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Note: This page contains sample records for the topic "larson garnet alkali" from the National Library of EnergyBeta (NLEBeta).
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1

Doug Larson  

NLE Websites -- All DOE Office Websites (Extended Search)

Doug Larson Doug Larson Deputy for NIF National Ignition Facility Doug Larson, deputy for NIF, has 27 years of experience in LLNL's fusion programs, including NIF technology...

2

Kent Larson Curriculum Vitae, Narrative  

E-Print Network (OSTI)

health, energy conservation, communication, and learning. Larson's group, with TIAX LLC, has developed: American Institute of Architects, Florida Headquarters Design Competition, 1980. Selected Publications Open

3

Microsoft PowerPoint - Larson.ppt  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

for What? for What? Planning for What? The Path Forward in the Western The Path Forward in the Western Interconnection Interconnection Doug Larson Doug Larson Western Interstate Energy Board Western Interstate Energy Board 1 1 Bottom Line Bottom Line Without agreement on the future for which Without agreement on the future for which we are planning and building transmission, we are planning and building transmission, our efforts are the equivalent of our efforts are the equivalent of pushing a string uphill. pushing a string uphill. 2 Outline of Presentation Outline of Presentation * * Explain the institutional and historical context for my Explain the institutional and historical context for my comments comments * * Outline the existing transmission planning, Outline the existing transmission planning,

4

Magnetism of Europium Garnet  

Science Journals Connector (OSTI)

The theoretical expressions for the magnetic moment of a trivalent europium ion in a molecular field arising from exchange are applied to Pauthenet's measurements on europium iron garnet. It is a good approximation to assume that the exchange interaction stems entirely from the coupling with the iron atoms, which greatly simplifies the theory since the molecular field on the europium is then an impressed one and does not have to be determined self-consistently. The calculated variation of the magnetization with temperature is in excellent accord with experiment. The magnitude of the exchange interaction is compared with that in the other rare earth iron garnets; it is almost exactly the same as in gadolinium iron garnet.

W. P. Wolf and J. H. Van Vleck

1960-06-15T23:59:59.000Z

5

LARSON--MATH 556--CLASSROOM WORKSHEET 07 Hamilton Cycles  

E-Print Network (OSTI)

Last name First name LARSON--MATH 556--CLASSROOM WORKSHEET 07 Hamilton Cycles An alternating-cycle. A cycle which includes every point of a graph G is called a Hamilton cycle of G. 1. Draw the complete graph K5. Find one Hamilton cycle in K5. 2. Does every complete graph have a Hamilton cycle? Explain. 3

Larson, Craig E.

6

Isotopic Analysis At San Juan Volcanic Field Area (Larson & Jr, 1986) |  

Open Energy Info (EERE)

Isotopic Analysis At San Juan Volcanic Field Area (Larson & Jr, 1986) Isotopic Analysis At San Juan Volcanic Field Area (Larson & Jr, 1986) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Isotopic Analysis- Rock At San Juan Volcanic Field Area (Larson & Jr, 1986) Exploration Activity Details Location San Juan Volcanic Field Area Exploration Technique Isotopic Analysis- Rock Activity Date Usefulness not indicated DOE-funding Unknown Notes Oxygen isotopes. References Peter B. Larson, Hugh P. Taylor Jr (1986) An Oxygen Isotope Study Of Hydrothermal Alteration In The Lake City Caldera, San Juan Mountains, Colorado Retrieved from "http://en.openei.org/w/index.php?title=Isotopic_Analysis_At_San_Juan_Volcanic_Field_Area_(Larson_%26_Jr,_1986)&oldid=687474" Categories: Exploration Activities

7

Garnet Wind | Open Energy Information  

Open Energy Info (EERE)

Garnet Wind Garnet Wind Jump to: navigation, search Name Garnet Wind Facility Garnet Wind Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Azusa Light & Water Developer Azusa Light & Water Energy Purchaser Azusa Light & Water Location Palm Springs CA Coordinates 33.918267°, -116.701076° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":33.918267,"lon":-116.701076,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

8

Rock Sampling At Seven Mile Hole Area (Larson, Et Al., 2009) | Open Energy  

Open Energy Info (EERE)

Seven Mile Hole Area (Larson, Et Al., 2009) Seven Mile Hole Area (Larson, Et Al., 2009) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Rock Sampling At Seven Mile Hole Area (Larson, Et Al., 2009) Exploration Activity Details Location Seven Mile Hole Area Exploration Technique Rock Sampling Activity Date Usefulness not indicated DOE-funding Unknown Notes The distribution of hydrothermally altered rocks was mapped over about 1 km2 in the Sevenmile Hole area. Two to four kilogram hand samples located by a handheld GPS were collected from many outcrops for laboratory analyses References Peter B. Larson, Allison Phillips, David John, Michael Cosca, Chad Pritchard, Allen Andersen, Jennifer Manion (2009) A Preliminary Study Of Older Hot Spring Alteration In Sevenmile Hole, Grand Canyon Of The

9

Field Mapping At Seven Mile Hole Area (Larson, Et Al., 2009) | Open Energy  

Open Energy Info (EERE)

Seven Mile Hole Area (Larson, Et Al., 2009) Seven Mile Hole Area (Larson, Et Al., 2009) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Field Mapping At Seven Mile Hole Area (Larson, Et Al., 2009) Exploration Activity Details Location Seven Mile Hole Area Exploration Technique Field Mapping Activity Date Usefulness not indicated DOE-funding Unknown Notes The distribution of hydrothermally altered rocks was mapped over about 1 km2 in the Sevenmile Hole area. Two to four kilogram hand samples located by a handheld GPS were collected from many outcrops K735for laboratory analyses References Peter B. Larson, Allison Phillips, David John, Michael Cosca, Chad Pritchard, Allen Andersen, Jennifer Manion (2009) A Preliminary Study Of Older Hot Spring Alteration In Sevenmile Hole, Grand Canyon Of The

10

U.S. Energy Secretary Steven Chu, U.S. Representatives Larson and Courtney  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Steven Chu, U.S. Representatives Larson and Steven Chu, U.S. Representatives Larson and Courtney to Visit Research Center in East Hartford U.S. Energy Secretary Steven Chu, U.S. Representatives Larson and Courtney to Visit Research Center in East Hartford February 3, 2011 - 12:00am Addthis WASHINGTON, DC - Tomorrow, Friday, February 4, U.S. Secretary of Energy Steven Chu will travel to East Hartford, Conn. to visit United Technologies Research Center, which has received funding from the Department for several transformational clean energy research projects. The Secretary is visiting UTC to highlight the importance of investing in innovation and clean energy to put people back to work, grow the economy, and win the future. He will be joined by U.S. Representatives John Larson and Joe Courtney for a tour

11

Garnet: Common Mineral, Uncommonly Useful:  

Science Journals Connector (OSTI)

...possible because 29Si's nuclear quantum states and their energy splittings...and others may follow in the future. The more notable garnets and...findings are expected in the future. ACKNOWLEDGMENTS: I thank...Science Fund and the Toyota Motor Corporation are gratefully acknowledged...

Charles A. Geiger

12

Isotopic Analysis At Seven Mile Hole Area (Larson, Et Al., 2009) | Open  

Open Energy Info (EERE)

2009) 2009) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Isotopic Analysis- Rock At Seven Mile Hole Area (Larson, Et Al., 2009) Exploration Activity Details Location Seven Mile Hole Area Exploration Technique Isotopic Analysis- Rock Activity Date Usefulness useful DOE-funding Unknown Notes The 40Ar/39Ar data were collected from a single fragment of alunite from sample Y-05-25, approximately 0.5 cm3 in size. References Peter B. Larson, Allison Phillips, David John, Michael Cosca, Chad Pritchard, Allen Andersen, Jennifer Manion (2009) A Preliminary Study Of Older Hot Spring Alteration In Sevenmile Hole, Grand Canyon Of The Yellowstone River, Yellowstone Caldera, Wyoming Retrieved from "http://en.openei.org/w/index.php?title=Isotopic_Analysis_At_Seven_Mile_Hole_Area_(Larson,_Et_Al.,_2009)&oldid=68747

13

Hydrothermal alkali metal recovery process  

DOE Patents (OSTI)

In a coal gasification operation or similar conversion process carried out in the presence of an alkali metal-containing catalyst wherein solid particles containing alkali metal residues are produced, alkali metal constituents are recovered from the particles by treating them with a calcium or magnesium-containing compound in the presence of water at a temperature between about 250.degree. F. and about 700.degree. F. and in the presence of an added base to establish a pH during the treatment step that is higher than would otherwise be possible without the addition of the base. During the treating process the relatively high pH facilitates the conversion of water-insoluble alkali metal compounds in the alkali metal residues into water-soluble alkali metal constituents. The resultant aqueous solution containing water-soluble alkali metal constituents is then separated from the residue solids, which consist of the treated particles and any insoluble materials formed during the treatment step, and recycled to the gasification process where the alkali metal constituents serve as at least a portion of the alkali metal constituents which comprise the alkali metal-containing catalyst. Preferably, the base that is added during the treatment step is an alkali metal hydroxide obtained by water washing the residue solids produced during the treatment step.

Wolfs, Denise Y. (Houston, TX); Clavenna, Le Roy R. (Baytown, TX); Eakman, James M. (Houston, TX); Kalina, Theodore (Morris Plains, NJ)

1980-01-01T23:59:59.000Z

14

E-Print Network 3.0 - aluminum silicate garnet Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

garnet 2. Silicate garnets close to the natural mineral andradite... Accommodation of Uranium into the Garnet ... Source: Utsunomiya, Satoshi - Department of Geological...

15

Rock Sampling At San Juan Volcanic Field Area (Larson & Jr, 1986) | 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 » Rock Sampling At San Juan Volcanic Field Area (Larson & Jr, 1986) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Rock Sampling At San Juan Volcanic Field Area (Larson & Jr, 1986) Exploration Activity Details Location San Juan Volcanic Field Area Exploration Technique Rock Sampling Activity Date Usefulness not indicated DOE-funding Unknown Notes More than 300 samples were collected from within and adjacent to the Lake City caldera. All specimens consist of single hand samples, approximately 1 kg in size. Care was taken to avoid oxidized or weathered rocks. Twenty

16

Purification of alkali metal nitrates  

DOE Patents (OSTI)

A process is disclosed for removing heavy metal contaminants from impure alkali metal nitrates containing them. The process comprises mixing the impure nitrates with sufficient water to form a concentrated aqueous solution of the impure nitrates, adjusting the pH of the resulting solution to within the range of between about 2 and about 7, adding sufficient reducing agent to react with heavy metal contaminants within said solution, adjusting the pH of the solution containing reducing agent to effect precipitation of heavy metal impurities and separating the solid impurities from the resulting purified aqueous solution of alkali metal nitrates. The resulting purified solution of alkali metal nitrates may be heated to evaporate water therefrom to produce purified molten alkali metal nitrate suitable for use as a heat transfer medium. If desired, the purified molten form may be granulated and cooled to form discrete solid particles of alkali metal nitrates.

Fiorucci, Louis C. (Hamden, CT); Gregory, Kevin M. (Woodridge, IL)

1985-05-14T23:59:59.000Z

17

Upgrading platform using alkali metals  

DOE Patents (OSTI)

A process for removing sulfur, nitrogen or metals from an oil feedstock (such as heavy oil, bitumen, shale oil, etc.) The method involves reacting the oil feedstock with an alkali metal and a radical capping substance. The alkali metal reacts with the metal, sulfur or nitrogen content to form one or more inorganic products and the radical capping substance reacts with the carbon and hydrogen content to form a hydrocarbon phase. The inorganic products may then be separated out from the hydrocarbon phase.

Gordon, John Howard

2014-09-09T23:59:59.000Z

18

E-Print Network 3.0 - aluminum garnet activated Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

the rare earth - aluminum - gal- lium garnets was restricted to low... Accommodation of Uranium into the Garnet Structure Sergey V.Yudintsev1 , Marya I. Lapina1... is garnet-type...

19

Electrolytic method to make alkali alcoholates using ion conducting alkali electrolyte/separator  

DOE Patents (OSTI)

Alkali alcoholates, also called alkali alkoxides, are produced from alkali metal salt solutions and alcohol using a three-compartment electrolytic cell. The electrolytic cell includes an anolyte compartment configured with an anode, a buffer compartment, and a catholyte compartment configured with a cathode. An alkali ion conducting solid electrolyte configured to selectively transport alkali ions is positioned between the anolyte compartment and the buffer compartment. An alkali ion permeable separator is positioned between the buffer compartment and the catholyte compartment. The catholyte solution may include an alkali alcoholate and alcohol. The anolyte solution may include at least one alkali salt. The buffer compartment solution may include a soluble alkali salt and an alkali alcoholate in alcohol.

Joshi, Ashok V. (Salt Lake City, UT); Balagopal, Shekar (Sandy, UT); Pendelton, Justin (Salt Lake City, UT)

2011-12-13T23:59:59.000Z

20

Compound and Elemental Analysis At Seven Mile Hole Area (Larson, Et Al.,  

Open Energy Info (EERE)

2009) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Compound and Elemental Analysis At Seven Mile Hole Area (Larson, Et Al., 2009) Exploration Activity Details Location Seven Mile Hole Area Exploration Technique Compound and Elemental Analysis Activity Date Usefulness not indicated DOE-funding Unknown Notes Standard X-ray diffractometer (XRD) analyses were used in the laboratory to confirm the PIMA mineral identifications and to look for minerals that have poor SWIR response (e.g., quartz and feldspars) or were not present in great enough concentrations to be detected by the PIMA. Petrographic and electron microprobe analyses of selected samples were conducted in the laboratories of the GeoAnalytical Laboratory at Washington State

Note: This page contains sample records for the topic "larson garnet alkali" 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

Structural relaxation around substitutional Cr3+ in pyrope garnet  

E-Print Network (OSTI)

the spinel- garnet transformation -a major phase boundary in the Earth's upper mantle- to pressures as high shells of neighbors (Mg and Si) relax only partially. Site relaxation is accommodated by strain diamonds (Irifune et al. 1982). In the garnet structure (Novak and Gibbs 1971), Cr3+ is small enough

22

E-Print Network 3.0 - alkali metal nitrate Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

METAL-ALKALI HALIDE Summary: CONDUCTIVITY OF ALKALI METAL-ALKALI HALIDE SOLUTIONS R. GILBERT and G. J. MORGAN The Physics Department... to liquid alkali metals electrons are...

23

Regenerable activated bauxite adsorbent alkali monitor probe  

DOE Patents (OSTI)

A regenerable activated bauxite adsorber alkali monitor probe for field applications to provide reliable measurement of alkali-vapor concentration in combustion gas with special emphasis on pressurized fluidized-bed combustion (PFBC) off-gas. More particularly, the invention relates to the development of a easily regenerable bauxite adsorbent for use in a method to accurately determine the alkali-vapor content of PFBC exhaust gases. 6 figs.

Lee, S.H.D.

1992-12-22T23:59:59.000Z

24

Geothermometry At Gabbs Alkali Flat Area (Kratt, Et Al., 2008...  

Open Energy Info (EERE)

Alkali Flat Area (Kratt, Et Al., 2008) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermometry At Gabbs Alkali Flat Area (Kratt, Et Al.,...

25

Diode pumped alkali vapor fiber laser  

DOE Patents (OSTI)

A method and apparatus is provided for producing near-diffraction-limited laser light, or amplifying near-diffraction-limited light, in diode pumped alkali vapor photonic-band-gap fiber lasers or amplifiers. Laser light is both substantially generated and propagated in an alkali gas instead of a solid, allowing the nonlinear and damage limitations of conventional solid core fibers to be circumvented. Alkali vapor is introduced into the center hole of a photonic-band-gap fiber, which can then be pumped with light from a pump laser and operated as an oscillator with a seed beam, or can be configured as an amplifier.

Payne, Stephen A. (Castro Valley, CA); Beach, Raymond J. (Livermore, CA); Dawson, Jay W. (Livermore, CA); Krupke, William F. (Pleasanton, CA)

2006-07-26T23:59:59.000Z

26

Diode pumped alkali vapor fiber laser  

DOE Patents (OSTI)

A method and apparatus is provided for producing near-diffraction-limited laser light, or amplifying near-diffraction-limited light, in diode pumped alkali vapor photonic-band-gap fiber lasers or amplifiers. Laser light is both substantially generated and propagated in an alkali gas instead of a solid, allowing the nonlinear and damage limitations of conventional solid core fibers to be circumvented. Alkali vapor is introduced into the center hole of a photonic-band-gap fiber, which can then be pumped with light from a pump laser and operated as an oscillator with a seed beam, or can be configured as an amplifier.

Payne, Stephen A. (Castro Valley, CA); Beach, Raymond J. (Livermore, CA); Dawson, Jay W. (Livermore, CA); Krupke, William F. (Pleasanton, CA)

2007-10-23T23:59:59.000Z

27

Fate of alkalis in coal combustion  

SciTech Connect

The results of these measurements and experiments provide a plausible way to begin an explanation for the distribution of alkali in the ash particulates. To summarize: (1) under typical coal combustion conditions in an atmosphere rich in CO/sub 2/ and/or SO/sub 2/, the alkalis in the organic fraction do not vaporize but remain bound in the ash as stable carbonates or sulfates; (2) the alkalis in the inorganic fraction diffuse to the surface producing enrichment by a factor of about 13 to a depth of about 100A. The results, however, do not provide conclusive evidence about the fate of the alkalis. The effect of water vapor in the combustion stream has not yet been studied. Clearly, water could have an important effect on the vaporization process. Furthermore, the reasoning we have followed to explain the absence of alkali enrichment in the submicron particles requires that the volatilization of the alkalis in both the organic and inorganic fraction not be significant (say less than 20%).

Stewart, G.W. (Aerodyne Research, Inc., Bedford, MA); Stinespring, C.D.; Davidovits, P.

1982-01-01T23:59:59.000Z

28

Camenen, B., and Larson, M. 2007. A Total Load Formula for the Nearshore. Proceedings Coastal Sediments '07 Conference, ASCE Press, Reston, VA, 56-67.  

E-Print Network (OSTI)

Sediments '07 Conference, ASCE Press, Reston, VA, 56-67. A TOTAL LOAD FORMULA FOR THE NEARSHORE Benoit.larson@tvr.lth.se Abstract: A total load sediment transport formula based on recent studies on the bed load and suspended qualify and quantify the current-related and wave-related sediment transport. It appeared

US Army Corps of Engineers

29

Alteration of alkali reactive aggregates autoclaved in different alkali solutions and application to alkali-aggregate reaction in concrete  

SciTech Connect

Surface alteration of typical aggregates with alkali-silica reactivity and alkali-carbonate reactivity, i.e. Spratt limestone (SL) and Pittsburg dolomitic limestone (PL), were studied by XRD and SEM/EDS after autoclaving in KOH, NaOH and LiOH solutions at 150 deg. C for 150 h. The results indicate that: (1) NaOH shows the strongest attack on both ASR and ACR aggregates, the weakest attack is with LiOH. For both aggregates autoclaved in different alkali media, the crystalline degree, morphology and distribution of products are quite different. More crystalline products are formed on rock surfaces in KOH than that in NaOH solution, while almost no amorphous product is formed in LiOH solution; (2) in addition to dedolomitization of PL in KOH, NaOH and LiOH solutions, cryptocrystalline quartz in PL involves in reaction with alkaline solution and forms typical alkali-silica product in NaOH and KOH solutions, but forms lithium silicate (Li{sub 2}SiO{sub 3}) in LiOH solution; (3) in addition to massive alkali-silica product formed in SL autoclaved in different alkaline solutions, a small amount of dolomite existing in SL may simultaneously dedolomitize and possibly contribute to expansion; (4) it is promising to use the duplex effect of LiOH on ASR and ACR to distinguish the alkali-silica reactivity and alkali-carbonate reactivity of aggregate when both ASR and ACR might coexist.

Lu Duyou [College of Materials Science and Engineering, Nanjing University of Technology, 5 New Model Road, Nanjing, Jiangsu, 210009 (China) and ICON/CANMET, Natural Resources Canada, 405 Rochester Street, Ottawa, ON, K1A 0G1 (Canada)]. E-mail: duyoulu@njut.edu.cn; Mei Laibao [College of Materials Science and Engineering, Nanjing University of Technology, 5 New Model Road, Nanjing, Jiangsu, 210009 (China); Xu Zhongzi [College of Materials Science and Engineering, Nanjing University of Technology, 5 New Model Road, Nanjing, Jiangsu, 210009 (China); Tang Mingshu [College of Materials Science and Engineering, Nanjing University of Technology, 5 New Model Road, Nanjing, Jiangsu, 210009 (China); Fournier, Benoit [ICON/CANMET, Natural Resources Canada, 405 Rochester Street, Ottawa, ON, K1A 0G1 (Canada)

2006-06-15T23:59:59.000Z

30

Palaeogeotherms: implications of disequilibrium in garnet Iherzolite xenoliths (reply)  

Science Journals Connector (OSTI)

... Carswell that the similarity between the temperature dependence of the garnet-orthopyroxene geobarometer2 and likely geothermal gradients makes it difficult to use this reaction to distinguish between the effects of differences ... and temperature-pressure distributions obtained from samples which have equilibrated at different depths along such geothermal gradients.

DONALD G. FRASER; P. J. LAWLESS

1978-12-14T23:59:59.000Z

31

Experimental Evaluation of GarnetClinopyroxene Thermometer Daisuke NAKAMURA  

E-Print Network (OSTI)

Experimental Evaluation of Garnet­Clinopyroxene Thermometer Daisuke NAKAMURA 1 , Takao HIRAJIMA 1(Grt)­clinopyroxene(Cpx) thermometer have been proposed and widely applied to natural rocks for estimating metamorphic temperature (T), but a serious controversy exists on this thermometer. Pattison & Newton (1989) (PN89) performed reversal

Nakamura, Daisuke

32

Hydrogen Release Studies of Alkali Metal Amidoboranes. | EMSL  

NLE Websites -- All DOE Office Websites (Extended Search)

Release Studies of Alkali Metal Amidoboranes. Hydrogen Release Studies of Alkali Metal Amidoboranes. Abstract: A series of metal amido boranes LiNH2BH3 (LAB), NaNH2BH3 (SAB),...

33

Selection of non-adsorbing alkali components  

SciTech Connect

This project consists of three phases of laboratory experimental study. In phase I (screening), eight candidate materials, 304SS (serves as a base material for comparison), Hastelloy C-276, Hastelloy X, Haynes No. 188, Allonized 304SS, Pt-coated 304SS, and ceramic-coated 304SS, will be subjected to atmospheric TGA study under the simulated PFBC (oxidizing) environment with and without alkali vapor doping. Each candidate material will be evaluated for its resistance toward alkali-vapor capture. In addition, a post-test metallographic characterization of the sample will be performed to obtain a better understanding of the alkali capture mechanism and material behavior. The material(s) with little or no alkali-vapor adsorption will be selected as the promising material(s) for the Phase II study. In Phase II, the promising material(s) will be further tested in the TGA under elevated pressure to simulate the PFBC environment (in terms of temperature, pressure, and gas composition). The effect of pressure on the extent of alkali-vapor adsorption will be evaluated, and the test samples will be metallographically characterized. The most promising candidate material(s) will be identified and recommended for further tesfing in the actual PFBC environment. In Phase III, four materials will be selected from the eight candidate materials screened in the PFBC environment and will be evaluated for their alkali-vapor capture by atmospheric TGA under the coal gasification fuel gas (reducing) environment. The tested samples will also be metallographically characterized. The most promising material(s) will be identified and recommended for further testing in the actual coal gasification environment.

Lee, S.H.D.; Natesan, K.; Swift, W.M.

1992-11-01T23:59:59.000Z

34

Alkali resistant optical coatings for alkali lasers and methods of production thereof  

DOE Patents (OSTI)

In one embodiment, a multilayer dielectric coating for use in an alkali laser includes two or more alternating layers of high and low refractive index materials, wherein an innermost layer includes a thicker, >500 nm, and dense, >97% of theoretical, layer of at least one of: alumina, zirconia, and hafnia for protecting subsequent layers of the two or more alternating layers of high and low index dielectric materials from alkali attack. In another embodiment, a method for forming an alkali resistant coating includes forming a first oxide material above a substrate and forming a second oxide material above the first oxide material to form a multilayer dielectric coating, wherein the second oxide material is on a side of the multilayer dielectric coating for contacting an alkali.

Soules, Thomas F; Beach, Raymond J; Mitchell, Scott C

2014-11-18T23:59:59.000Z

35

128 CEREAL CHEMISTRY Effects of Alkali Debranning, Roller Mill Cracking and Gap Setting, and Alkali  

E-Print Network (OSTI)

was obtained when steeping corn in 0.5% NaOH for 1 hr at 45�C. Alkali corn wet-milling has been studied Steeping Conditions on Milling Yields from a Dent Corn Hybrid P. Yang,1 L. Du,1,2 D. L. Wang,1 B. H. Li,1 K was significantly affected by all three main unit oper- ations in alkali wet-milling (debranning, roller milling

36

A Primitive Alkali Basaltic Stratovolcano And Associated Eruptive Centres,  

Open Energy Info (EERE)

Primitive Alkali Basaltic Stratovolcano And Associated Eruptive Centres, Primitive Alkali Basaltic Stratovolcano And Associated Eruptive Centres, Northwestern Spitsbergen- Volcanology And Tectonic Significance Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Primitive Alkali Basaltic Stratovolcano And Associated Eruptive Centres, Northwestern Spitsbergen- Volcanology And Tectonic Significance Details Activities (0) Areas (0) Regions (0) Abstract: Three Quaternary volcanic centres (Sverrefjell, Sigurdfjell and Halvdanpiggen) in northwestern Spitsbergen formed by off-ridge alkali basaltic volcanism associated with nearby ocean-floor spreading and subsequent tectonism. The Sverrefjell volcano is a unique stratovolcano constructed of primitive alkali basaltic pyroclastics with subordinate lavas. About 15-20 vol.% of this volcanic (and the other centres) comprises

37

Alkali metal recovery from carbonaceous material conversion process  

DOE Patents (OSTI)

In a coal gasification operation or similar conversion process carried out in the presence of an alkali metal-containing catalyst wherein solid particles containing alkali metal residues are produced in the gasifier or similar reaction zone, alkali metal constitutents are recovered from the particles by withdrawing and passing the particles from the reaction zone to an alkali metal recovery zone in the substantial absence of molecular oxygen and treating the particles in the recovery zone with water or an aqueous solution in the substantial absence of molecular oxygen. The solution formed by treating the particles in the recovery zone will contain water-soluble alkali metal constituents and is recycled to the conversion process where the alkali metal constituents serve as at least a portion of the alkali metal constituents which comprise the alkali metal-containing catalyst. Preventing contact of the particles with oxygen as they are withdrawn from the reaction zone and during treatment in the recovery zone avoids the formation of undesirable alkali metal constituents in the aqueous solution produced in the recovery zone and insures maximum recovery of water-soluble alkali metal constituents from the alkali metal residues.

Sharp, David W. (Seabrook, TX); Clavenna, LeRoy R. (Baytown, TX); Gorbaty, Martin L. (Fanwood, NJ); Tsou, Joe M. (Galveston, TX)

1980-01-01T23:59:59.000Z

38

E-Print Network 3.0 - aluminum garnet laser Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

eclogite of the Western Gneiss Summary: Combined thermodynamic and rare earth element modelling of garnet growth during subduction... Keywords ultrahigh-pressure...

39

E-Print Network 3.0 - aluminium garnet laser Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

eclogite of the Western Gneiss Summary: Combined thermodynamic and rare earth element modelling of garnet growth during subduction... Keywords ultrahigh-pressure...

40

E-Print Network 3.0 - aluminum garnet yag Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

Collection: Materials Science 49 A nearly ideal phosphor-converted white light-emitting diode Steven C. Allen and Andrew J. Steckla Summary: aluminum garnet YAG :Ce powder...

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


41

E-Print Network 3.0 - aluminum garnet crystals Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

Geological Sciences, University of Michigan Collection: Geosciences 10 Accommodation of Uranium into the Garnet Structure Sergey V.Yudintsev1 Summary: of tetravalent ions (Ce4+...

42

Single-crystal elasticity of grossular-and almandine-rich garnets to 11 GPa by Brillouin  

E-Print Network (OSTI)

to 11 GPa in a diamond anvil cell. The experiments were carried out using a 16:3:1 methanol is the dissolution of pyroxene into the garnet structure producing Al-deficient garnets (majorite) that are stable

Duffy, Thomas S.

43

Alteration of alkali reactive aggregates autoclaved in different alkali solutions and application to alkali-aggregate reaction in concrete (II) expansion and microstructure of concrete microbar  

SciTech Connect

The effect of the type of alkalis on the expansion behavior of concrete microbars containing typical aggregate with alkali-silica reactivity and alkali-carbonate reactivity was studied. The results verified that: (1) at the same molar concentration, sodium has the strongest contribution to expansion due to both ASR and ACR, followed by potassium and lithium; (2) sufficient LiOH can completely suppress expansion due to ASR whereas it can induce expansion due to ACR. It is possible to use the duplex effect of LiOH on ASR and ACR to clarify the ACR contribution when ASR and ACR may coexist. It has been shown that a small amount of dolomite in the fine-grained siliceous Spratt limestone, which has always been used as a reference aggregate for high alkali-silica reactivity, might dedolomitize in alkaline environment and contribute to the expansion. That is to say, Spratt limestone may exhibit both alkali-silica and alkali-carbonate reactivity, although alkali-silica reactivity is predominant. Microstructural study suggested that the mechanism in which lithium controls ASR expansion is mainly due to the favorable formation of lithium-containing less-expansive product around aggregate particles and the protection of the reactive aggregate from further attack by alkalis by the lithium-containing product layer.

Lu Duyou [College of Materials Science and Engineering, Nanjing University of Technology, 5 New Model Road, Nanjing, 210009 (China)]. E-mail: duyoulu@njut.edu.cn; Mei Laibao [College of Materials Science and Engineering, Nanjing University of Technology, 5 New Model Road, Nanjing, 210009 (China); Xu Zhongzi [College of Materials Science and Engineering, Nanjing University of Technology, 5 New Model Road, Nanjing, 210009 (China); Tang Mingshu [College of Materials Science and Engineering, Nanjing University of Technology, 5 New Model Road, Nanjing, 210009 (China); Mo Xiangyin [Analysis and Test Central, Nanjing Normal University, 122 Ninghai Road, Nanjing, 210097 (China); Fournier, Benoit [ICON/CANMET, Natural Resources Canada, 405 Rochester Street, Ottawa, ON, K1A 0G1 (Canada)

2006-06-15T23:59:59.000Z

44

High temperature alkali corrosion of ceramics in coal gas  

SciTech Connect

High temperature alkali corrosion has been known to cause premature failure of ceramic components used in advanced high temperature coal combustion systems such as coal gasification and clean-up, coal fired gas turbines, and high efficiency heat engines. The objective of this research is to systematically evaluate the alkali corrosion resistance of the most commonly used structural ceramics including silicon carbide, silicon nitride, cordierite, mullite, alumina, aluminum titanate, zirconia, and fireclay glass. The study consists of identification of the alkali reaction products (phase equilibria) and the kinetics of the alkali reactions as a function of temperature and time.

Pickrell, G.R.; Sun, T.; Brown, J.J.

1992-05-27T23:59:59.000Z

45

Effect of alkalis and sulfates on Portland cement systems.  

E-Print Network (OSTI)

??The effect of the sulfates and alkalis on the durability of Portland cement systems was investigated through a series of cube and prism mixes. Durability (more)

Halaweh, Mahmoud

2006-01-01T23:59:59.000Z

46

ALKALI AGGREGATE REACTION AND DELAYED ETTRINGITE FORMATION: COMMON FEATURES AND DIFFERENCES  

E-Print Network (OSTI)

ALKALI AGGREGATE REACTION AND DELAYED ETTRINGITE FORMATION: COMMON FEATURES AND DIFFERENCES Renaud Department, Paris, France Abstract Alkali-Aggregate Reaction (AAR) and Delayed Ettringite Formation (DEF effects 1 INTRODUCTION Alkali Aggregate Reaction (AAR) and Delayed Ettringite Formation (DEF) are internal

Paris-Sud XI, Université de

47

Superatoms and their assemblies based on alkali and super-alkali motifs  

Science Journals Connector (OSTI)

It is shown that chosen stable clusters can mimic the chemical behavior of atoms in the periodic table and hence can be regarded as superatoms forming a third dimension of the periodic table. The review discusses the developments leading to the superatom ... Keywords: Superatoms, super-alkali clusters, superhalogens

P. Clayborne; N. O. Jones; A. C. Reber; J. U. Reveles; M. C. Qian; S. N. Khanna

2007-12-01T23:59:59.000Z

48

E-Print Network 3.0 - alkali metal picrates Sample Search Results  

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layers of alkali metals. 1. Introduction Optical... and Cu 6 by Chen et al. The adsorption of alkali atoms on transition metals is of great importance... . Secondharmonic...

49

E-Print Network 3.0 - alkali-aggregate reactions strengthening...  

NLE Websites -- All DOE Office Websites (Extended Search)

Durability Issues K.W. Neale1 Summary: conducted on the FRP rehabilitation of concrete beams suffering from alkali aggregate reaction damage... to alkali aggregate reactions. FRP...

50

Studies of non-proportionality in alkali halide and strontium iodide scintillators using SLYNCI  

E-Print Network (OSTI)

in Alkali Halide and Strontium Iodide Scintillators Usingof europium doping level in strontium iodide. Directions offor several alkali halides, strontium iodide, and lanthanum

Ahle, Larry

2011-01-01T23:59:59.000Z

51

E-Print Network 3.0 - alkali halide crystals Sample Search Results  

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STUDIES IN ALKALI HALIDES Summary: of the alkali halides (KC1) the introduction of vacancies by thermal quenching of unirra- diated crystals has... ANNIHILATION STUDIES IN...

52

E-Print Network 3.0 - alkali metal hydrides Sample Search Results  

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Hf for selected alkali metal hydrides, alkaline earth metal hydrides, transition metal hydrides... of binary hydrides based on alkali metals, alkaline earth ... Source:...

53

Tuning of the Metal-Insulator Transition via Alkali Adsorption  

NLE Websites -- All DOE Office Websites (Extended Search)

Tuning of the Metal-Insulator Transition via Alkali Adsorption Print Tuning of the Metal-Insulator Transition via Alkali Adsorption Print Turning a material from an insulator to a metal, or vice versa, by light irradiation, exposure to electric or magnetic fields, or applying small changes in temperature, pressure, or doping-such intriguing control of a material's electronic properties is possible by exploiting strongly interacting or "correlated" electrons. Now a team of researchers from the University of Kiel in Germany and the ALS has found a novel, surprising way to continuously transform a layered metallic transition-metal compound, TaS2, into an insulator. Using angle-resolved photoemission spectroscopy (ARPES), they have demonstrated that adsorption of alkali atoms onto this material's surface gradually makes it more insulating, although in general, alkali adsorption should lead to more metallic behavior, as alkali atoms easily give away their loosely bound outermost electron.

54

Treatment of a severe alkali burn  

Science Journals Connector (OSTI)

The case history of a 20-year-old male patient who sustained an 85 per cent total body surface area alkali burn to his skin, after falling into a caustic lime pit, is reported. Considerable problems regarding the correct estimate of burn wound depth, predominant location of the deepest burn on the posterior half of the body, appropriate wound coverage, and lack of sufficient skin graft donor sites required a complex treatment plan. Excisions to fascia and intradermal debridement were required to achieve an appropriate bed for wound closure. Five per cent mafenide acetate solution (Sulfamylon) was applied to prevent burn wound sepsis. Human allografts and Biobrane were used extensively to achieve temporary wound closure, to provide mechanical protection of freshly autografted wounds, and to prevent desiccation following application of cultured epidermal autografts on to debrided wounds and split thickness skin grafted donor sites. The case illustrates a number of problems associated with the evaluation and treatment of patients suffering severe alkali burns, and demonstrates the implementation of both established and evolving technologies in the management of these injuries.

D. Erdmann; J. Hussmann; J.O. Kucan

1996-01-01T23:59:59.000Z

55

Ferromagnetic resonance of sputtered yttrium iron garnet nanometer films  

SciTech Connect

Growth of nm-thick yttrium iron garnet (YIG) films by sputtering and ferromagnetic resonance (FMR) properties in the films were studied. The FMR linewidth of the YIG film decreased as the film thickness was increased from several nanometers to about 100?nm. For films with very smooth surfaces, the linewidth increased linearly with frequency. In contrast, for films with big grains on the surface, the linewidth-frequency response was strongly nonlinear. Films in the 726?nm thickness range showed a surface roughness between 0.1?nm and 0.4?nm, a 9.48-GHz FMR linewidth in the 610?Oe range, and a damping constant of about 0.001.

Liu, Tao [Department of Physics, Colorado State University, Fort Collins, Colorado 80523 (United States); State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054 (China); Chang, Houchen; Sun, Yiyan; Kabatek, Michael; Wu, Mingzhong, E-mail: mwu@lamar.colostate.edu [Department of Physics, Colorado State University, Fort Collins, Colorado 80523 (United States); Vlaminck, Vincent; Hoffmann, Axel [Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States); Deng, Longjiang [State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054 (China)

2014-05-07T23:59:59.000Z

56

Controlled in-situ dissolution of an alkali metal  

DOE Patents (OSTI)

A method for the controllable dissolution of one or more alkali metals from a vessel containing a one or more alkali metals and/or one or more partially passivated alkali metals. The vessel preferably comprising a sodium, NaK or other alkali metal-cooled nuclear reactor that has been used. The alkali metal, preferably sodium, potassium or a combination thereof, in the vessel is exposed to a treatment liquid, preferably an acidic liquid, more preferably citric acid. Preferably, the treatment liquid is maintained in continuous motion relative to any surface of unreacted alkali metal with which the treatment liquid is in contact. The treatment liquid is preferably pumped into the vessel containing the one or more alkali metals and the resulting fluid is extracted and optionally further processed. Preferably, the resulting off-gases are processed by an off-gas treatment system and the resulting liquids are processed by a liquid disposal system. In one preferred embodiment, an inert gas is pumped into the vessel along with the treatment liquid.

Jones, Jeffrey Donald; Dooley, Kirk John; Tolman, David Donald

2012-09-11T23:59:59.000Z

57

Super stable garnet ceramics may be ideal for high-energy lithium...  

NLE Websites -- All DOE Office Websites (Extended Search)

Super stable garnet ceramics may be ideal for high-energy lithium batteries ORNL researchers used scanning transmission electron microscopy to take an atomic-level look at a cubic...

58

4.2.3.4 Magnetic neutron scattering in terbium, holmium and dysprosium gallium garnets  

Science Journals Connector (OSTI)

This document is part of Subvolume E Garnets of Volume 27 Magnetic Properties of Non-Metallic Inorganic Compounds Based on Transition Elements of Landolt-Brnstein - Group III Condensed Matter.

Z. A. Kazei; N. P. Kolmakova; V. I. Sokolov

1991-01-01T23:59:59.000Z

59

High temperature alkali corrosion of ceramics in coal gas  

SciTech Connect

The high temperature alkali corrosion kinetics of SiC have been systematically investigated from 950 to 1100[degrees]C at 0.63 vol % alkali vapor concentration. The corrosion rate in the presence of alkaliis approximately 10[sup 4] to 10[sup 5] times faster than the oxidation rate of SiC in air. The activation energy associated with the alkali corrosion is 406 kJ/mol, indicating a highly temperature-dependent reaction rate. The rate-controlling step of the overall reaction is likely to be the dissolution of silica in the sodium silicate liquid, based on the oxygen diffusivity data.

Pickrell, G.R.; Sun, T.; Brown, J.J.

1992-02-24T23:59:59.000Z

60

Sorption and diffusion of helium in garnet: implications for volatile tracing and dating  

Science Journals Connector (OSTI)

We present data on He sorption in garnet obtained by loading garnet samples with He at 25010 bar in the temperature range 800990C. For this temperature range we find a three-fold decrease in He sorption from 2.1 10?5 (800C) to 0.72 10?5 cm3 STPg?1 bar?1 (990C). We use the sorption data of partially saturated samples to obtain the activation energy (Ea = 660120190 kJ/mol) and frequency factor (D0 = 1015.6(+8,?5.2) cm2/s) for He diffusion in garnet. The results of our study suggest that garnet is probably one of the most retentive silicate minerals for He, which is in agreement with its very low ion porosity. The high retentivity results in a high closure temperature (Tc) for the (U + Th)He system. For cooling rates as low as 0.11C/Ma, Tc lies between 590 and 630C. Accordingly, (U + Th)He dating of garnet may provide information about the medium to high temperature cooling path of a rock at the lower end of the temperature range of currently used isotopic systems in garnet. In addition, the high retentivity for He makes garnet a potentially useful mineral in the field of exposure age dating. Currently, it is the only-known common silicate mineral occurring in upper crustal rocks which probably retains cosmogenic noble gases under all climatic conditions. For geochemical studies using noble gases as tracers for geofluids, garnet is a perfect container if temperatures never exceed 600C; that is, all originally trapped noble gases are quantitatively retained.

T.J. Dunai; K. Roselieb

1996-01-01T23:59:59.000Z

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


61

Gabbs Alkali Flat Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

Gabbs Alkali Flat Geothermal Area Gabbs Alkali Flat Geothermal Area (Redirected from Gabbs Alkali Flat Area) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermal Resource Area: Gabbs Alkali Flat Geothermal Area Contents 1 Area Overview 2 History and Infrastructure 3 Regulatory and Environmental Issues 4 Exploration History 5 Well Field Description 6 Geology of the Area 7 Geofluid Geochemistry 8 NEPA-Related Analyses (0) 9 Exploration Activities (2) 10 References Area Overview Geothermal Area Profile Location: Nevada Exploration Region: Walker-Lane Transition Zone Geothermal Region GEA Development Phase: 2008 USGS Resource Estimate Mean Reservoir Temp: Estimated Reservoir Volume: Mean Capacity: Click "Edit With Form" above to add content History and Infrastructure Operating Power Plants: 0

62

The 4843 Alkali Metal Storage Facility Closure Plan  

SciTech Connect

The 4843 AMSF has been used primarily to provide a centralized building to receive and store dangerous and mixed alkali metal waste, including sodium and lithium, which has been generated at the Fast Flux Test Facility and at various other Hanford Site operations that used alkali metals. Most of the dangerous and mixed alkali metal waste received consists of retired equipment from liquid sodium processes. The unit continues to store material. In general, only solid alkali metal waste that is water reactive is stored at the 4843 AMSF. The 4843 AMSF will be closed in a manner consistent with Ecology guidelines and regulations (WAC 173-303-610). The general closure procedure is detailed as follows.

Not Available

1991-06-01T23:59:59.000Z

63

E-Print Network 3.0 - alkali vaporisation titandioxidadditiv...  

NLE Websites -- All DOE Office Websites (Extended Search)

PARTICULATES 4.2.2004 5-1 Chapter 5 Particulates Summary: hundred degrees lower than for coal in order to avoid loss of alkali by vaporisation. Typical values... , aluminum and...

64

CHARGE TRANSFER BETWEEN POSITIVE ALKALI IONS AND ATOMS  

E-Print Network (OSTI)

average velocity of atoms , ::. : . . :. . in the oven. Thisfor a potassium ", . atom beam operating under conditionsPOSITIVE ALKALI IONS AND ATOMS I W. R. Gentry, Yuan-tseh L e

Gentry, W.R.; Lee, Yuan-tseh; Mahan, Bruce H.

