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Note: This page contains sample records for the topic "n2 h2s hg" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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We encourage you to perform a real-time search of NLEBeta
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1

New Process Concept for H2S Capture from Syngas  

Science Journals Connector (OSTI)

In this last case, the H2S concentration has been set around 1% mol, such as in syngas from coal/petcoke gasification; the sulfur content in biomass, such as wood chips, would be typically low, but a higher concentration was assumed to extend our analysis—although fictitiously—to other types of biomasses, such as urban residues, with different qualities and compositions. ... The currently proposed technology could be a competitive alternative to existing ones and a viable route to improve the energy efficiency of processes producing power or chemicals from coal, petcoke and biomass. ...

Fabio Ruggeri; Maria Sudiro; Inida Papa; Alessia Gallio; Alberto Bertucco; Marco Fontana

2011-09-19T23:59:59.000Z

2

Mineralization of Basalts in the CO2-H2O-H2S System. | EMSL  

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

H2S System. Mineralization of Basalts in the CO2-H2O-H2S System. Abstract: Basalt samples representing five different formations were immersed in water equilibrated with...

3

Accurate Thermodynamic Model for the Calculation of H2S Solubility in Pure Water and Brines  

E-Print Network [OSTI]

Accurate Thermodynamic Model for the Calculation of H2S Solubility in Pure Water and Brines Zhenhao, 2007 A thermodynamic model calculating the solubility of hydrogen sulfide (H2S) in pure water phase. With this specific interaction approach, this model is able to predict H2S solubility in other

Zhu, Chen

4

Sulfur Impregnation on Activated Carbon Fibers through H2S Oxidation for Vapor Phase  

E-Print Network [OSTI]

Sulfur Impregnation on Activated Carbon Fibers through H2S Oxidation for Vapor Phase Mercury: Sulfur was impregnated onto activated carbon fibers ACFs through H2S oxidation catalyzed by the sorbent CE Database subject headings: Activated carbon; Sulfur; Mercury; Hydrogen sulfides; Oxidation

Borguet, Eric

5

Modeling Studies on the Transport of Benzene and H2S in CO2-Water Systems  

E-Print Network [OSTI]

interest in subcritical (hot/liquid) water from 298 K to 473subcritical region. Modeling Studies on the Transport of Benzene and H 2 S in CO 2 -Water

Zheng, L.

2011-01-01T23:59:59.000Z

6

Influence of pp ions on pion absorption in H2 S. Jonsell,1  

E-Print Network [OSTI]

of experiments measuring the mass difference m m 0 from pion absorption in pionic atoms. These mechanismsInfluence of pp ions on pion absorption in H2 S. Jonsell,1 J. Wallenius,2 and P. Froelich1 1 Institute for Theoretical Atomic and Molecular Physics, Harvard-Smithsonian Center for Astrophysics, 60

7

Rate-Based Modeling of Reactive Absorption of CO2 and H2S into Aqueous Methyldiethanolamine  

E-Print Network [OSTI]

in the liquid phase. This framework was applied to the selective absorption of H2S from fuel gas containing CO2 primarily by physical absorption. Gas-film resistance is never significant for CO2 absorption. For H2S enhancement factors for the gas-liquid reactions. In the application to the removal of CO2 using alkanolamines

Rochelle, Gary T.

8

Effects of Alloying on the Chemistry of CO and H2S on Fe Surfaces D. E. Jiang  

E-Print Network [OSTI]

dusting is preceded by carbide formation, those carbides are not stable and decompose to fine metal and the relatively weak H-S bond, the barriers for H2S dissociation on transition-metal surfaces are usually very. Sulfur can also cause the embrittlement of transition metals such as Ni and Fe.7 Moreover, since H2S

Carter, Emily A.

9

A Study of the Zn-based Desulfurization Sorbents for H2S Removal in the IGCC  

Science Journals Connector (OSTI)

Recently, the possibility for the simultaneous removal of H2S and NH3...on the Zn–Ti-based sorbents has been tested by various researchers using several additives like Co, Ni, Fe, Mo and ... W. However, the resea...

Suk Yong Jung; Soo Chool Lee; Hee Kwon Jun; Jae Chang Kim

2013-06-01T23:59:59.000Z

10

Oxidation Of H2S To S By Air With Fe(III)-NTA As A Catalyst: Catalyst Degradation  

Science Journals Connector (OSTI)

The oxidation of H2S to S by air is represented by the overall reaction: $$ 2{{\\rm{H}}_2}{\\rm{S}} + {{\\rm{O}}_2} \\to 1/4{{\\rm{S}}_{{8^ \\downar...

Dian Chen; Ramunas J. Motekaitis…

1993-01-01T23:59:59.000Z

11

Improved quasi-unary nucleation model for binary H 2 S O 4 – H 2 O homogeneous nucleation  

Science Journals Connector (OSTI)

Aerosol nucleation events have been observed at a variety of locations worldwide and may have significant climatic and health implications. Binary homogeneous nucleation (BHN) of H 2 S O 4 and H 2 O is the foundation of recently proposed nucleation mechanisms involving additional species such as ammonia ions and organic compounds and it may dominate atmospheric nucleation under certain conditions. We have shown in previous work that H 2 S O 4 – H 2 O BHN can be treated as a quasi-unary nucleation (QUN) process involving H 2 S O 4 in equilibrium with H 2 O vapor and we have developed a self-consistent kinetic model for H 2 S O 4 – H 2 O nucleation. Here the QUN approach is improved and an analytical expression yielding H 2 S O 4 – H 2 O QUN rates is derived. Two independent measurements related to monomer hydration are used to constrain the equilibrium constants for this process which reduces a major source of uncertainty. It is also shown that the capillarity approximation may lead to a large error in the calculated Gibbs free energy change for the evaporation of H 2 S O 4 molecules from small H 2 S O 4 – H 2 O clusters which affects the accuracy of predicted BHN nucleation rates. The improved QUN model—taking into account the recently measured energetics of small clusters—is thermodynamically more robust. Moreover predicted QUN nucleation rates are in better agreement with available experimental data than rates calculated using classical H 2 S O 4 – H 2 O BHN theory.

Fangqun Yu

2007-01-01T23:59:59.000Z

12

Decay channels of core-excited H2S studied by synchrotron-radiation-excited photoelectron spectroscopy  

Science Journals Connector (OSTI)

The 2p(3a1) to 6a1 and 3b2 photoexcitation resonance of H2S has been studied using synchrotron-radiation-excited photoelectron spectroscopy. The overall shape of the measured photoelectron spectrum of H2S is found to be in close resemblance with the normal Auger-electron spectrum of HCl. The spectrum is assumed to result mainly from the Auger decay in the excited HS molecule taking place after the molecular dissociation of the excited H2S molecule. The finding is compared with the results of multiconfiguration self-consistent-field calculations [A.N. de Brito and H. Agren, following paper, Phys. Rev. A 45, 7953 (1992)].

H. Aksela; S. Aksela; A. Naves de Brito; G. M. Bancroft; K. H. Tan

1992-06-01T23:59:59.000Z

13

Energy exploitation of acid gas with high H2S content by means of a chemical looping combustion system  

Science Journals Connector (OSTI)

Abstract In gas and petroleum industry, the waste gas stream from the sweetening process of a sour natural gas stream is commonly referred as acid gas. Chemical Looping Combustion (CLC) technology has the potential to exploit the combustible fraction of acid gas, H2S, to produce energy obtaining a flue gas highly concentrated on CO2 and SO2, which can be cost-effectively separated for subsequent applications, such as sulfuric acid production. At the same time, a concentrated CO2 stream ready for storage is obtained. The resistance of oxygen carriers to sulfur becomes crucial when an acid gas is subjected to a CLC process since the H2S content can be very high. In this work, a total of 41 h of continuous operation with acid gas and H2S concentrations up to 20 vol.% has been carried out in a 500 Wth CLC unit with two oxygen carriers based on Cu (Cu14?Al) and Fe (Fe20?Al). The formation of copper sulfides and the SO2 emissions in the air reactor made the Cu14?Al material not adequate for the process. In contrast, excellent results were obtained during acid gas combustion with the Fe20?Al oxygen carrier. H2S was fully burnt to SO2 in the fuel reactor at all operating conditions, SO2 was never detected in the gas outlet stream of the air reactor, and iron sulfides were never formed even at H2S concentrations as high as 20 vol.%. Furthermore, it was found that a H2S content of 20 vol.% in the acid gas was high enough to turn the CLC process into an auto-thermal process. Based on these results, it can be concluded that the Fe-based materials prepared by impregnation are very adequate to exploit the energy potential of acid gas mixtures with CO2 capture.

F. García-Labiano; L.F. de Diego; P. Gayán; A. Abad; A. Cabello; J. Adánez; G. Sprachmann

2014-01-01T23:59:59.000Z

14

Simultaneous Adsorption of H2S and CO2 on Triamine-Grafted Pore-Expanded Mesoporous MCM-41 Silica  

Science Journals Connector (OSTI)

It is also being upgraded to biomethane and fed into the natural gas grid or in dedicated pipelines. ... The production of high-quality biomethane from biogas requires the separation of CO2, H2S, and water vapor to meet strict specifications. ...

Youssef Belmabkhout; Nicolas Heymans; Guy De Weireld; Abdelhamid Sayari

2011-02-04T23:59:59.000Z

15

AOI [3] High-Temperature Nano-Derived Micro-H2 and - H2S Sensors  

SciTech Connect (OSTI)

The emissions from coal-fired power plants remain a significant concern for air quality. This environmental challenge must be overcome by controlling the emission of sulfur dioxide (SO2) and hydrogen sulfide (H2S) throughout the entire coal combustion process. One of the processes which could specifically benefit from robust, low cost, and high temperature compatible gas sensors is the coal gasification process which converts coal and/or biomass into syngas. Hydrogen (H2), carbon monoxide (CO) and sulfur compounds make up 33%, 43% and 2% of syngas, respectively. Therefore, development of a high temperature (>500°C) chemical sensor for in-situ monitoring of H2, H2S and SO2 levels during coal gasification is strongly desired. The selective detection of SO2/H2S in the presence of H2, is a formidable task for a sensor designer. In order to ensure effective operation of these chemical sensors, the sensor system must inexpensively function within harsh temperature and chemical environment. Currently available sensing approaches, which are based on gas chromatography, electrochemistry, and IR-spectroscopy, do not satisfy the required cost and performance targets. This work focused on the development microsensors that can be applied to this application. In order to develop the high- temperature compatible microsensor, this work addressed various issues related to sensor stability, selectivity, and miniaturization. In the research project entitled “High-Temperature Nano-Derived Micro-H2 and -H2S Sensors”, the team worked to develop micro-scale, chemical sensors and sensor arrays composed of nano-derived, metal-oxide composite materials to detect gases like H2, SO2, and H2S within high-temperature environments (>500?C). The research was completed in collaboration with NexTech Materials, Ltd. (Lewis Center, Ohio). NexTech assisted in the testing of the sensors in syngas with contaminate levels of H2S. The idea of including nanomaterials as the sensing material within resistive-type chemical sensor platforms was to increase the sensitivity (as shown for room temperature applications). Unfortunately, nanomaterials are not stable at high temperatures due to sintering and coarsening processes that are driven by their high surface to volume ratio. Therefore, new hydrogen and sulfur selective nanomaterial systems with high selectivity and stability properties in the proposed harsh environment were investigated. Different nano-morphologies of zirconate, molybdate, and tungstate compounds were investigated. The fabrication of the microsensors consisted of the deposition of the selective nanomaterial systems over metal based interconnects on an inert substrate. This work utilized the chemi-resistive (resistive- type) microsensor architecture where the chemically and structurally stable, high temperature compatible electrodes were sputtered onto a ceramic substrate. The nanomaterial sensing systems were deposited over the electrodes using a lost mold method patterned by conventional optical lithography. The microsensor configuration with optimized nanomaterial system was tested and compared to a millimeter-size sensor e outcomes of this research will contribute to the economical application of sensor arrays for simultaneous sensing of H2, H2S, and SO2.

Perepezko, John; Lu-Steffes, Otto

2014-08-31T23:59:59.000Z

16

Microstructural and H2S sensitivity of CBD synthesized CdS thin film: Influence of cobalt doping  

Science Journals Connector (OSTI)

Abstract Micorstructural and H2S sensitivity of CdS thin film synthesized by chemical bath deposition (CBD) and influence of cobalt are discussed in the present work. X-ray diffraction (XRD) shows cubic structure with an average particle size of ~12.5 nm for CdS and ~15.2 nm for 5% CO:CdS. Selected area electron diffraction (SAED) pattern confirms the cubic structure and TEM shows an average particle size of ~16 nm for CdS. AFM shows enhanced surface roughness due to cobalt incorporation. RMS roughness ( R q ) increases from 7.35 nm to 8.02 nm after Co doping. Incorporation of Co was confirmed by EDX. Co doping increases sensitivity to H 2 S quite significantly from ~56% for CdS to ~72% for 5% Co : CdS at a low operating temperature of 100 °C. Such enhancement of sensitivity due to cobalt incorporation in CdS is reported for the first time to the best of our knowledge.

A. Mukherjee; M. Fu; P. Ghosh; P. Mitra

2015-01-01T23:59:59.000Z

17

Cu–Zn–Al mixed metal oxides derived from hydroxycarbonate precursors for H2S removal at low temperature  

Science Journals Connector (OSTI)

One series of Cu–Zn and two series of Cu–Zn–Al hydroxycarbonate precursors with varying metal molar ratios were prepared via co-precipitation or multi-precipitation method, and the mixed metal oxides obtained by calcination of the precursor materials were used as adsorbents for H2S removal in the range of 25–100 °C. The results of H2S adsorption tests showed that these mixed oxides, especially two series of Cu–Zn–Al mixed metal oxides exhibited markedly high breakthrough sulfur capacities (ranging from 4.4 to 25.7 g S/100 g-sorbent with increase of Cu/Zn molar ratio) at 40 °C. Incorporation Cu and/or Al decreased the mean crystalline sizes of ZnO and CuO species in the Cu–Zn and Cu–Zn–Al mixed metal oxide adsorbents by decreasing of mean crystalline sizes of hydroxycarbanate phases mainly including hydrozincite, aurichalcite and malachite, segregation of Al phase, etc. Higher breakthrough sulfur capacity of each adsorbent in two ternary series than that of the corresponding adsorbent in binary series should be ascribed to the enhancement of the dispersion of ZnO and/or CuO species with incorporation of aluminum, thereby increasing the overall rate of reaction between the adsorbent and H2S by reducing the thickness of potential sulfide shell on the outer layer of the oxide crystalline grains and increasing the area of the interface for the exchange of HS?/S2? and O2?. For each series of adsorbents, the breakthrough sulfur capacity increased with the increase of Cu/Zn molar ratio regardless of changes of the dispersion of CuO and/or ZnO. This phenomenon might be mainly attributed to faster rate of the lattice diffusion of HS?, S2? and O2? or exchange of HS?/S2? and O2? during the sulfidation of CuO than that during the sulfidation of ZnO due to less rearrangement of the anion lattice.

Dahao Jiang; Lianghu Su; Lei Ma; Nan Yao; Xiaoliang Xu; Haodong Tang; Xiaonian Li

2010-01-01T23:59:59.000Z

18

Comparative investigation on chemical looping combustion of coal-derived synthesis gas containing H2S over supported NiO oxygen carriers  

SciTech Connect (OSTI)

Chemical looping combustion (CLC) of simulated coal-derived synthesis gas was conducted with NiO oxygen carriers supported on SiO2, ZrO2, TiO2, and sepiolite. The effect of H2S on the performance of these samples for the CLC process was also evaluated. Five-cycle thermogravimetric analysis (TGA) tests at 800 #1;C indicated that all oxygen carriers had a stable performance at 800 #1;C, except NiO/SiO2. Full reduction/oxidation reactions of the oxygen carrier were obtained during the five-cycle test. It was found that support had a significant effect on reaction performance of NiO both in reduction and oxidation rates. The reduction reaction was significantly faster than the oxidation reaction for all oxygen carriers, while the oxidation reaction is fairly slow due to oxygen diffusion on NiO layers. The reaction profile was greatly affected by the presence of H2S, but there was no effect on the capacity due to the presence of H2S in synthesis gas. The presence of H2S decreased reduction reaction rates significantly, but oxidation rates of reduced samples increased. X-ray diffraction (XRD) data of the oxidized samples after a five-cycle test showed stable crystalline phases without any formation of sulfides or sulfites/sulfates. Increase in reaction temperature to 900 #1;C had a positive effect on the performance.

Ksepko, E.; Siriwardane, R.; Tian, H.; Simonyi, T.; Sciazko, M.

2010-01-01T23:59:59.000Z

19

Chlorobium limicola forma thiosulfatophilum: Biocatalyst in the Production of Sulfur and Organic Carbon from a Gas Stream Containing H2S and CO2  

Science Journals Connector (OSTI)

...process to desulfurization and CO2 fixation of gases containing acidic components...process to desulfurization and CO2 fixation of gases containing acidic components...Cusanovich. The source of H2S and CO2 acid gases was a lactate-degrad- ing...

Douglas J. Cork; Ruta Garunas; Ashfaq Sajjad

1983-03-01T23:59:59.000Z

20

Integrated Gasification Combined Cycle Dynamic Model: H2S Absorption/Stripping, Water?Gas Shift Reactors, and CO2 Absorption/Stripping  

Science Journals Connector (OSTI)

Integrated Gasification Combined Cycle Dynamic Model: H2S Absorption/Stripping, Water?Gas Shift Reactors, and CO2 Absorption/Stripping ... Future chemical plants may be required to have much higher flexibility and agility than existing process facilities in order to be able to handle new hybrid combinations of power and chemical units. ...

Patrick J. Robinson; William L. Luyben

2010-04-26T23:59:59.000Z

Note: This page contains sample records for the topic "n2 h2s hg" 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

M351 H2 (S. Zhang) 2.7,2.8,3.1 0. 2.7: 13-14, 21-25, 31, 33  

E-Print Network [OSTI]

M351 H2 (S. Zhang) 2.7,2.8,3.1 0. 2.7: 13-14, 21-25, 31, 33 1. (2.7:13) A thermometer is removed degrees. After one-half minute the thermometer reads 50 degrees. What is the reading of the thermometer

Zhang, Shangyou

22

Production of elemental sulfur and ammonium thiosulfate by the oxidation of H2S containing water vapor and ammonia over V/Zr-PILC catalysts  

Science Journals Connector (OSTI)

The catalytic oxidation of hydrogen sulfide in the presence of water and ammonia was studied over V2O5 supported on Zr-pillared clay catalysts (V/Zr-PILCs). The synthesized catalysts were examined using a variety of characterization techniques. A catalytic performance study using V/Zr-PILC catalysts showed that H2S was successfully converted to elemental sulfur and ammonium thiosulfate (ATS) without considerable emission of sulfur dioxide. The H2S conversion over V/Zr-PILCs increased with increasing the content of vanadia up to 6 wt.%. This superior catalytic performance might be related to the uniform dispersion of vanadia species on the Zr-PILC support.

Kanattukara Vijayan Bineesh; Moon-il Kim; Goo-Hwa Lee; Manickam Selvaraj; Kyu Hyun; Dae-Won Park

2012-01-01T23:59:59.000Z

23

3-D agricultural air quality modeling: Impacts of NH3/H2S gas–phase reactions and bi-directional exchange of NH3  

Science Journals Connector (OSTI)

Abstract Accurately simulating the transport and fate of reduced nitrogen (NHx = ammonia (NH3) + ammonium (NH4+))- and sulfur-containing compounds emitted from agricultural activities represents a major challenge in agricultural air quality modeling. In this study, the Community Multiscale Air Quality (CMAQ) modeling system is further developed and improved by implementing 22 ammonia (NH3)/hydrogen sulfide (H2S) related gas-phase reactions and adjusting a few key parameters (e.g., emission potential) for bi-directional exchange of NH3 fluxes. Several simulations are conducted over the eastern U.S. domain at a 12-km horizontal resolution for January and July 2002 to examine the impacts of those improved treatments on air quality. The 5th generation mesoscale model (MM5) and CMAQ predict an overall satisfactory and consistent performance with previous modeling studies, especially for 2-m temperature, 2-m relative humidity, ozone (O3), and fine particulate matter (PM2.5). High model biases exist for precipitation in July and also dry/wet depositions. The updated model treatments contribute to O3, NHx, and PM2.5 by up to 0.4 ppb, 1.0 ?g m?3, and 1.0 ?g m?3 in January, respectively, and reduce O3 by up to 0.8 ppb and contribute to \\{NHx\\} and PM2.5 by up to 1.2 and 1.1 ?g m?3 in July, respectively. The spatial distributions of O3 in both months and sulfur dioxide (SO2) in January are mainly affected by inline dry deposition velocity calculation. The spatial distributions of SO2 and sulfate (SO42?) in July are affected by both inline dry deposition velocity and NH3/H2S reactions. The variation trends of NH3, NHx, ammonium nitrate (NH4NO3), PM2.5 and total nitrogen (TN) are predominated by bi-directional exchange of NH3 fluxes. Uncertainties of NH3 emission potentials and empirical constants used in the bi-directional exchange scheme may significantly affect the concentrations of \\{NHx\\} and PM2.5, indicating that a more accurate and explicit treatment for those parameters should be considered in the future work.

Kai Wang; Yang Zhang

2014-01-01T23:59:59.000Z

24

Reduction of Hg(II) to Hg(0) by Magnetite. | EMSL  

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

of Hg(II) to Hg(0) by Magnetite. Reduction of Hg(II) to Hg(0) by Magnetite. Abstract: Mercury (Hg) is a highly toxic element, and its contamination of groundwater presents a...

25

Hg System Assembly and Testing Status  

E-Print Network [OSTI]

#12;2VRVS Meeting 8 Nov 2006 OAK RIDGE NATIONAL LABORATORY U. S. DEPARTMENT OF ENERGY Hg Drain & Spill Ports Completed Hg drain from cylinder Hg leak sump with float switch Hg spill extraction port #12;3VRVS Meeting 8 Nov 2006 OAK RIDGE NATIONAL LABORATORY U. S. DEPARTMENT OF ENERGY Local Hg Vapor Filters · Hg

McDonald, Kirk

26

Effect of Operating Conditions and H2S Presence on the Performance of CaMg0.1Mn0.9O3?? Perovskite Material in Chemical Looping Combustion (CLC)  

Science Journals Connector (OSTI)

Effect of Operating Conditions and H2S Presence on the Performance of CaMg0.1Mn0.9O3?? Perovskite Material in Chemical Looping Combustion (CLC) ... After the cyclone, particles fall down into a solids reservoir, which acts as a loop seal. ... Industrial & Engineering Chemistry Research (2009), 48 (11), 5542-5547 CODEN: IECRED; ISSN:0888-5885. ...

Arturo Cabello; Alberto Abad; Pilar Gayán; Luis F. de Diego; Francisco García-Labiano; Juan Adánez

2014-01-27T23:59:59.000Z

27

Simultaneous removal of H2S and COS using Zn-based solid sorbents in the bench-scale continuous hot gas desulfurization system integrated with a coal gasifier  

Science Journals Connector (OSTI)

A bench-scale continuous hot gas desulfurization system using Zn-based solid sorbents was developed to remove H2S and COS simultaneously in a 110 Nm3.../h of real coal-gasified syngas. The bench-scale unit, which...

Young Cheol Park; Sung-Ho Jo; Ho-Jung Ryu…

2012-12-01T23:59:59.000Z

28

Hg Delivery System Vacuum 25 Oct 2005  

E-Print Network [OSTI]

. S. DEPARTMENT OF ENERGY V. Graves 25 Oct 2005 MERIT Mtg at MIT Oct 17-19 · During Hg delivery system to both design and operations #12;3 OAK RIDGE NATIONAL LABORATORY U. S. DEPARTMENT OF ENERGY V. Graves 25 & return lines - Sump tank & all connecting ports - Hg cylinder & bellows Hg inlet Hg cylinder & Bellows

McDonald, Kirk

29

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

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

N2.1 and N2.2. Relative Standard Errors for Tables N2.1 and N2.2;" N2.1 and N2.2. Relative Standard Errors for Tables N2.1 and N2.2;" " Unit: Percents." " "," " "NAICS"," "," ","Residual","Distillate",,"LPG and",,"Coke"," " "Code(a)","Subsector and Industry","Total","Fuel Oil","Fuel Oil(b)","Natural Gas(c)","NGL(d)","Coal","and Breeze","Other(e)" ,,"Total United States" , 311,"Food",6,0,8,0,0,0,0,7 312,"Beverage and Tobacco Products",10,0,82,0,0,0,0,9 313,"Textile Mills",19,0,77,3,20,0,0,48 314,"Textile Product Mills",38,0,0,38,27,0,0,42

30

Characterization of BCl3/N-2 plasmas  

E-Print Network [OSTI]

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

Sia, S. F.

2003-08-15T23:59:59.000Z

31

MERIT Hg System Fabrication Status  

E-Print Network [OSTI]

LABORATORY U. S. DEPARTMENT OF ENERGY MC Friday Meeting 13 Jan 2006 Syringe Pump · Consists of 3 hydraulic cylinders, hydraulic pump, and manual controls · Awarded to Airline Hydraulics Corporation (AHC - Hg system cart - Magnet elevation beam · Bids currently being obtained from Oak Ridge & Princeton

McDonald, Kirk

32

MERIT Hg System Design Update  

E-Print Network [OSTI]

tank · Multiple Hg cylinder ports #12;4 OAK RIDGE NATIONAL LABORATORY U. S. DEPARTMENT OF ENERGY MERIT Princeton University Nov 17-18, 2005 #12;2 OAK RIDGE NATIONAL LABORATORY U. S. DEPARTMENT OF ENERGY MERIT distortion #12;3 OAK RIDGE NATIONAL LABORATORY U. S. DEPARTMENT OF ENERGY MERIT Collab. Mtg Nov 17-18, 2005

McDonald, Kirk

33

MERIT Hg System Final Design Review  

E-Print Network [OSTI]

MERIT Hg System Final Design Review Hg Target System Operations V.B. Graves P.T. Spampinato T Facility Constraints · No overhead lifting capability within tunnel · Modularity required - Component 2 (In- beam) · Baseplate & magnet will go in beam line prior to Hg system · Blocks under magnet end

McDonald, Kirk

34

The ${\\mathcal N}=2$ superconformal bootstrap  

E-Print Network [OSTI]

In this work we initiate the conformal bootstrap program for ${\\mathcal N}=2$ superconformal field theories in four dimensions. We promote an abstract operator-algebraic viewpoint in order to unify the description of Lagrangian and non-Lagrangian theories, and formulate various conjectures concerning the landscape of theories. We analyze in detail the four-point functions of flavor symmetry current multiplets and of ${\\mathcal N}=2$ chiral operators. For both correlation functions we review the solution of the superconformal Ward identities and describe their superconformal block decompositions. This provides the foundation for an extensive numerical analysis discussed in the second half of the paper. We find a large number of constraints for operator dimensions, OPE coefficients, and central charges that must hold for any ${\\mathcal N}=2$ superconformal field theory.

Christopher Beem; Madalena Lemos; Pedro Liendo; Leonardo Rastelli; Balt C. van Rees

2014-12-23T23:59:59.000Z

35

Crossed beam reaction of atomic carbon C ( 3 P j ) with hydrogen sulfide, H 2 S (X 1 A 1 ): Observation of the thioformyl radical, HCS (X 2 A?)  

Science Journals Connector (OSTI)

One of the simplest organosulfur reactions that between ground statecarbon atoms C ( 3 P j ) and hydrogen sulfide H 2 S (X 1 A 1 ) was studied at an average collision energy of 21.0 kJ? mol ?1 using the crossed molecular beams technique. The product angular distribution and time-of-flight spectra of m/e=45 ( HC 32 S ) were monitored. Forward-convolution fitting of our data yields an almost isotropic center-of-mass angular flux-distribution whereas the center-of-mass translational energy flux distribution peaks at about 50 kJ? mol ?1 indicating a tight exit transition state from the decomposing thiohydroxycarbene HCSH complex to the reaction products. The high energy cut-off of the translational energy flux distribution is consistent with the formation of the thioformyl radical HCS in its X 2 A electronic ground state. The first experimental verification of an existing thiohydroxycarbene intermediate and the rigorous assignment of the HCS radical product under single collision conditions explicitly suggest inclusion of the title reaction in chemical reaction networks of molecular clouds TMC-1 and OMC-1 the outflow of the carbon star IRC+10216 Shoemaker/Levy 9 impact-induced nonequilibrium sulfur chemistry in the Jovian atmosphere as well as combustion of sulfur containing coal.

R. I. Kaiser; W. Sun; A. G. Suits

1997-01-01T23:59:59.000Z

36

Target System Operations and Hg Handling  

E-Print Network [OSTI]

CERN June 19-20, 2006 #12;2 OAK RIDGE NATIONAL LABORATORY U. S. DEPARTMENT OF ENERGY Hg System Safety RIDGE NATIONAL LABORATORY U. S. DEPARTMENT OF ENERGY Hg System Safety Review 19-20 June 2006 Containment/vent ports will be soap- bubble checked Primary Enclosure Secondary Enclosure #12;4 OAK RIDGE NATIONAL

McDonald, Kirk

37

Microsoft Word - HgAcBr  

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

August 2013 August 2013 Quantification of the Mercury Adsorption Mechanism on Brominated Activated Carbon The primary anthropogenic source of mercury (Hg) emissions into the atmosphere is coal- fired power utilities. This work explores materials designed for Hg capture to be applied in the ductwork of a power plant to prevent Hg release into the atmosphere. Bench-scale com- bustion experiments have been carried out, in which sorbent materials were placed in a simulated flue gas stream doped with ppb levels of Hg. The sorbent surfaces were probed using x-ray absorption spectroscopy to determine the mechanism of Hg binding and to ultimately improve solvent design. The spectroscopy data was analyzed alongside results from density functional theory (DFT) for benchmarking so that DFT can be used as a

38

Three one-dimensional coordination polymers based on 1,1'-bis­(pyridin-4-ylmeth­yl)-2,2'-bi-1H-benzimidazole and HgX2 (X = Cl, Br and I)  

Science Journals Connector (OSTI)

The new ligand 1,1'-bis­(pyridin-4-ylmeth­yl)-2,2'-bi-1H-benzimidazole has been combined with HgX2 (X = Cl, Br and I) to create three one-dimensional coordination polymers. The three complexes have one-dimensional zigzag chains and the HgII centres are in a distorted tetra­hedral [HgX2N2] geometry in each case.

Li, A.-G.

2013-12-14T23:59:59.000Z

39

N2Solar | Open Energy Information  

Open Energy Info (EERE)

N2Solar N2Solar Jump to: navigation, search Name N2Solar LLC Address 2855 E. Robidoux Rd. Place Sandy, Utah Zip 84093 Sector Solar Product HOE Solar performance optics for PV, CSP, Desal and UV water treatment Year founded 2003 Number of employees 1-10 Phone number 801 608 3180 Coordinates 40.601751°, -111.811322° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":40.601751,"lon":-111.811322,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

40

Hg System Status V.B. Graves  

E-Print Network [OSTI]

· Hydraulic power unit (HPU) and syringe cylinders delivered to ORNL July 21 - Hg cylinder discharge piping cart until secondary containment received #12;3MC Friday Meeting4 Aug 2006 OAK RIDGE NATIONAL LABORATORY U. S. DEPARTMENT OF ENERGY HPU Setup · Hydraulic fluid fill and drain process developed using

McDonald, Kirk

Note: This page contains sample records for the topic "n2 h2s hg" 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

Duality in N=2 minimal model holography  

E-Print Network [OSTI]

Recently a duality between a family of \\mathcal{N}=2 supersymmetric higher spin theories on AdS3, and the 't Hooft like limit of a class of Kazama-Suzuki models (that are parametrised by N and k) was proposed. The higher spin theories can be described by a Chern-Simons theory based on the infinite-dimensional Lie algebra shs[\\mu], and under the duality, \\mu is to be identified with \\lambda=N/(N+k+1). Here we elucidate the structure of the (quantum) asymptotic symmetry algebra sW_{\\infty}[\\mu] for arbitrary \\mu and central charge c. In particular, we show that for each value of the central charge, there are generically four different values of \\mu that describe the same sW_{\\infty} algebra. Among other things this proves that the quantum symmetries on both sides of the duality agree; this equivalence does not just hold in the 't Hooft limit, but even at finite N and k.

Candu, Constantin

2012-01-01T23:59:59.000Z

42

Duality in N=2 minimal model holography  

E-Print Network [OSTI]

Recently a duality between a family of \\mathcal{N}=2 supersymmetric higher spin theories on AdS3, and the 't Hooft like limit of a class of Kazama-Suzuki models (that are parametrised by N and k) was proposed. The higher spin theories can be described by a Chern-Simons theory based on the infinite-dimensional Lie algebra shs[\\mu], and under the duality, \\mu is to be identified with \\lambda=N/(N+k+1). Here we elucidate the structure of the (quantum) asymptotic symmetry algebra sW_{\\infty}[\\mu] for arbitrary \\mu and central charge c. In particular, we show that for each value of the central charge, there are generically four different values of \\mu that describe the same sW_{\\infty} algebra. Among other things this proves that the quantum symmetries on both sides of the duality agree; this equivalence does not just hold in the 't Hooft limit, but even at finite N and k.

Constantin Candu; Matthias R. Gaberdiel

2012-07-27T23:59:59.000Z

43

Mechanism of terahertz photoconductivity in semimetallic HgTe/CdHgTe quantum wells  

SciTech Connect (OSTI)

Terahertz photoconductivity in magnetic fields in semimetallic HgTe/CdHgTe quantum wells has been studied. The main contribution to photoconductivity comes from a signal that appears as a result of electron-gas heating. It is shown that, with the cyclotron resonance conditions satisfied, the photoconductivity signal is composed of cyclotron-resonance and bolometric components. However, in this case too, the bolometric contribution predominates.

Vasilyev, Yu. B., E-mail: yu.vasilyev@mail.ioffe.ru [Russian Academy of Sciences, Ioffe Physical-Technical Institute (Russian Federation); Mikhailov, N. N. [Russian Academy of Sciences, Rzhanov Institute of Semiconductor Physics, Siberian Branch (Russian Federation); Gouider, F. [Institut fuer Angewandte Physik (Germany); Vasilyeva, G. Yu. [St. Petersburg State Polytechnic University (Russian Federation); Nachtwei, G. [Institut fuer Angewandte Physik (Germany)

2012-05-15T23:59:59.000Z

44

Sediment transport and Hg recovery in Lavaca Bay, as evaluated from radionuclide and Hg distributions  

SciTech Connect (OSTI)

Mercury was released in the late 1960s from a chloralkali facility managed by ALCOA and deposited into sediments of Lavaca Bay, TX. Sediments have recorded this event as a well-defined subsurface concentration maximum. Radionuclide, mercury, X-radiography, and grain size data from sediment cores taken in 1997 at 15 stations in Lavaca bay were used to assess sediment and Hg movements in the bay. Sediment accumulation rates were calculated from bomb fallout nuclide ({sup 137}Cs, {sup 239,240}Pu) peaks in 1963 and from the steady-state delivery of {sup 210}Pb from the atmosphere. Sedimentation rates are highest at near-shore sites near the ALCOA facility and generally decrease away from shore. Sedimentation rates in some areas are likely influenced by anthropogenic activities such as dredging. Particle reworking, as assessed from {sup 7}Be measurements, is generally restricted to the upper 2--7 cm of sediments. Numerical simulations of Hg profiles using measured sedimentation and mixing parameters indicate that at most sites high remnant mercury concentrations at 15--60 cm depth cannot supply substantial amounts of Hg to surface sediments. Assuming no future Hg supplies, Hg concentrations in surface sediments are predicted to decrease exponentially with a recovery half-time of 4 {+-} 2 years.

Santschi, P.H.; Allison, M.A.; Asbill, S.; Perlet, A.B. [Texas A and M Univ., Galveston, TX (United States)] [Texas A and M Univ., Galveston, TX (United States); Cappellino, S. [Parametrix, Inc., Houston, TX (United States)] [Parametrix, Inc., Houston, TX (United States); Dobbs, C.; McShea, L. [Aluminum Co. of America, Point Comfort, TX (United States)] [Aluminum Co. of America, Point Comfort, TX (United States)

1999-02-01T23:59:59.000Z

45

Seasonal variations in N2O emissions from central California  

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

Seasonal variations in N2O emissions from central California Seasonal variations in N2O emissions from central California Title Seasonal variations in N2O emissions from central California Publication Type Journal Article Year of Publication 2012 Authors Jeong, Seongeun, Chuanfeng Zhao, Arlyn E. Andrews, Edward J. Dlugokencky, Colm Sweeney, Laura Bianco, James M. Wilczak, and Marc L. Fischer Journal Geophysical Research Letters Volume 39 Issue 16 Keywords atmospheric transport, inverse modeling, nitrous oxide Abstract We estimate nitrous oxide (N2O) emissions from Central California for the period of December 2007 through November 2009 by comparing N2O mixing ratios measured at a tall tower (Walnut Grove, WGC) with transport model predictions based on two global a priori N2O emission models (EDGAR32 and EDGAR42). Atmospheric particle trajectories and surface footprints are computed using the Weather Research and Forecasting (WRF) and Stochastic Time-Inverted Lagrangian Transport (STILT) models. Regression analyses show that the slopes of predicted on measured N2O from both emission models are low, suggesting that actual N2O emissions are significantly higher than the EDGAR inventories for all seasons. Bayesian inverse analyses of regional N2O emissions show that posterior annual N2O emissions are larger than both EDGAR inventories by factors of 2.0 ± 0.4 (EDGAR32) and 2.1 ± 0.4 (EDGAR42) with seasonal variation ranging from 1.6 ± 0.3 to 2.5 ± 0.4 for an influence region of Central California within approximately 150 km of the tower. These results suggest that if the spatial distribution of N2O emissions in California follows the EDGAR emission models, then actual emissions are 2.7 ± 0.5 times greater than the current California emission inventory, and total N2O emissions account for 8.1 ± 1.4% of total greenhouse gas emissions from California.

46

Process of [sup 196]Hg enrichment  

DOE Patents [OSTI]

A simple rate equation model shows that by increasing the length of the photochemical reactor and/or by increasing the photon intensity in said reactor, the feedstock utilization of [sup 196]Hg will be increased. Two preferred embodiments of the present invention are described, namely (1) long reactors using long photochemical lamps and vapor filters; and (2) quartz reactors with external UV reflecting films. These embodiments have each been constructed and operated, demonstrating the enhanced utilization process dictated by the mathematical model (also provided).

Grossman, M.W.; Mellor, C.E.

1993-04-27T23:59:59.000Z

47

TECHNICAL REPORTS Continuous measurement of soil N2  

E-Print Network [OSTI]

.5 nmol mol-1 , equal to that of a tunable diode laser N2 O analyzer. The solar/wind hybrid power system and automated chamber system, powered by wind and solar, that can continuously measure soil N2 O emissions performed well during summer, but system failures increased in frequency in spring and fall, usually

Minnesota, University of

48

Unexpected Nondissociative Binding of N2O on Oxygen Vacancies...  

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

Nondissociative Binding of N2O on Oxygen Vacancies on a Rutile TiO2(110)-1×1 . Unexpected Nondissociative Binding of N2O on Oxygen Vacancies on a Rutile TiO2(110)-1×1 ....

49

Magnetism of HgSe:Fe  

Science Journals Connector (OSTI)

The perpendicular and parallel components of the magnetization of the mixed valence system Hg1-xFexSe in the strongly dilute limit (xmagnetic fields up to 20 T. In this interesting semimagnetic semiconductor the overall magnetization is caused simultaneously by Fe3+ (Brillouin paramagnet), Fe2+ (van Vleck paramagnet), and free electrons (diamagnetic de Haas-van Alphen effect). Using a torque magnetometer the various contributions with their anisotropy are individually determined. For very low iron content (xmagnetic moment perpendicular to the magnetic field when applying the field in a nonsymmetric direction of the crystal. Using recent theoretical results on the energy-level diagram of Fe2+ in the Td symmetry of a HgSe host lattice we deduce a spin-orbit level splitting of 2 meV from our experimental data. In contrast to higher concentration samples, both the Brillouin paramagnetism of Fe3+ and the van Vleck paramagnetism of Fe2+ can be attributed to the sum from individual Fe donors with no obvious magnetic interaction between them. Finally, we also have measured de Haas-van Alphen oscillations of the conduction-band electrons with amplitudes of the same order as the paramagnetic background. From the measured crystal-field-induced anisotropy in the magnetic moment we deduce a Fermi-surface anisotropy of about 7%.

U. Zeitler; A. Wittlin; J. C. Maan; W. Dobrowolski; A. Mycielski

1996-12-01T23:59:59.000Z

50

Hg Anomalies In Soils- A Geochemical Exploration Method For Geothermal  

Open Energy Info (EERE)

Hg Anomalies In Soils- A Geochemical Exploration Method For Geothermal Hg Anomalies In Soils- A Geochemical Exploration Method For Geothermal Areas Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Hg Anomalies In Soils- A Geochemical Exploration Method For Geothermal Areas Details Activities (5) Areas (5) Regions (0) Abstract: Hg contents of soils in geothermal areas in the western U.S. were measured and a three-fold distribution was observed: peak, aureole and background. Peak values (up to several 100 ppm Hg) occur in fumaroles of vapour-dominated systems, around hot springs, and in zones overlying steeply dipping, hot-water aquifers. Aureoic values (up to several 100 ppb Hg) are found in zones surrounding the peak areas and delineate areas with shallow geothermal convection. Background values vary between 7 and 40 ppb

51

A case study of mercury and methylmercury dynamics in a Hg-contaminated municipal wastewater treatment plant  

Science Journals Connector (OSTI)

A study of total Hg (Hg) and methylmercury (MeHg) was performed in a 40 mgd capacity municipal sewage treatment plant in which elemental Hg was used as ... the Hg seals with mechanical seals. A mass balance condu...

C. C. Gilmour; N. S. Bloom

1995-02-01T23:59:59.000Z

52

A Case Study of Mercury and Methylmercury Dynamics in a Hg-Contaminated Municipal Wastewater Treatment Plant  

Science Journals Connector (OSTI)

A study of total Hg (Hg) and methylmercury (MeHg) was performed in a 40 mgd capacity municipal sewage treatment plant in which elemental Hg was used as ... the Hg seals with mechanical seals. A mass balance condu...

C. C. Gilmour; N. S. Bloom

1995-01-01T23:59:59.000Z

53

Hg L3 XANES Study of Mercury Methylation in Shredded  

E-Print Network [OSTI]

,indicatingbioaccumulationofmercury.Plantsamples collected at this site were also grown in nutrient solution with 1 ppm HgCl2 under (1) aerobic conditions

54

U01HG004279 (D.M.M.), U01HG004261 (E.L.), U01HG004274 (S.H.), and U41HG004269 (L.S.). Awards  

E-Print Network [OSTI]

.T.N.), the Indiana Genomics Initiative (T.C.K.), H. Smith and the NIDDK genomics core laboratory (B.O.), NIH R01HG

55

The O2/N2 Ratio Gas Solubility Mystery  

Science Journals Connector (OSTI)

Oxygen (O2) and nitrogen (N2) are the two most abundant gases in the Earth’s atmosphere and have generally similar physical properties, yet O2 is twice as soluble in water as N2, a feature that may have physiological and other biological consequences. ... In addition, a sensible explanation for the difference in the aqueous solubilities of O2 and N2 would provide some insight into the factors determining gas solubility in water. ... The soly. of 408 gaseous compds. in water at 298 K has been correlated through equation (i), where the soly. is expressed as the Ostwald soly. ...

Rubin Battino; Paul G. Seybold

2011-10-20T23:59:59.000Z

56

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

SciTech Connect (OSTI)

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

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

2013-09-15T23:59:59.000Z

57

Evidence of stress?mediated Hg migration in Hg1?x Cd x Te  

Science Journals Connector (OSTI)

Photoemission results from some ?110? cleaved surfaces of Hg1?x Cd x Te indicate that the Fermi level is pinned suggesting that while the bulk of the material is p type the area stressed during cleavage has been converted to n type. Electrolyte electroreflectance (EER) measurement confirmed the n?type character of the cleaved surface and showed that the alloy composition x at the surface after cleavage is high (x=0.22) compared to the bulk value (x=0.185). The high x value associated with the n character indicates that under stress the Hg migrates at least partially via the formation of donor defects. The defect density is reflected in the EER linewidth.

P. M. Raccah; U. Lee; J. A. Silberman; W. E. Spicer; J. A. Wilson

1983-01-01T23:59:59.000Z

58

Growth of superconducting Hg-1212 very-thin films  

E-Print Network [OSTI]

High quality epitaxial HgBa2CaCu2O6+delta (Hg- High 1212) films with thickness less than 100 nm have been successfully synthesized using cation-exchange process. The films show the superconducting transition up to similar to 118 K which is close...

Wu, Judy; Xie, Y. Y.; Kang, B. W.; Gapud, A. A.; Aytug, T.; Fang, L.

1999-06-01T23:59:59.000Z

59

N=2 Super Boussinesq Hierarchy: Lax Pairs and Conservation Laws  

E-Print Network [OSTI]

We study the integrability properties of the one-parameter family of $N=2$ super Boussinesq equations obtained earlier by two of us (E.I. \\& S.K., Phys. Lett. B 291 (1992) 63) as a hamiltonian flow on the $N=2$ super-$W_3$ algebra. We show that it admits nontrivial higher order conserved quantities and hence gives rise to integrable hierarchies only for three values of the involved parameter, $\\alpha=-2,\\;-1/2,\\;5/2$. We find that for the case $\\alpha = -1/2$ there exists a Lax pair formulation in terms of local $N=2$ pseudo-differential operators, while for $\\alpha = -2$ the associated equation turns out to be bi-hamiltonian.

S. Bellucci; E. Ivanov; S. Krivonos; A. Pichugin

1993-05-18T23:59:59.000Z

60

Characteristics of atmospheric-pressure non-thermal N2 and N2/O2 gas mixture plasma jet  

Science Journals Connector (OSTI)

An atmospheric-pressure non-thermal plasma jet driven by high frequency alternating current and operating on N2 and N2/O2 gas mixture is investigated. The plasma jet can reach 55?mm in length at a gas flow rate of 2500?l/h. The gas temperature at a distance of 4?mm from the nozzle is close to room temperature. Optical emission spectroscopy is employed to investigate the important plasma parameters such as the excited species rotational temperature vibrational temperature and excitation temperature under different discharge conditions. The results show that the plasma source operates under non-equilibrium conditions. The absolute irradiance intensity of the vibrational band N2(C-B) in the active region is measured. Taking into account the irradiance intensity of N2(C-B 0-0) and N2(B-X 0-0) as well as measured current the electron density which is determined by considering direct and step-wise electron impact excitation of nitrogen emission reaches a maximum value of 5.6?×?1020/m3.

