B. Loubet; M. A. Lomholt

    2011-09-19T23:59:59.000Z

    We study the non-equilibrium dynamics of lipid membranes with proteins that actively pump ions across the membrane. We find that the activity leads to a fluctuating force distribution due to electrostatic interactions arising from variation in dielectric constant across the membrane. By applying a multipole expansion we find effects on both the tension and bending rigidity dominated parts of the membranes fluctuation spectrum. We discuss how our model compares with previous studies of force-multipole models.

  15. Electrostatic waves in carbon nanotubes with an axial magnetic field

    SciTech Connect (OSTI)

    Abdikian, Alireza [Department of Physics, Malayer University, Malayer 65719-95863 (Iran, Islamic Republic of)] [Department of Physics, Malayer University, Malayer 65719-95863 (Iran, Islamic Republic of); Bagheri, Mehran [Laser and Plasma Research Institute, Shahid Beheshti University, G. C., Evin, Tehran 19835-63113 (Iran, Islamic Republic of)] [Laser and Plasma Research Institute, Shahid Beheshti University, G. C., Evin, Tehran 19835-63113 (Iran, Islamic Republic of)

    2013-10-15T23:59:59.000Z

    Based on a linearized hydrodynamic model and within the quasi-static approximation, the dispersion relation of electrostatic waves propagating through single-walled carbon nanotubes subject to an axial magnetic field is theoretically explored. In the classical limit, we obtain two main possible waves which in turn are divided into two branches, a low-frequency acoustical and a high-frequency optical plasmon branch. In the quantum case, we have found that the dispersion relation is substantially modified when the electron wavelength becomes large enough compared to the propagation wavelength of the electrostatic waves in the quantum plasma. We also show that the axial magnetic field manifest itself on the perturbed electron density through the quantum term and gives rise to the propagation of the electrostatic waves within the quantum plasma. As a result, the effect of the magnetic field is pronounced in the plasma dispersion relations in such a way that their curves approach to zero when the magnetic field is weak; and for the strong magnetic field, they asymptotically meet the constant lines.

  16. Cyclophilin A catalyzes proline isomerization by an electrostatic handle mechanism

    SciTech Connect (OSTI)

    Camilloni, Carlo; Sahakyan, Aleksander B.; Holliday, Michael; Isern, Nancy G.; Zhang, Fengli; Eisenmesser, Elan Z.; Vendruscolo, Michele

    2014-07-15T23:59:59.000Z

    Proline isomerization is a ubiquitous process that plays a key role in the folding of proteins and in the regulation of their functions1-3. Different families of enzymes, known as peptidyl-prolyl isomerases (PPIases), catalyse this reaction, which involves the interconversion between the cis and trans isomers of the Nterminal amide bond of the amino acid proline2,3. A complete description of the mechanisms by which these enzymes function, however, has remained elusive. Here, we show that cyclophilin A, one of the most common PPIases4, provides a catalytic environment that acts on the substrate through an electrostatic lever mechanism. In this mechanism, the electrostatic field in the catalytic site turns the electric dipole associated with the carboxylic group of the amino acid preceding the proline in the substrate, thus causing the rotation of the peptide bond between the two residues. This mechanism resulted from the analysis of an ensemble of conformations populated by cyclophilin A during the enzymatic reaction using a combination of NMR measurements, molecular dynamics simulations and density functional theory calculations. We anticipate that this approach will be helpful in elucidating whether the electrostatic lever mechanism that we describe is common to other PPIases, and more generally to characterise other enzymatic processes.

  17. EC-Earth = IFS + NEMO + LIM "CMIP5 version" (v2.3)

    E-Print Network [OSTI]

    Haak, Hein

    EC-Earth = IFS + NEMO + LIM "CMIP5 version" (v2.3) IFS T159L62 (cycle 31r1 + enhancements) OASIS ORCA1/L46 (or ORCA025) #12;20.03.2013 A. Sterl - NL EC-Earth day #12;20.03.2013 A. Sterl - NL EC-Earth day Imbalance: 0.135 W/m2 GHG forcing: 0.5-1 W/m2 #12;20.03.2013 A. Sterl - NL EC-Earth day T

  18. Completion Report for Well ER-EC-1

    SciTech Connect (OSTI)

    Townsend, M.J.

    2000-12-01T23:59:59.000Z

    Well ER-EC-1 was drilled for the U.S. Department of Energy, Nevada Operations Office in support of the Nevada Environmental Restoration Project at the Nevada Test Site, Nye County, Nevada. This well was drilled in the spring of 1999 as part of the U.S. Department of Energy's hydrogeologic investigation well program in the Western Pahute Mesa - Oasis Valley region just west of the Test Site. A 44.5-centimeter surface hole was drilled and cased off to the depth 675.1 meters below the surface. The hole diameter was then decreased to 31.1 centimeters for drilling to a total depth of 1,524.0 meters. A preliminary composite, static, water level was measured at the depth of approximately 566.3 meters prior to installation of the completion string. One completion string with three isolated, slotted intervals was installed in the well. Detailed lithologic descriptions with preliminary stratigraphic assignments are included in the report. These are based on composite drill cuttings collected every 3 meters and 31 sidewall samples taken at various depths below 680 meters, supplemented by geophysical log data. Detailed chemical and mineralogical studies of rock samples are in progress. The well penetrated Tertiary-age lava and tuff of the Timber Mountain Group, the Paintbrush Group, the Calico Hills Formation, the Crater Flat Group, and the Volcanics of Quartz Mountain. The preliminary geologic interpretation of data from Well ER-EC-1 indicates the presence of a structural trough or bench filled with a thick section of post-Rainier Mesa lava. These data also suggest that this site is located on a buried structural ridge that may separate the Silent Canyon and Timber Mountain caldera complexes.

  19. Data:22570d90-38ec-4589-8f33-f878ec21de11 | Open Energy Information

    Open Energy Info (EERE)

    ec21de11 No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2....

  20. Air Quality: Construction Project Air Permit Requirements

    E-Print Network [OSTI]

    Wechsler, Risa H.

    Air Quality: Construction Project Air Permit Requirements Department: Chemical and General Safety Program: Air Quality Owner: Program Manager Authority: ES&H Manual, Chapter 30, Air Quality1 All manager or operator must submit the completed form to the air quality program manager before the project

  1. UMBC Training Centers Partners with EC-Council, to Deliver Online Cybersecurity Training Programs

    E-Print Network [OSTI]

    Maryland, Baltimore County, University of

    UMBC Training Centers Partners with EC-Council, to Deliver Online Cybersecurity Training Programs "iClasses offer Students the option of live, instructor lead online security training virtually anywhere with access to the internet." March 21, 2011 - UMBC Training Centers, long time partner of the EC

  2. (Acts whose publication is obligatory) COUNCIL REGULATION (EC) No 1504/2004

    E-Print Network [OSTI]

    Sussex, University of

    amending and updating Regulation (EC) No 1334/2000 setting up a Community regime for the control of exports referred to in Article 3 of that Regulation, which implements internationally agreed dual-use controls to in Article 3 of Regulation (EC) No 1334/2000) This list implements internationally agreed dual-use controls

  3. E-Print Network 3.0 - analysis electrostatic accelerator Sample...

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

    ; Biology and Medicine 2 Fly-Casting in Protein-DNA Binding: Frustration between Protein Folding and Electrostatics Facilitates Target Recognition Summary: Fly-Casting in...

  4. Electrostatic self-energy in static black holes with spherical symmetry

    E-Print Network [OSTI]

    B. Linet

    2000-06-28T23:59:59.000Z

    We determine the expression of the electrostatic self-energy for a point charge in the static black holes with spherical symmetry having suitable properties

  5. Air Pollution (Illinois)

    Broader source: Energy.gov [DOE]

    This article states regulations for monitoring air pollution, methods for permit applications, emission limitations for pollutants and air quality standards.

  6. Modifications of Microvascular EC Surface Modulate Phototoxicity of a Porphycene anti-ICAM-1 Immunoconjugate; Therapeutic Implications

    E-Print Network [OSTI]

    Duran-Frigola, Miquel

    Inflammation and shear stress can upregulate expression of cellular adhesion molecules in endothelial cells (EC). The modified EC surface becomes a mediating interface between the circulating blood elements and the ...

  7. Electrostatic rogue-waves in relativistically degenerate plasmas

    SciTech Connect (OSTI)

    Akbari-Moghanjoughi, M. [Department of Physics, Faculty of Sciences, Azarbaijan Shahid Madani University, 51745-406 Tabriz, Iran and International Centre for Advanced Studies in Physical Sciences and Institute for Theoretical Physics, Ruhr University Bochum, D-44780 Bochum (Germany)

    2014-10-15T23:59:59.000Z

    In this paper, we investigate the modulational instability and the possibility of electrostatic rogue-wave propagations in a completely degenerate plasma with arbitrary degree of degeneracy, i.e., relativistically degenerate plasma, ranging from solid density to the astrophysical compact stars. The hydrodynamic approach along with the perturbation method is used to reduce the governing equations to the nonlinear Schrödinger equation from which the modulational instability, the growth rate of envelope excitations and the occurrence of rogue as well as super-rogue waves in the plasma, is evaluated. It is observed that the modulational instability in a fully degenerate plasma can be quite sensitive to the plasma number-density and the wavenumber of envelop excitations. It is further revealed that the relativistically degeneracy plasmas (R{sub 0}?>?1) are almost always modulationally unstable. It is found, however, that the highly energetic sharply localized electrostatic rogue as well as super-rogue waves can exist in the astrophysical compact objects like white dwarfs and neutron star crusts. The later may provide a link to understand many physical processes in such stars and it may lead us to the origin of the random-localized intense short gamma-ray bursts, which “appear from nowhere and disappear without a trace” quite similar to oceanic rogue structures.

  8. Electrostatics-driven shape transitions in soft shells

    E-Print Network [OSTI]

    Vikram Jadhao; Creighton K. Thomas; Monica Olvera de la Cruz

    2014-09-12T23:59:59.000Z

    Manipulating the shape of nanoscale objects in a controllable fashion is at the heart of designing materials that act as building blocks for self-assembly or serve as targeted drug delivery carriers. Inducing shape deformations by controlling external parameters is also an important way of designing biomimetic membranes. In this paper, we demonstrate that electrostatics can be used as a tool to manipulate the shape of soft, closed membranes by tuning environmental conditions such as the electrolyte concentration in the medium. Using a molecular dynamics-based simulated annealing procedure, we investigate charged elastic shells that do not exchange material with their environment, such as elastic membranes formed in emulsions or synthetic nanocontainers. We find that by decreasing the salt concentration or increasing the total charge on the shell's surface, the spherical symmetry is broken, leading to the formation of ellipsoids, discs, and bowls. Shape changes are accompanied by a significant lowering of the electrostatic energy and a rise in the surface area of the shell. To substantiate our simulation findings, we show analytically that a uniformly charged disc has a lower Coulomb energy than a sphere of the same volume. Further, we test the robustness of our results by including the effects of charge renormalization in the analysis of the shape transitions and find the latter to be feasible for a wide range of shell volume fractions.

  9. Electrostatic spherically symmetric configurations in gravitating nonlinear electrodynamics

    SciTech Connect (OSTI)

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

    2010-03-15T23:59:59.000Z

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

  10. Thermal stability of LiPF6EC:EMC electrolyte for lithium ion batteries Gerardine G. Bottea

    E-Print Network [OSTI]

    Thermal stability of LiPF6±EC:EMC electrolyte for lithium ion batteries Gerardine G. Bottea , Ralph study of the LiPF6±EC:EMC electrolyte. The effect of different variables on its thermal stability was evaluated: salt (LiPF6) concentration effect, solvents, EC:EMC ratios, and heating rates. Hermetically

  11. Low frequency electrostatic and electromagnetic modes in nonuniform cold quantum plasmas

    SciTech Connect (OSTI)

    Saleem, H.; Ahmad, Ali [Theoretical Plasma Physics Division, Pakistan Institute of Nuclear Science and Technology (PINSTECH), Islamabad (Pakistan); Department of Physics, COMSATS Institute of Information Technology (CIIT), Islamabad (Pakistan); Khan, S. A. [Department of Physics, COMSATS Institute of Information Technology (CIIT), Islamabad (Pakistan); Department of Physics, Government College Bagh AJK (Pakistan)

    2008-01-15T23:59:59.000Z

    The low frequency electrostatic and electromagnetic linear modes in a nonuniform cold quantum electron-ion plasma are studied. The effect of stationary dust on an electrostatic mode is also investigated. The quantum corrections in the linear dispersion relations of a cold dense plasma are presented with possible applications.

  12. Design of an Experiment to Optimize Plasma Energization by Beating Electrostatic Waves

    E-Print Network [OSTI]

    Choueiri, Edgar

    Design of an Experiment to Optimize Plasma Energization by Beating Electrostatic Waves B. Jorns and E.Y. Choueiri Electric Propulsion and Plasma Dynamics Laboratory, Princeton University, Princeton and amplitude dependence of the heating of a magnetized plasma with beating electrostatic waves is discussed

  13. Do Electrostatic Interactions Destabilize ProteinNucleic Acid Binding? Sanbo Qin,1

    E-Print Network [OSTI]

    Weston, Ken

    interaction energies between proteins and nucleic acids are positive, meaning that electrostatic interactions as the boundary between the solute low dielectric and the solvent dielectric. We have explored an alternative choice, i.e., the van der Waals (vdW) surface, and found that the electrostatic interaction energy

  14. Electrostatics in a Schwarzschild black hole pierced by a cosmic string

    E-Print Network [OSTI]

    B. Linet

    1999-04-19T23:59:59.000Z

    We explicitly determine the expression of the electrostatic potential generated by a point charge at rest in the Schwarzschild black hole pierced by a cosmic string. We can then calculate the electrostatic self-energy. From this, we find again the upper entropy bound for a charged object by employing thermodynamics of the black hole.

  15. Improving Particle Confinement in Inertial Electrostatic Fusion for Spacecraft Power and

    E-Print Network [OSTI]

    Improving Particle Confinement in Inertial Electrostatic Fusion for Spacecraft Power and Propulsion Electrostatic Fusion for Spacecraft Power and Propulsion By Carl C. Dietrich Fusion energy is attractive for use for power supplies and magnets, in the case of magnetic confinement, or capacitors and lasers in the case

  16. Completion Report for Well ER-EC-2A

    SciTech Connect (OSTI)

    M. J. Townsend

    2002-03-01T23:59:59.000Z

    Well ER-EC-2A was drilled for the U.S. Department of Energy, National Nuclear Security Administration Nevada Operations Office, in support of the Nevada Environmental Restoration Project at the Nevada Test Site, Nye County, Nevada. This well was drilled in January and February of 2000 as part of a hydrogeologic investigation program in the Pahute Mesa - Oasis Valley region just west of the Nevada Test Site. A 44.5-centimeter surface hole was drilled and cased off to a depth of 412.9 meters below the surface. The hole diameter was then decreased to 31.1 centimeters for drilling to a total depth of 1,516.1 meters. One completion string with three isolated slotted intervals was installed in the well. A preliminary composite, static water level was measured at the depth of 228.0 meters, approximately two months after installation of the completion string. Detailed lithologic descriptions with preliminary stratigraphic assignments are included in this report. These are based on composite drill cuttings collected every 3 meters, and 81 sidewall samples taken at various depths below 212 meters, supplemented by geophysical log data. Detailed petrographic, chemical, and mineralogical studies of rock samples were conducted on 30 samples. The well was collared in rhyolite lava and penetrated Tertiary-age lava and tuff of the Volcanics of Fortymile Canyon and the Timber Mountain Group. The preliminary geologic interpretation of borehole data indicates that this well was drilled within the margins of the buried Rainier Mesa and Ammonia Tanks calderas, and that caldera collapse in this area was deeper than expected, resulting in a section of Volcanics of Fortymile Canyon (caldera-filling deposit) that is much thicker than expected.

  17. Completion Report for Well ER-EC-4

    SciTech Connect (OSTI)

    M. J. Townsend

    2000-09-01T23:59:59.000Z

    Well ER-EC-4 was drilled for the US Department of Energy, Nevada Operations Office in support of the Nevada Environmental Restoration Project at the Nevada Test Site, Nye County, Nevada. This well was drilled in the summer of 1999 as part of the U.S Department of Energy's hydrogeologic investigation well program in the Western Pahute Mesa - Oasis Valley region just west of the Test Site. A 44.5-centimeter surface hole was drilled and cased off to a depth of 263.7 meters below the surface. The hole diameter was then decreased to 31.1 centimeters for drilling to a total depth of 1,062.8 meters. One completion string with three isolated slotted intervals was installed in the well. A preliminary composite, static, water level was measured at the depth of 228.3 meters, two months after installation of the completion string. Detailed lithologic descriptions with preliminary stratigraphic assignments are included in the report. These are based on composite drill cuttings collected every 3 meters, and 35 sidewall samples taken at various depths below 286.5 meters, supplemented by geophysical log data. Detailed chemical and mineralogical studies of rock samples are in progress. The well was collared in basalt and penetrated Tertiary-age lava and tuff of the Thirsty Canyon Group, the Volcanics of Fortymile Canyon, and the Timber Mountain Group. The preliminary geologic interpretation of data from this well helps pinpoint the location of the western margin of the Timber Mountain caldera complex in the southern Nevada volcanic field.

  18. Completion Report for Well ER-EC-5

    SciTech Connect (OSTI)

    Bechtel Nevada

    2004-10-01T23:59:59.000Z

    Well ER-EC-5 was drilled for the U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office in support of the Nevada Environmental Restoration Project at the Nevada Test Site, Nye County, Nevada. This well was drilled in the summer of 1999 as part of the U.S. Department of Energy's hydrogeologic investigation program in the Western Pahute Mesa - Oasis Valley region just west of the Nevada Test Site. A 44.5-centimeter surface hole was drilled and cased off to a depth of 342.6 meters below ground surface. The borehole diameter was then decreased to 31.1 centimeters for drilling to a total depth of 762.0 meters. One completion string with three isolated slotted intervals was installed in the well. A preliminary composite, static water level was measured at the depth of 309.9 meters, 40 days after installation of the completion string. Detailed lithologic descriptions with stratigraphic assignments are included in the report. These are based on composite drill cuttings collected every 3 meters, and 18 sidewall samples taken at various depths below 349.6 meters, supplemented by geophysical log data and results from detailed chemical and mineralogical analyses of rock samples. The well penetrated Tertiary-age tuffs of the Thirsty Canyon Group, caldera moat-filling sedimentary deposits, lava of the Beatty Wash Formation, and landslide breccia and tuffs of the Timber Mountain Group. The well reached total depth in welded ashflow tuff of the Ammonia Tanks Tuff after penetrating 440.1 meters of this unit, which is also the main water-producing unit in the well. The geologic interpretation of data from this well constrains the western margin of the Ammonia Tanks caldera to the west of the well location.

  19. Completion report for Well ER-EC-6

    SciTech Connect (OSTI)

    M. J. Townsend

    2000-05-01T23:59:59.000Z

    Well ER-EC-6 was drilled for the U.S. Department of Energy, Nevada Operations Office in support of the Nevada Environmental Restoration Project at the Nevada Test Site, Nye County, Nevada. This well was drilled in the spring of 1999 as part of the DOE's hydrogeologic investigation well program in the Western Pahute Mesa - Oasis Valley region just west of the Nevada Test Site. A 66-centimeter surface hole was drilled and cased off to the depth of 485.1 meters below the surface. The hole diameter was then decreased to 31.1 centimeters for drilling to a total depth of 1,524.0 meters. A preliminary composite, static, water level was measured at the depth of approximately 434.6 meters prior to installation of the completion string. One completion string with four isolated, slotted intervals was installed in the well. Detailed lithologic descriptions with preliminary stratigraphic assignments are included in the report. These are based on composite drill cuttings collected every 3 meters and 33 sidewall samples taken at various depths below 504.4 meters, supplemented by geophysical log data. Detailed chemical and mineralogical studies of rock samples are in progress. The well penetrated Tertiary-age lava and tuff of the Timber Mountain Group, the Paintbrush Group, the Calico Hills Formation, and the Volcanics of Quartz Mountain. Intense hydrothermal alteration was observed below the depth of 640 m. The preliminary geologic interpretation indicates that this site may be located on a buried structural ridge that separates the Silent Canyon and Timber Mountain caldera complexes.

  20. Completion Report for Well ER-EC-7

    SciTech Connect (OSTI)

    Bechtel Nevada

    2004-10-01T23:59:59.000Z

    Well ER-EC-7 was drilled for the U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office in support of the Nevada Environmental Restoration Project at the Nevada Test Site, Nye County, Nevada. This well was drilled in the summer of 1999 as part of the Department of Energy's hydrogeologic investigation program in the Western Pahute Mesa - Oasis Valley region just west of the Test Site. A 44.5-centimeter surface hole was drilled and cased off to a depth of 265.8 meters below the surface. The hole diameter was then decreased to 31.1 centimeters for drilling to a total depth of 422.5 meters. The planned depth of 762 meters was not reached due to borehole stability problems. One completion string with two isolated slotted intervals was installed in the well. A preliminary composite, static, water level was measured at the depth of 227.8 meters, 20 days after installation of the completion string. Detailed lithologic descriptions with stratigraphic assignments are included in the report. These are based on composite drill cuttings, supplemented by geophysical log data, and incorporating data from detailed chemical and mineralogical studies of rock samples. Beneath a thin alluvial deposit, the well penetrated 410 meters of lava and bedded tuff of the Volcanics of Fortymile Canyon Group, deposited in the Timber Mountain caldera moat after caldera collapse. The geologic interpretation of data from this well provides information on the thickness, lithologic composition, and hydrogeologic character of moat-filling rocks in the southern portion of the Timber Mountain caldera complex in the southwestern Nevada volcanic field.

  1. Completion Report for Well ER-EC-8

    SciTech Connect (OSTI)

    Bechtel Nevada

    2004-10-01T23:59:59.000Z

    Well ER-EC-8 was drilled for the U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office in support of the Nevada Environmental Restoration Project at the Nevada Test Site, Nye County, Nevada. This well was drilled in the summer of 1999 as part of the U.S. Department of Energy's hydrogeologic investigation program in the Western Pahute Mesa - Oasis Valley region just west of the Nevada Test Site. A 44.5-centimeter surface hole was drilled and cased off to a depth of 129.8 meters below the surface. The hole diameter was then decreased to 31.1 centimeters for drilling to a total depth of 609.6 meters. One completion string with three isolated slotted intervals was installed in the well. A preliminary composite, static water level was measured at the depth of 98.4 meters, 24 days after installation of the completion string. Detailed lithologic descriptions with stratigraphic assignments are included in the report. These are based on evaluation of composite drill cuttings collected every 3 meters, and 20 sidewall samples taken at various depths below 157.9 meters, supplemented by geophysical log data and results of detailed chemical and mineralogical studies of rock samples. Drilling began in Tertiary-age tuff of the Thirsty Canyon Group, and penetrated tuffs of the Beatty Wash Formation, tuff of Buttonhook Wash, and the upper portion of the Ammonia Tanks Tuff. The geologic interpretation of data from this well helps define the location of the western margin of the Timber Mountain caldera complex in the southwestern Nevada volcanic field. Geologic and hydrologic data from the well will aid in development of models to predict groundwater flow and contaminant migration within and near the Nevada Test Site.

  2. Metal-Air Batteries

    SciTech Connect (OSTI)

    Zhang, Jiguang; Bruce, Peter G.; Zhang, Gregory

    2011-08-01T23:59:59.000Z

    Metal-air batteries have much higher specific energies than most currently available primary and rechargeable batteries. Recent advances in electrode materials and electrolytes, as well as new designs on metal-air batteries, have attracted intensive effort in recent years, especially in the development of lithium-air batteries. The general principle in metal-air batteries will be reviewed in this chapter. The materials, preparation methods, and performances of metal-air batteries will be discussed. Two main metal-air batteries, Zn-air and Li-air batteries will be discussed in detail. Other type of metal-air batteries will also be described.

  3. Air temperature thresholds for indoor comfort and perceived air quality

    E-Print Network [OSTI]

    Zhang, Hui; Edward, Arens; Pasut, Wilmer

    2012-01-01T23:59:59.000Z

    system on perceived air quality, Indoor Air 2008, August 17-perception of indoor air quality during immediate and longeraddressing indoor air quality, thermal environment, lighting

  4. Air temperature thresholds for indoor comfort and perceived air quality

    E-Print Network [OSTI]

    Zhang, Hui; Edward, Arens; Pasut, Wilmer

    2012-01-01T23:59:59.000Z

    in the Netherlands, Indoor Air 2, 127 – 136. BuildingPaliaga, G. (2009) Moving air for comfort. ASHRAE Journal,ventilation system on perceived air quality, Indoor Air

  5. ARM - Campaign Instrument - ec-convair580-bulk

    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 3,625 1,006 492air Comments? We would love to hear from you! Send us a note below or call us at

  6. Feasibility of air capture

    E-Print Network [OSTI]

    Ranjan, Manya

    2010-01-01T23:59:59.000Z

    Capturing CO2 from air, referred to as Air Capture, is being proposed as a viable climate change mitigation technology. The two major benefits of air capture, reported in literature, are that it allows us to reduce the ...

  7. Moving air for comfort

    E-Print Network [OSTI]

    Arens, Edward; Turner, Stephen; Zhang, Hui; Paliaga, Gwelen

    2009-01-01T23:59:59.000Z

    Brager, L. Zagreus. 2007, “Air movement preferences observed709-731. 9. Toftum, J. 2004. “Air movement – good or bad? ”Indoor Air 14, pp 40-45. 10. Gong, N. , K. Tham, A. Melikov,

  8. Approved Module Information for EC102C, 2014/5 Module Title/Name: Construction Technology Module Code: EC102C

    E-Print Network [OSTI]

    Neirotti, Juan Pablo

    Code: EC102C School: Engineering and Applied Science Module Type: Standard Module New Module? No Module@aston.ac.uk Telephone Number Not Specified Office Not Specified Additional Module Tutor(s): Gayan Wedawatta. Level Assessment Rationale: Assessment is designed to meet module learning outcomes. The material covered by the 2

  9. Approved Module Information for EC211C, 2014/5 Module Title/Name: Estimation, Measurement & Scheduling Module Code: EC211C

    E-Print Network [OSTI]

    Neirotti, Juan Pablo

    & Scheduling Module Code: EC211C School: Engineering and Applied Science Module Type: Standard Module New Address s.h.park@aston.ac.uk Telephone Number Not Specified Office Not Specified Additional Module Tutor practice and scheduling using planning and control tools and techniques to evaluate students? own work

  10. Approved Module Information for EC114C, 2014/5 Module Title/Name: BIM for Construction Module Code: EC114C

    E-Print Network [OSTI]

    Neirotti, Juan Pablo

    : EC114C School: Engineering and Applied Science Module Type: Standard Module New Module? Yes Module package Intellectual Skills i. Conveying 3D structural information in a standard 2D/3D format used when BIM including 2D/3D drawings is implemented. Links to Research: BIM is one of tools that I

  11. Approved Module Information for EC316C, 2014/5 Module Title/Name: Facilities Management Module Code: EC316C

    E-Print Network [OSTI]

    Neirotti, Juan Pablo

    Level Agreements within Facilities Management ? Quality and Contract Management in Facilities ManagementApproved Module Information for EC316C, 2014/5 Module Title/Name: Facilities Management Module Code Credits: 10 Module Management Information Module Leader Name Yakubu Olawale Email Address olawalya

  12. Air Pollution Control (Oklahoma)

    Broader source: Energy.gov [DOE]

    This chapter enumerates primary and secondary ambient air quality standards and the significant deterioration increments. Significant deterioration refers to an increase in ambient air pollution...

  13. Primary zone air proportioner

    DOE Patents [OSTI]

    Cleary, Edward N. G. (San Diego, CA)

    1982-10-12T23:59:59.000Z

    An air proportioner is provided for a liquid hydrocarbon fueled gas turbine of the type which is convertible to oil gas fuel and to coal gas fuel. The turbine includes a shell for enclosing the turbine, an air duct for venting air in said shell to a gasifier, and a fuel injector for injecting gasified fuel into the turbine. The air proportioner comprises a second air duct for venting air from the air duct for mixing with fuel from the gasifier. The air can be directly injected into the gas combustion basket along with the fuel from the injector or premixed with fuel from the gasifier prior to injection by the fuel injector.

  14. Electrostatic ion waves in non-Maxwellian pair-ion plasmas

    SciTech Connect (OSTI)

    Arshad, Kashif [Department of Physics, Quaid-i-Azam University, Islamabad 44000 (Pakistan); National Centre for Physics, Quaid-i-Azam University Campus, Shadhra Valley Road, Islamabad 44000 (Pakistan); Mahmood, S. [Theoretical Plasma Physics Division, PINSTECH, P.O. Nilore, Islamabad 44000 (Pakistan); National Centre for Physics, Quaid-i-Azam University Campus, Shadhra Valley Road, Islamabad 44000 (Pakistan)

    2010-12-15T23:59:59.000Z

    The electrostatic ion waves are studied for non-Maxwellian or Lorentzian distributed unmagnetized pair-ion plasmas. The Vlasov equation is solved and damping rates are calculated for electrostatic waves in Lorentzian pair-ion plasmas. The damping rates of the electrostatic ion waves are studied for the equal and different ion temperatures of pair-ion species. It is found that the Landau damping rate of the ion plasma wave is increased in Lorentzian plasmas in comparison with Maxwellian pair-ion plasmas. The numerical results are also presented for illustration by taking into account the parameters reported in fullerene pair-ion plasma experiments.

  15. General Considerations of the Electrostatic Boundary Conditions in Oxide Heterostructures

    SciTech Connect (OSTI)

    Higuchi, Takuya

    2011-08-19T23:59:59.000Z

    When the size of materials is comparable to the characteristic length scale of their physical properties, novel functionalities can emerge. For semiconductors, this is exemplified by the 'superlattice' concept of Esaki and Tsu, where the width of the repeated stacking of different semiconductors is comparable to the 'size' of the electrons, resulting in novel confined states now routinely used in opto-electronics. For metals, a good example is magnetic/non-magnetic multilayer films that are thinner than the spin-scattering length, from which giant magnetoresistance (GMR) emerged, used in the read heads of hard disk drives. For transition metal oxides, a similar research program is currently underway, broadly motivated by the vast array of physical properties that they host. This long-standing notion has been recently invigorated by the development of atomic-scale growth and probe techniques, which enables the study of complex oxide heterostructures approaching the precision idealized in Fig. 1(a). Taking the subset of oxides derived from the perovskite crystal structure, the close lattice match across many transition metal oxides presents the opportunity, in principle, to develop a 'universal' heteroepitaxial materials system. Hand-in-hand with the continual improvements in materials control, an increasingly relevant challenge is to understand the consequences of the electrostatic boundary conditions which arise in these structures. The essence of this issue can be seen in Fig. 1(b), where the charge sequence of the sublayer 'stacks' for various representative perovskites is shown in the ionic limit, in the (001) direction. To truly 'universally' incorporate different properties using different materials components, be it magnetism, ferroelectricity, superconductivity, etc., it is necessary to access and join different charge sequences, labelled here in analogy to the designations 'group IV, III-V, II-VI' for semiconductors. As we will review, interfaces between different families creates a host of electrostatic issues. They can be somewhat avoided if, as in many semiconductor heterostructures, only one family is used, with small perturbations (such as n-type or p-type doping) around them. However, for most transition metal oxides, this is greatly restrictive. For example, LaMnO{sub 3} and SrMnO{sub 3} are both insulators in part due to strong electron correlations, and only in their solid solution does 'colossal magnetoresistance' emerge in bulk. Similarly, the metallic superlattice shown in Fig. 1(c) can be considered a nanoscale deconstruction of (La,Sr)TiO{sub 3} to the insulating parent compounds. Therefore the aspiration to arbitrarily mix and match perovskite components requires a basic understanding of, and ultimately control over, these issues. In this context, here we present basic electrostatic features that arise in oxide heterostructures which vary the ionic charge stacking sequence. In close relation to the analysis of the stability of polar surfaces and semiconductor heterointerfaces, the variation of the dipole moment across a heterointerface plays a key role in determining its stability. Different self-consistent assignments of the unit cell are presented, allowing the polar discontinuity picture to be recast in terms of an equivalent local charge neutrality picture. The latter is helpful in providing a common framework with which to discuss electronic reconstructions, local-bonding considerations, crystalline defects, and lattice polarization on an equal footing, all of which are the subject of extensive current investigation.

  16. Particle size effects in particle-particle triboelectric charging studied with an integrated fluidized bed and electrostatic separator system

    SciTech Connect (OSTI)

    Bilici, Mihai A.; Toth, Joseph R.; Sankaran, R. Mohan; Lacks, Daniel J. [Department of Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, Ohio 44106-7217 (United States)

    2014-10-15T23:59:59.000Z

    Fundamental studies of triboelectric charging of granular materials via particle-particle contact are challenging to control and interpret because of foreign material surfaces that are difficult to avoid during contacting and measurement. The measurement of particle charge itself can also induce charging, altering results. Here, we introduce a completely integrated fluidized bed and electrostatic separator system that charges particles solely by interparticle interactions and characterizes their charge on line. Particles are contacted in a free-surface fluidized bed (no reactor walls) with a well-controlled fountain-like flow to regulate particle-particle contact. The charged particles in the fountain are transferred by a pulsed jet of air to the top of a vertically-oriented electrostatic separator consisting of two electrodes at oppositely biased high voltage. The free-falling particles migrate towards the electrodes of opposite charge and are collected by an array of cups where their charge and size can be determined. We carried out experiments on a bidisperse size mixture of soda lime glass particles with systematically varying ratios of concentration. Results show that larger particles fall close to the negative electrode and smaller particles fall close to the positive electrode, consistent with theory and prior experiments that larger particles charge positively and smaller particles charge negatively. The segregation of particles by charge for one of the size components is strongest when its collisions are mostly with particles of the other size component; thus, small particles segregate most strongly to the negative sample when their concentration in the mixture is small (and analogous results occur for the large particles). Furthermore, we find additional size segregation due to granular flow, whereby the fountain becomes enriched in larger particles as the smaller particles are preferentially expelled from the fountain.