2008-01-01T23:59:59.000Z

65

High temperature alkali corrosion of ceramics in coal gas  

SciTech Connect

Calcia-stabilized cubic zirconia was mixed with soda, then fired at 840-1100 C. SiC was also reacted with alkali-containing atmosphere at 1000 C.

Pickrell, G.R.; Sun, T.; Brown, J.J.

1992-11-24T23:59:59.000Z

66

Metal-insulator transition in expanded alkali-metal fluids and alkali-metalrare-gas films  

Science Journals Connector (OSTI)

We have developed a theoretical model for expanded alkali metals and alkali-metalrare-gas films that is based on a physically realistic picture of the atomic-scale structure of these materials. It emphasizes the disorder in the systems, in particular the random atomic coordination number. Using this model we have calculated the density- and the energy-dependent conductivity as a function of the mean alkali-metal atomic coordination number. Although the theory contains only two parameters, both of which are fixed by the properties of pure materials at normal temperatures, we have been able to explain results measured over a temprature range from 4.2 to >2000 K in a variety of different alkali-metal systems. Conductivity and magnetic-susceptibility measurements, in particular, have been considered in some detail. In addition, the theory provides insight into the nature and location of the metal-insulator transition, the nature of the critical point for the alkali metals, and the thermal instability of the alkali-metalrare-gas films.

Judy R. Franz

1984-02-15T23:59:59.000Z

67

The reaction dynamics of alkali dimer molecules and electronically excited alkali atoms with simple molecules  

SciTech Connect

This dissertation presents the results from the crossed molecular beam studies on the dynamics of bimolecular collisions in the gas phase. The primary subjects include the interactions of alkali dimer molecules with simple molecules, and the inelastic scattering of electronically excited alkali atoms with O{sub 2}. The reaction of the sodium dimers with oxygen molecules is described in Chapter 2. Two reaction pathways were observed for this four-center molecule-molecule reaction, i.e. the formations of NaO{sub 2} + Na and NaO + NaO. NaO{sub 2} products exhibit a very anisotropic angular distribution, indicating a direct spectator stripping mechanism for this reaction channel. The NaO formation follows the bond breaking of O{sub 2}, which is likely a result of a charge transfer from Na{sub 2} to the excited state orbital of O{sub 2}{sup {minus}}. The scattering of sodium dimers from ammonium and methanol produced novel molecules, NaNH{sub 3} and Na(CH{sub 3}OH), respectively. These experimental observations, as well as the discussions on the reaction dynamics and the chemical bonding within these molecules, will be presented in Chapter 3. The lower limits for the bond dissociation energies of these molecules are also obtained. Finally, Chapter 4 describes the energy transfer between oxygen molecules and electronically excited sodium atoms.

Hou, H. [Univ. of California, Berkeley, CA (United States). Dept. of Chemistry]|[Lawrence Berkeley National Lab., CA (United States). Chemical Sciences Div.

1995-12-01T23:59:59.000Z

68

A new formulation of garnet-clinopyroxene thermometer using large number of experimental data with graphite capsules  

E-Print Network (OSTI)

A new formulation of garnet-clinopyroxene thermometer using large number of experimental data as run products are accumulated, and a new formulation of garnet-clinopyroxene thermometer is created and clinopyroxene is fixed to be ­ 120.72 (J/kbar.mol). The regressed and obtained thermometer formulation

Nakamura, Daisuke

69

Tuning of the Metal-Insulator Transition via Alkali Adsorption  

NLE Websites -- All DOE Office Websites (Extended Search)

Tuning of the Metal-Insulator Tuning of the Metal-Insulator Transition via Alkali Adsorption Tuning of the Metal-Insulator Transition via Alkali Adsorption Print Wednesday, 29 March 2006 00:00 Turning a material from an insulator to a metal, or vice versa, by light irradiation, exposure to electric or magnetic fields, or applying small changes in temperature, pressure, or doping-such intriguing control of a material's electronic properties is possible by exploiting strongly interacting or "correlated" electrons. Now a team of researchers from the University of Kiel in Germany and the ALS has found a novel, surprising way to continuously transform a layered metallic transition-metal compound, TaS2, into an insulator. Using angle-resolved photoemission spectroscopy (ARPES), they have demonstrated that adsorption of alkali atoms onto this material's surface gradually makes it more insulating, although in general, alkali adsorption should lead to more metallic behavior, as alkali atoms easily give away their loosely bound outermost electron.

70

C-CAMP, A closed cycle alkali metal power system  

SciTech Connect

A concept is presented for a Closed-Cycle Alkali Metal (C-CAMP) power systems which utilizes the heat of reaction of an alkali metal and halogen compound to vaporize an alkali metal turbine fluid for a Rankine cycle. Unique features of the concept are (1) direct contact (heat exchange) between the reaction products and turbine fluid, and (2) a flow-through chemical reactor/boiler. The principal feasibility issues of the concept relate to the degree of cross-mixing of product and turbine fluid streams within the reactor-boiler. If proven feasible, the concept may be adapted to a range of fuel and turbine fluids and ultimately lead to thermal efficiencies in excess of 35%.

Wichner, R.P.; Hoffman, H.W.

1988-01-01T23:59:59.000Z

71

Alkali-metal-halogen charge-exchange collisions  

Science Journals Connector (OSTI)

An approximate quasiclassical treatment is presented for calculating the cross sections for charge transfer from a neutral alkali-metal atom colliding with a halogen atom (chlorine or fluorine). The electron is treated by the time-dependent perturbation in the two-state approximation. The two states are the ground (or the first-excited) state of alkali-metal atom and the ground state of the halogen negative ion. Charge-transfer cross sections are calculated as a function of relative velocity (v) of collision between v=0.01and5 a.u. Qualitative features of these cross sections are compared with an earlier work on alkali-metal-oxygen collisions. An asymptotic formula at low velocities of collision v?0 is obtained, which compares with the earlier formula obtained by Bates. At higher velocities cross sections are found to vary as 1v2, as in the Born approximation.

D. Arora; J. E. Turner; P. G. Khubchandani

1976-12-01T23:59:59.000Z

72

Gabbs Alkali Flat Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

Gabbs Alkali Flat Geothermal Area Gabbs Alkali Flat Geothermal Area Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermal Resource Area: Gabbs Alkali Flat Geothermal Area Contents 1 Area Overview 2 History and Infrastructure 3 Regulatory and Environmental Issues 4 Exploration History 5 Well Field Description 6 Geology of the Area 7 Geofluid Geochemistry 8 NEPA-Related Analyses (0) 9 Exploration Activities (2) 10 References Area Overview Geothermal Area Profile Location: Nevada Exploration Region: Walker-Lane Transition Zone Geothermal Region GEA Development Phase: 2008 USGS Resource Estimate Mean Reservoir Temp: Estimated Reservoir Volume: Mean Capacity: Click "Edit With Form" above to add content History and Infrastructure Operating Power Plants: 0 No geothermal plants listed.

73

E-Print Network 3.0 - alkali metal intercalates Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

<< < 1 2 3 4 5 > >> 1 Work functions of pristine and alkali-metal intercalated carbon nanotubes and bundles Jijun Zhao,1, Summary: Work functions of pristine and alkali-metal...

74

E-Print Network 3.0 - alkalies Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

Summary: the results of a laboratory investigation for the use of high-volume clean-coal ash on mitigating alkali... alkali-silica reaction of the blends was determined...

75

E-Print Network 3.0 - alkali substitutes technical Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

on Fly Ash... the results of a laboratory investigation for the use of high-volume clean-coal ash on mitigating alkali... alkali-silica reaction of the blends was determined...

76

E-Print Network 3.0 - alkali Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

Summary: the results of a laboratory investigation for the use of high-volume clean-coal ash on mitigating alkali... alkali-silica reaction of the blends was determined...

77

E-Print Network 3.0 - alkalis tuhkan muuntuminen Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

Summary: the results of a laboratory investigation for the use of high-volume clean-coal ash on mitigating alkali... alkali-silica reaction of the blends was determined...

78

E-Print Network 3.0 - alkali pre-treatments producao Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

Summary: the results of a laboratory investigation for the use of high-volume clean-coal ash on mitigating alkali... alkali-silica reaction of the blends was determined...

79

E-Print Network 3.0 - alkali metal iodogallates Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

to the usual case of an alkali metal reservoir... to the vacuum pumps or due to adsorption of the alkali atoms onto ... Source: Jin, Deborah - JILA, University of Colorado at...

80

E-Print Network 3.0 - alkali metal astatides Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

to the usual case of an alkali metal reservoir... to the vacuum pumps or due to adsorption of the alkali atoms onto ... Source: Jin, Deborah - JILA, University of Colorado at...

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


81

E-Print Network 3.0 - alkali metals Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

to the usual case of an alkali metal reservoir... to the vacuum pumps or due to adsorption of the alkali atoms onto ... Source: Jin, Deborah - JILA, University of Colorado at...

82

E-Print Network 3.0 - alkali metal 2-aminonicotinates Sample...  

NLE Websites -- All DOE Office Websites (Extended Search)

to the usual case of an alkali metal reservoir... to the vacuum pumps or due to adsorption of the alkali atoms onto ... Source: Jin, Deborah - JILA, University of Colorado at...

83

E-Print Network 3.0 - alkali metal thermal-to-electric Sample...  

NLE Websites -- All DOE Office Websites (Extended Search)

to the usual case of an alkali metal reservoir... to the vacuum pumps or due to adsorption of the alkali atoms onto ... Source: Jin, Deborah - JILA, University of Colorado at...

84

E-Print Network 3.0 - alkali metal perrhenate Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

to the usual case of an alkali metal reservoir... to the vacuum pumps or due to adsorption of the alkali atoms onto ... Source: Jin, Deborah - JILA, University of Colorado at...

85

E-Print Network 3.0 - alkali metal diphenylamide Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

to the usual case of an alkali metal reservoir... to the vacuum pumps or due to adsorption of the alkali atoms onto ... Source: Jin, Deborah - JILA, University of Colorado at...

86

E-Print Network 3.0 - alkali metals analiz Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

to the usual case of an alkali metal reservoir... to the vacuum pumps or due to adsorption of the alkali atoms onto ... Source: Jin, Deborah - JILA, University of Colorado at...

87

E-Print Network 3.0 - alkali metal isotopes Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

to the usual case of an alkali metal reservoir... to the vacuum pumps or due to adsorption of the alkali atoms onto ... Source: Jin, Deborah - JILA, University of Colorado at...

88

E-Print Network 3.0 - alkali metals sintez Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

to the usual case of an alkali metal reservoir... to the vacuum pumps or due to adsorption of the alkali atoms onto ... Source: Jin, Deborah - JILA, University of Colorado at...

89

E-Print Network 3.0 - alkali metal alkaline Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

with alkali-metals 9, loi, alkaline earth metals l,18 and some of other rare-earth elements 19, 20 have... alkali metals were doped into C60 solids 9 and...

90

Magnetic polarizations of electrons at dislocations in alkali halides  

E-Print Network (OSTI)

interval. 25 NAGNETIC POLARIZATIONS OF ELECTRONS AT DISLOCATIONS IN ALKALI HALIDES 1. INTRODUCTION. The new magnetic effects observed in our laboratory on a number of single crystals of alkali halides are thought to be caused by electrons trapped... on d1slocations. The magnet1c properties are perhaps more interesting as a bas1c contribution to the sc1ence of magnetism than to a knowledge of d. islocations 1n these very pure, optically clear, s1ngle crystals of alkal1 halides. The gross magnet...

McClurg, Gene Roark

2012-06-07T23:59:59.000Z

91

Spin polarizations of photoelectrons emitted by alkali atoms  

E-Print Network (OSTI)

~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ o 55 LXS f OF %BURRS 1 Tso-photon ionization of an ~ atom. ~ . ~ ~ . . ~ ~, ~ 2 ihe photoelectron and the incident radiation. . . . . . ~ 3. ')he transitions fram the ground state substates of an alkali sterne...O and Qe2e ~ ~ ~ Ground state substate populations oi' the alkali atoms f' or &"/& -5o. I"p'- 0'4 ~ Ip? - 'fo ~ X" -0. 0~ 0. 2. . e. ee ~ e ~ e ~ ~ ~ . ~ e ~ e. eee ~ e ~ ~ ~ ~ ~ t Spin polaris. zations of the photoelectrons forX. /X. 50e (p? ~10 Vo t 7...

Stuart, Kenneth Charles

2012-06-07T23:59:59.000Z

92

Upgrading of petroleum oil feedstocks using alkali metals and hydrocarbons  

DOE Patents (OSTI)

A method of upgrading an oil feedstock by removing heteroatoms and/or one or more heavy metals from the oil feedstock composition. This method reacts the oil feedstock with an alkali metal and an upgradant hydrocarbon. The alkali metal reacts with a portion of the heteroatoms and/or one or more heavy metals to form an inorganic phase separable from the organic oil feedstock material. The upgradant hydrocarbon bonds to the oil feedstock material and increases the number of carbon atoms in the product. This increase in the number of carbon atoms of the product increases the energy value of the resulting oil feedstock.

Gordon, John Howard

2014-09-09T23:59:59.000Z

93

X-ray-edge problem in metals. II. Alkali-metal atoms adsorbed on alkali and other metal surfaces  

Science Journals Connector (OSTI)

Outer-core spectra are reported for Cs and Rb adsorbed on clean surfaces of the alkali metals and Mg. In most cases the spectrum at threshold resembles a broadened resonance line close to the energy of the atomic transition, with additional structure on the high-energy side. With increasing electron density of the substrate, the line broadens and disappears into a profile which increases approximately linearly from zero at a red-shifted threshold. In no case does the adsorbate spectrum resemble the sharp edge and overshoot observed for the bulk metal. Above about one monolayer in many cases, a discrete feature occurs on the red wing of the threshold line and grows systematically with coverage into the dominant spectrum of the pure bulk adsorbate at about 5 monolayers. The general behavior is qualitatively consistent with the behavior of alkali-alkali alloys, reported in the paper which immediately precedes this one.

Doon Gibbs; T.-H. Chiu; J. E. Cunningham; C. P. Flynn

1985-07-15T23:59:59.000Z

94

96 CEREAL CHEMISTRY Comparison Between Alkali and Conventional Corn Wet-Milling: 100-g Procedures  

E-Print Network (OSTI)

96 CEREAL CHEMISTRY Comparison Between Alkali and Conventional Corn Wet-Milling: 100-g Procedures S ABSTRACT Cereal Chem. 76(1):96-99 A corn wet-milling process in which alkali was used was studied as an alternative to the conventional corn wet-milling procedure. In the alkali wet-milling process, corn was soaked

95

Multiple spinelgarnet peridotite transitions in upper mantle: evidence from a harzburgite xenolith  

Science Journals Connector (OSTI)

... %; orthopyroxene 45-25%, mean 34%; garnet 1-7%, mean 5%; spinel 1% for all. Most olivine and orthopyroxene grains are less than 2 mm across ... with no obvious bending, and alteration along grain boundaries obscures some textural relationships. The spinel grains, red in colour and usually less than 0.5 mm, are very irregular ...

J. B. DAWSON; J. V. SMITH; J. S. DELANEY

1978-06-29T23:59:59.000Z

96

TRANSMISSION ELECTRON MICROSCOPY OF WEAKLY DEFORMED ALKALI HALIDE CRYSTALS  

E-Print Network (OSTI)

377 TRANSMISSION ELECTRON MICROSCOPY OF WEAKLY DEFORMED ALKALI HALIDE CRYSTALS H. STRUNK Max'importance croissante du durcissement de la solution solide. Abstract. 2014 Transmission electron microscopy (TEM Abstracts 7j66 - 7 I' 1. Introduction. - It is only some years ago that transmission electron microscopy

Boyer, Edmond

97

Core repulsion e ects in alkali trimers R. Gu erout  

E-Print Network (OSTI)

.e. molecules exhibiting a permanent electric dipole moment). Elementary chemical reactions at very low separation, involved when the potential energy surfaces of alkali trimers are calculated with a quantum-parity violation [10, 11, 12], and the time-independence of the electron- to-nuclear and nuclear-to-nuclear mass

Recanati, Catherine

98

Process for carbonaceous material conversion and recovery of alkali metal catalyst constituents held by ion exchange sites in conversion residue  

DOE Patents (OSTI)

In a coal gasification operation or similar conversion process carried out in the presence of an alkali metal-containing catalyst wherein solid particles containing alkali metal residues are produced, alkali metal constituents are recovered for the particles by contacting or washing them with an aqueous solution containing calcium or magnesium ions in an alkali metal recovery zone at a low temperature, preferably below about 249.degree. F. During the washing or leaching process, the calcium or magnesium ions displace alkali metal ions held by ion exchange sites in the particles thereby liberating the ions and producing an aqueous effluent containing alkali metal constituents. The aqueous effluent from the alkali metal recovery zone is then recycled to the conversion process where the alkali metal constituents serve as at least a portion of the alkali metal constituents which comprise the alkali metal-containing catalyst.

Sharp, David W. (Seabrook, TX)

1980-01-01T23:59:59.000Z

99

1.3.3.6 Magnetic neutron scattering and magnetic structure of terbium and holmium aluminum garnets  

Science Journals Connector (OSTI)

This document is part of Subvolume A Part A: Garnets and Perovskites of Volume 12 Magnetic and Other Properties of Oxides and Related Compounds of Landolt-Brnstein - Group III Condensed Matter.

W. Gunsser; U. Wolfmeier; J. Fleischhauer

1978-01-01T23:59:59.000Z

100

Garnet phase of MgSiO3 filling the pyroxeneilmenite gap at very high temperature  

Science Journals Connector (OSTI)

... mol%. The pattern of powder X-ray diffraction generally fits that of pyrope garnet (ASTM 15-742), although the peaks shift towards a low diffraction angle and some of ...

Takumi Kato; Mineo Kumazawa

1985-08-29T23:59:59.000Z

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


101

Metal-insulator transition in dilute alkali-metal systems  

Science Journals Connector (OSTI)

The metal-insulator transition is studied for dilute systems of alkali metals. Using a spin-split self-consistent band-structure approach, we find the transition density, a strikingly enhanced magnetic susceptibility, and the electron effective mass. The critical density nc is found to be given by the simple relation rsc=r0+2.8. Here rsc=[3(4?nc)]13 and r0 is the model potential radius which is roughly the radius of the neutral atom. The Mott criterion of nc13aB?0.25 (where aB is the appropriate Bohr orbit) is found to be inadequate for describing these systems. The predicted effective mass and magnetic susceptibility enhancements are largest for Li and become systematically smaller for the heavier alkalis. We compare our results for the transition density with two sets of experiments, namely the gas-liquid critical density and the metal-insulator transition for codeposited thick films of alkali-metal and rare-gas atoms. Good agreement is found in both cases.

J. H. Rose

1981-01-15T23:59:59.000Z

102

Thermodynamic property evaluation and magnetic refrigeration cycle analysis for gadolinium gallium garnet  

SciTech Connect

Based on relevant material property data and previous model formulations, a magnetothermodynamic property map for gadolinium gallium garnet (Gd{sub 3}Ga{sub 5}O{sub 12}) was adapted for refrigeration cycle analysis in the temperature range 4-40 K and the magnetic field range 0-6 T. Employing methods similar to those previously developed for other materials and temperature ranges, assessments of limitations and relative performance were made for Carnot, ideal regenerative, and pseudo-constant field regenerative cycles. It was found that although Carnot cycle limitations on available temperature lift for gadolinium gallium garnet are not as severe as the limitations for materials previously examined, considerable improvement in cooling capacity and temperature lift combinations can be achieved by using regenerative cycles if serious loss mechanisms are avoided.

Murphy, R.W.

1994-12-01T23:59:59.000Z

103

Oxygen-Consuming Chlor-Alkali Cell Configured To Minimize Peroxide  

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Oxygen-Consuming Chlor-Alkali Cell Oxygen-Consuming Chlor-Alkali Cell Oxygen-Consuming Chlor-Alkali Cell Configured To Minimize Peroxide Formation Oxygen-consuming zero gap chlor-alkali cell was configured to minimize peroxide formation. Available for thumbnail of Feynman Center (505) 665-9090 Email Oxygen-Consuming Chlor-Alkali Cell Configured To Minimize Peroxide Formation Oxygen-consuming zero gap chlor-alkali cell was configured to minimize peroxide formation. The cell included an ion-exchange membrane that divided the cell into an anode chamber including an anode and a cathode chamber including an oxygen gas diffusion cathode. The cathode included a single-piece of electrically conducting graphitized carbon cloth. Catalyst and polytetrafluoroethylene were attached to only one side of the cloth.

104

E-Print Network 3.0 - alkali feldspars ii Sample Search Results  

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leaching is spatially heterogeneous on some altered alkali Z .feldspar surfaces Gout et al., 1997 . Similar... weathering: II. Observation of feldspars from soils. Geochim....

105

E-Print Network 3.0 - alkali-metal vapor cells Sample Search...  

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dispenser source Timothy M. Roach and Dwayne Henclewood Summary: pressurized storage tank, or by laser ablation, or, most typically for rubidium and other alkali metals......

106

E-Print Network 3.0 - alkali metal rhenium Sample Search Results  

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square as a solution-phase sensing assembly (uorescent assembly) for alkali metal ions. 2... fragments as corners. Despite the fact that rhenium is a ... Source: Hupp, Joseph...

107

E-Print Network 3.0 - alkali modified sbn Sample Search Results  

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adsorbate is ionised on the surface and that the alkali core is not modified by the adsorption. We... Review Excited states in the alkalinoble ... Source: Bauer, Michael -...

108

E-Print Network 3.0 - alkali ion scattering Sample Search Results  

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3 Floppy modes and the Boson peak in crystalline and amorphous silicates: an inelastic neutron scattering study Summary: ion from Li+ to K+ in the alkali disilicate glasses,...

109

E-Print Network 3.0 - alkali alkaline earth Sample Search Results  

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Waterloo Collection: Chemistry 2 GEOL 305 Lecture 5 Felsic MaficIntermediate Summary: rare rhyolite Calc-alkaline and tholeiite basalts common, with less alkali basalt Mafic...

110

E-Print Network 3.0 - alkali carbonate reactions Sample Search...  

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de mathmatiques Collection: Mathematics 14 REFRACTORIES FOR HAZARDOUS WASTE INCINERATION AN OVERVIEW Summary: to be upgraded. How ever, alkali reactions may still occur....

111

Evaluation of concrete structures affected by alkali-silica reaction and delayed ettringite formation.  

E-Print Network (OSTI)

??Alkali-silica reaction (ASR) and delayed ettringite formation (DEF) are expansive reactions that can lead to the premature deterioration of concrete structures. Both have been implicated (more)

Giannini, Eric Richard

2012-01-01T23:59:59.000Z

112

Nondestructive evaluation of reinforced concrete structures affected by alkali-silica reaction and delayed ettringite formation.  

E-Print Network (OSTI)

??Alkali-silica reaction (ASR) and delayed ettringite formation (DEF) deterioration have been a problem for the concrete infrastructure in the state of Texas and around the (more)

Kreitman, Kerry Lynn

2011-01-01T23:59:59.000Z

113

Accelerated test methods for evaluating alkali-silica reactivity of recycled concrete aggregates.  

E-Print Network (OSTI)

??This thesis reports the findings of a study carried out to determine the effectiveness of Accelerated Tests in evaluating the Alkali-Silica Reactivity of Recycled Concrete (more)

Johnson, Robert C (Author)

2011-01-01T23:59:59.000Z

114

E-Print Network 3.0 - alkali sulfate aerosol Sample Search Results  

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Aerosol Formation during... " and "Mechanism of Alkali Sulfate Aerosols Formation during Biomass Combustion" describe the development... the ... Source: Ris National Laboratory...

115

E-Print Network 3.0 - alkali halides irradiated Sample Search...  

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U ET ASSOCIATIONS DE CENTRES COLORES ATOMIC HYDROGEN CENTRES IN IONIC CRYSTALS Summary: . Abstract. - Experimental and theoretical work on atomic hydrogen centres in alkali halides...

116

Cerium Substitution in Yttrium Iron Garnet: Valence State, Structure, and Energetics  

SciTech Connect

The garnet structure is a promising nuclear waste form because it can accommodate various actinide elements. Y3Fe5O12 (YIG) is a model composition for such substitutions. Since cerium (Ce) can be considered an analogue of actinide elements such as thorium (Th), plutonium (Pu), and uranium (U), studying the local structure and thermodynamic stability of Ce-substituted YIG (Ce:YIG) can provide insights into the structural and energetic aspects of large ion substitution in garnets. Single phases of yttrium iron garnet with Ce substitution up to 20 mol % (Y3-xCexFe5O12 with 0 ? x ? 0.2) were synthesized through a citrate-nitrate combustion method. The oxidation state of cerium was examined by X-ray absorption near edge structure spectroscopy (XANES); the oxidation state and site occupancy of Fe as a function of Ce loading also was monitored by 57Fe-Mssbauer spectroscopy. These measurements establish that Ce is predominantly in the trivalent state at low substitution levels, while a mixture of trivalent and tetravalent states are observed at higher concentrations. Fe was predominately trivalent and exists in multiple environments. High temperature oxide melt solution calorimetry was used to determine the enthalpy of formation of these Ce-substituted YIG garnets. The thermodynamic analysis demonstrated that, although there is an entropic driving force for the substitution of Ce for Y, the substitution reaction is enthalpically unfavorable. The experimental results are complemented by electronic structure calculations performed within the framework of density functional theory (DFT) with Hubbard-U corrections, which reproduce the observed increase in the tendency for tetravalent Ce to be present with higher loading of Ce. The DFT+U results suggest that the energetics underlying the formation of tetravalent Ce involves a competition between an unfavorable energy to oxidize Ce and reduce Fe, and a favorable contribution due to strain-energy reduction. The structural and thermodynamic findings suggest a strategy to design thermodynamically-favorable substitutions of actinides in the garnet system.

Guo, Xiaofeng; Tavakoli, Amir H.; Sutton, Steve; Kukkadapu, Ravi K.; Qi, Liang; Lanzirotti, Anthony; Newville, Mathew; Asta, Mark D.; Navrotsky, Alexandra

2014-01-28T23:59:59.000Z

117

1 INTRODUCTION Delayed Ettringite Formation (DEF) and Alkali-Aggregate Reaction (AAR) are both internal  

E-Print Network (OSTI)

1 INTRODUCTION Delayed Ettringite Formation (DEF) and Alkali-Aggregate Reaction (AAR) are both to produce potentially expansive ettringite in the set concrete. AAR may affect concretes cast with aggregate combined delayed ettringite formation and alkali aggregate reaction R.-P. Martin, J.-C. Renaud & F

Paris-Sud XI, Université de

118

Thermodynamic Properties Of Alkali Species In Coal Based Combined Cycle Power Systems  

SciTech Connect

The aim of this project is to support the development of a concept for a successful alkali removal. Two strategies are possible: optimizing the alkali retention potential of the coal ash slag in the combustion chamber and the liquid slag separators and separate alkali removal with solid sorbents (getters) at temperatures below 1450 C. Therefore in a first step the alkali partial pressure over coal ash slag should be determined in order to get information about the retention potential of the slag. The influence of additives on the retention potential of the slag should be investigated. The measurements should show if the alkali partial pressure over the slag is generally low enough in case of thermodynamic equilibrium. In case of too high alkali partial pressures a separate alkali removal is needed. Therefore in a second step commercial sorbent materials should be investigated concerning their sorption potential for alkalis. To get information about the influence of getter components on the sorption potential some mixtures of pure components, predicted by thermodynamic modeling to be most effective, should be investigated.

Willenborg, W.; Wolf, K.J.; Fricke, C.; Moeller, M.; Prikhodovsky, A.; Hilpert, K.; Singheiser, L.

2002-09-20T23:59:59.000Z

119

Alkali-metal-atom chemisorption onto a metal surface  

Science Journals Connector (OSTI)

Recent theoretical and experimental work implies that an alkali-metal atom chemisorbed onto a metal surface can be viewed within a dressed-atom picture, i.e., as an atom whose wave functions are perturbed due to its interaction with the surrounding host lattice. This picture is similar to that used for a noble-gas atom physisorbed onto a metal surface. Such an approach utilizes the calculational method of the coupledHartree-Fock theory, and it is applied in the present work to the chemisorption of a potassium atom onto a semi-infinite Na(001) substrate. Results for the Hartree-Fock ground state of the chemisorbed K atom, its induced dipole moment, and induced splitting of its p-orbital states are calculated at various substrate-adatom separations. It has been found that the induced dipole moment exhibits a maximum in its absolute value as the metal-adatom separation changes; most of the contribution to the dipole moment is due to the 3s- and 4s-electron states, while the pz states have been found to be counterpolarized, i.e., they polarize toward the vacuum side. On the other hand, the calculated dipole moments of the adatom were found to be too small to account for the observed work-function changes during alkali-metal chemisorption on a mteal surface.

A. N. Andriotis

1990-11-15T23:59:59.000Z

120

Unidirectional anisotropy in the spin pumping voltage in yttrium iron garnet/platinum bilayers  

SciTech Connect

Detailed measurements of the dc voltage generated in a thin Pt layer deposited on films of yttrium iron garnet (YIG) have been carried out to study the spin pumping effect produced by magnetostatic (MS) modes excited by a microwave field. In relatively thick YIG films the modes are far apart so that one can identify clearly the spin pumping voltage in V{sub SP} produced by each MS mode. We have discovered that when the sputter deposition of the thin Pt layer is made on the YIG film magnetized by a static magnetic field, V{sub SP} exhibits a strong unidirectional anisotropy.

Vilela-Leao, L. H.; Salvador, C.; Azevedo, A.; Rezende, S. M.

2011-09-05T23:59:59.000Z

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


121

Spin-wave excitation and propagation in microstructured waveguides of yttrium iron garnet/Pt bilayers  

SciTech Connect

We present an experimental study of spin-wave excitation and propagation in microstructured waveguides consisting of a 100?nm thick yttrium iron garnet/platinum (Pt) bilayer. The life time of the spin waves is found to be more than an order of magnitude higher than in comparably sized metallic structures, despite the fact that the Pt capping enhances the Gilbert damping. Utilizing microfocus Brillouin light scattering spectroscopy, we reveal the spin-wave mode structure for different excitation frequencies. An exponential spin-wave amplitude decay length of 31??m is observed which is a significant step towards low damping, insulator based micro-magnonics.

Pirro, P.; Chumak, A. V.; Lgel, B.; Leven, B.; Hillebrands, B. [Fachbereich Physik and Landesforschungszentrum OPTIMAS, Technische Universitt Kaiserslautern, D-67663 Kaiserslautern (Germany)] [Fachbereich Physik and Landesforschungszentrum OPTIMAS, Technische Universitt Kaiserslautern, D-67663 Kaiserslautern (Germany); Brcher, T. [Fachbereich Physik and Landesforschungszentrum OPTIMAS, Technische Universitt Kaiserslautern, D-67663 Kaiserslautern (Germany) [Fachbereich Physik and Landesforschungszentrum OPTIMAS, Technische Universitt Kaiserslautern, D-67663 Kaiserslautern (Germany); Graduate School Materials Science in Mainz, Gottlieb-Daimler-Strasse 47, D-67663 Kaiserslautern (Germany); Dubs, C.; Surzhenko, O.; Grnert, P. [Innovent e.V., Prssingstrae 27B, 07745 Jena (Germany)] [Innovent e.V., Prssingstrae 27B, 07745 Jena (Germany)

2014-01-06T23:59:59.000Z

122

Fabrication of alkali halide UV photocathodes by pulsed laser deposition  

SciTech Connect

A technique has been proposed for the fabrication of atmospheric corrosion resistant alkali halide UV photocathodes by pulsed laser deposition. We produced photocathodes with a highly homogeneous photoemissive layer well-adherent to the substrate. The photocathodes were mounted in a vacuum photodiode, and a tungsten grid was used as an anode. Using pulsed UV lasers, we carried out experiments aimed at evaluating the quantum efficiency of the photocathodes. With a dc voltage applied between the photocathode and anode grid, we measured a shunt signal proportional to the total charge emitted by the cathode exposed to UV laser light. The proposed deposition technique enables one to produce photocathodes with photoemissive layers highly uniform in quantum efficiency, which is its main advantage over thin film growth by resistive evaporation. (laser technologies)

Brendel', V M; Bukin, V V; Garnov, Sergei V; Bagdasarov, V Kh; Denisov, N N; Garanin, Sergey G; Terekhin, V A; Trutnev, Yurii A

2012-12-31T23:59:59.000Z

123

Comparison of the morphology of alkalisilica gel formed in limestones in concrete affected by the so-called alkalicarbonate reaction (ACR) and alkalisilica reaction (ASR)  

SciTech Connect

The morphology of alkalisilica gel formed in dolomitic limestone affected by the so-called alkalicarbonate reaction (ACR) is compared to that formed in a siliceous limestone affected by alkalisilica reaction (ASR). The particle of dolomitic limestone was extracted from the experimental sidewalk in Kingston, Ontario, Canada that was badly cracked due to ACR. The siliceous limestone particle was extracted from a core taken from a highway structure in Quebec, affected by ASR. Both cores exhibited marked reaction rims around limestone particles. The aggregate particles were polished and given a light gold coating in preparation for examination in a scanning electron microscope. The gel in the ACR aggregate formed stringers between the calcite crystals in the matrix of the rock, whereas gel in ASR concrete formed a thick layer on top of the calcite crystals, that are of the same size as in the ACR aggregate.

Grattan-Bellew, P.E., E-mail: p.grattan-bellew@sympatico.ca [Materials and Petrographic Research G-B Inc., 472 Edison Avenue, Ottawa, ON, Canada K2A 1T9 (Canada); Chan, Gordon [NRC Construction, Bldg., M20, 1200 Montreal Road, Ottawa, ON, Canada K1A 0R6 (Canada)] [NRC Construction, Bldg., M20, 1200 Montreal Road, Ottawa, ON, Canada K1A 0R6 (Canada)

2013-05-15T23:59:59.000Z

124

Characterization of Selective Binding of Alkali Cations with Carboxylate  

NLE Websites -- All DOE Office Websites (Extended Search)

Characterization of Selective Characterization of Selective Binding of Alkali Cations with Carboxylate Characterization of Selective Binding of Alkali Cations with Carboxylate Print Wednesday, 24 September 2008 00:00 During its lifetime, a cell spends a considerable fraction of its energy pumping sodium and calcium out and potassium in. This balancing process is similar to that found in the coils of the DNA double helix, where specific ions nestle and help stabilize this macromolecule. These are only two examples of selective ion interactions in biology; there are many others also vital to life. The existence of these interactions has been known since the early 20th century, when Franz Hofmeister observed that some salts (ionic compounds) aided the solution of proteins in egg, some caused proteins to destabilize and precipitate, and others ranged in activity between the two extremes. Hofmeister then ranked "salt-out" (destabilizing) ions versus "salt-in" (stabilizing) ions according to the magnitude of their effects (the "Hofmeister effects"). However, despite enormous effort, why certain interactions are preferred over others is not completely understood. Recently, a team of researchers from UC Berkeley used the model systems of acetate and formate (two simple carboxylic acids) with a series of cations to test predictions made in the literature for preferential interactions. Near-edge x-ray absorption fine structure (NEXAFS) spectroscopy was used as this technique is highly sensitive to the chemical environments around a molecule. Experiments at ALS Beamline 8.0.1 confirmed strengthening of the interaction between the cations and the carboxylate group in the following order: potassium, sodium, and lithium.

125

2-M Probe At Gabbs Alkali Flat Area (Kratt, Et Al., 2008) | Open Energy  

Open Energy Info (EERE)

2-M Probe At Gabbs Alkali Flat Area (Kratt, Et Al., 2008) 2-M Probe At Gabbs Alkali Flat Area (Kratt, Et Al., 2008) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: 2-M Probe At Gabbs Alkali Flat Area (Kratt, Et Al., 2008) Exploration Activity Details Location Gabbs Alkali Flat Area Exploration Technique 2-M Probe Activity Date Usefulness useful DOE-funding Unknown Notes More than 100 2-meter-deep temperature measurements were made during two separate surveys that took place in December 2007 and April 2008 (Figure 5). The area covered was 16 km in length parallel to the range front and a maximum of nearly 5 km out into the valley. The highest recorded temperature of 37°C was obtained approximately 100 m upslope from Rawhide hot springs. Near these springs, temperatures rapidly cool towards the

126

E-Print Network 3.0 - alkali clusters formed Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

In recent years there have been a number of studies of gas-phase alkali halide cluster ions... reports which found only ions of the ... Source: Lineberger, W. Carl - JILA &...

127

Review of alkali metal and refractory alloy compatibility for Rankine cycle applications  

Science Journals Connector (OSTI)

The principal corrosion mechanisms in refractory metal-alkali systems are dissolution, mass transfer, and impurity reactions. In general, niobium, tantalum, molybdenum, and tungsten have low solubilities in th...

James R. DiStefano

1989-12-01T23:59:59.000Z

128

Catalytic Activity of Alkali Metals on the Thermochemical Conversion of Biomass Materials  

Science Journals Connector (OSTI)

The first reaction in the thermal decomposition of cellulose is very sensitive to the existence of mineral impurities such as alkali metals and iron at concentrations as low as 0.5%. The catalytic reaction app...

Mahmood M. Barbooti

1986-01-01T23:59:59.000Z

129

Photoconductivity of CdS films, undoped and doped with alkali-metal impurity ions  

Science Journals Connector (OSTI)

The nonequilibrium electron processes that occur during photoconductivity increase and relaxation in pyrolytic CdS films, both nominally undoped and doped with alkali metals, are studied. The...S...-shaped or exh...

T. L. Mayorova; V. G. Klyuev; J. S. Bezdetko

2014-07-01T23:59:59.000Z

130

Study on Recycling Alkali from the Wastewater of Textile Mercerization Process by Nanofiltration  

Science Journals Connector (OSTI)

Abstract This study has researched the treatment ability of nanofiltration technology in printing and dyeing mercerization process alkali wastewater and investigated the effect of different pressures and alkalinities on membrane flux. The effect of different operating conditions on COD removal rate and alkali penetration rate has been also investigated in this study. The experimental results show that nanofiltration technology can remove the COD in printing and dyeing mercerization process wastewater effectively and the removal rate is above 80%. We conclude that the membrane flux tends to increase as the operating pressure increases, and decrease as the concentration of alkali in feed liquor and COD increases. The infiltration liquor through membrane can be satisfactorily reused by the method of concentration, and the final recovery efficiency of alkali by nanofiltration membrane treatment is above 90%.

Yun Zhang; Shuai Shao; Weicheng Yu; Fenglin Yang; Xiaochen Xu

2014-01-01T23:59:59.000Z

131

E-Print Network 3.0 - alkali-metal vapor density Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

Physics 65 nature physics | VOL 3 | APRIL 2007 | www.nature.comnaturephysics 227 REVIEW ARTICLE Summary: in a high-density alkali-metal vapor in low magnetic fields. Phys....

132

E-Print Network 3.0 - alkali mineral complex Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

complex Page: << < 1 2 3 4 5 > >> 1 Technical Report Documentation Page 1. Report No. Summary: the potential of HVFA concrete in mitigating the effects of alkali-silica...

133

Effects from Alkali-Silica Reacton and Delayed Ettringite Formation on Reinforced Concrete Column Lap Splices  

E-Print Network (OSTI)

Reinforced concrete bridge columns can deteriorate prematurely due to the alkali-silica reaction (ASR) and/or delayed ettringite formation (DEF), causing internal expansion and cracking on the surface of the concrete. The performance...

Eck, Mary

2012-07-16T23:59:59.000Z

134

E-Print Network 3.0 - alkali ion beams Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

beams Search Powered by Explorit Topic List Advanced Search Sample search results for: alkali ion beams Page: << < 1 2 3 4 5 > >> 1 METHOD FOR EFFICIENCY AND TIME RESPONSE...

135

Effects from Alkali-Silica Reacton and Delayed Ettringite Formation on Reinforced Concrete Column Lap Splices.  

E-Print Network (OSTI)

??Reinforced concrete bridge columns can deteriorate prematurely due to the alkali-silica reaction (ASR) and/or delayed ettringite formation (DEF), causing internal expansion and cracking on the (more)

Eck, Mary

2012-01-01T23:59:59.000Z

136

Marine residual fuel sorption and desorption kinetics by alkali treated rice husks  

Science Journals Connector (OSTI)

An oil absorbent material has been produced from waste biomass with an alkali treatment process. The simple yet effective process is carried out on the agricultural biowaste at 90C and ambient pressure. The pre...

Alireza Bazargan; Chi Wai Hui; Gordon Mckay

2014-06-01T23:59:59.000Z

137

Laboratory Measurements of Alkali Metal Containing Vapors Released during Biomass Combustion  

Science Journals Connector (OSTI)

Alkali metals, in particular potassium. have been implicated as key ingredients for enhancing fouling and slagging of heat transfer surfaces in power generating facilities that convert biomass to electricity. Whe...

David C. Dayton; Thomas A. Milne

1996-01-01T23:59:59.000Z

138

E-Print Network 3.0 - alkali-silicate glass exposed Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

silicate glass exposed Search Powered by Explorit Topic List Advanced Search Sample search results for: alkali-silicate glass exposed Page: << < 1 2 3 4 5 > >> 1 An 17O NMR...

139

In situ formation of coal gasification catalysts from low cost alkali metal salts  

DOE Patents (OSTI)

A carbonaceous material, such as crushed coal, is admixed or impregnated with an inexpensive alkali metal compound, such as sodium chloride, and then pretreated with a stream containing steam at a temperature of 350.degree. to 650.degree. C. to enhance the catalytic activity of the mixture in a subsequent gasification of the mixture. The treatment may result in the transformation of the alkali metal compound into another, more catalytically active, form.

Wood, Bernard J. (Santa Clara, CA); Brittain, Robert D. (Cupertino, CA); Sancier, Kenneth M. (Menlo Park, CA)

1985-01-01T23:59:59.000Z

140

Detection of alkali-silica reaction swelling in concrete by staining  

DOE Patents (OSTI)

A method using concentrated aqueous solutions of sodium cobalt nitrite and rhodamine B is described which can be used to identify concrete that contains gels formed by the alkali-silica reaction (ASR). These solutions present little health or environmental risk, are readily applied, and rapidly discriminate between two chemically distinct gels; K-rich, Na-K-Ca-Si gels are identified by yellow staining, and alkali-poor, Ca-Si gels are identified by pink staining.

Guthrie, G.D. Jr.; Carey, J.W.

1998-04-14T23:59:59.000Z

Note: This page contains sample records for the topic "larson garnet alkali" 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

Detection of alkali-silica reaction swelling in concrete by staining  

DOE Patents (OSTI)

A method using concentrated aqueous solutions of sodium cobaltinitrite and rhodamine B is described which can be used to identify concrete that contains gels formed by the alkali-silica reaction (ASR). These solutions present little health or environmental risk, are readily applied, and rapidly discriminate between two chemically distinct gels; K-rich, Na--K--Ca--Si gels are identified by yellow staining, and alkali-poor, Ca--Si gels are identified by pink staining.

Guthrie, Jr., George D. (Santa Fe, NM); Carey, J. William (Santa Fe, NM)

1998-01-01T23:59:59.000Z

142

On the Chemla effect in molten alkali nitrates  

Science Journals Connector (OSTI)

The Chemla effect concerns the strong composition dependence of the internal ionic mobilities of cations in mixtures of two molten salts with a common anion in which the mobility of the large cation can be higher than the small one at low concentrations of the latter. Molecular dynamics simulations of molten ( Li Cs)NO 3 ( Li K)NO 3 ( Li Na)NO 3 ( Na Cs)NO 3 each at two different compositions at a given temperature and also pure LiNO 3 and pure KNO 3 have been performed with the aim of reproducing the Chemla effect. The key role played by anion polarization on the Chemla effect in molten alkali nitrates is demonstrated by comparing the calculated mobilities using nonpolarizable and polarizable models. Polarization effects were included in the simulations by using a previously proposed fluctuating charge model (FCM) for the NO 3 ? anion. It is shown that a single potential model for a ( M 1 M 2 ) NO 3 mixture gives the correct composition dependence of the M 1 and the M 2 mobilities provided that polarization effects are included in the model. The FCM is thus transferable between different systems but not its nonpolarizable counterpart. Structure and dynamics of the simulated systems are discussed in light of proposed models for the Chemla effect.