Dezhi Xiao; Cheng Cheng; Jie Shen; Yan Lan; Hongbing Xie; Xingsheng Shu; Jiangang Li; Paul K. Chu

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "n2 h2s hg" 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

Paleomagnetic Secular Variation (PSV), 137Cs, and Hg dating techniques  

E-Print Network [OSTI]

Portland State University Department of Geology #12;Hg-Mercury contamination dating http fission of Uranium-235 · Due to nuclear weapons testing · Highly water soluble (spreads quickly) · Half

Fountain, Andrew G.

62

Nonlocality from N>2 independent single-photon emitters  

SciTech Connect (OSTI)

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

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

2010-09-15T23:59:59.000Z

63

Calculations of the electronic states of the HgI and HgTe molecules by the SCF-X?-SW method  

Science Journals Connector (OSTI)

The SCF-X?-SW method was used to study the electronic structure and calculate the spectroscopic constants of the HgI and HgTe molecules in the ground and excited electronic states.

V. M. Kovba; E. A. Pazyuk

2006-08-01T23:59:59.000Z

64

Mercury nonstoichiometry of the Hg1-xBa2CuO4+ superconductor and the P(Hg)-P(O2)-T phase diagram of the Hg-Ba-Cu-O system.  

E-Print Network [OSTI]

1 Mercury nonstoichiometry of the Hg1-xBa2CuO4+ superconductor and the P(Hg)-P(O2)-T phase diagram-nonstoichiometry and exists in a certain P(Hg), P(O2) and T range. Mercury nonstoichiometry of Hg-1201 was investigated in the 923 T 1095 K; 2.0 P(Hg) 8.4 atm; 0.09 P(O2) 0.86 atm ranges. It was found that the mercury

Rudnyi, Evgenii B.

65

N=2 gauge theories and degenerate fields of Toda theory  

SciTech Connect (OSTI)

We discuss the correspondence between degenerate fields of the W{sub N} algebra and punctures of Gaiotto's description of the Seiberg-Witten curve of N=2 superconformal gauge theories. Namely, we find that the type of degenerate fields of the W{sub N} algebra, with null states at level one, is classified by Young diagrams with N boxes, and that the singular behavior of the Seiberg-Witten curve near the puncture agrees with that of W{sub N} generators. We also find how to translate mass parameters of the gauge theory to the momenta of the Toda theory.

Kanno, Shoichi; Matsuo, Yutaka; Shiba, Shotaro [Department of Physics, Faculty of Science, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033 (Japan); Tachikawa, Yuji [School of Natural Sciences, Institute for Advanced Study, Princeton, New Jersey 08540 (United States)

2010-02-15T23:59:59.000Z

66

Energy loss rate of a charged particle in HgTe/(HgTe, CdTe) quantum wells  

SciTech Connect (OSTI)

The energy loss rate (ELR) of a charged particle in a HgTe/(HgTe, CdTe) quantum well is investigated. We consider scattering of a charged particle by the bulk insulating states in this type of topological insulator. It is found that the ELR characteristics due to the intraband excitation have a linear energy dependence while those due to interband excitation depend on the energy exponentially. An interesting quantitative result is that for a large range of the incident energy, the mean inelastic scattering rate is around a few terahertz.

Chen, Qinjun; Sin Ang, Yee [School of Physics, University of Wollongong, New South Wales 2522 (Australia)] [School of Physics, University of Wollongong, New South Wales 2522 (Australia); Wang, Xiaolin [Institute for Superconducting and Electronic Materials, University of Wollongong, New South Wales 2522 (Australia)] [Institute for Superconducting and Electronic Materials, University of Wollongong, New South Wales 2522 (Australia); Lewis, R. A.; Zhang, Chao [School of Physics, University of Wollongong, New South Wales 2522 (Australia) [School of Physics, University of Wollongong, New South Wales 2522 (Australia); Institute for Superconducting and Electronic Materials, University of Wollongong, New South Wales 2522 (Australia)

2013-11-04T23:59:59.000Z

67

Mother-embryo isotope (15 C) fractionation and mercury (Hg)  

E-Print Network [OSTI]

used to investigate the trophic ecology, foraging habitats and heavy metal contamination). Consequently, Hg concentrations are important to monitor because of the toxicity of this metal. In order of this element in muscle and liver. Key words: sharks; stable isotopes; trace metal; maternal influence. hal

Paris-Sud XI, Université de

68

Multi-instanton calculus in N=2 supersymmetric gauge theory  

Science Journals Connector (OSTI)

The Seiberg-Witten solution of N=2 supersymmetric SU(2) gauge theory may be viewed as a prediction for the infinite family of constants {Fn} measuring the n-instanton contribution to the prepotential F. Here we examine the instanton physics directly, in particular the contribution of the general self-dual solution of topological charge n constructed by Atiyah, Drinfeld, Hitchin, and Manin (ADHM). In both the bosonic and supersymmetric cases, we determine both the large- and short-distance behavior of all the fields in this background. This allows us to construct the exact classical interaction between n ADHM (super)instantons mediated by the adjoint Higgs bosons. We calculate the one- and two-instanton contributions to the low-energy Seiberg-Witten effective action and find precise agreement with their predicted values of F1 and F2.

Nicholas Dorey; Valentin V. Khoze; Michael P. Mattis

1996-08-15T23:59:59.000Z

69

Neutrino parameters and the $N_2$-dominated scenario of leptogenesis  

E-Print Network [OSTI]

We briefly review the main aspects of leptogenesis, describing both the unflavoured and the flavoured versions of the $N_2$-dominated scenario. A study of the success rates of both classes of models has been carried out. We comment on these results and discuss corrective effects to this simplest scenario. Focusing on the flavoured case, we consider the conditions required by strong thermal leptogenesis, where the final asymmetry is fully independent of the initial conditions. Barring strong cancellations in the seesaw formula and in the flavoured decay parameters, we show that strong thermal leptogenesis favours a lightest neutrino mass $m_1\\gtrsim10\\,\\mbox{meV}$ for normal ordering (NO) and $m_1\\gtrsim 3\\,\\mbox{meV}$ for inverted ordering (IO). Finally, we briefly comment on the power of absolute neutrino mass scale experiments to either support or severely corner strong thermal leptogenesis.

Michele Re Fiorentin; Sophie E. King

2014-05-09T23:59:59.000Z

70

On-line method of determining utilization factor in Hg-196 photochemical separation process  

DOE Patents [OSTI]

The present invention is directed to a method for determining the utilization factor [U] in a photochemical mercury enrichment process (.sup.196 Hg) by measuring relative .sup.196 Hg densities using absorption spectroscopy.

Grossman, Mark W. (Belmont, MA); Moskowitz, Philip E. (Peabody, MA)

1992-01-01T23:59:59.000Z

71

Offsetting the radiative benefit of ocean iron fertilization by enhancing N2O emissions  

E-Print Network [OSTI]

from the atmospheric CO2 reduction significantly, because N2O is a much more powerful greenhouse gas

Gruber, Nicolas

72

Characterization of isothermal vapor phase epitaxial (Hg,Cd)Te  

Science Journals Connector (OSTI)

We report on the characterization of mercury cadmium telluride (Hg 1?x Cd x Te) film grown by the isothermal vapor phase epitaxial method (ISOVPE) and on the surface conversion of bulk Hg 1?xCd x Te to larger bandgap material. The crystal perfection is evaluated using defect etching electron beam and electrolyte electroreflectance (EBER and EER) and Rutherford backscattering spectrometry (RBS). Hall measurements are used to measure carrier densities and mobilities. Surface concentrations and concentration profiles are measured for the ISOVPE grown layers by transmission Fourier transform infrared spectroscopy (FTIR) and electron?probe microanalysis (EPMA) to establish quantitative informations about composition control. Metal–insulator?semiconductor (MIS) structures were made and the properties important to device performance such as compositional uniformity storage time and carrier concentration are measured. The ISOVPE layers are compared in quality to films grown by other methods and show promise for MIS devices.

S. B. Lee; L. K. Magel; M. F. S. Tang; D. A. Stevenson; J. H. Tregilgas; M. W. Goodwin; R. L. Strong

1990-01-01T23:59:59.000Z

73

Anthropogenic and Natural Emissions of Mercury (Hg) in the northeastern United Jeffrey MacAdam Sigler  

E-Print Network [OSTI]

Abstract Anthropogenic and Natural Emissions of Mercury (Hg) in the northeastern United States impact may depend on the emission rate. Anthropogenic Hg emissions in the United States are poorly characterized. Natural Hg emissions are poorly understood worldwide, due to lack of data or measurement systems

Lee, Xuhui

74

A vareity of Hg capture solutions are available  

SciTech Connect (OSTI)

While vacating the Clean Air Mercury Rule (CAMR) has postponed implementation of capturing mercury emitted by coal-fired power plants improvements in ways to capture and monitor mercury have continued. One method of enhancing Hg capture from FGD and SCR is to treat the coal by adding a halogen, such as calcium bromide in Alstom's KNX process prior to combustion. Power plants without FGD usually use sorbent injection, mostly an activated carbon, upstream of a particulate control device. 1 fig.

Blankinship, S.

2009-06-15T23:59:59.000Z

75

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

E-Print Network [OSTI]

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

Seitzinger, Sybil

76

Discovery of HgCu-bearing metal-sulfide assemblages in a primitive H-3 chondrite: Towards a new insight in early solar system processes  

E-Print Network [OSTI]

Mercury (Hg) is the most volatile non-gaseous element. The Hg solar abundance (Lodders, 2003; Lodders et

Ma, Chi

77

Synthesis and Optical Properties of NuTaN2: Potential Solar Cell Applications  

SciTech Connect (OSTI)

Layered CuTaN2 was synthesized by an ion exchange reaction of CuI and NaTaN2 as previously reported. Based on the results of EDX analysis, the Cu:Ta ratio of the CuTaN2 sample was 1:1 within the overall errors when examining powders of +/-10% and no Na was detected. The crystal structure and thermal stability of CuTaN2 was accurately determined by Rietveld analysis of the powder X-ray Diffraction profile and by TGA analysis, respectively. CuTaN2 crystallizes in a rhombohedral structure with space group R-3mH as shown in [figure 1]. CuTaN2 possesses a band gap of 1.53(x) eV, which is in reasonable agreement with density functional theory calculations of Cu containing nitrides. Similar materials may be even better suited for solar cell application.

Yang, M.; Zakutayev, A.; Zhang, X.; Ginley, D.; DiSalvo, F.

2013-01-01T23:59:59.000Z

78

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

E-Print Network [OSTI]

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

Rampersad, Marilyn Vena

2007-04-25T23:59:59.000Z

79

Unique Thylakoid Membrane Architecture of aUnicellular N2-Fixing...  

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

intracellular transport and trafficking. Citation: Liberton ML, JR Austin, RH Berg, and HB Pakrasi.2011."Unique Thylakoid Membrane Architecture of aUnicellular N2-Fixing...

80

Generalised CP and $\\Delta (6n^2)$ Family Symmetry in Semi-Direct Models of Leptons  

E-Print Network [OSTI]

We perform a detailed analysis of $\\Delta (6n^2)$ family symmetry combined with a generalised CP symmetry in the lepton sector, breaking to different remnant symmetries $G_{\

Ding, Gui-Jun; Neder, Thomas

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "n2 h2s hg" 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

Microsoft PowerPoint - AWMA2006_Hg Panel_FEELEY.ppt  

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

A&WMA's A&WMA's 99 th Annual Conference & Exhibition Hg Control Technology Panel June 23, 2006 New Orleans, Louisiana Thomas J. Feeley, III thomas.feeley@netl.doe.gov National Energy Technology Laboratory AWMA2006_Hg Panel_FEELEY Outline * Background * Phase II project update/Phase III project descriptions * BOP and related technical issues * Preliminary economic assessment * Byproduct-Hg issues/potential economic impacts * Conclusion AWMA2006_Hg Panel_FEELEY Mercury Control Technology Program Performance/Cost Objectives * Have technologies ready for commercial demonstration by: * 2007 that can reduce "uncontrolled" Hg emissions by 50-70% * 2010 for all coals that can reduce "uncontrolled" Hg emissions by +90% * Reduce cost by 25-50% compared to baseline cost

82

HG ADSORBER (ITEM 7) ATTACHED TO SIDE WALL OF CONTAINMENT BOX  

E-Print Network [OSTI]

1 NOTE: HG ADSORBER (ITEM 7) ATTACHED TO SIDE WALL OF CONTAINMENT BOX WITH SS STRAPS. FLEX TUBING CONNECTS ADSORBER TO SUMP TANK CHKVALVE AND LID-MOUNTED FILTER 5 3 2 7 4 6 1 --- PRIMARY CONTAINMENT ASSY SHCS - 5/8-11 x 1.00 N/A 6 1 hg adsorber hjt --- KOBY HG ADSORBER, MF-2JKCB, PROVIDED BY PRINCETON N

McDonald, Kirk

83

Uncertainties Associated with Theoretically Calculated N2-Broadened Half-Widths of H2O Lines  

E-Print Network [OSTI]

to be calculated theoretically. The accuracy of these calculated values depends on many factors such as the line-shape1 Uncertainties Associated with Theoretically Calculated N2- Broadened Half-Widths of H2O Lines Q-offs used in the theoretical calculations, we have carried out extensive numerical calculations of the N2

Gamache, Robert R.

84

Raman excitation profiles for the (n1, n2) assignment in carbon nanotubes  

E-Print Network [OSTI]

Raman excitation profiles for the (n1, n2) assignment in carbon nanotubes H. Telg , J. Maultzsch indices n1 and n2 in semiconducting and metallic nanotubes was performed comparing resonance Raman nanotube families. Ever since the discovery of how to keep isolated nanotubes from rebundeling in solu

Nabben, Reinhard

85

Impact of N2 dilution on combustion and emissions in a spark ignition CNG engine  

Science Journals Connector (OSTI)

Abstract In order to reduce \\{NOx\\} (nitrogen oxides) emissions, N2 (nitrogen) was introduced as dilution gas to dilute mixture with a specially-designed injection device. The impacts of varying N2 DR (dilution ratio) on the combustion and the exhaust emissions were investigated, including engine heat release rate, indicator diagram, NOx, CO (carbon monoxide), THC (total hydrocarbon) emissions and so on. For this study, a modified 6.6 L CNG (compressed natural gas) engine was tested and N2 was injected into the end of intake manifold by a specially-designed device. The results showed that N2 dilution has a significant influence on the combustion and the exhaust emissions. With the rise of N2 DR, the maximum of pressure in cylinder and the maximum of heat release rate exhibited decrease trends, the centre of heat release curve showed a moving backward tendency. Higher N2 DR exhibited lower \\{NOx\\} (17–81%) emissions, but higher emissions of THC (3–78%) and CO (1–28%). The change of BSFC (brake specific fuel consumption) can be ignored with N2 DR no more than 167%. Satisfactory results can be obtained, with lower \\{NOx\\} (31%) emissions, lower BSFC (0.5%), and relatively higher THC (6%) and CO (1%) emissions, when N2 DR is 67%.

Zhongshu Wang; Hongbin Zuo; Zhongchang Liu; Weifeng Li; Huili Dou

2014-01-01T23:59:59.000Z

86

A New High-Resolution N2O Emission Inventory for China in 2008  

Science Journals Connector (OSTI)

Per-capita and per-GDP N2O emissions increase gradually with an increase in the urban population fraction from 0.3 to 0.9 among 2884 counties, and N2O emission density increases with urban expansion. ... (56-58) This decrease of demand would eventually reduce some of the food and energy supplies in these regions. ...

Feng Zhou; Ziyin Shang; Philippe Ciais; Shu Tao; Shilong Piao; Peter Raymond; Canfei He; Bengang Li; Rong Wang; Xuhui Wang; Shushi Peng; Zhenzhong Zeng; Han Chen; Na Ying; Xikang Hou; Peng Xu

2014-06-25T23:59:59.000Z

87

The substitution reaction of (CNC)Fe?2N2 with CO  

Science Journals Connector (OSTI)

In the first SN2 substitution step, C1-O1 molecule replaces the axial N3-N4 of (CNC)Fe(N2)_N2, by attacking Fe center from the opposite direction of N3-N4. In the transition state of SN2TS1, the Fe-N3 bond has be...

Hongyan Liu; Shuangshuang Liu; Xiang Zhang

2013-06-01T23:59:59.000Z

88

15N2 formation and fast oxygen isotope exchange during pulsed...  

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

N2 formation and fast oxygen isotope exchange during pulsed 15N18O exposure of MnOxCeO2. 15N2 formation and fast oxygen isotope exchange during pulsed 15N18O exposure of MnOx...

89

Safety Bulletin 2005-08: Safe Management of Mercury (Hg)  

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

SAFETY & HEALTH SAFETY & HEALTH SAFETY & HEALTH BULLETIN Assistant Secretary for Environment, Safety & Health * U.S. Department of Energy * Washington, DC 20585 Safe Management of Mercury (Hg) DOE/EH-0697 Issue No. 2005-08 June 2005 PURPOSE This Bulletin provides information on a safety concern that may impact operations at Department of Energy (DOE) facilities. Specifically, the concern is the safe handling of mercury and mercury compounds. BACKGROUND Mercury is found in small amounts in thermometers, manometers, and barometers and in larger quantities at DOE facilities - ranging from amounts found in scientific equipment to tons in remediation waste at burial sites and hundreds of tons at the DOE stockpile storage facility in Oak Ridge.

90

nTOF11 Hg System Design Tony Gabriel, Phil Spampinato  

E-Print Network [OSTI]

Presented at Berkeley Collaboration Meeting · Hg piston pump actuated by dual hydraulic cylinders · Hg delivery system size reduction - Target cart design optimization - Magnet base support #12;6 OAK RIDGE · Reduced length · Changed sump design · Refined cart details #12;7 OAK RIDGE NATIONAL LABORATORY U. S

McDonald, Kirk

91

A measurement of the neutron to 199Hg magnetic moment ratio  

E-Print Network [OSTI]

The neutron gyromagnetic ratio has been measured relative to that of the 199Hg atom with an uncertainty of 0.8 ppm. We employed an apparatus where ultracold neutrons and mercury atoms are stored in the same volume and report the result $\\gamma_{\\rm n}/\\gamma_{\\rm Hg} = 3.8424574(30)$.

Afach, S; Ban, G; Bison, G; Bodek, K; Burghoff, M; Chowdhuri, Z; Daum, M; Fertl, M; Franke, B; Geltenbort, P; Green, K; van der Grinten, M G D; Grujic, Z; Harris, P G; Heil, W; Hélaine, V; Henneck, R; Horras, M; Iaydjiev, P; Ivanov, S N; Kasprzak, M; Kermaïdic, Y; Kirch, K; Knecht, A; Koch, H -C; Krempel, J; Ku?niak, M; Lauss, B; Lefort, T; Lemière, Y; Mtchedlishvili, A; Naviliat-Cuncic, O; Pendlebury, J M; Perkowski, M; Pierre, E; Piegsa, F M; Pignol, G; Prashanth, P N; Quéméner, G; Rebreyend, D; Ries, D; Roccia, S; Schmidt-Wellenburg, P; Schnabel, A; Severijns, N; Shiers, D; Smith, K F; Voigt, J; Weis, A

2014-01-01T23:59:59.000Z

92

INELASTIC NEUTRON SCATTERING SELECTION RULES OF 03B1 HgI2 M. SIESKIND  

E-Print Network [OSTI]

899 INELASTIC NEUTRON SCATTERING SELECTION RULES OF 03B1 HgI2 M. SIESKIND Laboratoire de The inelastic neutron scattering selection rules of 03B1 HgI2 in the directions 0394, 03A3 and 039B are derived Abstracts 63.20D Introduction. - Inelastic neutron scattering is a powerful technique for the determination

Boyer, Edmond

93

Pb(II) and Hg(II) binding to $de$ $novo$ designed proteins studied by $^{204m}$Pb- and $^{199m}$Hg-Perturbed Angular Correlation of $\\gamma$-rays (PAC) spectroscopy Clues to heavy metal toxicity  

E-Print Network [OSTI]

Pb(II) and Hg(II) binding to $de$ $novo$ designed proteins studied by $^{204m}$Pb- and $^{199m}$Hg-Perturbed Angular Correlation of $\\gamma$-rays (PAC) spectroscopy

CERN. Geneva. ISOLDE and Neutron Time-of-Flight Experiments Committee; Correia, J G

2006-01-01T23:59:59.000Z

94

Multi-Instanton Measure from Recursion Relations in N = 2 Supersymmetric Yang-Mills Theory  

Science Journals Connector (OSTI)

By using the recursion relations found in the framework of N = 2 Super Yang-Mills theory with gauge group SU(2), we reconstruct the structure of the instanton moduli space and its volume form for all winding numbers.

Marco Matone

2001-01-01T23:59:59.000Z

95

Electronic structure calculations of small Al n (n=2–8) clusters  

Science Journals Connector (OSTI)

The electronic states of small Al n (n...=2–8) clusters have been calculated with a relativistic ab-initio MO-LCAO Dirac-Fock-Slater method using numerical atomic DFS wave-funct...

T. Bastug; W. D. Sepp; B. Fricke…

1992-01-01T23:59:59.000Z

96

External Electric Field Catalyzed N2O Decomposition on Mn-Embedded Graphene  

Science Journals Connector (OSTI)

External Electric Field Catalyzed N2O Decomposition on Mn-Embedded Graphene ... Key Laboratory of Automobile Materials, Ministry of Education, and Department of Materials Science and Engineering, Jilin University, Changchun 130022, China ...

E. H. Song; J. M. Yan; J. S. Lian; Q. Jiang

2012-09-05T23:59:59.000Z

97

Phase separation, density fluctuation, and critical dynamics of N2 in aerogel  

Science Journals Connector (OSTI)

Light scattering was used to study N2 confined in aerogel. We find evidence of liquid-vapor phase separation that terminates at a critical point. Whereas the width of the coexistence curves is substantialy reduced relative to bulk N2, the shape of the coexistence curve is similar to that found for the bulk. Photon correlation spectroscopy shows that the density fluctuations decay algebraically in time, a result consistent with the random-field Ising model.

A. P. Y. Wong; S. B. Kim; W. I. Goldburg; M. H. W. Chan

1993-02-15T23:59:59.000Z

98

Mercury (Hg) mineral evolution: A mineralogical record of supercontinent assembly, changing ocean geochemistry, and the emerging terrestrial biosphere  

Science Journals Connector (OSTI)

...Almaden district (primary mineralization 427-380 Ma) led to at least one additional pulse of hydrothermal Hg...chlor-alkali industry; and a new generation of compact fluorescent light bulbs. Burning of Hg-enriched coal and petroleum adds...

Robert M. Hazen; Joshua Golden; Robert T. Downs; Grethe Hystad; Edward S. Grew; David Azzolini; Dimitri A. Sverjensky

99

Angle-resolved photoemission spectroscopy study of HgBa[subscript 2]CuO[subscript 4+?  

E-Print Network [OSTI]

HgBa[subscript 2]CuO[subscript 4+?]. (Hg1201) has been shown to be a model cuprate for scattering, optical, and transport experiments, but angle-resolved photoemission spectroscopy (ARPES) data are still lacking owing to ...

Chan, M. K.

100

Relative importance of organic coatings for the heterogeneous hydrolysis of N2O5 during summer in Europe  

E-Print Network [OSTI]

coatings, formed via gas-to- particle conversion on aqueous aerosols, to N2O5 hydrolysis on localRelative importance of organic coatings for the heterogeneous hydrolysis of N2O5 during summer suppress heterogeneous N2O5 hydrolysis. In this study we investigated the relative importance of organic

Riemer, Nicole

Note: This page contains sample records for the topic "n2 h2s hg" 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

Shape coexistence in {sup 180}Hg studied through the {beta} decay of {sup 180}Tl  

SciTech Connect (OSTI)

The {beta}{sup +}/EC decay of {sup 180}Tl and excited states in the daughter nucleus {sup 180}Hg have been investigated at the CERN On-Line Isotope Mass Separator (ISOLDE) facility. Many new low-lying energy levels were observed in {sup 180}Hg, of which the most significant are the 0{sub 2}{sup +} at 419.6 keV and the 2{sub 2}{sup +} at 601.3 keV. The former is the bandhead of an excited band in {sup 180}Hg assumed originally to be of prolate nature. From the {beta} feeding to the different states in {sup 180}Hg, the ground-state spin of {sup 180}Tl was deduced to be (4{sup -},5{sup -}).

Elseviers, J.; Bree, N.; Diriken, J.; Huyse, M.; Ivanov, O.; Van den Bergh, P.; Van Duppen, P. [Instituut voor Kern- en Stralingsfysica, K.U. Leuven, University of Leuven, BE-3001 Leuven (Belgium); Andreyev, A. N. [Instituut voor Kern- en Stralingsfysica, K.U. Leuven, University of Leuven, BE-3001 Leuven (Belgium); School of Engineering and Science, University of the West of Scotland, Paisley, PA1 2BE, UK and the Scottish Universities Physics Alliance (SUPA) (United Kingdom); Antalic, S. [Department of Nuclear Physics and Biophysics, Comenius University, SK-84248 Bratislava (Slovakia); Barzakh, A.; Fedorov, D. [Petersburg Nuclear Physics Institute, RU-188350 Gatchina (Russian Federation); Cocolios, T. E.; Seliverstov, M. [Instituut voor Kern- en Stralingsfysica, K.U. Leuven, University of Leuven, BE-3001 Leuven (Belgium); ISOLDE,CERN, CH-1211 Geneve 23 (Switzerland); Comas, V. F.; Heredia, J. A. [Gesellschaft fuer Schwerionenforschung, Planckstrasse 1, DE-64291 Darmstadt (Germany); Fedosseyev, V. N.; Marsh, B. A. [EN Department, CERN, CH-1211 Geneve 23 (Switzerland); Franchoo, S. [Institut de Physique Nucleaire, IN2P3-CNRS/Universite Paris-Sud, FR-91406 Orsay Cedex (France); Koester, U. [Institut Laue Langevin, 6 rue Jules Horowitz, FR-38042 Grenoble Cedex 9 (France); Page, R. D. [Department of Physics, Oliver Lodge Laboratory, University of Liverpool, Liverpool L69 7ZE (United Kingdom)

2011-09-15T23:59:59.000Z

102

Combined SIMS, AES and XPS Study of CdxHg1-xTe  

Science Journals Connector (OSTI)

The ternary compound CdxHg1_xTe is of great importance in infrared technology. The band gap of this material depends critically on the concentration x. Therefore, a detailed knowledge of the surface and bulk comp...

O. Ganschow; H. M. Nitz; L. Wiedmann…

1979-01-01T23:59:59.000Z

103

Mercury (Hg) and methyl mercury (MMHg) bioaccumulation in three fish species (sea food) from Persian Gulf  

Science Journals Connector (OSTI)

In this study, mercury (Hg) and methyl mercury (MMHg) were determined in three fish species including benthic, benthopelagic and pelagic fish from Arvand river, northwest of Persian Gulf. Mercury and methyl mercu...

Sajad Abdolvand; Sahar Kayedinejad Esfahani…

2014-09-01T23:59:59.000Z

104

Relativistic doppler effect in199Hg+ stored ions atomic frequency standard  

Science Journals Connector (OSTI)

RF traps are widely used nowadays in high resolution hyperfine spectroscopy. The spectrum of the microwave hyperfine transition at 40.5 GHz of the fundamental level2 S 1/2 of199Hg+

C. Meis; M. Jardino; B. Gely; M. Desaintfuscien

1989-01-01T23:59:59.000Z

105

H.G. Rickover, 1964 | U.S. DOE Office of Science (SC)  

Office of Science (SC) Website

1960's H.G. Rickover, 1964 Print Text Size: A A A FeedbackShare Page Citation For engineering and demonstrative leadership in the development of safe and reliable nuclear...

106

Modern Records of Atmospheric Nitrous Oxide (N2O) and a 2000-year Ice-core  

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

Modern Records of Atmospheric Nitrous Oxide (N2O) and a 2000-year Ice-core Modern Records of Atmospheric Nitrous Oxide (N2O) and a 2000-year Ice-core Record from Law Dome, Antarctica Introduction This page provides an introduction and links to records of atmospheric nitrous oxide (N2O) over the last 2000 years, emphasizing large data bases each representing currently active stations. Records in recent decades (time period depending on location) have been obtained from samples of ambient-air at remote locations, which represent changing global atmospheric conditions rather than influences of local sources. The longer (2000-year) record is from the Law Dome ice core in Antarctica. The ice-core record has been merged with modern annual data from Cape Grim, Tasmania to provide a 2000-year time series of annual values. A spline function has been fit to the data to provide a continuous time series of

107

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

E-Print Network [OSTI]

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

Xiao-Jun Wang; Seng Hu

2002-07-16T23:59:59.000Z

108

Experimental and theoretical study of the (n,2n) reaction on 174,176Hf isotopes  

Science Journals Connector (OSTI)

Cross sections for the 174Hf(n,2n)173Hf and 176Hf(n,2n)175Hf reactions have been measured on the 5.5-MV Van de Graaff tandem accelerator of National Centre for Scientific Research “Demokritos” in Athens, in the neutron energy region from 8.8 to 11.0 MeV, using the activation technique. An experimental method to account for the contamination of the 176Hf(n,2n) reaction by the 174Hf(n,?) reaction activated by the parasitic neutrons of the beam is presented. Statistical model calculations have also been performed using the nuclear-reaction codes empire-ii and talys. The results and effects of the nuclear input parameters as well as pre-equilibrium emission are discussed in detail.

M. Serris; M. Diakaki; S. Galanopoulos; M. Kokkoris; M. Lamprou; C. T. Papadopoulos; R. Vlastou; P. Demetriou; C. A. Kalfas; A. Lagoyannis

2012-09-07T23:59:59.000Z

109

New estimates of global emissions of N2O from rivers and estuaries  

E-Print Network [OSTI]

from rivers and estuaries. We present total global emissions, as well as regional shares. 2New estimates of global emissions of N2O from rivers and estuaries CAROLIEN KROEZE1 , EGON DUMONT1 rivers and estuaries, using the NEWS-DIN model. NEWS-DIN is a model of the global transport of dissolved

Seitzinger, Sybil

110

Shock-Tube Study of Methane Ignition with NO2 and N2O  

E-Print Network [OSTI]

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

Pemelton, John

2012-10-19T23:59:59.000Z

111

Instanton calculus and nonperturbative relations in N=2 supersymmetric gauge theories  

Science Journals Connector (OSTI)

Using instanton calculus we check, in the weak coupling region, the nonperturbative relation ?Tr?2?=i?[F-(a/2)?F/?a] obtained for a N=2 globally supersymmetric gauge theory. Our computations are performed for instantons of winding number k, up to k=2, and turn out to agree with previous nonperturbative results.

Francesco Fucito and Gabriele Travaglini

1997-01-15T23:59:59.000Z

112

Vibrational spectra of N2: An advanced undergraduate laboratory in atomic and molecular spectroscopy  

E-Print Network [OSTI]

an advanced laboratory course focused on spectroscopy of atoms and molecules, for a diverse and solid#12;Vibrational spectra of N2: An advanced undergraduate laboratory in atomic and molecular to demonstrate molecular spectroscopy by measuring the vibrational energy spacing of nitrogen molecules

Bayram, S. Burçin

113

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

E-Print Network [OSTI]

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

Ingrand, François

114

MIS 381N.2 Research in Information Systems: Organizational and Behavioral Perspectives  

E-Print Network [OSTI]

, corporate strategy and IT, business value of IT, knowledge management and organizational learning1 MIS 381N.2 Research in Information Systems: Organizational and Behavioral Perspectives Spring creation, to new organizational, network, and community structures, to a new cadre of business models

Ghosh, Joydeep

115

Ann. Polon. Math., 90, N2, (2007), 145-148. Invisible obstacles  

E-Print Network [OSTI]

Ann. Polon. Math., 90, N2, (2007), 145-148. 1 #12;Invisible obstacles A.G. Ramm Mathematics number will be as small as one wishes. The obstacle is called "invisible" in this case. 1 Introduction ([1]). key words: wave scattering, inverse problems, invisible obstacles AMS subject classification

116

Orientational-ordering transition fcc-Pa3 of Ar1-x(N2)x  

Science Journals Connector (OSTI)

Solid solutions of Ar1-x(N2)x, 0.83

H. Klee and K. Knorr

1991-04-01T23:59:59.000Z

117

CH4 and N2O emissions from Spartina alterniflora and Phragmites australis in experimental mesocosms  

E-Print Network [OSTI]

Author's personal copy CH4 and N2O emissions from Spartina alterniflora and Phragmites australis emissions from S. alterniflora with those from a native C3 plant, Phragmites australis, by establishing Elsevier Ltd. All rights reserved. Keywords: Common reed (Phragmites australis); Brackish marsh mesocosms

Chen, Jiquan

118

Study of implantation in HgCdTe by electrolyte electroreflectance  

Science Journals Connector (OSTI)

Electrolyte electroreflectance (EER) and Hall?effect measurements have been performed on liquid phase epitaxy (LPE) layers of Hg1?x Cd x Te as grown with x=0.31 implanted with B ions implanted and annealed and annealed but not implanted. The use of our generalized theory to fit the EER results allowed us to study in detail as a function of depth the roles of implantation and annealing in Hg migration and in the formation of extended two?dimensional defects antisites and inhomogeneous strains. This is the first systematic EER study of the effects of implantation in state?of?the?art LPE materials. In the region affected by implantation our results suggest the diffusion of displaced Hg in the postimplant annealing process is associated with Te antisite formation and with compensating inhomogeneous strains. Moreover this Hg migration generates a region located approximately in the middle of the n?type layer which actually has a wider gap than the bulk. The relaxation of the lattice and the healing of damage promoted by the anneal are accompanied by a Hg redistribution which tends to lessen the disruptive effects of the antisite complexes. This picture of the implantation process is consistent with earlier conclusions.

P. M. Raccah; J. W. Garland; Z. Zhang; D. Yang; L. O. Bubulac; W. E. Tennant

1987-01-01T23:59:59.000Z

119

Synthesis and Characterization of CO- and H2S- Tolerant Electrocatalysts for PEM Fuel Cell  

SciTech Connect (OSTI)

The present state-of-art Proton Exchange Membrane Fuel Cell (PEMFC) technology is based on platinum (Pt) as a catalyst for both the fuel (anode) and air (cathode) electrodes. This catalyst is highly active but susceptible to poisoning by CO, which may be present in the H{sub 2}-fuel used or may be introduced during the fuel processing. Presence of trace amount of CO in the H{sub 2}-fuel poisons the anode irreversibly and decreases the performance of the PEMFCs. In an effort to reduce the Pt-loading and improve the PEMFC performance, we have synthesized a number of Pt-based binary, ternary, and quaternary electrocatalysts using Ru, Mo, Ir, Ni, and Co as a substitute for Pt. Co-catalytic activities were found for the elements Mo, Ru, and Ir. Both the ternary (Pt/Ru/Mo/C) and quaternary (Pt/Ru/Mo/Ir/C) metal catalysts in membrane electrode assemblies (MEA) outperformed pure Pt/C catalysts at all levels in presence of CO up to 100 ppm. Preliminary results suggest that by substituting Mo, Ru, and Ir in catalyst formulation, it is possible to reduce Pt-loading and increase CO-tolerance in PEMFC application. Comparison studies showed that the newly developed ternary and quaternary catalysts with lower Pt outperformed pure Pt catalyst in presence of CO-contaminated H{sub 2} fuel. High performance at low Pt loading of less than 0.4 mg/cm{sup 2} was achieved, thus exceeding the initial targets.

Shamsuddin Ilias

2006-12-31T23:59:59.000Z

120

Development of analytical techniques to study H2s poisoning of PEMFCs and components  

SciTech Connect (OSTI)

Polymer electrolyte membrane fuel cells are sensitive to impurities that may be present in either the oxidizer or fuel. H{sub 2}S, even at the ppb level, will have a dramatic and adverse affect on fuel cell performance. Not only is it important to know a particular material's affinity to adsorb H{sub 2}S, when considering materials for PEMFC applications, issues such as permeation and crossover rates also become extremely important Several experimental methods have been developed to quantify H{sub 2}S adsorption onto surfaces and to quantify H{sub 2}S permeation through Nafion(reg.) membranes using readily available and inexpensive Ag/AgS ion probes. In addition to calculating the H{sub 2}S uptake on commonly used XC-72 carbon supports and PtlXC-72 catalysts, the H{sub 2}S permeability through dry and humidified Nafion(reg.) PEMFC membranes was also studied using these specialized techniques. In each ion probe experiment performed, a sulfide anti-oxidant buffer solution was used to trap and concentrate trace quantities of H{sub 2}S during the course of the measurement. Crossover experiments were conducted for up to 24 hours in order to achieve sulfide ion concentrations high enough to be precisely determined by subsequent titration with Pb(NO{sub 3}){sub 2}. By using these techniques, we have confirmed H{sub 2}S crossover in Nafion(reg.) membranes and have calculated preliminary rates of H{sub 2}S crossover.

Brosha, Eric L [Los Alamos National Laboratory; Rockward, Tommy [Los Alamos National Laboratory; Uribe, Francisco A [Los Alamos National Laboratory; Garzon, Fernando H [Los Alamos National Laboratory

2008-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "n2 h2s hg" 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

Synthesis and Characterization of CO- and H2S-Tolerant Electrocatalysts for PEM Fuel Cell  

SciTech Connect (OSTI)

The present state-of-art Proton Exchange Membrane Fuel Cell (PEMFC) technology is based on platinum (Pt) as a catalyst for both the fuel (anode) and air (cathode) electrodes. This catalyst is highly active but susceptible to poisoning by CO, which may be present in the H{sub 2}-fuel used or may be introduced during the fuel processing. Presence of trace amount of CO and H{sub 2}S in the H{sub 2}-fuel poisons the anode irreversibly and decreases the performance of the PEMFCs. In an effort to reduce the Pt-loading and improve the PEMFC performance, we propose to synthesize a number of Pt-based binary, ternary, and quaternary electrocatalysts using Ru, Mo, Ir, Ni, and Co as a substitute for Pt. By fine-tuning the metal loadings and compositions of candidate electrocatalysts, we plan to minimize the cost and optimize the catalyst activity and performance in PEMFC. The feasibility of the novel electrocatalysts will be demonstrated in the proposed effort with gas phase CO and H{sub 2}S concentrations typical of those found in reformed fuel gas with coal/natural gas/methanol feedstocks. During this reporting period we synthesized several tri-metallic electrocatalysts catalysts (Pt/Ru/Mo, Pt/Ru/Ir, Pt/Ru/W, Ptr/Ru/Co, and Pt/Ru/Se on Vulcan XG72 Carbon) by ultrasonication method. These catalysts were tested in MEAs for CO tolerance at 20 and 100 ppm CO concentrations. From Galvonstatic study the catalytic activity was found in the order of: Pt/Ru/Mo/C > Pt/Ru/Ir/C > Pt/Ru/W/C > Ptr/Ru/Co/C > and Pt/Ru/Se. The catalysts performed very well at 20 ppm CO but at 100 ppm CO performance dropped significantly.

Shamsuddin Ilias

2005-07-20T23:59:59.000Z

122

Kinetics of Direct Oxidation of H2S in Coal Gas to Elemental Sulfur  

SciTech Connect (OSTI)

Removal of hydrogen sulfide (H{sub 2}S) from coal gasifier gas and sulfur recovery are key steps in the development of Department of Energy's (DOE's) advanced Vision 21 plants that produce electric power and clean transportation fuels with coal and natural gas. These Vision 21 plants will require highly clean coal gas with H{sub 2}S below 1 ppm and negligible amounts of trace contaminants such as hydrogen chloride, ammonia, alkali, heavy metals, and particulate. The conventional method of sulfur removal and recovery employing amine, Claus, and tail-gas treatment is very expensive. A second generation approach developed under DOE's sponsorship employs hot-gas desulfurization (HGD) using regenerable metal oxide sorbents followed by Direct Sulfur Recovery Process (DSRP). However, this process sequence does not remove trace contaminants and is targeted primarily towards the development of advanced integrated gasification combined cycle (IGCC) plants that produce electricity (not both electricity and transportation fuels). There is an immediate as well as long-term need for the development of cleanup processes that produce highly clean coal gas for next generation Vision 21 plants. To this end, a novel process is now under development at several research organizations in which the H{sub 2}S in coal gas is directly oxidized to elemental sulfur over a selective catalyst. Such a process is ideally suited for coal gas from commercial gasifiers with a quench system to remove essentially all the trace contaminants except H{sub 2}S. The direct oxidation of H{sub 2}S to elemental sulfur in the presence of SO{sub 2} is ideally suited for coal gas from commercial gasifiers with a quench system to remove essentially all the trace contaminants except H{sub 2}S. This direct oxidation process has the potential to produce a super clean coal gas more economically than both conventional amine-based processes and HGD/DSRP. The objectives of this research are to measure kinetics of direct oxidation of H{sub 2}S to elemental sulfur in the presence of a simulated coal gas mixture containing SO{sub 2}, H{sub 2}, and moisture, using 160-{micro}m C-500-04 alumina catalyst particles and 400 square cells/inch{sup 2}, {gamma}-Al{sub 2}O{sub 3}-wash-coated monolithic catalyst, and various reactors such as a micro packed-bed reactor, a micro bubble reactor, and a monolithic catalyst reactor, and to develop kinetic rate equations and model the direct oxidation process to assist in the design of large-scale plants. This heterogeneous catalytic reaction has gaseous reactants such as H{sub 2}S and SO{sub 2}. However, this heterogeneous catalytic reaction has heterogeneous products such as liquid elemental sulfur and steam.

K.C. Kwon

2005-11-01T23:59:59.000Z

123

Corrosion mechanisms in aqueous solutions containing dissolved H2S. Part 2: Mode! ofthe cathodic reactions.  

E-Print Network [OSTI]

) the expression of the current density for the reaction (3) was obtained after the determination of the Tafel potential, and bc.u,s is the cathodic Tafel slope equal to 145±10mV (!). 2 Governing equations The governing

Paris-Sud XI, Université de

124

Iodide retention by cinnabar (HgS) and chalcocite (Cu{sub 2}S)  

SciTech Connect (OSTI)

Sorption of iodide (I{sup {minus}}) on cinnabar (HgS) and chalcocite (Cu{sub 2}S) was examined as a function of pH at 25{degrees}C in a series of batch experiments. Calculated distribution ratios (K{sub d}) far exceed those reported for other minerals; maximal K{sub d}`s of 1375 cc/g (Cu{sub 2}S) and 3080 c/g (HgS) were observed between pH 4-5, but wre substantial at all pH`s measured (4 < pH < 10). Iodide sorption apparently occurs by the formation of an insoluble surface solid solution with exposed Hg and Cu sites. Surface solid solution formation is favored at low pH due to the lessened electrostatic repulsion of the iodide ion by the sulfide surfaces.

Anderson, H.L.; Balsley, S.D.; Brady, P.V.

1995-07-01T23:59:59.000Z

125

The Chemical Separation of Eka-Hg from CERN W Targets in view of Recent Relativistic Calculations  

E-Print Network [OSTI]

In 1971 evidence for the production of element 112 via secondary reactions in CERN W targets was obtained. The evidence was mainly based on the observation of fission fragments in Hg sources separated from the W targets, on the measured masses of the fissioning nuclei and on the assumption that element 112 (Eka-Hg) actually behaves like Hg in the chemical separation process. This assumption is analyzed in view of recent relativistic calculations of the electronic structure of element 112. It is shown that in the superheavy element region only the chemistry of element 112 is similar to that of Hg.

D. Kolb; A. Marinov; G. W. A. Newton; R. Brandt

2004-12-07T23:59:59.000Z

126

Multi-instanton calculus in N=2 supersymmetric gauge theory. II. Coupling to matter  

Science Journals Connector (OSTI)

We further discuss the N=2 superinstantons in SU(2) gauge theory, obtained from the general self-dual solutions of topological charge n constructed by Atiyah, Drinfeld, Hitchin, and Manin (ADHM). We realize the N=2 supersymmetry algebra as actions on the superinstanton moduli. This allows us to recast in concise superfield notation our previously obtained expression for the exact classical interaction between n ADHM superinstantons mediated by the adjoint Higgs bosons, and, moreover, to incorporate NF flavors of hypermultiplets. We perform explicit one- and two-instanton checks of the Seiberg-Witten prepotentials for all NF and arbitrary hypermultiplet masses. Our results for the low-energy couplings are all in precise agreement with the predictions of Seiberg and Witten except for NF=4, where we find a finite renormalization of the coupling which is absent in the proposed solution.

Nicholas Dorey; Valentin V. Khoze; Michael P. Mattis

1996-12-15T23:59:59.000Z

127

Kinetic Isotope Effects in the N2O Decomposition over NiO  

Science Journals Connector (OSTI)

Kinetic Isotope Effects in the N2O Decomposition over NiO ... The 15N and 18O kinetic isotope effects (KIEs) in the catalytic decomposition of nitrous oxide on NiO powder were determined in the temperature range of 625?825 K, and the following temperature dependencies were found:? KIE(15N) = (0.821 ± 0.180) + (1445 ± 128)/T and KIE(18O) = (1.384 ...

Peter Žemva; Antonija Lesar; Ivan Kobal; Marjan Senega?nik

2001-04-21T23:59:59.000Z

128

Observation de super-rseaux CdTe-HgTe par microscopie lectronique en transmission  

E-Print Network [OSTI]

-conducteurs II-VI a été beaucoup plus tardive [2]. Dans cette dernière famille, le système CdTe- HgTe présente l'avantage d'un accord de maille quasi parfait entre les deux composés (a = 0,648 nm pour CdTe contre a = 0 JET MOL�CULAIRE. - Les super- réseaux CdTe-HgTe ont été épitaxiés sur un substrat CdTe d

Paris-Sud XI, Université de

129

Instanton calculus, topological field theories and N = 2 super Yang-Mills theories  

Science Journals Connector (OSTI)

The results obtained by Seiberg and Witten for N = 2 supersymmetric theories with gauge group SU(2) are in agreement with instanton computations carried out for winding numbers one and two. This suggests that the instanton saddle point saturates the non-perturbative contribution to the functional integral. A natural framework in which corrections to this approximation are absent is given by the topological field theory built out of the N = 2 Super Yang-Mills theory. After extending the standard construction of the Topological Yang-Mills theory to encompass the case of a non-vanishing vacuum expectation value for the scalar field, a BRST transformation is defined (as a supersymmetry plus a gauge variation), which on the instanton moduli space is the exterior derivative. We then show that each non-perturbative contribution to the N = 2 low-energy effective action can be written as the integral of a total derivative of a function of the instanton moduli. Only instanton configurations of zero conformal size contribute to this result.