  17. AiR surface: AiR surface 1

    E-Print Network [OSTI]

    Tanaka, Jiro

    AiR surface: 1 PDA AiR surface 1 1: AiR surface () () 2 [1] [2] 3 AiR surface AiR surface surface surface surface 3.1 surface [3]( 3 ) surface 3.2 surface surface AiR surface 4 AiR surface surface AiR surface: Virtual Touch Panel

  18. Air Pollution Spring 2010

    E-Print Network [OSTI]

    ATS 555 Air Pollution Spring 2010 T Th 11:00 ­ 12:15, NESB 101 Instructor: Prof. Sonia Kreidenweis an understanding of types and sources of air pollution. 2. Examine concentrations of air pollutants and their effects on health and welfare. Review regulations governing air pollution. 3. Examine the meteorological

  19. Electrostatic coalescence of used automotive crankcase oil as an alternative to other separation processes 

    E-Print Network [OSTI]

    Dixon, John Leslie

    1998-01-01T23:59:59.000Z

    This thesis presents an initial investigation of using electrostatic coalescence as an alternative to conventional separation processes to purify used automotive crankcase oil. Specific emphasis of this study was the feasibility of this approach...

  20. Applications of an electrostatic high-voltage tether to radiation belt remediation

    E-Print Network [OSTI]

    Zeineh, Christopher F

    2007-01-01T23:59:59.000Z

    A computational algorithm is developed and executed to calculate the rate of depletion of magnetospheric ions by an electrostatic tether at various altitudes. This computation relies upon past studies in the OML regime of ...

  1. Molecular mechanics of cartilage : quantification of GAG electrostatic interactions via high-resolution force spectroscopy

    E-Print Network [OSTI]

    Seog, Joonil, 1969-

    2003-01-01T23:59:59.000Z

    Intermolecular repulsion forces between negatively charged glycosaminoglycan (CS-GAG) macromolecules are a major determinant of cartilage biomechanical properties. It is thought that the electrostatic component of the total ...

  2. Amperometric Glucose Biosensor by Means of Electrostatic Layer-by-layer Adsorption onto Electrospun Polyaniline Fibers

    E-Print Network [OSTI]

    Shin, Young J.

    2010-07-14T23:59:59.000Z

    were formed and collected by electrospinning. Glucose oxidase was immobilized onto these fibers using an electrostatic layer-by-layer adsorption technique. In this method, poly(diallyldimethylammonium chloride) was used as the counter ion source...

  3. On the electrostatic component of protein-protein binding free energy

    E-Print Network [OSTI]

    Talley, Kemper; Ng, Carmen; Shoppell, Michael; Kundrotas, Petras J.; Alexov, Emil

    2008-11-05T23:59:59.000Z

    of the electrostatic component of binding free energy (DeltaDeltaGel) with respect with different force fields (Charmm, Amber, and OPLS), different values of the internal dielectric constant, and different presentations of molecular surface (different values...

  4. Optics elements for modeling electrostatic lenses and accelerator components II. Acceleration columns

    SciTech Connect (OSTI)

    Gillespie, G.H., Brown, T.A.

    1998-05-01T23:59:59.000Z

    A set of optical models for a variety of electrostatic lenses and accelerator columns has been developed for the computer code TRACE 3-D. TRACE 3-D is an envelope (matrix) code including space charge that is often used to model bunched beams in magnetic transport systems and radiofrequency (RF) accelerators when the effects of beam current may be important. Several new matrix models have been developed that allow the code to be used for modeling beam lines and accelerators with electrostatic components. The new models include a number of options for: (1) einzel lenses, (2) accelerator columns, (3) electrostatic deflectors (prisms), and (4) an electrostatic quadrupole. A prescription for setting up the initial beam appropriate to modeling 2-D (continuous) beams has also been developed. The new models for (2) are described in this paper, selected comparisons with other calculations are presented, and a beamline application is summarized.

  5. Topological Features of both Electron Density and Electrostatic Potential in Bis(tiosemicarbazide)zinc(II)

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    of Theoretical Physics and Condensed Matter Physics, PO Box 522, 11001 Belgrade, Serbia 2. Laboratoire and electrostatic potential, including kinetic and potential energy densities, and atomic charges were reported

  6. Electrostatic ion perturbations in kinematically complex shear flows

    E-Print Network [OSTI]

    Osmanov, Z; Poedts, S

    2015-01-01T23:59:59.000Z

    The scope of the present paper is to determine how ion electrostatic wave perturbations in plasma flows are influenced by the presence of a kinematically complex velocity shear. For this purpose we consider a model based on the following set of physical equations: the equation of motion, the continuity equation and the Poisson equation for the electric potential governing the evolution of the system. After linearizing the equations, we solve them numerically. We find out that for a variety of specific values of parameters the system may exhibit quite interesting dynamic behaviour. In particular, we demonstrate that the system exhibits two different kinds of shear flow instabilities: (a)~when the wave vectors evolve exponentially, the ion sound modes become unstable as well; while, (b)~on the other hand, one can find areas in a parametric space where, when the wave vectors vary periodically, the physical system is subject to a strongly pronounced parametric instability. We also show the possibility of the gene...

  7. Electrostatic coalescence system with independent AC and DC hydrophilic electrodes

    DOE Patents [OSTI]

    Hovarongkura, A. David (Arlington, VA); Henry, Jr., Joseph D. (Morgantown, WV)

    1981-01-01T23:59:59.000Z

    An improved electrostatic coalescence system is provided in which independent AC and DC hydrophilic electrodes are employed to provide more complete dehydration of an oil emulsion. The AC field is produced between an AC electrode array and the water-oil interface wherein the AC electrode array is positioned parallel to the interface which acts as a grounded electrode. The emulsion is introduced into the AC field in an evenly distributed manner at the interface. The AC field promotes drop-drop and drop-interface coalescence of the water phase in the entering emulsion. The continuous oil phase passes upward through the perforated AC electrode array and enters a strong DC field produced between closely spaced DC electrodes in which small dispersed droplets of water entrained in the continuous phase are removed primarily by collection at hydrophilic DC electrodes. Large droplets of water collected by the electrodes migrate downward through the AC electrode array to the interface. All phase separation mechanisms are utilized to accomplish more complete phase separation.

  8. Noise-compensating pulses for electrostatically controlled silicon spin qubits

    E-Print Network [OSTI]

    Xin Wang; Fernando A. Calderon-Vargas; Muhed S. Rana; Jason P. Kestner; Edwin Barnes; Sankar Das Sarma

    2014-10-21T23:59:59.000Z

    We study the performance of SUPCODE---a family of dynamically correcting pulses designed to cancel simultaneously both Overhauser and charge noise for singlet-triplet spin qubits---adapted to silicon devices with electrostatic control. We consider both natural Si and isotope-enriched Si systems, and in each case we investigate the behavior of individual gates under static noise and perform randomized benchmarking to obtain the average gate error under realistic 1/f noise. We find that in most cases SUPCODE pulses offer roughly an order of magnitude reduction in gate error, and especially in the case of isotope-enriched Si, SUPCODE yields gate operations of very high fidelity. We also develop a version of SUPCODE that cancels the charge noise only, "$\\delta J$-SUPCODE", which is particularly beneficial for isotope-enriched Si devices where charge noise dominates Overhauser noise, offering a level of error reduction comparable to the original SUPCODE while yielding gate times that are 30% to 50% shorter. Our results show that the SUPCODE noise-compensating pulses provide a fast, simple, and effective approach to error suppression, bringing gate errors well below the quantum error correction threshold in principle.

  9. Pin-to-Pin Electrostatic Discharge Protection for Semiconductor Bridges

    SciTech Connect (OSTI)

    KING, TONY L.; TARBELL, WILLIAM W.

    2002-07-01T23:59:59.000Z

    The lack of protection for semiconductor bridges (SCBs) against human electrostatic discharge (ESD) presents an obstacle to widespread use of this device. The goal of this research is to protect SCB initiators against pin-to-pin ESD without affecting their performance. Two techniques were investigated. In the first, a parallel capacitor is used to attenuate high frequencies. The second uses a parallel zener diode to limit the voltage amplitude. Both the 1 {micro}F capacitor and the 14 V zener diode protected the SCBs from ESD. The capacitor provided the best protection. The protection circuits had no effect on the SCB's threshold voltage. The function time for the CP-loaded SCBs with capacitors was about 11 {micro}s when fired by a firing set charged to 40 V. The SCBs failed to function when protected by the 6 V and 8 V zeners. The 51 V zener did not provide adequate protection against ESD. The parallel capacitor succeeded in protecting SCB initiators against pin-to-pin ESD without affecting their performance. Additional experiments should be done on SCBs and actual detonators to further quantify the effectiveness of this technique. Methods for retrofitting existing SCB initiators and integrating capacitors into future devices should also be explored.

  10. Direct measurement of the plasma response to electrostatic ion waves

    SciTech Connect (OSTI)

    Sarfaty, M.; DeSouza-Machado, S.; Skiff, F. [Univ. of Maryland, College Park, MD (United States). Inst. for Plasma Research

    1995-12-31T23:59:59.000Z

    Plasma wave-wave and wave-particle interactions are studied in a linear magnetized plasma. The relatively quiet plasma is produced by an argon gas-discharge. The plasma density is n{sub e} {approx_equal} 10{sup 9} cm{sup {minus}3} and the electron/ion temperatures are T{sub e} {approx_equal} 5eV and T{sub i} = 0.05eV. A grid and a four ring antenna, both mounted on a scanning carriage, are used to launch electrostatic ion waves in the plasma. Laser Induced Fluorescence measurements of both the linear and the nonlinear plasma response to the wave fields are presented. The Vlasov-Poisson equations are used to explain the measured zero, first and second order terms of the ion distribution function in the presence of wave fields. In addition to the broadening (heating) of the ion distribution as the authors increase the wave amplitudes, induced plasma flows are observed both along and across the magnetic field.

  11. Eulerian simulations of collisional effects on electrostatic plasma waves

    SciTech Connect (OSTI)

    Pezzi, Oreste; Valentini, Francesco; Perrone, Denise; Veltri, Pierluigi [Dipartimento di Fisica and CNISM, Università della Calabria, 87036 Rende (CS) (Italy)] [Dipartimento di Fisica and CNISM, Università della Calabria, 87036 Rende (CS) (Italy)

    2013-09-15T23:59:59.000Z

    The problem of collisions in a plasma is a wide subject with a huge historical literature. In fact, the description of realistic plasmas is a tough problem to attack, both from the theoretical and the numerical point of view. In this paper, a Eulerian time-splitting algorithm for the study of the propagation of electrostatic waves in collisional plasmas is presented. Collisions are modeled through one-dimensional operators of the Fokker-Planck type, both in linear and nonlinear forms. The accuracy of the numerical code is discussed by comparing the numerical results to the analytical predictions obtained in some limit cases when trying to evaluate the effects of collisions in the phenomenon of wave plasma echo and collisional dissipation of Bernstein-Greene-Kruskal waves. Particular attention is devoted to the study of the nonlinear Dougherty collisional operator, recently used to describe the collisional dissipation of electron plasma waves in a pure electron plasma column [M. W. Anderson and T. M. O'Neil, Phys. Plasmas 14, 112110 (2007)]. Finally, for the study of collisional plasmas, a recipe to set the simulation parameters in order to prevent the filamentation problem can be provided, by exploiting the property of velocity diffusion operators to smooth out small velocity scales.

  12. On the potential energy in an electrostatically bound two-body system

    E-Print Network [OSTI]

    K. Wilhelm; B. N. Dwivedi

    2014-08-30T23:59:59.000Z

    The potential energy problem in an electrostatically bound two-body system is studied in the framework of a recently proposed impact model of the electrostatic force and in analogy to the potential energy in a gravitationally bound system. The physical processes are described that result in the variation of the potential energy as a function of the distance between the charged bodies. The energy is extracted from distributions of hypothetical interaction entities modified by the charged bodies.

  13. An innovative accelerator-driven inertial electrostatic confinement device using converging ion beams

    SciTech Connect (OSTI)

    Bauer, T. H.; Wigeland, R. A.

    1999-12-08T23:59:59.000Z

    Fundamental physics issues facing development of fusion power on a small-scale are assessed with emphasis on the idea of Inertial Electrostatic Confinement (IEC). The authors propose a new concept of accelerator-driven IEC fusion, termed Converging Beam Inertial Electrostatic Confinement (CB-IEC). CB-IEC offers a number of innovative features that make it an attractive pathway toward resolving fundamental physics issues and assessing the ultimate viability of the IEC concept for power generation.

  14. DEGB LOCA ECS power limit recommendation for the K-14. 1 subcycle

    SciTech Connect (OSTI)

    Smith, F.G. III; Aleman, S.E.

    1991-04-01T23:59:59.000Z

    This report documents assembly deposited power limits and the corresponding effluent temperature limits recommended for operating the K-14.1 subcycle to ensure sufficient cooling of reactor assemblies during the ECS phase of a Double Ended Guillotine Break (DEGSS) Loss of Coolant Accident (LOCA). The ECS LOCA effluent temperature limits are computed for each flowzone of the K-14.1 charge. The recommended overall DEGB LOCA ECS power limit is 1515 MW or about 63.1% of the historical full reactor power limit (assumed to be 2400-MW) for Mark 22 assemblies. The design basis accident is a break in the plenum inlet line where the AC pump motors not tripped.

  15. DEGB LOCA ECS power limit recommendation for the K-14.1 subcycle. Revision 1

    SciTech Connect (OSTI)

    Smith, F.G. III; Aleman, S.E.

    1991-04-01T23:59:59.000Z

    This report documents assembly deposited power limits and the corresponding effluent temperature limits recommended for operating the K-14.1 subcycle to ensure sufficient cooling of reactor assemblies during the ECS phase of a Double Ended Guillotine Break (DEGSS) Loss of Coolant Accident (LOCA). The ECS LOCA effluent temperature limits are computed for each flowzone of the K-14.1 charge. The recommended overall DEGB LOCA ECS power limit is 1515 MW or about 63.1% of the historical full reactor power limit (assumed to be 2400-MW) for Mark 22 assemblies. The design basis accident is a break in the plenum inlet line where the AC pump motors not tripped.

  16. Effects of electrostatic discharge on three cryogenic temperature sensor models

    SciTech Connect (OSTI)

    Courts, S. Scott; Mott, Thomas B. [Lake Shore Cryotronics, 575 McCorkle Blvd., Westerville, OH 43082 (United States)

    2014-01-29T23:59:59.000Z

    Cryogenic temperature sensors are not usually thought of as electrostatic discharge (ESD) sensitive devices. However, the most common cryogenic thermometers in use today are thermally sensitive diodes or resistors - both electronic devices in their base form. As such, they are sensitive to ESD at some level above which either catastrophic or latent damage can occur. Instituting an ESD program for safe handling and installation of the sensor is costly and it is desirable to balance the risk of ESD damage against this cost. However, this risk cannot be evaluated without specific knowledge of the ESD vulnerability of the devices in question. This work examines three types of cryogenic temperature sensors for ESD sensitivity - silicon diodes, Cernox(trade mark, serif) resistors, and wire wound platinum resistors, all manufactured by Lake Shore Cryotronics, Inc. Testing was performed per TIA/EIA FOTP129 (Human Body Model). Damage was found to occur in the silicon diode sensors at discharge levels of 1,500 V. For Cernox(trade mark, serif) temperature sensors, damage was observed at 3,500 V. The platinum temperature sensors were not damaged by ESD exposure levels of 9,900 V. At the lower damage limit, both the silicon diode and the Cernox(trade mark, serif) temperature sensors showed relatively small calibration shifts of 1 to 3 K at room temperature. The diode sensors were stable with time and thermal cycling, but the long term stability of the Cernox(trade mark, serif) sensors was degraded. Catastrophic failure occurred at higher levels of ESD exposure.

  17. air temperature air: Topics by E-print Network

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

    air temperatures... conditions. The design of this study was based on the relation- ship of four parameters: air temperature, air velocity, radiant heat, and globe...

  18. General Air Permits (Louisiana)

    Broader source: Energy.gov [DOE]

    Any source, including a temporary source, which emits or has the potential to emit any air contaminant requires an air permit. Facilities with potential emissions less than 5 tons per year of any...

  19. Healthy Air Act (Maryland)

    Broader source: Energy.gov [DOE]

    The Maryland Healthy Air Act was developed with the purpose of bringing Maryland into attainment with the National Ambient Air Quality Standards (NAAQS) for ozone and fine particulate matter by the...

  20. Compressed Air Supply Efficiency 

    E-Print Network [OSTI]

    Joseph, B.

    2004-01-01T23:59:59.000Z

    COMPRESSED AIR SUPPLY EFFICENCY Babu Joseph, Ph.D., P.E. Engineer Southern California Edison Irwindale, CA ABSTRACT This project, under contract from California Energy Commission, developed the CASE (Compressed Air Supply Efficiency...

  1. An ECS Centennial Series Article A Historical Perspective of Fuel Cell Technology

    E-Print Network [OSTI]

    Gleixner, Stacy

    An ECS Centennial Series Article A Historical Perspective of Fuel Cell Technology in the 20th Century M. L. Perry and T. F. Fuller*,z UTC Fuel Cells, LLC,1 South Windsor, Connecticut 06074, USA © 2002 anniversary of The Electrochemical Soci- ety, a retrospective look at the development of fuel cell technology

  2. Coal laboratory characterisation for CO2 geological storage E.C. Gaucher1

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Coal laboratory characterisation for CO2 geological storage E.C. Gaucher1 *, P.D.C. Défossez1 storage of CO2 in unmineable coal seams could be a very interesting option in the sustainable management of coal basins. However, the various chemical and physical parameters that determine the success

  3. Renewable Energy Research Laboratory www.ceere.org/rerl rerl@ecs.umass.edu

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Renewable Energy Research Laboratory www.ceere.org/rerl rerl@ecs.umass.edu Long Island, MA: SODAR ............................................................................... 17 Parade Grounds: December 15th , 2005 to September 15th , 2006.............................. 17.................................................................................. 19 With SODAR on ground: April 29 to June 2, 2005

  4. ME 364L Automatic Control System Design ABET EC2000 syllabus

    E-Print Network [OSTI]

    Ben-Yakar, Adela

    Material (references): R. Dorf and R. Bishop, Modern Control Systems, Addison-Wesley, 8th edition, 1998. KME 364L ­ Automatic Control System Design Page 1 ABET EC2000 syllabus ME 364L ­ Automatic Control design; continuous and discrete time control. Prerequisite(s): ME 344 Dynamics Systems and Control

  5. ME 337C Introduction to Nuclear Power Systems ABET EC2000 syllabus

    E-Print Network [OSTI]

    Ben-Yakar, Adela

    ME 337C ­ Introduction to Nuclear Power Systems Page 1 ABET EC2000 syllabus ME 337C ­ Introduction to Nuclear Power Systems Fall 2009 Required or Elective: Elective 2008-2010 Catalog Data: Radioactivity, nuclear interactions: fission and fusion, fission reactors, nuclear power systems, nuclear power safety

  6. NOAA's Office of Oceanic and Atmospheric Research Roundtable: Extended Continental Shelf (ECS)

    E-Print Network [OSTI]

    , and oil and gas reserves. They recommended exploring creative ways, such as partnerships, to leverage model #12;simulations to make an economic and societal case that some small investment in ECS mapping will provide a large return on investment in the future. Governance of the Interagency Process The participants

  7. Hydro-thermal flow in a rough fracture EC Contract SES6-CT-2003-502706

    E-Print Network [OSTI]

    Schmittbuhl, Jean

    Hydro-thermal flow in a rough fracture EC Contract SES6-CT-2003-502706 PARTICIPANT ORGANIZATION NAME: CNRS Synthetic 2nd year report Related with Work Package............ HYDRO-THERMAL FLOW in the influence of a realistic geometry of the fracture on its hydro-thermal response. Several studies have

  8. ME 379M Energy, Technology, and Policy ABET EC2000 syllabus

    E-Print Network [OSTI]

    Ben-Yakar, Adela

    ME 379M ­ Energy, Technology, and Policy Page 1 ABET EC2000 syllabus ME 379M ­ Energy, Technology, and Policy Spring 2010 Required or Elective: Elective 2008-2010 Catalog Data: Topics vary: Energy, Technology an overview of energy technologies, fuels, environmental impacts and public policies. Topics

  9. First direct determination of the superallowed $\\beta$-decay $Q_{EC}$-value for $^{14}$O

    E-Print Network [OSTI]

    Valverde, A A; Brodeur, M; Bryce, R A; Cooper, K; Eibach, M; Gulyuz, K; Izzo, C; Morrissey, D J; Redshaw, M; Ringle, R; Sandler, R; Schwarz, S; Sumithrarachchi, C S; Villari, A C C

    2015-01-01T23:59:59.000Z

    We report the first direct measurement of the $^{14}\\text{O}$ superallowed Fermi $\\beta$-decay $Q_{EC}$-value, the last of the so-called "traditional nine" superallowed Fermi $\\beta$-decays to be measured with Penning trap mass spectrometry. $^{14}$O, along with the other low-$Z$ superallowed $\\beta$-emitter, $^{10}$C, is crucial for setting limits on the existence of possible scalar currents. The new ground state $Q_{EC}$ value, 5144.364(25) keV, when combined with the energy of the $0^+$ daughter state, $E_x(0^+)=2312.798(11)$~keV [Nucl. Phys. A {\\bf{523}}, 1 (1991)], provides a new determination of the superallowed $\\beta$-decay $Q_{EC}$ value, $Q_{EC}(\\text{sa}) = 2831.566(28)$ keV, with an order of magnitude improvement in precision, and a similar improvement to the calculated statistical rate function $f$. This is used to calculate an improved $\\mathcal{F}t$-value of 3073.8(2.8) s.

  10. (Acts whose publication is obligatory) COUNCIL REGULATION (EC) No 149/2003

    E-Print Network [OSTI]

    Sussex, University of

    amending and updating Regulation (EC) No 1334/2000 setting up a Community regime for the control of exports to in Article 3 of that Regulation, which implements internationally agreed dual-use controls, including are designed or modified for military use, see the relevant list(s) of controls on military goods maintained

  11. ME 302 Introduction to Engineering Design and Graphics ABET EC2000 syllabus

    E-Print Network [OSTI]

    Ben-Yakar, Adela

    ME 302 ­ Introduction to Engineering Design and Graphics Page 1 ABET EC2000 syllabus ME 302 ­ Introduction to Engineering Design and Graphics Spring 2010 Required or Elective: Required 2008-2010 Catalog Data: Graphics and modeling fundamentals for engineering design: freehand sketching, computer modeling

  12. Master Thesis KTH/ ICT / ECS -2007 -123 System-level power management design

    E-Print Network [OSTI]

    Jantsch, Axel

    i Master Thesis KTH/ ICT / ECS - 2007 - 123 System-level power management design on portable management (DPM) schemes (also called policies) can be used to control the power consumption levels consumption of a Philips multimedia device prototype, and introduced a dynamic power management solution

  13. Dependability evaluation of a GNSS and ECS based localisation unit for railway vehicles

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Dependability evaluation of a GNSS and ECS based localisation unit for railway vehicles T on the combination of sensors such as a GNSS receiver and an Eddy Current Sensor, is studied. In this paper, we present a procedure and a model, which aims at evaluating the dependability of this system under local

  14. CEMP-EC 13 February 1995 TRI-SERVICE MILITARY CONSTRUCTION PROGRAM (MCP) INDEX

    E-Print Network [OSTI]

    US Army Corps of Engineers

    CEMP-EC 13 February 1995 TABLE IV TRI-SERVICE MILITARY CONSTRUCTION PROGRAM (MCP) INDEX FOR FY 1996 for projection beyond FY 2001. 2. Tri-Service MCP Index (1,000) = 1 October 1979 ENR Historical Building Cost THRU FY 2001 PROGRAMS ESCALATION PERCENTAGE DATE INDEX FOR FISCAL YEAR 1 OCT 1992 ------------- 1825

  15. CEMP-EC 26 February 1996 APPENDIX C (TM 5-800-4)

    E-Print Network [OSTI]

    US Army Corps of Engineers

    beyond FY 2001. 2. Tri-Service MCP Index (1,000) = 1 October 1979 ENR Historical Building Cost Index (1CEMP-EC 26 February 1996 APPENDIX C (TM 5-800-4) TRI-SERVICE MILITARY CONSTRUCTION PROGRAM (MCP) INDEX FOR FY 1997 THRU FY 2001 PROGRAMS ESCALATION PERCENTAGE DATE INDEX FOR FISCAL YEAR 1 OCT 1993

  16. CEMP-EC 18 February 1997 APPENDIX C (TM 5-800-4)

    E-Print Network [OSTI]

    US Army Corps of Engineers

    beyond FY 2004. 2. Tri-Service MCP Index (1,000) = 1 October 1979 ENR Historical Building Cost Index (1CEMP-EC 18 February 1997 APPENDIX C (TM 5-800-4) TRI-SERVICE MILITARY CONSTRUCTION PROGRAM (MCP) INDEX FOR FY 1998 THRU FY 2004 PROGRAMS ESCALATION PERCENTAGE DATE INDEX FOR FISCAL YEAR 1 OCT 1996

  17. ME 379M-Nuclear Safety and Security ABET EC2000 syllabus

    E-Print Network [OSTI]

    Ben-Yakar, Adela

    ME 379M- Nuclear Safety and Security Page 1 ABET EC2000 syllabus ME 379M Nuclear Safety assessment models and nuclear non-proliferation. Failure classifications, failure modes, effects, and criticality analysis (FMECA), fault and event trees, reliability block diagrams. Specific areas from the code

  18. Ethical Corporation: By Invitation -Climate change: Calling the fossil fuel abolitionists EC Newsdesk

    E-Print Network [OSTI]

    Hoffman, Andrew J.

    in a fossil fuel-based economy. Fossil fuels are our primary source of energy and support our entire wayEthical Corporation: By Invitation - Climate change: Calling the fossil fuel abolitionists EC Newsdesk 28 May 08 Where is the green Wilberforce? By Invitation: Climate change: Calling the fossil fuel

  19. ME 371K Legal Aspects of Engineering ABET EC2000 syllabus

    E-Print Network [OSTI]

    Ben-Yakar, Adela

    to the profession. h, j 10. Awareness of contemporary issues in engineering practice, including economic, social that graduates have the ability to: A. Apply principles of engineering, basic science, and mathematics (includingME 371K ­ Legal Aspects of Engineering Page 1 ABET EC2000 syllabus ME 371K ­ Legal Aspects

  20. Minimum 186 Basin levels required for operation of ECS and CWS pumps

    SciTech Connect (OSTI)

    Reeves, K.K.; Barbour, K.L.

    1992-10-01T23:59:59.000Z

    Operation of K Reactor with a cooling tower requires that 186 Basin loss of inventory transients be considered during Design Basis Accident analyses requiring ECS injection, such as the LOCA and LOPA. Since the cooling tower systems are not considered safety systems, credit is not taken for their continued operation during a LOPA or LOCA even though they would likely continue to operate as designed. Without the continued circulation of cooling water to the 186 Basin by the cooling tower pumps, the 186 Basin will lose inventory until additional make-up can be obtained from the river water supply system. Increasing the make-up to the 186 Basin from the river water system may require the opening of manually operated valves, the starting of additional river water pumps, and adjustments of the flow to L Area. In the time required for these actions a loss of basin inventory could occur. The ECS and CWS pumps are supplied by the 186 Basin. A reduction in the basin level will result in decreased pump suction head. This reduction in suction head will result in decreased output from the pumps and, if severe enough, could lead to pump cavitation for some configurations. The subject of this report is the minimum 186 Basin level required to prevent ECS and CWS pump cavitation. The reduction in ECS flow due to a reduced 186 Basin level without cavitation is part of a separate study.

  1. on man, nature & air pollution

    E-Print Network [OSTI]

    Finlayson-Pitts, Barbara J

    2008-01-01T23:59:59.000Z

    on man, nature & air pollution About three decades ago, itand episodes of air pollution the following summer. Wetthe increase in air pollution. This hypothesis generated

  2. Ventilation Air Preconditioning Systems

    E-Print Network [OSTI]

    Khattar, M.; Brandemuehl, M. J.

    1996-01-01T23:59:59.000Z

    simply and cost-effectively with a dual path arrangement that treats and controls the ventilation air independently of the recirculation air. The Electric Power Research Institute (EPRI)--the nonprofit R&D arm of the electric utility industry... particular type of application. EPRI is developing variations of the dual path concept to meet different reeofit and new construction markets. Figure 6. Ventilation Air Conditioner as a Separate Unit EPRVCALMAC System: Separate Unit for Ventilation Air...

  3. Collaborative Research: Dynamics of Electrostatic Solitary Waves on Current Layers

    SciTech Connect (OSTI)

    Pickett, Jolene S.

    2012-10-31T23:59:59.000Z

    The research carried out under the subject grant has provided insight into the generation of Electrostatic Solitary Waves (ESWs), which are nonlinear structures observed in space plasma data. These ESWs, appearing as pulses in the electric field time series data, represent the presence of several hundred meters to kilometer size positive potential structures, similar to champagne bubbles, where the electrons have been depleted, and which travel along Earth's magnetic field lines. The laboratory experiments carried out at the UCLA LAPD under the grant allowed us the opportunity to change various plasma and field conditions within the plasma device, and experiment with injection of suprathermal electron beams, in order to create ESWs. This then allowed us to determine the most likely method of generation of the ESWs. By comparing the properties of the ESWs observed in the LAPD to those observed in space and the plasma and field conditions under which those ESWs were observed in both locations, we were able to evaluate various ESW generation mechanisms. The findings of the laboratory experiments are that ESWs are generated through a lower hybrid instability. The ESWs observed in Earth's auroral current regions have similar characteristics to those generated by the laboratory when referenced to basic plasma and field characteristics, leading us to the conclusion that the lower hybrid drift instability is certainly a possibility for generation of the ESWs, at least in the auroral (northern/southern lights) regions. Due to space instrumentation insufficiencies and the limitations on telemetry, and thus poor time resolution, it is not possible to determine absolutely what generates these bubbles in space, but the laboratory experiments and supporting simulations have helped us to further our understanding of the processes under which they are generated. The public benefits from the findings of this research because the research is focused on current layers around Earth, which are affected by our Sun's activity. Understanding how these current layers are affected by the Sun provides insight into why radio communications are sometimes affected on Earth and how these layers help protect and facilitate our life on Earth.

  4. MAD-AIR

    E-Print Network [OSTI]

    Tooley, J. J.; Moyer, N. A.

    1989-01-01T23:59:59.000Z

    with stress- related illness rather than the anwr that spells RELIEF. Air flow in, through ad arourd a house is an important concern in the building we call haw. !lb enhance air flow and change the various corditions or properties of the air, a variety...

  5. Air Quality Chapter Outline

    E-Print Network [OSTI]

    Wechsler, Risa H.

    Chapter 30 Air Quality Chapter Outline 1 Overview 2 1.1 Hazards / Impacts 2 1.2 Exposure Sources 3 Manual Chapter 30: Air Quality 7 References 20 8 Implementation 21 9 Ownership 22 1 Overview SLAC operations produce a wide range of air emissions. Sources of emissions include standard equipment

  6. Nonlinear electrostatic excitations in magnetized dense plasmas with nonrelativistic and ultra-relativistic degenerate electrons

    SciTech Connect (OSTI)

    Mahmood, S.; Sadiq, Safeer; Haque, Q. [Theoretical Physics Division (TPD), PINSTECH, P.O. Nilore, Islamabad 44000 (Pakistan)] [Theoretical Physics Division (TPD), PINSTECH, P.O. Nilore, Islamabad 44000 (Pakistan)

    2013-12-15T23:59:59.000Z

    Linear and nonlinear electrostatic waves in magnetized dense electron-ion plasmas are studied with nonrelativistic and ultra-relativistic degenerate and singly, doubly charged helium (He{sup +}, He{sup ++}) and hydrogen (H{sup +}) ions, respectively. The dispersion relation of electrostatic waves in magnetized dense plasmas is obtained under both the energy limits of degenerate electrons. Using reductive perturbation method, the Zakharov-Kuznetsov equation for nonlinear propagation of electrostatic solitons in magnetized dense plasmas is derived for both nonrelativistic and ultra-relativistic degenerate electrons. It is found that variations in plasma density, magnetic field intensity, different mass, and charge number of ions play significant role in the formation of electrostatic solitons in magnetized dense plasmas. The numerical plots are also presented for illustration using the parameters of dense astrophysical plasma situations such as white dwarfs and neutron stars exist in the literature. The present investigation is important for understanding the electrostatic waves propagation in the outer periphery of compact stars which mostly consists of hydrogen and helium ions with degenerate electrons in dense magnetized plasmas.

