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1

Water-Gas Samples At Lightning Dock Area (Norman, Et Al., 2002) | Open  

Open Energy Info (EERE)

2002) 2002) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Water-Gas Samples At Lightning Dock Area (Norman, Et Al., 2002) Exploration Activity Details Location Lightning Dock Area Exploration Technique Water-Gas Samples Activity Date Usefulness not indicated DOE-funding Unknown Notes The Lightning Dock, Animas Valley, New Mexico geothermal area was discovered when a rancher found boiling water while drilling a shallow stock tank welt (Elston, Deal, et. al, 1983). There are no surface manifestations of present or past geothermal activity in the Animas Valley. Norman and Bernhart (1982) analyzed the gases in the discovery well and 15 stock tank wells nearby (Figure 1). References David Norman, Nigel Blarney, Lynne Kurilovitch (2002) New

2

In Situ Studies of the Active Sites for the Water Gas Shift Reaction over Cu-CeO2 Catalysts: Complex Interaction Between Metallic Copper and Oxygen Vacancies of Ceria  

SciTech Connect (OSTI)

New information about the active sites for the water gas shift (WGS) reaction over Cu-CeO{sub 2} systems was obtained using in-situ, time-resolved X-ray diffraction (TR-XRD), X-ray absorption spectroscopy (TR-XAS, Cu K and Ce L3 edges), and infrared spectroscopy (DRIFTS). Cu-CeO{sub 2} nanoparticles prepared by a novel reversed microemulsion method (doped Ce1-xCuxO2 sample) and an impregnation method (impregnated CuO{sub x}/CeO{sub 2} sample) were studied. The results from all of the samples indicate that both metallic copper and oxygen vacancies in ceria were involved in the generation of active sites for the WGS reaction. Evidence was found for a synergistic Cu-O vacancy interaction. This interaction enhances the chemical activity of Cu, and the presence of Cu facilitates the formation of O vacancies in ceria under reaction conditions. Water dissociation occurred on the O vacancy sites or the Cu-O vacancy interface. No significant amounts of formate were formed on the catalysts during the WGS reaction. The presence of strongly bound carbonates is an important factor for the deactivation of the catalysts at high temperatures. This work identifies for the first time the active sites for the WGS reaction on Cu-CeO{sub 2} catalysts and illustrates the importance of in situ structural studies for heterogeneous catalytic reactions.

Wang,X.; Rodriguez, J.; Hanson, J.; Gamarra, D.; Martinez-Arias, A.; Fernandez-Garcia, M.

2006-01-01T23:59:59.000Z

3

Gas Sampling At Wister Area (DOE GTP) | Open Energy Information  

Open Energy Info (EERE)

Wister Area (DOE GTP) (Redirected from Water-Gas Samples At Wister Area (DOE GTP)) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Gas Sampling...

4

Surface Gas Sampling At Lightning Dock Area (Norman & Moore,...  

Open Energy Info (EERE)

Water-Gas Samples At Lightning Dock Area (Norman & Moore, 2004)) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Surface Gas Sampling At...

5

Unraveling the Active Site in Copper-Ceria Systems for the Water-Gas Shift Reaction: In Situ Characterization of an Inverse Powder CeO2-x/CuO-Cu Catalyst  

SciTech Connect (OSTI)

An inverse powder system composed of CeO{sub 2} nanoparticles dispersed over a CuO-Cu matrix is proposed as a novel catalyst for the water-gas shift reaction. This inverse CeO{sub 2}/CuO-Cu catalyst exhibits a higher activity than standard Cu/CeO{sub 2} catalysts. In situ synchrotron characterization techniques were employed to follow the structural changes of CeO{sub 2}/CuO-Cu under reaction conditions. Time-resolved X-ray diffraction experiments showed the transformation of CuO to metallic Cu via a Cu{sub 2}O intermediate. Short-order structural changes were followed by pair distribution function analysis and corroborated the results obtained by diffraction. Moreover, X-ray absorption spectroscopy also revealed oxidation state changes from Cu{sup 2+} to Cu{sup 0} and the partial reduction of CeO{sub x} nanoparticles. The activity data obtained by mass spectrometry revealed that hydrogen production starts once the copper has been fully reduced. The strong interaction of ceria and copper boosted the catalytic performance of the sample. The inverse catalyst was active at low temperatures, stable to several reaction runs and to redox cycles. These characteristics are highly valuable for mobile fuel cell applications. The active phases of the inverse CeO{sub 2}/CuO-Cu catalyst are partially reduced ceria nanoparticles strongly interacting with metallic copper. The nature and structure of the ceria nanoparticles are of critical importance because they are involved in processes related to water dissociation over the catalyst surface.

Barrio, L.; Estrella, M; Zhou, G; Wen, W; Hanson, J; Hungria, A; Hornes, A; Fernandez-Garcia, M; Martinez-Arias, A; Rodriguez, J

2010-01-01T23:59:59.000Z

6

Unraveling the Active Site in Copper-ceria Systems for the Water Gas Shift Reaction: In-situ Characterization of an Inverse Powder CeO2-x/CuO-Cu Catalyst  

SciTech Connect (OSTI)

An inverse powder system composed of CeO{sub 2} nanoparticles dispersed over a CuO-Cu matrix is proposed as a novel catalyst for the water-gas shift reaction. This inverse CeO{sub 2}/CuO-Cu catalyst exhibits a higher activity than standard Cu/CeO{sub 2} catalysts. In situ synchrotron characterization techniques were employed to follow the structural changes of CeO{sub 2}/CuO-Cu under reaction conditions. Time-resolved X-ray diffraction experiments showed the transformation of CuO to metallic Cu via a Cu{sub 2}O intermediate. Short-order structural changes were followed by pair distribution function analysis and corroborated the results obtained by diffraction. Moreover, X-ray absorption spectroscopy also revealed oxidation state changes from Cu{sup 2+} to Cu{sup 0} and the partial reduction of CeOx nanoparticles. The activity data obtained by mass spectrometry revealed that hydrogen production starts once the copper has been fully reduced. The strong interaction of ceria and copper boosted the catalytic performance of the sample. The inverse catalyst was active at low temperatures, stable to several reaction runs and to redox cycles. These characteristics are highly valuable for mobile fuel cell applications. The active phases of the inverse CeO{sub 2}/CuO-Cu catalyst are partially reduced ceria nanoparticles strongly interacting with metallic copper. The nature and structure of the ceria nanoparticles are of critical importance because they are involved in processes related to water dissociation over the catalyst surface.

Rodriguez, J.A.; Barrio, L.; Estrella, M.; Zhou, G.; Wen, W.; Hanson, J.C.; Hungría, A.B.; Hornés, A.; Fernández-García, M.; Arturo Martínez-Arias, A.

2010-03-04T23:59:59.000Z

7

Albany Water Gas & Light Comm | Open Energy Information  

Open Energy Info (EERE)

Water Gas & Light Comm Water Gas & Light Comm Jump to: navigation, search Name Albany Water Gas & Light Comm Place Georgia Utility Id 230 Utility Location Yes Ownership M NERC Location SERC NERC SERC Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png Commercial Demand Commercial Commercial Non-Demand Commercial Large Commercial Demand Commercial Residential Residential Security Lights 1000 Watt Metal Halide Metal Pole Lighting Security Lights 1000 Watt Metal Halide Wooden Pole Lighting Security Lights 150 HPSV Fixtures Metal Pole Lighting Security Lights 150 HPSV Fixtures Wooden Pole Lighting

8

Gold, Copper, and Platinum Nanoparticles Dispersed on CeOx/TiO2(110) Surfaces: High Water-Gas Shift Activity and the Nature of the Mixed-Metal Oxide at the Nanometer Level  

SciTech Connect (OSTI)

At small coverages of ceria on TiO{sub 2}(110), the CeO{sub x} nanoparticles have an unusual coordination mode. Scanning tunneling microscopy and density-functional calculations point to the presence of Ce{sub 2}O{sub 3} dimers, which form diagonal arrays that have specific orientations of 0, 24, and 42{sup o} with respect to the [1 -1 0] direction of the titania substrate. At high coverages of ceria on TiO{sub 2}(110), the surface exhibits two types of terraces. In one type, the morphology is not very different from that observed at low ceria coverage. However, in the second type of terrace, there is a compact array of ceria particles with structures that do not match the structures of CeO{sub 2}(111) or CeO{sub 2}(110). The titania substrate imposes on the ceria nanoparticles nontypical coordination modes, enhancing their chemical reactivity. This phenomenon leads to a larger dispersion of supported metal nanoparticles (M = Au, Cu, Pt) and makes possible the direct participation of the oxide in catalytic reactions. The M/CeO{sub x}/TiO{sub 2}(110) surfaces display an extremely high catalytic activity for the water-gas shift reaction that follows the sequence Au/CeO{sub x}/TiO{sub 2}(110) < Cu/CeO{sub x}/TiO{sub 2}(110) < Pt/CeO{sub x}/TiO{sub 2}(110). For low coverages of Cu and CeO{sub x}, Cu/CeO{sub x}/TiO{sub 2}(110) is 8-12 times more active than Cu(111) or Cu/ZnO industrial catalysts. In the M/CeO{sub x}/TiO{sub 2}(110) systems, there is a strong coupling of the chemical properties of the admetal and the mixed-metal oxide: The adsorption and dissociation of water probably take place on the oxide, CO adsorbs on the admetal nanoparticles, and all subsequent reaction steps occur at the oxide-admetal interface. The high catalytic activity of the M/CeO{sub x}/TiO{sub 2}(110) surfaces reflects the unique properties of the mixed-metal oxide at the nanometer level.

Park, J.; Graciani, J; Evans, J; Stacchiola, D; Senanayake, S; Barrio, L; Liu, P; Fdez. Sanz, J; Hrbek, J; Rodriguez, J

2010-01-01T23:59:59.000Z

9

Gold, Copper and Platinum Nanoparticles Dispersed on CeOx/TiO2(110) Surfaces: High Water-Gas Shift Activity and the Nature of the Mixed-Metal Oxide at the Nanometer Level  

SciTech Connect (OSTI)

At small coverages of ceria on TiO{sub 2}(110), the CeO{sub x} nanoparticles have an unusual coordination mode. Scanning tunneling microscopy and density-functional calculations point to the presence of Ce{sub 2}O{sub 3} dimers, which form diagonal arrays that have specific orientations of 0, 24, and 42{sup o} with respect to the [1 -1 0] direction of the titania substrate. At high coverages of ceria on TiO{sub 2}(110), the surface exhibits two types of terraces. In one type, the morphology is not very different from that observed at low ceria coverage. However, in the second type of terrace, there is a compact array of ceria particles with structures that do not match the structures of CeO{sub 2}(111) or CeO{sub 2}(110). The titania substrate imposes on the ceria nanoparticles nontypical coordination modes, enhancing their chemical reactivity. This phenomenon leads to a larger dispersion of supported metal nanoparticles (M = Au, Cu, Pt) and makes possible the direct participation of the oxide in catalytic reactions. The M/CeO{sub x}/TiO{sub 2}(110) surfaces display an extremely high catalytic activity for the water-gas shift reaction that follows the sequence Au/CeO{sub x}/TiO{sub 2}(110) < Cu/CeO{sub x}/TiO{sub 2}(110) < Pt/CeO{sub x}/TiO{sub 2}(110). For low coverages of Cu and CeO{sub x}, Cu/CeO{sub x}/TiO{sub 2}(110) is 8-12 times more active than Cu(111) or Cu/ZnO industrial catalysts. In the M/CeO{sub x}/TiO{sub 2}(110) systems, there is a strong coupling of the chemical properties of the admetal and the mixed-metal oxide: The adsorption and dissociation of water probably take place on the oxide, CO adsorbs on the admetal nanoparticles, and all subsequent reaction steps occur at the oxide-admetal interface. The high catalytic activity of the M/CeO{sub x}/TiO{sub 2}(110) surfaces reflects the unique properties of the mixed-metal oxide at the nanometer level.

Rodriguez, J.A.; Park, J.B.; Graciani, J.; Evans, J.; Stacchiola, D.; Senanayake, S.D.; Barrio, L.; Liu, P.; Sanz, J.F.; Hrbek, J.

2010-01-13T23:59:59.000Z

10

Development of Novel Water-Gas-Shift Membrane Reactor  

E-Print Network [OSTI]

Development of Novel Water- Gas-Shift Membrane Reactor Addressing Barrier L: H2 Purification-22, 2003 #12;Water-Gas-Shift Membrane Reactor · Relevance/Objectives - Produce Enhanced H2 Product with ppm CO at High Pressure Used for Reforming - Overcome Barrier L: H2 Purification/CO Clean-up - Achieve

11

Advanced Water-Gas Shift Membrane Reactor  

SciTech Connect (OSTI)

The overall objectives for this project were: (1) to identify a suitable PdCu tri-metallic alloy membrane with high stability and commercially relevant hydrogen permeation in the presence of trace amounts of carbon monoxide and sulfur; and (2) to identify and synthesize a water gas shift catalyst with a high operating life that is sulfur and chlorine tolerant at low concentrations of these impurities. This work successfully achieved the first project objective to identify a suitable PdCu tri-metallic alloy membrane composition, Pd{sub 0.47}Cu{sub 0.52}G5{sub 0.01}, that was selected based on atomistic and thermodynamic modeling alone. The second objective was partially successful in that catalysts were identified and evaluated that can withstand sulfur in high concentrations and at high pressures, but a long operating life was not achieved at the end of the project. From the limited durability testing it appears that the best catalyst, Pt-Re/Ce{sub 0.333}Zr{sub 0.333}E4{sub 0.333}O{sub 2}, is unable to maintain a long operating life at space velocities of 200,000 h{sup -1}. The reasons for the low durability do not appear to be related to the high concentrations of H{sub 2}S, but rather due to the high operating pressure and the influence the pressure has on the WGS reaction at this space velocity.

Sean Emerson; Thomas Vanderspurt; Susanne Opalka; Rakesh Radhakrishnan; Rhonda Willigan

2009-01-07T23:59:59.000Z

12

WATER-GAS SHIFT WITH INTEGRATED HYDROGEN SEPARATION PROCESS  

SciTech Connect (OSTI)

This project involved fundamental research and development of novel cerium oxide-based catalysts for the water-gas-shift reaction and the integration of these catalysts with Pd-alloy H{sub 2} -separation membranes supplying high purity hydrogen for fuel cell use. Conditions matching the requirements of coal gasifier-exit gas streams were examined in the project. Cu-cerium oxide was identified as the most promising high-temperature water-gas shift catalyst for integration with H{sub 2}-selective membranes. Formulations containing iron oxide were found to deactivate in the presence of CO{sub 2}. Cu-containing ceria catalysts, on the other hand, showed high stability in CO{sub 2}-rich gases. This type gas will be present over much of the catalyst, as the membrane removes the hydrogen produced from the shift reaction. The high-temperature shift catalyst composition was optimized by proper selection of dopant type and amount in ceria. The formulation 10at%Cu-Ce(30at%La)O{sub x} showed the best performance, and was selected for further kinetic studies. WGS reaction rates were measured in a simulated coal-gas mixture. The apparent activation energy, measured over aged catalysts, was equal to 70.2 kJ/mol. Reaction orders in CO, H{sub 2}O, CO{sub 2} and H{sub 2} were found to be 0.8, 0.2, -0.3, and -0.3, respectively. This shows that H{sub 2}O has very little effect on the reaction rate, and that both CO{sub 2} and H{sub 2} weakly inhibit the reaction. Good stability of catalyst performance was found in 40-hr long tests. A flat (38 cm{sup 2}) Pd-Cu alloy membrane reactor was used with the catalyst washcoated on oxidized aluminum screens close coupled with the membrane. To achieve higher loadings, catalyst granules were layered on the membrane itself to test the combined HTS activity/ H{sub 2} -separation efficiency of the composite. Simulated coal gas mixtures were used and the effect of membrane on the conversion of CO over the catalyst was evidenced at high space velocities. Equilibrium CO conversion at 400 C was measured at a space velocity of 30,000 h{sup -1} with the 10{micro}m- thick Pd{sub 60}Cu{sub 40} membrane operating under a pressure differential of 100 psi. No carbon deposition took place during operation. The performance of the coupled Cu-ceria catalyst/membrane system at 400 C was stable in {approx} 30 h of continuous operation. The overall conclusion from this project is that Cu-doped ceria catalysts are suitable for use in high-temperature water-gas shift membrane reactors. CO{sub 2}-rich operation does not affect the catalyst activity or stability; neither does it affect hydrogen permeation through the Pd-Cu membrane. Operation in the temperature range of 400-430 C is recommended.

Maria Flytzani-Stephanopoulos; Xiaomei Qi; Scott Kronewitter

2004-02-01T23:59:59.000Z

13

Biological Water Gas Shift DOE Hydrogen, Fuel Cell, and Infrastructure  

E-Print Network [OSTI]

Biological Water Gas Shift DOE Hydrogen, Fuel Cell, and Infrastructure Technologies Program Review was produced from water in a linked cyanobacterial- hydrogenase hybrid system Isolated mutants and cloned 2

14

Structure Sensitivity of the Low-temperature Water-gas Shift Reaction on Cu–CeO2 catalysts  

SciTech Connect (OSTI)

We have investigated the structure sensitivity of the water-gas shift (WGS) reaction on Cu-CeO{sub 2} catalysts prepared at the nanoscale by different techniques. On the surface of ceria, different CuO{sub x} structures exist. We show here that only the strongly bound Cu-[O{sub x}]-Ce species, probably associated with the surface oxygen vacancies of ceria, are active for catalyzing the low-temperature WGS reaction. Weakly bound CuO{sub x} clusters and CuO nanoparticles are spectator species in the reaction. Isolated Cu{sup 2+} ions doping the ceria surface are not active themselves, but they are important in that they create oxygen vacancies and can be used as a reservoir of copper to replenish surface Cu removed by leaching or sintering. Accordingly, synthesis techniques such as coprecipitation that allow for extensive solubility of Cu in ceria should be preferred over impregnation, deposition-precipitation, ion exchange or another two-step method whereby the copper precursor is added to already made ceria nanocrystals. For the synthesis of different structures, we have used two methods: a homogeneous coprecipitation (CP), involving hexamethylenetetramine as the precipitating agent and the pH buffer; and a deposition-precipitation (DP) technique. In the latter case, the ceria supports were first synthesized at the nanoscale with different shapes (rods, cubes) to investigate any potential shape effect on the reaction. Cu-CeO{sub 2} catalysts with different copper contents up to ca. 20 at.% were prepared. An indirect shape effect of CeO{sub 2}, manifested by the propensity to form oxygen vacancies and strongly bind copper in the active form, was established; i.e. the water-gas shift reaction is not structure-sensitive. The apparent activation energy of the reaction on all samples was similar, 50 {+-} 10 kJ/mol, in a product-free (2% CO-10% H{sub 2}O) gas mixture.

Si, R.; Zhang, L.; Raitano, J.; Yi, N.; Chan, S.-W.; Flytzani-Stephanopoulos, M.

2012-01-17T23:59:59.000Z

15

Carbon dioxide hydrogenation to form methanol via a reverse-water-gas-shift reaction (the CAMERE process)  

SciTech Connect (OSTI)

The CAMERE process (carbon dioxide hydrogenation to form methanol via a reverse-water-gas-shift reaction) was developed and evaluated. The reverse-water-gas-shift reactor and the methanol synthesis reactor were serially aligned to form methanol from CO{sub 2} hydrogenation. Carbon dioxide was converted to CO and water by the reverse-water-gas-shift reaction (RWReaction) to remove water before methanol was synthesized. With the elimination of water by RWReaction, the purge gas volume was minimized as the recycle gas volume decreased. Because of the minimum purge gas loss by the pretreatment of RWReactor, the overall methanol yield increased up to 89% from 69%. An active and stable catalyst with the composition of Cu/ZnO/ZrO{sub 2}/Ga{sub 2}O{sub 3} (5:3:1:1) was developed. The system was optimized and compared with the commercial methanol synthesis processes from natural gas and coal.

Joo, O.S.; Jung, K.D.; Han, S.H.; Uhm, S.J. [Korea Inst. of Science and Technology, Seoul (Korea, Republic of). Catalysis Lab.] [Korea Inst. of Science and Technology, Seoul (Korea, Republic of). Catalysis Lab.; Moon, I. [Yonsei Univ., Seoul (Korea, Republic of). Dept. of Chemical Engineering] [Yonsei Univ., Seoul (Korea, Republic of). Dept. of Chemical Engineering; Rozovskii, A.Y.; Lin, G.I. [A.V. Topchiev Inst. of Petrochemical Synthesis, Moscow (Russian Federation)] [A.V. Topchiev Inst. of Petrochemical Synthesis, Moscow (Russian Federation)

1999-05-01T23:59:59.000Z

16

PdZnAl Catalysts for the Reactions of Water-Gas-Shift, Methanol Steam Reforming, and Reverse-Water-Gas-Shift  

SciTech Connect (OSTI)

Pd/ZnO/Al2O3 catalysts were studied for water-gas-shift (WGS), methanol steam reforming, and reverse-water-gas-shift (RWGS) reactions. WGS activity was found to be dependent on the Pd:Zn ratio with a maximum activity obtained at approximately 0.50, which was comparable to that of a commercial Pt-based catalyst. The catalyst stability was demonstrated for 100 hours time-on-stream at a temperature of 3600C without evidence of metal sintering. WGS reaction rates were approximately 1st order with respect to CO concentration, and kinetic parameters were determined to be Ea = 58.3 kJ mol-1 and k0 = 6.1x107 min-1. During methanol steam reforming, the CO selectivities were observed to be lower than the calculated equilibrium values over a range of temperatures and steam/carbon ratios studied while the reaction rate constants were approximately of the same magnitude for both WGS and methanol steam reforming. These results indicate that although Pd/ZnO/Al2O3 are active WGS catalysts, WGS is not involved in methanol steam reforming. RWGS rate constants are on the order of about 20 times lower than that of methanol steam reforming, suggesting that RWGS reaction could be one of the sources for small amount of CO formation in methanol steam reforming.

Dagle, Robert A.; Platon, Alexandru; Datye, Abhaya K.; Vohs, John M.; Wang, Yong; Palo, Daniel R.

2008-03-07T23:59:59.000Z

17

WATER-GAS SHIFT KINETICS OVER IRON OXIDE CATALYSTS AT MEMBRANE REACTOR CONDITIONS  

SciTech Connect (OSTI)

This report covers the second year of a project investigating water-gas shift catalysts for use in membrane reactors. It has been established that a simple iron high temperature shift catalyst becomes ineffective in a membrane reactor because the reaction rate is severely inhibited by the build-up of the product CO{sub 2}. During the past year, an improved microkinetic model for water-gas shift over iron oxide was developed. Its principal advantage over prior models is that it displays the correct asymptotic behavior at all temperatures and pressures as the composition approaches equilibrium. This model has been used to explore whether it might be possible to improve the performance of iron high temperature shift catalysts under conditions of high CO{sub 2} partial pressure. The model predicts that weakening the surface oxygen bond strength by less than 5% should lead to higher catalytic activity as well as resistance to rate inhibition at higher CO{sub 2} partial pressures. Two promoted iron high temperature shift catalysts were studied. Ceria and copper were each studied as promoters since there were indications in the literature that they might weaken the surface oxygen bond strength. Ceria was found to be ineffective as a promoter, but preliminary results with copper promoted FeCr high temperature shift catalyst show it to be much more resistant to rate inhibition by high levels of CO{sub 2}. Finally, the performance of sulfided CoMo/Al{sub 2}O{sub 3} catalysts under conditions of high CO{sub 2} partial pressure was simulated using an available microkinetic model for water-gas shift over this catalyst. The model suggests that this catalyst might be quite effective in a medium temperature water-gas shift membrane reactor, provided that the membrane was resistant to the H{sub 2}S that is required in the feed.

Carl R.F. Lund

2001-08-10T23:59:59.000Z

18

Analysis of a duo-selecting membrane reactor for the water-gas shift  

E-Print Network [OSTI]

The water-gas shift reaction is an exothermic and reversible catalytic process that converts carbon monoxide and water (steam) to hydrogen and carbon dioxide. In regard to energy-related issues, the water-gas shift is part ...

Hardy, AliciA Jillian Jackson, 1978-

2004-01-01T23:59:59.000Z

19

WATER-GAS SHIFT KINETICS OVER IRON OXIDE CATALYSTS AT MEMBRANE REACTOR CONDITIONS  

SciTech Connect (OSTI)

The kinetics of water-gas shift were studied over ferrochrome catalysts under conditions with high carbon dioxide partial pressures, such as would be expected in a membrane reactor. The catalyst activity is inhibited by increasing carbon dioxide partial pressure. A microkinetic model of the reaction kinetics was developed. The model indicated that catalyst performance could be improved by decreasing the strength of surface oxygen bonds. Literature data indicated that adding either ceria or copper to the catalyst as a promoter might impart this desired effect. Ceria-promoted ferrochrome catalysts did not perform any better than unpromoted catalyst at the conditions tested, but copper-promoted ferrochrome catalysts did offer an improvement over the base ferrochrome material. A different class of water-gas shift catalyst, sulfided CoMo/Al{sub 2}O{sub 3} is not affected by carbon dioxide and may be a good alternative to the ferrochrome system, provided other constraints, notably the requisite sulfur level and maximum temperature, are not too limiting. A model was developed for an adiabatic, high-temperature water-gas shift membrane reactor. Simulation results indicate that an excess of steam in the feed (three moles of water per mole of CO) is beneficial even in a membrane reactor as it reduces the rate of adiabatic temperature rise. The simulations also indicate that much greater improvement can be attained by improving the catalyst as opposed to improving the membrane. Further, eliminating the inhibition by carbon dioxide will have a greater impact than will increasing the catalyst activity (assuming inhibition is still operative). Follow-up research into the use of sulfide catalysts with continued kinetic and reactor modeling is suggested.

Carl R.F. Lund

2002-08-02T23:59:59.000Z

20

Cu–ZnO and Cu–ZnO/Al2O3 Catalysts for the Reverse Water-Gas Shift Reaction. The Effect of the Cu/Zn Ratio on Precursor Characteristics and on the Activity of the Derived Catalysts  

Science Journals Connector (OSTI)

Comparison is made between Cu–ZnO and alumina-supported Cu–ZnO as catalysts for the reverse water-gas shift (RWGS) reaction. For both types of catalyst the Cu/Zn ratio has been varied between Cu-rich and Zn-ri...