Mauro C. C. Ribeiro

2002-01-01T23:59:59.000Z

143

Ethanol fermentation of cassava starch pretreated with alkali  

SciTech Connect

In view of the current industrial process for the conventional ethanol fermentation, in which raw starch materials are heated at 120 degrees C for 2 h, conditions for an alternative process were set: an overall time from saccharification to ethanol fermentation of within 3-4 days, an operation temperature of below 60 degrees C, an ethanol yield of over 93%, and a ratio of raw material to fermentation volume of within 1:4. To meet these conditions, previously a steeping method of starch materials in 0.5N HCl solution at 60 degrees C for 12 h were used, followed by combined actions of ..cap alpha..-amylase and glucoamylase. The ethanol yield from uncooked cassava starch treated under the conditions described was 95% after fermentation for 3 days with Saccharomyces cerevisiae. However, the use of a relatively higher concentration of acid for steeping is still a problem and gelatinization of starch materials is insufficient. This communication, therefore, describes effects of alkali steeping and structural change of starch granules on the ethanol fermentation. 8 references.

Shin, Y.C.; Lee, S.Y.; Choe, Y.K.; Kim, H.S.; Byun, S.M.

1986-04-01T23:59:59.000Z

144

Alkali monolayers on transition metal surfaces: electronic promotion in catalysis  

SciTech Connect

Potassium monolayers on the platinum (111) crystal surface were studied most extensively. Ultraviolet photoelectron spectroscopy showed a large decrease in the work function of the surface when potassium was adsorbed. The heat of desorption of potassium decreased with increasing coverage. Low energy electron diffraction (LEED) showed that potassium forms hexagonal (close packed) overlayer structures. The effects of potassium on the chemisorption of various small molecules on Pt(111) were studied. Oxygen and nitric oxide were readily adsorbed and dissociated by potassium, forming stable potassium-oxide complexes on the surface. Adsorption heat of carbon monoxide on Pt(111) increased with potassium coadsorption. High resolution electron energy loss spectroscopy showed that the carbon-oxygen bond of adsorbed carbon monoxide was weakened by potassium. Adsorption heat of benzene, however, was decreased by coadsorbed potassium. A molecular orbital explanation was given to explain the effects of potassium. CO hydrogenation reactions performed on metal foils showed that the addition of alkali adlayers tends to decrease the overall rate of reaction. Changes in selectivity were noted, shifting the product distribution in favor of higher molecular weight species and from alkanes to alkenes.

Garfunkel, E.

1983-08-01T23:59:59.000Z

145

High temperature alkali corrosion of ceramics in coal gas. Quarterly progress report No. 3, March 1, 1992--May 31, 1992  

SciTech Connect

High temperature alkali corrosion has been known to cause premature failure of ceramic components used in advanced high temperature coal combustion systems such as coal gasification and clean-up, coal fired gas turbines, and high efficiency heat engines. The objective of this research is to systematically evaluate the alkali corrosion resistance of the most commonly used structural ceramics including silicon carbide, silicon nitride, cordierite, mullite, alumina, aluminum titanate, zirconia, and fireclay glass. The study consists of identification of the alkali reaction products (phase equilibria) and the kinetics of the alkali reactions as a function of temperature and time.

Pickrell, G.R.; Sun, T.; Brown, J.J.

1992-05-27T23:59:59.000Z

146

Theory of the alkali-metal chemisorption on metal surfaces  

Science Journals Connector (OSTI)

The electronic structure of the alkali-metal adatom on metal surfaces is studied by a first-principles method as a function of adatom coverage (?). We employ jellium as a high-density metal substrate to make a continuous change of ? possible. Although the characteristic variation of the work function with ? is reproduced well by the present calculation, its mechanism is different from a widely accepted mechanism in which the adatom electronic structure is assumed to change from ionic to neutral with increasing ? by the depolarization shift. The charge redistribution ??(r,?) that lowers the work function deviates far from the point-charge-transfer model, and the electrostatic potential change at adatom sites due to ??(r,?) depends very little on ?. Accordingly, the adatom valence density of states shows no downward shift with increasing ?. The adatom region is essentially neutral, even at low ?. The bonding-antibonding boundary in the bond-order density of the adatom-substrate bond coincides well with the Fermi level at low ?, indicating a formation of a metallic bond by the maximum use of bonding states even at low ?. The close similarity between the calculated bond-order and dipole densities as a function of the one-electron energy implies that the adatom polarization due to the hybridization of adatom and substrate orbitals plays an important role for the adatom dipole and its ? dependence even at low ?. The decrease of the adatom dipole is explained by a weakening of the adatom-substrate bonding as well as a significant decrease in the dipole matrix elements with increasing ?.

H. Ishida

1988-10-15T23:59:59.000Z

147

Molybdenum/alkali metal/ethylene glycol complexes useful as epoxidation catalysts  

SciTech Connect

This patent describes a clear, storage stable solution of a molybdenum/alkali metal/ethylene glycol complex in ethylene glycol made by the process comprising: reacting at an elevated temperature between about 25/sup 0/ and 150/sup 0/C a solid ammonium molybdate or a hydrate thereof and a solid alkali metal molybdate or a hydrate thereof with ethylene glycol, such that the ratio of moles of ethylene glycol to total gram atoms of molybdenum in the molybdates ranges from about 7:10 to 10:1, and the ratio of gram atoms of molybdenum in the ammonium molybdate or hydrate thereof to gram atoms of molybdenum in the alkali metal molybdate is from about 1:1 to about 20:1 to thereby provide a reaction product composed of a solution of an alkali metal-containing complex of molybdenum, alkali metal and ethylene glycol and by-products, including water, in the ethylene glycol and subsequently stripping the solution at a reduced pressure to remove from about 5 to about 25% of the reaction product, as distillate, to thereby provide a storage stable solution of the complex in the ethylene glycol having a molybdenum content of about 6 wt. % to about 20 wt. %, a water concentration of about 0.1 wt. % to about 6 wt. % and an acid number of more than about 60.

Marquis, E.T.; Sanderson, J.R.; Keating, K.P.

1987-10-27T23:59:59.000Z

148

The direct observation of alkali vapor species in biomass combustion and gasification  

SciTech Connect

This report summarizes new data from screening various feedstocks for alkali vapor release under combustion conditions. The successful development of a laboratory flow reactor and molecular beam, mass spectrometer interface is detailed. Its application to several herbaceous and woody feedstocks, as well as a fast-pyrolysis oil, under 800 and 1,100{degrees}C batch combustion, is documented. Chlorine seems to play a large role in the facile mobilization of potassium. Included in the report is a discussion of relevant literature on the alkali problem in combustors and turbines. Highlighted are the phenomena identified in studies on coal and methods that have been applied to alkali speciation. The nature of binding of alkali in coal versus biomass is discussed, together with the implications for the ease of release. Herbaceous species and many agricultural residues appear to pose significant problems in release of alkali species to the vapor at typical combustor temperatures. These problems could be especially acute in direct combustion fired turbines, but may be ameliorated in integrated gasification combined cycles.

French, R.J.; Dayton, D.C.; Milne, T.A.

1994-01-01T23:59:59.000Z

149

Alkali-silica reaction products: Comparison between samples from concrete structures and laboratory test specimens  

SciTech Connect

Alkali-silica gels (ASG) were investigated in concrete from bridge structures (constructed from the 1920s to 2000), as well as in experimental specimens; employing optical microscopy, petrographic image analysis, and scanning electron microscopy combined with energy dispersive spectroscopy (SEM/EDS). The main differences were found in the chemical composition and morphology of the ASGs. ASGs which had formed in older concrete samples (50-80 years old) show a partly crystalline structure and higher Ca{sup 2+} content, indicating their aging and maturation. Younger concrete samples and experimental test specimens exhibit the presence of amorphous ASG. The chemistry of ASG from experimental specimens reflects the chemical composition of accelerating solutions. - Research Highlights: {yields} Quantitative analysis of alkali-silica gels {yields} Comparison of ASR in experimental conditions with ASR in bridge structures {yields} Investigation of factors affecting alkali-silica reaction {yields} Investigation of ASR of different types of aggregates.

Sachlova, Sarka, E-mail: lukschova@seznam.cz; Prikryl, Richard; Pertold, Zdenek

2010-12-15T23:59:59.000Z

150

Synergistic capture mechanisms for alkali and sulfur species from combustion. Final report  

SciTech Connect

Experimental work was carried out on a 17 kW, 600 cm long, gas laboratory combustor, to investigate the post flame reactive capture of alkali species by kaolinite. Emphasis was on alkali/sorbent interactions occurring in flue gas at temperatures above the alkali dewpoint and on the formation of water insoluble reaction products. Time-temperature studies were carried out by injecting kaolinite at different axial points along the combustor. The effect of chlorine and sulfur on alkali capture was investigated by doping the flame with SO{sub 2} and Cl{sub 2} gases to simulate coal flame environments. Particle time and temperature history was kept as close as possible to that which would ordinarily be found in a practical boiler. Experiments designed to extract apparent initial reaction rates were carried using a narrow range, 1-2 {mu}m modal size sorbent, while, a coarse, multi size sorbent was used to investigate the governing transport mechanisms. The capture reaction has been proposed to be between alkali hydroxide and activated kaolinite, and remains so in the presence of sulfur and chlorine. The presence of sulfur reduces sodium capture by under 10% at 1300{degree}C. Larger reductions at lower temperatures are attributed to the elevated dewpoint of sodium ({approximately}850{degree}C) with subsequent reduction in sorbent residence time in the alkali gas phase domain. Chlorine reduces sodium capture by 30% across the temperature range covered by the present experiments. This result has been linked to thermodynamic equilibria between sodium hydroxide, sodium chloride and water.

Peterson, T.W.; Shadman, F.; Wendt, J.O.L.; Mwabe, P.O.

1994-02-01T23:59:59.000Z

151

Structure of the Alkali-metal-atom-Strontium molecular ions: towards photoassociation and formation of cold molecular ions  

E-Print Network (OSTI)

Structure of the Alkali-metal-atom-Strontium molecular ions: towards photoassociation and formation polarizability, of molecular ions composed of one alkali-metal atom and a Strontium ion are determined and a Strontium ion are discussed, as well as the formation of stable molecular ions. PACS numbers: 31.15.AR,31

152

The ground state of the polar alkali-Strontium molecules: potential energy curve and permanent dipole moment  

E-Print Network (OSTI)

The ground state of the polar alkali-Strontium molecules: potential energy curve and permanent In this study, we investigate the structure of the polar alkali-Strontium diatomic molecules as possible already been reported, while quantum degeneracy in Ytterbium [22, 23], Calcium [24], and Strontium [25, 26

Paris-Sud XI, Université de

153

Exciplex pumped alkali laser (XPAL) modeling and theory Andrew D. Palla, Joseph T. Verdeyen, and David L. Carroll  

E-Print Network (OSTI)

Exciplex pumped alkali laser (XPAL) modeling and theory Andrew D. Palla, Joseph T. Verdeyen pumped alkali laser (XPAL) system has been demonstrated in mixtures of Cs vapor, Ar, with and without ethane, by pumping Cs-Ar atomic collision pairs and subsequent dissociation of diatomic, electronically

Carroll, David L.

154

Ward Co. Dunn Co. McLean Co. McHenry Co. Mountrail Co. McKenzie Co.  

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

WHISKEY JOE WHISKEY JOE WHITE ASH SPRING COULEE DES LACS MAGPIE HARTLAND BEICEGEL CREEK RANCH COULEE WINNER CRAZY MAN CREEK GROS VENTRE BANK W BULLSNAKE UPLAND COULEE REFUGE LARSON GARNET ALKALI CREEK PLUMER RATTLESNAKE POINT ELLSWORTH CHURCH BORDER HANSON GROVER HULSE COULEE SAKAKAWEA AURELIA ROUND TOP BUTTE GORHAM BUTTE W MARMON MANITOU SHEALEY CLAYTON SERGIS N SADDLE BUTTE HAYLAND CEDAR COULEE BOWLINE LITTLE BUTTE LONG CREEK RHOADES HEDBERG FILLMORE EIDSVOLD FAIRFIELD WOLF BAY TOBACCO GARDEN N SPRING VALLEY ARNEGARD STAFFORD RICHBURG PRESCOTT BULL MOOSE S PASSPORT PHELPS BAY STAMPEDE BIG GULCH BLACKTAIL WESTHOPE WESTBERG DRY CREEK BEARS TAIL MINNESOTA ANTELOPE CREEK BLUE RIDGE NEWBURG E GRASSLAND NORTHGATE PLEASANT S SANDROCKS EAGLE NEST BEAR BUTTE DOLLAR JOE BIG MEADOW BARTA CHARLIE BOB HEART BUTTE RPD_MCKENZIECO_2 VALLEY ROAD GREAT NORTHERN

155

Absorption profiles of alkali-metal D lines in the presence of a static magnetic field  

Science Journals Connector (OSTI)

When atoms are placed in a static magnetic field, they undergo shifts of their energy levels and changes in their transition probabilities. These two effects must be taken into account when considering absorption profiles of alkali-metal D lines, which result from the contribution of many transitions influenced by the laser spectrum and Doppler broadening. The model presented here gives the D-line absorption coefficients of alkali-metal vapors in the presence of an arbitrary static magneitc field. They are evaluated considering various laser polarizations. Experimental measurements of D-line absorption profiles for Rb85, Rb87, and Cs133 isotopes show excellent agreement with theoretical predictions.

P. Tremblay; A. Michaud; M. Levesque; S. Thriault; M. Breton; J. Beaubien; N. Cyr

1990-09-01T23:59:59.000Z

156

Effect of alkali metals on the interaction of O/sub 2/ and CO with some transition-metal surfaces  

SciTech Connect

The interactions of O/sub 2/ and CO with alkali covered Ni, Ru, and Pt are reviewed with emphasis on the author's own studies. It is shown that the presence of alkalis changes the coadsorbates adsorption rates, heats of adsorption, and dissociative propensity, the strength of the effect depending on the alkali nature and coverage. The differences for the three substrates are interpreted comparing the properties of the clean surface. A detailed analysis of the coadsorbate--modifier interactions suggests that they depend on the adsorption state of the alkali species and the coadsorbate--substrate bond strength. Evidence of the formation of patches of ''surface complexes'' coexisting with the unperturbed surface is given and discussed in terms of strong direct alkali--coadsorbate interactions.

Kiskinova, M.

1987-07-01T23:59:59.000Z

157

Method for inhibiting alkali metal corrosion of nickel-containing alloys  

DOE Patents (OSTI)

Structural components of nickel-containing alloys within molten alkali metal systems are protected against corrosion during the course of service by dissolving therein sufficient aluminum, silicon, or manganese to cause the formation and maintenance of a corrosion-resistant intermetallic reaction layer created by the interaction of the molten metal, selected metal, and alloy.

DeVan, Jackson H. (Oak Ridge, TN); Selle, James E. (Westminster, CO)

1983-01-01T23:59:59.000Z

158

The alkali soils of the middle Niger Valley Origins, formation and present evolution  

E-Print Network (OSTI)

1 The alkali soils of the middle Niger Valley Origins, formation and present evolution Laurent area of the middle Niger valley (Niger Republic), irrigation techniques had been developed to respond, 1994). The contact between the two soil types is always so abrupt that in the all West-Africa surveys

Paris-Sud XI, Université de

159

Secondary cell with orthorhombic alkali metal/manganese oxide phase active cathode material  

DOE Patents (OSTI)

An alkali metal manganese oxide secondary cell is disclosed which can provide a high rate of discharge, good cycling capabilities, good stability of the cathode material, high specific energy (energy per unit of weight) and high energy density (energy per unit volume). The active material in the anode is an alkali metal and the active material in the cathode comprises an orthorhombic alkali metal manganese oxide which undergoes intercalation and deintercalation without a change in phase, resulting in a substantially linear change in voltage with change in the state of charge of the cell. The active material in the cathode is an orthorhombic structure having the formula M.sub.x Z.sub.y Mn.sub.(1-y) O.sub.2, where M is an alkali metal; Z is a metal capable of substituting for manganese in the orthorhombic structure such as iron, cobalt or titanium; x ranges from about 0.2 in the fully charged state to about 0.75 in the fully discharged state, and y ranges from 0 to 60 atomic %. Preferably, the cell is constructed with a solid electrolyte, but a liquid or gelatinous electrolyte may also be used in the cell.

Doeff, Marca M. (Hayward, CA); Peng, Marcus Y. (Cupertino, CA); Ma, Yanping (Albany, CA); Visco, Steven J. (Berkeley, CA); DeJonghe, Lutgard C. (Lafayette, CA)

1996-01-01T23:59:59.000Z

160

Gas phase spectroscopy of alkali carbides: The pure rotational spectrum of KC ,,X 4  

E-Print Network (OSTI)

observation of potassium carbide, and of any alkali metal carbide species. The molecule was produced under d, and possible ways to better activate C­C and C­H bonds.1 Investigating metal carbide species also can lead- faces. Finally, it has recently been suggested that adding metal carbides to H2 may provide high energy

Ziurys, Lucy M.

Note: This page contains sample records for the topic "larson garnet alkali" 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

Transport of Alkali Halides through a Liquid Organic Membrane Containing a Ditopic Salt-Binding Receptor  

E-Print Network (OSTI)

in the solid state as contact ion pairs. Transport experiments, using a supported liquid membrane and high saltTransport of Alkali Halides through a Liquid Organic Membrane Containing a Ditopic Salt and anion receptors. All transport systems exhibit the same qualitative order of ion selectivity; that is

Smith, Bradley D.

162

Oxygen production by molten alkali metal salts using multiple absorption-desorption cycles  

DOE Patents (OSTI)

A continuous chemical air separation is performed wherein oxygen is recovered with a molten alkali metal salt oxygen acceptor in a series of absorption zones which are connected to a plurality of desorption zones operated in separate parallel cycles with the absorption zones. A greater recovery of high pressure oxygen is achieved at reduced power requirements and capital costs.

Cassano, Anthony A. (Allentown, PA)

1985-01-01T23:59:59.000Z

163

Secondary cell with orthorhombic alkali metal/manganese oxide phase active cathode material  

DOE Patents (OSTI)

An alkali metal manganese oxide secondary cell is disclosed which can provide a high rate of discharge, good cycling capabilities, good stability of the cathode material, high specific energy (energy per unit of weight) and high energy density (energy per unit volume). The active material in the anode is an alkali metal and the active material in the cathode comprises an orthorhombic alkali metal manganese oxide which undergoes intercalation and deintercalation without a change in phase, resulting in a substantially linear change in voltage with change in the state of charge of the cell. The active material in the cathode is an orthorhombic structure having the formula M{sub x}Z{sub y}Mn{sub (1{minus}y)}O{sub 2}, where M is an alkali metal; Z is a metal capable of substituting for manganese in the orthorhombic structure such as iron, cobalt or titanium; x ranges from about 0.2 in the fully charged state to about 0.75 in the fully discharged state, and y ranges from 0 to 60 atomic %. Preferably, the cell is constructed with a solid electrolyte, but a liquid or gelatinous electrolyte may also be used in the cell. 11 figs.

Doeff, M.M.; Peng, M.Y.; Ma, Y.; Visco, S.J.; DeJonghe, L.C.

1996-09-24T23:59:59.000Z

164

Microbial reverse-electrodialysis chemical-production cell for acid and alkali production  

E-Print Network (OSTI)

Microbial reverse-electrodialysis chemical-production cell for acid and alkali production Xiuping Accepted 7 March 2013 Available online 15 March 2013 Keywords: Microbial fuel cell Reverse electrodialysis Bioenergy A new type of bioelectrochemical system, called a microbial reverse-electrodialysis chemical

165

The role of alumina on performance of alkali-activated slag paste exposed to 50 C  

SciTech Connect

The strength and microstructural evolution of two alkali-activated slags, with distinct alumina content, exposed to 50 C have been investigated. These two slags are ground-granulated blast furnace slag (containing 13% (wt.) alumina) and phosphorous slag (containing 3% (wt.) alumina). They were hydrated in the presence of a combination of sodium hydroxide and sodium silicate solution at different ratios. The microstructure of the resultant slag pastes was assessed by X-ray diffraction, differential thermogravimetric analysis, and scanning electron microscopy. The results obtained from these techniques reveal the presence of hexagonal hydrates: CAH{sub 10} and C{sub 4}AH{sub 13} in all alkali-activated ground-granulated blast-furnace slag pastes (AAGBS). These hydrates are not observed in pastes formed by alkali-activated ground phosphorous slag (AAGPS). Upon exposure to 50 C, the aforementioned hydration products of AAGBS pastes convert to C{sub 3}AH{sub 6}, leading to a rapid deterioration in the strength of the paste. In contrast, no strength loss was detected in AAGPS pastes following exposure to 50 C. -- Highlights: Strength of alkali-activated slag (AAS) pastes after exposure to 50 C is studied. AAS pastes with high alumina content lose strength after the exposure. C{sub 4}AH{sub 13} and CAH{sub 10} form in these AAS pastes. Conversion of these calcium alumina hydrates is associated with the strength loss. AAS pastes with low alumina content maintain its strength after the exposure.

Jambunathan, N. [Department of Civil Engineering, Monash University, Clayton, Victoria 3800 (Australia)] [Department of Civil Engineering, Monash University, Clayton, Victoria 3800 (Australia); Sanjayan, J.G. [Faculty of Engineering and Industrial Sciences, Swinburne University of Technology, Hawthorn, Victoria (Australia)] [Faculty of Engineering and Industrial Sciences, Swinburne University of Technology, Hawthorn, Victoria (Australia); Pan, Z., E-mail: zhu.pan@monash.edu [Department of Civil Engineering, Monash University, Clayton, Victoria 3800 (Australia); Li, G. [School of Mechanical and Chemical Engineering, The University of Western Australia, Crawley, WA 6009 (Australia)] [School of Mechanical and Chemical Engineering, The University of Western Australia, Crawley, WA 6009 (Australia); Liu, Y. [School of Geosciences and Info-Physics, Central South University, Changsha 410083 (China)] [School of Geosciences and Info-Physics, Central South University, Changsha 410083 (China); Korayem, A.H.; Duan, W.H.; Collins, F. [Department of Civil Engineering, Monash University, Clayton, Victoria 3800 (Australia)] [Department of Civil Engineering, Monash University, Clayton, Victoria 3800 (Australia)

2013-12-15T23:59:59.000Z

166

Alignment of molecules in gaseous transport: Alkali dimers in supersonic nozzle beams  

E-Print Network (OSTI)

Alignment of molecules in gaseous transport: Alkali dimers in supersonic nozzle beams M. P. SinhaO) + a.P lcosO), where 0 is the angle between the angular momentum vector J of the molecule and the beam direction. This method is applied to determine the alignment of Na2 molecules in a supersonic nozzle beam

Zare, Richard N.

167

He polarization-dependent EPR frequency shifts of alkali-metal3 Earl Babcock,1  

E-Print Network (OSTI)

3 He polarization-dependent EPR frequency shifts of alkali-metal­3 He pairs Earl Babcock,1 Ian A-dependent measurements of the EPR frequency shifts for Na, K, and Rb interacting with polarized 3 He. K and Na frequency also allowed us to extend the measured temperature dependence of the Rb EPR frequency shifts up to 350

Walker, Thad G.

168

Oxygen production by molten alkali metal salts using multiple absorption-desorption cycles  

DOE Patents (OSTI)

A continuous chemical air separation is performed wherein oxygen is recovered with a molten alkali metal salt oxygen acceptor in a series of absorption zones which are connected to a plurality of desorption zones operated in separate parallel cycles with the absorption zones. A greater recovery of high pressure oxygen is achieved at reduced power requirements and capital costs. 3 figs.

Cassano, A.A.

1985-07-02T23:59:59.000Z

169

Production of Benzene Polycarboxylic Acids from Lignite by Alkali-Oxygen Oxidation  

Science Journals Connector (OSTI)

Production of Benzene Polycarboxylic Acids from Lignite by Alkali-Oxygen Oxidation ... The oxidation of coal to produce high-valued benzene polycarboxylic acids (BPCAs), which are obtained currently from diminishing petroleum reserves, is a promising industrial process of the future. ...

Wenhua Wang; Yucui Hou; Weize Wu; Muge Niu; Weina Liu

2012-10-22T23:59:59.000Z

170

Measurement of spin wave instability magnon distributions for subsidiary absorption in yttrium iron garnet films by Brillouin light scattering  

Science Journals Connector (OSTI)

The first evidence for a wide distribution in the critical mode wave vectors above the spin wave instability threshold for subsidiary absorption is reported. The Brillouin light scattering BLS measurements were done on 4.15 ?m thick yttrium iron garnet films with the static field and the 8.47 GHz linearly polarized microwave field in plane. The distribution in the critical mode wave number is broad, with widths of about 0.51042104 cm-1 and shapes which change with field and power. These results cast doubts on the validity of simple two mode models for the analysis of self-oscillation, chaos, and related effects above threshold.

P. Kabos; G. Wiese; C. E. Patton

1994-03-28T23:59:59.000Z

171

An antidot array as an edge for total non-reflection of spin waves in yttrium iron garnet films  

SciTech Connect

An array of antidots has been used as an edge to create the phenomenon of total non-reflection of spin waves in yttrium iron garnet films. At the critical angle between the line of antidots and the magnetic field, we observe a high-intensity beam of spin waves moving along the line of antidots. The properties of these waves are investigated experimentally by Brillouin light scattering spectroscopy. The conditions required for the occurrence of this phenomenon based on an analysis of the properties of the isofrequency dependencies are presented. The numerical simulations are in good agreement with those of the experimental measurements.

Gieniusz, R., E-mail: gieniusz@uwb.edu.pl; Guzowska, U.; Maziewski, A. [Faculty of Physics, University of Bia?ystok, Lipowa 41, 15-424 Bia?ystok (Poland); Bessonov, V. D. [Faculty of Physics, University of Bia?ystok, Lipowa 41, 15-424 Bia?ystok (Poland); Institute of Metal Physics, Ural Division of RAS, Yekaterinburg 620041 (Russian Federation); Stognii, A. I. [Scientific-Practical Materials Research Center at National Academy of Sciences of Belarus, ul. P. Brovki 19, Minsk 220072 (Belarus)

2014-02-24T23:59:59.000Z

172

Negative permittivity and permeability spectra of Cu/yttrium iron garnet hybrid granular composite materials in the microwave frequency range  

SciTech Connect

The relative complex permittivity and permeability spectra of the coagulated copper and yttrium iron garnet (Cu/YIG) hybrid granular composite materials have been studied in the microwave range. The insulator to metal transition was observed at the percolation threshold of Cu particle content (?{sub Cu}?=?16.0 vol. %) in the electrical conductivity. In the percolation threshold, the low frequency plasmonic state caused by the metallic Cu particle networks was observed. The percolated Cu/YIG granular composites show simultaneous negative permittivity and permeability spectra under external magnetic fields.

Tsutaoka, Takanori, E-mail: tsutaok@hiroshima-u.ac.jp; Fukuyama, Koki; Kinoshita, Hideaki [Graduate School of Education, Hiroshima University, 1-1-1, Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8524 (Japan)] [Graduate School of Education, Hiroshima University, 1-1-1, Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8524 (Japan); Kasagi, Teruhiro [Tokuyama College of Technology, Gakuendai, Shunan, Yamaguchi 745-8585 (Japan)] [Tokuyama College of Technology, Gakuendai, Shunan, Yamaguchi 745-8585 (Japan); Yamamoto, Shinichiro; Hatakeyama, Kenichi [Graduate School of Engineering, University of Hyogo, Syosha, Himeji 671-2201 (Japan)] [Graduate School of Engineering, University of Hyogo, Syosha, Himeji 671-2201 (Japan)

2013-12-23T23:59:59.000Z

173

High temperature alkali corrosion of ceramics in coal gas. Quarterly progress report No. 6, December 1, 1992--February 28, 1993  

SciTech Connect

The high temperature alkali corrosion kinetics of SiC have been systematically investigated from 950 to 1100{degrees}C at 0.63 vol % alkali vapor concentration. The corrosion rate in the presence of alkaliis approximately 10{sup 4} to 10{sup 5} times faster than the oxidation rate of SiC in air. The activation energy associated with the alkali corrosion is 406 kJ/mol, indicating a highly temperature-dependent reaction rate. The rate-controlling step of the overall reaction is likely to be the dissolution of silica in the sodium silicate liquid, based on the oxygen diffusivity data.

Pickrell, G.R.; Sun, T.; Brown, J.J.

1992-02-24T23:59:59.000Z

174

High temperature alkali corrosion of ceramics in coal gas. Quarterly progress report No. 5, September 1, 1992--December 1, 1992  

SciTech Connect

Calcia-stabilized cubic zirconia was mixed with soda, then fired at 840-1100 C. SiC was also reacted with alkali-containing atmosphere at 1000 C.

Pickrell, G.R.; Sun, T.; Brown, J.J

1992-11-24T23:59:59.000Z

175

Note: An ion source for alkali metal implantation beneath graphene and hexagonal boron nitride monolayers on transition metals  

SciTech Connect

The construction of an alkali-metal ion source is presented. It allows the acceleration of rubidium ions to an energy that enables the penetration through monolayers of graphene and hexagonal boron nitride. Rb atoms are sublimated from an alkali-metal dispenser. The ionization is obtained by surface ionization and desorption from a hot high work function surface. The ion current is easily controlled by the temperature of ionizer. Scanning Tunneling Microscopy measurements confirm ion implantation.

Lima, L. H. de [Instituto de Fsica Gleb Wataghin, Universidade Estadual de Campinas, 13083-859, Campinas, SP (Brazil)] [Instituto de Fsica Gleb Wataghin, Universidade Estadual de Campinas, 13083-859, Campinas, SP (Brazil); Cun, H. Y.; Hemmi, A.; Klin, T.; Greber, T. [Physik-Institut, Universitt Zrich, Winterthurerstrasse 190, CH-8057 Zrich (Switzerland)] [Physik-Institut, Universitt Zrich, Winterthurerstrasse 190, CH-8057 Zrich (Switzerland)

2013-12-15T23:59:59.000Z

176

Post-Harvest Processing Methods for Reduction of Silica and Alkali Metals in Wheat Straw  

SciTech Connect

Silica and alkali metals in wheat straw limit its use for bioenergy and gasification. Slag deposits occur via the eutectic melting of SiO2 with K2O, trapping chlorides at surfaces and causing corrosion. A minimum melting point of 950C is desirable, corresponding to SiO2:K2O of about 3:1. Mild chemical treatments were used to reduce Si, K, and Cl, while varying temperature, concentration, %-solids, and time. Dilute acid was more effective at removing K and Cl, while dilute alkali was more effective for Si. Reduction of minerals in this manner may prove economical for increasing utilization of the straw for combustion or gasification.

Thompson, David Neal; Lacey, Jeffrey Alan; Shaw, Peter Gordon

2002-04-01T23:59:59.000Z

177

Electron-gas model for molecular crystals. Application to the alkali and alkaline-earth hydroxides  

Science Journals Connector (OSTI)

A theoretical model for calculating the structure and energy of molecular crystals is presented. The model, which requires no empirical parameters, is based on the Gordon-Kim electron-gas model. Many-body effects are incorporated through the mutual overlap of the electronic distributions of all molecules or ions in the neighborhood of a given point in the crystal. Effects of the crystal environment on the molecular properties are approximated by inclusion of an electrostatic potential that mimics the crystal potential in ab initio calculations on the individual component molecules or ions in the crystal. Application is made to a number of alkali and alkaline-earth hydroxide crystals in which the components are taken to be hydroxide ions, and alkali or alkaline-earth cations. The agreement with experiment is good (within 2.5% in lattice constants and 1.1% in lattice dissociation energy). The calculated changes in molecular dipole moment are between 20 and 40%.

R. LeSar and R. G. Gordon

1982-06-15T23:59:59.000Z

178

Technical report for the alkali lake ecological assessment, phase 1 reconnaissance (FY 91 and FY 92)  

SciTech Connect

The report summarizes the results of three field survey trips (June and September 1991, May 1992) taken to investigate the ecological effects associated with the release of over a million gallons of hazardous waste from herbicide production on the Alkali Lake playa. Sampling of soil, sediment, groundwater, soil-dwelling invertebrates and vegetation confirmed that hazardous materials from the waste disposal area are migrating westerly within the shallow aquifer to West Alkali Lake. Two areas of dead vegetation were identified and permanently marked to determine if these areas are changing in size and location. Preliminary calculations using a linear food-chain model suggested that small mammalian herbivores would probably not display adverse effects due to dietary exposures to the contaminants. However, nestling shorebirds may be exposed to concentrations potentially associated with adverse biological effects.

Linder, G.

1993-03-01T23:59:59.000Z

179

The 3-Dimensional q-Deformed Harmonic Oscillator and Magic Numbers of Alkali Metal Clusters  

E-Print Network (OSTI)

Magic numbers predicted by a 3-dimensional q-deformed harmonic oscillator with Uq(3) > SOq(3) symmetry are compared to experimental data for alkali metal clusters, as well as to theoretical predictions of jellium models, Woods--Saxon and wine bottle potentials, and to the classification scheme using the 3n+l pseudo quantum number. The 3-dimensional q-deformed harmonic oscillator correctly predicts all experimentally observed magic numbers up to 1500 (which is the expected limit of validity for theories based on the filling of electronic shells), thus indicating that Uq(3), which is a nonlinear extension of the U(3) symmetry of the spherical (3-dimensional isotropic) harmonic oscillator, is a good candidate for being the symmetry of systems of alkali metal clusters.

Bonatsos, Dennis; Raychev, P P; Roussev, R P; Terziev, P A; Bonatsos, Dennis

1999-01-01T23:59:59.000Z

180

Alkali Metal Control over NN Cleavage in Iron Complexes  

Science Journals Connector (OSTI)

We propose that the reaction of 1-Na with benzene is slower because the mechanism is different; after all, there are not enough Fe sites to accept the six electrons from two N3 to reform N2 in the mechanism followed by 1-K and 1-Rb. ... Therefore, extreme care must be taken when synthesizing and handling these alkali graphite reductants! ... This work was supported by the National Institutes of Health (GM065313) and Yale University. ...

Katarzyna Grubel; William W. Brennessel; Brandon Q. Mercado; Patrick L. Holland

2014-11-20T23:59:59.000Z

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


181

Electrochemical cell with negative active material based on an alkali or alkaline earth metal  

SciTech Connect

In an electrochemical cell the negative active material is an alkali or alkaline earth metal, such as lithium, and the electrolyte comprises a solute and at least one solvent selected from the liquid oxyhalides and which serves also as the positive active material. The electrolyte further comprises a mineral substance the effect of which is to significantly reduce the voltage rise delay of the cell.

Vallin, D.; Chenebault, P.; Grassien, J.-V.; Kerouanton, A.

1985-10-15T23:59:59.000Z

182

Alkali or alkaline earth metal promoted catalyst and a process for methanol synthesis using alkali or alkaline earth metals as promoters  

DOE Patents (OSTI)

The present invention relates to a novel route for the synthesis of methanol, and more specifically to the production of methanol by contacting synthesis gas under relatively mild conditions in a slurry phase with a heterogeneous catalyst comprising reduced copper chromite impregnated with an alkali or alkaline earth metal. There is thus no need to add a separate alkali or alkaline earth compound. The present invention allows the synthesis of methanol to occur in the temperature range of approximately 100--160 C and the pressure range of 40--65 atm. The process produces methanol with up to 90% syngas conversion per pass and up to 95% methanol selectivity. The only major by-product is a small amount of easily separated methyl formate. Very small amounts of water, carbon dioxide and dimethyl ether are also produced. The present catalyst combination also is capable of tolerating fluctuations in the H[sub 2]/CO ratio without major deleterious effect on the reaction rate. Furthermore, carbon dioxide and water are also tolerated without substantial catalyst deactivation.

Tierney, J.W.; Wender, I.; Palekar, V.M.

1995-01-31T23:59:59.000Z

183

Role of relative humidity in concrete expansion due to alkali-silica reaction and delayed ettringite formation: relative humidity thresholds, measurement methods, and coatings to mitigate expansion.  

E-Print Network (OSTI)

??Premature concrete deterioration due to alkali-silica reaction (ASR) and delayed ettringite formation (DEF) is a significant problem all over the world. In cases where these (more)

Rust, Charles Karissa

2009-01-01T23:59:59.000Z

184

An investigation of the transfer of alkali metal chlorides from dimethyl sulfoxide to water  

E-Print Network (OSTI)

-to-back' with water as the solvent in one cell and a non- aqueous solvent in the other. The two cells used in this investigation were each composed of silver-silver chloride electrodes in the same solution with dropping alkali metal amalgam electrodes. The solute.... The dropping amalgam electrodes are written only once since they were connected by a common amalgam reservoir. When the external circuit between the two silver-silver chloride electrodes was closed a current flowed and the net result oi the electrode...

Williams, Roger

1966-01-01T23:59:59.000Z

185

Positron binding to alkali-metal hydrides: The role of molecular vibrations  

SciTech Connect

The bound vibrational levels for J=0 have been computed for the series of alkali-metal hydride molecules from LiH to RbH, including NaH and KH. For all four molecules the corresponding potential-energy curves have been obtained for each isolated species and for its positron-bound complex (e{sup +}XH). It is found that the calculated positron affinity values strongly depend on the molecular vibrational state for which they are obtained and invariably increase as the molecular vibrational energy content increases. The consequences of our findings on the likelihood of possibly detecting such weakly bound species are briefly discussed.

Gianturco, Franco A.; Franz, Jan; Buenker, Robert J.; Liebermann, Heinz-Peter; Pichl, Lukas; Rost, Jan-Michael; Tachikawa, Masanori; Kimura, Mineo [Department of Chemistry and INFM, University of Rome La Sapienza, Piazzale A. Moro 5, 00185 Rome (Italy); Fachbereich C-Mathematik und Naturwissenschaften, Bergische Universitaet Wuppertal, Gaussstrasse 20, D-42119 Wuppertal (Germany); Max Planck Institute for the Physics of Complex Systems, Noethnitzer St. 38, D-01187 Dresden (Germany); Graduate School of Science, Yokohama-city University, Seto 22-2, Kanazawa-ku, Yokohama 236-0027 (Japan); Graduate School of Sciences, Kyushu University, Fukuoka 812-8581 (Japan)

2006-02-15T23:59:59.000Z

186

THE JOURNAL OF CHEMICAL PHYSICS VOLUME 58, NUMBER 2 15 JANUARY 1973 Internal state distribution of alkali dimers in supersonic nozzle beams*  

E-Print Network (OSTI)

of alkali dimers in supersonic nozzle beams* M. P. Sinha, A. Schultzt, and R. N. Zare Department o the white light and laser-induced fluorescence excited in a nozzle beam of Na2 molecules, we have measured beams with various stagnation pressures (50-240 torr) of alkali metal and with nozzles of different

Zare, Richard N.

187

Electron beam driven alkali metal atom source for loading a magneto-optical trap in a cryogenic environment  

E-Print Network (OSTI)

We present a versatile and compact electron beam driven source for alkali metal atoms, which can be implemented in cryostats. With a heat load of less than 10mW, the heat dissipation normalized to the atoms loaded into the magneto-optical Trap (MOT), is about a factor 1000 smaller than for a typical alkali metal dispenser. The measured linear scaling of the MOT loading rate with electron current observed in the experiments, indicates that electron stimulated desorption is the corresponding mechanism to release the atoms.

S. Haslinger; R. Amsuess; Ch. Koller; C. Hufnagel; N. Lippok; J. Majer; J. Verdu; S. Schneider; J. Schmiedmayer

2010-03-26T23:59:59.000Z

188

Planning and Implementation of an Alkali-Surfactant-Polymer (ASP) Field Project  

SciTech Connect

The Warden ASP project has progressed from the initial planning stage to construction of an injection plant. An ASP chemical system was designed based on laboratory evaluations that included interfacial tension, mobility requirements, rock-alkali interaction, fluid capabilities, and core tests. Field cores were obtained from the Permian No. 5 and No. 6 sands on the Warden lease in Sho-Vel-Tum oil field. A separate tank battery for the pilot pattern area was installed, and a field tracer test is currently being evaluated. Tracer test results to date indicate that there is no major fracturing in the No. 5 sand. There is indication, however, of some channeling through high permeability sand. The field injection plant was designed, and construction is in progress. Several variations of injection plant design have been evaluated. Some plant design details, such as alkali storage, were found to be dependent on the availability of use equipment and project budget. The surfactant storage facility design was shown to be dependent on surfactant rheology.

French, T.

1999-03-05T23:59:59.000Z

189

3718-F Alkali Metal Treatment and Storage Facility Closure Plan. Revision 1  

SciTech Connect

The Hanford Site, located northwest of the city of Richland, Washington, houses reactors, chemical-separation systems, and related facilities used for the production of special nuclear materials, as well as for activities associated with nuclear energy development. The 300 Area of the Hanford Site contains reactor fuel manufacturing facilities and several research and development laboratories. The 3718-F Alkali Metal Treatment and Storage Facility (3718-F Facility), located in the 300 Area, was used to store and treat alkali metal wastes. Therefore, it is subject to the regulatory requirements for the storage and treatment of dangerous wastes. Closure will be conducted pursuant to the requirements of the Washington Administrative Code (WAC) 173-303-610 (Ecology 1989) and 40 CFR 270.1. Closure also will satisfy the thermal treatment facility closure requirements of 40 CFR 265.381. This closure plan presents a description of the 3718-F Facility, the history of wastes managed, and the approach that will be followed to close the facility. Only hazardous constituents derived from 3718-F Facility operations will be addressed.

none,

1992-11-01T23:59:59.000Z

190

Electrical Resistance and Thermo-Electric Power of the Alkali Metals  

Science Journals Connector (OSTI)

Electrical resistance and thermo-electric power of the five alkali metals, -183C to 250C.Pure samples of the metals were fused into glass or quartz tubes, and measurements were made by means of thermo-junctions sealed into each end. Enough points were secured in each case to determine the slopes and the breaks in the curves. In both the resistance and thermo-electric power lines, changes of slope are observed beginning gradually 100 degrees or more below the melting point. These are taken to indicate transformations in each case from an ? to a ? form. These transformations occur at approximately the temperatures, 50C for Li, -20C to +20C for Na, -120C for K, -35C for Rb, and -80C for Cs. In all cases a sharp rise in thermo-electric power and resistance occurs as the melting point is approached. The temperature coefficients of resistance decrease smoothly with increasing atomic weight for all forms.Atomic heat of electrons in the alkali metals.The atomic heat of electricity as computed from thermo-electric data is approximately 0.24 cal. for Na and K, and 0.58 cal. for Rb and Cs. The values are too small to account for the observed excess of the atomic heats for these metals above the equipartition value.

Charles C. Bidwell

1924-03-01T23:59:59.000Z

191

The influence of high quantity of fly ash on reducing the expansion due to ASR in the presence of alkalis  

E-Print Network (OSTI)

A testing program was devised to study the role of high volume fly ash (HVFA) in reducing the expansion caused by alkali-silica reaction (ASR). A series of modified ASTM C 1260 tests were performed, where the replacement of cement by Class F fly ash...

Mohidekar, Saleel D.