  7. Plasma rotation and NTM onset driven by central EC deposition in TCV tokamak

    SciTech Connect (OSTI)

    Nowak, S.; Lazzaro, E. [Istituto di Fisica del Plasma CNR, Euratom Association, 20125 Milano (Italy); Sauter, O.; Canal, G.; Duval, B.; Federspiel, L.; Karpushov, A. N.; Kim, D.; Reimerders, H.; Rossel, J.; Testa, D.; Wagner, D. [Ecole Polytechnique Fédérale de Lausanne (EPFL), Centre de Recherches en Physique des Plasmas (CRPP), Association EURATOM-Confederation Suisse, 1015 Lausanne (Switzerland); Raju, D. [Institute for Plasma Research, Bhat, Gandhinagar, Gujarat (India); Collaboration: TCV Team

    2014-02-12T23:59:59.000Z

    The effects of the central electron cyclotron heating (ECH) and current drive (ECCD) on the spontaneous plasma rotation and on the presence of Tearing Modes (TM), observed in the TCV tokamak[1], were recently investigated as an interplay between the toroidal velocity and NTM onset in absence of sawteeth, ELMs and error fields [2–3]. In a set of reproducible TCV discharges (I{sub p}? ?150 kA, B{sub t}? ?1.4 T, ne,{sub av?} 1.5 10{sup 19} m{sup ?3}, T{sub e}? 3 keV and T{sub i}?0.25 keV, q{sub 95}?5.8) with both pure EC heating and current drive the cnt-Ip toroidal velocity was observed to be reduced with subsequent co-Ip appearance of 3/2 and 2/1 modes during the ramp up EC phases. The understanding of the capability of the on-axis EC power to modify the rotation profiles before and after the TM onset and of the sudden disappearance of 3/2 mode when 2/1 starts is the main purpose of this work. The velocity profile modifications are due to a direct effect of the EC absorbed power and also related to some variation of the perpendicular diffusion of the toroidal momentum and to magnetic braking effects of the kind of neoclassical toroidal viscosity (NTV) due to the NTM resonant field perturbations associated to the presence of TM. Numerical investigations are performed using a 1D toroidal momentum balance equation including contributions by external sources, as EC power, and NTV torques. Furthermore, the combined evolution of the 3/2 and 2/1 modes requires considering also coupling effects included in a generalized Rutherford equation for the modelling of the TM time growth.

  8. Air Handling Unit Supply Air Temperature Optimization During Economizer Cycles

    E-Print Network [OSTI]

    Xu, K.; Liu, M.; Wang, G.; Wang, Z.

    2007-01-01T23:59:59.000Z

    temperature at supply air temperature setpoint. Mechanical cooling is always required when outside air temperature is higher than the supply air temperature setpoint. Generally the supply air temperature setpoint is set at 55°F for space humidity control...

  9. Experimental test of whether electrostatically charged micro-organisms and their spores contribute to the onset of arcs across vacuum gaps

    SciTech Connect (OSTI)

    Grisham, L. R.; Halle, A. von; Carpe, A. F.; Gilton, K. R.; Rossi, Guy; Stevenson, T. N. [Princeton University Plasma Physics Laboratory, P. O. Box 451, Princeton, New Jersey 08543 (United States)] [Princeton University Plasma Physics Laboratory, P. O. Box 451, Princeton, New Jersey 08543 (United States)

    2013-12-15T23:59:59.000Z

    Recently it was proposed [L. R. Grisham et al. Phys. Plasmas 19, 023107 (2012)] that one of the initiators of vacuum voltage breakdown between conducting electrodes might be micro-organisms and their spores, previously deposited during exposure to air, which then become electrostatically charged when an electric potential is applied across the vacuum gap. This note describes a simple experiment to compare the number of voltage-conditioning pulses required to reach the nominal maximum operating voltage across a gap between two metallic conductors in a vacuum, comparing cases in which biological cleaning was done just prior to pump-down with cases where this was not done, with each case preceded by exposure to ambient air for three days. Based upon these results, it does not appear that air-deposited microbes and their spores constitute a major pathway for arc initiation, at least for exposure periods of a few days, and for vacuum gaps of a few millimeters, in the regime where voltage holding is usually observed to vary linearly with gap distance.

  10. Experimental Test Of Whether Electrostatically Charged Micro-organisms And Their Spores Contribute To The Onset Of Arcs Across Vacuum Gaps

    SciTech Connect (OSTI)

    none,; Grisham, Larry R.

    2014-02-24T23:59:59.000Z

    Recently it was proposed [L.R. Grisham, A. vonHalle, A.F. Carpe, Guy Rossi, K.R. Gilton, E.D. McBride, E.P. Gilson, A. Stepanov, T.N. Stevenson, Physics of Plasma 19 023107 (2012)] that one of the initiators of vacuum voltage breakdown between condu cting electrodes might be micro-organisms and their spores, previously deposited during exposure to air, which tnen become electrostatically charged when an electric potential is applied across the vacuum gap. The note describes a simple experiment to compare the number of voltage-conditioning pulses required to reach the nominal maxium operating voltage across a gap between two metallic conductors in a vacuum, comparing cases in which biological cleaning was done just prior to pump-down with cases where this was not done, with each preceded by exposure to ambient air for three days. Based upon these results, it does not appear that air-deposited microbes and their spores constitute a major pathway for arc initiation, at least for exposure periods of a few days, and for vacuum gaps of a few millimeters, in the regime where voltage holding is usually observed to vary linearly with gap distance

  11. Air to Air Communication Protocol Arjan Durresi1

    E-Print Network [OSTI]

    Jain, Raj

    1 Air to Air Communication Protocol Arjan Durresi1 , Vamsi Paruchuri1 , Leonard Barolli2 and Raj. Louis, MO 63130, USA 314-935-4963, jain@cse.wustl.edu Abstract--We present Air to Air Communication (AAC........................................................2 3. AIR TO AIR COMMUNICATION..............................3 4. SIMULATIONS

  12. In Situ Electrostatic Separation of Ambient PM2.5 into Source-Specific Fractions During Collection in a FRM Sampler

    SciTech Connect (OSTI)

    Naresh Shah; Frank E. Huggins; Gerald P. Huffman

    2006-07-31T23:59:59.000Z

    Coal combustion is generally viewed as a major source of PM2.5 emissions into the atmosphere. For some time, toxicologists have been asking for an exposure environment enriched with the coal combustion source specific PM{sub 2.5} to conduct meaningful exposure studies to better understand the mechanisms of the adverse health effects of coal combustion specific PM2.5 in the ambient environment. There are several unique characteristics of primary PM generated from coal combustion. In this research project, an attempt has been made to exploit some of the unique properties of PM generated from coal fired power plants to preferentially separate them out from the rest of the primary and secondary PM in the ambient environment. An existing FRM sampler used for monitoring amount of PM{sub 2.5} in the ambient air is modified to incorporate an electrostatic field. A DC corona charging device is also installed at the ambient air inlet to impart positive or negative charge to the PM. Visual Basic software has been written to simulate the lateral movement of PM as it passes through the electrostatic separator under varying operating conditions. The PM samples collected on polycarbonate filters under varying operating conditions were extensively observed for clustering and/or separation of PM in the direction parallel to the electric field. No systematic PM separation was observed under any of the operating conditions. A solution to overcome this kind of turbulence caused remixing has been offered. However, due to major programmatic changes in the DOE UCR program, there are no venues available to further pursue this research.

  13. Air Pollution- Local Air Quality (Ontario, Canada)

    Broader source: Energy.gov [DOE]

    The Air Pollution regulation administered by the Ministry of the Environment enforces compliance to the standards set in the Ontario law. The law is phased in, with portions taking effect in 2010,...

  14. ORIGINAL ARTICLE Ambient Air Pollution

    E-Print Network [OSTI]

    Mulholland, James A.

    ORIGINAL ARTICLE Ambient Air Pollution and Cardiovascular Emergency Department Visits Kristi Busico ambient air pollutants and cardiovascular disease (CVD), the roles of the physicochemical components the relation between ambient air pollution and cardiovascular conditions using ambient air quality data

  15. Electrostatic beneficiation of coal. Quarterly technical progress report, January 1, 1994--March 31, 1994

    SciTech Connect (OSTI)

    Mazumder, M.K.

    1994-04-28T23:59:59.000Z

    Electrostatic beneficiation of dry coal has received significant attention in the last decade. In this process the coal is ground and then charged, either by corona charging or by triboelectrification (friction charging). Coal and minerals receive different levels of charge -- often opposite polarities in the case of triboelectrification -- and can then be separated based on differences in electrical mobility. Problems associated with the techniques include rapid deposition of particles on the electrodes, thus, effecting further separation. The goal of this project is to optimize the electrostatic coal cleaning process to remove pyrites and inorganic materials through studies of the electrostatic properties of powdered coal, in-situ measurements of the electrodynamics of coal and mineral particles inside the separator, and development of self-cleaning collector plates for continuous separation.

  16. Comparison of EC-Kit with Quanti-Tray[tm] : testing, verification, and drinking water quality mapping in Capiz Province, Philippines

    E-Print Network [OSTI]

    Chuang, Patty

    2010-01-01T23:59:59.000Z

    This thesis accomplishes three tasks. First, it verifies the EC-Kit under different water source conditions by comparing it to a laboratory standard method, the IDEXX Quanti-Tray[tm]. The EC-Kit is a simple, inexpensive ...

  17. Three dimensional electrostatic solitary waves in a dense magnetoplasma with relativistically degenerate electrons

    SciTech Connect (OSTI)

    Ata-ur-Rahman,; Qamar, A. [Institute of Physics and Electronics, University of Peshawar, Peshawar 25000 (Pakistan) [Institute of Physics and Electronics, University of Peshawar, Peshawar 25000 (Pakistan); National Centre for Physics, QAU Campus, Shahdrah Valley Road, Islamabad 44000 (Pakistan); Masood, W. [National Centre for Physics, QAU Campus, Shahdrah Valley Road, Islamabad 44000 (Pakistan) [National Centre for Physics, QAU Campus, Shahdrah Valley Road, Islamabad 44000 (Pakistan); COMSATS, Institute of Information Technology, Park Road, Chak Shahzad, Islamabad 44000 (Pakistan); Eliasson, B. [Physics Department, University of Strathclyde, Glasgow G4 0NG, Scotland (United Kingdom)] [Physics Department, University of Strathclyde, Glasgow G4 0NG, Scotland (United Kingdom)

    2013-09-15T23:59:59.000Z

    In this paper, small but finite amplitude electrostatic solitary waves in a relativistic degenerate magnetoplasma, consisting of relativistically degenerate electrons and non-degenerate cold ions, are investigated. The Zakharov-Kuznetsov equation is derived employing the reductive perturbation technique and its solitary wave solution is analyzed. It is shown that only compressive electrostatic solitary structures can propagate in such a degenerate plasma system. The effects of plasma number density, ion cyclotron frequency, and direction cosines on the profiles of ion acoustic solitary waves are investigated and discussed at length. The relevance of the present investigation vis-a-vis pulsating white dwarfs is also pointed out.

  18. Weakly relativistic quantum kinetic theory for electrostatic wave modes in magnetized plasmas

    SciTech Connect (OSTI)

    Hussain, Azhar [Department of Physics, GC University Lahore, 54000 Lahore (Pakistan)] [Department of Physics, GC University Lahore, 54000 Lahore (Pakistan); Stefan, Martin; Brodin, Gert [Department of Physics, Umeå University, SE-901 87 Umeå (Sweden)] [Department of Physics, Umeå University, SE-901 87 Umeå (Sweden)

    2014-03-15T23:59:59.000Z

    We have derived the electrostatic dispersion relation in a magnetized plasma using a recently developed quantum kinetic model based on the Dirac equation. The model contains weakly relativistic spin effects such as Thomas precession, the polarization currents associated with the spin and the spin-orbit coupling. It turns out that for strictly electrostatic perturbations the non-relativistic spin effects vanish, and the modification of the classical dispersion relation is solely associated with the relativistic terms. Several new wave modes appear due the electron spin effects, and an example for astrophysical plasmas are given.

  19. Protein Adsorption into Mesopores: A Combination of Electrostatic Interaction, Counterion Release and van der Waals Forces

    E-Print Network [OSTI]

    Moerz, Sebastian T

    2015-01-01T23:59:59.000Z

    Bovine heart cytochrome c has been immobilized into the mesoporous silica host material SBA-15 in both its native folded and urea-unfolded state. The comparison of the two folding states' behavior casts doubt on the commonly used explanation of cytochrome c adsorption, i.e. the electrostatic interaction model. A detailed investigation of the protein binding as a function of pH and ionic strength of the buffer solution reveals the complex nature of the protein-silica interaction. Electrostatic interaction, van der Waals forces and entropic contributions by counterion release each contribute to adsorption on the silica pore walls.

  20. Protein Adsorption into Mesopores: A Combination of Electrostatic Interaction, Counterion Release and van der Waals Forces

    E-Print Network [OSTI]

    Sebastian T. Moerz; Patrick Huber

    2015-03-09T23:59:59.000Z

    Bovine heart cytochrome c has been immobilized into the mesoporous silica host material SBA-15 in both its native folded and urea-unfolded state. The comparison of the two folding states' behavior casts doubt on the commonly used explanation of cytochrome c adsorption, i.e. the electrostatic interaction model. A detailed investigation of the protein binding as a function of pH and ionic strength of the buffer solution reveals the complex nature of the protein-silica interaction. Electrostatic interaction, van der Waals forces and entropic contributions by counterion release each contribute to adsorption on the silica pore walls.

  1. SNRB{trademark} air toxics monitoring. Final report

    SciTech Connect (OSTI)

    Not Available

    1994-01-01T23:59:59.000Z

    Babcock & Wilcox (B&W) is currently conducting a project under the DOE`s Clean Coal Technology (CCT II) Program to demonstrate its SO{sub x}NO{sub x}-Rox Box{trademark} (SNRB{trademark}) process in a 5 MWe Field Demonstration Unit at Ohio Edison`s R. E. Burger Plant near Shadyside, Ohio. The objective of the SNRB{trademark} Air Toxics Monitoring Project was to provide data on SNRB{trademark} air toxics emissions control performance to B&W and to add to the DOE/EPRI/EPA data base by quantifying the flow rates of selected hazardous substances (or air toxics) in all of the major input and output streams of the SNRB{trademark} process as well as the power plant. Work under the project included the collection and analysis of representative samples of all major input and output streams of the SNRB{trademark} demonstration unit and the power plant, and the subsequent laboratory analysis of these samples to determine the partitioning of the hazardous substances between the various process streams. Material balances for selected air toxics were subsequently calculated around the SNRB{trademark} and host boiler systems, including the removal efficiencies across each of the major air pollution control devices. This report presents results of the SNRB{trademark} Air Toxics Monitoring Project. In addition to the Introduction, a brief description of the test site, including the Boiler No. 8 and the SNRB{trademark} process, is included in Section H. The concentrations of air toxic emissions are presented in Section II according to compound class. Material balances are included in Section IV for three major systems: boiler, electrostatic precipitator, and SNRB{trademark}. Emission factors and removal efficiencies are also presented according to compound class in Sections V and VI, respectively. A data evaluation is provided in Section VII.

  2. Simulating the FTICR-MS Signal of a Decaying Beryllium-7 Ion Plasma in a 2D Electrostatic PIC Code

    E-Print Network [OSTI]

    Hart, Gus

    Simulating the FTICR-MS Signal of a Decaying Beryllium-7 Ion Plasma in a 2D Electrostatic PIC Code the FTICR-MS Signal of a Decaying Beryllium-7 Ion Plasma in a 2D Electrostatic PIC Code Michael Takeshi Nakata Department of Physics and Astronomy Doctor of Philosophy Beryllium-7 (Be-7) only decays

  3. EUROTeV-Memo-2007-003 Power loss estimation in the Electrostatic Separators of the ILC

    E-Print Network [OSTI]

    Boyer, Edmond

    EUROTeV-Memo-2007-003 - 1 - Power loss estimation in the Electrostatic Separators of the ILC presents the power loss estimation in the Electrostatic Separators of the ILC alternative head-on scheme-003 - 2 - Computation The computation of the power losses has been realized using DIMAD software

  4. Air Pollution Control (Indiana)

    Broader source: Energy.gov [DOE]

    The mission of the Indiana Department of Environmental Management's Office of Air Quality implements federal and state regulations to protect human health and the environment while allowing the...

  5. Air Pollution Controls

    Broader source: Energy.gov [DOE]

    Various statutes within the Wisconsin Legislative Documents relate to air pollution control. These statutes describe zoning, permitting, and emissions regulations for hazardous and non-hazardous...

  6. Personal continuous air monitor

    DOE Patents [OSTI]

    Morgan, Ronald G. (Los Alamos, NM); Salazar, Samuel A. (Albuquerque, NM)

    2000-01-01T23:59:59.000Z

    A personal continuous air monitor capable of giving immediate warning of the presence of radioactivity has a filter/detector head to be worn in the breathing zone of a user, containing a filter mounted adjacent to radiation detectors, and a preamplifier. The filter/detector head is connected to a belt pack to be worn at the waist or on the back of a user. The belt pack contains a signal processor, batteries, a multichannel analyzer, a logic circuit, and an alarm. An air pump also is provided in the belt pack for pulling air through the filter/detector head by way of an air tube.

  7. Environmental Quality: Air (Louisiana)

    Broader source: Energy.gov [DOE]

    The Department of Environmental Quality regulates air quality in Louisiana. The Department has an established a fee system for funding the monitoring, investigation and other activities required...

  8. Control of the chaotic velocity dispersion of a cold electron beam interacting with electrostatic waves

    E-Print Network [OSTI]

    Guido Ciraolo; Cristel Chandre; Ricardo Lima; Marco Pettini; Michel Vittot

    2006-07-31T23:59:59.000Z

    In this article we present an application of a method of control of Hamiltonian systems to the chaotic velocity diffusion of a cold electron beam interacting with electrostatic waves. We numerically show the efficiency and robustness of the additional small control term in restoring kinetic coherence of the injected electron beam.

  9. Branches of electrostatic turbulence inside solitary plasma structures in the auroral ionosphere

    SciTech Connect (OSTI)

    Golovchanskaya, Irina V.; Kozelov, Boris V. [Polar Geophysical Institute, Apatity 184209 (Russian Federation); Chernyshov, Alexander A.; Mogilevsky, Mikhail M. [Space research Institute, Moscow 117997 (Russian Federation); Ilyasov, Askar A. [Moscow Institute of Physics and Technology, Moscow 141700 (Russian Federation); Space research Institute, Moscow 117997 (Russian Federation)

    2014-08-15T23:59:59.000Z

    The excitation of electrostatic turbulence inside space-observed solitary structures is a central topic of this exposition. Three representative solitary structures observed in the topside auroral ionosphere as large-amplitude nonlinear signatures in the electric field and magnetic-field-aligned current on the transverse scales of ?10{sup 2}–10{sup 3}?m are evaluated by the theories of electrostatic wave generation in inhomogeneous background configurations. A quantitative analysis shows that the structures are, in general, effective in destabilizing the inhomogeneous energy-density-driven (IEDD) waves, as well as of the ion acoustic waves modified by a shear in the parallel drift of ions. It is demonstrated that the dominating branch of the electrostatic turbulence is determined by the interplay of various driving sources inside a particular solitary structure. The sources do not generally act in unison, so that their common effect may be inhibiting for excitation of electrostatic waves of a certain type. In the presence of large magnetic-field-aligned current, which is not correlated to the inhomogeneous electric field inside the structure, the ion-acoustic branch becomes dominating. In other cases, the IEDD instability is more central.

  10. Photothermal electrostatics of the d-poiyvlnylidene fluoride photopyroelectric hydrogen gas sensor

    E-Print Network [OSTI]

    Mandelis, Andreas

    atoms adsorbed and subsequently absorbed in the Pd ground electrode of the PVDF. In this paper in Fig. 1. This amounts to a capacitor consisting of Pd-elec- trode (ground; anode)/PVDF dielectric/Al-Ni-electrode) A detailed photothermal electrostatic consideration of the Pd-pyroelectric junction H, sensor is presented

  11. Field-and concentration-dependence of electrostatics in non-polar colloidal asphaltene suspensions

    E-Print Network [OSTI]

    Firoozabadi, Abbas

    Field- and concentration-dependence of electrostatics in non-polar colloidal asphaltene suspensions-polar colloidal asphaltene suspensions. However, the nature of charging in asphaltene systems may be quite different than in other non-polar colloid systems. For instance, the origin of charging in asphaltene

  12. Tuning size and electrostatics in non-polar colloidal asphaltene suspensions by polymeric adsorption

    E-Print Network [OSTI]

    Firoozabadi, Abbas

    Tuning size and electrostatics in non-polar colloidal asphaltene suspensions by polymeric.1039/c1sm05384a The destabilization of asphaltenes adversely affects many aspects of the petroleum energy industry. Although polymeric dispersants have been shown to stabilize asphaltene colloids in non

  13. A completely iterative method for the infinite domain electrostatic problem with nonlinear dielectric media

    E-Print Network [OSTI]

    Dayal, Kaushik

    coupling a b s t r a c t We present an iterative method for the solution of the exterior all-space the device over all space, thus leading to an exterior electrostatic problem. In addition to this complexity in revised form 16 June 2011 Accepted 4 July 2011 Available online 20 July 2011 Keywords: Exterior

  14. Energy issues for construction of 10 nm sized electrostatic traps in saline solution

    E-Print Network [OSTI]

    Jingkun Guo; Zijin Lei; Shengyong Xu

    2015-05-02T23:59:59.000Z

    Microsized electrostatic tweezers for trapping and manipulating charged microparticles have been demonstrated in previous work. Nanosized electrostatic tweezers may play an important role in nanoscience and bioscience, yet it remains as a technical challenge. We presented here simulations on an artificial nanostructure of certain charge distribution. Energy-related issues in terms of electrostatic energy, entropy and free energy were discussed in detail for such a system working in an ionic saline solution. The results showed that at a nanostructure dimension of ten nanometers, it was still feasible to trap a smaller charged nanoparticle, and the entropy term induced by charge distribution was found critical in the total amount of free energy. The trapping performance is found affected by the choice of device material due to van der Waals interactions. In addition, possible interplays among the modeled nanostructures with varied charge distribution were calculated. This work may provide useful clues for construction of artificial electrostatic nano-tweezers, and it may also help for a better understand for the interplays among a variety of bio-macromolecules in a live cell.

  15. Electrostatic dynamo in reversed field pinch plasmas: simple common fundamental nature of laminar and turbulent regimes

    SciTech Connect (OSTI)

    Bonfiglio, D.; Cappello, S. [Consorzio RFX, Associazione EURATOM-ENEA sulla fusione, Padova (Italy); Escande, D. F. [Consorzio RFX, Associazione EURATOM-ENEA sulla fusione, Padova (Italy); CNRS-Universite de Provence, Marseille (France)

    2006-11-30T23:59:59.000Z

    Within the framework of magnetohydrodynamic (MHD) numerical modelling, the Reversed Field Pinch (RFP) has been found to develop turbulent or laminar regimes switching from the former to the latter in a continuous way depending on the strength of dissipative forces. The laminar solution corresponds to a simple global helical deformation of the current channel. A helically-modulated electrostatic field arises in order to account for the helical modulation of the current density along magnetic field lines. The associated electrostatic drift yields the main component of the dynamo velocity field. The continuity of the transition between the two regimes suggests that the simple laminar helical solution can provide a fruitful intuitive description of the RFP dynamo in general. In fact, the electrostatic drift remains the main component of the dynamo velocity field in the non-stationary turbulent regime for a sustained RFP. We show that the same dynamo action, due to the electrostatic drift, is provided either by one single mode and its harmonics, as in the laminar regime, or by a rich spectrum of modes with the action of full nonlinear coupling, as in the turbulent one. Here, we review our previous work and present new elements to clarify the physics of the RFP dynamo. Many of the MHD predictions are in good agreement with experimental findings.

  16. Efficient Evaluation of Binding Free Energy Using Continuum Electrostatics Danzhi Huang and Amedeo Caflisch*

    E-Print Network [OSTI]

    Caflisch, Amedeo

    Efficient Evaluation of Binding Free Energy Using Continuum Electrostatics Solvation Danzhi Huang of the absolute free energy of binding. A predictive accuracy of about 1.0 kcal/mol is obtained for 13 and 29 into proteins of known structure require fast and accurate methods for the evaluation of binding free energies.1

  17. WIND observations of coherent electrostatic waves in the solar wind A. Mangeney1

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    WIND observations of coherent electrostatic waves in the solar wind A. Mangeney1 , C. Salem1 , C: 15 September 1998 Abstract. The time domain sampler (TDS) experiment on WIND measures electric observations made in the solar wind near the Lagrange point v1. In the range of frequencies above the proton

  18. Entropy bound of a charged object and electrostatic self-energy in black holes

    E-Print Network [OSTI]

    B. Linet

    1999-11-30T23:59:59.000Z

    Without pretending to any rigour, we find a general expression of the electrostatic self-energy in static black holes with spherical symmetry. We determine the entropy bound of a charged object by assuming the existence of thermodynamics for these black holes. By combining these two results, we show that the entropy bound does not depend on the considered black hole.

  19. Electrostatic self-force in a static weak gravitational field with cylindrical symmetry

    E-Print Network [OSTI]

    B. Boisseau; C. Charmousis; B. Linet

    1996-03-04T23:59:59.000Z

    We determine the electrostatic self-force at rest in an arbitrary static metric with cylindrical symmetry in the linear approximation in the Newtonian constant. In linearised Einstein theory, we express it in terms of the components of the energy-momentum tensor.

  20. Design considerations for electrostatic microvalves with applications in poly(dimethylsiloxane)-based microfluidics

    E-Print Network [OSTI]

    Kenis, Paul J. A.

    (dimethylsiloxane)-based microfluidics Amit V. Desai,a Joshua D. Tice,a Christopher A. Apblettbc and Paul J. A. Kenis*a Received 19th of integrated microfluidic chips for a wide range of applications. In this paper, we present an analytical model to guide the design of electrostatic microvalves that can be integrated into microfluidic chips using

  1. Electrostatically-driven elastomer components for user-reconfigurable high density microfluidics

    E-Print Network [OSTI]

    Maharbiz, Michel

    Electrostatically-driven elastomer components for user-reconfigurable high density microfluidics microfluidic system intended for very large scale integration (VLSI) microfluidics. By adding thin film metal with standard PDMS microfluidics, has actuation voltages low enough to be driven by commercial CMOS IC's and can

  2. ChemicalPhysicsLetters270 (1997) 476-483 Electrostatics by Brownian dynamics

    E-Print Network [OSTI]

    Agmon, Noam

    ELSEVIER 30May 1997 ChemicalPhysicsLetters270 (1997) 476-483 CHEMICAL PHYSICS LETTERS, Jerusalem 91904, Israel Received26 December1996;in finalform31 March1997 Abstract The isomorphism between is demonstrated in simple illustrative calculations. © 1997 Elsevier Science B.V. 1. Introduction Electrostatic

  3. A METHOD FOR IMAGING CORROSION DAMAGE IN THIN PLATES FROM ELECTROSTATIC DATA

    E-Print Network [OSTI]

    Santosa, Fadil

    A METHOD FOR IMAGING CORROSION DAMAGE IN THIN PLATES FROM ELECTROSTATIC DATA Peter G. Kaup 1 nondestructive evaluation of corrosion in plates is considered. The inpection method uses boundary measurements of currents and voltages to determine the material loss caused by corrosion. The development of the method

  4. Integrated low emission cleanup system for direct coal-fueled turbines (electrostatic agglomeration)

    SciTech Connect (OSTI)

    Quimby, J.M.; Kumar, K.S.

    1992-01-01T23:59:59.000Z

    The objective of this contract was to investigate the removal of SO[sub x] and particulate matter from direct coal fired combustion gas streams at high temperature and high pressure conditions. This investigation was to be accomplished through a bench scale testing and evaluation program for SO[sub x] removal and the innovative particulate collection concept of particulate growth through electrostatic agglomeration followed by high efficiency mechanical collection. The process goal was to achieve control better than that required by 1979 New Source Performance Standards. During Phase I, the designs of the combustor and gas cleanup apparatus were successfully completed. Hot gas cleanup was designed to be accomplished at temperature levels between 1800[degrees] and 2500[degrees]F at pressures up to 15 atmospheres. The combustor gas flow rate could be varied between 0.2--0.5 pounds per second. The electrostatic agglomerator residence time could be varied between 0.25 to 3 seconds. In Phase II, all components were fabricated, and erected successfully. Test data from shakedown testing was obtained. Unpredictable difficulties in pilot plant erection and shakedown consumed more budget resources than was estimated and as a consequence DOE, METC, decided ft was best to complete the contract at the end of Phase II. Parameters studied in shakedown testing revealed that high-temperature high pressure electrostatics offers an alternative to barrier filtration in hot gas cleanup but more research is needed in successful system integration between the combustor and electrostatic agglomerator.

  5. An impact model of the electrostatic force: Coulomb's law re-visited

    E-Print Network [OSTI]

    K. Wilhelm; B. N. Dwivedi; H. Wilhelm

    2014-05-27T23:59:59.000Z

    The electrostatic force is described in this model by the action of electric dipole distributions on charged particles. The individual hypothetical dipoles are propagating at the speed of light in vacuum transferring momentum and energy between charges through interactions on a local basis. The model is constructed in analogy to an impact model describing the gravitational forces.

  6. Theory and simulations of electrostatic field error transport Daniel H. E. Dubin

    E-Print Network [OSTI]

    California at San Diego, University of

    Theory and simulations of electrostatic field error transport Daniel H. E. Dubin Department are of cen- tral importance in plasma theory and experiment. For ex- ample, in the theory of neoclassical theory by equating the Joule heating power to the wave energy loss rate,12,13 with the regime of linear

  7. AIR SEALING Seal air leaks and save energy!

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    AIR SEALING Seal air leaks and save energy! W H A T I S A I R L E A K A G E ? Ventilation is fresh air that enters a house in a controlled manner to exhaust excess moisture and reduce odors and stuffiness. Air leakage, or infiltration, is outside air that enters a house uncontrollably through cracks

  8. Air Quality: Air Pollutants, SLAC Emissions Sources, and Regulatory Reference

    E-Print Network [OSTI]

    Wechsler, Risa H.

    Air Quality: Air Pollutants, SLAC Emissions Sources, and Regulatory Reference Department: Chemical and General Safety Program: Air Quality Owner: Program Manager Authority: ES&H Manual, Chapter 30, Air Quality1 SLAC's air emissions are regulated through a federally mandated site-wide permit as well

  9. Yukawa-field approximation of electrostatic free energy and dielectric boundary force This article has been downloaded from IOPscience. Please scroll down to see the full text article.

    E-Print Network [OSTI]

    Li, Bo

    Yukawa-field approximation of electrostatic free energy and dielectric boundary force This article.1088/0951-7715/24/11/011 Yukawa-field approximation of electrostatic free energy and dielectric boundary force Hsiao-Bing Cheng1. The electrostatic free energy determines the dielectric boundary force that in turn influences crucially

  10. Chemisorption and anodic oxidation of aromatic molecules on Pd electrode surfaces: studies by UHV-EC-STM 

    E-Print Network [OSTI]

    Chen, Xiaole

    2006-04-12T23:59:59.000Z

    The chemisorption and anodic oxidation of hydroquinone (H2Q) and benzoquinone (BQ) at palladium electrode surfaces was studied by a combination of electrochemistry (EC), Auger electron spectroscopy (AES), ...

  11. Chemisorption and anodic oxidation of aromatic molecules on Pd electrode surfaces: studies by UHV-EC-STM

    E-Print Network [OSTI]

    Chen, Xiaole

    2006-04-12T23:59:59.000Z

    The chemisorption and anodic oxidation of hydroquinone (H2Q) and benzoquinone (BQ) at palladium electrode surfaces was studied by a combination of electrochemistry (EC), Auger electron spectroscopy (AES), high-resolution electron...

  12. A look at the ocean in the EC-Earth climate model Andreas Sterl Richard Bintanja Laurent Brodeau Emily Gleeson

    E-Print Network [OSTI]

    Haak, Hein

    to the special issue on EC-Earth, a global climate and earth system model based on the seasonal forecast system-011-1239-2 #12;phytoplankton) processes are involved. To study such complex interactions, Earth System Models

  13. Compressed Air System Optimization

    E-Print Network [OSTI]

    Aegerter, R.

    Several years ago I went to a gas station and noticed that my car's tires were low on air. I saw the gas station had an air compressor, but it cost a quarter to use the compressor. I paid my quarter and used the compressor. I realized...

  14. Recirculating electric air filter

    DOE Patents [OSTI]

    Bergman, W.

    1985-01-09T23:59:59.000Z

    An electric air filter cartridge has a cylindrical inner high voltage electrode, a layer of filter material, and an outer ground electrode formed of a plurality of segments moveably connected together. The outer electrode can be easily opened to remove or insert filter material. Air flows through the two electrodes and the filter material and is exhausted from the center of the inner electrode.

  15. air volume air: Topics by E-print Network

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

    Air Preheat Economics Texas A&M University - TxSpace Summary: Retrofit air preheat systems are the most reliable and efficient means to effect significant energy...

  16. Abatement of Air Pollution: Hazardous Air Pollutants (Connecticut...

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

    allowable stack concentrations and hazard limiting values for the emission of hazardous air pollutants. The regulations also discuss sampling procedures for hazardous air...

  17. Air Resources: Prevention and Control of Air Contamination and...

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

    limits and permitting and operational requirements for facilities that may contribute to air emissions. General air quality standards and standards for specific contaminants are...

  18. Air Pollution Control Regulations: No. 7 - Emission of Air Contaminant...

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

    with the enjoyment of life and property. The criteria for determining compliance is listed in the regulations, and is based on other air pollution and ambient air standards...

