Sample records for ambient temperature deg

  1. 350 400 450 500 550 Annealing Temperature (deg C)

    E-Print Network [OSTI]

    Maruyama, Shigeo

    0 20 40 350 400 450 500 550 G/DRatio Annealing Temperature (deg C) As grown Synthesis of peapods the encapsulation of fullerenes into SWNTs annealed at temperatures above 450C. [1] T. Shimada, et al., Appl. Phys

  2. ambient temperature secondary: Topics by E-print Network

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

    ambient Environmental Sciences and Ecology Websites Summary: heat production, Q heat loss, C conductance, Tb body temperature, and Ta ambient temperature...

  3. ambient temperature comportement: Topics by E-print Network

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

    ambient Environmental Sciences and Ecology Websites Summary: heat production, Q heat loss, C conductance, Tb body temperature, and Ta ambient temperature...

  4. ambient temperature creep: Topics by E-print Network

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

    ambient Environmental Sciences and Ecology Websites Summary: heat production, Q heat loss, C conductance, Tb body temperature, and Ta ambient temperature...

  5. ambient temperatures conditions: Topics by E-print Network

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

    ambient Environmental Sciences and Ecology Websites Summary: heat production, Q heat loss, C conductance, Tb body temperature, and Ta ambient temperature...

  6. ambient temperature cured: Topics by E-print Network

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

    ambient Environmental Sciences and Ecology Websites Summary: heat production, Q heat loss, C conductance, Tb body temperature, and Ta ambient temperature...

  7. ambient temperature lithium: Topics by E-print Network

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

    ambient Environmental Sciences and Ecology Websites Summary: heat production, Q heat loss, C conductance, Tb body temperature, and Ta ambient temperature...

  8. ambient temperature grown: Topics by E-print Network

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

    ambient Environmental Sciences and Ecology Websites Summary: heat production, Q heat loss, C conductance, Tb body temperature, and Ta ambient temperature...

  9. ambient temperature rechargeable: Topics by E-print Network

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

    ambient Environmental Sciences and Ecology Websites Summary: heat production, Q heat loss, C conductance, Tb body temperature, and Ta ambient temperature...

  10. Effects of Ambient Density and Temperature on Soot Formation...

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

    Density and Temperature on Soot Formation under High-EGR Conditions Effects of Ambient Density and Temperature on Soot Formation under High-EGR Conditions Presentation given at...

  11. ambient high temperature: Topics by E-print Network

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

    between 25C and 27C. The types of modules 3 Terminology Poikilotherms body temperature ambient Environmental Sciences and Ecology Websites Summary: heat production, Q ...

  12. Water Power Calculator Temperature and Analog Input/Output Module Ambient Temperature Testing

    SciTech Connect (OSTI)

    Mark D. McKay

    2011-02-01T23:59:59.000Z

    Water Power Calculator Temperature and Analog input/output Module Ambient Temperature Testing A series of three ambient temperature tests were conducted for the Water Power Calculator development using the INL Calibration Laboratory’s Tenney Environmental Chamber. The ambient temperature test results demonstrate that the Moore Industries Temperature Input Modules, Analog Input Module and Analog Output Module, ambient temperature response meet or exceed the manufactures specifications

  13. Effect of Gas Turbine Exhaust Temperature, Stack Temperature and Ambient Temperature on Overall Efficiency of Combine Cycle Power Plant

    E-Print Network [OSTI]

    unknown authors

    Abstract—The gas turbine exhaust temperature, stack temperature and ambient temperature play a very important role during the predication of the performance of combine cycle power plant. This paper covers parametric analysis of effects of gas turbine exhaust temperature, stack temperature and ambient temperature on the overall efficiency of combine cycle power plant keeping the gas turbine efficiency as well as steam turbine efficiency constant. The results shows that out of three variables i.e. turbine exhaust temperature, stack temperature and ambient temperature, the most dominating factor of increasing the overall efficiency of the combine cycle power plant is the stack temperature.

  14. Ambient temperature cadmium zinc telluride radiation detector and amplifier circuit

    DOE Patents [OSTI]

    McQuaid, James H. (Livermore, CA); Lavietes, Anthony D. (Hayward, CA)

    1998-05-29T23:59:59.000Z

    A low noise, low power consumption, compact, ambient temperature signal amplifier for a Cadmium Zinc Telluride (CZT) radiation detector. The amplifier can be used within a larger system (e.g., including a multi-channel analyzer) to allow isotopic analysis of radionuclides in the field. In one embodiment, the circuit stages of the low power, low noise amplifier are constructed using integrated circuit (IC) amplifiers , rather than discrete components, and include a very low noise, high gain, high bandwidth dual part preamplification stage, an amplification stage, and an filter stage. The low noise, low power consumption, compact, ambient temperature amplifier enables the CZT detector to achieve both the efficiency required to determine the presence of radio nuclides and the resolution necessary to perform isotopic analysis to perform nuclear material identification. The present low noise, low power, compact, ambient temperature amplifier enables a CZT detector to achieve resolution of less than 3% full width at half maximum at 122 keV for a Cobalt-57 isotope source. By using IC circuits and using only a single 12 volt supply and ground, the novel amplifier provides significant power savings and is well suited for prolonged portable in-field use and does not require heavy, bulky power supply components.

  15. Ambient temperature cadmium zinc telluride radiation detector and amplifier circuit

    DOE Patents [OSTI]

    McQuaid, J.H.; Lavietes, A.D.

    1998-05-26T23:59:59.000Z

    A low noise, low power consumption, compact, ambient temperature signal amplifier for a Cadmium Zinc Telluride (CZT) radiation detector is disclosed. The amplifier can be used within a larger system (e.g., including a multi-channel analyzer) to allow isotopic analysis of radionuclides in the field. In one embodiment, the circuit stages of the low power, low noise amplifier are constructed using integrated circuit (IC) amplifiers , rather than discrete components, and include a very low noise, high gain, high bandwidth dual part preamplification stage, an amplification stage, and an filter stage. The low noise, low power consumption, compact, ambient temperature amplifier enables the CZT detector to achieve both the efficiency required to determine the presence of radionuclides and the resolution necessary to perform isotopic analysis to perform nuclear material identification. The present low noise, low power, compact, ambient temperature amplifier enables a CZT detector to achieve resolution of less than 3% full width at half maximum at 122 keV for a Cobalt-57 isotope source. By using IC circuits and using only a single 12 volt supply and ground, the novel amplifier provides significant power savings and is well suited for prolonged portable in-field use and does not require heavy, bulky power supply components. 9 figs.

  16. Preferred temperature of bluegill, Lepomis macrochirus, relative to changing ambient temperature

    E-Print Network [OSTI]

    Hagar, Arthur Freeman

    1978-01-01T23:59:59.000Z

    -Changes in Ambient Tempezature Figure 5. Relationship of Rate Parameters KC and KW to 21 23 Ambient Tempezatuze Figure 6. Relationship of the Time-Lag Parameter, LAMBDA, to Ambient Temperature 36 Figure 7. Relative Contribution of' the "Warm" (BWE) and "Cold... and cold components of temperature preference are treated separately in the simulation model. Their steaQ-state contributions 39 to TP, which were labeled BWE and BCE, were computed. by 1) arbitrarily setting BWE=O. O C at TA=10. 0 0 and BCE=O. O C...

  17. Photoelectron Spectroscopy under Ambient Pressure and Temperature Conditions

    SciTech Connect (OSTI)

    Ogletree, D. Frank; Bluhm, Hendrik; Hebenstreit, Eleonore B.; Salmeron, Miquel

    2009-02-27T23:59:59.000Z

    We describe the development and applications of novel instrumentation for photoemission spectroscopy of solid or liquid surfaces in the presence of gases under ambient conditions or pressure and temperature. The new instrument overcomes the strong scattering of electrons in gases by the use of an aperture close to the surface followed by a differentially-pumped electrostatic lens system. In addition to the scattering problem, experiments in the presence of condensed water or other liquids require the development of special sample holders to provide localized cooling. We discuss the first two generations of Ambient Pressure PhotoEmission Spectroscopy (APPES) instruments developed at synchrotron light sources (ALS in Berkeley and BESSY in Berlin), with special focus on the Berkeley instruments. Applications to environmental science and catalytic chemical research are illustrated in two examples.

  18. Sub-to super-ambient temperature programmable microfabricated gas chromatography column

    DOE Patents [OSTI]

    Robinson, Alex L.; Anderson, Lawrence F.

    2004-03-16T23:59:59.000Z

    A sub- to super-ambient temperature programmable microfabricated gas chromatography column enables more efficient chemical separation of chemical analytes in a gas mixture by combining a thermoelectric cooler and temperature sensing on the microfabricated column. Sub-ambient temperature programming enables the efficient separation of volatile organic compounds and super-ambient temperature programming enables the elution of less volatile analytes within a reasonable time. The small heat capacity and thermal isolation of the microfabricated column improves the thermal time response and power consumption, both important factors for portable microanalytical systems.

  19. Cage assembly of DegP protease is not required for substrate-dependent regulation of proteolytic activity or high-temperature cell survival

    E-Print Network [OSTI]

    Kim, Seokhee

    DegP, a member of the highly conserved HtrA family, performs quality-control degradation of misfolded proteins in the periplasm of Gram-negative bacteria and is required for high-temperature survival of Escherichia coli. ...

  20. Effect of Ambient Design Temperature on Air-Cooled Binary Plant Output

    SciTech Connect (OSTI)

    Dan Wendt; Greg Mines

    2011-10-01T23:59:59.000Z

    Air-cooled binary plants are designed to provide a specified level of power production at a particular air temperature. Nominally this air temperature is the annual mean or average air temperature for the plant location. This study investigates the effect that changing the design air temperature has on power generation for an air-cooled binary plant producing power from a resource with a declining production fluid temperature and fluctuating ambient temperatures. This analysis was performed for plants operating both with and without a geothermal fluid outlet temperature limit. Aspen Plus process simulation software was used to develop optimal air-cooled binary plant designs for specific ambient temperatures as well as to rate the performance of the plant designs at off-design operating conditions. Results include calculation of annual and plant lifetime power generation as well as evaluation of plant operating characteristics, such as improved power generation capabilities during summer months when electric power prices are at peak levels.

  1. ambient temperature shocks: Topics by E-print Network

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

    NANOLAMINATES . Open Access Theses and Dissertations Summary: ??To characterize the self-propagating, high-temperature exothermic alloying reactions of NiAl nanoscaled...

  2. ambient temperature rise: Topics by E-print Network

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

    July 10, 2013 Research National Laboratory-University of New Mexico studies. 3:20 Global warming accelerates drought 4 Computational analysis of temperature rise phenomena...

  3. ambient temperature synthesis: Topics by E-print Network

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

    of IPMC actuators under Tan, Xiaobo 57 ISSN 1061-3862, International Journal of Self-Propagating High-Temperature Synthesis, 2007, Vol. 16, No. 3, pp. 154168. Allerton Press,...

  4. Dependence of electric strength on the ambient temperature

    SciTech Connect (OSTI)

    ?aja, Alexander, E-mail: alexander.caja@fstroj.uniza.sk, E-mail: patrik.nemec@fstroj.uniza.sk, E-mail: milan.malcho@fstroj.uniza.sk; Nemec, Patrik, E-mail: alexander.caja@fstroj.uniza.sk, E-mail: patrik.nemec@fstroj.uniza.sk, E-mail: milan.malcho@fstroj.uniza.sk; Malcho, Milan, E-mail: alexander.caja@fstroj.uniza.sk, E-mail: patrik.nemec@fstroj.uniza.sk, E-mail: milan.malcho@fstroj.uniza.sk [University of Žilina, Faculty of Mechanical Engineering, Department of Power Engeneering, Univerzitná 1, 010 26 Žilina (Slovakia)

    2014-08-06T23:59:59.000Z

    At present, the volume concentration of electronic components in their miniaturization to different types of microchips and increasing their performance raises the problem of cooling such elements due to the increasing density of heat flow of heat loss. Compliance with safe operating temperature of active semiconductor element is very closely related to the reliability and durability not only components, but also the entire device. Often it is also necessary to electrically isolate the unit from the side of the cooler air. Cooling demand by natural convection is typical for applications with high operating reliability. To the reliability of the system for removing heat loss increased, it is necessary to minimize need to use the mechanically or electrically powered elements, such as circulation pumps or fans. Experience to date with applications of heat pipe in specific systems appears to be the most appropriate method of cooling.

  5. Temperatures in ambient mantle and plumes: Constraints from basalts, picrites, and komatiites

    E-Print Network [OSTI]

    below oceanic ridges, islands, and plateaus, on the basis of the petrology and geochemistry of erupted plumes; ambient mantle temperatures; petrology; mid ocean ridge basalt. Index Terms: 3610 Mineralogy and Petrology: Geochemical modeling (1009, 8410); 3619 Mineralogy and Petrology: Magma genesis and partial

  6. On-road evaluation of advanced hybrid electric vehicles over a wide range of ambient temperatures.

    SciTech Connect (OSTI)

    Carlson, R.; Duoba, M. J.; Bocci, D.; Lohse-Busch, H. (Energy Systems)

    2007-01-01T23:59:59.000Z

    In recent years, Hybrid Electric Vehicles (HEV's) have become a production viable and effective mode of efficient transportation. HEV's can provide increased fuel economy over convention technology vehicle, but these advantages can be affected dramatically by wide variations in operating temperatures. The majority of data measured for benchmarking HEV technologies is generated from ambient test cell temperatures at 22 C. To investigate cold and hot temperature affects on HEV operation and efficiency, an on-road evaluation protocol is defined and conducted over a six month study at widely varying temperatures. Two test vehicles, the 2007 Toyota Camry HEV and 2005 Ford Escape HEV, were driven on a pre-defined urban driving route in ambient temperatures ranging from -14 C to 31 C. Results from the on-road evaluation were also compared and correlated to dynamometer testing of the same drive cycle. Results from this on-road evaluation show the battery power control limits and engine operation dramatically change with temperature. These changes decrease fuel economy by more than two times at -14 C as compared to 25 C. The two vehicles control battery temperature in different manners. The Escape HEV uses the air conditioning system to provide cool air to the batteries at high temperatures and is therefore able to maintain battery temperature to less than 33 C. The Camry HEV uses cabin air to cool the batteries. The observed maximum battery temperature was 44 C.

  7. Development of integrated thermionic circuits for high-temperature applications. [Operation to 500/sup 0/C ambient temperature

    SciTech Connect (OSTI)

    McCormick, J.B.; Wilde, D.; Depp, S.; Hamilton, D.J.; Kerwin, W.; Derouin, C.; Roybal, L.; Dooley, R.

    1981-01-01T23:59:59.000Z

    A class of devices known as integrated thermionic circuits (ITC) capable of extended operation in ambient temperatures up to 500/sup 0/C is described. The evolution of the ITC concept is discussed. A set of practical design and performance equations is demonstrated. Recent experimental results are discussed in which both devices and simple circuits have successfully operated in 500/sup 0/C environments for extended periods of time.

  8. Effects of dietary phosphorus and high ambient temperature on egg shell quality in hens

    E-Print Network [OSTI]

    Bailey, Christopher Anthony

    1979-01-01T23:59:59.000Z

    EFFECTS OF DIETARY PHOSPHORUS AND HIG11 AMB1ENT TEMPERATURE ON EGG SHELL QUALITY IN HENS A Thesis by CHRISTOPHER ANTHONY BAI1EEY Submitted to the Graduate College of Texas A@I University in Partial fuI. fillme ~t of the requirement... for the degree of F1ASTER OF SCIENCE May 19 79 Major Subject: Poultry Science EFFECTS OF DIETARY PHOSPHORUS AND HIGH AMBIENT TEMPERATURE ON EGG SHELL QUALITY IN HENS A Thesis by CHRISTOPHER ANTHONY BAILEY Approved as to style and content by; ( hairm...

  9. Theoretical full power correction factors as related to changes in ambient temperature, pressure and absolute humidity for aircraft turbine engines

    E-Print Network [OSTI]

    Raphael, Michel Antoun

    1969-01-01T23:59:59.000Z

    IN AMBIENT TEMPERATURE, PRESSURF. AND ABSOLUTE HUMIDITY FOR AIRCRAFT TURBINE ENGINES (August 1969) Michael Antoun Raphael B. S. (Mechanical Engineering) Texas A&M University Directed by: Professor Stanley H, Lowy ABSTRACT Power losses in aircraft gas... rated at standard atmospheric conditions (i. e, ambient temperature 69 F 3'Fend atmospheric pressure 29. 92 in. Hg. dry) . Obviously this same turbine will not be exposed to such standard conditions; therefore we have a change in power directly...

  10. Humidity-resistant ambient-temperature solid-electrolyte amperometric sensing apparatus

    DOE Patents [OSTI]

    Zaromb, S.

    1994-06-21T23:59:59.000Z

    Apparatus and methods for detecting selected chemical compounds in air or other gas streams at room or ambient temperature includes a liquid-free humidity-resistant amperometric sensor comprising a sensing electrode and a counter and reference electrode separated by a solid electrolyte. The sensing electrode preferably contains a noble metal, such as Pt black. The electrolyte is water-free, non-hygroscopic, and substantially water-insoluble, and has a room temperature ionic conductivity [>=]10[sup [minus]4] (ohm-cm)[sup [minus]1], and preferably [>=]0.01 (ohm-cm)[sup [minus]1]. The conductivity may be due predominantly to Ag[sup +] ions, as in Ag[sub 2]WO[sub 4], or to F[sup [minus

  11. Fracture and Fatigue Behavior at Ambient and Elevated Temperatures of Alumina Bonded with Copper/Niobium/Copper Interlayers

    E-Print Network [OSTI]

    Ritchie, Robert

    Fracture and Fatigue Behavior at Ambient and Elevated Temperatures of Alumina Bonded with Copper/Niobium-phase bonded using copper/niobium/copper interlayers have been investigated at both room and elevated, with failure primarily at the alumina/niobium interfaces. At room temperature, cyclic fatigue-crack propagation

  12. Structural and ambient/sub-ambient temperature magnetic properties of Er-substituted cobalt-ferrites synthesized by sol-gel assisted auto-combustion method

    SciTech Connect (OSTI)

    Prathapani, Sateesh [School of Engineering Sciences and Technology, University of Hyderabad, Hyderabad 500046 (India); Department of Metallurgical Engineering and Materials Science, IIT-Bombay, Mumbai 400076 (India); Jayaraman, Tanjore V., E-mail: ddas@uohyd.ernet.in, E-mail: tvjayaraman@gmail.com [Department of Mechanical and Materials Engineering, University of Nebraska, Lincoln, Nebraska 68588 (United States); Varaprasadarao, Eswara K. [Department of Metallurgical Engineering and Materials Science, IIT-Bombay, Mumbai 400076 (India); Das, Dibakar, E-mail: ddas@uohyd.ernet.in, E-mail: tvjayaraman@gmail.com [School of Engineering Sciences and Technology, University of Hyderabad, Hyderabad 500046 (India)

    2014-07-14T23:59:59.000Z

    Er-substituted cobalt-ferrites CoFe{sub 2?x}Er{sub x}O{sub 4} (0???x???0.04) were synthesized by sol-gel assisted auto-combustion method. The precursor powders were calcined at 673–873?K for 4?h, subsequently pressed into pellets and sintered at 1273?K for 4?h. X-ray diffraction (XRD) confirmed the presence of the spinel phase for all the compositions and, additional orthoferrite phase for higher compositions (x?=?0.03 and 0.04). The XRD spectra and the Transmission Electron Microscopy micrographs indicate that the nanocrystalline particulates of the Er-substituted cobalt ferrites have crystallite size of ?120–200?nm. The magnetization curves show an increase in saturation magnetization (M{sub S}) and coercivity (H{sub C}) for Er-substituted cobalt-ferrites at sub-ambient temperatures. M{sub S} for CoFe{sub 2}O{sub 4}, CoFe{sub 0.99}Er{sub 0.01}O{sub 4}, CoFe{sub 0.98}Er{sub 0.02}O{sub 4}, and CoFe{sub 0.97}Er{sub 0.03}O{sub 4} peak at 89.7?Am{sup 2}/kg, 89.3?Am{sup 2}/kg, 88.8?Am{sup 2}/kg, and 87.1?Am{sup 2}/kg, respectively, at a sub-ambient temperature of ?150?K. H{sub C} substantially increases with decrease in temperature for all the compositions, while it peaks at x?=?0.01?0.02 at all temperatures. The combination of Er content—x???0.02 and the temperature—?5?K provides the maximum H{sub C}???984?kA/m. Er-substituted cobalt-ferrites have higher cubic anisotropy constant, K{sub 1}, compared to pure cobalt-ferrite at ambient/sub-ambient temperatures. K{sub 1} gradually increases for all compositions in the temperature decreasing from 300 to 100?K. While K{sub 1} peaks at ?150?K for pure cobalt-ferrite, it peaks at ?50?K for CoFe{sub 0.99}Er{sub 0.01}O{sub 4}, CoFe{sub 0.98}Er{sub 0.02}O{sub 4}, and CoFe{sub 0.96}Er{sub 0.04}O{sub 4}. The M{sub S} (?88.7?Am{sup 2}/kg), at 5?K, for Er substituted cobalt-ferrite is close to the highest values reported for Sm and Gd substituted cobalt-ferrites. The M{sub S} (?83.5?Am{sup 2}/kg) at 300?K for Er-substituted cobalt-ferrite is the highest among the lanthanide series element substituted cobalt-ferrites. The H{sub C} (at 5?K) for Er substituted cobalt-ferrite is close to the highest values observed for La, Ce, Nd, Sm, and Gd substituted cobalt-ferrites.

  13. Influence of ambient gas on the temperature and density of laser produced carbon plasma

    E-Print Network [OSTI]

    Harilal, S. S.

    ; accepted for publication 11 November 1997 The effect of ambient gas on the dynamics of the plasma generated In moderate or high pressures, a blast wave model is found to describe accurately the plume propagation the maximum plume length with considerable accuracy.7,13 In this letter we report the effect of ambient

  14. Splashing phenomena of room temperature liquid metal droplet striking on the pool of the same liquid under ambient air environment

    E-Print Network [OSTI]

    Haiyan Li; Shengfu Mei; Lei Wang; Yunxia Gao; Jing Liu

    2013-09-04T23:59:59.000Z

    In this article, the fluid dynamics of room temperature liquid metal (RTLM) droplet impacting onto a pool of the same liquid in ambient air was investigated. A series of experiments were conducted in order to disclose the influence of the oxidation effect on the impact dynamics. The droplet shape and impact phenomenology were recorded with the aid of a high-speed digital camera. The impact energy stored in the splash structures was estimated via a theoretical model and several morphological parameters obtained from instantaneous images of the splash. It was observed that the droplet shape and the splashing morphology of RTLM were drastically different from those of water, so was the impact dynamics between room temperature LM pool and high temperature LM pool. The energy analysis disclosed that the height of the jet is highly sensitive to the viscosity of the fluid, which is subjected to the oxidation effect and temperature effect simultaneously, and thus perfectly explained the phenomena. These basic findings are important for the application of RTLM in a series of newly emerging technologies such as liquid metal based spray cooling, ink-jet printed electronics, interface material painting and coating, metallurgy, and 3D packages, etc.

  15. A Comparison of the Performance of Different PV Module Types in High Ambient Temperatures.

    E-Print Network [OSTI]

    Centre for Renewable Energy Murdoch University, Perth, WA, Australia E-mail: acarr and summer in the temperate climate of Perth, Western Australia. The Perth summer averages over 7 peak sun operation during spring and summer in Perth, Western Australia, at reasonably elevated module temperatures

  16. A high-temperature, ambient-pressure ultra-dry operando reactor cell for Fourier-transform infrared spectroscopy

    SciTech Connect (OSTI)

    Köck, Eva-Maria; Kogler, Michaela; Pramsoler, Reinhold; Klötzer, Bernhard; Penner, Simon, E-mail: simon.penner@uibk.ac.at [Institute of Physical Chemistry, University of Innsbruck, Innrain 80-82, A-6020 Innsbruck (Austria)

    2014-08-15T23:59:59.000Z

    The construction of a newly designed high-temperature, high-pressure FT-IR reaction cell for ultra-dry in situ and operando operation is reported. The reaction cell itself as well as the sample holder is fully made of quartz glass, with no hot metal or ceramic parts in the vicinity of the high-temperature zone. Special emphasis was put on chemically absolute water-free and inert experimental conditions, which includes reaction cell and gas-feeding lines. Operation and spectroscopy up to 1273 K is possible, as well as pressures up to ambient conditions. The reaction cell exhibits a very easy and variable construction and can be adjusted to any available FT-IR spectrometer. Its particular strength lies in its possibility to access and study samples under very demanding experimental conditions. This includes studies at very high temperatures, e.g., for solid-oxide fuel cell research or studies where the water content of the reaction mixtures must be exactly adjusted. The latter includes all adsorption studies on oxide surfaces, where the hydroxylation degree is of paramount importance. The capability of the reaction cell will be demonstrated for two selected examples where information and in due course a correlation to other methods can only be achieved using the presented setup.

  17. Ambient-temperature superconductor symetrical metal-dihalide bis-(ethylenedithio)-tetrathiafulvalene compounds

    DOE Patents [OSTI]

    Williams, Jack M. (Downers Grove, IL); Wang, Hsien-Hau (Willowbrook, IL); Beno, Mark A. (Woodridge, IL)

    1987-01-01T23:59:59.000Z

    A new class of organic superconductors having the formula (ET).sub.2 MX.sub.2 wherein ET represents bis(ethylenedithio)-tetrathiafulvalene, M is a metal such as Au, Ag, In, Tl, Rb, Pd and the like and X is a halide. The superconductor (ET).sub.2 AuI.sub.2 exhibits a transition temperature of 5 K. which is high for organic superconductors.

  18. Variability of Battery Wear in Light Duty Plug-In Electric Vehicles Subject to Ambient Temperature, Battery Size, and Consumer Usage: Preprint

    SciTech Connect (OSTI)

    Wood, E.; Neubauer, J.; Brooker, A. D.; Gonder, J.; Smith, K. A.

    2012-08-01T23:59:59.000Z

    Battery wear in plug-in electric vehicles (PEVs) is a complex function of ambient temperature, battery size, and disparate usage. Simulations capturing varying ambient temperature profiles, battery sizes, and driving patterns are of great value to battery and vehicle manufacturers. A predictive battery wear model developed by the National Renewable Energy Laboratory captures the effects of multiple cycling and storage conditions in a representative lithium chemistry. The sensitivity of battery wear rates to ambient conditions, maximum allowable depth-of-discharge, and vehicle miles travelled is explored for two midsize vehicles: a battery electric vehicle (BEV) with a nominal range of 75 mi (121 km) and a plug-in hybrid electric vehicle (PHEV) with a nominal charge-depleting range of 40 mi (64 km). Driving distance distributions represent the variability of vehicle use, both vehicle-to-vehicle and day-to-day. Battery wear over an 8-year period was dominated by ambient conditions for the BEV with capacity fade ranging from 19% to 32% while the PHEV was most sensitive to maximum allowable depth-of-discharge with capacity fade ranging from 16% to 24%. The BEV and PHEV were comparable in terms of petroleum displacement potential after 8 years of service, due to the BEV?s limited utility for accomplishing long trips.

  19. University degli Studi di Catania UNIVERSITA DEGLI STUD! DI

    E-Print Network [OSTI]

    Bella, Giampaolo

    University degli Studi di Catania Prof. Re . De: UNIVERSITA DEGLI STUD! DI CATANIA Pretreat favorevole espresso in data 13.05.2014 dal Senato accademico, ha approvato, tra le altre, la suddetta

  20. Controlled ambient and temperature treatment of InGaZnO thin film transistors for improved bias-illumination stress reliability

    SciTech Connect (OSTI)

    Vemuri, Rajitha N. P., E-mail: rvemuri@asu.edu [School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe 85287 (United States); Hasin, Muhammad R. [School of Electrical, Computer and Energy Engineering, Arizona State University, Tempe 85287 (United States); Alford, T. L., E-mail: TA@asu.edu [School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe 85287 and School of Electrical, Computer and Energy Engineering, Arizona State University, Tempe 85287 (United States)

    2014-03-15T23:59:59.000Z

    The failure mechanisms arising from the instability in operation of indium gallium zinc oxide based thin film transistors (TFTs) upon prolonged real application stresses (bias and illumination) have been extensively studied and reported. Positive and negative gate bias conditions, along with high photonic energy wavelengths within visible light spectrum are used as stress conditions. The increased carrier concentration due to photonic excitation of defects within bandgap and ionization of deep level vacancies is compensated by the reduction in off currents under illumination due to the trapping of carriers in the intermetal dielectric. Band lowering at the source-channel junction due to accumulation of negative carriers repelled due to negative gate bias stress further causes high carrier flow into the channel and drives the devices into failure. The defect identification during failure and degradation assisted in proposing suitable low temperature post processing in specific ambients. Reliability tests after specific anneals in oxygen, vacuum, and forming gas ambients confirm the correlation of the defect type with anneal ambient. Annealed TFTs demonstrate high stabilities under illumination stresses and do not fail when subjected to combined stresses that cause failure in as-fabricated TFTs. Oxygen and forming gas anneals are impactful on the reliability and opens an area of study on donor and vacancy behavior in amorphous mixed oxide based TFTs. The subthreshold swing, field-effect mobilities, and off currents provide knowledge on best anneal practices by understanding role of hydrogen and oxygen in vacancy annihilation and transistor switching properties.

  1. The effect of hardware configuration on the performance of residential air conditioning systems at high outdoor ambient temperatures

    E-Print Network [OSTI]

    Bain, Joel Alan

    1995-01-01T23:59:59.000Z

    A study was performed which investigated the effect of hardware configuration on air conditioning cooling system performance at high outdoor temperatures. The initial phase of the investigation involved the testing of ten residential air...

  2. CONTAINMENT VESSEL TEMPERATURE FOR PU-238 HEAT SOURCE CONTAINER UNDER AMBIENT, FREE CONVECTION AND LOW EMISSIVITY COOLING CONDITIONS

    SciTech Connect (OSTI)

    Gupta, N.; Smith, A.

    2011-02-14T23:59:59.000Z

    The EP-61 primary containment vessel of the 5320 shipping package has been used for storage and transportation of Pu-238 plutonium oxide heat source material. For storage, the material in its convenience canister called EP-60 is placed in the EP-61 and sealed by two threaded caps with elastomer O-ring seals. When the package is shipped, the outer cap is seal welded to the body. While stored, the EP-61s are placed in a cooling water bath. In preparation for welding, several containers are removed from storage and staged to the welding booth. The significant heat generation of the contents, and resulting rapid rise in component temperature necessitates special handling practices. The test described here was performed to determine the temperature rise with time and peak temperature attained for an EP-61 with 203 watts of internal heat generation, upon its removal from the cooling water bath.

  3. Vapor-liquid equilibrium of water-acetone-air at ambient temperatures and pressures. An analysis of different VLE-fitting methods

    SciTech Connect (OSTI)

    Lichtenbelt, J.H.; Schram, B.J.

    1985-04-01T23:59:59.000Z

    The availability of accurate equilibrium data is of high importance in chemical engineering practice both for design and research purposes. It appeared that for the gas absorption system water-acetone-air in the range of special interest for absorption and desorption operations, neither literature data nor calculations following UNIFAC gave a sufficient accuracy. An experimental program was set up to determine equilibrium data with an accuracy within 2% for low acetone concentrations (up to 7 wt % gas phase) at ambient temperature (16-30/sup 0/C) and atmospheric pressure (740-860 mmHg). From experiments the activity coefficient at infinite dilution of acetone ..gamma.. is found to be 6.79 (0.01) at 20/sup 0/C and 7.28 (0.01) at 25/sup 0/C, while the total error in ..gamma.. is 1.5%. The equilibrium constant can be calculated from ..gamma.. and shows the same error. The experimental data-fitting with procedures of Margules (two parameters) and Van Laar were successful, but NRTL, Wilson, and UNIQUAC failed, probably because of the small concentration range used.

  4. RIKNOWEICIUA IVERSITA DEGLI STUDI DI

    E-Print Network [OSTI]

    Bella, Giampaolo

    EUROPEA UNIVERSITA' degli ATM di CATANIA Italia Matta ITALIA-MALTA : UN MARE DI OPPORTUNITA' PER IL FUTURO Italia-Malta 2007-2013 the contribuiscano efficacemente al raggiungimento dell'obiettivo generate del P.O. Italia-Malta 2007-2013: "Rafforzare 1 'attrattiviti, e la competitivith dell'area transfrontaliera net

  5. E-Print Network 3.0 - ambient sound measurements Sample Search...

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

    Summary of CHI '98, April 18-23, 1998, 1998 ACM 1 ambientROOM: Integrating Ambient Media Summary: of the weather outside from ambient cues such as light, temperature, sound,...

  6. Simplified 2DEG carrier concentration model for composite barrier AlGaN/GaN HEMT

    SciTech Connect (OSTI)

    Das, Palash, E-mail: d.palash@gmail.com; Biswas, Dhrubes, E-mail: d.palash@gmail.com [Indian Institute of Technology Kharagpur, Kharagpur - 721302, West Bengal (India)

    2014-04-24T23:59:59.000Z

    The self consistent solution of Schrodinger and Poisson equations is used along with the total charge depletion model and applied with a novel approach of composite AlGaN barrier based HEMT heterostructure. The solution leaded to a completely new analytical model for Fermi energy level vs. 2DEG carrier concentration. This was eventually used to demonstrate a new analytical model for the temperature dependent 2DEG carrier concentration in AlGaN/GaN HEMT.

  7. 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

  8. Architettura degli elaboratori -1 -A. Sperduti Architettura degli elaboratori -1 Pagina 205

    E-Print Network [OSTI]

    Sperduti, Alessandro

    , inizialmente vuota, ed associazione diretta (con politica di scrittura write-back). Architettura degli 16B, con dimensione di blocco 4B, inizialmente vuota, ed associazione 2-way (con politica di rimpiazzo LRU e politica di scrittura write-through). Architettura degli elaboratori -1 Pagina 208 Si assuma

  9. PRESERVATION OF H2 PRODUCTION ACTIVITY IN NANOPOROUS LATEX COATINGS OF RHODOPSEUDOMONAS PALUSTRIS CGA009 DURING DRY STORAGE AT AMBIENT TEMPERATURES

    SciTech Connect (OSTI)

    Milliken, C.; Piskorska, M.; Soule, T.; Gosse, J.; Flickinger, M.; Smith, G.; Yeager, C.

    2012-08-27T23:59:59.000Z

    To assess the applicability of latex cell coatings as an "off-the-shelf' biocatalyst, the effect of osmoprotectants, temperature, humidity and O{sub 2} on preservation of H{sub 2} production in Rhodopseudomonas palustris coatings was evaluated. Immediately following latex coating coalescence (24 h) and for up to 2 weeks of dry storage, rehydrated coatings containing different osmoprotectants displayed similar rates of H{sub 2} production. Beyond 2 weeks of storage, sorbitol- treated coatings lost all H{sub 2} production activity, whereas considerable H{sub 2} production was still detected in sucrose- and trehalose-stabilized coatings. The relative humidity level at which the coatings were stored had a significant impact on the recovery and subsequent rates of H{sub 2} production. After 4 weeks storage under air at 60% humidity, coatings produced only trace amounts of H{sub 2} (0-0.1% headspace accumulation), whereas those stored at <5% humidity retained 27-53% of their H{sub 2} production activity after 8 weeks of storage. When stored in argon at <5% humidity and room temperature, R. palustris coatings retained full H{sub 2} production activity for 3 months, implicating oxidative damage as a key factor limiting coating storage. Overall, the results demonstrate that biocatalytic latex coatings are an attractive cell immobilization platform for preservation of bioactivity in the dry state.

  10. UNIVERSIT ` A DEGLI STUDI DI TRIESTE

    E-Print Network [OSTI]

    Mizzaro, Stefano

    UNIVERSIT ` A DEGLI STUDI DI TRIESTE DOTTORATO DI RICERCA IN INGEGNERIA DELL'INFORMAZIONE IX Ciclo Relatore: prof. Longo Giuseppe DEEI, Universit`a di Trieste Correlatore: prof. Tasso Carlo Dipartimento di Matematica e Informatica Universit`a di Udine Coordinatore: prof. Todero Franco DEEI, Universit`a di Trieste

  11. 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...

  12. UNIVERSITA' DEGLI STUDI DI ROMA "LA SAPIENZA" DIPARTIMENTO INGEGNERIA CHIMICA MATERIALI AMBIENTE

    E-Print Network [OSTI]

    Guidoni, Leonardo

    " (PRODUZIONE DI MISCELE METANO-IDROGENO CON CICLI TERMOCHIMICA ALIMENTATI DA ENERGIA SOLARE E SISTEMI DI

  13. Effects of ambient humidity on the energy use of air conditioning equipment

    E-Print Network [OSTI]

    White, Justin George

    2010-01-01T23:59:59.000Z

    temperatures for high ambient wet bulb period of 6AM Sep 01,10 Figure 3.1: Comparison of dry bulb and relative humiditytemperatures for low ambient wet bulb period of 6AM Jan 06,

  14. Inhalation toxicology. 11. The effect of elevated temperature on carbon monoxide toxicity

    SciTech Connect (OSTI)

    Sanders, D.C.; Endecott, B.R.