Frank S. Stone; David Waller

2003-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "activity water-gas samples" 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

Redox cycle stability of mixed oxides used for hydrogen generation in the cyclic water gas shift process  

SciTech Connect (OSTI)

Graphical abstract: - Highlights: • Fe{sub 2}O{sub 3} modified with CaO, SiO{sub 2} and Al{sub 2}O{sub 3} was studied in cyclic water gas shift reactor. • For the first time stability of such oxides were tested for 100 redox cycles. • Optimally added oxides significantly improved the activity and the stability of Fe{sub 2}O{sub 3}. • Increased stability was attributed to the impediment of neck formation. - Abstract: Repeated cycles of the reduction of Fe{sub 3}O{sub 4} with reductive gas, e.g. hydrogen and subsequent oxidation of the reduced iron material with water vapor can be harnessed as a process for the production of pure hydrogen. The redox behavior of iron oxide modified with various amounts of SiO{sub 2}, CaO and Al{sub 2}O{sub 3} was investigated in the present study. The total amount of the additional metal oxides was always below 15 wt%. The samples were prepared by co-precipitation using urea hydrolysis method. The influence of various metal oxides on the hydrogen production capacity and the material stability was studied in detail in terms of temperature-programmed reduction (TPR), X-ray diffraction (XRD), scanning electron microscopy (SEM) and BET analysis. Furthermore, the activity and the stability of the samples were tested in repeated reduction with diluted H{sub 2} and re-oxidation cycles with H{sub 2}O. The results indicate that combination of several oxides as promoter increases the stability of the iron oxide material by mitigating the sintering process. The positive influence of the oxides in stabilizing the iron oxide material is attributed to the impediment of neck formation responsible for sintering.

Datta, Pradyot, E-mail: pradyot.datta@gmail.com

2013-10-15T23:59:59.000Z

22

E-Print Network 3.0 - antioxidant enzymes activity Sample Search...  

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

activity Search Powered by Explorit Topic List Advanced Search Sample search results for: antioxidant enzymes activity...

23

E-Print Network 3.0 - antioxidant enzymes activities Sample Search...  

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

activities Search Powered by Explorit Topic List Advanced Search Sample search results for: antioxidant enzymes activities...

24

Comparison of Palladium and Platinum Water Gas Shift Kinetics Using Density Functional Theory Models.  

E-Print Network [OSTI]

??The Water Gas Shift (WGS) reaction can be either thermodynamically or kinetically limited, depending on process conditions. Improved catalysts are of particular interest at low… (more)

Clay, John

2014-01-01T23:59:59.000Z

25

Comparison of palladium and platinum Water Gas Shift reaction kinetics using density functional theory models.  

E-Print Network [OSTI]

?? The Water Gas Shift (WGS) reaction can be either thermodynamically or kinetically limited, depending on process conditions. Improved catalysts are of particular interest at… (more)

Clay, John P.

2014-01-01T23:59:59.000Z

26

Slurry phase Fischer-Tropsch synthesis: Cobalt plus a water-gas shift catalyst  

SciTech Connect (OSTI)

This report details experiments performed on three different copper-based catalysts: Cu/Cr[sub 2]O[sub 3], Cu/MnO/Cr[sub 2]O[sub 3] and Cu/ZnO/Al[sub 2]O[sub 3]. Of these three catalysts, the Cu/ZnO/Al[sub 2]O[sub 3] exhibits the greatest stability when slurried in octacosane. More than 1000 hours-on-stream indicate that the catalyst activity is not detrimentally affected by high pressure, high H[sub 2]/CO ratio, or the presence of alkenes. All of these are necessary stability characteristics for the water-gas shift catalyst, if it is to be used in combination with a cobalt Fischer-Tropsch catalyst. A review of documented reduction procedures for cobalt-based Fischer-Tropsch catalysts is presented.

Yates, I.C.; Satterfield, C.N.

1988-01-01T23:59:59.000Z

27

Improved mesh based photon sampling techniques for neutron activation analysis  

SciTech Connect (OSTI)

The design of fusion power systems requires analysis of neutron activation of large, complex volumes, and the resulting particles emitted from these volumes. Structured mesh-based discretization of these problems allows for improved modeling in these activation analysis problems. Finer discretization of these problems results in large computational costs, which drives the investigation of more efficient methods. Within an ad hoc subroutine of the Monte Carlo transport code MCNP, we implement sampling of voxels and photon energies for volumetric sources using the alias method. The alias method enables efficient sampling of a discrete probability distribution, and operates in 0(1) time, whereas the simpler direct discrete method requires 0(log(n)) time. By using the alias method, voxel sampling becomes a viable alternative to sampling space with the 0(1) approach of uniformly sampling the problem volume. Additionally, with voxel sampling it is straightforward to introduce biasing of volumetric sources, and we implement this biasing of voxels as an additional variance reduction technique that can be applied. We verify our implementation and compare the alias method, with and without biasing, to direct discrete sampling of voxels, and to uniform sampling. We study the behavior of source biasing in a second set of tests and find trends between improvements and source shape, material, and material density. Overall, however, the magnitude of improvements from source biasing appears to be limited. Future work will benefit from the implementation of efficient voxel sampling - particularly with conformal unstructured meshes where the uniform sampling approach cannot be applied. (authors)

Relson, E.; Wilson, P. P. H.; Biondo, E. D. [University of Wisconsin-Madison, 1500 Engineering Drive, Madison, WI 53706 (United States)

2013-07-01T23:59:59.000Z

28

WATER-GAS SHIFT WITH INTEGRATED HYDROGEN SEPARATION PROCESS  

SciTech Connect (OSTI)

Optimization of the water-gas shift (WGS) reaction system for hydrogen production for fuel cells is of particular interest to the energy industry. To this end, it is desirable to couple the WGS reaction to hydrogen separation using a semi-permeable membrane, with both processes carried out at high temperatures to improve reaction kinetics and permeation. Reduced equilibrium conversion of the WGS reaction at high temperatures is overcome by product H{sub 2} removal via the membrane. This project involves fundamental research and development of novel cerium oxide-based catalysts for the water-gas-shift reaction and the integration of these catalysts with Pd-alloy H{sub 2}-separation membranes supplying high purity hydrogen for fuel cell use. Conditions matching the requirements of coal gasifier-exit gas streams will be examined in the project. The first-year screening studies of WGS catalysts identified Cu-ceria as the most promising high-temperature shift catalyst for integration with H{sub 2}-selective membranes. Formulations containing iron oxide were found to deactivate in the presence of CO{sub 2}, and were thus eliminated from further consideration. Cu-containing ceria catalysts, on the other hand, showed high stability in CO{sub 2}-rich gases. This type gas will be present over much of the catalyst, as the membrane removes the hydrogen produced from the shift reaction. Several catalyst formulations were prepared, characterized and tested in the first year of study. Details from the catalyst development and testing work were given in our first annual technical report. Hydrogen permeation through Pd and Pd-alloy foils was investigated in a small membrane reactor constructed during the first year of the project. The effect of temperature on the hydrogen flux through pure Pd, Pd{sub 60}Cu{sub 40} and Pd{sub 75}Ag{sub 25} alloy membranes, each 25 {micro}m thick, was evaluated in the temperature range from 250 C to 500 C at upstream pressure of 4.4 atm and permeate hydrogen pressure of 1 atm. Flux decay was observed for the Pd-Cu membrane above 500 C. From 350-450 C, an average hydrogen flux value of 0.2 mol H{sub 2}/m{sup 2}/s was measured over this Pd-alloy membrane. These results are in good agreement with literature data. In this year's report, we discuss reaction rate measurements, optimization of catalyst kinetics by proper choice of dopant oxide (lanthana) in ceria, long-term stability studies, and H{sub 2} permeation data collected with unsupported flat, 10 {micro}m-thick Pd-Cu membranes over a wide temperature window and in various gas mixtures. The high-temperature shift catalyst composition was further improved, by proper selection of dopant type and amount. The formulation 10 at%Cu-Ce(30 at%La)Ox was the best; this was selected for further kinetic studies. WGS reaction rates were measured in a simulated coal-gas mixture. The stability of catalyst performance was examined in 40-hr long tests. A series of hydrogen permeation tests were conducted in a small flat-membrane reactor using the 10 m{micro}-thick Pd-Cu membranes. Small inhibitory effects of CO and CO{sub 2} were found at temperatures above 350 C, while H{sub 2}O vapor had no effect on hydrogen permeation. No carbon deposition took place during many hours of membrane operation. The reaction extent on the blank (catalyst-free) membrane was also negligible. A larger flat-membrane reactor will be used next year with the catalyst wash coated on screens close coupled with the Pd-Cu membrane.

Maria Flytzani-Stephanopoulos, PI; Jerry Meldon, Co-PI; Xiaomei Qi

2002-12-01T23:59:59.000Z

29

A mini review on the chemistry and catalysis of the water gas shift reaction  

E-Print Network [OSTI]

Water gas shift (WGS) reaction is a chemical reaction in which carbon monoxide reacts with water vapor to form carbon dioxide and hydrogen. It is an important reaction industrially used in conjunction with steam reforming of hydrocarbons for the production of high purity hydrogen. Grenoble et al examined the roles of both active metals and metal oxide support on the kinetics of the WGS reaction. They found out that the turn over numbers of various Al2O3 supported transition metals decreased in the trend of Cu, Re, Co, Ru, Ni, Pt, Os, Au, Fe, Pd, Rh, and Ir, which corresponds nicely to the observed volcano shaped correlation between catalytic activities and respective CO adsorption heat. This is a strong indication that CO gets activated on the metal surface during the reaction and different metals have different activation energies. The authors also observed that the turn over number of Pt/Al2O3 was one order of magnitude higher than that of Pt/SiO2, indicating a strong support effect, which the authors ascri...

Zhao, Zhun

2014-01-01T23:59:59.000Z

30

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Cu/Zn-based catalysts improved by adding magnesium for water–gas shift reaction  

Science Journals Connector (OSTI)

Ternary Cu/MeO/ZnO (Me: alkaline-earth metal, Mg, Ca, Sr and Ba) catalysts were prepared by homogeneous precipitation (hp) using urea hydrolysis. The structure and the activity for the water–gas shift reaction of these catalysts were studied compared with those of the catalysts prepared by coprecipitation (cp). The highest activity was obtained over hp-Cu/MgO/ZnO among the catalysts tested. The catalyst precursors after the precipitation contained mainly aurichalcite, (Cu,Zn)5(CO3)2(OH)16, while the decomposed products after the calcination contained apparently CuO and ZnO as crystalline phases, since the amount of Mg actually included in the catalyst was less than 1.0 at.%. The Cu metal surface area was larger and the particle size of Cu metal was smaller on the hp-catalysts than those on the cp-catalysts; nonetheless the BET surface area was sometimes larger on the latter than on the former. The addition of ?0.1 at.% of Mg was the most effective, resulting in the highest activity as well as the lowest activation energy. A good correlation was observed between the amount of Cu+ species and the activation energy of the shift reaction, suggesting that MgO significantly enhanced the formation of Cu+ species as the active sites. Even after the pre-reduction at the high temperature, 250 °C, hp-Cu/MgO/ZnO catalyst showed no significant decrease in the activity as well as no detectable sintering in the Cu metal particles during 50 h of the reaction. It was supposed that the shift reaction proceeds by a reduction–oxidation mechanism between Cu0 ? Cu+.

Tetsuya Shishido; Manabu Yamamoto; Ikuo Atake; Dalin Li; Yan Tian; Hiroyuki Morioka; Masahide Honda; Tsuneji Sano; Katsuomi Takehira

2006-01-01T23:59:59.000Z

47

Effect of low steam/carbon ratio on water gas shift reaction  

Science Journals Connector (OSTI)

Cu/ZnO/Al2O3 catalysts prepared by reverse co-precipitation and an industrial catalyst were used for the low-temperature water gas shift reaction. The catalysts were characterized by chemical analysis (atomic absorption spectroscopy), BET surface area, nitrous oxide chemisorption, X-ray diffraction (XRD), temperature-programmed reduction (TPR), X-ray photoelectron spectroscopy (XPS) and catalytic activity in the target reaction. The catalyst prepared by reverse co-precipitation showed higher BET and copper surface areas, as well as higher catalytic activity. XRD patterns showed that the aurichalcite and hydrozincite precursors were converted into crystalline CuO and ZnO oxides when calcined in air at 623 K. TPR profiles revealed that Cu(I) oxide forms prior to Cu. Binding energies corresponding to several copper states on fresh catalysts were observed by XPS, but copper was in the metallic state during the reaction conditions (reduced catalyst). By varying the catalytic reaction conditions, such as vapor/carbon ratio and the time of contact, it is possible to obtain different conversion rates of carbon monoxide and thus operate under conditions of lower vapor consumption.

Renan Tavares Figueiredo; André Luis Dantas Ramos; Heloysa Martins Carvalho de Andrade; J.L.G. Fierro

2005-01-01T23:59:59.000Z

48

Mechanism of the Water Gas Shift Reaction on Pt: First Principles, Experiments, and Microkinetic Modeling  

SciTech Connect (OSTI)

The research described in this product was performed in part in the Environmental Molecular Sciences Laboratory, a national scientific user facility sponsored by the Department of Energy's Office of Biological and Environmental Research and located at Pacific Northwest National Laboratory. We present a microkinetic model as well as experimental data for the low-temperature water gas shift (WGS) reaction catalyzed by Pt at temperatures from 523 to 573 K and for various gas compositions at a pressure of 1 atm. Thermodynamic and kinetic parameters for the model are derived from periodic, self-consistent density functional theory (DFT-GGA) calculations on Pt(111). The destabilizing effect of high CO surface coverage on the binding energies of surface species is quantified through DFT calculations and accounted for in the microkinetic model. Deviations of specific fitted model parameters from DFT calculated parameters on Pt(111) point to the possible role of steps/defects in this reaction. Our model predicts reaction rates and reaction orders in good agreement with our experiments. The calculated and experimental apparent activation energies are 67.8 kJ/mol and 71.4 kJ/mol, respectively. The model shows that the most significant reaction channel proceeds via a carboxyl (COOH) intermediate. Formate (HCOO), which has been experimentally observed and thought to be the key WGS intermediate in the literature, is shown to act only as a spectator species.

Grabow, Lars C.; Gokhale, Amit A.; Evans, Steven T.; Dumesic, James A.; Mavrikakis, Manos

2008-03-27T23:59:59.000Z

49

Density Functional Theory and Reaction Kinetics Studies of the Water–Gas Shift Reaction on Pt–Re Catalysts  

SciTech Connect (OSTI)

Periodic, self-consistent density functional theory calculations (DFT-GGA-PW91) on Pt(111) and Pt3Re(111) surfaces, reaction kinetics measurements, and microkinetic modeling are employed to study the mechanism of the water–gas shift (WGS) reaction over Pt and Pt–Re catalysts. The values of the reaction rates and reaction orders predicted by the model are in agreement with the ones experimentally determined; the calculated apparent activation energies are matched to within 6% of the experimental values. The primary reaction pathway is predicted to take place through adsorbed carboxyl (COOH) species, whereas formate (HCOO) is predicted to be a spectator species. We conclude that the clean Pt(111) is a good representation of the active site for the WGS reaction on Pt catalysts, whereas the active sites on the Pt–Re alloy catalyst likely contain partially oxidized metal ensembles.

Carrasquillo-Flores, Ronald; Gallo, Jean Marcel R.; Hahn, Konstanze; Dumesic, James A.; Mavrikakis, Manos

2013-12-01T23:59:59.000Z

50

E-Print Network 3.0 - air pollution active Sample Search Results  

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Gas Separation by Adsorption in Order to Increase CO2 Conversion to CO via Reverse Water Gas Shift (RWGS) Reaction .  

E-Print Network [OSTI]

??In this research project, adsorption is considered in conjunction with the reverse water gas shift reaction in order to convert CO2 to CO for synthetic… (more)

Abdollahi, Farhang

2013-01-01T23:59:59.000Z

52

Metal/ceria water-gas shift catalysts for automotive polymer electrolyte fuel cell system.  

SciTech Connect (OSTI)

Polymer electrolyte fuel cell (PEFC) systems are a leading candidate for replacing the internal combustion engine in light duty vehicles. One method of generating the hydrogen necessary for the PEFC is reforming a liquid fuel, such as methanol or gasoline, via partial oxidation, steam reforming, or autothermal reforming (a combination of partial oxidation and steam reforming). The H{sub 2}-rich reformate can contain as much as 10% carbon monoxide. Carbon monoxide has been shown to poison the platinum-based anode catalyst at concentrations as low as 10 ppm,1 necessitating removal of CO to this level before passing the reformate to the fuel cell stack. The water-gas shift (WGS) reaction, CO + H{sub 2}O {rightleftharpoons} CO{sub 2} + H{sub 2}, is used to convert the bulk of the reformate CO to CO{sub 2}. Industrially, the WGS reaction is conducted over two catalysts, which operate in different temperature regimes. One catalyst is a FeCr mixed oxide, which operates at 350-450 C and is termed the high-temperature shift (HTS) catalyst. The second catalyst is a CuZn mixed oxide, which operates at 200-250 C and is termed the low-temperature shift (LTS) catalyst. Although these two catalysts are used industrially in the production of H{sub 2} for ammonia synthesis, they have major drawbacks that make them unsuitable for transportation applications. Both the LTS and the HTS catalysts must first be ''activated'' before being used. For example, the copper in the copper oxide/zinc oxide LTS catalyst must first be reduced to elemental copper in situ before it becomes active for the WGS reaction. This reduction reaction is exothermic and must be carried out under well- controlled conditions using a dilute hydrogen stream (1 vol% H{sub 2}) to prevent high catalyst temperatures, which can result in sintering (agglomeration) of the copper particles and loss of active surface area for the WGS reaction. Also, once the catalyst has been activated by reduction, it must be protected from exposure to ambient air to prevent re-oxidation of the copper. The activated catalyst must also be protected from the condensation of liquids, for example, during start-up or transient operation. For these reasons, a more thermally rugged catalyst is needed which has sufficient activity to operate at the low temperatures that are thermodynamically necessary to achieve low CO concentrations.

Myers, D. J.; Krebs, J. F.; Carter, J. D.; Kumar, R.; Krumpelt, M.

2002-01-11T23:59:59.000Z

53

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NETL: Gasification- Water-Gas Shift (WGS) Tests to Reduce Steam Use  

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Syngas Processing Systems Syngas Processing Systems Water-Gas Shift (WGS) Tests to Reduce Steam Use National Carbon Capture Center at the Power Systems Development Facility Southern Company Services, Inc. Project Number: NT0000749 Project Description The National Carbon Capture Center is testing commercial water-gas shift (WGS) catalysts from multiple vendors in support of developing WGS reactor systems which will reduce the cost of carbon dioxide (CO2) capture from the production of syngas using coal. These tests have revealed that steam-to-carbon monoxide (CO) ratios can be reduced, resulting in a substantial increase in the net power output and significantly reducing the cost of electricity from an integrated gasification combined cycle (IGCC) plant with CO2 capture. Several commercially available WGS catalysts have been tested, and the results are being provided to the manufacturers to aid them in specifying future WGS systems for IGCC plants incorporating CO2 capture.

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Water-gas Shift Reaction on oxide/Cu(111): Rational Catalyst Screening from Density Functional Theory  

SciTech Connect (OSTI)

Developing improved catalysts based on a fundamental understanding of reaction mechanism has become one of the grand challenges in catalysis. A theoretical understanding and screening the metal-oxide composite catalysts for the water-gas shift (WGS) reaction is presented here. Density functional theory was employed to identify the key step for the WGS reaction on the Au, Cu-oxide catalysts, where the calculated reaction energy for water dissociation correlates well with the experimental measured WGS activity. Accordingly, the calculated reaction energy for water dissociation was used as the scaling descriptor to screen the inverse model catalysts, oxide/Cu(111), for the better WGS activity. Our calculations predict that the WGS activity increases in a sequence: Cu(111), ZnO/Cu(111) < TiO{sub 2}/Cu(111), ZrO{sub 2}/Cu(111) < MoO{sub 3}/Cu(111). Our results imply that the high performances of Au, Cu-oxide nanocatalysts in the WGS reaction rely heavily on the direct participation of both oxide and metal sites. The degree that the oxide is reduced by Cu plays an important role in determining the WGS activity of oxide/Cu catalysts. The reducible oxide can be transformed from the fully oxidized form to the reduced form due to the interaction with Cu and, therefore, the transfer of electron density from Cu, which helps in releasing the bottleneck water dissociation and, therefore, facilitating the WGS reaction on copper.

Liu, P.

2010-11-28T23:59:59.000Z

85

The synergistic effect of the structural precursors of Cu/ZnO/Al2O3 catalysts for water–gas shift reaction  

Science Journals Connector (OSTI)

The Cu/ZnO/Al2O3 catalysts (Cu/Zn = 1, Al = 4–24 mol%) prepared by co-precipitation were investigated for low-temperature water–gas shift reaction (WGSR) in H2-rich feed gas and characterized by means of XRD, DSC and TPR. The synergistic effect of the structural precursors was detected in catalyst containing Al level of 12 mol%, in which CO conversion reaches to 97.5% at 513 K. It suggests that aurichalcite has been partially intercalated into the hydrotalcite and assimilated the surrounding structure during precipitation, which eventually enhances the interaction between the active centers and supports of the catalyst.

Wei Fu; Zhenghong Bao; Weizhong Ding; Kuochih Chou; Qian Li

2011-01-01T23:59:59.000Z

86

NREL Develops Accelerated Sample Activation Process for Hydrogen Storage Materials (Fact Sheet)  

SciTech Connect (OSTI)

This fact sheet describes NREL's accomplishments in developing a new sample activation process that reduces the time to prepare samples for measurement of hydrogen storage from several days to five minutes and provides more uniform samples. Work was performed by NREL's Chemical and Materials Science Center.

Not Available

2010-12-01T23:59:59.000Z

87

Effects of noble metal-doping on Cu/ZnO/Al2O3 catalysts for water–gas shift reaction: Catalyst preparation by adopting “memory effect” of hydrotalcite  

Science Journals Connector (OSTI)

Trace amounts of noble metal were doped on Cu/ZnO/Al2O3 catalysts by adopting “memory effect” of hydrotalcite. Ternary Cu/ZnO/Al2O3 (molar ratio Cu/Zn = 1/1, Al content 0–25 mol%) catalysts were prepared by co-precipitation (cp) from metal nitrates; a mixture of hydrotalcite (Cu,Zn)6Al2(OH)16CO3·4H2O, and aurichalcite (Cu,Zn)5(CO3)2(OH)6, was formed at pH 9 with NaOH as the pH controller. Finally the sample, cp-Cu/Zn/Al(45/45/10) containing mainly aurichalcite together with a small amount of hydrotalcite, was selected as the precursor for the noble metal-doping. Noble metal-doping was conducted by dipping the precursor calcined at 300 °C in aqueous solutions of the noble metal nitrates; hydrotalcite was reconstituted by the “memory effect” and simultaneously noble metals were incorporated. The noble metal-doped samples were calcined at 300 °C and tested for the water–gas shift (WGS) reaction. Among the noble metals, Pt was the most effective for stabilizing the catalytic activity although some deactivation due to Cu sintering took place. An intrinsic promoting effect of Pt was clearly observed by evaluating the turnover frequency of the catalyst. Aurichalcite was indispensable for producing active Cu/ZnO sites, whereas a small amount of hydrotalcite was effective for improving the sustainability of the catalyst by the surface modification. It is likely that hydrogen-spillover from trace Pt to active Cu metal not only enhanced the activity via the reduction–oxidation cycle between Cu0 and Cu+ but also stabilized the active Cu metal species against oxidative sintering during the reaction.

Kazufumi Nishida; Ikuo Atake; Dalin Li; Tetsuya Shishido; Yasunori Oumi; Tsuneji Sano; Katsuomi Takehira

2008-01-01T23:59:59.000Z

88

Hydordesulfurization of dibenzothiophene using hydrogen generated in situ by the water-gas shift reaction in a trickle bed reactor  

E-Print Network [OSTI]

HYDRODESULFURIZATION OF DIBENZOTHIOPHENE USING HYDROGEN GENERATED IN SITU BY THE WATER ? GAS SHIFT REACTION IN A TRICKLE BED REACTOR A Thesis BRUCE DAVID HOOK Submitted to the Graduate College of Texas A&M University in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE December 1984 Major Subject: Chemical Engineering HYDRODESULFURIZATION OF DIBENZOTHIOPHENE USING HYDROGEN GENERATED IN SITU BY THE WATER ? GAS SHIFT REACTION IN A TRICKLE BED REACTOR A Thesis by BRUCE...

Hook, Bruce David

2012-06-07T23:59:59.000Z

89

Gas Sampling At Rye Patch Area (DOE GTP) | Open Energy Information  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Gas Sampling At Rye Patch Area (DOE GTP) (Redirected from Water-Gas Samples At Rye Patch Area (DOE GTP)) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Gas Sampling At Rye Patch Area (DOE GTP) Exploration Activity Details Location Rye Patch Area Exploration Technique Gas Sampling Activity Date Usefulness not indicated DOE-funding Unknown References (1 January 2011) GTP ARRA Spreadsheet Retrieved from "http://en.openei.org/w/index.php?title=Gas_Sampling_At_Rye_Patch_Area_(DOE_GTP)&oldid=689417" Categories: Exploration Activities

90

E-Print Network 3.0 - activities activity advanced Sample Search...  

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Advanced... MOU Active All available disciplines http:www.tuwien.ac.attuweinhomeen Bangladesh Southeast... University PEP MOU Active Electrical and electronic engineering...

91

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AHR airway hyperresponsiveness AP-1 activator... factor GAP GTPase-activating protein GDI guanine dissociation inhibitor GEF guanine exchange factor GM Source: Groningen,...

92

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93

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Powered by Explorit Topic List Advanced Search Sample search results for: activated t-cells nfat Page: << < 1 2 3 4 5 > >> 1 The Transcription Factor NFAT3 Mediates Neuronal...

94

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95

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96

E-Print Network 3.0 - active laser media Sample Search Results  

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Search Powered by Explorit Topic List Advanced Search Sample search results for: active laser media Page: << < 1 2 3 4 5 > >> 1 1.0 INTRODUCTION The term, laser, is an acronym for...

97

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Sample search results for: active drop counting Page: << < 1 2 3 4 5 > >> 1 Titan Recreation-Group Fitness Student Engagement Report Summary: hours of Drop In Fitness classes...

98

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99

E-Print Network 3.0 - active catch tanks Sample Search Results  

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catch tanks Search Powered by Explorit Topic List Advanced Search Sample search results for: active catch tanks Page: << < 1 2 3 4 5 > >> 1 Tips For Residential Heating Oil Tank...

100

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biogas process Search Powered by Explorit Topic List Advanced Search Sample search results for: active biogas process Page: << < 1 2 3 4 5 > >> 1 Institute for Renewable Energy Ltd...

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101

E-Print Network 3.0 - activates atp-sensitive potassium Sample...  

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atp-sensitive potassium Search Powered by Explorit Topic List Advanced Search Sample search results for: activates atp-sensitive potassium Page: << < 1 2 3 4 5 > >> 1 ATP-sensitive...

102

E-Print Network 3.0 - atp activates map Sample Search Results  

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map Search Powered by Explorit Topic List Advanced Search Sample search results for: atp activates map Page: << < 1 2 3 4 5 > >> 1 Nucleotide Specificity of the Enzymatic and...

103

E-Print Network 3.0 - arthritis disease activity Sample Search...  

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Sample search results for: arthritis disease activity Page: << < 1 2 3 4 5 > >> 1 CURRICULUM VITAE DANIEL J. McCARTY, M.D. Summary: of Arthritis and Metabolic Diseases, Department...

104

E-Print Network 3.0 - activated bleaching earth Sample Search...  