  19. Air ejector augmented compressed air energy storage system

    DOE Patents [OSTI]

    Ahrens, Frederick W. (Naperville, IL); Kartsounes, George T. (Naperville, IL)

    1980-01-01T23:59:59.000Z

    Energy is stored in slack demand periods by charging a plurality of underground reservoirs with air to the same peak storage pressure, during peak demand periods throttling the air from one storage reservoir into a gas turbine system at a constant inlet pressure until the air pressure in the reservoir falls to said constant inlet pressure, thereupon permitting air in a second reservoir to flow into said gas turbine system while drawing air from the first reservoir through a variable geometry air ejector and adjusting said variable geometry air ejector, said air flow being essentially at the constant inlet pressure of the gas turbine system.

  20. Renewables and air quality

    SciTech Connect (OSTI)

    Wooley, D.R.

    2000-08-01T23:59:59.000Z

    The US heavy reliance on fossil fuels is a central obstacle to improving air quality and preventing catastrophic climate change. To solve this problem will require a combination of financial incentives and market rules that strongly encourage development of renewable energy resources to meet electric power demand. One promising policy option is to allow renewable energy resources to directly participate in air pollution emission trading mechanisms. Currently, the clean air benefits of renewable energy generally go unrecognized by regulators, under-appreciated by consumers and uncompensated by markets. Renewable energy is a key clean air alternative to conventional electricity generation, and the development of renewables could be stimulated by changes to the Clean Air Act's emissions trading programs. As Congress revisits clean air issues over the next several years, renewable energy representatives could push for statutory changes that reward the renewable energy industry for the air quality benefits it provides. By also becoming involved in key US Environmental Protection Agency (EPA) and state rule-making cases, the renewables industry could influence the structure of emissions trading programs and strengthen one of the most persuasive arguments for wind, solar and biomass energy development.

  1. Texas Clean Air Act (Texas)

    Broader source: Energy.gov [DOE]

    This Act is designed to safeguard the state's air resources from pollution by requiring the control and abatement of air pollution and emissions of air contaminants, consistent with the protection...

  2. Air Quality (Nova Scotia, Canada)

    Broader source: Energy.gov [DOE]

    Nova Scotia Environment is responsible for monitoring the air quality in the province, as well as administering fines and permits relating to air quality. The Air Quality Regulations state...

  3. Health Hazards in Indoor Air

    E-Print Network [OSTI]

    Logue, Jennifer M.

    2012-01-01T23:59:59.000Z

    Health Hazards in Indoor Air. In Proceedings of the 2010for VOCs from post-1990 indoor air concentration studies inUnion project on indoor air pollutants. Allergy, 2008. 63(

  4. Making Compressed Air System Decisions

    E-Print Network [OSTI]

    Porri, R. E.

    . The design of a compressed air system was formerly limited to the selection of an air compressor large enough to deliver sufficient compressed air for the estimated system requirements. As system air requirements grew, additional compressors were added... specification, selection and installation process will follow. BACKGROUND For more than 100 years compressed air has been used throughout industry as a safe and reliable utility. The generation of this utility is performed by an air compressor. The first...

  5. Air heating system

    DOE Patents [OSTI]

    Primeau, John J. (19800 Seminole Rd., Euclid, OH 44117)

    1983-03-01T23:59:59.000Z

    A self-starting, fuel-fired, air heating system including a vapor generator, a turbine, and a condenser connected in a closed circuit such that the vapor output from the vapor generator is conducted to the turbine and then to the condenser where it is condensed for return to the vapor generator. The turbine drives an air blower which passes air over the condenser for cooling the condenser. Also, a condensate pump is driven by the turbine. The disclosure is particularly concerned with the provision of heat exchanger and circuitry for cooling the condensed fluid output from the pump prior to its return to the vapor generator.

  6. Air Cooling R&D

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

    or otherwise restricted information. 2 State of the Art Everything on a vehicle is air cooled, ultimately... Air cooling can be done... When?... How? Honda Insight Power...

  7. Ambient Air Quality Standards (Iowa)

    Broader source: Energy.gov [DOE]

    These regulations set statewide ambient air quality standards for various contaminants. The state code follows the regulations set forth in the National Primary and Secondary Ambient Air Quality...

  8. L3:EC.P9.05 CASL Summer Workshop

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron beamJoin2015JustKateKent5 BC WaEC.P9.05 CASL Summer

  9. Sandia Energy - EC, DHS's S&T Directorate, Federal Emergency Management

    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 Scienceand RequirementsCoatingsUltra-High-Voltage Silicon CarbideAgency: SUMMIT EC, DHS's

  10. Compressed Air Supply Efficiency

    E-Print Network [OSTI]

    Joseph, B.

    2004-01-01T23:59:59.000Z

    This project, under contract from California Energy Commission, developed the CASE (Compressed Air Supply Efficiency) Index as a stand-alone value for compressor central plant efficiency. This Index captures the overall efficiency of a compressed...

  11. Retrofit Air Preheat Economics

    E-Print Network [OSTI]

    Goolsbee, J. A.

    1981-01-01T23:59:59.000Z

    Retrofit air preheat systems are the most reliable and efficient means to effect significant energy conservation for large existing industrial furnaces. Units can be quickly installed without a lengthy shutdown, and the furnace efficiency can...

  12. Padding with Compressed Air

    E-Print Network [OSTI]

    Beals, C.

    2004-01-01T23:59:59.000Z

    We commonly find plants using padding to transport liquids or light solids short distances from tankers into storage tanks. Padding can wreck havoc in compressed air systems with limited storage, undersized cleanup equipment (dryers and filters...

  13. Canned Air in China

    E-Print Network [OSTI]

    Hacker, Randi

    2013-10-23T23:59:59.000Z

    Broadcast Transcript: Not that long ago, coal smoke made the air here in Beijing so caustic that your nasal passages were seared with each breath. Those were the good old days: Car ownership was limited to government ...

  14. Breathing zone air sampler

    SciTech Connect (OSTI)

    Tobin, John (Bethel Park, PA)

    1989-01-01T23:59:59.000Z

    A sampling apparatus is provided which comprises a sampler for sampling air in the breathing zone of a wearer of the apparatus and a support for the sampler preferably in the form of a pair of eyeglasses. The sampler comprises a sampling assembly supported on the frame of the eyeglasses and including a pair of sample transport tubes which are suspended, in use, centrally of the frame so as to be disposed on opposite sides of the nose of the wearer and which each include an inlet therein that, in use, is disposed adjacent to a respective nostril of the nose of the wearer. A filter holder connected to sample transport tubes supports a removable filter for filtering out particulate material in the air sampled by the apparatus. The sample apparatus is connected to a pump for drawing air into the apparatus through the tube inlets so that the air passes through the filter.

  15. Breathing zone air sampler

    SciTech Connect (OSTI)

    Tobin, J.

    1989-08-22T23:59:59.000Z

    A sampling apparatus is presented which comprises a sampler for sampling air in the breathing zone of a wearer of the apparatus and a support for the sampler preferably in the form of a pair of eyeglasses. The sampler comprises a sampling assembly supported on the frame of the eyeglasses and including a pair of sample transport tubes which are suspended, in use, centrally of the frame so as to be disposed on opposite sides of the nose of the wearer and which each include an inlet therein that, in use, is disposed adjacent to a respective nostril of the nose of the wearer. A filter holder connected to sample transport tubes supports a removable filter for filtering out particulate material in the air sampled by the apparatus. The sample apparatus is connected to a pump for drawing air into the apparatus through the tube inlets so that the air passes through the filter.

  16. Air pollution meteorology

    SciTech Connect (OSTI)

    Eagleman, J.R.

    1991-01-01T23:59:59.000Z

    Air Pollution Meteorology is divided into three parts: air pollution fundamentals; concentration calculations and distributions; and pollution and meteorological interactions. The first section includes chapters on the following topics: the problem; measurements, sources, and standards; air stagnation and pollutant index; and effects. The second section of the book includes chapters on diffusion theory, the Gaussian plume dispersion model, plume rise, various dispersion models, scale considerations, and concentration trends. The third and final section (on pollution and meteorological interactions) begins with two chapters on radiative and wind effects on dispersion, and then follows with chapters on acid rain, the ozone hole, the greenhouse effect, and nuclear winter. In summary, Air Pollution Meteorology does a good job of covering the field for physics, chemistry, and engineering students who want to obtain an overview of the subject.

  17. Air conditioning system

    DOE Patents [OSTI]

    Lowenstein, Andrew; Miller, Jeffrey; Gruendeman, Peter; DaSilva, Michael

    2005-02-01T23:59:59.000Z

    An air conditioner comprises a plurality of plates arranged in a successively stacked configuration with portions thereof having a spaced apart arrangement, and defining between successive adjacent pairs of plates at the spaced apart portions a first and second series of discrete alternating passages wherein a first air stream is passed through the first series of passages and a second air stream is passed through the second series of passages; and said stacked configuration of plates forming integrally therewith a liquid delivery means for delivering from a source a sufficient quantity of a liquid to the inside surfaces of the first series of fluid passages in a manner which provides a continuous flow of the liquid from a first end to a second end of the plurality of plates while in contact with the first air stream.

  18. Air bag restraint device

    DOE Patents [OSTI]

    Marts, D.J.; Richardson, J.G.

    1995-10-17T23:59:59.000Z

    A rear-seat air bag restraint device is disclosed that prevents an individual, or individuals, from continuing violent actions while being transported in a patrol vehicle`s rear seat without requiring immediate physical contact by the law enforcement officer. The air bag is activated by a control switch in the front seat and inflates to independently restrict the amount of physical activity occurring in the rear seat of the vehicle while allowing the officer to safely stop the vehicle. The air bag can also provide the officer additional time to get backup personnel to aid him if the situation warrants it. The bag is inflated and maintains a constant pressure by an air pump. 8 figs.

  19. Implosion and explosion of electrostatic cylindrical and spherical shocks in asymmetric pair-ion plasmas

    SciTech Connect (OSTI)

    Masood, W. [Theoretical Plasma Physics Division, PINSTECH, P.O. Nilore, Islamabad 54000 (Pakistan); National Centre for Physics (NCP), Shahdara Valley Road, Islamabad 44000 (Pakistan); Rizvi, H. [Theoretical Plasma Physics Division, PINSTECH, P.O. Nilore, Islamabad 54000 (Pakistan)

    2011-04-15T23:59:59.000Z

    Nonlinear electrostatic shock waves are studied in unmagnetized, dissipative pair-ion plasmas. The dissipation in the system is taken into account by considering the effect of kinematic viscosity of both positive and negative ions in plasmas. The system of fluid equations for asymmetric pair-ion plasma is reduced to Korteweg-deVries-Burgers equation in the limit of small amplitude perturbation. It is observed that the system under consideration admits rarefactive shocks. Keeping in view the practical applications, the nonlinear propagation of both the exploding and imploding shocks is investigated and the differences are expounded in detail. The present study may have relevance in the study of the formation of electrostatic shocks in laser-induced implosion devices, star formation, supernovae explosion, etc.

  20. Electrostatic drift-wave instability in a nonuniform quantum magnetoplasma with parallel velocity shear flows

    SciTech Connect (OSTI)

    Tariq, Sabeen; Mirza, Arshad M. [Department of Physics, Theoretical Plasma Physics Group, Quaid-i-Azam University, Islamabad 45320 (Pakistan); Masood, W. [Theoretical Plasma Physics Division, PINSTECH, P.O. Box. Nilore, Islamabad 44000, Pakistan and National Center for Physics (NCP), Islamabad 45320 (Pakistan)

    2010-10-15T23:59:59.000Z

    The propagation of high and low frequency (in comparison with the cyclotron frequency) electrostatic drift-waves is investigated in a nonuniform, dense magnetoplasma (composed of electrons and ions), in the presence of parallel shear flow, by employing the quantum magnetohydrodynamic (QMHD) model. Using QMHD model, a new set of equations is presented in order to investigate linear properties of electrostatic drift-waves with sheared plasma flows for dense plasmas. In this regard, dispersion relations for coupled electron-thermal and drift-ion acoustic modes are derived and several interesting limiting cases are discussed. For instance, it is found that sheared ion flow parallel to the external magnetic field can drive the quantum drift-ion acoustic wave unstable, etc. The present investigation may have relevance in dense astrophysical environments where quantum effects are significant.

  1. Selective electrostatic binding of ions by monolayers of mercaptan derivatives adsorbed to gold substrates

    SciTech Connect (OSTI)

    Sun, Li; Johnson, B.; Wade, T.; Crooks, R.M. (Univ. of New Mexico, Albuquerque (USA))

    1990-12-27T23:59:59.000Z

    A single, self-assembled monolayer of organic material is used to impart pH-dependent electrostatic-based recognition capability to an Au electrode. The results show that 4-aminothiophenol and related mercaptans change the surface characteristics of naked Au toward the adsorption of positively and negatively charged ions as a function of pH. For example, anthraquinone-2,6-disulfonate irreversibly adsorbs to naked Au surfaces over a broad range of pH. However, a preadsorbed monolayer of 4-aminothiophenol prevents adsorption of anthraquinone-2,6-disulfonate at high pH but electrostatically binds it at low pH. The principle of pH-dependent binding is general for a number of amine-, carboxylic acid-, and pyridine-terminated mercaptan derivatives adsorbed to Au surfaces.

  2. Formation of a field reversed configuration for magnetic and electrostatic confinement of plasma

    DOE Patents [OSTI]

    Rostoker, Norman; Binderbauer, Michl

    2003-12-16T23:59:59.000Z

    A system and method for containing plasma and forming a Field Reversed Configuration (FRC) magnetic topology are described in which plasma ions are contained magnetically in stable, non-adiabatic orbits in the FRC. Further, the electrons are contained electrostatically in a deep energy well, created by tuning an externally applied magnetic field. The simultaneous electrostatic confinement of electrons and magnetic confinement of ions avoids anomalous transport and facilitates classical containment of both electrons and ions. In this configuration, ions and electrons may have adequate density and temperature so that upon collisions they are fused together by nuclear force, thus releasing fusion energy. Moreover, the fusion fuel plasmas that can be used with the present confinement system and method are not limited to neutronic fuels only, but also advantageously include advanced fuels.

  3. Formation of a field reversed configuration for magnetic and electrostatic confinement of plasma

    DOE Patents [OSTI]

    Rostoker, Norman; Binderbauer, Michl; Qerushi, Artan; Tahsiri, Hooshang

    2007-02-20T23:59:59.000Z

    A system and method for containing plasma and forming a Field Reversed Configuration (FRC) magnetic topology are described in which plasma ions are contained magnetically in stable, non-adiabatic orbits in the FRC. Further, the electrons are contained electrostatically in a deep energy well, created by tuning an externally applied magnetic field. The simultaneous electrostatic confinement of electrons and magnetic confinement of ions avoids anomalous transport and facilitates classical containment of both electrons and ions. In this configuration, ions and electrons may have adequate density and temperature so that upon collisions they are fused together by nuclear force, thus releasing fusion energy. Moreover, the fusion fuel plasmas that can be used with the present confinement system and method are not limited to neutronic fuels only, but also advantageously include advanced fuels.

  4. Formation of a field reversed configuration for magnetic and electrostatic confinement of plasma

    DOE Patents [OSTI]

    Rostoker, Norman; Binderbauer, Michl; Qerushi, Artan; Tahsiri, Hooshang

    2006-02-07T23:59:59.000Z

    A system and method for containing plasma and forming a Field Reversed Configuration (FRC) magnetic topology are described in which plasma ions are contained magnetically in stable, non-adiabatic orbits in the FRC. Further, the electrons are contained electrostatically in a deep energy well, created by tuning an externally applied magnetic field. The simultaneous electrostatic confinement of electrons and magnetic confinement of ions avoids anomalous transport and facilitates classical containment of both electrons and ions. In this configuration, ions and electrons may have adequate density and temperature so that upon collisions they are fused together by nuclear force, thus releasing fusion energy. Moreover, the fusion fuel plasmas that can be used with the present confinement system and method are not limited to neutronic fuels only, but also advantageously include advanced fuels.

  5. Magnetohydrodynamic dynamo in reversed field pinch plasmas: Electrostatic drift nature of the dynamo velocity field

    SciTech Connect (OSTI)

    Cappello, S.; Bonfiglio, D.; Escande, D.F. [Consorzio RFX, Associazione Euratom-ENEA sulla Fusione, Corso Stati Uniti 4, 35127 Padova (Italy); Consorzio RFX, Associazione Euratom-ENEA sulla Fusione, Corso Stati Uniti 4, 35127 Padova (Italy); UMR 6633, CNRS-Universite de Provence, Marseille (France)

    2006-05-15T23:59:59.000Z

    Within the framework of magnetohydrodynamic (MHD) numerical modeling, the reversed field pinch (RFP) has been found to develop turbulent or laminar regimes switching from the former to the latter in a continuous way when the strength of dissipative forces increases. The laminar solution corresponds to a simple global helical deformation of the current channel and is associated with an electrostatic dynamo field. The related electrostatic drift yields the main component of the dynamo velocity field. While quite natural in the stationary helical state, this analysis is shown to extend also to the dynamic turbulent regime for an Ohmic RFP. The continuity of the transition between the two regimes suggests that the simple helical symmetric solution can provide a fruitful intuitive description of the RFP dynamo in general. Many of the MHD predictions are in good agreement with experimental findings.

  6. Electromagnetic field generation in the downstream of electrostatic shocks due to electron trapping

    E-Print Network [OSTI]

    Stockem, A; Fonseca, R A; Silva, L O

    2014-01-01T23:59:59.000Z

    A new magnetic field generation mechanism in electrostatic shocks is found, which can produce fields with magnetic energy density as high as 0.01 of the kinetic energy density of the flows on time scales $ \\tilde \\, 10^4 \\, {\\omega}_{pe}^{-1}$. Electron trapping during the shock formation process creates a strong temperature anisotropy in the distribution function, giving rise to the pure Weibel instability. The generated magnetic field is well-confined to the downstream region of the electrostatic shock. The shock formation process is not modified and the features of the shock front responsible for ion acceleration, which are currently probed in laser-plasma laboratory experiments, are maintained. However, such a strong magnetic field determines the particle trajectories downstream and has the potential to modify the signatures of the collisionless shock.

  7. Electrostatically defined Quantum Dots in a Si/SiGe Heterostructure

    E-Print Network [OSTI]

    A. Wild; J. Sailer; J. Nützel; G. Abstreiter; S. Ludwig; D. Bougeard

    2010-07-14T23:59:59.000Z

    We present an electrostatically defined few-electron double quantum dot (QD) realized in a molecular beam epitaxy grown Si/SiGe heterostructure. Transport and charge spectroscopy with an additional QD as well as pulsed-gate measurements are demonstrated. We discuss technological challenges specific for silicon-based heterostructures and the effect of a comparably large effective electron mass on transport properties and tunability of the double QD. Charge noise, which might be intrinsically induced due to strain-engineering is proven not to affect the stable operation of our device as a spin qubit. Our results promise the suitability of electrostatically defined QDs in Si/SiGe heterostructures for quantum information processing.

  8. Electrostatically defined Quantum Dots in a Si/SiGe Heterostructure

    E-Print Network [OSTI]

    Wild, A; Nützel, J; Abstreiter, G; Ludwig, S; Bougeard, D

    2010-01-01T23:59:59.000Z

    We present an electrostatically defined few-electron double quantum dot (QD) realized in a molecular beam epitaxy grown Si/SiGe heterostructure. Transport and charge spectroscopy with an additional QD as well as pulsed-gate measurements are demonstrated. We discuss technological challenges specific for silicon-based heterostructures and the effect of a comparably large effective electron mass on transport properties and tunability of the double QD. Charge noise, which might be intrinsically induced due to strain-engineering is proven not to affect the stable operation of our device as a spin qubit. Our results promise the suitability of electrostatically defined QDs in Si/SiGe heterostructures for quantum information processing.

  9. Systems and methods for the magnetic insulation of accelerator electrodes in electrostatic accelerators

    DOE Patents [OSTI]

    Grisham, Larry R

    2013-12-17T23:59:59.000Z

    The present invention provides systems and methods for the magnetic insulation of accelerator electrodes in electrostatic accelerators. Advantageously, the systems and methods of the present invention improve the practically obtainable performance of these electrostatic accelerators by addressing, among other things, voltage holding problems and conditioning issues. The problems and issues are addressed by flowing electric currents along these accelerator electrodes to produce magnetic fields that envelope the accelerator electrodes and their support structures, so as to prevent very low energy electrons from leaving the surfaces of the accelerator electrodes and subsequently picking up energy from the surrounding electric field. In various applications, this magnetic insulation must only produce modest gains in voltage holding capability to represent a significant achievement.

  10. inAir: Sharing Indoor Air Quality Measurements and Visualizations

    E-Print Network [OSTI]

    Mankoff, Jennifer

    evidence has indicated that indoor air pollution within homes and other buildings can be worse than the outdoor air pollution in even the largest and most industrialized cities. For example, the California Air Resources Board estimates that indoor air pollutant levels are 25-62% greater than outside levels [4

  11. Clearing the Air: "AIR" Training Session Wednesday, December 18

    E-Print Network [OSTI]

    Reed, Christopher A.

    Clearing the Air: "AIR" Training Session Wednesday, December 18 12 p.m. ­ 1:00 p.m. Human Resources/Tobacco- Free! Join us for an interactive session and learn more about "AIR" (Approach, Inform, Refer, and safe campus environment. Visit Clearing the Air website (http://tobaccofree.ucr.edu/) for more

  12. Air distribution effectiveness with stratified air distribution systems

    E-Print Network [OSTI]

    Chen, Qingyan "Yan"

    1 Air distribution effectiveness with stratified air distribution systems Kisup Lee* Zheng Jiang, Ph.D Qingyan Chen, Ph.D. Student Member ASHRAE Fellow ASHRAE ABSTRACT Stratified air distribution systems such as Traditional Displacement Ventilation (TDV) and Under- Floor Air Distribution (UFAD

  13. Dynamic pull-in of parallel plate and torsional electrostatic MEMS actuators.

    SciTech Connect (OSTI)

    Nielson, Gregory N.; Barbastathis, George (Massachusetts Institute of Technology, Cambridge, MA)

    2005-02-01T23:59:59.000Z

    An analysis of the dynamic characteristics of pull-in for parallel-plate and torsional electrostatic actuators is presented. Traditionally, the analysis for pull-in has been done using quasi-static assumptions. However, it was recently shown experimentally that a step input can cause a decrease in the voltage required for pull-in to occur. We propose an energy-based solution for the step voltage required for pull-in that predicts the experimentally observed decrease in the pull-in voltage. We then use similar energy techniques to explore pull-in due to an actuation signal that is modulated depending on the sign of the velocity of the plate (i.e., modulated at the instantaneous mechanical resonant frequency). For this type of actuation signal, significant reductions in the pull-in voltage can theoretically be achieved without changing the stiffness of the structure. This analysis is significant to both parallel-plate and torsional electrostatic microelectromechanical systems (MEMS) switching structures where a reduced operating voltage without sacrificing stiffness is desired, as well as electrostatic MEMS oscillators where pull-in due to dynamic effects needs to be avoided.

  14. Coarse-grained electrostatic interactions of coronene: Towards the crystalline phase

    E-Print Network [OSTI]

    Thomas Heinemann; Karol Palczynski; Joachim Dzubiella; Sabine H. L. Klapp

    2015-06-05T23:59:59.000Z

    In this article we present and compare two different, coarse-grained approaches to model electrostatic interactions of anisotropic organic molecules, specifically coronene. Our study is an extension of previous work [J. Chem. Phys. 141, 214110 (2014)] where we proposed, based on a systematic coarse-graining procedure starting from the atomistic level, an anisotropic effective (Gay-Berne-like) potential capable of describing van-der-Waals contributions to the interaction energy. To take into account electrostatics, we introduce, first, a linear quadrupole moment along the symmetry axis of the coronene disk. The second approach takes into account the fact that the partial charges within the molecules are distributed in a ring-like fashion. We then reparametrize the effective Gay-Berne-like potential such that it matches, at short distances, the ring-ring potential. To investigate the validity of these two approaches, we perform many-particle Molecular Dynamics (MD) simulations, focusing on the crystalline phase (karpatite) where electrostatic interaction effects are expected to be particularly relevant. Specifically, we investigate various structural parameters as well as the melting transition. We find that the second approach yields consistent results with those from experiments despite the fact that the underlying potential decays with the wrong distance dependence at large molecule separations. Our strategy can be transferred to a broader class of molecules, such as benzene or hexabenzocoronene.

  15. Integrated low emission cleanup system for direct coal-fueled turbines (electrostatic agglomeration)

    SciTech Connect (OSTI)

    Quimby, J.M.

    1992-02-01T23:59:59.000Z

    The objective of this contract is to investigate the removal of So{sub x} and particulate matter from direct coal-fired combustion gas streams at high temperature and high pressure conditions. This investigation will be accomplished through a bench-scale testing and evaluation program employing sorbent mixed with a coal-water slurry for So{sub x} removal, and an innovative particulate control concept. The particulate control device utilizes electrostatic agglomeration followed by a high efficiency mechanical collector (cyclone). The process goal is to achieve particulate collection efficiency better than that required by the 1979 new source performance standards. An additional goal is to demonstrate 70% So{sub x} removal efficiency. This research project is now in the second of a 3 phase (Phase II) project. Phase II is to fabricate the combustor and particulate control devices and install the system at a test facility located at Research-Cottrell's, KVB Western Laboratory, Santa Ana, CA. There are three functional categories, or tasks which are to be completed in sequence. These tasks are itemized as follows: Design, procurement, and installation; Shakedown and startup; Reporting. Attempts to validate the concept of electrostatic agglomeration were not possible in the shakedown program before budget constraints halted the program. What was learned was that electrostatic precipitation is feasible in the temperature range of 1600--1800{degrees}F and at pressures above 10 atmospheres.

  16. Electrostatic Potential of a Point Charge in a Brans-Dicke Reissner-Nordstrom Field

    E-Print Network [OSTI]

    Maya Watanabe; A. W. C Lun

    2013-08-12T23:59:59.000Z

    We consider the Brans-Dicke Reissner-Nordstrom spacetime in isotropic coordinates and the electrostatic field of an electric point charge placed outside its surface of inversion. We treat the static electric point charge as a linear perturbation on the Brans-Dicke Reissner-Nordstrom background. We develop a method based upon the Copson method to convert the governing Maxwell equation on the electrostatic potential generated by the static electric point charge into a solvable linear second order ordinary differential equation. We obtain a closed form fundamental solution of the curved space Laplace equation arising from the background metric, which is shown to be regular everywhere except at the point charge and its image point inside the surface of inversion. We also develop a method that demonstrates that the solution does not contain any other charge that may creep into the region that lies beyond the surface of inversion and which is not covered by the isotropic coordinates. The Brans-Dicke Reissner-Nordstrom spacetime therefore is linearly stable under electrostatic perturbations. This stability result includes the three degenerate cases of the fundamental solution that correspond to the Brans Type 1, the Reissner-Nordstrom and the Schwarzschild background spacetimes.

  17. PERFORMANCE EVALUATION OF AN AIR-TO-AIR HEAT PUMP COUPLED WITH TEMPERATE AIR-SOURCES INTEGRATED INTO A DWELLING

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    PERFORMANCE EVALUATION OF AN AIR-TO-AIR HEAT PUMP COUPLED WITH TEMPERATE AIR-SOURCES INTEGRATED.peuportier@mines-paristech.fr, Tel.: +33 1 40 51 91 51 ABSTRACT An inverter-driven air-to-air heat pump model has been developped capacity air-to-air heat pump coupled with temperate air sources (crawlspace, attic, sunspace, heat

  18. Air PSE (Problem Solving Environment)

    E-Print Network [OSTI]

    Nizkorodov, Sergey

    PSE - 1 Air PSE (Problem Solving Environment) MODELLING OF AIR POLLUTION IN THE LOS ANGELES BASIN WITH AIR PSE Developed by Prof. Donald Dabdub Computational Environmental Sciences Laboratory Mechanical COMPUTER MODELS An air pollution model is a computer program that computes how the different chemical

  19. High Capacity Pouch-Type Li-air Batteries

    SciTech Connect (OSTI)

    Wang, Deyu; Xiao, Jie; Xu, Wu; Zhang, Jiguang

    2010-05-05T23:59:59.000Z

    The pouch-type Li-air batteries operated in ambient condition are reported in this work. The battery used a heat sealable plastic membrane as package material, O2¬ diffusion membrane and moisture barrier. The large variation in internal resistance of the batteries is minimized by a modified separator which can bind the cell stack together. The cells using the modified separators show improved and repeatable discharge performances. It is also found that addition of about 20% of 1,2-dimethoxyethane (DME) in PC:EC (1:1) based electrolyte solvent improves can improve the wetability of carbon electrode and the discharge capacities of Li-air batteries, but further increase in DME amount lead to a decreased capacity due to increase electrolyte loss during discharge process. The pouch-type Li-air batteries with the modified separator and optimized electrolyte has demonstrated a specific capacity of 2711 mAh g-1 based on carbon and a specific energy of 344 Wh kg-1 based on the complete batteries including package.

  20. Compressed air energy storage system

    DOE Patents [OSTI]

    Ahrens, Frederick W. (Naperville, IL); Kartsounes, George T. (Naperville, IL)

    1981-01-01T23:59:59.000Z

    An internal combustion reciprocating engine is operable as a compressor during slack demand periods utilizing excess power from a power grid to charge air into an air storage reservoir and as an expander during peak demand periods to feed power into the power grid utilizing air obtained from the air storage reservoir together with combustible fuel. Preferably the internal combustion reciprocating engine is operated at high pressure and a low pressure turbine and compressor are also employed for air compression and power generation.

  1. Single-Duct Constant Air Volume System Supply Air Temperature Reset: Using Return Air Temperature or Outside Air Temperature? 

    E-Print Network [OSTI]

    Wei, G.; Turner, W. D.; Claridge, D.; Liu, M.

    2002-01-01T23:59:59.000Z

    space area. Room temperatures are controlled by pneumatic thermostats. The AHU has a minimum outside air damper and a maximum outside air damper. The minimum outside air damper is fully open when the AHU is in operation. The maximum outside air... of thermostat, and the relationship between room temperature set point and return air temperature. The Role Of Thermostat Traditional pneumatic thermostat is a proportional (P) type controller. It senses the space temperature changes and produces...

  2. Single-Duct Constant Air Volume System Supply Air Temperature Reset: Using Return Air Temperature or Outside Air Temperature?

    E-Print Network [OSTI]

    Wei, G.; Turner, W. D.; Claridge, D.; Liu, M.

    2002-01-01T23:59:59.000Z

    space area. Room temperatures are controlled by pneumatic thermostats. The AHU has a minimum outside air damper and a maximum outside air damper. The minimum outside air damper is fully open when the AHU is in operation. The maximum outside air... understand how this reset scheme responds to building load change, thus resulting in supply air temperature reset, it is helpful to explain the role of thermostat. In the following section, we explain the way how the thermostat works, the type...

  3. Evalutation and network of ec-decision support systems in the field of hydrological dispension models and of aquatic radioecological research Assessment of environmental models anf software

    E-Print Network [OSTI]

    Monte, L; Hofman, Dimitry

    2005-01-01T23:59:59.000Z

    Evalutation and network of ec-decision support systems in the field of hydrological dispension models and of aquatic radioecological research

  4. Calculation of Savannah River K Reactor Mark-22 assembly LOCA/ECS power limits

    SciTech Connect (OSTI)

    Fischer, S.R.; Farman, R.F.; Birdsell, S.A.

    1992-02-01T23:59:59.000Z

    This paper summarizes the results of TRAC-PF1/MOD3 calculations of Mark-22 fuel assembly of loss-of-coolant accident/emergency cooling system (LOCA/ECS) power limits for the Savannah River Site (SRS) K Reactor. This effort was part of a larger effort undertaken by the Los Alamos National Laboratory for the US Department of Energy to perform confirmatory power limits calculations for the SRS K Reactor. A method using a detailed three-dimensional (3D) TRAC model of the Mark-22 fuel assembly was developed to compute LOCA/ECS power limits. Assembly power was limited to ensure that no point on the fuel assembly walls would exceed the local saturation temperature. The detailed TRAC model for the Mark-22 assembly consisted of three concentric 3D vessel components which simulated the two targets, two fuel tubes, and three main flow channels of the fuel assembly. The model included 100% eccentricity between the assembly annuli and a 20% power tilt. Eccentricity in the radial alignment of the assembly annuli arises because axial spacer ribs that run the length of the fuel and targets are used. Wall-shear, interfacial-shear, and wall heat-transfer correlations were developed and implemented in TRAC-PF1/MOD3 specifically for modeling flow and heat transfer in the narrow ribbed annuli encountered in the Mark-22 fuel assembly design. We established the validity of these new constitutive models using separate-effects benchmarks. TRAC system calculations of K Reactor indicated that the limiting ECS-phase accident is a double-ended guillonite break in a process water line at the pump discharge (i.e., a PDLOCA). The fuel assembly with the minimum cooling potential is identified from this system calculation. Detailed assembly calculations then were performed using appropriate boundary conditions obtained from this limiting system LOCA. Coolant flow rates and pressure boundary conditions were obtained from this system calculation and applied to the detailed assembly model.

  5. Calculation of Savannah River K Reactor Mark-22 assembly LOCA/ECS power limits

    SciTech Connect (OSTI)

    Fischer, S.R.; Farman, R.F.; Birdsell, S.A.