    1990-12-01T23:59:59.000Z

    Laboratory rats were exposed (a) to experimental concentrations of carbon monoxide in air at ambient temperature, (b) to elevated temperature atmospheres from 40 deg C to 60 deg C, and (c) to selected carbon monoxide (CO) concentrations at the elevated temperatures in (b). The incapacitating potency of each of the environments was evaluated by measurements of time-to-incapacitation (t sub i) as a function of CO concentration and/or temperature; incapacitation was defined operationally as loss of ability to walk inside a motor-driven, rotating cage enclosed in an exposure chamber. Comparison of data from the combined (CO + elevated temperature) exposures and exposures to CO and elevated temperatures alone indicated than incapacitation occurred earlier when CO inhalation was combined with a whole-body, elevated temperature environment than was observed for the same exposure parameters applied individually. No evidence for a synergistic effect was noted. An empirical equation was derived that allows the calculation of a predicted t sub i for combinations of CO and temperature within the rangers utilized in the experimental exposures.

  15. Allostery Is an Intrinsic Property of the Protease Domain of DegS Implications for Enzyme Function and Evolution

    SciTech Connect (OSTI)

    Sohn, Jungsan; Grant, Robert A.; Sauer, Robert T. (MIT)

    2010-12-02T23:59:59.000Z

    DegS is a periplasmic Escherichia coli protease, which functions as a trimer to catalyze the initial rate-limiting step in a proteolytic cascade that ultimately activates transcription of stress response genes in the cytoplasm. Each DegS subunit consists of a protease domain and a PDZ domain. During protein folding stress, DegS is allosterically activated by peptides exposed in misfolded outer membrane porins, which bind to the PDZ domain and stabilize the active protease. It is not known whether allostery is conferred by the PDZ domains or is an intrinsic feature of the trimeric protease domain. Here, we demonstrate that free DegS{sup {Delta}PDZ} equilibrates between active and inactive trimers with the latter species predominating. Substrate binding stabilizes active DegS{sup {Delta}PDZ} in a positively cooperative fashion. Mutations can also stabilize active DegS{sup {Delta}PDZ} and produce an enzyme that displays hyperbolic kinetics and degrades substrate with a maximal velocity within error of that for fully activated, intact DegS. Crystal structures of multiple DegS{sup {Delta}PDZ} variants, in functional and non-functional conformations, support a two-state model in which allosteric switching is mediated by changes in specific elements of tertiary structure in the context of an invariant trimeric base. Overall, our results indicate that protein substrates must bind sufficiently tightly and specifically to the functional conformation of DegS{sup {Delta}PDZ} to assist their own degradation. Thus, substrate binding alone may have regulated the activities of ancestral DegS trimers with subsequent fusion of the protease domain to a PDZ domain, resulting in ligand-mediated regulation.

  16. NIF Ambient Vibration Measurements

    SciTech Connect (OSTI)

    Noble, C.R.; Hoehler, M.S., S.C. Sommer

    1999-11-29T23:59:59.000Z

    LLNL has an ongoing research and development project that includes developing data acquisition systems with remote wireless communication for monitoring the vibrations of large civil engineering structures. In order to establish the capability of performing remote sensing over an extended period of time, the researchers needed to apply this technology to a real structure. The construction of the National Ignition Facility provided an opportunity to test the data acquisition system on a large structure to monitor whether the facility is remaining within the strict ambient vibration guidelines. This document will briefly discuss the NIF ambient vibration requirements and summarize the vibration measurements performed during the Spring and Summer of 1999. In addition, a brief description of the sensors and the data acquisition systems will be provided in Appendix B.

  17. Universit degli Studi di Genova SERVIZIO SUPPORTO ALLA RICERCA

    E-Print Network [OSTI]

    Genova, Università degli Studi di

    progetti sono effettuate esclusivamente al termine degli stessi. Il costo delle valutazioni scientifiche ex la finanza pubblica." MODALITA' DI RENDICONTAZIONE E VERIFICA DISPOSIZIONI NORMATIVE FONDO

  18. Universit degli Studi di Bari Decreto Rettorale n. 3519

    E-Print Network [OSTI]

    Malerba, Donato

    Finanza e la Contabilità; Vista la Convenzione di collaborazione per attività di formazione stipulata costo delle prestazioni. Analisi del fenomeno della povertà e degli effetti distributivi della crisi

  19. UNIVERSIT DEGLI STUDI DELLA TUSCIA Didactic and Research Unit

    E-Print Network [OSTI]

    Herrmann, Samuel

    UNIVERSITÃ? DEGLI STUDI DELLA TUSCIA Division I Didactic and Research Unit Mobility STUDENTS DIDACTIC AND RESEARCH UNIT Office address: Mobility and International Cooperation Office Via S

  20. Enhanced stability against bias-stress of metal-oxide thin film transistors deposited at elevated temperatures

    SciTech Connect (OSTI)

    Fakhri, M.; Goerrn, P.; Riedl, T. [Institute of Electronic Devices, University of Wuppertal, Rainer-Gruenter-St. 21, 42119 Wuppertal (Germany); Weimann, T.; Hinze, P. [Physikalisch-Technische Bundesanstalt Braunschweig, Bundesallee 100, 38116 Braunschweig (Germany)

    2011-09-19T23:59:59.000Z

    Transparent zinc-tin-oxide (ZTO) thin film transistors (TFTs) have been prepared by DC magnetron sputtering. Compared to reference devices with a channel deposited at room temperature and subsequently annealing at 400 deg. C, a substantially enhanced stability against bias stress is evidenced for devices with in-situ substrate heating during deposition (400 deg. C). A reduced density of sub-gap defect states in TFT channels prepared with in-situ substrate heating is found. Concomitantly, a reduced sensitivity to the adsorption of ambient gases is evidenced for the in-situ heated devices. This finding is of particular importance for an application as driver electronics for organic light emitting diode displays.

  1. Low temperature sodium-beta battery

    DOE Patents [OSTI]

    Farmer, Joseph C

    2013-11-19T23:59:59.000Z

    A battery that will operate at ambient temperature or lower includes an enclosure, a current collector within the enclosure, an anode that will operate at ambient temperature or lower within the enclosure, a cathode that will operate at ambient temperature or lower within the enclosure, and a separator and electrolyte within the enclosure between the anode and the cathode. The anode is a sodium eutectic anode that will operate at ambient temperature or lower and is made of a material that is in a liquid state at ambient temperature or lower. The cathode is a low melting ion liquid cathode that will operate at ambient temperature or lower and is made of a material that is in a liquid state at ambient temperature or lower.

  2. National Ambient Radiation Database

    SciTech Connect (OSTI)

    Dziuban, J.; Sears, R.

    2003-02-25T23:59:59.000Z

    The U.S. Environmental Protection Agency (EPA) recently developed a searchable database and website for the Environmental Radiation Ambient Monitoring System (ERAMS) data. This site contains nationwide radiation monitoring data for air particulates, precipitation, drinking water, surface water and pasteurized milk. This site provides location-specific as well as national information on environmental radioactivity across several media. It provides high quality data for assessing public exposure and environmental impacts resulting from nuclear emergencies and provides baseline data during routine conditions. The database and website are accessible at www.epa.gov/enviro/. This site contains (1) a query for the general public which is easy to use--limits the amount of information provided, but includes the ability to graph the data with risk benchmarks and (2) a query for a more technical user which allows access to all of the data in the database, (3) background information on ER AMS.

  3. Universit degli Studi di Bari Decreto Rettorale n. 573

    E-Print Network [OSTI]

    Malerba, Donato

    Dipartimento di Geologia e Geofisica adottata nella riunione del 18/11/2009; Vista la delibera del Senato Dipartimento di Geologia e Geofisica dell'Università degli Studi di Bari. L'importo complessivo lordo di detta

  4. Course: FUSION SCIENCE AND ENGINEERING Universit degli Studi di Padova

    E-Print Network [OSTI]

    Cesare, Bernardo

    the subject of controlled thermonuclear fusion in magnetically confined plasmas. Both fusion science of Controlled Thermonuclear Fusion, b) Engineering of a Magnetically Confined Fusion Reactor, c) ExperimentalCourse: FUSION SCIENCE AND ENGINEERING Università degli Studi di Padova in agreement

  5. Universit degli Studi di Roma "La Sapienza" Facolt di Economia

    E-Print Network [OSTI]

    Guidoni, Leonardo

    Università degli Studi di Roma "La Sapienza" Facoltà di Economia Dipartimento di Economia e Diritto Economia e Diritto in data 21/10/2014 All'art. 6 ultimo comma in luogo di: di essere in regola con i

  6. Temperature dependence of the indentation size effect

    E-Print Network [OSTI]

    Franke, Oliver

    The influence of temperature on the indentation size effect is explored experimentally. Copper is indented on a custom-built high-temperature nanoindenter at temperatures between ambient and 200 °C, in an inert atmosphere ...

  7. Effect of annealing temperature on the pitting corrosion resistance of super duplex stainless steel UNS S32750

    SciTech Connect (OSTI)

    Tan Hua; Jiang Yiming; Deng Bo; Sun Tao; Xu Juliang [Department of Material Science, Fudan University, Shanghai 200433 (China); Li Jin, E-mail: jinli@fudan.edu.cn [Department of Material Science, Fudan University, Shanghai 200433 (China)

    2009-09-15T23:59:59.000Z

    The pitting corrosion resistance of commercial super duplex stainless steels SAF2507 (UNS S32750) annealed at seven different temperatures ranging from 1030 deg. C to 1200 deg. C for 2 h has been investigated by means of potentiostatic critical pitting temperature. The microstructural evolution and pit morphologies of the specimens were studied through optical/scanning electron microscope. Increasing annealing temperature from 1030 deg. C to 1080 deg. C elevates the critical pitting temperature, whereas continuing to increase the annealing temperature to 1200 deg. C decreases the critical pitting temperature. The specimens annealed at 1080 deg. C for 2 h exhibit the best pitting corrosion resistance with the highest critical pitting temperature. The pit morphologies show that the pit initiation sites transfer from austenite phase to ferrite phase as the annealing temperature increases. The aforementioned results can be explained by the variation of pitting resistance equivalent number of ferrite and austenite phase as the annealing temperature changes.

  8. UNIVERSIT DEGLI STUDI DI TORINO REGOLAMENTO DI ATENEO PER

    E-Print Network [OSTI]

    Sproston, Jeremy

    UNIVERSITÀ DEGLI STUDI DI TORINO REGOLAMENTO DI ATENEO PER L'AMMINISTRAZIONE, LA FINANZA E LA controllo di gestione è organizzato per centri di responsabilità e di costo e ha per oggetto il controllo di programma o progetto; c. la definizione di idonei indicatori di risultati, di qualità ed efficacia, di costo

  9. UNIVERSITA' DEGLI STUDI DI ROMA "LA SAPIENZA" FACOLTA' DI ECONOMIA

    E-Print Network [OSTI]

    Guidoni, Leonardo

    UNIVERSITA' DEGLI STUDI DI ROMA "LA SAPIENZA" FACOLTA' DI ECONOMIA DIPARTIMENTO DI ECONOMIA E 16/12/2009 che ha conferito n. 3 assegni di ricerca al Dipartimento di Economia Pubblica; VISTA la Settore scientifico disciplinare SECS P02 (sede di Roma) ­ presso il Dipartimento di Economia e Diritto

  10. UNIVERSITA' DEGLI STUDI DI ROMA "LA SAPIENZA" FACOLTA' DI ECONOMIA

    E-Print Network [OSTI]

    Di Pillo, Gianni

    UNIVERSITA' DEGLI STUDI DI ROMA "LA SAPIENZA" FACOLTA' DI ECONOMIA Via del Castro Laurenziano, 9 ­ Roma SETTIMANA DELL'ACCOGLIENZA ­ dal 14 al 16 Settembre 2011 La Facoltà di Economia presenterà.30 visita alle strutture di Facoltà Ore 18.00 : presso un'aula della Facoltà di Economia il responsabile del

  11. UNIVERSITA DEGLI STUDI DI TRIESTE DOTTORATO DI RICERCA IN

    E-Print Network [OSTI]

    Mizzaro, Stefano

    UNIVERSITA DEGLI STUDI DI TRIESTE DOTTORATO DI RICERCA IN INGEGNERIA DELL'INFORMAZIONE IX Ciclo Il. Longo Giuseppe DEEI, Universita di Trieste Correlatore: prof. Tasso Carlo Dipartimento di Matematica e Informatica Universita di Udine Coordinatore: prof. Todero Franco DEEI, Universita di Trieste Febbraio 1997

  12. A study of temperature compensating circuits for voltage references which use negative temperature coefficient zener diodes

    E-Print Network [OSTI]

    Coleman, Spencer Delano

    1961-01-01T23:59:59.000Z

    Character- istics in Breakdown Region . 13 3f. 1N 751 Zener Diode Voltage vs Current Character- istics in Breakdown Region . 14 3g, lN752 Zener Diode Voltage vs Current Character- istics in Breakdown Region 15 4a. 1N746 Zener Diode Ambient Temperature... vs Voltage Characteristics in Breakdown Region. . . . . . . . . . 16 4b. IN747 Zener Diode Ambient Temperature vs Voltage Characteristics in Breakdown Region. . . . . . . . . . 17 4c. 1N748 Zener Diode Ambient Temperature vs Voltage...

  13. Temperature compensated photovoltaic array

    DOE Patents [OSTI]

    Mosher, D.M.

    1997-11-18T23:59:59.000Z

    A temperature compensated photovoltaic module comprises a series of solar cells having a thermally activated switch connected in parallel with several of the cells. The photovoltaic module is adapted to charge conventional batteries having a temperature coefficient differing from the temperature coefficient of the module. The calibration temperatures of the switches are chosen whereby the colder the ambient temperature for the module, the more switches that are on and form a closed circuit to short the associated solar cells. By shorting some of the solar cells as the ambient temperature decreases, the battery being charged by the module is not excessively overcharged at lower temperatures. PV module is an integrated solution that is reliable and inexpensive. 2 figs.

  14. Temperature compensated photovoltaic array

    DOE Patents [OSTI]

    Mosher, Dan Michael (Plano, TX)

    1997-11-18T23:59:59.000Z

    A temperature compensated photovoltaic module (20) comprised of a series of solar cells (22) having a thermally activated switch (24) connected in parallel with several of the cells (22). The photovoltaic module (20) is adapted to charge conventional batteries having a temperature coefficient (TC) differing from the temperature coefficient (TC) of the module (20). The calibration temperatures of the switches (24) are chosen whereby the colder the ambient temperature for the module (20), the more switches that are on and form a closed circuit to short the associated solar cells (22). By shorting some of the solar cells (22) as the ambient temperature decreases, the battery being charged by the module (20) is not excessively overcharged at lower temperatures. PV module (20) is an integrated solution that is reliable and inexpensive.

  15. 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

  16. Lead reduction in ambient air

    SciTech Connect (OSTI)

    Smith, R.D.; Kiehn, O.A.; Wilburn, D.R.; Bowyer, R.C.

    1987-01-01T23:59:59.000Z

    The Bureau of Mines evaluated the emission control methods, including the capital investments and operating cost, necessary for further reducing lead levels in ambient air at the Glover, Herculaneum, and Buick smelter-refineries in Missouri and the East Helena, MT, smelter. This report presents theoretically achievable lead emission reductions and estimated capital and operating costs.

  17. Ambient Air Quality Criteria (Manitoba, Canada)

    Broader source: Energy.gov [DOE]

    The Manitoba Ambient Air Quality Criteria schedule lists maximum time-based pollutant concentration levels for the protection and preservation of ambient air quality within the Province of Manitoba...

  18. Ambient pressure fuel cell system

    DOE Patents [OSTI]

    Wilson, Mahlon S. (Los Alamos, NM)

    2000-01-01T23:59:59.000Z

    An ambient pressure fuel cell system is provided with a fuel cell stack formed from a plurality of fuel cells having membrane/electrode assemblies (MEAs) that are hydrated with liquid water and bipolar plates with anode and cathode sides for distributing hydrogen fuel gas and water to a first side of each one of the MEAs and air with reactant oxygen gas to a second side of each one of the MEAs. A pump supplies liquid water to the fuel cells. A recirculating system may be used to return unused hydrogen fuel gas to the stack. A near-ambient pressure blower blows air through the fuel cell stack in excess of reaction stoichiometric amounts to react with the hydrogen fuel gas.

  19. UNIVERSIT`A DEGLI STUDI DI TRIESTE Sede Amministrativa del Dottorato di Ricerca

    E-Print Network [OSTI]

    Fernandez, Thomas

    UNIVERSIT`A DEGLI STUDI DI TRIESTE Sede Amministrativa del Dottorato di Ricerca XXV Ciclo - Scuola RICERCA Enrico Sorio Chiar.mo Prof. Walter Ukovich Universit`a degli Studi di Trieste RELATORE Chiar.mo Prof. Alberto Bartoli Universit`a degli Studi di Trieste CORRELATORE Chiar.mo Prof. Eric Medvet

  20. Quantitative room-temperature mineralization of airborne formaldehyde using manganese oxide catalysts

    E-Print Network [OSTI]

    Sidheswaran, Meera A.

    2012-01-01T23:59:59.000Z

    in VOC abatement. Applied Catalysis B-Environmental. 61:calcination temperature. Applied Catalysis B- Environmental.ambient temperature. Applied Catalysis B-Environmental. 81:

  1. Ambient Corp | Open Energy Information

    Open Energy Info (EERE)

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

  2. air ambient temperature: Topics by E-print Network

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

    It not only impacts the thermal comfort of occupants, but also also greatly affects the energy consumption in air conditioning systems. The lower the indoor... Yao, Y.; Lian, Z.;...

  3. ambient air temperature: Topics by E-print Network

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

    It not only impacts the thermal comfort of occupants, but also also greatly affects the energy consumption in air conditioning systems. The lower the indoor... Yao, Y.; Lian, Z.;...

  4. Photoelectron Spectroscopy under Ambient Pressure and Temperature Conditions

    E-Print Network [OSTI]

    Ogletree, D. Frank

    2009-01-01T23:59:59.000Z

    Rev. 99 , 77 (1999). Peltier source & model FTS systemsgas environments. Peltier sample holder We constructed abased on a thermoelectric Peltier cooler for experiments in

  5. Simultaneous measurements of driveability and emissions at cool ambient temperatures

    SciTech Connect (OSTI)

    Jorgensen, S.W.; Benson, J.D.

    1994-10-01T23:59:59.000Z

    Simultaneous measurements of cold-start/warm-up driveability and tailpipe emissions on a chassis dynamometer were made at 5{degree}C using four late-model vehicles. Two fuels were used: a low driveability index (DI) fuel containing 11% MTBE and 29% aromatics, and a high DI fuel with no MTBE and 43% aromatics. Tailpipe hydrocarbon emissions and total weighted driveability demerits (TWDs) both correlated with the fuel used; both increased significantly when high-DI/no-MTBE fuel was used. A strong linear relation exists between TWDs and simultaneously measured tailpipe hydrocarbon emissions. CO and NOx emissions did not correlate with fuel composition. 10 refs., 10 figs., 4 tabs.

  6. Improving Boiler Efficiency Modeling Based on Ambient Air Temperature

    E-Print Network [OSTI]

    Zhou, J.; Deng, S.; Claridge, D. E.; Haberl, J. S.; Turner, W. D.

    Optimum economic operation in a large power plant can cut operating costs substantially. Individual plant equipment should be operated under conditions that are most favorable for maximizing its efficiency. It is widely accepted that boiler load...

  7. Improving Boiler Efficiency Modeling Based On Ambient Air Temperature

    E-Print Network [OSTI]

    Zhou, J.; Deng, S.; Turner, W. D.; Claridge, D. E.; Haberl, J. S.

    2002-01-01T23:59:59.000Z

    Optimum economic operation in a large power plant can cut operating costs substantially. Individual plant equipment should be operated under conditions that are most favorable for maximizing its efficiency. It is widely accepted that boiler load...

  8. ambient temperature passive: Topics by E-print Network

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

    energy and nitrogen balance. The amounts of alfalfa eaten and the levels of nitrogen. Daylight ratio effect is evident in one case : long daily daylight increases the proportion of...

  9. Process for light-driven hydrocarbon oxidation at ambient temperatures

    DOE Patents [OSTI]

    Shelnutt, John A. (Tijeras, NM)

    1990-01-01T23:59:59.000Z

    A photochemical reaction for the oxidation of hydrocarbons uses molecular oxygen as the oxidant. A reductive photoredox cycle that uses a tin(IV)- or antimony(V)-porphyrin photosensitizer generates the reducing equivalents required to activate oxygen. This artificial photosynthesis system drives a catalytic cycle, which mimics the cytochrome P.sub.450 reaction, to oxidize hydrocarbons. An iron(III)- or manganese(III)-porphyrin is used as the hydrocarbon-oxidation catalyst. Methylviologen can be used as a redox relay molecule to provide for electron-transfer from the reduced photosensitizer to the Fe or Mn porphyrin. The system is long-lived and may be used in photo-initiated spectroscopic studies of the reaction to determine reaction rates and intermediates.

  10. Nanomechanical studies of metallic glasses at ambient and elevated temperatures

    E-Print Network [OSTI]

    Packard, Corinne E

    2009-01-01T23:59:59.000Z

    Bulk metallic glasses, though attractive for use in structural applications for their high strength and elastic limit, display several unacceptable features upon deformation, including quasi-brittle failure along shear ...

  11. Photoelectron Spectroscopy under Ambient Pressure and Temperature Conditions

    E-Print Network [OSTI]

    Ogletree, D. Frank

    2009-01-01T23:59:59.000Z

    sources (ALS in Berkeley and BESSY in Berlin), with specialat the ISISS beamline at BESSY in Berlin 37 , and atat the ALS 66 and BESSY 67 synchrotron facilities. The first

  12. Photoelectron Spectroscopy under Ambient Pressure and Temperature Conditions

    E-Print Network [OSTI]

    Ogletree, D. Frank

    2009-01-01T23:59:59.000Z

    at the ALS 66 and BESSY 67 synchrotron facilities. The firstat synchrotron light sources (ALS in Berkeley and BESSY intwo Synchrotron Facilities, the ALS in Berkeley and Bessy in

  13. ambient temperature: Topics by E-print Network

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

    efficiency of combine cycle power plant keeping the gas turbine efficiency as well as steam turbine efficiency constant. The results shows that out of three variables i.e....

  14. ambient temperature razrabotka: Topics by E-print Network

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

    efficiency of combine cycle power plant keeping the gas turbine efficiency as well as steam turbine efficiency constant. The results shows that out of three variables i.e....

  15. Ambient Air Quality Standards (New Jersey)

    Broader source: Energy.gov [DOE]

    This article lists specific standards for ambient air quality standards for particulate matter, sulfur dioxide, carbon monoxide, ozone, lead and nitrogen dioxide.

  16. Ambient Air Quality Standards (New Mexico)

    Broader source: Energy.gov [DOE]

    This regulation establishes ambient air quality standards for the areas of New Mexico under the jurisdiction of the Environmental Improvement Board. The maximum allowable concentrations of total...

  17. MEAN TEMPERATURE RISE IN A TARGET Keith Symon LS-99

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

    by formula (8), which is therefore conservative. The thermal conductivity of tungsten at room temperature is 0.5 calsec cm degC, and about half that at 2000C. The...

  18. Temperature-sensitive optrode

    DOE Patents [OSTI]

    Hirschfeld, T.B.

    1985-09-24T23:59:59.000Z

    Method and apparatus are provided for measuring temperature and for generating optical signals related to temperature. Light from a fiber optic is directed to a material whose fluorescent response varies with ambient temperature. The same fiber optic delivering the excitation beam also collects a portion of the fluorescent emission for analysis. Signal collection efficiency of the fiber optic is enhanced by requiring that the fluorescent probe material be in the shape of an oblong parabolically tapered solid. Reproducibility is enhanced by using Raman backscatter to monitor excitation beam fluctuations, and by using measurements of fluorescence lifetime. 10 figs.

  19. Autocatalytic water dissociation on Cu(110) at near ambient conditions

    SciTech Connect (OSTI)

    Mulleregan, Alice; Andersson, Klas; Ketteler, Guido; Bluhm, Hendrik; Yamamoto, Susumu; Ogasawara, Hirohito; Pettersson, Lars G.M.; Salmeron, Miquel; Nilsson, Anders

    2007-05-16T23:59:59.000Z

    Autocatalytic dissociation of water on the Cu(110) metal surface is demonstrated based on X-ray photoelectron spectroscopy studies carried out in-situ under near ambient conditions of water vapor pressure (1 Torr) and temperature (275-520 K). The autocatalytic reaction is explained as the result of the strong hydrogen-bond in the H{sub 2}O-OH complex of the dissociated final state, which lowers the water dissociation barrier according to the Broensted-Evans-Polanyi relations. A simple chemical bonding picture is presented which predicts autocatalytic water dissociation to be a general phenomenon on metal surfaces.

  20. Universit degli Studi di Roma "La Sapienza" Dipartimento di Economia e Diritto

    E-Print Network [OSTI]

    Guidoni, Leonardo

    Università degli Studi di Roma "La Sapienza" Dipartimento di Economia e Diritto Via del Castro Laurenziano, 9 00161Roma T (+39) 06 49766349 F (+39) 06 49766811 www.uniroma1.it Dipartimento di Economia e TUTORATO, DA ATTIVARE PER LE ESIGENZE DEL DIPARTIMENTO DI ECONOMIA E DIRITTO DELL'UNIVERSITA' DEGLI STUDI

  1. Universit degli Studi di Roma "La Sapienza" Dipartimento di Economia e Diritto

    E-Print Network [OSTI]

    Guidoni, Leonardo

    Università degli Studi di Roma "La Sapienza" Dipartimento di Economia e Diritto Via Del Castro DI ECONOMIA E DIRITTO DELL'UNIVERSITA' DEGLI STUDI DI ROMA "LA SAPIENZA" Bando per procedura competenze adeguate per far fronte alle esigenze rappresentate dal Dipartimento di Economia e Diritto E

  2. Universit degli Studi di Roma "La Sapienza" Dipartimento di Economia e Diritto

    E-Print Network [OSTI]

    Guidoni, Leonardo

    Università degli Studi di Roma "La Sapienza" Dipartimento di Economia e Diritto Via Del Castro DIPARTIMENTO DI ECONOMIA E DIRITTO DELL'UNIVERSITA' DEGLI STUDI DI ROMA "LA SAPIENZA" Bando per procedura competenze adeguate per far fronte alle esigenze rappresentate dal Dipartimento di Economia e Diritto E

  3. ORE 14,00 -Gioved Saluti: Gianluca Vago Magnifico Rettore dell'Universit degli Studi di

    E-Print Network [OSTI]

    De Cindio, Fiorella

    Cile. La memorialistica politica cilena dopo la dittatura Tiziana Bertaccini Università degli Studi di Torino "México para los chilenos, y Chile para los mexicanos": la nuova politica estera di Luis Echeverría Laura Scarabelli Università degli Studi di Milano Diamela Eltit: etica, estetica e politica della

  4. Achieving 50% ionization efficiency in sub-ambient pressure ionization...

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

    50% ionization efficiency in sub-ambient pressure ionization with nanoelectrospray. Achieving 50% ionization efficiency in sub-ambient pressure ionization with nanoelectrospray....

  5. ambiental para empresas: Topics by E-print Network

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

    ambiental da (more) Perrone Oviedo, Antnio Francisco 2006-01-01 45 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  6. ambiental na implementacao: Topics by E-print Network

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

    conditions using ambient air quality data Mulholland, James A. 9 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  7. al riesgo ambiental: Topics by E-print Network

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

    sociedades y medio ambiente. De hecho, es el objeto de la Boyer, Edmond 11 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  8. ambiente integrado para: Topics by E-print Network

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

    ambiental da (more) Perrone Oviedo, Antnio Francisco 2006-01-01 32 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  9. ambiental em localidade: Topics by E-print Network

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

    conditions using ambient air quality data Mulholland, James A. 28 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  10. ambiente prehospitalario peruano: Topics by E-print Network

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

    conditions using ambient air quality data Mulholland, James A. 5 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  11. avaliacao ambiental estrategica: Topics by E-print Network

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

    conditions using ambient air quality data Mulholland, James A. 2 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  12. ambiental aspetti energetici: Topics by E-print Network

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

    conditions using ambient air quality data Mulholland, James A. 9 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  13. ambiental factor creador: Topics by E-print Network

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

    conditions using ambient air quality data Mulholland, James A. 3 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  14. ambientes costeiros tropicais: Topics by E-print Network

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

    conditions using ambient air quality data Mulholland, James A. 5 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  15. ambiental estrategica para: Topics by E-print Network

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

    ambiental da (more) Perrone Oviedo, Antnio Francisco 2006-01-01 25 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  16. ambiental em escala: Topics by E-print Network

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

    conditions using ambient air quality data Mulholland, James A. 37 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  17. ambientes internos na: Topics by E-print Network

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

    conditions using ambient air quality data Mulholland, James A. 23 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  18. ambiental seguranca qualidade: Topics by E-print Network

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

    conditions using ambient air quality data Mulholland, James A. 2 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  19. ambiente hospitalar uma: Topics by E-print Network

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

    conditions using ambient air quality data Mulholland, James A. 15 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  20. altas temperaturas ambientes: Topics by E-print Network

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

    conditions using ambient air quality data Mulholland, James A. 8 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  1. ambiente para peso: Topics by E-print Network

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

    ambiental da (more) Perrone Oviedo, Antnio Francisco 2006-01-01 28 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  2. ambiente para planejamento: Topics by E-print Network

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

    ambiental da (more) Perrone Oviedo, Antnio Francisco 2006-01-01 38 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  3. ambiental para uso: Topics by E-print Network

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

    ambiental da (more) Perrone Oviedo, Antnio Francisco 2006-01-01 49 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  4. ambiental da transpetro: Topics by E-print Network

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

    importante no ambiente (more) Pereira, Mariana de Oliveira 2012-01-01 18 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  5. ambiental del municipio: Topics by E-print Network

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

    riego (more) Calgua de Len, Byron Tomas 2013-01-01 3 Prcticas de Evaluacin del Impacto Ambiental Revisin de Estudios de Impacto Ambiental Environmental Sciences and...

  6. ambiente da terapia: Topics by E-print Network

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

    importante no ambiente (more) Pereira, Mariana de Oliveira 2012-01-01 25 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  7. ambiental em areas: Topics by E-print Network

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

    conditions using ambient air quality data Mulholland, James A. 33 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  8. ambiente controlado para: Topics by E-print Network

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

    ambiental da (more) Perrone Oviedo, Antnio Francisco 2006-01-01 28 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  9. amendoim em ambiente: Topics by E-print Network

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

    conditions using ambient air quality data Mulholland, James A. 27 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  10. ambiental para comunidades: Topics by E-print Network

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

    ambiental da (more) Perrone Oviedo, Antnio Francisco 2006-01-01 34 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  11. ambiental em radioterapia: Topics by E-print Network

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

    conditions using ambient air quality data Mulholland, James A. 28 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  12. ambientes climatizados portaria: Topics by E-print Network

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

    conditions using ambient air quality data Mulholland, James A. 4 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  13. almacenadas al ambiente: Topics by E-print Network

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

    conditions using ambient air quality data Mulholland, James A. 6 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  14. ambiental para faixas: Topics by E-print Network

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

    ambiental da (more) Perrone Oviedo, Antnio Francisco 2006-01-01 25 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  15. ambiente protegido em: Topics by E-print Network

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

    conditions using ambient air quality data Mulholland, James A. 28 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  16. ambientes aquaticos adjacentes: Topics by E-print Network

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

    conditions using ambient air quality data Mulholland, James A. 3 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  17. ambiente em codornas: Topics by E-print Network

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

    conditions using ambient air quality data Mulholland, James A. 27 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  18. ambiental para empregados: Topics by E-print Network

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

    ambiental da (more) Perrone Oviedo, Antnio Francisco 2006-01-01 28 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  19. ambiental para deposicao: Topics by E-print Network

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

    ambiental da (more) Perrone Oviedo, Antnio Francisco 2006-01-01 25 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  20. ambiental na bacia: Topics by E-print Network

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

    conditions using ambient air quality data Mulholland, James A. 16 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  1. ambiental para poblaciones: Topics by E-print Network

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

    ambiental da (more) Perrone Oviedo, Antnio Francisco 2006-01-01 26 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  2. ambiente na periferia: Topics by E-print Network

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

    conditions using ambient air quality data Mulholland, James A. 10 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  3. al humo ambiental: Topics by E-print Network

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

    conditions using ambient air quality data Mulholland, James A. 6 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  4. ambiental para implantacao: Topics by E-print Network

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

    ambiental da (more) Perrone Oviedo, Antnio Francisco 2006-01-01 25 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  5. adecuada al ambiente: Topics by E-print Network

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

    conditions using ambient air quality data Mulholland, James A. 7 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  6. ambiental em corredores: Topics by E-print Network

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

    conditions using ambient air quality data Mulholland, James A. 30 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  7. acessibilidade em ambiente: Topics by E-print Network

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

    conditions using ambient air quality data Mulholland, James A. 29 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  8. ambiental em praias: Topics by E-print Network

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

    conditions using ambient air quality data Mulholland, James A. 30 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  9. ambientes virtuais na: Topics by E-print Network

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

    conditions using ambient air quality data Mulholland, James A. 20 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  10. avaliacao ambiental para: Topics by E-print Network

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

    ambiental da (more) Perrone Oviedo, Antnio Francisco 2006-01-01 26 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  11. ambiental como tecnica: Topics by E-print Network

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

    conditions using ambient air quality data Mulholland, James A. 16 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  12. asegurar justicia ambiental: Topics by E-print Network

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

    conditions using ambient air quality data Mulholland, James A. 6 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  13. ambiental da regiao: Topics by E-print Network

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

    importante no ambiente (more) Pereira, Mariana de Oliveira 2012-01-01 19 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  14. ambiental considerando inovacoes: Topics by E-print Network

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

    conditions using ambient air quality data Mulholland, James A. 5 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  15. ambientes sensibles isla: Topics by E-print Network

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

    conditions using ambient air quality data Mulholland, James A. 28 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  16. ambiental caso cundinamarca: Topics by E-print Network

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

    conditions using ambient air quality data Mulholland, James A. 5 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  17. ambiente tabuleiros costeiros: Topics by E-print Network

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

    conditions using ambient air quality data Mulholland, James A. 3 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  18. ambientes alterados limitaciones: Topics by E-print Network

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

    conditions using ambient air quality data Mulholland, James A. 3 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  19. ambiental asociados con: Topics by E-print Network

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

    conditions using ambient air quality data Mulholland, James A. 8 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  20. ambiental relacionados con: Topics by E-print Network

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

    conditions using ambient air quality data Mulholland, James A. 13 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  1. ambientes desconhecidos utilizando: Topics by E-print Network

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

    conditions using ambient air quality data Mulholland, James A. 4 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  2. ambientes reducidos para: Topics by E-print Network

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

    ambiental da (more) Perrone Oviedo, Antnio Francisco 2006-01-01 27 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  3. ambiente nas cidades: Topics by E-print Network

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

    conditions using ambient air quality data Mulholland, James A. 8 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  4. ambiental da escola: Topics by E-print Network

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

    importante no ambiente (more) Pereira, Mariana de Oliveira 2012-01-01 30 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  5. ambiente para atividade: Topics by E-print Network

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

    ambiental da (more) Perrone Oviedo, Antnio Francisco 2006-01-01 38 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  6. Thermoelectric power source utilizing ambient energy harvesting for remote sensing and transmitting

    DOE Patents [OSTI]

    DeSteese, John G

    2010-11-16T23:59:59.000Z

    A method and apparatus for providing electrical energy to an electrical device wherein the electrical energy is originally generated from temperature differences in an environment having a first and a second temperature region. A thermoelectric device having a first side and a second side wherein the first side is in communication with a means for transmitting ambient thermal energy collected or rejected in the first temperature region and the second side is in communication with the second temperature region thereby producing a temperature gradient across the thermoelectric device and in turn generating an electrical current.

  7. Chapter 53 Ambient Air Quality (Kentucky)

    Broader source: Energy.gov [DOE]

    Kentucky Administrative Regulation Chapter 53, entitled Ambient Air Quality, is promulgated under the authority of the Division of Air Quality within the Energy and Environment Cabinet’s Department...

  8. Robust Speech Recognition Under Noisy Ambient

    E-Print Network [OSTI]

    .................................................................... 142 6.4.1 Speech Enhancement Techniques .......................................................... 143CHAPTER Robust Speech Recognition Under Noisy Ambient Conditions 6Kuldip K. Paliwal School of Microelectronic Engineering, Griffith University, Brisbane, Australia Kaisheng Yao Speech Component Group

  9. MAS.963 Ambient Intelligence, Spring 2004

    E-Print Network [OSTI]

    Maes, Patricia

    This course focuses on Ambient Intelligence, and how it envisions a world where people are surrounded by intelligent and intuitive interfaces embedded in the everyday objects around them. These interfaces recognize and ...

  10. Ambient-pressure organic superconductor

    DOE Patents [OSTI]

    Williams, Jack M. (Downers Grove, IL); Wang, Hsien-Hau (Willowbrook, IL); Beno, Mark A. (Woodridge, IL)

    1986-01-01T23:59:59.000Z

    A new class of organic superconductors having the formula (ET).sub.2 MX.sub.2 wherein ET represents bis(ethylenedithio)-tetrathiafulvalene, M is a metal such as Au, Ag, In, Tl, Rb, Pd and the like and X is a halide. The superconductor (ET).sub.2 AuI.sub.2 exhibits a transition temperature of 5 K which is high for organic superconductors.