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bleaching earth Search Powered by Explorit Topic List Advanced Search Sample search results for: activated bleaching earth Page: << < 1 2 3 4 5 > >> 1 Mass Coral Reef Bleaching: A...

105

E-Print Network 3.0 - activated white cell Sample Search Results  

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106

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heart rate Search Powered by Explorit Topic List Advanced Search Sample search results for: activity heart rate Page: << < 1 2 3 4 5 > >> 1 Automatic quantification of liver-heart...

107

E-Print Network 3.0 - active conflict zones Sample Search Results  

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zones Search Powered by Explorit Topic List Advanced Search Sample search results for: active conflict zones Page: << < 1 2 3 4 5 > >> 1 Proactive Approach for Reducing Non-Value...

108

E-Print Network 3.0 - air pollutants structure-activity Sample...  

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Sample search results for: air pollutants structure-activity Page: << < 1 2 3 4 5 > >> 1 Air Pollution Physics and Chemistry EAS 6790 Monday, Wednesday, Friday 2:05 to 2:55...

109

E-Print Network 3.0 - activate trpm2 channels Sample Search Results  

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trpm2 channels Search Powered by Explorit Topic List Advanced Search Sample search results for: activate trpm2 channels Page: << < 1 2 3 4 5 > >> 1 Accumulation of Free ADP-ribose...

110

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trpv3 channels Search Powered by Explorit Topic List Advanced Search Sample search results for: activating trpv3 channels Page: << < 1 2 3 4 5 > >> 1 caspase-8 became enzymatically...

111

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112

Ten channel background alpha radiometer for nondestructive analysis of low activity samples  

SciTech Connect (OSTI)

The description of a ten-channel alpha-radiometer based on large-area semiconductor detectors is presented in this paper. The radiometer is intended for determination of soil pollution by alpha-active radionuclides using thick samples. The analysis of isotopes is also provided. The concentrations of Pu and Am isotopes in soil samples are determined.

Pugatch, V.M.; Pavlenko, Y.N.; Vasiliev, Y.O.; Nenakhov, A.N.; Tkatch, N.M.; Barabash, L.I.; Berdnichenko, S.V.; Litovchenko, P.G.; Rosenfeld, A.B.; Zinets, O.S. (Inst. for Nuclear Research, Kiev (USSR))

1992-10-01T23:59:59.000Z

113

Surface Gas Sampling At Long Valley Caldera Area (Goff & Janik, 2002) |  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Surface Gas Sampling At Long Valley Caldera Area (Goff & Janik, 2002) (Redirected from Water-Gas Samples At Long Valley Caldera Area (Goff & Janik, 2002)) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Surface Gas Sampling At Long Valley Caldera Area (Goff & Janik, 2002) Exploration Activity Details Location Long Valley Caldera Area Exploration Technique Surface Gas Sampling Activity Date Usefulness not indicated DOE-funding Unknown Notes Gas samples from fumaroles, springs, and/or wells. At shallow depths in the caldera

114

Surface Gas Sampling At Valles Caldera - Sulphur Springs Area (Goff &  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Surface Gas Sampling At Valles Caldera - Sulphur Springs Area (Goff & Janik, 2002) (Redirected from Water-Gas Samples At Valles Caldera - Sulphur Springs Area (Goff & Janik, 2002)) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Surface Gas Sampling At Valles Caldera - Sulphur Springs Area (Goff & Janik, 2002) Exploration Activity Details Location Valles Caldera - Sulphur Springs Area Exploration Technique Surface Gas Sampling Activity Date Usefulness not indicated DOE-funding Unknown Notes Gas samples from fumaroles, springs, and/or wells.

115

Surface Gas Sampling At Fenton Hill Hdr Geothermal Area (Goff & Janik,  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Surface Gas Sampling At Fenton Hill Hdr Geothermal Area (Goff & Janik, 2002) (Redirected from Water-Gas Samples At Fenton Hill Hdr Geothermal Area (Goff & Janik, 2002)) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Surface Gas Sampling At Fenton Hill Hdr Geothermal Area (Goff & Janik, 2002) Exploration Activity Details Location Fenton Hill Hdr Geothermal Area Exploration Technique Surface Gas Sampling Activity Date Usefulness not indicated DOE-funding Unknown Notes Gas samples from HDR well References Fraser Goff, Cathy J. Janik (2002) Gas Geochemistry Of The Valles

116

Surface Gas Sampling At Jemez Springs Area (Goff & Janik, 2002) | Open  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Surface Gas Sampling At Jemez Springs Area (Goff & Janik, 2002) (Redirected from Water-Gas Samples At Jemez Springs Area (Goff & Janik, 2002)) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Surface Gas Sampling At Jemez Springs Area (Goff & Janik, 2002) Exploration Activity Details Location Jemez Springs Area Exploration Technique Surface Gas Sampling Activity Date Usefulness not indicated DOE-funding Unknown Notes Gas samples from fumaroles, springs, and/or wells. References Fraser Goff, Cathy J. Janik (2002) Gas Geochemistry Of The Valles

117

Surface Gas Sampling At Yellowstone Region (Goff & Janik, 2002) | Open  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Surface Gas Sampling At Yellowstone Region (Goff & Janik, 2002) (Redirected from Water-Gas Samples At Yellowstone Region (Goff & Janik, 2002)) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Surface Gas Sampling At Yellowstone Region (Goff & Janik, 2002) Exploration Activity Details Location Yellowstone Caldera Geothermal Region Exploration Technique Surface Gas Sampling Activity Date Usefulness not indicated DOE-funding Unknown Notes Gas samples from fumaroles, springs, and/or wells. References Fraser Goff, Cathy J. Janik (2002) Gas Geochemistry Of The Valles

118

Surface Gas Sampling At Valles Caldera - Redondo Area (Goff & Janik, 2002)  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Surface Gas Sampling At Valles Caldera - Redondo Area (Goff & Janik, 2002) (Redirected from Water-Gas Samples At Valles Caldera - Redondo Area (Goff & Janik, 2002)) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Surface Gas Sampling At Valles Caldera - Redondo Area (Goff & Janik, 2002) Exploration Activity Details Location Valles Caldera - Redondo Area Exploration Technique Surface Gas Sampling Activity Date Usefulness not indicated DOE-funding Unknown Notes Gas samples from fumaroles, springs, and/or wells. References Fraser Goff, Cathy J. Janik (2002) Gas Geochemistry Of The Valles

119

Effective MgO surface doping of Cu/Zn/Al oxides as water–gas shift catalysts  

Science Journals Connector (OSTI)

Trace amounts of MgO were doped on Cu/ZnO/Al2O3 catalysts with the Cu/Zn/Al molar ratio of 45/45/10 and tested for the water–gas shift (WGS) reaction. A mixture of Zn(Cu)–Al hydrotalcite (HT) and Cu/Zn aurichalcite was prepared by co-precipitation (cp) of the metal nitrates and calcined at 300 °C to form the catalyst precursor. When the precursor was dispersed in an aqueous solution of Mg(II) nitrate, HT was reconstituted by the “memory effect.” During this procedure, the catalyst particle surface was modified by MgO-doping, leading to a high sustainability. Contrarily, cp-Mg/Cu/Zn/Al prepared by Mg2+, Cu2+, Zn2+ and Al3+ co-precipitation as a control exhibited high activity but low sustainability. Mg2+ ions were enriched in the surface layer of m-Mg–Cu/Zn/Al, whereas Mg2+ ions were homogeneously distributed throughout the particles of cp-Mg/Cu/Zn/Al. CuO particles were significantly sintered on the m-catalyst during the dispersion, whereas CuO particles were highly dispersed on the cp-catalyst. However, the m-catalyst was more sustainable against sintering than the cp-catalyst. Judging from TOF, the surface doping of MgO more efficiently enhanced an intrinsic activity of the m-catalyst than the cp-catalyst. Trace amounts of MgO on the catalyst surface were enough to enhance both activity and sustainability of the m-catalyst by accelerating the reduction–oxidation between Cu0 and Cu+ and by suppressing Cu0 (or Cu+) oxidation to Cu2+.

Kazufumi Nishida; Dalin Li; Yingying Zhan; Tetsuya Shishido; Yasunori Oumi; Tsuneji Sano; Katsuomi Takehira

2009-01-01T23:59:59.000Z

120

E-Print Network 3.0 - activity activity coefficient Sample Search...  

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The literature on environmental activism has failed to produce a model of ... Source: Lubell, Mark - Department of Environmental Science and Policy, University of California,...

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121

E-Print Network 3.0 - activities activity coefficients Sample...  

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The literature on environmental activism has failed to produce a model of ... Source: Lubell, Mark - Department of Environmental Science and Policy, University of California,...

122

E-Print Network 3.0 - active endoribonuclease activity Sample...  

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a type I ER transmembrane receptor kinaseendoribonuclease... . IRE1 senses ER protein folding needs through its luminal domain. Prior to UPR activation, IRE1 is held......

123

Microsoft Word - Evaluation of Alternate Water Gas Shift for Carbon Capture Final Final Report .doc  

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Evaluation of Alternate Water Evaluation of Alternate Water Gas Shift Configurations for IGCC Systems August 5, 2009 DOE/NETL-401/080509 Disclaimer This report was prepared as an account of work sponsored by an agency of the United States Government. 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 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 therein 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

124

Kinetic studies of the water gas shift reaction on a sulfided cobalt/molybdena/alumina catalyst  

SciTech Connect (OSTI)

In this study, the applicability of low temperature oxygen chemisorption (LTOC) to measure the specific surface area of several rare-earth oxides (La, Ce, Pr, Nd, Tb) and the kinetics of the water-gas shift reaction over a sulfided cobalt-molybdena-alumina (AMOCAT 1A) catalyst are investigated. The LTOC results indicate that oxygen is possibly adsorbed in the molecular form, O/sub 2//sup -/, as observed by others after heat treatment of these oxides in vacuum. Lanthana and ceria were found to have ratios of total surface area to LTOC similar to those of chromia and molybdena respectively, after a comparable pretreatment. Furthermore, ceria is deduced to exist as a monolayer on the alumina support at loadings below 12%. An additional hour of reduction after the 6 hours of reduction shows a significant increase in LTOC on lanthana, neodymia and terbia which may be due to phase changes exhibited by these polymorphic oxides. The kinetics of the water-gas shift reaction has been extensively studied on iron oxide (high temperature shift) and copper oxide (low temperature shift) based catalysts. This investigation establishes the kinetics over a sulfided cobalt-molybdena-alumina (AMOCAT 1A) catalyst in the medium temperature shift range, 250-300/sup 0/C. The catalyst was sulfided in-situ in a high pressure integrated Berty reactor system. Reaction rates were measured for different CO/H/sub 2/O feed ratios in the range 0.3-3.0, with and without CO/sub 2/ in the feed. The reaction was carried out at several pressures in the range 5-27 atm. and GHSV's in the range 4800-2400 hr/sup 1/.

Srivatsa, N.R.

1987-01-01T23:59:59.000Z

125

Surface Gas Sampling At Fenton Hill Hdr Geothermal Area (Grigsby, Et Al.,  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Surface Gas Sampling At Fenton Hill Hdr Geothermal Area (Grigsby, Et Al., 1983) (Redirected from Water-Gas Samples At Fenton Hill Hdr Geothermal Area (Grigsby, Et Al., 1983)) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Surface Gas Sampling At Fenton Hill Hdr Geothermal Area (Grigsby, Et Al., 1983) Exploration Activity Details Location Fenton Hill Hdr Geothermal Area Exploration Technique Surface Gas Sampling Activity Date Usefulness not indicated DOE-funding Unknown References C. O. Grigsby, J. W. Tester, P. E. Trujillo, D. A. Counce, J.

126

Surface Gas Sampling At Lassen Volcanic National Park Area (Janik &  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Surface Gas Sampling At Lassen Volcanic National Park Area (Janik & Mclaren, 2010) (Redirected from Water-Gas Samples At Lassen Volcanic National Park Area (Janik & Mclaren, 2010)) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Surface Gas Sampling At Lassen Volcanic National Park Area (Janik & Mclaren, 2010) Exploration Activity Details Location Lassen Volcanic National Park Area Exploration Technique Surface Gas Sampling Activity Date Usefulness not indicated DOE-funding Unknown References Cathy J. Janik, Marcia K. McLaren (2010) Seismicity And Fluid

127

E-Print Network 3.0 - anhydrase activators activation Sample...  

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Inc. All rights reserved. PII S1095-6433(97)00439-X Summary: .C.; Ruzicka, C.A.; Sly, W.S. Pul-carbonic anhydrase activity. J. Appl. Physiol. 55:75-83; 1983. monary... H: A...

128

Slurry phase Fischer-Tropsch synthesis: Cobalt plus a water-gas shift catalyst. [Quarterly] report, June 30, 1988--September 30, 1988  

SciTech Connect (OSTI)

This report details experiments performed on three different copper-based catalysts: Cu/Cr{sub 2}O{sub 3}, Cu/MnO/Cr{sub 2}O{sub 3} and Cu/ZnO/Al{sub 2}O{sub 3}. Of these three catalysts, the Cu/ZnO/Al{sub 2}O{sub 3} exhibits the greatest stability when slurried in octacosane. More than 1000 hours-on-stream indicate that the catalyst activity is not detrimentally affected by high pressure, high H{sub 2}/CO ratio, or the presence of alkenes. All of these are necessary stability characteristics for the water-gas shift catalyst, if it is to be used in combination with a cobalt Fischer-Tropsch catalyst. A review of documented reduction procedures for cobalt-based Fischer-Tropsch catalysts is presented.

Yates, I.C.; Satterfield, C.N.

1988-12-31T23:59:59.000Z

129

TA Orientation 2005 Activity 14 Evaluating Sample Laboratory Report from Laboratory Manual  

E-Print Network [OSTI]

. Please keep in mind the information from Activities 17 & #18a as you go through the following 2 student is expected in each section of the report). 2. Individually evaluate the sample laboratory report ­ mark down laboratory report. 5. Mark down any and all comments made during the presentation on the example student

Minnesota, University of

130

Probing the Reaction Intermediates for the Water-Gas Shift over Inverse CeOx/Au(111) Catalysts  

SciTech Connect (OSTI)

The water-gas shift (WGS) is an important reaction for the production of molecular H{sub 2} from CO and H{sub 2}O. An inverse CeO{sub x}/Au(1 1 1) catalyst exhibits a very good WGS activity, better than that of copper surfaces or Cu nanoparticles dispersed on a ZnO(0 0 0 {bar 1}) substrate which model current WGS industrial catalysts. In this work we report on intermediates likely to arise during the CO + H{sub 2}O reaction over CeO{sub x}/Au(1 1 1) using soft X-ray photoemission (sXPS) and near-edge X-ray absorption fine structure (NEXAFS). Several potential intermediates including formates (HCOO), carbonates (CO{sub 3}) and carboxylates (HOCO) are considered. Adsorption of HCOOH and CO{sub 2} is used to create both HCOO and CO{sub 3} on the CeO{sub x}/Au(1 1 1) surface, respectively. HCOO appears to have greater stability with desorption temperatures up to 600 K while CO{sub 3} only survives on the surface up to 300 K. On the CeO{sub x}/Au(1 1 1) catalysts, the presence of Ce{sup 3+} leads to the dissociation of H{sub 2}O to give OH groups. We demonstrate experimentally that the OH species are stable on the surface up to 600 K and interact with CO to yield weakly bound intermediates. When there is an abundance of Ce{sup 4+}, the OH concentration is diminished and the likely intermediates are carbonates. As the surface defects are increased and the Ce{sup 3+}/Ce{sup 4+} ratio grows, the OH concentration also grows and both carbonate and formate species are observed on the surface after dosing CO to H{sub 2}O/CeO{sub x}/Au(1 1 1). The addition of ceria nanoparticles to Au(1 1 1) is essential to generate an active WGS catalyst and to increase the production and stability of key reaction intermediates (OH, HCOO and CO{sub 3}).

Rodriguez, J.A.; Senanayake, S.D.; Stacchiola, D.; Evans, J.; Estrella, M.; Barrio-Pliego, L.; Pérez, M.; Hrbek, J.

2010-05-04T23:59:59.000Z

131

Probing the Reaction Intermediates for the Water–gas Shift over Inverse CeOx / Au(1 1 1) Catalysts  

SciTech Connect (OSTI)

The water-gas shift (WGS) is an important reaction for the production of molecular H{sub 2} from CO and H{sub 2}O. An inverse CeO{sub x}/Au(1 1 1) catalyst exhibits a very good WGS activity, better than that of copper surfaces or Cu nanoparticles dispersed on a ZnO(0 0 0 {bar 1}) substrate which model current WGS industrial catalysts. In this work we report on intermediates likely to arise during the CO + H{sub 2}O reaction over CeO{sub x}/Au(1 1 1) using soft X-ray photoemission (sXPS) and near-edge X-ray absorption fine structure (NEXAFS). Several potential intermediates including formates (HCOO), carbonates (CO{sub 3}) and carboxylates (HOCO) are considered. Adsorption of HCOOH and CO{sub 2} is used to create both HCOO and CO{sub 3} on the CeO{sub x}/Au(1 1 1) surface, respectively. HCOO appears to have greater stability with desorption temperatures up to 600 K while CO{sub 3} only survives on the surface up to 300 K. On the CeO{sub x}/Au(1 1 1) catalysts, the presence of Ce{sup 3+} leads to the dissociation of H{sub 2}O to give OH groups. We demonstrate experimentally that the OH species are stable on the surface up to 600 K and interact with CO to yield weakly bound intermediates. When there is an abundance of Ce{sup 4+}, the OH concentration is diminished and the likely intermediates are carbonates. As the surface defects are increased and the Ce{sup 3+}/Ce{sup 4+} ratio grows, the OH concentration also grows and both carbonate and formate species are observed on the surface after dosing CO to H{sub 2}O/CeO{sub x}/Au(1 1 1). The addition of ceria nanoparticles to Au(1 1 1) is essential to generate an active WGS catalyst and to increase the production and stability of key reaction intermediates (OH, HCOO and CO{sub 3}).

Senanayake, S.; Stacchiola, D; Evans, J; Estrella, M; Barrio, L; Perez, M; Hrbek, J; Rodriguez, J

2010-01-01T23:59:59.000Z

132

E-Print Network 3.0 - affect atp-activated p2x7 Sample Search...  

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atp-activated p2x7 Search Powered by Explorit Topic List Advanced Search Sample search results for: affect atp-activated p2x7 Page: << < 1 2 3 4 5 > >> 1 Cell Tissue Res (2005)...

133

An optimally designed stack effluent sampling system with transpiration for active transmission enhancement  

E-Print Network [OSTI]

for which there is no true real-time measurement is particulate mass. A light attenuation system that is based on the opacity of the stack gas is used in an attempt to fill this void. Though this system provides monitoring on a real time basis...AN OPTIMALLY DESIGNED STACK EFFLUENT SAMPLING SYSTEM WITH TRANSPIRATION FOR ACTIVE TRANSMISSION ENHANCEMENT TROY J. SCHROEDER Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements...

Schroeder, Troy J.

1995-01-01T23:59:59.000Z

134

Parametric Gasification of Oak and Pine Feedstocks Using the TCPDU and Slipstream Water-Gas Shift Catalysis  

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Parametric Gasification of Oak Parametric Gasification of Oak and Pine Feedstocks Using the TCPDU and Slipstream Water-Gas Shift Catalysis Jason Hrdlicka, Calvin Feik, Danny Carpenter, and Marc Pomeroy Technical Report NREL/TP-510-44557 December 2008 Parametric Gasification of Oak and Pine Feedstocks Using the TCPDU and Slipstream Water-Gas Shift Catalysis Jason Hrdlicka, Calvin Feik, Danny Carpenter, and Marc Pomeroy Prepared under Task No. H2713B13 Technical Report NREL/TP-510-44557 December 2008 National Renewable Energy Laboratory 1617 Cole Boulevard, Golden, Colorado 80401-3393 303-275-3000 * www.nrel.gov NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy Operated by the Alliance for Sustainable Energy, LLC

135

Pilot Scale Water Gas Shift - Membrane Device for Hydrogen from Coal  

SciTech Connect (OSTI)

The objectives of the project were to build pilot scale hydrogen separation systems for use in a gasification product stream. This device would demonstrate fabrication and manufacturing techniques for producing commercially ready facilities. The design was a 2 lb/day hydrogen device which included composite hydrogen separation membranes, a water gas shift monolith catalyst, and stainless steel structural components. Synkera Technologies was to prepare hydrogen separation membranes with metallic rims, and to adjust the alloy composition in their membranes to a palladium-gold composition which is sulfur resistant. Chart was to confirm their brazing technology for bonding the metallic rims of the composite membranes to their structural components and design and build the 2 lbs/day device incorporating membranes and catalysts. WRI prepared the catalysts and completed the testing of the membranes and devices on coal derived syngas. The reactor incorporated eighteen 2'' by 7'' composite palladium alloy membranes. These membranes were assembled with three stacks of three paired membranes. Initial vacuum testing and visual inspection indicated that some membranes were cracked, either in transportation or in testing. During replacement of the failed membranes, while pulling a vacuum on the back side of the membranes, folds were formed in the flexible composite membranes. In some instances these folds led to cracks, primarily at the interface between the alumina and the aluminum rim. The design of the 2 lb/day device was compromised by the lack of any membrane isolation. A leak in any membrane failed the entire device. A large number of tests were undertaken to bring the full 2 lb per day hydrogen capacity on line, but no single test lasted more than 48 hours. Subsequent tests to replace the mechanical seals with brazing have been promising, but the technology remains promising but not proven.

Barton, Tom

2013-06-30T23:59:59.000Z

136

Water-gas shift reaction over Cu/ZnO and Cu/ZnO/Al2O3 catalysts prepared by homogeneous precipitation  

Science Journals Connector (OSTI)

Both binary Cu/ZnO and ternary Cu/ZnO/Al2O3 catalysts were prepared by homogeneous precipitation (hp) using urea hydrolysis. The structure and the activity for the water-gas shift reaction of these catalysts were studied compared with those prepared by coprecipitation (cp). The binary precursors contained hydroxycarbonates such as malachite and aurichalcite phases, whereas the ternary precursors were composed of hydrotalcite, malachite and aurichalcite phases depending on the metal composition. After thermal decomposition, both catalysts contained apparently CuO and ZnO as crystalline phase. No phase derived from Al was observed, since the amount of Al was small as 10 at.% in the ternary catalysts. After reduction pretreatment with hydrogen, the catalysts were tested for the shift reaction between 150 and 300 °C. The activity of hp-catalysts was higher than that of cp-catalysts; binary hp-Cu/ZnO showed higher activity than ternary hp-Cu/ZnO/Al2O3 catalysts none the less the surface area was larger for the latter than for the former. The activity apparently depended on the surface area of Cu metal formed on the surface of hp-catalysts and a good correlation was observed between the Cu metal particle size and the activation energy of the shift reaction. However, more precise evaluation of the activity based on turn-over frequency strongly suggested the formation of Cu+ species as the active sites at the boundary between Cu metal particles and ZnO particles. Even after the pre-reduction at the high temperature, 250 °C, hp-Cu/ZnO catalyst showed no significant deactivation as well as no detectable sintering of the Cu metal particles during 50 h of the reaction, indicating that the hp-preparation method afforded the Cu catalysts with high sustainability in the shift reaction.

Tetsuya Shishido; Manabu Yamamoto; Dalin Li; Yan Tian; Hiroyuki Morioka; Masahide Honda; Tsuneji Sano; Katsuomi Takehira

2006-01-01T23:59:59.000Z

137

X-Ray Spectral Parameters for a Sample of 95 Active Galactic Nuclei  

E-Print Network [OSTI]

We present a broadband X-ray analysis of a new homogeneous sample of 95 active galactic nuclei (AGN) from the 22-month Swift/BAT all-sky survey. For this sample we treated jointly the X-ray spectra observed by XMM-Newton and INTEGRAL missions for the total spectral range of 0.5-250 keV. Photon index \\Gamma, relative reflection R, equivalent width of Fe $K_{\\alpha}$ line (EW Fe $K_{\\alpha}$), hydrogen column density $N_{H}$, exponential cut-off energy $E_{c}$ and intrinsic luminosity $L_{corr}$ are determined for all objects of the sample. We investigated correlations \\Gamma - R, EW Fe $K_{\\alpha}$ - $L_{corr}$, \\Gamma - $E_{c}$, EW Fe $K_{\\alpha}$ - $N_{H}$. Dependence \\Gamma - R for Seyfert 1 and 2 type of galaxies has been investigated separately. We found that the relative reflection parameter at low power-law indexes for Seyfert 2 galaxies is systematically higher than for Seyfert 1 ones. This can be related to an increasing contribution of the reflected radiation from the gas-dust torus. Our data show th...

Vasylenko, A; Fedorova, E

2015-01-01T23:59:59.000Z

138

Catalytic behavior of ternary Cu/ZnO/Al2O3 systems prepared by homogeneous precipitation in water-gas shift reaction  

Science Journals Connector (OSTI)

Ternary Cu/ZnO/Al2O3 catalysts have been prepared by homogeneous precipitation (hp) using urea hydrolysis and tested for the water-gas shift reaction. The Cu/Zn ratio was fixed at 1/1, and the effects of the Al addition on the precipitation procedure, the precursor structure and the catalytic activity have been studied. The precipitation proceeded stepwise; Cu(II) nitrate was first hydrolyzed, followed by the hydrolysis of Zn(II) nitrate, but the final compounds consist mainly of aurichalcite. It is likely that amorophous Cu(OH)2 formed first was converted to aurichalcite via a dissolution-reprecipitation mechanism assisted by Zn(II). A significant leaching of Cu took place with increasing Al content during the precipitation at 90 °C. The Cu leaching was effectively suppressed by lowering the temperature to 80 °C, but resulting in a slight decrease in the catalytic activity. In the hp-catalyst precursors, aurichalcite was always observed as the main component, whereas hydrotalcite and malachite appeared with increasing Al component. The catalytic activity increased by the addition of 5 mol% of Al and decreased with further addition of Al. The activity apparently depended on the Cu metal surface area on the catalyst, but the turn over frequency calculated based on the surface Cu metal significantly varied depending on the Al content. Moreover, the intensity of the reduction peak around 225 °C assigned to Cu2+ ? Cu+ in the TPR well correlated with the catalytic activity. It is suggested that Cu/Zn bimetallic aurichalcite has an important role as the catalyst precursor and the reduction–oxidation between Cu+ and Cu0 plays in the catalytic mechanism of the shift reaction.

Ikuo Atake; Kazufumi Nishida; Dalin Li; Tetsuya Shishido; Yasunori Oumi; Tsuneji Sano; Katsuomi Takehira

2007-01-01T23:59:59.000Z

139

E-Print Network 3.0 - atp-activated p2x7 receptor Sample Search...  

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Search Powered by Explorit Topic List Advanced Search Sample search results for: atp-activated p2x7 receptor Page: << < 1 2 3 4 5 > >> 1 Cell Tissue Res (2005) 321: 411418...