2000-01-01T23:59:59.000Z

192

Rheological properties of water-coal slurries based on brown coal in the presence of sodium lignosulfonates and alkali  

SciTech Connect

The effect of the oxidized surface of brown coal on the structural and rheological properties of water-coal slurries was found. The kinetics of structure formation processes in water-coal slurries based on as-received and oxidized brown coal was studied. The effect of lignosulfonate and alkali additives on the samples of brown coal was considered.

D.P. Savitskii; A.S. Makarov; V.A. Zavgorodnii [National Academy of Sciences of Ukraine, Kiev (Ukraine). Dumanskii Institute of Colloid and Water Chemistry

2009-07-01T23:59:59.000Z

193

DOI: 10.1002/chem.200702012 Properties of Alkali Metal Atoms Deposited on a MgO Surface: A  

E-Print Network (OSTI)

, such as in tungsten bronzes, this may turn a wide-gap insulating oxide into a material with metallic conductivity, Na, K, Rb, and Cs) on the surface of MgO powders and thin films has been stud- ied by means of EPR. These reductions in the hfccs are due to polarization effects and are not connected to ionization of the alkali

Gao, Hongjun

194

Heating rates in collisionally opaque alkali-metal atom traps: Role of secondary collisions  

Science Journals Connector (OSTI)

Grazing collisions with background gas are the major cause of trap loss and trap heating in atom traps. To first order, these effects do not depend on the trap density. In collisionally opaque trapped atom clouds, however, scattered atoms with an energy E larger than the effective trap depth Eeff, which are destined to escape from the atom cloud, will have a finite probability for a secondary collision. This results in a contribution to the heating rate that depends on the column density ?nl? of the trapped atoms, i.e., the product of density and characteristic size of the trap. For alkali-metal atom traps, secondary collisions are quite important due to the strong long-range interaction with like atoms. We derive a simple analytical expression for the secondary heating rate, showing a dependency proportional to ?nl??Eeff1/2. When extrapolating to a vanishing column density, only primary collisions with the background gas will contribute to the heating rate. This contribution is rather small, due to the weak long-range interaction of the usual background gas species in an ultrahigh-vacuum systemHe, Ne, or Arwith the trapped alkali-metal atoms. We conclude that the transition between trap-loss collisions and heating collisions is determined by a cutoff energy 200??K<~Eeff<~400??K, much smaller than the actual trap depth E in most magnetic traps. Atoms with an energy Eeffalkali-metal atoms Li through Cs as a function of the effective trap depth, the column density of the trap, and the species in the background gas. The predictions of our model are in good agreement with the experimental data of Myatt for heating rates in high-density 87Rb-atom magnetic traps at JILA, including the effect of the rf shield and the composition of the background gas. It is shown that collisions with atoms from the Oort cloud also contribute to the heating rate. For 85Rb the calculated heating rate is below the experimentally observed value at JILA, supporting the idea that inelastic collisions in the trap are the major source of heating.

H. C. W. Beijerinck

2000-11-15T23:59:59.000Z

195

Carrier-wave Rabi flopping signatures in high-order harmonic generation for alkali atoms  

E-Print Network (OSTI)

We present the first theoretical investigation of carrier-wave Rabi flopping in real atoms by employing numerical simulations of high-order harmonic generation (HHG) in alkali species. Given the short HHG cutoff, related to the low saturation intensity, we concentrate on the features of the third harmonic of sodium (Na) and potassium (K) atoms. For pulse areas of 2$\\pi$ and Na atoms, a characteristic unique peak appears, which, after analyzing the ground state population, we correlate with the conventional Rabi flopping. On the other hand, for larger pulse areas, carrier-wave Rabi flopping occurs, and is associated with a more complex structure in the third harmonic. These new characteristics observed in K atoms indicate the breakdown of the area theorem, as was already demonstrated under similar circumstances in narrow band gap semiconductors.

Ciappina, M F; Landsman, A S; Zimmermann, T; Lewenstein, M; Roso, L; Krausz, F

2015-01-01T23:59:59.000Z

196

Methanol synthesis using a catalyst combination of alkali or alkaline earth salts and reduced copper chromite  

DOE Patents (OSTI)

The present invention relates to a novel route for the synthesis of methanol, and more specifically to the production of methanol by contacting synthesis gas under relatively mild conditions in a slurry phase with a catalyst combination comprising reduced copper chromite and basic alkali salts or alkaline earth salts. The present invention allows the synthesis of methanol to occur in the temperature range of approximately 100.degree.-160.degree. C. and the pressure range of 40-65 atm. The process produces methanol with up to 90% syngas conversion per pass and up to 95% methanol selectivity. The only major by-product is a small amount of easily separated methyl formate. Very small amounts of water, carbon dioxide and dimethyl ether are also produced. The present catalyst combination also is capable of tolerating fluctuations in the H.sub.2 /CO ratio without major deleterious effect on the reaction rate. Furthermore, carbon dioxide and water are also tolerated without substantial catalyst deactivation.

Tierney, John W. (Pittsburgh, PA); Wender, Irving (Pittsburgh, PA); Palekar, Vishwesh M. (Pittsburgh, PA)

1995-01-01T23:59:59.000Z

197

Alkali-metal stoichiometry and structure of K4C60 and Rb4C60  

Science Journals Connector (OSTI)

Alkali-metal fulleride samples KxC60 and RbxC60 with stoichiometries close to x=4 were examined with x-ray powder-diffraction measurements at room temperature. We have shown through Rietveld refinements that A4C60 is a line phase with charge per lattice site that is closer to integer than in any other fulleride. The C60 molecules are disordered between two possible orientations within the body-centered-tetragonal lattice with the three orthogonal twofold rotation axes aligned with the unit-cell translation vectors in space group I4/mmm. The x-ray diffraction results exclude any quadrupole distortion of the fullerene molecule beyond about 0.04 ?. These results suggest that K4C60 and Rb4C60 may be Mott insulators.

Christine A. Kuntscher; Gtz M. Bendele; Peter W. Stephens

1997-02-01T23:59:59.000Z

198

Energy conservation in the primary aluminum and chlor-alkali industries  

SciTech Connect

The primary aluminum and chlor-alkali industries together use nearly 13% of the electrical energy consumed by US industry. As part of its mission to promote energy conservation in basic US industries, the DOE surveys the present technological status of the major electrochemical industries and evaluates promising technological innovations that may lead to reduced energy requirements. This study provides technical and economic analyses in support of a government program of research and development in advanced electrolytic technology. This program is intended to supplement the development efforts directed toward energy savings by private industry. Sections II and III of this report cover aluminum and chlorine production processes only, since these two industries represent over 90% of the electrical energy requirements of all electrolytic industries in the United States. Section IV examines barriers to accelerated research and development by the electrolytic industries, and makes suggestions for government actions to overcome these barriers.

Not Available

1980-10-01T23:59:59.000Z

199

Comparative and quantitative study of neutral debris emanated from tin plasmas produced by neodymium-doped yttrium-aluminum-garnet and carbon dioxide laser pulses  

SciTech Connect

Amount of neutral debris emanated from extreme ultraviolet light source must be minimized to maximize its lifetime. Emanation of neutral atomic debris was experimentally investigated using laser-induced-fluorescence technique for carbon dioxide (CO{sub 2}, 10.6 {mu}m in wavelength) and Nd-doped yttrium-aluminum-garnet (Nd:YAG, 1.064 {mu}m) lasers irradiated tin foils. Total number of neutral atomic debris from CO{sub 2} laser-irradiated tin foils was 1/100 times smaller than that from Nd:YAG irradiated ones. Competitiveness of CO{sub 2} laser was revealed in terms of debris mitigation.

Matsuoka, Yuji; Nakai, Yuki; Fujioka, Shinsuke; Maeda, Shinsuke; Shimomura, Masashi; Nishimura, Hiroaki [Institute of Laser Engineering, Osaka University, 2-6 Yamada-Oka, Osaka 565-0871 (Japan); Shimada, Yoshinori; Sunahara, Atsushi [Institute for Laser Technology, Osaka University, 2-6 Yamada-Oka, Osaka 565-0871 (Japan); Yoshida, Minoru [Department of Electronics and Electronic Engineering, Kinki University, 3-4-1 Kowakae, Osaka 577-8502 (Japan)

2010-09-13T23:59:59.000Z

200

Modeling of flowing gas diode pumped alkali lasers: dependence of the operation on the gas velocity and on the nature of the buffer gas  

Science Journals Connector (OSTI)

A simple, semi-analytical model of flowing gas diode pumped alkali lasers (DPALs) is presented. The model takes into account the rise of temperature in the lasing medium with...

Barmashenko, B D; Rosenwaks, S

2012-01-01T23:59:59.000Z

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


201

Ground state of the polar alkali-metal-atom-strontium molecules: Potential energy curve and permanent dipole moment  

SciTech Connect

In this study, we investigate the structure of the polar alkali-metal-atom-strontium diatomic molecules as possible candidates for the realization of samples of ultracold polar molecular species not yet investigated experimentally. Using a quantum chemistry approach based on effective core potentials and core polarization potentials, we model these systems as effective three-valence-electron systems, allowing for calculation of electronic properties with full configuration interaction. The potential curve and the permanent dipole moment of the {sup 2}{Sigma}{sup +} ground state are determined as functions of the internuclear distance for LiSr, NaSr, KSr, RbSr, and CsSr molecules. These molecules are found to exhibit a significant permanent dipole moment, though smaller than those of the alkali-metal-atom-Rb molecules.

Guerout, R. [Laboratoire Kastler-Brossel, CNRS, ENS, Univ Pierre et Marie Curie case 74, Campus Jussieu, F-75252 Paris Cedex 05 (France); Aymar, M.; Dulieu, O. [Laboratoire Aime Cotton, CNRS, UPR3321, Bat. 505, Univ Paris-Sud, F-91405 Orsay Cedex (France)

2010-10-15T23:59:59.000Z

202

The ground state of the polar alkali-Strontium molecules: potential energy curve and permanent dipole moment  

E-Print Network (OSTI)

In this study, we investigate the structure of the polar alkali-Strontium diatomic molecules as possible candidates for the realization of samples of new species of ultracold polar molecules. Using a quantum chemistry approach based on Effective Core Potentials and Core Polarization Potentials, we model these systems as effective three valence electron systems, allowing for calculation of electronic properties with Full Configuration Interaction. The potential curve and the permanent dipole moment of the $^2\\Sigma^+$ ground state are determined as functions of the internuclear distances for LiSr, NaSr, KSr, RbSr, and CsSr molecules. These molecules are found to exhibit a significant permanent dipole moment, though smaller than those of the alkali-Rb molecules.

Romain Gurout; Mireille Aymar; Olivier Dulieu

2010-07-12T23:59:59.000Z

203

The Ionization of Neon and Argon by Positive Alkali Ions of Energies from 650 to 2000 Volts  

Science Journals Connector (OSTI)

With an apparatus of new design the study of the ionization of neon and argon by positive alkali ions has been extended to accelerating potentials as high as 2000 volts. The results obtained are in good quantitative agreement with the previous work at the low potentials. In a number of cases the efficiency of ionization reaches a maximum at accelerating potentials less than 2000 volts.

J. Carlisle Mouzon

1932-09-01T23:59:59.000Z

204

A computational analysis of the evaporator/artery of an alkali metal thermal to electric conversion (AMTEC) PX series cell  

E-Print Network (OSTI)

, while minimizing mass. Current technology, such as Radioisotope Thermoelectric Generators (RTG's) are reliable, but do not supply the power conversion efficiencies desired for future space missions. That leads to Alkali Metal Thermal to Electric...-series cells to generate electricity for the deep space vehicle. The higher efficiency of AMTEC compared to other conversion technologies, such as Radioisotope Thermoelectric Generators (RTG's), results in less energy source material being launched...

Pyrtle, Frank

1999-01-01T23:59:59.000Z

205

Low-temperature synthesis of Li{sub 7}La{sub 3}Zr{sub 2}O{sub 12} with cubic garnet-type structure  

SciTech Connect

Highlights: Black-Right-Pointing-Pointer One-step synthesis and its optimization of cubic garnet Li{sub 7}La{sub 3}Zr{sub 2}O{sub 12} at 750 Degree-Sign C. Black-Right-Pointing-Pointer Instability above 800 Degree-Sign C of the Al-free cubic Li{sub 7}La{sub 3}Zr{sub 2}O{sub 12}. Black-Right-Pointing-Pointer Li{sup +}-ion conductivity without adventitious Al{sup 3+}. -- Abstract: In this paper, we report the direct synthesis of Li{sub 7}La{sub 3}Zr{sub 2}O{sub 12} with the cubic garnet-type structure at low temperature with a lattice constant of 13.0035 Angstrom-Sign . The synthesis condition is optimized to be at 750 Degree-Sign C for 8 h with 30 wt% excess lithium salt. No intermediate grinding was involved in this straightforward route. Without the adventitious of Al{sup 3+}, the cubic Li{sub 7}La{sub 3}Zr{sub 2}O{sub 12} is unstable above 800 Degree-Sign C and has an ionic conductivity of the order of 10{sup -6} S cm{sup -1}.

Xie, Hui [Texas Materials Institute, ETC 9.184, University of Texas at Austin, Austin, TX 78712 (United States)] [Texas Materials Institute, ETC 9.184, University of Texas at Austin, Austin, TX 78712 (United States); Li, Yutao [Texas Materials Institute, ETC 9.184, University of Texas at Austin, Austin, TX 78712 (United States) [Texas Materials Institute, ETC 9.184, University of Texas at Austin, Austin, TX 78712 (United States); State Key Laboratory of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084 (China); Goodenough, John B., E-mail: jgoodenough@mail.utexas.edu [Texas Materials Institute, ETC 9.184, University of Texas at Austin, Austin, TX 78712 (United States)

2012-05-15T23:59:59.000Z

206

Kinetic studies for elucidation of the promoter effect of alkali in Fischer-Tropsch iron catalysts  

SciTech Connect

The kinetics of the formation of hydrocarbons in Fischer-Tropsch synthesis and of consecutive reactions, i.e., hydrogenation and double bond isomerization of primarily formed 1-alkenes, were studied in a slurry-phase reactor using alkalized and nonalkalized precipitated iron catalysts. Both consecutive reactions have an order of about -2 with respect to carbon monoxide and an order of about 1 with respect to 1-alkenes. The order with respect to hydrogen is 1 for the hydrocarbon formation and also 1 for the consecutive hydrogenation, but 0 for the consecutive isomerization. The reaction orders are not changed by addition of K{sub 2}CO{sub 3} to the catalyst. The kinetics of consecutive reactions can be interpreted by competitive adsorption of 1-alkene and carbon monoxide. Alkali addition causes an increase in the strength of carbon monoxide adsorption and consequently a decrease in 1-alkene adsorption so that the rates of the consecutive reactions are reduced. This hypothesis could be proved by studies of 1-hexene hydrogenation in the presence and absence of carbon monoxide for alkalized and nonalkalized iron catalysts. The kinetics were studied in the ranges 1.3 < P{sub CO}(10{sup 5} Pa) < 7, 1.6 < P{sub H{sub 2}}(10{sup 5} Pa) < 9, and 490 K < T < 530 K.

Herzog, K.; Gaube, J. (Institut fuer Chemische Technologie der Technischen Hochschule Darmstadt, Darmstadt (West Germany))

1989-02-01T23:59:59.000Z

207

Durability and microstructure characteristics of alkali activated coal bottom ash geopolymer cement  

Science Journals Connector (OSTI)

Abstract Many studies have focused on the production of mortar and concrete without cement. This is referred to as geopolymer mortar or concrete. This paper discusses the effect of alkali oxides (Na2O=8, 12, 16wt.% and SiO2=0, 4, 8, 12wt.%) on compressive strength, microstructure and durability of circulating fluidized bed combustion coal bottom ash (CBA) geopolymer cements (GC). Durability and morphology tests were carried out through heating and freezing tests. The highest compressive strength (25.83MPa) was achieved at Na2O wt.%=12, SiO2 wt.%=8. The optimum atomic ratios for a compact microstructure were obtained for Si/Al between 3.5 and 4 and Si/Na close to 0.5. Following the sintering, the main reaction products (N-A-S-H gel) became more amorphous at 800C, attaining Si/Al and Si/Na atomic ratios of 4.54 and 0.98. Sodium carbonate formation was observed at 800C. Also, the strength loss of GC was only 6.77% after 30 freeze-thaw cycles. The results show that durable geopolymer concrete without cement can be produced by using waste bottom coal ash. Therefore, the production of geopolymer concrete has a high environmental impact, decreasing waste material in addition to global warming.

?lker Bekir Topu; Mehmet U?ur Toprak; Tayfun Uyguno?lu

2014-01-01T23:59:59.000Z

208

Theory of the alkali-metal chemisorption on metal surfaces. II.  

Science Journals Connector (OSTI)

The electronic structure of alkali-metal adlayers on metal surfaces is studied by first-principles calculations within the local-density-functional theory as a function of coverage (?). Hexagonal Na layers with varying lattice constants are used as adlayers, and the substrate is modeled by the semi-infinite jellium with rs=2, 3, and 4. The results obtained refine upon those in a previous work where the substrate was approximated by a jellium slab [Phys. Rev. B 38, 8006 (1988)]. In spite of the large potential lowering in the vacuum, the density of states in a Na sphere is rather insensitive to ?, except that the atomiclike resonances at low ? are broadened with increasing ? because of the formation of adlayer bands. For all the substrates, the bonding-antibonding boundary with regard to the Na-jellium bonding coincides with the Fermi level at the lowest ?, which implies that the covalency in the Na-jellium bond and the interatomic polarization term in the Na-induced dipole moment become the largest at the lowest ?. The rapid decrease of the dipole moment at higher ? is caused mainly by the direct Na-Na interaction due to the orbital overlap, which leads to a stronger Na-Na bond and simultaneously to a weaker Na-jellium bond, rather than by the indirect dipole-dipole interaction.

H. Ishida

1990-12-15T23:59:59.000Z

209

Kimzeyite garnet phosphors  

DOE Patents (OSTI)

A phosphor of formula I is included in a phosphor composition in a lighting apparatus capable of emitting white light, Ca.sub.3-x-zSr.sub.xCe.sub.zM.sup.1.sub.2M.sup.2AlSiO.sub.12 (I) wherein M.sup.1 is Hf, Zr, or a combination thereof; M.sup.2 is Al, or a combination of Al and Ga; z<3-x; and 0.2>x.gtoreq.0. The lighting apparatus includes a semiconductor light source in addition to the phosphor composition.

Lyons, Robert Joseph

2013-05-14T23:59:59.000Z

210

Transformation of alkali metals during pyrolysis and gasification of a lignite  

SciTech Connect

Transformation of Na and K in a lignite was investigated during pyrolysis and gasification in a fixed-bed by using a serial dissolution method with H{sub 2}O, CH{sub 3}COONH{sub 4}, and HCl solutions. The evolution of the fractions of four forms in solid and alkali volatilization during pyrolysis and gasification was determined. The results show that a different mode of occurrence between Na and of K in coal existed. Na in coal can be nearly completely dissolved by H{sub 2}O, CH{sub 3}COONH{sub 4}, and HCl solution. However, K in coal exists almost in the stable forms. Both H{sub 2}O soluble and CH{sub 3}COONH{sub 4} soluble Na and K fractions decline during pyrolysis and early gasification stage and increase a little with the process of char gasification. The stable form Na in the char produced during pyrolysis is transferred to other forms during char gasification via the pore opening and a series of chemical reactions. Na{sub 2}SO{sub 4} (K{sub 2}SO{sub 4}) may play an important role in producing stable forms such as Na{sub 2}O.Al{sub 2}O{sub 3}2SiO{sub 2} and K{sub 2}O.Al{sub 2}O{sub 3}.2SiO{sub 2} during pyrolysis. The fraction of HCl soluble K increases during pyrolysis but decreases markedly during the early gasification stage. 20 refs., 7 figs., 1 tabs.

Xiaofang Wei; Jiejie Huang; Tiefeng Liu; Yitian Fang; Yang Wang [Chinese Academy of Sciences, Taiyuan (China). Institute of Coal Chemistry

2008-05-15T23:59:59.000Z

211

Quantum magnetism in ultracold alkali and alkaline-earth fermion systems with symplectic symmetry  

Science Journals Connector (OSTI)

We numerically study the quantum magnetism of ultracold alkali and alkaline-earth fermion systems with large hyperfine spin F=32, which are characterized by a generic Sp(N) symmetry with N=4. The methods of exact diagonalization (ED) and density matrix renormalization group are employed for the large size one-dimensional (1D) systems, and the ED method is applied to a two-dimensional (2D) square lattice on small sizes. We focus on the magnetic exchange models in the Mott-insulating state at quarter-filling. Both 1D and 2D systems exhibit rich phase diagrams depending on the ratio between the spin exchanges J0 and J2 in the bond spin singlet and quintet channels, respectively. In one dimension, the ground states exhibit a long-range-ordered dimerization with a finite spin gap at J0/J2>1 and a gapless spin-liquid state at J0/J2?1, respectively. In the former and latter cases, the correlation functions exhibit the two-site and four-site periodicities, respectively. In two-dimensions, various spin-correlation functions are calculated up to the size of 44. The Nel-type spin correlation dominates at large values of J0/J2, while a 22 plaquette correlation is prominent at small values of this ratio. Between them, a columnar spin-Peierls dimerization correlation peaks. We infer the competition among the plaquette ordering, the dimer ordering, and the Nel ordering in the 2D system.

Hsiang-Hsuan Hung; Yupeng Wang; Congjun Wu

2011-08-02T23:59:59.000Z

212

Study of alkali- and sulfur-enhanced corrosion of advanced energy systems. Final report  

SciTech Connect

The initial stage of MHD anode corrosion process appears to be dominated by out-diffusion of metallic species into the powder deposit. In addition, K and S appear to diffuse into the native oxide and underlying metal substrate. The out-diffusion process clearly leads to a loss of metal species from either the native oxide or metal substrate, while in-diffusion leads to the formation of sulfides and possibly to the accumulation of K containing compounds which may ultimately flux the protective oxide scale. The results for MHD anodes may be compared with those from previous studies of alkali-sulfur enhanced corrosion of turbine alloys. Although the specific details of these studies differ, both agree that rapid or catastrophic corrosion is preceded by a variable length induction period. During this period, relatively small changes in weight are observed. However, the protective metal oxide scale is breached which establishes the condition for rapid direct attack by condensed corrosive deposits. Thus, the mechanisms and kinetics of processes associated with the induction period are of great interest in understanding the survivability of various alloys. In the corrosion modeling effort, it was found that a simple model which considered only the diffusion-limited corrosion of iron did not correctly predict the iron corrosion product species for iron-based alloys. This lack of agreement was due to the absence of the treatment of other metal constituents in the alloy which form corrosion products. A more detailed model which includes equilibrium and diffusion relations for all metal species is required for accurate modeling of the corrosion product composition. 14 refs.

Stinespring, C.; Annen, K.; Stewart, G.

1984-01-01T23:59:59.000Z

213

Structure of the Alkali-metal-atom-Strontium molecular ions: towards photoassociation and formation of cold molecular ions  

E-Print Network (OSTI)

The potential energy curves, permanent and transition dipole moments, and the static dipolar polarizability, of molecular ions composed of one alkali-metal atom and a Strontium ion are determined with a quantum chemistry approach. The molecular ions are treated as effective two-electron systems and are treated using effective core potentials including core polarization, large gaussian basis sets, and full configuration interaction. In the perspective of upcoming experiments aiming at merging cold atom and cold ion traps, possible paths for radiative charge exchange, photoassociation of a cold Lithium or Rubidium atom and a Strontium ion are discussed, as well as the formation of stable molecular ions.

Mireille Aymar; Romain Gurout; Olivier Dulieu

2011-02-24T23:59:59.000Z

214

Structure of the alkali-metal-atom + strontium molecular ions: Towards photoassociation and formation of cold molecular ions  

SciTech Connect

The potential energy curves, permanent and transition dipole moments, and the static dipolar polarizability, of molecular ions composed of one alkali-metal atom and a strontium ion are determined with a quantum chemistry approach. The molecular ions are treated as effective two-electron systems and are treated using effective core potentials including core polarization, large gaussian basis sets, and full configuration interaction. In the perspective of upcoming experiments aiming at merging cold atom and cold ion traps, possible paths for radiative charge exchange, photoassociation of a cold lithium or rubidium atom and a strontium ion are discussed, as well as the formation of stable molecular ions.

Aymar, M.; Dulieu, O. [Laboratoire Aime Cotton, CNRS, UPR3321, Ba circumflex t. 505, Univ Paris-Sud, 91405 Orsay Cedex (France); Guerout, R. [Laboratoire Kastler-Brossel, CNRS, ENS, Univ Pierre et Marie Curie case 74, Campus Jussieu, F-75252 Paris Cedex 05 (France)

2011-08-14T23:59:59.000Z

215

Structure of the Alkali-metal-atom-Strontium molecular ions: towards photoassociation and formation of cold molecular ions  

E-Print Network (OSTI)

The potential energy curves, permanent and transition dipole moments, and the static dipolar polarizability, of molecular ions composed of one alkali-metal atom and a Strontium ion are determined with a quantum chemistry approach. The molecular ions are treated as effective two-electron systems and are treated using effective core potentials including core polarization, large gaussian basis sets, and full configuration interaction. In the perspective of upcoming experiments aiming at merging cold atom and cold ion traps, possible paths for radiative charge exchange, photoassociation of a cold Lithium or Rubidium atom and a Strontium ion are discussed, as well as the formation of stable molecular ions.

Aymar, Mireille; Dulieu, Olivier

2011-01-01T23:59:59.000Z

216

Physical origin of chemical trends in glass formation in alkali tellurites: Reconciliation of constraint theory with experiments  

Science Journals Connector (OSTI)

A chemical trend in glass formation with alkali atom (Li, Na, K) in tellurite glasses is recognized, whose physical origin is revealed by a recently formulated approach to the constraint theory of glasses [Phys. Rev. B 60, 11 859 (1999)]. In this work, the parameters appearing in the constraint theory are directly related to quantities derived from atomic structure studies, which facilitates the understanding of glass formation in ionic glasses. As a corollary, the issue of coordination number that has to be considered in the theory, and which has been debated in the literature, is clarified.

R. Aravinda Narayanan

2001-09-11T23:59:59.000Z

217

Effect of Alkali and Alkaline Earth Metallic Species on Biochar Reactivity and Syngas Compositions during Steam Gasification  

Science Journals Connector (OSTI)

Effect of Alkali and Alkaline Earth Metallic Species on Biochar Reactivity and Syngas Compositions during Steam Gasification ... Briefly, a biomass or biochar sample, held in a platinum (Pt) crucible, was ashed in air following a specially designed ashing program that raised the temperature to a final temperature of 600 C at a very slow heating rate in order to prevent the ignition of the biomass/biochar hence to avoid the loss of AAEM species from the sample during oxidation. ... Therefore, wood may be a good fuel based on the consideration that this would potentially reduce the ash-related operation problems in a gasifier. ...

Kongvui Yip; Fujun Tian; Jun-ichiro Hayashi; Hongwei Wu

2009-07-24T23:59:59.000Z

218

Soranakom, C., Bakhshi M. , and Mobasher, B. " Role of Alkali Resistant Glass Fibers in Suppression of Restrained Shrinkage Cracking of Concrete Materials," 15th International Glass Fibre Reinforced Concrete Association  

E-Print Network (OSTI)

Soranakom, C., Bakhshi M. , and Mobasher, B. " Role of Alkali Resistant Glass Fibers in Suppression of Restrained Shrinkage Cracking of Concrete Materials," 15th International Glass Fibre Reinforced Concrete Association Congress, GRC 2008, CD-Proceedings, Prague, April 20-23, 2008. 1 Role of Alkali Resistant Glass

Mobasher, Barzin

219

Monte Carlo simulations of electron thermalization in alkali iodide and alkaline-earth fluoride scintillators  

SciTech Connect

A Monte Carlo model of electron thermalization in inorganic scintillators, which was developed and applied to CsI in a previous publication [Wang et al., J. Appl. Phys. 110, 064903 (2011)], is extended to another material of the alkali halide class, NaI, and to two materials from the alkaline-earth halide class, CaF{sub 2} and BaF{sub 2}. This model includes electron scattering with both longitudinal optical (LO) and acoustic phonons as well as the effects of internal electric fields. For the four pure materials, a significant fraction of the electrons recombine with self-trapped holes and the thermalization distance distributions of the electrons that do not recombine peak between approximately 25 and 50 nm and extend up to a few hundreds of nanometers. The thermalization time distributions of CaF{sub 2}, BaF{sub 2}, NaI, and CsI extend to approximately 0.5, 1, 2, and 7 ps, respectively. The simulations show that the LO phonon energy is a key factor that affects the electron thermalization process. Indeed, the higher the LO phonon energy is, the shorter the thermalization time and distance are. The thermalization time and distance distributions show no dependence on the incident {gamma}-ray energy. The four materials also show different extents of electron-hole pair recombination due mostly to differences in their electron mean free paths (MFPs), LO phonon energies, initial densities of electron-hole pairs, and static dielectric constants. The effect of thallium doping is also investigated for CsI and NaI as these materials are often doped with activators. Comparison between CsI and NaI shows that both the larger size of Cs{sup +} relative to Na{sup +}, i.e., the greater atomic density of NaI, and the longer electron mean free path in NaI compared to CsI contribute to an increased probability for electron trapping at Tl sites in NaI versus CsI.

Wang Zhiguo; Gao Fei; Kerisit, Sebastien [Fundamental and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99352 (United States); Xie Yulong [Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, Washington 99352 (United States); Campbell, Luke W. [National Security Directorate, Pacific Northwest National Laboratory, Richland, Washington 99352 (United States)

2012-07-01T23:59:59.000Z

220

Monte Carlo simulations of electron thermalization in alkali iodide and alkaline-earth fluoride scintillators  

SciTech Connect

A Monte Carlo model of electron thermalization in inorganic scintillators, which was developed and applied to CsI in a previous publication [Wang et al., J. Appl. Phys. 110, 064903 (2011)], is extended to another material of the alkali halide class, NaI, and to two materials from the alkaline-earth halide class, CaF2 and BaF2. This model includes electron scattering with both longitudinal optical (LO) and acoustic phonons as well as the effects of internal electric fields. For the four pure materials, a significant fraction of the electrons recombine with self-trapped holes and the thermalization distance distributions of the electrons that do not recombine peak between approximately 25 and 50 {per_thousand}nm and extend up to a few hundreds of nanometers. The thermalization time distributions of CaF2, BaF2, NaI, and CsI extend to approximately 0.5, 1, 2, and 7 ps, respectively. The simulations show that the LO phonon energy is a key factor that affects the electron thermalization process. Indeed, the higher the LO phonon energy is, the shorter the thermalization time and distance are. The thermalization time and distance distributions show no dependence on the incident {gamma}-ray energy. The four materials also show different extents of electron-hole pair recombination due mostly to differences in their electron mean free paths (MFPs), LO phonon energies, initial densities of electron-hole pairs, and static dielectric constants. The effect of thallium doping is also investigated for CsI and NaI as these materials are often doped with activators. Comparison between CsI and NaI shows that both the larger size of Cs+ relative to Na+, i.e., the greater atomic density of NaI, and the longer electron mean free path in NaI compared to CsI contribute to an increased probability for electron trapping at Tl sites in NaI versus CsI.

Wang, Zhiguo; Xie, YuLong; Campbell, Luke W.; Gao, Fei; Kerisit, Sebastien N.

2012-07-01T23:59:59.000Z

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


221

Compliant alkali silicate sealing glass for solid oxide fuel cell applications: thermal cycle stability and chemical compatibility  

SciTech Connect

An alkali silicate glass (SCN-1) is currently being evaluated as a candidate sealing glass for solid oxide fuel (SOFC) applications. The glass containing ~17 mole% alkalis (K2O and Na2O) remains vitreous and compliant during SOFC operation, unlike conventional SOFC sealing glasses, which experience substantial devitrification after the sealing process. The non-crystallizing compliant sealing glass has lower glass transition and softening temperatures since the microstructure remains glassy without significant crystallite formation, and hence can relieve or reduce residual stresses and also has the potential for crack healing. Sealing approaches based on compliant glass will also need to satisfy all the mechanical, thermal, chemical, physical, and electrical requirements for SOFC applications, not only in bulk properties but also at sealing interfaces. In this first of a series of papers we will report the thermal cycle stability of the glass when sealed between two SOFC components, i.e., a NiO/YSZ anode supported YSZ bilayer and a coated ferritic stainless steel interconnect material. High temperature leak rates were monitored versus thermal cycles between 700-850oC using back pressures ranging from 0.2 psi to 1.0 psi. Isothermal stability was also evaluated in a dual environment consisting of flowing dilute H2 fuel versus ambient air. In addition, chemical compatibility at the alumina and YSZ interfaces was examined with scanning electron microscopy and energy dispersive spectroscopy. The results shed new light on the topic of SOFC glass seal development.

Chou, Y. S.; Thomsen, Edwin C.; Williams, Riley T.; Choi, Jung-Pyung; Canfield, Nathan L.; Bonnett, Jeff F.; Stevenson, Jeffry W.; Shyam, Amit; Lara-Curzio, E.

2011-03-01T23:59:59.000Z

222

Swellings due to alkali-silica reaction and delayed ettringite formation: Characterisation of expansion isotropy and effect of moisture conditions  

Science Journals Connector (OSTI)

This paper investigates the effect of different conditions on the development of concrete expansions due to alkali-silica reaction (ASR), delayed ettringite formation (DEF) and their combination. The presence of products of the two reactions has been observed during structure diagnosis. The aim of this research is to study the two reactions in concretes with close mix designs but with various types of aggregate and moisture conditions. Measurements performed in the three directions of stress-free specimens showed that DEF expansions could be considered as isotropic for stress-free material. DEF expansions were largely influenced by the storage conditions (immersed in water or in sealed conditions). The volume of storage water modified the kinetics. Under sealed conditions, no expansions were measured for mortar containing non-reactive aggregate, while small positive strains were obtained for mortar containing reactive aggregate. In all cases, new water supply caused fast, large expansions. The different effects of alkali leaching and moisture conditions on DEF and ASR expansions are discussed.

Hassina Bouzabata; Stphane Multon; Alain Sellier; Hacne Houari

2012-01-01T23:59:59.000Z

223

Theoretical simulations of protective thin film Fabry-Prot filters for integrated optical elements of diode pumped alkali lasers (DPAL)  

SciTech Connect

The lifetime of Diode-Pumped Alkali Lasers (DPALs) is limited by damage initiated by reaction of the glass envelope of its gain medium with rubidium vapor. Rubidium is absorbed into the glass and the rubidium cations diffuse through the glass structure, breaking bridging Si-O bonds. A damage-resistant thin film was developed enhancing high-optical transmission at natural rubidium resonance input and output laser beam wavelengths of 780 nm and 795 nm, while protecting the optical windows of the gain cell in a DPAL. The methodology developed here can be readily modified for simulation of expected transmission performance at input pump and output laser wavelengths using different combination of thin film materials in a DPAL. High coupling efficiency of the light through the gas cell was accomplished by matching the air-glass and glass-gas interfaces at the appropriate wavelengths using a dielectric stack of high and low index of refraction materials selected to work at the laser energies and protected from the alkali metal vapor in the gain cell. Thin films as oxides of aluminum, zirconium, tantalum, and silicon were selected allowing the creation of Fabry-Perot optical filters on the optical windows achieving close to 100% laser transmission in a solid optic combination of window and highly reflective mirror. This approach allows for the development of a new whole solid optic laser.

Quarrie, L., E-mail: Lindsay.Quarrie@l-3com.com, E-mail: lindsay.o.quarrie@gmail.com [New Mexico Institute of Mining and Technology, Department of Materials Engineering, 801 LeRoy Place, Socorro, NM 87801 (United States); Air Force Research Laboratory, AFRL/RDLC Laser CoE, 3550 Aberdeen Avenue SE, Kirtland AFB, NM 87117-5776 (United States)

2014-09-15T23:59:59.000Z

224

Solubility of grossular, Ca3Al2Si3O12, in H2ONaCl solutions at 800 C and 10 kbar, and the stability of garnet in  

E-Print Network (OSTI)

Solubility of grossular, Ca3Al2Si3O12, in H2O­NaCl solutions at 800 °C and 10 kbar, and the stability of garnet in the system CaSiO3­Al2O3­H2O­NaCl Robert C. Newton, Craig E. Manning * Department of Earth and Space Sciences, University of California Los Angeles, Los Angeles, CA 90095-1567, USA Received

Manning, Craig

225

Improved Recovery Boiler Performance Through Control of Combustion, Sulfur, and Alkali Chemistry  

SciTech Connect

This project involved the following objectives: 1. Determine black liquor drying and devolatilization elemental and total mass release rates and yields. 2. Develop a public domain physical/chemical kinetic model of black liquor drop combustion, including new information on drying and devolatilization. 3. Determine mechanisms and rates of sulfur scavenging in recover boilers. 4. Develop non-ideal, public-domain thermochemistry models for alkali salts appropriate for recovery boilers 5. Develop data and a one-dimensional model of a char bed in a recovery boiler. 6. Implement all of the above in comprehensive combustion code and validate effects on boiler performance. 7. Perform gasification modeling in support of INEL and commercial customers. The major accomplishments of this project corresponding to these objectives are as follows: 1. Original data for black liquor and biomass data demonstrate dependencies of particle reactions on particle size, liquor type, gas temperature, and gas composition. A comprehensive particle submodel and corresponding data developed during this project predicts particle drying (including both free and chemisorbed moisture), devolatilization, heterogeneous char oxidation, char-smelt reactions, and smelt oxidation. Data and model predictions agree, without adjustment of parameters, within their respective errors. The work performed under these tasks substantially exceeded the original objectives. 2. A separate model for sulfur scavenging and fume formation in a recovery boiler demonstrated strong dependence on both in-boiler mixing and chemistry. In particular, accurate fume particle size predictions, as determined from both laboratory and field measurements, depend on gas mixing effects in the boilers that lead to substantial particle agglomeration. Sulfur scavenging was quantitatively predicted while particle size required one empirical mixing factor to match data. 3. Condensed-phase thermochemistry algorithms were developed for salt mixtures and compared with sodium-based binary and higher order systems. Predictions and measurements were demonstrated for both salt systems and for some more complex silicate-bearing systems, substantially exceeding the original scope of this work. 4. A multi-dimensional model of char bed reactivity developed under this project demonstrated that essentially all reactions in char beds occur on or near the surface, with the internal portions of the bed being essentially inert. The model predicted composition, temperature, and velocity profiles in the bed and showed that air jet penetration is limited to the immediate vicinity of the char bed, with minimal impact on most of the bed. The modeling efforts substantially exceeded the original scope of this project. 5. Near the completion of this project, DOE withdrew the BYU portion of a multiparty agreement to complete this and additional work with no advanced warning, which compromised the integration of all of this material into a commercial computer code. However, substantial computer simulations of much of this work were initiated, but not completed. 6. The gasification modeling is nearly completed but was aborted near its completion according to a DOE redirection of funds. This affected both this and the previous tasks.

Baxter, Larry L.

2008-06-09T23:59:59.000Z

226

Evaluation of laboratory test method for determining the potential alkali contribution from aggregate and the ASR safety of the Three-Gorges dam concrete  

SciTech Connect

The releasable alkali from granite, which was used in the Three-Gorges concrete dam project in China, and from gneiss and feldspar was estimated by extraction in distilled water and super-saturated Ca(OH){sub 2} solution. Results show that: i) the finer the particles and the higher the temperature, the greater and faster the release of alkali; ii) compared with extraction by distilled water, super-saturated Ca(OH){sub 2} solution had a stronger activation on feldspar than on granite and gneiss; iii) for the three rocks tested, thermal activation had the largest effect on gneiss and a lower and similar effect on granite and feldspar. For very fine particles, temperature had a similar effect on the release of alkali by all three rocks. Because the aggregate used in the Three-Gorges dam concrete is non-reactive and a low calcium fly ash was used in the concrete, ASR would not be an issue for the dam, despite the release of alkali from the aggregate into the concrete.

Lu Duyou [College of Materials Science and Engineering, Nanjing University of Technology, No. 5 Xin Mafan Road, Nanjing, Jiangsu, 210009 (China)]. E-mail: duyoulu@njut.edu.cn; Zhou, Xiaoling [College of Materials Science and Engineering, Nanjing University of Technology, No. 5 Xin Mafan Road, Nanjing, Jiangsu, 210009 (China); Xu Zhongzi [College of Materials Science and Engineering, Nanjing University of Technology, No. 5 Xin Mafan Road, Nanjing, Jiangsu, 210009 (China); Lan Xianghui [College of Materials Science and Engineering, Nanjing University of Technology, No. 5 Xin Mafan Road, Nanjing, Jiangsu, 210009 (China); Tang Mingshu [College of Materials Science and Engineering, Nanjing University of Technology, No. 5 Xin Mafan Road, Nanjing, Jiangsu, 210009 (China); Fournier, Benoit [ICON/CANMET, Natural Resources Canada, 405 Rocherster Street, Ottawa, ON, K1A 0G1 (Canada)

2006-06-15T23:59:59.000Z

227

Improved thermoelectric performance in polycrystalline p -type Bi 2 Te 3 via an alkali metal salt hydrothermal nanocoating treatment approach  

Science Journals Connector (OSTI)

We report herein a proof-of-principle study of grain boundary engineering in the polycrystalline p -type Bi 2 Te 3 system. Utilizing the recently developed hydrothermal nanocoating treatment technique we fabricated an alkali-metal(s)-containing surface layer on the p -Bi 2 Te 3 bulk grain which in turn became part of the grain boundary upon hot pressing densification. Compared to the untreated bulk reference the dimensionless figure of merit Z T has been improved by ? 30 % in the Na-treated sample chiefly due to the reduced thermal conductivity and ? 38 % in the Rb-treated sample mainly owing to the improved power factor. The grain boundary phase provides a new avenue by which one can potentially decouple the otherwise inter-related electrical resistivity Seebeck coefficient and thermal conductivity within one thermoelectric material.

Xiaohua Ji; Jian He; Zhe Su; Nick Gothard; Terry M. Tritt

2008-01-01T23:59:59.000Z

228

Methanol synthesis using a catalyst combination of alkali or alkaline earth salts and reduced copper chromite for methanol synthesis  

DOE Patents (OSTI)

The present invention relates to a novel route for the synthesis of methanol, and more specifically to the production of methanol by contacting synthesis gas under relatively mild conditions in a slurry phase with a catalyst combination comprising reduced copper chromite and basic alkali salts or alkaline earth salts. The present invention allows the synthesis of methanol to occur in the temperature range of approximately 100.degree.-160.degree. C. and the pressure range of 40-65 atm. The process produces methanol with up to 90% syngas conversion per pass and up to 95% methanol selectivity. The only major by-product is a small amount of easily separated methyl formate. Very small amounts of water, carbon dioxide and dimethyl ether are also produced. The present catalyst combination also is capable of tolerating fluctuations in the H.sub.2 /CO ratio without major deleterious effect on the reaction rate. Furthermore, carbon dioxide and water are also tolerated without substantial catalyst deactivation.

