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1

E-Print Network 3.0 - atmospheric trace element Sample Search...  

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

Summary: 6 2.0 Sources and Deposition of Trace Metals Trace elements enter the atmosphere via both natural... 5 Chapter 2: Sources and Deposition of Trace Metals...

2

Laboratory measurements and modeling of trace atmospheric species  

E-Print Network [OSTI]

Trace species play a major role in many physical and chemical processes in the atmosphere. Improving our understanding of the impact of each species requires a combination of laboratory exper- imentation, field measurements, ...

Sheehy, Philip M. (Philip Michael)

2005-01-01T23:59:59.000Z

3

E-Print Network 3.0 - atmospheric trace gas Sample Search Results  

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

Chemistry and Physics Discussions Trace gas measurements from... ., Rinsland, C. P., Stiller, G. P., and Zander, R.: On the assessment and uncertainty of atmospheric trace gas......

4

AtmosphericAtmospheric Composition Introduction The division investigates the atmospheric  

E-Print Network [OSTI]

development on observation side was the installation of an ozone observation station in Surinam in close co-operation with the Surinam Meteorological Service. Processes in the tropical regions are important for the global climate and the global atmospheric composition. The participation in Indoex (Indian Ocean Experiment) and this Surinam

Haak, Hein

5

Characteristic emission enhancement in the atmosphere with Rn trace using metal assisted LIBS  

SciTech Connect (OSTI)

Several characteristic emission lines from the metal targets (Cu, Zn and Pb) were investigated in trace presence of radon gas in the atmospheric air, using Q-SW Nd:YAG laser induced plasma inside a control chamber. The emission lines of metal species are noticeably enhanced in (Rn+air), relative to those in the synthetic air alone. Similar spectra were also taken in various sub-atmospheric environments in order to determine the optimum pressure for enhancement. Solid-state nuclear track detectors were also employed to count the tracks due to alpha particles for the activity assessment.

Hashemi, M. M. [Physics Department, Doctorate Technical Center of PNU, P.O. Box 19536-33511, Tehran (Iran, Islamic Republic of); Parvin, P., E-mail: parvin@aut.ac.ir; Moosakhani, A. [Physics Department, Amirkabir University of Technology, P.O. Box 15875-4413, Tehran (Iran, Islamic Republic of); Mortazavi, S. Z.; Reyhani, A. [Physics Department, Imam Khomeini International University, P.O. Box 34149-16818, Qazvin (Iran, Islamic Republic of); Majdabadi, A. [Laser and Optics Research School, NSTRI, P.O. Box 11155-3486, Tehran (Iran, Islamic Republic of); Abachi, S. [Physics Department, University of California, Irvin, CA 92697 (United States)

2014-06-15T23:59:59.000Z

6

Role of trace impurities in large-volume noble gas atmospheric-pressure glow discharges  

E-Print Network [OSTI]

Role of trace impurities in large-volume noble gas atmospheric-pressure glow discharges Xiaohui. Large-volume APG discharges find numerous applications in processing of material surfaces,1 ozone-purity helium is presented, and the role of trace impurities in such noble gas plasmas is established. Trace

Raja, Laxminarayan L.

7

Atmospheric Trace Gases from the Carbon Dioxide Information Analysis Center (CDIAC)  

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

CDIAC products are indexed and searchable through a customized interface powered by ORNL's Mercury search engine. Products include numeric data packages, publications, trend data, atlases, models, etc. and can be searched for by subject area, keywords, authors, product numbers, time periods, collection sites, spatial references, etc. Some of the collections may also be included in the CDIAC publication, Trends Online: A Compendium of Global Change Data. Most data sets, many with numerous data files, are free to download from CDIAC's ftp area. The collections under the CDIAC heading of Atmospheric Trace Gases include: Atmospheric Carbon Dioxide, Atmospheric Methane, Atmospheric Carbon Monoxide, Atmospheric Hydrogen, Isotopes in Greenhouse Gases, Radionuclides, Aerosols, and Other Trace Gases.

8

Chapter 2: Sources and Deposition of Trace Metals 2.1 Main Sources of Atmospheric Pollution...............................................7  

E-Print Network [OSTI]

5 Chapter 2: Sources and Deposition of Trace Metals 2.1 Main Sources of Atmospheric Pollution distances causing regional or global pollution. Fig. 2.1: Sources of trace metals in the environment. Contamination of the atmosphere by pollutant trace metals affects the environment directly through its impact

Short, Daniel

9

Interactive Visualization of Modeled Atmospheric Trace Constituents Carmen M. Benkovitz  

E-Print Network [OSTI]

the effects of the emissions of Popocatepetl volcano, located near Mexico City. The effects of stronger of the Brookhaven National Laboratory Chemical Transport Model (CTM) of sulfate in the atmosphere. The visualization on climate. Anthropogenic activities affect the aerosol content of the atmosphere. Anthropogenic emissions

10

Trace gas contaminant control in a space station atmosphere using adsorption  

SciTech Connect (OSTI)

Trace contaminants enter spacecraft atmospheres through offgassing of spacecraft materials and as products of crew metabolism. The consequences of fire or accidental release of toxic vapors from onboard systems is also a crew safety concern. The purpose of this work was to determine how these contaminants could be limited to safe concentrations in the atmosphere of the proposed space station. Contaminant source models were developed from spacecraft material offgassing and human metabolic production rate measurements. Contaminants were represented with a simplified model of 30 compounds by grouping similar species together. A trace contaminant control process, which consists of chemisorption of ammonia on phosphoric acid-impregnated activated carbon, ambient temperature catalytic oxidation of hydrogen and carbon monoxide, catalytic conversion of the sulfur in hydrogen sulfide and mercaptans to elemental sulfur, and adsorption of the other contaminants in a regenerable activated carbon adsorber, was proposed. Trace contaminant adsorption rate and equilibrium equations were derived. Various adsorbents were evaluated to determine the optimum sorbents for this application. Removal system performance limits were established, and optimum design ranges for process parameters were developed. Trace gas contaminants can be limited to safe concentrations by the process proposed under normal conditions using as little as 1 Kg/man-year of ammonia chemisorbent. The most likely accidental contaminant releases can be removed in {approximately}20 hours using frequent adsorber regenerations.

Winter, J.D.

1988-01-01T23:59:59.000Z

11

Carbon dioxide Information Analysis Center and World Data Center: A for Atmospheric trace gases. Annual progress report, FY 1994  

SciTech Connect (OSTI)

This report summarizes the activities and accomplishments made by the Carbon Dioxide Information Analysis Center and World Data Center-A for Atmospheric Trace Gases during the fiscal year 1994. Topics discussed in this report include; organization and staff, user services, systems, communications, Collaborative efforts with China, networking, ocean data and activities of the World Data Center-A.

Burtis, M.D. [comp.] [Tennessee Univ., Knoxville, TN (United States). Energy, Environment and Resources Center; Cushman, R.M.; Boden, T.A.; Jones, S.B.; Nelson, T.R.; Stoss, F.W. [Oak Ridge National Lab., TN (United States)

1995-03-01T23:59:59.000Z

12

E-Print Network 3.0 - atmospheric trace metals Sample Search...  

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

Sciences and Ecology 2 Chapter 1: Modelling Past Environmental Changes Using Lake Sediment Records Summary: of the anthropogenic fluxes of many potentially toxic trace metals...

13

An Investigation of Martian Methane & Implications for Future Missions Keywords: Mars, atmosphere; Atmospheres, composition; Spectroscopy; Infrared observations  

E-Print Network [OSTI]

An Investigation of Martian Methane & Implications for Future Missions Keywords: Mars, atmosphere and Planetary Institute discussing the recent detection of methane in the Martian atmosphere. Methane requires constant renewal in the Martian atmosphere, so this discovery implies the presence of methane sources

Richardson Jr., James E.

14

Oil and gas exploration system and method for detecting trace amounts of hydrocarbon gases in the atmosphere  

DOE Patents [OSTI]

An oil and gas exploration system and method for land and airborne operations, the system and method used for locating subsurface hydrocarbon deposits based upon a remote detection of trace amounts of gases in the atmosphere. The detection of one or more target gases in the atmosphere is used to indicate a possible subsurface oil and gas deposit. By mapping a plurality of gas targets over a selected survey area, the survey area can be analyzed for measurable concentration anomalies. The anomalies are interpreted along with other exploration data to evaluate the value of an underground deposit. The system includes a differential absorption lidar (DIAL) system with a spectroscopic grade laser light and a light detector. The laser light is continuously tunable in a mid-infrared range, 2 to 5 micrometers, for choosing appropriate wavelengths to measure different gases and avoid absorption bands of interference gases. The laser light has sufficient optical energy to measure atmospheric concentrations of a gas over a path as long as a mile and greater. The detection of the gas is based on optical absorption measurements at specific wavelengths in the open atmosphere. Light that is detected using the light detector contains an absorption signature acquired as the light travels through the atmosphere from the laser source and back to the light detector. The absorption signature of each gas is processed and then analyzed to determine if a potential anomaly exists.

Wamsley, Paula R. (Littleton, CO); Weimer, Carl S. (Littleton, CO); Nelson, Loren D. (Evergreen, CO); O'Brien, Martin J. (Pine, CO)

2003-01-01T23:59:59.000Z

15

E-Print Network 3.0 - atmospheric trace molecule Sample Search...  

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

or have currently low atmospheric mixing ratios. 2031 12... ., Rinsland, C. P., Stiller, G. P., and Zander, R.: On the assessment and ... Source: Ecole Polytechnique, Centre...

16

Multiscale eddy simulation for moist atmospheric convection: Preliminary investigation  

SciTech Connect (OSTI)

A multiscale computational framework is designed for simulating atmospheric convection and clouds. In this multiscale framework, large eddy simulation (LES) is used to model the coarse scales of 100 m and larger, and a stochastic, one-dimensional turbulence (ODT) model is used to represent the fine scales of 100 m and smaller. Coupled and evolving together, these two components provide a multiscale eddy simulation (MES). Through its fine-scale turbulence and moist thermodynamics, MES allows coarse grid cells to be partially cloudy and to encompass cloudy–clear air mixing on scales down to 1 m; in contrast, in typical LES such fine-scale processes are not represented or are parameterized using bulk deterministic closures. To illustrate MES and investigate its multiscale dynamics, a shallow cumulus cloud field is simulated. The fine-scale variability is seen to take a plausible form, with partially cloudy grid cells prominent near cloud edges and cloud top. From earlier theoretical work, this mixing of cloudy and clear air is believed to have an important impact on buoyancy. However, contrary to expectations based on earlier theoretical studies, the mean statistics of the bulk cloud field are essentially the same in MES and LES; possible reasons for this are discussed, including possible limitations in the present formulation of MES. One difference between LES and MES is seen in the coarse-scale turbulent kinetic energy, which appears to grow slowly in time due to incoherent stochastic fluctuations in the buoyancy. This and other considerations suggest the need for some type of spatial and/or temporal filtering to attenuate undersampling of the stochastic fine-scale processes.

Stechmann, Samuel N., E-mail: stechmann@wisc.edu [Department of Mathematics, University of Wisconsin-Madison (United States); Department of Atmospheric and Oceanic Sciences, University of Wisconsin-Madison (United States)

2014-08-15T23:59:59.000Z

17

Carbon Dioxide Information Analysis Center and World Data Center-A for atmospheric trace gases: FY 1993 activities  

SciTech Connect (OSTI)

During the course of a fiscal year, Oak Ridge National Laboratory`s Carbon Dioxide Information Analysis Center (CDIAC) distributes thousands of specialty publications-numeric data packages (NDPs), computer model packages (CMPs), technical reports, public communication publications, newsletters, article reprints, and reference books-in response to requests for information related to global environmental issues, primarily those pertaining to climate change. CDIAC`s staff also provide technical responses to specific inquiries related to carbon dioxide (CO{sub 2}), other trace gases, and climate. Hundreds of referrals to other researchers, policy analysts, information specialists, or organizations are also facilitated by CDIAC`s staff. This report provides an account of the activities accomplished by CDIAC (including World Data Center-A for Atmospheric Trace Gases) during the period October 1, 1992, to September 30, 1993. An organizational overview of CDIAC and its staff is supplemented by a detailed description of inquiries received and CDIAC`s response to those inquiries. An analysis and description of the preparation and distribution of NDPS, CMPS, technical reports, newsletters, fact sheets, specialty publications, and reprints are provided. Comments and descriptions of CDIAC`s information management systems, professional networking, and special bilateral agreements are also presented.

Cushman, R.M. [Oak Ridge National Lab., TN (United States). Carbon Dioxide Information Analysis Center; Stoss, F.W. [Oak Ridge National Lab., TN (United States). Carbon Dioxide Information Analysis Center]|[Univ. of Tennessee, Knoxville, TN (United States). Energy, Environment, and Resources Center

1994-01-01T23:59:59.000Z

18

A General Investigation of Optimized Atmospheric Sample Duration  

SciTech Connect (OSTI)

ABSTRACT The International Monitoring System (IMS) consists of up to 80 aerosol and xenon monitoring systems spaced around the world that have collection systems sensitive enough to detect nuclear releases from underground nuclear tests at great distances (CTBT 1996; CTBTO 2011). Although a few of the IMS radionuclide stations are closer together than 1,000 km (such as the stations in Kuwait and Iran), many of them are 2,000 km or more apart. In the absence of a scientific basis for optimizing the duration of atmospheric sampling, historically scientists used a integration times from 24 hours to 14 days for radionuclides (Thomas et al. 1977). This was entirely adequate in the past because the sources of signals were far away and large, meaning that they were smeared over many days by the time they had travelled 10,000 km. The Fukushima event pointed out the unacceptable delay time (72 hours) between the start of sample acquisition and final data being shipped. A scientific basis for selecting a sample duration time is needed. This report considers plume migration of a nondecaying tracer using archived atmospheric data for 2011 in the HYSPLIT (Draxler and Hess 1998; HYSPLIT 2011) transport model. We present two related results: the temporal duration of the majority of the plume as a function of distance and the behavior of the maximum plume concentration as a function of sample collection duration and distance. The modeled plume behavior can then be combined with external information about sampler design to optimize sample durations in a sampling network.

Eslinger, Paul W.; Miley, Harry S.

2012-11-28T23:59:59.000Z

19

Numerical Investigation of Light Scattering by Atmospheric Particles  

E-Print Network [OSTI]

(PSTD) for calculating scattering properties, its advantages and the elimination of the Gibbs phenomenon. The applicability of the parallelized PSTD implementation is investigated for both spherical and nonspherical particles over a wide range of sizes...

Liu, Chao

2013-07-12T23:59:59.000Z

20

Investigations on the sediment chronology and trace metal accumulation in Sabine-Neches estuary, Beaumont, Texas  

E-Print Network [OSTI]

geochronology of sediments and reconstruction of the history of trace metal inputs into this shallow estuarine environment was possible because the 239,240pu profiles closely tracked the bomb fallout history into the environment. The sedimentation rate...

Ravichandran, Mahalingam

1994-01-01T23:59:59.000Z

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


21

Atmospheric Corrosion of Silver Investigated by X-ray Photoelectron Spectroscopy Dissertation  

E-Print Network [OSTI]

Atmospheric Corrosion of Silver Investigated by X-ray Photoelectron Spectroscopy Dissertation Atmospheric corrosion is a costly problem. Accelerated laboratory tests, such as the salt fog chamber, have been created to predict corrosion of materials without the need to expose them over long periods

22

Stratospheric and mesospheric pressure-temperature profiles from rotational analysis of CO2 lines in atmospheric trace molecule spectroscopy/ATLAS 1 infrared solar occultation spectra  

SciTech Connect (OSTI)

A simple, classical, and expedient method for the retrieval of atmospheric pressure-temperature profiles has been applied to the high-resolution infrared solar absorption spectra obtained with the atmospheric trace molecule spectroscopy (ATMOS) instrument. The basis for this method is a rotational analysis of retrieved apparent abundances from CO2 rovibrational absorption lines, employing existing constituent concentration retrieval software used in the analysis of data returned by ATMOS. Pressure-temperature profiles derived from spectra acquired during the ATLAS 1 space shuttle mission of March-April 1992 are quantitatively evaluated and compared with climatological and meteorological data as a means of assessing the validity of this approach.

Stiller, G.P.; Gunson, M.R.; Lowes, L.L.; Abrams, M.C.; Raper, O.F.; Farmer, C.B.; Zander, R.; Rinsland, C.P. [Kernforschungszentrum Karlsruhe, Karlsruhe (Germany)] [Kernforschungszentrum Karlsruhe, Karlsruhe (Germany); [Jet Propulsion Lab., California Inst. of Tech., Pasadena, CA (United States); [Liege Univ., Liege (Belgium); [NASA, Langley Research Center, Hampton, VA (United States)

1995-02-01T23:59:59.000Z

23

investigating the source, transport, and isotope fractionation of water vapor in the atmospheric boundary layer  

E-Print Network [OSTI]

investigating the source, transport, and isotope fractionation of water vapor in the atmospheric-portable mixing ratio generator and Rayleigh distillation device, Agricultural and Forest Meteorology, 150, 1607 ratio generator. Incom- ing dry air passes through a molecular sieve and then a stainless steel frit (a

Minnesota, University of

24

Investigation of SGP Atmospheric Moisture Budget for CLASIC … Recycling Study  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsingFunInfrared LandResponses toInvestigating ExtremeInvestigation ofAngleElectron

25

Integrated Study of MFRSR-derived Parameters of Atmospheric Aerosols and Trace Gases Over the ARM CART Site Extended Facili...  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsingFunInfrared Land SurfaceVirus-Infected Macaques throughBiomass

26

Spatial Heterogeneity of Trace Species Distributions in the Atmosphere and their effects on Climate Change  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administrationcontroller systemsBiSiteNeutron Scattering Facilities » Spallation NeutronRadiative

27

Fiscal Year 1998 Annual Report, Carbon Dioxide Information Analysis Center, World Data Center -- A for Atmospheric Trace Gases  

SciTech Connect (OSTI)

Once again, the most recent fiscal year was a productive one for the Carbon Dioxide Information Analysis Center (CDIAC) at Oak Ridge National Laboratory (ORNL), as well as a year for change. The FY 1998 in Review section in this report summarizes quite a few new and updated data and information products, and the ''What's Coming in FY 1999'' section describes our plans for this new fiscal year. During FY 1998, CDIAC began a data-management system for AmeriFlux, a long-term study of carbon fluxes between the terrestrial biosphere of the Western Hemisphere and the atmosphere. The specific objectives of AmeriFlux are to establish an infrastructure for guiding, collecting, synthesizing, and disseminating long-term measurements of CO{sub 2}, water, and energy exchange from a variety of ecosystems; collect critical new information to help define the current global CO{sub 2} budget; enable improved predictions of future concentrations of atmospheric CO{sub 2}; and enhance understanding of carbon fluxes. Net Ecosystem Production (NEP), and carbon sequestration in the terrestrial biosphere. The data-management system, available from CDIAC'S AmeriFlux home page (http://cdiac.esd.ornl.gov/programs/ameriflux/ ) is intended to provide consistent, quality-assured, and documented data across all AmeriFlux sites in the US, Canada, Costa Rica, and Brazil. It is being developed by Antoinette Brenkert and Tom Boden, with assistance from Susan Holladay (who joined CDIAC specifically to support the AmeriFlux data-management effort).

Cushman, R.M.; Boden, T.A.; Hook, L.A.; Jones, S.B.; Kaiser, D.P.; Nelson, T.R.

1999-03-01T23:59:59.000Z

28

Remote Raman - laser induced breakdown spectroscopy (LIBS) geochemical investigation under Venus atmospheric conditions  

SciTech Connect (OSTI)

The extreme Venus surface temperatures ({approx}740 K) and atmospheric pressures ({approx}93 atm) create a challenging environment for surface missions. Scientific investigations capable of Venus geochemical observations must be completed within hours of landing before the lander will be overcome by the harsh atmosphere. A combined remote Raman - LIBS (Laser Induced Breakdown Spectroscopy) instrument is capable of accomplishing the geochemical science goals without the risks associated with collecting samples and bringing them into the lander. Wiens et al. and Sharma et al. demonstrated that both analytical techniques can be integrated into a single instrument capable of planetary missions. The focus of this paper is to explore the capability to probe geologic samples with Raman - LIBS and demonstrate quantitative analysis under Venus surface conditions. Raman and LIBS are highly complementary analytical techniques capable of detecting both the mineralogical and geochemical composition of Venus surface materials. These techniques have the potential to profoundly increase our knowledge of the Venus surface composition, which is currently limited to geochemical data from Soviet Venera and VEGA landers that collectively suggest a surface composition that is primarily tholeiitic basaltic with some potentially more evolved compositions and, in some locations, K-rich trachyandesite. These landers were not equipped to probe the surface mineralogy as can be accomplished with Raman spectroscopy. Based on the observed compositional differences and recognizing the imprecise nature of the existing data, 15 samples were chosen to constitute a Venus-analog suite for this study, including five basalts, two each of andesites, dacites, and sulfates, and single samples of a foidite, trachyandesite, rhyolite, and basaltic trachyandesite under Venus conditions. LIBS data reduction involved generating a partial least squares (PLS) model with a subset of the rock powder standards to quantitatively determine the major elemental abundance of the remaining samples. PLS analysis suggests that the major element compositions can be determined with root mean square errors ca. 5% (absolute) for SiO{sub 2}, Al{sub 2}O{sub 3}, Fe{sub 2}O{sub 3}(total), MgO, and CaO, and ca. 2% or less for TiO{sub 2}, Cr{sub 2}O{sub 3}, MnO, K{sub 2}O, and Na{sub 2}O. Finally, the Raman experiments have been conducted under supercritical CO{sub 2} involving single-mineral and mixed-mineral samples containing talc, olivine, pyroxenes, feldspars, anhydrite, barite, and siderite. The Raman data have shown that the individual minerals can easily be identified individually or in mixtures.

Clegg, Sanuel M [Los Alamos National Laboratory; Barefield, James E [Los Alamos National Laboratory; Humphries, Seth D [Los Alamos National Laboratory; Wiens, Roger C [Los Alamos National Laboratory; Vaniman, D. T. [Los Alamos National Laboratory; Sharma, S. K. [UNIV OF HAWAII; Misra, A. K. [UNIV OF HAWAII; Dyar, M. D. [MT. HOLYOKE COLLEGE; Smrekar, S. E. [JET PROPULSION LAB.

2010-12-13T23:59:59.000Z

29

Experimental and theoretical investigation of nucleation and growth of atmospheric aerosols  

E-Print Network [OSTI]

, and a theoretical study of atmospheric molecular complexes and clusters. The nucleation rate was considerably enhanced in the presence of cis-pinonic acid and ammonia. The composition of the critical cluster was estimated from the dependence...

Zhao, Jun

2009-05-15T23:59:59.000Z

30

Investigation of HCCI Combustion of Diethyl Ether and Ethanol Mixtures Using Carbon 14 Tracing and Numerical Simulations  

SciTech Connect (OSTI)

Despite the rapid combustion typically experienced in Homogeneous Charge Compression Ignition (HCCI), components in fuel mixtures do not ignite in unison or burn equally. In our experiments and modeling of blends of diethyl ether (DEE) and ethanol (EtOH), the DEE led combustion and proceeded further toward completion, as indicated by {sup 14}C isotope tracing. A numerical model of HCCI combustion of DEE and EtOH mixtures supports the isotopic findings. Although both approaches lacked information on incompletely combusted intermediates plentiful in HCCI emissions, the numerical model and {sup 14}C tracing data agreed within the limitations of the single zone model. Despite the fact that DEE is more reactive than EtOH in HCCI engines, they are sufficiently similar that we did not observe a large elongation of energy release or significant reduction in inlet temperature required for light-off, both desired effects for the combustion event. This finding suggests that, in general, HCCI combustion of fuel blends may have preferential combustion of some of the blend components.

Mack, J H; Dibble, R W; Buchholz, B A; Flowers, D L

2004-01-16T23:59:59.000Z

31

Investigating the local atmospheric response to a5 realistic shift in the Oyashio sea surface6  

E-Print Network [OSTI]

, where extratropical SST forcing produces31 shallow anomalous heating balanced by strong equatorward cold the atmosphere, beyond basic thermodynamic air-sea coupling via59 turbulent boundary layer heat flux exchange, most of the SST anomaly induced diabatic heating ( ) is balanced by29 poleward transient eddy heat

Newman, Matthew

32

Investigation of coal stockpiles of Tuncbilek thermal power plant with respect to time under atmospheric conditions  

SciTech Connect (OSTI)

Thermal power plants have delayed the coal that they will use at stockpiles mandatorily. If these coal stockpiles remain at the stockyards over a certain period of time, a spontaneous combustion can be started itself. Coal stocks under combustion threat can cost too much economically to coal companies. Therefore, it is important to take some precautions for saving the stockpiles from the spontaneous combustion. In this research a coal stockpile at Tuncbilek Thermal Power Plant which was formed in 5 m wide, 10 m long, and 3 m height with a weight of 120 tons to observe internal temperature changes with respect to time under normal atmospheric conditions. Later, internal temperature measurements were obtained at 20 points distributed all over two layers in the stockpile. The parameters, such as air temperature, humidity, atmosphere pressure, wind speed and direction, which are effective on the stockpiles, were measured and used to obtain the graphs of stockpiles' internal temperature.

Ozdeniz, A.H. [Selcuk University, Konya (Turkey). Dept. of Mining Engineering

2009-07-01T23:59:59.000Z

33

Technical Sessions Principal Investigator: S. A. Clough Atmospheric and Environmental Research, Inc.  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security AdministrationcontrollerNanocrystallineForeign ObjectOUR8, 2013Battelle:TechnicalP. Daum L.Principal

34

E-Print Network 3.0 - atmospheric pb deposition Sample Search...  

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

of Atmospheric Pollution... 6 2.0 Sources and Deposition of Trace Metals Trace elements enter the atmosphere via both natural... ANTHROPOGENICNATURAL 12;Chapter 2: Sources and...

35

E-Print Network 3.0 - atmospheric bulk deposition Sample Search...  

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

of Atmospheric Pollution... 6 2.0 Sources and Deposition of Trace Metals Trace elements enter the atmosphere via both natural... ANTHROPOGENICNATURAL 12;Chapter 2: Sources and...

36

Investigation on plasma parameters and step ionization from discharge characteristics of an atmospheric pressure Ar microplasma jet  

SciTech Connect (OSTI)

In this communication, we report a technique to estimate the plasma parameters from the discharge characteristics of a microplasma device, operated in atmospheric pressure on the basis of homogeneous discharge model. By this technique, we investigate the plasma parameters of a microplasma jet produced by microplasma device consisting of coaxial capillary electrodes surrounded by dielectric tube. Our results suggest that the complex dependence of electrical discharge characteristics observed for microplasma device operated with Ar or it admixtures probably signify the existence of step ionization, which is well known in inductively coupled plasma.

Bora, B.; Bhuyan, H.; Favre, M.; Chuaqui, H.; Wyndham, E. [Facultad de Fisica, Pontificia Universidad Catolica de Chile, Ave. Vicuna Mackenna 4860, Santiago (Chile); Kakati, M. [Thermal Plasma Processed Materials Laboratory, Centre of Plasma Physics, Institute for Plasma Research, Sonapur 782 402, Assam (India)

2012-06-15T23:59:59.000Z

37

Analytical and experimental investigations of gas turbine model combustor acoustics operated at atmospheric pressure  

E-Print Network [OSTI]

Analytical and experimental investigations of gas turbine model combustor acoustics operated the eigenmodes of the combustor results from the resonant coupling between pressure disturbances in the flame distribution within the combustor, except when these frequencies match. When the frequencies are close to each

Paris-Sud XI, Université de

38

Atomic-scale investigation of point defects and hydrogen-solute atmospheres on the edge dislocation mobility in alpha iron  

SciTech Connect (OSTI)

In this study, we present atomistic mechanisms of 1/2 [111](11{sup ¯}0) edge dislocation interactions with point defects (hydrogen and vacancies) and hydrogen solute atmospheres in body centered cubic (bcc) iron. In metals such as iron, increases in hydrogen concentration can increase dislocation mobility and/or cleavage-type decohesion. Here, we first investigate the dislocation mobility in the presence of various point defects, i.e., change in the frictional stress as the edge dislocation interacts with (a) vacancy, (b) substitutional hydrogen, (c) one substitutional and one interstitial hydrogen, (d) interstitial hydrogen, (e) vacancy and interstitial hydrogen, and (f) two interstitial hydrogen. Second, we examine the role of a hydrogen-solute atmosphere on the rate of local dislocation velocity. The edge dislocation simulation with a vacancy in the compression side of the dislocation and an interstitial hydrogen atom at the tension side exhibit the strongest mechanical response, suggesting a higher potential barrier and hence, the higher frictional stress (i.e., ?83% higher than the pure iron Peierls stress). In the case of a dislocation interacting with a vacancy on the compressive side, the vacancy binds with the edge dislocation, resulting in an increase in the friction stress of about 28% when compared with the Peierls stress of an edge dislocation in pure iron. Furthermore, as the applied strain increases, the vacancy migrates through a dislocation transportation mechanism by attaining a velocity of the same order as the dislocation velocity. For the case of the edge dislocation interacting with interstitial hydrogen on the tension side, the hydrogen atom jumps through one layer perpendicular to the glide plane during the pinning-unpinning process. Finally, our simulation of dislocation interactions with hydrogen show first an increase in the local dislocation velocity followed by a pinning of the dislocation core in the atmosphere, resulting in resistance to dislocation motion as the dislocation moves though the hydrogen-solute atmospheres. With this systematic, atomistic study of the edge dislocation with various point defects, we show significant increase in obstacle strengths in addition to an increase in the local dislocation velocity during interaction with solute atmospheres. The results have implications for constitutive development and modeling of the hydrogen effect on dislocation mobility and deformation in metals.

Bhatia, M. A.; Solanki, K. N., E-mail: kiran.solanki@asu.edu [School for Engineering of Matter, Transport, and Energy, Arizona State University, Tempe, Arizona 85287 (United States); Groh, S. [Institute of Mechanics and Fluid Dynamics, TU Bergakademie Freiberg, Freiberg 09556 (Germany)

2014-08-14T23:59:59.000Z

39

Magnetic resonance investigation of Zn{sub 1?x}Fe{sub x}O properties influenced by annealing atmosphere  

SciTech Connect (OSTI)

ZnO is an attractive system for a wide variety of practical applications, being a chemically stable oxide semiconductor. It has been shown that Fe doping produces ferromagnetic semiconductor at room temperature. This material, therefore, has the potential for use in spintronic devices such as spin transistors, spin light emitting diodes, very high density nonvolatile semiconductor memory and optical emitters. It is believed that oxygen vacancies and substitutional incorporation are important to produce ferromagnetism in semiconductor oxide doped with transition metal ions. The present paper reports detailed electron paramagnetic resonance investigations (EPR) of the samples in order to investigate how annealing atmosphere (Air and Argon) influenced the magnetic behavior of the samples. X-band electron paramagnetic resonance (EPR) studies of Fe{sup 3+} ions in Zn{sub 1?x}Fe{sub x}O powders with x = 1%, 3% is reported. These samples are interesting to investigate as Fe doping produce ferromagnetism in ZnO, making a promising ferromagnetic semiconductor at room temperature.

Raita, O.; Popa, A.; Toloman, D.; Stan, M.; Giurgiu, L. M. [National Institute for Research and Development of Isotopic and Molecular Technologies Donath 65-103, 400293, Cluj-Napoca (Romania)] [National Institute for Research and Development of Isotopic and Molecular Technologies Donath 65-103, 400293, Cluj-Napoca (Romania)

2013-11-13T23:59:59.000Z

40

Corrective Action Investigation Plan for Corrective Action Unit 104: Area 7 Yucca Flat Atmospheric Test Sites, Nevada National Security Site, Nevada, Revision 0  

SciTech Connect (OSTI)

CAU 104 comprises the 15 CASs listed below: (1) 07-23-03, Atmospheric Test Site T-7C; (2) 07-23-04, Atmospheric Test Site T7-1; (3) 07-23-05, Atmospheric Test Site; (4) 07-23-06, Atmospheric Test Site T7-5a; (5) 07-23-07, Atmospheric Test Site - Dog (T-S); (6) 07-23-08, Atmospheric Test Site - Baker (T-S); (7) 07-23-09, Atmospheric Test Site - Charlie (T-S); (8) 07-23-10, Atmospheric Test Site - Dixie; (9) 07-23-11, Atmospheric Test Site - Dixie; (10) 07-23-12, Atmospheric Test Site - Charlie (Bus); (11) 07-23-13, Atmospheric Test Site - Baker (Buster); (12) 07-23-14, Atmospheric Test Site - Ruth; (13) 07-23-15, Atmospheric Test Site T7-4; (14) 07-23-16, Atmospheric Test Site B7-b; (15) 07-23-17, Atmospheric Test Site - Climax These sites are being investigated because existing information on the nature and extent of potential contamination is insufficient to evaluate and recommend corrective action alternatives (CAAs). Additional information will be obtained by conducting a corrective action investigation before evaluating CAAs and selecting the appropriate corrective action for each CAS. The results of the field investigation will support a defensible evaluation of viable CAAs that will be presented in the Corrective Action Decision Document. The sites will be investigated based on the data quality objectives (DQOs) developed on April 28, 2011, by representatives of the Nevada Division of Environmental Protection and the U.S. Department of Energy (DOE), National Nuclear Security Administration Nevada Site Office. The DQO process was used to identify and define the type, amount, and quality of data needed to develop and evaluate appropriate corrective actions for CAU 104. The releases at CAU 104 consist of surface-deposited radionuclides from 30 atmospheric nuclear tests. The presence and nature of contamination at CAU 104 will be evaluated based on information collected from a field investigation. Radiological contamination will be evaluated based on a comparison of the total effective dose (TED) to the dose-based final action level (FAL). The presence of TED exceeding the FAL is considered a radiological contaminant of concern (COC). Anything identified as a COC will require corrective action. The TED will be calculated as the total of separate estimates of internal and external dose. Results from the analysis of soil samples will be used to calculate internal radiological dose. Thermoluminescent dosimeters will be used to measure external radiological dose. Based on process knowledge of the releases associated with the nuclear tests and radiological survey information about the location and shape of the resulting contamination plume, it was determined that the releases from the nuclear tests are co-located and will be investigated concurrently. A field investigation will be performed to define areas where TED exceeds the FAL and to determine whether other COCs are present at the site. The investigation will also collect information to determine the presence and nature of contamination associated with migration and excavation, as well as any potential releases discovered during the investigation. Appendix A provides a detailed discussion of the DQO methodology and the DQOs specific to each CAS.

Patrick Matthews

2011-08-01T23:59:59.000Z

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


41

Investigation into the effects of trace coal syn gas species on the performance of solid oxide fuel cell anodes, PhD. thesis, Russ College of Engineering and Technology of Ohio University  

SciTech Connect (OSTI)

Coal is the United States’ most widely used fossil fuel for the production of electric power. Coal’s availability and cost dictates that it will be used for many years to come in the United States for power production. As a result of the environmental impact of burning coal for power production more efficient and environmentally benign power production processes using coal are sought. Solid oxide fuel cells (SOFCs) combined with gasification technologies represent a potential methodology to produce electric power using coal in a much more efficient and cleaner manner. It has been shown in the past that trace species contained in coal, such as sulfur, severely degrade the performance of solid oxide fuel cells rendering them useless. Coal derived syngas cleanup technologies have been developed that efficiently remove sulfur to levels that do not cause any performance losses in solid oxide fuel cells. The ability of these systems to clean other trace species contained in syngas is not known nor is the effect of these trace species on the performance of solid oxide fuel cells. This works presents the thermodynamic and diffusion transport simulations that were combined with experimental testing to evaluate the effects of the trace species on the performance of solid oxide fuel cells. The results show that some trace species contained in coal will interact with the SOFC anode. In addition to the transport and thermodynamic simulations that were completed experimental tests were completed investigating the effect of HCl and AsH3 on the performance of SOFCs.

Trembly, J.P.

2007-06-01T23:59:59.000Z

42

Investigations of cloud altering effects of atmospheric aerosols using a new mixed Eulerian-Lagrangian aerosol model  

E-Print Network [OSTI]

Industry, urban development, and other anthropogenic influences have substantially altered the composition and size-distribution of atmospheric aerosol particles over the last century. This, in turn, has altered cloud ...

Steele, Henry Donnan, 1974-

2004-01-01T23:59:59.000Z

43

Statistical analysis of aerosol species, trace gasses, and meteorology in Chicago  

E-Print Network [OSTI]

possible pollutant sources. Keywords Atmospheric aerosols . Canonical correlation analysis . Chicago air pollution studies involve collection and anal- ysis of atmospheric aerosols and concurrent meteorol- ogy) and principal component analysis (PCA) were applied to atmospheric aerosol and trace gas concentrations

O'Brien, Timothy E.

44

Trace analysis of atmospheric organic bases  

E-Print Network [OSTI]

compounds (244- 248). Therefore, several metallic TPP and Pc complexes were inves- tigated as air adsorbents for nitrogen compounds. The use of metallic TPP and Pc complexes as such adsorbents would minimize the number of steps and, therefore...

Clark, Dwayne C.

1984-01-01T23:59:59.000Z

45

Corrective Action Investigation Plan for Corrective Action Unit 570: Area 9 Yucca Flat Atmospheric Test Sites Nevada National Security Site, Nevada, Revision 0  

SciTech Connect (OSTI)

CAU 570 comprises the following six corrective action sites (CASs): • 02-23-07, Atmospheric Test Site - Tesla • 09-23-10, Atmospheric Test Site T-9 • 09-23-11, Atmospheric Test Site S-9G • 09-23-14, Atmospheric Test Site - Rushmore • 09-23-15, Eagle Contamination Area • 09-99-01, Atmospheric Test Site B-9A These sites are being investigated because existing information on the nature and extent of potential contamination is insufficient to evaluate and recommend corrective action alternatives (CAAs). Additional information will be obtained by conducting a corrective action investigation before evaluating CAAs and selecting the appropriate corrective action for each CAS. The results of the field investigation will support a defensible evaluation of viable CAAs that will be presented in the Corrective Action Decision Document. The sites will be investigated based on the data quality objectives (DQOs) developed on April 30, 2012, by representatives of the Nevada Division of Environmental Protection and the U.S. Department of Energy (DOE), National Nuclear Security Administration Nevada Site Office. The DQO process was used to identify and define the type, amount, and quality of data needed to develop and evaluate appropriate corrective actions for CAU 570. The site investigation process will also be conducted in accordance with the Soils Activity Quality Assurance Plan, which establishes requirements, technical planning, and general quality practices to be applied to this activity. The presence and nature of contamination at CAU 570 will be evaluated based on information collected from a field investigation. Radiological contamination will be evaluated based on a comparison of the total effective dose at sample locations to the dose-based final action level. The total effective dose will be calculated as the total of separate estimates of internal and external dose. Results from the analysis of soil samples will be used to calculate internal radiological dose. Thermoluminescent dosimeters placed near the center of each sample location will be used to measure external radiological dose. Appendix A provides a detailed discussion of the DQO methodology and the DQOs specific to each CAS.