140

SPRING 2014 CHEMISTRY COLLOQUIA "Fundamental Studies on the Water-gas Shift Reaction on  

E-Print Network [OSTI]

/Oxide Catalysts: Active Sites and Reaction Mechanism" The high-performance of gold-ceria, copper-ceria and gold

Tsymbal, Evgeny Y.

Note: This page contains sample records for the topic "activity water-gas samples" 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

Regenerable MgO-based sorbent for high temperature CO2 removal from syngas: 3. CO2 capture and sorbent enhanced water gas shift reaction  

Science Journals Connector (OSTI)

Abstract Regenerable MgO-based sorbent, which was prepared and evaluated in the thermogravimetric analyzer (TGA) in part 1, was also evaluated in high-pressure packed-bed unit in CO2/N2/H2O mixture and simulated pre-combustion syngas environment. In CO2/N2/H2O environment, the CO2 absorption capacity of the sorbent increases with increasing temperatures from 6.7% at 350 °C to 9.5% 450 °C. The sorbent is capable of achieving over 95% CO2 capture and 40% conversion in the water gas shift (WGS) reaction, which should be attributed to positive effect of WGS reaction in producing CO2 during the process. The sorbent reactivity and absorption capacity toward CO2, as well as its WGS catalytic activity decreases with increasing temperature. The maximum pre-breakthrough WGS conversion occurs at 350 °C, which diminishes as the sorbent is carbonated. The variable diffusivity shrinking core reaction model coupled with the two-fluid computational fluid dynamics (CFD) model was shown to accurately predict the break-through gas compositions at different operating conditions.

Emadoddin Abbasi; Armin Hassanzadeh; Shahin Zarghami; Hamid Arastoopour; Javad Abbasian

2014-01-01T23:59:59.000Z

142

Heat Integration of the Water-Gas Shift Reaction System for Carbon Sequestration Ready IGCC Process with Chemical Looping  

SciTech Connect (OSTI)

Integrated gasification combined cycle (IGCC) technology has been considered as an important alternative for efficient power systems that can reduce fuel consumption and CO2 emissions. One of the technological schemes combines water-gas shift reaction and chemical-looping combustion as post gasification techniques in order to produce sequestration-ready CO2 and potentially reduce the size of the gas turbine. However, these schemes have not been energetically integrated and process synthesis techniques can be applied to obtain an optimal flowsheet. This work studies the heat exchange network synthesis (HENS) for the water-gas shift reaction train employing a set of alternative designs provided by Aspen energy analyzer (AEA) and combined in a process superstructure that was simulated in Aspen Plus (AP). This approach allows a rigorous evaluation of the alternative designs and their combinations avoiding all the AEA simplifications (linearized models of heat exchangers). A CAPE-OPEN compliant capability which makes use of a MINLP algorithm for sequential modular simulators was employed to obtain a heat exchange network that provided a cost of energy that was 27% lower than the base case. Highly influential parameters for the pos gasification technologies (i.e. CO/steam ratio, gasifier temperature and pressure) were calculated to obtain the minimum cost of energy while chemical looping parameters (oxidation and reduction temperature) were ensured to be satisfied.

Juan M. Salazara; Stephen E. Zitney; Urmila M. Diwekara

2010-01-01T23:59:59.000Z

143

E-Print Network 3.0 - activation analysis--an analytical Sample...  

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(SOP), water sampling plans, Summary: procedures, and NOAA's Analytical Quality Assurance Project Plan (QAPP). Samples were sent to certified... accredited analytical...

144

E-Print Network 3.0 - active network analysis Sample Search Results  

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activity of coupled networks. The neurons... and activity propagation in coupled neural networks from rat cortical cells grown on a micro-electrode array... for parallel activity...

145

Characterization of CeO2-Supported Cu-Pd Bimetallic Catalyst for the Oxygen-Assisted Water-Gas Shift Reaction  

SciTech Connect (OSTI)

This study was focused to investigate the roles of Cu and Pd in CuPd/CeO2 bimetallic catalysts containing 20-30 wt% Cu and 0.5-1 wt% Pd used in the oxygen-assisted water-gas shift (OWGS) reaction employing a combined bulk and surface characterization techniques such as XRD, TPR, CO chemisorption, and in-situ XPS. The catalytic activity for CO conversion and the stability of catalyst during on-stream operation increased by the addition of Cu to Pd/CeO2 or Pd to Cu/CeO2 monometallic catalysts, especially when the OWGS reaction was performed under low temperatures, below 200oC. The bimetallic catalyst after leaching with nitric acid retained about 60% of its original activity. The TPR of monometallic Cu/CeO2 showed reduction of CuO supported on CeO2 in two distinct regions, around 150 and 250oC. The high temperature peak disappeared and reduction occurred in a single step around 150oC upon Pd addition. The Pd dispersion decreased from 38.5% for Pd/CeO2 to below 1% for CuPd/CeO2 bimetallic catalyst. In-situ XPS studies showed a shift in Cu 2p peaks toward lower binding energy (BE) with concommitant shift in the Pd 3d peaks toward higher BE. Addition of Pd decreased the surface Cu concentration while the concentration of Pd remained unaltered. All these observations indicated the formation of Cu-Pd surface alloy. The valence band XP spectra collected below 10 eV corroborated the core level XP spectra and indicated that Cu is mainly involved in the catalytic reaction. The improved catalytic activity and stability of CuPd/CeO2 bimetallic catalyst was attributed to the alloy formation.

Fox, Elise; Velu, Subramani; Engelhard, Mark H.; Chin, Ya-Huei; Miller, Jeffrey T.; Kropf, Jeremy; Song, Chunshan

2008-12-10T23:59:59.000Z

146

E-Print Network 3.0 - activity restrictions influence Sample...  

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: 1. SUMMARY OF LEGAL REQUIREMENTS AND RESTRICTIONS 2. PROHIBITED AND RESTRICTED POLITICAL ACTIVITIES... REQUIREMENTS AND RESTRICTIONS a. Campaign Activities -- Contributions...

147

E-Print Network 3.0 - active trail protein Sample Search Results  

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already declines the proteolytic activity tremendously and improves protein production... active. Hence, the solubility and accumulation level of ... Source: Groningen,...

148

The Integration of a Structural Water-Gas-Shift Catalyst with a Vanadium Alloy Hydrogen Transport Device  

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

9 9 The InTegraTIon of a STrucTural WaTer- gaS-ShIfT caTalyST WITh a VanadIum alloy hydrogen TranSporT deVIce Description The purpose of this project is to produce a scalable device that simultaneously performs both water-gas-shift (WGS) and hydrogen separation from a coal-derived synthesis gas stream. The justification of such a system is the improved efficiency for the overall production of hydrogen. Removing hydrogen from the synthesis gas (syngas) stream allows the WGS reaction to convert more carbon monoxide (CO) to carbon dioxide (CO 2 ) and maximizes the total hydrogen produced. An additional benefit is the reduction in capital cost of plant construction due to the removal of one step in the process by integrating WGS with the membrane separation device.

149

Carbon capture by sorption-enhanced water-gas shift reaction process using hydrotalcite-based material  

SciTech Connect (OSTI)

A novel route for precombustion decarbonization is the sorption-enhanced water-gas shift (SEWGS) process. In this process carbon dioxide is removed from a synthesis gas at elevated temperature by adsorption. Simultaneously, carbon monoxide is converted to carbon dioxide by the water-gas shift reaction. The periodic adsorption and desorption of carbon dioxide is induced by a pressure swing cycle, and the cyclic capacity can be amplified by purging with steam. From previous studies is it known that for SEWGS applications, hydrotalcite-based materials are particularly attractive as sorbent, and commercial high-temperature shift catalysts can be used for the conversion of carbon monoxide. Tablets of a potassium promoted hydrotalcite-based material are characterized in both breakthrough and cyclic experiments in a 2 m tall fixed-bed reactor. When exposed to a mixture of carbon dioxide, steam, and nitrogen at 400{sup o}C, the material shows a breakthrough capacity of 1.4 mmol/g. In subsequent experiments the material was mixed with tablets of promoted iron-chromium shift catalyst and exposed to a mixture of carbon dioxide, carbon monoxide, steam, hydrogen, and nitrogen. It is demonstrated that carbon monoxide conversion can be enhanced to 100% in the presence of a carbon dioxide sorbent. At breakthrough, carbon monoxide and carbon dioxide simultaneously appear at the end of the bed. During more than 300 cycles of adsorption/reaction and desorption, the capture rate, and carbon monoxide conversion are confirmed to be stable. Two different cycle types are investigated: one cycle with a CO{sub 2} rinse step and one cycle with a steam rinse step. The performance of both SEWGS cycles are discussed.

van Selow, E.R.; Cobden, P.D.; Verbraeken, P.A.; Hufton, J.R.; van den Brink, R.W. [Energy research Center of the Netherlands, Petten (Netherlands)

2009-05-15T23:59:59.000Z

150

E-Print Network 3.0 - active particle control Sample Search Results  

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Purdue University Collection: Engineering ; Materials Science 51 REVIEW OF DIESEL PARTICULATE MATTER SAMPLING METHODS Supplemental Report 2 Summary: . The following...

151

E-Print Network 3.0 - active tridentate schiff Sample Search...  

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Interoperability, the Pros and Cons Beth Plale1 Summary: approach, Trident has more activities to manage and track, whereas for the remote... activities A, B, E, and F. Activity B...

152

E-Print Network 3.0 - active 8b solar Sample Search Results  

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0 Summary: 12;Big Bear Solar Observatory 32 The Sun in XThe Sun in X--Ray LightRay Light Solar Activity MinimumSolar... Activity Minimum ----19961996 Solar Activity...

153

E-Print Network 3.0 - active duty army Sample Search Results  

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Reserve 6 11 12 29 Coast Guard Active Active Duty 3 3 1 7 Coast Guard ... Source: New Hampshire, University of - Department of Electrical and Computer Engineering, Consolidated...

154

E-Print Network 3.0 - active-duty military women Sample Search...  

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21... 54 42 117 Army Reserve Reserve 6 11 12 29 Coast Guard Active Active ... Source: New Hampshire, University of - Department of Electrical and Computer Engineering,...

155

E-Print Network 3.0 - alternaria activates dendritic Sample Search...  

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M.E. (2007) Effects of anesthetics on dendritic activity. Cellular... .E., Sakmann, B., Helmchen, F. (2001) Active dendritic properties of rat neocortical layer 23...

156

E-Print Network 3.0 - activity evoked neural Sample Search Results  

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episodes of rhythmic activity on synaptic transmission in several spinal pathways... of firing in cut muscle afferents during an episode of activity. The post-episode depression...

157

E-Print Network 3.0 - active left-sided inflammatory Sample Search...  

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Medicine 77 Browne, CB, Research Proposal, March 2009 Activation of the Inflammasome in Gout Summary: Browne, CB, Research Proposal, March 2009 1 Activation of the Inflammasome in...

158

E-Print Network 3.0 - active region derived Sample Search Results  

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five active ... Source: New Jersey Institute of Technology, Center for Solar-Terrestrial Research Collection: Physics 2 Activity 1: Understand the fundamental concept of function...

159

E-Print Network 3.0 - active chromatin marks Sample Search Results  

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structure Summary: structure II. HATs are co-activatorsHDACscorepressors III. ATP-driven chromatin remodeling complexes IV... is the silent state? What is the active...

160

E-Print Network 3.0 - activity interactive recall Sample Search...  

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for: activity interactive recall Page: << < 1 2 3 4 5 > >> 1 Introduction Many cognitive functions, and memory in particular,1 Summary: ) was more active during encoding...

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


161

E-Print Network 3.0 - activity knee motion Sample Search Results  

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-second hold in the extended position. Isometric reflex torques from the knee and ankle joint and EMG activity... and smoothed EMG activity was calculated during the hold...

162

E-Print Network 3.0 - active single basin Sample Search Results  

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basins... ) existed during the Late Oligocene and Miocene when the rift basins of Thailand were active because active... into three main areas and tec- tonic provinces: 1)...

163

E-Print Network 3.0 - active eph controls Sample Search Results  

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adhesion. Interaction between ephrins and Eph receptors can also activate the ligand (Brueckner et... growth In vertebrates activation of Eph receptors in axonal growth cones is...

164

E-Print Network 3.0 - abrogate transactivational activity Sample...  

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transcription and contains three potent activation domains... significance in other CNC proteins. SKN-1 binds to and activates tran- scription through the p300c Source:...

165

E-Print Network 3.0 - activated sludge treatment Sample Search...  

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on the activated sludge... the in this way with the operating conditions of the wastewater treatment plant. Images of activated sludge... Figure 9 shows the influences of...

166

E-Print Network 3.0 - activity cycles Sample Search Results  

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Sciences and Ecology 3 UNCORRECTEDPROOF 2 A method to evaluate the level of solar activity at Summary: the level of solar activity at the remainder of a progressing...

167

E-Print Network 3.0 - anti oxidant activity Sample Search Results  

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homogeneous catalysts are known to display high activities in useful oxidation... nanoparticles and their catalytic activities in the oxidations of olefins, sulfides, and cyclic...

168

E-Print Network 3.0 - antitumour activity complex-formation Sample...  

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antiangiogenic and antitumour activity of the combination of the natural flavonoid fisetin and Summary: 1 Improved antiangiogenic and antitumour activity of the combination of...

169

E-Print Network 3.0 - activity-dependent spine loss Sample Search...  

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| APRIL 2005 | 277 Summary: to activity- dependent filopodia growth and spine formation. J. Neurosci. 23, 10645-10649 (2003). 10. Goldin... with a constitutively active Rho...

170

E-Print Network 3.0 - active longitudinal painting Sample Search...  

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a Quick & Easy Asteroid Belt Tactile Graphic to use with VI Individuals for Vesta Fiesta Activities Summary: Activities For those groups hosting Vesta Fiesta parties and...

171

E-Print Network 3.0 - active comparator study Sample Search Results  

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show higher activity, compared... cell technology is the low activity of platinum electrocatalyst used for oxygen ... Source: Popov, Branko N. - Center for Electrochemical...

172

E-Print Network 3.0 - activation heat Sample Search Results  

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to collect and distribute solar heat. These buildings have active solar heating systems. Active... in an ordinary fur- nace system. ... Source: North Carolina State...

173

E-Print Network 3.0 - activity preferentially inhibits Sample...  

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of inhibition to physiological activity in vivo, where both the intensity of synap- tic activity as well... sensitive, preferentially increased tonic ... Source: Huguenard,...

174

E-Print Network 3.0 - activation studies reveal Sample Search...  

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is Summary: parietal sensory and rostral cingulate activity. In this study, we examine brain activity related... Our recent fMRI studies indicate that spontaneous chronic...

175

E-Print Network 3.0 - activated microglia immunoreactive Sample...  

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but its heat treatment abolished the activity. Although IL... PGRP78 may activate EOR in the ... Source: Durstewitz, Daniel - Research Group Computational Neuroscience,...

176

E-Print Network 3.0 - activated vasoconstrictor systems Sample...  

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of cyclooxygenase pathway activation following endoperoxide thromboxane receptor (TP) stimulation was studied... specific G-protein coupled (1). Activation of TxA2 receptor...

177

E-Print Network 3.0 - active region magnetic Sample Search Results  

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AND DYNAMICS OF INTERCONNECTING LOOPS AND CORONAL HOLES IN ACTIVE LONGITUDES Summary: Sun. All hot active region loops are visible in this wavelength. Eruptions of new' and...

178

E-Print Network 3.0 - active human sialyltransferase Sample Search...  

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effect on the angiogenic activity of human umbilical vein... -2,6- sialyltransferase activities By semiquantitative ... Source: Gleeson, Joseph G. - Department of Neurosciences,...

179

E-Print Network 3.0 - activities including modelling Sample Search...  

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models. We analyse five different developments, viz., Coordination Theory, Activity... Theory, Task Manager model, ActionInteraction Theory and Object-Oriented Activity Support...

180

E-Print Network 3.0 - active fault zone Sample Search Results  

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Earth Structure (2nd Edition), 2004 Summary: 292010 Oceanic Transform Faults and Fracture Zones Transform Fault: Active displacement. Fracture Zone: Fossil... fault, no active...

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181

E-Print Network 3.0 - alters mitochondrial activity Sample Search...  

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is required for fission activity41 . The recruitment of Dnm1 to yeast mitochondrial fis- sion... of dynamics Mitochondrial fusion and fission activities are probably...

182

E-Print Network 3.0 - activity protects mitochondrial Sample...  

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is required for fission activity41 . The recruitment of Dnm1 to yeast mitochondrial fis- sion... of dynamics Mitochondrial fusion and fission activities are probably...

183

E-Print Network 3.0 - activation analysis pgaa Sample Search...  

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for: activation analysis pgaa Page: << < 1 2 3 4 5 > >> 1 Combinatorial approaches for hydrogen storage materials Summary: Gamma Activation Analysis (PGAA) Quantitative H...

184

E-Print Network 3.0 - antioxidant enzymatic activities Sample...  

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activities that control degenerative oxidative... purple corn and red-fleshed sweet potato have even higher antioxidant capacity and antiradical activity... of their antioxidant...

185

E-Print Network 3.0 - active mmp-2 effectively Sample Search...  

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and suppressed the release and activation of matrix metalloprotease-2 (MMP-2). While chitosan... that included 5 ng of active human recombinant MMP-2 (Calbiochem, CA, USA) or...

186

E-Print Network 3.0 - activated prothrombin complex Sample Search...  

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is enzymatically active. Our study has also shed some... C3, C5, and factor B bind to chitosan without complement activation ... Source: Buschmann, Michael - Biomaterials and...

187

E-Print Network 3.0 - activity current hypotheses Sample Search...  

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administrating, filtering and routing hypotheses as sub-activities within the major processes... sub-activity, the data token is compared with existing ... Source: Laskey,...

188

E-Print Network 3.0 - activates selective nociceptive Sample...  

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Page: << < 1 2 3 4 5 > >> 1 PLATELET-ACTIVATING FACTOR AFFECTS NOCICEPTION IN RATS AT CEREBRAL SITES OF ACTION Summary: 1 PLATELET-ACTIVATING FACTOR AFFECTS NOCICEPTION...

189

E-Print Network 3.0 - applying active lubrication Sample Search...  

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sides, " Active Control of Wetting Using Applied Electrical Potentials and Self... the hydro- phobicity of the binding sites between micro-parts and substrates. Active assembly...

190

E-Print Network 3.0 - active lubrication applied Sample Search...  

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sides, " Active Control of Wetting Using Applied Electrical Potentials and Self... the hydro- phobicity of the binding sites between micro-parts and substrates. Active assembly...

191

E-Print Network 3.0 - activity rules periodic Sample Search Results  

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Active and Deductive Databases by Institut fur Informatik ---Report 70 Summary: , passive query rules and active transition rules within a simple, yet flexible logical...

192

E-Print Network 3.0 - active solar systems Sample Search Results  

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. ACTIVE SOLAR SYSTEMS Solar collectors are designed to take advan- tage of the greenhouse effect. The flat... " solar system (Figure 2). It is called active because it requires...

193

E-Print Network 3.0 - active solar thermal Sample Search Results  

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. ACTIVE SOLAR SYSTEMS Solar collectors are designed to take advan- tage of the greenhouse effect. The flat... " solar system (Figure 2). It is called active because it requires...

194

E-Print Network 3.0 - armoured actively cooled Sample Search...  

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on the actively cooled plasma facing components (PFCs) of the International Thermonuclear Experimental Reactor... of the actively cooled component itself. These have...

195

E-Print Network 3.0 - active filter utilizing Sample Search Results  

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TRANSACTIONS ON POWER ELECTRONICS, VOL. 17, NO. 1, JANUARY 2002 A New Hybrid Active Power Filter (APF) Topology Summary: active power filter topology. The function of the IGBT...

196

E-Print Network 3.0 - activity mediates attention Sample Search...  

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to motion or vice-versa. By contrasting the activity during attention to motion and color, we were able... M identified areas that exhibited more tonic activity for ......

197

E-Print Network 3.0 - active galaxy ngc Sample Search Results  

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regions and global infrared emission in the disks of these galaxies... of the phenomenology of infrared activity in galaxies. It is not clear how such activity is triggered...

198

E-Print Network 3.0 - anti microbial activity Sample Search Results  

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Visual Sample Plan Collection: Environmental Management and Restoration Technologies 3 Cotton gauze bearing non-diffusible quaternary ammonium salts and featuring anti-microbial...

199

E-Print Network 3.0 - activation measure pam13 Sample Search...  

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learning Uncertainty sampling Version space reduction and query by committee Expected error Source: Mitchell, Tom - School of Computer Science, Carnegie Mellon University...

200

Design and preparation of high-surface-area Cu/ZnO/Al2O3 catalysts using a modified co-precipitation method for the water-gas shift reaction  

Science Journals Connector (OSTI)

Abstract Highly dispersed Cu/ZnO/Al2O3 catalysts were prepared by modifying a conventional co-precipitation method. By manipulating the preparation conditions, in this case solvent, precipitating temperature, and pH, a Cu surface area of 45.5 ± 1.7 m2/g was prepared, which was much greater than the surface area of 11.4–31.7 m2/g obtained by the conventional co-precipitation method and seemed to be the largest Cu surface area ever reported in the literature. The preparation of catalysts with a high Cu surface area was attributed to the formation of aurichalcite, a complex containing Cu and Zn. The catalysts prepared by the modified co-precipitation method were used for a water-gas shift reaction, exhibiting higher catalytic activity compared to those prepared by the conventional co-precipitation method.

Adeline Budiman; Muhammad Ridwan; Sung Min Kim; Jae-Wook Choi; Chang Won Yoon; Jeong-Myeong Ha; Dong Jin Suh; Young-Woong Suh

2013-01-01T23:59:59.000Z

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201

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

202

E-Print Network 3.0 - activates survival signals Sample Search...  

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for a design method that (1) incorporates survivability as an active trade in the design process, (2) captures... activities, and are not to be confused with the eight phases...

203

E-Print Network 3.0 - activity dueto self-selection Sample Search...  

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the limit... NP only if no active generation limit is reached. Analogously, the demand price pi"is equal to real NP... (apparentpower) A line flow limit activation (Tab. 2a)...

204

E-Print Network 3.0 - active duty military Sample Search Results  

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military leave to employees who are called to active duty in accordance with the terms described below... of the two for the remainder of the active duty period. (See...

205

E-Print Network 3.0 - activate neuronal potassium Sample Search...  

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neurons prepared from the same SCN. The activity of 10 cells was recorded in each... -firing-frequency observed in our experiments may have resulted from averaging the activity...

206

E-Print Network 3.0 - active stall wind Sample Search Results  

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wind Page: << < 1 2 3 4 5 > >> 1 Power control of a wind farm with active stall wind turbines and AC grid connection Summary: Power control of a wind farm with active stall...

207

E-Print Network 3.0 - activity promotes natural Sample Search...  

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

and RPS5 Summary: to TAFdep promoters is activator dependent but appears to be relatively independent of other GTFs... targets of some activators is consistent with a variety of...

208

E-Print Network 3.0 - active magnetic regenerator Sample Search...  

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1D model of an active magnetic regenerative refrigerator (AMRR) that was developed in MATLAB. The model uses cycle inputs such as the fluid mass flow and Summary: of an Active...

209

E-Print Network 3.0 - active magnetic regeneration Sample Search...  

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1D model of an active magnetic regenerative refrigerator (AMRR) that was developed in MATLAB. The model uses cycle inputs such as the fluid mass flow and Summary: of an Active...

210

E-Print Network 3.0 - active catalytic sites Sample Search Results  

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interface to the active site andor a macromolecular substrate-binding site.21... (IXegf1)a-TF. The active site is depicted by superimposing the catalytic domains of the nal...

211

E-Print Network 3.0 - a-induced aromatase activation Sample Search...  

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aromatase activation Page: << < 1 2 3 4 5 > >> 1 ORIGINAL ARTICLE Aromatase mRNA in the Brain of Adult Green Anole Lizards: Effects of Summary: activity and mRNA expression in...

212

E-Print Network 3.0 - activated polyamine catabolism Sample Search...  

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Tat 317 APAF1 apoptotic peptidase activating factor 1 1... dissociation inhibitor (GDI) alpha 2 Tat; Vpr 466 ATF1 activating transcription factor 1 1 Vpr 467 ATF3......

213

E-Print Network 3.0 - activating factor acetylhydrolase Sample...  

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Tat 317 APAF1 apoptotic peptidase activating factor 1 1... dissociation inhibitor (GDI) alpha 2 Tat; Vpr 466 ATF1 activating transcription factor 1 1 Vpr 467 ATF3......

214

E-Print Network 3.0 - active fabry-perot semiconductor Sample...  

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Physics 45 The Laser DiodeThe Laser Diode Jason HillJason Hill Summary: to a Light Emitting Diode Active medium is a semiconductor pActive medium is a semiconductor p--n...

215

E-Print Network 3.0 - activating delayed rectifier Sample Search...  

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Summary: itself. The concept of active damping for the current-source rectifier is not new. However, most research... of 3.65-6.09 pu. Active damping uses the rectifier to...

216

E-Print Network 3.0 - activity-dependent synapse remodeling Sample...  

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in Developing Hippocampal John C. Fiala,1 Marcia Feinberg,1 Viktor Popov2, Kristen M. Harris1 Summary: branches and spines via both activity-dependent and non-activity-dependent...

217

E-Print Network 3.0 - active site confers Sample Search Results  

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Summary: through a number of sources: Student Activities Conference Support: http:www.wm.eduofficesstudentactivitiesfundingconferences... Student Conference Support...

218

E-Print Network 3.0 - active video games Sample Search Results  

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activated to learn, searching for solutions, both ... Source: Larsson, Thomas - School of Innovation, Design and Engineering, Mlardalen University Collection: Computer...

219

E-Print Network 3.0 - activated sewage sludge Sample Search Results  

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University Collection: Geosciences ; Environmental Sciences and Ecology 66 Advanced Wastewater Treatment Processes Summary: Treatment Plant Conventional Activated Sludge Process...

220

Application of dosimetry measurements to analyze the neutron activation of a stainless steel sample in a training nuclear reactor  

Science Journals Connector (OSTI)

Abstract All materials present in the core of a nuclear reactor are activated by neutron irradiation. The activity so generated produces a dose around the material. This dose is a potential risk for workers in the surrounding area when materials are withdrawn from the reactor. Therefore, it is necessary to assess the activity generated and the dose produced. In previous works, neutron activation of control rods and doses around the storage pool where they are placed have been calculated for a Boiling Water Reactor using the MCNP5 code based on the Monte Carlo method. Most of the activation is produced indeed in stainless steel components of the nuclear reactor core not only control rods. In this work, a stainless steel sample is irradiated in the Training Reactor AKR-2 of the Technical University Dresden. Dose measurements around the sample have been performed for different times after the irradiation. Experimental dosimetric values are compared with results of Monte Carlo simulation of the irradiation. Comparison shows a good agreement. Hence, the activation Monte Carlo model can be considered as validated.