  11. CursodeEvaluacindeImpactoAmbiental PROCEDIMIENTO ADMINISTRATIVO DE LA

    E-Print Network [OSTI]

    Espigares, Tíscar

    Ministerio de Medio Ambiente, y Medio Rural y Marino. · El proceso de Evaluación Ambiental de Proyectos a disfrutar de un medio ambiente adecuado para el desarrollo de la persona, así como el deber de conservarlo determinados planes y programas en el medio ambiente. · Marco Autonómico: Desarrollo a nivel de CCAA de la

  12. Universit degli Studi di Roma "La Sapienza" Dipartimento di Economia Pubblica

    E-Print Network [OSTI]

    Guidoni, Leonardo

    Università degli Studi di Roma "La Sapienza" Dipartimento di Economia Pubblica Via del Castro Dipartimento di Economia Pubblica intende conferire un incarico didattico nell'ambito del Master di Economia seguenti insegnamenti: - Fondi strutturali comunitari - Economia sanitaria - Diritto amministrativo

  13. 2DEG electrodes for piezoelectric transduction of AlGaN/GaN MEMS resonators

    E-Print Network [OSTI]

    Weinstein, Dana

    A 2D electron gas (2DEG) interdigitated transducer (IDT) in Gallium Nitride (GaN) resonators is introduced and demonstrated. This metal-free transduction does not suffer from the loss mechanisms associated with more commonly ...

  14. High temperature ceramic composition for hydrogen retention

    DOE Patents [OSTI]

    Webb, R.W.

    1974-01-01T23:59:59.000Z

    A ceramic coating for H retention in fuel elements is described. The coating has relatively low thermal neutron cross section, is not readily reduced by H at 1500 deg F, is adherent to the fuel element base metal, and is stable at reactor operating temperatures. (JRD)

  15. SDSS 0.5 x 0.5 sq.deg Luhman et al. (2009)

    E-Print Network [OSTI]

    Joergens, Viki

    2009-01-01T23:59:59.000Z

    SDSS 0.5 x 0.5 sq.deg Luhman et al. (2009) FU Tau Accre?on and ac) #12;SDSS 0.5 x 0.5 sq.deg Luhman et al. (2009) Isolated wide brown dwarf?vity on the BD FU Tau A, a testbed for evolu?onary models #12;SDSS 0.5 x 0.5 sq

  16. Projection screen having reduced ambient light scattering

    DOE Patents [OSTI]

    Sweatt, William C. (Albuquerque, NM)

    2010-05-11T23:59:59.000Z

    An apparatus and method for improving the contrast between incident projected light and ambient light reflected from a projection screen are described. The efficiency of the projection screen for reflection of the projected light remains high, while permitting the projection screen to be utilized in a brightly lighted room. Light power requirements from the projection system utilized may be reduced.

  17. Ambient Telepresence: Colleague Awareness in Smart Environments

    E-Print Network [OSTI]

    Beigl, Michael

    · Building smartness into the things that surround us rather than introducing new smart devices · CollectingAmbient Telepresence: Colleague Awareness in Smart Environments Hans-W. Gellersen and Michael Beigl-located. In this approach, everyday things that people use are augmented with awareness technology, creating a smart

  18. RADIONUCLIDE TRANSPORT MODELS UNDER AMBIENT CONDITIONS

    SciTech Connect (OSTI)

    S. Magnuson

    2004-11-01T23:59:59.000Z

    The purpose of this model report is to document the unsaturated zone (UZ) radionuclide transport model, which evaluates, by means of three-dimensional numerical models, the transport of radioactive solutes and colloids in the UZ, under ambient conditions, from the repository horizon to the water table at Yucca Mountain, Nevada.

  19. Radionuclide Transport Models Under Ambient Conditions

    SciTech Connect (OSTI)

    G. Moridis; Q. Hu

    2001-12-20T23:59:59.000Z

    The purpose of Revision 00 of this Analysis/Model Report (AMR) is to evaluate (by means of 2-D semianalytical and 3-D numerical models) the transport of radioactive solutes and colloids in the unsaturated zone (UZ) under ambient conditions from the potential repository horizon to the water table at Yucca Mountain (YM), Nevada.

  20. SEISMIC VULNERABILITY ASSESSMENT USING AMBIENT VIBRATIONS

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    SEISMIC VULNERABILITY ASSESSMENT USING AMBIENT VIBRATIONS: METHOD AND VALIDATION Clotaire Michel, France cmichel@obs.ujf-grenoble.fr Abstract Seismic vulnerability in wide areas is usually assessed like USA or Italy. France is a country with moderate seismicity so that it requires lower-cost methods

  1. System Temperature Measurement of RPA Antenna 1: 30 March 2001

    E-Print Network [OSTI]

    Backer, Don

    System Temperature Measurement of RPA Antenna 1: 30 March 2001 Jon Swift Introduction I followed a feed temperature of 15K Figure 1: Time series of measurements made on the RPA antenna 1. ``Hot'' is the ambient temperature and ``Cold'' is the temperature of LN2. Other relevant information is shown in the top

  2. Battery Energy Availability and Consumption during Vehicle Charging across Ambient Temperatures and Battery Temperature (conditioning)

    Broader source: Energy.gov [DOE]

    2013 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting

  3. 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...

  4. ambient particulate air: Topics by E-print Network

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

    16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 ORIGINAL ARTICLE Ambient Air Pollution Engineering Websites Summary: ORIGINAL ARTICLE Ambient Air Pollution and...

  5. ambient air particulate: Topics by E-print Network

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

    16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 ORIGINAL ARTICLE Ambient Air Pollution Engineering Websites Summary: ORIGINAL ARTICLE Ambient Air Pollution and...

  6. ambient air exposures: Topics by E-print Network

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

    16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 ORIGINAL ARTICLE Ambient Air Pollution Engineering Websites Summary: ORIGINAL ARTICLE Ambient Air Pollution and...

  7. ambient air pollutants: Topics by E-print Network

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

    16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 ORIGINAL ARTICLE Ambient Air Pollution Engineering Websites Summary: ORIGINAL ARTICLE Ambient Air Pollution and...

  8. ambient computing research: Topics by E-print Network

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

    ambient occlusion computation Mirko Sattler, Ralf Sarlette, Gabriel Zachmann, Reinhard Klein Computer Technologies and Information Sciences Websites Summary:...

  9. AN EARLY WARNING SYSTEM FOR AMBIENT ASSISTED LIVING

    E-Print Network [OSTI]

    Karlsson, Brynjar

    AN EARLY WARNING SYSTEM FOR AMBIENT ASSISTED LIVING June 2012 Andrea Monacchi Master of Science in Computer Science #12;#12;AN EARLY WARNING SYSTEM FOR AMBIENT ASSISTED LIVING Andrea Monacchi Master ISSN 1670-8539 #12;#12;An Early Warning System for Ambient Assisted Living by Andrea Monacchi Project

  10. Volatile Organic Compounds in Untreated Ambient Groundwater of

    E-Print Network [OSTI]

    Volatile Organic Compounds in Untreated Ambient Groundwater of the United States, 1985-1995 P A U L, ambient groundwater of the conterminous United States was conducted based on samples collected from 2948-chloropropane, which had a reporting level of 1.0 µg/L. Because ambient groundwater was targeted, areas of known

  11. Aerosol collection characteristics of ambient aerosol samplers

    E-Print Network [OSTI]

    Ortiz, Carlos A

    1978-01-01T23:59:59.000Z

    are contained in Appendix C. Dichotomous Sam ler The basic principle of operation of the dichotomous, Figure 9, is that aerosol particles are passed through an acceleration nozzle where the particle velocity is increased to a speed V. at the nozzle exit... AEROSOL COLLECTION CHARACTERISTICS OF AMBIENT AEROSOL SAMPLERS A Thesis by CARLOS A. ORTIZ Submitted to the Graduate College of Texas ARM University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE December 1978...

  12. Electric Power From Ambient Energy Sources

    SciTech Connect (OSTI)

    DeSteese, John G.; Hammerstrom, Donald J.; Schienbein, Lawrence A.

    2000-10-03T23:59:59.000Z

    This report summarizes research on opportunities to produce electric power from ambient sources as an alternative to using portable battery packs or hydrocarbon-fueled systems in remote areas. The work was an activity in the Advanced Concepts Project conducted by Pacific Northwest National Laboratory (PNNL) for the Office of Research and Development in the U.S. Department of Energy Office of Nonproliferation and National Security.

  13. Facolt di Ingegneria Civile e Industriale Universit degli Studi di Roma "Sapienza"

    E-Print Network [OSTI]

    Guidoni, Leonardo

    RELAZIONE DEL NVF-INGEGNERIA CIVILE E INDUSTRIALE SULLA RILEVAZIONE OPIS A.A. 2010-2011 Con riferimento alla incentivare la compilazione dei questionari Rilevazione delle Opinioni (OPIS) da parte degli studenti, la prenotazione, affinché tutti gli studenti effettuato opis, prima di iscriversi ad un esame, non funziona

  14. Universit a degli Studi di Bologna Using Abductive Logic Agents for

    E-Print Network [OSTI]

    Torroni, Paolo

    Universit#18;a degli Studi di Bologna DEIS Using Abductive Logic Agents for Legal Justi#12;cation A Abductive Logic Agents for Legal Justi#12;cation A. Ciampolini P. Torroni DEIS, Universit#18;a di Bologna. In this paper we present a novel approach for legal justi#12;cation based on an abductive multi-agent system

  15. Universit degli Studi di Roma "La Sapienza" Dipartimento di Economia e Diritto

    E-Print Network [OSTI]

    Guidoni, Leonardo

    Università degli Studi di Roma "La Sapienza" Dipartimento di Economia e Diritto Via del Castro Laurenziano, 9 00161 Roma T (+39) 06 49766119 F (+39) 06 149766811 Dipartimento di Economia e Diritto AVVISO.D. n° 888 del 24.09.2008, si rende noto che il Dipartimento di Economia e Diritto intende conferire un

  16. Universit degli Studi di Roma "La Sapienza" Dipartimento di Economia e Diritto

    E-Print Network [OSTI]

    Guidoni, Leonardo

    Università degli Studi di Roma "La Sapienza" Dipartimento di Economia e Diritto Via del Castro Laurenziano, 9 00161 Roma T (+39) 06 49766119 F (+39) 06 149766811 Dipartimento di Economia e Diritto AVVISO.D. n° 888 del 24.09.2008, si rende noto che il Dipartimento di Economia e Diritto intende conferire

  17. Universit degli Studi di Roma "La Sapienza" Dipartimento di Economia e Diritto

    E-Print Network [OSTI]

    Guidoni, Leonardo

    Università degli Studi di Roma "La Sapienza" Dipartimento di Economia e Diritto Via del Castro Laurenziano, 9 00161Roma T (+39) 06 49766349 F (+39) 06 49766811 www.uniroma1.it Dipartimento di Economia e.08.2008 e rettificato con D.D. n° 888 del 24.09.2008, si rende noto che il Dipartimento di Economia e

  18. Universit degli Studi di Roma "La Sapienza" Dipartimento di Economia e Diritto

    E-Print Network [OSTI]

    Guidoni, Leonardo

    Università degli Studi di Roma "La Sapienza" Dipartimento di Economia e Diritto Via del Castro Laurenziano, 9 00161 Roma T (+39) 06 49766119 F (+39) 06 149766811 Dipartimento di Economia e Diritto AVVISO.08.2008 e rettificato con D.D. n° 888 del 24.09.2008, si rende noto che il Dipartimento di Economia e

  19. Universit degli Studi di Roma "La Sapienza" Dipartimento di Economia e Diritto

    E-Print Network [OSTI]

    Guidoni, Leonardo

    Università degli Studi di Roma "La Sapienza" Dipartimento di Economia e Diritto Via del Castro Laurenziano, 9 00161Roma T (+39) 06 49766349 F (+39) 06 49766811 www.uniroma1.it Dipartimento di Economia e.D. n° 888 del 24.09.2008, si rende noto che il Dipartimento di Economia e Diritto intende conferire un

  20. Universit degli Studi di Roma "La Sapienza" Dipartimento di Economia Pubblica

    E-Print Network [OSTI]

    Guidoni, Leonardo

    Università degli Studi di Roma "La Sapienza" Dipartimento di Economia Pubblica Via del Castro.09.2008, si rende noto che il Dipartimento di Economia e Diritto intende conferire un incarico per lo svolgimento dell'attività di tutor nell'ambito del Master in Economia Pubblica, responsabile scientifico prof

  1. Universit degli Studi di Roma "La Sapienza" Dipartimento di Economia e Diritto

    E-Print Network [OSTI]

    Guidoni, Leonardo

    Università degli Studi di Roma "La Sapienza" Dipartimento di Economia e Diritto Via Del Castro MASTER DI ECONOMIA PUBBLICA Bando per procedura comparativa n. 3/2014 Visto il Regolamento per l rappresentate dal Dipartimento di Economia e Diritto E' INDETTA una procedura di valutazione comparativa, per

  2. Universit degli Studi di Roma "La Sapienza" Dipartimento di Economia e Diritto

    E-Print Network [OSTI]

    Guidoni, Leonardo

    Università degli Studi di Roma "La Sapienza" Dipartimento di Economia e Diritto Via del Castro Laurenziano, 9 00161 Roma T (+39) 06 49766119 F (+39) 06 149766811 Dipartimento di Economia e Diritto AVVISO.D. n° 888 del 24.09.2008, si rende noto che il Dipartimento di Economia e Diritto intende conferire n

  3. Universit degli Studi di Roma "La Sapienza" Dipartimento di Economia Pubblica

    E-Print Network [OSTI]

    Guidoni, Leonardo

    Università degli Studi di Roma "La Sapienza" Dipartimento di Economia Pubblica Via del Castro.09.2008, si rende noto che il Dipartimento di Economia Pubblica intende conferire un incarico per lo svolgimento dell'attività di programmazione e valutazione nell'ambito del Master in Economia Pubblica

  4. Universit degli Studi di Roma "La Sapienza" Dipartimento di Economia Pubblica

    E-Print Network [OSTI]

    Guidoni, Leonardo

    Università degli Studi di Roma "La Sapienza" Dipartimento di Economia Pubblica Via del Castro.09.2008, si rende noto che il Dipartimento di Economia Pubblica intende conferire un incarico per lo svolgimento dell'attività di tutor nell'ambito del Master in Economia Pubblica, responsabile scientifico prof

  5. Universit degli Studi di Roma "La Sapienza" Segreteria studenti di Economia

    E-Print Network [OSTI]

    Di Pillo, Gianni

    Università degli Studi di Roma "La Sapienza" Segreteria studenti di Economia Via del Castro Laurenziano n. 9, 00185 Roma http://www.uniroma1.it/segrstudenti/economia segrstudenti.economia@uniroma1.it Segreteria Studenti dei corsi di Economia Promemoria per i laureandi della sessione Invernale a.a. 2012

  6. Universit degli Studi di Roma "La Sapienza" Dipartimento di Economia Pubblica

    E-Print Network [OSTI]

    Guidoni, Leonardo

    Università degli Studi di Roma "La Sapienza" Dipartimento di Economia Pubblica Via del Castro.09.2008, si rende noto che il Dipartimento di Economia Pubblica intende conferire un incarico per lo in Economia o in materie affini 2. Esperienza di ricerca e di analisi quantitativa, su temi di economia

  7. Universit degli Studi di Roma "La Sapienza" Dipartimento di Economia Pubblica

    E-Print Network [OSTI]

    Guidoni, Leonardo

    Università degli Studi di Roma "La Sapienza" Dipartimento di Economia Pubblica Via del Castro Dipartimento di Economia Pubblica intende conferire un incarico per lo svolgimento dell'attività di Dipartimento di Economia Pubblica e l'Ateneo, relative a progetti di ricerca affidati anche da enti esterni

  8. Universit degli Studi di Roma "La Sapienza" Dipartimento di Economia e Diritto

    E-Print Network [OSTI]

    Guidoni, Leonardo

    Università degli Studi di Roma "La Sapienza" Dipartimento di Economia e Diritto Via Del Castro MASTER DI ECONOMIA PUBBLICA Bando per procedura comparativa n. 7/2014 Visto il Regolamento per l rappresentate dal Dipartimento di Economia e Diritto E' INDETTA una procedura di valutazione comparativa, per

  9. Universit degli Studi di Roma "La Sapienza" Dipartimento di Economia e Diritto

    E-Print Network [OSTI]

    Guidoni, Leonardo

    Università degli Studi di Roma "La Sapienza" Dipartimento di Economia e Diritto Via Del Castro MASTER DI ECONOMIA PUBBLICA Bando per procedura comparativa n. 7/2013 Visto il Regolamento per l rappresentate dal Dipartimento di Economia e Diritto E' INDETTA una procedura di valutazione comparativa, per

  10. Universit degli Studi di Roma "La Sapienza" Dipartimento di Economia Pubblica

    E-Print Network [OSTI]

    Guidoni, Leonardo

    Università degli Studi di Roma "La Sapienza" Dipartimento di Economia Pubblica Via del Castro.09.2008, si rende noto che il Dipartimento di Economia Pubblica intende conferire un incarico per lo. Laurea in Economia e Commercio 2. Esperienza nella raccolta ed elaborazione dati e nella gestione di

  11. Universit degli Studi di Roma "La Sapienza" Dipartimento di Economia Pubblica

    E-Print Network [OSTI]

    Guidoni, Leonardo

    Università degli Studi di Roma "La Sapienza" Dipartimento di Economia Pubblica Via del Castro.09.2008, si rende noto che il Dipartimento di Economia Pubblica intende conferire un incarico per lo inserimento dati. COMPETENZE DEL PRESTATORE: 1. Laurea in Economia e Commercio 2. Esperienza nel campo della

  12. Universit degli Studi di Roma "La Sapienza" Dipartimento di Economia Pubblica

    E-Print Network [OSTI]

    Guidoni, Leonardo

    Università degli Studi di Roma "La Sapienza" Dipartimento di Economia Pubblica Via del Castro.09.2008, si rende noto che il Dipartimento di Economia Pubblica intende conferire un incarico per lo svolgimento dell'attività di docenza nell'ambito del Master in Economia Pubblica, responsabile scientifico

  13. UFFICIO STAMPA Per maggiori informazioni: Ufficio Stampa dell'Universit degli Studi di Trento

    E-Print Network [OSTI]

    politica Primo degli appuntamenti per la nuova rassegna di incontri culturali "La sfida del linguaggio e varie tematiche di interesse generale e di attualità: dalla filosofia, alla politica, dal linguaggio nome, essa è chiamata democrazia». Le parole e la politica. Il prossimo appuntamento sarà poi per

  14. UNIVERSIT DEGLI STUDI DI PAVIA DIPARTIMENTO DI ECONOMIA POLITICA E METODI QUANTITATIVI

    E-Print Network [OSTI]

    Segatti, Antonio

    UNIVERSITÀ DEGLI STUDI DI PAVIA DIPARTIMENTO DI ECONOMIA POLITICA E METODI QUANTITATIVI PREMIO PER LA RICERCA 2009 Pavia, 14 dicembre 2009 Il Dipartimento di Economia Politica e DI ECONOMIA POLITICA E METODI QUANTITATIVI PREMIO PER LA RICERCA 2009 Area Economica 1) Roberto

  15. UFFICIO STAMPA Per maggiori informazioni: Ufficio Stampa dell'Universit degli Studi di Trento

    E-Print Network [OSTI]

    l'interesse per i diversi sistemi e metodi di governo d'impresa. Per comprenderne punti di forza e controllate, le linee guida di governo societario, le tecniche di investimento e gli effetti della separazione imprese all'Università degli studi di Trento. La lezione tratterà alcuni profili del governo societario

  16. Investigation of hydrogen induced cracking in 2205 duplex stainless steel in wet H{sub 2}S environments after isothermal treatment at 675, 750 and 900 deg. C

    SciTech Connect (OSTI)

    Sozanska, Maria [Department of Materials Science, Silesian University of Technology, Krasinskiego 8, 40-019 Katowice (Poland)]. E-mail: maria.sozanska@polsl.pl; Klyk-Spyra, Katarzyna [Department of Materials Science, Silesian University of Technology, Krasinskiego 8, 40-019 Katowice (Poland)

    2006-06-15T23:59:59.000Z

    The effect of isothermal treatment (at 675, 750 and 900 deg. C) on HIC (hydrogen induced cracking) in sour environments containing hydrogen sulphide of a 2205 duplex stainless steel has been investigated. The performance and microstructure of failed material were characterized by optical microscopy, scanning electron microscopy and also X-ray diffraction. Two kinds of Cr-, Mo-enriched intermetallic phases, {sigma} and {chi}, were found to precipitate preferentially at {alpha}/{gamma} interfaces and within {alpha} grains after different times of aging in the temperature range of 650-900 deg. C. After performing tests according to the NACE Standard TM 0284 (1987) the specimens were investigated by using quantitative metallography methods. The volume fraction of {sigma} phase was changed with the time of aging and {sigma} phase developed into coarse particles due to the high diffusibility of solute atoms at high temperatures. The variation of size and shape of {sigma} phase particles was obtained by applying different heat treatment conditions to 2205 steel specimens. The results showed that 2205 duplex stainless steel containing nearly 12 vol.% of {sigma} phase in dispersed conditions was resistant to step cracking in wet environments containing hydrogen sulphide. It was highly possible that a crack would propagate faster along the embrittled {sigma} phase. However, very small cracks were found at austenite-ferrite boundaries where o phase particles were also present.

  17. Trama Tecno Ambiental | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-f <MaintainedInformationThePtyTownTrama Tecno Ambiental Jump to:

  18. MDL Ambiente Ltd | Open Energy Information

    Open Energy Info (EERE)

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

  19. Ambient Hydro Ltd | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-fTriWildcat Place:Alvan Blanch Green FuelsEnergyAmandus KahlAmbient Hydro

  20. Low-temperature germanium ultra-high vacuum chemical vapor deposition for back-end photonic integration

    E-Print Network [OSTI]

    Kimerling, Lionel C.

    Polycrystalline germanium (poly-Ge) grown on amorphous Si (a-Si) by ultra-high vacuum chemical vapor deposition (UHVCVD) over oxide barriers at low temperatures (Tles450degC) exhibits a larger grain size and lower defect ...

  1. Temperature stability of intersubband transitions in AlN/GaN quantum wells

    SciTech Connect (OSTI)

    Berland, Kristian; Stattin, Martin; Farivar, Rashid; Sultan, D. M. S.; Hyldgaard, Per; Larsson, Anders; Wang, Shu Min; Andersson, Thorvald G. [Department of Microtechnology and Nanoscience, MC2, Chalmers University of Technology, SE-41296 Goeteborg (Sweden)

    2010-07-26T23:59:59.000Z

    Temperature dependence of intersubband transitions in AlN/GaN multiple quantum wells grown with molecular beam epitaxy is investigated both by absorption studies at different temperatures and modeling of conduction-band electrons. For the absorption study, the sample is heated in increments up to 400 deg. C. The self-consistent Schroedinger-Poisson modeling includes temperature effects of the band gap and the influence of thermal expansion on the piezoelectric field. We find that the intersubband absorption energy decreases only by approx6 meV at 400 deg. C relative to its room temperature value.

  2. Ambient Operation of Li/Air Batteries

    SciTech Connect (OSTI)

    Zhang, Jiguang; Wang, Deyu; Xu, Wu; Xiao, Jie; Williford, Ralph E.

    2010-07-01T23:59:59.000Z

    In this work, Li/air batteries based on nonaqueous electrolytes were investigated in ambient conditions (with an oxygen partial pressure of 0.21 atm and relative humidity of ~20%). A heat-sealable polymer membrane was used as both an oxygen-diffusion membrane and as a moisture barrier for Li/air batteries. The membrane also can minimize the evaporation of the electrolyte from the batteries. Li/air batteries with this membrane can operate in ambient conditions for more than one month with a specific energy of 362 Wh kg-1, based on the total weight of the battery including its packaging. Among various carbon sources used in this work, Li/air batteries using Ketjenblack (KB) carbon-based air electrodes exhibited the highest specific energy. However, KB-based air electrodes expanded significantly and absorbed much more electrolyte than electrodes made from other carbon sources. The weight distribution of a typical Li/air battery using the KB-based air electrode was dominated by the electrolyte (~70%). Lithium-metal anodes and KB-carbon anodes account for only 5.12% and 5.78% of the battery weight, respectively. We also found that only ~ 20% of the mesopore volume of the air electrode was occupied by reaction products after discharge. To further improve the specific energy of the Li/air batteries, the microstructure of the carbon electrode needs to be further improved to absorb much less electrolyte while still holding significant amounts of reaction products

  3. Tribological behavior of NiTi alloy against 52100 steel and WC at elevated temperatures

    SciTech Connect (OSTI)

    Abedini, M. [School of Metallurgy and Materials Engineering, University of Tehran, Tehran (Iran, Islamic Republic of); Ghasemi, H.M., E-mail: hghasemi@ut.ac.ir [School of Metallurgy and Materials Engineering, University of Tehran, Tehran (Iran, Islamic Republic of); Ahmadabadi, M. Nili [School of Metallurgy and Materials Engineering, University of Tehran, Tehran (Iran, Islamic Republic of)

    2010-07-15T23:59:59.000Z

    The dry tribological behavior of a Ti-50.3 at.% Ni alloy at temperatures of 25 deg. C, 50 deg. C and 200 deg. C was studied. The wear tests were performed on a high temperature pin-on-disk tribometer using 52100 steel and tungsten carbide pins. The worn surfaces of the NiTi alloy were examined by scanning electron microscope. The results showed that in the wear tests involving steel pins, the wear rate of the NiTi decreased as the wear testing temperature was increased. However, for the NiTi/WC contact, a reverse trend was observed. There was also a large decrease in the coefficient of friction for the NiTi/steel contact with increasing wear testing temperature. The formation of compact tribological layers could be the main reason for the reduction of the wear rate and coefficient of friction of the NiTi/steel contact at higher wear testing temperatures.

  4. COMPANHIA AMBIENTAL DO ESTADO DE SO PAULO ANEXO NICO

    E-Print Network [OSTI]

    Jardim, Wilson de Figueiredo

    DE IMPACTO AMBIENTAL (de que tratam, respectivamente, o § 3º do artigo 4º (RAP) e o § 1º do artigo 6º;Apresentação A Avaliação de Impacto Ambiental é uma ferramenta poderosa para antecipar e prevenir os efeitos realizada pelos técnicos dos órgãos ambientais. Nesse sentido, a Diretoria de Avaliação de Impacto Ambiental

  5. Influence of Temperature on the Corrosion of Uranium Dioxide Nuclear Fuel

    SciTech Connect (OSTI)

    Broczkowski, Michael E.; Noel, Jamie J.; Shoesmith, David W. [Chemistry, The University of Western Ontario, 1151 Richmond St., London, N6A 5B7 (Canada)

    2007-07-01T23:59:59.000Z

    The anodic dissolution of UO{sub 2} has been studied at 60 deg. C and the results compared to previous observations at 22 deg. C. The rate of oxidation / dissolution was determined electrochemically at constant potentials in the range -500 mV to 500 mV (vs. SCE). The composition of the electrochemically oxidized surface was determined by X-Ray Photoelectron Spectroscopy (XPS). The onset of oxidation (UO{sub 2} {yields} UO{sub 2+x}) occurred at approximately the same potential (-400 mV) at both temperatures. However, the conversion of U{sub V} to U{sub VI}, and hence to soluble UO{sub 2}{sup 2+}, was accelerated by temperature. This acceleration of dissolution caused the development of acidity at localized sites on the fuel surface at lower (less oxidizing) potentials ({>=} 100 mV) at 60 deg. C than at 22 deg. C ({>=} 350 mV)

  6. ambient ocean noise: Topics by E-print Network

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

    of anisotropy in oceanic ambient noise fields and its relevance to Acoustic Daylight imaging CiteSeer Summary: Acoustic Daylight is a new technique for creating pictorial...

  7. ambient igf leading: Topics by E-print Network

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

    system concept for the living assistance domain based on ambient intelligence technology and discuss the resulting challenges for the software engineering discipline....

  8. ambient seismic noise: Topics by E-print Network

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

    sources may Gerstoft, Peter 38 Testing Community Velocity Models for Southern California Using the Ambient Seismic Field Geosciences Websites Summary: to determine...

  9. ambient aerosol concentrations: Topics by E-print Network

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

    soluble in water: 2. Isolation of acid, neutral, and basic fractions by modified size Weber, Rodney 4 Ambient aerosol sampling using the Aerodyne Aerosol Mass Spectrometer...

  10. ambient fine aerosols: Topics by E-print Network

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

    soluble in water: 2. Isolation of acid, neutral, and basic fractions by modified size Weber, Rodney 4 Chemical characterization of the ambient organic aerosol soluble in water:...

  11. ambient water toxicity: Topics by E-print Network

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

    soluble in water: 2. Isolation of acid, neutral, and basic fractions by modified size Weber, Rodney 4 Censored Regression Trend Analyses for Ambient Water Quality Data...

  12. ambient ultrafine aerosols: Topics by E-print Network

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

    soluble in water: 2. Isolation of acid, neutral, and basic fractions by modified size Weber, Rodney 4 Ambient aerosol sampling using the Aerodyne Aerosol Mass Spectrometer...

  13. ambient air particles: Topics by E-print Network

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

    in AQM Carbon monoxide (CO) Sulfur dioxide (SO2) Nitrogen dioxide Weber, Rodney 5 Detectors for alpha particles and X-rays operating in ambient air in pulse...

  14. ambient air samples: Topics by E-print Network

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

    ambient air. A small amount of these nuclei mode particles contain solid ash from lube oil) South Coast Air Quality Management District California Air Resources Board Cummins...

  15. ambiental environmental scanning: Topics by E-print Network

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

    Environmental Sciences and Ecology Websites Summary: into the ambient air from uranium mill tailings disposal sites. Subpart T continues to apply to unlicensed uranium, Criteria...

  16. ambient air monitoring: Topics by E-print Network

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

    Piero Zappi, Elizabeth Bales, Jing Hong Simunic, Tajana 18 Economic and energetic analysis of capturing CO2 from ambient air Environmental Sciences and Ecology Websites...

  17. ambiental por compostos: Topics by E-print Network

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

    de cdigo aberto baseado (more) Adriano da Silva Ferreira; 2013-01-01 17 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  18. ambiente protegido sobre: Topics by E-print Network

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

    Introduo 18 Informaes gerais sobre o munic-pio de Nova 6 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  19. ambiente termoneutro dos: Topics by E-print Network

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

    dos resduos da (more) Guimares, Gustavo Costa 2007-01-01 10 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  20. ambiental dos estudios: Topics by E-print Network

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

    dos resduos da (more) Guimares, Gustavo Costa 2007-01-01 17 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  1. ambiental por centelleo: Topics by E-print Network

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

    de cdigo aberto baseado (more) Adriano da Silva Ferreira; 2013-01-01 8 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  2. ambientes internos hospitalares: Topics by E-print Network

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

    Universitrio de Nova Friburgo previnindo, educando e Souza, Max O. 18 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  3. ambiental institucionalizada actos: Topics by E-print Network

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

    2 Maestr-a en Ciencias de la Computacin 1 Vsquez, Carlos 19 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  4. ambiental causada por: Topics by E-print Network

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

    de cdigo aberto baseado (more) Adriano da Silva Ferreira; 2013-01-01 22 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  5. ambiental por vapores: Topics by E-print Network

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

    de cdigo aberto baseado (more) Adriano da Silva Ferreira; 2013-01-01 13 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  6. ambiental na costa: Topics by E-print Network

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

    CA 2 Contra Costa County, Martinez, CA WETLAND RESTORATION OPPORTUNITIES 25 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  7. ambientes globalizados um: Topics by E-print Network

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

    operando em Bateladas (more) Gomes, Luciano de Andrade 2008-01-01 13 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  8. ambiental por derramamento: Topics by E-print Network

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

    de cdigo aberto baseado (more) Adriano da Silva Ferreira; 2013-01-01 8 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  9. ambiental como herramienta: Topics by E-print Network

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

    el tejido inicialmente se form, por lo tanto permite Ehleringer, Jim 18 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  10. al medio ambiente: Topics by E-print Network

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

    Obras Pblicas, Madrid. RESUMEN Entre 2001 y 2003 Espigares, T-scar 30 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  11. ambiental dos recursos: Topics by E-print Network

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

    dos resduos da (more) Guimares, Gustavo Costa 2007-01-01 29 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  12. ambiental dos catadores: Topics by E-print Network

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

    dos resduos da (more) Guimares, Gustavo Costa 2007-01-01 11 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  13. ambiental por dimensiones: Topics by E-print Network

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

    de cdigo aberto baseado (more) Adriano da Silva Ferreira; 2013-01-01 15 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  14. ambiental integrada em: Topics by E-print Network

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

    de fluxo com (more) Silva, Janana da Conceio Braga 2012-01-01 36 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  15. ambiental por bacillus: Topics by E-print Network

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

    experiments indicated that Bacillus thuringiensis Selinger, Brent 12 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  16. ambiental del centro: Topics by E-print Network

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

    (Friends of the Clinical Center) Escuela infantil de Bandettini, Peter A. 2 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  17. ambiental das trilhas: Topics by E-print Network

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

    effektiv, (more) Nimmerrichter, Clemens Wolfgang 2010-01-01 8 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  18. ambiental das atividades: Topics by E-print Network

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

    DE SERGIPE E SUL DO ESTADO DO ALAGOAS. Open Access Theses and Dissertations Summary: ??O impacto ambiental causado por leo, esgotamento sanitrio, industrial,minerao,...

  19. acondicionamento ambiente sobre: Topics by E-print Network

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

    Introduo 18 Informaes gerais sobre o munic-pio de Nova 6 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  20. ambient dissolved metal: Topics by E-print Network

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

    These include corrosion and oxidation resistant coatings,1 preparation of materials by self-propagating- fusion can take place during deposition, under ambient con- ditions, and...

  1. Atmosphere as Culture: Ambient Media and Postindustrial Japan

    E-Print Network [OSTI]

    Roquet, Paul

    2012-01-01T23:59:59.000Z

    of publication (2008) as the “Electronica/Drone Era,” wheremusic follows the emergent Electronica scene out of the clublater marketed as ‘Electronica. ’ The ambient scene followed

  2. ambient pressure estimation: Topics by E-print Network

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

    localized orbitals may coexist with supercon- ductivity, the other being Am. In all rare earths Schilling, James 119 Nanoparticle manufacture ambient air chemical and ph...

  3. Temperature, Temperature, Earth, geotherm for

    E-Print Network [OSTI]

    Treiman, Allan H.

    Temperature, Temperature, Earth, geotherm for total global heat flow Venus, geotherm for total global heat flow, 500 Ma #12;Temperature, Temperature, #12;Earth's modern regional continental geotherms Venusian Geotherms, 500 Ma Temperature, Temperature, After Blatt, Tracy, and Owens Petrology #12;Ca2Mg5Si8

  4. Ambient-pressure silica aerogel films

    SciTech Connect (OSTI)

    Prakash, S.S. [New Mexico Univ., Albuquerque, NM (United States); Brinker, C.J. [New Mexico Univ., Albuquerque, NM (United States)]|[Sandia National Labs., Albuquerque, NM (United States); Hurd, A.J. [Sandia National Labs., Albuquerque, NM (United States)

    1994-12-31T23:59:59.000Z

    Very highly porous (aerogel) silica films with refractive index in the range 1.006--1.05 (equivalent porosity 98.5--88%) were prepared by an ambient-pressure process. It was shown earlier using in situ ellipsometric imaging that the high porosity of these films was mainly attributable to the dilation or `springback` of the film during the final stage of drying. This finding was irrefutably reconfirmed by visually observing a `springback` of >500% using environmental scanning electron microscopy (ESEM). Ellipsometry and ESEM also established the near cent per cent reversibility of aerogel film deformation during solvent intake and drying. Film thickness profile measurements (near the drying line) for the aerogel, xerogel and pure solvent cases are presented from imaging ellipsometry. The thickness of these films (crack-free) were controlled in the range 0.1-3.5 {mu}m independent of refractive index.

  5. Producing ground scrap tire rubber: A comparison between ambient and cryogenic technologies

    SciTech Connect (OSTI)

    Blumenthal, M.H. [Scrap Tire Management Council, Washington, DC (United States)

    1996-09-01T23:59:59.000Z

    Prior to 1985, few, if any scrap tires were processed. The Minnesota program changed all that. The equipment first introduced to process scrap tires consisted of redesigned wood or metal shredders. The performance of these systems left much to be desired. In the past 10 years, many companies and equipment systems, designed especially for scrap tires, have come into existence. Until recently, scrap tires were typically processed by ambient systems. These systems consist of a mechanical process, which cuts and or grinds whole tire rubber into the desired sized particle at room temperatures. Historically, producing ground rubber, like all other rubber processing, was done by an ambient processes system. Within the last several years, cryogenic processing of scrap tires has been introduced for the preparation of ground rubber. In the cryogenic process, rubber is introduced into a bath of liquid nitrogen, instantly freezing the rubber. Once embrittled, the rubber is struck with an impact devise, effectively shattering the rubber.

  6. Low temperature aqueous desulfurization of coal

    DOE Patents [OSTI]

    Slegeir, W.A.; Healy, F.E.; Sapienza, R.S.

    1985-04-18T23:59:59.000Z

    This invention describes a chemical process for desulfurizing coal, especially adaptable to the treatment of coal-water slurries, at temperatures as low as ambient, comprising treating the coal with aqueous titanous chloride whereby hydrogen sulfide is liberated and the desulfurized coal is separated with the conversion of titanous chloride to titanium oxides.