Patrick Matthews

2012-08-01T23:59:59.000Z

46

Corrective Action Investigation Plan for Corrective Action Unit 105: Area 2 Yucca Flat Atmospheric Test Sites Nevada National Security Site, Nevada, Revision 0  

SciTech Connect (OSTI)

Corrective Action Unit (CAU) 105 is located in Area 2 of the Nevada National Security Site, which is approximately 65 miles northwest of Las Vegas, Nevada. CAU 105 is a geographical grouping of sites where there has been a suspected release of contamination associated with atmospheric nuclear testing. This document describes the planned investigation of CAU 105, which comprises the following corrective action sites (CASs): • 02-23-04, Atmospheric Test Site - Whitney • 02-23-05, Atmospheric Test Site T-2A • 02-23-06, Atmospheric Test Site T-2B • 02-23-08, Atmospheric Test Site T-2 • 02-23-09, Atmospheric Test Site - Turk These sites are being investigated because existing information on the nature and extent of potential contamination is insufficient to evaluate and recommend corrective action alternatives (CAAs). Additional information will be obtained by conducting a corrective action investigation before evaluating CAAs and selecting the appropriate corrective action for each CAS. The results of the field investigation will support a defensible evaluation of viable CAAs that will be presented in the Corrective Action Decision Document. The sites will be investigated based on the data quality objectives (DQOs) developed on April 30, 2012, by representatives of the Nevada Division of Environmental Protection and the U.S. Department of Energy (DOE), National Nuclear Security Administration Nevada Site Office. The DQO process was used to identify and define the type, amount, and quality of data needed to develop and evaluate appropriate corrective actions for CAU 105. The site investigation process will also be conducted in accordance with the Soils Activity Quality Assurance Plan, which establishes requirements, technical planning, and general quality practices to be applied to this activity. The potential contamination sources associated with all CAU 105 CASs are from atmospheric nuclear testing activities. The presence and nature of contamination at CAU 105 will be evaluated based on information collected from a field investigation. Radiological contamination will be evaluated based on a comparison of the total effective dose at sample locations to the dose-based final action level. The total effective dose will be calculated as the total of separate estimates of internal and external dose. Results from the analysis of soil samples will be used to calculate internal radiological dose. Thermoluminescent dosimeters placed at the center of each sample location will be used to measure external radiological dose. Appendix A provides a detailed discussion of the DQO methodology and the DQOs specific to each CAS. This Corrective Action Investigation Plan has been developed in accordance with the Federal Facility Agreement and Consent Order that was agreed to by the State of Nevada; DOE, Environmental Management; U.S. Department of Defense; and DOE, Legacy Management. Under the Federal Facility Agreement and Consent Order, this Corrective Action Investigation Plan will be submitted to the Nevada Division of Environmental Protection for approval. Fieldwork will be conducted after the plan is approved.

Patrick Matthews

2012-09-01T23:59:59.000Z

47

Atmospheric Radiation Measurement (ARM) Data from Los Angeles, California, to Honolulu, Hawaii for the Marine ARM GPCI Investigation of Clouds (MAGIC) Field Campaign (an AMF2 Deployment)  

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

From October 2012 through September 2013, the second ARM Mobile Facility (AMF2) was deployed on the container ship Spirit, operated by Horizon Lines, for the Marine ARM GPCI* Investigation of Clouds (MAGIC) field campaign. During approximately 20 round trips between Los Angeles, California, and Honolulu, Hawaii, AMF2 obtained continuous on-board measurements of cloud and precipitation, aerosols, and atmospheric radiation; surface meteorological and oceanographic variables; and atmospheric profiles from weather balloons launched every six hours. During two two-week intensive observational periods in January and July 2013, additional instruments were deployed and balloon soundings were be increased to every three hours. These additional data provided a more detailed characterization of the state of the atmosphere and its daily cycle during two distinctly different seasons. The primary objective of MAGIC was to improve the representation of the stratocumulus-to-cumulus transition in climate models. AMF2 data documented the small-scale physical processes associated with turbulence, convection, and radiation in a variety of marine cloud types.

48

Corrective Action Investigation Plan for Corrective Action Unit 106: Areas 5, 11 Frenchman Flat Atmospheric Sites, Nevada National Security Site, Nevada  

SciTech Connect (OSTI)

Corrective Action Unit 106 comprises the four corrective action sites (CASs) listed below: • 05-20-02, Evaporation Pond • 05-23-05, Atmospheric Test Site - Able • 05-45-04, 306 GZ Rad Contaminated Area • 05-45-05, 307 GZ Rad Contaminated Area These sites are being investigated because existing information on the nature and extent of potential contamination is insufficient to evaluate and recommend corrective action alternatives (CAAs). Additional information will be obtained by conducting a corrective action investigation before evaluating CAAs and selecting the appropriate corrective action for each CAS. The results of the field investigation will support a defensible evaluation of viable CAAs that will be presented in the Corrective Action Decision Document. The sites will be investigated based on the data quality objectives (DQOs) developed on January 19, 2010, by representatives of the Nevada Division of Environmental Protection and the U.S. Department of Energy (DOE), National Nuclear Security Administration Nevada Site Office. The DQO process was used to identify and define the type, amount, and quality of data needed to develop and evaluate appropriate corrective actions for CAU 106. The presence and nature of contamination at CAU 106 will be evaluated based on information collected from a field investigation. The CAU includes land areas impacted by the release of radionuclides from groundwater pumping during the Radionuclide Migration study program (CAS 05-20-02), a weapons-related airdrop test (CAS 05-23-05), and unknown support activities at two sites (CAS 05-45-04 and CAS 05-45-05). The presence and nature of contamination from surface-deposited radiological contamination from CAS 05-23-05, Atmospheric Test Site - Able, and other types of releases (such as migration and excavation as well as any potential releases discovered during the investigation) from the remaining three CASs will be evaluated using soil samples collected from the locations most likely containing contamination, if present. Appendix A provides a detailed discussion of the DQO methodology and the DQOs specific to each CAS. The scope of the corrective action investigation for CAU 106 includes the following activities: • Conduct radiological surveys. • Collect and submit environmental samples for laboratory analysis to determine internal dose rates and the presence of contaminants of concern. • If contaminants of concern are present, collect additional samples to define the extent of the contamination and determine the area where the total effective dose at the site exceeds final action levels (i.e., corrective action boundary). • Collect samples of investigation-derived waste, as needed, for waste management purposes.

Patrick Matthews

2011-07-01T23:59:59.000Z

49

Detailed investigation of a pulverized fuel swirl flame in CO{sub 2}/O{sub 2} atmosphere  

SciTech Connect (OSTI)

A novel approach to oxycoal flame stabilization has been developed at the Institute of Heat and Mass Transfer at RWTH Aachen University [D. Toporov, M. Foerster, R. Kneer, in: Third Int. Conf. on Clean Coal Technologies for Our Future, Cagliari, Sardinia, Italy, 15-17 May 2007]. The swirl burner design and its operating conditions have been adjusted in order to enforce CO formation thus stabilizing the flame and obtaining a full burnout at levels of O{sub 2} content in the O{sub 2}/CO{sub 2} mixture similar to those in air. The paper presents results of detailed numerical and experimental investigations of a stable oxy-fired pulverized coal swirl flame (type-2) obtained with a 21 vol% O{sub 2} concentration. The combustion tests were performed in a vertical pilot-scale furnace (100 kW{sub th}) in the framework of the OXYCOAL-AC research project aiming to develop a membrane-based oxyfuel process. The experimental results concerning gas velocities, gas and particle temperatures, and gas compositions are presented and discussed, focusing on the underlying mechanisms as well as on the aerodynamics of the oxycoal flame. A comparison between measurements and simulations has shown the validity of the numerical method used. The reported data set can be used for validation of numerical models developed for prediction of oxyfuel combustion. (author)

Toporov, D.; Bocian, P.; Heil, P.; Kellermann, A.; Stadler, H.; Tschunko, S.; Foerster, M.; Kneer, R. [Institute of Heat and Mass Transfer, RWTH Aachen University, Eilfschornsteinstrasse 18, D-52056 Aachen (Germany)

2008-12-15T23:59:59.000Z

50

Corrective Action Investigation Plan for Corrective Action Unit 370: T-4 Atmospheric Test Site, Nevada Test Site, Nevada with ROTC-1, Revision 0  

SciTech Connect (OSTI)

Corrective Action Unit (CAU) 370 is located in Area 4 of the Nevada Test Site, which is approximately 65 miles northwest of Las Vegas, Nevada. Corrective Action Unit 370 is comprised of Corrective Action Site (CAS) 04-23-01, Atmospheric Test Site T-4. This site is being investigated because existing information on the nature and extent of potential contamination is insufficient to evaluate and/or implement a corrective action. Additional information will be obtained by conducting a corrective action investigation (CAI) before evaluating corrective action alternatives and selecting the appropriate corrective action for this CAS. The results of the field investigation will support a defensible evaluation of viable corrective action alternatives that will be presented in the Corrective Action Decision Document. The investigation results may also be used to evaluate improvements in the Soils Project strategy to be implemented. The site will be investigated based on the data quality objectives (DQOs) developed on December 10, 2007, by representatives of the Nevada Division of Environmental Protection; U.S. Department of Energy (DOE), National Nuclear Security Administration Nevada Site Office; Desert Research Institute; Stoller-Navarro Joint Venture; and National Security Technologies, LLC. The DQO process was used to identify and define the type, amount, and quality of data needed to develop and evaluate appropriate corrective actions for CAU 370. Appendix A provides a detailed discussion of the DQO methodology and the DQOs specific to the CAS. The scope of the CAI for CAU 370 includes the following activities: • Move surface debris and/or materials, as needed, to facilitate sampling. • Conduct radiological surveys. • Perform field screening. • Collect and submit environmental samples for laboratory analysis to determine whether contaminants of concern are present. • If contaminants of concern are present, collect samples to define the extent of the contamination. • Collect samples of investigation-derived waste including debris deemed to be potential source material, as needed, for waste management purposes.

Pat Matthews

2008-04-01T23:59:59.000Z

51

Corrective Action Investigation Plan for Corrective Action Unit 106: Areas 5, 11 Frenchman Flat Atmospheric Sites, Nevada Test Site, Nevada, Revision 0  

SciTech Connect (OSTI)

Corrective Action Unit (CAU) 106 is located in Area 5 of the Nevada Test Site, which is approximately 65 miles northwest of Las Vegas, Nevada. Corrective Action Unit 106 comprises the five corrective action sites (CASs) listed below: •05-23-02, GMX Alpha Contaminated Area •05-23-05, Atmospheric Test Site - Able •05-45-01, Atmospheric Test Site - Hamilton •05-45-04, 306 GZ Rad Contaminated Area •05-45-05, 307 GZ Rad Contaminated Area These sites are being investigated because existing information on the nature and extent of potential contamination is insufficient to evaluate and recommend corrective action alternatives (CAAs). Additional information will be obtained by conducting a corrective action investigation before evaluating CAAs and selecting the appropriate corrective action for each CAS. The results of the field investigation will support a defensible evaluation of viable CAAs that will be presented in the Corrective Action Decision Document. The sites will be investigated based on the data quality objectives (DQOs) developed on January 19, 2010, by representatives of the Nevada Division of Environmental Protection and the U.S. Department of Energy (DOE), National Nuclear Security Administration Nevada Site Office. The DQO process was used to identify and define the type, amount, and quality of data needed to develop and evaluate appropriate corrective actions for CAU 106. The presence and nature of contamination at CAU 106 will be evaluated based on information collected from a field investigation. The CAU includes land areas impacted by the release of radionuclides from a weapons-effect tower test (CAS 05-45-01), a weapons-related airdrop test (CAS 05-23-05), “equation of state” experiments (CAS 05-23-02), and unknown support activities at two sites (CAS 05-45-04 and CAS 05-45-05). Surface-deposited radiological contamination will be evaluated based on a comparison of the total effective dose (TED) at sample plot locations to the dose-based final action level. The TED will be calculated as the total of separate estimates of internal and external doses. Results from the analysis of soil samples collected from sample plots will be used to calculate internal radiological dose. Thermoluminescent dosimeters placed at the center of each sample plot will be used to measure external radiological dose. The presence and nature of contamination from other types of releases (such as migration and excavation as well as any potential releases discovered during the investigation) will be evaluated using soil samples collected from the locations most likely containing contamination, if present. Appendix A provides a detailed discussion of the DQO methodology and the DQOs specific to each CAS. The scope of the corrective action investigation for CAU 106 includes the following activities: •Conduct radiological surveys. •Collect and submit environmental samples for laboratory analysis to determine internal dose rates and the presence of contaminants of concern. •If contaminants of concern are present, collect additional samples to define the extent of the contamination and determine the area where TED at the site exceeds final action levels (i.e., corrective action boundary). •Collect samples of investigation-derived waste, as needed, for waste management purposes.

Patrick Matthews

2010-04-01T23:59:59.000Z

52

Azores Global Atmosphere Monitoring Complex 1. INTRODUCTION  

E-Print Network [OSTI]

to the accuracy of European weather forecasts. Today, they provide a unique base for studies of atmospheric levels. Measurements in the free troposphere (FT) are particularly useful, because trace gas and particle

Honrath, Richard E.

53

Investigation of Trace Uranium in Biological Matrices  

E-Print Network [OSTI]

complex. As a result, the data varies in its breadth and quality due to the variety of sources.[41-44] Additional studies have been undertaken to understand the effects of using depleted uranium munitions in war and the accompanying exposures.[45...

Miller, James Christopher

2013-05-31T23:59:59.000Z

54

E-Print Network 3.0 - atmospheric deposition Sample Search Results  

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

5 Chapter 2: Sources and Deposition of Trace Metals 2.1 Main Sources of Atmospheric Pollution...7 Summary: 5 Chapter 2: Sources and...

55

E-Print Network 3.0 - analysis atmospheric deposition Sample...  

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

3 Chapter 2: Sources and Deposition of Trace Metals 2.1 Main Sources of Atmospheric Pollution...7 Summary: and dry deposition analysis...

56

Final report for DOE Grant No. DE-FG02-07ER64404 - Field Investigations of Microbially Facilitated Calcite Precipitation for Immobilization of Strontium-90 and Other Trace Metals in the Subsurface  

SciTech Connect (OSTI)

Subsurface radionuclide and metal contaminants throughout the U.S. Department of Energy (DOE) complex pose one of DOE�¢����s greatest challenges for long-term stewardship. One promising stabilization mechanism for divalent ions, such as the short-lived radionuclide 90Sr, is co-precipitation in calcite. We have previously found that that nutrient addition can stimulate microbial ureolytic activity that this activity accelerates calcite precipitation and co-precipitation of Sr, and that higher calcite precipitation rates can result in increased Sr partitioning. We have conducted integrated field, laboratory, and computational research to evaluate the relationships between ureolysis and calcite precipitation rates and trace metal partitioning under environmentally relevant conditions, and investigated the coupling between flow/flux manipulations and precipitate distribution. A field experimental campaign conducted at the Integrated Field Research Challenge (IFRC) site located at Rifle, CO was based on a continuous recirculation design; water extracted from a down-gradient well was amended with urea and molasses (a carbon and electron donor) and re-injected into an up-gradient well. The goal of the recirculation design and simultaneous injection of urea and molasses was to uniformly accelerate the hydrolysis of urea and calcite precipitation over the entire inter-wellbore zone. The urea-molasses recirculation phase lasted, with brief interruptions for geophysical surveys, for 12 days followed by long-term monitoring which continued for 13 months. Following the recirculation phase we found persistent increases in urease activity (as determined from 14C labeled laboratory urea hydrolysis rates) in the upper portion of the inter-wellbore zone. We also observed an initial increase (approximately 2 weeks) in urea concentration associated with injection activities followed by decreasing urea concentration and associated increases in ammonium and dissolved inorganic carbon (DIC) following the termination of injection. Based on the loss of urea and the appearance of ammonium, a first order rate constant for urea hydrolysis of 0.18 day-1 rate with an associate Rf for ammonium of 11 were estimated. This rate constant is approximately 6 times higher than estimated for previous field experiments conducted in eastern Idaho. Additionally, DIC carbon isotope ratios were measured for the groundwater. Injected urea had a ���´13C of 40.7���±0.4 �¢���° compared to background groundwater DIC of ���´13C of -16.6���±0.2�¢���°. Observed decreases in groundwater DIC ���´13C of up to -19.8�¢���° followed temporal trends similar to those observed for ammonium and suggest that both the increase in ammonium and the sift in ���´13C are the result of urea hydrolysis. Although direct observation of calcite precipitation was not possible because of the high pre-existing calcite content in the site sediments, an observed ���´13C decrease for solid carbonates from sediment samples collect following urea injection (compared to pre-injection values) is likely the result of the incorporation of inorganic carbon derived from urea hydrolysis into newly formed solid carbonates.

Smith, Robert W; Fujita, Yoshiko; Ginn, Timothy R; Hubbard, Susan S

2012-10-12T23:59:59.000Z

57

COURSE NUMBER COURSE TITLE, PROFESSOR MAC 503, Introduction to Marine and Atmospheric Chemistry  

E-Print Network [OSTI]

Professors F. Millero and E. Atlas COURSE GOALS: Introduction to Marine and Atmospheric Chemistry. The course/Circulation/Transport 16. Trace Gas Exchanges and Biogeochemical Cycles;Biosphere-Atmosphere Exchanges 17. Biogeochem (cont

Miami, University of

58

Atmospheric Neutrinos  

E-Print Network [OSTI]

This paper is a brief overview of the theory and experimental data of atmospheric neutrino production at the fiftieth anniversary of the experimental discovery of neutrinos.

Thomas K. Gaisser

2006-12-11T23:59:59.000Z

59

Deriving emissions time series from sparse atmospheric mole fractions  

E-Print Network [OSTI]

A growth-based Bayesian inverse method is presented for deriving emissions of atmospheric trace species from temporally sparse measurements of their mole fractions. This work is motivated by many recent studies that have ...

Rigby, Matthew

60

atmospheric trace gases: Topics by E-print Network  

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

it back down to the Earth. This phenomenon, called the greenhouse. Without the greenhouse effect, the Earth's average surface temperature would be about 60 Fahrenheit 29...

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


61

Corrective Action Investigation Plan for Corrective Action Unit 569: Area 3 Yucca Flat Atmospheric Test Sites Nevada National Security Site, Nevada, Revision 0  

SciTech Connect (OSTI)

Corrective Action Unit (CAU) 569 is located in Area 3 of the Nevada National Security Site, which is approximately 65 miles northwest of Las Vegas, Nevada. Corrective Action Unit 569 comprises the nine numbered corrective action sites (CASs) and one newly identified site listed below: (1) 03-23-09, T-3 Contamination Area (hereafter referred to as Annie, Franklin, George, and Moth); (2) 03-23-10, T-3A Contamination Area (hereafter referred to as Harry and Hornet); (3) 03-23-11, T-3B Contamination Area (hereafter referred to as Fizeau); (4) 03-23-12, T-3S Contamination Area (hereafter referred to as Rio Arriba); (5) 03-23-13, T-3T Contamination Area (hereafter referred to as Catron); (6) 03-23-14, T-3V Contamination Area (hereafter referred to as Humboldt); (7) 03-23-15, S-3G Contamination Area (hereafter referred to as Coulomb-B); (8) 03-23-16, S-3H Contamination Area (hereafter referred to as Coulomb-A); (9) 03-23-21, Pike Contamination Area (hereafter referred to as Pike); and (10) Waste Consolidation Site 3A. Because CAU 569 is a complicated site containing many types of releases, it was agreed during the data quality objectives (DQO) process that these sites will be grouped. These sites are being investigated because existing information on the nature and extent of potential contamination is insufficient to evaluate and recommend corrective action alternatives (CAAs). Additional information will be obtained by conducting a corrective action investigation before evaluating CAAs and selecting the appropriate corrective action for each study group. The results of the field investigation will support a defensible evaluation of viable CAAs that will be presented in the Corrective Action Decision Document. The sites will be investigated based on the DQOs developed on September 26, 2011, by representatives of the Nevada Division of Environmental Protection and the U.S. Department of Energy (DOE), National Nuclear Security Administration Nevada Site Office. The DQO process was used to identify and define the type, amount, and quality of data needed to develop and evaluate appropriate corrective actions for CAU 569. The presence and nature of contamination at CAU 569 will be evaluated based on information collected from a field investigation. Radiological contamination will be evaluated based on a comparison of the total effective dose (TED) at sample locations to the dose-based final action level (FAL). The TED will be calculated as the total of separate estimates of internal and external dose. Results from the analysis of soil samples will be used to calculate internal radiological dose. Thermoluminescent dosimeters placed at the center of each sample location will be used to measure external radiological dose. A field investigation will be performed to define any areas where TED exceeds the FAL and to determine whether contaminants of concern are present at the site from other potential releases. The presence and nature of contamination from other types of releases (e.g., excavation, migration, and any potential releases discovered during the investigation) will be evaluated using soil samples collected from biased locations indicating the highest levels of contamination. Appendix A provides a detailed discussion of the DQO methodology and the objectives specific to each study group.

Patrick Matthews; Christy Sloop

2012-02-01T23:59:59.000Z

62

Research by BNL investigators was performed under the auspices of the U.S. Department of Energy under Contract No. DE-AC02-DOE research on atmospheric aerosols  

E-Print Network [OSTI]

are an programs dealing with atmospheric science, subsurface science, environmental radon, ocean margins Division, the Atmospheric Radiation Measurement (ARM) Program and the Atmospheric Chemistry Program (ACP--Atmospheric Radiation Measurement Program. The ARM Program is the Department's major research activity focusing

63

Using Hierarchical Simplicial Meshes to Render Atmospheric Effects  

E-Print Network [OSTI]

Using Hierarchical Simplicial Meshes to Render Atmospheric Effects F. Betul Atalay David M. Mount natural phenomena. An important problem in this area is that of rendering scenes containing atmospheric and smoke. Generating photorealistic renderings through ray-tracing is computationally very demanding

Atalay, F. Betül

64

The Fidelity and Trace Norm Distances for Quantifying Coherence  

E-Print Network [OSTI]

We investigate the coherence measures induced by fidelity and trace norm, based on the recent proposed coherence quantification in [Phys. Rev. Lett. 113, 140401, 2014]. We show that the fidelity of coherence does not in general satisfy the monotonicity requirement as a measure of coherence under the subselection of measurements condition. We find that the trace norm of coherence can act as a measure of coherence for qubit case and some special class of qutrits.

Lian-He Shao; Zhengjun Xi; Heng Fan; Yongming Li

2014-10-30T23:59:59.000Z

65

The role of trace gas flux networks in biogeosciences  

SciTech Connect (OSTI)

Vast networks of meteorological sensors ring the globe, providing continuous measurements of an array of atmospheric state variables such as temperature, humidity, rainfall, and the concentration of carbon dioxide [New etal., 1999; Tans etal., 1996]. These measurements provide input to weather and climate models and are key to detecting trends in climate, greenhouse gases, and air pollution. Yet to understand how and why these atmospheric state variables vary in time and space, biogeoscientists need to know where, when, and at what rates important gases are flowing between the land and the atmosphere. Tracking trace gas fluxes provides information on plant or microbial metabolism and climate-ecosystem interactions. The existence of trace gas flux networks is a relatively new phenomenon, dating back to research in 1984. The first gas flux measurement networks were regional in scope and were designed to track pollutant gases such as sulfur dioxide, ozone, nitric acid, and nitrogen dioxide. Atmospheric observations and model simulations were used to infer the depositional rates of these hazardous chemicals [Fowler etal., 2009; Meyers etal., 1991]. In the late 1990s, two additional trace gas flux measurement networks emerged. One, the United States Trace Gas Network (TRAGNET), was a short-lived effort that measured trace gas emissions from the soil and plants with chambers distributed throughout the country [Ojima etal., 2000]. The other, FLUXNET, was an international endeavor that brought many regional networks together to measure the fluxes of carbon dioxide, water vapor, and sensible heat exchange with the eddy covariance technique [Baldocchi etal., 2001]. FLUXNET, which remains active today, currently includes more than 400 tower sites, dispersed across most of the world's climatic zones and biomes, with sites in North and South America, Europe, Asia, Africa, and Australia. More recently, several specialized networks have emerged, including networks dedicated to urban areas (Urban Fluxnet), nitrogen compounds in Europe (NitroEurope), and methane (MethaneNet). Technical Aspects of Flux Networks Eddy covariance flux measurements are the preferred method by which biogeoscientists measure trace gas exchange between ecosystems and the atmosphere [Baldocchi, 2003].

Baldocch, Dennis [Department of Environmental Science, Policy and Management, University of California, Berkeley,; Reichstein, Markus [Max Planck Institute for Biogeochemistry; Papale, D. [University of Tuscia; KOTEEN, LAURIE [University of California, Berkeley; VARGAS, RODRIGO [Ensenada Center for Scientific Research and Higher Education (CICESE); Agarwal, D.A [Lawrence Berkeley National Laboratory (LBNL); Cook, Robert B [ORNL

2012-01-01T23:59:59.000Z

66

Heat-Traced Fluid Transfer Lines  

E-Print Network [OSTI]

HEAT-TRACED FLUID TRANSFER LINES Robert E. Schilling, P.E. Eaton Corporation Aurora, Ohio This paper discusses basic considerations in designing a heat tracing system using either steam or electrical tracing. Four basic reasons to heat...

Schilling, R. E.

1984-01-01T23:59:59.000Z

67

Atmospheric propagation of THz radiation.  

SciTech Connect (OSTI)

In this investigation, we conduct a literature study of the best experimental and theoretical data available for thin and thick atmospheres on THz radiation propagation from 0.1 to 10 THz. We determined that for thick atmospheres no data exists beyond 450 GHz. For thin atmospheres data exists from 0.35 to 1.2 THz. We were successful in using FASE code with the HITRAN database to simulate the THz transmission spectrum for Mauna Kea from 0.1 to 2 THz. Lastly, we successfully measured the THz transmission spectra of laboratory atmospheres at relative humidities of 18 and 27%. In general, we found that an increase in the water content of the atmosphere led to a decrease in the THz transmission. We identified two potential windows in an Albuquerque atmosphere for THz propagation which were the regions from 1.2 to 1.4 THz and 1.4 to 1.6 THz.

Wanke, Michael Clement; Mangan, Michael A.; Foltynowicz, Robert J.

2005-11-01T23:59:59.000Z

68

A SEARCH FOR MAGNESIUM IN EUROPA'S ATMOSPHERE  

SciTech Connect (OSTI)

Europa's tenuous atmosphere results from sputtering of the surface. The trace element composition of its atmosphere is therefore related to the composition of Europa's surface. Magnesium salts are often invoked to explain Galileo Near Infrared Mapping Spectrometer spectra of Europa's surface, thus magnesium may be present in Europa's atmosphere. We have searched for magnesium emission in the Hubble Space Telescope Faint Object Spectrograph archival spectra of Europa's atmosphere. Magnesium was not detected and we calculate an upper limit on the magnesium column abundance. This upper limit indicates that either Europa's surface is depleted in magnesium relative to sodium and potassium, or magnesium is not sputtered as efficiently resulting in a relative depletion in its atmosphere.

Hoerst, S. M. [Cooperative Institute for Research in Environmental Sciences, University of Colorado-Boulder, Boulder, CO (United States); Brown, M. E., E-mail: sarah.horst@colorado.edu [Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA (United States)

2013-02-20T23:59:59.000Z

69

Fate of trace elements in UK coals during gasification processes  

SciTech Connect (OSTI)

Five UK coals were selected to cover the range of mineral matter and ash contents typically encountered in UK bituminous coals. Trace element analysis was performed on both the whole coals and size separated fractions using ICP analysis for 21 trace elements, including Be, Cr, Co, Ni, As, Cd, Sb, Hg, and Pb, elements deemed to be the most environmentally hazardous. Small quantities of each coal were gasified in a laboratory gasifier in an atmosphere of N{sub 2} containing 15% O{sub 2}. Samples of bed ash, cyclone ash, and a fine gas-filtered ash were collected and analyzed to determine the partition of the trace elements between the gasification products. Mass balance calculations showed that the recovery of the trace elements varied from 20 to 97%; the low recovery of some trace elements highlighting the difficulties of collecting representative samples from a laboratory system. A parallel study on samples taken from a pilot plant gasifier showed significantly higher recovery rates, indicating the value of larger scale trials.

Bushell, A.J.; Williamson, J. [Imperial College of Science, Technology and Medicine, London (United Kingdom)

1996-12-31T23:59:59.000Z

70

Trace elements in oil shale. Progress report, 1979-1980  

SciTech Connect (OSTI)

The purpose of this research program is to understand the potential impact of an oil shale industry on environmental levels of trace contaminants in the region. The program involves a comprehensive study of the sources, release mechanisms, transport, fate, and effects of toxic trace chemicals, principally the trace elements, in an oil shale industry. The overall objective of the program is to evaluate the environmental and health consequences of the release of toxic trace elements by shale and oil production and use. The baseline geochemical survey shows that stable trace elements maps can be constructed for numerous elements and that the trends observed are related to geologic and climatic factors. Shale retorted by above-ground processes tends to be very homogeneous (both in space and in time) in trace element content. Leachate studies show that significant amounts of B, F, and Mo are released from retorted shales and while B and Mo are rapidly flushed out, F is not. On the other hand, As, Se, and most other trace elements are not present in significant quantities. Significant amounts of F and B are also found in leachates of raw shales. Very large concentrations of reduced sulfur species are found in leachates of processed shale. Very high levels of B and Mo are taken up in some plants growing on processed shale with and without soil cover. There is a tendency for some trace elements to associate with specific organic fractions, indicating that organic chelation or complexation may play an important role. Many of the so-called standard methods for analyzing trace elements in oil shale-related materials are inadequate. A sampling manual is being written for the environmental scientist and practicing engineer. A new combination of methods is developed for separating the minerals in oil shale into different density fractions. Microbial investigations have tentatively identified the existence of thiobacilli in oil shale materials such as leachates. (DC)

Chappell, W R

1980-01-01T23:59:59.000Z

71

A white paper on Effects of Anthropogenic Pollution on the Atmospheric  

E-Print Network [OSTI]

1 A white paper on Effects of Anthropogenic Pollution on the Atmospheric Chemistry of the Tropical Brazilian Partner Organizations National Institute for Amazonian Research (INPA)1 The Large-Scale Biosphere-Atmosphere by the atmospheric oxidation of trace gases to low volatility compounds (Chen et al. 2009). These products can

72

Atmosphere Model  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth (AOD)ProductssondeadjustsondeadjustAbout theOFFICEAmesApplication2ArgonneAssemblyDemandPlasma4 Medicare5Dust

73

A method of tracing sediment movement on the Texas Gulf Coast  

E-Print Network [OSTI]

57 60 65 70 81 90 V. CONCLUSIONS AND RZCOlIPirJVDATIONS . . . . . 97 Conclusions. Recommendations. REFERENCES. APPZNDICES- 1. Coating Technique. 2. Equipment Used ~ 97 100 . 10$ 109 110 112 LIST OF TABLES Table 1. Radioactive... investigations are those associ-. ated with measuring amounts of material trapped by natural 'or artificial barriers along the shoreline. Qualitative studies include tracing of radioactive sediments, tracing of natural heavy minerals, and tracing...

Ward, Michael

1970-01-01T23:59:59.000Z

74

Atmospheric Aerosol Systems | EMSL  

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

Science Themes Atmospheric Aerosol Systems Overview Atmospheric Aerosol Systems Biosystem Dynamics & Design Energy Materials & Processes Terrestrial & Subsurface Ecosystems...

75

Trace fossil assemblages in selected shelf sandstones  

E-Print Network [OSTI]

Harris. Thank you, good luck in the future, and may God bless you all. vi TABLE OF CONTENTS INTRODUCTION Background Objectives Methods . TRACE FOSSIL IDENTIFICATION IN CORES Introduction Description of Selected Trace Fossils TRACE FOSSILS..., the trace foss11 distributions agreed with those of the ichnofacies described by Seilacher (1978) and with the known environmental distributions compiled by Chamberlain (1978), but many trace fossils have widespread occurrences that limit...

Locke, Kathleen Ann

1983-01-01T23:59:59.000Z

76

of SOHO `Waves, Oscillations SmallScale Transient in Solar Atmosphere  

E-Print Network [OSTI]

of SOHO `Waves, Oscillations Small­Scale Transient in Solar Atmosphere: A Joint from SOHO TRACE identified from SUMER Atlas Curdt (2001). studied shifts widths 703.87 � 8 � 4 coronal ## 706.02 �(# 6

77

E-Print Network 3.0 - atmospheric gas annual Sample Search Results  

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

reactive trace gas with a current lifetime in the atmosphere of w... gas'. The greenhouse effect of one molecule of CH4 ... Source: USGS Western Region Coastal and Marine...

78

E-Print Network 3.0 - atmospheric gas analyzer Sample Search...  

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

reactive trace gas with a current lifetime in the atmosphere of w... gas'. The greenhouse effect of one molecule of CH4 ... Source: USGS Western Region Coastal and Marine...

79

CIRRICULUM VITAE: TOM BREIDER Atmospheric Chemistry Post-Doctoral Research Fellow  

E-Print Network [OSTI]

to changing anthropogenic and dynamic biogenic emissions of trace gases and aerosols. These chemistry and trace gas factors affecting the number concentration of atmospheric Aitken (Dp=50 nm) particles. Discuss., 3, 1185-1221, 2010 4) Hossani, R., M. P. Chipperfield, W. Feng, T. J. Breider, E. Atlas, S. A

Jacob, Daniel J.

80

Distributed trace using central performance counter memory  

DOE Patents [OSTI]

A plurality of processing cores, are central storage unit having at least memory connected in a daisy chain manner, forming a daisy chain ring layout on an integrated chip. At least one of the plurality of processing cores places trace data on the daisy chain connection for transmitting the trace data to the central storage unit, and the central storage unit detects the trace data and stores the trace data in the memory co-located in with the central storage unit.

Satterfield, David L; Sexton, James C

2013-10-22T23:59:59.000Z

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


81

Distributed trace using central performance counter memory  

DOE Patents [OSTI]

A plurality of processing cores, are central storage unit having at least memory connected in a daisy chain manner, forming a daisy chain ring layout on an integrated chip. At least one of the plurality of processing cores places trace data on the daisy chain connection for transmitting the trace data to the central storage unit, and the central storage unit detects the trace data and stores the trace data in the memory co-located in with the central storage unit.

Satterfield, David L.; Sexton, James C.

2013-01-22T23:59:59.000Z

82

Ray Tracing JELLO Brand Paul S. Heckbert  

E-Print Network [OSTI]

Ray Tracing JELL­O ® Brand Gelatin Paul S. Heckbert Dessert Foods Division Pixar San Rafael, CA ABSTRACT Ray tracing has established itself in recent years as the most general image synthesis algorithm for ray tracing Jell­O ® brand gelatin. We believe the method may have application to other brands

Treuille, Adrien

83

Ultra-Trace Forensics Science Center (UFSC) | ORNL  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear SecurityTensile Strain Switched Ferromagnetism in Layeredof2014 EIA Energy40081A UmtedGrishamMARCUgoUltra-Trace

84

Trace Explosive Detection Using Nanosensors  

SciTech Connect (OSTI)

Selective and sensitive detection of explosives is very important in countering terrorist threats. Detecting trace explosives has become a very complex and expensive endeavor because of a number of factors, such as the wide variety of materials that can be used as explosives, the lack of easily detectable signatures, the vast number of avenues by which these weapons can be deployed, and the lack of inexpensive sensors with high sensitivity and selectivity. High sensitivity and selectivity, combined with the ability to lower the deployment cost of sensors using mass production, is essential in winning the war on explosives-based terrorism. Nanosensors have the potential to satisfy all the requirements for an effective platform for the trace detection of explosives.

Senesac, Larry R [ORNL; Thundat, Thomas George [ORNL

2008-01-01T23:59:59.000Z

85

Interactive influences of bioactive trace metals on biological production in oceanic waters  

SciTech Connect (OSTI)

The authors present an overview of the oceanic chemistries of the bioactive trace metals, Mn, Fe, Co, Ni, Cu, and Zn; the authors combine field data with results from laboratory phytoplankton culture-trace metal studies and speculate on the potential influences of these trace metals on oceanic plankton production and species composition. Most field studies have focused on the effects of single metals. However, they propose that synergistic and antagonistic interactions between multiple trace metals could be very important in the oceans. Trace metal antagonisms that may prove particularly important are those between Cu and the potential biolimiting metals Fe, Mn, and Zn. These antagonistic interactions could have the greatest influence on biological productivity in areas of the open ocean isolated from terrestrial inputs, such as the remote high nutrient regions of the Pacific and Antarctic Oceans. The emerging picture of trace metal-biota interactions in these oceanic areas is one in which biology strongly influences distribution and chemical speciation of all these bioactive trace metals. It also seems likely that many of these bioactive trace metals and their speciation may influence levels of primary productivity, species composition, and trophic structure. Future investigations should give more complete consideration to the interactive effects of biologically important trace metals.

Bruland, K.W.; Donat, J.R.; Hutchins, D.A. (Univ. of California, Santa Cruz (United States))

1991-12-01T23:59:59.000Z

86

Autonomous microexplosives subsurface tracing system final report.  

SciTech Connect (OSTI)

The objective of the autonomous micro-explosive subsurface tracing system is to image the location and geometry of hydraulically induced fractures in subsurface petroleum reservoirs. This system is based on the insertion of a swarm of autonomous micro-explosive packages during the fracturing process, with subsequent triggering of the energetic material to create an array of micro-seismic sources that can be detected and analyzed using existing seismic receiver arrays and analysis software. The project included investigations of energetic mixtures, triggering systems, package size and shape, and seismic output. Given the current absence of any technology capable of such high resolution mapping of subsurface structures, this technology has the potential for major impact on petroleum industry, which spends approximately $1 billion dollar per year on hydraulic fracturing operations in the United States alone.

Engler, Bruce Phillip; Nogan, John; Melof, Brian Matthew; Uhl, James Eugene; Dulleck, George R., Jr.; Ingram, Brian V.; Grubelich, Mark Charles; Rivas, Raul R.; Cooper, Paul W.; Warpinski, Norman Raymond; Kravitz, Stanley H.

2004-04-01T23:59:59.000Z

87

Atmospheric deposition: sample handling, storage, and analytical procedures for chemical characterization of event-based samples in North Dakota  

SciTech Connect (OSTI)

The North Dakota atmospheric-deposition network uses HASL-type collectors to sample wet and dry deposition on an event basis for analysis of 8 principal mineral, 3 nutrient, and 15 trace constituents. Comparison of the compositions of wet deposition collected in adjacent collectors sampled on weekly and event bases indicates that nonevent sampling leads to significant contamination of wet-deposition samples with dry deposition. Elevation of the collectors 10 feet above ground surface may decrease wind-blown soil contamination significantly. This manual presents a summary of the research procedures adopted by the North Dakota District of the US Geological Survey to investigate the consequences of increased fossil-fuel combustion on the quality of atmospheric deposition. The manual has been tested by field operatives for 3 years and shown to be an effective field guide and management tool. 44 references, 3 figures, 13 tables.

Houghton, R.L.; Berger, M.; Zander, N.; Dutchek, S.K.

1983-01-01T23:59:59.000Z

88

Cosmic-ray strangelets in the Earth's atmosphere  

E-Print Network [OSTI]

If strange quark matter is stable in small lumps, we expect to find such lumps, called ``strangelets'', on Earth due to a steady flux in cosmic rays. Following recent astrophysical models, we predict the strangelet flux at the top of the atmosphere, and trace the strangelets' behavior in atmospheric chemistry and circulation. We show that several strangelet species may have large abundances in the atmosphere; that they should respond favorably to laboratory-scale preconcentration techniques; and that they present promising targets for mass spectroscopy experiments.