J. Ródenas; S. Gallardo; F. Weirich; W. Hansen

2014-01-01T23:59:59.000Z

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221

Role of metal components in Pd?Cu bimetallic catalysts supported on CeO2 for the oxygen-enhanced water gas shift  

SciTech Connect (OSTI)

Catalytic hydrogen production and CO removal in a post-reforming process are critical for low-temperature fuel cell applications. The present study aims at clarifying the role of metal components in bimetallic catalysts for oxygen-enhanced water gas shift (OWGS), wherein a small amount of O{sub 2} is added to H{sub 2}-rich reformate gas to enhance CO shift. Among CeO{sub 2}-supported bimetallic catalysts, Pd-Cu and Pt-Cu combinations were found to show strong synergetic promoting effect in OWGS, which leads to much higher CO conversion and higher H{sub 2} yield than WGS at low temperature around 250 C. Temperature programmed reduction (TPR) showed strong interaction between Pd and Cu in Pd-Cu/CeO{sub 2} by a single reduction peak in contrast to multiple peaks on monometallic Cu/CeO{sub 2}. Extended X-ray absorption fine structure (EXAFS) analysis revealed that such bimetallic Pd-Cu and Pt-Cu form alloy nanoparticles, where noble metal is mainly surrounded by Cu atoms. Oxygen storage capacity (OSC) measurements point to higher resistance of Pd-Cu to oxidation indicating that Pd keeps Cu in reduced state in air pulse condition. From kinetic study, Pd in Pd-Cu was found to promote CO shift, rather than CO oxidation by increasing the number of active sites and by suppressing H{sub 2} activation (that is inherent to monometallic Pd), which minimizes both the inhibition effect of H{sub 2} and the loss of H{sub 2} by oxidation in OWGS. Transient response technique revealed that Cu in Pd-Cu enhances desorption of strongly chemisorbed CO{sub 2} on catalyst surface in contrast to very slow CO{sub 2} desorption from surface of monometallic Pd. Thus, the excellent OWGS activity of Pd-Cu catalyst has been attributed to the complementary roles of the two metals for enhancing CO shift, which is realized by its alloy structure and the accompanying strong interaction between metal components.

Kugai, J.; Miller, J. T.; Guo, N.; Song, C. (Chemical Sciences and Engineering Division); ( PSC-USR); (Penn State Univ.)

2011-06-01T23:59:59.000Z

222

E-Print Network 3.0 - activity based costing Sample Search Results  

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based costing Page: << < 1 2 3 4 5 > >> 1 Generating and Maintaining Activity-based Cost Estimates with Feature-Based Product Models Summary: 1 Generating and Maintaining...

223

E-Print Network 3.0 - acetylcholinesterase ache activity Sample...  

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their activity to reactivate ... Source: Cirkva, Vladimir - Institute of Chemical Process Fundamentals, Prague Collection: Chemistry 69 Reprint from Handbook of Experimental...

224

E-Print Network 3.0 - automated activity monitoring Sample Search...  

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Collection: Computer Technologies and Information Sciences 4 http:hfs.sagepub.com Ergonomics Society Summary: that automation does not simply supplant human activity but rather...

225

E-Print Network 3.0 - active flow control Sample Search Results  

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4 Control of Resonant Flow Inside a Supersonic Cavity Using High Bandwidth Pulsed Micro-actuators Summary: , Tallahassee, FL 32310 Active control of high speed flows has...

226

E-Print Network 3.0 - active galaxies chandra Sample Search Results  

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Galaxy PKS 2349-014 - Active ... Source: Brandt, William Nielsen - Department of Astronomy and Astrophysics, Pennsylvania State University Collection: Physics 3...

227

E-Print Network 3.0 - active metal-based corrosion Sample Search...  

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rates. Activated carbon also increased the corrosion... High temperature corrosion of water wall tube in coalfired combustion gases K. akagawa('),M. i... -Ku Nagoya 459,...

228

E-Print Network 3.0 - active-learning laboratory session Sample...  

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visual expertise, while... , Nehem and Reily found students in active- learning classes held fewer misconceptions and better grasp... be of great concern that only 30 percent of...

229

E-Print Network 3.0 - active fault detection Sample Search Results  

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the adjudged or hypothesized cause... of an error. A fault is active ... Source: Powell, David - Laboratoire d'Analyse et d'Architecture des Systmes du CNRS Collection:...

230

E-Print Network 3.0 - activator inhibitor-1 binding Sample Search...  

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, allowing CDK activity to drive cells into S ... Source: Roth, David B. - Langone Medical Center, New York University Collection: Biology and Medicine 80 Ranking the...

231

E-Print Network 3.0 - acetyltransferase hat activity Sample Search...  

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histone acetyltransferase implicated in the regulation of transcriptional silencing, and ORC is the six... - strate that sas2D reduces the silencing activities of silencers...

232

E-Print Network 3.0 - activity gis coding Sample Search Results  

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code Visit... )" The Authorization Wizard will prompt you for an authorization code; enter your activated code. Support for the ArcGIS... After ... Source: Ronquist, Fredrik -...

233

E-Print Network 3.0 - angiotensin-induced neuronal activity Sample...  

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Biology and Medicine 57 Computation with Spiking Neurons Lambda Wolfgang Maass Summary: circuit of spiking neurons, where firing activity is propagated from layer to layer. From...

234

E-Print Network 3.0 - acid o-methyltransferase activity Sample...  

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Plant Journal 8, 855... reduced caffeic acid O-methyltransferase activity. Plant Phy- siology 123, 1363-1373. Kersey, R., Inoue, K... lignin units. Caffeic ... Source: Ye,...

235

E-Print Network 3.0 - activity growth rate Sample Search Results  

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allows continuous tracking of promoter activity as cells change their growth rate from exponential... in the distribution across conditions, and their fractional promoter...

236

E-Print Network 3.0 - activation show similar Sample Search Results  

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

recognition plays an important role in many areas Summary: a similarity function via a Web search. Our goal is to trans- fer activities between different physical spaces... AT...

237

E-Print Network 3.0 - activated ras alters Sample Search Results  

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Biology and Medicine ; Chemistry 3 R342 Dispatch Ras effectors: Buying shares in Ras plc Summary: activated Ras can regulate phosphoinositide-specific phospholipase C (PLC) has...

238

E-Print Network 3.0 - activation linker regulates Sample Search...  

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regulated isozymes. The XY linker... that the XY linker serves to autoinhibit PLC-b2 and that regulated removal of the linker from the active... . Similar ... Source:...

239

E-Print Network 3.0 - alpha activates src-family Sample Search...  

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of a Src family... that participates, directly or indirectly, in the activation of PLC is the Src family.47 Src family ... Source: Foltz, Kathleen - Department of Molecular,...

240

E-Print Network 3.0 - activates vanilloid receptor Sample Search...  

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C activation. Large classes of G pro- tein-coupled receptors (Gq11; linked to PLC ) and ty... ; TRPV, transient ... Source: Clapham, David E. - Department of...

Note: This page contains sample records for the topic "activity water-gas samples" from the National Library of EnergyBeta (NLEBeta).
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241

E-Print Network 3.0 - activate trkb signaling Sample Search Results  

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signalling downstream of TrkB. Furthermore, the TrkB-dependent calcium release requires PLC activity... signalling, we performed an epistatic ... Source: Amaya, Enrique - Healing...

242

E-Print Network 3.0 - active volcanic features Sample Search...  

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enormous Jurassic--Cretaceous volcanic activity, CretaceousJurassicPermian andesite Permian metasediment... of Mesozoic volcanic rocks in the Songliao basin, NE China PU-JUN...

243

E-Print Network 3.0 - active organosulfur compounds1woa Sample...  

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-added products (e.g., activated carbon and carbon black). In their process, char upgrading is implemented Source: Columbia University - Waste-to-Energy Research and...

244

E-Print Network 3.0 - activated carbons produced Sample Search...  

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United States Department of Summary: as qualifying carbon offset activities in existing markets and regis- tries. Forest carbon projects... straightforward way to sequester...

245

E-Print Network 3.0 - activated carbon produced Sample Search...  

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United States Department of Summary: as qualifying carbon offset activities in existing markets and regis- tries. Forest carbon projects... straightforward way to sequester...

246

E-Print Network 3.0 - alkaliphilic esterase active Sample Search...  

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with the most active, relevant consortia for novel enzyme and pathway discovery 148 Bioenerg. Res. ... Source: Hazen, Terry - Earth Sciences Division, Lawrence Berkeley National...

247

E-Print Network 3.0 - active hexose correlated Sample Search...  

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search results for: active hexose correlated Page: << < 1 2 3 4 5 > >> 1 Journal of Biotechnology 77 (2000) 4964 Relevance and isotopic assessment of hexose-6-phosphate Summary: ,...

248

E-Print Network 3.0 - active transport advocate Sample Search...  

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1) The survivor, not the advocate, should guide the direction and activities of the intervention... . This does not mean the advocate is not ... Source: Liu, Taosheng -...

249

E-Print Network 3.0 - activity plant growth Sample Search Results  

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<< < 1 2 3 4 5 > >> 1 Plant Tissue Culture Venus Flytrap: Dionaea muscipula Summary: of fruit 2. Cytokinin (kinetin) Activation of cell division and regulation of plant growth...

250

E-Print Network 3.0 - activation promotes anti-thrombotic Sample...  

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). Previously, biologically active com- pounds were either direct by-products of the pharmaceutical industry Source: Crews, Craig M. - Department of Molecular Biophysics and...

251

E-Print Network 3.0 - adenylate kinase activity Sample Search...  

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kinase controls the conversion... of AMP into ADP and modifies the ratios of AMP to ATP, adenylate kinase activity therefore plays... DNA and Gene for the Arabidopsis thaliana...

252

E-Print Network 3.0 - activities fostering fear Sample Search...  

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of Emotion Catherine A Hartley1 Summary: as means to control fear: extinction, cognitive regulation, active coping, and reconsolidation. For each... a fear response. In...

253

E-Print Network 3.0 - active surveillance procedures Sample Search...  

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Sciences 31 Review of Chronic Wasting Disease Management Policies and Programs in Colorado Summary: . Surveillance and management activities are inseparable, because...

254

E-Print Network 3.0 - activation physiological roles Sample Search...  

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11. Role of GABAA receptors in modulating dendritic activity in collaboration with Kaspar Vogt... of Physiology, University of Bern, Switzerland Personal Date of Birth: 2 May, 1967...

255

E-Print Network 3.0 - active walk model Sample Search Results  

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transition in human gait from walking to running as walking speed Summary: the ankle plantar flexors. Despite an increase in muscle activation with walking speed, the...

256

E-Print Network 3.0 - active process requiring Sample Search...  

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invoking a service that a process activity requires, receiving the result after... -oriented architecture, services and business processes are typically integrated by invoking...

257

E-Print Network 3.0 - active dashgil mud Sample Search Results  

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Summary: acquired in an active North American gas field. Layer-by-layer values of porosity and permeability were... . The wells were drilled with different muds and...

258

E-Print Network 3.0 - active human promoters Sample Search Results  

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dem- less ... Source: Collection: Biology and Medicine 8 University of Toronto Governing Council Summary: of International Projects, Agreements, and Other International Activity...

259

E-Print Network 3.0 - activity indicator model Sample Search...  

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on the GUI. The pur- pose of this work is to explore how... observation streams from sensors, activities can be ... Source: Modayil, Joseph - Department of Computing Science,...

260

E-Print Network 3.0 - activated sludge wastewater Sample Search...  

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Activated Sludge ... Source: Gelt, Joe - Water Resources Research Center, College of Agriculture, The University of Arizona Collection: Renewable Energy 2 Impact of EPS on...

Note: This page contains sample records for the topic "activity water-gas samples" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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261

E-Print Network 3.0 - activates dna polymerase Sample Search...  

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DNA polymerases has under-gone a striking expansion in the past decade. Since Summary: primer terminus on the -phosphorus105 . In vitro assays for DNA polymerase activity...

262

E-Print Network 3.0 - activation analysis determinacao Sample...  

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Modelos Hierarquicos Generalizados sob Planos Amostrais Summary: :www.visgraf.impa.brProjectsvirtualsetpage04.html 2.17 - http:www-cui.darmstadt.gmd.devisitActivities...

263

E-Print Network 3.0 - atmospheric electrical activity Sample...  

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September 13, 2009 Curbing mercury emissions is crucial Summary: activities, with coal-fired power plants contributing the largest source of mercury to the atmosphere... the...

264

E-Print Network 3.0 - active-assisted stretching program Sample...  

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therapeutic approach to improve arm... restraint. Robotic therapy devices could help implement such treatment by providing active assist exercise... . The principle of...

265

E-Print Network 3.0 - active set algorithm Sample Search Results  

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activation algorithms in this evaluation, and a set... algorithm the ... Source: Shapiro, Stuart C. - Department of Computer Science and Engineering, State University of...

266

E-Print Network 3.0 - antimicrobial activities targeting Sample...  

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activities targeting Page: << < 1 2 3 4 5 > >> 1 Tenure-Track Positions Community Hospital Antimicrobial Stewardship Summary: Tenure-Track Positions Community Hospital...

267

E-Print Network 3.0 - adapted physical activity Sample Search...  

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their daily amount of physical activity. Give ... Source: Wilkins, Neal - Institute of Renewable Natural Resources & Department of Wildlife and Fisheries Sciences, Texas A&M...

268

E-Print Network 3.0 - accessibility activity participation Sample...  

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safety or health issue; 4) There is need for an intellectual property class waiver; 5) The activity... companies and foreign governments (hereinafter, individually...

269

E-Print Network 3.0 - androgen transcriptional activation Sample...  

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to activate calling. Somewhat... Courtship Androgen Estrogen Steroids Central pattern generator CPG Larynx a b s t r a c t Seasonal courtship... by hormones, typically during...

270

E-Print Network 3.0 - activated sludge removing Sample Search...  

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and Technology Council (WTERT) Collection: Renewable Energy 8 Selective hydrolysis of wastewater sludge Part 1, September 2007 Summary: on the activated sludge process...

271

E-Print Network 3.0 - activated sludge bacterial Sample Search...  

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for: activated sludge bacterial Page: << < 1 2 3 4 5 > >> 1 Selective hydrolysis of wastewater sludge Part 1, September 2007 Summary: is a traditional build plant base don...

272

E-Print Network 3.0 - active antiretroviral chemotherapy Sample...  

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between an activated and latent state results in the typical decelerating decay of virus load following Source: Utrecht, Universiteit - Departement Biologie, Theoretical Biology...

273

E-Print Network 3.0 - activate hormone-sensitive lipase Sample...  

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activity is found to be highest towards more water soluble substrates. ... Source: Groningen, Rijksuniversiteit - Centre for Ecological and Evolutionary Studies, Department of...

274

E-Print Network 3.0 - active power method Sample Search Results  

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and Nonlinear Loads Jos Mahomar, Luis Morn... active power filters. The algorithm is proved by simulation in a multibus industrial power distribution... system and...

275

E-Print Network 3.0 - active galaxy demography Sample Search...  

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... Source: Arcetri Osservatorio Astrofisico di (Italy), Collection: Physics 9 Nature Review The role of black holes in galaxy formation and evolution Summary: activity50,51 . The...

276

E-Print Network 3.0 - active filter system Sample Search Results  

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One of them is the use of a combined system of shunt passive filters and series... load power, reducing costs and increasing overall system efficiency 4. Series active...

277

E-Print Network 3.0 - activity predicts responsiveness Sample...  

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Northwestern University Collection: Biology and Medicine 29 PREDICTING RESOURCE DEMAND IN HETEROGENEOUS ACTIVE NETWORKS V. Galtier, K. Mills, and Y. Carlinet Summary: 1...

278

E-Print Network 3.0 - active trial operation Sample Search Results  

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Sciences 4 COGNITIVE NEUROSCIENCE Role of the basal ganglia in switching a planned response Summary: from frontal eye fields, an area shown to be more active for antisaccade...

279

E-Print Network 3.0 - activity trial adapt Sample Search Results  

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Biology and Medicine 6 Running Head: CONFLICT ADAPTATION FOLLOWING ERRONEOUS RESPONSE PREPARATION Summary: (Botvinick et al., 2001). Reduced ACC activation (sometimes...

280

E-Print Network 3.0 - active methylene compounds Sample Search...  

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spectrum from an analogous deuterated compound. Introduction... active dyes at the oil- water interface using fluorescence,3,4 resonance Raman scattering,5-7 and second... to...

Note: This page contains sample records for the topic "activity water-gas samples" 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.
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to obtain the most current and comprehensive results.


281

E-Print Network 3.0 - activated microglia antioxidative Sample...  

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the number of activated microglia within... -methyl-d-aspartate (NMDA) receptors by memantine can reduce ... Source: Wenk, Gary - Departments of Psychology & Neuroscience, Ohio...

282

E-Print Network 3.0 - active living study Sample Search Results  

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RH 21% Summary: All double rooms Community Based Living (CBLV): West College: Political Activism and Artistic... % Where will I end up? Below is a snapshot of where the...

283

E-Print Network 3.0 - activities reductionism emergence Sample...  

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activities reductionism emergence Page: << < 1 2 3 4 5 > >> 1 TESTIMONY, EPISTEMOLOGY OF J. Adam Carter & Duncan Pritchard Summary: important defence of non-reductionism which...

284

E-Print Network 3.0 - activation induces type Sample Search Results  

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experiments. The radioactivity from activated short... this need, we have ... Source: Danon, Yaron - Department of Mechanical, Aerospace and Nuclear Engineering, Rensselaer...

285

E-Print Network 3.0 - active carbon process Sample Search Results  

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; Activated carbon; Carbon fibers; D. Electrical (electronic) properties Electromagnetic interference (EMI... in the composites is typically that ... Source: Chung, Deborah D.L....

286

E-Print Network 3.0 - activated carbon chemically Sample Search...  

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; Activated carbon; Carbon fibers; D. Electrical (electronic) properties Electromagnetic interference (EMI... in the composites is typically that ... Source: Chung, Deborah D.L....

287

E-Print Network 3.0 - activated carbon treatment Sample Search...  

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; Activated carbon; Carbon fibers; D. Electrical (electronic) properties Electromagnetic interference (EMI... in the composites is typically that ... Source: Chung, Deborah D.L....

288

E-Print Network 3.0 - activated carbon particles Sample Search...  

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; Activated carbon; Carbon fibers; D. Electrical (electronic) properties Electromagnetic interference (EMI... in the composites is typically that ... Source: Chung, Deborah D.L....

289

E-Print Network 3.0 - activated carbon process Sample Search...  

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; Activated carbon; Carbon fibers; D. Electrical (electronic) properties Electromagnetic interference (EMI... in the composites is typically that ... Source: Chung, Deborah D.L....

290

E-Print Network 3.0 - amine oxidase activity Sample Search Results  

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performance for methanol... nanotube layers with WO"3 nanocrystals for high- electrochromic activity Short communication Source: Aksay, Ilhan A. - Department of Chemical...

291

E-Print Network 3.0 - active region model Sample Search Results  

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Collection: Physics 72 The main rationale In the 21st Summary: development in the ASEAN region. Chapter 3: The Space Activities of ASEAN Countries investigates the...

292

E-Print Network 3.0 - active regions based Sample Search Results  

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based on the concept of international cooperation. In order... development in the ASEAN region. Chapter 3: The Space Activities of ASEAN Countries investigates the...

293

E-Print Network 3.0 - activities bon voyage Sample Search Results  

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that Voyager is seeing activity upstream of the shock... Relation between the solar wind dynamic pressure at Voyager 2 and the energetic particle events... at Voyager 1...

294

E-Print Network 3.0 - aldosterone renin activity Sample Search...  

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Angiotensin II and Aldosterone Increase with Fasting in Breeding Adult Male Northern Elephant Seals (Mirounga angustirostris) Summary: renin activity (PRA), an indicator of...

295

E-Print Network 3.0 - activated carbon pac Sample Search Results  

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; Engineering 55 Letters to the editor Carbon 40 (2002) 445467 447 using continuous carbon-fiber carbon-matrix and polymeruntreated fibers are used. The activation treatment...

296

E-Print Network 3.0 - activity maintenance study Sample Search...  

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results for: activity maintenance study Page: << < 1 2 3 4 5 > >> 1 Innovative Contracting Strategies forInnovative Contracting Strategies for Transportation...

297

E-Print Network 3.0 - active gilbert cell Sample Search Results  

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Cell Technology Abstract Significant interest... and attention have been given to the innovation activity occurring within geographic cluster regions. Despite Source: Lin,...

298

E-Print Network 3.0 - activation depresses synaptic Sample Search...  

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In this model, syn- aptic... ; activity-dependent scaling; temporal learning; stochas- tic approaches ... Source: Bi, Guo-Qiang - Department of Neurobiology, University of...

299

E-Print Network 3.0 - aroma active compounds Sample Search Results  

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

val- ue, to characterize odor-active strawberry aroma compounds (Latrasse 1991... - tic odors and several are ... Source: Tang, Juming - Department of Biological Systems...

300

E-Print Network 3.0 - activating integrin alphavbeta3 Sample...  

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123, 146. Together, these studies suggest that actin dynamics actively induce heart tube looping... , and integrins, respectively. The cytoskeleton remodels its architecture with...

Note: This page contains sample records for the topic "activity water-gas samples" 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.
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to obtain the most current and comprehensive results.


301

E-Print Network 3.0 - active cognitive training Sample Search...  

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

search results for: active cognitive training Page: << < 1 2 3 4 5 > >> 1 Healthy Brain Aging: Role of Cognitive Reserve, Cognitive Stimulation, and Cognitive Exercises...

302

E-Print Network 3.0 - active mri implants Sample Search Results  

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

interested in participating Summary: while lying inside the MRI scanner as your brain activity is being monitored 2hrs. 1 Computer Studies 2... brains process certain...

303

E-Print Network 3.0 - activate genetic pathways Sample Search...  

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

Sciences and Ecology ; Biology and Medicine 15 The successful completion of the Human Genome Project depended crucially on the integration of genetic Summary: to activate...

304

E-Print Network 3.0 - activation switch macs-index Sample Search...  

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Optical Summary: quadratically with switching node degree when active optoelectronic devices are used as switching elements 2... is presented. Because of the high cost of...

305

E-Print Network 3.0 - actively cooled resonators Sample Search...  

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ring lasers and passive ring resonator coupled... is temperature stabilized with a Peltier cooler. An active ... Source: Collection: Engineering ; Energy Storage, Conversion...

306

E-Print Network 3.0 - activeness physical fitness Sample Search...  

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Area... based on sign up. Physical activity has inherent risks. For ... Source: Saskatchewan, University of - Department of Physics and Engineering Physics, Plasma Physics...

307

E-Print Network 3.0 - activity policy environments Sample Search...  

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results for: activity policy environments Page: << < 1 2 3 4 5 > >> 1 University of Saskatchewan Policy on Development, Approval and Administration of University Policies Summary:...

308

E-Print Network 3.0 - active n-terminal kinase Sample Search...  

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activation requires... p42 MAP kinase function. We have reconstitu- ... Source: Ferrell Jr., James E. -Departments of Chemical and Systems Biology & Biochemistry, Stanford...

309

E-Print Network 3.0 - activated human monocytes Sample Search...  

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of proinflammatory cytochemokines... , and Vijay K. Kalra Monocytes from patients with sickle cell disease (SCD) are in an activated state. However... , the mechanism of...

310

E-Print Network 3.0 - activity trend estimates Sample Search...  

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Collection: Computer Technologies and Information Sciences 48 Driving forces of global wildfires over the past millennium and the forthcoming century Summary: activity trends...

311

E-Print Network 3.0 - activation regulate fiv Sample Search Results  

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Series Summary: -like activating enzyme UbaA in Haloferax volcanii Daniel Dixon Ionic and pH regulation in the mosquito larvae... -1 reverse transcriptase evolutionary conserved...

312

E-Print Network 3.0 - active sites environmental Sample Search...  

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Ecology 24 carleton.ca Environmental Programs Summary: with mining and remediation activities. In third or fourth year, an optional practicum course, Environmental......

313

E-Print Network 3.0 - activity patterns govern Sample Search...  

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in real-world government service data for government debt prevention in an Aus... activities, and the impact of customers on ... Source: Cao, Longbing - Faculty of Information...

314

E-Print Network 3.0 - agent acetyl-l-carnitine activates Sample...  

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Aging and Disease Collection: Biology and Medicine 18 AREA OVERVIEW----Agent & Data Mining Interaction Summary: publication Research groups Research projects Relevant activities...

315

E-Print Network 3.0 - alberta physical activity Sample Search...  

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Information Sciences 12 ACADEMIC PLAN 20112015 daretodeliver Summary: and creative activities at the University of Alberta with the same enthusiastic spirit of innovation and...

316

E-Print Network 3.0 - activity based analysis Sample Search Results  

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Sciences 4 Reasoning about Repairability of Workflows at Design Time Summary: activities can be provided by the workflow designer based on the analysis of different aspects...

317

E-Print Network 3.0 - aggravating activities clinical Sample...  

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a look at Summary: and to defend their territories against transnational corporate activities. Corporate dams have flooded vast... most aggravated the Mapuche conflicts,...

318

E-Print Network 3.0 - active chile ridge Sample Search Results  

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

FORESTS: CONSERVING A GLOBAL TREASURE FRONTIER FORESTS Summary: of GFW-Chile activities and partners in Chile. GFW-Chile would also like to thank the Environmental......

319

E-Print Network 3.0 - actively growing ataxia Sample Search Results  

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Progress in Brain Research, Vol. 140 Summary: technologies for recording high- speed activities like saccades are relatively new. De- tailed studies of hand... laboratory has found...

320

E-Print Network 3.0 - anti-infective activity screening Sample...  

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

activity (original budget, ... Source: Hawaii Natural Energy Institute Collection: Renewable Energy 50 MOLECULAR AND CELLULAR BIOLOGY, Apr. 2010, p. 17181728 Vol. 30, No. 7...

Note: This page contains sample records for the topic "activity water-gas samples" from the National Library of EnergyBeta (NLEBeta).
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321

E-Print Network 3.0 - active region spectra Sample Search Results  

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

de Madrid, Dpt. de Astrofsica, Facultad C.C. Fsicas, Madrid, Spain, dmg@astrax.fis.ucm.es, Summary: -infrared indicators of chromospheric activity. The spectra have been...

322

E-Print Network 3.0 - active personnel dosemeters Sample Search...  

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Lists of staff... radioactivity 17 3.2. Uptake and loss of certain transuranium-, fis- sion- and activation nuclides by Mytilus Source: Ris National Laboratory Collection:...

323

E-Print Network 3.0 - active mode control Sample Search Results  

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Summary: simple features have few features active Jan Bredereke: On Preventing FIs which are Shared-Control Mode... On Preventing Telephony Feature Interactions which are...

324

E-Print Network 3.0 - activation requires mitochondrial Sample...  

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is required for fission activity41 . The recruitment of Dnm1 to yeast mitochondrial fis- sion... . Mitochondrial trans- port is required to distribute mitochondria throughout...

325

E-Print Network 3.0 - actively building private Sample Search...  

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14th EAERCD Conference Summary: is determinant to identify what sources can build retail brand equity because they actively participate... stores and private labels - Proposition...

326

E-Print Network 3.0 - active tracheal ventilation Sample Search...  

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et al., 1994). Late stage embryos were fixed and stained for tracheal... p activity (Brand et al., 1994) and it reduced the penetrance of ... Source: Krasnow, Mark A. -...