    1992-01-01T23:59:59.000Z

    This paper summarizes the results of TRAC-PF1/MOD3 calculations of Mark-22 fuel assembly of loss-of-coolant accident/emergency cooling system (LOCA/ECS) power limits for the Savannah River Site (SRS) K Reactor. This effort was part of a larger effort undertaken by the Los Alamos National Laboratory for the US Department of Energy to perform confirmatory power limits calculations for the SRS K Reactor. A method using a detailed three-dimensional (3D) TRAC model of the Mark-22 fuel assembly was developed to compute LOCA/ECS power limits. Assembly power was limited to ensure that no point on the fuel assembly walls would exceed the local saturation temperature. The detailed TRAC model for the Mark-22 assembly consisted of three concentric 3D vessel components which simulated the two targets, two fuel tubes, and three main flow channels of the fuel assembly. The model included 100% eccentricity between the assembly annuli and a 20% power tilt. Eccentricity in the radial alignment of the assembly annuli arises because axial spacer ribs that run the length of the fuel and targets are used. Wall-shear, interfacial-shear, and wall heat-transfer correlations were developed and implemented in TRAC-PF1/MOD3 specifically for modeling flow and heat transfer in the narrow ribbed annuli encountered in the Mark-22 fuel assembly design. We established the validity of these new constitutive models using separate-effects benchmarks. TRAC system calculations of K Reactor indicated that the limiting ECS-phase accident is a double-ended guillonite break in a process water line at the pump discharge (i.e., a PDLOCA). The fuel assembly with the minimum cooling potential is identified from this system calculation. Detailed assembly calculations then were performed using appropriate boundary conditions obtained from this limiting system LOCA. Coolant flow rates and pressure boundary conditions were obtained from this system calculation and applied to the detailed assembly model.

  6. Conference-EC-US Task Force Joint US-EU Workshop on Metabolomics and Environmental Biotechnology

    SciTech Connect (OSTI)

    PI: Lily Y. Young; Co-PI: Gerben J. Zylstra

    2009-06-04T23:59:59.000Z

    Since 1990, the EC-US Task Force on Biotechnology Research has been coordinating transatlantic efforts to guide and exploit the ongoing revolution in biotechnology and the life sciences. The Task Force was established in June 1990 by the European Commission and the White House Office of Science and Technology Policy. The Task Force has acted as an effective forum for discussion, coordination, and development of new ideas for the last 18 years. Task Force members are European Commission and US Government science and technology administrators who meet annually to enhance communication across the Atlantic, and to encourage collaborative research. Through sponsoring workshops, and other activities, the Task Force also brings together scientific leaders and early career researchers from both sides of the Atlantic to forecast research challenges and opportunities and to promote better links between researchers. Over the years, by keeping a focus on the future of science, the Task Force has played a key role in establishing a diverse range of emerging scientific fields, including biodiversity research, neuroinformatics, genomics, nanobiotechnology, neonatal immunology, transkingdom molecular biology, biologically-based fuels, and environmental biotechnology. The EC-US Task Force has sponsored a number of Working Groups on topics of mutual transatlantic interest. The idea to create a Working Group on Environmental Biotechnology research was discussed in the Task Force meeting of October 1993. The EC-US Working Group on Environmental Biotechnology set as its mission 'To train the next generation of leaders in environmental biotechnology in the United States and the European Union to work collaboratively across the Atlantic.' Since 1995, the Working Group supported three kinds of activities, all of which focus one early career scientists: (1) Workshops on the use of molecular methods and genomics in environmental biotechnology; (2) Short courses with theoretical, laboratory and field elements; and (3) Short term exchange fellowships. The short term exchange fellowships were created to enable young scientists to develop collaborations with colleagues across the Atlantic and to learn a new skill or expertise in the area of environmental biotechnology.

  7. Auxiliary air injector assembly

    SciTech Connect (OSTI)

    Sager, R.L.

    1987-04-07T23:59:59.000Z

    This patent describes an auxiliary air injector assembly kit for replacement use to connect a secondary air line from an engine air pump to an exhaust pipe in a variety of combustion engine exhaust systems. The exhaust pipe has an auxiliary air receiving hole formed in a wall thereof. The assembly comprises a flexible conduit adapted to be readily cut to length and connected at one end to the secondary air line, a metal tube, means for connecting a first end of the metal tube to the other end of the flexible conduit, and a hollow fitting with an air flow-through passage and having a conical portion adapted to fit in the hole in a leak resistant manner. The fitting has a bearing portion with a convex spherical surface located outside the exhaust pipe when the conical portion is in the hole. A second end of the metal tube has a flange with a concave spherical surface to seat against the convex spherical surface in a leak resistant manner. A clamp means connects the metal tube to the exhaust pipe and applies pressure on the metal tube flange against the bearing portion of the fitting to hold the fitting in the hole. The clamp means includes a saddle having an opening larger than the tube but smaller than the tube flange. The tube extends through the saddle opening. The clamp means also includes a U-bolt assembly for extending around the exhaust pipe and forcing the saddle against the tube flange and toward the exhaust pipe.

  8. Air Resources: Prevention and Control of Air Contamination and Air Pollution, Air Quality Classifications and Standards, and Air Quality Area Classifications (New York)

    Broader source: Energy.gov [DOE]

    These regulations establish emissions limits and permitting and operational requirements for facilities that may contribute to air emissions. General air quality standards and standards for...

  9. Vermont Air Pollution Control Regulations, Ambient Air Quality Standards (Vermont)

    Broader source: Energy.gov [DOE]

    The ambient air quality standards are based on the national ambient air quality standards. The Vermont standards are classified as primary and secondary standards and judged adequate to protect...

  10. Industrial HVAC Air-to-Air Energy Recovery Retrofit Economics

    E-Print Network [OSTI]

    Graham, E. L.

    1980-01-01T23:59:59.000Z

    Retrofitting air-to-air energy recovery equipment is relatively simply to design and easy to install. Additionally, HVAC energy recovery is almost risk free when compared to process retrofit. Life cycle cost analysis is the best way to illustrate...

  11. Compressed Air 101: Getting Compressed Air to Work

    E-Print Network [OSTI]

    Burke, J. J.; Bessey, E. G.

    "Air compressors are a significant industrial energy user. Based on a survey (conducted by Oregon State University and the Bonneville Power Administration) of energy audit reports from 125 plants, air compressors account for roughly 10% of total...

  12. Cold Air Distribution in Office Buildings: Technology Assessment for California

    E-Print Network [OSTI]

    Bauman, F.S.

    2008-01-01T23:59:59.000Z

    warmer room air with the cold supply air whenever the supplyroom air diffusion with cold supply air temperatures under

  13. The investigation of exhaust powered, automotive air cycle air conditioning 

    E-Print Network [OSTI]

    Holley, James Andrew

    1978-01-01T23:59:59.000Z

    TEE INVESTIGATION OF EXHAUST POWERED, AUTOMOTIVE AIR CYCLE AIR CONDITIONING A Thesis James Andrew Holley Submitted to the Graduate College of Texas ASM University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE... August 1978 Major SubJect: Mechanical Engineering THE INVESTIGATION OF EXHAUST POWERED, AUTOMOTIVE AIR CYCLE AIR CONDITIONING A Thesis hy James Andrew Holley Approved as to style and content by: Chairman of Committee) (Head of Departm nt) Memb e...

  14. Comment on ‘‘The role of electrostatic inductionin secondary isotope effects on acidity’’ by E. A. Halevi, New J. Chem., 2014, 38, 3840

    E-Print Network [OSTI]

    Perrin, Charles L

    2015-01-01T23:59:59.000Z

    and zero-point energies. We reject an electrostatic ordifferences in zero-point energy (ZPE) 1 Recently E. Amitaiequilibrium (minimum-energy) position, to the vibrationally

  15. The electrostatic wake of a superthermal test electron in a magnetized plasma

    SciTech Connect (OSTI)

    Ware, A.A.; Wiley, J.C.

    1992-07-01T23:59:59.000Z

    The electrostatic potential is determined for a test electron with {upsilon}{sub {parallel}} {much_gt} {upsilon}{sub Te}, in a uniform magnetized plasma ({omega}{sub ce} {much_gt} {omega}{sub pe}). In the frame of the test electron, part of the spatially oscillatory potential has spherical symmetry over the hemisphere to the rear of the electron and is zero ahead of the electron. A second part of different character, which makes the potential continuous at the plane containing the electron, is oscillatory in the radial direction but decreases almost monotonically in the axial direction.

  16. The electrostatic wake of a superthermal test electron in a magnetized plasma

    SciTech Connect (OSTI)

    Ware, A.A.; Wiley, J.C.

    1992-07-01T23:59:59.000Z

    The electrostatic potential is determined for a test electron with {upsilon}{sub {parallel}} {much gt} {upsilon}{sub Te}, in a uniform magnetized plasma ({omega}{sub ce} {much gt} {omega}{sub pe}). In the frame of the test electron, part of the spatially oscillatory potential has spherical symmetry over the hemisphere to the rear of the electron and is zero ahead of the electron. A second part of different character, which makes the potential continuous at the plane containing the electron, is oscillatory in the radial direction but decreases almost monotonically in the axial direction.

  17. Low frequency electrostatic and electromagnetic modes of ultracold magnetized nonuniform dense plasmas

    SciTech Connect (OSTI)

    Saleem, H. [National Centre for Physics (NCP), Quaid-i-Azam University Campus, Islamabad (Pakistan); Department of Physics, COMSATS Institute of Information Technology (CIIT), Islamabad (Pakistan); Ahmad, Ali [Department of Physics, COMSATS Institute of Information Technology (CIIT), Islamabad (Pakistan); Theoretical Plasma Physics Division, Pakistan Institute of Nuclear Science and Technology (PINSTECH), Islamabad (Pakistan); Khan, S. A. [National Centre for Physics (NCP), Quaid-i-Azam University Campus, Islamabad (Pakistan); Department of Physics, COMSATS Institute of Information Technology (CIIT), Islamabad (Pakistan); Department of Physics, Government College Bagh AJK (Pakistan)

    2008-09-15T23:59:59.000Z

    A coupled linear dispersion relation for the basic electrostatic and electromagnetic waves in the ultracold nonuniform magnetized dense plasmas has been obtained which interestingly is analogous to the classical case. The scales of macroscopic phenomena and the interparticle quantum interactions are discussed. It is important to point out that hydrodynamic models cannot take into account strong quantum effects and they are not applicable to very dense plasmas. The analysis is presented with applications to dense plasmas which are relevant to both laboratory and astrophysical environments.

  18. Phase-mixing of electrostatic modes in a cold magnetized electron-positron plasma

    SciTech Connect (OSTI)

    Maity, Chandan; Chakrabarti, Nikhil [Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata 700 064 (India)] [Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata 700 064 (India); Sengupta, Sudip [Institute for Plasma Research, Bhat, Gandhinagar 382 428 (India)] [Institute for Plasma Research, Bhat, Gandhinagar 382 428 (India)

    2013-08-15T23:59:59.000Z

    In a fluid description, we study space-time evolution of electrostatic oscillations in a cold magnetized electron-positron plasma. Nonlinear results up to third order, obtained by employing a simple perturbation technique, indicate phase-mixing and thus breaking of excited oscillations, and provide an expression for the phase-mixing time. It is shown that an increase in the strength of ambient magnetic field results in an increase in the phase-mixing time. The results of our investigation will be of relevance to astrophysical environments as well as laboratory experiments.

  19. Electrostatic interactions in the presence of surface charge regulation: exact results

    E-Print Network [OSTI]

    A. C. Maggs; R. Podgornik

    2014-10-01T23:59:59.000Z

    We study the problem of charge regulation and its effects on electrostatic interactions between dissociable charge groups immersed in a univalent electrolyte, within a family of one dimensional exactly solvable models. We consider the case of both charge regulated plates, but also the interaction of pairs of finite size dielectric "particles". Using the transfer matrix formalism we are able to determine the disjoining pressure as well as the correlations between the charge and the dipole moments of the objects as a function of their separation and electrolyte concentration

  20. Threshold conditions for lasing of a free electron laser oscillator with longitudinal electrostatic wiggler

    SciTech Connect (OSTI)

    Sepehri Javan, N. [Department of Physics, Faculty of Sciences, University of Mohaghegh Ardabili, P.O. Box 179, Ardabil, 56199-11367 (Iran, Islamic Republic of)

    2012-12-15T23:59:59.000Z

    The system of the nonlinear non-stationary equations describing spatial-temporal dynamics of the amplitudes of an ondulator radiation and a space-charge wave of a relativistic electron beam in the resonator is obtained. A free electron laser resonator with longitudinal electrostatic wiggler is considered. In the linear approximation, the threshold conditions of lasing for Raman and Compton regimes under excitation of forward and backward electromagnetic wave are achieved. In the various physical situations, the variation of the minimum length of the resonator with the amplitude of wiggler, density of electron beam, and with the reflection coefficients of resonator's mirrors is investigated.

  1. Controlling the Electrostatic Discharge Ignition Sensitivity of Composite Energetic Materials Using Carbon Nanotube Additives

    SciTech Connect (OSTI)

    Kade H. Poper; Eric S. Collins; Michelle L. Pantoya; Michael Daniels

    2014-10-01T23:59:59.000Z

    Powder energetic materials are highly sensitive to electrostatic discharge (ESD) ignition. This study shows that small concentrations of carbon nanotubes (CNT) added to the highly reactive mixture of aluminum and copper oxide (Al + CuO) significantly reduces ESD ignition sensitivity. CNT act as a conduit for electric energy, bypassing energy buildup and desensitizing the mixture to ESD ignition. The lowest CNT concentration needed to desensitize ignition is 3.8 vol.% corresponding to percolation corresponding to an electrical conductivity of 0.04 S/cm. Conversely, added CNT increased Al + CuO thermal ignition sensitivity to a hot wire igniter.

  2. Note: Electrostatic detection of stainless steel dust particles for fusion applications

    SciTech Connect (OSTI)

    Landy, P. [Mechanical and Aerospace Engineering Department, Cornell University, Ithaca, New York 14853 (United States)] [Mechanical and Aerospace Engineering Department, Cornell University, Ithaca, New York 14853 (United States); Skinner, C. H.; Schneider, H. [Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543 (United States)] [Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543 (United States)

    2014-03-15T23:59:59.000Z

    Dust accumulation inside next-step fusion devices poses a significant safety concern and dust diagnostics will be needed to assure safe operations. An electrostatic dust detection device has been successfully demonstrated in the National Spherical Torus Experiment, Tore Supra, and the Large Helical Device, and the detector's response to carbon particles was previously characterized in laboratory experiments. This paper presents laboratory results showing that detection of stainless steel particles at levels as low as several ?g/cm{sup 2} is also possible.

  3. Onsager's symmetry relation and the residual parallel Reynolds stress in a magnetized plasma with electrostatic turbulence

    SciTech Connect (OSTI)

    Zuo, Yang, E-mail: yangzustc@gmail.com; Wang, Shaojie [Department of Modern Physics, University of Science and Technology of China, Hefei 230026 (China)

    2014-09-15T23:59:59.000Z

    The physics of the residual parallel Reynolds stress in a rotating plasma with electrostatic turbulence is explicitly identified by using the transport formulation of the gyrokinetic turbulence. It is clarified that the residual stress consists of four terms, among which are the cross terms due to the pressure gradient and the temperature gradient and the terms related to the turbulent acceleration impulse and the turbulent heating rate. The last two terms are identified for the first time, and are shown to cause analogous residual term in the heat flux. Meanwhile, the transport matrix reveals diffusion in the phase space. The transport matrix is demonstrated to satisfy the Onsager's symmetry relation.

  4. Environmental Pollution Air Pollution Dispersion Practical Air Pollution Dispersion

    E-Print Network [OSTI]

    Moncrieff, John B.

    Environmental Pollution Air Pollution Dispersion 1 of 5 Practical ­ Air Pollution Dispersion in the lectures how such models can be used to explain observed concentrations of air pollutants in an area and to test `what-if' scenarios for pollution control and reduction. You will use the Gaussian Plume Model

  5. Master Thesis ICT/ECS-2006-71 Multi-IP-Based SoC Design Including CCM

    E-Print Network [OSTI]

    Jantsch, Axel

    Master Thesis ICT/ECS-2006-71 Multi-IP-Based SoC Design Including CCM Security Mode of Operation. This thesis mainly implements CCM security mode of operation on a FPGA platform by using the AES encryption algorithm, it then builds a complete SoC that is based on multi IP cores including CCM. Except for the hard

  6. Q(EC) values of the superallowed beta emitters (10)C, (34)Ar, (38)Ca, and (46)V

    E-Print Network [OSTI]

    Eronen, T.; Gorelov, D.; Hakala, J.; Hardy, John C.; Jokinen, A.; Kankainen, A.; Moore, I. D.; Penttila, H.; Reponen, M.; Rissanen, J.; Saastamoinen, A.; Aysto, J.

    2011-01-01T23:59:59.000Z

    The Q(EC) values of the superallowed beta(+) emitters (10)C, (34)Ar, (38)Ca, and (46)V have been measured with the JYFLTRAP Penning-trap mass spectrometer to be 3648.12(8), 6061.83(8), 6612.12(7), and 7052.44(10) keV, respectively. All four values...

  7. ECS Transactions 3, (7), 1211-1222 (2006) Characterization of Strained Si/SiGe with Raman, Pulsed MOS Capacitor

    E-Print Network [OSTI]

    Schroder, Dieter K.

    2006-01-01T23:59:59.000Z

    ECS Transactions 3, (7), 1211-1222 (2006) 1211 Characterization of Strained Si/SiGe with Raman silicon/relaxed SiGe/graded SiGe/Si samples. The effective generation lifetime depends on the defect defective SiGe. GOI statistical analysis shows worsening oxide breakdown as the Ge concentration in the SiGe

  8. "ECS Transactions -Boston, MA" Volume 16, "Photovoltaics for the 21st Century 7" to be published in September, 2011

    E-Print Network [OSTI]

    Dagenais, Mario

    "ECS Transactions - Boston, MA" Volume 16, "Photovoltaics for the 21st Century 7" to be published Ã?/600 Ã? /200 Ã?. The CIGS film with homogeneous and dense surface morphology with large grain size temperature from 99.99% pure source. Figure 1(a) shows the schematic of the E-beam evaporation system used

  9. Rapid 3D Seismic Source Inversion Using Windows Azure and Amazon EC2 Vedaprakash Subramanian, Hongyi Ma,

    E-Print Network [OSTI]

    Wang, Liqiang

    Rapid 3D Seismic Source Inversion Using Windows Azure and Amazon EC2 Vedaprakash Subramanian seismic source inversion on both cluster (specif- ically, MPI-based) and cloud computing (specifically to seismic source in- version is feasible and has its advantages. In addition, we notice that both cluster

  10. Louisiana Air Control Law (Louisiana)

    Broader source: Energy.gov [DOE]

    This law states regulations for air quality control and states the powers and duties of the secretary of environmental quality. It provides information about permits and licenses, air quality...

  11. Tennessee Air Quality Act (Tennessee)

    Broader source: Energy.gov [DOE]

    The Tennessee Air Quality Act (AQA) delegates the power to maintain air quality in the State to the Department of Environment and Conservation. Under the Department of the Environment and...

  12. Air Pollution Control Fees (Ohio)

    Broader source: Energy.gov [DOE]

    Facilities with a potential to emit any one regulated air pollutant of a quantity greater than or equal to 100 tons per year, or any one hazardous air pollutant (HAP) greater than or equal to 10...

  13. Compressed Air Audits using AIRMaster

    E-Print Network [OSTI]

    Wheeler, G. M.; McGill, R. D.; Bessey, E. G.; Vischer, K.

    Air compressors are a significant industrial energy user and therefore a prime target for industrial energy audits. The project goal was to develop a software tool, AIRMaster, and supporting methodology for performing compressed air system audits...

  14. Fundamentals of Compressed Air Systems

    Office of Energy Efficiency and Renewable Energy (EERE)

    Find out how a compressed air system works and the benefits of optimal compressed air system performance. This initial class demonstrates how to compute the current cost of your plant's compressed...

  15. COMBUSTION-GENERATED INDOOR AIR POLLUTION

    E-Print Network [OSTI]

    Hollowell, C.D.

    2010-01-01T23:59:59.000Z

    The Status of Indoor Air Pollution Research 1976. Geometand appliances and air pollution levels in the indoorAnnual Meeting of the Air Pollution Control Association,

  16. COMBUSTION-GENERATED INDOOR AIR POLLUTION

    E-Print Network [OSTI]

    Hollowell, C.D.

    2011-01-01T23:59:59.000Z

    The Japanese Union of Air Pollution Prevention Associations,The Status of Indoor Air Pollution Research 1976, GeometAnnual Meeting of the Air Pollution Control Association,

  17. Review: Integrating Climate, Energy and Air Pollution

    E-Print Network [OSTI]

    Toohey, David E.

    2013-01-01T23:59:59.000Z

    Climate, Energy and Air Pollution By Gary Bryner with RobertEnergy, and Air Pollution. Cambridge, Massachusetts, The MITClimate, Energy, and Air Pollution provides a well-

  18. Radionuclide Air Emission Report for 2011

    E-Print Network [OSTI]

    Wahl, Linnea

    2012-01-01T23:59:59.000Z

    LBNL-470E-20Ì1 Radionuclide Air Emission Report for Preparedfor Estimating Fugitive Air Emissions of Radionuclides fromStandards for Hazardous Air Pollutants (Radionuclides),

  19. Oil and Gas Air Heaters 

    E-Print Network [OSTI]

    Kou, G.; Wang, H.; Zhou, J.

    2006-01-01T23:59:59.000Z

    , the relation of hot-air temperature, oil or gas consumption and fresh airflow is determined based on energy equilibrium....

  20. Oil and Gas Air Heaters

    E-Print Network [OSTI]

    Kou, G.; Wang, H.; Zhou, J.

    2006-01-01T23:59:59.000Z

    , the relation of hot-air temperature, oil or gas consumption and fresh airflow is determined based on energy equilibrium....

  1. TTProblem A Air Conditioning Machinery

    E-Print Network [OSTI]

    California at Berkeley, University of

    TTProblem A Air Conditioning Machinery Input file: ducts.in You are a technician for the Air Conditioning Machinery company (ACM). Unfortunately, when you arrive at a customer site to install some air conditioning ducts, you discover that you are running low on supplies. You have only six duct segments

  2. Air Pollution Socio-Economic

    E-Print Network [OSTI]

    Minnesota, University of

    Traffic Air Pollution and Socio-Economic Status Gregory C Pratt PhD Kristie Ellickson PhD #12 · Relationships #12;Living near traffic increases exposure to air pollution and is associated with adverse health exposed to traffic and air pollution. They are also more vulnerable and have an increased risk of adverse

  3. FLUIDIC: Metal Air Recharged

    ScienceCinema (OSTI)

    Friesen, Cody

    2014-04-02T23:59:59.000Z

    Fluidic, with the help of ARPA-E funding, has developed and deployed the world's first proven high cycle life metal air battery. Metal air technology, often used in smaller scale devices like hearing aids, has the lowest cost per electron of any rechargeable battery storage in existence. Deploying these batteries for grid reliability is competitive with pumped hydro installations while having the advantages of a small footprint. Fluidic's battery technology allows utilities and other end users to store intermittent energy generated from solar and wind, as well as maintain reliable electrical delivery during power outages. The batteries are manufactured in the US and currently deployed to customers in emerging markets for cell tower reliability. As they continue to add customers, they've gained experience and real world data that will soon be leveraged for US grid reliability.

  4. Air Observe System

    E-Print Network [OSTI]

    Alexander Bolonkin

    2007-01-10T23:59:59.000Z

    This manuscript contains a description and basic principles for observing inaccessible areas using low cost, easily deployed equipment. The basic premise is to suspend a tiny video camera at an altitude of 10 - 200 meters over the area to be surveyed. The TV camera supports at altitude by wind or balloon. The technical challenges regard the means by which the camera is suspended. Such a system may be used by military or police forces or by civil authorities for rescue missions or assessment of natural disasters. The method may be further developed for military applications by integrating the surveillance task with deployment of munitions. Key words: air observer, air suspended system, low altitude video observer.

  5. FLUIDIC: Metal Air Recharged

    SciTech Connect (OSTI)

    Friesen, Cody

    2014-03-07T23:59:59.000Z

    Fluidic, with the help of ARPA-E funding, has developed and deployed the world's first proven high cycle life metal air battery. Metal air technology, often used in smaller scale devices like hearing aids, has the lowest cost per electron of any rechargeable battery storage in existence. Deploying these batteries for grid reliability is competitive with pumped hydro installations while having the advantages of a small footprint. Fluidic's battery technology allows utilities and other end users to store intermittent energy generated from solar and wind, as well as maintain reliable electrical delivery during power outages. The batteries are manufactured in the US and currently deployed to customers in emerging markets for cell tower reliability. As they continue to add customers, they've gained experience and real world data that will soon be leveraged for US grid reliability.

  6. Air cathode structure manufacture

    DOE Patents [OSTI]

    Momyer, William R. (Palo Alto, CA); Littauer, Ernest L. (Los Altos Hills, CA)

    1985-01-01T23:59:59.000Z

    An improved air cathode structure for use in primary batteries and the like. The cathode structure includes a matrix active layer, a current collector grid on one face of the matrix active layer, and a porous, nonelectrically conductive separator on the opposite face of the matrix active layer, the collector grid and separator being permanently bonded to the matrix active layer. The separator has a preselected porosity providing low IR losses and high resistance to air flow through the matrix active layer to maintain high bubble pressure during operation of the battery. In the illustrated embodiment, the separator was formed of porous polypropylene. A thin hydrophobic film is provided, in the preferred embodiment, on the current collecting metal grid.

  7. First storage of ion beams in the Double Electrostatic Ion-Ring Experiment: DESIREE

    SciTech Connect (OSTI)

    Schmidt, H. T.; Thomas, R. D.; Gatchell, M.; Rosen, S.; Reinhed, P.; Loefgren, P.; Braennholm, L.; Blom, M.; Bjoerkhage, M.; Baeckstroem, E.; Alexander, J. D.; Leontein, S.; Zettergren, H.; Liljeby, L.; Kaellberg, A.; Simonsson, A.; Hellberg, F.; Mannervik, S.; Larsson, M.; Geppert, W. D. [Department of Physics, Stockholm University, SE-10691 Stockholm (Sweden); and others

    2013-05-15T23:59:59.000Z

    We report on the first storage of ion beams in the Double ElectroStatic Ion Ring ExpEriment, DESIREE, at Stockholm University. We have produced beams of atomic carbon anions and small carbon anion molecules (C{sub n}{sup -}, n= 1, 2, 3, 4) in a sputter ion source. The ion beams were accelerated to 10 keV kinetic energy and stored in an electrostatic ion storage ring enclosed in a vacuum chamber at 13 K. For 10 keV C{sub 2}{sup -} molecular anions we measure the residual-gas limited beam storage lifetime to be 448 s {+-} 18 s with two independent detector systems. Using the measured storage lifetimes we estimate that the residual gas pressure is in the 10{sup -14} mbar range. When high current ion beams are injected, the number of stored particles does not follow a single exponential decay law as would be expected for stored particles lost solely due to electron detachment in collision with the residual-gas. Instead, we observe a faster initial decay rate, which we ascribe to the effect of the space charge of the ion beam on the storage capacity.

  8. Electrostatic mode associated with the pinch velocity in reversed field pinch simulations

    SciTech Connect (OSTI)

    Delzanno, Gian Luca [Los Alamos National Laboratory (LANL); Chacon, Luis [Oak Ridge National Laboratory (ORNL); Finn, John M. [Los Alamos National Laboratory (LANL)

    2008-01-01T23:59:59.000Z

    The existence of a new phenomenon in reversed field pinch (RFP) simulations related to the equilibrium pinch flow is discussed. This behavior is due to the inward equilibrium flow, but is strongly affected by boundary conditions on the perturbed azimuthal flow. It is important to understand and control this mechanism in single helicity simulations of RFPs. This mechanism can be explained in terms of an electrostatic instability related to a mode which can occur in fluid dynamics. In a simple linear model, it is shown that the mode, which is related to the inward advection of angular momentum from the edge, can be stabilized by using homogeneous Dirichlet (no-slip) boundary conditions at the wall. Behavior due to this mode is present in nonlinear simulations with zero-viscous-stress boundary conditions on the tangential velocity at the wall and, even in the presence of the usual magnetohydrodynamic modes, this mode can dominate the nonlinear dynamics of the velocity. In nonlinear simulations with Dirichlet boundary conditions on the tangential velocity, behavior associated with this electrostatic mode is not observed.

  9. Electrostatic mode associated with the pinch velocity in reversed field pinch simulations

    SciTech Connect (OSTI)

    Delzanno, Gian Luca; Finn, John M. [T-15 Plasma Theory Group, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States); Chacon, Luis [T-15 Plasma Theory Group, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States); Fusion Energy Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830 (United States)

    2008-12-15T23:59:59.000Z

    The existence of a new phenomenon in reversed field pinch (RFP) simulations related to the equilibrium pinch flow is discussed. This behavior is due to the inward equilibrium flow, but is strongly affected by boundary conditions on the perturbed azimuthal flow. It is important to understand and control this mechanism in single helicity simulations of RFPs. This mechanism can be explained in terms of an electrostatic instability related to a mode which can occur in fluid dynamics. In a simple linear model, it is shown that the mode, which is related to the inward advection of angular momentum from the edge, can be stabilized by using homogeneous Dirichlet (no-slip) boundary conditions at the wall. Behavior due to this mode is present in nonlinear simulations with zero-viscous-stress boundary conditions on the tangential velocity at the wall and, even in the presence of the usual magnetohydrodynamic modes, this mode can dominate the nonlinear dynamics of the velocity. In nonlinear simulations with Dirichlet boundary conditions on the tangential velocity, behavior associated with this electrostatic mode is not observed.

  10. Differences in Electrostatic Potential Around DNA Fragments Containing Guanine and 8-oxo-Guanine

    SciTech Connect (OSTI)

    Haranczyk, Maciej; Gutowski, Maciej S.

    2007-02-01T23:59:59.000Z

    hanges of electrostatic potential (EP) around the DNA molecule resulting from chemical modifications of nucleotides may play a role in enzymatic recognition of damaged sites. Effects of chemical modifications of nucleotides on the structure of DNA have been characterized through large scale density functional theory computations. Quantum mechanical structural optimizations of DNA fragments with three pairs of nucleotoides and accompanying counteractions were performed with a B3LYP exchange-correlation functional and 6-31G** basis sets. The “intact” DNA fragment contained guanine in the middle layer, while the “damaged” fragment had the guanine replaced with 8-oxo-guanine. The electrostatic potential around these DNA fragments was projected on a surface around the double helix. The 2D maps of EP of intact and damaged DNA fragments were analyzed to identify these modifications of EP that result from the occurrence of 8-oxo-guanine. It was found that distortions of the phosphate groups and displacements of the accompanying countercations are clearly reflected in the EP maps.

  11. Unbiased acceleration measurements with an electrostatic accelerometer on a rotating platform

    E-Print Network [OSTI]

    Benjamin Lenoir; Bruno Christophe; Serge Reynaud

    2013-01-06T23:59:59.000Z

    The Gravity Advanced Package is an instrument composed of an electrostatic accelerometer called MicroSTAR and a rotating platform called Bias Rejection System. It aims at measuring with no bias the non-gravitational acceleration of a spacecraft. It is envisioned to be embarked on an interplanetary spacecraft as a tool to test the laws of gravitation. MicroSTAR is based on Onera's experience and inherits in orbit technology. The addition of the rotating platform is a technological upgrade which allows using an electrostatic accelerometer to make measurements at low frequencies with no bias. To do so, the Bias Rejection System rotates MicroSTAR such that the signal of interest is separated from the bias of the instrument in the frequency domain. Making these unbiased low-frequency measurements requires post-processing the data. The signal processing technique developed for this purpose is the focus of this article. It allows giving the conditions under which the bias is completely removed from the signal of interest. And the precision of the unbiased measurements can be fully characterized: given the characteristics of the subsystems, it is possible to reach a precision of 1 pm s$^{-2}$ on the non-gravitational acceleration for an integration time of 3 h.

  12. Air Risk Information Support Center

    SciTech Connect (OSTI)

    Shoaf, C.R.; Guth, D.J. [Environmental Protection Agency, Washington, DC (United States)

    1990-12-31T23:59:59.000Z

    The Air Risk Information Support Center (Air RISC) was initiated in early 1988 by the US Environmental Protection Agency`s (EPA) Office of Health and Environmental Assessment (OHEA) and the Office of Air Quality Planning and Standards (OAQPS) as a technology transfer effort that would focus on providing information to state and local environmental agencies and to EPA Regional Offices in the areas of health, risk, and exposure assessment for toxic air pollutants. Technical information is fostered and disseminated by Air RISCs three primary activities: (1) a {open_quotes}hotline{close_quotes}, (2) quick turn-around technical assistance projects, and (3) general technical guidance projects. 1 ref., 2 figs.