  7. Laser ablated copper plasmas in liquid and gas ambient

    SciTech Connect (OSTI)

    Kumar, Bhupesh; Thareja, Raj K. [Department of Physics, Indian Institute of Technology Kanpur, Kanpur 208 016 (India)] [Department of Physics, Indian Institute of Technology Kanpur, Kanpur 208 016 (India)

    2013-05-15T23:59:59.000Z

    The dynamics of copper ablated plasma plumes generated using laser ablation of copper targets in both liquid (de-ionized water) and gas (air) ambients is reported. Using time and space resolved visible emission spectroscopy (450-650 nm), the plasma plumes parameters are investigated. The electron density (n{sub e}) determined using Stark broadening of the Cu I (3d{sup 10}4d{sup 1} {sup 2}D{sub 3/2}-3d{sup 10}4p{sup 1} {sup 2}P{sub 3/2} at 521.8 nm) line is estimated and compared for both plasma plumes. The electron temperature (T{sub e}) was estimated using the relative line emission intensities of the neutral copper transitions. Field emission scanning electron microscopy and energy dispersive x-ray spectral analysis of the ablated copper surface indicated abundance of spherical nanoparticles in liquid while those in air are amalgamates of irregular shapes. The nanoparticles suspended in the confining liquid form aggregates and exhibit a surface plasmon resonance at ?590 nm.

  8. Ambient habitat noise and vibration at the Georgia Aquarium

    E-Print Network [OSTI]

    Johnson, Michael T.

    Ambient habitat noise and vibration at the Georgia Aquarium P. M. Scheifele Department significant levels of background noise due to pumps and motors. This noise, together with pool architecture to quantify the ambient noise levels in the water from machine vibration and from in-air performance speaker

  9. ambient air pollution: Topics by E-print Network

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

    ambient air pollution First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 ORIGINAL ARTICLE Ambient Air...

  10. High Temperature Capacitor Development

    SciTech Connect (OSTI)

    John Kosek

    2009-06-30T23:59:59.000Z

    The absence of high-temperature electronics is an obstacle to the development of untapped energy resources (deep oil, gas and geothermal). US natural gas consumption is projected to grow from 22 trillion cubic feet per year (tcf) in 1999 to 34 tcf in 2020. Cumulatively this is 607 tcf of consumption by 2020, while recoverable reserves using current technology are 177 tcf. A significant portion of this shortfall may be met by tapping deep gas reservoirs. Tapping these reservoirs represents a significant technical challenge. At these depths, temperatures and pressures are very high and may require penetrating very hard rock. Logistics of supporting 6.1 km (20,000 ft) drill strings and the drilling processes are complex and expensive. At these depths up to 50% of the total drilling cost may be in the last 10% of the well depth. Thus, as wells go deeper it is increasingly important that drillers are able to monitor conditions down-hole such as temperature, pressure, heading, etc. Commercial off-the-shelf electronics are not specified to meet these operating conditions. This is due to problems associated with all aspects of the electronics including the resistors and capacitors. With respect to capacitors, increasing temperature often significantly changes capacitance because of the strong temperature dependence of the dielectric constant. Higher temperatures also affect the equivalent series resistance (ESR). High-temperature capacitors usually have low capacitance values because of these dielectric effects and because packages are kept small to prevent mechanical breakage caused by thermal stresses. Electrolytic capacitors do not operate at temperatures above 150oC due to dielectric breakdown. The development of high-temperature capacitors to be used in a high-pressure high-temperature (HPHT) drilling environment was investigated. These capacitors were based on a previously developed high-voltage hybridized capacitor developed at Giner, Inc. in conjunction with a unique high-temperature electrolyte developed during the course of the program. During this program the feasibility of operating a high voltage hybridized capacitor at 230oC was demonstrated. Capacitor specifications were established in conjunction with potential capacitor users. A method to allow for capacitor operation at both ambient and elevated temperatures was demonstrated. The program was terminated prior to moving into Phase II due to a lack of cost-sharing funds.

  11. UNITN. PERIODICO DI INFORMAZIONE, POLITICA E CULTURA DELL'UNIVERSIT DEGLI STUDI DI TRENTO ANNO XI N 100 MAGGIO-GIUGNO 2008 SPED. IN ABB. POSTALE 70%

    E-Print Network [OSTI]

    1 UNITN. PERIODICO DI INFORMAZIONE, POLITICA E CULTURA DELL'UNIVERSITÃ? DEGLI STUDI DI TRENTO ANNO@unitn.it PERIODICO DI INFORMAZIONE, POLITICA E CULTURA DELL'UNIVERSITÃ? DEGLI STUDI DI TRENTO Intervista al rettore;2 UNITN. PERIODICO DI INFORMAZIONE, POLITICA E CULTURA DELL'UNIVERSITÃ? DEGLI STUDI DI TRENTO ANNO XI N

  12. Void evolution in polycarbonate at elevated temperatures

    SciTech Connect (OSTI)

    Chen, Y. H.; Li, C. L.; Lee, Sanboh [Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, Taiwan (China); Kuo Feng Chou [Department of Biomedical Engineering, Yuanpei University, Hsinchu, Taiwan (China)

    2011-08-15T23:59:59.000Z

    The void evolution in polycarbonate (PC) at elevated temperatures was investigated. Internal cylindrical cracks and voids were induced in PC by Nd-YAG laser irradiation. During the annealing at temperatures of 177-197 deg. C, the spherical void grows to a maximum size, which then decreases, and is finally leveling off. A model of void evolution based on the evaporation and condensation mechanisms for growth and shrinkage is proposed. The theoretical predictions are in good agreement with the experimental data. The activation energies of evaporation and condensation processes are determined to be 477.31 and 611.49 kJ/mol, respectively.

  13. ambiental pre-operacional da: Topics by E-print Network

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

    importante no ambiente (more) Pereira, Mariana de Oliveira 2012-01-01 18 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  14. ambient ph-regulated enzime: Topics by E-print Network

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

    conditions using ambient air quality data Mulholland, James A. 6 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  15. Temperature dependent metal-induced lateral crystallization of amorphous SiGe on insulating substrate

    SciTech Connect (OSTI)

    Kanno, Hiroshi; Toko, Kaoru; Sadoh, Taizoh; Miyao, Masanobu [Department of Electronics, Kyushu University, 744 Motooka, Fukuoka 819-0395 (Japan)

    2006-10-30T23:59:59.000Z

    Metal-induced lateral crystallization (MILC) of amorphous SiGe films on SiO{sub 2} has been investigated as a function of Ge fraction (0%-100%) and annealing temperature (320-550 deg. C). High temperature annealing (>500 deg. C) caused spontaneous nucleation in amorphous SiGe with a high Ge fraction (>70%). This suppressed the progress of MILC. Spontaneous nucleation was significantly suppressed by lowering the annealing temperature (<400 deg. C). As a result, large poly-SiGe regions (>20 {mu}m) were observed around Ni patterns even for high Ge fractions (>70%). In this way, MILC of amorphous SiGe was achieved for samples with whole Ge fractions (0%-100%)

  16. ambient light hikari: Topics by E-print Network

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

    is the light emitted by the object itself, such as the glow from a TV screen, a light-emitting diode, or a star. "Ambient" light is an illumination that seems to come from all...

  17. Ambient Lighting Interventions REDUCE Negative Behaviors by 83% &

    E-Print Network [OSTI]

    California at Davis, University of

    Ambient Lighting Interventions REDUCE Negative Behaviors by 83% & INCREASE Positive Behaviors by 90 & the structural organization & physiological actions of the brain. LIGHTING is known to influence production behaviors in patients with dementia & related disorders. Quality of light in interior environments

  18. ambiental territorio urbano: Topics by E-print Network

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

    el auge de la construc- cin de viviendas de inters social se produjera el menor impacto ambiental y social posible. De los terrenos se valor su ubicacin en el...

  19. ambiental del proceso: Topics by E-print Network

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

    12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  20. ambientes del ecosistema: Topics by E-print Network

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

    12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  1. ambiental del agua: Topics by E-print Network

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

    12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  2. ambiental del insecticida: Topics by E-print Network

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

    12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  3. ambiente una alternativa: Topics by E-print Network

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

    CEP 11.025-032 - So Paulo - Brasil Paris-Sud XI, Universit de 14 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  4. ambiente urbano ed: Topics by E-print Network

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

    el auge de la construc- cin de viviendas de inters social se produjera el menor impacto ambiental y social posible. De los terrenos se valor su ubicacin en el...

  5. ambiental proyecto central: Topics by E-print Network

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

    el auge de la construc- cin de viviendas de inters social se produjera el menor impacto ambiental y social posible. De los terrenos se valor su ubicacin en el...

  6. ambientes urbanos criterios: Topics by E-print Network

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

    el auge de la construc- cin de viviendas de inters social se produjera el menor impacto ambiental y social posible. De los terrenos se valor su ubicacin en el...

  7. ambiental da celula: Topics by E-print Network

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

    13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 21 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  8. ambiental del establecimiento: Topics by E-print Network

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

    12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  9. On the reliability of attenuation measurements from ambient noise crosscorrelations

    E-Print Network [OSTI]

    Johnson, Cari

    an earthquake in Nevada and a mining blast in Wyoming. We demonstrate that com- mon ambient noise data is needed to understand the effect of uneven noise source dis- tribution prior to estimation of local

  10. High Temperature, High Frequency Micro-Inductors for Low Power DC-DC Converters

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    due to self-heating or higher ambient temperature represents a risk for system operation components size depends on the switching frequency of the electrical waveforms. Sufficiently high switching

  11. Comparison of Ambient Radon Concentrations in Air in the Northern Mojave Desert from Continuous and Integrating Instruments

    SciTech Connect (OSTI)

    David S. Shafer; David McGraw; Lynn H. Karr; Greg McCurdy; Tammy L. Kluesner; Karen J. Gray; Jeffrey Tappen

    2010-05-18T23:59:59.000Z

    As part of a program to characterize and baseline environmental parameters, ambient radon-222 (Rn) monitoring was conducted in the rural community of Amargosa Valley, NV, the closest community to Yucca Mountain. Passive integrating and continuous Rn monitoring instruments were deployed adjacent to the Community Environmental Monitoring Program (CEMP) station in Amargosa Valley. The CEMP station provided real-time ambient gamma exposure and meteorological data used to correct the integrated Rn measurements, verified the meteorological data collected by the continuous Rn monitoring instrument, and for provided instrumentation for evaluating the relationships between meteorological conditions and Rn concentrations. Hourly Rn concentrations in air measured by the continuous Rn monitoring instrument (AlphaGUARD®) were compared to the average hourly values for the integrating Rn measurements (E-PERM®) by dividing the total Rn measurements by the number of hours the instruments were deployed. The results of the comparison indicated that average hourly ambient Rn concentrations as measured by both methods ranged from 0.2 to 0.4 pico-curies per liter of air. Ambient Rn values for the AlphaGUARD exhibited diurnal variations. When Rn concentrations were compared with measurements of temperature (T), barometric pressure, and relative humidity, the correlation (inversely) was highest with T, albeit weakly.

  12. IEEE BCTM5.1 Dependenceof ThermalResistanceon Ambientand Actual Temperature

    E-Print Network [OSTI]

    Technische Universiteit Delft

    resistance is inversely proportional to the thermal conductivity. This means that the temperature behaviour of the thermal resistance as function of power dissipation at constant ambient, but increasing device temperature increases the thermal resistance. The relation between temperature and power dissipation is then no longer

  13. CO{sub 2} Capture by Sub-ambient Membrane Operation

    SciTech Connect (OSTI)

    Kulkarni, S.; Hasse, D.; Sanders, E.; Chaubey, T.

    2012-11-30T23:59:59.000Z

    The main objective of the project was to develop a CO{sub 2} capture process based on sub-ambient temperature operation of a hollow fiber membrane. The program aims to reach the eventual DOE program goal of > 90% CO{sub 2} capture from existing PC fired power plants with < 35% increase in the cost of electricity. The project involves closed-loop testing of commercial fiber bundles under simulated process conditions to test the mechanical integrity and operability of membrane module structural component under sub ambient temperature. A commercial MEDAL 12” bundle exhibited excellent mechanical integrity for 2 months. However, selectivity was ~25% lower than expected at sub-ambient conditions. This could be attributed to a small feed to permeate leak or bundle non-ideality. To investigate further, and due to compressor flow limitations, the 12” bundle was replaced with a 6” bundle to conduct tests with lower permeate/feed ratios, as originally planned. The commercial 6” bundle was used for both parametric testing as well as long-term stability testing at sub-ambient conditions. Parametric studies were carried out both near the start and end of the long-term test. The parametric studies characterized membrane performance over a broad range of feed conditions: temperature (-25°C to -45°C), pressure (160 psig to 200 psig), and CO{sub 2} feed concentration (18% to 12%). Performance of the membrane bundle was markedly better at lower temperature (-45ºC), higher pressure (200 psig) and higher CO{sub 2} feed concentration (18%). The long-term test was conducted at these experimentally determined “optimum” feed conditions. Membrane performance was stable over 8 months at sub-ambient temperature operation. The experimentally measured high performance of the membrane bundle at sub-ambient operating conditions provides justification for interest in sub-ambient membrane processing of flue gas. In a parallel activity, the impact of contaminants (100 ppm SOx and NOx) on membrane performance was tested in the laboratory with membrane minipermeators. NO permeance is intermediate between CO{sub 2} and N{sub 2}; while both SO{sub 2} and NO{sub 2} are more permeable than CO{sub 2} at cold condition. This implies that SO{sub 2} and NO{sub 2} will be efficiently removed with CO{sub 2} into the membrane permeate in the proposed cold membrane process. Calculations were performed by Air Liquide Engineering (ALE) to estimate capture costs based on the proposed sub-ambient temperature membrane process for 90% CO{sub 2} capture from an air- fired coal power plant delivering 550 MW net electricity. Membrane performance in the process simulation was defined by the final parametric test results. This analysis involved refining the process simulation model, obtaining relevant capital cost estimates and using these to estimate a 20-year levelized cost of electricity (LCOE). A sensitivity analysis shows CO{sub 2} capture specific energy requirements of 216-242 kwh/T CO{sub 2} captured. The LCOE estimating methodology followed DOE/NETL study 2010/1397. This analysis indicates increases in LCOE between 48% and 53%. For most equipment, the budgetary capital cost estimates are expected to be valid within ± 20%. The most significant capital costs are due to the (i) feed compression and associated gas pretreatment and (ii) membrane system. For both items, there is a realistic chance for cost reductions in the immediate future (0-5 years) as well as long term reductions. The process continues to hold promise with anticipated cost reductions in compression and membrane operations. In particular, membrane costs could be reduced significantly by increased production volume (economy of scale) as well as optimization of bundle size and configuration for this application. PFD definition for a potential field test has been completed through (i) simulation work at DRTC, (ii) discussions with compressor manufacturers and (iii) a field visit to t e NCCC, Wilsonville, AL. The PC4 facility at the NCCC is a suitable site for a 0.1 MW scale test.

  14. Measurement of the Melting Point Temperature of Several Lithium-Sodium-Beryllium Fluoride Salt (Flinabe) Mixtures

    SciTech Connect (OSTI)

    McDonald, J.M; Nygren, R.E.; Lutz, T.J.; Tanaka, T.J; Ulrickson, M.A.; Boyle, T.J.; Troncosa, K.P. [Sandia National Laboratories (United States)

    2005-04-15T23:59:59.000Z

    The molten salt Flibe, a combination of lithium and beryllium fluorides studied for molten salt fission reactors, has been proposed as a breeder and coolant for fusion applications. The melting points of 2LiF-BeF{sub 2} and LiF-BeF{sub 2} are 460 deg. C and 363 deg. C, but LiF-BeF{sub 2} is rather viscous and has less lithium for breeding. In the Advanced Power Extraction (APEX) Program, concepts with a free flowing liquid for the first wall and blanket were investigated. Flinabe (a mixture of LiF, BeF{sub 2} and NaF) was selected for a molten salt design because a melting temperature below 350 deg. C appeared possible and this provided an attractive operating temperature window for a reactor. To confirm that a ternary salt with a low melting temperature existed, several combinations of the fluoride salts, LiF, NaF and BeF{sub 2}, were melted in a stainless steel crucible under vacuum. One had an apparent melting temperature of 305 deg. C. The test system, preparation of the mixtures, melting procedures and temperature curves for the melting and cooling are presented along with the apparent melting points. Thermal modeling of the salt pool and crucible is reported in an accompanying paper.

  15. Ambient Radon-222 Monitoring in Amargosa Valley, Nevada

    SciTech Connect (OSTI)

    L.H. Karr; J.J. Tappen; D. Shafer; K.J. Gray

    2008-06-05T23:59:59.000Z

    As part of a program to characterize and baseline selected environmental parameters in the region around the proposed repository at Yucca Mountain, Nevada, ambient radon-222 monitoring was conducted in the rural community of Amargosa Valley, the community closest to the proposed repository site. Passive integrating radon monitors and a continuous radon monitoring instrument were deployed adjacent to the Community Environmental Monitoring Program (CEMP) (http://www.cemp.dri.edu/index.html) station located in the Amargosa Valley Community Center near the library. The CEMP station provided real-time ambient gamma exposure and meteorological data used to correct the integrated radon measurements as well as verify meteorological data collected by the continuous radon monitoring instrument. Additionally, different types of environmental enclosures that housed the monitors and instrument were used to determine if particular designs influenced the ambient radon measurements.

  16. AMBIENT PM2.5 SAMPLING AND ANALYSIS

    SciTech Connect (OSTI)

    Unknown

    2000-10-01T23:59:59.000Z

    This report summarizes observations and tentative conclusions drawn from evaluations of the data captured to date from the operation of the ambient PM{sub 2.5} speciation sites in a geographical area encompassing southeastern Ohio, western Pennsylvania, and northwestern West Virginia. The overall goal of this program, called the Upper Ohio River Valley Project (UORVP), is to better understand the relationship between coal-based power system emissions and ambient air quality in the upper Ohio River Valley region through the collection of chemically resolved or speciated data.

  17. Sequential high temperature reduction, low temperature hydrolysis...

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

    high temperature reduction, low temperature hydrolysis for the regeneration of sulfated NOx trap catalysts. Sequential high temperature reduction, low temperature hydrolysis for...

  18. L'innovazione politica come articolazione di livelli di coinvolgimento degli abitanti: la riparazione del danno ambientale a Seveso.

    E-Print Network [OSTI]

    Boyer, Edmond

    1 L'innovazione politica come articolazione di livelli di coinvolgimento degli abitanti: la opportunità di innovazione politica (Crozier e Friedberg, 1977; Krapohl, 2007). L'etimologia di crisi rimanda politica, e in particolare di innovazione istituzionale, a livello locale. L'innovazione politica può

  19. 1 UNIVERSITA DEGLI STUDI DI MILANO 1m~~sTc.mr;P~;ILWNAI,E

    E-Print Network [OSTI]

    De Cindio, Fiorella

    1 UNIVERSITA DEGLI STUDI DI MILANO 1m~~sTc.mr;P~;ILWNAI,E A TUTTO IL P E R S O W DKENTE E che precedei1collocamento a riposo (in sede di primaapplicazione la domanda poteva essere.4.2009 prot. 13712, deve essere in grado di assicurare la natura e le caratteristiche del contratto e i1

  20. Classical Helium Atom with Radiation Reaction Universit`a degli Studi di Milano, Corso di Laurea in Fisica,

    E-Print Network [OSTI]

    Galgani, Luigi

    Classical Helium Atom with Radiation Reaction G. Camelio Universit`a degli Studi di Milano, Corso: November 24, 2011) Abstract We study a classical model of Helium atom in which, in addition to the Coulomb (see for example Refs. 1­8), in this paper we take into account, for the case of the Helium atom

  1. Wet Chemical Synthesis of Silver Nanowire Thin Films at Ambient Temperature

    E-Print Network [OSTI]

    Qi, Limin

    received much attention because bulk silver exhibits the highest electrical and thermal conductivity among polycarbonate4 and alumina5 membranes, and mesoporous silica,6 and "soft tem- plates", such as DNA chains,7

  2. Volume 9, Article 7 The Ambient Temperature Effect on Current-Voltage

    E-Print Network [OSTI]

    with strong self-heating effects in high-power GaN transistors may result in significant performance

  3. ambient-temperature passive magnetic: Topics by E-print Network

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

    energy and nitrogen balance. The amounts of alfalfa eaten and the levels of nitrogen. Daylight ratio effect is evident in one case : long daily daylight increases the proportion of...

  4. Li corrosion resistant glasses for headers in ambient temperature Li batteries

    DOE Patents [OSTI]

    Hellstrom, E.E.; Watkins, R.D.

    1985-10-11T23:59:59.000Z

    Glass compositions containing 10 to 50 mol% CaO, 10 to 50 mol% Al/sub 2/O/sub 3/, 30 to 60 mol% B/sub 2/O/sub 3/, and 0 to 30 mol% MgO are provided. These compositions are capable of forming a stable glass-to-metal seal possessing electrical insulating properties for use in a lithium battery. Also provided are lithium cells containing a stainless steel body and molybdenum center pin electrically insulated by means of a seal produced according to the invention.

  5. Photoelectrochemical carbon dioxide reduction to hydrocarbons at ambient temperature and pressure

    SciTech Connect (OSTI)

    Cook, R.L.; MacDuff, R.C.; Sammells, A.F.

    1988-12-01T23:59:59.000Z

    The identification of photoinduced CO/sub 2/ reduction pathways leading to gaseous hydrocarbon species would be an attractive strategy for producing gaseous fuels from this inorganic substrate molecule. Of the dispersed semiconductor suspensions, n-SrTiO/sub 3/ has appeared to be the most active photocatalyst with adsorbed energy conversion efficiencies of approx. =6% being reported. Furthermore, both CO/sub 2/ and HCHO have been shown photoreduced to CH/sub 4/ in the presence of illuminated n-SrTiO/sub 3/ suspensions. On dispersed illuminated SiC both CO and CO/sub 2/ have been shown reducible to hydrocarbon products. Reduction of CO/sub 2/ on illuminated SiC particles leads to HCOOH, HCHO, CH/sub 3/OH, and EtOH formation whereas CO reduction has been shown to give CH/sub 4/, C/sub 2/H/sub 4/, C/sub 3/H/sub 6/, and C/sub 3/H/sub 8//sup 6/ as reaction products with no alcohols being observed. In recent years copper has been shown to be the most active electrocatalyst for the electrochemical reduction of CO/sub 2/ or CO in aqueous KHCO/sub 3/. Major reduction products were found to be CH/sub 4/ and C/sub 2/H/sub 4/ with minor products being HCOOH and HCHO. Furthermore, the authors have recently found that formaldehyde can be reduced in aqueous electrolyte to give methane. For in situ electrochemically deposited copper electrodes, cumulative CO/sub 2/ reduction to CH/sub 4/ and C/sub 2/H/sub 4/, at current densities of 8 mA/cm/sup 2/ was found to be nearly faradaic. Reported here is the photoelectrochemical (PEC) reduction of CO/sub 2/ to CH/sub 4/, C/sub 2/H/sub 4/, and C/sub 2/H/sub 6/ using illuminated suspensions of p-SiC and Cu particles to CO/sub 2/-saturated potassium bicarbonate.

  6. Oxygen Pathways and Carbon Dioxide Utilization in Methane Partial Oxidation in Ambient Temperature

    E-Print Network [OSTI]

    Mallinson, Richard

    - ronmental impact. Present technology uses steam reforming to produce synthesis gas which is converted into enhance- ment of the carbon balance of methane conversion by reforming with CO2 in order to "recycle

  7. Fundamental Understanding of Ambient and High-Temperature Plasticity Phenomena in Structural Materials in Advanced Reactors

    SciTech Connect (OSTI)

    Deo, Chaitanya; Zhu, Ting; McDowell, David

    2013-11-17T23:59:59.000Z

    The goal of this research project is to develop the methods and tools necessary to link unit processes analyzed using atomistic simulations involving interaction of vacancies and interstitials with dislocations, as well as dislocation mediation at sessile junctions and interfaces as affected by radiation, with cooperative influence on higher-length scale behavior of polycrystals. These tools and methods are necessary to design and enhance radiation-induced damage-tolerant alloys. The project will achieve this goal by applying atomistic simulations to characterize unit processes of: 1. Dislocation nucleation, absorption, and desorption at interfaces 2. Vacancy production, radiation-induced segregation of substitutional Cr at defect clusters (point defect sinks) in BCC Fe-Cr ferritic/martensitic steels 3. Investigation of interaction of interstitials and vacancies with impurities (V, Nb, Ta, Mo, W, Al, Si, P, S) 4. Time evolution of swelling (cluster growth) phenomena of irradiated materials 5. Energetics and kinetics of dislocation bypass of defects formed by interstitial clustering and formation of prismatic loops, informing statistical models of continuum character with regard to processes of dislocation glide, vacancy agglomeration and swelling, climb and cross slip This project will consider the Fe, Fe-C, and Fe-Cr ferritic/martensitic material system, accounting for magnetism by choosing appropriate interatomic potentials and validating with first principles calculations. For these alloys, the rate of swelling and creep enhancement is considerably lower than that of face-centered cubic (FCC) alloys and of austenitic Fe-Cr-Mo alloys. The team will confirm mechanisms, validate simulations at various time and length scales, and improve the veracity of computational models. The proposed research?s feasibility is supported by recent modeling of radiation effects in metals and alloys, interfacial dislocation transfer reactions in nano-twinned copper, and dislocation reactions at general boundaries, along with extensive modeling cooperative effects of dislocation interactions and migration in crystals and polycrystals using continuum models.

  8. Ris Energy Report 3 Hydrogen is a gas at ambient temperatures and pressures,

    E-Print Network [OSTI]

    be stored as a gas, a liquid or a solid. In the case of solid storage, the hydrogen exists as a chemical. Compared to fossil fuels such as gasoline, hydrogen has a very obvious shortfall in the amount of energy.5% hydrogen by weight or 62 kg H2/m3 and several storage techniques are able to meet these requirements

  9. Effects of Ambient Density and Temperature on Soot Formation under High-EGR

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny:RevisedAdvisory Board ContributionsreductionRefineries |

  10. Morphology and Optical Properties of Mg Doped GaNNanowires in Dependence of Growth Temperature

    SciTech Connect (OSTI)

    Sutter, E.

    2010-06-17T23:59:59.000Z

    The influence of the substrate temperature and Mg doping on the morphological and optical properties of catalyst-free GaN nanowires grown by plasma-assisted molecular beam epitaxy on Si(111) has been investigated in a large temperaturerange between 665 &deg;C and 785 &deg;C. The density and wire sizes in Mg-doped nanowires are found to change with substrate temperature in a similar way as undoped nanowires. Between 725 &deg;C and 785 &deg;C a trimodal size distribution and an increase of the wire density from 5.0x109 cm-2 to 9.5x109 cm-2 were observed. Transmission electron microscopy indicates that the upper parts of the nanowires are free of structural defects. Raman spectroscopy measurements confirm a high crystalline quality of doped wires, with a line width of the E2 H of 3.3 cm-1 for samples grown at Ts=785 &deg;C. Photoluminescence measurements show a strong influence of Mg on the emission properties, namely the increase of thedonor-acceptor pair emission and its phonon replicas.

  11. A novel method to low temperature synthesis of nanocrystalline forsterite

    SciTech Connect (OSTI)

    Saberi, Ali [Department of Material Science and Engineering, Faculty of Mechanical Engineering, University of Tabriz, Tabriz 51666-16471 (Iran, Islamic Republic of); Alinejad, Babak [Department of Material Science and Engineering, Iran University of Science and Technology, Narmak, Tehran 16846-13114 (Iran, Islamic Republic of); Negahdari, Zahra [Faculty of Applied Science, Chair of Material Processing, 95440 Bayreuth, Bavaria (Germany)]. E-mail: Zahra.negahdari@uni-bayreuth.de; Kazemi, Faramarz [Department of Material Science and Engineering, Iran University of Science and Technology, Narmak, Tehran 16846-13114 (Iran, Islamic Republic of); Almasi, Ali [Department of Material Science and Engineering, Faculty of Mechanical Engineering, University of Tabriz, Tabriz 51666-16471 (Iran, Islamic Republic of)

    2007-04-12T23:59:59.000Z

    Nanocrystalline forsterite (Mg{sub 2}SiO{sub 4}) powder was synthesized using sucrose as a chelating agent and template material from an aqueous solution of magnesium nitrate and colloidal silica. The synthesized powders were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), simultaneous thermal analysis (STA), and scanning electron microscopy (SEM). The synthesized nano-powder had particle size smaller than 200 nm and average crystallite size of powders calcined at 800 deg. C for 3 h was in the range of 10-30 nm. Also the effect of addition 2 and 4 wt.% forsterite seed on nucleation temperature and crystallite size of forsterite was investigated. The presence of small amounts of Mg{sub 2}SiO{sub 4} as seed obviously accelerated the crystallization of forsterite. According to DTA results the inceptive formation temperature of Mg{sub 2}SiO{sub 4} without any seed was 760 deg. C, while this temperature for the specimen containing 4 wt.% seed was 700 deg. C.

  12. High-temperature directional drilling turbodrill

    SciTech Connect (OSTI)

    Neudecker, J.W.; Rowley, J.C.

    1982-02-01T23:59:59.000Z

    The development of a high-temperature turbodrill for directional drilling of geothermal wells in hard formations is summarized. The turbodrill may be used for straight-hole drilling but was especially designed for directional drilling. The turbodrill was tested on a dynamometer stand, evaluated in laboratory drilling into ambient temperature granite blocks, and used in the field to directionally drill a 12-1/4-in.-diam geothermal well in hot 200/sup 0/C (400/sup 0/F) granite at depths to 10,5000 ft.

  13. ambient vibration test: Topics by E-print Network

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

    vibration test First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Ambient Vibration Tests and Modal...

  14. Guia para a Avaliao do Risco Ambiental de Organismos

    E-Print Network [OSTI]

    Parrott, Wayne

    Paulo - ILSI Brasil 2012 #12;#12;Guia para a Avaliação do Risco Ambiental de Organismos Geneticamente Modificados #12;APOIO: © 2012 ILSI Brasil - International Life Sciences Institute do Brasil ILSI BRASIL INTERNATIONAL LIFE SCIENCES INSTITUTE DO BRASIL Rua Hungria, 664 - conj.113 01455-904 - São Paulo - SP - Brasil

  15. Subsurface Ambient Thermoelectric Power for Moles and Penetrators1

    E-Print Network [OSTI]

    Lorenz, Ralph D.

    1 Subsurface Ambient Thermoelectric Power for Moles and Penetrators1 Ralph D. Lorenz, Lunar for electrical power generation for planetary exploration applications using thermoelectric conversion of the vehicle. Proof-of-concept experiments are described using off-the-shelf thermoelectric CPU cooling plates

  16. Gua para la Evaluacin de Riesgo Ambiental de Organismos

    E-Print Network [OSTI]

    Parrott, Wayne

    Mercedes Roca Profesora Asociada de Biotecnología, Departamento de Ambiente y Desarrollo, Universidad Gestión de la Innovación del Centro de Ciencias Aplicadas y Desarrollo Tecnológico de la Universidad #12;5 Marcia Almeida de Melo Profesora del Centro de Salud y Tecnología Rural, Universidad Federal de

  17. Detecting the ambient neutralino dark matter particles at accelerator

    E-Print Network [OSTI]

    Tai-Fu Feng; Xue-Qian Li; Wen-Gan Ma; Jian-Xiong Wang; Gong-Bo Zhao

    2006-10-30T23:59:59.000Z

    In this work, we present a new strategy to investigate the possibility of direct detection of the ambient neutralino matter at accelerator. We calculate the cross sections for both elastic and inelastic scattering processes of the dark matter particles with the beam particles at $e^+e^-$ and hadron colliders.

  18. Brady 1D seismic velocity model ambient noise prelim

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

    Mellors, Robert J.

    Preliminary 1D seismic velocity model derived from ambient noise correlation. 28 Green's functions filtered between 4-10 Hz for Vp, Vs, and Qs were calculated. 1D model estimated for each path. The final model is a median of the individual models. Resolution is best for the top 1 km. Poorly constrained with increasing depth.

  19. Brady 1D seismic velocity model ambient noise prelim

    SciTech Connect (OSTI)

    Mellors, Robert J.

    2013-10-25T23:59:59.000Z

    Preliminary 1D seismic velocity model derived from ambient noise correlation. 28 Green's functions filtered between 4-10 Hz for Vp, Vs, and Qs were calculated. 1D model estimated for each path. The final model is a median of the individual models. Resolution is best for the top 1 km. Poorly constrained with increasing depth.

  20. ambient air pollution comparison: Topics by E-print Network

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

    ambient air pollution comparison First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 ORIGINAL ARTICLE...

  1. ambiente web para: Topics by E-print Network

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

    ambiente web para First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Arquitetura para distribuio de...

  2. Emission dynamics of an expanding ultrafast-laser produced Zn plasma under different ambient pressures

    SciTech Connect (OSTI)

    Smijesh, N.; Philip, Reji [Raman Research Institute, C.V. Raman Avenue, Sadashivanagar, Bangalore 560080 (India)] [Raman Research Institute, C.V. Raman Avenue, Sadashivanagar, Bangalore 560080 (India)

    2013-09-07T23:59:59.000Z

    We report time and space resolved spectral measurements of neutral Zn emission from an ultrafast laser produced plasma, generated by the irradiation of a Zn target with laser pulses of 100 femtoseconds duration, carried out in a broad ambient pressure range of 0.05 to 100 Torr. The measurement is done for three different axial positions in the expanding plume. The spectra are rich in neutral Zn (Zn I) emissions at 334.5 nm, 468 nm, 472 nm, 481 nm, and 636 nm, respectively, depicting the characteristic triplet structure of Zn. Fast as well as slow peaks are observed in the time of flight data of 481 nm emission, which arise from recombination and atomic contributions, respectively, occurring at different time scales. Average speeds of the fast atomic species do not change appreciably with ambient pressure. The plasma parameters (electron temperature and number density) are evaluated from the measured optical emission spectra. The rates of ionization and recombination can be enhanced by a double-pulse excitation configuration in which optical energy is coupled to the ultrafast plasma through a delayed laser pulse.

  3. Effects of High Nighttime Temperature and Role of Plant Growth Regulators on Growth, Development and Physiology of Rice Plants

    E-Print Network [OSTI]

    Mohammed, Abdul R.

    2010-07-14T23:59:59.000Z

    to HNT (32 degrees C) or ambient nighttime temperature (ANT) (27 degrees C) starting from 2000 h until 0600 h, and with or without plant growth regulator treatments. The plant growth regulator treatments included alpha-tocopherol (vitamin E), glycine...

  4. Surface heating effect on local heat transfer in a rotating two-pass square channel with 60 deg angled rib turbulators

    SciTech Connect (OSTI)

    Zhang, Y.M.; Han, J.C.; Parsons, J.A. [Texas A and M Univ., College Station, TX (United States); Lee, C.P. [General Electric Co., Cincinnati, OH (United States)

    1995-04-01T23:59:59.000Z

    The influence of uneven wall temperature on the local heat transfer coefficient in a rotating, two-pass, square channel with 60 deg ribs on the leading and trailing walls was investigated for Reynolds number from 2,500 to 25,000 and rotation numbers from 0 to 0.352. Each pass, composed of six isolated copper sections, had a length-to-hydraulic diameter ratio of 12. The mean rotating radius-to-hydraulic diameter ratio was 30. Three thermal boundary condition cases were studied: (A) all four walls at the same temperature, (B) all four walls at the same heat flux, and (C) trailing wall hotter than leading with side walls unheated and insulated. Results indicate that rotating ribbed wall heat transfer coefficients increase by a factor of 2 to 3 over the rotating smooth wall data and at reduced coefficient variation from inlet to exit. As rotation number (or buoyancy parameter) increases, the first pass (outflow) trailing heat transfer coefficients increase and the first pass leading heat transfer coefficients decrease, whereas the reverse is true for the second pass (inflow). The direction of the Coriolis force reverse from the outflow trailing wall to the inflow leading wall. Differences between the first pass leading and trailing heat transfer coefficients increase with rotation number. A similar behavior is seen for the second pass leading and trailing heat transfer coefficients, but the differences are reduced due to buoyancy changing from aiding to opposing the inertia force. The results suggest that uneven wall temperature has a significant impact on the local heat transfer coefficients. The heat transfer coefficients on the first pass leading wall for cases B and C are up to 70--100% higher than that for case A, while the heat transfer coefficients on the second pass trailing wall for cases B and C are up to 20--50% higher.

  5. Variable temperature seat climate control system

    DOE Patents [OSTI]

    Karunasiri, Tissa R. (Van Nuys, CA); Gallup, David F. (Pasadena, CA); Noles, David R. (Glendale, CA); Gregory, Christian T. (Alhambra, CA)

    1997-05-06T23:59:59.000Z

    A temperature climate control system comprises a variable temperature seat, at least one heat pump, at least one heat pump temperature sensor, and a controller. Each heat pump comprises a number of Peltier thermoelectric modules for temperature conditioning the air in a main heat exchanger and a main exchanger fan for passing the conditioned air from the main exchanger to the variable temperature seat. The Peltier modules and each main fan may be manually adjusted via a control switch or a control signal. Additionally, the temperature climate control system may comprise a number of additional temperature sensors to monitor the temperature of the ambient air surrounding the occupant as well as the temperature of the conditioned air directed to the occupant. The controller is configured to automatically regulate the operation of the Peltier modules and/or each main fan according to a temperature climate control logic designed both to maximize occupant comfort during normal operation, and minimize possible equipment damage, occupant discomfort, or occupant injury in the event of a heat pump malfunction.