B. Monreal

2006-11-03T23:59:59.000Z

89

Trace 700 | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia:FAQ < RAPID Jump to:Seadov Pty LtdSteen,Ltd JumpOperationsInformationRowleyIndianaToyon Power StationTrace

90

Trace elements in coal by glow discharge mass spectrometry  

SciTech Connect (OSTI)

A need and a demand exist for determining trace elements in coal and coal related by-products, especially those elements which may potentially be a health hazard. The provisions of the 1990 clean air act require that the EPA evaluate the emissions of electric utilities for trace elements and other potentially hazardous organic compounds. The coal fired electric utility industry supplies roughly 60% of the total generating capacity of 2,882,525 million kilowatt hours (nearly 3 trillion kilowatt hours) generated in the U.S. This is accomplished by 414 power plants scattered across the country that burned 813,508,000 short tons of coal in 1993. The relative volatility of some inorganic constituents in coal makes them more prone to be emitted to the atmosphere following combustion. The production of analytical data for trace elements is known to be a difficult task in coal and by-products of coal combustion (fly ash, bottom ash, gas streams, etc.), in terms of both sample collection and analytical determinations. There are several common analytical methods available to the analyst to determine trace elements in coal and coal by-products. In general analytical germs, the material to be analyzed can be totally solubilized (or extracted), or the elements analytes can be determined in the material as a solid. A relatively new elemental technique, Glow Discharge Mass Spectrometry (GDMS) can be used with solids as well. This new analytical technique had never before been applied directly to coal. The radio frequency-glow discharge quadropole mass spectrometer was used to analyze coal directly for the first time ever by rf-GDMS. The rf-GDMS technique is described.

Jacobs, M.L.; Wilson, C.R.; Pestovich, J. Jr. [WAL Inc., Wheat Ridge, CO (United States)] [and others

1995-08-01T23:59:59.000Z

91

Radar remote sensing of the lower atmosphere  

E-Print Network [OSTI]

from ray tracing (solid). (d) Clutter power from maximum rayby ray tracing (solid). (d) Clutter power calculated bysolid) and maximum of ray traces (dashed). (d) Clutter power

Karimian, Ali

2012-01-01T23:59:59.000Z

92

Adsorptive Stripping Voltammetric Measurements of Trace Uranium...  

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

Measurements of Trace Uranium at the Bismuth Film Electrode. Abstract: Bismuth-coated carbon-fiber electrodes have been successfully applied for adsorptive-stripping...

93

Geothermal: Sponsored by OSTI -- Trace metal characterization...  

Office of Scientific and Technical Information (OSTI)

Trace metal characterization and speciation in geothermal effluent by multiple scanning anodic stripping voltammetry and atomic absorpotion analysis. Annual progress report...

94

Reactive trace metals in the stratified central North Pacific  

SciTech Connect (OSTI)

Vertical concentration profiles of the dissolved and suspended particulate phases were determined for a suite of reactive trace metals, Al, Fe, Mn, Zn, and Cd, during summertime at a station in the center of the North Pacific gyre. During summer the euphotic zone becomes stratified, forming a shallow (0-25 m), oligotrophic, mixed layer overlying a subsurface (25-140 m), strongly-stratified region. The physical, biological, and chemical structure within the euphotic zone during this period enhanced the effect of atmospheric inputs of Al, Fe, and Mn on mixed layer concentrations. For example, the concentration of dissolved Fe in the surface mixed layer was eighteen times that observed at a depth of 100 m. The observed aeolian signature of these metals matched that predicted from estimates of atmospheric input during the period between the onset of stratification and sampling. The distributions of suspended particulate Al, Fe, and Mn all exhibited minima in the euphotic zone and increased with depth into the main thermocline. Particulate Al and Fe were then uniform with depth below 1000 m before increasing in the near bottom nepheloid layer. Average particulate phase concentrations in intermediate and deep waters of the central North Pacific were 1.0, 0.31, and 0.055 nmol[center dot]kg[sup [minus]1] for Al, Fe, and Mn, respectively. The distribution of particulate Cd exhibited a maximum within the subsurface euphotic zone. Particulate zinc also exhibited a surface maximum, albeit a smaller one. Concentrations of particulate Zn and Cd in intermediate and deep waters were 17 and 0.2 pmol[center dot]kg[sup [minus]1]. Substantial interbasin differences in particulate trace metals occur. Concentrations of suspended particulate Al, Fe, and Mn were three to four times lower in the central North Pacific than recently reported for the central North Atlantic gyre, consistent with differences in atmospheric input to these two regions.

Bruland, K.W. (Univ. of California, Santa Cruz, CA (United States)); Orians, K.J. (Univ. of British Columbia, Vancouver (Canada)); Cowen, J.P. (Univ. of Hawaii, Manoa, HI (United States))

1994-08-01T23:59:59.000Z

95

ISO-SWS calibration and the accurate modelling of cool-star atmospheres - II. General results  

E-Print Network [OSTI]

The fine calibration of the ISO-SWS detectors (Infrared Space Observatory - Short Wavelength Spectrometer) has proven to be a delicate problem. We therefore present a detailed spectroscopic study in the 2.38 -- 12 micron wavelength range of a sample of 16 A0 -- M2 stars used for the calibration of ISO-SWS. By investigating the discrepancies between the ISO-SWS data of these sources, the theoretical predictions of their spectra, the high-resolution FTS-KP (Kitt Peak) spectrum of Alpha Boo and the solar FTS-ATMOS (Atmospheric Trace Molecule Spectroscopy) spectrum, both calibration problems and problems in computing the theoretical models and the synthetic spectra are revealed. The underlying reasons for these problems are sought for and the impact on the further calibration of ISO-SWS and on the theoretical modelling is discussed extensively.

L. Decin; B. Vandenbussche; C. Waelkens; K. Eriksson; B. Gustafsson; B. Plez; A. J. Sauval; K. Hinkle

2002-07-29T23:59:59.000Z

96

Climate Sciences: Atmospheric Thermodynamics  

E-Print Network [OSTI]

1 Climate Sciences: Atmospheric Thermodynamics Instructor: Lynn Russell, NH343 http://aerosol.ucsd.edu/courses.html Text: Curry & Webster Atmospheric Thermodynamics Ch1 Composition Ch2 Laws Ch3 Transfers Ch12 Energy Climate Sciences: Atmospheric Thermodynamics Instructor: Lynn Russell, NH343 http

Russell, Lynn

97

5, 60416076, 2005 Atmospheric  

E-Print Network [OSTI]

opportunity to examine atmospheric oxidation in a megacity that has more pollution than typical USACPD 5, 6041­6076, 2005 Atmospheric oxidation in the Mexico City Metropolitan Area T. R. Shirley et.atmos-chem-phys.org/acpd/5/6041/ SRef-ID: 1680-7375/acpd/2005-5-6041 European Geosciences Union Atmospheric Chemistry

Boyer, Edmond

98

Oxidation of trace amounts of transplutonium elements to the tetravalent state in solutions of mineral acids and their stabilities  

SciTech Connect (OSTI)

The behavior of trace amounts of americium(IV) in sulfuric and nitric acid solutions as a function of the mineral acid, potassium phosphotungstate, and ammonium persulfate concentrations was investigated. The stability of americium(IV) was studied. The optimal conditions and time of oxidation of trace amounts of americium to the tetravalent state were found on the basis of the experimental data obtained.

Milyukova, M.S.; Varezhkina, N.S.; Kuzovkina, E.V.; Malikov, D.A.; Myasoedov, B.F.

1989-01-01T23:59:59.000Z

99

atmosphere boundary layer: Topics by E-print Network  

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

Atmospheric Boundary Layer Wind Response to Mesoscale Sea Surface Temperature The wind speed response to mesoscale SST variability is investigated over the Agulhas Return Current...

100

atmospheric superficial layer: Topics by E-print Network  

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

Atmospheric Boundary Layer Wind Response to Mesoscale Sea Surface Temperature The wind speed response to mesoscale SST variability is investigated over the Agulhas Return Current...

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


101

atmospheric boundary layer: Topics by E-print Network  

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

Atmospheric Boundary Layer Wind Response to Mesoscale Sea Surface Temperature The wind speed response to mesoscale SST variability is investigated over the Agulhas Return Current...

102

atmospheric boundary layers: Topics by E-print Network  

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

Atmospheric Boundary Layer Wind Response to Mesoscale Sea Surface Temperature The wind speed response to mesoscale SST variability is investigated over the Agulhas Return Current...

103

Effects of atmospheres on bonding characteristics of silver and...  

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

temperature. To investigate the effects of atmospheres on the bonding characteristics of ceramic joints brazed with Ag-CuO braze filler metals, alumina joints prepared using a...

104

Project AIRSTREAM: Trace gas final report  

SciTech Connect (OSTI)

The results of 10 years of sampling for trace gases in the upper troposphere and lower stratosphere are presented. These samples were collected under the auspices of the Atomic Energy Commission (AEC), the Energy Research and Development Administration (ERDA) and the Department of Energy (DOE). Almost 1000 whole air samples were collected during the years 1973 to 1983 under Project AIRSTREAM. Project AIRSTREAM was part of the Environmental Measurements Laboratory's (EML, at that time called the Health and Safety Laboratory/HASL) research effort to investigate the impact of the injection of radionuclides and stable compounds into the stratosphere. One or more of the following compounds were analyzed: CCl[sub 3]F, CCl[sub 2]F[sub 2], CCl[sub 4], N[sub 2]O, SF[sub 6], CO[sub 2], CH[sub 4], CH[sub 3]CCl[sub 3], and COS. Details of the Project's quality assurance program are discussed. Also included in the report are two-dimensional plots of the concentration of CCl[sub 3]F and a complete tabulation of the data.

Leifer, R.

1992-12-01T23:59:59.000Z

105

Project AIRSTREAM: Trace gas final report  

SciTech Connect (OSTI)

The results of 10 years of sampling for trace gases in the upper troposphere and lower stratosphere are presented. These samples were collected under the auspices of the Atomic Energy Commission (AEC), the Energy Research and Development Administration (ERDA) and the Department of Energy (DOE). Almost 1000 whole air samples were collected during the years 1973 to 1983 under Project AIRSTREAM. Project AIRSTREAM was part of the Environmental Measurements Laboratory`s (EML, at that time called the Health and Safety Laboratory/HASL) research effort to investigate the impact of the injection of radionuclides and stable compounds into the stratosphere. One or more of the following compounds were analyzed: CCl{sub 3}F, CCl{sub 2}F{sub 2}, CCl{sub 4}, N{sub 2}O, SF{sub 6}, CO{sub 2}, CH{sub 4}, CH{sub 3}CCl{sub 3}, and COS. Details of the Project`s quality assurance program are discussed. Also included in the report are two-dimensional plots of the concentration of CCl{sub 3}F and a complete tabulation of the data.

Leifer, R.

1992-12-01T23:59:59.000Z

106

Methane present in an extrasolar planet atmosphere  

E-Print Network [OSTI]

Molecules present in exoplanetary atmospheres are expected to strongly influence the atmospheric radiation balance, trace dynamical and chemical processes, and indicate the presence of disequilibrium effects. Since molecules have the potential to reveal the exoplanet atmospheric conditions and chemistry, searching for them is a high priority. The rotational-vibrational transition bands of water, carbon monoxide, and methane are anticipated to be the primary sources of non-continuum opacity in hot-Jovian planets. Since these bands overlap in wavelength, and the corresponding signatures from them are weak, decisive identification requires precision infrared spectroscopy. Here we report on a near-infrared transmission spectrum of the planet HD 189733b showing the presence of methane. Additionally, a resolved water-vapour band at 1.9 microns confirms the recent claim of water in this object. On thermochemical grounds, carbon-monoxide is expected to be abundant in the upper atmosphere of hot-Jovian exoplanets; thus the detection of methane rather than carbon-monoxide in such a hot planet could signal the presence of a horizontal chemical gradient away from the permanent dayside, or it may imply an ill-understood photochemical mechanisms that leads to an enhancement of methane.

Mark R. Swain; Gautam Vasisht; Giovanna Tinetti

2008-02-07T23:59:59.000Z

107

Feasibility of the detection of trace elements in particulate...  

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

of trace elements in particulate matter using online High-Resolution Aerosol Mass Spectrometry. Feasibility of the detection of trace elements in particulate matter using online...

108

atom trap trace: Topics by E-print Network  

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

1 An atom trap trace analysis system for measuring krypton contamination in xenon dark matter detectors Physics Websites Summary: An atom trap trace analysis system for measuring...

109

Infrared near-field spectroscopy of trace explosives using an...  

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

spectroscopy of trace explosives using an external cavity quantum cascade laser. Infrared near-field spectroscopy of trace explosives using an external cavity quantum...

110

Ultrasensitive Voltammetric Detection of Trace Heavy Metal Ions...  

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

Voltammetric Detection of Trace Heavy Metal Ions Using Carbon Nanotube Nanoelectrode Array. Ultrasensitive Voltammetric Detection of Trace Heavy Metal Ions Using Carbon Nanotube...

111

Atmospheric Neutrino Fluxes  

E-Print Network [OSTI]

Starting with an historical review, I summarize the status of calculations of the flux of atmospheric neutrinos and how they compare to measurements.

Thomas K. Gaisser

2005-02-18T23:59:59.000Z

112

RESTRICTED-TRACE APPROXIMATION FOR NUCLEAR ANTIFERROMAGNETISM  

E-Print Network [OSTI]

1353 RESTRICTED-TRACE APPROXIMATION FOR NUCLEAR ANTIFERROMAGNETISM M. GOLDMAN and G. SARMA Service to predict several properties of nuclear antiferromagnetic structures : sublattice magnetization of nuclear dipolar magnetic ordering, either antiferromagnetic or ferromagnetic, has been reported

Boyer, Edmond

113

Extraction of trace metals from fly ash  

DOE Patents [OSTI]

A process for recovering silver, gallium and/or other trace metals from a fine grained industrial fly ash associated with a process for producing phosphorous, the fly ash having a silicate base and containing surface deposits of the trace metals as oxides, chlorides or the like, with the process being carried out by contacting the fly ash with AlCl.sub.3 in an alkali halide melt to react the trace metals with the AlCl.sub.3 to form compositions soluble in the melt and a residue containing the silicate and aluminum oxide or other aluminum precipitate, and separating the desired trace metal or metals from the melt by electrolysis or other separation techniques.

Blander, Milton (Palos Park, IL); Wai, Chien M. (Moscow, ID); Nagy, Zoltan (Woodridge, IL)

1984-01-01T23:59:59.000Z

114

Extraction of trace metals from fly ash  

DOE Patents [OSTI]

A process is described for recovering silver, gallium and/or other trace metals from a fine grained industrial fly ash associated with a process for producing phosphorous. The fly ash has a silicate base and contains surface deposits of the trace metals as oxides, chlorides or the like. The process is carried out by contacting the fly ash with AlCl/sub 3/ in an alkali halide melt to react the trace metals with the AlCl/sub 3/ to form compositions soluble in the melt and a residue containing the silicate and aluminum oxide or other aluminum precipitate, and separating the desired trace metal or metals from the melt by electrolysis or other separation techniques.

Blander, M.; Wai, C.M.; Nagy, Z.

1983-08-15T23:59:59.000Z

115

Trace element analysis of Texas lignite  

E-Print Network [OSTI]

or in the planning stages, Near surface lignite re- sources are estimated to be 21 billion metric tons in Texas, while deep basin reserves are estimated at 31 billion metric tons. Near (3] surface reserves alone could fulfill Texas' electrical needs for 100 years... for environmental and health concerns trace element characterization of lignites is important. A needed avenue of research is charact- erization of trace element pathways in lignite fired power plants. :hat is to say what percentage of a certain element...

Mahar, Sean

1982-01-01T23:59:59.000Z

116

Atmospheric Thermodynamics Composition  

E-Print Network [OSTI]

1 Atmospheric Thermodynamics Ch1 Composition Ch2 Laws Ch3 Transfers Ch12 EnergyBalance Ch4 Water Ch Sciences: Atmospheric Thermodynamics Instructor: Lynn Russell, NH343 http #12;2 Review from Ch. 1 · Thermodynamic quantities · Composition · Pressure · Density · Temperature

Russell, Lynn

117

Atmospheric Dynamics II Instructor  

E-Print Network [OSTI]

AT602 Atmospheric Dynamics II 2 credits Instructor: David W. J. Thompson davet: An Introduction to Dynamic Meteorology, 5th Edition, Academic Press (recommended) · Marshall, J., and Plumb, R. A., 2008: Atmosphere, Ocean, and Climate Dynamics: An Introductory Text, Academic Press. · Vallis, G. K

118

Atmospheric Pollution Research 1 (2010) 220228 Atmospheric Pollution Research  

E-Print Network [OSTI]

Atmospheric Pollution Research 1 (2010) 220228 Atmospheric Pollution Research www in modeling of the associated multiphase processes. Iron redox species are important pollutants. The oxidative capacity of the atmospheric cloud water decreases when dissolution is included

Boyer, Edmond

119

Lightning, atmospheric electricity and climate change  

SciTech Connect (OSTI)

Temperature records indicate that a global warming of 0.5{minus}0.7{degrees}C has occurred over the past century (Hansen and Lebedeff, 1987). Whether this trend is a result of increased trace gas concentrations in the atmosphere, or simply a result of natural variability; is still not known. These temperature trends are derived from thousands of observations worldwide. However, these observations are concentrated largely over continental areas, and then mainly in the northern hemisphere`s populated regions. This northern hemisphere continental bias results in large uncertainties in estimates of global temperature trends. Due to the increasing evidence that the present buildup of greenhouse gases in the atmosphere may result in an additional global warming of 1-5{degrees}C by the year 2050 (IPCC, 1990), it is increasingly important to find afternative methods to monitor fluctuations in global surface temperatures. As shown by two recent studies (Williams, 1992; Price, 1993), the global atmospheric electric circuit may provide a promising afternative for monitoring future climate change.

Price, C.

1993-10-01T23:59:59.000Z

120

Atmospheric optical calibration system  

DOE Patents [OSTI]

An atmospheric optical calibration system is provided to compare actual atmospheric optical conditions to standard atmospheric optical conditions on the basis of aerosol optical depth, relative air mass, and diffuse horizontal skylight to global horizontal photon flux ratio. An indicator can show the extent to which the actual conditions vary from standard conditions. Aerosol scattering and absorption properties, diffuse horizontal skylight to global horizontal photon flux ratio, and precipitable water vapor determined on a real-time basis for optical and pressure measurements are also used to generate a computer spectral model and for correcting actual performance response of a photovoltaic device to standard atmospheric optical condition response on a real-time basis as the device is being tested in actual outdoor conditions. 7 figs.

Hulstrom, R.L.; Cannon, T.W.

1988-10-25T23:59:59.000Z

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


121

Tracing Noble Gas Radionuclides in the Environment  

E-Print Network [OSTI]

Trace analysis of radionuclides is an essential and versatile tool in modern science and technology. Due to their ideal geophysical and geochemical properties, long-lived noble gas radionuclides, in particular, 39Ar (t1/2 = 269 yr), 81Kr (t1/2 = 2.3x10^5 yr) and 85Kr (t1/2 = 10.8 yr), have long been recognized to have a wide range of important applications in Earth sciences. In recent years, significant progress has been made in the development of practical analytical methods, and has led to applications of these isotopes in the hydrosphere (tracing the flow of groundwater and ocean water). In this article, we introduce the applications of these isotopes and review three leading analytical methods: Low-Level Counting (LLC), Accelerator Mass Spectrometry (AMS) and Atom Trap Trace Analysis (ATTA).

P. Collon; W. Kutschera; Z. -T. Lu

2004-02-11T23:59:59.000Z

122

Magnetized Atmospheres around Accreting Neutron Stars  

E-Print Network [OSTI]

We present a detailed investigation of atmospheres around accreting neutron stars with high magnetic field ($B\\gtrsim 10^{12}$ G) and low luminosity ($L\\lesssim 10^{33}$ erg/s). We compute the atmospheric structure, intensity and emergent spectrum for a plane-parallel, pure hydrogen medium by solving the transfer equations for the normal modes coupled to the hydrostatic and energy balance equations. The hard tail found in previous investigations for accreting, non-magnetic neutron stars with comparable luminosity is suppressed and the X-ray spectrum, although still harder than a blackbody at the star effective temperature, is nearly planckian in shape. Spectra from accreting atmospheres, both with high and low fields, are found to exhibit a significant excess at optical wavelengths above the Rayleigh-Jeans tail of the X-ray continuum.

S. Zane; R. Turolla; A. Treves

2000-02-01T23:59:59.000Z

123

Prediction of rainwater acidity using trace element concentrations  

SciTech Connect (OSTI)

It is of interest to be able to estimate the contribution of an anthropogenic emission source to downwind rainwater chemistry. The authors here consider the closure of a large copper smelter which operated in a region where background and other emission sources should contribute smaller amounts of atmospheric sulfur than the smelter. An additional simplification existed in that meteorology associated with rain was relatively well known and consistent. A field experiment was conducted in the winters of 1985 and 1986 to collect rainwater at sites upwind and downwind of the Tacoma, Washington smelter. The smelters SO{sub 2} emissions, their conversion to SO{sub 4}= via three oxidants (O{sub 3}, H{sub 2}O{sub 2}, and O{sub 2} - Fe catalyzed reactions), diffusion, transport, and aerosol/gas scavenging previously have been estimated while adjusting model parameters until the predictions fit the rainwater data. To take advantage of the unique experimental design afforded by the closure of the smelter, statistical analysis was performed on NO{sub 3}-, SO{sub 4}(xs)= (excess of seasalt), and pH data; analysis of variance (ANOVA) confirmed that the smelter had a significant (p < .01) influence on rainwater pH and SO{sub 4}(xs). The analysis presented here extends the ANOVA by applying a multivariate regression technique to new data for trace element concentrations for the same rain samples. To predict rainwater acidity, they derive fingerprints from trace element data, identify a source or process related to that fingerprint, and compare the predicted contributions for pre- and post- closure samples.

Vong, R.J.; Peterson, R.E. (Univ. of Washington, Seattle (USA))

1988-09-01T23:59:59.000Z

124

A compositional trace semantics for Orc Dimitrios Vardoulakis and Mitchell Wand  

E-Print Network [OSTI]

A compositional trace semantics for Orc Dimitrios Vardoulakis and Mitchell Wand Northeastern University dimvar@ccs.neu.edu wand@ccs.neu.edu Abstract. Orc [9] is a language for task orchestration. It has binding, and proving an adequacy theorem to relate them. Also, we investigate strong bisimulation in Orc

Strickland, Stevie

125

Background Concentrations of Trace Metals in  

E-Print Network [OSTI]

of Florida State University System of Florida FLORIDA CENTER FOR SOLID AND HAZARDOUS WASTE MANAGEMENT 2207 NW for evaluating land application of non-hazardous waste materials and monitoring the mobility of trace metals from 8,000 archived samples. l To validate the sampling protocol used by the Florida Cooperative Soil

Ma, Lena

126

Trace metals in sediments of coastal Siberia  

E-Print Network [OSTI]

For the work described in this thesis, a total of 218 samples from 104 cores from the East Siberian, Laptev, Kara, and Pechora Seas and the Ob and Yenisei Rivers were analyzed for the trace metals Ag, As, Ba, Cd, Cr, Cu, Fe, Hg, Ni, Pb, Sb, and Zn...

Esnough, Teresa Elizabeth

1996-01-01T23:59:59.000Z

127

1999 Gordon Research Conference on Atmospheric Chemistry  

SciTech Connect (OSTI)

The Gordon Research Conference (GRC) on Atmospheric Chemistry was held at Salve Regina University in Newport, Rhode Island, June 13-18, 1999. The conference was well attended with 151 participants. The attendees represented the spectrum of endeavor in this field coming from academia, industry, and government laboratories, both US and foreign scientists, senior researchers, young investigators, and students.

Storm, C.

2000-08-01T23:59:59.000Z

128

Harmonic propagation of variability in surface energy balance within a coupled soil-vegetation-atmosphere system  

E-Print Network [OSTI]

[1] The response of a soil-vegetation-atmosphere continuum model to incoming radiation forcing is investigated in order to gain insights into the coupling of soil and atmospheric boundary layer (ABL) states and fluxes. The ...

Gentine, P.

129

Effect of Atlantic Meridional Overturning Circulation Changes on Tropical Coupled Ocean-Atmosphere System  

E-Print Network [OSTI]

The objective of this study is to investigate the effect of Atlantic meridional overturning circulation (AMOC) changes on tropical coupled ocean-atmosphere system via oceanic and atmospheric processes. A suite of numerical simulations have been...

Wan, Xiuquan

2010-01-14T23:59:59.000Z

130

Tracing Paleoclimate over the Past 25,000 Years Using Evidence from Radiogenic Isotopes  

E-Print Network [OSTI]

The objective of this dissertation is to apply radiogenic isotopes extracted from marine sediments to investigate aspects of global climate change over the past 25 kyr, especially ocean and atmospheric circulation, continental aridity, and hydrology...

Xie, Ruifang

2013-04-30T23:59:59.000Z

131

12.479 Trace-Element Geochemistry, Spring 2009  

E-Print Network [OSTI]

The emphasis of this course is to use Trace Element Geochemistry to understand the origin and evolution of igneous rocks. The approach is to discuss the parameters that control partitioning of trace elements between phases ...

Frey, Frederick

132

12.479 Trace-Element Geochemistry, Fall 2006  

E-Print Network [OSTI]

Focuses on element distribution in rocks and minerals using data obtained from natural and experimental systems. Emphasizes models describing trace-element partitioning and applications of trace-element geochemistry to ...

Frey, Frederick August

133

T-720: Blue Coat Director HTTP Trace Processing Flaw Permits...  

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

0: Blue Coat Director HTTP Trace Processing Flaw Permits Cross-Site Scripting Attacks T-720: Blue Coat Director HTTP Trace Processing Flaw Permits Cross-Site Scripting Attacks...

134

A graphics architecture for ray tracing and photon mapping  

E-Print Network [OSTI]

and spatial locality, as well as eliminating unnecessary random memory accesses. A high level abstraction of the combined ray tracing and photon mapping streaming pipeline is introduced. Based on this abstraction, an e?cient ray tracing and photon...

Ling, Junyi

2005-11-01T23:59:59.000Z

135

Steam Tracing...New Technologies for the 21st Century  

E-Print Network [OSTI]

For decades, steam tracing has been an accepted practice in the heating of piping, vessels, and equipment. This paper presents recent product innovations such as "burn-safe" and "energy efficient" steam tracing products. For the many applications...

Pitzer, R. K.; Barth, R. E.; Bonorden, C.

136

Active Moss Biomonitoring of Atmospheric Trace Element Deposition in Belgrade Urban Area using ENAA and AAS  

SciTech Connect (OSTI)

Active biomonitoring of air quality in Belgrade, Serbia, was performed using the moss Sphagnum girgensohnii. Moss bags were exposed in parallel with and without irrigation respectively for four consecutive 3-month periods at three urban sites. Twenty-nine elements were determined in the exposed moss samples by ENAA and three (Cu, Cd, and Pb) by AAS. The relative accumulation factor (RAF) was greater than 1 for the majority of elements. Elements such as Cl, K, Rb and Cs, however, leached from the moss tissue during the exposure time. For all exposure periods, higher uptake in the irrigated moss bags was evident for Al, Cr, Fe, Cu, Zn, Sr, Pb, and Cd.

Anicic, M.; Tasic, M.; Tomasevic, M.; Rajsic, S. [Institute of Physics, Pregrevica 118, 11080 Belgrade (Serbia and Montenegro); Frontasyeva, M. V.; Strelkova, L. P. [Joint Institute for Nuclear Research, Joliot Curie 6, 141980 Dubna (Russian Federation); Steinnes, E. [Department of Chemistry, Norwegian University of Science and Technology, NO-7491 Trondheim (Norway)

2007-11-26T23:59:59.000Z

137

Sources and fluxes of atmospheric trace elements to the Gulf of Aqaba, Ying Chen,1  

E-Print Network [OSTI]

of these elements [Bruland, 1983; Patterson and Settle, 1987]. Several elements that show surface depletion also-like uptake in the upper ocean thus the surface enrichment is not marked [e.g., Fe and Cd, Bruland, 1983 al., 1990] and Zn [Bruland, 1989] are also considered elements that may limit primary productivity

Paytan, Adina

138

TRACE/PARCS calculations of exercises 1 and 2 of the V1000CT-2 benchmark  

SciTech Connect (OSTI)

Exercises 1 and 2 of the VVER-1000 Coolant Transient Benchmark Phase 2 (V1000CT-2) are investigated using coupled three-dimensional (3-D) neutron kinetics/thermal-hydraulics code TRACE/PARCS. Two coarse mesh 3-D thermal-hydraulic models (with six angular sectors and with eighteen angular sectors) were developed for the system code TRACE for Exercise 1 and their applicability is evaluated using the test data provided in the benchmark specification. The six sector model is then coupled with the PARCS 3-D neutron kinetics model in order to analyze Exercise 2 of the benchmark. The results show that TRACE code is accurate enough to simulate the flow mixing occurring in the downcomer of the VVER-1000 reactor. (authors)

Ivanov, B.; Ivanov, K. [Pennsylvania State Univ., 230 Reber Bldg, Univ. Park, PA 16801 (United States); Popov, E. [Oak Ridge National Laboratory, 1 Bethel Valley Rd., Oak Ridge, TN 37831 (United States)

2006-07-01T23:59:59.000Z

139

Ambient methods and apparatus for rapid laser trace constituent analysis  

DOE Patents [OSTI]

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.

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

140

Dynamics of Atmospheres  

E-Print Network [OSTI]

transfer ­ Solar heating of surface, and atmosphere via dust absorption ­ Infrared CO2 band cooling (especially around 667 cm-1) ­ nonLTE near-infrared heating of CO2 and nonLTE cooling effects above ~60-80 km. Baroclinic waves, scales, heat and momentum transport, seasonal occurrence. Qualitative treatment

Read, Peter L.

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


141

Dynamics of Planetary Atmospheres  

E-Print Network [OSTI]

pressure (bars) N2 82%; Ar 12%; CH4 6%CO2 96.5%; N2 3.5%Atmospheric composition 26177Orbital inclination (1992) orbiter ­ Winds from cloud-tracking and probe drifts ­ IR temperatures, solar-fixed tides, polar-Huygens mission (from 2005) ­ Doppler wind descent profile ­ IR temperature and composition maps ­ Visible, IR

Read, Peter L.

142

Effect of Microbial Activity on Trace Element Release from Sewage  

E-Print Network [OSTI]

Effect of Microbial Activity on Trace Element Release from Sewage Sludge S H A B N A M Q U R E S H in mobilization of trace elements from land-applied wastewater sludge is not well-defined. Our study examined-effective management alternative. Unfor- tunately, sewage sludge also contains potentially toxic trace elements

Walter, M.Todd

143

Investigation of the Atmospheric Ozone Impacts of Methyl Iodide  

E-Print Network [OSTI]

0692; South Coast Air Quality Management District Contractand South Coast Air Quality Management District, Contractthe South Coast Air Quality Management District Contract No.

Carter, W P L

2007-01-01T23:59:59.000Z

144

Investigation of the Atmospheric Ozone Impacts of Methyl Iodide  

E-Print Network [OSTI]

J. R. Holmes (1977): “Nitrogen Dioxide Photolysis in the LosO3 Ozone NO Nitric Oxide NO2 Nitrogen Dioxide NO3 NitrateNitrogen Pentoxide HONO Nitrous Acid HNO3 Nitric Acid HNO4 Peroxynitric Acid HO2H Hydrogen Peroxide CO Carbon Monoxide SO2 Sulfur Dioxide

Carter, W P L

2007-01-01T23:59:59.000Z

145

The investigation of atmospheric humidity control by hot gas reheat  

E-Print Network [OSTI]

Number 1, 2, and 3 24 10 Psychrometric Chart with the Processes of Runs Number 1, 2, and 3 Superimposed Upon One Another 25 Nossle Performance Curvos 31 vi LIST OF SM30LS ~Sbol OF ~tit Cubic feet per minute Constant pressure specific heat... tempera- ture L2/T2 in. Hg in, H2O MV PD psig sp gr tdb Inches of mercury Inches of water Pounds mass Pounds mass dry air Pounds mass water vapor Millivolt s Pressure diff'erential (in. Hg) Gage pressure Heat added or re...

Whitlock, Paul Leroy

1963-01-01T23:59:59.000Z

146

Atmospheric Radiation Measurement (ARM) Data Products from Principal Investigators  

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

The Office of Biological and Environmental Research in DOE's Office of Science is responsible for the ARM Program. The ARM Archive physically resides at the Oak Ridge National Laboratory.

147

Investigation of the Atmospheric Ozone Impacts of Methyl Iodide  

E-Print Network [OSTI]

Glyphosate, isopropylamine salt Acrolein Glycerine Propylenefrom methacrolein and other acroleins. Steady State Radical

Carter, W P L

2007-01-01T23:59:59.000Z

148

Investigation of the Atmospheric Ozone Impacts of Methyl Iodide  

E-Print Network [OSTI]

FL Kansas City, MO Lake Charles, LA Los Angeles, CAFL Kansas City, MO Lake Charles, LA Los Angeles, CA

Carter, W P L

2007-01-01T23:59:59.000Z

149

Investigating jets in the lower-to-mid solar atmosphere  

E-Print Network [OSTI]

´ay-Siebenb¨urgen Solar Physics and Space Plasma Research Centre Department of Applied Mathematics The University

150

Removal of trace olefins from aromatic hydrocarbons  

SciTech Connect (OSTI)

A process is described for treating a hydrocarbon process stream by converting trace quantities of olefinic impurities to nonolefinic hydrocarbons. The process comprises contacting the process stream, which contains trace olefins in an amount of from about 50 to about 2000 as measured by Bromine Index and at least 80% by weight of aromatic and naphthenic hydrocarbons having from 6 to 20 carbon atoms per molecule, at reaction conditions which ensure liquid phase operation with a solid catalyst composite comprising a crystalline aluminosilicate zeolite and a refractory inorganic oxide. A catalytic olefin-consuming alkylation reaction then produces an essentially olefinfree product stream with approximately the same quantity and distribution of aromatic and naphthenic hydrocarbons as contained in the process stream.

Sachtler, J.W.A.; Barger, P.T.

1989-01-03T23:59:59.000Z

151

Digital imaging tracing technology for print media  

E-Print Network [OSTI]

decade. Everyday, major newspapers and magazines digitally alter photographs running in their publications. Michael Morse of the National Press Photographers Association noted that, "When you' re looking at the Redbook or Mademoiselle or Sports.... . TIME and Newsweek Covers. . Page 10 12 13 14 20 22 23 Photo Enhancement . 24 10 Public Key Encryption 38 11 Digital Signature 39 12 Secure Digital Camera 40 13 Verification Software . . 41 14 Tracing Technology. . 43 INTRODUCTION Since...

Milne, Stewart William

2012-06-07T23:59:59.000Z

152

Trace Assignment Adam Leroy, AY 203  

E-Print Network [OSTI]

Trace Assignment Adam Leroy, AY 203 VLT Optics I tracked down optical components for the VLT on the web and came up with the following speci­ fication: Quantity Value r p 28800 mm k p \\Gamma1:004616 r s \\Gamma4553:57 mm k s \\Gamma1:66926 The primary has an effective inner radius of 1000 mm and and outer

Backer, Don

153

HELSINKI UNIVERSITY OF TECHNOLOGY ENE-47.153 Trace elements and alkaliTrace elements and alkali  

E-Print Network [OSTI]

elements in fossil - and waste-derived fuelsTrace elements in fossil - and waste-derived fuels Coal Peat Heavy fuel oil Pet coke MSW RDF Wood Waste wood Waste paper Scrap tyres Sew. sludge Hg 0.02-3 ~0.07 .153 Behaviour of trace elements in coalBehaviour of trace elements in coal combustion flue gasescombustion flue

Zevenhoven, Ron

154

Differential atmospheric tritium sampler  

DOE Patents [OSTI]

An atmospheric tritium sampler is provided which uses a carrier gas comprised of hydrogen gas and a diluting gas, mixed in a nonexplosive concentration. Sample air and carrier gas are drawn into and mixed in a manifold. A regulator meters the carrier gas flow to the manifold. The air sample/carrier gas mixture is pulled through a first moisture trap which adsorbs water from the air sample. The moisture then passes through a combustion chamber where hydrogen gas in the form of H/sub 2/ or HT is combusted into water. The manufactured water is transported by the air stream to a second moisture trap where it is adsorbed. The air is then discharged back into the atmosphere by means of a pump.

Griesbach, O.A.; Stencel, J.R.

1987-10-02T23:59:59.000Z

155

Differential atmospheric tritium sampler  

DOE Patents [OSTI]

An atmospheric tritium sampler is provided which uses a carrier gas comprised of hydrogen gas and a diluting gas, mixed in a nonexplosive concentration. Sample air and carrier gas are drawn into and mixed in a manifold. A regulator meters the carrier gas flow to the manifold. The air sample/carrier gas mixture is pulled through a first moisture trap which adsorbs water from the air sample. The mixture then passes through a combustion chamber where hydrogen gas in the form of H.sub.2 or HT is combusted into water. The manufactured water is transported by the air stream to a second moisture trap where it is adsorbed. The air is then discharged back into the atmosphere by means of a pump.

Griesbach, Otto A. (Langhorne, PA); Stencel, Joseph R. (Skillman, NJ)

1990-01-01T23:59:59.000Z

156

The changing atmosphere  

SciTech Connect (OSTI)

The chemistry of the atmosphere is changing, in large measure because of gases emitted by such human activities as farming, manufacturing, and the combustion of fossil fuels. The deleterious effects are increasingly evident; they may well become worse in the years ahead. This paper discusses the pollutants and the environmental perturbations with which they are associated. The authors believe the solution to the earth's environmental problems lies in a truly global effort.

Graedel, T.E.; Crutzen, P.J.

1989-09-01T23:59:59.000Z

157

Environmental Chemistry II (Atmospheric Chemistry)  

E-Print Network [OSTI]

Seinfeld, J. H. and Pandis, S. N. Atmospheric Chemistry and Physics: From Air Pollution to Climate ChangeSYLLABUS FOR Environmental Chemistry II (Atmospheric Chemistry) FCH 511 Fall 2013 Theodore S

Dibble, Theodore

158

Pluto's Atmosphere Does Not Collapse  

E-Print Network [OSTI]

Combining stellar occultation observations probing Pluto's atmosphere from 1988 to 2013 and models of energy balance between Pluto's surface and atmosphere, we conclude that Pluto's atmosphere does not collapse at any point in its 248-year orbit. The occultation results show an increasing atmospheric pressure with time in the current epoch, a trend present only in models with a high thermal inertia and a permanent N2 ice cap at Pluto's north rotational pole.

Olkin, C B; Borncamp, D; Pickles, A; Sicardy, B; Assafin, M; Bianco, F B; Buie, M W; de Oliveira, A Dias; Gillon, M; French, R G; Gomes, A Ramos; Jehin, E; Morales, N; Opitom, C; Ortiz, J L; Maury, A; Norbury, M; Ribas, F B; Smith, R; Wasserman, L H; Young, E F; Zacharias, M; Zacharias, N

2013-01-01T23:59:59.000Z

159

Accident Investigations  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

This Order prescribes organizational responsibilities, authorities, and requirements for conducting investigations of certain accidents occurring at DOE sites, facilities, areas, operations, and activities.