  13. National Security Science and Technology Initiative: Air Cargo Screening

    SciTech Connect (OSTI)

    Bingham, Philip R [ORNL; White, Tim [Pacific Northwest National Laboratory (PNNL); Cespedes, Ernesto [Idaho National Laboratory (INL); Bowerman, Biays [Brookhaven National Laboratory (BNL); Bush, John [Battelle

    2010-11-01T23:59:59.000Z

    The non-intrusive inspection (NII) of consolidated air cargo carried on commercial passenger aircraft continues to be a technically challenging, high-priority requirement of the Department of Homeland Security's Science and Technology Directorate (DHS S&T), the Transportation Security Agency and the Federal Aviation Administration. The goal of deploying a screening system that can reliably and cost-effectively detect explosive threats in consolidated cargo without adversely affecting the flow of commerce will require significant technical advances that will take years to develop. To address this critical National Security need, the Battelle Memorial Institute (Battelle), under a Cooperative Research and Development Agreement (CRADA) with four of its associated US Department of Energy (DOE) National Laboratories (Oak Ridge, Pacific Northwest, Idaho, and Brookhaven), conducted a research and development initiative focused on identifying, evaluating, and integrating technologies for screening consolidated air cargo for the presence of explosive threats. Battelle invested $8.5M of internal research and development funds during fiscal years 2007 through 2009. The primary results of this effort are described in this document and can be summarized as follows: (1) Completed a gap analysis that identified threat signatures and observables, candidate technologies for detection, their current state of development, and provided recommendations for improvements to meet air cargo screening requirements. (2) Defined a Commodity/Threat/Detection matrix that focuses modeling and experimental efforts, identifies technology gaps and game-changing opportunities, and provides a means of summarizing current and emerging capabilities. (3) Defined key properties (e.g., elemental composition, average density, effective atomic weight) for basic commodity and explosive benchmarks, developed virtual models of the physical distributions (pallets) of three commodity types and three explosive benchmarks combinations, and conducted modeling and simulation studies to begin populating the matrix of commodities, threats, and detection technologies. (4) Designed and fabricated basic (homogeneous) commodity test pallets and fabricated inert stimulants to support experiments and to validate modeling/simulation results. (5) Developed/expanded the team's capabilities to conduct full-scale imaging (neutron and x-ray) experiments of air cargo commodities and explosive benchmarks. (6) Conducted experiments to improve the collection of trace particles of explosives from a variety of surfaces representative of air cargo materials by means of mechanical (air/vibration/pressure), thermal, and electrostatic methods. Air cargo screening is a difficult challenge that will require significant investment in both research and development to find a suitable solution to ensure the safety of passengers without significantly hindering the flow of commodities. The initiative funded by Battelle has positioned this group to make major contributions in meeting the air cargo challenge by developing collaborations, developing laboratory test systems, improving knowledge of the challenges (both technical and business) for air cargo screening, and increasing the understanding of the capabilities for current inspection methods (x-ray radiography, x-ray backscatter, etc.) and potential future inspection methods (neutron radiography, fusion of detector modalities, advanced trace detection, etc.). Lastly, air cargo screening is still an issue that will benefit from collaboration between Department of Energy Laboratories and Battelle. On January 7, 2010, DHS Secretary Napolitano joined White House Press Secretary Robert Gibbs and Assistant to the President for Counterterrorism and Homeland Security John Brennan to announce several recommendations DHS has made to the President for improving the technology and procedures used to protect air travel from acts of terrorism. (This announcement followed the 25 Dec'09 Delta/Northwest Airlines Flight 253 terror attack.) Secretary Napolitano out

  14. Exploratory test of utility of magnetic insulation for electrostatic accelerators L. R. Grisham, A. von Halle, A. F. Carpe, Guy Rossi, K. R. Gilton et al.

    E-Print Network [OSTI]

    Gilson, Erik

    Exploratory test of utility of magnetic insulation for electrostatic accelerators L. R. Grisham, A;Exploratory test of utility of magnetic insulation for electrostatic accelerators L. R. Grisham,a) A. von a preliminary exploratory test of whether this magnetic insulation approach might be of benefit at a modest

  15. Electrostatically defined quantum dots in a Si/SiGe heterostructure This article has been downloaded from IOPscience. Please scroll down to see the full text article.

    E-Print Network [OSTI]

    Ludwig-Maximilians-Universität, München

    Electrostatically defined quantum dots in a Si/SiGe heterostructure This article has been of Physics Electrostatically defined quantum dots in a Si/SiGe heterostructure A Wild1 , J Sailer1 , J Nützel epitaxially grown Si/SiGe heterostructure. Transport and charge spectroscopy with an additional QD as well

  16. arXiv:1007.2404v1[cond-mat.mes-hall]14Jul2010 Electrostatically defined Quantum Dots in a Si/SiGe

    E-Print Network [OSTI]

    Ludwig-Maximilians-Universität, München

    arXiv:1007.2404v1[cond-mat.mes-hall]14Jul2010 Electrostatically defined Quantum Dots in a Si/SiGe (QD) realized in a molecular beam epitaxy grown Si/SiGe heterostructure. Transport and charge as a spin qubit. Our results promise the suitability of electrostatically defined QDs in Si/SiGe

  17. Electrocatalysts for Nonaqueous Lithium–Air Batteries:...

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

    Electrocatalysts for Nonaqueous Lithium–Air Batteries: Status, Challenges, and Perspective. Electrocatalysts for Nonaqueous Lithium–Air Batteries: Status, Challenges,...

  18. US--EC fuel cycle study: Background document to the approach and issues

    SciTech Connect (OSTI)

    Not Available

    1992-11-01T23:59:59.000Z

    In February 1991, DOE and the Commission of the European Communities (EC), signed a joint statement regarding the external costs of fuel cycles. This 18-month agreement committed their respective organizations to ``develop a comparative analytical methodology and to develop the best range of estimates of external costs from secondary sources`` for eight fuel cycles and four conservation options. In our study, a fuel cycle is defined as the series of physical and chemical processes and activities that are required to generate electricity from a specific fuel or resource. This foundation phase of the study is primarily limited to developing and demonstrating methods for estimating impacts and their monetized value, what we term ``damages`` or ``benefits,`` leaving aside the extent to which such damages have been internalized. However, Appendix C provides the conceptual framework for evaluating the extent of internalization. This report is a background document to introduce the study approach and to discuss the major conceptual and practical issues entailed by the incremental damage problem. As a background document, the report seeks to communicate an overview of the study and the important methodological choices that were made to conduct the research. In successive sections of the report, the methodological tools used in the study are discussed; the ecological and health impacts are reviewed using the coal fuel cycle as a reference case; and, in the final chapter, the methods for valuing impacts are detailed.

  19. US--EC fuel cycle study: Background document to the approach and issues

    SciTech Connect (OSTI)

    Not Available

    1992-11-01T23:59:59.000Z

    In February 1991, DOE and the Commission of the European Communities (EC), signed a joint statement regarding the external costs of fuel cycles. This 18-month agreement committed their respective organizations to develop a comparative analytical methodology and to develop the best range of estimates of external costs from secondary sources'' for eight fuel cycles and four conservation options. In our study, a fuel cycle is defined as the series of physical and chemical processes and activities that are required to generate electricity from a specific fuel or resource. This foundation phase of the study is primarily limited to developing and demonstrating methods for estimating impacts and their monetized value, what we term damages'' or benefits,'' leaving aside the extent to which such damages have been internalized. However, Appendix C provides the conceptual framework for evaluating the extent of internalization. This report is a background document to introduce the study approach and to discuss the major conceptual and practical issues entailed by the incremental damage problem. As a background document, the report seeks to communicate an overview of the study and the important methodological choices that were made to conduct the research. In successive sections of the report, the methodological tools used in the study are discussed; the ecological and health impacts are reviewed using the coal fuel cycle as a reference case; and, in the final chapter, the methods for valuing impacts are detailed.

  20. Quantitative Electrochemical Measurements using in situ ec-S/TEM Devices

    SciTech Connect (OSTI)

    Unocic, Raymond R [ORNL] [ORNL; Sacci, Robert L [ORNL] [ORNL; Brown, Gilbert M [ORNL] [ORNL; Veith, Gabriel M [ORNL] [ORNL; Dudney, Nancy J [ORNL] [ORNL; More, Karren Leslie [ORNL] [ORNL; Gardiner, Daniel [Protochips Inc., Raleigh, NC] [Protochips Inc., Raleigh, NC; Walden II, Franklin S [Protochips Inc., Raleigh, NC] [Protochips Inc., Raleigh, NC; Damiano, John [Protochips Inc., Raleigh, NC] [Protochips Inc., Raleigh, NC; Nackashi, David P. [Protochips Inc., Raleigh, NC] [Protochips Inc., Raleigh, NC

    2014-01-01T23:59:59.000Z

    Insight into dynamic electrochemical processes can be obtained with in situ ec-S/TEM, which utilizes microfluidic electrochemical cells to characterize electrochemical processes with S/TEM imaging, diffraction or spectroscopy. The microfluidic electrochemical cell is composed of microfabricated devices with glassy carbon and platinum microband electrodes in a three-electrode cell configuration. To establish the validity of this method for quantitative in situ electrochemistry research, cyclic voltammetry, choronoamperometry and electrochemical impedance spectroscopy were performed using a standard one electron transfer redox couple using a [Fe(CN)6]3-/4- based electrolyte. Established relationships of the electrode geometry and microfluidic conditions were fitted with cyclic voltammetry and chronoamperometic measurements of analyte diffusion coefficients and was found to agree with well-accepted values that are on the order of 10-5 cm2 s-1. Influence of the electron beam on electrochemical measurements was found to be negligible during CV scans where the current profile varied only within a few nA with the electron beam on and off which is well within the hysteresis between multiple CV scans. The combination of experimental results provides a validation that quantitative electrochemistry experiments can be performed with these small-scale microfluidic electrochemical cells provided that accurate geometrical electrode configurations, diffusion boundary layers and microfluidic conditions are accounted for.

  1. Regenerative air heater

    DOE Patents [OSTI]

    Hasselquist, P.B.; Baldner, R.

    1980-11-26T23:59:59.000Z

    A gas-cooled steel skirt is used to support a refractory cored brick matrix and dome structure in a high temperature regenerative air heater useful in magnetohydrodynamic power generation. The steel skirt thermally expands to accommodate the thermal expansion of the dome structure despite substantial temperature differential thereby reducing relative movement between the dome bricks. Gas cooling of the steel skirt allows the structure to operate above its normal temperature during clean-out cycles and also allows for the control of the thermal expansion of the steel skirt.

  2. Hot air drum evaporator

    DOE Patents [OSTI]

    Black, Roger L. (Idaho Falls, ID)

    1981-01-01T23:59:59.000Z

    An evaporation system for aqueous radioactive waste uses standard 30 and 55 gallon drums. Waste solutions form cascading water sprays as they pass over a number of trays arranged in a vertical stack within a drum. Hot dry air is circulated radially of the drum through the water sprays thereby removing water vapor. The system is encased in concrete to prevent exposure to radioactivity. The use of standard 30 and 55 gallon drums permits an inexpensive compact modular design that is readily disposable, thus eliminating maintenance and radiation build-up problems encountered with conventional evaporation systems.

  3. Regenerative air heater

    DOE Patents [OSTI]

    Hasselquist, Paul B. (Maple Grove, MN); Baldner, Richard (Minnetonka, MN)

    1982-01-01T23:59:59.000Z

    A gas-cooled steel skirt is used to support a refractory cored brick matrix and dome structure in a high temperature regenerative air heater useful in magnetohydrodynamic power generation. The steel skirt thermally expands to accommodate the thermal expansion of the dome structure despite substantial temperature differential thereby reducing relative movement between the dome bricks. Gas cooling of the steel skirt allows the structure to operate above its normal temperature during clean-out cycles and also allows for the control of the thermal expansion of the steel skirt.

  4. Abatement of Air Pollution: Prohibition of Air Pollution (Connecticut...

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

    Environmental Regulations Provider Department of Energy and Environmental Protection All air pollution not otherwise covered by these regulations is prohibited. Stationary sources...

  5. Abatement of Air Pollution: Air Pollution Control Equipment and...

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

    These regulations contain instructions for the operation and monitoring of air pollution control equipment, as well as comments on procedures in the event of equipment breakdown,...

  6. air surveillance air: Topics by E-print Network

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

    of California eScholarship Repository Summary: chamber, passive sampling, passive solar house, measurementhouse, we planed the distribution of fresh air, passivepassive...

  7. Type of presentation: Oral IT-11-O-1669 Electrostatic potential of single-layer graphene measured using

    E-Print Network [OSTI]

    Dunin-Borkowski, Rafal E.

    and other hydrocarbon contamination left on graphene from TEM specimen preparation. The edgesType of presentation: Oral IT-11-O-1669 Electrostatic potential of single-layer graphene measured, University of Limerick, Ireland 3 Email of the presenting author: shery.chang@fz-juelich.de Graphene

  8. Excitation and propagation of Electrostatic Ion Cyclotron waves in rf-sustained plasmas of interest to propulsion research

    E-Print Network [OSTI]

    Choueiri, Edgar

    it is thus necessary to heat these ions considerably. Various types of electrodeless plasma heating provideExcitation and propagation of Electrostatic Ion Cyclotron waves in rf-sustained plasmas of interest to propulsion research Rostislav Spektor and Edgar Y. Choueiri Electric Propulsion and Plasma Dynamics

  9. Introduction to Potential Energy Surfaces The non-relativistic, time-independent, electrostatic molecular Hamiltonian is comprised of

    E-Print Network [OSTI]

    Tchumper, Gregory S.

    Introduction to Potential Energy Surfaces The non-relativistic, time-independent, electrostatic molecular Hamiltonian is comprised of terms for the kinetic energy (T) and potential energy (V the Born-Oppenheimer approximation, the kinetic energy of the nuclei vanishes and the potential energy

  10. Multi-dimensional modelling of electrostatic force distance curve over dielectric surface: Influence of tip geometry and correlation with experiment

    SciTech Connect (OSTI)

    Boularas, A., E-mail: boularas@laplace.univ-tlse.fr; Baudoin, F.; Villeneuve-Faure, C. [LAPLACE (Laboratoire Plasma et Conversion d'Energie), Université de Toulouse, UPS, INPT, 118 route de Narbonne, 31062 Toulouse cedex 9 (France); Clain, S. [Universidade do Minho, Centro de Matemática, Campus de Gualtar, 4710 - 057 Braga (Portugal); Université Paul Sabatier, Institut de Mathématiques de Toulouse, 31062 Toulouse (France); Teyssedre, G. [LAPLACE (Laboratoire Plasma et Conversion d'Energie), Université de Toulouse, UPS, INPT, 118 route de Narbonne, 31062 Toulouse cedex 9 (France); CNRS, LAPLACE, F-31071 Toulouse (France)

    2014-08-28T23:59:59.000Z

    Electric Force-Distance Curves (EFDC) is one of the ways whereby electrical charges trapped at the surface of dielectric materials can be probed. To reach a quantitative analysis of stored charge quantities, measurements using an Atomic Force Microscope (AFM) must go with an appropriate simulation of electrostatic forces at play in the method. This is the objective of this work, where simulation results for the electrostatic force between an AFM sensor and the dielectric surface are presented for different bias voltages on the tip. The aim is to analyse force-distance curves modification induced by electrostatic charges. The sensor is composed by a cantilever supporting a pyramidal tip terminated by a spherical apex. The contribution to force from cantilever is neglected here. A model of force curve has been developed using the Finite Volume Method. The scheme is based on the Polynomial Reconstruction Operator—PRO-scheme. First results of the computation of electrostatic force for different tip–sample distances (from 0 to 600?nm) and for different DC voltages applied to the tip (6 to 20?V) are shown and compared with experimental data in order to validate our approach.

  11. International Micro Electro Mechanical Systems Conference, MEMS 2001, Interlaken, Switzerland, January 2001 1 AN ELECTROSTATIC INDUCTION MICROMOTOR

    E-Print Network [OSTI]

    Frechette, Luc G.

    thin-film stator. Testing has demonstrated a torque of 0.3 µNm at a rotation rate of 15,000 revolutions such as polysilicon surface micromachining and high-aspect ratio LIGA processing, MEMS electrostatic and magnetic

  12. Integrated low emission cleanup system for direct coal-fueled turbines (electrostatic agglomeration). Draft final technical report

    SciTech Connect (OSTI)

    Quimby, J.M.; Kumar, K.S.

    1992-12-31T23:59:59.000Z

    The objective of this contract was to investigate the removal of SO{sub x} and particulate matter from direct coal fired combustion gas streams at high temperature and high pressure conditions. This investigation was to be accomplished through a bench scale testing and evaluation program for SO{sub x} removal and the innovative particulate collection concept of particulate growth through electrostatic agglomeration followed by high efficiency mechanical collection. The process goal was to achieve control better than that required by 1979 New Source Performance Standards. During Phase I, the designs of the combustor and gas cleanup apparatus were successfully completed. Hot gas cleanup was designed to be accomplished at temperature levels between 1800{degrees} and 2500{degrees}F at pressures up to 15 atmospheres. The combustor gas flow rate could be varied between 0.2--0.5 pounds per second. The electrostatic agglomerator residence time could be varied between 0.25 to 3 seconds. In Phase II, all components were fabricated, and erected successfully. Test data from shakedown testing was obtained. Unpredictable difficulties in pilot plant erection and shakedown consumed more budget resources than was estimated and as a consequence DOE, METC, decided ft was best to complete the contract at the end of Phase II. Parameters studied in shakedown testing revealed that high-temperature high pressure electrostatics offers an alternative to barrier filtration in hot gas cleanup but more research is needed in successful system integration between the combustor and electrostatic agglomerator.

  13. Improvement of the chemical and physical stability of the EC1 domain of E-cadherin by blocking its disulfide-mediated dimerization

    E-Print Network [OSTI]

    Trivedi, Maulik

    2008-01-30T23:59:59.000Z

    CD studies 3.2.3.1 Intrinsic fluorescence emission spectroscopy studies 3.3. Results 3.3.1. Alkylation of EC1 3.3.2. Chemical stability of EC1-IN 55 56 56 65 65 73 77... and B chains of EC1 dimer xv 2.9a 2.9b 3.1a 3.1b 3.1c 3.1d 3.2a 3.2b 3.3a 3.3b 80 81 101 102 103 104 106 107...

  14. Electrostatic drift shocks and drift wave instability in inhomogeneous rotating electron-positron-ion plasmas

    SciTech Connect (OSTI)

    Haque, Q. [Theoretical Plasma Physics Division, PINSTECH P. O. Nilore, Islamabad (Pakistan) and National Centre for Physics, Islamabad (Pakistan)

    2012-09-15T23:59:59.000Z

    The electrostatic drift wave shocks are studied in inhomogeneous rotating e-p-i plasma of the pulsar atmosphere. In this regard, the dissipation due to ion-neutral collisions is considered, which facilitate the formation of shock structures. It is noticed that these structures can move with the velocity of the drift wave which is not possible without considering the rotational effects. Several limiting cases are also discussed. In addition, the drift wave instability is obtained when electrons and positrons could not cancel out the space charge effects along the magnetic field lines in the presence of electron-ion and positron-ion collisions. Further, it is found that this instability is sensitive to rotational frequency of the object. The importance of the results with relevance to astrophysical plasmas is also pointed out.

  15. Effects of electron exchange-correlation potential on electrostatic oscillations in single-walled carbon nanotubes

    SciTech Connect (OSTI)

    Khan, S. A., E-mail: sakhan@ncp.edu.pk; Hassan, Sunia [National Centre for Physics, Quaid-i-Azam University Campus, Islamabad 45320 (Pakistan)

    2014-05-28T23:59:59.000Z

    Using macroscopic quantum hydrodynamic formulation, we study the dispersion properties of electrostatic electron plasma oscillations in single-walled carbon nanotubes. The electrons and ions are considered uniformly distributed over the cylindrical surface of a nanotube thus forming a two-component (electron-ion) quantum plasma system. Electron degeneracy via Fermi-Dirac statistics as well as electron exchange and correlation effects is taken into account. It is found that the quantum (Bohm) potential arising due to fermionic nature of electrons and exchange-correlations effects has significant impact on the wave. The frequency of wave is influenced by variation in azimuthal index and radius of the nanotube. The results are analyzed numerically for typical systems for relatively longer wavelength waves and possible consequences are discussed. The results can be important in general understanding of the role of exchange-correlation potential in quantum hydrodynamic treatment of charge-carriers in nanotubes.

  16. Electrostatic solitary ion waves in dense electron-positron-ion magnetoplasma

    SciTech Connect (OSTI)

    Jehan, Nusrat [Department of Physics, Theoretical Plasma Physics Group, Quaid-i-Azam University, Islamabad 45320 (Pakistan); Pakistan Atomic Energy Commission, P.O. Box 1114, Islamabad 44000 (Pakistan); Salahuddin, M. [Pakistan Atomic Energy Commission, P.O. Box 1114, Islamabad 44000 (Pakistan); Mahmood, S. [Theoretical Plasma Physics Division, PINSTECH, P.O. Nilore, Islamabad 44000 (Pakistan); Mirza, Arshad M. [Department of Physics, Theoretical Plasma Physics Group, Quaid-i-Azam University, Islamabad 45320 (Pakistan)

    2009-04-15T23:59:59.000Z

    The nonlinear coupled ion-acoustic and ion-cyclotron waves propagating obliquely to the external magnetic field in dense collisionless electron-positron-ion magnetoplasma are investigated using Sagdeev potential method. A semiclassical approach is used. Electrons and positrons are treated as degenerate Fermi gases described by Thomas-Fermi density distribution and ions behave as classical gas. It is found that the presence of degenerate positrons in a dense Thomas-Fermi plasma significantly modifies the structure of solitary waves by restricting the electrostatic potential to a certain maximum value which depends upon the concentration of positrons in the system. It is also noted that only subsonic humplike solitary waves can exist and for a given angle of propagation, the presence of degenerate positrons diminishes the amplitude as well as width of the solitary wave.

  17. Modulational instability of electrostatic acoustic waves in an electron-hole semiconductor quantum plasma

    SciTech Connect (OSTI)

    Wang, Yunliang, E-mail: ylwang@ustb.edu.cn; Lü, Xiaoxia [Department of Physics, School of Mathematics and Physics, University of Science and Technology Beijing, Beijing 100083 (China)] [Department of Physics, School of Mathematics and Physics, University of Science and Technology Beijing, Beijing 100083 (China)

    2014-02-15T23:59:59.000Z

    The modulational instability of quantum electrostatic acoustic waves in electron-hole quantum semiconductor plasmas is investigated using the quantum hydrodynamic model, from which a modified nonlinear Schrödinger equation with damping effects is derived using the reductive perturbation method. Here, we consider the combined effects of quantum recoil, quantum degenerate pressures, as well as the exchange-correlation effect standing for the electrons (holes) spin. The modulational instability for different semiconductors (GaAs, GaSb, and InP) is discussed. The collision between electron (hole) and phonon is also investigated. The permitted maximum time for modulational instability and the damping features of quantum envelope solitary wave are all determined by the collision. The approximate solitary solution with damping effects is presented in weak collision limit. The damping properties were discussed by numerical method.

  18. High-Voltage Terminal Test of Test Stand for 1-MV Electrostatic Accelerator

    E-Print Network [OSTI]

    Park, Sae-Hoon

    2015-01-01T23:59:59.000Z

    The Korea Multipurpose Accelerator Complex (KOMAC) has been developing a 300-kV test stand for a 1-MV electrostatic accelerator ion source. The ion source and accelerating tube will be installed in a high-pressure vessel. The ion source in the high-pressure vessel is required to have a high reliability. The test stand has been proposed and developed to confirm the stable operating conditions of the ion source. The ion source will be tested at the test stand to verify the long-time operating conditions. The test stand comprises a 300-kV high-voltage terminal, a battery for the ion-source power, a 60-Hz inverter, 200-MHz RF power, a 5-kV extraction power supply, a 300-kV accelerating tube, and a vacuum system. The results of the 300-kV high-voltage terminal tests are presented in this paper.

  19. Spherical plasma oscillations in a reversed-polarity inertial-electrostatic confinement device

    SciTech Connect (OSTI)

    Tuft, C.; Khachan, J. [Plasma Physics, School of Physics, University of Sydney, New South Wales 2006 (Australia)

    2010-11-15T23:59:59.000Z

    A pulsed reversed-polarity inertial-electrostatic confinement device has been investigated experimentally using voltage and spectroscopic diagnostics. Large-amplitude oscillations were observed in the floating potential of the plasma immediately following the initiation of the discharge. It is postulated that the observations were the result of coherent ion oscillations within a harmonic potential well formed by a uniform electron density in the center of the device. A simple model of the system predicts the depth of this transient potential well to be approximately 100 V. Observations of the relative occupation of the third and fourth energy levels of hydrogen in the plasma indicated the formation of a Maxwellian electron energy distribution after 20 {mu}s. The results suggest a promising avenue toward a net fusion power gain by utilizing these oscillations to periodically compress and heat the plasma to thermonuclear densities and energies.

  20. Spherical ion oscillations in a positive polarity gridded inertial-electrostatic confinement device

    SciTech Connect (OSTI)

    Bandara, R.; Khachan, J. [Plasma Physics, School of Physics, University of Sydney, Camperdown, New South Wales 2006 (Australia)] [Plasma Physics, School of Physics, University of Sydney, Camperdown, New South Wales 2006 (Australia)

    2013-07-15T23:59:59.000Z

    A pulsed, positive polarity gridded inertial electrostatic confinement device has been investigated experimentally, using a differential emissive probe and potential traces as primary diagnostics. Large amplitude oscillations in the plasma current and plasma potential were observed within a microsecond of the discharge onset, which are indicative of coherent ion oscillations about a temporarily confined excess of recirculating electron space charge. The magnitude of the depth of the potential well in the established virtual cathode was determined using a differential emissive Langmuir probe, which correlated well to the potential well inferred from the ion oscillation frequency for both hydrogen and argon experiments. It was found that the timescale for ion oscillation dispersion is strongly dependent on the neutral gas density, and weakly dependent on the peak anode voltage. The cessation of the oscillations was found to be due to charge exchange processes converting ions to high velocity neutrals, causing the abrupt de-coherence of the oscillations through an avalanche dispersion in phase space.

  1. Head-on collisions of electrostatic solitons in multi-ion plasmas

    SciTech Connect (OSTI)

    Verheest, Frank [Sterrenkundig Observatorium, Universiteit Gent, Krijgslaan 281, B-9000 Gent (Belgium); School of Chemistry and Physics, University of KwaZulu-Natal, Durban 4000 (South Africa); Hellberg, Manfred A. [School of Chemistry and Physics, University of KwaZulu-Natal, Durban 4000 (South Africa); Hereman, Willy A. [Department of Applied Mathematics and Statistics, Colorado School of Mines, Golden, Colorado 80401-1887 (United States)

    2012-09-15T23:59:59.000Z

    Head-on collisions between two electrostatic solitons are dealt with by the Poincare-Lighthill-Kuo method of strained coordinates, for a plasma composed of a number of cold (positive and negative) ion species and Boltzmann electrons. The nonlinear evolution equations for both solitons and their phase shift due to the collision, resulting in time delays, are established. A Korteweg-de Vries description is the generic conclusion, except when the plasma composition is special enough to replace the quadratic by a cubic nonlinearity in the evolution equations, with concomitant repercussions on the phase shifts. Applications include different two-ion plasmas, showing positive or negative polarity solitons in the generic case. At critical composition, a combination of a positive and a negative polarity soliton is possible.

  2. Electrostatic potential variation on the flux surface and its impact on impurity transport

    E-Print Network [OSTI]

    García-Regaña, J M; Turkin, Y; Kleiber, R; Helander, P; Maaßberg, H; Alonso, J A; Velasco, J L

    2015-01-01T23:59:59.000Z

    The particle transport of impurities in magnetically confined plasmas under some conditions does not find, neither quantitatively nor qualitatively, a satisfactory theory-based explanation. This compromise the successful realization of thermo-nuclear fusion for energy production since its accumulation is known to be one of the causes that leads to the plasma breakdown. In standard reactor-relevant conditions this accumulation is in most stellarators intrinsic to the lack of toroidal symmetry, that leads to the neoclassical electric field to point radially inwards. This statement, that the standard theory allows to formulate, has been contradicted by some experiments that showed weaker or no accumulation under such conditions \\cite{Ida_pop_16_056111_2009, Yoshinuma_nf_49_062002_2009}. The charge state of the impurities makes its transport more sensitive to the electric fields. Thus, the short length scale turbulent electrostatic potential or its long wave-length variation on the flux surface $\\Phi_{1}$ -- that...

  3. A particle-in-cell approach to obliquely propagating electrostatic waves

    SciTech Connect (OSTI)

    Koen, Etienne J. [Space Commercial Services Holdings (SCSH) Group, Somerset West (South Africa); School of Electrical Engineering, Royal Institute of Technology (KTH), Stockholm (Sweden); South African National Space Agency (SANSA), Space Science, Hermanus (South Africa); Collier, Andrew B. [University of KwaZulu-Natal, Durban (South Africa); Exegetic Analytics, Durban (South Africa); Maharaj, Shimul K. [South African National Space Agency (SANSA), Space Science, Hermanus (South Africa)

    2014-09-15T23:59:59.000Z

    The electron-acoustic and beam-driven modes associated with electron beams have previously been identified and studied numerically. These modes are associated with Broadband Electrostatic Noise found in the Earth's auroral and polar cusp regions. Using a 1-D spatial Particle-in-Cell simulation, the electron-acoustic instability is studied for a magnetized plasma, which includes cool ions, cool electrons and a hot, drifting electron beam. Both the weakly and strongly magnetized regimes with varying wave propagation angle, ?, with respect to the magnetic field are studied. The amplitude and frequency of the electron-acoustic mode are found to decrease with increasing ?. The amplitude of the electron-acoustic mode is found to significantly grow at intermediate wavenumber ranges. It reaches a saturation level at the point, where a plateau forms in the hot electron velocity distribution after which the amplitude of the electron-acoustic mode decays.

  4. Study on space charge effect in an electrostatic ion analyzer applied to measure laser produced ions

    SciTech Connect (OSTI)

    Jin, Q. Y.; Li, Zh. M.; Liu, W. [Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000 (China) [Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000 (China); University of Chinese Academy of Sciences, Beijing 100049 (China); Zhao, H. Y., E-mail: zhaohy@impcas.ac.cn; Sha, S.; Zhang, J. J.; Zhang, X. Zh.; Sun, L. T.; Zhao, H. W. [Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000 (China)] [Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000 (China)

    2014-03-15T23:59:59.000Z

    The abundance of different ions produced by laser ion sources is usually analyzed by an electrostatic ion analyzer (EIA). Ion current intensities in the range of several mA/cm{sup 2} at the position of the EIA have been achieved from the laser ion source developed by the Institute of Modern Physics; this indicates that a noticeable influence of space charge effect during the ion transmission will occur. Hence, while the parameters of the EIA or the beams are changed, such as ion species, current intensity, the ions’ transmission efficiency through the EIA is different, which will result in an uncertainty in the estimation of the ions’ yields. Special attention is focused on this issue in this paper. Ion's transmissions through the EIA under different circumstances are studied with simulations and experiments, the results of which are consistent with each other.

  5. A unified electrostatic and cavitation model for first-principles molecular dynamics in solution

    E-Print Network [OSTI]

    Damian A. Scherlis; Jean-Luc Fattebert; Francois Gygi; Matteo Cococcioni; Nicola Marzari

    2005-10-06T23:59:59.000Z

    The electrostatic continuum solvent model developed by Fattebert and Gygi is combined with a first-principles formulation of the cavitation energy based on a natural quantum-mechanical definition for the surface of a solute. Despite its simplicity, the cavitation contribution calculated by this approach is found to be in remarkable agreement with that obtained by more complex algorithms relying on a large set of parameters. Our model allows for very efficient Car-Parrinello simulations of finite or extended systems in solution, and demonstrates a level of accuracy as good as that of established quantum-chemistry continuum solvent methods. We apply this approach to the study of tetracyanoethylene dimers in dichloromethane, providing valuable structural and dynamical insights on the dimerization phenomenon.

  6. Design and validation of a high-voltage levitation circuit for electrostatic accelerometers

    SciTech Connect (OSTI)

    Li, G.; Wu, S. C.; Zhou, Z. B.; Bai, Y. Z.; Hu, M.; Luo, J. [MOE Key Laboratory of Fundamental Physical Quantities Measurements, School of Physics, Huazhong University of Science and Technology, Wuhan, Hubei 430074 (China)] [MOE Key Laboratory of Fundamental Physical Quantities Measurements, School of Physics, Huazhong University of Science and Technology, Wuhan, Hubei 430074 (China)

    2013-12-15T23:59:59.000Z

    A simple high-voltage circuit with a voltage range of 0 to 900 V and an open-loop bandwidth of 11 kHz is realized by using an operational amplifier and a MOSFET combination. The circuit is used for the levitation of a test mass of 71 g, suspended below the top-electrodes with a gap distance of 57 ?m, so that the performance of an electrostatic accelerometer can be tested on the ground. The translation noise of the accelerometer, limited by seismic noise, is about 4 × 10{sup ?8} m/s{sup 2}/Hz{sup 1/2} at 0.1 Hz, while the high-voltage coupling noise is one-order of magnitude lower.

  7. Evaluation of an Electrostatic Dust Removal System with Potential Application in Next-Step Fusion Devices

    SciTech Connect (OSTI)

    Friesen, F. QL. [Grinnell College, 1115 8th Avenue, Grinnell, IA 50112-1616

    2011-01-20T23:59:59.000Z

    The ability to manage inventories of carbon, tritium, and high-Z elements in fusion plasmas depends on means for effective dust removal. A dust conveyor, based on a moving electrostatic potential well, was tested with particles of tungsten, carbon, glass and sand. A digital microscope imaged a representative portion of the conveyor, and dust particle size and volume distributions were derived before and after operation. About 10 mm3 volume of carbon and tungsten particles were moved in under 5 seconds. The highest driving amplitude tested of 3 kV was the most effective. The optimal driving frequency was 210 Hz (maximum tested) for tungsten particles, decreasing to below 60 Hz for the larger sand particles. Measurements of particle size and volume distributions after 10 and 100 cycles show the breaking apart of agglomerated carbon, and the change in particle distribution over short timescales (<1 s).