  6. Low temperature joining of ceramic composites

    DOE Patents [OSTI]

    Barton, Thomas J. (Ames, IA); Anderson, Iver E. (Ames, IA); Ijadi-Maghsoodi, Sina (Ames, IA); Nosrati, Mohammad (Ames, IA); Unal, Ozer (Ames, IA)

    2001-04-10T23:59:59.000Z

    A method of joining similar or dissimilar ceramic and ceramic composite materials, such as SiC continuous fiber ceramic composites, at relatively low joining temperatures uses a solventless, three component bonding agent effective to promote mechanical bond toughness and elevated temperature strength to operating temperatures of approximately 1200 degrees C. The bonding agent comprises a preceramic precursor, an aluminum bearing powder, such as aluminum alloy powder, and mixtures of aluminum metal or alloy powders with another powder, and and boron powder in selected proportions. The bonding agent is disposed as an interlayer between similar or dissimilar ceramic or cermaic composite materials to be joined and is heated in ambient air or inert atmosphere to a temperature not exceeding about 1200 degrees C. to form a strong and tough bond joint between the materials. The bond joint produced is characterized by a composite joint microstructure having relatively soft, compliant aluminum bearing particulate regions dispersed in a ceramic matrix.

  7. Low temperature joining of ceramic composites

    DOE Patents [OSTI]

    Barton, T.J.; Anderson, I.E.; Ijadi-Maghsoodi, S.; Nosrati, M.; Unal, O.

    1999-01-12T23:59:59.000Z

    A method of joining similar or dissimilar ceramic and ceramic composite materials, such as SiC continuous fiber ceramic composites, at relatively low joining temperatures uses a solventless, three component bonding agent effective to promote mechanical bond toughness and elevated temperature strength to operating temperatures of approximately 1200 degrees C. The bonding agent comprises a preceramic precursor, an aluminum bearing powder, such as aluminum alloy powder, and mixtures of aluminum metal or alloy powders with another powder, and boron powder in selected proportions. The bonding agent is disposed as an interlayer between similar or dissimilar ceramic or ceramic composite materials to be joined and is heated in ambient air or inert atmosphere to a temperature not exceeding about 1200 degrees C. to form a strong and tough bond joint between the materials. The bond joint produced is characterized by a composite joint microstructure having relatively soft, compliant aluminum bearing particulate regions dispersed in a ceramic matrix. 3 figs.

  8. Low temperature joining of ceramic composites

    DOE Patents [OSTI]

    Barton, Thomas J. (Ames, IA); Anderson, Iver E. (Ames, IA); Ijadi-Maghsoodi, Sina (Ames, IA); Nosrati, Mohammad (Ames, IA); Unal, Ozer (Ames, IA)

    1999-07-13T23:59:59.000Z

    A method of joining similar or dissimilar ceramic and ceramic composite materials, such as SiC continuous fiber ceramic composites, at relatively low joining temperatures uses a solventless, three component bonding agent effective to promote mechanical bond toughness and elevated temperature strength to operating temperatures of approximately 1200 degrees C. The bonding agent comprises a preceramic precursor, an aluminum bearing powder, such as aluminum alloy powder, and mixtures of aluminum metal or alloy powders with another powder, and and boron powder in selected proportions. The bonding agent is disposed as an interlayer between similar or dissimilar ceramic or ceramic composite materials to be joined and is heated in ambient air or inert atmosphere to a temperature not exceeding about 1200 degrees C. to form a strong and tough bond joint between the materials. The bond joint produced is characterized by a composite joint microstructure having relatively soft, compliant aluminum bearing particulate regions dispersed in a ceramic matrix.

  9. Low temperature joining of ceramic composites

    DOE Patents [OSTI]

    Barton, Thomas J. (Ames, IA); Anderson, Iver E. (Ames, IA); Ijadi-Maghsoodi, Sina (Ames, IA); Nosrati, Mohammad (Ames, IA); Unal, Ozer (Ames, IA)

    1999-01-12T23:59:59.000Z

    A method of joining similar or dissimilar ceramic and ceramic composite materials, such as SiC continuous fiber ceramic composites, at relatively low joining temperatures uses a solventless, three component bonding agent effective to promote mechanical bond toughness and elevated temperature strength to operating temperatures of approximately 1200 degrees C. The bonding agent comprises a preceramic precursor, an aluminum bearing powder, such as aluminum alloy powder, and mixtures of aluminum metal or alloy powders with another powder, and and boron powder in selected proportions. The bonding agent is disposed as an interlayer between similar or dissimilar ceramic or cermaic composite materials to be joined and is heated in ambient air or inert atmosphere to a temperature not exceeding about 1200 degrees C. to form a strong and tough bond joint between the materials. The bond joint produced is characterized by a composite joint microstructure having relatively soft, compliant aluminum bearing particulate regions dispersed in a ceramic matrix.

  10. Low temperature joining of ceramic composites

    DOE Patents [OSTI]

    Barton, T.J.; Anderson, I.E.; Ijadi-Maghsoodi, S.; Nosrati, M.; Unal, O.

    1999-07-13T23:59:59.000Z

    A method of joining similar or dissimilar ceramic and ceramic composite materials, such as SiC continuous fiber ceramic composites, at relatively low joining temperatures uses a solventless, three component bonding agent effective to promote mechanical bond toughness and elevated temperature strength to operating temperatures of approximately 1200 C. The bonding agent comprises a preceramic precursor, an aluminum bearing powder, such as aluminum alloy powder, and mixtures of aluminum metal or alloy powders with another powder, and boron powder in selected proportions. The bonding agent is disposed as an interlayer between similar or dissimilar ceramic or ceramic composite materials to be joined and is heated in ambient air or inert atmosphere to a temperature not exceeding about 1200 C to form a strong and tough bond joint between the materials. The bond joint produced is characterized by a composite joint microstructure having relatively soft, compliant aluminum bearing particulate regions dispersed in a ceramic matrix. 3 figs.

  11. Real-time detection of ambient aerosols using photothermal interferometry: Folded Jamin interferometer

    E-Print Network [OSTI]

    Real-time detection of ambient aerosols using photothermal interferometry: Folded Jamin of instrumentation that can directly measure ambient aerosol absorption through photothermal interferometry. The hallmark of this approach is its ability to directly measure aerosol absorption without interference from

  12. Reflecting the Revised PM 2.5 National Ambient Air Quality Standard...

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

    Reflecting the Revised PM 2.5 National Ambient Air Quality Standard in NEPA Evaluations Reflecting the Revised PM 2.5 National Ambient Air Quality Standard in NEPA Evaluations This...

  13. ambient particle-bound pollution: Topics by E-print Network

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

    16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 ORIGINAL ARTICLE Ambient Air Pollution Engineering Websites Summary: ORIGINAL ARTICLE Ambient Air Pollution and...

  14. ambient air quality-a: Topics by E-print Network

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

    16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 ORIGINAL ARTICLE Ambient Air Pollution Engineering Websites Summary: ORIGINAL ARTICLE Ambient Air Pollution and...

  15. Cardiopulmonary Toxicity Induced by Ambient Particulate Matter (BI City Concentrated Ambient Particle Study)

    SciTech Connect (OSTI)

    Annette Rohr; James Wagner Masako Morishita; Gerald Keeler; Jack Harkema

    2010-06-30T23:59:59.000Z

    Alterations in heart rate variability (HRV) have been reported in rodents exposed to concentrated ambient particles (CAPs) from different regions of the United States. The goal of this study was to compare alterations in cardiac function induced by CAPs in two distinct regional atmospheres. AirCARE 1, a mobile laboratory with an EPA/Harvard fine particle (particulate matter <2.5 {micro}m; PM{sub 2.5}) concentrator was located in urban Detroit, MI, where the PM mixture is heavily influenced by motor vehicles, and in Steubenville, OH, where PM is derived primarily from long-range transport and transformation of power plant emissions, as well as from local industrial operations. Each city was studied during both winter and summer months, for a total of four sampling periods. Spontaneously hypertensive rats instrumented for electrocardiogram (ECG) telemetry were exposed to CAPs 8 h/day for 13 consecutive days during each sampling period. Heart rate (HR), and indices of HRV (standard deviation of the average normal-to-normal intervals [SDNN]; square root of the mean squared difference of successive normal-to-normal intervals [rMSSD]), were calculated for 30-minute intervals during exposures. A large suite of PM components, including nitrate, sulfate, elemental and organic carbon, and trace elements, were monitored in CAPs and ambient air. In addition, a unique sampler, the Semi-Continuous Elements in Air Sampler (SEAS) was employed to obtain every-30-minute measurements of trace elements. Positive matrix factorization (PMF) methods were applied to estimate source contributions to PM{sub 2.5}. Mixed modeling techniques were employed to determine associations between pollutants/CAPs components and HR and HRV metrics. Mean CAPs concentrations in Detroit were 518 and 357 {micro}g/m{sup 3} (summer and winter, respectively) and 487 and 252 {micro}g/m{sup 3} in Steubenville. In Detroit, significant reductions in SDNN were observed in the summer in association with cement/lime, iron/steel, and gasoline/diesel factors, while associations with the sludge incineration factor and components were less consistent. In winter, increases in HR were associated with a refinery factor and its components. CAPs-associated HR decreases in winter were linked to sludge incineration, cement/lime, and coal/secondary factors and the majority of their associated components. Specific relationships for increased rMSSD in winter were difficult to determine due to lack of consistency between factors and associated constituents. In Steubenville, we observed significant changes in HR (both increases and decreases), SDNN, and rMSSD in the summer, but not in the winter. We examined associations between individual source factors/PM components and HRV metrics segregated by predominant wind direction (NE or SW). Changes in HR (both increases and decreases) were linked with metal processing, waste incineration, and iron/steel factors along with most of their associated elemental constituents. Reductions in SDNN were associated with metal processing, waste incineration, and mobile source factors and the majority of elements loading onto these factors. There were no consistent associations between changes in rMSSD and source factors/components. Despite the large number of coal-fired power plants in the region, and therefore the large contribution of secondary sulfate to overall PM mass, we did not observe any associations with the coal/secondary factor or with the majority of its associated components. There were several inconsistencies in our results which make definitive conclusions difficult. For example, we observed opposing signs of effect estimates with some components depending on season, and with others depending on wind direction. In addition, our extensive dataset clearly would be subject to issues of multiple comparisons, and the 'true' significant results are unknown. Overall, however, our results suggest that acute changes in cardiac function were most strongly associated with local industrial sources. Results for coal-fired power plant-derived PM were

  16. A High-Temperature Folded-Cascode Operational Transconductance Amplifier in 0.8-m BCD-on-SOI

    E-Print Network [OSTI]

    Tolbert, Leon M.

    A High-Temperature Folded-Cascode Operational Transconductance Amplifier in 0.8-µm BCD-on-SOI C. Su electric vehicles (HEVs) has been driving the demand of high temperature automotive electronics target for the engine compartment, power train, and brakes where the ambient temperature normally exceeds 150°C

  17. Photoacoustic optical properties at UV, VIS, and near IR wavelengths for laboratory generated and winter time ambient urban aerosols

    SciTech Connect (OSTI)

    Gyawali, Madhu S.; Arnott, W. Patrick; Zaveri, Rahul A.; Song, Chen; Moosmuller, H.; Liu, Li; Mishchenko, M.; Chen, L-W A.; Green, M.; Watson, J. G.; Chow, J. C.

    2012-03-08T23:59:59.000Z

    We present the laboratory and ambient photoacoustic (PA) measurement of aerosol light absorption coefficients at ultraviolet wavelength (i.e., 355 nm) and compare with measurements at 405, 532, 870, and 1047 nm. Simultaneous measurements of aerosol light scattering coefficients were achieved by the integrating reciprocal nephelometer within the PA's acoustic resonator. Absorption and scattering measurements were carried out for various laboratory generated aerosols, including salt, incense, and kerosene soot to evaluate the instrument calibration and gain insight on the spectral dependence of aerosol light absorption and scattering. Ambient measurements were obtained in Reno, Nevada, between 18 December 2009 and 18 January 2010. The measurement period included days with and without strong ground level temperature inversions, corresponding to highly polluted (freshly emitted aerosols) and relatively clean (aged aerosols) conditions. Particulate matter (PM) concentrations were measured and analyzed with other tracers of traffic emissions. The temperature inversion episodes caused very high concentration of PM{sub 2.5} and PM{sub 10} (particulate matter with aerodynamic diameters less than 2.5 {mu}m and 10 {mu}m, respectively) and gaseous pollutants: carbon monoxide (CO), nitric oxide (NO), and nitrogen dioxide (NO{sub 2}). The diurnal change of absorption and scattering coefficients during the polluted (inversion) days increased approximately by a factor of two for all wavelengths compared to the clean days. The spectral variation in aerosol absorption coefficients indicated a significant amount of absorbing aerosol from traffic emissions and residential wood burning. The analysis of single scattering albedo (SSA), Angstrom exponent of absorption (AEA), and Angstrom exponent of scattering (AES) for clean and polluted days provides evidences that the aerosol aging and coating process is suppressed by strong temperature inversion under cloudy conditions. In general, measured UV absorption coefficients were found to be much larger for biomass burning aerosol than for typical ambient aerosols.

  18. Single particle characterization, source apportionment, and aging effects of ambient aerosols in Southern California

    E-Print Network [OSTI]

    Shields, Laura Grace

    2008-01-01T23:59:59.000Z

    detection efficiencies of aerosol time of flight masscomposition of ambient aerosol particles. Environmentalsize dependent response of aerosol counters, Atmospheric

  19. LINEAMIENTOS PARA IMPLEMENTAR LOS INSTRUMENTOS ECONÓMICOS DE LA LEGISLACIÓN AMBIENTAL DE LA REGIÓN CENTRO OCCIDENTE DE MÉXICO. RESULTADOS DE UNA INVESTIGACION PROSPECTIVA

    E-Print Network [OSTI]

    Hernandez Aguilar, Gerardo P.; de la Torre, Gabriela Ruiz

    2012-01-01T23:59:59.000Z

    o servicios con impacto ambiental positivo, gestionarde una evaluación de impacto ambiental). Criterios generalesque determine el estudio de impacto ambiental y estimular al

  20. AMBIENT PM2.5 SAMPLING AND ANALYSIS

    SciTech Connect (OSTI)

    Unknown

    2001-10-31T23:59:59.000Z

    This interim report summarizes detailed findings and conclusions drawn from evaluations of data obtained from the operation of ambient PM{sub 2.5} speciation sites in a geographical area encompassing southeastern Ohio, western Pennsylvania and northwestern West Virginia. The overall goal of this program, called the Upper Ohio River Valley Project (UORVP), is to better understand the relationship between coal-based power system emissions and ambient air quality in the Upper Ohio River Valley region through the collection of chemically resolved or speciated data. A summary of the sampling activities, sample analyses and the correlation and interpretation of data acquired from February 1999 through March of 2001 are reported. Mass and speciated data from urban and rural sources are compared and seasonal variations in PM{sub 2.5} distribution are also examined. Correlations between meteorological parameters and total PM{sub 2.5} mass are also presented.

  1. AMBIENT PM2.5 SAMPLING AND ANALYSIS

    SciTech Connect (OSTI)

    Unknown

    2002-10-31T23:59:59.000Z

    This interim report summarizes detailed findings and conclusions drawn from evaluations of data obtained from the operation of ambient PM{sub 2.5} speciation sites in a geographical area encompassing southeastern Ohio, western Pennsylvania and northwestern West Virginia. The overall goal of this program, called the Upper Ohio River Valley Project (UORVP), is to better understand the relationship between coal-based power system emissions and ambient air quality in the Upper Ohio River Valley region through the collection of chemically resolved or speciated data. A summary of the sampling activities, sample analyses and the correlation and interpretation of data acquired from February 1999 through March of 2001 are reported. Mass and speciated data from urban and rural sources are compared and seasonal variations in PM{sub 2.5} distribution are also examined. Correlations between meteorological parameters and total PM{sub 2.5} mass are also presented.

  2. AMBIENT PM2.5 SAMPLING AND ANALYSIS

    SciTech Connect (OSTI)

    Unknown

    2001-04-30T23:59:59.000Z

    This is the third semi-annual technical progress report summarizing observations and tentative conclusions drawn from evaluations of the data captured to date from the operation of the ambient PM{sub 2.5} speciation sites in a geographical area encompassing southeastern Ohio, western Pennsylvania, and northwestern West Virginia. The overall goal of this program, called the Upper Ohio River Valley Project (UORVP), is to better understand the relationship between coal-based power system emissions and ambient air quality in the upper Ohio River Valley region through the collection of chemically resolved or speciated data. In order to provide a ''stand alone'' document, this report contains updated versions of Section 1 (Introduction) and Section 2 (Experimental) in their entirety from the first report.

  3. Exploring Early Evaluation Techniques of Ambient Health Promoting Devices in Home Environments of Senior

    E-Print Network [OSTI]

    Connelly, Kay

    Plant and the MiMo (Mirror Motive). We used technology probe for early evaluation of the Ambient Plant of a familiar domestic object and practice. 2.1 Prototyping method for Ambient Plant: Technology Probe We upon the existing conceptual models of health monitoring ambient devices. Categories and Subject

  4. Nombre : ECONOMA DE LA ENERGA Y EL MEDIO AMBIENTE / ENERGY ECONOMICS AND THE ENVIRONMENT

    E-Print Network [OSTI]

    Rudnick, Hugh

    entre desarrollo e impacto del medio ambiente. Aplicaremos este enfoque a las principales temáticas de las centrales termoeléctricas, se modelará su impacto en el medio ambiente y se proyectaráNombre : ECONOMÍA DE LA ENERGÍA Y EL MEDIO AMBIENTE / ENERGY ECONOMICS AND THE ENVIRONMENT Sigla

  5. CoHemis colabora con nuevo proyecto de NSF para la adaptacin sustentable de ambientes costeros

    E-Print Network [OSTI]

    Gilbes, Fernando

    CoHemis colabora con nuevo proyecto de NSF para la adaptación sustentable de ambientes costeros Por generar soluciones viables económicamente pero a la misma vez amigables con el ambiente. Para lograr esto acompañan como co-investigadores los Drs. Don Degroot (profesor de ingeniería civil y ambiental en UMASS

  6. Ambient methods and apparatus for rapid laser trace constituent analysis

    DOE Patents [OSTI]

    Snyder, Stuart C. (Idaho Falls, ID); Partin, Judy K. (Idaho Falls, ID); Grandy, Jon D. (Idaho Falls, ID); Jeffery, Charles L. (Blackfoot, ID)

    2002-01-01T23:59:59.000Z

    A method and apparatus are disclosed for measuring trace amounts of constituents in samples by using laser induced breakdown spectroscopy and laser induced fluorescence under ambient conditions. The laser induced fluorescence is performed at a selected wavelength corresponding to an absorption state of a selected trace constituent. The intensity value of the emission decay signal which is generated by the trace constituent is compared to calibrated emission intensity decay values to determine the amount of trace constituent present.

  7. Mode Shape Estimation Algorithms Under Ambient Conditions: A Comparative Review

    SciTech Connect (OSTI)

    Dosiek, Luke; Zhou, Ning; Pierre, John W.; Huang, Zhenyu; Trudnowski, Daniel J.

    2013-05-01T23:59:59.000Z

    Abstract—This paper provides a comparative review of five existing ambient electromechanical mode shape estimation algorithms, i.e., the Transfer Function (TF), Spectral, Frequency Domain Decomposition (FDD), Channel Matching, and Subspace Methods. It is also shown that the TF Method is a general approach to estimating mode shape and that the Spectral, FDD, and Channel Matching Methods are actually special cases of it. Additionally, some of the variations of the Subspace Method are reviewed and the Numerical algorithm for Subspace State Space System IDentification (N4SID) is implemented. The five algorithms are then compared using data simulated from a 17-machine model of the Western Electricity Coordinating Council (WECC) under ambient conditions with both low and high damping, as well as during the case where ambient data is disrupted by an oscillatory ringdown. The performance of the algorithms is compared using the statistics from Monte Carlo Simulations and results from measured WECC data, and a discussion of the practical issues surrounding their implementation, including cases where power system probing is an option, is provided. The paper concludes with some recommendations as to the appropriate use of the various techniques. Index Terms—Electromechanical mode shape, small-signal stability, phasor measurement units (PMU), system identification, N4SID, subspace.

  8. Title: Temperature acclimation (tempering) of hard clams Mercenaria mercenaria does not alter levels of Vibrio vulnificus

    E-Print Network [OSTI]

    Florida, University of

    of aquacultured hard clams (Mercenaria mercenaria) in order to reduce mortalities associated with cold temperature.A.C.) allowed initial storage for 6 hours at ambient temperature, followed by 10 hours at 68ºF (20º growing industry in Florida and has placed the state in the forefront of clam production nationwide

  9. Four combinations of two cosine gratings, the 2nd and 6th harmonics of a 0.5 c/deg grating (1 c/deg and 3 c/deg respectively), were used as the target stimulus patterns. Pattern 1 is the 2nd harmonic in isolation, pattern 2 is the 6th harmonic in isolatio

    E-Print Network [OSTI]

    Klein, Stanley

    METHODS Four combinations of two cosine gratings, the 2nd and 6th harmonics of a 0.5 c/deg grating harmonic in isolation, pattern 2 is the 6th harmonic in isolation, pattern 3 is the 2nd plus the 6th and pattern 4 is the 2nd minus the 6th. The one-dimensional noise was the sum of 1st-7th harmonics of a 0.5c

  10. LX-17 Deflagration at High Pressures and Temperatures

    SciTech Connect (OSTI)

    Koerner, J; Maienschein, J; Black, K; DeHaven, M; Wardell, J

    2006-10-23T23:59:59.000Z

    We measure the laminar deflagration rate of LX-17 (92.5 wt% TATB, 7.5 wt% Kel-F 800) at high pressure and temperature in a strand burner, thereby obtaining reaction rate data for prediction of thermal explosion violence. Simultaneous measurements of flame front time-of-arrival and temporal pressure history allow for the direct calculation of deflagration rate as a function of pressure. Additionally, deflagrating surface areas are calculated in order to provide quantitative insight into the dynamic surface structure during deflagration and its relationship to explosion violence. Deflagration rate data show that LX-17 burns in a smooth fashion at ambient temperature and is represented by the burn rate equation B = 0.2P{sup 0.9}. At 225 C, deflagration is more rapid and erratic. Dynamic deflagrating surface area calculations show that ambient temperature LX-17 deflagrating surface areas remain near unity over the pressure range studied.

  11. Photoluminescence in the Ca{sub x}Sr{sub 1-x}WO{sub 4} system at room temperature

    SciTech Connect (OSTI)

    Porto, S.L. [Laboratorio de Combustiveis e Materiais (LACOM/DQ/CCEN), Universidade Federal da Paraiba, Campus I, Cidade Universitaria, Joao Pessoa, PB, CEP 58059-900 (Brazil); Longo, E. [CMDMC/LIEC, Instituto de Quimica, UNESP-Araraquara, Rua Prof. Francisco Degni s/n, Araraquara, SP, CEP 14800-900 (Brazil); Pizani, P.S.; Boschi, T.M. [Departamento de Fisica, Universidade Federal de Sao Carlos, Sao Carlos, Rodovia Washington Luiz km 235, SP, CEP 13565-905 (Brazil); Simoes, L.G.P. [Centro Multidisciplinar de Desenvolvimento de Materiais Ceramicos (LIEC/DQ), Universidade Federal de Sao Carlos, Rodovia Washington Luiz km 235, Sao Carlos, SP, CEP 13565-905 (Brazil); Lima, S.J.G. [Laboratorio de Solidificacao Rapida, Departamento de Tecnologia Mecanica (LSR/DTM/CT), Universidade Federal da Paraiba, Campus I, Cidade Universitaria, Joao Pessoa, PB, CEP 58059-900 (Brazil); Ferreira, J.M. [Laboratorio de Combustiveis e Materiais (LACOM/DQ/CCEN), Universidade Federal da Paraiba, Campus I, Cidade Universitaria, Joao Pessoa, PB, CEP 58059-900 (Brazil); COAMA, Area de Meio Ambiente, Centro Federal de Educacao Tecnologica da Paraiba, Av. 1o de Maio 720, Jaguaribe, Joao Pessoa, PB, CEP 58015-430 (Brazil); Soledade, L.E.B.; Espinoza, J.W.M.; Cassia-Santos, M.R.; Maurera, M.A.M.A. [Laboratorio de Combustiveis e Materiais (LACOM/DQ/CCEN), Universidade Federal da Paraiba, Campus I, Cidade Universitaria, Joao Pessoa, PB, CEP 58059-900 (Brazil); Paskocimas, C.A. [Departamento de Engenharia Mecanica, Universidade Federal do Rio Grande do Norte, Natal, RN, CEP 59072-970 (Brazil); Santos, I.M.G. [Laboratorio de Combustiveis e Materiais (LACOM/DQ/CCEN), Universidade Federal da Paraiba, Campus I, Cidade Universitaria, Joao Pessoa, PB, CEP 58059-900 (Brazil)], E-mail: ieda@quimica.ufpb.br; Souza, A.G. [Laboratorio de Combustiveis e Materiais (LACOM/DQ/CCEN), Universidade Federal da Paraiba, Campus I, Cidade Universitaria, Joao Pessoa, PB, CEP 58059-900 (Brazil)

    2008-08-15T23:59:59.000Z

    In this work, a study was undertaken about the structural and photoluminescent properties, at room temperature, of powder samples from the Ca{sub x}Sr{sub 1-x}WO{sub 4} (x=0-1.0) system, synthesized by a soft chemical method and heat treated between 400 and 700 deg. C. The material was characterized using Infrared, UV-vis and Raman spectroscopy and XRD. The most intense PL emission was obtained for the sample calcined at 600 deg. C, which is neither highly disordered (400-500 deg. C), nor completely ordered (700 deg. C). Corroborating the role of disorder in the PL phenomenon, the most intense PL response was not observed for pure CaWO{sub 4} or SrWO{sub 4}, but for Ca{sub 0.6}Sr{sub 0.4}WO{sub 4}. The PL emission spectra could be separated into two Gaussian curves. The lower wavelength peak is placed around 530 nm, and the higher wavelength peak at about 690 nm. Similar results were reported in the literature for both CaWO{sub 4} and SrWO{sub 4}. - Graphical abstract: The structural and room temperature photoluminescence of Ca{sub x}Sr{sub 1-x}WO4 synthesized by a soft chemical method was studied. The most intense PL emission was obtained for the sample calcined at 600 deg. C, that is neither highly disordered (400-500 deg. C), nor completely ordered (700 deg. C). Corroborating the role of disorder in the PL phenomenon, the most intense PL response was not observed for pure CaWO{sub 4} or SrWO{sub 4}, but for Ca{sub 0.6}Sr{sub 0.4}WO{sub 4}.

  12. Studies on Temperature Dependence of Rubidium Lamp for Atomic Frequency Standard

    SciTech Connect (OSTI)

    Ghosal, Bikash; Banik, Alak; Vats, Vaibhav; Pal, Sukamal; Bahl, R. K [Space Applications Centre, ISRO, Ahmedabad-380015 (India)

    2011-10-20T23:59:59.000Z

    Rb lamp is a very critical component of the Rb atomic clock's Physics Package. The Rb lamp's performance is very sensitive to temperature and its stability. In this paper we discuss the behaviors of Rb Lamp with temperature. The Rb lamp exciter power and temperature of Rb bulb are very important parameters in controlling the performance of the Rb Lamp. It is observed that at temperatures beyond 110 deg. C, the lamp mode changes from the ring to red mode resulting in abnormal broadening of emission lines and self reversal. The results of our studies on spectral analysis of Rb lamp under various operating conditions are reported in the paper.

  13. Effect of buffer layer growth temperature on epitaxial GaN films deposited by magnetron sputtering

    SciTech Connect (OSTI)

    Mohanta, P.; Singh, D.; Kumar, R.; Ganguli, T.; Srinivasa, R. S.; Major, S. S. [Center For Research in Nano-Technology and Science (India); Semiconductor Laser Section, RRCAT, Indore-452013 (India); Department of Metallurgical Engineering and Materials Science (India); Department of Physics, Indian Institute of Technology Bombay, Mumbai - 400076 (India)

    2012-06-05T23:59:59.000Z

    Epitaxial GaN films were deposited by reactive sputtering of a GaAs target in 100 % nitrogen at 700 deg. C on ZnO buffer layers grown at different substrate temperatures over sapphire substrates. High resolution X-ray diffraction measurements and the corresponding analysis show that the growth temperature of buffer layers significantly affects the micro-structural parameters of GaN epilayer, such as lateral coherence length, tilt and twist, while the vertical coherence length remains unaffected. The optimum substrate temperature for buffer layer growth has been found to be 300 deg. C. High epitaxial quality GaN film grown on such a buffer layer exhibited micro strain of 1.8x10{sup -4} along with screw and edge type dislocation densities of 7.87x10{sup 9} and 1.16x10{sup 11}, respectively.

  14. Quantum Field Theory in de Sitter Universe: Ambient Space Formalism

    E-Print Network [OSTI]

    Mohammad Vahid Takook

    2014-09-03T23:59:59.000Z

    Quantum field theory in the $4$-dimensional de Sitter space-time is constructed on a unique Bunch-Davies vacuum state in the ambient space formalism in a rigorous mathematical framework. This work is based on the group representation theory and the analyticity of the complexified pseudo-Riemannian manifolds. The unitary irreducible representations of de Sitter group and their corresponding Hilbert spaces are reformulated in the ambient space formalism. Defining the creation and annihilation operators, quantum field operators and their corresponding analytic two-point functions for various spin fields ($s=0,\\frac{1}{2},1,\\frac{3}{2}, 2$) have been constructed. The various spin massless fields can be constructed in terms of the massless conformally coupled scalar field in this formalism. Then the quantum massless minimally coupled scalar field operator, for the first time, is also constructed on Bunch-Davies vacuum state which preserve the analyticity. We show that the massless fields with $s\\leq 2$ can only propagate in de Sitter ambient space formalism. The massless gauge invariant field equations with $s=1, \\frac{3}{2}, 2$ are studied by using the gauge principle. The conformal quantum spin-$2$ field, based on the gauge gravity model, is studied. The gauge spin-$\\frac{3}{2}$ fields satisfy the Grassmannian algebra, and hence, naturally provoke one to couple them with the gauge spin-$2$ field and the super-algebra is automatically appeared. We conclude that the gravitational field may be constructed by three parts, namely, the de Sitter background, the gauge spin-$2$ field and the gauge spin-$\\frac{3}{2}$ field.

  15. Complete Fiber/Copper Cable Solution for Long-Term Temperature and Pressure Measurement in Supercritical Reservoirs and EGS Wells

    Broader source: Energy.gov [DOE]

    Project objectives: 1. Optical fibers that resist hydrogen darkening? for several months instead of hours and days at 300 deg. C and higher. 2. Tube encapsulated cable (TEC) construction that functions as a distributed temperature sensor (DTS) and a power source for a downhole pressure sensor.

  16. Verifying TRU Passive DPF Cold Ambient Performance | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your DensityEnergy U.S.-China Electric Vehicle and03/02Report | DepartmentTRU Passive DPF Cold Ambient

  17. 366 IEEE JOURNAL OF QUANTUM ELECTRONICS, VOL. 36, NO. 3, MARCH 2000 Self-Consistent Analysis of High-Temperature Effects

    E-Print Network [OSTI]

    Bowers, John

    -dependent [1]. Self-heating or ambient tempera- ture elevation cause the threshold current to increase (1.3 m) [5]. The difference between both temperatures reflects the effect of self-heating

  18. Ultra-High Temperature Sensors Based on Optical Property

    SciTech Connect (OSTI)

    Nabeel Riza

    2008-09-30T23:59:59.000Z

    In this program, Nuonics, Inc. has studied the fundamentals of a new Silicon Carbide (SiC) materials-based optical sensor technology suited for extreme environments of coal-fired engines in power production. The program explored how SiC could be used for sensing temperature, pressure, and potential gas species in a gas turbine environment. The program successfully demonstrated the optical designs, signal processing and experimental data for enabling both temperature and pressure sensing using SiC materials. The program via its sub-contractors also explored gas species sensing using SiC, in this case, no clear commercially deployable method was proven. Extensive temperature and pressure measurement data using the proposed SiC sensors was acquired to 1000 deg-C and 40 atms, respectively. Importantly, a first time packaged all-SiC probe design was successfully operated in a Siemens industrial turbine rig facility with the probe surviving the harsh chemical, pressure, and temperature environment during 28 days of test operations. The probe also survived a 1600 deg-C thermal shock test using an industrial flame.

  19. Undulator Hall Air Temperature Fault Scenarios

    SciTech Connect (OSTI)

    Sevilla, J.; Welch, J.; /SLAC; ,

    2010-11-17T23:59:59.000Z

    Recent experience indicates that the LCLS undulator segments must not, at any time following tuning, be allowed to change temperature by more than about {+-}2.5 C or the magnetic center will irreversibly shift outside of acceptable tolerances. This vulnerability raises a concern that under fault conditions the ambient temperature in the Undulator Hall might go outside of the safe range and potentially could require removal and retuning of all the segments. In this note we estimate changes that can be expected in the Undulator Hall air temperature for three fault scenarios: (1) System-wide power failure; (2) Heating Ventilation and Air Conditioning (HVAC) system shutdown; and (3) HVAC system temperature regulation fault. We find that for either a system-wide power failure or an HVAC system shutdown (with the technical equipment left on), the short-term temperature changes of the air would be modest due to the ability of the walls and floor to act as a heat ballast. No action would be needed to protect the undulator system in the event of a system-wide power failure. Some action to adjust the heat balance, in the case of the HVAC power failure with the equipment left on, might be desirable but is not required. On the other hand, a temperature regulation failure of the HVAC system can quickly cause large excursions in air temperature and prompt action would be required to avoid damage to the undulator system.

  20. Investigations into High Temperature Components and Packaging

    SciTech Connect (OSTI)

    Marlino, L.D.; Seiber, L.E.; Scudiere, M.B.; M.S. Chinthavali, M.S.; McCluskey, F.P.

    2007-12-31T23:59:59.000Z

    The purpose of this report is to document the work that was performed at the Oak Ridge National Laboratory (ORNL) in support of the development of high temperature power electronics and components with monies remaining from the Semikron High Temperature Inverter Project managed by the National Energy Technology Laboratory (NETL). High temperature electronic components are needed to allow inverters to operate in more extreme operating conditions as required in advanced traction drive applications. The trend to try to eliminate secondary cooling loops and utilize the internal combustion (IC) cooling system, which operates with approximately 105 C water/ethylene glycol coolant at the output of the radiator, is necessary to further reduce vehicle costs and weight. The activity documented in this report includes development and testing of high temperature components, activities in support of high temperature testing, an assessment of several component packaging methods, and how elevated operating temperatures would impact their reliability. This report is organized with testing of new high temperature capacitors in Section 2 and testing of new 150 C junction temperature trench insulated gate bipolar transistor (IGBTs) in Section 3. Section 4 addresses some operational OPAL-GT information, which was necessary for developing module level tests. Section 5 summarizes calibration of equipment needed for the high temperature testing. Section 6 details some additional work that was funded on silicon carbide (SiC) device testing for high temperature use, and Section 7 is the complete text of a report funded from this effort summarizing packaging methods and their reliability issues for use in high temperature power electronics. Components were tested to evaluate the performance characteristics of the component at different operating temperatures. The temperature of the component is determined by the ambient temperature (i.e., temperature surrounding the device) plus the temperature increase inside the device due the internal heat that is generated due to conduction and switching losses. Capacitors and high current switches that are reliable and meet performance specifications over an increased temperature range are necessary to realize electronics needed for hybrid-electric vehicles (HEVs), fuel cell (FC) and plug-in HEVs (PHEVs). In addition to individual component level testing, it is necessary to evaluate and perform long term module level testing to ascertain the effects of high temperature operation on power electronics.

  1. Accuracy of Distributed Optical Fiber Temperature Sensing for Use in Leak Detection of Subsea Pipelines

    E-Print Network [OSTI]

    Madabhushi, S.; Elshafie, M. Z. E. B.; Haigh, S. K.

    2014-09-25T23:59:59.000Z

    described later. A change of density causes a phonon wave to travel through the medium. Brillouin scattering is the interaction of an electromagnetic wave with this density wave; photon-phonon scattering. The frequency at which the backscattered signal... m to accommodate a 3 m spatial resolution. The applied temperature was modelled as a square pulse of magnitude equal to the applied temperature for the exposed length, and ambient temperature elsewhere. Figure 3 shows the expected output from...

  2. Effects of ambient ozone on respiratory function and symptoms in Mexico City schoolchildren

    SciTech Connect (OSTI)

    Castillejos, M.; Gold, D.R.; Dockery, D.; Tosteson, T.; Baum, T.; Speizer, F.E. (Universidad Autonoma Metropolitana-X, Mexico City, (Mexico))

    1992-02-01T23:59:59.000Z

    The effects of ambient ozone (O3) on respiratory function and acute respiratory symptoms were evaluated in 143 7- to 9-yr-old schoolchildren followed longitudinally at 1- to 2-wk intervals over a period of 6 months at three schools in Pedregal, Mexico City. The maximum O3 level exceeded the World Health Organization guideline of 80 ppb and the U.S. standard of 120 ppb in every week. For an increase from lowest to highest in the mean O3 level during the 48 hr before spirometry (53 ppb), logistic regression estimated relative odds of 1.7 for a child reporting cough/phlegm on the day of spirometry. For the full population, the mean O3 level during the hour before spirometry, not adjusted for temperature and humidity, predicted a significant decrement in FVC but not in FEV1 or FEF25-75. In contrast, the mean O3 level during the previous 24-, 48-, and 168-h periods predicted significant decrements in FEV1 and FEF25-75 but not in FVC. Ozone was consistently associated with a greater decrement in lung function for the 15 children with chronic phlegm as compared with the children without chronic cough, chronic phlegm, or wheeze. Ozone in the previous 24-, 48-, and 168-h periods predicted decrements in FEV1 for children of mothers who were current or former smokers, but not for children of mothers who were never smokers. Many of these effects were reduced in multiple regression analyses including temperature and humidity, as temperature and O3 were highly correlated.