Diego Bellisai; Francesco Fucito; Gabriele Travaglini; Alessandro Tanzini

2000-01-01T23:59:59.000Z

130

A decoupled approach for NOx–N2O 3-D CFD modeling in CFB plants  

Science Journals Connector (OSTI)

Abstract In this study, a 3D CFD model for the formation of \\{NOx\\} and N2O in a lignite fired 1.2 MWth CFB pilot plant is developed. The decoupled approach (decoupled from combustion simulation) is tested for the minimization of computational cost. As combustion simulation is prerequired, this was achieved through a simplified 3-D CFD combustion model. The developed model is then applied to the pilot-scale 1.2 MWth CFB plant and validated against experimental data. As concerns the NOx–N2O model, an extensive literature review is also carried out for the incorporation of the appropriate reactions network and respective reaction rates expressions. Results show that homogenous reactions are favoured on the lower section of the bed, due to the abundance of fuel devolatilization products. On the other hand, on the upper section, heterogeneous reactions govern nitric oxide formation/reduction. It is found that for the lignite examined in this work, HCN is released in negligible amounts during char combustion. The proposed and validated CFD model for \\{NOx\\} and N2O, is capable of examining the effect of different operational parameters and coal properties on the overall nitric oxides emissions from a CFB combustor, with low computational cost and without the additional expenses for pilot-scale experiments.

A. Nikolopoulos; I. Malgarinos; N. Nikolopoulos; P. Grammelis; S. Karrelas; E. Kakaras

2014-01-01T23:59:59.000Z

131

ORIGINAL PAPER Short-term effect of tillage intensity on N2O and CO2 emissions  

E-Print Network [OSTI]

ORIGINAL PAPER Short-term effect of tillage intensity on N2O and CO2 emissions Pascal Boeckx negative to positive. We studied the short-term effect of tillage intensity on N2O and CO2 emissions. We site, an intermediately aerated Luvisol in Belgium, were similar. Nitrous oxide and CO2 emissions were

Paris-Sud XI, Université de

132

Single-QCL-based absorption sensor for simultaneous trace-gas detection of CH4 and N2O  

E-Print Network [OSTI]

compact multipass gas cell (MGC). This sensor uses a thermoelectrically cooled, continuous wave­8]. A compact mid-infrared absorption spectrometer for N2O and CH4 was developed using thermoelectrically cooled.04 cm-1 ) and N2O (1274.61 cm-1 ) lines at a 1 Hz repetition rate. Wavelength modulation spec- troscopy

133

Appendix: Mercury Emissions used in CAM-Chem/Hg model. 1. Anthropogenic emissions  

E-Print Network [OSTI]

Appendix: Mercury Emissions used in CAM-Chem/Hg model. 1. Anthropogenic emissions The anthropogenic emission of mercury is directly adopted from global mercury emission inventory [Pacyna et al., 2005]. The anthropogenic emissions are shown in annual averaged total mercury emissions. (Unit: µg/m2 /day) 2. Land

Meskhidze, Nicholas

134

creasing Hg2 concentration. After correcting for the initial shift caused by the new environment,  

E-Print Network [OSTI]

- tical density 9 4). The HgCl2 was still detected through these highly absorptive media (Fig. 3D-SWNTs and inserted into whole blood and muscle tissue. The complex was added directly to a black dye solution (op). The near-IR fluorescence of DNA-SWNTs in the dye solution exhibited the same response as SWNTs in pure

Garzione, Carmala N.

135

Optical Diagnostics Hg_jet_meeting, 01-18-05 Thomas Tsang  

E-Print Network [OSTI]

Optical Diagnostics Hg_jet_meeting, 01-18-05 Thomas Tsang · tight environment · high radiation area · non-serviceable area · passive components · optics only, no active electronics · back illuminated with a single fiber laser - pulsed laser X · transmit image through flexible fiber bundle #12;Optical

McDonald, Kirk

136

SmartHG: Energy Demand Aware Open Services for Smart Grid Intelligent Automation  

E-Print Network [OSTI]

SmartHG: Energy Demand Aware Open Services for Smart Grid Intelligent Automation Enrico Tronci- ing, energy storage (e.g., batteries or plug-in hybrid electric vehicles) and energy production (e economically viable Intelligent Automation Services (IASs), which gather real-time data about energy usage from

Tronci, Enrico

137

H-G Diagram Based Rotor Parameters Identification for Induction Motors Thermal Monitoring  

E-Print Network [OSTI]

H-G Diagram Based Rotor Parameters Identification for Induction Motors Thermal Monitoring Mohamed: In this paper, an effective on-line method for induction motor parameter identification, especially rotor for each operating point. Computer simulations and experimental tests, carried out for a 4-kW four

Brest, Université de

138

Effect of Divalent Metals on Hg(II) Uptake and Methylation by Bacteria  

Science Journals Connector (OSTI)

The production of methylmercury by some bacteria is a key first step in the accumulation and biomagnification of this toxic substance in aquatic food webs, a major human health concern. By direct measurement of cellular Hg(II) uptake in model iron and ...

Jeffra K. Schaefer; Aleksandra Szczuka; François M. M. Morel

2014-02-10T23:59:59.000Z

139

Modelling Glass Parisons R.M.M. Mattheij, K. Wang & H.G. ter Morsche  

E-Print Network [OSTI]

Modelling Glass Parisons R.M.M. Mattheij, K. Wang & H.G. ter Morsche EMail: mattheij@win.tue.nl Abstract In order to design better glass products, numerical modelling is essential. In this paper we focus, more specifically, on pressing forms, so called parison, appearing in the produc­ tion of packing glass

Eindhoven, Technische Universiteit

140

Pinning lattice: Effect of rhenium doping on the microstructural evolution from Tl-2212 to Hg-1212 films during cation exchange  

E-Print Network [OSTI]

In a cation exchange process developed recently by some of us, epitaxial HgBa2CaCu2O6 films can be obtained by diffusing volatile Tl cations out of, and simultaneously diffusing Hg cations into, the crystalline lattice of ...

Wu, Judy; Zhao, H.

2004-08-15T23:59:59.000Z

Note: This page contains sample records for the topic "n2 h2s hg" 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

Absorption of Narrow-Gap HgCdTe Near the Band Edge Including Nonparabolicity and the Urbach Tail  

E-Print Network [OSTI]

Absorption of Narrow-Gap HgCdTe Near the Band Edge Including Nonparabolicity and the Urbach Tail, USA. 6.--e-mail: yonchang@uic.edu An analytical model describing the absorption behavior of Hg1-x. This model smoothly fits experimental absorption coefficients over energies ranging from the Urbach tail

Flatte, Michael E.

142

High resolution measurements of the {sup 241}Am(n,2n) reaction cross section  

SciTech Connect (OSTI)

Measurements of the {sup 241}Am(n,2n) reaction cross section have been performed at the Joint Research Centre (JRC) Geel in the frame of a collaboration between the European Commission (EC) JRC and French laboratories from CNRS and the Commissariat a L'Energie Atomique (CEA) Cadarache. Raw material coming from the Atalante facility of CEA Marcoule has been transformed by JRC Karlsruhe into suitable {sup 241}AmO{sub 2} samples embedded in Al{sub 2}O{sub 3} matrices specifically designed for these measurements. The irradiations were carried out at the 7-MV Van de Graaff accelerator. The {sup 241}Am(n,2n) reaction cross section was determined relative to the {sup 27}Al(n,alpha){sup 24}Na standard cross section. The measurements were performed in four sessions, using quasi-mono-energetic neutrons with energies ranging from 8 to 21 MeV produced via the {sup 2}H(d,n){sup 3}He and the {sup 3}H(d,n){sup 4}He reactions. The induced activity was measured by standard gamma-ray spectrometry using a high-purity germanium detector. Below 15 MeV, the present results are in agreement with data obtained earlier. Above 15 MeV, these measurements allowed the experimental investigation of the {sup 241}Am(n,2n) reaction cross section for the first time. The present data are in good agreement with predictions obtained with the talys code that uses an optical and fission model developed at CEA.

Sage, C. [Commissariat a L'Energie Atomique Saclay, DSM/IRFU/SPhN, F-91191 Gif-sur-Yvette (France); European Commission, Joint Research Centre, Institute for Reference Materials and Measurements, Retieseweg 111, B-2440 Geel (Belgium); Commissariat a L'Energie Atomique Cadarache, DEN/CAD/DER/SPRC/LEPh, F-13108 St Paul-lez-Durance (France); Institut Pluridisciplinaire Hubert Curien, F-67037 Strasbourg (France); Semkova, V. [European Commission, Joint Research Centre, Institute for Reference Materials and Measurements, Retieseweg 111, B-2440 Geel (Belgium); Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, BG-1784 Sofia (Bulgaria); Bouland, O. [Commissariat a L'Energie Atomique Cadarache, DEN/CAD/DER/SPRC/LEPh, F-13108 St Paul-lez-Durance (France); Los Alamos National Laboratory, Theoretical Division, Los Alamos, New Mexico 87545 (United States); Dessagne, P.; Rudolf, G. [Institut Pluridisciplinaire Hubert Curien, F-67037 Strasbourg (France); Fernandez, A.; Naestren, C.; Ottmar, H.; Somers, J.; Wastin, F. [European Commission, Joint Research Centre, Institute for Transuranium Elements, Postfach 2340, D-76125 Karlsruhe (Germany); Gunsing, F. [Commissariat a L'Energie Atomique Saclay, DSM/IRFU/SPhN, F-91191 Gif-sur-Yvette (France); Noguere, G. [Commissariat a L'Energie Atomique Cadarache, DEN/CAD/DER/SPRC/LEPh, F-13108 St Paul-lez-Durance (France); Plompen, A. J. M. [European Commission, Joint Research Centre, Institute for Reference Materials and Measurements, Retieseweg 111, B-2440 Geel (Belgium); Romain, P. [Commissariat a L'Energie Atomique, DAM, DIF, F-91297 Arpajon (France)

2010-06-15T23:59:59.000Z

143

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

E-Print Network [OSTI]

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

Maxime Gabella; Dario Martelli; Achilleas Passias; James Sparks

2011-07-25T23:59:59.000Z

144

Excitation of the C? 3? u state of N2 by electron impact  

Science Journals Connector (OSTI)

The ?=3371 Å spectral band of the C? 3? u ?B? 3? g (v?=0 v ?=0) second positive system is investigated using time?resolved spectroscopy with electron beam pulse widths of 100 nsec 260 nsec and 5 ?sec. Lifetime data for the v?=0 vibrational level of the C? 3? u electronic state are obtained for incident electron energies and N2 gas pressures in the range 25–200 eV and 2–380 mtorr respectively. In the case of the 260 nsec electron pulse a single radiative decay component is observed which exhibits a dependence upon electron impact energy. However in the case of a 5 ?sec excitation pulse the resulting radiative decay is observed to consist of two decay components. The short?lived component is identified as the primary C? 3? u state excitation while the long?lived component is identified as the radiative cascade contribution from higher electronic states including possibly the metastable E? 3?+ g state. When the long?lived cascade contribution is subtracted from the total C? 3? u population the C state natural radiative lifetime becomes independent of energy. In addition the lifetime is observed to be independent of N2 gas pressure over the pressure range ?2–380 mtorr.

S. T. Chen; Richard J. Anderson

1975-01-01T23:59:59.000Z

145

Operator-Schmidt decomposition of the quantum Fourier transform on C^N1 tensor C^N2  

E-Print Network [OSTI]

Operator-Schmidt decompositions of the quantum Fourier transform on C^N1 tensor C^N2 are computed for all N1, N2 > 1. The decomposition is shown to be completely degenerate when N1 is a factor of N2 and when N1>N2. The first known special case, N1=N2=2^n, was computed by Nielsen in his study of the communication cost of computing the quantum Fourier transform of a collection of qubits equally distributed between two parties. [M. A. Nielsen, PhD Thesis, University of New Mexico (1998), Chapter 6, arXiv:quant-ph/0011036.] More generally, the special case N1=2^n1<2^n2=N2 was computed by Nielsen et. al. in their study of strength measures of quantum operations. [M.A. Nielsen et. al, (accepted for publication in Phys Rev A); arXiv:quant-ph/0208077.] Given the Schmidt decompositions presented here, it follows that in all cases the communication cost of exact computation of the quantum Fourier transform is maximal.

Jon Tyson

2002-10-13T23:59:59.000Z

146

Physisorption of N2, O2, and CO on Fully Oxidized TiO2(110)  

SciTech Connect (OSTI)

Physisorption of N2, O2 and CO was studied on fully oxidized TiO2(110) using beam reflection and temperature programmed desorption (TPD) techniques. Sticking coefficients for all three molecules are nearly equal (0.75 ± 0.05) and approximately independent of coverage suggesting that adsorption occurs via a precursor mediated mechanism. Excluding multilayer coverages, the TPD spectra for all three adsorbates exhibit three distinct coverage regimes that can be interpreted in accord with previous theoretical studies of N2 adsorption. At low coverages (0 to 0.5 N2/Ti4+), N2 molecules bind head-on to five-coordinated Ti4+ ions. The adsorption occurs preferentially on the Ti4+ sites that do not have neighboring adsorbates. This arrangement minimizes the repulsive interactions between the adsorbed molecules along the Ti4+ rows resulting in a relatively small shift of the TPD peak (105 ? 90 K) with increasing coverage. At higher N2 coverages (0 to 1.0 N2/Ti4+) the nearest-neighbor Ti4+ sites become occupied. The close proximity of the adsorbates results in strong repulsion thus giving rise to a significant shift of the TPD leading edges (90 ? 45 K) with increasing coverage. For N2/Ti4+ > 1, an additional low temperature peak (~ 43 K) is present and is ascribed to N2 adsorption on bridge-bonded oxygen rows. The results for O2 and CO are qualitatively similar. The repulsive adsorbate-adsorbate interactions largest for CO, most likely due to aligned CO dipole moments. The coverage dependent binding energies of O2, N2, and CO are determined by inverting TPD profiles.

Dohnalek, Zdenek; Kim, Jooho; Bondarchuk, Oleksander A.; White, J. M.; Kay, Bruce D.

2006-03-30T23:59:59.000Z

147

Axi-symmetrical flow reactor for [sup 196]Hg photochemical enrichment  

DOE Patents [OSTI]

The present invention is directed to an improved photochemical reactor useful for the isotopic enrichment of a predetermined isotope of mercury, especially, [sup 196]Hg. Specifically, two axi-symmetrical flow reactors were constructed according to the teachings of the present invention. These reactors improve the mixing of the reactants during the photochemical enrichment process, affording higher yields of the desired [sup 196]Hg product. Measurements of the variation of yield (Y) and enrichment factor (E) along the flow axis of these reactors indicates very substantial improvement in process uniformity compared to previously used photochemical reactor systems. In one preferred embodiment of the present invention, the photoreactor system was built such that the reactor chamber was removable from the system without disturbing the location of either the photochemical lamp or the filter employed therewith. 10 figures.

Grossman, M.W.

1991-04-30T23:59:59.000Z

148

Surface characterization and electronic structure of HgTe nanocrystalline thin films  

Science Journals Connector (OSTI)

Mercury telluride (HgTe) nanocrystalline thin films were synthesized using an electrochemical deposition technique. The surface morphology of the thin films were investigated by atomic force microscopy (AFM) as a function of the film thickness which shows that an increase in film thickness increases the surface roughness. The scaling exponents such as roughness exponent, ? and growth exponent, ? associated with the film growth, determined from surface and power spectral analysis using AFM are found to be 0.88±0.05 and 0.21±0.04 respectively. The shifting of the valence and core levels to higher binding energy as evidenced from x-ray photoelectron spectroscopy, suggest the change in electronic structure of the nano-HgTe films possibly due to the surface roughness.

S. Rath, D. Paramanik, S. N. Sarangi, S. Varma, and S. N. Sahu

2005-11-08T23:59:59.000Z

149

The structural and electronic properties of amorphous HgCdTe from first-principles calculations  

Science Journals Connector (OSTI)

Amorphous mercury cadmium telluride (a-MCT) model structures, with x being 0.125 and 0.25, are obtained from first-principles calculations. We generate initial structures by computation alchemy method. It is found that most atoms in the network of amorphous structures tend to be fourfold and form tetrahedral structures, implying that the chemical ordered continuous random network with some coordination defects is the ideal structure for a-MCT. The electronic structure is also concerned. The gap is found to be 0.30 and 0.26 eV for a-Hg0.875Cd0.125Te and a-Hg0.75Cd0.25Te model structures, independent of the composition. By comparing with the properties of crystalline MCT with the same composition, we observe a blue-shift of energy band gap. The localization of tail states and its atomic origin are also discussed.

Huxian Zhao; Xiaoshuang Chen; Jianping Lu; Haibo Shu; Wei Lu

2014-01-01T23:59:59.000Z

150

Receptor Specificity and Transmission of H2N2 Subtype Viruses Isolated from the Pandemic of 1957  

E-Print Network [OSTI]

Influenza viruses of the H2N2 subtype have not circulated among humans in over 40 years. The occasional isolation of avian H2 strains from swine and avian species coupled with waning population immunity to H2 hemagglutinin ...

Pappas, Claudia

151

Gas?Kinetic Temperature of Planar High?Frequency Capacitive Discharge Plasma in N2/CO2/He Gas Mixtures  

Science Journals Connector (OSTI)

Using methods of emission spectroscopy, we have determined the gas?kinetic temperature fields of planar high?frequency capacitive discharge plasma in N2/CO2/He gas mixtures depending on the excitation frequency, ...

V. V. Azharonok; I. I. Filatova; V. D. Shimanovich…

2001-09-01T23:59:59.000Z

152

Line shape in the low-frequency wing of N2 and O2 broadened CO2 lines  

Science Journals Connector (OSTI)

The shape of the far wings of N2 and O2 broadened CO2 lines have been investigated, at room temperature, in the 2140–2250-cm?1 spectral...

Menoux, V; Le Doucen, R; Boulet, C

1987-01-01T23:59:59.000Z

153

N=2 supersymmetric extension of a hydrodynamic system in Riemann invariants  

SciTech Connect (OSTI)

In this paper, we formulate an N=2 supersymmetric extension of a hydrodynamic-type system involving Riemann invariants. The supersymmetric version is constructed by means of a superspace and superfield formalism, using bosonic superfields, and consists of a system of partial differential equations involving both bosonic and fermionic variables. We make use of group-theoretical methods in order to analyze the extended model algebraically. Specifically, we calculate a Lie superalgebra of symmetries of our supersymmetric model and make use of a general classification method to classify the one-dimensional subalgebras into conjugacy classes. As a result we obtain a set of 401 one-dimensional nonequivalent subalgebras. For selected subalgebras, we use the symmetry reduction method applied to Grassmann-valued equations in order to determine analytic exact solutions of our supersymmetric model. These solutions include traveling waves, bumps, kinks, double-periodic solutions, and solutions involving exponentials and radicals.

Grundland, A. M. [Centre de Recherches Mathematiques, Universite de Montreal, C.P. 6128, Succ. Centre-ville, Montreal, Quebec H3C 3J7 (Canada); Universite du Quebec, Trois-Rivieres, C.P. 500, Quebec G9A 5H7 (Canada); Hariton, A. J. [Centre de Recherches Mathematiques, Universite de Montreal, C.P. 6128, Succ. Centre-ville, Montreal, Quebec H3C 3J7 (Canada)

2009-07-15T23:59:59.000Z

154

N=2 minimal conformal field theories and matrix bifactorisations of x^d  

E-Print Network [OSTI]

We prove a tensor equivalence between full subcategories of a) graded matrix factorisations of the potential x^d-y^d and b) representations of the N=2 minimal super vertex operator algebra at central charge 3-6/d, where d is odd. The subcategories are given by a) permutation-type matrix factorisations with consecutive index sets, and b) Neveu-Schwarz-type representations. The physical motivation for this result is the Landau-Ginzburg / conformal field theory correspondence, where it amounts to the equivalence of a subset of defects on both sides of the correspondence. Our work builds on results by Brunner and Roggenkamp [arXiv:0707.0922], where an isomorphism of fusion rules was established.

Davydov, Alexei; Runkel, Ingo

2014-01-01T23:59:59.000Z

155

N=2 minimal conformal field theories and matrix bifactorisations of x^d  

E-Print Network [OSTI]

We prove a tensor equivalence between full subcategories of a) graded matrix factorisations of the potential x^d-y^d and b) representations of the N=2 minimal super vertex operator algebra at central charge 3-6/d, where d is odd. The subcategories are given by a) permutation-type matrix factorisations with consecutive index sets, and b) Neveu-Schwarz-type representations. The physical motivation for this result is the Landau-Ginzburg / conformal field theory correspondence, where it amounts to the equivalence of a subset of defects on both sides of the correspondence. Our work builds on results by Brunner and Roggenkamp [arXiv:0707.0922], where an isomorphism of fusion rules was established.

Alexei Davydov; Ana Ros Camacho; Ingo Runkel

2014-09-07T23:59:59.000Z

156

Feather-like He plasma plumes in surrounding N2 gas  

Science Journals Connector (OSTI)

Effects of surrounding gases on the propagation of room-temperature atmospheric-pressure plasma jets are reported. A highly unusual feather-like plasma plume is observed only when N2 is used as surrounding gas. The He concentration on the axis at the starting point of the feather-like plume is ?0.85 of the maximum value and is independent on the He flow rates. High-speed optical imaging reveals that dim diffuse plasmas emerge just behind the bright head of the plasma bullet at the starting point of the feather-like plume. These results help tailoring surface exposure in emerging applications of plasma jets in medicine and nanotechnology.

X. P. Lu; Y. Pan; K. Ostrikov

2013-01-01T23:59:59.000Z

157

Large rank Wilson loops in N=2 superconformal QCD at strong coupling  

E-Print Network [OSTI]

We compute the expectation values of circular Wilson loops in large representations at strong coupling, in the large-N limit of the N=2 superconformal theory with SU(N) gauge group and 2N hypermultiplets. Employing Pestun's matrix integral, we focus attention on symmetric and antisymmetric representations with ranks of order N. We find that large rank antisymmetric loops are independent of the coupling at strong 't Hooft coupling while symmetric Wilson loops grow exponentially with it. Symmetric loops display a non-analyticity as a function of the rank, characterized by the splitting of a single matrix model eigenvalue from the continuum, bearing close resemblance to Bose-Einstein condensation in an ideal gas. We discuss implications of these for a putative large-N string dual. The method of calculation we adopt makes explicit the connection to Fermi and Bose gas descriptions and also suggests a tantalizing connection of the above system to a multichannel Kondo model.

Benedict Fraser; S. Prem Kumar

2012-02-28T23:59:59.000Z

158

Automated product recovery in a Hg-196 photochemical isotope separation process  

DOE Patents [OSTI]

A method of removing deposited product from a photochemical reactor used in the enrichment of [sup 196]Hg has been developed and shown to be effective for rapid re-cycling of the reactor system. Unlike previous methods relatively low temperatures are used in a gas and vapor phase process of removal. Importantly, the recovery process is understood in a quantitative manner so that scaling design to larger capacity systems can be easily carried out. 2 figs.

Grossman, M.W.; Speer, R.

1992-07-21T23:59:59.000Z

159

CdTe AND CdTe : Hg ALLOYS CRYSTAL GROWTH USING STOICHIOMETRIC AND OFF-STOICHIOMETRIC  

E-Print Network [OSTI]

123 CdTe AND CdTe : Hg ALLOYS CRYSTAL GROWTH USING STOICHIOMETRIC AND OFF-STOICHIOMETRIC ZONE.-Briand, 92190 Meudon/Bellevue, France Résumé. 2014 En vue de la croissance de cristaux de CdTe de haute cristaux semi-isolants Cd0, 9Hg0, 1Te. Abstract. 2014 Some aspects of the thermodynamic state of CdTe

Paris-Sud XI, Université de

160

Data-based estimates of suboxia, denitrification, and N2O production in the ocean and their sensitivities to dissolved O2  

E-Print Network [OSTI]

pathways, N2O is a powerful greenhouse gas that affects the Earth's energy balance and climate. The ocean

Note: This page contains sample records for the topic "n2 h2s hg" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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We encourage you to perform a real-time search of NLEBeta
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161

Electrolyte electroreflectance in the characterization of HgCdTe heterostructures  

Science Journals Connector (OSTI)

We have used the technique of electrolyte electroreflectance (EER) coupled with electrochemicaletching to profile through epitaxial layers and heterostructures of Hg1?x Cd x Te. The need for proper electrochemical control during EER measurements is discussed. The resolution achieved in both composition ?x=±0.002 and etch depth ±30 Å has made possible the observation of the variations in composition at the ambient/epilayer epilayer/substrate and high?x/low?x interfaces. Good correlations of the profiles observed have been obtained with secondary ion mass spectroscopy electron dispersive x?ray diffraction and Rutherford backscattering measurements. The variation of the broadening parameter ? at these interfaces is also discussed.

L. E. A. Berlouis; L. M. Peter; M. G. Astles; J. Gough; R. G. Humphreys; S. J. C. Irvine; V. Steward

1987-01-01T23:59:59.000Z

162

Impact of Prior Seasonal H3N2 Influenza Vaccination or Infection on Protection and Transmission of Emerging Variants of Influenza A(H3N2)v Virus in Ferrets  

Science Journals Connector (OSTI)

...Emerging Variants of Influenza A(H3N2)v Virus in Ferrets Katherine V. Houser a b Melissa B. Pearce a Jacqueline M. Katz a Terrence...infection. J. Virol. 75 :5141-5150. 21. Harvey, R , JX Wheeler, CL Wallis, JS Robertson, and OG Engelhardt. 2008. Quantitation...

Katherine V. Houser; Melissa B. Pearce; Jacqueline M. Katz; Terrence M. Tumpey

2013-10-02T23:59:59.000Z

163

NETL: Hg Control – The Effects on By-products: What Do We Know and Where  

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

Hg Control – The Effects on By-products: Hg Control – The Effects on By-products: What Do We Know and Where Do We Go? Table of Contents Foreword Disclaimer Papers and Presentations Introductions Field Demonstrations Laboratory Studies Disclaimer This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government or any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof.

164

Report on International Collaboration Involving the FE Heater and HG-A Tests at Mont Terri  

SciTech Connect (OSTI)

Nuclear waste programs outside of the US have focused on different host rock types for geological disposal of high-level radioactive waste. Several countries, including France, Switzerland, Belgium, and Japan are exploring the possibility of waste disposal in shale and other clay-rich rock that fall within the general classification of argillaceous rock. This rock type is also of interest for the US program because the US has extensive sedimentary basins containing large deposits of argillaceous rock. LBNL, as part of the DOE-NE Used Fuel Disposition Campaign, is collaborating on some of the underground research laboratory (URL) activities at the Mont Terri URL near Saint-Ursanne, Switzerland. The Mont Terri project, which began in 1995, has developed a URL at a depth of about 300 m in a stiff clay formation called the Opalinus Clay. Our current collaboration efforts include two test modeling activities for the FE heater test and the HG-A leak-off test. This report documents results concerning our current modeling of these field tests. The overall objectives of these activities include an improved understanding of and advanced relevant modeling capabilities for EDZ evolution in clay repositories and the associated coupled processes, and to develop a technical basis for the maximum allowable temperature for a clay repository. The R&D activities documented in this report are part of the work package of natural system evaluation and tool development that directly supports the following Used Fuel Disposition Campaign (UFDC) objectives: ? Develop a fundamental understanding of disposal-system performance in a range of environments for potential wastes that could arise from future nuclear-fuel-cycle alternatives through theory, simulation, testing, and experimentation. ? Develop a computational modeling capability for the performance of storage and disposal options for a range of fuel-cycle alternatives, evolving from generic models to more robust models of performance assessment. For the purpose of validating modeling capabilities for thermal-hydro-mechanical (THM) processes, we developed a suite of simulation models for the planned full-scale FE Experiment to be conducted in the Mont Terri URL, including a full three-dimensional model that will be used for direct comparison to experimental data once available. We performed for the first time a THM analysis involving the Barcelona Basic Model (BBM) in a full three-dimensional field setting for modeling the geomechanical behavior of the buffer material and its interaction with the argillaceous host rock. We have simulated a well defined benchmark that will be used for codeto- code verification against modeling results from other international modeling teams. The analysis highlights the complex coupled geomechanical behavior in the buffer and its interaction with the surrounding rock and the importance of a well characterized buffer material in terms of THM properties. A new geomechanical fracture-damage model, TOUGH-RBSN, was applied to investigate damage behavior in the ongoing HG-A test at Mont Terri URL. Two model modifications have been implemented so that the Rigid-Body-Spring-Network (RBSN) model can be used for analysis of fracturing around the HG-A microtunnel. These modifications are (1) a methodology to compute fracture generation under compressive stress conditions and (2) a method to represent anisotropic elastic and strength properties. The method for computing fracture generation under compressive load produces results that roughly follow trends expected for homogeneous and layered systems. Anisotropic properties for the bulk rock were represented in the RBSN model using layered heterogeneity and gave bulk material responses in line with expectations. These model improvements were implemented for an initial model of fracture damage at the HG-A test. While the HG-A test model results show some similarities with the test observations, differences between the model results and observations remain.

Houseworth, Jim; Rutqvist, Jonny; Asahina, Daisuke; Chen, Fei; Vilarrasa, Victor; Liu, Hui-Hai; Birkholzer, Jens

2013-11-06T23:59:59.000Z

165

Boltzmann Equation Analysis of Electron Transport in a N2O2 Streamer Discharge Sasa Dujko1;2;3  

E-Print Network [OSTI]

Boltzmann Equation Analysis of Electron Transport in a N2­O2 Streamer Discharge Sasa Dujko1;2;3�, P. O. Box 68, Zemun, Belgrade 11080, Serbia 3 ARC Centre for Antimatter­Matter Studies, School of the reduced electric field. The fluid model is coupled with the Monte Carlo model via a model interface

Ebert, Ute

166

Ann. Polon. Math., 95, N2, (2009), 135-139. A DSM proof of surjectivity of monotone  

E-Print Network [OSTI]

Ann. Polon. Math., 95, N2, (2009), 135-139. 1 #12;A DSM proof of surjectivity of monotone nonlinear. The proof is based on the Dynamical Systems Method (DSM). MSC: 47A52 Key words: dynamical systems method of this result. It is based on the Dynamical Systems Method (DSM) developed in [2]. Theorem 1.1. Assume that F

167

Jeffrey R. Row Environment and Resource Studies, University of Waterloo, Waterloo, Ontario, Canada, N2L 3G1  

E-Print Network [OSTI]

, N2L 3G1 Website: http://jeffrow.ca · Email: jeff.row@me.com · Phone: 1-416-399-3066 1 Education 2006 and population structure of foxsnakes across spatial and temporal scales. 2003-2005 M.Sc. Biology, University (Lampropeltis triangulum). 1997-2001 B.Sc. Environmental Biology, Queen's University, Kingston, Ontario. 2

Row, Jeffrey R.

168

The role of N2O derived from crop-based biofuels, and from agriculture in general, in Earth's climate  

Science Journals Connector (OSTI)

...The role of N2O derived from crop-based biofuels, and from agriculture in general, in Earth's...factor (EF) of 3-5%, and applied it to biofuel production. For first-generation biofuels, e.g. biodiesel from rapeseed and bioethanol...

2012-01-01T23:59:59.000Z

169

N2O emission from a combined ex-situ nitrification and in-situ denitrification bioreactor landfill  

Science Journals Connector (OSTI)

Abstract A combined process comprised of ex-situ nitrification in an aged refuse bioreactor (designated as A bioreactor) and in-situ denitrification in a fresh refuse bioreactor (designated as F bioreactor) was constructed for investigating N2O emission during the stabilization of municipal solid waste (MSW). The results showed that N2O concentration in the F bioreactor varied from undetectable to about 130 ppm, while it was much higher in the A bioreactor with the concentration varying from undetectable to about 900 ppm. The greatly differences of continuous monitoring of N2O emission after leachate cross recirculation in each period were primarily attributed to the stabilization degree of MSW. Moreover, the variation of N2O concentration was closely related to the leachate quality in both bioreactors and it was mainly affected by the COD and COD/TN ratio of leachate from the F bioreactor, as well as the DO, ORP, and NO3?-N of leachate from the A bioreactor.

Ya-nan Wang; Ying-jie Sun; Lei Wang; Xiao-jie Sun; Hao Wu; Rong-xing Bian; Jing-jing Li

2014-01-01T23:59:59.000Z

170

UNIVERSITY OF CALIFORNIA, SAN DIEGO Continuous Measurements of Atmospheric Ar/N2 as a Tracer of  

E-Print Network [OSTI]

........................... 31 2.3 Results ................................................. 34 2.3.1 Comparison of station measurements and model predictions ....................... 34 2.3.2 Station-station comparisons ........................................... 74 #12;v 3.2 The seasonal cycle in (Ar/N2): A transient model of air-sea gas flux

Keeling, Ralph

171

Memorandum, CH2M HG Idaho, LLC, Request for Variance to Title 10 Code of Federal Regulations part 851, "Worker Safety and Health"  

Broader source: Energy.gov [DOE]

CH2M HG Idaho, LLC, Request for Variance to Title 10 Code of Federal Regulations part 851, "Worker Safety and Health"

172

Microsoft Word - Updated netl Hg program white paper v.1 July2008.doc  

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

08 1 08 1 An Update on DOE/NETL's Mercury Control Technology Field Testing Program Thomas J. Feeley, III 1 and Andrew P. Jones 2 1 U.S. Department of Energy, National Energy Technology Laboratory 2 Science Applications International Corporation The U.S. Department of Energy's National Energy Technology Laboratory (NETL), under the Office of Fossil Energy's Innovations for Existing Plants (IEP) Program, manages the premier mercury (Hg) research and development (R&D) program for coal- fired power generation facilities in the world. Working collaboratively with the U.S. Environmental Protection Agency (EPA), the Electric Power Research Institute (EPRI), power plant operators, state and local agencies, and a host of research organizations

173

Abundance analysis of SB2 binary stars with HgMn primaries  

E-Print Network [OSTI]

We present a short review of the abundances in the atmospheres of SB2 systems with Mercury-Manganese (HgMn) primaries. Up to now a careful study has been made for both components of 8 out of 17 known SB2 binaries with orbital periods shorter than 100 days and mass ratio ranging from 1.08 to 2.2. For all eight systems we observe a lower Mn abundance in the secondary's atmospheres than in the primary's. Significant difference in the abundances is also found for some peculiar elements such as Ga, Xe, Pt. All secondary stars with effective temperatures less than 10000 K show abundance characteristics typical of the metallic-line stars.

T. Ryabchikova

1998-05-06T23:59:59.000Z

174

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

E-Print Network [OSTI]

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

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

2007-01-23T23:59:59.000Z

175

Analyses spectroscopiques d'un plasma CO2-N2 (97%-3%), de type atmosphre martienne, par torche ICP  

E-Print Network [OSTI]

Analyses spectroscopiques d'un plasma CO2-N2 (97%-3%), de type atmosphère martienne, par torche ICP couplage inductif, fonctionnant à la pression atmosphérique, est utilisée pour créer un plasma à partir d Electrique et Plasmas Thermiques, CNRS, 24 Av. des Landais, F63177 Aubière cedex,France, (2) Laboratoire d

Boyer, Edmond

176

N=2 supersymmetric a=4-Korteweg-de Vries hierarchy derived via Gardner's deformation of Kaup-Boussinesq equation  

SciTech Connect (OSTI)

We consider the problem of constructing Gardner's deformations for the N=2 supersymmetric a=4-Korteweg-de Vries (SKdV) equation; such deformations yield recurrence relations between the super-Hamiltonians of the hierarchy. We prove the nonexistence of supersymmetry-invariant deformations that retract to Gardner's formulas for the Korteweg-de Vries (KdV) with equation under the component reduction. At the same time, we propose a two-step scheme for the recursive production of the integrals of motion for the N=2, a=4-SKdV. First, we find a new Gardner's deformation of the Kaup-Boussinesq equation, which is contained in the bosonic limit of the superhierarchy. This yields the recurrence relation between the Hamiltonians of the limit, whence we determine the bosonic super-Hamiltonians of the full N=2, a=4-SKdV hierarchy. Our method is applicable toward the solution of Gardner's deformation problems for other supersymmetric KdV-type systems.

Hussin, V. [Departement de Mathematiques et de Statistique, Universite de Montreal, C.P. 6128, succ. Centre-ville, Montreal, Quebec H3C 3J7 (Canada); Kiselev, A. V. [Mathematical Institute, University of Utrecht, P.O. Box 80.010, 3508 TA Utrecht (Netherlands); Krutov, A. O. [Department of Higher Mathematics, Ivanovo State Power University, 34 Rabfakovskaya str., Ivanovo 153003 (Russian Federation); Wolf, T. [Department of Mathematics, Brock University, 500 Glenridge Avenue, St. Catharines, Ontario L2S 3A1 (Canada)

2010-08-15T23:59:59.000Z

177

Comparison of the optoacoustic and Hg tracer methods for the study of energy-transfer processes in gas mixtures  

SciTech Connect (OSTI)

Rates of energy transfer from vibrationally excited SF/sub 6/ and pentafluorobenzene to argon in the gas phase have been studied by using the Hg tracer technique and time-resolved optoacoustics. These two techniques which rely on fundamentally different physical principles were found to give equivalent results. The implications for the study of energy-transfer processes in gas mixtures are discussed.

Wallington, T.J.; Braun, W.; Beck, K.M.; Gordon, R.J.

1988-06-30T23:59:59.000Z

178

Role of step roughening in the formation of Ce silicide H.G. Lee a,b  

E-Print Network [OSTI]

Role of step roughening in the formation of Ce silicide on Si(111) H.G. Lee a,b , D. Lee a , S. Kim, and then diffuse toward the step edges whilst forming a more stable Ce silicide. The step roughening at the step at the same temperature. Ã? 2005 Elsevier B.V. All rights reserved. Keywords: Step roughening; STM; XPS

Kim, Sehun

179

Synthesis, structure, and properties of the high-temperature superconductor HgBa2CuO4+?  

Science Journals Connector (OSTI)

We report here the attempted synthesis of (Hg1-xCuy)Ba2CuO4+? (0?x?0.2, 0?y?0.2, y?x) and the results of a detailed characterization of the structural and superconducting properties of the resulting samples. Rietveld refinement of powder x-ray-diffraction data collected on all 15 samples synthesized found no partial Cu occupancy of the Hg site. We therefore conclude that for these samples no solid solution exists and the superconducting phase is simply HgBa2CuO4+?. Only one interstitial oxygen position O(3) was found, located exactly at the center of the Hg plane. An analysis of the structural refinements has produced a number of correlations between the exact location of the Ba2+ cation within the unit cell and a number of important superconducting parameters; these include the occupancy of the O(3) site, the extent of oxidation of the CuO2 planes, and the magnetic penetration depth.

J. P. Hodges; I. Gameson; P. P. Edwards; A. P. Kharel; A. Porch

1997-05-01T23:59:59.000Z

180

Exploiting the Higher Specificity of Silver Amalgamation: Selective Detection of Mercury(II) by Forming Ag/Hg Amalgam  

E-Print Network [OSTI]

, 32611-7200, United States *S Supporting Information ABSTRACT: Heavy metal ion pollution poses severe and biological samples. Contamination of the environment with heavy metal ions has been an important concern selective for Hg2+ and does not respond to other metal ions with up to millimolar concentration levels

Tan, Weihong

Note: This page contains sample records for the topic "n2 h2s hg" 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

Wavelengths and oscillator strengths of Xe II from the UVES spectra of four HgMn stars  

E-Print Network [OSTI]

In spite of large overabundances of Xe II observed in numerous mercury-manganese (HgMn) stars, Xe II oscillator strengths are only available for a very limited number of transitions. As a consequence, several unidentified lines in the spectra of HgMn stars could be due to Xe II. In addition, some predicted Xe II lines are redshifted by about 0.1 A from stellar unidentified lines, raising the question about the wavelength accuracy of the Xe II line data available in the literature. For these reasons we investigated the Xe II lines lying in the 3900-4521 A, 4769-7542 A, and 7660-8000 A spectral ranges of four well-studied HgMn stars. We compared the Xe II wavelengths listed in the NIST database with the position of the lines observed in the high-resolution UVES spectrum of the xenon-overabundant, slowly rotating HgMn stars HR 6000, and we modified them when needed. We derived astrophysical oscillator strengths for all the Xe II observed lines and compared them with the literature values, when available. In this...

Yüce, K; Hubrig, S

2011-01-01T23:59:59.000Z

182

Nuclear shape coexistence: A study of the even-even Hg isotopes using the interacting boson model with configuration mixing  

E-Print Network [OSTI]

Background: The Po, Pb, Hg, and Pt region is known for the presence of coexisting structures that correspond to different particle-hole configurations in the Shell Model language or equivalently to nuclear shapes with different deformation. Purpose: We intend to study the configuration mixing phenomenon in the Hg isotopes and to understand how different observables are influenced by it. Method: We study in detail a long chain of mercury isotopes, $^{172-200}$Hg, using the interacting boson model with configuration mixing. The parameters of the Hamiltonians are fixed through a least square fit to the known energies and absolute B(E2) transition rates of states up to $3$ MeV. Results: We obtained the IBM-CM Hamiltonians and we calculate excitation energies, B(E2)'s, quadrupole shape invariants, wave functions, isotopic shifts, and mean field energy surfaces. Conclusions: We obtain a fairly good agreement with the experimental data for all the studied observables and we conclude that the Hamiltonian and the states we obtain constitute a good approximation to the Hg isotopes.

J. E. Garcia-Ramos; K. Heyde

2013-12-17T23:59:59.000Z

183

Influence of propane on CO2/CH4 and N2/CH4 separations in CHA zeolite membranes  

Science Journals Connector (OSTI)

Abstract Two types of CHA zeolite membranes (SAPO-34, SSZ-13) were used for CO2/CH4, N2/CH4, and CO2/i-butane separations at both low (270 and 350 kPa) and high (1.73 MPa) pressures. The SSZ-13 membranes were more selective, with CO2/CH4 separation selectivities as high as 280 and N2/CH4 separation selectivities of 12 at 270 kPa feed pressure. For both types of membranes, selectivities and permeances decreased as the feed pressure increased. The CO2/i-butane separation selectivities were greater than 500,000 for SAPO-34 membranes, indicating extremely low densities of defects because i-butane is too large to enter the CHA pores. The CO2/i-butane selectivities were smaller for SSZ-13 membranes (2,800–20,000), in part because the SSZ-13 layer was on the outside of the porous mullite tubes and sealing the membrane on the zeolite surface was more difficult than for the SAPO-34 membranes that were grown on the inside of glazed alumina tubes. Propane, in feed concentrations from 1 to 9%, significantly influenced separations by decreasing permeances in most cases. The effect was larger for N2/CH4 than for CO2/CH4 mixtures, apparently because the more strongly-adsorbing CO2 competes better than N2 with propane for adsorption sites. Although propane caused permeances to decrease significantly over time, selectivities decreased much less. Propane decreased permeances more for SAPO-34 membranes than for SSZ-13 membranes at 350 kPa, and at high pressure propane even increased CO2 permeances and decreased CH4 permeances in SSZ-13 membranes, thus significantly increasing CO2/CH4 selectivities. Propane permeances reached steady state relatively quickly because its permeation was mostly through defects, but CO2, N2, and CH4 permeances did not stabilize in the presence of propane, even after seven days. The effects of propane were reversible when it was removed from the feed and the membranes were heated.

Ting Wu; Merritt C. Diaz; Yihong Zheng; Rongfei Zhou; Hans H. Funke; John L. Falconer; Richard D. Noble

2015-01-01T23:59:59.000Z

184

Removal of elemental mercury (Hg(0)) by nanosized V{sub 2}O{sub 5}/TiO{sub 2} catalysts  

SciTech Connect (OSTI)

Novel reactive nanosized V{sub 2}O{sub 5}/TiO{sub 2} catalysts (aerogel, xerogel, and impregnated catalysts) for the removal of Hg{sup 0} and their synthesis methods have been introduced in this research. Aerogel catalyst has the highest surface area among the catalysts synthesized in this research and contained reactive monovanadates on its surfaces resulting in higher reactivity for the Hg{sup 0} removal than impregnated and selective catalytic reduction catalysts. XPS analyses on the surfaces of nanosized catalysts after the removal of Hg{sup 0} suggest that adsorbed Hg{sup 0} oxidatively transformed to Hg{sup O} by surface vanadates (mono- and poly vanadates), consistent with the Mars-Maessen mechanism. Early column breakthrough has been observed at temperatures above 300{sup o}C due mainly to the desorption of Hg{sup 0} from the catalyst surfaces. The decrease in Hg{sup 0} concentration and increase in catalyst content in a column reactor have increased the removal of Hg{sup 0}, indicating that the removal is a heterogeneous surface-limited reaction. At 400{sup o}C, the catalysts under air flow have shown a higher Hg{sup 0} removal because gas-phase oxygen from the flow could provide an oxygen-rich environment for producing more oxidized vanadate species on their surfaces. No significant difference in the Hg{sup 0} removal between different gas types (nitrogen and air) has been observed at 100{sup o}C. 27 refs., 5 figs.

Lee, W.; Bae, G.N. [Korea Advanced Institute of Science and Technology, Daejeon (Republic of Korea)

2009-03-01T23:59:59.000Z

185

ICARUS91, 220--233(1991) Possible Microwave Absorption by H2S Gas in Uranus' and  

E-Print Network [OSTI]

, University of Michigan, Ann Arbor, Michigan 48109 ReceivedMay25, 1990;revisedFebruary12, 1991 We present new the solar sulfur elemental ratio, and that the S/Nratio must exceed 5 x the solar ratio. Our calculations by a factor of -50 compared to the solar N value throughout the region of the atmosphere probed at centimeter

Atreya, Sushil

186

Combined Theoretical and Experimental Investigation and Design of H2S Tolerant Anode for Solid Oxide Fuel Cells  

SciTech Connect (OSTI)

A solid oxide fuel cell (SOFC) is a high temperature fuel cell and it normally operates in the range of 850 to 1000 C. Coal syngas has been considered for use in SOFC systems to produce electric power, due to its high temperature and high hydrogen and carbon monoxide content. However, coal syngas also has contaminants like carbon dioxide (CO{sub 2}) and hydrogen sulfide (H{sub 2}S). Among these contaminants, H{sub 2}S is detrimental to electrode material in SOFC. Commonly used anode material in SOFC system is nickel-yttria stabilized zirconia (Ni-YSZ). The presence of H{sub 2}S in the hydrogen stream will damage the Ni anode and hinder the performance of SOFC. In the present study, an attempt was made to understand the mechanism of anode (Ni-YSZ) deterioration by H{sub 2}S. The study used computation methods such as quantum chemistry calculations and molecular dynamics to predict the model for anode destruction by H{sub 2}S. This was done using binding energies to predict the thermodynamics and Raman spectroscopy to predict molecular vibrations and surface interactions. On the experimental side, a test stand has been built with the ability to analyze button cells at high temperature under syngas conditions.