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

    SciTech Connect (OSTI)

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

    2010-05-13T23:59:59.000Z

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

  9. Electrostatics on the sphere with applications to Monte Carlo simulations of two dimensional polar fluids

    E-Print Network [OSTI]

    Jean-Michel Caillol

    2015-01-22T23:59:59.000Z

    We present two methods for solving the electrostatics of point charges and multipoles on the surface of a sphere, \\textit{i.e.} in the space $\\mathcal{S}_{2}$, with applications to numerical simulations of two-dimensional polar fluids. In the first approach, point charges are associated with uniform neutralizing backgrounds to form neutral pseudo-charges, while, in the second, one instead considers bi-charges, \\textit{i.e.} dumbells of antipodal point charges of opposite signs. We establish the expressions of the electric potentials of pseudo- and bi-charges as isotropic solutions of the Laplace-Beltrami equation in $\\mathcal{S}_{2}$. A multipolar expansion of pseudo- and bi-charge potentials leads to the electric potentials of mono- and bi-multipoles respectively. These potentials constitute non-isotropic solutions of the Laplace-Beltrami equation the general solution of which in spherical coordinates is recast under a new appealing form. We then focus on the case of mono- and bi-dipoles and build the theory of dielectric media in $\\mathcal{S}_{2}$. We notably obtain the expression of the static dielectric constant of a uniform isotropic polar fluid living in $\\mathcal{S}_{2}$ in term of the polarization fluctuations of subdomains of $\\mathcal{S}_{2}$. We also derive the long range behavior of the equilibrium pair correlation function under the assumption that it is governed by macroscopic electrostatics. These theoretical developments find their application in Monte Carlo simulations of the $2D$ fluid of dipolar hard spheres. Some preliminary numerical experiments are discussed with a special emphasis on finite size effects, a careful study of the thermodynamic limit, and a check of the theoretical predictions for the asymptotic behavior of the pair correlation function.

  10. Electrostatic models of electron-driven proton transfer across a lipid membrane

    E-Print Network [OSTI]

    Anatoly Yu. Smirnov; Lev G. Mourokh; Franco Nori

    2010-11-29T23:59:59.000Z

    We present two models for electron-driven uphill proton transport across lipid membranes, with the electron energy converted to the proton gradient via the electrostatic interaction. In the first model, associated with the cytochrome c oxidase complex in the inner mitochondria membranes, the electrostatic coupling to the site occupied by an electron lowers the energy level of the proton-binding site, making the proton transfer possible. In the second model, roughly describing the redox loop in a nitrate respiration of E. coli bacteria, an electron displaces a proton from the negative side of the membrane to a shuttle, which subsequently diffuses across the membrane and unloads the proton to its positive side. We show that both models can be described by the same approach, which can be significantly simplified if the system is separated into several clusters, with strong Coulomb interaction inside each cluster and weak transfer couplings between them. We derive and solve the equations of motion for the electron and proton creation/annihilation operators, taking into account the appropriate Coulomb terms, tunnel couplings, and the interaction with the environment. For the second model, these equations of motion are solved jointly with a Langevin-type equation for the shuttle position. We obtain expressions for the electron and proton currents and determine their dependence on the electron and proton voltage build-ups, on-site charging energies, reorganization energies, temperature, and other system parameters. We show that the quantum yield in our models can be up to 100% and the power-conversion efficiency can reach 35%.

  11. Oklahoma Clean Air Act (Oklahoma)

    Broader source: Energy.gov [DOE]

    This legislation establishes the authority for the Oklahoma Department of Environmental Quality to administer programs to maintain and monitor air quality across Oklahoma. The Department monitors...

  12. Nebraska Air Quality Regulations (Nebraska)

    Broader source: Energy.gov [DOE]

    These regulations, promulgated by the Department of Environmental Quality, contain provisions pertaining to ambient air quality standards, pollution source operating permits, emissions reporting,...

  13. An air line carries air at 800 kPa and 80C. An Air line ~ O O C insulated tank initially contains 20C air at a

    E-Print Network [OSTI]

    Huang, Haimei

    An air line carries air at 800 kPa and 80°C. An Air line ~ O O C insulated tank initially contains 20°C air at a pressure of 90kPa. The valve is opened, and air flows into the tank. Determine the final temperature of the air in the tank and the mass of air that enters the tank if the valve is left

  14. Reactive Air Aluminization

    SciTech Connect (OSTI)

    Choi, Jung-Pyung; Chou, Y. S.; Stevenson, Jeffry W.

    2011-10-28T23:59:59.000Z

    Ferritic stainless steels and other alloys are of great interest to SOFC developers for applications such as interconnects, cell frames, and balance of plant components. While these alloys offer significant advantages (e.g., low material and manufacturing cost, high thermal conductivity, and high temperature oxidation resistance), there are challenges which can hinder their utilization in SOFC systems; these challenges include Cr volatility and reactivity with glass seals. To overcome these challenges, protective coatings and surface treatments for the alloys are under development. In particular, aluminization of alloy surfaces offers the potential for mitigating both evaporation of Cr from the alloy surface and reaction of alloy constituents with glass seals. Commercial aluminization processes are available to SOFC developers, but they tend to be costly due to their use of exotic raw materials and/or processing conditions. As an alternative, PNNL has developed Reactive Air Aluminization (RAA), which offers a low-cost, simpler alternative to conventional aluminization methods.

  15. Air gun test evaluation

    SciTech Connect (OSTI)

    Carleton, J.J. II; Fox, L.; Rudy, C.R.

    1992-01-15T23:59:59.000Z

    A mechanical shock testing apparatus is used for testing the response of components subject to large accelerations in hostile environments. The test acceleration is provided by the impact of a bullet against a plate on which the component to be tested is mounted. This report describes a series of experiments that were performed to determine the dependence of the air gun test apparatus performance on incremental changes in the hardware configurations, changes in the pressure used to drive the bullet, and different accelerometers. The effect of variation of these experimental factors on the measured acceleration was determined using a Taguchi screening experimental design. Experimental settings were determined that can be used to operate the tester with a measured output within acceleration specifications.

  16. Inhalation intake of ambient air pollution in California's South Coast Air Basin

    E-Print Network [OSTI]

    Marshall, Julian D.; Granvold, Patrick W.; Hoats, Abigail S.; McKone, Thomas E.; Deakin, Elizabeth; Nazaroff, William W.

    2006-01-01T23:59:59.000Z

    survey data, and the air-pollution modeling group at Environfor vehicle-related air pollution exposure in minority andtotal health impact of air pollution. Urban planners often

  17. Data:0b1e6fc3-980d-401f-9c11-6e84eea3e8ec | Open Energy Information

    Open Energy Info (EERE)

    4eea3e8ec No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2....

  18. Data:66e1b726-44b6-4069-a1f4-877e072ec156 | Open Energy Information

    Open Energy Info (EERE)

    77e072ec156 No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2....

  19. Data:3657969b-2db9-41c3-ab35-ab5b4f2cc0ec | Open Energy Information

    Open Energy Info (EERE)

    5-ab5b4f2cc0ec No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information...

  20. ERIC MUSSEN PUBLICATIONS, CATEGORY 2 2000 Mussen, E.C. Extension apiculture in the United States. Proceedings of the 14th

    E-Print Network [OSTI]

    Ishida, Yuko

    . Proceedings of the 14th South American Seminar on Apiculture, pg. 19-21. 2001-4 Mussen, E. C. "from the U Web site. enntomology.ucdavis.edu/faculty/mussen.cfm. 2002 Mussen, E.C. Pollination. In Integrated

  1. Data:8d410eec-bd16-456e-901c-bf60ec1393d8 | Open Energy Information

    Open Energy Info (EERE)

    901c-bf60ec1393d8 No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic...

  2. Data:0b65710c-13b1-47fd-bb90-71e7e33ec332 | Open Energy Information

    Open Energy Info (EERE)

    7fd-bb90-71e7e33ec332 No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic...

  3. Data:0615c7e0-4eb7-425b-ae11-c8758ec78256 | Open Energy Information

    Open Energy Info (EERE)

    1-c8758ec78256 No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information...

  4. Protective supplied breathing air garment

    DOE Patents [OSTI]

    Childers, E.L.; Hortenau, E.F. von.

    1984-07-10T23:59:59.000Z

    A breathing air garment is disclosed for isolating a wearer from hostile environments containing toxins or irritants includes a suit and a separate head protective enclosure or hood engaging a suit collar in sealing attachment. The hood and suit collar are cylindrically shaped and dimensioned to enable the wearer to withdraw his hands from the suit sleeves to perform manual tasks within the hood interior. Breathing air is supplied from an external air line with an air delivery hose attached to the hood interior. The hose feeds air into an annular halo-like fiber-filled plenum having spaced discharge orifices attached to the hood top wall. A plurality of air exhaust/check valves located at the suit extremities cooperate with the hood air delivery system to provide a cooling flow of circulating air from the hood throughout the suit interior. A suit entry seal provided on the suit rear torso panel permits access into the suit and is sealed with an adhesive sealing flap. 17 figs.

  5. Environmental Aspects of Air Transportation

    E-Print Network [OSTI]

    Innovation Center #12;2 Aviation and Climate #12;3 Combustion Products Commercial jet fuel is essentially FOR AIR TRANSPORTATIONCENTER FOR AIR TRANSPORTATION SYSTEMS RESEARCHSYSTEMS RESEARCH Metron Aviation GMU, and the process inside real engines is considerably more complex. Typical emission rates for jet aircraft (grams

  6. D0 Instrument Air System

    SciTech Connect (OSTI)

    Serges, T.J.; /Fermilab

    1988-09-15T23:59:59.000Z

    The main function of the instrument air system is to operate control valves associated with the cryogenics in the D0 hall. Occasionally, it will be used for purging purposes. Appendix A shows a schematic of the air instrument system along with a corresponding components list.

  7. EMISSIONS TO AIR OPERATIONAL PROCEDURE

    E-Print Network [OSTI]

    Harman, Neal.A.

    and refrigeration equipment. To minimise pollution risks by ensuring regular maintenance of equipment containing Act 1993. SCOPE: All air-conditioning and refrigeration equipment METHOD: Air-conditioning and refrigeration equipment: 1. Swansea University uses equipment containing ozone-depleting substances

  8. ORIGINAL ARTICLE Ambient Air Pollution

    E-Print Network [OSTI]

    Mulholland, James A.

    ORIGINAL ARTICLE Ambient Air Pollution and Respiratory Emergency Department Visits Jennifer L. Peel pollution and respiratory outcomes. More refined assessment has been limited by study size and available air quality data. Methods: Measurements of 5 pollutants (particulate matter PM10 , ozone, nitrogen dioxide NO2

  9. Title III hazardous air pollutants

    SciTech Connect (OSTI)

    Todd, R.

    1995-12-31T23:59:59.000Z

    The author presents an overview of the key provisions of Title III of the Clean Air Act Amendments of 1990. The key provisions include the following: 112(b) -- 189 Hazardous Air Pollutants (HAP); 112(a) -- Major Source: 10 TPY/25 TPY; 112(d) -- Application of MACT; 112(g) -- Modifications; 112(I) -- State Program; 112(j) -- The Hammer; and 112(r) -- Accidental Release Provisions.

  10. Air Force Enhanced Use Lease

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

    S e r v i c e - E x c e l l e n c e Headquarters U.S. Air Force 1 Air Force Enhanced Use Lease Mr. Brian Brown 16 Oct. 12 I n t e g r i t y - S e r v i c e - E x c e l l e n c e 2...

  11. Air Force Renewable Energy Programs

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

    in All We Do" I n t e g r i t y - S e r v i c e - E x c e l l e n c e THINK GREEN, BUILD GREEN, Topics Air Force Energy Use Air Force Facility Energy Center Current RE...

  12. Charge trapping by anionic quinones electrostatically bound to a highly charged cationic quinone-viologen polymer or a cationic poly(3-viologen-thiophene)

    SciTech Connect (OSTI)

    Hable, C.T.; Crooks, R.M.; Valentine, J.R.; Giasson, R.; Wrighton, M.S. (Massachusetts Inst. of Technology, Cambridge (United States))

    1993-06-03T23:59:59.000Z

    Charge associated with quinone reduction is trapped at low pH in systems composed of sulfonated anthraquinones electrostatically bound to a polymer derived from a monomer consisting of a quinone unit flanked by two viologen units. Each monomer repeat unit carries 6 equiv of positive charge which can be charge compensated by monosulfonated anthraquinone to yield a quinone-viologen ratio of nearly 7:2. At low pH, electrostatic binding is persistent, and the amount of trapped charge is 90% of the theoretical maximum. Some of the electrostatically bound quinine can be replaced with Fe(CN)[sub 6][sup 3[minus

  13. Exact evaluation of the rates of electrostatic decay and scattering off thermal ions for an unmagnetized Maxwellian plasma

    SciTech Connect (OSTI)

    Layden, B.; Cairns, Iver H.; Robinson, P. A. [School of Physics, University of Sydney, Sydney, NSW 2006 (Australia)] [School of Physics, University of Sydney, Sydney, NSW 2006 (Australia)

    2013-08-15T23:59:59.000Z

    Electrostatic decay of Langmuir waves into Langmuir and ion sound waves (L?L?+S) and scattering of Langmuir waves off thermal ions (L+i?L?+i?, also called “nonlinear Landau damping”) are important nonlinear weak-turbulence processes. The rates for these processes depend on the quadratic longitudinal response function ?{sup (2)} (or, equivalently, the quadratic longitudinal susceptibility ?{sup (2)}), which describes the second-order response of a plasma to electrostatic wave fields. Previous calculations of these rates for an unmagnetized Maxwellian plasma have relied upon an approximate form for ?{sup (2)} that is valid where two of the wave fields are fast (i.e., v{sub ?}=?/k?V{sub e} where ? is the angular frequency, k is the wavenumber, and V{sub e} is the electron thermal speed) and one is slow (v{sub ?}?V{sub e}). Recently, an exact expression was derived for ?{sup (2)} that is valid for any phase speeds of the three waves in an unmagnetized Maxwellian plasma. Here, this exact ?{sup (2)} is applied to the calculation of the three-dimensional rates for electrostatic decay and scattering off thermal ions, and the resulting exact rates are compared with the approximate rates. The calculations are performed using previously derived three-dimensional rates for electrostatic decay given in terms of a general ?{sup (2)}, and newly derived three-dimensional rates for scattering off thermal ions; the scattering rate is derived assuming a Maxwellian ion distribution, and both rates are derived assuming arc distributions for the wave spectra. For most space plasma conditions, the approximate rate is found to be accurate to better than 20%; however, for sufficiently low Langmuir phase speeds (v{sub ?}/V{sub e}?3) appropriate to some spatial domains of the foreshock regions of planetary bow shocks and type II solar radio bursts, the use of the exact rate may be necessary for accurate calculations. The relative rates of electrostatic decay and scattering off thermal ions are calculated for a range of parameters using the exact expressions for the rates; electrostatic decay is found to have the larger growth rate over the whole range of parameters, consistent with previous approximate calculations.

  14. Air Leakage and Air Transfer Between Garage and Living Space

    SciTech Connect (OSTI)

    Rudd, A.

    2014-09-01T23:59:59.000Z

    This research project focused on evaluation of air transfer between the garage and living space in a single-family detached home constructed by a production homebuilder in compliance with the 2009 International Residential Code and the 2009 International Energy Conservation Code. The project gathered important information about the performance of whole-building ventilation systems and garage ventilation systems as they relate to minimizing flow of contaminated air from garage to living space. A series of 25 multi-point fan pressurization tests and additional zone pressure diagnostic testing characterized the garage and house air leakage, the garage-to-house air leakage, and garage and house pressure relationships to each other and to outdoors using automated fan pressurization and pressure monitoring techniques. While the relative characteristics of this house may not represent the entire population of new construction configurations and air tightness levels (house and garage) throughout the country, the technical approach was conservative and should reasonably extend the usefulness of the results to a large spectrum of house configurations from this set of parametric tests in this one house. Based on the results of this testing, the two-step garage-to-house air leakage test protocol described above is recommended where whole-house exhaust ventilation is employed. For houses employing whole-house supply ventilation (positive pressure) or balanced ventilation (same pressure effect as the Baseline condition), adherence to the EPA Indoor airPLUS house-to-garage air sealing requirements should be sufficient to expect little to no garage-to-house air transfer.

  15. Analysis of a Dedicated Outdoor Air System and Low Temperature Supply Air Conditioning System

    E-Print Network [OSTI]

    Guang, L.; Li, R.

    2006-01-01T23:59:59.000Z

    This paper presents the principles and the characteristics of a dedicated outdoor air system (DOAS) and low temperature supply air system. DOAS is offered based on the demands of indoor air quality and the low temperature supply air system...

  16. Public Health Air Surveillance Evaluation Project Public Health Air Surveillance Evaluation (PHASE) Project

    E-Print Network [OSTI]

    Public Health Air Surveillance Evaluation Project Public Health Air Surveillance Evaluation (PHASE) Project Evaluating, Developing, and Delivering Air Quality Characterization Data to Environmental Public Public Health Tracking (EPHT) Network. The EPA is developing routinely available air quality information

  17. Cold air distribution in office buildings: technology assessment for califonia

    E-Print Network [OSTI]

    Bauman, Fred; Borgers, T.; LaBerge, P.; Gadgil, A.

    1993-01-01T23:59:59.000Z

    room air with the cold supply air whenever the supplyroomair diffusion with cold supply air temperatures space

  18. AIR LEAKAGE OF NEWLY INSTALLED RESIDENTIAL WINDOWS

    E-Print Network [OSTI]

    Weidt, John

    2013-01-01T23:59:59.000Z

    Tables 2.0.2a 2.0.2b PAGE Air Leakage Through Sash/FrameOperation Types . . . . . Air Leakage of Installed WindowsComparison of Window Types Air Leakage Performance of

  19. Air movement preferences observed in office buildings

    E-Print Network [OSTI]

    2007-01-01T23:59:59.000Z

    Movement – Good or Bad? Indoor Air 14: 40-45. Toftum, J (Quality Survey. Indoor Air 14 (8): 65–74. Internationalon the Perception of Indoor Air Quality during Immediate and

  20. WearAir: Expressive T-shirts for Air Quality Sensing Sunyoung Kim and Eric Paulos

    E-Print Network [OSTI]

    Mankoff, Jennifer

    are less proactively concerned with air quality. AIR POLLUTANT: VOLATILE ORGANIC COMPOUNDS Different types of air pollutants contribute to air quality in different locations: Ozone, CO, NOx and VOCs are major contributors to outdoor air pollution; and particulate matters, VOCs, carbon monoxide and lead are common air

  1. Air pollution kills. So what? Air quality engineering to improve public health

    E-Print Network [OSTI]

    Levinson, David M.

    9/14/12 1 Air pollution kills. So what? Air quality engineering to improve public health;9/14/12 2 Air Quality Engineering H Air Quality Engineering H #12;9/14/12 3 Really? Air pollution running out of coffins and florists were running out of flowers. -- BBC #12;9/14/12 4 Air pollution

  2. Air Leakage of Furnaces and Air Handlers Iain S. Walker, Mike Lubliner, Darryl Dickerhoff,

    E-Print Network [OSTI]

    Air Leakage of Furnaces and Air Handlers of California. #12;1 Air Leakage of Furnaces and Air Handlers Iain S. Walker, LBNL Mike Lubliner, Washington been made in reducing air leakage in residential and to a lesser extent small commercial forced air

  3. U.S. Air Force Fact Sheet Air Force Reserve Officer Training Corps

    E-Print Network [OSTI]

    Su, Xiao

    U.S. Air Force Fact Sheet Air Force Reserve Officer Training Corps Mission Develop Quality Leaders for the Air Force. Personnel and Resources Air Force Reserve Officer Training Corps (ROTC) includes four,796 new Second Lieutenants who entered active duty in the United States Air Force. Organization Air Force

  4. Air-Con International: Noncompliance Determination and Proposed...

    Energy Savers [EERE]

    Notice of Noncompliance Determination to Air-Con International finding that a variety of central air conditioners and air conditioning heat pumps distributed under the Air-Con...

  5. TESTING OF AIR-FLOW WINDOWS FOR EVALUATION AND APPLICATION

    E-Print Network [OSTI]

    Boehm, R.F.

    2014-01-01T23:59:59.000Z

    PRESSURE: TAPS RETURN** REFERENCE** Return-Air ConditioningMakeup-Air Conditioning Energy a.Through Glass Return-Air Conditioning Energy Makeuo-Air

  6. air bags compared: Topics by E-print Network

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

    3. AIR TO AIR COMMUNICATION...3 4. SIMULATIONS Jain, Raj 435 Oil and Gas Air Heaters Texas A&M University - TxSpace Summary: Most conventional air...

  7. air entrainment: Topics by E-print Network

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

    3. AIR TO AIR COMMUNICATION...3 4. SIMULATIONS Jain, Raj 174 Oil and Gas Air Heaters Texas A&M University - TxSpace Summary: Most conventional air...

  8. air brakes: Topics by E-print Network

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

    3. AIR TO AIR COMMUNICATION...3 4. SIMULATIONS Jain, Raj 203 Oil and Gas Air Heaters Texas A&M University - TxSpace Summary: Most conventional air...

  9. al aire libre: Topics by E-print Network

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

    3. AIR TO AIR COMMUNICATION...3 4. SIMULATIONS Jain, Raj 162 Oil and Gas Air Heaters Texas A&M University - TxSpace Summary: Most conventional air...

  10. INEEL AIR MODELING PROTOCOL ext

    SciTech Connect (OSTI)

    C. S. Staley; M. L. Abbott; P. D. Ritter

    2004-12-01T23:59:59.000Z

    Various laws stemming from the Clean Air Act of 1970 and the Clean Air Act amendments of 1990 require air emissions modeling. Modeling is used to ensure that air emissions from new projects and from modifications to existing facilities do not exceed certain standards. For radionuclides, any new airborne release must be modeled to show that downwind receptors do not receive exposures exceeding the dose limits and to determine the requirements for emissions monitoring. For criteria and toxic pollutants, emissions usually must first exceed threshold values before modeling of downwind concentrations is required. This document was prepared to provide guidance for performing environmental compliance-driven air modeling of emissions from Idaho National Engineering and Environmental Laboratory facilities. This document assumes that the user has experience in air modeling and dose and risk assessment. It is not intended to be a "cookbook," nor should all recommendations herein be construed as requirements. However, there are certain procedures that are required by law, and these are pointed out. It is also important to understand that air emissions modeling is a constantly evolving process. This document should, therefore, be reviewed periodically and revised as needed. The document is divided into two parts. Part A is the protocol for radiological assessments, and Part B is for nonradiological assessments. This document is an update of and supersedes document INEEL/INT-98-00236, Rev. 0, INEEL Air Modeling Protocol. This updated document incorporates changes in some of the rules, procedures, and air modeling codes that have occurred since the protocol was first published in 1998.

  11. An electrostatic nanogenerator based on ZnO/ZnS core/shell electrets with stabilized quasi-permanent charge

    SciTech Connect (OSTI)

    Wang, Chao; Cai, Liang; Feng, Yajuan; Chen, Lin; Yan, Wensheng, E-mail: ywsh2000@ustc.edu.cn, E-mail: zhsun@ustc.edu.cn; Liu, Qinghua; Yao, Tao; Hu, Fengchun; Pan, Zhiyun; Sun, Zhihu, E-mail: ywsh2000@ustc.edu.cn, E-mail: zhsun@ustc.edu.cn; Wei, Shiqiang [National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui 230029 (China)

    2014-06-16T23:59:59.000Z

    ZnO-based nanogenerators with excellent performance and convenient functionalization are particularly desirable for self-powered technology, which is however difficult to achieve simultaneously in traditional piezoelectric ZnO nanogenerators. Here, we report a design of electrostatic ZnO nanogenerator by virtue of a type-II ZnO/ZnS core/shell nanostructure electrets, which can turn acoustic waves into electric power with an energy conversion efficiency of 2.2%. The ZnO/ZnS core/shell electrets are charged by ultraviolet irradiation with a long-term stability of the electrostatic charges under ambient condition. The electronic and atomic structure evolution in the charged ZnO/ZnS core/shell electrets are also discussed by detailed experimental and theoretical investigations. This design opens up an alternative path for fabricating robust ZnO-based nanogenerator for future nanotechnology application.

  12. Air Pollution Control Regulations: No. 22- Air Toxics (Rhode Island)

    Broader source: Energy.gov [DOE]

    Permits are required to construct, install, or modify any stationary source which has the potential to increase emissions of a listed toxic air contaminant by an amount greater than the minimum...

  13. Reference Inside KS1992 Tray Inside Air

    E-Print Network [OSTI]

    Llope, William J.

    Reference Inside KS1992 0.2 Tray Inside Air 0.5 Tray Inside Air 0.8 Tray Inside Air 0.2 Tray Side Wall Inner 0.2 Tray Side Wall Inner Under TAMP near sensor pos4 Under TAMP near sensor pos4 Air Gap Below TDIG pos1 Air Gap Below TDIG pos4 Air Gap Below TDIG pos6 HPTDC1 Chip pos6 HPTDC4 Chip pos6 HPTDC2

  14. Inertial impaction air sampling device

    DOE Patents [OSTI]

    Dewhurst, K.H.

    1987-12-10T23:59:59.000Z

    An inertial impactor to be used in an air sampling device for collection of respirable size particles in ambient air which may include a graphite furnace as the impaction substrate in a small-size, portable, direct analysis structure that gives immediate results and is totally self-contained allowing for remote and/or personal sampling. The graphite furnace collects suspended particles transported through the housing by means of the air flow system, and these particles may be analyzed for elements, quantitatively and qualitatively, by atomic absorption spectrophotometry. 3 figs.

  15. Inertial impaction air sampling device

    DOE Patents [OSTI]

    Dewhurst, K.H.

    1990-05-22T23:59:59.000Z

    An inertial impactor is designed which is to be used in an air sampling device for collection of respirable size particles in ambient air. The device may include a graphite furnace as the impaction substrate in a small-size, portable, direct analysis structure that gives immediate results and is totally self-contained allowing for remote and/or personal sampling. The graphite furnace collects suspended particles transported through the housing by means of the air flow system, and these particles may be analyzed for elements, quantitatively and qualitatively, by atomic absorption spectrophotometry. 3 figs.

  16. CSP Tower Air Brayton Combustor

    Broader source: Energy.gov [DOE]

    This fact sheet describes a concentrating solar power tower air Brayton combustor project awarded under the DOE's 2012 SunShot CSP R&D award program. The team, led by the Southwest Research Institute, is working to develop an external combustor that allows for the mixing of CSP-heated air with natural gas in hybridized power plants. This project aims to increase the temperature capabilities of the CSP tower air receiver and gas turbine to 1,000ºC and achieve energy conversion efficiencies greater than 50%.

  17. The investigation of exhaust powered, automotive air cycle air conditioning

    E-Print Network [OSTI]

    Holley, James Andrew

    1978-01-01T23:59:59.000Z

    domestic automobiles and trucks because of its proven success. This system requires approximately 4 hp (2. 983 kW)[3] for operation snd employs a pressurized fluorinated hydrocarbon (R-12), hereafter fluorocarbon, as a refrigerant. Most of the research... extraction and avoid the use of a fluorocarbon refrigerant. The maJority of work involved with the new units has associated itself in the area of utilizing an absorption cycle or air cycle. The absorption air conditioning unit differs significantly from...

  18. Comment on {open_quote}{open_quote}Optimization of electrostatic deflectors{close_quote}{close_quote} [J. Vac. Sci. Technol. B {bold 13}, 142 (1995)

    SciTech Connect (OSTI)

    Lencova, B. [Institute of Scientific Instruments, Academy of Sciences of the Czech Republic, Kralovopolska 147, 612 64 Brno (Czech Republic)] [Institute of Scientific Instruments, Academy of Sciences of the Czech Republic, Kralovopolska 147, 612 64 Brno (Czech Republic)

    1996-05-01T23:59:59.000Z

    It is contended that contrarily to the claim of Szilagyi and Cho (Ref. 1), thecoma of deflection as well as field curvature can not be eliminated in the optimized electrostatic deflectors. (AIP)

  19. Fast Neutral Generation by Charge Exchange Reaction and Its Effect on Neutron Production Rate in Inertial Electrostatic Confinement Fusion Systems

    SciTech Connect (OSTI)

    Yoshinaga, S.; Matsuura, H.; Nakao, Y.; Kudo, K. [Kyushu University (Japan)

    2005-05-15T23:59:59.000Z

    Fast neutral generation by charge exchange reaction in inertial electrostatic confinement plasmas is studied by solving the Poisson equation and the Boltzmann equation for fast neutrals. Fusion reactions carried by the charge exchange fast neutrals become appreciable compared with ion-background fusion reaction. It is shown that the fusion reaction between fast neutral and background gas is sensitively affected by experimental parameters (grid voltage, background gas pressure) and ion distribution function.

  20. Electrostatic soliton and double layer structures in unmagnetized degenerate pair plasmas

    SciTech Connect (OSTI)

    Mahmood, S. [Theoretical Plasma Physics Division (TPPD), PINSTECH, P.O. Nilore, Islamabad 44000 (Pakistan); National Centre for Physics, Quaid-i-Azam University Campus, Shahdra Valley Road, Islamabad 44000 (Pakistan); Department of Physics and Applied Mathematics (DPAM), PIEAS, P.O. Nilore, Islamabad 44000 (Pakistan); Khan, S. A. [National Centre for Physics, Quaid-i-Azam University Campus, Shahdra Valley Road, Islamabad 44000 (Pakistan); Department of Physics, COMSATS Institute of Information Technology (CIIT), Islamabad 44000 (Pakistan); Ur-Rehman, H. [Theoretical Plasma Physics Division (TPPD), PINSTECH, P.O. Nilore, Islamabad 44000 (Pakistan); Department of Physics and Applied Mathematics (DPAM), PIEAS, P.O. Nilore, Islamabad 44000 (Pakistan)

    2010-11-15T23:59:59.000Z

    The acoustic solitons and double layers are studied in unmagnetized quantum electron-positron plasmas in the presence of stationary ions. The quantum hydrodynamic model is employed and reductive perturbation method is used to derive the Korteweg-de Vries (KdV) and extended KdV equations for solitons and double layers, respectively. It is found that in the linear limit both slow acoustic and fast Langmuir waves can propagate in such type of quantum plasmas like in classical pair-ion or pair plasmas. The amplitude and width of the electrostatic solitons are found to be decreasing with the increase in concentration of positrons (or decrease in the concentration of ions) in degenerate electron-positron-ion plasmas. It is found that only rarefactive double layer can exist in such plasmas which depend on various parameters. The dependence of double layer structure on ion concentration and quantum diffraction effects of electrons and positrons are also discussed. The results are also elaborated graphically by considering dense plasma parameters in the outer layers of astrophysical objects such as white dwarfs and neutron stars.

  1. Modulation instability of low-frequency electrostatic ion waves in magnetized electron-positron-ion plasma

    SciTech Connect (OSTI)

    Jehan, Nusrat [Theoretical Plasma Physics Group, Department of Physics, Quaid-i-Azam University, Islamabad 45320 (Pakistan); Pakistan Atomic Energy Commission, P. O. Box 1114, Islamabad 44000 (Pakistan); Salahuddin, M. [Pakistan Atomic Energy Commission, P. O. Box 1114, Islamabad 44000 (Pakistan); Saleem, H. [PINSTECH (NPD), P. O. Nilore, Islamabad (Pakistan); Mirza, Arshad M. [Theoretical Plasma Physics Group, Department of Physics, Quaid-i-Azam University, Islamabad 45320 (Pakistan)

    2008-09-15T23:59:59.000Z

    The nonlinear amplitude modulation of low-frequency electrostatic ion waves propagating in collisionless magnetized electron-positron-ion plasma are studied. The Krylov-Bogoliubov-Mitropolsky perturbation method is employed to derive the nonlinear Schroedinger equation. Modulation instability of both ion-acoustic and ion-cyclotronlike modes is examined. We found that the ion-acoustic mode, which propagates below the ion-cyclotron frequency, is stable if the strength of the external magnetic field is small. However, as the strength of the magnetic field increases, this mode becomes modulationally unstable for a range of wave numbers and angles of propagation. This range increases as the strength of the magnetic field and/or positron density increases. For the ion-cyclotronlike mode, which propagates above the ion-cyclotron frequency, a number of stability/instability regions appear in the (k{sub c},{theta}) plane even for a very small value of the magnetic field. It is found that, for both modes, critical wave number k{sub c} separating the stability and instability regions, shifts towards higher values as the density of the positron increases.

  2. A comb-sampling method for enhanced mass analysis in linear electrostatic ion traps

    SciTech Connect (OSTI)

    Greenwood, J. B.; Kelly, O.; Calvert, C. R.; Duffy, M. J.; King, R. B.; Belshaw, L.; Graham, L.; Alexander, J. D.; Williams, I. D. [Centre for Plasma Physics, School of Mathematics and Physics, Queen's University Belfast, Belfast BT7 1NN (United Kingdom); Bryan, W. A. [Department of Physics, Swansea University, Swansea SA2 8PP (United Kingdom); Turcu, I. C. E.; Cacho, C. M.; Springate, E. [Central Laser Facility, STFC Rutherford Appleton Laboratory, Didcot, Oxfordshire OX11 0QX (United Kingdom)

    2011-04-15T23:59:59.000Z

    In this paper an algorithm for extracting spectral information from signals containing a series of narrow periodic impulses is presented. Such signals can typically be acquired by pickup detectors from the image-charge of ion bunches oscillating in a linear electrostatic ion trap, where frequency analysis provides a scheme for high-resolution mass spectrometry. To provide an improved technique for such frequency analysis, we introduce the CHIMERA algorithm (Comb-sampling for High-resolution IMpulse-train frequency ExtRAaction). This algorithm utilizes a comb function to generate frequency coefficients, rather than using sinusoids via a Fourier transform, since the comb provides a superior match to the data. This new technique is developed theoretically, applied to synthetic data, and then used to perform high resolution mass spectrometry on real data from an ion trap. If the ions are generated at a localized point in time and space, and the data is simultaneously acquired with multiple pickup rings, the method is shown to be a significant improvement on Fourier analysis. The mass spectra generated typically have an order of magnitude higher resolution compared with that obtained from fundamental Fourier frequencies, and are absent of large contributions from harmonic frequency components.