327

E-Print Network 3.0 - activation repairs endothelial Sample Search...  

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a chloride-selective membrane current in vascular endothelial cells... stress-induced ion channel activation in vascular endothelial ... Source: Barakat, Abdul - Department of...

328

E-Print Network 3.0 - activity gastric emptying Sample Search...  

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increase vagal afferent activation. The effect of CCK, but not gastric... infusion or intraperitoneal injection of CCK produced dose-dependent increases in the ......

329

E-Print Network 3.0 - augmented nk activity Sample Search Results  

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

to Tumor Metastasis in Summary: reported augmentation of NK activity following infusion of adrenaline (14-16, 27). Although species... implicated in mediating stress-induced...

330

E-Print Network 3.0 - activity addressing transmissible Sample...  

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

conceivably take... of such active bidding: to provide ap- propriate ... Source: Baldick, Ross - Department of Electrical and Computer Engineering, University of Texas at Austin...

331

E-Print Network 3.0 - activity recorded simultaneously Sample...  

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

Summary: corresponding to the gait periods were segmented from the full record, and a standard voice activity detection... simultaneously in patients with Alzheimer's disease...

332

E-Print Network 3.0 - activates toll-like receptor Sample Search...  

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

in St. Louis Collection: Biology and Medicine 63 From secretome analysis to immunology: Chitosan induces major alterations in the activation of dendritic cells via a...

333

E-Print Network 3.0 - activation decay heat Sample Search Results  

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h 1 in the dark... . Filtration reduced decay rates by various amounts, averaging 20%. Heat-labile, high... the loss of active degradative materials incurred by ... Source:...

334

E-Print Network 3.0 - activation energy distribution Sample Search...  

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and Information Sciences 68 Ratepayer-Funded Energy-Efficiency Programs in a Restructured Electricity Summary: Private-Sector Energy-Efficiency Activities... a utility's past...

335

E-Print Network 3.0 - active microwave medium Sample Search Results  

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

MA: Artech House, 1981... . 41 F. Ulaby, R. Moore, and A. K. Fung, Microwave Remote Sensing: Active and Passive, vol. 3. Norwood... Sat Passive Microwave Polarimetric...

336

E-Print Network 3.0 - activation element exerting Sample Search...  

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activities, in particular, greenhouse gases... and application of comprehensive Earth system models. 13 - Elements of linear detection theory: EOFs of natural Source: Black,...

337

E-Print Network 3.0 - acid chaperone activity Sample Search Results  

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they up-regulate ER-resident chaperones and other enzymatic activities to augment protein folding... with the help of chaperones. A sudden increase in unfolded proteins, a...

338

E-Print Network 3.0 - active vibration reduction Sample Search...  

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been used successfully in various applications... for this application. The operating principle of an active mass ... Source: Huston, Dryver R. - School of Engineering, University...

339

E-Print Network 3.0 - activated carbon-based adsorbents Sample...  

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two primary elements, the filter media (activated carbon or lignite coke) to adsorb pollutants... in that Marker's past experience has been that Hg capture with carbon or carbon...

340

E-Print Network 3.0 - activation analysis body Sample Search...  

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. Such findings provide support for an active role of body representations in the processes underlying the RHI... 1 Body mereology F. de Vignemont, M. Tsakiris and P....

Note: This page contains sample records for the topic "activity water-gas samples" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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341

E-Print Network 3.0 - active transalveolar albumin Sample Search...  

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adenosine 3,5-monophosphate CCRC cumulative... factor GAP GTPase-activating protein GDI guanine dissociation inhibitor GEF guanine exchange factor GM Source: Groningen,...

342

E-Print Network 3.0 - activating factor ddt-insensitive Sample...  

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

of abbreviations List of abbreviations Summary: factor GAP GTPase-activating protein GDI guanine dissociation inhibitor GEF guanine exchange factor GM... List of abbreviations...

343

E-Print Network 3.0 - audit planning activities Sample Search...  

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

Investment Activities R R R Data Mining Software Packages (ACL, Excel, SQL) R R R... Recovery and Contingency ... Source: Noakes, David R. - Department of Chemistry and...

344

E-Print Network 3.0 - activation molecule mrna Sample Search...  

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Center Houston Collection: Biology and Medicine 14 Special Issue Imaging Cell Biology A single molecule view of gene Summary: these differences has thus become an area of active...

345

E-Print Network 3.0 - activates junctional endocytosis Sample...  

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). Monitoring clathrin-mediated endocytosis during synaptic activity. Wiseman, T., Williston, S., Brandts, J... of endocytosis at the synapse was first measured directly by ......

346

E-Print Network 3.0 - active lubricated multirecess Sample Search...  

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MICRO-ASSEMBLY VIA ELECTROCHEMICAL MODULATION OF SURFACE ENERGY Summary: the hydro- phobicity of the binding sites between micro-parts and substrates. Active assembly...

347

E-Print Network 3.0 - activity measurement developpement Sample...  

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Page: << < 1 2 3 4 5 > >> 1 Developpement WebIntroduction generale Developpement Web Summary: , Microsoft Server, ActiveX, .NET, ASP, VBScript, C, Access 45 58...

348

E-Print Network 3.0 - activity choices Sample Search Results  

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... Validation choice Applic. Index Application... units ... Validation choice Applic. Index Application Activity"B" W a) b) If true If true false false pages... End...

349

E-Print Network 3.0 - antioxidant activity oxidative Sample Search...  

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Quantification of antioxidant activity in brain tissue homogenates using the total equivalent... Elsevier Science B.V. All rights reserved. Keywords: Antioxidant;...

350

E-Print Network 3.0 - active filter compensator Sample Search...  

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TRANSACTIONS ON POWER ELECTRONICS, VOL. 17, NO. 1, JANUARY 2002 A New Hybrid Active Power Filter (APF) Topology Summary: topology is capable of compensating for the load...

351

E-Print Network 3.0 - actively inflamed liver Sample Search Results  

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Diverse Roles of Invariant Natural Killer T Cells in Liver Injury and Fibrosis Induced by Carbon Tetrachloride Summary: injection of iNKT activator -galactosylceramide ( -GalCer)...

352

E-Print Network 3.0 - activation analysis estudo Sample Search...  

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Dinmica Espacial SER-410-3 Processamento... , A Microwave remote sensing: active and passive. Boston, MA: Artech House, 1981. v.13. Warner, T.A.; Nellis, M... .; Collins,...

353

E-Print Network 3.0 - amphibolite rock-weathering activity Sample...  

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Centre de mathmatiques Collection: Mathematics 20 Phase-equilibrium constraints on titanite and rutile activities in mafic epidote amphibolites and geobarometry using...

354

E-Print Network 3.0 - activating factor-stimulated human Sample...  

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factor mediated activation of mTOR is deregulated in human cancer... , Schaffhausen B, Pallas DC, White M, Cantley L, Roberts TM. Common elements in growth factor stimulation... ,...

355

E-Print Network 3.0 - activated porcine embryos Sample Search...  

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and Physiology Part C 136 (2003) 357365 1532-045603 -see front matter 2003 Elsevier Inc. All rights reserved. Summary: . 5. Anti-factor Xa activity of commercial porcine...

356

E-Print Network 3.0 - activation prevents behavioral Sample Search...  

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30 Published by the IEEE Computer Society 1089-78011026.00 2010 IEEE IEEE INTERNET COMPUTING Summary: to in the control behavior -- such as activated in Fig- ure 1c --...

357

E-Print Network 3.0 - ace inhibitory activity Sample Search Results  

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ace inhibitory activity Page: << < 1 2 3 4 5 > >> 1 Angiotensin-(1-7) with thioether-bridge: an angiotensin-converting enzyme-resistant, potent Angiotensin-(1-7) analogue...

358

E-Print Network 3.0 - active sers substrate Sample Search Results  

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INS OF SCI & TECH Journal of the American Chemical Society is published by the American Chemical Summary: Nanowire on a Film as an Efficient SERS-Active Platform Ilsun Yoon,...

359

E-Print Network 3.0 - alpha ligands activate Sample Search Results  

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256, 201213 The Automatic Search for Ligand Binding Sites in Summary: CPA, 4CPA, 5CPA, alpha-amylase 6TAA) their binding location was predicted as a part of the active site......

360

E-Print Network 3.0 - active vertical fin Sample Search Results  

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Summary: active to tilt the caudal fin at an angle to the vertical 26. In some fish, especially those known... . Low-aspect ratio pectoral fins in sharks function to alter...

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361

E-Print Network 3.0 - acid o-methyltransferase activity1 Sample...  

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activity1 Page: << < 1 2 3 4 5 > >> 1 Caffeoyl coenzyme A O-methyltransferase and lignin biosynthesis Zheng-Hua Yea, Summary: lignin units. Caffeic acid O-methyltransferase...

362

E-Print Network 3.0 - active galactic nuclear Sample Search Results  

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Pulsars... you'd . . . Active Galactic . . . X-ray binaries Pulsars and relatives Gamma-ray bursts Gravitational... 2 of 36 Go Back Full Screen Close Quit 1. Introduction to the...

363

E-Print Network 3.0 - active galactic nucleus Sample Search Results  

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Pulsars... you'd . . . Active Galactic . . . X-ray binaries Pulsars and relatives Gamma-ray bursts Gravitational... 2 of 36 Go Back Full Screen Close Quit 1. Introduction to the...

364

E-Print Network 3.0 - active intracellular trafficking Sample...  

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of the tilapia... CaRs point to a juxtamembrane a-helical segment (G protein-mediated PLC and MAPK cascade activation Source: Loretz, Christopher A.- Department of Biological...

365

E-Print Network 3.0 - activated ras signalling Sample Search...  

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Collection: Biology and Medicine 5 R342 Dispatch Ras effectors: Buying shares in Ras plc Summary: . In this state, Ras is consti- tutively active and can transmit signals for...

366

E-Print Network 3.0 - activating inhibitory muscarinic Sample...  

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to the increased firing activity, closure can PIP2 K+ X agonistM1-mAChR Gq PLC DAG IP3 PIP2 A B C muscarine 3 min1... Postsynaptic inhibitory action and K+ current...

367

E-Print Network 3.0 - active earth pressure Sample Search Results  

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a,b Summary: is a COLLADA (COLLAborative Design Activity) model supported by Google's SketchUp tool and Google Earth. 3D... it into Google Earth for display. COLLADA is for...

368

E-Print Network 3.0 - activates neu4 sialidase Sample Search...  

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the active site. 2008 Elsevier Ltd. All rights... liver sialidase inhibitor (IC50 40 lM).11 Based upon this and subsequent cell-culture results some... , have glycosidase...

369

E-Print Network 3.0 - activated reactive evaporation Sample Search...  

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consists... of a microporous carbon with a surface area, after activation with carbon dioxide, of ca. 700 m2 g-'. Here, we Source: Harris, Peter J F - Centre for Advanced...

370

E-Print Network 3.0 - activate multiple p2x Sample Search Results  

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Summary: a role for the P2X2 receptor subunit in mediating multiple sensory effects of ATP Debra A. Cockayne1... properties. P2X3 receptors are rapidly desensitizing, activated...

371

E-Print Network 3.0 - activity modulates recovery Sample Search...  

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Page: << < 1 2 3 4 5 > >> 1 When Good Comms Go Bad: Communications Recovery For Multi-Robot Teams Summary: component is the failure history module, which contains activation...

372

E-Print Network 3.0 - activation downregulates akt Sample Search...  

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for: activation downregulates akt Page: << < 1 2 3 4 5 > >> 1 Tumor and Stem Cell Biology Akt2 Regulates All Akt Isoforms and Promotes Resistance to Summary: deprivation, Akt2...

373

E-Print Network 3.0 - activates apical cl- Sample Search Results  

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alone do not account for barrier function Summary: activities and protein content. CaCl2 was added to a final concentration of 30 mM, and after 15 min on ice... for the...

374

E-Print Network 3.0 - activates crac channels Sample Search Results  

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and Medicine 16 Supplementary Table 1. Solutions for whole-cell recording Name NaCl CaCl2 MgCl2 Glucose HEPES Summary: activates Ca2+ influx through CRAC channels in S2 cells....

375

E-Print Network 3.0 - activity supports anaerobic Sample Search...  

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Summary: of landfill activity; this is intuitive and supports the legitimacy of the EIO- LCA approach. Note that 100... Life-Cycle Analysis of Energy and Greenhouse Gas Emissions...

376

E-Print Network 3.0 - aspirin esterase activity Sample Search...  

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-- an active drug and a placebo, for example... aspirin daily can reduce the risk of heart attack needs to take account of the facts that, independent... be 100% certain that...

377

E-Print Network 3.0 - active 32p-labeled human Sample Search...  

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A Are Necessary for Selective Recognition and Summary: 236E N-term and 32 P-labeled SNV PCE. RHA Translation Activity on Selected Viral and Cellular m... (1) with recombinant...

378

E-Print Network 3.0 - activator protein-1 deficiency Sample Search...  

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not require... -response gene, named vitamin D3 upregu- lated protein 1 (VDUP-1) in the induction of CD122 expression has been... functional activity similar to that of the NK...

379

E-Print Network 3.0 - activation radio Sample Search Results  

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

AND DATA RADIOS Jessica Feng Summary: , a number of data radios that have been in active listening mode. In general, this radio is power... POWER MINIMIZATION BY SEPARATION OF...

380

E-Print Network 3.0 - activation-induced t-cell death Sample...  

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activation-induced t-cell death Page: << < 1 2 3 4 5 > >> 1 insight review articles NATURE | VOL 407 | 12 OCTOBER 2000 | www.nature.com 789 Summary: -autonomous Fas (CD95)...

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381

E-Print Network 3.0 - activities carbonic anhydrase Sample Search...  

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Inc. All rights reserved. PII S1095-6433(97)00439-X Summary: .C.; Ruzicka, C.A.; Sly, W.S. Pul-carbonic anhydrase activity. J. Appl. Physiol. 55:75-83; 1983. monary... H: A...

382

E-Print Network 3.0 - active ion transport Sample Search Results  

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gases,2-6 or in the active... , oscillations in the electric field are damped in the bulk plasma and ion transport is governed by ion drift... , these oscillations are damped...

383

E-Print Network 3.0 - active region evolution Sample Search Results  

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56 The main rationale In the 21st Summary: on the evolution and recent status of the ASEAN Organization and its space activities for enhancing sustainable... development in the...

384

E-Print Network 3.0 - activated cerebral blood Sample Search...  

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cerebral blood Page: << < 1 2 3 4 5 > >> 1 2 Basic Anatomy and Physiology of the Human Brain Summary: and bacterial substances and, through the activity of its sweat glands and...

385

E-Print Network 3.0 - activity-dependent bulk endocytosis Sample...  

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results for: activity-dependent bulk endocytosis Page: << < 1 2 3 4 5 > >> 1 VESICLE RECYCLING AT RIBBON SYNAPSES IN THE FINELY BRANCHED AXON TERMINALS OF MOUSE RETINAL BIPOLAR...

386

E-Print Network 3.0 - activated gaas surface Sample Search Results  

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Collection: Materials Science 8 Dissimilar and Nanomaterials for Optoelectronic Devices Summary: ) on GaAs Diluted-N-based QW Sb-based QW (GaInNAsSb) QD-based active...

387

E-Print Network 3.0 - activity recall par Sample Search Results  

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results for: activity recall par Page: << < 1 2 3 4 5 > >> 1 Recall termination in free recall Michael J. Kahana, Jonathan F. Miller, and Christoph T. Weidemann Summary: , one...

388

E-Print Network 3.0 - acetyl transferase activity Sample Search...  

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activity Page: << < 1 2 3 4 5 > >> 1 In Vivo Acetylation of CheY, a Response Regulator in Chemotaxis of Escherichia coli Summary: involving, for example, an unknown...

389

E-Print Network 3.0 - alk enzymatic activity Sample Search Results  

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enzymatic activity Page: << < 1 2 3 4 5 > >> 1 Activin B receptor ALK7 is a negative regulator of pancreatic -cell function Summary: . 5C), suggesting that ALK7 is not required...

390

E-Print Network 3.0 - active fe-n epsilon Sample Search Results  

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in PEM fuel cell conditions: Heat-treated macrocycles and beyond Summary: : A ToF SIMS abundance : o FeN2C and FeN4C B RDE catalytic activity C Number... of transferred...

391

E-Print Network 3.0 - activities improved water Sample Search...  

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4 5 > >> 1 Water Resources Water Quality and Water Treatment Summary: to the states for rural water supply and sanitation activities. Ministry of Agriculture (MoA) is involved......

392

E-Print Network 3.0 - alters methyltransferase activity Sample...  

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activity on substrates that included calf thymus histones H2A and H4 as well as myelin basic... protein 12. However, later studies were not able to detect ......

393

E-Print Network 3.0 - active vibration control Sample Search...  

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procedures were programmed in the control system of the vibrator... ,22,25) the transmissibility of vibration is affected by body posture,(17-19,21,25) muscle activity,(26,27)...

394

E-Print Network 3.0 - ahr transcriptional activity Sample Search...  

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are Summary: -A1 and UGT1-06 (1, 2). In response to halogenated- dibenzo-p-dioxins, AHR activation results... of recombinant Ahr and Arnt alleles, we have shown that...

395

E-Print Network 3.0 - activate mapks ap-1 Sample Search Results  

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j.cub.2010.01.019 MAPK Substrate Competition Summary: on transcriptional activity of Bcd and provide evidence suggesting that Bcd, a direct substrate of MAPK, decreases... of...

396

E-Print Network 3.0 - active methylene groups Sample Search Results  

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groups Page: << < 1 2 3 4 5 > >> 1 Experimental study and modeling of basic dye sorption by diatomaceous clay Summary: blue, S is the active surface of diatomite, and MB.S is...

397

E-Print Network 3.0 - active integrated antenna Sample Search...  

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In this paper, an active integrated antenna using a T- shaped microstrip coupled patch... .interscience.wiley. com). DOI 10.1002mop.20658 Key words: T-shaped microstrip;...

398

E-Print Network 3.0 - activate multiple types Sample Search Results  

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at Kent Validating BPEL Specifications Summary: Handler 0..1 OnMessage PortType (f rom wsdl) PartnerLink Operation (f rom wsdl) PartnerActivity 11 0..* 1 0... name clashes...

399

E-Print Network 3.0 - active-sterile neutrino oscillations Sample...  

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

Collection: Physics 8 arXiv:hep-ph0608147v113Aug2006 NUHEP-TH06-06 Neutrino Phenomenology of Very Low-Energy Seesaws Summary: by the addition of active-sterile neutrino...

400

E-Print Network 3.0 - active vibration isolation Sample Search...  

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Control Conference... , June 30-July 2, 2004. 27. Lei Zuo and Samir Nayfeh, An Active-Passive Stage for Vibration Isolation... Engineering, March 2004. 29. Lei Zuo and Samir...

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401

E-Print Network 3.0 - activation analysis principles Sample Search...  

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4 5 1 emerging Principles: The U of R Campus will 12;Actively lead... May 11, 2010 Open House Presentation 12;where we re at consolidated outcomes: vision ... Source: Argerami,...

402

E-Print Network 3.0 - active surveillance study Sample Search...  

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systems... 15. Vogt RL , LaRue D , Klaucke DN , Jillson DA Comparison of an active and passive surveillance... Euro Surveill. Author manuscript Page 1 9 Survey of European...

403

E-Print Network 3.0 - activated zinc sulfide Sample Search Results  

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the Initial Reports and Scientific Results portions of Vol- Summary: -14 active zones, geology, A:18-19 age sulfides, B:111-117 vs. uranium content, B:113-114 alteration...

404

Investigation of Effects of Coal and Biomass Contaminants on the Performance of Water-Gas-Shift and Fischer-Tropsch Catalysts  

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

Effects of Coal Effects of Coal and Biomass Contaminants on the Performance of Water-Gas-Shift and Fischer-Tropsch Catalysts Background Coal-Biomass-to-Liquids (CBTL) processes gasify coal, biomass, and mixtures of coal/ biomass to produce synthesis gas (syngas) that can be converted to liquid hydrocarbon fuels. Positive benefits of these processes include the use of feedstocks from domestic sources and lower greenhouse gas production than can be achieved from using conventional petroleum-based fuels. However, syngas generated by coal and biomass co-gasification contains a myriad of trace contaminants that may poison the water- gas-shift (WGS) and Fischer-Tropsch (FT) catalysts used in the gas-to-liquid processes. While the effect of coal contaminants on FT processes is well studied, more research

405

In Situ Characterization of CuFe2O4 and Cu/Fe3O4 Water-Gas Shift Catalysts Michael Estrella,  

E-Print Network [OSTI]

the performance of the Pt electrode in fuel cell systems. In order to get clean hydrogen for fuel cells and otherIn Situ Characterization of CuFe2O4 and Cu/Fe3O4 Water-Gas Shift Catalysts Michael Estrella, LauraVised Manuscript ReceiVed: June 19, 2009 Mixtures of copper and iron oxides are used as industrial catalysts

Frenkel, Anatoly

406

E-Print Network 3.0 - active epstein-barr virus Sample Search...  

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79, No. 22 0022-538X0508.00 0 doi:10.1128JVI.79.22.1398413992.2005 Summary: , and S. Kenney. 2000. Epstein-Barr virus immediate-early proteins BZLF1 and BRLF1 activate the...

407

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

SciTech Connect (OSTI)

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

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

2005-11-03T23:59:59.000Z

408

Chemical Compositions and Antioxidant/Antimicrobial Activities of Various Samples Prepared from Schinus terebinthifolius Leaves Cultivated in Egypt  

Science Journals Connector (OSTI)

Chemical Compositions and Antioxidant/Antimicrobial Activities of Various Samples Prepared from Schinus terebinthifolius Leaves Cultivated in Egypt ... The fresh leaves of Egyptian S. terebinthifolius Raddi were collected from a tree growing in five different spots in Kalubia Delta, Middle Egypt on May 2007. ... Yields of essential oils from leaves of Egyptian S. terebinthifolius were 0.50 ± 0.01 g/100 g of fresh leaves and 0.90 ± 0.02 g/100 g of shade-dried leaves (w/w). ...

Khaled F. El-Massry; Ahmed H. El-Ghorab; Hamdy A. Shaaban; Takayuki Shibamoto

2009-05-22T23:59:59.000Z

409

An Evaluation of Activated Bismuth Isotopes in Environmental Samples From the Former Western Pacific Proving Grounds  

SciTech Connect (OSTI)

{sup 207}Bi (t{sub 1/2}=32.2 y) was generated by activation of weapons material during a few ''clean'' nuclear tests at the U.S. Western Pacific Proving Grounds of Enewetak and Bikini Atolls. The radionuclides first appeared in the Enewetak environment during 1958 and in the environment of Bikini during 1956. Crater sediments from Bikini with high levels of {sup 207}Bi were analyzed by gamma spectrometry in an attempt to determine the relative concentrations of {sup 208}Bi (t{sup 1/2} = 3.68 x 10{sup 5} y). The bismuth isotopes were probably generated during the ''clean'', 9.3 Mt Poplar test held on 7/12/58. The atom ratio of {sup 208}Bi to {sup 207}Bi (R value) ranges from {approx}12 to over 200 in sections of core sediments from the largest nuclear crater at Bikini atoll. The presence of bismuth in the device is suggested to account for R values in excess of 10.

Robison, W.L.; Brunk, J.A.; Jokela, T.A.

2000-03-21T23:59:59.000Z

410

CHARACTERIZATION OF A SAMPLE OF INTERMEDIATE-TYPE ACTIVE GALACTIC NUCLEI. II. HOST BULGE PROPERTIES AND BLACK HOLE MASS ESTIMATES  

SciTech Connect (OSTI)

We present a study of the host bulge properties and their relations with the black hole mass for a sample of 10 intermediate-type active galactic nuclei (AGNs). Our sample consists mainly of early-type spirals, four of them hosting a bar. For 70{sup +10} {sub -17}% of the galaxies, we have been able to determine the type of the bulge, and find that these objects probably harbor a pseudobulge or a combination of classical bulge/pseudobulge, suggesting that pseudobulges might be frequent in intermediate-type AGNs. In our sample, 50% {+-} 14% of the objects show double-peaked emission lines. Therefore, narrow double-peaked emission lines seem to be frequent in galaxies harboring a pseudobulge or a combination of classical bulge/pseudobulge. Depending on the bulge type, we estimated the black hole mass using the corresponding M {sub BH}-{sigma}* relation and found them within a range of 5.69 {+-} 0.21 < log M {sup {sigma}}*{sub BH} < 8.09 {+-} 0.24. Comparing these M {sup {sigma}}*{sub BH} values with masses derived from the FWHM of H{beta} and the continuum luminosity at 5100 A from their SDSS-DR7 spectra (M {sub BH}), we find that 8 out of 10 (80{sup +7} {sub -17}%) galaxies have black hole masses that are compatible within a factor of 3. This result would support that M {sub BH} and M {sup {sigma}}*{sub BH} are the same for intermediate-type AGNs, as has been found for type 1 AGNs. However, when the type of the bulge is taken into account, only three out of the seven (43{sup +18} {sub -15}%) objects of the sample have their M {sup {sigma}}*{sub BH} and M {sub BH} compatible within 3{sigma} errors. We also find that estimations based on the M {sub BH}-{sigma}* relation for pseudobulges are not compatible in 50% {+-} 20% of the objects.

Benitez, Erika; Cruz-Gonzalez, Irene; Martinez, Benoni; Jimenez-Bailon, Elena [Instituto de Astronomia, Universidad Nacional Autonoma de Mexico, Apdo. Postal 70-264, Mexico D.F. 04510 (Mexico)] [Instituto de Astronomia, Universidad Nacional Autonoma de Mexico, Apdo. Postal 70-264, Mexico D.F. 04510 (Mexico); Mendez-Abreu, Jairo; Lopez-Martin, Luis [Instituto de Astrofisica de Canarias, E-38200 La Laguna, Tenerife (Spain)] [Instituto de Astrofisica de Canarias, E-38200 La Laguna, Tenerife (Spain); Fuentes-Carrera, Isaura [Escuela Superior de Fisica y Matematicas, Instituto Politecnico Nacional (ESFM-IPN), U.P. Adolfo Lopez Mateos, Mexico D.F. 07730 (Mexico)] [Escuela Superior de Fisica y Matematicas, Instituto Politecnico Nacional (ESFM-IPN), U.P. Adolfo Lopez Mateos, Mexico D.F. 07730 (Mexico); Chavushyan, Vahram [Instituto Nacional de Astrofisica, Optica y Electronica, Apdo. Postal 51-216, 72000 Puebla (Mexico)] [Instituto Nacional de Astrofisica, Optica y Electronica, Apdo. Postal 51-216, 72000 Puebla (Mexico); Leon-Tavares, Jonathan, E-mail: erika@astro.unam.mx [Aalto University Metsaehovi Radio Observatory, Metsaehovintie 114, 02540 Kylmaelae (Finland)] [Aalto University Metsaehovi Radio Observatory, Metsaehovintie 114, 02540 Kylmaelae (Finland)

2013-02-15T23:59:59.000Z

411

Water Gas Shift Catalysis Using Iron Aerogels Doped with Palladium by the Gas-Phase Incorporation Method  

Science Journals Connector (OSTI)

The WGS activity of 2% Pd iron aerogel was higher by 50% than that of 1% Pd incorporated iron aerogel. ... (30) The reactors were charged with 100 mg of fresh catalysts held in place with Whatman QMA quartz fiber filters. ...