2011-03-04T23:59:59.000Z

160

Atom trap trace analysis of krypton isotopes  

SciTech Connect (OSTI)

A new method of ultrasensitive isotope trace analysis has been developed. This method, based on the technique of laser manipulation of neutral atoms, has been used to count individual {sup 85}Kr and {sup 81}Kr atoms present in a natural krypton gas sample with isotopic abundances in the range of 10{sup {minus}11} and 10{sup {minus}13}, respectively. This method is free of contamination from other isotopes and elements and can be applied to several different isotope tracers for a wide range of applications. The demonstrated detection efficiency is 1 x 10{sup {minus}7}. System improvements could increase the efficiency by many orders of magnitude.

Bailey, K.; Chen, C. Y.; Du, X.; Li, Y. M.; Lu, Z.-T.; O'Connor, T. P.; Young, L.

1999-11-17T23:59:59.000Z

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


161

E-Print Network 3.0 - atmospheric state profiles Sample Search...  

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

Sciences and Ecology 2 INVESTIGATING THERMODYNAMICS OF VERTICAL ATMOSPHERIC ENERGY TRANSPORT Summary: the Earth's radiation entropy fluxes. The vertical profiles of net...

162

E-Print Network 3.0 - atmospheres final project Sample Search...  

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

Collection: Geosciences ; Environmental Sciences and Ecology 10 A new one-dimensional radiative equilibrium model for investigating atmospheric Summary: ) into equation (2.26)...

163

Atmospheric Aerosol Systems | EMSL  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation InInformationCenterResearch HighlightsTools PrintableCARIBU ProposalBeamAtmospheric

164

Atmospheric Radiation Measurement Program  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth (AOD)ProductssondeadjustsondeadjustAbout theOFFICEAmesApplication2ArgonneAssemblyDemandPlasma4August 1999 ARM

165

Atmospheric Radiation Measurement Program  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth (AOD)ProductssondeadjustsondeadjustAbout theOFFICEAmesApplication2ArgonneAssemblyDemandPlasma4August 1999

166

Atmospheric Radiation Measurement Program  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth (AOD)ProductssondeadjustsondeadjustAbout theOFFICEAmesApplication2ArgonneAssemblyDemandPlasma4August 1999July

167

Atmospheric Radiation Measurement Program  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth (AOD)ProductssondeadjustsondeadjustAbout theOFFICEAmesApplication2ArgonneAssemblyDemandPlasma4August

168

Atmospheric Radiation Measurement Program  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth (AOD)ProductssondeadjustsondeadjustAbout theOFFICEAmesApplication2ArgonneAssemblyDemandPlasma4August3 ARM 2003

169

Atmospheric Particulates | EMSL  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series to someone byDear Friend,Arthur J. Nozik -GrownAn overheadAtmospheric

170

Simulated Arctic atmospheric feedbacks associated with late summer sea ice anomalies  

E-Print Network [OSTI]

Simulated Arctic atmospheric feedbacks associated with late summer sea ice anomalies A. Rinke,1,2 K depend on regional and decadal variations in the coupled atmosphere-ocean-sea ice system. Citation: Rinke to investigate feedbacks between September sea ice anomalies in the Arctic and atmospheric conditions in autumn

Moore, John

171

Atmospheric Environment 34 (2000) 2851}2863 Resolution of pollutant concentrations in the boundary layer  

E-Print Network [OSTI]

Atmospheric Environment 34 (2000) 2851}2863 Resolution of pollutant concentrations in the boundary 1999 Abstract This paper investigates the solution of a 3D atmospheric dispersion problem using a time to solve the atmospheric di!usion equation. Preliminary studies of dispersion from a single source

Utah, University of

172

ON THE STABILITY OF SUPER-EARTH ATMOSPHERES  

SciTech Connect (OSTI)

We investigate the stability of super-Earth atmospheres around M stars using a seven-parameter, analytical framework. We construct stability diagrams in the parameter space of exoplanetary radius versus semimajor axis and elucidate the regions in which the atmospheres are stable against the condensation of their major constituents, out of the gas phase, on their permanent nightside hemispheres. We find that super-Earth atmospheres that are nitrogen-dominated (Earth-like) occupy a smaller region of allowed parameter space, compared to hydrogen-dominated atmospheres, because of the dual effects of diminished advection and enhanced radiative cooling. Furthermore, some super-Earths which reside within the habitable zones of M stars may not possess stable atmospheres, depending on the mean molecular weight and infrared photospheric pressure of their atmospheres. We apply our stability diagrams to GJ 436b and GJ 1214b, and demonstrate that atmospheric compositions with high mean molecular weights are disfavored if these exoplanets possess solid surfaces and shallow atmospheres. Finally, we construct stability diagrams tailored to the Kepler data set, for G and K stars, and predict that about half of the exoplanet candidates are expected to harbor stable atmospheres if Earth-like conditions are assumed. We include 55 Cancri e and CoRoT-7b in our stability diagram for G stars.

Heng, Kevin [ETH Zuerich, Institute for Astronomy, Wolfgang-Pauli-Strasse 27, CH-8093, Zuerich (Switzerland); Kopparla, Pushkar [ETH Zuerich, Institute for Atmospheric and Climate Science, Universitaetstrasse 16, CH-8092, Zuerich (Switzerland)

2012-07-20T23:59:59.000Z

173

Sensitive Multi-Species Emissions Monitoring: Infrared Laser-Based Detection of Trace-Level Contaminants.  

SciTech Connect (OSTI)

This report summarizes our development of spectroscopic chemical analysis techniques and spectral modeling for trace-gas measurements of highly-regulated low-concentration species present in flue gas emissions from utility coal boilers such as HCl under conditions of high humidity. Detailed spectral modeling of the spectroscopy of HCl and other important combustion and atmospheric species such as H 2 O, CO 2 , N 2 O, NO 2 , SO 2 , and CH 4 demonstrates that IR-laser spectroscopy is a sensitive multi-component analysis strategy. Experimental measurements from techniques based on IR laser spectroscopy are presented that demonstrate sub-ppm sensitivity levels to these species. Photoacoustic infrared spectroscopy is used to detect and quantify HCl at ppm levels with extremely high signal-to-noise even under conditions of high relative humidity. Additionally, cavity ring-down IR spectroscopy is used to achieve an extremely high sensitivity to combustion trace gases in this spectral region; ppm level CH 4 is one demonstrated example. The importance of spectral resolution in the sensitivity of a trace-gas measurement is examined by spectral modeling in the mid- and near-IR, and efforts to improve measurement resolution through novel instrument development are described. While previous project reports focused on benefits and complexities of the dual-etalon cavity ring-down infrared spectrometer, here details on steps taken to implement this unique and potentially revolutionary instrument are described. This report also illustrates and critiques the general strategy of IR- laser photodetection of trace gases leading to the conclusion that mid-IR laser spectroscopy techniques provide a promising basis for further instrument development and implementation that will enable cost-effective sensitive detection of multiple key contaminant species simultaneously.

Steill, Jeffrey D

2015-01-01T23:59:59.000Z

174

Trace metal capture by various sorbents during fluidized bed coal combustion  

SciTech Connect (OSTI)

Toxic trace metallic elements such as arsenic, beryllium, cadmium, chromium, cobalt, lead, manganese, mercury, nickel, and selenium are usually contained in coal in various forms and trace amounts. These metals will either stay in the ash or be vaporized during high temperature combustion. Portions of the vaporized metals may eventually be emitted from a combustion system in the form of metal fumes or particulates with diameters less than 1 micron, which are potentially hazardous to the environment. Current practice of controlling trace metal emissions during coal combustion employs conventional air pollution control devices (APCDs), such as electrostatic precipitators and baghouses, to collect fly ash and metal fumes. The control may not always be effective on metal fumes due to their extremely fine sizes. This study is to explore the opportunities for improved control of toxic trace metal emissions from coal-fired combustion systems. Specifically, the technology proposed is to employ suitable sorbents to reduce the amount of metal volatilization and capture volatilized metal vapors during fluidized bed coal combustion. The objective of the study was to investigate experimentally and theoretically the metal capture process.

Ho, T.C.; Ghebremeskel, A.N.; Hopper, J.R. [Lamar Univ., Beaumont, TX (United States)

1996-12-31T23:59:59.000Z

175

Trace Element Geochemical Zoning in the Roosevelt Hot Springs...  

Open Energy Info (EERE)

in the development of distinctive trace element signatures. Geochemical analysis of soil sample, shallow temperature gradient drill hole cuttings and deep drill hole cutting...

176

Trace-Element Distribution In An Active Hydrothermal System,...  

Open Energy Info (EERE)

trace-element dispersion patterns. Multielement analyses of surface rock samples, soil samples and drill cuttings from deep exploration wells provide a three-dimensional...

177

The Effects of Trace Contaminants on Catalytic Processing of...  

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

Processing of Biomass-Derived Feedstocks . Abstract: Trace components in biomass feedstocks are potential catalyst poisons when catalytically processing these materials to...

178

Towards a Ubiquitous Semantics of Interaction: phenomenology, scenarios and traces  

E-Print Network [OSTI]

Towards a Ubiquitous Semantics of Interaction: phenomenology, scenarios and traces Alan Dix does not attempt to address the whole question, but focuses on a phenomenological semantics

Dix, Alan

179

Atmospheric dispersion in mountain valleys and basins  

SciTech Connect (OSTI)

The primary goal of the research is to further characterize and understand dispersion in valley and basin atmospheres. A secondary, and related goal, is to identify and understand the dominant physical processes governing this dispersion. This has been accomplished through a review of the current literature, and analyses of recently collected data from two field experiments. This work should contribute to an improved understanding of material transport in the atmospheric boundary layer. It was found that dispersion in a freely draining valley (Brush Creek valley, CO) atmosphere is much greater than in an enclosed basin (Roanoke, VA) atmosphere primarily because of the greater wind speeds moving past the release point and the greater turbulence levels. The development of a cold air pool in the Roanoke basin is the dominant process governing nighttime dispersion in the basin, while the nighttime dispersion in the Brush Creek valley is dominated by turbulent diffusion and plume confinement between the valley sidewalls. The interaction between valley flows and above ridgetops flows is investigated. A ventilation rate'' of material transport between the valley and above ridgetop flows is determined. This is important in regional air pollution modeling and global climate modeling. A simple model of dispersion in valleys, applicable through a diurnal cycle, is proposed.

Allwine, K.J.

1992-01-01T23:59:59.000Z

180

Atmospheric dispersion in mountain valleys and basins  

SciTech Connect (OSTI)

The primary goal of the research is to further characterize and understand dispersion in valley and basin atmospheres. A secondary, and related goal, is to identify and understand the dominant physical processes governing this dispersion. This has been accomplished through a review of the current literature, and analyses of recently collected data from two field experiments. This work should contribute to an improved understanding of material transport in the atmospheric boundary layer. It was found that dispersion in a freely draining valley (Brush Creek valley, CO) atmosphere is much greater than in an enclosed basin (Roanoke, VA) atmosphere primarily because of the greater wind speeds moving past the release point and the greater turbulence levels. The development of a cold air pool in the Roanoke basin is the dominant process governing nighttime dispersion in the basin, while the nighttime dispersion in the Brush Creek valley is dominated by turbulent diffusion and plume confinement between the valley sidewalls. The interaction between valley flows and above ridgetops flows is investigated. A ``ventilation rate`` of material transport between the valley and above ridgetop flows is determined. This is important in regional air pollution modeling and global climate modeling. A simple model of dispersion in valleys, applicable through a diurnal cycle, is proposed.

Allwine, K.J.

1992-01-01T23:59:59.000Z

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


181

Falsification Of The Atmospheric CO2 Greenhouse Effects Within The Frame Of Physics  

E-Print Network [OSTI]

The atmospheric greenhouse effect, an idea that authors trace back to the traditional works of Fourier 1824, Tyndall 1861 and Arrhenius 1896 and is still supported in global climatology essentially describes a fictitious mechanism in which a planetary atmosphere acts as a heat pump driven by an environment that is radiatively interacting with but radiatively equilibrated to the atmospheric system. According to the second law of thermodynamics such a planetary machine can never exist. Nevertheless, in almost all texts of global climatology and in a widespread secondary literature it is taken for granted that such mechanism is real and stands on a firm scientific foundation. In this paper the popular conjecture is analyzed and the underlying physical principles are clarified. By showing that (a) there are no common physical laws between the warming phenomenon in glass houses and the fictitious atmospheric greenhouse effects, (b) there are no calculations to determine an average surface temperature of a planet, ...

Gerlich, Gerhard

2007-01-01T23:59:59.000Z

182

Can the trace formula describe weak localisation?  

E-Print Network [OSTI]

We attempt to systematically derive perturbative quantum corrections to the Berry diagonal approximation of the two-level correlation function (TLCF) for chaotic systems. To this end, we develop a ``weak diagonal approximation'' based on a recent description of the first weak localisation correction to conductance in terms of the Gutzwiller trace formula. This semiclassical method is tested by using it to derive the weak localisation corrections to the TLCF for a semiclassically disordered system. Unfortunately the method is unable to correctly reproduce the ``Hikami boxes'' (the relatively small regions where classical paths are glued together by quantum processes). This results in the method failing to reproduce the well known weak localisation expansion. It so happens that for the first order correction it merely produces the wrong prefactor. However for the second order correction, it is unable to reproduce certain contributions, and leads to a result which is of a different form to the standard one.

Robert S. Whitney; Igor V. Lerner; Robert A. Smith

1999-02-24T23:59:59.000Z

183

Accident Investigations  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

To prescribe requirements for conducting investigations of certain accidents occurring at Department of Energy (DOE) operations and sites; to improve the environment, safety and health for DOE, contractors, and the public; and to prevent the recurrence of such accidents. Chg 2, 4-26-96

1996-04-26T23:59:59.000Z

184

Accident Investigations  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

To prescribe requirements for conducting investigations of certain accidents occurring at Department of Energy (DOE) operations and sites; to improve the environment , safety and health for DOE, contractors, and the public; and to prevent the recurrence of such accidents. Chg 1, 10-26-95. Cancels parts of DOE 5484.1

1995-10-26T23:59:59.000Z

185

ATMOSPHERIC ELSEVIER AtmosphericResearch 44 (1997) 231-241  

E-Print Network [OSTI]

ATMOSPHERIC RESEARCH ELSEVIER AtmosphericResearch 44 (1997) 231-241 Error analysis of backscatter;accepted 14 February 1997 Abstract Ice sphere backscatter has been calculated using both Mie theory as a reasonable approximation for rv 1997 Elsevier Science B.V. 1. Introduction Cirrus clouds play

Reading, University of

186

ELSEVIER AtmosphericResearch 38 (1995) 207-235 ATMOSPHERIC  

E-Print Network [OSTI]

ELSEVIER AtmosphericResearch 38 (1995) 207-235 ATMOSPHERIC RESEARCH On the parameterization of ice and water substance mixing ratio fields were only strongly altered by turning off the ice phase of these schemes includes ice processes. But in mid- latitudes and also in tropics the ice phase is an important

Moelders, Nicole

187

Vapor scavenging by atmospheric aerosol particles  

SciTech Connect (OSTI)

Particle growth due to vapor scavenging was studied using both experimental and computational techniques. Vapor scavenging by particles is an important physical process in the atmosphere because it can result in changes to particle properties (e.g., size, shape, composition, and activity) and, thus, influence atmospheric phenomena in which particles play a role, such as cloud formation and long range transport. The influence of organic vapor on the evolution of a particle mass size distribution was investigated using a modified version of MAEROS (a multicomponent aerosol dynamics code). The modeling study attempted to identify the sources of organic aerosol observed by Novakov and Penner (1993) in a field study in Puerto Rico. Experimentally, vapor scavenging and particle growth were investigated using two techniques. The influence of the presence of organic vapor on the particle`s hydroscopicity was investigated using an electrodynamic balance. The charge on a particle was investigated theoretically and experimentally. A prototype apparatus--the refractive index thermal diffusion chamber (RITDC)--was developed to study multiple particles in the same environment at the same time.

Andrews, E.

1996-05-01T23:59:59.000Z

188

Fixed Space of Positive Trace-Preserving Super-Operators  

E-Print Network [OSTI]

We examine the fixed space of positive trace-preserving super-operators. We describe a specific structure that this space must have and what the projection onto it must look like. We show how these results, in turn, lead to an alternative proof of the complete characterization of the fixed space of completely positive trace-preserving super-operators.

Ansis Rosmanis

2011-09-15T23:59:59.000Z

189

Accuracy of Memory Reference Traces of Parallel Computations  

E-Print Network [OSTI]

, the trace-driven simulator uses the intrinsic traces and the sequence of loads and stores before the current cy- cle, to determine the next address. The mapping between load and store sequences and next addresses to issue, sometimes, requires partial program reexecution. Programs that do not require partial

Holliday, Mark A.

190

Initial conditions for paraxial ray tracing in inhomogeneous anisotropic media  

E-Print Network [OSTI]

, theoretical seismology, seismic anisotropy, wave propagation 1 Introduction By standard kinematic ray tracing and in numerical modelling and interpretation of high-frequency seismic wave #12;elds propagating in inhomogeneous to such important quantities as geometrical spreading and ray amplitudes. The limitations of kinematic ray tracing

Cerveny, Vlastislav

191

Evaluating regional emission estimates using the TRACE-P observations  

E-Print Network [OSTI]

Evaluating regional emission estimates using the TRACE-P observations G. R. Carmichael,1 Y. Tang,1. Wang,6 D. R. Blake,7 E. Atlas,8 A. Fried,8 B. Potter,9 M. A. Avery,10 G. W. Sachse,10 S. T. Sandholm,11 the NASA Transport and Chemical Evolution over the Pacific (TRACE-P) experiment are used in conjunction

Clarke, Antony

192

A Feasibility Study: Mining Daily Traces for Home Heating Control  

E-Print Network [OSTI]

A Feasibility Study: Mining Daily Traces for Home Heating Control Dezhi Hong and Kamin Whitehouse savings as well as 14.9%­59.2% reduction in miss time. Keywords Energy, home heating, daily traces, prediction 1. INTRODUCTION Heating, ventilation and cooling (HVAC) contributes most to a home's energy bills

Whitehouse, Kamin

193

Looking For Traces of Pharmaceuticals in Drinking Water  

E-Print Network [OSTI]

Looking For Traces of Pharmaceuticals in Drinking Water By Daniel D. Snow, Ph.D. Director traces of drugs in the public drinking water supplies of 24 major U.S. metropolitan areas. This has in drinking water supplies is not new, but the classes of contaminants being tested for are. Pharmaceuticals

Nebraska-Lincoln, University of

194

TCgen 2.0: A Tool to Automatically Generate Lossless Trace Compressors Martin Burtscher  

E-Print Network [OSTI]

TCgen 2.0: A Tool to Automatically Generate Lossless Trace Compressors Martin Burtscher Computer of TCgen, a tool for generating portable lossless trace compressors based on user-provided trace format, making it ideal for trace-based research and teaching environments as well as for trace archives. Version

Burtscher, Martin

195

Polyport atmospheric gas sampler  

DOE Patents [OSTI]

An atmospheric gas sampler with a multi-port valve which allows for multi, sequential sampling of air through a plurality of gas sampling tubes mounted in corresponding gas inlet ports. The gas sampler comprises a flow-through housing which defines a sampling chamber and includes a gas outlet port to accommodate a flow of gases through the housing. An apertured sample support plate defining the inlet ports extends across and encloses the sampling chamber and supports gas sampling tubes which depend into the sampling chamber and are secured across each of the inlet ports of the sample support plate in a flow-through relation to the flow of gases through the housing during sampling operations. A normally closed stopper means mounted on the sample support plate and operatively associated with each of the inlet ports blocks the flow of gases through the respective gas sampling tubes. A camming mechanism mounted on the sample support plate is adapted to rotate under and selectively lift open the stopper spring to accommodate a predetermined flow of gas through the respective gas sampling tubes when air is drawn from the housing through the outlet port.

Guggenheim, S. Frederic (Teaneck, NJ)

1995-01-01T23:59:59.000Z

196

DOE research on atmospheric aerosols  

SciTech Connect (OSTI)

Atmospheric aerosols are the subject of a significant component of research within DOE`s environmental research activities, mainly under two programs within the Department`s Environmental Sciences Division, the Atmospheric Radiation Measurement (ARM) Program and the Atmospheric Chemistry Program (ACP). Research activities conducted under these programs include laboratory experiments, field measurements, and theoretical and modeling studies. The objectives and scope of these programs are briefly summarized. The ARM Program is the Department`s major research activity focusing on atmospheric processes pertinent to understanding global climate and developing the capability of predicting global climate change in response to energy related activities. The ARM approach consists mainly of testing and improving models using long-term measurements of atmospheric radiation and controlling variables at highly instrumented sites in north central Oklahoma, in the Tropical Western Pacific, and on the North Slope of Alaska. Atmospheric chemistry research within DOE addresses primarily the issue of atmospheric response to emissions from energy-generation sources. As such this program deals with the broad topic known commonly as the atmospheric source-receptor sequence. This sequence consists of all aspects of energy-related pollutants from the time they are emitted from their sources to the time they are redeposited at the Earth`s surface.

Schwartz, S.E.

1995-11-01T23:59:59.000Z

197

Space Science : Atmosphere Greenhouse Effect  

E-Print Network [OSTI]

Space Science : Atmosphere Greenhouse Effect Part-5a Solar + Earth Spectrum IR Absorbers Grey Atmosphere Greenhouse Effect #12;Radiation: Solar and Earth Surface B"(T) Planck Ideal Emission Integrate at the carbon cycle #12;However, #12;Greenhouse Effect is Complex #12;PLANETARY ENERGY BALANCE G+W fig 3-5

Johnson, Robert E.

198

Full particle orbit tracing with RIO  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsing ZirconiaPolicyFeasibilityFieldMinds"OfficeTourFrom3,:A Storage Outlook51

199

Analysis of SOHO/MDI and TRACE Observations of Sunspot Torsional Oscillation in AR10421  

E-Print Network [OSTI]

Rotation of the leading sunspot of active region NOAA 10421 was investigated using magnetograms and Dopplergrams from the MDI instrument of the Solar and Heliospheric Observatory (SOHO), and white-light images from the Transition Region and Coronal Explorer (TRACE). The vertical, radial, and azimuthal axisymmetrical components of both magnetic and velocity field vectors were reconstructed for the sunspot umbra and penumbra. All three components of both vectors in the umbra and penumbra show torsional oscillations with the same rotational period of about 3.8 days. The TRACE white-light data also show that the sunspot umbra and penumbra are torsionally rotating with the same period. Possible mechanisms of sunspot torsional motions are discussed.

Gopasyuk, O S; 10.1088/0004-637X/729/2/95

2011-01-01T23:59:59.000Z

200

Larval Behavior and Natural Trace Element Signatures as Indicators of Crustacean Population Connectivity  

E-Print Network [OSTI]

variability in an atlas of trace element signatures forin creating a trace element atlas, our results show thatstage to create a trace element atlas in 2009 (Table 4.2),

Miller, Seth Haylen

2011-01-01T23:59:59.000Z

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


201

Trace Assessment for BWR ATWS Analysis  

SciTech Connect (OSTI)

A TRACE/PARCS input model has been developed in order to be able to analyze anticipated transients without scram (ATWS) in a boiling water reactor. The model is based on one developed previously for the Browns Ferry reactor for doing loss-of-coolant accident analysis. This model was updated by adding the control systems needed for ATWS and a core model using PARCS. The control systems were based on models previously developed for the TRAC-B code. The PARCS model is based on information (e.g., exposure and moderator density (void) history distributions) obtained from General Electric Hitachi and cross sections for GE14 fuel obtained from an independent source. The model is able to calculate an ATWS, initiated by the closure of main steam isolation valves, with recirculation pump trip, water level control, injection of borated water from the standby liquid control system and actuation of the automatic depres-surization system. The model is not considered complete and recommendations are made on how it should be improved.

Cheng, L.Y.; Diamond, D.; Arantxa Cuadra, Gilad Raitses, Arnold Aronson

2010-04-22T23:59:59.000Z

202

The propagation of light pollution in the atmosphere  

E-Print Network [OSTI]

Methods to map artificial night sky brightness and stellar visibility across large territories or their distribution over the entire sky at any site are based on the computation of the propagation of light pollution with Garstang models, a simplified solution of the radiative transfer problem in the atmosphere which allows a fast computation by reducing it to a ray-tracing approach. We present here up-to-date Extended Garstang Models (EGM) which provide a more general numerical solution for the radiative transfer problem applied to the propagation of light pollution in the atmosphere. We also present the LPTRAN software package, an application of EGM to high-resolution DMSP-OLS satellite measurements of artificial light emissions and to GTOPO30 digital elevation data, which provides an up-to-date method to predict the artificial brightness distribution of the night sky at any site in the World at any visible wavelength for a broad range of atmospheric situations and the artificial radiation density in the atm...

Cinzano, Pierantonio

2012-01-01T23:59:59.000Z

203

Algorithms and analysis for underwater vehicle plume tracing.  

SciTech Connect (OSTI)

The goal of this research was to develop and demonstrate cooperative 3-D plume tracing algorithms for miniature autonomous underwater vehicles. Applications for this technology include Lost Asset and Survivor Location Systems (L-SALS) and Ship-in-Port Patrol and Protection (SP3). This research was a joint effort that included Nekton Research, LLC, Sandia National Laboratories, and Texas A&M University. Nekton Research developed the miniature autonomous underwater vehicles while Sandia and Texas A&M developed the 3-D plume tracing algorithms. This report describes the plume tracing algorithm and presents test results from successful underwater testing with pseudo-plume sources.

Byrne, Raymond Harry; Savage, Elizabeth L. (Texas A& M University, College Station, TX); Hurtado, John Edward (Texas A& M University, College Station, TX); Eskridge, Steven E.

2003-07-01T23:59:59.000Z

204

Primitive magmas of the Earth and Moon : a petrologic investigation of magma genesis and evolution  

E-Print Network [OSTI]

Field studies, major and trace element geochemistry, isotopes, petrography, phase equilibrium experiments and thermodynamics are used investigate and understand primitive melts from the Earth and the Moon. Chapter 1 ...

Barr, Jay Arthur

2010-01-01T23:59:59.000Z

205

Hydrogen and helium traces in type Ib-c supernovae  

E-Print Network [OSTI]

The spectroscopic properties of a selected optical photospheric spectra of core collapse supernovae (CCSNe) are investigated.Special attention is devoted to traces of hydrogen at early phases. The generated spectra are found to match the observed ones reasonably well, including a list of only 23 candidate ions. Guided by SN Ib 1990I, the observed trough near 6300\\AA is attributed to H$\\alpha$ in almost all Type Ib events, although in some objects it becomes too weak to be discernible, especially at later phases. Alternative line identifications are discussed. Differences in the way hydrogen manifests its presence within CCSNe are highlighted. In Type Ib SNe, the H$\\alpha$ contrast velocity (i.e. line velocity minus the photospheric velocity) seems to increase with time at early epochs, reaching values as high as 8000 km s$^{-1}$ around 15-20 days after maximum and then remains almost constant. The derived photospheric velocities, indicate a lower velocity for Type II SNe 1987A and 1999em as compared to SN Ic 1994I and SN IIb 1993J, while Type Ib events display a somewhat larger variation. The scatter, around day 20, is measured to be $\\sim$5000 km s$^{-1}$. Following two simple approaches, rough estimates of ejecta and hydrogen masses are given. A mass of hydrogen of approximately 0.02 $M_\\odot$ is obtained for SN 1990I, while SNe 1983N and 2000H ejected $\\sim$0.008 $M_\\odot$ and $\\sim$0.08 $M_\\odot$ of hydrogen, respectively. SN 1993J has a higher hydrogen mass, $\\sim 0.7$ $M_\\odot$ with a large uncertainty. A low mass and thin hydrogen layer with very high ejection velocities above the helium shell, is thus the most likely scenario for Type Ib SNe. Some interesting and curious issues relating to oxygen lines suggest future investigations.

A. Elmhamdi; I. J. Danziger; D. Branch; B. Leibundgut; E. Baron; R. P. Kirshner

2006-04-04T23:59:59.000Z

206

A ray tracing investigation of light trapping due to grooves in solar cells  

E-Print Network [OSTI]

The biggest problem the world faces today is finding a renewable energy source as fossil fuel reserves being depleted, and the ongoing burning of fossil fuels is destroying environments all over the world. Solar energy is ...

Ruggiero, Christopher W

2007-01-01T23:59:59.000Z

207

Investigation of trace amounts of gas on microvave water-cut measurement  

E-Print Network [OSTI]

viscosity, improper separator operation, or poor separator design. Gas carry-under is believed to be one of the major causes of large allocation factors in oil and gas operations. Problems in clearly defining the three-phase stream as to flow regime...

Liu, Jin

2006-08-16T23:59:59.000Z

208

Atmospheric science and power production  

SciTech Connect (OSTI)

This is the third in a series of scientific publications sponsored by the US Atomic Energy Commission and the two later organizations, the US Energy Research and Development Adminstration, and the US Department of Energy. The first book, Meteorology and Atomic Energy, was published in 1955; the second, in 1968. The present volume is designed to update and to expand upon many of the important concepts presented previously. However, the present edition draws heavily on recent contributions made by atmospheric science to the analysis of air quality and on results originating from research conducted and completed in the 1970s. Special emphasis is placed on how atmospheric science can contribute to solving problems relating to the fate of combustion products released into the atmosphere. The framework of this book is built around the concept of air-quality modeling. Fundamentals are addressed first to equip the reader with basic background information and to focus on available meteorological instrumentation and to emphasize the importance of data management procedures. Atmospheric physics and field experiments are described in detail to provide an overview of atmospheric boundary layer processes, of how air flows around obstacles, and of the mechanism of plume rise. Atmospheric chemistry and removal processes are also detailed to provide fundamental knowledge on how gases and particulate matter can be transformed while in the atmosphere and how they can be removed from the atmosphere. The book closes with a review of how air-quality models are being applied to solve a wide variety of problems. Separate analytics have been prepared for each chapter.

Randerson, D. (ed.)

1984-07-01T23:59:59.000Z

209

Laser Atmospheric Studies with VERITAS  

E-Print Network [OSTI]

As a calibrated laser pulse propagates through the atmosphere, the amount of Rayleigh-scattered light arriving at the VERITAS telescopes can be calculated precisely. This technique was originally developed for the absolute calibration of ultra-high-energy cosmic-ray fluorescence telescopes but is also applicable to imaging atmospheric Cherenkov telescopes (IACTs). In this paper, we present two nights of laser data taken with the laser at various distances away from the VERITAS telescopes and compare it to Rayleigh scattering simulations.

C. M. Hui; for the VERITAS collaboration

2007-09-25T23:59:59.000Z

210

Time Series of Trace Element Concentrations Calculated from  

E-Print Network [OSTI]

a). A total of 120 samples were collected at sites within the Bay, outside the Golden Gate receives many waste water discharges, especially in areas south of the Dumbarton Bridge, that contain trace

211

Sodium storage facility trace heat system design description  

SciTech Connect (OSTI)

This document describes the SSF PLC Ladder Logic, Cross references, and the software that was used to control the amount of power applied to the SSF Trace Heated components.

Jones, D.D.

1997-06-12T23:59:59.000Z

212

TRACING FLUID SOURCES IN THE COSO GEOTHERMAL SYSTEM USING FLUID...  

Open Energy Info (EERE)

TRACING FLUID SOURCES IN THE COSO GEOTHERMAL SYSTEM USING FLUID-INCLUSION GAS CHEMISTRY Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Proceedings:...

213

Affine braids, Markov traces and the category O Rosa Orellana  

E-Print Network [OSTI]

, affine BMW algebras, cyclotomic BMW algebras, Markov traces, Jacobi-Trudi type identities, dual pairs [Ze of affine braid groups of type A, (d) We define the affine BMW algebra (Birman-Murakami-Wenzl) and show

Ram, Arun

214

Fragmentation Energetics of Clusters Relevant to Atmospheric...  

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

of Clusters Relevant to Atmospheric New Particle Formation. Fragmentation Energetics of Clusters Relevant to Atmospheric New Particle Formation. Abstract: The exact mechanisms by...

215

Computational and experimental research on infrared trace by human being contact  

SciTech Connect (OSTI)

The indoor detection of the human body's thermal trace plays an important role in the fields of infrared detecting, scouting, infrared camouflage, and infrared rescuing and tracking. Currently, quantitative description and analysis for this technology are lacking due to the absence of human infrared radiation analysis. To solve this problem, we study the heating and cooling process by observing body contact and removal on an object, respectively. Through finite-element simulation and carefully designed experiments, an analytical model of the infrared trace of body contact is developed based on infrared physics and heat transfer theory. Using this model, the impact of body temperature on material thermal parameters is investigated. The sensitivity of material thermal parameters, the thermal distribution, and the changes of the thermograph's contrast are then found and analyzed. Excellent matching results achieved between the simulation and the experiments demonstrate the strong impact of temperature on material thermal parameters. Conclusively, the new model, simulation, and experimental results are beneficial to the future development and implementation of infrared trace technology.

Xiong Zonglong; Yang Kuntao; Ding Wenxiu; Zhang Nanyangsheng; Zheng Wenheng

2010-06-20T23:59:59.000Z

216

Laser Based Techniques for Ultra Trace Isotope Production, Spectroscopy and Detection  

SciTech Connect (OSTI)

A variety of research activities in the field of fundamental and applied nuclear physics has evolved in the last years using resonantly tuned radiation from powerful lasers. The technique of resonance ionization spectroscopy has delivered outstanding results and found broad acceptance in the last years as a particularly efficient and highly selective method for rare and exotic radioisotope studies. It is used for production, spectroscopy and detection of these species and provides complete isobaric, high isotopic and even some isomeric selection, which altogether is needed for on-line investigation of short lived species far off stability as well as for ultra trace determination. Good overall efficiency pushes the experimental limits of detection in elemental trace analysis down to below 106 atoms per sample, and additionally isotopic selectivity as high as 3 ? 1012 has been demonstrated. The widespread potential of resonance ionization techniques is discussed, focusing on the experimental arrangements for applications in selective on-line isotope production, spectroscopy of rare radioisotopes and ultra trace determination of radiotoxic isotopes like 238Pu to 244Pu, 135,137Cs, 89,90Sr or 41Ca in environmental, technical and biomedical samples.

Wendt, K.; Blaum, K; Geppert, C; Muller, P; Nortershauser, W.; Schmitt, Annette; Schumann, P; Trautmann, Norbert; Bushaw, Bruce A.

2006-06-26T23:59:59.000Z

217

Solar Coronal Structures and Stray Light in TRACE  

E-Print Network [OSTI]

Using the 2004 Venus transit of the Sun to constrain a semi-empirical point-spread function for the TRACE EUV solar telescope, we have measured the effect of stray light in that telescope. We find that 43% of 171A EUV light that enters TRACE is scattered, either through diffraction off the entrance filter grid or through other nonspecular effects. We carry this result forward, via known-PSF deconvolution of TRACE images, to identify its effect on analysis of TRACE data. Known-PSF deconvolution by this derived PSF greatly reduces the effect of visible haze in the TRACE 171A images, enhances bright features, and reveals that the smooth background component of the corona is considerably less bright (and hence much more rarefied) than commonly supposed. Deconvolution reveals that some prior conlclusions about the Sun appear to have been based on stray light in the images. In particular, the diffuse background "quiet corona" becomes consistent with hydrostatic support of the coronal plasma; feature contrast is greatly increased, possibly affecting derived parameters such as the form of the coronal heating function; and essentially all existing differential emission measure studies of small features appear to be affected by contamination from nearby features. We speculate on further implications of stray light for interpretation of EUV images from TRACE and similar instruments, and advocate deconvolution as a standard tool for image analysis with future instruments such as SDO/AIA.

C. E. DeForest; P. C. H. Martens; M. J. Wills-Davey

2008-08-29T23:59:59.000Z

218

MAGIC: Marine ARM GPCI Investigation of Clouds  

SciTech Connect (OSTI)

The second Atmospheric Radiation Measurement (ARM) Mobile Facility (AMF2) will be deployed aboard the Horizon Lines cargo container ship merchant vessel (M/V) Spirit for MAGIC, the Marine ARM GPCI1 Investigation of Clouds. The Spirit will traverse the route between Los Angeles, California, and Honolulu, Hawaii, from October 2012 through September 2013 (except for a few months in the middle of this time period when the ship will be in dry dock). During this field campaign, AMF2 will observe and characterize the properties of clouds and precipitation, aerosols, and atmospheric radiation; standard meteorological and oceanographic variables; and atmospheric structure. There will also be two intensive observational periods (IOPs), one in January 2013 and one in July 2013, during which more detailed measurements of the atmospheric structure will be made.

Lewis, ER; Wiscombe, WJ; Albrecht, BA; Bland, GL; Flagg, CN; Klein, SA; Kollias, P; Mace, G; Reynolds, RM; Schwartz, SE; Siebesma, AP; Teixeira, J; Wood, R; Zhang, M

2012-10-03T23:59:59.000Z

219

Atmospheric Science Program. Summaries of research in FY 1994  

SciTech Connect (OSTI)

This report provides descriptions for all projects funded by ESD under annual contracts in FY 1994. Each description contains the project`s title; three-year funding history (in thousands of dollars); the contract period over which the funding applies; the name(s) of the principal investigator(s); the institution(s) conducting the projects; and the project`s objectives, products, approach, and results to date (for most projects older than one year). Project descriptions are categorized within the report according to program areas: atmospheric chemistry, atmospheric dynamics, and support operations. Within these categories, the descriptions are ordered alphabetically by principal investigator. Each program area is preceded by a brief text that defines the program area, states it goals and objectives, lists principal research questions, and identifies program managers. Appendixes provide the addresses and telephone numbers of the principal investigators and define the acronyms used.

NONE

1995-06-01T23:59:59.000Z

220

Search for Non-Standard Interactions by atmospheric neutrino  

E-Print Network [OSTI]

We investigate the effects of neutral current Non-Standard Interactions in propagation on atmospheric neutrino experiments such as Super-Kamiokande and Hyper-Kamiokande. With the ansatz where the parameters which have strong constraints from other experiments are neglected, we show how these experiments put constraints on the remaining parameters of the Non-Standard Interactions.