  3. Nonlinear Modulated Envelope Electrostatic Wavepacket Propagation in Space and Laboratory Plasmas

    SciTech Connect (OSTI)

    Kourakis, Ioannis; Shukla, Padma Kant [Institut fuer Theoretische Physik IV, Fakultaet fuer Physik und Astronomie, Ruhr-Universitaet Bochum, D-44780 Bochum (Germany)

    2004-12-01T23:59:59.000Z

    A brief review of the occurrence of amplitude modulated structures in space and laboratory plasmas is provided, followed by a theoretical analysis of the mechanism of carrier wave (self-) interaction, with respect to electrostatic plasma modes. A generic collisionless unmagnetized fluid model is employed. Both cold-(zero-temperature) and warm-(finite temperature) fluid descriptions are considered and compared. The weakly nonlinear oscillation regime is investigated by applying a multiple scale (reductive perturbation) technique and a Nonlinear Schroedinger Equation (NLSE) is obtained, describing the evolution of the slowly varying wave amplitude in time and space. The amplitude's stability profile reveals the possibility of modulational instability to occur under the influence of external perturbations. The NLSE admits exact localized envelope (solitary wave) solutions of bright (pulses) or dark (holes, voids) type, whose characteristics depend on intrinsic plasma parameters. The role of perturbation obliqueness (with respect to the propagation direction), finite temperature and -- possibly -- defect (dust) concentration is explicitly considered. The relevance of this description with respect to known electron-ion (e-i) as well as dusty (complex) plasma modes is briefly discussed.

  4. Dendrite-Free Lithium Deposition via Self-Healing Electrostatic Shield Mechanism

    SciTech Connect (OSTI)

    Ding, Fei; Xu, Wu; Graff, Gordon L.; Zhang, Jian; Sushko, Maria L.; Chen, Xilin; Shao, Yuyan; Engelhard, Mark H.; Nie, Zimin; Xiao, Jie; Liu, Xingjiang; Sushko, P. V.; Liu, Jun; Zhang, Jiguang

    2013-02-28T23:59:59.000Z

    Lithium metal batteries are called the “holy grail” of energy storage systems. However, lithium dendrite growth in these batteries has prevented their practical applications in the last 40 years. Here we show a novel mechanism which can fundamentally change the dendritic morphology of lithium deposition. A low concentration of the second cations (including ions of cesium, rubidium, potassium, and strontium) exhibits an effective reduction potential lower than the standard reduction potential of lithium ions when the chemical activities of these second cations are much lower than that of lithium ions. During lithium deposition, these second cations will form a self-healing electrostatic shield around the initial tip of lithium whenever it is formed. This shield will repel the incoming lithium ions and force them to deposit in the smoother region of the anode so a dendrite-free film is obtained. This mechanism is effective on dendrite prevention in both lithium metal and lithium ion batteries. They may also prevent dendrite growth in other metal batteries and have transformational impact on the smooth deposition in general electrodeposition processes.

  5. Influence of pH condition on colloidal suspension of exfoliated graphene oxide by electrostatic repulsion

    SciTech Connect (OSTI)

    Meng, Long-Yue [Department of Chemistry, Inha University, 253 Nam-gu, Incheon 402-751 (Korea, Republic of); Park, Soo-Jin, E-mail: sjpark@inha.ac.kr [Department of Chemistry, Inha University, 253 Nam-gu, Incheon 402-751 (Korea, Republic of)

    2012-02-15T23:59:59.000Z

    A facile chemical process is described to produce graphene oxide utilizing a zwitterions amino acid intermediate from graphite oxide sheets. 11-aminoundecanoic acid molecules were protonated to intercalate molecules into the graphite oxide sheets to achieve ion exchange, and the carboxyl groups were then ionized in a NaOH solution to exfoliate the graphite oxide sheets. In this way, the produced graphene oxide nanosheets were stably dispersed in water. The delaminated graphene nanosheets were confirmed by XRD, AFM, and TEM. XRD patterns indicated the d{sub 002}-spacing of the graphite greatly increased from 0.380 nm and 0.870 nm. AFM and TEM images showed that the ordered graphite crystal structure of graphene nanosheets was effectively exfoliated by this method. The prepared graphene nanosheets films showed 87.1% transmittance and a sheet resistance of 2.1 Multiplication-Sign 10{sup 3} {Omega}/square. - Graphical abstract: A stable graphene oxide suspension could be quickly prepared by exfoliating a graphite oxide suspension by a host-guest electrostatic repulsion in aqueous solution. Highlights: Black-Right-Pointing-Pointer Graphene nanosheets were prepared by a zwitterions amino acid intermediate from graphite oxide. Black-Right-Pointing-Pointer 11-aminoundecanoic acid was protonated to intercalate molecules into the graphene oxide to achieve ion exchange. Black-Right-Pointing-Pointer The d{sub 002}-spacing of the graphite oxide greatly increased from 0.330 nm to 0.415 nm after 11-aminoundecanoic acid treatment.

  6. Free electron laser with bunched relativistic electron beam and electrostatic longitudinal wiggler

    SciTech Connect (OSTI)

    Sepehri Javan, Nasser [Department of Physics, University of Mohaghegh Ardabili, P.O. Box 179, Ardabil (Iran, Islamic Republic of)

    2010-06-15T23:59:59.000Z

    The system of the nonlinear nonstationary equations describing spatial-temporal dynamics of the amplitudes of an undulator radiation and a space charge wave of a relativistic electron beam in the resonator is obtained. The electrostatic longitudinal wiggler is considered. A bunch of the electron beam injects to the resonator, at the ends of which two mirrors are placed. After the interaction of electrons of bunch with radiation in the presence of wiggler and after amplifying electromagnetic pulse, a part of radiation is reflected back by semitransparent mirror. Then, it reaches to the initial of the system where the other mirror is placed. Synchronously, when the pulse is reflecting, the other electron bunch enters to the resonator and interacts with the pulse. This operation has simulated until saturation of growth of the electromagnetic pulse. The dynamics of the problem is simulated by the method of macro particles. The dynamics of pulse amplification, motion of the electrons, and spectra of output radiation in each stage are simulated.

  7. Integrated low emission cleanup system for direct coal-fueled turbines (electrostatic agglomeration)

    SciTech Connect (OSTI)

    Quimby, J.M.

    1992-05-01T23:59:59.000Z

    The objective of this contract is to investigate the removal of SO[sub x] and particulate matter from direct coal-fired combustion gas streams at high temperature and high pressure conditions. This investigation will be accomplished through a bench-scale testing and evaluation program employing sorbent mixed with a coal-water slurry for SO[sub x] removal, and an innovative particulate control concept. The particulate control device utilizes electrostatic agglomeration followed by a high efficiency mechanical collector (cyclone). The process goal is to achieve particulate collection efficiency better than that required by the 1979 new source performance standards. An additional goal is to demonstrate 70% SO[sub x] removal efficiency. This research project is now in the second of a 3 phase (phase II) project. Phase II is to fabricate the combustor and particulate control devices and install the system at a test facility located at Research-Cottrell's, KVB Western Laboratory, Santa Ana, CA. There are three functional categories, or tasks which are to be completed in sequence. These tasks are itemized as follows: design, procurement, and installation, shakedown and startup, and reporting.

  8. Colorado Air Pollution Control Division - Construction Permits...

    Open Energy Info (EERE)

    search OpenEI Reference LibraryAdd to library Web Site: Colorado Air Pollution Control Division - Construction Permits Forms and Air Pollutant Emission Notices (APENs)...

  9. Covered Product Category: Residential Central Air Conditioners...

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

    Central Air Conditioners Covered Product Category: Residential Central Air Conditioners The Federal Energy Management Program (FEMP) provides acquisition guidance for residential...

  10. COMBUSTION-GENERATED INDOOR AIR POLLUTION

    E-Print Network [OSTI]

    Hollowell, C.D.

    2010-01-01T23:59:59.000Z

    The Status of Indoor Air Pollution Research 1976. GeometNovakov, T. : Formation of Pollution Particulate NitrogenGENERATED INDOOR AIR POLLUTION Dr. C. D. Hollowell, Dr. R.

  11. Stochastic Microenvironment Models for Air Pollution Exposure

    E-Print Network [OSTI]

    Naihua Duan

    2011-01-01T23:59:59.000Z

    human exposure to air pollution." SIMS Technical Report No.human exposure to air pollution." Environment International.Annual Meeting of the A i r Pollution Control Association,

  12. Cleaner Vehicles, Cleaner Fuel & Cleaner Air

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

    EPA Office of Transportation and Air Quality Cleaner Vehicles, Cleaner Fuel, & Cleaner Air Overview of the 2007 Heavy-Duty Engine & Low Sulfur Diesel Fuel Program 2 Presentation...

  13. Lab Breakthrough: Desiccant Enhanced Evaporative Air Conditioning...

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

    Desiccant Enhanced Evaporative Air Conditioning Lab Breakthrough: Desiccant Enhanced Evaporative Air Conditioning May 29, 2012 - 5:22pm Addthis This breakthrough combines desiccant...

  14. Electrostatic solitary structures in presence of non-thermal electrons and a warm electron beam on the auroral field lines

    SciTech Connect (OSTI)

    Singh, S. V. [Indian Institute of Geomagnetism, Navi Mumbai (India); School of Physics, University of Kwazulu-Natal, Durban (South Africa); Lakhina, G. S. [Indian Institute of Geomagnetism, Navi Mumbai (India); Bharuthram, R. [University of the Western Cape, Bellville (South Africa); Pillay, S. R. [School of Physics, University of Kwazulu-Natal, Durban (South Africa)

    2011-12-15T23:59:59.000Z

    Electrostatic solitary waves (ESWs) have been observed by satellites in the auroral region of the Earth's magnetosphere. These ESWs are found to be having both positive and negative electrostatic potentials. Using the Sagdeeev psuedo-potential technique, arbitrary amplitude electron-acoustic solitary waves/double layers are studied in an unmagnetized plasma consisting of non-thermally distributed hot electrons, fluid cold electrons, a warm electron beam, and ions. The inertia of the warm electrons, and not the beam speed, is essential for the existence of positive potential solitary structures. Existence domains for positive as well as negative potential electrostatic solitons/double layers are obtained. For the typical auroral region parameters, the electric field amplitude of the negative potential solitons is found to be in the range {approx}(3-30) mV/m and {approx}(5-80) mV/m for the positive potential solitons. For the negative potential solitons/double layers, the amplitudes are higher when their widths are smaller. On the other hand, the amplitude of the positive potential structures increase with their widths.

  15. Measuring time of flight of fusion products in an inertial electrostatic confinement fusion device for spatial profiling of fusion reactions

    SciTech Connect (OSTI)

    Donovan, D. C. [Sandia National Laboratories, 7011 East Avenue, Livermore, California 94550 (United States); Boris, D. R. [Naval Research Laboratory, 4555 Overlook Avenue, South West, Washington, DC 20375 (United States); Kulcinski, G. L.; Santarius, J. F. [Fusion Technology Institute, University of Wisconsin-Madison, 1500 Engineering Drive, Madison, Wisconsin 53706 (United States); Piefer, G. R. [Phoenix Nuclear Labs, 2555 Industrial Drive, Madison, Wisconsin 53713 (United States)

    2013-03-15T23:59:59.000Z

    A new diagnostic has been developed that uses the time of flight (TOF) of the products from a nuclear fusion reaction to determine the location where the fusion reaction occurred. The TOF diagnostic uses charged particle detectors on opposing sides of the inertial electrostatic confinement (IEC) device that are coupled to high resolution timing electronics to measure the spatial profile of fusion reactions occurring between the two charged particle detectors. This diagnostic was constructed and tested by the University of Wisconsin-Madison Inertial Electrostatic Confinement Fusion Group in the IEC device, HOMER, which accelerates deuterium ions to fusion relevant energies in a high voltage ({approx}100 kV), spherically symmetric, electrostatic potential well [J. F. Santarius, G. L. Kulcinski, R. P. Ashley, D. R. Boris, B. B. Cipiti, S. K. Murali, G. R. Piefer, R. F. Radel, T. E. Radel, and A. L. Wehmeyer, Fusion Sci. Technol. 47, 1238 (2005)]. The TOF diagnostic detects the products of D(d,p)T reactions and determines where along a chord through the device the fusion event occurred. The diagnostic is also capable of using charged particle spectroscopy to determine the Doppler shift imparted to the fusion products by the center of mass energy of the fusion reactants. The TOF diagnostic is thus able to collect spatial profiles of the fusion reaction density along a chord through the device, coupled with the center of mass energy of the reactions occurring at each location. This provides levels of diagnostic detail never before achieved on an IEC device.

  16. Missouri Air Conservation Law (Missouri)

    Broader source: Energy.gov [DOE]

    This law's purpose is to maintain the purity of the air resources of the state to protect the health, general welfare and physical property of the people, maximum employment and the full industrial...

  17. Kansas Air Quality Act (Kansas)

    Broader source: Energy.gov [DOE]

    No person shall construct, own, operate, install, alter or use any air contaminant emission stationary source which, in accordance with rules and regulations, the secretary finds may cause or...

  18. Kansas Air Quality Regulations (Kansas)

    Broader source: Energy.gov [DOE]

    All new air contaminant emission sources or alterations to emission sources that are required to be reported shall be in compliance with all applicable emission control regulations at the time that...

  19. Optimization of Air Conditioning Cycling

    E-Print Network [OSTI]

    Seshadri, Swarooph

    2012-10-19T23:59:59.000Z

    on a 3-ton residential air conditioner are then presented to intuitively understand the effect of expansion valve and evaporator fan cycling in a real system. A real time optimization method is explored and the feasibility, recommendations for a...

  20. Fuel Cell Systems Air Management

    E-Print Network [OSTI]

    Air Management Honeywell TIAX UTC Mechanology, LLC · Turbocompressor for PEM Fuel Cells · Hybrid-Machined Thin Film H2 Gas Sensors - ATMI · Sensor Development for PEM Fuel Cell Systems ­ Honeywell · Gallium

  1. Optimising the Fresh Air Economiser

    E-Print Network [OSTI]

    Biship, R.

    2013-01-01T23:59:59.000Z

    , S., ?Economizers in Air Handling Systems?, CED Engineering Course M01-014, Stony Point New York, 2000. Moser, D., ?Free Cooling: Don?t Let Savings Slip Away?, Portland Energy Conservation Inc., published in Building Operating Management.... New Zealand, Standard NZS 4303:1990, Ventilation for Acceptable Indoor Air Quality, Standards Association of New Zealand, Wellington. Portland Energy Conservation Inc., from Functional Testing Guide on website: (http...

  2. Completion Report for Well ER-EC-14, Corrective Action Units 101 and 102: Central and Western Pahute Mesa

    SciTech Connect (OSTI)

    None

    2013-03-05T23:59:59.000Z

    Well ER-EC-14 was drilled for the U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office in support of the Nevada Environmental Management Operations Underground Test Area (UGTA) Activity at the Nevada National Security Site (NNSS; formerly Nevada Test Site), Nye County, Nevada. The well was drilled in September and October 2012, as part of the Central and Western Pahute Mesa Corrective Action Unit Phase II drilling program. The primary purpose of the well was to provide detailed hydrogeologic information for the Fortymile Canyon composite hydrostratigraphic unit in the Timber Mountain moat area, within the Timber Mountain caldera complex, that will help address uncertainties within the Pahute Mesa–Oasis Valley hydrostratigraphic framework model. The main 55.9-centimeter (cm) hole was drilled to a total depth of 325.5 meters (m) and cased with 40.6-cm casing to 308.1 m. The hole diameter was then decreased to 37.5 cm, and drilling continued to a total depth of 724.8 m. The completion casing string, set to the depth of 690.9 m, consists of 16.8-cm stainless-steel casing hanging from 19.4-cm carbon-steel casing. The stainless-steel casing has two slotted intervals open to the Rainier Mesa Tuff. Two piezometer strings were installed in Well ER-EC-14. Both piezometer strings, each with one slotted interval, consist of 6.0-cm carbon-steel tubing at the surface, then cross over to 7.3-cm stainless-steel tubing just above the water table. The shallow piezometer string was landed at 507.8 m, and the deep piezometer string was landed at 688.6 m. Both piezometer strings are set to monitor groundwater within moderately to densely welded Rainier Mesa Tuff. Data collected during and shortly after hole construction include composite drill cuttings samples collected every 3.0 m, various geophysical logs, water quality (including tritium and other radionuclides) measurements, and water level measurements. The well penetrated 15.2 m of alluvium and 709.6 m of Tertiary volcanic rocks. The stratigraphy and general lithology were not as expected due to the position of Well ER-EC-14 relative to the buried caldera margins of the Timber Mountain caldera complex. The well is located inside the Rainier Mesa caldera, but outside the younger Ammonia Tanks caldera. On November 5, 2012, a preliminary fluid level in the shallow piezometer string was measured at the depth of 311.8 m. This water level depth was taken before installation of the bridge plug (to be placed within the main completion casing to separate the two slotted zones). Well development, hydrologic testing, and sampling, will be conducted at a later date. No tritium above levels detectable by field methods were encountered in this hole. All Fluid Management Plan (FMP) requirements for Well ER-EC-14 were met. Analysis of monitoring samples and FMP confirmatory samples indicated that fluids generated during drilling at Well ER-EC-14 met the FMP criteria for discharge to an unlined sump or designated infiltration area. All sanitary and hydrocarbon waste generated was properly handled and disposed of.

  3. pH-dependent charge trapping by quinones electrostatically bound in an electrode confined benzylviologen polymer

    SciTech Connect (OSTI)

    Not Available

    1989-02-23T23:59:59.000Z

    Anthraquinone-2,6-disulfonate, 2,6-AQ, and anthraquinone-2-sulfonate, 2-AQ, have been electrostatically bound in an electrode-confined N,N{prime}-bis(p-(trimethoxysilyl)benzyl)-4,4{prime}-bipyridinium-based polymer, (BPQ{sup 2+/+}){sub n}. Under all conditions in aqueous electrolyte it appears that charge transport via the quinone redox system, AQ/AQH{sub 2}, is too slow to allow direct access to all quinone centers in the polymer. Generally, all quinone centers are electrode accessible only via the BPQ{sup 2+/+} redox mediator. At pH 6.5 the electrochemistry of ((BPQ{sup 2+}){sub n}{center dot}(AQ){sub m}){sub surf} is approximately the superposition of the AQ solution electrochemistry and the electrochemistry of surface-confined (BPQ{sup 2+/+}){sub n} examined separately. At pH 1.0 the reduction potential of AQ shifts positive and (BPQ{sup 2+/+}){sub n} can only mediate the reduction of AQ to the 2e{sup {minus}}/2H{sup +} reduced form, AQH{sub 2}, since the oxidation of AQH{sub 2} by BPQ{sup 2+} is thermodynamically uphill. Therefore, the charge associated with the reduced quinone, AQH{sub 2}, remains trapped in analogy to previous reports of charge trapping in bilayer systems. The trapped charge is released from the ((BPQ{sup 2+}){sub n}{center dot}(AQ){sub m}){sub surf} system by a sudden increase in pH which changes the thermodynamics to allow oxidation of the AQH{sub 2} by the BPQ{sup 2+}.

  4. Nonlinear, stationary electrostatic ion cyclotron waves: Exact solutions for solitons, periodic waves, and wedge shaped waveforms

    SciTech Connect (OSTI)

    McKenzie, J. F. [Department of Mathematics, Statistics and Physics, Durban University of Technology, Steve Biko Campus, Durban 4001 (South Africa); School of Mathematical Sciences, University of KwaZulu-Natal, Private Bag: X54001, Durban 4001 (South Africa); Doyle, T. B. [Materials Research Division, iThemba LABS, P.O.Box 722, Somerset West, 7129, South Africa and School of Chemistry and Physics, University of KwaZulu-Natal, Private Bag: X54001, Durban 4001 (South Africa); Rajah, S. S. [Department of Mathematics, Statistics and Physics, Durban University of Technology, Steve Biko Campus, Durban 4001 (South Africa)

    2012-11-15T23:59:59.000Z

    The theory of fully nonlinear stationary electrostatic ion cyclotron waves is further developed. The existence of two fundamental constants of motion; namely, momentum flux density parallel to the background magnetic field and energy density, facilitates the reduction of the wave structure equation to a first order differential equation. For subsonic waves propagating sufficiently obliquely to the magnetic field, soliton solutions can be constructed. Importantly, analytic expressions for the amplitude of the soliton show that it increases with decreasing wave Mach number and with increasing obliquity to the magnetic field. In the subsonic, quasi-parallel case, periodic waves exist whose compressive and rarefactive amplitudes are asymmetric about the 'initial' point. A critical 'driver' field exists that gives rise to a soliton-like structure which corresponds to infinite wavelength. If the wave speed is supersonic, periodic waves may also be constructed. The aforementioned asymmetry in the waveform arises from the flow being driven towards the local sonic point in the compressive phase and away from it in the rarefactive phase. As the initial driver field approaches the critical value, the end point of the compressive phase becomes sonic and the waveform develops a wedge shape. This feature and the amplitudes of the compressive and rarefactive portions of the periodic waves are illustrated through new analytic expressions that follow from the equilibrium points of a wave structure equation which includes a driver field. These expressions are illustrated with figures that illuminate the nature of the solitons. The presently described wedge-shaped waveforms also occur in water waves, for similar 'transonic' reasons, when a Coriolis force is included.

  5. Air UCI Summer Training Program in Environmental

    E-Print Network [OSTI]

    Nizkorodov, Sergey

    Air UCI Summer Training Program in Environmental Chemistry for Science Teachers I. July 11 ­ July · Lectures by AirUCI faculty · Lab tours of AirUCI laboratories · Follow-up for several years Distribution Models and predictions. Syllabus: Lectures Every AirUCI faculty member is actively involved

  6. Experimental results of the QUENCH-16 bundle test on air ingress

    SciTech Connect (OSTI)

    Stuckert, J.; Steinbrueck, M. [Karlsruhe Inst. of Technology KIT, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen (Germany)

    2012-07-01T23:59:59.000Z

    The out-of-pile bundle experiment QUENCH-16 on air ingress was conducted in the electrically heated 21-rod QUENCH facility at KIT in July 2011. It was performed in the frame of the EC supported LACOMECO program. The test scenario included the oxidation of the Zircaloy-4 claddings in air following a limited pre-oxidation in steam, and involved a long period of oxygen starvation to promote interaction with the nitrogen. The primary aim was to examine the influence of the formed oxide layer structure on bundle coolability and hydrogen release during the terminal flooding phase. QUENCH-16 was thus a companion test to the earlier air ingress experiment, QUENCH-10, which was performed with strongly pre-oxidized bundle. Unlike QUENCH-10, significant temperature escalation and intensive hydrogen release were observed during the reflood phase. Post-test investigations of bundle cross sections reveal residual nitride traces at various elevations. The external part of the oxide scale is of porous structure due to re-oxidation of nitrides during reflood. Relative thick internal oxide scales underneath this porous layer and residual nitrides were formed during reflood. At lower bundle elevations frozen partially oxidized melt was detected, relocated from upper elevations. (authors)

  7. Meteorological Effects on Air/Fuel Ratio

    E-Print Network [OSTI]

    Ferri, J. L.

    1984-01-01T23:59:59.000Z

    ) where subscript 1 indicates at condition 1 and subsc 1pt 2 Indicates at condition 2. Solving for E gives 2 100. (E . 13) Example 1 A furnace with a pressure type ratio control sys~em is calibrated at 10% excess air with 30 of air. If the air... of ... 30 of ... 460? 590 oR Substituting in Equation 13 and solving for E gives 2 E = (100 ... 10) (:;~)II, - 100 = 3.3% excess ir. 2 If the furnace had been calibrated to 10% excess air with iOO of air, the % excess air with 30 of air would bJI 590 II...

  8. Chapter 22: Compressed Air Evaluation Protocol

    SciTech Connect (OSTI)

    Benton, N.

    2014-11-01T23:59:59.000Z

    Compressed-air systems are used widely throughout industry for many operations, including pneumatic tools, packaging and automation equipment, conveyors, and other industrial process operations. Compressed-air systems are defined as a group of subsystems composed of air compressors, air treatment equipment, controls, piping, pneumatic tools, pneumatically powered machinery, and process applications using compressed air. A compressed-air system has three primary functional subsystems: supply, distribution, and demand. Air compressors are the primary energy consumers in a compressed-air system and are the primary focus of this protocol. The two compressed-air energy efficiency measures specifically addressed in this protocol are: high-efficiency/variable speed drive (VSD) compressor replacing modulating compressor; compressed-air leak survey and repairs. This protocol provides direction on how to reliably verify savings from these two measures using a consistent approach for each.

  9. Considering Air Density in Wind Power Production

    E-Print Network [OSTI]

    Zénó Farkas

    2011-03-11T23:59:59.000Z

    In the wind power production calculations the air density is usually considered as constant in time. Using the CIPM-2007 equation for the density of moist air as a function of air temperature, air pressure and relative humidity, we show that it is worth taking the variation of the air density into account, because higher accuracy can be obtained in the calculation of the power production for little effort.

  10. Air Pollution 7.1 INTRODUCTION

    E-Print Network [OSTI]

    Kammen, Daniel M.

    CHAPTER 7 Air Pollution 7.1 INTRODUCTION 7.2 OVERVIEW OF EMISSIONS 7.3 THE CLEAN AIR ACT 7.4 THE POLLUTANT STANDARDS INDEX 7.5 CRITERIA POLLUTANTS 7.6 TOXIC AIR POLLUTANTS 7.7 AIR POLLUTION IN THE WORLD'S MEGACITIES 7.8 MOTOR VEHICLE EMISSIONS 7.9 STATIONARY SOURCES 7.10 AIR POLLUTION AND METEOROLOGY 7

  11. Considering Air Density in Wind Power Production

    E-Print Network [OSTI]

    Farkas, Zénó

    2011-01-01T23:59:59.000Z

    In the wind power production calculations the air density is usually considered as constant in time. Using the CIPM-2007 equation for the density of moist air as a function of air temperature, air pressure and relative humidity, we show that it is worth taking the variation of the air density into account, because higher accuracy can be obtained in the calculation of the power production for little effort.

  12. Lithium Ethylene Dicarbonate Identified as the Primary Product ofChemical and Electrochemical Reduction of EC in EC:EMC/1.2M LiPF6Electrolyte

    SciTech Connect (OSTI)

    Zhuang, Guorong V.; Xu, Kang; Yang, Hui; Jow, T. Richard; RossJr., Philip N.

    2005-05-11T23:59:59.000Z

    Lithium ethylene dicarbonate (CH2OCO2Li)2 was chemically synthesized and its Fourier Transform Infrared (FTIR) spectrum was obtained and compared with that of surface films formed on Ni after cyclic voltammetry (CV) in 1.2M lithium hexafluorophosphate(LiPF6)/ethylene carbonate (EC): ethyl methyl carbonate (EMC) (3:7, w/w) electrolyte and on metallic lithium cleaved in-situ in the same electrolyte. By comparison of IR experimental spectra with that of the synthesized compound, we established that the title compound is the predominant surface species in both instances. Detailed analysis of the IR spectrum utilizing quantum chemical (Hartree-Fock) calculations indicates that intermolecular association through O...Li...O interactions is very important in this compound. It is likely that the title compound in passivation layer has a highly associated structure, but the exact intermolecular conformation could not be established based on analysis of the IR spectrum.

  13. Numerical Analysis of a Cold Air Distribution System

    E-Print Network [OSTI]

    Zhu, L.; Li, R.; Yuan, D.

    2006-01-01T23:59:59.000Z

    Cold air distribution systems may reduce the operating energy consumption of air-conditioned air supply system and improve the outside air volume percentages and indoor air quality. However, indoor temperature patterns and velocity field are easily...

  14. Residential Forced Air System Cabinet Leakage and Blower Performance

    E-Print Network [OSTI]

    Walker, Iain S.

    2010-01-01T23:59:59.000Z

    Driven Unitary  Air?Conditioning and Heat Pump Equipment”.  Air Conditioning &  Air?source Heat Pump Equipment.  Air?apply to the air handlers of heat pumps and electric 

  15. Indoor Air Quality Poor indoor air quality comes from many sources. It can lead to having

    E-Print Network [OSTI]

    Indoor Air Quality Fact Sheet Poor indoor air quality comes from many sources. It can lead Indoor Air Pollutants · Molds · Pollen · Dander from pet fur · Secondhand smoke · Formaldehyde · Carbon such as cleaners and pesticides How to Improve Indoor Air Quality · Open windows when you can to let in fresh air

  16. About Nuccio Heating & Air Headquartered in Tampa, Florida, Nuccio Heating & Air serves

    E-Print Network [OSTI]

    Fisher, Kathleen

    a customer say, `you installed my first air conditioner - yourself!'" Nuccio Heating & Air serves commercialAbout Nuccio Heating & Air Headquartered in Tampa, Florida, Nuccio Heating & Air serves commercial ­ the majority being highly mobile ­ sell and service heating and air conditioning systems for the company

  17. High Energy Efficiency Air Conditioning

    SciTech Connect (OSTI)

    Edward McCullough; Patrick Dhooge; Jonathan Nimitz

    2003-12-31T23:59:59.000Z

    This project determined the performance of a new high efficiency refrigerant, Ikon B, in a residential air conditioner designed to use R-22. The refrigerant R-22, used in residential and small commercial air conditioners, is being phased out of production in developed countries beginning this year because of concerns regarding its ozone depletion potential. Although a replacement refrigerant, R-410A, is available, it operates at much higher pressure than R-22 and requires new equipment. R-22 air conditioners will continue to be in use for many years to come. Air conditioning is a large part of expensive summer peak power use in many parts of the U.S. Previous testing and computer simulations of Ikon B indicated that it would have 20 - 25% higher coefficient of performance (COP, the amount of cooling obtained per energy used) than R-22 in an air-cooled air conditioner. In this project, a typical new R-22 residential air conditioner was obtained, installed in a large environmental chamber, instrumented, and run both with its original charge of R-22 and then with Ikon B. In the environmental chamber, controlled temperature and humidity could be maintained to obtain repeatable and comparable energy use results. Tests with Ikon B included runs with and without a power controller, and an extended run for several months with subsequent analyses to check compatibility of Ikon B with the air conditioner materials and lubricant. Baseline energy use of the air conditioner with its original R-22 charge was measured at 90 deg F and 100 deg F. After changeover to Ikon B and a larger expansion orifice, energy use was measured at 90 deg F and 100 deg F. Ikon B proved to have about 19% higher COP at 90 deg F and about 26% higher COP at 100 deg F versus R-22. Ikon B had about 20% lower cooling capacity at 90 deg F and about 17% lower cooling capacity at 100 deg F versus R-22 in this system. All results over multiple runs were within 1% relative standard deviation (RSD). All of these values agree well with previous results and computer simulations of Ikon B performance versus R-22. The lower cooling capacity of Ikon B is not a concern unless a particular air conditioner is near its maximum cooling capacity in application. Typically, oversized A/C systems are installed by contractors to cover contingencies. In the extended run with Ikon B, which lasted about 4.5 months at 100 deg F ambient temperature and 68% compressor on time, the air conditioner performed well with no significant loss of energy efficiency. Post-run analysis of the refrigerant, compressor lubricant oil, compressor, compressor outlet tubing, and the filter/dryer showed minor effects but nothing that was considered significant. The project was very successful. All objectives were achieved, and the performance of Ikon B indicates that it can easily be retrofitted into R-22 air conditioners to give 15 - 20% energy savings and a 1 - 3 year payback of retrofit costs depending on location and use. Ikon B has the potential to be a successful commercial product.

  18. The Air-Fluorescence Yield

    E-Print Network [OSTI]

    F. Arqueros; F. Blanco; D. Garcia-Pinto; M. Ortiz; J. Rosado

    2008-07-30T23:59:59.000Z

    Detection of the air-fluorescence radiation induced by the charged particles of extensive air showers is a well-established technique for the study of ultra-high energy cosmic rays. Fluorescence telescopes provide a nearly calorimetric measure of the primary energy. Presently the main source of systematic uncertainties comes from our limited accuracy in the fluorescence yield, that is, the number of fluorescence photons emitted per unit of energy deposited in the atmosphere by the shower particles. In this paper the current status of our knowledge on the fluorescence yield both experimental an theoretical will be discussed.

  19. Leads Tactical Air Control Party (TACP) and Air Support

    E-Print Network [OSTI]

    Duchowski, Andrew T.

    leadership in the demanding environment of Joint operations -Meet medical standards for Ground Based Control as an ALO. Joint Air Operations Command and Control Course: The JAOC2C will provide the 13L ALO an overview, Ranger School, the Joint Operational Fires and Effects Course, and others. initiAL trAining AdvAnced tr

  20. Completion Report for Well ER-EC-12 Corrective Action Units 101 and 102: Central and Western Pahute Mesa

    SciTech Connect (OSTI)

    NSTec Environmental Management

    2011-04-30T23:59:59.000Z

    Well ER-EC-12 was drilled for the U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office in support of the Nevada Environmental Restoration Project at the Nevada National Security Site (formerly known as the Nevada Test Site), Nye County, Nevada. The well was drilled in June and July 2010 as part of the Pahute Mesa Phase II drilling program. The primary purpose of the well was to provide detailed hydrogeologic information in the Tertiary volcanic section in the area between Pahute Mesa and the Timber Mountain caldera complex that will help address uncertainties within the Pahute Mesa–Oasis Valley hydrostratigraphic model. In particular, the well was intended to help define the structural position and hydraulic parameters for volcanic aquifers potentially down-gradient from historic underground nuclear tests on Pahute Mesa. It may also be used as a long-term monitoring well.