Tierney, John W. (Pittsburgh, PA); Wender, Irving (Pittsburgh, PA); Palekar, Vishwesh M. (Pittsburgh, PA)

1993-01-01T23:59:59.000Z

229

Effect of Acid, Alkali, and Steam Explosion Pretreatments on Characteristics of Bio-Oil Produced from Pinewood  

SciTech Connect

Bio-oil produced from pinewood by fast pyrolysis has the potential to be a valuable substitute for fossil fuels. Pretreatment prior to the fast pyrolysis process has been shown to alter the structure and chemical composition of biomass. To determine the influence of biomass pretreatments on bio-oil produced during fast pyrolysis, we tested three pretreatment methods: dilute acid, dilute alkali, and steam explosion. Bio-oils were produced from untreated and pretreated pinewood feedstocks in an auger reactor at 450 C. The bio-oils?¢???? physical properties including pH, water content, acid value, density, viscosity, and heating value were measured. Chemical characteristics of the bio-oils were determined by gas chromatographymass spectrometry. Results showed that bio-oil yield and composition were influenced by biomass pretreatment. Of the three pretreatment methods, 1%H2SO4 pretreatment resulted in the highest bio-oil yield and best bio-oil quality.

Wang, Hui; Srinivasan, Radhakrishnan; Yu, Fei; Steele, Philip; Li, Qi; Mitchell, Brian

2011-06-21T23:59:59.000Z

230

Alkali injection system with controlled CO.sub.2 /O.sub.2 ratios for combustion of coal  

DOE Patents (OSTI)

A high temperature combustion process for an organic fuel containing sulfur n which the nitrogen of air is replaced by carbon dioxide for combination with oxygen with the ratio of CO.sub.2 /O.sub.2 being controlled to generate combustion temperatures above 2000 K. for a gas-gas reaction with SO.sub.2 and an alkali metal compound to produce a sulfate and in which a portion of the carbon-dioxide rich gas is recycled for mixing with oxygen and/or for injection as a cooling gas upstream from heating exchangers to limit fouling of the exchangers, with the remaining carbon-dioxide rich gas being available as a source of CO.sub.2 for oil recovery and other purposes.

Berry, Gregory F. (Naperville, IL)

1988-01-01T23:59:59.000Z

231

Studies on the production of ultra-clean coal by alkali-acid leaching of low-grade coals  

SciTech Connect

The use of low-grade coal in thermal power stations is leading to environmental pollution due to the generation of large amounts of fly ash, bottom ash, and CO{sub 2} besides other pollutants. It is therefore important to clean the coal before using it in thermal power stations, steel plants, or cement industries etc. Physical beneficiation of coal results in only limited cleaning of coal. The increasing environmental pollution problems from the use of coal have led to the development of clean coal technologies. In fact, the clean use of coal requires the cleaning of coal to ultra low ash contents, keeping environmental norms and problems in view and the ever-growing need to increase the efficiency of coal-based power generation. Therefore this requires the adaptation of chemical cleaning techniques for cleaning the coal to obtain ultra clean coal having ultra low ash contents. Presently the reaction conditions for chemical demineralization of low-grade coal using 20% aq NaOH treatment followed by 10% H{sub 2}SO{sub 4} leaching under reflux conditions have been optimized. In order to reduce the concentration of alkali and acid used in this process of chemical demineralization of low-grade coals, stepwise, i.e., three step process of chemical demineralization of coal using 1% or 5% aq NaOH treatment followed by 1% or 5% H{sub 2}SO{sub 4} leaching has been developed, which has shown good results in demineralization of low-grade coals. In order to conserve energy, the alkali-acid leaching of coal was also carried out at room temperature, which gave good results.

Nabeel, A.; Khan, T.A.; Sharma, D.K. [Jamia Millia Islamia, New Delhi (India). Dept. of Chemistry

2009-07-01T23:59:59.000Z

232

Apparatus for the detection and removal of vapor phase alkali species from coal-derived gases at high temperature and pressure  

Science Journals Connector (OSTI)

A high-pressure high-temperature apparatus has been developed for the analysis of sorbents capable of removing alkali compounds to the concentration levels required by advanced coal-fired power generating systems. The reactor is capable of operating at temperatures up to 1200? C and pressures up to 2.0 MPa. A laser-based techniquephotofragment fluorescenceenables in situ analysis of the sodium content in a gas stream before and after a sorbent bed thereby determining the efficiency of the alkali removal by the various sorbents studied (typically alumino-silicate clays). The design and development of both the reactor and the laser-based analytical technique is described.

P. G. Griffin; R. J. S. Morrison; A. Campisi; B. L. Chadwick

1998-01-01T23:59:59.000Z

233

Subsidiary-absorption spin-wave-instability processes in yttrium iron garnet thin films: Coupled lateral standing modes, critical modes, and the kink effect  

Science Journals Connector (OSTI)

Subsidiary-absorption butterfly curves of the spin-wave-instability threshold microwave-field-amplitude versus static field H, for an in-plane magnetized 1.1 mm 2.0 mm, 7-?m-thick yttrium iron garnet film rectangle at 9.4 GHz, and with the linearly polarized microwave field perpendicular to the static field H and also in-plane, are found to show significant changes when H is changed from along the long edge to along the short edge of the rectangle. This effect is explained by a theory for the first-order spin-wave-instability threshold in magnetic films, which takes into acocunt the coupled standing spin-wave modes across the lateral dimensions of the film. This theory is a modification of a previous theory, which considered the standing modes across the film cross section only. The theory is able to reproduce the orientation effect found experimentally and give good fits to the butterfly-curve data. In contrast with previous results, it is not necessary to introduce ad hoc spin-wave angle ?K terms into the spin-wave linewidth to obtain these fits. The theory also yields critical-mode wave numbers in the kink region which are in the 5104 cm-1 range, which agree with previous fine-structure and Brillouin light-scattering measurements. A key parameter in the analysis is a mode spacing parameter ??K, which contains a factor of the form sin(2?K)/K, where K is the mode wave number and ?K is the mode in-plane angle relative to H. These dependences are the key to the match with experiment. They are also general, and not limited to the thin-film geometry.

G. Wiese; P. Kabos; C. E. Patton

1995-06-01T23:59:59.000Z

234

Testing of candidate materials for their resistance to alkali-vapor adsorption in PFBC and gasification environments. Final report  

SciTech Connect

Laboratory-scale studies were performed to identify metallic material(s) having no, or limited, affinity for alkali vapors in an environment of either the off-gas from pressurized fluidized-bed combustion (PFBC) or the fuel gas from coal gasification. Such materials would be potential candidates for use as components in advanced coal-utilization systems. The following materials were tested for adsorption of NaCl vapor at 870--875 C and atmospheric pressure in a simulated PFBC off-gas (oxidizing) doped with 80 ppmW NaCl vapor: iron-based Type 304 stainless steel (304 SS), nickel-based Hastelloy C-276 and Hastelloy X alloys, cobalt-based Haynes No. 188 alloy, noble-metal-coated 304 SS, aluminized 304 SS, and ZrO{sub 2}-coated 304 SS. The Haynes No. 188 alloy and the aluminized 304 SS were also tested for their NaCl-vapor adsorption in a simulated gasification fuel gas (reducing) under the same test conditions as in the PFBC off-gas test. After 100 h of testing, the specimens were analyzed with a SEM equipped with an energy dispersive X-ray analyzer, and by an AES. The aluminized 304 SS had the least tendency to adsorb NaCl vapor, as well as an excellent resistance to corrosion as a result of the formation of a protective layer of Al{sub 2}O{sub 3} on its surface. In the reducing environment, however, the aluminized 304 SS was badly corroded by H{sub 2}S attack. The Haynes No. 188 showed virtually no NaCl-vapor adsorption and only limited H{sub 2}S attack. The authors recommend further long-term parametric studies to quantitate alkali-vapor adsorption as a function of operating variables for (1) the aluminized 304 SS in the PFBC off-gas environment and (2) the Haynes No. 188 in the gasification fuel gas environment.

Lee, S.H.D.; Natesan, K.; Swift, W.M.

1995-08-01T23:59:59.000Z

235

The Filter Dichotomy and medial limits Paul B. Larson*  

E-Print Network (OSTI)

measurable function from P(!) to the unit interval [0, 1] which is finitely additive for disjoint sets that there are no medial limits. 2000 Mathematics Subject Classification 03E35; 28A20 1 Universally measurable sets A measure on a set X is a function ~ whose domain is some oe-algebra of subsets of X, with codomain [0, 1

Larson, Paul B.

236

Theoretical Aspects of Star Formation Richard B. Larson  

E-Print Network (OSTI)

astrophysical processes: not only do the properties of stellar systems of all types depend on how their stars involved are just too numerous and too complex: star formation depends on many processes and many variables, all interrelated in complex ways that make the subject difficult to treat in a deterministic way

Larson, Richard B.

237

Waste to energy by industrially integrated supercritical water gasification Effects of alkali salts in residual by-products from the pulp and paper industry  

Science Journals Connector (OSTI)

Supercritical water gasification (SCWG) is a method by which biomass can be converted intoa hydrogen-rich gas product. Wet industrial waste streams, which contain both organic and inorganic material, are well suited for treatment by SCWG. In this study, the gasification of two streams of biomass resulting from the pulp and paper industry, black liquor and paper sludge, has been investigated. The purpose is to convert these to useful products, both gaseous and solids, which can be used either in the papermaking process or in external applications. Simple compounds, such as glucose, have been fully gasified in SCWG, but gasification of more complex compounds, such as biomass and waste, have not reached as high conversions. The investigated paper sludge was not easily gasified. Improving gasification results with catalysts is an option and the use of alkali salts for this purpose was studied. The relationship between alkali concentration, temperature, and gasification yields was studied with the addition of KOH, K2CO3, NaOH and black liquor to the paper sludge. Addition of black liquor to the paper sludge resulted in similarly enhancing effects as when the alkali salts were added, which made it possible to raise the dry matter content and gasification yield without expensive additives.

I. Rnnlund; L. Myren; K. Lundqvist; J. Ahlbeck; T. Westerlund

2011-01-01T23:59:59.000Z

238

Compliant alkali silicate sealing glass for solid oxide fuel cell applications: the effect of protective alumina coating on electrical stability in dual environment  

SciTech Connect

An alkali-containing silicate glass was recently proposed as a potential sealant for solid oxide fuel cells (SOFC). The glass contains appreciable amount of alkalis and retains its glassy microstructure at elevated temperatures over time. It is more compliant as compared to conventional glass-ceramics sealants and could potentially heal cracks during thermal cycling. In previous papers the thermal cycle stability, thermal stability and chemical compatibility were reported with yttria-stabilized zirconia (YSZ) electrolyte and YSZ-coated ferritic stainless steel interconnect. In this paper, we report the electrical stability of the compliant glass with aluminized AISI441 interconnect material under DC load in dual environment at 700-800oC. Apparent electrical resistivity was measured with a 4-point method for the glass sealed between two aluminized AISI441 metal coupons as well as plain AISI441 substrates. The results showed good electrical stability with the aluminized AISI441 substrate, while unstable behavior was observed for un-coated substrates. In addition, interfacial microstructure was examined with scanning electron microscopy and correlated with the measured resistivity results. Overall, the alumina coating demonstrated good chemical stability with the alkali-containing silicate sealing glass under DC loading.

Chou, Y. S.; Choi, Jung-Pyung; Stevenson, Jeffry W.

2012-12-01T23:59:59.000Z

239

Universal scaling of potential energy functions describing intermolecular interactions. II. The halide-water and alkali metal-water interactions  

SciTech Connect

The scaled forms of the newly introduced generalized potential energy functions (PEFs) describing intermolecular interactions [J. Chem. Phys. xx, yyyyy (2011)] have been used to fit the ab-initio minimum energy paths (MEPs) for the halide- and alkali metal-water systems X-(H2O), X=F, Cl, Br, I, and M+(H2O), M=Li, Na, K, Rb, Cs. These generalized forms produce fits to the ab-initio data that are between one and two orders of magnitude better in the ?2 than the original forms of the PEFs. They were found to describe both the long-range, minimum and repulsive wall of the potential energy surface quite well. Overall the 4-parameter extended Morse (eM) and generalized Buckingham exponential-6 (gB-e6) potentials were found to best fit the ab-initio data. Furthermore, a single set of parameters of the reduced form was found to describe all candidates within each class of interactions. The fact that in reduced coordinates a whole class of interactions can be represented by a single PEF, yields the simple relationship between the molecular parameters associated with energy (well depth, ?), structure (equilibrium distance, rm) and spectroscopy (anharmonic frequency, ?):? = A? (? /?)1/ 2 /rm + B?? /rm 3 , where A and B are constants depending on the underlying PEF. This more general case of Badgers rule has been validated using the experimentally measured frequencies of the hydrogen bonded OH stretching vibrations in the halide-water series.

Werhahn, Jasper C.; Akase, Dai; Xantheas, Sotiris S.

2014-08-14T23:59:59.000Z

240

Alkali metal Rankine cycle boiler technology challenges and some potential solutions for space nuclear power and propulsion applications  

SciTech Connect

Alkali metal boilers are of interest for application to future space Rankine cycle power conversion systems. Significant progress on such boilers was accomplished in the 1960's and early 1970's, but development was not continued to operational systems since NASA's plans for future space missions were drastically curtailed in the early 1970's. In particular, piloted Mars missions were indefinitely deferred. With the announcement of the Space Exploration Initiative (SEI) in July 1989 by President Bush, interest was rekindled in challenging space missions and, consequently in space nuclear power and propulsion. Nuclear electric propulsion (NEP) and nuclear thermal propulsion (NTP) were proposed for interplanetary space vehicles, particularly for Mars missions. The potassium Rankine power conversion cycle became of interest to provide electric power for NEP vehicles and for 'dual-mode' NTP vehicles, where the same reactor could be used directly for propulsion and (with an additional coolant loop) for power. Although the boiler is not a major contributor to system mass, it is of critical importance because of its interaction with the rest of the power conversion system; it can cause problems for other components such as excess liquid droplets entering the turbine, thereby reducing its life, or more critically, it can drive instabilities-some severe enough to cause system failure. Funding for the SEI and its associated technology program from 1990 to 1993 was not sufficient to support significant new work on Rankine cycle boilers for space applications. In Fiscal Year 1994, funding for these challenging missions and technologies has again been curtailed, and planning for the future is very uncertain. The purpose of this paper is to review the technologies developed in the 1960's and 1970's in the light of the recent SEI applications. In this way, future Rankine cycle boiler programs may be conducted most efficiently.

Stone, J.R.

1994-07-01T23:59:59.000Z

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


241

Structures of disordered alkali chlorides in normal and compressed states: An isothermal-isobaric molecular-dynamics study  

Science Journals Connector (OSTI)

Isothermal-isobaric molecular-dynamics simulations have been performed to investigate the glassy and liquid structures of two alkali chloride systems [mixture (LiCl)0.50(KCl)0.40(CsCl)0.10 and pure LiCl]. With the use of an ionic interaction model, the basic thermodynamic properties of the crystalline, liquid, and glassy states are successfully reproduced in the simulations. At normal pressure (101.3 MPa), it is found that the predominant short-range order in both systems is the LiCl4 tetrahedral units, each pair of which is mutually connected by sharing not only the vertices but also the edges of the tetrahedra. In the glassy and liquid states of LiCl-KCl-CsCl, the network structure is formed by polytetrahedral medium-range order (LiLi4) consisting of five connected LiCl4 tetrahedra. Some portions of this network are truncated by the K+ and Cs+ ions adjacent to the vertex Cl- ions. On the other hand, liquid and glassy LiCl has a disordered structure approximately analogous to zinc-blende structure, also including the wurtzitelike ionic arrangement. For LiCl in the amorphous and crystalline states, we performed isothermal-compression simulations up to 30 GPa. As in the experimental findings, no structural transformation occurs for the rocksalt LiCl crystal. The compression causes the crystallization of amorphous LiCl into rocksalt structure at more than 310 GPa with continuous structural change. This structural transformation is analogous to the pressure-induced polymorphic transition (zinc blende?rocksalt) that occurs in the crystals of more covalent compounds such as CdS.

Kenichi Kinugawa

1993-10-01T23:59:59.000Z

242

Origin of improved scintillation efficiency in (Lu,Gd){sub 3}(Ga,Al){sub 5}O{sub 12}:Ce multicomponent garnets: An X-ray absorption near edge spectroscopy study  

SciTech Connect

In the recent successful improvement of scintillation efficiency in Lu{sub 3}Al{sub 5}O{sub 12}:Ce driven by Ga{sup 3+} and Gd{sup 3+} admixture, the band-gap engineering and energy level positioning have been considered the valid strategies so far. This study revealed that this improvement was also associated with the cerium valence instability along with the changes of chemical composition. By utilizing X-ray absorption near edge spectroscopy technique, tuning the Ce{sup 3+}/Ce{sup 4+} ratio by Ga{sup 3+} admixture was evidenced, while it was kept nearly stable with the Gd{sup 3+} admixture. Ce valence instability and Ce{sup 3+}/Ce{sup 4+} ratio in multicomponent garnets can be driven by the energy separation between 4f ground state of Ce{sup 3+} and Fermi level.

Wu, Yuntao, E-mail: caswyt@hotmail.com; Luo, Jialiang; Ren, Guohao [Shanghai Institute of Ceramics, Chinese Academy of Sciences, No.215 Road, Jiading, Shanghai 201899 (China); Nikl, Martin [Institute of Physics, Academy of Sciences of the Czech Republic, Cukrovarnick 10, 16253 Prague 6 (Czech Republic)

2014-01-01T23:59:59.000Z

243

UV-vis spectroscopy of iodine adsorbed on alkali-metal-modified zeolite catalysts for addition of carbon dioxide to ethylene oxide  

SciTech Connect

The basicity of alkali-metal-exchange (Na, K, Cs) zeolites X and Y was probed by UV-vis diffuse reflectance spectroscopy of adsorbed iodine. The observed blue shift in the visible absorption spectrum of adsorbed iodine, compared to gaseous iodine, correlated well with the negative charge on the framework oxygen atoms calculated from the Sanderson electronegativity equalization principle. The blue shifts associated with iodine adsorbed on classical catalytic supports like silica, alumina, and magnesia suggest that the iodine adsorption technique for probing basicity is applicable to a wide variety of solids. Iodine was also adsorbed on X and Y zeolites containing occluded cesium oxide formed by decomposition of impregnated cesium acetate. However, the iodine appeared to irreversibly react on these strongly basic samples, possibly forming an adsorbed triiodide ions. As a complement to the adsorption studies, the activity of alkali-metal-containing zeolites for the base-catalyzed formation of ethylene carbonate from ethylene oxide and carbon dioxide was investigated. Among the ion-exchanged zeolites, the cesium form of zeolite X exhibited the highest activity for ethylene carbonate formation. The catalytic activity of a zeolite containing occluded cesium was even higher than that of a cesium-exchanged zeolite. The presence of water adsorbed in zeolite pores promoted the rate of ethylene carbonate formation for both cesium-exchanged and cesium-impregnated zeolite X.

Doskocil, E.J.; Bordawekar, S.V.; Kaye, B.G.; Davis, R.J. [Univ. of Virginia, Charlottesville, VA (United States). Dept. of Chemical Engineering] [Univ. of Virginia, Charlottesville, VA (United States). Dept. of Chemical Engineering

1999-07-29T23:59:59.000Z

244

Compliant alkali silicate sealing glass for solid oxide fuel cell applications: Combined stability in isothermal ageing and thermal cycling with YSZ coated ferritic stainless steels  

SciTech Connect

An alkali-containing silicate glass (SCN-1) is currently being evaluated as a candidate sealing glass for solid oxide fuel cell (SOFC) applications. The glass contains about 17 mole% alkalis (K+Na) and has low glass transition and softening temperatures. It remains vitreous and compliant around 750-800oC after sealing without substantial crystallization, as contrary to conventional glass-ceramic sealants, which experience rapid crystallization after the sealing process. The glassy nature and low characteristic temperatures can reduce residual stresses and result in the potential for crack healing. In a previous study, the glass was found to have good thermal cycle stability and was chemically compatible with YSZ coating during short term testing. In the current study, the compliant glass was further evaluated in a more realistic way in that the sealed glass couples were first isothermally aged for 1000h followed by thermal cycling. High temperature leakage was measured. The chemical compatibility was also investigated with powder mixtures at 700 and 800oC to enhance potential interfacial reaction. In addition, interfacial microstructure was examined with scanning electron microscopy and evaluated with regard to the leakage and chemical compatibility results.

Chou, Y. S.; Thomsen, Edwin C.; Choi, Jung-Pyung; Stevenson, Jeffry W.

2012-01-01T23:59:59.000Z

245

Measurement of the Spin-Orbit Perturbation in the P-State Continuum of Heavy Alkali-Metal Atoms: K, Rb, and Cs  

Science Journals Connector (OSTI)

The spin-orbit interaction for the P-state continuum of heavy alkali metals was investigated in a photoionization experiment using spin-polarized alkali atoms and circularly polarized light. From the asymmetry in ion-counting rates corresponding to the two photon helicities, Fano's spin-orbit perturbation parameter x was determined over a range of several hundred angstroms for K, Rb, and Cs. The spin-orbit perturbation was found to increase from K to Rb to Cs as expected, and the nonlinear behavior of x as a function of the photon energy E was demonstrated for K. Knowledge of x(E) was used to establish accurate values for the position of the Cooper minimum and to estimate the magnitude of the cross section at the minimum. In addition, the x(E) data for Cs were used to gain information about the spin polarization of photoelectrons in a Fano-type polarized electron source. Finally, extrapolation of x(E) for cesium into the discrete spectrum indicated the existence of a pole in the function ?(E) which corresponds to the doublet line-strength ratio ?(EnP)=S(nP32)S(nP12) at the discrete energies EnP. According to our extrapolation, the pole lies in the region of n=10to15, in agreement with the early spectroscopic work of Sambursky (1928) and Beutell (1939), whose measurements were discounted by later investigators.

G. Baum; M. S. Lubell; W. Raith

1972-03-01T23:59:59.000Z

246

Alkali/TX sub 2 catalysts for CO/H sub 2 conversion to C sub 1 -C sub 4 alcohols  

SciTech Connect

The objective of this research is to investigate and develop novel catalysts for the conversion of coal-derived synthesis gas into C{sub 1}--C{sub 4} alcohols by a highly selective process. Therefore, the variations of catalyst activity and selectivity for the synthesis of alcohols from H{sub 2}/CO {le}1 synthesis gas for a series of A/TX{sub 2} compounds, where A is a surface alkali dopant, T is a transition metal, and X is a S, Se, or Te, will be determined. The alkali component A, which is essential for C-O and C-C bond forming reactions leading to alcohols, will be highly dispersed on the TX{sub 2} surfaces by using chemical vapor deposition (CVD) and chemical complexation/anchoring (CCA) methods. Catalysts that have been prepared during this quarter include RuS{sub 2}, NbS{sub 2}, K/MoS{sub 2}, and K/Crown either/MoS{sub 2}. Catalysts tested include KOH/MoS{sub 2} and K/Crown ether/MoS{sub 2}. 9 refs., 10 figs., 2 tabs.

Klier, K.; Herman, R.G.; Brimer, A.; Richards, M.; Kieke, M.; Bastian, R.D.

1990-09-01T23:59:59.000Z

247

Generation of alkali-free and high-proton concentration layer in a soda lime glass using non-contact corona discharge  

SciTech Connect

Formation mechanisms of alkali-free and high-proton concentration surfaces were investigated for a soda lime glass using a corona discharge treatment under an atmospheric pressure. Protons produced by high DC voltage around an anode needle electrode were incorporated into a sodium ion site in the anode side glass. The sodium ion was swept away to the cathode side as a charge carrier. Then it was discharged. The precipitated sodium was transformed to a Na{sub 2}CO{sub 3} powder when the surface contacted with air. The sodium ion in the glass surface layer of the anode side was replaced completely by protons. The concentration of OH groups in the layer was balanced with the amount of excluded sodium ions. The substitution reaction of sodium ions with protons tends to be saturated according to a square root function of time. The alkali depletion layer formation rate was affected by the large difference in mobility between sodium ions and protons in the glass.

Ikeda, Hiroshi; Sakai, Daisuke; Nishii, Junji [Research Institute for Electronic Science, Hokkaido University, N20 W10, Kita-ku, Sapporo, Hokkaido 001-0020 (Japan)] [Research Institute for Electronic Science, Hokkaido University, N20 W10, Kita-ku, Sapporo, Hokkaido 001-0020 (Japan); Funatsu, Shiro [Production Technology Center, Asahi Glass Co., Ltd., 1-1 Suehiro-cyo, Tsurumiku, Yokohama, Kanagawa 230-0045 (Japan)] [Production Technology Center, Asahi Glass Co., Ltd., 1-1 Suehiro-cyo, Tsurumiku, Yokohama, Kanagawa 230-0045 (Japan); Yamamoto, Kiyoshi; Suzuki, Toshio [Research Center, Asahi Glass Co., Ltd., 1150 Hazawa-cho, Kanagawa-ku, Yokohama, Kanagawa 221-8755 (Japan)] [Research Center, Asahi Glass Co., Ltd., 1150 Hazawa-cho, Kanagawa-ku, Yokohama, Kanagawa 221-8755 (Japan); Harada, Kenji [Department of Computer Science, Kitami Institute of Technology, 165 Koen-cho, Kitami, Hokkaido 090-8507 (Japan)] [Department of Computer Science, Kitami Institute of Technology, 165 Koen-cho, Kitami, Hokkaido 090-8507 (Japan)

2013-08-14T23:59:59.000Z

248

Alkali activated aerogels.  

E-Print Network (OSTI)

??Clay aerogels are unique materials formed through the sublimation drying of aluminosilicate clay hydrogels. Aerogels have been an area of increased research interest in the (more)

Svingala, Forrest R.

2009-01-01T23:59:59.000Z

249

New method to minimize high-temperature corrosion resulting from alkali sulfate and chloride deposition in combustion systems. II. molybdenum salts  

SciTech Connect

The use of fuels other than natural gas in gas turbine generators still is fraught with blade corrosion problems that result from the formation of sodium sulfate or potassium sulfate, in the presence of chlorine. The present work illustrates that the addition of molybdenum salts to synthetic fuels (synfuels) modifies this deposition process and benign protective coatings of alkali polymolybdates are produced instead. This study is a follow-up to research published earlier in this journal that showed closely similar behavior with tungsten salt additives. In the case of molybdenum, a new preferential ranking of product formation on the surface is established that is closely related to the thermodynamic stabilities, namely, Na{sub 2}Mo{sub 2}O{sub 7} {gt} Na{sub 2}SO{sub 4} {gt} Na{sub 2}MoO{sub 4} {gt} NaCl and K{sub 2}Mo{sub 4}O{sub 13} {gt} K{sub 2}Mo{sub 3}O{sub 10} {gt} K{sub 2}Mo{sub 2}O{sub 7} {gt} K{sub 2}SO{sub 4} {gt} K{sub 2}MoO{sub 4} {gt} KCl. This chemistry exists under fuel-lean conditions and is otherwise not sensitive to the fuel, combustion conditions, surface temperature, or material. The required additive trace levels of molybdenum salt are on the order of twice that of the gaseous alkali, on an atomic basis. Consequently, when used as a final pre-gas turbine polishing technique and following other fuel precleaning methods, the approach offers a very practical and inexpensive solution. 63 refs., 6 figs., 1 tab.

Keith Schofield [University of California, Santa Barbara, CA (United States). Materials Research Laboratory

2005-10-01T23:59:59.000Z

250

Impact broadening, shifting, and asymmetry of the D1 and D2 lines of alkali-metal atoms colliding with noble-gas atoms  

Science Journals Connector (OSTI)

The Anderson Talman theory of spectral line broadening is used together with potential energy curves calculated at the spin-orbit multi-reference configuration interaction level to compute broadening, shifting, and asymmetry coefficients of the D1 and D2 lines of alkali-metal atoms M, as they collide with noble gas atoms N, where M=K, Rb, and Cs, and N=He, Ne, and Ar. Our calculated coefficients are compared to experimental results for a variety of temperatures. In all cases general agreement is observed for the broadening coefficients, while significant disagreement is observed for the shifting coefficients. We also compare our K+He broadening and shifting results with fully quantum-mechanical calculations that employ the Baranger theory of collisional line broadening, and we compare our results with other semiclassical calculations. As with the comparison to experiment, closer agreement is observed for the broadening coefficients while the shifting coefficients exhibit significant disagreement. We use the natural variation between the difference potentials of the nine M+N pairs to explore the relationship between potential and line shape as determined by Anderson-Talman theory and develop a picture for the mechanism that underlies the general agreement between theoretical and experimental results on the broadening coefficient and the general disagreement on shifting coefficients.

L Blank and David E. Weeks

2014-08-18T23:59:59.000Z

251

Pressure-induced phase transformations in alkali-metal hydrides calculated using an improved linear-muffin-tin-orbitalatomic-sphere-approximation energy scheme  

Science Journals Connector (OSTI)

A scheme for the calculation of total energies from first principles is described which is intermediate between the popular linear muffin-tin-orbital method in the atomic-sphere approximation (LMTO-ASA) and an exact full-potential treatment. The local-density total energy is evaluated accurately for the output charge density from the ASA potential. This method is applied to the study of static structural properties and the pressure-induced phase transformation from B1 (NaCl-structure) to B2 (CsCl-structure) phases for the partially ionic alkaki-metal hydrides NaH and KH and the alkali halide NaCl. Good agreement with experimental transition pressures and volumes is obtained. The series NaH, KH, and NaCl shows the observed strong cation and weak anion dependence. Charge densities and band structures are given at zero and high pressure. Calculated energy-volume curves for LiH show no transition up to 1 Mbar, in agreement with experimental data.

C. O. Rodriguez and M. Methfessel

1992-01-01T23:59:59.000Z

252

Alkali deposits found in biomass boilers: The behavior of inorganic material in biomass-fired power boilers -- Field and laboratory experiences. Volume 2  

SciTech Connect

This report documents the major findings of the Alkali Deposits Investigation, a collaborative effort to understand the causes of unmanageable ash deposits in biomass-fired electric power boilers. Volume 1 of this report provide an overview of the project, with selected highlights. This volume provides more detail and discussion of the data and implications. This document includes six sections. The first, the introduction, provides the motivation, context, and focus for the investigation. The remaining sections discuss fuel properties, bench-scale combustion tests, a framework for considering ash deposition processes, pilot-scale tests of biomass fuels, and field tests in commercially operating biomass power generation stations. Detailed chemical analyses of eleven biomass fuels representing a broad cross-section of commercially available fuels reveal their properties that relate to ash deposition tendencies. The fuels fall into three broad categories: (1) straws and grasses (herbaceous materials); (2) pits, shells, hulls and other agricultural byproducts of a generally ligneous nature; and (3) woods and waste fuels of commercial interest. This report presents a systematic and reasonably detailed analysis of fuel property, operating condition, and boiler design issues that dictate ash deposit formation and property development. The span of investigations from bench-top experiments to commercial operation and observations including both practical illustrations and theoretical background provide a self-consistent and reasonably robust basis to understand the qualitative nature of ash deposit formation in biomass boilers. While there remain many quantitative details to be pursued, this project encapsulates essentially all of the conceptual aspects of the issue. It provides a basis for understanding and potentially resolving the technical and environmental issues associated with ash deposition during biomass combustion. 81 refs., 124 figs., 76 tabs.

Baxter, L.L. [Sandia National Labs., Livermore, CA (United States). Combustion Research Facility; Miles, T.R.; Miles, T.R. Jr. [Miles (Thomas R.), Portland, OR (United States); Jenkins, B.M. [California Univ., Davis, CA (United States); Dayton, D.C.; Milne, T.A. [National Renewable Energy Lab., Golden, CO (United States); Bryers, R.W. [Foster Wheeler Development Corp., Livingston, NJ (United States); Oden, L.L. [Bureau of Mines, Albany, OR (United States). Albany Research Center

1996-03-01T23:59:59.000Z

253

Multi-phase glass-ceramics as a waste form for combined fission products: alkalis, alkaline earths, lanthanides, and transition metals  

SciTech Connect

In this study, multi-phase silicate-based glass-ceramics were investigated as an alternate waste form for immobilizing non-fissionable products from used nuclear fuel. Currently, borosilicate glass is the waste form selected for immobilization of this waste stream, however, the low thermal stability and solubility of MoO{sub 3} in borosilicate glass translates into a maximum waste loading in the range of 15-20 mass%. Glass-ceramics provide the opportunity to target durable crystalline phases, e.g., powellite, oxyapatite, celsian, and pollucite, that will incorporate MoO{sub 3} as well as other waste components such as lanthanides, alkalis, and alkaline earths at levels 2X the solubility limits of a single-phase glass. In addition a glass-ceramic could provide higher thermal stability, depending upon the properties of the crystalline and amorphous phases. Glass-ceramics were successfully synthesized at waste loadings of 42, 45, and 50 mass% with the following glass additives: B{sub 2}O{sub 3}, Al{sub 2}O{sub 3}, CaO and SiO{sub 2} by slow cooling form from a glass melt. Glass-ceramics were characterized in terms of phase assemblage, morphology, and thermal stability. The targeted phases: powellite and oxyapatite were observed in all of the compositions along with a lanthanide borosilicate, and cerianite. Results of this initial investigation of glass-ceramics show promise as a potential waste form to replace single-phase borosilicate glass.

Crum, Jarrod V.; Turo, Laura A.; Riley, Brian J.; Tang, Ming; Kossoy, Anna

2012-04-01T23:59:59.000Z

254

DIVALENT ION EXCHANGE WITH ALKALI  

E-Print Network (OSTI)

Enhanced Oil and Gas Recovery and Improved Drilling Hethods,on Enhanced Oil and Gas Recovery and Im- proved Drilling

Bunge, A.L.

2011-01-01T23:59:59.000Z

255

COMPLETELY RANK-NONINCREASING LINEAR MAPS Don Hadwin and David Larson  

E-Print Network (OSTI)

and completely positive and completely bounded. The theorems of W. Stinespring [12] and Wittstock [14] say

Larson, David R.

256

Linda A. Cohen, At Large, Chair David M. Larson, Congressional District 3,  

E-Print Network (OSTI)

Sciences and Dean of the Medical School R. Timothy Mulcahy, Vice President for Research Kathleen O.S., Manager, Children's Center Carlson, James, M.S.L.S., Assistant Librarian Casey, Charles, D Professor, Biology, Environmental Sciences, and Health Sciences Evans, Amber, Ed.D., Director, Admissions

Amin, S. Massoud

257

Eric D. Larson July 8, 1994 Summary Report on Visit to Cuba  

E-Print Network (OSTI)

electricity production from oil. If biomass-gasifier/gasturbine techn.ologywere used,the electricity potential and atuniversitieswere familiar with CEES work on biomass- gasifier/gasturbine power generationand were very interestedin

258

Penn State Hybrid and Hydrogen Vehicle Research Laboratory The Larson Transportation Institute (LTI)  

E-Print Network (OSTI)

on the internal combustion engine and fossil fuels to "greener" fuel cell and hybrid electric technology: · Vehicle integration and control expertise; · Alternative fuel infrastructure including hydrogen, LNG; · Vehicle test track and dynamometer facilities; · Vehicle fabrication facilities; and · Fuel cell

Lee, Dongwon

259

Substantial enhancement in intrinsic coercivity on M-type strontium hexaferrite through the increase in magneto-crystalline anisotropy by co-doping of group-V and alkali elements  

SciTech Connect

The effect of d{sup 1} impurity doping in Sr-hexaferrite (SrM) on the magnetic anisotropy is investigated. First-principles calculations revealed that group-V elements (V, Nb) are stabilized with co-doping of alkali elements. Na{sup 1+}/K{sup 1+} doping at Sr{sup 2+}-site is found to be critical to form the d{sup 1} impurities at Fe-site. Experimentally, NaV doped SrM shows the intrinsic coercivity of ?5.4 kOe, which is ?300% enhancement compared to undoped SrM and comparable value to LaCo co-doped SrM. Finally, the spin-orbit coupling from non-vanishing angular momentum of d{sup 1} impurity in SrM should be a main factor for such a substantial improvement of intrinsic coercivity.

Ahn, Kyunghan, E-mail: kyunghan.ahn@samsung.com; Ryu, Byungki; Korolev, Dmitry; Jae Kang, Young [Materials R and D Center, Samsung Advanced Institute of Technology, Yongin-si, Gyeonggi-do 446-712 (Korea, Republic of)] [Materials R and D Center, Samsung Advanced Institute of Technology, Yongin-si, Gyeonggi-do 446-712 (Korea, Republic of)

2013-12-09T23:59:59.000Z

260

K{sub 2}NaOsO{sub 5.5} and K{sub 3}NaOs{sub 2}O{sub 9}: The first osmium perovskites containing alkali cations at the 'A' site  

SciTech Connect

K{sub 2}NaOsO{sub 5.5} and K{sub 3}NaOs{sub 2}O{sub 9} were obtained from solid-state reactions of potassium superoxide, sodium peroxide and osmium metal at elevated oxygen pressures. K{sub 2}NaOsO{sub 5.5} crystallizes as an oxygen-deficient cubic double perovskite in space group Fm3{sup Macron }m with a=8.4184(5) A and contains isolated OsO{sub 6} octahedra. K{sub 3}NaOs{sub 2}O{sub 9} crystallizes hexagonally in P6{sub 3}/mmc with a=5.9998(4) A and c=14.3053(14) A. K{sub 3}NaOs{sub 2}O{sub 9} consists of face sharing Os{sub 2}O{sub 9} pairs of octahedra. According to magnetic measurements K{sub 2}NaOsO{sub 5.5} is diamagnetic, whereas K{sub 3}NaOs{sub 2}O{sub 9} displays strong antiferromagnetic coupling (T{sub N}=140 K), indicating enhanced magnetic interactions within the octahedral pair. - Graphical abstract: High oxidation states of Os, obtained by high oxygen pressure synthesis, are accommodated in double and triple perovskite matrices. K{sub 3}NaOs{sub 2}O{sub 9} displays enhanced magnetic interactions. Highlights: Black-Right-Pointing-Pointer New osmates containing highly oxidized Os were obtained by high O{sub 2} pressure synthesis. Black-Right-Pointing-Pointer High oxidation states of Os are accommodated in double and triple perovskite matrices. Black-Right-Pointing-Pointer Both compounds represent the first Os perovskites with an alkali metal at the A site. Black-Right-Pointing-Pointer K{sub 3}NaOs{sub 2}O{sub 9} displays enhanced magnetic interactions within the octahedral pair.

Mogare, Kailash M.; Klein, Wilhelm [Stuttgart, Max-Planck-Institut fuer Festkoerperforschung, Heisenbergstrasse 1, 70569 Stuttgart (Germany); Jansen, Martin, E-mail: M.Jansen@fkf.mpg.de [Stuttgart, Max-Planck-Institut fuer Festkoerperforschung, Heisenbergstrasse 1, 70569 Stuttgart (Germany)

2012-07-15T23:59:59.000Z

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


261

Thermal degradation of cellulose in alkali  

SciTech Connect

Biomass in an alkaline aqueous slurry can be liquefied by heat and pressure. Understanding the mechanisms of biomass liquefaction to improve the efficiency of converting biomass to useful products, particularly chemicals and synthetic fuels is discussed. To study the chemical mechanisms of this process, pure cellulose, the main component of biomass, was liquefied. The 78 cellulose liquefaction products that were identified by gas chromatography/mass spectrometry include polyols, furans, ketones, hydrocarbons, and aromatic compounds. Polyols may be formed by hydrogenolytic cleavage. Furans an cyclic ketones may be cyclization products of dicarbonyl intermediates formed by aldol condensation of small initial degradation products such as acetone and acrolein. Several of these small carbonyl compounds were used as model compounds to test proposed mechanisms for furans and cyclic ketones and obtained products supporting five of the mechanisms. For the best case of 26 cellulose liquefaction experiments, 34% of the initial mass of the cellulose was converted to acetone-soluble oil with a heat of combustion of 14,000 Btu/lb.

Miller, R.K.; Molton, P.M.; Russell, J.A.

1980-12-01T23:59:59.000Z

262

Neutron imaging of alkali metal heat pipes  

SciTech Connect

High-temperature heat pipes are two-phase, capillary driven heat transfer devices capable of passively providing high thermal fluxes. Such a device using a liquid-metal coolant can be used as a solution for successful thermal management on hypersonic flight vehicles. Imaging of the liquid-metal coolant inside will provide valuable information in characterizing the detailed heat and mass transport. Neutron imaging possesses an inherent advantage from the fact that neutrons penetrate the heat pipe metal walls with very little attenuation, but are significantly attenuated by the liquid metal contained inside. Using the BT-2 beam line at the National Institute of Standards and Technology (NIST) in Gaithersburg, Maryland, preliminary efforts have been conducted on a nickel-sodium heat pipe. The contrast between the attenuated beam and the background is calculated to be approximately 3%. This low contrast requires sacrifice in spatial or temporal resolution so efforts have since been concentrated on lithium (Li) which has a substantially larger neutron attenuation cross section. Using the CG-1D beam line at the High Flux Isotope Reactor (HFIR) of Oak Ridge National Laboratory (ORNL) in Oak Ridge, Tennessee, the first neutron images of high-temperature molybdenum (Mo)-Li heat pipes have been achieved. The relatively high neutron cross section of Li allows for the visualization of the Li working fluid inside the heat pipes. The evaporator region of a gravity assisted cylindrical heat pipe prototype 25 cm long was imaged from start-up to steady state operation up to approximately 900 C. In each corner of the square bore inside, the capillary action raises the Li meniscus above the bulk Li pool in the evaporator region. As the operational temperature changes, the meniscus shapes and the bulk meniscus height also changes. Furthermore, a three-dimensional tomographic image is also reconstructed from the total of 128 projection images taken 1.4o apart in which the Li had already cooled and solidified.

Kihm, Ken [University of Tennessee, Knoxville (UTK); Kirchoff, Eric [University of Tennessee, Knoxville (UTK); Golden, Matt [University of Tennessee, Knoxville (UTK); Rosenfeld, J. [Thermacore Inc.; Rawal, S. [Lockheed Martin Space Systems Company; Pratt, D. [United States Air Force Research Laboratory, Wright-Patterson Air Force Base; Bilheux, Hassina Z [ORNL; Walker, Lakeisha MH [ORNL; Voisin, Sophie [ORNL; Hussey, Dan [NIST Center for Neutron Research (NCRN), Gaithersburg, MD

2013-01-01T23:59:59.000Z

263

Alkali solution treatment on sandstone cores  

E-Print Network (OSTI)

was used for filtering the solution before the injection into the core. Hassler-t e Core Holder A stainless steel core holder was used to hold the core for treatment with the solutions. The core sample was positioned in the center of the core holder... and heat the water in the flask. Electric Heatin Ta e A silicone rubber embedded flexible heating tape was used to wrap the core holder to heat the core sample to the desired temperature. The maximum 0 continuous operating temperature of the tape...