Gerardine G. Botte; Damilola Daramola; Madhivanan Muthuvel

2009-01-07T23:59:59.000Z

187

A dsorption of H2 S or SO2 on an activated carbon cloth modified by ammonia treatment  

E-Print Network [OSTI]

Recent studies have reported that activated carbon fibers, such as PAN-ACF [1] or Nomex-ACF [2], have for the recovery of sulfuric acid compared to granular activated carbon because the diffusion of sulfuric acid rarely been investigated to improve the performance of activated carbon fibers for the removal of SO2

Paris-Sud XI, Université de

188

SYNTHESIS AND CHARACTERIZATION OF CO-AND H2S-TOLERANT ELECTROCATALYSTS FOR PEM FUEL CELL  

SciTech Connect (OSTI)

The present state-of-art Proton Exchange Membrane Fuel Cell (PEMFC) technology is based on platinum (Pt) as a catalyst for both the fuel (anode) and air (cathode) electrodes. This catalyst is highly active but susceptible to poisoning by CO, which may be present in the H{sub 2}-fuel used or may be introduced during the fuel processing. Presence of trace amount of CO and H{sub 2}S in the H{sub 2}-fuel poisons the anode irreversibly and decreases the performance of the PEMFCs. In an effort to reduce the Pt-loading and improve the PEMFC performance, we propose to synthesize a number of Pt-based binary, ternary, and quaternary electrocatalysts using Ru, Mo, Ir, Ni, and Co as a substitute for Pt. By fine-tuning the metal loadings and compositions of candidate electrocatalysts, we plan to minimize the cost and optimize the catalyst activity and performance in PEMFC. The feasibility of the novel electrocatalysts will be demonstrated in the proposed effort with gas phase CO and H{sub 2}S concentrations typical of those found in reformed fuel gas with coal/natural gas/methanol feedstocks. During this reporting period several bi-metallic electrocatalysts were synthesized using ultra-sonication. These catalysts (Pt/Ru, Pt/Mo and Pt/Ir) were tested in MEAs. From Galvonstatic study the catalytic activity was found in the order of: Pt/Ru/C > Pt/Mo/C > Pt/Ir/C. It appears that electrocatalysts prepared by ultra-sonication process are more active compared to the conventional technique. Work is in progress to further study these catalysts for CO-tolerance in PEMFC and identify potential candidate metals for synthesis of tri-metallic electrocatalysts.

Shamsuddin Ilias

2005-03-29T23:59:59.000Z

189

Synthesis and Characterization of CO-and H2S-Tolerant Electrocatalysts for PEM Fuel Cell  

SciTech Connect (OSTI)

The present state-of-art Proton Exchange Membrane Fuel Cell (PEMFC) technology is based on platinum (Pt) as a catalyst for both the fuel (anode) and air (cathode) electrodes. This catalyst is highly active but susceptible to poisoning by CO, which may be present in the H{sub 2}-fuel used or may be introduced during the fuel processing. Presence of trace amount of CO and H{sub 2}S in the H{sub 2}-fuel poisons the anode irreversibly and decreases the performance of the PEMFCs. In an effort to reduce the Pt-loading and improve the PEMFC performance, we propose to synthesize a number of Pt-based binary, ternary, and quaternary electrocatalysts using Ru, Mo, Ir, Ni, and Co as a substitute for Pt. By fine-tuning the metal loadings and compositions of candidate electrocatalysts, we plan to minimize the cost and optimize the catalyst activity and performance in PEMFC. The feasibility of the novel electrocatalysts will be demonstrated in the proposed effort with gas phase CO and H{sub 2}S concentrations typical of those found in reformed fuel gas with coal/natural gas/methanol feedstocks. During this reporting period we synthesized four Pt-based electrocatalysts catalysts (Pt/Ru/Mo/Se, Pt/Ru/Mo/Ir, Pt/Ru/Mo/W, Ptr/Ru/Mo/Co) on Vulcan XG72 Carbon support by both conventional and ultra-sonication method. From current-voltage performance study, the catalytic activity was found in the increasing order of Pt/Ru/Mo/Ir > Pt/Ru/Mo/W > Pt/Ru/Mo/Co > Pt/Ru/MO/Se. Sonication method appears to provide better dispersion of catalysts on carbon support.

Shamsuddin Ilias

2005-12-22T23:59:59.000Z

190

SYNTHESIS AND CHARACTERIZATION OF CO-AND H2S-TOLERANT ELECTROCATALYSTS FOR PEM FUEL CELL  

SciTech Connect (OSTI)

The present state-of-art Proton Exchange Membrane Fuel Cell (PEMFC) technology is based on platinum (Pt) as a catalyst for both the fuel (anode) and air (cathode) electrodes. This catalyst is highly active but susceptible to poisoning by CO, which may be present in the H{sub 2}-fuel used or may be introduced during the fuel processing. Presence of trace amount of CO and H{sub 2}S in the H{sub 2}-fuel poisons the anode irreversibly and decreases the performance of the PEMFCs. In an effort to reduce the Pt-loading and improve the PEMFC performance, we propose to synthesize a number of Pt-based binary, ternary, and quaternary electrocatalysts using Ru, Mo, Ir, Ni, and Co as a substitute for Pt. By fine-tuning the metal loadings and compositions of candidate electrocatalysts, we plan to minimize the cost and optimize the catalyst activity and performance in PEMFC. The feasibility of the novel electrocatalysts will be demonstrated in the proposed effort with gas phase CO and H{sub 2}S concentrations typical of those found in reformed fuel gas with coal/natural gas/methanol feedstocks. During this reporting period several bi-metallic electrocatalysts were synthesized and tested in MEAs. From Galvonstatic study the catalytic activity was found in the order of: Pt/Ru/C > Pt/Mo/C > Pt/Ir/C > Pt/Ni/C > Pt/Cr/C. Work in progress to further study these catalysts for CO-tolerance in PEMFC and identify potential candidate metals for synthesis of trimetallic electrocatalysts.

Shamsuddin Ilias

2004-03-31T23:59:59.000Z

191

Highly Attrition Resistant Zinc Oxide-Based Sorbents for H2S Removal by Spray Drying Technique  

SciTech Connect (OSTI)

Primary issues for the fluidized-bed/transport reactor process are high attrition resistant sorbent, its high sorption capacity and regenerability, durability, and cost. The overall objective of this project is the development of a superior attrition resistant zinc oxide-based sorbent for hot gas cleanup in integrated coal gasification combined cycle (IGCC). Sorbents applicable to a fluidized-bed hot gas desulfurization process must have a high attrition resistance to withstand the fast solid circulation between a desulfurizer and a regenerator, fast kinetic reactions, and high sulfur sorption capacity. The oxidative regeneration of zinc-based sorbent usually initiated at greater than 600 C with highly exothermic nature causing deactivation of sorbent as well as complication of sulfidation process by side reaction. Focusing on solving the sorbent attrition and regenerability of zinc oxide-based sorbent, we have adapted multi-binder matrices and direct incorporation of regeneration promoter. The sorbent forming was done with a spray drying technique that is easily scalable to commercial quantity.

Ryu, C.K.; Lee, J.B.; Ahn, D.H.; Kim, J.J.; Yi, C.K.

2002-09-19T23:59:59.000Z

192

Dimensionality-induced insulator-metal crossover in layered nickelates La{sub n+1}Ni{sub n}O{sub 2n+2} (n = 2, 3, and ?)  

SciTech Connect (OSTI)

Low-valence layered nickelates are a structural analog to the superconducting cuprates and possess interesting properties. In this work, we have systematically studied the electronic structure of La{sub n+1}Ni{sub n}O{sub 2n+2} using first-principles calculations. Our results reveal that the Ni-3d 3z{sup 2} ? r{sup 2} orbital state is active and evolves from discrete molecular levels to a continuous solid band and its filling varies as the dimensionality (or n) increases. The two-dimensional (2D) La{sub 3}Ni{sub 2}O{sub 6} and La{sub 4}Ni{sub 3}O{sub 8} are thus found to have a molecular insulating state. In contrast, the 3D LaNiO{sub 2} is metallic and its 3z{sup 2} ? r{sup 2} band surprisingly becomes 3D due to the Ni-La hybridization, and the La-5d xy orbital also forms a 2D metallic band. Therefore, La{sub n+1}Ni{sub n}O{sub 2n+2} is a dimensionality-controlled insulator-metal crossover system.

Liu, Ting; Jia, Ting; Zhang, Xiaoli [Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031 (China)] [Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031 (China); Wu, Hua, E-mail: wuh@fudan.edu.cn [Laboratory for Computational Physical Sciences (MOE), State Key Laboratory of Surface Physics, and Department of physics, Fudan University, Shanghai 200433 (China)] [Laboratory for Computational Physical Sciences (MOE), State Key Laboratory of Surface Physics, and Department of physics, Fudan University, Shanghai 200433 (China); Zeng, Zhi, E-mail: zzeng@theory.issp.ac.cn [Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031 (China) [Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031 (China); Hefei National Laboratory for Physical Sciences at Microscale, Department of Physics, University of Science and Technology of China, Hefei 230026 (China); Lin, H. Q. [Beijing Computational Science Research Center, Beijing 100084 (China)] [Beijing Computational Science Research Center, Beijing 100084 (China); Li, X. G. [Hefei National Laboratory for Physical Sciences at Microscale, Department of Physics, University of Science and Technology of China, Hefei 230026 (China)] [Hefei National Laboratory for Physical Sciences at Microscale, Department of Physics, University of Science and Technology of China, Hefei 230026 (China)

2014-04-15T23:59:59.000Z

193

The Disilane Chromophore:? Photoelectron and Electronic Spectra of Hexaalkyldisilanes and 1,(n+2)-Disila[n.n.n]propellanes  

Science Journals Connector (OSTI)

The Disilane Chromophore:? Photoelectron and Electronic Spectra of Hexaalkyldisilanes and 1,(n+2)-Disila[n.n.n]propellanes† ... Related information can be gleaned from results11-15 for the parent disilane, Si2H6. ... 18 A synthesis of an unusual tricyclic disilane with approximately eclipsed Si?C bonds, 1,6-disila[4.4.4]propellane (4, Chart 1), was reported in 1971,19 and the authors noted that its absorption maximum is significantly red-shifted relative to that of 1. ...

Deborah L. Casher; Hayato Tsuji; Atsushi Sano; Martins Katkevics; Akio Toshimitsu; Kohei Tamao; Mari Kubota; Tsunetoshi Kobayashi; C. Henrik Ottosson; Donald E. David; Josef Michl

2003-05-01T23:59:59.000Z

194

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

E-Print Network [OSTI]

PHYSICAL REVIEW A VOLUME 36, NUMBER 9 NOVEMBER 1, 1987 Electron-transfer collisions of low-energy multicharged nitrogen ions with H2 and N2 Hua-Ying Wang and D. A. Church Department of Physics, Texas A&M University, College Station, Texas 77843... collision provides a direct and valuable test of a recent calculation 36 4261 1987 The American Physical Society 4262 HUA-YING WANG AND P. A. CHURCH 36 by Gargaud and Mccarroll, ' and the other measure- ments provide insight into the electron transfer...

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

1987-01-01T23:59:59.000Z

195

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

E-Print Network [OSTI]

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

Ujjal Debnath

2015-02-08T23:59:59.000Z

196

Electrolyte electroreflectance study of the effects of anodization and of chemomechanical polish on Hg1?x Cd x Te  

Science Journals Connector (OSTI)

We havw shown that electrolyte electroreflectance (EER) can be used as a sensitive probe to study the effects of processing agents on the near surface bulk. Our results indicate that Br2/methanol may be damaging Hg?annealed materials to a depth of about 600 Angstroms depleting them in Cd and leaving their surfaces covered with a Te?rich layer. While it is possible to remove the damaged layer anodization?dissolution steps our results show that such a procedure must be terminated when the undamaged material has been reached. If it is continued the difference between the rates at which the Cd and Hg diffuse through the oxide would again deplete the interface in Cd.

A. Lastras?Martinez; U. Lee; J. Zehnder; P. M. Raccah

1982-01-01T23:59:59.000Z

197

Electrochemical reductions of Hg(II), ruthenium-nitrosyl complex, chromate, and nitrate in a strong alkaline solution  

SciTech Connect (OSTI)

The electrochemistry of low-level nuclear wastes, the reductions of Hg(II), [RuNO(NO{sub 2}){sub 4}OH]{sup 2{minus}}, CrO{sub 4}{sup 2{minus}}, and NO{sub 3}{sup {minus}} in 1.33 M NaOH solution have been studied primarily at nickel electrodes for electrocatalytic advantages. Hg(II) was reduced to Hg metal [equilibrium potential of 0.099 V vs NHE (normal hydrogen electrode)]. The ruthenium-nitrosyl complex, [RuNO(NO{sub 2}){sub 4}OH]{sup 2{minus}}, was reduced to Ru metal (half-wave potential of {minus}0.38 V vs NHE). Chromate was reduced to chromic hydroxide (equilibrium potential of {minus}0.24 V vs NHE). Nitrate reduction has two different regions of Tafel behavior from which reduction mechanisms are proposed. The exchange current densities for the nitrate reduction at Ni, Pb, Fe, and graphite were measured and the competition of the nitrate reduction with the hydrogen evolution investigated.

Bockris, J.O`M.; Kim, J. [Texas A and M Univ., College Station, TX (United States)

1996-12-01T23:59:59.000Z

198

The discovery of [Ru(NH3)5N2]2+: A case of serendipity and the scientific method  

Science Journals Connector (OSTI)

In this paper the author provides a personal account of the events leading up to the realization [Ru9NH3)5N2]2+ is a real species.

Caesar V. Senoff

1990-01-01T23:59:59.000Z

199

Study on the mechanism of the catalytic conversion of NO x and soot into N2 and CO2 on Fe2O3 in diesel exhaust  

Science Journals Connector (OSTI)

The present study deals with the mechanism of the conversion of NO x and soot into N2 and CO2 on Fe2O3 catalyst. The results of TPO, TRM, DRIFTS and HRTEM examinations suggest a...

H. Bockhorn; S. Kureti; D. Reichert

2007-05-01T23:59:59.000Z

200

Effect of Inoculation with N2-Fixing Spirilla and Azotobacter on Nitrogenase Activity on Roots of Maize Grown Under Subtropical Conditions  

Science Journals Connector (OSTI)

...such as photosynthetic efficiency, trans- VOL. 38...Cairo University, Giza, Egypt, 1967). fixation necessarily...University, Cairo, Egypt. LITERATURE CITED 1...N2-fixing Spirillum in Egypt. Nonsymbiotic Nitrogen...Seminar on Biological Solar Energy Conversion Sys- tems...

N. A. Hegazi; M. Monib; K. Vlassak

1979-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "n2 h2s hg" from the National Library of EnergyBeta (NLEBeta).
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201

Corrosion mitigation of N-(2-hydroxy-3-trimethyl ammonium)propyl chitosan chloride as inhibitor on mild steel  

Science Journals Connector (OSTI)

Abstract The biopolymer N-(2-hydroxy-3-trimethyl ammonium)propyl chitosan chloride (HTACC) was synthesised and its influence as a novel corrosion inhibitor on mild steel in 1 M \\{HCl\\} was studied using gravimetric and electrochemical experiments. The compound obtained was characterised using FTIR and NMR studies. The inhibition efficiency increased with the increase in concentration and reached a maximum of 98.9% at 500 ppm concentration. Polarisation studies revealed that HTACC acts both as anodic and cathodic inhibitor. Electrochemical impedance studies confirmed that the inhibition is through adsorption on the metal surface. The extent of inhibition exhibits a negative trend with increase in temperature. Langmuir isotherm provides the best description on the adsorption nature of the inhibitor. SEM analysis indicated the presence of protective film formed by the inhibitor on the metal surface.

Y. Sangeetha; S. Meenakshi; C. SairamSundaram

2015-01-01T23:59:59.000Z

202

Electrical characteristics of the CdTe-n-CdHgTe structure fabricated in a single molecular-beam epitaxy process  

SciTech Connect (OSTI)

An extraordinary shape of the capacitance-voltage characteristics of CdTe-CdHgTe structures has been detected; these characteristics include a specific 'hump' in the inversion region, the height of which increased severalfold under illumination. Additional measurements using an optical probe, measurements of current-voltage characteristics, and an analysis of the energy-band diagram of the structure showed the following. CdTe, in contrast to CdHgTe, is a p-type semiconductor with an acceptor concentration of 1 x 10{sup 16} cm{sup -3}; there is a hole inversion layer in CdHgTe at the boundary with CdTe, which causes the 'hump'; and the barrier height for holes at the CdTe-Cd{sub 0.43}Hg{sub 0.57}Te interface was determined as 0.13 eV.

Mashukov, Yu. P., E-mail: dr_mashukov@mail.ru; Mikhailov, N. N.; Vasilyev, V. V. [Russian Academy of Sciences, Rzhanov Institute of Semiconductor Physics, Siberian Branch (Russian Federation)

2010-09-15T23:59:59.000Z

203

H.G. Okuno and M. Ali (Eds.): IEA/AIE 2007, LNAI 4570, pp. 444453, 2007. Springer-Verlag Berlin Heidelberg 2007  

E-Print Network [OSTI]

H.G. Okuno and M. Ali (Eds.): IEA/AIE 2007, LNAI 4570, pp. 444­453, 2007. © Springer-Verlag Berlin estimated the individuality of fingerprints [1]. Hong, et al. reviewed performance evaluation for #12

Cho, Sung-Bae

204

A thermodynamic model for calculating nitrogen solubility, gas phase composition and density of the N2–H2O–NaCl system  

Science Journals Connector (OSTI)

A thermodynamic model is presented to calculate N2 solubility in pure water (273–590 K and 1–600 bar) and aqueous NaCl solutions (273–400 K, 1–600 bar and 0–6 mol kg?1) with or close to experimental accuracy. This model is based on a semi-empirical equation used to calculate gas phase composition of the H2O–N2 system and a specific particle interaction theory for liquid phase. With the parameters evaluated from N2–H2O–NaCl system and using a simple approach, the model is extended to predict the N2 solubility in seawater accurately. Liquid phase density of N2–H2O–NaCl system at phase equilibrium and the homogenization pressure of fluid inclusions containing N2–H2O–NaCl can be calculated from this model. A computer code is developed for this model and can be downloaded from the website: www.geochem-model.org/programs.htm.

Shide Mao; Zhenhao Duan

2006-01-01T23:59:59.000Z

205

Physical properties of selected block Argonne Premium bituminous coal related to CO2, CH4, and N2 adsorption  

Science Journals Connector (OSTI)

CO2, CH4, and N2 adsorption and gas-induced swelling were quantified for block Blind Canyon, Pittsburgh #8 and Pocahontas Argonne Premium coals that were dried and structurally relaxed at 75 °C in vacuum. Strain measurements were made perpendicular and parallel to the bedding plane on ~ 7 × 7 × 7 mm3 coal blocks and gravimetric sorption measurements were obtained simultaneously on companion coal blocks exposed to the same gaseous environment. The adsorption amount and strain were determined after equilibration at P  ? 1.8 MPa. There is a strong non-linear correlation between strain and the quantity of gas adsorbed and the results for all gases and coals studied follow a common pattern. The dependence of the coal matrix shrinkage/swelling coefficient (Cgc) on the type and quantity of gas adsorbed is seen by plotting the ratio between the strain and the adsorbate concentration against the adsorbate concentration. In general, Cgc increases with increasing adsorbate concentration over the range of ~ 0.1 to 1.4 mmol/g. Results from the dried block coals are compared to CO2 experiments using native coals with an inherent level of moisture as received. The amount of CO2 adsorbed using native coals (assuming no displacement of H2O by CO2) is significantly less than the dried coals. The gas-induced strain (S) and adsorption amount (M) were measured as a function of time following step changes in CO2, CH4, and N2 pressure from vacuum to 1.8 MPa. An empirical diffusion equation was applied to the kinetic data to obtain the exponent (n) for time dependence for each experiment. The data for all coals were pooled and the exponent (n) evaluated using an ANOVA statistical analysis method. Values for (n) near 0.5 were found to be independent on the coal, the gas or type of measurement (e.g., parallel strain, perpendicular strain, and gas uptake). These data support the use of a Fickian diffusion model framework for kinetic analysis. The kinetic constant k was determined using a unipore diffusion model for each experiment and the data were pooled for ANOVA analysis. For dry coal, statistically significant differences for k were found for the gases (CO2 > N2 > CH4) and coals (Pocahontas >Blind Canyon > Pittsburgh #8) but not for the method of the kinetic measurement (e.g., strain or gas uptake). For Blind Canyon and Pittsburgh #8 coal, the rate of CO2 adsorption and gas-induced strain for dry coal was significantly greater than that of the corresponding native coal. For Pocahontas coal the rates of CO2 adsorption and gas-induced strain for dry and native coal were indistinguishable and may be related to its low native moisture and minimal amount of created porosity upon drying.

S.R. Kelemen; L.M. Kwiatek

2009-01-01T23:59:59.000Z

206

Nuclear structure ''southeast'' of {sup 208}Pb: Isomeric states in {sup 208}Hg and {sup 209}Tl  

SciTech Connect (OSTI)

The nuclear structure of neutron-rich N>126 nuclei has been investigated following their production via relativistic projectile fragmentation of a E/A=1 GeV {sup 238}U beam. Metastable states in the N=128 isotones {sup 208}Hg and {sup 209}Tl have been identified. Delayed {gamma}-ray transitions are interpreted as arising from the decay of I{sup {pi}}=(8{sup +}) and (17/2{sup +}) isomers, respectively. The data allow for the so far most comprehensive verification of the shell-model approach in the region determined by magic numbers Z<82 and N>126.

Al-Dahan, N. [Department of Physics, University of Surrey, Guildford GU2 7XH (United Kingdom); Department of Physics, University of Kerbala, Kerbala (Iraq); Podolyak, Zs.; Regan, P. H.; Alkhomashi, N.; Deo, A. Y.; Farrelly, G.; Steer, S. J.; Cullen, I. J.; Gelletly, W.; Swan, T.; Thomas, J. S.; Walker, P. M. [Department of Physics, University of Surrey, Guildford GU2 7XH (United Kingdom); Gorska, M.; Grawe, H.; Gerl, J.; Pietri, S. B.; Wollersheim, H. J.; Boutachkov, P.; Domingo-Pardo, C.; Farinon, F. [GSI, D-64291 Darmstadt (Germany)] (and others)

2009-12-15T23:59:59.000Z

207

Rigid Holography and Six-Dimensional N=(2,0) Theories on AdS_5 times S^1  

E-Print Network [OSTI]

Field theories on anti-de Sitter (AdS) space can be studied by realizing them as low-energy limits of AdS vacua of string/M theory. In an appropriate limit, the field theories decouple from the rest of string/M theory. Since these vacua are dual to conformal field theories (CFTs), this relates some of the observables of these field theories on AdS to a subsector of the dual CFTs. We exemplify this `rigid holography' by studying in detail the 6d N=(2,0) A_{K-1} superconformal field theory (SCFT) on AdS_5xS^1, with equal radii for AdS_5 and for S^1. We choose specific boundary conditions preserving sixteen supercharges that arise when this theory is embedded into Type IIB string theory on AdS_5xS^5/Z_K. On R^{4,1}xS^1, this 6d theory has a 5(K-1)-dimensional moduli space, with unbroken 5d SU(K) gauge symmetry at (and only at) the origin. On AdS_5xS^1, the theory has a 2(K-1)-dimensional `moduli space' of supersymmetric configurations. We argue that in this case the SU(K) gauge symmetry is unbroken everywhere in...

Aharony, Ofer; Rey, Soo-Jong

2015-01-01T23:59:59.000Z

208

Transformation pathways in high-pressure solid nitrogen: from molecular N$_2$ to polymeric cg-N  

E-Print Network [OSTI]

The transition pathway in high-pressure solid nitrogen from N$_2$ molecular state to polymeric cg-N phase was investigated by means of \\textit{ab initio} molecular dynamics and metadynamics simulations. In our study, we observed a transformation mechanism from molecular $Immm$ phase initiated by formation of $trans$-$cis$ chains. These chains further connected within layers and formed a chain-planar state, which we describe as a mixture of crystalline $trans$-$cis$ chain phase and $planar$ phase (both with $Pnma$ symmetry). This form appeared in molecular dynamics performed at 120 GPa and 1500 K and also in metadynamics run at 110 GPa and 1500 K, in which the chains continued to reorganize further and finally formed cg-N. During various other metadynamics runs, two different phases emerged - molecular $P2_1/c$ and two-three-coordinated chain-like $Cm$. The transformation mechanism leading to cg-N may be characterized as a progressive polymerization process passing throughout several intermediate states of var...

Plašienka, Dusan

2014-01-01T23:59:59.000Z

209

Influence of operating conditions and coal properties on \\{NOx\\} and N2O emissions in pressurized fluidized bed combustion of subbituminous coals  

Science Journals Connector (OSTI)

This experimental study is aimed at finding effects of operating conditions in PFBC on nitrogen oxide emissions for subbituminous coals differing in ash content/composition, combustion/gasification reactivities and in particle size distribution. The experiments have been done on a smaller laboratory apparatus with ID=8 cm. The effects of operating pressure (0.1–1 MPa), temperature of the fluidized bed (800–900 °C), freeboard temperature and oxygen concentration (3–10 vol.%) on the nitrogen oxides emissions are relatively complex, coupled with temperature of burning coal particles. The coal ash content/composition (esp. CaO and Fe2O3) and fly ash freeboard concentration play an important role in formation/destruction chemistry of both NO and N2O. The \\{NOx\\} emissions decrease with increasing operating pressure at the same volumetric oxygen concentration and temperature. Temperature, volatile content, reactivities of coals and ash composition are the most important factors for N2O emissions. The N2O emissions are either almost constant or can exhibit a maximum at increasing operating pressure. Influence of increasing oxygen concentration on \\{NOx\\} and N2O emissions is more pronounced at lower operating pressures, esp. for the less reactive, medium ash coal. The particle size distribution of the coal (influence of coal dust) can cause characteristic changes in \\{NOx\\} and N2O emissions in PFBC, esp. at lower combustion temperatures (800–840 °C). The emission changes are dependent on ash properties/composition.

Karel Svoboda; Michael Poho?elý

2004-01-01T23:59:59.000Z

210

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

E-Print Network [OSTI]

Towards an agronomic assessment of N2O emissions: a case study for arable crops J . W . V a n G r o e n i. Commonly, N2O emissions are expressed as a function of N application rate. This suggests that smaller fertilizer applications always lead to smaller N2O emissions. Here we argue that, because of global demand

van Kessel, Chris

211

Analysis of insulation characteristics of c-C4F8 and N2 gas mixtures by the Monte Carlo method  

Science Journals Connector (OSTI)

The motion of electrons in c-C4F8 and N2 gas mixtures for a pulsed Townsend discharge is simulated by the Monte Carlo method. The effective ionization coefficient, , over the E/N range from 160 to 480?Td is calculated by employing a set of cross sections available in the literature. From the variation curve of with the C4F8 mixture ratio k, the limiting field of the gas mixture at different gas content is determined. The required gas pressure ratios comparable with the insulation property of SF6 and GWP at this gas pressure were also investigated. It is found that the insulation characteristics of the N2 and c-C4F8 gas mixtures are comparable with the N2 and SF6 mixture, but the GWP of the former is significantly lower than that of the latter. Simulation results show excellent agreement with experimental data available in the literature.

Bian-Tao Wu; Deng-Ming Xiao; Zhang-Sheng Liu; Liu-Chun Zhang; Xue-Li Liu

2006-01-01T23:59:59.000Z

212

Hall, Seebeck, and Nernst Coefficients of Underdoped HgBa2CuO4+?: Fermi-Surface Reconstruction in an Archetypal Cuprate Superconductor  

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

Charge-density-wave order has been observed in cuprate superconductors whose crystal structure breaks the square symmetry of the CuO2 planes, such as orthorhombic YBa2Cu3Oy (YBCO), but not so far in cuprates that preserve that symmetry, such as tetragonal HgBa2CuO4+? (Hg1201). We have measured the Hall (RH), Seebeck (S), and Nernst (?) coefficients of underdoped Hg1201 in magnetic fields large enough to suppress superconductivity. The high-field RH(T) and S(T) are found to drop with decreasing temperature and become negative, as also observed in YBCO at comparable doping. In YBCO, the negative RH and S are signatures of a small electron pocket caused by Fermi-surface reconstruction, attributed to charge-density-wave modulations observed in the same range of doping and temperature. We deduce that a similar Fermi-surface reconstruction takes place in Hg1201, evidence that density-wave order exists in this material. A striking similarity is also found in the normal-state Nernst coefficient ?(T), further supporting this interpretation. Given the model nature of Hg1201, Fermi-surface reconstruction appears to be common to all hole-doped cuprates, suggesting that density-wave order is a fundamental property of these materials.

Doiron-Leyraud, Nicolas; Lepault, S.; Cyr-Choinière, O.; Vignolle, B.; Grissonnanche, G.; Laliberté, F.; Chang, J.; Bariši?, N.; Chan, M. K.; Ji, L.; Zhao, X.; Li, Y.; Greven, M.; Proust, C.; Taillefer, Louis

2013-06-01T23:59:59.000Z

213

A common intermediate for N2 formation in enzymes and zeolites: side-on Cu-nitrosyl complexes  

SciTech Connect (OSTI)

Understanding the mechanisms of catalytic processes requires the identification of reaction centers and key intermediates, both of which are often achieved by the use of spectroscopic characterization tools. Due to the heterogeneity of active centers in heterogeneous catalysts, it is frequently difficult to identify the specific sites that are responsible for the overall activity. Furthermore, the simultaneous presence of a large number of surface species on the catalyst surface often poses a great challenge for the unambiguous determination of the relevant species in the reaction mechanism. In contrast, enzymes possess catalytically active centers with precisely defined coordination environments that are only able to accommodate intermediates relevant to the specific catalytic process. Here we show that side-on Cu+-NO+ complexes characterized by high magnetic field solid state magic angle spinning nuclear magnetic resonance (NMR) and Fourier transform infrared (FTIR) spectroscopies are the key intermediates in the selective catalytic reduction of NO over Cu-SSZ-13 zeolite catalysts. Analogous intermediates have been observed and characterized in nitrite reductase enzymes, and shown to be the critical intermediates in the formation of N2 for anaerobic ammonium oxidation reactions.[1] The identification of this key reaction intermediate, combined with the results of our prior kinetic studies, allows us to propose a new reaction mechanism for the selective catalytic reduction of NO with NH3 under oxygen-rich environments over Cu-SSZ-13 zeolites, a key reaction in automotive emission control. The authors acknowledge the US Department of Energy (DOE), Office of Energy Efficiency and Renewable Energy/Vehicle Technologies Program for the support of this work. The research described in this paper was performed at the Environmental Molecular Sciences Laboratory (EMSL), a national scientific user facility sponsored by the DOE’s Office of Biological and Environmental Research and located at Pacific Northwest National Laboratory (PNNL). PNNL is operated for the US DOE by Battelle Memorial Institute.

Kwak, Ja Hun; Lee, Jong H.; Burton, Sarah D.; Lipton, Andrew S.; Peden, Charles HF; Szanyi, Janos

2013-09-16T23:59:59.000Z

214

Novel signal inversion of laser beam induced current for femtosecond-laser-drilling-induced junction on vacancy-doped p-type HgCdTe  

SciTech Connect (OSTI)

In this paper, experimental results of temperature-dependent signal inversion of laser beam induced current (LBIC) for femtosecond-laser-drilling-induced junction on vacancy-doped p-type HgCdTe are reported. LBIC characterization shows that the traps induced by femtosecond laser drilling are sensitive to temperature. Theoretical models for trap-related p-n junction transformation are proposed and demonstrated using numerical simulations. The simulations are in good agreement with the experimental results. The effects of traps and mixed conduction are possibly the main reasons that result in the novel signal inversion of LBIC microscope at room temperature. The research results provide a theoretical guide for practical applications of large-scale array HgCdTe infrared photovoltaic detectors formed by femtosecond laser drilling, which may act as a potential new method for fabricating HgCdTe photodiodes.

Qiu, W. C.; Wang, R.; Xu, Z. J.; Jiang, T. [College of Photoelectric Science and Engineering, National University of Defense Technology, Changsha, Hunan 410073 (China); Cheng, X. A., E-mail: xiang-ai-cheng@126.com [College of Photoelectric Science and Engineering, National University of Defense Technology, Changsha, Hunan 410073 (China); State Key Laboratory of High Performance Computing, National University of Defense Technology, Changsha, Hunan 410073 (China); Science and Technology on Electro-Optical Information Security Control Laboratory, Hebei 065201 (China)

2014-05-28T23:59:59.000Z

215

Electrolyte electroreflectance study of laser annealing effects on the CdTe/Hg0.8Cd0.2Te (111) system  

Science Journals Connector (OSTI)

We have investigated the effects of laser annealing on the CdTe/Hg0.8Cd0.2Te?(111) system by measuring the electrolyte electroreflectance (EER) spectra from both the CdTe layer as well as the interface region. The sample was a Hg0.8Cd0.2Te?(111) single crystal with a 500?Å?thick polycrystallineCdTefilmdeposited on it; a section of the interface was annealed using the neodymium: yttrium aluminum garnet (Nd:YAG) laser 1.06??m line. Our observations indicate the presence of strain due to lattice mismatch at the interface; laser annealing relieves this strain. In addition the annealing also causes the diffusion of Hg ions from the interfacial region into the passivant layer. The changes in the line shapes of the EER spectra also show an improvement in the crystalline quality of the passivant layer.

P. M. Amirtharaj; Fred H. Pollak; J. R. Waterman; P. R. Boyd

1982-01-01T23:59:59.000Z

216

Usage of FTIR for Detection of Isotopicaly Labeled N2O Emitted from Soil D. Harush, A. Shaviv, R. Linker and Y. Dubowski*  

E-Print Network [OSTI]

the emissions of water soluble or gaseous pollutants. Nitrous oxide (N2O), a well-known greenhouse gas. Linker and Y. Dubowski* Faculty of Civil and Environmental Engineering, Technion, Haifa, Israel Nitrogen, is an intermediate nitrogen species of the denitrification process and a by-product of nitrification. The various

Simon, Emmanuel

217

Potentials of Silver and Gold Electrodes of ZrO2-Based Cells in N2+ O2+ CO2+ CO Gas Mixtures  

Science Journals Connector (OSTI)

Steady-state electrode potentials in cells with a ZrO2+ 10 mol % Y2O3electrolyte are measured at 400 to 500°C in nonequilibrium N2+ O2+ CO2+ CO gas mixtures containing 0–3 and 0–10 vol % of CO and O2, respectivel...

G. I. Fadeev; I. D. Remez

2001-05-01T23:59:59.000Z

218

---Home Yahoo! Help My Yahoo! http://asia.news.yahoo.com/041201/kyodo/d86n2bdg0.html  

E-Print Network [OSTI]

- - -Home Yahoo! Help My Yahoo! http://asia.news.yahoo.com/041201/kyodo/d86n2bdg0.html Thursday Reserved. - - -Privacy Policy Terms of Service Community Help 12/1/04 8:49 PMFrance confident of U.S., S

219

Supersaturated N2O in a perennially ice-covered Antarctic lake: Molecular and stable isotopic evidence for a biogeochemical relict  

E-Print Network [OSTI]

Supersaturated N2O in a perennially ice-covered Antarctic lake: Molecular and stable isotopic Abstract The east lobe of Lake Bonney, a permanently ice-covered lake in the McMurdo Dry Valleys2O was produced via incomplete nitrification and has undergone virtually no subsequent consumption

Priscu, John C.

220

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

E-Print Network [OSTI]

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

Milchberg, Howard

Note: This page contains sample records for the topic "n2 h2s hg" from the National Library of EnergyBeta (NLEBeta).
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to obtain the most current and comprehensive results.


221

Sulfurization of a carbon surface for vapor phase mercury removal II: Sulfur forms and mercury uptake  

E-Print Network [OSTI]

promote the formation of organic sulfur and the presence of H2S during the cooling process increased in the presence of H2S was very effective towards Hg uptake in nitrogen. Corre- lation of mercury uptake capacitySulfurization of a carbon surface for vapor phase mercury removal ­ II: Sulfur forms and mercury

Borguet, Eric

222

This chapter is divided into three sections. Section 7.1, `Trends', highlights possible links between factors which may govern the emergence of the HgMn phenomenon  

E-Print Network [OSTI]

Mn stars are represented by filled circles while normal stars are open squares. The solar abundance for HgMn stars are real. When synthesis was performed at solar abundance on the spectra of normal stars temperature. the solar value (Anders and Grevesse 1989) and HR7361 2.5oe m below the solar abundance, weight

Dworetsky, Mike

223

SNS Target Test Facility: Prototype Hg Operations and Remote Handling Tests P. T. Spampinato, T. W. Burgess, J. B. Chesser, V. B. Graves, and S.L. Schrock  

E-Print Network [OSTI]

SNS Target Test Facility: Prototype Hg Operations and Remote Handling Tests P. T. Spampinato, T. W remote handling techniques and tools for replacing target system components. During the past year and analytical data. These included a welded-tube heat exchanger, an electromagnetic flow meter, a hydraulically

McDonald, Kirk

224

Microstructural evolutions in converting epitaxial Tl2Ba2CaCu2Ox thin films to epitaxial HgBa2CaCu2O6+delta thin films  

E-Print Network [OSTI]

Superconducting HgBa2CaCu2O6+delta (Hg-1212) thin films were obtained from Tl2Ba2CaCu2Ox (Tl-2212) precursor films using a cation-exchange process. In this process, Tl cations on the precursor lattice were thermally excited ...

Wu, Judy; Siegal, M. P.; Xie, Y. Y.; Aytug, T.; Fang, L.

2003-02-01T23:59:59.000Z

225

High pressure conversion of \\{NOx\\} and Hg and their capture as aqueous condensates in a laboratory piston-compressor simulating oxy-fuel CO2 compression  

Science Journals Connector (OSTI)

Abstract Oxy-fuel technology for CO2 capture has largely focused on combustion characteristics as a driver towards demonstration. Impurity removal studies typically centre on the how current environmental control units (FGD, SCR, activated carbon beds) operate in oxy-fuel firing. However, it is expected that some removal of \\{NOx\\} and \\{SOx\\} may occur during compression of flue gas through the lead chamber process. Some commercial systems link the capture of mercury to the formation of acid condensates (as a soluble mercury salt). Mercury in compressed flue gas represents a potential corrosion risk in the processing of CO2 from oxy-fuel combustion processes. Gas phase elemental mercury (Hg0) is difficult to remove from the flue gas and the level of cleaning required to prevent corrosion of cryogenic brazed aluminium heat exchangers is uncertain. This work has investigated the behaviour of gaseous Hg0 in pressurised oxy-fuel systems in terms of the potential capture in acidic condensates, interaction with \\{NOx\\} gases and liquid stability on de-pressurisation. The work was undertaken on an adapted laboratory scale three stage axial-piston compressor with gas and liquid sampling at pressures up to 30 bar. The main finding was that gaseous Hg0 reacts readily with NO2 formed from NO oxidation at high pressure. This reaction occurred without the presence of water, either water vapour or liquid water, contrary to speculation in the literature. Without NO2, no capture of Hg0 was observed in the compression system. Overall, the capture of mercury during compression occurred as a consequence of high pressure, longer residence time and concentration of NO2. Capture rates of 100% Hg and 75–83% \\{NOx\\} were measured from the compressor exit at 30 bar g.

Rohan Stanger; Timothy Ting; Terry Wall

2014-01-01T23:59:59.000Z

226

Two-phase Cryogenic Avalanche Detectors with THGEM and hybrid THGEM/GEM multipliers operated in Ar and Ar+N2  

E-Print Network [OSTI]

Two-phase Cryogenic Avalanche Detectors (CRADs) with GEM and THGEM multipliers have become an emerging potential technique for charge recording in rare-event experiments. In this work we present the performance of two-phase CRADs operated in Ar and Ar+N2. Detectors with sensitive area of 10x10 cm2, reaching a litre-scale active volume, yielded gains of the order of 1000 with a double-THGEM multiplier. Higher gains, of about 5000, have been attained in two-phase Ar CRADs with a hybrid triple-stage multiplier, comprising of a double-THGEM followed by a GEM. The performance of two-phase CRADs in Ar doped with N2 (0.1-0.6%) yielded faster signals and similar gains compared to the operation in two-phase Ar. The applicability to rare-event experiments is discussed.

A. Bondar; A. Buzulutskov; A. Dolgov; A. Grebenuk; E. Shemyakina; A. Sokolov; D. Akimov; A. Breskin; D. Thers

2012-10-02T23:59:59.000Z

227

Measurements of linestrengths, N2-, Ar-, He- and self-broadening coefficients of acetylene in the ?4+?5 combination band using a cw quantum cascade laser  

Science Journals Connector (OSTI)

Abstract Linestrengths, N2-, Ar-, He- and self-broadening coefficients of acetylene have been measured at 296 K in the P branch of the ?4+?5 combination band for 25 rotational transitions. The effect of gas temperature is studied over 296–683 K for five transitions to allow the determination of the temperature dependent exponent n for N2- and Ar-broadening coefficients. These measurements were performed using a continuous-wave quantum cascade laser (cw-QCL) operating over 1253–1310 cm?1. Spectroscopic parameters were obtained by fitting absorption spectra using Voigt, Galatry and Rautian profiles. Linestrength and broadening results are compared with previous studies available in literature for the ?4+?5 combination band and other vibrational bands of acetylene.

Muhammad Bilal Sajid; Et-touhami Es-sebbar; Aamir Farooq

2014-01-01T23:59:59.000Z

229

The retrieval of vertical profiles of chlorine source gases and N2O5 from MIPAS-B-92 limb emission spectra  

SciTech Connect (OSTI)

During the European Arctic Stratospheric Ozone Experiment (EASOE) the balloon-borne cryogenic Fourier transform spectrometer MIPAS (Michelson Interferometer for Passive Atmospheric Sounding) recorded several sequences of mid-infrared limb emission spectra, which were used for the retrieval of vertical profiles of CFC-11, CFC-12, HCFC-22, CF4, and N2O5. These gases are characterized by very dense emission bands of unresolved lines. Results are consistent with the current theories of stratospheric dynamics and chemistry.

Clarmann, T.V.; Linden, A.; Wetzel, G.; Oelhaf, H.

1995-01-01T23:59:59.000Z

230

Anisotropic Effect of Cd and Hg Doping on the Pauli Limited Superconductor CeCoIn5  

Science Journals Connector (OSTI)

We studied the effect of impurity on the first order superconducting (SC) transition and the high field-low temperature (HFLT) SC state of CeCoIn5 by measuring the specific heat of CeCo(In1-xCdx)5 with x=0.0011, 0.0022, and 0.0033 and CeCo(In1-xHgx)5 with x=0.000?16, 0.000?32, and 0.000?48 at temperatures down to 0.1 K and fields up to 14 T. Cd substitution rapidly suppresses the crossover temperature T0, where the SC transition changes from second to first order, to T=0??K with x=0.0022 for H?[100], while it remains roughly constant up to x=0.0033 for H?[001]. The associated anomaly of the proposed FFLO state in Hg-doped samples is washed out by x=0.000?48, while remaining at the same temperature, indicating high sensitivity of that state to impurities. We interpret these results as supporting the nonmagnetic, possibly FFLO, origin of the HFLT state in CeCoIn5.

Y. Tokiwa; R. Movshovich; F. Ronning; E. D. Bauer; P. Papin; A. D. Bianchi; J. F. Rauscher; S. M. Kauzlarich; Z. Fisk

2008-07-16T23:59:59.000Z

231

Conductivity of Hg{sub 3}In{sub 2}Te{sub 6} crystals in high electric fields  

SciTech Connect (OSTI)

The effect of electric field and temperature on the conductivity of bulk Hg{sub 3}In{sub 2}Te{sub 6} crystals is investigated. It is shown that the I-V characteristics in high electric fields are of the S type with the effect of switching into a low-resistance state. The critical voltage of transition from the Ohm law to the exponential dependence of the current (I) on the voltage (U) and the threshold voltage of transition into the region of negative differential resistance dU/dI = s< 0 linearly depend on the sample thickness. The activation energies of conductivity in low and high electric fields are determined. It is established that the superlinear portion of the I-V characteristic with dU/dI > 0 is described by the dependence of the type I = I{sub 0} exp(U/U{sub 0}) and caused by the electron transitions from the local centers with the energy level E{sub t} = 0.19 eV.

Grushka, O. G., E-mail: semicon-dpt@chnu.edu.ua; Chupyra, S. M.; Myslyuk, O. M.; Bilichuk, S. V.; Zabolotsky, I. I. [Fedkovich Chernovtsy National University (Ukraine)

2011-01-15T23:59:59.000Z

232

Assessing the N2O/CO2 high pressure separation using ionic liquids with the soft-SAFT EoS  

Science Journals Connector (OSTI)

Abstract The capabilities of the soft-SAFT EoS to accurately describe the thermophysical properties of ionic liquids (ILs) and the phase equilibria of their mixtures with greenhouse gases is extended in this work to address the CO2 and the N2O solubilities in [C4mim]+ \\{ILs\\} from different anion families. In addition to the commonly studied [BF4]? and [NTf2]? anions, the solubility of these gases in \\{ILs\\} with the anions [N(CN)2]?, [SCN]? and [Ac]? is also studied and compared among them, searching for the best system for separation purposes. A coarse-grained molecular model is proposed within the soft-SAFT framework for each newly studied IL based on structural information, guidance obtained from quantum calculations and previous work. The most adequate set of molecular parameters are selected from the \\{ILs\\} density description and from the ability to reproduce the N2O/CO2 solubilities in these \\{ILs\\} at the lowest and highest temperatures for which experimental data are available. A discussion about the association molecular parameters values and their relation with the anion nature is also presented. With these molecular models, the description of the high pressure phase equilibria of the binary systems composed of the two gases and the \\{ILs\\} referred above are described with soft-SAFT for the remaining isotherms. For most systems, the equilibria behavior of the mixtures is predicted without using any binary parameter. When good agreement with the experimental data is not achieved, a single temperature independent binary parameter is enough to allow a good description. Finally, Henry's law constants are calculated from soft-SAFT to evaluate the selectivity of those \\{ILs\\} for the CO2/N2O separation.