Shinya Fukasawa

2014-05-19T23:59:59.000Z

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


221

TRANSONIC HYDRODYNAMIC ESCAPE OF HYDROGEN FROM EXTRASOLAR PLANETARY ATMOSPHERES  

E-Print Network [OSTI]

. The model uses a two-dimensional energy depo- sition calculation instead of the single-layer heating planets is investigated using the model. The importance of hydrogen hydrodynamic escape for the longTRANSONIC HYDRODYNAMIC ESCAPE OF HYDROGEN FROM EXTRASOLAR PLANETARY ATMOSPHERES Feng Tian,1, 2 Owen

De Sterck, Hans

222

Effect of Sawtooth Activity on Tritium and Beam Deuterium Evolution in Trace Tritium Experiments on JET  

E-Print Network [OSTI]

Effect of Sawtooth Activity on Tritium and Beam Deuterium Evolution in Trace Tritium Experiments on JET

223

New Safety and Technical Challenges and Operational Experience on the JET First Trace Tritium Experiment  

E-Print Network [OSTI]

New Safety and Technical Challenges and Operational Experience on the JET First Trace Tritium Experiment

224

Meteorology and Atmospheric ISSN 0177-7971  

E-Print Network [OSTI]

of precipitation scav- enging are calculated for wet removal of sulfur dioxide (SO2) and ammonia (NH3) using of soluble trace gas in gaseous and liquid phases, mole l-1 c(G) Concentration of soluble trace gas Raindrop diameter, m DG Coefficient of diffusion in a gaseous phase, cm2 s-1 HA Henry's law constant, mole

Elperin, Tov

225

SIO 217a Atmospheric and Climate Sciences I: Atmospheric Thermodynamics  

E-Print Network [OSTI]

. Radiant Energy. Radiative Transfer. Transport.) 10-Oct W 3 More Transfer Processes 15-Oct M 4 4 Gas. Equation of State. Hydrostatic Equilibrium.) 3-Oct W 2 2.11 First and Second Laws and Characteristics. Precipitation Processes. Radiative Transfer in a Cloudy Atmosphere. Fogs, Stratus

Russell, Lynn

226

Linked Environments for Atmospheric Discovery Linked Environments for Atmospheric  

E-Print Network [OSTI]

Unidata Program Center #12;Linked Environments for Atmospheric Discovery The Team: 9 institutions and 105 MethodologyTraditional NWP Methodology STATIC OBSERVATIONS Radar Data Mobile Mesonets Surface Observations Satellites The Process is Entirely Prescheduled and Serial; It Does NOT Respond to the Weather! The Process

227

NETL SOFC: Atmospheric Pressure Systems  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Opticalhttp://www.fnal.gov/directorate/nalcal/nalcal02_07_05_files/nalcal.gifA Comparison95519LocalizedWaterTerryAtmospheric

228

The Atmospheric Response to Realistic Reduced Summer Arctic Sea Ice Anomalies  

E-Print Network [OSTI]

for the continued ice melt [Polyakov et al., 2005], and recent work shows that heat from the Atlantic layer can91 The Atmospheric Response to Realistic Reduced Summer Arctic Sea Ice Anomalies Uma S. Bhatt,1 and Robert A. Tomas3 The impact of reduced Arctic summer sea ice on the atmosphere is investigated by forcing

Bhatt, Uma

229

Discriminating robust and non-robust atmospheric circulation responses to global warming  

E-Print Network [OSTI]

Discriminating robust and non-robust atmospheric circulation responses to global warming Michael response to global warming in a set of atmospheric general circulation models (AGCMs) is investigated. The global-warmed climate is forced by a global pattern of warmed ocean surface temperatures

230

Syngas Production from Propane using Atmospheric Non-Thermal Plasma F. Ouni, A. Khacef*  

E-Print Network [OSTI]

1 Syngas Production from Propane using Atmospheric Non-Thermal Plasma F. Ouni, A. Khacef* and J. M Propane steam reforming using a sliding discharge reactor was investigated under atmospheric pressure in the discharge is less than 2 kW. The process efficiency is described in terms of propane conversion rate, steam

Paris-Sud XI, Université de

231

HEATING THE ATMOSPHERE ABOVE SUNSPOTS  

E-Print Network [OSTI]

become fragmented and twisted, and where they generate the necessary energy to heat the solar coronaHEATING THE ATMOSPHERE ABOVE SUNSPOTS David Alexander and Neal E. Hurlburt Lockheed Martin Solar, University of Cambridge, Cambridge, CB3 9EW, UK Abstract We present our results of a hybrid model of sunspots

Rucklidge, Alastair

232

13, 90179049, 2013 Stable atmospheric  

E-Print Network [OSTI]

ACPD 13, 9017­9049, 2013 Stable atmospheric methane in the 2000s I. Pison et al. Title Page Utrecht, Utrecht University, Utrecht, the Netherlands 3 SRON Netherlands Institute for Space Research, Utrecht, the Netherlands 4 Vrije Universiteit, Department of Systems Ecology, Amsterdam, the Netherlands 5

Paris-Sud XI, Université de

233

Space Science: Atmosphere Thermal Structure  

E-Print Network [OSTI]

Space Science: Atmosphere Part -2 Thermal Structure Review tropospheres Absorption of Radiation Adiabatic Lapse Rate ~ 9 K/km Slightly smaller than our estimate Pressure ~3000ft under ocean surface thickness (positive up) is the solar zenith angle Fs is the solar energy flux at frequency (when

Johnson, Robert E.

234

High explosives vapor detection by atmospheric sampling glow discharge ionization/tandem mass spectrometry  

SciTech Connect (OSTI)

The combination of atmospheric sampling glow discharge ionization with tandem mass spectrometry for the detection of traces of high explosives is described. Particular emphasis is placed on use of the quadrupole ion trap as the type of tandem mass spectrometer. Atmospheric sampling glow discharge provides a simple, rugged, and efficient means for anion formation while the quadrupole ion trap provides for efficient tandem mass spectrometry. Mass selective ion accumulation and non-specific ion activation methods can be used to overcome deleterious effects arising from ion/ion interactions. Such interactions constitute the major potential technical barrier to the use of the ion trap for real-time monitoring of targeted compounds in uncontrolled and highly variable matrices. Tailored waveforms can be used to effect both mass selective ion accumulation and ion activation. Concatenated tailored waveforms allow for both functions in a single experiment thereby providing the capability for monitoring several targeted species simultaneously. The combination of atmospheric sampling glow discharge ionization with a state-of-the-art analytical quadrupole ion trap is a highly sensitive and specific detector for traces of high explosives. The combination is also small and inexpensive relative to virtually any other form of tandem mass spectrometry. The science and technology underlying the glow discharge/ion trap combination is sufficiently mature to form the basis for an engineering effort to make the detector portable. 85 refs.

McLuckey, S.A.; Goeringer, D.E.; Asano, K.G. [Oak Ridge National Lab., TN (United States). Chemical and Analytical Sciences Div.

1996-02-01T23:59:59.000Z

235

AN OVERVIEW OF TOOL FOR RESPONSE ACTION COST ESTIMATING (TRACE)  

SciTech Connect (OSTI)

Tools and techniques that provide improved performance and reduced costs are important to government programs, particularly in current times. An opportunity for improvement was identified for preparation of cost estimates used to support the evaluation of response action alternatives. As a result, CH2M HILL Plateau Remediation Company has developed Tool for Response Action Cost Estimating (TRACE). TRACE is a multi-page Microsoft Excel{reg_sign} workbook developed to introduce efficiencies into the timely and consistent production of cost estimates for response action alternatives. This tool combines costs derived from extensive site-specific runs of commercially available remediation cost models with site-specific and estimator-researched and derived costs, providing the best estimating sources available. TRACE also provides for common quantity and key parameter links across multiple alternatives, maximizing ease of updating estimates and performing sensitivity analyses, and ensuring consistency.

FERRIES SR; KLINK KL; OSTAPKOWICZ B

2012-01-30T23:59:59.000Z

236

The electrodeless discharge at atmospheric pressure  

SciTech Connect (OSTI)

Recently the generation and applications of atmospheric pressure plasmas received increased interest in the plasma research community. Applications such as the surface modification of materials, and the decontamination of matter have been under investigation. In this context, the authors introduce a new means of generating an atmospheric pressure discharge, which is suitable for use in the above-mentioned applications, and in the treatment of undesirable or polluting gases, such as VOC's. This device is a capacitively coupled discharge. It is basically made of a non-conducting tube with two independent loops of wire wrapped around it, and separated by a distance d. A stable discharge is generated inside the tube when an AC voltage of few hundred volts to few kilovolts, at a frequency of few kilohertz, is applied between the loops. One end of the tube is completely open to the outside air, and a seed gas (generally a noble gas such as Helium) is introduced in the tube. The plasma generated with this method is weakly ionized, cold, and is maintained by a relatively low input power (few tens of watts, depending on the size of the tube). In this paper, the discharge electrical characteristics, its radiation emission characteristics, and the measurement of relevant plasma parameters will be presented.

Laroussi, M.

1999-07-01T23:59:59.000Z

237

Atmospheric Sciences Program summaries of research in FY 1993  

SciTech Connect (OSTI)

This document describes the activities and products of the Atmospheric Science Program of the Environmental Sciences Division, Office of Health and Environmental Research, Office of Energy Research, in FY 1993. Each description contains the project`s title; three-year funding history; the contract period over which the funding applies; the name(s) of the principal investigator(s); the institution(s) conducting the projects; and the project`s objectives, products, approach, and results to date. Project descriptions are categorized within the report according to program areas: atmospheric chemistry, atmospheric dynamics, and support operations. Within these categories, the descriptions are ordered alphabetically by principal investigator. Each program area is preceded by a brief text that defines the program area, states its goals and objectives, lists principal research questions, and identifies program managers. Appendixes provide the addresses and telephone numbers of the principal investigators and define the acronyms used. This document has been indexed to aid the reader in locating research topics, participants, and research institutions in the text and the project descriptions. Comprehensive subject, principal investigator, and institution indexes are provided at the end of the text for this purpose. The comprehensive subject index includes keywords from the introduction and chapter texts in addition to those from the project descriptions.

Not Available

1993-11-01T23:59:59.000Z

238

ARM ARM Atmospheric Radiation Measurement Atmospheric Radiation Measurement  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth (AOD)Productssondeadjustsondeadjust Documentation DataProductswsicloudwsicloudsummarygifAOS Processing

239

Climate Change and Emissions Impacts on Atmospheric PAH Transport to the Arctic  

E-Print Network [OSTI]

We investigate effects of 2000–2050 emissions and climate changes on the atmospheric transport of three polycyclic aromatic hydrocarbons (PAHs): phenanthrene (PHE), pyrene (PYR), and benzo[a]pyrene (BaP). We use the GEOS-Chem ...

Zhang, Yanxu

240

E-Print Network 3.0 - atmosphere box model Sample Search Results  

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

Ecology 6 Investigating Large-scale Contemporary CO2 Sources and Sinks Using Inverse Transport Modelling Applied to CO2, CH4 and CO Summary: in atmospheric CO2 concentration. 3....

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


241

Annular mode-like responses to external forcings in a simple atmospheric general circulation model  

E-Print Network [OSTI]

In this thesis, I investigate the response of a simple atmospheric general circulation model to applied forcings to learn whether the annular mode patterns are a preferred model response to the forcings. The thesis is ...

Ring, Michael J., 1979-

2008-01-01T23:59:59.000Z

242

Stability measurements of PPL atmospheric pressure arc  

SciTech Connect (OSTI)

Experiments on the stability of atmospheric pressure arcs have been started at PPL to understand and improve the performance of arc furnaces used for processing applications in metallurgy and hazardous waste treatment. Previous studies have suggested that the violent instabilities in such arcs may be due to kink modes. A 30 kW, 500 Amp CW DC experimental arc furnace was constructed with a graphite cathode and a molten steel anode. The arc plasma is diagnosed with 4000 frames/sec digital camera, Hall probes, and voltage and current monitors. Under certain conditions, the arc exhibits an intermittent helical instability, with the helix rotating at {approx}600 Hz. The nature of the instability is investigated. A possible instability mechanism is the self-magnetic field of the arc, with saturation occurring due to inhomogeneous heating in a helical arc. The effect of external DC and AC magnetic fields on the instability is investigated. Additionally, arc deflection due to external transverse magnetic field is investigated. The deflection angle is found to be proportional to the applied field, and is in good agreement with a simple model of the {rvec J} x {rvec b} force on the arc jet.

Roquemore, L.; Zweben, S.J. [Princeton Plasma Physics Lab., NJ (United States); Wurden, G.A. [Los Alamos National Lab., NM (United States)

1997-12-31T23:59:59.000Z

243

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

E-Print Network [OSTI]

fuel, biomass and biofuel, and industrial processes. Nitrous oxide emissions related to biofuel, the Global Warming Potential (GWP) is a more useful quantity. The GWP of N2O is the time- integrated radiative forcing following a 1 kg pulse emission of N2O, relative to the same quantity following a 1 kg

244

Trace metal capture by various sorbents during fluidized bed coal combustion  

SciTech Connect (OSTI)

This study investigated the potential of employing suitable sorbents to capture toxic trace metallic substances during fluidized bed coal combustion. Metal capture experiments were carried out in a 25.4 mm (1 inch) quartz fluidized bed combustor enclosed in an electric furnace. The metals involved were cadmium, lead, chromium, arsenic and selenium, and the sorbents tested included bauxite, zeolite and lime. In addition to the experimental investigations, potential metal-sorbent reactions were also identified through chemical equilibrium calculations based on the minimization of system free energy. The observed experimental results indicated that metal capture by sorbents can be as high as 88% depending on the metal species and sorbent involved. Results from thermodynamic equilibrium simulations suggested the formation of metal-sorbent compounds such as Pb{sub 2}SiO{sub 4}(s), CdAl{sub 2}O{sub 4}(s) and CdSiO{sub 3}(s) under the combustion conditions.

Ho, T.C.; Ghebremeskel, A.; Wang, K.S.; Hopper, J.R. [Lamar Univ., Beaumont, TX (United States)

1997-07-01T23:59:59.000Z

245

Modeling the atmospheric inputs of MTBE to groundwater systems  

SciTech Connect (OSTI)

A numerical transport model was used to calculate the movement of methyl-t-butyl ether (MTBE) and several other volatile organic compounds (VOCs) from the atmosphere downward through the unsaturated zone and into shallow groundwater. Simulations were carried out for periods as long as 10 years to investigate whether a gaseous atmospheric MTBE source at typical ambient concentrations could account for the presence of MTBE in shallow groundwater at the types of low ug/L levels that have been found during the National Water Quality Assessment Program currently being conducted by the US Geological Survey. The simulations indicate that downward movement of MTBE to shallow groundwater will be very slow when there is no net downward movement of water through the vadose zone. For example, for a vadose zone composed of fine sand, and assuming tens of cm of infiltration, then only a few years will be required for water at a water table that is 5.0 m below ground surface to attain MTBE levels that correspond to saturation with respect to the atmospheric source gaseous concentration. An on/off atmospheric source, as might occur in the seasonal use of MTBE, will lead to concentrations in shallow groundwater that correspond to saturation with the time-averaging atmospheric source concentration.

Pankow, J.F.; Johnson, R.L. [Oregon Graduate Inst., Portland, OR (United States). Dept. of Environmental Science and Engineering; Thomson, N.R. [Univ. of Waterloo, Ontario (Canada). Dept. of Civil Engineering

1995-12-31T23:59:59.000Z

246

Atmospheric-pressure plasma jet  

DOE Patents [OSTI]

Atmospheric-pressure plasma jet. A .gamma.-mode, resonant-cavity plasma discharge that can be operated at atmospheric pressure and near room temperature using 13.56 MHz rf power is described. Unlike plasma torches, the discharge produces a gas-phase effluent no hotter than 250.degree. C. at an applied power of about 300 W, and shows distinct non-thermal characteristics. In the simplest design, two concentric cylindrical electrodes are employed to generate a plasma in the annular region therebetween. A "jet" of long-lived metastable and reactive species that are capable of rapidly cleaning or etching metals and other materials is generated which extends up to 8 in. beyond the open end of the electrodes. Films and coatings may also be removed by these species. Arcing is prevented in the apparatus by using gas mixtures containing He, which limits ionization, by using high flow velocities, and by properly shaping the rf-powered electrode. Because of the atmospheric pressure operation, no ions survive for a sufficiently long distance beyond the active plasma discharge to bombard a workpiece, unlike low-pressure plasma sources and conventional plasma processing methods.

Selwyn, Gary S. (Los Alamos, NM)

1999-01-01T23:59:59.000Z

247

Auto-Generation of Communication Benchmark Traces Vivek Deshpande  

E-Print Network [OSTI]

Auto-Generation of Communication Benchmark Traces Vivek Deshpande North Carolina State University.edu Frank Mueller North Carolina State University Raleigh, NC, USA mueller@cs.ncsu.edu ABSTRACT Benchmarks creation is a tedious manual process. As a result, benchmarks tend to lag behind the development of complex

Mueller, Frank

248

GROUP TESTING MEETS TRAITOR TRACING Peter Meerwald and Teddy Furon  

E-Print Network [OSTI]

of the restriction of M to K. Many papers have proposed bounds on the minimal num- ber of tests or practical designs noise (q is the false positive test probability) [2]. Sejdinovic and Johnson recently considered bothGROUP TESTING MEETS TRAITOR TRACING Peter Meerwald and Teddy Furon INRIA Rennes Bretagne Atlantique

Paris-Sud XI, Université de

249

PALEOZOIC TRACE FOSSILS FROM THE KUFRA BASIN, LIBYA  

E-Print Network [OSTI]

PALEOZOIC TRACE FOSSILS FROM THE KUFRA BASIN, LIBYA BRIAN R. TURNER AND MICHAEL J. BENTONPaleozoicsuccessionin the southeastern part ofthe Kufra Basin, Libya, comprises a sequence of sedimentary facies up to 250 m thick THEK u m BASINin southeast Libya (Figure 1)occupiesan area of about 400,000km2and is filled

Benton, Michael

250

ANIMAL TRACING: BENEFITS IN CATTLE INDUSTRY AND PRIVATE INCENTIVES  

E-Print Network [OSTI]

AND PRIVATE INCENTIVES The economic implications of foreign animal diseases and their mitigation options haveANIMAL TRACING: BENEFITS IN CATTLE INDUSTRY AND PRIVATE INCENTIVES LEVAN ELBAKIDZE Assistant Research Professor Department of Agricultural Economics Texas A&M University College Station, TX, 77843

McCarl, Bruce A.

251

Execution Trace-Driven Automated Attack Signature Generation Susanta Nanda  

E-Print Network [OSTI]

Execution Trace-Driven Automated Attack Signature Generation Susanta Nanda Symantec Research Labs In its most general form, an attack signature is a program that can correctly determine if an input network packet se- quence can successfully attack a protected network appli- cation. Filter rules used

Chiueh, Tzi-cker

252

Age of Neoproterozoic Bilatarian Body and Trace Fossils, White  

E-Print Network [OSTI]

Age of Neoproterozoic Bilatarian Body and Trace Fossils, White Sea, Russia: Implications-bearing, shallow marine siliciclastic rocks in the Zimnie Gory section of the White Sea region indicates Ranges, South Australia (18); in the Poleta Formation in the White-Inyo Mountains and Upper Wood Canyon

253

Traces of Human Migrations in Helicobacter pylori Populations  

E-Print Network [OSTI]

Traces of Human Migrations in Helicobacter pylori Populations Daniel Falush,1 Thierry Wirth,1 Bodo Reichard,1 Elena Katzowitsch,8 Xiaoyan Wang,1 Mark Achtman,1 * Sebastian Suerbaum8 Helicobacter pylori tuberculosis (2), Haemophilus influenzae (3), and Helicobac- ter pylori (4­8). H. pylori, a Gram

Wirth, Thierry

254

Parallel Seismic Ray Tracing in a Global Earth Model  

E-Print Network [OSTI]

1 Parallel Seismic Ray Tracing in a Global Earth Model Marc Grunberg * , Stéphane Genaud of the Earth interior, and seismic tomogra- phy is a means to improve knowledge in this #28;eld. In order present in this paper the de- sign of a software program implement- ing a fast seismic ray

Genaud, Stéphane

255

Interactive Distributed Ray Tracing of Highly Complex Models  

E-Print Network [OSTI]

projects dealing with entire cars, ships, buildings, and processing plants. The complexity of such modelsInteractive Distributed Ray Tracing of Highly Complex Models Ingo Wald, Philipp Slusallek, Carsten- ulation of huge and complex 3D environments. Examples include large structural and mechanical engineering

Wald, Ingo

256

DARK MATTER Tracing the "Cosmic Web" with Diffuse Gas  

E-Print Network [OSTI]

1 DARK MATTER STARS GAS NEUTRAL HYDROGEN Tracing the "Cosmic Web" with Diffuse Gas Quasar Quasar Absorption Lines Keck/HIRES Quasar Spectrum Observer baryons dark matter potential isotropic UV only on and the radiation field intensity... H I #12;5 GOAL: the primordial dark matter power spectrum

Steidel, Chuck

257

From transformation traces to transformation rules: Assisting Model Driven Engineering  

E-Print Network [OSTI]

From transformation traces to transformation rules: Assisting Model Driven Engineering approach. In this paper we are interested in semi-automatically gen- erating labelled graph (model) transformations conform to a particu- lar syntax (meta-model). Those transformations are basic operations in model driven

Paris-Sud XI, Université de

258

Sulfuryl fluoride in the global atmosphere  

E-Print Network [OSTI]

The first calibrated high-frequency, high-precision, in situ atmospheric and archived air measurements of the fumigant sulfuryl fluoride (SO[subscript 2]F[subscript 2]) have been made as part of the Advanced Global Atmospheric ...

Muhle, J.

259

Spin tracking simulations in AGS based on ray-tracing methods - bare lattice, no snakes -  

SciTech Connect (OSTI)

This Note reports on the first simulations of and spin dynamics in the AGS using the ray-tracing code Zgoubi. It includes lattice analysis, comparisons with MAD, DA tracking, numerical calculation of depolarizing resonance strengths and comparisons with analytical models, etc. It also includes details on the setting-up of Zgoubi input data files and on the various numerical methods of concern in and available from Zgoubi. Simulations of crossing and neighboring of spin resonances in AGS ring, bare lattice, without snake, have been performed, in order to assess the capabilities of Zgoubi in that matter, and are reported here. This yields a rather long document. The two main reasons for that are, on the one hand the desire of an extended investigation of the energy span, and on the other hand a thorough comparison of Zgoubi results with analytical models as the 'thin lens' approximation, the weak resonance approximation, and the static case. Section 2 details the working hypothesis : AGS lattice data, formulae used for deriving various resonance related quantities from the ray-tracing based 'numerical experiments', etc. Section 3 gives inventories of the intrinsic and imperfection resonances together with, in a number of cases, the strengths derived from the ray-tracing. Section 4 gives the details of the numerical simulations of resonance crossing, including behavior of various quantities (closed orbit, synchrotron motion, etc.) aimed at controlling that the conditions of particle and spin motions are correct. In a similar manner Section 5 gives the details of the numerical simulations of spin motion in the static case: fixed energy in the neighboring of the resonance. In Section 6, weak resonances are explored, Zgoubi results are compared with the Fresnel integrals model. Section 7 shows the computation of the {rvec n} vector in the AGS lattice and tuning considered. Many details on the numerical conditions as data files etc. are given in the Appendix Section, pages A and sqs.

Meot F.; Ahrens& #44; L.; Glenn& #44; J.; Huang& #44; H.; Luccio& #44; A.; MacKay& #44; W.W.; Roser& #44; T.; Tsoupas& #44; N.

2009-09-01T23:59:59.000Z

260

Radar range measurements in the atmosphere.  

SciTech Connect (OSTI)

The earth's atmosphere affects the velocity of propagation of microwave signals. This imparts a range error to radar range measurements that assume the typical simplistic model for propagation velocity. This range error is a function of atmospheric constituents, such as water vapor, as well as the geometry of the radar data collection, notably altitude and range. Models are presented for calculating atmospheric effects on radar range measurements, and compared against more elaborate atmospheric models.

Doerry, Armin Walter

2013-02-01T23:59:59.000Z

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


261

Quantitative determination of atmospheric hydroperoxyl radical  

DOE Patents [OSTI]

A method for the quantitative determination of atmospheric hydroperoxyl radical comprising: (a) contacting a liquid phase atmospheric sample with a chemiluminescent compound which luminesces on contact with hydroperoxyl radical; (b) determining luminescence intensity from the liquid phase atmospheric sample; and (c) comparing said luminescence intensity from the liquid phase atmospheric sample to a standard luminescence intensity for hydroperoxyl radical. An apparatus for automating the method is also included.

Springston, Stephen R. (Upton, NY); Lloyd, Judith (Westbury, NY); Zheng, Jun (Stony Brook, NY)

2007-10-23T23:59:59.000Z

262

Trace Metal Source Terms in Carbon Sequestration Environments  

SciTech Connect (OSTI)

ABSTRACT: Carbon dioxide sequestration in deep saline and depleted oil geologic formations is feasible and promising; however, possible CO2 or CO2-saturated brine leakage to overlying aquifers may pose environmental and health impacts. The purpose of this study was to experimentally define to provide a range of concentrations that can be used as the trace element source term for reservoirs and leakage pathways in risk simulations. Storage source terms for trace metals are needed to evaluate the impact of brines leaking into overlying drinking water aquifers. The trace metal release was measured from cements and sandstones, shales, carbonates, evaporites, and basalts from the Frio, In Salah, Illinois Basin, Decatur, Lower Tuscaloosa, Weyburn-Midale, Bass Islands, and Grand Ronde carbon sequestration geologic formations. Trace metal dissolution was tracked by measuring solution concentrations over time under conditions (e.g., pressures, temperatures, and initial brine compositions) specific to the sequestration projects. Existing metrics for maximum contaminant levels (MCLs) for drinking water as defined by the U.S. Environmental Protection Agency (U.S. EPA) were used to categorize the relative significance of metal concentration changes in storage environments because of the presence of CO2. Results indicate that Cr and Pb released from sandstone reservoir and shale cap rocks exceed the MCLs byan order of magnitude, while Cd and Cu were at or below drinking water thresholds. In carbonate reservoirs As exceeds the MCLs by an order of magnitude, while Cd, Cu, and Pb were at or below drinking water standards. Results from this study can be used as a reasonable estimate of the trace element source term for reservoirs and leakage pathways in risk simulations to further evaluate the impact of leakage on groundwater quality.

Karamalidis, Athanasios; Torres, Sharon G.; Hakala, Jacqueline A.; Shao, Hongbo; Cantrell, Kirk J.; Carroll, Susan A.

2013-01-01T23:59:59.000Z

263

Atmospheric Radiation Measurement Radiative Atmospheric Divergence using ARM Mobile  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth (AOD)ProductssondeadjustsondeadjustAbout theOFFICEAmesApplication2ArgonneAssemblyDemandPlasma4August3Radiative

264

Atmospheric Radiation Measurement (ARM) Climate Research Facility and Atmospheric  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series to someone byDear Friend,Arthur J. Nozik -GrownAnAtmospheric Radiation

265

Atmospheric Lifetime of Fossil Fuel Carbon Dioxide  

E-Print Network [OSTI]

Atmospheric Lifetime of Fossil Fuel Carbon Dioxide David Archer,1 Michael Eby,2 Victor Brovkin,3 released from combustion of fossil fuels equilibrates among the various carbon reservoirs of the atmosphere literature on the atmospheric lifetime of fossil fuel CO2 and its impact on climate, and we present initial

Scherer, Norbert F.

266

Impacts of Atmospheric Anthropogenic Nitrogen on the  

E-Print Network [OSTI]

anthropogenic carbon dioxide may result from this atmospheric nitrogen fertilization, leading to a decreaseImpacts of Atmospheric Anthropogenic Nitrogen on the Open Ocean R. A. Duce,1 * J. LaRoche,2 K quantities of atmospheric anthropogenic fixed nitrogen entering the open ocean could account for up to about

Ward, Bess

267

Ch4. Atmosphere and Surface Energy Balances  

E-Print Network [OSTI]

than red light. #12;The Electromagnetic Spectrum 8% 47% 45% 100% solar radiation #12;Blue Sky, Red;Energy Pathways #12;Solar radiation transfer in the atmosphere Solar radiation Reflection Atmosphere or performing any work. #12;Solar radiation transfer in the atmosphere Solar radiation Reflection Transmission

Pan, Feifei

268

Proof of the Atmospheric Greenhouse Effect  

E-Print Network [OSTI]

A recently advanced argument against the atmospheric greenhouse effect is refuted. A planet without an infrared absorbing atmosphere is mathematically constrained to have an average temperature less than or equal to the effective radiating temperature. Observed parameters for Earth prove that without infrared absorption by the atmosphere, the average temperature of Earth's surface would be at least 33 K lower than what is observed.

Smith, Arthur P

2008-01-01T23:59:59.000Z

269

ATS621, Fall 2013 Atmospheric Chemistry  

E-Print Network [OSTI]

ATS621, Fall 2013 Atmospheric Chemistry Tuesdays and Thursdays, 10 ­ 10:50, 212B ACRC) 491-8587 Teaching Assistant: Lauren Potter Atmospheric Chemistry Bldg., Room 11 Lepotter, transport, chemistry and deposition impact atmospheric chemical composition; 2) Explain the chemical

270

ATS621, Fall 2014 Atmospheric Chemistry  

E-Print Network [OSTI]

ATS621, Fall 2014 Atmospheric Chemistry Monday and Wednesday, 9 ­ 9:50, 212B ACRC Instructor: Prof) Understand quantitatively how emissions, transport, chemistry and deposition impact atmospheric chemical to Atmospheric Chemistry, D.J. Jacob Princeton University Press, 1999 PDF versions of the chapters can

Collett Jr., Jeffrey L.

271

Evaluation of Health Risks of Atmospheric Pollutants  

E-Print Network [OSTI]

4 5- (DRAFT) Evaluation of Health Risks of Atmospheric Pollutants Guy Landrieu INERIS Institut, Stuttgart : Germany (1995)" #12;INERIS: Evaluation of health risks of atmospheric pollutants (DRAFT may 1995) Evaluation of health risks of atmospheric pollutants Summary 1 Introduction 2 Background 3 Harmfulness

Paris-Sud XI, Université de

272

Zevenhoven & Kilpinen TRACE ELEMENTS, ALKALI METALS 19.6.2001 8-1 Chapter 8 Trace elements,  

E-Print Network [OSTI]

air pollutants), "known or suspected of causing cancer or other serious health effects" (see also, in part stemming from anthropogenic sources, i.e. pollution. In wastes and waste-derived fuels the "trace to fouling of turbine blades (mainly Ca)or pollute or poison catalysts (mainly As) or sorbents downstream

Zevenhoven, Ron

273

Trace metal uptake and accumulation pathways in Kemp's ridley sea turtles (Lepidochelys kempii)  

E-Print Network [OSTI]

Little is known of trace metal concentrations and their possible role in the mortality of critically endangered Kemp??s ridley sea turtles (Lepidochelys kempii). Research described herein characterized concentrations of seven trace metals ?? Ag, Cd...

Wang, Hui-Chen

2005-08-29T23:59:59.000Z

274

Trace Reduction for Virtual Memory Simulations Scott F. Kaplan, Yannis Smaragdakis, and Paul R. Wilson  

E-Print Network [OSTI]

Trace Reduction for Virtual Memory Simulations Scott F. Kaplan, Yannis Smaragdakis, and Paul R reduction. Neither requires that the simulator be modi ed to accept the reduced trace. This research

Smaragdakis, Yannis

275

Combining sedimentological, trace metal (Mn, Mo) and molecular evidence for reconstructing past water-column  

E-Print Network [OSTI]

Combining sedimentological, trace metal (Mn, Mo) and molecular evidence for reconstructing past online 22 June 2013 Abstract Here, we present sedimentological, trace metal, and molecular evidence underscores the value of combining sedimentological, geochemical, and microbiological approaches

Wehrli, Bernhard

276

Atmospheric Sciences Program Department of Marine, Earth and Atmospheric Sciences (MEAS)  

E-Print Network [OSTI]

atmospheric chemistry/air quality, boundary layer and air pollution meteorology, regional/global climatology MODELING OF MULTIPLE AIR POLLUTANTS AT URBAN AND REGIONAL SCALES Our atmosphere is a complex systemAtmospheric Sciences Program Department of Marine, Earth and Atmospheric Sciences (MEAS) (http

Parker, Matthew D. Brown

277

atmospheric nitrogen fluorescence: Topics by E-print Network  

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

Websites Summary: Greenhouse Effect and Atmospheric Warming Atmosphere absorbs heat energy A real greenhouse traps heatCh4. Atmosphere and Surface Energy Balances...

278

atmospheric pressure surface: Topics by E-print Network  

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

K. 27 Ch4. Atmosphere and Surface Energy Balances Geosciences Websites Summary: Greenhouse Effect and Atmospheric Warming Atmosphere absorbs heat energy A real greenhouse traps...

279

Sandia National Laboratories: atmospheric chemistry  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1development Sandia, NREL Release Wavearc-fault circuit interrupterchemistry

280

Sandia National Laboratories: atmospheric research  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1development Sandia, NREL Release Wavearc-fault circuit interrupterchemistryresearch

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


281

Atmosphere to Electrons Program Overview  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-Up fromDepartmentTie Ltd: Scope Change #1Impacts |Services SubcommitteeAtmosphere to

282

Matrix Optimization for the MALDI-TOF-MS Analysis of Trace Biodiesel Components (Poster)  

SciTech Connect (OSTI)

Trace biodiesel components that could reduce the fuel's operability in cold weather are analyzed using MALDI-TOF mass spectrometry.

McAlpin, C. R.; Voorhees, K. J.; Alleman, T. L.; McCormick, R. L.

2009-01-01T23:59:59.000Z

283

Atmospheric sciences division. Annual report, fiscal year 1981  

SciTech Connect (OSTI)

The research activities of the Atmospheric Sciences Division of the Department of Energy and Environment for FY 1981 are presented. Facilities and major items of equipment are described. Research programs are summarized in three categories, modeling, field and laboratory experiments and data management and analysis. Each program is also described individually with title, principal investigator, sponsor and funding levels for FY 1981 and FY 1982. Future plans are summarized. Publications for FY 1981 are listed with abstracts. A list of personnel is included.

Raynor, G.S. (ed.) [ed.

1981-12-01T23:59:59.000Z

284

STEIN'S METHOD, HEAT KERNEL, AND TRACES OF POWERS OF ELEMENTS OF COMPACT LIE GROUPS  

E-Print Network [OSTI]

STEIN'S METHOD, HEAT KERNEL, AND TRACES OF POWERS OF ELEMENTS OF COMPACT LIE GROUPS JASON FULMAN Abstract. Combining Stein's method with heat kernel techniques, we show that the trace of the jth power There is a large literature on the traces of powers of random elements of compact Lie groups. One of the earliest

Fulman, Jason

285

STEIN'S METHOD, HEAT KERNEL, AND TRACES OF POWERS OF ELEMENTS OF COMPACT LIE GROUPS  

E-Print Network [OSTI]

STEIN'S METHOD, HEAT KERNEL, AND TRACES OF POWERS OF ELEMENTS OF COMPACT LIE GROUPS JASON FULMAN Abstract. Combining Stein's method with heat kernel techniques, we show that the trace of the jth power on the traces of powers of random elements of compact Lie groups. One of the earliest results is due to Diaconis

Fulman, Jason

286

LES BIG DATA ET LA RELATION CLIENT Quand les traces numriques organisent l'change marchand  

E-Print Network [OSTI]

LES BIG DATA ET LA RELATION CLIENT Quand les traces numériques organisent l'échange marchand Auteur traces numériques organisent l'échange marchand Résumé : Avec le mouvement de digitalisation du commerce marchands font des comportements des consommateurs. Ces traces numériques doivent donc permettre aux

Paris-Sud XI, Université de

287

Microbial acidification and pH effects on trace element release from sewage sludge  

E-Print Network [OSTI]

Microbial acidification and pH effects on trace element release from sewage sludge Shabnam Qureshia; Trace metals; Mobilization; Land application 1. Introduction Trace elements in land-applied wastewater sludge (sewage biosolids) are potentially phyto- or zoo-toxic if present in sufficient concentration

Walter, M.Todd

288

CAN THE GEOCHEMICAL TOPSOIL ATLAS BE USED TO PREDICT TRACE METAL DEFICIENCY IN CATTLE?  

E-Print Network [OSTI]

CAN THE GEOCHEMICAL TOPSOIL ATLAS BE USED TO PREDICT TRACE METAL DEFICIENCY IN CATTLE? By: Emily courtesy LTSN Bioscience. http://bio.ltsn.ac.uk/imagebank/ Just as trace metals are important to humans to the structural stability of molecules and membranes. For these reasons, incorrect trace metal levels can

Nottingham, University of

289

A Thesis for the Degree of Master Design of Fair Tracing E-cash  

E-Print Network [OSTI]

A Thesis for the Degree of Master Design of Fair Tracing E-cash System based on Blind Signature Tracing E-cash System based on Blind Signature #12;Design of Fair Tracing E-cash System based on Blind and Communications University A thesis submitted to the faculty of Information and Com- munications University

Kim, Kwangjo

290

TRACE METAL CONTENT OF COAL AND ASH AS DETERMINED USING SCANNINGELECTRON MICROSCOPYWITE  

E-Print Network [OSTI]

TRACE METAL CONTENT OF COAL AND ASH AS DETERMINED USING SCANNINGELECTRON MICROSCOPYWITE WAVELENGTH Grand Forks, ND 58202-9018 Keywords: scanning electron microscopy, trace metals, coal analysis ABSTRACT Scanningelectron microscopy with wavelength-dispersive spectrometry has been used to measure trace metals in coal

Laughlin, Robert B.

291

Ray tracing a three dimensional scene using a grid  

DOE Patents [OSTI]

Ray tracing a three-dimensional scene using a grid. One example embodiment is a method for ray tracing a three-dimensional scene using a grid. In this example method, the three-dimensional scene is made up of objects that are spatially partitioned into a plurality of cells that make up the grid. The method includes a first act of computing a bounding frustum of a packet of rays, and a second act of traversing the grid slice by slice along a major traversal axis. Each slice traversal includes a first act of determining one or more cells in the slice that are overlapped by the frustum and a second act of testing the rays in the packet for intersection with any objects at least partially bounded by the one or more cells overlapped by the frustum.

Wald, Ingo; Ize, Santiago; Parker, Steven G; Knoll, Aaron

2013-02-26T23:59:59.000Z

292

Solar limb darkening and ray trace evaluation of solar concentrators  

SciTech Connect (OSTI)

A comparison of different correlations commonly used to describe the limb darkening effect is made. A somewhat new correlation is proposed which predicts the values to within +- 1.5% of the experimental values. Using a conventional ray trace technique and assigning proper weight factors to each ray, the distribution of the local concentration ratio over a flat absorber placed in the focal plane of a cylindrical parabolic trough is also determined.

Negi, B.S.; Bhowmik, N.C.; Mathur, S.S.; Kandpal, T.C.

1985-01-15T23:59:59.000Z

293

Trace determination of lead by helium-4 activation analysis  

E-Print Network [OSTI]

glass samples doped with 61 different trace elements at nominal 500 to 1 ppm level concentrations. We evaluated the measurement sensitivities of two methods for alpha counting, i. e. , surface barrier detector and nuclear track detectors. Detection.... An automated system synchronized irradiation, solenoid operation, and data acquisition. Prior to irradiation, the solenoid was energized to position the aluminum sheet in front of the detector. The cyclotron's beam pulser system then began irradiation...

Vargas Bernal, Maria E.

2012-06-07T23:59:59.000Z

294

Trace Metal Source Terms in Carbon Sequestration Environments  

SciTech Connect (OSTI)

Carbon dioxide sequestration in deep saline and depleted oil geologic formations is feasible and promising, however, possible CO{sub 2} or CO{sub 2}-saturated brine leakage to overlying aquifers may pose environmental and health impacts. The purpose of this study was to experimentally define trace metal source terms from the reaction of supercritical CO{sub 2}, storage reservoir brines, reservoir and cap rocks. Storage reservoir source terms for trace metals are needed to evaluate the impact of brines leaking into overlying drinking water aquifers. The trace metal release was measured from sandstones, shales, carbonates, evaporites, basalts and cements from the Frio, In Salah, Illinois Basin – Decatur, Lower Tuscaloosa, Weyburn-Midale, Bass Islands and Grand Ronde carbon sequestration geologic formations. Trace metal dissolution is tracked by measuring solution concentrations over time under conditions (e.g. pressures, temperatures, and initial brine compositions) specific to the sequestration projects. Existing metrics for Maximum Contaminant Levels (MCLs) for drinking water as defined by the U.S. Environmental Protection Agency (U.S. EPA) were used to categorize the relative significance of metal concentration changes in storage environments due to the presence of CO{sub 2}. Results indicate that Cr and Pb released from sandstone reservoir and shale cap rock exceed the MCLs by an order of magnitude while Cd and Cu were at or below drinking water thresholds. In carbonate reservoirs As exceeds the MCLs by an order of magnitude, while Cd, Cu, and Pb were at or below drinking water standards. Results from this study can be used as a reasonable estimate of the reservoir and caprock source term to further evaluate the impact of leakage on groundwater quality.