Sumit Bali; Gregory C. Turpin; Richard D. Ernst; Ronald J. Pugmire; Vivek Singh; Mohindar S. Seehra; Edward M. Eyring

2008-03-28T23:59:59.000Z

412

CO2 SELECTIVE CERAMIC MEMBRANE FOR WATER-GAS SHIFT REACTION WITH CONCOMITANT RECOVERY OF CO2  

SciTech Connect (OSTI)

CO{sub 2} diffusivity through hydrotalcite materials at 200 to 250 C was determined based upon the weight pick-up vs time. D/r{sup 2} (diffusivity/radius{sup 2}) for CO{sub 2} ranges from 3 x 10{sup -4} to 1 x 10{sup -3} depending upon the temperature. This range of diffusivity is consistent with the diffusivities through nanoporous materials, such as pillard clays and carbon molecular sieve, reported in the literature. Further the activation energy calculated based upon the diffusivity as a function of temperature is {approx}12 kcal/mole CO{sub 2}, indicating activated diffusion for CO{sub 2} transport through the intracrystalline region of hydrotalcite. More importantly nitrogen diffusivity determined based upon the same methodology is negligible. This implies that the hydrotalcite materials have a strong affinity to CO{sub 2}, but not nitrogen although the kinetic diameters for both molecules are similar. This result supports our proposed concept on the use of the hydrotalcite membrane for selective permeation of CO{sub 2}. In the next quarter, we will conduct more calculation to determine the CO{sub 2} permeability of an ideal hydrotalcite membrane. This theoretical analysis will provide a quantitative basis for the design of a hydrotalcite membrane. Further, the theoretical diffusivity thus obtained can be used as a tool to (1) gauge the degree of defects of experimental membranes prepared, and (2) direct the future membrane synthesis and improvement.

Paul K. T. Liu

2003-11-19T23:59:59.000Z

413

Sorption-Enhanced Synthetic Natural Gas (SNG) Production from Syngas: A Novel Process Combining CO Methanation, Water-Gas Shift, and CO2 Capture  

SciTech Connect (OSTI)

Synthetic natural gas (SNG) production from syngas is under investigation again due to the desire for less dependency from imports and the opportunity for increasing coal utilization and reducing green house gas emission. CO methanation is highly exothermic and substantial heat is liberated which can lead to process thermal imbalance and deactivation of the catalyst. As a result, conversion per pass is limited and substantial syngas recycle is employed in conventional processes. Furthermore, the conversion of syngas to SNG is typically performed at moderate temperatures (275 to 325°C) to ensure high CH4 yields since this reaction is thermodynamically limited. In this study, the effectiveness of a novel integrated process for the SNG production from syngas at high temperature (i.e. 600?C) was investigated. This integrated process consists of combining a CO methanation nickel-based catalyst with a high temperature CO2 capture sorbent in a single reactor. Integration with CO2 separation eliminates the reverse-water-gas shift and the requirement for a separate water-gas shift (WGS) unit. Easing of thermodynamic constraint offers the opportunity of enhancing yield to CH4 at higher operating temperature (500-700ºC) which also favors methanation kinetics and improves the overall process efficiency due to exploitation of reaction heat at higher temperatures. Furthermore, simultaneous CO2 capture eliminates green house gas emission. In this work, sorption-enhanced CO methanation was demonstrated using a mixture of a 68% CaO/32% MgAl2O4 sorbent and a CO methanation catalyst (Ni/Al2O3, Ni/MgAl2O4, or Ni/SiC) utilizing a syngas ratio (H2/CO) of 1, gas-hour-space velocity (GHSV) of 22 000 hr-1, pressure of 1 bar and a temperature of 600oC. These conditions resulted in ~90% yield to methane, which was maintained until the sorbent became saturated with CO2. By contrast, without the use of sorbent, equilibrium yield to methane is only 22%. Cyclic stability of the methanation catalyst and durability of the sorbent were also studied in the multiple carbonation-decarbonation cycle studies proving the potential of this integrated process in a practical application.

Lebarbier, Vanessa MC; Dagle, Robert A.; Kovarik, Libor; Albrecht, Karl O.; Li, Xiaohong S.; Li, Liyu; Taylor, Charles E.; Bao, Xinhe; Wang, Yong

2014-01-01T23:59:59.000Z

414

Disclaimer: This Sample CV was compiled from 6 different student pharmacists' activities to demonstrate formatting of various CV components. A single student's CV would not be expected to contain all of these activities. List section contents in reverse c  

E-Print Network [OSTI]

Disclaimer: This Sample CV was compiled from 6 different student pharmacists' activities@xxx.com ===================================================================== EDUCATION Month Yr ­ Present Skaggs School of Pharmacy and Pharmaceutical Sciences (SSPPS) University Skaggs School of Pharmacy & Pharmaceutical Sciences Year-Year Research Aspects of HIPAA Certification

Gleeson, Joseph G.

415

Methane Hydrate Formation and Dissociation in a Partially Saturated Core-Scale Sand Sample  

E-Print Network [OSTI]

gas system and the sand/hydrate/water/gas systems, as wellproperties of the sand/water/gas system, hydrate formation,saturated sand/water/gas (s/w/g) system, hydrate formation,

2005-01-01T23:59:59.000Z

416

Laboratory measurements on core-scale sediment/hydrate samples to predice reservoir behavior  

E-Print Network [OSTI]

top) and for the sand/hydrate/water/gas system (bottom),3.145 W / m K for the sand/hydrate/water/gas system (watertop-left) and the sand-hydrate-water-gas system (bottom-

Kneafsey, Timothy J.; Seol, Yongkoo; Moridis, George J.; Tomutsa, Liviu; Freifeld, Barry M.

2008-01-01T23:59:59.000Z

417

Genesis and evolution of surface species during Pt atomic layer deposition on oxide supports characterized by in-situ XAFS analysis and water-gas shift reaction.  

SciTech Connect (OSTI)

Platinum atomic layer deposition (ALD) using MeCpPtMe{sub 3} was employed to prepare high loadings of uniform-sized, 1-2 nm Pt nanoparticles on high surface area Al{sub 2}O{sub 3}, TiO{sub 2}, and SrTiO{sub 3} supports. X-ray absorption fine structure was utilized to monitor the changes in the Pt species during each step of the synthesis. The temperature, precursor exposure time, treatment gas, and number of ALD cycles were found to affect the Pt particle size and density. Lower-temperature MeCpPtMe{sub 3} adsorption yielded smaller particles due to reduced thermal decomposition. A 300 C air treatment of the adsorbed MeCpPtMe{sub 3} leads to PtO. In subsequent ALD cycles, the MeCpPtMe{sub 3} reduces the PtO to metallic Pt in the ratio of one precursor molecule per PtO. A 200 C H{sub 2} treatment of the adsorbed MeCpPtMe{sub 3} leads to the formation of 1-2 nm, metallic Pt nanoparticles. During subsequent ALD cycles, MeCpPtMe{sub 3} adsorbs on the support, which, upon reduction, yields additional Pt nanoparticles with a minimal increase in size of the previously formed nanoparticles. The catalysts produced by ALD had identical water-gas shift reaction rates and reaction kinetics to those of Pt catalysts prepared by standard solution methods. ALD synthesis of catalytic nanoparticles is an attractive method for preparing novel model and practical catalysts.

Setthapun, W.; Williams, W.; Kim, S.; Feng, H.; Elam, J.; Rabuffetti, F.; Poeppelmeier, K.; Stair, P.; Stach, E.; Ribeiro, F.; Miller, J.; Marshall, C.; Northwestern Univ.; Purdue Univ.

2010-06-03T23:59:59.000Z

418

Synthesis of Fe-zeolites and Fe-PILC samples and their activity in wet hydrogen peroxide oxidation of p-coumaric acid  

Science Journals Connector (OSTI)

The catalytic wet hydrogen peroxide oxidation of p-coumaric acid was investigated over various Fe-ZSM-5, Fe-BEA and Fe-PILC samples. The catalysts differing in the amount of iron were prepared by the solid state ion exchange method and were caracterized by XRD, BET surface area and Chemical analysis. The oxidation reaction was carried out in a batch reactor at 70°C and atmospheric pressure. A great interest has been focused on the leaching-off of iron. Fe-BEA catalysts were found more effective than Fe-ZSM-5 and Fe-PILC samples. At optimal condition, a solution containing 500 ppm of p-coumaric acid, 10?2M of H2O2 and 0.5 g/l of catalyst was degraded in less than 2h with a significant total organic carbon (TOC) removal. Characterization data were correlated with the activity results.

W. Najjar; A. Ghorbel; S. Perathoner; G. Centi

2005-01-01T23:59:59.000Z

419

September 2004 Water Sampling  

Office of Legacy Management (LM)

Sampling at the Sampling at the Shirley Basin South, Wyoming, Disposal Site September 2013 LMS/SBS/S00613 This page intentionally left blank U.S. Department of Energy DVP-June 2013, Shirley Basin South, Wyoming September 2013 RIN 13065426 Page i Contents Sampling Event Summary ...............................................................................................................1 Shirley Basin South, Wyoming, Disposal Site Sample Location Map ............................................3 Data Assessment Summary ..............................................................................................................5 Water Sampling Field Activities Verification Checklist .............................................................7

420

Characterization of the geochemical and physical properties of wetland soils on the Savannah River Site: Field sampling activities. Final report  

SciTech Connect (OSTI)

There are 36,000 acres of wetlands on the Savannah River Site (SRS) and an additional 5,000 acres of floodplain. Recent studies of wetland soils near various waste sites at SRS have shown that some wetlands have been contaminated with pollutants resulting from SRS operations. In general, releases of contaminants to wetland areas have been indirect. These releases may have originated at disposal lagoons or waste facilities located in the vicinity of the wetland areas. Transport mechanisms such as surface runoff, soil erosion, sediment transport, and groundwater seepage into downgradient wetland areas are responsible for the indirect discharges to the wetland areas. The SRS determined that a database of background geochemical and physical properties for wetland soils on the SRS was needed to facilitate future remedial investigations, human health and ecological risk assessments, treatability studies, and feasibility studies for the wetland areas. These data are needed for comparison to contaminant data collected from wetland soils that have been affected by contamination from SRS operations. This report describes the efforts associated with the collection of soil cores, preparation of a lithologic log for each core, and the processing and packaging of individual soil samples for shipment to analytical laboratory facilities.

Dixon, K.L. [Westinghouse Savannah River Co., Aiken, SC (United States)

1992-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "activity water-gas samples" 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

September 2004 Water Sampling  

Office of Legacy Management (LM)

Riverton, Wyoming, Riverton, Wyoming, Processing Site September 2013 LMS/RVT/S00613 This page intentionally left blank U.S. Department of Energy DVP-June 2013, Riverton, Wyoming September 2013 RIN 13065379 Page i Contents Sampling Event Summary ...............................................................................................................1 Riverton, Wyoming, Processing Site, Sample Location Map .........................................................5 Data Assessment Summary ..............................................................................................................7 Water Sampling Field Activities Verification Checklist .............................................................9 Laboratory Performance Assessment ........................................................................................11

422

Activities  

Broader source: Energy.gov [DOE]

Activities and events provide Residential Network members the opportunity to discuss similar needs and challenges, and to collectively identify effective strategies and useful resources.

423

Activation Products from Copper and Steel Samples Exposed to Showers Produced by 8 GeV Protons Lost in the Fermilab Main Injector Collimation System  

E-Print Network [OSTI]

In conjunction with efforts to predict residual radiation levels in the Fermilab Main Injector, measurements of residual radiation were correlated with the time history of losses. Detailed examination suggested that the list of radioactive isotopes used for fitting was incomplete. We will report on activation studies of magnet steel and copper samples which we irradiated adjacent to the Fermilab Main Injector collimation system. Our results identified several additional radioactive isotopes of interest. The MARS15 studies using a simplified model are compared with measurements. The long half-life isotopes will grow in importance as operation stretches to a second decade and as loss rates rise. These studies allow us to predict limits on these concerns.

Brown, Bruce C; Pronskikh, Vitaly S

2015-01-01T23:59:59.000Z

424

September 2004 Water Sampling  

Office of Legacy Management (LM)

Old and New Rifle, Old and New Rifle, Colorado, Processing Sites August 2013 LMS/RFN/RFO/S00613 This page intentionally left blank U.S. Department of Energy DVP-June 2013, Rifle, Colorado August 2013 RIN 13065380 Page i Contents Sampling Event Summary ...............................................................................................................1 Sample Location Map, New Rifle, Colorado, Processing Site ........................................................5 Sample Location Map, Old Rifle, Colorado, Processing Site ..........................................................6 Data Assessment Summary ..............................................................................................................7 Water Sampling Field Activities Verification Checklist .............................................................9

425

September 2004 Water Sampling  

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

3 3 Groundwater and Surface Water Sampling at the Tuba City, Arizona, Disposal Site November 2013 LMS/TUB/S00813 This page intentionally left blank U.S. Department of Energy DVP-August 2013, Tuba City, Arizona November 2013 RIN 13085553 Page i Contents Sampling Event Summary ...............................................................................................................1 Tuba City, Arizona, Disposal Site, Sample Location Map ..............................................................7 Data Assessment Summary ..............................................................................................................9 Water Sampling Field Activities Verification Checklist ...........................................................11

426

September 2004 Water Sampling  

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

and October 2013 and October 2013 Groundwater Sampling at the Bluewater, New Mexico, Disposal Site December 2013 LMS/BLU/S00813 This page intentionally left blank U.S. Department of Energy DVP-August and October 2013, Bluewater, New Mexico December 2013 RIN 13085537 and 13095651 Page i Contents Sampling Event Summary ...............................................................................................................1 Private Wells Sampled August 2013 and October 2013, Bluewater, NM, Disposal Site ................3 Data Assessment Summary ..............................................................................................................5 Water Sampling Field Activities Verification Checklist .............................................................7

427

September 2004 Water Sampling  

Office of Legacy Management (LM)

3 3 Groundwater and Surface Water Sampling at the Slick Rock East and West, Colorado, Processing Sites November 2013 LMS/SRE/SRW/S0913 This page intentionally left blank U.S. Department of Energy DVP-September 2013, Slick Rock, Colorado November 2013 RIN 13095593 Page i Contents Sampling Event Summary ...............................................................................................................1 Slick Rock East and West, Colorado, Processing Sites, Sample Location Map .............................5 Data Assessment Summary ..............................................................................................................7 Water Sampling Field Activities Verification Checklist .............................................................9

428

Mechanism and Site Requirements for Activation and Chemical Conversion of Methane on Supported Pt Clusters and Turnover Rate Comparisons among Noble Metals  

E-Print Network [OSTI]

decomposition, and water-gas shift reactions. Reforming rates are exclusively limited by C-H bond activation, indicating that CO2 activation is quasi-equilibrated and kinetically irrelevant. Binomial water, 2003; In Final Form: January 21, 2004 Isotopic tracer and kinetic studies are used to probe

Iglesia, Enrique

429

Gas Sampling | Open Energy Information  

Open Energy Info (EERE)

Gas Sampling Gas Sampling Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Gas Sampling Details Activities (7) Areas (7) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Field Techniques Exploration Sub Group: Field Sampling Parent Exploration Technique: Field Sampling Information Provided by Technique Lithology: Stratigraphic/Structural: High flux can be indicative of conduits for fluid flow. Hydrological: Gas composition and source of fluids. Thermal: Anomalous flux is associated with active hydrothermal activity. Distinguish magmatic/mantle heat inputs. Can be used to estimate reservoir fluid temperatures. Dictionary.png Gas Sampling: Gas sampling is done to characterize the chemical, thermal, and hydrological properties of a surface or subsurface hydrothermal system.

430

Reaction Pathways and Site Requirements for the Activation and Chemical Conversion of Methane on Ru-Based Catalysts  

E-Print Network [OSTI]

-reactant activation steps. These conclusions suggest that water-gas shift reactions are also equilibrated at Berkeley, Berkeley, California 94720 ReceiVed: June 24, 2003; In Final Form: September 29, 2003 Kinetic mechanistic picture and a unifying kinetic treatment for CH4/CO2 and CH4/H2O reforming reactions and CH4

Iglesia, Enrique

431

Radio Sources in Low-Luminosity Active Galactic Nuclei.IV. Radio Luminosity Function, Importance of Jet Power, and Radio Properties of the Complete Palomar Sample  

E-Print Network [OSTI]

We present the completed results of a high resolution radio imaging survey of all (~200) low-luminosity active galactic nuclei (LLAGNs) and AGNs in the Palomar Spectroscopic Sample. The high incidences of pc-scale radio nuclei, with T(brightness) >=10^7 K, and sub-parsec jets argue for accreting black holes in >=50% of all LINERs and low-luminosity Seyferts; there is no evidence against all LLAGNs being mini-AGNs. The radio luminosity function (RLF) of Palomar Sample LLAGNs and AGNs extends three orders of magnitude below, and is continuous with, that of `classical' AGNs. We find marginal evidence for a low-power turnover in the RLF; nevertheless LLAGNs are responsible for a significant fraction of present day mass accretion. Adopting the jet model of Falcke & Biermann, we show that the accretion energy output in LLAGNs is dominated by the energy in the observed jets rather than the radiated bolometric luminosity. The Palomar LLAGNs and AGNs follow the same scaling between jet power and narrow line region (NLR) luminosity as the pc to kpc jets in powerful radio galaxies. Eddington ratios of <= 10^{-1} - 10^{-5} are implied in jet models of the radio emission. We find evidence that, in analogy to Galactic black hole candidates, LINERs are in a `low/hard' state (gas poor nuclei, low Eddington ratio, ability to launch collimated jets) while low-luminosity Seyferts are in a `high' state (gas rich nuclei, higher Eddington ratio, less likely to launch collimated jets). The jets are energetically more significant than supernovae in the LLAGN host galaxies, and are potentially able to deposit sufficient energy into the innermost parsecs to significantly slow the gas supply to the accretion disk.

Neil M. Nagar; Heino Falcke; Andrew S. Wilson

2005-02-25T23:59:59.000Z

432

Alpha spectrometric characterization of process-related particle size distributions from active particle sampling at the Los Alamos National Laboratory uranium foundry  

SciTech Connect (OSTI)

Uranium particles within the respirable size range pose a significant hazard to the health and safety of workers. Significant differences in the deposition and incorporation patterns of aerosols within the respirable range can be identified and integrated into sophisticated health physics models. Data characterizing the uranium particle size distribution resulting from specific foundry-related processes are needed. Using personal air sampling cascade impactors, particles collected from several foundry processes were sorted by activity median aerodynamic diameter onto various Marple substrates. After an initial gravimetric assessment of each impactor stage, the substrates were analyzed by alpha spectrometry to determine the uranium content of each stage. Alpha spectrometry provides rapid nondestructive isotopic data that can distinguish process uranium from natural sources and the degree of uranium contribution to the total accumulated particle load. In addition, the particle size bins utilized by the impactors provide adequate resolution to determine if a process particle size distribution is: lognormal, bimodal, or trimodal. Data on process uranium particle size values and distributions facilitate the development of more sophisticated and accurate models for internal dosimetry, resulting in an improved understanding of foundry worker health and safety.

Plionis, Alexander A [Los Alamos National Laboratory; Peterson, Dominic S [Los Alamos National Laboratory; Tandon, Lav [Los Alamos National Laboratory; Lamont, Stephen P [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

433

September 2004 Water Sampling  

Office of Legacy Management (LM)

Green River, Utah, Disposal Site Green River, Utah, Disposal Site August 2013 LMS/GRN/S00613 This page intentionally left blank U.S. Department of Energy DVP-June 2013, Green River, Utah August 2013 RIN 13065402 Page i Contents Sampling Event Summary ...............................................................................................................1 Data Assessment Summary ..............................................................................................................7 Water Sampling Field Activities Verification Checklist .............................................................9 Laboratory Performance Assessment ........................................................................................11 Sampling Quality Control Assessment ......................................................................................18

434

activities  

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

Detecting Things We Cannot See: Learning the Concepts of Control and Detecting Things We Cannot See: Learning the Concepts of Control and Variable in an Experiment Submitted by Anita Brook-Dupree, 1996 TRAC teacher at Fermilab, Teacher, Alternative Middle Years School, Philadelphia, PA. Particle physicists at Fermilab in Batavia, Illinois are faced with the problem of detecting the presence of sub-atomic particles they cannot see. During my summer as a TRAC teacher at Fermilab, I tried to think of ways to teach middle school students about things we cannot see. I want to thank my nine-year-old daughter Gia for the idea for the following activity. I was lamenting that I could not come up with ideas of how to relate the work of Fermilab scientists to anything that my students would understand. Then I was reminded by my daughter, that when I brought her to school on the

435

Isotopic exchange measurements of the rates of adsorption/desorption and interconversion of CO and CO/sub 2/ over chromia-promoted magnetite: implications for water-gas shift  

SciTech Connect (OSTI)

Isotopic exchange measurements were used to investigate the adsorption/desorption and interconversion of CO and CO/sub 2/ on chromia-promoted magnetite at 565 and 627 K. The interconversion between CO and CO/sub 2/ was shown to take place through surface adsorbed species. Furthermore, the rate of interconversion was limited by the rates of adsorption/desorption, indicating either that adsorbed CO and CO/sub 2/ are in equilibrium on the surface or that the adsorption of CO and CO/sub 2/ leads to the same surface species, e.g., a surface carbonate species. A kinetic model for the water-gas shift over magnetite is proposed, and the results of the isotopic exchange measurements and volumetric adsorption data are used to estimate the rate and equilibrium constants for this model.

Tinkle, M.; Dumesic, J.A.

1987-01-01T23:59:59.000Z

436

Groundwater Sampling | Open Energy Information  

Open Energy Info (EERE)

Groundwater Sampling Groundwater Sampling Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Groundwater Sampling Details Activities (3) Areas (2) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Field Techniques Exploration Sub Group: Field Sampling Parent Exploration Technique: Water Sampling Information Provided by Technique Lithology: Stratigraphic/Structural: Hydrological: Water composition and source of fluids. Determination of mixing ratios between different fluid end-members. Determination of fluid recharge rates and residence times. Thermal: Water temperature. Dictionary.png Groundwater Sampling: Groundwater sampling is done to characterize the chemical, thermal, or hydrological properties of subsurface aqueous systems. Groundwater sampling

437

Water Sampling | Open Energy Information  

Open Energy Info (EERE)

Water Sampling Water Sampling Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Water Sampling Details Activities (51) Areas (45) Regions (5) NEPA(2) Exploration Technique Information Exploration Group: Field Techniques Exploration Sub Group: Field Sampling Parent Exploration Technique: Field Sampling Information Provided by Technique Lithology: Stratigraphic/Structural: Hydrological: Water composition and source of fluids Thermal: Water temperature Dictionary.png Water Sampling: Water sampling is done to characterize the chemical, thermal, or hydrological properties of a surface or subsurface aqueous system. Other definitions:Wikipedia Reegle Introduction Water sampling is done to characterize the geothermal system under investigation. A geothermal water typically has a unique chemical signature

438

The water-gas shift (WGS) reaction (CO + H2O = CO2+ H2) is an important reaction for hydrogen upgrading during fuel  

E-Print Network [OSTI]

-treatment units in practical low-temperature PEM fuel cell systems, whereby the deleterious CO should be totally for hydrogen upgrading during fuel gas processing. Emerging applications in fuel cells require active, non-pyrophoric, and cost-effective catalysts. Along with a new group of platinum catalysts with atomically dispersed Pt

Napp, Nils

439

Intercomparison of inductively coupled plasma mass spectrometry, quantitative neutron capture radiography, and prompt gamma activation analysis for the determination of boron in biological samples  

Science Journals Connector (OSTI)

Boron determination is of special interest for the analysis of biological samples in the context of boron neutron capture therapy (BNCT). BNCT is ... . This is achieved by enrichment of the isotope 10B in tumour ...

C. L. Schütz; C. Brochhausen; G. Hampel…

2012-10-01T23:59:59.000Z

440

Retail Merchandising & Product Development This sheet has sample occupations, work settings, employers, and career development activities associated with this major. Some of these  

E-Print Network [OSTI]

Retail Merchandising & Product Development This sheet has sample occupations, work settings Manufacturers Pattern Companies Retail Companies Specialty Stores Textile Manufacturers Federal & State with a concentration in retail merchandising and product development. HSN - Home Shopping Network JCPenney Kohl

Ronquist, Fredrik

Note: This page contains sample records for the topic "activity water-gas samples" 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

Computer Science This sheet has sample occupations, work settings, employers, and career development activities associated with this major. Some of these  

E-Print Network [OSTI]

Computer Science This sheet has sample occupations, work settings, employers, and career Occupations Computer Operations Computer Hardware/ Software Engineer Computer Operator Database Manager/ Administrator Data Entry Operator Operations Manager Design & Manufacturing, Engineering Computer Applications

Ronquist, Fredrik

442

Anthrax Sampling  

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

Anthrax Anthrax Sampling and Decontamination: Technology Trade-Offs Phillip N. Price, Kristina Hamachi, Jennifer McWilliams, and Michael D. Sohn Environmental Energy Technologies Division Lawrence Berkeley National Laboratory Berkeley CA 94720 September 12, 2008 This work was supported by the Office of Science, Office of High Energy Physics, Homeland Security under the U.S. Department of Energy under Contract No. DE-AC02-05CH1123. Contents 1 Executive Summary 3 1.1 How much sampling is needed to decide if a building is safe? . . . . . . . 3 1.1.1 Sampling Nomogram . . . . . . . . . . . . . . . . . . . . . . . . . . 4 1.2 How many characterization samples should be taken? . . . . . . . . . . . 7 1.3 What decontamination method should be used? . . . . . . . . . . . . . . . 7 1.4 Post-decontamination sampling . . . . . . . . . . . . . . . . . . . . . . . . 8 1.5 What are rules of thumb for cost and effort? . . . . . . . . . . . .

443

Gas Flux Sampling | Open Energy Information  

Open Energy Info (EERE)

Gas Flux Sampling Gas Flux Sampling Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Gas Flux Sampling Details Activities (26) Areas (20) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Field Techniques Exploration Sub Group: Field Sampling Parent Exploration Technique: Gas Sampling Information Provided by Technique Lithology: Stratigraphic/Structural: High flux can be indicative of conduits for fluid flow. Hydrological: Thermal: Anomalous flux is associated with active hydrothermal activity. Dictionary.png Gas Flux Sampling: Gas flux sampling measures the flow of volatile gas emissions from a specific location and compares it to average background emissions. Anomalously high gas flux can be an indication of hydrothermal activity.

444

Gas Flux Sampling (Klein, 2007) | Open Energy Information  

Open Energy Info (EERE)

2007) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Gas Flux Sampling (Klein, 2007) Exploration Activity Details Location Unspecified...