Luís M.C. Pereira; Mariana B. Oliveira; Felix Llovell; Lourdes F. Vega; João A.P. Coutinho

2014-01-01T23:59:59.000Z

233

Recent progress in commensurate-incommensurate phase transformations. [Hg/sub 3/-delta AsF/sub 6/; 2H polytype of TaSe/sub 2/  

SciTech Connect (OSTI)

Three topics are discussed. (1) the nature of long wavelength excitations in Hg/sub 3/-delta AsF/sub 6/, where gapless excitations in addition to the conventional acoustic modes are observed. (2) Thiourea, in which new commensurate phases can be induced by an external electric field. (3) Discommensurations in 2HTaSe/sub 2/, where recent electron diffraction and high resolution x-ray data combine with neutron results to establish a quite complex and subtle behavior. 9 figures.

Axe, J.D.

1982-08-01T23:59:59.000Z

234

Relationship Between Onset Thresholds, Trigger Types, and Rotation Shear for the m/n=2/1 Neoclassical Tearing Mode in a High-? Spherical Torus  

SciTech Connect (OSTI)

The onset conditions for the m/n=2/1 neoclassical tearing mode (NTM) are studied in terms of neoclassical drive, triggering instabilities, and toroidal rotation or rotation shear, in the spherical torus NSTX [M. Ono, et al., Nuclear Fusion 40, 557 (2000)]. There are three typical onset conditions for these modes, given in order of increasing neoclassical drive required for mode onset: triggering by energetic particle modes, triggering by edge localized modes, and cases where the modes appear to grow without a trigger. In all cases, the required drive increases with toroidal rotation shear, implying a stabilizing effect from the shear.

Gerhardt, S. P.; Brennan, D. P.; Buttery, R.; La Haye, R. J.; Sabbagh, S.; Strait, E.; Bell, M.; Bell, R.; Fredrickson, E.; Gates, D.; LeBlanc, B.; Menard, J.; Stutman, D.; Tritz, K.; Yuh, H.

2009-02-24T23:59:59.000Z

235

Investigation of the liquid/vapor composition of compressed liquid CO2 with N2 and O2 in integrated pollutant removal systems for coal combustion  

SciTech Connect (OSTI)

Accurate prediction of the processes in Integrated Pollutant Removal (IPR) using compression and condensation of coal combustion products requires an understanding of the liquid/vapor ternary CO2/O2/N2 system. At conditions close to the critical point of CO2 the existing equations of state deviate from the sparse measured results available in the literature. Building on existing data and procedures, the USDOE/Albany Research Center has designed an apparatus for examining compositions in this region. The design of the apparatus and planned initial experiments are presented.

Oryshchyn, Danylo B.; Ochs, Thomas L.; Summers, Cathy A.; Penner, Larry R.; Gerdemann, Stephen J.

2005-01-01T23:59:59.000Z

236

Open chain versus cyclic 14-electron triatomics: molecular structures and vibrational frequencies of P2Si, P2C, SiN2 and Si2S  

Science Journals Connector (OSTI)

Since the studies of Walsh in the 1950s, triatomic molecules have provided a field of investigation for the fundamentals of bonding. A general consensus has been that rings are higher in energy than open chains due to the strain associated with narrow bond angles. The 14-valence-electron triatomics P2Si, P2C, SiN2, and Si2S were investigated using ab initio molecular quantum mechanical methods. Double zeta plus polarization (DZP) and triple zeta plus double polarization (TZ2P) basis sets have been used in conjunction with self-consistent field (SCF), single and double excitation configuration interaction (CISD) and coupled cluster (CCSD) methods. The all third period \\{P2Si\\} and Si2S were found to have rings as their lowest-energy geometries. The ring geometry of P2C is high in energy because it necessitates formation of a carbene. The ring geometry of SiN2 is only about 5 kcal/mol above the linear Si?N?N isomer.

Randall D. Davy; Henry F. Schaefer III

1996-01-01T23:59:59.000Z

237

Air Pollution Grant Ideas Possible air pollutants to study: SO2, H2S, NO2, NH3, CO, CO2, O3.  

E-Print Network [OSTI]

. Nitrogen Dioxide: Nitrogen dioxide (NO2) is one of a group of highly reactive gasses known as "oxides://www.gradko.co.uk/ram/ Gradko tubes - http://www.gradko.co.uk/pdf/Nitrogen_Dioxide.pdf Grants and Funding Allegheny County of nitrogen," or "nitrogen oxides (NOx)." Other nitrogen oxides include nitrous acid and nitric acid. While

Short, Daniel

238

Elevated-Temperature Corrosion of CoCrCuFeNiAl0.5Bx High-Entropy Alloys in Simulated Syngas Containing H2S  

SciTech Connect (OSTI)

High-entropy alloys are formed by synthesizing five or more principal elements in equimolar or near equimolar concentrations. Microstructure of the CoCrCuFeNiAl{sub 0.5}B{sub x} (x = 0, 0.2, 0.6, 1) high-entropy alloys under investigation is composed of a mixture of disordered bcc and fcc phases and borides. These alloys were tested gravimetrically for their corrosion resistance in simulated syngas containing 0, 0.01, 0.1, and 1 % H{sub 2}S at 500 °C. The exposed coupons were characterized using XRD and SEM. No significant corrosion was detected at 500 °C in syngas containing 0 and 0.01 % H{sub 2}S while significant corrosion was observed in syngas containing 0.1 and 1 % H{sub 2}S. Cu{sub 1.96}S was the primary sulfide in the external corrosion scale on the low-boron high-entropy alloys, whereas FeCo{sub 4}Ni{sub 4}S{sub 8} on the high-boron high-entropy alloys. Multi-phase Cu-rich regions in the low-B high-entropy alloys were vulnerable to corrosive attack.

Dogan, Omer N.; Nielsen, Benjamin C.; Hawk, Jeffrey A.

2013-08-01T23:59:59.000Z

239

Caractrisation en bruit des photodiodes P.I.N. Hg1-x Cdx Te 03BB = B. Orsal (*), R. Alabedra (*), C. Maille (*), C. Boisrobert (**), D. Morvan (**), J. Meslage (***) et  

E-Print Network [OSTI]

63 Caractérisation en bruit des photodiodes P.I.N. Hg1-x Cdx Te à 03BB = 1,3 03BCm B. Orsal (*), R montrent que la qualité des contacts des photodiodes de 2e génération est meilleure que celle obtenue sur.I.N. Hg1-xCdxTe photodiodes at 03BB = 1.3 03BCm by measurements of 1/f noise. The devices are manufactured

Paris-Sud XI, Université de

240

Multi-Pollutant Emissions Control: Pilot Plant Study of Technologies for Reducing Hg, SO3, NOx and CO2 Emissions  

SciTech Connect (OSTI)

A slipstream pilot plant was built and operated to investigate technology to adsorb mercury (Hg) onto the existing particulate (i.e., fly ash) by cooling flue gas to 200-240 F with a Ljungstrom-type air heater or with water spray. The mercury on the fly ash was then captured in an electrostatic precipitator (ESP). An alkaline material, magnesium hydroxide (Mg(OH){sub 2}), is injected into flue gas upstream of the air heater to control sulfur trioxide (SO{sub 3}), which prevents acid condensation and corrosion of the air heater and ductwork. The slipstream was taken from a bituminous coal-fired power plant. During this contract, Plant Design and Construction (Task 1), Start Up and Maintenance (Task 2), Baseline Testing (Task 3), Sorbent Testing (Task 4), Parametric Testing (Task 5), Humidification Tests (Task 6), Long-Term Testing (Task 7), and a Corrosion Study (Task 8) were completed. The Mercury Stability Study (Task 9), ESP Report (Task 11), Air Heater Report (Task 12) and Final Report (Task 14) were completed. These aspects of the project, as well as progress on Public Outreach (Task 15), are discussed in detail in this final report. Over 90% mercury removal was demonstrated by cooling the flue gas to 200-210 F at the ESP inlet; baseline conditions with 290 F flue gas gave about 26% removal. Mercury removal is sensitive to flue gas temperature and carbon content of fly ash. At 200-210 F, both elemental and oxidized mercury were effectively captured at the ESP. Mg(OH){sub 2} injection proved effective for removal of SO{sub 3} and eliminated rapid fouling of the air heater. The pilot ESP performed satisfactorily at low temperature conditions. Mercury volatility and leaching tests did not show any stability problems. No significant corrosion was detected at the air heater or on corrosion coupons at the ESP. The results justify larger-scale testing/demonstration of the technology. These conclusions are presented and discussed in two presentations given in July and September of 2005 and are included in Appendices E and F.

Michael L. Fenger; Richard A. Winschel

2005-08-31T23:59:59.000Z

Note: This page contains sample records for the topic "n2 h2s hg" 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

Development and Application of Advanced Models for Steam Hydrogasification: Process Design and Economic Evaluation  

E-Print Network [OSTI]

The enthalpy model for coal and ash, the nonconventional3 H 2 S O 2 N 2 Sand Char Ash Coal Stream Number Within theH2S SO2 SAND MDEA ASH Coal CERT-2 Table E.3. Gasification

Lu, Xiaoming

2012-01-01T23:59:59.000Z

242

Electron-impact excitation from metastable helium: 2t1,3 S?nt1,3 L (L=0, 1, 2; n=2,…,?)  

Science Journals Connector (OSTI)

Integral cross sections for electron-impact excitation from the helium 2 3 S and 2 1 S metastable excited states, to all energetically higher S, P, and D excited states, are reported from threshold to 200 eV. These cross sections have been obtained using the distorted-wave approximation, and are compared to other experimental and theoretical results. Special attention is paid to obtaining an adequate representation for the wave functions of the n 1 S excited states (n=2, 3, and 4). The total integral electronic excitation cross sections from each of these metastable states, summed over n for fixed L of the final state, and then summed over L, are also reported. These results are combined with other cross-section data to obtain the total inelastic integral cross section for inelastic electron scattering from each of these two helium metastable states.

D. C. Cartwright and G. Csanak

1997-03-01T23:59:59.000Z

243

Inexpensive discrete atomistic model technique for studying excitations on infinite disordered media: the case of orientational glass ArN$_2$  

E-Print Network [OSTI]

Excitations of disordered systems such as glasses are of fundamental and practical interest but computationally very expensive to solve. Here we introduce a technique for modeling these excitations in an infinite disordered medium with a reasonable computational cost. The technique relies on a discrete atomic model to simulate the low-energy behavior of an atomic lattice with molecular impurities. The interaction between different atoms is approximated using a spring like interaction based on the Lennard Jones potential but can be easily adapted to other potentials. The technique allows to solve a statistically representative number of samples with a minimum of computational expense, and uses a Monte-Carlo approach to achieve a state corresponding to any given temperature. This technique has already been applied successfully to a problem with interest in condensed matter physics: the solid solution of N$_2$ in Ar.

González-Albuixech, V F

2014-01-01T23:59:59.000Z

244

2659 heat insulation [n] (2)  

Science Journals Connector (OSTI)

constr....(Protection against heat provided by heat-shielding materials in the outer walls of a building to prevent heat build-up in hot regions or in temperate climates during the summer. In tempera...

2010-01-01T23:59:59.000Z

245

6262 swimming pool [n] (2)  

Science Journals Connector (OSTI)

recr. (Pool for swimmers, frequently one structure with descending... swimming center [US] /swimming centre [UK]; opp. ? wading pool

2010-01-01T23:59:59.000Z

246

Acceptor and donor production in Hg b1 s[subscript -x]Cd[subscript x]Te by neutron transmutation doping  

E-Print Network [OSTI]

remains constant during the irradiation, 4. The dopant or oduced i'rom the decay of the pr oduct isot. ope is stable, 5. The effect of bur nup of the product isotopes and the dopants is negligible. With these assumptions and approximations one has... amounts such as Te and Te, and with products arri tting gamma rays with approximately the same ener gy, theoretical methods wer e developed for deter mining acceptor and donor production levels in Hg& xCdxTe based on the simultaneous irradiation of a...

Seager, Kevin Douglas

1985-01-01T23:59:59.000Z

247

Method of controlling the mercury vapor pressure in a photo-chemical lamp or vapor filter used for Hg.sup.196 enrichment  

DOE Patents [OSTI]

The present invention is directed to a method of eliminating the cold spot zones presently used on Hg.sup.196 isotope separation lamps and filters by the use of a mercury amalgams, preferably mercury - indium amalgams. The use of an amalgam affords optimization of the mercury density in the lamp and filter of a mercury enrichment reactor, particularly multilamp enrichment reactors. Moreover, the use of an amalgam in such lamps and/or filters affords the ability to control the spectral line width of radiation emitted from lamps, a requirement for mercury enrichment.

Grossman, Mark W. (Belmont, MA)

1993-01-01T23:59:59.000Z

248

Method of controlling the mercury vapor pressure in a photo-chemical lamp or vapor filter used for Hg[sup 196] enrichment  

DOE Patents [OSTI]

The present invention is directed to a method of eliminating the cold spot zones presently used on Hg[sup 196] isotope separation lamps and filters by the use of a mercury amalgams, preferably mercury - indium amalgams. The use of an amalgam affords optimization of the mercury density in the lamp and filter of a mercury enrichment reactor, particularly multilamp enrichment reactors. Moreover, the use of an amalgam in such lamps and/or filters affords the ability to control the spectral line width of radiation emitted from lamps, a requirement for mercury enrichment.

Grossman, M.W.

1993-02-16T23:59:59.000Z

249

Electroreflectance study of the temperature dependence of the E 1 transition of Hg0.65Cd0.35Te  

Science Journals Connector (OSTI)

We have investigated the temperature dependence of the E 1 optical feature (energy and broadening parameter) of Hg0.65Cd0.35Te using electroreflectance in the metal?insulator?semiconductor configuration. Measurements were made in the temperature range 77–293 K. The observed variation can be fit by either a linear dependence or the empirical Varshni relation [Y.P. Varshni Physica (Utrecht) 3 9 149 (1967)] within experimental error. The obtained linear temperature coefficient for E 1 is compared with previous results. The temperature dependence of the broadening parameter also is discussed.

A. Ksendzov; Fred. H. Pollak; J. A. Wilson; V. A. Cotton

1989-01-01T23:59:59.000Z

250

The influence of the magnetic field on the effect of drag of electrons by phonons in n-Cd{sub x}Hg{sub 1-x}Te  

SciTech Connect (OSTI)

Thermopower in n-Cd{sub 0.2}Hg{sub 0.8}Te (6-100 K) is studied. A large effect of drag of the charge carriers by phonons {alpha}{sub ph} is found. The influence of the magnetic field H on the drag thermopower is considered. It is established that the magnetic field exerts the effect mainly on the electron component of {alpha}{sub ph}. The data are interpreted in the context of the theory taking into account the effect of H on thermopower {alpha}{sub ph}, in which parameter A({epsilon}) proportional to the static force of the drag effect is introduced. By the experimental data {alpha}{sub ph}(T, H), T, and H dependences A({epsilon}) are determined. It is shown that, as H increases, A({epsilon}) sharply decreases. This explains a decrease in {alpha}{sub ph} in the magnetic field, power index k in dependence {alpha}{sub ph} {proportional_to} T{sup -}{kappa}, and narrowing the region of manifestation of the drag effect. It is established that at classically high fields, the drag effect in n-Cd{sub 0.2}Hg{sub 0.8}Te does not vanish.

Aliyev, S. A.; Zulfigarov, E. I.; Selim-Zade, R. I.; Agayev, Z. F., E-mail: agayevz@rambler.ru [National Academy of Sciences of Azerbaijan, Institute of Physics (Azerbaijan)

2009-09-15T23:59:59.000Z

251

Near-Zero Emissions Oxy-Combustion Flue Gas Purification Task 2: SOx/Nox/Hg Removal for High Sulfur Coal  

SciTech Connect (OSTI)

The goal of this project is to develop a near-zero emissions flue gas purification technology for existing PC (pulverized coal) power plants that are retrofitted with oxy-combustion technology. The objective of Task 2 of this project was to evaluate an alternative method of SOx, NOx and Hg removal from flue gas produced by burning high sulfur coal in oxy-combustion power plants. The goal of the program was not only to investigate a new method of flue gas purification but also to produce useful acid byproduct streams as an alternative to using a traditional FGD and SCR for flue gas processing. During the project two main constraints were identified that limit the ability of the process to achieve project goals. 1) Due to boiler island corrosion issues >60% of the sulfur must be removed in the boiler island with the use of an FGD. 2) A suitable method could not be found to remove NOx from the concentrated sulfuric acid product, which limits sale-ability of the acid, as well as the NOx removal efficiency of the process. Given the complexity and safety issues inherent in the cycle it is concluded that the acid product would not be directly saleable and, in this case, other flue gas purification schemes are better suited for SOx/NOx/Hg control when burning high sulfur coal, e.g. this project's Task 3 process or a traditional FGD and SCR.

Nick Degenstein; Minish Shah; Doughlas Louie

2012-05-01T23:59:59.000Z

252

Composition and temperature-induced effects on the phonon spectra of narrow-band-gap Hg1-xCdxTe  

Science Journals Connector (OSTI)

Compositional and temperature-dependent Raman and infrared spectroscopies on the narrow-band-gap II-VI alloy, Hg1-xCdxTe (0?x?0.29), are reported in this paper. Raman measurements over this composition range confirm the two-mode behavior of the optical phonons in the alloy, with the frequency positions exhibiting a monotonic change with the alloy composition x. A resonant enhancement of the HgTe-like forbidden longitudinal-optic mode is observed near the E1 band gap of the alloy. Alloy induced perturbations on the electronic states lead to a smearing and a weakening of the resonance with increasing alloy composition. The optical phonons in this small band-gap alloy exhibit anomalous frequency shifts as a function of temperature vis-à-vis normal wide-band-gap semiconductors. This anomaly is attributed to the strong electron-phonon interaction in narrow-band-gap systems, which overshadows the dominant anharmonic (phonon-phonon) interaction in usual semiconductors. A detailed compositional dependent second-order Raman spectra is also reported.

Shyama Rath, K. P. Jain, S. C. Abbi, C. Julien, and M. Balkanski

1995-12-15T23:59:59.000Z

253

Heterobimetallic complexes of gold and mercury. Syntheses and characterizations of Hg sup II (CH sub 2 P(S)Ph sub 2 ) sub 2 (Au sup I Cl) sub 2 and Hg sup II Au sup I (CH sub 2 P(S)Ph sub 2 ) sub 2 Au sup III Cl sub 4  

SciTech Connect (OSTI)

The trinuclear compound Hg{sup II}(CH{sub 2}P(S)Ph{sub 2}){sub 2}(Au{sup I}Cl){sub 2} (2) was synthesized by the reaction of Hg{sup II}(CH{sub 2}P(S)Ph{sub 2}){sub 2} (1) with 2 equiv of Au(THT)Cl (THT = tetrahydrothiophene) in a CH{sub 2}Cl{sub 2} solution. Oxidation of 2 by 1 equiv of C{sub 6}H{sub 5}ICl{sub 2} yielded the mixed-valence trinuclear compound Hg{sup II}Au{sup I}(CH{sub 2}P(S)Ph{sub 2}){sub 2}Au{sup III}Cl{sub 4} (3). The crystal structures of 2 and 3 were determined by single-crystal X-ray diffraction analyses. 2 and 3 have one-dimensional chain structures in the solid. Crystal data: 2, C{sub 26}H{sub 24}HgAu{sub 2}Cl{sub 2}S{sub 2}P{sub 2}{center dot}{sup 1}/{sub 2}C{sub 5}H{sub 12}, space group P{bar 1}, a = 11.930 (4) {angstrom}, b = 13.452 (4) {angstrom}, c = 10.516 (4) {angstrom}, {alpha} = 108.44 (2){degree}, {beta} = 90.61 (3){degree}, {gamma} = 81.06 (2){degree}, V = 1580.1 (8) {angstrom}{sup 3}, Z = 2, R = 0.0432 and R{sub w} = 0.0489 for refinement of 154 least-squares parameters with 2,744 reflections (F{sub {degree}}{sup 2} {ge} 3{sigma}(F{sub {degree}}{sup 2})); 3, C{sub 26}H{sub 24}HgAu{sub 2}Cl{sub 4}S{sub 2}P{sub 2}{center dot}CH{sub 2}Cl{sub 2}, space group P{bar 1}, a = 10.199 (6) {angstrom}, b = 12.340 (3) {angstrom}, c = 15.064 (4) {angstrom}, {alpha} = 74.17 (2){degree}, {beta} = 82.76 (3){degree}, V = 1,799 (1) {angstrom}{sup 3}, Z = 2, R = 0.0505 and R{sub w} = 0.0501 for refinement of 178 least-squares parameters with 1,680 reflections (F{sub 0}{sup 2} {ge} 3{sigma}(F{sub 0}{sup 2})).

Wang, Suning; Fackler, J.P. Jr. (Texas A M Univ., College Station (USA))

1990-01-01T23:59:59.000Z

254

Remote processing, delivery and injection of H2[15O] produced from a N2/H2 gas target using a simple and compact apparatus  

Science Journals Connector (OSTI)

We report here a simple apparatus for remote trapping and processing of H2[15O] produced from the N2/H2 target. The system performs a three step operation for H2[15O] delivery at the PET imaging facility which includes the following: (i) collecting the radiotracer in sterile water; (ii) adjusting preparation pH through removal of radiolytically produced ammonia, while at the same time adjusting solution isotonicity; and (iii) delivery of the radiotracer preparation to the injection syringe in a sterile and pyrogen-free form suitable for human studies. The processing apparatus is simple, can be remotely operated and fits inside a Capintec Dose Monitoring Chamber for direct measurement of accumulated radioactivity. Using this system, 300 mCi of H2[15O] (15 ?A of 8 MeV D+ on target) is transferred from target through 120 m × 3.18 mm o.d. Impolene tubing to yield 100 mCi of H2[15O] which is isotonic, neutral and suitable for human studies. A remote hydraulically driven system for i.v. injection of the H2[15O] is also described. The device allows for direct measurement of syringe dose while filling, and for easy, as well as safe transport of the injection syringe assembly to the patient's bedside via a shielded delivery cart. This cart houses a hydraulic piston that allows the physician to “manually” inject the radiotracer without directly handling the syringe.

Richard A. Ferrieri; David L. Alexoff; David J. Schlyer; Alfred P. Wolf

1994-01-01T23:59:59.000Z

255

Effect of H2/CO ratio and N2/CO2 dilution rate on laminar burning velocity of syngas investigated by direct measurement and simulation  

Science Journals Connector (OSTI)

Abstract Laminar burning velocities of syngas/air premixed flames, varying with H2/CO ratio (from 5/95 to 75/25) and N2 or CO2 dilution rate (from 0% to 60%), were accurately measured using a Teflon coated Heat Flux burner and OH-PLIF based Bunsen flame method. Experiments were carried out at atmospheric pressure and room temperature, with fuel/air equivalence ratios ranging from fuel-lean to fuel-rich. Coupled with experimental data, three chemical kinetic mechanisms, namely GRI-Mech 3.0, USC Mech II and Davis H2–CO mechanism, were validated. The Davis H2–CO and USC Mech II mechanisms appear to provide a better prediction for the laminar burning velocity. The laminar burning velocity variations with H2 and dilution gas contents were systematically investigated. For given dilution gas fraction, the laminar burning velocity reduction rate was enhanced as H2/CO ratio increasing. Effects of the syngas components and equivalence ratio variation on the concentrations of radical H and OH were also studied. It appears that there is a strong linear correlation between the laminar burning velocity and the maximum concentration of the H radical in the reaction zone for syngas. This characteristic is exclusively different from that in methane air premixed flame. These findings indicated that the high thermal diffusivity of the H radical played an important role in the laminar burning velocity enhancement and affected the laminar burning velocity reduction rate under dilution condition.

Z.H. Wang; W.B. Weng; Y. He; Z.S. Li; K.F. Cen

2014-01-01T23:59:59.000Z

256

E-Print Network 3.0 - aluminum phosphide pc Sample Search Results  

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

HCP CCP PO phosphorus monoxide molecular oxygen Aluminum oxide H2 H2 O H2 S CSi carbon... isocyanide HCl NaCl NaCN N2 O KCl AlCl aluminum monochloride NH2 amidyl radical*...

257

PowerPoint Poster Template  

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

for 6 h. Mn or Fe added by impregnation with nitrates, then calcination. * Synthetic gasifier effluent for adsorption, 23.4% H 2 , 32% CO 2 , 0.1% H 2 S, 5% H 2 O, bal. N 2 -...

258

Born–Oppenheimer breakdown and non-adiabatic lifetimes of rovibrational levels of D2 lying near the n = 2 dissociation limit: Experiment and theory  

Science Journals Connector (OSTI)

The singlet gerade states of the hydrogen molecule are strongly affected by the breakdown of the Born–Oppenheimer approximation. This leads to strong non-adiabatic coupling resulting in large changes of the energies and lifetimes of the quantum levels compared to the values obtained in the Born–Oppenheimer or even the adiabatic levels of approximation. The non-adiabatic calculations of Quadrelli, Dressler, and Wolniewicz (1990) [7] (hereinafter QDW) for the three highest vibrational levels (? = 44, 45, and 46) of the EF 1?g+ state of D2 predicted an enormous increase of the lifetimes upon excitation of just one quantum of rotational motion. However, although our experimental results for these levels just below the n = 2 dissociation limit do show a strong increase in lifetime, the non-adiabatic lifetimes calculated by QDW are longer than experiment by as much as three orders of magnitude. In their work on isotopomers of hydrogen QDW and Yu and Dressler (1994) [5] published extensive summary tables of ab initio non-adiabatic coupling data. We present a technique which allows us to use their summary data to calculate approximate non-adiabatic ab initio lifetimes. The results reconcile our observed lifetimes with the non-adiabatic coupling from those previous ab initio calculations and also provide a detailed quantitative and qualitative understanding of the unusual rotational dependence of the lifetimes of these very highly excited levels. We also test the current technique by calculating the lifetimes of other levels involved in interactions with these EF levels and by calculating the lifetimes of the EF ? = 33 level of H2, for which no corresponding level exists in the Born–Oppenheimer or adiabatic approximations.

Stephen C. Ross; Koichi Tsukiyama

2011-01-01T23:59:59.000Z

259

Structural and electronic properties of Au{sub n?x}Pt{sub x} (n = 2–14; x ? n) clusters: The density functional theory investigation  

SciTech Connect (OSTI)

The structural evolutions and electronic properties of bimetallic Au{sub n–x}Pt{sub x} (n = 2–14; x ? n) clusters are investigated by using the density functional theory (DFT) with the generalized gradient approximation (GGA). The monatomic doping Au{sub n–1}Pt clusters are emphasized and compared with the corresponding pristine Au{sub n} clusters. The results reveal that the planar configurations are favored for both Au{sub n–1}Pt and Au{sub n} clusters with size up to n = 13, and the former often employ the substitution patterns based on the structures of the latter. The most stable clusters are Au{sub 6} and Au{sub 6}Pt, which adopt regular planar triangle (D{sub 3h}) and hexagon-ring (D{sub 6h}) structures and can be regarded as the preferential building units in designing large clusters. For Pt-rich bimetallic clusters, their structures can be obtained from the substitution of Pt atoms by Au atoms from the Pt{sub n} structures, where Pt atoms assemble together and occupy the center yet Au atoms prefer the apex positions showing a segregation effect. With respect to pristine Au clusters, Au{sub n}Pt clusters exhibit somewhat weaker and less pronounced odd-even oscillations in the highest occupied and lowest unoccupied molecular-orbital gaps (HOMO-LUMO gap), electron affinity (EA), and ionization potential (IP) due to the partially released electron pairing effect. The analyses of electronic structure indicate that Pt atoms in AuPt clusters would delocalize their one 6s and one 5d electrons to contribute the electronic shell closure. The sp-d hybridizations as well as the d-d interactions between the host Au and dopant Pt atoms result in the enhanced stabilities of AuPt clusters.

Yuan, H. K.; Kuang, A. L.; Tian, C. L.; Chen, H., E-mail: chenh@swu.edu.cn [School of Physical Science and Technology, Southwest University, Chongqing, 400715 (China)

2014-03-15T23:59:59.000Z

260

Two-fermion–four-boson description of Hg198 within the U?(6/12)?U?(6/4) extended nuclear structure supersymmetry  

Science Journals Connector (OSTI)

Using the U?(6/12)?U?(6/4) extended supersymmetry, we constructed the energy spectrum and electromagnetic transition properties of the supermultiplet member Hg198 with two proton fermions coupled to a neutron boson core. Consistency between the supersymmetric interacting boson fermion fermion approximation (IBFFA) description and the F-spin symmetric interacting boson approximation (IBA-2) description is shown for this two-fermion–N-boson multiplet member. The data of a ?? angular correlation experiment using the HORUS cube ?-ray spectrometer—determining new multipole mixing ratios, level spins, ? transitions, and energy states—shows quite a good agreement, also for the low-energy part of the spectrum, when comparing theoretical predictions and experimental data. This is contrary to the usual assumption that a two-fermion–N-boson constellation should describe just the excited two-quasiparticle states.

C. Bernards; S. Heinze; J. Jolie; C. Fransen; A. Linnemann; D. Radeck

2009-05-11T23:59:59.000Z

Note: This page contains sample records for the topic "n2 h2s hg" 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

High-lying bound Rydberg states of excited Hg(6s6p {sup 3}P{sub 1}) atoms from two-color resonance ionization mass spectroscopy  

SciTech Connect (OSTI)

Mercury isotopes are investigated with two-color resonance ionization mass spectroscopy (RIMS). Isotope shifts, hyperfine structure splittings, and the lifetime of the intermediate 6s6p {sup 3}P{sub 1} state are determined by RIMS. Ion yields at the threshold region in various static electric fields are measured in order to determine an extrapolated ionization energy value at zero field strength. New energy values for high-lying bound 6s nd {sup 3}D (21Hg isotopes are found under field-free conditions and with delayed, pulsed electric field ionization. To the author's knowledge this is the first time that isotopic effects on the ionization energy are deduced from the convergence limit of the Rydberg series.

Bisling, Peter; Dederichs, Jan; Neidhart, Bernd; Weitkamp, Claus [GKSS-Forschungszentrum Geesthacht GmbH, Postfach 11 60, D-21494 Geesthacht (Germany)

1998-12-16T23:59:59.000Z

262

Intramolecular electron transfer in mixed-valence complexes [(NH3)5Ru-L-Ru(NH3)5]5+ (L = N2, pyz, pym, 4,4?-bipy, bpa)  

Science Journals Connector (OSTI)

The dynamics of the intramolecular electron transfer from Ru(II) to Ru(III) in binuclear mixedvalence complexes [(NH3)5Ru-L- Ru(NH3)5]5+ (L = N2,pyz, bipy, pym, bpa) is analyzed by the semiempirical CINDO +...

O. V. Sizova; V. I. Baranovskii; A. I. Panin…

263

Intramolecular electron transfer in mixed-valence complexes [(NH3)5Ru-L-Ru(NH3)5]5+ (L = N2, pyz, pym, 4,4’-bipy, bpa)  

Science Journals Connector (OSTI)

The dynamics of the intramolecular electron transfer from Ru(II) to Ru(III) in binuclear mixed-valence complexes [NH3)5Ru -L-Ru(NH3)5]5+ (L = N2, pyz, bipy, pym, bpa) is analyzed by the semiempiri...

O. V. Sizova; V. I. Baranovskii; A. I. Panin…

2002-02-01T23:59:59.000Z

264

Beyer H.-G., Czeplak G., Terzenbach U., Wald L., 1997. Assessment of the method used to construct clearness index maps for the new european solar radiation atlas (ESRA). Solar Energy, 61, 6, 389-397.  

E-Print Network [OSTI]

clearness index maps for the new european solar radiation atlas (ESRA). Solar Energy, 61, 6, 389 period 1981-1990, the setup of a toolbox to derive the radiation parameters of relevance for solar energy, published in "Solar Energy 61, 6 (1997) 389-397" #12;Beyer H.-G., Czeplak G., Terzenbach U., Wald L., 1997

Paris-Sud XI, Université de

265

Prof. Dr. Uwe Holtz Universitt Bonn Am Hofgarten 15D -53113 Bonn UHoltz@aol.com www.uni-bonn.de/~uholtz1 OECD (Hg.): DAC Peer Review Germany, Paris 2006.4  

E-Print Network [OSTI]

.uni-bonn.de/~uholtz1 6.4.072 3 OECD (Hg.): DAC Peer Review Germany, Paris 2006.4 (www.oecd.org/dataoecd/54 of poorer countries but need for greater strategic selectivity8 9 Germany has never stated a preference in favor of specific groups of countries. Germany admits10 that poorest countries need donors' full support

Franz, Sven Oliver

266

Microsoft Word - Hg.doc  

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

The majority of mercury mine wastes at these sites are present as loose, unconsolidated piles, facilitating the transport of mercury-bearing material downstream into...

267

Time-dependent density-functional theory for molecular processes in strong fields: Study of multiphoton processes and dynamical response of individual valence electrons of N2 in intense laser fields  

E-Print Network [OSTI]

in the exchange ~x!- only limit. In the latter approach @1#, theTime-dependent density-functional theor Study of multiphoton processes and dynam of N2 in inten Xi Chu and Department of Chemistry, University of Kansas, and Kansas Ce ~Received 30 July 2001; pu We...-I CHU PHYSICAL REVIEW A 64 0634041sg 21su 22sg 22su 21pu 43sg 2 . According to the valence bond theory, this molecule has a triple bond formed with 3sg and 1pu electrons. The 3sg orbital is parallel to the internuclear axis and the two degen- erate 1pu...

Chu, Xi; Chu, Shih-I

2001-11-14T23:59:59.000Z

268

Comparison of the efficiency of N2 and NH3 plasma treatments to improve the adhesion of PP films to in situ deposited Al coatings. Study of ageing phenomena in terms of acid-base properties  

Science Journals Connector (OSTI)

This paper reports on the characteristics of polypropylene (PP) treated at two different frequencies, 70 kHz and 13.56 MHz, in two plasma atmospheres, NH3 and N2 plasmas. Chemical modifications created on the plasma-treated material were investigated by different complementary surface analytical techniques (X-ray photoelectron spectroscopy (XPS) and contact angle measurements), which revealed a higher reactivity of the NH3 plasma. The incorporation of nitrogen plays an important role as revealed by the adhesion study of thermally evaporated aluminium with treated PP: the measured peel strengths were two times higher for NH3-treated surfaces than for N2-treated ones, with XPS measurements showing a sharper increase of N/C ratio as a function of treatment time for the former treatment. Ageing of the PP pretreated in NH3 was also studied in terms of surface acid-base properties. The work of adhesion, calculated from contact angle measurements, showed a distinct dependence on the pH value of the test liquids and good correlations were obtained with peel test results. The basic character of the NH3-treated PP disappears with ageing, leading to an amphoteric surface.

M. Tatoulian; F. Arefi-Khonsari; N. Shahidzadeh-Ahmadi; J. Amouroux

1995-01-01T23:59:59.000Z

269

Solvothermal syntheses of three new one-dimensional ternary selenidostannates: [DBNH][M{sub 1/2}Sn{sub 1/2}Se{sub 2}] (M=Mn, Zn, Hg)  

SciTech Connect (OSTI)

Three new ternary selenidostannates [DBNH][M{sub 1/2}Sn{sub 1/2}Se{sub 2}] (M=Mn (1), Zn (2), Hg (3); DBN=1,5-diazabicyclo[4.3.0]non-5-ene) have been synthesized under solvothermal condition. Single crystal X-ray analyses reveal that compounds 1–3 crystallize in the tetragonal space group P4{sub 2}/ncm. The structures of 1–3 feature a similar straight one-dimensional [M{sub 1/2}Sn{sub 1/2}Se{sub 2}]{sub n}{sup n?} chain, which is built up by edge-sharing M{sub 1/2}Sn{sub 1/2}Se{sub 4} tetrahedra. The transition metal ions (e.g. Mn{sup 2+} (1), Zn{sup 2+} (2), Hg{sup 2+} (3)) and Sn{sup 4+} ions are located at the same metal site in a mixed-metal phase with a ratio of 0.5/0.5. The band gaps of compounds 2 (2.42 eV) and 3 (2.46 eV) were calculated from the solid state UV–vis diffuse reflectance spectroscopy. - Graphical abstract: Three new one-dimensional ternary selenidostannates, [DBNH][M{sub 1/2}Sn{sub 1/2}Se{sub 2}] (M=Mn (1), Zn (2), Hg (3); DBN =1,5-diazabicyclo[4.3.0]non-5-ene), have been synthesized under solvothermal condition. Highlights: • Three new one-dimensional ternary selenidostannates. • A mixed-metal phase with a ratio of 0.5/0.5. • Heterometallic chalcogenides.

Xiong, Wei-Wei [School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798 (Singapore); Li, Pei-Zhou [Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371 (Singapore); Zhou, Tian-Hua [School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637459 (Singapore); Zhao, Yanli [Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371 (Singapore); Xu, Rong [School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637459 (Singapore); Zhang, Qichun, E-mail: qczhang@ntu.edu.sg [School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798 (Singapore)

2013-08-15T23:59:59.000Z

270

Near-Zero Emissions Oxy-Combustion Flue Gas Purification Task 3: SOx/NOx/Hg Removal for Low Sulfur Coal  

SciTech Connect (OSTI)

The goal of this project was to develop a near-zero emissions flue gas purification technology for existing PC (pulverized coal) power plants that are retrofitted with oxycombustion technology. The objective of Task 3 of this project was to evaluate an alternative method of SOx, NOx and Hg removal from flue gas produced by burning low sulfur coal in oxy-combustion power plants. The goal of the program was to conduct an experimental investigation and to develop a novel process for simultaneously removal of SOx and NOx from power plants that would operate on low sulfur coal without the need for wet-FGD & SCRs. A novel purification process operating at high pressures and ambient temperatures was developed. Activated carbonâ??s catalytic and adsorbent capabilities are used to oxidize the sulfur and nitrous oxides to SO{sub 3} and NO{sub 2} species, which are adsorbed on the activated carbon and removed from the gas phase. Activated carbon is regenerated by water wash followed by drying. The development effort commenced with the screening of commercially available activated carbon materials for their capability to remove SO{sub 2}. A bench-unit operating in batch mode was constructed to conduct an experimental investigation of simultaneous SOx and NOx removal from a simulated oxyfuel flue gas mixture. Optimal operating conditions and the capacity of the activated carbon to remove the contaminants were identified. The process was able to achieve simultaneous SOx and NOx removal in a single step. The removal efficiencies were >99.9% for SOx and >98% for NOx. In the longevity tests performed on a batch unit, the retention capacity could be maintained at high level over 20 cycles. This process was able to effectively remove up to 4000 ppm SOx from the simulated feeds corresponding to oxyfuel flue gas from high sulfur coal plants. A dual bed continuous unit with five times the capacity of the batch unit was constructed to test continuous operation and longevity. Full-automation was implemented to enable continuous operation (24/7) with minimum operator supervision. Continuous run was carried out for 40 days. Very high SOx (>99.9%) and NOx (98%) removal efficiencies were also achieved in a continuous unit. However, the retention capacity of carbon beds for SOx and NOx was decreased from ~20 hours to ~10 hours over a 40 day period of operation, which was in contrast to the results obtained in a batch unit. These contradictory results indicate the need for optimization of adsorption-regeneration cycle to maintain long term activity of activated carbon material at a higher level and thus minimize the capital cost of the system. In summary, the activated carbon process exceeded performance targets for SOx and NOx removal efficiencies and it was found to be suitable for power plants burning both low and high sulfur coals. More efforts are needed to optimize the system performance.

Monica Zanfir; Rahul Solunke; Minish Shah

2012-06-01T23:59:59.000Z

271

Volumen 1 N. 2 Julio Diciembre 2011  

E-Print Network [OSTI]

___________________________________________________________________________________________________ ________________________________________________________________________________________ e-colabora "Revista de ciencia, educación, innovación y cultura apoyadas por Redes de Tecnología ___________________________________________________________________________________________________ ________________________________________________________________________________________ e-colabora "Revista de ciencia, educación, innovación y cultura apoyadas por Redes de Tecnología

272

6, 42734324, 2006 Stratospheric N2O  

E-Print Network [OSTI]

Discussion EGU Abstract A comprehensive set of stratospheric balloon and aircraft samples was analyzed

Paris-Sud XI, Université de

273

JOURNAL DE PHYSIQUE CoZZoque C9, suppl6ment au nO1l, Tome 41, novembre 2980, page C9-203 THE HIGH GAIN C02 LASER BY EFFECTIVE MIXING OF N2 AND C02 GAS  

E-Print Network [OSTI]

GAIN C02 LASER BY EFFECTIVE MIXING OF N2 AND C02 GAS H. Hara and A. Fujisawa. First Research Center is described in which vibrationally excited N2 gas and cold Con gas are mixed effectively by means of the diffusion of C02 gas into Ng gas. By using different ty- pes of mixing techniques, a maximum gain of 1 1 m

Boyer, Edmond

274

On modeling the potential impacts of CO2 sequestration on shallow groundwater: Transport of organics and co-injected H2S by supercritical CO2 to shallow aquifers  

E-Print Network [OSTI]

solvent, and its use to decontaminate soils impacted by hazardous organic compounds is regarded as a “green”

Zheng, L.

2014-01-01T23:59:59.000Z

275

Dicarboxylate assisted synthesis of the monoclinic heterometallic tetrathiocyanato bridged copper(II) and mercury(II) coordination polymer {l_brace}Cu[Hg(SCN){sub 4}]{r_brace}{sub n}: Synthesis, structural, vibration, luminescence, EPR studies and DFT calculations  

SciTech Connect (OSTI)

The synthesis of the monoclinic polymorph of {l_brace}Cu[Hg(SCN){sub 4}]{r_brace}{sub n} is reported. The compound, as determined by X-ray diffraction of a twinned crystal, consists of mercury and copper atoms linked by {mu}{sub 1,3}-SCN bridges. The crystal packing shows a highly porous infinite 3D structure. Diagnostic resonances for the SCN{sup -} ligand and metal-ligand bonds in the IR, far-IR and Raman spectra are assigned and discussed. The electronic band structure along with density of states (DOS) calculated by the DFT method indicates that the compound is an indirect band gap semiconductor. The DFT calculations show that the observed luminescence of the compound arises mainly from an excited LLCT state with small MLCT contributions (from the copper to unoccupied {pi}{sup *} orbital of the thiocyanate groups). The X-band EPR spectrum of the powdered sample at room temperature reveals an axial signal with anisotropic g factors consistent with the unpaired electron of Cu(II) ion in the d{sub x}{sup 2}{sub -y}{sup 2} orbital. -- Graphical abstract: Synthesis and X-ray structure determination of the monoclinic {l_brace}Cu[Hg(SCN){sub 4}]{r_brace}{sub n} is reported. The IR, far-IR, Raman, photoluminescence as well as EPR spectra of the compound is discussed. Also, the emission and semiconducting behavior of the compound is illustrated through the density functional theory calculation of electronic band structure along with density of states. Display Omitted Research highlights: > The monoclinic {l_brace}Cu[Hg(SCN){sub 4}]{r_brace}{sub n} has been prepared. > The structure of the compound is determined by XRD of a twinned crystal. > The IR, far-IR, Raman, EPR and emission spectra of the compound is investigated. > As shown by DFT calculations, the emission bands of the compound are mainly LLCT. > Small MLCT from the copper to the thiocyanate groups contributes to these bands.

Khandar, Ali Akbar, E-mail: akhandar@yahoo.co [Department of Inorganic Chemistry, Faculty of Chemistry, University of Tabriz, 5166614766 Tabriz (Iran, Islamic Republic of); Klein, Axel [Institut fuer Anorganische Chemie, Universitaet zu Koeln, Greinstrasse 6, 50939 Koeln (Germany); Bakhtiari, Akbar [Department of Inorganic Chemistry, Faculty of Chemistry, University of Tabriz, 5166614766 Tabriz (Iran, Islamic Republic of); Institut fuer Anorganische Chemie, Universitaet zu Koeln, Greinstrasse 6, 50939 Koeln (Germany); Mahjoub, Ali Reza [Department of Chemistry, School of Science, Tarbiat Modares University, P.O. Box 14155-4838 Tehran (Iran, Islamic Republic of); Pohl, Roland W.H. [Institut fuer Anorganische Chemie, Universitaet zu Koeln, Greinstrasse 6, 50939 Koeln (Germany)

2011-02-15T23:59:59.000Z

276

Measurements of the reduced force coefficients for H2, N2, CO, and CO2 incident upon a solar panel array material, SiO2-coated Kapton, Kapton, and Z-93-coated Al  

Science Journals Connector (OSTI)

The reduced force coefficients were measured for H2, N2, CO, and CO2 incident upon a solar panel array material, SiO2-coated Kapton, Kapton, and Z-93-coated Al. The coefficients were determined by measuring both the magnitude and direction of the force exerted on the surfaces by molecular beams of the gases. Measurements were made at angles of incidence of 0°, 25°, 50°, 75°, and 85°. The forces were measured using a torsion balance with the surfaces mounted on the end of the lever arm. The absolute flux densities of the molecular beams were measured using a second torsion balance with a beam stop mounted on the lever arm that nullified the force of the scattered molecules. Flux measurements were also made using the effusive method. Standard time-of-flight techniques were used to determine the flux-weighted average velocities of the molecular beams. These velocities ranged from 1670 to 4620 m/s. The overall uncertainty in the reduced force coefficient measurements was estimated to be less than ±10%. These measurements were used to obtain the magnitude and direction of the flux-weighted average velocity of the scattered molecules, and also the flux-weighted translational kinetic energy of the scattered molecules. Analysis of this information provided insight into the microscopic details of the gas-surface interaction potential energy surface.