Lee, Suk Jin

2012-06-07T23:59:59.000Z

264

Autonomous Control of an InSitu Propellant Production Plant Daniel Clancy, William Larson, Charles Pecheur, Peter Engrand , Charles Goodrich  

E-Print Network (OSTI)

the reactor, a condenser is used to separate the water form the gases and then an electrolysis unit is used conditions, can diagnose component failures, and can provide recovery recommendations. The Livingstone system of a device, detects and diagnoses anomalies and suggests alternative recovery actions. Livingstone is used

Bonaventure, Olivier

265

42Proceedings of the 2009 Northeastern Recreation Research Symposium GTR-NRS-P-66 Lincoln R. Larson  

E-Print Network (OSTI)

displayed relatively high levels of eco-awareness and environmental knowledge. However, Kruskal-Wallis tests

266

A general formula for non-cohesive bed load sediment transport Benoi^t Camenen), Magnus Larson  

E-Print Network (OSTI)

Department of Water Resources Engineering, Lund University, Box 118, S-221 00 Lund, Sweden Received 10 May Shields parameter to the power 1.5 was first confirmed for the steady flows. An exponential factor to take for the two half-periods of the wave (when the total instantaneous velocity u is in the direction of the wave

US Army Corps of Engineers

267

Fischer-Tropsch Fuels from Coal and Biomass Thomas G. Kreutz, Eric D. Larson, Guangjian Liu, Robert H. Williams  

E-Print Network (OSTI)

...................................................................................................................................8 2.2.2 Biomass as feedstock

268

New hypodiphosphates of the alkali metals: Synthesis, crystal structure and vibrational spectra of the hypodiphosphates(IV) M{sub 2}[(H{sub 2}P{sub 2}O{sub 6})(H{sub 4}P{sub 2}O{sub 6})] (M=Rb and Cs)  

SciTech Connect

The new hypodiphosphates(IV) Rb{sub 2}[(H{sub 2}P{sub 2}O{sub 6})(H{sub 4}P{sub 2}O{sub 6})] (1) and Cs{sub 2}[(H{sub 2}P{sub 2}O{sub 6})(H{sub 4}P{sub 2}O{sub 6})] (2) were synthesized by soft chemistry reactions from aqueous solutions of hypophosphoric acid and the corresponding heavy alkali-metal carbonates. Their crystal structures were determined by single crystal X-ray diffraction. Both compounds crystallize isotypic in the triclinic space group P-1 with one formula unit in the unit cell. The structures are built up by discrete (H{sub 2}P{sub 2}O{sub 6}){sup 2-} and (H{sub 4}P{sub 2}O{sub 6}) units in staggered conformation for the P{sub 2}O{sub 6} skeleton and the corresponding alkali-metal cations. In the (H{sub 2}P{sub 2}O{sub 6}){sup 2-} ion the hydrogen atoms are in a 'trans-trans' conformation. O{center_dot}H-O hydrogen bonds between the (H{sub 2}P{sub 2}O{sub 6}){sup 2-} and (H{sub 4}P{sub 2}O{sub 6}) groups consolidate the structures into a three-dimensional network. The FT-Raman and {sup 31}P and {sup 1}H and MAS NMR spectra of the title compounds have been recorded and interpreted, especially with respect to their assignment to the (H{sub 2}P{sub 2}O{sub 6}){sup 2-} and (H{sub 4}P{sub 2}O{sub 6}) groups. Thermogravimetric data of 2 have been interpreted in terms of a thermal decomposition model. - Graphical Abstract: The layered compounds Rb{sub 2}[(H{sub 2}P{sub 2}O{sub 6})(H{sub 4}P{sub 2}O{sub 6})] and Cs{sub 2}[(H{sub 2}P{sub 2}O{sub 6})(H{sub 4}P{sub 2}O{sub 6})] have been synthesized and investigated. Both crystallize isotypic. The structures are built up by discrete (H{sub 2}P{sub 2}O{sub 6}){sup 2-} and (H{sub 4}P{sub 2}O{sub 6}) units and the corresponding alkali-metal cations. Highlights: Black-Right-Pointing-Pointer Synthesis and single-crystal structure of new alkali hypodiphosphates. Black-Right-Pointing-Pointer Structures are characterized by [(H{sub 2}P{sub 2}O{sub 6})(H{sub 4}P{sub 2}O{sub 6})]{sup 2-} units and M{sup +} cations. Black-Right-Pointing-Pointer (H{sub 2}P{sub 2}O{sub 6}){sup 2-} and (H{sub 4}P{sub 2}O{sub 6}) units are linked by short hydrogen bonds. Black-Right-Pointing-Pointer Both compounds are characterized by {sup 31}P MAS-NMR spectra.

Wu, Peng [Institut fuer Anorganische und Analytische Chemie der TU Clausthal, Paul-Ernst-Strasse 4, D-38678 Clausthal-Zellerfeld (Germany)] [Institut fuer Anorganische und Analytische Chemie der TU Clausthal, Paul-Ernst-Strasse 4, D-38678 Clausthal-Zellerfeld (Germany); Wiegand, Thomas; Eckert, Hellmut [Institut fuer Physikalische Chemie and Graduate School of Chemistry, Westfaelische Wilhelms-Universitaet Muenster, Corrensstr. 28/30, D-48149 Muenster (Germany)] [Institut fuer Physikalische Chemie and Graduate School of Chemistry, Westfaelische Wilhelms-Universitaet Muenster, Corrensstr. 28/30, D-48149 Muenster (Germany); Gjikaj, Mimoza, E-mail: mimoza.gjikaj@tu-clausthal.de [Institut fuer Anorganische und Analytische Chemie der TU Clausthal, Paul-Ernst-Strasse 4, D-38678 Clausthal-Zellerfeld (Germany)] [Institut fuer Anorganische und Analytische Chemie der TU Clausthal, Paul-Ernst-Strasse 4, D-38678 Clausthal-Zellerfeld (Germany)

2012-10-15T23:59:59.000Z

269

First Occurrence of the Garnet-Ilmenite Transition in Silicates  

Science Journals Connector (OSTI)

...Res. 21, 419a, (1976); M. L. Entman, K. Kaniike, MI. Gold-stein, T. E. Nelson, E. P. Bornet, T. W. Futch, A. Schwartz,J. Biol. Chem. 251, 3140(1976); E. P. Bornet, M. L. Entman, D. C. Lehotay, G. S. Levey...

LIN-GUN LIU

1977-03-11T23:59:59.000Z

270

Policy Flash 2014-33 Revised Department of Energy (DOE) Acquisition Guide Chapter 7.2 Strategic Sourcing Requirements  

Energy.gov (U.S. Department of Energy (DOE))

Questions concerning this policy flash should be directed to Mike Larson at 202-287-1426 or email at Michael.Larson@hq.doe.gov

271

Ogden, Williams and Larson, Toward a Hydrogen-Based Transportation System, final draft, 8 May 2001 Toward a Hydrogen-Based Transportation System  

E-Print Network (OSTI)

................................................................................................................11 A Strategy for Pursuing Hydrogen Fuel Cell Vehicles as a Long-Term Option .........................................................................................................13 Methanol as an Initial Fuel for Fuel Cell Cars...............................................................................................................14 Hydrogen as an Initial Fuel for Fuel Cell Vehicles

272

Monolithic integrated tunable transmitters Y. A. Akulova, G. A. Fish, H. Xu, E. Hall, M. C. Larson, P. Abraham, H. Marchand, C. Turner, C. Coldren,  

E-Print Network (OSTI)

, P. Abraham, H. Marchand, C. Turner, C. Coldren, E. Hegblom, T. A. Strand, and L. A. Coldren Agility

Coldren, Larry A.

273

NOVEL REFRACTORY MATERIALS FOR HIGH ALKALI, HIGH TEMPERATURE ENVIRONMENTS  

SciTech Connect

Refractory materials can be limited in their application by many factors including chemical reactions between the service environment and the refractory material, mechanical degradation of the refractory material by the service environment, temperature limitations on the use of a particular refractory material, and the inability to install or repair the refractory material in a cost effective manner or while the vessel was in service. The objective of this project was to address the need for new innovative refractory compositions by developing a family of novel MgO-Al 2O3 spinel or other similar magnesia/alumina containing unshaped refractory composition (castables, gunnables, shotcretes, etc) utilizing new aggregate materials, bond systems, protective coatings, and phase formation techniques (in-situ phase formation, altered conversion temperatures, accelerated reactions, etc). This family of refractory compositions would then be tailored for use in high-temperature, high-alkaline industrial environments like those found in the aluminum, chemical, forest products, glass, and steel industries.

Hemrick, James Gordon [ORNL

2011-09-01T23:59:59.000Z

274

Tuning of the Metal-Insulator Transition via Alkali Adsorption  

NLE Websites -- All DOE Office Websites (Extended Search)

atoms easily give away their loosely bound outermost electron. "Correlated Electron" Technology Illumination at the flick of a switch. Instant communication across vast distances....

275

Raman Analysis of Perrhenate and Pertechnetate in Alkali Salts...  

NLE Websites -- All DOE Office Websites (Extended Search)

at high additions of the source chemical, since Na is more prevalent in the glass and ion exchange takes place. These results have significance to immobilization of nuclear...

276

Deleterious Reactions of Aggregate With Alkalis in Concrete  

Science Journals Connector (OSTI)

...SG), nuclear power plants, oil and...correct design engineering and selection...seems to change status a...preventive guidelines for new structures...easily takes 2-3 decades...a typical process for the manufacture...Report nr.2: Sedimentary...Charact 53(2-4):155-170...of Moxoto power plant. In: Procs...clinkering processes. Rev Mineral...Diagenetic changes in potential...

Maarten A.T.M. Broekmans

277

Ultracold chemistry with alkali-metal-rare-earth molecules  

E-Print Network (OSTI)

A first principles study of the dynamics of $^6$Li($^{2}$S) + $^6$Li$^{174}$Yb($^2\\Sigma^+$)$ \\to ^6$Li$_2(^1\\Sigma^+$) + $^{174}$Yb($^1$S) reaction is presented at cold and ultracold temperatures. The computations involve determination and analytic fitting of a three-dimensional potential energy surface for the Li$_2$Yb system and quantum dynamics calculations of varying complexities, ranging from exact quantum dynamics within the close-coupling scheme, to statistical quantum treatment, and universal models. It is demonstrated that the two simplified methods yield zero-temperature limiting reaction rate coefficients in reasonable agreement with the full close-coupling calculations. The effect of the three-body term in the interaction potential is explored by comparing quantum dynamics results from a pairwise potential that neglects the three-body term to that derived from the full interaction potential. Inclusion of the three-body term in the close-coupling calculations was found to reduce the limiting rate coefficients by a factor of two. The reaction exoergicity populates vibrational levels as high as $v=19$ of the $^6$Li$_2$ molecule in the limit of zero collision energy. Product vibrational distributions from the close-coupling calculations reveal sensitivity to inclusion of three-body forces in the interaction potential. Overall, the results indicate that a simplified model based on the long-range potential is able to yield reliable values of the total reaction rate coefficient in the ultracold limit but a more rigorous approach based on statistical quantum or quantum close-coupling methods is desirable when product rovibrational distribution is required.

C. Makrides; J. Hazra; G. B. Pradhan; A. Petrov; B. K. Kendrick; T. Gonzlez-Lezana; N. Balakrishnan; S. Kotochigova

2014-10-28T23:59:59.000Z

278

Deleterious Reactions of Aggregate With Alkalis in Concrete  

Science Journals Connector (OSTI)

...CN Tower, Toronto/CA), office skyscrapers (e.g., Burj Khalifa, Dubai/UAE), theatres (e.g., Opera House, Sydney/AU), hotels and casinos (e.g., Marina Bay Area, Singapore/SG), nuclear power plants, oil and gas...

Maarten A.T.M. Broekmans

279

Ultracold chemistry with alkali-metal-rare-earth molecules  

E-Print Network (OSTI)

A first principles study of the dynamics of $^6$Li($^{2}$S) + $^6$Li$^{174}$Yb($^2\\Sigma^+$)$ \\to ^6$Li$_2(^1\\Sigma^+$) + $^{174}$Yb($^1$S) reaction is presented at cold and ultracold temperatures. The computations involve determination and analytic fitting of a three-dimensional potential energy surface for the Li$_2$Yb system and quantum dynamics calculations of varying complexities, ranging from exact quantum dynamics within the close-coupling scheme, to statistical quantum treatment, and universal models. It is demonstrated that the two simplified methods yield zero-temperature limiting reaction rate coefficients in reasonable agreement with the full close-coupling calculations. The effect of the three-body term in the interaction potential is explored by comparing quantum dynamics results from a pairwise potential that neglects the three-body term to that derived from the full interaction potential. Inclusion of the three-body term in the close-coupling calculations was found to reduce the limiting rate ...

Makrides, C; Pradhan, G B; Petrov, A; Kendrick, B K; Gonzlez-Lezana, T; Balakrishnan, N; Kotochigova, S

2014-01-01T23:59:59.000Z

280

Aqueous Cathode for Next-Generation Alkali-Ion Batteries  

Science Journals Connector (OSTI)

The aqueous cathode in the flow-through mode can be individually stored in a fuel tank, which reduces the volume of the battery and increases the design flexibility of the battery structure, as shown in Figure 1. ... Unlike previous lithium?water batteries, the aqueous cathode is not plagued by H2 evolution from the solution, and the battery is efficiently rechargeable. ...

Yuhao Lu; John B. Goodenough; Youngsik Kim

2011-03-28T23:59:59.000Z

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


281

Equation of state for molten alkali metal alloys  

SciTech Connect

Calculated results of the liquid density of binary molten alloys of Na-K and K-Cs over the whole range of concentrations and that of a ternary molten eutectic of Na-K-Cs from the freezing point up to several hundred degrees above the boiling point are presented. The calculations were performed with the analytical equation of state proposed by Ihm, Song, and Mason, which is based on statistical-mechanical perturbation theory. The second virial coefficients were calculated from the corresponding-states correlation of Mehdipour and Boushehri. Calculation of the other two temperature-dependent parameters was carried out by scaling. The calculated results cover a much wider range of temperatures and are more accurate than those presented in the previous work.

Eslami, H.

1999-09-01T23:59:59.000Z

282

Stark Effect in Color Centers of Alkali Halides  

Science Journals Connector (OSTI)

The stark effect of the F center in NaCl, NaBr, KCl, KBr, KI, and RbCl, the M center in KCl, and the Z1 center in KCl: Sr was measured using an ac electric field. The fractional change of the absorption coefficient, ???, at the peak of the F band, normalized to a Lorentz local field of 200 kV/cm, was found to be approximately 210-5 for NaCl and NaBr, 1110-5 for RbCl, and 1710-5 for KCl, KBr, and KI. The value of ??? at the peak of the M band in KCl was (3.90.4)10-5 for an applied electric field of 97 kV/cm. A measurement of the change in the absorption coefficient, ??, versus photon energy produced a nonsymmetrical curve. This indicates that the effect observed was not the linear Stark effect, and thus provides additional evidence that Seitz's model is incorrect. The absorption coefficient increased at energies lower than the M band, corresponding to a decrease in the absorption coefficient of the M band. The effect is attributed to the mixing of two nondegenerate energy levels of opposite parity. The optical transition to the level of lower energy is normally forbidden. The Z1 center in KCl: Sr did not exhibit a detectable Stark effect. It was determined, however, that ???unit.

Charles R. Rhyner and John R. Cameron

1968-05-15T23:59:59.000Z

283

NOvel Refractory Materials for High Alkali, High Temperature Environments  

SciTech Connect

Refractory materials can be limited in their application by many factors including chemical reactions between the service environment and the refractory material, mechanical degradation of the refractory material by the service environment, temperature limitations on the use of a particular refractory material, and the inability to install or repair the refractory material in a cost effective manner or while the vessel was in service. The objective of this project was to address the need for new innovative refractory compositions by developing a family of novel MgO-Al2O3 spinel or other similar magnesia/alumina containing unshaped refractory composition (castables, gunnables, shotcretes, etc) utilizing new aggregate materials, bond systems, protective coatings, and phase formation techniques (in-situ phase formation, altered conversion temperatures, accelerated reactions, etc). This family of refractory compositions would then be tailored for use in high-temperature, highalkaline industrial environments like those found in the aluminum, chemical, forest products, glass, and steel industries. A research team was formed to carry out the proposed work led by Oak Ridge National Laboratory (ORNL) and was comprised of the academic institution Missouri University of Science and Technology (MS&T), and the industrial company MINTEQ International, Inc. (MINTEQ), along with representatives from the aluminum, chemical, glass, and forest products industries. The two goals of this project were to produce novel refractory compositions which will allow for improved energy efficiency and to develop new refractory application techniques which would improve the speed of installation. Also methods of hot installation were sought which would allow for hot repairs and on-line maintenance leading to reduced process downtimes and eliminating the need to cool and reheat process vessels.

Hemrick, J.G.; Griffin, R. (MINTEQ International, Inc.)

2011-08-30T23:59:59.000Z

284

Characterization of Selective Binding of Alkali Cations with...  

NLE Websites -- All DOE Office Websites (Extended Search)

understanding of many biological and chemical processes, including protein unfolding and bubble coalescence. A cluster used in a calculation of an acetate molecule interacting...

285

PLUTONIUM SOLUBILITY IN HIGH-LEVEL WASTE ALKALI BOROSILICATE GLASS  

SciTech Connect

The solubility of plutonium in a Sludge Batch 6 (SB6) reference glass and the effect of incorporation of Pu in the glass on specific glass properties were evaluated. A Pu loading of 1 wt % in glass was studied. Prior to actual plutonium glass testing, surrogate testing (using Hf as a surrogate for Pu) was conducted to evaluate the homogeneity of significant quantities of Hf (Pu) in the glass, determine the most appropriate methods to evaluate homogeneity for Pu glass testing, and to evaluate the impact of Hf loading in the glass on select glass properties. Surrogate testing was conducted using Hf to represent between 0 and 1 wt % Pu in glass on an equivalent molar basis. A Pu loading of 1 wt % in glass translated to {approx}18 kg Pu per Defense Waste Processing Facility (DWPF) canister, or about 10X the current allowed limit per the Waste Acceptance Product Specifications (2500 g/m{sup 3} of glass or about 1700 g/canister) and about 30X the current allowable concentration based on the fissile material concentration limit referenced in the Yucca Mountain Project License Application (897 g/m{sup 3}3 of glass or about 600 g Pu/canister). Based on historical process throughput data, this level was considered to represent a reasonable upper bound for Pu loading based on the ability to provide Pu containing feed to the DWPF. The task elements included evaluating the distribution of Pu in the glass (e.g. homogeneity), evaluating crystallization within the glass, evaluating select glass properties (with surrogates), and evaluating durability using the Product Consistency Test -- Method A (PCT-A). The behavior of Pu in the melter was evaluated using paper studies and corresponding analyses of DWPF melter pour samples.The results of the testing indicated that at 1 wt % Pu in the glass, the Pu was homogeneously distributed and did not result in any formation of plutonium-containing crystalline phases as long as the glass was prepared under 'well-mixed' conditions. The incorporation of 1 wt % Pu in the glass did not adversely impact glass viscosity (as assessed using Hf surrogate) or glass durability. Finally, evaluation of DWPF glass pour samples that had Pu concentrations below the 897 g/m{sup 3} limit showed that Pu concentrations in the glass pour stream were close to targeted compositions in the melter feed indicating that Pu neither volatilized from the melt nor stratified in the melter when processed in the DWPF melter.

Marra, J.; Crawford, C.; Fox, K.; Bibler, N.

2011-01-04T23:59:59.000Z

286

Electron resonances in alkali-metal overlayers on metals  

Science Journals Connector (OSTI)

Based on a jellium model using a self-consistent potential modified to an image-potential shape outside the surface of Na and Cs monolayers on Al(111), we have identified resonances in the overlayer-induced density of electron states. This jellium-model description of the electronic structure is supported by the good agreement between the calculated energy for the lowest unoccupied level and the observed energy by inverse photoemission for (22)Na on Al(111).

Lars-Allan Salmi and Mats Persson

1989-03-15T23:59:59.000Z

287

Efficient Destruction of CF4 through In Situ Generation of Alkali Metals from Heated Alkali Halide Reducing Mixtures  

Science Journals Connector (OSTI)

The atm. lifetimes of the fluorinated gases CF4, C2F6, c-C4F8, (CF3)2c-C4F6, C5F12, C6F14, C2F5Cl, C2F4Cl2, CF3Cl, and SF6 are of concern because of the effects that these long-lived compds. ... CF4 is an extremely stable gas which strongly absorbs IR radiation at ?8 ?m, and therefore is capable of influencing the greenhouse effect. ... Measurements of CF4 concns. in the atm. ...

Myung Churl Lee; Wonyong Choi

2002-02-14T23:59:59.000Z

288

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

E-Print Network (OSTI)

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

Zevenhoven, Ron

289

Garnet-kyanite clinopyroxenites and garnet-kyanite restites from the Manicouagan imbricate zone; a case of high-P--high-T metamorphism in the Grenville Province  

Science Journals Connector (OSTI)

...report of plagioclase-freeassemblageswithpyrope-richgarner, kyaniteandNa-poorclinopyroxene. TABLB4. TYPICAL COMPO$IIONS OFCUNOPYRO)GM IN Gt-Ky CUNOPYROXEMTE,MAMCOUAGAN IMBRICATEZONE saqlo Srq TO, AIrOr FO MiO l4O CS Na,O @l Xa Xh Xd...

Aphrodite Indares

290

Policy Flash 2013-65 Procurement Evaluation & Re-Engineering Team (PERT) and Establishment of a 5-year Cycle with Corresponding Schedule  

Energy.gov (U.S. Department of Energy (DOE))

Questions concerning this policy flash should be directed to Mike Larson of the Office of Acquisition and Project Management, Strategic Programs Division at (202) 287-1426 or at Michael.Larson@hq...

291

High-pressure elasticity of sodium majorite garnet, Na2MgSi5O12  

Science Journals Connector (OSTI)

...Ceperley and Adler 1980; Perdew and Wang 1986; Perdew et al. 1991, 1996...pressure derivatives were reported. a Synchroton X-ray diffraction (Dymshits et...1895-1898. Perdew, J.P. and Wang, Y. (1986) Accurate and simple...

Mainak Mookherjee

292

Thermodynamic modelling of Cr-bearing garnets with implications for diamond inclusions and peridotite xenoliths  

E-Print Network (OSTI)

, Zürich, Switzerland e Geological Survey of Western Australia, Mineral House, 100 Plain Street, East Perth zonations result from metasomatic processes. This sheds further light on peridotitic diamond inclusions

293

Raman spectroscopic study of garnet inclusions in diamonds from the mantle transition zone  

Science Journals Connector (OSTI)

...Philippe Gillet 1 Violaine Sautter 2 Jeffery Harris 3 Bruno Reynard 1 Benjamin Harte 4 Martin Kunz 5 E-mail: pgillet...France Sautter Violaine Author Harris Jeffery Author Reynard Bruno Author Harte Benjamin Author Kunz Martin Author Museum National...

Philippe Gillet; Violaine Sautter; Jeffery Harris; Bruno Reynard; Benjamin Harte; Martin Kunz

294

Precision Lattice-Parameter Determination of (Mg,Fe)SiO3 Tetragonal Garnets  

Science Journals Connector (OSTI)

...except for oxygen) powder mixtures of MgO (periclase), Fe2O3 (hematite), and SiO2 (vitreous silica) were pelletized...temperature on a powder diffractom-eter with an Fe rotating anode, with Mn-filtered Fe Kot (Koxl: wavelength = 1.93597...

Rie Matsubara; Hideo Toraya; Satoshi Tanaka; Hiroshi Sawamoto

1990-02-09T23:59:59.000Z

295

Glacial deposits identified by chattermark trails in detrital garnets: Comment and reply  

Science Journals Connector (OSTI)

...and grainstones of the shallow-water platform. Although comparison of ancient and...A. C., and Ball, M. M., 1970, Submersible observat ions in the Straits of Florida...associated with cracks that are larger, semi- circular, isolated, usually disorganized...

296

E-Print Network 3.0 - all-garnet magnetophotonic crystals Sample...  

NLE Websites -- All DOE Office Websites (Extended Search)

... Source: Jonsson, Fredrik - Micronic Laser Systems; Zheludev, Nikolay - Optoelectronics Research Centre & School of Physics and Astronomy, University of Southampton...

297

U-Pb ID-TIMS dating applied to U-rich inclusions in garnet  

Science Journals Connector (OSTI)

...xenocrysts from the ile Bizard: Evidence for high temperature radon diffusion? Chemical Geology, 172, 77-93. Jaffey, A...ultrahigh-pressure pelitic schist in the Kokchetav massif, northern Kazakhstan. Gondwana Research, 15, 137-150. Mattinson, J.M...

Selma M. Lima; Fernando Corfu; Ana M.R. Neiva; Joo M.F. Ramos

298

Optimization Online - Nonlinear Optimization Submissions - 2011  

E-Print Network (OSTI)

Stephen Billups, Jeffrey Larson, Peter Graf. Quadratic ... Benjamin Recht, Christopher Re ... Feng Niu, Benjamin Recht, Re Christopher, Stephen Wright.

299

Quarterly Biomass Program/Clean Cities State Web Conference:...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

larson.pdf More Documents & Publications Renewable Fuel Standards Program Update EISA 2007: Focus on Renewable Fuels Standard Program...

300

Pair-Preference and Site-Preference Models for Rare-Earth Iron Garnets Exhibiting Noncubic Magnetic Anisotropies  

Science Journals Connector (OSTI)

The pair anisotropy model is extended to include the next-nearest-neighbor tetrahedral-iron ions. An anisotropy model based on growth-induced preferential site occupation is derived using the pair model. With the site model the nearest-neighbor tetrahedral- and nearest-neighbor octahedral-iron ions lead solely to a uniaxial anisotropy under both growth facets. Inclusion of the next-nearest-neighbor tetrahedral-iron ions results in the experimentally observed orthorhombic anisotropies.

A. Rosencwaig; W. J. Tabor; R. D. Pierce

1971-03-29T23:59:59.000Z

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


301

Electrically and magnetically tunable phase shifters based on a barium strontium titanate-yttrium iron garnet layered structure  

E-Print Network (OSTI)

to rapidly change the dielectric constant of a ferroelectric material under the application of a dc electric, by incorporating a ferrite material into a device, one gains the ability to change both the dielectric constant, a phase shifter will have changing characteris- tic impedance as it changes its phase. In this work, we em

302

Atomic structure of the {sigma}5 (210)/[001] symmetric tilt grain boundary in yttrium aluminum garnet  

SciTech Connect

The {Sigma}5(210)/[100] symmetric tilt grain boundary in YAG was produced by UHV diffusion bonding precisely oriented single crystals. The boundary has been characterized by HREM along two different directions, parallel and perpendicular to the tilt axis. Models of the atomic structure of the boundary were formed following the Coincident Site Lattice scheme. The resulting models are equivalent to twins formed at the atomic scale. The high resolution images show no rigid crystal translations away from the perfect mirror reflection relation. Comparison of the simulated images using the atomic model as input with the experimental images identifies the plane of mirror symmetry. The atomic model is shown to be in good agreement with the experimental images when viewed parallel to tilt axis, but disagrees with the images perpendicular to tilt axis. Agreement between simulated and experimental images can be improved by changing the composition of the grain boundary with respect to the bulk. To reach a more certain conclusion on the structure of the grain boundary will require additional theoretical calculations.

Campbell, G.H.; King, W.E.

1996-06-24T23:59:59.000Z

303

Growth and ferromagnetic resonance of yttrium iron garnet thin films on Yiyan Sun, Young-Yeal Song, and Mingzhong Wu  

E-Print Network (OSTI)

doped TbMnO3 thin films grown by pulsed laser deposition J. Appl. Phys. 112, 033914 (2012) Structural. Phys. Lett. 101, 033910 (2012) Ge2Sb2Te5 phase-change films on polyimide substrates by pulsed laser and two thin cladding layers. The cladding layers were high entropy alloy nitrides (HEAN) and served

304

E-Print Network 3.0 - anionic alkali mineral Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

of California at Berkeley Collection: Materials Science ; Chemistry 63 Boron and boron isotope systematics in the peralkaline Ilmaussaq intrusion (South Greenland) and its granitic...

305

E-Print Network 3.0 - alkali burn traumatic Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

- Waste-to-Energy Research and Technology Council (WTERT) Collection: Renewable Energy 26 APPLICATION FORM Directions for Rank Ordering Rotation Preferences Summary:...

306

A TWO-DIMENSIONAL, NON-EQUILIBRIUM, NUMERICAL MODEL OF AN ALKALI SEEDED  

E-Print Network (OSTI)

by Darrel Kim Robertson B.Sc. Physics with Space Science and Technology, Leicester University, 1995 can pass through the gas. The ions do not recombine so the energy required to create them cannot are treated as one uid and the heavy species as a second, with separate temperatures and a heat transfer rate

307

A New Alkali-Thermostable Azoreductase from Bacillus sp. Strain SF  

Science Journals Connector (OSTI)

...the treatment of wastewater in the textile finishing...thus preventing recycling of the treated wastewater. In activated sludge...of these types of wastewater has resulted in considerable...decolorization and recycling of effluents (1...

Jrgen Maier; Andreas Kandelbauer; Angelika Erlacher; Artur Cavaco-Paulo; Georg M. Gbitz

2004-02-01T23:59:59.000Z

308

E-Print Network 3.0 - alkali metals phase Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

Summary: , calcium hypochlorite, hydrogen fluoride (HF) Ammonium Nitrate acids, metal powders, flammable liquids... , sodium carbide, turpentine, finely divided metals...

309

E-Print Network 3.0 - alkali metal dimers Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

Summary: , calcium hypochlorite, hydrogen fluoride (HF) Ammonium Nitrate acids, metal powders, flammable liquids... , sodium carbide, turpentine, finely divided metals...

310

Electrical Effects associated with the Mechanical Deformation of Single Crystals of Alkali Halides  

Science Journals Connector (OSTI)

... 0-5 cm. in size cleaved from the crystals. The larger opposite faces were roughened with emery paper, and colloidal graphite was painted on to serve as an electrode, ...

J. E. CAFFYN; T. L. GOODFELLOW

1955-11-05T23:59:59.000Z

311

Some Alkali Metal Corrosion Effects in a Rankine Cycle Test Loop  

Science Journals Connector (OSTI)

A two-loop lithium-boiling potassium facility was constructed and tested at the Jet Propulsion Laboratory to simulate the major elements and working fluids of a two-loop, nuclear, turbo-plant concept of intere...

Wayne M. Phillips

1970-01-01T23:59:59.000Z

312

Chromatographic Enrichment of Acidic Compounds from Organic Solvents Using Alkali Metal Silicates  

Science Journals Connector (OSTI)

......Fox, D.S. Farrier, and R.E. Paulson. Chemical char- acterization and analytical considerations for an in situ oil shale process water. U.S. Department of Energy, LETC/RI-78/7. Laramie Energy Technology Center, Lara- mie, Wyoming......

D.L. Stalling; J.D. Petty; L.M. Smith

1981-01-01T23:59:59.000Z

313

Effect of alkali-metal doping on photoluminescence of CdS films  

Science Journals Connector (OSTI)

It is established that doping of CdS polycrystalline films with alkaline metals (Li,... Cd 2? ...cation vacancies, which are nonradiative recombination centers ...

V. G. Klyuev; T. L. Maiorova

2007-05-01T23:59:59.000Z

314

Alkali Separation in Steam Injected Cyclone Wood Powder Gasifier for Gas Turbine Application  

Science Journals Connector (OSTI)

Cyclone gasification of wood powder at atmospheric pressure has been studied. The cyclone gasifier works as a particle separator as well ... cyclone with air or air/steam as transport medium. The effects of stoch...

C. Fredriksson; B. Kjellstrm

1997-01-01T23:59:59.000Z

315

E-Print Network 3.0 - alkali-resistant silicon nitride Sample...  

NLE Websites -- All DOE Office Websites (Extended Search)

Computer Science Collection: Engineering ; Materials Science 4 Published in 'Silicon Carbide, III-Nitrides and Related Materials', Year: 1998, pp: 1149-1152 Periodical: Materials...

316

E-Print Network 3.0 - alkali-activated slag concrete Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

66 By-Products Utilization Summary: Center for By-Products Utilization SELF-COMPACTING CONCRETE (SCC) OR SELF- LEVELING CONCRETE (SLC... - MILWAUKEE 12;2 SELF-COMPACTING...

317

Nanomechanical evaluation of nickeltitanium surface properties after alkali and electrochemical treatments  

Science Journals Connector (OSTI)

...coefficient for spark oxidation samples showed a steady...applications. Spark oxidation resulted in the formation...treatments and spark oxidation. Proc. Eur. Soc...Ohtsuki2007Apatite-forming ability of micro-arc plasma oxidized layer...

2008-01-01T23:59:59.000Z

318

Enzymatic production of xylooligosaccharides from alkali solubilized xylan of natural grass (Sehima nervosum)  

Science Journals Connector (OSTI)

In this study, a process for producing XOS from Sehima nervosum grass was developed. The grass contains 28.1% hemicellulose. NaOH and steam application yielded 98% of original xylan in contrast to 85% by KOH application. Hydrolysis of xylan with commercial xylanase caused breakdown into XOS comprising of xylobiose, xylotriose along with xylose. Response surface model (RSM) revealed highest xylobiose yield (11g/100g xylan) at pH 5.03, temperature 45.19C, reaction time 10.11h with enzyme dose 17.41U. Similarly for maximizing xylotriose yield, ideal hydrolysis conditions were pH 5.11, temperature 40.33C, reaction time 16.55h with enzyme dose 13.20U. A two step process encompassing xylan fractionation and enzymatic hydrolysis enabled XOS production from the S. nervosum grass.

A.K. Samanta; Natasha Jayapal; A.P. Kolte; S. Senani; Manpal Sridhar; K.P. Suresh; K.T. Sampath

2012-01-01T23:59:59.000Z

319

E-Print Network 3.0 - alkali induced heave Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

Energy Storage, Conversion and Utilization 38 Simulations of a passively actuated oscillating airfoil using a Discontinuous Galerkin method Summary: of a pitching and...

320

E-Print Network 3.0 - alkali atom vapor Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

a vapor cell magneto-optical trap. 1999 American... to the vacuum pumps or due to adsorption of the ... Source: Jin, Deborah - JILA, University of Colorado at Boulder...

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


321

Synthesis of higher alcohols on copper catalysts supported on alkali-promoted basic oxides  

E-Print Network (OSTI)

in higher alcohol synthesis and water±gas shift (WGS) reactions reversibly inhibits the formation. A detailed kinetic analysis shows that chain growth probabilities are very similar on K±CuyMg5CeOx and Cs of their higher water tolerance, reduced fuel volatility and lower vapor lock tendency, and also because

Iglesia, Enrique

322

An Archaean sub-seafloor geothermal system, calc-alkali' trends, and massive sulphide genesis  

Science Journals Connector (OSTI)

... only weakly hydrated during halmyrolysis and burial metamorphism, but, in some areas, sub-seafloor geothermal activity contemporaneous with volcanism produced more intense rock-water interaction with higher water-to-rock ... alkaline' traits reflect a hydrothermal overprint caused by rock-water interaction during sub-sea floor geothermal activity as a modified seawater brine intensely spili-tized, silicified and leached metals from ...

P. J. MacGeehan; W. H. MacLean

1980-08-21T23:59:59.000Z

323

Recovering and recycling Hg from chlor-alkali plant wastewater sludge  

Science Journals Connector (OSTI)

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

L. G. Twidwell; R. J. Thompson

2001-01-01T23:59:59.000Z

324

TECHNOLOGY DATA FOR HIGH TEMPERATURE SOLID OXIDE ELECTROLYSER CELLS, ALKALI AND PEM ELECTROLYSERS  

E-Print Network (OSTI)

. Introduction One of the challenges in a future 100 % sustainable energy system is how to realise sustainable the integration of electrolysers in energy systems in combination with other power plants. Values Mathiesen Iva Ridjan David Connolly Department of Energy Technology Mads Pagh Nielsen Technical University

Nielsen, Mads Pagh

325

Synthetic receptors as models for alkali metal cation-? binding sites in proteins  

Science Journals Connector (OSTI)

...Chemistry, University of Missouri, 601 South College Avenue...calculations (1012), gas phase studies (1315...vacuo to afford a yellow oil. The oil was purified by flash column...product as a colorless oil. After 24 h under high...

Stephen L. De Wall; Eric S. Meadows; Leonard J. Barbour; George W. Gokel

2000-01-01T23:59:59.000Z

326

Probing alkali metal? interactions with the side chain residue of tryptophan  

Science Journals Connector (OSTI)

...Chemistry, University of Missouri, Columbia, MO 65211...7 was obtained as an oil. The crude material was kept under...unencumbered indole in the gas phase. In 3...white powder), 93 (8, oil), and 73% (9, oil...X-SEED (Univ. of Missouri, Columbia, MO). 35...

Jiaxin Hu; Leonard J. Barbour; George W. Gokel

2002-01-01T23:59:59.000Z

327

E-Print Network 3.0 - acid based alkali-free Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

carboxylic ... Source: Glaser, Rainer - Department of Chemistry, University of Missouri-Columbia Collection: Chemistry 7 GTQ, Chemistry 212, Dr. Glaser, FS96 --1 --GTQ on...

328

Light narrowing of magnetic resonance lines in dense, optically pumped alkali-metal vapor  

Science Journals Connector (OSTI)

A new and unusual phenomenon which we call light narrowing is reported and discussed in this paper. We discovered this effect in dense, spin-polarized cesium vapor optically pumped with a cw blue dye laser beam tuned to the second resonance D1 line (4593 ). We observe a significant narrowing of the radio-frequency power-broadened magnetic resonance lines (linewidths narrow by as much as a factor of 2.5) when the intensity of the circularly polarized incident dye laser beam is increased by either focusing the beam or by the removal of attenuating filters from the focused beam. The magnetic resonance linewidths in spin-polarized cesium vapor were measured over a wide range of cesium number densities (51012 cm-3 ?[Cs]?11016 cm-3). This corresponds to cesium spinexchange rates of 4.5103 to 9106 sec-1. For low cesium number densities (51012 11015 cm-3) this light-narrowing effect almost completely disappears. In the limit of low-radio-frequency power the magnetic resonance linewidths for focused and unfocused dye laser beam are nearly the same. Experimental observations on this new effect are presented in detail. In the latter part of this paper a self-contained theoretical treatment of the light-narrowing effect is developed. Using Bloch equations in the presence of optical pumping, spin relaxation (diffusion, electron randomization), rapid spin exchange, and radio-frequency magnetic field, expressions for magnetic resonance line shapes are derived. In general, we find good agreement between our experimental results and the theory.

N. D. Bhaskar; J. Camparo; W. Happer; A. Sharma

1981-06-01T23:59:59.000Z

329

E-Print Network 3.0 - alkali-promoted cobalt oxide Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

of Materials Science and Engineering, University of Idaho Collection: Materials Science 4 Magnetic properties of Aucore-Coshell nanoparticles Tianlong Wen and Kannan M....

330

High-pressure optical studies of doped alkali halides. IV. Mixed crystals  

Science Journals Connector (OSTI)

Optical excitation and emission studies have been made on various compositions of mixed crystals of KCl1-xBrx:In, KCl1-xBrx:Tl, and NaCl1-xBrx:Tl. For the potassium salts measurements were made in both the NaCl and CsCl phases. In general, excitation peak locations were measurably below the prediction from linear interpolation, while emission peak locations deviated so far as to provide a minimum in peak location and a maximum in the Stokes's shift at an intermediate composition. The half-widths were greater than a linear interpolation would predict. This last result can be explained in terms of the number of different isostructures with which the impurity ion interacts in a mixed crystal. Although the analytical relation between Stokes's shift and dielectric constant does not give a quantitative correlation, it is of interest that one can quantitatively relate the deviation from linearity of the Stokes's shift and the dielectric constant using a single scaling parameter for both the KCl1-xBrx:Tl and NaCl1-xBrx:Tl systems.

W. D. Drotning and H. G. Drickamer

1976-05-15T23:59:59.000Z

331

Oxygen-Consuming Chlor-Alkali Cell Configured To Minimize Peroxide...  

NLE Websites -- All DOE Office Websites (Extended Search)

formation. The cell included an ion-exchange membrane that divided the cell into an anode chamber including an anode and a cathode chamber including an oxygen gas diffusion...

332

E-Print Network 3.0 - alkali metal thermoelectric Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

requirements. By optimizing the geometry of each... of these coolers with optoelectronic devices should be possible. KEY WORDS: integratecl; thermionic; ... Source:...

333

High levels of alkali-metal storage in thin films of hexa-peri-hexabenzocoronene  

E-Print Network (OSTI)

the potential use of these graphene materials in lithium-ion batteries with a high charge-storage capacity community.1 Rechargeable batteries, in particular ``lithium-ion'' batteries, are one of the most important com- mercialized energy storage devices. The most common struc- ture of lithium-ion batteries involves

Peters, Achim

334

The Effects of Using Alkali-Silica Reaction Affected Recycled Concrete Aggregate in Hot Mix Asphalt  

E-Print Network (OSTI)

-RCA in an HMA pavement were identified. Results obtained using accelerated laboratory conditions were extrapolated based on anticipated field conditions. Guidelines for the mitigation of potential distresses in HMA made with ASR-RCA are presented. v... through the Airfield Asphalt Pavement Technology Program. Finally, thanks to my mother and father for their encouragement and to my fianc?e for her patience and love. vii NOMENCLATURE AFB - Air Force Base AASHTO - American Association of State...

Geiger, Brian James

2011-10-21T23:59:59.000Z

335

E-Print Network 3.0 - alkali-silica reaction observed Sample...  

NLE Websites -- All DOE Office Websites (Extended Search)

Source: Texas at Austin, University of - Center for Transportation Research Collection: Energy Storage, Conversion and Utilization 40 Achieving "Green" Concrete Through The Use...

336

Ab initio prediction of thermodynamics in alkali metal-air batteries  

E-Print Network (OSTI)

Electric vehicles ("EVs") require high-energy-density batteries with reliable cyclability and rate capability. However, the current state-of-the-art Li-ion batteries only exhibit energy densities near ~150 Wh/kg, limiting ...

Kang, ShinYoung

2014-01-01T23:59:59.000Z

337

Alkali attack on a mullite refractory in the Grand Forks Energy Technology Center slagging gasifier  

Science Journals Connector (OSTI)

A mullite refractory lining in the Grand Forks Energy Technology Center slagging gasifier cracked and spoiled after intermittent exposure to...

C. R. Kennedy

1981-06-01T23:59:59.000Z

338

Effect of Coal Minerals on Chlorine and Alkali Metals Released during Biomass/Coal Cofiring  

Science Journals Connector (OSTI)

The threat of increased global warming has subjected the use of fossil fuels to increasing scrutiny in terms of greenhouse gas and pollutant emissions. ... Figure 1 Relative amounts of CO(g), NO(g), CO2(g), and SO2(g) released during the combustion of selected biomass fuels, coals, and 15% biomass/coal blends at 1100 C in 20% oxygen in helium. ...

David C. Dayton; Deirdre Belle-Oudry; Anders Nordin

1999-09-21T23:59:59.000Z

339

E-Print Network 3.0 - alkali-activated fly ash Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

Engineering ; Materials Science 12 By-Products Utilization Summary: CONTAINING CLEAN-COAL ASH AND CLASS F FLY ASH By Tarun R. Naik, Rudolph N. Kraus, Rafat Siddique... of...

340

E-Print Network 3.0 - alkali-silica reaction gel Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

for polymer- ization reactions. Preparation of 3,3'-Azobis(6-Amino- 1,2,4,5-Tetrazine) Michael A. Hiskey David Source: Los Alamos National Laboratory, Theoretical...

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


341

New Alkali Doped Pillared Carbon Materials Designed to Achieve Practical Reversible Hydrogen Storage for Transportation  

E-Print Network (OSTI)

and room temperature. This satisfies the DOE (Department of Energy) target of hydrogen-storage materials single-wall nanotubes can lead to a hydrogen-storage capacity of 6.0 mass% and 61:7 kg=m3 at 50 bars of roughly 1­20 bars and ambient temperature. Chen et al. reported remarkable hydrogen-storage capacities

Goddard III, William A.

342

E-Print Network 3.0 - alkali electrolysis process Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

Energy, Hydrogen, Fuel Cells and Infrastructure Technologies Program Collection: Energy Storage, Conversion and Utilization ; Renewable Energy 2 Current (2009)...

343

Characterization of selective binding of alkali cations with carboxylate by x-ray absorption spectroscopy  

E-Print Network (OSTI)

spectra measured for aqueous formate and acetate solutions containing lithium, sodium, and potassium simulations and other experi- ments. The carbon K-edge spectra of the acetate carbonyl feature centered near with the carboxylate groups of the model carboxylate anions formate and acetate, using liquid microjet technology

Cohen, Ronald C.