Karamalidis, Athanasios K.; Torres, Sharon G.; Hakala, J. Alexandra; Shao, Hongbo; Cantrell, Kirk J.; Carroll, Susan

2013-01-01T23:59:59.000Z

295

Control of Trace Metal Emissions During Coal Combustion  

SciTech Connect (OSTI)

Emissions of toxic trace metals in the form of metal fumes or submicron particulate from a coal-fired combustion source have received greater environmental and regulatory concern over the past years. Current practice of controlling these emissions is to collect them at the cold-end of the process by air-pollution control devices (APCDS) such as electrostatic precipitators and baghouses. However, trace metal fumes may not always be effectively collected by these devices because the formed fumes are extremely small. The proposed research is to explore the opportunities for improved control of toxic trace metal emissions, alternatively, at the hot-end of the coal combustion process, i.e., in the combustion chamber. The technology proposed is to prevent the metal fumes from forming during the process, which would effectively eliminate the metal emission problems. Specifically, the technology is to employ suitable sorbents to (1) reduce the amount of metal volatilization during combustion and (2) capture volatilized metal vapors. The objectives of the project are to demonstrate the technology and to characterize the metal capture process during coal combustion in a fluidized bed combustor.

Thomas C. Ho

1996-10-01T23:59:59.000Z

296

atmospheric research community: Topics by E-print Network  

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

University Corporation for Atmospheric Research Geosciences Websites Summary: University Corporation for Atmospheric Research CIGNA DENTAL PREFERRED PROVIDER INSURANCE EFFECTIVE...

297

An Infrared Spectral Library for Atmospheric Environmental Monitoring...  

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

An Infrared Spectral Library for Atmospheric Environmental Monitoring. An Infrared Spectral Library for Atmospheric Environmental Monitoring. Abstract: Infrared (IR) spectroscopy...

298

Parallization of Stellar Atmosphere Codes  

E-Print Network [OSTI]

Parallel computing has turned out to be the enabling technology to solve complex physical systems. However, the transition from shared memory, vector computers to massively parallel, distributed memory systems and, recently, to hybrid systems poses new challenges to the scientist. We want to present a cook-book (with a very strong, personal bias) based on our experience with parallization of our existing codes. Some of the general tools and communication libraries are discussed. Our approach includes a mixture of algorithm, domain and physical module based parallization. The advantages, scalability and limitations of each are discussed at some examples. We want show that it becomes easier to write parallel code with increasing complexity of the physical problem making stellar atmosphere codes beyond the classical assumptions very suitable.

P. Hoeflich

2002-09-19T23:59:59.000Z

299

Time dependences of atmospheric Carbon dioxide fluxes  

E-Print Network [OSTI]

Understanding the lifetime of CO2 in the atmosphere is critical for predictions regarding future climate changes. A simple mass conservation analysis presented here generates tight estimations for the atmosphere's retention time constant. The analysis uses a leaky integrator model that combines the observed deficit (only less than 40% of CO2 produced from combustion of fossil fuels is actually retained in the atmosphere, while more than 60% is continuously shed) with the exponential growth of fossil fuel burning. It reveals a maximum characteristic time of less than 23 year for the transfer of atmospheric CO2 to a segregation sink. This time constant is further constrained by the rapid disappearance of 14C after the ban of atmospheric atomic bomb tests, which provides a lower limit of 18 years for this transfer. The study also generates evaluations of other CO2 fluxes, exchange time constants and volumes exchanged. Analysis of large harmonic oscillations of atmospheric CO2 concentration, often neglected in th...

DeSalvo, Riccardo

2014-01-01T23:59:59.000Z

300

12.815 Atmospheric Radiation, Fall 2005  

E-Print Network [OSTI]

Introduction to the physics of atmospheric radiation and remote sensing including use of computer codes. Radiative transfer equation including emission and scattering, spectroscopy, Mie theory, and numerical solutions. ...

Prinn, Ronald G.

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


301

Urban Atmospheres captures a unique, synergistic moment  

E-Print Network [OSTI]

Urban Atmospheres captures a unique, synergistic moment ­ expanding urban populations, rapid EDITORS Eric Paulos Intel Research eric@paulos.net Tom Jenkins Royal College of Art thomas

Paulos, Eric

302

Atmospheric and Surface Science Research Laboratory  

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

Atmospheric and Surface Science Research Laboratory Idaho National Laboratory (INL) researchers are contributing to the scientific understanding of contaminant transport through...

303

atmospheres: Topics by E-print Network  

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

to optical depth perturbations. In Earth-type atmospheres sustained planetary greenhouse effect with a stable ground surface temperature can only exist at a particular...

304

atmosphere: Topics by E-print Network  

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

to optical depth perturbations. In Earth-type atmospheres sustained planetary greenhouse effect with a stable ground surface temperature can only exist at a particular...

305

atmospherics: Topics by E-print Network  

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

to optical depth perturbations. In Earth-type atmospheres sustained planetary greenhouse effect with a stable ground surface temperature can only exist at a particular...

306

National Center for Atmospheric Research annual report, fiscal year 1991. Report for 1 October 1990-30 September 1991  

SciTech Connect (OSTI)

The National Center for Atmospheric Research (NCAR) annual report for fiscal year 1991 is presented. NCAR's projects for the period included investigations of air pollution from the oil well fires in Kuwait, a solar eclipse, thunderstorms in central Florida, the El Nino current, greenhouse processes, and upper atmosphere phenomena.

Warner, L.

1992-06-01T23:59:59.000Z

307

P8.13 CONTRAIL STUDIES AND FORECASTS IN THE SUBARCTIC ATMOSPHERE ABOVE FAIRBANKS, Martin Stuefer* and Gerd Wendler  

E-Print Network [OSTI]

, the radiative characteristics of contrails are similar to those of thin layers of naturally occurring cirrus are of interest for scientists investigating atmospheric radiation transfer processes, the chemical state of temperatures in the lower atmosphere by reducing the net radiation to the surface during the day and reducing

Stuefer, Martin

308

Project title: Principal Investigator(s)  

E-Print Network [OSTI]

No. 0123 Project title: Principal Investigator(s): Funding Agency: Submission deadline: Instruments, redeployment costs) OBS engineering and technical support cost: (on shore and at sea) Shipping: Travel and technical support for OBS operations at sea. The cost of providing this support (e.g., instrument charges

Menke, William

309

Anomalous atmospheric hydrologic processes associated with ENSO  

SciTech Connect (OSTI)

In this paper, we study the structure of anomalous atmospheric hydrologic processes associated with El Nino Southern Oscillation (ENSO) using re-analysis data obtained from the Goddard Earth Observing System (GEOS) Data Assimilation Office (DAO) and outputs from GEOS climate model simulations. Our results show a very pronounced tropospheric warming over the equatorial central Pacific, with a double maxima located in 15{degrees}N and 15{degrees}/S, symmetric about the equator. This anomaly is in agreement with those found in earlier studies based on satellite estimates and is consistent with the predictions of Rossby wave dynamics. Most interestingly, we find a strong stratospheric temperature signal, which is tightly coupled to, but of opposite sign to the tropospheric anomaly. This temperature anomaly pattern is validated by the GCM simulations with respect to anomalous ENSO sea surface temperature (SST) forcing. The role of interaction between radiation and hydrologic cycle in producing and maintaining the ENSO anomalies is also investigated. 8 refs., 4 figs.

Lau, K.M.; Ho, C.H. [NASA/Goddard Space Flight Center, Greenbelt, MD (United States)

1997-11-01T23:59:59.000Z

310

Investigating Extreme Ultraviolet Lithography Mask Defects  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsingFunInfrared LandResponses toInvestigating Extreme UltravioletInvestigating

311

Multiple stirred-flow chamber assembly for simultaneous automatic fractionation of trace elements in fly ash samples using a multisyringe-based flow system  

SciTech Connect (OSTI)

There is a current trend in automation of leaching tests for trace elements in solid matrixes by use of flow injection based column approaches. However, as a result of the downscaled dimensions of the analytical manifold and execution of a single extraction at a time, miniaturized flow-through column approaches have merely found applications for periodic investigations of trace element mobility in highly homogeneous environmental solids. A novel flow-based configuration capitalized on stirred-flow cell extraction is proposed in this work for simultaneous fractionation of trace elements in three solid wastes with no limitation of sample amount up to 1.0 g. A two-step sequential extraction scheme involving water and acetic acid (or acetic acid/acetate buffer) is utilized for accurate assessment of readily mobilizable fractions of trace elements in fly ash samples. The W automated extraction system features high tolerance to flow rates ({<=} 6 mL min{sup -1}) and, as opposed to operationally defined batchwise methods, the solid to liquid ratio is not a critical parameter for, determination of overall readily leachable trace elements provided that exhaustive extraction is ensured. Analytical performance of the dynamic extractor is evaluated for fractionation analysis of a real coal fly ash and BCR-176R fly ash certified reference material. No significant differences were found at the 0.05 significance level between summation of leached concentrations in each fraction plus residue and concentration values of BCR-176R, thus revealing the accuracy of the automated method. Overall extractable pools of trace metals in three samples are separated in less than 115 min, even for highly contaminated ashes, versus 18-24 h per fraction in equilibrium leaching tests. The multiple stirred-flow cell assembly is thus suitable for routine risk assessment studies of industrial solid byproduct.

Boonjob, W.; Miro, M.; Cerda, V. [Mahidol University, Bangkok (Thailand). Faculty of Science

2008-10-01T23:59:59.000Z

312

Atmospheric Environment 37 (2003) 21932205 Atmospheric lifetime as a probe of radical chemistry in the  

E-Print Network [OSTI]

carried out to study OH photochemistry in the troposphere (Eisele et al., 1994; Atlas and Ridley, 1996 study of a very broad range of trace species and included measurements of [OH] (Mount and Williams, 1997

313

Response of global soil consumption of atmospheric methane to changes in atmospheric climate and nitrogen deposition  

E-Print Network [OSTI]

Soil consumption of atmospheric methane plays an important secondary role in regulating the atmospheric CH4 budget, next to the dominant loss mechanism involving reaction with the hydroxyl radical (OH). Here we used a ...

Zhuang, Qianlai

314

Investigating Iron Ions | EMSL  

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

Investigating Iron Ions Investigating Iron Ions Computer code provides detailed predictions of highly charged ions in water Using resources at EMSL, scientists obtained...

315

Climatology of extratropical atmospheric wave packets in the northern hemisphere  

E-Print Network [OSTI]

Planetary and synoptic scale wave-packets represents one important component of the atmospheric large-scale circulation. These dissipative structures are able to rapidly transport eddy kinetic energy, generated locally (e.g. by baroclinic conversion), downstream along the upper tropospheric flow. The transported energy, moving faster than individual weather systems, will affect the development of the next meteorological system on the leading edge of the wave packet, creating a chain of connections between systems that can be far apart in time and space, with important implications on predictability. In this work we present a different and novel approach to investigate atmospheric variability, based on the objective recognition of planetary and synoptic wave packets. We have developed an objective tracking algorithm which allows to extract relevant statistical properties of the wave trains as a function of their dominant wavelength. We have applied the algorithm to the daily analysis (every 12h) from 1958-2009...

Grazzini, Federico

2010-01-01T23:59:59.000Z

316

Improved Meteorological Input for Atmospheric Release Decision support Systems and an Integrated LES Modeling System for Atmospheric Dispersion of Toxic Agents: Homeland Security Applications  

SciTech Connect (OSTI)

When hazardous material is accidently or intentionally released into the atmosphere, emergency response organizations look to decision support systems (DSSs) to translate contaminant information provided by atmospheric models into effective decisions to protect the public and emergency responders and to mitigate subsequent consequences. The Department of Homeland Security (DHS)-led Interagency Modeling and Atmospheric Assessment Center (IMAAC) is one of the primary DSSs utilized by emergency management organizations. IMAAC is responsible for providing 'a single piont for the coordination and dissemination of Federal dispersion modeling and hazard prediction products that represent the Federal position' during actual or potential incidents under the National Response Plan. The Department of Energy's (DOE) National Atmospheric Release Advisory Center (NARAC), locatec at the Lawrence Livermore National Laboratory (LLNL), serves as the primary operations center of the IMAAC. A key component of atmospheric release decision support systems is meteorological information - models and data of winds, turbulence, and other atmospheric boundary-layer parameters. The accuracy of contaminant predictions is strongly dependent on the quality of this information. Therefore, the effectiveness of DSSs can be enhanced by improving the meteorological options available to drive atmospheric transport and fate models. The overall goal of this project was to develop and evaluate new meteorological modeling capabilities for DSSs based on the use of NASA Earth-science data sets in order to enhance the atmospheric-hazard information provided to emergency managers and responders. The final report describes the LLNL contributions to this multi-institutional effort. LLNL developed an approach to utilize NCAR meteorological predictions using NASA MODIS data for the New York City (NYC) region and demonstrated the potential impact of the use of different data sources and data parameterizations on IMAAC/NARAC fate and transport predictions. A case study involving coastal sea breeze circulation patterns in the NYC region was used to investigate the sensitivity of atmospheric dispersion results on the source of three-dimensional wind field data.

Arnold, E; Simpson, M; Larsen, S; Gash, J; Aluzzi, F; Lundquist, J; Sugiyama, G

2010-04-26T23:59:59.000Z

317

Calculation of material properties and ray tracing in transformation media  

E-Print Network [OSTI]

Complex and interesting electromagnetic behavior can be found in spaces with non-flat topology. When considering the properties of an electromagnetic medium under an arbitrary coordinate transformation an alternative interpretation presents itself. The transformed material property tensors may be interpreted as a different set of material properties in a flat, Cartesian space. We describe the calculation of these material properties for coordinate transformations that describe spaces with spherical or cylindrical holes in them. The resulting material properties can then implement invisibility cloaks in flat space. We also describe a method for performing geometric ray tracing in these materials which are both inhomogeneous and anisotropic in their electric permittivity and magnetic permeability.

Schurig, D; Smith, D R

2006-01-01T23:59:59.000Z

318

Pacific Northwest Laboratory annual report for 1984 to the DOE Office of Energy Research. Part 3. Atmospheric sciences  

SciTech Connect (OSTI)

The goals of atmospheric research at Pacific Northwest Laboratory (PNL) are to assess, describe, and predict the nature and fate of atmospheric contaminants and to study the impacts of contaminants on local, regional, and global climates. The contaminants being investigated are those resulting from the development and use of conventional resources (coal, gas, oil, and nuclear power) as well as alternative energy sources. The description of the research is organized into 3 sections: (1) Atmospheric Studies in Complex Terrain (ASCOT); (2) Boundary Layer Meteorology; and (3) Dispersion, Deposition, and Resuspension of Atmospheric Contaminants. Separate analytics have been done for each of the sections and are indexed and contained in the EDB. (MDF)

Elderkin, C.E.

1985-02-01T23:59:59.000Z

319

Some challenges of middle atmosphere data assimilation  

E-Print Network [OSTI]

Some challenges of middle atmosphere data assimilation 1234567 89A64BC7DEF72B4 8629EEC7C72DEEE5.1256/qj.05.87 Some challenges of middle atmosphere data assimilation By S. POLAVARAPU1,2, T. G. SHEPHERD2 Data assimilation is employed at operational weather forecast centres to combine measurements and model

Wirosoetisno, Djoko

320

OCEAN-ATMOSPHERE INTERACTION AND TROPICAL CLIMATE  

E-Print Network [OSTI]

radiation is the ultimate source of energy for motions in the atmosphere and ocean. Most absorption of solar radiation takes place on the Earth surface, the majority of which is occupied by oceans. Thus oceanic modulate surface radiative flux. Thus, the ocean and atmosphere are a coupled system and their interaction

Xie, Shang-Ping

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


321

Doctoral Programs Atmospheric, Oceanic & Space Sciences  

E-Print Network [OSTI]

University of Michigan Space Research Building 2455 Hayward Street Ann Arbor, MI 48109-2143 aoss Katherine E. White, Ann Arbor ©The Regents of the University of Michigan Research areas Atmospheric Science Atmospheric Dynamics Climate, Climate Modeling & Climate Change Clouds & Precipitation Paleoclimate, Ice

Eustice, Ryan

322

United States Department Atmospheric and Biospheric Interactions  

E-Print Network [OSTI]

United States Department Atmospheric and Biospheric Interactions of Agriculture Forest Service coordinator. 1997. Atmospheric and biospheric interactions of gases and energy in the Pacific region century have caused a dramatic increase in global air pollution. This process has accelerated in the past

Standiford, Richard B.

323

Atmospheric Chemistry, Modeling, and Biogeochemistry of Mercury  

E-Print Network [OSTI]

Atmospheric Chemistry, Modeling, and Biogeochemistry of Mercury Noelle Eckley Selin *Reprinted from Mercury in the Environment: Pattern and Process (Chapter 5) pp. 73-80 Copyright © 2012 with kind, and Biogeochemistry of Mercury NOELLE ECKLEY SELIN and their distribution in the atmosphere. This includes

324

Extremes and Atmospheric Data Eric Gilleland  

E-Print Network [OSTI]

Extremes and Atmospheric Data Eric Gilleland Research Applications Laboratory National Center for Atmospheric Research 2007-08 Program on Risk Analysis, Extreme Events and Decision Theory, opening workshop 16-19 September, North Carolina #12;Extremes · Interest in making inferences about large, rare, extreme phenomena

Gilleland, Eric

325

Atmospheric sampling glow discharge ionization source  

DOE Patents [OSTI]

An atmospheric sampling glow discharge ionization source that can be used in combination with an analytical instrument which operates at high vacuum, such as a mass spectrometer. The atmospheric sampling glow discharge ionization source comprises a chamber with at least one pair of electrodes disposed therein, an inlet for a gaseous sample to be analyzed and an outlet communicating with an analyzer which operates at subatmospheric pressure. The ionization chamber is maintained at a pressure below atmospheric pressure, and a voltage difference is applied across the electrodes to induce a glow discharge between the electrodes, so that molecules passing through the inlet are ionized by the glow discharge and directed into the analyzer. The ionization source accepts the sample under atmospheric pressure conditions and processes it directly into the high vacuum instrument, bridging the pressure gap and drawing off unwanted atmospheric gases. The invention also includes a method for analyzing a gaseous sample using the glow discharge ionization source described above. 3 figs.

McLuckey, S.A.; Glish, G.L.

1989-07-18T23:59:59.000Z

326

A Comparison of Atmospheric Reanalysis Products for the Arctic Ocean and Implications for Uncertainties in Air–Sea Fluxes  

E-Print Network [OSTI]

The uncertainties related to atmospheric fields in the Arctic Ocean from commonly used and recently available reanalysis products are investigated. Fields from the 1) ECMWF Interim Re-Analysis (ERA-Interim), 2) Common ...

Chaudhuri, Ayan H.

327

A Comparison of Atmospheric Reanalysis Surface Products over the Ocean and Implications for Uncertainties in Air–Sea Boundary Forcing  

E-Print Network [OSTI]

This paper investigates the uncertainties related to atmospheric fields from reanalysis products used in forcing ocean models. Four reanalysis products, namely from 1) the interim ECMWF Re-Analysis (ERA-Interim), 2) version ...

Chaudhuri, Ayan H.

328

Chapter 9.1: Department of Atmospheric Science1 The Department of Atmospheric Science was founded in 1962 within the College of Engineering as  

E-Print Network [OSTI]

in first place among departments of atmosphere and ocean sciences in the nation. Strategic Planning Areas, or full professor levels) in atmospheric dynamics, climate dynamics, atmospheric radiation, atmospheric

329

Local trace formulae for commuting Hamiltonians in Töplitz quantization  

E-Print Network [OSTI]

Let $(M,J,\\omega)$ be a quantizable compact K\\"ahler manifold, with quantizing Hermitian line bundle $(A,h)$, and associated Hardy space $H(X)$, where $X$ is the unit circle bundle. Given a collection of $r$ Poisson commuting quantizable Hamiltonian functions $f_j$ on $M$, there is an induced Abelian unitary action on $H(X)$, generated by certain T\\"oplitz operators naturally induced by the $f_j$'s. As a multi-dimensional analogue of the usual Weyl law and trace formula, we consider the problem of describing the asymptotic clustering of the joint eigenvalues of these T\\"oplitz operators along a given ray, and locally on $M$ the asymptotic concentration of the corresponding joint eigenfunctions. This problem naturally leads to a \\lq directional local trace formula\\rq, involving scaling asymptotics in the neighborhood of certain special loci in $M$. Under natural transversality assumption, we obtain asymptotic expansions related to the local geometry of the Hamiltonian action and flow.

Roberto Paoletti

2015-01-10T23:59:59.000Z

330

TRACE/PARCS modelling of rips trip transients for Lungmen ABWR  

SciTech Connect (OSTI)

The objectives of this study are to examine the performances of the steady-state results calculated by the Lungmen TRACE/PARCS model compared to SIMULATE-3 code, as well as to use the analytical results of the final safety analysis report (FSAR) to benchmark the Lungmen TRACE/PARCS model. In this study, three power generation methods in TRACE were utilized to analyze the three reactor internal pumps (RIPs) trip transient for the purpose of validating the TRACE/PARCS model. In general, the comparisons show that the transient responses of key system parameters agree well with the FSAR results, including core power, core inlet flow, reactivity, etc. Further studies will be performed in the future using Lungmen TRACE/PARCS model. After the commercial operation of Lungmen nuclear power plant, TRACE/PARCS model will be verified. (authors)

Chang, C. Y. [Inst. of Nuclear Engineering and Science, National Tsing-Hua Univ., No.101, Kuang-Fu Road, Hsinchu 30013, Taiwan (China); Lin, H. T.; Wang, J. R. [Inst. of Nuclear Energy Research, No. 1000, Wenhua Rd., Longtan Township, Taoyuan County 32546, Taiwan (China); Shih, C. [Inst. of Nuclear Engineering and Science, Dept. of Engineering and System Science, National Tsing-Hua Univ., No.101, Kuang-Fu Road, Hsinchu 30013, Taiwan (China)

2012-07-01T23:59:59.000Z

331

Corrective Action Decision Document/Corrective Action Plan for Corrective Action Unit 104: Area 7 Yucca Flat Atmospheric Test Sites Nevada National Security Site, Nevada, Revision 0  

SciTech Connect (OSTI)

CAU 104 comprises the following corrective action sites (CASs): • 07-23-03, Atmospheric Test Site T-7C • 07-23-04, Atmospheric Test Site T7-1 • 07-23-05, Atmospheric Test Site • 07-23-06, Atmospheric Test Site T7-5a • 07-23-07, Atmospheric Test Site - Dog (T-S) • 07-23-08, Atmospheric Test Site - Baker (T-S) • 07-23-09, Atmospheric Test Site - Charlie (T-S) • 07-23-10, Atmospheric Test Site - Dixie • 07-23-11, Atmospheric Test Site - Dixie • 07-23-12, Atmospheric Test Site - Charlie (Bus) • 07-23-13, Atmospheric Test Site - Baker (Buster) • 07-23-14, Atmospheric Test Site - Ruth • 07-23-15, Atmospheric Test Site T7-4 • 07-23-16, Atmospheric Test Site B7-b • 07-23-17, Atmospheric Test Site - Climax These 15 CASs include releases from 30 atmospheric tests conducted in the approximately 1 square mile of CAU 104. Because releases associated with the CASs included in this CAU overlap and are not separate and distinguishable, these CASs are addressed jointly at the CAU level. The purpose of this CADD/CAP is to evaluate potential corrective action alternatives (CAAs), provide the rationale for the selection of recommended CAAs, and provide the plan for implementation of the recommended CAA for CAU 104. Corrective action investigation (CAI) activities were performed from October 4, 2011, through May 3, 2012, as set forth in the CAU 104 Corrective Action Investigation Plan.

Patrick Matthews

2012-10-01T23:59:59.000Z

332

TRACING THE CONTAMINANT HISTORY OF AN URBAN WATERSHED THROUGH AN EXAMINATION OF AQUATIC  

E-Print Network [OSTI]

TRACING THE CONTAMINANT HISTORY OF AN URBAN WATERSHED THROUGH AN EXAMINATION OF AQUATIC SEDIMENTS. A smaller organic contaminant database indicates sediment PAH levels exceed probable effect level criteria

333

E-Print Network 3.0 - anthropogenic trace metal Sample Search...  

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

Sciences and Ecology 3 Chapter 1: Modelling Past Environmental Changes Using Lake Sediment Records Summary: of the anthropogenic fluxes of many potentially toxic trace metals...

334

E-Print Network 3.0 - anterograde tracing study Sample Search...  

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

Biology and Medicine 27 Perirhinal and Postrhinal Cortices of the Rat: Interconnectivity and Summary: ., 1983). Subsequent histochemical and tract tracing studies,...

335

E-Print Network 3.0 - airborne trace element Sample Search Results  

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

Search Sample search results for: airborne trace element Page: << < 1 2 3 4 5 > >> 1 AIR-DEPOSITED POLLUTION IN THE ANACOSTIA RIVER WATERSHED Summary: pollution in Lake...

336

Coherent Multiresolution Isosurface Ray Tracing Aaron Knoll, Charles Hansen, and Ingo Wald  

E-Print Network [OSTI]

Scientific Computing and Imaging Institute University of Utah Salt Lake City, Utah 84112 Email: {knolla1 Coherent Multiresolution Isosurface Ray Tracing Aaron Knoll, Charles Hansen, and Ingo Wald

Wald, Ingo

337

On the effects of atmospheric refraction on radar ground patterns  

E-Print Network [OSTI]

of superrefraction. A radial pattern of AP echoes occurred in a number of cases when there was a strong gradient of N in an elevated refractive layer, but this pattern was not nearly as common as others. Investigations [10, 13, 14, 15, 16] of the atmosphere... when the antenna elevation angle is less than 2 deg and when there is an elevated refracting layer between 1500 ft and 3000 ft above the radar in which the gradient of refractivity is greater than 48N/1000 ft. ACKNONLEDGMENT The author wishes...

Cobb, Lalovee Glendale

1963-01-01T23:59:59.000Z

338

Energy balance of the atmosphere over the Gulf of Mexico  

E-Print Network [OSTI]

d'or Sub jest: Neteorolo~~ ENERGY HA~SHOE OF THE ATMOSP:ARK 07ER THE GULF OF MEXICO A Thesis HATHAB MOHRIS REISS Approvecl s. s to style encl content by: (Chai. oi' Committee) (Head of Departmen ember) , Member ) May 197O ABSTRACT ENERGY...Iexico for the period. 1 June 1962 through 31 May 1966 were used to investigate the atmospheric energy budget in the area of the Gulf of Mexico, as well as the field of' large-scale vertical motion. Mean monthly values for the divergence of the norizontal mass flux...

Reiss, Nathan Morris

2012-06-07T23:59:59.000Z

339

Star-planet magnetic interaction and evaporation of planetary atmospheres  

E-Print Network [OSTI]

Stars interact with their close-in planets through radiation, gravitation, and magnetic fields. We investigate the energy input to a planetary atmosphere by reconnection between stellar and planetary magnetic fields and compare it to the energy input of the extreme ultraviolet (EUV) radiation field of the star. We quantify the power released by magnetic reconnection at the boundary of the planetary magnetosphere that is conveyed to the atmosphere by accelerated electrons. We introduce simple models to evaluate the energy spectrum of the accelerated electrons and the energy dissipated in the atmospheric layers in the polar regions of the planet upon which they impinge. A simple transonic isothermal wind flow along field lines is considered to estimate the increase in mass loss rate in comparison with a planet irradiated only by the EUV flux of its host star. We find that energetic electrons can reach levels down to column densities of 10^{23}-10^{25} m^{-2}, comparable with or deeper than EUV photons, and incr...

Lanza, A F

2013-01-01T23:59:59.000Z

340

Space Science: Atmospheres Evolution of planets  

E-Print Network [OSTI]

;Atmospheres / Evolution Heat Sources Compressional Energy Trapped Radioactive Material Tidal Interactions, same A) the surface temperature,Tg, increases. WOW! Simple #12;Temperature vs. time in an Early Epoch

Johnson, Robert E.

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


341

The porous atmosphere of eta Carinae  

E-Print Network [OSTI]

We analyze the wind generated by the great 20 year long super-Eddington outburst of eta-Carinae. We show that using classical stellar atmospheres and winds theory, it is impossible to construct a consistent wind model in which a sufficiently small amount of mass, like the one observed, is shed. One expects the super-Eddington luminosity to drive a thick wind with a mass loss rate substantially higher than the observed one. The easiest way to resolve the inconsistency is if we alleviate the implicit notion that atmospheres are homogeneous. An inhomogeneous atmosphere, or "porous", allows more radiation to escape while exerting a smaller average force. Consequently, such an atmosphere yields a considerably lower mass loss rate for the same total luminosity. Moreover, all the applications of the Eddington Luminosity as a strict luminosity limit should be revised, or at least reanalyzed carefully.

Nir J. Shaviv

2000-02-09T23:59:59.000Z

342

HYPERsensarium : an archive of atmospheric conditions  

E-Print Network [OSTI]

HYPERsensarium proposes a tangible interface of atmospheres for public experience through an archive of historical and projected weathers. While architecture's purpose has long been to act as the technical boundary between ...

Shaw, Kelly E. (Kelly Evelyn)

2013-01-01T23:59:59.000Z

343

Adaptive control for Mars atmospheric flight  

E-Print Network [OSTI]

landing accuracy requirements for a manned space vehicle make it necessary to ?y a controlled entry trajectory rather than a more robust ballistic entry trajectory used for some robotic missions. The large variations in Mars atmospheric properties make a...

Restrepo, Carolina Isabel

2009-05-15T23:59:59.000Z

344

Standoff ultraviolet raman scattering detection of trace levels of explosives.  

SciTech Connect (OSTI)

Ultraviolet (UV) Raman scattering with a 244-nm laser is evaluated for standoff detection of explosive compounds. The measured Raman scattering albedo is incorporated into a performance model that focused on standoff detection of trace levels of explosives. This model shows that detection at {approx}100 m would likely require tens of seconds, discouraging application at such ranges, and prohibiting search-mode detection, while leaving open the possibility of short-range point-and-stare detection. UV Raman spectra are also acquired for a number of anticipated background surfaces: tile, concrete, aluminum, cloth, and two different car paints (black and silver). While these spectra contained features in the same spectral range as those for TNT, we do not observe any spectra similar to that of TNT.

Kulp, Thomas J.; Bisson, Scott E.; Reichardt, Thomas A.

2011-10-01T23:59:59.000Z

345

Atomic Force and Scanning Electron Microscopy of Atmospheric Particles  

E-Print Network [OSTI]

conducted so as to characterize atmospheric aerosols from anthropogenic (pollution) and natural (sea saltAtomic Force and Scanning Electron Microscopy of Atmospheric Particles ZAHAVA BARKAY,1 * AMIT 69978, Israel KEY WORDS atmospheric aerosols; atomic force microscopy; scanning electron microscopy

Shapira, Yoram

346

Adjoint modeling for atmospheric pollution process sensitivity at regional scale  

E-Print Network [OSTI]

Adjoint modeling for atmospheric pollution process sensitivity at regional scale Laurent Menut; 0345 Atmospheric Composition and Structure: Pollution--urban and regional (0305); 3210 Mathematical: atmospheric pollution, tropospheric ozone, urban pollution peaks, adjoint modeling, sensitivity Citation

Menut, Laurent

347

Trace gas measurements in the Kuwait oil fire smoke plume  

SciTech Connect (OSTI)

The authors report trace gas measurements made both inside and outside the Kuwait oil-fire smoke plume during a flight of an instrumented research aircraft on May 30, 1991. Concentrations of SO{sub 2}, CO, and NO{sub x} averaged vertically and horizontally throughout the plume 80 km downwind of Kuwait City were 106, 127, and 9.1 parts per billion by volume (ppbv), respectively, above background concentrations. With the exception of SO{sub 2}, trace gas concentrations were far below typical US urban levels and primary national ambient air quality standards. Ambient ozone was titrated by NO in the dark, dense core of the smoke plume close to the fires, and photochemical ozone production was limited to the diffuse edge of the plume. Photochemical O{sub 3} production was noted throughout the plume at a distance of 160 km downwind of Kuwait City, and averaged 2.3 ppbv per hour during the first 3 hours of transport. Little additional photochemical production was noted at a downwind range of 340 km. The fluxes of sulfur dioxide, carbon monoxide, and reactive nitrogen from the roughly 520 fires still burning on May 30, 1991 are estimated at 1.4 x 10{sup 7} kg SO{sub 2}/d, 6.9 x 10{sup 6} kg CO/d, and 2.7 x 10{sup 5} kg N/d, respectively. Generally low concentrations of CO and NO{sub x} indicate that the combustion was efficient and occurred at low temperatures. Low total nonmethane hydrocarbon concentrations suggest that the volatile components of the petroleum were burned efficiently. 37 refs., 4 figs., 4 tabs.

Luke, W.T.; Kok, G.L.; Schillawski, R.D.; Zimmerman, P.R.; Greenberg, J.P.; Kadavanich, M. [National Center for Atmospheric Research, Boulder, CO (United States)

1992-09-20T23:59:59.000Z

348

Ultrasensitive Voltammetric Detection of Trace Heavy Metal Ions Using  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear SecurityTensile Strain Switched Ferromagnetism in Layeredof2014 EIAUltrafast TransformationsCarbon Nanotube

349

Air Activation Following an Atmospheric Explosion  

SciTech Connect (OSTI)

In addition to thermal radiation and fission products, nuclear explosions result in a very high flux of unfissioned neutrons. Within an atmospheric nuclear explosion, these neutrons can activate the various elemental components of natural air, potentially adding to the radioactive signature of the event as a whole. The goal of this work is to make an order-of-magnitude estimate of the total amount of air activation products that can result from an atmospheric nuclear explosion.

Lowrey, Justin D.; McIntyre, Justin I.; Prichard, Andrew W.; Gesh, Christopher J.

2013-03-13T23:59:59.000Z

350

Atmospheric State, Cloud Microphysics and Radiative Flux  

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

Atmospheric thermodynamics, cloud properties, radiative fluxes and radiative heating rates for the ARM Southern Great Plains (SGP) site. The data represent a characterization of the physical state of the atmospheric column compiled on a five-minute temporal and 90m vertical grid. Sources for this information include raw measurements, cloud property and radiative retrievals, retrievals and derived variables from other third-party sources, and radiative calculations using the derived quantities.

Mace, Gerald

351

Investigation of HCCI Combustion of Diethyl Ether and Ethanol Mixtures Using Carbon 14 Tracing and Numerical Simulations  

E-Print Network [OSTI]

Ryan III, and J.S. Souder, "HCCI Operation of a Dual-FuelJ. Girard, and R. Dibble, "HCCI in a CFR Engine: Experimentsthe DOE University HCCI Program, and LLNL Laboratory

Mack, John Hunter; Flowers, Daniel L.; Buchholz, Bruce A.; Dibble, Robert W

2004-01-01T23:59:59.000Z

352

A Comprehensive Bench-and Pilot-Scale Investigation of Trace Or-ganic Compound Rejection by Forward Osmosis  

E-Print Network [OSTI]

sea- water desalination, multi-barrier protection of drinking water, reduction in reverse osmosis seawater on the way to a seawater reverse osmosis pro- cess. The rejection of wastewater constituents by Forward Osmosis SUPPORTING INFORMATION Nathan T. Hancock1 , Pei Xu1 , Dean M. Heil1 , Christopher Bellona2

353

Comparative Analysis of Urban Atmospheric Aerosol by Particle...  

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

Analysis of Urban Atmospheric Aerosol by Particle-Induced X-ray Emission (PIXE), Proton Elastic Scattering Analysis Comparative Analysis of Urban Atmospheric Aerosol by...

354

atmospheric dispersion coefficient: Topics by E-print Network  

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

the earth surface. In general, the atmospheric motion is driven by the intense solar energy arriving at the equator 3 A GIS-based atmospheric dispersion model Computer...

355

atmospheric dispersion calculations: Topics by E-print Network  

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

the earth surface. In general, the atmospheric motion is driven by the intense solar energy arriving at the equator 4 A GIS-based atmospheric dispersion model Computer...

356

atmospheric dispersion experiment: Topics by E-print Network  

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

the earth surface. In general, the atmospheric motion is driven by the intense solar energy arriving at the equator 2 A GIS-based atmospheric dispersion model Computer...

357

atmospheric ion measurements: Topics by E-print Network  

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

the Atmospheric CERN Preprints Summary: We report the first observation in a high energy neutrino telescope of cascades induced by atmospheric electron neutrinos and by...

358

Atmospheric Solids Analysis Probe Mass Spectrometry: A New Approach...  

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

Atmospheric Solids Analysis Probe Mass Spectrometry: A New Approach for Airborne Particle Analysis. Atmospheric Solids Analysis Probe Mass Spectrometry: A New Approach for Airborne...

359

Fehner and Gosling, Atmospheric Nuclear Weapons Testing, 1951...  

Energy Savers [EERE]

Atmospheric Nuclear Weapons Testing, 1951-1963. Battlefield of the Cold War: The Nevada Test Site, Volume I Fehner and Gosling, Atmospheric Nuclear Weapons Testing, 1951-1963....

360

An Infrared Spectral Library for Atmospheric Environmental Monitoring...  

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

Library for Atmospheric Environmental Monitoring. An Infrared Spectral Library for Atmospheric Environmental Monitoring. Abstract: Infrared (IR) spectroscopy is one of several...

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


361

atmospheric pressure ionization: Topics by E-print Network  

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

for Atmospheric Pressure, in Vivo, and Imaging Mass. For example, atmospheric pressure infrared MALDI (AP IR-MALDI), capable of producing ions from small ionization (DESI),5...

362

Oxygen detected in atmosphere of Saturn's moon Dione  

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

Oxygen detected in atmosphere of Saturn's moon Dione Oxygen detected in atmosphere of Saturn's moon Dione Scientists and an international research team have announced discovery of...

363

A Volcanologist'S Review Of Atmospheric Hazards Of Volcanic Activity...  

Open Energy Info (EERE)

atmospheric hazards caused by explosive volcanic activity. The hazard posed by fine silicate ash with long residence time in the atmosphere is probably much less serious than...

364

atmospheric co2 content: Topics by E-print Network  

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

Of Physics Version 4 Gerlich and Ralf D. Tscheuschner Abstract The atmospheric greenhouse effect, an idea that many authors Of The Atmospheric CO2 Greenhouse Effects . . . 3...

365

atmospheric sciences exposure: Topics by E-print Network  

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

annual reviews of faculty performance in accordance 8 Space Science : Atmosphere Greenhouse Effect Physics Websites Summary: Space Science : Atmosphere Greenhouse Effect Part-5a...

366

atmospheric co2 concentrations: Topics by E-print Network  

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

Of Physics Version 4 Gerlich and Ralf D. Tscheuschner Abstract The atmospheric greenhouse effect, an idea that many authors Of The Atmospheric CO2 Greenhouse Effects . . . 3...