Steven R. Cook; Mark A. Hoffbauer; David D. Clark; Jon B. Cross

1998-07-01T23:59:59.000Z

277

Direct ab initio molecular dynamics study on a microsolvated S{sub N}2 reaction of OH{sup -}(H{sub 2}O) with CH{sub 3}Cl  

SciTech Connect (OSTI)

Reaction dynamics for a microsolvated S{sub N}2 reaction OH{sup -}(H{sub 2}O)+CH{sub 3}Cl have been investigated by means of the direct ab initio molecular dynamics method. The relative center-of-mass collision energies were chosen as 10, 15, and 25 kcal/mol. Three reaction channels were found as products. These are (1) a channel leading to complete dissociation (the products are CH{sub 3}OH+Cl{sup -}+H{sub 2}O: denoted by channel I), (2) a solvation channel (the products are Cl{sup -}(H{sub 2}O)+CH{sub 3}OH: channel II), and (3) a complex formation channel (the products are CH{sub 3}OH{center_dot}{center_dot}{center_dot}H{sub 2}O+Cl{sup -}: channel III). The branching ratios for the three channels were drastically changed as a function of center-of-mass collision energy. The ratio of complete dissociation channel (channel I) increased with increasing collision energy, whereas that of channel III decreased. The solvation channel (channel II) was minor at all collision energies. The selectivity of the reaction channels and the mechanism are discussed on the basis of the theoretical results.

Tachikawa, Hiroto [Division of Materials Chemistry, Graduate School of Engineering, Hokkaido University, Sapporo 060-8628 (Japan)

2006-10-07T23:59:59.000Z

278

Effect of annealing on the kinetic properties and band parameters of Hg{sub 1?x?y}Cd{sub x}Eu{sub y}Se semiconductor crystals  

SciTech Connect (OSTI)

The results of studies of the kinetic properties of Hg{sub 1?x?y}Cd{sub x}Eu{sub y}Se semiconductor crystals in the ranges of temperatures T = 77–300 K and magnetic fields H = 0.5–5 kOe before and after heat treatment of the samples in Se vapors are reported. It is established that annealing of the samples in Se vapors induces a decrease in the electron concentration. From the concentration dependence of the electron effective mass at the Fermi level, the band gap, the matrix element of interband interaction, and the electron effective mass at the bottom of the conduction band are determined.

Kovalyuk, T. T., E-mail: tarik-1006@mail.ru; Maistruk, E. V.; Maryanchuk, P. D. [Chernivtsy National University (Ukraine)

2014-12-15T23:59:59.000Z

279

Two-fermion-four-boson description of {sup 198}Hg within the U{sub {nu}}(6/12) x U{sub {pi}}(6/4) extended nuclear structure supersymmetry  

SciTech Connect (OSTI)

Using the U{sub {nu}}(6/12) x U{sub {pi}}(6/4) extended supersymmetry, we constructed the energy spectrum and electromagnetic transition properties of the supermultiplet member {sup 198}Hg with two proton fermions coupled to a neutron boson core. Consistency between the supersymmetric interacting boson fermion fermion approximation (IBFFA) description and the F-spin symmetric interacting boson approximation (IBA-2) description is shown for this two-fermion-N-boson multiplet member. The data of a {gamma}{gamma} angular correlation experiment using the HORUS cube {gamma}-ray spectrometer--determining new multipole mixing ratios, level spins, {gamma} transitions, and energy states--shows quite a good agreement, also for the low-energy part of the spectrum, when comparing theoretical predictions and experimental data. This is contrary to the usual assumption that a two-fermion-N-boson constellation should describe just the excited two-quasiparticle states.

Bernards, C.; Heinze, S.; Jolie, J.; Fransen, C.; Linnemann, A.; Radeck, D. [Institut fuer Kernphysik, Universitaet zu Koeln, Zuelpicher Strasse 77, D-50937 Koeln (Germany)

2009-05-15T23:59:59.000Z

280

Simulation of relaxation times and energy spectra of the CdTe/Hg{sub 1-x}Cd{sub x}Te/CdTe quantum well for variable valence band offset, well width, and composition x  

SciTech Connect (OSTI)

The dependences of relaxation times and energy spectrum of the CdTe/Hg{sub 1-x}Cd{sub x}Te/CdTe quantum well (QW) on its parameters were simulated in the cadmium molar fraction range 0 < x < 0.16. It was found that the x increase from 0 to 0.16 changes electron wave function localization in the QW. A criterion for determining the number of interface levels of localized electrons depending on QW parameters was obtained. The effect of a sharp (by two orders of magnitude) increase in the relaxation time of localized electrons was detected at small QW widths and x close to 0.16.

Melezhik, E. O., E-mail: emelezhik@gmail.com; Gumenjuk-Sichevska, J. V.; Sizov, F. F. [National Academy of Sciences, Lashkariev Institute of Semiconductor Physics (Ukraine)

2010-10-15T23:59:59.000Z

Note: This page contains sample records for the topic "n2 h2s hg" 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

Electron Impact Induced Fragmentation of N2H+ and N2D+  

Science Journals Connector (OSTI)

Specific data on such molecular ions has been thus recognized as an urgent need for fusion plasma research purposes. ...

M. O. A. El Ghazaly; J. B. A. Mitchell; J. J. Jureta; P. Defrance

2014-10-21T23:59:59.000Z

282

Specific features of the temperature dependence of the conduction electron concentration in the narrow-gap and zero-gap states of Cd{sub x}Hg{sub 1-x}Te  

SciTech Connect (OSTI)

Results of studies of the conductivity {sigma} and the Hall coefficient R in the Cd{sub x}Hg{sub 1-x}Te crystals with x = 0.1, 0.12, 0.14, and 0.15 are analyzed in the temperature range T = 4.2-300 K and the magnetic field range B = 0.005-2.22 T. Using data on the R(B) in low and high magnetic fields and the data on {sigma}(T), electron and hole concentrations and mobilities are determined. It is shown that the electron concentration n in the studied samples is almost independent of T in the range 4.2-15 K, while as T increases, it increases according to the law n {proportional_to} T {sup r} (r > 3/2), where r = f(n, T, x). It is found that r varies from 1.7 at x = 0.1 to 3.1 at compositions with x = 0.14 and 0.15. The results for n(T) are compared with theory, taking into account nonparabolicity of the variance law for {epsilon}(T), and with the theory of impurity states in narrow-gap and zero-gap semiconductors. It is shown that the constancy of n(T) up to {approx}15 K and the strong dependence n(T) (r > 3/2) at higher temperatures are caused by the intense ionization of electrons localized at acceptor states.

Aliev, S. A.; Zulfigarov, E. I.; Selim-zade, R. I. [Academy of Sciences of Azerbaijan, Institute of Physics (Azerbaijan)

2012-03-15T23:59:59.000Z

283

Solubility of Nitrogen in Water in 250c from 25 to 1000 Atmospheres  

Science Journals Connector (OSTI)

Predicting the Phase Equilibria, Critical Phenomena, and Mixing Enthalpies of Binary Aqueous Systems Containing Alkanes, Cycloalkanes, Aromatics, Alkenes, and Gases (N2, CO2, H2S, H2) with the PPR78 Equation of State ... Gas Solubility Measurement and Modeling for the Nitrogen + Water System from 274.18 K to 363.02 K ...

R. Wiebe; V. L. Gaddy; Conrad Heinss Jr.

1932-01-01T23:59:59.000Z

284

Eco-Efficiency Analysis of Biomethane Production  

Science Journals Connector (OSTI)

Eco-Efficiency Analysis of Biomethane Production ... L min–1; CH4, 67,51 mol %; CO2, 29,87 mol %; N2, 1.98 mol %; O2, 0.65 mol %; H2S, 5.99 mgS m–3), operated by EWE GmbH, to a biomethane plant. ...

Piotr Biernacki; Sven Steinigeweg; Wilfried Paul; Axel Brehm

2014-11-25T23:59:59.000Z

285

Ultraviolet Light Initiated Oxidation of Elemental Hg  

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

The PCO Process for Removal of Mercury from Flue Gas The PCO Process for Removal of Mercury from Flue Gas Christopher R. McLarnon, Ph.D. Powerspan Corp., P.O. Box 219, 54 Old Bay Road, New Durham, NH 03855 Evan J. Granite* and Henry W. Pennline National Energy Technology Laboratory, United States Department of Energy, P.O. Box 10940, MS 58-106, Pittsburgh, PA 15236-0940 *Corresponding author. Tel.: +1412-386-4607; fax: +1412-386-6004 E-mail address: evan.granite@netl.doe.gov Abstract A promising technology has been developed to capture and remove elemental mercury species from coal-fired power plants. Powerspan Corp. has licensed the technology and initiated a bench and pilot test program to develop the Photochemical Oxidation, or PCO(tm), process for

286

MERIT Hg System Final Design Review  

E-Print Network [OSTI]

Alignment · Baseplate has jackscrews to precisely adjust cart axial position · Flex metal hoses may allow system and magnet · Increase separation distance - Design concept initiated · Use non-magnetic hydraulic

McDonald, Kirk

287

Hg System Status V.B. Graves  

E-Print Network [OSTI]

2006 OAK RIDGE NATIONAL LABORATORY U. S. DEPARTMENT OF ENERGY Syringe Pump at ORNL · Hydraulic power separately due to weld inspection problems, delivered Aug 1 · Cylinders set directly on target cart until OF ENERGY HPU Setup · Hydraulic fluid fill and drain process developed using peristaltic pump - Pump works

McDonald, Kirk

288

Hg System Assembly and Testing Status  

E-Print Network [OSTI]

OF ENERGY Current Status / Next Steps · Populate secondary box ports · Complete plumbing inside secondary #12;2VRVS Meeting 1 Nov 2006 OAK RIDGE NATIONAL LABORATORY U. S. DEPARTMENT OF ENERGY Welding OAK RIDGE NATIONAL LABORATORY U. S. DEPARTMENT OF ENERGY Cart Modifications · Secondary box center

McDonald, Kirk

289

Sources and distribution of Campylobacter fetus subsp. jejuni in turkeys  

E-Print Network [OSTI]

. Characteristics Cam lobacter s ecies C. ~e uni C. coli C. fetus subsp. fetus C. fetus subsp. venerealis Oxidase Ferment sugars N03 reduction N02 reduction H2S (SIN) H2S (strip)a Hippurate hydrolysis Growth with: 1% glycine 3. 5X NaCl Growth at: 25 C 30.... These plates were incubated at 42 C for 48 h in an atmosphere of 5% 02, 1+ 002, and 85K N2. Suspect colonies (smooth, convex, translucent, colorless to cream-colored, pin-point to 1-1. 2 mm in diameter or often spreading colonies) of C. fetus subsp. jejuni...

Acuff, Gary Royce

1982-01-01T23:59:59.000Z

290

TransForum v9n2 - PHEV Research  

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

PHEVs Need Further Research for Acceptable Payback PHEVs Need Further Research for Acceptable Payback Fuel Consumption as a Function of Distance PHEV graph In order to double the fuel displacement obtained with a 4kWh battery, the battery size had to be quadrupled to 16kWh. Aymeric Rousseau and his team at Argonne studied the impact of real-world drive cycles on the fuel efficiency and costs of different plug-in hybrid electric vehicle (PHEV) configurations. They found that while different PHEV configurations all demonstrated great potential for replacing gasoline (with less gasoline consumed as more electricity was used), the benefit of adding a larger battery seemed to decrease with increasing battery pack size. "In general, the larger the battery, the more fuel saved," said Rousseau, principal investigator of the vehicle modeling and simulation

291

SSQ V1 N2_6june11_FINAL  

National Nuclear Security Administration (NNSA)

2 2011 2 2011 Comments Questions or comments regarding the Stockpile Stewardship Quarterly should be directed to Terri.Batuyong@nnsa.doe.gov Technical Editor: Douglas Drake, Publication Editor: Millicent Mischo Inside This Issue Stockpile Stewardship Quarterly Defense Programs Stockpile Stewardship in Action Volume 1, Number 2 What do physicists and paparazzi have in common? They know that a picture is worth a thousand words! For this issue of the Stockpile Stewardship Quarterly, the theme is advances in imaging diagnostics. Not only do the images tell a story, as asserted in the old axiom, about the dynamics of high-explosives, laser or pulsed power-driven events, but they are also becoming very quantitative. The

292

LiOH - N2H6Cl2  

Science Journals Connector (OSTI)

This document is part of Subvolume B ‘Densities of Binary Aqueous Systems and Heat Capacities of Liquid Systems’ of Volume 1 ‘Densities of Liquid Systems’ of Landolt-Börnstein - Group IV Physical Chemistry.

J. D’Ans; H. Surawski; C. Synowietz

1977-01-01T23:59:59.000Z

293

R5 TechComm N2 Keynotes 2011  

E-Print Network [OSTI]

Immunogold Electron Microscopy TC5-LM3 TC5-LM4 Fluorescent checking TC5-LM1 TC5-LM2 Confocal microscopy TC5-LM3 TC5-LM4 Fluorescence microscopy Auto- fluorescence Fluorescent staining Other samples TC5-LM5 Monoclonal antibody * TC4-E10 ELISA system TC4-E11 Epitope prediction TC5 TC5-EM1 SEM or TEM TC5-LM2

Wu, Yih-Min

294

Aspects of Four Dimensional N = 2 Field Theory  

E-Print Network [OSTI]

using six dimensional method. This requires introducing irregular singularity of Hithcin’s equation. Compactify four dimensional theory down to three dimensions, the corresponding N = 4 theory has the interesting mirror symmetry. The mirror theory...

Xie, Dan

2011-07-11T23:59:59.000Z

295

Observation of a stripping threshold for the reaction N2 ^++CH4?N2H^++CH3  

E-Print Network [OSTI]

reactions of positive ions have been found to proceed with no activa­ tion energT; (2) the most probable value of the product translational energy is about 0.1 eV lower than the value predicted by the spectator stripping model, 3 exactly the opposite... that the methyl fragment be produced with in­ ternal excitation. B. Reaction cross section a R The reaction cross section is calculated from the equation where Ie is the total reactively scattered product ion intensity, IA is the transmitted primary ion...

Wyatt, J. R.; Strattan, L. W.; Snyder, S. C.; Hierl, Peter M.

1976-01-01T23:59:59.000Z

296

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

E-Print Network [OSTI]

with similar kT e and N e values or using similar etching chemistries. 5 1.3. Plasma Chemistry?Reactive, Inert, and Inhibiting Species Previous work in the University of Kansas Plasma Research Laboratory (KU PRL or KU Plasma Research Lab) has focused...

Pathak, Bogdan Amaru

2008-08-01T23:59:59.000Z

297

Manure to Energy: Understanding Processes, Principles and Jargon  

E-Print Network [OSTI]

of air (especially oxygen) to produce biogas. Biogas, which is produced from degradation of organic matter in manure by the bacteria, contains primarily methane (CH 4 ) and carbon dioxide (CO 2 ). Other gases, such as nitrogen (N 2 ), hydrogen... sulfide (H 2 S) and trace organic components are also present in relatively small quantities. Typically, 60-65 percent #24; of the biogas is CH 4 . Methane and CO 2 represent more than 90 percent of the biogas. Virtually all N, phosphorus (P...

Mukhtar, Saqib

2006-11-30T23:59:59.000Z

298

Solubility of water in compressed nitrogen, argon, and methane  

Science Journals Connector (OSTI)

Solubility of water in compressed nitrogen, argon, and methane ... The accurate determination of water content in hydrocarbons is critical for the petroleum and natural gas industries due to corrosion and ... ... Predicting the Phase Equilibria, Critical Phenomena, and Mixing Enthalpies of Binary Aqueous Systems Containing Alkanes, Cycloalkanes, Aromatics, Alkenes, and Gases (N2, CO2, H2S, H2) with the PPR78 Equation of State ...

Maurice Rigby; John M. Prausnitz

1968-01-01T23:59:59.000Z

299

Experimental Investigation on High-pressure, High-temperature Viscosity of Gas Mixtures  

E-Print Network [OSTI]

area A a layer in fluid flow between two plates bar pressure unit, 1 bar = 0.987 atms cm centimeter cp centipoise CO2 carbon dioxide oC Celsius temperature db ball diameter dt tube diameter D tube diameter ft foot or feet F... Subscripts Symbol Description 1atm 1 atmosphere Avg average CO2 carbon dioxide g gas H2S hydrogen sulfide i initial N2 nitrogen xiii TABLE OF CONTENTS Page ABSTRACT...

Davani, Ehsan

2012-02-14T23:59:59.000Z

300

MERIT Hg System Status V.B. Graves  

E-Print Network [OSTI]

modules inserted into magnet utilizes Ti or Ti alloys - Alleviates issues with welding dissimilar metals Mar 2006 Beam Windows · Windows fabricated from Ti6Al4V alloy · Welded attachments provide more usable

McDonald, Kirk

Note: This page contains sample records for the topic "n2 h2s hg" 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

Nitrogen Oxides, Sulphur Trioxide and Mercury Emissions during Oxy-Fuel Fluidized Bed Combustion of Victorian Brown Coal  

Science Journals Connector (OSTI)

This study investigates, for the first time, the NOX, N2O, SO3 and Hg emissions from combustion of a Victorian brown coal in a 10 kWth fluidized bed unit under oxy-fuel combustion conditions. Compared to air combustion, lower NOX emissions and higher N2O ...

Bithi Roy; Luguang Chen; Sankar Bhattacharya

2014-11-17T23:59:59.000Z

302

Insights into the Effect of Soil pH on N2O and N2 Emissions and Denitrifier Community Size and Activity  

Science Journals Connector (OSTI)

...33), typically by the application of lime. This method of pH manipulation can take years, with repeated lime applications being required. In the present...Madani, and W. Hart. 2006. Effect of lime, dicyandiamide and soil water content...

Ji?í ?uhel; Miloslav Šimek; Ronnie J. Laughlin; David Bru; Dominique Chèneby; Catherine J. Watson; Laurent Philippot

2010-01-29T23:59:59.000Z

303

Fabrication of Fe16N2 Films by Sputtering Process and Experimental Investigation of Origin of Giant Saturation Magnetization in Fe16N2  

SciTech Connect (OSTI)

We present a systematic study to address a longstanding mystery in magnetic materials and magnetism, whether there is giant saturation magnetization in Fe{sub 16}N{sub 2} and why. Experimental results based on sputtered thin film samples are presented. The magnetism of Fe{sub 16}N{sub 2} is discussed systematically from the aspects of material processing, magnetic characterization and theoretical investigation. It is observed that thin films with Fe{sub 16}N{sub 2}+Fe{sub 8}N mixture phases and high degree of N ordering, exhibit a saturation magnetization up to 2.68T at room temperature, which substantially exceeds the ferromagnetism limit based on the traditional band magnetism understanding. From X-ray magnetic circular Dichorism (XMCD) experiment, transport measurement and first-principle calculation based on LDA+U method, it is both experimentally and theoretically justified that the origin of giant saturation magnetization is correlated with the formation of highly localized 3d electron states in this Fe-N system. A large magnetocrystalline anisotropy for such a material is also discussed. Our proposed 'cluster+atom' theory provides promising directions on designing novel magnetic materials with unique performances.

Wang J. P.; Sanchez-Hanke C.; Ji, N; Liu, X.; Xu, Y.: Sanchez-Hanke, C.; Wu, Y.; de Groot, F.M.F.; Allard, L.F.; Lara-Curzio, E.

2012-05-05T23:59:59.000Z

304

Effects of Humidity and [NO3]/[N2O5] Ratio on the Heterogeneous Reaction of Fluoranthene and Pyrene with N2O5/NO3/NO2  

Science Journals Connector (OSTI)

air pollution episode in Claremont, California, in Sept., 1985, and in high-NOx episodes in Torrance, California, in Jan. and Feb., 1986, contributed 1.1-8.4% of the total mutagenicity of the particles. ... matter were detd. in samples collected in polluted ambient air in southern California. ...

Peng Zhang; Wanqi Sun; Nana Li; Youfeng Wang; Jinian Shu; Bo Yang; Liang Dong

2014-10-20T23:59:59.000Z

305

NETL: Gasification  

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

Conditioning: Sulfur Recovery and Tail Gas Treating Conditioning: Sulfur Recovery and Tail Gas Treating Sulfuric Acid The option to recover sulfur in the form of sulfuric acid is practiced at Tampa Electric's IGCC demonstration plant, given the local demand for sulfuric acid for fertilizer manufacture in this area of Florida. Figure 1 shows a simplified flow of the Tampa Electric IGCC sulfuric acid plant. The sulfuric acid plant receives the H2S from the AGR unit and H2S and ammonia from the water stripper. The gas streams are then burned in a decomposition furnace, where the H2S produces primarily SO2 with trace amounts of SO3, sulfuric acid and elemental sulfur and the ammonia is converted to N2 and water. The decomposition furnace exit gas is cooled from about 1,950°F to 650°F in a waste heat boiler to produce medium pressure steam for in plant use. The gas is then further cooled and dried. This step produces a 'weak acid' waste stream which needs to be neutralized before discharging into the cooling pond. The SO2 and oxygen (from either air or an air separation plant) then react over a vanadium based catalyst bed in a converter according to the reaction;

306

The solubility of gold in water-hydrogen sulphide vapours: An experimental study  

E-Print Network [OSTI]

O-H2S gas mixtures. The solubility of gold was measured in pure H2S gas and H2O-H2S gas mixtures. The following reactions are interpreted to control the solubility of gold in H2O-H2S gas mixtures: )()()()()1 by the reaction H2+S=H2S, the solubility of gold in reduced sulphur-bearing vapour is relatively high (up to 1 ppb

Barnes, Sarah-Jane

307

Enthalpy and Heat Capacity Changes on Mixing: Fundamental Aspects and Prediction by Means of the PPR78 Cubic Equation of State  

Science Journals Connector (OSTI)

Enthalpy and Heat Capacity Changes on Mixing: Fundamental Aspects and Prediction by Means of the PPR78 Cubic Equation of State ... As previously illustrated by Jaubert et al.,(5) the kij coefficient may have such an important influence on the quantification of the attractive forces by the EoS that the phase behavior of a binary system may be completely upset by small kij variations. ... (21, 22) The handbook by Poling et al.(21) was used for alkanes, aromatics, naphthenes, alkenes, mercaptans, CO2, N2, H2S, and H2. ...

Jun-Wei Qian; Romain Privat; Jean-Noël Jaubert; Pierre Duchet-Suchaux

2013-09-17T23:59:59.000Z

308

Thermodynamic Investigation of Carbon Deposition and Sulfur Evolution in Chemical Looping Combustion with Syngas  

Science Journals Connector (OSTI)

Thermodynamic Investigation of Carbon Deposition and Sulfur Evolution in Chemical Looping Combustion with Syngas ... Chemical looping combustion (CLC) with syngas, a synthesized gas mixture of CO, H2, CO2, H2O(g), N2, and H2S, was investigated using thermodynamic simulation, with focus on carbon deposition and sulfur evolution in CLC. ... Abad, A.; Garcia-Labiano, F.; de Diego, L. F.; Gayan, P.; Adanez, J. Reduction kinetics of Cu-,Ni-, and Fe-based oxygen carriers using syngas (CO+H2) for chemical-looping combustion Energy Fuels 2007 21 4 1854 1858 ...

Baowen Wang; Rong Yan; Dong Ho Lee; David Tee Liang; Ying Zheng; Haibo Zhao; Chuguang Zheng

2008-02-16T23:59:59.000Z

309

TransForum v9n2 - Energy Frontier Research Centers  

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

Energy Frontier Research Centers Promise Advances in Transportation Technologies Energy Frontier Research Centers Promise Advances in Transportation Technologies IACT The solid-electrolyte interface is a critical component in electrochemical energy storage. Because of the high reactivity between the electrolyte and the electrodes at the SEI interface, Li-ion batteries show limited calendar and cycle life--less than two years, which is much lower than the 15 years required for enabling this technology in vehicles. CEES The platinum particle is interacting with a molecule of propanol. The propanol is a gas phase surrogate for the heavier cellulose materials that are the focus of one of Argonne's Energy Frontier Research Centers, the Institute for Atom-Efficient Chemical Transformations. The U.S. Department of Energy's (DOE's) Office of Science recently

310

Ion Chemistry in Cold Plasmas of H2 with CH4 and N2  

Science Journals Connector (OSTI)

20 Inhibition of a-C:H film formation in the presence of nitrogenous species has been shown to be of interest for development of nuclear fusion reactors. ... The desired reactor pressure and gas mixture composition were selected by balancing the input gas flow for each gas with a needle valve in the gas inlet. ...

I. Tanarro; V. J. Herrero; A. M. Islyaikin; I. Méndez; F. L. Tabarés; D. Tafalla

2007-08-28T23:59:59.000Z

311

Fast Processes in a N2O-Modulated Hollow Cathode Discharge:? Excitation and Diffusion  

Science Journals Connector (OSTI)

Till now, PECVD has been used mainly with RF and MW discharges, but recently, an increasing growth in papers reporting DC or low-frequency plasmas for PECVD is found,2-5 since particle formation can be largely avoided, even with room-temperature substrates.2 On the other hand, with DC plasmas, larger surfaces can be coated in a simpler way, as needed for example in the conditioning of nuclear fusion vessels6 and in the cleaning and hardening1 of large surfaces. ... In that cases, diffusion effects may be critical in determining the homogeneous distribution of the films, depending on the geometry of the discharge and, specially, when the input of the precursor is localized at a single point and high dissociation rates are present. ... and electron densities were used as inputs to a reactor model. ...

T. de los Arcos; M. Castillo; C. Domingo; V. J. Herrero; M. M. Sanz; I. Tanarro

2000-08-08T23:59:59.000Z

312

Unique Thylakoid Membrane Architecture of a Unicellular N2-Fixing Cyanobacterium Revealed by Electron Tomography  

SciTech Connect (OSTI)

Cyanobacteria, descendants of the endosymbiont that gave rise to modern-day chloroplasts, are vital contributors to global biological energy conversion processes. A thorough understanding of the physiology of cyanobacteria requires detailed knowledge of these organisms at the level of cellular architecture and organization. In these prokaryotes, the large membrane protein complexes of the photosynthetic and respiratory electron transport chains function in the intracellular thylakoid membranes. Like plants, the architecture of the thylakoid membranes in cyanobacteria has direct impact on cellular bioenergetics, protein transport, and molecular trafficking. However, whole-cell thylakoid organization in cyanobacteria is not well understood. Here we present, by using electron tomography, an in-depth analysis of the architecture of the thylakoid membranes in a unicellular cyanobacterium, Cyanothece sp. ATCC 51142. Based on the results of three-dimensional tomographic reconstructions of near-entire cells, we determined that the thylakoids in Cyanothece 51142 form a dense and complex network that extends throughout the entire cell. This thylakoid membrane network is formed from the branching and splitting of membranes and encloses a single lumenal space. The entire thylakoid network spirals as a peripheral ring of membranes around the cell, an organization that has not previously been described in a cyanobacterium. Within the thylakoid membrane network are areas of quasi-helical arrangement with similarities to the thylakoid membrane system in chloroplasts. This cyanobacterial thylakoid arrangement is an efficient means of packing a large volume of membranes in the cell while optimizing intracellular transport and trafficking.

Liberton, Michelle L.; Austin, Jotham R.; Berg, R. H.; Pakrasi, Himadri B.

2011-04-01T23:59:59.000Z

313

The Influence of the 4n2Light Trapping Factor on Ultimate Solar Cell Efficiency  

Science Journals Connector (OSTI)

The standard Shockley-Queisser approach to ideal ultimate solar cell efficiency makes a number of idealistic assumptions. Under even slightly non-ideal conditions, the...

Yablonovitch, Eli; Miller, Owen

314

Risk Assessment of H2N2 Influenza Viruses from the Avian Reservoir  

Science Journals Connector (OSTI)

...variations between the in vitro and in vivo models highlight the notion that there is no universal model that can precisely predict influenza virus fitness in humans...should include a variety of available model systems. To summarize the data generated...

Jeremy C. Jones; Tatiana Baranovich; Bindumadhav M. Marathe; Angela F. Danner; Jon P. Seiler; John Franks; Elena A. Govorkova; Scott Krauss; Robert G. Webster

2013-11-13T23:59:59.000Z

315

Temperature Dependence of Scott Thermomagnetic Torque in N2, Ch4, and Hd  

E-Print Network [OSTI]

measurements in MBBA, cf. Ref. 9. 'E. Dubois-Violette, thesis, (Orsay, 1971)(unpublished). C. Williams and P. Cladis, Solid State Commun. ~10 357 (1972); R. Meyer and I. Hailer (private communica- tion). 9Ch, Gahwiller, Phys. Letters 36A, 311 (1971)."0.5x...

Adair, Thomas W.

1972-01-01T23:59:59.000Z

316

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

E-Print Network [OSTI]

electricity is a major source of CO2 in the atmosphere, but the capture and sequestration of CO2 from flue gas two-thirds), CO2, water vapor, oxygen, and minor components such as carbon monoxide, nitrogen oxides

317

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

Broader source: Energy.gov [DOE]

Investigation of a series of transition metal oxides and precious metal based catalysts for ammonia selective oxidation at low temperatures

318

The bioinorganic chemistry of N2S2 metal complexes: reactivity and ligating ability  

E-Print Network [OSTI]

[N,N??-bis-(mercaptoethyl)-1,5-diazacyclooctanato]NiII, Ni-1, is known to undergo metallation reactions with numerous metals. [N,N??-bis-(mercaptoethyl)-1,5-diazacycloheptanato]NiII, (bme-dach)Ni or Ni-1??, differs from Ni-1 by one less carbon...

Golden, Melissa Lynn

2005-08-29T23:59:59.000Z

319

Variations in Atmospheric N2O Concentration During Abrupt Climatic Changes  

Science Journals Connector (OSTI)

...Lawdome (+) (3), Byrd (?), Crete (?), Camp Century (?) (4), D57 (?) (5), Dye 3...are from Lawdome (+) (3), Byrd (), Crete (), Camp Century () (4), D57 () (5), Dye 3-() (6), H15...

J. Flückiger; A. Dällenbach; T. Blunier; B. Stauffer; T. F. Stocker; D. Raynaud; J.-M. Barnola

1999-07-09T23:59:59.000Z

320

A Novel Activation Mechanism of Avian Influenza Virus H9N2 by Furin  

Science Journals Connector (OSTI)

...by fluorescence resonance energy transfer-based peptide assays...directly proportional to the efficiency of HA cleavage, with implications...and the relative cleavage efficiencies were calculated by using the...to determine the knockdown efficiency. Quantitative reverse-transcribed...

Longping V. Tse; Alice M. Hamilton; Tamar Friling; Gary R. Whittaker

2013-11-20T23:59:59.000Z

Note: This page contains sample records for the topic "n2 h2s hg" 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

Transported PDF Modeling of Nonpremixed Turbulent CO/H-2/N-2 Jet Flames  

SciTech Connect (OSTI)

Turbulent CO/H{sub 2}/N{sub 2} (“syngas”) flames are simulated using a transported composition probability density function (PDF) method. A consistent hybrid Lagrangian particle/Eulerian mesh algorithm is used to solve the modeled PDF transport equation. The model includes standard k–? turbulence, gradient transport for scalars, and Euclidean minimum spanning tree (EMST) mixing. Sensitivities of model results to variations in the turbulence model, the treatment of radiation heat transfer, the choice of chemical mechanism, and the PDF mixing model are explored. A baseline model reproduces the measured mean and rms temperature, major species, and minor species profiles reasonably well, and captures the scaling that is observed in the experiments. Both our results and the literature suggest that further improvements can be realized with adjustments in the turbulence model, the radiation heat transfer model, and the chemical mechanism. Although radiation effects are relatively small in these flames, consideration of radiation is important for accurate NO prediction. Chemical mechanisms that have been developed specifically for fuels with high concentrations of CO and H{sub 2} perform better than a methane mechanism that was not designed for this purpose. It is important to account explicitly for turbulence–chemistry interactions, although the details of the mixing model do not make a large difference in the results, within reasonable limits.

Zhao, xinyu; Haworth, D. C.; Huckaby, E. David

2012-01-01T23:59:59.000Z

322

Energy Generation by Extracellular Aldose Oxidation in N2-Fixing Gluconacetobacter diazotrophicus  

Science Journals Connector (OSTI)

...ARTICLE PLANT MICROBIOLOGY Energy Generation by Extracellular...115, 1900 La Plata, Argentina. Phone and fax: 54...increase the efficiency of energy generation. | CINDEFI...Plata-CONICET, 1900 La Plata, Argentina. | Journal Article Research...metabolism Culture Media Energy Metabolism Gluconates...

María F. Luna; Cecilia E. Bernardelli; Carlos F. Mignone; José L. Boiardi

2002-04-01T23:59:59.000Z

323

Understanding denitrification with stable isotope measurements of N2: proof of concept study  

E-Print Network [OSTI]

The biologically mediated removal of nitrogen from estuarine and shallow coastal waters was investigated using a new method for the determination of N? isotope ratios. This method employs the use of a chromatographic separation technique to purify...

Downer, Roswell Curtis

2012-06-07T23:59:59.000Z

324

JOURNAL DE PHYSIQUE Colloque Cl, supplment au n2. Tome 47, fvrier 1986 page cl-181  

E-Print Network [OSTI]

METHOD AND CHARACTERIZATION OF CERAMIC FILMS PREPARED BY ANODIC OXIDATION OF ALUMINUM UNDER SPARKING ëlectrochimiques Abstract - A new synthetic method of ceramic films by anodic oxidation of aluminum was developed of cristalline alumina films on aluminum by the method of anodic oxidation of aluminum for the purpose

Paris-Sud XI, Université de

325

Observing nanoscience and technology worldwide Newsletter n2, February 2009 Stephan Roche www.nanotrendchart.com  

E-Print Network [OSTI]

Observing nanoscience and technology worldwide Newsletter n°2 of the 35 largest districts worldwide. Studying nano-districts gives a new view on nanoscience Data from 200 represented. Interestingly, al- though activity in nanoscience is concentrated in a limited number of areas

Paris-Sud XI, Université de

326

Reversible CO Binding Enables Tunable CO/H2 and CO/N2 Separations...  

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

2,5-dioxido-1,4-benzenedicarboxylate) structure type are demonstrated to bind carbon monoxide reversibly and at high capacity. Infrared spectra indicate that, upon coordination of...

327

Untersuchungen zur N2-Binding bei der Verrottung von Waldgräserwurzeln unter Mikroaeroben Bedingungen  

Science Journals Connector (OSTI)

Es sollte geprüft werden, ob verrottende Wurzeln von Waldgräsern in einem mikroaeroben Milieu den N-Bindern wesentliche Mengen ausnutzbarer C-Quelle zur Verfügung stellen, so daß N-Gewinne mit dem Kjeldahlverf...

H. J. Dubber

1965-10-01T23:59:59.000Z

328

A comparison of three learning methods to predict N2O fluxes and N leaching  

E-Print Network [OSTI]

leaching; the first indicator is a powerful greenhouse gas and the second one is an important source

Boyer, Edmond

329

STATISTICA INFERENZIALE SHEDA N. 2 INTERVALLI DI CONFIDENZA PER IL VALORE ATTESO E LA FREQUENZA  

E-Print Network [OSTI]

dati campionari. In questa scheda costruiremo un intervallo nel quale ci aspettiamo stia il parametro

Rogantin, Maria Piera

330

In situ studies on N2 fixation using the acetylene reduction technique  

Science Journals Connector (OSTI)

...Mendota, Madison, Wisconsin, either offshore or in mid-lake; algal samples also were...the University of Wisconsin experimental farm, Arlington, Wisconsin. Gases.-Acetylene...crease in light intensity, and a change in wind direction on the day of sampling. Figure...

W D Stewart; G P Fitzgerald; R H Burris

1967-01-01T23:59:59.000Z

331

Anthropos, 2012, vol. 107, n2, p. 387-406. Blurring the Lines  

E-Print Network [OSTI]

Babongo Pygmies and their Neighbours (Gabon) Julien Bonhomme, Magali De Ruyter, Guy-Max Moussavou1 "We in Gabon that now bears his name, Paul Du Chaillu visited an encampment of "Obongos", or "dwarfed wild

Boyer, Edmond

332

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

E-Print Network [OSTI]

, Colorado 80808 D. L. Adams Rice University, Bou,ston, Texas 77252 H. Spinka Argonne National Laboratory, Argonne, Illinois 60/89 R. H. Jeppesen University of Montana, Missoula, Montana 69812 G. E. Tripard Washington State University, Pullman... by Argonne National Laboratory under a program administered by the Argonne Division of Educational Programs with funding provided by the U.S. Department of Energy. [1] C.W. Bjork et al. , Phys. Lett. 63B, 31 (1976). [2] C.W. Bjork, Univ. of Texas thesis...

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

1992-01-01T23:59:59.000Z

333

Photodissociation channels for N2O near 130 nm studied by product imaging  

E-Print Network [OSTI]

the experiments of Gilpin and Welge GW 15 and of Stone, Lawrence, and Fairchild SLF .16 In both studies of metastable fragments at an ionizer was recorded. In the SLF study, data for the 130-nm photodissociation

Houston, Paul L.

334

Isospin effects on the 15N(?,2n) reaction cross section  

Science Journals Connector (OSTI)

The cross section for the N15(?,2n) reaction has been studied from 20 to 28 MeV. The cross section remains near zero for 3 MeV above threshold, then rises sharply at about 24 MeV, to a maximum value of 1.7 mb. The shape is explained in terms of the density of T> states in N14 at the relevant excitation energy.

K. G. McNeill; A. D. Bates; R. P. Rassool; E. A. Milne; M. N. Thompson

1988-04-01T23:59:59.000Z

335

Nuclear quantum effects in the structure and lineshapes of the N2 NEXAFS spectrum  

E-Print Network [OSTI]

geometry from an electronic structure calculation -- or fromof the electronic structure calculations. 5 A brief summaryelectronic structure methods than DFT and have involved explicit calculations

Fatehi, Shervin

2010-01-01T23:59:59.000Z

336

Changing He/Ar and N2/Ar ratios of fault air may be earthquake precursors  

Science Journals Connector (OSTI)

... The radon emanation of groundwater may be a useful indication of the precursory effects of earthquakes1. ... of the precursory effects of earthquakes1. Helium may also be of interest, because unlike radon, helium does not decay but accumulates in the lithosphere. Use of only a single ...

RYUICHI SUGISAKI

1978-09-21T23:59:59.000Z

337

Global trends and uncertainties in terrestrial denitrification and N2O emissions  

Science Journals Connector (OSTI)

...University, , PO Box 800.84, 3508 TB, Utrecht, The Netherlands 7 Alterra, Wageningen...denitrification models [34], the model applied in this paper is simple, computing denitrification...Global model with 0.5 0.5 resolution applied in this study, representing denitrification...

2013-01-01T23:59:59.000Z

338

GABINETE DO MINISTRO PROCESSO MEC N 200.711/82; CFE N 2.589/79  

E-Print Network [OSTI]

REGIMENTO GERAL GABINETE DO MINISTRO PROCESSO MEC N° 200.711/82; CFE N° 2.589/79 Nos termos e para

Floeter, Sergio Ricardo

339

The Tiffany Unit N2 - ECBM Pilot: A Reservoir Modeling Study  

SciTech Connect (OSTI)

In October, 2000, the U.S. Department of Energy, through contractor Advanced Resources International, launched a multi-year government-industry R&D collaboration called the Coal-Seq project. The Coal-Seq project is investigating the feasibility of CO{sub 2} sequestration in deep, unmineable coalseams, by performing detailed reservoir studies of two enhanced coalbed methane recovery (ECBM) field projects in the San Juan basin. The two sites are the Allison Unit, operated by Burlington Resources, and into which CO{sub 2} is being injected, and the Tiffany Unit, operating by BP America, into which N{sub 2} is being injected (the interest in understanding the N{sub 2}-ECBM process has important implications for CO{sub 2} sequestration via flue-gas injection). The purposes of the field studies are to understand the reservoir mechanisms of CO{sub 2} and N{sub 2} injection into coalseams, demonstrate the practical effectiveness of the ECBM and sequestration processes, demonstrate an engineering capability to model them, and to evaluate sequestration economics. In support of these efforts, laboratory and theoretical studies are also being performed to understand and model multi-component isotherm behavior, and coal permeability changes due to swelling with CO{sub 2} injection. This report describes the results of an important component of the overall project, the Tiffany Unit reservoir modeling study. The Tiffany Unit is located in the northern portion of the prolific San Juan basin (in Southern Colorado). The study area consists of 34 methane production wells and 12 nitrogen injection wells. The field originally began production in 1983, and N{sub 2} injection operations for ECBM purposes commenced in 1998. Nitrogen injection was suspended in 2002, to evaluate the results of the pilot. In this study, a detailed reservoir characterization of the field was developed, the field history was matched using the COMET3 reservoir simulator, and future field performance was forecast under various operating conditions. Based on the results of the study, the following major conclusions have been drawn: (1) The injection of N{sub 2} at the Tiffany Unit has resulted in incremental methane recovery over estimated primary recovery, in approximate proportion of one volume of methane for every 0.4 volumes of injected nitrogen on a net basis. In the swept areas, an incremental methane recovery of approximately 20% of original-gas-in-place resulted from N{sub 2}-ECBM operations. (2) At the prevailing gas prices at the time the project was implemented ({approx}2.20/Mcf), and not considering any tax credit benefits, the pilot itself was uneconomic. However, with today's gas prices of {approx}$4.00/Mcf, N{sub 2}-ECBM appears economically attractive. (3) Performance predictions of future injection suggests CO{sub 2} sequestration can be accomplished at a slight profit. Economic performance is enhanced by adding some N{sub 2} to the injectant.

Scott Reeves; Anne Oudinot

2004-03-31T23:59:59.000Z

340

Collisional Dynamic Elements of the Pyrazine - N2O System:Middle and Low J States.  

E-Print Network [OSTI]

?? Unimolecular reactions based on the Lindemann - Hinchelwood mechanism are important to understanding combustion and atmospheric processes. The main feature of this mechanism is… (more)

Mix, La Moyne Tyler

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "n2 h2s hg" 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

Glutathione Complex Formation With Mercury(Ii) in Aqueous Solution at Physiological Ph  

SciTech Connect (OSTI)

The mercury(II) complexes formed in neutral aqueous solution with glutathione (GSH, here denoted AH{sub 3} in its triprotonated form) were studied using Hg L{sub III}-edge extended X-ray absorption fine structure (EXAFS) and {sup 199}Hg NMR spectroscopy, complemented with electrospray ionization mass spectrometric (ESI-MS) analyses. The [Hg(AH){sub 2}]{sup 2-} complex, with the Hg-S bond distances at 2.325 {+-} 0.01 {angstrom} in linear S-Hg-S coordination, and the {sup 199}Hg NMR chemical shift at -984 ppm, dominates except at high excess of glutathione. In a series of solutions with C{sub Hg(II)} {approx} 17 mM and GSH/Hg(II) mole ratios rising from 2.4 to 11.8, the gradually increasing mean Hg-S bond distance corresponds to an increasing amount of the [Hg(AH){sub 3}]{sup 4-} complex. ESI-MS peaks appear at -m/z values of 1208 and 1230 corresponding to the [Na{sub 4}Hg(AH){sub 2}(A)]{sup -} and [Na{sub 5}Hg(AH)(A){sub 2}]{sup -} species, respectively. In another series of solutions at pH 7.0 with CHg(II) 50 mM and GSH/Hg(II) ratios from 2.0 to 10.0, the Hg L{sub III}-edge EXAFS and {sup 199}Hg NMR spectra show that at high excess of glutathione (0.35 M) about 70% of the total mercury(II) concentration is present as the [Hg(AH){sub 3}]4- complex, with the average Hg-S bond distance 2.42 {+-} 0.02 {angstrom} in trigonal HgS{sub 3} coordination. The proportions of HgSn species, n = 2, 3, and 4, quantified by fitting linear combinations of model EXAFS oscillations to the experimental EXAFS data in our present and previous studies were used to obtain stability constants for the [Hg(AH){sub 3}]{sup 4-} complex and also for the [Hg(A){sub 4}]{sup 10-} complex that is present at high pH. For Hg(II) in low concentration at physiological conditions (pH 7.4, C{sub GSH} = 2.2 mM), the relative amounts of the HgS{sub 2} species [Hg(AH){sub 2}]{sup 2-}, [Hg(AH)(A)]{sup 3-}, and the HgS{sub 3} complex [Hg(AH){sub 3}]{sup 4-} were calculated to be 95:2:3. Our results are not consistent with the formation of dimeric Hg(II)-GSH complexes proposed in a recent EXAFS study.

Mah, V.; Jalilehvand, F.; /SLAC

2012-08-23T23:59:59.000Z

342

Gas geochemistry of the Valles caldera region, New Mexico and comparisons with gases at Yellowstone, Long Valley and other geothermal systems  

Science Journals Connector (OSTI)

Noncondensible gases from hot springs, fumaroles, and deep wells within the Valles caldera geothermal system (210–300°C) consist of roughly 98.5 mol% CO2, 0.5 mol% H2S, and 1 mol% other components. 3He/4He ratios indicate a deep magmatic source (R/Ra up to 6) whereas ?13C–CO2 values (?3 to ?5‰) do not discriminate between a mantle/magmatic source and a source from subjacent, hydrothermally altered Paleozoic carbonate rocks. Regional gases from sites within a 50-km radius beyond Valles caldera are relatively enriched in CO2 and He, but depleted in H2S compared to Valles gases. Regional gases have R/Ra values ?1.2 due to more interaction with the crust and/or less contribution from the mantle. Carbon sources for regional CO2 are varied. During 1982–1998, repeat analyses of gases from intracaldera sites at Sulphur Springs showed relatively constant CH4, H2, and H2S contents. The only exception was gas from Footbath Spring (1987–1993), which experienced increases in these three components during drilling and testing of scientific wells VC-2a and VC-2b. Present-day Valles gases contain substantially less N2 than fluid inclusion gases trapped in deep, early-stage, post-caldera vein minerals. This suggests that the long-lived Valles hydrothermal system (ca. 1 Myr) has depleted subsurface Paleozoic sedimentary rocks of nitrogen. When compared with gases from many other geothermal systems, Valles caldera gases are relatively enriched in He but depleted in CH4, N2 and Ar. In this respect, Valles gases resemble end-member hydrothermal and magmatic gases discharged at hot spots (Galapagos, Kilauea, and Yellowstone).

Fraser Goff; Cathy J. Janik

2002-01-01T23:59:59.000Z

343

Kinetic study of hydrogen sulfide absorption in aqueous chlorine solution  

E-Print Network [OSTI]

). This technique involves H2S mass transfer in an aqueous phase using a gas-liquid contactor. Since H2S is poorly. This scrubbing liquid is just drained when the salt accumulation due to H2S oxidation into sulfate anions becomes Hydrogen sulfide (H2S) is currently removed from gaseous effluents by chemical scrubbing using water

Paris-Sud XI, Université de

344

Evaluation of Cubic, SAFT, and PC-SAFT Equations of State for the Vapor–Liquid Equilibrium Modeling of CO2 Mixtures with Other Gases  

Science Journals Connector (OSTI)

Evaluation of Cubic, SAFT, and PC-SAFT Equations of State for the Vapor–Liquid Equilibrium Modeling of CO2 Mixtures with Other Gases ... In this work, we assess the capability of Redlich–Kwong (RK), Soave–Redlich–Kwong (SRK), Peng–Robinson (PR) cubic equations of state (EoS), as well as Statistical Associating Fluid Theory (SAFT) and Perturbed-Chain SAFT (PC-SAFT) in modeling vapor–liquid equilibria for binary mixtures of CO2 with CH4, N2, O2, SO2, Ar, and H2S, and for the ternary mixture CO2–N2–O2. ... PC-SAFT is, on average, more accurate than cubic EoS and SAFT when no binary interaction parameter is used. ...