344

A comparison of the products of the hydrolysis of cottonseed meats with acid and alkali  

E-Print Network (OSTI)

?siege that it aer bo qaaatitaiivelr re assed fan% tho brdr?I+esto ae beri~ self?tee Res?Tery hpdreehierfo acid aep bo roasted br or?per?ties aa4?2 redwood pros?are? Sera sob?tea?os ~ pret?iso ~ sa4 golsti& ero totally hrdrelpaed with? oat tho foeaatioa ef...&relrsato was ~ nalyned eoeer4ing te Ae Vea glyhIP nsthod exospt for soreral changes whish will bo ?nplaiaod ia the outline ef the prooednrw whish fnllewsi Ths hydreohlerie acid was reeeed frwa ihe hydrelyeaie nader redwood pressers, the residne was tohon wp with wares...

Schoch, Henry Bernard

2012-06-07T23:59:59.000Z

345

E-Print Network 3.0 - alkali-resistant denox catalysts Sample...  

NLE Websites -- All DOE Office Websites (Extended Search)

University, Department of Earth and Environmental Engineering, Center for Life Cycle Analysis Collection: Renewable Energy 14 For this study, researchers from the University of...

346

E-Print Network 3.0 - alkali-activated slag pastes Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

. Vitrification produces inert slag that can be used as a construction material. Gasification produces a fuel gas... of the waste to produce a metal alloy and an environmentally...

347

E-Print Network 3.0 - alkali metal compounds Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

. . . . . . . . . . . 3-3 3.3 Formation of sulphur compounds during combustion and gasification . ... Source: Laughlin, Robert B. - Department of Physics, Stanford University...

348

Structural Assessment of D-Regions Affected by Alkali-Silica Reaction/Delayed Ettringite Formation  

E-Print Network (OSTI)

of the reinforcing steel in the specimens due to the expansion of the concrete primarily from ASR, which effectively prestressed and confined the core concrete. Sectional analysis and Strut-and-Tie Modeling (STM) of the experimental specimens were applied. Three...

Liu, Shih-Hsiang 1979-

2012-11-12T23:59:59.000Z

349

THERMAL GRADIENT MIGRATION OF BRINE INCLUSIONS IN SYNTHETIC ALKALI HALIDE SINGLE CRYSTALS  

E-Print Network (OSTI)

Nuclear Engineering Program, University of Illinois, Urbana, Illinois This work was supported by the Director, Office of Energy Research,

Olander, D.R.

2014-01-01T23:59:59.000Z

350

E-Print Network 3.0 - alkali sodic soil Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

; Renewable Energy 29 ECOSYSTEM ECOLOGY The effects of tree establishment on water and salt dynamics Summary: of sodic soils in the Caspian region and India (Mishra and...

351

Potentials for Fuel Cells in Refineries and Chlor-Alkali Plants  

E-Print Network (OSTI)

. The concept is that the fuel cell would use a by-product hydrogen stream as its fuel. The c()nv?~ntional gas turbine combined cycle (GTCC) technology was included in the ana lysi s because it is the 'TIost li kel y system .~ga ins t whi ch the fuel cells... Alkaline Combi ned Steam Fuel Cells Fuel Cells Fuel Cells Cycle Boiler Na turaI ga s Na turaI Na turaI Natura I or hydrogen Gas Hydrogen*- Gas Gas 379 322 316 523 203 50 50 50 SO 0 100,000 BO,OOO 0 150,000 150,000 45 53 54 33 0 30 27 0 32...

Altseimer, J. H.; Roach, F.

352

E-Print Network 3.0 - alkali-transition metal borohydrides Sample...  

NLE Websites -- All DOE Office Websites (Extended Search)

alkaline earth metal) ... Source: DOE Office of Energy Efficiency and Renewable Energy, Hydrogen, Fuel Cells and Infrastructure Technologies Program Collection: Energy Storage,...

353

Coccidioides immitis vaccine: potential of an alkali-soluble, water-soluble cell wall antigen  

E-Print Network (OSTI)

consistently fai led to protect recipients against chal I enge (3, 29) . Vaccine trials in coccidioldcmycosis have been conducted by Kong (26, 29), Levine (3I, 35), Pappagi anis (38, 39, 4I, 42) and others (4, 5, 7-IO, 20, 45, 53). These investigators... stable attenuated mutant of C. immitis led investigators to assess the efficacy of killed mycelial phase (20, 31, 32, 41) and spherule phase (26, 31, 32, 53) cells as potential vaccines. Converse et al. (9) inoculated monkeys subcutaneously with 10...

Lecara, Grace

1980-01-01T23:59:59.000Z

354

Alkali Pretreatment for Improvement of Biogas and Ethanol Production from Different Waste Parts of Pine Tree  

Science Journals Connector (OSTI)

Among the untreated parts, the highest amount of biomethane production was obtained from needle leaves, which was 213 mL/(gVS). ...

Peyman Salehian; Keikhosro Karimi

2012-12-18T23:59:59.000Z

355

Transformation of Alkali Metals during Pyrolysis and Gasification of a Lignite  

Science Journals Connector (OSTI)

North China has large reserves of low rank coal deposits such as lignite that are suitable to be used in fluidized-bed gasification. ... Influence of Temperature on the Release of Inorganic Species from Victorian Brown Coals and German Lignites under CO2 Gasification Conditions ...

Xiaofang Wei; Jiejie Huang; Tiefeng Liu; Yitian Fang; Yang Wang

2008-04-17T23:59:59.000Z

356

A grid-level alkali liquid metal battery recycling process : design, implementation, and characterization  

E-Print Network (OSTI)

The application of liquid metal batteries for large scale grid-level energy storage is being enabled through the development of research conducted at the Massachusetts Institute of Technology (MIT) in 2006. A recycling ...

Thomas, Dale Arlington, III

2014-01-01T23:59:59.000Z

357

E-Print Network 3.0 - alkali metal oxides Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

, sodium carbide, turpentine, finely divided metals Calcium water, carbon dioxide, carbon tetrachloride... , and chlorinated hydrocarbons Carbon, activated calcium...

358

E-Print Network 3.0 - alkali metal concentrations Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

, sodium carbide, turpentine, finely divided metals Calcium water, carbon dioxide, carbon tetrachloride Source: Prentiss, Mara - Department of Physics, Harvard University...

359

Experimental Study on the Combustion Characteristics and Alkali Transformation Behavior of Straw  

Science Journals Connector (OSTI)

School of Electric Power, South China University of Technology, Guangzhou 510640, Peoples Republic of China ... The sample was contained in a ceramic container with a mass density of less than 0.1 g/cm2 to ensure even heating and low heat-transfer resistance. ... When the parameters, such as the elementary composition of the fuel and air, temperature, and pressure, are inputted, FactSage will search the species including these elements from the database. ...

Yanfen Liao; Guang Yang; Xiaoqian Ma

2012-01-03T23:59:59.000Z

360

A computational linear elastic fracture mechanics-based model for alkali-silica reaction  

E-Print Network (OSTI)

. It is visible through superficial cracking and expansion. Resistance to traction is also affected. The ASR gels after. The simple rule used to sum the contributions of different elementary volumes to macroscopic- sponding to the accelerated expansion test ASTM C 1260. The decrease of the concrete's resistance and its

Paris-Sud XI, Université de

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


361

PERMANENT MAGNETS UNDER IRRADIATION AND RADIOACTIVE ALKALI ION BEAM DEVELOPMENT FOR SPIRAL 1  

E-Print Network (OSTI)

produced by nuclear reactions are released from the high temperature target (2000°C), effuse through a cold transfer tube up to a multi-charged ECR ion source. After extraction from the ECRIS at low energy ( 34 q of high-energy fragmentation as well as the ISOL methods for exploring the structure of nuclei far from

Boyer, Edmond

362

E-Print Network 3.0 - alkali gabbros Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

whereas a crosscut- ting gabbro... with the time of crystallization of the younger titanite component. Gabbro (sample C-99-46) The sample... -47, and c zircon data for gabbro...

363

Metal-insulator transition in rare-gas-alkali-metal thin films  

Science Journals Connector (OSTI)

We report measurements of the conductivity and optical absorption in KrRb and XeCs thin films through the composition range spanning the metal-insulator transition. It is argued from chemical properties of the constituents that the conductivity loss must take the form of a percolative transition. In agreement with this assignment, the optical absorption shows no discontinuous or even marked change through the transitions. "Metallic" and "excitonic" features both persist on each side of the observed transitions in the two systems. The resistivity in metal-rich alloys yields residual resistivities for rare-gas impurities close to the values expected of vacancies, and the resistivity transitions at ? 75 at.% rare gas conform rather closely to the prediction of percolation theory.

D. J. Phelps and C. P. Flynn

1976-12-15T23:59:59.000Z

364

Geothermal Reservoir Assessment Case Study, Northern Basin and...  

Open Energy Info (EERE)

Province, Northern Dixie Valley, Nevada Abstract NA Authors Elaine J. Bell, Lawrence T. Larson and Russell W. Juncal Published U.S. Department of Energy, 1980 Report Number...

365

E-Print Network 3.0 - adolescent transition study Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

Michigan State University Collection: Biology and Medicine 9 Linking Trauma & Substance Abuse: References Amaro, H., Larson, M. J., Gampel, J. (2005). Racialethnic differences in...

366

E-Print Network 3.0 - ancient dna pig Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

and the spread of the Neolithic into Europe... ,*, Greger Larson b , Kimberley Owens c , Keith Dobney d , Beth Shapiro e a ... Source: Shapiro, Beth - Department of Biology,...

367

--No Title--  

NLE Websites -- All DOE Office Websites (Extended Search)

communication and ground water planning, Ground Water, 46(2), 174-182. Todd West, Katherine Dunphy-Guzman, Amy Sun, Len Malczynski, David Reichmuth, Richard Larson, James...

368

Optimization Online - All Areas Submissions - June 2011  

E-Print Network (OSTI)

Jeffrey Larson, Stefan M. Wild. Applications ... Aharon Ben-Tal, Dick Den Hertog. Nonlinear ... Feng Niu, Benjamin Recht, Re Christopher, Stephen Wright.

369

Council's Regional Hydropower Potential Scoping  

E-Print Network (OSTI)

Hydroelectric Association Lisa Larson, HDR Rick Miller, HDR Discussion of analysis Reaction? 2 #12;Objective Northwest Hydroelectric Association HDR, Inc. MWH Global Black & Veatch Bonneville Environmental

370

E-Print Network 3.0 - aerated sodium chloride Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

CONTROL SYSTEM FOR Summary: from this project: Aeration of large-scale municipal wastewater treatment plants: state of the art... , Diego Rosso, Lory E. Larson, Michael K....

371

Building America Expert Meeting Report: Windows Options for New...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Charlie Curcija of Lawrence Berkeley National Laboratory, Jim Larson of Cardinal Glass Industries, Peter Yost of Building Green, Peter Baker of Building Science Corporation,...

372

Photo Filler  

Science Journals Connector (OSTI)

In the August 4, 2011, issue, the photograph on page 453 should have been attributed to Merlin Larson, M.D. rather than Merlin Lawson, M.D. We regret the error. In the August 4, 2011, issue, the photograph on page 453 should have been attributed to Merlin Larson, M.D., rather than Merlin Lawson, M.D. We regret the error.

2011-08-25T23:59:59.000Z

373

Scientific Utility of the Signal-to-Noise Ratio (SNR) Reported by Geodetic GPS Receivers  

E-Print Network (OSTI)

and is a past president of the ION. Kristine M. Larson received a B.A. in Engineering Sciences from Harvard Bilich*, Penina Axelrad and Kristine M. Larson University of Colorado, Dept. of Aerospace Engineering received her B.S. in geophysics (1999) from the University of Texas and Ph.D. in aerospace engineering

Larson, Kristine

374

Fate of Sulfur, Chlorine, Alkali Metal, and Vanadium Species during High-Temperature Gasification of Canadian Tar Sand Products  

Science Journals Connector (OSTI)

Co-feed of alternative fuels, e.g., petcoke, gains increasing importance for energy conversion in not only Germany but also worldwide. ... The aim of this work was to obtain detailed information on the influence of fuel composition of the refinery product line tar sand, bitumen, and petcoke in comparison to the standard fuel hard coal on the release of sodium, potassium, chlorine, sulfur, and vanadium species during high-temperature gasification. ... In addition to the pure fuels, blends of hard coal and petcoke were gasified in lab-scale experiments in a helium/oxygen atmosphere at 1500 C. ...

Marc Blsing; Kaveh Nazeri; Michael Mller

2014-10-01T23:59:59.000Z

375

Biomass and Coal Fly Ash in Concrete: Strength, Durability, Microstructure, Quantitative Kinetics of Pozzolanic Reaction and Alkali Silica Reaction Investigations.  

E-Print Network (OSTI)

?? Biomass represents an important sustainable energy resource, with biomass-coal cofiring representing among the most effective and cost efficient CO2 reduction strategies. Fly ash generated (more)

Wang, Shuangzhen

2007-01-01T23:59:59.000Z

376

Biomass and Coal Fly Ash in Concrete: Strength, Durability, Microstructure, Quantitative Kinetics of Pozzolanic Reaction and Alkali Silica Reaction Investigations.  

E-Print Network (OSTI)

??Biomass represents an important sustainable energy resource, with biomass-coal cofiring representing among the most effective and cost efficient CO2 reduction strategies. Fly ash generated during (more)

Wang, Shuangzhen 1971-

2007-01-01T23:59:59.000Z

377

Fate of Alkali Metals and Phosphorus of Rapeseed Cake in Circulating Fluidized Bed Boiler Part 1: Cocombustion with Wood  

Science Journals Connector (OSTI)

Research and Development Department, Foster Wheeler Energia Oy, Varkaus, Finland ... The aim of this work was to study the release of K from simple systems to obtain information on the retaining effects of the elements Ca, Si, and P. Further objectives were to study the effects of temp., the presence of H2O vapor, the speciation of K and Ca, and the sample size on the release rate of K from the simple ternary systems K-Ca-Si and K-Ca-P. ... Selected samples of the K-Ca-Si and K-Ca-P mixts., before and after the heat treatment, were studied by SEM in combination with EDX to study the morphol. ...

Patrycja Piotrowska; Maria Zevenhoven; Kent Davidsson; Mikko Hupa; Lars-Erik mand; Vesna Baris?ic?; Edgardo Coda Zabetta

2009-11-18T23:59:59.000Z

378

Fate of Alkali Metals and Phosphorus of Rapeseed Cake in Circulating Fluidized Bed Boiler Part 2: Cocombustion with Coal  

Science Journals Connector (OSTI)

R&D Department, Foster Wheeler Energia Oy, Varkaus, Finland ... The aim of this work was to study the release of K from simple systems to obtain information on the retaining effects of the elements Ca, Si, and P. Further objectives were to study the effects of temp., the presence of H2O vapor, the speciation of K and Ca, and the sample size on the release rate of K from the simple ternary systems K-Ca-Si and K-Ca-P. ... Selected samples of the K-Ca-Si and K-Ca-P mixts., before and after the heat treatment, were studied by SEM in combination with EDX to study the morphol. ...

Patrycja Piotrowska; Maria Zevenhoven; Kent Davidsson; Mikko Hupa; Lars-Erik mand; Vesna Baris?ic?; Edgardo Coda Zabetta

2010-07-22T23:59:59.000Z

379

Nanosized Alkali-Metal-Doped Ethoxotitanate Clusters Yang Chen, Elzbieta Trzop, Anna Makal, Jesse D. Sokolow, and Philip Coppens*  

E-Print Network (OSTI)

describe here related complexes doped with sodium and lithium and a new "pure" Ti28 cluster, which unlike the previously reported polyoxotitanate complex Ti28O40(Ot Bu)20(OAc)12 14 (Ot Bu = tert-butoxide; OAc = acetate of this unexpected product, we added sodium acetate to the reaction mixture and obtained Ti28+NaO38(OEt)39

Coppens, Philip

380

Characterization of selective binding of alkali cations with carboxylate by x-ray absorption spectroscopy of liquid microjets  

E-Print Network (OSTI)

sodium acetate, and lithium acetate revealing distinctpotassium, and lithium with acetate and formate anions informate and acetate solutions containing lithium, sodium,

Uejio, Janel S.

2008-01-01T23:59:59.000Z

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


381

{sup 3}He polarization-dependent EPR frequency shifts of alkali-metal-{sup 3}He pairs  

SciTech Connect

We present temperature-dependent measurements of the EPR frequency shifts for Na, K, and Rb interacting with polarized {sup 3}He. K and Na frequency shifts were measured via comparison with Rb frequency shifts (well known at low temperatures) in Na-Rb-{sup 3}He and K-Rb-{sup 3}He spin-exchange cells. The lowered Rb vapor pressure of these 'hybrid' spin-exchange cells also allowed us to extend the measured temperature dependence of the Rb EPR frequency shifts up to 350 deg. C. This work presents measurements of the EPR frequency shift for Na in {sup 3}He and significantly extends the temperature range of previous Rb and K EPR frequency shift measurements. These results are critical to the performance of accurate {sup 3}He EPR polarimetry in spin-exchange cells.

Babcock, Earl; Walker, Thad G. [Department of Physics, University of Wisconsin-Madison, Madison, Wisconsin 53706 (United States); Nelson, Ian A. [Department of Human Oncology, University of Wisconsin Medical School, Madison, Wisconsin 53792 (United States); Kadlecek, Steve [Department of Radiology, University of Pennsylvania, Philadelpia, Pennsylvania 19104 (United States)

2005-01-01T23:59:59.000Z

382

Performance-based approach to evaluate alkali-silica reaction potential of aggregate and concrete using dilatometer method  

E-Print Network (OSTI)

....................................................... 27 Aggregate Testing................................................................... 28 Cement-Aggregate Combination Testing ............................... 31 Gel Identification............................................................. 110 Chemistry of Pore Solution in Concrete ...................................... 113 Solubility of ASR Gel.................................................................. 113 Determination of Aggregate...

Shon, Chang Seon

2009-05-15T23:59:59.000Z

383

Enthalpy of formation of forsterite, enstatite, akermanite, monticellite and merwinite at 1073 K determined by alkali borate solution calorimetry  

Science Journals Connector (OSTI)

Enthalpies of solution of synthetic enstatite (Mg2Si2O6), forsterite (Mg2SiO4), akermanite (Ca2MgSi2O7), monticellite (CaMgSiO4), and merwinite (Ca3MgSi2O8) and their component oxides were determined in eutectic (Li, Na)BO2 at 1073 K. Resulting enthalpies of formation at 1073 are enstatite: ?8.10 0.42 kcal; forsterite: ?14.23 0.45 kcal; akermanite: ?42.60 0.39 kcal; monticellite: ?25.05 0.41 kcal; and merwinite: ?51.10 0.49 kcal. The value for the synthetic monticellite of composition Mo.965Fo.035 was corrected slightly for non-stoichiometry based on experimental monticellite-forsterite phase equilibrium relations. The enthalpies of formation of enstatite and forsterite are somewhat less negative than yielded by several other solution calorimetric studies but are in good agreement with the recent Pb2B2O5 solution calorimetry of Kiselevaet al. (1979), and are in good agreement with values to be derived from reliable phase equilibrium data in the system MgO-Al2O3-SiO2. The enthalpies of formation of akermanite, monticellite and merwinite are all much less negative than values tabulated by robieet al. (1978) and helgesonet al. (1978) but are shown to be compatible with reliable phase equilibrium data for the system CaO-MgO-SiO2, whereas the tabulated values are not. Several methods of analysis yield an entropy of monticellite at 1000 K of 69.9 0.2 cal/K.

C. Brousse; R.C. Newton; O.J. Kleppa

1984-01-01T23:59:59.000Z

384

Use of fluidized bed combustion by-products for liners and alkali substitutes. Technical report, March 1--May 31, 1995  

SciTech Connect

Fluidized Bed Combustion of coal eliminates most emissions of S and N oxides but produces sizable volumes of a solid residue that EPA may require to be placed in capped and lined landfills. Fluidized Bed Combustors are one of the most promising growth markets for Illinois coal and imposing cap and liner requirements may make the technology uneconomic. Fluidized Bed residues are cementlike and when mixed with soil, produce a material as impermeable as the clay liners used at landfills. This project will demonstrate that the residues can be mixed with soils by regular construction equipment and used in place of clays as liner material. The demonstration cap will cover an area of 7 acres and will prevent water infiltration into acid producing material. Baseline studies of Briar Creek indicate that the water is now highly degraded by acid drainage. Construction delays have enhanced the data collected on Briar Creek by allowing monitoring to continue through major seasonal changes without any effects attributable to the FBC ash. Materials needed to place the wells and lysimeters have been obtained. A contractor will build and deliver a mobile foam generator and spray to the field to demonstrate fugitive dust control from FBC fly ash (dust problem is one key barrier to more widespread use of FBC ash).

Paul, B.C.; Esling, S. [Southern Illinois Univ., Carbondale, IL (United States); Pisani, F. [Illinois Abandoned Mined Lands reclamation Council (United States); Wells, T. [Archer-Daniels-Midland Co., Minneapolis, MN (United States)

1995-12-31T23:59:59.000Z

385

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

E-Print Network (OSTI)

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

Zevenhoven, Ron

386

Selective Recognition of an Alkali Halide Contact Joseph M. Mahoney, Alicia M. Beatty, and Bradley D. Smith*  

E-Print Network (OSTI)

, and Bradley D. Smith* Department of Chemistry and Biochemistry UniVersity of Notre Dame, Notre Dame, Indiana

Smith, Bradley D.

387

A computational linear elastic fracture mechanics-based model for alkali-silica reaction Laurent Charpin,a  

E-Print Network (OSTI)

/or superficial cracking of macro- scopic parts. Resistance to traction is much more affected than resistance with existing ones. Then follow the description of the considered elementary volume and the computation the contributions of different elementary volumes to macroscopic expansion comes next. Later, we explain which

Boyer, Edmond

388

Geochronological, geochemical and SrNdHf isotopic constraints on the origin of the Cretaceous intraplate volcanism in West Qinling, Central China: Implications for asthenospherelithosphere interaction  

Science Journals Connector (OSTI)

Abstract This paper reports new zircon LA-ICP-MS \\{UPb\\} age and Lu-Hf isotopes, laser-fusion 40Ar/39Ar age, mineral chemistry, bulk-rock major and trace element, and SrNd isotope data from intraplate volcanic rocks in the Duofuntun Area, West Qinling. It was dated at 105.80.9Ma (UPb Zircon) and 1032Ma (matrix glass laser-fusion 40Ar/39Ar dating). The Duofuntun Volcanic Rocks (DVR) are dominantly composed of alkali basalts with minor basanites and basaltic andesites. Some evolved samples of the DVR underwent a variable fractionation of olivine, clinopyroxene, plagioclase, FeTi oxide, Cr-rich spinel and apatite. Chondrite-normalized rare earth element and primitive mantle-normalized trace element patterns of the DVR remarkably resemble those of oceanic island basalts (OIB). Nearly all the alkali basalts show positive Nb, Ta and Ti anomalies and negative Rb, Th and P anomalies, whereas basanites do not display positive Ti anomalies. Nearly all the samples show marked negative Rb and K anomalies relative to their neighbouring elements on a primitive mantle normalized trace element diagram. 87Sr/86Sr(i) and 143Nd/144Nd(i) ratios for all the mafic samples also show an OIB affinity, covering a range of 0.7032640.705032 and 0.5127180.512873, respectively. Several lines of evidence indicate that both garnet and amphibole play a key role for the genesis of the DVR. The melt segregation PT conditions in the source region, around 1371C at 1.983.25GPa, combined with trace element collectively suggest a polybaric melting process during the formation of the DVR. The non-modal batch partial melting modelling result indicates the DVR were generated by small-degree polybaric partial melting of amphibole-bearing spinel peridotites (ca. 4%) and amphibole-bearing garnet peridotites (ca. 0.7%). We suggest the DVR were not formed in a plume. Rather, they originated by the interaction between the upwelling asthenosphere, which might provide both materials and heat flux, and hydrous mineral-bearing (amphibole) lithosphere during lithospheric extension.

Xiao-Wei Li; Xuan-Xue Mo; Xue-Hui Yu; Yi Ding; Xiong-Fei Huang; Ping Wei; Wen-Yan He

2013-01-01T23:59:59.000Z

389

DMFA Logo AMC Logo Also available at http://amc.imfm.si  

E-Print Network (OSTI)

, Richmond, VA 23284-2014 Jasper Souffriau Applied Mathematics, Computer Science and Statistics, Ghent Larson), Jasper.Souffriau@UGent.be (Jasper Souffriau), Nicolas.VanCleemput@UGent.be (Nico Van Cleemput

Larson, Craig E.

390

Contributing Storage using the Transparent File System  

E-Print Network (OSTI)

resources on their personal computers to a shared pool. Applications such as SETI@home, Folding@home Folding@home [Larson et al. 2002] and anonymous publish- ing and content distribution such as Freenet

Berger, Emery

391

Industry backs 'downsizing' public research, but not joint projects  

Science Journals Connector (OSTI)

... Larson says that the two programmes may represent up to Plugging in? Supporters of the electric car say that federal funds provide fuel for high-risk ventures. half industry's spending ...

Colin Macilwain

1995-09-07T23:59:59.000Z

392

April 2012 Julia Allen Jones  

E-Print Network (OSTI)

L. Larson, Evan S. Miles, Kathleen M. Miles, Stephen Sebestyen, Adam T. Spargo, Asa Stone, James M, David W. Clow, Clifford N. Dahm, Kelly Elder, Chelcy R. Ford, Nancy B. Grimm, Donald L. Henshaw, Kelli

Kurapov, Alexander

393

Policy Flash 2013-65 | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Policy Flash 2013-65 Policy Flash 2013-65 Questions concerning this policy flash should be directed to Mike Larson of the Office of Acquisition and Project Management, Strategic...

394

Development of mixed-conifer forest in Hokkaido, northern Japan, following a catastrophic windstorm: A parallel model of plant succession  

Science Journals Connector (OSTI)

Structural development of mixed-species forests tend to take similar patterns in temperate forests (Oliver 1981, Oliver and Larson 1990) ... population dynamics and stand development of a mixed-conifer forest in ...

Akira Osawa

1992-01-01T23:59:59.000Z

395

2002 Geological Society of America. For permission to copy, contact Copyright Permissions, GSA, or editing@geosociety.org. Geology; January 2002; v. 30; no. 1; p. 6770; 3 figures. 67  

E-Print Network (OSTI)

-Cretaceous tectonic evolution of the Tongareva triple junction in the southwestern Pacific Basin Roger L. Larson a magnetic anomaly 34 bight. It is identified by the inter- section of nearly orthogonal abyssal hill fabrics

Clayton, Robert W.

396

ENVIROISSUES PAGE  

NLE Websites -- All DOE Office Websites (Extended Search)

Rick LE:aumont Local Government Meynard ?1hU1a Pam Laen RoDer Larson Jerry Peltier Jim Curdy Bob Parks Tribal GoVcmm9nt Russell Jim Patrick Sobotta P"blic Health...

397

--No Title--  

NLE Websites -- All DOE Office Websites (Extended Search)

Monday, April 6, 2009 11:00 am Iran Thomas Auditorium, 8600 "Atomistic and coarse-grained molecular dynamics simulations of polymers and lipids" Ronald G. Larson Department of...

398

ORIGINAL ARTICLE GPS snow sensing: results from the EarthScope Plate Boundary  

E-Print Network (OSTI)

, University of Colorado, Boulder, Boulder, CO 80309-0429, USA e-mail: Kristinem.larson@gmail.com 123 GPS Solut and by water supply managers to predict/mitigate drought and flood conditions. Existing in situ snow sensors

Larson, Kristine

399

Reaction Wood: Its Structure and Function  

Science Journals Connector (OSTI)

...WOOD AND OPPOSITE WOOD, TAPPI 52 : 2170 ( 1969 ). LEE...MATERIALS, ARKIV FOR KEMI 12 : 437 ( 1958 ). MOROHOSHI, N...1965). 17. P. Larson, Tappi 52, 2170 (1969). 18...Lindgren, Ark. Kemi 12, 437 (1958); C. L. Lee...

G. Scurfield

1973-02-16T23:59:59.000Z

400

Ecosystem Processes and Human Influences Regulate Streamflow Response to Climate Change at Long-Term Ecological Research Sites  

E-Print Network (OSTI)

. Larson, Evan S. Miles, Kathleen M. Miles, Stephen D. Sebestyen, Adam T. Spargo, Asa B. Stone, James M, CHelCy r. Ford, nanCy b. GriMM, donald l. HensHaW, Kelli l. larson, evan s. Miles, KatHleen M. Miles W. Clow, Clifford N. Dahm, Kelly Elder, Chelcy R. Ford, Nancy B. Grimm, Donald L. Henshaw, Kelli L

Williams, Mark W.

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


401

E-Print Network 3.0 - aqueous ionic melts Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

Environmental Sciences and Ecology 50 doi:10.1016j.gca.2004.09.025 Rare earth diffusion kinetics in garnet: Experimental studies and applications Summary: in garnet as a function...

402

Strategies for enhancing the effectiveness of metagenomic-based enzyme discovery in lignocellulytic microbial communities  

E-Print Network (OSTI)

St. Louis, MO), (2) OL- Organosolv lignin, propionate (alkali lignin (AL), organosolv lignin (OL), and Indulin AT (Compost Compost Feedstock a Organosolv lignin Alkali lignin

DeAngelis, K.M.

2010-01-01T23:59:59.000Z

403

arXiv:1108.3866v1[physics.atom-ph]18Aug2011 Universalities in ultracold reactions of alkali polar molecules  

E-Print Network (OSTI)

statistics plays a strong role. An ultracold gas of bosonic molecules can lead to Bose-Einstein condensation and an ultracold sample of fermionic molecules can lead to a Degenerate Fermi gas. Thirdly, two polar molecules can University, 198904, Russia interactions in a gas and depends strongly on the ap- plied electric field [16

Kotochigova, Svetlana

404

Fluid origins, paths, and fluid-rock reactions at convergent margins, using halogens, Cl stable isotopes, and alkali metals as geochemical tracers  

E-Print Network (OSTI)

Carbonate chimneys with brucite, blue amphiboles, phengite,partition coefficients. One brucite sample separated from ahigh ? 37 Cl value in the brucite separate sample probably

Wei, Wei

2007-01-01T23:59:59.000Z

405

Water adsorption, solvation and deliquescence of alkali halide thin films on SiO2 studied by ambient pressure X-ray photoelectron spectroscopy  

SciTech Connect

The adsorption of water on KBr thin films evaporated onto SiO2 was investigated as a function of relative humidity (RH) by ambient pressure X-ray photoelectron spectroscopy. At 30percent RH adsorbed water reaches a coverage of approximately one monolayer. As the humidity continues to increase, the coverage of water remains constant or increases very slowly until 60percent RH, followed by a rapid increase up to 100percent RH. At low RH a significant number of the Br atoms are lost due to irradiation damage. With increasing humidity solvation increases ion mobility and gives rise to a partial recovery of the Br/K ratio. Above 60percent RH the increase of the Br/K ratio accelerates. Above the deliquescence point (85percent RH), the thickness of the water layer continues to increase and reaches more than three layers near saturation. The enhancement of the Br/K ratio at this stage is roughly a factor 2.3 on a 0.5 nm KBr film, indicating a strong preferential segregation of Br ions to the surface of the thin saline solution on SiO2.

Arima, Kenta; Jiang, Peng; Deng, Xingyi; Bluhm, Henrik; Salmeron, Miquel

2010-03-31T23:59:59.000Z

406

Many-body calculations of the hyperfine interaction of some excited states of alkali atoms, using approximate Brueckner or natural orbitals  

Science Journals Connector (OSTI)

The theory of maximum-overlap or Brueckner orbitals and of natural Orbitals is reviewed ... . A technique is described to calculate approximate Brueckner or natural orbitals for systems with a...d states, which i...

Ingvar Lindgren; Johannes Lindgren

1976-01-01T23:59:59.000Z

407

Impact of Municipal Solid Waste (MSW) Quality on the Behavior of Alkali Metals and Trace Elements during Combustion: A Thermodynamic Equilibrium Analysis  

Science Journals Connector (OSTI)

Light, thermal- and bacterial-resistant, and inexpensive leathers, especially in the footwear industry, are obtained by the Cr tanning method. ... The selected waste items are representing the major combustible fractions found in MSW, i.e. paper, plastic, textile, and biogenic materials (both food and biomass), but also the other waste fraction (a mixed and poorly defined fraction). ... Pedersen et al.(6) studies six different waste fractions separately under different operational conditions in a full-scale incinerator: NaCl (road salt), household batteries, automotive shredder waste (rubber and plastics), Cu?Cr?As (CCA)-impregnated wood, PVC, and shoes (leather mainly). ...

Michae?l Becidan; Lars Srum; Daniel Lindberg

2010-05-21T23:59:59.000Z

408

MOSSBAUER STUDY OF Fe(ll) DOPED ALKALI CHLORIDE CRYSTALS AND DEFECT STRUCTURE Y. Takashima, N. Kai, T. Nishida and L. Chandler*  

E-Print Network (OSTI)

to the a-hematite species. This means that excess iron in the sample reacted with a small amount of oxygen for a lithium ion located in a perfectly cubic site with no vacancies nearby. This is justified by the fact that there is no change in the X-ray dif- fraction lines between the pure and doped lithium chlorides. Although

Paris-Sud XI, Université de

409

Photometric Investigations of Alkali Metals in Hydrogen Flame Gases. II. The Study of Excess Concentrations of Hydrogen Atoms in Burnt Gas Mixtures  

Science Journals Connector (OSTI)

...Flame Gases. II. The Study of Excess Concentrations of Hydrogen...concentrations are well in excess of those expected from thermodynamic...gases. The amount of free lithium is modified by the balanced...or its compounds (a large excess over the sodium) are added...

1956-01-01T23:59:59.000Z

410

Synthesis and Characterization of Single-Crystalline Alkali Titanate Cheng-Yan Xu,, Qi Zhang, Han Zhang,| Liang Zhen, Jie Tang,, and Lu-Chang Qin*,,|  

E-Print Network (OSTI)

a challenge, except for the template method. Recently, sodium titanate nanowires were produced by hydrothermal13 and K2Ti8O17 nanowires have also been successfully prepared by a hydrothermal reaction between Ti. The processing parameters are almost the same, except that the reaction temperature was set at 800 °C, as has

Qin, Lu-Chang

411

Hydroxyl Ion Migration, Chemical Reactions, Water Transport and Other Effects As Optimizing Parameters In Cross-, Co- And Countercurrently Operated Membrane Cells For The Chlor/Alkali Electrolysis  

Science Journals Connector (OSTI)

A mathematical model describing a chloralkali-electrolysis in membrane cells including unusual flow pattern is presented. This paper discusses several influences like chemical reactions in the anolyte compartm...

K. H. Simmrock

1984-01-01T23:59:59.000Z

412

Quantitative assessment of alkali-reactive aggregate mineral content through XRD using polished sections as a supplementary tool to RILEM AAR-1 (petrographic method)  

SciTech Connect

The mineral content of 5 aggregate samples from 4 different countries, including reactive and non-reactive aggregate types, was assessed quantitatively by X-ray diffraction (XRD) using polished sections. Additionally, electron probe microanalyzer (EPMA) mapping and cathodoluminescence (CL) were used to characterize the opal-CT identified in one of the aggregate samples. Critical review of results from polished sections against traditionally powdered specimen has demonstrated that for fine-grained rocks without preferred orientation the assessment of mineral content by XRD using polished sections may represent an advantage over traditional powder specimens. Comparison of data on mineral content and silica speciation with expansion data from PARTNER project confirmed that the presence of opal-CT plays an important role in the reactivity of one of the studied aggregates. Used as a complementary tool to RILEM AAR-1, the methodology suggested in this paper has the potential to improve the strength of the petrographic method.

Castro, Nelia, E-mail: nelia.castro@ntnu.no [Norwegian University of Science and Technology (NTNU), Department of Geology and Mineral Resources Engineering, Sem Saelands vei 1, N-7491 Trondheim (Norway)] [Norwegian University of Science and Technology (NTNU), Department of Geology and Mineral Resources Engineering, Sem Saelands vei 1, N-7491 Trondheim (Norway); Sorensen, Bjorn E. [Norwegian University of Science and Technology (NTNU), Department of Geology and Mineral Resources Engineering, Sem Saelands vei 1, N-7491 Trondheim (Norway)] [Norwegian University of Science and Technology (NTNU), Department of Geology and Mineral Resources Engineering, Sem Saelands vei 1, N-7491 Trondheim (Norway); Broekmans, Maarten A.T.M. [Geological Survey of Norway, Department of Industrial Minerals and Metals, PO Box 6315 Sluppen, N-7491 Trondheim (Norway)

2012-11-15T23:59:59.000Z

413

Structural Evaluation and Solution Integrity of Alkali Metal Salt Complexes of the Manganese 12-Metallacrown-4 (12-MC-4) Structural Type  

E-Print Network (OSTI)

of crystalline salts (LiCl2)[12-MCMn(III)N(shi)-4]- ([(LiCl2),1]-), (Li(trifluoro- acetate))[12-MCMn(III)N(shi)-4:1 metal:metallacrown adducts with lithium and 2:1 metal:metallacrown complexes with sodium and potassium

Gibney, Brian R.

414

Enhancement of specific heat capacity of high-temperature silica-nanofluids synthesized in alkali chloride salt eutectics for solar thermal-energy  

E-Print Network (OSTI)

chloride salt eutectics for solar thermal-energy storage applications Donghyun Shin, Debjyoti Banerjee for the anoma- lous enhancement of thermal conductivity over that of the neat solvent. Eastman et al. [5] reported thermal conductivity enhance- ment of 30% and 60% for water based nanofluids of Al2O3 and Cu

Banerjee, Debjyoti

415

Synthesis of a Novel Macroporous Silica-Calix[4]arene-Crown Polymeric Composite and Its Adsorption for Alkali Metals and Alkaline-Earth Metals  

Science Journals Connector (OSTI)

They are released to the environment usually from the natural process of radioactivity, nuclear plant accidents, nuclear weapons testing, and leakage from radioactive waste storage facilities and a variety of wastes associated with the reprocessing of nuclear spent fuel (NSF). ... cycle was developed as a part of a collaborative effort between the Khlopin Ra Institute (KRI) and the Idaho National Engineering and Environmental Lab. ...

Anyun Zhang; Qihui Hu; Zhifang Chai

2010-01-19T23:59:59.000Z

416

Use of fluidized bed combustion by-products for liners and alkali substitutes. Technical report, December 1, 1994--February 28, 1995  

SciTech Connect

Fluidized Bed Combustion (FBC) of coal eliminates most emissions of sulfur and nitrogen oxides, but produces sizable volumes of a solid residue that EPA may require to be placed in capped and lined landfills. Fluidized Bed Combustors are one of the most promising growth markets for Illinois coal and imposing cap and liner requirements would render the technology economically inviable. Fluidized Bed residues are cement-like and when mixed with soil produce a material as impermeable as the clay liners used at landfills. This project will demonstrate that Fluidized Bed Combustion Residues can be mixed with soils by regular construction equipment and used in place of clays as a liner material. The demonstration cap will cover an area of seven acres, and will prevent water infiltration into acid producing material. Baseline studies of Briar Creek indicate that the water is now highly degraded by acid drainage. Construction delays have enhanced the data collected on Briar Creek by allowing monitoring to continue through major seasonal changes without any effects attributable to the FBC ash. The materials needed to place the wells and lysimeters as soon as the weather improves this spring have been purchased and delivered. Also experiments suggest that it may be possible to control dust by foam conditioning the FBC ash at the power station.

Paul, B.C.; Esling, S. [Southern Illinois Univ., Carbondale, IL (United States); Pisani, F. [Illinois Abandoned Mined Lands Reclamation Council, IL (United States); Wells, T. [Archer-Daniels-Midland Co., Minneapolis, MN (United States)

1996-03-01T23:59:59.000Z

417

Testing and verification of granular-bed filters for the removal of particulate and alkalis. Eleventh quarterly project report, April 1, 1983-June 30, 1983  

SciTech Connect

The Westinghouse Electric Corporation with Ducon, Inc. and Burns and Roe, Inc. are conducting a test and evaluation program of a Granular-Bed Filter (GBF) for gas-cleaning applications in pressurized fluidized-bed combustion processes. This work is funded by DOE PRDA for Exploratory Research, Development, Testing and Evaluation of Systems or Devices for Hot Gas Clean-up. This report describes the status of the testing of the subpilot scale GBF unit under simulated Pressurized Fluidized-Bed Combustion (PFBC) conditions through Phase IV and the design of a bench-scale, single-bed cylindrical element that will be utilized in Test Phase V.

None

1983-01-01T23:59:59.000Z

418

REPORT OF THE SURFACE SCIENCE WORKSHOP  

E-Print Network (OSTI)

alkali, fluorine, water electrolysis) Problem: to reducepermit the photo- electrolysis of water with the production

Somorjai, G.A.

2010-01-01T23:59:59.000Z

419

Technical Report Documentation Page 1. Report No.  

E-Print Network (OSTI)

deterioration. 17. Key Words alkali-silica, bridges, concrete, damage, deterioration, ettringite, pullout

Texas at Austin, University of

420

Project Summary Report 0-4069-S The University of Texas at Austin  

E-Print Network (OSTI)

by two expansive distress mechanisms: Alkali-Silica Reaction (ASR) and De- layed Ettringite Formation

Texas at Austin, University of

Note: This page contains sample records for the topic "larson garnet alkali" 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

Clean Cities: Honolulu Clean Cities coalition  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Honolulu Clean Cities Coalition Honolulu Clean Cities Coalition The Honolulu Clean Cities coalition works with vehicle fleets, fuel providers, community leaders, and other stakeholders to reduce petroleum use in transportation. Honolulu Clean Cities coalition Contact Information Robert Primiano 808-768-3500 rprimiano@honolulu.gov Margaret Larson 808-587-3813 margaret.s.larson@dbedt.hawaii.gov Coalition Website Clean Cities Coordinators Coord Robert Primiano Coord Coord Margaret Larson Coord Photo of Robert Primiano Robert Primiano has been the Clean Cities Coordinator for the Honolulu Clean Cities Coalition since 2001. Over the past eight years, Primiano has coordinated the coalition's participation in many educational and promotional events in Honolulu. He is an executive board member of the local APWA chapter and heads the fleet division for Honolulu's municipal

422

DOE Solar Decathlon: University of Colorado at Boulder: Living in a  

NLE Websites -- All DOE Office Websites (Extended Search)

Colorado's competition-winning house integrated into the Larson home in Golden, Colorado. Colorado's competition-winning house integrated into the Larson home in Golden, Colorado. Enlarge image BASE+ has been integrated into the home of Ronal and Gretchen Larson in Golden, Colorado. (Credit: Carol Anna/U.S. Department of Energy Solar Decathlon) Who: University of Colorado at Boulder What: BASE+ House Where: Private residence Golden, CO 80401 Map This House Public tours: Call the Colorado Renewable Energy Society hotline at 303-806-5317 for information about the annual Denver-Area Solar and Green Homes Tour. Solar Decathlon 2002 University of Colorado at Boulder: Living in a Panorama The University of Colorado won the first U.S. Department of Energy Solar Decathlon with its BASE+ (Building a Sustainable Environment) house. Originally designed as an adaptable construction model, the house was later

423

U.S. Department of Justice Office of Justice Programs  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Marci Larson Marci Larson Branch Chief Office for Domestic Preparedness TRANSPORTATION EXTERNAL COORDINATION WORKING GROUP APRIL 21-23, 2004 ALBUQUERQUE, NEW MEXICO ODP Background 30 April 1998 - ODP established to improve state and local WMD incident response capabilities nationwide Equipment grants Coordinated training programs Exercise support Technical assistance 1 March 2003 - Transitioned to Department of Homeland Security 2 Secretary --------------------------- Deputy Secretary Under Secretary Science and Technology Under Secretary Information Analysis and Infrastructure Protection Under Secretary Border & Transportation Security Under Secretary Emergency Preparedness and Response Under Secretary Management Citizenship & Immigration Service Ombudsman (1)

424

No Slide Title  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Infrastructure Acquisition Infrastructure Acquisition Presented to: Transportation External Coordination Transportation External Coordination Working Group Meeting Working Group Meeting Presented by: Presented by: Ned Larson Ned Larson Office of National Transportation April 22, 2004 April 22, 2004 Albuquerque, NM Albuquerque, NM 2 Key Programmatic Interfaces * Disposal allocations * Waste Specifications * Waste Acceptance * Roles and Responsibilities Waste Acceptance Standard Contract Waste Generators (Utilities/DOE) * Facility interfaces * Site limitations * Service needs * Mode preference * Waste data * Schedules Repository Cask Receiving Fuel and Canister Handling * Cask System Envelopes * Handling interfaces * Operating requirements * Vehicle interfaces * Fleet Management Facility (FMF) Interfacing * Operating requirements

425

University of Southern California Solar Decathlon 2011 Project Manual  

NLE Websites -- All DOE Office Websites (Extended Search)

l u x H o m e l u x H o m e TM Team USC Construction Documents Project Manual U.S. DEPARTMENT OF ENERGY SOLAR DECATHLON 2013 teaM uSc Project Manual Faculty Contact: Gary Paige School of Architecture Los Angeles, CA 90007 paigegary@gmail.com (310) 488 - 4516 Student Contact: Evyn Larson School of Architecture Los Angeles, CA 90007 evyn.larson@gmail.com (408) 802 - 3695 As-Built Construction Documents August 22, 2013 7 C D E

426

E-Print Network 3.0 - alto quixaba pegmatite Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

suite consisting primarily of K... , garnet, and less K-feldspar. Notably, zircon and titanite are absent from pegmatites. The TTG batholiths Source: Collection: Geosciences 19...