367

atmospheric co2 concentration: Topics by E-print Network  

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

Of Physics Version 4 Gerlich and Ralf D. Tscheuschner Abstract The atmospheric greenhouse effect, an idea that many authors Of The Atmospheric CO2 Greenhouse Effects . . . 3...

368

atmospheric loading effects: Topics by E-print Network  

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

large solar proton Paris-Sud XI, Universit de 7 Space Science : Atmosphere Greenhouse Effect Physics Websites Summary: Space Science : Atmosphere Greenhouse Effect Part-5a...

369

atmospheric co2 measurements: Topics by E-print Network  

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

Of Physics Version 4 Gerlich and Ralf D. Tscheuschner Abstract The atmospheric greenhouse effect, an idea that many authors Of The Atmospheric CO2 Greenhouse Effects . . . 3...

370

atmospheric co2 variations: Topics by E-print Network  

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

Of Physics Version 4 Gerlich and Ralf D. Tscheuschner Abstract The atmospheric greenhouse effect, an idea that many authors Of The Atmospheric CO2 Greenhouse Effects . . . 3...

371

atmospheric sciences: Topics by E-print Network  

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

annual reviews of faculty performance in accordance 8 Space Science : Atmosphere Greenhouse Effect Physics Websites Summary: Space Science : Atmosphere Greenhouse Effect Part-5a...

372

atmospheric co2 mixing: Topics by E-print Network  

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

Of Physics Version 4 Gerlich and Ralf D. Tscheuschner Abstract The atmospheric greenhouse effect, an idea that many authors Of The Atmospheric CO2 Greenhouse Effects . . . 3...

373

atmospheric aerosols basic: Topics by E-print Network  

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

of atmospheric aerosol. Aplin, KL 2012-01-01 13 1. Introduction The atmospheric greenhouse effect is the basic mechanism Environmental Sciences and Ecology Websites Summary: 1....

374

Appendix HYDRO: Hydrological Investigations  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth (AOD)ProductssondeadjustsondeadjustAbout theOFFICEAmes LaboratoryAntonyaAppeals4 STANDARD TERMSE

375

Abstract ID 616 MC-TRACE: MULTICASTING THROUGH TIME RESERVATION USING ADAPTIVE CONTROL  

E-Print Network [OSTI]

Abstract ID 616 1 of 7 MC-TRACE: MULTICASTING THROUGH TIME RESERVATION USING ADAPTIVE CONTROL, University of Rochester, Rochester NY Abstract- In this paper, we present Multicasting through Time Reservation using Adaptive Control for Energy efficiency (MC-TRACE), which is an energy-efficient voice

Heinzelman, Wendi

376

The Measurement of Trace Emissions and Combustion Characteristics for a Mass Fire  

E-Print Network [OSTI]

32 The Measurement of Trace Emissions and Combustion Characteristics for a Mass Fire Ronald A of emissions from biomass burning on global climate. While the burning of biomass constitutes a large fraction of world emis- sions, there are insufficient data on the combustion efficiency, emission factors, and trace

377

Trace metal behaviour in riverine sediments: role of organic matter and sulphides Adeline Charriaua  

E-Print Network [OSTI]

1 Trace metal behaviour in riverine sediments: role of organic matter and sulphides Authors Adeline : 10.1016/j.apgeochem.2010.11.005 #12;2 Abstract Three sediment cores were collected in the Scheldt. The speciation and the distribution of trace metals in pore waters and sediment particles were assessed through

Paris-Sud XI, Université de

378

Solar Energy 74 (2003) 157173 Comparison between ray-tracing simulations and bi-directional  

E-Print Network [OSTI]

Solar Energy 74 (2003) 157­173 Comparison between ray-tracing simulations and bi-Louis Scartezzini a Solar Energy and Building Physics Laboratory LESO-PB, Swiss Federal Institute of Technology EPFL-tracing software. For the first time, an attempt is made to validate detailed bi-directional properties

379

SPAM: A Microcode Based Tool for Tracing Operating System Events Stephen W. Melvin  

E-Print Network [OSTI]

modifications to a VAX 8600, that traces operating system events as a sideeffect to normal execution. This trace System Performance Analysis using Microcode). It is based on microcode modifications to a VAX 8600 which instruction counts, microsecond counts, processor mode and process and user IDS. Because the VAX architecture

Patt, Yale

380

Analysis of inhomogeneous optical systems by the use of ray tracing. I. Planar systems  

E-Print Network [OSTI]

, such as optical fiber profiling,1­5 diagnostics of planar waveguides,6,7 plasma diagnostics, and analysis of nondestructive diagnostics of asymmetric objects, which is based on observation of the traces of thin coplanar methods described below. Ray-tracing analysis has been applied to nonde- structive diagnostics of planar

Chan, Derek Y C

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


381

An Attack on a Trace-Zero Cryptosystem Claus Diem and Jasper Scholten  

E-Print Network [OSTI]

An Attack on a Trace-Zero Cryptosystem Claus Diem and Jasper Scholten Institut f¨ur Experimentelle a novel attack on this primitive. We show that the DLP in the trace-zero group can always be transferred methods than by attacking it directly via generic methods. The speed-up one obtains corresponds

Diem, Claus

382

An Attack on a TraceZero Cryptosystem Claus Diem and Jasper Scholten  

E-Print Network [OSTI]

An Attack on a Trace­Zero Cryptosystem Claus Diem and Jasper Scholten Institut fË?ur Experimentelle a novel attack on this primitive. We show that the DLP in the trace­zero group can always be transferred methods than by attacking it directly via generic methods. The speed­up one obtains corresponds

Diem, Claus

383

White-light flares: A TRACE/RHESSI overview H. S. Hudson  

E-Print Network [OSTI]

White-light flares: A TRACE/RHESSI overview H. S. Hudson Space Sciences Laboratory, University includes a "white light" imaging capability with novel characteristics. Many flares with such white. The spectral response of the TRACE white-light passband extends into the UV, so these data capture

Hudson, Hugh

384

Detecting Climate Change in Multivariate Time Series Data by Novel Clustering and Cluster Tracing Techniques  

E-Print Network [OSTI]

Detecting Climate Change in Multivariate Time Series Data by Novel Clustering and Cluster Tracing Aachen University, Germany {kremer, guennemann, seidl}@cs.rwth-aachen.de Abstract--Climate change can series, and trace the clusters over time. A climate pattern is categorized as a changing pattern

385

Gas Source Tracing With a Mobile Robot Using an Adapted Moth Strategy  

E-Print Network [OSTI]

Gas Source Tracing With a Mobile Robot Using an Adapted Moth Strategy Achim Lilienthal, Denis,reiman,zell}@informatik.uni-tuebingen.de Abstract. As a sub-task of the general gas source localisation problem, gas source tracing is supposed to guide a gas-sensitive mobile system towards a source by using the cues determined from the gas

Zell, Andreas

386

Coherent Multiresolution Isosurface Ray Tracing Aaron Knoll, Charles Hansen and Ingo Wald  

E-Print Network [OSTI]

-2007-001 Scientific Computing and Imaging Institute University of Utah Salt Lake City, UT 84112 USA1 Coherent Multiresolution Isosurface Ray Tracing Aaron Knoll, Charles Hansen and Ingo Wald UUSCI. Technical Report No UUSCI-2007-001 Coherent Multiresolution Isosurface Ray Tracing Aaron Knoll Charles

Utah, University of

387

THE BEST SOBOLEV TRACE CONSTANT IN DOMAINS WITH HOLES FOR CRITICAL OR SUBCRITICAL EXPONENTS  

E-Print Network [OSTI]

THE BEST SOBOLEV TRACE CONSTANT IN DOMAINS WITH HOLES FOR CRITICAL OR SUBCRITICAL EXPONENTS JULI in the Sobolev trace embedding H1() Lq() in a bounded smooth domain for critical or subcritical q, that is 1 embedding H1 () Lq () for critical or subcritical exponents, 1

Rossi, Julio D.

388

Frequent Pattern Mining for Kernel Trace Data Christopher LaRosa, Li Xiong, Ken Mandelberg  

E-Print Network [OSTI]

, application programmers, operating systems engineers, and security analysts. In the systems area, data miningFrequent Pattern Mining for Kernel Trace Data Christopher LaRosa, Li Xiong, Ken Mandelberg patterns and other recurring runtime execution patterns in operating system trace logs, we employ data

Xiong, Li

389

Elevated Trace Element Concentrations in Southern Toads, Bufo terrestris, Exposed to Coal Combustion Waste  

E-Print Network [OSTI]

Elevated Trace Element Concentrations in Southern Toads, Bufo terrestris, Exposed to Coal, and behavioral abnormalities in amphibians to coal combustion wastes (coal ash). Few studies, however, have determined trace element concentrations in amphibians exposed to coal ash. In the current study we compare

Hopkins, William A.

390

Apparatus and method for atmospheric pressure reactive atom plasma processing for shaping of damage free surfaces  

DOE Patents [OSTI]

Fabrication apparatus and methods are disclosed for shaping and finishing difficult materials with no subsurface damage. The apparatus and methods use an atmospheric pressure mixed gas plasma discharge as a sub-aperture polisher of, for example, fused silica and single crystal silicon, silicon carbide and other materials. In one example, workpiece material is removed at the atomic level through reaction with fluorine atoms. In this example, these reactive species are produced by a noble gas plasma from trace constituent fluorocarbons or other fluorine containing gases added to the host argon matrix. The products of the reaction are gas phase compounds that flow from the surface of the workpiece, exposing fresh material to the etchant without condensation and redeposition on the newly created surface. The discharge provides a stable and predictable distribution of reactive species permitting the generation of a predetermined surface by translating the plasma across the workpiece along a calculated path.

Carr; Jeffrey W. (Livermore, CA)

2009-03-31T23:59:59.000Z

391

Scanning Transmission X-ray Microscopy: Applications in Atmospheric Aerosol Research  

SciTech Connect (OSTI)

Scanning transmission x-ray microscopy (STXM) combines x-ray microscopy and near edge x-ray absorption fine structure spectroscopy (NEXAFS). This combination provides spatially resolved bonding and oxidation state information. While there are reviews relevant to STXM/NEXAFS applications in other environmental fields (and magnetic materials) this chapter focuses on atmospheric aerosols. It provides an introduction to this technique in a manner approachable to non-experts. It begins with relevant background information on synchrotron radiation sources and a description of NEXAFS spectroscopy. The bulk of the chapter provides a survey of STXM/NEXAFS aerosol studies and is organized according to the type of aerosol investigated. The purpose is to illustrate the current range and recent growth of scientific investigations employing STXM-NEXAFS to probe atmospheric aerosol morphology, surface coatings, mixing states, and atmospheric processing.

Moffet, Ryan C.; Tivanski, Alexei V.; Gilles, Mary K.

2011-01-20T23:59:59.000Z

392

Investigating Extreme Ultraviolet Lithography Mask Defects  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsingFunInfrared LandResponses toInvestigating Extreme Ultraviolet Lithography Mask

393

Investigating Extreme Ultraviolet Lithography Mask Defects  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsingFunInfrared LandResponses toInvestigating Extreme Ultraviolet Lithography

394

Investigating Extreme Ultraviolet Lithography Mask Defects  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsingFunInfrared LandResponses toInvestigating Extreme Ultraviolet

395

An evaluation of trace element release associated with acid mine drainage  

SciTech Connect (OSTI)

The determination of trace element release from geologic materials, such as oil shale and coal overburden, is important for proper solid waste management planning. The objective of this study was to determine a correlation between release using the following methods: (1) sequential selective dissolution for determining trace element residencies, (2) toxicity characteristic leaching procedure (TCLP), and (3) humidity cell weathering study simulating maximum trace element release. Two eastern oil shales were used, a New Albany shale that contains 4.6 percent pyrite, and a Chattanooga shale that contains 1.5 percent pyrite. Each shale was analyzed for elemental concentrations by soluble, adsorbed, organic, carbonate, and sulfide phases. The results of the results of the selective dissolution studies show that each trace element has a unique distribution between the various phases. Thus, it is possible to predict trace element release based on trace element residency. The TCLP results show that this method is suitable for assessing soluble trace element release but does not realistically assess potential hazards. The results of the humidity cell studies do demonstrate a more reasonable method for predicting trace element release and potential water quality hazards. The humidity cell methods, however, require months to obtain the required data with a large number of analytical measurements. When the selective dissolution data are compared to the trace element concentrations in the TCLP and humidity cell leachates, it is shown that leachate concentrations are predicted by the selective dissolution data. Therefore, selective dissolution may represent a rapid method to assess trace element release associated with acid mine drainage.

Sullivan, P.J.; Yelton, J.L. (Univ. of Wyoming Research Corp., Laramie (United States))

1988-12-01T23:59:59.000Z

396

Atmospheric Radiation Measurement (ARM) Data Archive PRINCIPAL INVESTIGATOR: Raymond A. McCord  

E-Print Network [OSTI]

, a user interface and web server for data retrieval specification, and a mass storage system (automated to the permanent storage (mass storage system and backup copy). The database not only tracks the inventory

397

A numerical investigation of long waves in the atmosphere produced by flow over various mountain profiles  

E-Print Network [OSTI]

. The wavelengths range from 2000 to 7000 km. With sinusoidal initial streaulines, a study is made nf the ef- fect of a mountain ridge placed at different positions relative to the initial flow. This experiment demonstrates the blocking and splitting action... Upstream from the Trough of the Initial Streamlines. 45 16c. Case Xllc - Pattern of Vorticity after Three Days with the Mountain Placed at the Ridge of the Initial Streamlines. 17. Case XIII - Pattern of Positive Vorticity after Three Days. 48 LIST...

Collins, Ralph Warren

1968-01-01T23:59:59.000Z

398

An investigation of the diabatic wind profile in the atmospheric boundary layer  

E-Print Network [OSTI]

in the study; in particular, thanks are extended to Mr. B. Jesse Eckalkamp for his assistance, Mrs. Linda Alexander for typing the final copy, and Mrs. Maxine Pulaski for drafting the figures. The National Space and Aeronautics Administration must...; and the potential temperature at the surface, 8 . After M & 0, the scale 0 length is derived from these quantities by letting Ue be used in place of r /o and H/pc be used in the place of H. since 8 varies little 0 P in the layer concerned, it may be regarded as a...

O'Brien, James Joseph

1964-01-01T23:59:59.000Z

399

An investigation of the air flow structure over a rooftop in the turbulent atmospheric boundary layer  

E-Print Network [OSTI]

wind speed, the mean vertical wind speed, and the verticalA variation in the mean vertical wind speed was observed forpredominantly positive vertical wind speed, whereas the

Hayes, William Joseph

2010-01-01T23:59:59.000Z

400

An investigation of the atmospheric physical conditions associated with microwave propagation  

E-Print Network [OSTI]

of Dopartasat) Jsauary 1958 I 4 8 I t/0 C 5 I I 1 I'I u I' t ! I I I II III I The ?riter ?ishes to ackno?ledge the kind assistaace of all the nonhero of tbe gadar Meteorology Seccion of chs Depart?ant of Oceanography and Meteorology in tha... bees foesos4 saisly es ?bat e4ght bs tarss4 wsisgla ysth yroysgacios. " This ayyrosob ~- ylatsly fails is oossi4srstioa sf eoa4itioss else?hers Aas ia ths Lsse4iaco ares or is chs yath ower ?hiah the obserwscioss sro ?a4e. sloe siecle ro4iosos4s...

Riggs, Lowell Pogue

2012-06-07T23:59:59.000Z

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


401

Soil Biology & Biochemistry 40 (2008) 978985 Belowground nematode herbivores are resistant to elevated atmospheric  

E-Print Network [OSTI]

of Biology, Colorado State University, Fort Collins, CO 80523, USA c Department of Global Ecology, Carnegie of belowground grassland herbivores have rarely been investigated. Here, we report the response of a range are resistant to rising atmospheric CO2 concentrations. r 2007 Elsevier Ltd. All rights reserved. Keywords

Wall, Diana

402

Catalytic Adsorptive Stripping Determination of Trace Chromium (VI) at  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation Proposed New Substation Sites ProposedOccupational Health Services| AdvancedPortalBismuth

403

Catalytic Adsorptive Stripping Voltammetric Measurements of Trace Vanadium  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation Proposed New Substation Sites ProposedOccupational Health Services|

404

Monitoring Trace Radionuclides by ICP Mass Spectrometry with Femtosecond  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: VegetationEquipment SurfacesResource ProgramModification andinterface of water.OrganicNov 4 5 6Laser

405

The Effects of Trace Contaminants on Catalytic Processing of  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear SecurityTensile Strain Switched Ferromagnetism in Layered NbS2 and NbSe2Different Impacts ofDeposited

406

Inhibition of trace element release during Fe(II)-activated  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsingFunInfrared Land Surface Emissivity in the Vicinity ofTorecrystallization of Al-,

407

Solar Tracing Sensors for Maximum Solar Concentrator Efficiency - Energy  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administrationcontroller systemsBiSite CulturalDepartment ofatRenewable

408

ICHNOTAXONOMY AND PALEOENVIRONMENTAL ANALYSIS OF TRACE FOSSILS IN THE LATE DEVONIAN CATSKILL FORMATION, NORTH-CENTRAL PENNSYLVANIA, USA  

E-Print Network [OSTI]

traces represent terraphilic to hydrophilic soil biota. Traces in strata with no evidence of pedogenesis represent aquatic organism behavior. Backfilled burrows--Beaconites antarcticus and B. barretti--represent dwelling and feeding by soil...

Jones, Wade Tyler

2011-12-31T23:59:59.000Z

409

Modeling of a Busbased Disruption Tolerant Network Trace Xiaolan Zhang, Jim Kurose, Brian Levine, Don Towsley, Honggang Zhang  

E-Print Network [OSTI]

traces taken from UMass DieselNet, a Disruption­Tolerant Network consisting of WiFi nodes attached DTN, UMass DieselNet [6]. The model is generative in that it can be used to generate synthetic traces

Zhang, Xiaolan "Ellen"

410

Modeling of a Bus-based Disruption Tolerant Network Trace Xiaolan Zhang, Jim Kurose, Brian Levine, Don Towsley, Honggang Zhang  

E-Print Network [OSTI]

traces taken from UMass DieselNet, a Disruption-Tolerant Network consisting of WiFi nodes attached DTN, UMass DieselNet [6]. The model is generative in that it can be used to generate synthetic traces

Zhang, Xiaolan "Ellen"

411

Atmospheric chemistry impacts and feedbacks on the global carbon cycle  

E-Print Network [OSTI]

prediction. Issues to be addressed include the quantification of the impact of the atmospheric oxidation and the oxidative state of the atmosphere. The end goal is to create a model that can quantitatively predict is required to: Predict 3-D atmospheric CO2 production as a function of the CCSM3 atmospheric chemistry module

412

New nonlinear mechanisms of midlatitude atmospheric low-frequency variability  

E-Print Network [OSTI]

and Atmospheric Research Utrecht, Utrecht University, Princetonplein 5, 3584 CC Utrecht, The Netherlands Abstract

413

Atmospheric Pressure Plasma Process And Applications  

SciTech Connect (OSTI)

This paper provides a general discussion of atmospheric-pressure plasma generation, processes, and applications. There are two distinct categories of atmospheric-pressure plasmas: thermal and nonthermal. Thermal atmospheric-pressure plasmas include those produced in high intensity arcs, plasma torches, or in high intensity, high frequency discharges. Although nonthermal plasmas are at room temperatures, they are extremely effective in producing activated species, e.g., free radicals and excited state atoms. Thus, both thermal and nonthermal atmosphericpressure plasmas are finding applications in a wide variety of industrial processes, e.g. waste destruction, material recovery, extractive metallurgy, powder synthesis, and energy conversion. A brief discussion of recent plasma technology research and development activities at the Idaho National Laboratory is included.

Peter C. Kong; Myrtle

2006-09-01T23:59:59.000Z

414

Trace species detection: Spectroscopy and molecular energy transfer at high temperature  

SciTech Connect (OSTI)

Monitoring the concentration of trace species such as atomic and molecular free radicals is essential in forming predictive models of combustion processes. LIF-based techniques have the necessary sensitivity for concentration and temperature measurements but have limited accuracy due to collisional quenching in combustion applications. The goal of this program is to use spectroscopic and kinetic measurements to quantify nonradiative and collisional effects on LIF signals and to develop new background-free alternatives to LIF. The authors have measured the natural linewidth of several OH A-X (3,0) rotational transitions to determine predissociation lifetimes in the upper state, which were presumed to be short compared to quenching lifetimes, and as a result, quantitative predictions about the applicability of predissociation fluorescence methods at high pressures are made. The authors are investigating collisional energy transfer in the A-state of NO. Quenching rates which enable direct corrections to NO LIF quantum yields at high temperature were calculations. These quenching rates are now being used in studies of turbulence/chemistry interactions. The authors have measured the electric dipole moment {mu} of excited-state NO using Stark quantum-beat spectroscopy. {mu} is an essential input to a harpoon model which predicts quenching efficiencies for NO (A) by a variety of combustion-related species. The authors are developing new coherent multiphoton techniques for measurements of atomic hydrogen concentration in laboratory flames to avoid the quenching problems associated with previous multiphoton LIF schemes.

Gray, J.A. [Sandia National Laboratories, Livermore, CA (United States)

1993-12-01T23:59:59.000Z

415

Quantifying Climate Feedbacks from Abrupt Changes in High-Latitude Trace-Gas Emissions  

SciTech Connect (OSTI)

Our overall goal was to quantify the potential for threshold changes in natural emission rates of trace gases, particularly methane and carbon dioxide, from pan-arctic terrestrial systems under the spectrum of anthropogenically forced climate warming, and the extent to which these emissions provide a strong feedback mechanism to global climate warming. This goal is motivated under the premise that polar amplification of global climate warming will induce widespread thaw and degradation of the permafrost, and would thus cause substantial changes in the extent of wetlands and lakes, especially thermokarst (thaw) lakes, over the Arctic. Through a coordinated effort of field measurements, model development, and numerical experimentation with an integrated assessment model framework, we have investigated the following hypothesis: There exists a climate-warming threshold beyond which permafrost degradation becomes widespread and thus instigates strong and/or sharp increases in methane emissions (via thermokarst lakes and wetland expansion). These would outweigh any increased uptake of carbon (e.g. from peatlands) and would result in a strong, positive feedback to global climate warming.

Schlosser, Courtney Adam [MIT; Walter-Anthony, Katey [University of Alaska; Zhuang, Qianlai [Purdue University; Melillo, Jerry [Marine Biological Laboratory

2013-04-26T23:59:59.000Z

416

Homogeneous and Heterogeneous Reaction and Transformation of Hg and Trace Metals in Combustion Systems  

SciTech Connect (OSTI)

The overall goal of this project was to produce a working dynamic model to predict the transformation and partitioning of trace metals resulting from combustion of a broad range of fuels. The information provided from this model will be instrumental in efforts to identify fuels and conditions that can be varied to reduce metal emissions. Through the course of this project, it was determined that mercury (Hg) and arsenic (As) would be the focus of the experimental investigation. Experiments were therefore conducted to examine homogeneous and heterogeneous mercury oxidation pathways, and to assess potential interactions between arsenic and calcium. As described in this report, results indicated that the role of SO{sub 2} on Hg oxidation was complex and depended upon overall gas phase chemistry, that iron oxide (hematite) particles contributed directly to heterogeneous Hg oxidation, and that As-Ca interactions occurred through both gas-solid and within-char reaction pathways. Modeling based on this study indicated that, depending upon coal type and fly ash particle size, vaporization-condensation, vaporization-surface reaction, and As-CaO in-char reaction all play a role in arsenic transformations under combustion conditions.

J. Helble; Clara Smith; David Miller

2009-08-31T23:59:59.000Z

417

Combined Application of QEM-SEM and Hard X-ray Microscopy to Determine Mineralogical Associations and Chemcial Speciation of Trace Metals  

SciTech Connect (OSTI)

We describe the application of quantitative evaluation of mineralogy by scanning electron microscopy in combination with techniques commonly available at hard X-ray microprobes to define the mineralogical environment of a bauxite residue core segment with the more specific aim of determining the speciation of trace metals (e.g., Ti, V, Cr, and Mn) within the mineral matrix. Successful trace metal speciation in heterogeneous matrices, such as those encountered in soils or mineral residues, relies on a combination of techniques including spectroscopy, microscopy, diffraction, and wet chemical and physical experiments. Of substantial interest is the ability to define the mineralogy of a sample to infer redox behavior, pH buffering, and mineral-water interfaces that are likely to interact with trace metals through adsorption, coprecipitation, dissolution, or electron transfer reactions. Quantitative evaluation of mineralogy by scanning electron microscopy coupled with micro-focused X-ray diffraction, micro-X-ray fluorescence, and micro-X-ray absorption near edge structure (mXANES) spectroscopy provided detailed insights into the composition of mineral assemblages and their effect on trace metal speciation during this investigation. In the sample investigated, titanium occurs as poorly ordered ilmenite, as rutile, and is substituted in iron oxides. Manganese's spatial correlation to Ti is closely linked to ilmenite, where it appears to substitute for Fe and Ti in the ilmenite structure based on its mXANES signature. Vanadium is associated with ilmenite and goethite but always assumes the +4 oxidation state, whereas chromium is predominantly in the +3 oxidation state and solely associated with iron oxides (goethite and hematite) and appears to substitute for Fe in the goethite structure.

M Grafe; M Landers; R Tappero; P Austin; B Gan; A Grabsch; C Klauber

2011-12-31T23:59:59.000Z

418

Geochemical, metagenomic and metaproteomic insights into trace metal utilization by methane-oxidizing microbial consortia in sulfidic marine sediments  

SciTech Connect (OSTI)

Microbes have obligate requirements for trace metals in metalloenzymes that catalyze important biogeochemical reactions. In anoxic methane- and sulfide-rich environments, microbes may have unique adaptations for metal acquisition and utilization due to decreased bioavailability as a result of metal sulfide precipitation. However, micronutrient cycling is largely unexplored in cold ( 10 C) and sulfidic (>1 mM H2S) deep-sea methane seep ecosystems. We investigated trace metal geochemistry and microbial metal utilization in methane seeps offshore Oregon and California, USA, and report dissolved concentrations of nickel (0.5-270 nM), cobalt (0.5-6 nM), molybdenum (10-5,600 nM) and tungsten (0.3-8 nM) in Hydrate Ridge sediment porewaters. Despite low levels of cobalt and tungsten, metagenomic and metaproteomic data suggest that microbial consortia catalyzing anaerobic oxidation of methane utilize both scarce micronutrients in addition to nickel and molybdenum. Genetic machinery for cobalt-containing vitamin B12 biosynthesis was present in both anaerobic methanotrophic archaea (ANME) and sulfate-reducing bacteria (SRB). Proteins affiliated with the tungsten-containing form of formylmethanofuran dehydrogenase were expressed in ANME from two seep ecosystems, the first evidence for expression of a tungstoenzyme in psychrotolerant microorganisms. Finally, our data suggest that chemical speciation of metals in highly sulfidic porewaters may exert a stronger influence on microbial bioavailability than total concentration

Glass, DR. Jennifer [California Institute of Technology, Pasadena; Yu, DR. Hang [California Institute of Technology, Pasadena; Steele, Joshua [California Institute of Technology, Pasadena; Dawson, Katherine [California Institute of Technology, Pasadena; Sun, S [University of California, San Diego; Chourey, Karuna [ORNL; Hettich, Robert {Bob} L [ORNL; Orphan, V [California Institute of Technology, Pasadena

2014-01-01T23:59:59.000Z

419

Neutron Emission Spectroscopy of Fuel Ion Rotation and Fusion Power Components Demonstrated in the Trace Tritium Experiments at JET  

E-Print Network [OSTI]

Neutron Emission Spectroscopy of Fuel Ion Rotation and Fusion Power Components Demonstrated in the Trace Tritium Experiments at JET

420

Development of a Novel Contamination Resistant Ionchamber for Process Tritium Measurement and use in the JET First Trace Tritium Experiment  

E-Print Network [OSTI]

Development of a Novel Contamination Resistant Ionchamber for Process Tritium Measurement and use in the JET First Trace Tritium Experiment

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


421

Transport Analysis of Trace Tritium Experiments on JET using TRANSP Code and Comparison with Theory-Based Transport Models  

E-Print Network [OSTI]

Transport Analysis of Trace Tritium Experiments on JET using TRANSP Code and Comparison with Theory-Based Transport Models

422

Determination of Method Detection Limits for Trace 232-Thorium and 238-Uranium in Copper using Ion Exchange and ICPMS  

SciTech Connect (OSTI)

Determination of Method Detection Limits for Trace 232-Thorium and 238-Uranium in Copper using Ion Exchange and ICPMS

Hoppe, Eric W.; LaFerriere, Brian D.; Maiti, Tapas C.; Soin, Aleksandr

2014-04-15T23:59:59.000Z

423

Dual Feedback Controlled High Performance Ar Seeded ELMy H-mode Discharges in JET including Trace Tritium Experiments  

E-Print Network [OSTI]

Dual Feedback Controlled High Performance Ar Seeded ELMy H-mode Discharges in JET including Trace Tritium Experiments

424

STRUCTURE ET ENREGISTREMENT DES TRACES LATENTES D'IONS ARGON ET FER DANS L'OLIVINE ET LE MICA MUSCOVITE  

E-Print Network [OSTI]

attaque chimique : l'enre- gistrement des traces n'apparaît pas lié à un mécanisme à seuil énergétique

Boyer, Edmond

425

"Trace Analysis of Speciality and Electronic Gases," Chapter 4, "Emerging Infrared Laser Absorption Spectroscopic Techniques for Gas Analysis"  

SciTech Connect (OSTI)

This chapter covers Laser Absorption Spectroscopic Techniques and Applications of Semiconductor LAS Based Trace Gas Sensor Systems.

Lascola, R.; McWhorter, S.; Tittel, F.; Lewicki, R.

2013-07-01T23:59:59.000Z

426

A Community Atmosphere Model with Superparameterized Clouds  

SciTech Connect (OSTI)

In 1999, National Center for Atmospheric Research (NCAR) scientists Wojciech Grabowski and Piotr Smolarkiewicz created a "multiscale" atmospheric model in which the physical processes associated with clouds were represented by running a simple high-resolution model within each grid column of a lowresolution global model. In idealized experiments, they found that the multiscale model produced promising simulations of organized tropical convection, which other models had struggled to produce. Inspired by their results, Colorado State University (CSU) scientists Marat Khairoutdinov and David Randall created a multiscale version of the Community Atmosphere Model (CAM). They removed the cloud parameterizations of the CAM, and replaced them with Khairoutdinov's high-resolution cloud model. They dubbed the embedded cloud model a "super-parameterization," and the modified CAM is now called the "SP-CAM." Over the next several years, many scientists, from many institutions, have explored the ability of the SP-CAM to simulate tropical weather systems, the day-night changes of precipitation, the Asian and African monsoons, and a number of other climate processes. Cristiana Stan of the Center for Ocean-Land-Atmosphere Interactions found that the SP-CAM gives improved results when coupled to an ocean model, and follow-on studies have explored the SP-CAM's utility when used as the atmospheric component of the Community Earth System Model. Much of this research has been performed under the auspices of the Center for Multiscale Modeling of Atmospheric Processes, a National Science Foundation (NSF) Science and Technology Center for which the lead institution is CSU.

Randall, David; Branson, Mark; Wang, Minghuai; Ghan, Steven J.; Craig, Cheryl; Gettelman, A.; Edwards, Jim

2013-06-18T23:59:59.000Z

427

Controlled atmosphere for fabrication of cermet electrodes  

DOE Patents [OSTI]

A process is disclosed for making an inert electrode composite wherein a metal oxide and a metal are reacted in a gaseous atmosphere at an elevated temperature of at least about 750 C. The metal oxide is at least one of the nickel, iron, tin, zinc and zirconium oxides and the metal is copper, silver, a mixture of copper and silver or a copper-silver alloy. The gaseous atmosphere has an oxygen content that is controlled at about 5--3000 ppm in order to obtain a desired composition in the resulting composite. 2 figs.

Ray, S.P.; Woods, R.W.

1998-08-11T23:59:59.000Z

428

Controlled atmosphere for fabrication of cermet electrodes  

DOE Patents [OSTI]

A process for making an inert electrode composite wherein a metal oxide and a metal are reacted in a gaseous atmosphere at an elevated temperature of at least about 750.degree. C. The metal oxide is at least one of the nickel, iron, tin, zinc and zirconium oxides and the metal is copper, silver, a mixture of copper and silver or a copper-silver alloy. The gaseous atmosphere has an oxygen content that is controlled at about 5-3000 ppm in order to obtain a desired composition in the resulting composite.

Ray, Siba P. (Murrysville, PA); Woods, Robert W. (New Kensington, PA)

1998-01-01T23:59:59.000Z

429

The Atmospheric Radiation Measurement Program Video  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear SecurityTensile Strain Switched Ferromagnetism in Layered NbS2 and NbSe2 .2004The Atmospheric Radiation Measurement

430

Evaluation of sediment trace metal records as paleoproductivity and paleoxygenation proxies in the upwelling center off Concepcin, Chile (36S)  

E-Print Network [OSTI]

Evaluation of sediment trace metal records as paleoproductivity and paleoxygenation proxies the records of several trace metals sensitive to redox conditions in continental shelf sediments off ). The goals of this study were to determine the input of trace metals to the sediment and to decipher how

Demouchy, Sylvie

431

Factors that Contribute to Distribution Patterns of Trace Elements in Maricopa County Xiaoding Zhuo, Panjai Prapaipong and Everett Shock  

E-Print Network [OSTI]

Factors that Contribute to Distribution Patterns of Trace Elements in Maricopa County Xiaoding Zhuo of trace element distributions across Maricopa County from trace elemental analysis of 200 surface soil local Toxic Release Inventory (TRI) air emission obtained from the EPA website (b), and comparison

Hall, Sharon J.

432

Evaluating Trace Cache Energy-Efficiency University of Virginia Dept. of Computer Science Technical Report CS-2004-31  

E-Print Network [OSTI]

Evaluating Trace Cache Energy-Efficiency University of Virginia Dept. of Computer Science Technical {micheleco, skadron}@cs.virginia.edu Abstract Future fetch engines need to be energy-efficient. Therefore compares the energy-efficiency of concurrent trace caches (CTCs), sequential trace caches (STCs), block

Co, Michele

433

Evaluating Trace Cache EnergyEfficiency University of Virginia Dept. of Computer Science Technical Report CS200431  

E-Print Network [OSTI]

Evaluating Trace Cache Energy­Efficiency University of Virginia Dept. of Computer Science Technical {micheleco, skadron}@cs.virginia.edu Abstract Future fetch engines need to be energy­efficient. Therefore compares the energy­efficiency of concurrent trace caches (CTCs), sequential trace caches (STCs), block

Co, Michele

434

Laboratory scale studies of Pd/y-Al2O3 sorbents for the removal of trace contaminents from coal-derived fuel gas at elevated temperatures  

SciTech Connect (OSTI)

The Integrated Gasification Combined Cycle (IGCC) is a promising technology for the use of coal in a clean and efficient manner. In order to maintain the overall efficiency of the IGCC process, it is necessary to clean the fuel gas of contaminants (sulfur, trace compounds) at warm (150-540 C) to hot (>540 C) temperatures. Current technologies for trace contaminant (such as mercury) removal, primarily activated carbon based sorbents, begin to lose effectiveness above 100 C, creating the need to develop sorbents effective at elevated temperatures. As trace elements are of particular environmental concern, previous work by this group has focused on the development of a Pd/{gamma}-Al{sub 2}O{sub 3} sorbent for Hg removal. This paper extends the research to Se (as hydrogen selenide, H{sub 2}Se), As (as arsine, AsH{sub 3}), and P (as phosphine, PH{sub 3}) which thermodynamic studies indicate are present as gaseous species under gasification conditions. Experiments performed under ambient conditions in He on 20 wt.% Pd/{gamma}-Al{sub 2}O{sub 3} indicate the sorbent can remove the target contaminants. Further work is performed using a 5 wt.% Pd/{gamma}-Al{sub 2}O{sub 3} sorbent in a simulated fuel gas (H{sub 2}, CO, CO{sub 2}, N{sub 2} and H{sub 2}S) in both single and multiple contaminant atmospheres to gauge sorbent performance characteristics. The impact of H{sub 2}O, Hg and temperature on sorbent performance is explored.

Rupp, Erik C.; Granite, Evan J.; Stanko, Dennis C.

2010-12-31T23:59:59.000Z

435

EDDY RESOLVING NUTRIENT ECODYNAMICS IN THE GLOBAL PARALLEL OCEAN PROGRAM AND CONNECTIONS WITH TRACE GASES IN THE SULFUR, HALOGEN AND NMHC CYCLES  

SciTech Connect (OSTI)

Ecodynamics and the sea-air transfer of climate relevant trace gases are intimately coupled in the oceanic mixed layer. Ventilation of species such as dimethyl sulfide and methyl bromide constitutes a key linkage within the earth system. We are creating a research tool for the study of marine trace gas distributions by implementing coupled ecology-gas chemistry in the high resolution Parallel Ocean Program (POP). The fundamental circulation model is eddy resolving, with cell sizes averaging 0.15 degree (lat/long). Here we describe ecochemistry integration. Density dependent mortality and iron geochemistry have enhanced agreement with chlorophyll measurements. Indications are that dimethyl sulfide production rates must be adjusted for latitude dependence to match recent compilations. This may reflect the need for phytoplankton to conserve nitrogen by favoring sulfurous osmolytes. Global simulations are also available for carbonyl sulfide, the methyl halides and for nonmethane hydrocarbons. We discuss future applications including interaction with atmospheric chemistry models, high resolution biogeochemical snapshots and the study of open ocean fertilization.

S. CHU; S. ELLIOTT

2000-08-01T23:59:59.000Z

436

Connectivity To Atmospheric Release Advisory Capability  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

To establish DOE and NNSA connectivity to Atmospheric Release Advisory Capability (ARAC) for sites and facilities that have the potential for releasing hazardous materials sufficient to generate certain emergency declarations and to promote efficient use of resources for consequence assessment activities at DOE sites, facilities, operations, and activities in planning for and responding to emergency events. No cancellations.

2001-02-26T23:59:59.000Z

437

Exploring the Deep... Ocean-Atmosphere  

E-Print Network [OSTI]

Climate oscillations 97 #12;Storing energy To understand how solar radiation affects large-scale processes), and biosphere (living organisms) that are driven by solar energy. The ocean and the atmosphere have the greatest on the others. To fully understand the dynamics of our climate, we must examine the global energy balance

Wright, Dawn Jeannine

438

Atmospheric Data Package for the Composite Analysis  

SciTech Connect (OSTI)

The purpose of this data package is to summarize our conceptual understanding of atmospheric transport and deposition, describe how this understanding will be simplified for numerical simulation as part of the Composite Analysis (i.e., implementation model), and finally to provide the input parameters needed for the simulations.

Napier, Bruce A.; Ramsdell, James V.