Nikolaos I. Diamantonis; Georgios C. Boulougouris; Erum Mansoor; Dimitrios M. Tsangaris; Ioannis G. Economou

2013-02-07T23:59:59.000Z

345

SSC v s . Hg at 0 -150,000 c fs SSC vs. Hg at 150,000 -370,000 cfs  

E-Print Network [OSTI]

a weir from the Sacramento River into the Yolo Bypass when flows are above 70,000 cubic feet per second through the Yolo Bypass, had not been described yet. To assess pollutant loads from the Delta more accurately, loads from the Sacramento watershed, including the contribu- tion of flow from the Yolo Bypass

346

C:\0MyFiles\jeffrman\HG Files for Web\jeffrman-WEB.vp  

Gasoline and Diesel Fuel Update (EIA)

5 5 ERRATA Analysis of Strategies for Reducing Multiple Emissions from Electric Power Plants with Advanced Technology Scenarios October 2001 Energy Information Administration Office of Integrated Analysis and Forecasting U.S. Department of Energy Washington, DC 20585 This Service Report was prepared by the Energy Information Administration, the independent statistical and analytical agency within the Department of Energy. The information contained herein should be attributed to the Contacts This report was prepared by the staff of the Office of Integrated Analysis and Forecasting of the Energy Infor- mation Administration. General questions concerning the report may be directed to Mary J. Hutzler (202/ 586-2222, mhutzler@eia.doe.gov), Acting Administrator of the Energy Information Administration, Susan H. Holte (202/586-4838, sholte@eia.doe.gov), Director

347

HgCdTe superlattices for solid-state cryogenic refrigeration  

E-Print Network [OSTI]

for solid-state cryogenic refrigeration Daryoosh Vashaee a?merit ?ZT max ? 3? at cryogenic temperatures. Calculationstemperature, 1–6 for cryogenic refrigeration the situation

Vashaee, D; Shakouri, A

2006-01-01T23:59:59.000Z

348

Recovering and recycling Hg from chlor-alkali plant wastewater sludge  

Science Journals Connector (OSTI)

Montana Tech of the University of Montana and Universal Dynamics of British Columbia have developed a hydrometallurgical process for recovering and recycling mercury from chlorine plant wastewater sludge material...

L. G. Twidwell; R. J. Thompson

2001-01-01T23:59:59.000Z

349

Investigation of HgTe-CdTe superlattices grown by molecular beam epitaxy.  

E-Print Network [OSTI]

??[Truncated abstract] Infrared detection finds application in a wide range of fields, including remote sensing, astronomy, medicine and defence. Many of these applications, which require… (more)

Hatch, Stuart D.

2010-01-01T23:59:59.000Z

350

2 Toxicity and Sources of Pb, Cd, Hg, Cr, As, and Radionuclides  

E-Print Network [OSTI]

........................................................................................... 33 2.3 Heavy Metal Pollution Sources ..................................................................................................................... 14 2.1.1 Selected Heavy Metals ...................................................................................................... 27 2.2.1 Heavy Metals in Aquifers

Volesky, Bohumil

351

A Free Jet Hg Target Operating in a High Magnetic Field Intersecting  

E-Print Network [OSTI]

2005 Venice, Italy August 29 ­ Sept 1, 2005 #12;2 OAK RIDGE NATIONAL LABORATORY U. S. DEPARTMENT OF ENERGY AccApp05 Background · Proof-of-principle experiment to investigate the interaction of a proton. DEPARTMENT OF ENERGY AccApp05 Participants · BNL, Princeton ­ project oversight, nozzle development, beam

McDonald, Kirk

352

Elsevier Science 1 A Free Jet Hg Target Operating In a High Magnetic Field  

E-Print Network [OSTI]

, Princeton, NJ 08544, USA d MIT Plasma Science and Fusion Center, Cambridge, MA 02139,USA e CERN, CH-1211, Oak Ridge, TN 37831, USA b Brookhaven National Laboratory, Upton, NY 11973, USA c Princeton University of the Muon Collider Collaboration, with participants from Brookhaven National Laboratory, Princeton

McDonald, Kirk

353

Microsoft Word - Enhanced FGD Hg Capture Economics FINAL May2008.doc  

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

NETL's Mercury Control Technology NETL's Mercury Control Technology Field Testing Program Preliminary Economic Analysis of Wet FGD Co-Benefit Enhancement Technologies Prepared for U.S. Department of Energy Office of Fossil Energy National Energy Technology Laboratory Innovations for Existing Plants Program Prepared by Andrew P. Jones 1 and Thomas J. Feeley, III 2 1 Research and Development Solutions, LLC 2 U.S. Department of Energy, National Energy Technology Laboratory May 2008 2 DISCLAIMER This technical report was prepared by RDS/SAIC with the support of the U.S. Department of Energy. Neither the United States government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or

354

Report on International Collaboration Involving the FE Heater and HG-A Tests at Mont Terri  

E-Print Network [OSTI]

March Report on International Collaboration Involving the FEReport on International Collaboration Involving the FEviii Report on International Collaboration Involving the FE

Houseworth, Jim

2014-01-01T23:59:59.000Z

355

Local Existence and Uniqueness of Positive Solutions of the Equation \\(\\Delta u + \\left( {1 + \\varepsilon \\varphi \\left( r \\right)} \\right){u^{\\tfrac{{n + 2}}{{n - 2}}}} = 0\\) , in ? n and a Related Equation  

Science Journals Connector (OSTI)

We will consider radial solutions of the following problem: where, ? is a continuous radial function and ? is a small real parameter. This equation and its generalizations have been studied in a large numbers ...

Gabrielle Bianchi; Henrik Egnell

1992-01-01T23:59:59.000Z

356

Numerical investigation of the kinetics and chemistry of rf glow discharge plasmas sustained in He, N2, 02, e/N2/02, He/CF4/02, and SiH4/NH3  

E-Print Network [OSTI]

chemistry and etching rates of Si and SiO2 in a CF4 plasma. They found that if the walls are not initially

Kushner, Mark

357

On the feasibility of N2 fixation via a single-site FeI/FeIV cycle: Spectroscopic studies of FeI(N2)FeI, FeIV N, and related species  

Science Journals Connector (OSTI)

...under a dinitrogen atmosphere. Unless otherwise...THF- d 8 , 202 MHz, -50 ° C) d 6...H} NMR (THF, 51 MHz, -50 ° C) d 929...on an Inova 500-MHz spectrometer...modulation frequency of 100 kHz and amplitude 1 mT...accurately determined from plasma emission spectroscopy...

Michael P. Hendrich; William Gunderson; Rachel K. Behan; Michael T. Green; Mark P. Mehn; Theodore A. Betley; Connie C. Lu; Jonas C. Peters

2006-01-01T23:59:59.000Z

358

Novel -Distonic Radical Cations [CnH2n+2S]+ (n ) 2, 3) Formed upon Decarbonylation of Ionized S-Alkyl Thioformates: A Mass Spectrometric and ab Initio Study  

E-Print Network [OSTI]

ions. Strong evidence for the distonic nature of the fragment ions derived from 2-7·+ has been obtained to intense peaks corresponding to H2S·+ and ionized olefins. Portions of the potential energy surface related explored in the gas phase by a variety of mass spectral methods.2,3 In particular, the -distonic isomer

Nguyen, Minh Tho

359

Global metaanalysis of the nonlinear response of soil nitrous oxide (N2O) emissions to fertilizer nitrogen  

Science Journals Connector (OSTI)

...programs, the US Department of Energy Office of Science (Grant DE-FCO2-07ER64494) and Office of Energy Efficiency and Renewable Energy (Grant DE-ACO5-76RL01830...Tsukuba 36°02 N 140°12 E 12 Brazil Capivari, San Paolo 22°93...

Iurii Shcherbak; Neville Millar; G. Philip Robertson

2014-01-01T23:59:59.000Z

360

USE OF NITROGEN BUDGETS AND N2 FLUX MEASUREMENTS TO ESTIMATE THE ROLE OF DENITRIFICATION IN BROWNFIELD STORMWATER WETLANDS  

E-Print Network [OSTI]

to the Environmental Protection Agency's STAR program and Liberty State Park for providing funding for this project to wetlands: - Atmospheric dry and wet deposition concentrations determined using literature values (Liberty) and a 2005­ 2006 field monitoring study (Teaneck) - Stormwater concentrations monitored at Liberty in 2008

Hall, Sharon J.

Note: This page contains sample records for the topic "n2 h2s hg" 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

Global metaanalysis of the nonlinear response of soil nitrous oxide (N2O) emissions to fertilizer nitrogen  

Science Journals Connector (OSTI)

...selected field studies from the literature where in situ measurements of...and in studies identified in reviews by Bouwman (8), Jungkunst...Dataset S1) when available: literature reference; location...fertilizer. Glob Change Biol Bioenergy 16(1):156 ZZQQhy170...

Iurii Shcherbak; Neville Millar; G. Philip Robertson

2014-01-01T23:59:59.000Z

362

Probing the Vibrational Relaxation of N2 and O2 by Use of CARS Spectroscopy to Model NTE-Turbulence  

E-Print Network [OSTI]

NTE-preparation. The detection technique used in the experiment was coherent anti-Stokes Raman spectroscopy (CARS) and variations of this laser-based technique were optimized to maximize accuracy and signal-to-noise in the vibrational relaxation...

Dean, Jacob

2009-06-09T23:59:59.000Z

363

QEPAS based ppb-level detection of CO and N2O using a high power CW DFB-QCL  

E-Print Network [OSTI]

), distributed feedback quantum cascade laser (DFB-QCL) operating at 10°C as the excitation source. For the R(6­1995 (1997). 5. L. Tao, K. Sun, D. J. Miller, M. A. Khan, and M. A. Zondlo, "Optimization for simultaneous, and H. Fischer, "Real-time measurements of atmospheric CO using a continuous-wave room temperature

364

The Photo-Chemistry of Some Minor Constituents of the Earth's Atmosphere (CO2, CO, CH4, N2O)  

Science Journals Connector (OSTI)

......Monthly Notices The Photo-Chemistry of Some Minor Constituents...the various forms of combustion taking place on the Earth...date from oil wells and coal mines appears to be less...Monthly Notices THE PHOTO-CHEMISTRY OF SOME MINOR CONSTITUENTS...date from oil wells and coal mines appears to be less......

D. R. Bates; Agnes E. Witherspoon

1952-05-01T23:59:59.000Z

365

The Photo-Chemistry of Some Minor Constituents of the Earth's Atmosphere (CO2, CO, CH4, N2O)  

Science Journals Connector (OSTI)

......research-article Articles The Photo-Chemistry of Some Minor Constituents of the Earth's...is estimated that the various forms of combustion taking place on the Earth would provide...The yield to date from oil wells and coal mines appears to be less than the amount......

D. R. Bates; Agnes E. Witherspoon

1952-02-01T23:59:59.000Z

366

DFT Study of Direct Methanol Oxidation to Formaldehyde by N2O on the [Fe]2+–ZSM-5 Zeolite Cluster  

Science Journals Connector (OSTI)

(63) Becke’s three-parameter hybrid method(64, 65) involving the Lee, Yang, and Parr correlation functional B3LYP formalism(66) was utilized to take into account the exchange and correlation. ... The numerical calculations reported in this paper were performed at TUBITAK ULAKBIM, High Performance and Grid Computing Center (TR-Grid e-Infrastructure). ...

Mehmet Ferdi Fellah; Isik Onal

2012-06-05T23:59:59.000Z

367

JOURNAL DE PHYSIQUE Colloque C2, supplement au n2, Tome 46, fevrier 1985 page C2-463  

E-Print Network [OSTI]

quasi-free incident protons and neutrons a r e consistent with in- dependence on A0 only a t Aerec > 0 , whereas a t Aerec

Paris-Sud XI, Université de

368

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

E-Print Network [OSTI]

Investigaciones Cienti´ficas, Granada, Spain T. von Clarmann, G. P. Stiller, M. Ho¨pfner, S. Kellmann, G. Mengistu pronounced. Citation: Lo´pez-Puertas, M., B. Funke, S. Gil-Lo´pez, T. von Clarmann, G. P. Stiller, M. Ho

Jackman, Charles H.

369

The role of N2O derived from crop-based biofuels, and from agriculture in general, in Earth's climate  

Science Journals Connector (OSTI)

...biofuels, and from agriculture in general, in Earth's...life cycle analysis (LCA) models, led to broadly...global emissions from agriculture. Independent modelling...life cycle analysis (LCA) models, led to broadly...global emissions from agriculture. Independent modelling...

2012-01-01T23:59:59.000Z

370

Revista Electrnica de Enseanza de las Ciencias Vol. 2 N 2 (2003) Metalibros: La construccin colectiva de un recurso  

E-Print Network [OSTI]

Revista Electrónica de Enseñanza de las Ciencias Vol. 2 Nº 2 (2003) Metalibros: La construcción Internet Juan Miguel Campanario Grupo de Investigación sobre Aprendizaje de las Ciencias. Departamento de enseñanza de las ciencias. Palabras clave: Libros de texto, nuevas tecnologías, renovación educativa

Campanario, Juan Miguel

371

Current biofuel feedstock crops such as corn lead to large environmental losses of N through nitrate leaching and N2  

E-Print Network [OSTI]

219 Current biofuel feedstock crops such as corn lead to large environmental losses of N through biofuel crops established on a rich Mollisol soil. Reduced Nitrogen Losses after Conversion of Row Crop Agriculture to Perennial Biofuel Crops Candice M. Smith, Mark B. david,* Corey A. Mitchell, Michael d. Masters

DeLucia, Evan H.

372

Formation and Genotoxicity of Novel Oxidatively Generated Tandem DNA Lesions and N2-(1-carboxyethyl)-2'-deoxyguanosine  

E-Print Network [OSTI]

Nucleic Acids Res. 33, 1593-1603. von Sonntag, C. (1987) TheNucleic Acids Res. 33, 1593-1603. Liu, Z. J. , Gao, Y. , andNucleic Acids Res. 33, 1593-1603. Wang, Y. (2008) Bulky DNA

Jiang, Yong

2009-01-01T23:59:59.000Z

373

The European land and inland water CO2, CO, CH4 and N2O balance between 2001 and 2005  

SciTech Connect (OSTI)

Globally, terrestrial ecosystems have absorbed about 30% of anthropogenic greenhouse gas emissions over the period 2000-2007 and inter-hemispheric gradients indicate that a significant fraction of terrestrial carbon sequestration must be north of the Equator. We present a compilation of the CO{sub 2}, CO, CH{sub 4} and N{sub 2}O balances of Europe following a dual constraint approach in which (1) a land-based balance derived mainly from ecosystem carbon inventories and (2) a land-based balance derived from flux measurements are compared to (3) the atmospheric data-based balance derived from inversions constrained by measurements of atmospheric GHG (greenhouse gas) concentrations. Good agreement between the GHG balances based on fluxes (1294 {+-} 545 Tg C in CO{sub 2}-eq yr{sup -1}), inventories (1299 {+-} 200 Tg C in CO{sub 2}-eq yr{sup -1}) and inversions (1210 {+-} 405 Tg C in CO{sub 2}-eq yr{sup -1}) increases our confidence that the processes underlying the European GHG budget are well understood and reasonably sampled. However, the uncertainty remains large and largely lacks formal estimates. Given that European net land to atmosphere exchanges are determined by a few dominant fluxes, the uncertainty of these key components needs to be formally estimated before efforts could be made to reduce the overall uncertainty. The net land-to-atmosphere flux is a net source for CO{sub 2}, CO, CH{sub 4} and N{sub 2}O, because the anthropogenic emissions by far exceed the biogenic sink strength. The dual-constraint approach confirmed that the European biogenic sink removes as much as 205 {+-} 72 Tg C yr{sup -1} from fossil fuel burning from the atmosphere. However, This C is being sequestered in both terrestrial and inland aquatic ecosystems. If the C-cost for ecosystem management is taken into account, the net uptake of ecosystems is estimated to decrease by 45% but still indicates substantial C-sequestration. However, when the balance is extended from CO{sub 2} towards the main GHGs, C-uptake by terrestrial and aquatic ecosystems is offset by emissions of non-CO{sub 2} GHGs. As such, the European ecosystems are unlikely to contribute to mitigating the effects of climate change.

Luyassaert, S [CEA-CNRS-UVSQ, LSCE; Abril, G [Laboratoire EPOC, CNRS; Andres, Robert Joseph [ORNL; Bastviken, D [Linkoping University; Bellassen, V [CEA-CNRS-UVSQ, LSCE; Bergamaschi, P [European Commission Joint Research Centre; Bousquet, P [CEA-CNRS-UVSQ, LSCE; Chevallier, F [CEA-CNRS-UVSQ, LSCE; Ciais, P. [LSCE/CEA, Gif-sur-Yvette, France; Corazza, M [European Commission Joint Research Centre; Dechow, R [Johann Heinrich von Thünen Institute; Erb, K-H [Alpen-Adria Universitaet Klagenfurt-Vienna-Graz; Etiope, G [Istituto Nazionale di Geofisica e Vulcanologia; Fortems-Cheiney, A [CEA-CNRS-UVSQ, LSCE; Grassi, G [European Commission Joint Research Centre; Hartmann, J [University of Hamburg; Jung, M. [Max Planck Institute for Biogeochemistry; Lathiere, J [CEA-CNRS-UVSQ, LSCE; Lohila, A [Finnish Meteorological institute; Mayorga, E [University of Washington; Moosdorf, N [University of Hamburg; Njakou, D [University of Antwerp; Otto, J [CEA-CNRS-UVSQ, LSCE; Papale, D. [University of Tuscia; Peters, W [Wageningen University and Research Centre, The Netherlands; Peylin, P [CEA-CNRS-UVSQ, LSCE; Raymond, Peter A [Yale School of Forestry and Environmental Studies; Rodenbeck, C [Max Planck Institute for Biogeochemistry; Saarnio, S [University of Eastern Finland; Schulze, E.-D. [Max Planck Institute for Biogeochemistry; Szopa, S [CEA-CNRS-UVSQ, LSCE; Thompson, R [CEA-CNRS-UVSQ, LSCE; Verkerk, P [European Forest Institute; Vuichard, N [CEA-CNRS-UVSQ, LSCE; Wang, R [Peking University; Wattenbach, M [Helmholtz Centre Potsdam GFZ German Research Centre For Geosciences; Zaehle, S [Max Planck Institute for Biogeochemistry

2012-01-01T23:59:59.000Z

374

New Method of Denitrification Analysis of Bradyrhizobium Field Isolates by Gas Chromatographic Determination of 15N-Labeled N2  

Science Journals Connector (OSTI)

...determined from nitrogen isotope paring...of the carrier gas on the sensitivity...Low-pressure solubility of gases in liquid water. Chem. Rev...Chromatography, Gas methods Culture...Nitrites metabolism Nitrogen Isotopes metabolism...

Reiko Sameshima-Saito; Kaori Chiba; Kiwamu Minamisawa

2004-05-01T23:59:59.000Z

375

A U T U M N 2 0 1 2www.ucd.ie/ucdtoday 5.UCDstudents  

E-Print Network [OSTI]

Olympic-sized swimming pool in the new `Áras na Macléinn' in Belfield. UCD thanks... Contents The general

376

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

E-Print Network [OSTI]

,7 = 3018,0 kJ/mol L Ex mix gases = 6*R*T*ln (½) = -10,1 kJ/mol L losses = 998,0 + 2678,9 ­ 3018,0 + 10. outsideoutside outside outside glass window outside outside outside window inside A R FA R A R Eb R J R J R Eb 11) · (h - T·s) = (O2) ·(cp· T - T·cp·ln(T/T) + R·T·cp·ln(p/p) ) ---------- T effect ----- ---- p effect

Zevenhoven, Ron

377

Close Identity between Alternatively Folded State N2 of Ubiquitin and the Conformation of the Protein Bound to the Ubiquitin-  

E-Print Network [OSTI]

.5 Because the EROS ensemble covers the structural heterogeneity of the protein seen in complex of the Protein Bound to the Ubiquitin- Activating Enzyme Soichiro Kitazawa, Tomoshi Kameda, Ayumi Kumo, Maho Yagi, such as the ubiquitin-proteasomal degradation of damaged proteins.1,2 By solution nuclear magnetic resonance (NMR

Williamson, Mike P.

378

Ab Initio Calculations for Detectable New Isomers of Interstellar Carbon-Chain Radicals Cn(n=2–8)  

Science Journals Connector (OSTI)

......ab initio quantum chemical calculations of the reaction potential energy surface; it was found that this reaction can pro- ceed in interstellar space under a very low-temperature condition (Takahashi, Yamashita 1996). It is expected that C5H can be......

Junko Takahashi

2000-06-01T23:59:59.000Z

379

Boltzmann Equation Analysis and Monte Carlo Simulation of Electron Transport in N2-O2 streamer discharge  

E-Print Network [OSTI]

energy, drift velocity, diffusion coefficients and rate coefficients are reported. 1. Introduction of electrons and ions in regions of high electric field; (2) drift and diffusion in the local electric field trees [6]. In particular, fluid models and/or fluid parts of hybrid models of streamers often require

Ebert, Ute

380

Ammonia synthesis by N2 and steam electrolysis in molten hydroxide suspensions of nanoscale Fe2O3  

Science Journals Connector (OSTI)

...hydroxide suspensions of nanoscale Fe2O3 10.1126/science.1254234...hydroxide suspension of nano-Fe2O3. At 200°C in an electrolyte with...loaded into carbon black as an anode, again at a low rate; note that tin...which consumed water at the anode and air at the cathode at 0...

Stuart Licht; Baochen Cui; Baohui Wang; Fang-Fang Li; Jason Lau; Shuzhi Liu

2014-08-08T23:59:59.000Z

Note: This page contains sample records for the topic "n2 h2s hg" 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

Cyanobacterial Lactate Oxidases Serve as Essential Partners in N2 Fixation and Evolved into Photorespiratory Glycolate Oxidases in Plants  

Science Journals Connector (OSTI)

...analyze the evolutionary history of the GOX enzymes in...Natl. Acad. Sci. USA 87 : 5509-5513. Anderson...1533-1548. Badger, M.R. , Price, G.D., Long, B...In Photosynthesis. Energy from the Sun: 14th International...Natl. Acad. Sci. USA 105 : 17199-17204...

Claudia Hackenberg; Ramona Kern; Jan Hüge; Lucas J. Stal; Yoshinori Tsuji; Joachim Kopka; Yoshihiro Shiraiwa; Hermann Bauwe; Martin Hagemann

2011-08-09T23:59:59.000Z

382

Dietary Lipid-dependent Activation of the Carcinogen N-2-Fluorenylacetamide in Rats as Monitored by Salmonella typhimurium  

Science Journals Connector (OSTI)

...FAAor control vehicle, the mutagen-producingpotential...mixed-function oxidase system in the microsomal...method for the detection of promutagens...of control vehicle or 10 mg FAA...injection of control vehicle or 10 mg FAA...Bacteria for Detection. Proc. NatI...ImprovedBacterialTest System for the Detection...

Carmen E. Castro; Ira C. Felkner; and S. P. Yang

1978-09-01T23:59:59.000Z

383

2,6-Dibenzhydryl-N-(2-phenyliminoacenaphthylenylidene)-4-chloro-aniline nickel dihalides: Synthesis, characterization and ethylene  

E-Print Network [OSTI]

: Synthesis, characterization and ethylene polymerization for polyethylenes with high molecular weights ) for ethylene polymerization. The resulting polyethylenes possess high molecular weights (Mw up to 106 g molÃ?1, it was discovered that a-diimino metal halides of Ni(II) and Pd(II) are highly active pre-catalysts for ethylene

Glaser, Rainer

384

Cyanobacterial Lactate Oxidases Serve as Essential Partners in N2 Fixation and Evolved into Photorespiratory Glycolate Oxidases in Plants  

Science Journals Connector (OSTI)

...2001). After 2 h of incubation under the growth conditions, ethylene was measured in the head space of the vial using gas chromatography...Mol. Biol. Evol. 26 : 1533-1548. Badger, M.R. , Price, G.D., Long, B.M., and Woodger, F.J. (2006...

Claudia Hackenberg; Ramona Kern; Jan Hüge; Lucas J. Stal; Yoshinori Tsuji; Joachim Kopka; Yoshihiro Shiraiwa; Hermann Bauwe; Martin Hagemann

2011-08-09T23:59:59.000Z

385

GAS HYDRATE EQUILIBRIA FOR CO2-N2 AND CO2-CH4 GAS MIXTURES, EXPERIMENTS AND MODELLING  

E-Print Network [OSTI]

to remove those industrial gases that have an impact on the global warming before being emitted CO2 capture in industry is regarded as a possible tool that is suitable for reducing the global steelmaking plants, gas or coal power plants, chemical plants or natural gas production plants. Facing

Paris-Sud XI, Université de

386

JOURNAL DE PHYSIQUE Colloque C2, supplement au n2, Tome 46, fevrier 1985 page C2-289  

E-Print Network [OSTI]

amplitudes has been used C2,43. There a r e two s e t s of nucleon transversity amplitudes Ugi- r e c o i l

Paris-Sud XI, Université de

387

Density-functional study of organicinorganic hybrid single crystal ZnSe,,C2H8N2...12  

E-Print Network [OSTI]

January 2004 Unusual properties i.e., strong band dispersion, high carrier mobility, wide absorption-energy electric energy conversion are predicted to exist in the organic­inorganic chalcogenide single crystal Zn structures and exhibiting high carrier mobilities, as well as for possessing a variety of doping

Li, Jing

388

Spatiotemporal Distribution of NOx Storage: a Factor Controlling NH3 and N2O Selectivities over a Commercial LNT Catalyst  

Broader source: Energy.gov [DOE]

Evaluation of commercial Ba-based LNT (CLEERS benchmark catalyst; containing oxygen storage capacity) in a bench flow reactor under fast-cycling conditions, varying reductant type, temperature and sulfation level

389

Catalytic oxidative coupling of methane over Li/MgO using N2O as an oxidant  

E-Print Network [OSTI]

by Mobil and is known as t, he methanol ? to ? gasoline process (MTG), The first commercial plant using th&s process was const. ructed at, Motunui, New Zealand and began operation in 1985 with 14, 000 barrel per day capacity. Off ? shore natural gas... is converted to synthesis gas by steam reforming and the methanol synthesis uses conventional technology. The advent of this technology (MTG process), which synthesizes high octane gasoline from methanol, may be contrasted with the Fischer ? Tropsch process...

Yamamoto, Hiroshi

2012-06-07T23:59:59.000Z

390

Ragam: Vachaspathi (64th Melakartha Ragam) AROHANA: S R2 G3 M2 P D2 N2 S ||  

E-Print Network [OSTI]

- R | R , - s ; G M , - p dn S || raa - - Paa -rva ti- - - pa te- - - Ha ra - Pa shu- pa d N- d pm ; ; - N , d- pm G - R | R , - s ; G M , - p dn S || raa - - Paa -rva ti- - - pa te- - - Ha ra - Pa shu- pa- - To zhum Paa- va S ; ; n r snN , -d ; dn | S ; ; S R - sr G R || na - - Su raa-- - su- rar- - To zhum Paa

Kalyanaraman, Shivkumar

391

How many metals does it take to fix N2? A mechanistic overview of biological nitrogen fixation  

Science Journals Connector (OSTI)

...Mol Biol 280 : 669 – 685 . 13 Mayer SM Lawson DM Gormal CA Roe SM Smith BE ( 1999 ) J Mol Biol 292 : 871 – 891 . 14 Jang SB...A Treatise on Dinitrogen Fixation , eds Hardy RWF Bottomley F Burns RC ( Wiley , New York ), pp 569 – 604 . 74 Kraulis PJ ( 1991...

James B. Howard; Douglas C. Rees

2006-01-01T23:59:59.000Z

392

109Agrociencia. (2006) Vol. X N 2 pg. 109 -124 FORESTACIN EN PASTIZALES: HACIA UNA VISIN INTEGRAL DE  

E-Print Network [OSTI]

posiblemente por el inminente comercio de bonos de carbono. Evaluamos como esta transformación afecta la, secuestro de carbono. GRASSLAND AFFORESTATION: TOWARDS AN INTEGRATIVE PERSPECTIVE OF ITS ECOLOGICAL

Jackson, Robert B.

393

King Air flight RICO 20050116 page 1 King Air N2UW flight report for January 16, 2005.  

E-Print Network [OSTI]

of the inversion winds turned westerly; this is clearly visible in the inclination of the turrets in photographs the easterly low level winds. At flight level, winds outside the clouds were from the south, but in clouds the in situ measured updraft was up to 10 m s1 and the LWC approached 2 g m3. The pronounced wind shear near

Vali, Gabor

394

JOURNAL DE PHYSIQUE Colloque C2, supplment au n2, Tome 45, fvrier 1984 page C2-705  

E-Print Network [OSTI]

) a STEM analysis of centrifugally-atomised powders of high-phosphorous steels, and (b) a study the need for detailed microstructural analysis. Also, with the reduction in size of characteristic and an electron energy loss spectrometer. The electron source is a cold tungsten field emitter. There is a two

Paris-Sud XI, Université de

395

Regulation of denitrification at the cellular level: a clue to the understanding of N2O emissions from soils  

Science Journals Connector (OSTI)

...analysis of the community composition. A common feature of strains...fertilization and use of agrochemicals. These operations should...mean that characterizing the composition of denitrifying communities...found between the community composition and its propensity to emit...

2012-01-01T23:59:59.000Z

396

Low-Temperature Desorption of N2O from NO on Rutile TiO2(110...  

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

decreases rapidly as the initially clean, reduced TiO2(110) surface with 5% oxygen vacancies (VO’s) becomes covered with oxygen adatoms and unreacted NO. The maximum...

397

JOURNAL DE PHYSIQUE Colloque C2, supplment au n2, Tome 45, fvrier 1984 page C2-161  

E-Print Network [OSTI]

). Abstract - There is performed mathematical simulation of X-ray optical systems with double-bent crystals. It is shown that curves of reflection efficiency for double-bent crystals have two maxima at Ro/R* = 1 (sphere. For X-ray optical systems with slit sources (diaphragms) it is advisable to use spherical crystals

Boyer, Edmond

398

Positions in the GluN2C-Containing NMDAR Regulate Alcohol Sensitivity and Ion Channel Gating.  

E-Print Network [OSTI]

??The N-methyl-D-aspartate (NMDA) receptor, a subtype of glutamate-gated ion channel, has been shown to be a major target of ethanol in the central nervous system… (more)

Wu, Man

2014-01-01T23:59:59.000Z

399

Moduli spaces of SO(8) instantons on smooth ALE spaces as Higgs branches of 4d N=2 supersymmetric theories  

E-Print Network [OSTI]

The worldvolume theory of D3-branes probing four D7-branes and an O7-plane on $\\mathbb{C}^2/\\mathbb{Z}_2$ is given by a supersymmetric USp x USp gauge theory. We demonstrate that, at least for a particular choice of the holonomy at infinity, we can go to a dual description of the gauge theory, where we can add a Fayet-Iliopoulos term describing the blowing-up of the orbifold to the smooth ALE space. This allows us to express the moduli space of SO(8) instantons on the smooth ALE space as a hyperk\\"ahler quotient of a flat space times the Higgs branch of a class S theory. We also discuss a generalization to $\\mathbb{C}^2/\\mathbb{Z}_{2n}$, and speculate how to extend the analysis to bigger SO groups and to ALE spaces of other types.

Tachikawa, Yuji

2014-01-01T23:59:59.000Z

400

Moduli spaces of SO(8) instantons on smooth ALE spaces as Higgs branches of 4d N=2 supersymmetric theories  

E-Print Network [OSTI]

The worldvolume theory of D3-branes probing four D7-branes and an O7-plane on $\\mathbb{C}^2/\\mathbb{Z}_2$ is given by a supersymmetric USp x USp gauge theory. We demonstrate that, at least for a particular choice of the holonomy at infinity, we can go to a dual description of the gauge theory, where we can add a Fayet-Iliopoulos term describing the blowing-up of the orbifold to the smooth ALE space. This allows us to express the moduli space of SO(8) instantons on the smooth ALE space as a hyperk\\"ahler quotient of a flat space times the Higgs branch of a class S theory. We also discuss a generalization to $\\mathbb{C}^2/\\mathbb{Z}_{2n}$, and speculate how to extend the analysis to bigger SO groups and to ALE spaces of other types.

Yuji Tachikawa

2014-02-18T23:59:59.000Z

Note: This page contains sample records for the topic "n2 h2s hg" 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

On the Action of Acyl Reagents on the Substituted Ureas  

E-Print Network [OSTI]

)gCO RCoCl RNHCONR * HG1 COR The acyl urea dissociates,forming an anilide compound, and an isocyanate and HC1. RNHCONR * HC1 RNHCOR • RNCO HC1. I CCR 2.- RNHCOR ¥ RNCO • HC1 RNHX , CR.HC1 • C02 RN ' The anilide and the Isocyanate react... the following analysis * .1126 gram platinum salt gave .0239 grams platinum. .1103 grams platinum salt gave .0237 grams platinum. Calculated for (CI7Hg0N2)gPi|Cl6 Found Platinum 21.3§~ 21.22 21.49 DI-METATotYL UREA and IKOWLERYL CHLORIDE. 10 grams di...

Roberts, R. Chester

1914-05-15T23:59:59.000Z

402

Microsoft PowerPoint - Chiesa_GT2007-28415.ppt  

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

Gas Phase Impurities on CO Gas Phase Impurities on CO 2 Compression Paolo Chiesa Dipartimento di Energetica - Politecnico di Milano e-mail: paolo.chiesa@polimi.it ASME Turbo Expo 2007 May 14-17, 2007, Montréal (QC), Canada 2 Paolo Chiesa WHY IMPURITIES IN CO 2 STREAMS? ASSUMPTION CO 2 capture and storage is one of the most acceptable solutions to reduce the emission of greenhouse gases into the atmosphere In real power plants, technical and economical reasons bring about that CO 2 streams captured are often impure, meaning that they can also include significant fractions of species such as Ar, N 2 , O 2 , SO 2 , H 2 S or others. Types and concentration of the impurities are essentially dependent on fuel and capture technique adopted 3 Paolo Chiesa CO 2 CAPTURE ALTERNATIVES CO 2 capture in a power cycle eventually falls in one of the following

403

A Biomass-based Model to Estimate the Plausibility of Exoplanet Biosignature Gases  

Science Journals Connector (OSTI)

Biosignature gas detection is one of the ultimate future goals for exoplanet atmosphere studies. We have created a framework for linking biosignature gas detectability to biomass estimates, including atmospheric photochemistry and biological thermodynamics. The new framework is intended to liberate predictive atmosphere models from requiring fixed, Earth-like biosignature gas source fluxes. New biosignature gases can be considered with a check that the biomass estimate is physically plausible. We have validated the models on terrestrial production of NO, H2S, CH4, CH3Cl, and DMS. We have applied the models to propose NH3 as a biosignature gas on a "cold Haber World," a planet with a N2-H2 atmosphere, and to demonstrate why gases such as CH3Cl must have too large of a biomass to be a plausible biosignature gas on planets with Earth or early-Earth-like atmospheres orbiting a Sun-like star. To construct the biomass models, we developed a functional classification of biosignature gases, and found that gases (such as CH4, H2S, and N2O) produced from life that extracts energy from chemical potential energy gradients will always have false positives because geochemistry has the same gases to work with as life does, and gases (such as DMS and CH3Cl) produced for secondary metabolic reasons are far less likely to have false positives but because of their highly specialized origin are more likely to be produced in small quantities. The biomass model estimates are valid to one or two orders of magnitude; the goal is an independent approach to testing whether a biosignature gas is plausible rather than a precise quantification of atmospheric biosignature gases and their corresponding biomasses.

S. Seager; W. Bains; R. Hu

2013-01-01T23:59:59.000Z

404

REMOVAL OF Hg(II) FROM AN AQUEOUS MEDIUM BY ADSORPTION ONTO NATURAL AND ALKYL-AMINE MODIFIED BRAZILIAN BENTONITE  

Science Journals Connector (OSTI)

...El-Rassy, H. (2010) Mercury removal from aqueous solutions using silica, polyacrylamine and hybrid silica-polyacrylamide aerogels. Chemical Engineering Science , 159 , 107-115. Ruiz, V.S.O. and Airoldi, C. (2004) Thermochemical data for n-alkylmonoamine...

Denis L. Guerra; Emiliano M. Silva; Weber Lara; Adriano C. Batista

405

OPTIMIZATION OF GRADED BAND GAP CdHgTe SOLAR CELLS A. BOUAZZI (*), Y. MARFAING and J. MIMILA-ARROYO  

E-Print Network [OSTI]

limited to 6 % in Cu2Te/CdTe junctions [4, 5], 7.9 % in CdS/CdTe heterojunctions and 6 % in homojunc with uniform doping followed by a base region with uni- form gap and doping. Our goal is to find the optimum

Boyer, Edmond

406

Heterometallic Ln/Hg Compounds with Fluorinated Thiolate Ligands Santanu Banerjee, Thomas J. Emge, and John G. Brennan*  

E-Print Network [OSTI]

-15699. (b) Rodriguez-Cortinas, R.; Avecilla, F.; Platas-Iglesias, C.; Imbert, D.; Buenzli, J.; de Blas, A.; Rodriguez-Blas, T. Inorg. Chem. 2002, 41, 5336-5349. (c) Buenzli, J. G.; Piguet, C. Chem. ReV. 2002, 102.; Qian, Y.-T.; Huang, J.-S. Polyhedron 2001, 20, 1795-1802. (2) (a) James, C.; Willand, P. S. J. Am. Chem

Lawson, Catherine L.

407

Fast surface temperature measurement of Teflon propellant-in-pulsed ablative discharges using HgCdTe photovoltaic cells  

SciTech Connect (OSTI)

High-speed mercury cadmium telluride photovoltaic detectors, sensitive to infrared emission, are investigated as a means of measuring surface temperature on a microsecond time frame during pulsed ablative discharges with Teflon trade mark sign as the ablated material. Analysis is used to derive a governing equation for detector output voltage for materials with wavelength dependent emissivity. The detector output voltage is experimentally calibrated against thermocouples embedded in heated Teflon. Experimental calibration is performed with Teflon that has been exposed to {approx}200 pulsed discharges and non-plasma-exposed Teflon and is compared to theoretical predictions to analyze emissivity differences. The diagnostic capability is evaluated with measurements of surface temperature from the Teflon propellant of electric micropulsed plasma thrusters. During the pulsed current discharge, there is insufficient information to claim that the surface temperature is accurately measured. However, immediately following the discharge, the postpulse cooling curve is measured. The statistical spread of postpulse surface temperature from shot to shot, most likely due to arc constriction and localization, is investigated to determine an operational envelope for postpulse temperature and mass ablation. This information is useful for determining postpulse ablation contributions to mass loss as well as evaluation of theoretical discharge models currently under development.

Antonsen, Erik L.; Burton, Rodney L.; Reed, Garrett A.; Spanjers, Gregory G. [University of Illinois at Urbana-Champaign, Illinois 61801 (United States); ERC Inc., Edwards AFB, California 93524 (United States); Air Force Research Laboratory, Space Vehicles Directorate, Kirtland AFB, New Mexico 87117 (United States)

2006-10-15T23:59:59.000Z

408

Fate of As, Se, and Hg in a Passive Integrated System for Treatment of Fossil Plant Wastewater  

SciTech Connect (OSTI)

TVA is collaborating with EPRI and DOE to demonstrate a passive treatment system for removing SCR-derived ammonia and trace elements from a coal-fired power plant wastewater stream. The components of the integrated system consist of trickling filters for ammonia oxidation, reaction cells containing zero-valent iron (ZVI) for trace contaminant removal, a settling basin for storage of iron hydroxide floc, and anaerobic vertical-flow wetlands for biological denitrification. The passive integrated treatment system will treat up to 0.25 million gallons per day (gpd) of flue gas desulfurization (FGD) pond effluent, with a configuration requiring only gravity flow to obviate the need for pumps. The design of the system will enable a comparative evaluation of two parallel treatment trains, with and without the ZVI extraction trench and settling/oxidation basin components. One of the main objectives is to gain a better understanding of the chemical transformations that species of trace elements such as arsenic, selenium, and mercury undergo as they are treated in passive treatment system components with differing environmental conditions. This progress report details the design criteria for the passive integrated system for treating fossil power plant wastewater as well as performance results from the first several months of operation. Engineering work on the project has been completed, and construction took place during the summer of 2005. Monitoring of the passive treatment system was initiated in October 2005 and continued until May 18 2006. The results to date indicate that the treatment system is effective in reducing levels of nitrogen compounds and trace metals. Concentrations of both ammonia and trace metals were lower than expected in the influent FGD water, and additions to increase these concentrations will be done in the future to further test the removal efficiency of the treatment system. In May 2006, the wetland cells were drained of FGD water, refilled with less toxic ash pond water, and replanted due to low survival rates from the first planting the previous summer. The goals of the TVA-EPRI-DOE collaboration include building a better understanding of the chemical transformations that trace elements such as arsenic, selenium, and mercury undergo as they are treated in a passive treatment system, and to evaluate the performance of a large-scale replicated passive treatment system to provide additional design criteria and economic factors.

Terry Yost; Paul Pier; Gregory Brodie

2007-12-31T23:59:59.000Z

409

Determination of certain trapping parameters in mercury sulphide (03B1-HgS) by Thermally Stimulated Conductivity  

E-Print Network [OSTI]

, 6, 7, 8] is 2.275 eV at liquid helium, 2.250 eV at liquid nitrogen and 2.100 eV at room temperature les résultats de nos mesures de courants stimulés thermiquement sur le sulfure de mercure. Celles profondeur du niveau (Et = 300 meV), la densité de pièges (Nt = 2,55 1012 cm- 3) et la section efficace de

Boyer, Edmond

410

TUNA FISH (T-30) – A new proficiency testing material for the determination of As and Hg in seafood  

Science Journals Connector (OSTI)

The quality of the aquatic and marine environment can be monitored by the determination of pollutants in organisms living in this environment. Certified reference materials and well-organised proficiency tests ar...

B. Gawlik; Martine Druges; Michele Bianchi…

1997-06-01T23:59:59.000Z

411

PM10, Pb (1999/30/C) As, Ni, Cd, Hg, [BaP] (2004/107/C)  

E-Print Network [OSTI]

Concentration,ng/ng PMF marine aerosolBiomass burning Oil combustion Road dust Marine aerosol #12; ­ `' 0 0.2 0.4 0.6 0.8 1 Oil combustion Road dust Motor vehicles Biomass burning Road dust 2 Marine

412

Systems Testing of a Free Hg Jet System for Use in a High-Power Target Experiment  

E-Print Network [OSTI]

, USA A. Fabich, I. Efthymiopolous, CERN, Geneva, Switzerland P. Titus, MIT Plasma Science and Fusion Center, Cambridge, MA 02139, USA K. McDonald, Princeton University, Princeton, NJ 08544, USA The MERIT

McDonald, Kirk

413

High-efficiency, energy-scalable, coherent 130-nm source by four-wave mixing in Hg vapor  

Science Journals Connector (OSTI)

Coherent vacuum-ultraviolet (VUV) pulses with energy of 1.1 mJ, 2.2-nsec pulse length (2 MW cm?2 unfocused), and measured bandwidth ?0.1 cm?1 have been achieved...

Muller, C H; Smith, A V; Lowenthal, D D; DeFaccio, M A

1988-01-01T23:59:59.000Z

414

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

E-Print Network [OSTI]

~o Paulo, 135960-170 Sa~o Paulo, SP, Brazil 2 Institute of Semiconductor Physics, Novosibirsk 630090 effect (QHE) has been renewed due to observation of the conductance quantization in the locally gated equal to 6.3 nm, the energy spectrum becomes inverted and one changes to a two-dimensional topological

Gusev, Guennady

415

H5N2 Avian Influenza Outbreak in Texas in 2004: the First Highly Pathogenic Strain in the United States in 20 Years?  

Science Journals Connector (OSTI)

...however, we cannot predict which low-pathogenicity...14-day-old ECE passage model system, and all the...Fortunately, because the outbreak was diagnosed quickly...Application of Directigen FLU-A for the detection...with three different outbreaks in commercial poultry...

Chang-Won Lee; David E. Swayne; Jose A. Linares; Dennis A. Senne; David L. Suarez

2005-09-01T23:59:59.000Z

416

Electron density measurements of atmospheric-pressure non-thermal N2 plasma jet by Stark broadening and irradiance intensity methods  

Science Journals Connector (OSTI)

An atmospheric-pressure non-thermal plasma jet excited by high frequency alternating current using nitrogen is developed and the electron density in the active region of this plasma jet is investigated by two different methods using optical emission spectroscopy Stark broadening and irradiance intensity method. The irradiance intensity method shows that the average electron density is about 1020/m3 which is slightly smaller than that by the Stark broadening method. However the trend of the change in the electron density with input power obtained by these two methods is consistent.

2014-01-01T23:59:59.000Z

417

Observation of daytime N2O5 in the marine boundary layer during New England Air Quality StudyIntercontinental Transport and  

E-Print Network [OSTI]

; Wallington et al., 1986] and aldehydes [Atkinson, 1991; D'Anna et al., 2001] are efficient pathways

418

Finite-size lattice method and the roughening transition Service de Physique Thorique, CEN Saclay, BP n 2, 91190 Gif sur Yvette, France  

E-Print Network [OSTI]

L-275 Finite-size lattice method and the roughening transition J. M. Luck Service de Physique'ordre infini, ce que pré- voient des arguments d'universalité. Abstract. 2014 The roughening transition. - It has been shown that the roughening transition, which was introduced in solid state physics, also plays

Boyer, Edmond

419

Process sensing and metrology in gate oxide growth by rapid thermal chemical vapor deposition from SiH4 and N2O  

E-Print Network [OSTI]

SiO2 film. An optimal process window had been previously identified at a total pressure of 5 Torr, but also quantitative metrology for the film deposition process. © 1999 American Vacuum Society. S0734-211X the wafer. Radiative heating of the wafer was achieved through a quartz window by an array of halogen lamps

Rubloff, Gary W.