445

Gas Flux Sampling (Lewicki & Oldenburg, 2004) | Open Energy Informatio...  

Open Energy Info (EERE)

2004) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Gas Flux Sampling (Lewicki & Oldenburg, 2004) Exploration Activity Details Location...

446

Sampling apparatus  

DOE Patents [OSTI]

A sampling apparatus is provided for sampling substances from solid surfaces. The apparatus includes first and second elongated tubular bodies which telescopically and sealingly join relative to one another. An absorbent pad is mounted to the end of a rod which is slidably received through a passageway in the end of one of the joined bodies. The rod is preferably slidably and rotatably received through the passageway, yet provides a selective fluid tight seal relative thereto. A recess is formed in the rod. When the recess and passageway are positioned to be coincident, fluid is permitted to flow through the passageway and around the rod. The pad is preferably laterally orientable relative to the rod and foldably retractable to within one of the bodies. A solvent is provided for wetting of the pad and solubilizing or suspending the material being sampled from a particular surface. 15 figs.

Gordon, N.R.; King, L.L.; Jackson, P.O.; Zulich, A.W.

1989-07-18T23:59:59.000Z

447

Sampling apparatus  

DOE Patents [OSTI]

A sampling apparatus is provided for sampling substances from solid surfaces. The apparatus includes first and second elongated tubular bodies which telescopically and sealingly join relative to one another. An absorbent pad is mounted to the end of a rod which is slidably received through a passageway in the end of one of the joined bodies. The rod is preferably slidably and rotatably received through the passageway, yet provides a selective fluid tight seal relative thereto. A recess is formed in the rod. When the recess and passageway are positioned to be coincident, fluid is permitted to flow through the passageway and around the rod. The pad is preferably laterally orientable relative to the rod and foldably retractable to within one of the bodies. A solvent is provided for wetting of the pad and solubilizing or suspending the material being sampled from a particular surface.

Gordon, Norman R. (Kennewick, WA); King, Lloyd L. (Benton, WA); Jackson, Peter O. (Richland, WA); Zulich, Alan W. (Bel Air, MD)

1989-01-01T23:59:59.000Z

448

Soil Sampling | Open Energy Information  

Open Energy Info (EERE)

Soil Sampling Soil Sampling Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Soil Sampling Details Activities (10) Areas (9) Regions (1) NEPA(0) Exploration Technique Information Exploration Group: Field Techniques Exploration Sub Group: Field Sampling Parent Exploration Technique: Field Sampling Information Provided by Technique Lithology: Stratigraphic/Structural: Can reveal relatively high permeability zones Hydrological: Thermal: Used to locate active hydrothermal systems Dictionary.png Soil Sampling: Soil sampling is a method that can be used for exploration of geothermal resources that lack obvious surface manifestations. Soils that are above or adjacent to a "hidden" hydrothermal system will have a unique chemistry that can be indicative of a hydrothermal system at depth and a zone of

449

NMR studies of water-gas interactions  

Science Journals Connector (OSTI)

Analysis of published data concerning the solubility of different gases in water as dependent on temperature was carried out. ... described by mono-or bi-exponential functions. Solubilities of nitrogen and oxygen...

V. P. Kutyshenko; S. I. Vorob’ev

2013-07-01T23:59:59.000Z

450

Water-Gas Shift Membrane Reactor Studies  

E-Print Network [OSTI]

Coal, Petroleum coke, Biomass, Waste, etc. Gasifier Particulate Removal Air Separator Oxygen Air Steam - Transition to the Hydrogen Economy - CO2 capture and sequestration #12;Coal Gasification Technology Options&D Plan · Project falls within the Technical Objective to develop technology to produce pure H2 from coal

451

Rock Sampling | Open Energy Information  

Open Energy Info (EERE)

Rock Sampling Rock Sampling Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Rock Sampling Details Activities (13) Areas (13) Regions (1) NEPA(0) Exploration Technique Information Exploration Group: Field Techniques Exploration Sub Group: Field Sampling Parent Exploration Technique: Field Sampling Information Provided by Technique Lithology: Rock samples are used to define lithology. Field and lab analyses can be used to measure the chemical and isotopic constituents of rock samples. Stratigraphic/Structural: Provides information about the time and environment which formed a particular geologic unit. Microscopic rock textures can be used to estimate the history of stress and strain, and/or faulting. Hydrological: Isotope geochemistry can reveal fluid circulation of a geothermal system.

452

Surface Water Sampling | Open Energy Information  

Open Energy Info (EERE)

Surface Water Sampling Surface Water Sampling Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Surface Water Sampling Details Activities (1) Areas (1) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Field Techniques Exploration Sub Group: Field Sampling Parent Exploration Technique: Water Sampling Information Provided by Technique Lithology: Stratigraphic/Structural: Hydrological: Water composition and source of fluids Thermal: Water temperature Dictionary.png Surface Water Sampling: Water sampling is done to characterize the chemical, thermal, or hydrological properties of a surface or subsurface aqueous system. Other definitions:Wikipedia Reegle Introduction Surface water sampling of hot and cold spring discharges has traditionally

453

Soil Gas Sampling At Kilauea East Rift Geothermal Area (Cox,...  

Open Energy Info (EERE)

Soil Gas Sampling At Kilauea East Rift Geothermal Area (Cox, 1980) Exploration Activity Details Location Kilauea East Rift Geothermal Area Exploration Technique Soil Gas Sampling...

454

Soil Gas Sampling | Open Energy Information  

Open Energy Info (EERE)

Soil Gas Sampling Soil Gas Sampling Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Soil Gas Sampling Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Field Techniques Exploration Sub Group: Field Sampling Parent Exploration Technique: Gas Sampling Information Provided by Technique Lithology: Stratigraphic/Structural: Identify concealed faults that act as conduits for hydrothermal fluids. Hydrological: Identify hydrothermal gases of magmatic origin. Thermal: Differentiate between amagmatic or magmatic sources heat. Dictionary.png Soil Gas Sampling: Soil gas sampling is sometimes used in exploration for blind geothermal resources to detect anomalously high concentrations of hydrothermal gases

455

Surface Gas Sampling | Open Energy Information  

Open Energy Info (EERE)

Surface Gas Sampling Surface Gas Sampling Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Surface Gas Sampling Details Activities (12) Areas (10) Regions (1) NEPA(0) Exploration Technique Information Exploration Group: Field Techniques Exploration Sub Group: Field Sampling Parent Exploration Technique: Gas Sampling Information Provided by Technique Lithology: Stratigraphic/Structural: Hydrological: Gas composition and source of fluids. Thermal: Distinguish magmatic/mantle heat inputs. Can be used to estimate reservoir fluid temperatures. Dictionary.png Surface Gas Sampling: Gas sampling is done to characterize the chemical, thermal, or hydrological properties of a surface or subsurface hydrothermal system. Other definitions:Wikipedia Reegle Introduction

456

Gas Sampling At Rye Patch Area (DOE GTP, 2011) | Open Energy...  

Open Energy Info (EERE)

Gas Sampling At Rye Patch Area (DOE GTP, 2011) Exploration Activity Details Location Rye Patch Area Exploration Technique Gas Sampling Activity Date Usefulness not indicated...

457

Surface Gas Sampling At Valles Caldera - Redondo Area (Goff ...  

Open Energy Info (EERE)

to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Surface Gas Sampling At Valles Caldera - Redondo Area (Goff & Janik, 2002) Exploration Activity...

458

Soil Gas Sampling At Chena Geothermal Area (Kolker, 2008) | Open...  

Open Energy Info (EERE)

Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Soil Gas Sampling At Chena Geothermal Area (Kolker, 2008) Exploration Activity Details Location...

459

Gas Sampling At Colrado Area (DOE GTP) | Open Energy Information  

Open Energy Info (EERE)

GTP) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Gas Sampling At Colrado Area (DOE GTP) Exploration Activity Details Location Colado...

460

Gas Flux Sampling At Desert Peak Area (Lechler And Coolbaugh...  

Open Energy Info (EERE)

2007) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Gas Flux Sampling At Desert Peak Area (Lechler And Coolbaugh, 2007) Exploration Activity...

Note: This page contains sample records for the topic "activity water-gas samples" 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

Surface Gas Sampling At Fenton Hill HDR Geothermal Area (Goff...  

Open Energy Info (EERE)

to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Surface Gas Sampling At Fenton Hill HDR Geothermal Area (Goff & Janik, 2002) Exploration Activity...

462

Gas Flux Sampling At Kilauea East Rift Geothermal Area (Thomas...  

Open Energy Info (EERE)

1986) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Gas Flux Sampling At Kilauea East Rift Geothermal Area (Thomas, 1986) Exploration Activity...

463

Water Sampling At Lightning Dock Geothermal Area (Swanberg, 1976...  

Open Energy Info (EERE)

Activity Details Location Lightning Dock Geothermal Area Exploration Technique Water Sampling Activity Date Usefulness useful DOE-funding Unknown Exploration Basis...

464

Field Sampling | Open Energy Information  

Open Energy Info (EERE)

form form View source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit with form History Facebook icon Twitter icon » Field Sampling Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Field Sampling Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Field Techniques Exploration Sub Group: Field Sampling Parent Exploration Technique: Field Techniques Information Provided by Technique Lithology: Rock samples are used to define lithology. Field and lab analyses can be used to measure the chemical and isotopic constituents of rock samples. Stratigraphic/Structural: Can reveal relatively high permeability zones. Provides information about the time and environment which formed a particular geologic unit. Microscopic rock textures can be used to estimate the history of stress and strain, and/or faulting.

465

Neutron activation analysis  

Science Journals Connector (OSTI)

Neutron activation analysis (NAA) is an that relies on the measurement of ?-rays emitted from a sample that was irradiated by neutrons. The rate at which ?-rays are emitted from an element in a sample is dir...

James R. Budahn

1998-01-01T23:59:59.000Z

466

Neutron activation experiments in radiochemistry  

Science Journals Connector (OSTI)

Neutron activation experiments in radiochemistry ... Describes experimentation involving the neutron activation of a variety of samples irradiated in a subcritical reactor and a paraffin-moderated source. ...

Karl S. Vorres

1960-01-01T23:59:59.000Z

467

Gas Flux Sampling (Lewicki & Oldenburg) | Open Energy Information  

Open Energy Info (EERE)

Gas Flux Sampling (Lewicki & Oldenburg) Gas Flux Sampling (Lewicki & Oldenburg) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Gas Flux Sampling (Lewicki & Oldenburg) Exploration Activity Details Location Unspecified Exploration Technique Gas Flux Sampling Activity Date Usefulness useful DOE-funding Unknown References Jennifer L. Lewicki, Curtis M. Oldenburg (Unknown) Near-Surface Co2 Monitoring And Analysis To Detect Hidden Geothermal Systems Retrieved from "http://en.openei.org/w/index.php?title=Gas_Flux_Sampling_(Lewicki_%26_Oldenburg)&oldid=508144" Categories: Exploration Activities DOE Funded Activities What links here Related changes Special pages Printable version Permanent link Browse properties 429 Throttled (bot load) Error 429 Throttled (bot load)

468

Fluid sampling system for a nuclear reactor  

DOE Patents [OSTI]

A system of extracting fluid samples, either liquid or gas, from the interior of a nuclear reactor containment utilizes a jet pump. To extract the sample fluid, a nonradioactive motive fluid is forced through the inlet and discharge ports of a jet pump located outside the containment, creating a suction that draws the sample fluid from the containment through a sample conduit connected to the pump suction port. The mixture of motive fluid and sample fluid is discharged through a return conduit to the interior of the containment. The jet pump and means for removing a portion of the sample fluid from the sample conduit can be located in a shielded sample grab station located next to the containment. A non-nuclear grade active pump can be located outside the grab sampling station and the containment to pump the nonradioactive motive fluid through the jet pump.

Lau, Louis K. (Monroeville, PA); Alper, Naum I. (Monroeville, PA)

1994-01-01T23:59:59.000Z

469

sediment samples | EMSL  

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

sediment samples sediment samples Leads No leads are available at this time. Diffusional Motion of Redox Centers in Carbonate Electrolytes . Abstract: Ferrocene (Fc) and...

470

Water and Sediment Sampling  

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

analytical laboratory limit below which any level present cannot be determined) Note: Sediment sample locations are co-located with off-site surface water sample locations. Surface...

471

Downhole Fluid Sampling | Open Energy Information  

Open Energy Info (EERE)

Downhole Fluid Sampling Downhole Fluid Sampling Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Downhole Fluid Sampling Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Downhole Techniques Exploration Sub Group: Well Testing Techniques Parent Exploration Technique: Well Testing Techniques Information Provided by Technique Lithology: Stratigraphic/Structural: Hydrological: Water composition and source of fluids. Gas composition and source of fluids. Thermal: Water temperature. Distinguish magmatic/mantle heat inputs. Can be used to estimate reservoir fluid temperatures. Dictionary.png Downhole Fluid Sampling: Downhole fluid sampling is done to characterize the chemical, thermal, or hydrological properties of a surface or subsurface aqueous system. Downhole

472

ESPC IDIQ Contract Sample  

Broader source: Energy.gov [DOE]

Document displays a sample indefinite delivery, indefinite quantity (IDIQ) energy savings performance contract (ESPC).

473

On the mechanism of the reverse water gas shift reaction: Dynamic TAP reactor studies of the oxidizing capability of CO2 on a Au/CeO2 catalyst  

E-Print Network [OSTI]

of the oxidizing capability of CO2 on a Au/CeO2 catalyst L.C. Wang, M. Tahvildar Khazaneh, D. Widmann, and R the role of the redox mechanism, was investigated by exploring the activity of CO2 for Au assisted CeO2 that the surface reduced Au/CeO2 catalyst can be (partially) re-oxidized by exposure to CO2 pulses, and the surface

Pfeifer, Holger

474

AUTOMATING GROUNDWATER SAMPLING AT HANFORD  

SciTech Connect (OSTI)

Until this past October, Fluor Hanford managed Hanford's integrated groundwater program for the U.S. Department of Energy (DOE). With the new contract awards at the Site, however, the CH2M HILL Plateau Remediation Company (CHPRC) has assumed responsibility for the groundwater-monitoring programs at the 586-square-mile reservation in southeastern Washington State. These programs are regulated by the Resource Conservation and Recovery Act (RCRA) and the Comprehensive Environmental Response Compensation and Liability Act (CERCLA). The purpose of monitoring is to track existing groundwater contamination from past practices, as well as other potential contamination that might originate from RCRA treatment, storage, and disposal (TSD) facilities. An integral part of the groundwater-monitoring program involves taking samples of the groundwater and measuring the water levels in wells scattered across the site. More than 1,200 wells are sampled each year. Historically, field personnel or 'samplers' have been issued pre-printed forms that have information about the well(s) for a particular sampling evolution. This information is taken from the Hanford Well Information System (HWIS) and the Hanford Environmental Information System (HEIS)--official electronic databases. The samplers used these hardcopy forms to document the groundwater samples and well water-levels. After recording the entries in the field, the samplers turned the forms in at the end of the day and the collected information was posted onto a spreadsheet that was then printed and included in a log book. The log book was then used to make manual entries of the new information into the software application(s) for the HEIS and HWIS databases. This is a pilot project for automating this tedious process by providing an electronic tool for automating water-level measurements and groundwater field-sampling activities. The automation will eliminate the manual forms and associated data entry, improve the accuracy of the information recorded, and enhance the efficiency and sampling capacity of field personnel. The goal of the effort is to eliminate 100 percent of the manual input to the database(s) and replace the management of paperwork by the field and clerical personnel with an almost entirely electronic process. These activities will include the following: scheduling the activities of the field teams, electronically recording water-level measurements, electronically logging and filing Groundwater Sampling Reports (GSR), and transferring field forms into the site-wide Integrated Document Management System (IDMS).

CONNELL CW; HILDEBRAND RD; CONLEY SF; CUNNINGHAM DE

2009-01-16T23:59:59.000Z

475

Gas Sampling Considerations  

Science Journals Connector (OSTI)

Gas sampling is carried out to measure the quality of a gas. Gas samples are sometimes acquired by in situ observation within the main gas body by using remote or visual observation for specific properties. A mor...

Alvin Lieberman

1992-01-01T23:59:59.000Z

476

September 2004 Water Sampling  

Office of Legacy Management (LM)

event. Sampling Protocol Wells USGS-4 and USGS-8 were sampled using dedicated bladder pumps. Data from these wells are qualified with an "F" flag in the database indicating the...

477

Sample Proficiency Test exercise  

SciTech Connect (OSTI)

The current format of the OPCW proficiency tests has multiple sets of 2 samples sent to an analysis laboratory. In each sample set, one is identified as a sample, the other as a blank. This method of conducting proficiency tests differs from how an OPCW designated laboratory would receive authentic samples (a set of three containers, each not identified, consisting of the authentic sample, a control sample, and a blank sample). This exercise was designed to test the reporting if the proficiency tests were to be conducted. As such, this is not an official OPCW proficiency test, and the attached report is one method by which LLNL might report their analyses under a more realistic testing scheme. Therefore, the title on the report ''Report of the Umpteenth Official OPCW Proficiency Test'' is meaningless, and provides a bit of whimsy for the analyses and readers of the report.

Alcaraz, A; Gregg, H; Koester, C

2006-02-05T23:59:59.000Z

478

Surface Gas Sampling At International Geothermal Area Mexico...  

Open Energy Info (EERE)

to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Surface Gas Sampling At International Geothermal Area Mexico (Norman, Et Al., 2002) Exploration...

479

Surface Gas Sampling At Valles Caldera - Sulphur Springs Area...  

Open Energy Info (EERE)

Surface Gas Sampling At Valles Caldera - Sulphur Springs Area (Goff & Janik, 2002) Exploration Activity Details Location Valles Caldera - Sulphur Springs Area Exploration Technique...

480

Surface Gas Sampling At Fenton Hill HDR Geothermal Area (Grigsby...  

Open Energy Info (EERE)

to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Surface Gas Sampling At Fenton Hill HDR Geothermal Area (Grigsby, Et Al., 1983) Exploration...

Note: This page contains sample records for the topic "activity water-gas samples" 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

Combining steam-methane reforming, water-gas shift, and CO{sub 2} removal in a single-step process for hydrogen production. Final report for period March 15, 1997 - December 14, 2000  

SciTech Connect (OSTI)

The objective of the research project was to determine the feasibility of a simpler, more energy-efficient process for the production of 95+% H{sub 2} from natural gas, and to collect sufficient experimental data on the effect of reaction parameters to guide additional larger-scale process development. The overall objectives were accomplished. 95+% H{sub 2} was produced in a single reaction step by adding a calcium-based CO{sub 2} acceptor to standard Ni-based reforming catalyst. The spent acceptor was successfully regenerated and used in a number of reaction steps with only moderate loss in activity as the number of cycles increased. Sufficient experimental data were collected to guide further larger-scale experimental work designed to investigate the economic feasibility of the process.

Alejandro Lopez Ortiz; Bhaskar Balasubramanian; Douglas P. Harrison

2001-02-01T23:59:59.000Z

482

Systematic sampling with errors in sample locations  

Science Journals Connector (OSTI)

......truncation points 0 and 2 and standard deviation = 0 05 (middle...distributed with density h. Standard renewal theory yields...systematic sampling: a review of Matheron's transitive...Trans. Inst. Econ. Mining 59, 147. GUAL-ARNAU...methods. J. Statist. Plan. Infer. 77, 263279......

Johanna Ziegel; Adrian Baddeley; Karl-Anton Dorph-Petersen; Eva B. Vedel Jensen

2010-03-01T23:59:59.000Z

483

This sheet has sample occupations, work settings, employers, and career development activities associated with this major. Some of these options may require additional training and career planning. You are not limited to these options when choosing a poss  

E-Print Network [OSTI]

Accounting Accounting Clerk Auditor Budget Analyst Certified Fraud Examiner Certified Internal Auditor Internal/External Auditor Loan Counselor/Officer Purchasing Agent Revenue Agent Securities Waddell & Reed Inc. Wells Fargo Company #12;Sample Career Center Library Resources Careers for High-Energy

Sura, Philip

484

Assessing respondent-driven sampling  

Science Journals Connector (OSTI)

...convenience sampling through the internet versus respondent driven sampling...in Social Networks, Drug Abuse, and HIV Transmission , eds...5) MSM Tallinn, Estonia Internet convenience sampling...convenience sampling through the internet versus respondent driven sampling...

Sharad Goel; Matthew J. Salganik

2010-01-01T23:59:59.000Z

485

Sampled data lattice filters  

E-Print Network [OSTI]

SAMPLED DATA LATTICE FILTERS A Thesis by WILLIAM TERRY THRIFT III Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE December 1979 Major Subfect...: Electrical Engineering SAMPLED DATA LATTICE FILTERS A Thesis by WILLIAM TERRY THRIFT III Approved as to style and content by: (Chair an of Committee) (Hea f Department) (Member) (Member) (Member) (Member) December 1979 ABSTRACT Sampled Data...

Thrift, William Terry

2012-06-07T23:59:59.000Z

486

September 2004 Water Sampling  

Office of Legacy Management (LM)

sample recovery not within control limits. Organic: Tentatively identified compound (TIC). P > 25% difference in detected pesticide or Aroclor concentrations between 2 columns....

487

EMSL - sediment samples  

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

sediment-samples en Diffusional Motion of Redox Centers in Carbonate Electrolytes . http:www.emsl.pnl.govemslwebpublicationsdiffusional-motion-redox-centers-carbonate-electrol...

488

September 2004 Water Sampling  

Office of Legacy Management (LM)

conducted in accordance with the Sampling and Analysis Plan for the U. S. Department of Energy Office of Legacy Management Sites (LMSPROS04351, continually updated). Monitoring...

489

September 2004 Water Sampling  

Office of Legacy Management (LM)

4 Groundwater and Surface Water Sampling at the Gunnison, Colorado, Processing Site September 2014 LMSGUPS00414 This page intentionally left blank U.S. Department of Energy...

490

September 2004 Water Sampling  

Office of Legacy Management (LM)

4 Groundwater and Surface Water Sampling at the Slick Rock, Colorado, Processing Sites December 2014 LMSSRWSRES00914 This page intentionally left blank U.S. Department of Energy...

491

Uncertainty and sampling issues in tank characterization  

SciTech Connect (OSTI)

A defensible characterization strategy must recognize that uncertainties are inherent in any measurement or estimate of interest and must employ statistical methods for quantifying and managing those uncertainties. Estimates of risk and therefore key decisions must incorporate knowledge about uncertainty. This report focuses statistical methods that should be employed to ensure confident decision making and appropriate management of uncertainty. Sampling is a major source of uncertainty that deserves special consideration in the tank characterization strategy. The question of whether sampling will ever provide the reliable information needed to resolve safety issues is explored. The issue of sample representativeness must be resolved before sample information is reliable. Representativeness is a relative term but can be defined in terms of bias and precision. Currently, precision can be quantified and managed through an effective sampling and statistical analysis program. Quantifying bias is more difficult and is not being addressed under the current sampling strategies. Bias could be bounded by (1) employing new sampling methods that can obtain samples from other areas in the tanks, (2) putting in new risers on some worst case tanks and comparing the results from existing risers with new risers, or (3) sampling tanks through risers under which no disturbance or activity has previously occurred. With some bound on bias and estimates of precision, various sampling strategies could be determined and shown to be either cost-effective or infeasible.

Liebetrau, A.M.; Pulsipher, B.A.; Kashporenko, D.M. [and others

1997-06-01T23:59:59.000Z

492

Sampling system and method  

DOE Patents [OSTI]

The present disclosure provides an apparatus and method for coupling conduit segments together. A first pump obtains a sample and transmits it through a first conduit to a reservoir accessible by a second pump. The second pump further conducts the sample from the reservoir through a second conduit.

Decker, David L.; Lyles, Brad F.; Purcell, Richard G.; Hershey, Ronald Lee

2013-04-16T23:59:59.000Z

493

2003 CBECS Sample Design  

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

Technical Information > Sample Design Technical Information > Sample Design How the Survey Was Conducted 2003 Commercial Buildings Energy Consumption Survey: Sample Design Introduction The Commercial Buildings Energy Consumption Survey (CBECS) is conducted quadrennially by the Energy Information Administration (EIA) to provide basic statistical information about energy consumption and expenditures in U.S. commercial buildings and information about energy-related characteristics of these buildings. The survey is based upon a sample of commercial buildings selected according to the sample design requirements described below. A “building,” as opposed to an “establishment,” is the basic unit of analysis for the CBECS because the building is the energy-consuming unit. The 2003 CBECS was the eighth survey conducted since 1979

494

Sample Changes and Issues  

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

Sample and Model Issues Sample and Model Issues Summary Our comprehensive review of the EIA 914 has confirmed that discrepancies can arise between estimates for December of one year and January of the next. These are most evident for Texas estimates between December 2008 and January 2009. Reports now available from HPDI show that production for all the companies we sampled in both 2008 and 2009 rose by about 60 million cubic feet per day (MMcf/d) in January and that total production in Texas rose by a similar amount. Our estimate was a decrease of 360 MMcf/d. Why the difference? Computationally, EIA-914 estimates depend on two factors: * Reports from the companies in the survey sample * An expansion factor to estimate total production from the sample's reported

495

Gas Flux Sampling At Socorro Mountain Area (Owens, Et Al., 2005...  

Open Energy Info (EERE)

2005) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Gas Flux Sampling At Socorro Mountain Area (Owens, Et Al., 2005) Exploration Activity...

496

Gas Flux Sampling At Black Warrior Area (DOE GTP) | Open Energy...  

Open Energy Info (EERE)

GTP) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Gas Flux Sampling At Black Warrior Area (DOE GTP) Exploration Activity Details Location...

497

Gas Flux Sampling At Maui Area (DOE GTP) | Open Energy Information  

Open Energy Info (EERE)

GTP) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Gas Flux Sampling At Maui Area (DOE GTP) Exploration Activity Details Location Maui Area...

498

Gas Flux Sampling At Mccoy Geothermal Area (DOE GTP) | Open Energy...  

Open Energy Info (EERE)

GTP) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Gas Flux Sampling At Mccoy Geothermal Area (DOE GTP) Exploration Activity Details Location...

499

Surface Gas Sampling (Klein, 2007) | Open Energy Information  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Surface Gas Sampling (Klein, 2007) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Surface Gas Sampling (Klein, 2007) Exploration Activity Details Location Unspecified Exploration Technique Surface Gas Sampling Activity Date Usefulness not indicated DOE-funding Unknown References Christopher W. Klein (1 January 2007) Advances In The Past 20 Years- Geochemistry In Geothermal Exploration Resource Evaluation And Reservoir Management Retrieved from "http://en.openei.org/w/index.php?title=Surface_Gas_Sampling_(Klein,_2007)&oldid=689399"

500

Sampling and Analysis Plan for PUREX canyon vessel flushing  

SciTech Connect (OSTI)

A sampling and analysis plan is necessary to provide direction for the sampling and analytical activities determined by the data quality objectives. This document defines the sampling and analysis necessary to support the deactivation of the Plutonium-Uranium Extraction (PUREX) facility vessels that are regulated pursuant to Washington Administrative Code 173-303.

Villalobos, C.N.

1995-03-01T23:59:59.000Z