  3. The LSST Camera 500 watt -130 degC Mixed Refrigerant Cooling System

    SciTech Connect (OSTI)

    Bowden, Gordon B.; Langton, Brian J.; /SLAC; Little, William A.; /MMR-Technologies, Mountain View, CA; Powers, Jacob R; Schindler, Rafe H.; /SLAC; Spektor, Sam; /MMR-Technologies, Mountain View, CA

    2014-05-28T23:59:59.000Z

    The LSST Camera has a higher cryogenic heat load than previous CCD telescope cameras due to its large size (634 mm diameter focal plane, 3.2 Giga pixels) and its close coupled front-end electronics operating at low temperature inside the cryostat. Various refrigeration technologies are considered for this telescope/camera environment. MMR-Technology’s Mixed Refrigerant technology was chosen. A collaboration with that company was started in 2009. The system, based on a cluster of Joule-Thomson refrigerators running a special blend of mixed refrigerants is described. Both the advantages and problems of applying this technology to telescope camera refrigeration are discussed. Test results from a prototype refrigerator running in a realistic telescope configuration are reported. Current and future stages of the development program are described. (auth)

  4. coleo explorando o ensino o brasil e o meio ambiente antrtico

    E-Print Network [OSTI]

    coleção explorando o ensino 10 volume o brasil e o meio ambiente antártico #12;#12;coleção explorando o ensino volume 10 ensino fundamental e ensino médio o brasil e o meio ambiente antártico #12 Dados Internacionais de Catalogação na Publicação (CIP) O Brasil e o meio ambiente antártico : ensino

  5. High Temperatures & Electricity Demand

    E-Print Network [OSTI]

    High Temperatures & Electricity Demand An Assessment of Supply Adequacy in California Trends.......................................................................................................1 HIGH TEMPERATURES AND ELECTRICITY DEMAND.....................................................................................................................7 SECTION I: HIGH TEMPERATURES AND ELECTRICITY DEMAND ..........................9 BACKGROUND

  6. Personal and Ambient Air Pollution is Associated with Increased Exhaled Nitric Oxide in Children with Asthma

    E-Print Network [OSTI]

    2006-01-01T23:59:59.000Z

    in pediatric asthmatics and air pollution: differences inwith peak particulate air pollution and effect modificationnitric oxide, ambient air pollution and respiratory health

  7. Chapter 51 Attainment and Maintenance of the National Ambient Air Quality Standards (Kentucky)

    Broader source: Energy.gov [DOE]

    Kentucky Administrative Regulation Chapter 51, entitled Attainment and Maintenance of the National Ambient Air Quality Standards, is promulgated under the authority of the Division of Air Quality...

  8. Chemical reactivities of ambient air samples in three Southern California communities

    E-Print Network [OSTI]

    2015-01-01T23:59:59.000Z

    like substances in air pollution particulates correalte withcontrol of ambient urban air pollution. Atmos. Environ. 91:of oxidative stress by air pollution mixtures. The PM 2.5

  9. E-Print Network 3.0 - ambient sulfate particulate Sample Search...

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

    MCMA. Whereas fresh particulate emissions from mixed-traffic are almost entirely... lubricating oil and water, ambient soot particles which have been processed for less than a few...

  10. ambiente solo-semente por: Topics by E-print Network

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

    de cdigo aberto baseado (more) Adriano da Silva Ferreira; 2013-01-01 8 EVALUACIN DEL IMPACTO AMBIENTAL Environmental Sciences and Ecology Websites Summary: EVALUACI?N DEL...

  11. PREPARATIVOS EN MARCHA PARA LA CONFERENCIA SOBRE JUSTICIA AMBIENTAL NACIONAL Y EL PROGRAMA DE CAPACITACIÓN 2014

    Broader source: Energy.gov [DOE]

    La conferencia regresa a D.C. del 26 al 28 de marzo de 2014 con la celebración de los 20 años de justicia ambiental pasados y futuros.

  12. Characterization of ambient air pollution for stochastic health models

    SciTech Connect (OSTI)

    Batterman, S.A.

    1981-08-01T23:59:59.000Z

    This research is an analysis of various measures of ambient air pollution useful in cross-sectional epidemiological investigations and rick assessments. The Chestnut Ridge area health effects investigation, which includes a cross-sectional study of respiratory symptoms in young children, is used as a case study. Four large coal-fired electric generating power plants are the dominant pollution sources in this area of western Pennsylvania. The air pollution data base includes four years of sulfur dioxide and five years of total suspended particulate concentrations at seventeen monitors. Some 70 different characterizations of pollution are constructed and tested. These include pollutant concentrations at various percentiles and averaging times, exceedence measures which show the amount of time a specified threshold concentration is exceeded, and several dosage measures which transform non-linear dose-response relationships onto pollutant concentrations.

  13. Topographic Effects on Ambient Dose Equivalent Rates from Radiocesium Fallout

    E-Print Network [OSTI]

    Malins, Alex; Machida, Masahiko; Saito, Kimiaki

    2015-01-01T23:59:59.000Z

    Land topography can affect air radiation dose rates by locating radiation sources closer to, or further, from detector locations when compared to perfectly flat terrain. Hills and slopes can also shield against the propagation of gamma rays. To understand the possible magnitude of topographic effects on air dose rates, this study presents calculations for ambient dose equivalent rates at a range of heights above the ground for varying land topographies. The geometries considered were angled ground at the intersection of two planar surfaces, which is a model for slopes neighboring flat land, and a simple conical geometry, representing settings from hilltops to valley bottoms. In each case the radiation source was radioactive cesium fallout, and the slope angle was varied systematically to determine the effect of topography on the air dose rate. Under the assumption of homogeneous fallout across the land surface, and for these geometries and detector locations, the dose rates at high altitudes are more strongly...

  14. Volcanic gas emissions and their effect on ambient air character

    SciTech Connect (OSTI)

    Sutton, A.J. [Geological Survey, Menlo Park, CA (United States); Elias, T. [Geological Survey, Hawaii National Park, HI (United States). Hawaiian Volcano Observatory

    1994-01-01T23:59:59.000Z

    This bibliography was assembled to service an agreement between Department of Energy and the USGS to provide a body of references and useful annotations for understanding background gas emissions from Kilauea volcano. The current East Rift Zone (ERZ) eruption of Kilauea releases as much as 500,000 metric tonnes of SO{sub 2} annually, along with lesser amounts of other chemically and radiatively active species including H{sub 2}S, HCl, and HF. Primary degassing locations on Kilauea are located in the summit caldera and along the middle ERZ. The effects of these emissions on ambient air character are a complex function of chemical reactivity, source geometry and effusivity, and local meteorology. Because of this complexity, we organized the bibliography into three main sections: (1) characterizing gases as they leave the edifice; (2) characterizing gases and chemical reaction products away from degassing sources; and (3) Hawaii Island meteorology.

  15. Reliable Gas Turbine Output: Attaining Temperature Independent Performance

    E-Print Network [OSTI]

    Neeley, J. E.; Patton, S.; Holder, F.

    % of the electric system, could create reliability and operational problems. This paper explores the potential for maintaining constant, reliable outputs from gas turbines by cooling ambient air temperatures before the air is used in the compressor section... strides have been made in the development of both aircraft, aircraft-derivative, and industrial gas turbines. The Basic Cycle The basic gas turbine engine consists of a compressor, a combustor, and a turbine in series. The intake air is compressed...

  16. Development of integrated thermionic circuits for high-temperature applications

    SciTech Connect (OSTI)

    McCormick, J.B.; Wilde, D.; Depp, S.; Hamilton, D.J.; Kerwin, W.

    1981-01-01T23:59:59.000Z

    This report describes a class of microminiature, thin film devices known as integrated thermionic circuits (ITC) capable of extended operation in ambient temperatures up to 500/sup 0/C. The evolution of the ITC concept is discussed. A set of practical design and performance equations is demonstrated. Recent experimental results are discussed in which both devices and simple circuits have successfully operated in 500/sup 0/C environments for extended periods of time (greater than 11,000 hours).

  17. DEFLAGRATION-TO-DETONATION TRANSITION IN LX-04 AS A FUNCTION OF LOADING DENSITY, TEMPERATURE, AND CONFINEMENT

    SciTech Connect (OSTI)

    Sandusky, H W; Granholm, R H; Bohl, D G; Vandersall, K S; Hare, D E; Garcia, F

    2006-06-20T23:59:59.000Z

    The potential for deflagration-to-detonation transition (DDT) in LX-04 (85/15 HMX/Viton) is being evaluated as a function of loading density, temperature, and confinement. In the high confinement arrangement, a matrix of tests is nearly completed with the LX-04 loaded at {approx} 51, 70, 90, and {approx} 99% of theoretical maximum density (TMD); and temperatures of ambient, 160 C, and 190 C at each loading density. A more limited set of tests with {approx}99 %TMD loadings at medium confinement were conducted at temperatures of ambient and 186 C. LX-04 does not undergo DDT at near TMD loadings in both medium and high confinement, although the latter still results in significant fragmentation. Most porous beds in high confinement undergo DDT, with the minimum run distance to detonation (l) for a 70 %TMD loading at ambient temperature. LX-04 does not transit to detonation for a pour density (51.3 %TMD) loading at 160 C, but does at 190 C with a longer l than at ambient. The limited ambient temperature measurements for l in high confinement are similar to previous data for 91/9 HMX/wax, which has nearly the same %volume of HMX as LX-04.

  18. DEFLAGRATION-TO-DETONATION TRANSITION IN LX-04 AS A FUNCTION OF LOADING DENSITY, TEMPERATURE, AND CONFINEMENT

    SciTech Connect (OSTI)

    Sandusky, H W; Granholm, R H; Bohl, D G; Hare, D E; Vandersall, K S; Garcia, F

    2005-06-01T23:59:59.000Z

    The potential for deflagration-to-detonation transition (DDT) in LX-04 (85/15 HMX/Viton) is being evaluated as a function of loading density, temperature, and confinement. In the high confinement arrangement, a matrix of tests will be performed with the LX-04 loaded at {approx}50, 70, 90, and {approx}99 %TMD; and temperatures of ambient, 160 C, and 190 C, at each loading density. A more limited set of tests at medium confinement will be conducted. As expected, LX-04 does not undergo DDT at near TMD loadings in both medium and high confinement, although the later still results in significant fragmentation. In high confinement at pour density (50.3 %TMD), LX-04 does not transit to detonation at 160 C, but does at ambient and 190 C with the shortest run distance to detonation (l) at ambient temperature. With a 70% TMD loading at ambient temperature, l was even less. The limited ambient temperature measurements for l in high confinement are similar to previous data for 91/9 HMX/wax, which has nearly the same %volume of HMX as LX-04.

  19. Determination of subband energies and 2DEG characteristics of Al{sub x}Ga{sub 1?x}N/GaN heterojunctions using variational method

    SciTech Connect (OSTI)

    Manouchehri, Farzin; Valizadeh, Pouya; Kabir, M. Z., E-mail: kabir@encs.concordia.ca [Department of Electrical and Computer Engineering, Concordia University, Montreal, H3G 1M8 (Canada)

    2014-03-15T23:59:59.000Z

    A physics-based model based on the variational method for analyzing the two dimensional electron gas (2DEG) characteristics of polar AlGaN/GaN heterojunctions is developed. The 2DEG carrier concentration, the first and second energy subbands, and the position of the Fermi energy level are calculated for various barrier thicknesses, Al mole fractions, background dopant concentrations, and gate voltages for gated AlGaN/GaN heterojunctions. The results are in good agreement with the data reported based on self-consistent method. Whereas the aforementioned report has dealt with specific values of Al mole fraction, barrier thickness, and unintentional doping level, the present work provides a basis for calculating the 2DEG characteristics for the full range of these parameters. Furthermore, according to the proposed model, the applicability of the triangular approximation of the quantum well in AlGaN/GaN heterojunctions is evaluated.

  20. Algorithms for Temperature-Aware Task Scheduling in Microprocessor Systems

    E-Print Network [OSTI]

    Chrobak, Marek; Hurand, Mathilde; Robert, Julien

    2008-01-01T23:59:59.000Z

    We study scheduling problems motivated by recently developed techniques for microprocessor thermal management at the operating systems level. The general scenario can be described as follows. The microprocessor's temperature is controlled by the hardware thermal management system that continuously monitors the chip temperature and automatically reduces the processor's speed as soon as the thermal threshold is exceeded. Some tasks are more CPU-intensive than other and thus generate more heat during execution. The cooling system operates non-stop, reducing (at an exponential rate) the deviation of the processor's temperature from the ambient temperature. As a result, the processor's temperature, and thus the performance as well, depends on the order of the task execution. Given a variety of possible underlying architectures, models for cooling and for hardware thermal management, as well as types of tasks, this scenario gives rise to a plethora of interesting and never studied scheduling problems. We focus on s...

  1. Laser-plasma diamagnetism in the presence of an ambient magnetized plasma

    E-Print Network [OSTI]

    California at Los Angles, University of

    Laser-plasma diamagnetism in the presence of an ambient magnetized plasma M. VanZeelanda) and W cavity created by a dense laser-produced plasma initially, nlpp /n0 1) expanding into an ambient magnetized background plasma (n0 2 1012 cm 3 ) capable of supporting Alfve´n waves. The experiments

  2. An earth-isolated optically coupled wideband high voltage probe powered by ambient light

    E-Print Network [OSTI]

    Bellan, Paul M.

    An earth-isolated optically coupled wideband high voltage probe powered by ambient light Xiang Zhai) An earth-isolated optically coupled wideband high voltage probe powered by ambient light Xiang Zhaia online 9 October 2012) An earth-isolated optically-coupled wideband high voltage probe has been developed

  3. Abstract--This paper presents ambient mechanical vibrations as an alternative source for energy harvesting, especially

    E-Print Network [OSTI]

    Kumar, Ratnesh

    Abstract--This paper presents ambient mechanical vibrations as an alternative source for energy harvesting, especially beneficial where alternatives such as light, wind, biomass and thermal energy are limited, e.g., powering underground sensors. Transduction of ambient kinetic energy, e.g., the vibrations

  4. Identifying damage locations under ambient vibrations utilizing vector autoregressive models and Mahalanobis distances

    E-Print Network [OSTI]

    Identifying damage locations under ambient vibrations utilizing vector autoregressive models Keywords: Damage location Ambient vibration Vector Autoregressive model Statistical pattern recognition Bridges Structural health monitoring a b s t r a c t This paper presents a study for identifying damage

  5. EDITA: CADEP -La comisin sectorial de la CRUE para la Calidad ambiental, el Desarrollo sostenible

    E-Print Network [OSTI]

    Fraguela, Basilio B.

    #12;EDITA: CADEP - La comisión sectorial de la CRUE para la Calidad ambiental, el Desarrollo EVALUACIÓN DE LA SOSTENIBILIDAD COMISIÓN SECTORIAL DE LA CRUE PARA LA CALIDAD AMBIENTAL, EL DESARROLLO por el Programa de estudios y análisis destinadas a la mejora de la calidad de la enseñanza y de

  6. Fermi Surface of Uranium at Ambient Pressure Gregory S. Boebinger, National High Magnetic Field Laboratory

    E-Print Network [OSTI]

    Weston, Ken

    Fermi Surface of ­Uranium at Ambient Pressure Gregory S. Boebinger, National High Magnetic Field Laboratory DMR-Award 0654118 DC Field Facility User Program The fermi surface of ­Uranium has been measured surface of alpha-uranium at ambient pressure, Phys. Rev. B Rapid Commun., 80, 241101 (2009). B//c-axis B

  7. Internal structure and expansion dynamics of laser ablation plumes into ambient gases

    E-Print Network [OSTI]

    Harilal, S. S.

    Internal structure and expansion dynamics of laser ablation plumes into ambient gases S. S. Harilal 13 December 2002 The effect of ambient gas on the expansion dynamics of the plasma generated by laser together with time resolved emission diagnostics, a triple structure of the plume was observed

  8. INTRODUCTION Energy harvesting is the transformation of ambient energy present in

    E-Print Network [OSTI]

    Sóbester, András

    into electrical energy. This energy is derived from different external sources such as solar power, thermal energyINTRODUCTION Energy harvesting is the transformation of ambient energy present in the environment, wind energy, salinity gradient and kinetic energy. Harvesting energy from ambient vibration has

  9. Ambient noise seismic imaging Journal: McGraw Hill 2008 Yearbook of Science & Technology

    E-Print Network [OSTI]

    Ritzwolle, Mike

    ForReview Ambient noise seismic imaging Journal: McGraw Hill 2008 Yearbook of Science & Technology List of Authors: Ritzwoller, Michael Keywords: ambient noise, seismology, seismic tomography, Rayleigh wave, Love wave, surface wave Abstract: A recent innovation in seismic imaging based on using long time

  10. Rapid thermal annealing of InAs/GaAs quantum dots with a low-temperature-grown InGaP cap layer

    SciTech Connect (OSTI)

    Jiang, W.H.; Thompson, D.A.; Hul'ko, O.; Robinson, B.J.; Mascher, P. [Centre for Electrophotonic Materials and Devices (CEMD), McMaster University, Hamilton, Ontario L8S 4L7 (Canada)

    2006-05-15T23:59:59.000Z

    A single layer of self-assembled InAs quantum dots was grown on a GaAs (001) substrate by gas source molecular-beam epitaxy. The quantum dots were overgrown with 65 nm GaAs, 25 nm InGaP, and a 10 nm GaAs etch-stop layer. This was either uncapped or capped with 100 nm of low-temperature (LT)-grown, lattice-matched InGaP (LT-InGaP) or with a SiO{sub 2} layer or Al{sub 2}O{sub 3} layer. Photoluminescence (PL) measurements were made on samples before and after rapid thermal annealing at 550-900 deg.C and for 15-120 s at 650 deg.C. Samples capped with LT-InGaP showed a significant blueshift of the PL peak wavelength for anneals above 575 deg.C. By comparison, for the SiO{sub 2}-capped and uncapped samples, the net blueshift only becomes significant for anneals >700 deg.C, while an Al{sub 2}O{sub 3} cap actually reduces the blueshift and suppresses the intermixing. It appears that the best conditions for spatially controlling the quantum dot intermixing occur with annealing at low temperatures (600-650 deg.C)

  11. Method for high temperature mercury capture from gas streams

    DOE Patents [OSTI]

    Granite, E.J.; Pennline, H.W.

    2006-04-25T23:59:59.000Z

    A process to facilitate mercury extraction from high temperature flue/fuel gas via the use of metal sorbents which capture mercury at ambient and high temperatures. The spent sorbents can be regenerated after exposure to mercury. The metal sorbents can be used as pure metals (or combinations of metals) or dispersed on an inert support to increase surface area per gram of metal sorbent. Iridium and ruthenium are effective for mercury removal from flue and smelter gases. Palladium and platinum are effective for mercury removal from fuel gas (syngas). An iridium-platinum alloy is suitable for metal capture in many industrial effluent gas streams including highly corrosive gas streams.

  12. Reduced diurnal temperature range does not change warming impacts on ecosystem carbon balance of Mediterranean grassland mesocosms

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

    Phillips, Claire L.; Gregg, Jillian W. [Terrestrial Ecosystems Research Associates; 200 SW 35th St.; Corvallis; OR; 97333; USA; Wilson, John K. [Terrestrial Ecosystems Research Associates; 200 SW 35th St.; Corvallis; OR; 97333; USA

    2011-11-01T23:59:59.000Z

    Daily minimum temperature (Tmin) has increased faster than daily maximum temperature (Tmax) in many parts of the world, leading to decreases in diurnal temperature range (DTR). Projections suggest these trends are likely to continue in many regions, particularly northern latitudes and in arid regions. Despite wide speculation that asymmetric warming has different impacts on plant and ecosystem production than equal-night-and-day warming, there has been little direct comparison of these scenarios. Reduced DTR has also been widely misinterpreted as a result of night-only warming, when in fact Tmin occurs near dawn, indicating higher morning as well as night temperatures. We report on the first experiment to examine ecosystem-scale impacts of faster increases in Tmin than Tmax, using precise temperature controls to create realistic diurnal temperature profiles with gradual day-night temperature transitions and elevated early morning as well as night temperatures. Studying a constructed grassland ecosystem containing species native to Oregon, USA, we found the ecosystem lost more carbon at elevated than ambient temperatures, but was unaffected by the 3ºC difference in DTR between symmetric warming (constantly ambient +3.5ºC) and asymmetric warming (dawn Tmin=ambient +5ºC, afternoon Tmax= ambient +2ºC). Reducing DTR had no apparent effect on photosynthesis, likely because temperatures were most different in the morning and late afternoon when light was low. Respiration was also similar in both warming treatments, because respiration temperature sensitivity was not sufficient to respond to the limited temperature differences between asymmetric and symmetric warming. We concluded that changes in daily mean temperatures, rather than changes in Tmin/Tmax, were sufficient for predicting ecosystem carbon fluxes in this reconstructed Mediterranean grassland system.

  13. Reduced diurnal temperature range does not change warming impacts on ecosystem carbon balance of Mediterranean grassland mesocosms

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

    Phillips, Claire L.; Gregg, Jillian W.; Wilson, John K.

    2011-11-01T23:59:59.000Z

    Daily minimum temperature (Tmin) has increased faster than daily maximum temperature (Tmax) in many parts of the world, leading to decreases in diurnal temperature range (DTR). Projections suggest these trends are likely to continue in many regions, particularly northern latitudes and in arid regions. Despite wide speculation that asymmetric warming has different impacts on plant and ecosystem production than equal-night-and-day warming, there has been little direct comparison of these scenarios. Reduced DTR has also been widely misinterpreted as a result of night-only warming, when in fact Tmin occurs near dawn, indicating higher morning as well as night temperatures. We reportmore »on the first experiment to examine ecosystem-scale impacts of faster increases in Tmin than Tmax, using precise temperature controls to create realistic diurnal temperature profiles with gradual day-night temperature transitions and elevated early morning as well as night temperatures. Studying a constructed grassland ecosystem containing species native to Oregon, USA, we found the ecosystem lost more carbon at elevated than ambient temperatures, but was unaffected by the 3ºC difference in DTR between symmetric warming (constantly ambient +3.5ºC) and asymmetric warming (dawn Tmin=ambient +5ºC, afternoon Tmax= ambient +2ºC). Reducing DTR had no apparent effect on photosynthesis, likely because temperatures were most different in the morning and late afternoon when light was low. Respiration was also similar in both warming treatments, because respiration temperature sensitivity was not sufficient to respond to the limited temperature differences between asymmetric and symmetric warming. We concluded that changes in daily mean temperatures, rather than changes in Tmin/Tmax, were sufficient for predicting ecosystem carbon fluxes in this reconstructed Mediterranean grassland system.« less

  14. Thermal element for maintaining minimum lamp wall temperature in fluorescent fixtures

    DOE Patents [OSTI]

    Siminovitch, M.J.

    1992-11-10T23:59:59.000Z

    In a lighting fixture including a lamp and a housing, an improvement is disclosed for maintaining a lamp envelope area at a cooler, reduced temperature relative to the enclosed housing ambient. The improvement comprises a thermal element in thermal communication with the housing extending to and springably urging thermal communication with a predetermined area of the lamp envelope surface. 12 figs.

  15. Thermal element for maintaining minimum lamp wall temperature in fluorescent fixtures

    DOE Patents [OSTI]

    Siminovitch, Michael J. (Richmond, CA)

    1992-01-01T23:59:59.000Z

    In a lighting fixture including a lamp and a housing, an improvement is disclosed for maintaining a lamp envelope area at a cooler, reduced temperature relative to the enclosed housing ambient. The improvement comprises a thermal element in thermal communication with the housing extending to and springably urging thermal communication with a predetermined area of the lamp envelope surface.

  16. Improving the Performance of Lithium Ion Batteries at Low Temperature

    SciTech Connect (OSTI)

    Trung H. Nguyen; Peter Marren; Kevin Gering

    2007-04-20T23:59:59.000Z

    The ability for Li-ion batteries to operate at low temperatures is extremely critical for the development of energy storage for electric and hybrid electric vehicle technologies. Currently, Li-ion cells have limited success in operating at temperature below –10 deg C. Electrolyte conductivity at low temperature is not the main cause of the poor performance of Li-ion cells. Rather the formation of a tight interfacial film between the electrolyte and the electrodes has often been an issue that resulted in a progressive capacity fading and limited discharge rate capability. The objective of our Phase I work is to develop novel electrolytes that can form low interfacial resistance solid electrolyte interface (SEI) films on carbon anodes and metal oxide cathodes. From the results of our Phase I work, we found that the interfacial impedance of Fluoro Ethylene Carbonate (FEC) electrolyte at the low temperature of –20degC is astonishingly low, compared to the baseline 1.2M LiPFEMC:EC:PC:DMC (10:20:10:60) electrolyte. We found that electrolyte formulations with fluorinated carbonate co-solvent have excellent film forming properties and better de-solvation characteristics to decrease the interfacial SEI film resistance and facilitate the Li-ion diffusion across the SEI film. The very overwhelming low interfacial impedance for FEC electrolytes will translate into Li-ion cells with much higher power for cold cranking and high Regen/charge at the low temperature. Further, since the SEI film resistance is low, Li interaction kinetics into the electrode will remain very fast and thus Li plating during Regen/charge period be will less likely to happen.

  17. Interpolating Vancouver's Daily Ambient PM10 Field Li Sun James V. Zidek Nhu D. Le Haluk Ozkaynak

    E-Print Network [OSTI]

    Washington at Seattle, University of

    Interpolating Vancouver's Daily Ambient PM10 Field Li Sun James V. Zidek Nhu D. Le Haluk Ozkaynak the Center's primary funding. #12;Interpolating Vancouver's Daily Ambient PM10 Field Li Sun1 , James V Zidek1

  18. We the Citizens, English translation of chapter 7 of Paesaggio, Costituzione, cemento: la battaglia per l'ambiente contro il degrado civile (Einaudi, 2010)

    E-Print Network [OSTI]

    Settis, Salvatore

    2011-01-01T23:59:59.000Z

    Costituzione cemento: la battaglia per l’ambiente contro ilCostituzione cemento. La battaglia per l’ambiente contro ilCostituzione cemento: La battaglia per l’ambiente contro il

  19. Effect of shockwave-induced density jump on laser plasma interactions in low-pressure ambient air

    E-Print Network [OSTI]

    Tillack, Mark

    1 Effect of shockwave-induced density jump on laser plasma interactions in low-pressure ambient air jump were investigated in low- pressure ambient air during the laser pulse using an optical interferometer. A tiny shockwave-induced density jump could be observed clearly in ambient air with pressure

  20. GFOC Project results: High Temperature / High Pressure, Hydrogen Tolerant Optical Fiber

    SciTech Connect (OSTI)

    E. Burov; A. Pastouret; E. Aldea; B. Overton; F. Gooijer; A. Bergonzo

    2012-02-12T23:59:59.000Z

    Tests results are given for exposure of multimode optical fiber to high temperatures (300 deg. C) and high partial pressure (15 bar) hydrogen. These results demonstrate that fluorine down doped optical fibers are much more hydrogen tolerant than traditional germanium doped multimode optical fibers. Also demonstrated is the similar hydrogen tolerance of carbon coated and non-carbon coated fibers. Model for reversible H2 impact in fiber versus T{sup o}C and H2 pressure is given. These results have significant impact for the longevity of use for distributed temperature sensing applications in harsh environments such as geothermal wells.

  1. Characterization of ambient particulate matter in the Paso del Norte region

    SciTech Connect (OSTI)

    Li, W.W.; Currey, R.M.; Valenzuela, V.H.; Meuzelaar, H.L.C.; Sheya, S.A.; Anderson, J.R.; Banerjee, S.; Griffin, J.B.

    1999-07-01T23:59:59.000Z

    Air pollution in the Paso del Norte region, where West Texas abuts the southern boundary of New Mexico and the northern boundary of Chihuahua, Mexico is a common concern to the residents on both sides of the border. Parts of the region fail to meet the US and Mexican Ambient Air Quality Standards for particulate matter, ozone, and carbon monoxide. The regional air pollution problem is complicated due to arid climate, complex terrain topography, frequently occurring temperature inversions, extensive unpaved urban areas, an aging and poorly maintained vehicle fleet, and a number of other uncontrolled anthropogenic emission sources. The issue is further complicated by concerns arising from recent scientific evidence of the health effects associated with exposures to fine particulate matter. A study designed to address particulate matter (PM) air pollution problems in the region is currently undertaken by researchers from member universities of the Southwest Center for Environmental Research and Policy and several governmental agencies. The study attempts to (1) characterize the fine fraction of PM; (2) identify and characterize the major regional emission sources; (3) apportion the fine fraction of PM to the source emissions; and (4) establish a regional technological information clearinghouse. The short-term goal of this research is to initiate a research program to characterize, identify, and quantify the sources and nature of the PM in the region. The long-term goal of this study is to establish regional research capabilities to continue air quality monitoring, evaluation, modeling, and control after the implementation of the study. A scoping study to collect regional PM was conducted in December 1998.

  2. Nitrated and oxygenated derivatives of polycyclic aromatic hydrocarbons in the ambient air of two

    E-Print Network [OSTI]

    Boyer, Edmond

    1 Nitrated and oxygenated derivatives of polycyclic aromatic hydrocarbons in the ambient air of two;2 Abstract The size distribution of polycyclic aromatic hydrocarbons (PAHs) and PAH derivatives of compounds. Keywords: Polycyclic aromatic hydrocarbons; Nitrated polycyclic aromatic hydrocarbons; Oxygenated

  3. Sampling precautions for the measurement of nitrated polycyclic aromatic hydrocarbons in ambient air

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 Sampling precautions for the measurement of nitrated polycyclic aromatic hydrocarbons in ambient of polycyclic aromatic hydrocarbons (PAHs) and of their oxidation products, such as nitrated and oxygenated PAHs hydrocarbons; Nitrated polycyclic aromatic hydrocarbons; Oxygenated polycyclic aromatic hydrocarbons; Sampling

  4. Nitrated and oxygenated derivatives of polycyclic aromatic hydrocarbons in the ambient air of two

    E-Print Network [OSTI]

    Boyer, Edmond

    1 Nitrated and oxygenated derivatives of polycyclic aromatic hydrocarbons in the ambient air of two aromatic hydrocarbons, 17 nitrated PAHs (NPAHs) and 8 oxygenated PAHs (OPAHs) were carried out during hydrocarbons; Nitrated polycyclic aromatic hydrocarbons; Oxygenated polycyclic aromatic hydrocarbons

  5. Isolation of ambient aerosols of known critical supersaturation: the differential critical supersaturation separator (DSCS)

    E-Print Network [OSTI]

    Osborn, Robert John

    2007-09-17T23:59:59.000Z

    A field-deployable instrument has been developed that isolates from an ambient aerosol population only those particles that have critical supersaturations, Sc, within a narrow, user-specified, range. This Differential Critical Supersaturation...

  6. Oxidation of ambient biogenic secondary organic aerosol by hydroxyl radicals: Effects on cloud condensation nuclei activity

    E-Print Network [OSTI]

    Wong, J. P. S.

    Changes in the hygroscopicity of ambient biogenic secondary organic aerosols (SOA) due to controlled OH oxidation were investigated at a remote forested site at Whistler Mountain, British Columbia during July of 2010. ...

  7. Water Use Efficiency in Plant Growth and Ambient Carbon Dioxide Level

    E-Print Network [OSTI]

    van Bavel, C. H. M.

    TR-42 1972 Water Use Efficiency in Plant Growth and Ambient Carbon Dioxide Level C.H. M. van Bavel Texas Water Resources Institute Texas A&M University ...

  8. Review paper Seismic interferometry and ambient noise tomography in the British Isles

    E-Print Network [OSTI]

    Review paper Seismic interferometry and ambient noise tomography in the British Isles Heather. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 2. Theory and method of seismic interferometry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 4.2. Seismic interferometry across the Scottish Highlands

  9. Single- and few-layer graphene by ambient pressure chemical vapor deposition on nickel

    E-Print Network [OSTI]

    Reina Ceeco, Alfonso

    2010-01-01T23:59:59.000Z

    An ambient pressure chemical vapor deposition (APCVD) process is used to fabricate graphene based films consisting of one to several graphene layers across their area. Polycrystalline Ni thin films are used and the graphene ...

  10. Universit deg Ripartizione II

    E-Print Network [OSTI]

    Guidoni, Leonardo

    ente d'intes mo, altrimen aluti razione di u o che stann e attraver nazione de o, l'avvio de spesso il

  11. Cooled, temperature controlled electrometer

    DOE Patents [OSTI]

    Morgan, John P. (Idaho Falls, ID)

    1992-01-01T23:59:59.000Z

    A cooled, temperature controlled electrometer for the measurement of small currents. The device employs a thermal transfer system to remove heat from the electrometer circuit and its environment and dissipate it to the external environment by means of a heat sink. The operation of the thermal transfer system is governed by a temperature regulation circuit which activates the thermal transfer system when the temperature of the electrometer circuit and its environment exceeds a level previously inputted to the external variable temperature control circuit. The variable temperature control circuit functions as subpart of the temperature control circuit. To provide temperature stability and uniformity, the electrometer circuit is enclosed by an insulated housing.

  12. Cooled, temperature controlled electrometer

    DOE Patents [OSTI]

    Morgan, John P.

    1992-08-04T23:59:59.000Z

    A cooled, temperature controlled electrometer for the measurement of small currents. The device employs a thermal transfer system to remove heat from the electrometer circuit and its environment and dissipate it to the external environment by means of a heat sink. The operation of the thermal transfer system is governed by a temperature regulation circuit which activates the thermal transfer system when the temperature of the electrometer circuit and its environment exceeds a level previously inputted to the external variable temperature control circuit. The variable temperature control circuit functions as subpart of the temperature control circuit. To provide temperature stability and uniformity, the electrometer circuit is enclosed by an insulated housing.

  13. Scintillation properties of SrI_2(Eu^2+) (Strontium iodide doped with europium) for high energy astrophysical detectors: Nonproportionality as a function of temperature and at high gamma-ray energies

    E-Print Network [OSTI]

    Perea, R S; Groza, M; Caudel, D; Nowicki, S; Burger, A; Stassun, K G; Peterson, T E

    2014-01-01T23:59:59.000Z

    Strontium iodide doped with europium is a new scintillator material being developed as an alternative to lanthanum bromide doped with cerium for use in high energy astrophysical detectors. As with all scintillators, the issue of nonproportionality is important because it affects the energy resolution of the detector. In this study, we investigate how the nonproportionality of strontium iodide doped with europium changes as a function of temperature 16 deg. C to 60 deg. C by heating the strontium iodide doped with europium scintillator separate from the photomultiplier tube. In a separate experiment, we also investigate the nonproportionality at high energies (up to 6 MeV) of strontium iodide doped with europium at a testing facility located at NASA Goddard Space Flight Center. We find that the nonproportionality increases nearly monotonically as the temperature of the strontium iodide doped with europium scintillator is increased, although there is evidence of non-monotonic behavior near 40 deg. C, perhaps du...

  14. Behaviour of ambient temperature on daily basis in Italian climate V. Cuomo, F. Fontana and C. Serio

    E-Print Network [OSTI]

    Boyer, Edmond

    , such as the design and performances calculations of renewable energy tech- nologies (e.g. solar energy systems for modelling daily global solar irradiance Article published online by EDP Sciences and available at http

  15. Amikacin pharmacokinetics and the effects of ambient temperature on the dosage regimen in ball pythons (Python reguis)

    E-Print Network [OSTI]

    Johnson, James Harvey

    1995-01-01T23:59:59.000Z

    respectively. There were no significant pharmacokinetic differences among the snakes housed at 25'C and 37'C. Model independent parameters were area under the curve, 69,900+0.011 ug-min/ml; apparent volume of distribution at steady state, 410+106 ml...

  16. A new predictive dynamic model describing the effect of1 the ambient temperature and the convective heat transfer2

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Ratkowsky "square root" model and a simplified two-parameter20 heat transfer model regarding an infinite

  17. Thermal Comfort under Transient Metabolic and Dynamic Localized Airflow Conditions Combined with Neutral and Warm Ambient Temperatures

    E-Print Network [OSTI]

    Ugursal, Ahmet

    2012-02-14T23:59:59.000Z

    Human thermal environments constitute complex combinations of various interacting thermal factors. The transient and non-uniform nature of those thermal factors further increases the complexity of the thermal comfort problem. The conventional...

  18. Site-Specific Kondo Effect at Ambient Temperatures in Iron-Based Molecules Z. H. Cheng,1

    E-Print Network [OSTI]

    Gao, Hongjun

    . Hu,1 Z. H. Cheng,1 Z. T. Deng,1 Q. Liu,1 N. Jiang,1 X. Lin,1 W. Guo,1 S. X. Du,1 W. A. Hofer,2 X. C

  19. Determination of heat conductivity and thermal diffusivity of waste glass melter feed: Extension to high temperatures

    SciTech Connect (OSTI)

    Rice, Jarrett A. [Pacific Northwest National Laboratory (PNNL), Richland, WA (United States); Pokorny, Richard [Inst. of Chemical Technology, Prague (Czech Republic); Schweiger, Michael J. [Pacific Northwest National Laboratory (PNNL), Richland, WA (United States); Hrma, Pavel R. [Pacific Northwest National Laboratory (PNNL), Richland, WA (United States); Pohang Univ. of Science and Technology (Korea, Republic of)

    2014-06-01T23:59:59.000Z

    The heat conductivity ({lambda}) and the thermal diffusivity (a) of reacting glass batch, or melter feed, control the heat flux into and within the cold cap, a layer of reacting material floating on the pool of molten glass in an all-electric continuous waste glass melter. After previously estimating {lambda} of melter feed at temperatures up to 680 deg C, we focus in this work on the {lambda}(T) function at T > 680 deg C, at which the feed material becomes foamy. We used a customized experimental setup consisting of a large cylindrical crucible with an assembly of thermocouples, which monitored the evolution of the temperature field while the crucible with feed was heated at a constant rate from room temperature up to 1100°C. Approximating measured temperature profiles by polynomial functions, we used the heat transfer equation to estimate the {lambda}(T) approximation function, which we subsequently optimized using the finite-volume method combined with least-squares analysis. The heat conductivity increased as the temperature increased until the feed began to expand into foam, at which point the conductivity dropped. It began to increase again as the foam turned into a bubble-free glass melt. We discuss the implications of this behavior for the mathematical modeling of the cold cap.