420

Ion-molecule reactions involving HCO$^+$ and N$_2$H$^+$: Isotopologue equilibria from new theoretical calculations and consequences for interstellar isotope fractionation  

E-Print Network [OSTI]

$Aims$: We revisit with new augmented accuracy the theoretical dynamics of basic isotope exchange reactions involved in the $^{12}$C/$^{13}$C, $^{16}$O/$^{18}$O, and $^{14}$N/$^{15}$N balance because these reactions have already been studied experimentally in great detail. $Methods$: Electronic structure methods were employed to explore potential energy surfaces, full-dimensional rovibrational calculations to compute rovibrational energy levels that are numerically exact, and chemical network models to estimate the abundance ratios under interstellar conditions. $Results$: New exothermicities, derived for HCO$^+$ reacting with CO, provide rate coefficients markedly different from previous theoretical values in particular at low temperatures, resulting in new abundance ratios relevant for carbon chemistry networks. In concrete terms, we obtain a reduction in the abundance of H$^{12}$C$^{18}$O$^+$ and an increase in the abundance of H$^{13}$C$^{16}$O$^+$ and D$^{13}$C$^{16}$O$^+$. In all studied cases, the reac...

Mladenovi?, Mirjana

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "n2 h2s hg" 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

Simulation studies of the Cl{sup -}+ CH{sub 3}I S{sub N}2 nucleophilic substitution reaction: Comparison with ion imaging experiments  

SciTech Connect (OSTI)

In the previous work of Mikosch et al.[Science 319, 183 (2008)], ion imaging experiments were used to study the Cl{sup -}+ CH{sub 3}I {yields} ClCH{sub 3}+ I{sup -} reaction at collision energies E{sub rel} of 0.39, 0.76, 1.07, and 1.9 eV. For the work reported here MP2(fc)/ECP/d direct dynamics simulations were performed to obtain an atomistic understanding of the experiments. There is good agreement with the experimental product energy and scattering angle distributions for the highest three E{sub rel}, and at these energies 80% or more of the reaction is direct, primarily occurring by a rebound mechanism with backward scattering. At 0.76 eV there is a small indirect component, with isotropic scattering, involving formation of the pre- and post-reaction complexes. All of the reaction is direct at 1.07 eV. Increasing E{sub rel} to 1.9 eV opens up a new indirect pathway, the roundabout mechanism. The product energy is primarily partitioned into relative translation for the direct reactions, but to CH{sub 3}Cl internal energy for the indirect reactions. The roundabout mechanism transfers substantial energy to CH{sub 3}Cl rotation. At E{sub rel}= 0.39 eV both the experimental product energy partitioning and scattering are statistical, suggesting the reaction is primarily indirect with formation of the pre- and post-reaction complexes. However, neither MP2 nor BhandH/ECP/d simulations agree with experiment and, instead, give reaction dominated by direct processes as found for the higher collision energies. Decreasing the simulation E{sub rel} to 0.20 eV results in product energy partitioning and scattering which agree with the 0.39 eV experiment. The sharp transition from a dominant direct to indirect reaction as E{sub rel} is lowered from 0.39 to 0.20 eV is striking. The lack of agreement between the simulations and experiment for E{sub rel}= 0.39 eV may result from a distribution of collision energies in the experiment and/or a shortcoming in both the MP2 and BhandH simulations. Increasing the reactant rotational temperature from 75 to 300 K for the 1.9 eV collisions, results in more rotational energy in the CH{sub 3}Cl product and a larger fraction of roundabout trajectories. Even though a ClCH{sub 3}-I{sup -} post-reaction complex is not formed and the mechanistic dynamics are not statistical, the roundabout mechanism gives product energy partitioning in approximate agreement with phase space theory.

Zhang Jiaxu [Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Molecular Reaction Dynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (China); Lourderaj, Upakarasamy; Sun Rui; Hase, William L. [Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061 (United States); Mikosch, Jochen [National Research Council of Canada, Steacie Institute for Molecular Sciences, 100 Sussex Drive, Ottawa, Ontario K1AOR6 (Canada); Wester, Roland [Institut fur Ionenphysik und Angewandte Physik, Universitaet Innsbruck, Technikerstrasse 25/3, A-6020 Innsbruck (Austria)

2013-03-21T23:59:59.000Z

422

Implications of Exhaust Gas, CO2, and N2 Recirculation on Heavy-Duty Diesel Engine Performance, Soot, and NO Emissions: A Comparative Study  

Science Journals Connector (OSTI)

Marine Internal Combustion Engines Laboratory, Section of Naval Architecture & Marine Engineering, Hellenic Naval Academy, End of Hatzikiriakou Ave., 18539 Piraeus, Greece ... (1-3) Hence, under certain conditions, the successful implementation of various internal measures in HD diesel engines may lead to their compliance with current and near-future emission standards, thus diminishing the need for complex and costly technologies of after-engine pollution control. ... (16, 17) Ladommatos et al.(11-14) in their fundamental work successfully managed to isolate the three aforementioned major effects of EGR on diesel engine combustion characteristics and NOx emissions, revealing that, under constant inlet pressure, dilution of the charge mixture is the most influential mechanism on the reduction of engine-out NOx. ...

Dimitrios T. Hountalas; Spiridon I. Raptotasios; Theodoros C. Zannis

2013-07-15T23:59:59.000Z

423

9 0 A S T R O N O M Y N O W / J U N 2 0 0 2 he current debate over missile defence  

E-Print Network [OSTI]

Saddam Hussein, who set fire to the oil wells in Kuwait and caused an environmental disaster hazardous for peaceful as well as military purposes. Every bit of debris in orbit higher than about 800 km

California at Santa Cruz, University of

424

OH number densities and plasma jet behavior in atmospheric microwave plasma jets operating with different plasma gases (Ar, Ar/N2, and Ar/O2)  

Science Journals Connector (OSTI)

OH radical number density in multiple atmospheric pressure microwave plasma jets is measured using UV cavity ringdown ... 0–0) band at 308 nm. The plasma cavity was excited by a 2.45 GHz microwave plasma source a...

C. Wang; N. Srivastava

2010-12-01T23:59:59.000Z

425

Acidic ionic liquid/water solution as both medium and proton source for electrocatalytic H2 evolution by [Ni(P2N2)2]2+ complexes  

Science Journals Connector (OSTI)

...by passage through a water/oxygen/hydrocarbon trap S7 (Restek 22464) and an...Atlantic Microlab Inc. using V2O5 as a combustion catalyst. Electrochemical Methods...portions. After the first addition, heat was evolved and a white vapor formed...

Douglas H. Pool; Michael P. Stewart; Molly O’Hagan; Wendy J. Shaw; John A. S. Roberts; R. Morris Bullock; Daniel L. DuBois

2012-01-01T23:59:59.000Z

426

A method to measure Kr/N2 ratios in air bubbles trapped in ice cores and its application in reconstructing past mean ocean temperature  

E-Print Network [OSTI]

in krypton inventory in the glacial ocean due to higher gas solubility in colder water causes a decrease reflect past ocean temperature change due to the dependence of gas solubility on temperature. The increase of LGM deep ocean temperature based on foraminiferal d18 O and sediment pore water d18 O and chlorinity

Severinghaus, Jeffrey P.

427

Global long-lived chemical modes excited in a 3-D chemistry transport model: Stratospheric N 2 O, NO y , O 3 and CH 4 chemistry  

E-Print Network [OSTI]

chemistry about a climatology of trace?gas composition [as well as the tabulated climatology and partial derivativesteady?state control?run climatology. (c) Mode?1 is scaled

Hsu, Juno; Prather, Michael J

2010-01-01T23:59:59.000Z

428

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

E-Print Network [OSTI]

combustion of iso octane.................................................................................................... 24 3 Percentage availability destroyed for different ?Cooled? EGR fractions as a function of reactant temperature for constant... volume combustion of iso octane, reactant pressure of 500 kPa......................................................... 24 4 Product temperature for different ?Cooled? EGR fractions as a function of reactant temperature for constant pressure combustion...

Sivadas, Hari Shanker

2009-06-02T23:59:59.000Z

429

Statistica inferenziale scheda n.2 1 Matematica e statistica: dai dati ai modelli alle scelte www.dima.unige/pls_statistica  

E-Print Network [OSTI]

parametro, usando dati campionari. In questa scheda costruiremo un intervallo nel quale ci aspettiamo stia

Rogantin, Maria Piera

430

Vector Analyzing Power at Theta-Lab=18-Degrees for the H-2(p-],N)2p Reaction at 21.3 Mev  

E-Print Network [OSTI]

agreement with the exact calculations of Bruinsma and Van Wagen- ingen" and the perturbative calculations of Stolk and Tjon' for n-d breakup at 22.7 MeV, which are also shown in Fig. 2. The suspected errors in the A~ values of Ref. 7 are attributed...

Nath, S.; Northcliffe, L. C.; Hiebert, John C.; Woolverton, H. L.; York, R. L.; Graves, R. G.; Craft, B. C.

1984-01-01T23:59:59.000Z

431

Cancer Risk Assessment for the Environmental Mutagen and Carcinogen Crotonaldehyde on the Basis of TD50 and Comparison with 1,N2-Propanodeoxyguanosine Adduct Levels  

Science Journals Connector (OSTI)

...of detection. d Consumption, 200 g/day. e...nucleotides). f Consumption, 0.1 liter/day. g Consumption, 0.5 liter/day...analysis of diesel engine exhausts for low-molecular...and effects of fuel composition. SAE...

Erwin Eder and Budiawan

2001-08-01T23:59:59.000Z

432

Cancer Risk Assessment for the Environmental Mutagen and Carcinogen Crotonaldehyde on the Basis of TD50 and Comparison with 1,N2-Propanodeoxyguanosine Adduct Levels  

Science Journals Connector (OSTI)

...of detection. d Consumption, 200 g/day...nucleotides). f Consumption, 0.1 liter/day. g Consumption, 0.5 liter...The analysis of diesel engine exhausts for low-molecular...and effects of fuel composition. SAE...

Erwin Eder and Budiawan

2001-08-01T23:59:59.000Z

433

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

E-Print Network [OSTI]

County, California, under a Mediterranean climate. We focused on the spatiotemporal variation of GHG in a Mediterranean climate Juhwan Lee a, *, Jan W. Hopmans b , Chris van Kessel a , Amy P. King b , K. Jeannie Evatt of California, Davis, CA 95616, USA b Department of Land, Air, and Water Resources, University of California

van Kessel, Chris

434

Atomic-Scale Spin-Polarized Scanning Tunneling Microscopy Applied To Mn3N2(010) Haiqiang Yang and Arthur R. Smith  

E-Print Network [OSTI]

and Arthur R. Smith Condensed Matter and Surface Science Program, Department of Physics and Astronomy, Ohio

435

Direct Measurements of Steady-State Kinetics of Cyanobacterial N2 Uptake by Membrane-Leak Mass Spectrometry and Comparisons Between Nitrogen Fixation and Acetylene Reduction  

Science Journals Connector (OSTI)

...from five batches of cyanobacteria The average value of Km for light-induced are shown in Table 2. The conversion factor in etylene reduction at 35 C for five different this case was again greater than the stoichiomet- tches of A. variabilis was 385 50...

Bent Borg Jensen; Raymond P. Cox

1983-04-01T23:59:59.000Z

436

A quantum cascade laser-based optical feedback cavity-enhanced absorption spectrometer for the simultaneous measurement of CH4 and N2O in air  

Science Journals Connector (OSTI)

Optical feedback cavity-enhanced absorption spectroscopy (OF CEAS) has been demonstrated with a thermoelectrically cooled continuous wave distributed feedback quantum cascade laser (QCL) operating at wavelengths ...

D. J. Hamilton; A. J. Orr-Ewing

2011-03-01T23:59:59.000Z

437

Acidic ionic liquid/water solution as both medium and proton source for electrocatalytic H2 evolution by [Ni(P2N2)2]2+ complexes  

Science Journals Connector (OSTI)

...regressions use the data shown with...water/oxygen/hydrocarbon trap S7...using V2O5 as a combustion catalyst. Electrochemical...Fc+ /Fc couple. Data from t = 0.038...first addition, heat was evolved and a...6], so only the data with [6] spanning...

Douglas H. Pool; Michael P. Stewart; Molly O’Hagan; Wendy J. Shaw; John A. S. Roberts; R. Morris Bullock; Daniel L. DuBois

2012-01-01T23:59:59.000Z

438

Genetic analysis of nonstructural genes (NS1 and NS2) of H9N2 and H5N1 viruses recently isolated in Israel  

Science Journals Connector (OSTI)

The genome of avian influenza viruses consist of eight separate segments of single-stranded negative-sense RNA, which code 10 viral proteins. Two nonstructural proteins—NS1 and NS2—are coded by segment 8, which i...

Caroline Banet-Noach; Alexander Panshin; Natalia Golender; Lubov Simanov…

2007-04-01T23:59:59.000Z

439

Effect of Inoculation with N2-Fixing Spirilla and Azotobacter on Nitrogenase Activity on Roots of Maize Grown Under Subtropical Conditions  

Science Journals Connector (OSTI)

...subtropical conditions provided in a greenhouse. Acetylene-reducing activity...subtropical conditions in a greenhouse. The effects of the inoculation...The plants were grown in the greenhouse with supplementary lighting and heating to give a 14...

N. A. Hegazi; M. Monib; K. Vlassak

1979-10-01T23:59:59.000Z

440

T h e R e n s s e l a e R P l a n 2 0 2 4 initiatives  

E-Print Network [OSTI]

" and "infrastructural Resilience, Sustainability, and Stewardship." in Undergraduate education, we will target an under research umbrellas: "Beyond the internet: Digital Meets and "infrastructural Resilience, Sustainability, and global levels. in enabling Change, we will mount a comprehensive fund-raising campaign, building upon

Bystroff, Chris

Note: This page contains sample records for the topic "n2 h2s hg" 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

JOURNAL DE PHYSIQUE Colloque C 1, supplment au n 2-3, Tome 32, Fvrier-Mars 1971, page C 1 -503 NEUTRON DIFFRACTION, MOSSBAUER  

E-Print Network [OSTI]

in neutron scattering amplitudes of Ti and V (b = - 0.38 and - 0.05 respectively) and Ta (b = 0.70 x 10- 1 2.17 (*) With temperature factor B = 0.4 A. The large contribution of oxygen to the neutron scattering permits us to refine NEUTRON DIFFRACTION, MOSSBAUER AND MAGNETIC INVESTIGATION OF RUTILE-TYPE TANTALATES MTa04 (M = Ti, V, Cr

Boyer, Edmond

442

Cancer Risk Assessment for the Environmental Mutagen and Carcinogen Crotonaldehyde on the Basis of TD50 and Comparison with 1,N2-Propanodeoxyguanosine Adduct Levels  

Science Journals Connector (OSTI)

...lower than that expected from the general rule of Otteneder and Lutz (36...Karasek F. W. The analysis of diesel engine exhausts for low-molecular weight...Characterization of heavy-duty diesel gaseous and particulate emissions...

Erwin Eder and Budiawan

2001-08-01T23:59:59.000Z

443

Power calculations D.A. Freedman December 2007 What is the power of a randomized controlled experiment? We assume there are n1 + n2  

E-Print Network [OSTI]

Power calculations D.A. Freedman December 2007 What is the power of a randomized controlled of the null against the alternative µ1 = µ2, and we compute power at µ1 = µ2 + k where k > 0 is chosen so is asymptotically distributed as N(k, 1), where k = k/f Suppose k > 2. If Z is N(0, 1), asymptotic power is then P

Sekhon, Jasjeet S.

444

7694 J. Am. Chem. SOC.1981,103, 7694-7696 Table 1. Applicationof Equation 2 to sN2  

E-Print Network [OSTI]

to extend the study of SN2 transition structures reported here. Acknowledgment. This research has been-Evans-Polanyi-Leffler-Hammond effect:%l6the more exothermicthe reaction, the more closely the transition structure resembles the higher of the reaction than by electronic in- teractions between the entering and leaving groups.)' It is particularly

Schlegel, H. Bernhard

445

Gographie physique et Quaternaire, 2000, vol. 54, n 2, p. 135-141, 8 fig., 3 tabl. LITTLE ICE AGE HISTORY OF  

E-Print Network [OSTI]

on the northeast flank of Tzeetsaytsul Peak and terminates in a moraine-dammed lake.A stream draining thelakehas, auparcprovincialdeTweedsmuir.Leglaciertire son origine d'un champ de glace situé sur le flanc nord-est du

Smith, Dan

446

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

E-Print Network [OSTI]

, threshold behavior, and many-body effects such as bound-free correlation, but also for technological ap planetary atmospheres and photoelectric heating in astrophysics. Be- cause rotational energy levels are veryUltrasimple calculation of very-low-energy momentum-transfer and rotational-excitation cross

Morrison, Michael A.

447

N2-Guanyl and N6-Adenyl Arylation of Chicken Erythrocyte DNA by the Ultimate Carcinogen of 4-Nitroquinoline 1-Oxide  

Science Journals Connector (OSTI)

...mass spectroscopy and nuclear magnetic resonance the...4-acetoxyaminoquinoline 1-oxide; NMR, nuclear magnetic resonance...immediately evaporated under vacuum. The purity of the...by a 7- to 10-kV accelerator voltage and travel down...by means of standard nuclear electronics which include...

Sylvie Galiègue-Zouitina; Bernard Bailleul; Y-Michel Ginot; Bruno Perly; Paul Vigny; and Marie-H. Loucheux-Lefebvre

1986-04-01T23:59:59.000Z

448

JOURNAL DE PHYSIQUE Colloque C1, suppl6ment au n"2, Tome 47, f6vrier 1986 page c1-601  

E-Print Network [OSTI]

critical stress intensity factors and subcritical crack growth have been taken into account. It is shown subjected to sub-critical growth (stress corrosion). Only the propagation of semi-elliptical flaws with large cracks in specimens (SENB, DCB, DT...). In this respect, simulation with local effective critical

Paris-Sud XI, Université de

449

A Hybrid Gas Cleaning Process for Production of Ultraclean Syngas  

SciTech Connect (OSTI)

The overall objective of this project is to develop technologies for cleaning/conditioning IGCC generated syngas to meet contaminant tolerance limits for fuel cell and chemical production applications. The specific goals are to develop processes for (1) removal of reduced sulfur species to sub-ppm levels using a hybrid process consisting of a polymer membrane and a regenerable ZnO-coated monolith or a mixed metal oxide sorbent; (2) removal of hydrogen chloride vapors to sub-ppm levels using an inexpensive, high-surface-area material; and (3) removal of NH3 with acidic adsorbents followed by conversion of this NH3 into nitrogen and water. Existing gasification technologies can effectively and efficiently convert a wide variety of carbonaceous feedstocks (coal, petcoke, resids, biomass, etc.) into syngas, which predominantly contains carbon monoxide and hydrogen. Unfortunately, the impurities present in these carbonaceous feedstocks are converted to gaseous contaminants such as H2S, COS, HCl, NH3, alkali macromolecules and heavy metal compounds (such as Hg) during the gasification process. Removal of these contaminants using conventional processes is thermally inefficient and capital intensive. This research and development effort is focused on investigation of modular processes for removal of sulfur, chlorine, nitrogen and mercury compounds from syngas at elevated temperature and pressures at significantly lower costs than conventional technologies.

Merkel, T.C.; Turk, B.S.; Gupta, R.P.; Cicero, D.C.; Jain, S.C.

2002-09-20T23:59:59.000Z

450

Controlling Emissions of SOx and NOx from power plants  

E-Print Network [OSTI]

#12;Sulfur Removal Sulfur is removed from crude oil by the catalytic reaction: R-S + H2 H2S + R Until the mid 1970's the H2S was mixed back into the fuel gas. The problem with this is that the H2S is burned + CO2 This is a two step process including the scrubber and the effluent hold tank. CaSO4 (gypsum

Toohey, Darin W.

451

* Corresponding author: Tel: +33 2 23 23 81 57 / Fax: + 33 2 23 23 81 20 Email address : pierre-francois.biard@ensc-rennes.fr  

E-Print Network [OSTI]

):50 51 H2S + 4 NaOCl + 2 NaOH Na2SO4 + 4 NaCl + 2 H2O (1)52 53 H2S consumption in the liquid phase wire mesh packing structure where liquid and gas flow co-currently at high velocity (> 1220 m.s-1 ). H2 of the process. Correlations were developed to predict both the23 pressure drop and the H2S removal efficiency

Boyer, Edmond

452

Sulfur Degassing From Volcanoes: Source Conditions, Surveillance, Plume Chemistry and Earth System Impacts  

E-Print Network [OSTI]

of sulfur in magmas owes much to its multiple valence states (-II, 0, IV, VI), speciation (e.g., S2, H2S, SO on the redox chemistry of sulfur: by reducing sulfur, thiosulfate, sulfite and sulfate to H2S, or oxidizing sulfur and H2S to sulfate (e.g., Takano et al. 1997; Amend and Shock 2001; Shock et al. 2010

Boyer, Edmond

453

E-Print Network 3.0 - air voc flow Sample Search Results  

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

Geosciences 28 ACCEPTED BY WATER ENVIRONMENT RESEARCH ODOR AND VOC REMOVAL FROM WASTEWATER TREATMENT PLANT Summary: of biofilters for sequential removal of H2S and VOCs from...

454

E-Print Network 3.0 - automotive fuel ratings Sample Search Results  

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

(H2S, SO2, ... Source: DOE Office of Energy Efficiency and Renewable Energy, Hydrogen, Fuel Cells and Infrastructure Technologies Program Collection: Energy Storage, Conversion...

455

Waste-to-Energy: Hawaii and Guam Energy Improvement Technology...  

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

ESTCP Environmental Security Technology Certification Program FY fiscal year GEM Green Energy Machine H 2 S hydrogen sulfide HECO Hawaii Electric Company HEDWEC...

456

Slide 1  

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

INNER-SHELL SPECTROSCOPY (ISS) BEAMLINE CHARACTERISTICS Understand the interaction of Hg with bacterial cell surfaces: The Hg L III edge XAS analysis showed that Hg complexes...

457

A Biomass-based Model to Estimate the Plausibility of Exoplanet Biosignature Gases  

E-Print Network [OSTI]

Biosignature gas detection is one of the ultimate future goals for exoplanet atmosphere studies. We have created a framework for linking biosignature gas detectability to biomass estimates, including atmospheric photochemistry and biological thermodynamics. The new framework is intended to liberate predictive atmosphere models from requiring fixed, Earth-like biosignature gas source fluxes. New biosignature gases can be considered with a check that the biomass estimate is physically plausible. We have validated the models on terrestrial production of NO, H2S, CH4, CH3Cl, and DMS. We have applied the models to propose NH3 as a biosignature gas on a "cold Haber World," a planet with a N2-H2 atmosphere, and to demonstrate why gases such as CH3Cl must have too large of a biomass to be a plausible biosignature gas on planets with Earth or early-Earth-like atmospheres orbiting a Sun-like star. To construct the biomass models, we developed a functional classification of biosignature gases, and found that gases (such...

Seager, S; Hu, R

2013-01-01T23:59:59.000Z

458

Corrosion behavior of an HVOF-sprayed Fe3Al coating in a high-temperature oxidizing/sulfidizing environment  

SciTech Connect (OSTI)

An iron aluminide (Fe3Al) intermetallic coating was deposited onto a F22 (2.25Cr-1Mo) steel substrate using a JP-5000 high velocity oxy-fuel (HVOF) thermal spray system. The as-sprayed coating was examined by electron microscopy and X-ray diffraction and was characterized in terms of oxidation and adhesion. Fe3Al-coated steel specimens were exposed to a mixed oxidizing/sulfidizing environment at 500, 600, 700, and 800DGC for approximately seven days. The gaseous environment consisted of N2-10%CO-5%CO2-2%H2O-0.12%H2S (by volume). All specimens gained mass after exposure to the environment and the mass gains were found to be inversely proportional to temperature increases. Representative specimens exposed at each temperature were cross-sectioned and subjected to examination under a scanning electron microscope (SEM) and X-ray mapping. Results are presented in terms of corrosion weight gain and corrosion product formation. The purpose of the research presented here was to evaluate the effectiveness of an HVOF-sprayed Fe3Al coating in protecting a steel substrate exposed to a fossil energy environment.

Covino, Bernard S., Jr.; Bullard, Sophie J.; Cramer, Stephen D.; Holcomb, Gordon R.; Ziomek-Moroz, Margaret; Shrestha, S. (TWI Ltd.); Harvey, D. (TWI Ltd.)

2005-01-01T23:59:59.000Z

459

Principal agent of energy and mass exchange between the ocean and the Earth's crust  

E-Print Network [OSTI]

to H2S (SO4 2- + Fe2+ H2S + Fe2O3) Si, Fe (Zn, Cu) and Mn are gained (i.e. leached out of the rock in chloro-complexes Phase separation Separation into two phases by boiling, condensation, vapor release

Siebel, Wolfgang

460

J. PNYS IV FRANCE 7 ( 1997) Colloque C1, Supplementau Journal de Physique I11 de mars 1997  

E-Print Network [OSTI]

high temperature H2S removal. In addition,silicon carbide is a chemicallyinert material which cannot Temperature Removal of H2Sover Iron Oxide Supported on Sic Sorbent C. Pham-Huu, C. Estournes*, B. Heinrich, C on high specificsurface area Sic, is very efficient for the H2S removal from hot exhaust gas. The specific

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "n2 h2s hg" 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

Operational aspects of the desulfurization process of energy gases mimics in biotrickling filters5  

E-Print Network [OSTI]

. Introduction Energy rich off-gases such as biogas are sometimes not used for electric power generation due impurities. H2S concentrations in biogas can range from 0.1 to 5 We dedicate this article to the memory/v (1000e20,000 ppmv), whereas the specifications for the maximum content of H2S in typical biogas

462

Hydrogen Sulfide Measurement by Headspace-gas Chromatography-mass Spectrometry (HS-GC-MS): Application to Gaseous Samples and Gas Dissolved in Muscle  

Science Journals Connector (OSTI)

......cystathionine beta-synthase and cystathionine gamma-lyase, H2S acts as a myorelaxant and vasodilator and is also active in the brain as a neurotransmitter, where H2S increases the response of the N-methyl-d-aspartate receptor and facilitates long-term......

Vincent Varlet; Nicole Giuliani; Cristian Palmiere; Géraldine Maujean; Marc Augsburger

2014-10-01T23:59:59.000Z

463

atile-rich lo over 4.6 aeons. In fact, the Peale et al. theory suggests many such  

E-Print Network [OSTI]

abundant. Various sulfur compounds such as SO2 and H2S are Fommon constituents of terrestrial vol- 9anoes to oxidize FeS, in the presence of FeO, producing magnetite and H2S. However, once the entire plan- et had (2, 9). At the surface temperature of Io (100 K) sulfur will be in a crystalline state

Basu, Asish R.

464

JOURNAL DE PHYSIQUE Colloque C6, supplement au n 12, Tome 37, Decembre 1976, page C6-249 MOSSBAUER STUDIES OF THE ACTIVATED STATE  

E-Print Network [OSTI]

alumina. In this way the sulfur is removed as H2S. Extensive research on this catalyst system has been. The catalyst is then calcined in air at about 780 K and is activated for instance by exposure to a H2/H2S gas. The measurements indicate that the catalytic process is associated with a valence change of the Co ions. 1

Boyer, Edmond

465

HYDROGEN SULFIDE KINETICS ON PEM FUEL CELL ELECTRODES V. A. Sethuramana  

E-Print Network [OSTI]

HYDROGEN SULFIDE KINETICS ON PEM FUEL CELL ELECTRODES V. A. Sethuramana , L. A. Wiseb , S for the poisoning kinetics of hydrogen sulfide (H2S) on composite solid polymer electrolyte Pt (SPE-Pt) electrode) fuel cells, there is much less in the literature on H2S poisoning. Uribe et al showed

Sethuraman, Vijay A.

466

Generation of DNA-Damaging Reactive Oxygen Species via the Autoxidation of Hydrogen Sulfide under Physiologically Relevant  

E-Print Network [OSTI]

Generation of DNA-Damaging Reactive Oxygen Species via the Autoxidation of Hydrogen Sulfide under found that micromolar concentrations of H2S generated single-strand DNA cleavage. Mechanistic studies indicate that this process involved autoxidation of H2S to generate superoxide, hydrogen peroxide, and

Gates, Kent. S.

467

A soil microscale study to reveal the heterogeneity of Hg(II) impact on indigenous bacteria by quantication of adapted phenotypes and  

E-Print Network [OSTI]

toxicants. Heavy metals in soil are known to have a deleterious e¡ect on the num- bers of bacteria; RISA; Indirect enumeration 1. Introduction Bacterial response to heavy metal contamination in soil,2]). Several studies reported an impact of heavy metals at the community level using phenotypic or genetic

Thioulouse, Jean

468

Persisting impact of historical mining activity to metal (Pb, Zn, Cd, Tl, Hg) and metalloid (As, Sb) enrichment in sediments of the Gardon River,  

E-Print Network [OSTI]

) enrichment in sediments of the Gardon River, Southern France Eléonore Resongles a, , Corinne Casiot a , Rémi in sediments was investigated in multi-source context. · Metal(loid) enrichment during the 19th century in sediment. · Cd, Zn and Pb may be mobilized under changing environmental conditions. a b s t r a c ta r t i

Demouchy, Sylvie

469

Expanded Safety and Immunogenicity of a Bivalent, Oral, Attenuated Cholera Vaccine, CVD 103-HgR Plus CVD 111, in United States Military Personnel Stationed in Panama  

Science Journals Connector (OSTI)

...States Military Personnel Stationed in Panama J. R. McGhee David...Southern Command, 4 Panama; Center for Vaccine Development, University...partially-immune American soldiers stationed in Panama received one of the following five formulations...

David N. Taylor; José L. Sanchez; José M. Castro; Carlos Lebron; Carlos M. Parrado; David E. Johnson; Carol O. Tacket; Genevieve A. Losonsky; Steven S. Wasserman; Myron M. Levine; Stanley J. Cryz

1999-04-01T23:59:59.000Z

470

Prfungsberatungslisten fr die Fakultt V zum SS 2010 Prfungsberatung gem 15 und 30 BerlHG und 13 a der Ordnung der TU Berlin ber  

E-Print Network [OSTI]

. Wiedemann CAR-B 1 314-23353 314-22014 Montagetechnik und Fabrikbetrieb 314-23099 Fluidsystemdynamik

Berlin,Technische Universität

471

Oyster Saccostrea cucullata as a Biomonitor for Hg Contamination and the Risk to Humans on the Coast of Qeshm Island, Persian Gulf, Iran  

Science Journals Connector (OSTI)

A total of 174 individuals of rocky oysters (Saccostrea cucullata...) and 35 surface sediment samples were collected from seven stations off the intertidal zones of Qeshm Island, Persian Gulf, in order to study t...

Golshan Shirneshan; Alireza Riyahi Bakhtiari…

2012-06-01T23:59:59.000Z

472

Hoffman, H.G. (1998). Physically touching virtual objects using tactile augmentation enhances the realism of virtual environments. Proceedings of the  

E-Print Network [OSTI]

" condition would rate the teapot, walls, and countertop as more solid, and rate the teapot heavier, and more

Washington at Seattle, University of

473

1706 IEEE TRANSACTIONS ON NUCLEAR SCIENCE, VOL. 53, NO. 3, JUNE 2006 Spectroscopic Performance of Thick HgI2 Detectors  

E-Print Network [OSTI]

car- rier mobility and severe material non-uniformity issues. These greatly limit the energy-dependent variation in photopeak ampli- tude. Main results presented are: (1) energy resolutions of 0.85 1.3% have under different anode pixels were observed. Significant non-uniformity in internal electric field

He, Zhong

474

Mechanism of Cation Exchange Process for Epitaxy of Superconducting HgBa2CaCu2O6 Films and Passive Microwave Devices  

E-Print Network [OSTI]

cations into, the lattice of epitaxial Tl2Ba2CaCu2O8 (Tl-2212) or TlBa2CaCu2O7 (Tl-1212) precursor films. Aiming at the remained issues in understanding the mechanism of the cation exchange (CE) process, this thesis work has studied the reversibility of CE...

Zhao, Hua

2007-12-17T23:59:59.000Z

475

Why Sequence Sulfur-Oxidizing Bacteria?  

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

Sulfur-Oxidizing Bacteria? Sulfur-Oxidizing Bacteria? Several environmental problems, such as acid rain, biocorrosion, etc., are caused by sulfur compounds, such as sulfur dioxide (SO2) and hydrogen sulfide (H2S). A sustainable process to remove these sulfur compounds is the production of elemental sulfur from H2S-containing gas streams by the use of sulfide-oxidizing bacteria. In this process, H2S is absorbed into the alkaline solution in the scrubber unit, followed by the biological oxidation of H2S to elemental sulfur and the recycling of water. With this two-step process, a variety of gas streams (i.e., natural gas, synthesis gas, biogas, and refinery gas) can be treated. For the treatment of sulfate-containing waste streams, an extra step has to be introduced: the transformation of sulfate into H2S by sulfate-reducing bacteria. In

476

Epstein-Barr Virus Glycoprotein gB and gHgL Can Mediate Fusion and Entry in trans, and Heat Can Act as a Partial Surrogate for gHgL and Trigger a Conformational Change in gB  

Science Journals Connector (OSTI)

...It is suggested that the Gibbs free energy released as a result of the high-affinity...integrin contributes to the activation energy required to cause the refolding of gB...integrin. Heat, as a source of free energy, can act as a surrogate trigger of transitions...

Liudmila S. Chesnokova; Munish K. Ahuja; Lindsey M. Hutt-Fletcher

2014-08-20T23:59:59.000Z

477

Epstein-Barr Virus Glycoprotein gB and gHgL Can Mediate Fusion and Entry in trans, and Heat Can Act as a Partial Surrogate for gHgL and Trigger a Conformational Change in gB  

Science Journals Connector (OSTI)

...Heat, as a source of free energy, can act as a surrogate trigger...possibly aided by the Gibbs free energy that would be released by high-affinity...expressing neomycin resistance and green fluorescence protein (GFP...considered whether the Gibbs free energy released by such a high-affinity...

Liudmila S. Chesnokova; Munish K. Ahuja; Lindsey M. Hutt-Fletcher

2014-08-20T23:59:59.000Z

478

Bol. Mus. Para. Emlio Goeldi. Cincias Humanas, Belm, v. 3, n. 2, p. 195-211, maio-ago. 2008 A cidade, um foco de diversidade agrcola no Rio Negro (Amazonas, Brasil)?  

E-Print Network [OSTI]

A cidade, um foco de diversidade agrícola no Rio Negro (Amazonas, Brasil)? The urban area, a center pour le Développement. Unité de Recherche 200, Brasília, Brasil (laura.emperaire@uol.com.br). II;A cidade, um foco de diversidade agrícola no Rio Negro (Amazonas, Brasil)? 196 INTRODU��O O

Paris-Sud XI, Université de

479

Phase I Clinical and Pharmacokinetic Study of PK1 [N-(2-Hydroxypropyl)methacrylamide Copolymer Doxorubicin]: First Member of a New Class of Chemotherapeutic Agents—Drug-Polymer Conjugates  

Science Journals Connector (OSTI)

...Kaye Rosemary Morrison Chris Twelves Peter Wilson Ruth Duncan Alison H. Thomson Lilian S. Murray Tom E. Hilditch Tom Murray Sally...overview of the past, present and the future Langer R. S. Wise D. L. eds. . Medical Applications of Controlled Release...

Paul A. Vasey; Stan B. Kaye; Rosemary Morrison; Chris Twelves; Peter Wilson; Ruth Duncan; Alison H. Thomson; Lilian S. Murray; Tom E. Hilditch; Tom Murray; Sally Burtles; D. Fraier; E. Frigerio; and Jim Cassidy

1999-01-01T23:59:59.000Z

480

A three-dimensional open-framework zinc arsenate, (C4H12N2)2[Zn7(AsO4)6­(H2O)2  

Science Journals Connector (OSTI)

The title compound is a new open-framework zinc arsenate, which is isostructural with the zinc phosphate UiO-17. The open three-dimensional anionic framework, made up of vertex-sharing AsO4 tetrahedra, ZnO4 tetrahedra and ZnO5 trigonal bipyramids, contains a two-dimensional eight-ring channel system in which diprotonated piperazinium cations reside.

Kongshaug, K.O.

2000-11-15T23:59:59.000Z

Note: This page contains sample records for the topic "n2 h2s hg" 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

MeasureMents of the Differential Cross seCtion for the elastiC n3h anD n2h sCattering at 14.1 MeV LLE Review, Volume 128 151  

E-Print Network [OSTI]

reproduced the Shirato and Debertin data in this CM angular range. Additionally, Hale et al.9 conducted an R for the isobaric analogue p­3He reac- tion. In these experiments, carried out on the OMEGA laser,17 deuterium­tritium-gas­filled, thin-glass capsules were used. Each capsule, made of SiO2, had a diameter of about 850 nm, a gas

482

Gas-Phase Stability and Structure of the Cluster Ions CF3+(CO)n, CF3+(N2)n, CF3+(CF4)n, and CF4H+(CF4)n  

Science Journals Connector (OSTI)

The gas-phase reactions of CF+, CF2+, and CF3+ with the halocarbons CF3Cl, CF3Br, CF3I, CF4, and C2F6 have been studied using a variable-temp.-selected ... Curvature was obsd. in the pseudo-first-order kinetics plots for the reactions of CF+ with CF4 and C2F6. ... The reactions of CF2+ with CF4 and C2F6 produce CF3+ and C2F5+, resp. ...

Kenzo Hiraoka; Masayuki Nasu; Susumu Fujimaki; Edgar W. Ignacio; Shinichi Yamabe

1996-03-28T23:59:59.000Z

483

Stress corrosion cracking: New experiments, new insights M I T E N E R G Y I N I T I AT I V E A U T U M N 2 0 1 2  

E-Print Network [OSTI]

A R C H R E P O R T S 4 Harnessing solar energy: Novel approach yields both electricity and heat 7 the Institute. To subscribe, send your address to stauffer@mit.edu. Copyright © 2012 Massachusetts Institute Massachusetts Institute of Technology 77 Massachusetts Avenue, E19-307 Cambridge, MA 02139-4307 617

Yildiz, Bilge

484

(MIRU2005)!W2005 G/7 7n 2hA--Ns$rMxMQ$7$?0"F07?%l%s%8%;%s%5$+$iF@$i$l$k 3 !857Au=$I--  

E-Print Network [OSTI]

$l$F$$$k!%¡BJ*BN%b%G%j%s %0$N5;=Q$O!$3X=Q!$;:6H!$%(%s%?!¡%F%$%s%a%s%H$J$IB?$/$NJ, Ln$GI,MW$H$5$l!$$^$?GH5Z8z2L$,4--BT

Tokyo, University of

485

Infection of the Upper Respiratory Tract with Seasonal Influenza A(H3N2) Virus Induces Protective Immunity in Ferrets against Infection with A(H1N1)pdm09 Virus after Intranasal, but Not Intratracheal, Inoculation  

Science Journals Connector (OSTI)

...Amerongen, GF Rimmelzwaan, J Simon, E de Wit, V Munster, T Bestebroer, RA Fouchier...J. Immunol. 162 :7578-7583. 34. Price, GE , MR Soboleski, CY Lo, JA Misplon...T Meijerhof, L Boon, E Gostick, DA Price, J Wilschut, and A de Haan. 2012. Induction...

Rogier Bodewes; Joost H. C. M. Kreijtz; Geert van Amerongen; Marine L. B. Hillaire; Stella E. Vogelzang-van Trierum; Nella J. Nieuwkoop; Peter van Run; Thijs Kuiken; Ron A. M. Fouchier; Albert D. M. E. Osterhaus; Guus F. Rimmelzwaan

2013-01-30T23:59:59.000Z

486

Characterization of Reverse Genetics-Derived Cold-Adapted Master Donor Virus A/Leningrad/134/17/57 (H2N2) and Reassortants with H5N1 Surface Genes in a Mouse Model  

Science Journals Connector (OSTI)

...meet the surge in demand to mitigate an eventual...VN1203), and A/Egypt/321/2007 (H5N1...weighed and monitored daily until 14 dpi. Statistical...group were monitored daily for clinical signs...VN1203) and Egypt/321/NAMRU-3...and Population, Egypt, for providing valuable...

Irina Isakova-Sivak; Li-Mei Chen; Melissa Bourgeois; Yumiko Matsuoka; J. Theo M. Voeten; Jacco G. M. Heldens; Han van den Bosch; Alexander Klimov; Larisa Rudenko; Nancy J. Cox; Ruben O. Donis

2014-03-19T23:59:59.000Z

487

Extensive regularization of the coupled cluster methods based on the generating functional formalism: application to gas-phase benchmarks and to the S(N)2 reaction of CHCl3 and OH- in water  

SciTech Connect (OSTI)

The recently introduced energy expansion based on the use of generating functional (GF) [K. Kowalski, P.D. Fan, J. Chem. Phys. 130, 084112 (2009)] provides a way of constructing size-consistent non-iterative coupled-cluster (CC) corrections in terms of moments of the CC equations. To take advantage of this expansion in a strongly interacting regime, the regularization of the cluster amplitudes is required in order to counteract the effect of excessive growth of the norm of the CC wavefunction. Although proven to be effcient, the previously discussed form of the regularization does not lead to rigorously size-consistent corrections. In this paper we address the issue of size-consistent regularization of the GF expansion by redefning the equations for the cluster amplitudes. The performance and basic features of proposed methodology is illustrated on several gas-phase benchmark systems. Moreover, the regularized GF approaches are combined with QM/MM module and applied to describe the SN2 reaction of CHCl3 and OH- in aqueous solution.

Kowalski, Karol; Valiev, Marat

2009-12-21T23:59:59.000Z

488

Pochet P., Cusset J.-M. (1999), Cultural barriers to bicycle use in Western African cities: The case of Bamako and Ouagadougou, IATSS Research, Vol. 23, n2, pp. 43-50.  

E-Print Network [OSTI]

1 Pochet P., Cusset J.-M. (1999), Cultural barriers to bicycle use in Western African cities: The case of Bamako and Ouagadougou, IATSS Research, Vol. 23, n°2, pp. 43-50. Cultural barriers to bicycle-michel.cusset@let.ish-lyon.cnrs.fr Abstract This paper deals with the use and perception of bicycles in two Western African capital towns

Paris-Sud XI, Université de

489

Simulating Geologic Co-sequestration of Carbon Dioxide and Hydrogen Sulfide in a Basalt Formation  

SciTech Connect (OSTI)

Co-sequestered CO2 with H2S impurities could affect geologic storage, causing changes in pH and oxidation state that affect mineral dissolution and precipitation reactions and the mobility of metals present in the reservoir rocks. We have developed a variable component, non-isothermal simulator, STOMP-COMP (Water, Multiple Components, Salt and Energy), which simulates multiphase flow gas mixtures in deep saline reservoirs, and the resulting reactions with reservoir minerals. We use this simulator to model the co-injection of CO2 and H2S into brecciated basalt flow top. A 1000 metric ton injection of these supercritical fluids, with 99% CO2 and 1% H2S, is sequestered rapidly by solubility and mineral trapping. CO2 is trapped mainly as calcite within a few decades and H2S is trapped as pyrite within several years.

Bacon, Diana H.; Ramanathan, Ramya; Schaef, Herbert T.; McGrail, B. Peter

2014-01-15T23:59:59.000Z

490

Space Science: Atmospheres Out-Gassing Bodies  

E-Print Network [OSTI]

/ Outgassing H2, H2O, CO2, H2, S, SO2 ... Impacts Comets, meteors, micrometeorite LOSSES Surface Condensation Equilibrium Ocean: dissolves CO2 bicarbonate bicarbonate CO2 release Near Equilibrium Burial --- land + Sea

Johnson, Robert E.

491

crosscutting | netl.doe.gov  

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

Central Florida Graphene-Based Composite Sensors for Energy Applications Charter D. Stinespring, West Virginia University High-Temperature Nano-Derived Micro-H2 and H2S Sensors...

492

Gordon Research Conferences  

Science Journals Connector (OSTI)

...Celia Dominguez / Stephan Schiling / Jeffery Axten / Dario Doller) Increasing the...Photosynthesis (Don Bryant / Eva Nowack / Benjamin Bailleul) PHOTOSYNTHESIS Energy at the...Leslie Poole / Roland Lill / Xian Ming / Benjamin P. Tu) Signaling by NO and H2 S (Thomas...

2014-02-21T23:59:59.000Z

493

Abrasion and Erosion testing of Materials used in Power Production...  

Office of Scientific and Technical Information (OSTI)

and exhaust gas can erode a boiler's heat exchange tubes 4-8 . In coal gasification power plants, the heat exchanger tubes can experience corrosion due to H 2 S and HCl in...

494

E-Print Network 3.0 - allium cepa linn Sample Search Results  

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

Nerato has been used... NS ratio in shoots of different cultivars of Allium cepa, A. fis- tulosum and A. porrum... the impact of short-term H2S exposure and sulfate supply on...

495

E-Print Network 3.0 - allium cepa Sample Search Results  

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

Nerato has been used... NS ratio in shoots of different cultivars of Allium cepa, A. fis- tulosum and A. porrum... the impact of short-term H2S exposure and sulfate supply on...

496

E-Print Network 3.0 - allium cepa root Sample Search Results  

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

Nerato has been used... NS ratio in shoots of different cultivars of Allium cepa, A. fis- tulosum and A. porrum... the impact of short-term H2S exposure and sulfate supply on...

497

E-Print Network 3.0 - allium cepa test Sample Search Results  

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

Nerato has been used... NS ratio in shoots of different cultivars of Allium cepa, A. fis- tulosum and A. porrum... the impact of short-term H2S exposure and sulfate supply on...

498

E-Print Network 3.0 - allium cepa anaphase-telophase Sample Search...  

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

Nerato has been used... NS ratio in shoots of different cultivars of Allium cepa, A. fis- tulosum and A. porrum... the impact of short-term H2S exposure and sulfate supply on...

499

E-Print Network 3.0 - allium cepa liliaceae Sample Search Results  

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

Nerato has been used... NS ratio in shoots of different cultivars of Allium cepa, A. fis- tulosum and A. porrum... the impact of short-term H2S exposure and sulfate supply on...

500

Adsorption of Hydrogen Sulfide onto Activated Carbon Fibers: Effect of  

E-Print Network [OSTI]

. These processes include natural gas processing, petroleum refining, petrochemical plants, Kraft mills, coke ovens, and coal gasifiers. H2S concentrations in these processes vary from 0 to 60 vol % (6). The Claus process

Borguet, Eric