2005-09-01T23:59:59.000Z

439

THE LOWER SOLAR ATMOSPHERE ROBERT J. RUTTEN  

E-Print Network [OSTI]

THE LOWER SOLAR ATMOSPHERE ROBERT J. RUTTEN Sterrekundig Instituut, Postbus 80 000, NL­3508 TA, Utrecht, The Netherlands Abstract. This "rapporteur" report discusses the solar photosphere and low does not seem to jeopardize precise determination of solar abundances in classical fashion. It is still

Rutten, Rob

440

MIDDLE ATMOSPHERE DYNAMICS ATS 708 (3 credits)  

E-Print Network [OSTI]

Academic Integrity Policy as found in the General Catalog (http://www.catalog.colostate.edu/FrontPDF/1, 1987, Andrews, Holton, Leovy, Academic Press. · Atmospheric and Oceanic Fluid Dynamics, 2006, Vallis Articles (alphabetically): · Baldwin et al., 2001: The quasi-biennial oscillation. Rev. Geophys., 39, 1979

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


441

MIDDLE ATMOSPHERE DYNAMICS AT707 (3 credits)  

E-Print Network [OSTI]

., Holton, J. R., Leovy, C. B., Academic Press, 489 pp. · Atmospheric and Oceanic Fluid Dynamics, 2006 Review Articles: · Haynes, P. H., 2005: Stratospheric Dynamics. Annu. Rev. Fluid Mech., 37, 263­ 293­Dobson Circulation, Residual (Diabatic) Circulations 7.1 Discovery 7.2 Eliassen's Balanced Response to a Mechanical

442

Analysis methods for Atmospheric Cerenkov Telescopes  

E-Print Network [OSTI]

Three different analysis techniques for Atmospheric Imaging System are presented. The classical Hillas parameters based technique is shown to be robust and efficient, but more elaborate techniques can improve the sensitivity of the analysis. A comparison of the different analysis techniques shows that they use different information for gamma-hadron separation, and that it is possible to combine their qualities.

Mathieu de Naurois

2006-07-12T23:59:59.000Z

443

TETTERSTO NATURE Pre-industrial atmospheric  

E-Print Network [OSTI]

, starting with the Greek and Roman cultures3'4.The cumulative deposition from anthropogenicsourcesin preTETTERSTO NATURE Pre-industrial atmospheric lead contamination detected in Swedish lake sediments for pre-industrial atmospherictrace-metalcontaminationt''it is commonlyassumed that air pollution

Short, Daniel

444

Microlensing Effects in Atmospheres of Substars  

E-Print Network [OSTI]

The purpose of the present work is the study of focusing properties of atmospheres of substars that is necessary for adequate interpreting of observational data and for solving the inverse problem consisting in recovery parameters of 'microlenses' (substars) and sources (quasars). Amplification factor for a quasar image as projected onto the field of microlenses-substars was computed for optical and radio wavelengths.

L. A. Berdina; A. A. Minakov

2007-12-10T23:59:59.000Z

445

Propagation of strangelets in the Earth's atmosphere  

E-Print Network [OSTI]

A new model for the description of the behaviour of strangelets in the Earth's atmosphere is presented. Strangelet fission induced by collision with air nuclei is included. It is shown that strangelets with certain parameters of initial mass and energy may reach depths near sea level, which can be examined by ground-based experiments.

Fei Wu; Ren-Xin Xu; Bo-Qiang Ma

2007-02-13T23:59:59.000Z

446

White Dwarf Spectra and Atmosphere Models  

E-Print Network [OSTI]

We describe the spectral classification of white dwarfs and some of the physical processes important for their understanding. In the major part of this paper we discuss the input physics and computational methods for one of the most widely used stellar atmosphere codes for white dwarfs.

Detlev Koester

2008-12-02T23:59:59.000Z

447

JournalofGeophysicalResearch: Atmospheres RESEARCH ARTICLE  

E-Print Network [OSTI]

convection to start from more levels · Simple modification of convective parameterization Correspondence to of the Community Atmosphere Model (CAM4), we show that the overall accuracy in the diurnal simulation of convective rise to diurnal cycles in cloud amount [May et al., 2012] and relative humidity [Soden, 2000] which

Folkins, Ian

448

Cooperative Institute for Research in the Atmosphere  

E-Print Network [OSTI]

#12;2 Cooperative Institute for Research in the Atmosphere Contents 3 Heavy Snowfall regulations designed to elimi- nate human-caused haze in Big Bend and 155 other National Parks), and the Electric Power Research Institute (EPRI), among others. In support of BRAVO, NPS and CIRA scientists

Collett Jr., Jeffrey L.

449

AT 715 (2 Credits) Atmospheric Oxidation Processes  

E-Print Network [OSTI]

: 1. Develop an understanding of kinetic and equilibrium aspects of important chemical pathways, Journal of Geophysical Research, Atmospheric Chemis- try and Physics (on-line), Journal of the Air: reactions of isoprene oxidation products. Environ. Sci. Tech. 40, 4956-4960. #12;

450

Doctoral Programs Atmospheric, Oceanic & Space Sciences  

E-Print Network [OSTI]

Professor; Recipient, Teaching Innovation Prize; Michigan Distinguished Professor of the Year Allison Mission to Comet 67P / Churyumov- Gerasimenko · Solar and Heliospheric Physics Group · STEREO Mission,OceanicandSpaceSciences Atmospheric, Oceanic & Space Sciences University of Michigan Space Research Building 2455 Hayward Street Ann

Eustice, Ryan

451

Land and Atmospheric Science GRAD STUDENT HANDBOOK  

E-Print Network [OSTI]

, transport, and fate of pollutants in soil, air, and water; improving and protecting land, air, and water, Policy and Management Agricultural Industries and Marketing The Department occupies the entire Soil are predominantly occupied by Soil Morphology and Genesis, Environmental Biophysics, and Atmospheric Sciences, plus

Minnesota, University of

452

Methane emission by termites: Impacts on the self-cleansing mechanisms of the atmosphere  

SciTech Connect (OSTI)

Termites are reported to emit large quantities of methane, carbon dioxide, carbon monoxide, hydrogen and dimethyl sulfide. The emission of other trace gases, namely C{sub 2} to C{sub 10} hydrocarbons, is also documented. We have carried out, both in the field and in the laboratory, measurements of methane emissions by Macrotermes subhyalinus (Macrotermitinae), Trinervitermes bettonianus (Termitinae), and unidentified Cubitermes and Microcerotermes species. Measured CH{sub 4} field flux rates ranged from 3.66 to 98.25g per m{sup 2} of termite mound per year. Laboratory measurements gave emission rates that ranged from 14.61 to 165.05 mg CH{sub 4} per termite per year. Gaseous production in all species sampled varied both within species and from species to species. Recalculated global emission of methane from termites was found to be 14.0 x 10{sup 12} g CH{sub 4}, per year. From our study, termites contribution to atmospheric methane content is between 1.11% and 4.25% per year. This study discusses the greenhouse effects as well as photochemical disposal of methane in the lower atmosphere in the tropics and the impacts on the chemistry of HO{sub x} systems and CL{sub x} cycles.

Mugedo, J.Z.A. [Maseno Univ. College (Kenya)

1996-12-31T23:59:59.000Z

453

Smoothing of respiratory motion traces for motion-compensated radiotherapy  

SciTech Connect (OSTI)

Purpose: The CyberKnife system has been used successfully for several years to radiosurgically treat tumors without the need for stereotactic fixation or sedation of the patient. It has been shown that tumor motion in the lung, liver, and pancreas can be tracked with acceptable accuracy and repeatability. However, highly precise targeting for tumors in the lower abdomen, especially for tumors which exhibit strong motion, remains problematic. Reasons for this are manifold, like the slow tracking system operating at 26.5 Hz, and using the signal from the tracking camera ''as is''. Since the motion recorded with the camera is used to compensate for system latency by prediction and the predicted signal is subsequently used to infer the tumor position from a correlation model based on x-ray imaging of gold fiducials around the tumor, camera noise directly influences the targeting accuracy. The goal of this work is to establish the suitability of a new smoothing method for respiratory motion traces used in motion-compensated radiotherapy. The authors endeavor to show that better prediction--With a lower rms error of the predicted signal--and/or smoother prediction is possible using this method. Methods: The authors evaluated six commercially available tracking systems (NDI Aurora, PolarisClassic, Polaris Vicra, MicronTracker2 H40, FP5000, and accuTrack compact). The authors first tracked markers both stationary and while in motion to establish the systems' noise characteristics. Then the authors applied a smoothing method based on the a trous wavelet decomposition to reduce the devices' noise level. Additionally, the smoothed signal of the moving target and a motion trace from actual human respiratory motion were subjected to prediction using the MULIN and the nLMS{sub 2} algorithms. Results: The authors established that the noise distribution for a static target is Gaussian and that when the probe is moved such as to mimic human respiration, it remains Gaussian with the exception of the FP5000 and the Aurora systems. The authors also showed that the proposed smoothing method can indeed be used to filter noise. The signal's jitter dropped by as much as 95% depending on the tracking system employed. Subsequently, the 3D prediction error (rms) for a prediction horizon of 150 ms on a synthetic signal dropped by up to 37% when using a normalized LMS prediction algorithm (nLMS{sub 2}) and hardly changed when using a MULIN algorithm. When smoothing a real signal obtained in our laboratory, the improvement of prediction was similar: Up to 30% for both the nLMS{sub 2} and the best MULIN algorithm. The authors also found a noticeable increase in smoothness of the predicted signal, the relative jitter dropped by up to 95% on the real signal, and on the simulated signal. Conclusions: In conclusion, the authors can say that preprocessing of marker data is very useful in motion-compensated radiotherapy since the quality of prediction increases. This will result in better performance of the correlation model. As a side effect, since the prediction of a preprocessed signal is also less noisy, the authors expect less robot vibration resulting in better targeting accuracy and less strain on the robot gears.

Ernst, Floris; Schlaefer, Alexander; Schweikard, Achim [Institute for Robotics and Cognitive Systems, University of Luebeck, Ratzeburger Allee 160, Luebeck SH 23538 (Germany)

2010-01-15T23:59:59.000Z

454

Calibration of LSST Instrumental and Atmospheric Photometric Passbands  

SciTech Connect (OSTI)

The Large Synoptic Survey Telescope (LSST) will continuously image the entire sky visible from Cerro Pachon in northern Chile every 3-4 nights throughout the year. The LSST will provide data for a broad range of science investigations that require better than 1% photometric precision across the sky (repeatability and uniformity) and a similar accuracy of measured broadband color. The fast and persistent cadence of the LSST survey will significantly improve the temporal sampling rate with which celestial events and motions are tracked. To achieve these goals, and to optimally utilize the observing calendar, it will be necessary to obtain excellent photometric calibration of data taken over a wide range of observing conditions - even those not normally considered 'photometric'. To achieve this it will be necessary to routinely and accurately measure the full optical passband that includes the atmosphere as well as the instrumental telescope and camera system. The LSST mountain facility will include a new monochromatic dome illumination projector system to measure the detailed wavelength dependence of the instrumental passband for each channel in the system. The facility will also include an auxiliary spectroscopic telescope dedicated to measurement of atmospheric transparency at all locations in the sky during LSST observing. In this paper, we describe these systems and present laboratory and observational data that illustrate their performance.

Burke, David L.; /SLAC; Axelrod, T.; /Arizona U., Astron. Dept. - Steward Observ.; Barrau, Aurelien; Baumont, Sylvain; /LPSC, Grenoble; Blondin, Stephane; /Marseille, CPPM; Claver, Chuck; /NOAO, Tucson; Gorecki, Alexia; /LPSC, Grenoble; Ivezic, Zeljko; Jones, Lynne; /Washington U., Seattle, Astron. Dept.; Krabbendam, Victor; Liang, Ming; Saha, Abhijit; /NOAO, Tucson; Smith, Allyn; /Austin Peay State U.; Smith, R.Chris; /Cerro-Tololo InterAmerican Obs.; Stubbs, Christopher W.; /Harvard-Smithsonian Ctr. Astrophys.

2011-07-06T23:59:59.000Z

455

The oceanic cycle and global atmospheric budget of carbonyl sulfide  

SciTech Connect (OSTI)

A significant portion of stratospheric air chemistry is influenced by the existence of carbonyl sulfide (COS). This ubiquitous sulfur gas represents a major source of sulfur to the stratosphere where it is converted to sulfuric acid aerosol particles. Stratospheric aerosols are climatically important because they scatter incoming solar radiation back to space and are able to increase the catalytic destruction of ozone through gas phase reactions on particle surfaces. COS is primarily formed at the surface of the earth, in both marine and terrestrial environments, and is strongly linked to natural biological processes. However, many gaps in the understanding of the global COS cycle still exist, which has led to a global atmospheric budget that is out of balance by a factor of two or more, and a lack of understanding of how human activity has affected the cycling of this gas. The goal of this study was to focus on COS in the marine environment by investigating production/destruction mechanisms and recalculating the ocean-atmosphere flux.

Weiss, P.S.

1994-12-31T23:59:59.000Z

456

Temporal modulation of plasma species in atmospheric dielectric barrier discharges  

SciTech Connect (OSTI)

The atmospheric pressure dielectric barrier discharge in helium is a pulsed discharge in nature and the moment of maximum species densities is almost consistent with peak discharge current density. In this paper, a one-dimensional fluid model is used to investigate the temporal structure of plasma species in an atmospheric He-N{sub 2} dielectric barrier discharge (DBD). It is demonstrated that there exist microsecond delays of the moments of the maximum electron and ion densities from the peak of discharge current density. These time delays are caused by a competition between the electron impact and Penning ionizations, modulated by the N{sub 2} level in the plasma-forming gas. Besides, significant electron wall losses lead to the DBD being more positively charged and, with a distinct temporal separation in the peak electron and cation densities, the plasma is characterized with repetitive bursts of net positive charges. The temporal details of ionic and reactive plasma species may provide a new idea for some biological processes.

Yang, Aijun; Wang, Xiaohua, E-mail: xhw@mail.xjtu.edu.cn, E-mail: mzrong@mail.xjtu.edu.cn; Liu, Dingxin; Rong, Mingzhe, E-mail: xhw@mail.xjtu.edu.cn, E-mail: mzrong@mail.xjtu.edu.cn [Centre for Plasma Biomedicine, State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an 710049 (China); Kong, Michael G. [Centre for Plasma Biomedicine, State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an 710049 (China); Frank Reidy Research Center for Bioelectrics, Department of Electrical and Computer Engineering, Old Dominion University, Virginia 23508 (United States); Department of Electrical and Computer Engineering, Old Dominion University, Norfolk, Virginia 23529 (United States)

2014-07-15T23:59:59.000Z

457

Striated microdischarges in an asymmetric barrier discharge in argon at atmospheric pressure  

SciTech Connect (OSTI)

The investigation of striated microdischarges in barrier discharges in argon at atmospheric pressure is reported. Microdischarges were investigated by means of electrical measurements correlated with intensified CCD camera imaging. The scaling law theory known from low-pressure glow discharge diagnostics was applied in order to describe and explain this phenomenon. The investigated microdischarge is characterized as a transient atmospheric-pressure glow discharge with a stratified column. It can be described by similarity parameters i/r{approx_equal}0.13 A/cm, pr{approx_equal}5 Torr cm, and 3<{lambda}/r<5 with the current i, pressure p, interval of subsequent striations {lambda}, and radius of the plasma channel r. An attempt to describe the mechanism of creation of a striated structure is given, based on an established model of the spatial electron relaxation.

Hoder, Tomas; Loffhagen, Detlef; Wilke, Christian; Grosch, Helge; Schaefer, Jan; Weltmann, Klaus-Dieter; Brandenburg, Ronny [Leibniz Institute for Plasma Science and Technology, Felix-Hausdorff-Str. 2, D-17489 Greifswald (Germany)

2011-10-15T23:59:59.000Z

458

E-Print Network 3.0 - aristotelis trace elements Sample Search...  

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

results for: aristotelis trace elements Page: << < 1 2 3 4 5 > >> 1 Examen LA207 Matlab: applications en mecanique Summary: en imposant la vue de dessus avec la fonction...

459

E-Print Network 3.0 - airbone trace metals Sample Search Results  

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

and Loss of Heavy Metals from Experimental Salt Marsh Plots Summary: L of 12 M trace metal grade hydrochloric acid (HCl) and reheated the samples to 65-80 C in a water bath......

460

Trace metal contamination of waters, sediments, and organisms of the Swan Lake area of Galveston Bay  

E-Print Network [OSTI]

facility (Gulf Coast Waste Disposal Authority) is located north of the Wah Chang Ditch. Consequently there have been concerns about possible metal contamination in this area. I determined trace metal concentrations in water, sediments, and organisms (oyster...

Park, Junesoo

1995-01-01T23:59:59.000Z

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


461

Experimental studies on the bioaccumulation and bioavailability of colloidally-bound trace metals to penaeid shrimp  

E-Print Network [OSTI]

Trace metals in estuarine systems frequently exist as colloid-ion complexes and the chemical characteristics of these complexes may alter their bioavailability. The relative hydrophobicity of the colloid-ion complex could influence bio-uptake across...

Carvalho, Roberta Anne

1996-01-01T23:59:59.000Z

462

Memory Trace Oblivious Program Execution Department of Computer Science Technical Report CS-TR-5020  

E-Print Network [OSTI]

to the computing platform can perform various physical attacks, including prob- ing memory buses and coldMemory Trace Oblivious Program Execution Department of Computer Science Technical Report CS-TR-5020

Shi, Elaine

463

Building Technologies Program: Tax Deduction Qualified Software- TRACE 700 version 6.2.6  

Broader source: Energy.gov [DOE]

Provides required documentation that TRACE 700 version 6.2.6 meets Internal Revenue Code §179D, Notice 2006-52, dated June 2, 2006, for calculating commercial building energy and power cost savings.

464

Building Technologies Program: Tax Deduction Qualified Software- TRACE 700 version 6.2.5  

Broader source: Energy.gov [DOE]

Provides required documentation that TRACE 700 version 6.2.5 meets Internal Revenue Code §179D, Notice 2006-52, dated June 2, 2006, for calculating commercial building energy and power cost savings.

465

Building Technologies Program: Tax Deduction Qualified Software- TRACE 700 version 6.2.9  

Broader source: Energy.gov [DOE]

Provides required documentation that TRACE 700 version 6.2.9 meets Internal Revenue Code §179D, Notice 2006-52, dated June 2, 2006, for calculating commercial building energy and power cost savings.

466

Building Technologies Program: Tax Deduction Qualified Software- TRACE 700 version 6.2.8  

Broader source: Energy.gov [DOE]

Provides required documentation that TRACE 700 version 6.2.8 meets Internal Revenue Code §179D, Notice 2006-52, dated June 2, 2006, for calculating commercial building energy and power cost savings.

467

Building Technologies Program: Tax Deduction Qualified Software- TRACE 700 version 6.2.7  

Broader source: Energy.gov [DOE]

Provides required documentation that TRACE 700 version 6.2.7 meets Internal Revenue Code §179D, Notice 2006-52, dated June 2, 2006, for calculating commercial building energy and power cost savings.

468

Building Technologies Program: Tax Deduction Qualified Software- TRACE 700 version 6.1.1.0  

Broader source: Energy.gov [DOE]

Provides required documentation that TRACE 700 version 6.1.1.0 meets Internal Revenue Code §179D, Notice 2006-52, dated June 2, 2006, for calculating commercial building energy and power cost savings.

469

Building Technologies Program: Tax Deduction Qualified Software- TRACE 700 version 6.2.4  

Broader source: Energy.gov [DOE]

Provides required documentation that TRACE 700 version 6.2.4 meets Internal Revenue Code §179D, Notice 2006-52, dated June 2, 2006, for calculating commercial building energy and power cost savings.

470

Building Technologies Program: Tax Deduction Qualified Software- TRACE 700 version 6.1.2  

Broader source: Energy.gov [DOE]

Provides required documentation that TRACE 700 version 6.1.2 meets Internal Revenue Code §179D, Notice 2006-52, dated June 2, 2006, for calculating commercial building energy and power cost savings.

471

Building Technologies Program: Tax Deduction Qualified Software- TRACE 700 version 6.1.0.0  

Broader source: Energy.gov [DOE]

Provides required documentation that TRACE 700 version 6.1.0.0 meets Internal Revenue Code §179D, Notice 2006-52, dated June 2, 2006, for calculating commercial building energy and power cost savings.

472

Contact tracing and epidemics control in social networks Ramon Huerta1,2  

E-Print Network [OSTI]

-field equations show secondary epidemics if the contact tracing is not performed with sufficient strength. We also of recovery is either deterministic or purely stochastic with a certain typical time of recovery

Hasty, Jeff

473

Cell Ashing for Trace Element Analysis: A New Approach Based on Ultraviolet/Ozone  

E-Print Network [OSTI]

: synchrotron spectromicroscopy; micro- chemical analysis; MEPHISTO; ashing; incineration; trace element. Ashing ashing is based on high-temperature incineration or on the exposure to oxygen plasma (1­ 4). We adopted

Gilbert, Pupa Gelsomina De Stasio

474

Printing 3D Electrical Traces in Additive Manufactured Parts via Low Melting Temperature  

E-Print Network [OSTI]

Printing 3D Electrical Traces in Additive Manufactured Parts via Low where commercial Additive Manufacturing (AM) techniques can be used to concurrently construct quality and robustness of systems produced using additive manufacturing (AM) techniques is beginning

Dollar, Aaron M.

475

RAPID COMMUNICATION CW DFB RT diode laser-based sensor for trace-gas detection  

E-Print Network [OSTI]

wave thermoelectrically cooled, distributed feedback diode laser will be described. The CW TEC DFB- moelectrically cooled (TEC), distributed feedback diode laser-based spectroscopic trace-gas sensor for ultra tunable diode laser absorption spectroscopy (TDLAS) and wavelength modulation spectroscopy

476

Removal of inorganic trace contaminants by electrodialysis in a remote Australian community   

E-Print Network [OSTI]

Water provision for developing countries is a critical issue as a vast number of lives are lost annually due to lack of access to safe drinking water. The presence and fate of inorganic trace contaminants is of particular ...

Banasiak, Laura J.; Schäfer, Andrea

2009-01-01T23:59:59.000Z

477

THESIS FOR THE DEGREE OF LICENTIATE OF ENGINEERING View Frustum Culling and Animated Ray Tracing  

E-Print Network [OSTI]

THESIS FOR THE DEGREE OF LICENTIATE OF ENGINEERING View Frustum Culling and Animated Ray Tracing Thesis for the degree of Licentiate of Engineering, a Swedish degree between M.Sc. and Ph.D. Abstract

Assarsson, Ulf

478

Feedback-Directed Page Placement for ccNUMA via Hardware-generated Memory Traces  

E-Print Network [OSTI]

-cores architectures. Under ccNUMA, data placement may influence over- all application performance significantly of experiments to main-stream NUMA-based x86-based systems and lossy trace collection with Intel's PEBS-based PMU

Mueller, Frank

479

Interactive Isosurface Ray Tracing of Large Octree Aaron Knoll, Ingo Wald, Steven Parker, and Charles Hansen  

E-Print Network [OSTI]

, and Charles Hansen UUSCI-2006-026 Scientific Computing and Imaging Institute University of Utah Salt Lake City-026 Interactive Isosurface Ray Tracing of Large Octree Volumes Aaron Knoll Ingo Wald Steven Parker Charles Hansen

Utah, University of

480

Investigation of Unusual Albedos in the SGP Domain  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsingFunInfrared LandResponses toInvestigating ExtremeInvestigationInvestigation of

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


481

Treatise on Invertebrate Paleontology, Part W, conodonts, conoidal shells, worms, trace fossils: comments and additions  

E-Print Network [OSTI]

THE UNIVERSITY OF KANSAS PALEONTOLOGICAL CONTRIBUTIONS July 11, 1966 Paper 9 TREATISE ON INVERTEBRATE PALEONTOLOGY, PART W, CONODONTS, CONOIDAL SHELLS, WORMS, TRACE FOSSILS: COMMENTS AND ADDITIONS By F. H. T. Rhodes, Walter Hüntzschel, K. J. Müller... AFFINITIES D W. Fisher Part 4. ANNELID Serpti/OldCS SOWERBY Curt Teichcrt Part 5. RECENT CONTRIBUTIONS TO KNOWLEDGE OF TRACE FOSSILS AND PROBLEMATICA Walter Hantzschel EDITORIAL PREFACE CURT TEICHERT University of Kansas This is the first of a series...

Rhodes, F. H. T.; Hä ntzschel, W.; Mü ller, K. H.; Fisher, D. W.; Teichert, C.

1966-07-11T23:59:59.000Z

482

On single qubit quantum process tomography for trace-preserving and nontrace-preserving maps  

E-Print Network [OSTI]

We review single-qubit quantum process tomography for trace-preserving and nontrace-preserving processes, and derive explicit forms of the general constraints for fitting experimental data. These forms provide additional insight into the structure of the process matrix as well as reveal a tighter bound on the trace of a nontrace-preserving process than has been previously stated. We also describe, for completeness, how to incorporate measured imperfect input states.

Ramesh Bhandari; Nicholas A. Peters

2015-02-03T23:59:59.000Z

483

Phenomena of oscillations in atmospheric pressure direct current glow discharges  

SciTech Connect (OSTI)

Self-sustained oscillations in a dc glow discharge with a semiconductor layer at atmospheric pressure were investigated by means of a one-dimensional fluid model. It is found that the dc glow discharge initially becomes unstable in the subnormal glow region and gives rise to oscillations of plasma parameters. A variety of oscillations with one or more frequencies have been observed under different conditions. The discharge oscillates between the glow discharge mode and the Townsend discharge mode in the oscillations with large amplitude while operates in the subnormal glow discharge mode all the while in the oscillations with small amplitude. Fourier Transform spectra of oscillations reveal the transition mechanism between different oscillations. The effects of semiconductor conductivity on the oscillation frequency of the dominant mode, gas voltage, as well as the discharge current have also been analyzed.

Liu, Fu-cheng [College of Physics Science and Technology, Hebei University, Baoding 071002 (China)] [College of Physics Science and Technology, Hebei University, Baoding 071002 (China); Yan, Wen; Wang, De-zhen [School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024 (China)] [School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024 (China)

2013-12-15T23:59:59.000Z

484

A Grid of FASTWIND NLTE Model Atmospheres of Massive Stars  

E-Print Network [OSTI]

In the last few years our knowledge of the physics of massive stars has improved tremendously. However, further investigations are still needed, especially regarding accurate calibrations of their fundamental parameters. To this end, we have constructed a comprehensive grid of NLTE model atmospheres and corresponding synthetic spectra in the massive star domain. The grid covers the complete B type spectral range, extended to late O on the hot side and early A on the cool side, from supergiants to dwarfs and from weak stellar winds to very strong ones. It has been calculated with the latest version of the FASTWIND code. The analysis of an extensive sample of OB stars in the framework of the COROT space mission will lead to accurate calibrations of effective temperatures, gravities, mass loss rates etc. This paper contains a detailed description of the grid, which has been baptised as BSTAR06 and which will be available for further research in the near future.

K. Lefever; J. Puls; C. Aerts

2006-09-22T23:59:59.000Z

485

Atmospheric and Wake Turbulence Impacts on Wind Turbine Fatigue Loading: Preprint  

SciTech Connect (OSTI)

Large-eddy simulations of atmospheric boundary layers under various stability and surface roughness conditions are performed to investigate the turbulence impact on wind turbines. In particular, the aeroelastic responses of the turbines are studied to characterize the fatigue loading of the turbulence present in the boundary layer and in the wake of the turbines. Two utility-scale 5 MW turbines that are separated by seven rotor diameters are placed in a 3 km by 3 km by 1 km domain. They are subjected to atmospheric turbulent boundary layer flow and data is collected on the structural response of the turbine components. The surface roughness was found to increase the fatigue loads while the atmospheric instability had a small influence. Furthermore, the downstream turbines yielded higher fatigue loads indicating that the turbulent wakes generated from the upstream turbines have significant impact.

Lee, S.; Churchfield, M.; Moriarty, P.; Jonkman, J.; Michalakes, J.

2011-12-01T23:59:59.000Z

486

Towards Space Solar Power - Examining Atmospheric Interactions of Power Beams with the HAARP Facility  

E-Print Network [OSTI]

In the most common space solar power (SSP) system architectures, solar energy harvested by large satellites in geostationary orbit is transmitted to Earth via microwave radiation. Currently, only limited information about the interactions of microwave beams with energy densities of several tens to hundreds of W/m$^2$ with the different layers of the atmosphere is available. Governmental bodies will likely require detailed investigations of safety and atmospheric effects of microwave power beams before issuing launch licenses for SSP satellite systems. This paper proposes to collect representative and comprehensive data of the interaction of power beams with the atmosphere by extending the infrastructure of the High Frequency Active Auroral Research Program (HAARP) facility in Alaska, USA. Estimates of the transmission infrastructure performance as well as measurement devices and scientific capabilities of possible upgrade scenarios will be discussed. The proposed upgrade of the HAARP facility is expected to d...

Leitgab, M

2014-01-01T23:59:59.000Z

487

Found: The missing blue opacity in atmosphere models of cool hydrogen white dwarfs  

E-Print Network [OSTI]

We investigate the importance of the far red wing of the Lyman $ \\alpha$ line of hydrogen in the atmospheres of cool white dwarfs of pure hydrogen composition. We find that this absorption process dominates all important sources of opacity in the blue part of the optical spectrum of these stars. Our successful fits to the spectra of cool DA/DC white dwarfs indicate that the far red wing of the $\\rm Ly \\alpha$ line is the source of opacity that had been missing in the models. The observed sequence of cool white dwarfs in color-color diagrams is very well reproduced by our new pure hydrogen atmosphere models, suggesting that the atmospheric composition of the coolest DC white dwarfs must be revisited.

P. M. Kowalski; D. Saumon

2006-09-26T23:59:59.000Z

488

Atmosphere, Interior, and Evolution of the Metal-Rich Transiting Planet HD 149026b  

E-Print Network [OSTI]

We investigate the atmosphere and interior of the new transiting planet HD 149026b, which appears to be very rich in heavy elements. We first compute model atmospheres at metallicities ranging from solar to ten times solar, and show how for cases with high metallicity or inefficient redistribution of energy from the day side, the planet may develop a hot stratosphere due to absorption of stellar flux by TiO and VO. The spectra predicted by these models are very different than cooler atmosphere models without stratospheres. The spectral effects are potentially detectable with the Spitzer Space Telescope. In addition the models with hot stratospheres lead to a large limb brightening, rather than darkening. We compare the atmosphere of HD 149026b to other well-known transiting planets, including the recently discovered HD 189733b, which we show have planet-to-star flux ratios twice that of HD 209458 and TrES-1. The methane abundance in the atmosphere of HD 189733b is a sensitive indicator of atmospheric temperature and metallicity and can be constrained with Spitzer IRAC observations. We then turn to interior studies of HD 149026b and use a grid of self-consistent model atmospheres and high-pressure equations of state for all components to compute thermal evolution models of the planet. We estimate that the mass of heavy elements within the planet is in the range of 60 to 93 M_earth. Finally, we discuss trends in the radii of transiting planets with metallicity in light of this new member of the class.

J. J. Fortney; D. Saumon; M. S. Marley; K. Lodders; R. S. Freedman

2006-01-03T23:59:59.000Z

489

TRACES X-Ray Standard Safety Protocols 1. The equipment should be used under the guidance and supervision of the TRACES Staff or  

E-Print Network [OSTI]

exposed. 3. Personal dosimeter badges must be worn when operating portable X-ray equipment. Wrist sample. 5. The X-Ray instruments are located in TRACES and access is restricted. Furthermore of ANY X-Ray instrumentation is in progress. 8. All lights, meters and controls must be properly labeled

Wells, Mathew G. - Department of Physical and Environmental Sciences, University of Toronto

490

Performance of the STACEE Atmospheric Cherenkov Telescope  

E-Print Network [OSTI]

The Solar Tower Atmospheric Cherenkov Effect Experiment (STACEE) is located at the National Solar Thermal Test Facility of Sandia National Laboratories in Albuquerque, New Mexico, USA. The field of solar tracking mirrors (heliostats) around a central receiver tower is used to direct Cherenkov light from atmospheric showers onto secondary mirrors on the tower, which in turn image the light onto cameras of photomultiplier tubes. The STACEE Collaboration has previously reported a detection of the Crab Nebula with approximately 7 standard deviation significance, using 32 heliostats (STACEE-32). This result demonstrates both the viability of the technique and the suitability of the site. We are in the process of completing an upgrade to 48 heliostats (STACEE-48) en route to an eventual configuration using 64 heliostats (STACEE-64) in early 2001. In this paper, we summarize the results obtained on the sensitivity of STACEE-32 and our expectations for STACEE-48 and STACEE-64.

STACEE Collaboration; D. A. Williams; D. Bhattacharya; L. M. Boone; M. C. Chantell; Z. Conner; C. E. Covault; M. Dragovan; P. Fortin; D. Gingrich; D. T. Gregorich; D. S. Hanna; G. Mohanty; R. Mukherjee; R. A. Ong; S. Oser; K. Ragan; R. A. Scalzo; D. R. Schuette; C. G. Theoret; T. O. Tumer; F. Vincent; J. A. Zweerink

2000-10-17T23:59:59.000Z

491

Performance of the STACEE Atmospheric Cherenkov Telescope  

E-Print Network [OSTI]

The Solar Tower Atmospheric Cherenkov Effect Experiment (STACEE) is located at the National Solar Thermal Test Facility of Sandia National Laboratories in Albuquerque, New Mexico, USA. The field of solar tracking mirrors (heliostats) around a central receiver tower is used to direct Cherenkov light from atmospheric showers onto secondary mirrors on the tower, which in turn image the light onto cameras of photomultiplier tubes. The STACEE Collaboration has previously reported a detection of the Crab Nebula with approximately 7 standard deviation significance, using 32 heliostats (STACEE-32). This result demonstrates both the viability of the technique and the suitability of the site. We are in the process of completing an upgrade to 48 heliostats (STACEE-48) en route to an eventual configuration using 64 heliostats (STACEE-64) in early 2001. In this paper, we summarize the results obtained on the sensitivity of STACEE-32 and our expectations for STACEE-48 and STACEE-64.

Williams, D A; Boone, L M; Chantell, M C; Conner, Z; Covault, C E; Dragovan, M; Fortin, P; Gingrich, D M; Gregorich, D T; Hanna, D S; Mohanty, G B; Mukherjee, R; Ong, R A; Oser, S M; Ragan, K; Scalzo, R A; Schütte, D R; Theoret, C G; Tümer, T O; Vincent, F; Zweerink, J A

2000-01-01T23:59:59.000Z

492

Atmospheric rivers as Lagrangian coherent structures  

E-Print Network [OSTI]

We show that filamentous Atmospheric Rivers (ARs) over the Northern Atlantic Ocean are closely linked to attracting Lagrangian Coherent Structures (LCSs) in the large scale wind field. LCSs represent lines of attraction in the evolving flow with a significant impact on all passive tracers. Using Finite-Time Lyapunov Exponents (FTLE), we extract LCSs from a two-dimensional flow derived from water vapor flux of atmospheric reanalysis data and compare them to the three-dimensional LCS obtained from the wind flow. We correlate the typical filamentous water vapor patterns of ARs with LCSs and find that LCSs bound the filaments on the back side. Passive advective transport of water vapor from tropical latitudes is potentially possible.

Garaboa, Daniel; Huhn, Florian; Perez-Muñuzuri, Vicente

2015-01-01T23:59:59.000Z

493

Theoretical Emission Spectra of Atmospheres of Hot Rocky Super-Earths  

E-Print Network [OSTI]

Motivated by recent detection of transiting high-density super-Earths, we explore the detectability of hot rocky super-Earths orbiting very close to their host stars. In the environment hot enough for their rocky surfaces to be molten, they would have the atmosphere composed of gas species from the magma oceans. In this study, we investigate the radiative properties of the atmosphere that is in the gas/melt equilibrium with the underlying magma ocean. Our equilibrium calculations yield Na, K, Fe, Si, SiO, O, and O$_2$ as the major atmospheric species. We compile the radiative-absorption line data of those species available in literature, and calculate their absorption opacities in the wavelength region of 0.1--100~$\\mathrm{\\mu m}$. Using them, we integrate the thermal structure of the atmosphere. Then, we find that thermal inversion occurs in the atmosphere because of the UV absorption by SiO. In addition, we calculate the ratio of the planetary to stellar emission fluxes during secondary eclipse, and find pr...

Ito, Yuichi; Kawahara, Hajime; Nagahara, Hiroko; Kawashima, Yui; Nakamoto, Taishi

2015-01-01T23:59:59.000Z

494

Pulsed atmospheric fluidized bed combustor apparatus  

DOE Patents [OSTI]

A pulsed atmospheric fluidized bed reactor system is disclosed and claimed along with a process for utilization of same for the combustion of, e.g. high sulfur content coal. The system affords a economical, ecologically acceptable alternative to oil and gas fired combustors. The apparatus may also be employed for endothermic reaction, combustion of waste products, e.g., organic and medical waste, drying materials, heating air, calcining and the like.

Mansour, Momtaz N. (Columbia, MD)

1993-10-26T23:59:59.000Z

495

ATMOSPHERIC CO2 A GLOBAL LIMITING RESOURCE  

E-Print Network [OSTI]

Carbondioxideatmosphericburden,PgC Land use Fossil CO2 from land use emissions ­ not fossil fuel combustion ­ was the dominant CO2 Comparison of CO2 mixing ratio from fossil fuel combustion and land use changes 400 380 360 340 cores 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 Forcing,Wm -2 #12;ATMOSPHERIC CO2 EMISSIONS Time series 1700

Schwartz, Stephen E.

496

Our Dusty Atmosphere | Department of Energy  

Energy Savers [EERE]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion |Energy UsageAUDITVehicles »Exchange VisitorsforDepartment ofNoOrganizationDusty Atmosphere

497

NREL: Process Development and Integration Laboratory - Atmospheric  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the Contributions and AchievementsResearchReliabilityand7 November

498

Atmospheric Pressure Deposition for Electrochromic Windows  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-Up fromDepartmentTie Ltd: Scope Change #1Impacts |Services SubcommitteeAtmosphere

499

The determination of the trajectory of Chelyabinsk bolide according to the records of the drive cams and the simulation of the fragments motion in the atmosphere  

E-Print Network [OSTI]

The determination of the trajectory of Chelyabinsk bolide according to the video records is performed and the results of the simulation of the fragment motion in the atmosphere are showed including its state at that moment. The methods of distortion compensation and adjusting of the video images with the calibration images and the iterative method of the trajectory improvement by azimuths and altitudes are developed. These methods allow improving the precision of the trajectory tracing to the hundreds of meters in space and to the tens of arc minutes in the angular measure.

Ionov, G V

2014-01-01T23:59:59.000Z

500

Large area atmospheric-pressure plasma jet  

DOE Patents [OSTI]

Large area atmospheric-pressure plasma jet. A plasma discharge that can be operated at atmospheric pressure and near room temperature using 13.56 MHz rf power is described. Unlike plasma torches, the discharge produces a gas-phase effluent no hotter than 250.degree. C. at an applied power of about 300 W, and shows distinct non-thermal characteristics. In the simplest design, two planar, parallel electrodes are employed to generate a plasma in the volume therebetween. A "jet" of long-lived metastable and reactive species that are capable of rapidly cleaning or etching metals and other materials is generated which extends up to 8 in. beyond the open end of the electrodes. Films and coatings may also be removed by these species. Arcing is prevented in the apparatus by using gas mixtures containing He, which limits ionization, by using high flow velocities, and by properly spacing the rf-powered electrode. Because of the atmospheric pressure operation, there is a negligible density of ions surviving for a sufficiently long distance beyond the active plasma discharge to bombard a workpiece, unlike the situation for low-pressure plasma sources and conventional plasma processing methods.

Selwyn, Gary S. (Los Alamos, NM); Henins, Ivars (Los Alamos, NM); Babayan, Steve E. (Huntington Beach, CA); Hicks, Robert F. (Los Angeles, CA)

2001-01-01T23:59:59.000Z