  20. Predictions of flow and heat transfer in sharp 180-deg turns of gas turbine coolant channels with and without turning vanes

    SciTech Connect (OSTI)

    Bonhoff, B.; Leusch, J.; Johnson, B.V.

    1999-07-01T23:59:59.000Z

    A numerical study was conducted to determine the effects of turning vanes on the flow characteristics, the pressure drop and the heat transfer distribution in the turn region of two-legged, coolant passages for application to cooling gas turbine blades. The channels consisted of two straight, square-sectioned legs connected by a 180-deg. turn, with an inner radius of 0.15 hydraulic diameters. The ribs were square-sectioned with a height of 0.1 D{sub h}, staggered between leading and trailing side and at an angle of 45-deg. to the flow. Three different configurations of the coolant channel were investigated: with smooth walls, with ribs on two walls and no vane and with ribs on two walls and a 180-deg guide vane in the turn. For all calculations, the Reynolds number at the inlet was Re{sub D} = 100,000, the fluid was water and buoyancy effects were neglected. The simulations were made for rotation numbers, Ro = 0.0 and 0.15. The flow and heat transfer simulations were made with the FLUENT structured code. Based on the results of several previous studies, the differential-Reynolds-Stress turbulence model with wall functions was used. The highest heat transfer in the turn was obtained for both the rotating and non-rotating cases with the ribbed channel without the guide vane. The pressure loss was also higher without the vane. Due to the staggering of the ribs, secondary flow and heat transfer in the turn was higher on the side of the channel where the last rib at the entrance reaches further into the turn. With increasing rotation number, the secondary flow and heat transfer increased on the leading side of the turn. For the configuration with a 180-deg. vane, the mass flux at the outer side of the vane increased with increasing rotation number.

  1. Strings at finite temperature

    SciTech Connect (OSTI)

    Arago C. de; Bazeia, D.; Eboli, O.J.P.; Marques, G.C.

    1985-12-15T23:59:59.000Z

    We obtain a semiclassical evaluation of the temperature for which the free energy of the strings of spontaneously broken scalar electrodynamics vanishes. We argue that, above this temperature, these objects should play a significant physical role.

  2. NON-SOOTING, LOW FLAME TEMPERATURE MIXING-CONTROLLED DI DIESEL COMBUSTION

    SciTech Connect (OSTI)

    Pickett, L; Siebers, D

    2003-08-24T23:59:59.000Z

    Methods of producing non-sooting, low flame temperature diesel combustion were investigated in an optically-accessible, quiescent constant-volume combustion vessel under mixing-controlled diesel combustion conditions. Combustion and soot processes of single, isolated fuel jets were studied after auto-ignition and transient premixed combustion and while the injector was fully-open (i.e. during the mixing-controlled phase of heat release for diesel combustion). The investigation showed that small injector tip orifices could be used to produce non-sooting and low flame temperature combustion simultaneously. The use of small orifices was shown to enable non-sooting and low flame temperature combustion in two different ways as summarized below. A more detailed description of the experimental methods and results is provided in Ref. [1-3]. First, using an injector tip with a 50 micron orifice and ambient oxygen concentrations as low as 10% (simulating the use of extensive EGR), a fuel jet was non-sooting at typical diesel ambient temperatures (1000 K). Second, using the same injector tip at a reduced ambient gas temperature (850 K), but with 21% oxygen, it was shown that non-sooting, mixing-controlled combustion occurred at the lift-off length in a fuel-air mixture with a cross-sectional average equivalence ratio of approximately 0.6-suggesting that the quasi-steady combustion was fuel-lean and thereby avoided the formation of a diffusion flame. The adiabatic flame temperature with reduced ambient oxygen concentration or fuel-lean combustion was approximately 2000 K, compared to typical diesel flame temperatures that exceed 2600 K. The 50 micron orifice results above were obtained using a No.2 diesel fuel. However, using an oxygenated fuel (20 wt% oxygen), the investigation showed that the same low temperature combustion, either with reduced ambient oxygen concentration or fuel-lean combustion, was realized with a 100 micron orifice. Although these single, isolated jets do not have jet-jet interactions that would occur in realistic engines, the results are useful for understanding limiting-case behavior of single-jet mixing and combustion during an injection event. The non-sooting and low flame temperature mixing-controlled combustion realized using small orifice tips suggests that the use of small orifices offers the potential for a simultaneous soot and NOx reduction in an engine, much like diesel HCCI combustion. However, further research is needed to determine whether these methods could be successfully implemented in real engines.

  3. 978-3-9810801-7-9/DATE11/2011 EDAA High-Temperature (>500C) Reconfigurable

    E-Print Network [OSTI]

    Bhunia, Swarup

    , SiC NEMS-based inverters have been fabricated and demonstrated to successfully function at high, txl82, mxm31, skb21}@case.edu Abstract--Many industrial systems, sensors and advanced propulsion systems demand electronics capable of functioning at high ambient temperature in the range of 500-600°C

  4. A statistical comparison of impact and ambient testing results from the Alamosa Canyon Bridge

    SciTech Connect (OSTI)

    Doebling, S.W.; Farrar, C.R. [Los Alamos National Lab., NM (United States); Cornwell, P. [Rose Hulman Inst. of Tech., Terre Haute, IN (United States)

    1996-12-31T23:59:59.000Z

    In this paper, the modal properties of the Alamosa Canyon Bridge obtained using ambient data are compared to those obtained from impact hammer vibration tests. Using ambient sources of excitation to determine the modal characteristics of large civil engineering structures is desirable for several reasons. The forced vibration testing of such structures generally requires a large amount of specialized equipment and trained personnel making the tests quite expensive. Also, an automated health monitoring system for a large civil structure will most likely use ambient excitation. A modal identification procedure based on a statistical Monte Carlo analysis using the Eigensystem Realization Algorithm is used to compute the modal parameters and their statistics. The results show that for most of the measured modes, the differences between the modal frequencies of the ambient and hammer data sets are statistically significant. However, the differences between the corresponding damping ratio results are not statistically significant. Also, one of the modes identified from the hammer test data was not identifiable from the ambient data set.

  5. Response of fish to different simulated rates of water temperature increase

    SciTech Connect (OSTI)

    Wike, L.D.; Tuckfield, R.C.

    1992-08-01T23:59:59.000Z

    We initiated this study to define the limits of effluent-temperature rate increases during reactor restart, which will help minimize fish kills. We constructed an apparatus for exposing fish to various temperature-increase regimens and conducted two experiments based on information from system tests and scoping runs. In the rate experiment, we acclimated the fish to 20{degree}C, and then raised the temperature to 40{degree}C at varying rates. Because scoping runs and literature suggested that acclimation temperature may affect temperature-related mortality, we conducted an acclimation experiment. We acclimated the fish to various temperatures, then raised the temperatures to 39--40{degree}C at a rate of 2{degree}C every 12 hours. Based on the analysis of the data, we recommend temperature-increase rates during reactor restart of 2.5{degree}C every nine hours if ambient water temperatures are over 20{degree}C. If water temperatures are at or below 20{degree}C, we recommend temperature-increase rates of 2.5{degree}C every 12 hours. No regulation of temperature is required after effluent temperatures reach 40{degree}C. We recommend further studies, including expanded testing with the simulation system and behavioral and bioenergetic investigations that may further refine acceptable rates of effluent-temperature increases.

  6. Contexto Actual y Futuro de la Nucleoelectricidad Instrumentos de Poltica Ambiental en los Mercados Elctricos Liberalizados de

    E-Print Network [OSTI]

    Catholic University of Chile (Universidad Católica de Chile)

    revisión de los efectos de la liberalización sobre el impacto ambiental de los sistemas eléctricos; (2) el análisis y la comparación de metodologías para la evaluación del impacto ambiental de los sistemasContexto Actual y Futuro de la Nucleoelectricidad Instrumentos de Política Ambiental en los

  7. The temperature market A stochastic model for temperature

    E-Print Network [OSTI]

    Pfeifer, Holger

    The temperature market A stochastic model for temperature Temperature futures Conclusions The Volatility of Temperature and Pricing of Weather Derivatives Fred Espen Benth Work in collaboration with J Universit¨at Ulm, April 2007 #12;The temperature market A stochastic model for temperature Temperature

  8. Ambient-atmosphere glow discharge for determination of elemental concentration in solutions in a high-throughput or transient fashion

    DOE Patents [OSTI]

    Webb, Michael R. (Somerville, MA); Hieftje, Gary M. (Bloomington, IN); Andrade, Francisco (Leeds, GB)

    2011-04-19T23:59:59.000Z

    An ambient atmosphere glow discharge spectrometer is disclosed having a capillary, two electrodes and a means for recording the atomic emissions.

  9. Effects of thinning on temperature dynamics and mountain pine beetle activity in a lodgepole pine stand. Forest Service research paper

    SciTech Connect (OSTI)

    Bartos, D.L.; Booth, G.D.

    1994-12-01T23:59:59.000Z

    Temperature measurements were made to better understand the role of microclimate on mountain pine beetle, Dendroctonus pondersae Hopkins (Coleoptera:Scolytidae), activity as a result of thinning lodgepole pine stands. Sampling was done over 61 days on the north slope of the Unita Mountain Range in Northeastern Utah. Principal components analysis was applied to all temperature variables. Most of the variation was attributed to two variables, coolest part of the night and hottest part of the day. The thinned stand was approximately 1 deg. C warmer than the unthinned stand.

  10. Electrodeposition and room temperature ferromagnetic anisotropy of Co and Ni-doped ZnO nanowire arrays

    SciTech Connect (OSTI)

    Cui, J.B.; Gibson, U.J. [Thayer School of Engineering, Dartmouth College, Hanover, New Hampshire 03755-8000 (United States)

    2005-09-26T23:59:59.000Z

    Cobalt and nickel doped ZnO nanowire arrays were synthesized by an electrochemical process at a temperature of 90 deg. C. Energy dispersive x-ray spectroscopy and x-ray diffraction show that the dopants are incorporated into the wurtzite-structure ZnO. Anisotropic ferromagnetism with an easy direction of magnetization either perpendicular or parallel to the wire axis, depending on the wire geometry and density, was observed in 1.7% Co and 2.2% Ni-doped ZnO nanowires at room temperature. The anisotropic magnetism was explained in terms of a competition between self-demagnetization and magnetostatic coupling among the nanowires.

  11. Automatic temperature adjustment apparatus

    DOE Patents [OSTI]

    Chaplin, James E. (66 Overlook Rd., Bloomingdale, NJ 07403)

    1985-01-01T23:59:59.000Z

    An apparatus for increasing the efficiency of a conventional central space heating system is disclosed. The temperature of a fluid heating medium is adjusted based on a measurement of the external temperature, and a system parameter. The system parameter is periodically modified based on a closed loop process that monitors the operation of the heating system. This closed loop process provides a heating medium temperature value that is very near the optimum for energy efficiency.

  12. Low temperature cryoprobe

    DOE Patents [OSTI]

    Sungaila, Zenon F. (Orland Park, IL)

    1989-01-01T23:59:59.000Z

    A portable, hand held probe usable within a small confine to produce a point source of nitrogen or helium at a relatively constant temperature of 77 degrees Kelvin.

  13. Temperature and RH Targets

    Broader source: Energy.gov [DOE]

    Presented by Vishal O Mittal of the Florida Solar Energy Center at the High Temperature Membrane Working Group Meeting, San Francisco, September 14, 2006.

  14. Study of the effects of ambient conditions upon the performance of fam powered, infrared, natural gas burners

    SciTech Connect (OSTI)

    Bai, Tiejun

    1996-10-01T23:59:59.000Z

    The objective of this investigation is to characterize the operation of a fan powered infrared burner (PIR burner) at various gas compositions and ambient conditions and develop design guidelines for appliances containing PIR burners for satisfactory performance. The fan powered infrared burner is a technology introduced more recently in the residential and commercial markets. It is a surface combustor that elevates the temperature of the burner head to a radiant condition. A variety of metallic and ceramic materials are used for the burner heads. It has been demonstrated that infrared burners produce low CO and NO{sub x} emissions in a controlled geometric space. This project consists of both experimental research and numerical analysis. To conduct the experiments, an experimental setup has been developed and installed in the Combustion Laboratory at Clerk Atlanta University (CAU). This setup consists of a commercial deep fat fryer that has been modified to allow in-situ radiation measurements on the surface of the infrared burner via a view port installed on the side wall of the oil vat. Proper instrumentation including fuel/air flow rate measurement, exhaust gas emission measurement, and radiation measurement has been developed. The project is progressing well. The scheduled tasks for this period of time were conducted smoothly. Specifically: 1. Baseline experimental study at CAU has been completed. The data are now under detailed analysis and will be reported in next quarterly report. 2. Theoretical formulation and analysis of the PIR burner performance model are continuing. Preliminary results have been obtained.

  15. Solid molecular basket sorbent for CO2 capture from gas streams with low CO2 concentration at ambient conditions

    SciTech Connect (OSTI)

    Wang, Xiaoxing [Pennsylvania State University; Ma, Xiaoliang [Pennsylvania State University; Schwartz, Viviane [ORNL; Clark, Jason C [ORNL; Overbury, Steven {Steve} H [ORNL; Zhao, Shuqi [Pennsylvania State University, University Park, PA; Xu, Xiaochun [Pennsylvania State University; Song, Chunshan [Pennsylvania State University

    2012-01-01T23:59:59.000Z

    In this paper, a solid molecular basket sorbent, 50 wt% PEI/SBA-15 was studied for CO2 capture from gas streams with low CO2 concentration at ambient conditions. The sorbent was able to effectively and selectively capture CO2 from a gas stream containing 1% CO2 at 75 C, with a breakthrough and saturation capacity of 63.1 and 66.7 mg/g, respectively, and a selectivity of 14 for CO2/CO and 185 for CO2/Ar. The sorption performance of the sorbent was influenced greatly by the operating temperature. The CO2-TPD study showed that the sorbent could be regenerated at mild conditions (50-110 C) and was stable in the cyclical operations for at least 20 cycles. Furthermore, the possibility for CO2 capture from air using the PEI/SBA-15 sorbent was studied by FTIR and proved by TPD. A capacity of 22.5 mg/g was attained at 75 C via TPD method using a simulated air with 400 ppmv CO2 in N2.

  16. Ambient pH signaling influences phosphate transport in Neurospora crassa

    E-Print Network [OSTI]

    Kennedy, Patrick Wade

    2007-04-25T23:59:59.000Z

    is related to PalF of Aspergillus nidulans, which is one component of an ambient pH signaling pathway that is conserved among fungi. A deletion mutant for the PacC homolog, another component of the same pathway, phenocopies par-1, demonstrating that a defect...

  17. OASiS: A Service-Oriented Architecture for Ambient-Aware Sensor Networks

    E-Print Network [OSTI]

    Koutsoukos, Xenofon D.

    OASiS: A Service-Oriented Architecture for Ambient-Aware Sensor Networks Xenofon Koutsoukos, Manish networks. This paper presents OASiS, a lightweight service-oriented ar- chitecture for sensor networks that adapt to changes in the network and the environment. An important advan- tage of OASiS is that it allows

  18. Biomass, Flavonol Levels and Sensory Characteristics of Allium cultivars Grown Hydroponically at Ambient and

    E-Print Network [OSTI]

    Paré, Paul W.

    04ICES-136 Biomass, Flavonol Levels and Sensory Characteristics of Allium cultivars Grown growth chambers to evaluate the effect of elevated CO2 (1200 ppm) versus ambient CO2 (400 ppm) on biomass planting (dap). Regardless of cultivar or dap, plants grown at elevated CO2 had greater biomass

  19. Fixed Priority Scheduling Strategies for Ambient Energy-Harvesting Embedded systems

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Fixed Priority Scheduling Strategies for Ambient Energy-Harvesting Embedded systems Maryline Chetto the capability to harvest energy from the environment. The electrical energy which is available to power these devices changes over time and is limited by the size of the energy storage unit such as battery

  20. Ambient Levels of Ultraviolet-B Radiation Cause Mortality in Juvenile Western Toads, Bufo boreas

    E-Print Network [OSTI]

    Blaustein, Andrew R.

    Ambient Levels of Ultraviolet-B Radiation Cause Mortality in Juvenile Western Toads, Bufo boreas industrial gases contribute to the depletion of the earth's protective ozone layer, resulting in increased amounts of cell damaging ultraviolet-B (UV-B) radiation reaching the surface of the earth. Recent

  1. Ambient seismic noise monitoring of a clay landslide: Toward failure prediction

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    to such flow-like movements is the increase in water pore pressure in the sliding mass, generating partial. This article shows that the seismic velocity of the sliding material, measured from daily noise correlograms of the sliding layer. These results demonstrate that ambient seismic noise can be used to detect rigidity

  2. SmartTecO: Context-Based Ambient Sensing and Monitoring for Optimizing Energy Consumption

    E-Print Network [OSTI]

    Beigl, Michael

    SmartTecO: Context-Based Ambient Sensing and Monitoring for Optimizing Energy Consumption Yong Ding networks and a context awareness system, the acquired data will be interpreted into different energy the actuation mod- ule a certain context, which allows managing and saving the energy consumption of home

  3. Resource Management and Scheduling in WSNs Powered by Ambient Energy Harvesting

    E-Print Network [OSTI]

    Uysal-Biyikoglu, Elif

    Resource Management and Scheduling in WSNs Powered by Ambient Energy Harvesting Neyre Tekbiyik and characteristics [1], [14]: ocean water monitoring and bathymetry, avalanche rescue, object tracking, remote harvesting. Since industrial WSNs are expected to be deployed in harsh or inaccessible environments for long

  4. Wireless Sensor Networks Powered by Ambient Energy Harvesting (WSN-HEAP) Survey and

    E-Print Network [OSTI]

    Shihada, Basem

    Wireless Sensor Networks Powered by Ambient Energy Harvesting (WSN-HEAP) ­ Survey and Challenges networks (WSNs) research has pre- dominantly assumed the use of a portable and limited energy source, viz. batteries, to power sensors. Without energy, a sensor is essentially useless and cannot contribute

  5. Ambient induced degradation and chemically activated recovery in copper phthalocyanine thin film transistors

    E-Print Network [OSTI]

    Kummel, Andrew C.

    Ambient induced degradation and chemically activated recovery in copper phthalocyanine thin film 2009 The electrical degradation aging of copper phthalocyanine CuPc organic thin film transistors OTFTs layer.6,17,18 A systematic approach to iso- lating the cause of device degradation "aging" in copper

  6. Forensic Analysis of Illicit Drugs and Trace Explosives using Ambient Pressure

    E-Print Network [OSTI]

    Perkins, Richard A.

    for high throughput forensic analysis 3. Standard methods for evaluation of API sources #12;API-MS Surface and Microanalysis Science Division National Institute of Standards and Technology The Science and Technology of Standards and Technology #12;Forensic and Trace Contraband Detection Ambient Desorption and Ionization

  7. Design of an ambient aerosol sampling system for high and medium speed applications

    E-Print Network [OSTI]

    Irshad, Hammad

    2002-01-01T23:59:59.000Z

    Two ambient sampling systems were designed and tested for high speed sampling application for a wind speed range of 4.47 m/s to 26.82 m/s. These systems will be used as inlets for sampling of bioaerosol from air. These systems consist of shrouded...

  8. Economic and energetic analysis of capturing CO2 from ambient air

    E-Print Network [OSTI]

    Economic and energetic analysis of capturing CO2 from ambient air Kurt Zenz Housea,b,1 , Antonio C for review August 20, 2010) Capturing carbon dioxide from the atmosphere ("air capture") in an industrial suggest these air capture systems may cost a few hundred dollars per tonne of CO2, making it cost

  9. Ambient gas effects on the dynamics of laser-produced tin plume expansion

    E-Print Network [OSTI]

    Tillack, Mark

    Ambient gas effects on the dynamics of laser-produced tin plume expansion S. S. Harilal,a Beau O online 28 April 2006 Controlling the debris from a laser-generated tin plume is one of the prime issues radiation can be used for controlling highly energetic particles from the tin plume. We employed a partial

  10. Extended papers from NPAR 2010 Stylized ambient displays of digital media collections

    E-Print Network [OSTI]

    Collomosse, John

    Extended papers from NPAR 2010 Stylized ambient displays of digital media collections Tinghuai Wang collections of personal digital media. However, once captured, this media is infrequently accessed and often lies dormant on users' PCs. We present a system to breathe life into home digital media collections

  11. A Non-Intrusive Monitoring System for Ambient Assisted Living Service Delivery

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    A Non-Intrusive Monitoring System for Ambient Assisted Living Service Delivery Willy All : Italy (2012)" #12;2 A Non-Intrusive Monitoring System for AAL Service Delivery Previous works from [6 is intrusive, and the massive deployment of sensors in the environment which implies a significant financial

  12. Ambient-Processed Colloidal Quantum Dot Solar Cells via Individual Pre-Encapsulation of Nanoparticles

    E-Print Network [OSTI]

    Ambient-Processed Colloidal Quantum Dot Solar Cells via Individual Pre-Encapsulation, 2010; E-mail: ted.sargent@utoronto.ca Solution-processed solar cells employing colloidal quantum dots-junction and tandem solar cells both rely on IR-band-gap semiconductors, there has been much recent emphasis

  13. Ambient-RF-Energy-Harvesting Sensor Node with Capacitor-Leakage-Aware Duty Cycle Control

    E-Print Network [OSTI]

    Tentzeris, Manos

    shortage risk. (2) Adaptive optimal operation point tracking considering harvested energy variability. (3Ambient-RF-Energy-Harvesting Sensor Node with Capacitor-Leakage-Aware Duty Cycle Control Ryo-- In this paper, we present a software control method that maximizes the sensing rate of wireless sensor networks

  14. Ambient pressure process for preparing aerogel thin films reliquified sols useful in preparing aerogel thin films

    DOE Patents [OSTI]

    Brinker, Charles Jeffrey (Albuquerque, NM); Prakash, Sai Sivasankaran (Minneapolis, MN)

    1999-01-01T23:59:59.000Z

    A method for preparing aerogel thin films by an ambient-pressure, continuous process. The method of this invention obviates the use of an autoclave and is amenable to the formation of thin films by operations such as dip coating. The method is less energy intensive and less dangerous than conventional supercritical aerogel processing techniques.

  15. Characterization of ambient aerosol from measurements of cloud condensation nuclei during the 2003 Atmospheric Radiation

    E-Print Network [OSTI]

    of ambient aerosol from measurements of cloud condensation nuclei during the 2003 Atmospheric Radiation in aerosol radiative forcing is associated with the indirect effect, which results from the relationship would have two indirect effects on climate. Cloud albedo is greater for clouds with more numerous

  16. Hydrothermal metamorphism and low-temperature alteration on the Mid-Atlantic ridge

    E-Print Network [OSTI]

    Peron, Philippe Raymond

    1978-01-01T23:59:59.000Z

    occur to form hydrated rocks. Oxygen isotopic data from hydrothermally metamorphosed rocks show that hydrothermal fluids are derived from a low g 0 source such as sea- 18 water rather than the higher $0 source typical for mantle-derived water... inferred hydrothermal fluid vent sites. The style of alteration of these rocks ranges from weathering at ambient ocean floor temperatures to metamorphism at greenshist facies conditions, The alteration products associated with the weathered ba- salts...

  17. Thermoelectric Temperature Control

    E-Print Network [OSTI]

    Saffman, Mark

    NOTE 201TM TECHNICAL Optimizing Thermoelectric Temperature Control Systems #12;2 May 1995 92-040000A © 1995 Wavelength Electronics, Inc. Thermoelectric coolers (TECs) are used in a variety understanding of thermal management techniques and carefully select the thermoelectric module, temperature

  18. Understanding and controlling low-temperature aging of nanocrystalline materials.

    SciTech Connect (OSTI)

    Battaile, Corbett Chandler; Boyce, Brad Lee; Brons, Justin G.; Foiles, Stephen Martin; Hattar, Khalid Mikhiel; Holm, Elizabeth Ann; Padilla, Henry A.,; Sharon, John Anthony; Thompson, Gregory B.

    2013-10-01T23:59:59.000Z

    Nanocrystalline copper lms were created by both repetitive high-energy pulsed power, to produce material without internal nanotwins; and pulsed laser deposition, to produce nan- otwins. Samples of these lms were indented at ambient (298K) and cryogenic temperatures by immersion in liquid nitrogen (77K) and helium (4K). The indented samples were sectioned through the indented regions and imaged in a scanning electron microscope. Extensive grain growth was observed in the lms that contained nanotwins and were indented cryogenically. The lms that either lacked twins, or were indented under ambient conditions, were found to exhibit no substantial grain growth by visual inspection. Precession transmission elec- tron microscopy was used to con rm these ndings quantitatively, and show that 3 and 7 boundaries proliferate during grain growth, implying that these interface types play a key role in governing the extensive grain growth observed here. Molecular dynamics sim- ulations of the motion of individual grain boundaries demonstrate that speci c classes of boundaries - notably 3 and 7 - exhibit anti- or a-thermal migration, meaning that their mobilities either increase or do not change signi cantly with decreasing temperature. An in-situ cryogenic indentation capability was developed and implemented in a transmission electron microscope. Preliminary results do not show extensive cryogenic grain growth in indented copper lms. This discrepancy could arise from the signi cant di erences in con g- uration and loading of the specimen between the two approaches, and further research and development of this capability is needed.

  19. Diode-pumped Q-switched Nd{sup 3+} : YAG laser operating in a wide temperature range without thermal stabilisation of pump diodes

    SciTech Connect (OSTI)

    Vainshenker, A E; Vilenskiy, A V; Kazakov, A A; Lysoy, B G; Mikhailov, L K; Pashkov, V A [Open Joint-Stock Company 'M.F. Stel'makh Polyus Research and Development Institute', Moscow (Russian Federation)

    2013-02-28T23:59:59.000Z

    A model sample of a compact low-power-consumption Nd{sup 3+} : YAG laser emitting 20-mJ pulses with a pulse repetition rate up to 20 Hz (in cyclic duty) at a wavelength of 1064 nm is developed and studied. The laser is designed for operating at external temperatures from -40 to +50 deg C. This was achieved by using quasi-end diode pumping without thermal stabilisation of pump diodes. (laser optics 2012)

  20. Study of the effects of ambient conditions upon the performance of fan powered, infrared, natural gas burners. Quarterly technical progress report, October 1, 1996--December 31, 1996

    SciTech Connect (OSTI)

    Bai, T.

    1997-01-01T23:59:59.000Z

    This quarterly technical progress report describes work performed under DOE Grant No. DE-FG22-94MT94011 during the period September 1, 1996 to December 31, 1996 which covers the nineth quarter of the project. The objective of this investigation is to characterize the operation of a fan powered infrared burner (IR burner) at various gas compositions and ambient conditions and develop design guidelines for appliances containing PIR burners for satisfactory performance. The fan powered infrared burner is a technology introduced more recently in the residential and commercial markets. It is a surface combustor that elevates the temperature of the burner head to a radiant condition. A variety of metallic and ceramic materials are used for the burner heads. It has been demonstrated that infrared burners produce low CO and NO{sub x} emissions in a controlled geometric space. As the environmental regulations become more stringent, infrared burners are receiving increasing interests.

  1. Finite Temperature Effective Actions

    E-Print Network [OSTI]

    Ashok Das; J. Frenkel

    2009-08-27T23:59:59.000Z

    We present, from first principles, a direct method for evaluating the exact fermion propagator in the presence of a general background field at finite temperature, which can be used to determine the finite temperature effective action for the system. As applications, we determine the complete one loop finite temperature effective actions for 0+1 dimensional QED as well as the Schwinger model. These effective actions, which are derived in the real time (closed time path) formalism, generate systematically all the Feynman amplitudes calculated in thermal perturbation theory and also show that the retarded (advanced) amplitudes vanish in these theories.

  2. Investigating Low Temperature Properties of Rubber Seals - 13020

    SciTech Connect (OSTI)

    Jaunich, M.; Wolff, D.; Stark, W. [BAM Federal Institute for Materials Research and Testing, Unter den Eichen 87, 12203 Berlin (Germany)] [BAM Federal Institute for Materials Research and Testing, Unter den Eichen 87, 12203 Berlin (Germany)

    2013-07-01T23:59:59.000Z

    To achieve the required tightness levels of containers for low and intermediate level radioactive wastes rubbers are widely applied as main sealing materials. The save encapsulation of the radioactive container contents has to be guaranteed according to legislation and appropriate guidelines for long storage periods as well as down to temperatures of -40 deg. C during transportation. Therefore the understanding of failure mechanisms that lead to leakage at low temperatures is of high importance. It is known that the material properties of rubbers are strongly influenced by temperature. At low temperatures this is caused by the rubber-glass transition (abbr. glass transition). During continuous cooling the material changes from rubber-like entropy-elastic to stiff energy-elastic behaviour, that allows nearly no strain or retraction. Therefore, rubbers are normally used above their glass transition but the minimum working temperature limit is not defined precisely, what can cause problems during application. The temperature range where full functionality is possible is strongly dependent on the application conditions and the material. For this investigation mainly ethylene propylene diene (EPDM) and fluorocarbon rubbers (FKM) were selected as they are often used for radioactive waste containers. Differential Scanning Calorimetry (DSC) and Dynamic Mechanical Analysis (DMA) are typically used for the determination of the temperature range of the glass transition process. The standardized compression set measurement according to ISO 815 is common for investigation of rubber sealing materials as the test simulates the seal behaviour after release. To reduce the test time of the standard tests a faster technique giving the same information was developed. Additionally, the breakdown temperature of the sealing function of complete O-ring seals is measured in a component test setup to compare it with the results of the other tests. The experimental setup is capable of measuring the leakage rate at low temperatures by the pressure rise method. A model was developed that allows calculating the minimum working temperature limit of a seal by combining the results of the applied methods. (authors)

  3. High-Temperature Superconductivity

    ScienceCinema (OSTI)

    Peter Johnson

    2010-01-08T23:59:59.000Z

    Like astronomers tweaking images to gain a more detailed glimpse of distant stars, physicists at Brookhaven National Laboratory have found ways to sharpen images of the energy spectra in high-temperature superconductors ? materials that carry electrical c

  4. Penrose Well Temperatures

    SciTech Connect (OSTI)

    Christopherson, Karen

    2013-03-15T23:59:59.000Z

    Penrose Well Temperatures Geothermal waters have been encountered in several wells near Penrose in Fremont County, Colorado. Most of the wells were drilled for oil and gas exploration and, in a few cases, production. This ESRI point shapefile utilizes data from 95 wells in and around the Penrose area provided by the Colorado Oil and Gas Conservation Commission (COGCC) database at http://cogcc.state.co.us/ . Temperature data from the database were used to calculate a temperature gradient for each well. This information was then used to estimate temperatures at various depths. Projection: UTM Zone 13 NAD27 Extent: West -105.224871 East -105.027633 North 38.486269 South 38.259507 Originators: Colorado Oil and Gas Conservation Commission (COGCC) Karen Christopherson

  5. Low temperature cryoprobe

    DOE Patents [OSTI]

    Sungaila, Z.F.

    1988-04-12T23:59:59.000Z

    A portable, hand held probe usable within a small confine to produce a point source of nitrogen or helium at a relatively constant temperatures of 77 degrees Kelvin, is discussed. 3 figs.

  6. Temperature in the Throat

    E-Print Network [OSTI]

    Dariush Kaviani; Amir Esmaeil Mosaffa

    2015-03-06T23:59:59.000Z

    We study the temperature of extended objects in string theory. Rotating D-branes in warped Calabi-Yau throats have induced metrics with thermal horizons and Hawking temperatures a la Unruh effect. We solve the equations of motion for slow rotating probe branes and derive their induced metrics in the UV/IR solutions of warped conifold throats. Our analysis shows that horizons and temperatures of expected features form on the world volume of the rotating probe brane in terms of conserved charges in the UV solutions of the conifold throat. In certain limits, we find world volume horizons and temperatures of the form similar to those of rotating probes in the AdS throat.

  7. High temperature pressure gauge

    DOE Patents [OSTI]

    Echtler, J. Paul (Pittsburgh, PA); Scandrol, Roy O. (Library, PA)

    1981-01-01T23:59:59.000Z

    A high temperature pressure gauge comprising a pressure gauge positioned in fluid communication with one end of a conduit which has a diaphragm mounted in its other end. The conduit is filled with a low melting metal alloy above the diaphragm for a portion of its length with a high temperature fluid being positioned in the remaining length of the conduit and in the pressure gauge.

  8. Temperature measuring device

    DOE Patents [OSTI]

    Lauf, Robert J. (Oak Ridge, TN); Bible, Don W. (Clinton, TN); Sohns, Carl W. (Oak Ridge, TN)

    1999-01-01T23:59:59.000Z

    Systems and methods are described for a wireless instrumented silicon wafer that can measure temperatures at various points and transmit those temperature readings to an external receiver. The device has particular utility in the processing of semiconductor wafers, where it can be used to map thermal uniformity on hot plates, cold plates, spin bowl chucks, etc. without the inconvenience of wires or the inevitable thermal perturbations attendant with them.

  9. Effect of NH{sub 3} on the low pressure chemical vapor deposition of TiO{sub 2} film at low temperature using tetrakis(diethylamino)titanium and oxygen

    SciTech Connect (OSTI)

    Song Xuemei; Takoudis, Christos G. [Department of Chemical Engineering, University of Illinois at Chicago, Chicago, Illinois 60607 (United States); Department of Chemical Engineering, University of Illinois at Chicago, Chicago, Illinois 60607 and Department of Bioengineering, University of Illinois at Chicago, Chicago, Illinois 60607 (United States)

    2007-03-15T23:59:59.000Z

    The effect of NH{sub 3} on TiO{sub 2} film deposition using tetrakis(diethylamino)titanium (TDEAT) and O{sub 2} as source gases in a low pressure chemical vapor deposition reactor was studied at low temperatures ranging from 100 to 250 deg. C. TiO{sub 2} film is traditionally deposited at temperature above 300 deg. C using oxygen-based Ti precursors, such as titanium tetraisopropoxide. In this study, the authors demonstrate that a combination of both reactive precursors, i.e., TDEAT and NH{sub 3}, is an effective technique for TiO{sub 2} film deposition at lower temperatures, albeit with some nitrogen incorporation. It was found that films can be formed at temperatures as low as 100 deg. C when NH{sub 3} is used. At higher temperatures, the growth rate of TiO{sub 2} films deposited using NH{sub 3} is higher than that of films deposited without NH{sub 3} by up to one order of magnitude. X-ray photoelectron spectroscopy data show that NH{sub 3} enhances the formation of TiNO and TiN, and x-ray diffraction analysis shows that all as-deposited films have amorphous structure. Both x-ray photoelectron spectroscopy and secondary ion mass spectroscopy depth profiles show that nitrogen, carbon, and oxygen are uniformly distributed throughout the film. The mechanism of enhancement of growth rate using NH{sub 3} is also discussed.

  10. High-temperature, structural disorder, phase transitions, and piezoelectric properties of GaPO{sub 4}

    SciTech Connect (OSTI)

    Haines, J.; Cambon, O.; Prudhomme, N.; Fraysse, G.; Keen, D. A.; Chapon, L. C.; Tucker, M. G. [Laboratoire de Physico-Chimie de la Matiere Condensee, UMR CNRS 5617, Universite Montpellier II, Place Eugene Bataillon, cc003, 34095 Montpellier cedex 5 (France); Department of Physics, Oxford University, Clarendon Laboratory, Parks Road, Oxford OX1 3PU (United Kingdom); and ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11 0QX (United Kingdom); ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11 0QX (United Kingdom); Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge CB2 3EQ (United Kingdom)

    2006-01-01T23:59:59.000Z

    Gallium orthophosphate was studied at high temperature up to 1303 K by total neutron scattering and 1173 K by piezoelectric measurements. Rietveld refinements at 1223 K confirm the stability of the structural distortion in the {alpha}-quartz-type phase with an average tilt angle {delta}=18.8 deg. at this temperature. In contrast, reverse Monte Carlo (RMC) refinements of total neutron scattering data indicate that, whereas the degree of structural disorder initially slowly varies over a very large temperature interval in the {alpha}-quartz-type phase, an increase in disorder is observed beginning above 1023 K. Piezoelectric measurements indicate that the quality factor (Q) of GaPO{sub 4} resonators remains stable up to this temperature above which the piezoelectric properties of the material degrade. This degradation can be correlated to the increase in structural disorder. RMC refinements indicate that the high-temperature {beta}-cristobalite-type phase at 1303 K is characterized by significant thermally induced disorder with oxygen atom density forming a continuous ring around the vector joining neighboring gallium and phosphorous atoms. Gallium phosphate may be expected to retain its piezoelectric properties up to within 200 K of the phase transition temperature and as a consequence be used in applications at temperatures slightly above 1000 K.