427

E-Print Network 3.0 - apatite structured minerals Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

calcic garnet and clinopyroxene, REE primarily occupy the structural position... and titanite i.e. minerals that preferentially incorporate ... Source: Arrhenius, Gustaf -...

428

Regenerable sorbents for CO.sub.2 capture from moderate and high temperature gas streams  

DOE Patents (OSTI)

A process for making a granular sorbent to capture carbon dioxide from gas streams comprising homogeneously mixing an alkali metal oxide, alkali metal hydroxide, alkaline earth metal oxide, alkaline earth metal hydroxide, alkali titanate, alkali zirconate, alkali silicate and combinations thereof with a binder selected from the group consisting of sodium ortho silicate, calcium sulfate dihydrate (CaSO.sub.4.2H.sub.2O), alkali silicates, calcium aluminate, bentonite, inorganic clays and organic clays and combinations thereof and water; drying the mixture and placing the sorbent in a container permeable to a gas stream.

Siriwardane, Ranjani V. (Morgantown, WV)

2008-01-01T23:59:59.000Z

429

Brazil Week "Vanderbilt"and the Vanderbilt logo are registered trademarks and service marks of  

E-Print Network (OSTI)

Brazil Week "Vanderbilt"and the Vanderbilt logo are registered trademarks and service marks of Citizenship in Late-Nineteenth-Century Brazil" 4:00 p.m. Buttrick Hall 123 Futebol Tournament All are invited.d.larson@vanderbilt.edu. 5:30 p.m. Alumni Lawn Wednesday SEPT World on Wednesday "Vanderbilt and Brazil: Past Present

Bordenstein, Seth

430

Gas stripping and mixing in galaxy clusters: a numerical comparison study  

Science Journals Connector (OSTI)

......Gunn J. E. , Gott J. R. III, 1972, ApJ, 176...AA, 499, 87. Kennicutt R. C. Jr , 1998, ApJ, 498, 541...AA, 481, 337. Larson R. B. , 1978, J. Comput...2008, MNRAS, 383, 593. McNally C. P. , Maron J. L......

Steffen He; Volker Springel

431

Diffusion Maps for Changing Data Diffusion Maps for Changing Data  

E-Print Network (OSTI)

Diffusion Maps for Changing Data Diffusion Maps for Changing Data Matthew J. Hirn Department in Honor of the 70th Birthday of David R. Larson #12;Diffusion Maps for Changing Data Collaborators Joint work with Ronald Coifman and Roy Lederman. #12;Diffusion Maps for Changing Data High Dimensional Data

Hirn, Matthew

432

Carbon Mitigation by Biofuels or by Saving and Restoring Forests?  

Science Journals Connector (OSTI)

...indicate the ranges of values in the literature cited. Details are in the SOM. PHOTO...eu/wtw.html. 2 Larson E. , A review of LCA studies on liquid biofuels for the...4 Kirschbaum M.U.F. , Biomass Bioenergy 24 , 297 ( 2003 ). 5 International Energy...

Renton Righelato; Dominick V. Spracklen

2007-08-17T23:59:59.000Z

433

Carbon Mitigation by Biofuels or by Saving and Restoring Forests?  

Science Journals Connector (OSTI)

...School of Earth and Environment, University of...of values in the literature cited. Details...strains on the environment. For the longer...Larson E. , A review of LCA studies on...Panel of the Global Environment Facility (STAP...F. , Biomass Bioenergy 24 , 297 ( 2003...

Renton Righelato; Dominick V. Spracklen

2007-08-17T23:59:59.000Z

434

Magnetospheric Constellation and Tomography Mission Concept R. E. Ergun1*  

E-Print Network (OSTI)

Magnetospheric Constellation and Tomography Mission Concept R. E. Ergun1* , D. E. Larson1 , T. Phan]. The interaction between the solar wind and mag- netosphere results with energy and mass transfer across magnetic and stored in the magnetotail. A plasma sheet appears between the two lobes of the magnetotail where energy

California at Berkeley, University of

435

Gordon Research Conferences  

Science Journals Connector (OSTI)

...Environmental source of toxic metals"; Kathryn R. Ma-haffey...particle erosive wear of metals and ceramics"; F...Ayers, "Hardening of metal surfaces for wear applications...chemistry within the fluid phase of coal carboniza-tion...liquids and related model compounds"; Olaf A. Larson...

Alexander M. Cruickshank

1980-03-14T23:59:59.000Z

436

Dimethyl ether (DME) from coal as a household cooking fuel in China  

E-Print Network (OSTI)

technologies. Given China's rich coal resources, the production and use of coal-derived DME as a cooking fuelDimethyl ether (DME) from coal as a household cooking fuel in China Eric D. Larson Princeton gas (LPG) as a household cooking fuel. As such, DME is an attractive fuel for clean cooking. DME can

437

Evaluation of the Anti-HER2 C6.5 Diabody as a PET Radiotracer to Monitor HER2 status and Predict Response to Trastuzumab Treatment  

Science Journals Connector (OSTI)

...mice using [(99m)Tc]-HYNIC-trastuzumab...Pisacane PI, van Dijk SM, Eigenbrot C, Sliwkowski...Afroze F, Rosen N Larson SM.Early tumor response...Immunoglobulin Fragments 0 Radiopharmaceuticals 0 Single-Chain Antibodies...Positron-Emission Tomography methods Radiopharmaceuticals pharmacology Receptor...

Smitha Reddy; Calvin C. Shaller; Mohan Doss; Irina Shchaveleva; James D. Marks; Jian Q. Yu; and Matthew K. Robinson

2011-03-15T23:59:59.000Z

438

2-(3-{1-Carboxy-5-[(6-[18F]Fluoro-Pyridine-3-Carbonyl)-Amino]-Pentyl}-Ureido)-Pentanedioic Acid, [18F]DCFPyL, a PSMA-Based PET Imaging Agent for Prostate Cancer  

Science Journals Connector (OSTI)

...antigen targeted (99m)Tc-radioimaging agents.Mol...Smith-Jones PM, Larson SM Lewis JS.89Zr-DFO-J591...Fluorine Radioisotopes 0 Radiopharmaceuticals 56-87-1 Lysine 57-13-6...imaging Radiometry methods Radiopharmaceuticals chemical synthesis diagnostic...

Ying Chen; Mrudula Pullambhatla; Catherine A. Foss; Youngjoo Byun; Sridhar Nimmagadda; Srinivasan Senthamizhchelvan; George Sgouros; Ronnie C. Mease; and Martin G. Pomper

2011-12-15T23:59:59.000Z

439

Nuclear PowerSuccess Assured  

Science Journals Connector (OSTI)

Nuclear PowerSuccess Assured ... Confidence in nuclear power's future mounts technology shaves costs, improves efficiency ... This informed opinion as to the economic practicality of commercial nuclear power was expressed to C&EN by National Carbon's Clarence E. Larson, a pioneer in the atomic energy field. ...

1955-12-26T23:59:59.000Z

440

RESOLVING BEAM TRANSPORT PROBLEMS IN ELECTROSTATIC ACCELERATORS  

E-Print Network (OSTI)

RESOLVING BEAM TRANSPORT PROBLEMS IN ELECTROSTATIC ACCELERATORS J. D. LARSON (*) Oak Ridge National are frequently encounte- red during the design, operation and upgrading of electrostatic accelerators. Examples are provided of analytic procedures that clarify accelerator ion optics and lead to more effective beam

Boyer, Edmond

Note: This page contains sample records for the topic "larson garnet alkali" 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

3944 VOLUME 14J O U R N A L O F C L I M A T E 2001 American Meteorological Society  

E-Print Network (OSTI)

on the amount and vertical distribution of water vapor above the cold-pool boundary layer (CPBL). In response; Sun and Liu 1996; Miller 1997; Larson et al. 1999, hereinafter LHK; Sherwood 1999; Clement and Seager cloud-radiative effects and specified the potential temperature difference between the upper * Current

Randall, David A.

442

Untitled Document http://www.cfr.washington.edu/Outreach/Denman/nov9-2k.html 1 of 2 8/5/2008 2:02 PM  

E-Print Network (OSTI)

:02 PM Symposium on the Certification of State Lands This program was held on Thursday, November 9, 2000 for this symposium: Susan Bolton Linda Chalker-Scott Jerry Franklin Bruce Larson (chair) Bruce Lippke Robert Lee Bruce Bare) 12:50 PM Just what is forest certification and how has it been used? (Dean Kristiina Vogt

Borenstein, Elhanan

443

Center for Quantum Science and Engineering Weekly Seminar  

E-Print Network (OSTI)

SPEAKER Dr. Derek Larson Postdoctoral researcher, Department of Physics, NTU PLACE Rm716, CCMS & New Physics Building, NTU Abstract The study of structural glasses remains a difficult problem in condensed, I show how the phase structure depends on the effective system dimension. We use one

Wu, Yih-Min

444

BEHAVIORAL HEALTH RECENT ACHIEVEMENTS of Heller Faculty and Researchers Brandeis University  

E-Print Network (OSTI)

. (2013). http://iasp.brandeis.edu/pdfs/2013/ Fireman.pdf Thomas, H., Boguslaw, J., Mann, A., and Shapiro, A., and Shapiro, T. Employment Capital: How Work Builds and Protects Family Wealth and Security). Larson, M.J., Mohr, B.A., Lorenz, L.S., Grayton, C., and Williams, T.V. (2014). General and Specialist

Fraden, Seth

445

Soil Science Society of America Journal Soil Sci. Soc. Am. J.  

E-Print Network (OSTI)

. Larson Dep. of Aerospace Engineering Sciences Univ. of Colorado Boulder, CO 80309 Eni G. Njoku Jet security. Large-scale soil moisture monitoring has advanced in recent years, creating opportunitiesSoil Science Society of America Journal Soil Sci. Soc. Am. J. doi:10.2136/sssaj2013

Small, Eric

446

InsideIllinoisDec. 7, 2006 Vol. 26, No. 11  

E-Print Network (OSTI)

Illinois prod- ucts to the public, to promote the Allerton name and in- crease food service (at the re, food service administrator; and Eric Larson, pastry chef in the Housing Division, were among 20 Dog tile, an Allerton T-shirt and hat, and other items, and the Allerton Label Food Basket contains

Lewis, Jennifer

447

Towards new states of matter with atoms and photons  

E-Print Network (OSTI)

Towards new states of matter with atoms and photons Jonas Larson Stockholm University and Universität zu Köln Aarhus "Cold atoms and beyond" 26/6-2014 #12;Motivation Optical lattices + control QED = coupling between few material (atomic) and few electromagnetic degrees of freedom. Cavity atom

448

Physical properties of upper oceanic crust: Ocean Drilling Program Hole 801C and the waning of hydrothermal circulation  

E-Print Network (OSTI)

Marine Geology and Geophysics: Heat flow (benthic) and hydrothermal processes; 7220 Seismology: Oceanic of hydrothermal circulation Richard D. Jarrard,1 Lewis J. Abrams,2 Robert Pockalny,3 Roger L. Larson,3 and Tetsuro 2003. [1] The hydrologic evolution of oceanic crust, from vigorous hydrothermal circulation in young

Abrams, Lewis J.

449

P. Floren, A. Krger, and M. Spasojevic (Eds.): Pervasive 2010, LNCS 6030, pp. 265282, 2010. Springer-Verlag Berlin Heidelberg 2010  

E-Print Network (OSTI)

in the Home Gabe Cohn1 , Sidhant Gupta2 , Jon Froehlich2 , Eric Larson1 , and Shwetak N. Patel1,2 1 Electrical in infrastructure-mediated sensing. GasSense analyzes the acoustic response of a home's government mandated gas of a professional. We deployed our solution in nine different homes and initial results show that GasSense has

Anderson, Richard

450

ERDC/ELTR-12-25 Army Range Technology Program  

E-Print Network (OSTI)

ERDC/ELTR-12-25 Army Range Technology Program Large-Scale Physical Separation of Depleted Uranium-Scale Physical Separation of Depleted Uranium from Soil Steven Larson, Victor Medina, John Ballard, Chris Griggs) at Yuma Proving Ground (YPG) to evaluate this technique for removal of depleted uranium (DU) metal from

US Army Corps of Engineers

451

Common variants at ten loci influence QT interval duration in the QTGEN Study  

E-Print Network (OSTI)

Hofman4,16, Susan R Heckbert9,12,17, Christopher J O'Donnell3,18,19, Andre´ G Uitterlinden4,8,16, Bruce M Psaty9,10,12,17,20, Thomas Lumley5,23, Martin G Larson3,7,23 & Bruno H Ch Stricker4,8,15,16,21,23 QT

de Bakker, Paul

452

Biomass Plantation Inergy Systems and Sustainable DevelD~ment  

E-Print Network (OSTI)

.m Biomass Plantation Inergy Systems and Sustainable DevelD~ment ERIC D. LARSON AND ROBERT H poor manSOl ecause f'itSdirect useby combustion := :-Iuclear for domestic cooking and. Hydro hearing ranks ir ar the bor- rom of the ladderofPreferred Biomass DEV'ELOPING COUNTRIES energ

453

10January 1998 Small-Scale Gasification-Based Biomass Power Generation  

E-Print Network (OSTI)

, gasified biomass canbe usedto power internal combustion engines(ICEs), gasturbines, and fuel cells, all. Historical Perspective on Biomass-Gasifier/Internal Combustion Engine (BiG/ICE) Systems Gasified wood10January 1998 I Small-Scale Gasification-Based Biomass Power Generation Eric D. Larson Centerfor

454

This article has been accepted for inclusion in a future issue of this journal. Content is final as presented, with the exception of pagination. IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING 1  

E-Print Network (OSTI)

of Colorado, Boulder, CO 80309 USA (e-mail: kristinem.larson@gmail.com). J. J. Braun is with COSMIC, University Corporation for Atmospheric Re- search, Boulder, CO 80301 USA (e-mail: braunj@ucar.edu). E. E. Small is with the Department of Geological Sciences, University of Colorado, Boulder, CO 80309 USA (e

Larson, Kristine

455

Eclogitic micaschists in the central part of the Krun hory Mountains (Bohemian Massif)  

Science Journals Connector (OSTI)

...garnet-chlorite-chloritoid crosses the univariant curve of the reaction Fchl = FcldAlm. In addition, the isopleths for Xceladonite Xcel -italic numbers) in muscovites were calculated in the system KFMASH for the assemblage muscovite-garnet-kyanite and observed...

Ji? KONOPSEK

456

EVALUATION OF LITHIUM BASED DEICING CHEMICALS FOR MITIGATING ASR IN CONCRETE PAVEMENT.  

E-Print Network (OSTI)

??Deicing and anti-icing chemicals such as alkali-acetate and alkali-formate based formulations are increasingly being used on airfield pavements. Among these new deicers, potassium acetate-based formulations (more)

Soundarapandian, Senthil

2007-01-01T23:59:59.000Z

457

Synchrotron Vacuum-Ultraviolet Postionization Mass Spectrometry with Laser and Ion Probes for Intact Molecular Spatial Mapping of Lignin  

E-Print Network (OSTI)

Alcohol and Alkali and Organosolv Lignins with SynchrotronAlcohol and Alkali and Organosolv Lignins with Synchrotronof ~6.6 MW/cm 2 , (b) organosolv lignin (Sigma Aldrich)

Takahashi, Lynelle Kazue

2011-01-01T23:59:59.000Z

458

Determination of Mercury in Coal by Isotope Dilution Cold-Vapor Generation Inductively  

E-Print Network (OSTI)

, such as paper mills, solid waste incineration, mining, and chlor-alkali production, the burning of fossil fuels

459

Project Summary Report 0-1857-S 1 The University of Texas at Austin  

E-Print Network (OSTI)

mechanisms: Alkali-Silica Reaction (ASR) and Delayed Ettringite Formation (DEF). Other TxDOT studies have

Texas at Austin, University of

460

Synthesis and characterization of alkali-metal titanium alkoxide compounds MTi(O-i-Pr) sub 5 (M = Li, Na, K): Single-crystal x-ray diffraction structure of (LiTi(O-i-Pr) sub 5 ) sub 2  

SciTech Connect

The series (MTi(O-iPr){sub 5}), M = Li, Na, or K, has been prepared by the reaction of MO-i-Pr with Ti(O-i-Pr){sub 4}. A single-crystal x-ray diffraction study revealed that (LiTi(O-i-Pr){sub 5}) crystallizes from toluene at {minus}30{degree}C in the monoclinic space group P2{sub 1}/n, with unit cell dimensions a = 11.440 (8) {angstrom}, b = 16.396 (13) {angstrom}, c = 11.838 (8) {angstrom}, {beta} = 92.59 (5){degree}, and Z = 4, as a dimer containing two approximately trigonal-bipyramidal titanium centers linked by lithium bridges. In benzene solution, all three compounds are dimeric, as revealed by cryoscopic molecular weight determination, and all three undergo an alkoxide ligand exchange process that is rapid on the {sup 1}H NMR time scale at room temperature. The positions of {nu}(M-O) are assigned based on the low-energy shifts observed upon deuteriation of the isopropoxide ligands. 23 refs., 3 figs., 3 tabs.

Hampden-Smith, M.J.; Williams, D.S. (Univ. of New Mexico, Albuquerque (USA)); Rheingold, A.L. (Univ. of Delaware, Newark (USA))

1990-10-03T23:59:59.000Z

Note: This page contains sample records for the topic "larson garnet alkali" 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
462

Fischer?Tropsch Synthesis: An In-Situ TPR-EXAFS/XANES Investigation of the Influence of Group I Alkali Promoters on the Local Atomic and Electronic Structure of Carburized Iron/Silica Catalysts  

Science Journals Connector (OSTI)

After 10 h of treatment the samples containing K, Rb, and Cs were completely carburized, and residual quantities of iron oxides were detected in both unpromoted and Li-promoted samples. ... To further constrain the model, global parameters (i.e., over all samples) were used for the isotropic lattice expansion (?) and Debye?Waller factor (?2) parameters for carbide (i.e., combined epsilon and Hgg) and oxide (i.e., Fe3O4) fractions. ... Au particles smaller than about 30 were also reactive to air, leading to oxidn. of up to 15% of the atoms of the gold particles, depending on the size; larger particles were not oxidized. ...

Mauro C. Ribeiro; Gary Jacobs; Burtron H. Davis; Donald C. Cronauer; A. Jeremy Kropf; Christopher L. Marshall

2010-04-01T23:59:59.000Z

463

Extraction process for removing metallic impurities from alkalide metals  

DOE Patents (OSTI)

A development is described for removing metallic impurities from alkali metals by employing an extraction process wherein the metallic impurities are extracted from a molten alkali metal into molten lithium metal due to the immiscibility of the alkali metals in lithium and the miscibility of the metallic contaminants or impurities in the lithium. The purified alkali metal may be readily separated from the contaminant-containing lithium metal by simple decanting due to the differences in densities and melting temperatures of the alkali metals as compared to lithium.

Royer, L.T.

1987-03-20T23:59:59.000Z

464

Carbonation of metal silicates for long-term CO2 sequestration  

DOE Patents (OSTI)

In a preferred embodiment, the invention relates to a process of sequestering carbon dioxide. The process comprises the steps of: (a) reacting a metal silicate with a caustic alkali-metal hydroxide to produce a hydroxide of the metal formerly contained in the silicate; (b) reacting carbon dioxide with at least one of a caustic alkali-metal hydroxide and an alkali-metal silicate to produce at least one of an alkali-metal carbonate and an alkali-metal bicarbonate; and (c) reacting the metal hydroxide product of step (a) with at least one of the alkali-metal carbonate and the alkali-metal bicarbonate produced in step (b) to produce a carbonate of the metal formerly contained in the metal silicate of step (a).

Blencoe, James G; Palmer, Donald A; Anovitz, Lawrence M; Beard, James S

2014-03-18T23:59:59.000Z

465

TEC Meeting Summaries - April 2004 Presentations | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

April 2004 Presentations April 2004 Presentations TEC Meeting Summaries - April 2004 Presentations Albuquerque, New Mexico Presentations ( April 21-23, 2004) Documents Available for Download Introductions and Meeting Welcome - TEC 101 Judith Holm Program Updates from OCRWM and EM - OCRWM Gary Lanthrum Federal Agency Panel - NRC_Snyder Federal Agency Panel - DOT_Blackwell Federal Agency Panel - DOH_Larson Regional Group Updates on Transportation Activities - CSG-NE_Paull-Wilds Regional Group Updates on Transportation Activities - CSG-MW_Sattler Regional Group Updates on Transportation Activities - SSEB_Wells Regional Group Updates on Transportation Activities - WIEB_Larson Regional Group Updates on Transportation Activities - WGA_Mackie Communications/Lessons Learned Study of DOE FY03 SNF Shipments -

466

DOE Hydrogen Analysis Repository: Gasification-Based Fuels and Electricity  

NLE Websites -- All DOE Office Websites (Extended Search)

Gasification-Based Fuels and Electricity Production from Biomass Gasification-Based Fuels and Electricity Production from Biomass Project Summary Full Title: Gasification-Based Fuels and Electricity Production from Biomass, without and with Carbon Capture and Storage Project ID: 226 Principal Investigator: Eric D. Larson Keywords: Biomass; Fischer Tropsch; hydrogen Purpose Develop and analyze process designs for gasification-based thermochemical conversion of switchgrass into Fischer-Tropsch (F-T) fuels, dimethyl ether (DME), and hydrogen. All process designs will have some level of co-production of electricity, and some will include capture of byproduct CO2 for underground storage. Performer Principal Investigator: Eric D. Larson Organization: Princeton University Telephone: 609-258-4966 Email: elarson@princeton.edu

467

Page not found | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

81 - 26490 of 26,764 results. 81 - 26490 of 26,764 results. Download Policy Flash 2013-57 New Strategic Sourcing Acquisition Guide Chapter 7.2 Questions concerning this policy flash should be directed to Mike Larson of the Office of Acquisition and Project Management, Strategic Programs Division at (202) 287-1426 or at Michael.Larson@hq... http://energy.gov/management/downloads/policy-flash-2013-57-new-strategic-sourcing-acquisition-guide-chapter-72 Download 2Q CY2005 (PDF), Facility Representative Program Performance Indicators Quarterly Report Attached is the Facility Representative (FR) Program Performance Indicators Quarterly Report covering the period from April to June 2005. Data for these indicators are gathered by Field elements... http://energy.gov/hss/downloads/2q-cy2005-pdf-facility-representative-program-performance-indicators

468

The House of the Future at MIT  

NLE Websites -- All DOE Office Websites (Extended Search)

The House of the Future at MIT The House of the Future at MIT Speaker(s): Kent Larson Date: December 6, 2002 - 12:00pm Location: Bldg. 90 During this seminar, Professor Larson will discuss two related housing initiatives at MIT: Changing Places/Houses in The MIT Home of the Future Consortium. Change is accelerating, but the places we create are largely static and unresponsive. "Changing Places" is an MIT research consortium that explores how new technologies, materials, and strategies for design can make possible dynamic, evolving places that respond to the complexities of life. Open Source Building Alliance Providing individuals with choice creates competition and incentives for innovation. Mass-customization requires a modular component-based approach, which creates a pathway for new players to enter the $852

469

Geothermal Reservoir Assessment Case Study, Northern Basin and Range  

Open Energy Info (EERE)

Reservoir Assessment Case Study, Northern Basin and Range Reservoir Assessment Case Study, Northern Basin and Range Province, Northern Dixie Valley, Nevada Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: Geothermal Reservoir Assessment Case Study, Northern Basin and Range Province, Northern Dixie Valley, Nevada Abstract N/A Authors Elaine J. Bell, Lawrence T. Larson and Russell W. Juncal Published U.S. Department of Energy, 1980 Report Number GLO2386 DOI Not Provided Check for DOI availability: http://crossref.org Online Internet link for Geothermal Reservoir Assessment Case Study, Northern Basin and Range Province, Northern Dixie Valley, Nevada Citation Elaine J. Bell,Lawrence T. Larson,Russell W. Juncal. 1980. Geothermal Reservoir Assessment Case Study, Northern Basin and Range Province,

470

Effect of Rb and Ta Doping on the Ionic Conductivity and Stability of the Garnet Li7+2x-y(La3-xRbx)(Zr2-yTay)O12 (0 x 0.375, 0 y 1)  

E-Print Network (OSTI)

compatibility with electrodes, a wide electrochemical operating voltage window, environmentally benign, and does partially satisfy this list of demands. For example, LiPON has a very wide stability window at room temperature) requiring expensive thin film vapor deposition techniques.3 On the other hand, Li10Ge

Ceder, Gerbrand

471

Nuclear Instruments and Methods in Physics Research A 428 (1999) 593}607 Radio-controlled xenon #ashers for atmospheric monitoring  

E-Print Network (OSTI)

. Denholm , J. Gloyn , D. He , Y. Ho , M.A. Huang , C.C.H. Jui , M.J. Kidd , D.B. Kieda , B. Knapp , S. Ko #ashers for atmospheric monitoring at the HiRes cosmic ray observatory L.R. Wiencke *, T. Abu-Zayyad , M , K. Larson , E.C. Loh , E.J. Mannel , J.N. Matthews , J.R. Meyer , A. Salman , K.M. Simpson , J

472

Hierarchy of Simulation Models in Predicting Structure and Energetics of the Src SH2 Domain Binding to Tyrosyl Phosphopeptides  

Science Journals Connector (OSTI)

Gennady M. Verkhivker ,* Djamal Bouzida , Daniel K. Gehlhaar , Paul A. Rejto , Lana Schaffer , Sandra Arthurs , Anthony B. Colson , Stephan T. Freer , Veda Larson , Brock A. Luty , Tami Marrone , and Peter W. Rose ... (33)?Shakespeare, W. C.; Bohacek, R. S.; Azimioara, M. D.; Macek, K. J.; Luke, G. P.; Dalgarno, D. C.; Hatada, M. H.; Lu, X.; Violette, S. M.; Bartlett, C.; Sawyer, T. K. Structure-based Design of Novel Bicyclic Nonpeptide Inhibitors for the Src SH2 Domain. ...

Gennady M. Verkhivker; Djamal Bouzida; Daniel K. Gehlhaar; Paul A. Rejto; Lana Schaffer; Sandra Arthurs; Anthony B. Colson; Stephan T. Freer; Veda Larson; Brock A. Luty; Tami Marrone; Peter W. Rose

2001-11-09T23:59:59.000Z

473

Investigation of factors influencing stalk strength in sorghum  

E-Print Network (OSTI)

with tall culms to maximize biomass (Creelman et al. , 1980), but research has shown that lodging is positively correlated with plant height in sorghum (Maranville, 1974; Esechie et al. , 1977). For this reason, the goal of some breeding programs has been..., and increases plant vulnerability to diseases and decay (Coleman, 1970). Several authors have discussed the negative effects of lodging (sta)k breakage) on grain quality. Larson and Maranville (1977) found that lodging reduced grain yields in sorghum...

Richie, William Eldridge

2012-06-07T23:59:59.000Z

474

Characteristics and Consequences of Extracurricular Activity Participation of Hispanic Middle School Students  

E-Print Network (OSTI)

). Extracurricular activities also afford adolescents the opportunity to develop social capital in the form of positive relationships with adult activity leaders (Denault & Poulin, 2008) and they provide a safe setting for students to acquire and practice newly... learned skills, some of which may generalize in positive ways to other areas of their lives (Feldman & Matjasko, 2005; Denault & Poulin, 2008; Larson 2000; Peck, Roeser, Zarrett, & Eccles, 2008). Regarding school-based outcomes, multiple studies...

Villarreal, Victor

2012-10-19T23:59:59.000Z

475

Swine Pneumonia  

E-Print Network (OSTI)

Selected Articles in Proceedings of the American Association of Swine Practitioners, 1995-1998. Straw, B. E. and Clark, L. K., ?Mycoplasmal Pneumonia of Swine,? PIH - 29, Pork Industry Handbook, Purdue Uni- versity, West Lafayette, Indiana, 1992. Larson, J.... L., Anderson, G., McKean J., et al, ?Porcine Pleuropneumoniae,? PIH - 82, Pork Industry Handbook, Purdue University, West Lafayette, Indiana, 1994. Cole, J. R., Nietfeld, J. C., and Schwartz, K. J., ?Salmonella choleraesuis in Pigs,? PIH - 131, Pork...

Lawhorn, D. Bruce

1998-06-18T23:59:59.000Z

476

E-Print Network 3.0 - anisotropic magnetic properties Sample...  

NLE Websites -- All DOE Office Websites (Extended Search)

anisotropic garnets lo. But the (YTb)IG properties at H > 20 T are typ- ical of the Ising magnets... behaviour is typical for the strongly anisotropic (Ising) magnets 7....

477

Modal space; applications to ultramafic and mafic rocks  

Science Journals Connector (OSTI)

...showvariationsin tk sufficient to allow spinel to encompassolivine compositions,and garnet(majorite)to encompasspyroxenecomposi-iions. Other R2O3 phases, having either the corundum-ilmenite or perovskitestructures,also may appear,andour modal spacesmay...

James B. Thompson

478

The mild hydrothermal synthesis of hydrogrossular from coal ash  

Science Journals Connector (OSTI)

In this study, an attempt was made to synthesize hydrogrossular, a group of garnet minerals, under hydrothermal conditions at temperatures below 180C, using coal ash, which is the solid waste from thermal...

Satoru Fujita; Kenzi Suzuki; Yasuo Shibasaki

2002-04-01T23:59:59.000Z

479

Basalt petrogenesis beneath slow- and ultraslow-spreading Arctic mid-ocean ridges  

E-Print Network (OSTI)

To explore the ability of melting mafic lithologies to produce alkaline ocean-island basalts (OIB), an experimental study was carried out measuring clinopyroxene (Cpx)melt and garnet (Gt)-melt partition coefficients during ...

Elkins, Lynne J

2009-01-01T23:59:59.000Z

480

FY2000 SSRLUO Executive Committee  

NLE Websites -- All DOE Office Websites (Extended Search)

Paul Alivisatos University of California at Berkeley Department of Chemistry Berkeley, CA 94720 Phone: 510-643-7371 Fax: 510-642-6911 E-mail: alivis@garnet.berkeley.edu Cathy...

Note: This page contains sample records for the topic "larson garnet alkali" 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

Do Watershed Partnerships Enhance Beliefs Conducive to Collective Action? By Mark Lubell  

E-Print Network (OSTI)

Chapter 9 Do Watershed Partnerships Enhance Beliefs Conducive to Collective Action? By Mark Lubell-645-0084, mlubell@garnet.acns.fsu.edu Part of: Paul Sabatier, Will Focht, Mark Lubell, Zev Trachterberg, Arnold

Lubell, Mark

482

Degradation of Dome Cutting Minerals in Hanford Waste - 13100  

SciTech Connect

At the Hanford Tank Farms, recent changes in retrieval technology require cutting new risers in several single-shell tanks. The Hanford Tank Farm Operator is using water jet technology with abrasive silicate minerals such as garnet or olivine to cut through the concrete and rebar dome. The abrasiveness of these minerals, which become part of the high-level waste stream, may enhance the erosion of waste processing equipment. However, garnet and olivine are not thermodynamically stable in Hanford waste, slowly degrading over time. How likely these materials are to dissolve completely in the waste before the waste is processed in the Waste Treatment and Immobilization Plant can be evaluated using theoretical analysis for olivine and collected direct experimental evidence for garnet. Based on an extensive literature study, a large number of primary silicates decompose into sodalite and cancrinite when exposed to Hanford waste. Given sufficient time, the sodalite also degrades into cancrinite. Even though cancrinite has not been directly added to any Hanford tanks during process times, it is the most common silicate observed in current Hanford waste. By analogy, olivine and garnet are expected to ultimately also decompose into cancrinite. Garnet used in a concrete cutting demonstration was immersed in a simulated supernate representing the estimated composition of the liquid retrieving waste from Hanford tank 241-C-107 at both ambient and elevated temperatures. This simulant was amended with extra NaOH to determine if adding caustic would help enhance the degradation rate of garnet. The results showed that the garnet degradation rate was highest at the highest NaOH concentration and temperature. At the end of 12 weeks, however, the garnet grains were mostly intact, even when immersed in 2 molar NaOH at 80 deg. C. Cancrinite was identified as the degradation product on the surface of the garnet grains. In the case of olivine, the rate of degradation in the high-pH regimes of a waste tank is expected to depend on two main parameters: carbonate is expected to slow olivine degradation rates, whereas hydroxide is expected to enhance olivine dissolution rates. Which of these two competing dissolution drivers will have a larger impact on the dissolution rate in the specific environment of a waste tank is currently not identifiable. In general, cancrinite is much smaller and less hard than either olivine or garnet, so would be expected to be less erosive to processing equipment. Complete degradation of either garnet or olivine prior to being processed at the Waste Treatment and Immobilization Plant cannot be confirmed, however. (authors)

Reynolds, Jacob G.; Cooke, Gary A.; Huber, Heinz J. [Washington River Protection Solutions, LLC, P.O. Box 850, Richland, WA 99352 (United States)] [Washington River Protection Solutions, LLC, P.O. Box 850, Richland, WA 99352 (United States)

2013-07-01T23:59:59.000Z

483

Degradation of dome cutting minerals in Hanford waste  

SciTech Connect

At the Hanford Tank Farms, recent changes in retrieval technology require cutting new risers in several single-shell tanks. The Hanford Tank Farm Operator is using water jet technology with abrasive silicate minerals such as garnet or olivine to cut through the concrete and rebar dome. The abrasiveness of these minerals, which become part of the high-level waste stream, may enhance the erosion of waste processing equipment. However, garnet and olivine are not thermodynamically stable in Hanford waste, slowly degrading over time. How likely these materials are to dissolve completely in the waste before the waste is processed in the Waste Treatment and Immobilization Plant can be evaluated using theoretical analysis for olivine and collected direct experimental evidence for garnet. Based on an extensive literature study, a large number of primary silicates decompose into sodalite and cancrinite when exposed to Hanford waste. Given sufficient time, the sodalite also degrades into cancrinite. Even though cancrinite has not been directly added to any Hanford tanks during process times, it is the most common silicate observed in current Hanford waste. By analogy, olivine and garnet are expected to ultimately also decompose into cancrinite. Garnet used in a concrete cutting demonstration was immersed in a simulated supernate representing the estimated composition of the liquid retrieving waste from Hanford tank 241-C-107 at both ambient and elevated temperatures. This simulant was amended with extra NaOH to determine if adding caustic would help enhance the degradation rate of garnet. The results showed that the garnet degradation rate was highest at the highest NaOH concentration and temperature. At the end of 12 weeks, however, the garnet grains were mostly intact, even when immersed in 2 molar NaOH at 80 deg C. Cancrinite was identified as the degradation product on the surface of the garnet grains. In the case of olivine, the rate of degradation in the high-pH regimes of a waste tank is expected to depend on two main parameters: carbonate is expected to slow olivine degradation rates, whereas hydroxide is expected to enhance olivine dissolution rates. Which of these two competing dissolution drivers will have a larger impact on the dissolution rate in the specific environment of a waste tank is currently not identifiable. In general, cancrinite is much smaller and less hard than either olivine or garnet, so would be expected to be less erosive to processing equipment. Complete degradation of either garnet or olivine prior to being processed at the Waste Treatment and Immobilization Plant cannot be confirmed, however.

Reynolds, Jacob G.; Huber, Heinz J.; Cooke, Gary A.

2013-01-11T23:59:59.000Z

484

An insoluble residue study of the Comanche Peak and Edwards limestones in central Kimble and eastern Sutton counties, Texas  

E-Print Network (OSTI)

and leucoxsns ars the most ooxxmon Crso? minerals yxesent. Other trace minerals include garnets glauconite? staux'elite, rutile, spinel ~ biotit?s pyrite~ spidote and anthophylkita Uoloanie glass is classed with ths txsos minerals, Constituents... and leucoxsns ars the most ooxxmon Crso? minerals yxesent. Other trace minerals include garnets glauconite? staux'elite, rutile, spinel ~ biotit?s pyrite~ spidote and anthophylkita Uoloanie glass is classed with ths txsos minerals, Constituents...

Graczyk, Edward John

2012-06-07T23:59:59.000Z

485

Post-oxide phases of olivine and pyroxene and mineralogy of the mantle  

Science Journals Connector (OSTI)

... mixture of garnet (with a lattice parameter a0 - 11.5020.013 A), spinel (with aQ = 8.1130.017 A), stishovite, and the orthorhombic perovskite ... those of pyrope-almandite solid solutions found in nature) has disproportionated into a mixture of spinel plus stishovite; a slight amount of A12O3 may be retained in the garnet or ...

LIN-GUN LIU

1975-12-11T23:59:59.000Z

486

A gravity study of the Great Basin-Sonoran Desert transition zone, Basin and Range province, western United States  

E-Print Network (OSTI)

composition change. For a first approximation, assume that the upper mantle is a mix of olivine and pyroxene. Ignoring minor amounts of plagioclase, spinel, and garnet, the mean composition would be approximately 65% olivine and 35% pyroxene (Carter, 1966... composition change. For a first approximation, assume that the upper mantle is a mix of olivine and pyroxene. Ignoring minor amounts of plagioclase, spinel, and garnet, the mean composition would be approximately 65% olivine and 35% pyroxene (Carter, 1966...

Brooks, Debra Ann

2012-06-07T23:59:59.000Z

487

High thermal energy storage density molten salts for parabolic trough solar power generation.  

E-Print Network (OSTI)

??New alkali nitrate-nitrite systems were developed by using thermodynamic modeling and the eutectic points were predicted based on the change of Gibbs energy of fusion. (more)

Wang, Tao

2011-01-01T23:59:59.000Z

488

Double perovskite catalysts for oxidative coupling  

DOE Patents (OSTI)

Alkali metal doped double perovskites containing manganese and at least one of cobalt, iron and nickel are useful in the oxidative coupling of alkane to higher hydrocarbons.

Campbell, K.D.

1991-01-01T23:59:59.000Z

489

Solid-state NMR characterisation of transition-metal bearing nuclear waste glasses.  

E-Print Network (OSTI)

??Alkali borosilicate glass is used to immobilise high-level radioactive waste generated from the reprocessing of spent nuclear fuel. However, poorly soluble waste products such as (more)

Greer, Brandon

2012-01-01T23:59:59.000Z

490

Synchrotron Vacuum-Ultraviolet Postionization Mass Spectrometry with Laser and Ion Probes for Intact Molecular Spatial Mapping of Lignin  

E-Print Network (OSTI)

and Biosynthesis of Lignin; Springer-Verlag: Berlin, 1968. (chemical imaging studies of lignin and related compounds.and Alkali and Organosolv Lignins with Synchrotron Vacuum-UV

Takahashi, Lynelle Kazue

2011-01-01T23:59:59.000Z

491

Development of CaZn based glassy alloys as potential biodegradable bone graft substitute  

E-Print Network (OSTI)

­15] such as Ca­P coating, [12] micro-arc oxidation,[13] alkali-heat treatment [14] and biodegradable polymer

Zheng, Yufeng

492

BPA-2011-00661-FOIA Request  

NLE Websites -- All DOE Office Websites (Extended Search)

Inc. (formerly known as Atofina Chemicals, Inc.). The Bonneville Power Administration ("BPA") historically operated an electrical substation at Arkema's former chlor-alkali...

493

E-Print Network 3.0 - atom-surface scattering surface Sample...  

NLE Websites -- All DOE Office Websites (Extended Search)

surface structure of liquid alkali metals H. Tostmann Summary: T is increased or the surface tension is re- duced. For off-specular diffuse scattering, the incoming angle......

494

A SOLID CATALYST METHOD FOR BIODIESEL PRODUCTION.  

E-Print Network (OSTI)

??Biodiesel has considerable production potential as a renewable source of energy. The conventional processes use soluble alkali catalysts that contaminate the biodiesel and glycerol products, (more)

Kannan, Dheeban Chakrvarthi

2009-01-01T23:59:59.000Z

495

Liquid phase thermal swing chemical air separation  

DOE Patents (OSTI)

A temperature swing absorption separation of oxygen from air is performed with an oxygen acceptor of alkali metal nitrate and nitrite. 2 figs.

Erickson, D.C.

1988-05-24T23:59:59.000Z

496

Liquid phase thermal swing chemical air separation  

DOE Patents (OSTI)

A temperature swing absorption separation of oxygen from air is performed with an oxygen acceptor of alkali metal nitrate and nitrite.

Erickson, Donald C. (Annapolis, MD)

1988-01-01T23:59:59.000Z

497

HIGH-TEMPEPATURE OXIDATION AND CORROSION OF MATERIALS PROGRAM  

E-Print Network (OSTI)

alkali-metal sulfate in coal-ash, or turbine-blade deposits.steam-raising tubes by the ash/coal/ calcium sulfate burden

Whittle, D.P.

2010-01-01T23:59:59.000Z

498

E-Print Network 3.0 - av antimon fraan Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

safe use of delicate alkali-antimon Source: Weizmann Institute of Science, Department of Particle Physics, Radiation Detection Physics Lab. Collection: Physics 64 Vol. 29 (1998)...

499

E-Print Network 3.0 - av arsenik antimon Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

safe use of delicate alkali-antimon Source: Weizmann Institute of Science, Department of Particle Physics, Radiation Detection Physics Lab. Collection: Physics 67 Vol. 29 (1998)...

500

Impact of Biodiesel-Based Na on the Selective Catalytic Reduction...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

in B100 * Potential NaK emissions control effects - Ash accumulation in DPF - Alkali absorption into monolith walls * possible weakening of monolith - Catalyst poisoning...