  11. Characterization Testing of H20-SO2 Electrolyzer at Ambient Pressure

    SciTech Connect (OSTI)

    Steimke, J

    2005-07-29T23:59:59.000Z

    This document reports work performed at the Savannah River National Laboratory (SRNL) that resulted in a major accomplishment by demonstrating the proof-of-concept of the use of a proton exchange membrane or PEM-type electrochemical cell to produce hydrogen via SO{sub 2}-depolarized water electrolysis. For the first time sulfur dioxide dissolved in liquid sulfuric acid was used to depolarize water electrolysis in a modern PEM cell. The use of such a cell represents a major step in achieving the ultimate goal of an economical hydrogen production process based on the Hybrid Sulfur (HyS) Cycle. The HyS Process is a hybrid thermochemical cycle that may be used in conjunction with advanced nuclear reactors or centralized solar receivers to produce hydrogen by water-splitting. Like all other sulfur-based cycles, HyS utilizes the high temperature thermal decomposition of sulfuric acid to produce oxygen. The unique aspect of HyS is the generation of hydrogen in a water electrolyzer that is operated under conditions where dissolved sulfur dioxide depolarizes the anodic reaction, resulting in substantial voltage reduction. Sulfur dioxide is oxidized at the anode, producing sulfuric acid, that is sent to the acid decomposition portion of the cycle. The focus of this work was to conduct single cell electrolyzer tests in order to prove the concept of SO{sub 2}-depolarization and to determine how the results can be used to evaluate the performance of key components of the HyS Process. A test facility for conducting SO{sub 2}-depolarized electrolyzer (SDE) testing was designed, constructed and commissioned. The maximum cell current is 50 amperes, which is equivalent to a hydrogen production rate of approximately 20 liters per hour. The test facility was designed for operation at room temperature with pressures up to 2 bar. Feed to the anode of the electrolyzer can be water, sulfuric acid of various concentrations, or sulfuric acid containing dissolved sulfur dioxide. Provisions are included to allow variation of the operating pressure in the range of 1 to 2 bar. Hydrogen generated at the cathode of the cell can be collected for the purpose of flow measurement and composition analysis. The test facility proved to be easy to operate, versatile, and reliable. Two slightly different SDE's were designed, procured and tested. The first electrolyzer was based on a commercially available PEM water electrolyzer manufactured by Proton Energy Systems, Inc. (PES). The PES electrolyzer was built with Hastelloy B and Teflon wetted parts, a PEM electrolyte, and porous titanium electrodes. The second electrolyzer was assembled for SRNL by the University of South Carolina (USC). It was constructed with platinized carbon cloth electrodes, a Nafion 115 PEM electrolyte, carbon paper flow fields, and solid graphite back plates. Proof-of-concept testing was performed on each electrolyzer at near-ambient pressure and room temperature under various feed conditions. SDE operation was evidenced by hydrogen production at the cathode and sulfuric acid production at the anode (witnessed by the absence of oxygen generation) and with cell voltages substantially less than the theoretical reversible voltage for simple water electrolysis (1.23 V). Cell performance at low currents equaled or exceeded that achieved in the two-compartment cells built by Westinghouse Electric Corporation during the original development of the HyS Process. Performance at higher currents was less efficient due to mass transfer and hydraulic issues associated with the use of cells not optimized for liquid feed. Test results were analyzed to determine performance trends, improvement needs, and long-term SDE potential. The PES cell failed after several days of operation due to internal corrosion of the titanium electrodes in the presence of sulfuric acid. Although it was anticipated that the titanium would react in the presence of acid, the rapid deterioration of the electrodes was unexpected. The USC cell was constructed of carbon-based components and had excellent corrosion resistance. Howeve

  12. Temperature initiated passive cooling system

    DOE Patents [OSTI]

    Forsberg, C.W.

    1994-11-01T23:59:59.000Z

    A passive cooling system for cooling an enclosure only when the enclosure temperature exceeds a maximum standby temperature comprises a passive heat transfer loop containing heat transfer fluid having a particular thermodynamic critical point temperature just above the maximum standby temperature. An upper portion of the heat transfer loop is insulated to prevent two phase operation below the maximum standby temperature. 1 fig.

  13. Temperature initiated passive cooling system

    DOE Patents [OSTI]

    Forsberg, Charles W. (Oak Ridge, TN)

    1994-01-01T23:59:59.000Z

    A passive cooling system for cooling an enclosure only when the enclosure temperature exceeds a maximum standby temperature comprises a passive heat transfer loop containing heat transfer fluid having a particular thermodynamic critical point temperature just above the maximum standby temperature. An upper portion of the heat transfer loop is insulated to prevent two phase operation below the maximum standby temperature.

  14. Sources and levels of ambient ocean sound near the antarctic peninsula

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

    Dziak, Robert P. [Oregon State Univ./Cooperative Inst. for Marine Resources Studies/National Oceanic and Atmospheric Administration (NOAA)/Pacific Marine Environmental Lab., Newport, OR (United States); Bohnenstiehl, DelWayne R. [North Carolina State Univ., Raleigh, NC (United States). Dept. of Marine, Earth, and Atmospheric Sciences.; Stafford, Kathleen M. [Univ. of Washington, Seattle, WA (United States). Applied Physics Lab.; Matsumoto, Haruyoshi [Oregon State Univ./Cooperative Inst. for Marine Resources Studies/National Oceanic and Atmospheric Administration (NOAA)/Pacific Marine Environmental Lab., Newport, OR (United States); Park, Minkyu [Korea Polar Research Inst., Incheon (Korea, Republic of). Polar Environmental Research Div.; Lee, Won Sang [Korea Polar Research Inst., Incheon (Korea, Republic of). Polar Environmental Research Div.; Fowler, Matt J. [Oregon State Univ./Cooperative Inst. for Marine Resources Studies/National Oceanic and Atmospheric Administration (NOAA)/Pacific Marine Environmental Lab., Newport, OR (United States); Lau, Tai-Kwan [Oregon State Univ./Cooperative Inst. for Marine Resources Studies/National Oceanic and Atmospheric Administration (NOAA)/Pacific Marine Environmental Lab., Newport, OR (United States); Haxel, Joseph H. [Oregon State Univ./Cooperative Inst. for Marine Resources Studies/National Oceanic and Atmospheric Administration (NOAA)/Pacific Marine Environmental Lab., Newport, OR (United States); Mellinger, David K. [Oregon State Univ./Cooperative Inst. for Marine Resources Studies/National Oceanic and Atmospheric Administration (NOAA)/Pacific Marine Environmental Lab., Newport, OR (United States); Fine, Michael L [Virginia Commonwealth Univ., Richmond, VA (United States)

    2015-04-14T23:59:59.000Z

    Arrays of hydrophones were deployed within the Bransfield Strait and Scotia Sea (Antarctic Peninsula region) from 2005 to 2009 to record ambient ocean sound at frequencies of up to 125 and 500 Hz. Icequakes, which are broadband, short duration signals derived from fracturing of large free-floating icebergs, are a prominent feature of the ocean soundscape. Icequake activity peaks during austral summer and is minimum during winter, likely following freeze-thaw cycles. Iceberg grounding and rapid disintegration also releases significant acoustic energy, equivalent to large-scale geophysical events. Overall ambient sound levels can be as much as ~10–20 dB higher in the open, deep ocean of the Scotia Sea compared to the relatively shallow Bransfield Strait. Noise levels become lowest during the austral winter, as sea-ice cover suppresses wind and wave noise. Ambient noise levels are highest during austral spring and summer, as surface noise, ice cracking and biological activity intensifies. Vocalizations of blue (Balaenoptera musculus) and fin (B. physalus) whales also dominate the long-term spectra records in the 15–28 and 89 Hz bands. Blue whale call energy is a maximum during austral summer-fall in the Drake Passage and Bransfield Strait when ambient noise levels are a maximum and sea-ice cover is a minimum. Fin whale vocalizations were also most common during austral summer-early fall months in both the Bransfield Strait and Scotia Sea. The hydrophone data overall do not show sustained anthropogenic sources (ships and airguns), likely due to low coastal traffic and the typically rough weather and sea conditions of the Southern Ocean.

  15. Ambient aerosol sampling inlet for flow rates of 100 and 400 l/min

    E-Print Network [OSTI]

    Baehl, Michael Matthew

    2009-05-15T23:59:59.000Z

    tunnel, where three different speeds were employed; namely 2, 8, and 24 km/hr. The aerosol particles used in these tests were generated from ethanol dilutions of a master solution containing 90% ethanol, 9% oleic acid and 1% sodium fluorescein... AMBIENT AEROSOL SAMPLING INLET FOR FLOW RATES OF 100 AND 400 L/MIN A Thesis by MICHAEL MATTHEW BAEHL Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment...

  16. The photosynthesis - leaf nitrogen relationship at ambient and elevated atmospheric carbon dioxide: a meta-analysis

    SciTech Connect (OSTI)

    Andrew G. Peterson; J. Timothy Ball; Yiqi Luo; Christopher B. Field; Peter B. Reich; Peter S. Curtis; Kevin L. Griffin; Carla S Gunderson; Richard J. Norby; David T. Tissue; Manfred Forstreuter; Ana Rey; Christoph S. Vogel; CMEAL collaboration

    1998-09-25T23:59:59.000Z

    Estimation of leaf photosynthetic rate (A) from leaf nitrogen content (N) is both conceptually and numerically important in models of plant, ecosystem and biosphere responses to global change. The relationship between A and N has been studied extensively at ambient CO{sub 2} but much less at elevated CO{sub 2}. This study was designed to (1) assess whether the A-N relationship was more similar for species within than between community and vegetation types, and (2) examine how growth at elevated CO{sub 2} affects the A-N relationship. Data were obtained for 39 C{sub 3} species grown at ambient CO{sub 2} and 10 C{sub 3} species grown at ambient and elevated CO{sub 2}. A regression model was applied to each species as well as to species pooled within different community and vegetation types. Cluster analysis of the regression coefficients indicated that species measured at ambient CO{sub 2} did not separate into distinct groups matching community or vegetation type. Instead, most community and vegetation types shared the same general parameter space for regression coefficients. Growth at elevated CO{sub 2} increased photosynthetic nitrogen use efficiency for pines and deciduous trees. When species were pooled by vegetation type, the A-N relationship for deciduous trees expressed on a leaf-mass bask was not altered by elevated CO{sub 2}, while the intercept increased for pines. When regression coefficients were averaged to give mean responses for different vegetation types, elevated CO{sub 2} increased the intercept and the slope for deciduous trees but increased only the intercept for pines. There were no statistical differences between the pines and deciduous trees for the effect of CO{sub 2}. Generalizations about the effect of elevated CO{sub 2} on the A-N relationship, and differences between pines and deciduous trees will be enhanced as more data become available.

  17. Sources and levels of ambient ocean sound near the antarctic peninsula

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

    Dziak, Robert P.; Bohnenstiehl, DelWayne R.; Stafford, Kathleen M.; Matsumoto, Haruyoshi; Park, Minkyu; Lee, Won Sang; Fowler, Matt J.; Lau, Tai-Kwan; Haxel, Joseph H.; Mellinger, David K.; et al

    2015-04-14T23:59:59.000Z

    Arrays of hydrophones were deployed within the Bransfield Strait and Scotia Sea (Antarctic Peninsula region) from 2005 to 2009 to record ambient ocean sound at frequencies of up to 125 and 500 Hz. Icequakes, which are broadband, short duration signals derived from fracturing of large free-floating icebergs, are a prominent feature of the ocean soundscape. Icequake activity peaks during austral summer and is minimum during winter, likely following freeze-thaw cycles. Iceberg grounding and rapid disintegration also releases significant acoustic energy, equivalent to large-scale geophysical events. Overall ambient sound levels can be as much as ~10–20 dB higher in the open,more »deep ocean of the Scotia Sea compared to the relatively shallow Bransfield Strait. Noise levels become lowest during the austral winter, as sea-ice cover suppresses wind and wave noise. Ambient noise levels are highest during austral spring and summer, as surface noise, ice cracking and biological activity intensifies. Vocalizations of blue (Balaenoptera musculus) and fin (B. physalus) whales also dominate the long-term spectra records in the 15–28 and 89 Hz bands. Blue whale call energy is a maximum during austral summer-fall in the Drake Passage and Bransfield Strait when ambient noise levels are a maximum and sea-ice cover is a minimum. Fin whale vocalizations were also most common during austral summer-early fall months in both the Bransfield Strait and Scotia Sea. The hydrophone data overall do not show sustained anthropogenic sources (ships and airguns), likely due to low coastal traffic and the typically rough weather and sea conditions of the Southern Ocean.« less

  18. Operation of a Joint Utility/Industry Ambient Air Monitoring Program in the Houston Area 

    E-Print Network [OSTI]

    Kush, J. A.

    1991-01-01T23:59:59.000Z

    of Commerce or any other business or industrial organization. HRM's officers and directors are employees of its participating companies. HRM does not have any paid employees it contracts for all necessary services. Radian Corporation has been contracted... participating companies. HRM does not have any paid employees it contracts for 119 all necessary services. Radian Corporation has been contracted for the ambient air monitoring and special studies for all phases of HRM thus far. All participating companies...

  19. Temperature Data Evaluation

    SciTech Connect (OSTI)

    Gillespie, David

    2003-03-01T23:59:59.000Z

    Groundwater temperature is sensitive to the competing processes of heat flow from below the advective transport of heat by groundwater flow. Because groundwater temperature is sensitive to conductive and advective processes, groundwater temperature may be utilized as a tracer to further constrain the uncertainty of predictions of advective radionuclide transport models constructed for the Nevada Test Site (NTS). Since heat transport, geochemical, and hydrologic models for a given area must all be consistent, uncertainty can be reduced by devaluing the weight of those models that do not match estimated heat flow. The objective of this study was to identify the quantity and quality of available heat flow data at the NTS. One-hundred-forty-five temperature logs from 63 boreholes were examined. Thirteen were found to have temperature profiles suitable for the determination of heat flow values from one or more intervals within the boreholes. If sufficient spatially distributed heat flow values are obtained, a heat transport model coupled to a hydrologic model may be used to reduce the uncertainty of a nonisothermal hydrologic model of the NTS.

  20. High temperature thermometric phosphors

    DOE Patents [OSTI]

    Allison, Stephen W. (Knoxville, TN); Cates, Michael R. (Oak Ridge, TN); Boatner, Lynn A. (Oak Ridge, TN); Gillies, George T. (Earlysville, VA)

    1999-03-23T23:59:59.000Z

    A high temperature phosphor consists essentially of a material having the general formula LuPO.sub.4 :Dy.sub.(x),Eu.sub.y) wherein: 0.1 wt %.ltoreq.x.ltoreq.20 wt % and 0.1 wt %.ltoreq.y.ltoreq.20 wt %. The high temperature phosphor is in contact with an article whose temperature is to be determined. The article having the phosphor in contact with it is placed in the environment for which the temperature of the article is to be determined. The phosphor is excited by a laser causing the phosphor to fluoresce. The emission from the phosphor is optically focused into a beam-splitting mirror which separates the emission into two separate emissions, the emission caused by the dysprosium dopant and the emission caused by the europium dopent. The separated emissions are optically filtered and the intensities of the emission are detected and measured. The ratio of the intensity of each emission is determined and the temperature of the article is calculated from the ratio of the intensities of the separate emissions.

  1. High temperature thermometric phosphors

    DOE Patents [OSTI]

    Allison, S.W.; Cates, M.R.; Boatner, L.A.; Gillies, G.T.

    1999-03-23T23:59:59.000Z

    A high temperature phosphor consists essentially of a material having the general formula LuPO{sub 4}:Dy{sub x},Eu{sub y} wherein: 0.1 wt % {<=} x {<=} 20 wt % and 0.1 wt % {<=} y {<=} 20 wt %. The high temperature phosphor is in contact with an article whose temperature is to be determined. The article having the phosphor in contact with it is placed in the environment for which the temperature of the article is to be determined. The phosphor is excited by a laser causing the phosphor to fluoresce. The emission from the phosphor is optically focused into a beam-splitting mirror which separates the emission into two separate emissions, the emission caused by the dysprosium dopant and the emission caused by the europium dopant. The separated emissions are optically filtered and the intensities of the emission are detected and measured. The ratio of the intensity of each emission is determined and the temperature of the article is calculated from the ratio of the intensities of the separate emissions. 2 figs.

  2. High-temperature Pump Monitoring - High-temperature ESP Monitoring...

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

    7 4.4.4 High-temperature Pump Monitoring - High-temperature ESP Monitoring Presentation Number: 018 Investigator: Dhruva, Brindesh (Schlumberger Technology Corp.) Objectives: To...

  3. High temperature adsorption measurements

    SciTech Connect (OSTI)

    Bertani, R.; Parisi, L.; Perini, R.; Tarquini, B.

    1996-01-24T23:59:59.000Z

    Adsorption phenomena are a rich and rather new field of study in geothermal research, in particular at very high temperature. ENEL is interested in the exploitation of geothermal regions with superheated steam, and it is important to understand the behavior of water-rock interaction. We have analyzed in the 170-200 °C temperature range four samples of Monteverdi cuttings; the next experimental effort will be at 220 °C and over in 1996. The first results of the 1995 runs are collected in this paper. We can highlight four main items: 1. At relative pressures over 0.6 the capillarity forces are very important. 2. There is no significant temperature effect. 3. Adsorbed water can be present, and it is able to multiply by a factor of 15 the estimated reserve of super-heated steam only. 4. Pores smaller than 15 Å do not contribute to the adsorbed mass.

  4. Temperature profile detector

    DOE Patents [OSTI]

    Tokarz, Richard D. (West Richland, WA)

    1983-01-01T23:59:59.000Z

    A temperature profile detector shown as a tubular enclosure surrounding an elongated electrical conductor having a plurality of meltable conductive segments surrounding it. Duplicative meltable segments are spaced apart from one another along the length of the enclosure. Electrical insulators surround these elements to confine molten material from the segments in bridging contact between the conductor and a second electrical conductor, which might be the confining tube. The location and rate of growth of the resulting short circuits between the two conductors can be monitored by measuring changes in electrical resistance between terminals at both ends of the two conductors. Additional conductors and separate sets of meltable segments operational at differing temperatures can be monitored simultaneously for measuring different temperature profiles.

  5. Temperature profile detector

    DOE Patents [OSTI]

    Tokarz, R.D.

    1983-10-11T23:59:59.000Z

    Disclosed is a temperature profile detector shown as a tubular enclosure surrounding an elongated electrical conductor having a plurality of meltable conductive segments surrounding it. Duplicative meltable segments are spaced apart from one another along the length of the enclosure. Electrical insulators surround these elements to confine molten material from the segments in bridging contact between the conductor and a second electrical conductor, which might be the confining tube. The location and rate of growth of the resulting short circuits between the two conductors can be monitored by measuring changes in electrical resistance between terminals at both ends of the two conductors. Additional conductors and separate sets of meltable segments operational at differing temperatures can be monitored simultaneously for measuring different temperature profiles. 8 figs.

  6. An alternative solid-state method to prepare pyrochlore-free KTaO{sub 3} at low temperature

    SciTech Connect (OSTI)

    Su Tingting [School of Chemistry and Materials Science, Liaoning Shihua University, Fushun 113001 (China); Jiang Heng, E-mail: hjiang78@hotmail.com [School of Chemistry and Materials Science, Liaoning Shihua University, Fushun 113001 (China); Gong Hong [School of Chemistry and Materials Science, Liaoning Shihua University, Fushun 113001 (China)

    2011-09-15T23:59:59.000Z

    Perovskite-type KTaO{sub 3} powder was synthesized by an alternative solid-state method at low temperature. Stoichiometric ammonium tantalum hydroxide, K{sub 2}C{sub 2}O{sub 4} and KF were mixed in water and then dried at room temperature. The crude product was formed by calcining the dried mixture at different temperatures. Pyrochlore-free KTaO{sub 3} powder was successfully synthesized after treating the crude product with water. KF plays an important role to inhibit the formation of pyrochlore K{sub 2}Ta{sub 2}O{sub 6} during the calcination process of ammonium tantalum hydroxide/K{sub 2}C{sub 2}O{sub 4}/KF mixture. X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier-transform infrared (FTIR) spectroscopy, UV-vis diffuse reflectance (UV-vis) spectroscopy and thermogravimetric (TG) analysis were used to characterize the precursor compound and as-prepared samples. XRD results show that pyrochlore-free KTaO{sub 3} powder can be obtained at 600 deg. C. SEM results reveal that the as-prepared products are agglomerated and each of the agglomerations consists of many small grains with 10-30 nm in diameter. - Graphical abstract: Pyrochlore-free KTaO{sub 3} powder was prepared at 600 deg. C using tantalum hydroxide/K{sub 2}C{sub 2}O{sub 4}/KF raw materials. Pyrochlore K{sub 2}Ta{sub 2}O{sub 6} and perovskite KTaO{sub 3} coexist at 600 deg. C using tantalum hydroxide/K{sub 2}C{sub 2}O{sub 4} raw materials. Highlights: > In-situ degradation of TaO{sub x}(OH){sub 5-x}(NH{sub 4}){sub x}, K{sub 2}C{sub 2}O{sub 4} and KF promotes the reaction. > Synthesis of KTaO{sub 3} displayed a two-step reaction path with the intermediate formation of K{sub 2}TaO{sub 3}F. > Formation of intermediate K{sub 2}TaO{sub 3}F benefits to prepare pyrochlore-free KTaO{sub 3} at low temperature. > Pyrochlore-free KTaO{sub 3} is prepared at 600 deg. C, which is the lowest temperature reported so far by hard chemistry method. > Synthetic method is a facile, rapid, low price and environment friendly route.

  7. Temperature determination using pyrometry

    DOE Patents [OSTI]

    Breiland, William G. (Albuquerque, NM); Gurary, Alexander I. (Bridgewater, NJ); Boguslavskiy, Vadim (Princeton, NJ)

    2002-01-01T23:59:59.000Z

    A method for determining the temperature of a surface upon which a coating is grown using optical pyrometry by correcting Kirchhoff's law for errors in the emissivity or reflectance measurements associated with the growth of the coating and subsequent changes in the surface thermal emission and heat transfer characteristics. By a calibration process that can be carried out in situ in the chamber where the coating process occurs, an error calibration parameter can be determined that allows more precise determination of the temperature of the surface using optical pyrometry systems. The calibration process needs only to be carried out when the physical characteristics of the coating chamber change.

  8. Fluorescent temperature sensor

    DOE Patents [OSTI]

    Baker, Gary A [Los Alamos, NM; Baker, Sheila N [Los Alamos, NM; McCleskey, T Mark [Los Alamos, NM

    2009-03-03T23:59:59.000Z

    The present invention is a fluorescent temperature sensor or optical thermometer. The sensor includes a solution of 1,3-bis(1-pyrenyl)propane within a 1-butyl-1-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide ionic liquid solvent. The 1,3-bis(1-pyrenyl)propane remains unassociated when in the ground state while in solution. When subjected to UV light, an excited state is produced that exists in equilibrium with an excimer. The position of the equilibrium between the two excited states is temperature dependent.

  9. Polymer nanocomposites for high-temperature composite repair

    SciTech Connect (OSTI)

    Sheng, Xia

    2008-12-01T23:59:59.000Z

    A novel repair agent for resin-injection repair of advanced high temperature composites was developed and characterized. The repair agent was based on bisphenol E cyanate ester (BECy) and reinforced with alumina nanoparticles. To ensure good dispersion and compatibility with the BECy matrix in nanocomposites, the alumina nanoparticles were functionalized with silanes. The BECy nanocomposites, containing bare and functionalized alumina nanoparticles, were prepared and evaluated for their thermal, mechanical, rheological, and viscoelastic properties. The monomer of BECy has an extremely low viscosity at ambient temperature, which is good for processability. The cured BECy polymer is a highly cross-linked network with excellent thermal mechanical properties, with a high glass transition temperature (T{sub g}) of 270 C and decomposition temperature above 350 C. The incorporation of alumina nanoparticles enhances the mechanical and rheological properties of the BECy nanocomposites. Additionally, the alumina nanoparticles are shown to catalyze the cure of BECy. Characterization of the nanocomposites included dynamic mechanical analysis, differential scanning calorimetry, thermogravimetric analysis, rheological and rheokinetic evaluation, and transmission electron microscopy. The experimental results show that the BECy nanocomposite is a good candidate as repair agent for resin-injection repair applications.

  10. Observation of neutral sulfuric acid-amine containing clusters in laboratory and ambient measurements

    SciTech Connect (OSTI)

    Kuang C.; Zhao, J.; Smith, J. N.; Eisele, F. L.; Chen, M.; McMurry, P. H.

    2011-11-02T23:59:59.000Z

    Recent ab initio calculations showed that amines can enhance atmospheric sulfuric acid-water nucleation more effectively than ammonia, and this prediction has been substantiated in laboratory measurements. Laboratory studies have also shown that amines can effectively displace ammonia in several types of ammonium clusters. However, the roles of amines in cluster formation and growth at a microscopic molecular scale (from molecular sizes up to 2 nm) have not yet been well understood. Processes that must be understood include the incorporation of amines into sulfuric acid clusters and the formation of organic salts in freshly nucleated particles, which contributes significantly to particle growth rates. We report the first laboratory and ambient measurements of neutral sulfuric acid-amine clusters using the Cluster CIMS, a recently-developed mass spectrometer designed for measuring neutral clusters formed in the atmosphere during nucleation. An experimental technique, which we refer to as Semi-Ambient Signal Amplification (SASA), was employed. Sulfuric acid was added to ambient air, and the concentrations and composition of clusters in this mixture were analyzed by the Cluster CIMS. This experimental approach led to significantly higher cluster concentrations than are normally found in ambient air, thereby increasing signal-to-noise levels and allowing us to study reactions between gas phase species in ambient air and sulfuric acid containing clusters. Mass peaks corresponding to clusters containing four H{sub 2}SO{sub 4} molecules and one amine molecule were clearly observed, with the most abundant sulfuric acid-amine clusters being those containing a C2- or C4-amine (i.e. amines with masses of 45 and 73 amu). Evidence for C3- and C5-amines (i.e. amines with masses of 59 and 87 amu) was also found, but their correlation with sulfuric acid tetramer was not as strong as was observed for the C2- and C4-amines. The formation mechanisms for those sulfuric acid-amine clusters were investigated by varying the residence time in the inlet. It was concluded that the amines react directly with neutral clusters and that ion-induced clustering of sulfuric acid cluster ions with amines was not a dominant process. Results from ambient measurements using the Cluster CIMS without addition of sulfuric acid have shown that the sulfuric acid-amine clusters were reasonably well correlated with sulfuric acid tetramer and consistent with the SASA experiments at the same Boulder sampling site. Also, clusters that contain C2- or C4-amines were more abundant and better correlated with sulfuric acid tetramer than other types of amine containing clusters. However, ambient measurements of sulfuric acid-amine clusters remain difficult and highly uncertain because their concentrations are only slightly above background levels, even during nucleation events.

  11. 1014 IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, VOL. 52, NO. 3, MARCH 2004 Recycling Ambient Microwave Energy With

    E-Print Network [OSTI]

    1014 IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, VOL. 52, NO. 3, MARCH 2004 Recycling are in wireless powering of industrial sensors and recycling of ambient RF energy. A 64-el- ement dual

  12. Exohedral Physisorption of Ambient Moisture Scales Non-monotonically with Fiber Proximity in Aligned Carbon Nanotube Arrays

    E-Print Network [OSTI]

    Stein, Itai Y.

    Here we present a study on the presence of physisorbed water on the surface of aligned carbon nanotubes (CNTs) in ambient conditions, where the wet CNT array mass can be more than 200% larger than that of dry CNTs, and ...

  13. TRACKING THE LITTLE BLACK "RAIN" CLOUDS: AN ENVIRO-ECONOMIC ANALYSIS OF AMBIENT AIR POLLUTION EFFECTS ON PEDIATRIC

    E-Print Network [OSTI]

    Maxwell, Bruce D.

    TRACKING THE LITTLE BLACK "RAIN" CLOUDS: AN ENVIRO-ECONOMIC ANALYSIS OF AMBIENT AIR POLLUTION Pollution and Respiratory Health Branch were wonderful research hosts and helpful model critics. Thank you

  14. PIANO DI RIQUALIFICAZIONE AMBIENTALE E PAESAGGISTICA DEL TERMOVALORIZZATORE DI DESIO TERMOVALORIZZATORE DI DESIO (MI) BRIANZA ENERGIA E AMBIENTE SPA

    E-Print Network [OSTI]

    Columbia University

    TERMOVALORIZZATORE DI DESIO (MI) ­ BRIANZA ENERGIA E AMBIENTE SPA Impianto di costruito negli anni '70 per lo. · Energia elettrica prodotta: 13.000.000 KWh/anno. LAND S.r.l. Landscape Architecture Nature Development

  15. Influence of temperature and strain rate on the compressive behavior of PMMA and polycarbonate polymers

    SciTech Connect (OSTI)

    Cady, C. M. (Carl McElhinney); Lopez, M. F. (Mike F.); Gray, G. T. (George T.), III; Idar, D. J. (Deanne J.); Blumenthal, W. R. (William R.)

    2001-01-01T23:59:59.000Z

    Compression stress-strain measurements have been made on commercial polymethylmethacrylate (PMMA) and polycarbonate (PC) polymers as a function of tcmperature (-197 C to 220 C) and strain rate. A split-Hopkinson-pressure bar (SJIPU) was used to achieve strain rates of about 2500 s-' and a servohydraulic tester was used for lower strain rate testing (0.001 to 5 s-'). The mechanical response of these transparent polymers is quite different. The strength of PC is weakly dependent on strain rate, only moderately dependent on temperature, and remains ductile to -197OC. In contrast, the strength of PMMA is linearly dependent on temperature and strongly dependent on strain rate. Significantly, PMMA develops cracking and fails in compression with little ductility ( 7 4 % total strain) at either low strain rates and very low temperatures (-197OC) or at high strain rates and temperatures very near ambient.

  16. Crystal Chemistry of NaMgF3 Perovskite at High Pressure and Temperature

    SciTech Connect (OSTI)

    Chen,J.; Liu, H.; Martin, C.; Parise, J.; Weidner, D.

    2005-01-01T23:59:59.000Z

    The crystal structure of NaMgF{sub 3} perovskite (neighborite) has been studied at 4 GPa and temperatures up to 1000 C using the Rietveld structure-refinement method. In situ synchrotron X-ray powder diffraction data was collected using monochromatic radiation. The orthorhombic (Pbnm) to cubic (Pm{bar 3}m) transition was observed when the temperature increased from 900 to 1000 C. Structure refinements show that the ratio of polyhedral volumes of the A and B sites (V{sub A}/V{sub B}) of the orthorhombic phase increases with temperature, approaching the ideal value (5) for the cubic structure. However, this ratio becomes smaller at 4 GPa compared to the result from previous studies at the same temperature but ambient pressure, indicating that pressure makes it more difficult to transform from the orthorhombic phase to the cubic phase in this kind of perovskite.

  17. Effects of Temperature and Humidity on Wilethane 44 Cure

    SciTech Connect (OSTI)

    John C. Weigle

    2006-10-01T23:59:59.000Z

    Wilethane 44 is a polyurethane adhesive developed by the Materials Team within ESA-MEE at Los Alamos National Laboratory as a replacement for Hexcel Corporation Urethane 7200. Urethane 7200 is used in numerous weapon systems, but it was withdrawn from the market in 1989. The weapons complex requires a replacement material for use in the W76-1 LEP and the W88, as well as for assembly of JTAs for other warheads. All polyurethane systems are susceptible to moisture reacting with unreacted isocyanate groups. This side reaction competes with the curing reaction and results in CO{sub 2} formation. Therefore, a polyurethane adhesive can exhibit foaming if appropriate environmental controls are not in place while it cures. A designed experiment has been conducted at TA-16-304 to determine the effects of ambient conditions on the properties of cured Wilethane 44. Temperature was varied from 15 C to 30 C and relative humidity from 15% to 40%. The density, hardness at 24 hours, and butt tensile strength on aluminum substrates were measured and fitted to quadratic equations over the experimental space. Additionally, the loss and storage moduli during cure were monitored as a function of cure temperature. These experiments provide a stronger basis for establishing appropriate environmental conditions and cure times when using Wilethane 44. The current guidelines are a working time of 90 minutes, a cure time of 18 hours, and a relative humidity of less than 25%, regardless of ambient temperature. Viscosity measurements revealed that the working time is a strong function of temperature and can be as long as 130 minutes at 15 C or as short as 90 minutes at 30 C. The experiments also showed that the gel time is much longer than originally thought, as long as 13 hours at 15 C. Consequently, it may be necessary to extend the required cure time at temperatures below 20 C. Allowable humidity varies as a function of temperature from 34% at 15 C to 15% at 30 C.

  18. OSMOTIC COEFFICIENTS, SOLUBILITIES, AND DELIQUESCENCE RELATIONS IN MIXED AQUEOUS SALT SOLUTIONS AT ELEVATED TEMPERATURE

    SciTech Connect (OSTI)

    M.S. Gruszkiewicz; D.A. Palmer

    2006-02-22T23:59:59.000Z

    While thermodynamic properties of pure aqueous electrolytes are relatively well known at ambient temperature, there are far fewer data for binary systems extending to elevated temperatures and high concentrations. There is no general theoretically sound basis for prediction of the temperature dependence of ionic activities, and consequently temperature extrapolations based on ambient temperature data and empirical equations are uncertain and require empirical verification. Thermodynamic properties of mixed brines in a wide range of concentrations would enhance the understanding and precise modeling of the effects of deliquescence of initially dry solids in humid air in geological environments and in modeling the composition of waters during heating, cooling, evaporation or condensation processes. These conditions are of interest in the analysis of waters on metal surfaces at the proposed radioactive waste repository at Yucca Mountain, Nevada. The results obtained in this project will be useful for modeling the long-term evolution of the chemical environment, and this in turn is useful for the analysis of the corrosion of waste packages. In particular, there are few reliable experimental data available on the relationship between relative humidity and composition that reveals the eutonic points of the mixtures and the mixture deliquescence RH. The deliquescence RH for multicomponent mixtures is lower than that of pure component or binary solutions, but is not easy to predict quantitatively since the solutions are highly nonideal. In this work we used the ORNL low-temperature and high-temperature isopiestic facilities, capable of precise measurements of vapor pressure between ambient temperature and 250 C for determination of not only osmotic coefficients, but also solubilities and deliquescence points of aqueous mixed solutions in a range of temperatures. In addition to standard solutions of CaCl{sub 2}, LiCl, and NaCl used as references, precise direct-pressure measurements were also made at elevated temperatures. The project included multicomponent mixtures useful for verification of models, and a set of binary solutions with common ions (such as KNO{sub 3} + NaNO{sub 3}, KNO{sub 3} + Ca(NO{sub 3}){sub 2}, NaNO{sub 3} + Na{sub 2}SO{sub 4}, and KNO{sub 3} + K{sub 2}SO{sub 4}) needed for determination of the mixing parameters in the Pitzer ion-interaction model for mixtures. The results are compared with existing experimental results and model predictions.

  19. The application of size- resolved hygroscopicity measurements to understand the physical and chemical properties of ambient aerosol

    E-Print Network [OSTI]

    Santarpia, Joshua Lee

    2005-08-29T23:59:59.000Z

    THE APPLICATION OF SIZE-RESOLVED HYGROSCOPICITY MEASUREMENTS TO UNDERSTANDING THE PHYSICAL AND CHEMICAL PROPERTIES OF AMBIENT AEROSOL A Dissertation by JOSHUA L. SANTARPIA Submitted to the Office of Graduate Studies of Texas A... AND CHEMICAL PROPERTIES OF AMBIENT AEROSOL A Dissertation by JOSHUA L. SANTARPIA Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY Approved...

  20. Transition temperature in QCD

    SciTech Connect (OSTI)

    Cheng, M.; Christ, N. H.; Mawhinney, R. D. [Physics Department, Columbia University, New York, New York 10027 (United States); Datta, S.; Jung, C.; Schmidt, C.; Umeda, T. [Physics Department, Brookhaven National Laboratory, Upton, New York 11973 (United States); Heide, J. van der; Kaczmarek, O.; Laermann, E.; Miao, C. [Fakultaet fuer Physik, Universitaet Bielefeld, D-33615 Bielefeld (Germany); Karsch, F. [Physics Department, Brookhaven National Laboratory, Upton, New York 11973 (United States); Fakultaet fuer Physik, Universitaet Bielefeld, D-33615 Bielefeld (Germany); Petreczky, P. [Physics Department, Brookhaven National Laboratory, Upton, New York 11973 (United States); RIKEN-BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973 (United States); Petrov, K. [Niels Bohr Institute, University of Copenhagen, Blegdamsvej 17, DK-2100 Copenhagen (Denmark)

    2006-09-01T23:59:59.000Z

    We present a detailed calculation of the transition temperature in QCD with two light and one heavier (strange) quark mass on lattices with temporal extent N{sub {tau}}=4 and 6. Calculations with improved staggered fermions have been performed for various light to strange quark mass ratios in the range, 0.05{<=}m-circumflex{sub l}/m-circumflex{sub s}{<=}0.5, and with a strange quark mass fixed close to its physical value. From a combined extrapolation to the chiral (m-circumflex{sub l}{yields}0) and continuum (aT{identical_to}1/N{sub {tau}}{yields}0) limits we find for the transition temperature at the physical point T{sub c}r{sub 0}=0.457(7) where the scale is set by the Sommer-scale parameter r{sub 0} defined as the distance in the static quark potential at which the slope takes on the value (dV{sub qq}(r)/dr){sub r=r{sub 0}}=1.65/r{sub 0}{sup 2}. Using the currently best known value for r{sub 0} this translates to a transition temperature T{sub c}=192(7)(4) MeV. The transition temperature in the chiral limit is about 3% smaller. We discuss current ambiguities in the determination of T{sub c} in physical units and also comment on the universal scaling behavior of thermodynamic quantities in the chiral limit.